/* roulang page: index */
:root {
            --bg-page: #F4F2EC;
            --bg-surface: #FFFFFF;
            --bg-dark: #0C100B;
            --ink-strong: #17191A;
            --ink-soft: #5F645F;
            --ink-mute: #9A9E97;
            --primary: #C6F13E;
            --accent: #FF4B2E;
            --line: #E3DFD6;
            --line-dark: rgba(255, 255, 255, 0.14);
            --font-main: -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-mono: "SF Mono", "JetBrains Mono", Consolas, "Roboto Mono", monospace;
            --radius: 3px;
            --radius-lg: 6px;
            --shadow-soft: 0 12px 30px rgba(20, 18, 10, 0.08);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background: var(--bg-page);
            color: var(--ink-strong);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        h1,
        h2,
        h3,
        h4 {
            line-height: 1.18;
            letter-spacing: -0.02em;
            font-weight: 800;
            color: var(--ink-strong);
        }
        h3 {
            font-weight: 700;
        }
        p {
            margin-bottom: 0;
        }
        .container {
            max-width: 1240px;
            padding-left: 24px;
            padding-right: 24px;
        }
        .mono {
            font-family: var(--font-mono);
            letter-spacing: -0.02em;
        }
        .btn {
            border-radius: var(--radius);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border: 1px solid transparent;
            transition: all .2s ease;
            font-size: 15px;
        }
        .btn:focus-visible,
        .accordion-button:focus-visible,
        a:focus-visible {
            outline: 3px solid rgba(198, 241, 62, 0.8);
            outline-offset: 3px;
        }
        .btn-primary-custom {
            background: var(--primary);
            color: #0C100B;
            border-color: var(--primary);
        }
        .btn-primary-custom:hover {
            background: #D8F85D;
            border-color: #D8F85D;
            color: #0C100B;
            transform: translateY(-2px);
        }
        .btn-dark-custom {
            background: var(--bg-dark);
            color: var(--primary);
            border-color: var(--bg-dark);
        }
        .btn-dark-custom:hover {
            background: #1F281A;
            border-color: #1F281A;
            color: var(--primary);
        }
        .btn-outline-dark-custom {
            background: transparent;
            color: var(--ink-strong);
            border: 1px solid var(--ink-strong);
        }
        .btn-outline-dark-custom:hover {
            background: var(--ink-strong);
            color: #fff;
            border-color: var(--ink-strong);
        }
        .btn-outline-white {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.7);
        }
        .btn-outline-white:hover {
            background: #fff;
            color: #0C100B;
            border-color: #fff;
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(244, 242, 236, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(227, 223, 214, 0.7);
            transition: box-shadow .3s ease, background .3s ease;
        }
        .site-header.scrolled {
            background: rgba(244, 242, 236, 0.95);
            box-shadow: 0 6px 24px rgba(20, 18, 10, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }
        .site-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-line {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo-main {
            font-size: 24px;
            font-weight: 900;
            letter-spacing: -0.04em;
            color: var(--ink-strong);
            line-height: 1;
        }
        .logo-badge {
            font-size: 11px;
            font-weight: 600;
            background: var(--primary);
            color: #0C100B;
            border-radius: 99px;
            padding: 3px 8px;
        }
        .logo-sub {
            display: block;
            font-size: 12px;
            color: var(--ink-soft);
            margin-top: 3px;
            letter-spacing: 0.04em;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 30px;
        }
        .main-menu {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 28px;
            margin: 0;
            padding: 0;
        }
        .main-menu li a {
            position: relative;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 15px;
            font-weight: 500;
            color: var(--ink-soft);
            padding: 8px 0;
            transition: color .2s;
        }
        .main-menu li a:hover,
        .main-menu li a.active {
            color: var(--ink-strong);
            font-weight: 700;
        }
        .main-menu li a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width .25s ease;
        }
        .main-menu li a:hover::after,
        .main-menu li a.active::after {
            width: 100%;
        }
        .header-cta .btn {
            padding: 10px 22px;
            font-size: 14px;
        }
        .hamburger {
            display: none;
            width: 42px;
            height: 42px;
            background: transparent;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
        }
        .hamburger span {
            width: 18px;
            height: 2px;
            background: var(--ink-strong);
            display: block;
            transition: all .25s;
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            color: #fff;
            margin-top: 76px;
            min-height: calc(100vh - 76px);
            display: flex;
            align-items: center;
            background: linear-gradient(90deg, rgba(9, 12, 8, 0.24) 0%, rgba(9, 12, 8, 0.42) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            background-color: #141A11;
            padding: 84px 0 64px;
            overflow: hidden;
        }
        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 8px 14px;
            border-radius: 99px;
            font-size: 13px;
            font-weight: 500;
            color: #fff;
            letter-spacing: 0.04em;
            margin-bottom: 30px;
        }
        .hero-kicker .pulse-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
        }
        .hero-section h1 {
            color: #fff;
            font-size: clamp(42px, 5.4vw, 76px);
            font-weight: 900;
            line-height: 1.08;
            letter-spacing: -0.03em;
            max-width: 760px;
        }
        .hero-section h1 .hl {
            color: var(--primary);
        }
        .hero-desc {
            margin-top: 28px;
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.82);
            max-width: 580px;
        }
        .hero-actions {
            margin-top: 36px;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .hero-actions .btn {
            min-width: 170px;
            padding: 15px 30px;
            font-size: 16px;
        }
        .safe-tags {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            margin: 52px 0 0;
            padding: 26px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.18);
        }
        .safe-tags li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.78);
        }
        .safe-tags li i {
            color: var(--primary);
        }
        .hero-visual {
            position: relative;
        }
        .hero-figure {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.18);
            position: relative;
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.25);
        }
        .hero-figure img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }
        .hero-float-card {
            position: absolute;
            background: #fff;
            color: var(--ink-strong);
            border-radius: var(--radius);
            box-shadow: 0 14px 32px rgba(0, 0, 0, 0.18);
            padding: 14px 18px;
            min-width: 200px;
        }
        .hero-float-card .flabel {
            font-size: 12px;
            color: var(--ink-mute);
            display: block;
            letter-spacing: 0.06em;
        }
        .hero-float-card .fnum {
            font-family: var(--font-mono);
            font-size: 24px;
            font-weight: 700;
            color: var(--ink-strong);
            line-height: 1.2;
        }
        .hero-float-card .fnote {
            font-size: 12px;
            color: var(--ink-mute);
        }
        .float-version {
            top: 24px;
            right: -18px;
        }
        .float-sec {
            bottom: 24px;
            left: -20px;
            border-left: 3px solid var(--primary);
            min-width: 220px;
        }
        .float-sec .sec-line {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 600;
            margin-top: 4px;
        }
        .float-sec .sec-line i {
            color: #3BBE5A;
            font-size: 18px;
        }

        /* ===== Sections common ===== */
        .section-pad {
            padding: 100px 0;
        }
        .section-header-row {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            gap: 30px;
            margin-bottom: 44px;
        }
        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-mono);
            font-size: 13px;
            letter-spacing: 0.04em;
            color: var(--ink-mute);
            font-weight: 500;
            margin-bottom: 14px;
        }
        .section-eyebrow::before {
            content: "";
            width: 16px;
            height: 2px;
            background: var(--primary);
        }
        .section-title {
            font-size: clamp(28px, 3vw, 44px);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.03em;
        }
        .section-sub {
            max-width: 420px;
            color: var(--ink-soft);
            line-height: 1.7;
            font-size: 15px;
        }

        /* ===== 4 step timeline ===== */
        .timeline-after {
            background: var(--bg-dark);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .timeline-after .section-title {
            color: #fff;
        }
        .timeline-after .section-sub {
            color: rgba(255, 255, 255, 0.66);
        }
        .timeline-after .container {
            position: relative;
            z-index: 2;
        }
        .timeline-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-top: 20px;
            position: relative;
        }
        .timeline-row::before {
            content: "";
            position: absolute;
            top: 28px;
            left: 4%;
            right: 4%;
            border-top: 1px dashed rgba(255, 255, 255, 0.22);
        }
        .timeline-item {
            position: relative;
            padding-top: 12px;
        }
        .timeline-dot {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--primary);
            color: #0C100B;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-mono);
            font-size: 17px;
            font-weight: 700;
            position: relative;
            z-index: 2;
            margin-bottom: 18px;
        }
        .timeline-item h3 {
            color: #fff;
            font-size: 20px;
            margin: 0 0 10px;
        }
        .timeline-item p {
            color: rgba(255, 255, 255, 0.66);
            font-size: 15px;
            line-height: 1.7;
        }

        /* ===== Feature section ===== */
        .feature-main-card {
            background: var(--bg-dark);
            border-radius: var(--radius);
            color: #fff;
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-height: 360px;
            position: relative;
        }
        .feature-main-card .feature-bg {
            position: absolute;
            right: -20px;
            bottom: -20px;
            width: 270px;
            height: 270px;
            object-fit: cover;
            opacity: 0.55;
            transform: rotate(3deg);
        }
        .feature-main-content {
            position: relative;
            padding: 32px;
            z-index: 2;
        }
        .feature-main-content .fcode {
            color: var(--primary);
            font-family: var(--font-mono);
            font-size: 13px;
            letter-spacing: 0.08em;
        }
        .feature-main-content h3 {
            color: #fff;
            font-size: 28px;
            margin: 18px 0 12px;
            max-width: 300px;
        }
        .feature-main-content p {
            color: rgba(255, 255, 255, 0.68);
            font-size: 14px;
            line-height: 1.7;
            max-width: 260px;
        }
        .feature-stats {
            display: flex;
            gap: 30px;
            border-top: 1px solid var(--line-dark);
            padding: 18px 32px;
        }
        .stat-num {
            font-family: var(--font-mono);
            font-size: 26px;
            font-weight: 700;
            color: var(--primary);
            display: block;
            line-height: 1.1;
        }
        .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 5px;
            display: block;
        }
        .feature-card {
            background: var(--bg-surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 26px;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: box-shadow .2s;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-soft);
        }
        .feature-icon {
            width: 42px;
            height: 42px;
            border-radius: 3px;
            background: var(--primary);
            color: #0C100B;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 18px;
        }
        .feature-card h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }
        .feature-card p {
            color: var(--ink-soft);
            font-size: 14px;
            line-height: 1.7;
        }
        .feature-stack .feature-card+.feature-card {
            margin-top: 24px;
        }
        .feature-banner {
            border-radius: var(--radius);
            overflow: hidden;
            display: flex;
            background: var(--bg-dark);
            color: #fff;
            height: 100%;
            min-height: 200px;
        }
        .feature-banner img {
            width: 42%;
            object-fit: cover;
            min-height: 100%;
        }
        .feature-banner-content {
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .feature-banner-content h3 {
            color: #fff;
            font-size: 22px;
            margin-bottom: 10px;
        }
        .feature-banner-content p {
            color: rgba(255, 255, 255, 0.66);
            font-size: 14px;
            line-height: 1.7;
            max-width: 440px;
        }

        /* ===== Version compare ===== */
        .version-section {
            background: var(--bg-dark);
            color: #fff;
            padding: 100px 0;
        }
        .version-section .section-title {
            color: #fff;
        }
        .version-section .section-sub {
            color: rgba(255, 255, 255, 0.62);
        }
        .version-main-card {
            background: #1B201A;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            padding: 36px;
            color: #fff;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .version-main-card .v-tag {
            display: inline-block;
            background: var(--primary);
            color: #0C100B;
            font-size: 12px;
            font-weight: 700;
            padding: 5px 10px;
            border-radius: 2px;
            letter-spacing: 0.05em;
            margin-bottom: 20px;
        }
        .version-main-card h3 {
            color: #fff;
            font-size: 28px;
        }
        .version-main-card .v-version {
            font-family: var(--font-mono);
            font-size: 17px;
            color: var(--primary);
            margin-bottom: 24px;
        }
        .v-list {
            list-style: none;
            margin: 0 0 30px;
            padding: 0;
            flex: 1;
        }
        .v-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: rgba(255, 255, 255, 0.76);
            font-size: 14px;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .v-list li i {
            color: var(--primary);
            margin-top: 3px;
        }
        .v-list li i.fa-minus {
            color: rgba(255, 255, 255, 0.3);
        }
        .version-sub-card {
            background: #1B201A;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            padding: 28px;
            color: #fff;
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .version-sub-card h3 {
            color: #fff;
            font-size: 19px;
            margin-bottom: 4px;
        }
        .v-version-sub {
            font-family: var(--font-mono);
            font-size: 14px;
            color: var(--ink-mute);
            margin-bottom: 18px;
        }
        .version-sub-card .v-list li {
            color: rgba(255, 255, 255, 0.64);
            font-size: 14px;
        }
        .v-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 20px;
        }
        .v-bottom .link-arrow {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            transition: gap .2s;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .v-bottom .link-arrow i {
            transition: transform .2s;
        }
        .v-bottom .link-arrow:hover i {
            transform: translateX(4px);
        }
        .btn-sm-custom {
            padding: 10px 18px;
            font-size: 14px;
        }

