@font-face{font-family:"Chiron Site";src:url("assets/fonts/ChironHeiHK-Light-ext.woff2") format("woff2");font-weight:300;font-display:swap;unicode-range:U+3400-4DBF,U+4E00-9FFF;}
@font-face{font-family:"Chiron Site";src:url("assets/fonts/ChironHeiHK-Light-core.woff2") format("woff2");font-weight:300;font-display:swap;}
@font-face{font-family:"Chiron Site";src:url("assets/fonts/ChironHeiHK-Medium-ext.woff2") format("woff2");font-weight:500 900;font-display:swap;unicode-range:U+3400-4DBF,U+4E00-9FFF;}
@font-face{font-family:"Chiron Site";src:url("assets/fonts/ChironHeiHK-Medium-core.woff2") format("woff2");font-weight:500 900;font-display:swap;}

:root{
  --ground:#171716;
  --raised:#22211f;
  --line-dark:rgba(241,239,232,.12);
  --paper:#f1efe8;
  --paper-2:#e7e3d6;
  --ink:#1f1c18;
  --ink-2:#3a352e;
  --body-ink:#5c564c;
  --on-dark:#f1efe8;
  --muted-dark:#9c968a;
  --orange:#dc580e;
  --orange-deep:#b8460a;
  --orange-light:#e87836;
  /* 首页三处光（石英补光、白板照亮圈、数字卡悬停光）共用一种暖橙和一个半径 */
  --glow-rgb:232,120,54;
  --glow-r:max(20vw,20vh);
  --display:"Chiron Site","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --text:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;
  --gutter:clamp(16px,4vw,56px);
  --ease:cubic-bezier(.2,.7,.1,1);
  --ease-io:cubic-bezier(.7,0,.2,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--ground);color:var(--on-dark);font-family:var(--text);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
body.is-loading{overflow:hidden}
img{display:block;max-width:100%;-webkit-user-drag:none;user-drag:none}
.nw{white-space:nowrap}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
h1,h2,h3{font-family:var(--display);font-weight:500;margin:0;letter-spacing:-.01em;line-height:1.12}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--orange-light);outline-offset:3px;border-radius:4px}
::selection{background:var(--orange);color:#fffdf7}

/* ---------- loader ---------- */
.loader{position:fixed;inset:0;z-index:100;background:var(--ground);display:grid;place-items:center;align-content:center;gap:28px;transition:clip-path 1s var(--ease-io);clip-path:inset(0 0 0 0)}
.loader-mark{width:44px;height:auto;animation:breathe 1.6s ease-in-out infinite}
.loader-count{font-family:var(--display);font-weight:300;font-size:clamp(64px,12vw,140px);line-height:1;font-variant-numeric:tabular-nums;color:var(--on-dark);min-width:3ch;text-align:center}
.loader-bar{width:min(240px,60vw);height:2px;background:var(--line-dark);overflow:hidden}
.loader-bar i{display:block;height:100%;width:100%;background:var(--orange);transform-origin:left;transform:scaleX(0)}
body.is-ready .loader{clip-path:inset(0 0 100% 0)}
body.is-done .loader{display:none}
@keyframes breathe{50%{opacity:.4;transform:translateY(-4px)}}

/* ---------- cursor ---------- */
.cursor{position:fixed;left:0;top:0;z-index:90;pointer-events:none;display:none;mix-blend-mode:difference;transition:opacity .25s}
.cursor span{position:absolute;left:-18px;top:-18px;width:36px;height:36px;border-radius:50%;border:1px solid rgba(241,239,232,.55);transition:transform .35s var(--ease),background-color .35s,border-color .35s}
/* 悬停只放大成空心圈，不盖住文字；按钮和输入框上直接隐藏 */
.cursor.is-hover span{transform:scale(1.6);border-color:rgba(241,239,232,.9)}
.cursor.is-off{opacity:0}
.cursor.is-drag span{transform:scale(2.4);border-color:var(--orange-light)}
@media (pointer:fine){.cursor{display:block}}

