/* roulang page: index */
/* ========== 设计变量 ========== */
:root {
  --primary: #0a7e3c;
  --primary-dark: #05632d;
  --primary-light: #e8f5ee;
  --accent: #f0b429;
  --accent-dark: #d49a1a;
  --accent-light: #fef7e0;
  --red: #d94f30;
  --red-light: #fde8e3;
  --dark: #0d1b2a;
  --dark-light: #1b2d42;
  --gray-50: #f8f9fc;
  --gray-100: #eef0f5;
  --gray-200: #dde0e7;
  --gray-300: #c4c8d0;
  --gray-400: #9ea3ad;
  --gray-500: #6b7080;
  --gray-600: #4a4f5e;
  --gray-700: #2d3140;
  --white: #ffffff;
  --body-bg: #f8f9fc;
  --body-text: #2d3140;
  --text-weak: #6b7080;
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --border-radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --shadow-accent: 0 4px 24px rgba(240,180,41,0.35);
  --shadow-primary: 0 4px 24px rgba(10,126,60,0.25);
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --container: 1200px;
  --header-h: 76px;
}

/* ========== 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-sans); font-size: 16px; line-height: 1.7; color: var(--body-text); background: var(--body-bg); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
button { cursor: pointer; font-family: inherit; border: none; background: none; transition: var(--transition); }
button:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
input, textarea { font-family: inherit; font-size: 1rem; border: 1px solid var(--gray-200); border-radius: var(--border-radius-sm); padding: 12px 16px; background: var(--white); transition: var(--transition); }
input:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(10,126,60,0.12); }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; color: var(--dark); font-weight: 700; }
h1 { font-size: 2.8rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.15rem; }
p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

/* ========== 容器 ========== */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 880px; }

/* ========== 头部 / 导航 (品牌活动风格) ========== */
.header {
  position: fixed; top: 0; left: 0; width: 100%; height: var(--header-h);
  background: rgba(13,27,42,0.92); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  z-index: 1000; border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition);
}
.header.scrolled { background: rgba(13,27,42,0.98); box-shadow: 0 2px 32px rgba(0,0,0,0.3); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.header .logo { display: flex; align-items: center; gap: 10px; font-size: 1.5rem; font-weight: 800; color: var(--white); letter-spacing: -0.5px; }
.header .logo-icon { width: 36px; height: 36px; background: linear-gradient(135deg, var(--primary), #0fb85a); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: white; font-size: 1.2rem; }
.header .logo span { background: linear-gradient(135deg, var(--white), #c8e6d9); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.header .logo .badge { font-size: 0.6rem; font-weight: 600; background: var(--accent); color: var(--dark); padding: 2px 8px; border-radius: 20px; -webkit-text-fill-color: var(--dark); margin-left: 4px; letter-spacing: 0.3px; }
.nav { display: flex; align-items: center; gap: 8px; }
.nav a { color: rgba(255,255,255,0.7); font-size: 0.95rem; font-weight: 500; padding: 8px 18px; border-radius: 30px; transition: var(--transition); position: relative; }
.nav a:hover { color: var(--white); background: rgba(255,255,255,0.08); }
.nav a.active { color: var(--white); background: rgba(10,126,60,0.35); }
.nav a.active::after { display: none; }
.nav .nav-cta { background: var(--accent); color: var(--dark); font-weight: 700; padding: 10px 28px; border-radius: 30px; box-shadow: var(--shadow-accent); }
.nav .nav-cta:hover { background: var(--accent-dark); color: var(--dark); transform: translateY(-1px); box-shadow: 0 6px 30px rgba(240,180,41,0.4); }
.nav .nav-cta i { margin-right: 6px; }

/* 移动端菜单按钮 */
.menu-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; background: none; border: none; }
.menu-toggle span { width: 26px; height: 2.5px; background: var(--white); border-radius: 4px; transition: var(--transition); }
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); }

/* ========== Hero ========== */
.hero {
  min-height: 92vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #0d1b2a 0%, #1a2d42 50%, #0d1b2a 100%);
  position: relative; overflow: hidden; padding-top: var(--header-h);
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.18; }
.hero-overlay { position: absolute; inset: 0; background: radial-gradient(ellipse at 30% 50%, rgba(10,126,60,0.25) 0%, transparent 70%), radial-gradient(ellipse at 70% 20%, rgba(240,180,41,0.10) 0%, transparent 50%); z-index: 1; }
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 850px; padding: 40px 24px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.12); padding: 6px 18px; border-radius: 30px; color: var(--accent); font-size: 0.85rem; font-weight: 600; margin-bottom: 24px; backdrop-filter: blur(4px); letter-spacing: 0.5px; }
.hero-badge i { font-size: 0.75rem; }
.hero h1 { font-size: 3.6rem; font-weight: 800; color: var(--white); margin-bottom: 20px; letter-spacing: -1px; line-height: 1.15; }
.hero h1 .highlight { background: linear-gradient(135deg, var(--accent), #ffd966); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p { font-size: 1.2rem; color: rgba(255,255,255,0.7); max-width: 640px; margin: 0 auto 36px; line-height: 1.7; }
.hero-actions { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
.hero-actions .btn-primary { background: var(--accent); color: var(--dark); font-weight: 700; padding: 16px 40px; border-radius: 40px; font-size: 1.1rem; box-shadow: var(--shadow-accent); display: inline-flex; align-items: center; gap: 10px; }
.hero-actions .btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 36px rgba(240,180,41,0.45); }
.hero-actions .btn-outline { border: 2px solid rgba(255,255,255,0.25); color: var(--white); font-weight: 600; padding: 14px 34px; border-radius: 40px; font-size: 1.05rem; display: inline-flex; align-items: center; gap: 8px; }
.hero-actions .btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,0.08); transform: translateY(-2px); }
.hero-stats { display: flex; justify-content: center; gap: 48px; margin-top: 48px; flex-wrap: wrap; }
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 2rem; font-weight: 800; color: var(--white); }
.hero-stat .num .plus { color: var(--accent); }
.hero-stat .label { font-size: 0.85rem; color: rgba(255,255,255,0.5); margin-top: 2px; }

