/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
    --primary: #0b2a4a;
    --primary-light: #134276;
    --primary-dark: #071d33;
    --accent: #d4a843;
    --accent-light: #e8c76a;
    --accent-dark: #b8912e;
    --bg-body: #f5f7fb;
    --bg-card: #ffffff;
    --bg-dark: #0b1a2e;
    --bg-section-alt: #eef2f8;
    --text-primary: #1a2a3a;
    --text-secondary: #4a5a6a;
    --text-weak: #8a9aaa;
    --text-white: #f0f4f8;
    --border-color: #e2e8f0;
    --border-light: rgba(212, 168, 67, 0.25);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --shadow-sm: 0 2px 8px rgba(11, 42, 74, 0.06);
    --shadow-md: 0 8px 28px rgba(11, 42, 74, 0.10);
    --shadow-lg: 0 20px 60px rgba(11, 42, 74, 0.14);
    --shadow-accent: 0 4px 20px rgba(212, 168, 67, 0.30);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
    --transition: all 0.30s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
    --header-height: 72px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
    font-family: var(--font-family);
    background: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea { font-family: inherit; outline: none; border: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-primary); }
h1 { font-size: 2.8rem; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.2rem; }
p { margin-bottom: 0.8rem; color: var(--text-secondary); }

/* ===== 容器 ===== */
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 880px; }
.section { padding: 80px 0; }
.section-alt { background: var(--bg-section-alt); }
.section-dark { background: var(--bg-dark); color: var(--text-white); }
.section-dark h2, .section-dark h3, .section-dark .section-subtitle { color: var(--text-white); }
.section-dark p { color: rgba(240, 244, 248, 0.78); }
.section-title { text-align: center; margin-bottom: 12px; font-weight: 800; letter-spacing: -0.02em; }
.section-subtitle { text-align: center; color: var(--text-secondary); max-width: 640px; margin: 0 auto 48px auto; font-size: 1.1rem; line-height: 1.7; }
.section-dark .section-subtitle { color: rgba(240, 244, 248, 0.7); }

/* ===== 浮动 Dock 导航 ===== */
.site-header {
    position: fixed; top: 16px; left: 0; right: 0; z-index: 1000;
    display: flex; justify-content: center; pointer-events: none;
    padding: 0 20px;
}
.nav-dock {
    pointer-events: auto;
    display: flex; align-items: center; justify-content: space-between;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(18px) saturate(1.5);
    -webkit-backdrop-filter: blur(18px) saturate(1.5);
    border-radius: 60px;
    padding: 8px 24px 8px 28px;
    box-shadow: 0 4px 32px rgba(11, 42, 74, 0.10), 0 1px 4px rgba(11, 42, 74, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.5);
    max-width: 760px; width: 100%;
    transition: var(--transition);
}
.nav-dock:hover { box-shadow: 0 8px 48px rgba(11, 42, 74, 0.14); }
.nav-logo {
    font-size: 1.25rem; font-weight: 800; color: var(--primary); letter-spacing: -0.01em;
    display: flex; align-items: center; gap: 10px; white-space: nowrap;
}
.nav-logo i { color: var(--accent); font-size: 1.3rem; }
.nav-logo span { background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
    padding: 8px 18px; border-radius: 40px; font-size: 0.9rem; font-weight: 500;
    color: var(--text-secondary); transition: var(--transition); white-space: nowrap;
}
.nav-links a:hover { background: rgba(11, 42, 74, 0.06); color: var(--primary); }
.nav-links a.active { background: var(--primary); color: #fff; box-shadow: 0 2px 12px rgba(11, 42, 74, 0.18); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-search {
    background: rgba(11, 42, 74, 0.05); border-radius: 40px; padding: 6px 16px;
    display: flex; align-items: center; gap: 8px; transition: var(--transition);
    border: 1px solid transparent;
}
.nav-search:focus-within { background: #fff; border-color: var(--border-light); box-shadow: 0 0 0 3px rgba(212, 168, 67, 0.12); }
.nav-search input { background: transparent; border: none; font-size: 0.85rem; color: var(--text-primary); width: 120px; padding: 4px 0; }
.nav-search input::placeholder { color: var(--text-weak); }
.nav-search i { color: var(--text-weak); font-size: 0.85rem; }
.nav-cta {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: var(--primary-dark) !important;
    padding: 8px 22px; border-radius: 40px; font-weight: 700; font-size: 0.85rem;
    box-shadow: var(--shadow-accent); transition: var(--transition); white-space: nowrap;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 8px 28px rgba(212, 168, 67, 0.40); }
.mobile-toggle { display: none; background: none; border: none; font-size: 1.4rem; color: var(--primary); padding: 4px 8px; cursor: pointer; }

