/* 科新科技 · AI 建站与搜索增长  |  shared stylesheet */
:root{
  --bg:#060912;
  --bg-soft:#0a1020;
  --panel:rgba(255,255,255,.035);
  --panel-2:rgba(255,255,255,.065);
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.16);
  --text:#eaf0ff;
  --muted:#98a6c4;
  --dim:#6d7c9f;
  --c1:#5eead4;
  --c2:#7c8cff;
  --c3:#bc93ff;
  --grad:linear-gradient(115deg,#5eead4 0%,#7c8cff 50%,#bc93ff 100%);
  --grad-soft:linear-gradient(115deg,rgba(94,234,212,.14),rgba(124,140,255,.14),rgba(188,147,255,.14));
  --r:18px;
  --max:1200px;
  --shadow:0 26px 80px rgba(0,0,0,.5);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(900px 600px at 78% -8%,rgba(124,140,255,.16),transparent 65%),
    radial-gradient(760px 540px at 4% 22%,rgba(94,234,212,.10),transparent 68%),
    radial-gradient(900px 700px at 60% 100%,rgba(188,147,255,.09),transparent 70%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 85%);
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 85%);
}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
button{font:inherit;cursor:pointer}
::selection{background:rgba(124,140,255,.38);color:#fff}
.wrap{width:min(var(--max),92vw);margin-inline:auto}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:60;
  border-bottom:1px solid transparent;
  transition:background .3s,border-color .3s,box-shadow .3s;
}
.nav.is-scrolled{
  background:rgba(6,9,18,.82);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom-color:var(--line);
  box-shadow:0 8px 30px rgba(0,0,0,.28);
}
.nav__in{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand__mark{
  width:36px;height:36px;border-radius:11px;background:var(--grad);
  display:grid;place-items:center;color:#061018;font-weight:800;font-size:19px;
  box-shadow:0 6px 24px rgba(124,140,255,.4);
}
.brand__txt{display:flex;flex-direction:column;line-height:1.18}
.brand__cn{font-size:17px;font-weight:700;letter-spacing:.06em}
.brand__en{font-size:9px;letter-spacing:.28em;color:var(--dim);text-transform:uppercase}
.nav__links{display:flex;align-items:center;gap:30px}
.nav__links a{font-size:14px;color:var(--muted);transition:color .25s;position:relative}
.nav__links a:hover,.nav__links a.is-active{color:var(--text)}
.nav__links a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-9px;height:2px;border-radius:2px;background:var(--grad);
}
.nav__cta{display:flex;align-items:center;gap:14px}
.nav__toggle{display:none;background:none;border:1px solid var(--line-2);color:var(--text);border-radius:10px;width:42px;height:38px;font-size:18px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 26px;border-radius:999px;font-size:14px;font-weight:600;
  border:1px solid transparent;transition:transform .25s,box-shadow .25s,border-color .25s,background .25s;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{background:var(--grad);color:#071018;box-shadow:0 10px 34px rgba(124,140,255,.28)}
.btn--primary:hover{box-shadow:0 14px 42px rgba(124,140,255,.45)}
.btn--ghost{border-color:var(--line-2);color:var(--text);background:rgba(255,255,255,.03)}
.btn--ghost:hover{border-color:rgba(124,140,255,.6);background:rgba(124,140,255,.08)}
.btn--sm{padding:10px 20px;font-size:13px}
.btn__arrow{font-size:17px;line-height:1}

/* ---------- section base ---------- */
.sec{padding:106px 0;position:relative}
.sec--tight{padding:76px 0}
.sec__head{max-width:720px;margin-bottom:56px}
.sec__head--center{margin-inline:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--c1);margin-bottom:18px;font-weight:600;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--c1)}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.24}
h2{font-size:clamp(30px,3.6vw,46px)}
h3{font-size:20px}
p{margin:0}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{color:var(--muted);font-size:17px;line-height:1.9;margin-top:20px}
.muted{color:var(--muted)}
.dim{color:var(--dim);font-size:13px}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line-2),transparent);border:0}

