:root {
  --ink: #14213d;
  --muted: #526070;
  --paper: #fbfaf6;
  --line: #dde3ea;
  --accent: #0f766e;
  --warm: #f4c95d;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif; color: var(--ink); background: var(--paper); line-height: 1.75; }
a { color: inherit; text-decoration: none; }
.site-header { position: sticky; top: 0; z-index: 3; display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 16px clamp(18px, 5vw, 64px); background: rgba(251,250,246,.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
.brand { font-weight: 800; }
nav { display: flex; gap: 18px; flex-wrap: wrap; color: var(--muted); }
main { overflow: hidden; }
.hero-panel, section { padding: clamp(42px, 7vw, 86px) clamp(18px, 5vw, 64px); }
.hero-panel { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(260px, .85fr); gap: 36px; align-items: center; min-height: 72vh; background: linear-gradient(135deg, #fffdfa 0%, #e8f3ef 52%, #fff3c4 100%); }
.eyebrow { margin: 0 0 10px; color: var(--accent); font-size: 14px; font-weight: 700; }
h1 { max-width: 980px; margin: 0; font-size: clamp(34px, 6vw, 68px); line-height: 1.12; letter-spacing: 0; }
h2 { margin: 0; font-size: clamp(24px, 3vw, 38px); line-height: 1.25; letter-spacing: 0; }
h3 { margin: 8px 0 8px; font-size: 20px; line-height: 1.35; letter-spacing: 0; }
.lead, .hero-copy p, .section-head p, .split-head p, article p { color: var(--muted); }
.lead { max-width: 820px; font-size: 19px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 26px; }
.button { display: inline-flex; align-items: center; min-height: 44px; padding: 10px 18px; border: 1px solid var(--ink); border-radius: 6px; font-weight: 700; }
.primary { background: var(--ink); color: #fff; }
.ghost { background: #fff; }
.hero-board { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.hero-board span { min-height: 92px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 8px; background: #fff; font-weight: 800; box-shadow: 0 16px 40px rgba(20,33,61,.08); }
.section-head, .split-head { max-width: 1080px; margin: 0 auto 24px; display: flex; justify-content: space-between; gap: 22px; align-items: end; }
.section-head p, .split-head p { max-width: 520px; margin: 8px 0 0; }
.cards, .article-grid, .article-list-grid { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.cards article, .article-card, .article-list-item, .qa-list details, .rank-list li { border: 1px solid var(--line); border-radius: 8px; padding: 20px; background: #fff; }
.masonry article:nth-child(1), .masonry article:nth-child(5) { grid-column: span 2; background: #eef8f4; }
article span, .article-category { color: var(--accent); font-weight: 700; font-size: 14px; }
.qa-list, .rank-list { max-width: 980px; margin: 0 auto; display: grid; gap: 12px; padding: 0; }
.rank-list { list-style: none; }
.rank-list li { display: grid; grid-template-columns: 54px 1fr; gap: 18px; align-items: start; }
.rank-list strong { color: var(--accent); font-size: 28px; }
.about-lead, .app-lead, .article-list-hero { background: #152238; color: #fff; }
.about-lead p, .app-lead p, .article-list-hero p { max-width: 900px; color: #d9e2ec; }
.article-detail { max-width: 850px; margin: 0 auto; padding: clamp(42px, 7vw, 86px) 18px; }
.article-detail h1 { font-size: clamp(32px, 5vw, 54px); }
.article-summary { color: var(--muted); font-size: 19px; }
.article-meta { display: flex; gap: 16px; color: var(--muted); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 12px 0; margin: 24px 0; }
.article-body h2 { margin-top: 34px; font-size: 26px; }
.related-articles { padding: 24px 0; }
.site-footer { padding: 28px clamp(18px, 5vw, 64px); background: #101828; color: #d9e2ec; }
.site-footer a { color: var(--warm); }
@media (max-width: 860px) {
  .hero-panel { grid-template-columns: 1fr; min-height: auto; }
  .cards, .article-grid, .article-list-grid { grid-template-columns: 1fr; }
  .masonry article:nth-child(1), .masonry article:nth-child(5) { grid-column: auto; }
  .section-head, .split-head { display: block; }
}