/* roulang page: index */
:root {
            --brand-primary: #1a2a4a;
            --brand-primary-light: #243b65;
            --brand-secondary: #c99a3f;
            --brand-secondary-light: #e8bd6b;
            --brand-bg: #f7f8fc;
            --brand-surface: #ffffff;
            --brand-text: #2d3047;
            --brand-text-soft: #5f6580;
            --brand-text-muted: #8a90a6;
            --brand-border: #e3e6ee;
            --brand-border-light: #edf0f5;
            --brand-shadow-sm: 0 2px 8px rgba(26,42,74,0.06);
            --brand-shadow-md: 0 8px 28px rgba(26,42,74,0.1);
            --brand-shadow-lg: 0 18px 48px rgba(26,42,74,0.14);
            --brand-radius-sm: 8px;
            --brand-radius-md: 14px;
            --brand-radius-lg: 22px;
            --brand-radius-xl: 32px;
            --brand-font: "Inter","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
            --brand-transition: 0.22s cubic-bezier(0.25,0.46,0.45,0.94);
            --brand-container: 1200px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--brand-font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--brand-text);
            background-color: var(--brand-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--brand-primary);
            text-decoration: none;
            transition: color var(--brand-transition);
        }
        a:hover,
        a:focus {
            color: var(--brand-secondary);
            outline: none;
        }
        a:focus-visible {
            outline: 2px solid var(--brand-secondary);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 1rem;
        }
        .brand-container {
            max-width: var(--brand-container);
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        @media (min-width: 640px) {
            .brand-container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        @media (min-width: 1024px) {
            .brand-container {
                padding-left: 2.5rem;
                padding-right: 2.5rem;
            }
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--brand-border-light);
            box-shadow: 0 1px 12px rgba(26,42,74,0.04);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 0.9rem 0;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--brand-primary);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .brand-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg,var(--brand-primary),var(--brand-primary-light));
            color: var(--brand-secondary-light);
            font-size: 1.15rem;
            flex-shrink: 0;
        }
        .header-search {
            flex: 1;
            max-width: 380px;
            display: flex;
            align-items: center;
            background: var(--brand-bg);
            border: 1px solid var(--brand-border);
            border-radius: 999px;
            padding: 0.35rem 0.35rem 0.35rem 1rem;
            transition: border-color var(--brand-transition), box-shadow var(--brand-transition);
        }
        .header-search:focus-within {
            border-color: var(--brand-secondary);
            box-shadow: 0 0 0 3px rgba(201,154,63,0.14);
        }
        .header-search input {
            flex: 1;
            border: none;
            background: transparent;
            outline: none;
            color: var(--brand-text);
            font-size: 0.95rem;
            min-width: 0;
        }
        .header-search input::placeholder {
            color: var(--brand-text-muted);
        }
        .header-search button {
            background: var(--brand-primary);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 0.5rem 1.2rem;
            font-size: 0.9rem;
            cursor: pointer;
            font-weight: 600;
            transition: background var(--brand-transition), transform var(--brand-transition);
            white-space: nowrap;
        }
        .header-search button:hover {
            background: var(--brand-primary-light);
            transform: translateY(-1px);
        }
        .header-cta {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--brand-secondary);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 0.55rem 1.25rem;
            border-radius: 999px;
            transition: background var(--brand-transition), transform var(--brand-transition), box-shadow var(--brand-transition);
            box-shadow: 0 4px 14px rgba(201,154,63,0.3);
        }
        .header-cta:hover,
        .header-cta:focus {
            background: #b88933;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 22px rgba(201,154,63,0.38);
        }
        .header-mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--brand-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.4rem;
            line-height: 1;
        }
        .header-nav {
            border-top: 1px solid var(--brand-border-light);
            padding: 0.6rem 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--brand-border) transparent;
        }
        .header-nav::-webkit-scrollbar {
            height: 4px;
        }
        .header-nav::-webkit-scrollbar-thumb {
            background: var(--brand-border);
            border-radius: 999px;
        }
        .nav-tab {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            padding: 0.55rem 1.15rem;
            border-radius: 999px;
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--brand-text-soft);
            white-space: nowrap;
            transition: background var(--brand-transition), color var(--brand-transition), box-shadow var(--brand-transition);
            border: 1px solid transparent;
        }
        .nav-tab:hover,
        .nav-tab:focus {
            background: var(--brand-bg);
            color: var(--brand-primary);
        }
        .nav-tab.active {
            background: var(--brand-primary);
            color: #fff;
            border-color: var(--brand-primary);
            box-shadow: 0 4px 12px rgba(26,42,74,0.18);
        }
        @media (max-width: 767px) {
            .header-top {
                flex-wrap: wrap;
                gap: 0.8rem;
            }
            .header-search {
                order: 3;
                flex: 1 1 100%;
                max-width: 100%;
            }
            .header-cta {
                display: none;
            }
            .header-mobile-toggle {
                display: inline-flex;
            }
            .header-nav {
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 0.3rem;
                padding: 0.8rem 0;
            }
            .header-nav.is-open {
                display: flex;
            }
            .nav-tab {
                justify-content: center;
                width: 100%;
            }
        }

        /* ========== Sections ========== */
        .site-section {
            padding: 4.5rem 0;
        }
        .site-section--alt {
            background: #fff;
        }
        .site-section--tight {
            padding: 3rem 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--brand-secondary);
            background: rgba(201,154,63,0.12);
            padding: 0.4rem 0.9rem;
            border-radius: 999px;
            margin-bottom: 1rem;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--brand-primary);
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--brand-text-soft);
            max-width: 700px;
            line-height: 1.85;
        }
        @media (max-width: 767px) {
            .site-section {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.55rem;
            }
            .section-desc {
                font-size: 0.98rem;
            }
        }

        /* ========== Buttons ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.75rem 1.75rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: background var(--brand-transition), transform var(--brand-transition), box-shadow var(--brand-transition);
            text-align: center;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--brand-primary);
            color: #fff;
            box-shadow: 0 6px 20px rgba(26,42,74,0.22);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--brand-primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(26,42,74,0.28);
        }
        .btn-secondary {
            background: var(--brand-secondary);
            color: #fff;
            box-shadow: 0 6px 20px rgba(201,154,63,0.26);
        }
        .btn-secondary:hover,
        .btn-secondary:focus {
            background: #b88933;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(201,154,63,0.32);
        }
        .btn-outline {
            background: transparent;
            color: var(--brand-primary);
            border: 2px solid var(--brand-border);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            border-color: var(--brand-primary);
            background: var(--brand-bg);
            color: var(--brand-primary);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 0.5rem 1.15rem;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 0.9rem 2.1rem;
            font-size: 1.05rem;
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            background: linear-gradient(140deg, #0f1d3a 0%, #1a2a4a 45%, #243b65 100%);
            color: #fff;
            padding: 5rem 0 5.5rem;
            overflow: hidden;
        }
        .hero::before {
            content: "";
            position: absolute;
            top: -30%;
            right: -15%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(201,154,63,0.22) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: "";
            position: absolute;
            bottom: -40%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(26,42,74,0.6) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero .brand-container {
            position: relative;
            z-index: 2;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 3rem;
            align-items: center;
        }
        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(201,154,63,0.18);
            color: var(--brand-secondary-light);
            padding: 0.4rem 1rem;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1.25rem;
            border: 1px solid rgba(201,154,63,0.3);
        }
        .hero-content h1 {
            font-size: 2.7rem;
            font-weight: 700;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 1.2rem;
            letter-spacing: -0.02em;
        }
        .hero-content .hero-desc {
            font-size: 1.08rem;
            line-height: 1.85;
            color: rgba(255,255,255,0.85);
            max-width: 540px;
            margin-bottom: 1.75rem;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            align-items: center;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 1.75rem;
            margin-top: 2.2rem;
            padding-top: 1.75rem;
            border-top: 1px solid rgba(255,255,255,0.18);
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stat .stat-num {
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--brand-secondary-light);
            line-height: 1.2;
        }
        .hero-stat .stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
        }
        .hero-panel {
            background: rgba(255,255,255,0.08);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255,255,255,0.16);
            border-radius: var(--brand-radius-lg);
            padding: 1.8rem;
            box-shadow: 0 24px 60px rgba(0,0,0,0.18);
        }
        .hero-panel .panel-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1.25rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .quiz-options {
            display: flex;
            flex-direction: column;
            gap: 0.7rem;
            margin-bottom: 1.25rem;
        }
        .quiz-option {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.14);
            border-radius: var(--brand-radius-sm);
            padding: 0.75rem 1rem;
            cursor: pointer;
            transition: background var(--brand-transition), border-color var(--brand-transition), transform var(--brand-transition);
            color: #fff;
            font-size: 0.92rem;
        }
        .quiz-option:hover,
        .quiz-option:focus {
            background: rgba(255,255,255,0.12);
            border-color: rgba(201,154,63,0.5);
            transform: translateX(3px);
        }
        .quiz-option .quiz-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--brand-secondary);
            flex-shrink: 0;
        }
        .quiz-preview {
            background: rgba(26,42,74,0.6);
            border-radius: var(--brand-radius-sm);
            padding: 1rem 1.25rem;
            color: rgba(255,255,255,0.9);
            font-size: 0.9rem;
            margin-bottom: 1.25rem;
            min-height: 72px;
            border: 1px dashed rgba(255,255,255,0.2);
            display: flex;
            align-items: center;
        }
        .quiz-preview .preview-icon {
            font-size: 1.5rem;
            color: var(--brand-secondary-light);
            margin-right: 0.7rem;
            flex-shrink: 0;
        }
        @media (max-width: 1023px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .hero {
                padding: 3.5rem 0 4rem;
            }
        }
        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-content .hero-desc {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 1.25rem;
            }
            .hero-stat .stat-num {
                font-size: 1.35rem;
            }
        }

