/* roulang page: index */
:root {
            --bg-base: #060B16;
            --bg-deep: #0A1830;
            --blue-primary: #2563EB;
            --blue-bright: #3B82F6;
            --cyan-accent: #38BDF8;
            --green-positive: #22C55E;
            --orange-highlight: #F97316;
            --text-primary: #E6EDF7;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --glass-bg: rgba(15, 23, 42, 0.62);
            --glass-bg-strong: rgba(15, 23, 42, 0.78);
            --glass-border: rgba(148, 163, 184, 0.18);
            --glass-highlight: rgba(255, 255, 255, 0.08);
            --radius-card: 1.25rem;
            --radius-lg: 1.5rem;
            --radius-btn: 9999px;
            --radius-input: 0.75rem;
            --shadow-card: 0 20px 40px -18px rgba(0, 0, 0, 0.55);
            --shadow-glow-blue: 0 0 18px rgba(59, 130, 246, 0.55);
            --shadow-glow-cyan: 0 0 14px rgba(56, 189, 248, 0.35);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-num: 'Inter', 'SF Pro Display', 'Roboto Mono', 'PingFang SC', monospace;
            --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            background: linear-gradient(165deg, #060B16 0%, #0A1830 42%, #081225 72%, #060B16 100%);
            color: var(--text-primary);
            line-height: 1.8;
            min-height: 100vh;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background:
                radial-gradient(ellipse at 20% 15%, rgba(37, 99, 235, 0.12) 0%, transparent 55%),
                radial-gradient(ellipse at 85% 65%, rgba(56, 189, 248, 0.08) 0%, transparent 45%),
                radial-gradient(ellipse at 65% 10%, rgba(34, 197, 94, 0.04) 0%, transparent 40%);
            pointer-events: none;
            z-index: 0;
        }

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--cyan-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        button {
            font-family: inherit;
            cursor: pointer;
            transition: all var(--transition-base);
        }

        input,
        select {
            font-family: inherit;
            font-size: 14px;
        }

        .container-main {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
            position: relative;
            z-index: 1;
        }

        @media (min-width: 640px) {
            .container-main {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container-main {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        .section-spacing {
            padding-top: 3.5rem;
            padding-bottom: 3.5rem;
        }

        @media (min-width: 768px) {
            .section-spacing {
                padding-top: 4.5rem;
                padding-bottom: 4.5rem;
            }
        }

        @media (min-width: 1024px) {
            .section-spacing {
                padding-top: 5rem;
                padding-bottom: 5rem;
            }
        }

        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card), inset 0 1px 0 var(--glass-highlight), inset 0 -1px 0 rgba(0, 0, 0, 0.2);
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .glass-card:hover {
            border-color: rgba(59, 130, 246, 0.42);
            transform: translateY(-4px);
            box-shadow: 0 24px 48px -18px rgba(0, 0, 0, 0.62), inset 0 1px 0 var(--glass-highlight), 0 0 24px rgba(59, 130, 246, 0.18);
        }

        .glass-card-flat {
            background: rgba(15, 23, 42, 0.55);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: linear-gradient(145deg, #3B82F6, #2563EB);
            color: #F0F4FF;
            font-weight: 600;
            font-size: 15px;
            padding: 0.75rem 1.75rem;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(148, 163, 184, 0.25);
            box-shadow: var(--shadow-glow-blue);
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
        }

        .btn-primary:hover {
            box-shadow: 0 0 28px rgba(59, 130, 246, 0.72), 0 8px 20px -8px rgba(37, 99, 235, 0.45);
            transform: translateY(-2px);
            border-color: rgba(255, 255, 255, 0.3);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.4);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: rgba(15, 23, 42, 0.35);
            color: var(--text-primary);
            font-weight: 500;
            font-size: 15px;
            padding: 0.7rem 1.6rem;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(148, 163, 184, 0.3);
            backdrop-filter: blur(8px);
            transition: all var(--transition-base);
        }

        .btn-ghost:hover {
            border-color: rgba(56, 189, 248, 0.5);
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.22);
            transform: translateY(-2px);
            background: rgba(15, 23, 42, 0.5);
        }

        .btn-ghost:active {
            transform: translateY(1px);
        }

        .tag-badge {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.8rem;
            border-radius: 9999px;
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.03em;
            border: 1px solid rgba(148, 163, 184, 0.22);
            background: rgba(15, 23, 42, 0.45);
            color: var(--text-secondary);
        }

        .tag-badge.blue {
            border-color: rgba(59, 130, 246, 0.45);
            color: #7BA7F5;
            background: rgba(37, 99, 235, 0.12);
        }

        .tag-badge.green {
            border-color: rgba(34, 197, 94, 0.4);
            color: #4ADE80;
            background: rgba(34, 197, 94, 0.1);
        }

        .tag-badge.orange {
            border-color: rgba(249, 115, 22, 0.4);
            color: #FB923C;
            background: rgba(249, 115, 22, 0.1);
        }

        .tag-badge.cyan {
            border-color: rgba(56, 189, 248, 0.4);
            color: #38BDF8;
            background: rgba(56, 189, 248, 0.1);
        }

        .section-header {
            margin-bottom: 2rem;
        }

        .section-header h2 {
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            line-height: 1.35;
            margin-bottom: 0.6rem;
        }

        .section-header p {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
        }

        @media (min-width: 768px) {
            .section-header h2 {
                font-size: 1.9rem;
            }
        }

        @media (min-width: 1024px) {
            .section-header h2 {
                font-size: 2.1rem;
            }
        }

        .text-gradient {
            background: linear-gradient(135deg, #E6EDF7 0%, #7BA7F5 55%, #38BDF8 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

        .num-display {
            font-family: var(--font-num);
            font-feature-settings: 'tnum' 1, 'lnum' 1;
            letter-spacing: -0.03em;
            font-weight: 700;
        }

        .stat-number {
            font-size: 2.5rem;
            line-height: 1.15;
            color: #E6EDF7;
            font-family: var(--font-num);
            font-weight: 700;
            letter-spacing: -0.03em;
        }

        @media (min-width: 768px) {
            .stat-number {
                font-size: 3rem;
            }
        }

        .trend-line {
            width: 100%;
            height: 40px;
            position: relative;
            overflow: hidden;
            border-radius: 8px;
            background: rgba(15, 23, 42, 0.4);
        }

        .trend-line svg {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
        }

        .divider-line {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(148, 163, 184, 0.22), transparent);
            margin: 2rem 0;
        }

        .speed-lines {
            position: absolute;
            inset: 0;
            pointer-events: none;
            overflow: hidden;
        }

        .speed-lines::before {
            content: '';
            position: absolute;
            top: 15%;
            left: -10%;
            width: 120%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.25), transparent);
            transform: rotate(-4deg);
        }

        .speed-lines::after {
            content: '';
            position: absolute;
            bottom: 20%;
            left: -10%;
            width: 120%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(56, 189, 248, 0.2), transparent);
            transform: rotate(-3deg);
        }

        .img-cover-container {
            position: relative;
            border-radius: 0.9rem;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: rgba(15, 23, 42, 0.55);
            border: 1px solid rgba(148, 163, 184, 0.14);
        }

        .img-cover-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 400ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        .card-link:hover .img-cover-container img {
            transform: scale(1.06);
        }

        .img-cover-container .overlay-badge {
            position: absolute;
            top: 0.85rem;
            left: 0.85rem;
            z-index: 2;
        }

        .nav-link {
            position: relative;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 0.4rem 0.8rem;
            border-radius: 0.5rem;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(59, 130, 246, 0.12);
        }

        .nav-link.active {
            color: #F0F4FF;
            background: rgba(59, 130, 246, 0.2);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background: var(--cyan-accent);
            border-radius: 9999px;
            box-shadow: 0 0 8px rgba(56, 189, 248, 0.6);
        }

        .mobile-menu {
            display: none;
        }

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

        .faq-item {
            border-bottom: 1px solid rgba(148, 163, 184, 0.14);
        }

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 1.1rem 0.5rem;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 15px;
            font-weight: 600;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            transition: color var(--transition-base);
        }

        .faq-question:hover {
            color: #7BA7F5;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 6px;
            background: rgba(59, 130, 246, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--cyan-accent);
            transition: transform var(--transition-base);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(56, 189, 248, 0.2);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 200ms cubic-bezier(0.4, 0, 0.2, 1);
            padding: 0 0.5rem;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 1.2rem;
        }

        .faq-answer p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.75;
        }

        .form-input {
            width: 100%;
            background: rgba(6, 11, 22, 0.7);
            border: 1px solid rgba(148, 163, 184, 0.25);
            border-radius: var(--radius-input);
            padding: 0.8rem 1.2rem;
            color: var(--text-primary);
            font-size: 14px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

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

        .form-input:focus {
            border-color: rgba(56, 189, 248, 0.55);
            box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.12);
            outline: none;
        }

        select.form-input {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394A3B8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 1rem center;
            padding-right: 2.5rem;
        }

