/* roulang page: index */
:root {
            --primary: #4A6785;
            --primary-dark: #3A526D;
            --navy: #253545;
            --navy-light: #2F4052;
            --gold: #B8935D;
            --gold-deep: #8A6B3C;
            --gold-light: rgba(184, 147, 93, 0.12);
            --bg: #F6F7F9;
            --card: #FFFFFF;
            --text: #2C3641;
            --text-light: #6B7A89;
            --text-mute: #A0ABB7;
            --border: #E4E8EC;
            --radius: 10px;
            --radius-sm: 6px;
            --shadow-sm: 0 2px 8px rgba(37, 53, 69, 0.06);
            --shadow-hover: 0 6px 20px rgba(37, 53, 69, 0.1);
            --shadow-btn: 0 2px 6px rgba(37, 53, 69, 0.2);
            --container: 1200px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            --font-serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--navy);
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-pad {
            padding: 80px 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 2px;
            color: var(--gold-deep);
            text-transform: uppercase;
            margin-bottom: 14px;
            background: var(--gold-light);
            padding: 4px 14px;
            border-radius: 999px;
        }
        .section-title {
            font-size: 30px;
            line-height: 1.4;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 16px;
        }
        .section-sub {
            font-size: 16px;
            color: var(--text-light);
            max-width: 760px;
            line-height: 1.8;
        }
        .text-center {
            text-align: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 40px;
            padding: 0 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: all .25s ease;
            border: 1px solid transparent;
            line-height: 1;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(37, 53, 69, .25);
        }
        .btn-outline {
            background: #fff;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            border-color: var(--gold);
            color: var(--gold);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .btn-lg {
            height: 48px;
            padding: 0 36px;
            font-size: 16px;
        }
        .btn-sm {
            height: 36px;
            padding: 0 18px;
            font-size: 14px;
        }
        .btn-gold {
            background: var(--gold);
            color: #fff;
            border-color: var(--gold);
        }
        .btn-gold:hover {
            background: var(--gold-deep);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, .95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
            gap: 20px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            border-radius: 8px;
            color: #fff;
            font-size: 18px;
            font-weight: 600;
        }
        .brand-text {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            letter-spacing: .5px;
            line-height: 1.2;
        }
        .main-nav {
            display: flex;
            align-items: center;
            flex: 1;
            justify-content: center;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-item {
            position: relative;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: all .2s ease;
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(74, 103, 133, .08);
        }
        .nav-item.active .nav-link {
            color: var(--primary);
        }
        .nav-item.active .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--gold);
            border-radius: 2px;
        }
        .nav-link .fa-chevron-down {
            font-size: 11px;
            color: var(--text-mute);
            transition: transform .2s ease;
        }
        .nav-item:hover .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 1px solid var(--border);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text);
            transition: all .2s;
        }
        .menu-toggle:hover {
            background: var(--bg);
            color: var(--primary);
        }

        /* Mega Menu */
        .mega-wrap {
            position: relative;
        }
        .mega-panel {
            position: absolute;
            top: calc(100% + 8px);
            left: 50%;
            transform: translateX(-50%) translateY(4px);
            width: 720px;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: 0 10px 30px rgba(37, 53, 69, .12);
            display: flex;
            opacity: 0;
            visibility: hidden;
            transition: all .2s ease;
            padding: 24px;
            gap: 24px;
            z-index: 1001;
        }
        .mega-wrap.open .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }
        .mega-left {
            flex: 0 0 260px;
            border-right: 1px solid var(--border);
            padding-right: 20px;
        }
        .mega-left-title {
            font-size: 12px;
            font-weight: 600;
            color: var(--text-mute);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }
        .mega-left-list {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mega-left-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text);
            transition: all .2s;
            font-weight: 400;
        }
        .mega-left-list a:hover {
            background: rgba(74, 103, 133, .06);
            color: var(--primary);
        }
        .mega-left-list a .fa-arrow-right {
            font-size: 11px;
            color: var(--text-mute);
            transition: color .2s;
        }
        .mega-left-list a:hover .fa-arrow-right {
            color: var(--gold);
        }
        .mega-right {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .mega-card {
            display: flex;
            gap: 12px;
            padding: 12px;
            border: 1px solid transparent;
            border-radius: var(--radius);
            transition: all .2s;
            background: var(--bg);
        }
        .mega-card:hover {
            border-color: var(--gold);
            background: #fff;
            box-shadow: var(--shadow-sm);
        }
        .mega-card img {
            width: 100px;
            height: 70px;
            object-fit: cover;
            border-radius: 6px;
            flex-shrink: 0;
        }
        .mega-card-body .tag {
            font-size: 11px;
            padding: 2px 8px;
            border-radius: 999px;
            background: rgba(74, 103, 133, .1);
            color: var(--primary);
            font-weight: 500;
            display: inline-block;
            margin-bottom: 6px;
        }
        .mega-card-body h5 {
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            line-height: 1.4;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 180px;
        }
        .mega-card-body h5:hover {
            color: var(--primary);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            padding: 96px 0 88px;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(246, 247, 249, .82);
        }
        .hero-inner {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 60px;
        }
        .hero-copy {
            flex: 1 1 55%;
        }
        .hero-title {
            font-family: var(--font-serif);
            font-size: 42px;
            line-height: 1.4;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 20px;
            letter-spacing: 1px;
        }
        .hero-title .gold-text {
            color: var(--gold);
        }
        .hero-subtitle {
            font-size: 17px;
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 600px;
        }
        .hero-cta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }
        .hero-trust {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }
        .trust-item {
            display: flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            border-radius: 999px;
            padding: 10px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .trust-item .num {
            font-size: 22px;
            font-weight: 600;
            color: var(--primary);
            line-height: 1;
        }
        .trust-item .label {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.2;
        }
        .hero-media {
            flex: 1 1 45%;
            display: flex;
            justify-content: flex-end;
        }
        .hero-media img {
            border-radius: var(--radius);
            box-shadow: 0 12px 40px rgba(37, 53, 69, .15);
            aspect-ratio: 4/3;
            object-fit: cover;
        }

        /* ===== Value Section ===== */
        .value-section {
            padding: 80px 0;
        }
        .value-grid {
            display: flex;
            align-items: center;
            gap: 60px;
        }
        .value-text {
            flex: 0 0 42%;
        }
        .value-text p {
            color: var(--text-light);
            line-height: 1.9;
            margin-bottom: 16px;
        }
        .value-card {
            flex: 1;
            background: var(--card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            position: relative;
        }
        .value-card img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        .value-card-body {
            padding: 24px;
            border-top: 3px solid var(--gold);
        }
        .value-card-body h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
        }
        .value-card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== Feature Section ===== */
        .feature-section {
            padding: 80px 0;
            background: var(--card);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .feature-grid {
            margin-top: 40px;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            max-width: 900px;
        }
        .feature-grid .feature-card:nth-child(3) {
            transform: translateX(-80px);
        }
        .feature-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 28px;
            border: 1px solid var(--border);
            position: relative;
            transition: all .3s ease;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--gold);
            transform: scaleX(0);
            transition: transform .3s ease;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .feature-card:hover::before {
            transform: scaleX(1);
        }
        .feature-card:hover .feature-icon {
            color: var(--primary);
        }
        .feature-icon {
            font-size: 32px;
            color: var(--text-mute);
            margin-bottom: 16px;
            transition: color .3s;
        }
        .feature-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
        }
        .feature-desc {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .feature-link {
            font-size: 14px;
            color: var(--primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap .2s;
        }
        .feature-link:hover {
            gap: 10px;
            color: var(--navy);
        }

        /* ===== Scenario Section ===== */
        .scenario-section {
            padding: 80px 0;
            background: var(--navy);
            color: #fff;
        }
        .scenario-section .section-label {
            background: rgba(184, 147, 93, .2);
            color: var(--gold);
        }
        .scenario-section .section-title {
            color: #fff;
        }
        .scenario-section .section-sub {
            color: #B7C3CE;
        }
        .scenario-item {
            display: flex;
            align-items: center;
            gap: 60px;
            margin-top: 60px;
        }
        .scenario-item:nth-child(even) {
            flex-direction: row-reverse;
        }
        .scenario-media {
            flex: 1 1 50%;
        }
        .scenario-media img {
            border-radius: var(--radius);
            aspect-ratio: 16/10;
            object-fit: cover;
            box-shadow: 0 12px 40px rgba(0, 0, 0, .3);
        }
        .scenario-body {
            flex: 1 1 50%;
        }
        .scenario-num {
            font-size: 48px;
            font-weight: 600;
            color: var(--gold);
            line-height: 1;
            margin-bottom: 12px;
            font-family: var(--font-serif);
        }
        .scenario-title {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 12px;
            color: #fff;
        }
        .scenario-desc {
            font-size: 15px;
            color: #B7C3CE;
            line-height: 1.8;
            max-width: 440px;
        }

