/* roulang page: index */
:root {
            --bg-top: #070D1A;
            --bg-secondary: #0C1626;
            --bg-lift: #132136;
            --glass-panel: rgba(20, 32, 50, 0.62);
            --glass-edge: rgba(140, 175, 230, 0.16);
            --text-main: #EAF0FB;
            --text-sub: #A6B6D0;
            --text-weak: #75869F;
            --func-blue: #4F8DFF;
            --func-cyan: #42D3D5;
            --func-amber: #FFB454;
            --func-green: #27E0A6;
            --func-red: #FF5C72;
            --radius-lg: 20px;
            --radius-md: 12px;
            --transition-base: all 0.25s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            background-color: var(--bg-top);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

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

        .container-main {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .text-gradient-blue {
            background: linear-gradient(135deg, #4F8DFF 0%, #42D3D5 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .text-gradient-amber {
            background: linear-gradient(135deg, #FFB454 0%, #FF8A50 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .glass-card {
            background: var(--glass-panel);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-edge);
            border-radius: var(--radius-lg);
        }

        .solid-card {
            background: var(--bg-lift);
            border: 1px solid rgba(140, 175, 230, 0.12);
            border-radius: var(--radius-lg);
        }

        .btn-primary {
            background: var(--func-amber);
            color: #0A0F1A;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            transition: var(--transition-base);
            display: inline-block;
            border: none;
            cursor: pointer;
            text-align: center;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(255, 180, 84, 0.45);
        }

        .btn-secondary {
            background: transparent;
            border: 1px solid rgba(79, 141, 255, 0.35);
            color: #B8D0F5;
            font-weight: 500;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            transition: var(--transition-base);
            display: inline-block;
            text-align: center;
        }

        .btn-secondary:hover {
            border-color: var(--func-blue);
            background: rgba(79, 141, 255, 0.12);
            box-shadow: 0 0 20px rgba(79, 141, 255, 0.15);
            transform: translateY(-2px);
        }

        .btn-green {
            background: linear-gradient(145deg, #27E0A6, #10C58A);
            color: #07211A;
            font-weight: 650;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            display: inline-block;
            text-align: center;
            box-shadow: 0 0 30px rgba(39, 224, 166, 0.2);
            transition: var(--transition-base);
        }

        .btn-green:hover {
            box-shadow: 0 0 44px rgba(39, 224, 166, 0.4);
            transform: translateY(-2px);
            color: #07211A;
        }

        .btn-blue {
            background: linear-gradient(145deg, #60A5FA, #3B82F6);
            color: #FFFFFF;
            font-weight: 650;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            display: inline-block;
            text-align: center;
            box-shadow: 0 0 30px rgba(96, 165, 250, 0.2);
            transition: var(--transition-base);
        }

        .btn-blue:hover {
            box-shadow: 0 0 44px rgba(96, 165, 250, 0.4);
            transform: translateY(-2px);
            color: #FFFFFF;
        }

        .badge-style {
            padding: 4px 14px;
            border-radius: 9999px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
            line-height: 1.4;
        }

        .section-title {
            font-size: clamp(1.4rem, 3vw, 2rem);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
        }

        .section-subtitle {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 40px;
        }

        .navmenu-item {
            padding: 8px 4px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            border-bottom: 2px solid transparent;
            margin: 0 12px;
            transition: var(--transition-base);
        }

        .navmenu-item:hover,
        .navmenu-item.active {
            color: var(--text-main);
            border-bottom-color: var(--func-amber);
        }

        .hamburger-icon {
            display: none;
            font-size: 24px;
            margin-left: auto;
            padding: 8px 12px;
            cursor: pointer;
            color: var(--text-main);
        }

        .mobile-menu {
            display: none;
            background: rgba(10, 16, 28, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(140, 175, 230, 0.10);
            padding: 12px 24px 20px 24px;
        }

        .mobile-menu a {
            display: block;
            padding: 16px 16px;
            font-size: 15px;
            color: var(--text-main);
            border-bottom: 1px solid rgba(234, 240, 251, 0.06);
        }

        .mobile-menu a:last-child {
            border-bottom: 0;
        }

        .mobile-menu a:hover {
            padding-left: 20px;
        }

        .hero-bg {
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 20%;
            position: relative;
        }

        .hero-bg::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(7, 13, 26, 0.86);
            backdrop-filter: blur(0px);
        }

        .hero-radiant {
            background:
                radial-gradient(ellipse 600px 340px at 18% 20%, rgba(79, 141, 255, 0.25), transparent 60%),
                radial-gradient(ellipse 480px 260px at 80% 70%, rgba(255, 180, 84, 0.12), transparent 60%),
                var(--bg-top);
        }

        .card-hover-effect:hover {
            transform: translateY(-6px);
            box-shadow: 0 18px 48px rgba(0, 0, 0, 0.35), inset 0 0 0 1px rgba(79, 141, 255, 0.25);
        }

        .status-dot::before {
            content: '';
            width: 10px;
            height: 10px;
            border-radius: 9999px;
            background: var(--func-green);
            display: inline-block;
            margin-right: 8px;
            box-shadow: 0 0 14px rgba(39, 224, 166, 0.6);
            animation: pulse-green 1.8s infinite;
        }

        @keyframes pulse-green {
            0% {
                opacity: 1;
            }
            50% {
                opacity: 0.6;
            }
            100% {
                opacity: 1;
            }
        }

        .stat-number {
            font-size: clamp(2rem, 4vw, 3.2rem);
            font-weight: 800;
            font-variant-numeric: tabular-nums;
            letter-spacing: 0.5px;
        }

        .faq-answer {
            display: none;
            padding-top: 16px;
            color: var(--text-sub);
            border-top: 1px solid rgba(140, 175, 230, 0.08);
            margin-top: 16px;
            font-size: 15px;
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        .faq-item .fa-plus-circle {
            transition: transform 0.3s ease;
        }

        .faq-item.open .fa-plus-circle {
            transform: rotate(45deg);
            color: var(--func-amber);
        }

        .form-input {
            width: 100%;
            background: rgba(10, 18, 32, 0.5);
            border: 1px solid rgba(140, 175, 230, 0.15);
            border-radius: 12px;
            padding: 14px 18px;
            color: var(--text-main);
            font-size: 15px;
            transition: var(--transition-base);
            outline: none;
        }

        .form-input:focus {
            border-color: rgba(255, 180, 84, 0.45);
            box-shadow: 0 0 0 3px rgba(255, 180, 84, 0.12);
            background: rgba(10, 18, 32, 0.68);
        }

        .form-input::placeholder {
            color: var(--text-weak);
        }

        .footer-link-item {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 2;
            transition: color 0.25s;
        }

        .footer-link-item:hover {
            color: var(--text-main);
        }

        .vertical-space-80 {
            padding: 90px 0;
        }

        .vertical-space-50 {
            padding: 60px 0;
        }

        .info-row:hover {
            background: rgba(79, 141, 255, 0.12);
        }

        card-item-news {
            border-bottom: 1px solid rgba(140, 175, 230, 0.07);
        }

        .glowtext-blue {
            text-shadow: 0 0 32px rgba(79, 141, 255, 0.25);
        }

        .divider-line {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(140, 175, 230, 0.15), transparent);
            border: 0;
        }

        .step-num {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            background: rgba(79, 141, 255, 0.15);
            color: var(--func-blue);
            border: 1px solid rgba(79, 141, 255, 0.24);
            line-height: 1;
        }

        .section-bg-2 {
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: vertical;
            position: relative;
        }

        .section-bg-2::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(7, 13, 26, 0.92);
        }

        .content-layer {
            position: relative;
            z-index: 2;
        }

        .service-tag {
            letter-spacing: 1px;
            font-size: 12px;
            text-transform: uppercase;
            color: var(--func-cyan);
            font-weight: 600;
            margin-bottom: 10px;
            display: inline-block;
        }

        .list-disc-custom li {
            position: relative;
            padding-left: 22px;
            margin-bottom: 10px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        .list-disc-custom li::before {
            content: '›';
            position: absolute;
            left: 4px;
            color: var(--func-cyan);
            font-size: 20px;
            font-weight: 700;
        }

        @media (max-width: 900px) {
            .navmenu-item,
            .nav-external-links {
                display: none;
            }
            .hamburger-icon {
                display: inline-block;
            }
            .vertical-space-80 {
                padding: 60px 0;
            }
            .logotext {
                font-size: 1.06rem;
            }
        }

        @media (max-width: 640px) {
            .hero-bg {
                background-position: 65% center;
            }
            .vertical-space-80 {
                padding: 48px 0;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #070D1A;
            --bg-sec: #0C1626;
            --bg-card: #132136;
            --glass-panel: rgba(20, 32, 50, 0.62);
            --glass-border: rgba(140, 175, 230, 0.16);
            --main-text: #EAF0FB;
            --sub-text: #A6B6D0;
            --weak-text: #75869F;
            --blue: #4F8DFF;
            --cyan: #42D3D5;
            --amber: #FFB454;
            --green: #27E0A6;
            --danger: #FF5C72;
            --radius-lg: 20px;
            --radius-sm: 12px;
            --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.22);
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

        p,
        h1,
        h2,
        h3,
        ul,
        ol,
        figure {
            margin: 0;
            padding: 0;
        }

        ul,
        ol {
            list-style: none;
        }

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

        .container-main {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .top-info {
            background: rgba(7, 13, 26, 0.72);
            border-bottom: 1px solid rgba(140, 175, 230, 0.08);
            font-size: 13px;
            color: var(--sub-text);
            min-height: 36px;
        }

