/* ============================================================
   千川太初科技有限公司 · ORIGINFLOW
   Warm white / clay coral visual system
   Strong motion layer by Codex · 2026-07-24
   ============================================================ */

:root{
  --bg:#ffffff;
  --paper:#fbfaf8;
  --paper-2:#f5f1eb;
  --paper-3:#eee8df;
  --ink:#171513;
  --ink-2:#2b2724;
  --muted:#68615b;
  --faint:#948b83;
  --line:#e7e1da;
  --line-strong:#d7cec5;
  --brand:#d97757;
  --brand-light:#edaa8d;
  --brand-deep:#b95537;
  --brand-dark:#83381f;
  --dark:#1c1917;
  --dark-2:#27211d;
  --success:#337c58;
  --serif:"Songti SC","STSong","Noto Serif SC",Georgia,serif;
  --sans:ui-sans-serif,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Segoe UI",sans-serif;
  --wrap:1240px;
  --nav-h:76px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
  --shadow-sm:0 8px 24px -18px rgba(56,39,28,.35);
  --shadow-md:0 24px 70px -38px rgba(56,39,28,.42);
  --shadow-lg:0 45px 110px -54px rgba(56,39,28,.48);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--nav-h) + 18px);overflow-x:hidden}
body{
  min-width:320px;
  background:var(--bg);
  color:var(--ink-2);
  font-family:var(--sans);
  line-height:1.65;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
::selection{background:rgba(217,119,87,.24);color:var(--ink)}
a{color:inherit;text-decoration:none}
button{color:inherit}
img{display:block;max-width:100%}
h1,h2,h3,h4{color:var(--ink);font-weight:760;letter-spacing:-.045em;line-height:1.08}
p{max-width:72ch}
.wrap{width:min(100%,var(--wrap));margin:0 auto;padding-inline:32px}
.section{position:relative;padding:clamp(96px,11vw,160px) 0}
[id]{scroll-margin-top:calc(var(--nav-h) + 18px)}

.skip-link{
  position:fixed;left:16px;top:10px;z-index:500;
  padding:10px 16px;border-radius:10px;background:var(--dark);color:#fff;
  font-size:13px;transform:translateY(-150%);transition:transform .2s;
}
.skip-link:focus{transform:none}
:focus-visible{outline:3px solid rgba(217,119,87,.46);outline-offset:4px}

/* ---------- global motion ---------- */
.js .reveal{
  opacity:0;
  transform:translateY(32px);
  transition:opacity .9s var(--ease-out),transform .9s var(--ease-out);
  transition-delay:var(--reveal-delay,0ms);
}
.js .reveal.in{opacity:1;transform:none}
.js .reveal.tilt-card{
  transform:perspective(1100px) translateY(32px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));
}
.js .reveal.in.tilt-card{
  transform:perspective(1100px) translateY(0) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));
}
.tilt-card{transform-style:preserve-3d;transition:transform .35s var(--ease-out),box-shadow .35s var(--ease-out),border-color .35s}
.spotlight-card{--mx:50%;--my:50%;position:relative;isolation:isolate}
.spotlight-card::before{
  content:"";position:absolute;inset:0;z-index:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(480px circle at var(--mx) var(--my),rgba(217,119,87,.14),transparent 42%);
  opacity:0;transition:opacity .3s;
}
.spotlight-card:hover::before{opacity:1}
.spotlight-card>*{position:relative;z-index:1}
.pointer-aura{
  position:fixed;left:0;top:0;z-index:4;width:320px;height:320px;border-radius:50%;
  pointer-events:none;opacity:0;
  background:radial-gradient(circle,rgba(217,119,87,.075),transparent 68%);
  transform:translate3d(calc(var(--pointer-x, -400px) - 50%),calc(var(--pointer-y, -400px) - 50%),0);
  transition:opacity .35s;
}
body.pointer-active .pointer-aura{opacity:1}
.scroll-progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:180;pointer-events:none}
.scroll-progress span{display:block;width:100%;height:100%;background:linear-gradient(90deg,var(--brand-light),var(--brand),var(--brand-deep));transform:scaleX(0);transform-origin:left}

/* ---------- intro ---------- */
.site-intro{
  position:fixed;inset:0;z-index:400;display:grid;place-items:center;align-content:center;gap:28px;
  background:var(--dark);color:#fff;pointer-events:none;
  animation:introExit .78s 1.25s var(--ease-out) forwards;
}
.site-intro::before{
  content:"";position:absolute;inset:0;
  background:repeating-radial-gradient(circle at 50% 50%,transparent 0 54px,rgba(255,255,255,.045) 55px 56px);
  opacity:.7;animation:introRings 1.4s var(--ease-out) both;
}
.intro-mark{width:74px;height:74px;position:relative;display:grid;place-items:center}
.intro-mark img{width:50px;height:50px;position:relative;z-index:2;animation:introLogo .9s var(--ease-out) both}
.intro-mark span{position:absolute;inset:0;border:1px solid rgba(217,119,87,.5);border-radius:50%;animation:introPulse 1.4s ease-out both}
.intro-mark span:nth-child(2){animation-delay:.14s}
.intro-mark span:nth-child(3){animation-delay:.28s}
.site-intro p{position:relative;font-size:10px;font-weight:700;letter-spacing:.42em;opacity:0;animation:introText .7s .35s var(--ease-out) forwards}
body.intro-complete .site-intro{opacity:0;visibility:hidden;transition:opacity .45s,visibility .45s}
@keyframes introExit{to{opacity:0;visibility:hidden}}
@keyframes introLogo{0%{opacity:0;transform:scale(.65) rotate(-18deg)}100%{opacity:1;transform:none}}
@keyframes introPulse{0%{opacity:0;transform:scale(.2)}60%{opacity:.7}100%{opacity:0;transform:scale(2.25)}}
@keyframes introRings{0%{opacity:0;transform:scale(.7)}100%{opacity:.8;transform:scale(1.08)}}
@keyframes introText{to{opacity:.72}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:13px;min-height:50px;
  padding:13px 23px;border:1px solid transparent;border-radius:999px;
  font:650 14px/1 var(--sans);letter-spacing:.01em;white-space:nowrap;
  transition:background .28s,border-color .28s,color .28s,box-shadow .28s,transform .2s;
}
.btn-dark{background:var(--dark);color:#fff;border-color:var(--dark);box-shadow:var(--shadow-sm)}
.btn-dark:hover{background:var(--brand-deep);border-color:var(--brand-deep);box-shadow:0 18px 38px -24px rgba(185,85,55,.7)}
.btn-ghost{background:rgba(255,255,255,.72);border-color:var(--line-strong);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-deep);background:#fff}
.btn-light{background:#fff;color:var(--ink);border-color:#fff}
.btn-light:hover{background:var(--brand);border-color:var(--brand);color:#fff}
.btn .arr{font-size:17px;transition:transform .3s var(--ease-out)}
.btn:hover .arr{transform:translate(3px,-2px)}

