/* =====================================================================
   media.hvtong.com — 前端设计系统 v2
   2026-10-09 整体重设计:科技感 · 深色 hero + 玻璃拟态导航 + 渐变主色
   容器最大宽度 1600px
   ===================================================================== */
:root{
  --maxw:1600px;
  --brand:#4f46e5;
  --brand-2:#7c3aed;
  --brand-d:#4338ca;
  --accent:#06b6d4;
  --ink:#0f172a;
  --ink-2:#334155;
  --muted:#64748b;
  --line:#e6eaf2;
  --line-2:#eef1f7;
  --bg:#f5f7fc;
  --card:#ffffff;
  --ok:#0ea472;
  --warn:#d9930f;
  --danger:#e11d48;
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.05),0 1px 3px rgba(15,23,42,.04);
  --shadow:0 12px 32px -14px rgba(30,27,75,.22),0 4px 10px -6px rgba(15,23,42,.08);
  --shadow-lg:0 28px 70px -28px rgba(30,27,75,.38);
  --grad:linear-gradient(120deg,#4f46e5 0%,#7c3aed 52%,#06b6d4 135%);
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font:14px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;/* padding:0 clamp(20px,3vw,44px) */}
.muted{color:var(--muted)}
.grad-txt{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* =========================== Header =========================== */
header.hd{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:saturate(180%) blur(14px);backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line-2);
  box-shadow:0 1px 0 rgba(15,23,42,.02);
}
.hd-in{display:flex;align-items:center;gap:26px;height:68px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:.2px;font-size:18px;white-space:nowrap;color:var(--ink)}
.logo .mark{
  width:34px;height:34px;border-radius:10px;background:var(--grad);
  color:#fff;display:grid;place-items:center;font-size:17px;font-weight:800;
  box-shadow:0 8px 18px -8px rgba(79,70,229,.85);
}
.logo .wm{display:inline-block}
.logo .wm em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
nav.mn{display:flex;gap:6px;flex:1;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}
nav.mn::-webkit-scrollbar{display:none}
nav.mn a{
  color:#202224;/* font-weight:600; */font-size:16px;padding:8px 14px;border-radius:999px;
  white-space:nowrap;transition:.16s;
}
nav.mn a:hover{color:var(--brand);background:#f1f2fb}
nav.mn a.on{color:#7443eb;/* background:var(--grad); *//* box-shadow:0 8px 18px -10px rgba(79,70,229,.9) */}
.hd-act{display:flex;gap:8px;align-items:center}
.hd-act form{display:inline-flex}

/* =========================== Buttons =========================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  background:var(--grad);color:#fff;border:0;border-radius:var(--radius-sm);
  padding:10px 18px;font-weight:700;font-size:13.5px;cursor:pointer;white-space:nowrap;
  box-shadow:0 10px 22px -12px rgba(79,70,229,.95);
  transition:transform .16s,box-shadow .16s,filter .16s;
}
.btn:hover{transform:translateY(-1px);box-shadow:0 16px 30px -14px rgba(79,70,229,1);filter:brightness(1.03)}
.btn:active{transform:translateY(0)}
.btn.ghost{background:#fff;color:var(--brand);border:1px solid #dcdff3;box-shadow:none}
.btn.ghost:hover{border-color:var(--brand);background:#f7f8ff}
.btn.gray{background:#eef1f7;color:var(--ink-2);box-shadow:none}
.btn.gray:hover{background:#e3e8f2}
.btn.sm{padding:7px 13px;font-size:12.5px;border-radius:9px}
.btn.block{width:100%}

