/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #0a1628;
  --primary-light: #1a2d4a;
  --primary-dark: #050e1a;
  --accent: #f0b90b;
  --accent-light: #fcd535;
  --accent-dark: #d4a108;
  --bg-body: #050e1a;
  --bg-section: #091525;
  --bg-card: #0d1f36;
  --bg-card-hover: #122a48;
  --text-primary: #ffffff;
  --text-secondary: #b0b8c4;
  --text-muted: #6b7a8f;
  --border-color: #1e3450;
  --border-light: #2a4060;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-sm: 0 2px 12px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 28px rgba(0,0,0,0.45);
  --shadow-lg: 0 20px 56px rgba(0,0,0,0.55);
  --shadow-accent: 0 4px 20px rgba(240,185,11,0.25);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --container-width: 1200px;
  --header-height: 76px;
}
/* ===== 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;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
ul, ol { list-style: none; }
/* ===== Container ===== */
.container { width: 100%; max-width: var(--container-width); margin: 0 auto; padding: 0 24px; }
/* ===== 导航 Header ===== */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(5,14,26,0.92); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  height: var(--header-height);
  transition: var(--transition);
}
.header.scrolled { background: rgba(5,14,26,0.98); box-shadow: 0 4px 24px rgba(0,0,0,0.4); }
.header-inner {
  display: flex; align-items: center; justify-content: center;
  height: 100%; position: relative;
}
.header-logo {
  position: absolute; left: 50%; transform: translateX(-50%);
  font-size: 22px; font-weight: 800; letter-spacing: 0.5px;
  color: var(--text-primary); white-space: nowrap;
}
.header-logo span { color: var(--accent); }
.header-logo i { margin-right: 8px; color: var(--accent); font-size: 20px; }
.nav-left, .nav-right { display: flex; align-items: center; gap: 6px; }
.nav-left { position: absolute; left: 24px; }
.nav-right { position: absolute; right: 24px; }
.nav-link {
  padding: 8px 18px; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 500; color: var(--text-secondary);
  transition: var(--transition); position: relative;
}
.nav-link:hover { color: var(--text-primary); background: rgba(255,255,255,0.05); }
.nav-link.active { color: var(--accent); background: rgba(240,185,11,0.08); }
.nav-link.active::after {
  content: ''; position: absolute; bottom: -2px; left: 50%; transform: translateX(-50%);
  width: 20px; height: 2px; background: var(--accent); border-radius: 2px;
}
.nav-cta {
  padding: 8px 22px; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--primary-dark) !important; font-weight: 700; font-size: 14px;
  box-shadow: var(--shadow-accent); margin-left: 8px;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 6px 24px rgba(240,185,11,0.35); }
.menu-toggle { display: none; background: none; color: var(--text-primary); font-size: 24px; cursor: pointer; padding: 8px; }
/* ===== 移动端菜单 ===== */
.mobile-menu {
  display: none; position: fixed; top: var(--header-height); left: 0; right: 0;
  background: rgba(5,14,26,0.98); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 24px 24px; z-index: 999;
  flex-direction: column; gap: 6px;
}
.mobile-menu.open { display: flex; }
.mobile-menu .nav-link { padding: 12px 16px; font-size: 16px; border-radius: var(--radius-sm); }
.mobile-menu .nav-cta { margin-left: 0; margin-top: 8px; text-align: center; }
/* ===== Hero 首屏 ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, #0f1f3a 100%);
  position: relative; overflow: hidden; padding: 120px 0 80px;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity: 0.15; mix-blend-mode: overlay;
}
.hero::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(240,185,11,0.08) 0%, transparent 70%);
}
.hero-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
  align-items: center; position: relative; z-index: 1;
}
.hero-content { max-width: 600px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 18px; border-radius: 50px;
  background: rgba(240,185,11,0.12); border: 1px solid rgba(240,185,11,0.2);
  color: var(--accent); font-size: 13px; font-weight: 600; margin-bottom: 24px;
  letter-spacing: 1px; text-transform: uppercase;
}
.hero-badge i { font-size: 14px; }
.hero-title {
  font-size: 52px; font-weight: 800; line-height: 1.15;
  margin-bottom: 20px; letter-spacing: -1px;
}
.hero-title span { color: var(--accent); }
.hero-desc {
  font-size: 18px; color: var(--text-secondary); line-height: 1.7;
  margin-bottom: 36px; max-width: 520px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px; border-radius: var(--radius-sm);
  font-size: 16px; font-weight: 600; cursor: pointer;
  transition: var(--transition); border: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--primary-dark); box-shadow: var(--shadow-accent);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(240,185,11,0.35); }
.btn-outline {
  background: transparent; color: var(--text-primary);
  border: 1.5px solid var(--border-light);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(240,185,11,0.06); }
.btn-lg { padding: 16px 40px; font-size: 18px; }
.hero-visual {
  display: flex; justify-content: center; align-items: center;
  position: relative;
}
.hero-img-wrap {
  position: relative; width: 100%; max-width: 480px;
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.hero-img-wrap img { width: 100%; border-radius: var(--radius-lg); }
.hero-img-wrap::after {
  content: ''; position: absolute; inset: 0;
  border: 1px solid rgba(240,185,11,0.15);
  border-radius: var(--radius-lg); pointer-events: none;
}
.hero-float-card {
  position: absolute; bottom: -20px; right: -20px;
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-md); padding: 16px 20px;
  display: flex; align-items: center; gap: 12px;
  box-shadow: var(--shadow-md); backdrop-filter: blur(8px);
}
.hero-float-card i { font-size: 28px; color: var(--accent); }
.hero-float-card .num { font-size: 22px; font-weight: 800; color: var(--accent); }
.hero-float-card .label { font-size: 13px; color: var(--text-secondary); }
/* ===== 板块通用 ===== */
.section { padding: 80px 0; }
.section-dark { background: var(--bg-section); }
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag {
  display: inline-block; padding: 4px 16px; border-radius: 50px;
  background: rgba(240,185,11,0.1); border: 1px solid rgba(240,185,11,0.15);
  color: var(--accent); font-size: 13px; font-weight: 600;
  letter-spacing: 0.5px; margin-bottom: 16px;
}
.section-title {
  font-size: 36px; font-weight: 800; letter-spacing: -0.5px;
  margin-bottom: 12px;
}
.section-title span { color: var(--accent); }
.section-desc {
  font-size: 17px; color: var(--text-secondary); max-width: 600px; margin: 0 auto;
}
/* ===== 核心说明板块 ===== */
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.feature-card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-md); padding: 36px 28px;
  transition: var(--transition); position: relative; overflow: hidden;
}
.feature-card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow-md); }
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  opacity: 0; transition: var(--transition);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 56px; height: 56px; border-radius: var(--radius-sm);
