:root {
  --primary: #1a73e8;
  --primary-dark: #1557b0;
  --accent: #0ea5e9;
  --bg: #ffffff;
  --bg-alt: #f5f7fb;
  --text: #101828;
  --text-muted: #667085;
  --border: #e4e7ec;
  --radius: 12px;
  --shadow: 0 12px 30px rgba(16, 24, 40, 0.08);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 10% 10%, #e8f1ff 0, transparent 40%), var(--bg);
  line-height: 1.7;
}
a { color: var(--primary); text-decoration: none; }
img { max-width: 100%; display: block; background: #e5ecf6; }
.container { width: min(1200px, 92%); margin: 0 auto; }

.site-header {
  position: sticky; top: 0; z-index: 1000; background: rgba(248, 250, 255, 0.96); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; gap: 12px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--text); }
.logo img {
  width: 40px; height: 40px; object-fit: contain; flex-shrink: 0;
  background: linear-gradient(135deg, #0b1220, #1a73e8);
  padding: 6px; border-radius: 10px;
}
.logo-text { font-size: 1rem; white-space: nowrap; }
.nav-toggle { display: none; padding: 8px 12px; border: 1px solid var(--border); border-radius: 8px; background: #fff; }
.nav ul { list-style: none; display: flex; gap: 18px; }
.nav a { color: var(--text); font-weight: 500; }
.btn {
  padding: 10px 16px; border-radius: 10px; border: 1px solid var(--primary);
  background: linear-gradient(135deg, #1a73e8, #0ea5e9); color: #fff; font-weight: 600;
  box-shadow: 0 8px 20px rgba(14, 165, 233, 0.25);
}
.btn.ghost { background: transparent; color: var(--primary); box-shadow: none; }

.hero {
  padding: 60px 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(255,255,255,0.2), transparent 40%),
    linear-gradient(135deg, #0f172a, #1a73e8);
  color: #fff;
}
.hero-inner { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 32px; align-items: center; }
.hero-copy h1 { line-height: 1.2; letter-spacing: 0.6px; }
.hero-copy .lead { color: rgba(255,255,255,0.85); margin: 12px 0 18px; }
.hero-tag {
  display: inline-flex; align-items: center; padding: 6px 12px; border-radius: 999px;
  background: rgba(255,255,255,0.14); color: #fff; font-size: 12px; font-weight: 600;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-visual img { border-radius: var(--radius); box-shadow: 0 20px 50px rgba(0,0,0,0.35); }

.ticker {
  background: linear-gradient(90deg, #0b1220, #0f172a);
  color: #d0e2ff; padding: 10px 0; overflow: hidden;
}
.ticker-inner { display: flex; gap: 16px; align-items: center; flex-wrap: nowrap; }
.ticker-label { white-space: nowrap; font-weight: 700; letter-spacing: 1px; flex-shrink: 0; writing-mode: horizontal-tb; }
.ticker-track { display: inline-flex; gap: 32px; white-space: nowrap; animation: tickerMove 20s linear infinite; min-width: 0; }

.section { padding: 56px 0; }
.section.alt { background: var(--bg-alt); }
.section-header h2 { font-size: 1.6rem; margin-bottom: 8px; }
.section-header p { color: var(--text-muted); }

.news-aggregate {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 2fr) minmax(240px, 1fr);
  margin-top: 24px;
}
.news-hero {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.news-hero img { width: 100%; height: 240px; object-fit: cover; }
.news-hero-content { padding: 16px; }
.news-list { display: grid; gap: 12px; margin-top: 16px; }
.news-row {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.news-row:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.news-thumb { width: 96px; height: 72px; object-fit: cover; border-radius: 10px; }
.news-kicker { display: inline-block; font-size: 12px; color: var(--primary); font-weight: 600; }
.news-meta { font-size: 12px; color: var(--text-muted); margin-top: 6px; }

.news-sidebar .side-block {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}
.rank-list { padding-left: 18px; color: var(--text); display: grid; gap: 8px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-list span {
  background: var(--bg-alt);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
}
.mini-grid { display: grid; gap: 12px; }
.mini-card img { width: 100%; height: 120px; object-fit: cover; border-radius: 10px; margin-bottom: 8px; }

.news-grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); margin-top: 24px; }
.news-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.news-card:hover { transform: translateY(-6px); box-shadow: 0 20px 40px rgba(14, 165, 233, 0.2); }
.news-card img { width: 100%; height: 200px; object-fit: cover; }
.news-card .news-content { padding: 16px; }
.news-card.featured { grid-column: span 2; }
.news-tag { display: inline-block; font-size: 12px; color: #fff; background: var(--accent); padding: 4px 8px; border-radius: 999px; }

.news-board { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin-top: 24px; }
.board-column {
  background: #fff; border-radius: var(--radius); border: 1px solid var(--border);
  padding: 16px; box-shadow: var(--shadow);
}
.board-column h3 { margin-bottom: 10px; }
.board-column ul { list-style: none; display: grid; gap: 8px; color: var(--text); }

