:root{
  --bg:#f6f7f9; --card:#fff; --ink:#15181d; --muted:#6b7280; --line:#e6e8eb;
  --brand:#1457ff; --brand-ink:#fff; --accent:#0a7d4b; --warn:#b4531a; --radius:14px;
  --shadow:0 1px 2px rgba(16,24,40,.06),0 8px 24px rgba(16,24,40,.06);
}
*{box-sizing:border-box}
body{margin:0;font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header.site{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
header.site .wrap{display:flex;align-items:center;gap:18px;height:62px}
.logo{font-weight:800;letter-spacing:-.02em;font-size:20px;display:flex;align-items:center;gap:8px}
.logo .dot{width:22px;height:22px;border-radius:7px;background:var(--brand);display:inline-block}
nav.main{display:flex;gap:18px;margin-left:8px;color:var(--muted);font-weight:500}
nav.main a:hover{color:var(--ink)}
.spacer{flex:1}
.hdr-right{display:flex;align-items:center;gap:16px;color:var(--muted)}
.hdr-right a{display:flex;align-items:center;gap:6px}
.pill{background:#eef2ff;color:var(--brand);border-radius:999px;padding:2px 9px;font-size:12px;font-weight:700}
.hero{padding:34px 0 10px}
.hero h1{font-size:30px;letter-spacing:-.02em;margin:0 0 6px}
.hero p{color:var(--muted);margin:0}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding:22px 0 50px}
@media(max-width:820px){.grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:540px){.grid{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  display:flex;flex-direction:column;transition:transform .12s ease,box-shadow .12s ease}
.card:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(16,24,40,.12)}
.thumb{aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#eef1f6,#e3e8f0)}
.phone{width:72px;height:128px;border-radius:14px;background:#20242c;border:3px solid #2b3039;position:relative;box-shadow:inset 0 0 0 2px #3a414c}
.phone::after{content:"";position:absolute;top:8px;left:50%;transform:translateX(-50%);width:26px;height:4px;border-radius:3px;background:#444b57}
.phone.sm{width:58px;height:104px}
.phone.lg{width:92px;height:138px}
.card .body{padding:14px 15px 16px;display:flex;flex-direction:column;gap:4px;flex:1}
.card .name{font-weight:700}
.card .meta{color:var(--muted);font-size:13px}
.card .blurb{color:var(--muted);font-size:13px;margin:4px 0 10px;flex:1}
.price{font-weight:800;font-size:17px}
.btn{appearance:none;border:0;border-radius:10px;padding:11px 16px;font-weight:700;font-size:14px;cursor:pointer;
  background:var(--brand);color:var(--brand-ink);transition:filter .12s}
.btn:hover{filter:brightness(1.07)}
.btn.sec{background:#eef1f6;color:var(--ink)}
.btn.ghost{background:transparent;border:1px solid var(--line)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.block{width:100%}
.detail{display:grid;grid-template-columns:1.1fr 1fr;gap:34px;padding:30px 0 60px}
@media(max-width:820px){.detail{grid-template-columns:1fr}}
.detail .big{aspect-ratio:1;border-radius:18px;background:linear-gradient(135deg,#eef1f6,#e3e8f0);display:flex;align-items:center;justify-content:center}
.detail h1{font-size:26px;margin:.1em 0 .2em}
.detail .desc{color:#374151;margin:14px 0}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.auth{max-width:420px;margin:48px auto}
.auth h1{font-size:22px;margin:0 0 4px}
.auth p.sub{color:var(--muted);margin:0 0 18px}
label{display:block;font-weight:600;font-size:13px;margin:12px 0 5px}
input[type=text],input[type=password],input[type=email],select{
  width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:10px;font-size:15px;background:#fff}
input:focus,select:focus{outline:2px solid #c7d6ff;border-color:var(--brand)}
.err{color:#b42318;font-size:13px;margin-top:10px;min-height:16px}
.hint{color:var(--muted);font-size:12px;margin-top:6px}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{text-align:left;padding:7px 9px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--muted);font-weight:600;position:sticky;top:62px;background:var(--bg)}
.tag{display:inline-block;border-radius:6px;padding:1px 7px;font-size:11px;font-weight:700}
.tag.agent{background:#fde8e8;color:#b42318}
.tag.human{background:#e7f6ee;color:#0a7d4b}
.cartline{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--line)}
.cartline .thumb{width:70px;aspect-ratio:4/5;border-radius:10px;flex:none}
.summary{display:flex;justify-content:space-between;padding:7px 0}
.summary.total{font-weight:800;font-size:17px;border-top:1px solid var(--line);margin-top:8px;padding-top:12px}
.note{background:#f3f6ff;border:1px solid #d9e3ff;border-radius:10px;padding:10px 12px;font-size:13px;color:#2a3b66}


.slide{position:relative;height:52px;border-radius:12px;background:#eef1f6;overflow:hidden;user-select:none;touch-action:none}
.slide .fill{position:absolute;inset:0;width:0;background:linear-gradient(90deg,#1457ff,#4b86ff);transition:background .2s}
.slide .lbl{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--muted);font-weight:700;font-size:14px;pointer-events:none}
.slide .knob{position:absolute;top:4px;left:4px;width:44px;height:44px;border-radius:9px;background:#fff;box-shadow:var(--shadow);
  display:flex;align-items:center;justify-content:center;cursor:grab;z-index:2}
.slide.slid .knob{cursor:default}
.slide.slid .lbl{color:#fff}

.offscreen{position:absolute!important;left:-9999px!important;top:auto!important;width:1px;height:1px;overflow:hidden}
footer.site{border-top:1px solid var(--line);color:var(--muted);font-size:13px;padding:26px 0;margin-top:30px}