/* ========== 通用板块 ========== */
.section { padding: 80px 0; }
.section-alt { background: var(--white); }
.section-dark { background: var(--dark); color: rgba(255,255,255,0.8); }
.section-dark h2, .section-dark h3 { color: var(--white); }
.section-head { text-align: center; max-width: 700px; margin: 0 auto 56px; }
.section-head h2 { margin-bottom: 12px; }
.section-head p { color: var(--text-weak); font-size: 1.1rem; }
.section-head .tag { display: inline-flex; align-items: center; gap: 6px; background: var(--primary-light); color: var(--primary); font-weight: 600; font-size: 0.8rem; padding: 4px 14px; border-radius: 20px; margin-bottom: 12px; }
.section-divider { width: 60px; height: 4px; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 4px; margin: 16px auto 0; }

/* ========== 卡片通用 ========== */
.card { background: var(--white); border-radius: var(--border-radius); box-shadow: var(--shadow-sm); transition: var(--transition); overflow: hidden; }
.card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.card-img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.card-body { padding: 24px; }
.card-body h3 { font-size: 1.2rem; margin-bottom: 8px; }
.card-body p { color: var(--text-weak); font-size: 0.95rem; }
.card .badge { display: inline-block; font-size: 0.7rem; font-weight: 600; padding: 3px 12px; border-radius: 20px; background: var(--primary-light); color: var(--primary); margin-bottom: 10px; }

/* ========== 平台简介 ========== */
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.intro-image { border-radius: var(--border-radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.intro-image img { width: 100%; height: 100%; object-fit: cover; min-height: 360px; }
.intro-text h2 { margin-bottom: 16px; }
.intro-text .lead { font-size: 1.15rem; color: var(--text-weak); margin-bottom: 20px; }
.intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
.intro-features li { display: flex; align-items: center; gap: 10px; font-size: 0.95rem; color: var(--gray-600); }
.intro-features li i { color: var(--primary); font-size: 0.85rem; width: 20px; text-align: center; }

/* ========== 核心优势 ========== */
.advantages-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.adv-card { background: var(--white); border-radius: var(--border-radius); padding: 32px 24px; text-align: center; box-shadow: var(--shadow-sm); transition: var(--transition); border: 1px solid var(--gray-100); }
.adv-card:hover { box-shadow: var(--shadow); transform: translateY(-6px); }
.adv-icon { width: 60px; height: 60px; margin: 0 auto 18px; background: var(--primary-light); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 1.6rem; color: var(--primary); transition: var(--transition); }
.adv-card:hover .adv-icon { background: var(--primary); color: var(--white); }
.adv-card h3 { font-size: 1.15rem; margin-bottom: 8px; }
.adv-card p { color: var(--text-weak); font-size: 0.92rem; }

/* ========== 登录指南 / 分类入口 ========== */
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.guide-card { background: var(--white); border-radius: var(--border-radius); overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); border: 1px solid var(--gray-100); }
.guide-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.guide-card .card-img { aspect-ratio: 16/9; }
.guide-card .card-body { padding: 20px 24px 24px; }
.guide-card .card-body h3 { font-size: 1.1rem; display: flex; align-items: center; gap: 8px; }
.guide-card .card-body h3 .step { display: inline-flex; align-items: center; justify-content: center; width: 26px; height: 26px; border-radius: 50%; background: var(--primary); color: white; font-size: 0.75rem; font-weight: 700; }
.guide-card .card-body p { font-size: 0.9rem; color: var(--text-weak); margin-top: 6px; }
.guide-card .card-body .tag-link { display: inline-block; margin-top: 12px; font-size: 0.85rem; font-weight: 600; color: var(--primary); }
.guide-card .card-body .tag-link i { transition: transform 0.2s; }
.guide-card:hover .tag-link i { transform: translateX(4px); }

