/* roulang page: index */
:root {
    --primary: #1a56db;
    --primary-dark: #1e3a8a;
    --primary-light: #3b82f6;
    --primary-lighter: #eff6ff;
    --accent: #d97706;
    --accent-light: #fbbf24;
    --dark: #0f172a;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-600: #64748b;
    --gray-700: #334155;
    --gray-900: #1e293b;
    --white: #ffffff;
    --radius: 18px;
    --radius-sm: 10px;
    --radius-lg: 28px;
    --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.06);
    --shadow: 0 10px 36px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 20px 60px rgba(15, 23, 42, 0.12);
    --transition: all .3s cubic-bezier(.4, 0, .2, 1);
}
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--gray-700);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}
a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
button, input {
    font-family: inherit;
}
.container {
    max-width: 1220px;
}
.badge {
    font-weight: 500;
    letter-spacing: .02em;
    padding: .42em .9em;
    border-radius: 999px;
    font-size: .8rem;
}
.btn {
    border-radius: 999px;
    padding: 10px 26px;
    font-weight: 600;
    font-size: .95rem;
    border: none;
    transition: var(--transition);
}
.btn:hover {
    transform: translateY(-2px);
}
.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 16px rgba(26, 86, 219, .25);
}
.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 8px 28px rgba(26, 86, 219, .35);
}
.btn-outline {
    background: transparent;
    border: 2px solid var(--gray-200);
    color: var(--gray-700);
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-lighter);
}
.btn-accent {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 16px rgba(217, 119, 6, .25);
}
.btn-accent:hover {
    background: var(--accent-light);
    color: var(--gray-900);
}
.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1.25;
    letter-spacing: -0.02em;
}
.section-subtitle {
    font-size: 1.05rem;
    color: var(--gray-600);
    max-width: 640px;
    margin: 12px auto 0;
}
.section-header {
    text-align: center;
    margin-bottom: 48px;
}
.section-header .eyebrow {
    display: inline-block;
    background: var(--primary-lighter);
    color: var(--primary);
    font-weight: 600;
    font-size: .85rem;
    padding: 6px 20px;
    border-radius: 999px;
    margin-bottom: 14px;
}
.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);
    box-shadow: 0 4px 24px rgba(15, 23, 42, .04);
}
.site-header .navbar {
    padding-top: 14px;
    padding-bottom: 14px;
}
.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--gray-900);
}
.navbar-brand:hover {
    color: var(--primary);
}
.brand-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    box-shadow: 0 4px 12px rgba(26, 86, 219, .3);
}
.navbar-nav {
    gap: 4px;
}
.navbar-nav .nav-link {
    padding: 8px 18px;
    font-weight: 500;
    color: var(--gray-600);
    border-radius: 999px;
    font-size: .95rem;
    position: relative;
}
.navbar-nav .nav-link:hover {
    color: var(--primary);
    background: var(--primary-lighter);
}
.navbar-nav .nav-link.active {
    color: var(--primary);
    background: var(--primary-lighter);
    font-weight: 600;
}
.nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}
.search-box {
    display: flex;
    align-items: center;
    background: var(--gray-100);
    border-radius: 999px;
    padding: 7px 16px;
    border: 1px solid transparent;
    transition: var(--transition);
    gap: 8px;
}
.search-box:focus-within {
    background: #fff;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(26, 86, 219, .1);
}
.search-box input {
    border: none;
    outline: none;
    background: transparent;
    font-size: .9rem;
    color: var(--gray-700);
    width: 90px;
    transition: width .3s ease;
}
.search-box input:focus {
    width: 130px;
}
.search-box button {
    border: none;
    background: none;
    color: var(--gray-600);
    cursor: pointer;
    font-size: .9rem;
}
.navbar-toggler {
    border: none;
    padding: 8px;
}
.navbar-toggler:focus {
    box-shadow: none;
}
.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(30,41,59,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
.hero {
    position: relative;
    min-height: 620px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 60%, #1a56db 100%);
    overflow: hidden;
    padding: 80px 0;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    opacity: .35;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(15, 23, 42, .9) 0%, rgba(30, 58, 138, .55) 60%, rgba(26, 86, 219, .25) 100%);
}
.hero-content {
    position: relative;
    z-index: 2;
    color: #fff;
    max-width: 660px;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .18);
    backdrop-filter: blur(8px);
    padding: 8px 20px;
    border-radius: 999px;
    font-size: .85rem;
    font-weight: 500;
    margin-bottom: 24px;
}
.hero-badge i {
    color: var(--accent-light);
}
.hero h1 {
    font-size: 3.4rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 20px;
}
.hero h1 .highlight {
    color: var(--accent-light);
}
.hero p {
    font-size: 1.15rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, .85);
    margin-bottom: 36px;
}
.hero-buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}
.hero-buttons .btn {
    padding: 14px 34px;
    font-size: 1rem;
}
.hero-stats {
    display: flex;
    gap: 28px;
    margin-top: 52px;
    flex-wrap: wrap;
}
.hero-stat-item .num {
    font-size: 1.8rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
}
.hero-stat-item .label {
    font-size: .85rem;
    color: rgba(255, 255, 255, .7);
}
.metrics-section {
    background: var(--gray-50);
    padding: 80px 0;
    margin-top: -30px;
    position: relative;
    z-index: 3;
}
.metrics-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-100);
    position: relative;
    overflow: hidden;
}
.metrics-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: var(--transition);
}
.metrics-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.metrics-card:hover::before {
    opacity: 1;
}
.metrics-card .icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: var(--primary-lighter);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: var(--primary);
    font-size: 22px;
}
.metrics-card .num {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1.2;
}
.metrics-card .label {
    color: var(--gray-600);
    font-size: .9rem;
    margin-top: 4px;
}
.categories-section {
    padding: 90px 0;
    background: #fff;
}
.category-card {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
    border: 1px solid var(--gray-100);
    position: relative;
}
.category-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    background: #fff;
}
.category-card .card-img-wrap {
    height: 200px;
    overflow: hidden;
    position: relative;
}
.category-card .card-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}
.category-card:hover .card-img-wrap img {
    transform: scale(1.05);
}
.category-card .card-img-wrap::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(15, 23, 42, .35));
}
.category-card .card-body {
    padding: 30px 26px;
}
.category-card .card-tag {
    display: inline-block;
    background: var(--primary-lighter);
    color: var(--primary);
    border-radius: 999px;
    padding: 4px 14px;
    font-size: .78rem;
    font-weight: 600;
    margin-bottom: 12px;
}
.category-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 10px;
}
.category-card p {
    color: var(--gray-600);
    font-size: .93rem;
    margin-bottom: 18px;
}
.category-card .card-link {
    color: var(--primary);
    font-weight: 600;
    font-size: .9rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.category-card .card-link i {
    transition: transform .3s;
}
.category-card:hover .card-link i {
    transform: translateX(4px);
}
.features-section {
    padding: 90px 0;
    background: var(--gray-50);
}
.feature-item {
    background: #fff;
    border-radius: var(--radius);
    padding: 32px 26px;
    border: 1px solid var(--gray-100);
    transition: var(--transition);
    height: 100%;
}
.feature-item:hover {
    box-shadow: var(--shadow);
    transform: translateY(-4px);
    border-color: var(--primary-lighter);
}
.feature-item .feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 18px;
    background: var(--primary-lighter);
    color: var(--primary);
}
.feature-item:nth-child(2) .feature-icon { background: #fefce8; color: var(--accent); }
.feature-item:nth-child(3) .feature-icon { background: #ecfeff; color: #0891b2; }
.feature-item:nth-child(4) .feature-icon { background: #f5f3ff; color: #7c3aed; }
.feature-item:nth-child(5) .feature-icon { background: #fff1f2; color: #e11d48; }
.feature-item:nth-child(6) .feature-icon { background: #ecfdf5; color: #059669; }
.feature-item h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}
.feature-item p {
    font-size: .9rem;
    color: var(--gray-600);
    margin: 0;
}
.news-section {
    padding: 90px 0;
    background: #fff;
}
.news-card {
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--gray-100);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.news-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-5px);
    border-color: var(--gray-200);
}
.news-thumb {
    position: relative;
    height: 190px;
    overflow: hidden;
}
.news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s;
}
.news-card:hover .news-thumb img {
    transform: scale(1.04);
}
.news-cat {
    position: absolute;
    top: 14px;
    left: 14px;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(6px);
    border-radius: 999px;
    padding: 5px 14px;
    font-size: .78rem;
    font-weight: 600;
    color: var(--primary);
}
.news-body {
    padding: 24px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}
.news-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1.5;
    margin-bottom: 10px;
}
.news-body h3 a {
    color: var(--gray-900);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-body h3 a:hover {
    color: var(--primary);
}
.news-body p {
    font-size: .9rem;
    color: var(--gray-600);
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex-grow: 1;
}
.news-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    border-top: 1px solid var(--gray-100);
    font-size: .82rem;
    color: var(--gray-600);
}
.news-meta a {
    color: var(--primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}
.news-meta a:hover {
    gap: 8px;
}
.empty-state {
    background: var(--gray-50);
    border-radius: var(--radius);
    padding: 48px 24px;
    text-align: center;
    color: var(--gray-600);
    font-size: 1rem;
    border: 1px dashed var(--gray-300);
}
.process-section {
    padding: 90px 0;
    background: linear-gradient(180deg, var(--gray-50) 0%, #fff 100%);
}
.process-step {
    text-align: center;
    padding: 30px 20px;
    position: relative;
}
.process-step .step-num {
    position: absolute;
    top: 0;
    right: 20%;
    width: 30px;
    height: 30px;
    background: var(--accent);
    color: #fff;
    border-radius: 50%;
    font-size: .8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(217, 119, 6, .3);
}
.process-step .step-icon {
    width: 68px;
    height: 68px;
    border-radius: 20px;
    background: var(--primary-lighter);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    color: var(--primary);
    font-size: 26px;
    transition: var(--transition);
}
.process-step:hover .step-icon {
    transform: scale(1.06);
    box-shadow: 0 8px 24px rgba(26, 86, 219, .18);
}
.process-step h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 6px;
}
.process-step p {
    font-size: .88rem;
    color: var(--gray-600);
    margin: 0;
}
.process-arrow {
    position: absolute;
    top: 50%;
    right: -4%;
    transform: translateY(-50%);
    color: var(--gray-300);
    font-size: 20px;
    z-index: 2;
}
.showcase-section {
    padding: 90px 0;
    background: linear-gradient(135deg, #0f172a, #1e3a8a);
    position: relative;
    overflow: hidden;
}
.showcase-section::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(26, 86, 219, .25), transparent 70%);
}
.showcase-section .container {
    position: relative;
    z-index: 2;
}
.showcase-content {
    color: #fff;
}
.showcase-content .eyebrow {
    display: inline-block;
    background: rgba(255, 255, 255, .1);
    border: 1px solid rgba(255, 255, 255, .15);
    color: var(--accent-light);
    padding: 6px 18px;
    border-radius: 999px;
    font-size: .85rem;
    font-weight: 600;
    margin-bottom: 16px;
}
.showcase-content h2 {
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 18px;
}
.showcase-content p {
    color: rgba(255, 255, 255, .8);
    margin-bottom: 28px;
    line-height: 1.8;
}
.showcase-list {
    list-style: none;
    padding: 0;
    margin: 0 0 32px;
}
.showcase-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    color: rgba(255, 255, 255, .88);
}
.showcase-list li i {
    color: var(--accent-light);
}
.showcase-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .3);
    border: 1px solid rgba(255, 255, 255, .1);
}
.showcase-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 360px;
}
.faq-section {
    padding: 90px 0;
    background: var(--gray-50);
}
.faq-section .accordion-item {
    border: 1px solid var(--gray-200) !important;
    border-radius: var(--radius-sm) !important;
    margin-bottom: 14px;
    overflow: hidden;
    background: #fff;
    box-shadow: var(--shadow-sm);
}
.faq-section .accordion-button {
    padding: 20px 26px;
    font-weight: 600;
    font-size: 1rem;
    color: var(--gray-900);
    background: #fff !important;
    box-shadow: none !important;
}
.faq-section .accordion-button:not(.collapsed) {
    color: var(--primary);
    background: var(--primary-lighter) !important;
}
.faq-section .accordion-button:focus {
    box-shadow: none;
}
.faq-section .accordion-body {
    padding: 6px 26px 22px;
    color: var(--gray-600);
    font-size: .95rem;
    line-height: 1.8;
}
.cta-section {
    padding: 90px 0;
    background: #fff;
}
.cta-box {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    padding: 70px 50px;
    text-align: center;
    color: #fff;
    box-shadow: 0 20px 60px rgba(26, 86, 219, .3);
}
.cta-box::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 220px;
    height: 220px;
    background: radial-gradient(circle, rgba(255, 255, 255, .1), transparent 70%);
}
.cta-box::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: 10%;
    width: 260px;
    height: 260px;
    background: radial-gradient(circle, rgba(255, 255, 255, .06), transparent 70%);
}
.cta-box h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 14px;
    position: relative;
    z-index: 1;
}
.cta-box p {
    color: rgba(255, 255, 255, .8);
    max-width: 600px;
    margin: 0 auto 30px;
    position: relative;
    z-index: 1;
}
.cta-box .btn {
    position: relative;
    z-index: 1;
    background: #fff;
    color: var(--primary);
    box-shadow: 0 8px 24px rgba(0, 0, 0, .15);
}
.cta-box .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, .2);
    color: var(--primary-dark);
}
.site-footer {
    background: var(--dark);
    color: rgba(255, 255, 255, .75);
    padding: 80px 0 30px;
}
.site-footer .footer-brand {
    font-size: 1.3rem;
    font-weight: 800;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}
.site-footer .footer-desc {
    font-size: .92rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, .6);
    max-width: 280px;
}
.site-footer h5 {
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 20px;
}
.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-links li {
    margin-bottom: 10px;
}
.footer-links a {
    color: rgba(255, 255, 255, .65);
    font-size: .92rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.footer-links a:hover {
    color: #fff;
    padding-left: 4px;
}
.footer-contact {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: .9rem;
}
.footer-contact li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    color: rgba(255, 255, 255, .65);
}
.footer-contact li i {
    color: var(--accent-light);
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .08);
    margin-top: 50px;
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    font-size: .85rem;
    color: rgba(255, 255, 255, .45);
}

