@font-face{font-family:Inter;src:url('/assets/fonts/inter-400.ttf') format('truetype');font-weight:400;font-display:swap}
@font-face{font-family:Inter;src:url('/assets/fonts/inter-700.ttf') format('truetype');font-weight:500 700;font-display:swap}
@font-face{font-family:Inter;src:url('/assets/fonts/inter-800.ttf') format('truetype');font-weight:800;font-display:swap}
@font-face{font-family:Inter;src:url('/assets/fonts/inter-900.ttf') format('truetype');font-weight:900;font-display:swap}

/* ---------- Tokens ---------- */
:root{
  --bg:#0b0b0c;--surface:#121214;--surface-2:#19191c;--surface-3:#232327;
  --ink:#f2f2f0;--ink-2:#c9c9c5;--muted:#8e8e8a;--line:#202023;--line-strong:#34343a;
  --accent:#ff5b3d;--accent-strong:#ff7a61;--accent-soft:rgba(255,91,61,.12);--ok:#5cc58a;--ok-soft:rgba(92,197,138,.12);
  --band:#141416;--band-ink:#f2f2f0;--band-muted:#8e8e8a;--band-line:#2a2a2e;--band-surface:#1b1b1e;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 28px rgba(0,0,0,.35);--shadow-lg:0 2px 6px rgba(0,0,0,.4),0 24px 60px rgba(0,0,0,.55);
  --outline:rgba(242,242,240,.42);
  --radius:14px;--radius-sm:8px;
  --gutter:clamp(18px,4vw,64px);--maxw:1480px;
  --font:Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Noto Sans CJK SC","Microsoft YaHei",sans-serif;
  --ease:cubic-bezier(.2,.7,.2,1);
  color-scheme:dark;
}
/* Dark is the house style; light is an opt-in from the header toggle. */
:root[data-theme="light"]{
  --bg:#f6f6f3;--surface:#ffffff;--surface-2:#eeeeea;--surface-3:#e5e5e0;
  --ink:#121212;--ink-2:#3a3a3a;--muted:#6a6a68;--line:#e1e1dc;--line-strong:#cbcbc5;
  --accent:#e5432a;--accent-strong:#c33520;--accent-soft:rgba(229,67,42,.09);--ok:#2f8a57;--ok-soft:rgba(47,138,87,.1);
  --band:#111112;--band-ink:#f3f3f1;--band-muted:#a3a3a0;--band-line:#2c2c2e;--band-surface:#1a1a1c;
  --shadow:0 1px 2px rgba(0,0,0,.04),0 8px 28px rgba(0,0,0,.06);--shadow-lg:0 2px 6px rgba(0,0,0,.05),0 24px 60px rgba(0,0,0,.12);
  --outline:rgba(18,18,18,.38);
  color-scheme:light;
}

/* ---------- Base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%}
html.no-scroll{overflow:hidden}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:clip}
h1,h2,h3,p,blockquote,figure,dl,dd{margin:0}
h1,h2,h3{font-weight:700;line-height:1.2;text-wrap:balance}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
svg{width:20px;height:20px;flex:none}
kbd{font-family:var(--font);font-size:11px;line-height:1;padding:3px 6px;border:1px solid var(--line-strong);border-bottom-width:2px;border-radius:6px;color:var(--muted);background:var(--surface)}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:var(--accent);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
[hidden]{display:none!important}
.accent{color:var(--accent)}
.muted{color:var(--muted)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-link{position:fixed;left:16px;top:-80px;z-index:200;background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:10px}
.skip-link:focus{top:12px}
#app{min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
.kicker{display:flex;align-items:center;gap:12px;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:500}
.kicker>i{width:22px;height:2px;background:var(--accent);border-radius:2px;flex:none}

/* ---------- Buttons & chips ---------- */
.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:46px;padding:0 20px;border-radius:999px;border:1px solid var(--line-strong);background:var(--surface);font-size:15px;font-weight:500;line-height:1;white-space:nowrap;transition:transform .2s var(--ease),background .2s,border-color .2s,box-shadow .2s,color .2s}
.button:hover{border-color:var(--ink);transform:translateY(-1px)}
.button:active{transform:translateY(0) scale(.98)}
.button svg{width:18px;height:18px}
.button-primary{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.button-primary:hover{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 10px 24px -8px var(--accent)}
.button-ghost{background:transparent;border-color:transparent;color:var(--muted)}
.button-ghost:hover{color:var(--ink);border-color:var(--line-strong)}
.button-lg{min-height:56px;padding:0 26px;font-size:16px}
.button-invert{background:transparent;color:var(--band-ink);border-color:var(--band-line)}
.button-invert:hover{background:var(--band-ink);color:var(--band);border-color:var(--band-ink)}
.text-link{display:inline-flex;align-items:center;gap:10px;min-height:44px;font-size:15px;font-weight:500}
.text-link svg{color:var(--accent);transition:transform .25s var(--ease)}
.text-link:hover svg{transform:translateX(4px)}
.text-link.back:hover svg{transform:translateX(-4px)}
.chip-button{display:inline-flex;align-items:center;gap:8px;min-height:36px;padding:0 14px;border:1px solid var(--line-strong);border-radius:999px;font-size:13px;color:var(--ink-2);transition:border-color .2s,color .2s,background .2s}
.chip-button:hover{border-color:var(--accent);color:var(--accent)}
.chip-button svg{width:15px;height:15px}
.tag-list{display:flex;flex-wrap:wrap;gap:6px}
.tag-list li{font-size:12px;line-height:1;padding:6px 9px;border-radius:999px;background:var(--surface-2);color:var(--ink-2);white-space:nowrap}
.segmented{display:inline-flex;gap:2px;padding:4px;border-radius:999px;background:var(--surface-2);border:1px solid var(--line)}
.segmented button{display:inline-flex;align-items:center;gap:6px;min-height:36px;padding:0 14px;border-radius:999px;font-size:14px;color:var(--muted);transition:background .2s,color .2s,box-shadow .2s;white-space:nowrap}
.segmented button:hover{color:var(--ink)}
.segmented button[aria-pressed="true"]{background:var(--surface);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.1)}
.segmented sup{font-size:11px;color:var(--accent);top:-.4em}
.segmented svg{width:17px;height:17px}
.link-chip{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:5px 12px 5px 5px;border:1px solid var(--line);border-radius:999px;background:var(--surface);font-size:14px;max-width:100%;transition:border-color .2s,transform .2s var(--ease)}
.link-chip img{width:34px;height:34px;border-radius:50%;object-fit:cover;object-position:top}
.link-chip>i{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent)}
.link-chip>i svg{width:16px;height:16px}
.link-chip b{font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.link-chip>svg{width:14px;height:14px;color:var(--accent)}
.link-chip:hover{border-color:var(--accent);transform:translateY(-1px)}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:500;padding:5px 10px;border-radius:999px}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.badge-ok{color:var(--ok);background:var(--ok-soft)}
.badge-wip{color:var(--accent);background:var(--accent-soft)}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:24px;height:76px;padding:0 var(--gutter);transition:background .3s,box-shadow .3s,height .3s}
.scrolled .site-header{background:color-mix(in srgb,var(--bg) 78%,transparent);backdrop-filter:saturate(1.6) blur(18px);-webkit-backdrop-filter:saturate(1.6) blur(18px);box-shadow:0 1px 0 var(--line)}
.identity{display:flex;align-items:center;gap:12px;margin-right:auto;min-height:44px}
.identity-mark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:var(--ink);color:var(--bg);font-weight:700;font-size:18px;position:relative;transition:transform .4s var(--ease)}
.identity-mark::after{content:"";position:absolute;right:-3px;bottom:-3px;width:10px;height:10px;border-radius:50%;background:var(--accent);border:2px solid var(--bg)}
.identity:hover .identity-mark{transform:rotate(-8deg)}
.identity-text{display:flex;flex-direction:column;line-height:1.15}
.identity-text strong{font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.identity-text small{font-size:12px;color:var(--muted)}
.main-nav{display:flex;gap:4px}
.main-nav a{position:relative;display:inline-flex;align-items:center;min-height:40px;padding:0 14px;border-radius:999px;font-size:15px;color:var(--ink-2);transition:background .2s,color .2s}
.main-nav a:hover{background:var(--surface-2);color:var(--ink)}
.main-nav a[aria-current]{color:var(--ink);font-weight:600}
.main-nav a[aria-current]::after{content:"";position:absolute;left:50%;bottom:4px;width:4px;height:4px;margin-left:-2px;border-radius:50%;background:var(--accent)}
.header-tools{display:flex;align-items:center;gap:6px}
.tool-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;min-width:40px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink-2);font-size:14px;transition:border-color .2s,color .2s,background .2s}
.tool-button:hover{border-color:var(--line-strong);color:var(--ink)}
.tool-button.icon-only{padding:0}
.tool-button svg{width:18px;height:18px}
.search-trigger{color:var(--muted);padding-right:8px}
.search-trigger kbd{margin-left:4px}
.lang-switch{gap:4px;font-size:13px;font-weight:600;color:var(--muted)}
.lang-switch .on{color:var(--ink)}
.lang-switch span+span::before{content:"/";margin-right:4px;color:var(--line-strong);font-weight:400}
.theme-sun{display:none}
[data-theme="light"] .theme-sun{display:inline-flex}
[data-theme="light"] .theme-moon{display:none}
.menu-toggle{display:none}
.menu-close{display:none}
.scroll-progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:60;pointer-events:none}
.scroll-progress i{display:block;height:100%;background:var(--accent);transform-origin:left;transform:scaleX(0)}