  background: rgba(240,185,11,0.1); display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; font-size: 26px; color: var(--accent);
}
.feature-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.feature-card p { font-size: 15px; color: var(--text-secondary); line-height: 1.7; }
/* ===== 分类入口 ===== */
.categories-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
.category-card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-md); overflow: hidden;
  display: flex; transition: var(--transition);
}
.category-card:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: var(--shadow-md); }
.category-img { width: 200px; min-height: 180px; object-fit: cover; flex-shrink: 0; }
.category-body { padding: 24px 28px; display: flex; flex-direction: column; justify-content: center; }
.category-body h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.category-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 16px; }
.category-tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 14px; border-radius: 50px;
  background: rgba(240,185,11,0.1); color: var(--accent);
  font-size: 12px; font-weight: 600;
}
/* ===== 资讯/内容列表 ===== */
.posts-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.post-card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-md); overflow: hidden;
  transition: var(--transition);
}
.post-card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow-md); }
.post-card img { width: 100%; height: 200px; object-fit: cover; }
.post-card-body { padding: 20px 22px 24px; }
.post-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; font-size: 13px; color: var(--text-muted); }
.post-meta .cat {
  padding: 2px 10px; border-radius: 50px;
  background: rgba(240,185,11,0.1); color: var(--accent); font-weight: 600;
}
.post-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.post-card h3 a { color: var(--text-primary); }
.post-card h3 a:hover { color: var(--accent); }
.post-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
.post-empty {
  grid-column: 1 / -1; text-align: center; padding: 60px 20px;
  color: var(--text-muted); font-size: 16px;
}
.post-empty i { font-size: 40px; margin-bottom: 16px; display: block; color: var(--border-light); }
/* ===== 数据/流程 ===== */
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-md); padding: 32px 20px;
  text-align: center; transition: var(--transition);
}
.stat-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.stat-number { font-size: 38px; font-weight: 800; color: var(--accent); margin-bottom: 4px; }
.stat-label { font-size: 15px; color: var(--text-secondary); }
/* 流程步骤 */
.steps-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 40px;
}
.step-item { text-align: center; position: relative; }
.step-item:not(:last-child)::after {
  content: '→'; position: absolute; right: -16px; top: 20px;
  font-size: 24px; color: var(--accent); font-weight: 700;
}
.step-num {
  width: 48px; height: 48px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--primary-dark); font-size: 20px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
}
.step-item h4 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.step-item p { font-size: 14px; color: var(--text-secondary); }
/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-sm); overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--border-light); }
.faq-q {
  padding: 18px 24px; display: flex; align-items: center; justify-content: space-between;
  cursor: pointer; font-weight: 600; font-size: 16px;
  transition: var(--transition); user-select: none;
}
.faq-q i { transition: var(--transition); color: var(--accent); }
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-a {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease;
  padding: 0 24px; color: var(--text-secondary); font-size: 15px; line-height: 1.7;
}
.faq-item.open .faq-a { max-height: 300px; padding: 0 24px 20px; }
/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, #0f1f3a 100%);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}
.cta-box {
  text-align: center; padding: 60px 20px;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-radius: var(--radius-lg); position: relative; overflow: hidden;
}
.cta-box::before {
  content: ''; position: absolute; inset: 0;
  background: rgba(5,14,26,0.7); backdrop-filter: blur(4px);
}
.cta-box > * { position: relative; z-index: 1; }
.cta-box h2 { font-size: 34px; font-weight: 800; margin-bottom: 12px; }
.cta-box p { font-size: 17px; color: var(--text-secondary); max-width: 500px; margin: 0 auto 28px; }
/* ===== 页脚 ===== */
.footer {
  background: var(--primary-dark); border-top: 1px solid var(--border-color);
  padding: 48px 0 28px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
  padding-bottom: 32px; border-bottom: 1px solid var(--border-color);
  margin-bottom: 24px;
}
.footer-brand .logo-text { font-size: 20px; font-weight: 800; margin-bottom: 12px; display: block; }
.footer-brand .logo-text span { color: var(--accent); }
.footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.7; max-width: 320px; }
.footer-col h4 { font-size: 15px; font-weight: 700; margin-bottom: 16px; color: var(--text-primary); }
.footer-col a {
  display: block; font-size: 14px; color: var(--text-muted);
  padding: 5px 0; transition: var(--transition);
}
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { text-align: center; font-size: 13px; color: var(--text-muted); }
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent); }
/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero-title { font-size: 40px; }
  .hero-grid { gap: 40px; }
  .features-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); }
  .steps-grid .step-item:nth-child(2)::after { display: none; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .categories-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-left, .nav-right { display: none; }
  .menu-toggle { display: block; position: absolute; right: 24px; z-index: 10; }
  .header-logo { position: relative; left: auto; transform: none; font-size: 18px; }
  .header-inner { justify-content: flex-start; padding-left: 24px; }
  .hero { padding: 100px 0 60px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .hero-content { max-width: 100%; }
  .hero-desc { margin: 0 auto 36px; }
  .hero-actions { justify-content: center; }
  .hero-title { font-size: 32px; }
  .hero-visual { order: -1; }
  .hero-img-wrap { max-width: 320px; margin: 0 auto; }
  .hero-float-card { position: relative; bottom: auto; right: auto; margin-top: 16px; justify-content: center; }
  .section { padding: 56px 0; }
  .section-title { font-size: 28px; }
  .features-grid { grid-template-columns: 1fr; }
  .posts-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: 1fr; }
  .steps-grid .step-item::after { display: none; }
  .category-card { flex-direction: column; }
  .category-img { width: 100%; height: 180px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .cta-box h2 { font-size: 26px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 26px; }
  .hero-desc { font-size: 15px; }
  .btn-lg { padding: 14px 28px; font-size: 16px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .stat-number { font-size: 30px; }
  .section-title { font-size: 24px; }
  .post-card img { height: 160px; }
}