        .nav-vertical-divider {
            width: 1px;
            height: 24px;
            background: rgba(148, 163, 184, 0.25);
            margin: 0 0.8rem;
        }

        @media (min-width: 1024px) {
            .nav-vertical-divider {
                display: block;
            }
        }

        .table-scroll {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .table-scroll table {
            min-width: 640px;
        }

        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }

        .data-table th {
            text-align: left;
            padding: 0.8rem 1rem;
            color: var(--text-muted);
            font-weight: 500;
            font-size: 12px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            border-bottom: 1px solid rgba(148, 163, 184, 0.18);
        }

        .data-table td {
            padding: 0.9rem 1rem;
            border-bottom: 1px solid rgba(148, 163, 184, 0.08);
            color: var(--text-secondary);
        }

        .data-table tr:hover td {
            background: rgba(59, 130, 246, 0.05);
        }

        .data-table .positive {
            color: var(--green-positive);
            font-weight: 600;
        }

        .data-table .negative {
            color: var(--orange-highlight);
            font-weight: 600;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.55;
                transform: scale(0.85);
            }
        }

        .live-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--green-positive);
            display: inline-block;
            animation: pulse-dot 1.8s ease-in-out infinite;
            box-shadow: 0 0 10px rgba(34, 197, 94, 0.7);
        }

        .card-link {
            display: block;
            color: inherit;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(18px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-fade-up {
            animation: fadeUp 500ms ease-out both;
        }

        @media (prefers-reduced-motion: reduce) {
            .animate-fade-up {
                animation: none;
            }
            .glass-card,
            .btn-primary,
            .btn-ghost,
            .card-link,
            .faq-question,
            .img-cover-container img {
                transition: none;
            }
            .live-dot {
                animation: none;
            }
        }

        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(150deg, rgba(6, 11, 22, 0.88) 0%, rgba(10, 24, 48, 0.72) 35%, rgba(6, 11, 22, 0.92) 100%);
        }

        .hero-bg-image {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
        }

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

/* roulang page: category1 */
:root {
            --bg-base: #060B16;
            --bg-deep: #0A1830;
            --blue-primary: #2563EB;
            --blue-bright: #3B82F6;
            --cyan-accent: #38BDF8;
            --green-positive: #22C55E;
            --orange-highlight: #F97316;
            --text-primary: #E6EDF7;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --glass-bg: rgba(15, 23, 42, 0.62);
            --glass-bg-strong: rgba(15, 23, 42, 0.78);
            --glass-border: rgba(148, 163, 184, 0.18);
            --glass-highlight: rgba(255, 255, 255, 0.08);
            --radius-card: 1.25rem;
            --radius-lg: 1.5rem;
            --radius-btn: 9999px;
            --radius-input: 0.75rem;
            --shadow-card: 0 20px 40px -18px rgba(0, 0, 0, 0.55);
            --shadow-glow-blue: 0 0 18px rgba(59, 130, 246, 0.55);
            --shadow-glow-cyan: 0 0 14px rgba(56, 189, 248, 0.35);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-num: 'Inter', 'SF Pro Display', 'Roboto Mono', 'PingFang SC', monospace;
            --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            background: linear-gradient(165deg, #060B16 0%, #0A1830 42%, #081225 72%, #060B16 100%);
            color: var(--text-primary);
            line-height: 1.8;
            min-height: 100vh;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background:
                radial-gradient(ellipse at 20% 15%, rgba(37, 99, 235, 0.12) 0%, transparent 55%),
                radial-gradient(ellipse at 85% 65%, rgba(56, 189, 248, 0.08) 0%, transparent 45%),
                radial-gradient(ellipse at 65% 10%, rgba(34, 197, 94, 0.04) 0%, transparent 40%);
            pointer-events: none;
            z-index: 0;
        }

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--cyan-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        button {
            font-family: inherit;
            cursor: pointer;
            transition: all var(--transition-base);
        }

        input,
        select {
            font-family: inherit;
            font-size: 14px;
        }

        .container-main {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
            position: relative;
            z-index: 1;
        }

        @media (min-width: 640px) {
            .container-main {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container-main {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        .section-spacing {
            padding-top: 3.5rem;
            padding-bottom: 3.5rem;
        }

        @media (min-width: 768px) {
            .section-spacing {
                padding-top: 4.5rem;
                padding-bottom: 4.5rem;
            }
        }

        @media (min-width: 1024px) {
            .section-spacing {
                padding-top: 5rem;
                padding-bottom: 5rem;
            }
        }

        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card), inset 0 1px 0 var(--glass-highlight), inset 0 -1px 0 rgba(0, 0, 0, 0.2);
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .glass-card:hover {
            border-color: rgba(59, 130, 246, 0.42);
            transform: translateY(-4px);
            box-shadow: 0 24px 48px -18px rgba(0, 0, 0, 0.62), inset 0 1px 0 var(--glass-highlight), 0 0 24px rgba(59, 130, 246, 0.18);
        }

        .glass-card-flat {
            background: rgba(15, 23, 42, 0.55);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: linear-gradient(145deg, #3B82F6, #2563EB);
            color: #F0F4FF;
            font-weight: 600;
            font-size: 15px;
            padding: 0.75rem 1.75rem;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(148, 163, 184, 0.25);
            box-shadow: var(--shadow-glow-blue);
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
        }

        .btn-primary:hover {
            box-shadow: 0 0 28px rgba(59, 130, 246, 0.72), 0 8px 20px -8px rgba(37, 99, 235, 0.45);
            transform: translateY(-2px);
            border-color: rgba(255, 255, 255, 0.3);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.4);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: rgba(15, 23, 42, 0.4);
            color: var(--text-primary);
            font-weight: 500;
            font-size: 14px;
            padding: 0.7rem 1.5rem;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(148, 163, 184, 0.25);
            box-shadow: none;
            transition: all var(--transition-base);
        }

        .btn-ghost:hover {
            border-color: rgba(56, 189, 248, 0.45);
            box-shadow: 0 0 18px rgba(56, 189, 248, 0.2);
            transform: translateY(-2px);
            background: rgba(15, 23, 42, 0.55);
        }

        .btn-ghost:active {
            transform: translateY(1px);
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            padding: 0.2rem 0.7rem;
            border-radius: 9999px;
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 0.03em;
            background: rgba(37, 99, 235, 0.18);
            color: #93C5FD;
            border: 1px solid rgba(59, 130, 246, 0.3);
        }

        .tag-chip-green {
            background: rgba(34, 197, 94, 0.12);
            color: #6EE7B7;
            border-color: rgba(34, 197, 94, 0.3);
        }

        .tag-chip-orange {
            background: rgba(249, 115, 22, 0.14);
            color: #FDBA74;
            border-color: rgba(249, 115, 22, 0.35);
        }

        .tag-chip-cyan {
            background: rgba(56, 189, 248, 0.12);
            color: #7DD3FC;
            border-color: rgba(56, 189, 248, 0.3);
        }

        .nav-link {
            position: relative;
            padding: 0.5rem 0.9rem;
            border-radius: 0.5rem;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(59, 130, 246, 0.1);
        }

        .nav-link.active {
            color: #60A5FA;
            background: rgba(59, 130, 246, 0.15);
            box-shadow: inset 0 0 0 1px rgba(59, 130, 246, 0.25);
        }

        .nav-vertical-divider {
            width: 1px;
            height: 1.25rem;
            background: rgba(148, 163, 184, 0.25);
            display: inline-block;
            margin: 0 0.2rem;
        }

        .text-gradient {
            background: linear-gradient(120deg, #93C5FD 0%, #38BDF8 50%, #3B82F6 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .section-title {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            line-height: 1.4;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 1.65rem;
            }
        }

        @media (min-width: 1024px) {
            .section-title {
                font-size: 1.85rem;
            }
        }

        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 720px;
        }

        .data-num {
            font-family: var(--font-num);
            font-feature-settings: 'tnum';
            letter-spacing: -0.02em;
        }

        .breadcrumb-link {
            color: var(--text-muted);
            font-size: 0.82rem;
            transition: color var(--transition-base);
        }

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

        .breadcrumb-sep {
            color: var(--text-muted);
            font-size: 0.8rem;
            margin: 0 0.35rem;
        }

        .faq-item {
            border-bottom: 1px solid rgba(148, 163, 184, 0.15);
        }

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 1rem 0.5rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            background: transparent;
            border: none;
            border-radius: 0.5rem;
            transition: all var(--transition-base);
        }

        .faq-question:hover {
            color: var(--cyan-accent);
            background: rgba(56, 189, 248, 0.05);
            padding-left: 0.75rem;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 1.5rem;
            height: 1.5rem;
            border-radius: 50%;
            background: rgba(59, 130, 246, 0.15);
            border: 1px solid rgba(59, 130, 246, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: #93C5FD;
            transition: transform var(--transition-base);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(56, 189, 248, 0.2);
            border-color: rgba(56, 189, 248, 0.4);
            color: #7DD3FC;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 200ms cubic-bezier(0.4, 0, 0.2, 1), padding 200ms ease;
            padding: 0 0.5rem;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.75;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 0.5rem 1rem;
        }

