:root{
    --bg:#1b212c; --bg2:#232a37; --panel:#2b333f;
    --ink:#f2efe9; --dim:#b6bec9; --line:rgba(242,239,233,.16);
    --accent:#37e0b0; --accent2:#1f7f66;
    --ease:cubic-bezier(.19,1,.22,1); --ease-out:cubic-bezier(.16,1,.3,1);
    --serif:"Iowan Old Style","Apple Garamond",Georgia,"Times New Roman",serif;
    --sans:"Inter","Helvetica Neue",Arial,system-ui,sans-serif;
    --cjk:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",sans-serif;
    --mono:ui-monospace,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
    /* radius scale (demos widgets): mark 2 · well 4 · control 7 · card 16 */
    --r-mark:2px; --r-well:4px; --r-ctl:7px; --r-card:16px;
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{background:
      radial-gradient(1100px 720px at 82% 0%, rgba(55,224,176,.11), transparent 56%),
      radial-gradient(940px 740px at 2% 44%, rgba(80,150,220,.07), transparent 56%),
      radial-gradient(1040px 840px at 99% 92%, rgba(55,224,176,.09), transparent 56%),
      var(--bg);
    background-repeat:no-repeat;color:var(--ink);font-family:var(--sans);line-height:1.5;
    -webkit-font-smoothing:antialiased;overflow-x:hidden}
  body.zh{font-family:var(--cjk)}
  body.zh .display{letter-spacing:.02em}
  a{color:inherit;text-decoration:none}
  .wrap{max-width:1240px;margin:0 auto;padding:0 28px}
  .display{font-weight:800;letter-spacing:-.02em;line-height:.98}
  .eyebrow{font-size:12px;letter-spacing:.34em;text-transform:uppercase;color:var(--accent);font-weight:600}
  section{position:relative}
  .reveal{opacity:0;transform:translateY(28px);filter:blur(5px);
    transition:opacity 1s var(--ease),transform 1s var(--ease),filter 1s var(--ease)}
  .reveal.in{opacity:1;transform:none;filter:none}
  /* opt-in directional / scale variants for richer scroll choreography */
  .reveal.lift{transform:translateY(52px)}
  .reveal.from-l{transform:translateX(-52px)}
  .reveal.from-r{transform:translateX(52px)}
  .reveal.zoom{transform:translateY(30px) scale(.955)}
  .reveal.in{transform:none} /* re-assert after variants; loses to later :hover rules so card hovers still lift */
  /* SCROLL NERVE-SPINE — page-long nerve; a pulse + filling rail track scroll, nodes fire as passed */
  .spine{position:fixed;left:22px;top:0;height:100vh;width:14px;z-index:30;pointer-events:none;display:none}
  @media(min-width:1280px){.spine{display:block}}
  .spine-rail{position:absolute;left:6px;top:0;width:2px;height:100%;background:rgba(242,239,233,.09);border-radius:2px}
  .spine-fill{position:absolute;left:6px;top:0;width:2px;height:0;background:linear-gradient(180deg,rgba(55,224,176,.12),var(--accent));border-radius:2px}
  .spine-node{position:absolute;left:3px;width:8px;height:8px;border-radius:50%;background:var(--bg2);border:1.5px solid rgba(55,224,176,.45);transform:translateY(-50%);transition:background .35s var(--ease),border-color .35s var(--ease),box-shadow .35s var(--ease)}
  .spine-node.on{background:var(--accent);border-color:var(--accent);box-shadow:0 0 9px rgba(55,224,176,.85)}
  .spine-pulse{position:absolute;left:1px;width:12px;height:12px;border-radius:50%;background:var(--accent);transform:translateY(-50%);box-shadow:0 0 12px 3px rgba(55,224,176,.6)}
  /* ambient neural mesh — one faint drifting network behind the lower page */
  .mesh-bg{position:fixed;inset:0;z-index:0;pointer-events:none}
/* full-page scroll-driven 3D journey canvas (homepage — journey3d.js) */
.journey-bg{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none;opacity:0;transition:opacity 1.3s var(--ease)}
.journey-bg.ready{opacity:.9}