@media (max-width: 1024px) {
    .hero h1 { font-size: 2.9rem; }
    .section-title { font-size: 1.9rem; }
    .process-arrow { display: none; }
}
@media (max-width: 768px) {
    .hero { min-height: 520px; padding: 60px 0; }
    .hero h1 { font-size: 2.2rem; }
    .hero p { font-size: 1rem; }
    .hero-stats { gap: 18px; margin-top: 36px; }
    .hero-stat-item .num { font-size: 1.5rem; }
    .section-title { font-size: 1.6rem; }
    .metrics-section { padding: 60px 0; }
    .categories-section { padding: 60px 0; }
    .features-section { padding: 60px 0; }
    .news-section { padding: 60px 0; }
    .process-section { padding: 60px 0; }
    .showcase-section { padding: 60px 0; }
    .faq-section { padding: 60px 0; }
    .cta-section { padding: 60px 0; }
    .cta-box { padding: 50px 30px; }
    .cta-box h2 { font-size: 1.7rem; }
    .showcase-image { margin-top: 30px; }
    .nav-actions { margin-top: 14px; }
    .search-box { width: 100%; margin-bottom: 6px; }
    .search-box input { width: 100%; }
    .search-box input:focus { width: 100%; }
    .nav-actions .btn { flex: 1; text-align: center; }
    .site-footer { padding: 50px 0 20px; }
}
@media (max-width: 520px) {
    .hero h1 { font-size: 1.8rem; }
    .hero-buttons .btn { width: 100%; }
    .section-header { margin-bottom: 32px; }
    .metrics-card .num { font-size: 1.8rem; }
    .process-step { padding: 20px 10px; }
    .cta-box { padding: 36px 20px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: category1 */
:root {
            --primary: #1e3a8a;
            --primary-dark: #172f6b;
            --primary-light: #3b5bdb;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --bg-light: #eef2ff;
            --text-dark: #0f172a;
            --text-body: #334155;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(15, 23, 42, .06);
            --shadow-md: 0 10px 36px rgba(15, 23, 42, .10);
            --shadow-lg: 0 20px 60px rgba(15, 23, 42, .14);
            --transition: all .3s ease;
        }

