/* 文智星官网 · 深色霓虹科技风 */

:root{
  --bg:#05060a; --bg2:#0a0d18; --line:rgba(0,240,255,.15);
  --cyan:#00f0ff; --violet:#a86bff; --magenta:#ff2fb3;
  --txt:#e8f4ff; --txt-dim:#8aa0b8;
  --glow-cyan:0 0 24px rgba(0,240,255,.45);
  --glow-violet:0 0 24px rgba(168,107,255,.45);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--txt);font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:var(--cyan);color:#000}

/* ---------- 背景特效层 ---------- */
.bg-grid{position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:48px 48px;opacity:.25;
  mask-image:radial-gradient(ellipse at 50% 30%,#000 30%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse at 50% 30%,#000 30%,transparent 75%)}
.bg-glow{position:fixed;border-radius:50%;filter:blur(120px);z-index:0;pointer-events:none;opacity:.35}
.g1{width:520px;height:520px;background:var(--cyan);top:-10%;left:-8%}
.g2{width:480px;height:480px;background:var(--violet);top:35%;right:-12%}
.g3{width:420px;height:420px;background:var(--magenta);bottom:-15%;left:20%;opacity:.22}
#stars{position:fixed;inset:0;z-index:0;pointer-events:none}

/* ---------- 顶部导航 ---------- */
nav{position:fixed;top:0;left:0;right:0;z-index:100;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  background:rgba(5,6,10,.55);border-bottom:1px solid var(--line)}
.nav-in{max-width:1280px;margin:0 auto;padding:0 32px;height:72px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:12px;font-weight:700;letter-spacing:2px;font-size:18px}
.logo img{height:36px;width:auto;filter:drop-shadow(0 0 8px rgba(0,240,255,.45))}
.menu{display:flex;gap:36px;font-size:14px}
.menu a{color:var(--txt-dim);transition:.25s;position:relative;padding:6px 2px}
.menu a:hover{color:var(--cyan)}
.menu a:nth-child(n+5){display:none}
.cta{padding:10px 22px;border-radius:999px;font-size:13px;letter-spacing:1px;
  border:1px solid var(--cyan);color:var(--cyan);background:rgba(0,240,255,.06);transition:.3s}
.cta:hover{background:var(--cyan);color:#000}
.shop-links{display:flex;gap:8px}
.shop-links .cta{padding:8px 16px;font-size:12px;letter-spacing:0}
.cta-wrap{position:relative;display:inline-block}
.cta-wrap .pop{
  position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%) translateY(-6px);
  width:200px;background:rgba(8,10,18,.98);border:1px solid var(--cyan);
  border-radius:12px;padding:16px 14px;text-align:center;
  opacity:0;visibility:hidden;transition:.25s ease;z-index:200;
  box-shadow:0 8px 28px rgba(0,0,0,.6),0 0 24px rgba(0,240,255,.15);
  pointer-events:none
}
.cta-wrap .pop::before{
  content:"";position:absolute;top:-6px;left:50%;transform:translateX(-50%) rotate(45deg);
  width:10px;height:10px;background:rgba(8,10,18,.98);border-left:1px solid var(--cyan);border-top:1px solid var(--cyan)
}
.cta-wrap .pop img{display:block;width:140px;height:140px;border-radius:8px;background:#fff;margin:0 auto 10px}
.cta-wrap .pop em{display:block;font-size:11px;color:var(--txt-dim);font-style:normal;margin-bottom:10px;letter-spacing:1px}
.cta-wrap .pop a.go{
  display:block;padding:8px 0;border-radius:999px;background:var(--cyan);color:#000;
  font-size:12px;font-weight:700;text-decoration:none;letter-spacing:1px;transition:.2s
}
.cta-wrap .pop a.go:hover{background:#fff}
.cta-wrap:hover .pop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);pointer-events:auto}
.cta-wrap:focus-within .pop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);pointer-events:auto}
.pi{width:18px;height:18px;border-radius:50%;margin-right:6px;vertical-align:middle;flex-shrink:0}
.shop-links .cta .pi{margin-right:5px}
.menu a:nth-child(n+5) .pi{margin-right:8px}

