/* site.css — public marketing site (home, product, developers, pilot,
   company, updates, investors, milestones, trust header/footer).
   The signed-in app uses seneca.css; do not mix the two.
   Header and footer markup is stamped by scripts/site-chrome.js. */

:root{
  --bg:#ffffff; --surface:#f5f5f6; --tint:#faf8f4;
  --ink:#1b1c26; --ink-2:#43454f; --ink-3:#6e707b;
  --line:#e4e4e8; --line-2:#d3d3da;
  --bronze:#a9793f; --bronze-deep:#7c5527; --bronze-wash:#f6efe4;
  --green:#1d6b4d;
  --sans:"Schibsted Grotesk","Segoe UI",system-ui,sans-serif;
  --wordmark:"Fraunces",Georgia,serif;
  --mono:"IBM Plex Mono",ui-monospace,Consolas,monospace;
  --wrap:1120px;
}
html[lang="ko"]{--sans:"Schibsted Grotesk","Noto Sans KR","Segoe UI",system-ui,sans-serif}
html[lang="ko"] body{word-break:keep-all;overflow-wrap:break-word}

*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;font-family:var(--sans);color:var(--ink);line-height:1.55;-webkit-font-smoothing:antialiased;background:var(--bg)}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
:focus-visible{outline:2px solid var(--bronze);outline-offset:2px;border-radius:4px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding-inline:clamp(20px,5vw,56px)}
.site-wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding-inline:clamp(20px,5vw,56px)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ── wordmark ── */
.wm{font-family:var(--wordmark);font-weight:500;font-size:25px;letter-spacing:-.01em;text-decoration:none;color:var(--ink);display:inline-flex;align-items:baseline;line-height:1}
.wm .ai{font-family:var(--sans);font-weight:700;font-size:.44em;color:#fff;background:var(--bronze);border-radius:50%;width:1.55em;height:1.55em;display:inline-flex;align-items:center;justify-content:center;margin-left:.14em;transform:translateY(.32em)}
.wm .by{font-family:var(--sans);font-size:12px;font-weight:600;color:var(--ink-3);margin-left:12px;letter-spacing:0;transform:translateY(-2px)}

/* ── header ── */
.site-header{margin:0;padding:0;position:sticky;top:0;z-index:30;background:color-mix(in srgb,#fff 93%,transparent);backdrop-filter:blur(9px);border-bottom:1px solid var(--line)}
.site-header .bar{height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.site-nav{display:flex;align-items:center;gap:clamp(14px,2vw,26px)}
.site-nav a{font-size:14px;font-weight:600;color:var(--ink-2);text-decoration:none;white-space:nowrap}
.site-nav a:hover,.site-nav a[aria-current="page"]{color:var(--ink)}
.site-nav a[aria-current="page"]{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:8px;text-decoration-color:var(--bronze)}
.site-nav .lang-toggle,.site-menu .lang-toggle{font-size:13px;font-weight:700;padding:5px 11px;border:1px solid var(--line-2);border-radius:999px;text-decoration:none}
.site-nav .cta{padding:9px 15px;border-radius:8px;background:var(--ink);color:#fff}
.site-nav .cta:hover{background:#000;color:#fff}
.site-menu{display:none;position:relative}
.site-menu summary{list-style:none;cursor:pointer;font-size:14px;font-weight:700;padding:8px 14px;border:1px solid var(--line-2);border-radius:8px}
.site-menu summary::-webkit-details-marker{display:none}
.site-menu .panel{position:absolute;right:0;top:calc(100% + 10px);min-width:220px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 16px 40px -16px rgba(27,28,38,.25);padding:8px;display:grid}
.site-menu .panel a{padding:10px 12px;border-radius:8px;text-decoration:none;font-weight:600;font-size:15px}
.site-menu .panel a:hover{background:var(--surface)}
.site-menu .panel a[aria-current="page"]{color:var(--bronze-deep)}
.site-menu .panel .lang-toggle{justify-self:start;margin:6px 12px}
@media (max-width:960px){.site-nav .opt{display:none}}
@media (max-width:760px){.site-nav{display:none}.site-menu{display:block}.wm .by{display:none}}

/* ── type ── */
h1,h2,h3{margin:0;text-wrap:balance;letter-spacing:-.028em}
h1{font-size:clamp(40px,5.6vw,68px);line-height:1.02;font-weight:800}
h2{font-size:clamp(28px,3.6vw,44px);line-height:1.08;font-weight:800}
h3{font-size:20px;line-height:1.25;font-weight:700;letter-spacing:-.012em}
html[lang="ko"] h1{line-height:1.18;letter-spacing:-.02em;font-size:clamp(34px,4.4vw,54px)}
html[lang="ko"] .hero h1{max-width:none}
html[lang="ko"] h2{line-height:1.2;letter-spacing:-.015em}
p{margin:0}
.lead{font-size:clamp(17px,1.7vw,20px);line-height:1.6;color:var(--ink-2);max-width:60ch}
.lead b,.lead strong{color:var(--ink)}
.muted{color:var(--ink-3)}
.bronze{color:var(--bronze-deep)}
.kicker{font-size:14px;font-weight:700;color:var(--bronze-deep)}