  /* NAV */
  header.nav{position:fixed;top:0;left:0;right:0;z-index:50;backdrop-filter:blur(12px);
    background:rgba(27,33,44,.62);border-bottom:1px solid var(--line)}
  /* brand left, everything else right-aligned as one cluster — with only two
     nav links, the old space-between left them floating in the centre */
  .nav-in{display:flex;align-items:center;height:68px}
  .brand{font-weight:800;letter-spacing:.18em;font-size:18px;margin-right:auto}
  .brand small{color:var(--accent);font-weight:700;margin-left:8px;letter-spacing:.1em}
  /* neural synapse mark — Aether + matrix, the medium that connects intelligence */
  .brand-mark{width:27px;height:27px;vertical-align:-8px;margin-right:10px;object-fit:contain}
  .nav-links{display:flex;gap:30px;align-items:center;margin-right:34px}
  .nav-links a{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--dim);transition:color .2s}
  .nav-home{display:none}   /* burger-menu only — the brand mark is "home" on desktop */
  .nav-links a:hover{color:var(--ink)}
  .nav-right{display:flex;gap:14px;align-items:center}
  .lang{display:flex;border:1px solid var(--line);border-radius:7px;overflow:hidden}
  .lang button{background:none;border:0;color:var(--dim);font:inherit;font-size:12px;letter-spacing:.1em;
    padding:7px 12px;cursor:pointer;transition:.2s}
  .lang button.active{background:rgba(55,224,176,.14);color:var(--accent);font-weight:600}
  .btn{display:inline-block;background:rgba(55,224,176,.1);color:var(--accent);font-weight:600;font-size:13px;
    border:1px solid rgba(55,224,176,.45);letter-spacing:.08em;padding:11px 20px;border-radius:7px;
    transition:background .2s,border-color .2s,box-shadow .2s;text-transform:uppercase}
  .btn:hover{background:rgba(55,224,176,.18);border-color:var(--accent);box-shadow:0 0 22px rgba(55,224,176,.22)}
  .btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
  .btn.ghost:hover{background:rgba(242,239,233,.05);border-color:rgba(242,239,233,.4);box-shadow:none}
  .btn:focus-visible,.lang button:focus-visible{outline:1px solid var(--accent);outline-offset:2px}
  .nav-burger{display:none}
  @media(max-width:820px){
    .nav-in{height:auto;min-height:68px;flex-wrap:wrap}
    .brand{order:1}
    .nav-burger{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;background:none;border:0;cursor:pointer;padding:14px 11px;margin-left:auto;order:2}
    .nav-burger span{display:block;width:22px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s var(--ease),opacity .2s}
    header.nav.open .nav-burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
    header.nav.open .nav-burger span:nth-child(2){opacity:0}
    header.nav.open .nav-burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
    .nav-links,.nav-right{display:none;width:100%}
    .nav-links{order:3}.nav-right{order:4}
    .nav-div{display:none}
    .nav-home{display:block}
    header.nav.open .nav-links{display:flex;flex-direction:column;gap:4px;width:100%;padding:12px 0 8px;margin-right:0}
    /* full-width 44px-tall tap targets (the bare text rows were ~23px) */
    header.nav.open .nav-links a{display:block;width:100%;text-align:center;font-size:15px;letter-spacing:.06em;padding:12px 0}
    header.nav.open .nav-right{display:flex;width:100%;justify-content:space-between;align-items:center;gap:14px;padding:12px 0 20px;border-top:1px solid var(--line);margin-top:6px}
    /* solid sheet + a bottom edge so the page can't bleed into the open menu */
    header.nav.open{background:rgba(27,33,44,.98);border-bottom:1px solid var(--line);
      box-shadow:0 24px 48px -16px rgba(0,0,0,.75)}
  }

