:root {
  color-scheme: dark;
  --bg: #050706;
  --panel: #0d110f;
  --panel-2: #121713;
  --line: #2c342e;
  --text: #f2f5f2;
  --muted: #9ca69f;
  --green: #7cf0a5;
  --cyan: #63dbe8;
  --coral: #ff8d7a;
  --yellow: #e9d76d;
  --blue: #79a9ff;
  --pink: #f28ac4;
  --violet: #b39aff;
}

* { box-sizing: border-box; }

html { background: var(--bg); scroll-behavior: smooth; }

body {
  min-width: 320px;
  margin: 0;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    linear-gradient(rgba(124, 240, 165, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 219, 232, 0.04) 1px, transparent 1px);
  background-size: 72px 72px;
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

a { color: inherit; }
button, input { font: inherit; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 10px max(20px, calc((100vw - 1240px) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(5, 7, 6, 0.94);
  backdrop-filter: blur(14px);
}

.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; }
.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--green);
  color: var(--green);
  font: 700 19px ui-monospace, SFMono-Regular, Consolas, monospace;
}
.brand span:last-child { display: grid; gap: 2px; }
.brand strong { font-size: 15px; }
.brand small { color: var(--muted); font: 9px ui-monospace, SFMono-Regular, Consolas, monospace; }

.top-actions { display: flex; align-items: center; gap: 10px; }
.back-link {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  padding: 0 14px;
  border: 1px solid var(--line);
  text-decoration: none;
  font-size: 13px;
}
.back-link:hover { border-color: var(--green); color: var(--green); }

main { width: min(1240px, calc(100% - 40px)); margin: 0 auto; }

.hero { max-width: 920px; padding: 92px 0 68px; }
.eyebrow { margin: 0 0 12px; color: var(--green); font: 11px ui-monospace, SFMono-Regular, Consolas, monospace; }
.hero h1 { margin: 0; font-size: clamp(48px, 8vw, 94px); line-height: 0.96; }
.hero-copy { max-width: 760px; margin: 26px 0 0; color: #c7cec9; font-size: 18px; line-height: 1.85; }
.trust-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.trust-row span { padding: 8px 11px; border: 1px solid var(--line); color: var(--muted); font-size: 12px; }

.featured {
  min-height: 430px;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, 0.85fr);
  border: 1px solid #405046;
  background: var(--panel);
}
.featured > img { width: 100%; height: 100%; min-height: 430px; display: block; object-fit: cover; object-position: center; }
.featured-copy { min-width: 0; align-self: center; padding: 44px; }
.source-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; color: var(--muted); font-size: 11px; }
.kicker { margin: 28px 0 7px; color: var(--cyan); font: 10px ui-monospace, SFMono-Regular, Consolas, monospace; }
.featured h2 { margin: 0; font-size: 42px; }
.featured-copy > p:not(.kicker) { color: #c8d0ca; line-height: 1.8; }
.primary-action {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 18px;
  padding: 0 18px;
  background: var(--green);
  color: #061008;
  font-weight: 750;
  text-decoration: none;
}
.primary-action:hover { background: var(--cyan); }

.catalog { padding: 92px 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 26px; }
.section-head h2, .change-note h2 { margin: 0; font-size: 34px; }
.section-head > p { max-width: 430px; margin: 0; color: var(--muted); text-align: right; font-size: 13px; }

.source-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.source-card {
  min-height: 310px;
  display: flex;
  flex-direction: column;
  padding: 22px;
  border: 1px solid var(--line);
  border-top-color: var(--tone, var(--green));
  border-radius: 6px;
  background: var(--panel);
}
.source-card:hover { background: var(--panel-2); border-color: var(--tone, var(--green)); }
.source-card[data-tone="cyan"] { --tone: var(--cyan); }
.source-card[data-tone="coral"] { --tone: var(--coral); }
.source-card[data-tone="green"] { --tone: var(--green); }
.source-card[data-tone="yellow"] { --tone: var(--yellow); }
.source-card[data-tone="blue"] { --tone: var(--blue); }
.source-card[data-tone="pink"] { --tone: var(--pink); }
.source-card[data-tone="violet"] { --tone: var(--violet); }
.source-card[data-tone="white"] { --tone: #e8eee9; }
.source-top { display: flex; align-items: start; justify-content: space-between; gap: 14px; }
.lettermark { color: var(--tone); font: 800 34px ui-monospace, SFMono-Regular, Consolas, monospace; }
.status { padding: 5px 7px; border: 1px solid currentColor; color: var(--green); font-size: 10px; }
.status.public { color: var(--cyan); }
.status.official { color: var(--coral); }
.status.creator { color: var(--yellow); }
.source-card h3 { margin: 26px 0 10px; font-size: 22px; overflow-wrap: anywhere; }
.source-card > p { margin: 0; color: #b8c1ba; font-size: 14px; line-height: 1.75; }
.source-bottom { display: flex; align-items: end; justify-content: space-between; gap: 14px; margin-top: auto; padding-top: 24px; }
.source-bottom > span { color: var(--muted); font-size: 11px; }
.source-bottom a { color: var(--tone); font-size: 13px; font-weight: 700; text-decoration: none; white-space: nowrap; }
.source-bottom a:hover { text-decoration: underline; }

.change-note { max-width: 820px; padding: 0 0 92px; }
.change-note > p:last-child { color: #bec7c0; font-size: 16px; line-height: 1.85; }

footer {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px max(20px, calc((100vw - 1240px) / 2));
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
}

@media (max-width: 920px) {
  .featured { grid-template-columns: 1fr; }
  .featured > img { min-height: 0; aspect-ratio: 16 / 9; }
  .source-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  .topbar { min-height: 62px; padding: 9px 12px; }
  .brand-mark { width: 38px; height: 38px; }
  .back-link { display: none; }
  main { width: min(100% - 24px, 1240px); }
  .hero { padding: 64px 0 48px; }
  .hero h1 { font-size: 52px; }
  .hero-copy { font-size: 15px; }
  .featured-copy { padding: 26px 20px 28px; }
  .featured h2 { font-size: 32px; }
  .catalog { padding: 68px 0; }
  .section-head { align-items: start; flex-direction: column; }
  .section-head > p { text-align: left; }
  .source-grid { grid-template-columns: 1fr; }
  .source-card { min-height: 278px; }
  .change-note { padding-bottom: 68px; }
  footer { align-items: start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}