/* roulang page: index */
:root {
  --primary: #0d1f4a;
  --primary-dark: #081536;
  --primary-light: #14346e;
  --accent: #ff6b35;
  --accent-hover: #f45422;
  --accent-soft: #fff1eb;
  --bg: #f5f7fb;
  --bg-deep: #0a1530;
  --card: #ffffff;
  --text: #182036;
  --text-weak: #67728a;
  --text-invert: #ffffff;
  --border: #e5eaf2;
  --radius-xl: 22px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow: 0 6px 24px rgba(13, 31, 74, 0.07);
  --shadow-lg: 0 14px 40px rgba(13, 31, 74, 0.13);
  --max-width: 1200px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --transition: 0.25s ease;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-family); line-height: 1.7; background: var(--bg); color: var(--text); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color var(--transition), background var(--transition), box-shadow var(--transition), transform var(--transition); }
ul, ol { list-style: none; }
.container { width: min(var(--max-width), 92%); margin-inline: auto; }
.section { padding: 70px 0; }
.section-head { margin-bottom: 40px; }
.section-head.center { max-width: 680px; margin-inline: auto; text-align: center; }
.section-tag { display: inline-flex; align-items: center; gap: 6px; padding: 5px 16px; background: var(--accent-soft); color: var(--accent-hover); border-radius: 999px; font-size: 13px; font-weight: 700; letter-spacing: 0.5px; margin-bottom: 12px; }
.section-head h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 800; color: var(--primary); line-height: 1.3; letter-spacing: -0.02em; }
.section-head p { color: var(--text-weak); margin-top: 8px; font-size: 15px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 24px; border-radius: 999px; font-weight: 600; border: 2px solid transparent; cursor: pointer; white-space: nowrap; transition: all var(--transition); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 24px rgba(255,107,53,0.28); }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 12px 32px rgba(255,107,53,0.36); }
.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255,255,255,0.6); }
.btn-outline-light:hover { background: #fff; color: var(--primary); transform: translateY(-2px); }
.btn-lg { padding: 15px 32px; font-size: 15px; }
.btn-sm { padding: 8px 16px; font-size: 13px; }

.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.92); backdrop-filter: blur(18px); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 32px; }
.brand { font-size: 22px; font-weight: 800; letter-spacing: -0.02em; color: var(--primary); display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.brand i { color: var(--accent); font-size: 20px; }
.main-nav { display: flex; align-items: center; gap: 8px; }
.nav-link { position: relative; padding: 8px 18px; border-radius: 999px; font-size: 15px; font-weight: 500; color: var(--text); }
.nav-link:hover { background: rgba(13,31,74,0.06); color: var(--primary); }
.nav-link.active { background: var(--primary); color: #fff; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; width: 42px; height: 42px; background: var(--primary); color: #fff; border: none; border-radius: 12px; cursor: pointer; align-items: center; justify-content: center; font-size: 18px; }

.page-hero { position: relative; background: linear-gradient(115deg, rgba(5,14,42,0.92), rgba(12,28,66,0.72)), url('/assets/images/backpic/back-2.png') center/cover no-repeat; color: #fff; padding: 84px 0; text-align: center; }
.page-hero .hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; background: rgba(255,255,255,0.14); border: 1px solid rgba(255,255,255,0.28); border-radius: 999px; font-size: 13px; font-weight: 600; letter-spacing: 0.5px; margin-bottom: 18px; }
.page-hero h1 { font-size: clamp(2rem, 5vw, 3.4rem); font-weight: 900; letter-spacing: -0.02em; line-height: 1.2; }
.page-hero h1 span { background: linear-gradient(100deg, #ffb14f, #ff6b35); -webkit-background-clip: text; background-clip: text; color: transparent; }
.page-hero p { max-width: 580px; margin: 16px auto 0; color: rgba(255,255,255,0.82); font-size: 15px; line-height: 1.85; }

.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.guide-card { display: block; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); transition: transform var(--transition), box-shadow var(--transition); }
.guide-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.guide-card img { width: 100%; height: 190px; object-fit: cover; transition: transform 0.4s ease; }
.guide-card:hover img { transform: scale(1.05); }
.guide-card-body { padding: 24px; }
.guide-card-body h3 { font-size: 18px; font-weight: 700; color: var(--primary); }
.guide-card-body p { font-size: 14px; color: var(--text-weak); margin-top: 8px; line-height: 1.65; }
.guide-card-body .card-link { margin-top: 14px; display: inline-flex; align-items: center; gap: 6px; color: var(--accent); font-size: 13px; font-weight: 700; }
.guide-card:hover .card-link i { transform: translateX(4px); }
.guide-card .card-link i { transition: transform var(--transition); }

