/* ===== PC28 智算中心 · 官网样式 ===== */
:root{
  --bg:#05070f;
  --bg2:#0a0f22;
  --panel:rgba(255,255,255,.04);
  --panel2:rgba(255,255,255,.07);
  --line:rgba(120,160,255,.18);
  --cyan:#22d3ee;
  --blue:#3b82f6;
  --violet:#8b5cf6;
  --gold:#f5c96b;
  --red:#fb7185;
  --txt:#e6ecff;
  --muted:#9aa6c9;
}
*{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","Segoe UI",sans-serif;
  overflow-x:hidden;
  line-height:1.65;
}
::selection{background:rgba(59,130,246,.4)}
a{color:inherit;text-decoration:none}

/* 背景粒子画布 */
#bg-canvas{position:fixed;inset:0;z-index:0;pointer-events:none}

/* 导航 */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 5vw;
  backdrop-filter:blur(14px);
  background:linear-gradient(180deg,rgba(5,7,15,.85),rgba(5,7,15,.45));
  border-bottom:1px solid var(--line);
  transition:padding .3s;
}
.nav.scrolled{padding:8px 5vw}
.logo{display:flex;align-items:center;gap:12px;font-weight:800;font-size:20px;letter-spacing:1px}
.logo svg{filter:drop-shadow(0 0 12px rgba(34,211,238,.55))}
.logo b{background:linear-gradient(90deg,var(--cyan),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.menu{display:flex;gap:26px;font-size:14px;color:var(--muted)}
.menu a{position:relative;padding:4px 0;transition:.25s}
.menu a:hover{color:#fff}
.menu a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:linear-gradient(90deg,var(--cyan),var(--violet));transition:.3s}
.menu a:hover::after{width:100%}
.nav-cta{
  padding:9px 22px;border-radius:999px;font-size:14px;font-weight:600;
  background:linear-gradient(135deg,var(--cyan),var(--blue) 55%,var(--violet));
  box-shadow:0 8px 24px rgba(59,130,246,.35);
  transition:.25s;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(59,130,246,.5)}

/* Hero */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding:120px 5vw 60px;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;width:100%;max-width:1280px;margin:0 auto}
.badge{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
  background:var(--panel2);border:1px solid var(--line);font-size:13px;color:var(--cyan);
}
.badge i{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);animation:pulse 1.6s infinite}
@keyframes pulse{50%{opacity:.4}}
.hero h1{font-size:clamp(34px,4.6vw,62px);line-height:1.22;margin:22px 0 18px;font-weight:900}
.hero h1 .grad{
  background:linear-gradient(100deg,var(--cyan) 10%,var(--blue) 45%,var(--violet) 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p{color:var(--muted);font-size:17px;max-width:560px}
.hero-actions{display:flex;gap:16px;margin-top:34px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:10px;padding:14px 34px;border-radius:12px;
  font-weight:700;font-size:15px;transition:.25s;cursor:pointer;border:none;
}
.btn-primary{
  background:linear-gradient(135deg,var(--cyan),var(--blue) 60%,var(--violet));
  box-shadow:0 10px 30px rgba(59,130,246,.4);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(59,130,246,.55)}
.btn-ghost{background:var(--panel2);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-3px)}
.dl-note{margin-top:16px;font-size:12px;color:var(--muted,#8892b0);letter-spacing:.3px}
.stats{display:flex;gap:38px;margin-top:52px;flex-wrap:wrap}
.stat{display:flex;flex-direction:column;gap:4px}
.stat b{font-size:30px;font-weight:900;background:linear-gradient(90deg,var(--cyan),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:13px;color:var(--muted)}

/* 3D 画布 */
#scene{width:100%;height:560px;border-radius:24px;overflow:hidden;position:relative;
  background:radial-gradient(circle at 50% 40%,rgba(59,130,246,.16),transparent 65%);
  border:1px solid var(--line);box-shadow:0 30px 80px rgba(0,0,0,.5)}
#scene .tag{position:absolute;left:20px;bottom:18px;font-size:12px;color:var(--muted);letter-spacing:2px}
#scene .core{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);text-align:center;pointer-events:none}
#scene .core b{font-size:76px;font-weight:900;background:linear-gradient(135deg,var(--cyan),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:0 0 60px rgba(59,130,246,.5)}
#scene .core span{display:block;font-size:15px;color:var(--muted);letter-spacing:6px;margin-top:-8px}

