:root{
  --ink:#16181d;
  --ink2:#4b5158;
  --ink3:#868d96;
  --line:#e9ebee;
  --line2:#f2f4f6;
  --bg:#ffffff;
  --soft:#f8f9fb;
  --a:#03c4cc;
  --b:#7d2be9;
  --grad:linear-gradient(96deg,#03c4cc 0%,#7d2be9 100%);
  --maxw:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font:400 15px/1.78 -apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","MiSans","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img,svg{display:block}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.84);
  backdrop-filter:saturate(180%) blur(16px);
  -webkit-backdrop-filter:saturate(180%) blur(16px);
  border-bottom:1px solid var(--line);
}
.nav-in{
  max-width:var(--maxw);margin:0 auto;padding:0 24px;height:62px;
  display:flex;align-items:center;gap:40px;
}
.brand{display:flex;align-items:center;gap:9px;font-weight:600;font-size:15.5px;letter-spacing:-.2px}
.logo{
  width:26px;height:26px;border-radius:8px;background:var(--grad);
  display:grid;place-items:center;color:#fff;font-size:13px;font-weight:700;letter-spacing:0;
}
.nav nav{margin-left:auto;display:flex;align-items:center;gap:30px;font-size:13.5px;color:var(--ink2)}
.nav nav a{transition:color .18s}
.nav nav a:hover{color:var(--ink)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:38px;padding:0 18px;border-radius:9px;font-size:13.5px;font-weight:500;
  transition:transform .18s ease,box-shadow .18s ease,background .18s;
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(22,24,29,.18)}
.btn-ghost{border:1px solid var(--line);color:var(--ink2);background:#fff}
.btn-ghost:hover{border-color:#d6dae0;color:var(--ink)}
.btn-nav{height:34px;padding:0 14px;font-size:13px;border-radius:8px}

/* ---------- shell ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:76px 0}
section + section{border-top:1px solid var(--line2)}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(880px 420px at 10% -12%, rgba(3,196,204,.16), rgba(3,196,204,0) 68%),
    radial-gradient(760px 400px at 92% -6%, rgba(125,43,233,.13), rgba(125,43,233,0) 70%),
    linear-gradient(180deg,#fbfdfe 0%,#ffffff 62%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(22,24,29,.045) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(22,24,29,.045) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(75% 65% at 28% 6%,#000 0%,rgba(0,0,0,0) 78%);
  mask-image:radial-gradient(75% 65% at 28% 6%,#000 0%,rgba(0,0,0,0) 78%);
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:96px;pointer-events:none;
  background:linear-gradient(180deg,rgba(255,255,255,0),#fff 88%);
}
.hero-in{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.08fr .92fr;gap:44px;align-items:center;
  padding:78px 0 60px;
}
.hero-copy{max-width:620px}