/* ── layout blocks ── */
.hero{padding-block:clamp(56px,9vh,104px) clamp(48px,7vh,80px)}
.hero h1{max-width:16ch;margin-top:10px}
.hero .lead{margin-top:22px}
.section{padding-block:clamp(56px,8vh,96px);border-top:1px solid var(--line)}
.section.tint{background:var(--tint)}
.section.dark{background:var(--ink);color:#f1f0ed;border-top:0}
.section.dark .lead,.section.dark .muted{color:#c9c8ce}
.section-head{display:grid;gap:16px;margin-bottom:36px}
.section-head h2{max-width:24ch}
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px);align-items:start}
.split.wide-left{grid-template-columns:1.25fr 1fr}
@media (max-width:860px){.split,.split.wide-left{grid-template-columns:1fr}}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}

/* ── buttons ── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 20px;border-radius:9px;font:700 15px var(--sans);text-decoration:none;border:1.5px solid var(--ink);cursor:pointer;transition:background .15s}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:#000}
.btn-ghost{background:transparent;color:var(--ink)}
.btn-ghost:hover{background:var(--surface)}
.section.dark .btn-primary{background:#fff;color:var(--ink);border-color:#fff}
.section.dark .btn-ghost{color:#fff;border-color:#6a6b76}
.arrow{transition:transform .15s}
.btn:hover .arrow{transform:translateX(3px)}

/* ── ledger rows (instead of card grids) ── */
.ledger{border-top:1px solid var(--line)}
.ledger .row{display:grid;grid-template-columns:minmax(0,220px) minmax(0,1fr) auto;gap:10px 28px;padding:22px 0;border-bottom:1px solid var(--line);align-items:baseline}
.ledger .row h3{font-size:19px}
.ledger .row p{color:var(--ink-2)}
.ledger .row .meta{font-size:13px;font-weight:700;color:var(--ink-3);white-space:nowrap}
.ledger .row .meta.live{color:var(--green)}
.ledger a.row{text-decoration:none}
.ledger a.row:hover h3{color:var(--bronze-deep)}
@media (max-width:720px){.ledger .row{grid-template-columns:1fr}}

/* ── numbered steps (a real sequence) ── */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border:1px solid var(--line);border-radius:14px;overflow:hidden;counter-reset:s}
.steps li{padding:26px;border-right:1px solid var(--line);counter-increment:s}
.steps li:last-child{border-right:0}
.steps li::before{content:counter(s);width:30px;height:30px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:13px;font-weight:800}
.steps h3{margin-top:16px}
.steps p{margin-top:8px;color:var(--ink-2);font-size:15px}
.steps.four{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:860px){.steps,.steps.four{grid-template-columns:1fr}.steps li{border-right:0;border-bottom:1px solid var(--line)}.steps li:last-child{border-bottom:0}}

/* ── two-column list (e.g. what travels / what stays) ── */
.pair{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.pair > div{padding:26px}
.pair > div + div{border-left:1px solid var(--line);background:var(--surface)}
.pair ul{list-style:none;margin:16px 0 0;padding:0}
.pair li{padding:10px 0 10px 22px;position:relative;border-bottom:1px solid var(--line);color:var(--ink-2)}
.pair li:last-child{border-bottom:0}
.pair li::before{position:absolute;left:0;font-weight:800}
.pair .plus li::before{content:"+";color:var(--green)}
.pair .dash li::before{content:"\2014";color:var(--bronze-deep)}
@media (max-width:720px){.pair{grid-template-columns:1fr}.pair > div + div{border-left:0;border-top:1px solid var(--line)}}

/* ── stats strip ── */
.stats{display:flex;flex-wrap:wrap;gap:10px 44px;margin-top:28px}
.stats div{display:grid}
.stats b{font-size:clamp(28px,3.4vw,40px);font-weight:800;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.stats span{font-size:13px;color:var(--ink-3);font-weight:600}

/* ── media ── */
.frame{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--surface)}
.video{width:100%;max-width:440px;aspect-ratio:4/5;height:auto;border-radius:14px;border:1px solid var(--line);background:var(--surface);display:block}
.note{font-size:13px;color:var(--ink-3);margin-top:10px}
code,.code{font-family:var(--mono);font-size:.9em}
pre.code{margin:0;padding:22px;overflow:auto;background:var(--ink);color:#e6e4df;border-radius:14px;font-size:13px;line-height:1.65}