/* 通用 section */
section{position:relative;z-index:1;padding:90px 5vw}
.wrap{max-width:1280px;margin:0 auto}
.kicker{font-size:13px;letter-spacing:4px;color:var(--cyan);text-transform:uppercase}
h2.title{font-size:clamp(26px,3.4vw,42px);font-weight:900;margin:14px 0 12px}
.sub{color:var(--muted);font-size:16px;max-width:640px}
.center{text-align:center}
.center .sub{margin:0 auto}

/* 跑马灯 */
.marquee{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 0;background:rgba(255,255,255,.02)}
.marquee-track{display:flex;gap:60px;width:max-content;animation:slide 28s linear infinite}
.marquee-track span{font-size:15px;color:var(--muted);letter-spacing:2px;white-space:nowrap}
.marquee-track b{color:var(--cyan);margin-right:8px}
@keyframes slide{to{transform:translateX(-50%)}}

/* AI 引擎卡片 */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:46px}
.card{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);border-radius:18px;padding:30px 26px;
  transition:.35s;position:relative;overflow:hidden;
}
.card::before{content:"";position:absolute;inset:0;background:radial-gradient(600px at 20% 0%,rgba(59,130,246,.12),transparent 60%);opacity:0;transition:.35s}
.card:hover{transform:translateY(-6px);border-color:rgba(34,211,238,.5)}
.card:hover::before{opacity:1}
.card .ico{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px;background:linear-gradient(135deg,rgba(34,211,238,.15),rgba(139,92,246,.15));border:1px solid var(--line)}
.card h3{font-size:19px;margin-bottom:8px}
.card p{color:var(--muted);font-size:14px}
.num{position:absolute;top:16px;right:20px;font-size:44px;font-weight:900;color:rgba(255,255,255,.05)}

/* 产品矩阵 */
.products{background:linear-gradient(180deg,transparent,rgba(59,130,246,.05),transparent)}
.prod-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:46px}
.prod{
  position:relative;border-radius:22px;padding:36px 30px;min-height:270px;
  background:linear-gradient(150deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);overflow:hidden;transition:.4s;
  transform-style:preserve-3d;will-change:transform;
}
.prod:hover{border-color:rgba(34,211,238,.55);box-shadow:0 24px 60px rgba(0,0,0,.45)}
.prod .glow{position:absolute;width:260px;height:260px;border-radius:50%;filter:blur(70px);opacity:.35;transition:.4s}
.prod:nth-child(1) .glow{background:var(--cyan);top:-80px;right:-60px}
.prod:nth-child(2) .glow{background:var(--blue);top:-80px;right:-60px}
.prod:nth-child(3) .glow{background:var(--violet);top:-80px;right:-60px}
.prod:nth-child(4) .glow{background:var(--gold);top:-80px;right:-60px}
.prod .phead{display:flex;align-items:center;gap:16px;margin-bottom:16px}
.prod .pico{width:58px;height:58px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:22px;border:1px solid var(--line)}
.prod:nth-child(1) .pico{background:linear-gradient(135deg,#22d3ee33,#3b82f655);color:#7dd3fc}
.prod:nth-child(2) .pico{background:linear-gradient(135deg,#3b82f655,#8b5cf655);color:#a5b4fc}
.prod:nth-child(3) .pico{background:linear-gradient(135deg,#8b5cf655,#f5c96b44);color:#d8b4fe}
.prod:nth-child(4) .pico{background:linear-gradient(135deg,#f5c96b55,#fb718555);color:#fde68a}
.prod h3{font-size:23px}
.prod .ptag{font-size:11px;letter-spacing:2px;color:var(--muted);text-transform:uppercase}
.prod ul{list-style:none;margin-top:14px}
.prod li{position:relative;padding-left:22px;margin-bottom:9px;color:var(--muted);font-size:14px}
.prod li::before{content:"";position:absolute;left:0;top:8px;width:10px;height:10px;border-radius:3px;background:linear-gradient(135deg,var(--cyan),var(--violet));box-shadow:0 0 10px rgba(59,130,246,.6)}
.prod .meta{display:flex;gap:18px;margin-top:20px;flex-wrap:wrap}
.prod .meta span{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:4px 12px}

