:root {
  --bg: #141414;
  --bg-2: #181818;
  --ink: #ece9e3;
  --muted: #9b958a;
  --faint: #6a655c;
  --line: #2a2a2a;
  --line-2: #232323;
  --accent: #ff6a1a;
  --accent-hi: #ff8440;
  --maxw: 1080px;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
::selection { background: var(--accent); color: #141414; }
img { max-width: 100%; display: block; }
a { color: var(--ink); text-decoration: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

h1, h2, h3 { font-weight: 600; letter-spacing: -0.02em; margin: 0; color: var(--ink); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

.mono { font-family: var(--mono); }
.kicker {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--faint); font-weight: 500;
}
.kicker .ac { color: var(--accent); }

/* ---------- Header ---------- */
header.site { border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 40; background: var(--bg); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-family: var(--mono); font-size: 16px; font-weight: 500; letter-spacing: -0.01em; color: var(--ink); display: inline-flex; align-items: baseline; gap: 2px; }
.brand .mk { color: var(--accent); }
nav.site { display: flex; align-items: center; gap: 26px; }
nav.site a { font-family: var(--mono); font-size: 13px; color: var(--muted); letter-spacing: 0.02em; }
nav.site a:hover { color: var(--ink); }
nav.site a.cta { color: var(--accent); }
nav.site a.cta:hover { color: var(--accent-hi); }
@media (max-width: 600px) { nav.site a:not(.cta) { display: none; } }

/* ---------- Buttons ---------- */
.btn { font-family: var(--mono); font-size: 14px; font-weight: 500; display: inline-flex; align-items: center; gap: 9px; padding: 13px 22px; border: 1px solid transparent; cursor: pointer; letter-spacing: 0.01em; transition: background .14s ease, color .14s ease, border-color .14s ease; }
.btn-primary { background: var(--accent); color: #141414; }
.btn-primary:hover { background: var(--accent-hi); color: #141414; }
.btn-line { border-color: var(--line); color: var(--ink); }
.btn-line:hover { border-color: var(--muted); }
.arrow { color: inherit; }

/* ---------- Hero ---------- */
.hero { border-bottom: 1px solid var(--line); }
.hero .wrap { padding-top: 88px; padding-bottom: 88px; display: grid; grid-template-columns: 1fr; gap: 56px; align-items: start; }
@media (min-width: 940px) { .hero .wrap { grid-template-columns: 1.02fr 0.98fr; gap: 64px; } }
.hero h1 { font-size: clamp(38px, 5.6vw, 62px); line-height: 1.02; letter-spacing: -0.035em; margin: 22px 0 0; max-width: 13ch; }
.hero h1 .em { color: var(--accent); }
.hero .lead { color: var(--muted); font-size: clamp(16px, 2vw, 19px); margin: 26px 0 0; max-width: 50ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.hero-meta { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 10px 30px; }
.hero-meta span { font-family: var(--mono); font-size: 12.5px; color: var(--faint); letter-spacing: 0.02em; }
.hero-meta b { color: var(--ink); font-weight: 500; }

/* call-out log panel */
.logpanel { border: 1px solid var(--line); background: var(--bg-2); }
.logpanel .lhead { display: flex; justify-content: space-between; align-items: center; padding: 13px 18px; border-bottom: 1px solid var(--line); font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--faint); }
.logpanel .lhead .live { color: var(--accent); }
.logbody { padding: 16px 18px 20px; font-family: var(--mono); font-size: 13px; line-height: 2; color: var(--muted); overflow-x: auto; }
.logbody .ln { white-space: pre; }
.logbody .t { color: var(--faint); }
.logbody .ev { color: var(--ink); }
.logbody .p1 { color: var(--accent); }
.logbody .ok { color: var(--ink); }
.logbody .dim { color: var(--faint); }

/* ---------- Section scaffold ---------- */
section.block { border-bottom: 1px solid var(--line); }
section.block .wrap { padding-top: 84px; padding-bottom: 84px; }
.shead { max-width: 60ch; }
.shead h2 { font-size: clamp(26px, 3.4vw, 36px); line-height: 1.1; letter-spacing: -0.025em; margin: 14px 0 0; }
.shead p { color: var(--muted); margin: 16px 0 0; font-size: 17px; }

/* ---------- Build list ---------- */
.rows { margin-top: 56px; border-top: 1px solid var(--line); }
.row { display: grid; grid-template-columns: 1fr; gap: 6px 40px; padding: 28px 0; border-bottom: 1px solid var(--line); transition: padding-left .18s ease; }
@media (min-width: 760px) { .row { grid-template-columns: 56px 1fr 1.1fr; align-items: baseline; } .row:hover { padding-left: 8px; } }
.row .idx { font-family: var(--mono); font-size: 13px; color: var(--accent); letter-spacing: 0.04em; }
.row h3 { font-size: 19px; letter-spacing: -0.015em; }
.row p { color: var(--muted); margin: 0; font-size: 15.5px; }