        .top-info .top-info-row {
            min-height: 36px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .top-info a {
            color: var(--sub-text);
            transition: color 0.2s;
        }

        .top-info a:hover {
            color: var(--amber);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(7, 13, 26, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(140, 175, 230, 0.12);
        }

        .site-header-inner {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            flex: 0 0 auto;
        }

        .brand-badge {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            font-size: 18px;
            background: linear-gradient(145deg, rgba(79, 141, 255, 0.25), rgba(66, 211, 213, 0.12));
            border: 1px solid rgba(79, 141, 255, 0.22);
            color: var(--cyan);
            flex: 0 0 auto;
        }

        .brand-text {
            color: var(--main-text);
            font-weight: 800;
            font-size: 20px;
            letter-spacing: 0.01em;
            line-height: 1.15;
            white-space: nowrap;
        }

        .brand-text span {
            color: var(--amber);
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .navmenu-item {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 38px;
            padding: 0 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--sub-text);
            border-radius: 10px;
            position: relative;
            transition: color 0.2s, background 0.2s;
            white-space: nowrap;
        }

        .navmenu-item:hover {
            color: var(--main-text);
            background: rgba(140, 175, 230, 0.06);
        }

        .navmenu-item.active {
            color: #ffffff;
        }

        .navmenu-item.active::after {
            content: "";
            position: absolute;
            left: 12px;
            right: 12px;
            bottom: 4px;
            height: 2px;
            border-radius: 999px;
            background: linear-gradient(90deg, rgba(79, 141, 255, 0.9), rgba(66, 211, 213, 0.8));
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--amber);
            color: #1b1206;
            font-weight: 800;
            border: 0;
            outline: none;
            border-radius: 12px;
            padding: 11px 26px;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
            line-height: 1.2;
            box-shadow: 0 0 0 1px rgba(255, 180, 84, 0.3), 0 10px 26px rgba(255, 180, 84, 0.15);
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: #ffc26e;
            transform: translateY(-2px);
            box-shadow: 0 0 0 1px rgba(255, 180, 84, 0.45), 0 14px 30px rgba(255, 180, 84, 0.2);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--amber);
            outline-offset: 3px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #BFD2F0;
            font-weight: 600;
            border: 1px solid rgba(140, 175, 230, 0.35);
            border-radius: 12px;
            padding: 11px 26px;
            cursor: pointer;
            transition: all 0.2s;
            line-height: 1.2;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            color: #fff;
            background: rgba(140, 175, 230, 0.08);
            border-color: rgba(140, 175, 230, 0.55);
            transform: translateY(-2px);
        }

        .hamburger-icon {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            color: var(--main-text);
            background: rgba(140, 175, 230, 0.08);
            border: 1px solid rgba(140, 175, 230, 0.14);
            border-radius: 12px;
            font-size: 18px;
            cursor: pointer;
            margin-left: 8px;
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            background: rgba(7, 13, 26, 0.96);
            border-top: 1px solid rgba(140, 175, 230, 0.12);
            padding: 12px 16px 18px;
        }

        .mobile-menu a {
            display: flex;
            align-items: center;
            min-height: 46px;
            font-size: 16px;
            font-weight: 500;
            border-radius: 10px;
            padding: 0 14px;
            color: var(--sub-text);
        }

        .mobile-menu a:hover {
            color: #fff;
            background: rgba(140, 175, 230, 0.06);
        }

        .mobile-menu.open {
            display: flex;
        }

        .section-pad {
            padding: 96px 0;
        }

        .page-hero {
            position: relative;
            padding: 84px 0 76px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-position: right 12% center;
            background-size: cover;
            background-repeat: no-repeat;
            border-bottom: 1px solid rgba(140, 175, 230, 0.12);
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(900px 420px at 85% 10%, rgba(28, 58, 94, 0.52), transparent 70%), linear-gradient(96deg, rgba(7, 13, 26, 0.9) 26%, rgba(7, 13, 26, 0.68) 66%, rgba(7, 13, 26, 0.75) 100%);
            pointer-events: none;
        }

        .page-hero .container-main {
            position: relative;
            z-index: 2;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 360px;
            gap: 64px;
            align-items: center;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--weak-text);
            margin-bottom: 26px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--sub-text);
        }

        .breadcrumb a:hover {
            color: var(--cyan);
        }

        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 15px;
            border-radius: 999px;
            background: rgba(79, 141, 255, 0.1);
            border: 1px solid rgba(79, 141, 255, 0.28);
            color: #AFC8F0;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .page-hero h1 {
            font-size: clamp(38px, 5.4vw, 60px);
            line-height: 1.18;
            font-weight: 800;
            letter-spacing: 0.01em;
            color: #ffffff;
        }

        .page-hero h1 .accent {
            color: var(--amber);
        }

        .hero-lead {
            max-width: 680px;
            margin-top: 24px;
            font-size: 17px;
            line-height: 1.9;
            color: var(--sub-text);
        }

        .hero-actions {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 34px;
        }

        .hero-panel {
            background: var(--glass-panel);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: 24px;
            padding: 28px;
            box-shadow: var(--shadow-card);
        }

        .status-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 20px;
        }

        .status-title {
            font-size: 16px;
            font-weight: 700;
            color: #eef3ff;
        }

        .status-pill {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 5px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            color: #E8FFF7;
            background: rgba(39, 224, 166, 0.1);
            border: 1px solid rgba(39, 224, 166, 0.22);
        }

        .status-pill::before {
            content: "";
            width: 6px;
            height: 6px;
            background: var(--green);
            border-radius: 50%;
            box-shadow: 0 0 10px var(--green);
            animation: pulse-green 1.8s infinite;
        }

        @keyframes pulse-green {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.5;
            }
        }

        .hero-panel-line {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-top: 1px solid rgba(140, 175, 230, 0.1);
            font-size: 14px;
            color: var(--sub-text);
        }

        .hero-panel-icon {
            flex: 0 0 auto;
            width: 30px;
            height: 30px;
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(79, 141, 255, 0.12);
            color: var(--cyan);
            font-size: 13px;
        }

        .hero-panel-go {
            margin-top: 24px;
        }

        .hero-panel-go .btn-primary {
            width: 100%;
            padding: 13px 18px;
        }

        .section-heading-wrap {
            max-width: 820px;
            margin-bottom: 44px;
        }

        .kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--cyan);
            font-weight: 700;
            font-size: 13px;
            letter-spacing: 0.08em;
            margin-bottom: 12px;
        }

        .kicker::before {
            content: "";
            width: 18px;
            height: 2px;
            background: linear-gradient(90deg, rgba(66, 211, 213, 0.7), rgba(66, 211, 213, 0));
        }

        .section-heading {
            font-size: 30px;
            line-height: 1.35;
            font-weight: 800;
            color: #ffffff;
        }

        .section-heading em {
            font-style: normal;
            color: var(--amber);
        }

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

        .go-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--cyan);
        }

        .go-link:hover {
            color: var(--amber);
        }

        .timeline-section {
            background: linear-gradient(180deg, rgba(7, 13, 26, 0.6), rgba(12, 22, 38, 0.3));
        }

        .timeline-list {
            position: relative;
            margin-top: 16px;
        }

        .timeline-list::before {
            content: "";
            position: absolute;
            top: 10px;
            bottom: 18px;
            left: 160px;
            width: 1px;
            background: linear-gradient(180deg, rgba(79, 141, 255, 0.55), rgba(140, 175, 230, 0.1));
        }

        .timeline-row {
            position: relative;
            display: grid;
            grid-template-columns: 162px 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }

        .timeline-num {
            position: relative;
            padding-top: 14px;
            text-align: right;
        }

        .timeline-dot {
            position: absolute;
            right: -7px;
            top: 19px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #0c1626;
            border: 2px solid var(--amber);
            box-shadow: 0 0 0 4px rgba(255, 180, 84, 0.16), 0 0 14px rgba(255, 180, 84, 0.45);
        }

        .timeline-dot.blue-dot {
            border-color: var(--cyan);
            box-shadow: 0 0 0 4px rgba(66, 211, 213, 0.14), 0 0 14px rgba(66, 211, 213, 0.35);
        }

        .timeline-date-year {
            font-size: 12px;
            color: var(--weak-text);
            letter-spacing: 0.12em;
        }

        .timeline-date-big {
            display: block;
            font-size: 30px;
            font-weight: 800;
            line-height: 1.2;
            color: #ffffff;
        }

        .timeline-date-week {
            display: block;
            margin-top: 4px;
            font-size: 13px;
            color: var(--weak-text);
        }

        .timeline-card {
            background: rgba(17, 28, 45, 0.72);
            border: 1px solid rgba(140, 175, 230, 0.12);
            border-radius: 18px;
            overflow: hidden;
            transition: transform 0.26s ease, border-color 0.26s, box-shadow 0.26s;
            position: relative;
        }

