/* roulang page: index */
:root {
  --primary: #151b3a;
  --primary-light: #1f2a5e;
  --primary-soft: #eef0fa;
  --accent: #f5a623;
  --accent-dark: #d98e0e;
  --accent-soft: #fef3dd;
  --bg: #f7f9fc;
  --white: #ffffff;
  --text: #232838;
  --text-light: #6b7287;
  --text-lighter: #9aa3b5;
  --border: #e7ebf2;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 12px rgba(21, 27, 58, 0.06);
  --shadow-md: 0 8px 30px rgba(21, 27, 58, 0.08);
  --shadow-lg: 0 20px 50px rgba(21, 27, 58, 0.12);
  --transition: all .25s ease;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

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

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
a:hover, a:focus { color: var(--primary-light); }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 3px solid rgba(245, 166, 35, 0.5);
  outline-offset: 2px;
  border-radius: 4px;
}
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }

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

.section { padding: 90px 0; }
.section-alt { background: var(--white); }

.sec-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}
.sec-head h2 {
  font-size: 34px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.35;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}
.sec-head p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.75;
}
.sec-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 18px;
  letter-spacing: 0.3px;
}

/* ===== Header / Nav ===== */
.site-header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(21, 27, 58, 0.06);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(231, 235, 242, 0.8);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: baseline;
  gap: 2px;
  font-size: 0;
  white-space: nowrap;
  flex-shrink: 0;
}
.logo .logo-mark {
  font-size: 23px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
}
.logo .logo-text {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  margin-left: 4px;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
}
.site-nav a {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-light);
  transition: var(--transition);
  white-space: nowrap;
}
.site-nav a:hover {
  color: var(--primary);
  background: var(--primary-soft);
}
.site-nav a.active {
  color: var(--primary);
  background: var(--primary-soft);
  font-weight: 600;
}
.nav-cta {
  padding: 11px 24px !important;
  border-radius: 100px;
  font-weight: 600 !important;
  font-size: 14px !important;
  color: #fff !important;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  box-shadow: 0 6px 18px rgba(21, 27, 58, 0.22);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.nav-cta i { font-size: 13px; }
.nav-cta:hover {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(21, 27, 58, 0.3);
  color: #fff;
}
.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 18px;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
}
.menu-toggle:hover { background: var(--accent-soft); color: var(--accent-dark); }

/* ===== Hero ===== */
.hero {
  position: relative;
  background-image: linear-gradient(125deg, rgba(21, 27, 58, 0.95) 0%, rgba(31, 42, 94, 0.88) 50%, rgba(21, 27, 58, 0.94) 100%), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  color: #fff;
  padding: 90px 0 70px;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(245, 166, 35, 0.18) 0%, transparent 70%);
  pointer-events: none;
  border-radius: 50%;
}
.hero-grid {
  display: flex;
  align-items: center;
  gap: 60px;
}
.hero-content {
  flex: 1.2;
  position: relative;
  z-index: 2;
}
.hero-panel {
  flex: 1;
  position: relative;
  z-index: 2;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245, 166, 35, 0.18);
  border: 1px solid rgba(245, 166, 35, 0.4);
  color: #ffd28a;
  font-size: 13px;
  font-weight: 600;
  padding: 7px 18px;
  border-radius: 100px;
  margin-bottom: 22px;
  letter-spacing: 0.6px;
}
.hero-badge i { font-size: 12px; }
.hero h1 {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.8px;
  margin-bottom: 18px;
  color: #fff;
}
.hero h1 span { color: var(--accent); }
.hero-desc {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: 30px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}
.hero-stats {
  display: flex;
  gap: 40px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}
.hero-stats div { text-align: left; }
.hero-stats strong {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}
.hero-stats span {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
}

/* Live panel */
.live-panel {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
}
.live-panel .panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.live-panel .panel-head h3 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}
.live-panel .panel-head h3 i { color: var(--accent); }
.live-panel .panel-head .live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 0 4px rgba(74, 222, 128, 0.25);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(74, 222, 128, 0.25); }
  50% { box-shadow: 0 0 0 8px rgba(74, 222, 128, 0.08); }
}
.live-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.live-item:last-of-type { border-bottom: none; }
.live-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #ff8a5c);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.live-item .live-content p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.5;
  margin-bottom: 4px;
}
.live-item .live-content span {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
}
.live-tag {
  display: inline-block;
  background: rgba(245, 166, 35, 0.16);
  color: #ffd28a;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 100px;
  margin-top: 6px;
}

/* ===== Notice Bar ===== */
.notice-bar {
  background: var(--accent-soft);
  border-bottom: 1px solid rgba(245, 166, 35, 0.2);
  padding: 13px 0;
}
.notice-bar .container {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.notice-bar i {
  color: var(--accent-dark);
  font-size: 16px;
}
.notice-bar p {
  font-size: 14px;
  color: #7a5b1e;
  font-weight: 500;
}
.notice-bar .tag-important {
  background: var(--accent-dark);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 100px;
}

/* ===== Feature Cards ===== */
.feature-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  height: 100%;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(245, 166, 35, 0.3);
}
.feature-card .feature-icon {
  width: 62px;
  height: 62px;
  border-radius: 18px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: var(--transition);
}
.feature-card:nth-child(2) .feature-icon {
  background: var(--accent-soft);
  color: var(--accent-dark);
}
.feature-card:nth-child(3) .feature-icon {
  background: #e7f8f0;
  color: #16a085;
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 0;
}
.feature-card:hover .feature-icon {
  transform: scale(1.08) rotate(-4deg);
}

/* ===== Showcase / Image section ===== */
.showcase-section .container { display: flex; align-items: center; gap: 60px; }
.showcase-img {
  flex: 1;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.showcase-img img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  transition: transform .5s ease;
}
.showcase-img:hover img { transform: scale(1.03); }
.showcase-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(21,27,58,0.3), transparent 50%);
  pointer-events: none;
}
.showcase-content { flex: 1; }
.showcase-content h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.35;
  margin-bottom: 16px;
}
.showcase-content p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 20px;
}
.check-list .check-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
}
.check-list .check-item i {
  color: var(--accent-dark);
  margin-top: 4px;
  font-size: 15px;
}

/* ===== Category Cards ===== */
.cat-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.cat-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.cat-card .cat-img {
  position: relative;
  height: 190px;
  overflow: hidden;
}
.cat-card .cat-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s ease;
}
.cat-card:hover .cat-img img { transform: scale(1.06); }
.cat-card .cat-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(21,27,58,0.15), rgba(21,27,58,0.55));
  pointer-events: none;
}
.cat-card .cat-btn {
  position: absolute;
  bottom: 14px;
  left: 20px;
  z-index: 2;
  background: rgba(255,255,255,0.18);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 100px;
}
.cat-card .cat-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.cat-card .cat-body h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.cat-card .cat-body p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
}
.cat-card .cat-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-dark);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.cat-card .cat-link i { font-size: 12px; }
.cat-card .cat-link:hover { gap: 10px; }

/* ===== News / Info List ===== */
.news-section { background: var(--white); }
.news-wrap {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.news-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px 26px;
  border-left: 4px solid var(--accent);
  transition: var(--transition);
}
.news-item:hover {
  background: #fff;
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.news-item .news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.news-item .news-cat {
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 100px;
}
.news-item .news-cat.variant-2 { background: var(--accent-soft); color: var(--accent-dark); }
.news-item .news-cat.variant-3 { background: #e7f8f0; color: #16a085; }
.news-item .news-date {
  font-size: 13px;
  color: var(--text-lighter);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.news-item h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 8px;
}
.news-item h3 a { color: var(--primary); }
.news-item h3 a:hover { color: var(--accent-dark); }
.news-item p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.65;
  margin-bottom: 0;
}
.news-empty {
  text-align: center;
  color: var(--text-light);
  background: var(--bg);
  padding: 50px 20px;
  border-radius: var(--radius-md);
  font-size: 15px;
  grid-column: 1 / -1;
}

/* ===== Steps ===== */
.steps-grid {
  display: flex;
  gap: 24px;
  counter-reset: step;
}
.step-card {
  flex: 1;
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 32px 24px;
  position: relative;
  text-align: center;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.step-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  box-shadow: 0 8px 20px rgba(21, 27, 58, 0.25);
}
.step-card:nth-child(2) .step-num { background: linear-gradient(135deg, var(--accent), #ff8a5c); box-shadow: 0 8px 20px rgba(245, 166, 35, 0.3); }
.step-card:nth-child(3) .step-num { background: linear-gradient(135deg, #16a085, #1abc9c); box-shadow: 0 8px 20px rgba(22, 160, 133, 0.3); }
.step-card:nth-child(4) .step-num { background: linear-gradient(135deg, #6c5ce7, #a29bfe); box-shadow: 0 8px 20px rgba(108, 92, 231, 0.3); }
.step-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.step-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.65;
  margin-bottom: 0;
}

