:root {
  --bg: #F3F5F5;
  --surface: #FFFFFF;
  --surface-2: #E7EDED;
  --ink: #0A2A30;
  --ink-soft: #33474C;
  --muted: #5E7175;
  --line: #D6DEDE;
  --accent: #FF9072;
  --accent-strong: #C9502C;
  --on-accent: #3A1204;
  --verified: #1C8F54;
  --alert: #C6362F;
  --shadow: 0 1px 2px rgba(10,42,48,.06), 0 12px 28px -14px rgba(10,42,48,.22);
  --measure: 66ch;

  --ff-display: "Barlow Condensed", "Helvetica Neue", Arial, sans-serif;
  --ff-body: "IBM Plex Sans", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --ff-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #081A1E;
    --surface: #0F262B;
    --surface-2: #163137;
    --ink: #EAF2F1;
    --ink-soft: #BFD1CF;
    --muted: #859C9C;
    --line: #234046;
    --accent: #FF9072;
    --accent-strong: #FFA98D;
    --on-accent: #3A1204;
    --verified: #3ACB82;
    --alert: #FF6B63;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 18px 40px -18px rgba(0,0,0,.7);
  }
}

:root[data-theme="dark"] {
  --bg: #081A1E;
  --surface: #0F262B;
  --surface-2: #163137;
  --ink: #EAF2F1;
  --ink-soft: #BFD1CF;
  --muted: #859C9C;
  --line: #234046;
  --accent: #FF9072;
  --accent-strong: #FFA98D;
  --on-accent: #3A1204;
  --verified: #3ACB82;
  --alert: #FF6B63;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 18px 40px -18px rgba(0,0,0,.7);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--ff-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
h1, h2, h3, h4 { font-family: var(--ff-display); font-weight: 600; line-height: 1.04; margin: 0; text-wrap: balance; letter-spacing: .01em; }
p { margin: 0; }
img { max-width: 100%; display: block; }
::selection { background: var(--accent); color: var(--on-accent); }

.wrap { width: min(1120px, 92vw); margin: 0 auto; }

.eyebrow {
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent-strong);
  font-weight: 500;
}

/* ---------- brand lockup ---------- */
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.brand__mark { width: 26px; height: 26px; flex: none; }
.brand__word { height: 19px; width: auto; display: block; }
.brand__word--dark { display: none; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .brand__word--light { display: none; }
  :root:not([data-theme="light"]) .brand__word--dark { display: block; }
}
:root[data-theme="dark"] .brand__word--light { display: none; }
:root[data-theme="dark"] .brand__word--dark { display: block; }
:root[data-theme="light"] .brand__word--light { display: block; }
:root[data-theme="light"] .brand__word--dark { display: none; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar .wrap { display: flex; align-items: center; gap: 22px; height: 62px; }
.nav { display: flex; gap: 20px; margin-left: auto; align-items: center; }
.nav a {
  text-decoration: none; color: var(--muted); font-size: 14px; font-weight: 500;
  padding: 6px 2px; border-bottom: 2px solid transparent;
}
.nav a:hover { color: var(--ink); }
.nav a.active { color: var(--ink); border-bottom-color: var(--accent); }
.theme-btn {
  border: 1px solid var(--line); background: var(--surface); color: var(--ink-soft);
  width: 34px; height: 34px; border-radius: 8px; cursor: pointer;
  display: grid; place-items: center; font-size: 15px;
}
.theme-btn:hover { border-color: var(--accent); color: var(--ink); }

@media (max-width: 760px) {
  .nav a:not(.always) { display: none; }
}

/* ---------- hero ---------- */
.hero { padding: 76px 0 64px; border-bottom: 1px solid var(--line); }
.hero .wrap { display: grid; grid-template-columns: 1.05fr .95fr; gap: 54px; align-items: center; }
.hero h1 {
  font-size: clamp(40px, 6vw, 68px);
  text-transform: uppercase;
  letter-spacing: .005em;
  margin: 16px 0 20px;
}
.hero h1 .hl { color: var(--accent-strong); }
.hero .lead { color: var(--ink-soft); font-size: 19px; max-width: 46ch; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; align-items: center; }
.badge-store {
  display: inline-flex; align-items: center; gap: 10px;
  border: 1px solid var(--line); background: var(--surface);
  border-radius: 10px; padding: 9px 16px; text-decoration: none;
  font-size: 13px; line-height: 1.15; box-shadow: var(--shadow);
}
.badge-store .big { font-family: var(--ff-display); font-size: 17px; font-weight: 600; letter-spacing: .02em; }
.badge-store small { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .12em; }
.badge-store .ic { font-size: 20px; }