.news-stream { margin-top: 28px; }
.news-stream h3 { font-size: 1.25rem; margin-bottom: 12px; }
.stream-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.stream-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.stream-card img { width: 100%; height: 150px; object-fit: cover; }
.stream-card h4 { padding: 12px; font-size: 1rem; }

.mega-news {
  background: #fff; border: 1px solid var(--border); border-radius: 16px; padding: 20px;
  box-shadow: var(--shadow);
}
.mega-news ul {
  list-style: none; display: grid; gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.mega-news li {
  padding: 10px 12px; border: 1px dashed var(--border); border-radius: 12px;
  background: linear-gradient(135deg, #f7f9ff, #ffffff);
}

.analysis-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.analysis-card { display: grid; gap: 12px; background: #fff; padding: 16px; border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow); }

.guide-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.guide-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; transition: transform 0.25s ease; box-shadow: var(--shadow); }
.guide-card:hover { transform: translateY(-3px); }

.safety-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.safety-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }

.download-panel {
  display: grid; gap: 20px; align-items: center; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  background: #fff; border-radius: 18px; padding: 20px; border: 1px solid var(--border); box-shadow: var(--shadow);
}
.download-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.recommend-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.recommend-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.recommend-card img { width: 100%; height: 160px; object-fit: cover; border-radius: 10px; margin-bottom: 10px; }
.recommend-list { margin-top: 18px; display: grid; gap: 8px; }
.recommend-item { background: #fff; border: 1px dashed var(--border); border-radius: 10px; padding: 10px 12px; color: var(--text); }

.floating-download-bar {
  position: fixed; bottom: 20px; right: 20px; background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(26, 115, 232, 0.95));
  color: #fff; padding: 12px 16px; border-radius: 18px; box-shadow: 0 20px 40px rgba(0,0,0,0.35);
  border: 1px solid rgba(255,255,255,0.12);
}
.floating-inner { display: flex; align-items: center; gap: 10px; }
.floating-info { display: flex; flex-direction: column; gap: 4px; }
.floating-text { font-weight: 600; letter-spacing: 0.5px; }
.floating-btn {
  background: #fff; color: #0f172a; border: none; padding: 8px 14px; border-radius: 999px;
  font-weight: 700; box-shadow: inset 0 0 0 1px rgba(255,255,255,0.4);
}

.site-footer { background: #0b1220; color: #cbd5e1; padding: 32px 0 20px; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; }
.footer-brand img { width: 36px; height: 36px; object-fit: contain; background: #0f172a; padding: 5px; border-radius: 8px; }
.footer-links ul { list-style: none; }
.footer-links a { color: #cbd5e1; }
.footer-bottom { margin-top: 16px; }

.reveal, .reveal-item { opacity: 1; transform: none; }
body.js .reveal { opacity: 0; transform: translateY(14px); transition: all 0.6s ease; }
body.js .reveal.is-visible { opacity: 1; transform: translateY(0); }
body.js .reveal-item { opacity: 0; transform: translateY(10px); transition: all 0.5s ease; }
body.js .reveal-item.is-visible { opacity: 1; transform: translateY(0); }

@keyframes tickerMove {
  0% { transform: translateX(0); }
  100% { transform: translateX(-45%); }
}

@media (max-width: 900px) {
  .news-aggregate { grid-template-columns: 1fr; }
  .news-hero img { height: 200px; }
}

@media (max-width: 768px) {
  .nav-toggle { display: inline-flex; }
  .cta-download { display: none; }
  .nav {
    position: absolute;
    left: 0; right: 0; top: 64px;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.12);
    display: none;
  }
  .nav ul { display: flex; flex-direction: column; gap: 8px; padding: 12px 16px; }
  .nav.is-open { display: block; }
  .news-card.featured { grid-column: span 1; }
  .hero-actions { width: 100%; }
  .hero-actions .btn { flex: 1; justify-content: center; }
  .ticker-track { font-size: 0.9rem; }
}

@media (max-width: 600px) {
  .header-inner { flex-wrap: wrap; }
  .logo-text { font-size: 0.95rem; }
  .news-row { grid-template-columns: 1fr; }
  .news-thumb { width: 100%; height: 160px; }
  .floating-download-bar { right: 12px; bottom: 12px; width: calc(100% - 24px); justify-content: space-between; }
}


.mega-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.mega-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.mega-card:hover { transform: translateY(-4px); box-shadow: 0 18px 36px rgba(14, 165, 233, 0.18); }
.mega-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
}
.mega-title {
  padding: 12px 14px;
  font-weight: 600;
  color: var(--text);
}


.keyword-nav .tag-list { margin-top: 12px; }
.keyword-nav .tag-list span { background: #eef4ff; }


.keyword-nav .tag-list a {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #eef4ff;
  color: var(--text);
  font-size: 12px;
}

.outline {
  background: #ffffff;
}
.outline-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.outline-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  background: linear-gradient(135deg, #f7f9ff, #ffffff);
  box-shadow: var(--shadow);
}