/* ============================================================
   新慧团人工智能科技 · 全站设计系统
   深空画布 + 电光紫/荧光绿 + 玻璃拟态 + 网状背景
   ============================================================ */
:root{
  /* 品牌色 —— 从原站紫色 VI 传承 + 电光青点缀（更科技） */
  --brand:#B737B7;
  --brand-2:#7c3aed;
  --brand-3:#36F9A7;      /* TRAE 同款荧光绿点缀 */
  --accent:#22d3ee;        /* 辅助电光青 */
  --bg:#05060a;
  --bg-2:#0a0c14;
  --bg-3:#10131d;
  --surface:#0e121f;
  --surface-2:#151a2b;
  --line:rgba(200,180,230,.12);
  --line-strong:rgba(200,180,230,.22);
  --text:#f0ecf7;
  --muted:#9aa0b4;
  --muted-2:#6b7090;
  --radius:20px;
  --radius-sm:12px;
  --font-display:"Sora","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","SF Mono",Consolas,monospace;
  --nav-h:72px;
  --ease:cubic-bezier(.16,1,.3,1);
  --ease-out:cubic-bezier(.22,1,.36,1);
  --maxw:1280px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;overflow-x:hidden}
body{
  font-family:var(--font-display);
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img{max-width:100%;display:block}
::selection{background:var(--brand);color:#fff}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,4vw,48px)}

/* ---------- 背景装饰 ---------- */
.noise{
  position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.04;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.aurora{
  position:absolute;inset:0;pointer-events:none;z-index:0;overflow:hidden;
}
.aurora::before,.aurora::after{
  content:"";position:absolute;border-radius:50%;filter:blur(120px);opacity:.5;
}
.aurora::before{
  width:600px;height:600px;left:-100px;top:-200px;
  background:radial-gradient(circle,rgba(183,55,183,.45),transparent 70%);
  animation:float1 18s ease-in-out infinite;
}
.aurora::after{
  width:500px;height:500px;right:-80px;top:100px;
  background:radial-gradient(circle,rgba(34,211,238,.35),transparent 70%);
  animation:float2 22s ease-in-out infinite;
}
@keyframes float1{
  0%,100%{transform:translate(0,0)}
  50%{transform:translate(60px,80px)}
}
@keyframes float2{
  0%,100%{transform:translate(0,0)}
  50%{transform:translate(-80px,40px)}
}
.grid-bg{
  position:absolute;inset:0;pointer-events:none;z-index:0;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 0%,transparent 70%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 0%,transparent 70%);
}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  height:var(--nav-h);display:flex;align-items:center;
  transition:background .4s var(--ease),border-color .4s var(--ease),backdrop-filter .4s var(--ease);
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:rgba(5,6,10,.75);
  backdrop-filter:blur(20px) saturate(180%);
  -webkit-backdrop-filter:blur(20px) saturate(180%);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;width:100%}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{height:34px;width:auto;display:block;filter:brightness(1.05)}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{font-size:14.5px;color:var(--muted);position:relative;transition:color .25s var(--ease);font-weight:500}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:-8px;width:0;height:2px;
  background:var(--brand);transition:width .3s var(--ease),left .3s var(--ease);
  border-radius:2px;
}
.nav-links a:hover::after{width:100%;left:0}
.nav-links a.active::after{width:100%;left:0}
.btn{
  display:inline-flex;align-items:center;gap:8px;cursor:pointer;
  font-family:var(--font-display);font-weight:600;font-size:14px;
  border-radius:999px;border:1px solid transparent;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease),border-color .3s var(--ease),color .3s;
}
.btn:active{transform:scale(.98)}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;padding:11px 24px;
  box-shadow:0 10px 30px -10px rgba(183,55,183,.5),inset 0 1px 0 rgba(255,255,255,.2);
}
.btn-primary:hover{box-shadow:0 16px 40px -10px rgba(183,55,183,.6),inset 0 1px 0 rgba(255,255,255,.25);transform:translateY(-1px)}
.btn-ghost{
  background:transparent;color:var(--text);padding:11px 22px;
  border-color:var(--line-strong);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(183,55,183,.08)}
.btn-green{
  background:var(--brand-3);color:#0a0c14;padding:11px 24px;font-weight:700;
  box-shadow:0 10px 30px -10px rgba(54,249,167,.4);
}
.btn-green:hover{background:#4bffbd;box-shadow:0 18px 40px -12px rgba(54,249,167,.55);transform:translateY(-1px)}
.btn-lg{padding:15px 30px;font-size:15px}
.nav-burger{display:none;background:transparent;border:none;color:var(--text);cursor:pointer;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);place-items:center}
.nav-mobile{
  display:flex;flex-direction:column;position:fixed;top:var(--nav-h);left:0;right:0;z-index:49;
  background:rgba(5,6,10,.97);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);
  padding:12px clamp(20px,4vw,48px) 32px;gap:4px;border-bottom:1px solid var(--line);
  transform:translateY(-12px);opacity:0;pointer-events:none;transition:.3s var(--ease);
}
.nav-mobile.open{transform:none;opacity:1;pointer-events:auto}
.nav-mobile a{padding:14px 2px;font-size:17px;border-bottom:1px solid var(--line);color:var(--text)}
.nav-mobile a.active{color:var(--brand-3)}
.nav-mobile .btn{margin-top:18px;justify-content:center;border-bottom:none}