        .form-input {
            width: 100%;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-input);
            background: rgba(6, 11, 22, 0.7);
            border: 1px solid rgba(148, 163, 184, 0.25);
            color: var(--text-primary);
            font-size: 0.9rem;
            transition: all var(--transition-base);
        }

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

        .form-input:focus {
            border-color: rgba(56, 189, 248, 0.5);
            box-shadow: 0 0 12px rgba(56, 189, 248, 0.15);
            outline: none;
        }

        .form-select {
            width: 100%;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-input);
            background: rgba(6, 11, 22, 0.7);
            border: 1px solid rgba(148, 163, 184, 0.25);
            color: var(--text-primary);
            font-size: 0.9rem;
            appearance: none;
            -webkit-appearance: none;
            transition: all var(--transition-base);
        }

        .form-select:focus {
            border-color: rgba(56, 189, 248, 0.5);
            box-shadow: 0 0 12px rgba(56, 189, 248, 0.15);
            outline: none;
        }

        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6, 11, 22, 0.75) 0%, rgba(6, 11, 22, 0.85) 55%, rgba(6, 11, 22, 0.95) 100%);
            z-index: 0;
        }

        .mobile-menu-panel {
            display: none;
            background: rgba(10, 24, 48, 0.97);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(148, 163, 184, 0.15);
        }

        .mobile-menu-panel.open {
            display: block;
        }

        .mobile-nav-link {
            display: block;
            padding: 0.75rem 1rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 0.5rem;
            transition: all var(--transition-base);
        }

        .mobile-nav-link:hover {
            color: var(--text-primary);
            background: rgba(59, 130, 246, 0.1);
        }

        .mobile-nav-link.active {
            color: #60A5FA;
            background: rgba(59, 130, 246, 0.15);
        }

        .footer-link {
            color: var(--text-secondary);
            font-size: 0.85rem;
            transition: color var(--transition-base);
        }

        .footer-link:hover {
            color: var(--cyan-accent);
        }

        .data-bar {
            width: 100%;
            height: 4px;
            border-radius: 4px;
            background: rgba(148, 163, 184, 0.2);
            overflow: hidden;
        }

        .data-bar-fill {
            height: 100%;
            border-radius: 4px;
            background: linear-gradient(90deg, #2563EB, #38BDF8);
            transition: width 400ms ease;
        }

        .data-bar-fill-green {
            background: linear-gradient(90deg, #16A34A, #22C55E);
        }

        .data-bar-fill-orange {
            background: linear-gradient(90deg, #EA580C, #F97316);
        }

        .table-wrapper {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .table-data {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.85rem;
            min-width: 640px;
        }

        .table-data th {
            text-align: left;
            padding: 0.7rem 0.8rem;
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.78rem;
            letter-spacing: 0.04em;
            border-bottom: 1px solid rgba(148, 163, 184, 0.15);
            white-space: nowrap;
        }

        .table-data td {
            padding: 0.7rem 0.8rem;
            border-bottom: 1px solid rgba(148, 163, 184, 0.1);
            color: var(--text-secondary);
            white-space: nowrap;
        }

        .table-data tr:hover td {
            background: rgba(59, 130, 246, 0.06);
        }

        .data-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            display: inline-block;
            flex-shrink: 0;
        }

        .data-dot-green {
            background: #22C55E;
            box-shadow: 0 0 8px rgba(34, 197, 94, 0.6);
        }

        .data-dot-cyan {
            background: #38BDF8;
            box-shadow: 0 0 8px rgba(56, 189, 248, 0.5);
        }

        .data-dot-orange {
            background: #F97316;
            box-shadow: 0 0 8px rgba(249, 115, 22, 0.5);
        }

        .image-cover {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }

        .card-cover-wrapper {
            overflow: hidden;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
            aspect-ratio: 16 / 9;
            position: relative;
        }

        .card-cover-wrapper::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(6, 11, 22, 0.6) 100%);
            pointer-events: none;
        }