/* ========== 最新资讯 / CMS 列表 ========== */
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.news-card { display: flex; background: var(--white); border-radius: var(--border-radius); overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); border: 1px solid var(--gray-100); }
.news-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.news-card .news-thumb { width: 200px; min-height: 150px; flex-shrink: 0; object-fit: cover; }
.news-card .news-body { padding: 20px 24px; flex: 1; display: flex; flex-direction: column; justify-content: center; }
.news-card .news-body .news-cat { font-size: 0.7rem; font-weight: 600; color: var(--primary); background: var(--primary-light); padding: 2px 12px; border-radius: 20px; display: inline-block; width: fit-content; margin-bottom: 8px; }
.news-card .news-body h3 { font-size: 1.05rem; margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card .news-body p { font-size: 0.88rem; color: var(--text-weak); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card .news-body .news-meta { display: flex; align-items: center; gap: 16px; margin-top: 10px; font-size: 0.78rem; color: var(--gray-400); }
.news-card .news-body .news-meta i { margin-right: 4px; }
.news-empty { grid-column: 1 / -1; text-align: center; padding: 48px 24px; color: var(--text-weak); background: var(--gray-50); border-radius: var(--border-radius); }
.news-empty i { font-size: 2.4rem; color: var(--gray-300); margin-bottom: 12px; display: block; }

/* ========== 数据统计 ========== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; text-align: center; }
.stat-item { padding: 32px 16px; background: rgba(255,255,255,0.04); border-radius: var(--border-radius); border: 1px solid rgba(255,255,255,0.06); transition: var(--transition); }
.stat-item:hover { background: rgba(255,255,255,0.08); transform: translateY(-3px); }
.stat-item .num { font-size: 2.6rem; font-weight: 800; color: var(--accent); line-height: 1.1; }
.stat-item .num .unit { font-size: 1.2rem; color: rgba(255,255,255,0.6); font-weight: 400; }
.stat-item .label { font-size: 0.95rem; color: rgba(255,255,255,0.6); margin-top: 6px; }

/* ========== FAQ ========== */
.faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--white); border-radius: var(--border-radius-sm); border: 1px solid var(--gray-100); overflow: hidden; transition: var(--transition); }
.faq-item:hover { border-color: var(--gray-200); }
.faq-q { padding: 18px 24px; font-weight: 600; font-size: 1rem; display: flex; align-items: center; justify-content: space-between; cursor: pointer; color: var(--dark); user-select: none; }
.faq-q i { font-size: 0.85rem; color: var(--gray-400); transition: transform 0.3s; }
.faq-item.open .faq-q i { transform: rotate(180deg); color: var(--primary); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease; padding: 0 24px; color: var(--text-weak); font-size: 0.95rem; 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%, #05632d 100%); position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at 20% 80%, rgba(240,180,41,0.15) 0%, transparent 60%); }
.cta-content { position: relative; z-index: 1; text-align: center; padding: 72px 24px; }
.cta-content h2 { color: var(--white); font-size: 2.2rem; margin-bottom: 12px; }
.cta-content p { color: rgba(255,255,255,0.8); font-size: 1.1rem; max-width: 560px; margin: 0 auto 32px; }
.cta-content .btn-cta { background: var(--accent); color: var(--dark); font-weight: 700; padding: 16px 44px; border-radius: 40px; font-size: 1.1rem; display: inline-flex; align-items: center; gap: 10px; box-shadow: var(--shadow-accent); }
.cta-content .btn-cta:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 36px rgba(240,180,41,0.45); }

/* ========== 页脚 ========== */
.footer { background: var(--dark); color: rgba(255,255,255,0.6); padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand .logo { display: flex; align-items: center; gap: 10px; font-size: 1.3rem; font-weight: 800; color: var(--white); margin-bottom: 12px; }
.footer-brand .logo .logo-icon { width: 32px; height: 32px; background: linear-gradient(135deg, var(--primary), #0fb85a); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: white; font-size: 1rem; }
.footer-brand p { font-size: 0.9rem; max-width: 280px; }
.footer-col h4 { color: var(--white); font-size: 0.95rem; font-weight: 600; margin-bottom: 16px; }
.footer-col a { display: block; color: rgba(255,255,255,0.5); font-size: 0.88rem; padding: 4px 0; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); margin-top: 40px; padding: 20px 0; text-align: center; font-size: 0.82rem; color: rgba(255,255,255,0.3); }
.footer-bottom a { color: rgba(255,255,255,0.4); }

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  h1 { font-size: 2.4rem; }
  h2 { font-size: 1.7rem; }
  .hero h1 { font-size: 2.8rem; }
  .advantages-grid, .guide-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .intro-grid { grid-template-columns: 1fr; gap: 32px; }
  .intro-image { order: -1; }
  .news-card { flex-direction: column; }
  .news-card .news-thumb { width: 100%; height: 180px; }
}