/* =========================== Hero =========================== */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(125deg,#0b1120 0%,#1e1b4b 46%,#4f46e5 100%);
  padding:62px 0 58px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(ellipse at 18% 0%,#000 0%,transparent 72%);
  mask-image:radial-gradient(ellipse at 18% 0%,#000 0%,transparent 72%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;width:680px;height:680px;right:-180px;top:-280px;border-radius:50%;
  background:radial-gradient(circle,rgba(6,182,212,.5),transparent 62%);filter:blur(6px);pointer-events:none;
}
.hero-in{position:relative;z-index:1;display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.4px;color:#c7d2fe;
  background:rgba(255,255,255,.09);border:1px solid rgba(199,210,254,.3);
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:#22d3ee;box-shadow:0 0 10px #22d3ee}
.hero h1{font-size:40px;line-height:1.2;letter-spacing:-.6px;font-weight:800;margin-bottom:14px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,#a5b4fc,#67e8f9);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{opacity:.9;max-width:680px;font-size:15px;color:#e2e8f0}
.hero p b{color:#fff;font-weight:700}
.hero .kpis{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap}
.hero .kpi{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-radius:14px;padding:15px 24px;min-width:158px;
}
.hero .kpi b{font-size:27px;font-weight:800;display:block;line-height:1.15;letter-spacing:-.5px}
.hero .kpi span{font-size:12.5px;color:#cbd5e1}
.hero-card{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-radius:18px;padding:22px;box-shadow:var(--shadow-lg);
}
.hero-card h4{font-size:13px;color:#c7d2fe;font-weight:700;letter-spacing:.3px;margin-bottom:14px}
.hero-card .step{display:flex;gap:12px;align-items:flex-start;padding:9px 0}
.hero-card .step .n{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;background:rgba(255,255,255,.14);
  display:grid;place-items:center;font-size:12.5px;font-weight:800;color:#fff;
}
.hero-card .step b{color:#fff;font-size:13.5px;display:block}
.hero-card .step span{color:#cbd5e1;font-size:12.5px}

/* =========================== Section / Tabs / Search =========================== */
.sect{padding:34px 0 10px}
.sect-hd{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:4px}
.sect-hd h2{font-size:21px;font-weight:800;letter-spacing:-.3px}
.tabs{display:flex;gap:9px;flex-wrap:wrap;margin:18px 0 0}
.tabs a{
  padding:7px 15px;border-radius:999px;background:#fff;border:1px solid var(--line);
  color:var(--ink-2);font-weight:600;font-size:13px;transition:.15s;
}
.tabs a:hover{border-color:#c9cdf0;color:var(--brand)}
.tabs a.on{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 8px 18px -12px rgba(79,70,229,.95)}
.tabs a .muted{opacity:.7;font-weight:500}
.tabs a.on .muted{color:#e0e7ff;opacity:.9}

.bar{display:flex;gap:10px;margin:16px 0 24px;flex-wrap:wrap;
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px;box-shadow:var(--shadow-sm)}
.bar input,.bar select{
  padding:11px 14px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe;
  font:inherit;color:var(--ink);min-width:0;transition:.15s;
}
.bar input:focus,.bar select:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(79,70,229,.1)}
.bar input{flex:1;min-width:220px}
.bar select{cursor:pointer}

/* =========================== Cards grid =========================== */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.card{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;display:flex;flex-direction:column;gap:10px;
  box-shadow:var(--shadow-sm);transition:transform .18s,box-shadow .18s,border-color .18s;
}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:#d9dcf5}
.card-top{display:flex;justify-content:space-between;gap:8px;align-items:center}
.tag{
  display:inline-block;font-size:12px;padding:3px 10px;border-radius:999px;
  background:#eef0ff;color:var(--brand);font-weight:700;letter-spacing:.2px;
}
.gw{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:800;color:var(--ok)}
.gw i{width:7px;height:7px;border-radius:50%;background:currentColor;box-shadow:0 0 0 3px rgba(14,164,114,.14)}
.gw.lo{color:var(--warn)}
.gw.lo i{box-shadow:0 0 0 3px rgba(217,147,15,.16)}
.card .nm{font-weight:800;font-size:16px;color:var(--ink);line-height:1.35;transition:.15s}
.card .nm:hover{color:var(--brand)}
.card .ds{color:var(--muted);font-size:12.5px;min-height:38px;line-height:1.6}
.card .meta{color:var(--muted);font-size:12px;display:flex;align-items:center;gap:8px}
.card .meta .dot{width:3px;height:3px;border-radius:50%;background:#cbd5e1}
.card .ft{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin-top:auto;border-top:1px dashed var(--line);padding-top:13px;
}
.price{color:var(--danger);font-weight:800;font-size:19px;letter-spacing:-.3px}
.price small{font-size:12px;color:var(--muted);font-weight:500}