        .glass-card:hover .image-cover {
            transform: scale(1.05);
        }

/* roulang page: category2 */
:root {
            --bg-base: #060B16;
            --bg-deep: #0A1830;
            --blue-primary: #2563EB;
            --blue-bright: #3B82F6;
            --cyan-accent: #38BDF8;
            --green-positive: #22C55E;
            --orange-highlight: #F97316;
            --text-primary: #E6EDF7;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --glass-bg: rgba(15, 23, 42, 0.62);
            --glass-bg-strong: rgba(15, 23, 42, 0.78);
            --glass-border: rgba(148, 163, 184, 0.18);
            --glass-highlight: rgba(255, 255, 255, 0.08);
            --radius-card: 1.25rem;
            --radius-lg: 1.5rem;
            --radius-btn: 9999px;
            --radius-input: 0.75rem;
            --shadow-card: 0 20px 40px -18px rgba(0, 0, 0, 0.55);
            --shadow-glow-blue: 0 0 18px rgba(59, 130, 246, 0.55);
            --shadow-glow-cyan: 0 0 14px rgba(56, 189, 248, 0.35);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-num: 'Inter', 'SF Pro Display', 'Roboto Mono', 'PingFang SC', monospace;
            --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            background: linear-gradient(165deg, #060B16 0%, #0A1830 42%, #081225 72%, #060B16 100%);
            color: var(--text-primary);
            line-height: 1.8;
            min-height: 100vh;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background:
                radial-gradient(ellipse at 20% 15%, rgba(37, 99, 235, 0.12) 0%, transparent 55%),
                radial-gradient(ellipse at 85% 65%, rgba(56, 189, 248, 0.08) 0%, transparent 45%),
                radial-gradient(ellipse at 65% 10%, rgba(34, 197, 94, 0.04) 0%, transparent 40%);
            pointer-events: none;
            z-index: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--cyan-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            transition: all var(--transition-base);
        }
        input,
        select {
            font-family: inherit;
            font-size: 14px;
        }
        .container-main {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
            position: relative;
            z-index: 1;
        }
        .section-spacing {
            padding-top: 3.5rem;
            padding-bottom: 3.5rem;
        }
        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card), inset 0 1px 0 var(--glass-highlight), inset 0 -1px 0 rgba(0, 0, 0, 0.2);
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .glass-card:hover {
            border-color: rgba(59, 130, 246, 0.42);
            transform: translateY(-4px);
            box-shadow: 0 24px 48px -18px rgba(0, 0, 0, 0.62), inset 0 1px 0 var(--glass-highlight), 0 0 24px rgba(59, 130, 246, 0.18);
        }
        .glass-card-flat {
            background: rgba(15, 23, 42, 0.55);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: linear-gradient(145deg, #3B82F6, #2563EB);
            color: #F0F4FF;
            font-weight: 600;
            font-size: 15px;
            padding: 0.75rem 1.75rem;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(148, 163, 184, 0.25);
            box-shadow: var(--shadow-glow-blue);
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
        }
        .btn-primary:hover {
            box-shadow: 0 0 28px rgba(59, 130, 246, 0.72), 0 8px 20px -8px rgba(37, 99, 235, 0.45);
            transform: translateY(-2px);
            border-color: rgba(255, 255, 255, 0.3);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.4);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: rgba(15, 23, 42, 0.45);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 14px;
            padding: 0.6rem 1.5rem;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(148, 163, 184, 0.22);
            transition: all var(--transition-base);
        }
        .btn-ghost:hover {
            border-color: rgba(56, 189, 248, 0.45);
            color: var(--cyan-accent);
            box-shadow: 0 0 14px rgba(56, 189, 248, 0.22);
        }
        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: #B8C4D4;
            padding: 0.4rem 0.6rem;
            border-radius: 0.5rem;
            transition: color var(--transition-base), background var(--transition-base);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--cyan-accent);
            background: rgba(56, 189, 248, 0.06);
        }
        .nav-link.active {
            color: #FFFFFF;
            background: rgba(37, 99, 235, 0.22);
            border: 1px solid rgba(59, 130, 246, 0.35);
        }
        .nav-vertical-divider {
            width: 1px;
            height: 1.2rem;
            background: rgba(148, 163, 184, 0.22);
            margin: 0 0.4rem;
        }
        .text-gradient {
            background: linear-gradient(135deg, #F0F4FF 0%, #94A3B8 55%, #38BDF8 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .accent-cyan-text {
            color: var(--cyan-accent);
        }
        .badge-tag {
            display: inline-flex;
            align-items: center;
            padding: 0.2rem 0.7rem;
            font-size: 12px;
            font-weight: 500;
            border-radius: 9999px;
            background: rgba(37, 99, 235, 0.12);
            color: #7DB4F9;
            border: 1px solid rgba(59, 130, 246, 0.2);
            letter-spacing: 0.02em;
        }
        .badge-hot {
            display: inline-flex;
            align-items: center;
            padding: 0.2rem 0.7rem;
            font-size: 12px;
            font-weight: 600;
            border-radius: 9999px;
            background: rgba(249, 115, 22, 0.12);
            color: #FCA55F;
            border: 1px solid rgba(249, 115, 22, 0.25);
            letter-spacing: 0.02em;
        }
        .badge-green {
            display: inline-flex;
            align-items: center;
            padding: 0.2rem 0.7rem;
            font-size: 12px;
            font-weight: 600;
            border-radius: 9999px;
            background: rgba(34, 197, 94, 0.12);
            color: #4ADE80;
            border: 1px solid rgba(34, 197, 94, 0.22);
            letter-spacing: 0.02em;
        }
        .cover-img-wrapper {
            border-radius: 0.85rem;
            overflow: hidden;
            position: relative;
            aspect-ratio: 16 / 9;
            background: linear-gradient(145deg, rgba(30, 41, 59, 0.7), rgba(8, 14, 28, 0.9));
            border: 1px solid rgba(148, 163, 184, 0.12);
        }
        .cover-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .cover-img-wrapper:hover img {
            transform: scale(1.06);
        }
        .data-bar-track {
            width: 100%;
            height: 6px;
            background: rgba(148, 163, 184, 0.16);
            border-radius: 9999px;
            overflow: hidden;
        }
        .data-bar-fill {
            height: 100%;
            border-radius: 9999px;
            background: linear-gradient(90deg, #2563EB, #38BDF8);
            transition: width 0.6s ease;
        }
        .data-bar-fill.warm {
            background: linear-gradient(90deg, #F97316, #FBBF24);
        }
        .data-bar-fill.green {
            background: linear-gradient(90deg, #16A34A, #22C55E);
        }
        .data-number {
            font-family: var(--font-num);
            font-variant-numeric: tabular-nums;
            font-weight: 700;
            letter-spacing: -0.02em;
        }
        .breadcrumb-link {
            font-size: 13px;
            color: var(--text-muted);
            transition: color var(--transition-base);
        }
        .breadcrumb-link:hover {
            color: var(--cyan-accent);
        }
        .breadcrumb-sep {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0 0.4rem;
        }
        .faq-item {
            border-bottom: 1px solid rgba(148, 163, 184, 0.12);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1rem 0.25rem;
            font-weight: 600;
            font-size: 15px;
            color: var(--text-primary);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.25s ease, padding 0.25s ease;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.85;
        }
        .faq-item.open .faq-answer {
            max-height: 260px;
            padding-bottom: 1rem;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(59, 130, 246, 0.12);
            color: var(--cyan-accent);
            font-size: 18px;
            font-weight: 400;
            transition: transform 0.25s ease;
        }
        .form-input {
            width: 100%;
            background: rgba(8, 14, 28, 0.72);
            border: 1px solid rgba(148, 163, 184, 0.18);
            border-radius: var(--radius-input);
            padding: 0.7rem 1rem;
            color: var(--text-primary);
            font-size: 14px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .form-input::placeholder {
            color: var(--text-muted);
        }
        .form-input:focus {
            border-color: rgba(56, 189, 248, 0.5);
            box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.12);
            outline: none;
        }
        .footer-link {
            font-size: 13px;
            color: var(--text-secondary);
            transition: color var(--transition-base);
        }
        .footer-link:hover {
            color: var(--cyan-accent);
        }
        .hero-title-strip {
            background: linear-gradient(180deg, rgba(15, 23, 42, 0.55) 0%, rgba(8, 14, 28, 0.35) 100%);
            border-bottom: 1px solid rgba(148, 163, 184, 0.12);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }
        .divider-subtle {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(148, 163, 184, 0.2), transparent);
            margin: 1.25rem 0;
        }
        @media (max-width: 768px) {
            .container-main {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .section-spacing {
                padding-top: 2.5rem;
                padding-bottom: 2.5rem;
            }
            .faq-question {
                font-size: 14px;
                padding: 0.85rem 0.2rem;
            }
        }
        @media (min-width: 640px) {
            .container-main {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
            .section-spacing {
                padding-top: 4rem;
                padding-bottom: 4rem;
            }
        }
        @media (min-width: 1024px) {
            .container-main {
                padding-left: 2rem;
                padding-right: 2rem;
            }
            .section-spacing {
                padding-top: 4.5rem;
                padding-bottom: 4.5rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-base: #060B16;
            --bg-deep: #0A1830;
            --blue-primary: #2563EB;
            --blue-bright: #3B82F6;
            --cyan-accent: #38BDF8;
            --green-positive: #22C55E;
            --orange-highlight: #F97316;
            --text-primary: #E6EDF7;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --glass-bg: rgba(15, 23, 42, 0.62);
            --glass-bg-strong: rgba(15, 23, 42, 0.78);
            --glass-border: rgba(148, 163, 184, 0.18);
            --glass-highlight: rgba(255, 255, 255, 0.08);
            --radius-card: 1.25rem;
            --radius-lg: 1.5rem;
            --radius-btn: 9999px;
            --radius-input: 0.75rem;
            --shadow-card: 0 20px 40px -18px rgba(0, 0, 0, 0.55);
            --shadow-glow-blue: 0 0 18px rgba(59, 130, 246, 0.55);
            --shadow-glow-cyan: 0 0 14px rgba(56, 189, 248, 0.35);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-num: 'Inter', 'SF Pro Display', 'Roboto Mono', 'PingFang SC', monospace;
            --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            background: linear-gradient(165deg, #060B16 0%, #0A1830 42%, #081225 72%, #060B16 100%);