  /* HERO — flex column with a stable min-height so a language toggle
     (very different EN vs CJK line counts) doesn't jump the section height */
  .hero{min-height:100svh;display:flex;flex-direction:column;position:relative;overflow:hidden}
  .hero::before{content:"";position:absolute;inset:0;z-index:0;
    background:
      radial-gradient(680px 420px at 78% 12%, rgba(55,224,176,.16), transparent 60%),
      radial-gradient(620px 520px at 10% 90%, rgba(31,127,102,.18), transparent 60%);
    pointer-events:none}
  .hero .wrap{position:relative;z-index:2;flex:1;display:flex;flex-direction:column;justify-content:center;padding:118px 28px 30px}
  /* interactive WebGL hero backdrop */
  .hero-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0;pointer-events:none;display:block;
    opacity:0;transition:opacity 1.3s var(--ease)}
  .hero-canvas.ready{opacity:.85}
  /* left-side scrim keeps the headline + lede legible over the particles */
  .hero::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
    background:linear-gradient(90deg, var(--bg) 0%, rgba(27,33,44,.94) 30%, rgba(27,33,44,.6) 52%, rgba(27,33,44,.18) 72%, transparent 90%)}
  .hero .marquee{position:relative;z-index:2}
  .hero h1{font-size:clamp(40px,6.6vw,94px);max-width:17ch}
  .hero h1 .accent{color:var(--accent)}
  /* CJK glyphs are full-width + heavier — scale the headline down and give it a
     real line-height so the zh hero still fits inside one viewport (no clipping) */
  body.zh .hero h1{font-size:clamp(30px,4.6vw,64px);line-height:1.16;max-width:15ch}
  body.zh .hero .lede{margin:22px 0 28px}
  .hero .lede{color:var(--dim);font-size:clamp(16px,1.6vw,20px);max-width:48ch;margin:28px 0 32px}
  .hero-cta{display:flex;gap:16px;flex-wrap:wrap;align-items:center}

  /* MARQUEE */
  .marquee{margin-top:52px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    overflow:hidden;white-space:nowrap;padding:16px 0}
  .marquee .track{display:inline-flex;gap:48px;animation:scroll 26s linear infinite}
  .marquee span{font-size:14px;letter-spacing:.2em;text-transform:uppercase;color:var(--dim)}
  .marquee span::before{content:"/ ";color:var(--accent)}
  @keyframes scroll{to{transform:translateX(-50%)}}

  /* STATEMENT */
  .statement{padding:120px 0}
  .statement .eyebrow{margin-bottom:28px}
  .statement p{font-family:var(--serif);font-size:clamp(20px,2.6vw,32px);line-height:1.4;
    font-weight:500;max-width:20ch;letter-spacing:-.01em}
  body.zh .statement p{font-family:var(--cjk);font-weight:600;line-height:1.3}
  .statement .accent{color:var(--accent)}
  /* 不通则痛 echo line — quiet punchline under the statement */
  .statement .st-echo{margin-top:24px;font-family:var(--serif);font-style:italic;font-size:16.5px;color:var(--dim)}
  body.zh .statement .st-echo{font-family:var(--cjk);font-style:normal;letter-spacing:.32em}

  /* METRICS */
  .metrics{padding:60px 0 110px;border-top:1px solid var(--line)}
  .metrics-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .metric .num{font-size:clamp(32px,4.2vw,54px);font-weight:800;letter-spacing:-.03em;line-height:1}
  .metric .num .suf{color:var(--accent)}
  .metric .lab{color:var(--dim);font-size:13px;letter-spacing:.1em;text-transform:uppercase;margin-top:12px}
  @media(max-width:820px){.metrics-grid{grid-template-columns:repeat(2,1fr);gap:40px 24px}}

  /* SECTION HEADER */
  .sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:48px;flex-wrap:wrap}
  .sec-head h2{font-size:clamp(24px,3.2vw,38px)}
  .sec-head p{color:var(--dim);max-width:36ch}