/* ---------- Hero（首页） ---------- */
.hero{
  position:relative;min-height:100dvh;display:flex;align-items:center;
  padding-top:var(--nav-h);overflow:hidden;
}
.hero-canvas{position:absolute;inset:0;z-index:0;opacity:.7}
.hero-inner{position:relative;z-index:2;width:100%;display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,6vw,80px);align-items:center}
.hero-copy{max-width:680px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--brand-3);margin-bottom:28px;font-weight:500;
}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--brand-3);box-shadow:0 0 14px var(--brand-3);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{
  font-size:clamp(42px,7vw,88px);font-weight:800;line-height:1;letter-spacing:-.03em;
}
.hero h1 .hl{
  background:linear-gradient(120deg,var(--brand) 0%,var(--brand-3) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:26px;font-size:clamp(16px,1.8vw,20px);color:var(--muted);max-width:54ch;line-height:1.8}
.hero-cta{display:flex;gap:14px;margin-top:40px;flex-wrap:wrap}
.hero-metrics{
  display:flex;gap:clamp(24px,5vw,56px);margin-top:48px;padding-top:30px;
  border-top:1px solid var(--line);
}
.metric .num{font-family:var(--font-mono);font-size:30px;font-weight:600;color:var(--text);letter-spacing:-.02em}
.metric .num em{font-style:normal;color:var(--brand-3)}
.metric .lbl{font-size:13px;color:var(--muted-2);margin-top:4px}

/* Hero 右侧 —— Chainlink 风格文字轮播器 */
.hero-viz{position:relative;min-width:0;height:500px;display:flex;flex-direction:column;justify-content:center;gap:48px}
.word-rotator{position:relative;display:flex;align-items:center;min-width:0}
.word-fixed{
  font-size:clamp(80px,11vw,140px);font-weight:900;line-height:.9;letter-spacing:-.04em;
  background:linear-gradient(180deg,#fff 0%,rgba(255,255,255,.4) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;white-space:nowrap;flex:none;
}
.word-stack-wrap{
  flex:1;min-width:0;position:relative;height:clamp(80px,11vw,140px);overflow:hidden;margin-left:18px;
}
.word-stack{position:absolute;inset:0}
.word-item{
  position:absolute;inset:0;display:flex;align-items:center;
  font-size:clamp(30px,4vw,52px);font-weight:800;line-height:1.1;letter-spacing:-.02em;
  color:var(--muted);transition:transform .8s var(--ease),opacity .6s var(--ease),color .6s;
  white-space:nowrap;padding-right:.08em;
}
.word-item.active{
  color:var(--brand-3);
  text-shadow:0 0 60px rgba(54,249,167,.4);
}
.viz-meta{
  position:absolute;right:0;bottom:24px;font-family:var(--font-mono);font-size:11px;color:var(--muted-2);
  letter-spacing:.14em;text-transform:uppercase;
}
.viz-meta .live{display:inline-flex;align-items:center;gap:8px}
.viz-meta .live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-3);box-shadow:0 0 8px var(--brand-3);animation:pulse 2s infinite}
.viz-tag{
  position:absolute;left:0;top:20px;padding:6px 14px;border-radius:999px;
  background:rgba(183,55,183,.15);color:var(--brand);font-family:var(--font-mono);font-size:11px;
  letter-spacing:.14em;text-transform:uppercase;border:1px solid rgba(183,55,183,.3);
}

/* 词轮播说明卡片 —— 一屏一卡，左右渐隐，无缝滚动 */
.hero-cards{
  position:relative;overflow:hidden;margin:0 calc(clamp(20px,4vw,48px) * -1);
  mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);
}
.hero-cards-track{display:flex;width:max-content;animation:scrollL 42s linear infinite}
.hero-cards:hover .hero-cards-track{animation-play-state:paused}
.hero-card{
  width:min(440px,72vw);flex:none;margin-right:28px;padding:24px 28px;
  border-radius:18px;border:1px solid var(--line);
  background:linear-gradient(160deg,var(--surface),var(--bg-2));
  transition:border-color .3s,transform .3s;
}
.hero-card:hover{border-color:var(--brand);transform:translateY(-3px)}
.hero-card .hc-tag{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--brand-3);
}
.hero-card h3{font-size:19px;font-weight:700;margin:10px 0 8px;letter-spacing:-.01em}
.hero-card h3 em{font-style:normal;color:var(--brand-3)}
.hero-card p{font-size:14px;color:var(--muted);line-height:1.7}

/* ---------- 子页 Hero ---------- */
.hero-page{
  position:relative;overflow:hidden;
  padding:calc(var(--nav-h) + clamp(56px,9vw,110px)) 0 clamp(64px,9vw,110px);
}
.hero-page .hero-inner{grid-template-columns:1fr;display:block}
.crumbs{
  display:flex;align-items:center;gap:10px;font-family:var(--font-mono);
  font-size:12px;letter-spacing:.08em;color:var(--muted-2);margin-bottom:30px;
}
.crumbs a{color:var(--muted);transition:color .25s}
.crumbs a:hover{color:var(--brand-3)}
.crumbs .sep{opacity:.5}
.crumbs [aria-current]{color:var(--text)}
.hero-page h1{
  font-size:clamp(36px,5.4vw,64px);font-weight:800;line-height:1.08;letter-spacing:-.025em;
}
.hero-page h1 .hl{
  background:linear-gradient(120deg,var(--brand) 0%,var(--brand-3) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-page .hero-sub{margin-top:22px}
.hero-page .hero-cta{margin-top:34px}