/* =========================== Panels / Detail =========================== */
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm)}
.panel h3{font-size:16px;font-weight:800}
.detail{display:grid;grid-template-columns:1fr 380px;gap:24px;margin:28px 0;align-items:start}
.detail .aside{position:sticky;top:90px}
.tier{
  display:flex;justify-content:space-between;align-items:center;gap:10px;
  border:1.5px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:9px;
  cursor:pointer;transition:.15s;background:#fff;font-weight:600;
}
.tier:hover{border-color:#c9cdf0}
.tier.sel{border-color:var(--brand);background:#f6f6ff;box-shadow:0 0 0 4px rgba(79,70,229,.09)}
.tier .p{color:var(--danger);font-weight:800;font-size:15px}
.tier input{accent-color:var(--brand)}

/* =========================== Tables =========================== */
.tbwrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
table.tb{width:100%;border-collapse:collapse;background:#fff}
table.tb th,table.tb td{border-bottom:1px solid var(--line-2);padding:14px 18px;text-align:left;vertical-align:middle}
table.tb tr:last-child td{border-bottom:0}
table.tb th{color:var(--muted);font-weight:700;font-size:12px;letter-spacing:.3px;background:#fafbff;text-transform:uppercase}
table.tb tbody tr:hover,table.tb tr:hover{background:#fafbff}
table.tb td a{color:var(--brand);font-weight:700}

/* =========================== Alerts / misc =========================== */
.alert{
  display:flex;align-items:center;gap:9px;
  background:#ecfdf5;border:1px solid #a7f3d0;color:#065f46;font-weight:600;
  padding:12px 16px;border-radius:12px;margin:16px 0;
}
.pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700;background:#eef1f7;color:var(--ink-2)}
.pill.ok{background:#e7f8f0;color:#0b6b4a}
.pill.warn{background:#fdf4e3;color:#9a6708}
.form-label{display:block;font-weight:700;font-size:13px;color:var(--ink-2);margin-bottom:6px}
.form-input{
  width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe;
  font:inherit;color:var(--ink);transition:.15s;
}
.form-input:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(79,70,229,.1)}
.page-head{margin:28px 0 18px}
.page-head h2{font-size:23px;font-weight:800;letter-spacing:-.3px}
.page-head p{color:var(--muted);margin-top:4px}

/* =========================== Footer =========================== */
footer.site-ft{
  margin-top:56px;background:#0b1120;color:#94a3b8;
  border-top:1px solid #1e293b;padding:46px 0 26px;
}
.ft-in{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:38px}
.site-ft .logo{color:#fff;margin-bottom:12px}
.site-ft .logo .wm em{color:#a5b4fc;background:none;-webkit-text-fill-color:#a5b4fc}
.site-ft p{font-size:13px;line-height:1.7;color:#94a3b8;max-width:360px}
.ft-col{display:flex;flex-direction:column;gap:9px;font-size:13px}
.ft-col b{color:#e2e8f0;font-size:13px;font-weight:800;letter-spacing:.3px;margin-bottom:3px}
.ft-col a{color:#94a3b8;transition:.15s;width:fit-content}
.ft-col a:hover{color:#c7d2fe}
.ft-btm{margin-top:32px;padding-top:18px;border-top:1px solid #1e293b;font-size:12.5px;color:#64748b;text-align:center}

/* =========================== Responsive =========================== */
@media(max-width:1100px){
  .hero-in{grid-template-columns:1fr}
  .hero-card{max-width:520px}
}
@media(max-width:960px){
  .detail{grid-template-columns:1fr}
  .detail .aside{position:static}
}
@media(max-width:820px){
  .hd-in{height:auto;padding:12px 0;flex-wrap:wrap;gap:12px 18px}
  nav.mn{order:3;width:100%;flex:1 1 100%}
  .hero{padding:44px 0}
  .hero h1{font-size:30px}
  .hero .kpi{flex:1;min-width:0;padding:12px 16px}
  .hero .kpi b{font-size:23px}
  .ft-in{grid-template-columns:1fr;gap:24px}
  .grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
}
@media(max-width:520px){
  .hero h1{font-size:25px}
  .bar{padding:8px}
  .bar input{min-width:100%}
  .card{padding:15px}
}