/* Layout: software-console look on a dot-grid canvas. Colour carries meaning: blue = AI work, orange = human decision, green = done. */
:root{
  --bg:#F5F7FB; --surface:#FFFFFF; --sunk:#ECF0F7; --ink:#0E1A3D; --muted:#56627F; --line:#D9E0EC;
  --ai:#2148C9; --ai-soft:#E3EAFF; --hu:#EF7D1A; --hu-ink:#AD4F06; --hu-soft:#FFEDDB;
  --ok:#11845A; --ok-soft:#DCF2E8; --night:#0E1A3D; --on-night:#EEF2FA; --night-line:#283666;
  --shadow:0 1px 2px rgba(14,26,61,.06),0 12px 32px -16px rgba(14,26,61,.28);
  --sans:"Geist","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --mono:"Geist Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0A1128; --surface:#111B3A; --sunk:#0D1631; --ink:#E8EDF8; --muted:#9AA6C4; --line:#22305A;
  --ai:#7E9CFF; --ai-soft:#1A2A5E; --hu:#FF9A45; --hu-ink:#FFB06B; --hu-soft:#3A2410;
  --ok:#3CCB8C; --ok-soft:#0F3326; --night:#050A1C; --on-night:#EEF2FA; --night-line:#1E2A52;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 16px 36px -18px rgba(0,0,0,.7); color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0A1128; --surface:#111B3A; --sunk:#0D1631; --ink:#E8EDF8; --muted:#9AA6C4; --line:#22305A;
  --ai:#7E9CFF; --ai-soft:#1A2A5E; --hu:#FF9A45; --hu-ink:#FFB06B; --hu-soft:#3A2410;
  --ok:#3CCB8C; --ok-soft:#0F3326; --night:#050A1C; --on-night:#EEF2FA; --night-line:#1E2A52;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 16px 36px -18px rgba(0,0,0,.7); color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.6;margin:0;-webkit-font-smoothing:antialiased}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
#site[data-lang="zh"] .en,#site[data-lang="en"] .zh{display:none}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.wrap{max-width:1180px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
h1,h2,h3{margin:0;text-wrap:balance;letter-spacing:-.025em;color:var(--ink)}
h2{font-size:clamp(1.7rem,3.6vw,2.6rem);font-weight:700;line-height:1.12}
p{margin:0}
a{color:inherit}
:focus-visible{outline:3px solid var(--hu);outline-offset:3px;border-radius:6px}
.eyebrow{font-family:var(--mono);font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ai);font-weight:500}
.fine{font-size:.85rem;color:var(--muted)}
.linkbtn{background:none;border:0;padding:0;color:var(--ai);font:inherit;font-weight:600;cursor:pointer;text-decoration:underline;text-underline-offset:3px}

.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--ink);color:var(--bg);text-decoration:none;font-weight:600;padding:13px 22px;border-radius:10px;border:1.5px solid var(--ink);transition:transform .15s}
.btn:hover{transform:translateY(-1px)}
.btn-sm{padding:8px 14px;font-size:.88rem}
.btn-line{background:transparent;color:var(--ink)}
.btn-onnight{background:var(--hu);border-color:var(--hu);color:#1B0E02}

/* nav */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--bg)}
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:30;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:24px;padding-block:10px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand img{width:40px;height:40px}
.brand b{font-weight:800;letter-spacing:.08em;color:var(--ai)}
.nav-links{display:flex;gap:24px;margin-left:auto}
.nav-links a{text-decoration:none;color:var(--muted);font-weight:500;font-size:.92rem}
.nav-links a:hover{color:var(--ink)}
.nav-act{display:flex;gap:10px;align-items:center}
.lang{font:600 .85rem var(--sans);color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:7px 11px;cursor:pointer}
@media (max-width:860px){.nav-in{flex-wrap:wrap;row-gap:10px}.nav-act{margin-left:auto}.nav-links{order:3;width:100%;margin-left:0;gap:20px;overflow-x:auto;white-space:nowrap;padding-bottom:2px;scrollbar-width:none}.nav-links::-webkit-scrollbar{display:none}}
@media (max-width:400px){.nav-act .btn-sm{display:none}}

/* hero */
.hero{background-color:var(--bg);background-image:radial-gradient(var(--line) 1px,transparent 1.2px);background-size:22px 22px;border-bottom:1px solid var(--line)}
.hero-in{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:56px;align-items:center;padding-block:56px 64px}
.hero-copy{display:flex;flex-direction:column;gap:22px;min-width:0}
h1{font-size:clamp(2.3rem,5vw,3.9rem);font-weight:700;line-height:1.04}
#site[data-lang="zh"] h1{line-height:1.2;font-weight:900}
.lede{font-size:1.12rem;color:var(--muted);max-width:30em}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.legend{list-style:none;margin:6px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:18px;font-size:.85rem;color:var(--muted)}
.legend li{display:flex;align-items:center;gap:7px}
.legend i{width:10px;height:10px;border-radius:3px}
.k-ai{background:var(--ai)}.k-hu{background:var(--hu)}.k-ok{background:var(--ok)}
@media (max-width:960px){.hero-in{grid-template-columns:1fr;gap:36px;padding-block:36px 48px}}