@media (max-width: 768px) {
  :root { --header-h: 66px; }
  .nav { position: fixed; top: var(--header-h); left: 0; width: 100%; background: rgba(13,27,42,0.98); flex-direction: column; padding: 20px 24px; gap: 6px; display: none; backdrop-filter: blur(18px); border-bottom: 1px solid rgba(255,255,255,0.06); }
  .nav.open { display: flex; }
  .nav a { width: 100%; padding: 12px 18px; border-radius: 8px; }
  .nav .nav-cta { text-align: center; }
  .menu-toggle { display: flex; }
  .hero { min-height: 80vh; }
  .hero h1 { font-size: 2.2rem; }
  .hero p { font-size: 1rem; }
  .hero-stats { gap: 24px; }
  .hero-stat .num { font-size: 1.5rem; }
  .section { padding: 56px 0; }
  .section-head { margin-bottom: 36px; }
  .advantages-grid, .guide-grid { grid-template-columns: 1fr; gap: 18px; }
  .news-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat-item .num { font-size: 2rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .intro-features { grid-template-columns: 1fr; }
  .hero-actions .btn-primary, .hero-actions .btn-outline { width: 100%; justify-content: center; }
  .cta-content h2 { font-size: 1.7rem; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  h1 { font-size: 1.9rem; }
  h2 { font-size: 1.4rem; }
  .hero h1 { font-size: 1.8rem; }
  .hero-badge { font-size: 0.75rem; }
  .hero-stats { flex-direction: column; gap: 16px; align-items: center; }
  .stat-item .num { font-size: 1.6rem; }
  .adv-card { padding: 24px 16px; }
  .faq-q { padding: 14px 18px; font-size: 0.92rem; }
  .faq-a { font-size: 0.88rem; }
  .cta-content { padding: 48px 16px; }
  .cta-content .btn-cta { width: 100%; justify-content: center; }
  .footer-grid { gap: 20px; }
}

/* roulang page: category1 */
/* ===== Design Variables ===== */
    :root {
      --primary: #1f8a4c;
      --primary-dark: #156f3a;
      --primary-light: #e8f5ee;
      --primary-glow: rgba(31, 138, 76, 0.15);
      --accent: #f5a623;
      --accent-dark: #d48f1a;
      --accent-light: #fef3e0;
      --bg-body: #f7f9f8;
      --bg-white: #ffffff;
      --bg-card: #ffffff;
      --bg-dark: #1a2a3a;
      --bg-dark-soft: #233344;
      --text-primary: #1a2a3a;
      --text-secondary: #4a5a6a;
      --text-weak: #8a9aaa;
      --text-white: #ffffff;
      --text-link: var(--primary);
      --border-light: #e6ece9;
      --border-card: #eef2f0;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --radius-xl: 28px;
      --shadow-sm: 0 2px 8px rgba(26,42,58,0.06);
      --shadow-md: 0 6px 24px rgba(26,42,58,0.08);
      --shadow-lg: 0 16px 48px rgba(26,42,58,0.12);
      --shadow-card: 0 4px 16px rgba(26,42,58,0.05);
      --shadow-card-hover: 0 12px 36px rgba(26,42,58,0.10);
      --transition: all 0.25s ease;
      --max-width: 1200px;
      --nav-height: 72px;
      --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
      --gap-section: 80px;
      --gap-block: 48px;
    }

    /* ===== 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);
      font-size: 16px;
      line-height: 1.7;
      color: var(--text-primary);
      background: var(--bg-body);
    }
    a { color: var(--text-link); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary-dark); }
    img { max-width: 100%; height: auto; display: block; }
    button, input, textarea { font-family: inherit; font-size: inherit; }
    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: clamp(2rem, 5vw, 3.2rem); }
    h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); margin-bottom: 0.5em; }
    h3 { font-size: 1.25rem; }
    h4 { font-size: 1.05rem; }
    p { color: var(--text-secondary); margin-bottom: 1em; }

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

    /* ===== Buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 12px 28px;
      border: none;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 1rem;
      cursor: pointer;
      transition: var(--transition);
      text-decoration: none;
      line-height: 1.4;
    }
    .btn-primary {
      background: var(--primary);
      color: var(--text-white);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      color: #fff;
      box-shadow: 0 6px 20px var(--primary-glow);
      transform: translateY(-2px);
    }
    .btn-accent {
      background: var(--accent);
      color: var(--text-primary);
    }
    .btn-accent:hover {
      background: var(--accent-dark);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(245,166,35,0.25);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary);
    }
    .btn-outline:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-2px);
    }
    .btn-lg { padding: 16px 36px; font-size: 1.1rem; border-radius: var(--radius-lg); }
    .btn-sm { padding: 8px 18px; font-size: 0.9rem; border-radius: var(--radius-sm); }

    /* ===== Section Spacing ===== */
    .section { padding: var(--gap-section) 0; }
    .section-header {
      text-align: center;
      margin-bottom: var(--gap-block);
    }
    .section-header p {
      max-width: 640px;
      margin: 0 auto;
      font-size: 1.1rem;
    }

    /* ===== Header / Nav ===== */
    .header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: var(--nav-height);
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
      z-index: 1000;
      transition: var(--transition);
    }
    .header .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 100%;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--primary);
      text-decoration: none;
    }
    .logo-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      background: var(--primary);
      color: #fff;
      border-radius: var(--radius-md);
      font-size: 1.2rem;
    }
    .logo span:last-child {
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .nav {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .nav a {
      padding: 8px 16px;
      border-radius: var(--radius-sm);
      font-weight: 500;
      color: var(--text-secondary);
      text-decoration: none;
      transition: var(--transition);
      font-size: 0.95rem;
      position: relative;
    }
    .nav a:hover {
      color: var(--primary);
      background: var(--primary-light);
    }
    .nav a.active {
      color: var(--primary);
      background: var(--primary-light);
      font-weight: 600;
    }
    .nav a.active::after {
      content: '';
      position: absolute;
      bottom: 2px;
      left: 50%;
      transform: translateX(-50%);
      width: 20px;
      height: 3px;
      background: var(--primary);
      border-radius: 4px;
    }
    .nav-cta {
      background: var(--primary) !important;
      color: #fff !important;
      border-radius: var(--radius-md) !important;
      padding: 10px 22px !important;
      font-weight: 600 !important;
      gap: 6px;
    }
    .nav-cta:hover {
      background: var(--primary-dark) !important;
      color: #fff !important;
      transform: translateY(-1px);
      box-shadow: 0 4px 16px var(--primary-glow);
    }
    .nav-cta i { font-size: 0.9rem; }