/* ---------- Reveal ---------- */
.motion [data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.motion [data-reveal].in{opacity:1;transform:none}

/* ---------- Section head ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:36px;flex-wrap:wrap}
.section-head h2{font-size:clamp(30px,3.6vw,52px);letter-spacing:-.035em;line-height:1.12;margin-top:16px}
.section-aside{display:flex;align-items:center;min-width:0;max-width:100%}
.section-note{max-width:420px;color:var(--muted);font-size:15px}

/* ---------- Graph & headline accents ---------- */
.hero-em{background:linear-gradient(100deg,var(--accent) 10%,#ff9a52 95%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px}
.graph-panel{position:relative;margin:0 0 clamp(56px,6vw,88px);border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;display:flex;flex-direction:column}
.graph-panel::before{content:"";position:absolute;inset:0;background-image:radial-gradient(var(--line-strong) 1px,transparent 1px);background-size:22px 22px;opacity:.55;mask-image:radial-gradient(ellipse at center,#000 30%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse at center,#000 30%,transparent 75%);pointer-events:none}
.graph-head{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:16px 18px;border-bottom:1px solid var(--line)}
.graph-title{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600}
.graph-title svg{color:var(--accent);width:18px;height:18px}
.graph-legend{display:flex;gap:4px;flex-wrap:wrap}
.graph-legend button{display:inline-flex;align-items:center;gap:7px;min-height:32px;padding:0 10px;border-radius:999px;font-size:13px;color:var(--muted);border:1px solid transparent;transition:all .2s}
.graph-legend button:hover{color:var(--ink)}
.graph-legend button[aria-pressed="true"]{border-color:var(--line-strong);color:var(--ink);background:var(--surface-2)}
.graph-legend i{width:9px;height:9px;border-radius:50%;flex:none}
.lg-topic{background:var(--accent)}
.lg-paper{border:1.5px solid var(--accent);border-radius:1px!important;transform:rotate(45deg) scale(.85)}
.lg-project{border:1.5px solid var(--ink)}
.graph-stage{position:relative;flex:1;min-height:clamp(420px,40vw,580px)}
.graph-stage canvas{position:absolute;inset:0;cursor:grab;touch-action:none}
.graph-tip{position:absolute;left:0;top:0;z-index:3;width:260px;padding:14px 16px;border-radius:14px;background:var(--ink);color:var(--bg);box-shadow:var(--shadow-lg);pointer-events:none;font-size:13px;line-height:1.5}
.graph-tip span{font-size:11px;letter-spacing:.12em;text-transform:uppercase;opacity:.6}
.graph-tip strong{display:block;font-size:16px;margin:4px 0 6px}
.graph-tip p{opacity:.78}
.graph-tip em{display:block;margin-top:10px;font-style:normal;color:var(--accent)}
.graph-hint{position:absolute;left:18px;bottom:14px;font-size:12px;color:var(--muted);pointer-events:none}

/* ---------- Particle intro ---------- */
.intro,.over-stage .site-header{--bg:#0b0b0c;--ink:#f2f2f0;--ink-2:#d0d0cc;--muted:#9a9a97;--line:rgba(255,255,255,.12);--line-strong:rgba(255,255,255,.24);--surface:rgba(255,255,255,.06);--surface-2:rgba(255,255,255,.1);--accent:#ff5b3d}
.over-stage .site-header{color:var(--ink)}
.over-stage:not(.scrolled) .site-header{background:transparent}
.intro{position:relative;height:calc(100svh + 5 * 92svh);margin-top:-76px;background:#0b0b0c;color:var(--ink)}
.intro-sticky{position:sticky;top:0;height:100svh;overflow:hidden;cursor:crosshair}
.intro canvas{position:absolute;inset:0}
.intro-glow{position:absolute;inset:0;pointer-events:none;background:radial-gradient(60% 55% at 62% 46%,rgba(255,91,61,.13),transparent 70%),radial-gradient(120% 90% at 50% 50%,transparent 55%,rgba(0,0,0,.65))}
.intro-chapters{position:absolute;left:var(--gutter);bottom:clamp(72px,12vh,140px);width:min(560px,42vw);height:0}
.chapter{position:absolute;left:0;bottom:0;width:100%;will-change:opacity,transform;pointer-events:none}
.chapter.is-live{pointer-events:auto}
.chapter-year{font-size:clamp(56px,8vw,128px);font-weight:800;line-height:.9;letter-spacing:-.05em;color:transparent;-webkit-text-stroke:1.2px rgba(255,255,255,.45);font-variant-numeric:tabular-nums}
.chapter h2{font-size:clamp(28px,3.2vw,48px);letter-spacing:-.03em;line-height:1.15;margin-top:18px}
.chapter>p:last-child,.chapter-final>p:not(.chapter-year){margin-top:16px;font-size:clamp(15px,1.25vw,18px);line-height:1.7;color:var(--muted);max-width:480px}
.chapter-final{width:min(640px,46vw)}
.chapter-final .chapter-year{font-size:13px;letter-spacing:.14em;-webkit-text-stroke:0;color:var(--muted);font-weight:500;line-height:1.4}
.chapter-final h1{font-size:clamp(52px,7vw,116px);line-height:1.04;letter-spacing:-.04em;font-weight:800;margin-top:16px}
:lang(zh-CN) .chapter-final h1{letter-spacing:-.02em;line-height:1.1}
.chapter-final .hero-actions{margin-top:28px}
.button-glass{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.22);color:#f2f2f0;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.button-glass:hover{background:#f2f2f0;color:#111;border-color:#f2f2f0}
.intro-rail{position:absolute;right:var(--gutter);top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:4px}
.intro-rail button{display:flex;align-items:center;justify-content:flex-end;gap:12px;min-height:34px;flex-direction:row-reverse;font-size:13px;color:rgba(255,255,255,.4);transition:color .3s}
.intro-rail button i{width:6px;height:6px;border-radius:50%;background:currentColor;transition:transform .3s var(--ease),background .3s}
.intro-rail button:hover{color:#fff}
.intro-rail button.on{color:#fff}
.intro-rail button.on i{background:var(--accent);transform:scale(1.8)}
.intro-rail li:last-child button{margin-top:8px;color:var(--accent)}
.intro-hint{position:absolute;left:50%;bottom:28px;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--muted);pointer-events:none;text-align:center}
.intro-hint i{width:1px;height:36px;background:linear-gradient(var(--accent),transparent);animation:drip 1.8s var(--ease) infinite;transform-origin:top}
.intro-hint em{font-style:normal;letter-spacing:.04em;opacity:.7}
@keyframes drip{0%{transform:scaleY(0)}50%{transform:scaleY(1)}100%{transform:scaleY(1);opacity:0}}
.intro-progress{position:absolute;left:0;right:0;bottom:0;height:2px;background:rgba(255,255,255,.08);transition:opacity .4s}
.intro-progress i{display:block;height:100%;background:var(--accent);transform-origin:left;transform:scaleX(0)}

