:root {
  --ink: #0a1f2c;
  --ink-2: #14384d;
  --ink-3: #4a6877;
  --paper: #f7fbfd;
  --paper-2: #eef5f9;
  --line: #d8e6ee;
  --teal: #0e7c8a;
  --teal-2: #0aa1b3;
  --teal-3: #d8eef1;
  --gold: #d4a23a;
  --warn: #b8651a;
  --safe: #1c8a5b;
  --abyss: linear-gradient(160deg, #052233 0%, #0a3a55 45%, #0e7c8a 100%);
  --shadow: 0 10px 30px rgba(8, 40, 60, 0.08);
  --radius: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--teal-2); }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.wrap-narrow { max-width: 880px; margin: 0 auto; padding: 0 24px; }

/* Navigation */
nav.top {
  position: sticky; top: 0; z-index: 30;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo {
  font-weight: 700; font-size: 22px; letter-spacing: -0.02em;
  display: flex; align-items: center; gap: 10px; color: var(--ink);
}
.logo .mark {
  width: 28px; height: 28px; border-radius: 50%;
  background: conic-gradient(from 200deg, #0aa1b3, #0e7c8a, #052233, #0aa1b3);
  box-shadow: inset 0 0 0 3px #fff, 0 0 0 1px rgba(8, 40, 60, 0.1);
}
.nav ul { list-style: none; display: flex; gap: 28px; margin: 0; padding: 0; }
.nav ul a { color: var(--ink-2); font-weight: 500; font-size: 15px; }
.nav .cta {
  display: inline-block; padding: 9px 18px; border-radius: 999px;
  background: var(--ink); color: #fff !important; font-weight: 600; font-size: 14px;
}
.nav .cta:hover { background: var(--teal); }
@media (max-width: 900px) { .nav ul { display: none; } }

/* Sub-nav (modules) */
.subnav {
  background: var(--paper-2);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.subnav .row { display: flex; gap: 22px; padding: 12px 24px; max-width: 1180px; margin: 0 auto; white-space: nowrap; }
.subnav a { color: var(--ink-3); }
.subnav a:hover, .subnav a.active { color: var(--teal); }
.subnav a.active { font-weight: 600; }

/* Hero variants */
header.hero {
  background: var(--abyss);
  color: #fff; position: relative; overflow: hidden;
  padding: 96px 0 120px;
}
header.hero::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 80% 10%, rgba(255,255,255,0.10), transparent 50%),
    radial-gradient(ellipse at 10% 90%, rgba(10, 161, 179, 0.20), transparent 50%);
  pointer-events: none;
}
header.hero-sm { padding: 72px 0 80px; }
.hero-grid {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px;
  position: relative; z-index: 1;
}
@media (max-width: 880px) { .hero-grid { grid-template-columns: 1fr; gap: 40px; } }
.hero-narrow { position: relative; z-index: 1; max-width: 800px; }
.eyebrow {
  text-transform: uppercase; letter-spacing: 0.16em; font-size: 12px;
  color: var(--gold); font-weight: 600; margin: 0 0 14px;
}
.eyebrow.dark { color: var(--teal); }
.hero h1 {
  font-size: clamp(36px, 5vw, 56px); line-height: 1.05; letter-spacing: -0.02em;
  margin: 0 0 20px; font-weight: 700;
}
header.hero-sm h1 { font-size: clamp(30px, 4vw, 44px); }
.hero p.lead {
  font-size: 18px; color: rgba(255, 255, 255, 0.86); max-width: 640px;
  margin: 0 0 32px;
}
.hero .cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 22px; border-radius: 999px; font-weight: 600; font-size: 15px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn-primary { background: var(--gold); color: var(--ink) !important; }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(212,162,58,0.35); }
.btn-ghost { background: rgba(255,255,255,0.10); color: #fff !important; border: 1px solid rgba(255,255,255,0.25); }
.btn-ghost:hover { background: rgba(255,255,255,0.18); }
.btn-dark { background: var(--ink); color: #fff !important; }
.btn-dark:hover { background: var(--teal); }
.hero .meta { font-size: 13px; color: rgba(255,255,255,0.65); }