    /* mobile toggle */
    .nav-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-primary);
      cursor: pointer;
      padding: 6px;
    }

    /* ===== Hero / Banner ===== */
    .page-banner {
      padding: calc(var(--nav-height) + 60px) 0 60px;
      background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-soft) 100%);
      position: relative;
      overflow: hidden;
      min-height: 320px;
      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: 0.20;
      z-index: 0;
    }
    .page-banner .container {
      position: relative;
      z-index: 1;
      text-align: center;
    }
    .page-banner h1 {
      color: var(--text-white);
      margin-bottom: 16px;
      font-weight: 800;
    }
    .page-banner p {
      color: rgba(255,255,255,0.75);
      font-size: 1.15rem;
      max-width: 640px;
      margin: 0 auto 20px;
    }
    .breadcrumb {
      display: flex;
      justify-content: center;
      gap: 8px;
      font-size: 0.9rem;
      color: rgba(255,255,255,0.55);
      margin-bottom: 20px;
    }
    .breadcrumb a { color: rgba(255,255,255,0.7); }
    .breadcrumb a:hover { color: #fff; }
    .breadcrumb span { color: rgba(255,255,255,0.4); }

    /* ===== Cards ===== */
    .card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-card);
      box-shadow: var(--shadow-card);
      padding: 28px 24px;
      transition: var(--transition);
    }
    .card:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-4px);
    }
    .card-icon {
      width: 56px;
      height: 56px;
      border-radius: var(--radius-md);
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      margin-bottom: 16px;
    }
    .card h3 { margin-bottom: 8px; }
    .card p { font-size: 0.95rem; margin-bottom: 0; }

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

    /* ===== Step Guide ===== */
    .step-card {
      display: flex;
      gap: 24px;
      background: var(--bg-card);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-card);
      box-shadow: var(--shadow-card);
      padding: 28px;
      transition: var(--transition);
      align-items: flex-start;
    }
    .step-card:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-3px);
    }
    .step-num {
      flex-shrink: 0;
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.3rem;
    }
    .step-body { flex: 1; }
    .step-body h3 { margin-bottom: 6px; }
    .step-body p { font-size: 0.95rem; margin-bottom: 0; }
    .step-img {
      flex-shrink: 0;
      width: 180px;
      border-radius: var(--radius-sm);
      overflow: hidden;
      background: var(--bg-body);
    }
    .step-img img {
      width: 100%;
      height: 120px;
      object-fit: cover;
    }

    /* ===== Stats ===== */
    .stat-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .stat-item {
      text-align: center;
      padding: 28px 16px;
      background: var(--bg-card);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-card);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .stat-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .stat-num {
      font-size: 2.4rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
    }
    .stat-label {
      font-size: 0.95rem;
      color: var(--text-secondary);
      margin-top: 6px;
    }

    /* ===== Tags / Badges ===== */
    .tag {
      display: inline-block;
      padding: 4px 14px;
      border-radius: 20px;
      font-size: 0.8rem;
      font-weight: 500;
      background: var(--primary-light);
      color: var(--primary);
    }
    .tag-accent {
      background: var(--accent-light);
      color: var(--accent-dark);
    }
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      padding: 2px 12px;
      border-radius: 20px;
      font-size: 0.75rem;
      font-weight: 600;
      background: var(--primary);
      color: #fff;
    }

    /* ===== FAQ ===== */
    .faq-list { max-width: 800px; margin: 0 auto; }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item:hover { border-color: var(--primary); }
    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 18px 24px;
      cursor: pointer;
      font-weight: 600;
      color: var(--text-primary);
      background: none;
      border: none;
      width: 100%;
      text-align: left;
      font-size: 1rem;
      transition: var(--transition);
      gap: 12px;
    }
    .faq-question:hover { color: var(--primary); }
    .faq-question i { transition: transform 0.3s; color: var(--primary); font-size: 0.85rem; }
    .faq-item.open .faq-question i { transform: rotate(180deg); }
    .faq-answer {
      padding: 0 24px 18px;
      color: var(--text-secondary);
      font-size: 0.95rem;
      display: none;
      line-height: 1.7;
    }
    .faq-item.open .faq-answer { display: block; }

    /* ===== CTA ===== */
    .cta-section {
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: var(--text-white);
      text-align: center;
      padding: 64px 0;
      border-radius: var(--radius-lg);
      margin: var(--gap-section) 0;
      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: 0.10;
      z-index: 0;
    }
    .cta-section .container { position: relative; z-index: 1; }
    .cta-section h2 { color: #fff; margin-bottom: 12px; }
    .cta-section p { color: rgba(255,255,255,0.8); max-width: 560px; margin: 0 auto 28px; font-size: 1.05rem; }
    .cta-section .btn { background: #fff; color: var(--primary); font-weight: 700; }
    .cta-section .btn:hover { background: var(--accent); color: #fff; transform: translateY(-3px); box-shadow: 0 8px 30px rgba(0,0,0,0.15); }

