/* roulang page: index */
:root {
  --c-primary: #1668b3;
  --c-primary-dark: #0f5a9c;
  --c-primary-deep: #0e4b8c;
  --c-amber: #f59e0b;
  --c-amber-dark: #d97706;
  --c-green: #0f9960;
  --c-ink: #1f2937;
  --c-gray: #6b7280;
  --c-soft: #f5f7fb;
  --c-line: #e5eaf1;
  --c-deep: #0d1f3c;
  --r-lg: 16px;
  --r-md: 12px;
  --r-sm: 8px;
  --shadow: 0 10px 30px rgba(18, 52, 103, 0.08);
  --shadow-hover: 0 16px 40px rgba(18, 52, 103, 0.14);
  --transition: 0.2s ease;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
*,
*::before,
*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--c-ink);
  background: #fff;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 10px 24px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1.4;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-amber { background: var(--c-amber); color: #1f2937; }
.btn-amber:hover { background: var(--c-amber-dark); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-outline-light {
  border-color: rgba(255,255,255,0.8);
  color: #fff;
  background: rgba(255,255,255,0.06);
}
.btn-outline-light:hover { background: rgba(255,255,255,0.16); transform: translateY(-1px); }
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-dark); transform: translateY(-1px); box-shadow: var(--shadow); }
.section { padding: 92px 0; }
.section-title { font-size: 30px; line-height: 1.4; font-weight: 800; color: #0b1c33; }
.section-sub { margin-top: 8px; color: var(--c-gray); font-size: 15px; }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 34px;
}
.section-head .more {
  color: var(--c-primary);
  font-size: 14px;
  font-weight: 600;
  flex-shrink: 0;
}
.section-head .more:hover { text-decoration: underline; }
.skip-link {
  position: fixed;
  left: -999px;
  top: 0;
  background: var(--c-deep);
  color: #fff;
  padding: 8px 20px;
  border-radius: 0 0 12px 0;
  z-index: 999;
}
.skip-link:focus { left: 0; }

/* Header */
.site-header {
  position: sticky;
  top: -36px;
  z-index: 120;
  background: rgba(255,255,255,0.95);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-line);
  box-shadow: 0 4px 24px rgba(18,52,103,0.04);
}
.topbar {
  height: 36px;
  background: var(--c-primary-deep);
  color: rgba(255,255,255,0.86);
  font-size: 12px;
  line-height: 36px;
}
.topbar-inner { display: flex; justify-content: space-between; align-items: center; }
.topbar a { color: #fff; font-weight: 500; opacity: 0.9; transition: var(--transition); }
.topbar a:hover { opacity: 1; }
.navbar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 76px;
}
.brand {
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.15;
  flex-shrink: 0;
}
.brand-main {
  font-size: 23px;
  font-weight: 800;
  color: var(--c-deep);
  letter-spacing: 0.4px;
}
.brand-sub {
  margin-top: 3px;
  font-size: 12px;
  color: var(--c-gray);
  letter-spacing: 1px;
}
.main-nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin: 0 auto;
}
.nav-link {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  color: #334155;
  transition: var(--transition);
}
.nav-link:hover { background: #eff5fd; color: var(--c-primary); }
.nav-link.active { background: rgba(22,104,179,0.10); color: var(--c-primary); }
.nav-cta { padding: 8px 20px; font-size: 14px; flex-shrink: 0; }
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  background: var(--c-soft);
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--c-deep); border-radius: 2px; transition: var(--transition); }
body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 640px;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #fff;
  background-color: #123e69;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/backpic/back-1.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-color: #123e69;
}
.hero-mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(7,30,62,0.94) 10%, rgba(13,54,105,0.72) 58%, rgba(13,54,105,0.28) 100%);
}
.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 56px;
  padding-top: 44px;
  padding-bottom: 44px;
}
.hero-copy { flex: 1; min-width: 0; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.22);
  font-size: 13px;
  color: rgba(255,255,255,0.92);
  margin-bottom: 20px;
}
.hero-tag::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #fbbf24;
  box-shadow: 0 0 0 4px rgba(251,191,36,0.14);
}
.hero h1 {
  font-size: 42px;
  line-height: 1.28;
  font-weight: 800;
  letter-spacing: 0.4px;
  max-width: 640px;
}
.hero-sub {
  margin-top: 18px;
  font-size: 17px;
  line-height: 1.75;
  color: rgba(255,255,255,0.92);
  max-width: 590px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.hero-trust {
  margin-top: 42px;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.18);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  font-size: 13px;
  color: rgba(255,255,255,0.78);
}
.hero-trust b { color: #fff; font-weight: 700; }
.hero-phone { flex-shrink: 0; width: 250px; position: relative; }
.mobile-frame {
  width: 230px;
  margin: 0 auto;
  aspect-ratio: 9 / 15.2;
  background: #fff;
  border-radius: 26px;
  padding: 10px;
  box-shadow: 0 36px 80px rgba(5,20,46,0.5);
  position: relative;
}
.mf-screen {
  width: 100%;
  height: 100%;
  min-height: 0;
  border-radius: 18px;
  overflow: hidden;
  position: relative;
  background: #d9e2ef;
}
.mf-screen img { width: 100%; height: 100%; object-fit: cover; }
.mf-top {
  position: absolute;
  left: 10px;
  right: 10px;
  top: 10px;
  padding: 8px 12px;
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(0,0,0,0.66), rgba(0,0,0,0));
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  z-index: 3;
}
.mf-play {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: rgba(245,158,11,0.92);
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3;
  box-shadow: 0 8px 22px rgba(0,0,0,0.24);
}
.mf-play::after {
  content: "";
  width: 0;
  height: 0;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  border-left: 13px solid #fff;
  margin-left: 4px;
}
.mf-hot {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(220,38,38,0.92);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 999px;
  z-index: 3;
}
.mf-tag {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 42px;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  text-shadow: 0 1px 10px rgba(0,0,0,0.7);
  z-index: 3;
}
.mf-bottom-bar {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  font-size: 10px;
  z-index: 3;
  text-shadow: 0 1px 8px rgba(0,0,0,0.7);
}
.mf-swipe { display: flex; flex-direction: column; gap: 5px; }
.mf-swipe i { display: block; width: 20px; height: 3px; border-radius: 3px; background: rgba(255,255,255,0.7); }
.mf-swipe i:last-child { width: 12px; margin-left: 8px; }

/* Viral block */
#viral-block { background: #fff; }
.viral-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.clip-card {
  background: #fff;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid #eef2f8;
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: block;
}
.clip-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.clip-media {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background-color: #b9c8da;
}
.clip-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.35s ease; }
.clip-card:hover .clip-media img { transform: scale(1.04); }
.clip-cat {
  position: absolute;
  left: 12px;
  top: 12px;
  color: #fff;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(22,104,179,0.92);
  z-index: 2;
}
.clip-hot {
  position: absolute;
  right: 12px;
  top: 12px;
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(21,28,38,0.55);
  z-index: 2;
}
.clip-play {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(245,158,11,0.84);
  transform: translate(-50%, -50%);
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.32;
  transition: var(--transition);
  box-shadow: 0 8px 20px rgba(0,0,0,0.18);
}
.clip-card:hover .clip-play { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
.clip-play::after {
  content: "";
  border-top: 7px solid transparent;
  border-bottom: 7px solid transparent;
  border-left: 12px solid #fff;
  margin-left: 4px;
}
.clip-body { padding: 16px 16px 18px; }
.clip-body h3 { font-size: 17px; line-height: 1.5; font-weight: 700; color: #12233d; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.clip-tags { margin-top: 8px; font-size: 13px; color: var(--c-gray); }

