/* DCV2 static pre-launch page. Token-led, dependency-free, and responsive. */
:root {
  color-scheme: light;
  --bg-base: #f4f4f5;
  --bg-surface: #ffffff;
  --bg-muted: #fafafa;
  --text-primary: #18181b;
  --text-secondary: #52525b;
  --text-subtle: #71717a;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-soft: #eff6ff;
  --border: #e4e4e7;
  --border-soft: rgb(24 24 27 / 9%);
  --shadow-panel: 0 20px 50px -30px rgb(24 24 27 / 28%);
  --radius-card: 1.25rem;
  --radius-tile: 0.75rem;
  --content-width: 1160px;
  --font-heading: "Outfit", "Aptos Display", "Segoe UI", system-ui, sans-serif;
  --font-body: "Mulish", Aptos, "Segoe UI", system-ui, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg-base: #09090b;
    --bg-surface: #18181b;
    --bg-muted: #111113;
    --text-primary: #fafafa;
    --text-secondary: #d4d4d8;
    --text-subtle: #a1a1aa;
    --accent: #60a5fa;
    --accent-hover: #93c5fd;
    --accent-soft: #172554;
    --border: #27272a;
    --border-soft: rgb(250 250 250 / 10%);
    --shadow-panel: 0 20px 50px -30px rgb(0 0 0 / 85%);
  }
}

* { box-sizing: border-box; }
html { min-height: 100%; scroll-behavior: smooth; }
body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(ellipse at 78% 18%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 34rem),
    radial-gradient(ellipse at 7% 83%, color-mix(in srgb, var(--accent) 4%, transparent), transparent 28rem),
    var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.skip-link {
  position: absolute; z-index: 5; top: 0.75rem; left: 0.75rem;
  padding: 0.7rem 0.9rem; transform: translateY(-160%);
  border: 1px solid var(--border); border-radius: 0.5rem;
  background: var(--bg-surface); color: var(--text-primary); font-weight: 700;
}
.skip-link:focus { transform: translateY(0); }
.site-shell { width: min(calc(100% - 3rem), var(--content-width)); min-height: 100vh; margin-inline: auto; display: flex; flex-direction: column; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; padding-block: 1.9rem; border-bottom: 1px solid var(--border-soft); }
.brand { display: inline-flex; align-items: center; gap: 0.85rem; min-width: 0; text-decoration: none; }
.brand-mark { width: 2.65rem; height: 2.65rem; flex: 0 0 auto; display: flex; align-items: center; justify-content: center; gap: 3px; border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border)); border-radius: 0.8rem; background: var(--accent-soft); }
.brand-mark i { width: 3px; border-radius: 3px; background: var(--accent); }
.brand-mark i:nth-child(1) { height: 0.55rem; opacity: 0.6; }
.brand-mark i:nth-child(2) { height: 1rem; }
.brand-mark i:nth-child(3) { height: 0.75rem; opacity: 0.75; }
.brand-copy { display: grid; gap: 0.16rem; }
.brand-name { font-family: var(--font-heading); font-size: 1.08rem; font-weight: 500; letter-spacing: -0.035em; }
.brand-name strong { font-weight: 700; }
.brand-subtitle { color: var(--text-subtle); font-size: 0.72rem; letter-spacing: 0.025em; }
.status-pill { display: inline-flex; align-items: center; gap: 0.55rem; padding: 0.6rem 0.8rem; border: 1px solid var(--border-soft); border-radius: 999px; background: color-mix(in srgb, var(--bg-surface) 80%, transparent); color: var(--text-secondary); font-family: var(--font-heading); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.08em; white-space: nowrap; text-transform: uppercase; }
.status-dot { width: 0.42rem; height: 0.42rem; flex: 0 0 auto; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
main { flex: 1; }
.hero { display: grid; grid-template-columns: minmax(0, 1.03fr) minmax(360px, 0.97fr); align-items: center; gap: clamp(3rem, 6vw, 5.5rem); padding-block: clamp(4.5rem, 9vw, 7.25rem) clamp(4rem, 7vw, 6rem); }
.hero-copy { min-width: 0; }
.eyebrow { display: flex; align-items: center; gap: 0.8rem; margin: 0 0 1.45rem; color: var(--text-secondary); font-family: var(--font-heading); font-size: 0.7rem; font-weight: 700; letter-spacing: 0.14em; line-height: 1.5; text-transform: uppercase; }