        /* ===== CTA Panel ===== */
        .cta-panel-wrapper {
            padding: 100px 0;
        }
        .cta-panel {
            background: var(--bg-dark);
            border-radius: var(--radius-lg);
            color: #fff;
            padding: 64px 70px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 50px;
            position: relative;
            overflow: hidden;
        }
        .cta-panel:after {
            content: "mksports";
            position: absolute;
            right: 24px;
            bottom: -38px;
            font-size: 120px;
            font-weight: 900;
            color: rgba(255, 255, 255, 0.045);
            letter-spacing: -0.05em;
            pointer-events: none;
            font-family: var(--font-main);
        }
        .cta-panel .cta-heading {
            flex: 0 0 62%;
            position: relative;
            z-index: 2;
        }
        .cta-panel h2 {
            color: #fff;
            font-size: clamp(26px, 3vw, 40px);
        }
        .cta-panel p {
            color: rgba(255, 255, 255, 0.65);
            margin-top: 14px;
            font-size: 15px;
            line-height: 1.7;
        }
        .cta-panel .cta-buttons {
            display: flex;
            flex-direction: column;
            gap: 12px;
            position: relative;
            z-index: 2;
        }

        /* ===== News / CMS ===== */
        .news-section {
            background: var(--bg-surface);
            padding: 100px 0;
        }
        .news-empty {
            border: 1px dashed var(--line);
            border-radius: var(--radius);
            padding: 44px 30px;
            text-align: center;
            color: var(--ink-mute);
            font-size: 15px;
        }
        .news-focus-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-bottom: 36px;
        }
        .news-focus-card {
            border: 1px solid var(--line);
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: box-shadow .2s, transform .2s;
        }
        .news-focus-card:hover {
            box-shadow: var(--shadow-soft);
            transform: translateY(-3px);
        }
        .news-focus-card .focus-thumb {
            aspect-ratio: 16/9;
            overflow: hidden;
            display: block;
            background: var(--bg-dark);
        }
        .news-focus-card .focus-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .45s;
        }
        .news-focus-card:hover .focus-thumb img {
            transform: scale(1.03);
        }
        .news-focus-card .focus-body {
            padding: 20px;
            display: block;
        }
        .news-focus-card .focus-cat {
            display: inline-block;
            font-size: 12px;
            background: var(--bg-dark);
            color: #fff;
            padding: 4px 10px;
            border-radius: 99px;
            margin-bottom: 12px;
        }
        .news-focus-card .focus-title {
            display: block;
            font-weight: 700;
            color: var(--ink-strong);
            line-height: 1.5;
            font-size: 16px;
            margin-bottom: 10px;
        }
        .news-focus-card .focus-title:hover {
            color: #0C100B;
            text-decoration: underline;
        }
        .news-focus-card .focus-date {
            font-family: var(--font-mono);
            color: var(--ink-mute);
            font-size: 13px;
        }
        .cms-list {
            border-top: 1px solid var(--line);
        }
        .cms-list-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            padding: 22px 4px;
            border-bottom: 1px solid var(--line);
            transition: background .15s;
        }
        .cms-list-row:hover {
            background: rgba(198, 241, 62, 0.05);
        }
        .cms-list-row .list-main {
            min-width: 0;
        }
        .cms-list-row .list-title {
            font-weight: 700;
            color: var(--ink-strong);
            font-size: 17px;
            display: inline-block;
            transition: color .2s;
        }
        .cms-list-row:hover .list-title {
            color: #7FA000;
        }
        .cms-list-row .list-summary {
            display: block;
            color: var(--ink-soft);
            font-size: 14px;
            line-height: 1.6;
            margin-top: 6px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 600px;
        }
        .cms-list-row .list-meta {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-shrink: 0;
        }
        .cms-list-row .list-tag {
            font-size: 12px;
            border: 1px solid var(--line);
            border-radius: 99px;
            padding: 5px 14px;
            color: var(--ink-soft);
            background: #fff;
        }
        .cms-list-row .list-date {
            font-family: var(--font-mono);
            color: var(--ink-mute);
            font-size: 13px;
            min-width: 80px;
            text-align: right;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-page);
            padding: 100px 0;
        }
        .faq-left {
            position: sticky;
            top: 120px;
        }
        .faq-left .faq-guide {
            color: var(--ink-soft);
            font-size: 15px;
            margin-top: 18px;
            line-height: 1.8;
            padding-right: 30px;
        }
        .accordion {
            background: transparent;
        }
        .accordion-item {
            background: transparent;
            border: 0;
            border-bottom: 1px solid var(--line);
            border-radius: 0 !important;
        }
        .accordion-item .accordion-header {
            border-radius: 0;
        }
        .accordion-button {
            background: transparent;
            box-shadow: none;
            color: var(--ink-strong);
            font-weight: 700;
            font-size: 16px;
            padding: 24px 40px 24px 0;
            border-radius: 0 !important;
        }
        .accordion-button:not(.collapsed) {
            background: transparent;
            color: #0C100B;
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: none;
            border: 0;
        }
        .accordion-button::after {
            background-image: none;
            content: "+";
            font-family: var(--font-mono);
            font-size: 24px;
            color: var(--ink-mute);
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 300;
            transform: none;
            transition: transform .2s;
        }
        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            background-image: none;
            color: var(--ink-strong);
        }
        .accordion-body {
            padding: 0 44px 28px 0;
            color: var(--ink-soft);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-extra-tip {
            margin-top: 44px;
            background: #fff;
            border-left: 3px solid var(--primary);
            border-radius: 0 var(--radius) var(--radius) 0;
            padding: 20px 24px;
            font-size: 14px;
            color: var(--ink-soft);
            line-height: 1.7;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.72);
            position: relative;
        }
        .footer-main {
            padding: 76px 0 40px;
        }
        .site-footer .brand-logo-footer {
            display: block;
            font-size: 26px;
            font-weight: 900;
            color: #fff;
            margin-bottom: 4px;
        }
        .site-footer .brand-logo-footer small {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            margin-left: 4px;
        }
        .footer-desc {
            color: rgba(255, 255, 255, 0.5);
            font-size: 14px;
            line-height: 1.8;
            margin-top: 16px;
            padding-right: 30px;
        }
        .footer-title {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 11px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color .2s;
            position: relative;
        }
        .footer-links a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .footer-keywords {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 16px;
        }
        .footer-keywords a {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 99px;
            padding: 4px 12px;
            transition: all .2s;
        }
        .footer-keywords a:hover {
            background: var(--primary);
            color: #0C100B;
            border-color: var(--primary);
            text-decoration: none;
        }
        .footer-contact li {
            color: rgba(255, 255, 255, 0.5);
            font-size: 14px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.09);
            padding: 22px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            color: rgba(255, 255, 255, 0.32);
            font-size: 13px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199px) {
            .hero-visual .float-version {
                right: 10px;
            }
            .cms-list-row .list-summary {
                max-width: 400px;
            }
            .cta-panel {
                padding: 44px 40px;
            }
        }
        @media (max-width: 991px) {
            .header-nav {
                position: fixed;
                top: 76px;
                left: 0;
                right: 0;
                background: #faf8f2;
                flex-direction: column;
                align-items: flex-start;
                padding: 26px 28px 40px;
                border-bottom: 1px solid var(--line);
                box-shadow: 0 24px 40px rgba(20, 18, 10, 0.08);
                transform: translateY(-12px);
                opacity: 0;
                visibility: hidden;
                transition: all .28s ease;
                z-index: 999;
            }
            .header-nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .main-menu {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
            .main-menu li a {
                padding: 12px 4px;
                font-size: 17px;
            }
            .header-cta {
                margin-top: 20px;
                width: 100%;
            }
            .header-cta .btn {
                width: 100%;
            }
            .hamburger {
                display: inline-flex;
            }
            .hero-section {
                text-align: center;
                padding: 60px 0 80px;
            }
            .hero-section h1 {
                max-width: none;
                font-size: clamp(36px, 8vw, 52px);
            }
            .hero-desc {
                margin-left: auto;
                margin-right: auto;
                max-width: 520px;
            }
            .hero-actions {
                justify-content: center;
            }
            .safe-tags {
                justify-content: center;
                gap: 18px;
            }
            .hero-visual {
                margin-top: 60px;
                max-width: 530px;
            }
            .hero-figure img {
                height: 320px;
                width: 100%;
            }
            .float-version {
                right: 0;
            }
            .float-sec {
                left: 0;
            }
            .section-pad {
                padding: 80px 0;
            }
            .version-section {
                padding: 80px 0;
            }
            .news-section {
                padding: 80px 0;
            }
            .faq-section {
                padding: 80px 0;
            }
            .section-header-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 14px;
            }
            .feature-banner {
                flex-direction: column;
            }
            .feature-banner img {
                width: 100%;
                height: 220px;
            }
            .footer-main .col-lg-3 {
                margin-bottom: 40px;
            }
            .cta-panel {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-panel .cta-heading {
                flex-basis: auto;
                width: 100%;
            }
            .cta-panel .cta-buttons {
                flex-direction: row;
                flex-wrap: wrap;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                height: 68px;
            }
            .hero-section {
                margin-top: 68px;
                min-height: auto;
            }
            .header-nav {
                top: 68px;
            }
            .timeline-row {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .timeline-row::before {
                display: none;
            }
            .timeline-item {
                display: flex;
                gap: 22px;
                padding-top: 0;
                padding-bottom: 30px;
                border-bottom: 1px solid var(--line-dark);
            }
            .timeline-dot {
                flex-shrink: 0;
                margin-bottom: 0;
            }
            .section-pad {
                padding: 60px 0;
            }
            .version-section {
                padding: 60px 0;
            }
            .news-section {
                padding: 60px 0;
            }
            .faq-section {
                padding: 60px 0;
            }
            .cta-panel-wrapper {
                padding: 60px 0;
            }
            .cta-panel {
                padding: 36px 28px;
            }
            .news-focus-grid {
                grid-template-columns: 1fr;
            }
            .cms-list-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .cms-list-row .list-summary {
                white-space: normal;
                max-width: 100%;
                display: -webkit-box;
                -webkit-line-clamp: 2;
                -webkit-box-orient: vertical;
                overflow: hidden;
            }
            .cms-list-row .list-meta {
                width: 100%;
                justify-content: space-between;
            }
            .cms-list-row .list-date {
                text-align: left;
            }
            .footer-bottom {
                flex-direction: column;
            }
        }
        @media (max-width: 520px) {
            .logo-main {
                font-size: 20px;
            }
            .logo-badge {
                font-size: 10px;
                padding: 2px 6px;
            }
            .logo-sub {
                font-size: 11px;
            }
            .hero-section {
                padding-top: 50px;
                padding-bottom: 56px;
            }
            .hero-section h1 {
                font-size: 34px;
                line-height: 1.18;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .safe-tags {
                flex-direction: column;
                align-items: center;
                gap: 14px;
                margin-top: 40px;
                padding-top: 20px;
            }
            .hero-figure img {
                height: 260px;
            }
            .hero-float-card {
                padding: 10px 14px;
                min-width: 160px;
            }
            .hero-float-card .fnum {
                font-size: 18px;
            }
            .float-sec {
                min-width: 180px;
            }
            .feature-main-content {
                padding: 24px;
            }
            .feature-main-card .feature-bg {
                width: 180px;
                height: 180px;
            }
            .feature-stats {
                padding: 16px 24px;
                gap: 20px;
            }
            .cta-panel .cta-buttons {
                flex-direction: column;
                width: 100%;
            }
            .cta-panel .cta-buttons .btn {
                width: 100%;
            }
            .section-title {
                font-size: 28px;
            }
            .section-header-row,
            .faq-left {
                margin-bottom: 24px;
            }
            .footer-main {
                padding: 56px 0 30px;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *:before,
            *:after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: article */
:root {
            --bg-page: #F4F2EC;
            --bg-surface: #FFFFFF;
            --bg-dark: #0C100B;
            --ink-strong: #17191A;
            --ink-soft: #5F645F;
            --ink-mute: #9A9E97;
            --primary: #C6F13E;
            --accent: #FF4B2E;
            --line: #E3DFD6;
            --line-dark: rgba(255, 255, 255, 0.14);
            --radius: 4px;
            --radius-lg: 8px;
            --shadow-1: 0 12px 30px rgba(20, 18, 10, 0.08);
            --font-mono: "SF Mono", "JetBrains Mono", Consolas, monospace;
            --transition: all 0.25s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg-page);
            color: var(--ink-strong);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(244, 242, 236, 0.86);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid transparent;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            border-bottom-color: var(--line);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 16px;
        }
        .site-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-line {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo-main {
            font-weight: 900;
            font-size: 24px;
            line-height: 1.2;
            color: var(--ink-strong);
            letter-spacing: -0.02em;
        }
        .logo-badge {
            background: var(--bg-dark);
            color: var(--primary);
            font-size: 10px;
            font-weight: 700;
            padding: 3px 8px;
            border-radius: 20px;
            letter-spacing: 0.1em;
            line-height: 1.4;
            white-space: nowrap;
        }
        .logo-sub {
            display: block;
            font-size: 11px;
            color: var(--ink-soft);
            letter-spacing: 0.2em;
            font-weight: 500;
            line-height: 1.2;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 27px;
            flex: 1;
            justify-content: flex-end;
        }
        .main-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-menu li a {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--ink-strong);
            padding: 8px 14px;
            display: block;
            transition: color 0.2s;
        }
        .main-menu li a::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.3s ease;
        }
        .main-menu li a:hover::after,
        .main-menu li a.active::after {
            transform: scaleX(1);
        }
        .main-menu li a.active {
            font-weight: 700;
        }
        .main-menu li a .dot {
            display: inline-block;
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--primary);
            margin-left: 6px;
            vertical-align: middle;
            opacity: 0;
        }
        .main-menu li a.active .dot {
            opacity: 1;
        }
        .btn-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            border-radius: var(--radius);
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            font-size: 15px;
        }
        .btn-primary-custom {
            background: var(--bg-dark);
            color: var(--primary);
            padding: 12px 26px;
            border: 1px solid var(--bg-dark);
        }
        .btn-primary-custom:hover {
            background: var(--primary);
            color: var(--bg-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(198, 241, 62, 0.22);
        }
        .btn-sm-custom {
            padding: 9px 20px;
            font-size: 14px;
        }
        .btn-outline-custom {
            border: 1px solid var(--line);
            color: var(--ink-strong);
            background: transparent;
            padding: 11px 24px;
        }
        .btn-outline-custom:hover {
            border-color: var(--bg-dark);
            background: var(--bg-dark);
            color: var(--primary);
        }
        .hamburger {
            display: none;
            width: 44px;
            height: 44px;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            background: var(--bg-surface);
            cursor: pointer;
            position: relative;
            z-index: 1101;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
        }
        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--ink-strong);
            transition: var(--transition);
            border-radius: 2px;
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        @media (max-width: 992px) {
            .header-nav {
                position: fixed;
                top: 0;
                right: 0;
                bottom: 0;
                width: 320px;
                max-width: 90vw;
                background: var(--bg-surface);
                flex-direction: column;
                justify-content: flex-start;
                align-items: flex-start;
                padding: 90px 32px 32px;
                transform: translateX(100%);
                transition: transform 0.35s ease;
                box-shadow: -20px 0 60px rgba(0, 0, 0, 0.1);
                overflow-y: auto;
                z-index: 1100;
            }
            .header-nav.open {
                transform: translateX(0);
            }
            .main-menu {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
                width: 100%;
            }
            .main-menu li a {
                font-size: 18px;
                padding: 10px 0;
                width: 100%;
            }
            .main-menu li a::after {
                left: 0;
                bottom: 4px;
            }
            .header-cta {
                width: 100%;
                margin-top: 30px;
            }
            .header-cta .btn {
                width: 100%;
            }
            .hamburger {
                display: inline-flex;
            }
        }
        @media (max-width: 576px) {
            .header-inner {
                height: 66px;
            }
            .logo-main {
                font-size: 20px;
            }
            .logo-badge {
                display: none;
            }
            .logo-sub {
                font-size: 9px;
            }
        }