/* ---------- nav ---------- */
.nav{position:fixed;inset:0 0 auto;z-index:50;display:flex;align-items:center;gap:32px;padding:18px var(--gutter);transition:background-color .4s,backdrop-filter .4s,transform .5s var(--ease)}
.nav.is-solid{background:rgba(23,23,22,.72);backdrop-filter:blur(14px) saturate(1.2);-webkit-backdrop-filter:blur(14px) saturate(1.2)}
.nav.is-hidden{transform:translateY(-100%)}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:500;font-size:17px;letter-spacing:.04em}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto;font-size:14px;color:var(--muted-dark)}
.nav-drop{position:relative}
.nav-links > a,.nav-drop > a{position:relative;padding:4px 0;transition:color .3s}
.nav-links > a::after,.nav-drop > a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--orange-light);transform:scaleX(0);transform-origin:right;transition:transform .4s var(--ease)}
.nav-links > a:hover,.nav-links > a.is-active,.nav-drop > a:hover,.nav-drop > a.is-active{color:var(--on-dark)}
.nav-links > a:hover::after,.nav-links > a.is-active::after,.nav-drop > a:hover::after,.nav-drop > a.is-active::after{transform:scaleX(1);transform-origin:left}
.nav-links > a.is-active::after,.nav-drop > a.is-active::after{height:2px;background:var(--orange)}
.nav-menu{position:absolute;top:calc(100% + 10px);left:50%;z-index:5;display:grid;min-width:168px;padding:8px;border:1px solid var(--line-dark);border-radius:12px;background:rgba(23,23,22,.94);opacity:0;visibility:hidden;transform:translate(-50%,6px);transition:opacity .2s,transform .2s,visibility .2s}
.nav-drop:hover .nav-menu,.nav-drop:focus-within .nav-menu{opacity:1;visibility:visible;transform:translate(-50%,0)}
.nav-menu a{padding:8px 12px;border-radius:8px;color:var(--on-dark);white-space:nowrap}
.nav-menu a:hover{background:rgba(241,239,232,.08)}
.sheet a.is-active{color:var(--orange-light)}
/* 内页面包屑：挂在导航下沿，跟导航一起收起 */
.crumbs{position:absolute;left:0;right:0;top:100%;display:flex;align-items:center;gap:8px;height:32px;padding:0 var(--gutter);font-size:13px;color:var(--muted-dark);white-space:nowrap;pointer-events:none;transition:background-color .4s,opacity .3s}
.crumbs a{pointer-events:auto;padding:4px 0;transition:color .3s}
.crumbs a:hover{color:var(--on-dark)}
.crumbs i{font-style:normal;opacity:.5}
.crumb-tail{display:inline-flex;gap:8px}
.crumb-tail[hidden]{display:none}
.crumbs b{font-weight:400;color:var(--on-dark)}
.nav.is-solid .crumbs{background:rgba(23,23,22,.72);backdrop-filter:blur(14px) saturate(1.2);-webkit-backdrop-filter:blur(14px) saturate(1.2)}
.nav.is-hidden .crumbs{opacity:0}
.nav-cta{font-size:14px;padding:9px 18px;border-radius:999px;border:1px solid var(--line-dark);transition:background-color .3s,border-color .3s,color .3s}
.nav-cta:hover{background:var(--on-dark);color:var(--ink);border-color:var(--on-dark)}
.nav-burger{display:none;width:40px;height:40px;margin-left:auto;position:relative}
.nav-burger i{position:absolute;left:10px;right:10px;height:1.5px;background:var(--on-dark);transition:transform .4s var(--ease)}
.nav-burger i:first-child{top:16px}.nav-burger i:last-child{top:23px}
.nav-burger[aria-expanded="true"] i:first-child{transform:translateY(3.5px) rotate(45deg)}
.nav-burger[aria-expanded="true"] i:last-child{transform:translateY(-3.5px) rotate(-45deg)}
.sheet{position:fixed;inset:0;z-index:45;background:var(--ground);display:flex;flex-direction:column;justify-content:center;gap:6px;padding:0 var(--gutter);clip-path:circle(0 at calc(100% - 36px) 38px);transition:clip-path .7s var(--ease-io);visibility:hidden}
.sheet.is-open{clip-path:circle(150% at calc(100% - 36px) 38px);visibility:visible}
.sheet a,.sheet button{font-family:var(--display);font-size:34px;text-align:left;padding:6px 0}
.sheet .sheet-sub{font-family:inherit;font-size:16px;padding:3px 0 3px 8px;color:var(--muted-dark)}
.sheet button{color:var(--orange-light);margin-top:16px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;height:52px;padding:0 28px;border-radius:999px;font-size:15px;font-weight:500;transition:background-color .3s,color .3s,border-color .3s;will-change:transform}
.btn-solid{background:var(--orange);color:#fffdf7}
.btn-solid:hover{background:var(--orange-light)}
.btn-ghost{border:1px solid var(--line-dark);color:var(--on-dark)}
.btn-ghost:hover{border-color:var(--on-dark)}
.btn-xl{height:68px;padding:0 44px;font-size:18px}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100svh;display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);align-items:center;padding:96px var(--gutter) 64px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 55% at 72% 50%,rgba(220,88,14,.16),transparent 70%);pointer-events:none}
.hero-stage{position:absolute;inset:0 0 0 38%;touch-action:pan-y;cursor:grab}
.hero-stage.is-dragging{cursor:grabbing}
.hero-stage canvas{display:block;width:100%!important;height:100%!important;opacity:0;transition:opacity 1.2s}
.hero-stage.has-gl canvas{opacity:1}
.hero-fallback{position:absolute;top:50%;left:50%;width:min(80%,640px);transform:translate(-50%,-50%);transition:opacity .8s}
.hero-stage.has-gl .hero-fallback{opacity:0}
.hero-copy{position:relative;z-index:2;max-width:820px;pointer-events:none}
.hero-copy a,.hero-copy button{pointer-events:auto}
.hero-title{font-size:clamp(36px,5.6vw,96px);font-weight:500;line-height:1.06;letter-spacing:-.02em}
.hero-sub{margin-top:28px;font-size:clamp(17px,1.5vw,21px);color:var(--muted-dark);max-width:30em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:40px}
/* 副标题和按钮等主标题开始出现之后再出来，避免老二先于老大 */
.hero-sub,.hero-actions,.phero-sub,.xhero-sub{opacity:0;transform:translateY(10px)}
.hero-title.is-in ~ .hero-sub,.phero h1.is-in ~ .phero-sub,.xhero h1.is-in ~ .xhero-sub{opacity:1;transform:none;transition:opacity .5s var(--ease) .55s,transform .5s var(--ease) .55s}
.hero-title.is-in ~ .hero-actions{opacity:1;transform:none;transition:opacity .5s var(--ease) .8s,transform .5s var(--ease) .8s}
.block-head h2[data-split] ~ p,.cta h2[data-split] ~ p{opacity:0;transform:translateY(8px)}
.block-head h2[data-split].is-in ~ p,.cta h2[data-split].is-in ~ p{opacity:1;transform:none;transition:opacity .45s var(--ease) .35s,transform .45s var(--ease) .35s}
.hero-hint{position:absolute;right:var(--gutter);bottom:40px;display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:13px;letter-spacing:.12em;line-height:1.6;color:var(--muted-dark);white-space:nowrap;z-index:2}
.hint-dot{width:8px;height:8px;border-radius:50%;background:var(--orange);box-shadow:0 0 0 0 rgba(220,88,14,.6);animation:ping 2s infinite}
@keyframes ping{70%{box-shadow:0 0 0 10px rgba(220,88,14,0)}100%{box-shadow:0 0 0 0 rgba(220,88,14,0)}}
.hero-scroll{position:absolute;left:50%;bottom:28px;width:22px;height:36px;border:1px solid var(--line-dark);border-radius:12px;transform:translateX(-50%);z-index:2}
.hero-scroll span{position:absolute;left:50%;top:7px;width:2px;height:7px;margin-left:-1px;background:var(--on-dark);border-radius:2px;animation:wheel 1.8s var(--ease) infinite}
@keyframes wheel{0%{opacity:0;transform:translateY(-3px)}30%{opacity:1}100%{opacity:0;transform:translateY(12px)}}