/* roulang page: article */
/* ===== 设计变量 ===== */
    :root {
        --primary: #6c3bf1;
        --primary-dark: #5329c7;
        --primary-light: #8f6cf7;
        --primary-gradient: linear-gradient(135deg, #6c3bf1 0%, #a855f7 100%);
        --secondary: #f59e0b;
        --secondary-light: #fbbf24;
        --accent: #10b981;
        --bg-dark: #0f0b1a;
        --bg-card: #1a1530;
        --bg-card-hover: #221d3a;
        --bg-section: #0f0b1a;
        --bg-section-alt: #15102a;
        --text-white: #ffffff;
        --text-light: #e2dff0;
        --text-muted: #9a94b8;
        --text-dim: #6b6588;
        --border-color: rgba(108, 59, 241, 0.25);
        --border-light: rgba(255, 255, 255, 0.06);
        --radius-sm: 8px;
        --radius-md: 14px;
        --radius-lg: 20px;
        --radius-xl: 28px;
        --shadow-sm: 0 2px 12px rgba(108, 59, 241, 0.12);
        --shadow-md: 0 8px 32px rgba(108, 59, 241, 0.18);
        --shadow-lg: 0 16px 48px rgba(108, 59, 241, 0.25);
        --shadow-glow: 0 0 40px rgba(108, 59, 241, 0.25);
        --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
        --transition: all 0.3s 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;
        -moz-osx-font-smoothing: grayscale;
    }
    body {
        font-family: var(--font-sans);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text-light);
        background: var(--bg-dark);
        min-height: 100vh;
        padding-top: var(--header-height);
    }
    a {
        color: var(--primary-light);
        text-decoration: none;
        transition: var(--transition);
    }
    a:hover {
        color: var(--secondary);
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
        border-radius: var(--radius-sm);
    }
    button,
    input,
    textarea {
        font-family: inherit;
        font-size: inherit;
        border: none;
        outline: none;
        background: none;
        color: inherit;
    }
    ul,
    ol {
        list-style: none;
    }