/* ============ NAV ============ */
.nav{
  position:fixed;z-index:160;top:0;left:0;right:0;height:var(--nav-h);
  transition:background .4s,border-color .4s,backdrop-filter .4s,box-shadow .4s;
}
.nav.scrolled{
  background:rgba(251,250,248,.84);border-bottom:1px solid rgba(215,206,197,.72);
  backdrop-filter:saturate(150%) blur(18px);box-shadow:0 10px 35px -30px rgba(23,21,19,.45);
}
.nav-inner{width:min(100%,var(--wrap));height:100%;margin:auto;padding:0 32px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;will-change:transform}
.brand-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:var(--brand);box-shadow:var(--shadow-sm)}
.brand-mark img{width:31px;height:31px;object-fit:contain}
.brand-mark.lg{width:52px;height:52px;border-radius:15px}
.brand-mark.lg img{width:40px;height:40px}
.brand-word{display:flex;flex-direction:column;line-height:1}
.brand-word b{font-size:16px;letter-spacing:.04em;color:var(--ink)}
.brand-word i{margin-top:5px;color:var(--faint);font-size:7px;font-style:normal;font-weight:700;letter-spacing:.26em}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{position:relative;padding:9px 0;color:var(--muted);font-size:13.5px;font-weight:540;transition:color .25s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:2px;width:100%;height:2px;border-radius:2px;background:var(--brand);transform:scaleX(0);transform-origin:right;transition:transform .35s var(--ease-out)}
.nav-links a:hover,.nav-links a.active{color:var(--ink)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1);transform-origin:left}
.nav-right{display:flex;align-items:center;gap:12px}
.lang-toggle{
  padding:8px 13px;border:1px solid var(--line-strong);border-radius:999px;background:rgba(255,255,255,.72);
  font:650 11px/1 var(--sans);letter-spacing:.05em;cursor:pointer;will-change:transform;
}
.lang-toggle:hover{border-color:var(--brand)}
.lang-sep{margin:0 3px;opacity:.35}
body[data-lang="zh"] .lang-zh,body[data-lang="en"] .lang-en{color:var(--brand-deep)}
.nav-burger{display:none;width:42px;height:42px;border:0;background:transparent;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-burger span{display:block;width:22px;height:2px;border-radius:2px;background:var(--ink);transition:transform .3s,opacity .3s}

/* ============ HERO ============ */
.hero{
  position:relative;min-height:max(760px,100svh);display:flex;align-items:center;
  padding:calc(var(--nav-h) + 70px) 0 82px;overflow:hidden;background:var(--paper);
}
.hero-grid{
  position:absolute;inset:0;opacity:.48;pointer-events:none;
  background-image:linear-gradient(rgba(43,39,36,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(43,39,36,.045) 1px,transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:linear-gradient(to bottom,#000 0%,transparent 78%);
  mask-image:linear-gradient(to bottom,#000 0%,transparent 78%);
  animation:gridDrift 18s linear infinite;
}
.hero-wash{position:absolute;border-radius:50%;filter:blur(4px);pointer-events:none}
.wash-one{width:560px;height:560px;right:-150px;top:-170px;background:radial-gradient(circle,rgba(217,119,87,.16),transparent 68%)}
.wash-two{width:420px;height:420px;left:-190px;bottom:-170px;background:radial-gradient(circle,rgba(217,119,87,.10),transparent 70%)}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.18fr) minmax(410px,.82fr);align-items:center;gap:clamp(40px,6vw,86px)}
.hero-copy{position:relative;z-index:2}
.eyebrow{display:flex;align-items:center;gap:10px;margin-bottom:28px;color:var(--muted);font-size:10px;font-weight:700;letter-spacing:.19em;text-transform:uppercase}
.eyebrow-dot{width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 5px rgba(217,119,87,.12);animation:dotPulse 2.2s infinite}
.hero-title{font-size:clamp(44px,5.6vw,78px);max-width:900px}
.title-line{display:block;overflow:hidden;padding-bottom:.07em}
.title-line>span{display:block;transform:translateY(118%);animation:titleRise 1.1s var(--ease-out) forwards}
.title-line:nth-child(1)>span{animation-delay:1.38s}
.title-line:nth-child(2)>span{animation-delay:1.48s}
.title-line:nth-child(3)>span{animation-delay:1.62s}
.title-en{font-family:var(--serif);font-weight:650}
.title-en em,.title-cn{font-style:normal;background:linear-gradient(100deg,var(--brand-light),var(--brand),var(--brand-deep));-webkit-background-clip:text;background-clip:text;color:transparent}
.title-cn{margin-top:16px;font-family:var(--sans);font-size:.53em;font-weight:760;letter-spacing:-.035em}
.hero-lead{margin-top:30px;max-width:680px;color:var(--muted);font-size:clamp(15px,1.35vw,18px);line-height:1.85}
.hero-note{margin-top:8px;color:var(--brand-deep);font-size:14px;font-weight:620}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.hero-entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:48px;max-width:730px}
.hero-entry{padding:18px 17px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.63);overflow:hidden;transition:border-color .3s,background .3s,transform .3s var(--ease-out),box-shadow .3s}
.hero-entry:hover{border-color:rgba(217,119,87,.5);background:#fff;transform:translateY(-5px);box-shadow:var(--shadow-md)}
.hero-entry>span{display:block;margin-bottom:20px;color:var(--brand);font-size:10px;font-weight:750;letter-spacing:.12em}
.hero-entry b{display:block;color:var(--ink);font-size:13px}
.hero-entry small{display:block;margin-top:4px;color:var(--faint);font-size:11px}
.hero-enter{opacity:0;transform:translateY(18px);animation:heroEnter .9s calc(1.28s + var(--delay,0s)) var(--ease-out) forwards}