        /* ===== Case Section ===== */
        .case-section {
            padding: 80px 0;
        }
        .case-layout {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 24px;
            margin-top: 40px;
            align-items: start;
        }
        .case-main {
            background: var(--card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all .3s;
        }
        .case-main:hover {
            box-shadow: var(--shadow-hover);
        }
        .case-main img {
            width: 100%;
            aspect-ratio: 16/7;
            object-fit: cover;
        }
        .case-main-body {
            padding: 24px;
        }
        .case-main-body h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .case-main-body p {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .case-data {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .case-data .badge {
            background: var(--gold-light);
            color: var(--gold-deep);
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
        }
        .case-side {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .case-card {
            background: var(--card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: all .3s;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .case-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .case-card img {
            width: 100%;
            aspect-ratio: 16/8;
            object-fit: cover;
            border-radius: var(--radius-sm);
        }
        .case-card h4 {
            font-size: 16px;
            font-weight: 500;
            line-height: 1.5;
        }
        .case-card .badge {
            align-self: flex-start;
        }

        /* ===== Pricing Section ===== */
        .pricing-section {
            padding: 80px 0;
            background: var(--card);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 48px;
            align-items: center;
        }
        .pricing-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: all .3s;
            position: relative;
        }
        .pricing-card:hover {
            box-shadow: var(--shadow-hover);
        }
        .pricing-card.featured {
            background: #fff;
            border-color: var(--gold);
            box-shadow: 0 8px 30px rgba(184, 147, 93, .15);
            transform: scale(1.05);
            z-index: 2;
        }
        .pricing-badge {
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--gold);
            color: #fff;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 999px;
        }
        .pricing-plan {
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .pricing-price {
            font-size: 36px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .pricing-price span {
            font-size: 16px;
            font-weight: 400;
            color: var(--text-light);
            margin-left: 4px;
        }
        .pricing-desc {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 24px;
            line-height: 1.6;
        }
        .pricing-list {
            margin-bottom: 28px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .pricing-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            color: var(--text);
            line-height: 1.5;
        }
        .pricing-list .fa-check {
            color: var(--gold);
            font-size: 13px;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .pricing-btn {
            width: 100%;
        }

        /* ===== News / CMS Section ===== */
        .news-section {
            padding: 80px 0;
        }
        .news-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 40px;
        }
        .news-grid {
            display: flex;
            gap: 24px;
        }
        .news-card {
            flex: 1;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all .3s;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .news-card-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 14px;
        }
        .tag {
            display: inline-block;
            background: rgba(74, 103, 133, .1);
            color: var(--primary);
            font-size: 11px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 999px;
        }
        .tag-gold {
            background: var(--gold-light);
            color: var(--gold-deep);
        }
        .news-date {
            font-size: 13px;
            color: var(--text-mute);
        }
        .news-card h4 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 8px;
            color: var(--text);
        }
        .news-card h4 a:hover {
            color: var(--primary);
        }
        .news-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-load-more {
            text-align: center;
            margin-top: 40px;
        }
        .news-empty {
            background: var(--card);
            border: 1px dashed var(--border);
            border-radius: var(--radius);
            padding: 60px 24px;
            text-align: center;
            color: var(--text-light);
            font-size: 15px;
        }
        .news-empty .fa-icon {
            font-size: 40px;
            color: var(--text-mute);
            margin-bottom: 12px;
            display: block;
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: 80px 0;
            background: var(--card);
            border-top: 1px solid var(--border);
        }
        .faq-layout {
            display: grid;
            grid-template-columns: 4fr 8fr;
            gap: 60px;
            margin-top: 48px;
        }
        .faq-side {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .faq-side .section-title {
            font-size: 26px;
            margin-bottom: 0;
        }
        .faq-contact-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
        }
        .faq-contact-card h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .faq-contact-card p {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 8px;
            line-height: 1.6;
        }
        .faq-contact-card .btn {
            margin-top: 12px;
            width: 100%;
        }
        .faq-main {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            background: var(--bg);
            overflow: hidden;
            transition: all .3s;
        }
        .faq-item.active {
            box-shadow: var(--shadow-sm);
            background: #fff;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            cursor: pointer;
            transition: color .2s;
            width: 100%;
            text-align: left;
            background: transparent;
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            font-size: 16px;
            color: var(--primary);
            transition: transform .3s;
            flex-shrink: 0;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            padding: 0 24px;
            overflow: hidden;
            transition: all .3s ease;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-bottom: 20px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 80px 0;
        }
        .cta-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 60px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }
        .cta-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--gold), var(--primary));
        }
        .cta-card h2 {
            font-size: 32px;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .cta-card p {
            font-size: 16px;
            color: var(--text-light);
            margin-bottom: 28px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--navy);
            color: #B7C3CE;
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-brand .brand {
            margin-bottom: 16px;
        }
        .footer-brand .brand-icon {
            background: var(--gold);
            color: var(--navy);
        }
        .footer-brand .brand-text {
            color: #fff;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #B7C3CE;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: #B7C3CE;
            transition: color .2s;
        }
        .footer-col ul a:hover {
            color: var(--gold);
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 14px;
            color: #B7C3CE;
        }
        .footer-contact div {
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }
        .footer-contact .fa-solid {
            color: var(--gold);
            margin-top: 4px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #B7C3CE;
            font-size: 15px;
            transition: all .2s;
        }
        .footer-social a:hover {
            background: var(--gold);
            border-color: var(--gold);
            color: var(--navy);
        }
        .footer-copy {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: #8A9BA8;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 10px 30px rgba(37, 53, 69, .1);
                flex-direction: column;
                padding: 16px;
                z-index: 999;
            }
            .main-nav.open {
                display: flex;
            }
            .nav-list {
                flex-direction: column;
                align-items: stretch;
                width: 100%;
                gap: 4px;
            }
            .nav-item.active .nav-link::after {
                display: none;
            }
            .nav-item.active .nav-link {
                background: rgba(74, 103, 133, .08);
            }
            .mega-wrap {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .hero-inner {
                flex-direction: column;
                gap: 40px;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-media {
                justify-content: center;
            }
            .value-grid {
                flex-direction: column;
                gap: 40px;
            }
            .feature-grid {
                grid-template-columns: 1fr 1fr;
            }
            .feature-grid .feature-card:nth-child(3) {
                transform: none;
            }
            .scenario-item,
            .scenario-item:nth-child(even) {
                flex-direction: column;
                gap: 30px;
            }
            .case-layout {
                grid-template-columns: 1fr;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
                max-width: 460px;
                margin-left: auto;
                margin-right: auto;
            }
            .pricing-card.featured {
                transform: none;
            }
            .news-grid {
                flex-wrap: wrap;
            }
            .news-card {
                flex: 0 0 calc(50% - 12px);
            }
            .faq-layout {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 640px) {
            .section-pad {
                padding: 56px 0;
            }
            .container {
                padding: 0 16px;
            }
            .header-inner {
                height: 64px;
                padding: 0 16px;
            }
            .brand-text {
                font-size: 16px;
            }
            .header-right .btn {
                display: none;
            }
            .hero {
                padding: 56px 0;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-cta {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-cta .btn {
                width: 100%;
            }
            .hero-trust {
                gap: 12px;
            }
            .trust-item {
                padding: 8px 14px;
            }
            .trust-item .num {
                font-size: 18px;
            }
            .section-title {
                font-size: 22px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .scenario-num {
                font-size: 36px;
            }
            .scenario-title {
                font-size: 20px;
            }
            .case-main-body h3 {
                font-size: 18px;
            }
            .news-grid {
                flex-direction: column;
            }
            .news-card {
                flex: 1 1 100%;
            }
            .faq-question {
                font-size: 15px;
                padding: 16px;
            }
            .cta-card {
                padding: 40px 20px;
            }
            .cta-card h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
    --primary: #4A6785;
    --primary-dark: #3A526D;
    --secondary: #253545;
    --accent: #B8935D;
    --accent-dark: #8A6B3C;
    --bg: #F6F7F9;
    --card-bg: #FFFFFF;
    --text: #2C3641;
    --text-light: #6B7A89;
    --text-faint: #A0ABB7;
    --border: #E4E8EC;
    --input-bg: #FAFBFC;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow-sm: 0 2px 8px rgba(37,53,69,0.06);
    --shadow-md: 0 6px 20px rgba(37,53,69,0.10);
    --font-main: "PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    --font-serif: "Noto Serif SC","Songti SC",serif;
}