/* ---------- Marquee （仿 Chainlink 双色跑马灯） ---------- */
.marquee-section{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:20px 0;overflow:hidden;position:relative;background:var(--bg-2);
}
.marquee-track{display:flex;gap:0;width:max-content;animation:marquee 45s linear infinite;align-items:center}
.marquee-section:hover .marquee-track{animation-play-state:paused}
.marquee-track .m-item{
  display:flex;align-items:center;gap:44px;padding:0 44px;
  font-family:var(--font-display);font-size:18px;font-weight:600;letter-spacing:.02em;
  color:var(--muted);white-space:nowrap;transition:color .3s;
}
.marquee-track .m-item i{font-style:normal;color:var(--brand);font-size:10px}
.marquee-track .m-item:hover{color:var(--text)}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ---------- 通用 section ---------- */
.section{position:relative;padding:clamp(90px,12vw,170px) 0}
.section-tight{padding:clamp(60px,9vw,120px) 0}
.sec-head{max-width:780px;margin-bottom:clamp(44px,7vw,80px)}
.sec-head h2{font-size:clamp(34px,5vw,60px);font-weight:800;line-height:1.06;letter-spacing:-.025em}
.sec-head p{color:var(--muted);margin-top:20px;font-size:17.5px;max-width:60ch;line-height:1.75}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head.center p{margin-left:auto;margin-right:auto}

/* reveal */
.reveal{opacity:0;transform:translateY(36px);transition:opacity .9s var(--ease-out),transform .9s var(--ease-out)}
.reveal.in{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.08s}
.reveal[data-d="2"]{transition-delay:.16s}
.reveal[data-d="3"]{transition-delay:.24s}
.reveal[data-d="4"]{transition-delay:.32s}
.reveal[data-d="5"]{transition-delay:.4s}

/* ---------- 价值主张 ---------- */
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.value{
  position:relative;padding:32px 28px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(160deg,var(--surface),var(--bg-2));overflow:hidden;
  transition:transform .4s var(--ease),border-color .4s var(--ease),box-shadow .4s var(--ease);
}
.value::before{
  content:"";position:absolute;inset:0;border-radius:inherit;opacity:0;transition:opacity .4s;
  background:radial-gradient(400px circle at var(--mx,50%) var(--my,-20%),rgba(183,55,183,.15),transparent 60%);
}
.value:hover{transform:translateY(-8px);border-color:var(--brand);box-shadow:0 30px 80px -40px rgba(183,55,183,.4)}
.value:hover::before{opacity:1}
.value > *{position:relative;z-index:1}
.value .idx{font-family:var(--font-mono);font-size:12px;color:var(--muted-2);margin-bottom:20px;letter-spacing:.12em}
.value .ico{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:rgba(183,55,183,.14);color:var(--brand);font-size:24px;margin-bottom:22px;border:1px solid rgba(183,55,183,.25)}
.value h3{font-size:20px;font-weight:700;margin-bottom:12px;letter-spacing:-.01em}
.value p{font-size:15px;color:var(--muted);line-height:1.7}

/* ---------- 核心业务 —— 画中画堆叠轮播（仿 Framer/TRAE 产品展示） ---------- */
.product-pip{
  position:relative;display:grid;grid-template-columns:320px 1fr;gap:60px;align-items:flex-start;
}
.pip-tabs{display:flex;flex-direction:column;gap:6px;position:sticky;top:calc(var(--nav-h) + 40px)}
.pip-tab{
  text-align:left;padding:22px 24px;border-radius:16px;cursor:pointer;
  background:transparent;border:1px solid transparent;transition:.3s var(--ease);
  position:relative;
}
.pip-tab:hover{background:var(--surface);border-color:var(--line)}
.pip-tab.active{background:var(--surface);border-color:var(--line-strong)}
.pip-tab .p-idx{font-family:var(--font-mono);font-size:11px;color:var(--muted-2);letter-spacing:.12em;margin-bottom:8px}
.pip-tab.active .p-idx{color:var(--brand)}
.pip-tab h4{font-size:17px;font-weight:700;margin-bottom:6px;letter-spacing:-.01em}
.pip-tab p{font-size:13.5px;color:var(--muted);line-height:1.6}
.pip-tab .p-bar{
  position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:3px;background:var(--brand);
  transform:scaleY(0);transform-origin:center;transition:transform .4s var(--ease);
}
.pip-tab.active .p-bar{transform:scaleY(1)}
.pip-stage{
  position:relative;aspect-ratio:16/10;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line-strong);background:#05080f;
  box-shadow:0 40px 100px -40px rgba(0,0,0,.8),0 0 80px -20px rgba(183,55,183,.18);
  min-height:480px;
}
.pip-frame{
  position:absolute;inset:0;display:grid;place-items:center;
  transition:opacity .6s var(--ease),transform .8s var(--ease);
  will-change:transform,opacity;
}
.pip-frame.hidden-frame{opacity:0;transform:scale(.92) translateY(20px);pointer-events:none}
.pip-frame img{width:100%;height:100%;object-fit:cover;object-position:center}
.pip-frame .pip-label{
  position:absolute;left:24px;top:24px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--brand-3);padding:6px 12px;border-radius:8px;background:rgba(0,0,0,.5);backdrop-filter:blur(8px);
  border:1px solid rgba(54,249,167,.25);
}
.pip-frame .pip-caption{
  position:absolute;left:24px;bottom:24px;right:24px;
  padding:20px 24px;border-radius:14px;background:rgba(5,6,10,.7);backdrop-filter:blur(14px);
  border:1px solid var(--line);
}
.pip-frame .pip-caption h5{font-size:18px;font-weight:700;margin-bottom:4px}
.pip-frame .pip-caption p{font-size:14px;color:var(--muted);line-height:1.6}
.pip-frame .pip-more{
  display:inline-flex;align-items:center;gap:6px;margin-top:12px;
  font-size:13px;font-weight:600;color:var(--brand-3);transition:gap .3s var(--ease);
}
.pip-frame .pip-more:hover{gap:10px}
.pip-tag-row{position:absolute;right:24px;top:24px;display:flex;gap:6px}
.pip-tag-row span{font-family:var(--font-mono);font-size:11px;padding:4px 10px;border-radius:8px;background:rgba(183,55,183,.18);color:#d8b4fe;border:1px solid rgba(183,55,183,.3)}

