:root {
  --ink: #173024;
  --ink-soft: #3e5648;
  --paper: #ffffff;
  --paper-2: #ffffff;
  --card: #ffffff;
  --line: rgba(23, 48, 36, 0.12);
  --teal: #1b8a45;
  --teal-deep: #0f6a32;
  --gold: #1b8a45;
  --gold-soft: #e7f6ec;
  --coral: #0f6a32;
  --shadow: 0 18px 50px rgba(23, 48, 36, 0.08);
  --serif: "Iowan Old Style", Palatino, "Palatino Linotype", "Songti SC", "Noto Serif SC", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --max: 1180px;
  --radius: 18px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: #ffffff;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--teal-deep); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--coral); }
button, input, select { font: inherit; }
.skip {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip:focus {
  width: auto; height: auto; margin: 0; clip: auto; overflow: visible;
  left: 12px; top: 12px; background: var(--ink); color: #fff; padding: 8px 12px; z-index: 40;
}
.wrap { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.topbar {
  background: var(--teal-deep); color: #e7f6ec; font-size: 13px;
}
.topbar .wrap { display: flex; justify-content: space-between; gap: 16px; padding: 8px 0; flex-wrap: wrap; }
.topbar a { color: #ffffff; }
.site-header { position: sticky; top: 0; z-index: 30; background: rgba(255, 255, 255, 0.94); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.header-row { display: flex; align-items: center; flex-wrap: wrap; gap: 14px 18px; padding: 14px 0 8px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); min-width: 180px; }
.logo strong { font-family: var(--serif); font-size: 28px; letter-spacing: 0.04em; font-weight: 700; }
.logo span { display: block; color: var(--ink-soft); font-size: 12px; letter-spacing: 0.12em; }
.mark { width: 42px; height: 42px; flex: none; }
.search { margin-left: auto; display: flex; flex: 1 1 280px; width: auto; max-width: 460px; min-width: 0; background: #fff; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.search input { border: 0; padding: 10px 16px; width: 100%; min-width: 0; background: transparent; outline: none; }
.search button { border: 0; background: var(--teal); color: #fff; padding: 0 18px; cursor: pointer; white-space: nowrap; flex: none; }
.nav-toggle { position: absolute; opacity: 0; pointer-events: none; }
.nav-btn { display: none; margin-left: auto; border: 1px solid var(--line); background: #fff; border-radius: 999px; padding: 8px 14px; }
.nav { display: flex; flex: 1 0 100%; flex-wrap: wrap; gap: 4px; padding: 4px 0 12px; border-top: 1px solid var(--line); }
.nav a { text-decoration: none; color: var(--ink); padding: 6px 10px; border-radius: 999px; font-size: 14px; white-space: nowrap; }
.nav a:hover, .nav a.is-on { background: var(--teal); color: #fff; }
.hero { padding: 42px 0 10px; display: grid; grid-template-columns: 1.4fr 0.8fr; gap: 28px; align-items: end; }
.kicker { color: var(--gold); letter-spacing: 0.18em; font-size: 12px; font-weight: 700; }
h1, h2, h3, h4 { font-family: var(--serif); line-height: 1.25; font-weight: 700; }
.hero h1 { font-size: clamp(36px, 5vw, 64px); margin: 8px 0 12px; }
.lede { font-size: 18px; color: var(--ink-soft); max-width: 46rem; }
.hero-panel { background: var(--teal-deep); color: #f3fbf6; border-radius: 28px; padding: 22px; box-shadow: var(--shadow); }
.hero-panel ol { margin: 0; padding-left: 18px; }
.hero-panel a { color: #ffffff; }
.hero-panel .kicker { color: #b7e7c8; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 22px; }
.stat { background: #ffffff; border: 1px solid var(--line); border-radius: 16px; padding: 12px 14px; }
.stat b { display: block; font-family: var(--serif); font-size: 28px; }
.section { padding: 28px 0; }
.section-head { display: flex; justify-content: space-between; gap: 12px; align-items: end; margin-bottom: 16px; }
.section-head h2 { margin: 0; font-size: clamp(26px, 3vw, 36px); }
.section-head p { margin: 0; color: var(--ink-soft); }
.grid-4, .grid-3, .grid-2 { display: grid; gap: 16px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card, .rank-item, .quote, .file-card, .news-item, .faq-item, .pick-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px;
  box-shadow: 0 1px 0 rgba(255,255,255,.7) inset;
}
.card h3, .rank-item h2, .faq-item h2, .news-item h2, .pick-card h2, .file-card h2, .quote h2 { margin: 8px 0; font-size: 22px; }
.card p, .rank-item p, .quote p, .file-card p, .news-item p, .pick-card p { color: var(--ink-soft); margin: 0 0 8px; }