/* Pick section = editorial mixed */
.pick-section { background: var(--c-soft); }
.pick-layout { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(300px, 1fr); gap: 28px; align-items: start; }
.pick-main-card {
  background: #fff;
  border-radius: var(--r-lg);
  border: 1px solid var(--c-line);
  padding: 6px 26px;
  box-shadow: 0 4px 18px rgba(18,52,103,0.04);
}
.sub-block-title { display: flex; align-items: center; gap: 8px; font-size: 16px; font-weight: 800; color: var(--c-deep); padding: 18px 0 6px; }
.sub-block-title::before { content: ""; width: 4px; height: 16px; border-radius: 4px; background: var(--c-primary); }
.pick-item { display: flex; gap: 18px; padding: 20px 0; border-bottom: 1px solid #f0f2f6; }
.pick-item:last-child { border-bottom: none; }
.pick-thumb { width: 130px; height: 86px; flex-shrink: 0; overflow: hidden; border-radius: var(--r-md); background: #cbd8e8; }
.pick-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.pick-item:hover .pick-thumb img { transform: scale(1.05); }
.pick-info { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 6px; }
.pick-meta { font-size: 12px; color: var(--c-gray); display: flex; gap: 10px; }
.pick-meta b { color: var(--c-primary); font-weight: 600; }
.pick-item h3 { font-size: 17px; line-height: 1.5; font-weight: 700; color: #152b49; }
.pick-item p { font-size: 14px; color: var(--c-gray); line-height: 1.65; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.pick-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 4px; }
.pick-link {
  font-size: 13px;
  background: rgba(22,104,179,0.1);
  color: var(--c-primary);
  padding: 5px 14px;
  border-radius: 999px;
  font-weight: 600;
  transition: var(--transition);
}
.pick-link:hover { background: var(--c-primary); color: #fff; }

.hot-card {
  background: #fff;
  border-radius: var(--r-lg);
  border: 1px solid var(--c-line);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.hot-card-head {
  background: var(--c-deep);
  color: #fff;
  padding: 19px 22px;
}
.hot-card-head h3 { font-size: 17px; font-weight: 700; }
.hot-card-head p { font-size: 12px; color: rgba(255,255,255,0.66); margin-top: 3px; }
.hot-list { padding: 8px 0; }
.hot-list li { display: flex; align-items: center; gap: 12px; padding: 12px 22px; border-bottom: 1px solid #f2f5f9; transition: var(--transition); font-size: 14px; }
.hot-list li:last-child { border-bottom: none; }
.hot-list li:hover { background: #f8faff; }
.rank-num { color: var(--c-gray); font-size: 13px; width: 22px; font-weight: 700; }
.rank-num.top { color: var(--c-amber-dark); }
.hot-trend { margin-left: auto; color: var(--c-amber-dark); font-size: 12px; font-weight: 700; }
.hot-trend.down { color: var(--c-green); }
.hot-trend.flat { color: var(--c-gray); }
.hot-card-foot { padding: 12px 22px 18px; }
.hot-card-foot a { color: var(--c-primary); font-size: 13px; font-weight: 600; }

/* Latest */
#latest { background: var(--c-soft); }
.latest-list { display: flex; flex-direction: column; gap: 16px; }
.news-card {
  background: #fff;
  border-radius: var(--r-lg);
  border: 1px solid var(--c-line);
  overflow: hidden;
  display: flex;
  box-shadow: 0 4px 20px rgba(18,52,103,0.04);
  transition: var(--transition);
}
.news-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.news-thumb {
  width: 240px;
  flex-shrink: 0;
  overflow: hidden;
  background: #c8d6e6;
  position: relative;
}
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.35s ease; }
.news-card:hover .news-thumb img { transform: scale(1.04); }
.news-body { padding: 20px 22px 16px; flex: 1; min-width: 0; display: flex; flex-direction: column; }
.news-body h3 { font-size: 19px; line-height: 1.5; font-weight: 700; color: #10253e; }
.news-summary { color: var(--c-gray); font-size: 14px; line-height: 1.7; margin-top: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-body .meta-row { display: flex; align-items: center; gap: 10px; margin-top: auto; padding-top: 14px; border-top: 1px solid #f0f2f6; color: var(--c-gray); font-size: 13px; }
.news-cat { color: var(--c-primary); background: rgba(22,104,179,0.08); padding: 2px 10px; border-radius: 999px; font-weight: 600; }
.cms-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 50px 24px;
  background: #fff;
  border-radius: var(--r-lg);
  border: 1px dashed #cfd9e6;
  color: var(--c-gray);
  font-size: 14px;
}
.cms-empty::before {
  content: "ℹ";
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--c-soft);
  color: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 12px;
}

/* Proof */
.proof { background: var(--c-soft); }
.proof-layout { display: grid; grid-template-columns: 0.9fr 1.4fr 0.95fr; gap: 20px; align-items: stretch; }
.proof-col { display: flex; flex-direction: column; gap: 18px; }
.proof-item {
  background: #fff;
  border-radius: var(--r-lg);
  border: 1px solid var(--c-line);
  padding: 20px 20px 18px;
  box-shadow: 0 4px 18px rgba(18,52,103,0.04);
}
.proof-item.quote-long { padding: 28px 28px 22px; display: flex; flex-direction: column; }
.proof-text { position: relative; color: #31465f; font-size: 15px; line-height: 1.75; }
.quote-long .proof-text { font-size: 17px; }
.proof-text::before { content: "“"; color: var(--c-primary); font-size: 42px; position: absolute; top: -16px; left: -8px; opacity: 0.48; font-family: Georgia, serif; }
.proof-user { display: flex; align-items: center; gap: 12px; margin-top: 16px; }
.avatar { width: 40px; height: 40px; border-radius: 50%; flex-shrink: 0; color: #fff; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.avatar.blue { background: var(--c-primary); }
.avatar.green { background: #2f9e77; }
.avatar.amber { background: #d9860a; }
.proof-name { font-weight: 700; font-size: 14px; color: #10202f; }
.proof-meta { font-size: 12px; color: var(--c-gray); margin-top: 2px; }
.verify { display: inline-block; margin-left: 6px; color: var(--c-green); font-weight: 700; font-size: 12px; border: 1px solid rgba(15,153,96,0.24); padding: 0 8px; border-radius: 999px; background: rgba(15,153,96,0.06); }
.stars { color: #f5a623; letter-spacing: 4px; font-size: 17px; margin-top: 14px; display: flex; align-items: center; gap: 10px; }
.proof-digital {
  background: #fff;
  border-radius: var(--r-lg);
  border: 1px solid var(--c-line);
  padding: 22px 20px;
  text-align: center;
  box-shadow: var(--shadow);
}
.digital-number { font-size: 38px; font-weight: 800; color: var(--c-primary); line-height: 1.2; }
.digital-label { font-size: 13px; color: var(--c-gray); margin-top: 4px; }
.proof-mini.stats { display: flex; gap: 8px; margin-top: 14px; }
.stat-chip { flex: 1; background: var(--c-soft); border-radius: 12px; padding: 10px 6px; font-size: 13px; color: var(--c-ink); line-height: 1.4; }
.stat-chip b { display: block; font-size: 20px; color: var(--c-deep); }

/* CTA Band */
.cta-band {
  background: linear-gradient(105deg, #eaf2fb 0%, #ffffff 70%);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-inner { max-width: 820px; margin: 0 auto; }
.cta-inner h2 { font-size: 28px; font-weight: 800; color: #0b1d35; }
.cta-inner p { margin-top: 10px; color: #314d66; font-size: 15px; }
.cta-btns { display: flex; justify-content: center; gap: 16px; margin-top: 26px; flex-wrap: wrap; }

/* FAQ */
.faq { background: #fff; }
.faq-wrap { max-width: 840px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item { border-radius: var(--r-lg); background: var(--c-soft); border-left: 4px solid var(--c-primary); overflow: hidden; }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  font-size: 16px;
  font-weight: 600;
  color: #133653;
  transition: var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--c-primary); }
.faq-icon { flex-shrink: 0; width: 24px; height: 24px; border-radius: 50%; background: rgba(22,104,179,0.1); color: var(--c-primary); display: flex; align-items: center; justify-content: center; font-weight: 700; transition: var(--transition); }
.faq-item details[open] .faq-icon { transform: rotate(45deg); background: var(--c-primary); color: #fff; }
.faq-a { padding: 0 20px 20px; color: var(--c-gray); font-size: 14px; line-height: 1.75; }