        .site-body {
            padding-top: 76px;
        }
        @media (max-width: 576px) {
            .site-body {
                padding-top: 66px;
            }
        }

        .article-breadcrumb {
            background: var(--bg-page);
            border-bottom: 1px solid var(--line);
            padding: 16px 0;
            font-size: 13px;
            color: var(--ink-mute);
        }
        .article-breadcrumb-inner {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-breadcrumb a {
            color: var(--ink-soft);
            transition: color 0.2s;
        }
        .article-breadcrumb a:hover {
            color: var(--ink-strong);
            text-decoration: underline;
        }
        .article-breadcrumb .bc-sep {
            color: var(--ink-mute);
            margin: 0 2px;
        }
        .article-breadcrumb .bc-current {
            color: var(--ink-strong);
            font-weight: 500;
            max-width: 380px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .article-section {
            padding: 56px 0 90px;
        }
        .article-layout {
            display: flex;
            gap: 48px;
            align-items: flex-start;
        }
        .article-main-col {
            flex: 1;
            min-width: 0;
        }
        .article-side-col {
            width: 300px;
            flex-shrink: 0;
            position: sticky;
            top: 116px;
            max-height: calc(100vh - 150px);
            overflow-y: auto;
        }
        .article-header-block {
            background: var(--bg-surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 44px 44px 32px;
            margin-bottom: 28px;
        }
        .article-category-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--ink-strong);
            background: var(--primary);
            padding: 4px 12px;
            border-radius: 40px;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }
        .article-title {
            font-size: clamp(28px, 3.4vw, 42px);
            font-weight: 900;
            line-height: 1.3;
            letter-spacing: -0.02em;
            color: var(--ink-strong);
            margin-bottom: 18px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: var(--ink-soft);
            border-top: 1px solid var(--line);
            padding-top: 20px;
        }
        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-year {
            font-family: var(--font-mono);
        }
        .article-meta .sep {
            color: var(--ink-mute);
        }
        .article-content-card {
            background: var(--bg-surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 44px 48px 56px;
        }
        .article-content {
            max-width: 760px;
            margin: 0 auto;
        }
        .article-content p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--ink-strong);
            margin-bottom: 24px;
        }
        .article-content h2 {
            font-size: 28px;
            font-weight: 800;
            margin: 48px 0 18px;
            line-height: 1.3;
            padding-left: 16px;
            border-left: 4px solid var(--primary);
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 36px 0 14px;
            line-height: 1.4;
        }
        .article-content img {
            display: block;
            width: 100%;
            margin: 32px auto;
            object-fit: cover;
            border-radius: var(--radius);
        }
        .article-content ul {
            list-style: disc;
            padding-left: 22px;
            margin-bottom: 24px;
            color: var(--ink-strong);
            font-size: 16px;
            line-height: 1.85;
        }
        .article-content ol {
            list-style: decimal;
            padding-left: 22px;
            margin-bottom: 24px;
            color: var(--ink-strong);
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(198, 241, 62, 0.06);
            padding: 18px 24px;
            margin: 28px 0;
            color: var(--ink-soft);
            font-style: normal;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        a.article-link {
            color: var(--ink-strong);
            text-decoration: underline;
            text-underline-offset: 4px;
            text-decoration-color: var(--primary);
            transition: color 0.2s;
        }
        a.article-link:hover {
            color: var(--primary);
        }
        .article-tags {
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--line);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .article-tag-chip {
            display: inline-block;
            font-family: var(--font-mono);
            font-size: 12px;
            padding: 4px 12px;
            border: 1px solid var(--line);
            border-radius: 40px;
            color: var(--ink-soft);
            background: var(--bg-page);
            transition: var(--transition);
        }
        .article-tag-chip:hover {
            border-color: var(--ink-strong);
            background: var(--bg-dark);
            color: var(--primary);
            cursor: default;
        }

        .article-side-col .side-card {
            background: var(--bg-surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 26px 28px;
            margin-bottom: 22px;
        }
        .side-card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink-strong);
            padding-bottom: 14px;
            margin-bottom: 12px;
            border-bottom: 2px solid var(--bg-dark);
            position: relative;
        }
        .side-card-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 40px;
            height: 2px;
            background: var(--primary);
        }
        .side-toc-list li {
            margin-bottom: 6px;
        }
        .side-toc-list a {
            display: block;
            font-size: 14px;
            color: var(--ink-soft);
            padding: 7px 10px;
            border-radius: var(--radius);
            border-left: 2px solid transparent;
            transition: var(--transition);
            line-height: 1.5;
        }
        .side-toc-list a:hover {
            color: var(--ink-strong);
            background: rgba(198, 241, 62, 0.06);
            border-left-color: var(--primary);
        }
        .side-link-group li {
            border-bottom: 1px dashed var(--line);
        }
        .side-link-group li:last-child {
            border-bottom: none;
        }
        .side-link-group a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--ink-strong);
            padding: 12px 8px;
            transition: var(--transition);
        }
        .side-link-group a i {
            color: var(--primary);
            font-size: 16px;
            width: 18px;
            text-align: center;
            color: var(--bg-dark);
        }
        .side-link-group a:hover {
            color: var(--ink-soft);
            padding-left: 14px;
        }
        .side-btn-return {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            border: 1px solid var(--line);
            color: var(--ink-strong);
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius);
            padding: 13px 0;
            transition: var(--transition);
        }
        .side-btn-return:hover {
            border-color: var(--bg-dark);
            background: var(--bg-dark);
            color: var(--primary);
        }
        @media (max-width: 1199px) {
            .article-layout {
                gap: 28px;
            }
            .article-side-col {
                width: 270px;
            }
        }
        @media (max-width: 992px) {
            .article-layout {
                display: block;
            }
            .article-side-col {
                position: static;
                width: 100%;
                max-height: none;
                margin-top: 40px;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .side-card {
                margin-bottom: 0;
            }
        }
        @media (max-width: 768px) {
            .article-section {
                padding: 36px 0 60px;
            }
            .article-header-block {
                padding: 30px 24px 24px;
            }
            .article-content-card {
                background: var(--bg-surface);
                border: 1px solid var(--line);
                border-radius: var(--radius-lg);
                padding: 24px 24px 36px;
            }
            .article-content {
                max-width: none;
            }
        }
        @media (max-width: 560px) {
            .article-side-col {
                grid-template-columns: 1fr;
            }
            .article-header-block {
                border-radius: var(--radius);
            }
            .article-content-card {
                border-radius: var(--radius);
            }
        }

        .related-section {
            background: var(--bg-surface);
            border-bottom: 1px solid var(--line);
            padding: 64px 0;
        }
        .related-title {
            font-size: 24px;
            font-weight: 800;
            color: var(--ink-strong);
            margin-bottom: 30px;
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .related-title .title-line {
            width: 32px;
            height: 3px;
            background: var(--primary);
            display: inline-block;
            border-radius: 4px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .related-card {
            border: 1px solid var(--line);
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg-surface);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .related-card:hover {
            box-shadow: 0 14px 34px rgba(20, 18, 10, 0.08);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .related-thumb {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-dark);
        }
        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .related-thumb img {
            transform: scale(1.04);
        }
        .related-body {
            padding: 18px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .related-date {
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--ink-mute);
        }
        .related-body a h4 {
            font-size: 17px;
            line-height: 1.5;
            font-weight: 700;
            color: var(--ink-strong);
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.2s;
        }
        .related-body a:hover h4 {
            color: var(--ink-soft);
        }
        @media (max-width: 992px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 600px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-section {
                padding: 48px 0;
            }
        }

        .site-footer {
            background: var(--bg-dark);
            color: #fff;
            padding: 72px 0 32px;
            border-radius: 0;
        }
        .footer-main {
            margin-bottom: 36px;
        }
        .brand-logo-footer {
            display: block;
            font-size: 30px;
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .brand-logo-footer small {
            font-size: 13px;
            color: var(--primary);
            display: block;
            font-weight: 500;
            letter-spacing: 0.16em;
            margin-top: 6px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            margin: 20px 0;
            max-width: 90%;
        }
        .footer-keywords {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-keywords a {
            display: inline-block;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.7);
            border: 1px solid var(--line-dark);
            border-radius: 40px;
            padding: 4px 14px;
            transition: var(--transition);
        }
        .footer-keywords a:hover {
            color: #fff;
            border-color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
        }
        .footer-title {
            font-size: 15px;
            color: #fff;
            font-weight: 700;
            margin-bottom: 22px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            background: var(--primary);
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        .footer-contact li {
            color: rgba(255, 255, 255, 0.55);
            font-size: 13px;
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .footer-bottom {
            border-top: 1px solid var(--line-dark);
            padding-top: 26px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .copyright {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            margin: 0;
            font-family: var(--font-mono);
        }
        .footer-legal {
            display: flex;
            gap: 16px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
        }
        @media (max-width: 768px) {
            .site-footer {
                padding: 48px 0 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        .back-to-index {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--ink-strong);
            transition: gap 0.3s;
        }
        .back-to-index:hover {
            gap: 10px;
            color: var(--ink-soft);
        }
        .btn-return-category {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 11px 26px;
            font-size: 14px;
            color: var(--ink-strong);
            border: 2px solid var(--ink-strong);
            border-radius: var(--radius);
            font-weight: 600;
            background: transparent;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-return-category:hover {
            background: var(--ink-strong);
            color: #fff;
            border-color: var(--ink-strong);
        }
        .article-not-found {
            background: var(--bg-surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 80px 48px;
            text-align: center;
        }
        .article-not-found-code {
            font-family: var(--font-mono);
            font-size: 14px;
            color: var(--primary);
            background: var(--bg-dark);
            display: inline-block;
            padding: 6px 18px;
            border-radius: 30px;
            margin-bottom: 20px;
        }
        .article-not-found h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--ink-strong);
            margin-bottom: 12px;
        }
        @media (max-width: 768px) {
            .article-not-found {
                padding: 40px 24px;
            }
        }

