:root{
  --bg:#fbf8f4; --surface:#ffffff; --ink:#1c1714; --muted:#6b625b; --line:#e9e2da;
  --ember:#e2552b; --ember-soft:#fde9e1; --deep:#2a211c; --ok:#2f8f5b;
  --radius:16px;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#14110f; --surface:#1d1916; --ink:#f3ece6; --muted:#a59a91; --line:#2f2925;
    --ember:#ff7a4d; --ember-soft:#3a2219; --deep:#0e0c0a; --ok:#5cc58a;
  }
}
:root[data-theme="dark"]{
  --bg:#14110f; --surface:#1d1916; --ink:#f3ece6; --muted:#a59a91; --line:#2f2925;
  --ember:#ff7a4d; --ember-soft:#3a2219; --deep:#0e0c0a; --ok:#5cc58a;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font:16px/1.6 Inter,system-ui,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
@media(min-width:720px){.wrap{padding:0 32px}}

/* nav */
nav{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.01em;text-decoration:none;font-size:18px}
.logo-mark{width:26px;height:26px;border-radius:8px;background:radial-gradient(circle at 35% 35%,#ffb27a,var(--ember) 55%,#9b2f12);box-shadow:0 0 18px color-mix(in srgb,var(--ember) 45%,transparent)}
.nav-links{display:flex;gap:24px;font-size:14px;color:var(--muted)}
.nav-links a{text-decoration:none}
.nav-links a:hover{color:var(--ink)}
@media(max-width:600px){.nav-links .hide-sm{display:none}}

/* hero */
.hero{padding:88px 0 64px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--ember);background:var(--ember-soft);padding:6px 12px;border-radius:999px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--ember)}
h1{font-family:Fraunces,Georgia,serif;font-weight:600;font-size:clamp(38px,6vw,64px);line-height:1.05;letter-spacing:-.02em;margin:22px 0 20px;max-width:820px}
h1 em{font-style:normal;color:var(--ember)}
.lead{font-size:clamp(17px,2vw,20px);color:var(--muted);max-width:640px}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.btn{display:inline-block;padding:12px 20px;border-radius:10px;font-weight:600;font-size:15px;text-decoration:none;border:1px solid var(--line)}
.btn.primary{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.btn:hover{transform:translateY(-1px)}

/* sections */
section{padding:64px 0}
.kicker{font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
h2{font-family:Fraunces,Georgia,serif;font-weight:600;font-size:clamp(28px,4vw,40px);letter-spacing:-.015em;line-height:1.15;margin:8px 0 16px}
.sub{color:var(--muted);max-width:640px}

.product{display:grid;gap:40px;align-items:center;margin-top:40px;background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:28px}
@media(min-width:900px){.product{grid-template-columns:1fr 1fr;padding:44px}.product.flip .visual{order:-1}}
.tag{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}
.tag.live .dot{background:var(--ok)}
.tag.dev .dot{background:#d9a028}
.product h3{font-family:Fraunces,Georgia,serif;font-size:30px;font-weight:600;margin:14px 0 4px;letter-spacing:-.01em}
.product .one{font-weight:600;margin-bottom:12px}
.product p{color:var(--muted)}
.feats{list-style:none;margin-top:20px;display:grid;gap:10px}
.feats li{display:flex;gap:10px;font-size:15px}
.feats li::before{content:"";flex:none;width:18px;height:18px;margin-top:3px;border-radius:6px;background:var(--ember-soft);box-shadow:inset 0 0 0 5px var(--ember-soft),inset 0 0 0 9px var(--ember)}

/* illustrative visuals (no data) */
.visual{background:var(--bg);border:1px solid var(--line);border-radius:16px;padding:18px;min-height:280px;position:relative;overflow:hidden}
.win{display:flex;gap:6px;margin-bottom:16px}
.win i{width:9px;height:9px;border-radius:50%;background:var(--line)}
.row{display:flex;gap:10px;margin-bottom:10px}
.blk{height:10px;border-radius:6px;background:var(--line)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px;flex:1}
.bars{display:flex;align-items:flex-end;gap:7px;height:96px;margin-top:10px}
.bars span{flex:1;border-radius:5px 5px 2px 2px;background:color-mix(in srgb,var(--ember) 30%,var(--line))}
.bars span.hi{background:var(--ember)}
.note{display:flex;gap:10px;align-items:flex-start;background:var(--ember-soft);border-radius:12px;padding:12px;margin-top:12px}
.note b{flex:none;width:22px;height:22px;border-radius:7px;background:var(--ember)}
.approve{display:flex;gap:8px;margin-top:10px}
.approve span{font-size:12px;font-weight:600;padding:6px 12px;border-radius:8px;border:1px solid var(--line);background:var(--surface)}
.approve span.go{background:var(--ink);color:var(--bg);border-color:var(--ink)}