.eyebrow-rule { width: 2.3rem; height: 1px; background: var(--accent); }
h1 { max-width: 12ch; margin: 0; font-family: var(--font-heading); font-size: clamp(3.25rem, 6.2vw, 5.8rem); font-weight: 500; letter-spacing: -0.075em; line-height: 0.99; text-wrap: balance; }
h1 span { color: var(--accent); }
.hero-lede { max-width: 38rem; margin: 1.65rem 0 0; color: var(--text-secondary); font-size: clamp(1rem, 1.4vw, 1.1rem); line-height: 1.8; }
.hero-note { display: flex; align-items: flex-start; gap: 0.8rem; max-width: 29rem; margin-top: 2rem; padding-top: 1.25rem; border-top: 1px solid var(--border-soft); }
.note-mark { display: grid; width: 1.65rem; height: 1.65rem; flex: 0 0 auto; place-items: center; border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--border)); border-radius: 0.5rem; color: var(--accent); font-family: var(--font-heading); font-size: 0.65rem; font-weight: 800; }
.hero-note p { margin: 0; color: var(--text-secondary); font-size: 0.84rem; line-height: 1.65; }
.preview-wrap { min-width: 0; }
.preview-panel { position: relative; overflow: hidden; padding: clamp(1.1rem, 2.5vw, 1.7rem); border: 1px solid var(--border-soft); border-radius: var(--radius-card); background: color-mix(in srgb, var(--bg-surface) 94%, transparent); box-shadow: var(--shadow-panel); }
.preview-panel::before { position: absolute; inset: 0 0 auto; height: 3px; background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 10%, transparent)); content: ""; }
.preview-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; padding-bottom: 1.3rem; border-bottom: 1px solid var(--border-soft); }
.preview-overline, .preview-label, .section-kicker, .tile-state, .principle-number { font-family: var(--font-heading); font-size: 0.65rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; }
.preview-overline { margin: 0 0 0.35rem; color: var(--text-subtle); }
.preview-header h2 { margin: 0; font-family: var(--font-heading); font-size: 1.1rem; font-weight: 650; letter-spacing: -0.035em; }
.preview-label { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.42rem 0.55rem; border: 1px solid var(--border-soft); border-radius: 0.45rem; color: var(--text-secondary); font-size: 0.58rem; white-space: nowrap; }
.preview-label::before { width: 0.35rem; height: 0.35rem; border-radius: 50%; background: var(--accent); content: ""; }
.workspace-heading { display: flex; align-items: center; gap: 0.75rem; margin-block: 1.3rem 1.1rem; }
.workspace-mark { display: grid; width: 2.35rem; height: 2.35rem; flex: 0 0 auto; place-items: center; border: 1px solid var(--border-soft); border-radius: 0.7rem; background: var(--bg-muted); color: var(--accent); font-family: var(--font-heading); font-size: 0.75rem; font-weight: 800; }
.workspace-heading h3 { margin: 0; font-size: 0.85rem; font-weight: 750; }
.workspace-heading p { margin: 0.22rem 0 0; color: var(--text-subtle); font-size: 0.7rem; line-height: 1.4; }
.workspace-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.65rem; }
.workspace-tile { display: flex; min-height: 9.25rem; flex-direction: column; align-items: flex-start; padding: 0.85rem 0.75rem 0.7rem; border: 1px solid var(--border-soft); border-radius: var(--radius-tile); background: var(--bg-surface); }
.tile-number { display: inline-grid; width: 1.6rem; height: 1.6rem; place-items: center; margin-bottom: 1.05rem; border: 1px solid color-mix(in srgb, var(--accent) 20%, var(--border)); border-radius: 0.45rem; background: var(--accent-soft); color: var(--accent); font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0; }
.workspace-tile h3 { margin: 0; font-family: var(--font-heading); font-size: 0.8rem; font-weight: 650; line-height: 1.25; }
.workspace-tile p { margin: 0.35rem 0 0; color: var(--text-subtle); font-size: 0.67rem; line-height: 1.5; }
.tile-state { margin-top: auto; padding-top: 0.95rem; color: var(--text-subtle); font-size: 0.55rem; letter-spacing: 0.12em; }
