/* roulang page: index */
:root {
            --bg-main: #F6F7F8;
            --bg-card: #FFFFFF;
            --text-strong: #14171B;
            --text-body: #3B4450;
            --text-weak: #6B7681;
            --border-light: #E4E7EA;
            --dark-bg: #10151B;
            --primary: #00A882;
            --primary-hover: #008F73;
            --primary-soft: rgba(0, 168, 130, 0.12);
            --primary-fade: rgba(0, 168, 130, 0.06);
            --amber: #FFB52E;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 22px;
            --shadow-sm: 0 6px 20px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.12);
            --container: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg-main);
            color: var(--text-body);
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Inter", "SF Pro Display", sans-serif;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        body.modal-open {
            overflow: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        ::selection {
            background: var(--primary);
            color: #fff;
        }

        ::-webkit-scrollbar {
            width: 10px;
            height: 8px;
        }

        ::-webkit-scrollbar-thumb {
            background: #C3C9CE;
            border-radius: 999px;
            border: 2px solid #F6F7F8;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: #97A1A9;
        }

        ::-webkit-scrollbar-track {
            background: #F6F7F8;
        }

        .container {
            width: min(var(--container), 100% - 48px);
            margin-inline: auto;
        }

        .section {
            padding: 76px 0;
        }

        .section-white {
            background: #FFFFFF;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .section-head {
            display: flex;
            justify-content: space-between;
            gap: 30px;
            align-items: flex-end;
            margin-bottom: 44px;
        }

        .section-head-left {
            max-width: 720px;
        }

        .section-kicker {
            font-size: 13px;
            letter-spacing: 0.14em;
            font-weight: 700;
            color: var(--primary);
            display: block;
            margin-bottom: 8px;
        }

        .section-kicker.light {
            color: rgba(255, 255, 255, 0.65);
        }

        .section-head h2,
        .block-title {
            font-size: clamp(26px, 3vw, 36px);
            line-height: 1.25;
            margin: 0;
            color: var(--text-strong);
            font-weight: 700;
            letter-spacing: -0.02em;
        }

        .section-head .section-lead {
            margin-top: 14px;
            color: var(--text-weak);
            font-size: 16px;
            line-height: 1.8;
        }

        .section-head-right {
            flex: 0 0 auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            line-height: 1;
            border: 1px solid transparent;
            cursor: pointer;
            transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
            white-space: nowrap;
            user-select: none;
        }

        .btn:active {
            transform: scale(0.98);
        }

        .btn-sm {
            height: 38px;
            padding: 0 16px;
            font-size: 14px;
        }

        .btn-md {
            height: 48px;
            padding: 0 24px;
            font-size: 15px;
        }

        .btn-lg {
            height: 52px;
            padding: 0 30px;
            font-size: 17px;
            border-radius: var(--radius-md);
        }

        .btn-primary {
            background: var(--primary);
            color: #ffffff;
            border-color: var(--primary);
            box-shadow: 0 8px 18px rgba(0, 168, 130, 0.24);
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 14px 24px rgba(0, 168, 130, 0.28);
        }

        .btn-light {
            background: #FFFFFF;
            color: var(--text-strong);
            border-color: #FFFFFF;
        }

        .btn-light:hover {
            background: #EFF2F3;
            transform: translateY(-2px);
            border-color: #EFF2F3;
        }

        .btn-outline-light {
            background: transparent;
            color: #FFFFFF;
            border: 1px solid rgba(255, 255, 255, 0.38);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.65);
            transform: translateY(-2px);
        }

        .btn-secondary {
            background: #F0F2F4;
            color: var(--text-strong);
        }

        .btn-secondary:hover {
            background: #E4E8EB;
            transform: translateY(-2px);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 12px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.26);
            color: rgba(255, 255, 255, 0.9);
        }

        .badge i {
            font-size: 12px;
            color: var(--amber);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 80;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid transparent;
            transition: border-color 0.24s ease, box-shadow 0.24s ease, background-color 0.24s ease;
        }

        .site-header.is-scrolled {
            border-bottom-color: var(--border-light);
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.05);
        }

        .header-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            padding-bottom: 12px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 23px;
            letter-spacing: -0.01em;
            color: var(--text-strong);
            transition: opacity 0.2s;
        }

        .brand-logo:hover {
            opacity: 0.82;
        }

        .brand-logo .logo-dot {
            width: 12px;
            height: 12px;
            border-radius: 5px;
            background: var(--primary);
            box-shadow: 0 0 0 5px var(--primary-soft);
            flex: 0 0 auto;
        }

        .brand-logo .logo-text {
            font-size: 23px;
            font-weight: 800;
        }

        .header-tools {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .header-live-note {
            font-size: 13px;
            color: var(--text-weak);
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .header-live-note .dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 0 4px var(--primary-soft);
        }

        .site-header-nav {
            border-top: 1px solid var(--border-light);
        }

        .site-header-nav .container {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .tabnav {
            display: flex;
            gap: 8px;
            padding: 10px 2px 12px;
            overflow-x: auto;
            overflow-y: hidden;
            scrollbar-width: none;
            white-space: nowrap;
        }

        .tabnav::-webkit-scrollbar {
            display: none;
        }

        .tabchip {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 38px;
            padding: 0 16px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-weak);
            background: transparent;
            transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
            border: 1px solid transparent;
            flex: 0 0 auto;
        }

        .tabchip:hover {
            background: var(--primary-fade);
            color: var(--text-strong);
            border-color: rgba(0, 168, 130, 0.2);
        }

        .tabchip.active {
            background: var(--primary);
            color: #ffffff;
            font-weight: 700;
            border-color: var(--primary);
            box-shadow: 0 6px 14px rgba(0, 168, 130, 0.22);
        }

        .hero {
            position: relative;
            background: var(--dark-bg);
            color: #FFFFFF;
            overflow: hidden;
            padding: 92px 0 96px;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.34;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(105deg, rgba(9, 13, 18, 0.97) 6%, rgba(11, 17, 22, 0.88) 50%, rgba(16, 25, 31, 0.58) 100%);
        }

        .hero-grid {
            position: relative;
            z-index: 3;
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 56px;
            align-items: center;
        }

        .hero h1 {
            margin: 18px 0 18px;
            font-size: clamp(34px, 4vw, 58px);
            font-weight: 800;
            line-height: 1.24;
            letter-spacing: -0.035em;
            color: #FFFFFF;
        }

        .hero-sub {
            font-size: 17px;
            line-height: 1.85;
            color: #C6CED6;
            max-width: 600px;
            margin-bottom: 30px;
        }

        .hero-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 24px;
        }

        .hero-points {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            padding: 0;
            margin: 24px 0 0;
            list-style: none;
            color: #D4DAE0;
            font-size: 14px;
        }

        .hero-points li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .hero-points li i {
            color: var(--primary);
            font-size: 14px;
            background: rgba(0, 168, 130, 0.18);
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .hero-visual {
            position: relative;
            min-height: 420px;
        }

        .hero-visual-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 20px;
            padding: 12px;
            max-width: 520px;
            margin-left: auto;
            box-shadow: 0 28px 70px rgba(0, 0, 0, 0.35);
            backdrop-filter: blur(6px);
            transform: perspective(1000px) rotateY(-4deg);
        }

        .hero-visual-card img {
            border-radius: 14px;
            width: 100%;
            max-height: 420px;
            object-fit: cover;
        }

        .hero-float-badge {
            position: absolute;
            bottom: 26px;
            left: -12px;
            background: #FFFFFF;
            color: var(--text-strong);
            border-radius: 14px;
            padding: 14px 18px;
            box-shadow: 0 14px 34px rgba(0, 0, 0, 0.22);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .hero-float-badge .fa-circle-check {
            color: var(--primary);
            font-size: 24px;
        }

        .hero-float-badge strong {
            display: block;
            font-size: 15px;
        }

        .hero-float-badge span {
            font-size: 13px;
            color: var(--text-weak);
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .stats-strip {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            padding: 28px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            padding: 0;
            margin: 0;
            list-style: none;
        }

        .stats-grid li {
            display: flex;
            align-items: center;
            gap: 14px;
            background: var(--bg-main);
            border: 1px solid var(--border-light);
            border-radius: 16px;
            padding: 18px 20px;
            min-height: 74px;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .stats-grid li:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-sm);
        }

        .stats-grid i {
            width: 42px;
            height: 42px;
            border-radius: 13px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary);
            background: var(--primary-soft);
            flex: 0 0 auto;
        }

        .stats-grid strong {
            display: block;
            color: var(--text-strong);
            font-size: 16px;
            line-height: 1.3;
            margin-bottom: 2px;
            font-weight: 700;
        }

        .stats-grid small {
            color: var(--text-weak);
            font-size: 13px;
            line-height: 1.4;
        }

        .value-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 22px;
            margin-top: 48px;
        }

        .value-card {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-xl);
            padding: 32px 30px;
            transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
        }

        .value-card:hover {
            border-color: rgba(0, 168, 130, 0.5);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .value-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--primary-fade);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 20px;
        }

        .value-card h3 {
            margin: 0 0 10px;
            font-size: 20px;
            color: var(--text-strong);
            line-height: 1.4;
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        .value-card p {
            margin: 0;
            color: var(--text-weak);
            font-size: 15px;
            line-height: 1.8;
        }

        .preview-section {
            background: #FFFFFF;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            padding: 84px 0;
            overflow: hidden;
        }

        .preview-stage {
            position: relative;
            display: grid;
            grid-template-columns: 1fr 1.15fr 1fr;
            align-items: center;
            min-height: 480px;
            margin-top: 24px;
        }

        .preview-card {
            border-radius: 18px;
            overflow: hidden;
            background: #EEF1F3;
            border: 1px solid var(--border-light);
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .preview-card img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            display: block;
        }