/* ── people ── */
.people{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
.person img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:14px;background:var(--surface)}
.person h3{margin-top:14px}
.person .role{font-size:14px;font-weight:600;color:var(--bronze-deep);margin-top:2px}
.person p{margin-top:8px;color:var(--ink-2);font-size:15px}
@media (max-width:760px){.people{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.people{grid-template-columns:1fr}}

/* ── updates ── */
.post-list{border-top:1px solid var(--line)}
.post-list a{display:grid;grid-template-columns:140px 1fr;gap:6px 28px;padding:24px 0;border-bottom:1px solid var(--line);text-decoration:none}
.post-list time{font-size:14px;color:var(--ink-3);font-variant-numeric:tabular-nums;padding-top:3px}
.post-list h3{font-size:22px}
.post-list a:hover h3{color:var(--bronze-deep)}
.post-list p{grid-column:2;color:var(--ink-2)}
@media (max-width:640px){.post-list a{grid-template-columns:1fr}.post-list p{grid-column:1}}
.article{max-width:68ch;margin:0 auto;padding-block:clamp(48px,8vh,88px)}
.article h1{font-size:clamp(34px,4.6vw,52px);max-width:none}
.article .byline{margin-top:16px;font-size:14px;color:var(--ink-3)}
.article .body{margin-top:36px;font-size:18px;line-height:1.72;color:var(--ink-2)}
.article .body > * + *{margin-top:1.1em}
.article .body h2{font-size:26px;margin-top:1.8em;color:var(--ink)}
.article .body a{color:var(--bronze-deep)}
.article .body ul{padding-left:1.2em}
.article .back{display:inline-block;margin-top:40px;font-weight:700;color:var(--bronze-deep);text-decoration:none}

/* ── final CTA ── */
.final{padding-block:clamp(60px,9vh,104px)}
.final-box{border:1.5px solid var(--ink);border-radius:16px;padding:clamp(28px,5vw,52px);display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center}
.final-box p{margin-top:12px;color:var(--ink-2);max-width:56ch}
@media (max-width:720px){.final-box{grid-template-columns:1fr}}

/* ── footer ── */
.site-footer{border-top:1px solid var(--line);background:var(--surface);padding:48px 0 36px;margin:0;font-family:var(--sans);line-height:1.55}
.site-header,.site-header *{font-family:var(--sans)}.site-header .wm,.site-footer .wm{font-family:var(--wordmark)}.site-header .wm .ai,.site-header .wm .by,.site-footer .wm .ai{font-family:var(--sans)}
.site-footer .cols{display:grid;grid-template-columns:1.3fr repeat(4,1fr);gap:28px}
.site-footer h4{margin:0 0 12px;font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
html[lang="ko"] .site-footer h4{letter-spacing:.02em}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.site-footer a{font-size:14px;color:var(--ink-2);text-decoration:none}
.site-footer a:hover{color:var(--ink)}
.site-footer .about p{font-size:14px;color:var(--ink-3);margin-top:12px;max-width:34ch}
.site-footer .legal{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:36px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3)}
@media (max-width:760px){.site-footer .cols{grid-template-columns:1fr 1fr}.site-footer .about{grid-column:1/-1}}

/* ── live traction counters (js/traction.js) ── */
.traction{position:relative;display:grid;grid-template-columns:repeat(4,1fr);margin-top:34px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.traction div{padding:20px 18px;border-right:1px solid var(--line)}
.traction div:last-of-type{border-right:0}
.traction b{display:block;font-size:clamp(24px,3vw,34px);line-height:1;letter-spacing:-.03em;font-variant-numeric:tabular-nums;transition:color .5s ease}
.traction div>span{display:block;font-size:13px;color:var(--ink-3);margin-top:8px}
.traction b.tick{color:var(--bronze)}
.od-w{display:inline-block;height:1em;overflow:hidden;vertical-align:top}
.od-s{display:block}
.od-d{display:block;height:1em;line-height:1}
.od-c{font-variant-numeric:normal}
.t-live{position:absolute;top:0;right:16px;transform:translateY(-50%);background:var(--bg);padding:0 9px;display:inline-flex;align-items:center;gap:7px;font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.section.tint .t-live{background:var(--tint)}
.t-live i{width:6px;height:6px;border-radius:50%;background:var(--bronze);animation:t-pulse 2.8s ease-in-out infinite}
@keyframes t-pulse{0%,100%{opacity:1}50%{opacity:.35}}
@media (prefers-reduced-motion:reduce){.t-live i{animation:none}}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
@media (max-width:760px){.traction{grid-template-columns:1fr 1fr}.traction div:nth-of-type(2){border-right:0}.traction div:nth-of-type(-n+2){border-bottom:1px solid var(--line)}}
@media (max-width:1100px){.split .pair{grid-template-columns:1fr}.split .pair > div + div{border-left:0;border-top:1px solid var(--line)}}