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

        body {
            margin: 0;
            font-family: "Noto Sans SC", system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--text-body);
            background-color: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }

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

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

        .container {
            max-width: 1280px;
        }

        .section {
            padding: 90px 0;
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 52px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(30, 58, 138, .08);
            color: var(--primary);
            font-weight: 600;
            font-size: .88rem;
            padding: 6px 18px;
            border-radius: 100px;
            margin-bottom: 14px;
            letter-spacing: .02em;
        }

        .section-head h2 {
            font-size: clamp(1.75rem, 3.5vw, 2.5rem);
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 14px;
            letter-spacing: -.01em;
        }

        .section-head p {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1030;
        }

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

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -.01em;
        }
        .navbar-brand:hover {
            color: var(--text-dark);
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 1rem;
            box-shadow: 0 6px 16px rgba(30, 58, 138, .3);
        }

        .navbar-nav {
            gap: 6px;
        }

        .nav-link {
            font-weight: 500;
            font-size: .95rem;
            color: var(--text-body) !important;
            padding: 8px 16px !important;
            border-radius: 100px;
            position: relative;
        }

        .nav-link:hover {
            color: var(--primary) !important;
            background: rgba(30, 58, 138, .06);
        }

        .nav-link.active {
            color: var(--primary) !important;
            background: rgba(30, 58, 138, .08);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            border-radius: 100px;
            padding: 7px 16px;
            min-width: 180px;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(30, 58, 138, .1);
            background: #fff;
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: .88rem;
            width: 100%;
            color: var(--text-dark);
        }

        .btn {
            border-radius: 100px;
            font-weight: 600;
            font-size: .9rem;
            padding: 9px 22px;
            transition: var(--transition);
            border: none;
        }

        .btn-sm {
            padding: 7px 18px;
            font-size: .85rem;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 16px rgba(30, 58, 138, .28);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(30, 58, 138, .34);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-dark);
            border: 1px solid var(--border-color);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--bg-body);
            color: var(--primary);
            border-color: var(--primary-light);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 6px 18px rgba(245, 158, 11, .3);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 26px rgba(245, 158, 11, .36);
        }

        .navbar-toggler {
            border: none;
            padding: 4px 8px;
            background: transparent;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(15,23,42,.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2.2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ===== Banner ===== */
        .category-banner {
            position: relative;
            padding: 120px 0 90px;
            background: linear-gradient(135deg, rgba(15, 23, 42, .92), rgba(30, 58, 138, .82));
            overflow: hidden;
        }

        .category-banner-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: .35;
        }

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

        .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
            font-size: .9rem;
            color: rgba(255, 255, 255, .8);
            margin-bottom: 20px;
        }
        .breadcrumb-custom a {
            color: rgba(255, 255, 255, .7);
        }
        .breadcrumb-custom a:hover {
            color: #fff;
        }
        .breadcrumb-custom .sep {
            opacity: .5;
            margin: 0 2px;
        }
        .breadcrumb-custom .current {
            color: #fff;
            font-weight: 600;
        }

        .category-banner h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -.02em;
        }

        .category-banner p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, .85);
            max-width: 680px;
            margin: 0;
        }

        .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 28px;
        }
        .banner-tags span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            color: #fff;
            font-size: .85rem;
            padding: 6px 16px;
            border-radius: 100px;
            backdrop-filter: blur(8px);
        }
        .banner-tags i {
            color: var(--accent);
        }

        /* ===== 核心说明 ===== */
        .section-intro {
            background: var(--bg-white);
        }

        .intro-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .intro-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            text-align: center;
            transition: var(--transition);
        }
        .intro-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
            border-color: transparent;
        }

        .intro-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin: 0 auto 20px;
            background: rgba(30, 58, 138, .08);
            color: var(--primary);
        }
        .intro-card:nth-child(2) .intro-icon {
            background: rgba(245, 158, 11, .1);
            color: var(--accent-dark);
        }
        .intro-card:nth-child(3) .intro-icon {
            background: rgba(16, 185, 129, .1);
            color: #059669;
        }

        .intro-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }
        .intro-card p {
            font-size: .92rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* ===== 功能模块 ===== */
        .section-modules {
            background: var(--bg-body);
        }

        .module-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            height: 100%;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .module-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
            border-color: transparent;
        }

        .module-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .module-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .module-card:hover .module-card-img img {
            transform: scale(1.06);
        }
        .module-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, .15), transparent);
        }

        .module-card-body {
            padding: 28px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .module-card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }
        .module-card-body p {
            font-size: .92rem;
            color: var(--text-muted);
            margin-bottom: 18px;
            flex: 1;
        }

        .module-link {
            font-size: .9rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .module-link:hover {
            gap: 12px;
        }

        /* ===== 使用流程 ===== */
        .section-steps {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .section-steps::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 80% 20%, rgba(245, 158, 11, .12), transparent 50%);
        }

        .section-steps .section-head h2,
        .section-steps .section-head .section-tag {
            position: relative;
            z-index: 1;
        }
        .section-steps .section-head h2 {
            color: #fff;
        }
        .section-steps .section-head p {
            color: rgba(255, 255, 255, .7);
        }
        .section-steps .section-tag {
            background: rgba(255, 255, 255, .1);
            color: #fff;
        }

        .steps-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
            z-index: 1;
        }

        .step-item {
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 72px;
            height: 72px;
            margin: 0 auto 22px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent);
            position: relative;
            backdrop-filter: blur(6px);
        }

        .step-item::after {
            content: "\f054";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            right: -24px;
            top: 24px;
            color: rgba(255, 255, 255, .35);
            font-size: .85rem;
        }
        .step-item:last-child::after {
            display: none;
        }

        .step-item h3 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-item p {
            color: rgba(255, 255, 255, .6);
            font-size: .85rem;
            margin: 0;
            max-width: 200px;
            margin-inline: auto;
        }

        /* ===== 平台优势 ===== */
        .section-features {
            background: var(--bg-white);
        }

        .feature-wrap {
            display: grid;
            grid-template-columns: 1.05fr 1fr;
            gap: 70px;
            align-items: center;
        }

        .feature-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .feature-visual img {
            width: 100%;
            display: block;
        }
        .feature-visual-badge {
            position: absolute;
            bottom: 24px;
            left: 24px;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-md);
            padding: 12px 22px;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .feature-visual-badge .num {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
        }
        .feature-visual-badge .label {
            font-size: .82rem;
            color: var(--text-muted);
            line-height: 1.4;
        }

        .feature-content h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
            letter-spacing: -.01em;
        }
        .feature-content>p {
            color: var(--text-muted);
            margin-bottom: 30px;
            font-size: 1rem;
        }

        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 18px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }
        .feature-list .check-icon {
            width: 26px;
            height: 26px;
            flex-shrink: 0;
            border-radius: 50%;
            background: rgba(16, 185, 129, .12);
            color: #059669;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .8rem;
            margin-top: 2px;
        }
        .feature-list .text {
            flex: 1;
        }
        .feature-list .text strong {
            display: block;
            font-size: .98rem;
            color: var(--text-dark);
            font-weight: 600;
            margin-bottom: 2px;
        }
        .feature-list .text span {
            font-size: .88rem;
            color: var(--text-muted);
        }

        /* ===== FAQ ===== */
        .section-faq {
            background: var(--bg-body);
        }

        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .accordion-item {
            border: 1px solid var(--border-color) !important;
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            overflow: hidden;
            background: #fff;
        }

        .accordion-button {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            padding: 22px 28px;
            background: #fff;
            box-shadow: none !important;
        }
        .accordion-button:not(.collapsed) {
            background: rgba(30, 58, 138, .03);
            color: var(--primary);
        }
        .accordion-button::after {
            background-size: .9rem;
        }
        .accordion-button:focus {
            box-shadow: none;
        }

        .accordion-body {
            padding: 0 28px 24px;
            color: var(--text-muted);
            font-size: .95rem;
            border-top: 1px solid var(--border-color);
            padding-top: 18px;
        }

        /* ===== CTA ===== */
        .section-cta {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }
        .section-cta::before {
            content: "";
            position: absolute;
            top: -50px;
            right: 10%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(245, 158, 11, .15);
            filter: blur(50px);
        }