/* activity feed mock */
.feed {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 14px; box-shadow: var(--shadow); overflow: hidden;
  font-family: var(--ff-mono); font-size: 13px;
}
.feed-head {
  display: flex; align-items: center; gap: 10px;
  padding: 13px 16px; border-bottom: 1px solid var(--line);
  background: var(--surface-2);
}
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--verified); animation: pulse 2.4s ease-out infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--verified) 55%, transparent); } 70% { box-shadow: 0 0 0 9px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }
@media (prefers-reduced-motion: reduce) { .live-dot { animation: none; } html { scroll-behavior: auto; } }
.feed-head .t { font-weight: 600; letter-spacing: .04em; text-transform: uppercase; font-size: 11px; }
.feed-head .site { margin-left: auto; color: var(--muted); font-size: 11px; }
.feed ul { list-style: none; margin: 0; padding: 6px 0; }
.feed li { display: grid; grid-template-columns: 54px 1fr; gap: 12px; padding: 9px 16px; align-items: baseline; }
.feed li + li { border-top: 1px dashed var(--line); }
.feed .ts { color: var(--muted); }
.feed .ev { font-weight: 500; letter-spacing: .03em; text-transform: uppercase; font-size: 11px; }
.feed .meta { display: block; color: var(--muted); text-transform: none; letter-spacing: 0; font-weight: 400; margin-top: 2px; font-size: 12px; }
.feed .ev.ok { color: var(--verified); }
.feed .ev.warn { color: var(--alert); }

/* ---------- generic section ---------- */
.band { padding: 66px 0; border-bottom: 1px solid var(--line); }
.band.tint { background: var(--surface); }
.section-head { max-width: 60ch; margin-bottom: 34px; }
.section-head h2 { font-size: clamp(28px, 4vw, 40px); text-transform: uppercase; margin: 10px 0 12px; }
.section-head p { color: var(--muted); }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px;
  padding: 22px; box-shadow: var(--shadow);
}
.band.tint .card { background: var(--bg); }
.card h3 { font-size: 21px; text-transform: uppercase; margin-bottom: 7px; letter-spacing: .02em; }
.card p { font-size: 14.5px; color: var(--muted); line-height: 1.62; }
.card .kico {
  font-family: var(--ff-mono); font-size: 12px; color: var(--accent-strong);
  letter-spacing: .1em; display: block; margin-bottom: 12px;
}

/* audience strip */
.aud { display: flex; flex-wrap: wrap; gap: 8px; }
.aud span {
  font-family: var(--ff-mono); font-size: 12.5px; letter-spacing: .06em;
  border: 1px solid var(--line); border-radius: 100px; padding: 6px 13px;
  color: var(--ink-soft); background: var(--surface);
}

/* steps */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; }
.step { padding: 0 16px; position: relative; }
.step:not(:last-child)::after {
  content: ""; position: absolute; top: 18px; right: -1px; width: 1px; height: calc(100% - 18px);
  background: var(--line);
}
.step .n {
  font-family: var(--ff-mono); font-size: 12px; color: var(--on-accent);
  background: var(--accent); width: 30px; height: 30px; border-radius: 8px;
  display: grid; place-items: center; font-weight: 600; margin-bottom: 14px;
}
.step h4 { font-size: 18px; text-transform: uppercase; margin-bottom: 6px; }
.step p { font-size: 13.5px; color: var(--muted); line-height: 1.55; }

/* data list (access) */
.access { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.access-row { display: grid; grid-template-columns: 200px 1fr; gap: 18px; background: var(--surface); padding: 16px 20px; }
.band.tint .access-row { background: var(--bg); }
.access-row dt { font-family: var(--ff-display); font-size: 18px; text-transform: uppercase; letter-spacing: .02em; }
.access-row dd { margin: 0; color: var(--muted); font-size: 14.5px; }

.inline-link { color: var(--accent-strong); text-decoration: underline; text-underline-offset: 3px; font-weight: 600; }