/* Hero system */
.hero-system{position:relative;width:min(100%,560px);aspect-ratio:1;margin:auto;will-change:transform}
.system-halo,.system-orbit{position:absolute;inset:50%;border-radius:50%;transform:translate(-50%,-50%);pointer-events:none}
.system-halo{filter:blur(1px)}
.halo-a{width:66%;height:66%;background:radial-gradient(circle,rgba(217,119,87,.22),rgba(217,119,87,.03) 48%,transparent 72%);animation:haloBreath 4.8s ease-in-out infinite}
.halo-b{width:105%;height:105%;background:repeating-radial-gradient(circle,transparent 0 37px,rgba(217,119,87,.07) 38px 39px);-webkit-mask-image:radial-gradient(circle,#000,transparent 72%);mask-image:radial-gradient(circle,#000,transparent 72%);animation:slowSpin 34s linear infinite}
.system-orbit{border:1px solid rgba(185,85,55,.23)}
.system-orbit::before{content:"";position:absolute;width:8px;height:8px;border-radius:50%;top:50%;left:-4px;background:var(--brand);box-shadow:0 0 16px rgba(217,119,87,.75)}
.orbit-a{width:46%;height:46%;animation:orbitSpin 10s linear infinite}
.orbit-b{width:70%;height:70%;border-style:dashed;animation:orbitSpin 17s linear infinite reverse}
.orbit-c{width:94%;height:94%;animation:orbitSpin 25s linear infinite}
.system-core{
  position:absolute;left:50%;top:50%;width:150px;height:150px;transform:translate(-50%,-50%);z-index:3;
  display:flex;align-items:center;justify-content:center;flex-direction:column;border-radius:50%;
  color:#fff;background:radial-gradient(circle at 35% 28%,#ef9c79,var(--brand) 50%,var(--brand-deep));
  box-shadow:0 30px 70px -24px rgba(185,85,55,.75),inset 0 1px rgba(255,255,255,.42);
  animation:coreFloat 5s ease-in-out infinite;
}
.system-core img{width:54px;height:54px;margin-bottom:3px}
.system-core b{font-size:8px;letter-spacing:.16em}
.system-core small{font-size:6px;letter-spacing:.18em;opacity:.72}
.core-pulse{position:absolute;inset:-14px;border:1px solid rgba(217,119,87,.35);border-radius:50%;animation:corePulse 2.6s ease-out infinite}
.system-node{
  position:absolute;z-index:4;min-width:104px;padding:9px 12px;border:1px solid rgba(185,85,55,.24);border-radius:12px;
  background:rgba(255,255,255,.88);backdrop-filter:blur(8px);box-shadow:var(--shadow-sm);
  animation:nodeFloat 4.4s ease-in-out infinite;
}
.system-node i{float:left;margin-right:7px;color:var(--brand);font:700 8px/1.4 var(--sans)}
.system-node b{display:block;color:var(--ink);font-size:10px;line-height:1.2}
.system-node span{display:block;margin-top:2px;color:var(--faint);font-size:6px;font-weight:700;letter-spacing:.13em}
.node-1{left:4%;top:46%}.node-2{left:20%;top:9%;animation-delay:-1.2s}.node-3{right:15%;top:12%;animation-delay:-2.4s}
.node-4{right:-1%;top:48%;animation-delay:-.7s}.node-5{right:13%;bottom:8%;animation-delay:-1.8s}.node-6{left:15%;bottom:10%;animation-delay:-3s}
.data-particle{position:absolute;width:4px;height:4px;border-radius:50%;background:var(--brand);box-shadow:0 0 12px var(--brand)}
.p1{left:22%;top:30%;animation:particle 4.2s linear infinite}.p2{right:18%;top:35%;animation:particle 5.1s -1.2s linear infinite}
.p3{right:28%;bottom:20%;animation:particle 4.6s -2.1s linear infinite}.p4{left:30%;bottom:19%;animation:particle 5.4s -.6s linear infinite}
.hero-scroll{position:absolute;left:50%;bottom:24px;display:flex;align-items:center;gap:12px;transform:translateX(-50%) rotate(90deg);transform-origin:center;color:var(--faint);font-size:7px;font-weight:750;letter-spacing:.22em}
.hero-scroll i{display:block;width:54px;height:1px;background:var(--line-strong);overflow:hidden}
.hero-scroll i::after{content:"";display:block;width:50%;height:100%;background:var(--brand);animation:scrollLine 2s ease-in-out infinite}

