/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #60a5fa;
    --accent: #06b6d4;
    --accent-light: #22d3ee;
    --bg-main: #ffffff;
    --bg-secondary: #f1f5f9;
    --bg-dark: #0f172a;
    --bg-dark-2: #1e293b;
    --text-main: #0f172a;
    --text-body: #334155;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-full: 999px;
    --shadow-sm: 0 2px 10px rgba(15, 23, 42, .05);
    --shadow-md: 0 10px 30px rgba(15, 23, 42, .08);
    --shadow-lg: 0 24px 60px rgba(15, 23, 42, .12);
    --shadow-primary: 0 8px 28px rgba(37, 99, 235, .28);
    --section-pad: 90px;
    --container-w: 1200px;
    --transition: all .3s cubic-bezier(.4, 0, .2, 1);
}

/* ===== 基础重置 ===== */
*, *::before, *::after { 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(--text-body);
    background: var(--bg-main);
    -webkit-font-smoothing: antialiased;
}

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

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

a:hover { color: var(--primary-dark); }

button { font-family: inherit; cursor: pointer; }

input, select, textarea { font-family: inherit; }

ul, ol { list-style: none; }

.container {
    max-width: var(--container-w);
    margin: 0 auto;
    padding: 0 28px;
}

.section-padding { padding: var(--section-pad) 0; }

/* ===== 导航 ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(226, 232, 240, .7);
    box-shadow: var(--shadow-sm);
}

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

.logo {
    font-size: 26px;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -1px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo::before {
    content: '';
    width: 10px;
    height: 10px;
    border-radius: 3px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: inline-block;
}

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

.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 10px 18px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-body);
    border-radius: var(--radius-full);
    transition: var(--transition);
    position: relative;
}

.nav-link:hover { background: rgba(37, 99, 235, .06); color: var(--primary); }

.nav-link.active {
    background: rgba(37, 99, 235, .1);
    color: var(--primary);
    font-weight: 600;
}

.nav-cta {
    margin-left: 10px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-full);
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    border: none;
    transition: var(--transition);
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(37, 99, 235, .35);
    color: #fff;
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, .5);
}

.btn-outline:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, .1);
    color: #fff;
}

.btn-outline-dark {
    background: transparent;
    color: var(--text-main);
    border: 2px solid var(--border);
}

.btn-outline-dark:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(37, 99, 235, .03);
}

.btn-light {
    background: #fff;
    color: var(--primary);
    box-shadow: 0 4px 16px rgba(255, 255, 255, .2);
}

.btn-light:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 255, 255, .3);
    color: var(--primary-dark);
}

.btn-sm { padding: 8px 16px; font-size: 14px; }

.btn-lg { padding: 16px 40px; font-size: 17px; }

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-main);
    padding: 8px;
    border-radius: 8px;
    z-index: 1001;
}

.menu-toggle:hover { background: rgba(0, 0, 0, .04); }

/* ===== Hero ===== */
.hero {
    position: relative;
    background: linear-gradient(135deg, rgba(15, 23, 42, .94), rgba(29, 78, 216, .85)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    padding: 150px 0 140px;
    color: #fff;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -80px;
    right: -80px;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(6, 182, 212, .2);
    filter: blur(60px);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .2);
    padding: 8px 20px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
    margin-bottom: 28px;
    backdrop-filter: blur(6px);
}

.hero-badge i { color: var(--accent-light); }

.hero h1 {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -2px;
    margin-bottom: 24px;
}

.hero h1 span {
    background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 18px;
    line-height: 1.8;
    color: rgba(255, 255, 255, .85);
    margin-bottom: 40px;
    max-width: 640px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 56px;
}

.hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 24px;
    flex-wrap: wrap;
}

.hero-stat {
    display: flex;
    flex-direction: column;
}

.hero-stat .num {
    font-size: 40px;
    font-weight: 800;
    line-height: 1.2;
    background: linear-gradient(135deg, #fff, var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-stat .label {
    font-size: 14px;
    color: rgba(255, 255, 255, .7);
    margin-top: 4px;
}

/* ===== 板块通用 ===== */
.section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(37, 99, 235, .08);
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    padding: 8px 20px;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
}

.section-head h2 {
    font-size: 38px;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1.2;
    letter-spacing: -1px;
    margin-bottom: 16px;
}

.section-head .sub {
    font-size: 17px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ===== 核心优势 ===== */
.features-section {
    background: var(--bg-main);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.feature-card {
    background: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(37, 99, 235, .1), rgba(6, 182, 212, .1));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--primary);
    margin-bottom: 24px;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    transform: scale(1.05);
    box-shadow: var(--shadow-primary);
}

.feature-card h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ===== 分类入口 ===== */
.categories-section {
    background: var(--bg-secondary);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.category-card {
    display: block;
    background: var(--bg-main);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
}

.category-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.category-cover {
    height: 280px;
    overflow: hidden;
    position: relative;
}

.category-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .6s ease;
}

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

.category-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15, 23, 42, .5), transparent 70%);
}

.category-body {
    padding: 30px;
    position: relative;
}

.category-body h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 10px;
}

.category-body p {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 20px;
}

.category-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
}

.category-link i {
    transition: transform .3s ease;
}

.category-card:hover .category-link i { transform: translateX(6px); }

/* ===== 最新资讯 ===== */
.news-section { background: var(--bg-main); }

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

.news-card {
    background: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.news-thumb {
    height: 200px;
    overflow: hidden;
    position: relative;
    background: var(--bg-secondary);
}

