:root{--bg:#f6f7f9;--bg2:#eceff3;--card:#fff;--ink:#11161d;--ink2:#56606e;--line:rgba(0,0,0,.1);--acc:#0f766e;--onacc:#fff;--ok:#15803d;--warn:#b4441c;--chip:#dff3ef}
[data-theme=dark]{--bg:#0a0e13;--bg2:#10161e;--card:#141b25;--ink:#e9eef5;--ink2:#97a3b4;--line:rgba(233,238,245,.12);--acc:#3fd1bf;--onacc:#04201c;--ok:#5fd18a;--warn:#ff8f66;--chip:#12302d}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--acc)}
.wrap{max-width:1040px;margin:0 auto;padding:0 18px}
nav{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:56px;gap:8px}
.brand{font-weight:800;font-size:19px;letter-spacing:-.02em;color:var(--ink);text-decoration:none;display:flex;align-items:center;gap:8px;white-space:nowrap}
.brand i{display:inline-block;width:22px;height:22px;border-radius:7px;background:var(--acc)}
.tg{display:flex;gap:6px;align-items:center}
.btn-s{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:999px;padding:6px 11px;font-size:13px;font-weight:600;cursor:pointer;text-decoration:none;white-space:nowrap}
.btn{display:inline-block;border:0;border-radius:12px;padding:13px 20px;font-weight:700;font-size:16px;cursor:pointer;text-decoration:none;background:var(--acc);color:var(--onacc)}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.hero{position:relative;padding:56px 0 44px;overflow:hidden;background:radial-gradient(circle at 85% 0%,color-mix(in srgb,var(--acc) 28%,transparent),transparent 55%),linear-gradient(180deg,var(--bg2),var(--bg))}
.eyebrow{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--acc);font-weight:700;margin-bottom:10px}
h1{font-size:clamp(32px,8vw,56px);line-height:1.05;letter-spacing:-.03em;margin-bottom:14px}
h2{font-size:clamp(25px,6vw,36px);letter-spacing:-.02em;line-height:1.12;margin-bottom:10px}
h3{font-size:18px;margin-bottom:6px}
p{color:var(--ink2)}
.lead{font-size:18px;max-width:660px;margin-bottom:22px}
.ctas{display:flex;gap:10px;flex-wrap:wrap}
section{padding:48px 0}
.alt{background:var(--bg2)}
.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin-top:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px}
a.card{text-decoration:none;color:inherit;display:block;transition:border-color .15s}
a.card:hover{border-color:var(--acc)}
.num{font-size:13px;font-weight:800;color:var(--acc);letter-spacing:.06em}
.src{font-size:12px;margin-top:8px;color:var(--ink2)}
.steps{counter-reset:s;display:grid;gap:12px;margin-top:16px}
.steps li{list-style:none;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 14px 14px 52px;position:relative;color:var(--ink2)}
.steps li b{color:var(--ink)}
.steps li::before{counter-increment:s;content:counter(s);position:absolute;left:14px;top:14px;width:26px;height:26px;border-radius:50%;background:var(--acc);color:var(--onacc);font-weight:800;display:grid;place-items:center;font-size:14px}
form{display:grid;gap:12px;margin-top:16px}
label{font-size:14px;font-weight:600}
input,select,textarea{width:100%;padding:12px;border-radius:10px;border:1px solid var(--line);background:var(--card);color:var(--ink);font:inherit;margin-top:4px}
textarea{min-height:96px}
.msg{font-size:14px;font-weight:600}.msg.ok{color:var(--ok)}.msg.err{color:var(--warn)}
footer{padding:28px 0 40px;border-top:1px solid var(--line);font-size:13px;color:var(--ink2)}
.pill{display:inline-block;font-size:12px;font-weight:700;padding:3px 9px;border-radius:999px;background:var(--chip);color:var(--acc);margin:0 4px 4px 0}
.pill.warn{color:var(--warn)}
.band{background:var(--chip);border-radius:20px;padding:22px}
