/* Signal Flow — Léo's AI Studio · September 2026 edition */
:root{
  --bg:#0a0c0f; --bg2:#0e1116; --panel:#12161c; --panel2:#171c24; --line:#232b36; --line2:#2f3a48;
  --text:#ece6d9; --soft:#c9c2b4; --dim:#8d96a1; --faint:#5d6672;
  --amber:#ffb454; --amber2:#ff8f3a; --red:#ff4b3e; --teal:#3fd8c6; --violet:#a891ff; --blue:#6fb2ff; --green:#8bdc6c; --rose:#ff7aa8;
  --local:var(--teal); --cloud:var(--violet); --voice:var(--amber); --memory:var(--green);
  --serif:"Instrument Serif", "Iowan Old Style", Georgia, serif;
  --sans:"Inter Tight", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono:"JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --gutter:clamp(16px, 4vw, 56px); --maxw:1240px; --radius:14px;
  --ease:cubic-bezier(.2,.7,.1,1);
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:400 17px/1.6 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:100;opacity:.05;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
img{max-width:100%;display:block}
a{color:var(--amber);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px;border-radius:6px}
b{font-weight:600;color:var(--text)}
em{font-family:var(--serif);font-style:italic;font-weight:400;color:var(--amber)}
h1,h2,h3{margin:0;font-weight:500;letter-spacing:-.02em;line-height:1.02}
h2{font-family:var(--serif);font-weight:400;font-size:clamp(40px,6.4vw,88px);letter-spacing:-.015em}
h2 em{color:var(--amber)}
h3{font-size:clamp(19px,1.6vw,22px);letter-spacing:-.01em;line-height:1.2}
p{margin:0 0 1em}
.skip{position:absolute;left:-999px;top:8px;background:var(--amber);color:#000;padding:8px 12px;border-radius:8px;z-index:200}
.skip:focus{left:8px}
.fine{font-size:13px;color:var(--dim)}
.small{font-size:12px}