    /* ===== Container ===== */
    .container {
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 20px;
    }
    @media (max-width: 768px) {
        .container {
            padding: 0 16px;
        }
    }

    /* ===== Header / Nav ===== */
    .header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        height: var(--header-height);
        background: rgba(15, 11, 26, 0.92);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--border-light);
        transition: var(--transition);
    }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
        gap: 20px;
    }
    .nav-left,
    .nav-right {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .nav-link {
        padding: 8px 16px;
        font-size: 14px;
        font-weight: 500;
        color: var(--text-muted);
        border-radius: var(--radius-sm);
        transition: var(--transition);
        white-space: nowrap;
        position: relative;
    }
    .nav-link:hover {
        color: var(--text-white);
        background: rgba(108, 59, 241, 0.12);
    }
    .nav-link.active {
        color: var(--text-white);
        background: var(--primary-gradient);
        box-shadow: 0 4px 16px rgba(108, 59, 241, 0.35);
    }
    .nav-link.nav-cta {
        background: var(--primary-gradient);
        color: #fff;
        padding: 8px 22px;
        border-radius: var(--radius-xl);
        font-weight: 600;
        box-shadow: 0 4px 20px rgba(108, 59, 241, 0.35);
    }
    .nav-link.nav-cta:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 30px rgba(108, 59, 241, 0.5);
        color: #fff;
    }
    .header-logo {
        font-size: 22px;
        font-weight: 800;
        color: var(--text-white);
        letter-spacing: -0.5px;
        display: flex;
        align-items: center;
        gap: 8px;
        flex-shrink: 0;
    }
    .header-logo i {
        color: var(--secondary);
        font-size: 20px;
    }
    .header-logo span {
        color: var(--primary-light);
        font-weight: 700;
    }
    .header-logo:hover {
        color: var(--text-white);
    }
    .menu-toggle {
        display: none;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid var(--border-light);
        color: var(--text-light);
        width: 42px;
        height: 42px;
        border-radius: var(--radius-sm);
        font-size: 20px;
        cursor: pointer;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
    }
    .menu-toggle:hover {
        background: rgba(108, 59, 241, 0.2);
        color: var(--text-white);
    }

    /* ===== 移动端导航 ===== */
    @media (max-width: 820px) {
        .nav-left,
        .nav-right {
            display: none;
            position: absolute;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: rgba(15, 11, 26, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            flex-direction: column;
            padding: 16px 20px;
            gap: 4px;
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-lg);
        }
        .nav-left {
            padding-bottom: 4px;
        }
        .nav-right {
            padding-top: 4px;
        }
        .nav-left.show,
        .nav-right.show {
            display: flex;
        }
        .nav-left {
            top: var(--header-height);
        }
        .nav-right {
            top: calc(var(--header-height) + 180px);
        }
        .nav-link {
            padding: 12px 16px;
            font-size: 15px;
            width: 100%;
            border-radius: var(--radius-sm);
        }
        .nav-link.nav-cta {
            text-align: center;
        }
        .menu-toggle {
            display: flex;
        }
        .header-inner {
            position: relative;
        }
    }
    @media (max-width: 520px) {
        .header-logo {
            font-size: 18px;
        }
        .header-logo i {
            font-size: 16px;
        }
        :root {
            --header-height: 64px;
        }
    }

    /* ===== 文章 Banner ===== */
    .article-banner {
        position: relative;
        padding: 60px 0 40px;
        background: var(--bg-section);
        border-bottom: 1px solid var(--border-light);
        overflow: hidden;
    }
    .article-banner::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
        opacity: 0.08;
        pointer-events: none;
    }
    .article-banner .container {
        position: relative;
        z-index: 2;
    }
    .article-breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--text-dim);
        margin-bottom: 20px;
        flex-wrap: wrap;
    }
    .article-breadcrumb a {
        color: var(--text-muted);
    }
    .article-breadcrumb a:hover {
        color: var(--primary-light);
    }
    .article-breadcrumb .sep {
        color: var(--text-dim);
        font-size: 10px;
    }
    .article-breadcrumb .current {
        color: var(--text-light);
    }
    .article-banner h1 {
        font-size: 36px;
        font-weight: 800;
        color: var(--text-white);
        line-height: 1.3;
        letter-spacing: -0.5px;
        max-width: 860px;
    }
    .article-meta {
        display: flex;
        align-items: center;
        gap: 20px;
        margin-top: 18px;
        flex-wrap: wrap;
        font-size: 14px;
        color: var(--text-muted);
    }
    .article-meta .badge {
        display: inline-block;
        padding: 4px 14px;
        border-radius: var(--radius-xl);
        font-size: 12px;
        font-weight: 600;
        background: var(--primary-gradient);
        color: #fff;
        letter-spacing: 0.3px;
    }
    .article-meta .date {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .article-meta .date i {
        font-size: 13px;
        color: var(--text-dim);
    }