/* ---------- 通用容器 ---------- */
section{position:relative;z-index:1;padding:120px 32px;max-width:1280px;margin:0 auto}
.kicker{display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:3px;color:var(--cyan);text-transform:uppercase}
.kicker::before,.kicker::after{content:"";width:32px;height:1px;background:linear-gradient(90deg,transparent,var(--cyan))}
.kicker::after{background:linear-gradient(90deg,var(--cyan),transparent)}
h1,h2{font-weight:800;letter-spacing:1px;line-height:1.15}
.grad{background:linear-gradient(120deg,var(--cyan) 0%,var(--violet) 50%,var(--magenta) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.h2{font-size:clamp(30px,4vw,46px);margin:14px 0 18px}
.sub{color:var(--txt-dim);font-size:15px;line-height:1.9;max-width:640px}

/* ---------- Hero ---------- */
.hero{min-height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;padding-top:120px;position:relative;overflow:hidden}
.hero-left{position:relative;z-index:1;max-width:648px;padding:40px 44px;border-radius:24px;
  background:rgba(10,13,24,.55);border:1px solid rgba(0,240,255,.1);backdrop-filter:blur(12px);
  box-shadow:0 0 60px rgba(0,240,255,.06),inset 0 0 80px rgba(168,107,255,.04)}
.hero-left::before{content:"";position:absolute;inset:0;border-radius:24px;pointer-events:none;
  background:linear-gradient(120deg,rgba(0,240,255,.06),transparent 50%,rgba(168,107,255,.05))}
.hero-left>*{position:relative;z-index:1}
.hero h1{font-size:clamp(40px,7vw,86px);margin:18px 0 22px}
.hero .lead{font-size:16px;color:var(--txt-dim);line-height:2;max-width:560px}
.hero-btns{display:flex;gap:18px;margin-top:38px;flex-wrap:wrap}
.btn-primary{padding:14px 32px;border-radius:999px;font-size:14px;letter-spacing:2px;font-weight:600;
  background:linear-gradient(120deg,var(--cyan),var(--violet));color:#04121a;border:none;cursor:pointer;transition:.3s}
.btn-primary:hover{opacity:.9}
.btn-ghost{padding:14px 32px;border-radius:999px;font-size:14px;letter-spacing:2px;background:transparent;color:var(--txt);
  border:1px solid rgba(255,255,255,.18);cursor:pointer;transition:.3s}
.btn-ghost:hover{border-color:var(--violet);color:var(--violet)}
.hero-meta{display:flex;gap:10px;margin-top:40px;flex-wrap:nowrap}
.hero-meta div{display:flex;flex-direction:column;gap:4px;padding:12px 16px;border-radius:10px;min-width:0;flex:1 1 0;
  background:rgba(10,13,24,.7);border:1px solid rgba(0,240,255,.14);transition:.3s}
.hero-meta div:hover{border-color:rgba(0,240,255,.4);transform:translateY(-2px)}
.hero-meta b{font-size:24px;font-weight:700;background:linear-gradient(120deg,var(--cyan),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-meta span{font-size:11px;color:var(--txt-dim);letter-spacing:2px}

.hero-orb{position:absolute;right:4%;top:50%;transform:translateY(-50%);width:min(504px,50vw);aspect-ratio:1;border-radius:50%;overflow:hidden;z-index:0;
  background:radial-gradient(circle at 30% 30%,rgba(0,240,255,.12),rgba(168,107,255,.08) 50%,rgba(5,6,10,.85) 80%);
  display:flex;align-items:center;justify-content:center;animation:float 8s ease-in-out infinite}
.hero-orb::before{content:"";position:absolute;inset:0;border-radius:50%;border:1px solid rgba(0,240,255,.18)}
.hero-orb::after{content:"";position:absolute;inset:0;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(0,240,255,.06),transparent 60%)}
.hero-orb img{width:88%;height:auto;filter:drop-shadow(0 0 20px rgba(0,240,255,.5))}
@keyframes float{0%,100%{transform:translateY(-50%)}50%{transform:translateY(-54%)}}

/* ---------- 品牌故事 ---------- */
.story{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.story-frame{position:relative;padding:24px;border-radius:20px;background:rgba(10,13,24,.6);border:1px solid var(--line);overflow:hidden}
.story-frame::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(0,240,255,.08),transparent 40%,rgba(255,47,179,.08));pointer-events:none}
.story-visual{position:relative;z-index:1;padding:16px 0}
.story-frame img,.story-visual svg{border-radius:12px}
.story-points{display:grid;gap:18px;margin-top:28px}
.sp{display:flex;gap:14px;padding:16px 18px;border:1px solid var(--line);border-radius:12px;background:rgba(0,240,255,.03);transition:.3s}
.sp:hover{border-color:rgba(255,255,255,.2)}
.sp i{color:var(--cyan);font-style:normal;font-size:18px;line-height:1}
.sp b{display:block;font-size:14px;letter-spacing:1px;margin-bottom:4px}
.sp p{font-size:13px;color:var(--txt-dim);line-height:1.7}