        .preview-prev {
            transform: scale(0.86) translateX(40px);
            opacity: 0.58;
        }

        .preview-next {
            transform: scale(0.86) translateX(-40px);
            opacity: 0.58;
        }

        .preview-current {
            transform: scale(1.05);
            opacity: 1;
            z-index: 2;
            box-shadow: 0 26px 66px rgba(0, 0, 0, 0.14);
        }

        .preview-meta {
            text-align: center;
            display: flex;
            justify-content: center;
            gap: 12px;
            margin-top: 32px;
            flex-wrap: wrap;
        }

        .preview-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            background: var(--bg-main);
            border: 1px solid var(--border-light);
            color: var(--text-weak);
        }

        .preview-arrows {
            position: absolute;
            right: 0;
            top: -20px;
            display: inline-flex;
            gap: 8px;
            z-index: 4;
        }

        .preview-arrows span {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid var(--border-light);
            background: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--text-weak);
        }

        .sysreq-wrap {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .sysreq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
        }

        .sysreq-panel {
            padding: 36px 40px;
        }

        .sysreq-panel + .sysreq-panel {
            border-left: 1px solid var(--border-light);
        }

        .sysreq-panel h3 {
            margin: 0 0 18px;
            font-size: 20px;
            color: var(--text-strong);
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sysreq-panel h3 i {
            color: var(--primary);
            font-size: 18px;
            background: var(--primary-fade);
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
        }

        .sysreq-line {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            padding: 14px 0;
            border-bottom: 1px solid var(--border-light);
            gap: 24px;
        }

        .sysreq-line:last-child {
            border-bottom: none;
        }

        .sysreq-label {
            font-size: 14px;
            color: var(--text-weak);
            flex: 0 0 78px;
        }

        .sysreq-value {
            text-align: right;
            color: var(--text-strong);
            font-size: 15px;
            font-weight: 500;
        }

        .testimonial-band {
            background: var(--dark-bg);
            color: #FFFFFF;
            padding: 82px 0;
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 46px;
        }

        .testimonial-card {
            background: #FFFFFF;
            border-radius: var(--radius-xl);
            padding: 28px;
            color: var(--text-body);
            box-shadow: 0 16px 34px rgba(0, 0, 0, 0.22);
            display: flex;
            flex-direction: column;
            min-height: 260px;
        }

        .testimonial-card .stars {
            color: var(--amber);
            font-size: 14px;
            letter-spacing: 2px;
            margin-bottom: 16px;
        }

        .testimonial-card blockquote {
            margin: 0 0 20px;
            font-size: 16px;
            line-height: 1.85;
            color: #2C333A;
        }

        .testimonial-author {
            margin-top: auto;
            border-top: 1px solid var(--border-light);
            padding-top: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-weak);
        }

        .testimonial-author .avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-fade);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
        }

        .news-section {
            background: var(--bg-main);
            padding: 84px 0;
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
            margin-top: 40px;
        }

        .news-card {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 24px;
            display: flex;
            flex-direction: column;
            transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(0, 168, 130, 0.4);
        }

        .news-card-top {
            display: flex;
            justify-content: space-between;
            gap: 12px;
            align-items: center;
            margin-bottom: 12px;
        }

        .news-card-top .badge-solid {
            display: inline-flex;
            align-items: center;
            padding: 4px 11px;
            background: var(--primary-fade);
            color: var(--primary);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
        }

        .news-card time {
            font-size: 12px;
            color: #9AA3AB;
        }

        .news-card h3 {
            margin: 0 0 10px;
            line-height: 1.55;
            font-size: 18px;
        }

        .news-card h3 a {
            color: var(--text-strong);
            font-weight: 700;
            transition: color 0.2s ease;
        }

        .news-card h3 a:hover {
            color: var(--primary);
        }

        .news-card p {
            margin: 0 0 18px;
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.75;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card .read-more {
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--primary);
            font-weight: 600;
        }

        .news-card .read-more i {
            transition: transform 0.2s;
        }

        .news-card:hover .read-more i {
            transform: translateX(4px);
        }

        .news-empty {
            grid-column: 1 / -1;
            min-height: 240px;
            background: #FFFFFF;
            border: 1px dashed var(--border-light);
            border-radius: var(--radius-xl);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: var(--text-weak);
            text-align: center;
            font-size: 16px;
            padding: 40px;
        }

        .news-empty i {
            font-size: 40px;
            color: #C5CDD3;
            margin-bottom: 12px;
        }

        .download-band {
            position: relative;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            padding: 100px 0;
            overflow: hidden;
        }

        .download-band::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(8, 13, 18, 0.97) 18%, rgba(10, 18, 24, 0.9) 68%, rgba(12, 22, 29, 0.74) 100%);
        }

        .download-band .container {
            position: relative;
            z-index: 2;
            max-width: 860px;
            text-align: center;
        }

        .download-band h2 {
            color: #FFFFFF;
            font-size: clamp(27px, 3.4vw, 40px);
            margin: 12px 0 18px;
            line-height: 1.3;
            letter-spacing: -0.02em;
        }

        .download-band p {
            color: #C7CFD7;
            font-size: 16px;
            line-height: 1.9;
            max-width: 700px;
            margin: 0 auto 30px;
        }

        .download-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }

        .download-note {
            margin-top: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.58);
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .download-note span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .faq-section {
            padding: 84px 0;
        }

        .faq-wrap {
            max-width: 880px;
            margin: 44px auto 0;
        }

        .faq-item {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            margin-bottom: 16px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
            transition: border-color 0.2s ease;
        }

        .faq-item[open] {
            border-color: rgba(0, 168, 130, 0.45);
        }

        .faq-item summary {
            list-style: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-strong);
            border-radius: var(--radius-lg);
            transition: color 0.2s;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item[open] summary {
            color: var(--primary);
        }

        .faq-toggle {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-main);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            line-height: 1;
            color: var(--text-weak);
            transition: transform 0.22s, background-color 0.22s, color 0.22s;
            flex: 0 0 auto;
        }

        .faq-item[open] .faq-toggle {
            background: var(--primary);
            color: #FFFFFF;
            transform: rotate(45deg);
        }

        .faq-toggle::before {
            content: "\002B";
            font-weight: 300;
        }

        .faq-answer {
            padding: 0 22px 22px;
            color: var(--text-weak);
            line-height: 1.9;
            font-size: 15px;
            animation: faqIn 0.22s ease;
        }

        @keyframes faqIn {
            from {
                opacity: 0;
                transform: translateY(-6px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .cta-panel {
            background: #FFFFFF;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            padding: 72px 0;
            text-align: center;
        }

        .cta-panel h2 {
            margin: 0;
            font-size: clamp(24px, 2.6vw, 34px);
            color: var(--text-strong);
        }

        .cta-panel p {
            color: var(--text-weak);
            max-width: 560px;
            margin: 16px auto 28px;
            line-height: 1.9;
        }

        .cta-panel .contact-mail {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 17px;
            padding: 10px 18px;
            border-radius: 999px;
            background: var(--primary-fade);
        }

        .footer {
            background: #0D1217;
            color: #B9C2CA;
            padding-top: 60px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 44px;
            padding-bottom: 42px;
        }

        .footer-brand-name {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: #FFFFFF;
            font-weight: 800;
            font-size: 24px;
            margin-bottom: 16px;
        }

        .footer-brand-name .logo-dot {
            width: 12px;
            height: 12px;
            border-radius: 5px;
            background: var(--primary);
            box-shadow: 0 0 0 5px rgba(0, 168, 130, 0.16);
        }

        .footer h4 {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 18px;
        }

        .footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 12px;
        }

        .footer ul li a {
            color: #B9C2CA;
            transition: color 0.2s, padding-left 0.2s;
        }

        .footer ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 24px 0;
            color: #8A949E;
            font-size: 13px;
            display: flex;
            justify-content: space-between;
            gap: 18px;
            flex-wrap: wrap;
        }

        .footer-bottom .copyright {
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .footer-bottom .copyright i {
            font-size: 6px;
            color: var(--primary);
        }

        .empty-state {
            text-align: center;
            padding: 44px 20px;
            color: var(--text-weak);
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            font-size: 15px;
        }

        .card-pill-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .card-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 10px;
            font-size: 12px;
            color: var(--text-weak);
            background: var(--bg-main);
            border-radius: 999px;
            border: 1px solid var(--border-light);
        }

        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .hero-visual {
                min-height: auto;
            }

            .hero-visual-card {
                margin-left: 0;
                max-width: 520px;
            }

            .preview-page {
                overflow-x: auto;
            }

            .value-grid {
                grid-template-columns: 1fr 1fr;
            }

            .testimonial-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }

            .container {
                width: calc(100% - 32px);
            }

            .header-main {
                padding-top: 12px;
                padding-bottom: 10px;
            }

            .header-live-note {
                display: none;
            }

            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
                margin-bottom: 30px;
            }

            .hero {
                padding: 62px 0 68px;
            }

            .hero h1 {
                font-size: 32px;
                line-height: 1.3;
            }

            .hero-sub {
                font-size: 16px;
            }

            .hero-meta {
                gap: 8px;
            }

            .hero-actions .btn {
                padding: 0 20px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stats-grid li {
                padding: 14px 14px;
            }

            .value-grid {
                grid-template-columns: 1fr;
            }

            .preview-stage {
                min-height: auto;
            }

            .preview-card {
                border-radius: 14px;
            }

            .preview-card img {
                height: 220px;
            }

            .preview-prev,
            .preview-next {
                transform: scale(0.94) translateX(0);
                opacity: 0.65;
            }