.toast{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:12px;font-size:14px;font-weight:600;opacity:0;transition:opacity .2s;z-index:99;pointer-events:none;max-width:90vw;text-align:center}
.toast.on{opacity:1}
.list{list-style:none;display:grid;gap:8px;margin-top:10px}
.list li{padding-left:28px;position:relative;color:var(--ink2)}
.list li::before{content:"✓";position:absolute;left:4px;top:0;color:var(--ok);font-weight:800}
.list.x li::before{content:"✕";color:var(--warn)}
details{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin-bottom:10px}
summary{font-weight:700;cursor:pointer;list-style:none}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";float:right;color:var(--acc);font-weight:800}
details[open] summary::after{content:"−"}
details p{margin-top:8px}
.banner{background:var(--acc);color:var(--onacc);text-align:center;font-size:12px;font-weight:800;padding:5px 10px;letter-spacing:.03em}
.crumb{font-size:14px;margin:18px 0 6px}
.org{display:grid;gap:12px;margin-top:18px}
.org .ceo{max-width:360px;margin:0 auto;text-align:center;border:2px solid var(--acc)}
.org .cos{max-width:420px;margin:0 auto;text-align:center}
.org .line{width:2px;height:18px;background:var(--acc);margin:0 auto;opacity:.6}
.org .team{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.org .card{padding:14px}
.org .card h3{font-size:16px}
.org .card p{font-size:14px}
.tagh{font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--acc)}
.chap{font-size:17px}
.chap p,.chap li{color:var(--ink2)}
.chap h2{margin-top:28px}
.chap h3{margin-top:18px}
.chap ul,.chap ol{padding-left:22px;margin:8px 0}
.chap li{margin-bottom:6px}
pre{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px;overflow-x:auto;font-size:13px;line-height:1.5;color:var(--ink);white-space:pre-wrap;margin:10px 0}
.lock{position:relative;margin-top:22px}
.lock .fade{filter:blur(4px);opacity:.55;pointer-events:none;user-select:none}
.lock .cta{position:absolute;inset:0;display:grid;place-items:center;text-align:center;padding:16px}
.lock .cta .card{max-width:420px;box-shadow:0 10px 40px rgba(0,0,0,.25)}
.toc{display:grid;gap:8px;margin-top:12px}
.toc a{display:flex;gap:10px;align-items:baseline;text-decoration:none;color:var(--ink);padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--card)}
.toc a b{color:var(--acc);min-width:24px}
@media(max-width:560px){.nav .hide-sm{display:none}.brand{font-size:17px}}
/* founder profile (real person, public info) */
.fd-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px}
.fd-top{display:flex;gap:14px;align-items:center}
.fd-img{width:96px;height:96px;border-radius:50%;object-fit:cover;border:3px solid var(--acc);flex:0 0 auto}
.fd-badge{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.04em;padding:3px 9px;border-radius:999px;background:#1f7a46;color:#fff}
.fd-name{font-size:22px;margin:4px 0 2px}
.fd-role{font-size:14px;color:var(--ink2)}
.fd-line{font-size:18px;font-weight:700;color:var(--ink);margin:14px 0 6px}
.fd-bio{padding-left:20px;margin:6px 0 10px;color:var(--ink2)}.fd-bio li{margin-bottom:6px}
.fd-links{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.fd-links a{font-size:13px;font-weight:700;text-decoration:none;border:1px solid var(--line);border-radius:999px;padding:6px 11px;color:var(--ink);background:var(--bg2)}
.fd-more{font-weight:700}
.fd-src{font-size:12px;color:var(--ink2);margin-top:12px}

/* Vision UX pass (ux-standards.md): tokens, tap targets, single-row nav, collapsing header */