        /* ========== Stats Strip ========== */
        .stats-strip {
            background: #fff;
            border-bottom: 1px solid var(--brand-border-light);
            padding: 2rem 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
            text-align: center;
        }
        .stat-card {
            background: var(--brand-bg);
            border-radius: var(--brand-radius-md);
            padding: 1.4rem 1.2rem;
            transition: transform var(--brand-transition), box-shadow var(--brand-transition);
        }
        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--brand-shadow-md);
        }
        .stat-card .stat-icon {
            font-size: 1.8rem;
            color: var(--brand-secondary);
            margin-bottom: 0.6rem;
        }
        .stat-card .stat-value {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--brand-primary);
            line-height: 1.2;
        }
        .stat-card .stat-name {
            font-size: 0.9rem;
            color: var(--brand-text-soft);
            margin-top: 0.3rem;
        }
        @media (max-width: 767px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 400px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== Pain Points ========== */
        .pain-list {
            display: flex;
            flex-direction: column;
            gap: 1.1rem;
            margin-top: 2rem;
        }
        .pain-item {
            display: flex;
            align-items: flex-start;
            gap: 1.1rem;
            background: var(--brand-bg);
            border: 1px solid var(--brand-border-light);
            border-radius: var(--brand-radius-md);
            padding: 1.3rem 1.5rem;
            transition: box-shadow var(--brand-transition), border-color var(--brand-transition), transform var(--brand-transition);
        }
        .pain-item:hover {
            box-shadow: var(--brand-shadow-md);
            border-color: var(--brand-border);
            transform: translateX(4px);
        }
        .pain-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--brand-primary);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .pain-content h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--brand-primary);
            margin-bottom: 0.35rem;
        }
        .pain-content p {
            font-size: 0.95rem;
            color: var(--brand-text-soft);
            line-height: 1.7;
            margin: 0;
        }
        .pain-content .pain-solution {
            display: inline-block;
            margin-top: 0.5rem;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--brand-secondary);
            background: rgba(201,154,63,0.1);
            padding: 0.25rem 0.7rem;
            border-radius: 999px;
        }

        /* ========== Solution ========== */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin-top: 2.2rem;
        }
        .solution-card {
            background: #fff;
            border: 1px solid var(--brand-border-light);
            border-radius: var(--brand-radius-md);
            padding: 1.8rem 1.6rem;
            transition: transform var(--brand-transition), box-shadow var(--brand-transition), border-color var(--brand-transition);
            position: relative;
            overflow: hidden;
        }
        .solution-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--brand-secondary), var(--brand-secondary-light));
            opacity: 0;
            transition: opacity var(--brand-transition);
        }
        .solution-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--brand-shadow-md);
            border-color: var(--brand-border);
        }
        .solution-card:hover::before {
            opacity: 1;
        }
        .solution-card .sol-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(26,42,74,0.08);
            color: var(--brand-primary);
            font-size: 1.45rem;
            margin-bottom: 1.1rem;
        }
        .solution-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--brand-primary);
            margin-bottom: 0.6rem;
        }
        .solution-card p {
            font-size: 0.95rem;
            color: var(--brand-text-soft);
            line-height: 1.75;
            margin: 0;
        }
        @media (max-width: 1023px) {
            .solution-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .solution-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== Scenario ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin-top: 2.2rem;
        }
        .scenario-card {
            background: #fff;
            border-radius: var(--brand-radius-md);
            overflow: hidden;
            box-shadow: var(--brand-shadow-sm);
            border: 1px solid var(--brand-border-light);
            transition: transform var(--brand-transition), box-shadow var(--brand-transition);
        }
        .scenario-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--brand-shadow-md);
        }
        .scenario-card .scenario-img {
            height: 170px;
            overflow: hidden;
            position: relative;
        }
        .scenario-card .scenario-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--brand-transition);
        }
        .scenario-card:hover .scenario-img img {
            transform: scale(1.05);
        }
        .scenario-card .scenario-body {
            padding: 1.4rem 1.5rem;
        }
        .scenario-card .scenario-body h3 {
            font-size: 1.08rem;
            font-weight: 600;
            color: var(--brand-primary);
            margin-bottom: 0.5rem;
        }
        .scenario-card .scenario-body p {
            font-size: 0.92rem;
            color: var(--brand-text-soft);
            margin: 0;
            line-height: 1.7;
        }
        @media (max-width: 1023px) {
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .scenario-card .scenario-img {
                height: 190px;
            }
        }

        /* ========== Topic Cards ========== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
            margin-top: 2.2rem;
        }
        .topic-card {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            background: #fff;
            border: 1px solid var(--brand-border-light);
            border-radius: var(--brand-radius-md);
            padding: 1.5rem 1.2rem;
            transition: transform var(--brand-transition), box-shadow var(--brand-transition), border-color var(--brand-transition);
            cursor: pointer;
        }
        .topic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--brand-shadow-md);
            border-color: rgba(201,154,63,0.35);
        }
        .topic-card .topic-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(26,42,74,0.06), rgba(26,42,74,0.1));
            color: var(--brand-primary);
            font-size: 1.5rem;
            margin-bottom: 0.9rem;
        }
        .topic-card h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--brand-primary);
            margin-bottom: 0.35rem;
        }
        .topic-card p {
            font-size: 0.85rem;
            color: var(--brand-text-muted);
            margin: 0;
        }
        @media (max-width: 1023px) {
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .topic-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== Content Cards / CMS List ========== */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin-top: 2.2rem;
        }
        .content-card {
            background: #fff;
            border-radius: var(--brand-radius-md);
            overflow: hidden;
            box-shadow: var(--brand-shadow-sm);
            border: 1px solid var(--brand-border-light);
            transition: transform var(--brand-transition), box-shadow var(--brand-transition);
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--brand-shadow-md);
        }
        .content-card .content-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .content-card .content-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--brand-transition);
        }
        .content-card:hover .content-img img {
            transform: scale(1.04);
        }
        .content-card .content-tag {
            position: absolute;
            top: 0.9rem;
            left: 0.9rem;
            background: rgba(26,42,74,0.85);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.25rem 0.7rem;
            border-radius: 999px;
            backdrop-filter: blur(6px);
        }
        .content-card .content-body {
            padding: 1.3rem 1.4rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .content-card .content-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--brand-primary);
            margin-bottom: 0.5rem;
            line-height: 1.45;
        }
        .content-card .content-body p {
            font-size: 0.9rem;
            color: var(--brand-text-soft);
            line-height: 1.7;
            margin-bottom: 0.8rem;
            flex: 1;
        }
        .content-card .content-meta {
            font-size: 0.8rem;
            color: var(--brand-text-muted);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding-top: 0.8rem;
            border-top: 1px solid var(--brand-border-light);
        }
        .content-card .content-meta i {
            font-size: 0.8rem;
        }
        @media (max-width: 1023px) {
            .content-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .content-card .content-img {
                height: 200px;
            }
        }