        .timeline-card:hover {
            transform: translateY(-4px);
            border-color: rgba(140, 175, 230, 0.28);
            box-shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
        }

        .timeline-card-inner {
            display: grid;
            grid-template-columns: 150px minmax(0, 1fr);
            min-height: 150px;
        }

        .timeline-thumb {
            overflow: hidden;
            min-height: 150px;
        }

        .timeline-thumb img {
            width: 100%;
            height: 100%;
            min-height: 150px;
        }

        .timeline-brand-line {
            padding: 22px 24px 24px;
        }

        .timeline-tags {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 12px;
        }

        .chip {
            display: inline-flex;
            align-items: center;
            padding: 4px 11px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            line-height: 1.5;
            background: rgba(79, 141, 255, 0.1);
            border: 1px solid rgba(79, 141, 255, 0.24);
            color: #BFD6FF;
        }

        .chip.amber {
            background: rgba(255, 180, 84, 0.07);
            border-color: rgba(255, 180, 84, 0.2);
            color: #FFD2A0;
        }

        .timeline-title {
            font-size: 20px;
            font-weight: 800;
            line-height: 1.45;
            color: #ffffff;
        }

        .timeline-title:hover {
            color: #bfe0ff;
        }

        .timeline-desc {
            margin-top: 10px;
            color: var(--sub-text);
            font-size: 14px;
            line-height: 1.75;
        }

        .timeline-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px 20px;
            margin-top: 18px;
            font-size: 13px;
            color: var(--weak-text);
        }

        .timeline-meta i {
            color: var(--cyan);
            margin-right: 6px;
        }

        .timeline-link {
            margin-left: auto;
            color: var(--amber);
            font-weight: 700;
            font-size: 14px;
        }

        .timeline-link i {
            transition: transform 0.2s;
            margin-left: 4px;
        }

        .timeline-link:hover i {
            transform: translateX(4px);
        }

        .service-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 24px;
        }

        .service-tile {
            background: rgba(16, 27, 43, 0.72);
            border: 1px solid rgba(140, 175, 230, 0.13);
            border-radius: 20px;
            padding: 30px;
            display: flex;
            gap: 20px;
            transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
            position: relative;
            overflow: hidden;
        }

        .service-tile:hover {
            transform: translateY(-5px);
            border-color: rgba(79, 141, 255, 0.4);
            box-shadow: 0 20px 34px rgba(0, 0, 0, 0.24);
        }

        .service-tile-icon {
            flex: 0 0 auto;
            width: 52px;
            height: 52px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            background: rgba(79, 141, 255, 0.1);
            border: 1px solid rgba(79, 141, 255, 0.2);
            color: var(--cyan);
        }

        .service-tile:nth-child(2) .service-tile-icon {
            background: rgba(255, 180, 84, 0.09);
            border-color: rgba(255, 180, 84, 0.2);
            color: var(--amber);
        }

        .service-tile h3 {
            font-size: 17px;
            font-weight: 750;
            color: #ffffff;
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .service-tile p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.75;
        }

        .service-list {
            margin-top: 14px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .service-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 13px;
            color: #a9bad3;
        }

        .service-list li i {
            color: var(--green);
            margin-top: 4px;
            font-size: 12px;
        }

        .method-panel {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .soft-bg-number {
            font-size: 13px;
            color: var(--cyan);
            font-weight: 800;
            letter-spacing: 0.1em;
        }

        .method-item {
            background: linear-gradient(145deg, rgba(18, 30, 48, 0.75), rgba(12, 22, 38, 0.36));
            border: 1px solid rgba(140, 175, 230, 0.13);
            border-radius: 18px;
            padding: 26px;
            transition: border-color 0.2s;
        }

        .method-item:hover {
            border-color: rgba(140, 175, 230, 0.32);
        }

        .method-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin: 8px 0 10px;
        }

        .method-item p {
            color: var(--sub-text);
            font-size: 14px;
        }

        .process-wrap {
            border-radius: 24px;
            background: rgba(7, 13, 26, 0.2);
            border: 1px solid rgba(140, 175, 230, 0.1);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 0;
            counter-reset: step;
        }

        .process-cell {
            position: relative;
            padding: 34px 24px 34px;
            border-right: 1px solid rgba(140, 175, 230, 0.1);
        }

        .process-cell:last-child {
            border-right: 0;
        }

        .step-index {
            width: 46px;
            height: 46px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-size: 18px;
            font-weight: 800;
            color: var(--amber);
            background: rgba(255, 180, 84, 0.08);
            border: 1px solid rgba(255, 180, 84, 0.28);
            margin-bottom: 14px;
        }

        .step-index.cyan {
            color: var(--cyan);
            background: rgba(66, 211, 213, 0.06);
            border-color: rgba(66, 211, 213, 0.25);
        }

        .process-cell h3 {
            font-size: 16px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 8px;
        }

        .process-cell p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.7;
        }

        .faq-box {
            border: 1px solid rgba(140, 175, 230, 0.14);
            border-radius: 18px;
            background: rgba(14, 25, 40, 0.6);
            overflow: hidden;
            transition: border-color 0.2s;
            margin-bottom: 14px;
        }

        .faq-box[open] {
            border-color: rgba(66, 211, 213, 0.3);
        }

        .faq-box summary {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 22px;
            cursor: pointer;
            list-style: none;
            user-select: none;
        }

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

        .faq-number {
            width: 30px;
            height: 30px;
            border-radius: 10px;
            flex: 0 0 auto;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 800;
            color: var(--amber);
            background: rgba(255, 180, 84, 0.09);
            border: 1px solid rgba(255, 180, 84, 0.18);
        }

        .faq-q-text {
            flex: 1;
            font-size: 16px;
            font-weight: 700;
            color: #ffffff;
            line-height: 1.5;
        }

        .faq-chevron {
            color: var(--weak-text);
            font-size: 13px;
            transition: transform 0.25s;
        }

        .faq-box[open] .faq-chevron {
            transform: rotate(180deg);
            color: var(--amber);
        }

        .faq-answer {
            padding: 0px 22px 20px 66px;
            color: var(--sub-text);
            font-size: 14px;
            line-height: 1.85;
        }

        .cta-glass {
            position: relative;
            border-radius: 26px;
            background: linear-gradient(130deg, rgba(18, 32, 51, 0.96), rgba(9, 18, 33, 0.96));
            border: 1px solid rgba(140, 175, 230, 0.22);
            overflow: hidden;
            padding: 48px 48px 46px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
        }

        .cta-glass::before {
            content: "";
            position: absolute;
            width: 420px;
            height: 420px;
            right: -160px;
            top: -180px;
            background: radial-gradient(circle, rgba(79, 141, 255, 0.18), transparent 68%);
            pointer-events: none;
        }

        .cta-glass::after {
            content: "";
            position: absolute;
            width: 240px;
            height: 240px;
            left: 44%;
            bottom: -150px;
            background: radial-gradient(circle, rgba(255, 180, 84, 0.1), transparent 68%);
            pointer-events: none;
        }

        .cta-copy {
            position: relative;
            z-index: 1;
            flex: 1;
        }

        .cta-copy h2 {
            font-size: 27px;
            line-height: 1.4;
            font-weight: 800;
            color: #ffffff;
        }

        .cta-copy h2 span {
            color: var(--amber);
        }

        .cta-copy p {
            margin-top: 12px;
            color: var(--sub-text);
            max-width: 720px;
            font-size: 15px;
        }

        .cta-buttons {
            position: relative;
            z-index: 1;
            flex: 0 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer {
            border-top: 1px solid rgba(140, 175, 230, 0.1);
            background: linear-gradient(180deg, rgba(7, 13, 26, 0.35), rgba(12, 22, 38, 0.78));
            padding-top: 62px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 4fr 2fr 3fr;
            gap: 48px;
            padding-bottom: 42px;
        }

        .footer-brand p {
            color: var(--sub-text);
            font-size: 14px;
            line-height: 1.8;
            margin-top: 18px;
            max-width: 400px;
        }

        .social-row {
            display: flex;
            gap: 12px;
            margin-top: 18px;
        }

        .social-link {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(140, 175, 230, 0.07);
            border: 1px solid rgba(140, 175, 230, 0.13);
            color: var(--sub-text);
            transition: border-color 0.2s, color 0.2s, transform 0.2s;
        }

        .social-link:hover {
            color: var(--amber);
            border-color: rgba(255, 180, 84, 0.35);
            transform: translateY(-3px);
        }

        .footer-heading {
            font-size: 14px;
            font-weight: 700;
            color: #D8E4F6;
            letter-spacing: 0.06em;
            margin-bottom: 18px;
        }

        .footer-nav-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-link-item {
            color: #8FA2BE;
            font-size: 14px;
            transition: color 0.2s, padding-left 0.2s;
        }

        .footer-link-item:hover {
            color: var(--amber);
            padding-left: 4px;
        }

        .footer-note {
            background: rgba(7, 13, 26, 0.7);
            border-top: 1px solid rgba(140, 175, 230, 0.08);
            padding: 20px 0;
        }

        .footer-bottom-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--weak-text);
        }