/* ===== Hero ===== */
.hero {
    position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    overflow: hidden; padding: 120px 0 80px;
}
.hero-bg {
    position: absolute; inset: 0; z-index: 0;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover; background-position: center; background-repeat: no-repeat;
    opacity: 0.20; mix-blend-mode: overlay;
}
.hero-pattern {
    position: absolute; inset: 0; z-index: 1;
    background-image: radial-gradient(circle at 25% 40%, rgba(212, 168, 67, 0.08) 0%, transparent 50%),
                      radial-gradient(circle at 75% 60%, rgba(255,255,255,0.04) 0%, transparent 50%);
}
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 800px; padding: 0 24px; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(212, 168, 67, 0.15); color: var(--accent-light); padding: 6px 20px; border-radius: 40px;
    font-size: 0.85rem; font-weight: 600; letter-spacing: 0.3px; margin-bottom: 28px;
    border: 1px solid rgba(212, 168, 67, 0.2); backdrop-filter: blur(4px);
}
.hero-badge i { font-size: 0.75rem; }
.hero h1 {
    font-size: 3.6rem; font-weight: 900; color: #fff; letter-spacing: -0.03em;
    line-height: 1.15; margin-bottom: 20px; text-shadow: 0 2px 30px rgba(0,0,0,0.2);
}
.hero h1 span { background: linear-gradient(135deg, var(--accent-light), #f5e3a0); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p {
    font-size: 1.2rem; color: rgba(240, 244, 248, 0.78); max-width: 600px; margin: 0 auto 36px;
    line-height: 1.7;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-primary {
    display: inline-flex; align-items: center; gap: 10px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: var(--primary-dark);
    padding: 16px 36px; border-radius: 60px; font-weight: 700; font-size: 1rem;
    box-shadow: 0 8px 32px rgba(212, 168, 67, 0.30); transition: var(--transition); border: none;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 44px rgba(212, 168, 67, 0.40); color: var(--primary-dark); }
.btn-outline {
    display: inline-flex; align-items: center; gap: 10px;
    background: rgba(255,255,255,0.08); color: #fff; padding: 16px 36px; border-radius: 60px;
    font-weight: 600; font-size: 1rem; border: 1.5px solid rgba(255,255,255,0.2);
    backdrop-filter: blur(4px); transition: var(--transition);
}
.btn-outline:hover { background: rgba(255,255,255,0.15); border-color: rgba(255,255,255,0.4); color: #fff; transform: translateY(-3px); }
.hero-stats { display: flex; gap: 40px; justify-content: center; margin-top: 56px; flex-wrap: wrap; }
.hero-stat { text-align: center; }
.hero-stat-number { font-size: 2rem; font-weight: 800; color: #fff; letter-spacing: -0.02em; }
.hero-stat-label { font-size: 0.85rem; color: rgba(240, 244, 248, 0.6); margin-top: 2px; }

/* ===== 平台简介 ===== */
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.intro-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.intro-image img { width: 100%; height: 100%; object-fit: cover; min-height: 320px; }
.intro-text h2 { margin-bottom: 16px; }
.intro-text p { margin-bottom: 16px; line-height: 1.8; }
.intro-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.tag {
    display: inline-flex; align-items: center; gap: 6px;
    background: rgba(11, 42, 74, 0.06); color: var(--text-secondary); padding: 6px 16px;
    border-radius: 40px; font-size: 0.85rem; font-weight: 500; transition: var(--transition);
}
.tag i { color: var(--accent); font-size: 0.75rem; }
.tag:hover { background: rgba(11, 42, 74, 0.10); color: var(--primary); }

/* ===== 核心特色 ===== */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feature-card {
    background: var(--bg-card); border-radius: var(--radius-md); padding: 40px 32px;
    box-shadow: var(--shadow-sm); border: 1px solid var(--border-color); transition: var(--transition);
    text-align: center;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--border-light); }
.feature-icon {
    width: 64px; height: 64px; border-radius: 20px; display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px; font-size: 1.6rem;
    background: rgba(212, 168, 67, 0.10); color: var(--accent-dark);
}
.feature-card h3 { margin-bottom: 10px; font-size: 1.2rem; }
.feature-card p { font-size: 0.95rem; margin-bottom: 0; }

/* ===== 分类入口 ===== */
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.category-card {
    position: relative; border-radius: var(--radius-md); overflow: hidden;
    box-shadow: var(--shadow-sm); transition: var(--transition); background: var(--bg-card);
    border: 1px solid var(--border-color); cursor: pointer;
}
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.category-card img { width: 100%; height: 200px; object-fit: cover; }
.category-card-body { padding: 24px; }
.category-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.category-card p { font-size: 0.9rem; margin-bottom: 16px; color: var(--text-secondary); }
.category-card .btn-link {
    display: inline-flex; align-items: center; gap: 6px; color: var(--accent-dark); font-weight: 600; font-size: 0.9rem;
}
.category-card .btn-link i { transition: var(--transition); font-size: 0.75rem; }
.category-card:hover .btn-link i { transform: translateX(4px); }