@keyframes titleRise{to{transform:none}}
@keyframes heroEnter{to{opacity:1;transform:none}}
@keyframes gridDrift{to{background-position:72px 72px}}
@keyframes dotPulse{50%{box-shadow:0 0 0 9px rgba(217,119,87,0)}}
@keyframes haloBreath{50%{transform:translate(-50%,-50%) scale(1.12);opacity:.7}}
@keyframes slowSpin{to{transform:translate(-50%,-50%) rotate(360deg)}}
@keyframes orbitSpin{to{transform:translate(-50%,-50%) rotate(360deg)}}
@keyframes coreFloat{50%{transform:translate(-50%,-54%)}}
@keyframes corePulse{0%{transform:scale(.78);opacity:0}45%{opacity:.65}100%{transform:scale(1.34);opacity:0}}
@keyframes nodeFloat{50%{transform:translateY(-7px)}}
@keyframes particle{0%{opacity:0;transform:scale(.3)}25%{opacity:1}70%{opacity:.7}100%{opacity:0;transform:translate(42px,-34px) scale(1.3)}}
@keyframes scrollLine{0%{transform:translateX(-110%)}100%{transform:translateX(220%)}}

/* ---------- marquee ---------- */
.marquee{position:relative;z-index:3;overflow:hidden;border-block:1px solid var(--line);background:#fff;transform:rotate(-1deg) scale(1.02)}
.marquee-track{display:flex;align-items:center;width:max-content;padding:18px 0;animation:marquee 28s linear infinite}
.marquee-track span{padding:0 25px;color:var(--ink);font-family:var(--serif);font-size:13px;font-weight:700;letter-spacing:.09em}
.marquee-track i{color:var(--brand);font-style:normal}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ============ SHARED SECTION ============ */
.sec-index{color:var(--brand);font-size:10px;font-weight:750;letter-spacing:.2em}
.sec-head{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(280px,.7fr);gap:80px;align-items:end;margin-bottom:clamp(56px,7vw,94px)}
.sec-tag{display:inline-flex;margin-bottom:20px;color:var(--brand-deep);font-size:10px;font-weight:750;letter-spacing:.18em;text-transform:uppercase}
.sec-tag::before{content:"";width:28px;height:1px;margin:auto 10px auto 0;background:currentColor}
.sec-tag.light{color:var(--brand-light)}
.sec-head h2{max-width:790px;font-size:clamp(34px,4.8vw,62px)}
.sec-head>p{color:var(--muted);font-size:15px;line-height:1.85}

/* ============ STATEMENT ============ */
.statement{background:#fff}
.statement-grid{display:grid;grid-template-columns:180px 1fr;gap:42px}
.statement-copy{max-width:940px}
.statement-kicker{margin-bottom:20px;color:var(--brand-deep);font-size:13px;font-weight:650}
.statement-copy h2{font-family:var(--serif);font-size:clamp(34px,4.6vw,62px);line-height:1.26;font-weight:650}
.statement-detail{display:grid;grid-template-columns:1fr 1fr;gap:38px;margin-top:48px;padding-top:32px;border-top:1px solid var(--line)}
.statement-detail p{color:var(--muted);font-size:14px;line-height:1.9}

/* ============ FLYWHEEL ============ */
.ecosystem{background:var(--paper);overflow:clip}
.ecosystem::before{content:"";position:absolute;right:-220px;top:120px;width:560px;height:560px;border-radius:50%;background:radial-gradient(circle,rgba(217,119,87,.11),transparent 67%)}
.flywheel-layout{display:grid;grid-template-columns:minmax(430px,.92fr) minmax(420px,1.08fr);gap:clamp(60px,8vw,120px);align-items:start}
.flywheel-sticky{position:sticky;top:calc(var(--nav-h) + 28px)}
.flywheel-visual{position:relative;width:min(100%,540px);aspect-ratio:1;margin:auto}
.wheel-grid{position:absolute;inset:11%;border-radius:50%;background:repeating-radial-gradient(circle,transparent 0 39px,rgba(217,119,87,.085) 40px 41px)}
.wheel-ring{position:absolute;inset:13%;border-radius:50%}
.ring-outer{border:1px solid var(--line-strong)}
.ring-inner{inset:29%;border:1px dashed rgba(217,119,87,.34);animation:wheelSpin 24s linear infinite}
.ring-progress{
  background:conic-gradient(from -90deg,var(--brand) calc(var(--flywheel-progress) * 1turn),rgba(217,119,87,.07) 0);
  -webkit-mask:radial-gradient(farthest-side,transparent calc(100% - 4px),#000 calc(100% - 3px));
  mask:radial-gradient(farthest-side,transparent calc(100% - 4px),#000 calc(100% - 3px));
  filter:drop-shadow(0 0 8px rgba(217,119,87,.38));
  transition:background .65s var(--ease-out);
}
.wheel-core{
  position:absolute;left:50%;top:50%;width:165px;height:165px;transform:translate(-50%,-50%);
  display:flex;flex-direction:column;align-items:center;justify-content:center;border-radius:50%;color:#fff;
  background:linear-gradient(145deg,var(--brand-light),var(--brand) 48%,var(--brand-deep));box-shadow:0 28px 70px -22px rgba(185,85,55,.72);
}
.wheel-core::after{content:"";position:absolute;inset:-13px;border:1px solid rgba(217,119,87,.3);border-radius:50%;animation:corePulse 2.8s ease-out infinite}
.wheel-core img{width:52px;height:52px}
.wheel-core>span{position:absolute;top:20px;font-size:7px;font-weight:750;letter-spacing:.16em;opacity:.7}
.wheel-core b{font-size:11px;letter-spacing:.14em}
.wheel-core small{margin-top:2px;font-size:6px;letter-spacing:.13em;opacity:.7}
.wheel-node{
  position:absolute;z-index:4;display:flex;align-items:center;gap:7px;padding:8px 11px;
  border:1px solid var(--line-strong);border-radius:999px;background:rgba(255,255,255,.93);box-shadow:var(--shadow-sm);
  color:var(--muted);font-family:var(--sans);cursor:pointer;transition:background .35s,color .35s,border-color .35s,transform .35s var(--ease-out),box-shadow .35s;
}
.wheel-node i{color:var(--brand);font:700 7px/1 var(--sans)}
.wheel-node b{font-size:9px;letter-spacing:.02em}
.wheel-node:hover,.wheel-node.active{color:#fff;background:var(--dark);border-color:var(--dark);transform:scale(1.08);box-shadow:0 14px 35px -20px rgba(23,21,19,.8)}
.wheel-node.active i{color:var(--brand-light)}
.wn-1{left:50%;top:7%;transform:translateX(-50%)}.wn-1:hover,.wn-1.active{transform:translateX(-50%) scale(1.08)}
.wn-2{right:2%;top:28%}.wn-3{right:2%;bottom:26%}
.wn-4{left:50%;bottom:5%;transform:translateX(-50%)}.wn-4:hover,.wn-4.active{transform:translateX(-50%) scale(1.08)}
.wn-5{left:0;bottom:26%}.wn-6{left:0;top:28%}
.wheel-feedback{position:absolute;left:50%;bottom:-10px;display:flex;align-items:center;gap:8px;transform:translateX(-50%);color:var(--brand-deep)}
.wheel-feedback span{font-size:24px;animation:feedbackSpin 3.4s linear infinite}
.wheel-feedback small{white-space:nowrap;font-size:9px;font-weight:650;letter-spacing:.08em}
.flywheel-steps{padding-top:38px}
.flywheel-step{display:grid;grid-template-columns:70px 1fr;gap:22px;min-height:220px;padding:42px 30px;border-top:1px solid var(--line-strong);opacity:.42;transition:opacity .5s,transform .5s,border-color .5s}
.flywheel-step:last-child{border-bottom:1px solid var(--line-strong)}
.flywheel-step.active{opacity:1;transform:translateX(10px);border-color:var(--brand)}
.step-no{padding-top:2px;color:var(--brand);font:650 12px/1 var(--serif)}
.flywheel-step div>p:first-child{margin-bottom:9px;color:var(--faint);font-size:8px;font-weight:750;letter-spacing:.16em}
.flywheel-step h3{margin-bottom:13px;font-size:clamp(25px,3vw,38px)}
.flywheel-step div>p:last-child{color:var(--muted);font-size:14px;line-height:1.85}
@keyframes wheelSpin{to{transform:rotate(360deg)}}
@keyframes feedbackSpin{to{transform:rotate(-360deg)}}