/* ---------- top bar ---------- */
.topbar{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;gap:18px;padding:12px var(--gutter);
  background:linear-gradient(to bottom,rgba(10,12,15,.86),rgba(10,12,15,0));backdrop-filter:blur(0px);transition:background .4s,backdrop-filter .4s,border-color .4s;border-bottom:1px solid transparent}
.topbar.scrolled{background:rgba(10,12,15,.78);backdrop-filter:blur(14px) saturate(1.3);border-color:var(--line)}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font:500 12px/1 var(--mono);letter-spacing:.18em;white-space:nowrap}
.brand:hover{text-decoration:none}
.brand b{color:var(--amber);font-weight:600}
.lamp{width:10px;height:10px;border-radius:50%;background:#3a1512;box-shadow:inset 0 0 0 1px #5a2420;transition:all .3s}
.lamp.on{background:var(--red);box-shadow:0 0 0 3px rgba(255,75,62,.18),0 0 18px 4px rgba(255,75,62,.6)}
.chapters{display:flex;gap:2px;margin-left:auto;font:500 12px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase}
.chapters a{color:var(--dim);padding:8px 10px;border-radius:999px}
.chapters a:hover,.chapters a.active{color:var(--text);background:rgba(255,255,255,.06);text-decoration:none}
.top-actions{display:flex;gap:8px}
.chip{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line2);background:rgba(18,22,28,.7);border-radius:999px;padding:7px 12px;font:500 12px/1 var(--mono);letter-spacing:.06em;color:var(--soft);white-space:nowrap}
.chip:hover{border-color:var(--amber);color:var(--text)}
.chip-dot{width:7px;height:7px;border-radius:50%;background:var(--faint)}
.chip[aria-pressed=true] .chip-dot{background:var(--teal);box-shadow:0 0 10px var(--teal)}
.chip-hot{border-color:rgba(255,180,84,.5);color:var(--amber)}
@media (max-width:1100px){.chapters{display:none}.top-actions{margin-left:auto}}
@media (max-width:420px){.brand-text{display:none}}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;overflow:hidden;isolation:isolate}
.hero-media{position:absolute;inset:0;z-index:-3}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:60% 50%;transform:scale(1.08);animation:kenburns 38s ease-in-out infinite alternate;filter:saturate(1.05) contrast(1.04)}
@keyframes kenburns{from{transform:scale(1.08) translate(0,0)}to{transform:scale(1.18) translate(-2.5%,-1.5%)}}
.hero-shade{position:absolute;inset:0;z-index:-2;background:
  radial-gradient(ellipse 90% 70% at 65% 40%,transparent 0,rgba(10,12,15,.18) 60%,rgba(10,12,15,.6) 100%),
  linear-gradient(to top,var(--bg) 0,rgba(10,12,15,.6) 26%,rgba(10,12,15,0) 60%,rgba(10,12,15,.45) 100%),
  linear-gradient(to right,rgba(10,12,15,.72) 0,rgba(10,12,15,.05) 55%)}
.scope{position:absolute;left:0;right:0;bottom:0;height:40%;width:100%;z-index:-1;opacity:.55;pointer-events:none}
.hero-inner{padding:0 var(--gutter);max-width:var(--maxw);width:100%;margin:0 auto;padding-top:120px}
.eyebrow{font:500 12px/1.4 var(--mono);letter-spacing:.2em;text-transform:uppercase;color:var(--amber);margin-bottom:18px}
.hero h1{font-family:var(--serif);font-weight:400;font-size:clamp(78px,15vw,230px);line-height:.84;letter-spacing:-.035em;margin-left:-.04em}
.hero h1 em{color:var(--amber);text-shadow:0 0 60px rgba(255,160,70,.35)}
.lede{font-size:clamp(18px,1.9vw,23px);line-height:1.45;color:var(--soft);max-width:620px;margin:26px 0 30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.btn{display:inline-flex;align-items:center;gap:12px;border-radius:999px;padding:14px 22px;font:600 15px/1.1 var(--sans);border:1px solid var(--line2);background:rgba(18,22,28,.6);color:var(--text);backdrop-filter:blur(6px);transition:transform .25s var(--ease),border-color .25s,background .25s}
.btn:hover{transform:translateY(-2px);text-decoration:none;border-color:var(--amber)}
.btn small{font:500 11px/1 var(--mono);letter-spacing:.06em;color:rgba(0,0,0,.55);margin-left:4px}
.btn-hot{background:linear-gradient(180deg,#ffc36e,#ff9d42);color:#1a0f02;border-color:transparent;box-shadow:0 10px 40px -10px rgba(255,160,60,.7),inset 0 1px 0 rgba(255,255,255,.5)}
.btn-hot:hover{border-color:transparent}
.btn-lamp{width:9px;height:9px;border-radius:50%;background:#7a1a12;box-shadow:inset 0 0 0 1px rgba(0,0,0,.3)}
.btn-hot.playing .btn-lamp{background:var(--red);box-shadow:0 0 12px var(--red)}
.btn-ghost{color:var(--soft)}
.meters{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;max-width:var(--maxw);width:calc(100% - 2*var(--gutter));margin:56px auto 0;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.meter{background:rgba(12,15,19,.78);backdrop-filter:blur(10px);padding:16px 18px 14px;position:relative}
.meter::after{content:"";position:absolute;left:18px;right:18px;bottom:8px;height:3px;border-radius:2px;background:linear-gradient(90deg,var(--teal) 0 60%,var(--amber) 60% 85%,var(--red) 85%);opacity:.2}
.meter b{display:block;font:400 clamp(28px,3.4vw,44px)/1 var(--serif);color:var(--text);letter-spacing:-.01em}
.meter span{display:block;font:500 11px/1.35 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--dim);margin:6px 0 8px}
.hero-foot{display:flex;justify-content:space-between;max-width:var(--maxw);width:calc(100% - 2*var(--gutter));margin:18px auto 22px;font:500 11px/1 var(--mono);letter-spacing:.16em;color:var(--faint)}
.hero-foot span:first-child{color:var(--red)}
@media (max-width:760px){.meters{grid-template-columns:repeat(2,1fr)}.meter:last-child{grid-column:span 2}.hero-foot span:nth-child(2){display:none}}

/* ---------- sections ---------- */
main{position:relative}
.section{position:relative;padding:clamp(90px,12vw,160px) var(--gutter) clamp(60px,8vw,110px);max-width:calc(var(--maxw) + 2*var(--gutter));margin:0 auto}
.section-head{position:relative;margin-bottom:clamp(36px,5vw,64px)}
.kicker{display:flex;align-items:center;gap:12px;font:500 12px/1 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--dim);margin-bottom:22px}
.kicker .num{color:var(--amber);border:1px solid rgba(255,180,84,.4);border-radius:6px;padding:4px 7px}
.kicker.small{font-size:11px;margin-bottom:10px}
.section-intro{font-size:clamp(17px,1.5vw,20px);line-height:1.55;color:var(--soft);max-width:700px;margin-top:26px}
.listen{position:absolute;right:0;top:0;border:1px solid var(--line2);background:var(--panel);color:var(--soft);border-radius:999px;padding:8px 14px;font:500 12px/1 var(--mono);letter-spacing:.08em}
.listen:hover{border-color:var(--amber);color:var(--amber)}
.listen.playing{border-color:var(--red);color:var(--red)}
@media (max-width:760px){.listen{position:static;margin-top:18px}}