/* ===== 最新资讯 ===== */
.posts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.post-card {
    background: var(--bg-card); border-radius: var(--radius-md); overflow: hidden;
    box-shadow: var(--shadow-sm); border: 1px solid var(--border-color); transition: var(--transition);
}
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.post-card img { width: 100%; height: 180px; object-fit: cover; }
.post-card-body { padding: 22px 24px 24px; }
.post-meta { display: flex; align-items: center; gap: 14px; font-size: 0.8rem; color: var(--text-weak); margin-bottom: 10px; }
.post-meta .post-category { background: rgba(212, 168, 67, 0.12); color: var(--accent-dark); padding: 2px 12px; border-radius: 30px; font-weight: 600; font-size: 0.75rem; }
.post-card h3 { font-size: 1.05rem; margin-bottom: 8px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-card p { font-size: 0.88rem; color: var(--text-secondary); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-empty { grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--text-weak); font-size: 1rem; background: var(--bg-card); border-radius: var(--radius-md); border: 1px dashed var(--border-color); }

/* ===== 数据统计 ===== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.stat-card {
    background: rgba(255,255,255,0.06); border-radius: var(--radius-md); padding: 36px 24px;
    text-align: center; border: 1px solid rgba(255,255,255,0.06); backdrop-filter: blur(4px);
    transition: var(--transition);
}
.stat-card:hover { background: rgba(255,255,255,0.10); border-color: rgba(212, 168, 67, 0.15); transform: translateY(-4px); }
.stat-card .stat-number { font-size: 2.4rem; font-weight: 800; color: var(--accent-light); margin-bottom: 4px; }
.stat-card .stat-label { font-size: 0.9rem; color: rgba(240, 244, 248, 0.65); }

/* ===== 使用流程 ===== */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.step-card { text-align: center; position: relative; }
.step-number {
    width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
    margin: 0 auto 18px; font-size: 1.3rem; font-weight: 800;
    background: var(--primary); color: #fff; box-shadow: 0 4px 20px rgba(11, 42, 74, 0.15);
}
.step-card h4 { font-size: 1.05rem; margin-bottom: 8px; }
.step-card p { font-size: 0.9rem; margin-bottom: 0; }

/* ===== FAQ ===== */
.faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
    background: var(--bg-card); border-radius: var(--radius-sm); overflow: hidden;
    border: 1px solid var(--border-color); transition: var(--transition);
}
.faq-item:hover { border-color: var(--border-light); }
.faq-question {
    padding: 20px 28px; display: flex; justify-content: space-between; align-items: center;
    font-weight: 600; font-size: 1rem; color: var(--text-primary); cursor: pointer;
    background: none; border: none; width: 100%; text-align: left;
}
.faq-question i { color: var(--accent); transition: var(--transition); font-size: 0.85rem; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer {
    padding: 0 28px 20px; font-size: 0.95rem; color: var(--text-secondary); line-height: 1.7;
    display: none;
}
.faq-item.active .faq-answer { display: block; }

/* ===== CTA ===== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--primary-light));
    position: relative; overflow: hidden;
}
.cta-section::before {
    content: ''; position: absolute; inset: 0; z-index: 0;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover; background-position: center; background-repeat: no-repeat;
    opacity: 0.10; mix-blend-mode: overlay;
}
.cta-content { position: relative; z-index: 1; text-align: center; max-width: 640px; margin: 0 auto; }
.cta-content h2 { color: #fff; margin-bottom: 16px; }
.cta-content p { color: rgba(240, 244, 248, 0.7); margin-bottom: 32px; font-size: 1.1rem; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== 页脚 ===== */
.site-footer {
    background: var(--bg-dark); color: rgba(240, 244, 248, 0.7); padding: 48px 0 28px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.footer-brand .nav-logo { color: #fff; font-size: 1.1rem; margin-bottom: 12px; }
.footer-brand p { font-size: 0.9rem; color: rgba(240, 244, 248, 0.5); max-width: 280px; line-height: 1.7; }
.footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 16px; font-weight: 600; }
.footer-col a {
    display: block; color: rgba(240, 244, 248, 0.55); font-size: 0.88rem; padding: 4px 0;
    transition: var(--transition);
}
.footer-col a:hover { color: var(--accent-light); padding-left: 4px; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06); padding-top: 24px;
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
    font-size: 0.82rem; color: rgba(240, 244, 248, 0.4);
}
.footer-bottom a { color: rgba(240, 244, 248, 0.4); }
.footer-bottom a:hover { color: var(--accent-light); }
.footer-socials { display: flex; gap: 16px; }
.footer-socials a { color: rgba(240, 244, 248, 0.4); font-size: 1.1rem; transition: var(--transition); }
.footer-socials a:hover { color: var(--accent-light); transform: translateY(-2px); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .category-grid { grid-template-columns: repeat(2, 1fr); }
    .posts-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .intro-grid { grid-template-columns: 1fr; gap: 36px; }
    .hero h1 { font-size: 2.8rem; }
}

