:root {
  --navy: #222e67;
  --blue: #1c9ad6;
  --slate: #596671;
  --orange: #f58220;
  --ink: #132038;
  --muted: #68758a;
  --paper: #f4f7fb;
  --surface: rgba(255, 255, 255, 0.84);
  --surface-solid: #ffffff;
  --line: rgba(34, 46, 103, 0.12);
  --shadow: 0 24px 70px rgba(31, 47, 86, 0.12);
  --sidebar-width: 286px;
  color-scheme: light;
}

[data-theme="dark"] {
  --ink: #f1f5fb;
  --muted: #a9b5c9;
  --paper: #0c1324;
  --surface: rgba(21, 31, 53, 0.82);
  --surface-solid: #141e34;
  --line: rgba(180, 200, 238, 0.14);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 80% 10%, rgba(28, 154, 214, 0.10), transparent 28rem),
    linear-gradient(180deg, var(--paper), var(--paper));
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}
button, a { font: inherit; }
a { color: inherit; }
button { color: inherit; }

.page-shell { min-height: 100vh; }
.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 30;
  width: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  padding: 28px 22px;
  color: #fff;
  background:
    linear-gradient(160deg, rgba(255,255,255,0.04), transparent 40%),
    #18234f;
  border-right: 1px solid rgba(255,255,255,0.08);
}
.brand, .mobile-brand {
  display: flex;
  align-items: center;
  gap: 13px;
  text-decoration: none;
}
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 49px;
  height: 49px;
  border-radius: 14px;
  color: #fff;
  background: linear-gradient(145deg, var(--blue), #1478b8);
  font-weight: 900;
  letter-spacing: -0.08em;
  box-shadow: 0 12px 30px rgba(28,154,214,0.28);
}
.brand-copy { display: grid; line-height: 1.2; }
.brand-copy strong { font-size: 0.95rem; }
.brand-copy small { margin-top: 5px; color: rgba(255,255,255,0.58); }
.section-nav { display: grid; gap: 7px; margin-top: 52px; }
.nav-link {
  display: grid;
  grid-template-columns: 32px 1fr;
  align-items: center;
  gap: 10px;
  padding: 12px 13px;
  border-radius: 12px;
  color: rgba(255,255,255,0.68);
  text-decoration: none;
  font-size: 0.91rem;
  transition: 160ms ease;
}
.nav-link span { color: rgba(255,255,255,0.35); font-size: 0.72rem; letter-spacing: 0.12em; }
.nav-link:hover, .nav-link.active { color: #fff; background: rgba(255,255,255,0.09); transform: translateX(2px); }
.nav-link.active span { color: #65c8f1; }
.sidebar-footer { margin-top: auto; }
.progress-label { display: flex; justify-content: space-between; gap: 12px; color: rgba(255,255,255,0.62); font-size: 0.76rem; }
.progress-label strong { color: #fff; }
.progress-track { height: 5px; margin: 10px 0 14px; overflow: hidden; border-radius: 99px; background: rgba(255,255,255,0.12); }
.progress-track span { display: block; width: 0; height: 100%; background: linear-gradient(90deg, var(--blue), #78d6f6); transition: width 100ms linear; }
.sidebar-footer small { color: rgba(255,255,255,0.42); }

main { margin-left: var(--sidebar-width); overflow: hidden; }
.utility-bar {
  position: fixed;
  top: 22px;
  right: 28px;
  z-index: 20;
  display: flex;
  gap: 8px;
}
.utility-button, .icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface-solid) 88%, transparent);
  box-shadow: 0 10px 24px rgba(31, 47, 86, 0.08);
  cursor: pointer;
  backdrop-filter: blur(14px);
}
.utility-button:hover { transform: translateY(-1px); }
.utility-icon { color: var(--blue); font-size: 1.1rem; }

.mobile-header, .mobile-menu { display: none; }
.section-block {
  position: relative;
  width: min(1180px, calc(100% - 72px));
  margin: 0 auto;
  padding: 110px 0;
  scroll-margin-top: 30px;
}
.hero { min-height: 100vh; display: grid; align-content: center; padding-top: 90px; }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(12px); pointer-events: none; }
.hero-glow-one { width: 340px; height: 340px; top: 10%; right: -10%; background: rgba(28,154,214,0.10); }
.hero-glow-two { width: 220px; height: 220px; bottom: 8%; left: 12%; background: rgba(245,130,32,0.07); }
.eyebrow { color: var(--blue); font-size: 0.76rem; font-weight: 800; letter-spacing: 0.19em; }
.hero-grid { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 60px; align-items: center; margin-top: 22px; }
.hero h1 { max-width: 850px; margin: 0; font-size: clamp(3.4rem, 6.6vw, 6.8rem); line-height: 0.98; letter-spacing: -0.065em; }
.hero-lead { max-width: 760px; margin: 28px 0 0; color: var(--muted); font-size: clamp(1.06rem, 1.7vw, 1.34rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.primary-button, .secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 750;
  transition: 160ms ease;
}
.primary-button { color: #fff; background: var(--navy); box-shadow: 0 16px 36px rgba(34,46,103,0.24); }
.primary-button:hover { transform: translateY(-2px); box-shadow: 0 20px 40px rgba(34,46,103,0.30); }
.secondary-button { border: 1px solid var(--line); background: var(--surface); }
.secondary-button:hover { border-color: rgba(28,154,214,0.42); transform: translateY(-2px); }
.glass-card { background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); backdrop-filter: blur(18px); }
.vision-card { position: relative; padding: 32px; border-radius: 26px; overflow: hidden; }
.vision-card::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 4px; background: linear-gradient(90deg, var(--blue), var(--orange)); }
.vision-label { color: var(--blue); font-size: 0.74rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.14em; }
.vision-card blockquote { margin: 22px 0; font-size: 1.55rem; line-height: 1.35; font-weight: 800; letter-spacing: -0.03em; }
.vision-card p { margin: 0; color: var(--muted); }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 66px; }
.metric-card { padding: 22px; border-top: 1px solid var(--line); }
.metric-card strong { display: block; font-size: 2rem; letter-spacing: -0.04em; color: var(--navy); }
[data-theme="dark"] .metric-card strong { color: #8bd8f7; }
.metric-card span, .metric-card small { display: block; }
.metric-card span { margin-top: 3px; font-weight: 700; }
.metric-card small { margin-top: 6px; color: var(--muted); }