.reveal{opacity:0;transform:translateY(28px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- tldr ---------- */
.tldr-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.tl{background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px 20px;position:relative;overflow:hidden}
.tl::before{content:"";position:absolute;inset:0 0 auto;height:2px;background:var(--c,var(--amber));opacity:.8}
.tl h3{margin:16px 0 10px}
.tl p{color:var(--soft);font-size:15.5px;margin:0}
.tl-tag{font:600 11px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--c);border:1px solid color-mix(in srgb,var(--c) 45%,transparent);padding:5px 8px;border-radius:6px}
.tl:nth-child(1){--c:var(--local)}.tl:nth-child(2){--c:var(--cloud)}.tl:nth-child(3){--c:var(--voice)}.tl:nth-child(4){--c:var(--memory)}
.tl:nth-child(2){transition-delay:.08s}.tl:nth-child(3){transition-delay:.16s}.tl:nth-child(4){transition-delay:.24s}
@media (max-width:1000px){.tldr-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.tldr-grid{grid-template-columns:1fr}}

/* ---------- flow ---------- */
.scenarios{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px}
.scen{border:1px solid var(--line2);background:var(--panel);border-radius:999px;padding:10px 16px;font:500 14px/1.1 var(--sans);color:var(--soft);transition:all .2s}
.scen:hover{border-color:var(--amber);color:var(--text)}
.scen.active{background:var(--amber);color:#1a0f02;border-color:var(--amber)}
.flow-wrap{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:18px;align-items:start}
.flow-stage{position:relative;background:radial-gradient(ellipse at 50% 30%,#141a22,#0c0f13 70%);border:1px solid var(--line);border-radius:18px;overflow:hidden}
.flow-stage::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:40px 40px;opacity:.25;pointer-events:none}
#flow-svg{display:block;width:100%;height:auto;position:relative}
.col-labels{position:absolute;top:12px;left:0;right:0;display:grid;grid-template-columns:repeat(4,1fr);text-align:center;font:600 10px/1 var(--mono);letter-spacing:.2em;color:var(--faint);pointer-events:none}
.flow-stage.tall .col-labels{display:none}
.flow-panel{position:sticky;top:84px;background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:22px;min-height:300px}
.flow-panel h3{margin:6px 0 12px;font-size:22px}
.flow-panel p{color:var(--soft);font-size:15px}
.panel-kicker{font:600 11px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--amber);margin:0}
.panel-meta{font:500 12px/1.5 var(--mono);color:var(--dim);border-top:1px solid var(--line);padding-top:12px;margin-top:12px}
.panel-meta b{color:var(--teal);font-weight:500}
.steps{list-style:none;margin:14px 0 0;padding:0;counter-reset:s}
.steps li{position:relative;padding:8px 0 8px 36px;color:var(--dim);font-size:14.5px;line-height:1.45;border-left:1px dashed var(--line2);margin-left:11px;transition:color .3s}
.steps li::before{counter-increment:s;content:counter(s);position:absolute;left:-12px;top:7px;width:22px;height:22px;border-radius:50%;background:var(--panel2);border:1px solid var(--line2);font:600 11px/20px var(--mono);text-align:center;color:var(--dim);transition:all .3s}
.steps li.on{color:var(--text)}
.steps li.on::before{background:var(--amber);border-color:var(--amber);color:#1a0f02;box-shadow:0 0 14px rgba(255,180,84,.6)}
.steps li.done::before{background:var(--panel2);border-color:var(--amber);color:var(--amber)}
.steps li:last-child{border-left-color:transparent}
.node{cursor:pointer}
.node rect{fill:#141a21;stroke:var(--line2);stroke-width:1;transition:fill .3s,stroke .3s}
.node .n-title{fill:var(--text);font:600 17px var(--sans)}
.node .n-sub{fill:var(--dim);font:500 12px var(--mono);letter-spacing:.02em}
.node .n-dot{transition:all .3s}
.node:hover rect,.node:focus rect{stroke:var(--amber)}
.node.lit rect{fill:#2a2113;stroke:var(--amber);filter:url(#glow)}
.node.dim{opacity:.35}
.node.core rect{fill:#191510;stroke:rgba(255,180,84,.55)}
.edge{fill:none;stroke:#2c3643;stroke-width:1.4;transition:stroke .3s,opacity .3s}
.edge.lit{stroke:var(--amber);stroke-width:2.2}
.edge.dim{opacity:.25}
.pulse{pointer-events:none}
.flow-stage.tall .node .n-title{font-size:14px}
.flow-stage.tall .node .n-sub{display:none}
@media (max-width:980px){.flow-wrap{grid-template-columns:1fr}.flow-panel{position:relative;top:0;min-height:0}}