/* ---------- legal / prose ---------- */
.doc { padding: 56px 0 80px; }
.doc .wrap { display: grid; grid-template-columns: 220px minmax(0, var(--measure)); gap: 56px; align-items: start; }
.toc { position: sticky; top: 84px; font-size: 13.5px; }
.toc .eyebrow { display: block; margin-bottom: 12px; }
.toc ol { list-style: none; margin: 0; padding: 0; counter-reset: toc; }
.toc li { counter-increment: toc; margin: 7px 0; }
.toc a { text-decoration: none; color: var(--muted); display: block; }
.toc a::before { content: counter(toc, decimal-leading-zero) "  "; font-family: var(--ff-mono); font-size: 11px; color: var(--accent-strong); }
.toc a:hover { color: var(--ink); }
.prose h1 { font-size: clamp(34px, 5vw, 48px); text-transform: uppercase; margin-bottom: 10px; }
.prose .updated { font-family: var(--ff-mono); font-size: 12.5px; color: var(--muted); letter-spacing: .04em; margin-bottom: 30px; }
.prose { counter-reset: sec; }
.prose h2 {
  font-size: 25px; text-transform: uppercase; margin: 40px 0 12px;
  padding-top: 14px; border-top: 1px solid var(--line); scroll-margin-top: 84px;
  counter-increment: sec;
}
.prose h2::before { content: counter(sec, decimal-leading-zero) "  "; font-family: var(--ff-mono); font-size: 14px; color: var(--accent-strong); }
.prose h3 { font-size: 18px; text-transform: uppercase; margin: 22px 0 6px; }
.prose p, .prose li { color: var(--ink-soft); font-size: 16px; }
.prose p + p { margin-top: 12px; }
.prose ul { margin: 10px 0; padding-left: 20px; }
.prose li { margin: 6px 0; }
.prose strong { color: var(--ink); }
.callout {
  background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--accent);
  border-radius: 8px; padding: 14px 18px; margin: 18px 0; font-size: 15px; color: var(--ink-soft);
}

/* support */
.contact-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
  box-shadow: var(--shadow); padding: 26px; display: grid; gap: 6px; margin-bottom: 34px;
}
.contact-card .mail {
  font-family: var(--ff-mono); font-size: clamp(17px, 3vw, 22px); font-weight: 500;
  color: var(--accent-strong); text-decoration: none; word-break: break-all;
}
.contact-card .mail:hover { text-decoration: underline; }
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; padding: 16px 2px; font-family: var(--ff-display); font-size: 19px;
  text-transform: uppercase; letter-spacing: .02em; list-style: none; display: flex; gap: 12px; align-items: baseline;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "+"; font-family: var(--ff-mono); color: var(--accent-strong); font-size: 16px; }
.faq details[open] summary::before { content: "\2013"; }
.faq .body { padding: 0 2px 18px; color: var(--ink-soft); font-size: 15.5px; }
.faq .body ul { margin: 8px 0 0; padding-left: 20px; }
.faq .body li { margin: 5px 0; }
.faq .body code {
  font-family: var(--ff-mono); font-size: 13px; background: var(--surface-2);
  padding: 1px 5px; border-radius: 4px;
}

/* footer */
.foot { padding: 40px 0 56px; border-bottom: none; }
.foot .wrap { display: flex; flex-wrap: wrap; gap: 18px 40px; align-items: center; }
.foot a { color: var(--muted); text-decoration: none; font-size: 14px; }
.foot a:hover { color: var(--ink); }
.foot .brand { margin-right: 8px; }
.foot .fine { color: var(--muted); font-size: 12.5px; font-family: var(--ff-mono); letter-spacing: .03em; flex-basis: 100%; margin-top: 6px; line-height: 1.7; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 3px; }

@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 34px; }
  .grid-3 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; gap: 22px 12px; }
  .step:not(:last-child)::after { display: none; }
  .doc .wrap { grid-template-columns: 1fr; gap: 26px; }
  .toc { position: static; }
  .toc ol { columns: 2; }
  .access-row { grid-template-columns: 1fr; gap: 4px; }
}
@media (max-width: 520px) {
  body { font-size: 16px; }
  .steps { grid-template-columns: 1fr; }
  .feed li { grid-template-columns: 48px 1fr; }
}