/* machine */
.machine{position:relative;margin:0;background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);overflow:hidden;min-width:0}
.m-bar{display:flex;align-items:center;gap:12px;padding:10px 14px;border-bottom:1px solid var(--line);font-size:.82rem}
.m-title{font-weight:600}
.m-status{margin-left:auto;display:inline-flex;align-items:center;gap:6px;padding:3px 9px;border-radius:999px;font-size:.75rem;font-weight:600;background:var(--ai-soft);color:var(--ai)}
.m-status i{width:7px;height:7px;border-radius:50%;background:currentColor}
.m-status[data-s="run"] i{animation:blink 1s infinite}
.m-status[data-s="wait"]{background:var(--hu-soft);color:var(--hu-ink)}
.m-status[data-s="done"]{background:var(--ok-soft);color:var(--ok)}
.m-clock{color:var(--muted);font-size:.8rem}
@keyframes blink{50%{opacity:.25}}
.m-stages{list-style:none;margin:0;padding:8px 14px;display:flex;gap:4px;border-bottom:1px solid var(--line);background:var(--sunk);overflow-x:auto;scrollbar-width:none}
.m-stages li{flex:1 0 auto;text-align:center;font-family:var(--mono);font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;padding:4px 6px;border-radius:6px;color:var(--muted);transition:background .25s,color .25s}
.m-stages li.done{color:var(--ok)}
.m-stages li.on{background:var(--ai);color:#fff}
.m-stages li.hu.on{background:var(--hu);color:#1B0E02}
.m-body{padding:14px;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.m-msg,.m-ai,.m-approve,.m-sync{grid-column:1/-1}
.m-msg{position:relative;overflow:hidden;background:var(--sunk);border:1px solid var(--line);border-radius:12px;padding:10px 12px;transition:opacity .4s,transform .4s}
.m-msg-h{font-size:.72rem;color:var(--muted);display:flex;gap:8px;align-items:center}
.m-msg-h .t{margin-left:auto}
.app{font-weight:600;padding:1px 6px;border-radius:4px;background:var(--ok-soft);color:var(--ok)}
.m-msg-t{margin-top:4px;font-size:.95rem}
.sig{color:var(--muted)}
mark{background:transparent;color:inherit;border-radius:4px;padding:0 2px;transition:background .3s,box-shadow .3s}
mark.hit{background:var(--ai-soft);box-shadow:0 0 0 1.5px var(--ai)}
.scan{position:absolute;inset:0 auto 0 0;width:30%;background:linear-gradient(90deg,transparent,color-mix(in srgb,var(--ai) 22%,transparent),transparent);transform:translateX(-120%);pointer-events:none}
.m-msg.scanning .scan{animation:scan 1.1s ease-in-out}
@keyframes scan{to{transform:translateX(380%)}}
.m-ai{border:1px solid color-mix(in srgb,var(--ai) 35%,var(--line));border-radius:12px;padding:10px 12px;background:color-mix(in srgb,var(--ai-soft) 45%,var(--surface))}
.m-ai-h{display:flex;align-items:center;gap:10px}
.ai-tag,.hu-tag{font:600 .68rem var(--mono);letter-spacing:.08em;padding:2px 7px;border-radius:5px;background:var(--ai);color:#fff}
.hu-tag{background:var(--hu);color:#1B0E02;text-transform:uppercase}
.m-verb{font-size:.8rem;color:var(--ai);font-weight:500;min-width:0}
.m-prog{margin-left:auto;width:72px;height:4px;border-radius:4px;background:var(--line);overflow:hidden}
.m-prog i{display:block;height:100%;width:100%;background:var(--ai);transition:width .4s}
.fields{margin:10px 0 0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.fields div{min-width:0}
.fields dt{font-size:.66rem;font-family:var(--mono);text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
[data-slot]{font-weight:600;font-size:.88rem;min-height:1.5em;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.fields dd{margin:2px 0 0;background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:3px 7px}
[data-slot].empty{color:transparent;background-image:linear-gradient(90deg,var(--line) 0 60%,transparent 0);background-size:100% 3px;background-repeat:no-repeat;background-position:7px 55%}
.doc-line [data-slot].empty{background-position:0 55%;min-width:2.5em}
[data-slot].pop{animation:pop .45s}
@keyframes pop{0%{background-color:var(--ai-soft)}100%{background-color:transparent}}
.fields dd.pop{animation:popd .45s}