/* ---------- rack ---------- */
.units{display:flex;flex-direction:column;gap:22px}
.unit{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,1fr);background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:22px;overflow:hidden;position:relative}
.unit:nth-child(even){grid-template-columns:minmax(0,1fr) minmax(0,1.08fr)}
.unit:nth-child(even) .unit-media{order:2}
.unit-media{position:relative;min-height:340px;overflow:hidden}
.unit-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform 1.6s var(--ease)}
.unit:hover .unit-media img{transform:scale(1.04)}
.unit-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent 60%,rgba(18,22,28,.9));pointer-events:none}
.unit:nth-child(even) .unit-media::after{background:linear-gradient(270deg,transparent 60%,rgba(18,22,28,.9))}
.unit-badge{position:absolute;left:18px;top:18px;z-index:2;font:600 11px/1 var(--mono);letter-spacing:.18em;color:#1a0f02;background:var(--c,var(--teal));padding:7px 10px;border-radius:6px}
.unit-body{padding:clamp(22px,3vw,40px)}
.unit-role{font:600 11px/1 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--c,var(--teal));margin-bottom:12px}
.unit h3{font-family:var(--serif);font-weight:400;font-size:clamp(30px,3.2vw,44px);letter-spacing:-.01em;margin-bottom:6px}
.unit-hw{font:500 13px/1.5 var(--mono);color:var(--dim);margin-bottom:18px}
.unit-body>p{color:var(--soft);font-size:16px}
.leds{display:flex;gap:6px;margin:4px 0 18px}
.leds i{width:6px;height:6px;border-radius:50%;background:#1f2a22;animation:blink var(--d,2s) steps(2,jump-none) infinite;animation-delay:var(--o,0s)}
@keyframes blink{0%{background:#1f2a22}50%{background:var(--c,var(--teal));box-shadow:0 0 8px var(--c,var(--teal))}}
.runs{list-style:none;padding:0;margin:0 0 16px;display:grid;gap:8px}
.runs li{position:relative;padding-left:22px;font-size:15px;color:var(--soft);line-height:1.5}
.runs li::before{content:"";position:absolute;left:2px;top:8px;width:8px;height:8px;border-radius:2px;background:var(--c,var(--teal));opacity:.85}
.runs b{color:var(--text)}
.why{font-size:14.5px;color:var(--dim);border-left:2px solid var(--c,var(--teal));padding:2px 0 2px 14px;margin:0}
.why b{color:var(--soft)}
@media (max-width:860px){.unit,.unit:nth-child(even){grid-template-columns:1fr}.unit:nth-child(even) .unit-media{order:0}.unit-media{min-height:230px}.unit-media::after,.unit:nth-child(even) .unit-media::after{background:linear-gradient(0deg,rgba(18,22,28,.95),transparent 50%)}}
.thin{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;margin-top:22px;padding:clamp(22px,3vw,36px);border:1px dashed var(--line2);border-radius:22px;align-items:center}
.thin h3{font-family:var(--serif);font-weight:400;font-size:clamp(28px,3vw,38px);margin-bottom:10px}
.thin p{color:var(--soft)}
.thin-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.thin-list li{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px 14px;font-weight:600;font-size:15px;display:grid;grid-template-columns:26px 1fr;column-gap:8px}
.thin-list li span{grid-row:span 2;font-size:18px;color:var(--amber)}
.thin-list small{font-weight:400;color:var(--dim);font-size:13px}
@media (max-width:860px){.thin{grid-template-columns:1fr}}
@media (max-width:460px){.thin-list{grid-template-columns:1fr}}