@media (max-width: 768px) {
    :root { --header-height: 64px; }
    .section { padding: 56px 0; }
    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.7rem; }
    
    .nav-links { display: none; }
    .nav-search { display: none; }
    .nav-cta { display: none; }
    .mobile-toggle { display: block; }
    .nav-dock { padding: 6px 16px 6px 20px; max-width: 96%; }
    
    .nav-links.open {
        display: flex; flex-direction: column; position: absolute; top: calc(100% + 8px);
        left: 0; right: 0; background: rgba(255,255,255,0.96); backdrop-filter: blur(18px);
        border-radius: 24px; padding: 16px; box-shadow: var(--shadow-lg);
        border: 1px solid rgba(255,255,255,0.5); gap: 4px;
    }
    .nav-links.open a { padding: 12px 20px; border-radius: 12px; }
    .nav-links.open .nav-search-mobile { display: flex; margin: 8px 0; }
    .nav-search-mobile {
        display: flex; align-items: center; gap: 8px;
        background: rgba(11, 42, 74, 0.05); border-radius: 40px; padding: 10px 16px;
        border: 1px solid var(--border-color);
    }
    .nav-search-mobile input { background: transparent; border: none; font-size: 0.9rem; color: var(--text-primary); width: 100%; }
    .nav-search-mobile i { color: var(--text-weak); }
    
    .hero { min-height: 90vh; padding: 100px 0 60px; }
    .hero h1 { font-size: 2.2rem; }
    .hero p { font-size: 1rem; }
    .hero-stats { gap: 24px; }
    .hero-stat-number { font-size: 1.6rem; }
    
    .features-grid { grid-template-columns: 1fr; }
    .category-grid { grid-template-columns: 1fr; }
    .posts-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .steps-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    
    .intro-tags { justify-content: center; }
    .hero-actions .btn-primary, .hero-actions .btn-outline { width: 100%; justify-content: center; }
    .cta-actions .btn-primary, .cta-actions .btn-outline { width: 100%; justify-content: center; }
}

@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .hero h1 { font-size: 1.8rem; }
    .hero-stats { flex-direction: column; gap: 16px; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
    .stat-card { padding: 24px 16px; }
    .stat-card .stat-number { font-size: 1.8rem; }
    .steps-grid { grid-template-columns: 1fr; }
    .feature-card { padding: 28px 20px; }
    .faq-question { padding: 16px 20px; font-size: 0.95rem; }
    .faq-answer { padding: 0 20px 16px; }
}

/* ===== 动画 ===== */
@keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
.animate-fade-up { animation: fadeUp 0.6s ease-out forwards; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c5303c;
            --primary-light: #ff6b77;
            --secondary: #1d3557;
            --secondary-light: #2a4a7f;
            --accent: #f4a261;
            --accent-light: #ffd166;
            --bg: #f9fafb;
            --bg-alt: #ffffff;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-light: #64748b;
            --text-white: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 16px 48px rgba(230, 57, 70, 0.15);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--nav-height);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--secondary);
        }
        h1 {
            font-size: 2.8rem;
        }
        h2 {
            font-size: 2.2rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.15rem;
        }
        p {
            margin-bottom: 1rem;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Dock Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: transparent;
            display: flex;
            justify-content: center;
            align-items: center;
            pointer-events: none;
            padding: 0 24px;
        }
        .nav-dock {
            pointer-events: all;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(18px) saturate(1.4);
            -webkit-backdrop-filter: blur(18px) saturate(1.4);
            border-radius: 60px;
            padding: 0 28px;
            height: 56px;
            max-width: 1100px;
            width: 100%;
            box-shadow: 0 4px 32px rgba(0, 0, 0, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.5);
            transition: box-shadow var(--transition);
        }
        .nav-dock:hover {
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.10);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--secondary);
            font-weight: 800;
            font-size: 1.2rem;
            letter-spacing: -0.3px;
            flex-shrink: 0;
        }
        .nav-logo i {
            color: var(--primary);
            font-size: 1.5rem;
        }
        .nav-logo span {
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
            padding: 0 12px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-light);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--secondary);
            background: rgba(29, 53, 87, 0.06);
        }
        .nav-links a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.30);
        }
        .nav-links a.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border-radius: 30px;
            padding: 0 14px;
            height: 38px;
            border: 1px solid var(--border);
            transition: border var(--transition), box-shadow var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.12);
        }
        .nav-search i {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-right: 8px;
        }
        .nav-search input {
            background: transparent;
            border: none;
            width: 120px;
            font-size: 0.9rem;
            color: var(--text);
        }
        .nav-search input::placeholder {
            color: var(--text-light);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff !important;
            padding: 9px 22px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.25);
            white-space: nowrap;
        }
        .nav-cta i {
            font-size: 0.8rem;
            transition: transform var(--transition);
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.35);
            color: #fff !important;
        }
        .nav-cta:hover i {
            transform: translateX(4px);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--secondary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .mobile-toggle:hover {
            background: rgba(0, 0, 0, 0.04);
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1e293b 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center/cover no-repeat;
            opacity: 0.20;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(230, 57, 70, 0.15), transparent 70%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            color: #fff;
            font-size: 2.8rem;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .page-banner h1 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .page-banner .banner-sub {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.15rem;
            max-width: 640px;
            margin: 0 auto 24px;
        }
        .page-banner .banner-meta {
            display: flex;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
        }
        .page-banner .banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .page-banner .banner-meta i {
            color: var(--accent);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-bar {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .breadcrumb-bar a {
            color: var(--text-light);
        }
        .breadcrumb-bar a:hover {
            color: var(--primary);
        }
        .breadcrumb-bar .sep {
            margin: 0 8px;
            color: var(--border);
        }
        .breadcrumb-bar .current {
            color: var(--text);
            font-weight: 500;
        }