            .preview-current {
                transform: scale(1.04);
            }

            .sysreq-grid {
                grid-template-columns: 1fr;
            }

            .sysreq-panel + .sysreq-panel {
                border-left: 0;
                border-top: 1px solid var(--border-light);
            }

            .sysreq-panel {
                padding: 30px 24px;
            }

            .testimonial-grid {
                grid-template-columns: 1fr;
            }

            .news-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .btn-lg {
                height: 48px;
                padding: 0 21px;
                font-size: 15px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .stats-grid strong {
                font-size: 14px;
            }

            .stats-grid small {
                font-size: 12px;
            }

            .value-card {
                padding: 24px 20px;
            }

            .hero-points {
                gap: 10px;
                flex-direction: column;
                align-items: flex-start;
            }

            .hero-visual-card {
                margin-right: 0;
            }

            .hero-float-badge {
                left: 4px;
                bottom: 12px;
                padding: 10px 12px;
            }

            .download-actions {
                flex-direction: column;
            }

            .download-actions .btn {
                width: 100%;
            }

            .preview-card img {
                height: 180px;
            }

            .preview-meta span {
                font-size: 12px;
            }
        }

/* roulang page: article */
:root {
  --bg-page: #F6F7F8;
  --bg-card: #FFFFFF;
  --text-ink: #14171B;
  --text-mute: #6B7681;
  --line-gray: #E4E7EA;
  --deep-block: #10151B;
  --brand: #00A882;
  --brand-hover: #008F73;
  --brand-disabled: #A6D9CC;
  --amber: #FFB52E;
  --radius-btn: 10px;
  --radius-card: 16px;
  --shadow-soft: 0 6px 28px rgba(16, 21, 27, 0.06);
  --shadow-hover: 0 12px 36px rgba(16, 21, 27, 0.10);
  --container-w: 1200px;
  --transition: 200ms ease;
  --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Inter", "SF Pro Display", sans-serif;
  --number-stack: "Inter", "SF Pro Display", "DIN Alternate", "Roboto", sans-serif;
}
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-stack);
  background: var(--bg-page);
  color: var(--text-ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
input, textarea { font-family: inherit; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 4px; }
:focus:not(:focus-visible) { outline: none; }
.container { width: 100%; max-width: var(--container-w); margin: 0 auto; padding-left: 24px; padding-right: 24px; }
::selection { background: rgba(0, 168, 130, 0.18); }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #C0C8D0; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: #96A0A9; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: var(--radius-btn); font-weight: 600; transition: all var(--transition); line-height: 1; white-space: nowrap; }
.btn-primary { background: var(--brand); color: #fff; padding: 12px 22px; font-size: 15px; }
.btn-primary:hover { background: var(--brand-hover); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(0, 168, 130, 0.25); }
.btn-primary:active { transform: scale(0.97); }
.btn-outline { border: 1px solid rgba(255, 255, 255, 0.5); color: #fff; padding: 11px 22px; font-size: 15px; background: rgba(255, 255, 255, 0.06); backdrop-filter: blur(4px); }
.btn-outline:hover { background: rgba(255, 255, 255, 0.14); border-color: rgba(255, 255, 255, 0.8); }
.btn-sm { padding: 9px 16px; font-size: 14px; }
.logo-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--brand); display: inline-block; margin-right: 8px; position: relative; }
.logo-dot::after { content: ''; position: absolute; width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--brand); top: 50%; left: 50%; transform: translate(-50%, -50%); opacity: 0.3; }
.brand-logo { display: flex; align-items: center; font-size: 20px; font-weight: 800; letter-spacing: -0.02em; color: var(--text-ink); }
.brand-logo .logo-text { line-height: 1.3; }

.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(10px); border-bottom: 1px solid transparent; }
.scrolled .site-header { border-bottom-color: var(--line-gray); }
.header-main { display: flex; justify-content: space-between; align-items: center; padding-top: 14px; padding-bottom: 14px; gap: 16px; }
.header-tools { display: flex; align-items: center; gap: 18px; }
.header-live-note { display: inline-flex; align-items: center; font-size: 13px; color: var(--text-mute); gap: 7px; }
.header-live-note .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--brand); display: inline-block; animation: pulse-dot 2s infinite; }
@keyframes pulse-dot { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }
.site-header-nav { background: #fff; border-top: 1px solid #F0F1F3; }
.tabnav { display: flex; align-items: center; gap: 4px; padding: 8px 0; overflow-x: auto; scrollbar-width: none; }
.tabnav::-webkit-scrollbar { display: none; }
.tabchip { padding: 7px 18px; border-radius: 100px; font-size: 14px; font-weight: 500; color: var(--text-mute); transition: all var(--transition); white-space: nowrap; }
.tabchip:hover { background: rgba(0, 168, 130, 0.08); color: #006B56; }
.tabchip.active { background: var(--brand); color: #fff; font-weight: 600; }
.tabchip:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }

.article-hero-banner { background: var(--deep-block); padding: 40px 0 48px; position: relative; overflow: hidden; }
.article-hero-banner::before { content: ''; position: absolute; top: -20px; right: -10%; width: 420px; height: 420px; background: radial-gradient(circle, rgba(0, 168, 130, 0.2) 0%, transparent 70%); pointer-events: none; }
.article-hero-banner .container { position: relative; z-index: 2; }
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 7px; font-size: 13px; color: #9AA3AC; margin-bottom: 22px; }
.breadcrumb a { color: #9AA3AC; transition: color var(--transition); display: inline-flex; align-items: center; gap: 4px; }
.breadcrumb a:hover { color: #00A882; }
.breadcrumb .sep { opacity: 0.5; }
.article-deep-title { font-size: 36px; font-weight: 750; color: #fff; line-height: 1.4; letter-spacing: -0.02em; max-width: 800px; margin: 0; }
@media (max-width:1024px) { .article-deep-title { font-size: 30px; } }
@media (max-width:640px) { .article-deep-title { font-size: 25px; } }
.article-meta-deep { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 22px; color: #8A949E; font-size: 14px; margin-top: 20px; }
.meta-item { display: inline-flex; align-items: center; gap: 7px; }
.meta-cat { background: rgba(0, 168, 130, 0.18); color: #35D6AB; padding: 3px 12px; border-radius: 99px; font-size: 13px; font-weight: 500; }

.article-wrap { padding: 52px 0 70px; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 44px; align-items: start; }
@media (max-width: 1000px) { .article-layout { grid-template-columns: 1fr; gap: 36px; } }
.article-body { background: #fff; border: 1px solid #E4E7EA; border-radius: 16px; padding: 42px 48px; }
@media (max-width: 768px) { .article-body { padding: 24px 20px; } }
.article-body p { font-size: 16px; line-height: 1.85; color: #31383F; margin-bottom: 1.4rem; }
.article-body h2 { font-size: 25px; font-weight: 680; margin: 2rem 0 1rem; line-height: 1.4; color: var(--text-ink); position: relative; padding-left: 16px; }
.article-body h2::before { content: ''; position: absolute; left: 0; top: 4px; bottom: 4px; width: 4px; border-radius: 4px; background: var(--brand); }
.article-body h3 { font-size: 18px; font-weight: 650; margin: 1.6rem 0 0.7rem; color: var(--text-ink); }
.article-body ul, .article-body ol { margin: 0 0 1.4rem 1.2em; color: #31383F; line-height: 1.9; }
.article-body ul li, .article-body ol li { margin-bottom: 4px; }
.article-body blockquote { margin: 1.8rem 0; padding: 14px 22px; border-left: 4px solid var(--brand); background: #F2FBFA; border-radius: 0 12px 12px 0; color: var(--text-mute); font-size: 15px; }
.article-body img { border-radius: 12px; margin: 1.6rem 0; width: 100%; height: auto; object-fit: cover; }
.article-body code { background: #F1F2F4; padding: 2px 6px; border-radius: 4px; font-size: 14px; font-family: 'SF Mono', 'Fira Code', monospace; }
.article-body pre { background: #10151B; border-radius: 12px; padding: 18px 20px; overflow-x: auto; margin: 1.6rem 0; color: #E4E7EA; font-size: 13px; line-height: 1.7; }
.article-body pre code { background: transparent; padding: 0; color: #E4E7EA; }
.article-body table { width: 100%; border-collapse: collapse; margin: 1.6rem 0; font-size: 14px; }
.article-body th { text-align: left; background: #F6F7F8; font-weight: 600; }
.article-body td, .article-body th { border-bottom: 1px solid #E4E7EA; padding: 10px 12px; }
.article-body a { color: #00A882; font-weight: 500; border-bottom: 1px solid #B7E8DA; transition: border-color var(--transition); }
.article-body a:hover { border-bottom-color: #008F73; color: #008F73; }

.sidebar .side-card { background: #fff; border: 1px solid #E4E7EA; border-radius: 16px; padding: 24px; margin-bottom: 24px; }
.side-card-title { font-size: 16px; font-weight: 750; margin-bottom: 16px; display: flex; align-items: center; justify-content: space-between; color: var(--text-ink); letter-spacing: -0.01em; }
.side-card-title::after { content: ''; width: 20px; height: 2px; background: var(--brand); border-radius: 3px; }
.sidebar-info-row { display: flex; align-items: flex-start; gap: 10px; padding: 10px 0; border-bottom: 1px dashed #EDEEF0; font-size: 14px; }
.sidebar-info-row:last-child { border-bottom: none; }
.sidebar-info-row .lbl { color: var(--text-mute); min-width: 62px; flex-shrink: 0; font-size: 13px; }
.sidebar-info-row .val { color: var(--text-ink); font-weight: 500; word-break: break-all; }
.tag-wrap { display: flex; flex-wrap: wrap; gap: 6px; }
.tag-pill { padding: 4px 12px; background: #F1F3F5; color: #4A5460; border-radius: 100px; font-size: 12px; font-weight: 500; transition: all var(--transition); }
.tag-pill:hover { background: rgba(0,168,130,0.12); color: #008F73; }
.rel-list { list-style: none; padding: 0; margin: 0; }
.rel-list li { border-bottom: 1px dashed #EAECEF; padding: 10px 0; }
.rel-list li:last-child { border-bottom: none; }
.rel-list a { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: #31383F; line-height: 1.5; transition: color var(--transition); }
.rel-list a:hover { color: #008F73; }
.rel-list .rel-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--brand); flex-shrink: 0; margin-top: 7px; }