/* ===== Hot Topics / Ranking ===== */
.hot-section { background: var(--primary); background-image: linear-gradient(125deg, rgba(21,27,58,0.96), rgba(31,42,94,0.9)), url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; color: #fff; }
.hot-section .sec-head h2 { color: #fff; }
.hot-section .sec-head p { color: rgba(255,255,255,0.6); }
.hot-section .sec-tag { background: rgba(255,255,255,0.12); color: var(--accent); }
.hot-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.hot-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 26px;
  backdrop-filter: blur(8px);
  transition: var(--transition);
}
.hot-card:hover { background: rgba(255,255,255,0.1); transform: translateY(-4px); }
.hot-card .hot-rank {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.hot-card .rank-num {
  font-size: 30px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}
.hot-card .rank-tag {
  background: rgba(255,255,255,0.14);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
}
.hot-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
  line-height: 1.4;
}
.hot-card p {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
  margin-bottom: 14px;
}
.hot-card .hot-footer {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  color: rgba(255,255,255,0.5);
}
.hot-card .hot-footer i { margin-right: 4px; }

/* ===== FAQ ===== */
.faq-wrap { max-width: 850px; margin: 0 auto; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(245, 166, 35, 0.3); box-shadow: var(--shadow-sm); }
.faq-item.open { box-shadow: var(--shadow-sm); border-color: rgba(245, 166, 35, 0.4); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  user-select: none;
  transition: var(--transition);
}
.faq-q:hover { color: var(--accent-dark); }
.faq-q .faq-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
  transition: var(--transition);
}
.faq-item.open .faq-icon {
  background: var(--accent);
  color: #fff;
  transform: rotate(45deg);
}
.faq-a {
  padding: 0 24px 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-a-inner {
  padding-bottom: 20px;
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.8;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

/* ===== CTA ===== */
.cta-section {
  background-image: linear-gradient(120deg, rgba(245, 166, 35, 0.94) 0%, rgba(255, 138, 92, 0.88) 100%), url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  padding: 70px 0;
  text-align: center;
  color: #fff;
}
.cta-section h2 {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.cta-section p {
  font-size: 16px;
  color: rgba(255,255,255,0.9);
  max-width: 620px;
  margin: 0 auto 28px;
  line-height: 1.75;
}
.btn-light {
  background: #fff !important;
  color: var(--accent-dark) !important;
  box-shadow: 0 10px 30px rgba(0,0,0,0.15) !important;
}
.btn-light:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(0,0,0,0.22) !important;
  color: var(--accent-dark) !important;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 28px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  transition: var(--transition);
  white-space: nowrap;
  border: none;
  text-align: center;
}
.btn-lg { padding: 15px 36px; font-size: 16px; }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #ff8a5c);
  color: #fff;
  box-shadow: 0 8px 24px rgba(245, 166, 35, 0.35);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-dark), #f08040);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(245, 166, 35, 0.45);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.6);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.12);
  border-color: #fff;
  color: #fff;
  transform: translateY(-3px);
}
.btn-dark {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 24px rgba(21, 27, 58, 0.25);
}
.btn-dark:hover {
  background: var(--primary-light);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(21, 27, 58, 0.35);
}

/* ===== Footer ===== */
.site-footer {
  background: #0f1330;
  color: #a0a5c0;
  padding: 60px 0 0;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand { max-width: 360px; }
.footer-brand .footer-logo {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.footer-brand .footer-logo .f-accent { color: var(--accent); font-size: 15px; font-weight: 600; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: #7a80a0;
  margin-bottom: 20px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  font-size: 14px;
  color: #a0a5c0;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
.footer-col ul li a i { font-size: 11px; }
.footer-bottom {
  text-align: center;
  padding: 24px 0;
  font-size: 13px;
  color: #5a6080;
}
.footer-bottom .domain-name { color: #7a80a0; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .site-header .container { flex-wrap: wrap; }
  .site-nav { gap: 2px; }
  .site-nav a { padding: 8px 12px; font-size: 14px; }
  .hero { padding: 60px 0 50px; }
  .hero-grid { gap: 30px; }
  .hero h1 { font-size: 38px; }
  .hero-panel { display: none; }
  .hero-content { flex: 1; }
  .steps-grid { gap: 16px; flex-wrap: wrap; }
  .step-card { flex: 1 1 45%; min-width: 220px; }
  .hot-grid { grid-template-columns: repeat(2, 1fr); }
  .showcase-section .container { flex-direction: column; gap: 36px; }
  .showcase-content { flex: 1; }
  .showcase-img img { height: 300px; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .sec-head h2 { font-size: 27px; }
  .site-header .container { height: 64px; }
  .menu-toggle { display: inline-flex; }
  .site-nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 16px 24px 24px;
    box-shadow: 0 20px 40px rgba(21,27,58,0.12);
    display: none;
    border-bottom: 1px solid var(--border);
  }
  .site-nav.open { display: flex; }
  .site-nav a {
    padding: 13px 16px;
    border-radius: 12px;
    font-size: 15px;
    border-bottom: 1px solid #f5f6fa;
  }
  .site-nav a:last-of-type { border-bottom: none; }
  .nav-cta { margin-top: 10px; justify-content: center; }
  .logo .logo-mark { font-size: 19px; }
  .logo .logo-text { font-size: 13px; }
  .hero h1 { font-size: 30px; }
  .hero-desc { font-size: 15px; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-stats strong { font-size: 22px; }
  .hero-actions .btn { width: 100%; }
  .steps-grid { flex-direction: column; }
  .step-card { flex: 1; min-width: auto; }
  .hot-grid { grid-template-columns: 1fr; }
  .news-wrap { grid-template-columns: 1fr; }
  .footer-grid { flex-direction: column; gap: 32px; }
  .cta-section h2 { font-size: 26px; }
  .cta-section p { font-size: 14px; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero { padding: 44px 0 40px; }
  .hero-badge { font-size: 12px; padding: 6px 14px; }
  .sec-head { margin-bottom: 34px; }
  .sec-head h2 { font-size: 24px; }
  .sec-head p { font-size: 14px; }
  .feature-card { padding: 26px 20px; }
  .feature-card .feature-icon { width: 52px; height: 52px; font-size: 20px; }
  .news-item { padding: 18px 16px; }
  .faq-q { padding: 16px 18px; font-size: 15px; }
  .btn-lg { padding: 13px 24px; font-size: 15px; }
  .cta-section { padding: 50px 0; }
  .hero-stats div { flex: 1; }
}

/* roulang page: category1 */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-deep: #172f6e;
            --primary-soft: #e8f0fe;
            --accent: #f59e0b;
            --accent-soft: #fef3c7;
            --bg: #f4f7fb;
            --bg-soft: #e9eef6;
            --surface: #ffffff;
            --text: #0f172a;
            --text-weak: #5b6b85;
            --border: #dfe6f0;
            --radius: 18px;
            --radius-sm: 12px;
            --radius-xs: 8px;
            --shadow: 0 12px 32px rgba(15, 37, 78, 0.10);
            --shadow-sm: 0 4px 14px rgba(15, 37, 78, 0.06);
            --transition: all 0.3s ease;
            --header-h: 72px;
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            height: auto;
            display: inline-block;
            vertical-align: middle;
        }

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

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

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0 0 0.5em;
            line-height: 1.3;
            color: var(--text);
            font-weight: 700;
        }

        p {
            margin: 0 0 1em;
        }

        .skip-link {
            position: absolute;
            left: -9999px;
            top: 0;
            background: var(--primary);
            color: #fff;
            padding: 10px 18px;
            border-radius: 0 0 var(--radius-xs) 0;
            z-index: 9999;
            font-size: 14px;
        }

        .skip-link:focus {
            left: 0;
            color: #fff;
        }

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.85);
            -webkit-backdrop-filter: blur(14px);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(223, 230, 240, 0.7);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 6px 24px rgba(15, 37, 78, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: var(--header-h);
            gap: 20px;
            flex-wrap: wrap;
        }

        .site-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--text);
            display: inline-flex;
            align-items: center;
            gap: 2px;
            flex-shrink: 0;
            line-height: 1.2;
        }

        .site-logo span {
            color: var(--primary);
            font-weight: 700;
            font-size: 1.15rem;
        }

        .site-logo:hover {
            color: var(--text);
            opacity: 0.88;
        }

        .site-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }

        .site-nav a {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            background: transparent;
            border: 1px solid transparent;
            transition: var(--transition);
            white-space: nowrap;
        }

        .site-nav a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .site-nav a.active {
            color: var(--primary);
            background: var(--primary-soft);
            border-color: rgba(37, 99, 235, 0.18);
        }