.feature-bg { background: var(--bg); }
.feature-list { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.feature-item { display: flex; gap: 16px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 22px; box-shadow: var(--shadow); }
.feature-item .icon { flex-shrink: 0; width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; background: var(--accent-soft); color: var(--accent-hover); border-radius: 12px; font-size: 18px; }
.feature-item h3 { font-size: 16px; font-weight: 700; color: var(--primary); }
.feature-item p { font-size: 14px; color: var(--text-weak); margin-top: 6px; line-height: 1.7; }

.tips-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.tip-card { background: var(--card); border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: var(--radius-md); padding: 22px 24px; box-shadow: var(--shadow); }
.tip-card h3 { font-size: 15px; font-weight: 700; color: var(--primary); display: flex; align-items: center; gap: 8px; }
.tip-card h3 i { color: var(--accent); }
.tip-card p { font-size: 14px; color: var(--text-weak); margin-top: 8px; line-height: 1.7; }

.faq-list { max-width: 880px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow); }
.faq-item details summary { list-style: none; cursor: pointer; padding: 20px 24px; font-weight: 600; color: var(--text); font-size: 15px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '\f078'; font-family: 'Font Awesome 6 Free'; font-weight: 900; font-size: 13px; color: var(--text-weak); transition: transform var(--transition); flex-shrink: 0; }
.faq-item details[open] summary::after { transform: rotate(180deg); }
.faq-item details[open] summary { border-bottom: 1px solid var(--border); }
.faq-a { padding: 0 24px 22px; color: var(--text-weak); font-size: 14px; line-height: 1.85; }

.cta-section { background: linear-gradient(115deg, rgba(5,14,42,0.94), rgba(10,24,58,0.78)), url('/assets/images/backpic/back-3.png') center/cover no-repeat; color: #fff; padding: 84px 0; text-align: center; }
.cta-section h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 800; }
.cta-section p { color: rgba(255,255,255,0.82); margin: 16px auto 30px; max-width: 520px; font-size: 15px; }
.cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

.site-footer { background: var(--bg-deep); color: rgba(255,255,255,0.72); padding-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 48px; padding-bottom: 44px; }
.footer-brand { font-size: 22px; font-weight: 800; color: #fff; display: flex; align-items: center; gap: 8px; }
.footer-brand i { color: var(--accent); }
.footer-desc { font-size: 14px; color: rgba(255,255,255,0.5); margin-top: 14px; line-height: 1.85; max-width: 360px; }
.footer-h { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: rgba(255,255,255,0.5); }
.footer-links a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-block: 20px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 13px; color: rgba(255,255,255,0.4); }

@media (max-width: 1024px) {
  .section { padding: 56px 0; }
  .guide-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .section { padding: 48px 0; }
  .brand { font-size: 19px; }
  .main-nav { position: fixed; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 20px; gap: 14px; box-shadow: var(--shadow-lg); border-bottom: 1px solid var(--border); transform: translateY(-145%); transition: transform 0.35s ease; z-index: 99; align-items: stretch; }
  .main-nav.open { transform: translateY(0); }
  .nav-link { text-align: center; padding: 12px; }
  .header-actions .btn-primary { display: none; }
  .nav-toggle { display: inline-flex; }
  .guide-grid { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: 1fr; }
  .tips-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .page-hero { padding: 60px 0; }
  .cta-buttons { flex-direction: column; }
  .cta-buttons .btn { width: 100%; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --primary: #e11d48;
  --primary-dark: #be123c;
  --primary-light: #fde8ef;
  --secondary: #0f172a;
  --secondary-light: #1e293b;
  --accent: #f59e0b;
  --bg: #f4f6fb;
  --card-bg: #ffffff;
  --text: #0f172a;
  --text-weak: #64748b;
  --text-soft: #94a3b8;
  --border: #e2e8f0;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-sm: 8px;
  --shadow: 0 4px 20px rgba(15, 23, 42, 0.07);
  --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.13);
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --space-section: 80px;
}