        /* ===== Main Content ===== */
        .main-content {
            padding: 60px 0 80px;
        }

        /* ===== Section ===== */
        .section {
            margin-bottom: 64px;
        }
        .section:last-child {
            margin-bottom: 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-header h2 {
            margin-bottom: 10px;
            position: relative;
            display: inline-block;
        }
        .section-header h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-header p {
            color: var(--text-light);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }

        /* ===== Guide Cards ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }
        .guide-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px 28px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .guide-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary);
            opacity: 0;
            transition: opacity var(--transition);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(230, 57, 70, 0.15);
        }
        .guide-card:hover::before {
            opacity: 1;
        }
        .guide-card .card-icon {
            width: 52px;
            height: 52px;
            background: rgba(230, 57, 70, 0.08);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 18px;
            transition: all var(--transition);
        }
        .guide-card:hover .card-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .guide-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            color: var(--secondary);
        }
        .guide-card p {
            color: var(--text-light);
            font-size: 0.95rem;
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .guide-card .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(244, 162, 97, 0.12);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
        }
        .guide-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
            margin-top: 4px;
            transition: gap var(--transition);
        }
        .guide-card .card-link:hover {
            gap: 12px;
        }

        /* ===== Steps / Timeline ===== */
        .steps-section {
            background: #fff;
            border-radius: var(--radius);
            padding: 48px 40px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 24px;
            margin-top: 32px;
        }
        .step-item {
            text-align: center;
            padding: 24px 16px;
            border-radius: var(--radius-sm);
            background: var(--bg);
            transition: all var(--transition);
            position: relative;
        }
        .step-item:hover {
            background: rgba(230, 57, 70, 0.04);
            transform: translateY(-4px);
        }
        .step-item .step-num {
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            margin: 0 auto 14px;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.25);
        }
        .step-item h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
            color: var(--secondary);
        }
        .step-item p {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(230, 57, 70, 0.10);
        }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--secondary);
            gap: 16px;
            user-select: none;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: rgba(0, 0, 0, 0.01);
        }
        .faq-question i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #0f172a 100%);
            border-radius: var(--radius);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--primary);
            color: #fff;
            padding: 16px 40px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: all var(--transition);
            box-shadow: 0 8px 32px rgba(230, 57, 70, 0.30);
        }
        .cta-section .cta-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(230, 57, 70, 0.40);
            color: #fff;
        }
        .cta-section .cta-btn i {
            transition: transform var(--transition);
        }
        .cta-section .cta-btn:hover i {
            transform: translateX(6px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
            margin-top: 20px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .site-footer .footer-brand .nav-logo {
            margin-bottom: 14px;
            color: #fff;
        }
        .site-footer .footer-brand .nav-logo span {
            background: linear-gradient(135deg, #fff, #f1f5f9);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 360px;
            color: rgba(255, 255, 255, 0.55);
        }
        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .site-footer .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: color var(--transition), padding-left var(--transition);
        }
        .site-footer .footer-col a:hover {
            color: var(--accent);
            padding-left: 6px;
        }
        .site-footer .footer-col a i {
            width: 20px;
            margin-right: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-socials {
            display: flex;
            gap: 12px;
        }
        .footer-socials a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.5);
            transition: all var(--transition);
            font-size: 1rem;
        }
        .footer-socials a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }
            .nav-dock {
                padding: 0 16px;
                height: 50px;
                border-radius: 40px;
            }
            .nav-logo span {
                font-size: 1rem;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 12px);
                left: 12px;
                right: 12px;
                background: rgba(255, 255, 255, 0.96);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                border-radius: 20px;
                flex-direction: column;
                padding: 16px 12px;
                box-shadow: 0 12px 48px rgba(0, 0, 0, 0.15);
                border: 1px solid var(--border);
                gap: 4px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                text-align: center;
                padding: 12px 16px;
            }
            .nav-search {
                display: none;
            }
            .nav-cta {
                padding: 7px 16px;
                font-size: 0.8rem;
            }
            .nav-cta span {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-search-mobile {
                display: flex !important;
                align-items: center;
                background: var(--bg);
                border-radius: 30px;
                padding: 0 14px;
                height: 40px;
                border: 1px solid var(--border);
                margin-top: 8px;
                width: 100%;
            }
            .nav-search-mobile i {
                color: var(--text-light);
                margin-right: 8px;
            }
            .nav-search-mobile input {
                background: transparent;
                border: none;
                width: 100%;
                font-size: 0.9rem;
                color: var(--text);
            }
            .nav-search-mobile input::placeholder {
                color: var(--text-light);
            }