/* truck plan visual */
.truck{position:relative;height:150px;border:2px solid var(--muted);border-radius:8px;margin:18px 50px 10px 0;display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(3,1fr);gap:4px;padding:6px}
.truck::after{content:"";position:absolute;right:-46px;top:40px;width:40px;height:106px;border:2px solid var(--muted);border-radius:6px 14px 6px 6px}
.truck div{border-radius:4px}
.c1{background:var(--ember);grid-column:span 2;grid-row:span 2}
.c2{background:color-mix(in srgb,var(--ember) 55%,var(--surface));grid-column:span 2}
.c3{background:color-mix(in srgb,var(--ember) 30%,var(--surface));grid-column:span 2;grid-row:span 3}
.c4{background:color-mix(in srgb,var(--ink) 18%,var(--surface));grid-column:span 2;grid-row:span 2}
.c5{background:color-mix(in srgb,var(--ember) 55%,var(--surface))}
.c6{background:color-mix(in srgb,var(--ink) 30%,var(--surface))}
.roll{border-radius:50%!important;background:color-mix(in srgb,var(--ink) 18%,var(--surface))}
.wheels{display:flex;gap:40px;padding-left:20px}
.wheels i{width:22px;height:22px;border-radius:50%;background:var(--muted)}
.legend{display:flex;flex-wrap:wrap;gap:14px;font-size:12px;color:var(--muted);margin-top:14px}
.legend span{display:inline-flex;align-items:center;gap:6px}
.legend b{width:10px;height:10px;border-radius:3px;display:inline-block}

/* principles */
.grid3{display:grid;gap:16px;margin-top:32px}
@media(min-width:800px){.grid3{grid-template-columns:repeat(3,1fr)}}
.pr{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.pr .n{font-family:Fraunces,Georgia,serif;font-size:22px;color:var(--ember)}
.pr h4{font-size:17px;margin:8px 0 6px}
.pr p{color:var(--muted);font-size:15px}

/* contact */
.contact{background:var(--deep);color:#f3ece6;border-radius:24px;padding:44px 28px;text-align:center;position:relative;overflow:hidden}
.contact::before{content:"";position:absolute;inset:auto -20% -60% -20%;height:120%;background:radial-gradient(ellipse at center,color-mix(in srgb,#ff7a4d 35%,transparent),transparent 60%)}
.contact > *{position:relative}
.contact h2{color:#fff}
.contact p{color:#cfc4bb;max-width:560px;margin:0 auto}
.contact .btn{background:#fff;color:#1c1714;border-color:#fff;margin-top:24px}

footer{padding:40px 0 56px;color:var(--muted);font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}