.backto { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 14px; color: #4A5460; padding: 10px 16px; border-radius: 40px; transition: all var(--transition); background: #fff; border: 1px solid var(--line-gray); }
.backto:hover { border-color: var(--brand); color: var(--brand); transform: translateX(-4px); }
.backto i { font-size: 12px; }

.empty-state { padding: 70px 20px; text-align: center; }
.empty-state .empty-icon { font-size: 44px; color: #A7B0B9; margin-bottom: 16px; }
.empty-state h2 { font-size: 22px; font-weight: 700; margin-bottom: 10px; color: var(--text-ink); }
.empty-state p { color: var(--text-mute); font-size: 15px; margin-bottom: 24px; }

.footer { background: #0D1116; color: #9AA3AC; margin-top: 60px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding: 60px 0 30px; }
@media (max-width:900px) { .footer-grid { grid-template-columns: 1fr; gap: 32px; padding-top: 46px; } }
.footer-brand-name { font-size: 24px; font-weight: 800; color: #fff; letter-spacing: -0.02em; display: flex; align-items: center; margin-bottom: 16px; }
.footer h4 { font-size: 15px; font-weight: 650; color: #F1F3F5; margin-bottom: 14px; }
.footer ul { list-style: none; padding: 0; }
.footer ul li { margin-bottom: 9px; }
.footer ul a { color: #8A949E; font-size: 14px; transition: color var(--transition); }
.footer ul a:hover { color: var(--brand); }
.footer-bottom { border-top: 1px solid #232A32; padding: 22px 0; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 13px; color: #6E7882; }
@media (max-width: 640px) {
  .header-tools .header-live-note { display: none; }
  .container { padding-left: 18px; padding-right: 18px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; padding: 40px 0 20px; }
  .footer-bottom { flex-direction: column; }
}

/* roulang page: category2 */
:root {
            --c-bg: #F6F7F8;
            --c-card: #FFFFFF;
            --c-ink: #14171B;
            --c-sub: #6B7681;
            --c-line: #E4E7EA;
            --c-dark: #10151B;
            --c-primary: #00A882;
            --c-primary-hover: #008F73;
            --c-primary-disabled: #A6D9CC;
            --c-amber: #FFB52E;
            --radius-btn: 10px;
            --radius-card: 16px;
            --radius-img: 12px;
            --shadow-soft: 0 14px 34px rgba(0, 0, 0, 0.05);
            --shadow-float: 0 18px 40px rgba(0, 0, 0, 0.08);
            --ease-md: 200ms ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', 'Inter', sans-serif;
            background-color: var(--c-bg);
            color: var(--c-ink);
            font-size: 16px;
            line-height: 1.75;
            margin: 0;
            padding: 0;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--ease-md);
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            padding: 0;
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5 {
            font-weight: 600;
            line-height: 1.3;
            margin: 0 0 12px;
            text-wrap: balance;
        }

        .container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(246, 247, 248, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid transparent;
            transition: border-color 160ms ease, box-shadow 160ms ease;
        }

        .site-header.scrolled {
            border-bottom-color: rgba(228, 231, 234, 0.9);
            box-shadow: 0 8px 30px rgba(16, 21, 27, 0.04);
        }

        .header-main {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 14px;
            padding-bottom: 14px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 24px;
            letter-spacing: -0.02em;
            color: var(--c-ink);
        }

        .logo-dot {
            width: 10px;
            height: 10px;
            background: var(--c-primary);
            border-radius: 4px;
            display: inline-flex;
            transform: rotate(45deg);
        }

        .logo-text {
            font-weight: 800;
            font-size: 22px;
        }

        .header-tools {
            display: flex;
            align-items: center;
            gap: 22px;
        }

        .header-live-note {
            font-size: 13px;
            color: var(--c-sub);
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .header-live-note .dot {
            width: 7px;
            height: 7px;
            border-radius: 999px;
            background: var(--c-primary);
            display: inline-block;
            box-shadow: 0 0 0 3px rgba(0, 168, 130, 0.15);
        }

        .site-header-nav {
            border-top: 1px solid var(--c-line);
            position: relative;
        }

        .tabnav {
            display: flex;
            gap: 4px;
            padding: 8px 0;
            white-space: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .tabnav::-webkit-scrollbar {
            display: none;
        }

        .tabchip {
            padding: 8px 20px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: #4A545E;
            background: transparent;
            border: 1px solid transparent;
            transition: all 200ms ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .tabchip:hover {
            background: #F0FAF7;
            color: var(--c-primary);
            border-color: rgba(0, 168, 130, 0.16);
        }

        .tabchip.active {
            background: var(--c-dark);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 6px 16px rgba(16, 21, 27, 0.16);
        }

        .tabchip.active:hover {
            background: #1F262E;
            color: #fff;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            border: none;
            line-height: 1.2;
            transition: all 220ms ease;
            text-align: center;
        }

        .btn-primary {
            background: var(--c-primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(0, 168, 130, 0.26);
        }

        .btn-primary:hover {
            background: var(--c-primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 143, 115, 0.28);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-second {
            background: #ffffff;
            color: var(--c-ink);
            border: 1px solid var(--c-line);
            box-shadow: 0 2px 8px rgba(16, 21, 27, 0.02);
        }

        .btn-second:hover {
            border-color: #B9C0C7;
            background: #FCFDFD;
            transform: translateY(-1px);
        }

        .btn-second:active {
            transform: scale(0.98);
        }

        .btn-dark {
            background: var(--c-dark);
            color: #fff;
        }

        .btn-dark:hover {
            background: #26313B;
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 9px 16px;
            font-size: 13px;
        }

        .btn-lg {
            padding: 16px 34px;
            font-size: 16px;
            border-radius: 10px;
        }

        .download-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
            margin-top: 18px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            padding: 7px 14px;
            background: #F0FAF7;
            color: var(--c-primary-hover);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            gap: 6px;
        }

        .section {
            padding: 88px 0;
        }

        .section-label {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--c-primary);
        }

        .section-label .en-word {
            color: #A0AAb4;
            letter-spacing: 0.08em;
        }

        .section-title {
            font-size: 32px;
            font-weight: 650;
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        .section-sub {
            font-size: 16px;
            line-height: 1.7;
            color: var(--c-sub);
            max-width: 640px;
            margin-bottom: 32px;
        }

        .text-center {
            text-align: center;
        }

        .footer {
            background: var(--c-dark);
            color: #D7DCE1;
            padding: 64px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 30px;
        }

        .footer h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 14px;
        }

        .footer ul a {
            color: #A6AEB6;
        }

        .footer ul a:hover {
            color: #45D6B2;
        }

        .footer-brand-name {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }

        .footer-bottom {
            border-top: 1px solid #2B343D;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: #78828A;
        }

        .copyright {
            color: #a0a9b1;
        }

        .page-hero {
            background-color: #ECF1F3;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(246, 247, 248, 0.96) 20%, rgba(246, 247, 248, 0.82) 55%, rgba(246, 247, 248, 0.4) 100%);
        }

        .page-hero-inner {
            position: relative;
            padding: 56px 0 48px;
        }

        .crumb-nav {
            font-size: 13px;
            color: var(--c-sub);
            margin-bottom: 22px;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .crumb-nav a:hover {
            color: var(--c-primary);
        }

        .page-hero h1 {
            font-size: 46px;
            font-weight: 750;
            letter-spacing: -0.02em;
            margin: 0 0 16px;
            max-width: 720px;
        }

        .page-hero p {
            font-size: 17px;
            color: #36454F;
            line-height: 1.8;
            max-width: 680px;
        }

        .hero-meta-strip {
            margin-top: 26px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .dot-arrow {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-right: 2px solid var(--c-primary);
            border-top: 2px solid var(--c-primary);
            transform: rotate(45deg);
            margin-left: 6px;
        }

        .focus-layout {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 24px;
            align-items: stretch;
        }

        .card {
            background: var(--c-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--c-line);
            overflow: hidden;
            transition: box-shadow 200ms ease, transform 200ms ease, border-color 200ms ease;
        }

        .card:hover {
            box-shadow: var(--shadow-soft);
            border-color: #D3D9DD;
        }

        .focus-card-large {
            display: flex;
            flex-direction: column;
            background: var(--c-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--c-line);
            overflow: hidden;
            transition: box-shadow 220ms ease, transform 220ms ease;
        }

        .focus-card-large:hover {
            box-shadow: var(--shadow-float);
            transform: translateY(-3px);
        }

        .focus-img-wrap {
            position: relative;
            background: #E8ECEF;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }

        .focus-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .focus-card-body {
            padding: 20px 24px 24px;
        }

        .focus-card-body h3 {
            font-size: 20px;
            margin: 10px 0 8px;
        }

        .focus-card-body p {
            color: var(--c-sub);
            font-size: 14px;
            line-height: 1.7;
        }

        .side-list-card {
            display: flex;
            flex-direction: column;
            background: var(--c-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--c-line);
            padding: 18px 20px;
            height: 100%;
            justify-content: center;
            gap: 26px;
        }