/* Footer */
.site-footer { background: var(--c-deep); color: rgba(255,255,255,0.66); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.1fr 1.2fr; gap: 34px; padding: 56px 0 40px; }
.footer-brand .brand-main { color: #fff; font-size: 23px; font-weight: 800; }
.footer-brand .brand-sub { color: rgba(255,255,255,0.42); font-size: 12px; }
.footer-intro { margin-top: 12px; font-size: 13px; line-height: 1.8; color: rgba(255,255,255,0.55); }
.site-footer h4 { color: rgba(255,255,255,0.92); font-size: 15px; margin-bottom: 14px; font-weight: 700; }
.site-footer ul { display: flex; flex-direction: column; gap: 9px; }
.site-footer ul a, .site-footer p { color: rgba(255,255,255,0.55); font-size: 13px; transition: var(--transition); }
.site-footer ul a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 15px 0;
  font-size: 12px;
  color: rgba(255,255,255,0.48);
}
.footer-bottom .container { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.footer-url { color: rgba(255,255,255,0.55); }
.footer-url:hover { color: #fff; }

/* Responsive */
@media (max-width: 1079px) {
  .viral-grid { grid-template-columns: repeat(2, 1fr); }
  .pick-layout { grid-template-columns: 1fr; }
  .nav-cta { display: none; }
  .hero h1 { font-size: 38px; }
  .hero-phone { width: 220px; }
  .mobile-frame { width: 200px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .hero-phone { display: none; }
  .hero { min-height: 86vh; }
  .hero-inner { padding-top: 60px; padding-bottom: 60px; }
  .proof-layout { grid-template-columns: 1fr 1fr; }
  .proof-col.mid { grid-column: 1 / -1; order: -1; }
}
@media (max-width: 767px) {
  .section { padding: 60px 0; }
  .topbar-inner span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .navbar { height: 64px; }
  .brand-main { font-size: 20px; }
  .brand-sub { font-size: 11px; }
  .main-nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    left: 16px;
    right: 16px;
    z-index: 90;
    background: #fff;
    border-radius: 16px;
    box-shadow: var(--shadow-hover);
    padding: 10px;
    flex-direction: column;
    align-items: stretch;
    text-align: left;
  }
  body.nav-open .main-nav-links { display: flex; }
  .nav-link { padding: 12px 16px; border-radius: 10px; }
  .nav-toggle { display: inline-flex; }
  .hero { min-height: 72vh; }
  .hero h1 { font-size: 30px; }
  .hero-sub { font-size: 15px; }
  .hero-actions .btn { width: 100%; }
  .hero-trust { display: none; }
  .section-title { font-size: 25px; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 8px; }
  .viral-grid { grid-template-columns: 1fr; }
  .pick-item { flex-direction: column; }
  .pick-item .pick-thumb { width: 100%; height: 140px; }
  .news-card { flex-direction: column; }
  .news-thumb { width: 100%; height: 160px; }
  .proof-layout { grid-template-columns: 1fr; }
  .proof-col.mid { grid-column: auto; order: 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .cta-inner h2 { font-size: 24px; }
  .cta-btns .btn { width: 100%; }
  .faq-item summary { font-size: 15px; }
}
@media (max-width: 480px) {
  .container { padding-left: 20px; padding-right: 20px; }
  .topbar { font-size: 11px; }
  .topbar a { display: none; }
  .topbar-inner { justify-content: center; }
  .hero h1 { font-size: 26px; }
  .section-title { font-size: 23px; }
}

/* roulang page: article */
:root {
  --blue: #1668b3;
  --blue-deep: #0e4b8c;
  --blue-soft: #eef5ff;
  --navy: #0d1f3c;
  --navy-top: #0e3e6b;
  --amber: #f59e0b;
  --amber-dark: #d97706;
  --green: #0f9960;
  --ink: #1f2937;
  --muted: #6b7280;
  --light-bg: #f5f7fb;
  --line: #e7edf5;
  --white: #ffffff;
  --shadow: 0 10px 30px rgba(18, 52, 103, 0.08);
  --shadow-hover: 0 16px 40px rgba(18, 52, 103, 0.14);
  --radius: 16px;
  --radius-sm: 8px;
  --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --transition: 0.2s ease;
  --container: 1200px;
}

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

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

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--white);
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: var(--blue);
}

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

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

ul,
ol {
  list-style: none;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1.2;
  padding: 12px 24px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn:focus-visible,
.nav-link:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(22, 104, 179, 0.28);
  outline-offset: 2px;
}

.btn-amber {
  background: var(--amber);
  color: #fff;
  box-shadow: 0 6px 18px rgba(245, 158, 11, 0.24);
}

.btn-amber:hover {
  background: var(--amber-dark);
  color: #fff;
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.32);
}

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

.btn-outline:hover {
  background: var(--blue);
  color: #fff;
}

.btn-lg {
  padding: 15px 32px;
  font-size: 16px;
}

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1200;
  width: 100%;
  height: 3px;
  pointer-events: none;
  background: transparent;
}

.reading-progress span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--amber), var(--blue));
  transition: width 0.08s linear;
}

.site-header {
  position: relative;
  z-index: 100;
}

.topbar {
  background: var(--navy-top);
  color: rgba(255, 255, 255, 0.92);
  font-size: 13px;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 36px;
}

.topbar-inner a {
  color: #ffffff;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: border var(--transition), color var(--transition);
}

.topbar-inner a:hover {
  color: #fff;
  border-bottom-color: rgba(255, 255, 255, 0.7);
}

.sticky-nav {
  position: sticky;
  top: 0;
  background: #fff;
  border-bottom: 1px solid transparent;
  transition: background 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.sticky-nav.is-scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom-color: var(--line);
  box-shadow: 0 6px 18px rgba(18, 52, 103, 0.06);
}

.navbar {
  display: flex;
  align-items: center;
  min-height: 76px;
  gap: 28px;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
  line-height: 1.1;
  flex-shrink: 0;
}

.brand-main {
  font-size: 22px;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: 0.2px;
}

.brand-sub {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 1px;
}

.main-nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  color: #33415c;
  font-weight: 500;
  font-size: 15px;
  padding: 10px 2px;
  transition: color var(--transition);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--blue);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.2s ease;
}

.nav-link:hover {
  color: var(--blue);
}

.nav-link.active {
  color: var(--blue);
}

.nav-link.active::after {
  transform: scaleX(1);
}

.nav-cta {
  margin-left: auto;
  font-size: 14px;
  padding: 11px 20px;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 12px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  margin-left: auto;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  display: none;
  background: #fff;
  border-top: 1px solid var(--line);
  padding: 12px 20px 24px;
  box-shadow: 0 20px 30px rgba(18, 52, 103, 0.08);
}

.mobile-menu.open {
  display: block;
}

.mobile-menu a {
  display: block;
  padding: 12px 8px;
  font-weight: 500;
  color: var(--ink);
  border-radius: 10px;
}

.mobile-menu a:hover {
  background: var(--light-bg);
  color: var(--blue);
}

.mobile-menu .btn {
  margin-top: 10px;
  width: 100%;
}

.article-breadcrumb {
  background: #f8fafc;
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
  font-size: 13px;
  color: var(--muted);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  max-width: 820px;
  margin: 0 auto;
  padding: 0 24px;
}

.breadcrumb-list a {
  color: var(--muted);
  transition: color var(--transition);
}

.breadcrumb-list a:hover {
  color: var(--blue);
}

.breadcrumb-list .current {
  color: var(--ink);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 280px;
}

.breadcrumb-list .sep {
  color: #b8c2d0;
}

.article-main {
  background: #fff;
  padding: 48px 0 72px;
}

.article-header {
  max-width: 820px;
  margin: 0 auto 36px;
  padding: 0 24px;
}

.article-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--amber);
  color: #fff;
  border-radius: 999px;
  padding: 5px 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.article-header h1 {
  font-size: 32px;
  line-height: 1.35;
  color: #101828;
  font-weight: 800;
  margin: 18px 0 14px;
  letter-spacing: 0.2px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 26px;
  color: var(--muted);
  font-size: 14px;
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-meta .meta-divider {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #c3cede;
}

.article-layout {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 200px;
  gap: 44px;
  align-items: start;
}

