:root {
  --bg: #f9f9ff;
  --surface: #ffffff;
  --surface-soft: #f1f3ff;
  --ink: #111827;
  --muted: #64748b;
  --line: #e5e7eb;
  --amber: #f59e0b;
  --amber-soft: #fef3c7;
  --green: #10b981;
  --red: #ef4444;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 14px 32px;
  background: rgba(255,255,255,.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.brand { font-weight: 800; font-size: 20px; white-space: nowrap; }
.brand span { color: var(--amber); }
nav { display: flex; gap: 4px; flex: 1; overflow-x: auto; }
nav a {
  padding: 8px 10px;
  border-radius: 8px;
  color: #475569;
  font-size: 14px;
  white-space: nowrap;
}
nav a.active, nav a:hover { background: var(--amber-soft); color: #713f12; }
main { width: min(1280px, calc(100% - 48px)); margin: 0 auto; }
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 24px;
  padding: 40px 0 24px;
}
.eyebrow, .label {
  color: #92400e;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .02em;
  text-transform: uppercase;
}
h1 { margin: 8px 0 12px; font-size: clamp(30px, 4vw, 48px); line-height: 1.12; letter-spacing: 0; }
h2 { margin: 0; font-size: 24px; }
h3 { margin: 6px 0 8px; font-size: 18px; }
.lead { max-width: 780px; color: #475569; font-size: 17px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--line);
  font-weight: 700;
  cursor: pointer;
  background: #fff;
}
.button.small { min-height: 34px; padding: 8px 12px; font-size: 14px; }
.button.primary { background: var(--amber); color: #fff; border-color: var(--amber); }
.button.secondary { background: #fff; color: #0f172a; }
.trust-panel, .section, footer {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 1px 2px rgba(15, 23, 42, .04);
}
.trust-panel { padding: 20px; }
.trust-panel p { margin: 6px 0; color: #475569; }
.section { padding: 24px; margin: 20px 0; }
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 18px;
}
.section-head p { max-width: 620px; margin: 0; color: var(--muted); }
.card-grid, .link-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.card, .link-card, .coupon-card, .step {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}
.card p, .link-card span { color: #64748b; margin: 0; }
.link-card { display: grid; gap: 8px; }
.link-card:hover { border-color: var(--amber); background: #fffdf7; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; }
table { width: 100%; border-collapse: collapse; background: #fff; min-width: 720px; }
th, td { padding: 13px 14px; border-bottom: 1px solid var(--line); text-align: left; font-size: 14px; vertical-align: top; }
th { background: #f8fafc; color: #475569; font-size: 12px; }
tr:last-child td { border-bottom: 0; }
.steps { display: grid; gap: 12px; }
.step { display: grid; grid-template-columns: 36px 1fr; gap: 14px; align-items: start; }
.step span {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  background: var(--amber);
  color: #fff;
  border-radius: 8px;
  font-weight: 800;
}
.step p { margin: 0; color: var(--muted); }
.notes { display: grid; gap: 10px; margin: 0; padding-left: 20px; }
.notes li { padding: 10px 12px; background: #fff7ed; border: 1px solid #fed7aa; border-radius: 8px; }
.coupon-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: center;
  background: linear-gradient(135deg, #fff7ed, #ffffff);
}
.coupon-card strong { font-size: 34px; letter-spacing: .04em; }
.status {
  display: inline-flex;
  margin-left: 10px;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
}
.status.good { color: #047857; background: #d1fae5; }
.status.warn { color: #92400e; background: #fef3c7; }
.status.bad { color: #991b1b; background: #fee2e2; }
.faq-list { display: grid; gap: 10px; }
details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
}
summary { cursor: pointer; font-weight: 700; }
details p { color: var(--muted); margin-bottom: 0; }
.subscribe {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 20px;
  background: #111827;
  color: #fff;
}
.subscribe p { color: #cbd5e1; }
.subscribe form { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
input, textarea, select {
  min-height: 42px;
  min-width: 260px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  padding: 0 12px;
  font: inherit;
}
textarea { min-height: 110px; padding: 10px 12px; }
footer {
  width: min(1280px, calc(100% - 48px));
  margin: 28px auto;
  padding: 22px 24px;
  color: #64748b;
}
footer strong { color: var(--ink); }
.form-status { min-width: 100%; margin: 4px 0 0; font-size: 13px; }
.admin-body { background: #f8fafc; }
.admin-shell { width: min(1240px, calc(100% - 40px)); margin: 24px auto; }
.admin-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}
.admin-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}
.admin-nav a {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font-size: 14px;
}
.admin-nav a.active { background: var(--amber-soft); color: #713f12; border-color: #fcd34d; }
.admin-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 18px;
}
.admin-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.admin-form-grid label { display: grid; gap: 6px; color: #334155; font-size: 14px; }
.admin-form-grid .wide { grid-column: 1 / -1; }
.admin-form-grid input, .admin-form-grid textarea, .admin-form-grid select { width: 100%; min-width: 0; }
.admin-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 16px; }
.inline-form { display: inline; }
.danger { color: #b91c1c; }
.muted { color: var(--muted); }
.login-card {
  width: min(420px, calc(100% - 32px));
  margin: 80px auto;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
}
.login-card label { display: grid; gap: 6px; margin-bottom: 14px; }
.login-card input { width: 100%; min-width: 0; }
@media (max-width: 980px) {
  .topbar { padding: 12px 16px; flex-wrap: wrap; }
  main, footer { width: min(100% - 28px, 1280px); }
  .hero, .subscribe { grid-template-columns: 1fr; }
  .card-grid, .link-grid { grid-template-columns: 1fr; }
  .section-head { display: block; }
  .subscribe form { flex-direction: column; align-items: stretch; }
  input, textarea, select { min-width: 0; width: 100%; }
  .admin-form-grid { grid-template-columns: 1fr; }
}