/* ---------- 痛点 / 解法面板 ---------- */
.pain-sol{display:grid;grid-template-columns:1fr 1fr;gap:clamp(20px,4vw,40px)}
.panel{border-radius:var(--radius);border:1px solid var(--line);padding:clamp(28px,4vw,40px);background:var(--bg-2);position:relative;overflow:hidden}
.panel.danger{border-color:rgba(251,113,133,.18);background:linear-gradient(160deg,rgba(251,113,133,.04),var(--bg-2))}
.panel.safe{border-color:rgba(54,249,167,.18);background:linear-gradient(160deg,rgba(54,249,167,.04),var(--bg-2))}
.panel-title{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;margin-bottom:24px}
.panel.danger .panel-title{color:#fb7185}
.panel.safe .panel-title{color:var(--brand-3)}
.pain-item,.capa{display:flex;gap:14px;padding:16px 0;border-top:1px solid var(--line);align-items:flex-start}
.pain-item:first-of-type,.capa:first-of-type{border-top:none}
.pain-item .ph{margin-top:2px;color:var(--muted-2);font-size:18px;flex:none}
.capa .ph{margin-top:2px;color:var(--brand-3);font-size:18px;flex:none}
.pain-item h4,.capa h4{font-size:15.5px;font-weight:600;margin-bottom:4px}
.pain-item p,.capa p{font-size:14px;color:var(--muted);line-height:1.65}

/* ---------- GPU ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px);align-items:center}
.gpu-render{
  border-radius:24px;border:1px solid var(--line-strong);overflow:hidden;position:relative;
  background:linear-gradient(160deg,#0c1220,#070a13);height:100%;min-height:420px;
  box-shadow:0 40px 120px -40px rgba(0,0,0,.8),inset 0 1px 0 rgba(255,255,255,.05);
}
.gpu-render .inner-grid{position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:40px 40px;opacity:.6}
.gpu-chip{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:180px;height:180px;border-radius:28px;
  background:radial-gradient(circle at 35% 30%,rgba(183,55,183,.5),rgba(124,58,237,.12) 70%);
  border:1px solid rgba(183,55,183,.35);
  box-shadow:0 0 100px -10px rgba(183,55,183,.5),inset 0 1px 0 rgba(255,255,255,.2);
  animation:chip-pulse 4s ease-in-out infinite;
}
.gpu-chip::before,.gpu-chip::after{content:"";position:absolute;inset:22px;border:1px solid rgba(183,55,183,.3);border-radius:16px}
.gpu-chip::after{inset:50px;border-radius:10px;background:rgba(54,249,167,.2);border-color:rgba(54,249,167,.4)}
@keyframes chip-pulse{0%,100%{box-shadow:0 0 100px -10px rgba(183,55,183,.5)}50%{box-shadow:0 0 140px -10px rgba(183,55,183,.7)}}
.gpu-label{position:absolute;font-family:var(--font-mono);font-size:11px;color:var(--muted);letter-spacing:.12em}
.feature-list{margin-top:30px}
.feature-list li{display:flex;gap:12px;padding:14px 0;border-top:1px solid var(--line);color:var(--muted);font-size:15px}
.feature-list li .ph{color:var(--brand);font-size:18px;margin-top:1px;flex:none}

/* ---------- TRAE 合作 ---------- */
.coop{
  position:relative;border-radius:28px;border:1px solid var(--line-strong);overflow:hidden;
  background:linear-gradient(140deg,#0c0f1c 0%,#080a15 55%,#06080f 100%);
  padding:clamp(36px,6vw,72px);display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(24px,4vw,64px);align-items:center;
}
.coop::before{content:"";position:absolute;inset:0;background:radial-gradient(50% 80% at 90% 20%,rgba(183,55,183,.2),transparent 65%);pointer-events:none}
.coop-badge{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12px;color:var(--brand-3);letter-spacing:.14em;margin-bottom:22px;font-weight:500}
.coop h2{font-size:clamp(28px,4vw,46px);font-weight:800;line-height:1.08;letter-spacing:-.02em;margin-bottom:18px}
.coop h2 em{font-style:normal;color:var(--brand-3)}
.coop p{color:var(--muted);font-size:16px;max-width:52ch;line-height:1.8}
.coop-tiles{display:grid;gap:14px;position:relative;z-index:2}
.coop-tile{
  display:flex;align-items:center;gap:16px;padding:20px 22px;border-radius:16px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);transition:transform .3s var(--ease),border-color .3s var(--ease),background .3s;
}
.coop-tile:hover{transform:translateX(8px);border-color:var(--brand);background:rgba(183,55,183,.06)}
.coop-tile .ct-ico{width:48px;height:48px;border-radius:12px;flex:none;display:grid;place-items:center;background:rgba(54,249,167,.12);color:var(--brand-3);font-size:22px;border:1px solid rgba(54,249,167,.2)}
.coop-tile h4{font-size:16px;font-weight:600}
.coop-tile p{font-size:13px;color:var(--muted-2);line-height:1.5}