.news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}

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

.news-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.badge {
    display: inline-block;
    background: rgba(37, 99, 235, .08);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: var(--radius-full);
    margin-bottom: 12px;
    align-self: flex-start;
}

.news-body h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.5;
    margin-bottom: 10px;
    transition: var(--transition);
}

.news-card:hover .news-body h3 { color: var(--primary); }

.news-body p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
}

.news-date {
    font-size: 13px;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.read-more {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.read-more i { transition: transform .3s ease; }

.news-card:hover .read-more i { transform: translateX(4px); }

.empty-tips {
    text-align: center;
    padding: 48px 0;
    color: var(--text-muted);
    font-size: 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    grid-column: 1 / -1;
}

/* ===== 服务流程 ===== */
.process-section {
    background: linear-gradient(160deg, var(--bg-dark), #1e3a8a);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.process-section::before {
    content: '';
    position: absolute;
    top: -150px;
    right: -150px;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(6, 182, 212, .15);
    filter: blur(80px);
}

.process-section .section-tag {
    background: rgba(255, 255, 255, .15);
    color: #fff;
}

.process-section h2 { color: #fff; }

.process-section .sub { color: rgba(255, 255, 255, .7); }

.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
    z-index: 2;
}

.step-card {
    text-align: center;
    padding: 40px 24px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .1);
    backdrop-filter: blur(8px);
    transition: var(--transition);
    position: relative;
}

.step-card:hover {
    background: rgba(255, 255, 255, .12);
    transform: translateY(-4px);
}

.step-num {
    font-size: 48px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    margin-bottom: 16px;
}

.step-card h3 {
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 12px;
}

.step-card p {
    font-size: 14px;
    color: rgba(255, 255, 255, .75);
    line-height: 1.7;
}

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

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

.faq-item {
    background: var(--bg-main);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--border);
}

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

.faq-item.active { border-color: var(--primary); box-shadow: var(--shadow-primary); }

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 22px 28px;
    background: none;
    border: none;
    font-size: 17px;
    font-weight: 600;
    color: var(--text-main);
    text-align: left;
    transition: var(--transition);
}

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

.faq-question i {
    font-size: 14px;
    color: var(--text-muted);
    transition: transform .3s ease;
    flex-shrink: 0;
}

.faq-item.active .faq-question i { transform: rotate(180deg); color: var(--primary); }

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .4s ease;
}

.faq-answer p {
    padding: 0 28px 24px;
    font-size: 15px;
    color: var(--text-body);
    line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    padding: 90px 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    bottom: -120px;
    left: -100px;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: rgba(6, 182, 212, .3);
    filter: blur(70px);
}

.cta-section::after {
    content: '';
    position: absolute;
    top: -80px;
    right: -60px;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .1);
    filter: blur(50px);
}

.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 40px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.cta-content p {
    font-size: 18px;
    color: rgba(255, 255, 255, .85);
    margin-bottom: 40px;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* ===== 页脚 ===== */
.site-footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, .75);
    padding: 70px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 50px;
}

.footer-brand .logo {
    color: #fff;
    margin-bottom: 18px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, .65);
    max-width: 280px;
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
}

.footer-links li { margin-bottom: 12px; }

.footer-links a {
    color: rgba(255, 255, 255, .65);
    font-size: 14px;
    transition: var(--transition);
}

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

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    font-size: 14px;
    color: rgba(255, 255, 255, .7);
}

.footer-contact i {
    color: var(--accent);
    width: 18px;
    text-align: center;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .12);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, .45);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .news-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .process-grid { grid-template-columns: repeat(2, 1fr); }
    .hero h1 { font-size: 40px; }
    .section-head h2 { font-size: 32px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    :root { --section-pad: 60px; }
    
    .menu-toggle { display: block; }
    
    .main-nav {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        right: 0;
        background: #fff;
        padding: 12px 20px;
        box-shadow: 0 16px 40px rgba(15, 23, 42, .1);
        border-radius: 0 0 16px 16px;
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
    
    .main-nav.open { display: flex; }
    
    .nav-link {
        display: block;
        width: 100%;
        padding: 12px 16px;
    }
    
    .nav-cta { margin-left: 0; margin-top: 8px; width: 100%; }
    
    .hero { padding: 100px 0 80px; }
    .hero h1 { font-size: 32px; }
    .hero-desc { font-size: 16px; }
    .hero-stats { gap: 24px; }
    .hero-stat .num { font-size: 30px; }
    
    .category-grid { grid-template-columns: 1fr; }
    .category-cover { height: 220px; }
    
    .cta-content h2 { font-size: 30px; }
    .cta-actions { flex-direction: column; align-items: center; }
    .btn-lg { width: 100%; max-width: 300px; }
}

@media (max-width: 520px) {
    .container { padding: 0 20px; }
    
    .features-grid,
    .news-grid,
    .process-grid { grid-template-columns: 1fr; }
    
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    
    .hero h1 { font-size: 28px; }
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; }
    
    .section-head h2 { font-size: 28px; }
    .section-head .sub { font-size: 15px; }
    