        .site-header.scrolled {
            border-bottom: 1px solid var(--line);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }

        .btn-primary-custom,
        .btn-outline-custom {
            outline: none;
        }
        .btn-primary-custom:focus-visible,
        .btn-outline-custom:focus-visible,
        .hamburger:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        .article-content h1:focus-visible,
        .article-title:focus-visible {
            outline: none;
        }
        @media (max-width: 768px) {
            .article-content p {
                font-size: 15px;
            }
            .article-content h2 {
                font-size: 23px;
            }
            .article-content h3 {
                font-size: 18px;
            }
        }

/* roulang page: category1 */
:root{
            --bg-page:#F4F2EC;
            --bg-surface:#FFFFFF;
            --bg-dark:#0C100B;
            --ink-strong:#17191A;
            --ink-soft:#5F645F;
            --ink-mute:#9A9E97;
            --primary:#C6F13E;
            --primary-hover:#D3F85D;
            --accent:#FF4B2E;
            --line:#E3DFD6;
            --line-dark:rgba(255,255,255,.14);
            --font-mono:"SF Mono","JetBrains Mono",Consolas,"Liberation Mono",monospace;
            --radius-card:3px;
            --radius-btn:2px;
            --shadow-hover:0 12px 30px rgba(20,18,10,.08);
            --header-h:78px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{
            margin:0;
            background:var(--bg-page);
            color:var(--ink-strong);
            font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
            font-size:15px;
            line-height:1.8;
            -webkit-font-smoothing:antialiased;
        }
        img{max-width:100%;display:block}
        a{color:var(--ink-strong);text-decoration:none;transition:color .25s,background .25s,border-color .25s,transform .25s}
        button{font-family:inherit}
        ul,ol{padding-left:0;list-style:none;margin:0}
        .container{max-width:1240px;padding-left:24px;padding-right:24px}
        ::selection{background:var(--primary);color:var(--bg-dark)}
        :focus-visible{
            outline:2px solid var(--primary);
            outline-offset:3px;
            border-radius:2px;
        }

        /* shared header */
        .site-header{
            position:fixed;
            top:0;left:0;right:0;
            z-index:1080;
            height:var(--header-h);
            background:rgba(244,242,236,.88);
            backdrop-filter:blur(14px);
            -webkit-backdrop-filter:blur(14px);
            border-bottom:1px solid transparent;
            transition:box-shadow .3s,border-color .3s,background .3s;
        }
        .site-header.scrolled{
            background:rgba(251,250,246,.95);
            border-bottom-color:var(--line);
            box-shadow:0 8px 24px rgba(20,18,10,.05);
        }
        .header-inner{
            height:var(--header-h);
            display:flex;
            align-items:center;
            justify-content:space-between;
            gap:24px;
        }
        .site-logo{display:inline-flex;align-items:center;flex-shrink:0}
        .site-logo span{display:flex;flex-direction:column;line-height:1.1}
        .logo-line{display:flex;align-items:center;gap:8px}
        .logo-main{
            font-size:24px;
            font-weight:900;
            letter-spacing:-.02em;
            color:var(--ink-strong);
            font-family:var(--font-mono);
        }
        .logo-badge{
            background:var(--primary);
            color:var(--bg-dark);
            font-size:11px;
            font-weight:700;
            padding:2px 8px;
            border-radius:999px;
            letter-spacing:.02em;
        }
        .logo-sub{
            font-size:12px;
            color:var(--ink-soft);
            letter-spacing:.04em;
            margin-top:1px;
        }
        .header-nav{display:flex;align-items:center;gap:24px}
        .main-menu{display:flex;align-items:center;gap:30px;margin:0;padding:0;list-style:none}
        .main-menu a{
            color:var(--ink-soft);
            font-size:15px;
            font-weight:500;
            padding:6px 0;
            position:relative;
            transition:color .3s;
        }
        .main-menu a::after{
            content:"";
            position:absolute;
            left:0;bottom:-2px;
            width:0;height:2px;
            background:var(--primary);
            transition:width .35s ease;
        }
        .main-menu a:hover,.main-menu a.active{
            color:var(--ink-strong);
            font-weight:700;
        }
        .main-menu a:hover::after,.main-menu a.active::after{width:100%}
        .header-cta{margin-left:8px}
        .hamburger{
            display:none;
            width:46px;height:46px;
            padding:12px 10px;
            background:transparent;
            border:1px solid var(--line);
            border-radius:2px;
            flex-direction:column;
            justify-content:space-between;
            align-items:center;
            cursor:pointer;
        }
        .hamburger span{
            display:block;
            width:100%;height:2px;
            background:var(--ink-strong);
            transition:transform .3s,opacity .3s;
        }
        .hamburger.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
        .hamburger.active span:nth-child(2){opacity:0}
        .hamburger.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

        .btn{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            gap:10px;
            height:50px;
            padding:0 26px;
            border-radius:var(--radius-btn);
            font-weight:700;
            font-size:15px;
            letter-spacing:.01em;
            border:1px solid transparent;
            transition:background .3s,color .3s,transform .25s,border-color .3s,box-shadow .3s;
            cursor:pointer;
        }
        .btn-primary-custom{
            background:var(--primary) !important;
            color:var(--bg-dark) !important;
            border-color:var(--primary) !important;
        }
        .btn-primary-custom:hover{
            background:var(--primary-hover) !important;
            border-color:var(--primary-hover) !important;
            transform:translateY(-2px);
            box-shadow:var(--shadow-hover);
        }
        .btn-dark-custom{
            background:var(--bg-dark) !important;
            color:var(--primary) !important;
            border-color:var(--bg-dark) !important;
        }
        .btn-dark-custom:hover{
            background:#24281f !important;
            border-color:#24281f !important;
            transform:translateY(-2px);
            box-shadow:var(--shadow-hover);
        }
        .btn-outline-ink{
            background:transparent !important;
            border:1.5px solid #17191a !important;
            color:var(--ink-strong) !important;
        }
        .btn-outline-ink:hover{
            background:var(--bg-dark) !important;
            border-color:var(--bg-dark) !important;
            color:#fff !important;
        }
        .btn-sm-custom{height:42px;padding:0 20px;font-size:14px;border-radius:2px}
        .btn .fi{margin-left:4px;transition:transform .25s}
        .btn:hover .fi{transform:translateX(4px)}

        .section{position:relative;padding:100px 0}
        .section-heading{
            display:flex;
            align-items:flex-start;
            justify-content:space-between;
            gap:40px;
            margin-bottom:48px;
        }
        .section-kicker{
            display:inline-flex;
            align-items:center;
            gap:8px;
            font-family:var(--font-mono);
            font-size:12px;
            font-weight:700;
            letter-spacing:.12em;
            color:var(--ink-soft);
            text-transform:uppercase;
            margin-bottom:12px;
        }
        .section-kicker::before{
            content:"";
            width:26px;height:2px;
            background:var(--primary);
            display:inline-block;
        }
        .section-title{font-size:clamp(28px,3vw,44px);line-height:1.15;font-weight:800;letter-spacing:-.02em;margin:0 0 16px}
        .section-desc{font-size:16px;color:var(--ink-soft);line-height:1.85;max-width:780px;margin:0}
        .text-muted-soft{color:var(--ink-soft)}
        .chip-tag{
            display:inline-flex;
            align-items:center;
            gap:6px;
            height:28px;
            padding:0 12px;
            border-radius:999px;
            border:1px solid var(--line);
            background:var(--bg-surface);
            color:var(--ink-soft);
            font-size:12px;
            font-weight:600;
            white-space:nowrap;
        }
        .chip-tag.primary{background:var(--primary);border-color:var(--primary);color:var(--bg-dark)}
        .chip-tag.dark{background:var(--bg-dark);border-color:var(--bg-dark);color:#fff}
        .chip-tag .dot-accent{width:6px;height:6px;border-radius:50%;background:var(--accent)}

        .page-banner{
            min-height:320px;
            margin-top:calc(var(--header-h) * -1);
            padding:170px 0 70px;
            display:flex;
            align-items:center;
            position:relative;
            color:#fff;
            background-color:#11140F;
            background-image:linear-gradient(rgba(12,16,11,.55),rgba(12,16,11,.82)),url('/assets/images/backpic/back-1.webp');
            background-size:cover;
            background-position:center;
        }
        .page-banner::before{
            content:"";
            position:absolute;
            inset:0;
            background:linear-gradient(100deg,rgba(12,16,11,.75) 0%,rgba(12,16,11,.35) 70%,rgba(12,16,11,.08) 100%);
        }
        .page-banner .container{position:relative;z-index:2}
        .breadcrumb-line{
            font-size:13px;
            color:rgba(255,255,255,.72);
            margin-bottom:14px;
            letter-spacing:.03em;
        }
        .breadcrumb-line a{color:rgba(255,255,255,.8)}
        .breadcrumb-line a:hover{color:var(--primary)}
        .breadcrumb-line .sep{padding:0 7px;color:rgba(255,255,255,.4)}
        .breadcrumb-line .current{color:#fff}
        .page-banner h1{
            font-size:clamp(30px,3.8vw,51px);
            line-height:1.18;
            font-weight:900;
            letter-spacing:-.02em;
            margin:0 0 14px;
            max-width:1020px;
        }
        .page-banner h1 .underline-key{
            background:linear-gradient(transparent 68%,var(--primary) 68%);
            color:inherit;
            padding:0 2px;
        }
        .page-banner .banner-summary{
            font-size:16px;
            line-height:1.85;
            color:rgba(255,255,255,.88);
            max-width:720px;
            margin:0;
        }
        .banner-meta-bar{
            display:flex;
            flex-wrap:wrap;
            align-items:center;
            gap:12px 28px;
            margin-top:28px;
        }
        .banner-meta-bar div{
            display:flex;
            align-items:center;
            gap:8px;
            font-size:12px;
            font-family:var(--font-mono);
            letter-spacing:.06em;
            color:rgba(255,255,255,.88);
            background:rgba(255,255,255,.08);
            border:1px solid rgba(255,255,255,.16);
            border-radius:999px;
            padding:6px 14px;
            backdrop-filter:blur(6px);
        }
        .banner-meta-bar i{color:var(--primary);font-size:13px}

        /* download section */
        .download-tax-section{padding-bottom:100px}
        .download-stack{
            margin-top:-40px;
            position:relative;
            z-index:5;
            background:var(--bg-surface);
            border:1px solid var(--line);
            border-radius:var(--radius-card);
            box-shadow:0 20px 50px rgba(20,18,10,.07);
        }
        .entry-row{
            display:grid;
            grid-template-columns:72px minmax(0,1fr) auto;
            gap:28px;
            align-items:center;
            padding:34px 38px;
            border-bottom:1px solid var(--line);
            transition:background .3s,box-shadow .3s;
        }
        .entry-row:last-child{border-bottom:0}
        .entry-row:hover{background:#FBFAF6}
        .entry-icon{
            width:72px;height:72px;
            border-radius:3px;
            background:var(--primary);
            color:var(--bg-dark);
            display:flex;
            align-items:center;
            justify-content:center;
            font-family:var(--font-mono);
            font-size:20px;
            font-weight:900;
            letter-spacing:-.04em;
            box-shadow:inset 0 0 0 1px rgba(12,16,11,.08);
        }
        .entry-icon.dark{background:var(--bg-dark);color:var(--primary)}
        .entry-icon.outline{background:#fff;border:1.5px solid var(--bg-dark);color:var(--ink-strong)}
        .entry-content{min-width:0}
        .entry-tags{
            display:flex;
            flex-wrap:wrap;
            gap:8px;
            margin-bottom:9px;
        }
        .entry-content h3{font-size:20px;font-weight:800;margin:0 0 8px;letter-spacing:-.01em}
        .entry-content p{font-size:15px;line-height:1.8;color:var(--ink-soft);margin:0 0 12px;max-width:880px}
        .entry-props{
            display:flex;
            flex-wrap:wrap;
            gap:8px 22px;
            color:var(--ink-soft);
            font-size:13px;
        }
        .entry-props span{display:inline-flex;align-items:center;gap:7px;white-space:nowrap}
        .entry-props i{color:var(--primary);width:12px;font-size:12px}
        .entry-props .label{font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--ink-mute)}
        .entry-action{
            width:170px;
            text-align:center;
            display:flex;
            flex-direction:column;
            align-items:center;
            gap:8px;
            justify-content:center;
        }
        .text-link-arrow{
            font-size:15px;
            font-weight:700;
            display:inline-flex;
            align-items:center;
            gap:8px;
            border-bottom:2px solid var(--primary);
            padding-bottom:2px;
            color:var(--ink-strong) !important;
        }
        .text-link-arrow i{transition:transform .25s;color:var(--ink-strong)}
        .text-link-arrow:hover i{transform:translateX(5px)}
        .entry-note{
            margin-top:5px;
            font-family:var(--font-mono);
            font-size:11px;
            color:var(--ink-mute);
            letter-spacing:.03em;
        }