/* multi-page additions */
.nav-links a.active{color:var(--ink);font-weight:600}
.page-hero{padding:72px 0 24px}
.page-hero h1{font-size:clamp(34px,5vw,54px)}
.crumbs{font-size:13px;color:var(--muted)}
.crumbs a{text-decoration:none}
.steps{display:grid;gap:16px;margin-top:32px;counter-reset:s}
@media(min-width:800px){.steps{grid-template-columns:repeat(4,1fr)}}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;counter-increment:s}
.step::before{content:counter(s,decimal-leading-zero);font-family:Fraunces,Georgia,serif;color:var(--ember);font-size:20px}
.step h4{font-size:16px;margin:8px 0 6px}
.step p{color:var(--muted);font-size:14px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.chips span{font-size:13px;font-weight:500;padding:7px 12px;border-radius:999px;background:var(--surface);border:1px solid var(--line)}
.split{display:grid;gap:32px;margin-top:32px}
@media(min-width:860px){.split{grid-template-columns:1fr 1fr}}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.panel h4{font-size:17px;margin-bottom:10px}
.panel ul{padding-left:18px;color:var(--muted);display:grid;gap:6px;font-size:15px}
.faq{margin-top:28px;display:grid;gap:12px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 20px}
.faq summary{cursor:pointer;font-weight:600;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--muted)}
.faq details[open] summary::after{content:"–"}
.faq p{color:var(--muted);margin-top:10px;font-size:15px}
.roadmap{margin-top:32px;display:grid;gap:12px}
.phase{display:grid;grid-template-columns:110px 1fr;gap:16px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:18px 20px}
.phase b{font-size:13px;color:var(--ember);text-transform:uppercase;letter-spacing:.06em}
.phase p{color:var(--muted);font-size:15px}
.phase h4{font-size:16px;margin-bottom:4px}
@media(max-width:560px){.phase{grid-template-columns:1fr;gap:6px}}
.more{display:inline-block;margin-top:22px;font-weight:600;color:var(--ember);text-decoration:none}
.more:hover{text-decoration:underline}
.team{display:grid;gap:16px;margin-top:28px}
@media(min-width:720px){.team{grid-template-columns:repeat(3,1fr)}}
.person{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.avatar{width:48px;height:48px;border-radius:50%;background:var(--ember-soft);color:var(--ember);display:grid;place-items:center;font-weight:700;margin-bottom:12px}
.person h4{font-size:16px}
.person p{color:var(--muted);font-size:14px}
footer nav{position:static;background:none;border:0;backdrop-filter:none}
.foot-links{display:flex;gap:18px}
.foot-links a{text-decoration:none}
.nav-cta{padding:8px 14px;font-size:13px;color:var(--bg)!important}
@media(max-width:600px){.nav-links{gap:14px}.nav-links a[href="about.html"]{display:none}}
.form{display:grid;gap:16px}
.form label{display:grid;gap:6px;font-size:14px;font-weight:600}
.form input,.form select,.form textarea{font:inherit;font-weight:400;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:11px 12px;width:100%}
.form input:focus,.form select:focus,.form textarea:focus{outline:2px solid var(--ember);outline-offset:1px}
.form button{cursor:pointer;justify-self:start}
.form-note{font-size:13px;color:var(--muted)}
.nav-links{align-items:center}
.nav-cta{white-space:nowrap}
@media(max-width:600px){.nav-links a:not(.nav-cta){display:none}}
.shot{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:8px;box-shadow:0 18px 50px -24px rgba(0,0,0,.35)}
.shot img{display:block;width:100%;height:auto;border-radius:10px}
.shot figcaption{font-size:12px;color:var(--muted);padding:8px 4px 2px}
.hero-shot{margin-top:40px}
.gallery{display:grid;gap:16px;margin-top:28px;align-items:start}
@media(min-width:900px){.gallery{grid-template-columns:1fr 1fr .55fr}}
.shot.phone{max-width:300px;justify-self:center}
.demo-note{font-size:13px;color:var(--muted);margin-top:14px}
/* brand */
:root{--ember:#d4600f;--ember-soft:#fdecdc}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){--ember:#f08a3c;--ember-soft:#3a2416}}
:root[data-theme="dark"]{--ember:#f08a3c;--ember-soft:#3a2416}
.logo img{display:block}
.wm{font-weight:700;font-size:20px;letter-spacing:-.03em}
.wm b{color:var(--ember);font-weight:700}
/* diagrams */
.flow,.hub{display:flex;align-items:stretch;gap:0;margin-top:32px}
.flow .node,.hub>.node{flex:1;min-width:0}
.node{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px}
.node .nk{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.07em;margin-bottom:6px}
.node p,.node li{font-size:13px;color:var(--muted);line-height:1.45}
.node ul{list-style:none;display:grid;gap:3px}
.node.src{background:var(--bg)}
.node.db .nk{color:var(--ink)}
.node.ai{border-color:var(--ember);box-shadow:0 0 0 3px var(--ember-soft)}
.node.ai .nk{color:var(--ember)}
.node.gate{border-style:dashed;border-color:var(--ink)}
.node.out{background:var(--deep);border-color:var(--deep)}
.node.out .nk{color:#fff}.node.out li,.node.out p{color:#cfc4bb}
.node.sm{padding:10px 12px}.node.sm .nk{margin:0}
.arrow{flex:0 0 22px;position:relative}
.arrow::before{content:"";position:absolute;left:3px;right:7px;top:50%;height:2px;background:var(--muted);opacity:.6}
.arrow::after{content:"";position:absolute;right:2px;top:calc(50% - 5px);border:5px solid transparent;border-left:7px solid var(--muted);border-right:0;opacity:.8}
.hub .col{flex:1;display:grid;gap:8px;align-content:center}
@media(max-width:900px){
  .flow,.hub{flex-direction:column}
  .arrow{flex:0 0 22px}
  .arrow::before{left:50%;right:auto;top:3px;bottom:7px;width:2px;height:auto}
  .arrow::after{left:calc(50% - 5px);right:auto;top:auto;bottom:2px;border:5px solid transparent;border-top:7px solid var(--muted);border-bottom:0}
}
.ladder{margin-top:32px;display:grid;gap:10px;max-width:760px}
.rung{display:grid;grid-template-columns:48px 1fr;gap:16px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px 18px}
.rung:nth-child(2){margin-left:24px}.rung:nth-child(3){margin-left:48px}.rung:nth-child(4){margin-left:72px}
@media(max-width:600px){.rung:nth-child(n){margin-left:0}}
.rung b{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:var(--ember-soft);color:var(--ember);font-family:Fraunces,Georgia,serif;font-size:20px}
.rung h4{font-size:16px}.rung p{color:var(--muted);font-size:14px}
.never{margin-top:6px;font-size:14px;font-weight:600;padding:12px 16px;border-radius:12px;border:1px dashed var(--ember);color:var(--ember)}