:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-muted: #f0f2f5;
  --text: #1c1f23;
  --text-muted: #5c6570;
  --border: #e3e6ea;
  --brand: #0b5fff;
  --brand-strong: #0847c4;
  --brand-ink: #0a3fb5;
  --brand-soft: #e8f0ff;
  --warn: #b7791f;
  --warn-soft: #fdf6e3;
  --bad: #c0392b;
  --bad-soft: #fdecea;
  --grade-s: #12805c;
  --grade-a: #2f855a;
  --grade-b: #4a7ab5;
  --grade-c: #b7791f;
  --grade-d: #c05621;
  --grade-f: #c0392b;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(20, 25, 30, .05), 0 4px 14px rgba(20, 25, 30, .05);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
}

.muted { color: var(--text-muted); }
.small { font-size: 13px; }
.dot { color: var(--border); margin: 0 6px; }

/* ---------- 站点外壳 ---------- */
.shell { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
/* 报告页/错误页沿用窄栏（680px），与官网首页的全宽版式区分开 */
.shell--narrow { max-width: 680px; padding: 0 16px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, .9);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.shell--header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 62px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: .4px;
  color: var(--text);
  text-decoration: none;
}
.brand-mark { display: block; flex: 0 0 auto; }
.brand-name { color: var(--brand); }
.brand-sub { font-size: 12px; font-weight: 500; color: var(--text-muted); letter-spacing: 0; }

.site-nav { display: flex; align-items: center; gap: 22px; font-size: 14px; }
.site-nav a { color: var(--text-muted); text-decoration: none; white-space: nowrap; }
.site-nav a:hover { color: var(--brand); }
.site-nav .nav-cta {
  padding: 7px 16px;
  border-radius: 999px;
  background: var(--brand);
  color: #fff;
  font-weight: 600;
}
.site-nav .nav-cta:hover { background: var(--brand-strong); color: #fff; }

main.shell { padding-top: 22px; padding-bottom: 10px; }

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: 44px;
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.shell--footer { padding-top: 34px; padding-bottom: 34px; }
.footer-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.footer-brand { display: flex; align-items: center; gap: 8px; font-size: 18px; font-weight: 800; }
.footer-tag { font-size: 13px; font-weight: 400; color: var(--text-muted); margin-left: 4px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 20px; font-size: 14px; }
.footer-nav a { color: var(--text-muted); text-decoration: none; }
.footer-nav a:hover { color: var(--brand); }

.disclaimer {
  font-size: 12px;
  line-height: 1.8;
  color: var(--text-muted);
  background: var(--surface-muted);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin: 20px 0 0;
}
.disclaimer strong { color: var(--text); }

.footer-legal {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
}
.footer-legal p { margin: 0; }
.footer-legal a { color: var(--brand); text-decoration: none; }
.footer-legal a:hover { text-decoration: underline; }
.footer-meta { text-align: right; }

@media (max-width: 640px) {
  .shell--header { min-height: 56px; }
  .site-nav { gap: 14px; font-size: 13px; }
  .site-nav a:not(.nav-cta) { display: none; }
  .brand-sub { display: none; }
  .footer-meta { text-align: left; }
}

/* ---------- 卡片 ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
  margin-bottom: 14px;
}
.card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: .3px;
  margin: 0 0 14px;
}
.card p { margin: 0 0 10px; }
.card p:last-child { margin-bottom: 0; }

.hero-title { font-size: 24px; margin: 0 0 10px; letter-spacing: .5px; }
.hero-sub { color: var(--text-muted); margin: 0; }

/* ---------- 分数卡 ---------- */
.score-card { border-left: 4px solid var(--brand); }
.score-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.score-label { font-size: 13px; color: var(--text-muted); letter-spacing: .5px; }
.score-value {
  font-size: 46px;
  font-weight: 700;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.score-unit { font-size: 16px; font-weight: 500; color: var(--text-muted); margin-left: 4px; }
.grade-badge {
  width: 66px;
  height: 66px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--brand-soft);
  color: var(--grade-a);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  font-weight: 700;
}
.grade-unit { font-size: 12px; font-weight: 500; margin-left: 1px; align-self: center; }