@keyframes popd{0%{background:var(--ai-soft);border-color:var(--ai)}}
.m-doc{grid-column:1/-1;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px;display:flex;flex-direction:column;gap:8px;transition:opacity .4s}
.doc-h{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px dashed var(--line);padding-bottom:6px}
.doc-h b{letter-spacing:.14em;font-size:.82rem}
.doc-h .mono{font-size:.75rem;color:var(--muted)}
.doc-to{display:flex;gap:8px;align-items:baseline;font-size:.9rem}
.lbl{font:500 .66rem var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.doc-line{display:flex;gap:8px;align-items:baseline;font-size:.85rem;min-width:0}
.doc-line .r{margin-left:auto;color:var(--muted);font-weight:500}
.doc-total{display:flex;justify-content:space-between;align-items:baseline;border-top:1px solid var(--line);padding-top:6px}
.doc-total b{font-size:1.25rem}
.checks{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px 14px;font-size:.78rem;color:var(--muted)}
.checks li{display:flex;align-items:center;gap:6px;opacity:1;transition:opacity .3s}
.checks li::before{content:"✓";font-weight:700;color:var(--ok)}
.checks li.off{opacity:0}
.m-approve{position:relative;display:flex;align-items:center;gap:10px;border-radius:12px;padding:10px 12px;border:1px dashed var(--line);transition:background .3s,border-color .3s}
.ap-txt{font-size:.9rem;font-weight:600;min-width:0}
.ap-txt .d{color:var(--ok)}
.m-approve[data-s="done"] .w,.m-approve[data-s="idle"] .d,.m-approve[data-s="wait"] .d{display:none}
.m-approve[data-s="idle"]{opacity:.45}
.m-approve[data-s="wait"]{background:var(--hu-soft);border:1px solid var(--hu)}
.ap-btn{margin-left:auto;font:600 .88rem var(--sans);padding:8px 16px;border-radius:8px;border:0;background:var(--hu);color:#1B0E02;cursor:pointer;transition:transform .1s}
.m-approve[data-s="wait"] .ap-btn{animation:ring 1.4s infinite}
.m-approve[data-s="done"] .ap-btn,.m-approve[data-s="idle"] .ap-btn{background:var(--sunk);color:var(--muted);cursor:default}
.ap-btn.press{transform:scale(.94)}
@keyframes ring{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--hu) 55%,transparent)}100%{box-shadow:0 0 0 10px transparent}}
.cursor{position:absolute;right:28px;bottom:-6px;width:18px;height:18px;opacity:0;transform:translate(30px,30px);transition:transform .7s cubic-bezier(.3,.8,.3,1),opacity .3s;pointer-events:none;
  background:var(--ink);clip-path:polygon(0 0,0 85%,26% 64%,42% 100%,56% 94%,41% 59%,75% 59%)}
.cursor.go{opacity:1;transform:translate(0,0)}
.m-sync{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.m-sync li{border:1px solid var(--line);border-radius:10px;padding:8px 10px;display:flex;flex-direction:column;font-size:.85rem;transition:background .3s,border-color .3s}
.m-sync .s{font-size:.72rem;font-family:var(--mono);color:var(--muted)}
.m-sync .s::before{content:"✓ ";color:var(--ok);font-weight:700}
.m-sync li.on{background:var(--ok-soft);border-color:color-mix(in srgb,var(--ok) 50%,transparent)}
.m-sync li.on .s{color:var(--ok)}
.m-sync li.off .s{visibility:hidden}
.m-cap{padding:8px 14px 12px;font-size:.78rem;color:var(--muted);border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.m-msg.off,.m-doc.off{opacity:.25}
.m-msg.slide{animation:slidein .5s ease-out}
@keyframes slidein{from{opacity:0;transform:translateY(-10px)}}
.fly{position:absolute;z-index:5;pointer-events:none;font:600 .8rem var(--sans);background:var(--ai);color:#fff;padding:2px 8px;border-radius:6px;white-space:nowrap;box-shadow:0 6px 16px -6px var(--ai)}
.fly.dot{width:10px;height:10px;padding:0;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px color-mix(in srgb,var(--ok) 25%,transparent)}
@media (max-width:520px){
  .fields{grid-template-columns:repeat(2,minmax(0,1fr))}
  .m-body{padding:10px;gap:10px}
  .m-stages{padding:6px 8px;gap:2px}
  .m-stages li{flex:1 1 0;min-width:0;font-size:.56rem;letter-spacing:0;padding:4px 1px;overflow:hidden}
}