/* ===== Reset / Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol { list-style: none; }

button { cursor: pointer; border: none; background: none; font-family: inherit; }

input, textarea { font-family: inherit; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 14px; font-size: 14px; outline: none; transition: var(--transition); }

input:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(225, 29, 72, 0.12); }

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

/* ===== 容器 ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  transition: var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn i { font-size: 14px; }
.btn-sm { padding: 8px 20px; font-size: 14px; }
.btn-lg { padding: 16px 40px; font-size: 16px; }
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(225, 29, 72, 0.3);
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(225, 29, 72, 0.4); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(225, 29, 72, 0.3); }
.btn-outline {
  background: transparent;
  color: var(--secondary);
  border-color: var(--border);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); transform: translateY(-2px); }
.btn-accent {
  background: var(--accent);
  color: var(--secondary);
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
}
.btn-accent:hover { background: #d97706; color: #fff; transform: translateY(-2px); }
.btn:focus-visible { outline: 3px solid rgba(225, 29, 72, 0.4); outline-offset: 2px; }

/* ===== 徽章 / 标签 ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  background: var(--primary-light);
  color: var(--primary);
}
.badge-hot { background: #fee2e2; color: #dc2626; }
.badge-new { background: #dcfce7; color: #16a34a; }
.badge-top { background: #fef3c7; color: #b45309; }

.tag-item {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--border);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-weak);
  cursor: pointer;
  transition: var(--transition);
}
.tag-item:hover, .tag-item.active {
  background: var(--secondary);
  color: #fff;
  border-color: var(--secondary);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.2);
}

/* ===== Header / 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: var(--secondary);
  letter-spacing: -0.5px;
  flex-shrink: 0;
}
.brand i {
  color: var(--primary);
  font-size: 24px;
  background: var(--primary-light);
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.brand:hover { opacity: 0.85; }
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  justify-content: center;
}
.nav-link {
  padding: 10px 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-weak);
  transition: var(--transition);
  position: relative;
}
.nav-link:hover { color: var(--secondary); background: var(--bg); }
.nav-link.active {
  color: #fff;
  background: var(--secondary);
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.25);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--bg);
  color: var(--secondary);
  font-size: 18px;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.nav-toggle:hover { background: var(--primary-light); color: var(--primary); }

/* ===== Hero Banner ===== */
.page-hero {
  position: relative;
  padding: 100px 0 90px;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(30, 41, 59, 0.78)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  color: #fff;
  overflow: hidden;
}
.page-hero::after {
  content: '';
  position: absolute;
  bottom: -60px;
  right: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(225, 29, 72, 0.25);
  filter: blur(80px);
}
.page-hero .container { position: relative; z-index: 2; }
.hero-subtitle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 6px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
}
.page-hero h1 {
  font-size: 44px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -1px;
  margin-bottom: 16px;
  max-width: 640px;
}
.page-hero h1 span { color: #fda4af; }
.page-hero p.hero-desc {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 620px;
  line-height: 1.8;
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-meta {
  display: flex;
  gap: 30px;
  margin-top: 46px;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}
.hero-meta-item { display: flex; flex-direction: column; gap: 4px; }
.hero-meta-value { font-size: 26px; font-weight: 800; color: #fff; }
.hero-meta-label { font-size: 13px; color: rgba(255, 255, 255, 0.65); }

/* ===== 板块通用 ===== */
.section-block { padding: var(--space-section) 0; }
.section-block.alt { background: #fff; }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.section-head .sec-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.section-head h2 { font-size: 30px; font-weight: 800; letter-spacing: -0.5px; }
.section-head p { color: var(--text-weak); margin-top: 8px; max-width: 560px; }
.section-link { color: var(--primary); font-weight: 600; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.section-link:hover { gap: 10px; }

/* ===== 标签筛选 ===== */
.tag-filter { display: flex; flex-wrap: wrap; gap: 12px; }