/* ---------- 产品中心 ---------- */
.prod-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:48px;flex-wrap:wrap}
.filters{display:flex;gap:10px;flex-wrap:wrap}
.chip{padding:9px 18px;border-radius:999px;font-size:13px;letter-spacing:1px;border:1px solid rgba(255,255,255,.14);
  background:rgba(10,13,24,.5);color:var(--txt-dim);cursor:pointer;transition:.25s;
  font-family:inherit;appearance:none;-webkit-appearance:none}
.chip:hover{color:var(--cyan)}
.chip:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.chip.on{background:linear-gradient(120deg,var(--cyan),var(--violet));color:#04121a;border-color:transparent}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.card{position:relative;border-radius:16px;overflow:hidden;background:rgba(10,13,24,.7);border:1px solid var(--line);transition:.35s}
.card:hover{border-color:rgba(0,240,255,.6)}
.card .ph{aspect-ratio:1/1;overflow:hidden;position:relative;background:#0d1220;display:flex;align-items:center;justify-content:center}
.card .ph img{width:100%;height:100%;object-fit:contain;transition:.3s}
.card:hover .ph img{transform:scale(1.04)}
.ph-buy{color:inherit;text-decoration:none;cursor:pointer}
.ph-buy:focus-visible{outline:2px solid var(--cyan);outline-offset:-2px}
.ph-buy .qr-pop{position:absolute;inset:0;z-index:3;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  background:rgba(5,6,10,.96);opacity:0;visibility:hidden;transition:.28s}
.ph-buy .qr-pop img{width:58%;max-width:180px;height:auto;transform:none;border-radius:10px;background:#fff;padding:6px;box-shadow:0 0 24px rgba(0,240,255,.25)}
.ph-buy .qr-pop b{font-size:13px;letter-spacing:1px;color:var(--cyan);font-weight:600}
.ph-buy .buy-hint{position:absolute;right:10px;bottom:10px;z-index:2;display:none;font-size:11px;letter-spacing:1px;color:var(--cyan);
  padding:4px 10px;border-radius:999px;border:1px solid rgba(0,240,255,.45);background:rgba(5,6,10,.72)}
@media(hover:hover){.ph-buy:hover .qr-pop{opacity:1;visibility:visible}}
@media(hover:none){.ph-buy .qr-pop{display:none}.ph-buy .buy-hint{display:inline-block}}
.card .body{padding:20px 20px 22px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}
.tag{display:inline-block;font-size:11px;letter-spacing:2px;color:var(--cyan);border:1px solid rgba(0,240,255,.4);
  padding:4px 10px;border-radius:4px}
.tag.warranty{color:var(--violet);border-color:rgba(168,107,255,.45);margin-left:auto}
.card h3{font-size:18px;letter-spacing:1px;margin-bottom:8px}
.card p{font-size:13px;color:var(--txt-dim);line-height:1.8}

/* ---------- 关于我们 ---------- */
.about{display:grid;grid-template-columns:1.1fr 1fr;gap:56px;align-items:start}
.qr-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:32px}
.qr-card{display:flex;flex-direction:column;align-items:center;gap:10px;padding:16px;border-radius:14px;border:1px solid var(--line);background:rgba(10,13,24,.6);text-align:center;transition:.3s}
.qr-card:hover{border-color:var(--cyan);box-shadow:0 0 22px rgba(0,240,255,.18)}
.qr-card img{width:150px;max-width:100%;height:auto;aspect-ratio:1/1;object-fit:contain;border-radius:10px;background:#fff;padding:6px}
.qr-card span{font-size:12px;color:var(--txt-dim);letter-spacing:1px}
.qr-card b{color:var(--cyan);font-weight:600;margin-right:6px}
.about-right{position:sticky;top:120px}
.pill-list{display:grid;gap:12px;margin-top:24px}
.pill{padding:14px 18px;border-radius:12px;border:1px solid var(--line);background:rgba(10,13,24,.6);font-size:13px;color:var(--txt-dim);display:flex;gap:12px;align-items:center}
.pill b{color:var(--cyan);font-weight:600;min-width:80px;letter-spacing:1px}
.pill .mailto{color:#9fe8ff;text-decoration:none;transition:.25s;border-bottom:1px dashed rgba(0,240,255,.4)}
.pill .mailto:hover{color:#fff;text-shadow:0 0 10px rgba(0,240,255,.8);border-bottom-color:var(--cyan)}