/* ---------- Work ---------- */
.home>.sec{max-width:var(--maxw);margin-inline:auto}
.sec{padding:clamp(96px,11vw,170px) var(--gutter) 0;scroll-margin-top:40px}

/* Chapter heads continue the intro: outlined numeral, label, title on one 12-column grid. */
.chapter-head{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:0 clamp(16px,2vw,28px);align-items:end;padding-top:28px;border-top:1px solid var(--line);margin-bottom:clamp(40px,5vw,72px)}
.ch-num{grid-column:1/4;font-size:clamp(72px,9vw,148px);font-weight:800;line-height:.82;letter-spacing:-.05em;color:transparent;-webkit-text-stroke:1.2px var(--outline);font-variant-numeric:tabular-nums}
.ch-title{grid-column:4/11}
.chapter-head:not(:has(.ch-aside)) .ch-title{grid-column:4/13}
#contact .ch-title h2{font-size:clamp(24px,2.7vw,40px);max-width:none;line-height:1.3;word-break:keep-all;overflow-wrap:anywhere;text-wrap:wrap}
.ch-title h2{font-size:clamp(28px,3.3vw,50px);line-height:1.15;letter-spacing:-.03em;margin-top:14px;max-width:20em}
.ch-aside{grid-column:11/13;justify-self:end;display:flex;flex-direction:column;align-items:flex-end;gap:10px}

/* Facts under the intro */
.facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(16px,2vw,28px);padding:clamp(56px,7vw,96px) var(--gutter) 0;max-width:var(--maxw);margin-inline:auto}
.fact{padding-top:22px;border-top:1px solid var(--line)}
.fact-num{font-size:clamp(56px,6.4vw,104px);font-weight:800;line-height:.9;letter-spacing:-.05em;color:transparent;-webkit-text-stroke:1.2px var(--outline);font-variant-numeric:tabular-nums}
.fact-unit{margin-top:16px;font-size:16px;font-weight:600}
.fact-note{margin-top:6px;font-size:14px;color:var(--muted);line-height:1.55}

/* Work gallery: pinned, scrolls sideways on wide screens */
.works{position:relative}
.works-pin{position:sticky;top:0;min-height:100svh;display:flex;flex-direction:column;justify-content:center;overflow:hidden;padding:clamp(88px,10vh,120px) 0 clamp(28px,5vh,56px)}
.works .chapter-head{margin:0 var(--gutter) clamp(28px,4vh,48px)}
.works-count{font-size:15px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.works-count b{color:var(--ink);font-weight:600}
.works-bar{width:140px;height:2px;background:var(--line)}
.works-bar i{display:block;height:100%;background:var(--accent);transform-origin:left;transform:scaleX(0)}
.works-track{display:flex;gap:clamp(20px,2.4vw,36px);padding:0 var(--gutter);width:max-content;will-change:transform}
.work-panel{--pw:min(46vw,calc((100svh - 340px) * 1.6),760px);flex:none;width:var(--pw);display:flex;flex-direction:column;gap:18px}
.panel-media{position:relative;aspect-ratio:16/10;border-radius:var(--radius-sm);overflow:hidden;background:var(--surface-2)}
.motion .work-panel .panel-media{clip-path:inset(0 0 100% 0);transition:clip-path 1.1s var(--ease)}
.motion .work-panel.in .panel-media{clip-path:inset(0 0 0 0)}
.panel-info{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:18px;align-items:start}
.panel-num{font-size:44px;font-weight:800;line-height:.9;letter-spacing:-.05em;color:transparent;-webkit-text-stroke:1px var(--outline);font-variant-numeric:tabular-nums;transition:-webkit-text-stroke-color .3s,color .3s}
.work-panel:hover .panel-num{color:var(--accent);-webkit-text-stroke-color:var(--accent)}
.panel-cat{font-size:12px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase}
.panel-info h3{font-size:clamp(20px,1.8vw,28px);letter-spacing:-.025em;margin-top:6px}
.panel-sub{margin-top:4px;font-size:15px;color:var(--muted)}
.panel-go{width:44px;height:44px;border-radius:50%;border:1px solid var(--line-strong);display:grid;place-items:center;color:var(--ink);transition:background .3s,border-color .3s,transform .4s var(--ease)}
.work-panel:hover .panel-go{background:var(--accent);border-color:var(--accent);color:#fff;transform:rotate(45deg)}
.work-end{--pw:min(340px,30vw);justify-content:center;gap:20px;padding-left:clamp(20px,2vw,32px);border-left:1px solid var(--line)}
.end-line{font-size:clamp(20px,1.7vw,26px);line-height:1.45;letter-spacing:-.02em;font-weight:600}
.work-end .text-link{color:var(--muted)}