    /* ===== Safety Tips ===== */
    .safety-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .safety-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      padding: 20px;
      background: var(--bg-card);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-card);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .safety-item:hover { box-shadow: var(--shadow-card-hover); }
    .safety-icon {
      flex-shrink: 0;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
    }
    .safety-item h4 { font-size: 1rem; margin-bottom: 4px; }
    .safety-item p { font-size: 0.9rem; margin-bottom: 0; }

    /* ===== Footer ===== */
    .footer {
      background: var(--bg-dark);
      color: rgba(255,255,255,0.7);
      padding: 56px 0 28px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 36px;
    }
    .footer-brand .logo { color: #fff; margin-bottom: 16px; }
    .footer-brand .logo span:last-child { -webkit-text-fill-color: #fff; background: none; }
    .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.55); max-width: 320px; }
    .footer-col h4 {
      color: #fff;
      font-size: 1rem;
      margin-bottom: 16px;
      font-weight: 600;
    }
    .footer-col a {
      display: block;
      color: rgba(255,255,255,0.55);
      font-size: 0.9rem;
      padding: 4px 0;
      transition: var(--transition);
    }
    .footer-col a:hover { color: #fff; padding-left: 4px; }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.08);
      padding-top: 20px;
      text-align: center;
      font-size: 0.85rem;
      color: rgba(255,255,255,0.35);
    }
    .footer-bottom a { color: rgba(255,255,255,0.45); }
    .footer-bottom a:hover { color: #fff; }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .stat-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
      .step-img { width: 140px; }
      .step-img img { height: 100px; }
    }
    @media (max-width: 768px) {
      :root { --gap-section: 48px; --gap-block: 32px; }
      .nav { display: none; }
      .nav-toggle { display: block; }
      .nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(12px);
        padding: 16px 24px;
        border-bottom: 1px solid var(--border-light);
        box-shadow: var(--shadow-md);
        gap: 4px;
      }
      .nav.open a { width: 100%; padding: 12px 16px; }
      .nav.open .nav-cta { margin-top: 8px; text-align: center; justify-content: center; }
      .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; }
      .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
      .step-card { flex-direction: column; }
      .step-img { width: 100%; }
      .step-img img { height: 160px; }
      .safety-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; gap: 28px; }
      .page-banner { min-height: 240px; padding: calc(var(--nav-height) + 40px) 0 40px; }
      .page-banner h1 { font-size: 1.8rem; }
      .section-header p { font-size: 1rem; }
      .cta-section { padding: 40px 0; border-radius: var(--radius-md); }
    }
    @media (max-width: 520px) {
      .container { padding: 0 16px; }
      .stat-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
      .stat-num { font-size: 1.8rem; }
      .card { padding: 20px 16px; }
      .step-card { padding: 20px; }
      .faq-question { padding: 14px 16px; font-size: 0.95rem; }
      .faq-answer { padding: 0 16px 14px; }
      .btn-lg { padding: 14px 28px; font-size: 1rem; }
      .page-banner h1 { font-size: 1.5rem; }
    }