/* ---------- cloud ---------- */
.cloud{max-width:none;padding-left:0;padding-right:0}
.cloud>*:not(.cloud-hero){max-width:var(--maxw);margin-left:auto;margin-right:auto;padding-left:var(--gutter);padding-right:var(--gutter);box-sizing:content-box}
.cloud-hero{position:absolute;inset:0 0 auto;height:720px;z-index:-1;overflow:hidden;opacity:.55;-webkit-mask-image:linear-gradient(to bottom,transparent,#000 20%,#000 50%,transparent);mask-image:linear-gradient(to bottom,transparent,#000 20%,#000 50%,transparent)}
.cloud-hero img{width:100%;height:100%;object-fit:cover}
.relay{position:relative;margin-bottom:80px}
.relay-track{position:absolute;left:var(--gutter);right:var(--gutter);top:36px;height:2px;background:linear-gradient(90deg,var(--line2),var(--line2))}
.baton{position:absolute;top:-5px;left:0;width:12px;height:12px;border-radius:50%;background:var(--amber);box-shadow:0 0 18px 4px rgba(255,180,84,.6);transition:left 1.1s var(--ease)}
.stages{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:14px;position:relative}
.stage{padding-top:64px;position:relative}
.stage::before{content:attr(data-n);position:absolute;top:22px;left:0;width:30px;height:30px;border-radius:50%;background:var(--bg);border:1px solid var(--line2);font:600 12px/28px var(--mono);text-align:center;color:var(--dim);transition:all .4s}
.stage.on::before{border-color:var(--amber);color:#1a0f02;background:var(--amber);box-shadow:0 0 16px rgba(255,180,84,.6)}
.stage-card{background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:16px;padding:18px 16px;height:100%;transition:border-color .4s,transform .4s var(--ease)}
.stage.on .stage-card{border-color:rgba(255,180,84,.6);transform:translateY(-4px)}
.stage .stage-job{font:600 11px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--amber);margin-bottom:12px}
.stage .stage-model{font-family:var(--serif);font-size:27px;line-height:1.05;margin-bottom:4px}
.stage .stage-lab{font:500 12px/1.3 var(--mono);color:var(--violet);margin-bottom:12px}
.stage p{font-size:14px;color:var(--soft);margin:0}
.relay-foot{margin-top:22px;color:var(--dim);font-size:14.5px;max-width:880px}
@media (max-width:980px){.stages{grid-template-columns:1fr;gap:10px}.relay-track{left:calc(var(--gutter) + 15px);right:auto;top:0;bottom:0;width:2px;height:auto}.baton{left:-5px!important;top:var(--bt,0);transition:top 1.1s var(--ease)}.stage{padding:0 0 0 52px}.stage::before{top:16px}}
.herd-band{margin:0 0 -70px;height:clamp(180px,26vw,340px);border-radius:22px;overflow:hidden;position:relative;z-index:-1;-webkit-mask-image:linear-gradient(to bottom,#000 40%,transparent);mask-image:linear-gradient(to bottom,#000 40%,transparent)}
.herd-band img{width:100%;height:100%;object-fit:cover;object-position:50% 60%}
.console-head{margin-bottom:26px;position:relative}
.console-head h3{font-family:var(--serif);font-weight:400;font-size:clamp(34px,4vw,54px);margin-bottom:12px}
.console-head p{color:var(--soft);max-width:760px}
.console{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;background:linear-gradient(180deg,#171b21,#0f1216);border:1px solid var(--line);border-radius:20px;padding:14px;box-shadow:inset 0 1px 0 rgba(255,255,255,.04),0 30px 80px -40px #000}
.strip{position:relative;background:linear-gradient(180deg,#1c2129,#12161b);border:1px solid #262e39;border-radius:12px;padding:12px 10px 14px;display:flex;flex-direction:column;align-items:center;text-align:center;min-width:0}
.strip.bench{opacity:.62}
.strip-sig{width:84px;height:84px;overflow:hidden;border-radius:50%;display:grid;place-items:center;font:400 28px/1 var(--serif);color:#0a0c0f;background:radial-gradient(circle at 35% 30%,#fff8,transparent 45%),var(--c);box-shadow:0 0 0 3px #0c0f13,0 0 0 4px color-mix(in srgb,var(--c) 50%,transparent),0 0 26px color-mix(in srgb,var(--c) 45%,transparent);margin:4px 0 10px}
.strip-sig img{width:100%;height:100%;object-fit:cover;display:block;border-radius:50%}
.strip h4{margin:0;font:600 15px/1.1 var(--sans)}
.strip .harness{font:500 10px/1.3 var(--mono);color:var(--dim);letter-spacing:.04em;margin:4px 0 8px;min-height:26px}
.strip .model{font:500 11px/1.3 var(--mono);color:var(--c);min-height:30px}
.vu{display:flex;gap:3px;height:74px;align-items:flex-end;margin:10px 0}
.vu i{width:7px;border-radius:2px;background:linear-gradient(to top,var(--teal) 0 55%,var(--amber) 55% 82%,var(--red) 82%);height:6%;opacity:.35;transition:height .08s linear,opacity .2s}
.strip.live .vu i{opacity:1}
.fader{position:relative;width:6px;height:64px;border-radius:3px;background:#0a0c0f;box-shadow:inset 0 0 0 1px #2a323d;margin:4px 0 12px}
.fader::after{content:"";position:absolute;left:50%;top:var(--f,30%);width:26px;height:12px;transform:translate(-50%,-50%);border-radius:3px;background:linear-gradient(#d9d4c9,#8f8a80);box-shadow:0 2px 6px #000;transition:top .6s var(--ease)}
.strip .role{font-size:12.5px;line-height:1.35;color:var(--soft);min-height:52px}
.strip button{margin-top:10px;border:1px solid var(--line2);background:#0e1115;border-radius:999px;padding:6px 12px;font:600 11px/1 var(--mono);letter-spacing:.06em;color:var(--soft)}
.strip button:hover{border-color:var(--c);color:var(--c)}
.strip.live button{background:var(--c);color:#0a0c0f;border-color:var(--c)}
.strip .benchtag{position:absolute;top:8px;right:8px;font:600 9px/1 var(--mono);letter-spacing:.12em;color:var(--dim);border:1px solid var(--line2);border-radius:4px;padding:3px 5px}
@media (max-width:900px){.console{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:560px){.console{grid-template-columns:repeat(2,minmax(0,1fr))}.vu{height:38px}.fader{display:none}.strip .role{min-height:0}.strip .harness,.strip .model{min-height:0}}