/* 右侧抽象视觉：照片墙卡片 */
.hero-visual{position:relative;height:300px;display:flex;align-items:center;justify-content:center;pointer-events:none}
.hero-visual::before{
  content:"";position:absolute;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(3,196,204,.16) 0%,rgba(125,43,233,.10) 45%,transparent 72%);
  filter:blur(10px);
}
.hero-card{
  position:relative;width:340px;padding:15px 15px 14px;border-radius:18px;
  background:rgba(255,255,255,.94);border:1px solid var(--line);
  box-shadow:0 24px 60px rgba(22,24,29,.10),0 2px 6px rgba(22,24,29,.04);
  transform:rotate(-2deg);
}
.hc-head{display:flex;gap:6px;margin-bottom:13px}
.hc-dot{width:7px;height:7px;border-radius:50%;background:#e6e9ee}
.hc-dot:first-child{background:#dfe3e9}
.hc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.hc-grid i{display:block;aspect-ratio:1/1;border-radius:9px;position:relative;overflow:hidden}
.hc-grid i::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,255,255,.55),rgba(255,255,255,0) 55%)}
.hc-grid .t1{background:linear-gradient(140deg,#cbf2f4,#9fe3e8)}
.hc-grid .t2{background:linear-gradient(140deg,#e6d9fc,#cbb8f7)}
.hc-grid .t3{background:linear-gradient(140deg,#d9e7ff,#b9d1ff)}
.hc-grid .t4{background:linear-gradient(140deg,#ffefd7,#ffdfb5)}
.hc-grid .t5{background:linear-gradient(140deg,#dcf6e7,#b9e8c9)}
.hc-grid .t6{background:linear-gradient(140deg,#f1e5ff,#d8c3ff)}
.hc-foot{margin-top:13px;padding-top:11px;border-top:1px solid var(--line2);font-size:12px;color:var(--ink3);letter-spacing:.02em}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;color:var(--ink3);letter-spacing:.2px;
  border:1px solid var(--line);border-radius:999px;padding:5px 13px;background:#fff;
}
.eyebrow i{width:5px;height:5px;border-radius:50%;background:var(--a);display:block}
h1{
  font-size:47px;line-height:1.22;letter-spacing:-1.4px;
  margin:24px 0 0;font-weight:600;
}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{max-width:620px;margin:22px 0 0;font-size:16px;color:var(--ink2);line-height:1.85}
.actions{display:flex;gap:12px;margin-top:34px;flex-wrap:wrap}
.fineprint{margin-top:26px;font-size:12.5px;color:var(--ink3);line-height:1.8}
.fineprint a{border-bottom:1px solid var(--line);padding-bottom:1px}

/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-top:8px;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff}
.step{padding:24px 20px 26px;position:relative}
.step + .step{border-left:1px solid var(--line2)}
.step .no{font-size:11.5px;color:var(--a);letter-spacing:.14em;font-weight:600}
.step h3{font-size:14.5px;margin:10px 0 6px;font-weight:600;letter-spacing:-.1px}
.step p{margin:0;font-size:12.5px;color:var(--ink3);line-height:1.7}

/* ---------- section head ---------- */
.head{max-width:660px}
.head .kicker{font-size:12px;letter-spacing:.16em;color:var(--ink3);font-weight:500;text-transform:uppercase}
.head h2{font-size:29px;letter-spacing:-.8px;margin:12px 0 0;font-weight:600;line-height:1.35}
.head p{margin:14px 0 0;color:var(--ink2);font-size:14.5px}

/* ---------- cards ---------- */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:40px}
.card{
  border:1px solid var(--line);border-radius:14px;padding:24px 22px 26px;background:#fff;
  transition:border-color .2s,box-shadow .2s,transform .2s;
}
.card:hover{border-color:#dfe3e8;box-shadow:0 10px 28px rgba(22,24,29,.06);transform:translateY(-2px)}
.card .tag{
  width:24px;height:24px;border-radius:7px;display:grid;place-items:center;
  font-size:11px;font-weight:700;color:#fff;background:var(--grad);margin-bottom:16px;
}
.card h3{margin:0 0 8px;font-size:15px;font-weight:600;letter-spacing:-.1px}
.card p{margin:0;font-size:13.5px;color:var(--ink2);line-height:1.8}

/* ---------- scenes ---------- */
.scenes{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.scene{
  border:1px solid var(--line);border-radius:999px;padding:9px 18px;
  font-size:13.5px;color:var(--ink2);background:#fff;
}
.scene b{font-weight:500;color:var(--ink)}

