:root {
  --bg: #081014;
  --bg-soft: #0f1d22;
  --panel: #12262d;
  --panel-2: #18333c;
  --text: #e8f4f4;
  --muted: #9db7ba;
  --line: #2f4e53;
  --brand: #53d6b4;
  --brand-2: #f4b860;
  --accent: #7ed7ff;
  --danger: #ff7f66;
  --ok: #68f1a8;
  --radius: 18px;
  --radius-sm: 12px;
  --max: 1180px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background:
    radial-gradient(circle at 10% 10%, rgba(83, 214, 180, 0.14), transparent 38%),
    radial-gradient(circle at 85% 12%, rgba(126, 215, 255, 0.12), transparent 42%),
    radial-gradient(circle at 30% 80%, rgba(244, 184, 96, 0.10), transparent 36%),
    var(--bg);
  color: var(--text);
  font-family: "Sora", "Avenir Next", "Segoe UI", sans-serif;
  line-height: 1.55;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: rgba(8, 16, 20, 0.78);
  border-bottom: 1px solid rgba(47, 78, 83, 0.7);
}

.topbar-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  font-family: "Fraunces", "Georgia", serif;
  font-size: 1.12rem;
  letter-spacing: 0.02em;
  color: var(--text);
}

.nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

.nav a {
  font-size: 0.88rem;
  color: var(--muted);
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
}

.nav a[aria-current="page"],
.nav a:hover {
  color: var(--text);
  border-color: rgba(83, 214, 180, 0.35);
  background: rgba(83, 214, 180, 0.08);
  text-decoration: none;
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 34px 20px 80px;
}

.hero {
  padding: 42px 30px;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 8px);
  background:
    linear-gradient(140deg, rgba(83, 214, 180, 0.13), rgba(20, 39, 45, 0.78) 45%, rgba(244, 184, 96, 0.10));
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.25);
}

.kicker {
  display: inline-block;
  margin-bottom: 14px;
  border: 1px solid rgba(126, 215, 255, 0.4);
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 999px;
  padding: 6px 12px;
}

h1 {
  margin: 0;
  font-family: "Fraunces", "Georgia", serif;
  font-size: clamp(1.9rem, 5.1vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
}

.hero p {
  max-width: 790px;
  color: #d8e9ea;
  margin: 16px 0 0;
  font-size: clamp(1rem, 2vw, 1.2rem);
}

.grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(24, 51, 60, 0.65), rgba(18, 38, 45, 0.88));
  padding: 18px;
  min-height: 100%;
  box-shadow: 0 12px 24px rgba(2, 8, 10, 0.24);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.card:hover {
  border-color: rgba(83, 214, 180, 0.48);
  transform: translateY(-2px);
}

.card h2,
.card h3 {
  margin: 0 0 8px;
  line-height: 1.2;
}

.card h2 { font-size: 1.2rem; }
.card h3 { font-size: 1.05rem; }

.card p,
.card li {
  color: var(--muted);
  font-size: 0.95rem;
}

.card ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

.span-12 { grid-column: span 12; }
.span-8 { grid-column: span 8; }
.span-7 { grid-column: span 7; }
.span-6 { grid-column: span 6; }
.span-5 { grid-column: span 5; }
.span-4 { grid-column: span 4; }
.span-3 { grid-column: span 3; }

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.metric {
  border: 1px solid rgba(83, 214, 180, 0.26);
  border-radius: var(--radius-sm);
  background: rgba(10, 25, 30, 0.68);
  padding: 12px;
}

.metric .value {
  color: var(--brand);
  font-size: 1.35rem;
  line-height: 1;
  font-weight: 700;
}

.metric .label {
  color: var(--muted);
  margin-top: 6px;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.pill {
  border: 1px solid rgba(157, 183, 186, 0.35);
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 0.78rem;
  color: #d4e7e8;
}

.cta-row {
  margin-top: 20px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  border-radius: 12px;
  border: 1px solid rgba(83, 214, 180, 0.45);
  background: rgba(83, 214, 180, 0.16);
  color: var(--text);
  padding: 11px 14px;
  font-weight: 600;
  font-size: 0.92rem;
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.btn.alt {
  border-color: rgba(126, 215, 255, 0.45);
  background: rgba(126, 215, 255, 0.14);
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.shot-grid {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 12px;
}

.shot {
  grid-column: span 4;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  overflow: hidden;
  background: rgba(10, 25, 30, 0.7);
}

.shot.wide {
  grid-column: span 6;
}

.shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.shot figcaption {
  padding: 10px 11px 12px;
  color: var(--muted);
  font-size: 0.82rem;
  border-top: 1px solid var(--line);
}

.workflow {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}

.workflow-step {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(24, 51, 60, 0.56);
  padding: 12px;
}

.workflow-step .num {
  font-weight: 700;
  color: var(--brand);
  margin-bottom: 4px;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.section-title {
  margin: 34px 0 12px;
  font-size: 1.35rem;
  font-family: "Fraunces", "Georgia", serif;
}

.impact-strip {
  margin-top: 16px;
  border: 1px solid rgba(83, 214, 180, 0.35);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(10, 27, 33, 0.9), rgba(15, 31, 37, 0.86));
  padding: 14px;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.impact-item {
  border: 1px solid rgba(126, 215, 255, 0.24);
  border-radius: var(--radius-sm);
  background: rgba(14, 35, 42, 0.74);
  padding: 10px;
}