.article-body {
  max-width: 820px;
  min-width: 0;
}

.article-content {
  font-size: 17px;
  line-height: 1.85;
  color: #243b53;
  word-break: break-word;
  letter-spacing: 0.2px;
}

.article-content p {
  margin: 1.2em 0;
}

.article-content h2,
.article-content h3,
.article-content h4 {
  color: var(--navy);
  font-weight: 700;
  line-height: 1.4;
  margin: 1.8em 0 0.8em;
}

.article-content h2 {
  font-size: 25px;
  border-left: 4px solid var(--blue);
  padding-left: 14px;
}

.article-content h3 {
  font-size: 20px;
}

.article-content a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-content img,
.article-content video {
  max-width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  margin: 24px 0 8px;
}

.article-content figure {
  margin: 24px 0;
}

.article-content figure img {
  margin-bottom: 8px;
}

.article-content figcaption {
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

.article-content blockquote {
  margin: 24px 0;
  padding: 14px 20px;
  border-left: 4px solid var(--blue);
  background: var(--blue-soft);
  border-radius: 0 10px 10px 0;
  font-size: 15px;
  color: #33415c;
  line-height: 1.7;
}

.article-content ul,
.article-content ol {
  margin: 1.2em 0;
  padding-left: 1.6em;
}

.article-content ul li {
  list-style: disc;
  margin: 0.45em 0;
}

.article-content ol li {
  list-style: decimal;
  margin: 0.45em 0;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}

.article-content th,
.article-content td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
}

.article-content th {
  background: var(--light-bg);
  font-weight: 600;
}

.article-footer-note {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--muted);
}

.article-toc {
  position: sticky;
  top: 100px;
  border: 1px solid var(--line);
  background: #f8fafc;
  border-radius: 14px;
  padding: 18px 18px 14px;
  font-size: 14px;
}

.article-toc h4 {
  font-size: 14px;
  color: var(--navy);
  font-weight: 700;
  margin-bottom: 8px;
}

.toc-nav a {
  display: block;
  color: var(--muted);
  font-size: 13px;
  padding: 4px 0;
  line-height: 1.45;
  border-left: 2px solid transparent;
  padding-left: 8px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.toc-nav a:hover {
  color: var(--blue);
  border-left-color: var(--blue);
}

.toc-nav a.toc-h3 {
  padding-left: 20px;
  font-size: 12px;
}

.article-empty-wrap {
  min-height: 55vh;
  display: flex;
  align-items: center;
  padding: 80px 0;
}

.empty-card {
  max-width: 680px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 48px 40px;
  text-align: center;
}

.empty-card .empty-code {
  display: block;
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--amber);
  font-weight: 700;
}

.empty-card h1 {
  font-size: 28px;
  color: var(--navy);
  margin: 12px 0;
  font-weight: 800;
}

.empty-card p {
  color: var(--muted);
  margin-bottom: 28px;
}

.empty-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

.related-section {
  background: var(--light-bg);
  padding: 72px 0;
}

.related-section .section-top {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.related-section h2 {
  font-size: 26px;
  color: var(--navy);
  font-weight: 800;
  margin: 0;
}

.related-section .section-top p {
  color: var(--muted);
  font-size: 14px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.related-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.related-card:active {
  transform: translateY(0);
}

.related-card-cover {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #dfe6f0;
}

.related-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.2s ease;
}

.related-card:hover .related-card-cover img {
  transform: scale(1.03);
}

.related-card-tag {
  position: absolute;
  left: 14px;
  top: 14px;
  background: rgba(13, 31, 60, 0.68);
  color: #fff;
  border-radius: 999px;
  font-size: 12px;
  padding: 4px 10px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.related-card-body {
  padding: 18px 18px 14px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.related-card-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.5;
  margin-bottom: 10px;
}

.related-card-body .related-meta {
  margin-top: auto;
  font-size: 13px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 8px;
}

.related-card-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}

.related-bottom {
  text-align: center;
  margin-top: 32px;
}

.article-cta {
  background: linear-gradient(120deg, #176fc1, #0e4b8c);
  padding: 72px 24px;
  color: #fff;
}

.article-cta .container {
  max-width: 900px;
  text-align: center;
}

.article-cta h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 12px;
  color: #fff;
}

.article-cta p {
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 28px;
  font-size: 15px;
}

.cta-action {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

.btn-white {
  background: #fff;
  color: var(--blue-deep);
  font-weight: 700;
}

.btn-white:hover {
  background: #f0f6ff;
  color: var(--blue-deep);
}

.btn-outline-light {
  border-color: rgba(255, 255, 255, 0.85);
  color: #fff;
  background: transparent;
}

.btn-outline-light:hover {
  background: #fff;
  color: var(--blue-deep);
  border-color: #fff;
}

.site-footer {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.7);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding: 72px 24px 48px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.footer-brand .brand-main {
  color: #fff;
  font-size: 22px;
}

.footer-brand .brand-sub {
  color: rgba(255, 255, 255, 0.55);
}

.footer-intro {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
  max-width: 260px;
}

.footer-title {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 16px;
  font-weight: 600;
}

.footer-list li {
  margin-bottom: 8px;
}

.footer-list a {
  color: rgba(255, 255, 255, 0.55);
  font-size: 14px;
  transition: color 0.2s ease;
}

.footer-list a:hover {
  color: #fff;
}

.footer-note {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  line-height: 1.8;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom .container {
  min-height: 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
}

.footer-url {
  color: rgba(255, 255, 255, 0.75);
  transition: color 0.2s ease;
}

.footer-url:hover {
  color: #fff;
}

@media (max-width: 1079px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 900px) {
  .navbar {
    gap: 18px;
  }

  .main-nav-links {
    gap: 18px;
  }

  .nav-link {
    font-size: 14px;
  }
}

@media (max-width: 767px) {
  .topbar-inner {
    font-size: 12px;
  }

  .navbar {
    min-height: 68px;
  }

  .main-nav-links {
    display: none;
  }

  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .brand-main {
    font-size: 20px;
  }

  .article-main {
    padding: 36px 0 56px;
  }

  .article-header h1 {
    font-size: 26px;
  }

  .article-layout {
    grid-template-columns: 1fr;
    padding: 0 20px;
  }

  .article-toc {
    display: none;
  }

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

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

  .article-cta {
    padding: 56px 20px;
  }

  .article-cta h2 {
    font-size: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 56px 20px 32px;
  }

  .footer-bottom .container {
    justify-content: center;
    padding: 14px 20px;
  }

  .empty-card {
    padding: 36px 24px;
  }
}

@media (max-width: 479px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .breadcrumb-list {
    padding: 0 20px;
  }

  .article-header {
    padding: 0 20px;
  }

  .article-header h1 {
    font-size: 24px;
  }

  .article-layout {
    padding: 0 20px;
  }

  .article-meta {
    font-size: 13px;
    gap: 10px 16px;
  }

  .brand-main {
    font-size: 19px;
  }

  .topbar-inner > span {
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .related-card-body h3 {
    font-size: 16px;
  }

  .related-section .section-top {
    align-items: flex-start;
  }

  .btn-lg {
    width: 100%;
  }

  .cta-action {
    flex-direction: column;
    width: 100%;
  }

  .cta-action .btn {
    width: 100%;
  }
}

/* roulang page: category1 */
:root {
  --primary: #1668b3;
  --primary-dark: #0f5a9c;
  --primary-deep: #0d1f3c;
  --navy: #0e3e6b;
  --heading: #1f2937;
  --text: #3f4a5a;
  --muted: #6b7280;
  --bg: #ffffff;
  --bg-soft: #f5f7fb;
  --amber: #f59e0b;
  --amber-dark: #d97706;
  --green: #0f9960;
  --border: #e6edf5;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --radius: 16px;
  --radius-sm: 8px;
  --shadow: 0 10px 30px rgba(18, 52, 103, 0.08);
  --shadow-lg: 0 16px 40px rgba(18, 52, 103, 0.14);
  --container: 1200px;
  --spacer: 90px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, p, ul, figure { margin: 0; }
ul { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; border: none; background: none; }
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
[id] { scroll-margin-top: 110px; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  border: 2px solid transparent;
  transition: all 0.2s ease;
}
.btn-amber {
  background: var(--amber);
  color: #1a1a1a;
  box-shadow: 0 10px 24px rgba(245, 158, 11, 0.25);
}
.btn-amber:hover { background: var(--amber-dark); color: #fff; transform: translateY(-2px); }
.btn-amber:active { transform: translateY(0); }
.btn-outline-light {
  border-color: rgba(255,255,255,0.8);
  color: #fff;
  background: rgba(255,255,255,0.06);
}
.btn-outline-light:hover { background: rgba(255,255,255,0.18); border-color: #fff; transform: translateY(-2px); }
.btn-ghost {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-ghost:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn:focus-visible, .filter-pill:focus-visible, .nav-toggle:focus-visible, a:focus-visible {
  outline: 3px solid rgba(22, 104, 179, 0.4);
  outline-offset: 2px;
}

