/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --primary-900: #0e1a2e;
            --primary-800: #14243e;
            --primary-700: #1a2f52;
            --primary-600: #233c66;
            --accent-500: #d4a24e;
            --accent-400: #e0b56a;
            --accent-300: #ebc98a;
            --neutral-50: #f7f8fb;
            --neutral-100: #eef0f5;
            --neutral-200: #dfe3ec;
            --neutral-300: #c8cddb;
            --text-900: #161d2b;
            --text-700: #3d4556;
            --text-500: #6b7280;
            --white: #ffffff;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(14, 26, 46, 0.06);
            --shadow-md: 0 8px 24px rgba(14, 26, 46, 0.08);
            --shadow-lg: 0 16px 40px rgba(14, 26, 46, 0.12);
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
        }

        /* ========== 基础 Reset / Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-body);
            color: var(--text-900);
            background-color: var(--white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

        a:hover {
            color: var(--accent-500);
        }

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

        .container {
            max-width: 1200px;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        /* ========== 按钮 ========== */
        .btn {
            border-radius: 50rem;
            padding: 0.625rem 1.5rem;
            font-weight: 500;
            font-size: 0.9375rem;
            border: 1px solid transparent;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            transition: var(--transition-base);
            line-height: 1.5;
            white-space: nowrap;
        }

        .btn:focus,
        .btn:focus-visible {
            outline: none;
            box-shadow: 0 0 0 0.2rem rgba(212, 162, 78, 0.25);
        }

        .btn-accent {
            background-color: var(--accent-500);
            color: var(--primary-900);
            border-color: var(--accent-500);
        }

        .btn-accent:hover {
            background-color: var(--accent-400);
            color: var(--primary-900);
            border-color: var(--accent-400);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(212, 162, 78, 0.3);
        }

        .btn-accent:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(212, 162, 78, 0.25);
        }

        .btn-ghost {
            background-color: transparent;
            color: var(--white);
            border-color: rgba(255, 255, 255, 0.6);
        }

        .btn-ghost:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--white);
            border-color: var(--white);
        }

        .btn-ghost:active {
            background-color: rgba(255, 255, 255, 0.2);
        }

        .btn-sm {
            padding: 0.375rem 1rem;
            font-size: 0.85rem;
        }

        .btn-lg {
            padding: 0.75rem 2rem;
            font-size: 1rem;
        }

        /* ========== Section 通用 ========== */
        .section {
            padding: 5rem 0;
        }

        .section-gray {
            background-color: var(--neutral-50);
        }

        .section-dark {
            background-color: var(--primary-900);
            color: var(--white);
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 3rem;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.875rem;
            background-color: rgba(212, 162, 78, 0.12);
            color: var(--accent-500);
            border-radius: 50rem;
            font-size: 0.8125rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            margin-bottom: 0.875rem;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--text-900);
            letter-spacing: -0.02em;
            margin-bottom: 0.875rem;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.0625rem;
            color: var(--text-500);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .section-header .section-title {
            color: var(--text-900);
        }

        .section-header .section-subtitle {
            color: var(--text-500);
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: transparent;
        }

        .site-header .navbar {
            padding: 0.75rem 0;
        }

        .site-header .navbar-brand {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--white);
            letter-spacing: -0.01em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0;
        }

        .site-header .navbar-brand i {
            color: var(--accent-500);
            font-size: 1.375rem;
        }

        .site-header .navbar-brand:hover {
            color: var(--accent-400);
        }

        .site-header .navbar-nav {
            align-items: center;
            gap: 0.25rem;
        }

        .site-header .nav-link {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.9375rem;
            font-weight: 400;
            padding: 0.5rem 1rem !important;
            border-radius: 50rem;
            transition: var(--transition-base);
            position: relative;
        }

        .site-header .nav-link:hover {
            color: var(--white);
            background-color: rgba(255, 255, 255, 0.08);
        }

        .site-header .nav-link.active {
            color: var(--accent-500);
            font-weight: 500;
        }

        .site-header .nav-link.active::after {
            content: "";
            position: absolute;
            left: 1rem;
            right: 1rem;
            bottom: 0.15rem;
            height: 2px;
            background-color: var(--accent-500);
            border-radius: 2px;
        }

        .site-header .nav-cta {
            margin-left: 1rem;
        }

        .site-header .navbar-toggler {
            border: none;
            background: transparent;
            padding: 0.5rem;
        }

        .site-header .navbar-toggler i {
            color: var(--white);
            font-size: 1.375rem;
        }

        .site-header .navbar-toggler:focus {
            box-shadow: none;
        }

        /* ========== Hero ========== */
        .hero-section {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            background-color: var(--primary-900);
            overflow: hidden;
            padding-top: 4.5rem;
        }

        .hero-section .hero-content {
            padding: 3rem 2rem 3rem 0;
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background-color: rgba(212, 162, 78, 0.15);
            color: var(--accent-300);
            border: 1px solid rgba(212, 162, 78, 0.3);
            padding: 0.375rem 1rem;
            border-radius: 50rem;
            font-size: 0.8125rem;
            font-weight: 500;
            margin-bottom: 1.5rem;
        }

        .hero-badge::before {
            content: "";
            width: 6px;
            height: 6px;
            background-color: var(--accent-500);
            border-radius: 50%;
            display: inline-block;
        }

        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            color: var(--white);
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 1.25rem;
        }

        .hero-title .highlight {
            color: var(--accent-500);
        }

        .hero-text {
            font-size: 1.125rem;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
            margin-bottom: 2rem;
            max-width: 480px;
        }

        .hero-actions {
            display: flex;
            gap: 0.875rem;
            flex-wrap: wrap;
        }

        .hero-visual {
            position: relative;
            min-height: 500px;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1;
        }

        .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            z-index: 0;
        }

        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(14, 26, 46, 0.55) 0%, rgba(14, 26, 46, 0.25) 100%);
            z-index: 1;
        }

        .hero-float-card {
            position: absolute;
            z-index: 3;
            display: flex;
            align-items: center;
            gap: 0.75rem;
            background-color: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-md);
            padding: 0.875rem 1.125rem;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--neutral-100);
        }

        .hero-float-1 {
            top: 26%;
            left: 6%;
            animation: float 3s ease-in-out infinite;
        }

        .hero-float-2 {
            bottom: 22%;
            right: 8%;
            animation: float 3.5s ease-in-out 0.5s infinite;
        }

        .hero-float-card i {
            font-size: 1.375rem;
            color: var(--accent-500);
            background-color: rgba(212, 162, 78, 0.12);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-float-card strong {
            font-size: 0.9375rem;
            font-weight: 600;
            color: var(--text-900);
            display: block;
            line-height: 1.3;
        }

        .hero-float-card small {
            font-size: 0.8125rem;
            color: var(--text-500);
            display: block;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }

        .hero-wave {
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 100%;
            height: 70px;
            z-index: 5;
            pointer-events: none;
        }

        .hero-wave path {
            fill: var(--neutral-50);
        }

        /* ========== About ========== */
        .about-section {
            background-color: var(--white);
            padding: 5rem 0;
        }

        .about-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            height: 100%;
            min-height: 380px;
        }

        .about-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            top: 0;
            left: 0;
        }

        .about-media::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 40%;
            background: linear-gradient(to top, rgba(14, 26, 46, 0.3), transparent);
            pointer-events: none;
        }

        .about-content {
            padding-left: 2.5rem;
        }

        .about-content .section-tag {
            margin-bottom: 0.75rem;
        }

        .about-content .section-title {
            margin-bottom: 1.25rem;
        }

        .about-content>p {
            color: var(--text-500);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }

        .about-features {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
            margin-top: 1.5rem;
        }

        .feature-item {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
        }

        .feature-item .icon-wrapper {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background-color: rgba(212, 162, 78, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.125rem;
            color: var(--accent-500);
        }

        .feature-item h3 {
            font-size: 1.0625rem;
            font-weight: 600;
            color: var(--text-900);
            margin-bottom: 0.25rem;
        }

        .feature-item p {
            font-size: 0.9375rem;
            color: var(--text-500);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== Category ========== */
        .category-section {
            background-color: var(--neutral-50);
            padding: 5rem 0;
        }

        .category-card {
            display: block;
            background-color: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--neutral-100);
            box-shadow: var(--shadow-sm);
            transition: var(--transition-base);
            height: 100%;
            position: relative;
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(212, 162, 78, 0.4);
        }

        .category-card:active {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .category-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .category-card-body {
            padding: 1.75rem;
        }