        @media (max-width: 1024px) {
            .desktop-nav {
                display: none;
            }

            .hamburger-icon {
                display: inline-flex;
            }

            .hero-grid {
                grid-template-columns: minmax(0, 1fr);
                gap: 44px;
            }

            .page-hero {
                padding: 66px 0 62px;
            }

            .process-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }

            .process-cell:nth-child(2) {
                border-right: 0;
            }

            .process-cell:nth-child(1),
            .process-cell:nth-child(2) {
                border-bottom: 1px solid rgba(140, 175, 230, 0.1);
            }

            .cta-glass {
                flex-direction: column;
                padding: 38px 28px;
                align-items: flex-start;
                gap: 24px;
            }

            .cta-buttons {
                flex-direction: row;
                gap: 12px;
                flex-wrap: wrap;
            }
        }

        @media (max-width: 768px) {
            .container-main {
                padding: 0 16px;
            }

            .section-pad {
                padding: 60px 0;
            }

            .top-info .top-info-row {
                padding: 5px 0;
                justify-content: center;
                text-align: center;
                font-size: 12px;
            }

            .top-info .top-right {
                display: none;
            }

            .site-header-inner {
                height: 64px;
            }

            .brand-text {
                font-size: 17px;
            }

            .brand-badge {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }

            .hero-grid {
                gap: 30px;
            }

            .page-hero h1 {
                font-size: 36px;
                line-height: 1.25;
            }

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

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
            }

            .page-hero {
                padding: 46px 0 48px;
            }

            .section-heading-wrap {
                margin-bottom: 28px;
            }

            .section-heading {
                font-size: 24px;
                line-height: 1.45;
            }

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

            .timeline-list::before {
                display: none;
            }

            .timeline-row {
                display: block;
                padding-bottom: 28px;
            }

            .timeline-num {
                display: flex;
                align-items: baseline;
                justify-content: flex-start;
                gap: 10px;
                padding: 0 0 10px;
                text-align: left;
            }

            .timeline-dot {
                position: relative;
                right: auto;
                top: auto;
                width: 9px;
                height: 9px;
                order: 3;
                margin-left: 4px;
            }

            .timeline-date-big {
                font-size: 22px;
            }

            .timeline-card-inner {
                display: grid;
                grid-template-columns: 1fr;
            }

            .timeline-thumb {
                max-height: 180px;
                min-height: 0;
            }

            .timeline-thumb img {
                min-height: 0;
                max-height: 180px;
            }

            .timeline-brand-line {
                padding: 18px 18px 20px;
            }

            .timeline-title {
                font-size: 18px;
            }

            .timeline-link {
                margin-left: 0;
                display: inline-flex;
                width: 100%;
                margin-top: 10px;
            }

            .service-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .service-tile {
                padding: 24px;
                display: block;
            }

            .service-tile-icon {
                margin-bottom: 16px;
            }

            .method-panel {
                grid-template-columns: 1fr;
            }

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

            .process-cell {
                border-right: 0;
                border-bottom: 1px solid rgba(140, 175, 230, 0.1);
                padding: 26px 18px;
            }

            .process-cell:last-child {
                border-bottom: 0;
            }

            .faq-answer {
                padding-left: 22px;
            }

            .cta-glass {
                padding: 32px 20px;
                border-radius: 20px;
            }

            .cta-copy h2 {
                font-size: 23px;
            }

            .cta-buttons .btn-primary,
            .cta-buttons .btn-secondary {
                width: 100%;
                justify-content: center;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 34px;
                padding-bottom: 30px;
            }

            .footer-bottom-wrap {
                justify-content: center;
                text-align: center;
            }
        }

/* roulang page: article */
:root {
    --bg-deep: #070D1A;
    --bg-2: #0C1626;
    --bg-3: #132136;
    --danger: #FF5C72;
    --glass: rgba(20, 32, 50, 0.62);
    --glass-edge: rgba(140, 175, 230, 0.16);
    --colour: #EAF0FB;
    --text-sub: #A6B6D0;
    --textweak: #75869F;
    --info: #4F8DFF;
    --cyan: #42D3D5;
    --amber: #FFB454;
    --green: #27E0A6;
    --radius-lg: 22px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --shadow-card: 0 14px 40px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 40px rgba(79, 141, 255, 0.15);
    --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    background-color: var(--bg-deep);
    background-image:
        radial-gradient(1100px 460px at 88% -8%, rgba(79, 141, 255, 0.09), transparent 60%),
        radial-gradient(720px 420px at -12% 14%, rgba(255, 180, 84, 0.05), transparent 55%),
        linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-deep) 100%);
    background-repeat: no-repeat;
    color: var(--colour);
    font-family: var(--font-cn);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
img {
    max-width: 100%;
    display: block;
}
button, input, textarea {
    font-family: inherit;
    font-size: inherit;
    border: 0;
    outline: none;
}
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--amber);
    outline-offset: 3px;
}
.container-main {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}
section {
    scroll-margin-top: 110px;
}

/* header & nav */
.site-header {
    background: rgba(7, 13, 26, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(140, 175, 230, 0.12);
    position: sticky;
    top: 0;
    z-index: 99;
}
.navmenu-item {
    display: inline-flex;
    align-items: center;
    padding: 8px 13px;
    margin-left: 4px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-sub);
    border-radius: 10px;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
    transition: color 0.2s ease, background 0.2s ease;
}
.navmenu-item:hover {
    color: var(--colour);
    background: rgba(79, 141, 255, 0.08);
}
.navmenu-item.active {
    color: var(--colour);
    border-bottom-color: var(--amber);
}
.hamburger-icon {
    display: inline-flex;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    margin-left: 12px;
    border-radius: 10px;
    background: rgba(140, 175, 230, 0.08);
    border: 1px solid var(--glass-edge);
    color: var(--text-sub);
    cursor: pointer;
    transition: all 0.2s ease;
}
.hamburger-icon:hover {
    color: var(--amber);
    border-color: rgba(255, 180, 84, 0.35);
}
.mobile-menu {
    display: none;
    background: rgba(10, 18, 33, 0.96);
    backdrop-filter: blur(16px);
    border-top: 1px solid rgba(140, 175, 230, 0.1);
    padding: 10px 24px 20px;
}
.mobile-menu.show {
    display: block;
}
.mobile-menu a {
    display: block;
    padding: 12px 8px;
    font-size: 16px;
    color: var(--text-sub);
    border-bottom: 1px solid rgba(140, 175, 230, 0.07);
}
.mobile-menu a:hover {
    color: var(--amber);
}

/* buttons & tags */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--amber);
    border-radius: 12px;
    font-weight: 700;
    color: #0B1424;
    padding: 11px 28px;
    font-size: 15px;
    line-height: 1.3;
    border: 1px solid transparent;
    box-shadow: 0 0 24px rgba(255, 180, 84, 0.22);
    transition: all 0.22s ease;
    white-space: nowrap;
}
.btn-primary:hover {
    background: #ffc26b;
    box-shadow: 0 0 34px rgba(255, 180, 84, 0.38);
    transform: translateY(-2px);
    color: #0B1424;
}
.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--glass-edge);
    background: rgba(140, 175, 230, 0.08);
    color: #CBD9EF;
    border-radius: 12px;
    padding: 10px 24px;
    font-weight: 600;
    font-size: 15px;
}
.btn-outline:hover {
    border-color: rgba(79, 141, 255, 0.45);
    color: var(--colour);
    background: rgba(79, 141, 255, 0.1);
}
.btn-ghost {
    display: inline-flex;
    align-items: center;
    color: var(--cyan);
    font-size: 15px;
    font-weight: 600;
    gap: 6px;
}
.btn-ghost:hover {
    color: var(--amber);
}
.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(140, 175, 230, 0.09);
    border: 1px solid var(--glass-edge);
    color: var(--text-sub);
    transition: all 0.2s ease;
}
.icon-btn:hover {
    color: var(--cyan);
    border-color: rgba(66, 211, 213, 0.35);
    background: rgba(66, 211, 213, 0.08);
}

.badge-cat {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    font-size: 13px;
    font-weight: 600;
    border-radius: 999px;
    background: rgba(79, 141, 255, 0.14);
    border: 1px solid rgba(79, 141, 255, 0.26);
    color: #A8C4FF;
    letter-spacing: 0.2px;
}
.tag-pill {
    display: inline-block;
    padding: 5px 13px;
    border-radius: 999px;
    background: rgba(140, 175, 230, 0.08);
    border: 1px solid var(--glass-edge);
    color: var(--text-sub);
    font-size: 13px;
}
.tag-pill:hover {
    color: var(--cyan);
    border-color: rgba(66, 211, 213, 0.3);
}

