:root {
  --navy: #0b1220;
  --navy-2: #101b2f;
  --panel: #141f36;
  --border: #23324f;
  --text: #e7ecf5;
  --text-dim: #9fb0c9;
  --accent: #4fd1c5;
  --accent-2: #f2b134;
  --danger: #e15c5c;
  --radius: 10px;
  --maxw: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--navy);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ============ HEADER / BRAND ============ */
header.site {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11,18,32,0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; padding: 14px 24px; }

.brand {
  font-family: "Playfair Display", Georgia, "Times New Roman", serif;
  font-size: 1.5rem;
  color: var(--text);
  white-space: nowrap;
  line-height: 1;
}
.brand:hover { text-decoration: none; }

/* ============ NAV: DESKTOP ============ */
nav.primary { display: flex; align-items: center; }
.nav-list { display: flex; align-items: center; list-style: none; margin: 0; padding: 0; gap: 4px; }
.nav-list > li { position: relative; }
.nav-link {
  display: inline-flex; align-items: center; gap: 4px;
  color: var(--text-dim); padding: 10px 14px; font-size: 0.88rem; font-weight: 500;
  white-space: nowrap; border: none; background: none; cursor: pointer; font-family: inherit;
  border-radius: 8px;
}
.nav-link:hover { color: var(--text); text-decoration: none; background: rgba(255,255,255,0.03); }
.nav-link[aria-current="page"] { color: var(--accent); }
.nav-link .chev { font-size: 0.7em; transition: transform 0.15s ease; }
.nav-item.open > .nav-link .chev { transform: rotate(180deg); }

.dropdown-panel {
  position: absolute; top: calc(100% + 8px); left: 0; min-width: 240px;
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 8px; box-shadow: 0 12px 28px rgba(0,0,0,0.35);
  display: none; flex-direction: column; gap: 2px; z-index: 60;
}
.nav-item.open > .dropdown-panel { display: flex; }
.dropdown-panel a {
  color: var(--text-dim); font-size: 0.86rem; padding: 9px 12px; border-radius: 7px;
}
.dropdown-panel a:hover { color: var(--text); background: rgba(255,255,255,0.05); text-decoration: none; }
.dropdown-panel a[aria-current="page"] { color: var(--accent); }

.cta-btn {
  display: inline-block; background: var(--accent); color: #06231f !important;
  padding: 10px 20px; border-radius: 8px; font-weight: 700; font-size: 0.9rem; border: none; cursor: pointer;
  font-family: inherit; text-align: center;
}
.cta-btn:hover { background: #3fc0b3; text-decoration: none; }
.cta-btn.outline { background: transparent; border: 1px solid var(--accent); color: var(--accent) !important; }
.cta-btn.outline:hover { background: rgba(79,209,197,0.1); }
.cta-btn.ghost { background: transparent; border: 1px solid var(--border); color: var(--text) !important; }
.cta-btn.ghost:hover { border-color: var(--accent-2); }
.cta-btn.small { padding: 8px 16px; font-size: 0.82rem; }
.nav-cta { margin-left: 10px; }

/* ============ NAV: HAMBURGER (mobile + tablet) ============ */
.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 40px; height: 40px; background: none; border: 1px solid var(--border); border-radius: 8px;
  cursor: pointer; padding: 0;
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--text); margin: 0 auto; transition: transform 0.2s ease, opacity 0.2s ease; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 767px) {
  .nav-toggle { display: flex; }
  nav.primary {
    position: fixed; top: 69px; left: 0; right: 0;
    height: calc(100vh - 69px);
    background: var(--navy-2); border-top: 1px solid var(--border);
    padding: 16px; overflow-y: auto;
    transform: translateY(-8px); opacity: 0; visibility: hidden;
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
  }
  nav.primary.mobile-open { opacity: 1; transform: translateY(0); visibility: visible; }
  .nav-list { flex-direction: column; align-items: stretch; width: 100%; gap: 2px; }
  .nav-link { width: 100%; padding: 14px 12px; font-size: 1rem; justify-content: space-between; }
  .dropdown-panel {
    position: static; display: none; box-shadow: none; border: none; background: none;
    padding: 0 0 0 12px; min-width: 0;
  }
  .nav-item.open > .dropdown-panel { display: flex; }
  .nav-cta { margin: 12px 0 0; width: 100%; }
  .nav-cta .cta-btn { display: block; width: 100%; }
}

section { padding: 88px 0; border-bottom: 1px solid var(--border); }
section.tight { padding: 64px 0; }
section:last-of-type { border-bottom: none; }
.eyebrow {
  text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.75rem;
  color: var(--accent); font-weight: 700; margin-bottom: 14px;
}
.eyebrow.amber { color: var(--accent-2); }
h1 { font-size: 2.6rem; line-height: 1.15; margin: 0 0 20px; letter-spacing: -0.01em; }
h2 { font-size: 1.9rem; margin: 0 0 16px; letter-spacing: -0.01em; }
h3 { font-size: 1.15rem; margin: 0 0 10px; }
h4 { font-size: 0.98rem; margin: 0 0 8px; color: var(--text); }
p.lead { font-size: 1.15rem; color: var(--text-dim); max-width: 720px; }
p { color: var(--text-dim); }
.badge {
  display: inline-block; border: 1px solid rgba(242,177,52,0.5); background: rgba(242,177,52,0.08);
  color: var(--accent-2); border-radius: 999px; padding: 4px 12px; font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em; margin-left: 12px; vertical-align: middle;
}

