:root {
  --ink: #1f2329;
  --ink-soft: #5b6470;
  --ink-faint: #8a9199;
  --line: #e4e7eb;
  --bg: #f6f7f9;
  --card: #ffffff;
  --brand: #7a3b12;
  --brand-soft: #fdf3e7;
  --ok: #1f7a4d;
  --ok-soft: #eaf7f0;
  --warn: #a15c00;
  --warn-soft: #fff7e6;
  --err: #b3261e;
  --err-soft: #fdecea;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}

.shell { width: min(1080px, 100% - 32px); margin: 0 auto; }

/* ---------- 头部 ---------- */

.hero { background: linear-gradient(160deg, #3d1f08, #7a3b12 60%, #a2571f); color: #fff; padding: 28px 0 32px; }

.hero__inner { display: flex; flex-direction: column; gap: 20px; }

.brand { display: inline-flex; align-items: center; gap: 8px; color: #fff; text-decoration: none; font-weight: 600; width: fit-content; }

.brand__mark { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; background: rgba(255, 255, 255, 0.18); }

.eyebrow { margin: 0 0 6px; font-size: 13px; letter-spacing: .08em; opacity: .85; }

.hero h1 { margin: 0 0 10px; font-size: 28px; line-height: 1.4; }

.hero__lead { margin: 0; max-width: 62ch; opacity: .92; }

.promise { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }

.promise span { background: rgba(255, 255, 255, 0.16); border-radius: 999px; padding: 4px 12px; font-size: 13px; }

/* ---------- 布局 ---------- */

.main-grid { display: grid; gap: 20px; padding: 24px 0 40px; }

.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }

.panel__head { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; margin-bottom: 16px; }

.panel__head h2 { margin: 4px 0 6px; font-size: 20px; }

.panel__head p { margin: 0; color: var(--ink-soft); font-size: 14px; }

.section-kicker { margin: 0; font-size: 12px; letter-spacing: .1em; color: var(--brand); font-weight: 600; }

.result-actions { display: flex; gap: 8px; flex-shrink: 0; }

.text-button { border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 6px 14px; font-size: 13px; color: var(--ink); cursor: pointer; }

.text-button:hover { border-color: var(--brand); color: var(--brand); }

/* ---------- 性质声明 ---------- */

.nature-notice { background: var(--warn-soft); border: 1px solid #ffd591; border-radius: 8px; padding: 12px 14px; margin-bottom: 16px; font-size: 14px; color: #7a4b00; }

.nature-notice strong { display: block; margin-bottom: 4px; }

.nature-notice p { margin: 0; }

/* ---------- 健康状态 ---------- */

.health { display: flex; gap: 10px; align-items: center; border-radius: 8px; padding: 10px 14px; margin-bottom: 18px; font-size: 14px; }

.health strong { display: block; }

.health small { color: var(--ink-soft); }

.health__dot { width: 9px; height: 9px; border-radius: 50%; background: currentColor; flex-shrink: 0; }

.health--checking { background: #f1f3f5; color: var(--ink-soft); }

.health--ready { background: var(--ok-soft); color: var(--ok); }

.health--error { background: var(--err-soft); color: var(--err); }

/* ---------- 表单 ---------- */

.choice-group { border: 0; padding: 0; margin: 0 0 20px; }

.choice-group legend { font-weight: 600; padding: 0; margin-bottom: 10px; }

.choice-group legend span { display: inline-grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; background: var(--brand-soft); color: var(--brand); font-size: 12px; margin-right: 6px; }

.choice-grid { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }

.choice { display: flex; gap: 9px; align-items: flex-start; border: 1px solid var(--line); border-radius: 10px; padding: 11px 12px; cursor: pointer; background: #fff; }

.choice:has(input:checked) { border-color: var(--brand); background: var(--brand-soft); }

.choice input { margin-top: 4px; accent-color: var(--brand); }

.choice strong { display: block; font-size: 14px; font-weight: 600; }

.choice small { display: block; color: var(--ink-faint); font-size: 12px; }

.choice:has(input:disabled) { opacity: .7; cursor: default; }

.form-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }

.primary-button { border: 0; border-radius: 10px; background: var(--brand); color: #fff; padding: 11px 26px; font-size: 15px; font-weight: 600; cursor: pointer; }

.primary-button:disabled { background: #c8ccd1; cursor: not-allowed; }

.form-message { margin: 0; color: var(--err); font-size: 14px; display: none; }

.form-message.is-visible { display: block; }

/* ---------- 结果 ---------- */

.result-meta { font-size: 13px !important; }

.copy-status { margin: 0 0 12px; font-size: 13px; color: var(--ok); min-height: 20px; }

.block { border-top: 1px solid var(--line); padding-top: 18px; margin-top: 18px; }

.block:first-of-type { border-top: 0; margin-top: 0; padding-top: 0; }

.block h3 { margin: 0 0 4px; font-size: 16px; }

.block__hint { margin: 0 0 12px; color: var(--ink-faint); font-size: 13px; }

.summary { display: grid; gap: 6px; margin: 0; }

.summary div { display: flex; gap: 10px; font-size: 14px; }

.summary dt { color: var(--ink-soft); min-width: 76px; margin: 0; }

.summary dd { margin: 0; font-weight: 600; }

.card-list { display: grid; gap: 10px; }

.card { display: flex; gap: 10px; border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; background: #fcfcfd; }

.card__index { flex-shrink: 0; display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--brand-soft); color: var(--brand); font-size: 12px; font-weight: 600; }

.card__body { min-width: 0; }

.card__title { display: block; font-size: 14px; margin-bottom: 2px; }

.card__detail { margin: 0 0 6px; font-size: 14px; color: var(--ink); }

.card__source { margin: 0; font-size: 12px; color: var(--ink-faint); display: flex; flex-wrap: wrap; gap: 8px; align-items: baseline; }

.source-link { color: var(--brand); text-decoration: none; border-bottom: 1px solid currentColor; }

.source-link:hover { opacity: .75; }

.card--official { background: var(--ok-soft); border-color: #bfe3cf; }

.disclaimer { margin: 22px 0 0; padding-top: 14px; border-top: 1px solid var(--line); font-size: 12px; color: var(--ink-faint); }

.site-footer { padding: 0 0 32px; color: var(--ink-faint); font-size: 12px; text-align: center; }

.site-footer p { margin: 2px 0; }

@media (max-width: 640px) {
  .hero h1 { font-size: 22px; }
  .panel { padding: 16px; }
  .panel__head { flex-direction: column; }
}