/* Covers */
.cover{position:absolute;inset:0}
.cover>img{width:100%;height:100%;object-fit:cover;object-position:top center;transition:transform .9s var(--ease)}
.work-panel:hover .cover>img,.work-panel:hover .cover .window,.work-panel:hover .acorn-char{transform:scale(1.04)}
.cover-phone{background:linear-gradient(140deg,#221e1a,#1d1b24)}
[data-theme="light"] .cover-phone{background:linear-gradient(140deg,#f3eee8,#e9e4f0)}
.phone{position:absolute;width:38%;max-width:220px;aspect-ratio:1206/2622;top:9%;left:50%;border-radius:30px;border:6px solid #141414;background:#141414;overflow:hidden;box-shadow:0 30px 50px -20px rgba(0,0,0,.45);transform:translateX(-30%) rotate(7deg);transition:transform .7s var(--ease)}
.phone img{width:100%;height:100%;object-fit:cover;object-position:top}
.phone-back{transform:translateX(-95%) rotate(-8deg) scale(.88);opacity:.9}
.work-panel:hover .cover-phone .phone:not(.phone-back){transform:translateX(-24%) rotate(4deg) translateY(-8px)}
.work-panel:hover .cover-phone .phone-back{transform:translateX(-108%) rotate(-11deg) scale(.88)}
.cover-acorn{background:#e4ecdf}
.cover-acorn .acorn-bg{width:100%;height:100%;object-fit:cover}
.acorn-char{position:absolute;right:6%;bottom:-2%;height:82%;width:auto;filter:drop-shadow(0 10px 18px rgba(0,0,0,.18));transition:transform .7s var(--ease);transform-origin:bottom center}
.cover-live{background:radial-gradient(circle at 80% 20%,#183a6b,#07172d 60%);display:flex}
.live-copy{position:relative;z-index:2;padding:clamp(20px,3vw,36px);color:#fff;flex:1}
.live-copy span{display:inline-flex;align-items:center;gap:8px;font-size:11px;letter-spacing:.18em;color:#b4c3d8}
.live-copy span i{width:8px;height:8px;border-radius:50%;background:#ff4d3a;animation:blink 1.4s steps(2) infinite}
@keyframes blink{50%{opacity:.2}}
.live-copy p{font-size:clamp(28px,3.4vw,50px);font-weight:800;line-height:1.02;letter-spacing:-.045em;margin-top:18px}
.live-copy b{color:#ff5b3d}
.cover-live .live-shot{position:absolute;right:6%;bottom:0;height:92%;width:auto;border-radius:12px 12px 0 0;box-shadow:0 20px 50px rgba(0,0,0,.5);transition:transform .7s var(--ease)}
.work-panel:hover .live-shot{transform:translateY(-8px)}
.cover-duo .duo-main{width:100%;height:100%;object-fit:cover;object-position:top left}
.phone-small{width:26%;top:14%;left:auto;right:6%;border-width:4px;border-radius:20px;transform:rotate(4deg)}
.work-panel:hover .phone-small{transform:rotate(0) translateY(-6px)}
.cover-window{background:linear-gradient(160deg,var(--surface-2),var(--surface-3));padding:7% 7% 0}
.cover-window .window{position:relative;height:100%;border-radius:12px 12px 0 0;overflow:hidden;box-shadow:0 18px 40px -12px rgba(0,0,0,.25);background:#fff;transform-origin:bottom center;transition:transform .9s var(--ease)}
.cover-window .window img{width:100%;height:calc(100% - 26px);object-fit:cover;object-position:top left}
.window-bar{display:flex;align-items:center;gap:6px;height:26px;padding:0 12px;background:#ececec;border-bottom:1px solid #ddd}
.window-bar i{width:9px;height:9px;border-radius:50%;background:#ff5f57}
.window-bar i:nth-child(2){background:#febc2e}.window-bar i:nth-child(3){background:#28c840}


.cursor-label{position:fixed;left:0;top:0;z-index:80;pointer-events:none}
.cursor-label span{display:grid;place-items:center;width:84px;height:84px;margin:-42px 0 0 -42px;border-radius:50%;background:var(--accent);color:#fff;font-size:14px;font-weight:600;letter-spacing:.04em;transform:scale(0);transition:transform .35s var(--ease)}
.cursor-label.show span{transform:scale(1)}

/* ---------- Home: research columns & publication rows ---------- */
.topic-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line)}
.topic-col{padding:32px clamp(16px,2vw,32px) 40px 0}
.topic-col+.topic-col{padding-left:clamp(16px,2vw,32px);border-left:1px solid var(--line)}
.topic-idx{font-size:13px;font-weight:600;color:var(--accent);font-variant-numeric:tabular-nums}
.topic-col h3{font-size:clamp(20px,1.8vw,26px);letter-spacing:-.02em;margin-top:14px}
.topic-q{margin-top:14px;font-size:17px;line-height:1.65;color:var(--ink-2)}
.topic-links{display:flex;flex-direction:column;gap:2px;margin-top:22px}
.topic-links a{width:fit-content;min-height:32px;display:inline-flex;align-items:center;font-size:14px;color:var(--muted);border-bottom:1px solid transparent;transition:color .2s,border-color .2s}
.topic-links a::before{content:"→";margin-right:8px;color:var(--accent)}
.topic-links a:hover{color:var(--ink);border-color:var(--accent)}
.pub-rows{margin-top:clamp(40px,5vw,72px);border-top:1px solid var(--line-strong)}
.pub-rows li{display:grid;grid-template-columns:72px 170px minmax(0,1fr) 240px;gap:8px 24px;align-items:baseline;padding:22px 0;border-bottom:1px solid var(--line)}
.pub-y{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.pub-s{font-size:13px;color:var(--accent)}
.pub-s.ok{color:var(--ok)}
.pub-t{font-size:17px;line-height:1.5;font-weight:500}
.pub-t a{background:linear-gradient(var(--accent),var(--accent)) 0 100%/0 1px no-repeat;transition:background-size .4s var(--ease)}
.pub-t a:hover{background-size:100% 1px}
.pub-j{font-size:14px;color:var(--muted);font-style:italic}

/* ---------- Publications ---------- */
.pub-card{display:flex;flex-direction:column;gap:12px;padding:24px;border-radius:var(--radius);border:1px solid var(--line);background:var(--surface);scroll-margin-top:110px;transition:border-color .3s,transform .3s var(--ease)}
.pub-card:hover{border-color:var(--line-strong)}
.pub-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.pub-year{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.pub-card h3{font-size:clamp(18px,1.6vw,22px);line-height:1.4;letter-spacing:-.015em;font-weight:600}
.pub-card.is-compact h3{font-size:17px}
.pub-card h3 a{background:linear-gradient(var(--accent),var(--accent)) 0 100%/0 1.5px no-repeat;transition:background-size .4s var(--ease)}
.pub-card h3 a:hover{background-size:100% 1.5px}
.pub-card h3 svg{display:inline;width:16px;height:16px;margin-left:6px;vertical-align:-2px;color:var(--accent)}
.pub-meta{font-size:14px;color:var(--muted);line-height:1.6}
.pub-meta em{font-style:italic}
.pub-summary{font-size:16px;color:var(--ink-2);max-width:820px}
.pub-related{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.pub-related>span{font-size:12px;letter-spacing:.1em;color:var(--muted);margin-right:6px}
.pub-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px}
.flash{animation:flash 1.6s var(--ease)}
@keyframes flash{0%,30%{box-shadow:0 0 0 3px var(--accent)}100%{box-shadow:0 0 0 3px transparent}}