  /* SERVICES — flat hairline index (deliberately NOT the card language the
     corridor office cards use: no radius, no gradient, numbered rows) */
  .services{padding:110px 0;border-top:1px solid var(--line)}
  /* one channel, four points: a vertical meridian runs the number column; each
     row's acupoint lights in sequence as the rows reveal (same vocabulary as
     .spine-node). Numbers are indented to clear the channel. */
  .svc-grid{counter-reset:svc;position:relative}
  .svc-grid::before{content:"";position:absolute;left:3px;top:14px;bottom:14px;width:1px;
    background:linear-gradient(180deg,transparent,rgba(55,224,176,.25) 8%,rgba(55,224,176,.25) 92%,transparent)}
  .svc{position:relative;display:grid;grid-template-columns:56px 240px 1fr;gap:0 34px;align-items:start;
    padding:34px 0 30px;border-top:1px solid var(--line);transition:background .3s}
  .svc:last-child{border-bottom:1px solid var(--line)}
  .svc::before{counter-increment:svc;content:"0" counter(svc);grid-row:1 / span 3;
    font-family:"Courier New",monospace;font-size:13px;color:var(--accent);letter-spacing:.14em;padding-top:5px;padding-left:18px}
  .svc::after{content:"";position:absolute;left:0;top:40px;width:7px;height:7px;border-radius:50%;
    background:var(--bg2);border:1.5px solid rgba(55,224,176,.45);
    transition:background .4s var(--ease),border-color .4s var(--ease),box-shadow .4s var(--ease)}
  .svc.in::after{background:var(--accent);border-color:var(--accent);box-shadow:0 0 9px rgba(55,224,176,.85)}
  .svc:nth-of-type(1).in::after{transition-delay:.1s}
  .svc:nth-of-type(2).in::after{transition-delay:.3s}
  .svc:nth-of-type(3).in::after{transition-delay:.5s}
  .svc:nth-of-type(4).in::after{transition-delay:.7s}
  .svc .k .svc-seal{display:inline-block;font-style:normal;font-family:var(--cjk);font-size:12px;font-weight:400;
    color:var(--dim);border:1px solid rgba(242,239,233,.22);border-radius:3px;padding:1px 5px;margin-left:9px;
    letter-spacing:0;text-transform:none;vertical-align:1px;opacity:.75;
    transition:color .25s var(--ease),border-color .25s var(--ease)}
  .svc:hover .k .svc-seal{color:var(--accent);border-color:rgba(55,224,176,.45)}
  .svc:hover{background:rgba(255,255,255,.02)}
  .svc:hover h3{color:var(--accent)}
  .svc .k{grid-column:2;font-size:11px;color:var(--dim);letter-spacing:.18em;text-transform:uppercase;font-weight:700}
  .svc h3{grid-column:2;font-size:23px;margin:10px 0 0;letter-spacing:-.01em;transition:color .25s var(--ease)}
  .svc p{grid-column:3;grid-row:1 / span 2;color:var(--dim);font-size:15px;line-height:1.6;padding-top:3px}
  .svc .deliver{grid-column:3;margin-top:14px;font-size:13px;color:var(--ink)}
  .svc .deliver b{color:var(--accent)}
  @media(max-width:820px){
    .svc{grid-template-columns:44px 1fr;gap:0 14px;padding:26px 0 22px}
    .svc::before{grid-row:1 / span 4;padding-top:3px;padding-left:16px}
    .svc::after{top:31px}
    .svc .k{grid-column:2}
    .svc h3{grid-column:2;font-size:20px;margin:8px 0 0}
    .svc p{grid-column:2;grid-row:auto;margin-top:10px;padding-top:0;font-size:14px}
    .svc .deliver{grid-column:2;margin-top:10px}
  }

  /* TESTIMONIAL */
  .quote{padding:120px 0;border-top:1px solid var(--line);text-align:center}
  .quote .q{font-family:var(--serif);font-size:clamp(18px,2.4vw,28px);line-height:1.5;max-width:24ch;margin:0 auto 28px;min-height:2.6em}
  body.zh .quote .q{font-family:var(--cjk);line-height:1.5}
  .quote .who{color:var(--dim);font-size:14px;letter-spacing:.06em}
  .quote .who b{color:var(--ink)}
  .dots{display:flex;gap:8px;justify-content:center;margin-top:34px}
  .dots i{width:7px;height:7px;border-radius:50%;background:var(--line);cursor:pointer;transition:.2s}
  .dots i.on{background:var(--accent);transform:scale(1.2)}

  /* CLOSER */
  .closer{padding:120px 0 60px;border-top:1px solid var(--line);text-align:center;overflow:hidden}
  .closer .big{font-size:clamp(44px,12vw,170px);line-height:.92;font-weight:800;letter-spacing:-.03em}
  .closer .big .accent{color:var(--accent)}
  .closer .cta{margin-top:48px}

  /* FOOTER */
  footer{position:relative;z-index:1;border-top:1px solid var(--line);padding:60px 0 50px;color:var(--dim);background:rgba(27,33,44,.8)}
  .foot-grid{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap}
  .foot-grid h4{color:var(--ink);font-size:13px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:16px}
  .foot-col a,.foot-col div{display:block;font-size:14px;margin-bottom:9px;color:var(--dim)}
  .foot-col .foot-note{margin-top:10px;font-size:12px;opacity:.7;line-height:1.5}
  .foot-col a:hover{color:var(--ink)}
  .foot-bottom{margin-top:48px;padding-top:24px;border-top:1px solid var(--line);font-size:12px;letter-spacing:.06em;
    display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}


