:root{
  --primer:#cfcdc6;      /* page: primer grey */
  --primer-2:#bdbab2;    /* rules, quiet surfaces */
  --sheet:#e6e4de;       /* raised surfaces */
  --ink:#1c1f22;         /* text, tyres */
  --steel:#2b3840;       /* ribbon, headers */
  --signal:#f0b82e;      /* the one accent: caliper yellow */
  --muted:#565a5e;
  --ribbon-h:68px;
  --font:"Archivo","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-snap-type:y proximity;background:var(--primer)}
body{font-family:var(--font);font-variation-settings:"wdth" 100;color:var(--ink);background:var(--primer);-webkit-font-smoothing:antialiased;overflow-x:hidden;line-height:1.5}
a{color:inherit}
svg{display:block}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
:focus-visible{outline:3px solid var(--signal);outline-offset:3px;border-radius:6px}

/* ---------- Ribbon ---------- */
.ribbon{position:fixed;inset:0 0 auto 0;z-index:50;height:calc(var(--ribbon-h) + env(safe-area-inset-top,0px));padding:env(safe-area-inset-top,0px) clamp(14px,4vw,44px) 0;display:flex;align-items:center;justify-content:space-between;gap:16px;background:var(--steel);color:var(--primer)}
.brand{font-weight:850;font-variation-settings:"wdth" 125;font-size:clamp(15px,1.8vw,20px);letter-spacing:-.01em;text-decoration:none;white-space:nowrap}
.ribbon nav{display:flex;align-items:center;gap:4px}
.ribbon nav a{position:relative;width:48px;height:48px;display:grid;place-items:center;border-radius:12px;color:#aeb6bb;text-decoration:none;transition:background .2s,color .2s}
.ribbon nav a svg{width:25px;height:25px}
.ribbon nav a:hover{color:var(--primer);background:rgba(255,255,255,.07)}
.ribbon nav a.active{background:var(--signal);color:var(--ink)}
.ribbon .sep{width:1px;height:26px;background:rgba(255,255,255,.18);margin:0 8px}
.tip{position:absolute;top:calc(100% + 8px);left:50%;transform:translate(-50%,-4px);background:var(--ink);color:var(--primer);font-size:12px;padding:4px 8px;border-radius:6px;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .15s,transform .15s}
.ribbon nav a:hover .tip,.ribbon nav a:focus-visible .tip{opacity:1;transform:translate(-50%,0)}

/* ---------- Wheel track ---------- */
.track{position:relative;height:400vh}
.anchor{position:absolute;left:0;width:1px;height:1px;scroll-snap-align:start}
.stage{position:sticky;top:0;height:100vh;height:100dvh;overflow:hidden;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);align-items:center;gap:clamp(20px,4vw,72px);padding:calc(var(--ribbon-h) + env(safe-area-inset-top,0px) + 20px) clamp(18px,5vw,80px) calc(28px + env(safe-area-inset-bottom,0px))}
.wheel-wrap{width:min(100%,calc(100vh - var(--ribbon-h) - 60px));aspect-ratio:1;justify-self:center;margin-left:-6vw}
.wheel{width:100%;height:100%;overflow:visible}
.wheel .pointer{fill:var(--signal);stroke:var(--ink);stroke-width:1.5;stroke-linejoin:round}
.marker{cursor:pointer}
.marker circle{fill:var(--sheet);stroke:var(--ink);stroke-width:1.5;transition:fill .25s}
.marker use{color:var(--ink)}
.marker.active circle{fill:var(--signal)}

.panels{position:relative;height:min(600px,100%)}
.panel{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;gap:22px;opacity:0;visibility:hidden;will-change:opacity,transform}
.panel h1,.panel h2{font-weight:900;font-variation-settings:"wdth" 125;font-size:clamp(36px,4vw,72px);line-height:.94;letter-spacing:-.035em}
.panel h1{font-size:clamp(30px,3.4vw,58px)}
.lede{font-size:clamp(16px,1.35vw,19px);max-width:44ch;color:var(--muted)}
.features{list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 28px;max-width:560px;border-top:2px solid var(--ink)}
.features li{padding:11px 0;border-bottom:1px solid var(--primer-2);font-weight:550;font-size:15px}
.actions{display:flex;flex-wrap:wrap;gap:10px}
.btn{display:inline-flex;align-items:center;height:48px;padding:0 22px;border-radius:999px;background:var(--ink);color:var(--primer);font-weight:650;font-size:15px;text-decoration:none;transition:transform .15s}
.btn:hover{transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 2px var(--ink)}
.quick{display:flex;flex-wrap:wrap;gap:10px}
.quick a{display:flex;align-items:center;gap:10px;padding:10px 16px 10px 12px;border-radius:999px;background:var(--sheet);text-decoration:none;font-weight:650;font-size:15px;box-shadow:inset 0 0 0 1px var(--primer-2)}
.quick a svg{width:22px;height:22px}
.quick a:hover{background:var(--signal)}
.scroll-hint{position:absolute;left:50%;bottom:calc(18px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);font-size:13px;color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:6px;transition:opacity .3s}
.scroll-hint::after{content:"";width:2px;height:28px;background:linear-gradient(var(--ink),transparent);animation:drip 1.8s ease-in-out infinite}
@keyframes drip{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---------- About ---------- */
.about{min-height:100vh;scroll-snap-align:start;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:clamp(24px,5vw,80px);align-items:center;padding:calc(var(--ribbon-h) + 48px) clamp(18px,5vw,80px) calc(120px + env(safe-area-inset-bottom,0px));background:var(--steel);color:var(--primer)}
.about h2{font-weight:900;font-variation-settings:"wdth" 125;font-size:clamp(40px,6vw,92px);line-height:.94;letter-spacing:-.035em;margin-bottom:24px}
.about-copy p{max-width:48ch;font-size:clamp(16px,1.35vw,19px);color:#c3c9cc;margin-bottom:14px}
.call-big{display:flex;align-items:center;gap:16px;padding:22px 26px;border-radius:20px;background:var(--signal);color:var(--ink);text-decoration:none;font-weight:850;font-variation-settings:"wdth" 115;font-size:clamp(24px,2.6vw,36px);margin-bottom:28px}
.call-big svg{width:34px;height:34px;flex:none}
.contact dl div{display:grid;grid-template-columns:90px 1fr;gap:12px;padding:14px 0;border-top:1px solid rgba(255,255,255,.14)}
.contact dt{color:#98a2a7;font-size:14px}
.contact dd{font-weight:550}