/* post hero */
.post-hero {
    position: relative;
    margin-bottom: 56px;
    background: linear-gradient(0deg, rgba(7, 13, 26, 0.82), rgba(7, 13, 26, 0.72)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    border-bottom: 1px solid var(--glass-edge);
    overflow: hidden;
}
.post-hero-inner {
    position: relative;
    padding: 76px 0 64px;
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
}
.post-hero-inner::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(79, 141, 255, 0.13), transparent 65%);
    pointer-events: none;
}
.breadcrumb-wrap {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    font-size: 14px;
    color: var(--text-sub);
    margin-bottom: 28px;
    gap: 8px;
}
.crumb {
    color: var(--text-sub);
}
.crumb a {
    color: var(--textsub);
}
.crumb a:hover {
    color: var(--amber);
}
.crumb-sep {
    color: var(--textweak);
    font-size: 12px;
}
.post-hero h1 {
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.3;
    font-weight: 800;
    max-width: 1000px;
    letter-spacing: 0.5px;
    margin-bottom: 22px;
    color: var(--colour);
}
.post-meta-wrap {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    color: var(--text-sub);
    font-size: 15px;
    margin-bottom: 26px;
}
.post-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}
.post-meta-item i {
    color: var(--cyan);
}
.post-summary {
    font-size: 16.5px;
    max-width: 820px;
    color: #C2D2E8;
    background: rgba(9, 18, 34, 0.52);
    border: 1px solid rgba(140, 175, 230, 0.12);
    border-radius: 16px;
    padding: 18px 22px;
    line-height: 1.9;
    margin-top: 28px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

/* article layout */
.article-layout {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px 76px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 34px;
    align-items: start;
}
.article-main-col {
    min-width: 0;
}
.article-side-col {
    display: flex;
    flex-direction: column;
    gap: 22px;
    position: sticky;
    top: 100px;
}
.article-block {
    background: var(--glass);
    border: 1px solid var(--glass-edge);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.article-prose {
    font-size: 16.5px;
    line-height: 1.95;
    color: #DCE6F5;
}
.article-prose p {
    margin: 0 0 1.4em;
}
.article-prose h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--colour);
    margin: 2.2em 0 0.9em;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(140, 175, 230, 0.12);
    scroll-margin-top: 120px;
}
.article-prose h3 {
    font-size: 19px;
    font-weight: 700;
    color: #F0F5FF;
    margin: 1.7em 0 0.7em;
    scroll-margin-top: 120px;
}
.article-prose ul,
.article-prose ol {
    margin: 0 0 1.4em;
    padding-left: 1.4em;
}
.article-prose li {
    margin-bottom: 0.5em;
}
.article-prose ul li::marker {
    color: var(--cyan);
}
.article-prose blockquote {
    margin: 1.6em 0;
    padding: 18px 22px;
    background: rgba(79, 141, 255, 0.08);
    border-left: 3px solid var(--cyan);
    border-radius: 0 14px 14px 0;
    color: #C3D3EA;
}
.article-prose img {
    border-radius: 16px;
    border: 1px solid var(--glass-edge);
    margin: 20px 0;
    width: auto;
    height: auto;
}
.article-prose figcaption {
    font-size: 13px;
    color: var(--textweak);
    text-align: center;
    margin: -8px 0 18px;
}
.article-prose a {
    color: var(--info);
    border-bottom: 1px solid rgba(79, 141, 255, 0.4);
}
.article-prose a:hover {
    color: var(--amber);
    border-color: rgba(255, 180, 84, 0.5);
}
.article-prose strong {
    color: #F5F8FF;
}

.article-end-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 34px;
    padding-top: 18px;
    border-top: 1px solid rgba(140, 175, 230, 0.12);
}
.article-end-note {
    margin-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    background: rgba(140, 175, 230, 0.06);
    border: 1px dashed rgba(140, 175, 230, 0.2);
    border-radius: 16px;
    padding: 18px 20px;
    color: var(--text-sub);
    font-size: 15px;
}

/* side cards */
.side-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(140, 175, 230, 0.13);
    border-radius: var(--radius-lg);
    padding: 24px;
    backdrop-filter: blur(8px);
}
.side-card-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 18px;
    color: #E4EDFA;
}
.side-card-title i {
    color: var(--amber);
}
.side-link-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.side-link-list a {
    display: flex;
    align-items: center;
    padding: 9px 10px;
    border-radius: 10px;
    color: var(--text-sub);
    font-size: 15px;
    transition: all 0.2s ease;
}
.side-link-list a:hover {
    background: rgba(79, 141, 255, 0.07);
    color: var(--colour);
}
.side-link-list a i {
    width: 25px;
    color: var(--cyan);
    font-size: 13px;
}
.status-card {
    background: rgba(20, 32, 50, 0.55);
    border: 1px solid rgba(140, 175, 230, 0.16);
    border-radius: var(--radius-lg);
    padding: 24px;
    backdrop-filter: blur(8px);
}
.platform-status {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}
.status-dot {
    width: 9px;
    height: 9px;
    background: var(--green);
    border-radius: 50%;
    box-shadow: 0 0 12px rgba(39, 224, 166, 0.8);
}
.platform-status span {
    color: #DCEAF9;
    font-weight: 600;
    font-size: 15px;
}
.status-card h4 {
    font-size: 13px;
    letter-spacing: 1px;
    color: var(--textweak);
    font-weight: 500;
    margin: 14px 0 6px;
}
.status-card p {
    color: var(--text-sub);
    font-size: 14px;
    margin-bottom: 18px;
}
.cover-mini {
    border-radius: 12px;
    overflow: hidden;
    margin-top: 14px;
    border: 1px solid var(--glass-edge);
}
.cover-mini img {
    width: 100%;
    height: 120px;
    object-fit: cover;
}

/* category guide cards */
.guide-section {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px 60px;
}
.guide-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}
.guide-header h2 {
    font-size: clamp(23px, 3vw, 32px);
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--colour);
}
.guide-header p {
    color: var(--text-sub);
    font-size: 15.5px;
}
.guide-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}
.rel-card {
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.035);
    border: 1px solid var(--glass-edge);
    border-radius: 20px;
    overflow: hidden;
    transition: transform 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease;
}
.rel-card:hover {
    transform: translateY(-5px);
    border-color: rgba(79, 141, 255, 0.35);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(79, 141, 255, 0.08);
}
.rel-card-cover {
    position: relative;
    height: 154px;
    overflow: hidden;
    background: var(--bg-3);
}
.rel-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}
.rel-card:hover .rel-card-cover img {
    transform: scale(1.04);
}
.rel-card-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, rgba(7, 13, 26, 0.35), transparent 50%);
}
.rel-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    font-size: 12px;
    color: #EAF2FF;
    background: rgba(10, 20, 35, 0.55);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.14);
    padding: 4px 12px;
    border-radius: 999px;
    letter-spacing: 0.4px;
}
.rel-body {
    padding: 20px 22px 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.rel-body h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--colour);
    margin-bottom: 10px;
}
.rel-body p {
    color: var(--text-sub);
    font-size: 14.5px;
    line-height: 1.8;
    flex: 1;
}
.arrow-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--cyan);
    font-size: 14.5px;
    font-weight: 600;
    margin-top: 16px;
}
.arrow-link:hover {
    color: var(--amber);
}
.section-space {
    padding-top: 72px;
    padding-bottom: 72px;
}

/* FAQ */
.faq-section {
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
}
.faq-section-head {
    margin-bottom: 30px;
    max-width: 780px;
}
.faq-section-head h2 {
    font-size: clamp(23px, 3vw, 31px);
    font-weight: 700;
    margin-bottom: 10px;
}
.faq-section-head p {
    color: var(--text-sub);
    font-size: 15.5px;
}
.faq-stack {
    display: grid;
    gap: 14px;
}
.faq-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(140, 175, 230, 0.13);
    border-radius: 18px;
    overflow: hidden;
}
.faq-item.open {
    background: rgba(79, 141, 255, 0.06);
    border-color: rgba(79, 141, 255, 0.28);
}
.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    text-align: left;
    padding: 21px 24px;
    background: transparent;
    color: var(--colour);
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s ease;
}
.faq-question:hover {
    color: var(--amber);
}
.faq-arrow {
    display: inline-flex;
    width: 30px;
    height: 30px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(140, 175, 230, 0.1);
    color: var(--amber);
    transition: transform 0.2s ease;
    flex-shrink: 0;
}
.faq-item.open .faq-arrow {
    transform: rotate(180deg);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}
.faq-answer-inner {
    padding: 0 24px 22px;
    color: var(--text-sub);
    font-size: 15px;
    line-height: 1.9;
}

/* cta */
.cta-section {
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding: 80px 24px 70px;
}
.cta-card {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    background: linear-gradient(160deg, rgba(20, 32, 50, 0.92), rgba(9, 17, 31, 0.95)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
    border: 1px solid var(--glass-edge);
    border-radius: 28px;
    padding: 42px;
    gap: 40px;
    box-shadow: var(--shadow-card);
}
.cta-heading {
    font-size: 25px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 12px;
}
.cta-card p {
    color: var(--text-sub);
    font-size: 15.5px;
    margin-bottom: 20px;
}
.form-field {
    display: block;
    width: 100%;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(140, 175, 230, 0.16);
    border-radius: 12px;
    padding: 13px 16px;
    color: var(--colour);
    font-size: 15px;
    transition: border 0.2s, box-shadow 0.2s;
}
.form-field:focus {
    border-color: var(--amber);
    box-shadow: 0 0 0 3px rgba(255, 180, 84, 0.15);
}
.form-field::placeholder {
    color: var(--textweak);
}
textarea.form-field {
    resize: vertical;
    min-height: 96px;
}
.cta-buttons {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}
.contact-meta {
    display: flex;
    flex-direction: column;
    gap: 18px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(140, 175, 230, 0.14);
    border-radius: 20px;
    padding: 22px;
}
.contact-meta-row {
    display: flex;
    align-items: flex-start;
    gap: 13px;
    color: var(--text-sub);
    font-size: 14.5px;
}
.contact-meta-row i {
    margin-top: 4px;
    color: var(--cyan);
}
.qr-box {
    width: 112px;
    height: 112px;
    background: rgba(140, 175, 230, 0.08);
    border: 1px dashed rgba(140, 175, 230, 0.25);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--textweak);
    font-size: 12px;
    text-align: center;
    margin-top: 10px;
}