/* ---------- hero ---------- */
.hero{padding:96px 0 68px;position:relative}
.hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}
.hero__grid>*{min-width:0}
.hero__badge{
  display:inline-flex;align-items:center;gap:10px;padding:7px 15px;border-radius:999px;
  border:1px solid var(--line-2);background:rgba(255,255,255,.035);
  font-size:12.5px;color:var(--muted);margin-bottom:30px;
}
.hero__badge i{width:7px;height:7px;border-radius:50%;background:var(--c1);box-shadow:0 0 0 5px rgba(94,234,212,.14)}
.hero h1{font-size:clamp(40px,5.3vw,70px);line-height:1.13;letter-spacing:-.035em}
.hero h1 span{display:block}
.hero__sub{color:var(--muted);font-size:17px;line-height:1.95;margin:28px 0 36px;max-width:540px}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap}
.hero__note{margin-top:30px;display:flex;gap:22px;flex-wrap:wrap;color:var(--dim);font-size:13px}
.hero__note span{display:flex;align-items:center;gap:7px}
.hero__note b{color:var(--c1);font-weight:600}

/* hero visual */
.visual{position:relative;height:460px}
.visual__glow{
  position:absolute;inset:8% 6% 10% 8%;border-radius:50%;
  background:radial-gradient(circle at 40% 40%,rgba(94,234,212,.28),rgba(124,140,255,.22) 45%,transparent 72%);
  filter:blur(28px);animation:float 9s ease-in-out infinite;
}
.visual__ring{
  position:absolute;inset:14% 12%;border-radius:50%;border:1px solid rgba(255,255,255,.10);
  box-shadow:inset 0 0 60px rgba(124,140,255,.10);
}
.visual__ring::before{content:"";position:absolute;inset:14%;border-radius:50%;border:1px dashed rgba(255,255,255,.10)}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-18px)}}
.dash{
  position:absolute;left:4%;right:8%;top:16%;
  background:linear-gradient(160deg,rgba(20,28,50,.92),rgba(10,15,30,.92));
  border:1px solid var(--line-2);border-radius:20px;padding:24px;
  box-shadow:var(--shadow);backdrop-filter:blur(14px);
}
.dash__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.dash__dots{display:flex;gap:6px}
.dash__dots i{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.18)}
.dash__dots i:first-child{background:var(--c1)}
.dash__title{font-size:12px;color:var(--dim);letter-spacing:.12em}
.dash__row{margin-bottom:16px}
.dash__label{display:flex;justify-content:space-between;font-size:12.5px;color:var(--muted);margin-bottom:7px}
.dash__label b{color:var(--text);font-weight:600}
.dash__bar{height:7px;border-radius:99px;background:rgba(255,255,255,.07);overflow:hidden}
.dash__bar i{display:block;height:100%;border-radius:99px;background:var(--grad)}
.float{
  position:absolute;border:1px solid var(--line-2);border-radius:14px;
  background:rgba(14,20,38,.94);box-shadow:0 16px 40px rgba(0,0,0,.45);
  padding:14px 18px;backdrop-filter:blur(10px);
}
.float--a{right:-2%;top:-2%;animation:float 7s ease-in-out infinite}
.float--b{left:-6%;bottom:8%;animation:float 8.5s ease-in-out infinite reverse}
.float__k{font-size:11px;color:var(--dim);letter-spacing:.1em}
.float__v{font-size:21px;font-weight:700;margin-top:2px}
.float__v small{font-size:12px;color:var(--c1);font-weight:500;margin-left:5px}

/* ---------- stats ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  background:var(--line);
}
.stat{background:rgba(9,14,27,.9);padding:32px 28px}
.stat__v{font-size:clamp(24px,2.5vw,34px);font-weight:700;letter-spacing:-.02em}
.stat__v em{font-style:normal;font-size:15px;color:var(--muted);font-weight:500;margin-left:4px}
.stat__k{color:var(--dim);font-size:13px;margin-top:6px}

/* ---------- service cards ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.card{
  position:relative;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r);padding:30px;overflow:hidden;
  transition:transform .35s,border-color .35s,background .35s,box-shadow .35s;
}
.card::before{
  content:"";position:absolute;inset:0;opacity:0;transition:opacity .35s;pointer-events:none;
  background:radial-gradient(340px circle at var(--mx,50%) var(--my,50%),rgba(124,140,255,.14),transparent 70%);
}
.card:hover{transform:translateY(-6px);border-color:var(--line-2);background:var(--panel-2);box-shadow:var(--shadow)}
.card:hover::before{opacity:1}
.svc__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.svc__ico{
  width:50px;height:50px;border-radius:14px;display:grid;place-items:center;
  background:var(--grad-soft);border:1px solid var(--line-2);color:var(--c1);
}
.svc__ico svg{width:24px;height:24px}
.svc__num{font-size:12px;letter-spacing:.16em;color:var(--dim)}
.card h3{margin-bottom:12px}
.card p{color:var(--muted);font-size:14px;line-height:1.85}
.card__list{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:9px}
.card__list li{font-size:13px;color:var(--muted);display:flex;gap:9px;align-items:flex-start}
.card__list li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--c1);flex:none;margin-top:9px}
.card__link{display:inline-flex;align-items:center;gap:7px;margin-top:24px;font-size:13px;color:var(--c1);font-weight:600}
.card__link:hover{gap:12px}