    .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: article */
:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #dbeafe;
    --accent: #06b6d4;
    --accent-hover: #0e7490;
    --dark-bg: #0f172a;
    --dark-bg-2: #1e293b;
    --body-bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --radius-sm: 10px;
    --radius: 16px;
    --radius-lg: 24px;
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 8px 30px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.12);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.75;
    color: var(--text);
    background: var(--body-bg);
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: all var(--transition); }
ul, ol { list-style: none; padding: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
.container { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 24px; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 15px;
    line-height: 1.5;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-align: center;
    white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 16px rgba(37, 99, 235, 0.25); }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(37, 99, 235, 0.35); }
.btn-primary:active { transform: translateY(0) scale(0.98); }
.btn-outline { border-color: var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-outline:active { transform: translateY(0) scale(0.98); }
.btn-light { background: #fff; color: var(--dark-bg); }
.btn-light:hover { background: #e2e8f0; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255, 255, 255, 0.2); }
.btn-outline-light { border-color: rgba(255, 255, 255, 0.7); color: #fff; background: transparent; }
.btn-outline-light:hover { background: #fff; color: var(--dark-bg); transform: translateY(-2px); }
.btn-sm { padding: 8px 20px; font-size: 14px; }
.btn-lg { padding: 16px 36px; font-size: 16px; }
.btn-block { width: 100%; justify-content: center; }

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    background: var(--primary-light);
    color: var(--primary);
    line-height: 1.4;
}
.badge.glass {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.25);
}

.tag {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    background: #f1f5f9;
    color: var(--text-light);
    border: 1px solid var(--border);
    transition: all var(--transition);
    cursor: default;
}
.tag:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }

/* ---------- Header ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}
.logo {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.logo i { font-size: 22px; }
.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}
.nav-link {
    position: relative;
    padding: 8px 16px;
    border-radius: 999px;
    font-weight: 500;
    font-size: 15px;
    color: var(--text);
    transition: all var(--transition);
}
.nav-link:hover { color: var(--primary); background: var(--primary-light); }
.nav-link.active { color: var(--primary); background: var(--primary-light); font-weight: 600; }
.nav-cta { margin-left: 12px; }
.mobile-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: #fff;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    color: var(--text);
    transition: all var(--transition);
}
.mobile-toggle:hover { border-color: var(--primary); color: var(--primary); }

/* ---------- Article Hero ---------- */
.article-hero {
    position: relative;
    padding: 88px 0 72px;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(30, 64, 175, 0.78)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    color: #fff;
    border-bottom: 4px solid var(--accent);
}
.article-hero-content { max-width: 860px; }
.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.75);
}
.breadcrumb a { color: rgba(255, 255, 255, 0.85); }
.breadcrumb a:hover { color: #fff; text-decoration: underline; }
.breadcrumb-sep { font-size: 11px; color: rgba(255, 255, 255, 0.5); }
.breadcrumb .current { color: #fff; font-weight: 600; }
.article-hero-title {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: -0.02em;
    margin: 0 0 18px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}
.article-hero-desc {
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.85);
    max-width: 720px;
    margin-bottom: 24px;
}
.article-hero-badges { display: flex; flex-wrap: wrap; gap: 10px; }

/* ---------- Article Shell ---------- */
.article-shell {
    padding: 56px 0 64px;
    background: var(--body-bg);
}
.article-main .article-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 40px 44px;
    border: 1px solid var(--border-light);
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 18px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-light);
}
.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 14px;
    color: var(--text-light);
}
.meta-item i { color: var(--primary); font-size: 14px; }
.article-excerpt {
    background: var(--primary-light);
    border-radius: var(--radius-sm);
    padding: 18px 22px;
    margin-bottom: 24px;
    font-size: 15px;
    line-height: 1.8;
    color: var(--text);
    border-left: 4px solid var(--primary);
}
.article-body { font-size: 15.5px; }
.article-body h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 32px 0 16px;
    padding-left: 14px;
    border-left: 4px solid var(--primary);
    line-height: 1.4;
}
.article-body h3 { font-size: 1.2rem; font-weight: 600; margin: 24px 0 12px; }
.article-body p { margin: 16px 0; line-height: 1.9; color: #334155; }
.article-body ul, .article-body ol { margin: 16px 0; padding-left: 24px; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin: 8px 0; line-height: 1.8; }
.article-body blockquote {
    margin: 24px 0;
    padding: 18px 24px;
    background: #f1f5f9;
    border-left: 4px solid var(--accent);
    border-radius: 0 12px 12px 0;
    color: var(--text-light);
    font-style: italic;
}
.article-body img { border-radius: var(--radius); margin: 24px 0; box-shadow: var(--shadow-md); }
.article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 4px; }
.article-body a:hover { color: var(--primary-hover); }

/* ---------- Tags & Share ---------- */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
}
.article-tags-label { font-size: 14px; font-weight: 600; color: var(--text); }
.article-share {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
}
.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #f1f5f9;
    color: var(--text-light);
    font-size: 15px;
    transition: all var(--transition);
}
.share-btn:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

/* ---------- Article Nav ---------- */
.article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 32px;
}
.article-nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border-radius: var(--radius);
    background: #f8fafc;
    border: 1px solid var(--border);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition);
}
.article-nav-link:hover { border-color: var(--primary); background: var(--primary-light); transform: translateY(-2px); }
.article-nav-link.next { justify-content: flex-end; text-align: right; }
.article-nav-link i { color: var(--primary); }

/* ---------- Empty State ---------- */
.empty-state {
    text-align: center;
    padding: 60px 24px;
}
.empty-icon {
    width: 88px;
    height: 88px;
    margin: 0 auto 24px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: var(--primary);
}
.empty-state h2 { font-size: 24px; font-weight: 700; margin-bottom: 12px; }
.empty-state p { color: var(--text-light); margin-bottom: 28px; }