/* 顶部信息条 */
.topbar {
  height: 36px;
  background: var(--navy);
  color: rgba(255,255,255,0.82);
  font-size: 12px;
  line-height: 36px;
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; }
.topbar-inner a {
  color: #f7c46a;
  font-weight: 500;
  padding-left: 18px;
  border-left: 1px solid rgba(255,255,255,0.2);
}
.topbar-inner a:hover { color: #fff; }

/* 主导航 */
.site-header { position: relative; z-index: 90; }
.navbar {
  position: sticky;
  top: 0;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  flex-shrink: 0;
}
.brand-main {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.4px;
}
.brand-sub {
  margin-top: 5px;
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
}
.main-nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-link {
  position: relative;
  font-size: 16px;
  font-weight: 600;
  color: var(--heading);
  padding: 8px 0;
  transition: color 0.2s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 3px;
  border-radius: 3px;
  background: var(--amber);
  transition: width 0.2s ease;
}
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); }
.nav-link.active::after { width: 100%; }
.nav-cta { padding: 9px 22px; font-size: 14px; flex-shrink: 0; }
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
}
.nav-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
}

/* 分类横幅 */
.cat-banner {
  position: relative;
  isolation: isolate;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  min-height: 360px;
  display: flex;
  align-items: center;
  padding: 90px 0;
}
.cat-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, rgba(13,31,60,0.88) 0%, rgba(14,75,140,0.72) 62%, rgba(23,111,193,0.42) 100%);
}
.cat-banner-inner { max-width: 760px; }
.cat-eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(255,255,255,0.16);
  border: 1px solid rgba(255,255,255,0.28);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 22px;
  backdrop-filter: blur(4px);
}
.cat-banner h1 {
  color: #fff;
  font-size: 40px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin-bottom: 18px;
}
.cat-banner .lead {
  color: rgba(255,255,255,0.88);
  font-size: 17px;
  line-height: 1.8;
  max-width: 650px;
  margin-bottom: 32px;
}
.banner-actions { display: flex; flex-wrap: wrap; gap: 16px; }

/* 分类胶囊 */
.filter-wrap {
  position: relative;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}
.filter-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.filter-inner .filter-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--muted);
  margin-right: 6px;
}
.filter-pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  border-radius: 999px;
  border: 1px solid #d7e2ee;
  background: #fff;
  font-size: 14px;
  font-weight: 600;
  color: var(--heading);
  transition: all 0.2s ease;
}
.filter-pill:hover { border-color: var(--primary); color: var(--primary); background: #f0f7ff; }
.filter-pill.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 8px 20px rgba(22,104,179,0.18);
}

/* 主体网格 */
.topic-shelf { padding-top: 72px; padding-bottom: 30px; }
.topic-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 34px;
}
.topic-head h2 {
  font-size: 30px;
  color: var(--heading);
  font-weight: 800;
  line-height: 1.3;
}
.topic-head p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 15px;
}
.topic-actions { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }
.text-link {
  color: var(--primary);
  font-weight: 700;
  font-size: 14px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.text-link:hover { border-color: var(--primary); }

.content-split {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 30px;
  align-items: start;
}
.split-main { min-width: 0; }
.side-rail { display: flex; flex-direction: column; gap: 22px; position: sticky; top: 110px; }

/* 分组 */
.group-block {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 26px;
  margin-bottom: 22px;
  box-shadow: 0 4px 16px rgba(18,52,103,0.04);
}
.group-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.group-title .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--primary);
}
.group-title h3 {
  font-size: 19px;
  font-weight: 800;
  color: var(--heading);
}
.group-title small {
  margin-left: auto;
  font-size: 13px;
  color: var(--muted);
}

/* 资讯行 */
.topic-row {
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 18px 0;
  border-top: 1px solid #eef2f7;
  transition: background 0.2s ease;
}
.topic-row:first-of-type { border-top: 0; }
.topic-row:hover { background: #fafcfe; }
.topic-thumb {
  width: 190px;
  height: 116px;
  flex-shrink: 0;
  border-radius: 12px;
  object-fit: cover;
  background: #e2eaf3;
  box-shadow: 0 6px 14px rgba(18,52,103,0.08);
}
.topic-info { min-width: 0; flex: 1; }
.topic-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 7px;
}
.topic-tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 999px;
  background: #eaf3fc;
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
}
.topic-tag.hot {
  background: #fdf1d7;
  color: #b45309;
}
.topic-tag.blue {
  background: #e9f5ee;
  color: #0c7a4b;
}
.topic-info h4 {
  font-size: 17px;
  line-height: 1.5;
  color: var(--heading);
  font-weight: 700;
  margin-bottom: 6px;
}
.topic-info p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.topic-note {
  flex-shrink: 0;
  text-align: right;
  font-size: 13px;
  color: var(--muted);
  padding-left: 14px;
  border-left: 1px solid #edf1f6;
}
.topic-note span { display: block; }
.topic-note .arrow { color: var(--primary); font-weight: 700; }

/* 侧栏 */
.side-block {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  box-shadow: var(--shadow);
}
.side-block h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--heading);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--bg-soft);
}
.update-line li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 9px 0;
  border-bottom: 1px dashed #e8edf4;
  font-size: 13px;
}
.update-line li:last-child { border-bottom: 0; }
.update-line time {
  color: var(--primary);
  font-weight: 700;
  flex-shrink: 0;
  font-size: 12px;
  padding-top: 2px;
}
.update-line p { color: var(--text); }

.hot-rank li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed #e8edf4;
}
.hot-rank li:last-child { border-bottom: 0; }
.rank-num {
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: #eef4fb;
  font-weight: 800;
  font-size: 13px;
  color: var(--primary);
  flex-shrink: 0;
}
.rank-name { flex: 1; font-size: 14px; font-weight: 600; color: var(--heading); }
.rank-trend { font-size: 12px; color: var(--green); font-weight: 700; }
.rank-trend.down { color: #c05621; }
.rank-value { font-size: 14px; font-weight: 800; color: var(--heading); }

.editor-pick li { display: flex; align-items: center; gap: 12px; padding: 13px 0; border-bottom: 1px solid #edf1f7; }
.editor-pick li:last-child { border-bottom: 0; padding-bottom: 0; }
.pick-number {
  font-size: 14px;
  font-weight: 800;
  color: var(--amber);
  font-style: normal;
  font-family: Georgia, "Times New Roman", serif;
}
.editor-pick a { font-size: 14px; font-weight: 600; color: var(--heading); transition: color 0.2s ease; }
.editor-pick a:hover { color: var(--primary); }

/* 数据条 */
.stat-band {
  background: var(--bg-soft);
  padding-top: 64px;
  padding-bottom: 64px;
}
.stat-band .section-title {
  text-align: center;
  font-size: 28px;
  font-weight: 800;
  color: var(--heading);
  margin-bottom: 8px;
}
.stat-band .section-sub {
  text-align: center;
  color: var(--muted);
  margin-bottom: 36px;
  font-size: 15px;
}
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.stat-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  box-shadow: 0 6px 18px rgba(18,52,103,0.05);
  transition: all 0.2s ease;
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.stat-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
}
.stat-label { font-size: 14px; color: var(--muted); margin-top: 8px; }