/* split-text reveal */
[data-split] .ch{display:inline-block;opacity:0;filter:blur(6px);transform:translateY(.2em);transition:opacity .45s var(--ease),filter .45s var(--ease),transform .45s var(--ease);transition-delay:calc(var(--i) * 16ms)}
[data-split].is-in .ch{opacity:1;filter:blur(0);transform:none}

/* ---------- section head ---------- */
.section-head{padding:0 var(--gutter);margin-bottom:48px}
.section-head h2,.results h2,.field-head h2,.board h2,.cta h2{font-size:clamp(34px,4.6vw,72px)}

/* ---------- what / accordion ---------- */
.what{padding:88px 0 72px}
.steps{display:flex;gap:10px;height:min(78vh,720px);padding:0 var(--gutter)}
.step{position:relative;flex:1;min-width:0;border-radius:18px;overflow:hidden;cursor:pointer;transition:flex .8s var(--ease-io);outline-offset:4px;isolation:isolate}
.step.is-open{flex:4.2}
.step img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transform:scale(1.12);filter:sepia(.18) saturate(.9) brightness(.6);transition:transform 1.2s var(--ease),filter .8s}
.step.is-open img{transform:scale(1);filter:none}
.step-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(23,23,22,.15) 30%,rgba(23,23,22,.85))}
.step-no{position:absolute;top:22px;left:24px;font-family:var(--display);font-weight:300;font-size:15px;color:rgba(232,120,54,.72);transition:color .5s}
.step.is-open .step-no{color:var(--orange-light)}
.step-word{position:absolute;left:24px;bottom:24px;font-size:clamp(28px,3vw,52px);writing-mode:vertical-rl;letter-spacing:.12em;transition:transform .8s var(--ease-io)}
.step.is-open .step-word{writing-mode:horizontal-tb;letter-spacing:0;bottom:auto;top:clamp(56px,8vh,90px);font-size:clamp(44px,5.4vw,92px)}
.step-body{position:absolute;left:24px;right:24px;bottom:28px;opacity:0;transform:translateY(16px);transition:opacity .5s,transform .6s var(--ease);pointer-events:none}
.step.is-open .step-body{opacity:1;transform:none;transition-delay:.35s}
.step-body p{font-size:clamp(16px,1.35vw,21px);line-height:1.55;max-width:24em;text-wrap:pretty}
.step-body ul{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.step-body li{font-size:13px;white-space:nowrap;padding:6px 14px;border-radius:999px;border:1px solid rgba(232,120,54,.5);background:rgba(232,120,54,.16);color:#f4a878;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}