/* ===== KINETIC HEADINGS (Blux-style masked rise) ===== */
.kin-mask{display:block;overflow:hidden;padding-bottom:.18em;margin-bottom:-.18em}
.kinetic{transform:translateY(110%);transition:transform 1.1s var(--ease);will-change:transform}
.kinetic.in{transform:translateY(0)}

/* ===== TESTIMONIAL CROSSFADE ===== */
.quote .q,.quote .who{opacity:0;transition:opacity .5s var(--ease)}
.quote .q.show,.quote .who.show{opacity:1}

@media(prefers-reduced-motion:reduce){
  .reveal,.kinetic{opacity:1!important;transform:none!important;filter:none!important;transition:none!important}
  .quote .q,.quote .who{opacity:1!important}
  .svc::after{transition:none!important}
  .svc.svc-open p,.svc.svc-open .deliver{animation:none!important}
}

/* ===== NAV — distinguish in-page sections from standalone pages ===== */
.nav-div{width:1px;height:18px;background:var(--line);margin:0 6px;align-self:center;flex:0 0 auto}
.nav-links a.nav-page{color:var(--ink);display:inline-flex;align-items:center;gap:5px}
.nav-links a.nav-page::after{content:"↗";font-size:10px;color:var(--accent);letter-spacing:0}
.nav-links a.nav-page:hover{color:var(--accent)}
.nav-links a.nav-page.active{color:var(--accent)}

/* ===== UK + CHINA PRESENCE MAP ===== */
.corridor{padding:100px 0;border-top:1px solid var(--line)}
.corridor-map{position:relative;margin:14px 0 30px}
.cmap{width:100%;height:auto;display:block;max-height:440px;overflow:visible}
.cmap-land{fill:rgba(55,224,176,.07);stroke:rgba(55,224,176,.38);stroke-width:1.2;transition:fill .3s var(--ease),stroke .3s var(--ease)}
.cmap-region{cursor:pointer}
.cmap-region.on .cmap-land{fill:rgba(55,224,176,.18);stroke:var(--accent)}
.cmap-link{fill:none;stroke:rgba(55,224,176,.26);stroke-width:1.5;stroke-dasharray:4 8}
.corridor.go .cmap-link{animation:cflow 1.6s linear infinite}
@keyframes cflow{to{stroke-dashoffset:-24}}
.cmap-signal{fill:#c6ffec;filter:drop-shadow(0 0 5px rgba(55,224,176,.95))}
@media(prefers-reduced-motion:reduce){.cmap-signal{display:none}}
.cmap-city{cursor:pointer}
.cmap-city .ring{fill:none;stroke:var(--accent);stroke-width:1.5;opacity:0}
.corridor.go .cmap-city .ring{animation:cpulse 2.8s ease-out infinite}
@keyframes cpulse{0%{r:7px;opacity:.6}100%{r:22px;opacity:0}}
.cmap-city .core{fill:var(--accent);stroke:var(--bg);stroke-width:2;transition:filter .3s var(--ease)}
.cmap-city.on .core{filter:drop-shadow(0 0 6px rgba(55,224,176,.9))}
.cmap-city .lbl{fill:var(--ink);font-size:15px;font-weight:700;font-family:var(--sans)}
.cmap-city .sub{fill:var(--dim);font-size:10px;font-family:"Courier New",monospace;letter-spacing:.08em}
/* 子/午 channel-end glyphs — graphic marks (both languages), lit on region hover */
.cmap-hz{fill:var(--dim);opacity:.55;font-size:17px;font-family:var(--cjk);
  transition:fill .3s var(--ease),opacity .3s var(--ease)}
.cmap-hz.on{fill:var(--accent);opacity:.9}
.cmap-cap{display:none}   /* mobile-only live-clock caption under the map */
.cstats{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin:0 0 26px}
.cstat{background:var(--bg);padding:18px 22px 16px}
.cstat b{display:block;font-family:"Courier New",monospace;font-size:21px;color:var(--accent);font-weight:400;letter-spacing:.03em;margin-bottom:4px}
.cstat b i{font-style:normal;color:var(--dim)}
.cstat span{font-size:12.5px;color:var(--dim);line-height:1.45;display:block}
@media(max-width:760px){.cstats{grid-template-columns:1fr}.cstat{display:flex;align-items:baseline;gap:14px;padding:13px 18px}.cstat b{margin:0;flex:0 0 auto;font-size:17px}}
.cdir-top{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.clock{font-family:"Courier New",monospace;font-size:11.5px;color:var(--ink);opacity:.8;letter-spacing:.06em;white-space:nowrap}
.clock em{font-style:normal;color:var(--accent)}
.coord{font-family:"Courier New",monospace;font-size:10.5px;color:var(--dim);letter-spacing:.06em;margin:-8px 0 14px}
.corridor-detail{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.cdir{border:1px solid var(--line);border-radius:16px;padding:28px;background:linear-gradient(180deg,var(--panel),var(--bg));transition:border-color .3s var(--ease),transform .3s var(--ease);cursor:pointer}
.cdir:hover{transform:translateY(-3px)}
.cdir.on{border-color:var(--accent);box-shadow:0 0 0 1px rgba(55,224,176,.3)}
.cdir .k{font-family:"Courier New",monospace;font-size:11.5px;color:var(--accent);letter-spacing:.14em;text-transform:uppercase}
.cdir h3{font-size:20px;margin:10px 0 14px;letter-spacing:-.01em}
.cdir ul{list-style:none}
.cdir li{color:var(--dim);font-size:14px;line-height:1.6;padding-left:18px;position:relative;margin:8px 0}
.cdir li::before{content:"·";position:absolute;left:6px;color:var(--accent);font-weight:700}
@media(max-width:760px){.corridor-detail{grid-template-columns:1fr}}