        .cta-content {
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .cta-content h2 {
            color: #fff;
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            margin-bottom: 14px;
        }
        .cta-content p {
            color: rgba(255, 255, 255, .8);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 34px;
        }
        .cta-btns {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            padding: 70px 0 0;
            color: rgba(255, 255, 255, .75);
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: .92rem;
            color: rgba(255, 255, 255, .6);
            max-width: 320px;
            line-height: 1.8;
        }

        .site-footer h5 {
            color: #fff;
            font-size: .95rem;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: .02em;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 10px;
        }
        .footer-links a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, .6);
            font-size: .9rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-links a i {
            font-size: .75rem;
            color: var(--accent);
        }

        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 12px;
            font-size: .9rem;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, .65);
        }
        .footer-contact li i {
            color: var(--accent);
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            margin-top: 50px;
            padding: 24px 0;
            border-top: 1px solid rgba(255, 255, 255, .1);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: .85rem;
            color: rgba(255, 255, 255, .45);
            flex-wrap: wrap;
            gap: 8px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .section {
                padding: 70px 0;
            }
            .search-box {
                display: none;
            }
            .intro-grid {
                gap: 20px;
            }
            .steps-wrap {
                gap: 20px;
            }
            .step-item::after {
                right: -16px;
            }
            .feature-wrap {
                gap: 40px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }
            .section-head {
                margin-bottom: 40px;
            }
            .navbar-nav {
                padding-top: 16px;
                padding-bottom: 10px;
            }
            .nav-actions {
                padding-bottom: 8px;
                flex-wrap: wrap;
            }
            .search-box {
                display: flex;
                width: 100%;
                margin-bottom: 8px;
            }
            .category-banner {
                padding: 90px 0 70px;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .steps-wrap {
                grid-template-columns: 1fr 1fr;
            }
            .step-item::after {
                display: none;
            }
            .feature-wrap {
                grid-template-columns: 1fr;
            }
            .feature-visual {
                order: -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .section {
                padding: 48px 0;
            }
            .category-banner {
                padding: 70px 0 54px;
            }
            .category-banner h1 {
                font-size: 1.8rem;
            }
            .steps-wrap {
                grid-template-columns: 1fr;
                max-width: 280px;
                margin-inline: auto;
            }
            .cta-btns {
                flex-direction: column;
                align-items: center;
            }
            .cta-btns .btn {
                width: 100%;
                max-width: 260px;
            }
        }

/* roulang page: article */
:root {
            --primary: #2E5BFF;
            --primary-dark: #1B3FBD;
            --primary-light: #EDF1FF;
            --accent: #06B6D4;
            --accent-soft: #E0F9FF;
            --dark: #0A1428;
            --dark-card: #111C31;
            --text: #1E293B;
            --muted: #64748B;
            --gray-600: #64748B;
            --light: #F4F6FC;
            --white: #FFFFFF;
            --border: #E2E8F0;
            --shadow-sm: 0 2px 10px rgba(2, 6, 23, .04);
            --shadow: 0 4px 24px rgba(2, 6, 23, .06);
            --shadow-lg: 0 16px 48px rgba(2, 6, 23, .10);
            --radius-sm: 8px;
            --radius: 14px;
            --radius-lg: 22px;
            --transition: .25s cubic-bezier(.4, 0, .2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            margin: 0;
            font-family: var(--font-sans);
            color: var(--text);
            background: var(--white);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            vertical-align: middle;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1240px;
        }

        .site-header {
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .navbar {
            padding: .65rem 0;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--text);
            letter-spacing: -0.01em;
        }
        .navbar-brand:hover {
            color: var(--text);
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 11px;
            color: #fff;
            font-size: 1rem;
            margin-right: .55rem;
            box-shadow: 0 4px 14px rgba(46, 91, 255, .28);
            flex-shrink: 0;
        }
        .navbar-nav {
            gap: .25rem;
        }
        .nav-link {
            font-weight: 500;
            color: var(--text);
            padding: .5rem 1rem;
            position: relative;
            border-radius: 8px;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: .2rem;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: width var(--transition);
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            width: 60%;
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: .5rem;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: .4rem;
            background: var(--light);
            border-radius: 40px;
            padding: .35rem .8rem;
            border: 1px solid var(--border);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 91, 255, .08);
            background: var(--white);
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: .875rem;
            width: 110px;
            color: var(--text);
        }
        .search-box input::placeholder {
            color: var(--muted);
        }
        .navbar-toggler {
            border: none;
            padding: .35rem .5rem;
            border-radius: 8px;
            color: var(--text);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(46, 91, 255, .12);
            outline: none;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%231E293B' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .btn {
            border-radius: var(--radius-sm);
            font-weight: 500;
            padding: .5rem 1.15rem;
            transition: all var(--transition);
            font-size: .95rem;
            border-width: 1px;
        }
        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(46, 91, 255, .25);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: .35rem .85rem;
            font-size: .85rem;
        }
        .btn-lg {
            padding: .75rem 1.8rem;
            font-size: 1rem;
            border-radius: 12px;
        }
        .btn-light {
            background: #fff;
            border-color: #fff;
            color: var(--primary);
        }
        .btn-light:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 255, 255, .18);
        }
        .btn-outline-light {
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, .6);
            color: #fff;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        .article-hero {
            position: relative;
            padding: 5.5rem 0 4rem;
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
        }
        .article-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 18, 40, .94) 0%, rgba(12, 25, 58, .84) 50%, rgba(30, 60, 150, .56) 100%);
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: .5rem;
            font-size: .875rem;
            color: rgba(255, 255, 255, .7);
            margin-bottom: 1.5rem;
        }
        .article-breadcrumb a {
            color: rgba(255, 255, 255, .8);
            text-decoration: none;
            transition: color var(--transition);
        }
        .article-breadcrumb a:hover {
            color: #fff;
        }
        .article-breadcrumb i {
            font-size: .7rem;
            color: rgba(255, 255, 255, .5);
        }
        .article-title {
            font-size: clamp(1.6rem, 3.4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.3;
            max-width: 800px;
            margin: 0 0 1.25rem;
            letter-spacing: -0.02em;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            color: rgba(255, 255, 255, .85);
            font-size: .925rem;
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
        }
        .meta-item i {
            color: rgba(255, 255, 255, .6);
        }

        .article-section {
            padding: 4.5rem 0;
            background: var(--light);
        }
        .article-card-content {
            background: var(--white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            padding: 2.5rem 2.8rem;
            margin-bottom: 2rem;
        }
        .article-body {
            font-size: 1.02rem;
            line-height: 1.9;
            color: var(--text);
        }
        .article-body h2 {
            font-size: 1.55rem;
            font-weight: 700;
            margin: 2.2rem 0 1rem;
            padding-bottom: .6rem;
            border-bottom: 2px solid var(--border);
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin: 1.8rem 0 1rem;
        }
        .article-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 1.5rem 0 .8rem;
        }
        .article-body p {
            margin-bottom: 1.5rem;
        }
        .article-body img {
            max-width: 100%;
            border-radius: var(--radius);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body ul {
            margin-bottom: 1.5rem;
            padding-left: 1.4rem;
        }
        .article-body ol {
            margin-bottom: 1.5rem;
            padding-left: 1.4rem;
        }
        .article-body li {
            margin-bottom: .45rem;
            line-height: 1.8;
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 1rem 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 1.5rem 0;
            color: var(--text);
        }
        .article-body blockquote p {
            margin-bottom: .5rem;
        }
        .article-body blockquote p:last-child {
            margin-bottom: 0;
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body a:hover {
            color: var(--primary-dark);
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: .95rem;
            border-radius: 10px;
            overflow: hidden;
        }
        .article-body table th {
            background: var(--dark);
            color: #fff;
            padding: .75rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        .article-body table td {
            padding: .7rem 1rem;
            border-bottom: 1px solid var(--border);
        }
        .article-body table tr:last-child td {
            border-bottom: none;
        }

        .article-tags {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: .6rem;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border);
        }
        .tag-label {
            font-weight: 600;
            font-size: .9rem;
            color: var(--muted);
        }
        .tag-link {
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            background: var(--light);
            border: 1px solid var(--border);
            border-radius: 40px;
            padding: .3rem .8rem;
            font-size: .8rem;
            color: var(--text);
            transition: all var(--transition);
        }
        .tag-link:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }

        .not-found {
            text-align: center;
            padding: 3.5rem 1.5rem;
        }
        .not-found-icon {
            width: 84px;
            height: 84px;
            margin: 0 auto 1.5rem;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--primary);
        }
        .not-found h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: .75rem;
        }
        .not-found p {
            color: var(--muted);
            max-width: 420px;
            margin: 0 auto 1.8rem;
        }

        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .sidebar-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .sidebar-card:hover {
            box-shadow: var(--shadow);
        }
        .sidebar-cover {
            height: 150px;
            overflow: hidden;
            position: relative;
        }
        .sidebar-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .sidebar-card:hover .sidebar-cover img {
            transform: scale(1.05);
        }
        .sidebar-body {
            padding: 1.5rem;
        }
        .sidebar-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: .6rem;
        }
        .sidebar-body p {
            font-size: .875rem;
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 1rem;
        }
        .sidebar-title {
            font-size: 1rem;
            font-weight: 700;
            padding: 1.2rem 1.3rem .8rem;
            margin: 0;
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
        }
        .sidebar-title i {
            color: var(--primary);
        }
        .sidebar-nav {
            list-style: none;
            padding: .5rem 0;
            margin: 0;
        }
        .sidebar-nav li a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: .75rem 1.3rem;
            color: var(--text);
            font-size: .9rem;
            font-weight: 500;
            transition: background var(--transition), color var(--transition);
        }
        .sidebar-nav li a i:first-child {
            width: 24px;
            color: var(--primary);
        }
        .sidebar-nav li a .arrow {
            font-size: .75rem;
            color: var(--muted);
            transition: transform var(--transition);
        }
        .sidebar-nav li a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .sidebar-nav li a:hover .arrow {
            transform: translateX(3px);
            color: var(--primary);
        }
        .contact-list {
            list-style: none;
            padding: .8rem 1.3rem;
            margin: 0;
        }
        .contact-list li {
            display: flex;
            align-items: center;
            gap: .7rem;
            padding: .35rem 0;
            font-size: .875rem;
            color: var(--text);
        }
        .contact-list i {
            width: 18px;
            color: var(--primary);
        }
        .contact-card .btn {
            margin-left: 1.3rem !important;
            margin-right: 1.3rem !important;
            margin-bottom: 1.3rem !important;
        }

        .related-section {
            padding: 4.5rem 0;
            background: var(--white);
        }
        .section-head {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            margin-bottom: 2.5rem;
            gap: 1rem;
        }
        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: .8rem;
            font-weight: 600;
            border-radius: 40px;
            padding: .3rem .9rem;
            margin-bottom: .5rem;
        }
        .section-head h2 {
            font-size: 1.9rem;
            font-weight: 800;
            margin: .3rem 0 .2rem;
            letter-spacing: -0.02em;
        }
        .section-head p {
            color: var(--muted);
            margin: 0;
            font-size: .95rem;
        }
        .related-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
            height: 100%;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .related-cover {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .related-card:hover .related-cover img {
            transform: scale(1.06);
        }
        .related-cat {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(10, 20, 40, .8);
            color: #fff;
            font-size: .75rem;
            font-weight: 500;
            padding: .25rem .7rem;
            border-radius: 40px;
            backdrop-filter: blur(8px);
        }
        .related-body {
            padding: 1.4rem 1.5rem 1.5rem;
        }
        .related-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.45;
            margin-bottom: .6rem;
        }
        .related-body h3 a {
            color: var(--text);
        }
        .related-body h3 a:hover {
            color: var(--primary);
        }
        .related-body p {
            font-size: .85rem;
            color: var(--muted);
            margin-bottom: .8rem;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-link {
            font-size: .85rem;
            font-weight: 600;
            color: var(--primary);
        }
        .related-link i {
            transition: transform var(--transition);
            font-size: .75rem;
        }
        .related-link:hover i {
            transform: translateX(4px);
        }

        .cta-band {
            padding: 4rem 0;
            background: url('/assets/images/backpic/back-2.png') center / cover fixed;
            position: relative;
        }
        .cta-band::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(10, 20, 40, .94), rgba(22, 40, 88, .88));
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
            flex-wrap: wrap;
            padding: 1rem 0;
        }
        .cta-info h2 {
            color: #fff;
            font-size: 1.9rem;
            font-weight: 800;
            margin-bottom: .5rem;
            letter-spacing: -0.02em;
        }
        .cta-info p {
            color: rgba(255, 255, 255, .75);
            font-size: 1.05rem;
            margin: 0;
        }
        .cta-buttons {
            display: flex;
            gap: .8rem;
            flex-wrap: wrap;
        }

        .site-footer {
            background: var(--dark);
            color: #94A3B8;
            padding-top: 4rem;
            padding-bottom: 0;
        }
        .footer-brand {
            color: #fff;
            font-size: 1.35rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            margin-bottom: 1.2rem;
        }
        .footer-brand .brand-icon {
            width: 36px;
            height: 36px;
            font-size: .95rem;
            margin-right: .55rem;
        }
        .footer-desc {
            font-size: .9rem;
            color: #94A3B8;
            max-width: 320px;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1.3rem;
            letter-spacing: .02em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: .65rem;
        }
        .footer-links a {
            color: #94A3B8;
            font-size: .9rem;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            transition: color var(--transition), padding-left var(--transition);
        }
        .footer-links a i {
            font-size: .65rem;
            color: rgba(255, 255, 255, .35);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: .6rem;
            margin-bottom: .65rem;
            font-size: .875rem;
            color: #94A3B8;
        }
        .footer-contact i {
            width: 16px;
            color: rgba(255, 255, 255, .5);
        }
        .footer-bottom {
            margin-top: 3rem;
            padding: 1.5rem 0;
            border-top: 1px solid rgba(255, 255, 255, .08);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: .5rem;
            font-size: .85rem;
            color: #64748B;
        }

        @media (min-width: 992px) {
            .article-sidebar {
                position: sticky;
                top: 100px;
            }
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: var(--white);
                border-radius: var(--radius);
                border: 1px solid var(--border);
                padding: 1rem;
                margin-top: .75rem;
                box-shadow: var(--shadow);
            }
            .nav-actions {
                margin-top: 1rem;
                flex-wrap: wrap;
            }
            .search-box {
                flex: 1;
                min-width: 160px;
            }
            .search-box input {
                width: 100%;
            }
            .article-card-content {
                padding: 2rem 1.8rem;
            }
            .cta-inner {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .cta-buttons {
                justify-content: center;
            }
        }

        @media (max-width: 767.98px) {
            .article-hero {
                padding: 4rem 0 3rem;
            }
            .article-title {
                font-size: 1.6rem;
            }
            .article-meta {
                gap: 1rem;
            }
            .article-section {
                padding: 3rem 0;
            }
            .article-card-content {
                padding: 1.6rem 1.2rem;
                border-radius: 16px;
            }
            .related-section {
                padding: 3rem 0;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: .5rem;
            }
            .section-head h2 {
                font-size: 1.5rem;
            }
            .cta-band {
                padding: 3rem 0;
                background-attachment: scroll;
            }
            .cta-info h2 {
                font-size: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer {
                padding-top: 3rem;
            }
        }