        .site-nav a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 10px 22px;
            border-radius: 50px;
            box-shadow: 0 6px 16px rgba(37, 99, 235, 0.25);
            font-weight: 700;
            margin-left: 10px;
        }

        .site-nav a.nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 22px rgba(37, 99, 235, 0.35);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            width: 44px;
            height: 44px;
            font-size: 1.2rem;
            color: var(--text);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

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

        .page-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 100px 0 90px;
            color: #fff;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 20, 45, 0.78) 0%, rgba(15, 35, 80, 0.65) 55%, rgba(37, 99, 235, 0.42) 100%);
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 0;
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb .sep {
            opacity: 0.6;
        }

        .breadcrumb .current {
            color: #ffffff;
            font-weight: 600;
        }

        .page-hero h1 {
            font-size: clamp(2rem, 4vw, 3.2rem);
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
            max-width: 780px;
            line-height: 1.25;
        }

        .page-hero .hero-desc {
            font-size: 1.12rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            max-width: 680px;
            margin-bottom: 34px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 13px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 700;
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 20px rgba(37, 99, 235, 0.25);
        }

        .btn:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(37, 99, 235, 0.35);
        }

        .btn:focus-visible {
            outline: 3px solid rgba(37, 99, 235, 0.4);
            outline-offset: 2px;
        }

        .btn-outline-light {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.55);
            color: #fff;
            box-shadow: none;
            -webkit-backdrop-filter: blur(6px);
            backdrop-filter: blur(6px);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.22);
            border-color: #fff;
            color: #fff;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }

        .btn-light {
            background: #fff;
            color: var(--primary-dark);
            box-shadow: 0 8px 24px rgba(255, 255, 255, 0.25);
        }

        .btn-light:hover {
            background: #f0f4ff;
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(255, 255, 255, 0.35);
        }

        .section-block {
            padding: 80px 0;
        }

        .section-block.bg-soft {
            background: var(--surface);
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 52px;
        }

        .section-head .section-tag {
            display: inline-block;
            background: var(--primary-soft);
            color: var(--primary);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-head p {
            color: var(--text-weak);
            font-size: 1.05rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* 简洁浅色分隔线 */
        .divider-line {
            width: 64px;
            height: 4px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            margin: 12px auto 0;
        }

        /* ===== 入口概览 ===== */
        .overview-section {
            padding: 80px 0 30px;
        }

        .overview-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .overview-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 34px 28px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            text-align: center;
        }

        .overview-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
            border-color: rgba(37, 99, 235, 0.25);
        }

        .overview-card .icon-box {
            width: 58px;
            height: 58px;
            border-radius: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            background: var(--primary-soft);
            color: var(--primary);
        }

        .overview-card .number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -1px;
            line-height: 1.2;
        }

        .overview-card .number small {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-weak);
            margin-left: 2px;
        }

        .overview-card .label {
            color: var(--text-weak);
            font-size: 0.95rem;
            margin-top: 6px;
        }

        /* ===== 登录方式卡片 ===== */
        .methods-section {
            padding: 70px 0 80px;
        }

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

        .method-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(37, 99, 235, 0.2);
        }

        .method-card .card-cover {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }

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

        .method-card:hover .card-cover img {
            transform: scale(1.05);
        }

        .method-card .card-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(10, 20, 45, 0.55));
            pointer-events: none;
        }

        .method-card .card-body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .method-card .card-body h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .method-card .card-body h3 i {
            color: var(--primary);
            font-size: 1.1rem;
        }

        .method-card .card-body p {
            color: var(--text-weak);
            font-size: 0.98rem;
            line-height: 1.75;
            margin-bottom: 16px;
            flex: 1;
        }

        .method-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 18px;
        }

        .tag {
            display: inline-block;
            background: var(--bg-soft);
            color: var(--text);
            border-radius: 50px;
            padding: 5px 14px;
            font-size: 13px;
            font-weight: 600;
        }

        .method-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--primary);
            margin-top: auto;
        }

        .method-card .card-link:hover {
            gap: 12px;
            color: var(--primary-dark);
        }

        /* ===== 入口状态 ===== */
        .status-section {
            padding: 80px 0;
            background: var(--surface);
        }

        .status-panel {
            max-width: 900px;
            margin: 0 auto;
            border: 1px solid var(--border);
            border-radius: calc(var(--radius) + 6px);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            background: #fff;
        }

        .status-panel-header {
            padding: 26px 32px;
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            background: linear-gradient(180deg, #f8faff, #ffffff);
        }

        .status-panel-header h2 {
            font-size: 1.25rem;
            margin: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .status-panel-header h2 i {
            color: var(--primary);
        }

        .live-badge {
            background: #dcfce7;
            color: #16a34a;
            padding: 5px 16px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .live-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #22c55e;
            animation: pulse 1.6s infinite;
        }

        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.6;
                transform: scale(1.3);
            }
        }

        .status-list li {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 18px 32px;
            border-bottom: 1px solid var(--border);
            transition: background 0.2s ease;
            flex-wrap: wrap;
        }

        .status-list li:last-child {
            border-bottom: none;
        }

        .status-list li:hover {
            background: #f8faff;
        }

        .status-index {
            width: 30px;
            height: 30px;
            border-radius: 10px;
            background: var(--bg-soft);
            color: var(--text);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .status-list li:nth-child(1) .status-index {
            background: #fef3c7;
            color: #d97706;
        }

        .status-list li:nth-child(2) .status-index {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .status-name {
            font-weight: 700;
            font-size: 0.98rem;
            min-width: 140px;
        }

        .status-badge {
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .status-badge.ok {
            background: #dcfce7;
            color: #16a34a;
        }

        .status-badge.warn {
            background: #fef3c7;
            color: #d97706;
        }

        .status-time {
            font-size: 13px;
            color: var(--text-weak);
            font-weight: 500;
        }

        .status-action {
            margin-left: auto;
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .status-action:hover {
            gap: 10px;
            color: var(--primary-dark);
        }

        @media (max-width: 640px) {
            .status-list li {
                padding: 16px 20px;
                gap: 12px;
            }
            .status-action {
                margin-left: 0;
                width: 100%;
                justify-content: flex-end;
                padding-top: 4px;
            }
            .status-name {
                min-width: 100px;
            }
        }

        /* ===== 登录流程 ===== */
        .steps-section {
            padding: 80px 0;
            background: var(--bg);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }

        .step-card {
            position: relative;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 26px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }

        .step-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }

        .step-num {
            width: 52px;
            height: 52px;
            margin: 0 auto 18px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.3rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 18px rgba(37, 99, 235, 0.3);
            position: relative;
        }

        .step-card:nth-child(2) .step-num {
            background: #0ea5e9;
            box-shadow: 0 8px 18px rgba(14, 165, 233, 0.3);
        }

        .step-card:nth-child(3) .step-num {
            background: #f59e0b;
            box-shadow: 0 8px 18px rgba(245, 158, 11, 0.3);
        }

        .step-card:nth-child(4) .step-num {
            background: #10b981;
            box-shadow: 0 8px 18px rgba(16, 185, 129, 0.3);
        }

        .step-card h3 {
            font-size: 1.08rem;
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 0.92rem;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .step-arrow {
            position: absolute;
            top: 50%;
            right: -20px;
            transform: translateY(-50%);
            color: var(--border);
            font-size: 1.4rem;
            z-index: 2;
            pointer-events: none;
        }

        @media (max-width: 900px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-arrow {
                display: none;
            }
        }

        /* ===== 用户话题聚合 ===== */
        .topics-section {
            padding: 80px 0;
            background: var(--surface);
        }

        .topic-panel {
            background: linear-gradient(135deg, #f0f5ff 0%, #f8faff 50%, #fef3e7 100%);
            border: 1px solid var(--border);
            border-radius: calc(var(--radius) + 8px);
            padding: 44px;
            position: relative;
            overflow: hidden;
        }

        .topic-panel::before {
            content: "\f086";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            right: 20px;
            top: 4px;
            font-size: 7.5rem;
            color: rgba(37, 99, 235, 0.08);
            line-height: 1;
        }

        .topic-header {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }

        .topic-header h2 {
            font-size: 1.6rem;
            margin-bottom: 8px;
        }

        .topic-header p {
            color: var(--text-weak);
            margin: 0;
        }

        .topic-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .topic-tags .tag {
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid rgba(37, 99, 235, 0.12);
            cursor: default;
            padding: 7px 16px;
            font-size: 14px;
        }

        .topic-tags .tag i {
            color: var(--primary);
            margin-right: 4px;
        }

        .topic-content {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 36px;
            align-items: center;
        }

        .topic-discuss-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .discuss-item {
            background: rgba(255, 255, 255, 0.88);
            border: 1px solid rgba(223, 230, 240, 0.8);
            border-radius: var(--radius-sm);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            gap: 14px;
            transition: var(--transition);
        }