/* ---------- about ---------- */
.about{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:start;margin-top:38px}
.about p{margin:0 0 16px;font-size:14.5px;color:var(--ink2);line-height:1.9}
.about p:last-child{margin-bottom:0}
.facts{border:1px solid var(--line);border-radius:14px;overflow:hidden}
.facts dl{margin:0}
.facts .row{display:flex;gap:18px;padding:14px 20px;font-size:13.5px}
.facts .row + .row{border-top:1px solid var(--line2)}
.facts dt{width:84px;flex:0 0 84px;color:var(--ink3);margin:0}
.facts dd{margin:0;color:var(--ink);line-height:1.7}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:36px}
.c-item{border:1px solid var(--line);border-radius:14px;padding:22px}
.c-item .lb{font-size:12px;color:var(--ink3);letter-spacing:.04em}
.c-item .vl{margin-top:8px;font-size:14.5px;color:var(--ink);font-weight:500;word-break:break-all}
.c-item .vl a{padding-bottom:1px;border-bottom:1px solid var(--line);transition:border-color .18s,color .18s}
.c-item .vl a:hover{color:var(--b);border-bottom-color:var(--b)}
.c-item .sub{margin-top:4px;font-size:12.5px;color:var(--ink3)}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);background:var(--soft);padding:52px 0 40px}
.f-top{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap}
.f-brand{font-size:13.5px;color:var(--ink2);line-height:1.9}
.f-brand strong{display:block;color:var(--ink);font-size:14.5px;font-weight:600;margin-bottom:6px}
.f-links{display:flex;gap:34px;flex-wrap:wrap;font-size:13px;color:var(--ink2)}
.f-links div{display:flex;flex-direction:column;gap:9px}
.f-links span{color:var(--ink3);font-size:12px;margin-bottom:2px}
.f-links a:hover{color:var(--ink)}
.f-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--ink3);line-height:2;
  display:flex;flex-wrap:wrap;gap:6px 18px;
}
.f-bottom a{border-bottom:1px solid transparent}
.f-bottom a:hover{border-bottom-color:#cfd4da}

/* ---------- legal doc ---------- */
.doc-hero{padding:64px 0 36px;border-bottom:1px solid var(--line2)}
.doc-hero h1{font-size:34px;margin:0;letter-spacing:-1px}
.doc-hero .meta{margin-top:14px;font-size:13px;color:var(--ink3)}
.doc{max-width:760px;padding:48px 0 88px}
.doc h2{font-size:17px;font-weight:600;letter-spacing:-.2px;margin:44px 0 12px}
.doc h2:first-child{margin-top:0}
.doc h3{font-size:14.5px;font-weight:600;margin:24px 0 8px;color:var(--ink)}
.doc p{margin:0 0 14px;font-size:14.5px;color:var(--ink2);line-height:1.95}
.doc ul{margin:0 0 14px;padding-left:20px;color:var(--ink2);font-size:14.5px;line-height:1.95}
.doc li{margin-bottom:7px}
.doc strong{color:var(--ink);font-weight:600}
.doc .note{
  margin:0 0 18px;padding:14px 18px;border:1px solid var(--line);border-left:3px solid var(--a);
  border-radius:0 10px 10px 0;background:var(--soft);font-size:13.5px;color:var(--ink2);line-height:1.85;
}
.doc a{color:var(--b)}
.doc a:hover{text-decoration:underline}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .about{grid-template-columns:1fr;gap:34px}
  .grid{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .step:nth-child(3){border-left:0}
  .step:nth-child(n+3){border-top:1px solid var(--line2)}
  .hero-in{grid-template-columns:1fr;padding:64px 0 60px;gap:0}
  .hero-visual{display:none}
  h1{font-size:36px;letter-spacing:-1px}
}
@media (max-width:640px){
  .nav-in{gap:16px}
  .nav nav a:not(.btn){display:none}
  .wrap{padding:0 20px}
  section{padding:56px 0}
  .hero{padding:56px 0 48px}
  h1{font-size:28px;letter-spacing:-.6px;line-height:1.3}
  .lede{font-size:15px}
  .grid,.contact-grid{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .step{padding:20px 22px}
  .step + .step{border-left:0;border-top:1px solid var(--line2)}
  .head h2{font-size:23px}
  .doc-hero h1{font-size:26px}
  .bottom-bar{word-break:break-all}
}