:root {
  --bg: #f5f7fb;
  --paper: #ffffff;
  --soft: #eef4f7;
  --soft-2: #f8efe7;
  --line: #d9e3ea;
  --text: #152033;
  --muted: #637083;
  --primary: #126f83;
  --primary-dark: #0d5261;
  --accent: #e5793e;
  --blue: #3563e9;
  --warning: #b45309;
  --danger: #b42318;
  --shadow: 0 18px 50px rgba(18, 37, 54, .08);
}

* { box-sizing: border-box; }
html { max-width: 100%; overflow-x: hidden; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, Arial, "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    linear-gradient(180deg, #ffffff 0, var(--bg) 520px),
    var(--bg);
  line-height: 1.55;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
p { color: var(--muted); margin: 0; }
h1, h2, h3 { letter-spacing: 0; }
h2 { margin: 0 0 12px; font-size: 31px; line-height: 1.14; }

.top-strip {
  height: 5px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--blue));
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.nav {
  max-width: 1220px;
  min-height: 76px;
  margin: 0 auto;
  padding: 12px 22px;
  display: flex;
  align-items: center;
  gap: 22px;
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 230px; }
.brand-mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-weight: 900;
}
.brand b { display: block; font-size: 18px; line-height: 1; }
.brand small { display: block; color: var(--muted); font-size: 11px; margin-top: 5px; }
.brand-logo.full-logo { width: auto; max-width: 230px; height: 48px; object-fit: contain; }
.nav-links { display: flex; align-items: center; gap: 18px; margin-left: auto; }
.nav-links a {
  color: #39485a;
  font-size: 13px;
  font-weight: 800;
  padding: 9px 0;
  border-bottom: 2px solid transparent;
}
.nav-links a.active { color: var(--primary); border-bottom-color: var(--primary); }
.safety-btn, .menu-btn {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--text);
  font-weight: 900;
  padding: 11px 16px;
}
.safety-btn { background: var(--soft); }
.menu-btn { display: none; }

.hero {
  max-width: 1220px;
  margin: 54px auto 0;
  padding: 0 22px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(330px, .72fr);
  gap: 56px;
  align-items: center;
}
.hero-copy { min-width: 0; }
.eyebrow, .label {
  display: inline-flex;
  border-radius: 999px;
  padding: 7px 12px;
  background: #e8f4f3;
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 900;
  margin-bottom: 18px;
  max-width: 100%;
  white-space: normal;
}
.hero h1, .page-hero h1 {
  margin: 0;
  max-width: 790px;
  font-size: clamp(42px, 5.5vw, 70px);
  line-height: 1.04;
}
.hero p, .page-hero p {
  max-width: 690px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 18px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.btn {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 11px 17px;
  font-weight: 900;
  font-size: 13px;
  border: 1px solid transparent;
}
.btn.primary { background: var(--primary); color: #fff; }
.btn.secondary { background: var(--accent); color: #fff; }
.btn.ghost { background: #fff; border-color: var(--line); color: var(--text); }
.btn.gold { background: var(--accent); color: #fff; }
.btn.red { background: var(--primary); color: #fff; }
.btn.dark { background: #fff; border-color: var(--line); color: var(--text); }
.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 34px;
  max-width: 610px;
}
.hero-metrics span {
  min-height: 86px;
  border-top: 4px solid var(--primary);
  background: #fff;
  box-shadow: var(--shadow);
  border-radius: 8px;
  padding: 15px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}
.hero-metrics span:nth-child(2) { border-top-color: var(--accent); }
.hero-metrics span:nth-child(3) { border-top-color: var(--blue); }
.hero-metrics b { display: block; color: var(--text); font-size: 28px; line-height: 1; margin-bottom: 8px; }