        .side-list-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .side-list-item .iconbox {
            flex: 0 0 42px;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            background: #F0FAF7;
            color: var(--c-primary);
        }

        .side-list-item h4 {
            font-size: 15px;
            margin-bottom: 3px;
        }

        .side-list-item p {
            font-size: 13px;
            line-height: 1.6;
            color: var(--c-sub);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .step-item {
            position: relative;
            background: #FFFFFF;
            border: 1px solid var(--c-line);
            border-radius: var(--radius-card);
            padding: 32px 20px 22px 20px;
            transition: box-shadow 200ms ease, transform 200ms ease;
        }

        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-soft);
        }

        .step-num {
            font-size: 48px;
            font-weight: 700;
            line-height: 1;
            color: #E8EDF0;
            position: absolute;
            top: 16px;
            right: 18px;
            letter-spacing: -0.03em;
        }

        .step-icon {
            width: 48px;
            height: 48px;
            background: var(--c-dark);
            color: #ffffff;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
        }

        .step-item h3 {
            font-size: 16px;
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 14px;
            line-height: 1.6;
            color: var(--c-sub);
            margin: 0;
        }

        .split-feature {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            background: var(--c-dark);
            border-radius: 24px;
            overflow: hidden;
            color: #ffffff;
        }

        .split-feature .info-panel {
            padding: 48px 40px;
        }

        .split-feature .info-panel h2 {
            font-size: 28px;
            margin-bottom: 16px;
        }

        .info-panel p {
            color: #A6B1BB;
            font-size: 15px;
            line-height: 1.8;
        }

        .info-panel ul {
            margin-top: 18px;
            display: flex;
            flex-direction: column;
            gap: 14px;
            font-size: 14px;
        }

        .info-panel ul li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            color: #D6DDE3;
        }

        .info-panel i {
            color: var(--c-primary);
            margin-top: 6px;
            font-size: 13px;
        }

        .img-panel {
            min-height: 340px;
            position: relative;
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: flex-end;
        }

        .img-panel .img-note {
            background: rgba(16, 21, 27, 0.78);
            backdrop-filter: blur(5px);
            color: #fff;
            font-size: 13px;
            margin: 16px;
            padding: 10px 16px;
            border-radius: 10px;
            width: fit-content;
        }

        .info-groups-mixed {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .info-col-card {
            background: var(--c-card);
            border: 1px solid var(--c-line);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: box-shadow 200ms ease, border-color 200ms ease;
        }

        .info-col-card:hover {
            border-color: #CAD1D6;
            box-shadow: var(--shadow-soft);
        }

        .green-title {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .green-title::before {
            content: "";
            width: 5px;
            height: 18px;
            border-radius: 3px;
            background: var(--c-primary);
        }

        .small-row-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .small-row-item {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            font-size: 14px;
            border-bottom: 1px dashed #E8EBEE;
            padding-bottom: 12px;
        }

        .small-row-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .small-row-left {
            color: var(--c-ink);
            font-weight: 500;
            min-width: 0;
            padding-right: 12px;
        }

        .small-row-right {
            color: var(--c-sub);
            white-space: nowrap;
            font-size: 13px;
            background: #F2F4F5;
            padding: 2px 10px;
            border-radius: 999px;
        }

        .panel-list-tight {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .panel-list-tight a {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            padding: 9px 8px;
            border-radius: 8px;
            color: #3D4750;
        }

        .panel-list-tight a:hover {
            background: #F2F6F8;
            color: var(--c-primary-hover);
        }

        .panel-list-tight span {
            color: var(--c-sub);
            font-size: 12px;
        }

        .cta-banner {
            background: var(--c-primary);
            border-radius: 24px;
            padding: 48px 36px;
            color: white;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            position: relative;
            overflow: hidden;
            margin-top: 16px;
        }

        .cta-banner::after {
            content: "";
            position: absolute;
            right: -60px;
            top: -60px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }

        .cta-banner h3 {
            font-size: 28px;
            margin-bottom: 8px;
            font-weight: 650;
        }

        .cta-banner p {
            max-width: 530px;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.93);
        }

        .cta-btn-light {
            background: #fff;
            color: var(--c-primary-hover);
            padding: 13px 26px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.08);
            transition: all 200ms ease;
        }

        .cta-btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--c-card);
            border: 1px solid var(--c-line);
            border-radius: 14px;
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: border-color 180ms ease, box-shadow 180ms ease;
        }

        .faq-item summary {
            font-size: 16px;
            font-weight: 500;
            color: var(--c-ink);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            outline: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: "\f067";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 13px;
            color: var(--c-primary);
            transition: transform 180ms ease;
            flex: 0 0 auto;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
            color: var(--c-primary-hover);
        }

        .faq-item[open] {
            border-color: rgba(0, 168, 130, 0.3);
            box-shadow: none;
        }

        .faq-body {
            padding: 12px 22px 2px 0;
            color: var(--c-sub);
            font-size: 15px;
            line-height: 1.8;
        }

        .split-mid-line {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 14px;
        }

        .query-capsule {
            padding: 10px 18px;
            border-radius: 999px;
            background: #F2F5F6;
            font-size: 13px;
            border: 1px solid transparent;
        }

        .query-capsule:hover {
            border-color: var(--c-primary);
            background: #F0FAF7;
        }

        @media (max-width: 992px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }

            .focus-layout {
                grid-template-columns: 1fr;
            }

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

            .split-feature {
                grid-template-columns: 1fr;
            }

            .info-groups-mixed {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .cta-banner {
                flex-direction: column;
                align-items: flex-start;
            }

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

        @media (max-width: 640px) {
            body {
                font-size: 15px;
            }

            .section {
                padding: 56px 0;
            }

            .logo-text {
                font-size: 18px;
            }

            .brand-logo {
                font-size: 20px;
            }

            .header-live-note {
                display: none;
            }

            .header-tools {
                gap: 6px;
            }

            .tabchip {
                font-size: 13px;
                padding: 7px 14px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

            .section-title {
                font-size: 26px;
            }

            .section-sub {
                font-size: 15px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .split-feature .info-panel {
                padding: 28px 20px;
            }

            .img-panel {
                min-height: 240px;
            }

            .cta-banner {
                padding: 30px 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: left;
            }