/* ===== AI-READINESS SELF-CHECK ===== */
.readiness{padding:100px 0;border-top:1px solid var(--line)}
.rdz{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:20px;background:linear-gradient(180deg,var(--panel),var(--bg));padding:46px;min-height:340px;box-shadow:0 30px 70px -46px rgba(0,0,0,.85)}
.rdz-progress{position:absolute;left:0;top:0;height:3px;background:var(--accent);width:0;transition:width .45s var(--ease)}
.rdz-q .qmeta{font-family:"Courier New",monospace;font-size:12px;color:var(--accent);letter-spacing:.1em;margin-bottom:14px}
.rdz-q h3{font-size:clamp(22px,2.6vw,30px);font-weight:800;letter-spacing:-.01em;line-height:1.2;margin-bottom:26px;max-width:26ch}
.rdz-opts{display:flex;flex-direction:column;gap:12px;max-width:640px}
.rdz-opt{text-align:left;background:rgba(255,255,255,.02);border:1px solid var(--line);border-radius:12px;padding:15px 18px;cursor:pointer;font:inherit;font-size:15px;color:var(--ink);display:flex;align-items:center;gap:14px;transition:border-color .25s var(--ease),transform .25s var(--ease)}
.rdz-opt:hover{border-color:var(--accent);transform:translateX(4px)}
.rdz-opt .mk{width:20px;height:20px;border-radius:50%;border:1.5px solid var(--line);flex:0 0 auto;transition:border-color .25s}
.rdz-opt:hover .mk{border-color:var(--accent)}
.rdz-q,.rdz-result{opacity:0;transform:translateY(12px)}
.rdz-q.in,.rdz-result.in{opacity:1;transform:none;transition:opacity .45s var(--ease),transform .45s var(--ease)}
.rdz-result{text-align:center}
.rdz-gauge{position:relative;width:150px;height:150px;margin:0 auto 22px}
.rdz-gauge svg{transform:rotate(-90deg)}
.rdz-gauge .gtrack{fill:none;stroke:rgba(255,255,255,.08);stroke-width:10}
.rdz-gauge .gfill{fill:none;stroke:var(--accent);stroke-width:10;stroke-linecap:round;transition:stroke-dashoffset 1.1s var(--ease)}
.rdz-gauge .score{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:38px;font-weight:800;color:var(--accent)}
.rdz-result .lvl{font-size:clamp(22px,2.6vw,30px);font-weight:800;margin-bottom:10px;letter-spacing:-.01em}
.rdz-result .msg{color:var(--dim);font-size:15.5px;line-height:1.65;max-width:50ch;margin:0 auto 26px}
.rdz-result .actions{display:flex;gap:16px;justify-content:center;align-items:center;flex-wrap:wrap}
.rdz-restart{background:none;border:0;color:var(--dim);font:inherit;font-size:13px;cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.rdz-restart:hover{color:var(--accent)}