    /* ===== Utility ===== */
    .text-center { text-align: center; }
    .mt-1 { margin-top: 12px; }
    .mt-2 { margin-top: 24px; }
    .mb-1 { margin-bottom: 12px; }
    .mb-2 { margin-bottom: 24px; }
    .gap-row { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --primary: #e96f1a;
  --primary-dark: #cc5a0f;
  --primary-light: #f5a623;
  --primary-bg: rgba(233, 111, 26, 0.08);
  --secondary: #1a2a3a;
  --secondary-light: #2a3f55;
  --accent: #f7c948;
  --success: #22c55e;
  --info: #3b82f6;
  --bg: #f8f9fc;
  --bg-white: #ffffff;
  --bg-dark: #0f1724;
  --text: #1e293b;
  --text-light: #64748b;
  --text-muted: #94a3b8;
  --text-white: #f1f5f9;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --shadow: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.10);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
  --transition: 0.25s ease;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1200px;
  --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);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  padding-top: var(--nav-height);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
a:focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; border-radius: var(--radius-xs); }
button, input, textarea { font-family: var(--font); font-size: 1rem; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; color: var(--text); font-weight: 700; }
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-title { font-size: 2rem; margin-bottom: 0.5rem; text-align: center; }
.section-sub { font-size: 1.05rem; color: var(--text-light); text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-divider { width: 60px; height: 4px; background: var(--primary); border-radius: 4px; margin: 12px auto 32px; }
.tag {
  display: inline-block; padding: 4px 14px; background: var(--primary-bg); color: var(--primary);
  border-radius: 20px; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.3px;
}
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px;
  border-radius: 50px; font-weight: 600; font-size: 0.95rem; border: none;
  cursor: pointer; transition: all var(--transition); text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(233,111,26,0.35); }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(233,111,26,0.45); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(233,111,26,0.3); }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-outline:active { transform: translateY(0); }
.btn-white { background: #fff; color: var(--primary); box-shadow: var(--shadow); }
.btn-white:hover { background: #f8f9fc; transform: translateY(-2px); box-shadow: var(--shadow-md); }
.badge {
  display: inline-block; padding: 2px 12px; border-radius: 20px; font-size: 0.75rem;
  font-weight: 600; background: var(--primary-bg); color: var(--primary);
}
.badge-info { background: rgba(59,130,246,0.1); color: var(--info); }
.badge-success { background: rgba(34,197,94,0.1); color: var(--success); }
/* ===== 导航 ===== */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.92); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border); height: var(--nav-height);
  transition: background var(--transition);
}
.header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.logo {
  display: flex; align-items: center; gap: 10px; font-size: 1.35rem; font-weight: 800;
  color: var(--text); text-decoration: none;
}
.logo-icon { width: 38px; height: 38px; background: var(--primary); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1.2rem; }
.logo span:last-child { color: var(--primary); }
.nav { display: flex; align-items: center; gap: 8px; }
.nav a {
  padding: 8px 18px; border-radius: 50px; font-weight: 500; font-size: 0.9rem;
  color: var(--text-light); text-decoration: none; transition: all var(--transition); position: relative;
}
.nav a:hover { color: var(--primary); background: var(--primary-bg); }
.nav a.active { color: var(--primary); background: var(--primary-bg); font-weight: 600; }
.nav a.nav-cta {
  background: var(--primary); color: #fff; font-weight: 600;
  box-shadow: 0 4px 12px rgba(233,111,26,0.3); padding: 8px 22px;
}
.nav a.nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(233,111,26,0.4); }
.nav a.nav-cta i { font-size: 0.85rem; }
.nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--text); cursor: pointer; padding: 8px; }
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav { position: fixed; top: var(--nav-height); left: 0; right: 0; background: var(--bg-white); flex-direction: column; padding: 20px 24px; gap: 12px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md); transform: translateY(-120%); opacity: 0; pointer-events: none; transition: all 0.35s ease; }
  .nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav a { width: 100%; text-align: center; padding: 12px 18px; }
  .nav a.nav-cta { text-align: center; }
}
/* ===== 文章 Hero ===== */
.article-hero {
  position: relative; padding: 80px 0 60px; background: var(--bg-dark); color: var(--text-white);
  background-image: url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; background-attachment: fixed;
  min-height: 320px; display: flex; align-items: center;
}
.article-hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,23,36,0.85) 0%, rgba(15,23,36,0.55) 100%); }
.article-hero .container { position: relative; z-index: 2; }
.article-hero .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-bottom: 20px; flex-wrap: wrap; }
.article-hero .breadcrumb a { color: rgba(255,255,255,0.7); }
.article-hero .breadcrumb a:hover { color: #fff; }
.article-hero .breadcrumb .sep { color: rgba(255,255,255,0.4); }
.article-hero .breadcrumb .current { color: var(--accent); }
.article-hero .hero-category { margin-bottom: 16px; }
.article-hero .hero-category .tag { background: rgba(233,111,26,0.2); color: var(--accent); font-size: 0.8rem; }
.article-hero h1 { font-size: 2.4rem; font-weight: 800; color: #fff; max-width: 800px; line-height: 1.25; margin-bottom: 20px; }
.article-hero .hero-meta { display: flex; align-items: center; gap: 24px; color: rgba(255,255,255,0.7); font-size: 0.9rem; flex-wrap: wrap; }
.article-hero .hero-meta i { margin-right: 6px; }
.article-hero .hero-meta span { display: inline-flex; align-items: center; }
@media (max-width: 768px) {
  .article-hero { padding: 60px 0 40px; min-height: 240px; }
  .article-hero h1 { font-size: 1.6rem; }
  .article-hero .hero-meta { gap: 16px; font-size: 0.8rem; }
}
/* ===== 文章正文 ===== */
.article-main { padding: 60px 0 80px; }
.article-layout { display: grid; grid-template-columns: 1fr 320px; gap: 48px; }
.article-content { background: var(--bg-white); border-radius: var(--radius); padding: 48px; box-shadow: var(--shadow); border: 1px solid var(--border); }
.article-content .post-body { font-size: 1.05rem; line-height: 1.85; color: var(--text); }
.article-content .post-body p { margin-bottom: 1.5em; }