        .discuss-item:hover {
            background: #fff;
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }

        .discuss-item .avatar {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            flex-shrink: 0;
        }

        .discuss-item .avatar.a2 {
            background: #fef3c7;
            color: #d97706;
        }

        .discuss-item .avatar.a3 {
            background: #dcfce7;
            color: #16a34a;
        }

        .discuss-item .discuss-text {
            flex: 1;
            font-size: 14.5px;
            line-height: 1.55;
            font-weight: 500;
        }

        .discuss-item .discuss-meta {
            font-size: 12px;
            color: var(--text-weak);
            display: flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }

        .discuss-item .discuss-meta i {
            color: var(--accent);
        }

        .topic-counter {
            background: rgba(255, 255, 255, 0.95);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px;
            text-align: center;
            box-shadow: var(--shadow-sm);
        }

        .topic-counter .counter-num {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -1px;
            line-height: 1.2;
        }

        .topic-counter .counter-num small {
            font-size: 1rem;
            color: var(--text-weak);
            font-weight: 600;
        }

        .topic-counter .counter-label {
            color: var(--text-weak);
            font-size: 14px;
            margin-top: 4px;
            margin-bottom: 18px;
        }

        .topic-avatars {
            display: flex;
            justify-content: center;
            gap: -8px;
            margin-bottom: 20px;
        }

        .topic-avatars .avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            border: 3px solid #fff;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 13px;
        }

        .topic-avatars .avatar:nth-child(2) {
            background: #fef3c7;
            color: #d97706;
        }

        .topic-avatars .avatar:nth-child(3) {
            background: #dcfce7;
            color: #16a34a;
        }

        .topic-avatars .avatar:nth-child(4) {
            background: #fee2e2;
            color: #dc2626;
        }

        .topic-avatars .avatar.plus {
            background: var(--primary);
            color: #fff;
            font-size: 14px;
        }

        @media (max-width: 900px) {
            .topic-content {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 640px) {
            .topic-panel {
                padding: 28px;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0;
            background: var(--bg);
        }

        .faq-list {
            max-width: 860px;
            margin: 48px auto 0;
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: rgba(37, 99, 235, 0.2);
        }

        .faq-item summary {
            list-style: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 22px 28px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--text);
            transition: var(--transition);
            position: relative;
        }

        .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: 0.85rem;
            color: var(--primary);
            background: var(--primary-soft);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-item .faq-answer {
            padding: 0 28px 26px;
            color: var(--text-weak);
            line-height: 1.8;
            font-size: 0.97rem;
        }

        .faq-item .faq-answer a {
            font-weight: 600;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            position: relative;
            background: linear-gradient(135deg, #172f6e 0%, #1e40af 50%, #2563eb 100%);
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.18) 0%, transparent 40%),
                radial-gradient(circle at 15% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 30%);
            pointer-events: none;
        }

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

        .cta-inner h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            color: #fff;
            margin-bottom: 14px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.88);
            font-size: 1.05rem;
            margin-bottom: 30px;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: #0d1630;
            color: rgba(255, 255, 255, 0.82);
            padding: 68px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 0.8fr;
            gap: 44px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .footer-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .footer-logo .f-accent {
            color: #93b4ff;
        }

        .footer-brand p {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            max-width: 320px;
            margin-bottom: 0;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 18px;
            font-weight: 700;
        }

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

        .footer-col ul a {
            color: rgba(255, 255, 255, 0.72);
            font-size: 0.93rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .footer-col ul a i {
            color: #93b4ff;
            font-size: 0.85rem;
        }

        .footer-col ul a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-bottom .domain-name {
            color: rgba(255, 255, 255, 0.4);
            font-size: 13px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                row-gap: 32px;
            }

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

        @media (max-width: 900px) {
            .header-inner {
                flex-wrap: nowrap;
            }

            .nav-toggle {
                display: flex;
            }

            .site-nav {
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                gap: 8px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 18px 30px rgba(15, 37, 78, 0.12);
                display: none;
                z-index: 99;
            }

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

            .site-nav a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                border: 1px solid transparent;
            }

            .site-nav a.nav-cta {
                margin-left: 0;
                margin-top: 8px;
                justify-content: center;
                padding: 13px 22px;
            }
        }

        @media (max-width: 768px) {
            .overview-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .overview-section {
                padding: 56px 0 20px;
            }

            .section-block {
                padding: 56px 0;
            }

            .section-head {
                margin-bottom: 36px;
            }

            .page-hero {
                padding: 68px 0 62px;
            }

            .page-hero h1 {
                font-size: 1.8rem;
            }

            .status-panel {
                margin: 0 -8px;
            }

            .status-panel-header {
                padding: 20px;
            }

            .topic-content {
                gap: 24px;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 18px;
            }

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

            .step-arrow {
                display: none;
            }

            .site-logo {
                font-size: 1.25rem;
            }

            .site-logo span {
                font-size: 1rem;
            }

            .hero-actions {
                width: 100%;
            }

            .hero-actions .btn {
                flex: 1;
            }

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

            .discuss-item {
                flex-wrap: wrap;
            }

            .discuss-item .discuss-meta {
                width: 100%;
                margin-left: 52px;
            }

            .status-list li {
                padding: 14px 16px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                gap: 10px;
            }

            .site-nav a {
                font-size: 14px;
                padding: 10px 12px;
            }

            .page-hero h1 {
                font-size: 1.6rem;
            }

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

            .method-card .card-body {
                padding: 20px;
            }

            .faq-item summary {
                padding: 18px 18px;
                font-size: 0.95rem;
                line-height: 1.5;
            }

            .faq-item .faq-answer {
                padding: 0 18px 20px;
            }

            .topic-header {
                flex-direction: column;
            }
        }

/* roulang page: article */
:root {
  --primary: #4f46e5;
  --primary-dark: #3730a3;
  --primary-light: #818cf8;
  --primary-soft: #eef2ff;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --bg: #f6f7fb;
  --bg-deep: #0f172a;
  --bg-deep-2: #1e293b;
  --text: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --border-soft: #eef2f7;
  --white: #ffffff;
  --success: #10b981;
  --danger: #ef4444;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-sm: 8px;
  --shadow-xs: 0 1px 2px rgba(15,23,42,0.04);
  --shadow-sm: 0 2px 8px rgba(15,23,42,0.06);
  --shadow-md: 0 6px 20px rgba(15,23,42,0.08);
  --shadow-lg: 0 12px 32px rgba(15,23,42,0.10);
  --shadow-primary: 0 8px 24px rgba(79,70,229,0.20);
  --space-section: 80px;
  --space-section-sm: 56px;
  --font-sans: 'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: var(--primary); transition: color .2s ease; }
a:hover { color: var(--primary-dark); }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.bg-deep { background: var(--bg-deep); color: #fff; }

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-soft);
  box-shadow: var(--shadow-xs);
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 20px;
}
.site-logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 4px;
  letter-spacing: -0.5px;
  white-space: nowrap;
}
.site-logo .f-accent {
  color: var(--primary);
  font-weight: 700;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.site-nav a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: all .2s ease;
  white-space: nowrap;
}
.site-nav a:hover {
  background: var(--primary-soft);
  color: var(--primary);
}
.site-nav a.active {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-primary);
}
.nav-cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff !important;
  border-radius: 24px !important;
  padding: 10px 22px !important;
  font-weight: 600;
  box-shadow: var(--shadow-primary);
  margin-left: 8px;
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(79,70,229,0.28);
  color: #fff !important;
}
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  width: 44px;
  height: 44px;
  font-size: 18px;
  color: var(--text);
  align-items: center;
  justify-content: center;
  transition: all .2s ease;
}
.nav-toggle:hover {
  background: var(--primary-soft);
  color: var(--primary);
  border-color: var(--primary-light);
}

/* ===== 页面横幅 ===== */
.page-banner {
  position: relative;
  padding: 90px 0 80px;
  background-size: cover;
  background-position: center;
  color: #fff;
}
.page-banner .banner-inner {
  position: relative;
  z-index: 2;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: rgba(255,255,255,0.88);
  transition: color .2s;
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb i { font-size: 11px; }
.breadcrumb span { color: rgba(255,255,255,0.6); }
.banner-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.16);
  border: 1px solid rgba(255,255,255,0.24);
  color: #fff;
  padding: 6px 18px;
  border-radius: 24px;
  font-size: 13px;
  font-weight: 600;
  backdrop-filter: blur(8px);
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}
.banner-badge i {
  font-size: 12px;
  color: var(--accent);
}
.page-banner h1 {
  font-size: 40px;
  line-height: 1.25;
  font-weight: 800;
  max-width: 820px;
  letter-spacing: -0.5px;
  text-shadow: 0 2px 16px rgba(0,0,0,0.15);
  margin-bottom: 12px;
}
.page-banner .banner-desc {
  font-size: 17px;
  color: rgba(255,255,255,0.8);
  max-width: 680px;
  line-height: 1.6;
}