/* ---------- voice ---------- */
.voice-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:clamp(24px,4vw,60px);align-items:center;margin-bottom:56px}
.voice-copy .listen{position:static;margin:4px 0 22px}
.voice-fig{margin:0;border-radius:22px;overflow:hidden;border:1px solid var(--line);aspect-ratio:3/2}
.voice-fig img{width:100%;height:100%;object-fit:cover}
.sample{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.wave{width:min(280px,100%);height:54px}
@media (max-width:900px){.voice-grid{grid-template-columns:1fr}}
.chain{list-style:none;margin:0 0 30px;padding:0;display:grid;grid-template-columns:repeat(6,1fr);gap:0;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:var(--panel)}
.chain li{padding:20px 18px;position:relative;border-right:1px solid var(--line)}
.chain li:last-child{border-right:0}
.chain li::after{content:"→";position:absolute;right:-9px;top:20px;color:var(--amber);background:var(--panel);font:600 14px/1 var(--mono);z-index:1}
.chain li:last-child::after{display:none}
.chain b{display:block;font:400 25px/1.05 var(--serif);margin-bottom:8px;color:var(--amber)}
.chain span{font-size:13.5px;color:var(--soft);line-height:1.45;display:block}
@media (max-width:1000px){.chain{grid-template-columns:repeat(3,1fr)}.chain li:nth-child(3){border-right:0}.chain li:nth-child(-n+3){border-bottom:1px solid var(--line)}.chain li:nth-child(3)::after{display:none}}
@media (max-width:560px){.chain{grid-template-columns:1fr}.chain li{border-right:0;border-bottom:1px solid var(--line)}.chain li::after{content:"↓";right:auto;left:18px;top:auto;bottom:-8px;display:block!important}.chain li:last-child::after{display:none!important}}
.rules{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.rule{border-top:2px solid var(--amber);padding:18px 4px 0}
.rule b{font:600 12px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--amber)}
.rule p{margin-top:10px;color:var(--soft);font-size:15.5px}
@media (max-width:860px){.rules{grid-template-columns:1fr}}

/* ---------- memory ---------- */
.memory{max-width:none;padding-left:0;padding-right:0}
.memory>*:not(.memory-bg){max-width:var(--maxw);margin-left:auto;margin-right:auto;padding-left:var(--gutter);padding-right:var(--gutter);box-sizing:content-box}
.memory-bg{position:absolute;inset:0;z-index:-1;overflow:hidden;opacity:.3;-webkit-mask-image:linear-gradient(to bottom,transparent,#000 15%,#000 55%,transparent);mask-image:linear-gradient(to bottom,transparent,#000 15%,#000 55%,transparent)}
.memory-bg img{width:100%;height:100%;object-fit:cover}
.layers{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:26px}
.layer{background:rgba(18,22,28,.82);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:18px;padding:22px}
.layer-n{font:600 11px/1 var(--mono);color:var(--green);letter-spacing:.14em;border:1px solid rgba(139,220,108,.4);padding:4px 7px;border-radius:5px}
.layer h3{font-family:var(--serif);font-weight:400;font-size:30px;margin:16px 0 10px}
.layer p{color:var(--soft);font-size:15px}
.layer small{font:500 11.5px/1.4 var(--mono);color:var(--dim)}
@media (max-width:1000px){.layers{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.layers{grid-template-columns:1fr}}
.rules-card{background:linear-gradient(135deg,#1b1710,#14110c 60%,#121518);border:1px solid rgba(255,180,84,.3);border-radius:22px;padding:clamp(22px,3.4vw,44px);position:relative;overflow:hidden}
.rules-card::before{content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(255,180,84,.14),transparent 70%)}
.rc-head{display:flex;gap:18px;align-items:center;margin-bottom:22px}
.rc-seal{width:58px;height:58px;flex:none;border-radius:50%;display:grid;place-items:center;font:400 34px/1 var(--serif);color:var(--amber);border:1px solid rgba(255,180,84,.5);box-shadow:inset 0 0 20px rgba(255,180,84,.15)}
.rc-head h3{font-family:var(--serif);font-weight:400;font-size:clamp(28px,3vw,40px)}
.rc-list{margin:0;padding:0 0 0 22px;display:grid;grid-template-columns:1fr 1fr;gap:14px 40px}
.rc-list li{color:var(--soft);font-size:15.5px;padding-left:6px}
.rc-list li::marker{color:var(--amber);font:600 13px var(--mono)}
@media (max-width:860px){.rc-list{grid-template-columns:1fr}}

