:root {
  --bg: #f5f8fb;
  --panel: #ffffff;
  --paper: #ffffff;
  --text: #17211d;
  --ink: #17211d;
  --muted: #61716d;
  --line: #dbe7e2;
  --green: #128763;
  --cyan: #246bfe;
  --red: #d95d45;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.64; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.skip-link { position: absolute; left: 16px; top: -50px; z-index: 20; background: var(--green); color: #fff; padding: 10px 14px; font-weight: 800; }
.skip-link:focus { top: 14px; }

.hero {
  min-height: 76vh;
  padding: 18px 0 48px;
  background:
    linear-gradient(135deg, rgba(18,135,99,.12), transparent 34%),
    radial-gradient(circle at 78% 18%, rgba(36,107,254,.12), transparent 28%),
    var(--bg);
}
.nav { display: flex; justify-content: space-between; align-items: center; gap: 20px; position: sticky; top: 12px; z-index: 10; background: rgba(255,255,255,.84); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; backdrop-filter: blur(16px); box-shadow: 0 10px 28px rgba(24,43,38,.08); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 900; }
.brand img { border-radius: 9px; }
.nav-links { display: flex; flex-wrap: wrap; gap: 6px; }
.nav-links a { color: var(--muted); font-size: 14px; padding: 7px 9px; border-radius: 6px; }
.nav-links a:hover { background: #eef5f2; color: var(--text); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(300px, .76fr); gap: 34px; align-items: center; padding-top: 44px; }
.eyebrow { margin: 0 0 10px; color: var(--green); font-weight: 900; letter-spacing: 0; }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(34px, 4.6vw, 58px); line-height: 1.02; letter-spacing: 0; margin-bottom: 18px; max-width: none; white-space: nowrap; }
h2 { font-size: clamp(25px, 3.6vw, 40px); line-height: 1.16; margin-bottom: 10px; }
h3 { font-size: 20px; line-height: 1.22; margin-bottom: 0; }
.hero-copy p:not(.eyebrow), .section-head p, .tool-layout p, .download-grid p, .notice p { color: var(--muted); }
.hero-actions, .download-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.btn { min-height: 42px; display: inline-flex; align-items: center; justify-content: center; padding: 0 15px; border-radius: 6px; border: 1px solid transparent; font-weight: 900; }
.btn.primary { background: var(--green); color: #fff; }
.btn.secondary { background: #fff; color: var(--text); border-color: var(--line); }
.quick-panel { margin-top: 22px; max-width: 640px; border: 1px solid var(--line); border-radius: 8px; padding: 10px; background: rgba(255,255,255,.7); box-shadow: 0 12px 34px rgba(24,43,38,.07); }
.search-shell { min-height: 44px; display: flex; align-items: center; gap: 10px; padding: 0 12px; border-radius: 6px; background: #fff; color: var(--ink); border: 1px solid #e5eee9; }
.search-shell span { width: 28px; height: 28px; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; background: #e8f4ef; color: #127a58; font-size: 18px; }
.quick-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 8px; }
.quick-tags a { padding: 6px 9px; border-radius: 999px; background: #eaf6f1; color: var(--green); font-size: 13px; font-weight: 800; }
.hero-art { margin: 0; border: 1px solid var(--line); border-radius: 8px; padding: 12px; background: #fff; box-shadow: 0 20px 52px rgba(24,43,38,.09); }

.stats { margin-top: -28px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; position: relative; z-index: 2; }
.stats article { background: var(--paper); color: var(--ink); border-radius: 8px; padding: 16px; border: 1px solid var(--line); box-shadow: 0 12px 30px rgba(24,43,38,.08); }
.stats strong { display: block; font-size: 34px; line-height: 1; }
.stats span { color: var(--muted); font-weight: 800; }

.section { padding: 54px 0; }
.section-head { max-width: 780px; margin-bottom: 18px; }
.category-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin: -4px 0 14px; }
.category-tabs a { display: inline-flex; min-height: 34px; align-items: center; padding: 0 12px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); font-size: 13px; font-weight: 900; background: #fff; }
.category-tabs a.active, .category-tabs a:hover { background: var(--green); color: #fff; border-color: var(--green); }
.site-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.site-card { position: relative; background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 14px; min-height: 148px; display: grid; align-content: start; gap: 6px; transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease; }
.site-card::after { content: "->"; position: absolute; right: 12px; bottom: 10px; color: var(--cyan); font-weight: 900; }
.site-card:hover { transform: translateY(-2px); border-color: rgba(36,107,254,.36); box-shadow: 0 12px 28px rgba(24,43,38,.08); }
.site-card.featured { border-color: rgba(18,135,99,.45); box-shadow: inset 0 0 0 1px rgba(18,135,99,.12), 0 12px 30px rgba(18,135,99,.06); }
.site-card p { color: var(--muted); margin-bottom: 6px; font-size: 14px; }
.site-card a { color: var(--cyan); font-weight: 900; font-size: 14px; }
.status { justify-self: start; border-radius: 999px; padding: 3px 8px; font-size: 12px; font-weight: 900; }
.status.indexed { background: #eaf6f1; color: var(--green); }

.tool-band { background: #fff; color: var(--ink); padding: 52px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.tool-band .eyebrow { color: var(--green); }
.tool-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 24px; align-items: start; }
.tool-layout p { color: var(--muted); }
.tool-list { display: grid; gap: 8px; }
.tool-list a { position: relative; display: grid; gap: 2px; background: #f8fbfa; border: 1px solid var(--line); border-radius: 8px; padding: 13px 38px 13px 14px; }
.tool-list a::after { content: "->"; position: absolute; right: 14px; top: 50%; transform: translateY(-50%); color: var(--green); font-weight: 900; }
.tool-list strong { font-size: 17px; }
.tool-list span { color: var(--muted); font-size: 14px; }

.visual-section { padding: 54px 0; }
.visual-grid { display: grid; grid-template-columns: minmax(0, 1fr) 230px; gap: 12px; align-items: center; }
.visual-grid img { width: 100%; height: auto; background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 10px; }

.download-panel { background: #eef5f2; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 52px 0; }
.download-grid { display: grid; grid-template-columns: 1fr 220px; gap: 22px; align-items: center; }
.qr-box { margin: 0; background: #fff; color: var(--ink); border-radius: 8px; padding: 16px; display: grid; justify-items: center; gap: 10px; text-align: center; border: 1px solid var(--line); }
.qr-box img { border-radius: 6px; }
.qr-box figcaption { font-weight: 900; }

.notice { margin: 46px auto; background: #fff8f6; border: 1px solid rgba(217,93,69,.22); border-left: 5px solid var(--red); border-radius: 8px; padding: 18px; }
.notice strong { display: block; margin-bottom: 8px; color: var(--red); }
.footer { padding: 22px 0; color: var(--muted); border-top: 1px solid var(--line); background: #fff; }

@media (max-width: 1040px) {
  .site-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 920px) {
  .hero-grid, .stats, .site-grid, .tool-layout, .visual-grid, .download-grid { grid-template-columns: 1fr; }
  .nav, .footer-inner { flex-direction: column; align-items: flex-start; }
  .hero { min-height: auto; }
  .stats { margin-top: 0; padding-top: 18px; }
  h1 { white-space: normal; }
}