/* Glass card (used in hero) */
.glass {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius);
  padding: 26px;
  backdrop-filter: blur(6px);
}
.glass h3 { margin: 0 0 14px; font-size: 16px; letter-spacing: 0.02em; color: #fff; }
.glass ul { list-style: none; margin: 0; padding: 0; }
.glass li {
  display: flex; gap: 10px; padding: 8px 0;
  font-size: 14px; color: rgba(255,255,255,0.88);
  border-bottom: 1px dashed rgba(255,255,255,0.12);
}
.glass li:last-child { border-bottom: 0; }
.glass li b { color: #fff; font-weight: 600; }
.pill {
  display: inline-block; padding: 3px 10px; border-radius: 999px;
  background: rgba(255,255,255,0.14); font-size: 11px; letter-spacing: 0.06em;
  text-transform: uppercase; color: #fff;
}
.pill.dark { background: var(--teal-3); color: var(--teal); }

/* Trust bar */
.trust { background: #fff; border-bottom: 1px solid var(--line); padding: 22px 0; font-size: 13px; }
.trust-grid { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 36px; color: var(--ink-2); }
.trust-grid b { color: var(--ink); }

/* Sections */
section { padding: 88px 0; }
section.tight { padding: 56px 0; }
section h2 {
  font-size: clamp(28px, 3.4vw, 38px); line-height: 1.15; letter-spacing: -0.02em;
  margin: 0 0 14px; font-weight: 700;
}
section h3 { font-size: 22px; letter-spacing: -0.01em; margin: 0 0 12px; }
section p { color: var(--ink-2); }
section .lede { font-size: 17px; max-width: 700px; margin: 0 auto 48px; }
.section-head { text-align: center; }
.section-head.left { text-align: left; }
.alt { background: var(--paper-2); }
.alt-2 { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* Audience cards */
.audience-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 880px) { .audience-grid { grid-template-columns: 1fr; } }
.audience {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px; box-shadow: var(--shadow);
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.audience:hover { transform: translateY(-3px); border-color: var(--teal); }
.audience h3 { margin: 14px 0 10px; font-size: 22px; letter-spacing: -0.01em; }
.audience p { color: var(--ink-2); margin: 0 0 18px; font-size: 15px; }
.audience .ico {
  width: 48px; height: 48px; border-radius: 12px;
  background: linear-gradient(135deg, var(--teal), var(--teal-2));
  display: grid; place-items: center; color: #fff; font-weight: 700; font-size: 18px;
}
.audience ul { padding-left: 18px; margin: 0; color: var(--ink-2); font-size: 14px; }
.audience ul li { margin-bottom: 6px; }

/* Modules grid */
.module-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 880px) { .module-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .module-grid { grid-template-columns: 1fr; } }
.module {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; background: var(--paper);
  transition: border-color 0.2s ease, transform 0.2s ease;
  display: block; color: inherit;
}
.module:hover { border-color: var(--teal-2); transform: translateY(-2px); color: inherit; }
.module .num { font-family: ui-monospace, SFMono-Regular, monospace; font-size: 12px; color: var(--teal); letter-spacing: 0.1em; }
.module h3 { margin: 6px 0 8px; font-size: 18px; letter-spacing: -0.01em; }
.module p { margin: 0; color: var(--ink-2); font-size: 14px; }
.module .more { display: inline-block; margin-top: 14px; font-size: 13px; font-weight: 600; color: var(--teal); }

/* Generic content blocks for module pages */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.two-col-7-5 { display: grid; grid-template-columns: 1.4fr 1fr; gap: 56px; }
.two-col-5-7 { display: grid; grid-template-columns: 1fr 1.4fr; gap: 56px; }
@media (max-width: 880px) { .two-col, .two-col-7-5, .two-col-5-7 { grid-template-columns: 1fr; gap: 36px; } }

.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.cards-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
@media (max-width: 880px) { .cards-3, .cards-2 { grid-template-columns: 1fr; } }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px;
}
.card h4 { margin: 0 0 8px; font-size: 17px; letter-spacing: -0.01em; }
.card p { margin: 0; font-size: 14px; color: var(--ink-2); }
.card .ico-sm {
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--teal-3); color: var(--teal);
  display: grid; place-items: center; font-weight: 700; font-size: 14px;
  margin-bottom: 14px;
}

/* Definition list */
.dlist { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.dlist dt { font-weight: 700; color: var(--ink); margin-top: 14px; font-size: 15px; }
.dlist dt:first-child { margin-top: 0; }
.dlist dd { margin: 4px 0 0; color: var(--ink-2); font-size: 14px; }