/* ---------- 应用智能体 cards ---------- */
.cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.c3{
  position:relative;border-radius:var(--radius);border:1px solid var(--line);overflow:hidden;
  background:linear-gradient(180deg,var(--surface),var(--bg-2));padding:32px;min-height:280px;
  transition:transform .4s var(--ease),border-color .4s var(--ease),box-shadow .4s var(--ease);
}
.c3::before{
  content:"";position:absolute;inset:0;border-radius:inherit;opacity:0;transition:opacity .4s;
  background:radial-gradient(300px circle at var(--mx,50%) var(--my,0%),rgba(183,55,183,.18),transparent 60%);
}
.c3:hover{transform:translateY(-8px);border-color:var(--brand);box-shadow:0 32px 80px -40px rgba(183,55,183,.4)}
.c3:hover::before{opacity:1}
.c3 > *{position:relative;z-index:1}
.c3.featured{background:linear-gradient(160deg,rgba(183,55,183,.12),var(--bg-2));border-color:rgba(183,55,183,.3)}
.c3 .c-ico{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:rgba(183,55,183,.14);color:var(--brand);font-size:26px;margin-bottom:22px;border:1px solid rgba(183,55,183,.25)}
.c3 h3{font-size:20px;font-weight:700;margin-bottom:10px;letter-spacing:-.01em}
.c3 p{font-size:14.5px;color:var(--muted);line-height:1.7;margin-bottom:18px}
.c3 ul{margin-bottom:2px}
.c3 ul li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted);padding:6px 0}
.c3 ul li .ph{color:var(--brand-3);font-size:14px;flex:none}

/* ---------- 滚动画中画堆叠（GSAP sticky-stack） ---------- */
.pip-scroll-section{position:relative}
.sticky-stack{position:relative}
.stack-card{
  position:sticky;top:0;min-height:100dvh;display:grid;place-items:center;padding:var(--nav-h) 0;
}
.stack-inner{
  width:100%;max-width:1000px;border-radius:28px;border:1px solid var(--line-strong);
  background:linear-gradient(160deg,var(--surface),var(--bg-2));
  padding:clamp(36px,6vw,80px);display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(28px,5vw,64px);align-items:center;
  box-shadow:0 40px 120px -50px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.05);
  overflow:hidden;position:relative;transform-origin:center top;
}
.stack-inner::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(600px circle at 80% 20%,rgba(183,55,183,.18),transparent 60%);
}
.stack-num{font-family:var(--font-mono);font-size:13px;color:var(--brand-3);letter-spacing:.14em;margin-bottom:18px}
.stack-inner h3{font-size:clamp(28px,3.5vw,42px);font-weight:800;line-height:1.1;letter-spacing:-.02em;margin-bottom:18px}
.stack-inner p{color:var(--muted);font-size:16px;line-height:1.75;margin-bottom:20px;max-width:46ch}
.stack-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px}
.stack-tag{font-size:12px;font-family:var(--font-mono);padding:6px 12px;border-radius:8px;border:1px solid var(--line);color:var(--muted)}
.stack-visual{
  position:relative;aspect-ratio:4/5;border-radius:18px;overflow:hidden;border:1px solid var(--line);
  background:#000;box-shadow:0 30px 80px -30px rgba(0,0,0,.8);
}
.stack-visual img{width:100%;height:100%;object-fit:cover;object-position:center}
.stack-visual::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(5,6,10,.8));
}
.stack-visual .sv-label{
  position:absolute;left:20px;bottom:20px;font-family:var(--font-mono);font-size:12px;color:#fff;z-index:2;letter-spacing:.06em;
}
.spacer-h{height:40vh}

/* ---------- 合作伙伴 —— 双列 logo 无限滚动 ---------- */
.logo-swiper{
  display:grid;gap:18px;overflow:hidden;
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}
.logo-row{overflow:hidden}
.logo-track{display:flex;width:max-content;animation:scrollL var(--speed,42s) linear infinite}
.logo-row--rev .logo-track{animation-name:scrollR;--speed:38s}
.logo-swiper:hover .logo-track{animation-play-state:paused}
@keyframes scrollL{to{transform:translateX(-50%)}}
@keyframes scrollR{from{transform:translateX(-50%)}to{transform:translateX(0)}}
.logo-card{
  display:flex;align-items:center;gap:16px;height:88px;padding:0 36px;margin-right:18px;
  border-radius:16px;border:1px solid var(--line);background:var(--surface);flex:none;
  transition:border-color .3s,transform .3s;
}
.logo-card:hover{border-color:var(--brand);transform:translateY(-3px)}
.logo-card img{
  height:38px;width:auto;max-width:140px;object-fit:contain;flex:none;
  filter:grayscale(1);transition:filter .35s,background .35s;
  border-radius:9px;
}
.logo-card img.lc-chip{background:rgba(240,237,247,.92);padding:5px 7px}
.logo-card:hover img{filter:none}
.logo-card .lc-name{
  font-size:15px;font-weight:600;color:var(--muted);letter-spacing:.02em;white-space:nowrap;transition:color .3s;
}
.logo-card:hover .lc-name{color:var(--text)}
.logo-card.lc-text{justify-content:center;min-width:170px}
.logo-card.lc-text .lc-name{font-size:17px}