            color: var(--text-primary);
            line-height: 1.8;
            min-height: 100vh;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background:
                radial-gradient(ellipse at 20% 15%, rgba(37, 99, 235, 0.10) 0%, transparent 55%),
                radial-gradient(ellipse at 85% 65%, rgba(56, 189, 248, 0.06) 0%, transparent 45%),
                radial-gradient(ellipse at 65% 10%, rgba(34, 197, 94, 0.03) 0%, transparent 40%);
            pointer-events: none;
            z-index: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--cyan-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            transition: all var(--transition-base);
        }
        input,
        select {
            font-family: inherit;
            font-size: 14px;
        }
        .container-main {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
            position: relative;
            z-index: 1;
        }
        @media (min-width: 640px) {
            .container-main {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container-main {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        .section-spacing {
            padding-top: 3rem;
            padding-bottom: 3rem;
        }
        @media (min-width: 768px) {
            .section-spacing {
                padding-top: 4rem;
                padding-bottom: 4rem;
            }
        }
        @media (min-width: 1280px) {
            .section-spacing {
                padding-top: 5rem;
                padding-bottom: 5rem;
            }
        }
        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card), inset 0 1px 0 var(--glass-highlight), inset 0 -1px 0 rgba(0, 0, 0, 0.2);
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .glass-card:hover {
            border-color: rgba(59, 130, 246, 0.42);
            transform: translateY(-4px);
            box-shadow: 0 24px 48px -18px rgba(0, 0, 0, 0.62), inset 0 1px 0 var(--glass-highlight), 0 0 24px rgba(59, 130, 246, 0.18);
        }
        .glass-card-flat {
            background: rgba(15, 23, 42, 0.55);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: linear-gradient(145deg, #3B82F6, #2563EB);
            color: #F0F4FF;
            font-weight: 600;
            font-size: 15px;
            padding: 0.75rem 1.75rem;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(148, 163, 184, 0.25);
            box-shadow: var(--shadow-glow-blue);
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
        }
        .btn-primary:hover {
            box-shadow: 0 0 28px rgba(59, 130, 246, 0.72), 0 8px 20px -8px rgba(37, 99, 235, 0.45);
            transform: translateY(-2px);
            border-color: rgba(255, 255, 255, 0.3);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.4);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: rgba(15, 23, 42, 0.45);
            color: var(--text-primary);
            font-weight: 500;
            font-size: 14px;
            padding: 0.65rem 1.4rem;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(148, 163, 184, 0.28);
            transition: all var(--transition-base);
        }
        .btn-ghost:hover {
            border-color: rgba(56, 189, 248, 0.5);
            box-shadow: var(--shadow-glow-cyan);
            transform: translateY(-2px);
        }
        .btn-ghost:active {
            transform: translateY(1px);
            box-shadow: none;
        }
        .text-gradient {
            background: linear-gradient(135deg, #E6EDF7 0%, #38BDF8 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-link {
            position: relative;
            padding: 0.5rem 1rem;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            letter-spacing: 0.02em;
            transition: color var(--transition-base);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: 0;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, #3B82F6, #38BDF8);
            border-radius: 2px;
            transition: width var(--transition-base);
        }
        .nav-link:hover {
            color: var(--text-primary);
        }
        .nav-link:hover::after {
            width: 60%;
        }
        .nav-link.active {
            color: #38BDF8;
        }
        .nav-link.active::after {
            width: 60%;
        }
        .nav-vertical-divider {
            width: 1px;
            height: 20px;
            background: rgba(148, 163, 184, 0.25);
            margin: 0 0.25rem;
        }
        .data-num {
            font-family: var(--font-num);
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.02em;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            padding: 0.25rem 0.7rem;
            font-size: 12px;
            font-weight: 500;
            border-radius: 9999px;
            border: 1px solid rgba(148, 163, 184, 0.2);
            background: rgba(15, 23, 42, 0.6);
            color: var(--text-secondary);
            letter-spacing: 0.02em;
        }
        .badge-cyan {
            border-color: rgba(56, 189, 248, 0.35);
            color: #38BDF8;
            background: rgba(56, 189, 248, 0.08);
        }
        .badge-green {
            border-color: rgba(34, 197, 94, 0.35);
            color: var(--green-positive);
            background: rgba(34, 197, 94, 0.08);
        }
        .badge-orange {
            border-color: rgba(249, 115, 22, 0.35);
            color: var(--orange-highlight);
            background: rgba(249, 115, 22, 0.08);
        }
        .badge-blue {
            border-color: rgba(59, 130, 246, 0.35);
            color: var(--blue-bright);
            background: rgba(59, 130, 246, 0.08);
        }
        .tag {
            display: inline-block;
            padding: 0.2rem 0.6rem;
            font-size: 12px;
            font-weight: 400;
            border-radius: 0.5rem;
            background: rgba(15, 23, 42, 0.5);
            border: 1px solid rgba(148, 163, 184, 0.2);
            color: var(--text-secondary);
            letter-spacing: 0.02em;
        }
        .card-image-wrapper {
            overflow: hidden;
            border-radius: 0.75rem;
            position: relative;
        }
        .card-image-wrapper img {
            transition: transform var(--transition-base);
            border-radius: 0.75rem;
        }
        .card-image-wrapper:hover img {
            transform: scale(1.05);
        }
        .card-image-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(6, 11, 22, 0.65) 100%);
            border-radius: 0.75rem;
            pointer-events: none;
        }
        .faq-item {
            border: 1px solid rgba(148, 163, 184, 0.15);
            border-radius: 0.85rem;
            overflow: hidden;
            transition: border-color var(--transition-base);
            background: rgba(15, 23, 42, 0.5);
        }
        .faq-item:hover {
            border-color: rgba(59, 130, 246, 0.3);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 1rem 1.2rem;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-primary);
            background: transparent;
            border: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 200ms ease, padding 200ms ease;
            padding: 0 1.2rem;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 240px;
            padding: 0 1.2rem 1.2rem;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid rgba(148, 163, 184, 0.25);
            background: rgba(15, 23, 42, 0.6);
            color: var(--text-secondary);
            transition: all var(--transition-base);
            font-size: 14px;
            font-weight: 600;
        }
        .faq-item.open .faq-icon {
            background: rgba(59, 130, 246, 0.2);
            color: var(--cyan-accent);
            border-color: rgba(56, 189, 248, 0.4);
            transform: rotate(45deg);
        }
        .form-input {
            width: 100%;
            padding: 0.75rem 1rem;
            border-radius: var(--radius-input);
            background: rgba(6, 11, 22, 0.7);
            border: 1px solid rgba(148, 163, 184, 0.25);
            color: var(--text-primary);
            font-size: 14px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .form-input::placeholder {
            color: var(--text-muted);
        }
        .form-input:focus {
            outline: none;
            border-color: rgba(56, 189, 248, 0.55);
            box-shadow: 0 0 12px rgba(56, 189, 248, 0.15);
        }
        .form-select {
            width: 100%;
            padding: 0.75rem 1rem;
            border-radius: var(--radius-input);
            background: rgba(6, 11, 22, 0.7);
            border: 1px solid rgba(148, 163, 184, 0.25);
            color: var(--text-primary);
            font-size: 14px;
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%2394A3B8' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 1rem center;
            padding-right: 2.5rem;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .form-select:focus {
            outline: none;
            border-color: rgba(56, 189, 248, 0.55);
            box-shadow: 0 0 12px rgba(56, 189, 248, 0.15);
        }
        .schedule-row {
            display: grid;
            grid-template-columns: 1fr;
            gap: 0.75rem;
            padding: 1rem 1.2rem;
            border: 1px solid rgba(148, 163, 184, 0.15);
            border-radius: 0.85rem;
            background: rgba(15, 23, 42, 0.5);
            transition: border-color var(--transition-base), background var(--transition-base);
        }
        .schedule-row:hover {
            border-color: rgba(59, 130, 246, 0.3);
            background: rgba(15, 23, 42, 0.7);
        }
        @media (min-width: 768px) {
            .schedule-row {
                grid-template-columns: 100px 1fr 80px;
                align-items: center;
                gap: 1.25rem;
            }
        }
        .trend-bar {
            background: rgba(15, 23, 42, 0.6);
            border-radius: 0.5rem;
            overflow: hidden;
            height: 8px;
            position: relative;
        }
        .trend-bar-fill {
            height: 100%;
            border-radius: 0.5rem;
            background: linear-gradient(90deg, #2563EB, #38BDF8);
            transition: width 400ms ease;
        }
        .breadcrumb-item {
            font-size: 13px;
            color: var(--text-muted);
            transition: color var(--transition-base);
        }
        .breadcrumb-item:hover {
            color: var(--text-secondary);
        }
        .breadcrumb-divider {
            color: var(--text-muted);
            font-size: 13px;
            margin: 0 0.4rem;
        }
        .hero-page-title {
            background: linear-gradient(180deg, rgba(15, 23, 42, 0.7) 0%, rgba(6, 11, 22, 0.5) 100%);
            border-bottom: 1px solid rgba(148, 163, 184, 0.15);
            padding: 2rem 0 1.5rem;
            position: relative;
        }
        .hero-page-title::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent 0%, rgba(56, 189, 248, 0.3) 50%, transparent 100%);
            pointer-events: none;
        }
        .banner-bg {
            background-image: url('/assets/images/325a085d973704e1.webp');
            background-size: cover;
            background-position: center;
            position: absolute;
            inset: 0;
            opacity: 0.15;
            pointer-events: none;
        }
        .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6, 11, 22, 0.55) 0%, rgba(6, 11, 22, 0.85) 100%);
            pointer-events: none;
        }
        .data-bar-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 400;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border-width: 0;
        }
        .mobile-menu {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease;
        }
        .mobile-menu.open {
            max-height: 420px;
        }