/* ===== 文章主体 ===== */
.article-section {
  padding: 60px 0 70px;
  background: var(--bg);
}
.article-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-soft);
  padding: 44px;
  margin-bottom: 28px;
  transition: box-shadow .3s ease;
}
.article-card:hover { box-shadow: var(--shadow-md); }
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 28px;
}
.article-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  color: var(--text-muted);
}
.article-meta-item i {
  color: var(--primary);
  font-size: 14px;
}
.article-meta-item .cat-link {
  color: var(--primary);
  font-weight: 600;
  padding: 3px 12px;
  background: var(--primary-soft);
  border-radius: 16px;
  font-size: 13px;
}
.article-cover {
  width: 100%;
  border-radius: var(--radius);
  margin-bottom: 28px;
  box-shadow: var(--shadow-sm);
}
.article-content {
  font-size: 16px;
  line-height: 1.9;
  color: #334155;
}
.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  margin: 40px 0 16px;
  color: var(--text);
  padding-left: 16px;
  border-left: 4px solid var(--primary);
  line-height: 1.3;
}
.article-content h3 {
  font-size: 21px;
  font-weight: 700;
  margin: 28px 0 12px;
  color: var(--text);
}
.article-content p {
  margin-bottom: 18px;
}
.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.article-content ul, .article-content ol {
  margin: 0 0 20px 24px;
}
.article-content li {
  margin-bottom: 8px;
  padding-left: 4px;
}
.article-content img {
  border-radius: var(--radius);
  margin: 24px 0;
  box-shadow: var(--shadow-sm);
}
.article-content blockquote {
  background: var(--primary-soft);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 20px 24px;
  margin: 24px 0;
  font-style: italic;
  color: #4a5568;
}
.article-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-top: 24px;
  border-top: 1px solid var(--border-soft);
  margin-top: 32px;
}
.tag-label {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 600;
}
.tag-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  transition: all .2s ease;
}
.tag-badge:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-primary);
}
.article-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.action-btns {
  display: flex;
  gap: 10px;
}
.btn-like {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 24px;
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: all .2s ease;
}
.btn-like:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-soft);
}
.btn-like .count {
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 10px;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 700;
}
.btn-share {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 24px;
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: all .2s ease;
  cursor: pointer;
}
.btn-share:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
  background: #fffbeb;
}
.article-nav {
  display: flex;
  gap: 14px;
  margin-top: 30px;
  flex-wrap: wrap;
}
.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  transition: all .2s ease;
  box-shadow: var(--shadow-primary);
}
.btn-back:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  color: #fff;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: var(--radius-sm);
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  transition: all .2s ease;
}
.btn-secondary:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

/* ===== 侧边栏 ===== */
.sidebar-widget {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 26px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-xs);
  transition: box-shadow .3s ease;
}
.sidebar-widget:hover { box-shadow: var(--shadow-sm); }
.widget-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--primary-soft);
  position: relative;
}
.widget-title::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 44px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
}
.widget-title i {
  color: var(--primary);
  font-size: 17px;
}
.cat-list {
  list-style: none;
}
.cat-list li {
  border-bottom: 1px solid var(--border-soft);
}
.cat-list li:last-child { border-bottom: none; }
.cat-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 6px;
  color: var(--text);
  font-weight: 500;
  font-size: 15px;
  transition: all .2s ease;
  border-radius: var(--radius-sm);
}
.cat-list a:hover {
  background: var(--primary-soft);
  color: var(--primary);
  padding-left: 14px;
}
.cat-list .cat-count {
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  border-radius: 10px;
  padding: 2px 10px;
}
.rank-list {
  list-style: none;
  counter-reset: rank;
}
.rank-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 11px 4px;
  border-bottom: 1px solid var(--border-soft);
  transition: all .2s;
}
.rank-list li:last-child { border-bottom: none; }
.rank-list li:hover {
  background: var(--primary-soft);
  border-radius: var(--radius-sm);
  padding-left: 12px;
}
.rank-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 14px;
  color: var(--white);
  background: var(--primary);
  flex-shrink: 0;
}
.rank-list li:nth-child(1) .rank-num {
  background: linear-gradient(135deg, #f59e0b, #d97706);
}
.rank-list li:nth-child(2) .rank-num {
  background: linear-gradient(135deg, #94a3b8, #64748b);
}
.rank-list li:nth-child(3) .rank-num {
  background: linear-gradient(135deg, #d97706, #b45309);
}
.rank-item-link {
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
  flex: 1;
  transition: color .2s;
}
.rank-item-link:hover { color: var(--primary); }
.rank-item-link .rank-item-meta {
  display: block;
  font-size: 12px;
  color: var(--text-light);
  margin-top: 2px;
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag-cloud a {
  display: inline-block;
  padding: 6px 14px;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 18px;
  color: var(--text-muted);
  font-size: 13px;
  transition: all .2s ease;
}
.tag-cloud a:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-2px);
}
.safety-card {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  border-radius: var(--radius-lg);
  padding: 28px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.safety-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(79,70,229,0.25);
  transform: translate(30%, -30%);
}
.safety-card .safe-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(79,70,229,0.2);
  border-radius: 16px;
  margin-bottom: 16px;
  color: var(--primary-light);
  font-size: 22px;
  border: 1px solid rgba(79,70,229,0.3);
}
.safety-card h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}
.safety-card p {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  line-height: 1.6;
}
.safety-card .safe-tag {
  display: inline-block;
  margin-top: 14px;
  padding: 4px 12px;
  background: rgba(16,185,129,0.2);
  border: 1px solid rgba(16,185,129,0.3);
  color: #4ade80;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 600;
}

/* ===== 相关文章 ===== */
.related-section {
  padding: 70px 0;
  background: var(--white);
  border-top: 1px solid var(--border-soft);
}
.section-title-wrap {
  margin-bottom: 38px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.section-title-lg {
  font-size: 30px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.5px;
  line-height: 1.2;
}
.section-title-lg .sepline {
  display: block;
  width: 52px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 2px;
  margin-top: 10px;
}
.section-sub-text {
  font-size: 15px;
  color: var(--text-muted);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--white);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .3s ease;
  display: flex;
  flex-direction: column;
}
.related-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: var(--primary-light);
}
.related-card .rc-cover {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: var(--bg-deep-2);
}
.related-card .rc-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.related-card:hover .rc-cover img { transform: scale(1.06); }
.related-card .rc-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(15,23,42,0.5));
}
.related-card .rc-cat {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: rgba(255,255,255,0.92);
  color: var(--primary);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  backdrop-filter: blur(6px);
}
.related-card .rc-body {
  padding: 22px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.related-card .rc-title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .2s;
}
.related-card .rc-title:hover { color: var(--primary); }
.related-card .rc-excerpt {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
  flex: 1;
}
.related-card .rc-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border-soft);
  font-size: 13px;
  color: var(--text-light);
}
.related-card .rc-meta i {
  font-size: 12px;
  margin-right: 4px;
}

/* ===== 讨论区 ===== */
.discuss-section {
  padding: 70px 0;
  background: var(--bg);
}
.discuss-card {
  background: linear-gradient(135deg, #f0f4ff, #faf5ff);
  border-radius: var(--radius-lg);
  border: 1px solid var(--primary-soft);
  padding: 48px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.discuss-avatars {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: -8px;
  margin-bottom: 20px;
}
.discuss-avatars .avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 3px solid #fff;
  background: var(--primary-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 16px;
  margin-left: -8px;
  box-shadow: var(--shadow-sm);
}
.discuss-avatars .avatar:first-child { margin-left: 0; }
.discuss-avatars .avatar:nth-child(2) { background: #e0f2fe; color: #0284c7; }
.discuss-avatars .avatar:nth-child(3) { background: #fef3c7; color: #d97706; }
.discuss-avatars .avatar:nth-child(4) { background: #dcfce7; color: #16a34a; }
.discuss-avatars .avatar-more {
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
}
.discuss-card h3 {
  font-size: 24px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 8px;
}
.discuss-card p {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 24px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.discuss-stats {
  display: flex;
  justify-content: center;
  gap: 36px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.discuss-stat-item {
  text-align: center;
}
.discuss-stat-item .stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}
.discuss-stat-item .stat-label {
  font-size: 13px;
  color: var(--text-muted);
}
.discuss-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  padding: 14px 34px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 15px;
  transition: all .25s ease;
  box-shadow: var(--shadow-primary);
}
.discuss-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 14px 36px rgba(79,70,229,0.3);
  color: #fff;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 70px 0;
  background: var(--white);
  border-top: 1px solid var(--border-soft);
}
.faq-grid {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--bg);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow .3s ease;
}
.faq-item:hover { box-shadow: var(--shadow-sm); border-color: var(--primary-light); }
.faq-item summary {
  padding: 20px 26px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: color .2s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--primary); }
.faq-item summary::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 13px;
  color: var(--primary);
  transition: transform .3s ease;
  flex-shrink: 0;
}
.faq-item[open] summary::after {
  transform: rotate(180deg);
}
.faq-item .faq-body {
  padding: 0 26px 20px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== CTA ===== */
.cta-section {
  padding: 70px 0;
  background: linear-gradient(135deg, var(--bg-deep), var(--bg-deep-2));
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  opacity: 0.12;
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  padding: 20px 0;
}
.cta-inner h2 {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  line-height: 1.25;
}
.cta-inner p {
  font-size: 16px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 30px;
}
.cta-inner .cta-btns {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.cta-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  padding: 15px 36px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 16px;
  transition: all .25s ease;
  box-shadow: 0 8px 24px rgba(245,158,11,0.3);
}
.cta-btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(245,158,11,0.35);
  color: #fff;
}
.cta-btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 2px solid rgba(255,255,255,0.3);
  color: #fff;
  padding: 14px 32px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 16px;
  transition: all .25s ease;
}
.cta-btn-ghost:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.1);
  color: #fff;
  transform: translateY(-3px);
}