/* footer */
.site-footer {
    background: rgba(12, 22, 38, 0.45);
    border-top: 1px solid rgba(140, 175, 230, 0.13);
}
.footer-brand {
    font-size: 22px;
    font-weight: 800;
    color: var(--colour);
}
.footer-desc {
    color: var(--text-sub);
    font-size: 14.5px;
    line-height: 1.85;
    margin: 18px 0 16px;
}
.footer-title {
    font-size: 14px;
    line-height: normal;
    color: #E2EBF8;
    margin-bottom: 16px;
    letter-spacing: 1.5px;
    font-weight: 600;
}
.footer-link-item {
    display: inline-flex;
    align-items: center;
    padding: 7px 0;
    color: var(--text-sub);
    font-size: 14.5px;
    transition: color 0.2s;
}
.footer-link-item i {
    margin-right: 8px;
    color: var(--textweak);
    font-size: 11px;
}
.footer-link-item:hover {
    color: var(--amber);
}
.footer-bottom-line {
    border-top: 1px solid rgba(140, 175, 230, 0.1);
    margin-top: 44px;
    padding-top: 22px;
    padding-bottom: 24px;
    color: var(--textweak);
    font-size: 13px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

/* not found */
.not-found-panel {
    max-width: 1280px;
    margin: 0 auto;
    padding: 100px 24px 130px;
    text-align: center;
}
.not-found-icon {
    font-size: 54px;
    color: var(--amber);
    margin-bottom: 25px;
}
.not-found-panel h1 {
    font-size: 30px;
    font-weight: 800;
    margin-bottom: 14px;
}
.not-found-panel p {
    color: var(--text-sub);
    font-size: 16px;
    max-width: 620px;
    margin: 0 auto 30px;
    line-height: 1.9;
}

/* responsive */
@media (max-width: 1024px) {
    .article-layout {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .article-side-col {
        position: static;
        flex-direction: column;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 18px;
    }
    .guide-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .cta-card {
        grid-template-columns: 1fr;
        padding: 30px;
    }
}
@media (max-width: 860px) {
    .article-side-col {
        grid-template-columns: 1fr;
    }
    .guide-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .navmenu-item {
        display: none;
    }
    .hamburger-icon {
        display: inline-flex;
    }
    .desktop-cta-btn {
        display: none !important;
    }
}
@media (max-width: 640px) {
    .container-main {
        padding: 0 16px;
    }
    .post-hero-inner {
        padding: 50px 16px 44px;
    }
    .article-layout {
        padding: 0 16px 56px;
    }
    .guide-section {
        padding: 0 16px 44px;
    }
    .faq-section {
        padding: 0 16px;
    }
    .cta-section {
        padding: 56px 16px 50px;
    }
    .article-block {
        padding: 24px 18px;
    }
    .article-prose {
        font-size: 15.5px;
    }
    .guide-grid {
        grid-template-columns: 1fr;
    }
    .rel-card-cover {
        height: 130px;
    }
    .post-hero h1 {
        font-size: 26px;
    }
    .post-summary {
        font-size: 15px;
        padding: 16px;
    }
    .post-meta-wrap {
        gap: 12px;
    }
    .cta-card {
        padding: 22px 18px;
    }
    .form-field,
    .btn-primary {
        width: 100%;
    }
    .footer-bottom-line {
        justify-content: center;
        text-align: center;
    }
}

/* roulang page: category2 */
:root {
            --color-bg: #070D1A;
            --color-surface: #0C1626;
            --color-raised: #132136;
            --glass: rgba(20, 32, 50, 0.62);
            --glass-strong: rgba(16, 28, 46, 0.82);
            --border-main: rgba(140, 175, 230, 0.14);
            --text-main: #EAF0FB;
            --text-secondary: #A6B6D0;
            --text-muted: #75869F;
            --func-blue: #4F8DFF;
            --func-cyan: #42D3D5;
            --func-amber: #FFB454;
            --func-green: #27E0A6;
            --func-red: #FF5C72;
            --radius-card: 20px;
            --radius-btn: 12px;
            --shadow-card: 0 16px 40px rgba(0, 0, 0, 0.28);
            --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 100px;
        }

        body {
            margin: 0;
            padding: 0;
            background: var(--color-bg);
            color: var(--text-main);
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        .container-main {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .text-main-color {
            color: var(--text-main);
        }

        .text-sub-color {
            color: var(--text-secondary);
        }

        .text-muted-color {
            color: var(--text-muted);
        }

        .logotext {
            letter-spacing: -0.02em;
            white-space: nowrap;
        }

        .navmenu-item {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: 12px;
            position: relative;
            line-height: 1.4;
            transition: all 0.22s ease;
            display: inline-block;
        }

        .navmenu-item:hover {
            color: var(--text-main);
            background: rgba(79, 141, 255, 0.08);
        }

        .navmenu-item.active {
            color: var(--text-main);
        }

        .navmenu-item.active::after {
            content: "";
            display: block;
            height: 2px;
            width: 26px;
            margin: 4px auto 0;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--func-blue), var(--func-cyan));
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #FFB454, #EE9A26);
            color: #101720;
            border: 0;
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-weight: 700;
            font-size: 15px;
            line-height: 1;
            box-shadow: 0 0 24px rgba(255, 180, 84, 0.22), 0 6px 18px rgba(0, 0, 0, 0.22);
            transition: all 0.22s ease;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 36px rgba(255, 180, 84, 0.34), 0 10px 26px rgba(0, 0, 0, 0.28);
            background: linear-gradient(135deg, #FFC06B, #FFA338);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(255, 180, 84, 0.35);
            outline-offset: 3px;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #C8D8F5;
            border: 1px solid rgba(140, 175, 230, 0.32);
            border-radius: var(--radius-btn);
            padding: 12px 26px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1;
            backdrop-filter: blur(6px);
            transition: all 0.22s ease;
            white-space: nowrap;
        }

        .btn-outline:hover {
            border-color: rgba(79, 141, 255, 0.7);
            color: var(--text-main);
            background: rgba(79, 141, 255, 0.1);
            transform: translateY(-2px);
        }

        .btn-outline:focus-visible {
            outline: 3px solid rgba(79, 141, 255, 0.3);
            outline-offset: 3px;
        }

        .hamburger-icon {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            margin-left: 12px;
            color: var(--text-main);
            font-size: 20px;
            border-radius: 12px;
            cursor: pointer;
            background: rgba(140, 175, 230, 0.08);
            border: 1px solid rgba(140, 175, 230, 0.12);
        }

        .header-site-nav {
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: rgba(7, 13, 26, 0.97);
            border-bottom: 1px solid rgba(140, 175, 230, 0.12);
            padding: 12px 20px 18px;
            gap: 4px;
            backdrop-filter: blur(14px);
            z-index: 60;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            color: var(--text-secondary);
            font-size: 16px;
            font-weight: 600;
            padding: 12px 8px;
            border-bottom: 1px solid rgba(140, 175, 230, 0.08);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--text-main);
        }

        @media (max-width: 1023px) {
            .header-site-nav {
                display: none !important;
            }
            .hamburger-icon {
                display: inline-flex;
            }
        }

        @media (min-width: 1024px) {
            .hamburger-icon {
                display: none !important;
            }
        }

        .card-panel {
            background: rgba(14, 24, 42, 0.66);
            border: 1px solid var(--border-main);
            border-radius: var(--radius-card);
            transition: all 0.25s ease;
        }

        .card-panel:hover {
            transform: translateY(-4px);
            border-color: rgba(79, 141, 255, 0.3);
            box-shadow: var(--shadow-card);
        }

        .glass-card {
            background: var(--glass);
            border: 1px solid var(--border-main);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-card);
        }

        .chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(140, 175, 230, 0.08);
            border: 1px solid rgba(140, 175, 230, 0.14);
            color: var(--text-secondary);
            border-radius: 999px;
            padding: 5px 14px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.5;
        }

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--func-cyan);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.12em;
        }

        .section-kicker::before {
            content: "";
            display: inline-block;
            width: 28px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--func-cyan));
        }

        .aside-card {
            position: sticky;
            top: 100px;
            background: rgba(11, 20, 34, 0.72);
            border: 1px solid var(--border-main);
            border-radius: 18px;
            padding: 22px;
            backdrop-filter: blur(10px);
        }