/* sections */
.sec{padding-block:88px}
.sec-sunk{background:var(--sunk);border-block:1px solid var(--line)}
.sec-head{display:flex;flex-direction:column;gap:12px;margin-bottom:40px;max-width:760px}

/* before/after */
.ba{display:grid;grid-template-columns:minmax(0,1fr) 220px minmax(0,1fr);gap:28px;align-items:center}
.ba-col{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px;min-width:0}
.ba-h{display:flex;align-items:baseline;gap:8px;margin-bottom:12px}
.ba-h b{font-family:var(--mono);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-right:auto}
.ba-time{font-size:2rem;font-weight:600;letter-spacing:-.03em}
.ba-before .ba-time{color:var(--hu-ink)}
.ba-after .ba-time{color:var(--ok)}
.ba-h small{color:var(--muted)}
.ba-steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.ba-steps li{display:flex;align-items:center;gap:10px;padding:6px 8px;border-radius:8px;font-size:.92rem;transition:background .25s,opacity .5s,transform .6s}
.ba-steps i{font:500 .62rem var(--mono);font-style:normal;width:34px;flex:none;text-align:center;padding:3px 0;border-radius:5px;background:var(--sunk);color:var(--muted)}
.ba-before li.on{background:var(--hu-soft)}
.ba.compress .ba-before li{opacity:.35;text-decoration:line-through;transform:translateX(10px)}
.ba-after li.ai i{background:var(--ai-soft);color:var(--ai)}
.ba-after li.hu i{background:var(--hu-soft);color:var(--hu-ink)}
.ba-after li.ok i{background:var(--ok-soft);color:var(--ok)}
.ba-after li.dim{opacity:.3}
.ba-after li.on{background:var(--sunk)}
.core{aspect-ratio:1;max-width:220px;margin:0 auto;border-radius:24px;background:var(--night);color:var(--on-night);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;position:relative}
.core::before,.core::after{content:"";position:absolute;top:50%;width:28px;height:2px;background:repeating-linear-gradient(90deg,var(--ai) 0 5px,transparent 5px 9px)}
.core::before{right:100%}.core::after{left:100%}
.core-ai{font:700 2rem var(--mono);color:#fff;background:var(--ai);border-radius:12px;padding:4px 14px}
.core-verbs{list-style:none;margin:0;padding:0;font-size:.72rem;display:flex;flex-direction:column;align-items:center;gap:2px;color:#8090B8;text-transform:uppercase;letter-spacing:.08em}
.core-verbs li{transition:color .2s}
.core-verbs li.on{color:#fff}
.core-verbs li.on::before{content:"▸ ";color:var(--ai)}
.sec .fine{margin-top:18px}
@media (max-width:900px){
  .ba{grid-template-columns:1fr;gap:20px}
  .core{max-width:none;aspect-ratio:auto;flex-direction:row;padding:16px;justify-content:flex-start;gap:18px}
  .core-verbs{flex-direction:row;flex-wrap:wrap;gap:4px 12px;align-items:flex-start}
  .core::before,.core::after{display:none}
}

/* statement */
.night{background:var(--night);color:var(--on-night);padding-block:96px}
.stmt{display:flex;flex-direction:column;gap:22px}
.stmt h2,.stmt-b{color:var(--on-night);font-size:clamp(2rem,5vw,3.6rem);font-weight:700;letter-spacing:-.03em;line-height:1.05}
.stmt-b{margin-top:28px}
.verbs{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center}
.verbs li{position:relative;font-size:clamp(.78rem,1.4vw,.95rem);letter-spacing:.1em;padding:8px 12px;border-radius:8px;border:1px solid var(--night-line);color:#7484AE;transition:background .3s,color .3s,border-color .3s}
.verbs li+li::before{content:"→";position:absolute;right:calc(100% + 6px);top:50%;transform:translateY(-50%);letter-spacing:0;color:#3D4B78}
.v-ai li.on{background:var(--ai);border-color:var(--ai);color:#fff}
.v-hu li.on{background:var(--hu);border-color:var(--hu);color:#1B0E02}
.verbs li.lit{color:var(--on-night);border-color:#3D4B78}