/* ---------- process ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
.steps::before{content:"";position:absolute;left:8%;right:8%;top:34px;height:1px;background:var(--line-2)}
.step{position:relative;padding-top:0}
.step__dot{
  width:68px;height:68px;border-radius:50%;display:grid;place-items:center;
  background:#0a1120;border:1px solid var(--line-2);font-size:18px;font-weight:700;color:var(--c1);
  margin-bottom:24px;position:relative;z-index:1;
  box-shadow:0 0 0 8px var(--bg);
}
.step h3{font-size:18px;margin-bottom:10px}

/* ---------- matrix ---------- */
.mini{
  background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:24px;
  transition:transform .3s,border-color .3s;
}
.mini:hover{transform:translateY(-4px);border-color:var(--line-2)}
.mini__k{font-size:12px;letter-spacing:.14em;color:var(--c1);margin-bottom:12px}
.mini h3{font-size:17px;margin-bottom:9px}
.mini p{color:var(--muted);font-size:13.5px;line-height:1.8}

/* ---------- cases ---------- */
.scene{
  background:linear-gradient(160deg,rgba(255,255,255,.045),rgba(255,255,255,.015));
  border:1px solid var(--line);border-radius:var(--r);padding:32px;
  transition:transform .3s,border-color .3s;
}
.scene:hover{transform:translateY(-5px);border-color:var(--line-2)}
.scene__tag{display:inline-block;font-size:11.5px;letter-spacing:.1em;color:var(--c1);border:1px solid rgba(94,234,212,.3);border-radius:99px;padding:4px 12px;margin-bottom:20px}
.scene h3{font-size:19px;margin-bottom:12px}
.scene p{color:var(--muted);font-size:14px;line-height:1.85}
.scene__foot{margin-top:22px;padding-top:18px;border-top:1px solid var(--line);display:flex;gap:10px;flex-wrap:wrap}
.chip{font-size:12px;color:var(--dim);border:1px solid var(--line);border-radius:99px;padding:4px 12px}

/* ---------- faq ---------- */
.faq{display:grid;gap:12px;max-width:860px}
.faq details{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:0 22px}
.faq details[open]{border-color:var(--line-2);background:var(--panel-2)}
.faq summary{
  list-style:none;cursor:pointer;padding:20px 0;font-size:15.5px;font-weight:600;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;color:var(--c1);font-weight:400;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details p{padding:0 0 22px;color:var(--muted);font-size:14px;line-height:1.9}

/* ---------- cta ---------- */
.cta{
  position:relative;border:1px solid var(--line-2);border-radius:26px;padding:64px 56px;
  background:linear-gradient(140deg,rgba(94,234,212,.09),rgba(124,140,255,.09) 48%,rgba(188,147,255,.09));
  overflow:hidden;text-align:center;
}
.cta::before{
  content:"";position:absolute;inset:-40% 20% auto 20%;height:340px;
  background:radial-gradient(circle,rgba(124,140,255,.22),transparent 70%);filter:blur(40px);
}
.cta>*{position:relative}
.cta h2{margin-bottom:16px}
.cta p{color:var(--muted);max-width:620px;margin:0 auto 32px}