/* ============ BUSINESS ============ */
.business{background:#fff}
.business-card{position:relative;margin-top:24px;padding:clamp(30px,4vw,54px);border:1px solid var(--line);border-radius:34px;background:var(--paper);overflow:hidden;box-shadow:var(--shadow-sm)}
.business-card:hover{border-color:rgba(217,119,87,.46);box-shadow:var(--shadow-lg)}
.card-topline{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-bottom:44px;color:var(--faint);font-size:9px;font-weight:750;letter-spacing:.17em}
.card-topline.light{color:rgba(255,255,255,.55)}
.status{padding:6px 11px;border:1px solid currentColor;border-radius:999px;font-size:8px;letter-spacing:.1em}
.status-research{color:var(--success);background:rgba(51,124,88,.06)}
.status-building,.status-incubating{color:var(--brand-deep);background:rgba(217,119,87,.07)}
.status-core,.status-plan{color:var(--brand-light);background:rgba(217,119,87,.1)}
.card-kicker{margin-bottom:12px;color:var(--brand-deep);font-size:9px;font-weight:750;letter-spacing:.16em}
.card-topline.light~* .card-kicker,.lifeverse .card-kicker,.hardware-card .card-kicker{color:var(--brand-light)}
.business-card h3{font-size:clamp(36px,5vw,64px)}
.card-lead{margin-top:20px;color:var(--muted);font-size:15px;line-height:1.9}
.business-card-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(480px,1.15fr);gap:70px;align-items:center}
.risk-note{margin-top:30px;padding-left:15px;border-left:2px solid var(--brand);color:var(--faint);font-size:11px;line-height:1.7}
.project-matrix{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.project-item{position:relative;padding:24px 20px;border:1px solid var(--line);border-radius:18px;background:#fff;transition:transform .35s var(--ease-out),border-color .35s,box-shadow .35s}
.project-item:hover{transform:translateY(-5px);border-color:rgba(217,119,87,.55);box-shadow:var(--shadow-md)}
.project-item span{float:right;color:var(--brand);font-size:9px;font-weight:750}
.project-item b{display:block;color:var(--ink);font-size:15px}
.project-item small{display:block;margin-top:6px;color:var(--faint);font-size:7px;font-weight:700;letter-spacing:.14em}
.card-signal{position:absolute;left:0;right:0;bottom:0;height:50px;display:flex;align-items:flex-end;gap:5px;padding:0 22px;opacity:.16}
.card-signal i{flex:1;height:12%;background:var(--brand);animation:signal 1.8s ease-in-out infinite alternate}
.card-signal i:nth-child(2){height:35%;animation-delay:-.3s}.card-signal i:nth-child(3){height:20%;animation-delay:-.7s}
.card-signal i:nth-child(4){height:58%;animation-delay:-1s}.card-signal i:nth-child(5){height:44%;animation-delay:-.4s}
.card-signal i:nth-child(6){height:74%;animation-delay:-1.2s}.card-signal i:nth-child(7){height:32%;animation-delay:-.8s}.card-signal i:nth-child(8){height:52%;animation-delay:-.2s}
@keyframes signal{to{height:82%}}