/* 转化条 */
.cta-soft {
  background: linear-gradient(135deg, #eaf2fb, #ffffff 68%);
  padding: 80px 4%;
}
.cta-box {
  max-width: 1100px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid #dce8f5;
  border-radius: 24px;
  padding: 54px 60px;
  box-shadow: 0 20px 50px rgba(18,52,103,0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.cta-box h2 {
  font-size: 24px;
  font-weight: 800;
  color: var(--heading);
  line-height: 1.4;
  margin-bottom: 10px;
}
.cta-box p { color: var(--muted); }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; flex-shrink: 0; }

/* FAQ */
.faq-section {
  padding: 90px 0;
  background: #fff;
}
.faq-section .faq-heading {
  text-align: center;
  font-size: 30px;
  font-weight: 800;
  color: var(--heading);
  margin-bottom: 10px;
}
.faq-section .faq-sub {
  text-align: center;
  color: var(--muted);
  margin-bottom: 40px;
}
.faq-list { max-width: 850px; margin: 0 auto; }
.faq-item {
  background: var(--bg-soft);
  border-radius: var(--radius);
  border-left: 4px solid var(--primary);
  padding: 20px 26px;
  margin-bottom: 16px;
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  color: var(--heading);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 24px;
  font-weight: 300;
  color: var(--primary);
  line-height: 1;
  transition: transform 0.2s ease;
}
.faq-item[open] summary::after { content: "–"; }
.faq-item .faq-answer {
  font-size: 14px;
  color: var(--text);
  line-height: 1.75;
  padding-top: 14px;
  border-top: 1px dashed #d7e1ec;
  margin-top: 14px;
}

/* 页脚 */
.site-footer {
  background: var(--primary-deep);
  padding: 70px 0 0;
  color: rgba(255,255,255,0.72);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr 1fr 1fr;
  gap: 44px;
  margin-bottom: 52px;
}
.footer-grid h4 {
  color: rgba(255,255,255,0.9);
  font-size: 15px;
  margin-bottom: 14px;
}
.footer-grid ul li { margin-bottom: 9px; }
.footer-grid ul a, .footer-grid p { font-size: 13px; line-height: 1.8; }
.footer-grid ul a:hover { color: #fff; }
.footer-brand .brand-main { color: #fff; font-size: 22px; font-weight: 800; }
.footer-brand .brand-sub { margin-top: 6px; color: rgba(255,255,255,0.55); }
.footer-intro { margin-top: 16px; font-size: 13px; color: rgba(255,255,255,0.62); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 18px 0;
  font-size: 12px;
  color: rgba(255,255,255,0.48);
}
.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  flex-wrap: wrap;
}
.footer-url { color: rgba(255,255,255,0.62); }
.footer-url:hover { color: #fff; text-decoration: underline; }

/* 响应式 */
@media (max-width: 1079px) {
  :root { --spacer: 64px; }
  .content-split { grid-template-columns: 1fr; }
  .side-rail {
    position: static;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }
  .side-block { padding: 20px; }
  .cta-box { flex-direction: column; align-items: flex-start; padding: 40px; }
}
@media (max-width: 768px) {
  .container { padding-left: 20px; padding-right: 20px; }
  .topbar-inner span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .navbar { height: auto; min-height: 66px; flex-wrap: wrap; padding-top: 10px; padding-bottom: 10px; }
  .brand { margin-right: auto; }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .main-nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 16px 0 12px;
    border-top: 1px solid var(--border);
    margin-top: 6px;
  }
  .navbar.nav-open .main-nav-links { display: flex; }
  .nav-link { width: 100%; padding: 10px 0; border-bottom: 1px dashed #eef2f7; }
  .cat-banner { padding: 70px 0; min-height: 420px; }
  .cat-banner h1 { font-size: 29px; }
  .cat-banner .lead { font-size: 15px; }
  .topic-shelf { padding-top: 48px; }
  .topic-head { flex-direction: column; align-items: flex-start; }
  .topic-row { flex-wrap: wrap; padding: 16px 0; }
  .topic-thumb { width: 100%; height: 170px; }
  .topic-note { display: none; }
  .side-rail { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .cta-box { padding: 30px 22px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .faq-section { padding: 56px 0; }
}
@media (max-width: 480px) {
  .topbar-inner a { display: none; }
  .brand-main { font-size: 19px; }
  .cat-banner h1 { font-size: 24px; }
  .cat-banner .lead { font-size: 14px; }
  .filter-pill { padding: 7px 15px; font-size: 13px; }
  .topic-head h2 { font-size: 24px; }
  .group-block { padding: 18px; }
  .stat-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom .container { justify-content: center; text-align: center; }
}

/* roulang page: category2 */
:root {
      --primary: #1668b3;
      --primary-dark: #0e4b8c;
      --primary-darker: #0b3c74;
      --navy: #0d1f3c;
      --navy-deep: #071a33;
      --amber: #d97706;
      --amber-dark: #b85c05;
      --amber-bright: #f59e0b;
      --green: #0f9960;
      --text: #1f2937;
      --muted: #6b7280;
      --border: #e5eaf1;
      --bg-gray: #f5f7fb;
      --bg-blue-light: #eef5ff;
      --white: #ffffff;
      --shadow-sm: 0 6px 16px rgba(18, 52, 103, 0.06);
      --shadow-md: 0 10px 30px rgba(18, 52, 103, 0.08);
      --shadow-lg: 0 16px 40px rgba(18, 52, 103, 0.14);
      --radius: 16px;
      --radius-sm: 10px;
      --radius-lg: 22px;
      --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
      --ease: 0.2s ease;
    }

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

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

    body {
      font-family: var(--font);
      color: var(--text);
      background: var(--white);
      line-height: 1.75;
      font-size: 16px;
    }

    body.no-scroll {
      overflow: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--ease), background var(--ease), border-color var(--ease), box-shadow var(--ease);
    }

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

    button,
    input,
    textarea,
    select,
    summary {
      font: inherit;
      color: inherit;
    }

    ul,
    ol {
      list-style: none;
    }

    h1,
    h2,
    h3,
    h4,
    h5 {
      font-weight: 800;
      line-height: 1.3;
      color: var(--navy);
    }

    h1 {
      font-size: 40px;
      letter-spacing: -0.02em;
    }

    h2 {
      font-size: 30px;
      letter-spacing: -0.01em;
    }

    h3 {
      font-size: 20px;
    }

    p {
      text-wrap: pretty;
    }

    .container {
      width: min(1200px, 100% - 48px);
      margin-left: auto;
      margin-right: auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 120;
      width: 100%;
    }

    .topbar {
      background: #0e3e6b;
      color: rgba(255, 255, 255, 0.86);
      font-size: 12px;
      height: 36px;
      overflow: hidden;
    }

    .topbar-inner {
      height: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }

    .topbar-inner a {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #fff;
      font-weight: 600;
    }

    .topbar-inner a:hover {
      color: var(--amber-bright);
    }

    .navbar {
      display: flex;
      align-items: center;
      gap: 28px;
      min-height: 76px;
      background: rgba(255, 255, 255, 0.97);
      -webkit-backdrop-filter: blur(10px);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(229, 234, 241, 0.9);
      transition: box-shadow var(--ease);
    }

    .site-header.is-scrolled .navbar {
      box-shadow: 0 8px 26px rgba(13, 31, 60, 0.07);
    }

    .brand {
      display: flex;
      flex-direction: column;
      line-height: 1.18;
      flex-shrink: 0;
    }

    .brand-main {
      font-size: 24px;
      font-weight: 900;
      color: var(--navy);
      letter-spacing: -0.02em;
    }

    .brand-sub {
      font-size: 11px;
      color: var(--muted);
      letter-spacing: 0.08em;
      margin-top: 3px;
      font-weight: 500;
    }

    .main-nav-links {
      display: flex;
      align-items: center;
      gap: 30px;
      margin-left: auto;
    }

    .nav-link {
      position: relative;
      font-size: 15px;
      font-weight: 700;
      color: #334155;
      padding: 8px 2px;
      line-height: 1.4;
    }

    .nav-link:hover {
      color: var(--primary);
    }

    .nav-link.active {
      color: var(--primary);
    }

    .nav-link.active::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: -2px;
      height: 3px;
      border-radius: 999px;
      background: var(--amber);
    }

    .nav-cta {
      flex-shrink: 0;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 800;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .nav-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--border);
      background: #fff;
      border-radius: 12px;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 4px;
      cursor: pointer;
      flex-shrink: 0;
    }

    .nav-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      background: var(--navy);
      border-radius: 99px;
      transition: transform var(--ease), opacity var(--ease);
    }

    .site-header.nav-open .nav-toggle span:nth-child(1) {
      transform: translateY(6px) rotate(45deg);
    }

    .site-header.nav-open .nav-toggle span:nth-child(2) {
      opacity: 0;
    }

    .site-header.nav-open .nav-toggle span:nth-child(3) {
      transform: translateY(-6px) rotate(-45deg);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border: 0;
      border-radius: 999px;
      padding: 12px 28px;
      font-size: 15px;
      font-weight: 800;
      line-height: 1.4;
      cursor: pointer;
      transition: background var(--ease), color var(--ease), border var(--ease), box-shadow var(--ease), transform var(--ease);
    }

    .btn-amber {
      background: var(--amber);
      color: #fff;
      box-shadow: 0 8px 18px rgba(217, 119, 6, 0.24);
    }

    .btn-amber:hover {
      background: var(--amber-dark);
      color: #fff;
      box-shadow: 0 10px 24px rgba(217, 119, 6, 0.32);
    }

    .btn-amber:active {
      transform: translateY(1px);
      box-shadow: 0 4px 12px rgba(217, 119, 6, 0.2);
    }

    .btn-outline-light {
      background: transparent;
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.65);
    }

    .btn-outline-light:hover {
      background: rgba(255, 255, 255, 0.12);
      border-color: #fff;
    }

    .btn-outline-dark {
      background: #fff;
      color: var(--primary-dark);
      border: 1px solid #d5e0ea;
      box-shadow: var(--shadow-sm);
    }

    .btn-outline-dark:hover {
      border-color: var(--primary);
      color: var(--primary);
      box-shadow: var(--shadow-md);
    }

    .btn-lg {
      padding: 15px 34px;
      font-size: 16px;
    }

    .cat-hero {
      position: relative;
      background-size: cover;
      background-position: center;
      color: #fff;
      padding: 120px 0 94px;
      overflow: hidden;
    }

    .cat-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(100deg, rgba(7, 27, 53, 0.94) 0%, rgba(12, 48, 90, 0.72) 46%, rgba(15, 66, 118, 0.28) 100%);
    }

    .cat-hero-inner {
      position: relative;
      max-width: 820px;
    }

    .cat-hero h1 {
      color: #fff;
      margin: 18px 0 18px;
    }

    .hero-kicker {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 7px 15px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.14);
      border: 1px solid rgba(255, 255, 255, 0.24);
      color: #fff;
      font-size: 14px;
      font-weight: 700;
      letter-spacing: 0.02em;
      -webkit-backdrop-filter: blur(6px);
      backdrop-filter: blur(6px);
    }

    .hero-kicker::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--amber-bright);
      box-shadow: 0 0 0 5px rgba(245, 158, 11, 0.24);
    }

    .cat-hero .lead {
      max-width: 620px;
      font-size: 19px;
      line-height: 1.8;
      color: rgba(255, 255, 255, 0.88);
      margin-bottom: 34px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 38px;
    }

    .hero-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      padding-top: 4px;
    }

    .hero-pills li {
      padding: 7px 14px;
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 999px;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.86);
      line-height: 1.4;
    }

    .section {
      padding: 92px 0;
    }

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

    .section-white {
      background: #fff;
    }

    .section-navy {
      background: var(--navy);
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 46px;
    }

    .section-kicker {
      display: inline-block;
      font-size: 13px;
      font-weight: 800;
      color: var(--primary);
      background: #eaf2fb;
      border-radius: 999px;
      padding: 6px 14px;
      letter-spacing: 0.04em;
      margin-bottom: 12px;
    }

    .section-head p {
      max-width: 560px;
      color: var(--muted);
      font-size: 15px;
    }

    .topic-list {
      display: grid;
      gap: 28px;
    }

    .topic-card {
      position: relative;
      display: flex;
      align-items: flex-end;
      justify-content: flex-end;
      min-height: 355px;
      padding: 26px;
      border-radius: var(--radius-lg);
      background-size: cover;
      background-position: center;
      overflow: hidden;
      box-shadow: var(--shadow-md);
      transition: transform var(--ease), box-shadow var(--ease);
    }

    .topic-card::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(5, 20, 40, 0.78) 10%, rgba(5, 20, 40, 0.16) 50%, rgba(5, 20, 40, 0.78) 100%);
      transition: background var(--ease);
    }

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

    .topic-card:hover .topic-card__inner {
      border-color: rgba(245, 158, 11, 0.4);
    }

    .topic-card__inner {
      position: relative;
      width: 52%;
      max-width: 640px;
      background: rgba(10, 31, 57, 0.78);
      border: 1px solid rgba(255, 255, 255, 0.12);
      -webkit-backdrop-filter: blur(10px);
      backdrop-filter: blur(10px);
      border-radius: 18px;
      padding: 28px 32px;
      color: #fff;
      transition: border-color var(--ease);
    }

    .topic-card__tag {
      display: inline-flex;
      margin-bottom: 12px;
      background: rgba(217, 119, 6, 0.2);
      border: 1px solid rgba(245, 158, 11, 0.5);
      color: #ffe1b3;
      padding: 4px 11px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 700;
      line-height: 1.5;
    }

    .topic-card__inner h3 {
      color: #fff;
      font-size: 23px;
      line-height: 1.45;
      margin-bottom: 10px;
    }

    .topic-card__inner p {
      color: rgba(255, 255, 255, 0.78);
      font-size: 14px;
      line-height: 1.8;
      margin-bottom: 18px;
    }

    .topic-meta-row {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
      margin-bottom: 16px;
      color: rgba(255, 255, 255, 0.6);
      font-size: 13px;
    }

    .topic-meta-row span {
      display: inline-flex;
      align-items: center;
      gap: 5px;
    }

    .topic-meta-row span::before {
      content: "";
      width: 3px;
      height: 3px;
      border-radius: 50%;
      background: #a8c1dc;
    }

    .topic-card__tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 10px;
    }

    .tag-ghost {
      padding: 5px 12px;
      border-radius: 999px;
      border: 1px solid rgba(255, 255, 255, 0.24);
      color: rgba(255, 255, 255, 0.86);
      font-size: 12px;
      font-weight: 600;
      background: rgba(255, 255, 255, 0.06);
    }

    .topic-card__inner .btn {
      margin-top: 20px;
      padding: 9px 20px;
      font-size: 13px;
    }

    .topic-card__inner .btn-amber {
      background: var(--amber);
    }

    .steps-wrap {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
      position: relative;
    }

    .step-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 30px 26px 28px;
      box-shadow: var(--shadow-sm);
      position: relative;
      transition: transform var(--ease), box-shadow var(--ease);
    }

    .step-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .step-number {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      background: var(--primary-dark);
      color: #fff;
      border-radius: 14px;
      font-weight: 800;
      font-size: 18px;
      margin-bottom: 18px;
    }

    .step-card:nth-child(2) .step-number {
      background: var(--amber-dark);
    }

    .step-card:nth-child(3) .step-number {
      background: var(--navy);
    }

    .step-card:nth-child(4) .step-number {
      background: var(--green);
    }

    .step-card h3 {
      margin-bottom: 10px;
      color: var(--navy);
      font-size: 18px;
    }

    .step-card p {
      color: var(--muted);
      font-size: 14px;
      line-height: 1.8;
    }

    .scenario-list {
      display: grid;
      gap: 14px;
    }

    .scenario-row {
      display: grid;
      grid-template-columns: 118px 1fr;
      gap: 26px;
      background: #fff;
      border: 1px solid var(--border);
      border-left: 4px solid var(--primary);
      border-radius: 16px;
      padding: 26px 28px;
      box-shadow: var(--shadow-sm);
      transition: box-shadow var(--ease), transform var(--ease);
    }