.grade-S { border-left-color: var(--grade-s); }
.grade-S .grade-badge { background: #e6f4ef; color: var(--grade-s); }
.grade-S .score-value { color: var(--grade-s); }
.grade-A { border-left-color: var(--grade-a); }
.grade-A .grade-badge { background: #e8f3ec; color: var(--grade-a); }
.grade-A .score-value { color: var(--grade-a); }
.grade-B { border-left-color: var(--grade-b); }
.grade-B .grade-badge { background: #e9f0f9; color: var(--grade-b); }
.grade-B .score-value { color: var(--grade-b); }
.grade-C { border-left-color: var(--grade-c); }
.grade-C .grade-badge { background: var(--warn-soft); color: var(--grade-c); }
.grade-C .score-value { color: var(--grade-c); }
.grade-D { border-left-color: var(--grade-d); }
.grade-D .grade-badge { background: #fdf0e8; color: var(--grade-d); }
.grade-D .score-value { color: var(--grade-d); }
.grade-F { border-left-color: var(--grade-f); }
.grade-F .grade-badge { background: var(--bad-soft); color: var(--grade-f); }
.grade-F .score-value { color: var(--grade-f); }

.score-sub { font-size: 13px; color: var(--text-muted); margin-top: 12px; }

/* ---------- 提示条 ---------- */
.alert {
  margin-top: 14px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
}
.alert-info { background: var(--brand-soft); color: var(--brand-ink); }
.alert-warn { background: var(--bad-soft); color: var(--bad); font-weight: 500; }

/* ---------- 体检码 ---------- */
.code-card { text-align: center; background: var(--surface-muted); border-style: dashed; box-shadow: none; }
.code-label { font-size: 13px; color: var(--text-muted); letter-spacing: .5px; }
.code-value {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 34px;
  font-weight: 700;
  letter-spacing: 6px;
  margin: 8px 0 6px;
  user-select: all;
  word-break: break-all;
}
.code-hint { font-size: 12px; color: var(--text-muted); }
.code-meta {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}
.query-chip {
  background: var(--warn-soft);
  color: var(--warn);
  border-radius: 999px;
  padding: 3px 10px;
  font-weight: 500;
}

/* ---------- 问题 / 关注 ---------- */
.issue-list { margin: 0; padding-left: 20px; }
.issue-list li { margin-bottom: 6px; }
.issue-list li:last-child { margin-bottom: 0; }
.issue-bad li { color: var(--bad); }
.issue-warn li { color: var(--warn); }

/* ---------- 四维明细 ---------- */
.metric-list { list-style: none; margin: 0; padding: 0; }
.metric { margin-bottom: 16px; }
.metric:last-child { margin-bottom: 0; }
.metric-top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 6px; }
.metric-name { font-size: 14px; font-weight: 500; }
.metric-score { font-variant-numeric: tabular-nums; font-weight: 600; }
.metric-bar {
  height: 6px;
  background: #dfe3e8;
  border-radius: 999px;
  overflow: hidden;
}
.metric-bar i { display: block; height: 100%; background: var(--brand); border-radius: 999px; }
.metric-detail { font-size: 12px; color: var(--text-muted); margin-top: 5px; }

/* ---------- 键值表 ---------- */
.kv {
  display: grid;
  grid-template-columns: 78px 1fr;
  gap: 8px 12px;
  margin: 0;
  font-size: 14px;
}
.kv dt { color: var(--text-muted); font-size: 13px; }
.kv dd { margin: 0; word-break: break-all; }
.kv-note {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

/* ---------- CTA ---------- */
.cta-card { text-align: center; }
.cta-btn {
  display: inline-block;
  margin-top: 14px;
  padding: 11px 26px;
  background: var(--brand);
  color: #fff;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}
.url-hint {
  background: var(--surface-muted);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 13px;
  word-break: break-all;
}

@media (max-width: 420px) {
  .score-value { font-size: 38px; }
  .grade-badge { width: 56px; height: 56px; font-size: 26px; }
  .code-value { font-size: 28px; letter-spacing: 4px; }
  .kv { grid-template-columns: 66px 1fr; }
}