/* roulang page: index */
:root {
            --color-primary: #2E6FB7;
            --color-primary-hover: #245A93;
            --color-primary-light: #EAF2FA;
            --color-accent: #E8923C;
            --color-accent-hover: #D07F2B;
            --color-accent-light: #FDF2E6;
            --color-bg: #F6F9FC;
            --color-surface: #FFFFFF;
            --color-text: #1D2B3A;
            --color-muted: #5B6B7B;
            --color-light-text: #7B8A99;
            --color-border: #DFE7EF;
            --color-footer: #16283B;
            --radius: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 2px rgba(29,43,58,0.06);
            --shadow-md: 0 1px 2px rgba(29,43,58,0.06), 0 8px 24px rgba(29,43,58,0.06);
            --shadow-lg: 0 4px 12px rgba(29,43,58,0.08), 0 16px 32px rgba(29,43,58,0.08);
            --transition: all 0.25s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
            object-fit: cover;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        @media (min-width: 640px) {
            .container {
                padding: 0 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding: 0 2rem;
            }
        }
        .section {
            padding: 4rem 0;
        }
        .section-alt {
            background-color: #FFFFFF;
        }
        @media (min-width: 768px) {
            .section {
                padding: 5rem 0;
            }
        }
        @media (min-width: 1024px) {
            .section {
                padding: 6rem 0;
            }
        }
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 0.75rem;
            color: var(--color-text);
        }
        .section-subtitle {
            color: var(--color-muted);
            font-size: 1rem;
            max-width: 720px;
            margin-bottom: 2.5rem;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            min-height: 44px;
            padding: 0.75rem 1.75rem;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            border: 2px solid transparent;
            transition: var(--transition);
            line-height: 1.4;
        }
        .btn-primary {
            background-color: var(--color-primary);
            color: #fff;
        }
        .btn-primary:hover {
            background-color: var(--color-primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(46, 111, 183, 0.25);
        }
        .btn-accent {
            background-color: var(--color-accent);
            color: #fff;
        }
        .btn-accent:hover {
            background-color: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(232, 146, 60, 0.25);
        }
        .btn-outline {
            background-color: transparent;
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .btn-outline:hover {
            background-color: var(--color-primary-light);
            transform: translateY(-2px);
        }
        .btn-white {
            background-color: #fff;
            color: var(--color-primary);
        }
        .btn-white:hover {
            background-color: var(--color-primary-light);
            transform: translateY(-2px);
        }
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            font-size: 0.8rem;
            font-weight: 500;
            background-color: var(--color-primary-light);
            color: var(--color-primary);
            line-height: 1.4;
        }
        .tag-accent {
            background-color: var(--color-accent-light);
            color: var(--color-accent-hover);
        }
        .card {
            background-color: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(46, 111, 183, 0.3);
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background-color: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 4px rgba(29, 43, 58, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 1rem;
        }
        .logo {
            font-size: 1.12rem;
            font-weight: 800;
            color: var(--color-text);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }
        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            flex-shrink: 0;
        }
        .main-nav {
            display: none;
            align-items: center;
            gap: 0.25rem;
        }
        @media (min-width: 1024px) {
            .main-nav {
                display: flex;
            }
        }
        .nav-item {
            position: relative;
        }
        .nav-link {
            display: flex;
            align-items: center;
            padding: 0.75rem 0.9rem;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text);
            border-bottom: 2px solid transparent;
            transition: var(--transition);
        }
        .nav-link:hover,
        .nav-item.active .nav-link {
            color: var(--color-primary);
            border-bottom-color: var(--color-primary);
        }
        .mega-panel {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%);
            width: 360px;
            padding: 1rem;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 100;
        }
        .nav-item:hover .mega-panel,
        .nav-item:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
        }
        .mega-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--color-text);
            padding: 0.25rem 0.5rem 0.5rem;
            border-bottom: 1px solid var(--color-border);
            margin-bottom: 0.5rem;
        }
        .mega-list {
            list-style: none;
        }
        .mega-list li+li {
            border-top: 1px solid #F0F3F8;
        }
        .mega-list a {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.5rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .mega-list a:hover {
            background: var(--color-bg);
        }
        .mega-list img {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
            background: #E4ECF4;
        }
        .mega-list .mega-text {
            overflow: hidden;
        }
        .mega-list .mega-title-text {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            display: block;
        }
        .mega-list .mega-date {
            font-size: 0.78rem;
            color: var(--color-light-text);
        }
        .nav-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            background: #fff;
            cursor: pointer;
            color: var(--color-text);
            font-size: 1.25rem;
            flex-shrink: 0;
        }
        @media (min-width: 1024px) {
            .nav-toggle {
                display: none;
            }
        }
        .nav-cta {
            display: none;
            margin-left: 0.5rem;
        }
        @media (min-width: 1024px) {
            .nav-cta {
                display: inline-flex;
            }
        }
        .mobile-menu {
            position: fixed;
            inset: 0;
            background: #fff;
            z-index: 100;
            display: flex;
            flex-direction: column;
            padding: 1.5rem;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s;
        }
        .mobile-menu.open {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-menu-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 2rem;
        }
        .mobile-close {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            cursor: pointer;
            font-size: 1.25rem;
        }
        .mobile-nav-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.25rem;
        }
        .mobile-nav-list a {
            display: block;
            padding: 0.9rem 0.75rem;
            font-size: 1.05rem;
            font-weight: 600;
            border-radius: 10px;
            border-bottom: 1px solid #F0F3F8;
            color: var(--color-text);
        }
        .mobile-nav-list a:hover,
        .mobile-nav-list a.active {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }
        .hero {
            position: relative;
            background-image: linear-gradient(105deg, rgba(255, 255, 255, 0.94) 0%, rgba(255, 255, 255, 0.85) 50%, rgba(246, 249, 252, 0.92) 100%), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 4.5rem 0 4rem;
            overflow: hidden;
        }
        @media (min-width: 1024px) {
            .hero {
                padding: 7rem 0 6rem;
            }
        }
        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.4rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.25rem;
            color: var(--color-text);
        }
        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--color-muted);
            line-height: 1.7;
            max-width: 540px;
            margin-bottom: 2rem;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2.5rem;
        }
        .hero-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 1.25rem 1.75rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(223, 231, 239, 0.7);
        }
        .hero-trust span {
            display: flex;
            align-items: center;
            gap: 0.45rem;
            color: var(--color-muted);
            font-size: 0.9rem;
            font-weight: 500;
        }
        .hero-trust i {
            color: var(--color-primary);
        }
        .hero-visual {
            position: relative;
        }
        .hero-visual .main-img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            border: 4px solid rgba(255, 255, 255, 0.8);
            aspect-ratio: 4/3;
            object-fit: cover;
            width: 100%;
            background: #E4ECF4;
        }
        .hero-badge {
            position: absolute;
            padding: 0.5rem 1rem;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 9999px;
            font-size: 0.8rem;
            font-weight: 600;
            box-shadow: var(--shadow-sm);
            color: var(--color-text);
        }
        .hero-badge-1 {
            top: 1rem;
            left: -0.75rem;
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
        }
        .hero-badge-2 {
            bottom: 1.5rem;
            right: -0.5rem;
            background: #fff;
        }
        .hero-badge i {
            margin-right: 0.3rem;
        }
        .timeline {
            position: relative;
            list-style: none;
            max-width: 800px;
            margin: 0 auto;
        }
        .timeline::before {
            content: "";
            position: absolute;
            left: 20px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border);
        }
        .timeline-item {
            position: relative;
            padding: 0 0 2rem 3.5rem;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-dot {
            position: absolute;
            left: 11px;
            top: 8px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--color-primary);
            border: 4px solid var(--color-primary-light);
            box-shadow: 0 0 0 2px rgba(46, 111, 183, 0.2);
        }
        .timeline-time {
            display: inline-flex;
            align-items: center;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--color-primary);
            background: var(--color-primary-light);
            padding: 0.15rem 0.75rem;
            border-radius: 9999px;
            margin-bottom: 0.5rem;
            font-variant-numeric: tabular-nums;
        }
        .timeline-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius);
            padding: 1.25rem 1.5rem;
            transition: var(--transition);
        }
        .timeline-card:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-md);
        }
        .timeline-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.35rem;
            color: var(--color-text);
        }
        .timeline-card p {
            color: var(--color-muted);
            font-size: 0.95rem;
            margin-bottom: 0.5rem;
        }
        .timeline-tag {
            font-size: 0.78rem;
            color: var(--color-light-text);
            background: var(--color-bg);
            padding: 0.15rem 0.6rem;
            border-radius: 9999px;
            display: inline-block;
        }
        @media (min-width: 768px) {
            .timeline {
                max-width: 960px;
            }
            .timeline::before {
                left: 50%;
                margin-left: -1px;
            }
            .timeline-item {
                width: 50%;
                padding: 0 2.5rem 3rem 0;
                left: 0;
            }
            .timeline-item:nth-child(even) {
                left: 50%;
                padding: 0 0 3rem 2.5rem;
            }
            .timeline-dot {
                left: auto;
                right: -8px;
            }
            .timeline-item:nth-child(even) .timeline-dot {
                right: auto;
                left: -8px;
            }
            .timeline-time {
                position: absolute;
                top: 4px;
                right: calc(0% + 2.5rem + 24px);
                white-space: nowrap;
            }
            .timeline-item:nth-child(even) .timeline-time {
                right: auto;
                left: calc(0% + 2.5rem + 24px);
            }
        }
        .speaker-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }
        .speaker-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }
        .speaker-card img {
            width: 100%;
            aspect-ratio: 3/4;
            object-fit: cover;
            transition: transform 0.3s ease;
            background-color: #E4ECF4;
        }
        .speaker-card:hover img {
            transform: scale(1.03);
        }
        .speaker-body {
            padding: 1.25rem 1.5rem 1.5rem;
        }
        .speaker-name {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-text);
        }
        .speaker-role {
            font-size: 0.9rem;
            color: var(--color-accent-hover);
            font-weight: 500;
            margin-bottom: 0.5rem;
        }
        .speaker-desc {
            font-size: 0.9rem;
            color: var(--color-muted);
            line-height: 1.65;
        }
        .pricing-card {
            background: #fff;
            border: 2px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 2rem 1.75rem;
            position: relative;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
            height: 100%;
        }
        .pricing-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--color-accent);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 700;
            padding: 0.25rem 1.25rem;
            border-radius: 9999px;
            white-space: nowrap;
        }
        .pricing-recommended {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-md);
        }
        .pricing-name {
            font-size: 1.2rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 0.5rem;
        }
        .pricing-price {
            text-align: center;
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-primary);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .pricing-price small {
            font-size: 1rem;
            font-weight: 400;
            color: var(--color-light-text);
        }
        .pricing-features {
            list-style: none;
            margin-bottom: 1.5rem;
            flex-grow: 1;
        }
        .pricing-features li {
            padding: 0.4rem 0;
            display: flex;
            align-items: flex-start;
            gap: 0.5rem;
            font-size: 0.92rem;
            color: var(--color-muted);
        }
        .pricing-features i {
            color: var(--color-primary);
            margin-top: 0.3rem;
        }
        .pricing-features i.fa-xmark {
            color: #C0CBD6;
        }
        .form-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 2rem;
        }
        .form-label {
            display: block;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 0.4rem;
        }
        .form-label .req {
            color: #D9534F;
        }
        .form-input {
            width: 100%;
            min-height: 44px;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 0.6rem 0.9rem;
            background: #FAFCFE;
            color: var(--color-text);
            transition: var(--transition);
            outline: none;
        }
        .form-input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(46, 111, 183, 0.15);
            background: #fff;
        }
        .form-textarea {
            min-height: 100px;
            resize: vertical;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .news-item {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius);
            padding: 1rem;
            display: flex;
            gap: 1rem;
            transition: var(--transition);
            align-items: center;
        }
        .news-item:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .news-thumb {
            width: 120px;
            height: 90px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
            background: #E4ECF4;
            display: block;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-body {
            flex: 1;
            min-width: 0;
        }
        .news-body h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 0.25rem;
            color: var(--color-text);
            line-height: 1.4;
        }
        .news-body h3 a:hover {
            color: var(--color-primary);
        }
        .news-summary {
            font-size: 0.9rem;
            color: var(--color-muted);
            margin-bottom: 0.35rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.82rem;
            color: var(--color-light-text);
            flex-wrap: wrap;
        }
        @media (min-width: 768px) {
            .news-thumb {
                width: 160px;
                height: 100px;
            }
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
        }
        .faq-item:first-of-type {
            border-top: 1px solid var(--color-border);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 1.25rem 0;
            text-align: left;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-icon {
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--color-bg);
            color: var(--color-primary);
            font-size: 0.9rem;
            transition: transform 0.3s ease, background 0.3s, color 0.3s;
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--color-primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            color: var(--color-muted);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
            padding-bottom: 1.25rem;
        }
        .cta-block {
            background: linear-gradient(135deg, #EAF2FA 0%, #FDF2E6 100%);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
        }
        .site-footer {
            background-color: var(--color-footer);
            color: #B8C4CF;
            padding: 4rem 0 2rem;
        }
        .footer-title {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .footer-links a {
            color: #B8C4CF;
            font-size: 0.92rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.5rem;
            margin-top: 3rem;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            gap: 0.75rem;
            align-items: center;
            font-size: 0.85rem;
        }
        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
            }
        }
        .news-empty {
            background: #fff;
            border: 1px dashed var(--color-border);
            border-radius: var(--radius);
            padding: 3rem 2rem;
            text-align: center;
            color: var(--color-light-text);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(46, 111, 183, 0.4);
            outline-offset: 2px;
        }
        .mega-link {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.5rem 0.75rem;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text);
        }
        .mega-link:hover {
            background: var(--color-bg);
            color: var(--color-primary);
        }
        .mega-link i {
            font-size: 0.8rem;
            color: var(--color-light-text);
        }
        .badge-count {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-muted);
            background: var(--color-bg);
            padding: 0.2rem 0.6rem;
            border-radius: 9999px;
        }
        .radio-card {
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 0.75rem 1rem;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .radio-card:hover {
            border-color: var(--color-primary);
            background: var(--color-primary-light);
        }
        .radio-card input[type="radio"] {
            accent-color: var(--color-primary);
            width: 18px;
            height: 18px;
            flex-shrink: 0;
        }
        .radio-card:has(input:checked) {
            border-color: var(--color-primary);
            background: var(--color-primary-light);
            font-weight: 600;
        }

/* roulang page: category1 */
:root {
  --color-primary: #2E6FB7;
  --color-primary-hover: #245A93;
  --color-accent: #E8923C;
  --color-accent-hover: #D07F2B;
  --color-bg: #F6F9FC;
  --color-surface: #FFFFFF;
  --color-text: #1D2B3A;
  --color-muted: #5B6B7B;
  --color-border: #DFE7EF;
  --color-footer: #16283B;
  --radius-lg: 16px;
  --radius-md: 12px;
  --shadow-card: 0 1px 2px rgba(29,43,58,0.06), 0 8px 24px rgba(29,43,58,0.06);
  --shadow-hover: 0 4px 12px rgba(29,43,58,0.08), 0 16px 32px rgba(29,43,58,0.10);
}

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

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

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; }

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 1rem;
  padding-right: 1rem;
}
@media (min-width: 640px) {
  .container { padding-left: 1.5rem; padding-right: 1.5rem; }
}
@media (min-width: 1024px) {
  .container { padding-left: 2rem; padding-right: 2rem; }
}

.section { padding: 4rem 0; }
@media (min-width: 768px) { .section { padding: 5rem 0; } }
@media (min-width: 1024px) { .section { padding: 6rem 0; } }

.section-header { text-align: center; max-width: 720px; margin: 0 auto 3rem; }
.section-label {
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: #EAF2FA; color: var(--color-primary);
  font-size: 0.85rem; font-weight: 600;
  padding: 0.35rem 1rem; border-radius: 999px;
  margin-bottom: 0.9rem; letter-spacing: 0.02em;
}
.section-title {
  font-size: clamp(1.65rem, 3vw, 2.25rem);
  font-weight: 700; line-height: 1.3; color: var(--color-text);
}
.section-desc { margin-top: 0.9rem; color: var(--color-muted); font-size: 1rem; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  min-height: 44px; padding: 0.5rem 1.5rem;
  font-size: 1rem; font-weight: 600;
  border-radius: 10px;
  transition: all 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-hover); transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.btn-primary:active { transform: translateY(0); }
.btn-accent { background: var(--color-accent); color: #fff; }
.btn-accent:hover { background: var(--color-accent-hover); transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.btn-accent:active { transform: translateY(0); }
.btn-outline { background: #fff; color: var(--color-primary); border: 1px solid var(--color-primary); }
.btn-outline:hover { background: #EAF2FA; transform: translateY(-2px); }
.btn-outline:active { transform: translateY(0); transition: none; }
.btn:focus-visible { outline: 3px solid rgba(46,111,183,0.35); outline-offset: 2px; }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 4px 20px rgba(29,43,58,0.04);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; gap: 1rem;
}
.logo { display: flex; align-items: center; gap: 0.6rem; flex-shrink: 0; }
.logo-dot {
  width: 26px; height: 26px; border-radius: 9px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  box-shadow: 0 2px 8px rgba(232,146,60,0.3);
}
.logo span:last-child { font-size: 1.1rem; font-weight: 800; color: var(--color-text); letter-spacing: 0.01em; }

.main-nav { display: flex; align-items: center; gap: 0.25rem; }
.nav-item { position: relative; }
.nav-link {
  display: inline-flex; align-items: center; min-height: 44px;
  padding: 0.5rem 1.1rem; font-size: 0.95rem; font-weight: 500;
  color: var(--color-muted); border-radius: 8px;
  transition: color 0.2s; position: relative;
}
.nav-link::after {
  content: ""; position: absolute; left: 1.1rem; right: 1.1rem; bottom: 2px;
  height: 2px; border-radius: 2px; background: var(--color-primary);
  transform: scaleX(0); transform-origin: center; transition: transform 0.25s;
}
.nav-link:hover { color: var(--color-primary); background: #F6F9FC; }
.nav-link:hover::after { transform: scaleX(1); }
.nav-item.active .nav-link { color: var(--color-primary); font-weight: 700; }
.nav-item.active .nav-link::after { transform: scaleX(1); }

.mega-panel {
  position: absolute; top: calc(100% + 10px); left: 50%; transform: translateX(-50%) translateY(8px);
  width: 420px; background: #fff; border: 1px solid var(--color-border);
  border-radius: 14px; box-shadow: 0 20px 50px rgba(29,43,58,0.16);
  padding: 1.2rem; opacity: 0; visibility: hidden;
  transition: all 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
  z-index: 50;
}
.nav-item:hover .mega-panel,
.nav-item:focus-within .mega-panel {
  opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0);
}
.mega-title { font-size: 0.8rem; font-weight: 700; color: var(--color-muted); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.8rem; }
.mega-list { display: flex; flex-direction: column; gap: 0.4rem; }
.mega-list a { display: flex; align-items: center; gap: 0.8rem; padding: 0.6rem; border-radius: 10px; transition: background 0.2s; }
.mega-list a:hover { background: #F6F9FC; }
.mega-list img { width: 56px; height: 40px; object-fit: cover; border-radius: 8px; background: #E4ECF4; flex-shrink: 0; }
.mega-text { display: flex; flex-direction: column; line-height: 1.3; }
.mega-title-text { font-size: 0.92rem; font-weight: 600; color: var(--color-text); }
.mega-date { font-size: 0.78rem; color: var(--color-muted); }
.mega-more { display: inline-flex; align-items: center; gap: 0.3rem; margin-top: 0.7rem; font-size: 0.88rem; font-weight: 600; color: var(--color-primary); padding: 0.4rem 0.6rem; }
.mega-more:hover { color: var(--color-primary-hover); }

.header-actions { display: flex; align-items: center; gap: 0.75rem; }
.nav-toggle { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; color: var(--color-text); border-radius: 10px; font-size: 1.2rem; }
.nav-toggle:hover { background: #F6F9FC; }

.mobile-menu {
  position: fixed; inset: 0; z-index: 200; background: #fff;
  display: flex; flex-direction: column;
  transform: translateX(100%); transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu-header { display: flex; align-items: center; justify-content: space-between; height: 72px; padding: 0 1.5rem; border-bottom: 1px solid var(--color-border); }
.mobile-menu-close { width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; color: var(--color-text); border-radius: 10px; }
.mobile-menu-close:hover { background: #F6F9FC; }
.mobile-menu-body { flex: 1; overflow-y: auto; padding: 1.5rem; }
.mobile-menu-item { display: flex; flex-direction: column; border-bottom: 1px solid var(--color-border); }
.mobile-menu-item > a { padding: 1rem 0; font-size: 1.1rem; font-weight: 600; color: var(--color-text); }
.mobile-menu-item.active > a { color: var(--color-primary); }
.mobile-menu-sub { padding: 0 0 1rem; display: flex; flex-direction: column; gap: 0.5rem; }
.mobile-menu-sub a { padding: 0.5rem 0.75rem; font-size: 0.95rem; color: var(--color-muted); border-radius: 8px; }
.mobile-menu-sub a:hover { background: #F6F9FC; color: var(--color-primary); }
.mobile-menu-cta { padding: 1.5rem 1.5rem 2.5rem; border-top: 1px solid var(--color-border); background: #fff; }

/* Page Hero */
.page-hero {
  position: relative;
  background: linear-gradient(100deg, rgba(255,255,255,0.97) 0%, rgba(255,255,255,0.88) 50%, rgba(255,255,255,0.70) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom: 1px solid var(--color-border);
  padding: 4.5rem 0 5rem;
}
@media (min-width: 1024px) {
  .page-hero { padding: 7rem 0 8rem; }
}
.breadcrumb {
  display: flex; align-items: center; flex-wrap: wrap; gap: 0.4rem;
  font-size: 0.88rem; color: var(--color-muted); margin-bottom: 1.5rem;
}
.breadcrumb a { color: var(--color-primary); font-weight: 500; }
.breadcrumb a:hover { color: var(--color-primary-hover); }
.breadcrumb .sep { color: #B8C4CF; }
.breadcrumb .current { color: var(--color-muted); font-weight: 500; }
.page-hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 800; line-height: 1.2; color: var(--color-text);
  margin-bottom: 1.25rem;
}
.page-hero h1 .accent { color: var(--color-accent); }
.page-hero .hero-desc {
  max-width: 620px; font-size: 1.08rem; line-height: 1.8;
  color: var(--color-muted); margin-bottom: 2rem;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 1rem; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 1.5rem; margin-top: 2.8rem; }
.hero-tags .tag-item { display: flex; align-items: center; gap: 0.5rem; font-size: 0.92rem; color: var(--color-muted); }
.hero-tags .tag-item i { color: var(--color-primary); font-size: 1rem; }

/* Stats */
.stats-section { background: var(--color-surface); border-bottom: 1px solid var(--color-border); }
.stats-grid { display: grid; grid-template-columns: 1fr; gap: 2rem; }
@media (min-width: 640px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .stats-grid { grid-template-columns: repeat(4, 1fr); } }
.stat-card { text-align: center; padding: 1rem 0.5rem; }
.stat-number { font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 800; color: var(--color-primary); line-height: 1.2; letter-spacing: -0.02em; }
.stat-label { margin-top: 0.5rem; color: var(--color-muted); font-size: 0.92rem; }

/* Timeline Section */
.timeline-section { background: var(--color-bg); }
.timeline-container { max-width: 860px; margin: 0 auto; position: relative; padding-left: 30px; }
.timeline-container::before {
  content: ""; position: absolute; left: 9px; top: 8px; bottom: 8px; width: 2px;
  background: linear-gradient(to bottom, var(--color-primary), #D6E4F2);
  border-radius: 2px;
}
.timeline-item { position: relative; padding-bottom: 2.5rem; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item .dot {
  position: absolute; left: -30px; top: 6px; width: 20px; height: 20px;
  border-radius: 50%; background: #fff; border: 3px solid var(--color-primary);
  display: flex; align-items: center; justify-content: center;
}
.timeline-item .dot::after {
  content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--color-primary);
}
.timeline-card {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md);
  padding: 1.4rem 1.6rem; box-shadow: var(--shadow-card);
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}
.timeline-card:hover { border-color: var(--color-primary); box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.timeline-time { display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.88rem; font-weight: 700; color: var(--color-primary); background: #EAF2FA; padding: 0.25rem 0.8rem; border-radius: 999px; font-variant-numeric: tabular-nums; }
.timeline-card h3 { font-size: 1.18rem; font-weight: 700; color: var(--color-text); margin-top: 0.8rem; }
.timeline-card p { font-size: 0.95rem; color: var(--color-muted); margin-top: 0.5rem; line-height: 1.7; }
.timeline-tag { margin-top: 0.8rem; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.timeline-tag span { display: inline-flex; align-items: center; gap: 0.3rem; font-size: 0.8rem; color: #fff; background: var(--color-primary); padding: 0.2rem 0.7rem; border-radius: 999px; }
.timeline-tag span.alt { background: var(--color-accent); }

/* Topics Section */
.topics-section { background: var(--color-surface); }
.topic-grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
@media (min-width: 768px) { .topic-grid { grid-template-columns: 1.2fr 1fr 1fr; grid-template-rows: auto auto; } }
.topic-feature {
  grid-row: span 2; background: linear-gradient(135deg, #EFF5FA, #FDF2E6);
  border: 1px solid #D6E4F2; border-radius: var(--radius-lg);
  padding: 2rem; display: flex; flex-direction: column; justify-content: space-between;
}
.topic-feature .topic-icon { width: 56px; height: 56px; border-radius: 16px; background: #fff; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; color: var(--color-primary); box-shadow: var(--shadow-card); margin-bottom: 1.5rem; }
.topic-feature h3 { font-size: 1.35rem; font-weight: 700; margin-bottom: 0.75rem; }
.topic-feature p { color: var(--color-muted); font-size: 0.95rem; line-height: 1.75; }
.topic-feature .feature-link { margin-top: 1.5rem; display: inline-flex; align-items: center; gap: 0.4rem; color: var(--color-primary); font-weight: 600; }
.topic-feature .feature-link:hover { color: var(--color-primary-hover); }
.topic-card {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  padding: 1.6rem; transition: all 0.25s; display: flex; flex-direction: column;
}
.topic-card:hover { border-color: var(--color-primary); box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.topic-card .topic-icon { width: 46px; height: 46px; border-radius: 12px; background: #EAF2FA; display: flex; align-items: center; justify-content: center; font-size: 1.25rem; color: var(--color-primary); margin-bottom: 1rem; }
.topic-card h3 { font-size: 1.1rem; font-weight: 700; }
.topic-card p { font-size: 0.92rem; color: var(--color-muted); margin-top: 0.5rem; line-height: 1.7; flex: 1; }
.topic-card a { margin-top: 1rem; display: inline-flex; align-items: center; gap: 0.3rem; color: var(--color-primary); font-size: 0.9rem; font-weight: 600; }
.topic-card a:hover { color: var(--color-primary-hover); }

/* Process Section */
.process-section { background: linear-gradient(180deg, #F6F9FC 0%, #EFF5FA 100%); }
.process-grid { display: grid; grid-template-columns: 1fr; gap: 2rem; }
@media (min-width: 768px) { .process-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .process-grid { grid-template-columns: repeat(4, 1fr); gap: 1.5rem; } }
.process-step { position: relative; padding: 2rem 1rem 1rem; text-align: center; }
.process-step .step-num {
  width: 56px; height: 56px; margin: 0 auto; border-radius: 50%;
  background: #fff; border: 2px solid var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; font-weight: 800; color: var(--color-primary);
  position: relative; z-index: 2; box-shadow: var(--shadow-card);
}
.process-step .step-num::before {
  content: ""; position: absolute; inset: -6px; border-radius: 50%;
  border: 2px solid #EAF2FA;
}
.process-step h3 { margin-top: 1rem; font-size: 1.05rem; font-weight: 700; }
.process-step p { margin-top: 0.4rem; font-size: 0.9rem; color: var(--color-muted); line-height: 1.65; }
.process-step:not(:last-child)::after {
  content: ""; position: absolute; top: 56px; left: calc(50% + 34px); width: calc(100% - 56px); height: 0;
  border-top: 1px dashed #B8C4CF;
}
@media (min-width: 1024px) {
  .process-step:not(:last-child)::after { height: 0; border-top: 1px dashed #B8C4CF; }
}