/* ---------- Sidebar ---------- */
.article-side .sidebar-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 26px 26px;
    margin-bottom: 24px;
    border: 1px solid var(--border-light);
}
.sidebar-title {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 8px;
}
.sidebar-title i { color: var(--primary); font-size: 15px; }
.sidebar-links li { margin-bottom: 4px; }
.sidebar-links a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 14px;
    border-radius: var(--radius-sm);
    font-size: 14.5px;
    color: var(--text);
    transition: all var(--transition);
    border: 1px solid transparent;
}
.sidebar-links a:hover {
    background: var(--primary-light);
    color: var(--primary);
    padding-left: 18px;
    border-color: rgba(37, 99, 235, 0.1);
}
.sidebar-links a i { font-size: 11px; color: var(--text-muted); transition: all var(--transition); }
.sidebar-links a:hover i { color: var(--primary); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.sidebar-cta {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    border: none !important;
    position: relative;
    overflow: hidden;
}
.sidebar-cta::after {
    content: "";
    position: absolute;
    top: -40%;
    right: -40%;
    width: 140px;
    height: 140px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
}
.sidebar-cta h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; position: relative; z-index: 1; }
.sidebar-cta p { font-size: 14px; line-height: 1.7; color: rgba(255, 255, 255, 0.9); margin-bottom: 18px; position: relative; z-index: 1; }
.sidebar-cta .btn { position: relative; z-index: 1; background: #fff; color: var(--primary); }
.sidebar-cta .btn:hover { background: #e2e8f0; }
.sidebar-cta .sidebar-note {
    display: block;
    font-size: 12.5px;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 12px;
    text-align: center;
}

/* ---------- Related ---------- */
.related-section {
    padding: 64px 0;
    background: #fff;
    border-top: 1px solid var(--border-light);
}
.section-head { text-align: center; margin-bottom: 40px; }
.section-head h2 {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -0.01em;
    margin-bottom: 8px;
}
.section-head p { color: var(--text-light); font-size: 15px; max-width: 560px; margin: 0 auto; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.related-img { position: relative; overflow: hidden; aspect-ratio: 16 / 9; }
.related-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.related-card:hover .related-img img { transform: scale(1.06); }
.related-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.related-body h3 { font-size: 17px; font-weight: 700; line-height: 1.5; margin-bottom: 8px; }
.related-body p { font-size: 14px; color: var(--text-light); line-height: 1.7; margin-bottom: 14px; flex: 1; }
.related-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
}
.related-link:hover { gap: 12px; }

/* ---------- CTA ---------- */
.cta-section {
    padding: 72px 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.94), rgba(37, 99, 235, 0.88)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    color: #fff;
}
.cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}
.cta-content { flex: 1; min-width: 280px; }
.cta-content h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; margin-bottom: 12px; line-height: 1.35; }
.cta-content p { font-size: 15px; color: rgba(255, 255, 255, 0.85); max-width: 560px; }
.cta-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---------- Footer ---------- */
.site-footer {
    background: var(--dark-bg);
    color: #cbd5e1;
    padding: 64px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.2fr;
    gap: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand .logo {
    font-size: 26px;
    margin-bottom: 14px;
    display: inline-block;
}
.footer-brand p { font-size: 14px; line-height: 1.8; color: #94a3b8; max-width: 380px; }
.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: #f1f5f9;
    margin-bottom: 18px;
    letter-spacing: 0.02em;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
    font-size: 14px;
    color: #94a3b8;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition);
}
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-contact li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: #94a3b8;
    margin-bottom: 12px;
}
.footer-contact i { color: var(--accent); width: 16px; text-align: center; }
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    padding: 24px 0;
    font-size: 13px;
    color: #64748b;
}
.footer-bottom a { color: #94a3b8; }
.footer-bottom a:hover { color: #fff; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .article-shell { padding: 40px 0 48px; }
    .article-main .article-card { padding: 32px 28px; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
    .header-inner { height: 64px; }
    .main-nav {
        position: absolute;
        top: 100%;
        left: 12px;
        right: 12px;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
        border-radius: 0 0 16px 16px;
        box-shadow: 0 20px 40px rgba(15, 23, 42, 0.14);
        display: none;
        border: 1px solid var(--border-light);
        border-top: none;
        z-index: 999;
    }
    .main-nav.open { display: flex; }
    .nav-link { padding: 12px 16px; text-align: center; border-radius: 10px; }
    .nav-link.active { background: var(--primary-light); }
    .nav-cta { margin: 8px 0 0; justify-content: center; }
    .mobile-toggle { display: inline-flex; }
    .article-hero { padding: 64px 0 52px; }
    .article-hero-title { font-size: 1.6rem; }
    .article-shell { padding: 32px 0 40px; }
    .article-main .article-card { padding: 24px 20px; border-radius: 16px; }
    .article-meta { gap: 12px; }
    .article-nav { grid-template-columns: 1fr; }
    .cta-inner { flex-direction: column; align-items: flex-start; }
    .related-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; text-align: center; justify-content: center; }
}

@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .logo { font-size: 22px; }
    .article-main .article-card { padding: 20px 16px; }
    .article-body { font-size: 15px; }
    .article-body h2 { font-size: 1.3rem; }
    .article-hero-title { font-size: 1.4rem; }
    .article-meta { flex-direction: column; align-items: flex-start; gap: 8px; }
    .related-body { padding: 18px; }
    .cta-actions .btn { width: 100%; }
}

