@font-face {
  font-family: "Barlow Condensed";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/assets/fonts/barlow-condensed-600.ttf") format("truetype");
}
@font-face {
  font-family: "Barlow Condensed";
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("/assets/fonts/barlow-condensed-800.ttf") format("truetype");
}

:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --surface-soft: #f1f4fa;
  --ink: #1d2c5e;
  --muted: #5b6784;
  --faint: #7b86a0;
  --red: #e3350d;
  --red-dark: #b42318;
  --yellow: #ffcb05;
  --yellow-soft: #fff4d6;
  --blue: #3b4cca;
  --blue-dark: #1f3aa8;
  --green: #1b9e4b;
  --green-soft: #e8f7ee;
  --amber: #b7791f;
  --line: #dfe4ef;
  --line-strong: #cbd3e4;
  --shadow: 0 18px 50px rgba(29, 44, 94, .08);
  --display: "Barlow Condensed", "Arial Narrow", ui-sans-serif, sans-serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
html { background: var(--bg); color: var(--ink); }
body {
  margin: 0;
  font-family: var(--sans);
  line-height: 1.6;
  background:
    radial-gradient(760px 420px at 88% -8%, rgba(227, 53, 13, .08), transparent 62%),
    radial-gradient(620px 360px at 4% 0%, rgba(59, 76, 202, .07), transparent 62%),
    var(--bg);
}
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-dark); text-decoration: underline; }
.wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
main { min-height: 60vh; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(14px);
}
.site-header::before {
  content: "";
  display: block;
  height: 4px;
  background: linear-gradient(90deg, var(--red), var(--yellow) 48%, var(--blue));
}
.header-inner { min-height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { color: var(--ink); display: inline-flex; align-items: center; gap: 10px; font: 800 22px var(--display); letter-spacing: .02em; }
.brand:hover { color: var(--ink); text-decoration: none; }
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: var(--red);
  color: #fff;
  border: 2px solid var(--yellow);
  border-radius: 9px;
  font: 800 13px var(--display);
  letter-spacing: .03em;
  box-shadow: 0 3px 0 rgba(29, 44, 94, .15);
}
.nav { display: flex; gap: 20px; flex-wrap: wrap; }
.nav a { color: var(--muted); font-size: 14px; font-weight: 600; padding: 8px 0; border-bottom: 3px solid transparent; }
.nav a.active, .nav a:hover { color: var(--ink); text-decoration: none; border-bottom-color: var(--red); }

/* Hero */
.hero { max-width: 980px; margin: 0 auto; padding: 46px 0 28px; text-align: center; }
.hero-copy { max-width: 760px; margin: 0 auto; }
.eyebrow { font: 700 12px var(--sans); letter-spacing: .1em; color: var(--red); text-transform: uppercase; margin: 0 0 12px; }
h1 { font: 800 clamp(2.7rem, 6vw, 4.4rem)/.94 var(--display); letter-spacing: .01em; margin: 0 0 18px; max-width: 900px; color: var(--ink); }
h2 { font: 800 clamp(1.8rem, 3.6vw, 2.7rem)/1 var(--display); letter-spacing: .01em; margin: 0 0 12px; }
h3 { font: 700 1.2rem/1.15 var(--display); letter-spacing: .01em; margin: 0 0 8px; }
.lede { color: var(--muted); font-size: 1.08rem; max-width: 640px; margin-left: auto; margin-right: auto; }
.hero-copy .lede { margin-bottom: 20px; }
.bullets { list-style: none; padding: 0; margin: 0 0 18px; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.bullets li { color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; font-size: 12.5px; }
.bullets li::before { content: "✓"; color: var(--green); font-weight: 800; margin-right: 6px; }
.fine { color: var(--faint); font-size: 12px; }
.checker-panel {
  max-width: 780px;
  margin: 18px auto 0;
  padding: 26px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 5px solid var(--red);
  border-radius: 16px;
  box-shadow: var(--shadow);
}
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); }
label { display: block; font: 700 12px var(--sans); letter-spacing: .04em; text-transform: uppercase; color: var(--muted); margin: 16px 0 8px; text-align: left; }
label:first-child { margin-top: 0; }
.label-note { font: 400 11px var(--sans); text-transform: none; letter-spacing: 0; color: var(--faint); }
select, textarea { width: 100%; background: #fbfcff; color: var(--ink); border: 1px solid var(--line-strong); border-radius: 10px; padding: 12px 13px; font: 15px var(--sans); }
textarea { resize: vertical; min-height: 190px; font-family: var(--mono); font-size: 13px; line-height: 1.6; }
select:focus, textarea:focus { outline: 3px solid rgba(59, 76, 202, .18); border-color: var(--blue); }
.event-summary { margin-top: 12px; padding: 13px 14px; border: 1px solid #f0d37a; border-radius: 10px; background: var(--yellow-soft); color: var(--muted); font-size: 13px; text-align: left; }
.event-summary strong { color: var(--ink); }
.form-actions { display: flex; gap: 10px; margin-top: 16px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 20px; border-radius: 10px; border: 1px solid transparent; font: 800 15px var(--sans); cursor: pointer; }
.btn.primary { background: var(--red); color: #fff; box-shadow: 0 4px 0 var(--red-dark); }
.btn.primary:hover { background: #c82f0c; color: #fff; text-decoration: none; transform: translateY(1px); box-shadow: 0 3px 0 var(--red-dark); }
.btn.ghost { background: #fff; color: var(--blue); border-color: var(--blue); }
.btn.ghost:hover { background: #f1f4ff; color: var(--blue-dark); text-decoration: none; }
.check-row { display: flex; align-items: flex-start; gap: 8px; font: 12px var(--sans); text-transform: none; letter-spacing: 0; color: var(--muted); margin: 12px 0 0; cursor: pointer; text-align: left; }
.check-row input { margin-top: 2px; accent-color: var(--red); }
label[hidden] { display: none; }