        /* ========== Content Calendar ========== */
        .calendar-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
            margin-top: 2rem;
        }
        .calendar-item {
            background: #fff;
            border: 1px solid var(--brand-border-light);
            border-radius: var(--brand-radius-sm);
            padding: 1.1rem 1.3rem;
            display: flex;
            align-items: center;
            gap: 1rem;
            transition: box-shadow var(--brand-transition), transform var(--brand-transition);
        }
        .calendar-item:hover {
            box-shadow: var(--brand-shadow-sm);
            transform: translateY(-2px);
        }
        .calendar-date {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            background: var(--brand-primary);
            border-radius: 12px;
            color: #fff;
            flex-shrink: 0;
        }
        .calendar-date .cal-day {
            font-size: 1.35rem;
            font-weight: 700;
            line-height: 1.2;
        }
        .calendar-date .cal-month {
            font-size: 0.72rem;
            font-weight: 500;
            opacity: 0.85;
        }
        .calendar-item .cal-info h3 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--brand-primary);
            margin-bottom: 0.2rem;
        }
        .calendar-item .cal-info p {
            font-size: 0.83rem;
            color: var(--brand-text-muted);
            margin: 0;
        }
        @media (max-width: 1023px) {
            .calendar-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .calendar-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== Testimonials ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin-top: 2.2rem;
        }
        .testimonial-card {
            background: #fff;
            border: 1px solid var(--brand-border-light);
            border-radius: var(--brand-radius-md);
            padding: 1.6rem;
            transition: transform var(--brand-transition), box-shadow var(--brand-transition);
        }
        .testimonial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--brand-shadow-md);
        }
        .testimonial-card .testimonial-stars {
            color: var(--brand-secondary);
            font-size: 0.9rem;
            margin-bottom: 0.8rem;
            letter-spacing: 0.1em;
        }
        .testimonial-card p {
            font-size: 0.92rem;
            color: var(--brand-text-soft);
            line-height: 1.75;
            margin-bottom: 1rem;
            font-style: italic;
        }
        .testimonial-card .testimonial-author {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            padding-top: 0.9rem;
            border-top: 1px solid var(--brand-border-light);
        }
        .testimonial-card .testimonial-author .avatar {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--brand-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .testimonial-card .testimonial-author .author-name {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--brand-primary);
        }
        .testimonial-card .testimonial-author .author-label {
            font-size: 0.78rem;
            color: var(--brand-text-muted);
        }
        @media (max-width: 1023px) {
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== Pricing ========== */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin-top: 2.2rem;
            align-items: stretch;
        }
        .pricing-card {
            background: #fff;
            border: 1px solid var(--brand-border-light);
            border-radius: var(--brand-radius-lg);
            padding: 2rem 1.75rem;
            display: flex;
            flex-direction: column;
            transition: transform var(--brand-transition), box-shadow var(--brand-transition), border-color var(--brand-transition);
            position: relative;
        }
        .pricing-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--brand-shadow-md);
        }
        .pricing-card.featured {
            border-color: var(--brand-secondary);
            box-shadow: 0 12px 36px rgba(201,154,63,0.18);
        }
        .pricing-card .pricing-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--brand-secondary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.25rem 0.8rem;
            border-radius: 999px;
            letter-spacing: 0.06em;
            white-space: nowrap;
        }
        .pricing-card .plan-name {
            font-size: 1rem;
            font-weight: 600;
            color: var(--brand-text-soft);
            margin-bottom: 0.5rem;
            text-align: center;
        }
        .pricing-card .plan-price {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--brand-primary);
            text-align: center;
            margin-bottom: 1.25rem;
        }
        .pricing-card .plan-price .price-suffix {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--brand-text-muted);
        }
        .pricing-card .plan-features {
            list-style: none;
            padding: 0;
            margin: 0 0 1.5rem;
            flex: 1;
        }
        .pricing-card .plan-features li {
            font-size: 0.9rem;
            color: var(--brand-text-soft);
            padding: 0.45rem 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            border-bottom: 1px dashed var(--brand-border-light);
        }
        .pricing-card .plan-features li:last-child {
            border-bottom: none;
        }
        .pricing-card .plan-features li i {
            color: var(--brand-secondary);
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .pricing-card .btn {
            width: 100%;
            justify-content: center;
        }
        @media (max-width: 1023px) {
            .pricing-grid {
                grid-template-columns: 1fr;
                max-width: 480px;
                margin-left: auto;
                margin-right: auto;
            }
        }