/* ---------- Timeline ---------- */
/* Study on the left, work on the right, years running down the centre spine. */
.braid{position:relative}
.braid-body{--yr:96px;position:relative;height:calc(var(--span) * var(--yr));margin-top:12px}
.braid-head{position:sticky;top:76px;z-index:6;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;padding:10px 0 18px;background:linear-gradient(var(--bg) 72%,transparent)}
.lane-name{display:flex;align-items:center;gap:12px;font-size:13px;letter-spacing:.16em;color:var(--muted)}
.lane-name i{width:32px;height:4px;border-radius:4px;background:var(--accent)}
.lane-work{justify-self:end}
.lane-work i{background:var(--ink)}
.braid-year{font-size:clamp(56px,6vw,96px);font-weight:800;line-height:1;letter-spacing:-.05em;color:transparent;-webkit-text-stroke:1.2px var(--outline);font-variant-numeric:tabular-nums;min-width:3ch;text-align:center}
.braid-spine{position:absolute;left:50%;top:0;bottom:0;width:1px;background:var(--line-strong)}
.spine-fill{position:absolute;inset:0;background:var(--accent);transform-origin:top;transform:scaleY(0)}
.tick{position:absolute;left:50%;top:calc(var(--s) * var(--yr));transform:translate(-50%,-50%);padding:2px 6px;background:var(--bg);font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums;z-index:1}
.tick.is-early{font-size:10px;opacity:.6}
.playhead{position:absolute;left:0;top:0;width:13px;height:13px;margin:-6px 0 0 -6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 6px var(--accent-soft),0 0 26px var(--accent);z-index:3}
.b-item{position:absolute;top:calc(var(--s) * var(--yr));height:calc(var(--d) * var(--yr));width:calc(50% - 26px)}
.b-item.lane-edu{right:calc(50% + 26px)}
.b-item.lane-work{left:calc(50% + 26px)}
.b-bar{position:absolute;top:0;bottom:0;width:4px;border-radius:4px;background:var(--line)}
.lane-edu .b-bar{right:0}
.lane-work .b-bar{left:0}
.b-bar b{position:absolute;inset:0;border-radius:inherit;background:var(--accent);transform-origin:top;transform:scaleY(var(--p,0))}
.lane-work .b-bar b{background:var(--ink)}
.b-card{position:relative;max-width:460px;padding:0 30px;transform:translateY(var(--shift,0));transition:opacity .5s var(--ease)}
.lane-edu .b-card{margin-left:auto;text-align:right}
.b-item:not(.on) .b-card{opacity:.3}
.b-lane{display:none}
.b-period{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.is-now .b-period{color:var(--accent)}
.b-card h3{font-size:clamp(19px,1.6vw,23px);letter-spacing:-.02em;margin-top:6px}
.b-role{margin-top:4px;font-size:15px;font-weight:500;color:var(--ink-2)}
.b-desc{margin-top:10px;font-size:15px;line-height:1.65;color:var(--muted)}
.b-list{margin-top:10px;display:grid;gap:6px}
.b-list li{position:relative;padding-left:16px;font-size:14px;line-height:1.6;color:var(--ink-2)}
.b-list li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:1px;background:var(--accent)}
.b-works{display:flex;flex-wrap:wrap;align-items:center;gap:6px 14px;margin-top:14px;font-size:14px}
.b-works span{width:100%;font-size:12px;letter-spacing:.1em;color:var(--muted)}
.b-works a{border-bottom:1px solid var(--accent);line-height:1.5;transition:color .2s}
.b-works a:hover{color:var(--accent)}
.b-band{position:absolute;left:0;right:0;top:calc(var(--s) * var(--yr));height:calc(var(--d) * var(--yr));background:linear-gradient(90deg,transparent,var(--accent-soft) 28%,var(--accent-soft) 72%,transparent);pointer-events:none}
.b-band{border-top:1px dashed color-mix(in srgb,var(--accent) 45%,transparent)}
/* The band's label runs vertically down the spine, between the two tracks. */
.b-band span{position:absolute;left:50%;top:12px;transform:translateX(-50%);z-index:4;writing-mode:vertical-rl;padding:10px 4px;border-radius:999px;background:var(--accent);color:#fff;font-size:12px;font-weight:600;letter-spacing:.08em;white-space:nowrap}

/* ---------- Contact ---------- */
.intent{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:0 clamp(16px,2vw,28px)}
.intent-list{grid-column:4/9}
.intent-list li{display:grid;grid-template-columns:44px minmax(0,1fr);padding:22px 0;border-top:1px solid var(--line)}
.intent-list span{font-size:13px;font-weight:600;color:var(--accent);padding-top:4px;font-variant-numeric:tabular-nums}
.intent-list h3{font-size:19px;letter-spacing:-.015em}
.intent-list p{margin-top:6px;font-size:15px;line-height:1.7;color:var(--muted)}
.intent-contact{grid-column:9/13;padding-top:22px;border-top:1px solid var(--line-strong)}
.mail-link{display:inline-flex;align-items:center;gap:.3em;width:fit-content;margin-top:16px;font-size:clamp(22px,2vw,30px);font-weight:700;letter-spacing:-.03em;line-height:1.2;background:linear-gradient(var(--accent),var(--accent)) 0 100%/0 2px no-repeat;padding-bottom:4px;transition:background-size .6s var(--ease);overflow-wrap:anywhere}
.mail-link:hover{background-size:100% 2px}
.mail-link span{display:inline-grid;color:var(--accent);transition:transform .4s var(--ease)}
.mail-link span svg{width:.7em;height:.7em}
.mail-link:hover span{transform:rotate(45deg)}
.contact-actions{display:flex;flex-direction:column;align-items:flex-start;margin-top:14px}
.contact-actions .text-link{color:var(--ink-2)}
.thanks{margin-top:28px;font-size:14px;color:var(--muted)}

/* ---------- Footer ---------- */
.site-footer{margin-top:clamp(56px,7vw,100px);padding:48px var(--gutter) 28px;border-top:1px solid var(--line)}
.footer-top{display:grid;grid-template-columns:1.2fr 1fr auto;gap:32px;align-items:start;max-width:var(--maxw);margin:0 auto}
.footer-name{font-size:clamp(32px,4vw,56px);font-weight:800;letter-spacing:-.04em;line-height:1}
.footer-line{margin-top:10px;color:var(--muted);font-size:14px}
.footer-links{display:flex;flex-wrap:wrap;gap:4px 20px;font-size:15px}
.footer-links a{min-height:40px;display:inline-flex;align-items:center;color:var(--ink-2)}
.footer-links a:hover{color:var(--accent)}
.footer-contact{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.footer-contact>a{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:500;min-height:40px}
.footer-contact>a svg{color:var(--accent)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;max-width:var(--maxw);margin:40px auto 0;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.footer-hint kbd{margin:0 2px}
.to-top{display:inline-flex;align-items:center;gap:8px;min-height:40px}
.to-top svg{width:16px;height:16px}
.to-top:hover{color:var(--ink)}

/* ---------- Inner pages ---------- */
.page{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
.page-hero{padding:clamp(48px,7vw,104px) 0 clamp(40px,5vw,72px)}
.page-hero h1{font-size:clamp(46px,7vw,110px);line-height:1.02;letter-spacing:-.045em;font-weight:800;margin-top:22px}
:lang(zh-CN) .page-hero h1{letter-spacing:-.02em;line-height:1.1}
.page-intro{display:grid;grid-template-columns:1fr 1.2fr;gap:clamp(24px,5vw,80px);margin-top:clamp(32px,4vw,56px);padding-top:28px;border-top:1px solid var(--line)}
.page-intro h2{font-size:clamp(21px,2vw,28px);line-height:1.5;letter-spacing:-.02em;font-weight:600}
.page-intro p{font-size:17px;line-height:1.85;color:var(--ink-2)}
.jump-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:36px}
.jump-links a{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:0 16px;border:1px solid var(--line);border-radius:999px;background:var(--surface);font-size:15px;transition:border-color .2s}
.jump-links a span{font-size:12px;color:var(--accent);font-weight:600}
.jump-links a:hover{border-color:var(--accent)}
.topic-list{border-top:1px solid var(--line-strong)}
.topic-row{display:grid;grid-template-columns:64px minmax(0,1fr) minmax(0,1.15fr);gap:clamp(20px,3vw,48px);padding:clamp(32px,4vw,56px) 0;border-bottom:1px solid var(--line);scroll-margin-top:96px;border-radius:4px}
.topic-num{font-size:14px;color:var(--accent);font-weight:600;padding-top:8px}
.topic-main h2{font-size:clamp(26px,2.8vw,40px);letter-spacing:-.03em}
.topic-main p{margin-top:16px;color:var(--ink-2);font-size:16px;max-width:520px}
.topic-side blockquote{font-size:clamp(19px,1.7vw,24px);line-height:1.55;font-weight:500;padding-left:20px;border-left:3px solid var(--accent)}
.topic-chips{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:20px}
.topic-chips>span{font-size:12px;letter-spacing:.1em;color:var(--muted);margin-right:6px;min-width:64px}
.pubs-section{padding-top:clamp(56px,7vw,100px)}
.pub-list{display:grid;gap:16px;margin-bottom:clamp(48px,6vw,80px)}
.page-cta{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding:36px;border-radius:24px;background:var(--surface);border:1px solid var(--line)}
.page-cta p{font-size:clamp(19px,1.8vw,24px);font-weight:600;letter-spacing:-.02em}
.about-path{margin-bottom:clamp(56px,7vw,100px)}
.statement{padding:clamp(40px,6vw,88px);border-radius:32px;background:var(--band);color:var(--band-ink);margin-bottom:clamp(56px,7vw,100px)}
.statement p{font-size:clamp(26px,3.6vw,54px);line-height:1.35;letter-spacing:-.035em;font-weight:600}
.statement em{font-style:normal;color:var(--accent)}
.honors{margin-bottom:0}
.honor-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.honor{padding:24px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);display:flex;flex-direction:column;gap:28px;min-height:180px;transition:transform .3s var(--ease),border-color .3s}
.honor:hover{transform:translateY(-3px);border-color:var(--accent)}
.honor span{font-size:13px;color:var(--accent);font-weight:600}
.honor p{font-size:16px;line-height:1.55;font-weight:500;margin-top:auto}
.page .contact{margin-inline:0!important;max-width:none}
.not-found{padding-top:15vh;min-height:60vh;display:flex;flex-direction:column;align-items:flex-start;gap:28px}
.not-found h1{font-size:clamp(44px,7vw,96px);letter-spacing:-.04em}