    @media (max-width: 768px) {
        .article-banner {
            padding: 40px 0 28px;
        }
        .article-banner h1 {
            font-size: 26px;
        }
        .article-meta {
            gap: 12px;
            font-size: 13px;
        }
    }
    @media (max-width: 520px) {
        .article-banner h1 {
            font-size: 22px;
        }
        .article-breadcrumb {
            font-size: 12px;
        }
    }

    /* ===== 文章主体 ===== */
    .article-main {
        padding: 50px 0 70px;
        background: var(--bg-dark);
    }
    .article-layout {
        display: grid;
        grid-template-columns: 1fr 320px;
        gap: 48px;
        align-items: start;
    }
    .article-content {
        background: var(--bg-card);
        border-radius: var(--radius-lg);
        border: 1px solid var(--border-light);
        padding: 40px 44px;
        min-height: 300px;
    }
    .article-content .content-body {
        font-size: 16px;
        line-height: 1.9;
        color: var(--text-light);
    }
    .article-content .content-body p {
        margin-bottom: 1.4em;
    }
    .article-content .content-body h2,
    .article-content .content-body h3,
    .article-content .content-body h4 {
        color: var(--text-white);
        font-weight: 700;
        margin-top: 1.8em;
        margin-bottom: 0.8em;
        line-height: 1.4;
    }
    .article-content .content-body h2 {
        font-size: 24px;
    }
    .article-content .content-body h3 {
        font-size: 20px;
    }
    .article-content .content-body ul,
    .article-content .content-body ol {
        margin-bottom: 1.4em;
        padding-left: 1.6em;
    }
    .article-content .content-body ul li {
        list-style: disc;
        margin-bottom: 0.4em;
    }
    .article-content .content-body ol li {
        list-style: decimal;
        margin-bottom: 0.4em;
    }
    .article-content .content-body a {
        color: var(--primary-light);
        text-decoration: underline;
        text-underline-offset: 2px;
    }
    .article-content .content-body a:hover {
        color: var(--secondary);
    }
    .article-content .content-body img {
        border-radius: var(--radius-md);
        margin: 1.5em 0;
        box-shadow: var(--shadow-md);
    }
    .article-content .content-body blockquote {
        border-left: 4px solid var(--primary);
        padding: 12px 20px;
        margin: 1.4em 0;
        background: rgba(108, 59, 241, 0.06);
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        color: var(--text-muted);
        font-style: italic;
    }
    .article-content .content-body code {
        background: rgba(255, 255, 255, 0.06);
        padding: 2px 10px;
        border-radius: 4px;
        font-size: 14px;
        color: var(--secondary-light);
    }
    .article-content .content-body pre {
        background: rgba(0, 0, 0, 0.4);
        padding: 20px 24px;
        border-radius: var(--radius-md);
        overflow-x: auto;
        margin: 1.4em 0;
        border: 1px solid var(--border-light);
    }
    .article-content .content-body pre code {
        background: none;
        padding: 0;
        color: inherit;
    }
    .article-notfound {
        text-align: center;
        padding: 60px 20px;
    }
    .article-notfound i {
        font-size: 56px;
        color: var(--text-dim);
        margin-bottom: 20px;
        display: block;
    }
    .article-notfound h2 {
        font-size: 28px;
        color: var(--text-white);
        margin-bottom: 12px;
    }
    .article-notfound p {
        color: var(--text-muted);
        margin-bottom: 24px;
        font-size: 16px;
    }
    .article-notfound .btn-back {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 32px;
        background: var(--primary-gradient);
        color: #fff;
        border-radius: var(--radius-xl);
        font-weight: 600;
        font-size: 15px;
        box-shadow: 0 4px 20px rgba(108, 59, 241, 0.35);
    }
    .article-notfound .btn-back:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 32px rgba(108, 59, 241, 0.5);
        color: #fff;
    }