        /* download plus image media section */
        .media-panel{
            background:var(--bg-surface);
            border:1px solid var(--line);
            border-radius:var(--radius-card);
            overflow:hidden;
            display:grid;
            grid-template-columns:1.06fr 1fr;
            align-items:stretch;
        }
        .media-panel .media-holder{
            position:relative;
            min-height:430px;
            background:#141812;
        }
        .media-panel .media-holder img{
            width:100%;
            height:100%;
            object-fit:cover;
            position:absolute;
            inset:0;
        }
        .media-holder .media-badge{
            position:absolute;
            left:20px;bottom:20px;
            background:rgba(12,16,11,.85);
            color:#fff;
            font-family:var(--font-mono);
            font-size:12px;
            letter-spacing:.05em;
            padding:8px 14px;
            border-radius:2px;
            backdrop-filter:blur(6px);
            border-left:3px solid var(--primary);
        }
        .media-content{padding:50px}
        .media-content h2{
            font-size:28px;
            line-height:1.25;
            font-weight:800;
            margin:0 0 22px;
            letter-spacing:-.02em;
        }
        .check-list{margin:0}
        .check-list li{
            display:flex;
            gap:14px;
            align-items:flex-start;
            padding:13px 0;
            border-bottom:1px dashed var(--line);
            color:var(--ink-soft);
        }
        .check-list li:last-child{border-bottom:0}
        .check-list .check-mark{
            flex:0 0 24px;
            width:24px;
            height:24px;
            margin-top:2px;
            border-radius:50%;
            border:1.5px solid var(--primary);
            background:rgba(198,241,62,.08);
            color:var(--bg-dark);
            display:flex;
            align-items:center;
            justify-content:center;
            font-size:10px;
        }
        .check-list strong{
            display:block;
            font-weight:700;
            font-size:15px;
            color:var(--ink-strong);
        }
        .check-list small{
            font-size:13px;
            color:var(--ink-soft);
            line-height:1.55;
            display:block;
            margin-top:3px;
        }

        /* process roadmap */
        .roadmap-section{
            background:var(--bg-dark);
            color:#F4F2EC;
            padding:110px 0 100px;
        }
        .roadmap-section .section-kicker{color:rgba(255,255,255,.68)}
        .roadmap-section .section-kicker::before{background:var(--primary)}
        .roadmap-section .section-title{color:#fff}
        .roadmap-section .section-desc{color:rgba(255,255,255,.7)}
        .roadmap-grid{
            display:grid;
            grid-template-columns:repeat(4,1fr);
            gap:0;
            margin-top:58px;
            position:relative;
        }
        .roadmap-grid::before{
            content:"";
            position:absolute;
            top:27px;
            left:30px;
            right:30px;
            height:2px;
            border-top:2px dashed rgba(255,255,255,.24);
        }
        .roadmap-step{
            position:relative;
            padding-right:28px;
        }
        .roadmap-step .step-node{
            width:56px;
            height:56px;
            border-radius:50%;
            border:2px solid var(--primary);
            background:var(--bg-dark);
            display:flex;
            align-items:center;
            justify-content:center;
            font-family:var(--font-mono);
            font-weight:900;
            font-size:14px;
            color:var(--primary);
            position:relative;
            margin-bottom:24px;
        }
        .roadmap-step .step-no{
            position:absolute;
            top:-6px;
            right:-4px;
            width:20px;
            height:20px;
            border-radius:50%;
            background:var(--accent);
            color:#fff;
            font-size:9px;
            display:flex;
            align-items:center;
            justify-content:center;
            font-weight:800;
        }
        .roadmap-step h3{font-size:18px;font-weight:800;margin:0 0 10px;color:#fff}
        .roadmap-step p{
            font-size:14px;
            line-height:1.75;
            color:rgba(255,255,255,.7);
            margin:0;
        }
        .roadmap-step .step-tip{
            display:inline-block;
            font-size:12px;
            font-family:var(--font-mono);
            margin-top:14px;
            padding:4px 10px;
            border-radius:999px;
            background:rgba(198,241,62,.12);
            color:var(--primary);
        }

        /* FAQ */
        .faq-area{padding:100px 0 70px}
        .faq-layout{
            display:grid;
            grid-template-columns:.75fr 1.6fr;
            gap:60px;
            align-items:start;
        }
        .faq-left .anchor-list{
            margin-top:28px;
            padding:0;
            border-top:1px solid var(--line);
        }
        .faq-left .anchor-list li{
            border-bottom:1px solid var(--line);
        }
        .faq-left .anchor-list a{
            display:flex;
            justify-content:space-between;
            align-items:center;
            color:var(--ink-soft);
            padding:13px 2px;
            font-size:15px;
            transition:color .3s,padding-left .3s;
        }
        .faq-left .anchor-list a:hover{color:var(--ink-strong);padding-left:8px}
        .faq-left .anchor-list i{
            color:var(--primary);
            font-size:11px;
        }
        .faq-acc{
            border-top:1px solid var(--line);
        }
        .faq-item{
            background:transparent;
            border:0;
            border-bottom:1px solid var(--line);
            border-radius:0 !important;
            margin-bottom:0;
        }
        .faq-item .accordion-button{
            background:transparent;
            border:0;
            padding:22px 0 20px;
            font-size:19px;
            font-weight:700;
            color:var(--ink-strong);
            letter-spacing:-.01em;
            box-shadow:none !important;
            display:flex;
            justify-content:flex-start;
            gap:18px;
        }
        .faq-item .accordion-button .qicon{
            color:var(--primary);
            font-family:var(--font-mono);
            font-size:13px;
            font-weight:900;
            border:1.5px solid var(--primary);
            border-radius:50%;
            width:30px;
            height:30px;
            flex:0 0 30px;
            display:inline-flex;
            align-items:center;
            justify-content:center;
            background:rgba(198,241,62,.04);
        }
        .faq-item .accordion-button:not(.collapsed){
            background:transparent;
            color:var(--ink-strong);
            font-weight:800;
        }
        .faq-item .accordion-button:after{
            display:none;
        }
        .accordion-button .arrow-indicator{
            margin-left:auto;
            font-size:14px;
            color:var(--ink-soft);
            transition:transform .3s;
            flex:0 0 auto;
        }
        .faq-item .accordion-button:not(.collapsed) .arrow-indicator{
            transform:rotate(45deg);
            color:var(--ink-strong);
        }
        .faq-item .accordion-body{
            padding:0 0 30px 48px;
            color:var(--ink-soft);
            line-height:1.85;
            font-size:15px;
            background:transparent;
            border-top:0;
        }
        .faq-item .accordion-body code{
            font-family:var(--font-mono);
            font-size:.92em;
            background:rgba(198,241,62,.18);
            color:#1F241D;
            padding:2px 5px;
            border-radius:2px;
        }

        /* notice strip */
        .notice-strip{
            border:1px solid var(--line);
            border-left:4px solid var(--primary);
            background:rgba(255,255,255,.7);
            padding:30px 34px;
            margin-bottom:40px;
            display:grid;
            grid-template-columns:auto 1fr;
            gap:22px;
            border-radius:2px;
        }
        .notice-icon{
            width:46px;height:46px;
            background:var(--bg-dark);
            border-radius:3px;
            display:flex;
            align-items:center;
            justify-content:center;
            color:var(--primary);
            font-size:18px;
        }
        .notice-strip h3{font-size:17px;font-weight:800;margin:0 0 8px}
        .notice-strip p{font-size:14px;color:var(--ink-soft);margin:0;line-height:1.8}

        /* before footer CTA */
        .final-cta{
            padding:0 0 100px;
        }
        .final-cta-panel{
            background:var(--bg-dark);
            border-radius:4px;
            padding:64px 70px;
            display:grid;
            grid-template-columns:1.7fr auto;
            align-items:center;
            gap:40px;
            color:#fff;
            position:relative;
            overflow:hidden;
        }
        .final-cta-panel::before{
            content:"";
            position:absolute;
            right:-90px;top:-90px;
            width:260px;height:260px;
            border-radius:50%;
            background:radial-gradient(circle,rgba(198,241,62,.2),transparent 65%);
            pointer-events:none;
        }
        .final-cta-panel .cta-kicker{
            font-family:var(--font-mono);
            font-size:12px;
            letter-spacing:.15em;
            color:var(--primary);
            margin-bottom:14px;
            display:block;
        }
        .final-cta-panel h2{
            font-size:clamp(26px,2.5vw,38px);
            font-weight:900;
            letter-spacing:-.02em;
            color:#fff;
            margin:0 0 12px;
        }
        .final-cta-panel p{
            color:rgba(255,255,255,.72);
            font-size:15px;
            line-height:1.85;
            margin:0;
            max-width:740px;
        }
        .final-cta-panel .cta-actions{
            display:flex;
            flex-wrap:wrap;
            gap:12px;
            position:relative;z-index:2;
        }

        /* footer */
        .site-footer{
            background:var(--bg-dark);
            color:rgba(255,255,255,.78);
            padding:80px 0 0;
            font-size:14px;
        }
        .footer-main{padding-bottom:30px}
        .footer-main h4{
            color:#fff;
            font-size:15px;
            font-weight:800;
            letter-spacing:.04em;
            margin-bottom:18px;
            padding-bottom:10px;
            border-bottom:1px solid var(--line-dark);
        }
        .brand-logo-footer{
            display:block;
            font-family:var(--font-mono);
            font-size:24px;
            font-weight:900;
            color:#fff;
            line-height:1;
            letter-spacing:-.03em;
        }
        .brand-logo-footer small{
            display:block;
            font-family:inherit;
            font-size:12px;
            color:var(--primary);
            letter-spacing:.1em;
            margin-top:7px;
            font-weight:600;
        }
        .footer-desc{
            color:rgba(255,255,255,.58);
            margin:18px 0 22px;
            font-size:14px;
            line-height:1.8;
            max-width:360px;
        }
        .footer-keywords{
            display:flex;
            flex-wrap:wrap;
            gap:8px;
        }
        .footer-keywords a{
            display:inline-block;
            font-size:12px;
            color:rgba(255,255,255,.7);
            border:1px solid rgba(255,255,255,.16);
            border-radius:999px;
            padding:4px 12px;
            transition:border-color .3s,color .3s,background .3s;
        }
        .footer-keywords a:hover{
            color:var(--bg-dark);
            background:var(--primary);
            border-color:var(--primary);
        }
        .footer-links{padding:0;margin:0;list-style:none}
        .footer-links li{margin-bottom:12px}
        .footer-links a{
            color:rgba(255,255,255,.7);
            font-size:14px;
            position:relative;
            transition:color .3s,padding-left .3s;
        }
        .footer-links a:hover{
            color:#fff;
            padding-left:5px;
        }
        .footer-contact li{
            color:rgba(255,255,255,.58);
            line-height:1.7;
            margin-bottom:12px;
        }
        .footer-contact i{
            color:var(--primary);
            width:20px;
            font-size:14px;
        }
        .footer-bottom{
            border-top:1px solid var(--line-dark);
            padding:24px 0;
            font-size:13px;
            color:rgba(255,255,255,.45);
        }
        .footer-bottom-inner{
            display:flex;
            align-items:center;
            justify-content:space-between;
            gap:12px 30px;
            flex-wrap:wrap;
        }
        .footer-bottom a{
            color:rgba(255,255,255,.55);
        }
        .footer-bottom a:hover{color:#fff}