/* ===== 卡片 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.card-item {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
}
.card-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(225, 29, 72, 0.25);
}
.card-cover {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.card-item:hover .card-cover img { transform: scale(1.06); }
.card-cover .badge { position: absolute; top: 14px; left: 14px; z-index: 2; box-shadow: 0 2px 10px rgba(0,0,0,0.12); }
.card-body { padding: 22px 22px 26px; display: flex; flex-direction: column; flex: 1; }
.card-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; line-height: 1.4; }
.card-body h3 a:hover { color: var(--primary); }
.card-body p { font-size: 14px; color: var(--text-weak); line-height: 1.7; margin-bottom: 16px; flex: 1; }
.card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-soft);
  padding-top: 14px;
  border-top: 1px solid var(--border);
}
.card-meta i { color: var(--primary); }

/* ===== 时间线 ===== */
.timeline { position: relative; max-width: 860px; margin: 0 auto; }
.timeline::before {
  content: '';
  position: absolute;
  left: 22px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), var(--accent));
  opacity: 0.25;
}
.timeline-item {
  position: relative;
  padding-left: 70px;
  margin-bottom: 28px;
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: 12px;
  top: 22px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary);
  border: 4px solid #fff;
  box-shadow: 0 0 0 2px var(--primary);
  z-index: 2;
}
.timeline-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 20px 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.timeline-card:hover { box-shadow: var(--shadow-lg); transform: translateX(4px); }
.timeline-card .tl-date {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}
.timeline-card h3 { font-size: 17px; margin-bottom: 6px; }
.timeline-card p { font-size: 14px; color: var(--text-weak); }
.timeline-card .tl-tags { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.tl-status {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 700;
  padding: 2px 12px;
  border-radius: 999px;
}
.tl-status.live { background: #fee2e2; color: #dc2626; }
.tl-status.done { background: #dcfce7; color: #16a34a; }
.tl-status.upcoming { background: #fef3c7; color: #b45309; }

/* ===== 攻略流程 ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step-item {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  position: relative;
  transition: var(--transition);
}
.step-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--secondary);
  color: #fff;
  font-size: 22px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  position: relative;
  z-index: 1;
}
.step-item:nth-child(2) .step-num { background: var(--primary); }
.step-item:nth-child(3) .step-num { background: var(--accent); color: var(--secondary); }
.step-item:nth-child(4) .step-num { background: #10b981; }
.step-item h3 { font-size: 17px; margin-bottom: 10px; }
.step-item p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }

/* ===== 排行列表 ===== */
.rank-list { display: flex; flex-direction: column; gap: 14px; }
.rank-item {
  display: flex;
  align-items: center;
  gap: 18px;
  background: #fff;
  border-radius: var(--radius);
  padding: 18px 22px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.rank-item:hover { box-shadow: var(--shadow-lg); transform: translateX(6px); border-color: rgba(225, 29, 72, 0.2); }
.rank-no {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--bg);
  color: var(--text-weak);
  font-size: 16px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.rank-item:nth-child(1) .rank-no,
.rank-item:nth-child(2) .rank-no,
.rank-item:nth-child(3) .rank-no {
  background: linear-gradient(135deg, var(--accent), #fbbf24);
  color: #fff;
}
.rank-info { flex: 1; min-width: 0; }
.rank-info h3 { font-size: 16px; margin-bottom: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rank-info span { font-size: 13px; color: var(--text-soft); }
.rank-heat {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
}
.rank-heat i { color: var(--accent); }

/* ===== 攻略 ===== */
.guide-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.guide-item {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px 26px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  display: flex;
  gap: 18px;
  transition: var(--transition);
}
.guide-item:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.guide-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.guide-item h3 { font-size: 16px; margin-bottom: 6px; }
.guide-item p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(225, 29, 72, 0.25); }
.faq-question {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--secondary);
  cursor: pointer;
}
.faq-question i {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: var(--transition);
}
.faq-item.active .faq-question i { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer p { padding: 0 24px 22px 72px; font-size: 15px; color: var(--text-weak); line-height: 1.8; }

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #250b0f 100%);
  border-radius: var(--radius-lg);
  padding: 60px 56px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgba(225, 29, 72, 0.35);
  filter: blur(60px);
}
.cta-section::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: 30%;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.15);
  filter: blur(60px);
}
.cta-content { position: relative; z-index: 2; max-width: 640px; }
.cta-content h2 { color: #fff; font-size: 30px; margin-bottom: 14px; letter-spacing: -0.5px; }
.cta-content p { color: rgba(255, 255, 255, 0.8); font-size: 16px; line-height: 1.8; margin-bottom: 28px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--secondary);
  color: rgba(255, 255, 255, 0.7);
  padding: 56px 0 28px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 36px;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
}
.footer-brand i { color: var(--primary); font-size: 22px; }
.footer-desc { margin-top: 14px; font-size: 14px; line-height: 1.8; color: rgba(255, 255, 255, 0.6); max-width: 360px; }
.footer-h {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: rgba(255, 255, 255, 0.6); }
.footer-links a:hover { color: #fff; transform: translateX(4px); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  :root { --space-section: 60px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .page-hero h1 { font-size: 36px; }
}

