/* ============ 基础与变量 ============ */
:root{
  --bg:#05060f;
  --bg-2:#090b1a;
  --teal:#5eead4;
  --indigo:#818cf8;
  --violet:#c084fc;
  --pink:#e879f9;
  --text:#eaf0ff;
  --muted:#98a2c0;
  --card:rgba(255,255,255,.04);
  --card-brd:rgba(255,255,255,.10);
  --grad:linear-gradient(120deg,#5eead4 0%,#818cf8 45%,#e879f9 100%);
  --radius:20px;
  --maxw:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  overflow-x:hidden;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.grad-text{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}

/* ============ 极光背景 ============ */
.aurora-bg{position:fixed;inset:0;z-index:-3;overflow:hidden;background:
  radial-gradient(1200px 800px at 80% -10%,rgba(129,140,248,.18),transparent 60%),
  radial-gradient(1000px 700px at 10% 10%,rgba(94,234,212,.14),transparent 55%),
  var(--bg);}
.aurora{position:absolute;border-radius:50%;filter:blur(90px);opacity:.55;mix-blend-mode:screen;will-change:transform}
.aurora-1{width:60vw;height:60vw;top:-15vw;left:-10vw;background:radial-gradient(circle,#3ee6c4,transparent 65%);animation:drift1 22s ease-in-out infinite}
.aurora-2{width:55vw;height:55vw;top:10vh;right:-15vw;background:radial-gradient(circle,#8b7bff,transparent 65%);animation:drift2 26s ease-in-out infinite}
.aurora-3{width:50vw;height:50vw;bottom:-20vw;left:25vw;background:radial-gradient(circle,#e879f9,transparent 65%);animation:drift3 30s ease-in-out infinite}
@keyframes drift1{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(8vw,6vh) scale(1.15)}}
@keyframes drift2{0%,100%{transform:translate(0,0) scale(1.05)}50%{transform:translate(-7vw,10vh) scale(.9)}}
@keyframes drift3{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(5vw,-8vh) scale(1.2)}}
.grid-overlay{position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse at 50% 0%,black,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,black,transparent 75%);}
#particles{position:fixed;inset:0;z-index:-2;pointer-events:none}

/* ============ 滚动进度 ============ */
.scroll-progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:100;background:var(--grad);box-shadow:0 0 12px rgba(129,140,248,.8)}

/* ============ 导航 ============ */
.nav{position:fixed;top:0;left:0;right:0;z-index:90;transition:.35s;padding:18px 0}
.nav.scrolled{padding:10px 0;background:rgba(6,8,20,.72);backdrop-filter:blur(18px);border-bottom:1px solid var(--card-brd)}
.nav-inner{display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{display:grid;place-items:center;filter:drop-shadow(0 0 10px rgba(129,140,248,.5))}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text b{font-size:19px;letter-spacing:1px}
.brand-text i{font-style:normal;font-family:"Orbitron",sans-serif;font-size:10px;letter-spacing:3px;color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{font-size:15px;color:var(--muted);position:relative;transition:.25s;white-space:nowrap}
.nav-links a:not(.nav-cta)::after{content:"";position:absolute;left:0;bottom:-6px;height:2px;width:0;background:var(--grad);transition:.3s}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{width:100%}
.nav-cta{padding:9px 20px;border-radius:999px;background:var(--grad);color:#05060f !important;font-weight:700;box-shadow:0 8px 24px rgba(129,140,248,.35)}
.nav-cta:hover{transform:translateY(-2px);transition:.25s}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:26px;height:2px;background:var(--text);border-radius:2px;transition:.3s}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 30px;border-radius:999px;font-size:16px;font-weight:600;cursor:pointer;border:0;transition:.3s;position:relative}
.btn-primary{background:var(--grad);color:#05060f;box-shadow:0 10px 30px rgba(129,140,248,.4)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(129,140,248,.55)}
.btn-ghost{background:rgba(255,255,255,.05);color:var(--text);border:1px solid var(--card-brd)}
.btn-ghost:hover{background:rgba(255,255,255,.1);transform:translateY(-3px)}
.btn .arrow{transition:.3s}
.btn:hover .arrow{transform:translateX(5px)}
.btn-block{width:100%;justify-content:center;margin-top:8px}