/* ===== 页脚 ===== */
.site-footer {
  background: #0b1120;
  color: rgba(255,255,255,0.65);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 44px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}
.footer-logo .f-accent {
  color: var(--primary-light);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,0.55);
  max-width: 320px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.footer-col ul {
  list-style: none;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul a {
  color: rgba(255,255,255,0.55);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all .2s;
}
.footer-col ul a i {
  font-size: 11px;
  color: var(--primary-light);
  transition: transform .2s;
}
.footer-col ul a:hover {
  color: #fff;
}
.footer-col ul a:hover i {
  transform: translateX(3px);
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom .domain-name {
  color: rgba(255,255,255,0.3);
  font-family: monospace;
}

/* ===== 内容未找到 ===== */
.not-found {
  text-align: center;
  padding: 70px 30px;
}
.not-found i {
  font-size: 64px;
  color: var(--text-light);
  margin-bottom: 20px;
}
.not-found h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 10px;
}
.not-found p {
  color: var(--text-muted);
  margin-bottom: 28px;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .container { padding: 0 20px; }
  .page-banner h1 { font-size: 34px; }
  .article-card { padding: 30px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .site-header .nav-container { min-height: 64px; }
  .site-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px 20px 24px;
    border-radius: 0 0 16px 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform .35s ease, opacity .25s ease;
    align-items: stretch;
    z-index: 99;
  }
  .site-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .site-nav a {
    padding: 13px 16px;
    font-size: 16px;
    border-radius: var(--radius-sm);
  }
  .site-nav .nav-cta {
    margin-left: 0;
    margin-top: 8px;
    text-align: center;
    justify-content: center;
  }
  .nav-toggle { display: inline-flex; }
  .page-banner { padding: 70px 0 60px; }
  .page-banner h1 { font-size: 28px; }
  .article-section { padding: 40px 0 50px; }
  .article-card { padding: 24px 20px; }
  .related-grid { grid-template-columns: 1fr; }
  .discuss-card { padding: 30px 22px; }
  .cta-inner h2 { font-size: 28px; }
  .section-title-lg { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .site-logo { font-size: 19px; }
  .page-banner h1 { font-size: 24px; }
  .breadcrumb { font-size: 13px; }
  .article-meta { gap: 10px; flex-direction: column; align-items: flex-start; }
  .article-content { font-size: 15px; line-height: 1.8; }
  .article-content h2 { font-size: 22px; }
  .related-card .rc-cover { height: 170px; }
  .discuss-stats { gap: 20px; }
  .discuss-stat-item .stat-num { font-size: 22px; }
  .cta-btns { flex-direction: column; align-items: center; }
  .cta-btn-primary, .cta-btn-ghost { width: 100%; justify-content: center; }
  .faq-item summary { padding: 16px 18px; font-size: 15px; }
  .faq-item .faq-body { padding: 0 18px 16px; }
}

/* roulang page: category2 */
/* ========== 设计变量 ========== */
:root {
  --primary: #1a5276;
  --primary-dark: #0e3a52;
  --primary-light: #2e86c1;
  --accent: #f39c12;
  --accent-light: #fdebd0;
  --success: #27ae60;
  --danger: #c0392b;
  --bg: #f0f4f8;
  --bg-white: #ffffff;
  --bg-dark: #0b1a26;
  --text: #1c2833;
  --text-weak: #5d6d7e;
  --text-muted: #85929e;
  --border: #d5dbdb;
  --border-light: #ebedef;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --transition: all 0.3s ease;
  --space-section: 80px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.75;
  color: var(--text);
  background-color: var(--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-light);
}

ul, ol {
  list-style: none;
}

button, input, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  border: none;
  outline: none;
  background: none;
}

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

/* ========== 导航 ========== */
.site-header {
  background: var(--bg-dark);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.site-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.5px;
}

.site-logo .logo-icon {
  background: var(--accent);
  width: 36px;
  height: 36px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: #fff;
}

.site-logo .logo-text {
  background: linear-gradient(135deg, #fff 0%, #aed6f1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.site-logo .logo-accent {
  color: var(--accent);
  -webkit-text-fill-color: var(--accent);
  font-weight: 700;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.site-nav a {
  color: rgba(255,255,255,0.8);
  padding: 9px 20px;
  border-radius: 30px;
  font-size: 0.925rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.site-nav a:hover {
  color: #fff;
  background: rgba(255,255,255,0.1);
}

.site-nav a.active {
  color: #fff;
  background: var(--primary-light);
  box-shadow: 0 4px 15px rgba(46, 134, 193, 0.4);
}

.site-nav a.nav-cta {
  background: linear-gradient(135deg, var(--accent), #e67e22);
  color: #fff;
  padding: 10px 24px;
  border-radius: 30px;
  font-weight: 600;
  margin-left: 8px;
  box-shadow: 0 4px 18px rgba(243, 156, 18, 0.4);
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-nav a.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(243, 156, 18, 0.55);
  color: #fff;
}

/* ========== 页面 Banner ========== */
.page-hero {
  position: relative;
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary-dark) 60%, #194f72 100%);
  padding: 110px 0 90px;
  overflow: hidden;
  text-align: center;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: 0.25;
  mix-blend-mode: overlay;
}

.page-hero::after {
  content: "";
  position: absolute;
  top: -50%;
  right: -30%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(46,134,193,0.4) 0%, transparent 70%);
  pointer-events: none;
}

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

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(8px);
  padding: 8px 20px;
  border-radius: 30px;
  color: #aed6f1;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 24px;
}

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

.page-hero h1 {
  font-size: 3rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: 1px;
  text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.page-hero h1 span {
  display: block;
  background: linear-gradient(135deg, var(--accent), #f9e79f);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-hero p.hero-desc {
  color: rgba(255,255,255,0.85);
  font-size: 1.125rem;
  max-width: 680px;
  margin: 0 auto 36px;
  line-height: 1.9;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent), #e67e22);
  color: #fff;
  padding: 14px 34px;
  border-radius: 40px;
  font-weight: 600;
  font-size: 1rem;
  box-shadow: 0 6px 22px rgba(243, 156, 18, 0.4);
  transition: var(--transition);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(243, 156, 18, 0.55);
  color: #fff;
}

.btn-outline-light {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 2px solid rgba(255,255,255,0.5);
  color: #fff;
  padding: 13px 32px;
  border-radius: 40px;
  font-weight: 500;
  transition: var(--transition);
}

.btn-outline-light:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.1);
  color: #fff;
  transform: translateY(-3px);
}

.hero-metrics {
  margin-top: 60px;
  display: flex;
  justify-content: center;
  gap: 60px;
  flex-wrap: wrap;
}

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

.metric-item .num {
  font-size: 2.25rem;
  font-weight: 800;
  color: #fff;
  display: block;
  line-height: 1.2;
}

.metric-item .num em {
  font-style: normal;
  color: var(--accent);
}

.metric-item .label {
  color: rgba(255,255,255,0.6);
  font-size: 0.875rem;
  margin-top: 6px;
}

/* ========== 板块通用 ========== */
.section {
  padding: var(--space-section) 0;
}

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

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

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 52px;
}

.section-head .subtitle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary-light);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-head .subtitle::before,
.section-head .subtitle::after {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--accent);
}

.section-head h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-head p {
  color: var(--text-weak);
  font-size: 1rem;
  line-height: 1.8;
}

/* ========== 安全体系图文区 ========== */
.safety-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.safety-intro .intro-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.safety-intro .intro-img img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.safety-intro .intro-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.3), transparent 60%);
}