/* human in the loop */
.loop{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:56px;align-items:center}
.loop-copy{display:flex;flex-direction:column;gap:22px}
.hu-n{color:var(--hu-ink)}.ai-n{color:var(--ai)}
.counters{display:flex;gap:32px}
.counters div{display:flex;flex-direction:column}
.counters b{font-size:2.6rem;font-weight:600;letter-spacing:-.04em;line-height:1}
.counters span{font-size:.85rem;color:var(--muted)}
.loop-vis{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:18px;align-items:start}
.grid100{display:grid;grid-template-columns:repeat(10,1fr);gap:4px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px}
.grid100 i{aspect-ratio:1;border-radius:3px;background:var(--ai);transition:background .2s,transform .2s;position:relative}
.grid100 i.wait{background:var(--sunk)}
.grid100 i.ex{background:var(--hu);transform:scale(1.15);z-index:1}
.grid100 i.okd{background:var(--ok)}
.tray{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px;display:flex;flex-direction:column;gap:8px;min-width:0}
.tray-h{display:flex;justify-content:space-between;align-items:center;font-size:.8rem;color:var(--muted)}
.tray ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.tray li{display:grid;grid-template-columns:auto 1fr auto;gap:4px 10px;align-items:center;font-size:.78rem;border:1px solid var(--line);border-radius:8px;padding:6px 8px;transition:background .3s,border-color .3s,opacity .3s}
.tray li .id{font-family:var(--mono);font-weight:500}
.tray li .why{color:var(--muted);grid-column:1/3;min-width:0}
.tray li .st{grid-row:1/3;grid-column:3;font:600 .7rem var(--mono);padding:3px 7px;border-radius:5px;background:var(--hu-soft);color:var(--hu-ink)}
.tray li.done{background:var(--ok-soft);border-color:transparent}
.tray li.done .st{background:transparent;color:var(--ok)}
.tray li.pending{opacity:0;transform:translateY(-4px)}
@media (max-width:960px){.loop{grid-template-columns:1fr;gap:32px}}
@media (max-width:560px){.loop-vis{grid-template-columns:1fr}}

/* workflow showcase */
.wf{background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);overflow:hidden}
.wf-tabs{display:flex;gap:4px;padding:8px;border-bottom:1px solid var(--line);overflow-x:auto;scrollbar-width:none}
.wf-tabs button{flex:none;font:600 .9rem var(--sans);color:var(--muted);background:none;border:0;padding:9px 14px;border-radius:8px;cursor:pointer}
.wf-tabs button[aria-selected="true"]{background:var(--ink);color:var(--bg)}
.wf-tabs button:hover:not([aria-selected="true"]){background:var(--sunk);color:var(--ink)}
.wf-stage{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:0}
.wf-pipe{list-style:none;margin:0;padding:24px;display:flex;flex-direction:column;gap:10px;position:relative;border-right:1px solid var(--line)}
.wf-pipe li{position:relative;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font-size:.92rem;font-weight:500;transition:background .3s,border-color .3s,color .3s;background:var(--surface);z-index:1}
.wf-pipe li+li::before{content:"";position:absolute;left:27px;bottom:100%;height:10px;border-left:2px dotted var(--line)}
.wf-pipe .tag{font:600 .62rem var(--mono);letter-spacing:.08em;width:46px;flex:none;text-align:center;padding:3px 0;border-radius:5px;background:var(--sunk);color:var(--muted);text-transform:uppercase}
.wf-pipe li.ai .tag{background:var(--ai-soft);color:var(--ai)}
.wf-pipe li.hu .tag{background:var(--hu-soft);color:var(--hu-ink)}
.wf-pipe li.out .tag{background:var(--ok-soft);color:var(--ok)}
.wf-pipe li.on{border-color:var(--ai);background:var(--ai-soft)}
.wf-pipe li.hu.on{border-color:var(--hu);background:var(--hu-soft)}
.wf-pipe li.done{color:var(--muted)}
.wf-pipe li.done::after{content:"✓";margin-left:auto;color:var(--ok);font-weight:700}
.wf-inspect{padding:20px 24px;background:var(--sunk);min-width:0}
.wf-inspect-h{display:flex;justify-content:space-between;font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin-bottom:12px;gap:12px}
.wf-inspect dl{margin:0;display:flex;flex-direction:column;gap:6px;font-size:.8rem}
.wf-inspect dl div{display:grid;grid-template-columns:110px minmax(0,1fr);gap:10px;padding:6px 8px;border-radius:6px;background:var(--surface);border:1px solid var(--line)}
.wf-inspect dt{color:var(--muted)}
.wf-inspect dd{margin:0;word-break:break-word}
.wf-inspect dl div.new{animation:rownew .9s}
@keyframes rownew{0%{background:var(--ai-soft);border-color:var(--ai);transform:translateX(-6px)}}
.wf-inspect dl div.hu{border-color:var(--hu)}
@media (max-width:820px){.wf-stage{grid-template-columns:1fr}.wf-pipe{border-right:0;border-bottom:1px solid var(--line);padding:16px}.wf-inspect{padding:16px}.wf-inspect dl div{grid-template-columns:92px minmax(0,1fr)}}