            .page-banner {
                padding: 80px 0 56px;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner .banner-sub {
                font-size: 1rem;
            }

            .main-content {
                padding: 40px 0 60px;
            }
            .section {
                margin-bottom: 48px;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .steps-section {
                padding: 32px 20px;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .cta-section {
                padding: 40px 24px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section .cta-btn {
                padding: 14px 28px;
                font-size: 0.95rem;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 18px;
                font-size: 0.9rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 18px 16px;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .page-banner .banner-sub {
                font-size: 0.9rem;
            }
            .page-banner .banner-meta {
                font-size: 0.8rem;
                gap: 12px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .guide-card {
                padding: 24px 20px 20px;
            }
            .cta-section {
                padding: 32px 16px;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .gap-12 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

        /* ===== Focus Visible ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Smooth reveal on scroll (lightweight) ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .guide-card,
        .step-item,
        .faq-item {
            animation: fadeUp 0.5s ease forwards;
        }
        .guide-card:nth-child(2) {
            animation-delay: 0.08s;
        }
        .guide-card:nth-child(3) {
            animation-delay: 0.16s;
        }
        .guide-card:nth-child(4) {
            animation-delay: 0.24s;
        }
        .step-item:nth-child(2) {
            animation-delay: 0.08s;
        }
        .step-item:nth-child(3) {
            animation-delay: 0.16s;
        }
        .step-item:nth-child(4) {
            animation-delay: 0.24s;
        }

        /* ===== Badge ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(230, 57, 70, 0.10);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.3px;
            text-transform: uppercase;
        }
        .badge-accent {
            background: rgba(244, 162, 97, 0.12);
            color: var(--accent);
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f0e17;
            --primary-light: #1a1a2e;
            --secondary: #ff8906;
            --secondary-hover: #e67a00;
            --accent: #e94560;
            --bg: #f8f9fa;
            --bg-alt: #ffffff;
            --bg-dark: #0f0e17;
            --text: #1a1a2e;
            --text-light: #4a4a6a;
            --text-muted: #6c757d;
            --text-white: #ffffff;
            --border: #e8e8ef;
            --border-light: #f0f0f5;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(15,14,23,0.06);
            --shadow-md: 0 8px 30px rgba(15,14,23,0.10);
            --shadow-lg: 0 20px 60px rgba(15,14,23,0.14);
            --shadow-xl: 0 32px 80px rgba(15,14,23,0.18);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --content-width: 760px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
            padding-top: var(--nav-height);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button { cursor: pointer; border: none; background: none; font-family: inherit; }
        input, textarea { font-family: inherit; outline: none; }
        ul { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; color: var(--text); font-weight: 700; }

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

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--secondary);
            color: var(--text-white);
            border-color: var(--secondary);
        }
        .btn-primary:hover { background: var(--secondary-hover); border-color: var(--secondary-hover); transform: translateY(-2px); box-shadow: 0 8px 25px rgba(255,137,6,0.35); }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--border);
        }
        .btn-outline:hover { border-color: var(--secondary); color: var(--secondary); transform: translateY(-2px); }
        .btn-ghost {
            background: rgba(255,137,6,0.08);
            color: var(--secondary);
            border-color: transparent;
        }
        .btn-ghost:hover { background: rgba(255,137,6,0.16); transform: translateY(-2px); }
        .btn-sm { padding: 8px 18px; font-size: 13px; border-radius: 6px; }
        .btn-lg { padding: 16px 36px; font-size: 17px; border-radius: var(--radius-md); }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: rgba(255,137,6,0.12);
            color: var(--secondary);
        }
        .badge-sm { padding: 2px 10px; font-size: 11px; }
        .badge-dark { background: var(--primary); color: var(--text-white); }
        .badge-outline { background: transparent; border: 1px solid var(--border); color: var(--text-muted); }

        /* ===== Card ===== */
        .card {
            background: var(--bg-alt);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
        .card-body { padding: 20px 24px 24px; }
        .card-body-compact { padding: 16px 20px; }
        .card-title { font-size: 18px; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
        .card-text { font-size: 14px; color: var(--text-light); line-height: 1.6; }
        .card-meta { display: flex; align-items: center; gap: 16px; font-size: 13px; color: var(--text-muted); margin-top: 12px; }