.safety-intro .intro-badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  z-index: 2;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 12px;
  padding: 12px 20px;
  color: #fff;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.safety-intro .intro-badge i {
  color: var(--accent);
  font-size: 1.25rem;
}

.intro-content .intro-title {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.4;
  color: var(--text);
}

.intro-content p {
  color: var(--text-weak);
  margin-bottom: 18px;
  line-height: 1.9;
}

.intro-points {
  margin-top: 24px;
  display: grid;
  gap: 12px;
}

.intro-points li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
}

.intro-points li i {
  color: var(--success);
  font-size: 1.1rem;
  margin-top: 4px;
}

.intro-points li span {
  font-weight: 500;
}

.intro-points li small {
  display: block;
  color: var(--text-weak);
  font-size: 0.875rem;
  font-weight: 400;
}

/* ========== 安全措施卡片 ========== */
.safety-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.safety-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.safety-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-light), var(--accent));
  opacity: 0;
  transition: var(--transition);
}

.safety-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

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

.card-icon {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: #fff;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  box-shadow: 0 8px 20px rgba(30, 80, 120, 0.3);
}

.safety-card:nth-child(2) .card-icon {
  background: linear-gradient(135deg, var(--accent), #e67e22);
  box-shadow: 0 8px 20px rgba(243, 156, 18, 0.3);
}

.safety-card:nth-child(3) .card-icon {
  background: linear-gradient(135deg, var(--success), #1e8449);
  box-shadow: 0 8px 20px rgba(39, 174, 96, 0.3);
}

.safety-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text);
}

.safety-card p {
  color: var(--text-weak);
  font-size: 0.925rem;
  line-height: 1.8;
}

.card-tag {
  display: inline-block;
  background: var(--accent-light);
  color: #b9770e;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 10px;
}

/* ========== 数据统计 ========== */
.stats-section {
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary-dark) 100%);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  opacity: 0.1;
}

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

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.stat-item {
  text-align: center;
  padding: 30px 20px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.stat-item:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-5px);
}

.stat-item .stat-icon {
  font-size: 2rem;
  color: var(--accent);
  margin-bottom: 12px;
}

.stat-item .stat-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: #fff;
}

.stat-item .stat-num span {
  color: var(--accent);
}

.stat-item .stat-label {
  color: rgba(255,255,255,0.7);
  font-size: 0.925rem;
  margin-top: 8px;
}

/* ========== 安全流程 ========== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  position: relative;
}

.steps-grid::before {
  content: "";
  position: absolute;
  top: 32px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-light), var(--accent));
  z-index: 0;
  opacity: 0.5;
}

.step-item {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-num {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: #fff;
  font-size: 1.4rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(26, 82, 118, 0.3);
  border: 4px solid var(--bg-white);
}

.step-item h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.step-item p {
  font-size: 0.875rem;
  color: var(--text-weak);
  line-height: 1.7;
}

/* ========== 安全清单 ========== */
.checklist-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.check-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--bg-white);
  padding: 20px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

.check-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(6px);
  border-left: 3px solid var(--success);
}

.check-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(39, 174, 96, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--success);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.check-item h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.check-item p {
  font-size: 0.875rem;
  color: var(--text-weak);
  line-height: 1.7;
}

/* ========== FAQ ========== */
.faq-wrap {
  max-width: 850px;
  margin: 0 auto;
}

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

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

.faq-question {
  padding: 20px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  background: var(--bg-white);
  transition: var(--transition);
}

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

.faq-question i {
  color: var(--primary-light);
  transition: transform 0.3s;
}

.faq-answer {
  padding: 0 28px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  color: var(--text-weak);
  font-size: 0.925rem;
  line-height: 1.8;
  border-top: 1px solid var(--border-light);
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 18px 28px;
}

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

/* ========== CTA 区块 ========== */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, #1a5276 100%);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity: 0.15;
}

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

.cta-section h2 {
  color: #fff;
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 18px;
}

.cta-section p {
  color: rgba(255,255,255,0.8);
  font-size: 1.125rem;
  margin-bottom: 36px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.7);
  padding-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand .footer-logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}

.footer-brand .footer-logo .f-accent {
  color: var(--accent);
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.6);
}

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--accent);
}

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

.footer-col ul li a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer-col ul li a i {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.3);
}

.footer-col ul li a .fa-circle-check {
  color: #4ade80;
  font-size: 0.875rem;
}

.footer-col ul li a .fa-headset {
  color: var(--accent);
  font-size: 0.875rem;
}

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.4);
}

.footer-bottom .domain-name {
  color: rgba(255,255,255,0.6);
}

/* ========== 响应式 ========== */
@media screen and (max-width: 1024px) {
  .safety-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 44px;
  }

  .steps-grid::before {
    display: none;
  }

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

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

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

  .page-hero h1 {
    font-size: 2.4rem;
  }
}

@media screen and (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }

  .site-logo {
    justify-content: center;
  }

  .site-nav {
    justify-content: center;
    gap: 4px;
  }

  .site-nav a {
    padding: 8px 14px;
    font-size: 0.85rem;
  }

  .page-hero {
    padding: 70px 0 60px;
  }

  .page-hero h1 {
    font-size: 1.9rem;
  }

  .safety-cards {
    grid-template-columns: 1fr;
  }

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

  .section-head h2 {
    font-size: 1.7rem;
  }

  .hero-metrics {
    gap: 28px;
  }

  .metric-item .num {
    font-size: 1.5rem;
  }
}

@media screen and (max-width: 520px) {
  .container {
    padding: 0 18px;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 2px;
  }

  .site-nav a {
    font-size: 0.8rem;
    padding: 6px 10px;
  }

  .site-nav a.nav-cta {
    width: 100%;
    justify-content: center;
    margin-top: 6px;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .page-hero h1 {
    font-size: 1.5rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn-primary, .btn-outline-light {
    width: 100%;
    justify-content: center;
  }
}

/* roulang page: category3 */
:root {
    --primary: #4f46e5;
    --primary-light: #818cf8;
    --primary-dark: #3730a3;
    --accent: #f59e0b;
    --accent-light: #fbbf24;
    --bg: #f8fafc;
    --bg-alt: #eef2ff;
    --dark-bg: #0f172a;
    --text: #1e293b;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
    --shadow-primary: 0 8px 30px rgba(79, 70, 229, 0.25);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --container-width: 1200px;
    --header-height: 72px;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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;
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

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

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

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

.grid-container {
    max-width: var(--container-width);
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    border: 2px solid transparent;
    transition: var(--transition);
    cursor: pointer;
    text-align: center;
    white-space: nowrap;
}

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

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(79, 70, 229, 0.35);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 4px 20px rgba(79, 70, 229, 0.25);
}

.btn-primary:focus-visible {
    outline: 3px solid rgba(79, 70, 229, 0.4);
    outline-offset: 2px;
}

.btn-ghost {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(4px);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

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

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 10px rgba(0, 0, 0, 0.03);
}

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

.site-logo {
    display: flex;
    align-items: center;
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text);
    flex-shrink: 0;
}

.site-logo .f-accent {
    color: var(--primary);
    font-weight: 700;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

.site-nav a {
    display: inline-flex;
    align-items: center;
    padding: 10px 18px;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-light);
    transition: var(--transition);
}

.site-nav a:hover {
    color: var(--primary);
    background: var(--bg-alt);
}

.site-nav a.active {
    color: var(--primary);
    background: var(--bg-alt);
    font-weight: 600;
    box-shadow: inset 0 0 0 1px rgba(79, 70, 229, 0.1);
}

.site-nav .nav-cta {
    background: var(--primary);
    color: #fff;
    padding: 11px 26px;
    border-radius: 30px;
    font-weight: 600;
    margin-left: 8px;
    box-shadow: 0 4px 18px rgba(79, 70, 229, 0.25);
}

.site-nav .nav-cta:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(79, 70, 229, 0.35);
}

.site-nav .nav-cta i {
    font-size: 13px;
}

.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: var(--bg-alt);
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--primary);
    transition: var(--transition);
}

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

/* ===== Hero ===== */
.page-hero {
    position: relative;
    min-height: 520px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    background-color: var(--dark-bg);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.4;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.7) 0%, rgba(79, 70, 229, 0.4) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 120px 24px;
    color: #fff;
    max-width: 860px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 40px;
    padding: 8px 20px;
    font-size: 14px;
    font-weight: 600;
    backdrop-filter: blur(8px);
    margin-bottom: 24px;
}

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

.hero-content h1 {
    font-size: 48px;
    line-height: 1.2;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 20px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero-content p {
    font-size: 18px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 36px;
}

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

/* ===== Section 通用 ===== */
.section {
    padding: 96px 0;
}

.section-head {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 56px;
}

.section-head.left {
    text-align: left;
    margin: 0 0 32px;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    background: var(--bg-alt);
    padding: 6px 16px;
    border-radius: 30px;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.section-head h2 {
    font-size: 36px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text);
    line-height: 1.3;
    margin-bottom: 12px;
}