/* FAQ Section */
.faq-section { background: var(--color-surface); }
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-item:first-child { border-top: 1px solid var(--color-border); }
.faq-question {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  padding: 1.4rem 0.5rem; text-align: left; font-size: 1.02rem; font-weight: 600;
  color: var(--color-text); transition: color 0.2s;
  min-height: 56px;
}
.faq-question:hover { color: var(--color-primary); }
.faq-question:focus-visible { outline: 2px solid rgba(46,111,183,0.4); border-radius: 8px; }
.faq-icon { flex-shrink: 0; width: 32px; height: 32px; border-radius: 50%; background: #F6F9FC; display: flex; align-items: center; justify-content: center; transition: transform 0.3s, background 0.3s; }
.faq-item.open .faq-icon { transform: rotate(45deg); background: #EAF2FA; color: var(--color-primary); }
.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.3s ease;
  padding: 0 0.5rem;
}
.faq-answer-inner { padding-bottom: 1.4rem; color: var(--color-muted); line-height: 1.75; font-size: 0.96rem; }
.faq-item.open .faq-answer { max-height: 320px; }

/* CTA Section */
.cta-section {
  background: linear-gradient(120deg, var(--color-footer), #1E3A55);
  padding: 4.5rem 0; position: relative; overflow: hidden;
}
.cta-section::before {
  content: ""; position: absolute; right: -80px; top: -80px; width: 300px; height: 300px;
  border-radius: 50%; background: rgba(46,111,183,0.25); filter: blur(60px);
}
.cta-section::after {
  content: ""; position: absolute; left: -60px; bottom: -100px; width: 260px; height: 260px;
  border-radius: 50%; background: rgba(232,146,60,0.18); filter: blur(60px);
}
.cta-inner { position: relative; z-index: 2; text-align: center; max-width: 720px; margin: 0 auto; }
.cta-inner h2 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); color: #fff; font-weight: 800; line-height: 1.3; }
.cta-inner p { color: #B8C4CF; margin-top: 1rem; font-size: 1.02rem; line-height: 1.7; }
.cta-buttons { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; margin-top: 2rem; }
.cta-inner .btn-accent { box-shadow: 0 8px 24px rgba(232,146,60,0.4); }
.cta-inner .btn-outline { border-color: #4A6A8A; color: #D8E2EC; background: transparent; }
.cta-inner .btn-outline:hover { background: rgba(255,255,255,0.08); color: #fff; border-color: #B8C4CF; }
.cta-note { margin-top: 1.5rem; font-size: 0.85rem; color: #7B8A99; }

/* Footer */
.site-footer { background: var(--color-footer); color: #B8C4CF; padding-top: 4rem; }
.footer-title { font-size: 0.95rem; font-weight: 700; color: #fff; margin-bottom: 1.2rem; }
.footer-links { display: flex; flex-direction: column; gap: 0.65rem; }
.footer-links a { color: #B8C4CF; font-size: 0.92rem; transition: color 0.2s; display: inline-flex; align-items: center; gap: 0.4rem; }
.footer-links a:hover { color: #fff; }
.footer-links a::before { content: "›"; color: var(--color-accent); font-weight: 700; }
.footer-bottom {
  margin-top: 3rem; padding: 1.5rem 0 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 0.75rem; font-size: 0.85rem; color: #7B8A99;
}

/* Responsive */
@media (max-width: 1023px) {
  .main-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-cta { display: none; }
  .mega-panel { display: none; } /* In mobile, sub items are linear in drawer */
}
@media (max-width: 640px) {
  .page-hero h1 { font-size: 2rem; }
  .hero-tags { gap: 0.75rem; }
  .timeline-container { padding-left: 24px; }
  .timeline-item .dot { left: -24px; width: 16px; height: 16px; }
  .timeline-card { padding: 1.1rem 1.2rem; }
}

/* roulang page: article */
:root {
            --color-primary: #2E6FB7;
            --color-primary-hover: #245A93;
            --color-primary-light: #EAF2FA;
            --color-accent: #E8923C;
            --color-accent-hover: #D07F2B;
            --color-accent-light: #FDF2E6;
            --color-bg: #F6F9FC;
            --color-surface: #FFFFFF;
            --color-text: #1D2B3A;
            --color-muted: #5B6B7B;
            --color-muted-light: #7B8A99;
            --color-border: #DFE7EF;
            --color-footer: #16283B;
            --radius-card: 1rem;
            --radius-btn: 0.5rem;
            --shadow-card: 0 1px 2px rgba(29,43,58,0.06), 0 8px 24px rgba(29,43,58,0.06);
            --shadow-hover: 0 4px 8px rgba(29,43,58,0.08), 0 16px 32px rgba(29,43,58,0.10);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: var(--color-primary);
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--color-primary-hover);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input,
        textarea,
        select {
            font-family: inherit;
            outline: none;
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        @media (min-width: 640px) {
            .container {
                padding: 0 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding: 0 2rem;
            }
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 4px rgba(29, 43, 58, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 1.5rem;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--color-text);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .logo:hover {
            color: var(--color-text);
        }
        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 9999px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-item {
            position: relative;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 0.6rem 0.9rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-muted);
            border-radius: 0.5rem;
            transition: all 0.2s ease;
            position: relative;
            min-height: 44px;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 0.9rem;
            right: 0.9rem;
            bottom: 0.2rem;
            height: 2px;
            border-radius: 2px;
            background: var(--color-primary);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform 0.28s ease;
        }
        .nav-item:hover .nav-link,
        .nav-item:focus-within .nav-link,
        .nav-item.active .nav-link {
            color: var(--color-primary);
        }
        .nav-item:hover .nav-link::after,
        .nav-item:focus-within .nav-link::after,
        .nav-item.active .nav-link::after {
            transform: scaleX(1);
        }

        .mega-panel {
            position: absolute;
            top: calc(100% + 8px);
            left: 50%;
            transform: translateX(-50%) translateY(8px);
            width: 400px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: 0.75rem;
            box-shadow: 0 12px 40px rgba(29, 43, 58, 0.14);
            padding: 1.25rem 1.25rem 0.75rem;
            opacity: 0;
            visibility: hidden;
            transition: all 0.25s ease;
            z-index: 120;
        }
        .nav-item:hover .mega-panel,
        .nav-item:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }
        .mega-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--color-muted-light);
            text-transform: none;
            letter-spacing: 0.04em;
            margin-bottom: 0.75rem;
        }
        .mega-list {
            list-style: none;
        }
        .mega-list li + li {
            border-top: 1px solid #EFF3F7;
        }
        .mega-list li a {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.65rem 0;
            border-radius: 0.5rem;
            transition: background 0.2s ease;
        }
        .mega-list li a:hover {
            background: var(--color-primary-light);
        }
        .mega-list img {
            width: 56px;
            height: 44px;
            object-fit: cover;
            border-radius: 0.5rem;
            flex-shrink: 0;
            background: #E4ECF4;
        }
        .mega-text {
            display: flex;
            flex-direction: column;
            gap: 0.1rem;
            overflow: hidden;
        }
        .mega-title-text {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .mega-date {
            font-size: 0.78rem;
            color: var(--color-muted-light);
        }
        .mega-more {
            display: block;
            text-align: center;
            margin-top: 0.5rem;
            padding: 0.5rem 0 0.25rem;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--color-primary);
            border-top: 1px solid #EFF3F7;
        }
        .mega-more:hover {
            color: var(--color-primary-hover);
        }

        .btn-header {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.92rem;
            font-weight: 600;
            padding: 0.6rem 1.2rem;
            border-radius: 9999px;
            box-shadow: 0 2px 8px rgba(232, 146, 60, 0.30);
            transition: all 0.25s ease;
            white-space: nowrap;
            min-height: 44px;
        }
        .btn-header:hover {
            background: var(--color-accent-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(232, 146, 60, 0.40);
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--color-text);
            border-radius: 0.5rem;
            transition: background 0.2s ease;
        }
        .menu-toggle:hover {
            background: var(--color-primary-light);
        }

        @media (max-width: 1023px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--color-surface);
                border-bottom: 1px solid var(--color-border);
                box-shadow: 0 8px 24px rgba(29, 43, 58, 0.08);
                flex-direction: column;
                align-items: stretch;
                padding: 1rem 1.5rem;
                gap: 0.25rem;
            }
            .main-nav.open {
                display: flex;
            }
            .nav-link {
                width: 100%;
                justify-content: space-between;
                padding: 0.8rem 0.5rem;
            }
            .mega-panel {
                position: static;
                transform: none;
                width: 100%;
                box-shadow: none;
                border: none;
                border-left: 2px solid var(--color-primary);
                border-radius: 0;
                padding: 0.5rem 0 0.5rem 1rem;
                opacity: 1;
                visibility: visible;
                margin-top: 0.25rem;
                background: var(--color-bg);
            }
            .menu-toggle {
                display: inline-flex;
            }
            .btn-header {
                display: none;
            }
        }
        @media (min-width: 1024px) {
            .main-nav {
                display: flex !important;
            }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            font-size: 0.95rem;
            font-weight: 600;
            padding: 0.7rem 1.5rem;
            border-radius: var(--radius-btn);
            transition: all 0.25s ease;
            min-height: 44px;
            border: 1px solid transparent;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(46, 111, 183, 0.25);
        }
        .btn-primary:hover {
            background: var(--color-primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(46, 111, 183, 0.35);
        }
        .btn-outline {
            background: var(--color-surface);
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-hover);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(232, 146, 60, 0.3);
        }
        .btn-accent:hover {
            background: var(--color-accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(232, 146, 60, 0.4);
        }
        .btn-light {
            background: #fff;
            color: var(--color-primary);
            border: 1px solid rgba(255, 255, 255, 0.5);
        }
        .btn-light:hover {
            background: rgba(255, 255, 255, 0.9);
            color: var(--color-primary-hover);
            transform: translateY(-2px);
        }

