/* StrandsOS: palette from the OS's own default theme (runtime/src/warp/descriptor.rs),
   amber from the original logo. System fonts only: the CSP allows nothing off-origin. */
:root {
  --canvas: #0D1117; --panel: #161B22; --chrome: #21262D; --border: #30363D;
  --text: #E6EDF3; --muted: #8B949E; --accent: #58A6FF; --accent-strong: #1F6FEB;
  --amber: #F59E0B; --green: #3FB950;
  --radius: 12px; --max: 1080px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--canvas); color: var(--text);
  font: 17px/1.6 "Noto Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }

/* header */
.top { position: sticky; top: 0; z-index: 10; background: rgba(13,17,23,.88);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); }
.top-row { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text);
  font-weight: 700; font-size: 1.15rem; letter-spacing: .01em; }
.brand:hover { text-decoration: none; }
.brand-small { font-size: .95rem; gap: 8px; }
nav { display: flex; align-items: center; gap: 24px; }
nav a { color: var(--muted); font-size: .95rem; }
nav a:hover { color: var(--text); text-decoration: none; }

/* buttons */
.btn { display: inline-block; padding: 12px 22px; border-radius: 999px; font-weight: 600;
  background: var(--accent-strong); color: #fff; border: 1px solid var(--accent-strong);
  transition: background .15s, border-color .15s; }
.btn:hover { background: var(--accent); border-color: var(--accent); color: var(--canvas); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: var(--chrome); border-color: var(--muted); color: var(--text); }
nav .btn-small { padding: 7px 16px; font-size: .9rem; color: #fff; }
nav .btn-small:hover { color: var(--canvas); }

/* hero */
.hero { padding: 120px 0 104px; text-align: center;
  background:
    radial-gradient(60% 50% at 30% 0%, rgba(88,166,255,.16), transparent 70%),
    radial-gradient(50% 45% at 75% 10%, rgba(245,158,11,.12), transparent 70%); }
.eyebrow { color: var(--muted); text-transform: uppercase; letter-spacing: .14em; font-size: .8rem; margin: 0 0 18px; }
h1 { font-size: clamp(2.4rem, 7vw, 4.6rem); line-height: 1.05; margin: 0 0 24px; letter-spacing: -.02em; }
.amber { color: var(--amber); }
.lead { font-size: clamp(1.05rem, 2.2vw, 1.3rem); color: #C9D1D9; max-width: 720px; margin: 0 auto 36px; }
.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.status { margin: 40px 0 0; color: var(--muted); font-size: .9rem; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--green);
  margin-right: 8px; vertical-align: middle; box-shadow: 0 0 0 4px rgba(63,185,80,.15); }
.dot-amber { background: var(--amber); box-shadow: 0 0 0 4px rgba(245,158,11,.15); }

/* sections */
section { padding: 88px 0; }
section[id] { scroll-margin-top: 64px; }
.band { background: var(--panel); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
h2 { font-size: clamp(1.7rem, 4vw, 2.5rem); line-height: 1.15; margin: 0 0 20px; letter-spacing: -.01em; }
h3 { font-size: 1.12rem; margin: 0 0 8px; }
.intro { font-size: 1.1rem; color: #C9D1D9; max-width: 780px; margin: 0 0 48px; }
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pillars div { border-left: 3px solid var(--amber); padding: 4px 0 4px 18px; }
.pillars p { margin: 0; color: var(--muted); }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 36px; }
.cards-4 { grid-template-columns: repeat(4, 1fr); }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px 24px; transition: border-color .15s, transform .15s; }
.card:hover { border-color: var(--accent-strong); transform: translateY(-2px); }
.card p { margin: 0; color: var(--muted); font-size: .97rem; }
.band .card { background: var(--canvas); }

.split { display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; align-items: center; }
.split-even { grid-template-columns: 1fr 1fr; align-items: stretch; gap: 24px; margin-top: 28px; }
.split p { color: #C9D1D9; }
.aside { border-left: 3px solid var(--amber); padding-left: 16px; color: var(--muted) !important; font-style: italic; }
.chips { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.chips li { background: var(--canvas); border: 1px solid var(--border); border-radius: 999px;
  padding: 8px 16px; font-size: .92rem; color: var(--text); }

.list-box { background: var(--canvas); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 28px; }
.list-box ul { margin: 12px 0 0; padding-left: 20px; color: #C9D1D9; }
.list-box li { margin: 6px 0; }
.list-box.next { border-style: dashed; }
.note { color: var(--muted); font-size: .95rem; margin: 28px 0 0; max-width: 780px; }

.final { text-align: center; padding: 104px 0;
  background: radial-gradient(50% 60% at 50% 100%, rgba(31,111,235,.18), transparent 70%); }
.final p { color: #C9D1D9; max-width: 660px; margin: 0 auto 32px; font-size: 1.08rem; }

footer { border-top: 1px solid var(--border); padding: 28px 0; color: var(--muted); font-size: .9rem; }
.foot-row { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
footer .brand { color: var(--muted); }

@media (max-width: 900px) {
  .cards, .cards-4 { grid-template-columns: 1fr 1fr; }
  .split, .split-even { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  nav a:not(.btn) { display: none; }
  .cards, .cards-4, .pillars { grid-template-columns: 1fr; }
  .hero { padding: 80px 0 72px; }
  section { padding: 64px 0; }
  .dash { display: none; }
  h1 .amber { display: block; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .card, .btn { transition: none; } }

/* v2: outcome stories, status tags, vision band */
.stories { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 8px; }
.story { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 26px 24px; }
.story h3 { font-size: 1.2rem; line-height: 1.3; margin: 12px 0 10px; }
.story p { margin: 0; color: #C9D1D9; font-size: .98rem; }
.story em { color: var(--text); }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag { font-size: .74rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase;
  padding: 4px 10px; border-radius: 999px; border: 1px solid; }
.tag-live { color: var(--green); border-color: rgba(63,185,80,.45); background: rgba(63,185,80,.08); }
.tag-vision { color: var(--amber); border-color: rgba(245,158,11,.45); background: rgba(245,158,11,.08); }
.vision { padding: 112px 0; text-align: center; border-top: 1px solid var(--border);
  background:
    radial-gradient(55% 70% at 50% 0%, rgba(245,158,11,.13), transparent 70%),
    radial-gradient(40% 50% at 50% 100%, rgba(88,166,255,.10), transparent 70%); }
.vision h2 { font-size: clamp(2rem, 5vw, 3.2rem); }
.vision p:not(.eyebrow) { color: #C9D1D9; font-size: 1.12rem; max-width: 760px; margin: 0 auto 18px; }
@media (max-width: 900px) { .stories { grid-template-columns: 1fr; } }