/* ===== Reset / Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
    font-family:var(--font-main);
    font-size:16px;
    line-height:1.8;
    color:var(--text);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .25s ease}
ul,ol{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

/* ===== 容器 ===== */
.container{
    max-width:1200px;
    margin:0 auto;
    padding-left:24px;
    padding-right:24px;
}
.container.narrow{max-width:860px}
.container.medium{max-width:1020px}

/* ===== 按钮 ===== */
.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:40px;
    padding:0 24px;
    border-radius:var(--radius-sm);
    font-size:15px;
    font-weight:500;
    letter-spacing:.02em;
    transition:all .25s ease;
    white-space:nowrap;
    border:1px solid transparent;
}
.btn-primary{
    background:var(--primary);
    color:#fff;
    box-shadow:0 2px 6px rgba(37,53,69,.2);
}
.btn-primary:hover{
    background:var(--primary-dark);
    transform:translateY(-2px);
    box-shadow:0 4px 12px rgba(37,53,69,.25);
    color:#fff;
}
.btn-outline{
    background:#fff;
    border-color:var(--primary);
    color:var(--primary);
}
.btn-outline:hover{
    border-color:var(--accent);
    color:var(--accent);
    transform:translateY(-2px);
}
.btn-accent{
    background:var(--accent);
    color:#fff;
    box-shadow:0 2px 6px rgba(184,147,93,.3);
}
.btn-accent:hover{
    background:var(--accent-dark);
    transform:translateY(-2px);
    color:#fff;
}
.btn-lg{height:48px;padding:0 36px;font-size:16px}
.btn-sm{height:36px;padding:0 16px;font-size:14px}

/* ===== 徽章 ===== */
.badge{
    display:inline-flex;
    align-items:center;
    height:24px;
    padding:0 12px;
    border-radius:999px;
    background:rgba(74,103,133,.10);
    color:var(--primary);
    font-size:11px;
    font-weight:500;
    letter-spacing:.04em;
    line-height:1;
}
.badge-gold{
    background:rgba(184,147,93,.12);
    color:var(--accent-dark);
}

/* ===== Header ===== */
.site-header{
    position:sticky;
    top:0;
    z-index:100;
    background:rgba(255,255,255,.95);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--border);
    transition:box-shadow .3s ease;
}
.site-header.scrolled{box-shadow:0 2px 12px rgba(37,53,69,.08)}
.header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:72px;
    gap:16px;
}
.brand{
    display:flex;
    align-items:center;
    gap:10px;
    flex-shrink:0;
}
.brand-icon{
    display:flex;
    align-items:center;
    justify-content:center;
    width:38px;
    height:38px;
    border-radius:10px;
    background:rgba(74,103,133,.08);
    color:var(--primary);
    font-size:18px;
    transition:background .3s ease;
}
.brand:hover .brand-icon{background:rgba(74,103,133,.16)}
.brand-text{
    font-family:var(--font-serif);
    font-size:20px;
    font-weight:600;
    color:var(--primary-dark);
    letter-spacing:.04em;
    white-space:nowrap;
}

/* ===== 主导航 ===== */
.main-nav{margin-left:auto}
.nav-list{
    display:flex;
    align-items:center;
    gap:8px;
}
.nav-item{
    position:relative;
    border-radius:6px;
}
.nav-link{
    display:inline-flex;
    align-items:center;
    height:40px;
    padding:0 18px;
    font-size:15px;
    font-weight:500;
    color:var(--text);
    border-radius:6px;
    transition:all .25s ease;
    position:relative;
}
.nav-link:hover{
    color:var(--primary);
    background:rgba(74,103,133,.08);
}
.nav-item.active .nav-link{
    color:var(--primary);
    font-weight:500;
}
.nav-item.active .nav-link::after{
    content:'';
    position:absolute;
    left:18px;
    right:18px;
    bottom:-1px;
    height:2px;
    background:var(--accent);
    border-radius:999px;
}

/* ===== Mega Menu ===== */
.has-mega .mega-panel{
    position:absolute;
    top:calc(100% + 10px);
    left:50%;
    transform:translateX(-50%) translateY(8px);
    width:720px;
    background:#fff;
    border:1px solid var(--border);
    border-radius:var(--radius);
    box-shadow:0 10px 30px rgba(37,53,69,.12);
    opacity:0;
    visibility:hidden;
    transition:all .2s ease;
    z-index:50;
    padding:24px;
}
.has-mega:hover .mega-panel,
.has-mega.mega-open .mega-panel{
    opacity:1;
    visibility:visible;
    transform:translateX(-50%) translateY(0);
}
.has-mega .mega-panel-inner{
    display:grid;
    grid-template-columns:1fr 1.2fr;
    gap:24px;
}
.mega-col h4{
    font-size:13px;
    font-weight:600;
    color:var(--text-faint);
    letter-spacing:.06em;
    text-transform:uppercase;
    margin-bottom:14px;
    padding-bottom:8px;
    border-bottom:1px solid var(--border);
}
.mega-cats li a{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:38px;
    padding:0 12px;
    border-radius:6px;
    font-size:14px;
    color:var(--text);
    transition:all .2s ease;
}
.mega-cats li a i{
    font-size:12px;
    color:var(--text-faint);
    transition:color .2s ease;
}
.mega-cats li a:hover{
    background:rgba(74,103,133,.06);
    color:var(--primary);
}
.mega-cats li a:hover i{color:var(--accent)}
.mega-feeds{
    display:flex;
    flex-direction:column;
    gap:12px;
}
.mega-card{
    display:flex;
    gap:12px;
    align-items:center;
    padding:12px;
    border:1px solid transparent;
    border-radius:8px;
    transition:all .25s ease;
}
.mega-card:hover{
    border-color:var(--accent);
    box-shadow:var(--shadow-sm);
    background:#FAFBFC;
}
.mega-card-img{
    width:88px;
    height:56px;
    border-radius:6px;
    background-size:cover;
    background-position:center;
    background-color:#E4E8EC;
    flex-shrink:0;
}
.mega-card-info p{
    font-size:14px;
    font-weight:500;
    color:var(--text);
    line-height:1.5;
    margin-top:4px;
    white-space:nowrap;
    overflow:hidden;
    text-overflow:ellipsis;
}
.mega-card-info p:hover{color:var(--primary)}

/* ===== Header 行动区 ===== */
.header-actions{
    display:flex;
    align-items:center;
    gap:10px;
    flex-shrink:0;
}
.menu-toggle{
    display:none;
    flex-direction:column;
    justify-content:center;
    gap:5px;
    width:40px;
    height:40px;
    padding:10px;
    border-radius:6px;
    transition:background .2s ease;
}
.menu-toggle:hover{background:rgba(74,103,133,.08)}
.menu-toggle span{
    display:block;
    height:2px;
    width:20px;
    background:var(--primary-dark);
    border-radius:999px;
    transition:all .3s ease;
}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== 面包屑 ===== */
.breadcrumb-wrap{
    background:#fff;
    border-bottom:1px solid var(--border);
    padding:14px 0;
}
.breadcrumb{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:8px;
    font-size:13px;
    color:var(--text-light);
}
.breadcrumb a{color:var(--text-light);transition:color .2s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{
    font-size:11px;
    color:var(--text-faint);
    display:inline-flex;
}
.breadcrumb .current{
    color:var(--text);
    font-weight:500;
    max-width:360px;
    white-space:nowrap;
    overflow:hidden;
    text-overflow:ellipsis;
}