/* roulang page: category4 */
:root {
            --bg-base: #060B16;
            --bg-deep: #0A1830;
            --blue-primary: #2563EB;
            --blue-bright: #3B82F6;
            --cyan-accent: #38BDF8;
            --green-positive: #22C55E;
            --orange-highlight: #F97316;
            --text-primary: #E6EDF7;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --glass-bg: rgba(15, 23, 42, 0.62);
            --glass-bg-strong: rgba(15, 23, 42, 0.78);
            --glass-border: rgba(148, 163, 184, 0.18);
            --glass-highlight: rgba(255, 255, 255, 0.08);
            --radius-card: 1.25rem;
            --radius-lg: 1.5rem;
            --radius-btn: 9999px;
            --radius-input: 0.75rem;
            --shadow-card: 0 20px 40px -18px rgba(0, 0, 0, 0.55);
            --shadow-glow-blue: 0 0 18px rgba(59, 130, 246, 0.55);
            --shadow-glow-cyan: 0 0 14px rgba(56, 189, 248, 0.35);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-num: 'Inter', 'SF Pro Display', 'Roboto Mono', 'PingFang SC', monospace;
            --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            background: linear-gradient(165deg, #060B16 0%, #0A1830 42%, #081225 72%, #060B16 100%);
            color: var(--text-primary);
            line-height: 1.8;
            min-height: 100vh;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background:
                radial-gradient(ellipse at 20% 15%, rgba(37, 99, 235, 0.12) 0%, transparent 55%),
                radial-gradient(ellipse at 85% 65%, rgba(56, 189, 248, 0.08) 0%, transparent 45%),
                radial-gradient(ellipse at 65% 10%, rgba(34, 197, 94, 0.04) 0%, transparent 40%);
            pointer-events: none;
            z-index: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--cyan-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            transition: all var(--transition-base);
        }
        input,
        select {
            font-family: inherit;
            font-size: 14px;
        }
        .container-main {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
            position: relative;
            z-index: 1;
        }
        @media (min-width: 640px) {
            .container-main {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container-main {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        .section-spacing {
            padding-top: 3.5rem;
            padding-bottom: 3.5rem;
        }
        @media (min-width: 768px) {
            .section-spacing {
                padding-top: 4.5rem;
                padding-bottom: 4.5rem;
            }
        }
        @media (min-width: 1024px) {
            .section-spacing {
                padding-top: 5rem;
                padding-bottom: 5rem;
            }
        }
        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card), inset 0 1px 0 var(--glass-highlight), inset 0 -1px 0 rgba(0, 0, 0, 0.2);
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .glass-card:hover {
            border-color: rgba(59, 130, 246, 0.42);
            transform: translateY(-4px);
            box-shadow: 0 24px 48px -18px rgba(0, 0, 0, 0.62), inset 0 1px 0 var(--glass-highlight), 0 0 24px rgba(59, 130, 246, 0.18);
        }
        .glass-card-flat {
            background: rgba(15, 23, 42, 0.55);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: linear-gradient(145deg, #3B82F6, #2563EB);
            color: #F0F4FF;
            font-weight: 600;
            font-size: 15px;
            padding: 0.75rem 1.75rem;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(148, 163, 184, 0.25);
            box-shadow: var(--shadow-glow-blue);
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
        }
        .btn-primary:hover {
            box-shadow: 0 0 28px rgba(59, 130, 246, 0.72), 0 8px 20px -8px rgba(37, 99, 235, 0.45);
            transform: translateY(-2px);
            border-color: rgba(255, 255, 255, 0.3);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.4);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            border: 1px solid rgba(148, 163, 184, 0.3);
            color: #E6EDF7;
            font-weight: 500;
            font-size: 15px;
            padding: 0.7rem 1.6rem;
            border-radius: var(--radius-btn);
            transition: all var(--transition-base);
        }
        .btn-ghost:hover {
            border-color: rgba(56, 189, 248, 0.55);
            box-shadow: 0 0 14px rgba(56, 189, 248, 0.22);
            transform: translateY(-2px);
        }
        .btn-ghost:active {
            transform: translateY(1px);
            box-shadow: none;
        }
        .text-gradient {
            background: linear-gradient(165deg, #F0F4FF 0%, #94A3B8 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .nav-link {
            position: relative;
            padding: 0.45rem 0.75rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 9999px;
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: #FFFFFF;
            background: rgba(59, 130, 246, 0.12);
        }
        .nav-link.active {
            color: #FFFFFF;
            background: rgba(59, 130, 246, 0.18);
            box-shadow: inset 0 0 0 1px rgba(59, 130, 246, 0.35), 0 0 12px rgba(59, 130, 246, 0.15);
        }
        .nav-vertical-divider {
            width: 1px;
            height: 1.1rem;
            background: rgba(148, 163, 184, 0.35);
            margin: 0 0.15rem;
            flex-shrink: 0;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            font-size: 0.72rem;
            font-weight: 500;
            padding: 0.2rem 0.7rem;
            border-radius: 9999px;
            border: 1px solid rgba(148, 163, 184, 0.22);
            background: rgba(15, 23, 42, 0.5);
            color: var(--text-secondary);
            letter-spacing: 0.03em;
            transition: all var(--transition-base);
        }
        .tag-blue {
            border-color: rgba(59, 130, 246, 0.4);
            color: #93C5FD;
            background: rgba(37, 99, 235, 0.14);
        }
        .tag-cyan {
            border-color: rgba(56, 189, 248, 0.35);
            color: #7DD3FC;
            background: rgba(56, 189, 248, 0.1);
        }
        .tag-green {
            border-color: rgba(34, 197, 94, 0.35);
            color: #86EFAC;
            background: rgba(34, 197, 94, 0.12);
        }
        .tag-orange {
            border-color: rgba(249, 115, 22, 0.35);
            color: #FDBA74;
            background: rgba(249, 115, 22, 0.12);
        }
        .breadcrumb-link {
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: color var(--transition-base);
        }
        .breadcrumb-link:hover {
            color: var(--cyan-accent);
        }
        .breadcrumb-current {
            font-size: 0.8rem;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .form-input {
            width: 100%;
            background: rgba(6, 11, 22, 0.65);
            border: 1px solid rgba(148, 163, 184, 0.25);
            border-radius: var(--radius-input);
            color: #E6EDF7;
            padding: 0.7rem 1rem;
            transition: all var(--transition-base);
            font-size: 14px;
        }
        .form-input::placeholder {
            color: #64748B;
        }
        .form-input:focus {
            outline: none;
            border-color: rgba(56, 189, 248, 0.55);
            box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.12), 0 0 14px rgba(56, 189, 248, 0.15);
        }
        .form-select {
            width: 100%;
            background: rgba(6, 11, 22, 0.65);
            border: 1px solid rgba(148, 163, 184, 0.25);
            border-radius: var(--radius-input);
            color: #E6EDF7;
            padding: 0.7rem 1rem;
            transition: all var(--transition-base);
            font-size: 14px;
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='7' viewBox='0 0 12 7'%3E%3Cpath fill='%2394A3B8' d='M6 7L0 0h12z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 1rem center;
        }
        .form-select:focus {
            outline: none;
            border-color: rgba(56, 189, 248, 0.55);
            box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.12), 0 0 14px rgba(56, 189, 248, 0.15);
        }
        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--cyan-accent);
            text-transform: uppercase;
        }
        .hero-kicker-line {
            display: inline-block;
            width: 2rem;
            height: 1px;
            background: linear-gradient(90deg, var(--cyan-accent), transparent);
        }
        .article-card-image {
            overflow: hidden;
            border-radius: 0.75rem;
            position: relative;
            aspect-ratio: 16 / 9;
            background: #0A1830;
        }
        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 500ms cubic-bezier(0.4, 0, 0.2, 1);
        }
        .article-card:hover .article-card-image img {
            transform: scale(1.05);
        }
        .faq-item {
            border: 1px solid rgba(148, 163, 184, 0.16);
            border-radius: var(--radius-card);
            background: rgba(15, 23, 42, 0.45);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: all var(--transition-base);
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.35);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.1rem 1.4rem;
            font-weight: 600;
            font-size: 0.95rem;
            color: #E6EDF7;
            background: transparent;
            border: none;
            cursor: pointer;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 200ms cubic-bezier(0.4, 0, 0.2, 1), padding 200ms ease;
            padding: 0 1.4rem;
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.75;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.4rem 1.2rem 1.4rem;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 1.6rem;
            height: 1.6rem;
            border-radius: 9999px;
            background: rgba(56, 189, 248, 0.12);
            border: 1px solid rgba(56, 189, 248, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: var(--cyan-accent);
            transition: all var(--transition-base);
        }
        .faq-item.open .faq-icon {
            background: rgba(56, 189, 248, 0.25);
            transform: rotate(45deg);
        }
        .data-bar {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            width: 100%;
        }
        .data-bar-track {
            flex: 1;
            height: 0.4rem;
            border-radius: 9999px;
            background: rgba(148, 163, 184, 0.15);
            overflow: hidden;
        }
        .data-bar-fill {
            height: 100%;
            border-radius: 9999px;
            background: linear-gradient(90deg, #2563EB, #38BDF8);
            transition: width 600ms cubic-bezier(0.4, 0, 0.2, 1);
        }
        .data-bar-fill.green {
            background: linear-gradient(90deg, #16A34A, #22C55E);
        }
        .data-bar-fill.orange {
            background: linear-gradient(90deg, #EA580C, #F97316);
        }
        .timeline-dot {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 0.55rem;
            height: 0.55rem;
            border-radius: 9999px;
            background: var(--cyan-accent);
            box-shadow: 0 0 10px rgba(56, 189, 248, 0.6);
            flex-shrink: 0;
        }
        .news-card-large {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }
        @media (min-width: 768px) {
            .news-card-large {
                grid-template-columns: 1.1fr 1fr;
                align-items: center;
            }
        }
        .editor-pick {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .editor-pick-item {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            padding: 0.9rem 1rem;
            border-radius: var(--radius-card);
            background: rgba(15, 23, 42, 0.4);
            border: 1px solid rgba(148, 163, 184, 0.14);
            transition: all var(--transition-base);
        }
        .editor-pick-item:hover {
            border-color: rgba(59, 130, 246, 0.35);
            background: rgba(15, 23, 42, 0.6);
        }
        .editor-pick-thumb {
            width: 5rem;
            height: 3.5rem;
            border-radius: 0.6rem;
            overflow: hidden;
            flex-shrink: 0;
            background: #0A1830;
        }
        .editor-pick-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .speed-line {
            position: absolute;
            pointer-events: none;
            border-top: 1px solid rgba(56, 189, 248, 0.12);
            border-radius: 50%;
            transform: rotate(-18deg);
        }
        .sub-heading {
            font-size: 1.75rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: #FFFFFF;
            line-height: 1.4;
        }
        @media (min-width: 768px) {
            .sub-heading {
                font-size: 2rem;
            }
        }
        .section-title-group {
            margin-bottom: 2.25rem;
        }
        .section-title-group .eyebrow {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--cyan-accent);
            margin-bottom: 0.5rem;
        }
        .section-title-group .eyebrow-line {
            display: inline-block;
            width: 1.8rem;
            height: 1px;
            background: linear-gradient(90deg, var(--cyan-accent), transparent);
        }