/* ============ 首屏 ============ */
.hero{min-height:100vh;display:flex;align-items:center;position:relative;padding:120px 0 60px}
.hero-inner{text-align:center;max-width:900px}
.hero-badge{display:inline-flex;align-items:center;gap:9px;padding:8px 18px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid var(--card-brd);font-size:14px;color:var(--muted);margin-bottom:28px}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--teal);box-shadow:0 0 10px var(--teal);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.7)}}
.hero-title{font-size:clamp(38px,6.5vw,76px);font-weight:800;line-height:1.12;letter-spacing:-1px;margin-bottom:24px}
.hero-title .grad-text{background-size:200% auto;animation:shine 5s linear infinite}
@keyframes shine{to{background-position:200% center}}
.hero-sub{font-size:clamp(15px,2vw,18px);color:var(--muted);max-width:680px;margin:0 auto 38px}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:64px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:760px;margin:0 auto}
.hstat b{display:block;font-family:"Orbitron",sans-serif;font-size:clamp(26px,4vw,40px);background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hstat span{font-size:13px;color:var(--muted)}
.hero-scroll{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);font-size:12px;color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:8px;letter-spacing:2px}
.hero-scroll span{width:22px;height:36px;border:2px solid var(--card-brd);border-radius:12px;position:relative}
.hero-scroll span::after{content:"";position:absolute;top:6px;left:50%;transform:translateX(-50%);width:4px;height:8px;border-radius:2px;background:var(--teal);animation:scrolldot 1.6s infinite}
@keyframes scrolldot{0%{opacity:0;top:6px}40%{opacity:1}80%{opacity:0;top:18px}}

/* ============ 通用区块 ============ */
.section{padding:110px 0;position:relative}
.section-head{text-align:center;max-width:760px;margin:0 auto 64px}
.eyebrow{display:inline-block;font-family:"Orbitron",sans-serif;font-size:12px;letter-spacing:4px;color:var(--teal);margin-bottom:16px}
.section-title{font-size:clamp(28px,4.2vw,46px);font-weight:800;letter-spacing:-.5px;margin-bottom:18px;line-height:1.2}
.section-desc{color:var(--muted);font-size:16px}

/* ============ 关于卡片 ============ */
.about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.glass-card{background:var(--card);border:1px solid var(--card-brd);border-radius:var(--radius);padding:38px 30px;backdrop-filter:blur(12px);transition:.4s;position:relative;overflow:hidden}
.glass-card::before{content:"";position:absolute;inset:0;background:var(--grad);opacity:0;transition:.4s;z-index:-1}
.glass-card:hover{transform:translateY(-8px);border-color:transparent;box-shadow:0 24px 60px rgba(0,0,0,.5)}
.glass-card:hover::before{opacity:.08}
.card-ico{width:60px;height:60px;border-radius:16px;display:grid;place-items:center;font-size:26px;margin-bottom:22px;color:#05060f}
.ico-1{background:linear-gradient(135deg,#5eead4,#22d3ee)}
.ico-2{background:linear-gradient(135deg,#818cf8,#6366f1)}
.ico-3{background:linear-gradient(135deg,#e879f9,#c084fc)}
.glass-card h3{font-size:21px;margin-bottom:12px}
.glass-card p{color:var(--muted);font-size:15px}

/* ============ 业务卡片 ============ */
.biz-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.biz-card{position:relative;background:var(--card);border:1px solid var(--card-brd);border-radius:var(--radius);padding:36px 30px;overflow:hidden;transition:transform .2s ease-out,box-shadow .3s;transform-style:preserve-3d}
.biz-glow{position:absolute;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(129,140,248,.35),transparent 60%);filter:blur(20px);top:var(--my,0);left:var(--mx,0);transform:translate(-50%,-50%);opacity:0;transition:opacity .3s;pointer-events:none}
.biz-card:hover{box-shadow:0 24px 60px rgba(0,0,0,.55);border-color:rgba(129,140,248,.4)}
.biz-card:hover .biz-glow{opacity:1}
.biz-num{font-family:"Orbitron",sans-serif;font-size:15px;color:var(--teal);letter-spacing:2px;margin-bottom:14px}
.biz-icon{font-size:38px;margin-bottom:16px}
.biz-card h3{font-size:22px;margin-bottom:12px}
.biz-card p{color:var(--muted);font-size:15px;margin-bottom:18px}
.biz-card ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.biz-card li{font-size:14px;color:var(--text);padding-left:22px;position:relative}
.biz-card li::before{content:"▹";position:absolute;left:0;color:var(--teal)}

/* ============ 数据条 ============ */
.stats-section{padding:60px 0}
.stats-band{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;background:linear-gradient(120deg,rgba(94,234,212,.08),rgba(232,121,249,.08));border:1px solid var(--card-brd);border-radius:28px;padding:46px 30px;backdrop-filter:blur(10px)}
.sb-item{text-align:center}
.sb-item b{display:block;font-family:"Orbitron",sans-serif;font-size:clamp(30px,5vw,52px);background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.sb-item small{color:var(--muted);font-size:14px;letter-spacing:1px}