        /* ========== Membership Benefits ========== */
        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
            margin-top: 2.2rem;
        }
        .benefit-item {
            background: var(--brand-bg);
            border-radius: var(--brand-radius-md);
            padding: 1.4rem 1.3rem;
            text-align: center;
            transition: transform var(--brand-transition), box-shadow var(--brand-transition);
            border: 1px solid var(--brand-border-light);
        }
        .benefit-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--brand-shadow-sm);
        }
        .benefit-item .benefit-icon {
            font-size: 1.7rem;
            color: var(--brand-secondary);
            margin-bottom: 0.6rem;
        }
        .benefit-item h3 {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--brand-primary);
            margin-bottom: 0.3rem;
        }
        .benefit-item p {
            font-size: 0.83rem;
            color: var(--brand-text-muted);
            margin: 0;
        }
        @media (max-width: 1023px) {
            .benefits-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .benefits-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== Guarantee Strip ========== */
        .guarantee-strip {
            background: var(--brand-primary);
            color: #fff;
            padding: 2.5rem 0;
        }
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            text-align: center;
        }
        .guarantee-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.5rem;
        }
        .guarantee-item .guar-icon {
            font-size: 1.8rem;
            color: var(--brand-secondary-light);
        }
        .guarantee-item h3 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin: 0;
        }
        .guarantee-item p {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.72);
            margin: 0;
        }
        @media (max-width: 767px) {
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 400px) {
            .guarantee-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== Coupon Wall ========== */
        .coupon-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
            margin-top: 2.2rem;
        }
        .coupon-card {
            background: #fff;
            border: 2px dashed var(--brand-border);
            border-radius: var(--brand-radius-md);
            padding: 1.4rem 1.2rem;
            text-align: center;
            transition: transform var(--brand-transition), box-shadow var(--brand-transition), border-color var(--brand-transition);
            position: relative;
        }
        .coupon-card:hover {
            transform: translateY(-4px);
            border-color: var(--brand-secondary);
            box-shadow: var(--brand-shadow-md);
        }
        .coupon-card .coupon-amount {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--brand-secondary);
            line-height: 1.2;
        }
        .coupon-card .coupon-amount .coupon-symbol {
            font-size: 1.1rem;
        }
        .coupon-card .coupon-condition {
            font-size: 0.85rem;
            color: var(--brand-text-soft);
            margin: 0.4rem 0 0.7rem;
        }
        .coupon-card .coupon-expiry {
            font-size: 0.78rem;
            color: var(--brand-text-muted);
            margin-bottom: 0.9rem;
        }
        .coupon-card .btn {
            font-size: 0.82rem;
        }
        @media (max-width: 1023px) {
            .coupon-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .coupon-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== Conversion Form ========== */
        .conversion-section {
            background: linear-gradient(135deg, #0f1d3a 0%, #1a2a4a 50%, #1e3760 100%);
            color: #fff;
            padding: 4.5rem 0;
            position: relative;
            overflow: hidden;
        }
        .conversion-section::before {
            content: "";
            position: absolute;
            top: -20%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(201,154,63,0.16) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .conversion-grid {
            display: grid;
            grid-template-columns: 1fr 0.9fr;
            gap: 3rem;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .conversion-content h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        .conversion-content p {
            font-size: 1.02rem;
            color: rgba(255,255,255,0.82);
            line-height: 1.8;
            margin-bottom: 1.5rem;
            max-width: 480px;
        }
        .conversion-content .conversion-points {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .conversion-content .conversion-points li {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.92rem;
            color: rgba(255,255,255,0.85);
            padding: 0.35rem 0;
        }
        .conversion-content .conversion-points li i {
            color: var(--brand-secondary-light);
        }
        .conversion-form-wrap {
            background: rgba(255,255,255,0.08);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255,255,255,0.16);
            border-radius: var(--brand-radius-lg);
            padding: 2rem;
            box-shadow: 0 24px 60px rgba(0,0,0,0.2);
        }
        .conversion-form-wrap .form-title {
            font-size: 1.2rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1.4rem;
            text-align: center;
        }
        .conversion-form .form-field {
            margin-bottom: 1rem;
        }
        .conversion-form label {
            display: block;
            font-size: 0.85rem;
            font-weight: 500;
            color: rgba(255,255,255,0.8);
            margin-bottom: 0.35rem;
        }
        .conversion-form input,
        .conversion-form textarea {
            width: 100%;
            padding: 0.75rem 1rem;
            border-radius: var(--brand-radius-sm);
            border: 1px solid rgba(255,255,255,0.2);
            background: rgba(255,255,255,0.06);
            color: #fff;
            font-size: 0.95rem;
            outline: none;
            transition: border-color var(--brand-transition), background var(--brand-transition);
        }
        .conversion-form input::placeholder,
        .conversion-form textarea::placeholder {
            color: rgba(255,255,255,0.45);
        }
        .conversion-form input:focus,
        .conversion-form textarea:focus {
            border-color: var(--brand-secondary);
            background: rgba(255,255,255,0.1);
        }
        .conversion-form .btn {
            width: 100%;
            justify-content: center;
            margin-top: 0.5rem;
        }
        .form-note {
            font-size: 0.78rem;
            color: rgba(255,255,255,0.55);
            text-align: center;
            margin-top: 0.9rem;
        }
        @media (max-width: 1023px) {
            .conversion-grid {
                grid-template-columns: 1fr;
                gap: 2.2rem;
            }
            .conversion-content h2 {
                font-size: 1.65rem;
            }
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #0d1730;
            color: rgba(255,255,255,0.72);
            padding: 3.5rem 0 1.5rem;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
            gap: 0.55rem;
        }
        .footer-brand .logo-icon-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 9px;
            background: var(--brand-secondary);
            color: #fff;
            font-size: 0.9rem;
        }
        .footer-desc {
            font-size: 0.87rem;
            line-height: 1.75;
            color: rgba(255,255,255,0.6);
            margin-bottom: 1.2rem;
        }
        .footer-social {
            display: flex;
            gap: 0.7rem;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.7);
            font-size: 1rem;
            transition: background var(--brand-transition), color var(--brand-transition), transform var(--brand-transition);
        }
        .footer-social a:hover,
        .footer-social a:focus {
            background: var(--brand-secondary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1rem;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 0.87rem;
            transition: color var(--brand-transition);
        }
        .footer-col ul li a:hover,
        .footer-col ul li a:focus {
            color: var(--brand-secondary-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.5);
        }
        @media (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .site-footer {
                padding: 2.5rem 0 1.25rem;
            }
        }

        /* ========== Utility ========== */
        .text-center {
            text-align: center;
        }
        .text-right {
            text-align: right;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .section-header-center {
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        .section-header-center .section-desc {
            text-align: center;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            white-space: nowrap;
            border: 0;
        }

        .btn i {
            font-size: 0.9em;
        }

/* roulang page: category1 */
:root {
            --brand-primary: #1a2a4a;
            --brand-primary-light: #243b65;
            --brand-secondary: #c99a3f;
            --brand-secondary-light: #e8bd6b;
            --brand-bg: #f7f8fc;
            --brand-surface: #ffffff;
            --brand-text: #2d3047;
            --brand-text-soft: #5f6580;
            --brand-text-muted: #8a90a6;
            --brand-border: #e3e6ee;
            --brand-border-light: #edf0f5;
            --brand-shadow-sm: 0 2px 8px rgba(26,42,74,0.06);
            --brand-shadow-md: 0 8px 28px rgba(26,42,74,0.1);
            --brand-shadow-lg: 0 18px 48px rgba(26,42,74,0.14);
            --brand-radius-sm: 8px;
            --brand-radius-md: 14px;
            --brand-radius-lg: 22px;
            --brand-radius-xl: 32px;
            --brand-font: "Inter","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
            --brand-transition: 0.22s cubic-bezier(0.25,0.46,0.45,0.94);
            --brand-container: 1200px;
        }

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

        body {
            font-family: var(--brand-font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--brand-text);
            background-color: var(--brand-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--brand-primary);
            text-decoration: none;
            transition: color var(--brand-transition);
        }

        a:hover,
        a:focus {
            color: var(--brand-secondary);
            outline: none;
        }

        a:focus-visible {
            outline: 2px solid var(--brand-secondary);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 1rem;
        }

        .brand-container {
            max-width: var(--brand-container);
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 768px) {
            .brand-container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        @media (min-width: 1024px) {
            .brand-container {
                padding-left: 2.5rem;
                padding-right: 2.5rem;
            }
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--brand-border-light);
            box-shadow: 0 1px 12px rgba(26,42,74,0.04);
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 0.9rem 0;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--brand-primary);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }

        .brand-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg,var(--brand-primary),var(--brand-primary-light));
            color: var(--brand-secondary-light);
            font-size: 1.15rem;
            flex-shrink: 0;
        }

        .header-search {
            flex: 1;
            max-width: 380px;
            display: flex;
            align-items: center;
            background: var(--brand-bg);
            border: 1px solid var(--brand-border);
            border-radius: 999px;
            padding: 0.35rem 0.35rem 0.35rem 1rem;
            transition: border-color var(--brand-transition), box-shadow var(--brand-transition);
        }

        .header-search:focus-within {
            border-color: var(--brand-secondary);
            box-shadow: 0 0 0 3px rgba(201,154,63,0.14);
        }

        .header-search input {
            flex: 1;
            border: none;
            background: transparent;
            outline: none;
            color: var(--brand-text);
            font-size: 0.95rem;
            min-width: 0;
        }

        .header-search input::placeholder {
            color: var(--brand-text-muted);
        }

        .header-search button {
            background: var(--brand-primary);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 0.5rem 1.2rem;
            font-size: 0.9rem;
            cursor: pointer;
            font-weight: 600;
            transition: background var(--brand-transition), transform var(--brand-transition);
            white-space: nowrap;
        }

        .header-search button:hover {
            background: var(--brand-primary-light);
            transform: translateY(-1px);
        }

        .header-cta {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--brand-secondary);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 0.55rem 1.25rem;
            border-radius: 999px;
            transition: background var(--brand-transition), transform var(--brand-transition), box-shadow var(--brand-transition);
            box-shadow: 0 4px 14px rgba(201,154,63,0.3);
        }

        .header-cta:hover,
        .header-cta:focus {
            background: #b88933;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 22px rgba(201,154,63,0.38);
        }