/* infrastructure */
.infra-card{background:#fff}
.infra-intro{display:grid;grid-template-columns:.8fr 1.2fr;gap:65px;align-items:end;margin-bottom:48px}
.infra-intro .card-lead{margin:0}
.capability-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.capability{min-height:150px;padding:22px;border:1px solid var(--line);border-radius:20px;background:var(--paper);overflow:hidden;transition:transform .35s,border-color .35s,box-shadow .35s}
.capability:hover{transform:translateY(-6px);border-color:rgba(217,119,87,.5);box-shadow:var(--shadow-md)}
.capability span{display:block;margin-bottom:32px;color:var(--brand);font-size:9px;font-weight:750}
.capability b{display:block;color:var(--ink);font:650 15px/1.25 var(--serif)}
.capability small{display:block;margin-top:7px;color:var(--faint);font-size:11px}

/* lifeverse */
.lifeverse{min-height:720px;color:#fff;background:var(--dark);border-color:var(--dark);box-shadow:0 50px 110px -58px rgba(23,21,19,.75)}
.lifeverse:hover{border-color:var(--dark)}
.lifeverse-bg{position:absolute;inset:0;overflow:hidden}
.lifeverse-bg::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 72% 48%,rgba(217,119,87,.2),transparent 35%),linear-gradient(125deg,transparent 45%,rgba(255,255,255,.025))}
.memory-ring{position:absolute;left:71%;top:48%;border:1px solid rgba(217,119,87,.18);border-radius:50%;transform:translate(-50%,-50%);animation:memoryPulse 5s ease-out infinite}
.mr-1{width:300px;height:300px}.mr-2{width:470px;height:470px;animation-delay:-1.7s}.mr-3{width:640px;height:640px;animation-delay:-3.4s}
.lifeverse-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,.88fr) minmax(430px,1.12fr);gap:60px;align-items:center}
.lifeverse h3{color:#fff;font-family:var(--serif);font-size:clamp(52px,6.3vw,86px);font-weight:550}
.lifeverse h3 em{color:var(--brand-light);font-style:italic}
.lifeverse .card-lead{color:rgba(255,255,255,.62)}
.character-row{display:flex;gap:12px;margin-top:38px}
.character-row span{display:flex;align-items:center;gap:9px;padding:8px 14px 8px 8px;border:1px solid rgba(255,255,255,.12);border-radius:999px;background:rgba(255,255,255,.035);transition:background .3s,transform .3s}
.character-row span:hover{background:rgba(217,119,87,.16);transform:translateY(-3px)}
.character-row i{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--brand);font:700 10px/1 var(--serif)}
.character-row b{font-size:11px}
.lifeverse-visual{position:relative;min-height:460px}
.life-core{position:absolute;left:50%;top:50%;width:190px;height:190px;transform:translate(-50%,-50%);display:grid;place-items:center;align-content:center;border-radius:50%;background:radial-gradient(circle at 35% 28%,#f2af93,var(--brand) 48%,var(--brand-deep));box-shadow:0 0 80px rgba(217,119,87,.33);animation:lifeFloat 4.8s ease-in-out infinite}
.life-core::before,.life-core::after{content:"";position:absolute;border:1px solid rgba(255,255,255,.16);border-radius:50%;animation:lifeOrbit 9s linear infinite}
.life-core::before{inset:-40px}.life-core::after{inset:-95px;animation-direction:reverse;animation-duration:15s}
.life-face{position:relative;width:64px;height:48px;margin-bottom:11px}
.life-face span{position:absolute;top:15px;width:8px;height:8px;border-radius:50%;background:#fff;box-shadow:0 0 18px #fff;animation:blink 4s infinite}
.life-face span:first-child{left:12px}.life-face span:nth-child(2){right:12px}
.life-face i{position:absolute;left:50%;bottom:7px;width:18px;height:8px;border-bottom:2px solid rgba(255,255,255,.8);border-radius:50%;transform:translateX(-50%)}
.life-core b{color:#fff;text-align:center;font:650 13px/1.1 var(--serif);letter-spacing:.1em}
.life-node{position:absolute;padding:8px 12px;border:1px solid rgba(255,255,255,.13);border-radius:999px;background:rgba(28,25,23,.76);backdrop-filter:blur(8px);color:rgba(255,255,255,.72);font-size:7px;font-weight:750;letter-spacing:.13em;animation:nodeFloat 4s ease-in-out infinite}
.ln-1{left:3%;top:17%}.ln-2{right:3%;top:18%;animation-delay:-1s}.ln-3{right:-1%;top:50%;animation-delay:-2s}
.ln-4{right:10%;bottom:10%;animation-delay:-3s}.ln-5{left:10%;bottom:9%;animation-delay:-1.5s}.ln-6{left:-1%;top:51%;animation-delay:-2.5s}
.life-capabilities{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:9px;margin-top:50px;padding-top:30px;border-top:1px solid rgba(255,255,255,.09)}
.life-capabilities span{padding:8px 12px;border:1px solid rgba(255,255,255,.1);border-radius:999px;color:rgba(255,255,255,.58);font-size:9px;transition:color .3s,border-color .3s,background .3s}
.life-capabilities span:hover{color:#fff;border-color:rgba(217,119,87,.5);background:rgba(217,119,87,.1)}
@keyframes memoryPulse{50%{opacity:.35;transform:translate(-50%,-50%) scale(1.08)}}
@keyframes lifeFloat{50%{transform:translate(-50%,-54%)}}
@keyframes lifeOrbit{to{transform:rotate(360deg)}}
@keyframes blink{0%,45%,49%,100%{transform:scaleY(1)}47%{transform:scaleY(.08)}}