/* ---------- field / horizontal gallery ---------- */
.field{position:relative;background:var(--paper);color:var(--ink)}
.field-pin{position:sticky;top:0;height:100vh;overflow:hidden;display:flex;flex-direction:column;justify-content:center;gap:clamp(24px,5vh,56px)}
.field-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding:0 var(--gutter)}
.field-head p{color:var(--body-ink);max-width:18em;text-align:right}
.field-track{display:flex;align-items:center;gap:20px;padding:0 var(--gutter);will-change:transform;width:max-content}
/* 照片统一尺寸，说明常驻在图下面 */
.shot{position:relative;margin:0;flex:none;width:min(46vh,420px);border-radius:14px;overflow:hidden;background:var(--paper-2);isolation:isolate}
.shot img{display:block;width:100%;aspect-ratio:1;object-fit:cover;object-position:50% 40%}
.shot img.shot-note{object-fit:contain;object-position:center;background:#f4f1e8}
.step img.step-note{object-fit:contain;object-position:center;background:#f6f3ea}
.shot-hud{position:absolute;z-index:1;left:12px;top:12px;padding:5px 10px;border:1px solid rgba(241,239,232,.18);border-radius:4px;background:rgba(12,13,12,.55);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);font-family:var(--mono);font-size:13px;letter-spacing:.1em;line-height:1.4;color:#f1efe8;white-space:nowrap}
.field-progress{margin:0 var(--gutter);width:min(220px,30vw);height:1px;background:rgba(31,28,24,.14)}
.field-progress i{display:block;height:100%;background:var(--orange);transform-origin:left;transform:scaleX(0)}

/* ---------- 企业 AI 原生化成熟度框架原图 ---------- */
.model{padding:72px 0 56px}
.model-layout{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:16px;padding:0 var(--gutter);align-items:start}
.model-sheet{margin:0;padding:10px;border-radius:16px;background:#141413;border:1px solid var(--line-dark);overflow:auto}
.model-sheet img{display:block;width:100%;height:auto}
.model-eval{display:flex;flex-direction:column;align-items:flex-start;gap:12px;padding:28px;border-radius:18px;background:var(--orange);color:#fffdf7}
.model-eval .eyebrow{color:rgba(255,253,247,.8)}
.model-eval .eyebrow::before{background:#fffdf7}
.model-eval strong{font-family:var(--display);font-size:clamp(26px,2vw,34px);font-weight:500;line-height:1.15}
.model-eval p{font-size:15px;line-height:1.6;color:rgba(255,253,247,.88)}
.model-eval .link-arrow{color:#fffdf7;margin-top:auto}

/* ---------- results ---------- */
.results{padding:72px 0 56px}
.result-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;padding:0 var(--gutter)}
.result-card{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:10px;min-height:420px;padding:22px;border-radius:18px;overflow:hidden;background:#141413;color:var(--on-dark)}
.result-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 30%}
.result-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,20,19,.05) 20%,rgba(20,20,19,.88))}
.result-card span,.result-card strong,.result-card em{position:relative;z-index:1}
.result-card span{margin-top:auto;font-size:13px;letter-spacing:.14em;color:var(--orange-light)}
.result-card strong{font-family:var(--display);font-size:clamp(26px,2.2vw,36px);font-weight:500;line-height:1.25}
.result-card em{font-style:normal}
.results-sub{margin-top:18px;color:var(--muted-dark)}
.figures{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;max-width:1040px;margin:72px auto 0}
.figure{position:relative;display:flex;flex-direction:column;align-items:center;gap:12px;padding:56px 28px 44px;border-radius:22px;background:var(--raised);overflow:hidden;transition:transform .5s var(--ease)}
.figure::before{content:"";position:absolute;inset:0;background:radial-gradient(circle var(--glow-r) at var(--mx,50%) var(--my,50%),rgba(var(--glow-rgb),.26),rgba(var(--glow-rgb),.1) 55%,transparent 100%);opacity:0;transition:opacity .4s}
.figure:hover::before{opacity:1}
.figure strong{position:relative;font-family:var(--display);font-weight:300;font-size:clamp(52px,5.4vw,88px);line-height:1;letter-spacing:-.01em;font-variant-numeric:tabular-nums;white-space:nowrap}
.figure strong small{font-size:.36em;letter-spacing:.02em;margin-left:.12em}
.figure>span{position:relative;font-size:16px;line-height:1.5;letter-spacing:.02em;color:var(--muted-dark)}
.figure em{position:relative;margin-top:22px;font-style:normal;font-size:13px;color:var(--orange-light);opacity:.0;transform:translateY(6px);transition:opacity .4s,transform .4s var(--ease)}
.figure:hover em,.figure:focus-visible em{opacity:1;transform:none}