        .header-mobile-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--brand-bg);
            border: 1px solid var(--brand-border);
            color: var(--brand-primary);
            font-size: 1.1rem;
            cursor: pointer;
            transition: background var(--brand-transition);
        }

        .header-mobile-toggle:hover {
            background: var(--brand-border-light);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 0.45rem;
            padding: 0.6rem 0 0.85rem;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--brand-border) transparent;
        }

        .header-nav::-webkit-scrollbar {
            height: 4px;
        }

        .header-nav::-webkit-scrollbar-thumb {
            background: var(--brand-border);
            border-radius: 999px;
        }

        .nav-tab {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1.1rem;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--brand-text-soft);
            background: transparent;
            border: 1px solid transparent;
            transition: all var(--brand-transition);
            white-space: nowrap;
        }

        .nav-tab i {
            font-size: 0.85rem;
            color: var(--brand-text-muted);
            transition: color var(--brand-transition);
        }

        .nav-tab:hover {
            color: var(--brand-primary);
            background: var(--brand-bg);
            border-color: var(--brand-border-light);
        }

        .nav-tab:hover i {
            color: var(--brand-secondary);
        }

        .nav-tab.active {
            color: #fff;
            background: var(--brand-primary);
            border-color: var(--brand-primary);
            box-shadow: 0 4px 14px rgba(26,42,74,0.22);
        }

        .nav-tab.active i {
            color: var(--brand-secondary-light);
        }

        @media (max-width: 767px) {
            .header-search {
                display: none;
            }

            .header-cta {
                display: none;
            }

            .header-mobile-toggle {
                display: inline-flex;
            }

            .header-nav {
                gap: 0.3rem;
                padding-bottom: 0.7rem;
            }

            .nav-tab {
                padding: 0.45rem 0.9rem;
                font-size: 0.82rem;
            }
        }

        @media (min-width: 768px) {
            .header-mobile-toggle {
                display: none;
            }
        }

        /* ========== Hero ========== */
        .category-hero {
            position: relative;
            background: linear-gradient(135deg, #f0f3fa 0%, #f8f9fd 45%, #f3f0ea 100%);
            border-bottom: 1px solid var(--brand-border-light);
            overflow: hidden;
            padding: 3rem 0 3.5rem;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -100px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(201,154,63,0.12) 0%, rgba(201,154,63,0) 70%);
            pointer-events: none;
        }

        .category-hero-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            position: relative;
            z-index: 1;
        }

        @media (min-width: 900px) {
            .category-hero-grid {
                grid-template-columns: 1.15fr 0.85fr;
                align-items: center;
                gap: 3rem;
            }
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(201,154,63,0.12);
            color: #9a762d;
            font-weight: 600;
            font-size: 0.82rem;
            padding: 0.4rem 1rem;
            border-radius: 999px;
            margin-bottom: 1.2rem;
            letter-spacing: 0.02em;
        }

        .hero-badge i {
            font-size: 0.75rem;
        }

        .category-hero h1 {
            font-size: 2.1rem;
            line-height: 1.25;
            font-weight: 800;
            color: var(--brand-primary);
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }

        .category-hero .hero-sub {
            font-size: 1.05rem;
            color: var(--brand-text-soft);
            max-width: 560px;
            margin-bottom: 1.75rem;
            line-height: 1.8;
        }

        .hero-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            margin-bottom: 1.75rem;
        }

        .hero-metric {
            background: var(--brand-surface);
            border: 1px solid var(--brand-border-light);
            border-radius: var(--brand-radius-sm);
            padding: 0.7rem 1.2rem;
            box-shadow: var(--brand-shadow-sm);
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--brand-primary);
            transition: box-shadow var(--brand-transition), transform var(--brand-transition);
        }

        .hero-metric:hover {
            box-shadow: var(--brand-shadow-md);
            transform: translateY(-2px);
        }

        .hero-metric i {
            color: var(--brand-secondary);
            font-size: 0.95rem;
        }

        .hero-metric span {
            color: var(--brand-text-muted);
            font-weight: 500;
            font-size: 0.78rem;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.9rem;
        }

        .btn-primary-hero {
            display: inline-flex;
            align-items: center;
            gap: 0.55rem;
            background: var(--brand-secondary);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            padding: 0.85rem 1.9rem;
            border-radius: 999px;
            border: none;
            cursor: pointer;
            box-shadow: 0 6px 20px rgba(201,154,63,0.32);
            transition: background var(--brand-transition), transform var(--brand-transition), box-shadow var(--brand-transition);
        }

        .btn-primary-hero:hover {
            background: #b88933;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(201,154,63,0.4);
            color: #fff;
        }

        .btn-secondary-hero {
            display: inline-flex;
            align-items: center;
            gap: 0.55rem;
            background: var(--brand-surface);
            color: var(--brand-primary);
            font-weight: 600;
            font-size: 1rem;
            padding: 0.85rem 1.7rem;
            border-radius: 999px;
            border: 1px solid var(--brand-border);
            transition: all var(--brand-transition);
        }

        .btn-secondary-hero:hover {
            border-color: var(--brand-primary);
            background: var(--brand-bg);
            color: var(--brand-primary);
        }

        .hero-visual {
            position: relative;
            border-radius: var(--brand-radius-lg);
            overflow: hidden;
            box-shadow: var(--brand-shadow-lg);
            background: var(--brand-surface);
            min-height: 300px;
        }

        .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 300px;
            max-height: 400px;
        }

        .hero-visual-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 2rem 1.5rem 1.5rem;
            background: linear-gradient(to top, rgba(26,42,74,0.92) 0%, rgba(26,42,74,0.35) 55%, transparent 100%);
            color: #fff;
        }

        .hero-visual-overlay .overlay-title {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 0.25rem;
            color: #fff;
        }

        .hero-visual-overlay .overlay-sub {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.82);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .hero-visual-overlay .overlay-sub i {
            color: var(--brand-secondary-light);
        }

        /* ========== Section Common ========== */
        .page-section {
            padding: 3.5rem 0;
        }

        .page-section.alt-bg {
            background: var(--brand-surface);
            border-top: 1px solid var(--brand-border-light);
            border-bottom: 1px solid var(--brand-border-light);
        }

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

        .section-head h2 {
            font-size: 1.7rem;
            font-weight: 800;
            color: var(--brand-primary);
            margin-bottom: 0.6rem;
            letter-spacing: -0.01em;
        }

        .section-head p {
            font-size: 1rem;
            color: var(--brand-text-soft);
            max-width: 680px;
            line-height: 1.75;
            margin-bottom: 0;
        }

        .section-head .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--brand-secondary);
            margin-bottom: 0.55rem;
        }

        /* ========== Cards ========== */
        .card-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }

        @media (min-width: 600px) {
            .card-grid.two-col {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (min-width: 900px) {
            .card-grid.three-col {
                grid-template-columns: repeat(3, 1fr);
            }
            .card-grid.four-col {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .info-card {
            background: var(--brand-surface);
            border: 1px solid var(--brand-border-light);
            border-radius: var(--brand-radius-md);
            padding: 1.6rem 1.5rem;
            box-shadow: var(--brand-shadow-sm);
            transition: box-shadow var(--brand-transition), transform var(--brand-transition), border-color var(--brand-transition);
            position: relative;
            overflow: hidden;
        }

        .info-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--brand-secondary), var(--brand-secondary-light));
            opacity: 0;
            transition: opacity var(--brand-transition);
        }

        .info-card:hover {
            box-shadow: var(--brand-shadow-md);
            transform: translateY(-3px);
            border-color: var(--brand-border);
        }

        .info-card:hover::before {
            opacity: 1;
        }

        .info-card .card-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(201,154,63,0.12);
            color: var(--brand-secondary);
            font-size: 1.25rem;
            margin-bottom: 1rem;
        }

        .info-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--brand-primary);
            margin-bottom: 0.5rem;
        }