        @media (max-width: 575.98px) {
            .nav-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .nav-actions .btn {
                text-align: center;
            }
            .article-title {
                font-size: 1.35rem;
            }
            .article-meta {
                font-size: .8rem;
                gap: .8rem;
            }
            .article-body {
                font-size: .97rem;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
            .article-card-content {
                padding: 1.2rem 1rem;
            }
            .sidebar-card {
                margin-bottom: 0;
            }
            .cta-buttons .btn {
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-light: #eff6ff;
            --secondary: #06b6d4;
            --accent: #f59e0b;
            --dark: #0f172a;
            --dark-2: #101c36;
            --bg: #f8fafc;
            --bg-white: #ffffff;
            --text: #1e293b;
            --text-light: #506184;
            --text-muted: #94a3b8;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 26px;
            --shadow-sm: 0 4px 14px rgba(15, 23, 42, .05);
            --shadow: 0 12px 32px rgba(15, 23, 42, .08);
            --shadow-lg: 0 24px 50px rgba(15, 23, 42, .14);
            --shadow-primary: 0 10px 26px rgba(37, 99, 235, .28);
            --transition: all .3s cubic-bezier(.4, 0, .2, 1);
            --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
        }
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== 按钮 ===== */
        .btn {
            border-radius: 12px;
            padding: 11px 26px;
            font-weight: 600;
            font-size: .92rem;
            transition: var(--transition);
            border: 2px solid transparent;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: .2px;
        }
        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-primary);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--border);
            color: var(--text);
            padding: 10px 22px;
        }
        .btn-outline:hover,
        .btn-outline:focus {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
            transform: translateY(-2px);
        }
        .btn-light {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-light:hover {
            background: #f1f5f9;
            border-color: #f1f5f9;
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(255, 255, 255, .35);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: .84rem;
            border-radius: 10px;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(37, 99, 235, .35);
            outline-offset: 2px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1080;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(226, 232, 240, .85);
            box-shadow: 0 2px 12px rgba(15, 23, 42, .04);
        }
        .site-header .navbar {
            padding: 12px 0;
            min-height: 68px;
        }
        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.28rem;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -.3px;
        }
        .navbar-brand .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            box-shadow: 0 8px 18px rgba(37, 99, 235, .32);
            transition: var(--transition);
        }
        .navbar-brand:hover .brand-icon {
            transform: rotate(-8deg) scale(1.04);
        }
        .navbar-nav .nav-link {
            font-size: .95rem;
            font-weight: 600;
            color: var(--text-light);
            padding: 8px 18px;
            border-radius: 10px;
            position: relative;
            transition: var(--transition);
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link:focus {
            color: var(--primary);
            background: var(--primary-light);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 2px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: #f1f5f9;
            border-radius: 30px;
            padding: 7px 16px;
            gap: 8px;
            min-width: 180px;
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(37, 99, 235, .1);
        }
        .search-box input {
            border: none;
            background: transparent;
            font-size: .85rem;
            color: var(--text);
            width: 100%;
            min-width: 0;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box input:focus {
            outline: none;
            box-shadow: none;
        }
        .navbar-toggler {
            border: 2px solid var(--border);
            border-radius: 10px;
            padding: 6px 10px;
            background: #fff;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 4px rgba(37, 99, 235, .15);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2333497c' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
            width: 22px;
            height: 22px;
        }

        /* ===== 页面横幅 ===== */
        .page-banner {
            position: relative;
            padding: 88px 0 64px;
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, .88) 0%, rgba(37, 99, 235, .58) 70%, rgba(6, 182, 212, .38) 100%);
            z-index: 1;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -60px;
            right: -30px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(255, 255, 255, .12) 0%, transparent 70%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }
        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, .15);
            border: 1px solid rgba(255, 255, 255, .22);
            backdrop-filter: blur(10px);
            border-radius: 30px;
            padding: 6px 16px;
            font-size: .78rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: #fff;
            margin-bottom: 16px;
        }
        .banner-title {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 14px;
            color: #fff;
            letter-spacing: -1px;
        }
        .banner-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, .85);
            max-width: 540px;
            margin-bottom: 24px;
        }
        .breadcrumb {
            background: rgba(255, 255, 255, .12);
            display: inline-flex;
            padding: 8px 18px;
            border-radius: 30px;
            backdrop-filter: blur(8px);
            font-size: .85rem;
        }
        .breadcrumb-item a {
            color: rgba(255, 255, 255, .75);
        }
        .breadcrumb-item a:hover {
            color: #fff;
        }
        .breadcrumb-item.active {
            color: #fff;
        }
        .breadcrumb-item+.breadcrumb-item::before {
            color: rgba(255, 255, 255, .5);
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 88px 0;
        }
        .section-sm {
            padding: 56px 0;
        }
        .section-alt {
            background: var(--bg);
        }
        .section-white {
            background: #fff;
        }
        .section-head {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-tag {
            display: inline-block;
            font-size: .78rem;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-light);
            padding: 6px 18px;
            border-radius: 30px;
            letter-spacing: 1px;
            margin-bottom: 14px;
            border: 1px solid rgba(37, 99, 235, .1);
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 12px;
            line-height: 1.25;
            letter-spacing: -.5px;
        }
        .section-desc {
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto;
            font-size: .98rem;
        }

        /* ===== 最新资讯卡片 ===== */
        .news-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(37, 99, 235, .18);
        }
        .news-card .card-cover {
            overflow: hidden;
            aspect-ratio: 16/10;
            position: relative;
        }
        .news-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .55s ease;
        }
        .news-card:hover .card-cover img {
            transform: scale(1.06);
        }
        .news-card .card-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, .25), transparent 60%);
        }
        .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(6px);
            color: var(--primary);
            font-size: .75rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 20px;
            box-shadow: 0 4px 12px rgba(15, 23, 42, .1);
        }
        .news-card .card-body {
            padding: 22px 24px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-title {
            font-size: 1.06rem;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.45;
            margin-bottom: 8px;
            transition: var(--transition);
        }
        .news-card:hover .card-title {
            color: var(--primary);
        }
        .card-text {
            font-size: .9rem;
            color: var(--text-light);
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: .8rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
            padding-top: 14px;
            margin-top: 4px;
        }
        .card-meta i {
            color: var(--primary);
            font-size: .78rem;
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* ===== 品牌大事记时间线 ===== */
        .timeline-wrap {
            position: relative;
            max-width: 720px;
            margin: 0 auto;
            padding: 16px 0;
        }
        .timeline-wrap::before {
            content: '';
            position: absolute;
            left: 24px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary), var(--secondary), transparent);
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            padding-left: 68px;
            padding-bottom: 44px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: 16px;
            top: 6px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: #fff;
            border: 4px solid var(--primary);
            box-shadow: 0 0 0 5px rgba(37, 99, 235, .18);
            z-index: 1;
            transition: var(--transition);
        }
        .timeline-item:hover::before {
            background: var(--primary);
            box-shadow: 0 0 0 8px rgba(37, 99, 235, .18);
        }
        .timeline-year {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            font-size: .82rem;
            font-weight: 700;
            padding: 5px 16px;
            border-radius: 20px;
            margin-bottom: 8px;
            box-shadow: 0 4px 14px rgba(37, 99, 235, .25);
        }
        .timeline-item h3 {
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
        }
        .timeline-item p {
            font-size: .92rem;
            color: var(--text-light);
            max-width: 520px;
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            position: relative;
            background: linear-gradient(120deg, #0f172a 0%, #16224a 45%, #0c4a6e 100%);
            padding: 88px 0;
            color: #fff;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: -60px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(37, 99, 235, .2);
            filter: blur(80px);
        }
        .stats-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            right: -20px;
            width: 200px;
            height: 200px;
            background: rgba(6, 182, 212, .25);
            filter: blur(60px);
        }
        .stats-section .container {
            position: relative;
            z-index: 2;
        }
        .stat-item {
            text-align: center;
            padding: 28px 16px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .08);
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, .08);
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, .2);
        }
        .stat-icon {
            font-size: 1.6rem;
            margin-bottom: 10px;
            display: inline-flex;
            width: 58px;
            height: 58px;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            background: rgba(37, 99, 235, .25);
            color: #fff;
            font-size: 1.2rem;
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -1px;
            color: #fff;
            font-variant-numeric: tabular-nums;
        }
        .stat-number .suffix {
            font-size: 1.4rem;
            font-weight: 600;
            margin-left: 2px;
        }
        .stat-label {
            color: rgba(255, 255, 255, .65);
            font-size: .88rem;
            margin-top: 8px;
            font-weight: 500;
        }

        /* ===== 媒体报道 ===== */
        .media-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .media-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px 22px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            transition: var(--transition);
        }
        .media-item:hover {
            border-color: rgba(37, 99, 235, .2);
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }
        .media-thumb {
            width: 88px;
            height: 88px;
            border-radius: 14px;
            overflow: hidden;
            flex-shrink: 0;
            position: relative;
        }
        .media-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .media-content {
            flex: 1;
            min-width: 0;
        }
        .media-source {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: .78rem;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 12px;
            border-radius: 16px;
            margin-bottom: 6px;
        }
        .media-content h3 {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 4px;
            line-height: 1.5;
        }
        .media-content h3 a:hover {
            color: var(--primary);
        }
        .media-content p {
            font-size: .87rem;
            color: var(--text-light);
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .media-date {
            font-size: .78rem;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* ===== 品牌价值 ===== */
        .value-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 40px 28px 30px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .value-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            transform: scaleX(0);
            transition: var(--transition);
        }
        .value-card:hover::before {
            transform: scaleX(1);
        }
        .value-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .value-icon {
            width: 68px;
            height: 68px;
            border-radius: 20px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1.6rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            transition: var(--transition);
        }
        .value-card:hover .value-icon {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            transform: scale(1.05) rotate(-4deg);
            box-shadow: var(--shadow-primary);
        }
        .value-card h3 {
            font-size: 1.12rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--dark);
        }
        .value-card p {
            font-size: .9rem;
            color: var(--text-light);
        }