            .hero-meta-strip {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category1 */
:root {
        --bg: #F6F7F8;
        --card: #FFFFFF;
        --ink: #14171B;
        --muted: #6B7681;
        --line: #E4E7EA;
        --dark: #10151B;
        --brand: #00A882;
        --brand-dark: #008F73;
        --brand-soft: #e3f4ef;
        --amber: #FFB52E;
        --radius: 14px;
        --shadow: 0 12px 30px rgba(16, 21, 27, .06);
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: "Inter", "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        background: var(--bg);
        color: var(--ink);
        line-height: 1.75;
        font-size: 16px;
        word-break: normal;
        overflow-wrap: break-word;
    }
    body, h1, h2, h3, h4, p, figure, blockquote, dl, dd {
        margin: 0;
    }
    * {
        box-sizing: border-box;
    }
    img {
        display: block;
        max-width: 100%;
        background: #EDF0F1;
    }
    a {
        color: inherit;
        text-decoration: none;
        transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
    }
    button {
        font-family: inherit;
        cursor: pointer;
        border: 0;
        background: none;
    }
    ::selection {
        background: rgba(0, 168, 130, .22);
    }
    :focus-visible {
        outline: 2px solid #00A882;
        outline-offset: 3px;
        border-radius: 6px;
    }
    .container {
        max-width: 1200px;
        margin-left: auto;
        margin-right: auto;
        padding-left: 24px;
        padding-right: 24px;
    }
    .section {
        padding: 72px 0;
    }
    .section-tight {
        padding: 56px 0;
    }
    .section-head {
        width: min(820px, 100%);
        margin-bottom: 42px;
    }
    .eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        letter-spacing: .04em;
        color: var(--brand-dark);
        font-weight: 600;
        padding: 6px 14px;
        border: 1px solid rgba(0, 168, 130, .25);
        background: rgba(0, 168, 130, .06);
        border-radius: 999px;
    }
    .section-h2 {
        font-size: clamp(26px, 3vw, 34px);
        line-height: 1.3;
        font-weight: 650;
        letter-spacing: -0.02em;
        margin-top: 14px;
    }
    .section-lead {
        font-size: 16px;
        margin-top: 14px;
        color: #56626e;
        max-width: 780px;
    }
    .header-main {
        display: flex;
        align-items: center;
        justify-content: space-between;
        min-height: 66px;
        gap: 18px;
    }
    .site-header {
        position: sticky;
        top: 0;
        z-index: 100;
        background: rgba(255, 255, 255, .86);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        transition: box-shadow .2s ease;
    }
    .site-header.scrolled {
        box-shadow: 0 6px 22px rgba(16, 21, 27, .06);
    }
    .site-header-nav {
        border-top: 1px solid #EDF0F1;
        background: rgba(250, 251, 251, .96);
    }
    .brand-logo {
        display: inline-flex;
        align-items: center;
        gap: 9px;
        font-size: 20px;
        font-weight: 700;
        color: var(--ink);
        letter-spacing: -0.02em;
    }
    .logo-dot {
        display: inline-block;
        width: 9px;
        height: 9px;
        border-radius: 4px;
        background: linear-gradient(135deg, #00A882 30%, #66d7b1 100%);
        box-shadow: 0 0 0 3px rgba(0, 168, 130, .12);
    }
    .logo-text {
        color: #10151B;
    }
    .header-live-note {
        display: inline-flex;
        align-items: center;
        gap: 7px;
        color: #56626e;
        font-size: 13px;
        padding: 5px 12px;
        border: 1px solid #E0E6E3;
        border-radius: 999px;
        background: #FAFCFB;
        white-space: nowrap;
    }
    .header-live-note .dot {
        display: inline-block;
        width: 7px;
        height: 7px;
        background: #00A882;
        border-radius: 50%;
        animation: pulse-dot 2s infinite;
    }
    @keyframes pulse-dot {
        0%, 100% { opacity: 1; transform: scale(.9); }
        50% { opacity: .55; transform: scale(1); }
    }
    .header-tools {
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        border-radius: 10px;
        border: 1px solid transparent;
        font-size: 15px;
        font-weight: 600;
        line-height: 1;
        height: 46px;
        padding: 0 20px;
        transition: background .2s ease, border-color .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease;
        white-space: nowrap;
    }
    .btn:active {
        transform: scale(.97);
    }
    .btn-primary {
        background: #00A882;
        color: #fff;
        border-color: #00A882;
        box-shadow: 0 8px 18px rgba(0, 168, 130, .16);
    }
    .btn-primary:hover {
        background: #008F73;
        border-color: #008F73;
        box-shadow: 0 10px 22px rgba(0, 143, 115, .20);
        transform: translateY(-1px);
    }
    .btn-sm {
        height: 38px;
        padding: 0 15px;
        border-radius: 8px;
        font-size: 14px;
    }
    .btn-lg {
        height: 54px;
        padding: 0 28px;
        border-radius: 10px;
        font-size: 16px;
    }
    .btn-outline-light {
        background: rgba(255, 255, 255, .04);
        color: #F4F7F9;
        border: 1px solid rgba(255, 255, 255, .28);
    }
    .btn-outline-light:hover {
        background: rgba(255, 255, 255, .12);
        border-color: rgba(255, 255, 255, .46);
    }
    .btn-ghost-dark {
        background: transparent;
        color: var(--ink);
        border-color: #D7DDE2;
    }
    .btn-ghost-dark:hover {
        background: #EEF3F2;
        border-color: #B8CFC7;
    }
    .tabnav {
        display: flex;
        align-items: center;
        gap: 6px;
        overflow-x: auto;
        white-space: nowrap;
        padding: 9px 0;
        scrollbar-width: none;
    }
    .tabnav::-webkit-scrollbar {
        display: none;
    }
    .tabchip {
        display: inline-flex;
        align-items: center;
        border-radius: 999px;
        padding: 7px 16px;
        font-size: 14px;
        font-weight: 500;
        color: #4D5862;
        background: transparent;
        border: 1px solid transparent;
        transition: background .2s ease, color .2s ease, box-shadow .2s ease;
    }
    .tabchip:hover {
        background: #e5f4ef;
        color: #006f58;
    }
    .tabchip.active {
        background: #10151B;
        color: #fff;
        font-weight: 600;
        box-shadow: 0 4px 10px rgba(16, 21, 27, .12);
    }
    .hero {
        position: relative;
        background:
            linear-gradient(105deg, rgba(12, 16, 19, .92) 0%, rgba(12, 16, 19, .84) 44%, rgba(12, 16, 19, .58) 100%),
            url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        color: #F4F7F9;
    }
    .hero-inner {
        display: grid;
        grid-template-columns: 1.04fr .96fr;
        gap: 56px;
        align-items: center;
        padding: 84px 0 76px;
    }
    .hero h1 {
        font-size: clamp(30px, 5vw, 58px);
        line-height: 1.24;
        font-weight: 700;
        letter-spacing: -0.03em;
        margin-top: 18px;
        text-wrap: balance;
    }
    .hero h1 span {
        color: #5fd4b2;
    }
    .hero-lead {
        margin-top: 18px;
        color: rgba(238, 244, 245, .82);
        font-size: 16px;
        line-height: 1.9;
        max-width: 620px;
    }
    .hero-note {
        display: flex;
        flex-wrap: wrap;
        gap: 8px 18px;
        margin-top: 22px;
        color: rgba(241, 245, 246, .64);
        font-size: 13px;
    }
    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        margin-top: 30px;
    }
    .hero-sync {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: rgba(240, 245, 246, .72);
        font-size: 13px;
        border: 1px solid rgba(255, 255, 255, .22);
        padding: 7px 13px;
        border-radius: 999px;
        background: rgba(255, 255, 255, .06);
    }
    .hero-sync .sync-dot {
        width: 7px;
        height: 7px;
        border-radius: 50%;
        background: #2fd6a8;
        display: inline-block;
        box-shadow: 0 0 0 4px rgba(47, 214, 168, .14);
    }
    .hero-visual {
        position: relative;
        border-radius: 18px;
        overflow: hidden;
        box-shadow: 0 28px 80px rgba(0, 0, 0, .36);
        border: 1px solid rgba(255, 255, 255, .16);
        background: #171d22;
    }
    .hero-visual img {
        width: 100%;
        height: auto;
        aspect-ratio: 16 / 10;
        object-fit: cover;
    }
    .visual-tag {
        position: absolute;
        top: 18px;
        left: 18px;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(9, 13, 17, .72);
        color: #fff;
        font-size: 13px;
        padding: 7px 12px;
        border-radius: 999px;
        backdrop-filter: blur(8px);
        z-index: 2;
    }
    .metrics-grid {
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 16px;
        margin-top: -32px;
        position: relative;
        z-index: 5;
    }
    .metric-cell {
        background: #fff;
        border-radius: 16px;
        border: 1px solid var(--line);
        padding: 22px 24px;
        box-shadow: var(--shadow);
    }
    .metric-cell strong {
        font-size: 34px;
        line-height: 1.15;
        font-weight: 700;
        letter-spacing: -0.04em;
        color: var(--ink);
    }
    .metric-cell .metric-sub {
        display: block;
        font-size: 14px;
        color: var(--muted);
        margin-top: 5px;
    }
    .live-banner {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 16px 24px;
        justify-content: space-between;
        background: #fff;
        border: 1px solid var(--line);
        border-radius: 16px;
        padding: 18px 22px;
        box-shadow: 0 4px 12px rgba(16, 21, 27, .03);
    }
    .live-banner .live-status {
        display: flex;
        align-items: center;
        gap: 10px;
        font-weight: 600;
        color: var(--ink);
        font-size: 15px;
    }
    .live-banner .live-status i {
        color: var(--brand);
    }
    .live-banner .note-text {
        color: var(--muted);
        font-size: 14px;
    }
    .white-panel {
        background: #fff;
        border: 1px solid var(--line);
        border-radius: 22px;
    }
    .channel-list {
        border-top: 1px solid #D9E2DF;
        border-bottom: 1px solid #D9E2DF;
    }
    .direction-row {
        display: grid;
        grid-template-columns: 120px minmax(0, 1fr) 180px;
        gap: 28px;
        align-items: center;
        border-bottom: 1px solid #EAEDED;
        padding: 26px 20px;
        background: rgba(255, 255, 255, .72);
        transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
    }
    .direction-row:last-child {
        border-bottom: 0;
    }
    .direction-row:hover {
        background: #fff;
        box-shadow: inset 4px 0 0 #00A882;
        transform: translateX(1px);
    }
    .direction-row .num {
        font-size: 42px;
        font-weight: 800;
        line-height: 1;
        letter-spacing: -0.06em;
        color: #BCD7D1;
        transition: color .2s ease;
    }
    .direction-row:hover .num {
        color: #00A882;
    }
    .direction-row h3 {
        font-size: 20px;
        font-weight: 650;
        line-height: 1.4;
        color: #14171B;
        transition: color .2s ease;
    }
    .direction-row h3 a:hover,
    .direction-row:hover h3 a {
        color: #008F73;
    }
    .direction-row p {
        margin-top: 7px;
        color: #65717c;
        font-size: 15px;
        line-height: 1.8;
        max-width: 680px;
    }
    .direction-meta {
        text-align: right;
    }
    .chip {
        display: inline-flex;
        align-items: center;
        gap: 5px;
        background: #F0F6F4;
        color: #236c5c;
        font-size: 13px;
        padding: 5px 10px;
        border-radius: 8px;
    }
    .chip-amber {
        background: #FFF4E2;
        color: #9D6B02;
    }
    .editorial-grid {
        display: grid;
        grid-template-columns: 1.05fr .95fr;
        gap: 56px;
        align-items: center;
    }
    .editorial-media {
        border-radius: 18px;
        overflow: hidden;
        box-shadow: 0 14px 40px rgba(16, 21, 27, .10);
        border: 1px solid #E5EAEA;
        background: #f1f3f4;
    }
    .editorial-media img {
        width: 100%;
        aspect-ratio: 16 / 10;
        object-fit: cover;
    }
    .step-list {
        margin-top: 24px;
    }
    .step-row {
        position: relative;
        padding: 0 0 28px 32px;
        border-left: 1px solid #CFDEDA;
        margin-left: 9px;
    }
    .step-row:last-child {
        padding-bottom: 4px;
        border-left-color: transparent;
    }
    .step-row::before {
        content: "";
        position: absolute;
        left: -7px;
        top: 8px;
        width: 13px;
        height: 13px;
        border-radius: 50%;
        background: #00A882;
        box-shadow: 0 0 0 4px rgba(0, 168, 130, .13);
    }
    .step-row .step-num {
        font-size: 13px;
        font-weight: 700;
        color: #00846b;
        letter-spacing: .04em;
    }
    .step-row h3 {
        font-size: 17px;
        font-weight: 600;
        color: #1b232b;
        margin-top: 6px;
    }
    .step-row p {
        margin-top: 5px;
        color: #67727d;
        font-size: 14px;
        line-height: 1.8;
    }
    .sync-clue {
        margin-top: 26px;
        display: flex;
        align-items: flex-start;
        gap: 12px;
        background: #EFF8F5;
        border: 1px solid #DCEFEA;
        border-radius: 14px;
        padding: 16px 18px;
        color: #325b52;
        font-size: 14px;
    }
    .sync-clue i {
        color: #00A882;
        margin-top: 3px;
    }
    .faq-list {
        max-width: 860px;
        margin: 0 auto;
    }
    .faq-item {
        background: #fff;
        border: 1px solid var(--line);
        border-radius: 16px;
        margin-bottom: 14px;
        padding: 4px 22px;
        transition: box-shadow .2s ease, border-color .2s ease;
    }
    .faq-item[open] {
        border-color: rgba(0, 168, 130, .45);
        box-shadow: 0 8px 18px rgba(16, 21, 27, .05);
    }
    .faq-item summary {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        cursor: pointer;
        padding: 18px 0;
        list-style: none;
        font-size: 16px;
        font-weight: 600;
        color: var(--ink);
    }
    .faq-item summary::-webkit-details-marker {
        display: none;
    }
    .faq-item summary .faq-toggle {
        position: relative;
        flex: 0 0 22px;
        width: 22px;
        height: 22px;
        border: 1px solid #D7E1DE;
        border-radius: 50%;
    }
    .faq-item summary .faq-toggle::before {
        content: "+";
        position: absolute;
        inset: 0;
        display: grid;
        place-items: center;
        color: var(--brand-dark);
        font-size: 17px;
        font-weight: 600;
        line-height: 1;
    }
    .faq-item[open] summary .faq-toggle::before {
        content: "−";
        color: #fff;
    }
    .faq-item[open] summary .faq-toggle {
        background: var(--brand);
        border-color: var(--brand);
    }
    .faq-item .answer {
        color: #5f6b76;
        font-size: 15px;
        padding-bottom: 20px;
        line-height: 1.85;
    }
    .download-area {
        background: linear-gradient(rgba(0,0,0,.76), rgba(0,0,0,.76)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        color: #F4F7F9;
    }
    .download-area .inner-cta {
        padding: 64px 0;
    }
    .cta-box {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .cta-box h2 {
        font-size: clamp(28px, 4vw, 40px);
        line-height: 1.3;
        font-weight: 700;
        letter-spacing: -0.03em;
        max-width: 760px;
        text-wrap: balance;
    }
    .cta-box p {
        color: rgba(240, 245, 246, .76);
        font-size: 16px;
        max-width: 600px;
        margin-top: 14px;
    }
    .cta-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        justify-content: center;
        margin-top: 30px;
    }
    .mini-info {
        margin-top: 20px;
        color: rgba(240, 245, 246, .54);
        font-size: 13px;
    }
    .footer {
        background: #10151B;
        color: #C6CDD3;
        padding: 64px 0 34px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.75fr .9fr .9fr;
        gap: 50px;
    }
    .footer-h4-title, .footer h4 {
        font-size: 15px;
        color: #fff;
        font-weight: 600;
        margin-bottom: 18px;
    }
    .footer ul {
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .footer ul li {
        margin-bottom: 12px;
    }
    .footer ul li a {
        color: #aeb7be;
        font-size: 14px;
    }
    .footer ul li a:hover {
        color: #2fd6a8;
    }
    .footer .badge {
        display: inline-flex;
        align-items: center;
        gap: 7px;
        background: rgba(255,255,255,.06);
        border: 1px solid rgba(255,255,255,.12);
        color: #cfd6db;
        border-radius: 999px;
        padding: 6px 12px;
        font-size: 13px;
    }
    .footer-brand-name {
        display: flex;
        align-items: center;
        gap: 9px;
        font-size: 22px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 10px;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,.12);
        margin-top: 48px;
        padding-top: 20px;
        display: flex;
        flex-wrap: wrap;
        gap: 8px 24px;
        justify-content: space-between;
        font-size: 13px;
        color: #859099;
    }
    .footer-bottom .copyright {
        color: #AAB3BB;
    }
    .reveal-load {
        opacity: 0;
        transform: translateY(10px);
        animation: revealUp .6s ease forwards;
    }
    @keyframes revealUp {
        to { opacity: 1; transform: translateY(0); }
    }
    @media (max-width: 1024px) {
        .hero-inner {
            grid-template-columns: 1fr;
            gap: 32px;
        }
        .hero-visual {
            max-width: 620px;
        }
        .metrics-grid {
            grid-template-columns: repeat(2, minmax(0, 1fr));
            margin-top: 12px;
        }
        .editorial-grid {
            grid-template-columns: 1fr;
        }
    }
    @media (max-width: 768px) {
        .section {
            padding: 52px 0;
        }
        .section-tight {
            padding: 40px 0;
        }
        .header-live-note {
            display: none;
        }
        .header-main {
            min-height: 60px;
        }
        .brand-logo {
            font-size: 18px;
        }
        .btn-sm {
            height: 34px;
            padding: 0 12px;
            font-size: 13px;
        }
        .btn-sm i {
            display: none;
        }
        .tabchip {
            padding: 6px 14px;
            font-size: 13px;
        }
        .hero-inner {
            padding: 52px 0 46px;
        }
        .hero-actions .btn {
            width: 100%;
        }
        .direction-row {
            grid-template-columns: 64px minmax(0, 1fr);
            padding: 22px 10px;
            gap: 15px;
        }
        .direction-row .direction-meta {
            text-align: left;
            grid-column: 2;
        }
        .direction-row .num {
            font-size: 34px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 36px;
        }
        .footer-bottom {
            flex-direction: column;
        }
    }
    @media (max-width: 520px) {
        .container {
            padding-left: 20px;
            padding-right: 20px;
        }
        .metrics-grid {
            grid-template-columns: 1fr;
            margin-top: 10px;
        }
        .faq-item {
            padding: 5px 16px;
        }
        .footer {
            padding-top: 44px;
        }
    }
    ::-webkit-scrollbar {
        width: 10px;
        height: 8px;
    }
    ::-webkit-scrollbar-track {
        background: #F0F2F2;
    }
    ::-webkit-scrollbar-thumb {
        background: #B6C0C4;
        border-radius: 8px;
        border: 2px solid #F0F2F2;
    }
    ::-webkit-scrollbar-thumb:hover {
        background: #84939a;
    }