        .info-card p {
            font-size: 0.94rem;
            color: var(--brand-text-soft);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .info-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            margin-top: 1rem;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--brand-secondary);
            transition: color var(--brand-transition);
        }

        .info-card .card-link:hover {
            color: #9a762d;
        }

        .info-card .card-link i {
            font-size: 0.75rem;
            transition: transform var(--brand-transition);
        }

        .info-card .card-link:hover i {
            transform: translateX(3px);
        }

        /* ========== Stats / Data ========== */
        .stats-bar {
            background: var(--brand-primary);
            border-radius: var(--brand-radius-lg);
            padding: 2.2rem 2rem;
            color: #fff;
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
            box-shadow: var(--brand-shadow-md);
        }

        @media (min-width: 700px) {
            .stats-bar {
                grid-template-columns: repeat(4, 1fr);
                gap: 1rem;
            }
        }

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

        .stat-item .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--brand-secondary-light);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }

        .stat-item .stat-label {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.75);
            margin-top: 0.3rem;
        }

        /* ========== Feature Image Card ========== */
        .feature-card {
            background: var(--brand-surface);
            border-radius: var(--brand-radius-md);
            overflow: hidden;
            border: 1px solid var(--brand-border-light);
            box-shadow: var(--brand-shadow-sm);
            transition: box-shadow var(--brand-transition), transform var(--brand-transition);
            cursor: default;
        }

        .feature-card:hover {
            box-shadow: var(--brand-shadow-md);
            transform: translateY(-3px);
        }

        .feature-card .feature-card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .feature-card .feature-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .feature-card:hover .feature-card-img img {
            transform: scale(1.05);
        }

        .feature-card .feature-card-body {
            padding: 1.3rem 1.4rem 1.5rem;
        }

        .feature-card .feature-card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--brand-primary);
            margin-bottom: 0.45rem;
        }

        .feature-card .feature-card-body p {
            font-size: 0.88rem;
            color: var(--brand-text-soft);
            line-height: 1.65;
            margin-bottom: 0;
        }

        .feature-card .feature-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            background: var(--brand-bg);
            border: 1px solid var(--brand-border-light);
            border-radius: 999px;
            padding: 0.25rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--brand-text-soft);
            margin-bottom: 0.7rem;
        }

        .feature-card .feature-tag i {
            color: var(--brand-secondary);
            font-size: 0.7rem;
        }

        /* ========== Steps ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.2rem;
        }

        @media (min-width: 700px) {
            .steps-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .step-card {
            background: var(--brand-surface);
            border: 1px solid var(--brand-border-light);
            border-radius: var(--brand-radius-md);
            padding: 1.5rem;
            box-shadow: var(--brand-shadow-sm);
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            transition: box-shadow var(--brand-transition), transform var(--brand-transition);
        }

        .step-card:hover {
            box-shadow: var(--brand-shadow-md);
            transform: translateY(-2px);
        }

        .step-num {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--brand-primary);
            color: var(--brand-secondary-light);
            font-weight: 800;
            font-size: 1.05rem;
        }

        .step-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--brand-primary);
            margin-bottom: 0.3rem;
        }

        .step-card p {
            font-size: 0.88rem;
            color: var(--brand-text-soft);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* ========== News List ========== */
        .news-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1rem;
        }

        .news-item {
            background: var(--brand-surface);
            border: 1px solid var(--brand-border-light);
            border-radius: var(--brand-radius-sm);
            padding: 1.3rem 1.5rem;
            box-shadow: var(--brand-shadow-sm);
            transition: box-shadow var(--brand-transition), transform var(--brand-transition);
        }

        .news-item:hover {
            box-shadow: var(--brand-shadow-md);
            transform: translateY(-2px);
        }

        .news-item .news-meta {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            font-size: 0.78rem;
            color: var(--brand-text-muted);
            margin-bottom: 0.4rem;
        }

        .news-item .news-meta i {
            color: var(--brand-secondary);
            font-size: 0.7rem;
            margin-right: 0.25rem;
        }

        .news-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--brand-primary);
            margin-bottom: 0.4rem;
        }

        .news-item h3 a {
            color: var(--brand-primary);
        }

        .news-item h3 a:hover {
            color: var(--brand-secondary);
        }

        .news-item p {
            font-size: 0.9rem;
            color: var(--brand-text-soft);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }

        .faq-item {
            background: var(--brand-surface);
            border: 1px solid var(--brand-border-light);
            border-radius: var(--brand-radius-md);
            overflow: hidden;
            box-shadow: var(--brand-shadow-sm);
            transition: box-shadow var(--brand-transition);
        }

        .faq-item:hover {
            box-shadow: var(--brand-shadow-md);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            background: transparent;
            border: none;
            padding: 1.2rem 1.5rem;
            font-size: 1rem;
            font-weight: 700;
            color: var(--brand-primary);
            cursor: pointer;
            text-align: left;
            transition: background var(--brand-transition);
        }

        .faq-question:hover {
            background: var(--brand-bg);
        }

        .faq-question i {
            flex-shrink: 0;
            color: var(--brand-secondary);
            font-size: 0.85rem;
            transition: transform var(--brand-transition);
        }

        .faq-answer {
            padding: 0 1.5rem 1.3rem;
            font-size: 0.94rem;
            color: var(--brand-text-soft);
            line-height: 1.75;
            display: none;
        }

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

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-primary-light) 100%);
            border-radius: var(--brand-radius-xl);
            padding: 2.8rem 2rem;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(201,154,63,0.15);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            right: -60px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(201,154,63,0.08);
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 1.75rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.8rem;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            font-size: 1rem;
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            margin: 0 auto 1.8rem;
            line-height: 1.75;
            position: relative;
            z-index: 1;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.9rem;
            justify-content: center;
            position: relative;
            z-index: 1;
        }

        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.55rem;
            background: var(--brand-secondary);
            color: #fff;
            font-weight: 700;
            font-size: 0.98rem;
            padding: 0.8rem 2rem;
            border-radius: 999px;
            border: none;
            cursor: pointer;
            box-shadow: 0 6px 20px rgba(0,0,0,0.2);
            transition: background var(--brand-transition), transform var(--brand-transition);
        }

        .btn-cta-primary:hover {
            background: #b88933;
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-cta-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.55rem;
            background: rgba(255,255,255,0.1);
            color: #fff;
            font-weight: 600;
            font-size: 0.98rem;
            padding: 0.8rem 1.8rem;
            border-radius: 999px;
            border: 1px solid rgba(255,255,255,0.3);
            transition: background var(--brand-transition), border-color var(--brand-transition);
        }

        .btn-cta-secondary:hover {
            background: rgba(255,255,255,0.18);
            border-color: rgba(255,255,255,0.5);
            color: #fff;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--brand-primary);
            color: rgba(255,255,255,0.75);
            padding: 3rem 0 1.5rem;
            margin-top: 3.5rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }

        @media (min-width: 700px) {
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr 1fr;
            }
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
        }

        .logo-icon-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(201,154,63,0.2);
            color: var(--brand-secondary-light);
            font-size: 1rem;
            flex-shrink: 0;
        }

        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
            max-width: 320px;
        }

        .footer-social {
            display: flex;
            gap: 0.65rem;
            margin-top: 1rem;
        }

        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.7);
            font-size: 0.95rem;
            transition: background var(--brand-transition), color var(--brand-transition);
        }

        .footer-social a:hover {
            background: var(--brand-secondary);
            color: #fff;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
        }

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

        .footer-col ul li {
            margin-bottom: 0.55rem;
        }

        .footer-col ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            transition: color var(--brand-transition);
        }

        .footer-col ul li a:hover {
            color: var(--brand-secondary-light);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: 1.3rem;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.8rem;
            color: rgba(255,255,255,0.5);
            margin-bottom: 0;
        }

        /* ========== Responsive Fine-tune ========== */
        @media (max-width: 767px) {
            .category-hero {
                padding: 2.5rem 0 2.8rem;
            }