.audit-board {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  box-shadow: var(--shadow);
  padding: 24px;
}
.audit-board-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  margin-bottom: 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.audit-board-head span { font-size: 24px; font-weight: 900; }
.audit-board-head b {
  border-radius: 999px;
  background: var(--soft);
  color: var(--primary-dark);
  padding: 7px 10px;
  font-size: 12px;
}
.audit-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: center;
  min-height: 52px;
  border-bottom: 1px solid var(--line);
  color: #35465a;
  font-weight: 800;
}
.audit-row b {
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
}
.audit-row .ok { background: #dff3ed; color: #087451; }
.audit-row .warn { background: #fff1d9; color: var(--warning); }
.audit-row .review { background: #e6ebff; color: var(--blue); }
.audit-note {
  margin-top: 18px;
  border-left: 4px solid var(--accent);
  background: var(--soft-2);
  border-radius: 8px;
  padding: 14px 16px;
  color: #63412e;
  font-weight: 800;
}

main { max-width: 1220px; margin: 0 auto; padding: 68px 22px 82px; }
.download-section {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(360px, 1.1fr);
  gap: 28px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  background:
    linear-gradient(135deg, rgba(18,111,131,.08), rgba(229,121,62,.08)),
    #fff;
  box-shadow: var(--shadow);
  padding: 30px;
}
.download-card {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 18px;
}
.download-icon {
  width: 76px;
  height: 76px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-weight: 900;
}
.download-copy b { display: block; font-size: 20px; }
.download-copy span { display: block; color: var(--muted); font-size: 14px; margin-top: 4px; }
.page-index {
  display: grid;
  grid-template-columns: .9fr 1.6fr;
  gap: 30px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 30px;
  box-shadow: var(--shadow);
}
.page-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.page-tile {
  min-height: 76px;
  border-radius: 8px;
  background: var(--soft);
  padding: 14px 16px;
  border-left: 4px solid var(--primary);
}
.page-tile:nth-child(2n) { border-left-color: var(--accent); background: var(--soft-2); }
.page-tile:nth-child(3n) { border-left-color: var(--blue); background: #edf2ff; }
.page-tile b { display: block; }
.page-tile small { color: var(--muted); word-break: break-word; }

.section-head { margin-top: 70px; max-width: 850px; }
.topic-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin-top: 24px;
}
.topic-card, .panel, .content-panel, .side-panel, .featured-news, .news-card, .question-card, .ask-card, .topic-sidebar {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper);
  box-shadow: var(--shadow);
}
.topic-card {
  min-height: 255px;
  padding: 20px;
  display: flex;
  flex-direction: column;
}
.topic-card span {
  color: var(--primary);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}
.topic-card h3 { margin: 12px 0 8px; font-size: 22px; line-height: 1.18; }
.topic-card p { font-size: 14px; }
.topic-card b {
  align-self: flex-start;
  display: inline-flex;
  margin-top: auto;
  border-radius: 7px;
  background: var(--soft);
  color: var(--primary-dark);
  padding: 9px 12px;
  font-size: 12px;
}
.topic-card img.card-thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 14px;
}
.topic-card.spotlight { border-top: 4px solid var(--accent); }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 74px;
}
.panel { padding: 26px; }
.article-list.compact, .qa-mini, .term-list, .app-list, .faq-list, .question-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}
.article-list.compact .article-row {
  display: grid;
  grid-template-columns: 116px 1fr;
  gap: 14px;
  align-items: center;
  border-radius: 8px;
  background: var(--soft);
  padding: 12px;
}
.article-list.compact .article-row small { display: block; color: var(--muted); margin-top: 4px; }
.article-thumb {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 7px;
}
.qa-mini a, .question-list article {
  border-bottom: 1px solid var(--line);
  padding-bottom: 12px;
  font-weight: 800;
}
.inline-link {
  display: inline-flex;
  margin-top: 22px;
  border-radius: 999px;
  padding: 8px 13px;
  background: #e8f4f3;
  color: var(--primary-dark);
  font-weight: 900;
  font-size: 12px;
}