/* ---------- Steps ---------- */
.steps { margin-top: 56px; display: grid; grid-template-columns: 1fr; gap: 0; }
@media (min-width: 820px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.step { padding: 30px 0; border-top: 1px solid var(--line); }
@media (min-width: 820px) { .step { padding: 0 32px; border-top: none; border-left: 1px solid var(--line); } .step:first-child { padding-left: 0; border-left: none; } }
.step .sn { font-family: var(--mono); font-size: 12px; color: var(--faint); letter-spacing: 0.1em; text-transform: uppercase; }
.step h3 { font-size: 19px; margin: 14px 0 8px; letter-spacing: -0.015em; }
.step p { color: var(--muted); margin: 0; font-size: 15.5px; }

/* ---------- Audience ---------- */
.aud-grid { margin-top: 52px; display: grid; grid-template-columns: 1fr; gap: 0; border-top: 1px solid var(--line); }
@media (min-width: 720px) { .aud-grid { grid-template-columns: repeat(3, 1fr); border-top: none; } }
.aud { padding: 26px 0; border-bottom: 1px solid var(--line); }
@media (min-width: 720px) { .aud { padding: 0 28px; border-bottom: none; border-left: 1px solid var(--line); } .aud:first-child { padding-left: 0; border-left: none; } }
.aud .lab { font-family: var(--mono); font-size: 12px; color: var(--accent); letter-spacing: 0.06em; text-transform: uppercase; }
.aud b { display: block; font-size: 17px; font-weight: 500; letter-spacing: -0.01em; margin: 12px 0 6px; }
.aud span { color: var(--muted); font-size: 15px; }

/* ---------- FAQ ---------- */
.faq { margin-top: 52px; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 24px 0; display: flex; align-items: baseline; justify-content: space-between; gap: 20px; font-size: 18px; font-weight: 500; letter-spacing: -0.015em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .sig { font-family: var(--mono); color: var(--accent); font-size: 18px; flex: none; line-height: 1; }
.faq details[open] summary .sig { color: var(--muted); }
.faq details p { margin: 0 0 26px; color: var(--muted); font-size: 16px; max-width: 64ch; }

/* ---------- Contact ---------- */
.contact .wrap { padding-top: 96px; padding-bottom: 96px; }
.contact h2 { font-size: clamp(28px, 4vw, 42px); letter-spacing: -0.03em; line-height: 1.05; max-width: 16ch; }
.contact .lead { color: var(--muted); margin: 20px 0 0; max-width: 52ch; font-size: 17px; }
.contact-lines { margin-top: 44px; border-top: 1px solid var(--line); }
.cline { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 24px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.cline .lab { font-family: var(--mono); font-size: 12px; color: var(--faint); letter-spacing: 0.08em; text-transform: uppercase; min-width: 130px; }
.cline a { font-family: var(--mono); font-size: 17px; color: var(--ink); }
.cline a:hover { color: var(--accent); }

/* ---------- Footer ---------- */
footer.site { padding: 40px 0; }
footer.site .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
footer.site .copy { font-family: var(--mono); font-size: 12.5px; color: var(--faint); letter-spacing: 0.02em; }
footer.site nav { display: flex; gap: 22px; }
footer.site nav a { font-family: var(--mono); font-size: 12.5px; color: var(--muted); }
footer.site nav a:hover { color: var(--ink); }

/* ---------- Legal pages ---------- */
.legal { max-width: 70ch; margin: 0 auto; padding: 72px 0 90px; }
.legal .back { font-family: var(--mono); font-size: 13px; color: var(--muted); display: inline-flex; align-items: center; gap: 7px; }
.legal .back:hover { color: var(--accent); }
.legal h1 { font-size: clamp(30px, 4vw, 40px); letter-spacing: -0.03em; margin: 26px 0 6px; }
.legal .updated { font-family: var(--mono); font-size: 13px; color: var(--faint); margin: 0 0 40px; }
.legal h2 { font-size: 18px; letter-spacing: -0.01em; margin: 40px 0 10px; }
.legal p, .legal li { color: var(--muted); font-size: 16px; }
.legal strong { color: var(--ink); font-weight: 500; }
.legal a { color: var(--accent); }
.legal ul { padding-left: 20px; }
.note { border: 1px solid var(--line); border-left: 2px solid var(--accent); background: var(--bg-2); color: var(--muted); padding: 14px 18px; font-size: 14px; }