/* studio + media */
.business-pair{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.business-pair .business-card{min-height:650px}
.studio-card{background:linear-gradient(145deg,#fbf6f2,#f5e7df)}
.studio-card .card-lead,.media-card .card-lead{max-width:520px}
.tool-cloud{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:9px;margin-top:36px}
.tool-cloud span,.media-tags span{padding:8px 12px;border:1px solid rgba(185,85,55,.2);border-radius:999px;background:rgba(255,255,255,.56);color:var(--brand-dark);font-size:10px}
.studio-orb{position:absolute;right:-110px;bottom:-130px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle at 35% 28%,rgba(255,255,255,.9),rgba(217,119,87,.5) 35%,rgba(185,85,55,.88));box-shadow:0 0 60px rgba(217,119,87,.3);animation:studioFloat 7s ease-in-out infinite}
.studio-orb i{position:absolute;inset:-25px;border:1px solid rgba(185,85,55,.16);border-radius:50%;animation:lifeOrbit 13s linear infinite}
.studio-orb i:nth-child(2){inset:-55px;animation-direction:reverse}.studio-orb i:nth-child(3){inset:-90px}
.media-card{background:#fff}
.media-feature{margin-top:36px;padding:25px;border:1px solid var(--line);border-radius:22px;background:var(--paper);transition:border-color .3s,transform .3s}
.media-feature:hover{border-color:rgba(217,119,87,.5);transform:translateY(-4px)}
.media-feature span{display:block;color:var(--faint);font-size:9px}
.media-feature b{display:block;margin-top:7px;color:var(--ink);font-family:var(--serif);font-size:27px}
.media-feature small{display:block;margin-top:2px;color:var(--brand);font-size:8px;font-weight:750;letter-spacing:.15em}
.media-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
@keyframes studioFloat{50%{transform:translate(-12px,-18px) rotate(8deg)}}

/* hardware */
.hardware-card{min-height:520px;color:#fff;background:linear-gradient(125deg,#25201d,#171513);border-color:var(--dark);display:grid;grid-template-columns:.84fr 1.16fr;gap:70px;align-items:center}
.hardware-card:hover{border-color:var(--dark)}
.hardware-card::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(217,119,87,.04),transparent);transform:translateX(-100%);animation:hardwareSweep 5s ease-in-out infinite}
.hardware-card h3{color:#fff;max-width:540px}
.hardware-card .card-lead{color:rgba(255,255,255,.58)}
.hardware-track{position:relative;z-index:2;display:grid;gap:9px}
.hardware-track>span{display:flex;align-items:center;gap:14px;padding:16px 19px;border:1px solid rgba(255,255,255,.09);border-radius:14px;background:rgba(255,255,255,.03);transition:background .3s,border-color .3s,transform .3s}
.hardware-track>span:hover{background:rgba(217,119,87,.11);border-color:rgba(217,119,87,.36);transform:translateX(-7px)}
.hardware-track i{color:var(--brand-light);font:700 8px/1 var(--sans)}
.hardware-track b{font:600 13px/1 var(--serif);letter-spacing:.02em}
.hardware-scan{position:absolute;right:-130px;top:-160px;width:580px;height:580px;border-radius:50%;background:repeating-radial-gradient(circle,transparent 0 42px,rgba(217,119,87,.095) 43px 44px);animation:slowSpin 32s linear infinite}
@keyframes hardwareSweep{50%,100%{transform:translateX(100%)}}

/* ============ VISION ============ */
.vision{min-height:820px;display:grid;place-items:center;overflow:hidden;background:var(--dark);color:#fff}
.vision::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 50%,rgba(217,119,87,.18),transparent 35%)}
.vision-inner{position:relative;z-index:2;text-align:center;display:flex;align-items:center;flex-direction:column}
.vision h2{color:#fff;font-family:var(--serif);font-size:clamp(65px,10vw,138px);font-weight:520;line-height:.88}
.vision h2 em{color:var(--brand-light);font-style:italic}
.vision-main{margin:44px auto 0;max-width:720px;color:rgba(255,255,255,.76);font-size:clamp(17px,2vw,23px);line-height:1.75}
.vision-sub{margin:14px auto 34px;max-width:720px;color:rgba(255,255,255,.43);font-size:13px;line-height:1.8}
.vision-orbit{position:absolute;left:50%;top:50%;width:min(86vw,940px);aspect-ratio:1;transform:translate(-50%,-50%)}
.vision-orbit span{position:absolute;inset:0;border:1px solid rgba(217,119,87,.12);border-radius:50%;animation:visionPulse 7s ease-in-out infinite}
.vision-orbit span:nth-child(2){inset:12%;animation-delay:-2.3s}.vision-orbit span:nth-child(3){inset:24%;animation-delay:-4.6s}
@keyframes visionPulse{50%{opacity:.25;transform:scale(1.08)}}

/* ============ FOOTER ============ */
.footer{padding:78px 0 0;background:var(--paper);border-top:1px solid var(--line)}
.footer-main{display:grid;grid-template-columns:.92fr 1.08fr;gap:70px;padding-bottom:60px}
.footer-brand{display:flex;gap:16px;align-items:flex-start}
.footer-brand b{display:block;color:var(--ink);font-size:18px}
.footer-brand span:not(.brand-mark){display:block;margin-top:3px;color:var(--faint);font-size:8px;font-weight:700;letter-spacing:.14em}
.footer-brand p{margin-top:13px;color:var(--muted);font-size:13px}
.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.footer-links h3{margin-bottom:17px;color:var(--faint);font-size:10px;font-weight:650;letter-spacing:.09em}
.footer-links a,.footer-links p{display:block;margin-top:10px;color:var(--muted);font-size:12px;transition:color .25s}
.footer-links a:hover{color:var(--brand-deep)}
.footer-base{display:flex;justify-content:space-between;gap:25px;padding-top:24px;padding-bottom:30px;border-top:1px solid var(--line);color:var(--faint);font-size:10px}
.footer-base span:last-child{max-width:520px;text-align:right}