/* ===== 文章头部 ===== */
.article-header{
    padding:48px 0 24px;
    background:linear-gradient(180deg,#F6F7F9 0%,#fff 100%);
}
.article-header-inner{
    text-align:left;
    max-width:860px;
}
.article-header h1{
    font-family:var(--font-serif);
    font-size:34px;
    font-weight:600;
    line-height:1.4;
    color:var(--text);
    margin-bottom:18px;
    letter-spacing:.02em;
}
.article-meta{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:10px;
    font-size:14px;
    color:var(--text-light);
}
.article-meta .meta-item{
    display:inline-flex;
    align-items:center;
    gap:6px;
}
.article-meta .meta-item i{color:var(--accent)}
.article-meta .meta-dot{color:var(--text-faint)}
.article-meta .meta-item .fa-regular,.article-meta .meta-item .fa-solid{width:14px;text-align:center}

/* ===== 文章正文 ===== */
.article-main{padding:32px 0 64px}
.article-body{
    background:#fff;
    border:1px solid var(--border);
    border-radius:var(--radius);
    padding:48px 56px;
    box-shadow:var(--shadow-sm);
    font-size:16px;
    line-height:1.8;
    color:var(--text);
}
.article-body > *:first-child{margin-top:0}
.article-body h2{
    font-family:var(--font-serif);
    font-size:26px;
    font-weight:600;
    line-height:1.5;
    color:var(--text);
    margin-top:48px;
    margin-bottom:16px;
    padding-bottom:10px;
    border-bottom:2px solid rgba(184,147,93,.25);
}
.article-body h3{
    font-size:20px;
    font-weight:600;
    line-height:1.5;
    color:var(--text);
    margin-top:40px;
    margin-bottom:12px;
}
.article-body h4{
    font-size:17px;
    font-weight:600;
    color:var(--text);
    margin-top:28px;
    margin-bottom:8px;
}
.article-body p{
    margin-bottom:8px;
    line-height:1.8;
}
.article-body a{
    color:var(--primary);
    text-decoration:underline;
    text-decoration-color:rgba(74,103,133,.3);
    text-underline-offset:3px;
    transition:all .2s ease;
}
.article-body a:hover{
    color:var(--secondary);
    text-decoration-color:var(--secondary);
}
.article-body ul,.article-body ol{
    margin:16px 0;
    padding-left:24px;
}
.article-body ul li{
    position:relative;
    padding-left:6px;
    margin-bottom:8px;
    line-height:1.7;
}
.article-body ul li::before{
    content:'';
    position:absolute;
    left:-14px;
    top:12px;
    width:6px;
    height:6px;
    border-radius:999px;
    background:var(--accent);
}
.article-body ol{
    list-style:decimal;
}
.article-body ol li{
    margin-bottom:8px;
    line-height:1.7;
    padding-left:4px;
}
.article-body img{
    max-width:100%;
    border-radius:8px;
    border:1px solid var(--border);
    margin:24px auto;
}
.article-body figure{
    margin:24px 0;
}
.article-body figcaption{
    text-align:center;
    font-size:13px;
    color:var(--text-light);
    margin-top:8px;
}
.article-body blockquote{
    position:relative;
    margin:24px 0;
    padding:20px 24px;
    background:#F8F9FA;
    border-left:3px solid var(--accent);
    border-radius:0 8px 8px 0;
    font-family:var(--font-serif);
    font-size:16px;
    color:var(--text-light);
    line-height:1.8;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body hr{
    border:none;
    border-top:1px solid var(--border);
    margin:32px 0;
}
.article-body table{
    width:100%;
    border-collapse:collapse;
    margin:24px 0;
    font-size:14px;
}
.article-body table th{
    background:rgba(74,103,133,.06);
    font-weight:500;
    text-align:left;
    padding:12px;
    border:1px solid var(--border);
}
.article-body table td{
    padding:12px;
    border:1px solid var(--border);
}

/* ===== 文章未找到 ===== */
.article-not-found{
    text-align:center;
    padding:60px 30px;
    background:#fff;
    border:1px solid var(--border);
    border-radius:var(--radius);
    box-shadow:var(--shadow-sm);
}
.article-not-found i{
    font-size:48px;
    color:var(--text-faint);
    margin-bottom:16px;
}
.article-not-found p{
    font-size:16px;
    color:var(--text-light);
    margin-bottom:24px;
}

/* ===== 分享栏 ===== */
.share-bar{
    max-width:860px;
    margin:24px auto 0;
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:16px 24px;
    background:#fff;
    border:1px solid var(--border);
    border-radius:var(--radius);
    box-shadow:var(--shadow-sm);
}
.share-bar .share-label{
    font-size:14px;
    color:var(--text-light);
    font-weight:500;
}
.share-icons{
    display:flex;
    gap:10px;
}
.share-icons a{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:36px;
    height:36px;
    border-radius:50%;
    background:var(--bg);
    color:var(--primary);
    font-size:15px;
    transition:all .25s ease;
    border:1px solid transparent;
}
.share-icons a:hover{
    background:var(--primary);
    color:#fff;
    border-color:var(--primary);
    transform:translateY(-2px);
    box-shadow:var(--shadow-sm);
}

/* ===== 相关推荐 ===== */
.rel-posts{
    padding:64px 0 48px;
    border-top:1px solid var(--border);
    background:var(--bg);
}
.rel-head{
    text-align:center;
    margin-bottom:40px;
}
.rel-head .section-title{
    font-family:var(--font-serif);
    font-size:30px;
    font-weight:600;
    color:var(--text);
    margin-bottom:8px;
}
.rel-head .section-sub{
    font-size:15px;
    color:var(--text-light);
}
.rel-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
}
.rel-card{
    display:block;
    background:#fff;
    border:1px solid var(--border);
    border-radius:var(--radius);
    padding:24px;
    transition:all .3s ease;
    box-shadow:var(--shadow-sm);
}
.rel-card:hover{
    transform:translateY(-4px);
    box-shadow:var(--shadow-md);
    border-color:rgba(184,147,93,.4);
}
.rel-top{
    display:flex;
    align-items:center;
    justify-content:space-between;
    margin-bottom:14px;
}
.rel-date{
    font-size:12px;
    color:var(--text-faint);
}
.rel-card h3{
    font-size:17px;
    font-weight:600;
    color:var(--text);
    line-height:1.5;
    margin-bottom:10px;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
    transition:color .2s ease;
}
.rel-card:hover h3{color:var(--primary)}
.rel-card .rel-desc{
    font-size:14px;
    color:var(--text-light);
    line-height:1.7;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
}
.rel-card .rel-more{
    display:inline-flex;
    align-items:center;
    gap:6px;
    margin-top:14px;
    font-size:13px;
    font-weight:500;
    color:var(--primary);
    transition:gap .2s ease;
}
.rel-card:hover .rel-more{gap:10px;color:var(--accent)}

/* ===== 返回列表 ===== */
.article-back{
    display:flex;
    justify-content:center;
    margin-top:40px;
}

/* ===== Footer ===== */
.site-footer{
    background:var(--secondary);
    color:#B7C3CE;
    padding-top:64px;
}
.footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1.2fr;
    gap:40px;
    padding-bottom:48px;
    border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand p{
    font-size:14px;
    line-height:1.8;
    color:#8FA1B3;
    margin-top:14px;
    margin-bottom:20px;
    max-width:300px;
}
.footer-brand .brand{
    color:#fff;
}
.footer-brand .brand-icon{
    background:rgba(255,255,255,.08);
    color:var(--accent);
}
.footer-brand .brand-text{
    color:#fff;
}
.footer-social{
    display:flex;
    gap:10px;
}
.footer-social a{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:36px;
    height:36px;
    border-radius:50%;
    background:rgba(255,255,255,.06);
    color:#B7C3CE;
    font-size:14px;
    transition:all .25s ease;
}
.footer-social a:hover{
    background:var(--accent);
    color:#fff;
    transform:translateY(-2px);
}
.footer-col h4{
    font-size:15px;
    font-weight:500;
    color:#fff;
    margin-bottom:18px;
    letter-spacing:.03em;
}
.footer-col ul li{
    margin-bottom:8px;
}
.footer-col ul li a{
    font-size:14px;
    color:#8FA1B3;
    transition:color .2s ease,padding-left .2s ease;
    display:inline-block;
}
.footer-col ul li a:hover{
    color:var(--accent);
    padding-left:4px;
}
.footer-contact div{
    display:flex;
    align-items:flex-start;
    gap:10px;
    font-size:14px;
    color:#8FA1B3;
    margin-bottom:12px;
    line-height:1.6;
}
.footer-contact i{
    color:var(--accent);
    width:16px;
    text-align:center;
    margin-top:3px;
    flex-shrink:0;
}
.footer-copy{
    padding:24px 0;
    text-align:center;
    font-size:13px;
    color:#6B7A89;
    letter-spacing:.03em;
}