/* 数据看板 */
.dash{display:grid;grid-template-columns:1.1fr .9fr;gap:30px;margin-top:46px;align-items:center}
.dash .panel{
  background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:26px;
  box-shadow:0 20px 50px rgba(0,0,0,.4);
}
.dash .panel h3{font-size:17px;margin-bottom:6px}
.dash .panel .desc{font-size:13px;color:var(--muted);margin-bottom:16px}
#chart{width:100%;height:280px;display:block}
.dash-stats{display:flex;flex-direction:column;gap:16px}
.drow{display:flex;align-items:center;justify-content:space-between;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px 20px;transition:.3s}
.drow:hover{border-color:rgba(34,211,238,.4);transform:translateX(4px)}
.drow span{color:var(--muted);font-size:14px}
.drow b{font-size:20px}
.drow b.ok{color:var(--cyan)}
.drow b.gold{color:var(--gold)}
.drow b.violet{color:#c4b5fd}
.drow b.red{color:var(--red)}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:46px}
.step{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:26px 22px;transition:.3s}
.step:hover{border-color:rgba(34,211,238,.45);transform:translateY(-4px)}
.step .snum{font-size:40px;font-weight:900;background:linear-gradient(135deg,var(--cyan),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.step h3{font-size:17px;margin:8px 0 6px}
.step p{font-size:13px;color:var(--muted)}
.step::after{content:"→";position:absolute;right:-18px;top:42%;color:var(--cyan);font-size:20px;opacity:.5}
.step:last-child::after{display:none}

/* 特性 */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:46px}
.feat{display:flex;gap:16px;background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:22px;transition:.3s}
.feat:hover{border-color:rgba(34,211,238,.45)}
.feat .f-ico{flex:0 0 44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px;background:rgba(59,130,246,.12);border:1px solid var(--line)}
.feat h3{font-size:16px;margin-bottom:4px}
.feat p{font-size:13px;color:var(--muted)}

/* CTA */
.cta{
  margin:90px 5vw;border-radius:26px;padding:70px 40px;text-align:center;position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(34,211,238,.14),rgba(59,130,246,.16) 50%,rgba(139,92,246,.14));
  border:1px solid var(--line);
}
.cta::before{content:"";position:absolute;inset:-40%;background:conic-gradient(from 0deg,transparent,rgba(255,255,255,.06),transparent 30%);animation:spin 9s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.cta h2{font-size:clamp(24px,3vw,38px);font-weight:900;margin-bottom:12px;position:relative}
.cta p{color:var(--muted);margin-bottom:30px;position:relative}
.cta .btn{position:relative}

/* Footer */
footer{position:relative;z-index:1;border-top:1px solid var(--line);padding:50px 5vw 30px;background:rgba(255,255,255,.02)}
.foot-grid{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px}
.foot-grid h4{font-size:15px;margin-bottom:14px;color:#fff}
.foot-grid p,.foot-grid a{font-size:13px;color:var(--muted);display:block;margin-bottom:8px}
.foot-grid a:hover{color:var(--cyan)}
.copyright{max-width:1280px;margin:36px auto 0;padding-top:22px;border-top:1px solid rgba(255,255,255,.06);font-size:12px;color:#5c6680;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* 显示动画 */
.reveal{opacity:0;transform:translateY(34px);transition:.8s cubic-bezier(.2,.7,.3,1)}
.reveal.on{opacity:1;transform:none}

/* 响应式 */
@media(max-width:980px){
  .hero-grid,.dash{grid-template-columns:1fr}
  .grid3,.feature-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step::after{display:none}
  .prod-grid{grid-template-columns:1fr}
  .menu{display:none}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
  .grid3,.feature-grid,.steps,.foot-grid{grid-template-columns:1fr}
  #scene{height:380px}
}
/* ===== 实时数据看板 ===== */
.live-head{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:18px 0 16px}
.live-cell{background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.live-cell span{display:block;font-size:11px;color:var(--muted);margin-bottom:4px}
.live-cell b{font-size:20px;font-weight:900;letter-spacing:.5px}
.live-cell b.gold{color:var(--gold)}
.ok-text{color:#34d399}
.bad-text{color:var(--red)}
.route-box{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:16px 18px;border:1px solid rgba(139,92,246,.35);border-radius:14px;background:linear-gradient(135deg,rgba(139,92,246,.12),rgba(34,211,238,.08));margin-bottom:18px;flex-wrap:wrap}
.route-cap{display:block;font-size:11px;color:var(--muted);letter-spacing:2px}
.route-name{font-size:28px;font-weight:900;background:linear-gradient(90deg,var(--cyan),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:0 0 22px rgba(139,92,246,.35)}
.route-rate{text-align:right}
.route-rate b{font-size:32px;font-weight:900;color:var(--gold);text-shadow:0 0 20px rgba(245,201,107,.45)}
.route-rate span{display:block;font-size:11px;color:var(--muted)}
.route-rate small{font-size:11px;color:var(--muted)}
.recent-cap{font-size:13px;color:var(--txt);margin-bottom:12px;text-align:center}
.recent-dots{display:flex;justify-content:center;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.dot-result{width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:15px}
.dot-result.hit{color:#052e1c;background:radial-gradient(circle at 32% 28%,#86efac,#34d399);box-shadow:0 0 14px rgba(52,211,153,.4)}
.dot-result.miss{color:#4c0519;background:radial-gradient(circle at 32% 28%,#fda4af,#f43f5e);box-shadow:0 0 12px rgba(244,63,94,.3)}
.nums-cap{text-align:center;font-size:12px;color:var(--muted);padding-top:4px}
.btn.sm{padding:6px 18px;font-size:12px;margin-left:10px}
.blink{animation:cdblink 1s steps(2) infinite}
@keyframes cdblink{50%{opacity:.35}}