/* ---------- board spotlight ---------- */
.board{position:relative;height:100vh;min-height:560px;overflow:hidden;background:#0d0d0c;--top:clamp(120px,18vh,180px)}
.board-img{position:absolute;inset:var(--top) 0 0;background:var(--img) 50% 42%/138% auto no-repeat;filter:brightness(1.05) contrast(1.05);-webkit-mask-image:radial-gradient(circle var(--r,0px) at var(--x,50%) var(--y,50%),#000 55%,transparent 100%);mask-image:radial-gradient(circle var(--r,0px) at var(--x,50%) var(--y,50%),#000 55%,transparent 100%)}
.board::before{content:"";position:absolute;inset:var(--top) 0 0;background:var(--img) 50% 42%/138% auto no-repeat;opacity:.07;filter:grayscale(1)}
.board::after{content:"";position:absolute;inset:auto 0 0;height:26%;background:linear-gradient(rgba(23,23,22,0),var(--ground));pointer-events:none;z-index:1}
.board-copy{position:absolute;left:var(--gutter);right:var(--gutter);top:clamp(72px,11vh,110px);z-index:2;display:flex;align-items:baseline;justify-content:space-between;gap:24px;pointer-events:none}
.board-copy h2{font-size:clamp(30px,3.4vw,52px)}
.board-img::after{content:"";position:absolute;inset:0;background:radial-gradient(circle var(--r,0px) at var(--x,50%) var(--y,50%),rgba(var(--glow-rgb),.26),rgba(var(--glow-rgb),.1) 55%,transparent 100%);mix-blend-mode:screen;pointer-events:none}
.board-img::before{content:"";position:absolute;inset:0 0 auto;height:22%;background:linear-gradient(#0d0d0c,rgba(13,13,12,0))}
.board-tip{flex:none;font-size:14px;color:var(--muted-dark)}
@media (pointer:coarse){.board{cursor:auto}}

/* ---------- products ---------- */
.products{padding:88px 0 72px}
.product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;padding:0 var(--gutter)}
.product{position:relative;min-height:440px;padding:36px;border-radius:22px;background:var(--raised);overflow:hidden;transform-style:preserve-3d;transition:transform .6s var(--ease);will-change:transform}
.product:hover{transition:transform .15s linear}
a.product{display:block}
.product .product-go{position:relative;z-index:1;margin-top:28px}
.product:hover .product-go{background-size:100% 1px}
.product:hover .product-go::after{transform:translateX(4px)}
.product .tag{display:inline-block;font-size:13px;padding:5px 12px;border-radius:999px;border:1px solid rgba(232,120,54,.45);color:var(--orange-light)}
.product h3{margin-top:28px;font-size:clamp(40px,4.4vw,68px);font-weight:500;letter-spacing:-.02em}
.product p{margin-top:12px;color:var(--muted-dark);max-width:11em;font-size:17px}
.product .tag,.product h3,.product p,.product .product-go{position:relative;z-index:2;max-width:48%}
.product-art{position:absolute;right:20px;bottom:24px;width:44%;aspect-ratio:1.35;pointer-events:none;transform:translateZ(40px)}
.art-graph i{position:absolute;width:12px;height:12px;border-radius:50%;background:var(--on-dark);opacity:.7;transition:transform .8s var(--ease),background-color .5s}
.art-graph i:nth-child(1){left:10%;top:60%}.art-graph i:nth-child(2){left:32%;top:24%}.art-graph i:nth-child(3){left:50%;top:62%;width:22px;height:22px;background:var(--orange);opacity:1}
.art-graph i:nth-child(4){left:72%;top:18%}.art-graph i:nth-child(5){left:86%;top:56%}.art-graph i:nth-child(6){left:62%;top:90%}.art-graph i:nth-child(7){left:24%;top:88%}
.art-graph::before{content:"";position:absolute;left:16%;top:30%;width:44%;height:38%;border:1px solid rgba(241,239,232,.16);border-radius:50%;transform:rotate(-14deg);transition:transform .9s var(--ease)}
.art-graph::after{content:"";position:absolute;left:38%;top:22%;width:50%;height:70%;border:1px solid rgba(241,239,232,.12);border-radius:50%;transform:rotate(24deg);transition:transform .9s var(--ease)}
.product:hover .art-graph::before{transform:rotate(-4deg) scale(1.08)}
.product:hover .art-graph::after{transform:rotate(36deg) scale(1.06)}
.product:hover .art-graph i:not(:nth-child(3)){transform:scale(1.4);background:var(--orange-light)}
.product:hover .art-graph i:nth-child(3){transform:scale(1.4)}
.art-stack i{position:absolute;left:8%;right:8%;height:20%;display:flex;align-items:center;gap:12px;padding:0 16px;border-radius:12px;border:1px solid rgba(241,239,232,.2);background:rgba(241,239,232,.04);font-style:normal;font-size:14px;color:var(--on-dark);transition:transform .7s var(--ease),border-color .5s}
.art-stack i b{font-family:var(--display);font-weight:400;font-size:12px;color:var(--muted-dark);min-width:1.6em}
.product-proof{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:clamp(20px,3vw,48px);margin:16px var(--gutter) 0;padding:28px 36px;border-radius:22px;border:1px solid rgba(241,239,232,.1);transition:border-color .4s}
.product-proof:hover{border-color:rgba(232,120,54,.5)}
.product-proof strong{font-family:var(--display);font-weight:300;font-size:clamp(44px,4.4vw,72px);line-height:1;font-variant-numeric:tabular-nums;white-space:nowrap}
.product-proof strong small{font-size:.36em;margin-left:.12em}
.product-proof>span{font-size:17px;line-height:1.5}
.product-proof>span small{display:block;margin-top:4px;font-size:13px;color:var(--muted-dark)}
.product-proof em{font-style:normal;font-size:14px;color:var(--orange-light)}
.art-stack i:nth-child(1){top:6%}.art-stack i:nth-child(2){top:28%}.art-stack i:nth-child(3){top:50%}
.art-stack i:nth-child(4){top:72%;border-color:var(--orange);background:rgba(220,88,14,.14)}
.product:hover .art-stack i:nth-child(1){transform:translateY(-14px) translateZ(30px)}
.product:hover .art-stack i:nth-child(2){transform:translateY(-6px) translateZ(20px)}
.product:hover .art-stack i:nth-child(3){transform:translateY(2px) translateZ(10px)}
.product:hover .art-stack i:nth-child(4){transform:translateY(10px)}