/* ===== 响应式 ===== */
@media (max-width:1024px){
    .container{padding-left:20px;padding-right:20px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .has-mega .mega-panel{width:620px}
}

@media (max-width:768px){
    .site-header .header-actions .btn{display:none}
    .menu-toggle{display:flex}
    .main-nav{
        position:fixed;
        top:72px;
        left:0;
        right:0;
        background:#fff;
        border-top:1px solid var(--border);
        box-shadow:0 8px 24px rgba(37,53,69,.10);
        max-height:0;
        overflow:hidden;
        transition:max-height .3s ease;
        z-index:99;
    }
    .main-nav.nav-open{
        max-height:calc(100vh - 72px);
        overflow-y:auto;
    }
    .nav-list{
        flex-direction:column;
        align-items:stretch;
        padding:16px;
        gap:4px;
    }
    .nav-link{
        justify-content:flex-start;
        width:100%;
        height:48px;
        padding:0 16px;
        font-size:16px;
    }
    .nav-item.active .nav-link::after{
        left:16px;
        right:auto;
        width:32px;
        bottom:6px;
    }
    .has-mega .mega-panel{
        position:static;
        width:auto;
        transform:none;
        opacity:1;
        visibility:visible;
        box-shadow:none;
        border:none;
        border-left:2px solid var(--border);
        border-radius:0;
        padding:0 0 0 16px;
        margin:8px 0 8px 16px;
        display:none;
    }
    .has-mega.mega-open .mega-panel{
        display:block;
    }
    .has-mega .mega-panel-inner{
        grid-template-columns:1fr;
        gap:16px;
    }
    .article-header{padding:32px 0 16px}
    .article-header h1{font-size:26px}
    .article-body{padding:28px 20px;border-radius:8px}
    .article-body h2{font-size:22px;margin-top:36px}
    .article-body h3{font-size:18px;margin-top:30px}
    .rel-grid{grid-template-columns:1fr;gap:16px}
    .share-bar{flex-direction:column;align-items:flex-start;gap:14px}
    .article-back{margin-top:28px}
    .breadcrumb{font-size:12px}
    .breadcrumb .current{max-width:200px}
}

@media (max-width:640px){
    .container{padding-left:16px;padding-right:16px}
    .footer-grid{grid-template-columns:1fr;gap:28px}
    .footer-brand p{max-width:100%}
    .article-meta{font-size:13px}
    .article-meta .meta-dot{display:none}
    .article-meta{flex-wrap:wrap;gap:6px}
    .article-main{padding:24px 0 48px}
    .article-body{padding:24px 16px}
    .rel-posts{padding:48px 0 32px}
    .rel-head .section-title{font-size:24px}
}

@media (max-width:520px){
    .header-inner{height:64px}
    .main-nav{top:64px}
    .brand-text{font-size:18px}
    .brand-icon{width:34px;height:34px;font-size:16px}
    .article-header h1{font-size:23px;line-height:1.5}
    .article-body{font-size:15px}
    .article-body blockquote{padding:16px}
    .article-not-found{padding:40px 20px}
}