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px 24px;
    gap: 6px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.08);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    z-index: 999;
    align-items: stretch;
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .main-nav .nav-link { text-align: center; padding: 14px 20px; }
  .main-nav .nav-link.active { border-radius: 10px; }
  .nav-toggle { display: flex; }
  .header-actions .btn-primary { display: none; }
  .page-hero { padding: 70px 0 60px; }
  .page-hero h1 { font-size: 30px; }
  .hero-meta { gap: 16px; flex-wrap: wrap; }
  .hero-meta-value { font-size: 20px; }
  .card-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .guide-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .section-head h2 { font-size: 24px; }
  .cta-section { padding: 40px 24px; }
  .cta-content h2 { font-size: 24px; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }
  .timeline-item { padding-left: 54px; }
  .faq-answer p { padding-left: 56px; }
  .rank-item { flex-wrap: wrap; gap: 12px; }
  .rank-info { flex: 1 1 100%; order: 3; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .brand { font-size: 18px; }
  .brand i { width: 32px; height: 32px; font-size: 18px; }
  .page-hero h1 { font-size: 26px; }
  .page-hero p.hero-desc { font-size: 15px; }
  .hero-actions .btn { flex: 1; }
  .section-block { padding: 48px 0; }
  .section-head h2 { font-size: 22px; }
  .card-grid { gap: 18px; }
  .timeline::before { left: 16px; }
  .timeline-item { padding-left: 46px; }
  .timeline-dot { left: 8px; width: 18px; height: 18px; }
  .timeline-card { padding: 16px 18px; }
  .rank-item { padding: 14px 16px; }
  .guide-item { flex-direction: column; align-items: flex-start; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* 响应式导航下拉 — 点击空白处关闭 */

/* roulang page: article */
:root {
            --primary: #f97316;
            --primary-hover: #ea580c;
            --primary-soft: rgba(249, 115, 22, 0.12);
            --dark: #1e293b;
            --bg: #f8fafc;
            --white: #ffffff;
            --text: #0f172a;
            --text-light: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 6px 24px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 12px 36px rgba(15, 23, 42, 0.12);
            --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --container: 1240px;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a { text-decoration: none; color: inherit; }
        img { max-width: 100%; display: block; }
        ul, ol { list-style: none; }
        button { font-family: inherit; cursor: pointer; border: none; background: none; }
        input, textarea, select { font-family: inherit; }

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

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 12px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: 0.5px;
        }
        .brand i { color: var(--primary); font-size: 20px; }
        .main-nav { display: flex; align-items: center; gap: 30px; }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            padding: 8px 2px;
            position: relative;
            transition: var(--transition);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-link:hover, .nav-link.active { color: var(--text); }
        .nav-link:hover::after, .nav-link.active::after { width: 100%; }
        .header-actions { display: flex; align-items: center; gap: 14px; }
        .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-weight: 600; border-radius: var(--radius-sm); transition: var(--transition); border: 2px solid transparent; }
        .btn-primary { background: var(--primary); color: #fff; padding: 10px 22px; }
        .btn-primary:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(249, 115, 22, 0.3); }
        .btn-outline { border-color: var(--border); color: var(--text); padding: 10px 22px; background: var(--white); }
        .btn-outline:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
        .btn-sm { padding: 8px 16px; font-size: 14px; border-radius: 8px; }
        .nav-toggle { display: none; font-size: 22px; color: var(--dark); padding: 6px; }