/* ---------- CTA ---------- */
.cta-big{
  position:relative;text-align:center;overflow:hidden;border-radius:28px;border:1px solid var(--line-strong);
  background:linear-gradient(160deg,#0c0f1c,#080a15);padding:clamp(56px,9vw,120px) clamp(24px,6vw,80px);
}
.cta-big::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(60% 80% at 50% 110%,rgba(183,55,183,.25),transparent 65%);pointer-events:none;
}
.cta-big .eyebrow{justify-content:center}
.cta-big h2{font-size:clamp(34px,6vw,72px);font-weight:800;line-height:1.04;letter-spacing:-.025em;max-width:18ch;margin:0 auto}
.cta-big h2 .hl{background:linear-gradient(120deg,var(--brand),var(--brand-3));-webkit-background-clip:text;background-clip:text;color:transparent}
.cta-big p{color:var(--muted);margin:24px auto 0;max-width:56ch;font-size:18px;line-height:1.75}
.cta-big .hero-cta{justify-content:center;margin-top:38px}

/* ---------- 打勾列表 / 徽章 / 声明（子页组件） ---------- */
.check-list{display:grid;gap:4px}
.check-list li{
  display:flex;align-items:flex-start;gap:12px;padding:10px 0;
  color:var(--muted);font-size:15px;line-height:1.65;
}
.check-list li::before{
  content:"";flex:none;width:20px;height:20px;margin-top:2px;border-radius:50%;
  background:rgba(54,249,167,.12);border:1px solid rgba(54,249,167,.3);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2336F9A7' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E");
  background-size:11px;background-position:center;background-repeat:no-repeat;
}
.chip-row{display:flex;gap:10px;flex-wrap:wrap}
.chip-row--left{justify-content:flex-start}
.badge-chip{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--muted);
  padding:9px 16px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:border-color .3s,color .3s;
}
.badge-chip:hover{border-color:var(--brand);color:var(--text)}
.badge-chip i{color:var(--brand-3);font-style:normal}
.disclaimer{
  margin-top:clamp(28px,4vw,44px);padding:20px 24px;border-radius:14px;
  border:1px dashed var(--line-strong);background:rgba(255,255,255,.02);
  font-size:13px;color:var(--muted-2);line-height:1.7;
}
.disclaimer b{color:var(--muted)}

/* ---------- 步骤卡 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:step}
.step-card{position:relative}
.step-card .step-num{
  font-family:var(--font-mono);font-size:44px;font-weight:700;line-height:1;
  background:linear-gradient(120deg,var(--brand),transparent 80%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:18px;display:block;
}

/* ---------- 对话 mock（高校应用） ---------- */
.mock-panel{
  border-radius:22px;border:1px solid var(--line-strong);overflow:hidden;
  background:linear-gradient(160deg,var(--surface),var(--bg-2));
  box-shadow:0 40px 100px -40px rgba(0,0,0,.8);
}
.mock-panel__inner{padding:26px}
.mock-panel__bar{display:flex;gap:8px;margin-bottom:22px}
.mock-panel__bar i{width:11px;height:11px;border-radius:50%;background:var(--line-strong)}
.mock-panel__bar i:first-child{background:rgba(251,113,133,.5)}
.mock-panel__bar i:nth-child(2){background:rgba(250,204,21,.4)}
.mock-panel__bar i:last-child{background:rgba(54,249,167,.5)}
.mock-chat{display:grid;gap:14px}
.msg{
  max-width:82%;padding:14px 18px;border-radius:16px;font-size:14px;line-height:1.65;
  animation:msg-in .5s var(--ease) both;
}
.msg--ai{
  background:rgba(183,55,183,.1);border:1px solid rgba(183,55,183,.25);
  color:var(--text);border-top-left-radius:4px;
}
.msg--me{
  background:rgba(54,249,167,.08);border:1px solid rgba(54,249,167,.22);
  color:var(--text);margin-left:auto;border-top-right-radius:4px;
}
.msg:nth-child(2){animation-delay:.15s}
.msg:nth-child(3){animation-delay:.3s}
@keyframes msg-in{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.mock-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.mock-cell{
  border:1px solid var(--line);border-radius:12px;padding:14px 16px;
  font-size:13px;color:var(--muted);display:flex;flex-direction:column;gap:2px;background:rgba(255,255,255,.02);
}
.mock-cell b{color:var(--text);font-size:13px}
.mock-cell.is-hot{border-color:rgba(54,249,167,.35);background:rgba(54,249,167,.05)}
.bar-track{height:6px;border-radius:6px;background:var(--line);overflow:hidden;margin-top:8px}
.bar-fill{height:100%;border-radius:6px;background:linear-gradient(90deg,var(--brand),var(--brand-3))}
.bar-fill--cyan{background:linear-gradient(90deg,var(--accent),var(--brand-3))}