/* ---------- cta ---------- */
.cta{position:relative;padding:96px var(--gutter) 88px;text-align:center;overflow:hidden}
.cta::before{content:"";position:absolute;left:50%;top:60%;width:min(900px,120vw);aspect-ratio:1;transform:translate(-50%,-50%);background:radial-gradient(circle,rgba(220,88,14,.22),transparent 62%);pointer-events:none}
.cta h2{position:relative;font-size:clamp(40px,5.6vw,96px);line-height:1.15;letter-spacing:.01em}
.cta p{position:relative;margin:28px auto 52px;color:var(--muted-dark);max-width:24em;font-size:clamp(16px,1.3vw,19px);line-height:1.7;letter-spacing:.02em}


/* ---------- modal ---------- */
.modal{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:16px}
.modal[hidden]{display:none}
.modal-back{position:absolute;inset:0;background:rgba(10,10,9,.7);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);animation:fade .4s}
.modal-card{position:relative;width:min(380px,100%);padding:40px 32px 32px;border-radius:24px;background:var(--paper);color:var(--ink);text-align:center;animation:pop .55s var(--ease)}
.modal-card h3{font-size:28px}
.modal-card p{margin-top:8px;color:var(--body-ink);font-size:15px}
.modal-card img{margin:24px auto 0;border-radius:12px}
.modal-x{position:absolute;top:12px;right:14px;width:36px;height:36px;font-size:24px;line-height:1;color:var(--body-ink);border-radius:50%;transition:background-color .3s}
.modal-x:hover{background:var(--paper-2)}
.modal-proof{width:min(440px,100%);padding:20px 20px 24px}
.modal-proof img{margin:0;width:100%;max-height:72vh;object-fit:contain;border-radius:14px}
.modal-proof .modal-x{background:var(--paper);z-index:1}
@keyframes fade{from{opacity:0}}
@keyframes pop{from{opacity:0;transform:translateY(24px) scale(.96)}}

