:root {
  --navy-950: #071d2b;
  --navy-900: #0b2b3d;
  --navy-800: #123e54;
  --teal-700: #a62431;
  --teal-600: #c22f3c;
  --teal-500: #d94343;
  --teal-100: #f8e7e9;
  --gold-500: #c8933f;
  --gold-100: #fbf2df;
  --red-500: #d94343;
  --ink: #162b3a;
  --muted: #5c6f7d;
  --line: #dce6ea;
  --surface: #ffffff;
  --surface-soft: #f4f8f9;
  --surface-warm: #faf8f3;
  --surface-paper: #f4f0e8;
  --surface-mist: #e7eceb;
  --surface-ivory: #fbfaf7;
  --shadow-sm: 0 4px 14px rgba(7, 29, 43, .06);
  --shadow-md: 0 10px 30px rgba(7, 29, 43, .1);
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --container: 1200px;
  --section: clamp(72px, 8vw, 116px);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { color: inherit; }
p, ul, ol { margin-top: 0; }
h1, h2, h3, h4 {
  margin-top: 0;
  color: var(--navy-950);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -.025em;
}
h1 { font-size: clamp(2.35rem, 5.2vw, 4.8rem); }
h2 { font-size: clamp(1.9rem, 3.2vw, 3rem); }
h3 { font-size: clamp(1.2rem, 1.8vw, 1.5rem); }
small { color: var(--muted); }
::selection { color: white; background: var(--teal-700); }
:focus-visible { outline: 3px solid rgba(217, 67, 67, .42); outline-offset: 3px; }

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  color: #fff;
  background: var(--navy-950);
  border-radius: 8px;
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.narrow { width: min(calc(100% - 40px), 840px); margin-inline: auto; }
.section { padding-block: var(--section); }
.section-sm { padding-block: clamp(48px, 6vw, 76px); }
.surface-soft { background: var(--surface-soft); }
.surface-dark { color: #dbe7ec; background: var(--navy-950); }
.surface-dark h2, .surface-dark h3 { color: #fff; }
.surface-warm { background: var(--surface-warm); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 18px;
  color: var(--teal-700);
  font-size: .82rem;
  font-weight: 800;
  letter-spacing: .15em;
  text-transform: uppercase;
}
.eyebrow::before { width: 28px; height: 2px; content: ""; background: currentColor; }
.section-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, .7fr); gap: 52px; align-items: end; margin-bottom: 48px; }
.section-heading > * { margin-bottom: 0; }
.section-heading p { color: var(--muted); font-size: 1.06rem; }
.lead { color: var(--muted); font-size: clamp(1.05rem, 1.6vw, 1.22rem); }
.text-muted { color: var(--muted); }
.text-teal { color: var(--teal-700); }
.text-gold { color: var(--gold-500); }
.kicker { color: var(--teal-700); font-weight: 700; }
.stack > * + * { margin-top: 24px; }
.flow > * + * { margin-top: 16px; }
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.cluster { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.list-clean { margin: 0; padding: 0; list-style: none; }
.check-list { display: grid; gap: 13px; margin: 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 30px; }
.check-list li::before {
  position: absolute;
  top: .42em;
  left: 0;
  width: 18px;
  height: 18px;
  color: var(--teal-700);
  content: "✓";
  font-size: .8rem;
  font-weight: 900;
  line-height: 16px;
  text-align: center;
  background: var(--teal-100);
  border-radius: 50%;
}
.tag { display: inline-flex; padding: 5px 11px; color: var(--teal-700); font-size: .76rem; font-weight: 750; background: var(--teal-100); border-radius: 999px; }
.note { padding: 20px 22px; color: #755b31; background: var(--gold-100); border: 1px solid #eed9b3; border-radius: var(--radius-sm); }
.notice { padding: 18px 20px; color: var(--navy-800); background: #edf7fa; border-left: 4px solid var(--teal-600); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}