/* roulang page: category1 */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #dbeafe;
            --accent: #06b6d4;
            --bg: #f8fafc;
            --surface: #ffffff;
            --bg-dark: #0b1220;
            --bg-dark-2: #111a2e;
            --text: #0f172a;
            --text-2: #334155;
            --muted: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .08);
            --shadow: 0 12px 32px rgba(15, 23, 42, .08), 0 2px 6px rgba(15, 23, 42, .04);
            --shadow-lg: 0 24px 60px rgba(15, 23, 42, .12);
            --transition: .25s ease;
            --font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", system-ui, -apple-system, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        a:hover {
            color: var(--primary-dark);
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5 {
            margin: 0;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }

        p {
            margin: 0;
        }

        a:focus-visible,
        button:focus-visible,
        .btn:focus-visible {
            outline: 3px solid rgba(37, 99, 235, .4);
            outline-offset: 2px;
        }

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

        .section {
            padding: 96px 0;
        }

        .section-eyebrow {
            display: inline-block;
            background: rgba(37, 99, 235, .08);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: .4px;
            margin-bottom: 16px;
        }

        .section h2 {
            font-size: 36px;
            line-height: 1.25;
            letter-spacing: -.5px;
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all var(--transition);
            line-height: 1.4;
            font-family: var(--font-family);
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 20px rgba(37, 99, 235, .22);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(37, 99, 235, .3);
            color: #fff;
        }

        .btn-outline {
            border-color: rgba(255, 255, 255, .5);
            color: #fff;
            background: transparent;
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, .12);
            color: #fff;
        }

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

        .btn-light:hover {
            transform: translateY(-2px);
            color: var(--primary);
        }

        .btn-sm {
            padding: 9px 18px;
            font-size: 14px;
            border-radius: 10px;
        }

        .btn-lg {
            padding: 16px 32px;
            font-size: 17px;
            border-radius: 14px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .86);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 32px;
        }

        .logo {
            font-size: 26px;
            font-weight: 800;
            letter-spacing: -.5px;
            color: var(--text);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .logo::before {
            content: "";
            width: 10px;
            height: 10px;
            border-radius: 3px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            box-shadow: 0 0 12px rgba(37, 99, 235, .45);
        }

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

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-link {
            position: relative;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-2);
            padding: 6px 2px;
        }

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

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

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .nav-cta {
            margin-left: 8px;
        }

        .nav-status {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 6px 12px;
            border-radius: 999px;
            white-space: nowrap;
        }

        .nav-status i {
            font-size: 8px;
            color: #22c55e;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 18px;
            color: var(--text-2);
            padding: 8px 12px;
            cursor: pointer;
            transition: all var(--transition);
        }

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

        .page-banner {
            position: relative;
            padding: 120px 0 80px;
            background: linear-gradient(135deg, rgba(15, 23, 42, .92), rgba(37, 99, 235, .74)), url("/assets/images/backpic/back-1.png") center / cover no-repeat;
            color: #fff;
            overflow: hidden;
        }

        .page-banner::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 80% 20%, rgba(6, 182, 212, .25), transparent 50%);
        }

        .page-banner .container,
        .page-banner .grid-container {
            position: relative;
            z-index: 2;
        }

        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .16);
            border: 1px solid rgba(255, 255, 255, .25);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .banner-tag i {
            color: #67e8f9;
        }

        .page-banner h1 {
            color: #fff;
            font-size: 52px;
            line-height: 1.15;
            letter-spacing: -1px;
            margin-bottom: 20px;
        }

        .page-banner p {
            color: rgba(255, 255, 255, .85);
            max-width: 640px;
            font-size: 18px;
            margin-bottom: 32px;
        }

        .banner-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .intro-section {
            background: var(--surface);
        }

        .intro-media {
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .intro-media img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            transition: transform .6s ease;
        }

        .intro-media:hover img {
            transform: scale(1.03);
        }

        .intro-content {
            padding: 12px 0;
        }

        .intro-content h2 {
            margin-bottom: 18px;
        }

        .intro-content .lead {
            color: var(--text-2);
            font-size: 16px;
            line-height: 1.9;
        }

        .feature-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin: 28px 0 32px;
        }

        .feature-list li {
            position: relative;
            padding-left: 32px;
            color: var(--text-2);
            font-size: 15px;
            line-height: 1.65;
        }

        .feature-list li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 3px;
            width: 20px;
            height: 20px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
        }

        .process-section {
            background: linear-gradient(160deg, var(--bg-dark), var(--bg-dark-2));
            color: #fff;
        }

        .process-section .section-eyebrow {
            background: rgba(56, 189, 248, .12);
            color: #38bdf8;
        }

        .process-section h2 {
            color: #fff;
        }

        .process-section .section-head p {
            color: rgba(255, 255, 255, .65);
            margin-top: 12px;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 24px;
        }

        .process-step {
            position: relative;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 20px;
            padding: 28px 22px;
            transition: all var(--transition);
        }

        .process-step:hover {
            transform: translateY(-6px);
            border-color: rgba(56, 189, 248, .4);
            background: rgba(255, 255, 255, .08);
            box-shadow: 0 18px 40px rgba(0, 0, 0, .2);
        }