        /* ===== Section Spacing ===== */
        .section { padding: 80px 0; }
        .section-sm { padding: 48px 0; }
        .section-lg { padding: 100px 0; }
        .section-title { font-size: 32px; font-weight: 800; margin-bottom: 12px; letter-spacing: -0.02em; }
        .section-subtitle { font-size: 17px; color: var(--text-light); max-width: 560px; line-height: 1.6; }
        .section-head { text-align: center; margin-bottom: 48px; }
        .section-head .section-subtitle { margin: 0 auto; }

        /* ===== Grid ===== */
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            transition: var(--transition);
        }
        .site-header.scrolled { background: rgba(255,255,255,0.95); box-shadow: var(--shadow-sm); }
        .nav-dock {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.03em;
            flex-shrink: 0;
        }
        .nav-logo i { font-size: 24px; color: var(--secondary); }
        .nav-logo span { background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover { color: var(--primary); background: rgba(15,14,23,0.04); }
        .nav-links a.active { color: var(--secondary); background: rgba(255,137,6,0.08); font-weight: 600; }
        .nav-links a.active::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; background: var(--secondary); border-radius: 100px; }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border-radius: 100px;
            padding: 0 16px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .nav-search:focus-within { border-color: var(--secondary); box-shadow: 0 0 0 3px rgba(255,137,6,0.12); }
        .nav-search i { color: var(--text-muted); font-size: 14px; }
        .nav-search input {
            border: none;
            background: transparent;
            padding: 8px 10px;
            font-size: 13px;
            width: 140px;
            color: var(--text);
        }
        .nav-search input::placeholder { color: var(--text-muted); }
        .nav-cta {
            padding: 8px 22px;
            border-radius: 100px;
            background: var(--secondary);
            color: var(--text-white);
            font-size: 13px;
            font-weight: 600;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-cta:hover { background: var(--secondary-hover); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(255,137,6,0.3); color: var(--text-white); }
        .mobile-toggle { display: none; font-size: 22px; color: var(--primary); padding: 6px; border-radius: 8px; }
        .mobile-toggle:hover { background: var(--bg); }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 60px 0 40px;
            background: var(--bg-alt);
            border-bottom: 1px solid var(--border-light);
        }
        .article-hero .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }
        .article-hero .article-meta .badge { font-size: 13px; padding: 6px 18px; }
        .article-hero .article-meta .date { font-size: 14px; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }
        .article-hero h1 {
            font-size: 40px;
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.2;
            margin-bottom: 16px;
            color: var(--primary);
        }
        .article-hero .article-excerpt {
            font-size: 18px;
            color: var(--text-light);
            line-height: 1.7;
            max-width: 700px;
        }
        .article-hero .article-cover {
            margin-top: 32px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            aspect-ratio: 16/9;
            object-fit: cover;
            width: 100%;
        }

        /* ===== Article Content ===== */
        .article-content-wrap {
            padding: 56px 0 48px;
            background: var(--bg-alt);
        }
        .article-content {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text);
        }
        .article-content h2 { font-size: 26px; margin-top: 40px; margin-bottom: 16px; font-weight: 700; }
        .article-content h3 { font-size: 20px; margin-top: 32px; margin-bottom: 12px; font-weight: 600; }
        .article-content p { margin-bottom: 20px; }
        .article-content ul, .article-content ol { margin-bottom: 20px; padding-left: 24px; }
        .article-content li { margin-bottom: 8px; }
        .article-content img { border-radius: var(--radius-md); margin: 24px 0; box-shadow: var(--shadow-sm); }
        .article-content blockquote {
            border-left: 4px solid var(--secondary);
            padding: 16px 24px;
            margin: 24px 0;
            background: rgba(255,137,6,0.05);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-light);
        }
        .article-content a { color: var(--secondary); text-decoration: underline; text-underline-offset: 2px; }
        .article-content a:hover { color: var(--secondary-hover); }
        .article-content code {
            background: var(--bg);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 14px;
            border: 1px solid var(--border-light);
        }

        /* ===== Article Tags & Share ===== */
        .article-tags-share {
            padding: 32px 0;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            margin-top: 40px;
        }
        .article-tags-share .inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-tags { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
        .article-tags .tag {
            padding: 6px 16px;
            border-radius: 100px;
            background: var(--bg);
            font-size: 13px;
            color: var(--text-light);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .article-tags .tag:hover { border-color: var(--secondary); color: var(--secondary); background: rgba(255,137,6,0.05); }
        .article-share { display: flex; align-items: center; gap: 8px; }
        .article-share span { font-size: 14px; color: var(--text-muted); }
        .article-share a {
            display: flex; align-items: center; justify-content: center;
            width: 36px; height: 36px;
            border-radius: 50%;
            background: var(--bg);
            color: var(--text-light);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            font-size: 15px;
        }
        .article-share a:hover { background: var(--secondary); color: var(--text-white); border-color: var(--secondary); transform: translateY(-2px); }