/* Workflow steps */
.steps { counter-reset: step; display: grid; gap: 14px; }
.step {
  display: grid; grid-template-columns: 56px 1fr; gap: 18px; align-items: flex-start;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px;
  position: relative;
}
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  width: 38px; height: 38px; border-radius: 50%; background: var(--teal); color: #fff;
  display: grid; place-items: center; font-weight: 700; font-family: ui-monospace, monospace;
  font-size: 14px;
}
.step h4 { margin: 0 0 4px; font-size: 16px; }
.step p { margin: 0; font-size: 14px; color: var(--ink-2); }

/* Spec table */
.spec { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.spec th, .spec td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line); font-size: 14px; vertical-align: top; }
.spec tr:last-child td { border-bottom: 0; }
.spec th { background: var(--paper-2); font-weight: 600; color: var(--ink); font-size: 13px; letter-spacing: 0.04em; text-transform: uppercase; }
.spec td b { color: var(--ink); }
.spec code { background: var(--paper-2); padding: 2px 6px; border-radius: 4px; font-size: 13px; }

/* Callouts */
.callout { border-left: 4px solid var(--teal); background: var(--teal-3); padding: 18px 22px; border-radius: 0 var(--radius) var(--radius) 0; font-size: 15px; color: var(--ink-2); margin: 24px 0; }
.callout.warn { border-left-color: var(--warn); background: #faf2e8; }
.callout.safe { border-left-color: var(--safe); background: #e8f6ef; }
.callout b { color: var(--ink); }

/* Tag */
.tag { display: inline-block; padding: 3px 10px; border-radius: 999px; background: var(--teal-3); color: var(--teal); font-size: 12px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; }
.tag.gold { background: #fbf2dd; color: var(--warn); }
.tag.gray { background: var(--line); color: var(--ink-2); }

/* CTA band */
.cta-band {
  background: var(--abyss); color: #fff;
  border-radius: var(--radius); padding: 56px; text-align: center;
  position: relative; overflow: hidden;
}
.cta-band::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 70% 30%, rgba(212,162,58,0.18), transparent 50%);
}
.cta-band h2 { color: #fff; position: relative; z-index: 1; margin-bottom: 12px; }
.cta-band p { color: rgba(255,255,255,0.88); margin: 0 auto 28px; max-width: 600px; position: relative; z-index: 1; }
.cta-band .btn { position: relative; z-index: 1; }

/* Module page: relevance bar */
.relevance { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 26px; }
.relevance h4 { margin: 0 0 10px; font-size: 14px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-3); }
.relevance ul { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.relevance li { font-size: 13px; padding: 6px 12px; background: var(--paper-2); border-radius: 999px; color: var(--ink-2); }
.relevance li b { color: var(--ink); }

/* Footer */
footer { background: var(--ink); color: rgba(255,255,255,0.7); padding: 56px 0 28px; font-size: 14px; }
footer a { color: rgba(255,255,255,0.85); }
footer a:hover { color: var(--gold); }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 36px; }
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
footer h4 { color: #fff; font-size: 14px; margin: 0 0 14px; letter-spacing: 0.04em; text-transform: uppercase; }
footer ul { list-style: none; padding: 0; margin: 0; }
footer ul li { margin-bottom: 8px; }
.foot-base {
  border-top: 1px solid rgba(255,255,255,0.1); padding-top: 22px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  color: rgba(255,255,255,0.5); font-size: 13px;
}

/* Lists with checkmarks */
ul.checks { list-style: none; padding: 0; margin: 0; }
ul.checks li {
  position: relative; padding: 8px 0 8px 28px;
  border-bottom: 1px solid var(--line); color: var(--ink-2); font-size: 15px;
}
ul.checks li:last-child { border-bottom: 0; }
ul.checks li::before {
  content: ""; position: absolute; left: 0; top: 14px;
  width: 14px; height: 9px;
  border-left: 2px solid var(--teal); border-bottom: 2px solid var(--teal);
  transform: rotate(-45deg);
}
ul.checks li b { color: var(--ink); }

/* Inline strong "K/V" facts */
.facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 880px) { .facts { grid-template-columns: 1fr 1fr; } }
.fact { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.fact .num { font-size: 28px; font-weight: 700; color: var(--ink); letter-spacing: -0.02em; }
.fact .lab { font-size: 13px; color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.06em; margin-top: 6px; }