/* ---------- 特性行（图文交错） ---------- */
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px);align-items:center;
  margin-bottom:clamp(56px,8vw,100px);
}
.feature-row:last-child{margin-bottom:0}
.feature-row h3{font-size:clamp(22px,2.6vw,30px);font-weight:700;letter-spacing:-.015em;margin-bottom:16px}
.feature-row .lead{font-size:15.5px;color:var(--muted);line-height:1.8;margin-bottom:22px;max-width:52ch}

/* ---------- 时间线（关于我们） ---------- */
.timeline{position:relative;display:grid;gap:0;padding-left:30px}
.timeline::before{
  content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-3));opacity:.4;
}
.tl-item{position:relative;padding:0 0 40px 26px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:6px;width:16px;height:16px;border-radius:50%;
  background:var(--bg);border:3px solid var(--brand);box-shadow:0 0 16px rgba(183,55,183,.5);
}
.tl-item .tl-year{font-family:var(--font-mono);font-size:13px;color:var(--brand-3);letter-spacing:.1em;margin-bottom:6px}
.tl-item h4{font-size:17px;font-weight:700;margin-bottom:6px}
.tl-item p{font-size:14px;color:var(--muted);line-height:1.7;max-width:56ch}

/* ---------- 表单（联系我们） ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-field{display:flex;flex-direction:column;gap:8px}
.form-field--full{grid-column:1/-1}
.form-field label{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.02em}
.form-field input,.form-field select,.form-field textarea{
  font-family:var(--font-display);font-size:15px;color:var(--text);
  background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:12px;
  padding:14px 16px;outline:none;transition:border-color .3s,box-shadow .3s;
  appearance:none;-webkit-appearance:none;
}
.form-field select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239aa0b4' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:16px;
}
.form-field textarea{min-height:130px;resize:vertical}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(183,55,183,.15);
}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--muted-2)}
.form-ok{
  display:none;margin-top:18px;padding:14px 18px;border-radius:12px;
  border:1px solid rgba(54,249,167,.35);background:rgba(54,249,167,.08);
  color:var(--brand-3);font-size:14px;font-weight:600;
}
.form-ok.show{display:block}

/* ---------- 联系方式卡 ---------- */
.contact-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.contact-card{
  padding:32px 28px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(160deg,var(--surface),var(--bg-2));
  transition:transform .35s var(--ease),border-color .35s;
}
.contact-card:hover{transform:translateY(-6px);border-color:var(--brand)}
.contact-card .cc-ico{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  background:rgba(183,55,183,.14);color:var(--brand);font-size:24px;margin-bottom:20px;
  border:1px solid rgba(183,55,183,.25);
}
.contact-card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.contact-card p{font-size:14px;color:var(--muted);line-height:1.7}
.contact-card .cc-val{margin-top:12px;font-size:16px;font-weight:700;color:var(--brand-3);font-family:var(--font-mono)}

/* ============================================================
   ============ TRAE 风格 GIANT FOOTER ============
   ============================================================ */
.mega-footer-wrap{position:relative;margin-top:80px}

/* 巨型品牌字区 */
.mega-word{
  position:relative;background:var(--brand);padding:clamp(80px,14vw,180px) 0 clamp(100px,16vw,220px);
  overflow:hidden;
}
.mega-word::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 50%,rgba(54,249,167,.2),transparent 70%),
    repeating-linear-gradient(45deg,transparent 0 2px,rgba(255,255,255,.03) 2px 4px);
  pointer-events:none;
}
.mega-word-inner{position:relative;z-index:2;text-align:center}
.mega-word .big-cta-text{
  font-size:clamp(16px,2vw,22px);color:rgba(255,255,255,.85);font-weight:500;
  margin-bottom:30px;letter-spacing:.02em;
}
.mega-word .big-btn{
  display:inline-flex;align-items:center;gap:10px;
  background:#000;color:var(--brand-3);font-size:16px;font-weight:700;
  padding:18px 36px;border-radius:999px;
  box-shadow:0 20px 60px -20px rgba(0,0,0,.5);
  transition:transform .3s var(--ease),box-shadow .3s;
}
.mega-word .big-btn:hover{transform:translateY(-3px);box-shadow:0 30px 80px -20px rgba(0,0,0,.6)}
.mega-word .big-btn i{transition:transform .3s}
.mega-word .big-btn:hover i{transform:translateX(4px)}
/* 巨型 XHT 像素字 */
.xht-big{
  display:flex;justify-content:center;align-items:flex-end;gap:clamp(8px,2vw,30px);
  margin-top:clamp(40px,7vw,80px);user-select:none;
}
.xht-letter{
  font-family:var(--font-mono);
  font-size:clamp(100px,22vw,320px);
  font-weight:900;
  line-height:.85;
  color:#000;
  letter-spacing:-.04em;
  text-shadow:6px 6px 0 rgba(0,0,0,.2);
  transform:skewX(-3deg);
  transition:transform .6s var(--ease);
  position:relative;
}
.xht-letter:nth-child(2){transform:skewX(-3deg) translateY(clamp(12px,2vw,24px));color:rgba(0,0,0,.75)}
.xht-letter:nth-child(3){transform:skewX(-3deg) translateY(0)}
.xht-big:hover .xht-letter{transform:skewX(-3deg) scale(1.04)}
.xht-big:hover .xht-letter:nth-child(2){transform:skewX(-3deg) translateY(6px) scale(1.04)}
.xht-tag{
  display:inline-flex;align-items:center;gap:12px;
  margin-top:clamp(20px,4vw,40px);font-family:var(--font-mono);font-size:clamp(11px,1.2vw,14px);
  color:#000;letter-spacing:.24em;text-transform:uppercase;font-weight:600;
  padding:8px 18px;border:1.5px solid #000;border-radius:999px;
}
.mega-arrow-down{
  position:absolute;bottom:30px;left:50%;transform:translateX(-50%);
  width:40px;height:40px;border-radius:50%;border:1.5px solid rgba(0,0,0,.4);
  display:grid;place-items:center;color:#000;font-size:18px;animation:bounce-y 2s ease-in-out infinite;
}
@keyframes bounce-y{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(8px)}}