/* tools hub */
.tools{display:grid;grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);gap:48px;align-items:center}
.tools-copy{display:flex;flex-direction:column;gap:16px}
.hub{position:relative;aspect-ratio:16/11;max-width:100%}
.hub-lines{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.hub-lines line{stroke:color-mix(in srgb,var(--muted) 45%,transparent);stroke-width:1.5;vector-effect:non-scaling-stroke;stroke-dasharray:4 4}
.hub-core{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:var(--night);color:#9AA8CC;border-radius:18px;padding:16px 20px;display:flex;flex-direction:column;align-items:center;gap:6px;z-index:2;box-shadow:var(--shadow)}
.hub-core small{font:500 .66rem var(--mono);letter-spacing:.1em;text-transform:uppercase}
.tool{position:absolute;transform:translate(-50%,-50%);background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:7px 12px;font-size:.85rem;font-weight:600;white-space:nowrap;z-index:2;display:flex;flex-direction:column;align-items:center;line-height:1.25;box-shadow:var(--shadow)}
.tool small{font:400 .64rem var(--mono);color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.packet{position:absolute;width:8px;height:8px;margin:-4px 0 0 -4px;border-radius:50%;background:var(--ai);z-index:1;animation:travel var(--d,2.6s) linear infinite;animation-delay:var(--dl,0s);opacity:0}
@keyframes travel{0%{left:var(--x1);top:var(--y1);opacity:0}10%{opacity:1}90%{opacity:1}100%{left:var(--x2);top:var(--y2);opacity:0}}
@media (max-width:900px){.tools{grid-template-columns:1fr}.hub{aspect-ratio:1/1}}
@media (max-width:480px){.tool{font-size:.74rem;padding:5px 8px}.hub-core{padding:12px}}

/* start */
.start-card{background:var(--night);color:var(--on-night);border-radius:20px;padding:44px;display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:40px;align-items:center}
.start-card h2{color:var(--on-night);margin-bottom:24px}
.start-steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.start-steps li{display:flex;gap:14px;align-items:baseline;font-size:1.05rem}
.start-steps b{font:600 .8rem var(--mono);color:var(--hu);flex:none}
.contact{display:flex;flex-direction:column;gap:6px;align-items:flex-start;border:1px solid var(--night-line);border-radius:14px;padding:22px}
.contact .lbl{color:var(--hu)}
.c-val{font:600 1.15rem var(--mono);user-select:all;margin-bottom:10px}
.contact .c-lbl2{margin-top:18px;padding-top:16px;border-top:1px solid var(--night-line);align-self:stretch}
.c-mail{color:inherit;text-decoration:none;margin-bottom:0;overflow-wrap:anywhere}
.c-mail:hover{color:var(--hu);text-decoration:underline}
@media (max-width:820px){.start-card{grid-template-columns:1fr;padding:28px 22px}}
.faq{max-width:780px;margin-top:64px;display:flex;flex-direction:column;gap:8px}
.faq h3{font-size:1.1rem;margin-bottom:8px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:14px 0;font-weight:600;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font:500 1.2rem var(--mono);color:var(--muted);line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details p{padding-bottom:16px;color:var(--muted);max-width:65ch}

.foot{padding-block:28px;border-top:1px solid var(--line)}
.foot-in{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 24px;font-size:.85rem;color:var(--muted)}
.brand-mini{display:flex;align-items:center;gap:8px;font-weight:800;letter-spacing:.08em;color:var(--ai)}
@media (max-width:560px){.sec{padding-block:60px}.night{padding-block:64px}}

/* savings calculator */
.calc{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:20px;align-items:stretch}
.calc-in{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:24px;display:flex;flex-direction:column;gap:22px}
.rng{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px 16px;align-items:baseline}
.rng label{font-size:.95rem;font-weight:500}
.rng output{font-weight:600;color:var(--ai);font-size:1rem}
.rng input{grid-column:1/-1;width:100%;margin:0;accent-color:var(--ai);height:20px;cursor:pointer}
.calc-in .fine{margin-top:0}
.calc-out{background:var(--night);color:var(--on-night);border-radius:16px;padding:24px;display:flex;flex-direction:column;gap:18px;min-width:0}
.calc-out .lbl{color:#9AA8CC}
.calc-big{display:flex;flex-direction:column;gap:4px}
.calc-big b{font-size:clamp(2.2rem,4.6vw,3.2rem);font-weight:600;letter-spacing:-.04em;line-height:1.05;color:#fff}
.calc-rows{margin:0;display:flex;flex-direction:column;gap:0;font-size:.85rem}
.calc-rows div{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-top:1px solid var(--night-line)}
.calc-rows dt{color:#9AA8CC;font-family:var(--sans)}
.calc-rows dd{margin:0;font-weight:600}
.calc-math{font-size:.74rem;color:#7484AE;word-break:break-word}
.calc-out .btn{align-self:flex-start;margin-top:auto}
.calc-out .pop{animation:none}
@media (max-width:860px){.calc{grid-template-columns:1fr}}
.year{display:flex;flex-direction:column;gap:10px}
.year-grid{display:grid;grid-template-rows:repeat(6,auto);grid-auto-flow:column;grid-auto-columns:1fr;gap:2px}
.year{margin-top:auto;padding-top:18px;border-top:1px solid var(--line)}
.year-grid i{aspect-ratio:1;border-radius:2px;background:var(--sunk);box-shadow:inset 0 0 0 1px var(--line);transition:background .25s}
.year-grid i.on{background:var(--ai);box-shadow:none}
.year-grid i.over{background:var(--hu)}
.year-key{display:flex;gap:8px;align-items:baseline;font-size:.8rem;color:var(--muted)}
.year-key i{flex:none;width:9px;height:9px;border-radius:2px;background:var(--ai);transform:translateY(1px)}
.year-key b{color:var(--ai);font-family:var(--mono)}