.impact-item .label {
  color: var(--brand);
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  margin-bottom: 4px;
  font-weight: 700;
}

.impact-item p {
  margin: 0;
  color: #d6e7e8;
  font-size: 0.88rem;
  line-height: 1.4;
}

.diagram-grid {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 12px;
}

.diagram-panel {
  grid-column: span 12;
  border: 1px solid rgba(126, 215, 255, 0.28);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(11, 27, 33, 0.92), rgba(9, 20, 26, 0.92));
  box-shadow: 0 0 0 1px rgba(83, 214, 180, 0.08), 0 18px 36px rgba(2, 8, 12, 0.35);
  overflow: hidden;
}

.diagram-panel.half {
  grid-column: span 6;
}

.diagram-head {
  border-bottom: 1px solid rgba(126, 215, 255, 0.22);
  padding: 12px 14px;
  background: linear-gradient(90deg, rgba(83, 214, 180, 0.16), rgba(126, 215, 255, 0.10), rgba(244, 184, 96, 0.12));
}

.diagram-head h3 {
  margin: 0;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
}

.diagram-body {
  padding: 10px;
}

.diagram-body .mermaid {
  min-height: 260px;
  margin: 0;
  background: radial-gradient(circle at 16% 12%, rgba(83, 214, 180, 0.09), transparent 45%);
  border: 1px solid rgba(83, 214, 180, 0.18);
  border-radius: var(--radius-sm);
  padding: 10px;
}

.section-lead {
  margin: -4px 0 12px;
  color: #c9dde0;
  max-width: 760px;
}

.section-band {
  margin-top: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  background: linear-gradient(165deg, rgba(126, 215, 255, 0.12), rgba(10, 24, 28, 0.82) 52%, rgba(83, 214, 180, 0.14));
}

.section-band h2 {
  margin: 0;
}

.section-band p {
  margin: 10px 0 0;
  color: #d3e7e8;
  max-width: 760px;
}

.split {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 14px;
  margin-top: 14px;
}

.tone-block {
  border: 1px solid rgba(126, 215, 255, 0.3);
  border-radius: var(--radius-sm);
  background: rgba(7, 18, 22, 0.7);
  padding: 14px;
}

.tone-block h3 {
  margin: 0 0 8px;
}

.tone-block p {
  margin: 0;
  color: var(--muted);
}

.proof-list {
  margin: 10px 0 0;
  padding-left: 18px;
}

.proof-list li {
  margin-bottom: 5px;
  color: #cfe3e4;
}

.prompt {
  border: 1px solid rgba(83, 214, 180, 0.3);
  border-radius: var(--radius-sm);
  background: rgba(6, 17, 21, 0.8);
  padding: 14px;
}

.prompt h3 {
  margin: 0 0 8px;
}

.prompt p {
  margin: 0;
  color: #dcebec;
  font-size: 0.9rem;
}

.quote {
  margin: 10px 0 0;
  border-left: 3px solid rgba(83, 214, 180, 0.55);
  padding-left: 10px;
  color: #d5eaeb;
  font-size: 0.92rem;
}

body.page-architecture .hero {
  background:
    linear-gradient(132deg, rgba(83, 214, 180, 0.16), rgba(17, 35, 40, 0.88) 45%, rgba(244, 184, 96, 0.16)),
    radial-gradient(circle at 80% 30%, rgba(126, 215, 255, 0.14), transparent 45%);
}

body.page-validation .hero {
  background:
    linear-gradient(132deg, rgba(126, 215, 255, 0.17), rgba(17, 35, 40, 0.9) 48%, rgba(104, 241, 168, 0.1)),
    radial-gradient(circle at 8% 80%, rgba(83, 214, 180, 0.12), transparent 45%);
}

body.page-playbook .hero {
  background:
    linear-gradient(130deg, rgba(244, 184, 96, 0.18), rgba(18, 35, 40, 0.88) 44%, rgba(126, 215, 255, 0.15)),
    radial-gradient(circle at 76% 18%, rgba(83, 214, 180, 0.12), transparent 45%);
}

.small {
  font-size: 0.82rem;
  color: var(--muted);
}

.foot {
  margin-top: 34px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
  color: var(--muted);
  font-size: 0.82rem;
}

.reveal {
  animation: rise 0.55s ease both;
}

.reveal.delay-1 { animation-delay: 0.08s; }
.reveal.delay-2 { animation-delay: 0.16s; }
.reveal.delay-3 { animation-delay: 0.24s; }

@keyframes rise {
  from { transform: translateY(10px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@media (max-width: 980px) {
  .span-8, .span-7, .span-6, .span-5, .span-4, .span-3 {
    grid-column: span 12;
  }
  .diagram-panel.half {
    grid-column: span 12;
  }
  .impact-grid {
    grid-template-columns: 1fr 1fr;
  }
  .split {
    grid-template-columns: 1fr;
  }
  .shot, .shot.wide {
    grid-column: span 12;
  }
  .hero {
    padding: 30px 20px;
  }
}

@media (max-width: 640px) {
  .impact-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { animation: none; }
  .btn:hover,
  .card:hover { transform: none; }
}