.article-content .post-body h2 { font-size: 1.5rem; margin-top: 2em; margin-bottom: 0.75em; padding-bottom: 0.4em; border-bottom: 2px solid var(--border-light); }
.article-content .post-body h3 { font-size: 1.2rem; margin-top: 1.6em; margin-bottom: 0.5em; }
.article-content .post-body ul, .article-content .post-body ol { margin-bottom: 1.5em; padding-left: 1.5em; }
.article-content .post-body ul li { list-style: disc; margin-bottom: 0.4em; }
.article-content .post-body ol li { list-style: decimal; margin-bottom: 0.4em; }
.article-content .post-body img { border-radius: var(--radius-sm); margin: 1.5em 0; box-shadow: var(--shadow); }
.article-content .post-body blockquote { border-left: 4px solid var(--primary); background: var(--primary-bg); padding: 16px 24px; margin: 1.5em 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-light); font-style: italic; }
.article-content .post-body a { color: var(--primary); text-decoration: underline; }
.article-content .post-body a:hover { color: var(--primary-dark); }
.article-footer-info { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border); }
.article-footer-info .tags { display: flex; flex-wrap: wrap; gap: 8px; }
.article-footer-info .tags .tag { background: var(--bg); color: var(--text-light); font-weight: 500; }
.article-footer-info .share { display: flex; align-items: center; gap: 12px; }
.article-footer-info .share a { width: 40px; height: 40px; border-radius: 50%; background: var(--bg); display: flex; align-items: center; justify-content: center; color: var(--text-light); transition: all var(--transition); font-size: 1rem; }
.article-footer-info .share a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
/* 侧栏 */
.article-sidebar { display: flex; flex-direction: column; gap: 32px; }
.sidebar-card { background: var(--bg-white); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); border: 1px solid var(--border); }
.sidebar-card h3 { font-size: 1.1rem; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 2px solid var(--border-light); display: flex; align-items: center; gap: 8px; }
.sidebar-card h3 i { color: var(--primary); }
.sidebar-card ul li { margin-bottom: 10px; }
.sidebar-card ul li a { display: flex; align-items: center; gap: 10px; color: var(--text-light); font-size: 0.9rem; padding: 6px 0; transition: all var(--transition); }
.sidebar-card ul li a:hover { color: var(--primary); padding-left: 4px; }
.sidebar-card ul li a i { width: 18px; color: var(--primary-light); font-size: 0.8rem; }
.sidebar-card .cta-box { text-align: center; }
.sidebar-card .cta-box p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 16px; }
.sidebar-card .cta-box .btn { width: 100%; justify-content: center; }
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; gap: 32px; }
  .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
}
@media (max-width: 768px) {
  .article-content { padding: 24px; }
  .article-sidebar { grid-template-columns: 1fr; }
  .article-content .post-body { font-size: 1rem; }
  .article-footer-info { flex-direction: column; align-items: flex-start; }
}
/* ===== 相关推荐 ===== */
.related-section { background: var(--bg-white); padding: 80px 0; border-top: 1px solid var(--border); }
.related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 40px; }
.related-card { background: var(--bg); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); transition: all var(--transition); }
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--primary-light); }
.related-card .card-img { height: 180px; overflow: hidden; }
.related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.related-card:hover .card-img img { transform: scale(1.06); }
.related-card .card-body { padding: 20px; }
.related-card .card-body .card-cat { font-size: 0.75rem; color: var(--primary); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; }
.related-card .card-body h4 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card .card-body h4 a { color: var(--text); }
.related-card .card-body h4 a:hover { color: var(--primary); }
.related-card .card-body .card-date { font-size: 0.8rem; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }
@media (max-width: 992px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .related-grid { grid-template-columns: 1fr; }
}
/* ===== CTA ===== */
.cta-section { background: var(--bg-dark); background-image: url('/assets/images/backpic/back-1.png'); background-size: cover; background-position: center; background-attachment: fixed; position: relative; padding: 80px 0; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,23,36,0.88) 0%, rgba(15,23,36,0.65) 100%); }
.cta-section .container { position: relative; z-index: 2; text-align: center; }
.cta-section h2 { font-size: 2rem; color: #fff; margin-bottom: 16px; }
.cta-section p { font-size: 1.05rem; color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 32px; }
.cta-section .cta-btns { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta-section .cta-btns .btn { min-width: 160px; justify-content: center; }
@media (max-width: 520px) {
  .cta-section h2 { font-size: 1.5rem; }
  .cta-section .cta-btns .btn { min-width: 140px; }
}
/* ===== 页脚 ===== */
.footer { background: var(--secondary); color: rgba(255,255,255,0.7); padding: 64px 0 32px; }
.footer .container { max-width: var(--max-width); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand .logo .logo-icon { background: var(--primary); }
.footer-brand .logo span:last-child { color: #fff; }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 320px; }
.footer-col h4 { font-size: 1rem; color: #fff; margin-bottom: 16px; font-weight: 600; }
.footer-col a { display: block; color: rgba(255,255,255,0.6); font-size: 0.9rem; padding: 5px 0; transition: all var(--transition); }
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-col a i { width: 20px; margin-right: 6px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; text-align: center; font-size: 0.85rem; color: rgba(255,255,255,0.4); }
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--accent); }
@media (max-width: 992px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-brand p { max-width: 100%; }
}
/* ===== 内容未找到 ===== */
.not-found-wrap { text-align: center; padding: 80px 20px; }
.not-found-wrap .not-found-icon { font-size: 4rem; color: var(--text-muted); margin-bottom: 24px; }
.not-found-wrap h2 { font-size: 1.8rem; margin-bottom: 12px; }
.not-found-wrap p { color: var(--text-light); margin-bottom: 24px; }
.not-found-wrap .btn { margin: 0 auto; }
/* ===== 响应式微调 ===== */
@media (max-width: 768px) {
  .section { padding: 48px 0; }
  .section-title { font-size: 1.5rem; }
  .section-sub { font-size: 0.95rem; margin-bottom: 32px; }
  .container { padding: 0 16px; }
}
@media (max-width: 520px) {
  .section-title { font-size: 1.3rem; }
  .btn { padding: 10px 20px; font-size: 0.9rem; }
}