/* homepage → training link */
.learn-link{margin-top:20px;display:flex;align-items:center;gap:20px;justify-content:space-between;text-decoration:none;border:1px solid var(--line);border-radius:14px;padding:18px 22px;background:var(--surface);transition:border-color .15s}
.learn-link:hover{border-color:var(--hu)}
.learn-link>span:first-child{display:flex;flex-direction:column;gap:2px;color:var(--muted);font-size:.92rem}
.learn-link b{color:var(--ink);font-size:1.02rem}
.arr{font:600 1.3rem var(--mono);color:var(--hu);transition:transform .15s}
.learn-link:hover .arr,.path:hover .arr{transform:translateX(4px)}

/* services page */
.sv-hero{background-color:var(--bg);background-image:radial-gradient(var(--line) 1px,transparent 1.2px);background-size:22px 22px;border-bottom:1px solid var(--line);padding-block:56px 64px}
.sv-hero .wrap{display:flex;flex-direction:column;gap:18px}
.sv-h1{font-size:clamp(2.2rem,5vw,3.6rem);font-weight:700;line-height:1.05;max-width:16em}
#site[data-lang="zh"] .sv-h1{font-weight:900;line-height:1.2}
.fork{margin-top:18px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.path{position:relative;display:flex;flex-direction:column;gap:10px;text-decoration:none;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:var(--shadow);transition:border-color .15s,transform .15s}
.path:hover{transform:translateY(-2px)}
.path-ai{border-top:4px solid var(--ai)}.path-ai:hover{border-color:var(--ai)}
.path-hu{border-top:4px solid var(--hu)}.path-hu:hover{border-color:var(--hu)}
.path-as{border-top:4px solid var(--ok)}.path-as:hover{border-color:var(--ok)}
.path-as .path-tag,.path-as .arr{color:var(--ok)}
.path-tag{font-size:.72rem;letter-spacing:.1em;text-transform:uppercase}
.path-ai .path-tag{color:var(--ai)}.path-hu .path-tag{color:var(--hu-ink)}
.path b{font-size:1.35rem;letter-spacing:-.02em;line-height:1.25;padding-right:28px}
.path-for{color:var(--muted)}
.path-mini{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:.68rem;color:var(--muted);margin-top:6px}
.path-mini i{font-style:normal;padding:3px 7px;border-radius:5px;background:var(--sunk)}
.path-mini .a{background:var(--ai-soft);color:var(--ai)}.path-mini .h{background:var(--hu-soft);color:var(--hu-ink)}.path-mini .o{background:var(--ok-soft);color:var(--ok)}
.path .arr{position:absolute;top:22px;right:22px}
.path-ai .arr{color:var(--ai)}
@media (max-width:960px){.fork{grid-template-columns:1fr}}
.sv-lede{color:var(--muted);font-size:1.05rem;max-width:40em}

.track{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;border:1px solid var(--line);border-radius:16px;background:var(--surface);overflow:hidden}
.track li{padding:20px 18px;display:flex;flex-direction:column;gap:8px;border-left:1px solid var(--line);position:relative}
.track li:first-child{border-left:0}
.track li::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--ai)}
.track li.hu::before{background:var(--hu)}
.t-n{font-size:.75rem;color:var(--muted)}
.track b{font-size:1rem;line-height:1.3}
.track p{font-size:.88rem;color:var(--muted)}
@media (max-width:900px){.track{grid-template-columns:1fr}.track li{border-left:0;border-top:1px solid var(--line);padding-left:22px}.track li:first-child{border-top:0}.track li::before{right:auto;bottom:0;width:3px;height:auto}}

.get{margin-top:28px;display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:16px 32px;align-items:center;border-top:1px solid var(--line);padding-top:28px}
.get h3{font-size:1rem}
.get ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 24px;font-size:.92rem}
@media (max-width:560px){.get ul{grid-template-columns:1fr}}
.get li{display:flex;gap:8px;align-items:baseline}
.get li::before{content:"✓";color:var(--ai);font-weight:700}
.get li.hu::before{color:var(--hu)}
.arr-in{margin-left:.45em;display:inline-block}
.get-cta{display:flex;flex-direction:column;gap:10px;align-items:stretch}
@media (max-width:900px){.get-cta{flex-direction:row;flex-wrap:wrap;align-items:center}}
@media (max-width:900px){.get{grid-template-columns:1fr}.get .btn{justify-self:start}}