/* 实际 footer 信息条 */
.footer-info{background:#000;color:#fff;padding:60px 0 40px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.footer-info h4{font-size:13px;color:var(--brand-3);margin-bottom:18px;letter-spacing:.08em;text-transform:uppercase;font-weight:600;font-family:var(--font-mono)}
.footer-info a,.footer-info p{display:block;font-size:14px;color:rgba(255,255,255,.6);padding:6px 0;transition:color .2s}
.footer-info a:hover{color:var(--brand-3)}
.footer-info .brand-block{padding-right:20px}
.footer-info .brand-block .brand-logo-dark{height:38px;margin-bottom:18px;display:block;filter:brightness(0) invert(1)}
.footer-info .f-desc{color:rgba(255,255,255,.5);font-size:14px;line-height:1.7;max-width:32ch;margin-bottom:22px}
.qr-row{display:flex;gap:16px}
.qr{width:90px;height:90px;border-radius:12px;background:#111;border:1px solid #222;display:grid;place-items:center;color:var(--muted);font-size:11px;font-family:var(--font-mono);text-align:center;letter-spacing:.02em}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-top:28px;border-top:1px solid rgba(255,255,255,.08);flex-wrap:wrap}
.footer-bottom p{font-size:12px;color:rgba(255,255,255,.4);font-family:var(--font-mono);letter-spacing:.04em}
.social-row{display:flex;gap:10px}
.social-row a{
  width:36px;height:36px;border-radius:10px;border:1px solid rgba(255,255,255,.1);
  display:grid;place-items:center;color:rgba(255,255,255,.5);transition:.25s var(--ease);
}
.social-row a:hover{border-color:var(--brand-3);color:var(--brand-3);transform:translateY(-2px)}
.back-to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  background:var(--brand);color:#fff;display:grid;place-items:center;cursor:pointer;
  box-shadow:0 10px 30px -10px rgba(183,55,183,.6);
  opacity:0;pointer-events:none;transform:translateY(12px);
  transition:.3s var(--ease);z-index:40;border:none;
}
.back-to-top.show{opacity:1;pointer-events:auto;transform:none}
.back-to-top:hover{background:var(--brand-2);transform:translateY(-3px)}

/* ---------- 响应式 ---------- */
@media(max-width:1080px){
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr 1fr}
}
@media(max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-viz{height:auto;max-width:560px;gap:36px;padding:24px 0 56px}
  .viz-tag{position:static;align-self:flex-start}
  .hero-card{width:min(420px,80vw);padding:20px 22px}
  .word-fixed{font-size:clamp(60px,12vw,100px)}
  .word-stack-wrap{height:clamp(60px,12vw,100px);margin-left:12px}
  .product-pip{grid-template-columns:1fr;gap:30px}
  .pip-tabs{flex-direction:row;overflow-x:auto;position:static;gap:10px;padding-bottom:8px}
  .pip-tab{min-width:240px;flex:none;padding:18px}
  .pip-tab .p-bar{display:none}
  .split{grid-template-columns:1fr}
  .coop{grid-template-columns:1fr}
  .cards3,.values{grid-template-columns:1fr 1fr}
  .pain-sol{grid-template-columns:1fr}
  .stack-inner{grid-template-columns:1fr;gap:30px}
  .stack-visual{aspect-ratio:16/10;max-height:300px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .feature-row{grid-template-columns:1fr}
  .feature-row--rev .feature-row__media{order:-1}
  .steps{grid-template-columns:1fr}
  .contact-cards{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  .nav-links,.nav .btn{display:none}
  .nav-burger{display:grid}
  .cards3,.values{grid-template-columns:1fr}
  .hero-metrics{gap:22px;flex-wrap:wrap}
  .hero-metrics .num{font-size:24px}
  .gpu-render{min-height:320px}
  .footer-grid{grid-template-columns:1fr}
  .xht-letter{font-size:clamp(80px,20vw,180px)}
  .footer-bottom{flex-direction:column;text-align:center}
  .qr-row{justify-content:flex-start}
  .logo-card{height:72px;padding:0 24px}
  .logo-card img{height:30px;max-width:110px}
  .mock-row{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
  .marquee-track{animation:none}
  .aurora::before,.aurora::after{animation:none}
  .gpu-chip{animation:none}
  .mega-arrow-down{animation:none}
  .logo-track{animation:none}
  .hero-cards-track{animation:none}
}