/* roulang page: category1 */
:root{
    --primary:#4A6785;
    --primary-dark:#3A526D;
    --navy:#253545;
    --gold:#B8935D;
    --gold-light:rgba(184,147,93,.12);
    --bg:#F6F7F9;
    --white:#fff;
    --text:#2C3641;
    --muted:#6B7A89;
    --placeholder:#A0ABB7;
    --border:#E4E8EC;
    --radius:10px;
    --radius-sm:6px;
    --shadow:0 2px 8px rgba(37,53,69,.06);
    --shadow-lg:0 6px 20px rgba(37,53,69,.10);
    --shadow-btn:0 2px 6px rgba(37,53,69,.2);
    --space:80px;
}
*,*::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;
    color:var(--text);
    background:var(--bg);
    line-height:1.8;
    font-size:16px;
    -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button{font-family:inherit;cursor:pointer;background:none;border:none;color:inherit;}
input,select,textarea{font-family:inherit;font-size:inherit;}
ul,ol{list-style:none;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.row{max-width:none;}
.section{padding:var(--space) 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;gap:16px;margin-bottom:36px;}
.section-head .section-index{
    font-size:14px;color:var(--gold);font-weight:500;letter-spacing:2px;
    display:inline-flex;align-items:center;gap:8px;margin-bottom:8px;
}
.section-head .section-index::before{content:"";width:26px;height:1px;background:var(--gold);}
.section-title{font-size:30px;font-weight:600;line-height:1.4;color:var(--text);}
.section-sub{color:var(--muted);font-size:15px;margin-top:8px;max-width:640px;line-height:1.8;}
.btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 28px;font-size:15px;font-weight:500;border-radius:var(--radius-sm);
    transition:all .2s ease;border:1px solid transparent;white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-btn);}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);color:#fff;box-shadow:0 4px 10px rgba(37,53,69,.25);}
.btn-secondary{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-secondary:hover{border-color:var(--gold);color:var(--gold);transform:translateY(-2px);}
.btn-light{background:var(--gold);color:#fff;}
.btn-light:hover{background:#a67a45;color:#fff;transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 22px;font-size:14px;}
.btn-lg{height:52px;padding:0 40px;font-size:16px;}
.btn-block{width:100%;}
.tag{
    display:inline-flex;align-items:center;height:24px;padding:0 12px;
    font-size:11px;font-weight:500;border-radius:999px;line-height:1;
}
.tag-blue{background:rgba(74,103,133,.1);color:var(--primary);}
.tag-gold{background:var(--gold-light);color:#8A6B3C;}
.tag-light{background:rgba(255,255,255,.15);color:#fff;}
.site-header{
    position:sticky;top:0;z-index:100;background:rgba(255,255,255,.95);
    backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
    border-bottom:1px solid var(--border);transition:box-shadow .2s ease;
}
.site-header:hover{box-shadow:0 4px 20px rgba(37,53,69,.04);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-icon{
    width:38px;height:38px;border-radius:10px;background:var(--navy);color:var(--gold);
    display:inline-flex;align-items:center;justify-content:center;font-size:17px;
}
.brand-text{font-size:20px;font-weight:600;color:var(--navy);letter-spacing:1px;}
.main-nav{display:flex;align-items:center;}
.nav-list{display:flex;align-items:center;gap:4px;}
.nav-item{position:relative;}
.nav-link{
    display:inline-flex;align-items:center;height:72px;padding:0 16px;
    font-size:15px;font-weight:500;color:var(--text);border-bottom:2px solid transparent;
    transition:color .2s ease,background .2s ease;border-radius:0;
}
.nav-item.active .nav-link{color:var(--primary);border-bottom-color:var(--gold);}
.nav-link:hover{color:var(--primary);background:rgba(74,103,133,.08);}
.nav-link:focus{outline:2px solid var(--primary);outline-offset:-2px;border-radius:4px;}
.mega-panel{
    position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(10px);
    width:720px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);
    box-shadow:0 10px 30px rgba(37,53,69,.12);padding:24px;display:grid;
    grid-template-columns:1fr 1fr;gap:28px;opacity:0;visibility:hidden;
    transition:all .2s ease;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:13px;font-weight:600;color:var(--muted);letter-spacing:1px;margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid var(--border);}
.mega-links li a{
    display:flex;align-items:center;justify-content:space-between;height:38px;
    padding:0 12px;border-radius:var(--radius-sm);font-size:14px;color:var(--text);transition:all .2s ease;
}
.mega-links li a i{font-size:12px;color:var(--placeholder);transition:color .2s ease;}
.mega-links li a:hover{background:rgba(74,103,133,.06);color:var(--primary);}
.mega-links li a:hover i{color:var(--gold);}
.mega-col{display:flex;flex-direction:column;gap:12px;}
.mega-card{
    border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;
    background:#fff;transition:border-color .2s ease,box-shadow .2s ease;display:block;
}
.mega-card:hover{border-color:var(--gold);box-shadow:var(--shadow);}
.mega-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--border);}
.mega-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.mega-card:hover .mega-thumb img{transform:scale(1.04);}
.mega-card-body{padding:10px 12px 12px;}
.mega-card-body .tag{margin-bottom:8px;}
.mega-card-title{display:block;font-size:14px;font-weight:500;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:6px;}
.header-actions{display:flex;align-items:center;gap:16px;flex-shrink:0;}
.nav-toggle{display:none;width:42px;height:42px;border-radius:var(--radius-sm);border:1px solid var(--border);background:#fff;align-items:center;justify-content:center;font-size:18px;color:var(--navy);transition:all .2s ease;}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary);}
.hero{
    position:relative;background:linear-gradient(135deg,rgba(255,255,255,.95),rgba(246,247,249,.88)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    padding:70px 0 90px;border-bottom:1px solid var(--border);
    background-color:#eef1f3;
}
.hero .row{display:flex;align-items:center;gap:40px;}
.hero-content{position:relative;z-index:2;}
.hero-badge{
    display:inline-flex;align-items:center;gap:8px;background:var(--gold-light);
    color:#8A6B3C;font-size:13px;font-weight:500;border-radius:999px;padding:6px 16px;margin-bottom:20px;
}
.hero-badge i{font-size:12px;}
.hero h1{font-size:42px;font-weight:600;color:var(--navy);line-height:1.3;margin-bottom:18px;}
.hero h1 span{color:var(--primary);}
.hero p{font-size:17px;color:var(--muted);max-width:540px;line-height:1.9;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.hero-trust{display:flex;flex-wrap:wrap;gap:24px;margin-top:36px;padding-top:28px;border-top:1px solid var(--border);}
.trust-item{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);}
.trust-item i{font-size:28px;color:var(--primary);}
.trust-item b{font-size:20px;color:var(--navy);font-weight:600;display:block;line-height:1.2;}
.hero-media{position:relative;z-index:2;}
.hero-img-wrap{
    border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg);
    border:1px solid var(--border);background:var(--border);position:relative;
}
.hero-img-wrap img{aspect-ratio:4/3;object-fit:cover;width:100%;}
.hero-float-card{
    position:absolute;left:-18px;bottom:26px;background:#fff;border-radius:var(--radius);
    box-shadow:var(--shadow-lg);border:1px solid var(--border);padding:14px 18px;display:flex;gap:12px;align-items:center;
}
.hero-float-card .fc-icon{width:40px;height:40px;border-radius:8px;background:rgba(74,103,133,.1);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px;}
.hero-float-card .fc-text b{display:block;font-size:15px;color:var(--navy);font-weight:600;line-height:1.3;}
.hero-float-card .fc-text span{font-size:12px;color:var(--muted);}
.filter-wrap{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;margin-bottom:32px;box-shadow:var(--shadow);display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;}
.filter-select{
    height:40px;padding:0 36px 0 14px;border:1px solid var(--border);border-radius:var(--radius-sm);
    background:#FAFBFC url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%236B7A89' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 14px center;
    appearance:none;-webkit-appearance:none;font-size:14px;color:var(--text);width:140px;
    transition:border-color .2s ease,box-shadow .2s ease;
}
.filter-select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(74,103,133,.15);outline:none;}
.filter-tabs{display:flex;flex-wrap:wrap;gap:8px;}
.filter-tab{
    height:34px;padding:0 18px;border-radius:999px;background:#fff;border:1px solid var(--border);
    font-size:14px;color:var(--muted);transition:all .2s ease;
}
.filter-tab:hover{color:var(--primary);border-color:var(--primary);}
.filter-tab.active{background:var(--primary);color:#fff;border-color:var(--primary);}
.news-main{display:flex;flex-direction:column;gap:24px;}
.focus-card{
    background:var(--navy);border-radius:var(--radius);overflow:hidden;display:flex;
    min-height:220px;box-shadow:var(--shadow-lg);margin-bottom:28px;
}
.focus-card .focus-body{flex:1;padding:28px 32px;display:flex;flex-direction:column;justify-content:center;gap:12px;}
.focus-card .focus-body .tag{align-self:flex-start;}
.focus-card .focus-body h3{color:#fff;font-size:20px;line-height:1.5;font-weight:600;}
.focus-card .focus-body p{color:#B7C3CE;font-size:14px;line-height:1.8;}
.focus-card .focus-body a{color:var(--gold);font-size:14px;font-weight:500;display:inline-flex;align-items:center;gap:6px;transition:gap .2s ease;}
.focus-card .focus-body a:hover{gap:10px;}
.focus-card .focus-thumb{width:312px;flex-shrink:0;position:relative;}
.focus-card .focus-thumb img{width:100%;height:100%;object-fit:cover;}
.focus-card .focus-thumb::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(37,53,69,.6),transparent 60%);}
.timeline{position:relative;padding-left:0;}
.timeline-item{
    position:relative;display:flex;gap:20px;padding:24px 0;border-bottom:1px solid var(--border);
    transition:background .2s ease;border-radius:var(--radius);
}
.timeline-item:last-child{border-bottom:none;}
.timeline-item:hover{background:rgba(74,103,133,.03);padding-left:12px;padding-right:12px;}
.timeline-item .tl-date{
    flex-shrink:0;width:92px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);
    text-align:center;padding:10px 6px;display:flex;flex-direction:column;justify-content:center;align-self:flex-start;
    box-shadow:var(--shadow);
}
.tl-date b{font-size:20px;color:var(--navy);font-weight:600;line-height:1.3;display:block;}
.tl-date span{font-size:12px;color:var(--muted);}