        /* ===== Article Hero Banner ===== */
        .article-hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 4rem 0 3.5rem;
            border-bottom: 1px solid var(--color-border);
        }
        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(246, 249, 252, 0.95) 20%, rgba(255, 255, 255, 0.7) 55%, rgba(234, 242, 250, 0.75) 100%);
        }
        .article-hero .container {
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.4rem;
            font-size: 0.86rem;
            color: var(--color-muted);
            margin-bottom: 1.25rem;
        }
        .breadcrumb a {
            color: var(--color-muted);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb .separator {
            color: #B8C4CF;
        }
        .breadcrumb .current {
            color: var(--color-muted);
            font-weight: 500;
            max-width: 280px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(46, 111, 183, 0.1);
            color: var(--color-primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.35rem 0.9rem;
            border-radius: 9999px;
            margin-bottom: 1rem;
        }

        /* ===== Article Layout ===== */
        .article-section {
            padding: 3rem 0 4rem;
        }
        .article-wrapper {
            max-width: 860px;
            margin: 0 auto;
        }

        .article-card {
            background: var(--color-surface);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            padding: 2.5rem 2rem;
            margin-top: -2.5rem;
            position: relative;
            z-index: 2;
        }
        @media (min-width: 768px) {
            .article-card {
                padding: 3rem 3rem;
            }
        }

        .article-header h1 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            line-height: 1.3;
            font-weight: 800;
            color: var(--color-text);
            margin-bottom: 1rem;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem 1.5rem;
            font-size: 0.86rem;
            color: var(--color-muted-light);
            margin-bottom: 1.5rem;
            padding-bottom: 1.25rem;
            border-bottom: 1px solid var(--color-border);
        }
        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .article-meta .meta-item i {
            font-size: 0.9rem;
            color: var(--color-primary);
        }
        .article-meta .meta-category {
            display: inline-flex;
            align-items: center;
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 0.2rem 0.7rem;
            border-radius: 9999px;
        }

        .article-summary {
            background: var(--color-primary-light);
            border-left: 4px solid var(--color-primary);
            border-radius: 0.5rem;
            padding: 1rem 1.25rem;
            font-size: 0.95rem;
            color: var(--color-muted);
            line-height: 1.75;
            margin-bottom: 1.75rem;
        }

        .article-cover {
            border-radius: var(--radius-card);
            overflow: hidden;
            margin-bottom: 2rem;
            box-shadow: 0 4px 16px rgba(29, 43, 58, 0.08);
            background: #E4ECF4;
        }
        .article-cover img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }

        .article-body {
            font-size: 1rem;
            line-height: 1.85;
            color: var(--color-text);
        }
        .article-body p {
            margin-bottom: 1.4em;
        }
        .article-body h2,
        .article-body h3,
        .article-body h4 {
            margin-top: 2em;
            margin-bottom: 0.8em;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.4;
        }
        .article-body h2 {
            font-size: 1.45rem;
        }
        .article-body h3 {
            font-size: 1.25rem;
        }
        .article-body h4 {
            font-size: 1.1rem;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 1.4em;
            padding-left: 1.5em;
        }
        .article-body ul li,
        .article-body ol li {
            margin-bottom: 0.5em;
        }
        .article-body ul li::marker {
            color: var(--color-primary);
        }
        .article-body ol li::marker {
            color: var(--color-primary);
            font-weight: 600;
        }
        .article-body blockquote {
            border-left: 4px solid var(--color-primary);
            background: var(--color-primary-light);
            padding: 1rem 1.5rem;
            border-radius: 0.5rem;
            margin: 1.5rem 0;
            color: var(--color-muted);
            font-style: normal;
        }
        .article-body blockquote p {
            margin-bottom: 0;
        }
        .article-body img {
            border-radius: var(--radius-card);
            margin: 1.5rem 0;
        }
        .article-body a {
            color: var(--color-primary);
            font-weight: 500;
            border-bottom: 1px solid rgba(46, 111, 183, 0.3);
            transition: border-color 0.2s ease;
        }
        .article-body a:hover {
            border-bottom-color: var(--color-primary);
        }

        .not-found {
            text-align: center;
            padding: 3rem 1.5rem;
        }
        .not-found .icon {
            font-size: 3rem;
            color: var(--color-muted-light);
            margin-bottom: 1rem;
        }
        .not-found h2 {
            font-size: 1.6rem;
            margin-bottom: 0.75rem;
        }
        .not-found p {
            color: var(--color-muted);
            margin-bottom: 1.5rem;
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 4rem 0;
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
        }
        .section-title {
            font-size: clamp(1.4rem, 2.5vw, 1.8rem);
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 1.75rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .section-title::after {
            content: "";
            flex: 0 0 48px;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
        }

        .related-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }
        @media (min-width: 768px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .related-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(46, 111, 183, 0.25);
        }
        .related-card .thumb {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #E4ECF4;
        }
        .related-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .related-card:hover .thumb img {
            transform: scale(1.04);
        }
        .related-card .body {
            padding: 1.25rem 1.25rem 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            flex: 1;
        }
        .related-card .cat {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-primary-light);
            padding: 0.15rem 0.6rem;
            border-radius: 9999px;
            align-self: flex-start;
        }
        .related-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.4;
            transition: color 0.2s ease;
        }
        .related-card:hover h3 {
            color: var(--color-primary);
        }
        .related-card p {
            font-size: 0.85rem;
            color: var(--color-muted);
            line-height: 1.6;
            flex: 1;
        }
        .related-card .meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--color-muted-light);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 4rem 0;
            background: var(--color-bg);
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: 0.75rem;
            margin-bottom: 0.75rem;
            overflow: hidden;
            transition: border-color 0.2s ease;
        }
        .faq-item:hover {
            border-color: rgba(46, 111, 183, 0.3);
        }
        .faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.1rem 1.5rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            min-height: 52px;
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .icon {
            width: 32px;
            height: 32px;
            border-radius: 9999px;
            background: var(--color-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-size: 1rem;
            flex-shrink: 0;
            transition: transform 0.35s ease, background 0.3s ease, color 0.3s ease;
        }
        .faq-item[open] summary .icon {
            transform: rotate(45deg);
            background: var(--color-primary);
            color: #fff;
        }
        .faq-item .answer {
            padding: 0 1.5rem 1.25rem;
            font-size: 0.92rem;
            color: var(--color-muted);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 4rem 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat fixed;
            position: relative;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(22, 40, 59, 0.85);
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-box {
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
            color: #fff;
        }
        .cta-box h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .cta-box p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 1.75rem;
            line-height: 1.7;
        }
        .cta-box .btn-group {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.75rem;
        }
        @media (min-width: 640px) {
            .cta-box .btn-group {
                flex-direction: row;
                justify-content: center;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-footer);
            color: #B8C4CF;
            padding: 4rem 0 2rem;
        }
        .footer-title {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 0.55rem;
        }
        .footer-links a {
            color: #B8C4CF;
            font-size: 0.9rem;
            transition: color 0.2s ease, padding-left 0.2s ease;
            display: inline-block;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 0.25rem;
        }
        .footer-bottom {
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            font-size: 0.85rem;
            color: rgba(184, 196, 207, 0.7);
        }
        .footer-bottom span + span {
            margin-left: 1rem;
        }
        @media (max-width: 640px) {
            .footer-bottom {
                display: flex;
                flex-direction: column;
                gap: 0.25rem;
            }
            .footer-bottom span + span {
                margin-left: 0;
            }
        }

        /* ===== Back to top ===== */
        .back-top {
            position: fixed;
            bottom: 1.5rem;
            right: 1.5rem;
            width: 44px;
            height: 44px;
            border-radius: 9999px;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(46, 111, 183, 0.3);
            z-index: 90;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }
        .back-top.show {
            opacity: 1;
            visibility: visible;
        }
        .back-top:hover {
            background: var(--color-primary-hover);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ===== Focus visibility ===== */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 3px solid rgba(46, 111, 183, 0.4);
            outline-offset: 2px;
        }
        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--color-primary) !important;
            box-shadow: 0 0 0 3px rgba(46, 111, 183, 0.15);
        }