        /* responsive */
        @media (max-width:1200px){
            .media-content{padding:38px}
            .final-cta-panel{grid-template-columns:1fr;padding:52px}
        }
        @media (max-width:991.98px){
            .header-nav{
                position:fixed;
                top:0;right:-340px;
                width:min(330px,85vw);
                height:100vh;
                height:100dvh;
                background:#FBFAF6;
                z-index:1090;
                box-shadow:0 0 50px rgba(12,16,11,.15);
                flex-direction:column;
                align-items:flex-start;
                justify-content:flex-start;
                padding:110px 28px 40px 32px;
                transition:right .4s cubic-bezier(.22,.8,.24,1);
                display:flex;
            }
            .header-nav.open{right:0}
            .main-menu{
                flex-direction:column;
                align-items:flex-start;
                gap:4px;
                width:100%;
                margin-bottom:30px;
            }
            .main-menu li{width:100%}
            .main-menu a{
                display:block;
                font-size:19px;
                font-weight:600;
                padding:12px 0;
                border-bottom:1px solid #EEEAE1;
            }
            .main-menu a.active{color:var(--ink-strong);font-weight:800}
            .header-cta{
                position:absolute;
                bottom:36px;
                left:28px;
                right:28px;
                margin-left:0;
            }
            .header-cta .btn{width:100%}
            .hamburger{
                display:flex;
                position:relative;
                z-index:1100;
            }
            .section{padding:76px 0}
            .section-heading{flex-direction:column;gap:20px;margin-bottom:36px}
            .faq-layout{grid-template-columns:1fr;gap:40px}
            .faq-left .anchor-list{display:flex;flex-wrap:wrap;gap:10px;border-top:0;margin-top:18px}
            .faq-left .anchor-list li{border:0;margin:0}
            .faq-left .anchor-list a{
                border:1px solid var(--line);
                padding:6px 14px;
                border-radius:999px;
                font-size:13px;
                gap:8px;
            }
            .faq-left .anchor-list a:hover{padding-left:14px}
            .entry-row{grid-template-columns:64px 1fr;padding:28px 24px;gap:22px}
            .entry-action{grid-column:2;align-items:flex-start;width:auto;text-align:left;justify-content:flex-start}
            .media-panel{grid-template-columns:1fr}
            .media-holder{min-height:300px}
            .media-content{padding:36px 30px}
            .roadmap-grid{grid-template-columns:repeat(2,1fr);gap:44px 0}
            .roadmap-grid::before{display:none}
        }
        @media (max-width:767.98px){
            .container{max-width:100%;padding-left:16px;padding-right:16px}
            body{font-size:15px}
            .site-header{height:68px}
            .header-inner{height:68px;gap:12px}
            .logo-main{font-size:20px}
            .logo-sub{font-size:10px}
            .logo-badge{font-size:10px;padding:2px 6px}
            .main-menu a{font-size:17px}
            .page-banner{min-height:0;padding:130px 0 54px}
            .page-banner .banner-meta-bar{gap:8px;}
            .page-banner .banner-meta-bar div{padding:4px 9px;font-size:11px}
            .banner-meta-bar div i{font-size:10px}
            .page-banner h1{font-size:32px}
            .section-title{font-size:26px}
            .section-desc{font-size:15px}
            .entry-row{grid-template-columns:1fr;padding:26px 22px;gap:18px}
            .entry-icon{width:58px;height:58px}
            .entry-content h3{font-size:18px}
            .entry-props .prop-item{white-space:normal}
            .entry-action{grid-column:1;width:100%;flex-direction:row;justify-content:space-between;align-items:center;border-top:1px dashed var(--line);padding-top:16px}
            .entry-note{margin-top:0}
            .roadmap-section{padding:72px 0 64px}
            .roadmap-grid{grid-template-columns:1fr;gap:42px}
            .roadmap-grid::before{display:none}
            .faq-area{padding:70px 0 40px}
            .faq-item .accordion-button{font-size:17px;gap:12px;padding-top:18px;padding-bottom:16px}
            .faq-item .accordion-button .qicon{width:26px;height:26px;flex-basis:26px}
            .faq-item .accordion-body{padding-left:38px;padding-bottom:22px}
            .notice-strip{grid-template-columns:1fr;padding:26px;gap:16px}
            .notice-icon{display:none}
            .final-cta{padding-bottom:70px}
            .final-cta-panel{grid-template-columns:1fr;padding:40px 24px}
            .final-cta-panel .cta-actions{flex-direction:column}
            .final-cta-panel .btn{width:100%}
            .footer-main{padding-bottom:50px}
            .footer-bottom-inner{flex-direction:column;align-items:flex-start;text-align:left}
        }
        @media (max-width:420px){
            .brand-logo-footer small{letter-spacing:.02em}
            .header-cta .btn-sm-custom{padding:0 14px;font-size:12px}
            .logo-sub{display:none}
            .logo-line .logo-badge{margin-left:0}
        }
        @media (prefers-reduced-motion:reduce){
            *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
        }

/* roulang page: category2 */
/* ============================================================
           设计变量
        ============================================================ */
        :root {
            --bg-page: #F4F2EC;
            --bg-surface: #FFFFFF;
            --bg-dark: #0C100B;
            --ink-strong: #17191A;
            --ink-soft: #5F645F;
            --ink-mute: #9A9E97;
            --primary: #C6F13E;
            --primary-hover: #D3F85D;
            --accent: #FF4B2E;
            --line: #E3DFD6;
            --line-dark: rgba(255, 255, 255, 0.14);
            --radius: 4px;
            --radius-sm: 2px;
            --radius-lg: 6px;
            --shadow-float: 0 12px 30px rgba(20, 18, 10, 0.08);
            --font-body: -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-mono: "SF Mono", "JetBrains Mono", Consolas, monospace;
            --header-h: 76px;
        }

        /* ============================================================
           基础 Reset
        ============================================================ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-body);
            color: var(--ink-strong);
            background: var(--bg-page);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        a:hover {
            color: inherit;
        }
        img {
            max-width: 100%;
            height: auto;
            object-fit: cover;
        }
        button,
        input {
            font-family: inherit;
        }
        ul,
        ol {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        p {
            margin: 0;
        }

        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ============================================================
           通用按钮
        ============================================================ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 50px;
            padding: 0 24px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 3px;
            border: 1px solid transparent;
            transition: all .25s ease;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 2px solid var(--ink-strong);
            outline-offset: 3px;
            box-shadow: none;
        }
        .btn-primary-custom {
            background: var(--bg-dark);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 20px;
            font-size: 15px;
            font-weight: 500;
            border-radius: 3px;
            transition: all .25s ease;
        }
        .btn-primary-custom:hover {
            background: var(--primary);
            color: var(--bg-dark);
            transform: translateY(-2px);
        }
        .btn-primary-custom .icon-move {
            transition: transform .25s ease;
        }
        .btn-primary-custom:hover .icon-move {
            transform: translateX(4px);
        }
        .btn-dark-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            border: 1px solid var(--line);
            background: transparent;
            color: var(--ink-strong);
            padding: 0 20px;
            font-size: 15px;
            font-weight: 500;
            border-radius: 3px;
            transition: all .25s ease;
        }
        .btn-dark-ghost:hover {
            border-color: #17191A;
            background: #17191A;
            color: #fff;
        }
        .btn-sm-custom {
            height: 40px;
            padding: 0 18px;
            font-size: 14px;
        }

        /* ============================================================
           Header
        ============================================================ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            height: var(--header-h);
            background: rgba(244, 242, 236, 0.8);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid transparent;
            transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.92);
            border-bottom: 1px solid var(--line);
            box-shadow: 0 6px 24px rgba(40, 32, 10, 0.05);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            gap: 24px;
        }
        .site-logo {
            display: inline-flex;
            align-items: center;
            flex-shrink: 0;
        }
        .site-logo .logo-line {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .site-logo .logo-main {
            font-size: 22px;
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--ink-strong);
        }
        .logo-badge {
            background: var(--primary);
            color: #17191A;
            font-size: 12px;
            height: 22px;
            line-height: 22px;
            padding: 0 8px;
            border-radius: 99px;
            font-weight: 700;
            letter-spacing: .02em;
            white-space: nowrap;
        }
        .logo-sub {
            display: block;
            font-size: 12px;
            letter-spacing: 0.06em;
            color: var(--ink-mute);
            margin-top: 3px;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 24px;
            flex: 1;
            justify-content: flex-end;
        }
        .main-menu {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .main-menu a {
            display: inline-flex;
            align-items: center;
            padding: 10px 15px;
            color: var(--ink-soft);
            font-size: 14px;
            font-weight: 500;
            position: relative;
            border-radius: 3px;
            transition: color .25s ease;
        }
        .main-menu a::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 15px;
            right: 15px;
            height: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform .3s ease;
        }
        .main-menu a:hover {
            color: var(--ink-strong);
        }
        .main-menu a:hover::after {
            transform: scaleX(1);
        }
        .main-menu a.active {
            color: var(--ink-strong);
            font-weight: 700;
        }
        .main-menu a.active::after {
            transform: scaleX(1);
            background: var(--primary);
            height: 3px;
        }
        .header-cta {
            margin-left: auto;
        }
        .hamburger {
            display: none;
            width: 44px;
            height: 44px;
            border: 1px solid transparent;
            background: transparent;
            border-radius: 6px;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            padding: 0;
            cursor: pointer;
        }
        .hamburger span {
            width: 20px;
            height: 2px;
            background: var(--ink-strong);
            transition: all .3s ease;
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ============================================================
           内页 Hero 横幅
        ============================================================ */
        .category-hero {
            position: relative;
            background: var(--bg-dark);
            padding: calc(var(--header-h) + 68px) 0 76px;
            margin-top: 0;
            overflow: hidden;
            color: #fff;
        }
        .category-hero .hero-bg {
            position: absolute;
            inset: 0;
            background-image: linear-gradient(113deg, rgba(12, 16, 11, 0.94) 0%, rgba(12, 16, 11, 0.72) 100%), url('/assets/images/backpic/back-1.webp');
            background-position: center;
            background-size: cover;
            z-index: 0;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
        }
        .category-hero .breadcrumb {
            display: flex;
            gap: 8px;
            color: rgba(255, 255, 255, 0.55);
            font-size: 13px;
            margin-bottom: 22px;
            letter-spacing: .03em;
        }
        .category-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
            transition: color .2s;
        }
        .category-hero .breadcrumb a:hover {
            color: var(--primary);
        }
        .category-hero h1 {
            font-size: clamp(34px, 4.6vw, 58px);
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.12;
            margin-bottom: 16px;
            color: #fff;
            max-width: 880px;
        }
        .category-hero .hero-lead {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.78);
            max-width: 650px;
            margin-bottom: 26px;
        }
        .category-hero .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #17191A;
            font-size: 12px;
            font-weight: 700;
            padding: 6px 12px;
            border-radius: 99px;
            margin-bottom: 20px;
            letter-spacing: .05em;
        }
        .category-hero .hero-tag::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--bg-dark);
            display: inline-block;
        }

        /* ============================================================
           区块通用
        ============================================================ */
        .section {
            padding: 100px 0;
        }
        .section.pad-sm {
            padding: 60px 0;
        }
        .section-head {
            margin-bottom: 42px;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .06em;
            color: var(--ink-strong);
        }
        .section-label .label-dot {
            width: 8px;
            height: 8px;
            background: var(--primary);
            display: inline-block;
            border-radius: 2px;
        }
        .section-title {
            font-weight: 900;
            font-size: clamp(28px, 3vw, 42px);
            line-height: 1.15;
            letter-spacing: -0.015em;
            margin: 18px 0 0;
        }
        .section-title.light {
            color: #fff;
        }
        .section-desc {
            margin-top: 14px;
            max-width: 600px;
            color: var(--ink-soft);
            font-size: 16px;
            line-height: 1.8;
        }

        .line-divider {
            border: 0;
            border-top: 1px solid var(--line);
            margin: 0;
        }

        /* ============================================================
           功能分栏区(特色)
        ============================================================ */
        .feature-layout {
            display: flex;
            flex-wrap: wrap;
            gap: 60px;
        }
        .feature-media {
            flex: 0 0 58%;
            max-width: 58%;
        }
        .feature-info {
            flex: 1;
            min-width: 320px;
        }
        .feature-media .media-main {
            border-radius: 2px;
            overflow: hidden;
            margin-bottom: 28px;
        }
        .feature-media .media-main img {
            width: 100%;
            display: block;
            min-height: 300px;
            object-fit: cover;
        }
        .media-highlight {
            background: var(--bg-surface);
            border: 1px solid var(--line);
            border-left: 4px solid var(--primary);
            padding: 26px 30px;
            border-radius: 0 var(--radius) var(--radius) 0;
            font-size: 15px;
            line-height: 1.9;
            color: var(--ink-soft);
        }
        .media-highlight strong {
            color: var(--ink-strong);
        }

        .feature-toc {
            background: var(--bg-surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 35px 30px 20px;
            height: 100%;
        }
        .feature-toc .ft-title {
            font-size: 15px;
            font-weight: 700;
            letter-spacing: .03em;
            margin-bottom: 10px;
            padding-bottom: 15px;
            border-bottom: 1px solid var(--line);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .feature-toc .ft-title .mono {
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--ink-mute);
        }
        .ft-list {
            display: flex;
            flex-direction: column;
        }
        .ft-item {
            display: flex;
            gap: 18px;
            padding: 22px 0;
            border-bottom: 1px dashed var(--line);
            align-items: flex-start;
        }
        .ft-item:last-child {
            border-bottom: 0;
        }
        .ft-item .ft-index {
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 14px;
            background: var(--primary);
            color: var(--bg-dark);
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 2px;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .ft-item .ft-body {
            font-size: 15px;
        }
        .ft-item .ft-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink-strong);
            margin: 0 0 6px;
        }
        .ft-item .ft-body p {
            color: var(--ink-soft);
            line-height: 1.7;
            font-size: 14.5px;
        }