    /* ===== 侧边栏 ===== */
    .article-sidebar {
        display: flex;
        flex-direction: column;
        gap: 28px;
    }
    .sidebar-card {
        background: var(--bg-card);
        border-radius: var(--radius-md);
        border: 1px solid var(--border-light);
        padding: 24px 26px;
    }
    .sidebar-card h3 {
        font-size: 16px;
        font-weight: 700;
        color: var(--text-white);
        margin-bottom: 16px;
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .sidebar-card h3 i {
        color: var(--primary-light);
        font-size: 16px;
    }
    .sidebar-list {
        display: flex;
        flex-direction: column;
        gap: 2px;
    }
    .sidebar-list a {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 10px 12px;
        border-radius: var(--radius-sm);
        font-size: 14px;
        color: var(--text-muted);
        transition: var(--transition);
    }
    .sidebar-list a:hover {
        background: rgba(108, 59, 241, 0.1);
        color: var(--text-light);
        transform: translateX(4px);
    }
    .sidebar-list a .tag {
        font-size: 11px;
        padding: 2px 10px;
        border-radius: 20px;
        background: rgba(108, 59, 241, 0.15);
        color: var(--primary-light);
        font-weight: 500;
        margin-left: auto;
        flex-shrink: 0;
    }
    .sidebar-cta {
        background: var(--primary-gradient);
        border: none;
        text-align: center;
        padding: 30px 24px;
    }
    .sidebar-cta h3 {
        color: #fff;
        justify-content: center;
    }
    .sidebar-cta h3 i {
        color: var(--secondary);
    }
    .sidebar-cta p {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.8);
        margin-bottom: 18px;
        line-height: 1.6;
    }
    .sidebar-cta .btn-download {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 32px;
        background: #fff;
        color: var(--primary-dark);
        border-radius: var(--radius-xl);
        font-weight: 700;
        font-size: 15px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        transition: var(--transition);
    }
    .sidebar-cta .btn-download:hover {
        transform: translateY(-2px) scale(1.02);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
        color: var(--primary-dark);
    }

    @media (max-width: 1024px) {
        .article-layout {
            grid-template-columns: 1fr 260px;
            gap: 32px;
        }
        .article-content {
            padding: 32px 28px;
        }
    }
    @media (max-width: 820px) {
        .article-layout {
            grid-template-columns: 1fr;
            gap: 32px;
        }
        .article-content {
            padding: 28px 20px;
        }
        .article-content .content-body {
            font-size: 15px;
        }
    }
    @media (max-width: 520px) {
        .article-main {
            padding: 30px 0 50px;
        }
        .article-content {
            padding: 20px 16px;
            border-radius: var(--radius-md);
        }
        .article-content .content-body h2 {
            font-size: 20px;
        }
        .article-content .content-body h3 {
            font-size: 18px;
        }
        .sidebar-card {
            padding: 18px 16px;
        }
    }

    /* ===== 相关推荐 ===== */
    .related-section {
        padding: 50px 0 70px;
        background: var(--bg-section-alt);
        border-top: 1px solid var(--border-light);
    }
    .related-section .section-title {
        font-size: 26px;
        font-weight: 800;
        color: var(--text-white);
        text-align: center;
        margin-bottom: 36px;
        letter-spacing: -0.3px;
    }
    .related-section .section-title span {
        color: var(--primary-light);
    }
    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .related-card {
        background: var(--bg-card);
        border-radius: var(--radius-md);
        border: 1px solid var(--border-light);
        overflow: hidden;
        transition: var(--transition);
    }
    .related-card:hover {
        transform: translateY(-4px);
        border-color: rgba(108, 59, 241, 0.3);
        box-shadow: var(--shadow-md);
    }
    .related-card .card-img {
        width: 100%;
        height: 180px;
        object-fit: cover;
        border-radius: 0;
    }
    .related-card .card-body {
        padding: 20px 22px 24px;
    }
    .related-card .card-body h4 {
        font-size: 16px;
        font-weight: 700;
        color: var(--text-white);
        margin-bottom: 8px;
        line-height: 1.4;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .related-card .card-body p {
        font-size: 13px;
        color: var(--text-muted);
        line-height: 1.6;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .related-card .card-body .meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-top: 14px;
        font-size: 12px;
        color: var(--text-dim);
    }
    .related-card .card-body .meta .badge-sm {
        padding: 2px 12px;
        border-radius: 20px;
        background: rgba(108, 59, 241, 0.15);
        color: var(--primary-light);
        font-size: 11px;
        font-weight: 500;
    }

    @media (max-width: 820px) {
        .related-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }
    @media (max-width: 520px) {
        .related-grid {
            grid-template-columns: 1fr;
        }
        .related-section .section-title {
            font-size: 22px;
        }
        .related-card .card-img {
            height: 160px;
        }
    }