.preview-foot { display: flex; align-items: stretch; gap: 0.7rem; margin-top: 1rem; padding: 0.95rem 0.85rem; border: 1px dashed var(--border); border-radius: var(--radius-tile); background: var(--bg-muted); }
.preview-foot-rule { width: 2px; flex: 0 0 auto; border-radius: 1rem; background: var(--accent); }
.preview-foot p { margin: 0; color: var(--text-secondary); font-size: 0.72rem; line-height: 1.6; }
.preview-caption { display: flex; align-items: center; gap: 0.55rem; margin: 0.9rem 0 0 0.15rem; color: var(--text-subtle); font-family: var(--font-heading); font-size: 0.62rem; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; }
.preview-caption span { width: 1.2rem; height: 1px; background: var(--accent); }
.preview-caption b { font-weight: 500; }
.principles { display: grid; grid-template-columns: minmax(0, 1.15fr) repeat(3, minmax(0, 1fr)); gap: 1.5rem; padding-block: 1.5rem; border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); }
.principles-intro { padding-right: 1.5rem; }
.section-kicker { margin: 0 0 0.45rem; color: var(--text-subtle); }
.principles-intro h2 { margin: 0; font-family: var(--font-heading); font-size: 1rem; font-weight: 650; letter-spacing: -0.025em; line-height: 1.4; }
.principle { padding-left: 1.25rem; border-left: 1px solid var(--border-soft); }
.principle-number { margin: 0 0 0.65rem; color: var(--accent); font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0; }
.principle h3 { margin: 0; font-family: var(--font-heading); font-size: 0.86rem; font-weight: 650; }
.principle > p:last-child { margin: 0.35rem 0 0; color: var(--text-secondary); font-size: 0.75rem; line-height: 1.6; }
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: 1.5rem 1.75rem; color: var(--text-subtle); font-size: 0.71rem; line-height: 1.6; }
.site-footer p { margin: 0; }
.site-footer strong { color: var(--text-primary); font-weight: 750; }
.footer-note { text-align: right; }

@media (max-width: 900px) {
  .hero { grid-template-columns: minmax(0, 1fr); gap: 3.25rem; padding-top: 4.5rem; }
  .hero-copy { max-width: 45rem; }
  h1 { max-width: 14ch; font-size: clamp(3.2rem, 9vw, 5.25rem); }
  .preview-wrap { width: min(100%, 39rem); }
  .principles { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .principles-intro { grid-column: 1 / -1; padding-right: 0; }
  .principle:first-of-type { padding-left: 0; border-left: 0; }
}
@media (max-width: 600px) {
  .site-shell { width: min(calc(100% - 2rem), var(--content-width)); }
  .site-header { align-items: flex-start; padding-block: 1.25rem; }
  .brand { gap: 0.65rem; }
  .brand-mark { width: 2.3rem; height: 2.3rem; }
  .brand-name { font-size: 0.97rem; }
  .brand-subtitle { max-width: 13rem; font-size: 0.64rem; line-height: 1.4; }
  .status-pill { gap: 0.4rem; max-width: 7.6rem; padding: 0.45rem 0.55rem; font-size: 0.56rem; letter-spacing: 0.045em; white-space: normal; }
  .status-dot { width: 0.35rem; height: 0.35rem; }
  .hero { gap: 2.75rem; padding-block: 3.5rem 3rem; }
  .eyebrow { align-items: flex-start; font-size: 0.62rem; letter-spacing: 0.09em; }
  h1 { font-size: clamp(3rem, 13.5vw, 4.45rem); letter-spacing: -0.07em; }
  .hero-lede { margin-top: 1.25rem; font-size: 0.96rem; line-height: 1.75; }
  .hero-note p { font-size: 0.78rem; }
  .preview-panel { padding: 1rem; border-radius: 1rem; }
  .preview-header { flex-wrap: wrap; }
  .workspace-grid { gap: 0.45rem; }
  .workspace-tile { min-height: 8.75rem; padding: 0.65rem 0.55rem; }
  .workspace-tile h3 { font-size: 0.73rem; }
  .workspace-tile p { font-size: 0.62rem; }
  .tile-state { font-size: 0.5rem; }
  .principles { grid-template-columns: minmax(0, 1fr); gap: 1.25rem; padding-block: 1.5rem; }
  .principle, .principle:first-of-type { padding-left: 0.85rem; border-left: 1px solid var(--border-soft); }
  .principle-number { margin-bottom: 0.4rem; }
  .principle > p:last-child { margin-top: 0.2rem; }
  .site-footer { align-items: flex-start; flex-direction: column; padding-block: 1.25rem; font-size: 0.68rem; }
  .footer-note { text-align: left; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}