.page-main { padding-top: 42px; }
.page-hero {
  max-width: 1220px;
  margin: 44px auto 0;
  padding: 42px 22px 12px;
}
.page-hero h1 { font-size: clamp(38px, 5vw, 60px); }
.channel-hero {
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(18,111,131,.08), rgba(229,121,62,.08));
  max-width: none;
  padding-left: calc((100vw - min(1220px, 100vw)) / 2 + 22px);
  padding-right: calc((100vw - min(1220px, 100vw)) / 2 + 22px);
  padding-bottom: 42px;
}
.content-layout, .layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 28px;
  margin-top: 30px;
  align-items: start;
}
.content-panel { padding: 28px; margin-bottom: 22px; }
.article-content {
  width: 100%;
  max-width: none;
  min-width: 0;
}
.content-panel ul { margin: 14px 0 0; padding-left: 22px; color: var(--muted); }
.content-panel li { margin: 8px 0; }
.content-panel a, .prose a { color: var(--primary); font-weight: 800; }
.side-panel, .topic-sidebar {
  position: sticky;
  top: 106px;
  align-self: start;
  padding: 22px;
}
.side-panel a, .topic-sidebar a {
  display: block;
  border-radius: 8px;
  background: var(--soft);
  margin-top: 10px;
  padding: 12px;
  color: var(--text);
  font-weight: 800;
}
.side-list a span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.45;
}
details {
  border-radius: 8px;
  background: var(--soft);
  padding: 15px 18px;
}
summary { cursor: pointer; font-weight: 900; }
details p { margin-top: 10px; }
.term-list p, .app-list p {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px;
  align-items: center;
  min-height: 40px;
  border-radius: 8px;
  background: var(--soft);
  padding: 0 16px;
}
.term-list b { color: var(--primary); }
.app-list p { grid-template-columns: 14px 140px 1fr 130px; }
.dot { width: 14px; height: 14px; border-radius: 50%; }
.cyan-bg { background: var(--primary); }
.gold-bg { background: var(--accent); }
.red-bg { background: var(--danger); }
.purple-bg { background: var(--blue); }
.app-list strong { color: var(--primary); font-size: 12px; }

.news-layout, .qa-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 28px;
  margin-top: 30px;
  align-items: start;
}
.news-feed, .qa-feed { display: grid; gap: 20px; min-width: 0; }
.featured-news {
  display: grid;
  grid-template-columns: minmax(280px, 42%) minmax(0, 1fr);
  min-height: 320px;
  overflow: hidden;
  min-width: 0;
}
.featured-news img, .question-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.featured-news img { min-height: 320px; }
.featured-news > div { padding: 28px; align-self: center; }
.featured-news h2 { font-size: 34px; }
.news-kicker, .news-date {
  display: inline-flex;
  margin-bottom: 12px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}
.tag-row span {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--soft);
  color: #35465a;
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 800;
}
.news-card {
  padding-bottom: 20px;
  overflow: hidden;
  min-width: 0;
}
.news-card img {
  width: 100%;
  height: auto;
  max-height: 280px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.news-card > :not(img) { margin-left: 20px; margin-right: 20px; }
.news-card .news-date { margin-top: 18px; color: var(--accent); }
.news-card h3 { margin: 0 20px 8px; font-size: 22px; line-height: 1.15; }
.news-card p { font-size: 14px; }
.sidebar-note {
  margin-top: 20px;
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  background: var(--soft-2);
  padding: 15px;
}
.sidebar-note b { color: #6f3b20; }
.sidebar-note p { margin-top: 8px; font-size: 13px; color: #765544; }
.ask-card {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 22px;
  padding: 24px;
  align-items: center;
  border-left: 5px solid var(--primary);
}
.cyan-text { color: var(--primary); background: #e8f4f3; padding: 7px 12px; }
.red-text { color: var(--danger); background: transparent; padding: 0; }
.ask-input {
  min-height: 52px;
  display: flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
  color: var(--muted);
  padding: 0 16px;
  font-weight: 800;
}
.ask-input input, .search-form input {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  outline: 0;
}
.question-card {
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr) 116px;
  gap: 20px;
  padding: 18px;
  align-items: stretch;
}
.question-media {
  min-height: 150px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--soft);
}
.question-head {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 12px;
}
.avatar {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 900;
}
.question-head small { display: block; color: var(--muted); font-size: 12px; margin-top: 2px; }
.question-card h2 { font-size: 24px; margin-bottom: 8px; }
.answer-preview { font-size: 15px; }
.qa-stats {
  display: grid;
  align-content: center;
  gap: 12px;
  border-left: 1px solid var(--line);
  padding-left: 18px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}
.qa-stats b {
  display: inline-flex;
  justify-content: center;
  border-radius: 8px;
  background: #e8f4f3;
  color: var(--primary-dark);
  padding: 9px 10px;
  font-size: 12px;
}

