:root{
  --ink:#263a61;
  --ink-2:#425379;
  --muted:#71809d;
  --soft:#9aa8c0;
  --line:rgba(78,101,151,.16);
  --line-strong:rgba(83,104,157,.28);
  --paper:#f7f8fc;
  --glass:rgba(255,255,255,.64);
  --glass-strong:rgba(255,255,255,.78);
  --blue:#6f9ee8;
  --blue-2:#a7c7f2;
  --violet:#a79be8;
  --pink:#dfb9dc;
  --shadow:0 24px 65px rgba(82,99,144,.13);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;min-height:100vh;background:
  radial-gradient(circle at 15% 8%,rgba(255,255,255,.98),transparent 35%),
  radial-gradient(circle at 86% 16%,rgba(213,226,250,.72),transparent 34%),
  linear-gradient(145deg,#f7f8fc 0%,#eef3fa 48%,#f8f6fb 100%);
  color:var(--ink);font-family:"Noto Sans SC","Microsoft YaHei","PingFang SC",Arial,sans-serif;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
#network-canvas{position:fixed;inset:0;width:100%;height:100%;z-index:-4;opacity:.55;pointer-events:none}
.aurora{position:fixed;border-radius:50%;filter:blur(80px);pointer-events:none;z-index:-3;opacity:.5}
.aurora-a{width:38vw;height:38vw;right:-10vw;top:3vh;background:radial-gradient(circle,rgba(127,174,237,.42),rgba(182,160,232,.19) 48%,transparent 72%)}
.aurora-b{width:34vw;height:34vw;left:-14vw;bottom:-10vh;background:radial-gradient(circle,rgba(218,190,229,.36),rgba(174,205,241,.17) 55%,transparent 75%)}
.topbar{height:76px;padding:0 clamp(22px,5vw,78px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(255,255,255,.72);background:rgba(248,250,254,.66);backdrop-filter:blur(22px) saturate(1.15);position:sticky;top:0;z-index:20;box-shadow:0 1px 0 rgba(94,116,161,.08)}
.brand{display:flex;align-items:center;gap:13px;min-width:0}.brand-mark{width:42px;height:42px;border:1px solid rgba(103,130,190,.22);background:rgba(255,255,255,.58);border-radius:14px;display:grid;place-items:center;box-shadow:0 12px 30px rgba(77,97,148,.09)}
.brand-mark svg{width:26px;height:26px;fill:none;stroke:#718fd2;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.brand-copy{display:flex;flex-direction:column;min-width:0}.brand-copy strong{font:600 17px/1.15 Georgia,"Times New Roman",STSong,serif;letter-spacing:.025em}.brand-copy small{font:600 8.5px/1.2 Arial,sans-serif;color:#8c9ab7;letter-spacing:.19em;margin-top:5px;white-space:nowrap}.nav{display:flex;gap:34px;align-items:center}.nav a{font-size:13px;color:#6f7c98;position:relative;padding:29px 0 24px;transition:.2s}.nav a:after{content:"";position:absolute;left:50%;bottom:17px;width:0;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--blue),var(--violet));transform:translateX(-50%);transition:.22s}.nav a:hover,.nav a.active{color:var(--ink)}.nav a:hover:after,.nav a.active:after{width:24px}
main{max-width:1540px;margin:0 auto;padding:0 clamp(22px,5vw,78px)}
.hero{min-height:720px;padding:84px 0 70px;display:grid;grid-template-columns:minmax(0,1.18fr) minmax(360px,.72fr);align-items:center;gap:clamp(44px,8vw,130px);position:relative}
.hero:before{content:"";position:absolute;left:-8vw;bottom:9%;width:54vw;height:170px;background:linear-gradient(105deg,rgba(204,214,242,.17),rgba(255,255,255,.76),rgba(208,222,247,.12));filter:blur(2px);clip-path:polygon(0 42%,22% 58%,48% 25%,76% 63%,100% 38%,100% 100%,0 100%);opacity:.82;z-index:-1}