        .step-num {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(56, 189, 248, .18), rgba(129, 140, 248, .18));
            border: 1px solid rgba(56, 189, 248, .35);
            color: #7dd3fc;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .step-title {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .step-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, .68);
            line-height: 1.75;
        }

        .module-section {
            background: var(--bg);
        }

        .module-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
            height: 100%;
            margin-bottom: 28px;
        }

        .module-card::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            width: 3px;
            height: 100%;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity var(--transition);
        }

        .module-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(37, 99, 235, .28);
        }

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

        .module-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, var(--primary-light), #e0f2fe);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
        }

        .module-card h3 {
            font-size: 19px;
            margin-bottom: 10px;
        }

        .module-card p {
            color: var(--muted);
            font-size: 15px;
            line-height: 1.75;
        }

        .article-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
            margin-bottom: 28px;
        }

        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(37, 99, 235, .2);
        }

        .article-cover {
            position: relative;
            height: 190px;
            overflow: hidden;
        }

        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }

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

        .article-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 5px 12px;
            border-radius: 999px;
            box-shadow: var(--shadow-sm);
        }

        .article-body {
            padding: 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-body h3 {
            font-size: 17px;
            line-height: 1.5;
            margin-bottom: 12px;
        }

        .article-body h3 a {
            color: var(--text);
            transition: color var(--transition);
        }

        .article-body h3 a:hover {
            color: var(--primary);
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--muted);
            font-size: 13px;
            margin-top: auto;
            padding-top: 14px;
            border-top: 1px solid var(--border);
        }

        .article-meta i {
            color: var(--accent);
            margin-right: 4px;
        }

        .stats-section {
            background: linear-gradient(135deg, rgba(15, 23, 42, .94), rgba(37, 99, 235, .78)), url("/assets/images/backpic/back-2.png") center / cover no-repeat;
            padding: 88px 0;
            color: #fff;
        }

        .stats-section .section-eyebrow {
            background: rgba(255, 255, 255, .12);
            color: #fff;
        }

        .stats-section h2 {
            color: #fff;
        }

        .stats-section .section-head p {
            color: rgba(255, 255, 255, .7);
            margin-top: 12px;
        }

        .stat-item {
            text-align: center;
            padding: 20px;
        }

        .stat-num {
            font-size: 48px;
            font-weight: 800;
            line-height: 1;
            background: linear-gradient(120deg, #fff, #bae6fd);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 10px;
        }

        .stat-label {
            font-size: 15px;
            color: rgba(255, 255, 255, .75);
        }

        .faq-section {
            background: var(--surface);
        }

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

        .faq-item {
            border: 1px solid var(--border);
            border-radius: 16px;
            background: var(--bg);
            overflow: hidden;
            margin-bottom: 14px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
        }

        .faq-item[open] {
            box-shadow: var(--shadow);
        }

        .faq-item summary {
            cursor: pointer;
            list-style: none;
            padding: 20px 24px;
            font-weight: 600;
            font-size: 17px;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 14px;
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 24px 22px;
            color: var(--text-2);
            line-height: 1.8;
            font-size: 15px;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        .cta-section {
            background: linear-gradient(135deg, var(--primary), #1e40af);
            padding: 96px 0;
            text-align: center;
        }

        .cta-section h2 {
            color: #fff;
            font-size: 38px;
            margin-bottom: 16px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, .85);
            max-width: 620px;
            margin: 0 auto 36px;
            font-size: 17px;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .cta-section .btn-outline {
            border-color: rgba(255, 255, 255, .6);
        }

        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, .72);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .6);
            max-width: 360px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
        }

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

        .footer-links a {
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            transition: color var(--transition);
        }

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

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            margin-bottom: 12px;
        }

        .footer-contact i {
            width: 18px;
            color: #38bdf8;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 0;
            border-top: 1px solid rgba(255, 255, 255, .1);
            color: rgba(255, 255, 255, .45);
            font-size: 13px;
            flex-wrap: wrap;
        }

        @media (max-width: 1024px) {
            .section {
                padding: 72px 0;
            }

            .nav-status {
                display: none;
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .page-banner h1 {
                font-size: 42px;
            }

            .section h2 {
                font-size: 30px;
            }

            .intro-media img {
                height: 360px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .main-nav {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow);
                gap: 6px;
                display: none;
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav .nav-link {
                display: block;
                padding: 10px 0;
                width: 100%;
            }

            .main-nav .nav-cta {
                margin: 8px 0 0;
            }

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

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

            .page-banner {
                padding: 80px 0 56px;
            }

            .page-banner h1 {
                font-size: 34px;
            }

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

            .feature-list {
                grid-template-columns: 1fr;
            }

            .intro-media img {
                height: 280px;
            }
        }

        @media (max-width: 520px) {
            .section {
                padding: 56px 0;
            }

            .container,
            .grid-container {
                padding-left: 18px;
                padding-right: 18px;
            }

            .stat-num {
                font-size: 36px;
            }

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

            .section h2 {
                font-size: 26px;
            }

            .cta-section h2 {
                font-size: 28px;
            }

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

            .article-body {
                padding: 18px;
            }

            .faq-item summary {
                font-size: 15px;
                padding: 18px 18px;
            }