/* ===== CONTACT ===== */
.contact{padding:100px 0;border-top:1px solid var(--line)}
/* single column since the "What happens next" card was removed (2026-08) —
   the info block keeps its own max-width */
.contact-grid{display:grid;grid-template-columns:1fr;gap:60px;align-items:center}
.contact-info{max-width:520px}
.contact-info h2{font-size:clamp(24px,2.8vw,36px);font-weight:800;letter-spacing:-.02em;line-height:1.08;margin-bottom:18px}
.contact-info h2 .accent{color:var(--accent)}
.contact-info p{color:var(--dim);font-size:15.5px;line-height:1.7;margin-bottom:26px;max-width:38ch}
.contact-info .ci-brief{display:none}   /* mobile-only short promise line */
.contact-info .ci-row{display:flex;align-items:baseline;gap:12px;color:var(--ink);font-size:14px;margin:11px 0}
.contact-info .ci-row .ic{color:var(--accent);font-family:"Courier New",monospace;font-size:11px;letter-spacing:.06em;min-width:64px}
/* "what happens next" — balances the section and adds substance */
.contact-next{border:1px solid var(--line);border-radius:18px;padding:36px 34px;
  background:linear-gradient(180deg,var(--panel),var(--bg));box-shadow:0 30px 70px -52px rgba(0,0,0,.85)}
.contact-next .cn-k{font-family:"Courier New",monospace;font-size:11.5px;color:var(--accent);
  letter-spacing:.16em;text-transform:uppercase;margin-bottom:22px}
.cn-steps{list-style:none;display:flex;flex-direction:column;gap:4px}
.cn-steps li{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start;
  padding:16px 0;border-top:1px solid var(--line)}
.cn-steps li:first-child{border-top:0;padding-top:0}
.cn-n{font-family:"Courier New",monospace;font-size:12px;color:var(--accent);font-weight:700;
  letter-spacing:.06em;padding-top:2px}
.cn-steps h4{font-size:16px;font-weight:700;letter-spacing:-.01em;margin-bottom:5px}
.cn-steps p{color:var(--dim);font-size:14px;line-height:1.6}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr;gap:40px}.contact-info{max-width:none}}

/* ===== AI PLUMBING · 通脉 — new-practice banner (homepage, after services) ===== */
.plumb-banner{padding:0 0 110px}
.plumb-banner .card{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:34px;
  align-items:center;border:1px solid rgba(55,224,176,.32);border-radius:18px;padding:36px 42px;
  background:linear-gradient(115deg,rgba(55,224,176,.08),transparent 55%);overflow:hidden;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease)}
.plumb-banner .card:hover{border-color:var(--accent);box-shadow:0 0 40px -18px rgba(55,224,176,.5)}
.plumb-banner .k{font-family:"Courier New",monospace;font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--accent)}
.plumb-banner h3{font-size:clamp(21px,2.5vw,30px);font-weight:800;letter-spacing:-.01em;
  line-height:1.25;margin:12px 0 10px}
.plumb-banner h3 .accent{color:var(--accent)}
.plumb-banner p{color:var(--dim);font-size:14.5px;line-height:1.7;max-width:56ch}
.plumb-banner .pb-art{display:flex;flex-direction:column;align-items:center;gap:18px}
.plumb-banner .pb-art svg{width:250px;display:block}
.pb-flow{stroke-dasharray:9 7;animation:pbflow 1.5s linear infinite}
@keyframes pbflow{to{stroke-dashoffset:-32}}
@media(prefers-reduced-motion:reduce){.pb-flow{animation:none}}