        .aside-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .aside-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            width: 100%;
            padding: 9px 12px;
            border-radius: 10px;
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            border-left: 2px solid transparent;
            transition: all 0.2s ease;
        }

        .aside-nav a:hover {
            color: var(--text-main);
            background: rgba(79, 141, 255, 0.08);
            border-left-color: var(--func-blue);
        }

        .aside-nav a.active-nav {
            color: var(--func-amber);
            background: rgba(255, 180, 84, 0.07);
            border-left-color: var(--func-amber);
        }

        .aside-nav a i {
            width: 18px;
            text-align: center;
            color: var(--text-muted);
            font-size: 12px;
        }

        .chapter-block {
            scroll-margin-top: 120px;
        }

        .chapter-block+.chapter-block {
            margin-top: 72px;
            padding-top: 60px;
            border-top: 1px solid rgba(140, 175, 230, 0.12);
        }

        .chapter-title {
            font-size: 26px;
            line-height: 1.4;
            font-weight: 800;
            margin: 14px 0 16px;
            color: var(--text-main);
            letter-spacing: -0.01em;
        }

        .chapter-intro {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.85;
            margin: 0 0 24px;
        }

        .feature-card {
            background: rgba(16, 27, 44, 0.74);
            border: 1px solid var(--border-main);
            border-radius: 16px;
            padding: 22px;
            transition: all 0.22s ease;
        }

        .feature-card:hover {
            background: rgba(22, 36, 58, 0.78);
            border-color: rgba(66, 211, 213, 0.35);
            transform: translateY(-2px);
        }

        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 13px;
            background: rgba(79, 141, 255, 0.13);
            border: 1px solid rgba(79, 141, 255, 0.22);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--func-cyan);
            font-size: 18px;
            margin-bottom: 16px;
        }

        .badge-step {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 34px;
            height: 34px;
            border-radius: 999px;
            background: rgba(255, 180, 84, 0.12);
            border: 1px solid rgba(255, 180, 84, 0.28);
            color: var(--func-amber);
            font-weight: 800;
            font-size: 14px;
        }

        .check-item {
            display: flex;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px solid rgba(140, 175, 230, 0.08);
        }

        .check-item:last-child {
            border-bottom: 0;
        }

        .check-item i {
            color: var(--func-green);
            font-size: 16px;
            margin-top: 4px;
        }

        .faq-card {
            width: 100%;
            background: rgba(11, 21, 36, 0.72);
            border: 1px solid var(--border-main);
            border-radius: 16px;
            overflow: hidden;
            transition: border-color 0.22s ease;
        }

        .faq-card[open] {
            border-color: rgba(255, 180, 84, 0.32);
        }

        .faq-card summary {
            display: flex;
            align-items: center;
            gap: 14px;
            cursor: pointer;
            list-style: none;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 650;
            color: var(--text-main);
            background: transparent;
            user-select: none;
        }

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

        .faq-card summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 13px;
            color: var(--text-muted);
            margin-left: auto;
            transition: transform 0.28s ease, color 0.28s ease;
        }

        .faq-card[open] summary::after {
            transform: rotate(180deg);
            color: var(--func-amber);
        }

        .faq-card .faq-no {
            width: 28px;
            height: 28px;
            min-width: 28px;
            border-radius: 50%;
            background: rgba(79, 141, 255, 0.1);
            border: 1px solid rgba(79, 141, 255, 0.2);
            color: var(--func-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
        }

        .faq-answer {
            padding: 0 22px 20px 64px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.9;
        }

        .input-box {
            display: block;
            width: 100%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(140, 175, 230, 0.2);
            border-radius: var(--radius-btn);
            color: var(--text-main);
            padding: 13px 16px;
            font-size: 15px;
            transition: all 0.2s ease;
        }

        .input-box::placeholder {
            color: var(--text-muted);
        }

        .input-box:hover {
            border-color: rgba(140, 175, 230, 0.34);
        }

        .input-box:focus {
            outline: none;
            border-color: var(--func-amber);
            box-shadow: 0 0 0 4px rgba(255, 180, 84, 0.14);
            background: rgba(255, 255, 255, 0.08);
        }

        .form-success {
            background: rgba(39, 224, 166, 0.1);
            border: 1px solid rgba(39, 224, 166, 0.28);
            color: #D9FFF3;
            padding: 16px 20px;
            border-radius: 14px;
            font-size: 15px;
            margin-bottom: 20px;
        }

        .footer-link-item {
            display: flex;
            align-items: center;
            color: var(--text-secondary);
            font-size: 14px;
            padding: 5px 0;
            line-height: 1.9;
        }

        .footer-link-item i {
            color: var(--func-blue);
            margin-right: 8px;
            font-size: 12px;
            width: 16px;
            text-align: center;
            transition: color 0.2s ease;
        }

        .footer-link-item:hover {
            color: var(--func-amber);
        }

        .footer-link-item:hover i {
            color: var(--func-amber);
        }

        .media-frame {
            border-radius: 18px;
            overflow: hidden;
            border: 1px solid var(--border-main);
            background: var(--color-surface);
        }

        .media-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hero-banner {
            min-height: 420px;
            display: flex;
            align-items: center;
            padding: 96px 0 88px;
            position: relative;
            isolation: isolate;
            background-image: url("/assets/images/backpic/back-2.png");
            background-position: center;
            background-size: cover;
            background-repeat: no-repeat;
        }

        .hero-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(7, 13, 26, 0.96) 0%, rgba(7, 13, 26, 0.78) 46%, rgba(7, 13, 26, 0.46) 100%);
            z-index: 0;
        }

        .hero-banner::after {
            content: "";
            position: absolute;
            inset: 0;
            z-index: 0;
            background: radial-gradient(circle at 78% 26%, rgba(66, 211, 213, 0.12), transparent 28%), radial-gradient(circle at 20% 80%, rgba(255, 180, 84, 0.08), transparent 22%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }

        .cta-banner {
            position: relative;
            isolation: isolate;
            background: url("/assets/images/backpic/back-1.png") center / cover no-repeat;
            overflow: hidden;
        }

        .cta-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(7, 13, 26, 0.56);
            z-index: 0;
        }

        @media (max-width: 767px) {
            .hero-banner {
                min-height: 340px;
                padding: 80px 0 70px;
            }
            .chapter-title {
                font-size: 22px;
            }
            .container-main {
                padding: 0 18px;
            }
            .faq-answer {
                padding-left: 20px;
                padding-right: 18px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-night: #070D1A;
            --bg-night2: #0A1222;
            --bg-secondary: #0C1626;
            --bg-lift: #132136;
            --panel-glass: rgba(20, 32, 50, 0.62);
            --glass-border: rgba(140, 175, 230, 0.16);
            --text-main: #EAF0FB;
            --text-sub: #A6B6D0;
            --textweak: #75869F;
            --func-blue: #4F8DFF;
            --func-cyan: #42D3D5;
            --func-amber: #FFB454;
            --func-green: #27E0A6;
            --func-red: #FF5C72;
            --radius-card: 20px;
            --radius-btn: 12px;
            --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.28);
            --shadow-glow-blue: 0 0 24px rgba(79, 141, 255, 0.12);
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 90px;
        }

        body {
            margin: 0;
            background: var(--bg-night);
            color: var(--text-main);
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

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

        .container-main {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container-main {
                padding: 0 16px;
            }
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            z-index: 0;
            background:
                radial-gradient(circle at 85% 6%, rgba(79, 141, 255, 0.10), transparent 24%),
                radial-gradient(circle at 6% 58%, rgba(66, 211, 213, 0.05), transparent 22%),
                radial-gradient(circle at 72% 82%, rgba(255, 180, 84, 0.04), transparent 20%);
        }

        main,
        footer,
        header,
        section {
            position: relative;
            z-index: 1;
        }

        .bg-night {
            background: var(--bg-night);
        }

        .bg-secondary {
            background: var(--bg-secondary);
        }

        .bg-lift {
            background: var(--bg-lift);
        }

        .text-default {
            color: var(--text-main);
        }

        .text-sub {
            color: var(--text-sub);
        }

        .textweak {
            color: var(--textweak);
        }

        .section-space {
            padding: 96px 0;
        }

        @media (max-width: 768px) {
            .section-space {
                padding: 58px 0;
            }
        }

        .logotext {
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        #desktop-nav-items {
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .navmenu-item {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 9px 14px;
            margin-left: 2px;
            border-radius: 10px;
            color: var(--text-sub);
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.01em;
            transition: color .2s ease, background .2s ease;
        }

        .navmenu-item:hover {
            color: #EAF0FB;
            background: rgba(79, 141, 255, 0.06);
        }

        .navmenu-item.active {
            color: #EAF0FB;
            font-weight: 600;
        }

        .navmenu-item.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 1px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, rgba(79, 141, 255, 0.9), rgba(66, 211, 213, 0.35));
        }

        .hamburger-icon {
            display: none;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            margin-left: 12px;
            background: rgba(79, 141, 255, 0.08);
            border: 1px solid rgba(140, 175, 230, 0.16);
            border-radius: 10px;
            color: #EAF0FB;
            font-size: 18px;
            cursor: pointer;
            transition: background .2s ease;
        }

        .hamburger-icon:hover {
            background: rgba(79, 141, 255, 0.16);
        }