/* ---------- 底部 ---------- */
footer{position:relative;z-index:1;margin-top:60px;padding:56px 32px 32px;border-top:1px solid var(--line);background:rgba(5,6,10,.8)}
.foot-in{max-width:1280px;margin:0 auto;display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap}
.foot-in h4{font-size:14px;letter-spacing:2px;margin-bottom:14px;color:var(--cyan)}
.foot-in p,.foot-in a{font-size:13px;color:var(--txt-dim);line-height:2;display:block}
.copy{max-width:1280px;margin:32px auto 0;padding-top:20px;border-top:1px solid var(--line);font-size:12px;color:var(--txt-dim);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.copy .icp{color:var(--txt-dim);transition:.25s}
.copy .icp:hover{color:var(--cyan)}

/* ---------- 响应式 ---------- */
.menu-toggle{display:none;background:transparent;border:1px solid var(--cyan);color:var(--cyan);
  width:42px;height:42px;border-radius:8px;font-size:18px;cursor:pointer;align-items:center;justify-content:center}
.menu-overlay{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:98;opacity:0;pointer-events:none;transition:opacity .25s}
.menu-overlay.show{opacity:1;pointer-events:auto}

@media (max-width:900px){
  section{padding:80px 20px}
  .story,.about{grid-template-columns:1fr;gap:36px}
  .hero{padding-top:100px;min-height:auto;padding-bottom:80px;display:flex;flex-direction:column;align-items:center}
  .hero-left{padding:28px 24px;border-radius:18px;max-width:none;width:100%;order:1}
  .hero h1{font-size:clamp(32px,9vw,44px);margin:14px 0 16px}
  .hero .lead{font-size:14px;max-width:none}
  .hero-orb{position:relative;right:auto;top:auto;transform:none;width:min(220px,60vw);margin:32px auto 0;order:2;animation:floatm 6s ease-in-out infinite;z-index:auto}
  .hero-orb img{width:82%}
  @keyframes floatm{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
  .hero-meta{gap:10px;margin-top:32px;display:grid;grid-template-columns:repeat(2,1fr)}
  .hero-meta div{padding:12px 14px;min-width:0}
  .hero-meta b{font-size:20px}
  .hero-meta span{font-size:11px;letter-spacing:1px}

  /* 移动端导航 */
  .menu{display:flex;position:fixed;top:72px;left:0;right:0;flex-direction:column;gap:0;z-index:99;
    background:rgba(5,6,10,.97);border-bottom:1px solid var(--line);
    padding:0;max-height:0;overflow:hidden;transition:max-height .3s ease}
  .menu.open{max-height:560px;padding:8px 0}
  .menu a{padding:16px 32px;font-size:15px;border-bottom:1px solid rgba(255,255,255,.05);display:block}
  .menu a:nth-child(n+5){display:block}
  .menu a:nth-child(n+5){
    padding:10px 22px;margin:8px 24px;border-radius:999px;
    border:1px solid var(--cyan);color:var(--cyan);background:rgba(0,240,255,.06);
    font-size:13px;letter-spacing:1px;text-align:center;
    border-bottom:none;transition:.3s
  }
  .menu a:nth-child(n+5):active{background:var(--cyan);color:#000}
  .menu a:last-child{border-bottom:none}
  .menu-toggle{display:flex}
  .shop-links{display:none}
  .cta-wrap .pop{display:none}

  /* 产品卡片 */
  .grid{grid-template-columns:1fr;gap:20px}
  .prod-head{flex-direction:column;align-items:flex-start}
  .filters{gap:8px}
  .chip{padding:8px 14px;font-size:12px}

  /* 关于我们 */
  .qr-grid{grid-template-columns:1fr;gap:14px}
  .qr-card img{width:150px;height:auto}

  /* 底部 */
  footer{padding:40px 20px 24px}
  .foot-in{flex-direction:column;gap:24px}
  .copy{flex-direction:column;align-items:center;gap:8px;text-align:center;font-size:11px}
}

@media (max-width:480px){
  .nav-in{padding:0 16px;height:64px}
  .logo img{height:30px}
  .logo{font-size:16px}
  .menu{top:64px}
  .hero-btns{flex-direction:column;width:100%;gap:12px}
  .btn-primary,.btn-ghost{width:100%;text-align:center;padding:14px 24px}
}