.article-list { display: grid; gap: 18px; }
.article-row {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 20px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper);
  padding: 18px;
}
.article-row h2 { margin: 0 0 8px; font-size: 24px; }
.article-row p { font-size: 15px; }
.date {
  min-height: 86px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--soft);
  color: var(--primary);
  font-weight: 900;
  text-align: center;
}
.article-content .hero-image {
  width: 100%;
  max-height: 440px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--line);
  margin: 28px 0;
}
.prose {
  color: #34465a;
  font-size: 17px;
  overflow-wrap: anywhere;
}
.prose img, .prose iframe, .prose video {
  max-width: 100%;
  height: auto;
}
.prose h2, .prose h3 { color: var(--text); margin-top: 28px; }
.prose p, .prose li { color: #34465a; }
.prose table { width: 100%; border-collapse: collapse; margin: 18px 0; }
.prose th, .prose td { border: 1px solid var(--line); padding: 10px; text-align: left; }
.pagination {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}
.pagination a {
  min-width: 42px;
  min-height: 42px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--paper);
  border: 1px solid var(--line);
  color: var(--text);
  font-weight: 900;
}
.pagination a.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.search-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  margin: 24px 0;
}

.footer {
  border-top: 1px solid var(--line);
  background: #122536;
  padding: 34px 22px;
  color: #fff;
}
.footer-grid {
  max-width: 1220px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 40px;
}
.footer h2 { font-size: 24px; color: #fff; }
.footer p, .disclaimer { color: #b8c5d1; }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px 24px; }
.footer-links a, .footer-columns a { color: #dce7ef; font-weight: 800; font-size: 14px; }
.footer-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.footer-columns h3 { margin: 0 0 8px; font-size: 16px; color: #fff; }
.footer-columns a { display: block; margin: 7px 0; }
.disclaimer {
  max-width: 1220px;
  margin: 24px auto 0;
  font-size: 12px;
}

@media (max-width: 980px) {
  .nav { flex-wrap: wrap; position: relative; }
  .menu-btn { display: inline-flex; margin-left: auto; }
  .safety-btn { display: none; }
  .nav-links {
    display: none;
    width: 100%;
    margin: 12px 0 0;
    padding: 12px;
    border-radius: 10px;
    background: var(--paper);
    border: 1px solid var(--line);
  }
  .nav-links.open { display: grid; }
  .hero, .page-index, .topic-grid, .split, .content-layout, .layout, .footer-grid, .news-layout, .qa-layout, .featured-news, .ask-card, .question-card {
    grid-template-columns: 1fr;
  }
  .download-section, .download-card { grid-template-columns: 1fr; }
  .hero { gap: 30px; }
  .page-grid { grid-template-columns: 1fr 1fr; }
  .side-panel, .topic-sidebar { position: static; }
  .question-media { min-height: 210px; }
  .qa-stats { border-left: 0; border-top: 1px solid var(--line); padding: 16px 0 0; display: flex; align-items: center; }
  .footer-columns, .search-form { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  body { max-width: 100vw; overflow-x: hidden; }
  .nav, .hero, main { width: 100%; max-width: 100vw; overflow-x: hidden; }
  .nav { gap: 10px; padding-left: 18px; padding-right: 18px; }
  .brand { min-width: 0; flex: 0 1 auto; padding-right: 82px; }
  .brand b { font-size: 16px; }
  .brand small { display: none; }
  .menu-btn { position: absolute; right: 18px; top: 18px; margin-left: 0; padding: 10px 12px; }
  .hero { margin-top: 32px; padding-left: 18px; padding-right: 18px; }
  .hero-copy { width: 100%; max-width: 100%; }
  .hero h1, .page-hero h1 {
    max-width: min(100%, 360px);
    font-size: 34px;
    line-height: 1.08;
    overflow-wrap: break-word;
  }
  .hero p, .page-hero p, .eyebrow { max-width: min(100%, 340px); }
  .hero-metrics, .page-grid { grid-template-columns: 1fr; }
  .page-index, .panel, .topic-card, .content-panel, .side-panel, .featured-news, .news-card, .question-card, .ask-card, .topic-sidebar, .audit-board {
    max-width: 100%;
  }
  .page-index, .panel, .content-panel, .ask-card, .question-card { padding: 20px; }
  .download-section, .download-card { padding: 20px; }
  .download-card .btn { width: 100%; }
  .topic-card { min-height: 0; }
  .term-list p, .app-list p { grid-template-columns: 1fr; padding: 12px 16px; }
  .featured-news > div { padding: 20px; }
  .featured-news img { min-height: 210px; }
  .featured-news h2 { font-size: 26px; }
  .question-card h2 { font-size: 22px; }
  .question-media { min-height: 170px; }
  .article-list.compact .article-row, .article-row { grid-template-columns: 1fr; }
}