/* Results */
.result { margin-top: 18px; text-align: left; }
.result:empty { display: none; }
.status { display: flex; align-items: center; gap: 10px; padding: 13px 15px; border-radius: 10px; font: 800 15px var(--sans); margin-bottom: 10px; }
.status::before { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; color: #fff; font: 800 14px var(--sans); flex: 0 0 auto; }
.status.PASS { background: var(--green-soft); color: #127a45; border: 1px solid #a9dfbd; }
.status.PASS::before { content: "✓"; background: var(--green); }
.status.ISSUES { background: #fde8e6; color: var(--red-dark); border: 1px solid #f3b8b1; }
.status.ISSUES::before { content: "✕"; background: var(--red-dark); }
.status.UNKNOWN { background: var(--yellow-soft); color: #8a5a00; border: 1px solid #ecd18a; }
.status.UNKNOWN::before { content: "?"; background: var(--amber); }
.status.ERROR { background: #fde8e6; color: var(--red-dark); border: 1px solid #f3b8b1; }
.status.ERROR::before { content: "!"; background: var(--red-dark); }
.result ul { margin: 8px 0 0; padding-left: 20px; color: var(--muted); font-size: 13px; }
.result li { margin: 6px 0; }
.result .muted { color: var(--muted); font-size: 13px; }
.result details.checked { margin-top: 10px; border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; background: #fbfcff; }
.result details.checked summary { color: var(--ink); font-size: 13px; }
.result details.checked ul { margin-top: 8px; }

/* Section and card grids */
.section { padding: 42px 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.text-link { font-size: 14px; font-weight: 700; }
.event-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.guide-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.event-card {
  display: block;
  padding: 18px;
  border: 1px solid var(--line);
  border-top: 4px solid var(--blue);
  border-radius: 13px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 8px 24px rgba(29, 44, 94, .05);
  transition: border-color .15s, transform .15s, box-shadow .15s;
}
.event-card:nth-child(3n+2) { border-top-color: var(--red); }
.event-card:nth-child(3n) { border-top-color: var(--yellow); }
.event-card:hover { text-decoration: none; border-color: var(--blue); transform: translateY(-3px); box-shadow: 0 14px 30px rgba(29, 44, 94, .10); }
.event-top { display: flex; justify-content: space-between; gap: 10px; align-items: center; margin-bottom: 12px; }
.badge { display: inline-block; border: 1px solid #b9c5e4; color: var(--blue); border-radius: 999px; padding: 3px 10px; font: 800 10px var(--sans); letter-spacing: .06em; text-transform: uppercase; background: #f3f6ff; }
.badge.subtle { color: var(--muted); border-color: var(--line); background: var(--surface-soft); }
.mono { font: 700 11px var(--sans); color: #6b4b00; background: var(--yellow-soft); border-radius: 999px; padding: 3px 8px; }
.muted { color: var(--muted); }
.event-card p { min-height: 42px; margin: 0 0 14px; font-size: 13px; }
.event-meta { display: flex; flex-direction: column; gap: 4px; color: var(--faint); font: 12px var(--sans); }
.event-meta a { color: var(--blue); font-weight: 600; }
.guide-card {
  display: block;
  padding: 22px;
  border: 1px solid var(--line);
  border-top: 4px solid var(--red);
  border-radius: 14px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 8px 24px rgba(29, 44, 94, .05);
}
.guide-card:nth-child(2) { border-top-color: var(--blue); }
.guide-card:hover { text-decoration: none; border-color: var(--blue); transform: translateY(-2px); }
.guide-card h3 { margin: 0 0 10px; font-size: 1.45rem; }
.guide-card p { color: var(--muted); margin: 0 0 16px; font-size: 14px; }
.guide-card .text-link { font-size: 13px; }
.rule-table { width: 100%; border-collapse: collapse; margin: 14px 0 22px; font-size: 14px; background: #fff; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.rule-table th, .rule-table td { text-align: left; vertical-align: top; padding: 11px 13px; border-bottom: 1px solid var(--line); }
.rule-table th { color: var(--blue); font: 700 11px var(--sans); text-transform: uppercase; letter-spacing: .05em; background: #f3f6ff; }
.rule-table td { color: var(--muted); }
.rule-table td:first-child { color: var(--ink); font-weight: 600; }
.rule-table tr:last-child td { border-bottom: 0; }