        /* ============================================================
           双图内容横条
        ============================================================ */
        .strip-area {
            background: var(--bg-surface);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }
        .strip-card {
            display: flex;
            height: 100%;
            gap: 34px;
            padding: 34px;
            border: 1px solid var(--line);
            border-radius: 4px;
            background: var(--bg-page);
            flex-direction: column;
        }
        .strip-card .strip-img {
            border-radius: 3px;
            overflow: hidden;
        }
        .strip-card .strip-img img {
            width: 100%;
            height: 225px;
            object-fit: cover;
            display: block;
        }
        .strip-card .strip-cat {
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: .04em;
        }
        .strip-card h3 {
            font-size: 23px;
            font-weight: 800;
            color: var(--ink-strong);
            margin: 8px 0 10px;
            letter-spacing: -0.01em;
        }
        .strip-card p {
            color: var(--ink-soft);
            font-size: 15px;
            line-height: 1.8;
            margin: 0;
        }

        /* ============================================================
           版本对比
        ============================================================ */
        .version-compare-wrap {
            background: var(--bg-page);
        }
        .version-card {
            background: var(--bg-surface);
            border-left: 1px solid var(--line);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            border-right: 1px solid var(--line);
            border-radius: 4px;
            padding: 40px 38px;
            height: 100%;
            transition: box-shadow .3s ease;
            position: relative;
        }
        .version-card.feature-dark {
            background: var(--bg-dark);
            border: 1px solid var(--bg-dark);
            color: #fff;
        }
        .version-card.feature-dark::before {
            content: "优先参考";
            position: absolute;
            right: 30px;
            top: -1px;
            transform: translateY(-50%);
            background: var(--primary);
            color: var(--bg-dark);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 99px;
            letter-spacing: .08em;
        }
        .version-card h3 {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 10px;
            display: flex;
            gap: 10px;
            align-items: center;
        }
        .version-card .version-icon {
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 4px;
            background: var(--primary);
            color: var(--bg-dark);
            font-size: 17px;
            margin-right: 8px;
        }
        .version-card.feature-dark .version-icon {
            background: var(--primary);
        }
        .version-card .vc-desc {
            color: var(--ink-soft);
            background: transparent;
            font-size: 14px;
            margin-bottom: 24px;
            min-height: 72px;
        }
        .version-card.feature-dark .vc-desc {
            color: rgba(255, 255, 255, 0.66);
        }
        .vc-list {
            border-top: 1px solid var(--line);
            padding-top: 18px;
            margin-bottom: 26px;
        }
        .version-card.feature-dark .vc-list {
            border-color: rgba(255, 255, 255, 0.14);
        }
        .vc-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            color: var(--ink-soft);
            font-size: 15px;
            padding: 7px 0;
        }
        .vc-list li i {
            color: var(--primary);
            font-size: 15px;
            margin-top: 5px;
        }
        .version-card.feature-dark .vc-list li {
            color: rgba(255, 255, 255, 0.76);
        }
        .vc-meta {
            font-family: var(--font-mono);
            font-size: 12px;
            letter-spacing: .03em;
            margin-bottom: 18px;
            color: var(--ink-mute);
        }
        .version-card.feature-dark .vc-meta {
            color: rgba(255, 255, 255, 0.5);
        }

        /* ============================================================
           数据统计区
        ============================================================ */
        .stats-band {
            background: var(--bg-surface);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 48px 32px;
        }
        .stat-item {
            padding: 10px 16px;
            position: relative;
        }
        .stat-item .stat-num {
            font-family: var(--font-mono);
            font-weight: 800;
            font-size: 62px;
            line-height: 1;
            color: var(--ink-strong);
            letter-spacing: -0.04em;
            display: block;
            margin-bottom: 10px;
        }
        .stat-item .stat-num em {
            color: var(--primary);
            font-style: normal;
        }
        .stat-item .stat-label {
            font-size: 15px;
            color: var(--ink-soft);
            font-weight: 500;
        }
        .stat-item .stat-desc {
            font-size: 13px;
            color: var(--ink-mute);
            margin-top: 6px;
        }
        .stat-item::before {
            content: "";
            width: 14px;
            height: 3px;
            background: var(--ink-strong);
            display: block;
            margin-bottom: 18px;
        }

        /* ============================================================
           CTA 深色面板
        ============================================================ */
        .cta-panel {
            background: var(--bg-dark);
            border-radius: 4px;
            padding: 68px 70px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-panel::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(110deg, rgba(198, 241, 62, .08) 0%, rgba(255, 255, 255, 0) 35%);
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 36px;
            flex-wrap: wrap;
        }
        .cta-inner h2 {
            color: #fff;
            font-size: clamp(24px, 2.6vw, 36px);
            font-weight: 800;
            margin-bottom: 8px;
            line-height: 1.2;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, 0.66);
            max-width: 560px;
            font-size: 15.5px;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
        }
        .btn-cta-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #17191A;
            font-weight: 700;
            height: 52px;
            padding: 0 32px;
            border-radius: 3px;
            border: 1px solid var(--primary);
            transition: all .25s ease;
            gap: 10px;
            font-size: 15px;
        }
        .btn-cta-main:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            transform: translateY(-1px);
            color: #17191A;
        }
        .btn-cta-main i {
            transition: transform .25s;
        }
        .btn-cta-main:hover i {
            transform: translateX(4px);
        }

        /* ============================================================
           FAQ 区块
        ============================================================ */
        .faq-layout {
            display: grid;
            grid-template-columns: minmax(240px, 0.8fr) 1.6fr;
            gap: 64px;
        }
        .faq-heading .faq-lead {
            color: var(--ink-soft);
            line-height: 1.8;
            margin-top: 14px;
        }
        .faq-list {
            border-bottom: 1px solid var(--line);
        }
        .faq-item {
            border-top: 1px solid var(--line);
            border-radius: 0;
            background: transparent;
            cursor: pointer;
        }
        .faq-item .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            font-weight: 600;
            font-size: 16px;
            color: var(--ink-strong);
            background: transparent;
            padding: 22px 0;
            cursor: pointer;
            min-height: auto;
            line-height: 1.5;
        }
        .faq-item .faq-q i {
            transition: transform .3s;
            color: var(--ink-soft);
            font-size: 14px;
            flex-shrink: 0;
        }
        .faq-item .faq-q[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            padding: 0 42px 20px 0;
            color: var(--ink-soft);
            font-size: 15px;
            line-height: 1.9;
            background: transparent;
        }

        /* ============================================================
           Footer
        ============================================================ */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 76px 0 40px;
            margin-top: 0;
        }
        .site-footer .footer-main {
            margin-bottom: 46px;
        }
        .brand-logo-footer {
            display: block;
            font-size: 33px;
            font-weight: 900;
            color: #FFFFFF;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .brand-logo-footer small {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            font-weight: 500;
            margin-top: 8px;
        }
        .footer-desc {
            margin: 18px 0 20px;
            color: rgba(255, 255, 255, 0.58);
            font-size: 14px;
            line-height: 1.7;
            max-width: 370px;
        }
        .footer-keywords {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .footer-keywords a {
            display: inline-flex;
            align-items: center;
            height: 30px;
            padding: 0 14px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 99px;
            font-size: 12.5px;
            color: rgba(255, 255, 255, 0.65);
            transition: border-color .2s ease, color .2s ease;
        }
        .footer-keywords a:hover {
            border-color: var(--primary);
            color: #fff;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 24px;
            margin-top: 8px;
            letter-spacing: .03em;
            position: relative;
            padding-bottom: 13px;
        }
        .footer-title::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            height: 3px;
            width: 30px;
            background: var(--primary);
            border-radius: 1px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            padding: 0;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            transition: all .2s;
        }
        .footer-links a:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 4px;
            text-decoration-color: var(--primary);
        }
        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
        }
        .footer-contact li i {
            color: var(--primary);
            width: 16px;
            text-align: center;
            margin-top: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--line-dark);
            padding-top: 28px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            color: rgba(255, 255, 255, 0.36);
            font-size: 13px;
        }

        /* ============================================================
           移动端响应式
        ============================================================ */
        @media (max-width: 1200px) {
            .feature-layout {
                gap: 40px;
            }
        }

        @media (max-width: 991.98px) {
            .section {
                padding: 80px 0;
            }
            .site-header {
                height: 70px;
            }
            .header-inner {
                height: 70px;
            }
            .header-nav {
                position: fixed;
                inset: 0 0 0 auto;
                width: min(420px, 86vw);
                background: var(--bg-page);
                height: 100vh;
                height: 100dvh;
                flex-direction: column;
                align-items: flex-start;
                justify-content: flex-start;
                padding: 90px 34px 30px;
                gap: 36px;
                transform: translateX(100%);
                transition: transform .4s ease;
                z-index: 1040;
                box-shadow: -20px 0 50px rgba(12, 16, 11, 0.18);
                overflow-y: auto;
            }
            .header-nav.show {
                transform: translateX(0);
            }
            .main-menu {
                flex-direction: column;
                width: 100%;
                gap: 8px;
                align-items: stretch;
            }
            .main-menu a,
            .main-menu a.active {
                padding: 14px 4px;
                font-size: 18px;
                border-bottom: 1px solid var(--line);
                color: var(--ink-strong);
                font-weight: 500;
                display: flex;
            }
            .main-menu a::after {
                display: none;
            }
            .main-menu a.active {
                border-left: 4px solid var(--primary);
                padding-left: 12px;
                font-weight: 700;
            }
            .header-cta {
                width: 100%;
                margin-left: 0;
            }
            .header-cta .btn-primary-custom {
                width: 100%;
            }
            .hamburger {
                display: flex;
                position: relative;
                z-index: 1050;
            }
            .hamburger:focus-visible {
                outline: 2px solid var(--ink-strong);
                outline-offset: 2px;
            }
            .faq-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .feature-media {
                flex: 0 0 100%;
                max-width: 100%;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-panel {
                padding: 46px 28px;
            }
            .category-hero {
                padding: 120px 0 60px;
            }
            .category-hero h1 {
                font-size: 38px;
            }
        }

        @media (max-width: 767.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section {
                padding: 58px 0;
            }
            .site-logo .logo-main {
                font-size: 19px;
            }
            .logo-badge {
                font-size: 11px;
                padding: 0 7px;
            }
            .category-hero {
                padding: 110px 0 42px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .category-hero .hero-lead {
                font-size: 15px;
            }
            .strip-card {
                padding: 20px;
            }
            .strip-card .strip-img img {
                height: 180px;
            }
            .section-title {
                font-size: 27px;
            }
            .feature-toc {
                padding: 20px 15px 10px;
            }
            .feature-toc .ft-title {
                align-items: flex-start;
            }
            .ft-item {
                gap: 12px;
            }
            .ft-item .ft-index {
                width: 28px;
                height: 28px;
                font-size: 12px;
            }
            .version-card {
                padding: 28px 20px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stat-item .stat-num {
                font-size: 44px;
            }
            .cta-actions {
                width: 100%;
            }
            .cta-actions .btn-cta-main,
            .cta-actions .btn-dark-ghost {
                width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                justify-content: center;
                text-align: center;
            }
            .site-footer {
                padding: 52px 0 24px;
            }
            .category-hero .breadcrumb {
                font-size: 12px;
                flex-wrap: wrap;
            }
        }

        @media (max-width: 520px) {
            .section-title {
                font-size: 24px;
            }
            .category-hero h1 {
                font-size: 27px;
            }
            .site-logo .site-logo-text {
                font-size: 15px;
            }
            .logo-sub {
                font-size: 11px;
            }
            .media-highlight {
                padding: 18px;
                font-size: 14px;
            }
            .feature-info {
                min-width: 0;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category3 */
:root {
            --bg-page: #F4F2EC;
            --bg-surface: #FFFFFF;
            --bg-dark: #0C100B;
            --ink-strong: #17191A;
            --ink-soft: #5F645F;
            --ink-mute: #9A9E97;
            --primary: #C6F13E;
            --accent: #FF4B2E;
            --line: #E3DFD6;
            --line-dark: rgba(255, 255, 255, 0.14);
            --radius: 3px;
            --shadow: 0 12px 30px rgba(20, 18, 10, 0.08);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg-page);
            color: var(--ink-strong);
            line-height: 1.8;
            font-size: 16px;
            margin: 0;
            padding: 0;
        }

        img {
            max-width: 100%;
            height: auto;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s;
        }

        a:hover {
            color: inherit;
        }

        .container {
            max-width: 1240px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 999;
            background: rgba(244, 242, 236, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(227, 223, 214, 0.6);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 8px 26px rgba(20, 18, 10, 0.07);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 78px;
            flex-wrap: nowrap;
        }

        .site-logo {
            display: inline-flex;
            align-items: center;
            flex-shrink: 0;
            position: relative;
        }

        .site-logo>span {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .logo-line {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .logo-main {
            font-size: 26px;
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--ink-strong);
        }

        .logo-badge {
            font-size: 11px;
            padding: 2px 8px;
            border: 1px solid var(--ink-strong);
            border-radius: 99px;
            font-weight: 600;
            white-space: nowrap;
        }

        .logo-sub {
            font-size: 12px;
            color: var(--ink-soft);
            letter-spacing: 0.03em;
            margin-top: 2px;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .main-menu {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            gap: 8px;
        }