/* ---------- Case study ---------- */
.case-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:24px}
.case-pager{display:flex;align-items:center;gap:8px}
.case-count{font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums;min-width:64px;text-align:center}
.kbd-hint{display:flex;gap:4px;margin-right:8px}
.case-hero{padding:clamp(32px,5vw,72px) 0 clamp(32px,4vw,56px)}
.case-hero h1{font-size:clamp(40px,6.4vw,96px);line-height:1.05;letter-spacing:-.04em;font-weight:800;margin-top:20px;max-width:1200px}
:lang(zh-CN) .case-hero h1{letter-spacing:-.02em;line-height:1.12}
.case-sub{margin-top:18px;font-size:clamp(18px,1.8vw,25px);color:var(--muted);letter-spacing:-.015em;max-width:880px}
.case-meta{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-top:clamp(28px,4vw,48px);padding-top:24px;border-top:1px solid var(--line)}
.case-meta dt{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.case-meta dd{font-size:15px;line-height:1.6}
.status-pill{display:inline-flex;align-items:center;gap:8px}
.status-pill i{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px var(--ok-soft)}
.meta-links{display:flex;flex-direction:column;gap:6px}
.meta-links a{display:inline-flex;align-items:center;gap:6px;width:fit-content;border-bottom:1px solid var(--line-strong);transition:border-color .2s,color .2s}
.meta-links a:hover{color:var(--accent);border-color:var(--accent)}
.meta-links svg{width:14px;height:14px;color:var(--accent)}
.case-cover{margin:0}
.cover-button{position:relative;display:block;width:100%;height:clamp(320px,52vw,720px);border-radius:28px;overflow:hidden;background:var(--surface-2);cursor:zoom-in;border:1px solid var(--line)}
.case-yici .cover-button,.case-live-analysis .cover-button{height:clamp(420px,52vw,720px)}
.cover-button .cover>img{object-fit:cover}
.case-jinyue-space .cover-button .cover>img,.case-yixing-assets .cover-button .cover>img{object-position:center}
.zoom-pill{position:absolute;right:16px;bottom:16px;z-index:4;display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);font-size:13px;font-weight:500;box-shadow:var(--shadow);opacity:.92;transition:opacity .2s,transform .3s var(--ease)}
.zoom-pill svg{width:15px;height:15px}
.cover-button:hover .zoom-pill,.gallery-item:hover .zoom-pill,.map-view:hover .zoom-pill{opacity:1;transform:scale(1.05)}
.case-cover figcaption{margin-top:12px;font-size:13px;color:var(--muted)}
.case-body{display:grid;grid-template-columns:200px minmax(0,1fr);gap:clamp(32px,5vw,88px);padding-top:clamp(48px,6vw,96px)}
.case-toc{position:sticky;top:96px;align-self:start;display:grid;grid-template-columns:2px 1fr;gap:0 16px}
.case-toc>p{grid-column:1/-1;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.case-toc ol{grid-column:2;grid-row:2}
.case-toc a{display:flex;align-items:center;gap:10px;min-height:38px;font-size:15px;color:var(--muted);transition:color .2s,transform .25s var(--ease)}
.case-toc a span{font-size:11px;font-variant-numeric:tabular-nums}
.case-toc a:hover{color:var(--ink)}
.case-toc a.active{color:var(--ink);font-weight:600;transform:translateX(4px)}
.case-toc a.active span{color:var(--accent)}
.toc-progress{grid-column:1;grid-row:2;background:var(--line);border-radius:2px;overflow:hidden}
.toc-progress i{display:block;height:100%;background:var(--accent);transform-origin:top;transform:scaleY(0)}
.case-section{padding-bottom:clamp(56px,7vw,104px);scroll-margin-top:96px}
.case-section h2{font-size:clamp(24px,2.6vw,36px);letter-spacing:-.025em;margin-top:16px}
.lead{margin-top:22px;font-size:clamp(19px,1.75vw,24px);line-height:1.75;letter-spacing:-.01em;max-width:880px}
.callout{margin-top:32px;padding:24px 28px;border-radius:var(--radius);background:var(--accent-soft);border-left:3px solid var(--accent);max-width:880px}
.callout span{font-size:12px;letter-spacing:.12em;color:var(--accent);font-weight:600}
.callout p{margin-top:8px;font-size:17px;color:var(--ink-2)}
.stepper{position:relative;margin-top:32px;display:grid;gap:14px;counter-reset:step}
.stepper::before{content:"";position:absolute;left:27px;top:28px;bottom:28px;width:2px;background:linear-gradient(var(--accent),var(--line))}
.stepper li{position:relative;display:grid;grid-template-columns:56px 1fr;gap:20px;align-items:center;padding:16px 20px 16px 0;border-radius:var(--radius);transition:background .25s}
.stepper li:hover{background:var(--surface)}
.stepper li>span{position:relative;z-index:1;width:56px;height:56px;border-radius:50%;display:grid;place-items:center;background:var(--surface);border:1.5px solid var(--accent);color:var(--accent);font-weight:700;font-size:16px;font-variant-numeric:tabular-nums}
.stepper li p{font-size:18px;line-height:1.6}
.case-section>.segmented{margin-top:20px}
.map-view{position:relative;display:block;width:100%;margin-top:18px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);cursor:zoom-in}
.map-view img{width:100%}
.launch-card{display:grid;grid-template-columns:1fr 1.2fr;gap:32px;align-items:center;margin-top:20px;padding:clamp(20px,3vw,36px);border-radius:24px;background:var(--surface);border:1px solid var(--line)}
.launch-card h2{margin-top:0}
.launch-card p{margin:16px 0 24px;color:var(--ink-2)}
.launch-card img{border-radius:14px}
.demo-window{margin-top:24px;border-radius:20px;border:1px solid var(--line-strong);background:var(--surface);box-shadow:var(--shadow);overflow:hidden}
.demo-window .window-bar{height:40px;background:var(--surface-2);border-bottom:1px solid var(--line);gap:8px;padding:0 16px}
.demo-window .window-bar i{width:11px;height:11px}
.demo-window .window-bar span{margin-left:12px;font-size:13px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.demo-body{padding:clamp(20px,3vw,40px)}
.feature-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:24px}
.feature-card{padding:24px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);display:flex;flex-direction:column;gap:32px;transition:transform .3s var(--ease),border-color .3s}
.feature-card:hover{transform:translateY(-3px);border-color:var(--line-strong)}
.feature-card span{font-size:13px;font-weight:600;color:var(--accent)}
.feature-card p{font-size:17px;line-height:1.55;font-weight:500;margin-top:auto}
.acorn-stage{position:relative;margin-top:20px;height:clamp(280px,36vw,480px);border-radius:24px;overflow:hidden}
.acorn-stage .acorn-bg{width:100%;height:100%;object-fit:cover}
.acorn-stage .acorn-char{right:8%;height:86%}
.gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:24px}
.gallery-item{position:relative;display:block;border-radius:var(--radius);overflow:hidden;background:var(--surface-2);border:1px solid var(--line);cursor:zoom-in;aspect-ratio:16/10}
.gallery-item.is-portrait{aspect-ratio:auto;height:clamp(380px,46vw,620px);padding:24px}
.gallery-item img{width:100%;height:100%;object-fit:cover;object-position:top;transition:transform .8s var(--ease)}
.gallery-item.is-portrait img{object-fit:contain;filter:drop-shadow(0 16px 30px rgba(0,0,0,.18))}
.gallery-item:hover img{transform:scale(1.03)}
.question-block{padding:clamp(32px,5vw,64px);border-radius:28px;background:var(--band);color:var(--band-ink);margin-bottom:0}
.question-block .kicker{color:var(--band-muted)}
.question-block h2{font-size:clamp(26px,3.2vw,46px);line-height:1.35;margin-top:22px;max-width:900px}
.question-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.case-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding-top:clamp(56px,7vw,100px)}
.case-nav-card{display:grid;grid-template-columns:150px 1fr;gap:20px;align-items:center;padding:14px;border-radius:22px;border:1px solid var(--line);background:var(--surface);transition:border-color .3s,transform .3s var(--ease),box-shadow .3s}
.case-nav-card:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:var(--shadow)}
.case-nav-card.is-next{grid-template-columns:1fr 150px;text-align:right}
.case-nav-card.is-next .case-nav-media{order:2}
.case-nav-media{aspect-ratio:4/3;border-radius:14px;overflow:hidden;background:var(--surface-2)}
.case-nav-media img{width:100%;height:100%;object-fit:cover;object-position:top}
.case-nav-card span{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted)}
.case-nav-card span svg{width:16px;height:16px;color:var(--accent)}
.case-nav-card h3{font-size:clamp(18px,1.7vw,24px);letter-spacing:-.02em;margin-top:6px}
.case-nav-card p{font-size:14px;color:var(--muted);margin-top:4px}