    /* ===== Footer ===== */
    .footer {
        background: var(--bg-card);
        border-top: 1px solid var(--border-light);
        padding: 56px 0 30px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.5fr 1fr 1fr 1fr;
        gap: 36px;
        margin-bottom: 40px;
    }
    .footer-brand .logo-text {
        font-size: 20px;
        font-weight: 800;
        color: var(--text-white);
        letter-spacing: -0.3px;
    }
    .footer-brand .logo-text span {
        color: var(--primary-light);
    }
    .footer-brand p {
        font-size: 14px;
        color: var(--text-muted);
        margin-top: 12px;
        line-height: 1.7;
        max-width: 320px;
    }
    .footer-col h4 {
        font-size: 15px;
        font-weight: 700;
        color: var(--text-white);
        margin-bottom: 16px;
    }
    .footer-col a {
        display: block;
        padding: 6px 0;
        font-size: 14px;
        color: var(--text-muted);
        transition: var(--transition);
    }
    .footer-col a:hover {
        color: var(--primary-light);
        padding-left: 4px;
    }
    .footer-col a i {
        width: 20px;
        color: var(--text-dim);
    }
    .footer-bottom {
        border-top: 1px solid var(--border-light);
        padding-top: 24px;
        text-align: center;
        font-size: 13px;
        color: var(--text-dim);
    }
    .footer-bottom a {
        color: var(--text-muted);
    }
    .footer-bottom a:hover {
        color: var(--primary-light);
    }

    @media (max-width: 820px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .footer-brand {
            grid-column: 1 / -1;
        }
        .footer-brand p {
            max-width: 100%;
        }
    }
    @media (max-width: 520px) {
        .footer {
            padding: 40px 0 20px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .footer-bottom {
            font-size: 12px;
        }
    }

    /* ===== 通用辅助 ===== */
    .section-divider {
        height: 1px;
        background: var(--border-light);
        margin: 0;
        border: none;
    }
    .text-gradient {
        background: var(--primary-gradient);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

    /* ===== 滚动条 ===== */
    ::-webkit-scrollbar {
        width: 6px;
        height: 6px;
    }
    ::-webkit-scrollbar-track {
        background: var(--bg-dark);
    }
    ::-webkit-scrollbar-thumb {
        background: var(--primary-dark);
        border-radius: 3px;
    }
    ::-webkit-scrollbar-thumb:hover {
        background: var(--primary);
    }

    /* ===== 选中高亮 ===== */
    ::selection {
        background: rgba(108, 59, 241, 0.4);
        color: #fff;
    }

