:root {
  color-scheme: light;
  --ink: #18212b;
  --muted: #637080;
  --line: #d9e0e7;
  --surface: #ffffff;
  --wash: #f3f6f8;
  --brand: #0c6b62;
  --brand-dark: #064b45;
  --accent: #c96e32;
  font-family: Inter, "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: var(--wash); line-height: 1.6; }
a { color: inherit; }
.site-header { position: sticky; top: 0; z-index: 2; display: flex; align-items: center; gap: 24px; padding: 14px clamp(18px, 5vw, 72px); background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); }
.brand { color: var(--brand-dark); font-size: 1.15rem; font-weight: 800; text-decoration: none; white-space: nowrap; }
.brand span { display: block; color: var(--muted); font-size: .72rem; font-weight: 600; letter-spacing: .04em; }
nav { display: flex; flex: 1; justify-content: center; gap: 18px; flex-wrap: wrap; }
nav a { color: var(--muted); font-size: .9rem; text-decoration: none; }
nav a:hover, nav a:focus { color: var(--brand); }
.page-shell { max-width: 1180px; margin: 0 auto; padding: 48px 20px 72px; }
.hero { display: grid; grid-template-columns: 1.25fr .75fr; gap: 30px; align-items: end; padding: 34px 0 50px; }
.eyebrow { color: var(--accent); font-size: .76rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
h1 { margin: 10px 0 14px; font-size: clamp(2.3rem, 5vw, 4.4rem); line-height: 1.08; }
h2 { margin: 0 0 14px; font-size: 1.55rem; }
.lede { max-width: 620px; color: var(--muted); font-size: 1.08rem; }
.hero-note, .panel, .plan-card, .order-card { background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 22px; }
.hero-note { border-top: 4px solid var(--brand); }
.section-heading { display: flex; justify-content: space-between; gap: 18px; align-items: end; margin: 22px 0 18px; }
.muted { color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; }
.plan-card { display: flex; flex-direction: column; gap: 10px; }
.plan-card.recommended { border-color: var(--brand); box-shadow: 0 7px 22px rgba(12,107,98,.12); }
.price { font-size: 1.8rem; font-weight: 800; color: var(--brand-dark); }
.price small { color: var(--muted); font-size: .82rem; font-weight: 500; }
.button { border: 1px solid var(--brand); border-radius: 4px; padding: 9px 15px; font: inherit; cursor: pointer; }
.button-primary { color: #fff; background: var(--brand); }
.button-primary:hover { background: var(--brand-dark); }
.button-secondary { color: var(--brand-dark); background: transparent; }
.button:disabled { cursor: not-allowed; opacity: .5; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.form-grid { display: grid; gap: 14px; max-width: 560px; }
label { display: grid; gap: 5px; color: var(--muted); font-size: .88rem; }
input, textarea { width: 100%; border: 1px solid var(--line); border-radius: 4px; padding: 10px; font: inherit; background: #fff; }
.status { padding: 11px 14px; border-left: 3px solid var(--accent); background: #fff7f1; }
.qr { max-width: 240px; max-height: 240px; object-fit: contain; border: 1px solid var(--line); background: #fff; }
.order-list { display: grid; gap: 12px; }
.order-card { display: grid; gap: 4px; }
.legal { max-width: 760px; }
.legal h3 { margin-top: 26px; }
.site-footer { display: flex; justify-content: space-between; gap: 18px; padding: 22px clamp(18px, 5vw, 72px); color: var(--muted); font-size: .78rem; border-top: 1px solid var(--line); }
@media (max-width: 760px) { .site-header { flex-wrap: wrap; } nav { order: 3; flex-basis: 100%; justify-content: flex-start; } .hero { grid-template-columns: 1fr; } .site-footer { flex-direction: column; } }