/* ============ RESPONSIVE ============ */
@media(max-width:1100px){
  :root{--wrap:1040px}
  .nav-links{gap:20px}
  .hero-inner{grid-template-columns:minmax(0,1.08fr) minmax(370px,.92fr);gap:25px}
  .hero-system{transform:scale(.9)}
  .business-card-grid{grid-template-columns:1fr 1.1fr;gap:40px}
  .lifeverse-grid{grid-template-columns:1fr 1fr;gap:30px}
  .business-pair .business-card{min-height:700px}
}

@media(max-width:900px){
  :root{--nav-h:68px}
  .wrap,.nav-inner{padding-inline:22px}
  .nav-links{
    position:fixed;z-index:-1;top:0;left:0;right:0;display:flex;align-items:stretch;flex-direction:column;gap:0;
    padding:calc(var(--nav-h) + 25px) 22px 30px;background:rgba(251,250,248,.98);
    border-bottom:1px solid var(--line);box-shadow:var(--shadow-md);backdrop-filter:blur(20px);
    transform:translateY(-110%);visibility:hidden;transition:transform .45s var(--ease-out),visibility .45s;
  }
  .nav-links.open{transform:none;visibility:visible}
  .nav-links a{padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}
  .nav-links a::after{display:none}
  .nav-burger{display:flex}
  .nav-burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-burger.open span:nth-child(2){opacity:0}
  .nav-burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .hero{padding-top:calc(var(--nav-h) + 64px);min-height:auto}
  .hero-inner{grid-template-columns:1fr}
  .hero-system{width:min(100%,500px);margin-top:24px;transform:none}
  .hero-title{font-size:clamp(43px,9.3vw,74px)}
  .hero-entry-grid{max-width:none}
  .hero-scroll{display:none}
  .section{padding:100px 0}
  .statement-grid{grid-template-columns:1fr;gap:22px}
  .sec-head{grid-template-columns:1fr;gap:25px}
  .flywheel-layout{grid-template-columns:1fr;gap:45px}
  .flywheel-sticky{position:relative;top:auto}
  .flywheel-visual{width:min(92vw,520px)}
  .flywheel-steps{padding-top:0}
  .flywheel-step{min-height:0}
  .business-card-grid,.infra-intro,.lifeverse-grid,.hardware-card{grid-template-columns:1fr}
  .business-card-grid{gap:40px}
  .capability-grid{grid-template-columns:1fr 1fr}
  .lifeverse{min-height:0}
  .lifeverse-visual{min-height:430px}
  .business-pair{grid-template-columns:1fr}
  .business-pair .business-card{min-height:600px}
  .hardware-card{gap:45px}
  .footer-main{grid-template-columns:1fr}
  .footer-links{grid-template-columns:repeat(4,1fr)}
  .pointer-aura{display:none}
}

@media(max-width:620px){
  .wrap,.nav-inner{padding-inline:17px}
  .hero-copy{min-width:0}
  .brand-word b{font-size:15px}
  .brand-word i{font-size:6px}
  .hero{padding-bottom:70px}
  .hero-title{font-size:clamp(39px,11.4vw,60px)}
  .title-cn{margin-top:12px;font-size:.55em}
  .hero-lead{font-size:15px}
  .hero-actions .btn{flex:1}
  .hero-entry-grid{grid-template-columns:1fr}
  .hero-entry{display:grid;grid-template-columns:30px 1fr;align-items:center}
  .hero-entry>span{grid-row:1/3;margin:0}
  .hero-entry b,.hero-entry small{grid-column:2}
  .hero-system{width:min(100%,430px);max-width:100%;margin-inline:auto}
  .system-node{min-width:86px;padding:7px 9px}
  .system-node b{font-size:8px}.system-node span{font-size:5px}
  .system-core{width:125px;height:125px}.system-core img{width:45px;height:45px}
  .statement-detail{grid-template-columns:1fr;gap:18px}
  .sec-head h2{font-size:clamp(32px,10vw,46px)}
  .flywheel-visual{width:100%}
  .wheel-core{width:128px;height:128px}
  .wheel-core img{width:42px;height:42px}
  .wheel-core>span{top:14px}
  .wheel-node{padding:7px 8px}.wheel-node b{font-size:7px}.wheel-node i{display:none}
  .wn-2,.wn-3{right:-3%}.wn-5,.wn-6{left:-3%}
  .flywheel-step{grid-template-columns:42px 1fr;padding:32px 8px}
  .flywheel-step.active{transform:none}
  .business-card{padding:28px 20px;border-radius:25px}
  .card-topline{align-items:flex-start;margin-bottom:34px}
  .business-card h3{font-size:clamp(36px,12vw,54px)}
  .project-matrix,.capability-grid{grid-template-columns:1fr}
  .project-item{padding:19px}
  .lifeverse h3{font-size:clamp(50px,15vw,72px)}
  .character-row{flex-wrap:wrap}
  .lifeverse-visual{min-height:360px}
  .life-core{width:150px;height:150px}
  .life-node{font-size:6px}
  .business-pair .business-card{min-height:610px}
  .hardware-track>span:hover{transform:none}
  .vision{min-height:720px}
  .vision h2{font-size:clamp(58px,20vw,92px)}
  .footer-links{grid-template-columns:1fr 1fr;row-gap:36px}
  .footer-base{flex-direction:column}
  .footer-base span:last-child{text-align:left}
}

@media(hover:none),(pointer:coarse){
  .pointer-aura{display:none}
  .spotlight-card::before{display:none}
  .tilt-card{transform:none!important}
}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .js .reveal,.js .reveal.tilt-card,.js .reveal.in.tilt-card,.hero-enter{opacity:1;transform:none}
  .title-line>span{transform:none}
  .site-intro{display:none}
  .pointer-aura{display:none}
  .flywheel-step{opacity:1}
}