/* ---------- Assistant ---------- */
.assistant{position:fixed;right:clamp(12px,2vw,24px);bottom:calc(14px + env(safe-area-inset-bottom,0px));z-index:60;display:flex;flex-direction:column;align-items:flex-end}
.launcher{width:60px;height:60px;border-radius:50%;background:var(--signal);color:var(--ink);display:grid;place-items:center;box-shadow:0 8px 24px rgba(28,31,34,.3)}
.launcher svg{width:26px;height:26px}
.chat{display:none;width:min(372px,calc(100vw - 24px));height:min(540px,calc(100dvh - var(--ribbon-h) - 40px));flex-direction:column;background:var(--sheet);border-radius:20px;overflow:hidden;box-shadow:0 20px 50px rgba(28,31,34,.35),0 0 0 1px rgba(28,31,34,.12);transform-origin:bottom right}
.assistant.open .chat{display:flex;animation:pop .22s ease-out}
.assistant.open .launcher{display:none}
@keyframes pop{from{opacity:0;transform:scale(.92)}to{opacity:1;transform:none}}
.chat-head{display:flex;align-items:center;gap:10px;padding:14px 12px 14px 16px;background:var(--steel);color:var(--primer)}
.chat-title{flex:1;min-width:0;display:flex;flex-direction:column;line-height:1.25}
.chat-title strong{font-weight:750}
.chat-title span{font-size:12.5px;color:#a9b2b7}
.status{width:10px;height:10px;border-radius:50%;background:#7fc47a;flex:none}
.assistant[data-state="listening"] .status{background:var(--signal);animation:pulse 1s infinite}
.assistant[data-state="thinking"] .status{background:#a9b2b7;animation:pulse .7s infinite}
@keyframes pulse{50%{opacity:.35}}
.icon-btn{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;flex:none}
.icon-btn svg{width:21px;height:21px}
.chat-head .icon-btn:hover{background:rgba(255,255,255,.1)}
.voice[aria-pressed="false"] .waves{opacity:.25}
.voice[aria-pressed="true"]{color:var(--signal)}
.log{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px;overscroll-behavior:contain}
.msg{max-width:86%;padding:10px 14px;border-radius:16px;font-size:14.5px;line-height:1.45;white-space:pre-wrap;word-wrap:break-word}
.msg.bot{align-self:flex-start;background:#fff;border-bottom-left-radius:5px}
.msg.user{align-self:flex-end;background:var(--ink);color:var(--primer);border-bottom-right-radius:5px}
.msg.note{align-self:center;background:none;padding:0;font-size:12.5px;color:var(--muted)}
.typing{display:flex;gap:4px}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--muted);animation:pulse 1s infinite}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
.chips{display:flex;gap:6px;padding:0 12px 10px;overflow-x:auto;scrollbar-width:none}
.chips button{flex:none;font-size:13px;padding:7px 12px;border-radius:999px;background:#fff;box-shadow:inset 0 0 0 1px var(--primer-2)}
.chips button:hover{background:var(--signal)}
.composer{display:flex;align-items:center;gap:6px;padding:10px 10px 12px 14px;border-top:1px solid var(--primer-2)}
.composer input{flex:1;min-width:0;height:42px;border:0;background:transparent;font:inherit;font-size:16px;color:var(--ink);outline:none}
.composer .mic,.composer .send{background:#fff;box-shadow:inset 0 0 0 1px var(--primer-2)}
.composer .send{background:var(--ink);color:var(--primer);box-shadow:none}
.composer .mic.listening{background:var(--signal);box-shadow:none;animation:pulse 1s infinite}

@media (min-width:1100px){
  .stage{transition:padding-right .3s ease}
  body.chat-docked .stage{padding-right:calc(372px + clamp(24px,3vw,48px))}
}
/* ---------- Small screens ---------- */
@media (max-width:860px){
  :root{--ribbon-h:60px}
  .brand{font-size:16px}
  .brand-rest{display:none}
  .ribbon nav a{width:42px;height:42px}
  .ribbon nav a svg{width:22px;height:22px}
  .ribbon .sep{margin:0 4px}
  .tip{display:none}
  .stage{grid-template-columns:1fr;grid-template-rows:auto 1fr;align-items:start;gap:8px}
  .wheel-wrap{width:min(64vw,34vh);margin:0}
  .panels{height:100%}
  .panel{justify-content:flex-start;gap:14px;padding-top:6px}
  .features{grid-template-columns:1fr 1fr;gap:0 14px}
  .features li{font-size:13px;padding:7px 0}
  .scroll-hint{display:none}
  .about{grid-template-columns:1fr}
  .assistant.open{left:12px;right:12px;align-items:stretch}
  .assistant.open .chat{width:auto;height:min(460px,62dvh)}
}
@media (max-width:860px) and (max-height:700px){ .features{display:none} }
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}