/* ---------- day ---------- */
.day-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,4vw,60px);align-items:center}
.dial-wrap{position:relative;max-width:560px;width:100%;margin:0 auto}
#dial{width:100%;height:auto;display:block;overflow:visible}
.dial-ring{fill:none;stroke:var(--line)}
.dial-night{fill:none;stroke:#141b33;stroke-width:34}
.dial-tick{stroke:var(--line2)}
.dial-hour{fill:var(--faint);font:500 10px var(--mono)}
.dial-ev{cursor:pointer;transition:r .2s}
.dial-hand{stroke:var(--red);stroke-width:2}
.dial-center-t{fill:var(--text);font:400 36px var(--serif);text-anchor:middle}
.dial-center-s{fill:var(--dim);font:500 10px var(--mono);letter-spacing:.14em;text-anchor:middle}
.day-list{list-style:none;margin:0;padding:0;display:grid;gap:4px;max-height:560px;overflow:auto;padding-right:6px}
.day-list li{display:grid;grid-template-columns:62px 1fr;gap:14px;padding:10px 12px;border-radius:12px;border:1px solid transparent;transition:all .25s;cursor:default}
.day-list li:hover,.day-list li.hl{background:var(--panel);border-color:var(--line)}
.day-list time{font:600 13px/1.5 var(--mono);color:var(--c,var(--amber))}
.day-list b{display:block;font-size:15.5px}
.day-list span{font-size:14px;color:var(--dim)}
@media (max-width:900px){.day-grid{grid-template-columns:1fr}.day-list{max-height:none}}

/* ---------- lessons ---------- */
.lesson-list{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border-top:1px solid var(--line);margin-bottom:60px}
.lesson{display:grid;grid-template-columns:70px 1fr;gap:18px;padding:30px 24px 30px 0;border-bottom:1px solid var(--line)}
.lesson:nth-child(odd){border-right:1px solid var(--line);padding-right:34px}
.lesson:nth-child(even){padding-left:34px}
.lesson-n{font:400 54px/.9 var(--serif);color:var(--amber);opacity:.85}
.lesson h3{font-family:var(--serif);font-weight:400;font-size:clamp(25px,2.4vw,32px);margin-bottom:10px;line-height:1.1}
.lesson p{color:var(--soft);font-size:15.5px;margin:0}
.lesson q{display:block;margin-top:12px;font:italic 400 19px/1.35 var(--serif);color:var(--amber);quotes:"“" "”"}
@media (max-width:860px){.lesson-list{grid-template-columns:1fr}.lesson:nth-child(odd){border-right:0;padding-right:0}.lesson:nth-child(even){padding-left:0}.lesson{grid-template-columns:52px 1fr}.lesson-n{font-size:42px}}
.ledger{background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:clamp(22px,3vw,40px)}
.ledger h3{font-family:var(--serif);font-weight:400;font-size:clamp(28px,3vw,40px);margin-bottom:22px}
.ledger-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.lhead{font:600 12px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;margin-bottom:12px}
.lhead.local{color:var(--teal)}.lhead.cloud{color:var(--violet)}
.lcol ul{margin:0;padding-left:18px;display:grid;gap:8px;color:var(--soft);font-size:15.5px}
.ledger-foot{margin:26px 0 0;padding-top:20px;border-top:1px solid var(--line);color:var(--soft);font-size:16px}
@media (max-width:760px){.ledger-grid{grid-template-columns:1fr}}

/* ---------- build ---------- */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:40px}
.tier{background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:18px;padding:24px}
.tier-n{font:600 11px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--amber)}
.tier h3{font-family:var(--serif);font-weight:400;font-size:30px;margin:10px 0 14px}
.tier ul{margin:0;padding-left:18px;color:var(--soft);font-size:15px;display:grid;gap:7px}
@media (max-width:900px){.tiers{grid-template-columns:1fr}}
.stack h3{font-family:var(--serif);font-weight:400;font-size:clamp(28px,3vw,40px);margin-bottom:18px}
.stack-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.tool{display:block;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 16px;color:var(--text);transition:border-color .2s,transform .2s var(--ease)}
.tool:hover{text-decoration:none;border-color:var(--amber);transform:translateY(-2px)}
.tool b{display:block;font-size:15px}
.tool span{display:block;font:500 11.5px/1.4 var(--mono);color:var(--dim);margin-top:4px}
.tool small{display:inline-block;font:600 9.5px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--c,var(--teal));margin-bottom:8px}
@media (max-width:1000px){.stack-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:460px){.stack-grid{grid-template-columns:1fr}}
.glossary{margin-top:40px;border:1px solid var(--line);border-radius:18px;background:var(--panel);overflow:hidden}
.glossary summary{cursor:pointer;padding:20px 24px;font:400 26px/1.1 var(--serif);list-style:none;display:flex;flex-wrap:wrap;gap:6px 16px;align-items:baseline}
.glossary summary::-webkit-details-marker{display:none}
.glossary summary::before{content:"+";font:500 20px/1 var(--mono);color:var(--amber);width:18px}
.glossary[open] summary::before{content:"–"}
.glossary summary span{font:500 12px/1.3 var(--mono);color:var(--dim)}
.glossary dl{margin:0;padding:0 24px 24px;display:grid;grid-template-columns:200px 1fr;gap:12px 24px}
.glossary dt{font:600 13px/1.5 var(--mono);color:var(--amber)}
.glossary dd{margin:0;color:var(--soft);font-size:15px}
@media (max-width:640px){.glossary dl{grid-template-columns:1fr;gap:4px}.glossary dd{margin-bottom:12px}}