        /* ===== 文章 Hero ===== */
        .article-hero {
            position: relative;
            padding: 76px 0 80px;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(30, 41, 59, 0.78), rgba(249, 115, 22, 0.4)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 50px;
            background: linear-gradient(to top, var(--bg), transparent);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 26px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .breadcrumb a { color: rgba(255, 255, 255, 0.7); transition: color 0.2s; }
        .breadcrumb a:hover { color: #fff; }
        .breadcrumb .sep { color: rgba(255, 255, 255, 0.4); }
        .article-hero-title {
            font-size: 38px;
            line-height: 1.35;
            font-weight: 800;
            letter-spacing: 0.5px;
            max-width: 880px;
            margin-bottom: 22px;
            position: relative;
            z-index: 1;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 22px;
            flex-wrap: wrap;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            position: relative;
            z-index: 1;
        }
        .article-meta span { display: inline-flex; align-items: center; gap: 7px; }
        .article-meta i { color: var(--primary); font-size: 14px; }
        .article-meta .meta-tag {
            background: rgba(249, 115, 22, 0.2);
            border: 1px solid rgba(249, 115, 22, 0.4);
            padding: 3px 14px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 13px;
            color: #fff;
        }

        /* ===== 文章主体 ===== */
        .article-section { padding: 0 0 64px; }
        .article-wrap {
            background: var(--white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 52px;
            margin-top: -36px;
            position: relative;
            z-index: 2;
        }
        .article-cover { border-radius: var(--radius-sm); overflow: hidden; margin-bottom: 36px; }
        .article-cover img { width: 100%; height: 420px; object-fit: cover; }
        .article-content { font-size: 16px; line-height: 1.9; color: #334155; }
        .article-content p { margin-bottom: 18px; }
        .article-content h2 { font-size: 24px; font-weight: 700; color: var(--text); margin: 32px 0 14px; border-left: 4px solid var(--primary); padding-left: 14px; }
        .article-content h3 { font-size: 19px; font-weight: 700; color: var(--text); margin: 26px 0 10px; }
        .article-content h4 { font-size: 17px; font-weight: 600; color: var(--text); margin: 20px 0 8px; }
        .article-content img { border-radius: 12px; margin: 22px 0; max-width: 100%; height: auto; }
        .article-content ul, .article-content ol { margin: 18px 0; padding-left: 22px; }
        .article-content ul { list-style: disc; }
        .article-content ol { list-style: decimal; }
        .article-content li { margin-bottom: 8px; }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-soft);
            padding: 16px 22px;
            border-radius: 0 10px 10px 0;
            margin: 24px 0;
            color: #475569;
            font-style: italic;
        }
        .article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
        .article-content table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 15px; }
        .article-content th, .article-content td { border: 1px solid var(--border); padding: 10px 14px; text-align: left; }
        .article-content th { background: var(--bg); font-weight: 600; }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 38px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
        }
        .tag {
            background: var(--bg);
            color: var(--text-light);
            border-radius: 20px;
            padding: 6px 16px;
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .tag:hover { background: var(--primary-soft); color: var(--primary); }

        /* 空状态 */
        .not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found i { font-size: 56px; color: #cbd5e1; margin-bottom: 20px; }
        .not-found h2 { font-size: 26px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
        .not-found p { color: var(--text-light); margin-bottom: 24px; font-size: 15px; }
        .not-found .btn { margin: 0 auto; }

        /* ===== 相关推荐 ===== */
        .related-section { padding: 72px 0 80px; background: var(--bg); }
        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 36px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .section-head h2 {
            font-size: 28px;
            font-weight: 800;
            position: relative;
            padding-left: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .section-head h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: var(--primary);
            border-radius: 4px;
        }
        .section-more {
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .section-more:hover { gap: 12px; }
        .related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .related-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--primary-soft); }
        .related-card-img { height: 180px; overflow: hidden; position: relative; }
        .related-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
        .related-card:hover .related-card-img img { transform: scale(1.05); }
        .related-card-img::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(15, 23, 42, 0.35), transparent); }
        .related-card-img .cat-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 20px;
            font-weight: 600;
        }
        .related-card-body { padding: 18px 20px 20px; }
        .related-card-body h3 { font-size: 16px; font-weight: 700; line-height: 1.5; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; transition: color 0.2s; }
        .related-card:hover .related-card-body h3 { color: var(--primary); }
        .related-card-body p { font-size: 13px; color: var(--text-light); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .card-time { margin-top: 14px; font-size: 12px; color: var(--text-light); display: flex; align-items: center; gap: 6px; }