/* roulang page: category2 */
:root {
            --color-primary: #2E6FB7;
            --color-primary-hover: #245A93;
            --color-accent: #E8923C;
            --color-bg: #F6F9FC;
            --color-surface: #FFFFFF;
            --color-text: #1D2B3A;
            --color-muted: #5B6B7B;
            --color-border: #DFE7EF;
            --color-footer: #16283B;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.75;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: 80rem;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 640px) {
            .container {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 4px rgba(29, 43, 58, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 1rem;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--color-text);
            white-space: nowrap;
        }
        .logo-dot {
            width: 12px;
            height: 12px;
            border-radius: 9999px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            flex-shrink: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 2rem;
        }
        .nav-item {
            position: relative;
            display: flex;
            align-items: center;
        }
        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-muted);
            padding: 0.5rem 0.25rem;
            position: relative;
            transition: color 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: width 0.25s ease;
        }
        .nav-item.active .nav-link,
        .nav-link:hover {
            color: var(--color-primary);
        }
        .nav-item.active .nav-link::after,
        .nav-link:hover::after {
            width: 100%;
        }
        .mega-panel {
            position: absolute;
            top: calc(100% + 12px);
            left: 50%;
            transform: translateX(-50%) translateY(8px);
            width: 420px;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 14px;
            box-shadow: 0 12px 32px rgba(29, 43, 58, 0.12);
            padding: 1.2rem 1.4rem;
            opacity: 0;
            visibility: hidden;
            transition: all 0.25s ease;
            z-index: 60;
        }
        .nav-item:hover .mega-panel,
        .nav-item:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }
        .mega-title {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-textlight);
            letter-spacing: 0.05em;
            margin-bottom: 0.8rem;
            text-transform: uppercase;
        }
        .mega-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .mega-list li a {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            padding: 0.5rem;
            border-radius: 10px;
            transition: background 0.2s;
        }
        .mega-list li a:hover {
            background: var(--color-primary-light);
        }
        .mega-list li a img {
            width: 56px;
            height: 40px;
            object-fit: cover;
            border-radius: 8px;
            background: #E4ECF4;
        }
        .mega-text {
            display: flex;
            flex-direction: column;
            line-height: 1.4;
        }
        .mega-title-text {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text);
        }
        .mega-date {
            font-size: 0.78rem;
            color: var(--color-textlight);
        }
        .header-cta {
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 0.6rem 1.4rem;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.25s;
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }
        .header-cta:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(232, 146, 60, 0.3);
        }
        .header-cta i {
            font-size: 0.8rem;
            transition: transform 0.2s;
        }
        .header-cta:hover i {
            transform: translateX(3px);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--color-text);
            cursor: pointer;
            padding: 0.5rem;
        }
        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            width: 86%;
            max-width: 360px;
            height: 100vh;
            background: #fff;
            z-index: 100;
            box-shadow: -8px 0 32px rgba(0, 0, 0, 0.1);
            padding: 2rem 1.6rem;
            overflow-y: auto;
        }
        .mobile-nav.open {
            display: block;
        }
        .mobile-nav .close-btn {
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text);
            cursor: pointer;
            float: right;
        }
        .mobile-nav .mobile-links {
            list-style: none;
            padding: 0;
            margin: 3rem 0 0;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .mobile-nav .mobile-links a {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text);
            padding: 0.5rem 0;
            border-bottom: 1px solid var(--color-border);
            display: block;
        }
        .mobile-nav .mobile-links a.active {
            color: var(--color-primary);
        }
        @media (max-width: 1024px) {
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .header-cta {
                display: none;
            }
        }

        /* Buttons */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            padding: 0.75rem 1.8rem;
            border-radius: 10px;
            border: none;
            cursor: pointer;
            transition: all 0.25s;
            font-size: 1rem;
        }
        .btn-primary:hover {
            background: var(--color-primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(46, 111, 183, 0.25);
        }
        .btn-primary i {
            transition: transform 0.2s;
        }
        .btn-primary:hover i {
            transform: translateX(4px);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: #fff;
            color: var(--color-primary);
            font-weight: 600;
            padding: 0.75rem 1.8rem;
            border-radius: 10px;
            border: 1.5px solid var(--color-primary);
            cursor: pointer;
            transition: all 0.25s;
            font-size: 1rem;
        }
        .btn-outline:hover {
            background: var(--color-primary-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(46, 111, 183, 0.12);
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            padding: 0.75rem 2rem;
            border-radius: 10px;
            border: none;
            cursor: pointer;
            transition: all 0.25s;
            font-size: 1rem;
        }
        .btn-accent:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 146, 60, 0.3);
        }
        .btn-accent i {
            transition: transform 0.2s;
        }
        .btn-accent:hover i {
            transform: translateX(4px);
        }

        /* Hero */
        .page-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 5rem 0 4.5rem;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(255, 255, 255, 0.95) 30%, rgba(246, 249, 252, 0.75) 70%, rgba(234, 242, 250, 0.5) 100%);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--color-textlight);
            margin-bottom: 1.5rem;
        }
        .breadcrumb a {
            color: var(--color-primary);
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--color-primary-hover);
        }
        .breadcrumb i {
            font-size: 0.7rem;
            color: var(--color-textlight);
        }
        .page-hero h1 {
            font-size: clamp(2rem, 4.5vw, 3rem);
            font-weight: 800;
            line-height: 1.2;
            color: var(--color-text);
            margin: 0 0 1.2rem;
            max-width: 720px;
        }
        .page-hero .hero-sub {
            font-size: 1.05rem;
            color: var(--color-muted);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 2rem;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-top: 2.2rem;
        }
        .hero-tag {
            background: rgba(255, 255, 255, 0.85);
            border: 1px solid var(--color-border);
            padding: 0.35rem 1rem;
            border-radius: 9999px;
            font-size: 0.85rem;
            color: var(--color-muted);
        }

        /* Section */
        .section {
            padding: 4rem 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 3rem;
        }
        .section-head .section-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-primary);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 0.6rem;
        }
        .section-head h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        .section-head p {
            color: var(--color-muted);
            font-size: 1rem;
            line-height: 1.75;
        }

        /* Ticket Cards */
        .ticket-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.8rem;
        }
        @media (min-width: 768px) {
            .ticket-grid {
                grid-template-columns: repeat(3, 1fr);
                align-items: stretch;
            }
        }
        .ticket-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 16px;
            padding: 2rem 1.8rem;
            display: flex;
            flex-direction: column;
            position: relative;
            box-shadow: 0 1px 2px rgba(29, 43, 58, 0.04);
            transition: all 0.3s ease;
        }
        .ticket-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .ticket-card.featured {
            border: 2px solid var(--color-primary);
            box-shadow: 0 4px 20px rgba(46, 111, 183, 0.12);
        }
        .ticket-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--color-primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.25rem 1.2rem;
            border-radius: 9999px;
            white-space: nowrap;
        }
        .ticket-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 0.4rem;
            text-align: center;
        }
        .ticket-desc {
            font-size: 0.88rem;
            color: var(--color-muted);
            text-align: center;
            margin-bottom: 1.5rem;
        }
        .ticket-price {
            text-align: center;
            margin-bottom: 1.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid var(--color-border);
        }
        .ticket-price .price {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-primary);
        }
        .ticket-price .price small {
            font-size: 1rem;
            font-weight: 400;
            color: var(--color-textlight);
            margin-left: 4px;
        }
        .ticket-features {
            list-style: none;
            padding: 0;
            margin: 0 0 2rem;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 0.7rem;
        }
        .ticket-features li {
            display: flex;
            gap: 0.6rem;
            font-size: 0.9rem;
            color: var(--color-muted);
            align-items: flex-start;
        }
        .ticket-features li i {
            color: var(--color-primary);
            margin-top: 4px;
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .ticket-features li.off i {
            color: #C0CBD6;
        }
        .ticket-features li.off span {
            color: var(--color-textlight);
        }
        .ticket-card .btn-primary,
        .ticket-card .btn-outline {
            width: 100%;
            justify-content: center;
        }

        /* Process Steps */
        .process-section {
            background: var(--color-bg);
        }
        .process-steps {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.4rem;
            counter-reset: step;
        }
        @media (min-width: 768px) {
            .process-steps {
                grid-template-columns: repeat(4, 1fr);
                gap: 1.6rem;
            }
        }
        .process-step {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 14px;
            padding: 1.6rem 1.4rem;
            position: relative;
            transition: all 0.25s;
            text-align: left;
        }
        .process-step:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
            transform: translateY(-3px);
        }
        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 1rem;
            counter-increment: step;
        }
        .process-step .step-num::before {
            content: counter(step, decimal-leading-zero);
        }
        .process-step h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 0.5rem;
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--color-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* Services / Benefits */
        .benefit-section {
            background: #fff;
        }
        .benefit-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            align-items: center;
        }
        @media (min-width: 1024px) {
            .benefit-grid {
                grid-template-columns: 1fr 1fr;
                gap: 4rem;
            }
        }
        .benefit-content h2 {
            font-size: clamp(1.6rem, 3vw, 2rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1rem;
            color: var(--color-text);
        }
        .benefit-content .benefit-lead {
            color: var(--color-muted);
            font-size: 1rem;
            line-height: 1.75;
            margin-bottom: 1.5rem;
        }
        .benefit-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .benefit-list li {
            display: flex;
            gap: 0.8rem;
            align-items: flex-start;
        }
        .benefit-list li .benefit-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .benefit-list li:nth-child(2) .benefit-icon {
            background: var(--color-accent-light);
            color: var(--color-accent);
        }
        .benefit-list li:nth-child(3) .benefit-icon {
            background: #E8F5EE;
            color: #2F8F5B;
        }
        .benefit-list li .benefit-text h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 0.3rem;
        }
        .benefit-list li .benefit-text p {
            font-size: 0.9rem;
            color: var(--color-muted);
            line-height: 1.6;
            margin: 0;
        }
        .benefit-image {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
        }
        .benefit-image img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }
        .benefit-image .image-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 1.2rem;
            background: linear-gradient(to top, rgba(22, 40, 59, 0.85), transparent);
            color: #fff;
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* FAQ */
        .faq-section {
            background: var(--color-bg);
        }
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
            background: rgba(255, 255, 255, 0.6);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--color-border);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.2rem 0.5rem;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            transition: color 0.2s;
            gap: 1rem;
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1.5px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: var(--color-textmuted);
            transition: all 0.3s;
            flex-shrink: 0;
        }
        .faq-item.active .faq-question .faq-icon {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-answer-inner {
            padding: 0 0.5rem 1.2rem;
            color: var(--color-muted);
            font-size: 0.95rem;
            line-height: 1.75;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #1D3A5C, #2E6FB7);
            padding: 4.5rem 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
        }
        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1rem;
            line-height: 1.75;
            margin-bottom: 2rem;
        }
        .cta-section .btn-accent {
            box-shadow: 0 6px 20px rgba(232, 146, 60, 0.35);
        }