/* ============ 流量矩阵 ============ */
.media-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.media-chip{aspect-ratio:1.4/1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;background:var(--card);border:1px solid var(--card-brd);border-radius:16px;transition:.35s;cursor:default}
.media-chip .mc-logo{width:42px;height:42px;border-radius:11px;display:grid;place-items:center;font-weight:800;font-size:17px;color:#05060f}
.media-chip span{font-size:13px;color:var(--muted)}
.media-chip:hover{transform:translateY(-6px) scale(1.03);border-color:rgba(129,140,248,.45);background:rgba(129,140,248,.08)}
.media-chip:hover span{color:var(--text)}

/* ============ CTA / 联系 ============ */
.cta-box{display:grid;grid-template-columns:1.1fr 1fr;gap:50px;background:linear-gradient(135deg,rgba(129,140,248,.12),rgba(94,234,212,.06));border:1px solid var(--card-brd);border-radius:28px;padding:56px;backdrop-filter:blur(12px)}
.cta-left .section-title{text-align:left;font-size:clamp(26px,3.5vw,38px)}
.cta-left .eyebrow{margin-bottom:12px}
.cta-left .section-desc{margin-bottom:28px}
.contact-lines{display:flex;flex-direction:column;gap:14px}
.cl{display:flex;align-items:center;gap:12px;color:var(--text);font-size:15px}
.cl-ico{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;background:rgba(255,255,255,.06);border:1px solid var(--card-brd);color:var(--teal)}
.cta-form{display:flex;flex-direction:column;gap:18px}
.fld{position:relative}
.fld input,.fld textarea{width:100%;background:rgba(255,255,255,.04);border:1px solid var(--card-brd);border-radius:12px;padding:16px 16px 16px;color:var(--text);font-size:15px;font-family:inherit;transition:.25s;resize:none}
.fld textarea{padding-top:20px}
.fld label{position:absolute;left:16px;top:16px;color:var(--muted);font-size:15px;pointer-events:none;transition:.2s;background:transparent}
.fld input:focus,.fld textarea:focus{outline:none;border-color:var(--indigo);background:rgba(129,140,248,.06)}
.fld input:focus+label,.fld input:not(:placeholder-shown)+label,
.fld textarea:focus+label,.fld textarea:not(:placeholder-shown)+label{top:-9px;left:12px;font-size:12px;padding:0 6px;background:#0b0d1c;color:var(--teal)}
.form-tip{font-size:13px;color:var(--teal);min-height:18px;text-align:center}

/* ============ 页脚 ============ */
.footer{border-top:1px solid var(--card-brd);background:rgba(5,6,15,.6);backdrop-filter:blur(10px);margin-top:40px}
.footer-inner{display:grid;grid-template-columns:1.4fr 2fr;gap:40px;padding:60px 24px 40px}
.footer-brand p{color:var(--muted);font-size:14px;margin-top:18px}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.fcol h4{font-size:15px;margin-bottom:16px}
.fcol a{display:block;color:var(--muted);font-size:14px;padding:5px 0;transition:.2s}
.fcol a:hover{color:var(--teal);transform:translateX(3px)}
.footer-bottom{border-top:1px solid var(--card-brd);padding:20px 0}
.fb-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
.fb-inner span,.fb-inner a{font-size:13px;color:var(--muted)}
.fb-inner a:hover{color:var(--teal)}

/* ============ 滚动进场 ============ */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media(max-width:960px){
  .about-grid,.biz-grid{grid-template-columns:repeat(2,1fr)}
  .media-grid{grid-template-columns:repeat(4,1fr)}
  .cta-box{grid-template-columns:1fr;padding:40px 28px}
  .footer-inner{grid-template-columns:1fr}
}
@media(max-width:680px){
  .nav-links{position:fixed;top:0;right:-100%;height:100vh;width:78%;max-width:320px;flex-direction:column;justify-content:center;gap:26px;background:rgba(8,10,22,.96);backdrop-filter:blur(20px);transition:.4s;padding:40px}
  .nav-links.open{right:0}
  .nav-toggle{display:flex}
  .nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle.active span:nth-child(2){opacity:0}
  .nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:26px}
  .about-grid,.biz-grid{grid-template-columns:1fr}
  .stats-band{grid-template-columns:repeat(2,1fr);gap:30px}
  .media-grid{grid-template-columns:repeat(3,1fr)}
  .section{padding:80px 0}
  .footer-cols{grid-template-columns:repeat(3,1fr)}
}
@media(prefers-reduced-motion:reduce){
  .aurora,.hero-title .grad-text,.hero-badge .dot{animation:none}
  .reveal{transition:none;opacity:1;transform:none}
}