        /* ===== FAQ ===== */
        .faq-section { padding: 72px 0; background: var(--white); border-top: 1px solid var(--border); }
        .faq-section .section-head { justify-content: center; }
        .faq-section .section-head h2 { padding-left: 18px; }
        .faq-grid { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
        .faq-item { background: var(--bg); border-radius: var(--radius-sm); padding: 22px 26px; border: 1px solid var(--border); transition: var(--transition); }
        .faq-item.active { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); background: var(--white); }
        .faq-q { display: flex; align-items: center; justify-content: space-between; gap: 16px; font-weight: 600; font-size: 15px; cursor: pointer; color: var(--text); }
        .faq-q i { transition: transform 0.35s ease; color: var(--primary); flex-shrink: 0; }
        .faq-item.active .faq-q i { transform: rotate(180deg); }
        .faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; font-size: 14px; color: var(--text-light); line-height: 1.7; }
        .faq-item.active .faq-a { max-height: 200px; padding-top: 12px; }

        /* ===== CTA ===== */
        .cta-section { padding: 72px 0 80px; }
        .cta-card {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            border-radius: 20px;
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-card::before { content: ''; position: absolute; top: -80px; right: -80px; width: 260px; height: 260px; background: radial-gradient(circle, rgba(249, 115, 22, 0.35), transparent); border-radius: 50%; }
        .cta-card::after { content: ''; position: absolute; bottom: -60px; left: -40px; width: 190px; height: 190px; background: radial-gradient(circle, rgba(249, 115, 22, 0.25), transparent); border-radius: 50%; }
        .cta-card h2 { font-size: 32px; color: #fff; margin-bottom: 12px; position: relative; z-index: 1; font-weight: 800; }
        .cta-card p { color: rgba(255, 255, 255, 0.7); font-size: 16px; margin-bottom: 32px; position: relative; z-index: 1; max-width: 540px; margin-left: auto; margin-right: auto; }
        .cta-card .btn { position: relative; z-index: 1; }

        /* ===== 页脚 ===== */
        .site-footer { background: var(--dark); color: rgba(255, 255, 255, 0.7); padding: 56px 0 0; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 44px; }
        .footer-brand { display: inline-flex; align-items: center; gap: 8px; color: #fff; font-size: 20px; font-weight: 800; margin-bottom: 16px; }
        .footer-brand i { color: var(--primary); }
        .footer-desc { font-size: 14px; line-height: 1.7; max-width: 360px; color: rgba(255, 255, 255, 0.55); }
        .footer-h { font-size: 16px; color: #fff; font-weight: 700; margin-bottom: 16px; }
        .footer-links { display: flex; flex-direction: column; gap: 10px; }
        .footer-links a { font-size: 14px; color: rgba(255, 255, 255, 0.6); transition: var(--transition); }
        .footer-links a:hover { color: var(--primary); transform: translateX(4px); }
        .footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 22px 0; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; color: rgba(255, 255, 255, 0.4); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .article-wrap { padding: 36px; }
            .article-cover img { height: 320px; }
        }
        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                gap: 0;
                padding: 12px 24px;
                transform: translateY(-120%);
                transition: transform 0.35s ease;
                box-shadow: 0 16px 32px rgba(0, 0, 0, 0.08);
                border-bottom: 1px solid var(--border);
                display: flex;
            }
            .main-nav.open { transform: translateY(0); }
            .main-nav .nav-link { display: block; padding: 14px 0; width: 100%; font-size: 16px; }
            .nav-toggle { display: block; }
            .article-hero { padding: 52px 0 64px; }
            .article-hero-title { font-size: 28px; }
            .article-wrap { padding: 24px; margin-top: -28px; }
            .article-cover img { height: 240px; }
            .related-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .cta-card { padding: 40px 24px; }
            .cta-card h2 { font-size: 26px; }
            .faq-item { padding: 18px 20px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .related-grid { grid-template-columns: 1fr; }
            .article-meta { gap: 12px; font-size: 13px; }
            .article-hero-title { font-size: 24px; }
            .article-wrap { padding: 18px; border-radius: 12px; }
            .article-cover img { height: 200px; }
            .section-head h2 { font-size: 23px; }
            .cta-card { padding: 32px 20px; }
            .cta-card h2 { font-size: 23px; }
            .faq-grid { gap: 12px; }
            .btn-primary.btn-sm { padding: 8px 14px; font-size: 13px; }
        }