/* roulang page: category3 */
:root {
            --bg: #F6F7F8;
            --card: #FFFFFF;
            --text: #14171B;
            --muted: #6B7681;
            --line: #E4E7EA;
            --dark: #10151B;
            --brand: #00A882;
            --brand-hover: #008F73;
            --brand-soft: #E2F4EF;
            --amber: #FFB52E;
            --radius-btn: 8px;
            --radius-card: 14px;
            --radius-img: 12px;
            --shadow: 0 10px 24px rgba(16, 21, 27, .06);
            --header-h: 108px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            padding-top: var(--header-h);
            background: var(--bg);
            color: var(--text);
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Inter, "SF Pro Display", -apple-system, BlinkMacSystemFont, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font-family: inherit;
            border: 0;
            background: none;
            cursor: pointer;
        }

        .site-header .container,
        .footer .container,
        main .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 640px) {

            .site-header .container,
            .footer .container,
            main .container {
                padding-left: 20px;
                padding-right: 20px;
            }
        }

        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: transparent;
        }
        ::-webkit-scrollbar-thumb {
            background: #C4C9CF;
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #9AA2AA;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 2px;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 60;
            background: rgba(255, 255, 255, .94);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid transparent;
            transition: border-color .2s, box-shadow .2s, background .2s;
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, .97);
            border-color: var(--line);
            box-shadow: 0 6px 20px rgba(16, 21, 27, .05);
        }

        .header-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 60px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            line-height: 1;
        }

        .logo-dot {
            display: inline-block;
            width: 12px;
            height: 12px;
            border-radius: 4px;
            background: var(--brand);
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 21px;
            font-weight: 800;
            letter-spacing: -0.2px;
        }

        .header-tools {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .header-live-note {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--muted);
            background: #F1F3F5;
            border-radius: 999px;
            padding: 6px 14px;
        }

        .header-live-note .dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--brand);
            box-shadow: 0 0 0 3px rgba(0, 168, 130, .14);
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 3px rgba(0, 168, 130, .14);
            }
            50% {
                box-shadow: 0 0 0 6px rgba(0, 168, 130, .08);
            }
        }

        .site-header-nav {
            border-top: 1px solid var(--line);
            background: rgba(255, 255, 255, .7);
        }

        .tabnav {
            display: flex;
            align-items: center;
            gap: 8px;
            overflow-x: auto;
            min-height: 46px;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .tabnav::-webkit-scrollbar {
            display: none;
        }

        .tabchip {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            white-space: nowrap;
            height: 32px;
            padding: 0 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: #5B646E;
            transition: background .2s, color .2s;
        }

        .tabchip:hover {
            background: #EEF2F3;
            color: var(--text);
        }

        .tabchip.active {
            background: var(--dark);
            color: #fff;
            font-weight: 600;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            border: 1px solid transparent;
            font-weight: 600;
            line-height: 1.4;
            transition: all .2s ease;
            cursor: pointer;
        }

        .btn:active {
            transform: scale(.98);
        }

        .btn-primary {
            background: var(--brand);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--brand-hover);
        }

        .btn-sm {
            height: 36px;
            padding: 0 16px;
            font-size: 14px;
        }

        .btn-lg {
            height: 52px;
            padding: 0 30px;
            font-size: 16px;
        }

        .btn-ghost-light {
            border-color: rgba(255, 255, 255, .5);
            color: #fff;
            background: rgba(255, 255, 255, .06);
        }

        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, .16);
            border-color: rgba(255, 255, 255, .8);
        }