    /* ===== 打印优化 ===== */
    @media print {
        .header,
        .footer,
        .article-sidebar,
        .related-section,
        .menu-toggle {
            display: none !important;
        }
        body {
            padding-top: 0;
            background: #fff;
            color: #222;
        }
        .article-content {
            border: none;
            padding: 0;
            background: #fff;
        }
        .article-banner {
            padding: 20px 0;
            background: #f5f5f5;
        }
        .article-banner h1 {
            color: #222;
        }
        .article-content .content-body {
            color: #333;
        }
        .article-content .content-body h2,
        .article-content .content-body h3,
        .article-content .content-body h4 {
            color: #111;
        }
    }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e85d2c;
            --primary-dark: #d04a1a;
            --primary-light: #f07a4a;
            --primary-glow: rgba(232, 93, 44, 0.25);
            --secondary: #1a2a3a;
            --secondary-light: #2a3f52;
            --accent: #f5c518;
            --bg-dark: #0d1b2a;
            --bg-darker: #09131f;
            --bg-card: #132433;
            --bg-card-hover: #1b3042;
            --bg-surface: #1a2e40;
            --text-primary: #f0f4f8;
            --text-secondary: #b0c4d8;
            --text-muted: #7a95b0;
            --border-color: #1e3a4f;
            --border-glow: rgba(232, 93, 44, 0.15);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(232, 93, 44, 0.15);
            --font-family: '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;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-dark);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--text-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: var(--text-primary);
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
        }
        h1 {
            font-size: 2.8rem;
        }
        h2 {
            font-size: 2.1rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.2rem;
        }
        p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header & Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(13, 27, 42, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-height);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .header.scrolled {
            background: rgba(9, 19, 31, 0.97);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 16px;
        }
        .nav-left {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(232, 93, 44, 0.12);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-link i {
            margin-right: 6px;
        }
        .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            box-shadow: 0 4px 14px var(--primary-glow);
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px var(--primary-glow);
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }
        .header-logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .header-logo span {
            color: var(--primary);
        }
        .menu-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
            transition: background var(--transition);
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 140px 0 80px;
            background: var(--bg-darker);
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.92) 30%, rgba(232, 93, 44, 0.18) 100%);
            z-index: 1;
        }
        .banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }
        .banner-content h1 {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff 60%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .banner-content p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }
        .banner-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }
        .banner-tag {
            padding: 6px 18px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--border-color);
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .banner-tag:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            padding: 16px 0;
            background: var(--bg-darker);
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--primary-light);
        }
        .breadcrumb span {
            color: var(--text-muted);
        }
        .breadcrumb i {
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }
        .section-header h2 {
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 1.1rem;
            color: var(--text-muted);
        }
        .section-header .badge {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 50px;
            background: rgba(232, 93, 44, 0.15);
            color: var(--primary-light);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            border: 1px solid rgba(232, 93, 44, 0.2);
        }
        .section-bg-alt {
            background: var(--bg-darker);
        }
        .section-bg-surface {
            background: var(--bg-surface);
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .card:hover {
            transform: translateY(-4px);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-md), var(--shadow-glow);
            background: var(--bg-card-hover);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border-bottom: 1px solid var(--border-color);
        }
        .card-body {
            padding: 20px 22px 24px;
        }
        .card-body .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 50px;
            background: rgba(232, 93, 44, 0.12);
            color: var(--primary-light);
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .card-body h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .card-body p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 14px;
            line-height: 1.6;
        }
        .card-body .card-link {
            color: var(--primary-light);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .card-body .card-link i {
            transition: transform var(--transition);
        }
        .card-body .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== Steps / Timeline ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 30px 24px;
            border: 1px solid var(--border-color);
            text-align: center;
            transition: all var(--transition);
            position: relative;
            box-shadow: var(--shadow-sm);
        }
        .step-card:hover {
            transform: translateY(-3px);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-md), var(--shadow-glow);
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(232, 93, 44, 0.15);
            color: var(--primary);
            font-size: 1.4rem;
            font-weight: 800;
            margin-bottom: 18px;
            border: 2px solid rgba(232, 93, 44, 0.2);
            transition: all var(--transition);
        }
        .step-card:hover .step-number {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 0 24px var(--primary-glow);
        }
        .step-card h4 {
            font-size: 1.1rem;
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== Features ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .feature-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(232, 93, 44, 0.12);
            color: var(--primary);
            font-size: 1.4rem;
            margin-bottom: 16px;
            transition: all var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 0 20px var(--primary-glow);
        }
        .feature-card h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        .faq-item.open {
            border-color: rgba(232, 93, 44, 0.3);
        }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.02rem;
            color: var(--text-primary);
            background: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .faq-question i {
            font-size: 1.1rem;
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--bg-darker);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: 2.4rem;
            margin-bottom: 16px;
        }
        .cta-inner p {
            font-size: 1.1rem;
            color: var(--text-muted);
            margin-bottom: 32px;
        }
        .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 18px var(--primary-glow);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px var(--primary-glow);
            color: #fff;
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            border: 1px solid var(--border-color);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--text-muted);
            transform: translateY(-2px);
            color: var(--text-primary);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-text {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
        }
        .footer-brand .logo-text span {
            color: var(--primary);
        }
        .footer-brand p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-top: 12px;
            max-width: 360px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.92rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
        }
        .footer-col a i {
            margin-right: 8px;
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== Pagination (simple) ===== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 40px;
        }
        .pagination-wrap a,
        .pagination-wrap span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            font-size: 0.92rem;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .pagination-wrap a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(232, 93, 44, 0.08);
        }
        .pagination-wrap .active-page {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .banner-content h1 {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .nav-left,
            .nav-right {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--bg-darker);
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border-color);
                gap: 6px;
            }
            .nav-left.open,
            .nav-right.open {
                display: flex;
            }
            .nav-right {
                top: calc(var(--header-height) + 200px);
            }
            .nav-left.open+.nav-right.open {
                top: calc(var(--header-height) + 200px);
            }
            .menu-toggle {
                display: block;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .header-logo {
                order: 0;
                font-size: 1.15rem;
            }
            .menu-toggle {
                order: 1;
            }
            .nav-left {
                order: 2;
            }
            .nav-right {
                order: 3;
            }
            .nav-link {
                padding: 10px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-link.active::after {
                display: none;
            }
            .nav-cta {
                text-align: center;
            }
            .page-banner {
                padding: 110px 0 60px;
                min-height: 300px;
            }
            .banner-content h1 {
                font-size: 1.8rem;
            }
            .banner-content p {
                font-size: 1rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-inner h2 {
                font-size: 1.8rem;
            }
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                max-width: 320px;
                justify-content: center;
            }
            .faq-question {
                padding: 14px 18px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 18px 14px;
                font-size: 0.9rem;
            }
            .step-card {
                padding: 20px 16px;
            }
            .step-number {
                width: 42px;
                height: 42px;
                font-size: 1.2rem;
            }
            .card-body {
                padding: 16px 18px 20px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .banner-content h1 {
                font-size: 1.5rem;
            }
            .banner-content p {
                font-size: 0.92rem;
            }
            .banner-tag {
                font-size: 0.78rem;
                padding: 4px 14px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .footer-brand .logo-text {
                font-size: 1.2rem;
            }
            .pagination-wrap a,
            .pagination-wrap span {
                width: 36px;
                height: 36px;
                font-size: 0.82rem;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== Smooth scroll offset ===== */
        .scroll-offset {
            scroll-margin-top: calc(var(--header-height) + 16px);
        }