        .category-card-body .category-label {
            display: inline-block;
            font-size: 0.8125rem;
            font-weight: 500;
            color: var(--accent-500);
            margin-bottom: 0.5rem;
            letter-spacing: 0.02em;
        }

        .category-card-body h3 {
            font-size: 1.375rem;
            font-weight: 700;
            color: var(--text-900);
            margin-bottom: 0.75rem;
            line-height: 1.3;
        }

        .category-card-body p {
            color: var(--text-500);
            font-size: 0.9375rem;
            line-height: 1.7;
            margin-bottom: 1rem;
        }

        .category-link {
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--primary-700);
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
        }

        .category-card:hover .category-link {
            color: var(--accent-500);
            gap: 0.625rem;
        }

        .category-link i {
            font-size: 0.8125rem;
            transition: transform 0.3s ease;
        }

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

        /* ========== News ========== */
        .news-section {
            background-color: var(--white);
            padding: 5rem 0;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .news-item {
            display: block;
            background-color: var(--white);
            border: 1px solid var(--neutral-100);
            border-radius: var(--radius-md);
            padding: 1.5rem 1.75rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-base);
            border-left: 4px solid transparent;
        }

        .news-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-left-color: var(--accent-500);
            border-color: rgba(212, 162, 78, 0.3);
        }

        .news-item:active {
            transform: translateY(-1px);
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 0.625rem;
        }

        .badge-tag {
            display: inline-flex;
            align-items: center;
            padding: 0.2rem 0.75rem;
            background-color: rgba(212, 162, 78, 0.12);
            color: var(--accent-500);
            border-radius: 50rem;
            font-size: 0.75rem;
            font-weight: 500;
        }

        .news-date {
            font-size: 0.8125rem;
            color: var(--text-500);
        }

        .news-title {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--text-900);
            margin-bottom: 0.375rem;
            line-height: 1.4;
        }

        .news-title:hover {
            color: var(--primary-700);
        }

        .news-excerpt {
            font-size: 0.9375rem;
            color: var(--text-500);
            line-height: 1.6;
            margin-bottom: 0.75rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-link {
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--primary-700);
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
        }

        .news-item:hover .news-link {
            color: var(--accent-500);
        }

        .news-empty {
            text-align: center;
            padding: 3rem 1rem;
            color: var(--text-500);
            background-color: var(--neutral-50);
            border-radius: var(--radius-md);
            font-size: 1rem;
        }

        /* ========== Stats ========== */
        .stats-section {
            background-color: var(--primary-900);
            padding: 4.5rem 0;
            color: var(--white);
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(212, 162, 78, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }

        .stats-section::after {
            content: "";
            position: absolute;
            bottom: -50%;
            left: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
            pointer-events: none;
        }

        .stats-section .container {
            position: relative;
            z-index: 1;
        }

        .stat-item {
            text-align: center;
            padding: 1.5rem 1rem;
        }

        .stat-item .stat-icon {
            font-size: 2rem;
            color: var(--accent-500);
            margin-bottom: 0.75rem;
        }

        .stat-item .stat-number {
            font-size: 2.75rem;
            font-weight: 800;
            color: var(--white);
            line-height: 1.2;
            margin-bottom: 0.25rem;
            letter-spacing: -0.02em;
        }

        .stat-item .stat-label {
            font-size: 0.9375rem;
            color: rgba(255, 255, 255, 0.6);
        }

        /* ========== Steps ========== */
        .steps-section {
            background-color: var(--neutral-50);
            padding: 5rem 0;
        }

        .step-item {
            text-align: center;
            padding: 2rem 1.25rem;
            background-color: var(--white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--neutral-100);
            box-shadow: var(--shadow-sm);
            transition: var(--transition-base);
            height: 100%;
        }

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

        .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-500), var(--accent-400));
            color: var(--primary-900);
            font-size: 1.25rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.25rem;
            box-shadow: 0 6px 16px rgba(212, 162, 78, 0.3);
        }

        .step-item h3 {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--text-900);
            margin-bottom: 0.5rem;
        }

        .step-item p {
            font-size: 0.9375rem;
            color: var(--text-500);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background-color: var(--white);
            padding: 5rem 0;
        }

        .faq-section .accordion {
            max-width: 840px;
            margin: 0 auto;
        }

        .accordion-item {
            background-color: var(--white);
            border: 1px solid var(--neutral-100);
            border-radius: var(--radius-md) !important;
            margin-bottom: 1rem;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-base);
        }

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

        .accordion-button {
            background-color: var(--white);
            color: var(--text-900);
            font-weight: 500;
            padding: 1.25rem 1.5rem;
            font-size: 1rem;
            border: none;
            cursor: pointer;
        }

        .accordion-button:not(.collapsed) {
            background-color: var(--neutral-50);
            color: var(--primary-700);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }

        .accordion-button::after {
            background-size: 1rem;
            opacity: 0.6;
        }

        .accordion-button:not(.collapsed)::after {
            opacity: 1;
        }

        .accordion-body {
            padding: 1.25rem 1.5rem;
            color: var(--text-500);
            background-color: var(--white);
            border-top: 1px solid var(--neutral-100);
            font-size: 0.9375rem;
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background-color: var(--neutral-50);
            padding: 5rem 0;
        }

        .cta-box {
            background: linear-gradient(135deg, var(--primary-800), var(--primary-600));
            border-radius: var(--radius-lg);
            padding: 4rem 2.5rem;
            text-align: center;
            color: var(--white);
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: -30%;
            right: -10%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212, 162, 78, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-box::after {
            content: "";
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-box .container {
            position: relative;
            z-index: 1;
        }

        .cta-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 0.875rem;
        }

        .cta-desc {
            font-size: 1.0625rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 2rem;
        }

        .cta-form {
            display: flex;
            max-width: 460px;
            margin: 0 auto;
            gap: 0.5rem;
        }

        .cta-form input[type="email"] {
            flex: 1;
            border-radius: 50rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background-color: rgba(255, 255, 255, 0.1);
            padding: 0.625rem 1.375rem;
            color: var(--white);
            font-size: 0.9375rem;
        }

        .cta-form input[type="email"]::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .cta-form input[type="email"]:focus {
            outline: none;
            border-color: var(--accent-500);
            background-color: rgba(255, 255, 255, 0.15);
        }

        .cta-form .btn {
            flex-shrink: 0;
        }

        .cta-tip {
            font-size: 0.8125rem;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 1rem;
            margin-bottom: 0;
        }

        /* ========== Footer ========== */
        .site-footer {
            background-color: var(--primary-900);
            color: rgba(255, 255, 255, 0.7);
            padding: 4rem 0 0;
        }

        .site-footer .footer-brand {
            font-size: 1.375rem;
            font-weight: 700;
            color: var(--white);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }

        .site-footer .footer-brand i {
            color: var(--accent-500);
        }

        .site-footer .footer-desc {
            font-size: 0.9375rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.5);
            max-width: 320px;
        }

        .site-footer h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--white);
            margin-bottom: 1.25rem;
        }

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

        .site-footer ul li {
            margin-bottom: 0.75rem;
        }

        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9375rem;
        }

        .site-footer ul li a:hover {
            color: var(--accent-500);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 1.5rem 0;
            margin-top: 3rem;
            text-align: center;
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.35);
        }

        /* ========== Focus 可访问性 ========== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-500);
            outline-offset: 2px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            .site-header {
                background-color: rgba(14, 26, 46, 0.92);
            }

            .site-header .navbar-collapse {
                background-color: var(--primary-900);
                padding: 1rem;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                margin-top: 0.5rem;
            }

            .site-header .navbar-nav {
                align-items: flex-start;
                gap: 0;
            }

            .site-header .nav-link.active::after {
                bottom: 0.1rem;
            }

            .site-header .nav-cta {
                margin-left: 0;
                margin-top: 0.75rem;
            }

            .hero-section {
                min-height: auto;
                padding-top: 5rem;
            }

            .hero-section .hero-content {
                padding: 3rem 0 2rem;
            }

            .hero-title {
                font-size: 2.25rem;
            }

            .hero-visual {
                min-height: 380px;
            }

            .hero-float-1 {
                left: 10%;
            }

            .hero-float-2 {
                right: 6%;
            }

            .about-content {
                padding-left: 0;
                padding-top: 2rem;
            }

            .cta-box {
                padding: 3rem 1.5rem;
            }

            .cta-title {
                font-size: 1.625rem;
            }

            .section-title {
                font-size: 1.75rem;
            }
        }

        @media (max-width: 767.98px) {
            .section {
                padding: 3.5rem 0;
            }

            .hero-section .hero-content {
                padding: 2.5rem 0 1.5rem;
            }