/* ---------- CV ---------- */
.cv-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:28px 0}
.cv-actions{display:flex;flex-wrap:wrap;gap:10px}
.cv-sheet{max-width:960px;margin:0 auto;padding:clamp(24px,5vw,64px);border-radius:24px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
.cv-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;padding-bottom:22px;border-bottom:2px solid var(--ink)}
.cv-heading h1{font-size:clamp(36px,5vw,56px);letter-spacing:-.04em}
.cv-heading p{margin-top:8px;font-size:15px;color:var(--ink-2)}
.cv-contact{display:flex;flex-direction:column;align-items:flex-end;font-size:14px;color:var(--muted)}
.cv-contact a{color:var(--ink);font-weight:500}
.cv-bio{margin-top:22px;font-size:15px;line-height:1.85;color:var(--ink-2)}
.cv-sheet section{margin-top:32px}
.cv-sheet section h2{font-size:18px;padding-bottom:10px;margin-bottom:10px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px}
.cv-sheet section h2::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--accent)}
.cv-sheet section>p{font-size:15px;line-height:1.8;margin-top:8px}
.cv-row{display:grid;grid-template-columns:170px 1fr;gap:20px;padding:10px 0}
.cv-row span{font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums}
.cv-row h3{font-size:16px;font-weight:600}
.cv-row p{font-size:14px;color:var(--muted);margin-top:2px}
.cv-paper{padding:10px 0}
.cv-paper h3{font-size:15px;line-height:1.55;font-weight:600}
.cv-paper p{font-size:14px;color:var(--muted);margin-top:3px}
.cv-updated{margin-top:36px;font-size:13px;color:var(--muted)}

/* ---------- Overlays ---------- */
.toast{position:fixed;left:50%;bottom:28px;z-index:300;transform:translate(-50%,20px);padding:12px 20px;border-radius:999px;background:var(--ink);color:var(--bg);font-size:14px;font-weight:500;box-shadow:var(--shadow-lg);opacity:0;pointer-events:none;transition:opacity .25s,transform .35s var(--ease)}
.toast.show{opacity:1;transform:translate(-50%,0)}
dialog{color:var(--ink)}
.palette{width:min(640px,calc(100vw - 24px));max-height:min(560px,80vh);margin:12vh auto auto;padding:0;border:1px solid var(--line-strong);border-radius:20px;background:var(--surface);box-shadow:var(--shadow-lg);overflow:hidden}
.palette::backdrop{background:rgba(10,10,12,.45);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.palette[open]{animation:pop .22s var(--ease)}
@keyframes pop{from{opacity:0;transform:translateY(-8px) scale(.98)}to{opacity:1;transform:none}}
.palette-box{display:flex;flex-direction:column;max-height:inherit}
.palette-input{display:flex;align-items:center;gap:12px;padding:0 18px;border-bottom:1px solid var(--line)}
.palette-input svg{color:var(--muted)}
.palette-input input{flex:1;min-width:0;height:60px;border:0;outline:0;background:none;font:inherit;font-size:17px;color:var(--ink)}
.palette-input input::placeholder{color:var(--muted)}
.palette-list{flex:1;overflow-y:auto;padding:8px}
.palette-group{padding:12px 12px 6px;font-size:12px;letter-spacing:.1em;color:var(--muted)}
.palette-list [role="option"]{display:flex;align-items:center;gap:12px;min-height:48px;padding:6px 12px;border-radius:12px;cursor:pointer}
.palette-list [aria-selected="true"]{background:var(--surface-2)}
.palette-list [aria-selected="true"] .pal-label{color:var(--accent)}
.pal-icon{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;background:var(--surface-2);color:var(--muted);overflow:hidden;flex:none}
.pal-icon img{width:100%;height:100%;object-fit:cover;object-position:top}
.pal-icon svg{width:16px;height:16px}
.pal-label{flex:1;min-width:0;font-size:15px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pal-hint{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:40%}
.palette-empty{padding:28px;text-align:center;color:var(--muted)}
.palette-foot{display:flex;gap:18px;padding:12px 18px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
.palette-foot kbd{margin-right:3px}
.lightbox{width:100vw;height:100vh;max-width:none;max-height:none;margin:0;padding:0;border:0;background:rgba(8,8,10,.92);display:none;align-items:center;justify-content:center}
.lightbox[open]{display:flex;animation:pop .25s var(--ease)}
.lightbox::backdrop{background:transparent}
.lightbox figure{display:flex;flex-direction:column;align-items:center;gap:14px;max-width:calc(100vw - 160px);max-height:calc(100vh - 80px)}
.lightbox img{max-width:100%;max-height:calc(100vh - 130px);object-fit:contain;border-radius:12px}
.lightbox figcaption{color:#cfcfcf;font-size:14px}
.lightbox button{position:absolute;width:48px;height:48px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.1);color:#fff;transition:background .2s}
.lightbox button:hover{background:rgba(255,255,255,.2)}
.lb-close{top:20px;right:20px}
.lb-prev{left:24px;top:50%;margin-top:-24px}
.lb-next{right:24px;top:50%;margin-top:-24px}
.lightbox.single .lb-prev,.lightbox.single .lb-next{display:none}