.icon-row { display: flex; gap: 10px; align-items: center; }
.pill { display: inline-block; border-radius: 999px; padding: 2px 10px; background: var(--gold-soft); color: var(--teal-deep); font-size: 12px; letter-spacing: 0.04em; }
.pill.teal { background: #e7f6ec; color: var(--teal-deep); }
.pill.coral { background: #e7f6ec; color: var(--teal-deep); }
.rank-list, .stack { display: grid; gap: 12px; }
.rank-item { display: grid; grid-template-columns: 72px 1fr; gap: 14px; align-items: start; }
.rank-no {
  width: 72px; height: 72px; border-radius: 20px; display: grid; place-items: center;
  background: var(--teal); color: #fff; font-family: var(--serif); font-size: 32px;
}
.meta { display: flex; flex-wrap: wrap; gap: 8px 14px; color: var(--ink-soft); font-size: 13px; }
.page-hero { padding: 28px 0 8px; }
.page-hero h1 { font-size: clamp(32px, 4vw, 52px); margin: 8px 0; }
.crumb { font-size: 14px; color: var(--ink-soft); }
.crumb a { color: var(--ink-soft); }
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 22px; padding-bottom: 40px; }
.side { position: sticky; top: 92px; align-self: start; display: grid; gap: 12px; }
.side .card h3 { margin-top: 0; }
.article { background: var(--card); border: 1px solid var(--line); border-radius: 24px; padding: clamp(18px, 3vw, 36px); }
.article h1 { font-size: clamp(30px, 4vw, 46px); margin-top: 0; }
.article h2 { font-size: 28px; margin-top: 1.4em; }
.article .lead { font-size: 18px; }
.note, .disclaimer { background: #f3fbf6; border-left: 4px solid var(--teal); padding: 12px 14px; border-radius: 12px; color: #1d4d32; }
.score {
  display: flex; justify-content: space-between; gap: 12px; align-items: center;
  background: var(--teal-deep); color: #f3fbf6; border-radius: 20px; padding: 16px 18px; margin: 16px 0;
}
.score b { font-family: var(--serif); font-size: 42px; color: #d8f3e2; }
.pros { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.pros div { border-radius: 16px; padding: 12px 14px; background: #f6fbfa; }
.pros .bad { background: #fff6f3; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { border-bottom: 1px solid var(--line); text-align: left; padding: 10px 8px; vertical-align: top; }
th { font-size: 13px; letter-spacing: 0.04em; color: var(--ink-soft); }
.table-wrap { overflow-x: auto; }
.quote { border-top: 4px solid var(--gold); }
.file-card { display: grid; grid-template-columns: 72px 1fr; gap: 12px; align-items: center; }
.file-ext { width: 72px; height: 72px; border-radius: 18px; background: var(--gold-soft); display: grid; place-items: center; font-weight: 800; color: var(--teal-deep); }
.btn, .file-card a.btn, a.btn {
  display: inline-block; background: var(--teal); color: #fff; text-decoration: none;
  border-radius: 999px; padding: 8px 14px; margin-top: 8px;
}
.btn:hover { background: var(--teal-deep); color: #fff; }
.pager { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.pager a, .pager b, .pager span { display: inline-block; min-width: 36px; text-align: center; padding: 6px 10px; border-radius: 10px; background: #fff; border: 1px solid var(--line); text-decoration: none; color: var(--ink); }
.site-footer { background: var(--teal-deep); color: #e7f6ec; margin-top: 20px; padding: 36px 0 18px; }
.site-footer a { color: #ffffff; }
.foot-grid { display: grid; grid-template-columns: 1.3fr repeat(3, 1fr); gap: 18px; }
.site-footer h3 { color: #fff; margin: 0 0 8px; font-size: 18px; }
.site-footer ul { margin: 0; padding: 0; list-style: none; }
.legal { border-top: 1px solid rgba(255,255,255,.2); margin-top: 22px; padding-top: 12px; font-size: 13px; color: #d3eddc; }
.mark rect { fill: #1b8a45; }
.mark path { stroke: #ffffff; }
.empty { padding: 28px; text-align: center; color: var(--ink-soft); }
@media (max-width: 980px) {
  .hero, .layout, .grid-4, .grid-3, .pros, .foot-grid { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .nav-btn { display: inline-block; margin-left: auto; order: 2; }
  .search { flex: 1 0 100%; max-width: none; order: 3; }
  .logo { order: 1; }
  .nav { display: none; width: 100%; order: 4; padding-bottom: 14px; border-top: 0; }
  .nav-toggle:checked ~ .nav { display: flex; }
  .header-row { flex-wrap: wrap; }
  .side { position: static; }
  .stats { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .rank-item, .file-card { grid-template-columns: 1fr; }
  .wrap { width: min(var(--max), calc(100% - 20px)); }
  .topbar .wrap { font-size: 12px; }
}