        .page-hero {
            position: relative;
            padding: 86px 0 72px;
            background-color: var(--dark);
            background-size: cover;
            background-position: center;
            isolation: isolate;
            overflow: hidden;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            z-index: -1;
            background: linear-gradient(84deg, rgba(16, 21, 27, .95) 0%, rgba(16, 21, 27, .8) 56%, rgba(16, 21, 27, .42) 100%);
        }

        .hero-crumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, .62);
            margin-bottom: 24px;
        }

        .hero-crumb a:hover {
            color: #fff;
        }

        .page-eyebrow {
            display: inline-block;
            font-family: Inter, "SF Pro Display", sans-serif;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .14em;
            color: var(--brand);
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .page-hero h1 {
            font-size: 56px;
            line-height: 1.26;
            font-weight: 700;
            color: #fff;
            margin: 0 0 20px;
            letter-spacing: -1px;
        }

        .page-hero-lead {
            font-size: 17px;
            line-height: 1.9;
            color: rgba(255, 255, 255, .8);
            max-width: 680px;
            margin: 0 0 32px;
        }

        .hero-pillbar {
            display: flex;
            align-items: center;
            gap: 10px;
            border: 1px solid rgba(255, 255, 255, .16);
            border-radius: 999px;
            background: rgba(255, 255, 255, .05);
            padding: 6px 16px 6px 8px;
            margin-top: 34px;
            width: fit-content;
            font-size: 13px;
            color: rgba(255, 255, 255, .9);
        }

        .pill-icon {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--brand);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
        }

        .section {
            padding: 88px 0;
        }

        .section-alt {
            background: #fff;
        }

        .section-head {
            margin-bottom: 52px;
        }

        .split-head {
            display: flex;
            align-items: end;
            justify-content: space-between;
            gap: 40px;
        }

        .split-head .section-intro {
            max-width: 460px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.85;
            margin: 0;
        }

        .section-kicker {
            font-family: Inter, "SF Pro Display", sans-serif;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .14em;
            color: var(--brand);
            text-transform: uppercase;
            display: inline-block;
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: 32px;
            line-height: 1.35;
            font-weight: 700;
            margin: 0;
            letter-spacing: -0.4px;
        }

        .center-head {
            text-align: center;
        }

        .center-head h2 {
            margin-bottom: 12px;
        }

        .center-head .section-intro {
            max-width: 720px;
            margin: 0 auto;
            color: var(--muted);
            font-size: 16px;
        }

        .directory-wrap {
            margin-top: 12px;
        }

        .version-group {
            position: relative;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            padding: 42px 48px 20px;
            margin-bottom: 28px;
            overflow: hidden;
        }

        .prefix-mark {
            position: absolute;
            right: -6px;
            top: -40px;
            font-family: Inter, "SF Pro Display", sans-serif;
            font-size: 190px;
            font-weight: 800;
            line-height: 1;
            letter-spacing: -16px;
            color: rgba(16, 21, 27, .045);
            pointer-events: none;
            user-select: none;
        }

        .version-group-title {
            position: relative;
            display: flex;
            align-items: end;
            justify-content: space-between;
            gap: 24px;
            border-bottom: 1px dashed var(--line);
            padding-bottom: 18px;
            margin-bottom: 8px;
        }

        .group-title-copy h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 0 0 4px;
        }

        .group-title-copy p {
            margin: 0;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.7;
        }

        .file-row {
            position: relative;
            display: grid;
            grid-template-columns: 128px minmax(0, 1fr) auto;
            gap: 20px;
            align-items: center;
            padding: 16px 16px;
            margin: 0 -16px;
            border-bottom: 1px solid var(--line);
            transition: background .2s ease;
        }

        .file-row:last-child {
            border-bottom: 0;
        }

        .file-row:hover {
            background: #F4FAF8;
        }

        .file-name .ver-code {
            font-family: Inter, "SF Pro Display", monospace;
            font-weight: 700;
            font-size: 15px;
            white-space: nowrap;
        }

        .file-desc {
            margin: 0;
            color: var(--text);
            font-size: 15px;
            line-height: 1.65;
        }

        .file-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .file-date {
            color: var(--muted);
            font-size: 13px;
            font-family: Inter, "SF Pro Display", sans-serif;
        }

        .file-tag {
            display: inline-flex;
            align-items: center;
            border-radius: 5px;
            padding: 2px 9px;
            font-size: 12px;
            line-height: 1.7;
            font-weight: 600;
        }

        .tag-new {
            background: #E6F5F1;
            color: #0B7E63;
        }

        .tag-fix {
            background: #F7EFDF;
            color: #9A6112;
        }

        .tag-opt {
            background: #EDF0F2;
            color: #56616B;
        }

        .tag-beta {
            background: #EAF0FF;
            color: #3456B1;
        }

        .pick-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }

        .pick-media img {
            width: 100%;
            aspect-ratio: 16 / 11;
            object-fit: cover;
            border-radius: var(--radius-img);
            box-shadow: var(--shadow);
            background: #E9ECEE;
        }

        .pick-content .section-kicker {
            margin-top: 0;
        }

        .pick-list {
            list-style: none;
            margin: 26px 0 0;
            padding: 0;
        }

        .pick-list li {
            display: flex;
            gap: 13px;
            align-items: flex-start;
            padding: 13px 0;
            border-bottom: 1px solid var(--line);
        }

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

        .pick-list i {
            color: var(--brand);
            font-size: 14px;
            margin-top: 7px;
            width: 18px;
        }

        .pick-list b {
            display: block;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 2px;
        }

        .pick-list span {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.7;
        }

        .cta-bar {
            background: var(--dark);
            padding: 72px 0;
        }

        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 700;
            margin: 0 0 10px;
            letter-spacing: -0.3px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, .66);
            font-size: 15px;
            margin: 0;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        .faq-section .container {
            max-width: 880px;
        }

        .faq-list {
            margin-top: 40px;
            border-bottom: 1px solid var(--line);
        }

        .faq-item {
            border-top: 1px solid var(--line);
        }

        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
            padding: 22px 6px;
            text-align: left;
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            transition: color .2s;
        }

        .faq-q:hover {
            color: var(--brand-hover);
        }

        .faq-item.open .faq-q {
            color: var(--brand-hover);
        }

        .faq-icon {
            position: relative;
            width: 30px;
            height: 30px;
            flex: 0 0 30px;
            border: 1px solid var(--line);
            border-radius: 8px;
            background: #fff;
            flex-shrink: 0;
            transition: border-color .2s;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            background: var(--text);
            border-radius: 2px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            transition: all .22s ease;
        }

        .faq-icon::before {
            width: 12px;
            height: 2px;
        }

        .faq-icon::after {
            width: 2px;
            height: 12px;
        }

        .faq-item.open .faq-icon::after {
            transform: translate(-50%, -50%) scaleY(0);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .25s ease;
        }

        .faq-item.open .faq-a {
            max-height: 420px;
        }

        .faq-a-inner {
            padding: 0 52px 24px 6px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.9;
        }

        .footer {
            background: var(--dark);
            color: #A5ADB5;
            padding: 70px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 50px;
        }

        .footer-brand-name {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 18px;
        }

        .footer-brand-name .logo-dot {
            background: var(--brand);
        }

        .footer h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin: 0 0 16px;
        }

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

        .footer ul li {
            margin-bottom: 9px;
        }

        .footer ul a {
            color: #A5ADB5;
            font-size: 14px;
            transition: color .2s;
        }

        .footer ul a:hover {
            color: var(--brand);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border-radius: 6px;
            padding: 5px 12px;
            font-size: 13px;
            background: rgba(255, 255, 255, .08);
            color: #C7CED5;
        }

        .badge i {
            color: var(--brand);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding-top: 22px;
            font-size: 13px;
            color: #737D88;
            flex-wrap: wrap;
        }

        .copyright {
            color: #8A949E;
        }

        .reveal {
            opacity: 0;
            transform: translateY(10px);
            transition: opacity .45s ease, transform .45s ease;
        }

        .reveal.in {
            opacity: 1;
            transform: none;
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation: none !important;
                transition: none !important;
            }
        }

        @media (max-width: 1024px) {
            .page-hero h1 {
                font-size: 46px;
            }

            .version-group {
                padding: 34px 30px 16px;
            }

            .split-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .split-head .section-intro {
                max-width: 640px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 100px;
            }

            .header-main {
                min-height: 54px;
            }

            .logo-text {
                font-size: 18px;
            }

            .header-live-note {
                display: none;
            }

            .header-tools {
                gap: 10px;
            }

            .page-hero {
                padding: 62px 0 56px;
            }

            .page-hero h1 {
                font-size: 32px;
                letter-spacing: -0.6px;
            }

            .page-hero-lead {
                font-size: 15px;
            }

            .hero-pillbar {
                flex-wrap: wrap;
                border-radius: 14px;
                width: 100%;
                padding: 10px 14px;
            }

            .section {
                padding: 62px 0;
            }

            .section-head {
                margin-bottom: 36px;
            }

            .section-head h2 {
                font-size: 25px;
            }

            .version-group {
                border-radius: 12px;
                padding: 26px 20px 12px;
            }

            .prefix-mark {
                font-size: 118px;
                top: -18px;
                right: -2px;
            }

            .version-group-title {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }

            .file-row {
                grid-template-columns: 1fr;
                gap: 6px;
                padding: 16px 4px;
            }

            .file-meta {
                margin-top: 4px;
            }

            .pick-inner {
                grid-template-columns: 1fr;
                gap: 34px;
            }

            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-actions {
                width: 100%;
            }

            .cta-actions .btn {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .tabchip {
                height: 30px;
                padding: 0 14px;
                font-size: 13px;
            }

            .btn-sm {
                height: 34px;
                padding: 0 13px;
                font-size: 13px;
            }
        }