        /* Footer */
        .site-footer {
            background: var(--color-footer);
            color: #B8C4CF;
            padding: 3.5rem 0 0;
            font-size: 0.92rem;
        }
        .footer-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: #E8EEF3;
            margin-bottom: 1rem;
            position: relative;
            padding-bottom: 0.5rem;
        }
        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--color-accent);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .footer-links a {
            color: #B8C4CF;
            transition: color 0.2s, padding-left 0.2s;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 2.5rem;
            padding: 1.2rem 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 0.6rem;
            font-size: 0.85rem;
            color: #8A9BA9;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .page-hero {
                padding: 3.5rem 0 3rem;
            }
            .page-hero h1 {
                font-size: 1.7rem;
            }
            .page-hero .hero-sub {
                font-size: 0.95rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .section {
                padding: 3rem 0;
            }
            .section-head {
                margin-bottom: 2rem;
            }
            .ticket-grid {
                gap: 2rem;
                margin-top: 1rem;
            }
            .ticket-card.featured {
                order: -1;
            }
            .benefit-grid {
                gap: 2rem;
            }
        }
        @media (max-width: 520px) {
            .header-inner {
                height: 64px;
            }
            .logo {
                font-size: 1rem;
            }
            .logo-dot {
                width: 10px;
                height: 10px;
            }
            .ticket-card {
                padding: 1.5rem;
            }
            .ticket-price .price {
                font-size: 2rem;
            }
            .process-steps {
                gap: 1rem;
            }
            .faq-question {
                font-size: 0.92rem;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #2E6FB7;
            --color-primary-hover: #245A93;
            --color-accent: #E8923C;
            --color-accent-hover: #D07F2B;
            --color-bg: #F6F9FC;
            --color-surface: #FFFFFF;
            --color-text: #1D2B3A;
            --color-muted: #5B6B7B;
            --color-subtle: #7B8A99;
            --color-border: #DFE7EF;
            --color-footer: #16283B;
            --radius: 1rem;
            --radius-lg: 1.25rem;
            --shadow-card: 0 1px 2px rgba(29,43,58,0.06), 0 8px 24px rgba(29,43,58,0.06);
            --shadow-hover: 0 4px 12px rgba(29,43,58,0.08), 0 16px 32px rgba(29,43,58,0.10);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.75;
            font-size: 1rem;
        }

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

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

        ul {
            list-style: none;
        }

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

        .container {
            max-width: 80rem;
            margin: 0 auto;
            padding: 0 1rem;
        }

        @media (min-width: 640px) {
            .container {
                padding: 0 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding: 0 2rem;
            }
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 0 rgba(29, 43, 58, 0.02);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 1rem;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 0.625rem;
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--color-text);
            white-space: nowrap;
        }

        .logo-dot {
            width: 0.625rem;
            height: 0.625rem;
            border-radius: 9999px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .nav-item {
            position: relative;
            border-radius: 0.5rem;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.65rem 0.9rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text);
            border-radius: 0.5rem;
            min-height: 44px;
            transition: color 0.2s ease, background 0.2s ease;
            position: relative;
        }

        .nav-link:hover {
            color: var(--color-primary);
            background: #EFF5FA;
        }

        .nav-item.active>.nav-link {
            color: var(--color-primary);
            font-weight: 600;
        }

        .nav-item.active>.nav-link::after {
            content: "";
            position: absolute;
            bottom: 0.35rem;
            left: 0.9rem;
            right: 0.9rem;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
        }

        .nav-item .nav-link:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .mega-panel {
            position: absolute;
            top: calc(100% + 0.5rem);
            left: 50%;
            transform: translateX(-50%) translateY(6px);
            width: 360px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: 1rem;
            box-shadow: var(--shadow-hover);
            padding: 1.25rem;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
            z-index: 60;
        }

        .nav-item:hover .mega-panel,
        .nav-item:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        .mega-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--color-muted);
            padding-bottom: 0.65rem;
            margin-bottom: 0.5rem;
            border-bottom: 1px solid var(--color-border);
            letter-spacing: 0.02em;
        }

        .mega-list {
            display: flex;
            flex-direction: column;
            gap: 0.35rem;
        }

        .mega-list a {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.55rem;
            border-radius: 0.75rem;
            transition: background 0.2s ease;
        }

        .mega-list a:hover {
            background: #EFF5FA;
        }

        .mega-list img {
            width: 56px;
            height: 48px;
            object-fit: cover;
            border-radius: 0.5rem;
            background: #E4ECF4;
            flex-shrink: 0;
        }

        .mega-text {
            display: flex;
            flex-direction: column;
            gap: 0.15rem;
            min-width: 0;
        }

        .mega-title-text {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .mega-date {
            font-size: 0.8rem;
            color: var(--color-subtle);
        }

        .mega-more {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            margin-top: 0.85rem;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-primary);
            transition: gap 0.2s ease;
        }

        .mega-more:hover {
            gap: 0.6rem;
            color: var(--color-primary-hover);
        }

        .header-cta {
            margin-left: 0.75rem;
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 0.5rem;
            color: var(--color-text);
            font-size: 1.2rem;
            transition: background 0.2s ease;
        }

        .menu-toggle:hover {
            background: #EFF5FA;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            min-height: 44px;
            padding: 0.625rem 1.35rem;
            border-radius: 0.625rem;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.2s ease;
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .btn i {
            transition: transform 0.2s ease;
        }

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

        .btn-primary:hover {
            background: var(--color-primary-hover);
            border-color: var(--color-primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(46, 111, 183, 0.2);
        }

        .btn-primary:hover i {
            transform: translateX(3px);
        }

        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }

        .btn-outline:hover {
            background: #EAF2FA;
            transform: translateY(-2px);
        }

        .btn-accent {
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
        }

        .btn-accent:hover {
            background: var(--color-accent-hover);
            border-color: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(232, 146, 60, 0.22);
        }

        .btn-accent:hover i {
            transform: translateX(3px);
        }

        .btn-sm {
            min-height: 40px;
            padding: 0.5rem 1rem;
            font-size: 0.88rem;
        }

        .btn:active {
            transform: translateY(0);
        }

        .btn:focus-visible {
            outline: 3px solid rgba(46, 111, 183, 0.35);
            outline-offset: 2px;
        }

        /* Hero */
        .page-hero {
            position: relative;
            background-image: linear-gradient(120deg, rgba(255, 255, 255, 0.94) 55%, rgba(246, 249, 252, 0.82)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--color-border);
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
            padding: 3.5rem 1rem 4.5rem;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: #EAF2FA;
            color: var(--color-primary);
            border: 1px solid rgba(46, 111, 183, 0.18);
            padding: 0.3rem 0.85rem;
            border-radius: 9999px;
            font-size: 0.82rem;
            font-weight: 600;
            margin-bottom: 1.1rem;
        }

        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.4rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.01em;
            color: var(--color-text);
            margin-bottom: 1rem;
        }

        .hero-title span {
            color: var(--color-primary);
        }

        .hero-subtitle {
            font-size: 1.05rem;
            color: var(--color-muted);
            max-width: 32rem;
            line-height: 1.75;
            margin-bottom: 1.75rem;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            align-items: center;
            margin-bottom: 2rem;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem 1.25rem;
            font-size: 0.85rem;
            color: var(--color-subtle);
        }

        .hero-tags span {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }

        .hero-tags i {
            color: var(--color-primary);
        }

        .hero-media {
            position: relative;
        }

        .hero-media-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            border: 1px solid var(--color-border);
            aspect-ratio: 4/3;
            background: #E4ECF4;
        }

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

        .hero-float-card {
            position: absolute;
            bottom: 1rem;
            left: 1rem;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(8px);
            border: 1px solid var(--color-border);
            border-radius: 0.75rem;
            padding: 0.75rem 1rem;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text);
        }

        .hero-float-card i {
            color: var(--color-accent);
        }

        /* Section */
        .section {
            padding: 4rem 0;
        }

        .section-alt {
            background: #EFF5FA;
        }

        .section-inner {
            max-width: 80rem;
            margin: 0 auto;
            padding: 0 1rem;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: #EAF2FA;
            color: var(--color-primary);
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
        }

        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin-bottom: 0.6rem;
        }

        .section-lead {
            font-size: 1rem;
            color: var(--color-muted);
            max-width: 36rem;
            margin-bottom: 2rem;
        }

        /* Info Split */
        .info-split {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
            align-items: center;
        }

        .info-image-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            background: #E4ECF4;
            aspect-ratio: 4/3;
            position: relative;
        }

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

        .info-image-tag {
            position: absolute;
            top: 1rem;
            left: 1rem;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(6px);
            border-radius: 9999px;
            padding: 0.3rem 0.85rem;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-primary);
            box-shadow: var(--shadow-card);
        }

        .info-list {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
            margin-top: 1.25rem;
        }