            .category-hero h1 {
                font-size: 1.6rem;
            }

            .category-hero .hero-sub {
                font-size: 0.95rem;
            }

            .page-section {
                padding: 2.5rem 0;
            }

            .section-head h2 {
                font-size: 1.4rem;
            }

            .stats-bar {
                padding: 1.5rem 1.2rem;
            }

            .stat-item .stat-num {
                font-size: 1.5rem;
            }

            .cta-section {
                padding: 2rem 1.2rem;
                border-radius: var(--brand-radius-lg);
            }

            .cta-section h2 {
                font-size: 1.4rem;
            }
        }

        @media (min-width: 768px) and (max-width: 1023px) {
            .category-hero h1 {
                font-size: 1.8rem;
            }
        }

/* roulang page: article */
:root {
            --brand-primary: #1a2a4a;
            --brand-primary-light: #243b65;
            --brand-secondary: #c99a3f;
            --brand-secondary-light: #e8bd6b;
            --brand-bg: #f7f8fc;
            --brand-surface: #ffffff;
            --brand-text: #2d3047;
            --brand-text-soft: #5f6580;
            --brand-text-muted: #8a90a6;
            --brand-border: #e3e6ee;
            --brand-border-light: #edf0f5;
            --brand-shadow-sm: 0 2px 8px rgba(26,42,74,0.06);
            --brand-shadow-md: 0 8px 28px rgba(26,42,74,0.1);
            --brand-shadow-lg: 0 18px 48px rgba(26,42,74,0.14);
            --brand-radius-sm: 8px;
            --brand-radius-md: 14px;
            --brand-radius-lg: 22px;
            --brand-radius-xl: 32px;
            --brand-font: "Inter","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
            --brand-transition: 0.22s cubic-bezier(0.25,0.46,0.45,0.94);
            --brand-container: 1200px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--brand-font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--brand-text);
            background-color: var(--brand-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--brand-primary);
            text-decoration: none;
            transition: color var(--brand-transition);
        }
        a:hover,
        a:focus {
            color: var(--brand-secondary);
            outline: none;
        }
        a:focus-visible {
            outline: 2px solid var(--brand-secondary);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 1rem;
        }
        .brand-container {
            max-width: var(--brand-container);
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        @media (min-width: 768px) {
            .brand-container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        @media (min-width: 1024px) {
            .brand-container {
                padding-left: 2.5rem;
                padding-right: 2.5rem;
            }
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--brand-border-light);
            box-shadow: 0 1px 12px rgba(26,42,74,0.04);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 0.9rem 0;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--brand-primary);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .brand-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg,var(--brand-primary),var(--brand-primary-light));
            color: var(--brand-secondary-light);
            font-size: 1.15rem;
            flex-shrink: 0;
        }
        .header-search {
            flex: 1;
            max-width: 380px;
            display: flex;
            align-items: center;
            background: var(--brand-bg);
            border: 1px solid var(--brand-border);
            border-radius: 999px;
            padding: 0.35rem 0.35rem 0.35rem 1rem;
            transition: border-color var(--brand-transition), box-shadow var(--brand-transition);
        }
        .header-search:focus-within {
            border-color: var(--brand-secondary);
            box-shadow: 0 0 0 3px rgba(201,154,63,0.14);
        }
        .header-search i {
            color: var(--brand-text-muted);
            font-size: 0.9rem;
            margin-right: 0.5rem;
        }
        .header-search input {
            flex: 1;
            border: none;
            background: transparent;
            outline: none;
            color: var(--brand-text);
            font-size: 0.95rem;
            min-width: 0;
        }
        .header-search input::placeholder {
            color: var(--brand-text-muted);
        }
        .header-search button {
            background: var(--brand-primary);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 0.5rem 1.2rem;
            font-size: 0.9rem;
            cursor: pointer;
            font-weight: 600;
            transition: background var(--brand-transition), transform var(--brand-transition);
            white-space: nowrap;
        }
        .header-search button:hover {
            background: var(--brand-primary-light);
            transform: translateY(-1px);
        }
        .header-cta {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--brand-secondary);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 0.55rem 1.25rem;
            border-radius: 999px;
            transition: background var(--brand-transition), transform var(--brand-transition), box-shadow var(--brand-transition);
            box-shadow: 0 4px 14px rgba(201,154,63,0.3);
        }
        .header-cta:hover,
        .header-cta:focus {
            background: #b88933;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 22px rgba(201,154,63,0.38);
        }
        .header-mobile-toggle {
            display: none;
            background: none;
            border: 1px solid var(--brand-border);
            border-radius: 8px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            color: var(--brand-primary);
            font-size: 1.1rem;
            cursor: pointer;
            transition: background var(--brand-transition), color var(--brand-transition);
        }
        .header-mobile-toggle:hover {
            background: var(--brand-bg);
            color: var(--brand-secondary);
        }
        .header-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            padding: 0.55rem 0 0.85rem;
            align-items: center;
            border-top: 1px solid var(--brand-border-light);
        }
        .nav-tab {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            padding: 0.5rem 1rem;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--brand-text-soft);
            background: transparent;
            transition: background var(--brand-transition), color var(--brand-transition);
            white-space: nowrap;
        }
        .nav-tab i {
            font-size: 0.85rem;
        }
        .nav-tab:hover {
            background: var(--brand-bg);
            color: var(--brand-primary);
        }
        .nav-tab.active {
            background: var(--brand-primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(26,42,74,0.2);
        }
        .nav-tab.active:hover {
            background: var(--brand-primary-light);
            color: #fff;
        }

        /* ========== Article Main ========== */
        .article-detail-main {
            background: var(--brand-surface);
            margin-top: 1.5rem;
            border-radius: var(--brand-radius-lg);
            box-shadow: var(--brand-shadow-sm);
            padding: 2rem 0 3rem;
        }
        .article-breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.88rem;
            color: var(--brand-text-muted);
            margin-bottom: 1.25rem;
        }
        .article-breadcrumb a {
            color: var(--brand-primary);
        }
        .article-breadcrumb a:hover {
            color: var(--brand-secondary);
        }
        .article-breadcrumb .separator {
            color: var(--brand-border);
        }
        .article-hero {
            margin-bottom: 2.25rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid var(--brand-border-light);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 0.75rem;
        }
        .article-category {
            display: inline-block;
            background: var(--brand-primary);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 700;
            padding: 0.2rem 0.8rem;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }
        .article-date {
            font-size: 0.88rem;
            color: var(--brand-text-muted);
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }
        .article-title {
            font-size: 2rem;
            line-height: 1.3;
            font-weight: 800;
            color: var(--brand-primary);
            margin: 0.5rem 0 1rem;
        }
        .article-summary {
            font-size: 1.1rem;
            color: var(--brand-text-soft);
            line-height: 1.7;
            margin: 0;
        }
        .article-body {
            font-size: 1rem;
            line-height: 1.85;
            color: var(--brand-text);
            max-width: 820px;
            margin: 0 auto 2.5rem;
        }
        .article-body h1,
        .article-body h2,
        .article-body h3,
        .article-body h4 {
            color: var(--brand-primary);
            font-weight: 700;
            margin-top: 2rem;
            margin-bottom: 1rem;
            line-height: 1.4;
        }
        .article-body h1 { font-size: 1.9rem; }
        .article-body h2 { font-size: 1.6rem; }
        .article-body h3 { font-size: 1.35rem; }
        .article-body h4 { font-size: 1.15rem; }
        .article-body p {
            margin-bottom: 1.25rem;
        }
        .article-body ul,
        .article-body ol {
            padding-left: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .article-body li {
            margin-bottom: 0.4rem;
        }
        .article-body img {
            border-radius: var(--brand-radius-md);
            margin: 1.5rem 0;
            box-shadow: var(--brand-shadow-sm);
        }
        .article-body blockquote {
            border-left: 4px solid var(--brand-secondary);
            background: var(--brand-bg);
            padding: 1rem 1.25rem;
            border-radius: 0 var(--brand-radius-sm) var(--brand-radius-sm) 0;
            color: var(--brand-text-soft);
            margin: 1.5rem 0;
        }
        .article-body a {
            color: var(--brand-primary);
            font-weight: 600;
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body a:hover {
            color: var(--brand-secondary);
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.95rem;
        }
        .article-body th,
        .article-body td {
            border: 1px solid var(--brand-border);
            padding: 0.65rem 0.9rem;
            text-align: left;
        }
        .article-body th {
            background: var(--brand-bg);
            font-weight: 700;
            color: var(--brand-primary);
        }
        .article-not-found {
            text-align: center;
            padding: 3rem 1rem;
            background: var(--brand-bg);
            border-radius: var(--brand-radius-md);
        }
        .article-not-found i {
            font-size: 3rem;
            color: var(--brand-text-muted);
            display: block;
            margin-bottom: 1rem;
        }
        .article-not-found h2 {
            font-size: 1.5rem;
            color: var(--brand-primary);
            margin-bottom: 0.5rem;
        }
        .article-not-found p {
            color: var(--brand-text-soft);
            margin-bottom: 1.5rem;
        }