.timeline-item .tl-thumb{width:168px;flex-shrink:0;border-radius:var(--radius-sm);overflow:hidden;background:var(--border);aspect-ratio:16/9;}
.tl-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.timeline-item:hover .tl-thumb img{transform:scale(1.05);}
.tl-body{flex:1;min-width:0;}
.tl-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px;}
.tl-meta .tl-time{font-size:12px;color:var(--muted);}
.tl-body h3{font-size:17px;font-weight:600;color:var(--navy);line-height:1.5;margin-bottom:8px;transition:color .2s ease;}
.tl-body h3:hover{color:var(--primary);}
.tl-body p{font-size:14px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:10px;}
.tl-link{font-size:14px;color:var(--primary);font-weight:500;display:inline-flex;align-items:center;gap:6px;transition:gap .2s ease;}
.tl-link:hover{gap:10px;color:var(--primary-dark);}
.sidebar-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:24px;}
.side-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;}
.side-card .sc-title{font-size:17px;font-weight:600;color:var(--navy);margin-bottom:16px;display:flex;align-items:center;gap:10px;}
.side-card .sc-title i{color:var(--gold);font-size:16px;}
.hot-list li{border-bottom:1px dashed var(--border);}
.hot-list li:last-child{border-bottom:none;}
.hot-list li a{display:flex;align-items:flex-start;gap:10px;padding:12px 0;font-size:14px;color:var(--text);line-height:1.6;transition:color .2s ease,padding-left .2s ease;}
.hot-list li a::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--gold);margin-top:9px;flex-shrink:0;}
.hot-list li a:hover{color:var(--primary);padding-left:6px;}
.subscribe-card{background:linear-gradient(135deg,#fff,#F6F7F9);}
.subscribe-card p{font-size:13px;color:var(--muted);margin-bottom:18px;line-height:1.7;}
.subscribe-form .form-input{
    width:100%;height:42px;padding:0 14px;border:1px solid var(--border);border-radius:var(--radius-sm);
    background:#FAFBFC;font-size:14px;margin-bottom:12px;transition:border-color .2s ease,box-shadow .2s ease;
}
.subscribe-form .form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(74,103,133,.15);outline:none;}
.subscribe-success{display:none;font-size:14px;color:#3d8b57;text-align:center;padding:10px 0;}
.section-features{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.feature-card{
    background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;
    position:relative;overflow:hidden;transition:all .2s ease;
}
.feature-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--gold);transform:scaleX(0);transition:transform .3s ease;}
.feature-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);}
.feature-card:hover::before{transform:scaleX(1);}
.feature-icon{width:52px;height:52px;border-radius:12px;background:rgba(74,103,133,.1);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:18px;transition:all .2s ease;}
.feature-card:hover .feature-icon{background:var(--primary);color:#fff;}
.feature-card h3{font-size:18px;font-weight:600;color:var(--navy);margin-bottom:10px;}
.feature-card p{font-size:14px;color:var(--muted);line-height:1.8;}
.section-process{background:var(--bg);}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.process-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px 22px;text-align:center;position:relative;transition:all .2s ease;box-shadow:var(--shadow);}
.process-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);border-color:var(--gold);}
.process-num{
    width:38px;height:38px;border-radius:50%;background:var(--navy);color:var(--gold);
    display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:600;margin:0 auto 16px;
}
.process-icon{font-size:28px;color:var(--primary);margin-bottom:14px;}
.process-card h3{font-size:16px;font-weight:600;color:var(--navy);margin-bottom:8px;}
.process-card p{font-size:13px;color:var(--muted);line-height:1.7;}
.section-faq{background:#fff;border-top:1px solid var(--border);}
.faq-wrap{display:flex;gap:36px;align-items:flex-start;}
.faq-left{flex:0 0 340px;}
.faq-left h3{font-size:20px;font-weight:600;color:var(--navy);margin-bottom:12px;}
.faq-left p{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:20px;}
.faq-support{
    background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:20px;display:flex;gap:14px;align-items:center;
}
.faq-support .fs-icon{width:42px;height:42px;border-radius:10px;background:var(--gold-light);color:var(--gold);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0;}
.faq-support b{display:block;font-size:14px;color:var(--navy);}
.faq-support span{font-size:13px;color:var(--muted);}
.faq-right{flex:1;}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px;background:#fff;transition:border-color .2s ease,box-shadow .2s ease;overflow:hidden;}
.faq-item.open{border-color:var(--primary);box-shadow:var(--shadow);}
.faq-question{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding:18px 22px;font-size:16px;font-weight:500;color:var(--navy);text-align:left;transition:background .2s ease;
}
.faq-question:hover{background:rgba(74,103,133,.04);}
.faq-question .faq-icon{font-size:16px;color:var(--primary);transition:transform .3s ease;flex-shrink:0;}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--gold);}
.faq-answer{
    max-height:0;overflow:hidden;transition:max-height .3s ease;
}
.faq-answer p{padding:0 22px 18px;font-size:15px;color:var(--muted);line-height:1.9;}
.faq-item.open .faq-answer{max-height:300px;}
.section-cta{background:linear-gradient(135deg,#EEF1F3,#F6F7F9);}
.cta-card{
    background:#fff;border:1px solid var(--border);border-radius:14px;padding:56px 48px;
    display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
    box-shadow:var(--shadow);position:relative;overflow:hidden;
}
.cta-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,var(--primary),var(--gold));}
.cta-text{flex:1;min-width:280px;}
.cta-text h2{font-size:28px;font-weight:600;color:var(--navy);line-height:1.4;margin-bottom:10px;}
.cta-text p{font-size:15px;color:var(--muted);line-height:1.8;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex-shrink:0;}
.site-footer{background:var(--navy);color:#B7C3CE;padding-top:64px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.08);}
.footer-brand .brand{color:#fff;margin-bottom:16px;display:flex;}
.footer-brand .brand-icon{background:rgba(255,255,255,.1);color:var(--gold);}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.8;color:#8FA0AF;margin-top:16px;max-width:280px;}
.footer-social{display:flex;gap:12px;margin-top:20px;}
.footer-social a{
    width:36px;height:36px;border-radius:8px;border:1px solid rgba(255,255,255,.15);
    display:flex;align-items:center;justify-content:center;color:#B7C3CE;font-size:15px;transition:all .2s ease;
}
.footer-social a:hover{background:var(--gold);border-color:var(--gold);color:#fff;transform:translateY(-2px);}
.footer-col h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:16px;position:relative;padding-bottom:10px;}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:24px;height:2px;background:var(--gold);}
.footer-col ul{display:flex;flex-direction:column;gap:8px;}
.footer-col ul li a{font-size:14px;color:#8FA0AF;transition:color .2s ease,padding-left .2s ease;}
.footer-col ul li a:hover{color:var(--gold);padding-left:4px;}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:#8FA0AF;}
.footer-contact i{color:var(--gold);width:20px;text-align:center;margin-right:4px;}
.footer-copy{text-align:center;font-size:13px;color:#6F8395;padding:24px 0;line-height:1.8;}
.footer-copy a{color:#8FA0AF;}
.footer-copy a:hover{color:var(--gold);}
@media (max-width:1024px){
    .header-inner{height:64px;}
    .nav-toggle{display:inline-flex;}
    .main-nav{
        position:fixed;top:64px;right:0;transform:translateX(105%);
        background:#fff;width:min(420px,100%);height:calc(100vh - 64px);overflow-y:auto;
        border-left:1px solid var(--border);box-shadow:-10px 0 30px rgba(37,53,69,.1);
        transition:transform .3s ease;padding:20px 24px;display:block;
    }
    .main-nav.open{transform:translateX(0);}
    .nav-list{flex-direction:column;align-items:stretch;gap:4px;}
    .nav-link{height:50px;justify-content:flex-start;border-bottom:1px solid var(--border);border-radius:8px;padding:0 14px;}
    .nav-item.active .nav-link{border-bottom-color:var(--border);background:rgba(74,103,133,.08);}
    .mega-panel{display:none;}
    .hero{padding:50px 0 60px;}
    .hero h1{font-size:34px;}
    .hero-media{margin-top:32px;}
    .hero-float-card{left:8px;bottom:16px;}
    .focus-card .focus-thumb{width:240px;}
    .feature-grid{grid-template-columns:repeat(2,1fr);}
    .process-grid{grid-template-columns:repeat(2,1fr);}
    .faq-wrap{flex-direction:column;}
    .faq-left{flex:1 1 auto;width:100%;}
    .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
}
@media (max-width:640px){
    .container{padding:0 16px;}
    .section{padding:56px 0;}
    .section-title{font-size:22px;}
    .section-head{margin-bottom:24px;}
    .header-inner{height:60px;gap:12px;}
    .main-nav{top:60px;height:calc(100vh - 60px);}
    .brand-text{font-size:18px;}
    .header-cta{display:none;}
    .hero{padding:40px 0 50px;}
    .hero h1{font-size:28px;}
    .hero p{font-size:15px;}
    .hero-actions .btn{width:100%;}
    .hero-trust{flex-direction:column;gap:16px;align-items:flex-start;}
    .hero-float-card{position:static;margin-top:16px;width:100%;}
    .filter-wrap{flex-direction:column;align-items:stretch;padding:16px;}
    .filter-select{width:100%;}
    .filter-tabs{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px;}
    .filter-tab{flex-shrink:0;}
    .timeline-item{flex-direction:column;gap:14px;padding:20px 0;}
    .timeline-item .tl-date{width:100%;flex-direction:row;align-items:center;justify-content:flex-start;gap:8px;padding:8px 12px;}
    .tl-date b{font-size:18px;}
    .tl-date span{font-size:12px;}
    .timeline-item .tl-thumb{width:100%;aspect-ratio:16/9;}
    .timeline-item:hover{padding-left:0;padding-right:0;}
    .sidebar-sticky{position:static;}
    .focus-card{flex-direction:column;}
    .focus-card .focus-thumb{width:100%;aspect-ratio:16/9;}
    .focus-card .focus-thumb::after{background:linear-gradient(0deg,rgba(37,53,69,.4),transparent 50%);}
    .focus-card .focus-body{padding:22px 20px;}
    .focus-card .focus-body h3{font-size:17px;}
    .feature-grid{grid-template-columns:1fr;gap:16px;}
    .process-grid{grid-template-columns:1fr;gap:16px;}
    .cta-card{padding:32px 22px;flex-direction:column;align-items:stretch;}
    .cta-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-copy{font-size:12px;padding:20px 12px;}
}
@media (max-width:400px){
    .brand-text{font-size:16px;letter-spacing:0;}
    .brand-icon{width:32px;height:32px;font-size:14px;}
}