        .main-menu li a {
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            border-radius: 3px;
            position: relative;
            white-space: nowrap;
            color: var(--ink-soft);
            transition: color 0.2s;
        }

        .main-menu li a::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 0;
            height: 2px;
            background: var(--ink-strong);
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.28s ease;
        }

        .main-menu li a:hover {
            color: var(--ink-strong);
        }

        .main-menu li a:hover::after {
            transform: scaleX(1);
        }

        .main-menu li a.active {
            color: var(--ink-strong);
            font-weight: 700;
        }

        .main-menu li a.active::after {
            transform: scaleX(1);
            background: var(--primary);
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: var(--ink-strong);
            color: var(--primary) !important;
            border: 1px solid var(--ink-strong);
            padding: 12px 24px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.2;
            border-radius: 3px;
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .btn-primary-custom:hover {
            background-color: var(--primary);
            color: var(--ink-strong) !important;
            border-color: var(--primary);
            transform: translateY(-1px);
        }

        .btn-sm-custom {
            padding: 8px 18px;
            font-size: 14px;
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            padding: 8px;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--ink-strong);
            border-radius: 2px;
            transition: all 0.3s;
        }

        .help-hero {
            padding-top: 150px;
            padding-bottom: 46px;
            position: relative;
            background: linear-gradient(0deg, rgba(12, 16, 11, 0.12), rgba(12, 16, 11, 0.12)),
                url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            border-bottom: 1px solid var(--line);
        }

        .help-hero .hero-content {
            max-width: 800px;
        }

        .hero-kicker {
            display: inline-block;
            margin-bottom: 14px;
        }

        .hero-kicker span {
            display: inline-flex;
            align-items: center;
            background: var(--primary);
            color: var(--ink-strong);
            font-size: 13px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 99px;
            letter-spacing: 0.03em;
        }

        .help-hero h1 {
            font-size: clamp(34px, 5vw, 60px);
            font-weight: 900;
            line-height: 1.12;
            letter-spacing: -0.025em;
            color: #ffffff;
            margin-top: 8px;
            margin-bottom: 14px;
            text-shadow: 0 2px 14px rgba(0, 0, 0, 0.1);
        }

        .help-hero .lead {
            font-size: 17px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.9);
            max-width: 640px;
            margin-bottom: 0;
            text-shadow: 0 1px 8px rgba(0, 0, 0, 0.3);
        }

        .hero-meta-badge {
            margin-top: 22px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .hero-meta-badge .badge-item {
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.28);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 13px;
            padding: 6px 14px;
            border-radius: 99px;
            font-family: "SF Mono", "JetBrains Mono", Consolas, monospace;
        }

        .section-block {
            padding: 80px 0;
        }

        .section-block.alt-bg {
            background: #fff;
        }

        .section-heading h2 {
            font-size: clamp(28px, 3vw, 36px);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 8px;
            position: relative;
        }

        .section-heading .section-mark {
            display: inline-block;
            width: 28px;
            height: 4px;
            background: var(--primary);
            margin-bottom: 16px;
        }

        .section-heading .sub-text {
            color: var(--ink-soft);
            max-width: 700px;
        }

        .quick-entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 14px;
            margin-top: 30px;
        }

        .quick-entry-item {
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--bg-surface);
            border: 1px solid var(--line);
            border-radius: 4px;
            padding: 16px 16px;
            cursor: pointer;
            transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
        }

        .quick-entry-item:hover {
            border-color: var(--ink-strong);
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }

        .quick-entry-item .q-icon {
            width: 36px;
            height: 36px;
            background: var(--bg-page);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--ink-strong);
            flex-shrink: 0;
            font-weight: 700;
            font-family: "SF Mono", Consolas, monospace;
        }

        .quick-entry-item .q-text {
            font-size: 14px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--ink-strong);
        }

        .help-two-col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 44px;
        }

        .help-column-card {
            border: 1px solid var(--line);
            border-top: 3px solid var(--ink-strong);
            background: var(--bg-surface);
            border-radius: 4px;
            padding: 38px 34px;
        }

        .help-column-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 22px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .help-column-card h3 i {
            color: var(--primary);
            background: var(--ink-strong);
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-size: 12px;
        }

        .accordion-list {
            display: flex;
            flex-direction: column;
        }

        .accordion-item-custom {
            border: 0;
            border-bottom: 1px solid var(--line);
            background: transparent;
            border-radius: 0 !important;
        }

        .accordion-item-custom:first-child {
            border-top: 1px solid var(--line);
        }

        .accordion-button {
            font-size: 15px;
            font-weight: 600;
            background-color: transparent;
            border: 0;
            padding: 18px 32px 18px 4px;
            box-shadow: none;
            color: var(--ink-strong);
            position: relative;
            transition: color 0.2s;
        }

        .accordion-button:not(.collapsed) {
            color: var(--ink-strong);
            background-color: transparent;
            box-shadow: none;
            font-weight: 700;
        }

        .accordion-button:focus {
            box-shadow: none;
            border: 0;
            outline: 2px solid var(--primary);
            outline-offset: -2px;
        }

        .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%2317191A' stroke-width='1.8'%3E%3Cpath d='M8 3v10M3 8h10'/%3E%3C/svg%3E");
            width: 18px;
            height: 18px;
            background-size: contain;
            transition: transform 0.25s;
            right: 0;
            left: auto;
            position: absolute;
        }

        .accordion-button:not(.collapsed)::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%2317191A' stroke-width='1.8'%3E%3Cpath d='M3 8h10'/%3E%3C/svg%3E");
            transform: none;
        }

        .accordion-body {
            padding: 0 0 18px 4px;
            color: var(--ink-soft);
            font-size: 14px;
            line-height: 1.85;
        }

        .tip-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .tip-list li {
            display: flex;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px dashed var(--line);
            font-size: 15px;
            line-height: 1.75;
        }

        .tip-list li:last-child {
            border-bottom: 0;
        }

        .tip-list li .tip-num {
            font-family: "SF Mono", Consolas, monospace;
            font-weight: 700;
            color: var(--accent);
            font-size: 13px;
            padding-top: 3px;
            flex-shrink: 0;
            min-width: 28px;
        }

        .tip-list li .tip-content {
            color: var(--ink-soft);
        }

        .tip-list li .tip-content strong {
            display: block;
            color: var(--ink-strong);
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 2px;
        }

        .notice-banner {
            border: 1px solid var(--line);
            background: var(--bg-page);
            padding: 26px 30px;
            border-radius: 4px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
            font-size: 14px;
            color: var(--ink-soft);
            margin-top: 20px;
        }

        .notice-banner .notice-icon {
            color: var(--ink-strong);
            background: var(--primary);
            min-width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .notice-banner strong {
            color: var(--ink-strong);
            display: block;
            margin-bottom: 4px;
            font-size: 15px;
        }

        .image-figure-block {
            background: var(--bg-surface);
            border: 1px solid var(--line);
            border-radius: 4px;
            overflow: hidden;
            margin: 0 0 16px 0;
        }

        .image-figure-block img {
            display: block;
            width: 100%;
            object-fit: cover;
            aspect-ratio: 16/9;
        }

        .figure-caption-sample {
            padding: 10px 16px;
            font-size: 12px;
            color: var(--ink-mute);
            background: #FAF9F7;
            border-top: 1px solid var(--line);
        }

        .cta-dark-panel {
            background: var(--bg-dark);
            border-radius: 6px;
            padding: 54px 50px;
            position: relative;
            overflow: hidden;
        }

        .cta-dark-panel h2 {
            color: #fff;
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 800;
            margin-bottom: 10px;
        }

        .cta-dark-panel .cta-sub {
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 0;
            font-size: 15px;
            max-width: 600px;
        }

        .cta-dark-panel .btn-primary-custom {
            background: var(--primary);
            border-color: var(--primary);
            color: var(--ink-strong) !important;
            font-weight: 700;
            padding: 14px 32px;
            white-space: nowrap;
            transition: all 0.3s;
        }

        .cta-dark-panel .btn-primary-custom:hover {
            background: #DDFA68;
            border-color: #DDFA68;
            transform: translateY(-3px);
            color: var(--ink-strong) !important;
        }

        .cta-dark-panel .btn-outline-light-custom {
            border: 1px solid rgba(255, 255, 255, 0.45);
            color: #fff !important;
            border-radius: 3px;
            padding: 14px 30px;
            font-weight: 600;
            transition: background 0.25s, border-color 0.25s;
            background: transparent;
        }

        .cta-dark-panel .btn-outline-light-custom:hover {
            background: #fff;
            border-color: #fff;
            color: var(--ink-strong) !important;
        }

        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding-top: 56px;
            font-size: 14px;
        }

        .site-footer .brand-logo-footer {
            color: #fff;
            font-size: 24px;
            font-weight: 900;
            letter-spacing: -0.02em;
        }

        .site-footer .brand-logo-footer small {
            display: block;
            font-size: 13px;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
            letter-spacing: 0.02em;
        }

        .site-footer .footer-desc {
            margin-top: 16px;
            max-width: 340px;
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            line-height: 1.8;
        }

        .footer-keywords {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 20px;
        }

        .footer-keywords a {
            display: inline-block;
            padding: 5px 12px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: rgba(255, 255, 255, 0.8);
            font-size: 12px;
            border-radius: 99px;
            transition: all 0.22s;
        }

        .footer-keywords a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.35);
        }

        .footer-title {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-title::after {
            content: "";
            display: block;
            width: 22px;
            height: 3px;
            background: var(--primary);
            margin-top: 8px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 11px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            background: transparent;
            margin: 0;
            padding: 0;
            font-size: 14px;
            transition: color 0.2s, padding-left 0.22s;
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
            text-decoration: underline;
            text-decoration-color: var(--primary);
            text-underline-offset: 4px;
        }

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            font-family: "SF Mono", Consolas, monospace;
        }

        .footer-contact li i {
            margin-top: 5px;
            width: 14px;
            flex-shrink: 0;
        }

        .footer-bottom-wrap {
            border-top: 1px solid var(--line-dark);
            margin-top: 42px;
            padding: 18px 0 22px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom-legal span {
            margin-left: 18px;
        }

        .site-footer .col-lg-2 .footer-links,
        .site-footer .col-lg-3 .footer-links {
            margin-left: 0;
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }

        @media (max-width: 991px) {
            .help-hero {
                padding-top: 130px;
            }

            .section-block {
                padding: 64px 0;
            }

            .help-two-col {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .quick-entry-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 767px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }

            .header-inner {
                height: 72px;
            }

            .site-logo .logo-main {
                font-size: 21px;
            }

            .logo-badge {
                font-size: 10px;
            }

            .header-nav {
                display: none;
                position: fixed;
                top: 0;
                right: 0;
                bottom: 0;
                width: min(320px, 85vw);
                background: #FCFBF8;
                flex-direction: column;
                align-items: stretch;
                padding: 90px 30px 30px;
                box-shadow: -18px 0 40px rgba(20, 18, 10, 0.14);
                z-index: 1050;
                gap: 20px;
                overflow-y: auto;
            }

            .header-nav.open {
                display: flex;
            }

            .main-menu {
                flex-direction: column;
                gap: 4px;
                border-bottom: 1px solid var(--line);
                padding-bottom: 20px;
            }

            .main-menu li a {
                display: block;
                padding: 13px 12px;
                font-size: 16px;
                border-radius: 4px;
            }

            .main-menu li a.active {
                background: var(--primary);
            }

            .main-menu li a.active::after {
                display: none;
            }

            .main-menu li a::after {
                height: 3px;
                left: 4px;
                right: 4px;
                bottom: 4px;
            }

            .header-cta {
                display: flex;
                flex-direction: column;
                gap: 12px;
            }

            .header-cta .btn-primary-custom {
                justify-content: center;
                background-color: var(--ink-strong);
                color: #fff;
            }

            .hamburger {
                display: flex;
                position: relative;
                z-index: 1100;
            }

            .hamburger.open span:nth-child(1) {
                transform: translateY(7px) rotate(45deg);
            }

            .hamburger.open span:nth-child(2) {
                opacity: 0;
            }

            .hamburger.open span:nth-child(3) {
                transform: translateY(-7px) rotate(-45deg);
            }

            .help-hero {
                padding-top: 110px;
                padding-bottom: 34px;
            }

            .help-hero h1 {
                font-size: 36px;
            }

            .quick-entry-grid {
                grid-template-columns: 1fr;
            }

            .quick-entry-item {
                max-width: 100%;
            }

            .cta-dark-panel {
                padding: 40px 26px;
            }

            .cta-dark-panel .d-flex {
                flex-direction: column;
                align-items: flex-start !important;
                gap: 14px;
            }

            .cta-dark-panel .btn-primary-custom,
            .cta-dark-panel .btn-outline-light-custom {
                width: 100%;
                justify-content: center;
            }

            .notice-banner {
                flex-direction: column;
                padding: 20px;
            }

            .footer-bottom-legal span {
                margin-left: 0;
                display: inline-block;
                margin-right: 14px;
            }
        }