.eyebrow{margin:0 0 18px;font:700 10px/1 Arial,sans-serif;letter-spacing:.31em;color:#8b91c8}.hero h1{font:400 clamp(54px,6vw,92px)/1.06 STSong,SimSun,"Times New Roman",serif;letter-spacing:.02em;margin:0;color:#2c416e;text-shadow:0 9px 28px rgba(255,255,255,.72)}.hero h1 span{color:#536b9e}.hero-en{margin:22px 0 0;font:500 clamp(14px,1.4vw,19px)/1.4 Georgia,"Times New Roman",serif;letter-spacing:.32em;color:#a095d2;text-transform:uppercase}.hero-lead{max-width:760px;margin:34px 0 0;font-size:16px;line-height:2;color:#667795;letter-spacing:.035em}.hero-actions{display:flex;gap:28px;align-items:center;margin-top:36px}.primary-btn{display:inline-flex;align-items:center;gap:18px;padding:14px 20px;border:1px solid rgba(110,140,203,.24);border-radius:999px;background:rgba(255,255,255,.62);box-shadow:0 14px 40px rgba(83,105,158,.1);font-size:13px;color:#415989;backdrop-filter:blur(14px);transition:.24s}.primary-btn span{font-size:16px}.primary-btn:hover{transform:translateY(-2px);background:#fff;box-shadow:0 18px 46px rgba(83,105,158,.16)}.text-btn{font-size:13px;color:#7c88a5}.text-btn span{margin-left:9px}.text-btn:hover{color:#556a99}
.hero-panel{min-height:460px;border:1px solid rgba(255,255,255,.68);border-radius:36px;background:linear-gradient(145deg,rgba(255,255,255,.57),rgba(235,241,252,.35));box-shadow:var(--shadow);backdrop-filter:blur(26px) saturate(1.2);position:relative;overflow:hidden;padding:42px;display:flex;align-items:end}.hero-panel:after{content:"";position:absolute;inset:0;background:linear-gradient(150deg,rgba(255,255,255,.48),transparent 35%,rgba(125,170,234,.08));pointer-events:none}.panel-content{position:relative;z-index:2}.panel-kicker{margin:0 0 9px;font:700 9px/1 Arial,sans-serif;letter-spacing:.26em;color:#8d9bbb}.panel-content>strong{display:block;font:400 74px/1 Georgia,serif;color:#3c558b}.panel-content>span{display:block;margin-top:7px;color:#687896;font-size:13px}.panel-line{width:54px;height:2px;margin:24px 0;background:linear-gradient(90deg,var(--blue),var(--violet),transparent)}.panel-content ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:23px}.panel-content li{display:flex;flex-direction:column;gap:7px}.panel-content li b{font:600 18px/1 Georgia,serif;color:#3e5687}.panel-content li span{font-size:10px;color:#8a96ae;white-space:nowrap}.orbital{position:absolute;width:340px;height:340px;right:-45px;top:-35px;opacity:.72}.orbit{position:absolute;inset:50%;border:1px solid rgba(118,148,213,.24);border-radius:50%;transform:translate(-50%,-50%)}.orbit-1{width:108px;height:108px}.orbit-2{width:205px;height:205px}.orbit-3{width:310px;height:310px}.core{position:absolute;left:50%;top:50%;width:18px;height:18px;border-radius:50%;transform:translate(-50%,-50%);background:radial-gradient(circle at 35% 35%,#fff,#88ace8 48%,#a69ce1);box-shadow:0 0 34px rgba(111,158,232,.75)}.satellite{position:absolute;width:10px;height:10px;border-radius:50%;background:#fff;border:2px solid #9d9bdf;box-shadow:0 0 18px rgba(148,151,222,.55)}.s1{left:44px;top:122px}.s2{right:66px;top:67px}.s3{right:28px;bottom:68px}
.database-section{padding:78px 0 96px}.section-intro{display:flex;justify-content:space-between;align-items:end;gap:60px;margin-bottom:32px}.section-intro h2,.about-card h2{font:400 clamp(34px,4vw,52px)/1.15 STSong,SimSun,serif;margin:0;color:#2d426f}.section-intro>p{max-width:620px;margin:0;color:#74819b;font-size:14px;line-height:1.9}.database-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.database-card{min-height:310px;padding:30px;border:1px solid rgba(111,136,190,.16);border-radius:28px;background:linear-gradient(145deg,rgba(255,255,255,.72),rgba(244,247,253,.48));backdrop-filter:blur(22px) saturate(1.18);box-shadow:0 18px 54px rgba(80,99,145,.08);position:relative;display:grid;grid-template-columns:72px 1fr;grid-template-rows:1fr auto;gap:0 24px;overflow:hidden;transition:.28s}.database-card:before{content:"";position:absolute;inset:auto -15% -65% auto;width:270px;height:270px;border-radius:50%;background:radial-gradient(circle,rgba(150,184,235,.17),transparent 70%);transition:.3s}.database-card:hover{transform:translateY(-5px);border-color:rgba(105,133,196,.3);box-shadow:0 27px 72px rgba(74,94,143,.14)}.database-card:hover:before{transform:scale(1.2)}.card-featured{grid-column:span 2;min-height:340px;grid-template-columns:90px