/* ---------- View transitions ---------- */
::view-transition-old(root){animation:vt-out .22s ease-in both}
::view-transition-new(root){animation:vt-in .38s var(--ease) both}
@keyframes vt-out{to{opacity:0;transform:translateY(-6px)}}
@keyframes vt-in{from{opacity:0;transform:translateY(10px)}}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
  .search-trigger span,.search-trigger kbd{display:none}
  .search-trigger{padding:0;min-width:40px}
  .honor-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .case-meta{grid-template-columns:repeat(2,minmax(0,1fr))}
  .case-body{grid-template-columns:1fr}
  .case-toc{display:none}
  .footer-top{grid-template-columns:1fr 1fr}
  .footer-contact{grid-column:1/-1}
  .ch-num{grid-column:1/3}
  .ch-title{grid-column:3/11}
  .pub-rows li{grid-template-columns:64px 140px minmax(0,1fr)}
  .pub-j{grid-column:3}
}
@media (max-width:960px){
  .works-pin{position:relative;min-height:0;padding-top:clamp(80px,12vw,120px)}
  .works-track{flex-direction:column;width:auto;gap:44px}
  .works .ch-aside{display:none}
  .work-panel,.work-end{--pw:100%}
  .work-end{border-left:0;border-top:1px solid var(--line);padding:24px 0 0}
  .topic-cols{grid-template-columns:1fr}
  .topic-col{padding:28px 0 32px}
  .topic-col+.topic-col{border-left:0;padding-left:0}
}
@media (max-width:860px){
  .site-header{gap:12px}
  .menu-toggle{display:inline-flex}
  .intro{margin-top:-64px}
  .intro-rail{display:none}
  .intro-chapters{width:auto;right:var(--gutter);bottom:84px}
  .chapter-final{width:100%}
  .chapter-year{font-size:clamp(48px,16vw,80px)}
  .intro-hint{display:none}
  .main-nav{position:fixed;inset:64px 0 auto 0;height:calc(100dvh - 64px);flex-direction:column;gap:0;padding:12px var(--gutter) 40px;background:var(--bg);opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .25s,transform .3s var(--ease),visibility .25s}
  .site-header{height:64px}
  .menu-open .main-nav{opacity:1;visibility:visible;transform:none}
  .main-nav a{min-height:64px;font-size:28px;font-weight:700;border-radius:0;border-bottom:1px solid var(--line);padding:0 4px;letter-spacing:-.02em}
  .main-nav a:hover{background:none}
  .main-nav a[aria-current]::after{left:auto;right:8px;bottom:50%;width:8px;height:8px;margin:0 0 -4px}
  .menu-open .menu-open{display:none}
  .menu-open .menu-close{display:inline-flex}
  .menu-open.site-header{background:var(--bg)}
  .identity-text small{display:none}
  .facts{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:36px}
  .chapter-head{grid-template-columns:1fr;gap:10px}
  .ch-num,.ch-title,.ch-aside,.chapter-head:not(:has(.ch-aside)) .ch-title{grid-column:1}
  .ch-aside{justify-self:start;align-items:flex-start}
  .intent{grid-template-columns:1fr}
  .intent-list,.intent-contact{grid-column:1}
  .intent-contact{margin-top:32px}
  .braid-head{display:none}
  .braid-body{height:auto!important;min-height:0!important;margin-top:0;padding-left:28px}
  .braid-spine{left:5px}
  .tick,.playhead,.spine-fill{display:none}
  .braid .b-item,.braid .b-item.lane-edu,.braid .b-item.lane-work,.braid .b-band{position:relative;top:auto;left:auto;right:auto;height:auto;width:auto;margin:0 0 32px}
  .b-item::before{content:"";position:absolute;left:-28px;top:6px;width:11px;height:11px;border-radius:50%;background:var(--ink)}
  .b-item.lane-edu::before{background:var(--accent)}
  .b-bar{display:none}
  .b-card,.lane-edu .b-card{max-width:none;padding:0;margin:0;text-align:left;transform:none;opacity:1!important}
  .b-lane{display:inline-block;margin-bottom:6px;font-size:11px;letter-spacing:.14em;color:var(--muted)}
  .lane-edu .b-lane{color:var(--accent)}
  .b-band{background:none}
  .b-band span{position:static;transform:none;display:inline-block;writing-mode:horizontal-tb;padding:5px 12px}
  .page-intro{grid-template-columns:1fr}
  .topic-row{grid-template-columns:40px minmax(0,1fr)}
  .topic-side{grid-column:2}
    .feature-cards{grid-template-columns:1fr}
  .feature-card{gap:16px}
  .launch-card{grid-template-columns:1fr}
  .case-nav{grid-template-columns:1fr}
}
@media (max-width:640px){
  body{font-size:15px}
  .chapter h2{font-size:26px;margin-top:10px}
  .chapter-final h1{font-size:clamp(44px,13vw,60px)}
  .chapter-final .hero-actions .button{flex:1 1 auto;min-height:44px}
  .chapter>p:last-child{font-size:14px}
  .chapter-final>p:not(.chapter-year){display:none}
  .ch-num{font-size:64px}
  .fact-num{font-size:56px}
  .graph-stage{min-height:380px}
  .graph-head{padding:12px 14px}
  .graph-tip{width:220px}
  .panel-num{font-size:34px}
  .panel-go{display:none}
  .pub-rows li{grid-template-columns:1fr;gap:4px}
  .pub-t,.pub-j{grid-column:1}
  .link-chip{max-width:100%}
  .honor-grid{grid-template-columns:1fr}
  .honor{min-height:0;gap:16px}
  .footer-top{grid-template-columns:1fr}
  .footer-hint{display:none}
  .case-top .kbd-hint{display:none}
  .case-meta{grid-template-columns:1fr}
  .cover-button{border-radius:20px;height:clamp(280px,80vw,460px)}
  .case-yici .cover-button,.case-live-analysis .cover-button{height:520px}
  .stepper li{grid-template-columns:44px 1fr;gap:14px}
  .stepper li>span{width:44px;height:44px;font-size:14px}
  .stepper::before{left:21px}
  .stepper li p{font-size:16px}
  .gallery{grid-template-columns:1fr}
  .case-nav-card,.case-nav-card.is-next{grid-template-columns:96px 1fr;text-align:left}
  .case-nav-card.is-next .case-nav-media{order:0}
  .cv-row{grid-template-columns:1fr;gap:2px}
  .cv-contact{align-items:flex-start}
  .page-cta{padding:24px}
  .lightbox figure{max-width:calc(100vw - 24px)}
  .lb-prev,.lb-next{top:auto;bottom:24px;margin:0}
  .phone{width:44%;border-radius:24px;border-width:5px}
}
@media (max-width:380px){
  .lang-switch{padding:0 8px}
  .identity-text strong{font-size:16px}
  .header-tools{gap:4px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}

@media print{
  @page{size:A4;margin:15mm}
  :root{--bg:#fff;--surface:#fff;--ink:#111;--ink-2:#333;--muted:#555;--line:#ddd;--outline:#999}
  .site-header,.site-footer,.cv-toolbar,.skip-link,.scroll-progress,.toast,.cursor-label{display:none!important}
  body{font-size:10pt;background:#fff}
  .motion [data-reveal]{opacity:1!important;transform:none!important}
  .page{padding:0}
  .cv-sheet{margin:0;padding:0;border:0;box-shadow:none;max-width:none}
  .cv-heading h1{font-size:28pt}
  .cv-sheet section{margin-top:16px}
  .cv-sheet section h2{font-size:12pt;break-after:avoid}
  .cv-bio,.cv-sheet section>p{font-size:9.5pt;line-height:1.65}
  .cv-row{grid-template-columns:120px 1fr;padding:5px 0}
  .cv-row h3,.cv-paper h3{font-size:9.5pt}
  .cv-row p,.cv-row span,.cv-paper p{font-size:8.5pt}
  .cv-paper,.cv-row{break-inside:avoid}
  a{color:inherit}
}