            .faq-answer {
                padding: 0 18px 18px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0f4c81;
            --primary-dark: #0a3d62;
            --primary-light: #1d6ab0;
            --accent: #00bfa5;
            --accent-light: #2dd7bc;
            --dark-bg: #0b1e2d;
            --dark-bg-light: #123047;
            --bg: #f5f9fc;
            --white: #ffffff;
            --text: #12293a;
            --text-muted: #5b7485;
            --border: #e1ebf0;
            --radius: 14px;
            --radius-sm: 10px;
            --radius-lg: 22px;
            --shadow: 0 12px 34px rgba(11, 46, 73, 0.08);
            --shadow-lg: 0 18px 42px rgba(11, 46, 73, 0.13);
            --transition: all 0.28s ease;
            --content-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        a:hover {
            color: var(--primary-light);
        }

        ul,
        ol,
        p {
            margin: 0 0 1rem;
        }

        h1,
        h2,
        h3,
        h4,
        h5 {
            margin: 0 0 0.6em;
            line-height: 1.35;
            font-weight: 700;
            color: var(--text);
        }

        h1 {
            font-size: 46px;
        }

        h2 {
            font-size: 34px;
        }

        h3 {
            font-size: 22px;
        }

        .container {
            width: 100%;
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 90px 0;
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 58px;
        }

        .section-head .eyebrow {
            display: inline-block;
            background: rgba(0, 191, 165, 0.12);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1.5px;
            padding: 6px 16px;
            border-radius: 40px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        .section-head h2 {
            margin-bottom: 16px;
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 17px;
            margin: 0;
        }

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

        /* ========== Buttons ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            border: 2px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
            line-height: 1.2;
            background: transparent;
        }

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

        .btn-primary:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            color: #fff;
            box-shadow: 0 8px 24px rgba(15, 76, 129, 0.3);
            transform: translateY(-2px);
        }

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

        .btn-light:hover {
            background: rgba(255, 255, 255, 0.9);
            color: var(--primary);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
            transform: translateY(-2px);
        }

        .btn-outline {
            border-color: rgba(255, 255, 255, 0.7);
            color: #fff;
        }

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

        .btn-sm {
            padding: 9px 22px;
            font-size: 14px;
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 200;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 16px rgba(11, 46, 73, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .logo {
            font-size: 26px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            line-height: 1;
        }

        .logo i {
            color: var(--accent);
            font-size: 22px;
        }

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

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 9px 16px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
        }

        .nav-link:hover {
            background: rgba(15, 76, 129, 0.08);
            color: var(--primary);
        }

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-cta {
            margin-left: 10px;
        }

        .menu-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 10px 14px;
            font-size: 18px;
            color: var(--primary);
            cursor: pointer;
            transition: var(--transition);
        }

        .menu-toggle:hover {
            background: rgba(15, 76, 129, 0.08);
            border-color: transparent;
        }

        /* ========== Page Hero ========== */
        .page-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 110px 0 100px;
            color: #fff;
            text-align: center;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(9, 30, 47, 0.92) 0%, rgba(15, 76, 129, 0.78) 100%);
            z-index: 1;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 40px;
            padding: 7px 18px;
            font-size: 13px;
            letter-spacing: 1px;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }

        .hero-badge i {
            color: var(--accent-light);
        }

        .page-hero h1 {
            color: #fff;
            font-size: 48px;
            max-width: 800px;
            margin: 0 auto 18px;
            letter-spacing: 1px;
        }

        .page-hero p {
            font-size: 18px;
            max-width: 680px;
            margin: 0 auto 34px;
            color: rgba(255, 255, 255, 0.86);
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 30px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }

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

        .breadcrumb i {
            font-size: 11px;
            opacity: 0.7;
        }

        /* ========== Filter Tabs ========== */
        .filter-section {
            padding: 60px 0 20px;
        }

        .filter-tabs {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .filter-tab {
            padding: 10px 24px;
            border-radius: 50px;
            border: 1px solid var(--border);
            background: #fff;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            cursor: pointer;
            transition: var(--transition);
        }

        .filter-tab:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .filter-tab.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 6px 18px rgba(15, 76, 129, 0.25);
        }

        /* ========== Case Cards ========== */
        .cases-section {
            padding: 50px 0 90px;
        }

        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid rgba(225, 235, 240, 0.6);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .case-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(15, 76, 129, 0.15);
        }

        .case-media {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--dark-bg);
        }

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

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

        .case-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 65%, rgba(11, 30, 45, 0.75) 100%);
        }

        .case-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 3;
            background: rgba(255, 255, 255, 0.94);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 30px;
            backdrop-filter: blur(4px);
            letter-spacing: 0.5px;
        }

        .case-metric {
            position: absolute;
            bottom: 14px;
            left: 16px;
            z-index: 3;
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 191, 165, 0.85);
            padding: 4px 12px;
            border-radius: 30px;
            backdrop-filter: blur(4px);
        }

        .case-body {
            padding: 24px 26px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .case-body h3 {
            font-size: 19px;
            margin-bottom: 10px;
        }

        .case-body p {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 18px;
            flex: 1;
        }

        .case-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border);
            padding-top: 16px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .case-meta .case-link {
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .case-meta .case-link:hover {
            color: var(--accent);
        }

        /* ========== Stats ========== */
        .stats-section {
            background: var(--dark-bg);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            position: relative;
            padding: 80px 0;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(11, 30, 45, 0.94) 0%, rgba(15, 76, 129, 0.82) 100%);
        }

        .stats-section .container {
            position: relative;
            z-index: 2;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }

        .stat-item {
            padding: 36px 22px;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(6px);
            transition: var(--transition);
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(0, 191, 165, 0.35);
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 42px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            display: block;
        }

        .stat-number span {
            color: var(--accent-light);
        }

        .stat-label {
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            margin-top: 6px;
        }

        /* ========== Process ========== */
        .process-section {
            background: #fff;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 26px;
        }

        .process-step {
            position: relative;
            padding: 34px 24px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            text-align: center;
            transition: var(--transition);
        }

        .process-step:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
            border-color: rgba(15, 76, 129, 0.2);
        }

        .process-num {
            display: inline-flex;
            width: 52px;
            height: 52px;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            border-radius: 16px;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 18px;
            box-shadow: 0 8px 20px rgba(15, 76, 129, 0.3);
        }

        .process-step h3 {
            font-size: 17px;
            margin-bottom: 8px;
        }

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

        /* ========== Testimonials ========== */
        .testimonials-section {
            background: var(--bg);
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow);
            border: 1px solid rgba(225, 235, 240, 0.6);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .testimonial-stars {
            color: #f5b301;
            font-size: 14px;
            margin-bottom: 16px;
            letter-spacing: 2px;
        }

        .testimonial-card blockquote {
            margin: 0 0 22px;
            color: var(--text);
            font-size: 15px;
            line-height: 1.8;
            flex: 1;
            border: none;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 14px;
            border-top: 1px solid var(--border);
            padding-top: 18px;
        }

        .testimonial-author .avatar {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .testimonial-author .author-name {
            font-weight: 600;
            font-size: 15px;
            color: var(--text);
        }

        .testimonial-author .author-role {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: #fff;
        }

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

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

        .faq-item:hover {
            border-color: rgba(15, 76, 129, 0.22);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
            user-select: none;
        }

        .faq-question i {
            color: var(--primary);
            transition: transform 0.3s ease;
            font-size: 14px;
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-bottom: 22px;
        }

        /* ========== CTA / Contact ========== */
        .cta-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 100px 0;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 76, 129, 0.94), rgba(11, 30, 45, 0.9));
        }

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

        .cta-grid {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 56px;
            align-items: center;
        }

        .cta-content h2 {
            color: #fff;
            font-size: 38px;
            margin-bottom: 16px;
        }

        .cta-content h2 span {
            color: var(--accent-light);
        }

        .cta-content p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            line-height: 1.9;
            margin-bottom: 26px;
        }

        .cta-points {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 12px;
        }

        .cta-points li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.92);
            font-size: 15px;
        }

        .cta-points li i {
            color: var(--accent-light);
            width: 22px;
            text-align: center;
        }

        .contact-form {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 36px 34px;
            box-shadow: var(--shadow-lg);
        }

        .contact-form h3 {
            font-size: 22px;
            margin-bottom: 8px;
        }

        .contact-form .form-sub {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text);
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: 10px;
            font-size: 15px;
            font-family: inherit;
            color: var(--text);
            background: var(--bg);
            transition: border-color 0.25s, box-shadow 0.25s;
            outline: none;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.12);
            background: #fff;
        }

        .form-group textarea {
            min-height: 90px;
            resize: vertical;
        }

        .form-success {
            background: rgba(0, 191, 165, 0.1);
            border: 1px solid rgba(0, 191, 165, 0.35);
            color: #0a8a74;
            border-radius: 10px;
            padding: 12px 16px;
            font-size: 14px;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #0b1e2d;
            color: rgba(255, 255, 255, 0.78);
            padding: 70px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1.2fr;
            gap: 44px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            max-width: 340px;
            line-height: 1.8;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 18px;
            font-weight: 600;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition);
        }

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

        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 12px;
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-contact li i {
            width: 22px;
            color: var(--accent-light);
            text-align: center;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding: 22px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom p {
            margin: 0;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            h1 {
                font-size: 38px;
            }

            h2 {
                font-size: 30px;
            }

            .section {
                padding: 70px 0;
            }

            .case-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 22px;
            }

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

            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .cta-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }

            .menu-toggle {
                display: inline-flex;
            }

            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px;
                gap: 4px;
                box-shadow: 0 20px 34px rgba(11, 46, 73, 0.12);
                border-top: 1px solid var(--border);
                border-radius: 0 0 18px 18px;
            }

            .main-nav.open {
                display: flex;
            }

            .nav-link {
                padding: 13px 16px;
                font-size: 15px;
            }

            .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                justify-content: center;
            }

            .section {
                padding: 56px 0;
            }

            .section-head {
                margin-bottom: 42px;
            }

            .page-hero {
                padding: 78px 0 68px;
            }

            .page-hero h1 {
                font-size: 32px;
            }

            .page-hero p {
                font-size: 16px;
            }

            .hero-actions .btn {
                padding: 11px 24px;
                font-size: 14px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .stat-number {
                font-size: 32px;
            }

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

            .testimonial-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .cta-grid {
                gap: 34px;
            }

            .contact-form {
                padding: 28px 22px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 36px;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 27px;
            }

            .hero-actions {
                flex-direction: column;
                width: 100%;
                max-width: 280px;
                margin: 0 auto;
            }

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

            .case-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }

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

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .stat-item {
                padding: 26px 14px;
            }

            .stat-number {
                font-size: 28px;
            }

            .filter-tabs {
                gap: 8px;
            }

            .filter-tab {
                padding: 8px 16px;
                font-size: 13px;
            }

            .cta-content h2 {
                font-size: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }