/* ===== 数智魔方 · 科技风样式 ===== */
:root{
  --bg:#05070f;
  --bg-2:#0a0f1e;
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.09);
  --ink:#f3f6ff;
  --ink-2:#aab4d4;
  --ink-3:#727e9e;
  --cyan:#22d3ee;
  --blue:#5b8bff;
  --violet:#8b5cf6;
  --glow:0 0 40px rgba(34,211,238,.35);
  --radius:16px;
  --radius-lg:26px;
  --maxw:1160px;
  --mono:'SFMono-Regular',ui-monospace,'JetBrains Mono','Menlo',monospace;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
}
/* 背景层：网格 + 光球 */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;
  background:
    radial-gradient(620px 420px at 78% -8%, rgba(139,92,246,.22), transparent 60%),
    radial-gradient(560px 460px at 8% 8%, rgba(34,211,238,.18), transparent 60%),
    radial-gradient(700px 600px at 50% 120%, rgba(91,139,255,.16), transparent 60%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;
  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:54px 54px;
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 40%,transparent 100%);
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 40%,transparent 100%);
}
a{color:inherit;text-decoration:none;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.eyebrow{
  font-family:var(--mono);font-size:12.5px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--cyan);display:inline-block;margin-bottom:14px;
}

/* ===== 导航 ===== */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);background:rgba(5,7,15,.6);border-bottom:1px solid var(--line);}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:19px;letter-spacing:.02em;}
.brand .logo{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(135deg,var(--cyan),var(--violet));box-shadow:var(--glow);}
.brand .logo svg{width:19px;height:19px;color:#05070f;}
.brand .cube{background:linear-gradient(135deg,var(--cyan),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent;}
.nav-links{display:flex;gap:30px;font-size:14.5px;color:var(--ink-2);}
.nav-links a{transition:color .2s;position:relative;}
.nav-links a:hover{color:var(--ink);}
.nav-cta{display:flex;gap:12px;align-items:center;}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:14.5px;font-weight:600;padding:11px 22px;border-radius:12px;border:1px solid transparent;cursor:pointer;transition:transform .15s,box-shadow .25s,background .2s;}
.btn-primary{background:linear-gradient(135deg,var(--cyan),var(--blue));color:#04121a;box-shadow:0 8px 30px rgba(34,211,238,.32);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 40px rgba(34,211,238,.5);}
.btn-ghost{border-color:var(--line);color:var(--ink);background:var(--surface);}
.btn-ghost:hover{background:var(--surface-2);border-color:rgba(34,211,238,.4);}
.btn-line{border:1px solid var(--line);color:var(--ink-2);background:transparent;}
.btn-line:hover{color:var(--ink);border-color:rgba(34,211,238,.45);}

/* ===== Hero ===== */
.hero{padding:96px 0 70px;position:relative;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero h1{font-size:62px;line-height:1.05;font-weight:800;letter-spacing:-.02em;}
.hero h1 .accent{background:linear-gradient(120deg,var(--cyan),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero p.lead{color:var(--ink-2);font-size:18px;margin-top:22px;max-width:480px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag{font-family:var(--mono);font-size:12px;color:var(--cyan);border:1px solid rgba(34,211,238,.28);background:rgba(34,211,238,.07);padding:6px 12px;border-radius:999px;}
.hero-actions{display:flex;gap:14px;margin-top:34px;}
.hero-stats{display:flex;gap:30px;margin-top:40px;}
.hero-stats .n{font-size:26px;font-weight:700;}
.hero-stats .l{font-size:13px;color:var(--ink-3);}

/* Hero mockup：生图画布 */
.canvas{position:relative;border-radius:var(--radius-lg);background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));border:1px solid var(--line);padding:18px;backdrop-filter:blur(8px);box-shadow:0 30px 80px rgba(0,0,0,.5);overflow:hidden;}
.canvas::before{content:"";position:absolute;inset:0;background:radial-gradient(300px 200px at 80% 0%,rgba(139,92,246,.25),transparent 60%);pointer-events:none;}
.canvas-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;font-family:var(--mono);font-size:11px;color:var(--ink-3);}
.dot{width:9px;height:9px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);}
.canvas-prompt{display:flex;align-items:center;gap:10px;background:rgba(0,0,0,.35);border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin-bottom:14px;font-size:13.5px;color:var(--ink-2);}
.canvas-prompt .go{margin-left:auto;background:linear-gradient(135deg,var(--cyan),var(--blue));color:#04121a;font-weight:600;font-size:12px;padding:6px 12px;border-radius:9px;}
.canvas-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;}
.shot{aspect-ratio:1;border-radius:11px;border:1px solid var(--line);position:relative;overflow:hidden;}
.shot span{position:absolute;left:8px;bottom:7px;font-family:var(--mono);font-size:9px;color:rgba(255,255,255,.7);background:rgba(0,0,0,.4);padding:2px 6px;border-radius:6px;}
.g1{background:linear-gradient(135deg,#22d3ee,#5b8bff);}
.g2{background:linear-gradient(135deg,#8b5cf6,#22d3ee);}
.g3{background:linear-gradient(135deg,#f472b6,#8b5cf6);}
.g4{background:linear-gradient(135deg,#34d399,#22d3ee);}
.g5{background:linear-gradient(135deg,#fbbf24,#f472b6);}
.g6{background:linear-gradient(135deg,#5b8bff,#8b5cf6);}
.shot{animation:floaty 6s ease-in-out infinite;}
.shot:nth-child(2){animation-delay:.6s;}
.shot:nth-child(3){animation-delay:1.2s;}
.shot:nth-child(4){animation-delay:.3s;}
.shot:nth-child(5){animation-delay:.9s;}
.shot:nth-child(6){animation-delay:1.5s;}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}

/* ===== Section 通用 ===== */
.section{padding:88px 0;position:relative;}
.section-head{max-width:640px;margin:0 auto 52px;text-align:center;}
.section-head.center{text-align:center;}
.section-head h2{font-size:38px;font-weight:750;letter-spacing:-.01em;}
.section-head p{color:var(--ink-2);font-size:16px;margin-top:14px;}

/* ===== 能力 ===== */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.cap{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:transform .2s,border-color .2s,background .2s;}
.cap:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.4);background:var(--surface-2);}
.cap .ic{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(34,211,238,.18),rgba(139,92,246,.18));border:1px solid rgba(34,211,238,.25);margin-bottom:18px;}
.cap .ic svg{width:23px;height:23px;color:var(--cyan);}
.cap h3{font-size:18px;font-weight:650;margin-bottom:8px;}
.cap p{color:var(--ink-2);font-size:14.5px;}

/* ===== 工作流 ===== */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step;}
.flow .step{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;position:relative;}
.flow .step .num{font-family:var(--mono);font-size:13px;color:var(--cyan);border:1px solid rgba(34,211,238,.3);border-radius:8px;padding:3px 9px;display:inline-block;margin-bottom:14px;}
.flow .step h3{font-size:16px;font-weight:600;margin-bottom:6px;}
.flow .step p{font-size:13.5px;color:var(--ink-3);}

/* ===== 画廊 ===== */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.tile{position:relative;aspect-ratio:3/4;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:transform .25s,box-shadow .25s;}
.tile:hover{transform:translateY(-5px) scale(1.02);box-shadow:0 20px 50px rgba(0,0,0,.5);}
.tile .meta{position:absolute;left:12px;bottom:12px;right:12px;}
.tile .meta .t{font-size:14px;font-weight:600;}
.tile .meta .s{font-family:var(--mono);font-size:11px;color:rgba(255,255,255,.75);margin-top:3px;}
.tile::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(0,0,0,.6));}
.tile.wide{grid-column:span 2;aspect-ratio:16/10;}
.t1{background:linear-gradient(135deg,#22d3ee,#3b82f6);}
.t2{background:linear-gradient(135deg,#8b5cf6,#ec4899);}
.t3{background:linear-gradient(135deg,#10b981,#22d3ee);}
.t4{background:linear-gradient(135deg,#f59e0b,#ef4444);}
.t5{background:linear-gradient(135deg,#6366f1,#22d3ee);}
.t6{background:linear-gradient(135deg,#ec4899,#8b5cf6);}
.t7{background:linear-gradient(135deg,#14b8a6,#3b82f6);}
.t8{background:linear-gradient(135deg,#f43f5e,#8b5cf6);}

/* ===== 指标 ===== */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.metric{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:30px 24px;text-align:center;}
.metric .n{font-size:40px;font-weight:800;background:linear-gradient(120deg,var(--cyan),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent;}
.metric .l{color:var(--ink-2);font-size:14px;margin-top:6px;}

/* ===== CTA ===== */
.cta-band{position:relative;border-radius:var(--radius-lg);border:1px solid rgba(34,211,238,.3);background:linear-gradient(135deg,rgba(34,211,238,.1),rgba(139,92,246,.1));padding:60px 40px;text-align:center;overflow:hidden;}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(400px 200px at 50% 0%,rgba(34,211,238,.25),transparent 60%);}
.cta-band h2{font-size:34px;font-weight:750;position:relative;}
.cta-band p{color:var(--ink-2);margin-top:12px;position:relative;}
.cta-band .hero-actions{justify-content:center;position:relative;}

/* ===== 页脚 ===== */
.footer{border-top:1px solid var(--line);padding:54px 0 36px;margin-top:30px;}
.footer-inner{max-width:var(--maxw);margin:0 auto;padding:0 24px;display:grid;grid-template-columns:1.4fr 2fr;gap:40px;}
.footer p{color:var(--ink-3);font-size:14px;margin-top:14px;max-width:280px;}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:14px;color:var(--ink);}
.footer-col a{display:block;color:var(--ink-3);font-size:13.5px;margin-bottom:9px;transition:color .2s;}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{max-width:var(--maxw);margin:34px auto 0;padding:20px 24px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:var(--ink-3);font-size:13px;}

/* ===== 二级页：风格库 ===== */
.subhero{padding:84px 0 40px;text-align:center;}
.subhero h1{font-size:46px;font-weight:800;letter-spacing:-.01em;}
.subhero h1 .accent{background:linear-gradient(120deg,var(--cyan),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent;}
.subhero p{color:var(--ink-2);font-size:17px;margin-top:16px;max-width:560px;margin-left:auto;margin-right:auto;}
.back-link{display:inline-flex;align-items:center;gap:7px;color:var(--ink-2);font-size:14px;margin-bottom:18px;transition:color .2s;}
.back-link:hover{color:var(--cyan);}
.back-link svg{width:16px;height:16px;}
.filters{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:30px 0 44px;}
.filters .f{font-family:var(--mono);font-size:12.5px;color:var(--ink-2);border:1px solid var(--line);background:var(--surface);padding:8px 16px;border-radius:999px;cursor:pointer;transition:all .2s;}
.filters .f.active,.filters .f:hover{color:#04121a;background:linear-gradient(135deg,var(--cyan),var(--blue));border-color:transparent;}
.lib-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .25s,border-color .2s;}
.card:hover{transform:translateY(-5px);border-color:rgba(34,211,238,.4);}
.card .img{aspect-ratio:4/3;position:relative;}
.card .body{padding:18px 20px 22px;}
.card .body .t{font-size:16px;font-weight:650;}
.card .body .d{color:var(--ink-3);font-size:13.5px;margin-top:6px;}
.card .body .meta{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap;}
.card .body .meta span{font-family:var(--mono);font-size:11px;color:var(--cyan);border:1px solid rgba(34,211,238,.25);padding:4px 9px;border-radius:7px;}

/* ===== 响应式 ===== */
@media(max-width:900px){
  .hero-grid,.footer-inner{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:42px;}
  .cap-grid,.flow,.metrics,.gallery,.lib-grid{grid-template-columns:1fr 1fr;}
  .gallery{grid-template-columns:1fr 1fr;}
  .tile.wide{grid-column:span 2;}
  .nav-links{display:none;}
  .section-head h2,.subhero h1{font-size:30px;}
}
@media(max-width:600px){
  .cap-grid,.flow,.metrics,.gallery,.lib-grid{grid-template-columns:1fr;}
  .hero-stats{flex-wrap:wrap;gap:18px;}
}