.hero { padding-top: 96px; padding-bottom: 90px; }
.hero .grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 48px; align-items: center; }
.hero-actions { margin-top: 32px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px;
}
.hero-card .metric-label { color: var(--text-dim); font-size: 0.9rem; margin-bottom: 18px; line-height: 1.4; }
.hero-card .metric-label:last-child { margin-bottom: 0; }
.hero-card strong { color: var(--accent); }

.problem .grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin-top: 36px; }
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px;
}
.card.warn { border-color: rgba(225,92,92,0.4); }
.card.warn h3 { color: var(--danger); }
.card.good { border-color: rgba(79,209,197,0.4); }
.card.good h3 { color: var(--accent); }

.lines .grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 36px; }
.line-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; display: flex; flex-direction: column;
}
.line-card p { flex-grow: 1; font-size: 0.92rem; }
.line-card a { margin-top: 16px; font-size: 0.88rem; font-weight: 600; }

.architecture .tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 36px; }
.tier { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }

.configs .grid4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px,1fr)); gap: 22px; margin-top: 36px; }
.config { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; }
.config .tag { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent); font-weight: 700; margin-bottom: 10px; }
.config p { flex-grow: 1; font-size: 0.9rem; }
.config ul { margin: 10px 0 0; padding-left: 18px; font-size: 0.85rem; color: var(--text-dim); }
.config ul li { margin-bottom: 4px; }

.instruments .grid3i {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; margin-top: 36px;
}
.instrument { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.instrument .code { font-family: "SF Mono", Menlo, Consolas, monospace; color: var(--accent); font-size: 0.85rem; margin-bottom: 6px; display: block; }
.instrument h3 { font-size: 1rem; margin-bottom: 8px; }
.instrument p { font-size: 0.88rem; margin: 0; }
.gated-note {
  margin-top: 28px; padding: 16px 20px; border: 1px dashed var(--border); border-radius: var(--radius);
  color: var(--text-dim); font-size: 0.88rem;
}

.assure .grid2b { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 36px; }

.crosswalk table { width: 100%; border-collapse: collapse; margin-top: 32px; font-size: 0.92rem; }
.crosswalk th, .crosswalk td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--border); }
.crosswalk th { color: var(--text-dim); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; }
.status-tag { font-size: 0.76rem; padding: 3px 10px; border-radius: 999px; border: 1px solid var(--border); color: var(--text-dim); white-space: nowrap; }

.cpi-section { background: linear-gradient(180deg, rgba(242,177,52,0.05), transparent 40%); }
.cpi-banner {
  background: var(--panel); border: 1px solid rgba(242,177,52,0.4); border-radius: var(--radius);
  padding: 18px 22px; margin-top: 28px; font-size: 0.9rem; color: var(--text-dim); line-height: 1.5;
}
.cpi-banner strong { color: var(--accent-2); display: block; margin-bottom: 4px; }

.cpi-visual-container { margin: 40px 0; width: 100%; }
.visual-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 32px; align-items: stretch; }
.stack-graphic {
  background: rgba(16, 27, 47, 0.4); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 40px 32px; display: flex; flex-direction: column; gap: 16px; position: relative;
}
.stack-axis-label {
  position: absolute; left: -45px; top: 50%; transform: rotate(-90deg) translateY(-50%);
  font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.15em; color: var(--text-dim); opacity: 0.6;
}
.graphic-layer {
  background: linear-gradient(135deg, var(--panel), rgba(20, 31, 54, 0.7)); border: 1px solid var(--border);
  border-radius: 8px; padding: 20px 24px; position: relative; transition: all 0.3s ease; box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.graphic-layer:hover { border-color: var(--accent-2); transform: translateY(-2px); }
.layer-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.layer-num { font-family: monospace; font-size: 0.8rem; color: var(--text-dim); font-weight: 700; }
.layer-status-tag { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.05em; padding: 2px 8px; border-radius: 4px; font-weight: 600; }
.state-active { background: rgba(79, 209, 197, 0.1); color: var(--accent); border: 1px solid rgba(79, 209, 197, 0.2); }
.state-gate { background: rgba(242, 177, 52, 0.1); color: var(--accent-2); border: 1px solid rgba(242, 177, 52, 0.2); }
.state-validate { background: rgba(225, 92, 92, 0.1); color: var(--danger); border: 1px solid rgba(225, 92, 92, 0.2); }
.graphic-layer h4 { margin: 0 0 6px 0; font-size: 1.05rem; color: var(--text); }
.graphic-layer p { margin: 0; font-size: 0.85rem; color: var(--text-dim); line-height: 1.4; }