:root{--z-sticky:10;--z-header:20;--z-popover:30;--z-dialog:40;--z-toast:50;--warn:#a63c16}
[data-theme=dark]{--warn:#ff8f66}
html{scroll-padding-top:116px}
button,input,select,textarea{font-family:inherit}
.wrap{padding:0 16px}
:focus-visible{outline:2px solid var(--acc);outline-offset:2px}
.skip{position:absolute;left:8px;top:-60px;z-index:var(--z-toast);background:var(--acc);color:var(--onacc);padding:12px 16px;border-radius:10px;font-weight:700;text-decoration:none}
.skip:focus{top:8px}
header.site{position:sticky;top:0;z-index:var(--z-header);background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:transform .2s ease}
header.site nav{position:static;background:none;backdrop-filter:none;-webkit-backdrop-filter:none;border-bottom:0;z-index:auto}
header.site.tuck{transform:translateY(-56px)}
.brand{min-height:44px}
.btn-s{min-height:44px;min-width:44px;padding:10px 14px;font-size:14px;display:inline-flex;align-items:center;justify-content:center}
.sub{border-top:1px solid var(--line)}
.sub .row{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;scroll-snap-type:x proximity}
.sub .row::-webkit-scrollbar{display:none}
.sub a{flex:0 0 auto;display:inline-flex;align-items:center;min-height:44px;padding:0 12px;font-size:14px;font-weight:600;color:var(--ink2);text-decoration:none;white-space:nowrap;border-bottom:2px solid transparent;scroll-snap-align:start}
.sub a:first-child{margin-left:-12px}
.sub a:hover{color:var(--ink)}
.sub a[aria-current]{color:var(--ink);font-weight:800;border-bottom-color:var(--acc)}
.toast{z-index:var(--z-toast);bottom:calc(18px + env(safe-area-inset-bottom))}
.src{font-size:14px}
footer{font-size:14px}
footer a,.crumb a,.fd-more{display:inline-flex;align-items:center;gap:4px;min-height:44px}
pre{font-size:14px}
.tagh,.fd-badge{font-size:12px}
.fd-links{gap:8px}
.fd-links a{display:inline-flex;align-items:center;min-height:44px;padding:8px 14px;font-size:14px}
details{padding:0}
summary{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:44px;padding:10px 16px}
summary::after{float:none;flex:0 0 auto}
details p{margin:0;padding:0 16px 14px}
.capped>.over{display:none}
.showall{margin-top:16px}
@media (prefers-reduced-motion:reduce){header.site{transition:none}html{scroll-behavior:auto}*{transition-duration:.01ms!important}}

/* Share button + sheet (mission-control company/design/components/share-sheet, ux-standards section 15). Site palette via --ss-* */
:root{--ss-bg:#ffffff;--ss-card:#f6f7f9;--ss-line:#c9d0d9;--ss-fg:var(--ink);--ss-muted:var(--ink2);--ss-accent:var(--acc);--ss-accent-fg:var(--onacc);--ss-focus:var(--acc);--ss-ok:var(--ok);--ss-scrim:rgba(4,8,12,.62);--ss-radius:20px;
  --ss-btn-bg:var(--card);--ss-btn-fg:var(--ink);--ss-btn-line:var(--line);--ss-btn-radius:999px;--ss-btn-hover:var(--bg2);--ss-z:var(--z-dialog,40)}
[data-theme=dark]{--ss-bg:#10161e;--ss-card:#18212c;--ss-line:#2c3846}
.ctas .ss-btn--hero{min-height:48px;border-radius:12px;padding:0 18px}
/* Header fits brand + ES + theme + share at 360px (no wrap, no horizontal scroll) */
@media (max-width:400px){.brand i{display:none}.brand{font-size:16px}.tg{gap:4px}}
@media (max-width:340px){.brand{font-size:14px}.btn-s{padding:10px 8px}}
/* Heading order (axe): headings that follow h1 directly are h2, kept at their old visual size */
h2.fd-name{letter-spacing:normal;line-height:1.3}
.h3s{font-size:18px;margin-bottom:6px;letter-spacing:normal;line-height:1.3}