/* ===== MOBILE SLIMMING (≤760px) — kept at end of file to win source order ===== */
@media(max-width:760px){
  .wrap{padding:0 20px}
  .hero{min-height:auto}
  /* give the particle logo the top ~40svh to itself: content starts below it,
     so the constellation reads as the opening shot and the statement leaves
     the first screen */
  .hero .wrap{padding:42svh 20px 10px}
  .hero h1{font-size:clamp(31px,9vw,40px)}
  .hero .lede{margin:18px 0 24px}
  .eyebrow{letter-spacing:.2em;font-size:11px}
  .marquee{margin-top:30px;padding:12px 0}
  .statement{padding:64px 0}
  .statement .eyebrow{margin-bottom:18px}
  /* the 20ch cap is a desktop measure — let the defining sentence own the line */
  .statement p{max-width:none;font-size:22px}
  .metrics{padding:36px 0 44px}
  /* three stats side by side — one compact strip, number over label */
  .metrics-grid{grid-template-columns:repeat(3,1fr);gap:12px}
  .metric{text-align:center}
  .metric .num{font-size:30px}
  .metric .lab{margin-top:7px;font-size:10px;letter-spacing:.08em;line-height:1.4}
  .sec-head{margin-bottom:28px}
  .services{padding:64px 0}
  /* services accordion: rows collapse to number+kicker+title; one open at a
     time (app.js toggles .svc-open; first row opens by default). The open
     row's acupoint is the lit one — 得气 = expanded. */
  .svc{padding:18px 0 16px;cursor:pointer}
  .svc p,.svc .deliver{display:none}
  .svc.svc-open{padding-bottom:22px}
  .svc.svc-open p,.svc.svc-open .deliver{display:block;animation:svcIn .35s var(--ease) both}
  @keyframes svcIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
  .svc::after{top:24px}
  .svc h3{position:relative;padding-right:26px}
  .svc h3::after{content:"";position:absolute;right:2px;top:50%;width:8px;height:8px;
    border-right:1.5px solid var(--dim);border-bottom:1.5px solid var(--dim);
    transform:translateY(-70%) rotate(45deg);transition:transform .3s var(--ease),border-color .3s var(--ease)}
  .svc.svc-open h3::after{transform:translateY(-30%) rotate(225deg);border-color:var(--accent)}
  /* only the open row's dot is lit (overrides the desktop reveal sequence) */
  .svc.in::after{background:var(--bg2);border-color:rgba(55,224,176,.45);box-shadow:none;transition-delay:0s}
  .svc.svc-open::after{background:var(--accent);border-color:var(--accent);box-shadow:0 0 9px rgba(55,224,176,.85)}
  .quote{padding:70px 0}
  .dots{margin-top:24px}
  .corridor{padding:60px 0}
  /* the map carries the section on phones (office cards hidden below); the SVG
     scales to ~1/3, so labels/dots/strokes are bumped in viewBox units to stay
     legible — r/translate work as CSS geometry properties on SVG elements */
  .corridor-detail{display:none}
  .corridor-map{margin:8px 0 10px}
  /* the boxed stats table fought the airy map — replace it with a single
     live-clock caption that reads as the map's legend (the GMT↔GMT+8 relay,
     made concrete: the two offices' local times, ticking) */
  .cstats{display:none}
  .cmap-cap{display:flex;justify-content:center;align-items:baseline;gap:12px;
    margin:-4px 0 6px;font-family:"Courier New",monospace;font-size:13.5px;
    color:var(--dim);letter-spacing:.04em}
  .cmap-cap i{font-style:normal;color:rgba(55,224,176,.55)}
  .cmap-cap .clock em{font-style:normal;color:var(--accent)}
  .cmap-land{stroke-width:2}
  .cmap-link{stroke-width:2.6;stroke-dasharray:6 10}
  .cmap-signal{r:6px}
  .cmap-city .core{r:12px;stroke-width:3}
  .cmap-city .lbl{font-size:34px;transform:translateY(8px)}
  .cmap-city .sub{font-size:24px;transform:translateY(26px)}
  .cmap-hz{font-size:34px}
  @keyframes cpulse{0%{r:14px;opacity:.6}100%{r:40px;opacity:0}}
  .contact{padding:60px 0}
  /* contact, minimal: just the headline + the CTA button. Everything else
     (paragraph, email, offices) is either in the footer right below or one
     tap away behind the mailto button. .ci-brief stays in the DOM unused. */
  .contact-info p,.contact-info .ci-row{display:none}
  .contact-info .cta{margin-top:22px!important}
  .contact-next{padding:26px 20px}
  .cdir{padding:22px 18px}
  footer{padding:40px 0 32px}
  .foot-bottom{margin-top:30px}
  /* plumbing banner stacks; the mini pipe becomes the divider between copy and CTA */
  .plumb-banner{padding:0 0 60px}
  .plumb-banner .card{grid-template-columns:1fr;gap:20px;padding:26px 22px}
  .plumb-banner .pb-art{align-items:flex-start;gap:14px}
  .plumb-banner .pb-art svg{width:210px}
}