/* roulang page: category5 */
:root {
            --bg-base: #060B16;
            --bg-deep: #0A1830;
            --blue-primary: #2563EB;
            --blue-bright: #3B82F6;
            --cyan-accent: #38BDF8;
            --green-positive: #22C55E;
            --orange-highlight: #F97316;
            --text-primary: #E6EDF7;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --glass-bg: rgba(15, 23, 42, 0.62);
            --glass-bg-strong: rgba(15, 23, 42, 0.78);
            --glass-border: rgba(148, 163, 184, 0.18);
            --glass-highlight: rgba(255, 255, 255, 0.08);
            --radius-card: 1.25rem;
            --radius-lg: 1.5rem;
            --radius-btn: 9999px;
            --radius-input: 0.75rem;
            --shadow-card: 0 20px 40px -18px rgba(0, 0, 0, 0.55);
            --shadow-glow-blue: 0 0 18px rgba(59, 130, 246, 0.55);
            --shadow-glow-cyan: 0 0 14px rgba(56, 189, 248, 0.35);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-num: 'Inter', 'SF Pro Display', 'Roboto Mono', 'PingFang SC', monospace;
            --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            background: linear-gradient(165deg, #060B16 0%, #0A1830 42%, #081225 72%, #060B16 100%);
            color: var(--text-primary);
            line-height: 1.8;
            min-height: 100vh;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }
        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background: radial-gradient(ellipse at 20% 15%, rgba(37, 99, 235, 0.12) 0%, transparent 55%), radial-gradient(ellipse at 85% 65%, rgba(56, 189, 248, 0.08) 0%, transparent 45%), radial-gradient(ellipse at 65% 10%, rgba(34, 197, 94, 0.04) 0%, transparent 40%);
            pointer-events: none;
            z-index: 0;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--cyan-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            transition: all var(--transition-base);
            border: none;
            background: none;
        }
        input,
        select {
            font-family: inherit;
            font-size: 14px;
        }
        .container-main {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
            position: relative;
            z-index: 1;
        }
        @media (min-width: 640px) {
            .container-main {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container-main {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        .section-spacing {
            padding-top: 3.5rem;
            padding-bottom: 3.5rem;
        }
        @media (min-width: 768px) {
            .section-spacing {
                padding-top: 4.5rem;
                padding-bottom: 4.5rem;
            }
        }
        @media (min-width: 1024px) {
            .section-spacing {
                padding-top: 5rem;
                padding-bottom: 5rem;
            }
        }
        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card), inset 0 1px 0 var(--glass-highlight), inset 0 -1px 0 rgba(0, 0, 0, 0.2);
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .glass-card:hover {
            border-color: rgba(59, 130, 246, 0.42);
            transform: translateY(-4px);
            box-shadow: 0 24px 48px -18px rgba(0, 0, 0, 0.62), inset 0 1px 0 var(--glass-highlight), 0 0 24px rgba(59, 130, 246, 0.18);
        }
        .glass-card-flat {
            background: rgba(15, 23, 42, 0.55);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: linear-gradient(145deg, #3B82F6, #2563EB);
            color: #F0F4FF;
            font-weight: 600;
            font-size: 15px;
            padding: 0.75rem 1.75rem;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(148, 163, 184, 0.25);
            box-shadow: var(--shadow-glow-blue);
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
        }
        .btn-primary:hover {
            box-shadow: 0 0 28px rgba(59, 130, 246, 0.72), 0 8px 20px -8px rgba(37, 99, 235, 0.45);
            transform: translateY(-2px);
            border-color: rgba(255, 255, 255, 0.3);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.4);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: rgba(15, 23, 42, 0.35);
            color: var(--text-primary);
            font-weight: 500;
            font-size: 14px;
            padding: 0.65rem 1.5rem;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(148, 163, 184, 0.25);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all var(--transition-base);
        }
        .btn-ghost:hover {
            border-color: rgba(56, 189, 248, 0.45);
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.2);
            transform: translateY(-2px);
            color: #FFFFFF;
        }
        .btn-ghost:active {
            transform: translateY(1px);
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(6, 11, 22, 0.78);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(148, 163, 184, 0.12);
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: 0 8px 32px -12px rgba(0, 0, 0, 0.45);
        }
        .header-top-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 0.5rem;
            padding-bottom: 0.5rem;
            font-size: 12px;
            color: var(--text-muted);
            border-bottom: 1px solid rgba(148, 163, 184, 0.08);
            letter-spacing: 0.04em;
        }
        .header-top-bar .live-dot {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }
        .header-top-bar .live-indicator {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--green-positive);
            box-shadow: 0 0 8px rgba(34, 197, 94, 0.6);
            animation: pulse-dot 1.8s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.35);
            }
        }
        .header-main-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 0.65rem;
            padding-bottom: 0.65rem;
            gap: 1.5rem;
        }
        .brand-logo {
            font-size: 1.75rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #E6EDF7 0%, #93C5FD 45%, #38BDF8 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
            flex-shrink: 0;
            line-height: 1.2;
        }
        .brand-logo:hover {
            filter: brightness(1.15);
        }
        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 0.4rem 0.8rem;
            border-radius: 9999px;
            transition: all var(--transition-base);
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: #FFFFFF;
            background: rgba(59, 130, 246, 0.12);
        }
        .nav-link.active {
            color: #FFFFFF;
            background: rgba(59, 130, 246, 0.18);
            box-shadow: inset 0 0 0 1px rgba(59, 130, 246, 0.3);
        }
        .nav-vertical-divider {
            width: 1px;
            height: 18px;
            background: rgba(148, 163, 184, 0.2);
            margin: 0 0.25rem;
            flex-shrink: 0;
            display: inline-block;
        }
        .mobile-menu-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            border: 1px solid rgba(148, 163, 184, 0.2);
            background: rgba(15, 23, 42, 0.5);
            color: var(--text-primary);
            font-size: 1.5rem;
            line-height: 1;
            transition: all var(--transition-base);
        }
        .mobile-menu-toggle:hover {
            border-color: rgba(59, 130, 246, 0.4);
            background: rgba(15, 23, 42, 0.7);
        }
        .mobile-nav {
            display: none;
            background: rgba(6, 11, 22, 0.96);
            border-top: 1px solid rgba(148, 163, 184, 0.1);
            padding: 1rem 0;
            animation: slide-down 220ms ease-out;
        }
        .mobile-nav.open {
            display: block;
        }
        @keyframes slide-down {
            from {
                opacity: 0;
                transform: translateY(-8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .mobile-nav a {
            display: block;
            padding: 0.7rem 1.5rem;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-left: 3px solid transparent;
            transition: all var(--transition-base);
        }
        .mobile-nav a:hover {
            color: #FFFFFF;
            background: rgba(59, 130, 246, 0.08);
            border-left-color: var(--cyan-accent);
        }
        .mobile-nav a.active {
            color: #FFFFFF;
            background: rgba(59, 130, 246, 0.15);
            border-left-color: var(--blue-bright);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-muted);
            padding: 1rem 0 0;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-base);
        }
        .breadcrumb a:hover {
            color: var(--cyan-accent);
        }
        .breadcrumb .separator {
            color: rgba(148, 163, 184, 0.4);
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 500;
        }
        .category-hero {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.85), rgba(6, 11, 22, 0.9)), url('/assets/images/325a085d973704e1.webp') center/cover no-repeat;
            border: 1px solid var(--glass-border);
            box-shadow: var(--shadow-card);
            margin-top: 1rem;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(6, 11, 22, 0.6) 0%, transparent 55%);
            pointer-events: none;
            z-index: 0;
        }
        .category-hero>* {
            position: relative;
            z-index: 1;
        }
        .category-hero h1 {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: #FFFFFF;
            margin: 0 0 0.5rem;
            line-height: 1.3;
        }
        @media (min-width: 768px) {
            .category-hero h1 {
                font-size: 32px;
            }
        }
        @media (min-width: 1024px) {
            .category-hero h1 {
                font-size: 36px;
            }
        }
        .category-hero .hero-sub {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 720px;
            margin: 0;
            line-height: 1.75;
        }
        .category-intro {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 820px;
            margin: 0;
        }
        .data-indicator-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
        }
        @media (min-width: 768px) {
            .data-indicator-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 1.25rem;
            }
        }
        .indicator-card {
            padding: 1.25rem 1.5rem;
            border-radius: var(--radius-card);
            background: rgba(15, 23, 42, 0.55);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: all var(--transition-base);
        }
        .indicator-card:hover {
            border-color: rgba(59, 130, 246, 0.4);
            box-shadow: 0 0 20px rgba(59, 130, 246, 0.15);
        }
        .indicator-card .ind-label {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 0.5rem;
        }
        .indicator-card .ind-value {
            font-family: var(--font-num);
            font-size: 2rem;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }
        .indicator-card .ind-change {
            font-size: 12px;
            margin-top: 0.35rem;
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .ind-change.up {
            color: var(--green-positive);
        }
        .ind-change.down {
            color: var(--orange-highlight);
        }
        .tag {
            display: inline-block;