/* ---------- scroll reveal (only for a few blocks) ---------- */
.reveal-img{clip-path:inset(12% 12% 12% 12% round 18px);transition:clip-path 1.3s var(--ease-io)}
.reveal-img.is-in{clip-path:inset(0 0 0 0 round 18px)}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .nav-links,.nav-cta{display:none}
  .nav-burger{display:block}
  .hero{grid-template-columns:1fr;align-items:end;padding-bottom:96px}
  .hero-stage{inset:0 0 34% 0}
  .hero::before{background:radial-gradient(80% 45% at 50% 32%,rgba(220,88,14,.18),transparent 70%)}
  .hero-copy{max-width:none}
  .hero-title{font-size:clamp(34px,9.4vw,64px)}
  .hero-hint{bottom:auto;top:84px}
  .hero-scroll{display:none}
  .what{padding:100px 0 80px}
  .steps{flex-direction:column;height:auto}
  .step{flex:none;height:84px;transition:height .8s var(--ease-io)}
  .step.is-open{flex:none;height:min(72vh,560px)}
  .step-word,.step.is-open .step-word{writing-mode:horizontal-tb;letter-spacing:0}
  .step-word{bottom:auto;top:24px;left:72px;font-size:30px}
  .step.is-open .step-word{top:56px;left:24px;font-size:46px}
  .step-no{top:32px}
  /* 手机：每张卡右上角一个 +，提示可以点开；打开后转成 × */
  .step::after{content:"+";position:absolute;top:24px;right:20px;width:34px;height:34px;display:grid;place-items:center;border-radius:50%;border:1px solid rgba(241,239,232,.4);font-size:22px;font-weight:300;line-height:1;color:var(--on-dark);transition:transform .5s var(--ease)}
  .step.is-open::after{transform:rotate(45deg)}
  .step-body p{font-size:16px}
  .field-head{flex-direction:column;align-items:flex-start}
  .field-head p{text-align:left}
  /* 手机：现场改成原生左右滑，一张一屏 */
  .field{height:auto!important}
  .field-pin{position:relative;height:auto;padding:96px 0 72px;gap:28px}
  .field-track{width:auto;overflow-x:auto;scroll-snap-type:x mandatory;scroll-padding:0 var(--gutter);overscroll-behavior-x:contain;scrollbar-width:none;transform:none!important}
  .field-track::-webkit-scrollbar{display:none}
  .shot{width:78vw;scroll-snap-align:start}
  .model-layout,.result-grid,.figures,.product-grid{grid-template-columns:1fr}
  .product .tag,.product h3,.product p,.product .product-go{max-width:none}
  .product-art{position:relative;right:auto;bottom:auto;width:min(100%,320px);margin-top:28px}
  .figure em{opacity:1;transform:none}
  .product{min-height:0;padding:28px}
  .product-proof{grid-template-columns:1fr;gap:12px;padding:24px}
  .board{--top:clamp(170px,26vh,220px)}
  .board-copy{flex-direction:column;gap:10px}
  .results{padding:72px var(--gutter)}
  .products{padding:72px 0 56px}
  .cta{padding:72px var(--gutter)}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;transition-delay:0ms!important;scroll-behavior:auto!important}
  [data-split] .ch{opacity:1;filter:none;transform:none}
}

/* ================= 每页共用：平滑滚动 / 转场 / 光标标签 / 跟随图 / 大页脚 ================= */
html.is-smooth{scroll-behavior:auto}
html.lenis,html.lenis body{height:auto}
.lenis.lenis-stopped{overflow:hidden}

/* 门帘转场已按评审去掉 */
/* 跨页转场：导航不动，正文淡入并轻微上移；首页产品卡标题过渡到产品页大标题 */
@view-transition{navigation:auto}
.nav{view-transition-name:site-nav}
.product[href="/products/ontology"] h3,body[data-page="ontology"] #ph-title{view-transition-name:title-ontology}
.product[href="/products/antry"] h3,body[data-page="antry"] #ph-title{view-transition-name:title-antry}
::view-transition-group(site-nav){animation:none}
::view-transition-old(site-nav){display:none}
::view-transition-new(site-nav){animation:none}
::view-transition-old(root){animation:vt-out .2s ease both}
::view-transition-new(root){animation:vt-in .55s var(--ease) both}
::view-transition-group(title-ontology),::view-transition-group(title-antry){animation-duration:.6s;animation-timing-function:var(--ease)}
@keyframes vt-out{to{opacity:0}}
@keyframes vt-in{from{opacity:0;transform:translateY(18px)}}
.vt .xhero h1 .ch{transition:none;opacity:1;filter:none;transform:none}
@media (prefers-reduced-motion:reduce){@view-transition{navigation:none}}

/* 光标标签 */
.cursor::after{content:attr(data-label);position:absolute;left:0;top:0;padding:6px 12px;border-radius:999px;background:var(--orange);transform:translate(18px,18px) scale(.6);transform-origin:0 0;font-size:13px;font-weight:500;letter-spacing:.04em;color:#fffdf7;white-space:nowrap;opacity:0;transition:opacity .3s,transform .4s var(--ease)}
.cursor.has-label{mix-blend-mode:normal}
.cursor.has-label span{transform:scale(.5);background:var(--orange);border-color:transparent}
.cursor.has-label::after{opacity:1;transform:translate(18px,18px) scale(1)}

/* 鼠标划过列表时跟着走的照片 */
.float-img{position:fixed;left:0;top:0;z-index:30;pointer-events:none;width:clamp(220px,22vw,320px);aspect-ratio:4/3;margin:calc(clamp(220px,22vw,320px) * -.375) 0 0 calc(clamp(220px,22vw,320px) * -.5);opacity:0;scale:.7;transition:opacity .35s,scale .5s var(--ease)}
.nav:hover .float-img,.sheet:hover .float-img{opacity:0}
.float-img img{width:100%;height:100%;object-fit:cover;border-radius:14px;clip-path:inset(50% 50% round 14px);transition:clip-path .6s var(--ease-io)}
.float-img.is-on{opacity:1;scale:1}
.float-img.is-on img{clip-path:inset(0 0 round 14px)}