@media(max-width:980px){
  .live-head{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:600px){
  .route-box{flex-direction:column;align-items:flex-start}
  .route-rate{text-align:left}
  .dot-result{width:30px;height:30px;font-size:13px}
  .recent-dots{gap:7px}
}


/* ---------- 每日回测 ---------- */
#backtest{position:relative;padding:90px 0}
.bt-sum{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:34px 0 22px}
.bt-card{background:linear-gradient(160deg,var(--panel2),var(--panel));border:1px solid var(--line);
  border-radius:16px;padding:20px 18px;text-align:left;position:relative;overflow:hidden}
.bt-card::after{content:"";position:absolute;right:-30px;top:-30px;width:110px;height:110px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.14),transparent 70%)}
.bt-card span{display:block;font-size:13px;color:var(--muted);margin-bottom:10px}
.bt-card b{font-size:26px;font-weight:900;background:linear-gradient(90deg,var(--cyan),var(--violet));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.bt-card small{display:block;font-size:12px;color:var(--muted);margin-top:8px}
.bt-table{background:var(--panel);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.bt-head,.bt-row{display:grid;grid-template-columns:1.2fr 1.4fr 1.3fr .9fr 1fr;gap:10px;
  padding:14px 18px;font-size:14px;align-items:center}
.bt-head{background:rgba(139,92,246,.14);color:var(--muted);font-size:13px;border-bottom:1px solid var(--line)}
.bt-row{border-bottom:1px solid rgba(120,160,255,.08)}
.bt-row:last-child{border-bottom:none}
.bt-row:hover{background:var(--panel2)}
.bt-date{color:var(--txt);font-variant-numeric:tabular-nums}
.bt-pnl{font-weight:800;font-variant-numeric:tabular-nums}
.bt-pnl.up{color:#2dd4a0}
.bt-pnl.down{color:var(--red)}
.bt-dd{color:var(--gold);font-variant-numeric:tabular-nums}
.bt-wr{color:var(--cyan);font-variant-numeric:tabular-nums}
.bt-bets{color:var(--muted);font-variant-numeric:tabular-nums}
.bt-note{color:var(--muted);font-size:13px;margin-top:16px;line-height:1.7}
@media(max-width:760px){
  .bt-sum{grid-template-columns:repeat(2,1fr)}
  .bt-head,.bt-row{grid-template-columns:1.1fr 1.2fr 1fr;padding:12px 10px;font-size:12px}
  .bt-head span:nth-child(4),.bt-head span:nth-child(5),
  .bt-row .bt-wr,.bt-row .bt-bets{display:none}
}
.dl-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:46px}
.dl-card{position:relative;background:linear-gradient(160deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:18px;padding:34px 30px;text-align:left;transition:.3s;overflow:hidden}
.dl-card::before{content:"";position:absolute;left:0;top:0;width:4px;height:100%;background:linear-gradient(180deg,var(--cyan),var(--violet));opacity:.9}
.dl-card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.45);box-shadow:0 18px 44px rgba(0,0,0,.35)}
.dl-badge{display:inline-block;font-size:11px;letter-spacing:2px;color:var(--cyan);border:1px solid rgba(34,211,238,.4);border-radius:999px;padding:4px 12px;margin-bottom:16px}
.dl-card h3{font-size:22px;font-weight:900;margin-bottom:10px}
.dl-card p{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:18px}
.dl-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.dl-meta span{font-size:12px;color:var(--muted);background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:5px 10px;font-variant-numeric:tabular-nums}
@media(max-width:760px){.dl-grid{grid-template-columns:1fr}}