.output-pipeline {
  margin-top: 8px; border: 1px dashed var(--accent-2); border-radius: 6px; background: rgba(242, 177, 52, 0.02);
  padding: 12px; text-align: center; display: flex; align-items: center; justify-content: center; gap: 12px;
}
.pipeline-arrow { color: var(--accent-2); font-weight: 700; animation: bounce 2s infinite; }
.pipeline-text { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text); font-weight: 600; }

.inspector-panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; }
.panel-header {
  display: flex; align-items: center; gap: 10px; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em;
  font-weight: 700; color: var(--text); border-bottom: 1px solid var(--border); padding-bottom: 14px; margin-bottom: 20px;
}
.pulse-indicator { width: 8px; height: 8px; background: var(--accent-2); border-radius: 50%; box-shadow: 0 0 8px var(--accent-2); }
.matrix-row { display: flex; justify-content: space-between; font-size: 0.88rem; padding: 12px 0; border-bottom: 1px solid rgba(35, 50, 79, 0.4); }
.matrix-row .m-label { color: var(--text-dim); }
.matrix-row .m-value { color: var(--text); font-weight: 500; text-align: right; }
.divider-line { margin: 16px 0; border-top: 1px solid var(--border); }
.panel-footer-text { font-size: 0.82rem; color: var(--text-dim); line-height: 1.5; margin: 0; }

.profiles-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 14px; margin-top: 24px; }
.profile-chip { background: var(--navy-2); border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; font-size: 0.85rem; color: var(--text-dim); }
.profile-chip .status { display: block; font-size: 0.7rem; color: var(--accent-2); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 6px; }
.segments-two { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 28px; }

.audiences .grid4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px,1fr)); gap: 22px; margin-top: 36px; }
.aud { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; }
.aud .tag { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-2); font-weight: 700; margin-bottom: 10px; }
.aud p { flex-grow: 1; font-size: 0.92rem; }
.aud a { margin-top: 14px; font-size: 0.88rem; font-weight: 600; }

.about .grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 32px; }
.changelog-sample { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; font-size: 0.85rem; color: var(--text-dim); }
.changelog-sample .v { color: var(--accent); font-weight: 700; }
.about-facts { list-style: none; margin: 20px 0 0; padding: 0; font-size: 0.9rem; }
.about-facts li { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.about-facts li span:first-child { color: var(--text-dim); }
.about-facts li span:last-child { color: var(--text); text-align: right; }

.resource-placeholder {
  background: var(--panel); border: 1px dashed var(--border); border-radius: var(--radius);
  padding: 40px; text-align: center; margin-top: 36px;
}
.resource-placeholder h3 { margin-bottom: 8px; }

.contact { text-align: center; }
.contact .wrap { max-width: 640px; }
.contact h2 { font-size: 2.1rem; }
form.brief { margin-top: 32px; text-align: left; display: grid; gap: 16px; }
form.brief label { font-size: 0.85rem; color: var(--text-dim); display: block; margin-bottom: 6px; }
form.brief input, form.brief select, form.brief textarea {
  width: 100%; background: var(--navy-2); border: 1px solid var(--border); color: var(--text);
  padding: 12px 14px; border-radius: 8px; font-size: 0.95rem; font-family: inherit;
}
form.brief button { justify-self: start; margin-top: 8px; }

footer { padding: 40px 0; text-align: center; color: var(--text-dim); font-size: 0.82rem; }
footer .wrap { display: flex; flex-direction: column; gap: 8px; }
.footer-links { margin-top: 4px; }
.footer-links a { margin: 0 4px; }
.policy-page section .wrap { max-width: 820px; }
.policy-page h3 { margin-top: 28px; color: var(--text); }
.policy-page ul { color: var(--text-dim); padding-left: 20px; }
.policy-page ul li { margin-bottom: 6px; }
.policy-note {
  background: var(--panel); border: 1px dashed var(--border); border-radius: var(--radius);
  padding: 16px 20px; font-size: 0.85rem; color: var(--text-dim); margin-bottom: 32px;
}

@keyframes bounce { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(3px); } }
@media (max-width: 1180px) {
  .hero .grid, .problem .grid2, .architecture .tiers, .about .grid2, .lines .grid3, .assure .grid2b, .visual-grid, .segments-two { grid-template-columns: 1fr; }
  .stack-axis-label { display: none; }
  h1 { font-size: 2rem; }
}