            .hero-title {
                font-size: 1.875rem;
            }

            .hero-text {
                font-size: 1rem;
            }

            .hero-visual {
                min-height: 300px;
            }

            .hero-float-card {
                padding: 0.625rem 0.875rem;
            }

            .hero-float-card i {
                width: 32px;
                height: 32px;
                font-size: 1rem;
            }

            .hero-float-1 {
                top: 20%;
                left: 5%;
            }

            .hero-float-2 {
                bottom: 15%;
                right: 4%;
            }

            .stat-item .stat-number {
                font-size: 2rem;
            }

            .cta-form {
                flex-direction: column;
            }

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

            .site-footer {
                padding-top: 3rem;
            }

            .site-footer h4 {
                margin-bottom: 1rem;
            }

            .site-footer .footer-brand {
                margin-bottom: 0.75rem;
            }

            .site-footer ul {
                margin-bottom: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.625rem;
            }

            .hero-text {
                font-size: 0.9375rem;
            }

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

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

            .hero-visual {
                min-height: 240px;
            }

            .hero-float-1 {
                top: 12%;
                left: 3%;
            }

            .hero-float-2 {
                bottom: 10%;
                right: 3%;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .cta-title {
                font-size: 1.375rem;
            }

            .cta-desc {
                font-size: 0.9375rem;
            }

            .news-item {
                padding: 1.125rem 1.25rem;
            }

            .stat-item {
                padding: 1rem 0.5rem;
            }
        }

/* roulang page: article */
:root {
    --primary: #1a2e45;
    --primary-light: #2b4c78;
    --primary-dark: #101d2c;
    --accent: #d98a4a;
    --accent-light: #f0b37e;
    --accent-dark: #b96f35;
    --teal: #2a9d8f;
    --bg: #f7f5f1;
    --surface: #ffffff;
    --text: #1f2a37;
    --text-weak: #6b7a8a;
    --border: #e4e0d8;
    --radius-lg: 18px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 2px 8px rgba(26,46,69,0.05);
    --shadow: 0 6px 24px rgba(26,46,69,0.08);
    --shadow-lg: 0 16px 40px rgba(26,46,69,0.12);
    --transition: all 0.3s ease;
    --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

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

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

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
a:focus-visible { outline: 3px solid rgba(217,138,74,0.45); outline-offset: 2px; border-radius: 4px; }
button:focus-visible { outline: 3px solid rgba(217,138,74,0.45); outline-offset: 2px; }
input:focus-visible { outline: 3px solid rgba(217,138,74,0.3); outline-offset: 1px; }

.container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }

/* ============ Header / Nav ============ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1030;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(228,224,216,0.8);
    box-shadow: 0 1px 0 rgba(26,46,69,0.03);
}

.site-header .navbar {
    padding: 14px 0;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--primary);
    transition: var(--transition);
}

.navbar-brand:hover {
    color: var(--accent);
    transform: translateY(-1px);
}

.navbar-brand i {
    color: var(--accent);
    font-size: 22px;
    filter: drop-shadow(0 2px 6px rgba(217,138,74,0.3));
}

.navbar-toggler {
    border: none;
    padding: 6px 10px;
    color: var(--primary);
    font-size: 20px;
    line-height: 1;
    background: rgba(26,46,69,0.06);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.navbar-toggler:hover {
    background: rgba(26,46,69,0.12);
}

.navbar-toggler:focus {
    box-shadow: none;
}

.main-menu {
    gap: 6px;
}

.main-menu .nav-link {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-weak);
    padding: 8px 18px;
    border-radius: 30px;
    position: relative;
    transition: var(--transition);
}

.main-menu .nav-link:hover {
    color: var(--primary);
    background: rgba(26,46,69,0.06);
}

.main-menu .nav-link.active {
    color: var(--primary);
    background: rgba(26,46,69,0.08);
    font-weight: 700;
}

.main-menu .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
}

.nav-cta {
    margin-left: 12px;
}

/* ============ Buttons ============ */
.btn {
    border-radius: 40px;
    padding: 10px 24px;
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.3px;
    border: 2px solid transparent;
    transition: var(--transition);
}

.btn-sm {
    padding: 7px 18px;
    font-size: 13px;
}

.btn-lg {
    padding: 14px 38px;
    font-size: 16px;
}

.btn-accent {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    box-shadow: 0 4px 14px rgba(217,138,74,0.3);
}

.btn-accent:hover {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(217,138,74,0.4);
}

.btn-accent:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(217,138,74,0.3);
}

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

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

.btn-light {
    background: #fff;
    color: var(--primary);
    border-color: #fff;
    box-shadow: 0 4px 14px rgba(0,0,0,0.08);
}

.btn-light:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(0,0,0,0.14);
    color: var(--accent);
}

/* ============ Page Banner ============ */
.page-banner {
    position: relative;
    padding: 90px 0 100px;
    background: linear-gradient(135deg, rgba(16,29,44,0.92) 0%, rgba(26,46,69,0.82) 60%, rgba(43,76,120,0.72) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    overflow: hidden;
    color: #fff;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: -60%;
    right: -10%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(217,138,74,0.25) 0%, transparent 70%);
    pointer-events: none;
}

.page-banner::after {
    content: '';
    position: absolute;
    bottom: -40%;
    left: -5%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(42,157,143,0.2) 0%, transparent 70%);
    pointer-events: none;
}

.banner-inner {
    position: relative;
    z-index: 2;
    text-align: center;
}

.banner-breadcrumb {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    letter-spacing: 0.5px;
    color: rgba(255,255,255,0.75);
    margin-bottom: 18px;
}

.banner-breadcrumb a {
    color: rgba(255,255,255,0.85);
    transition: var(--transition);
}

.banner-breadcrumb a:hover {
    color: var(--accent-light);
}

.banner-breadcrumb i {
    font-size: 10px;
    color: rgba(255,255,255,0.5);
}

.banner-category {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 5px 16px;
    border-radius: 20px;
    margin-bottom: 16px;
    text-transform: uppercase;
    box-shadow: 0 4px 14px rgba(217,138,74,0.35);
}

.page-banner h1 {
    font-size: clamp(26px, 4vw, 38px);
    font-weight: 800;
    line-height: 1.35;
    max-width: 900px;
    margin: 0 auto;
    letter-spacing: 0.5px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.banner-meta {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 18px;
    font-size: 13px;
    color: rgba(255,255,255,0.8);
}

.banner-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.banner-meta i {
    color: var(--accent-light);
}

/* ============ Article Layout ============ */
.article-section {
    padding: 60px 0 70px;
    background: var(--bg);
}

.article-wrapper {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    border: 1px solid rgba(228,224,216,0.5);
}

.article-main {
    padding: 48px 52px;
}

.article-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 14px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 32px;
}

.article-toolbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.article-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(42,157,143,0.12);
    color: var(--teal);
    font-size: 13px;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 20px;
}

.article-toolbar-right {
    display: flex;
    gap: 8px;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(26,46,69,0.06);
    color: var(--text-weak);
    font-size: 14px;
    transition: var(--transition);
}

.share-btn:hover {
    background: var(--accent);
    color: #fff;
    transform: translateY(-2px);
}

/* Article Body */
.article-body {
    font-size: 16.5px;
    line-height: 2;
    color: #2d3748;
}

.article-body p {
    margin-bottom: 1.6em;
}

.article-body h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin: 2em 0 0.8em;
    padding-left: 18px;
    border-left: 4px solid var(--accent);
    border-radius: 0 4px 4px 0;
    line-height: 1.4;
}

.article-body h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    margin: 1.8em 0 0.6em;
    line-height: 1.4;
}

.article-body h4 {
    font-size: 17px;
    font-weight: 700;
    color: var(--primary);
    margin: 1.5em 0 0.5em;
}

.article-body blockquote {
    margin: 2em 0;
    padding: 20px 28px;
    background: rgba(42,157,143,0.06);
    border-left: 4px solid var(--teal);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--text-weak);
    font-style: italic;
    font-size: 15px;
    line-height: 1.9;
}

.article-body blockquote p:last-child {
    margin-bottom: 0;
}

.article-body ul,
.article-body ol {
    margin: 0 0 1.6em 1.5em;
    padding-left: 0.5em;
}

.article-body li {
    margin-bottom: 0.5em;
}

.article-body ul li::marker {
    color: var(--accent);
}

.article-body ol li::marker {
    color: var(--teal);
    font-weight: 700;
}

.article-body img {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    margin: 2em auto;
}