        .article-tags {
            max-width: 820px;
            margin: 0 auto 2.5rem;
            padding: 1.25rem 1.5rem;
            background: var(--brand-bg);
            border-radius: var(--brand-radius-md);
            border: 1px solid var(--brand-border-light);
        }
        .article-tags h2 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--brand-primary);
            margin-bottom: 0.75rem;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .tag {
            display: inline-block;
            background: #fff;
            border: 1px solid var(--brand-border);
            color: var(--brand-text-soft);
            font-size: 0.82rem;
            padding: 0.25rem 0.75rem;
            border-radius: 999px;
            transition: border-color var(--brand-transition), color var(--brand-transition), background var(--brand-transition);
        }
        .tag:hover {
            border-color: var(--brand-secondary);
            color: var(--brand-secondary);
            background: #fffdf7;
        }

        .article-related-resources,
        .article-guarantee,
        .article-safety-tips,
        .article-cta {
            max-width: 1000px;
            margin: 0 auto 2.5rem;
            padding: 1.75rem;
            border-radius: var(--brand-radius-md);
        }
        .article-related-resources {
            background: var(--brand-surface);
            border: 1px solid var(--brand-border);
            box-shadow: var(--brand-shadow-sm);
        }
        .article-related-resources h2,
        .article-guarantee h2,
        .article-safety-tips h2,
        .article-cta h2 {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--brand-primary);
            margin-bottom: 1.25rem;
        }
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1rem;
        }
        .resource-card {
            background: var(--brand-bg);
            border-radius: var(--brand-radius-md);
            padding: 1.25rem;
            border: 1px solid var(--brand-border-light);
            transition: transform var(--brand-transition), box-shadow var(--brand-transition);
        }
        .resource-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--brand-shadow-md);
        }
        .resource-card .resource-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg,var(--brand-primary),var(--brand-primary-light));
            color: var(--brand-secondary-light);
            font-size: 1rem;
            margin-bottom: 0.85rem;
        }
        .resource-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--brand-primary);
            margin-bottom: 0.4rem;
        }
        .resource-card p {
            font-size: 0.9rem;
            color: var(--brand-text-soft);
            margin: 0;
            line-height: 1.6;
        }
        .article-guarantee {
            background: #f0f3fa;
            border: 1px solid #dde3f0;
        }
        .article-guarantee .guarantee-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem 2rem;
        }
        .article-guarantee .guarantee-list li {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.95rem;
            color: var(--brand-text-soft);
        }
        .article-guarantee .guarantee-list i {
            color: var(--brand-secondary);
            font-size: 1rem;
        }
        .article-safety-tips {
            background: #fdf8ee;
            border: 1px solid #f1dfb8;
        }
        .article-safety-tips p {
            color: var(--brand-text-soft);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 0.75rem;
        }
        .article-safety-tips p:last-child {
            margin-bottom: 0;
        }
        .article-cta {
            background: linear-gradient(135deg,var(--brand-primary),var(--brand-primary-light));
            color: #fff;
            text-align: left;
            box-shadow: var(--brand-shadow-md);
        }
        .article-cta h2 {
            color: #fff;
        }
        .article-cta p {
            color: rgba(255,255,255,0.85);
            margin-bottom: 1.5rem;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border-radius: 999px;
            padding: 0.65rem 1.5rem;
            font-weight: 700;
            font-size: 0.95rem;
            transition: background var(--brand-transition), transform var(--brand-transition), box-shadow var(--brand-transition);
            cursor: pointer;
            border: none;
        }
        .btn-primary {
            background: var(--brand-secondary);
            color: #fff;
            box-shadow: 0 6px 16px rgba(201,154,63,0.35);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: #b88933;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 10px 22px rgba(201,154,63,0.45);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.65);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: rgba(255,255,255,0.1);
            color: #fff;
            border-color: #fff;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--brand-primary);
            color: rgba(255,255,255,0.85);
            margin-top: 2.5rem;
            padding: 3rem 0 1.5rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.9rem;
        }
        .logo-icon-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(255,255,255,0.12);
            color: var(--brand-secondary-light);
            font-size: 1rem;
            flex-shrink: 0;
        }
        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.7);
            margin-bottom: 1.25rem;
        }
        .footer-social {
            display: flex;
            gap: 0.75rem;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.8);
            font-size: 1rem;
            transition: background var(--brand-transition), color var(--brand-transition), transform var(--brand-transition);
        }
        .footer-social a:hover {
            background: var(--brand-secondary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul a {
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
            transition: color var(--brand-transition), padding-left var(--brand-transition);
        }
        .footer-col ul a:hover {
            color: var(--brand-secondary-light);
            padding-left: 3px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: 1.25rem;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.55);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .header-search {
                max-width: 280px;
            }
            .resource-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-title {
                font-size: 1.75rem;
            }
        }
        @media (max-width: 768px) {
            .site-header .header-search {
                display: none;
            }
            .header-mobile-toggle {
                display: inline-flex;
            }
            .header-nav {
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 0.25rem;
                padding: 0.75rem 0 1rem;
            }
            .header-nav.nav-open {
                display: flex;
            }
            .nav-tab {
                justify-content: flex-start;
                padding: 0.7rem 1rem;
                border-radius: var(--brand-radius-sm);
            }
            .brand-logo {
                font-size: 1rem;
            }
            .brand-logo .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
            .header-cta {
                padding: 0.5rem 1rem;
                font-size: 0.82rem;
            }
            .article-detail-main {
                padding: 1.5rem 0 2rem;
            }
            .article-title {
                font-size: 1.5rem;
            }
            .article-summary {
                font-size: 1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .resource-grid {
                grid-template-columns: 1fr;
            }
            .article-related-resources,
            .article-guarantee,
            .article-safety-tips,
            .article-cta {
                padding: 1.25rem;
            }
            .article-cta {
                text-align: center;
            }
            .article-cta .btn + .btn {
                margin-left: 0.5rem;
            }
        }
        @media (max-width: 520px) {
            .brand-container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .header-top {
                gap: 0.5rem;
            }
            .header-cta {
                padding: 0.45rem 0.8rem;
                font-size: 0.78rem;
                gap: 0.3rem;
            }
            .article-meta {
                gap: 0.5rem;
            }
            .article-title {
                font-size: 1.35rem;
            }
            .article-body {
                font-size: 0.95rem;
            }
            .article-body h1 { font-size: 1.6rem; }
            .article-body h2 { font-size: 1.4rem; }
            .article-body h3 { font-size: 1.2rem; }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                font-size: 0.8rem;
            }
            .article-cta .btn {
                width: 100%;
                justify-content: center;
            }
            .article-cta .btn + .btn {
                margin-left: 0;
                margin-top: 0.75rem;
            }
        }