        .info-item {
            display: flex;
            gap: 0.9rem;
            align-items: flex-start;
        }

        .info-item i {
            width: 2.25rem;
            height: 2.25rem;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 0.7rem;
            background: #EAF2FA;
            color: var(--color-primary);
            font-size: 0.95rem;
            margin-top: 0.2rem;
        }

        .info-item h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 0.25rem;
        }

        .info-item p {
            font-size: 0.9rem;
            color: var(--color-muted);
            line-height: 1.65;
        }

        /* Process / Timeline */
        .process-list {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
            margin-top: 1rem;
        }

        .process-item {
            display: flex;
            gap: 1.25rem;
            align-items: flex-start;
            position: relative;
            padding-bottom: 1.25rem;
        }

        .process-item:not(:last-child)::before {
            content: "";
            position: absolute;
            left: 1.1rem;
            top: 2.6rem;
            bottom: 0;
            width: 2px;
            background: var(--color-border);
            border-radius: 2px;
        }

        .process-item:last-child {
            padding-bottom: 0;
        }

        .process-number {
            width: 2.4rem;
            height: 2.4rem;
            flex-shrink: 0;
            border-radius: 9999px;
            background: var(--color-primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 0 0 5px rgba(46, 111, 183, 0.12);
            position: relative;
            z-index: 1;
        }

        .process-content {
            padding-top: 0.2rem;
        }

        .process-content h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 0.25rem;
        }

        .process-content p {
            font-size: 0.9rem;
            color: var(--color-muted);
            line-height: 1.65;
            max-width: 30rem;
        }

        .process-note {
            margin-top: 1.75rem;
            background: #EAF2FA;
            border-left: 3px solid var(--color-primary);
            padding: 0.9rem 1.1rem;
            border-radius: 0 0.75rem 0.75rem 0;
            font-size: 0.88rem;
            color: var(--color-muted);
            line-height: 1.7;
            max-width: 34rem;
        }

        .process-note i {
            color: var(--color-primary);
            margin-right: 0.4rem;
        }

        /* Three core columns */
        .core-columns {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .core-row {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius);
            padding: 1.4rem 1.5rem;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.2s ease, transform 0.2s ease;
        }

        .core-row:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .core-icon {
            width: 3.25rem;
            height: 3.25rem;
            flex-shrink: 0;
            border-radius: 0.9rem;
            background: linear-gradient(135deg, #EAF2FA, #FDF2E6);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: var(--color-primary);
        }

        .core-row:nth-child(2) .core-icon {
            color: var(--color-accent);
        }

        .core-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 0.25rem;
        }

        .core-body p {
            font-size: 0.9rem;
            color: var(--color-muted);
            line-height: 1.65;
        }

        .core-arrow {
            margin-left: auto;
            color: var(--color-subtle);
            font-size: 1rem;
            transition: transform 0.2s ease, color 0.2s ease;
        }

        .core-row:hover .core-arrow {
            transform: translateX(4px);
            color: var(--color-primary);
        }

        /* Row cards */
        .row-cards {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }

        .row-card {
            display: grid;
            grid-template-columns: 1fr;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease;
        }

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

        .row-card-img {
            aspect-ratio: 16/8;
            background: #E4ECF4;
            overflow: hidden;
        }

        .row-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .row-card:hover .row-card-img img {
            transform: scale(1.03);
        }

        .row-card-body {
            padding: 1.4rem 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.4rem;
        }

        .row-card-body .tag {
            align-self: flex-start;
        }

        .row-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
        }

        .row-card-body p {
            font-size: 0.9rem;
            color: var(--color-muted);
            line-height: 1.65;
        }

        .row-card-link {
            margin-top: 0.5rem;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-primary);
            transition: gap 0.2s ease;
        }

        .row-card-link:hover {
            gap: 0.55rem;
        }

        /* Stats */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.25rem;
        }

        .stat-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius);
            padding: 1.5rem 1.5rem;
            box-shadow: var(--shadow-card);
            text-align: center;
            transition: box-shadow 0.2s ease, transform 0.2s ease;
        }

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

        .stat-icon {
            width: 2.75rem;
            height: 2.75rem;
            border-radius: 0.8rem;
            background: #EAF2FA;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            margin-bottom: 0.75rem;
        }

        .stat-card:nth-child(2) .stat-icon {
            background: #FDF2E6;
            color: var(--color-accent);
        }

        .stat-card h3 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-text);
            line-height: 1.2;
            margin-bottom: 0.3rem;
        }

        .stat-card p {
            font-size: 0.88rem;
            color: var(--color-muted);
        }

        /* Tags / badges */
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            background: #EAF2FA;
            color: var(--color-primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.2rem 0.7rem;
            border-radius: 9999px;
            white-space: nowrap;
        }

        .tag-gold {
            background: #FDF2E6;
            color: var(--color-accent);
        }

        /* FAQ */
        .faq-list {
            max-width: 48rem;
            margin: 0 auto;
            border-top: 1px solid var(--color-border);
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            width: 100%;
            padding: 1.2rem 0.25rem;
            min-height: 60px;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            transition: color 0.2s ease;
        }

        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 1.75rem;
            height: 1.75rem;
            border-radius: 9999px;
            background: #EAF2FA;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            transition: transform 0.3s ease, background 0.3s ease;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--color-primary);
            color: #fff;
        }

        .faq-answer-wrap {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-answer-inner {
            padding: 0 0.25rem 1.25rem;
            font-size: 0.92rem;
            color: var(--color-muted);
            line-height: 1.75;
        }

        /* CTA Section */
        .cta-section {
            position: relative;
            background-image: linear-gradient(100deg, rgba(22, 40, 59, 0.92), rgba(22, 40, 59, 0.82)), url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            padding: 4rem 0;
            border-radius: var(--radius-lg);
            margin: 2rem 0;
        }

        .cta-inner {
            text-align: center;
            padding: 0 1.5rem;
        }

        .cta-inner h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
        }

        .cta-inner p {
            color: #B8C4CF;
            font-size: 1rem;
            max-width: 34rem;
            margin: 0 auto 1.75rem;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            justify-content: center;
            margin-bottom: 1.5rem;
        }

        .cta-note {
            font-size: 0.85rem;
            color: #8AA0B5;
        }

        /* Footer */
        .site-footer {
            background: var(--color-footer);
            padding: 3.5rem 0 2rem;
            color: #B8C4CF;
        }

        .footer-title {
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 0.75rem;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .footer-links a {
            font-size: 0.9rem;
            color: #B8C4CF;
            transition: color 0.2s ease;
        }

        .footer-links a:hover {
            color: #fff;
        }

        .footer-links span {
            font-size: 0.9rem;
            color: #B8C4CF;
        }

        .footer-bottom {
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: #8AA0B5;
        }

        /* Responsive */
        @media (min-width: 768px) {
            .hero-inner {
                grid-template-columns: 1fr 0.85fr;
                padding: 4.5rem 1.5rem 5rem;
            }

            .info-split {
                grid-template-columns: 0.9fr 1.1fr;
            }

            .row-card {
                grid-template-columns: 200px 1fr;
            }

            .row-card-img {
                aspect-ratio: auto;
                height: 100%;
                min-height: 160px;
            }

            .stats-grid {
                grid-template-columns: repeat(4, 1fr);
            }

            .section-inner {
                padding: 0 1.5rem;
            }

            .cta-section {
                margin: 3rem 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .section-inner {
                padding: 0 2rem;
            }

            .cta-section {
                margin: 4rem auto;
                max-width: 80rem;
                padding: 4.5rem 2rem;
            }
        }

        @media (max-width: 1023px) {
            .menu-toggle {
                display: inline-flex;
            }

            .main-nav {
                position: fixed;
                top: 0;
                right: 0;
                bottom: 0;
                width: 78%;
                max-width: 320px;
                background: var(--color-surface);
                box-shadow: -8px 0 32px rgba(29, 43, 58, 0.12);
                flex-direction: column;
                align-items: stretch;
                gap: 0.25rem;
                padding: 5.5rem 1.5rem 1.5rem;
                z-index: 55;
                overflow-y: auto;
                transform: translateX(100%);
                transition: transform 0.3s ease;
            }

            .main-nav.open {
                transform: translateX(0);
            }

            .nav-link {
                width: 100%;
                border-radius: 0.65rem;
            }

            .nav-item.active>.nav-link::after {
                left: 1rem;
                right: 1rem;
                bottom: 0.5rem;
            }

            .mega-panel {
                position: static;
                width: 100%;
                transform: none;
                opacity: 1;
                visibility: visible;
                box-shadow: none;
                border-left: none;
                border-right: none;
                border-radius: 0;
                padding: 1rem 0 0.5rem 0.5rem;
                margin-top: 0.25rem;
                display: none;
            }

            .nav-item:hover .mega-panel,
            .nav-item:focus-within .mega-panel {
                transform: none;
            }

            .nav-item.open .mega-panel {
                display: block;
            }

            .header-cta {
                display: none;
            }

            .menu-close {
                position: absolute;
                top: 1rem;
                right: 1rem;
                width: 44px;
                height: 44px;
                border-radius: 0.5rem;
                display: inline-flex;
                align-items: center;
                justify-content: center;
                font-size: 1.1rem;
                color: var(--color-text);
                background: #F6F9FC;
            }

            .menu-close:hover {
                background: #EAF2FA;
            }
        }

        @media (min-width: 1024px) {
            .menu-close {
                display: none;
            }
        }

        @media (max-width: 640px) {
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

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

            .core-row {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }

            .core-arrow {
                display: none;
            }

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

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

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

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