            padding: 0.2rem 0.7rem;
            font-size: 12px;
            font-weight: 500;
            border-radius: 9999px;
            background: rgba(59, 130, 246, 0.14);
            color: #93C5FD;
            border: 1px solid rgba(59, 130, 246, 0.25);
            line-height: 1.6;
            white-space: nowrap;
        }
        .tag-green {
            background: rgba(34, 197, 94, 0.14);
            color: #86EFAC;
            border-color: rgba(34, 197, 94, 0.25);
        }
        .tag-orange {
            background: rgba(249, 115, 22, 0.14);
            color: #FDBA74;
            border-color: rgba(249, 115, 22, 0.25);
        }
        .tag-cyan {
            background: rgba(56, 189, 248, 0.14);
            color: #67E8F9;
            border-color: rgba(56, 189, 248, 0.25);
        }
        .data-list-card {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            padding: 1.25rem;
            border-radius: var(--radius-card);
            background: rgba(15, 23, 42, 0.55);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: all var(--transition-base);
            height: 100%;
        }
        .data-list-card:hover {
            border-color: rgba(59, 130, 246, 0.42);
            transform: translateY(-4px);
            box-shadow: 0 20px 40px -16px rgba(0, 0, 0, 0.55), 0 0 20px rgba(59, 130, 246, 0.15);
        }
        .data-list-card .card-img {
            border-radius: 0.75rem;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: #0A1830;
        }
        .data-list-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 300ms ease;
        }
        .data-list-card:hover .card-img img {
            transform: scale(1.04);
        }
        .data-list-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0;
            line-height: 1.45;
        }
        .data-list-card .card-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .data-list-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-muted);
            margin-top: auto;
        }
        .table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-card);
            border: 1px solid var(--glass-border);
            background: rgba(15, 23, 42, 0.55);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            min-width: 640px;
        }
        .data-table th {
            text-align: left;
            padding: 0.9rem 1.25rem;
            font-weight: 600;
            font-size: 13px;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(148, 163, 184, 0.12);
            white-space: nowrap;
            letter-spacing: 0.03em;
        }
        .data-table td {
            padding: 0.8rem 1.25rem;
            border-bottom: 1px solid rgba(148, 163, 184, 0.06);
            color: var(--text-primary);
            font-variant-numeric: tabular-nums;
            white-space: nowrap;
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tbody tr:hover {
            background: rgba(59, 130, 246, 0.06);
        }
        .data-table .team-cell {
            font-weight: 500;
            color: #FFFFFF;
        }
        .data-table .change-up {
            color: var(--green-positive);
            font-weight: 600;
        }
        .data-table .change-down {
            color: var(--orange-highlight);
            font-weight: 600;
        }
        .data-table .change-flat {
            color: var(--text-muted);
        }
        .feature-wide-card {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
            padding: 1.25rem;
            border-radius: var(--radius-lg);
            background: rgba(15, 23, 42, 0.6);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: all var(--transition-base);
        }
        @media (min-width: 768px) {
            .feature-wide-card {
                grid-template-columns: 1.2fr 1fr;
                padding: 1.75rem;
                gap: 2rem;
            }
        }
        .feature-wide-card:hover {
            border-color: rgba(59, 130, 246, 0.4);
            box-shadow: 0 24px 48px -18px rgba(0, 0, 0, 0.55), 0 0 24px rgba(59, 130, 246, 0.12);
        }
        .feature-wide-card .fw-img {
            border-radius: 0.75rem;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: #0A1830;
        }
        .feature-wide-card .fw-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 300ms ease;
        }
        .feature-wide-card:hover .fw-img img {
            transform: scale(1.03);
        }
        .article-mini-card {
            display: flex;
            gap: 1rem;
            padding: 1rem;
            border-radius: var(--radius-card);
            background: rgba(15, 23, 42, 0.45);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: all var(--transition-base);
        }
        .article-mini-card:hover {
            border-color: rgba(59, 130, 246, 0.35);
            box-shadow: 0 0 16px rgba(59, 130, 246, 0.1);
            transform: translateY(-2px);
        }
        .article-mini-card .am-img {
            width: 72px;
            height: 72px;
            border-radius: 0.6rem;
            overflow: hidden;
            flex-shrink: 0;
            background: #0A1830;
        }
        .article-mini-card .am-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .article-mini-card .am-body h4 {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 0.25rem;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-mini-card .am-body p {
            font-size: 12px;
            color: var(--text-muted);
            margin: 0;
        }
        .tool-entry-card {
            padding: 1.25rem 1.5rem;
            border-radius: var(--radius-card);
            background: rgba(15, 23, 42, 0.5);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            text-align: center;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.5rem;
        }
        .tool-entry-card:hover {
            border-color: rgba(56, 189, 248, 0.4);
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.15);
            transform: translateY(-3px);
        }
        .tool-entry-card .tool-icon {
            font-size: 1.75rem;
            line-height: 1;
            margin-bottom: 0.25rem;
        }
        .tool-entry-card h4 {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0;
        }
        .tool-entry-card p {
            font-size: 12px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }
        .subscribe-form-card {
            padding: 2rem;
            border-radius: var(--radius-lg);
            background: linear-gradient(145deg, rgba(15, 23, 42, 0.75), rgba(6, 11, 22, 0.85));
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: var(--shadow-card), inset 0 1px 0 var(--glass-highlight);
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }
        @media (min-width: 768px) {
            .subscribe-form-card {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
                padding: 2.25rem;
            }
        }
        .subscribe-form-card .sf-info h3 {
            font-size: 20px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 0.5rem;
            line-height: 1.4;
        }
        .subscribe-form-card .sf-info p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.75;
        }
        .subscribe-form-card .sf-fields {
            display: flex;
            flex-direction: column;
            gap: 0.85rem;
        }
        .subscribe-form-card input,
        .subscribe-form-card select {
            background: rgba(6, 11, 22, 0.6);
            border: 1px solid rgba(148, 163, 184, 0.2);
            border-radius: var(--radius-input);
            padding: 0.7rem 1.1rem;
            color: var(--text-primary);
            font-size: 14px;
            transition: all var(--transition-base);
            width: 100%;
            outline: none;
        }
        .subscribe-form-card input:focus,
        .subscribe-form-card select:focus {
            border-color: rgba(56, 189, 248, 0.5);
            box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.12);
        }
        .subscribe-form-card input::placeholder {
            color: var(--text-muted);
        }
        .subscribe-form-card select option {
            background: #0A1830;
            color: var(--text-primary);
        }
        .form-success-msg {
            display: none;
            padding: 0.75rem 1rem;
            border-radius: 0.75rem;
            background: rgba(34, 197, 94, 0.12);
            border: 1px solid rgba(34, 197, 94, 0.3);
            color: #86EFAC;
            font-size: 13px;
            text-align: center;
            line-height: 1.5;
        }
        .form-success-msg.visible {
            display: block;
            animation: fade-in 300ms ease;
        }
        @keyframes fade-in {
            from {
                opacity: 0;
                transform: translateY(6px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .tip-box {
            padding: 1.25rem 1.5rem;
            border-radius: var(--radius-card);
            background: rgba(15, 23, 42, 0.5);
            border: 1px solid rgba(56, 189, 248, 0.2);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .tip-box .tip-item {
            display: flex;
            gap: 0.75rem;
            align-items: flex-start;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .tip-box .tip-item .tip-num {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: rgba(56, 189, 248, 0.15);
            border: 1px solid rgba(56, 189, 248, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 700;
            color: #67E8F9;
            margin-top: 2px;
        }
        .text-gradient {
            background: linear-gradient(135deg, #E6EDF7 0%, #93C5FD 45%, #38BDF8 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-divider {
            border: none;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(148, 163, 184, 0.15), transparent);
            margin: 0;
        }
        @media (max-width: 1023px) {
            .desktop-nav {
                display: none;
            }
        }
        @media (min-width: 1024px) {
            .mobile-menu-toggle {
                display: none;
            }
            .mobile-nav {
                display: none !important;
            }
        }
        footer {
            position: relative;
            z-index: 10;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            background: rgba(6, 11, 22, 0.9);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            margin-top: 2rem;
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            padding-top: 2.5rem;
            padding-bottom: 2.5rem;
        }
        @media (min-width: 768px) {
            footer .footer-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 2rem;
            }
        }
        footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 1.5rem;
            padding-bottom: 1.5rem;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem;
            font-size: 12px;
            color: var(--text-muted);
        }
        @media (min-width: 640px) {
            footer .footer-bottom {
                flex-direction: row;
            }
        }
        footer a {
            color: var(--text-secondary);
            transition: color var(--transition-base);
        }
        footer a:hover {
            color: var(--cyan-accent);
        }