.section-head p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.7;
}

.section-head.light h2 {
    color: #fff;
}

.section-head.light p {
    color: rgba(255, 255, 255, 0.7);
}

.section-head.light .section-tag {
    background: rgba(255, 255, 255, 0.12);
    color: var(--accent-light);
}

/* ===== 分类卡片 ===== */
.categories-section {
    background: var(--bg);
}

.category-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px 36px;
    text-align: left;
    height: 100%;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

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

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

.category-icon {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: var(--bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    color: var(--primary);
    margin-bottom: 24px;
    transition: var(--transition);
}

.category-card:hover .category-icon {
    background: var(--primary);
    color: #fff;
    transform: scale(1.05);
    box-shadow: var(--shadow-primary);
}

.category-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text);
}

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

.category-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 14px;
    color: var(--primary);
    transition: var(--transition);
}

.category-link:hover {
    gap: 12px;
    color: var(--primary-dark);
}

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

.faq-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 40px;
    align-items: start;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: rgba(79, 70, 229, 0.2);
    box-shadow: var(--shadow);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 22px 24px;
    background: transparent;
    transition: var(--transition);
    text-align: left;
}

.faq-question:hover {
    background: var(--bg-alt);
}

.faq-q-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 14px;
    transition: var(--transition);
}

.faq-item.open .faq-q-icon {
    background: var(--primary);
    color: #fff;
}

.faq-q-text {
    flex: 1;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    line-height: 1.4;
}

.faq-q-toggle {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 13px;
    transition: var(--transition);
}

.faq-item.open .faq-q-toggle {
    background: var(--primary);
    color: #fff;
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-answer-inner {
    padding: 0 24px 24px 76px;
}

.faq-answer-inner p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
}

/* FAQ 侧栏 */
.faq-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
    position: sticky;
    top: calc(var(--header-height) + 20px);
}

.sidebar-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
}

.sidebar-card h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-card h4 i {
    color: var(--primary);
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-alt);
    color: var(--text-light);
    padding: 6px 14px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition);
    border: 1px solid transparent;
}

.tag-item:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

.sidebar-stats {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.sidebar-stat {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 12px;
    border-bottom: 1px dashed var(--border);
}

.sidebar-stat:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.sidebar-stat .stat-label {
    font-size: 14px;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-stat .stat-label i {
    color: var(--accent);
}

.sidebar-stat .stat-value {
    font-size: 18px;
    font-weight: 800;
    color: var(--text);
    background: var(--bg-alt);
    padding: 2px 12px;
    border-radius: 20px;
}

/* ===== 流程 ===== */
.process-section {
    background: var(--dark-bg);
    position: relative;
    overflow: hidden;
}

.process-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    opacity: 0.15;
    pointer-events: none;
}

.process-section .container {
    position: relative;
    z-index: 1;
}

.process-step {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: 36px 30px;
    height: 100%;
    transition: var(--transition);
    backdrop-filter: blur(8px);
}

.process-step:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-6px);
    border-color: rgba(255, 255, 255, 0.2);
}

.step-num {
    font-size: 42px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    line-height: 1;
}

.process-step h3 {
    color: #fff;
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 10px;
}

.process-step p {
    color: rgba(255, 255, 255, 0.65);
    font-size: 14px;
    line-height: 1.6;
}

/* ===== 统计 ===== */
.stats-section {
    background: #fff;
    border-bottom: 1px solid var(--border);
}

.stat-item {
    text-align: center;
    padding: 30px 20px;
}

.stat-num {
    font-size: 52px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    margin-bottom: 8px;
    display: block;
}

.stat-label {
    font-size: 15px;
    color: var(--text-light);
    font-weight: 500;
}

/* ===== 小贴士 ===== */
.tips-section {
    background: var(--bg);
}

.tips-section .tips-media {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.tips-section .tips-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 380px;
    display: block;
}

.tip-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 8px;
}

.tip-list li {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    transition: var(--transition);
}

.tip-list li:hover {
    transform: translateX(6px);
    box-shadow: var(--shadow);
    border-color: rgba(79, 70, 229, 0.15);
}

.tip-list li i {
    color: var(--primary);
    font-size: 20px;
    margin-top: 3px;
}

.tip-list li span {
    font-size: 15px;
    color: var(--text);
    font-weight: 500;
    line-height: 1.6;
}

/* ===== 社区讨论 ===== */
.community-section {
    background: #fff;
}

.discuss-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
    margin-bottom: 14px;
}

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

.discuss-avatar {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    font-weight: 700;
}

.discuss-body {
    flex: 1;
}

.discuss-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}

.discuss-name {
    font-size: 14px;
    font-weight: 700;
    color: var(--text);
}

.discuss-badge {
    font-size: 11px;
    background: var(--bg-alt);
    color: var(--primary);
    padding: 2px 10px;
    border-radius: 20px;
    font-weight: 600;
}

.discuss-text {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.7;
}

.discuss-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 10px;
}

.discuss-action {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 13px;
    color: var(--text-muted);
    transition: var(--transition);
}

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

/* ===== CTA ===== */
.cta-section {
    background: var(--dark-bg);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-3.png');
    background-size: cover;
    background-position: center;
    opacity: 0.2;
    pointer-events: none;
}

.cta-box {
    position: relative;
    z-index: 1;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    padding: 64px 48px;
    text-align: center;
    backdrop-filter: blur(12px);
}

.cta-box h2 {
    font-size: 34px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.cta-box p {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 32px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--dark-bg);
    color: rgba(255, 255, 255, 0.7);
    padding: 80px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 56px;
}

.footer-brand .footer-logo {
    font-size: 24px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.footer-brand .footer-logo .f-accent {
    color: var(--primary-light);
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.55);
    max-width: 320px;
}

.footer-col h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 12px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 28px;
    height: 3px;
    border-radius: 2px;
    background: var(--primary);
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col ul a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
}

.footer-col ul a:hover {
    color: #fff;
    padding-left: 4px;
}

.footer-col ul a i {
    font-size: 12px;
    color: var(--primary-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 24px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

.footer-bottom .domain-name {
    color: var(--primary-light);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .nav-toggle {
        display: flex;
    }

    .site-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px 24px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-150%);
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 999;
        align-items: stretch;
        border-bottom: 1px solid var(--border);
    }

    .site-nav.open {
        transform: translateY(0);
    }

    .site-nav a {
        padding: 14px 18px;
        border-radius: 12px;
        font-size: 16px;
        border-bottom: 1px solid var(--border);
    }

    .site-nav a:last-child {
        border-bottom: none;
    }

    .site-nav .nav-cta {
        margin: 12px 0 0;
        justify-content: center;
        border-bottom: none;
    }

    .hero-content h1 {
        font-size: 40px;
    }

    .section {
        padding: 80px 0;
    }

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

    .faq-layout {
        grid-template-columns: 1fr;
    }

    .faq-sidebar {
        position: static;
        flex-direction: row;
        flex-wrap: wrap;
    }

    .faq-sidebar .sidebar-card {
        flex: 1;
        min-width: 260px;
    }

    .process-step {
        margin-bottom: 20px;
    }
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 32px;
    }

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

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn-lg {
        width: 100%;
        max-width: 320px;
    }

    .section {
        padding: 64px 0;
    }

    .section-head {
        margin-bottom: 40px;
    }

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

    .cta-box {
        padding: 40px 24px;
    }

    .cta-box h2 {
        font-size: 26px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
        padding-bottom: 40px;
    }

    .stat-num {
        font-size: 40px;
    }

    .faq-answer-inner {
        padding: 0 20px 20px 60px;
    }
}

@media (max-width: 520px) {
    .container {
        padding: 0 16px;
    }

    .header-inner {
        gap: 8px;
    }

    .site-logo {
        font-size: 18px;
    }

    .site-nav a {
        font-size: 15px;
    }

    .hero-content {
        padding: 80px 16px;
    }

    .hero-content h1 {
        font-size: 28px;
    }

    .hero-badge {
        font-size: 12px;
        padding: 6px 14px;
    }

    .category-card {
        padding: 28px 24px;
        margin-bottom: 16px;
    }

    .faq-question {
        padding: 18px 16px;
        gap: 12px;
    }

    .faq-q-icon {
        width: 30px;
        height: 30px;
        font-size: 12px;
    }

    .faq-q-text {
        font-size: 14px;
    }

    .faq-answer-inner {
        padding: 0 16px 20px 50px;
    }

    .faq-answer-inner p {
        font-size: 14px;
    }

    .process-step {
        padding: 28px 20px;
    }

    .step-num {
        font-size: 34px;
    }

    .discuss-item {
        flex-direction: column;
        gap: 12px;
    }
}