        .mobile-menu {
            display: none;
            width: 100%;
            padding: 12px 16px 18px;
            background: rgba(7, 13, 26, 0.96);
            border-top: 1px solid rgba(140, 175, 230, 0.12);
        }

        .mobile-menu.open {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-menu a {
            padding: 12px 14px;
            min-height: 46px;
            border-radius: 10px;
            color: var(--text-sub);
            font-size: 15px;
            font-weight: 500;
            display: flex;
            align-items: center;
        }

        .mobile-menu a:active,
        .mobile-menu a:hover {
            background: rgba(79, 141, 255, 0.08);
            color: #EAF0FB;
        }

        @media (max-width: 1023px) {
            #desktop-nav-items {
                display: none !important;
            }

            .hamburger-icon {
                display: inline-flex;
            }

            .header-cta-desktop {
                display: none !important;
            }
        }

        .btn-primary,
        .btn-secondary,
        .btn-outline,
        .btn-amber {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            cursor: pointer;
            font-weight: 700;
            line-height: 1;
            border: none;
            transition: transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
            white-space: nowrap;
        }

        .btn-amber,
        .btn-primary {
            background: linear-gradient(135deg, #FFC46B 0%, #FFA64A 100%);
            color: #0B1622;
            box-shadow: 0 0 22px rgba(255, 180, 84, 0.22);
        }

        .btn-amber:hover,
        .btn-primary:hover {
            background: linear-gradient(135deg, #FFCF80 0%, #FFB45C 100%);
            transform: translateY(-2px);
            box-shadow: 0 0 34px rgba(255, 180, 84, 0.34);
        }

        .btn-secondary {
            background: rgba(79, 141, 255, 0.08);
            color: #DDE9FF;
            border: 1px solid rgba(79, 141, 255, 0.34);
        }

        .btn-secondary:hover {
            background: rgba(79, 141, 255, 0.18);
            border-color: rgba(79, 141, 255, 0.6);
            color: #FFFFFF;
            transform: translateY(-2px);
        }

        .btn-outline {
            background: rgba(20, 32, 50, 0.4);
            color: var(--text-main);
            border: 1px solid var(--glass-border);
        }

        .btn-outline:hover {
            background: rgba(79, 141, 255, 0.08);
            border-color: rgba(140, 175, 230, 0.46);
            transform: translateY(-2px);
        }

        .glass-panel {
            background: var(--panel-glass);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .glass-soft {
            background: rgba(19, 33, 54, 0.58);
            border: 1px solid rgba(140, 175, 230, 0.12);
            border-radius: var(--radius-card);
        }

        .solid-card {
            background: var(--bg-lift);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
        }

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 13px;
            letter-spacing: 0.04em;
            background: rgba(79, 141, 255, 0.08);
            border: 1px solid rgba(79, 141, 255, 0.18);
            color: #9DBCFF;
            font-weight: 500;
        }

        .section-title {
            font-size: clamp(25px, 3vw, 33px);
            font-weight: 800;
            line-height: 1.35;
            letter-spacing: -0.01em;
            margin: 12px 0 8px;
            color: var(--text-main);
        }

        .section-sub {
            color: var(--text-sub);
            font-size: 15px;
            max-width: 720px;
        }

        .badge-pill,
        .tag-pill {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            height: 26px;
            padding: 0 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            line-height: 1;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .tag-blue {
            background: rgba(79, 141, 255, 0.1);
            border: 1px solid rgba(79, 141, 255, 0.28);
            color: #9DC0FF;
        }

        .tag-cyan {
            background: rgba(66, 211, 213, 0.08);
            border: 1px solid rgba(66, 211, 213, 0.24);
            color: #7CE4E5;
        }

        .tag-amber {
            background: rgba(255, 180, 84, 0.08);
            border: 1px solid rgba(255, 180, 84, 0.26);
            color: #FFD29A;
        }

        .activity-card,
        .feature-card {
            transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
        }

        .activity-card:hover {
            transform: translateY(-6px);
            border-color: rgba(140, 175, 230, 0.36);
            box-shadow: 0 22px 44px rgba(0, 0, 0, 0.36), 0 0 30px rgba(79, 141, 255, 0.06);
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.44);
        }

        .bg-glow-cyan {
            background:
                radial-gradient(circle at 16% 30%, rgba(66, 211, 213, 0.10), transparent 36%),
                radial-gradient(circle at 84% 62%, rgba(79, 141, 255, 0.12), transparent 42%),
                var(--bg-lift);
        }

        .step-node {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            background: linear-gradient(145deg, rgba(79, 141, 255, 0.13), rgba(66, 211, 213, 0.08));
            border: 1px solid rgba(79, 141, 255, 0.24);
            color: #BA D4FF;
            color: #B4D0FF;
            box-shadow: 0 0 18px rgba(79, 141, 255, 0.08);
        }

        .schedule-item {
            position: relative;
            padding: 22px;
            background: rgba(12, 22, 38, 0.72);
            border: 1px solid rgba(140, 175, 230, 0.12);
            border-radius: 18px;
            transition: border-color .2s ease, background .2s ease, transform .2s ease;
        }

        .schedule-item:hover {
            border-color: rgba(79, 141, 255, 0.32);
            background: rgba(19, 33, 54, 0.8);
            transform: translateY(-3px);
        }

        .schedule-date {
            display: inline-flex;
            flex-direction: column;
            gap: 2px;
            padding: 6px 14px 6px 15px;
            background: rgba(79, 141, 255, 0.08);
            border-left: 3px solid var(--func-amber);
            border-radius: 8px 18px 18px 8px;
        }

        .schedule-date strong {
            font-size: 15px;
            color: #EAF0FB;
            font-weight: 700;
        }

        .schedule-date small {
            font-size: 12px;
            color: #A6B6D0;
        }

        .faq-card {
            border: 1px solid rgba(140, 175, 230, 0.14);
            border-radius: 16px;
            background: rgba(19, 33, 54, 0.48);
            overflow: hidden;
            transition: border-color .2s ease, background .2s ease;
        }

        .faq-card.open {
            border-color: rgba(79, 141, 255, 0.36);
            background: rgba(19, 33, 54, 0.72);
        }

        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            background: transparent;
            border: none;
            color: #EAF0FB;
            font-size: 15px;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            transition: color .2s ease;
        }

        .faq-q:hover {
            color: #ffffff;
        }

        .faq-q .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid rgba(140, 175, 230, 0.24);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #A6B6D0;
            font-size: 13px;
            transition: transform .3s ease, color .3s ease, border-color .3s ease;
            flex-shrink: 0;
        }

        .faq-card.open .faq-icon {
            transform: rotate(135deg);
            color: #FFB454;
            border-color: rgba(255, 180, 84, 0.48);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            padding: 0 20px;
            color: #A6B6D0;
            font-size: 15px;
            line-height: 1.8;
            transition: max-height .28s ease, padding .28s ease;
        }

        .faq-card.open .faq-a {
            max-height: 420px;
            padding: 0 20px 20px;
        }

        .form-input {
            width: 100%;
            padding: 12px 16px;
            border-radius: 12px;
            outline: none;
            border: 1px solid rgba(140, 175, 230, 0.18);
            background: rgba(255, 255, 255, 0.06);
            color: #EAF0FB;
            transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
        }

        .form-input::placeholder {
            color: #75869F;
        }

        .form-input:focus {
            border-color: rgba(255, 180, 84, 0.65);
            box-shadow: 0 0 0 4px rgba(255, 180, 84, 0.1);
            background: rgba(255, 255, 255, 0.08);
        }

        .footer-link-item {
            display: inline-flex;
            align-items: center;
            color: #A6B6D0;
            font-size: 14px;
            line-height: 1;
            margin: 0 0 14px;
            transition: color .2s ease, transform .2s ease;
        }

        .footer-link-item:hover {
            color: #EAF0FB;
            transform: translateX(3px);
        }

        .hero-bg {
            background:
                radial-gradient(circle at 80% 18%, rgba(79, 141, 255, 0.19), transparent 28%),
                radial-gradient(circle at 20% 80%, rgba(255, 180, 84, 0.06), transparent 22%),
                linear-gradient(90deg, rgba(7, 13, 26, 0.94) 0%, rgba(7, 13, 26, 0.72) 100%),
                url("/assets/images/backpic/back-3.png");
            background-size: cover;
            background-position: center;
            background-blend-mode: normal;
        }

        .large-topic-cover {
            background-image:
                linear-gradient(180deg, rgba(7, 13, 26, 0.02) 0%, rgba(7, 13, 26, 0.61) 58%, rgba(7, 13, 26, 0.94) 100%),
                url("/assets/images/coverpic/cover-1.png");
            background-size: cover;
            background-position: center;
        }

        .cta-backdrop {
            background:
                radial-gradient(circle at 12% 26%, rgba(66, 211, 213, 0.12), transparent 34%),
                radial-gradient(circle at 88% 56%, rgba(79, 141, 255, 0.16), transparent 32%),
                linear-gradient(145deg, #101E36 0%, #0A1224 60%, #0D1A2E 100%);
            border: 1px solid rgba(140, 175, 230, 0.18);
        }