/* ---------- outro / footer ---------- */
.outro{position:relative;min-height:80svh;display:grid;place-items:center;text-align:center;padding:120px var(--gutter);overflow:hidden;
  background:radial-gradient(ellipse 60% 50% at 50% 55%,rgba(255,150,60,.16),transparent 70%)}
.outro::before{content:"";position:absolute;left:50%;top:50%;width:min(900px,120vw);aspect-ratio:1;transform:translate(-50%,-50%);border-radius:50%;border:1px solid rgba(255,180,84,.12);box-shadow:0 0 0 60px rgba(255,180,84,.02),0 0 0 140px rgba(255,180,84,.015)}
.outro-inner{position:relative;max-width:820px}
.outro h2{font-size:clamp(46px,8vw,110px);margin:10px 0 24px}
.outro p{color:var(--soft);font-size:clamp(17px,1.6vw,20px);max-width:600px;margin:0 auto 34px}
.outro .hero-cta{justify-content:center}
.footer{border-top:1px solid var(--line);padding:36px var(--gutter) 120px;display:grid;grid-template-columns:200px 1fr;gap:24px;max-width:calc(var(--maxw) + 2*var(--gutter));margin:0 auto;font-size:14px;color:var(--dim)}
.footer b{color:var(--soft)}
.linklike{background:none;border:0;padding:0;color:var(--amber);font:inherit;text-decoration:underline;text-underline-offset:3px}
@media (max-width:700px){.footer{grid-template-columns:1fr}}

/* ---------- on-air bar ---------- */
.onair{position:fixed;left:50%;bottom:16px;transform:translateX(-50%);z-index:60;width:min(980px,calc(100% - 24px));display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;background:rgba(14,17,22,.92);backdrop-filter:blur(16px) saturate(1.4);border:1px solid var(--line2);border-radius:18px;padding:12px 14px 16px 18px;box-shadow:0 20px 60px -20px #000;animation:rise .5s var(--ease)}
.onair[hidden]{display:none}
@keyframes rise{from{transform:translate(-50%,30px);opacity:0}}
.oa-left{display:flex;align-items:center;gap:12px;min-width:0}
.oa-lamp{width:12px;height:12px;border-radius:50%;background:var(--red);box-shadow:0 0 14px var(--red);animation:pulse 1.6s ease-in-out infinite;flex:none}
.onair.paused .oa-lamp{animation:none;background:#5a2420;box-shadow:none}
@keyframes pulse{50%{opacity:.45}}
.oa-kicker{margin:0;font:600 10px/1 var(--mono);letter-spacing:.16em;color:var(--red)}
.oa-title{margin:4px 0 0;font:400 20px/1.1 var(--serif);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.oa-caption{margin:0;font-size:14.5px;line-height:1.45;color:var(--dim);max-height:4.4em;overflow:hidden}
.oa-caption .w{transition:color .15s}
.oa-caption .w.said{color:var(--text)}
.oa-controls{display:flex;gap:4px}
.oa-controls button{width:38px;height:38px;border-radius:50%;border:1px solid var(--line2);background:var(--panel);font-size:13px}
.oa-controls button:hover{border-color:var(--amber);color:var(--amber)}
.oa-progress{position:absolute;left:18px;right:18px;bottom:7px;height:2px;background:var(--line);border-radius:2px;overflow:hidden}
.oa-progress span{display:block;height:100%;width:0;background:var(--amber)}
@media (max-width:760px){.onair{grid-template-columns:1fr auto;gap:8px 12px}.oa-caption{grid-column:1/-1;grid-row:2;font-size:13.5px;max-height:3em}.oa-title{font-size:17px}}

/* ---------- dialog ---------- */
dialog{background:var(--panel);color:var(--text);border:1px solid var(--line2);border-radius:20px;max-width:640px;width:calc(100% - 32px);padding:30px 30px 24px}
dialog::backdrop{background:rgba(5,6,8,.72);backdrop-filter:blur(4px)}
dialog h2{font-size:clamp(32px,5vw,44px);margin-bottom:16px}
dialog p{color:var(--soft);font-size:15px}
.dialog-close{position:absolute;right:14px;top:12px;background:none;border:0;font-size:28px;color:var(--dim)}

/* ---------- motion prefs ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero-media img{animation:none;transform:scale(1.05)}
  .reveal{opacity:1;transform:none;transition:none}
  .leds i,.oa-lamp{animation:none}
  .baton,.stage-card,.fader::after{transition:none}
}