/* Page heads, panels, prose */
.page-head { padding: 52px 0 26px; }
.page-head h1 { font-size: clamp(2.6rem, 6vw, 4.6rem); max-width: 960px; }
.back { display: inline-block; font: 700 12px var(--sans); margin-bottom: 18px; color: var(--muted); }
.back:hover { color: var(--red); }
.badge-row { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.panel { padding: 22px; }
.quick-answer { border-left: 5px solid var(--yellow); background: var(--yellow-soft); padding: 2px 18px 12px; margin: 0 0 18px; border-radius: 0 12px 12px 0; }
.quick-answer h2 { font-size: 1.5rem; margin-top: 14px; }
.quick-answer p { color: var(--muted); font-size: 14px; margin: 6px 0; }
.facts { display: grid; grid-template-columns: 150px 1fr; gap: 10px 14px; margin: 0; }
.facts dt { color: var(--faint); font: 700 11px var(--sans); text-transform: uppercase; letter-spacing: .04em; }
.facts dd { margin: 0; color: var(--ink); font-size: 14px; overflow-wrap: anywhere; }
.cta-panel { margin-top: 16px; }
.source-line { color: var(--faint); font-size: 12px; padding: 18px 0 50px; overflow-wrap: anywhere; }
.prose { max-width: 820px; padding-bottom: 60px; }
.prose h2 { margin-top: 34px; }
.prose p, .prose li { color: var(--muted); }
.prose li { margin: 6px 0; }
.faq { max-width: 820px; padding-bottom: 60px; }
details { border-bottom: 1px solid var(--line); padding: 16px 0; }
summary { cursor: pointer; font-weight: 700; color: var(--ink); }
details p { color: var(--muted); margin: 10px 0 0; }
.note { margin-top: 28px; }
.notice { border-left: 4px solid var(--yellow); background: var(--yellow-soft); padding: 9px 12px; color: #805a00; font-size: 12px; }
.warning { border-left: 4px solid var(--amber); background: var(--yellow-soft); padding: 9px 12px; color: #805a00; font-size: 13px; margin: 14px 0 0; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 30px 0 42px; color: var(--faint); font-size: 12px; background: rgba(255,255,255,.55); }
.footer-inner { display: flex; justify-content: space-between; gap: 30px; }
.site-footer strong { color: var(--ink); font-family: var(--display); font-size: 20px; }
.site-footer p { max-width: 640px; margin: 6px 0 0; }
.footer-links { display: flex; flex-direction: column; gap: 7px; white-space: nowrap; }
.footer-links a { color: var(--muted); font-weight: 600; }

@media (max-width: 900px) {
  .hero { padding-top: 44px; }
  .event-grid, .guide-grid { grid-template-columns: 1fr 1fr; }
  .method-strip, .detail-grid { grid-template-columns: 1fr; gap: 20px; }
}
@media (max-width: 620px) {
  .wrap { width: min(100% - 28px, 1120px); }
  .header-inner { min-height: 58px; gap: 8px; }
  .brand { font-size: 18px; gap: 6px; }
  .brand-mark { width: 28px; height: 28px; font-size: 10px; border-radius: 7px; }
  .nav { gap: 8px; flex-wrap: nowrap; }
  .nav a { font-size: 11px; }
  h1 { font-size: clamp(2.8rem, 13vw, 4rem); }
  .hero { padding: 36px 0 24px; }
  .checker-panel { padding: 18px; margin-top: 22px; }
  .event-grid, .guide-grid { grid-template-columns: 1fr; }
  .section-head { align-items: start; flex-direction: column; gap: 8px; }
  .facts { grid-template-columns: 110px 1fr; }
  .footer-inner { flex-direction: column; gap: 18px; }
}