/* 小标签 */
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.14em;color:var(--muted-dark)}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange)}

/* 大页脚 */
.foot{position:relative;padding:36px var(--gutter) 20px;border-top:1px solid var(--line-dark);font-size:14px;color:var(--muted-dark);overflow:hidden}
.foot-grid{display:grid;grid-template-columns:minmax(0,1.6fr) repeat(5,minmax(0,1fr));gap:32px}
.foot-brand{display:flex;align-items:center;gap:10px;color:var(--on-dark);font-size:15px}
.foot-lead p{margin-top:18px;max-width:20em;line-height:1.7}
.foot-col h4{margin:0 0 16px;font-size:13px;font-weight:500;letter-spacing:.14em;color:var(--on-dark)}
.foot-col ul{display:grid;gap:10px}
.foot-col a,.foot-col button{position:relative;transition:color .3s;text-align:left}
.foot-col a:hover,.foot-col button:hover{color:var(--on-dark)}
.foot-col .foot-hi{color:var(--orange-light)}
.foot-word{display:flex;justify-content:space-between;margin:20px 0 0;font-family:var(--display);font-weight:500;font-size:clamp(36px,8vw,88px);line-height:.85;letter-spacing:-.04em;overflow:hidden;padding-bottom:.04em;user-select:none}
.foot-word span{display:inline-block;background:linear-gradient(180deg,var(--on-dark) 20%,rgba(241,239,232,.28) 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.foot-word span.sp{width:.25em}
.foot-word.is-in span{transform:none}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-top:28px;padding-top:20px;border-top:1px solid var(--line-dark);font-size:13px}
.foot-top{display:inline-flex;align-items:center;gap:8px;transition:color .3s}
.foot-top:hover{color:var(--on-dark)}

/* 首页：看全部服务 */
.what-more{display:flex;justify-content:flex-end;padding:28px var(--gutter) 0}
.link-arrow{display:inline-flex;align-items:center;gap:10px;font-size:15px;color:var(--on-dark);padding-bottom:4px;background:linear-gradient(var(--orange-light),var(--orange-light)) left bottom/0 1px no-repeat;transition:background-size .5s var(--ease)}
.link-arrow::after{content:"→";transition:transform .4s var(--ease)}
.link-arrow:hover{background-size:100% 1px}
.link-arrow:hover::after{transform:translateX(6px)}

/* 首页：继续了解（大号行链接） */
.more{padding:40px 0 0;border-top:1px solid var(--line-dark)}
.more-row{position:relative;display:grid;grid-template-columns:72px minmax(0,1fr) auto 56px;align-items:center;gap:24px;padding:18px var(--gutter);border-bottom:1px solid var(--line-dark);overflow:hidden;isolation:isolate}
.more-row::before{content:"";position:absolute;inset:0;z-index:-1;background:var(--orange);transform:scaleY(0);transform-origin:bottom;transition:transform .6s var(--ease-io)}
.more-row:hover::before{transform:scaleY(1)}
.more-no{font-size:13px;color:var(--muted-dark);transition:color .4s}
.more-name{font-family:var(--display);font-weight:500;font-size:clamp(32px,4vw,56px);line-height:1;letter-spacing:-.02em;transition:transform .6s var(--ease)}
.more-note{font-size:15px;color:var(--muted-dark);transition:color .4s}
.more-arrow{justify-self:end;width:48px;height:48px;border-radius:50%;border:1px solid var(--line-dark);display:grid;place-items:center;font-size:18px;transition:transform .6s var(--ease),border-color .4s,background-color .4s}
.more-row:hover .more-name{transform:translateX(24px)}
.more-row:hover .more-no,.more-row:hover .more-note{color:rgba(255,253,247,.85)}
.more-row:hover .more-arrow{transform:rotate(-45deg);border-color:transparent;background:#fffdf7;color:var(--orange)}

@media (max-width:1180px){
  .foot-grid{grid-template-columns:repeat(5,minmax(0,1fr))}
  .foot-lead{grid-column:1/-1}
}

@media (max-width:900px){
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 24px}
  .foot-lead{grid-column:1/-1}
  .foot-col ul{gap:0}
  .foot-col a,.foot-col button{display:inline-block;padding:10px 0}
  .figures{grid-template-columns:1fr}
  .more-row{grid-template-columns:40px minmax(0,1fr) 44px;gap:14px}
  .more-note{display:none}
  .more-arrow{width:40px;height:40px}
  .what-more{justify-content:flex-start}
}
@media (prefers-reduced-motion:reduce){
  .hero-sub,.hero-actions,.phero-sub,.xhero-sub,.block-head h2[data-split] ~ p,.cta h2[data-split] ~ p{opacity:1;transform:none}
}