/* roulang page: category2 */
:root {
  --primary: #4A6785;
  --primary-hover: #3A526D;
  --navy: #253545;
  --gold: #B8935D;
  --bg: #F6F7F9;
  --white: #FFFFFF;
  --text: #2C3641;
  --text-secondary: #6B7A89;
  --text-placeholder: #A0ABB7;
  --border: #E4E8EC;
  --shadow-card: 0 2px 8px rgba(37, 53, 69, 0.06);
  --shadow-card-hover: 0 6px 20px rgba(37, 53, 69, 0.10);
  --shadow-btn: 0 2px 6px rgba(37, 53, 69, 0.20);
  --radius-card: 10px;
  --radius-btn: 6px;
  --radius-tag: 999px;
  --font-primary: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", serif;
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  color: var(--navy);
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 4px rgba(37, 53, 69, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(74, 103, 133, 0.12);
  border-radius: 10px;
  color: var(--primary);
  font-size: 20px;
  transition: all var(--transition);
}

.brand:hover .brand-icon {
  background: var(--primary);
  color: #fff;
  transform: rotate(8deg) scale(1.03);
}

.brand-text {
  font-size: 21px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.main-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 6px;
}

.nav-item {
  margin: 0;
}

.nav-link {
  display: block;
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: var(--radius-btn);
  position: relative;
  transition: all var(--transition);
  line-height: 1.4;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 4px;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  opacity: 0;
  transform: scaleX(0.4);
  transition: all var(--transition);
}

.nav-link:hover {
  color: var(--primary);
  background: rgba(74, 103, 133, 0.08);
}

.nav-link:hover::after,
.nav-item.active .nav-link::after {
  opacity: 1;
  transform: scaleX(1);
}

.nav-item.active .nav-link {
  color: var(--primary);
  font-weight: 500;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.header-actions .btn {
  margin-bottom: 0;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: var(--radius-btn);
  font-size: 20px;
  color: var(--text);
  cursor: pointer;
  transition: all var(--transition);
  padding: 0;
  line-height: 1;
}

.menu-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 24px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.4;
  font-family: var(--font-primary);
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(37, 53, 69, 0.25);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(37, 53, 69, 0.2);
}

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

.btn-outline:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37, 53, 69, 0.08);
}

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

.btn-lg {
  height: 48px;
  padding: 0 34px;
  font-size: 16px;
}

.btn-sm {
  height: 36px;
  padding: 0 18px;
  font-size: 14px;
}

/* ========== Hero ========== */
.service-hero {
  position: relative;
  padding: 80px 0 72px;
  background-color: var(--bg);
  background-image: url('/assets/images/backpic/back-3.webp');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.service-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(246, 247, 249, 0.93);
  z-index: 0;
}

.service-hero .container {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  background: rgba(184, 147, 93, 0.14);
  color: #7A5D33;
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-tag);
  letter-spacing: 0.02em;
}

.hero-badge i {
  font-size: 11px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 42px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
  margin: 20px 0 16px;
  letter-spacing: 0.02em;
}

.hero-subtitle {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin: 0 0 30px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 38px;
}

.hero-meta {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}

.meta-item {
  display: flex;
  flex-direction: column;
}

.meta-item strong {
  font-size: 24px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

.meta-item strong::after {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  margin-top: 5px;
}

.meta-item span {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 6px;
}

.hero-image {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(37, 53, 69, 0.12);
  transform: rotate(1.5deg);
  transition: transform var(--transition);
  border: 4px solid #fff;
}

.hero-image:hover {
  transform: rotate(0) scale(1.01);
}

.hero-image img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

/* ========== Section Common ========== */
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 52px;
}

.section-index {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.15em;
  margin-bottom: 10px;
  border: 1px solid rgba(184, 147, 93, 0.3);
  border-radius: var(--radius-tag);
  padding: 3px 14px;
  background: rgba(184, 147, 93, 0.06);
}

.section-title {
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 12px;
  line-height: 1.4;
}

.section-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.7;
}

/* ========== Services Grid ========== */
.services-section {
  padding: 80px 0 60px;
  background: #fff;
}

.services-grid {
  row-gap: 24px;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px 24px 24px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
  border-color: rgba(184, 147, 93, 0.35);
}

.service-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(74, 103, 133, 0.08);
  border-radius: 12px;
  font-size: 22px;
  color: var(--primary);
  margin-bottom: 18px;
  transition: all var(--transition);
}

.service-card:hover .service-icon {
  background: rgba(74, 103, 133, 0.14);
  color: var(--primary-hover);
  transform: scale(1.05);
}

.service-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 10px;
  line-height: 1.4;
}

.service-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0 0 20px;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.service-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  border-top: 1px dashed var(--border);
  padding-top: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition);
}

.service-link i {
  font-size: 12px;
  transition: transform var(--transition);
}

.service-card:hover .service-link {
  color: var(--primary-hover);
  gap: 10px;
}

.service-link:hover {
  color: var(--gold);
}

/* ========== Process Section ========== */
.process-section {
  padding: 80px 0;
  background: var(--bg);
}

.process-grid {
  row-gap: 24px;
}

.process-step {
  background: #fff;
  border-radius: var(--radius-card);
  padding: 32px 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
  height: 100%;
  position: relative;
}

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

.process-num {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 600;
  color: rgba(74, 103, 133, 0.20);
  line-height: 1;
  margin-bottom: 18px;
  display: block;
}

.process-step h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 10px;
}

.process-step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}

.process-step::before {
  content: '';
  position: absolute;
  left: 28px;
  right: 28px;
  bottom: 0;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform 0.35s ease;
}

.process-step:hover::before {
  transform: scaleX(1);
}

/* ========== Help Bar ========== */
.help-section {
  padding: 72px 0 80px;
  background: #fff;
}

.help-bar {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 40px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  box-shadow: var(--shadow-card);
}

.help-content {
  flex: 1;
}

.help-content h3 {
  font-size: 24px;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 8px;
  line-height: 1.4;
}

.help-content p {
  font-size: 15px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.7;
}

.help-action {
  flex-shrink: 0;
}

.help-action .btn {
  margin-bottom: 0;
}

/* ========== Footer ========== */
.site-footer {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.82);
  padding: 64px 0 0;
  font-size: 14px;
}

.site-footer .container {
  max-width: 1200px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .brand {
  margin-bottom: 16px;
}

.footer-brand .brand-icon {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.footer-brand .brand-text {
  color: #fff;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.65);
  margin: 0 0 20px;
  max-width: 320px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--gold);
  color: var(--navy);
  transform: translateY(-2px);
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 18px;
  letter-spacing: 0.02em;
}

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

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

.footer-col ul a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  transition: color var(--transition);
}

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

.footer-contact div {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
}

.footer-contact i {
  color: var(--gold);
  width: 16px;
  text-align: center;
  font-size: 13px;
}

.footer-copy {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

/* ========== Responsive ========== */
@media screen and (max-width: 1024px) {
  .menu-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 74px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 20px rgba(37, 53, 69, 0.08);
    padding: 12px 24px 20px;
    transform: translateY(-110%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    margin-left: 0;
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

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

  .nav-link {
    padding: 12px 14px;
    border-radius: var(--radius-btn);
  }

  .nav-link::after {
    display: none;
  }

  .header-actions {
    margin-left: auto;
  }

  .header-actions .btn {
    display: none;
  }

  .service-hero {
    padding: 48px 0 44px;
  }

  .hero-title {
    font-size: 32px;
  }

  .services-section,
  .process-section,
  .help-section {
    padding: 56px 0;
  }

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

  .help-bar {
    padding: 32px;
    flex-direction: row;
    align-items: center;
  }
}

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

  .header-inner {
    height: 64px;
  }

  .main-nav {
    top: 64px;
  }

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

  .brand-icon {
    width: 36px;
    height: 36px;
    font-size: 17px;
  }

  .hero-title {
    font-size: 28px;
    margin-top: 16px;
  }

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

  .hero-meta {
    gap: 20px;
  }

  .meta-item strong {
    font-size: 20px;
  }

  .hero-image {
    margin-top: 32px;
    transform: none;
  }

  .section-title {
    font-size: 22px;
  }

  .section-subtitle {
    font-size: 14px;
  }

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

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

  .process-step {
    padding: 24px 20px;
  }

  .help-bar {
    flex-direction: column;
    align-items: flex-start;
    padding: 28px 24px;
    gap: 20px;
  }

  .help-action .btn {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 32px;
  }

  .site-footer {
    padding-top: 44px;
  }

  .footer-copy {
    padding: 20px 16px;
    font-size: 12px;
  }
}

@media screen and (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
  }

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