minmax(0,1fr);background:linear-gradient(135deg,rgba(255,255,255,.84),rgba(235,241,252,.56));}.card-featured .card-copy{max-width:1000px}.card-featured h3{font-size:37px}.card-index{position:absolute;right:26px;top:21px;font:500 12px/1 Georgia,serif;color:#a8b2c9}.card-icon{width:68px;height:68px;border-radius:22px;border:1px solid rgba(108,136,198,.17);background:rgba(255,255,255,.64);display:grid;place-items:center;box-shadow:0 13px 32px rgba(83,104,154,.09)}.card-featured .card-icon{width:82px;height:82px;border-radius:26px}.card-icon svg{width:34px;height:34px;fill:none;stroke:#859fd9;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.card-copy{padding-right:28px}.card-type{font:700 9px/1 Arial,sans-serif;letter-spacing:.23em;color:#9992c7}.database-card h3{font:400 27px/1.35 STSong,SimSun,serif;margin:14px 0 12px;color:#2d426f}.database-card p{margin:0;color:#74809a;font-size:13px;line-height:1.85;max-width:760px}.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}.chips span{font-size:10px;color:#7182a5;border:1px solid rgba(111,136,190,.15);background:rgba(255,255,255,.5);border-radius:999px;padding:6px 9px}.enter{grid-column:2;align-self:end;justify-self:start;margin-top:24px;font-size:12px;color:#556da1}.enter b{font-size:15px;margin-left:8px;font-weight:400}.database-card:hover .enter{color:#745fc1}.about-section{padding:30px 0 86px}.about-card{display:grid;grid-template-columns:minmax(260px,.55fr) minmax(0,1.45fr);gap:70px;align-items:center;padding:34px 38px;border-top:1px solid rgba(86,112,169,.16);border-bottom:1px solid rgba(86,112,169,.16)}.about-card p:last-child{margin:0;color:#6e7c99;line-height:1.95;font-size:14px}.meta-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:24px}.meta-row div{padding:22px 24px;border:1px solid rgba(107,133,190,.13);border-radius:18px;background:rgba(255,255,255,.4);display:flex;flex-direction:column;gap:8px}.meta-row span{font-size:11px;color:#98a4ba}.meta-row b{font:500 13px/1.3 Georgia,"Times New Roman",serif;color:#55688f}.footer{height:78px;padding:0 clamp(22px,5vw,78px);display:flex;justify-content:space-between;align-items:center;border-top:1px solid rgba(91,116,167,.12);color:#8a97af;font-size:11px;letter-spacing:.04em;background:rgba(248,250,253,.42)}.footer span:first-child{font-family:Georgia,"Times New Roman",serif;color:#55688f}
@media(max-width:1050px){.hero{grid-template-columns:1fr;min-height:auto;padding-top:70px}.hero-panel{min-height:380px}.database-card,.card-featured{grid-column:auto}.database-grid{grid-template-columns:1fr}.section-intro,.about-card{grid-template-columns:1fr;display:grid;gap:20px}.hero h1{font-size:64px}}
@media(max-width:720px){.topbar{height:68px;padding:0 18px}.brand-copy small{display:none}.brand-copy strong{font-size:15px}.nav{gap:18px}.nav a{padding:25px 0 22px;font-size:12px}main{padding:0 18px}.hero{padding:58px 0 54px;gap:34px}.hero h1{font-size:48px}.hero-en{font-size:11px;letter-spacing:.22em}.hero-lead{font-size:14px}.hero-actions{flex-wrap:wrap}.hero-panel{min-height:330px;padding:28px;border-radius:27px}.panel-content ul{gap:12px}.panel-content li span{white-space:normal}.database-section{padding:55px 0 70px}.section-intro{display:block}.section-intro>p{margin-top:16px}.database-card,.card-featured{display:block;min-height:auto;padding:25px;border-radius:23px}.card-icon,.card-featured .card-icon{width:64px;height:64px;border-radius:20px}.card-copy{padding:0}.database-card h3,.card-featured h3{font-size:26px}.enter{display:block;margin-top:24px}.about-card{padding:28px 0}.meta-row{grid-template-columns:1fr}.footer{height:auto;padding:22px 18px;display:block}.footer span{display:block}.footer span+span{margin-top:7px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}.aurora{display:none}}