        /* ===== Article Pagination ===== */
        .article-pagination {
            padding: 40px 0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .article-pagination a {
            padding: 20px 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            background: var(--bg-alt);
        }
        .article-pagination a:hover { border-color: var(--secondary); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
        .article-pagination .pagination-label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; font-weight: 600; }
        .article-pagination .pagination-title { font-size: 16px; font-weight: 600; margin-top: 4px; color: var(--text); }
        .article-pagination .next { text-align: right; }

        /* ===== Related Articles ===== */
        .related-section {
            padding: 64px 0;
            background: var(--bg);
        }
        .related-section .section-head { margin-bottom: 40px; }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--bg-alt);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .related-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .related-card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
        .related-card .card-body { padding: 18px 20px 20px; }
        .related-card .card-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; line-height: 1.4; }
        .related-card .card-body p { font-size: 14px; color: var(--text-light); line-height: 1.6; }
        .related-card .card-body .meta { font-size: 12px; color: var(--text-muted); margin-top: 10px; display: flex; align-items: center; gap: 12px; }

        /* ===== Article CTA ===== */
        .article-cta-section {
            padding: 64px 0;
            background: var(--bg-dark);
            color: var(--text-white);
            text-align: center;
        }
        .article-cta-section h2 { font-size: 32px; font-weight: 800; color: var(--text-white); margin-bottom: 12px; }
        .article-cta-section p { font-size: 17px; color: rgba(255,255,255,0.7); max-width: 500px; margin: 0 auto 28px; }
        .article-cta-section .btn-primary { font-size: 16px; padding: 14px 36px; }
        .article-cta-section .btn-primary:hover { box-shadow: 0 8px 30px rgba(255,137,6,0.4); }

        /* ===== Not Found ===== */
        .not-found-section {
            min-height: 50vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 80px 24px;
        }
        .not-found-section .icon { font-size: 64px; color: var(--text-muted); margin-bottom: 20px; }
        .not-found-section h2 { font-size: 28px; margin-bottom: 12px; }
        .not-found-section p { color: var(--text-light); margin-bottom: 24px; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 0;
        }
        .site-footer .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .nav-logo { margin-bottom: 16px; }
        .footer-brand .nav-logo span { background: linear-gradient(135deg, #fff 0%, var(--secondary) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 360px; }
        .footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 18px; }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-col a i { width: 20px; }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom span { font-size: 13px; color: rgba(255,255,255,0.4); }
        .footer-socials { display: flex; align-items: center; gap: 10px; }
        .footer-socials a {
            display: flex; align-items: center; justify-content: center;
            width: 36px; height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.6);
            font-size: 16px;
            transition: var(--transition);
        }
        .footer-socials a:hover { background: var(--secondary); color: #fff; transform: translateY(-2px); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .article-hero h1 { font-size: 34px; }
        }
        @media (max-width: 768px) {
            :root { --nav-height: 64px; }
            body { padding-top: var(--nav-height); }
            .nav-links { display: none; }
            .nav-links.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--bg-alt);
                border-bottom: 1px solid var(--border-light);
                padding: 16px 24px;
                box-shadow: var(--shadow-md);
                gap: 4px;
            }
            .nav-links.open a { padding: 12px 16px; width: 100%; border-radius: var(--radius-sm); }
            .nav-links.open a.active::after { display: none; }
            .nav-links.open a.active { background: rgba(255,137,6,0.08); }
            .nav-search { display: none; }
            .nav-cta { padding: 8px 16px; font-size: 12px; }
            .mobile-toggle { display: block; }
            .section { padding: 48px 0; }
            .section-lg { padding: 56px 0; }
            .section-title { font-size: 26px; }
            .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 20px; }
            .article-hero { padding: 32px 0 24px; }
            .article-hero h1 { font-size: 26px; }
            .article-hero .article-excerpt { font-size: 16px; }
            .article-content { font-size: 16px; }
            .article-content h2 { font-size: 22px; }
            .article-pagination { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .article-tags-share .inner { flex-direction: column; align-items: flex-start; }
            .nav-search-mobile {
                display: flex !important;
                align-items: center;
                background: var(--bg);
                border-radius: 100px;
                padding: 0 14px;
                border: 1px solid var(--border-light);
                margin-top: 8px;
                width: 100%;
            }
            .nav-search-mobile i { color: var(--text-muted); font-size: 14px; }
            .nav-search-mobile input {
                border: none;
                background: transparent;
                padding: 10px 10px;
                font-size: 14px;
                width: 100%;
                color: var(--text);
            }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .nav-dock { padding: 0 16px; }
            .article-hero h1 { font-size: 22px; }
            .section-title { font-size: 22px; }
            .btn-lg { padding: 14px 28px; font-size: 15px; }
            .article-cta-section h2 { font-size: 24px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-8 { margin-top: 8px; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mt-32 { margin-top: 32px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .gap-8 { gap: 8px; }
        .gap-12 { gap: 12px; }
        .flex { display: flex; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-between { display: flex; align-items: center; justify-content: space-between; }
        .flex-wrap { flex-wrap: wrap; }