.article-body a {
    color: var(--accent-dark);
    text-decoration: underline;
    text-decoration-color: rgba(217,138,74,0.4);
    text-underline-offset: 4px;
}

.article-body a:hover {
    color: var(--accent);
    text-decoration-color: var(--accent);
}

.article-body hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2.5em 0;
}

.article-body code {
    background: rgba(26,46,69,0.06);
    border-radius: 4px;
    padding: 2px 8px;
    font-size: 0.9em;
    font-family: "SF Mono", Menlo, Consolas, monospace;
    color: var(--primary);
}

.article-body pre {
    background: var(--primary-dark);
    color: #e8eef5;
    border-radius: var(--radius-md);
    padding: 24px 28px;
    overflow-x: auto;
    margin: 2em 0;
    font-size: 14px;
    line-height: 1.7;
}

.article-body pre code {
    background: transparent;
    color: inherit;
    padding: 0;
}

/* Article Footer / Action */
.article-action {
    margin-top: 48px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 18px;
}

.action-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ============ Sidebar ============ */
.sidebar {
    padding: 48px 30px;
    background: #faf9f6;
    border-left: 1px solid var(--border);
}

.widget {
    margin-bottom: 36px;
}

.widget:last-child {
    margin-bottom: 0;
}

.widget-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: 0.5px;
}

.widget-title i {
    color: var(--accent);
    font-size: 15px;
}

.widget-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

.brand-widget {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    color: #fff;
}

.brand-widget .brand-logo {
    font-size: 20px;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.brand-widget .brand-logo i {
    color: var(--accent-light);
}

.brand-widget p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255,255,255,0.85);
    margin-bottom: 20px;
}

.brand-widget .btn {
    width: 100%;
}

.widget-links {
    list-style: none;
    margin: 0;
    padding: 0;
}

.widget-links li {
    margin-bottom: 4px;
}

.widget-links a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-weak);
    transition: var(--transition);
}

.widget-links a:hover {
    background: rgba(26,46,69,0.05);
    color: var(--primary);
    padding-left: 18px;
}

.widget-links a i {
    font-size: 11px;
    color: var(--accent);
}

.widget-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.widget-tags a {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 20px;
    background: rgba(26,46,69,0.06);
    font-size: 12.5px;
    font-weight: 500;
    color: var(--text-weak);
    transition: var(--transition);
}

.widget-tags a:hover {
    background: var(--accent);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(217,138,74,0.25);
}

/* ============ Not Found ============ */
.not-found-wrap {
    padding: 80px 24px;
    text-align: center;
}

.not-found-wrap i {
    font-size: 48px;
    color: rgba(26,46,69,0.2);
    margin-bottom: 18px;
}

.not-found-wrap h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 12px;
}

.not-found-wrap p {
    color: var(--text-weak);
    margin-bottom: 28px;
    font-size: 15px;
}

/* ============ Related Articles ============ */
.related-section {
    padding: 70px 0;
    background: var(--surface);
}

.section-head {
    text-align: center;
    margin-bottom: 44px;
}

.section-head .eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent);
    background: rgba(217,138,74,0.12);
    padding: 5px 16px;
    border-radius: 20px;
    margin-bottom: 14px;
}

.section-head h2 {
    font-size: clamp(22px, 3vw, 30px);
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 10px;
    letter-spacing: 0.5px;
}

.section-head p {
    color: var(--text-weak);
    font-size: 15px;
    max-width: 560px;
    margin: 0 auto;
}

.related-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.related-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(217,138,74,0.3);
}

.related-card .card-img {
    position: relative;
    height: 200px;
    overflow: hidden;
}

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

.related-card:hover .card-img img {
    transform: scale(1.06);
}

.card-img .img-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(16,29,44,0.5) 0%, transparent 60%);
    opacity: 0;
    transition: var(--transition);
}

.related-card:hover .img-overlay {
    opacity: 1;
}

.card-img .badge-cat {
    position: absolute;
    top: 14px;
    left: 14px;
    background: rgba(255,255,255,0.92);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    backdrop-filter: blur(6px);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.related-card .card-body {
    padding: 22px 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.related-card .card-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    line-height: 1.55;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: var(--transition);
}

.related-card .card-title a:hover {
    color: var(--accent);
}

.related-card .card-text {
    font-size: 14px;
    color: var(--text-weak);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 14px;
    flex: 1;
}

.card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12.5px;
    color: var(--text-weak);
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.card-meta span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.card-meta i {
    color: var(--accent);
    font-size: 11px;
}

.card-meta .read-more {
    color: var(--accent-dark);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12.5px;
}

.card-meta .read-more:hover {
    color: var(--accent);
    gap: 8px;
}

/* ============ FAQ ============ */
.faq-section {
    padding: 70px 0;
    background: var(--bg);
}

.faq-list {
    max-width: 860px;
    margin: 0 auto;
}

.faq-item {
    background: var(--surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    margin-bottom: 14px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: rgba(217,138,74,0.3);
    box-shadow: var(--shadow-sm);
}

.faq-item .faq-q {
    padding: 20px 26px;
    display: flex;
    align-items: center;
    gap: 16px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    transition: var(--transition);
}

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

.faq-item .faq-q .num {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(42,157,143,0.1);
    color: var(--teal);
    border-radius: 50%;
    font-size: 13px;
    font-weight: 700;
}

.faq-item .faq-q i {
    margin-left: auto;
    color: var(--text-weak);
    font-size: 14px;
    transition: var(--transition);
}

.faq-item .faq-a {
    padding: 0 26px 20px 74px;
    font-size: 14.5px;
    line-height: 1.85;
    color: var(--text-weak);
    display: none;
}

.faq-item.open .faq-q {
    color: var(--primary);
}

.faq-item.open .faq-q i {
    transform: rotate(180deg);
    color: var(--accent);
}

.faq-item.open {
    border-color: rgba(217,138,74,0.35);
    box-shadow: var(--shadow-sm);
}

/* ============ CTA ============ */
.cta-section {
    padding: 0;
    position: relative;
}

.cta-box {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 70%, #345a85 100%);
    border-radius: var(--radius-lg);
    padding: 52px 56px;
    color: #fff;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(26,46,69,0.25);
    margin: 70px 0;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -15%;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(217,138,74,0.3) 0%, transparent 70%);
}

.cta-box::after {
    content: '';
    position: absolute;
    bottom: -40%;
    left: -5%;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(42,157,143,0.25) 0%, transparent 70%);
}

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

.cta-box h2 {
    font-size: clamp(22px, 3vw, 30px);
    font-weight: 800;
    margin-bottom: 14px;
    letter-spacing: 0.5px;
}

.cta-box p {
    color: rgba(255,255,255,0.85);
    font-size: 15px;
    max-width: 600px;
    margin-bottom: 28px;
    line-height: 1.8;
}

.cta-form {
    display: flex;
    gap: 10px;
    max-width: 460px;
    flex-wrap: wrap;
}

.cta-form input {
    flex: 1;
    min-width: 220px;
    border: none;
    border-radius: 40px;
    padding: 13px 22px;
    font-size: 14px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.25);
    color: #fff;
    backdrop-filter: blur(6px);
    transition: var(--transition);
}

.cta-form input::placeholder {
    color: rgba(255,255,255,0.6);
}

.cta-form input:focus {
    background: rgba(255,255,255,0.22);
    border-color: rgba(217,138,74,0.7);
    outline: none;
    box-shadow: 0 0 0 4px rgba(217,138,74,0.15);
}

/* ============ Footer ============ */
.site-footer {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.75);
    padding: 64px 0 0;
}

.site-footer .footer-brand {
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.site-footer .footer-brand i {
    color: var(--accent-light);
}

.footer-desc {
    font-size: 14px;
    line-height: 1.9;
    color: rgba(255,255,255,0.6);
    max-width: 340px;
}

.site-footer h4 {
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}

.site-footer h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
}

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

.site-footer ul li {
    margin-bottom: 10px;
}

.site-footer ul li a {
    color: rgba(255,255,255,0.6);
    font-size: 14px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.site-footer ul li a::before {
    content: '';
    width: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    transition: var(--transition);
}

.site-footer ul li a:hover {
    color: var(--accent-light);
    padding-left: 4px;
}

.site-footer ul li a:hover::before {
    width: 8px;
}

.footer-bottom {
    margin-top: 48px;
    padding: 20px 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.45);
    letter-spacing: 0.3px;
}

/* ============ Responsive ============ */
@media (max-width: 1024px) {
    .article-main {
        padding: 36px 32px;
    }
    .sidebar {
        padding: 36px 24px;
    }
    .cta-box {
        padding: 42px 36px;
    }
}

@media (max-width: 991px) {
    .main-menu {
        gap: 2px;
        margin-top: 12px;
    }
    .main-menu .nav-link {
        padding: 8px 14px;
        font-size: 14px;
    }
    .nav-cta {
        margin-left: 0;
        margin-top: 10px;
        margin-bottom: 6px;
    }
    .sidebar {
        border-left: none;
        border-top: 1px solid var(--border);
    }
    .article-toolbar {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 768px) {
    body { font-size: 15px; }
    .page-banner { padding: 60px 0 70px; }
    .article-section { padding: 40px 0 50px; }
    .article-main { padding: 28px 22px; }
    .sidebar { padding: 30px 22px; }
    .article-body { font-size: 15.5px; line-height: 1.95; }
    .article-body h2 { font-size: 20px; }
    .article-body h3 { font-size: 18px; }
    .cta-box { padding: 36px 24px; margin: 50px 0; }
    .cta-form input { min-width: 100%; }
    .cta-form .btn { width: 100%; }
    .related-section { padding: 50px 0; }
    .faq-section { padding: 50px 0; }
    .site-footer { padding: 48px 0 0; }
    .banner-meta { gap: 10px; }
    .article-action { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
    .container { padding-left: 16px; padding-right: 16px; }
    .page-banner { padding: 46px 0 56px; }
    .page-banner h1 { font-size: 22px; }
    .banner-breadcrumb { font-size: 12px; gap: 6px; }
    .article-main { padding: 20px 16px; }
    .article-body { font-size: 15px; line-height: 1.9; }
    .article-body blockquote { padding: 16px 20px; }
    .widget { margin-bottom: 26px; }
    .related-card .card-img { height: 170px; }
    .faq-item .faq-q { padding: 16px 18px; font-size: 14px; }
    .faq-item .faq-a { padding: 0 18px 16px 60px; }
    .cta-box { padding: 28px 16px; margin: 40px 0; border-radius: 14px; }
    .footer-desc { max-width: 100%; }
}

/* roulang page: category2 */
:root {
            --primary: #2b6de8;
            --primary-dark: #1d4ed8;
            --primary-light: #e8f0fe;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg: #ffffff;
            --bg-soft: #f8fafc;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-light: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
            --shadow: 0 4px 16px rgba(0,0,0,.08);
            --shadow-lg: 0 12px 36px rgba(0,0,0,.10);
            --space-section: 72px;
            --navbar-h: 68px;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img, svg { max-width: 100%; display: block; }
        a { color: inherit; text-decoration: none; transition: color .25s; }
        a:hover { color: var(--primary); }
        button, input, select, textarea { font-family: inherit; }

        /* Layout */
        .container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }
        .section { padding: var(--space-section) 0; }
        .section-alt { background-color: var(--bg-soft); }
        .section-head { max-width: 720px; margin-bottom: 44px; }
        .section-head .eyebrow {
            display: inline-flex; align-items: center; gap: 8px;
            font-size: 13px; font-weight: 700; letter-spacing: 2px;
            text-transform: uppercase; color: var(--primary);
            background: var(--primary-light);
            padding: 6px 16px; border-radius: 999px; margin-bottom: 16px;
        }
        .section-head h2 { font-size: 30px; font-weight: 800; color: var(--text); line-height: 1.35; margin-bottom: 12px; }
        .section-head p { color: var(--text-light); font-size: 16px; }
        .section-head.center { text-align: center; margin-left: auto; margin-right: auto; }

        /* Header / Nav */
        .site-header {
            position: sticky; top: 0; z-index: 1000;
            background: rgba(255,255,255,.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226,232,240,.7);
        }
        .site-header .navbar { min-height: var(--navbar-h); padding-top: 0; padding-bottom: 0; }
        .site-header .navbar-brand {
            display: inline-flex; align-items: center; gap: 10px;
            font-size: 18px; font-weight: 800; color: var(--text);
            letter-spacing: .3px; padding: 8px 0;
        }
        .site-header .navbar-brand i { color: var(--primary); font-size: 20px; }
        .site-header .navbar-brand:hover { color: var(--primary); }
        .site-header .navbar-toggler {
            border: 1px solid var(--border); border-radius: 10px;
            padding: 6px 10px; color: var(--text); font-size: 18px;
            background: #fff; box-shadow: var(--shadow-sm);
        }
        .site-header .navbar-toggler:focus { outline: none; box-shadow: 0 0 0 3px rgba(43,109,232,.15); }
        .site-header .navbar-nav .nav-link {
            font-size: 15px; font-weight: 600; color: var(--text-light);
            padding: 10px 16px; border-radius: 10px; position: relative;
            transition: color .25s, background .25s;
        }
        .site-header .navbar-nav .nav-link:hover { color: var(--primary); background: var(--primary-light); }
        .site-header .navbar-nav .nav-link.active { color: var(--primary); background: var(--primary-light); font-weight: 700; }
        .site-header .nav-cta { margin-left: 8px; }
        .btn-accent {
            display: inline-flex; align-items: center; gap: 6px;
            background: var(--accent); color: #fff; border: none;
            font-weight: 700; padding: 8px 20px; border-radius: 10px;
            font-size: 14px; transition: all .3s; box-shadow: 0 2px 8px rgba(245,158,11,.35);
        }
        .btn-accent:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 18px rgba(245,158,11,.4); }
        .btn-accent:active { transform: translateY(0); box-shadow: 0 2px 6px rgba(245,158,11,.3); }
        .btn-primary-custom {
            display: inline-flex; align-items: center; gap: 8px;
            background: var(--primary); color: #fff; border: none;
            font-weight: 700; padding: 12px 26px; border-radius: 10px;
            font-size: 15px; transition: all .3s; box-shadow: 0 4px 12px rgba(43,109,232,.3);
        }
        .btn-primary-custom:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 22px rgba(43,109,232,.4); }
        .btn-primary-custom:active { transform: translateY(0); }
        .btn-outline-custom {
            display: inline-flex; align-items: center; gap: 8px;
            background: transparent; color: var(--primary); border: 2px solid var(--primary);
            font-weight: 700; padding: 10px 24px; border-radius: 10px;
            font-size: 15px; transition: all .3s;
        }
        .btn-outline-custom:hover { background: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 16px rgba(43,109,232,.25); }
        .btn-outline-custom:active { transform: translateY(0); }

        /* Hero / Banner */
        .category-hero {
            position: relative;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #2b6de8 100%);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover; background-position: center;
            padding: 120px 0 100px; color: #fff; text-align: center;
        }
        .category-hero::before {
            content: ""; position: absolute; inset: 0;
            background: rgba(15,23,42,.72);
            background: linear-gradient(180deg, rgba(15,23,42,.78) 0%, rgba(15,23,42,.65) 50%, rgba(15,23,42,.82) 100%);
        }
        .category-hero .container { position: relative; z-index: 2; }
        .category-hero .hero-tag {
            display: inline-flex; align-items: center; gap: 8px;
            background: rgba(255,255,255,.15); border: 1px solid rgba(255,255,255,.28);
            padding: 8px 20px; border-radius: 999px; font-size: 14px;
            font-weight: 600; letter-spacing: 1px; margin-bottom: 18px;
            backdrop-filter: blur(6px);
        }
        .category-hero h1 { font-size: 48px; font-weight: 800; line-height: 1.2; margin-bottom: 18px; }
        .category-hero h1 span { color: #fbbf24; }
        .category-hero p.lead { font-size: 18px; color: rgba(255,255,255,.85); max-width: 640px; margin: 0 auto 36px; }
        .category-hero .hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
        .hero-wave { position: absolute; bottom: -2px; left: 0; right: 0; z-index: 2; }

        /* Breadcrumb */
        .breadcrumb-wrap { background: var(--bg-soft); border-bottom: 1px solid var(--border); padding: 12px 0; }
        .breadcrumb-wrap .breadcrumb { margin-bottom: 0; font-size: 14px; }
        .breadcrumb-item a { color: var(--text-light); }
        .breadcrumb-item a:hover { color: var(--primary); }
        .breadcrumb-item.active { color: var(--primary); font-weight: 600; }

        /* Service Category Cards */
        .service-cats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
        .service-cat-card {
            background: #fff; border: 1px solid var(--border);
            border-radius: var(--radius-lg); padding: 32px 24px;
            text-align: center; transition: all .35s ease; position: relative; overflow: hidden;
        }
        .service-cat-card::before {
            content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0; transition: opacity .35s;
        }
        .service-cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .service-cat-card:hover::before { opacity: 1; }
        .service-cat-card .cat-icon {
            width: 72px; height: 72px; margin: 0 auto 20px;
            background: var(--primary-light); color: var(--primary);
            border-radius: 20px; display: flex; align-items: center; justify-content: center;
            font-size: 30px; transition: all .35s;
        }
        .service-cat-card:hover .cat-icon { background: var(--primary); color: #fff; transform: scale(1.05) rotate(-4deg); }
        .service-cat-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
        .service-cat-card p { font-size: 14px; color: var(--text-light); line-height: 1.6; margin-bottom: 16px; }
        .service-cat-card a.service-link { font-size: 14px; font-weight: 700; color: var(--primary); }

        /* Service Process */
        .process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; }
        .process-grid::before {
            content: ""; position: absolute; top: 40px; left: 10%; right: 10%;
            border-top: 2px dashed var(--border); z-index: 0;
        }
        .process-step { text-align: center; position: relative; z-index: 1; }
        .process-step .step-num {
            width: 80px; height: 80px; margin: 0 auto 20px;
            background: linear-gradient(135deg, var(--primary) 0%, #60a5fa 100%);
            color: #fff; border-radius: 50%; display: flex; align-items: center;
            justify-content: center; font-size: 32px; font-weight: 800;
            box-shadow: 0 8px 24px rgba(43,109,232,.3); position: relative;
        }
        .process-step .step-num::after {
            content: ""; position: absolute; inset: -6px; border-radius: 50%;
            border: 2px solid rgba(43,109,232,.2); animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0% { transform: scale(.85); opacity: 1; }
            70% { transform: scale(1.25); opacity: 0; }
            100% { opacity: 0; }
        }
        .process-step h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
        .process-step p { font-size: 14px; color: var(--text-light); line-height: 1.6; }

        /* Content Cards */
        .service-content-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .content-card {
            background: #fff; border-radius: var(--radius-lg); overflow: hidden;
            border: 1px solid var(--border); transition: all .35s ease;
        }
        .content-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .content-card .card-img { position: relative; overflow: hidden; aspect-ratio: 16 / 9; }
        .content-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
        .content-card:hover .card-img img { transform: scale(1.05); }
        .content-card .card-img .tag {
            position: absolute; top: 14px; left: 14px;
            background: rgba(255,255,255,.92); color: var(--primary);
            padding: 4px 14px; border-radius: 999px; font-size: 12px;
            font-weight: 700; box-shadow: var(--shadow-sm);
        }
        .content-card .card-body { padding: 24px; }
        .content-card .card-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; line-height: 1.4; }
        .content-card .card-body h3 a:hover { color: var(--primary); }
        .content-card .card-body p { font-size: 14px; color: var(--text-light); line-height: 1.6; }
        .content-card .card-meta { display: flex; gap: 16px; padding-top: 14px; border-top: 1px solid var(--border); margin-top: 16px; }
        .content-card .card-meta span { font-size: 13px; color: var(--text-light); }
        .content-card .card-meta i { color: var(--primary); margin-right: 4px; }

        /* Feature List */
        .service-feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
        .feature-media { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
        .feature-media img { width: 100%; height: auto; }
        .feature-media .media-badge {
            position: absolute; bottom: 20px; right: 20px;
            background: rgba(255,255,255,.92); backdrop-filter: blur(8px);
            padding: 12px 20px; border-radius: 12px; box-shadow: var(--shadow);
        }
        .feature-media .media-badge strong { display: block; font-size: 24px; color: var(--primary); }
        .feature-media .media-badge span { font-size: 12px; color: var(--text-light); }
        .feature-list { list-style: none; margin: 0; padding: 0; }
        .feature-list li { display: flex; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--border); }
        .feature-list li:last-child { border-bottom: none; }
        .feature-list .feature-icon { flex-shrink: 0; width: 48px; height: 48px; background: var(--primary-light); color: var(--primary); border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 20px; }
        .feature-list h4 { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
        .feature-list p { font-size: 14px; color: var(--text-light); margin-bottom: 0; }

        /* Stats */
        .stats-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
        .stat-item { text-align: center; padding: 20px; }
        .stat-item .stat-num { font-size: 44px; font-weight: 800; color: var(--primary); line-height: 1; }
        .stat-item .stat-label { font-size: 14px; color: var(--text-light); margin-top: 8px; }
        .stat-item .stat-num::after { content: attr(data-suffix); }

        /* FAQ */
        .faq-wrap { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: #fff; border-radius: var(--radius);
            border: 1px solid var(--border); margin-bottom: 12px;
            transition: box-shadow .3s;
        }
        .faq-item:hover { box-shadow: var(--shadow-sm); }
        .faq-item .faq-q { padding: 20px 24px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
        .faq-item .faq-q h3 { font-size: 16px; font-weight: 600; margin: 0; flex: 1; }
        .faq-item .faq-q i { color: var(--primary); transition: transform .3s; }
        .faq-item.open .faq-q i { transform: rotate(45deg); }
        .faq-item .faq-a { overflow: hidden; max-height: 0; transition: max-height .35s ease; }
        .faq-item.open .faq-a { max-height: 300px; }
        .faq-item .faq-a p { padding: 0 24px 20px; font-size: 15px; color: var(--text-light); line-height: 1.8; }

        /* CTA */
        .cta-section {
            position: relative; background: var(--bg-dark); border-radius: var(--radius-lg);
            padding: 60px 80px; text-align: center; overflow: hidden;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover; background-position: center;
        }
        .cta-section::before { content: ""; position: absolute; inset: 0; background: rgba(15,23,42,.82); }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { font-size: 32px; font-weight: 800; color: #fff; margin-bottom: 14px; }
        .cta-section p { color: rgba(255,255,255,.85); font-size: 16px; margin-bottom: 30px; }
        .cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
        .btn-white {
            background: #fff; color: var(--text); border: none; font-weight: 700;
            padding: 12px 26px; border-radius: 10px; font-size: 15px; transition: all .3s;
        }
        .btn-white:hover { background: #f1f5f9; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,.2); color: var(--text); }

        /* Footer */
        .site-footer { background: var(--bg-dark); color: #94a3b8; padding: 60px 0 0; }
        .site-footer .footer-brand { font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 16px; display: flex; align-items: center; gap: 10px; }
        .site-footer .footer-brand i { color: var(--accent); font-size: 22px; }
        .site-footer .footer-desc { font-size: 14px; color: #94a3b8; max-width: 320px; line-height: 1.7; }
        .site-footer h4 { font-size: 15px; font-weight: 700; color: #e2e8f0; margin-bottom: 20px; }
        .site-footer ul { list-style: none; padding: 0; margin: 0; }
        .site-footer ul li { margin-bottom: 10px; }
        .site-footer ul li a { color: #94a3b8; font-size: 14px; transition: color .3s; }
        .site-footer ul li a:hover { color: #fbbf24; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,.08); margin-top: 40px; padding: 20px 0; text-align: center; font-size: 13px; color: #64748b; }

        /* Responsive */
        @media (max-width: 1024px) {
            .service-cats-grid { grid-template-columns: repeat(2, 1fr); }
            .process-grid { grid-template-columns: repeat(2, 1fr); gap: 40px 24px; }
            .process-grid::before { display: none; }
            .service-content-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-band { grid-template-columns: repeat(2, 1fr); }
            .service-feature-row { grid-template-columns: 1fr; gap: 40px; }
        }
        @media (max-width: 768px) {
            :root { --space-section: 56px; }
            .category-hero { padding: 90px 0 80px; }
            .category-hero h1 { font-size: 34px; }
            .category-hero p.lead { font-size: 16px; }
            .section-head h2 { font-size: 26px; }
            .cta-section { padding: 40px 24px; }
            .cta-section h2 { font-size: 26px; }
            .site-footer .row > div { margin-bottom: 24px; }
            .service-cats-grid, .service-content-grid { gap: 20px; }
        }
        @media (max-width: 520px) {
            .container { padding-left: 16px; padding-right: 16px; }
            .service-cats-grid { grid-template-columns: 1fr; }
            .service-content-grid { grid-template-columns: 1fr; }
            .process-grid { grid-template-columns: 1fr; }
            .stats-band { grid-template-columns: 1fr; }
            .category-hero h1 { font-size: 28px; }
            .category-hero .hero-actions { flex-direction: column; align-items: center; }
            .btn-primary-custom, .btn-outline-custom { width: 100%; justify-content: center; }
            .site-header .navbar-nav .nav-link { padding: 10px 8px; }
            .site-header .nav-cta { margin-left: 0; margin-top: 6px; }
            .site-header .navbar-collapse { padding: 12px 0; }
            .cta-actions { flex-direction: column; }
            .cta-actions .btn-white { width: 100%; justify-content: center; }
        }
        @media (max-width: 991px) {
            .site-header .navbar-collapse { background: #fff; padding: 16px; border-radius: 16px; box-shadow: var(--shadow); margin-top: 8px; }
            .site-header .nav-cta { margin-top: 10px; }
            .site-header .nb-container { position: relative; }
            .navbar-collapse { position: absolute; top: 100%; left: 0; right: 0; z-index: 1050; }
        }
        .navbar-collapse.show { max-height: 80vh; overflow-y: auto; }
        .filter-tag { display: inline-block; padding: 6px 16px; border-radius: 999px; background: var(--bg-soft); color: var(--text-light); font-size: 14px; font-weight: 600; cursor: pointer; transition: all .3s; border: 1px solid var(--border); }
        .filter-tag:hover { background: var(--primary-light); color: var(--primary); border-color: transparent; }
        .filter-tag.active { background: var(--primary); color: #fff; border-color: transparent; }

/* roulang page: category1 */
:root {
            --primary: #0f2f4d;
            --primary-light: #1b4970;
            --accent: #e2603f;
            --accent-dark: #c4482b;
            --teal: #1f8a8c;
            --bg: #f8f7f4;
            --bg-alt: #edf1f5;
            --card-bg: #ffffff;
            --text: #222b36;
            --text-soft: #5b6b7c;
            --text-mute: #8b98a6;
            --border: #e4e8ed;
            --radius: 18px;
            --radius-sm: 10px;
            --shadow: 0 20px 50px rgba(15, 47, 77, .12);
            --shadow-sm: 0 6px 18px rgba(15, 47, 77, .07);
            --section-space: 100px;
            --font-sans: "Inter", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease;
        }
        a:hover {
            color: var(--accent);
        }
        button {
            border: none;
            outline: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .btn {
            border-radius: 100px;
            font-weight: 600;
            letter-spacing: .01em;
            transition: all .3s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .btn:focus {
            box-shadow: 0 0 0 3px rgba(226, 96, 63, .25);
        }
        .btn-accent {
            background: var(--accent);
            border: 1px solid var(--accent);
            color: #fff;
            padding: .6rem 1.5rem;
        }
        .btn-accent:hover,
        .btn-accent:active {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 22px rgba(226, 96, 63, .32);
        }
        .btn-outline-light {
            border: 1px solid rgba(255, 255, 255, .6);
            color: #fff;
            padding: .6rem 1.5rem;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .15);
            color: #fff;
            border-color: #fff;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1200;
            background: rgba(255, 255, 255, .86);
            -webkit-backdrop-filter: blur(16px);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, .4);
            box-shadow: 0 6px 24px rgba(15, 47, 77, .06);
        }
        .site-header .navbar {
            padding: 13px 0;
        }
        .navbar-brand {
            font-size: 1.18rem;
            font-weight: 800;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -.01em;
        }
        .navbar-brand i {
            width: 36px;
            height: 36px;
            border-radius: 11px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            box-shadow: 0 8px 16px rgba(15, 47, 77, .18);
        }
        .navbar-toggler {
            border: none;
            color: var(--primary);
            font-size: 1.4rem;
            padding: 6px 10px;
            border-radius: 8px;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(15, 47, 77, .12);
            outline: none;
        }
        .main-menu .nav-link {
            font-weight: 500;
            color: var(--text);
            padding: 8px 18px;
            border-radius: 100px;
            transition: all .25s ease;
        }
        .main-menu .nav-link:hover {
            color: var(--accent);
            background: rgba(226, 96, 63, .06);
        }
        .main-menu .nav-link.active {
            color: var(--accent);
            background: rgba(226, 96, 63, .1);
            font-weight: 600;
        }
        .nav-cta .btn-accent {
            padding: .42rem 1.25rem;
            font-size: .92rem;
        }

        .page-hero {
            position: relative;
            color: #fff;
            padding: 170px 0 120px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(8, 29, 48, .94) 12%, rgba(8, 29, 48, .74) 52%, rgba(26, 51, 74, .32) 100%);
            z-index: 1;
        }
        .page-hero::after {
            content: "";
            position: absolute;
            top: -80px;
            right: -60px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, .18), transparent 68%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }
        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: .95rem;
            color: rgba(255, 255, 255, .72);
            margin-bottom: 18px;
        }
        .hero-breadcrumb a {
            color: rgba(255, 255, 255, .8);
            transition: color .2s;
        }
        .hero-breadcrumb a:hover {
            color: #fff;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .2);
            padding: 6px 16px;
            border-radius: 100px;
            font-size: .87rem;
            color: #fff;
            margin-bottom: 18px;
            backdrop-filter: blur(6px);
        }
        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.5rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -.02em;
            margin-bottom: 18px;
        }
        .hero-sub {
            font-size: 1.08rem;
            color: rgba(255, 255, 255, .86);
            max-width: 580px;
            line-height: 1.8;
        }
        .hero-wave {
            position: absolute;
            left: 0;
            right: 0;
            bottom: -1px;
            z-index: 3;
            line-height: 0;
        }
        .hero-wave svg {
            width: 100%;
            height: 90px;
            display: block;
        }

        .section {
            padding: var(--section-space) 0;
        }
        .section-head {
            max-width: 720px;
            margin: 0 auto 48px;
            text-align: center;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(226, 96, 63, .09);
            color: var(--accent);
            padding: 6px 16px;
            border-radius: 100px;
            font-size: .85rem;
            font-weight: 600;
            letter-spacing: .02em;
        }
        .section-title {
            font-size: clamp(1.85rem, 3.4vw, 2.6rem);
            font-weight: 800;
            color: var(--primary);
            line-height: 1.25;
            letter-spacing: -.01em;
            margin-top: 14px;
        }
        .section-desc {
            color: var(--text-soft);
            font-size: 1.05rem;
            margin-top: 12px;
            line-height: 1.8;
        }
        .section-head.light .section-title {
            color: #fff;
        }
        .section-head.light .section-desc {
            color: rgba(255, 255, 255, .7);
        }

        .intro-section {
            background: var(--bg);
            padding-top: calc(var(--section-space) - 30px);
        }
        .intro-media {
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transform: rotate(-1deg);
        }
        .intro-media img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .intro-media:hover img {
            transform: scale(1.03);
        }
        .intro-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 47, 77, .3), transparent 60%);
        }
        .intro-content {
            padding-left: 20px;
        }
        .intro-label {
            color: var(--accent);
            font-weight: 600;
            letter-spacing: .04em;
            font-size: .92rem;
        }
        .intro-title {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
            margin: 10px 0 16px;
        }
        .intro-text {
            color: var(--text-soft);
            font-size: 1.02rem;
            line-height: 1.85;
            margin-bottom: 22px;
        }
        .intro-list {
            margin-top: 8px;
        }
        .intro-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 16px 18px;
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            transition: transform .25s, box-shadow .25s;
        }
        .intro-list li:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow);
        }
        .intro-list i {
            color: var(--accent);
            font-size: 1.1rem;
            margin-top: 4px;
        }
        .intro-list strong {
            display: block;
            color: var(--text);
            font-size: 1rem;
        }
        .intro-list span {
            color: var(--text-soft);
            font-size: .94rem;
            line-height: 1.6;
        }

        .news-section {
            background: var(--bg);
            padding-top: 0;
        }
        .news-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: transform .35s ease, box-shadow .35s ease, border-color .35s;
        }
        .news-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow);
            border-color: rgba(226, 96, 63, .3);
        }
        .news-card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-alt);
        }
        .news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .news-card:hover .news-card-img img {
            transform: scale(1.06);
        }
        .news-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(15, 47, 77, .35));
        }
        .news-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(255, 255, 255, .92);
            color: var(--accent);
            font-size: .8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 100px;
            backdrop-filter: blur(6px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, .08);
        }
        .news-card-body {
            padding: 22px 22px 26px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-mute);
            font-size: .86rem;
            margin-bottom: 10px;
        }
        .news-meta i {
            font-size: .8rem;
            color: var(--accent);
        }
        .news-title {
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 10px;
            transition: color .25s;
        }
        .news-card:hover .news-title {
            color: var(--accent);
        }
        .news-excerpt {
            font-size: .94rem;
            color: var(--text-soft);
            line-height: 1.7;
            flex: 1;
        }
        .news-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 18px;
            color: var(--primary);
            font-weight: 600;
            font-size: .94rem;
        }
        .news-link i {
            transition: transform .3s;
        }
        .news-card:hover .news-link i {
            transform: translateX(4px);
        }

        .journey-section {
            position: relative;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            color: #fff;
            padding: var(--section-space) 0;
            overflow: hidden;
        }
        .journey-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(8, 28, 47, .95), rgba(18, 49, 76, .88));
        }
        .journey-section .container {
            position: relative;
            z-index: 2;
        }
        .timeline {
            position: relative;
            max-width: 820px;
            margin: 20px auto 0;
            padding-left: 60px;
        }
        .timeline::before {
            content: "";
            position: absolute;
            left: 22px;
            top: 12px;
            bottom: 12px;
            width: 2px;
            background: linear-gradient(to bottom, rgba(255, 255, 255, .5), rgba(255, 255, 255, .1));
        }
        .timeline-item {
            position: relative;
            padding: 0 0 40px 36px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-dot {
            position: absolute;
            left: -46px;
            top: 6px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .1);
            border: 2px solid rgba(255, 255, 255, .35);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: #fff;
            box-shadow: 0 8px 20px rgba(0, 0, 0, .18);
        }
        .timeline-dot i {
            font-size: 16px;
        }
        .timeline-phase {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: .82rem;
            font-weight: 600;
            padding: 3px 14px;
            border-radius: 100px;
            letter-spacing: .03em;
        }
        .timeline-title {
            font-size: 1.35rem;
            font-weight: 700;
            margin: 10px 0 8px;
            color: #fff;
        }
        .timeline-desc {
            color: rgba(255, 255, 255, .75);
            font-size: .98rem;
            line-height: 1.8;
        }

        .stats-section {
            background: var(--bg-alt);
        }
        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            height: 100%;
            transition: transform .3s ease, box-shadow .3s ease;
        }
        .stat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
        }
        .stat-icon {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            background: rgba(226, 96, 63, .1);
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 16px;
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            letter-spacing: -.02em;
        }
        .stat-label {
            color: var(--text-soft);
            font-size: .94rem;
            margin-top: 8px;
        }

        .tags-section {
            background: var(--bg);
        }
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            max-width: 860px;
            margin: 0 auto;
        }
        .tag-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 100px;
            padding: 12px 24px;
            font-size: .98rem;
            font-weight: 500;
            color: var(--text);
            box-shadow: var(--shadow-sm);
            transition: all .3s ease;
        }
        .tag-link i {
            color: var(--accent);
            font-size: .85rem;
        }
        .tag-link:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-3px);
            box-shadow: 0 12px 24px rgba(15, 47, 77, .18);
        }
        .tag-link:hover i {
            color: #fff;
        }

        .faq-section {
            background: var(--bg-alt);
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .accordion-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 16px !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .accordion-button {
            background: var(--card-bg);
            color: var(--text);
            font-weight: 600;
            font-size: 1.04rem;
            padding: 20px 24px;
            border: none;
            box-shadow: none;
        }
        .accordion-button:not(.collapsed) {
            background: rgba(226, 96, 63, .05);
            color: var(--primary);
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(226, 96, 63, .15);
            border-radius: 16px;
        }
        .accordion-button::after {
            flex-shrink: 0;
            width: 1.1rem;
            height: 1.1rem;
            background-size: 1.1rem;
            transition: transform .3s ease;
            filter: none;
            opacity: .65;
        }
        .accordion-button:not(.collapsed)::after {
            filter: invert(48%) sepia(68%) saturate(1229%) hue-rotate(-10deg) brightness(94%) contrast(91%);
        }
        .accordion-body {
            padding: 16px 24px 24px;
            color: var(--text-soft);
            font-size: .98rem;
            line-height: 1.8;
            border-top: 1px solid var(--border);
        }

        .cta-section {
            background: var(--bg);
        }
        .cta-box {
            position: relative;
            background: linear-gradient(135deg, #0f2f4d, #1d5274);
            border-radius: 28px;
            padding: 64px 48px;
            color: #fff;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .cta-box::before {
            content: "";
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, .16), transparent 65%);
        }
        .cta-box::after {
            content: "";
            position: absolute;
            bottom: -60px;
            left: -40px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(226, 96, 63, .3), transparent 60%);
        }
        .cta-box .container {
            position: relative;
            z-index: 2;
        }
        .cta-label {
            color: #f7c8a9;
            font-weight: 600;
            letter-spacing: .05em;
            font-size: .92rem;
        }
        .cta-title {
            font-size: clamp(1.8rem, 3.2vw, 2.6rem);
            font-weight: 800;
            margin: 10px 0 16px;
            line-height: 1.3;
        }
        .cta-desc {
            color: rgba(255, 255, 255, .78);
            font-size: 1.02rem;
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 30px;
        }
        .cta-form {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            max-width: 560px;
        }
        .cta-form .form-control {
            flex: 1;
            min-width: 240px;
            border: 1px solid rgba(255, 255, 255, .35);
            background: rgba(255, 255, 255, .13);
            color: #fff;
            border-radius: 100px;
            padding: 14px 22px;
            font-size: .98rem;
            backdrop-filter: blur(4px);
        }
        .cta-form .form-control::placeholder {
            color: rgba(255, 255, 255, .6);
        }
        .cta-form .form-control:focus {
            background: rgba(255, 255, 255, .2);
            border-color: rgba(255, 255, 255, .7);
            box-shadow: 0 0 0 3px rgba(255, 255, 255, .15);
            color: #fff;
            outline: none;
        }
        .cta-form .btn-accent {
            padding: 14px 32px;
            font-size: 1rem;
        }
        .cta-success {
            color: #a9e3b5;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 14px 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .cta-note {
            color: rgba(255, 255, 255, .55);
            font-size: .87rem;
            margin-top: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .cta-note i {
            font-size: .85rem;
        }

        .site-footer {
            background: #0b2033;
            color: #9db1c3;
            padding: 70px 0 24px;
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer-brand i {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--accent);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }
        .footer-desc {
            color: #88a0b4;
            font-size: .96rem;
            line-height: 1.8;
            max-width: 320px;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul li a {
            color: #9db1c3;
            font-size: .94rem;
            transition: color .25s, padding-left .25s;
        }
        .site-footer ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            margin-top: 50px;
            padding-top: 22px;
            text-align: center;
            color: #718a9e;
            font-size: .88rem;
        }

        @media (max-width: 991.98px) {
            :root {
                --section-space: 76px;
            }
            .navbar-collapse {
                background: #fff;
                border-radius: 16px;
                padding: 16px;
                margin-top: 12px;
                box-shadow: var(--shadow);
                border: 1px solid var(--border);
            }
            .main-menu .nav-link {
                padding: 10px 18px;
                border-radius: 10px;
            }
            .nav-cta {
                margin-top: 10px;
            }
            .intro-media img {
                height: 340px;
            }
            .intro-content {
                padding-left: 0;
                margin-top: 30px;
            }
            .timeline {
                margin-left: 10px;
            }
            .cta-box {
                padding: 48px 30px;
            }
        }

        @media (max-width: 767.98px) {
            .page-hero {
                padding: 140px 0 100px;
            }
            .hero-wave svg {
                height: 50px;
            }
            .section {
                padding: 60px 0;
            }
            .news-card-img {
                aspect-ratio: 16 / 9;
            }
            .timeline::before {
                left: 14px;
            }
            .timeline {
                padding-left: 34px;
            }
            .timeline-item {
                padding-left: 24px;
            }
            .timeline-dot {
                left: -26px;
                width: 34px;
                height: 34px;
                font-size: 13px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .cta-box {
                padding: 40px 22px;
                border-radius: 20px;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-form .form-control,
            .cta-form .btn-accent {
                width: 100%;
            }
            .tags-cloud {
                gap: 10px;
            }
            .tag-link {
                padding: 9px 16px;
                font-size: .9rem;
            }
        }

        @media (max-width: 520px) {
            .page-hero {
                padding: 120px 0 80px;
            }
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-sub {
                font-size: .98rem;
            }
            .intro-media img {
                height: 260px;
            }
            .section-title {
                font-size: 1.55rem;
            }
            .section-desc {
                font-size: .95rem;
            }
            .news-card-body {
                padding: 18px 18px 22px;
            }
            .timeline-title {
                font-size: 1.1rem;
            }
            .timeline-desc {
                font-size: .92rem;
            }
            .stat-card {
                padding: 24px 14px;
            }
            .stat-number {
                font-size: 1.7rem;
            }
            .accordion-button {
                font-size: .96rem;
                padding: 16px 18px;
            }
            .footer-bottom {
                font-size: .8rem;
            }
        }