:root {
  --bone: #eef1f4;
  --bone-2: #f7f8fa;
  --metal: #6a7a88;
  --ink: #1c242c;
  --mute: #5c6b76;
  --lock: #b4232c;
  --ok: #2f6b4a;
  --line: rgba(28, 36, 44, 0.12);
  --display: "Literata", "Noto Serif SC", serif;
  --sans: "Noto Sans SC", "PingFang SC", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
section[id] { scroll-margin-top: 78px; }
body { margin: 0; color: var(--ink); background: var(--bone); font-family: var(--sans); font-size: 16px; line-height: 1.7; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.app-link { color: var(--metal); text-decoration: underline; text-underline-offset: 3px; }
button { font-family: inherit; cursor: pointer; }
code { font-family: var(--mono); background: rgba(106, 122, 136, 0.12); padding: 0.05em 0.35em; }
.grain { pointer-events: none; position: fixed; inset: 0; z-index: 20; opacity: 0.12; background-image: url("images/texture.webp"); background-size: 360px auto; mix-blend-mode: multiply; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 64px; top: 10px; z-index: 80; background: var(--metal); color: #fff; padding: 8px; }
.t-rail {
  position: fixed; left: 0; top: 0; bottom: 0; width: 48px; z-index: 30;
  display: flex; flex-direction: column; justify-content: space-between;
  padding: 80px 0 24px; background: var(--ink); color: #c5d0d8;
  font-family: var(--mono); font-size: 11px; text-align: center;
  border-right: 1px solid var(--metal);
}
.bar {
  position: sticky; top: 0; z-index: 40; margin-left: 48px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 24px; background: rgba(238, 241, 244, 0.92); border-bottom: 1px solid var(--line);
}
.brand { font-family: var(--display); font-weight: 700; }
.brand small { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; color: var(--mute); font-weight: 400; }
.nav-toggle { display: none; background: transparent; border: 1px solid var(--metal); color: var(--metal); padding: 6px 12px; }
.nav-links { display: flex; gap: 14px; font-size: 14px; }
.nav-links a { color: var(--mute); }
.nav-links a.is-active, .nav-links a:hover { color: var(--ink); }
.nav-links .live { background: var(--ink); color: #fff; padding: 6px 12px; }
main { margin-left: 48px; }
.hero { position: relative; min-height: 92vh; display: grid; align-items: end; color: #fff; }
.hero > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(28, 36, 44, 0.15), rgba(28, 36, 44, 0.88)); }
.hero-copy { position: relative; z-index: 1; padding: 10vh 6vw 8vh; max-width: 780px; }
.kicker { font-family: var(--mono); letter-spacing: 0.16em; font-size: 11px; color: var(--metal); margin: 0 0 12px; }
.hero .kicker { color: #c5d0d8; }
h1, h2, h3 { font-family: var(--display); margin: 0 0 12px; line-height: 1.12; }
h1 { font-size: clamp(36px, 5.6vw, 68px); }
h2 { font-size: clamp(26px, 3.2vw, 40px); }
.lead, .quiet { max-width: 44em; }
.hero .lead { color: #e8eef2; }
.quiet { color: var(--mute); }
.qc { margin: 22px 0; padding: 16px; background: rgba(28, 36, 44, 0.72); border-left: 6px solid var(--ok); max-width: 34em; }
.qc.is-lock { border-left-color: var(--lock); }
.t { font-family: var(--mono); font-size: 18px; margin: 0 0 8px; }
.qc-state { min-height: 3.6em; font-size: 14px; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; }
.btn { display: inline-flex; align-items: center; padding: 10px 16px; border: 1px solid currentColor; font-size: 14px; }
.btn.fill { background: var(--ink); color: #fff; border-color: var(--ink); }
.hero .btn.fill { background: #fff; color: var(--ink); border-color: #fff; }
.btn.ghost { background: transparent; }
.wrap { width: min(1080px, calc(100% - 40px)); margin: 0 auto; padding: 72px 0; }
.alt { background: var(--bone-2); }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 24px; }
.two article { background: #fff; padding: 20px; border: 1px solid var(--line); }
.two ul { margin: 0; padding-left: 1.1em; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: center; padding: 28px 0; border-top: 1px solid var(--line); }
.row.flip > figure { order: -1; }
.row span { font-family: var(--mono); color: var(--metal); }
.row img { width: 100%; height: 210px; object-fit: cover; }
.row figcaption { font-size: 12px; color: var(--mute); font-family: var(--mono); margin-top: 8px; }
.mods { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 20px; }
.mods article { padding: 16px; background: #fff; border-top: 3px solid var(--metal); }
.bound { list-style: none; margin: 0; padding: 0; counter-reset: b; }
.bound li { counter-increment: b; padding: 12px 0 12px 56px; border-bottom: 1px solid var(--line); position: relative; }
.bound li::before { content: "T-" counter(b, decimal-leading-zero); position: absolute; left: 0; font-family: var(--mono); color: var(--metal); font-size: 12px; }
.io { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.io div { padding: 18px; background: #fff; border: 1px solid var(--line); }
.io ul { margin: 0; padding-left: 1.1em; }
footer { margin-left: 48px; display: flex; justify-content: space-between; gap: 12px; padding: 20px 6vw 36px; color: var(--mute); font-size: 14px; }
@media (max-width: 980px) {
  .t-rail { display: none; }
  .bar, main, footer { margin-left: 0; }
  .two, .row, .row.flip, .mods, .io, footer { grid-template-columns: 1fr; }
  .row.flip > figure { order: 0; }
  .nav-toggle { display: inline-flex; }
  .nav-links { display: none; position: absolute; top: 54px; right: 12px; left: 12px; flex-direction: column; background: #fff; border: 1px solid var(--line); padding: 12px; }
  .nav-links.open { display: flex; }
}