        /* ===== FAQ ===== */
        .accordion-box {
            max-width: 780px;
            margin: 0 auto;
        }
        .accordion-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .accordion-item:hover {
            border-color: rgba(37, 99, 235, .2);
        }
        .accordion-button {
            padding: 20px 24px;
            font-size: .98rem;
            font-weight: 600;
            color: var(--text);
            background: #fff;
            border: none;
            line-height: 1.5;
            transition: var(--transition);
        }
        .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--primary-light);
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(37, 99, 235, .15);
            border-color: transparent;
        }
        .accordion-button::after {
            flex-shrink: 0;
            width: 1rem;
            height: 1rem;
            margin-left: 12px;
            background-size: contain;
            transition: var(--transition);
        }
        .accordion-body {
            padding: 4px 24px 20px;
            color: var(--text-light);
            font-size: .93rem;
            line-height: 1.8;
            border-top: 1px dashed var(--border);
            background: #fff;
        }

        /* ===== CTA ===== */
        .cta-wrapper {
            padding-bottom: 88px;
            background: #fff;
        }
        .cta-box {
            position: relative;
            background: linear-gradient(120deg, var(--primary) 0%, #1d4ed8 45%, var(--secondary) 100%);
            border-radius: var(--radius-lg);
            padding: 68px 56px;
            text-align: center;
            overflow: hidden;
            color: #fff;
            box-shadow: 0 24px 54px rgba(37, 99, 235, .28);
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -70px;
            left: 10%;
            width: 220px;
            height: 220px;
            background: rgba(255, 255, 255, .08);
            border-radius: 50%;
            filter: blur(20px);
        }
        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -50px;
            right: 8%;
            width: 180px;
            height: 180px;
            background: rgba(255, 255, 255, .1);
            border-radius: 50%;
            filter: blur(30px);
        }
        .cta-box>* {
            position: relative;
            z-index: 1;
        }
        .cta-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 10px;
            color: #fff;
            letter-spacing: -.5px;
        }
        .cta-subtitle {
            font-size: .98rem;
            color: rgba(255, 255, 255, .85);
            max-width: 540px;
            margin: 0 auto 28px;
        }
        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-box .btn-outline {
            border-color: rgba(255, 255, 255, .45);
            color: #fff;
        }
        .cta-box .btn-outline:hover {
            background: rgba(255, 255, 255, .18);
            border-color: #fff;
            color: #fff;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark);
            color: #a5b3ce;
            padding: 68px 0 24px;
            font-size: .9rem;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            box-shadow: 0 8px 18px rgba(37, 99, 235, .3);
        }
        .footer-desc {
            font-size: .88rem;
            color: #8b9bb8;
            max-width: 300px;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .site-footer h5 {
            color: #fff;
            font-size: .98rem;
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }
        .site-footer h5::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 2px;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links li a {
            color: #8b9bb8;
            font-size: .88rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .footer-links li a i {
            font-size: .7rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .footer-links li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-links li a:hover i {
            transform: translateX(2px);
        }
        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 12px;
            color: #8b9bb8;
            font-size: .88rem;
        }
        .footer-contact li i {
            color: var(--secondary);
            margin-top: 5px;
            font-size: .82rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            margin-top: 50px;
            padding-top: 22px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: .82rem;
            color: #6e7f9c;
        }
        .footer-bottom a {
            color: #8b9bb8;
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 992px) {
            .navbar-nav .nav-link.active::after {
                display: none;
            }
            .nav-actions {
                margin-top: 12px;
                padding-top: 12px;
                border-top: 1px solid var(--border);
                width: 100%;
            }
            .search-box {
                flex: 1;
                min-width: 140px;
            }
            .section {
                padding: 64px 0;
            }
            .banner-title {
                font-size: 2.4rem;
            }
            .cta-box {
                padding: 50px 30px;
                border-radius: 20px;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-head {
                margin-bottom: 36px;
            }
            .page-banner {
                padding: 68px 0 48px;
            }
            .banner-title {
                font-size: 1.9rem;
            }
            .banner-desc {
                font-size: .95rem;
            }
            .timeline-wrap::before {
                left: 18px;
            }
            .timeline-item {
                padding-left: 54px;
            }
            .timeline-item::before {
                left: 10px;
                width: 16px;
                height: 16px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .media-item {
                flex-direction: row;
                padding: 16px;
            }
            .media-thumb {
                width: 70px;
                height: 70px;
            }
            .cta-title {
                font-size: 1.5rem;
            }
            .cta-subtitle {
                font-size: .88rem;
            }
            .footer-bottom {
                justify-content: center;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }
            .navbar-brand {
                font-size: 1.1rem;
            }
            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: .86rem;
                border-radius: 10px;
            }
            .banner-title {
                font-size: 1.6rem;
            }
            .banner-tag {
                font-size: .7rem;
                padding: 4px 12px;
            }
            .btn {
                padding: 10px 20px;
                font-size: .86rem;
            }
            .btn-sm {
                padding: 7px 15px;
                font-size: .8rem;
            }
            .media-item {
                flex-wrap: wrap;
            }
            .media-thumb {
                width: 60px;
                height: 60px;
            }
            .value-card {
                padding: 30px 18px 24px;
            }
            .cta-box {
                padding: 42px 22px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
        }
        @media (min-width: 1200px) {
            .container {
                max-width: 1200px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #0d7377;
            --primary-dark: #095b60;
            --primary-light: #e6f4f5;
            --accent: #f0a500;
            --dark: #0f172a;
            --text: #1e293b;
            --muted: #64748b;
            --bg-light: #f8fafc;
            --bg-deep: #0f172a;
            --border: #e2e8f0;
            --radius: 18px;
            --radius-sm: 12px;
            --shadow: 0 12px 32px rgba(15, 23, 42, .08);
            --shadow-lg: 0 24px 52px rgba(15, 23, 42, .14);
            --transition: all .3s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: #fff;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        button,
        input {
            font-family: inherit;
        }
        ::selection {
            background: rgba(13, 115, 119, .18);
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(226, 232, 240, .7);
        }
        .site-header .navbar {
            padding-top: 14px;
            padding-bottom: 14px;
        }
        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.42rem;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.02em;
        }
        .navbar-brand .brand-icon {
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border-radius: 12px;
            font-size: 1.1rem;
            box-shadow: 0 8px 18px rgba(13, 115, 119, .25);
        }
        .navbar-brand:hover {
            color: var(--primary);
        }
        .navbar-nav .nav-link {
            font-weight: 600;
            font-size: .96rem;
            color: var(--text);
            padding: 8px 16px;
            border-radius: 10px;
            position: relative;
        }
        .navbar-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: var(--transition);
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary);
        }
        .navbar-nav .nav-link:hover::after,
        .navbar-nav .nav-link.active::after {
            transform: scaleX(1);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 6px 16px;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(13, 115, 119, .12);
        }
        .search-box input {
            border: none;
            outline: none;
            background: transparent;
            width: 120px;
            font-size: .86rem;
            color: var(--text);
        }
        .btn {
            border-radius: 50px;
            padding: 10px 22px;
            font-weight: 600;
            font-size: .92rem;
            transition: var(--transition);
        }
        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 6px 16px rgba(13, 115, 119, .25);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 22px rgba(13, 115, 119, .3);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .btn-sm {
            padding: 7px 16px;
            font-size: .86rem;
        }
        .navbar-toggler {
            border-radius: 10px;
            border-color: var(--border);
            padding: 4px 10px;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(13, 115, 119, .15);
        }