    .scenario-row:hover {
      box-shadow: var(--shadow-md);
      transform: translateX(4px);
    }

    .scenario-time {
      font-weight: 800;
      color: var(--primary);
      background: #eef5ff;
      border-radius: 999px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: fit-content;
      min-height: 40px;
      padding: 6px 16px;
    }

    .scenario-row:nth-child(2) .scenario-time {
      color: var(--amber-dark);
      background: #fdf0dc;
    }

    .scenario-row:nth-child(3) .scenario-time {
      color: var(--green);
      background: #e7f6ef;
    }

    .scenario-row h3 {
      font-size: 18px;
      margin-bottom: 6px;
    }

    .scenario-row p {
      color: var(--muted);
      font-size: 15px;
    }

    .cta-banner {
      position: relative;
      border-radius: 24px;
      overflow: hidden;
      padding: 72px 56px;
      background: linear-gradient(120deg, #082c53, #125799 70%, #0b3c74);
      color: #fff;
      box-shadow: var(--shadow-lg);
    }

    .cta-banner::after {
      content: "";
      position: absolute;
      right: -120px;
      top: -120px;
      width: 360px;
      height: 360px;
      border-radius: 50%;
      background: rgba(245, 158, 11, 0.15);
    }

    .cta-banner-inner {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 40px;
      flex-wrap: wrap;
    }

    .cta-banner h2 {
      color: #fff;
      font-size: 34px;
      margin-bottom: 8px;
    }

    .cta-banner p {
      color: rgba(255, 255, 255, 0.82);
      max-width: 560px;
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .cta-banner .btn-amber {
      background: var(--amber);
      color: #fff;
    }

    .cta-banner .btn-outline-light {
      border-color: rgba(255, 255, 255, 0.48);
    }

    .faq-list {
      max-width: 920px;
      margin: 0 auto;
    }

    .qa {
      background: #fff;
      border: 1px solid var(--border);
      border-left: 4px solid var(--primary);
      border-radius: 14px;
      padding: 0 24px;
      box-shadow: var(--shadow-sm);
      margin-bottom: 14px;
      overflow: hidden;
      transition: box-shadow var(--ease);
    }

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

    .qa summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      padding: 19px 0;
      cursor: pointer;
      list-style: none;
      font-weight: 800;
      color: var(--navy);
      font-size: 16px;
    }

    .qa summary::-webkit-details-marker,
    .qa summary::marker {
      display: none;
      content: "";
    }

    .qa summary::after {
      content: "+";
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 28px;
      height: 28px;
      background: #eef5ff;
      color: var(--primary);
      border-radius: 50%;
      font-size: 20px;
      font-weight: 600;
      flex-shrink: 0;
      transition: transform var(--ease), background var(--ease);
    }

    .qa[open] summary::after {
      content: "−";
      transform: rotate(180deg);
      background: var(--amber);
      color: #fff;
    }

    .qa-answer {
      padding: 0 0 22px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.85;
    }

    .site-footer {
      background: var(--navy);
      color: rgba(255, 255, 255, 0.6);
      padding-top: 68px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 0.8fr 1fr 1fr;
      gap: 44px;
      padding-bottom: 46px;
    }

    .footer-brand {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 18px;
    }

    .footer-brand .brand-main {
      color: #fff;
      font-size: 26px;
    }

    .footer-brand .brand-sub {
      color: rgba(255, 255, 255, 0.45);
      font-size: 12px;
      margin-top: 2px;
    }

    .footer-intro {
      color: rgba(255, 255, 255, 0.62);
      font-size: 14px;
      line-height: 1.8;
      max-width: 280px;
    }

    .site-footer h4 {
      color: rgba(255, 255, 255, 0.92);
      font-size: 15px;
      margin-bottom: 18px;
    }

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

    .site-footer a {
      color: rgba(255, 255, 255, 0.54);
      font-size: 13px;
      line-height: 1.7;
    }

    .site-footer a:hover {
      color: #fff;
    }

    .site-footer p {
      color: rgba(255, 255, 255, 0.54);
      font-size: 13px;
      line-height: 1.8;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      min-height: 46px;
    }

    .footer-bottom .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 6px 16px;
      min-height: 46px;
      color: rgba(255, 255, 255, 0.38);
      font-size: 12px;
    }

    .footer-url {
      color: rgba(255, 255, 255, 0.44);
    }

    .footer-url:hover {
      color: var(--amber-bright);
    }

    a:focus-visible,
    button:focus-visible,
    summary:focus-visible {
      outline: 3px solid rgba(245, 158, 11, 0.44);
      outline-offset: 3px;
      border-radius: 6px;
    }

    @media (max-width: 1080px) {
      .cat-hero {
        padding: 96px 0 74px;
      }

      .topic-card__inner {
        width: 68%;
      }

      .steps-wrap {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
      }

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

    @media (max-width: 900px) {
      .navbar {
        gap: 18px;
      }

      .nav-cta {
        display: none;
      }

      .nav-toggle {
        display: inline-flex;
        margin-left: auto;
      }

      .main-nav-links {
        display: none;
        position: absolute;
        top: calc(100% + 8px);
        left: 12px;
        right: 12px;
        background: #fff;
        margin: 0;
        border-radius: 16px;
        padding: 18px;
        gap: 4px;
        flex-direction: column;
        align-items: stretch;
        box-shadow: var(--shadow-lg);
        border: 1px solid var(--border);
      }

      .site-header.nav-open .main-nav-links {
        display: flex;
      }

      .nav-link.active::after {
        left: 0;
        right: auto;
        width: 22px;
        bottom: 3px;
      }

      .nav-link {
        padding: 12px 8px;
        color: var(--navy);
      }

      .section {
        padding: 68px 0;
      }

      .section-head {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        margin-bottom: 34px;
      }

      .section-head p {
        max-width: 100%;
      }
    }

    @media (max-width: 767px) {
      h1 {
        font-size: 30px;
      }

      h2 {
        font-size: 24px;
      }

      .container {
        width: calc(100% - 40px);
      }

      .topbar {
        font-size: 11px;
      }

      .cat-hero {
        min-height: auto;
        padding: 78px 0 66px;
      }

      .cat-hero .lead {
        font-size: 16px;
      }

      .cat-hero h1 {
        font-size: 30px;
        margin-top: 14px;
        margin-bottom: 12px;
      }

      .hero-actions {
        gap: 10px;
      }

      .btn-lg {
        width: 100%;
        padding: 13px 20px;
      }

      .hero-pills {
        gap: 8px;
      }

      .hero-pills li {
        font-size: 12px;
      }

      .topic-list {
        gap: 20px;
      }

      .topic-card {
        min-height: 0;
        align-items: stretch;
        padding: 0;
      }

      .topic-card__inner {
        width: 100%;
        max-width: none;
        padding: 22px;
        border-radius: 16px;
      }

      .topic-card__inner h3 {
        font-size: 19px;
      }

      .topic-card__inner p {
        font-size: 13px;
      }

      .topic-card {
        background-image: none !important;
        background: #0b2a4e;
      }

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

      .scenario-row {
        grid-template-columns: 1fr;
        gap: 10px;
        padding: 20px;
      }

      .scenario-time {
        justify-self: flex-start;
      }

      .cta-banner {
        padding: 40px 26px;
        border-radius: 18px;
      }

      .cta-banner h2 {
        font-size: 25px;
      }

      .cta-actions .btn {
        width: 100%;
      }

      .qa summary {
        font-size: 15px;
        padding: 16px 0;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        padding-bottom: 30px;
      }

      .footer-bottom .container {
        flex-direction: column;
        justify-content: center;
        padding-top: 10px;
        padding-bottom: 10px;
        text-align: center;
      }
    }

    @media (max-width: 479px) {
      .brand-main {
        font-size: 21px;
      }

      .brand-sub {
        font-size: 10px;
      }

      .topbar-inner span {
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 220px;
      }

      .topic-card__inner {
        padding: 18px;
      }

      .section {
        padding: 56px 0;
      }

      .qa summary {
        gap: 10px;
        font-size: 14px;
      }
    }