.learn{display:flex;flex-direction:column;gap:12px;margin-bottom:28px}
.learn h3{font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:500}
.skills{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.skills li{padding:8px 14px;border-radius:999px;background:var(--surface);border:1px solid var(--line);font-size:.9rem}
.skills li.a{border-color:var(--ai);color:var(--ai)}
.skills li.h{border-color:var(--hu);color:var(--hu-ink)}

.formats{background:var(--surface);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.f-row{display:grid;grid-template-columns:110px repeat(3,minmax(0,1fr));border-top:1px solid var(--line)}
.f-row:first-child{border-top:0}
.f-row>span{padding:14px 18px;border-left:1px solid var(--line);font-size:.93rem;min-width:0}
.f-row>span:first-child{border-left:0}
.f-head>span{display:flex;flex-direction:column;gap:4px}
.f-head b{font-size:1.05rem}
.f-head em{font-style:normal;font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;color:var(--hu-ink);background:var(--hu-soft);align-self:flex-start;padding:2px 7px;border-radius:5px}
.f-lbl{font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.f-cta>span{padding-block:16px}
@media (max-width:820px){
  .f-row{grid-template-columns:1fr}
  .f-head,.f-cta{display:none}
  .formats{display:none}
  .formats-m{display:flex}
}
.formats-m{display:none;flex-direction:column;gap:12px}
.fm{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px;display:flex;flex-direction:column;gap:10px}
.fm h4{margin:0;font-size:1.05rem;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.fm h4 em{font:500 .66rem var(--mono);font-style:normal;letter-spacing:.06em;text-transform:uppercase;color:var(--hu-ink);background:var(--hu-soft);padding:2px 7px;border-radius:5px}
.fm dl{margin:0;display:flex;flex-direction:column;gap:6px;font-size:.9rem}
.fm dl div{display:grid;grid-template-columns:70px minmax(0,1fr);gap:10px}
.fm dt{font:500 .7rem var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding-top:3px}
.fm dd{margin:0}
.fm .btn{align-self:flex-start}
.talk-p{color:#C3CDE6;max-width:30em}
@media (max-width:820px){.formats-m{display:flex}}
.faq-top{margin-top:0}
.faq-h2{font-size:clamp(1.5rem,2.8vw,2rem);margin-bottom:12px}

/* meet minho */
.minho{display:grid;grid-template-columns:auto minmax(0,1fr);gap:36px;align-items:center;max-width:860px}
.minho-av{width:160px;height:160px;border-radius:50%;display:block;object-fit:cover;background:#fff;box-shadow:0 0 0 6px var(--surface),0 0 0 7px var(--line),var(--shadow)}
.minho-copy h2{margin:6px 0 12px}
.minho-copy p{font-size:1.1rem;max-width:36em}
.minho-sub{color:var(--muted);margin-top:8px;font-size:1rem!important}
@media (max-width:640px){.minho{grid-template-columns:1fr;gap:22px}.minho-av{width:120px;height:120px}}
/* two ways to start */
.start-a{font-size:1.05rem;color:var(--on-night);margin:-8px 0 16px;display:flex;gap:10px;align-items:center}
.start-tag{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:6px;font-size:.75rem;font-weight:700;background:var(--hu);color:#1B0E02;flex:none}
.start-alt{margin-top:16px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px 32px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:24px 28px}
.start-alt h3{font-size:1.1rem;display:flex;gap:10px;align-items:center;margin-bottom:6px}
.start-alt .start-tag{background:var(--ai);color:#fff}
.start-alt p{color:var(--muted);max-width:40em}
.start-alt-cta{display:flex;gap:10px;flex-wrap:wrap}
@media (max-width:820px){.start-alt{grid-template-columns:1fr;padding:22px}}
#minho{padding-bottom:0}
#minho + .start{padding-top:48px}
@media (max-width:640px){#minho + .start{padding-top:32px}}
@media (min-width:861px){.nav-act{padding-left:22px;border-left:1px solid var(--line)}}

/* services v4: hero comparison + 3-step track */
.path-cmp{margin:4px 0 0;padding-top:12px;border-top:1px dashed var(--line);display:grid;gap:8px;font-size:.88rem}
.path-cmp div{display:grid;grid-template-columns:5.5em minmax(0,1fr);gap:10px}
.path-cmp dt{font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);padding-top:2px}
.path-cmp dd{margin:0;color:var(--ink)}
.track-3{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:900px){.track-3{grid-template-columns:1fr}}