/* ---------- inner page hero ---------- */
.pagehead{padding:88px 0 64px;border-bottom:1px solid var(--line)}
.pagehead h1{font-size:clamp(34px,4.4vw,56px);margin-bottom:18px}
.pagehead p{color:var(--muted);font-size:17px;max-width:720px;line-height:1.9}
.crumb{display:flex;gap:10px;align-items:center;color:var(--dim);font-size:13px;margin-bottom:26px}
.crumb a:hover{color:var(--c1)}
.block{padding:80px 0;border-bottom:1px solid var(--line)}
.block:last-of-type{border-bottom:0}
.block h2{margin-bottom:22px}
.block p{color:var(--muted);line-height:1.95;margin-bottom:14px}
.feature-list{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:14px}
.feature-list li{display:flex;gap:14px;color:var(--muted);font-size:15px;line-height:1.8}
.feature-list li::before{content:"✓";color:var(--c1);font-weight:700;flex:none}
.split{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start}
.quote{
  border-left:2px solid var(--c1);padding:6px 0 6px 24px;color:var(--text);
  font-size:18px;line-height:1.85;margin-top:26px;
}
.info-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:32px}
.info-row{display:flex;justify-content:space-between;gap:20px;padding:15px 0;border-bottom:1px solid var(--line);font-size:14.5px}
.info-row:last-child{border-bottom:0}
.info-row span{color:var(--dim);flex:none}
.info-row b{font-weight:600;text-align:right;word-break:break-all}
.copy-btn{background:none;border:1px solid var(--line-2);color:var(--c1);border-radius:8px;padding:3px 10px;font-size:11.5px;margin-left:8px}
.copy-btn:hover{background:rgba(94,234,212,.1)}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--line);background:rgba(5,8,16,.72);margin-top:40px}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:48px;padding:70px 0 50px}
.footer__brand p{color:var(--dim);font-size:13.5px;line-height:1.9;margin-top:18px;max-width:300px}
.footer h4{font-size:13px;letter-spacing:.14em;color:var(--text);margin-bottom:20px}
.footer__links{display:grid;gap:11px}
.footer__links a{color:var(--dim);font-size:13.5px;transition:color .2s}
.footer__links a:hover{color:var(--c1)}
.footer__contact{display:grid;gap:11px;color:var(--dim);font-size:13.5px}
.footer__contact b{color:var(--text);font-weight:600}
.beian{
  margin-top:24px;padding:22px 26px;border:1px solid var(--line);border-radius:14px;
  background:rgba(255,255,255,.025);
}
.beian__title{font-size:12px;letter-spacing:.16em;color:var(--c1);margin-bottom:14px;font-weight:600}
.beian__row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 28px;font-size:14px;color:var(--muted);line-height:1.9}
.beian__row span{color:var(--dim)}
.beian__row b{color:var(--text);font-weight:600}
.beian__row a{color:var(--text);border-bottom:1px dashed var(--line-2)}
.beian__row a:hover{color:var(--c1)}
.footer__bottom{
  border-top:1px solid var(--line);padding:22px 0 30px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:var(--dim);font-size:12.5px;
}
.footer__bottom a:hover{color:var(--c1)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .75s ease,transform .75s ease}
.reveal.in{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:.08s}
.reveal[data-delay="2"]{transition-delay:.16s}
.reveal[data-delay="3"]{transition-delay:.24s}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero__grid{grid-template-columns:1fr;gap:44px}
  .visual{height:400px;max-width:560px;width:100%;margin-inline:auto}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer__grid{grid-template-columns:1fr 1fr;gap:38px}
  .split{grid-template-columns:1fr;gap:30px}
}
@media (max-width:780px){
  .nav__links{
    display:none;position:absolute;top:76px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(6,9,18,.97);border-bottom:1px solid var(--line);
    padding:12px 6vw 20px;backdrop-filter:blur(18px);
  }
  .nav__links.is-open{display:flex}
  .nav__links a{padding:13px 0;border-bottom:1px solid var(--line);font-size:15px}
  .nav__links a.is-active::after{display:none}
  .nav__toggle{display:block}
  .nav__cta .btn{display:none}
  .sec{padding:74px 0}
  .hero{padding:64px 0 66px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);row-gap:34px}
  .steps::before{display:none}
  .cta{padding:46px 24px}
  .footer__grid{padding:54px 0 36px;gap:32px}
}
@media (max-width:600px){
  html,body{max-width:100%}
  .wrap{width:92vw;max-width:100%}
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr}
  .beian__row{grid-template-columns:1fr;gap:6px}
  .beian{padding:20px}
  .hero h1{font-size:34px}
  .hero__sub{max-width:100%;font-size:15.5px}
  .hero__note{gap:10px 16px;font-size:12px}
  .visual{height:320px;max-width:100%;width:100%}
  .visual__glow{inset:4% 0 8% 0}
  .visual__ring{inset:16% 8%}
  .dash{left:0;right:0;top:10%;padding:18px}
  .dash__top{margin-bottom:16px}
  .dash__row{margin-bottom:12px}
  .float{padding:10px 13px}
  .float--a{right:0;top:-3%}
  .float--b{left:0;bottom:0}
  .float__v{font-size:16px}
  .nav__in{gap:12px}
  .nav__toggle{display:block!important}
  .pagehead{padding:60px 0 44px}
  .block{padding:58px 0}
  .cta h2{font-size:26px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}