:root{
  --bg:#fff9f2;
  --card:#ffffff;
  --text:#241d18;
  --muted:#86786d;
  --line:#eee4da;
  --accent:#ff6b35;
  --accent-2:#fff0e8;
  --shadow:0 10px 30px rgba(90,57,33,.08);
  --radius:22px;
}
*{box-sizing:border-box}
body{
  margin:0;background:linear-gradient(180deg,#fffaf4 0,#fff 38%,#fffaf7 100%);
  color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Microsoft YaHei",sans-serif;
}
button,input{font:inherit}
button{cursor:pointer}
.app-shell{max-width:760px;margin:0 auto;min-height:100vh;padding:18px 16px 96px}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:8px 2px 16px}
h1{margin:4px 0 0;font-size:30px;letter-spacing:-.8px}
h2{margin:3px 0 0;font-size:24px}
h3{margin:0}
.eyebrow{font-size:12px;color:var(--muted);font-weight:700;letter-spacing:.5px}
.card{background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero{padding:18px}
.hero-row{display:flex;justify-content:space-between;gap:16px;align-items:end}
.muted{font-size:13px;color:var(--muted)}
.amount-wrap{display:flex;align-items:baseline;gap:5px;margin-top:4px}
.amount-wrap span{font-size:20px;font-weight:800}
.amount-wrap input{
  width:130px;border:0;outline:none;background:transparent;font-size:42px;font-weight:850;color:var(--text)
}
.primary,.secondary,.soft-btn,.text-btn,.icon-btn,.tab,.chip{
  border:0;border-radius:14px
}
.primary{background:var(--accent);color:white;font-weight:800;padding:12px 16px}
.primary:active{transform:scale(.98)}
.primary.full{width:100%;margin-top:14px}
.secondary{background:#f7f2ed;color:var(--text);font-weight:750;padding:11px 14px}
.icon-btn{width:42px;height:42px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
.search-row{display:flex;gap:10px;margin-top:14px}
.search-box{flex:1;display:flex;align-items:center;gap:8px;padding:0 14px;background:#fff;border:1px solid var(--line);border-radius:16px}
.search-box input{width:100%;height:48px;border:0;outline:none;background:transparent}
.soft-btn{background:#fff;border:1px solid var(--line);padding:0 16px;font-weight:750}
.status-strip{display:flex;justify-content:space-between;align-items:center;margin:12px 4px 4px;font-size:12px;color:var(--muted)}
.status-strip strong{color:var(--accent);margin-right:6px}
.text-btn{background:transparent;color:var(--muted);padding:6px}
.platform-tabs{display:flex;gap:8px;overflow:auto;padding:10px 0 6px;scrollbar-width:none}
.platform-tabs::-webkit-scrollbar{display:none}
.tab{white-space:nowrap;background:#fff;border:1px solid var(--line);padding:9px 13px;color:#5f534a;font-weight:700}
.tab.active{background:var(--text);color:#fff;border-color:var(--text)}
.filters{padding:14px;margin-top:8px}
.filter-title{font-size:13px;font-weight:800;margin-bottom:10px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{background:#f7f2ed;color:#6f6258;padding:8px 11px;font-size:12px}
.chip.active{background:var(--accent-2);color:#c94a1c}
.section-title-row{display:flex;justify-content:space-between;align-items:end;margin:22px 2px 12px}
.count-pill{font-size:12px;background:#f7f2ed;border-radius:999px;padding:7px 10px;color:var(--muted)}
.coupon-list{display:grid;gap:12px}
.coupon-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px;box-shadow:0 8px 24px rgba(80,50,28,.06)}
.coupon-top{display:flex;justify-content:space-between;gap:16px}
.platform-line{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.platform-badge{display:inline-flex;padding:5px 8px;border-radius:8px;background:#f5efe9;font-size:11px;font-weight:850}
.freshness{font-size:11px;color:var(--muted)}
.coupon-title{font-size:17px;margin:0 0 7px}
.coupon-meta{font-size:12px;color:var(--muted);line-height:1.6}
.discount{text-align:right;min-width:74px}
.discount-value{display:block;font-size:26px;font-weight:900;color:var(--accent)}
.discount-label{font-size:11px;color:var(--muted)}
.price-preview{margin-top:12px;background:#fff8f4;border-radius:12px;padding:10px 12px;font-size:13px}
.price-preview strong{color:var(--accent)}
.tag-row{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.tag{font-size:11px;padding:5px 8px;background:#f8f5f2;border-radius:999px;color:#6e6258}
.tag.warn{background:#fff0e8;color:#bd4c24}
.coupon-actions{display:grid;grid-template-columns:1fr 1.25fr;gap:9px;margin-top:14px}
.claim-btn.disabled{background:#cfc7c1;cursor:not-allowed}
.best-deal{margin-top:14px;border-top:1px dashed var(--line);padding-top:14px;font-size:14px;line-height:1.65}
.best-deal strong{font-size:18px;color:var(--accent)}
.hidden{display:none}
.bottom-nav{
  position:fixed;left:50%;bottom:0;transform:translateX(-50%);width:min(760px,100%);
  display:grid;grid-template-columns:repeat(4,1fr);background:rgba(255,255,255,.94);backdrop-filter:blur(18px);
  border-top:1px solid var(--line);padding:8px 8px calc(8px + env(safe-area-inset-bottom))
}
.nav-item{border:0;background:transparent;color:#9a8f86;padding:5px 0;display:grid;gap:2px;place-items:center}
.nav-item span{font-size:19px}.nav-item b{font-size:11px}.nav-item.active{color:var(--accent)}
.dialog{border:0;padding:0;background:transparent;width:min(92vw,520px)}
.dialog::backdrop{background:rgba(28,20,15,.34);backdrop-filter:blur(3px)}
.dialog-card{background:#fff;border-radius:24px;padding:18px;border:1px solid var(--line);box-shadow:var(--shadow)}
.dialog-head{display:flex;justify-content:space-between;align-items:start;margin-bottom:10px}
.dialog-card p{font-size:14px;color:#62574f;line-height:1.75}
.switch-row{display:flex;justify-content:space-between;align-items:center;padding:13px 2px;border-bottom:1px solid var(--line)}
.switch-row span{display:grid;gap:3px}.switch-row small{color:var(--muted)}
.switch-row input{width:22px;height:22px}
.field{display:grid;gap:7px;margin-top:14px}.field label{font-size:12px;font-weight:800;color:var(--muted)}
.field input{height:44px;border:1px solid var(--line);border-radius:12px;padding:0 12px;outline:none}
.empty{background:#fff;border:1px dashed var(--line);border-radius:20px;padding:30px;text-align:center;color:var(--muted)}
@media (min-width:700px){
  .coupon-list{grid-template-columns:1fr 1fr}
}