        /* Hero */
        .category-hero {
            position: relative;
            min-height: 56vh;
            display: flex;
            align-items: center;
            background: linear-gradient(120deg, rgba(15, 23, 42, .85), rgba(13, 115, 119, .75)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
            padding: 110px 0 80px;
        }
        .category-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 80% 20%, rgba(240, 165, 0, .18), transparent 50%);
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .15);
            border: 1px solid rgba(255, 255, 255, .3);
            backdrop-filter: blur(6px);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: .9rem;
            font-weight: 600;
            margin-bottom: 24px;
        }
        .category-hero h1 {
            font-size: clamp(2.4rem, 5vw, 3.6rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -.02em;
            margin-bottom: 18px;
        }
        .category-hero p {
            font-size: 1.15rem;
            max-width: 640px;
            color: rgba(255, 255, 255, .9);
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            font-size: .92rem;
            color: rgba(255, 255, 255, .85);
        }
        .hero-meta i {
            color: var(--accent);
            margin-right: 6px;
        }

        /* Sections */
        .section {
            padding: 90px 0;
        }
        .section-title {
            font-size: 2.1rem;
            font-weight: 800;
            letter-spacing: -.02em;
            color: var(--dark);
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--muted);
            max-width: 660px;
            margin-bottom: 40px;
            line-height: 1.7;
        }

        /* Filter tabs */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 36px;
        }
        .filter-tab {
            padding: 8px 22px;
            border-radius: 50px;
            border: 1px solid var(--border);
            background: #fff;
            font-size: .9rem;
            font-weight: 600;
            color: var(--muted);
            cursor: pointer;
            transition: var(--transition);
        }
        .filter-tab:hover,
        .filter-tab.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 6px 16px rgba(13, 115, 119, .25);
        }

        /* Article cards */
        .article-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: 0 4px 16px rgba(15, 23, 42, .04);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(13, 115, 119, .25);
        }
        .article-card .card-thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }
        .article-card .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .article-card:hover .card-thumb img {
            transform: scale(1.05);
        }
        .article-card .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(4px);
            color: var(--primary);
            font-size: .78rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 30px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, .08);
        }
        .article-card .card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            flex: 1;
        }
        .article-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            line-height: 1.5;
            color: var(--dark);
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card h3 a:hover {
            color: var(--primary);
        }
        .article-card p {
            font-size: .9rem;
            color: var(--muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: .82rem;
            color: var(--muted);
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }
        .article-card .card-meta i {
            color: var(--primary);
        }

        /* Stats */
        .stats-band {
            background: var(--bg-deep);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .stats-band::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -40px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(13, 115, 119, .3), transparent 65%);
        }
        .stats-band .section-title {
            color: #fff;
        }
        .stats-band .section-subtitle {
            color: rgba(255, 255, 255, .7);
        }
        .stat-item {
            text-align: center;
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius);
            padding: 40px 20px;
            backdrop-filter: blur(6px);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, .1);
            transform: translateY(-5px);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .stat-number span {
            color: var(--accent);
        }
        .stat-label {
            font-size: .92rem;
            color: rgba(255, 255, 255, .75);
        }

        /* Feature panels */
        .feature-panel {
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: 0 6px 20px rgba(15, 23, 42, .06);
            transition: var(--transition);
            height: 100%;
        }
        .feature-panel:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .feature-panel .panel-img {
            aspect-ratio: 16 / 8.5;
            overflow: hidden;
        }
        .feature-panel .panel-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .feature-panel:hover .panel-img img {
            transform: scale(1.04);
        }
        .feature-panel .panel-body {
            padding: 30px;
        }
        .feature-panel .panel-body .panel-label {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: .8rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 30px;
            margin-bottom: 14px;
        }
        .feature-panel .panel-body h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }
        .feature-panel .panel-body p {
            color: var(--muted);
            font-size: .95rem;
            line-height: 1.7;
            margin-bottom: 18px;
        }
        .panel-link {
            color: var(--primary);
            font-weight: 600;
            font-size: .9rem;
        }
        .panel-link i {
            transition: var(--transition);
            margin-left: 6px;
        }
        .panel-link:hover i {
            transform: translateX(4px);
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, rgba(13, 115, 119, .92), rgba(15, 23, 42, .88)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 80px 0;
            color: #fff;
            position: relative;
        }
        .cta-section .section-title {
            color: #fff;
        }
        .cta-section .section-subtitle {
            color: rgba(255, 255, 255, .8);
        }
        .cta-box {
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: var(--radius);
            padding: 32px;
            backdrop-filter: blur(8px);
            max-width: 620px;
        }
        .cta-box form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .cta-box input[type="email"] {
            flex: 1;
            min-width: 220px;
            border: 1px solid rgba(255, 255, 255, .3);
            background: rgba(255, 255, 255, .1);
            border-radius: 50px;
            padding: 12px 20px;
            color: #fff;
            outline: none;
            font-size: .92rem;
        }
        .cta-box input[type="email"]::placeholder {
            color: rgba(255, 255, 255, .6);
        }
        .cta-box input[type="email"]:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(240, 165, 0, .25);
        }
        .cta-box .btn-warning {
            background: var(--accent);
            border-color: var(--accent);
            color: var(--dark);
            font-weight: 700;
        }
        .cta-box .btn-warning:hover {
            background: #ffb629;
            border-color: #ffb629;
            transform: translateY(-2px);
        }
        .cta-tip {
            margin-top: 16px;
            font-size: .82rem;
            color: rgba(255, 255, 255, .65);
        }

        /* FAQ */
        .faq-wrap .accordion-item {
            border: 1px solid var(--border) !important;
            border-radius: var(--radius-sm) !important;
            margin-bottom: 16px;
            overflow: hidden;
            background: #fff;
            box-shadow: 0 2px 10px rgba(15, 23, 42, .03);
        }
        .faq-wrap .accordion-button {
            font-weight: 600;
            color: var(--text);
            background: #fff;
            padding: 18px 24px;
            border: none;
            box-shadow: none !important;
        }
        .faq-wrap .accordion-button:focus {
            box-shadow: none !important;
        }
        .faq-wrap .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary);
        }
        .faq-wrap .accordion-button::after {
            background-size: 16px;
        }
        .faq-wrap .accordion-body {
            padding: 18px 24px;
            color: var(--muted);
            background: #fbfdfd;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, .8);
            padding: 80px 0 0;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 18px;
        }
        .site-footer .brand-icon {
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border-radius: 12px;
            font-size: 1.1rem;
        }
        .footer-desc {
            font-size: .92rem;
            color: rgba(255, 255, 255, .6);
            line-height: 1.8;
            max-width: 300px;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .footer-links,
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li,
        .footer-contact li {
            margin-bottom: 12px;
        }
        .footer-links a,
        .footer-contact a {
            color: rgba(255, 255, 255, .65);
            font-size: .9rem;
            transition: var(--transition);
        }
        .footer-links a i {
            color: var(--primary);
            margin-right: 6px;
            font-size: .8rem;
        }
        .footer-links a:hover,
        .footer-contact a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact li {
            font-size: .9rem;
            color: rgba(255, 255, 255, .65);
        }
        .footer-contact i {
            color: var(--accent);
            margin-right: 10px;
            width: 18px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            margin-top: 60px;
            padding: 22px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: .85rem;
            color: rgba(255, 255, 255, .45);
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: #fff;
                border-radius: var(--radius);
                padding: 20px;
                margin-top: 14px;
                box-shadow: var(--shadow);
                border: 1px solid var(--border);
            }
            .navbar-nav .nav-link {
                padding: 10px 14px;
            }
            .nav-actions {
                margin-top: 14px;
                flex-wrap: wrap;
            }
            .search-box input {
                width: 100%;
            }
            .section {
                padding: 60px 0;
            }
            .category-hero {
                min-height: 48vh;
                padding: 80px 0 60px;
            }
        }
        @media (max-width: 767.98px) {
            .category-hero h1 {
                font-size: 2.2rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .stat-number {
                font-size: 2rem;
            }
            .cta-box form {
                flex-direction: column;
            }
            .cta-box input[type="email"] {
                width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .category-hero {
                padding: 70px 0 50px;
            }
            .category-hero h1 {
                font-size: 1.9rem;
            }
            .hero-meta {
                flex-direction: column;
                gap: 8px;
            }
            .section {
                padding: 50px 0;
            }
            .filter-bar {
                gap: 8px;
            }
            .filter-tab {
                padding: 6px 14px;
                font-size: .82rem;
            }
            .article-card .card-body {
                padding: 18px;
            }
            .feature-panel .panel-body {
                padding: 22px;
            }
            .feature-panel .panel-body h3 {
                font-size: 1.15rem;
            }
        }