.section-heading { max-width: 880px; margin-bottom: 46px; }
.section-heading > div:first-child { display: flex; align-items: center; gap: 14px; }
.section-number { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 13px; color: #fff; background: var(--navy); font-size: 0.8rem; font-weight: 850; }
.section-heading h2 { margin: 18px 0 0; font-size: clamp(2.25rem, 4.5vw, 4.45rem); line-height: 1.04; letter-spacing: -0.055em; }
.section-heading > p { max-width: 760px; margin: 22px 0 0; color: var(--muted); font-size: 1.08rem; }
.split-heading { max-width: none; display: grid; grid-template-columns: 1.4fr 0.6fr; gap: 56px; align-items: end; }
.split-heading > p { margin: 0 0 6px; }

.architecture { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; gap: 12px; align-items: center; }
.architecture-node {
  min-height: 156px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 20px;
  text-align: left;
  background: var(--surface);
  cursor: pointer;
  transition: 180ms ease;
}
.architecture-node:hover, .architecture-node.active { transform: translateY(-4px); border-color: rgba(28,154,214,0.48); box-shadow: var(--shadow); }
.architecture-node.active { background: linear-gradient(145deg, rgba(28,154,214,0.12), var(--surface)); }
.node-index { display: block; margin-bottom: 24px; color: var(--blue); font-size: 0.72rem; font-weight: 850; letter-spacing: 0.16em; }
.architecture-node strong, .architecture-node small { display: block; }
.architecture-node strong { font-size: 1.1rem; }
.architecture-node small { margin-top: 7px; color: var(--muted); }
.architecture-arrow { color: var(--blue); font-size: 1.5rem; }
.architecture-detail { display: grid; grid-template-columns: 86px 1fr; gap: 26px; align-items: center; margin-top: 24px; padding: 28px; border-radius: 24px; }
.detail-icon { display: grid; place-items: center; width: 72px; height: 72px; border-radius: 22px; color: #fff; background: linear-gradient(145deg, var(--navy), var(--blue)); font-weight: 900; font-size: 1.6rem; }
.detail-kicker { margin: 0; color: var(--blue); font-size: 0.72rem; font-weight: 850; text-transform: uppercase; letter-spacing: 0.16em; }
.architecture-detail h3 { margin: 4px 0 8px; font-size: 1.5rem; }
.architecture-detail p:last-child { margin: 0; color: var(--muted); }

.filter-row { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 26px; }
.filter-button {
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  cursor: pointer;
  transition: 150ms ease;
}
.filter-button:hover, .filter-button.active { color: #fff; border-color: var(--navy); background: var(--navy); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature-card {
  min-height: 330px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
  box-shadow: 0 16px 44px rgba(31,47,86,0.06);
  transition: 180ms ease;
}
.feature-card:hover { transform: translateY(-5px); border-color: rgba(28,154,214,0.38); box-shadow: var(--shadow); }
.feature-card[hidden] { display: none; }
.feature-icon { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; color: var(--blue); background: rgba(28,154,214,0.10); font-size: 0.76rem; font-weight: 850; }
.feature-card h3 { margin: 22px 0 10px; font-size: 1.28rem; }
.feature-card p { margin: 0; color: var(--muted); }
.feature-card ul { display: grid; gap: 6px; margin: 22px 0 0; padding: 0; list-style: none; }
.feature-card li { position: relative; padding-left: 18px; font-size: 0.9rem; }
.feature-card li::before { content: ""; position: absolute; left: 0; top: 0.65em; width: 6px; height: 6px; border-radius: 50%; background: var(--orange); }

.principles-section { width: 100%; max-width: none; padding-left: max(36px, calc((100% - 1180px) / 2)); padding-right: max(36px, calc((100% - 1180px) / 2)); background: linear-gradient(145deg, var(--navy), #17214b); color: #fff; }
.principles-section .section-heading { color: #fff; }
.principles-section .section-heading p, .principles-section .eyebrow { color: #8fd6f3; }
.principle-stack { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.principle-card { display: grid; grid-template-columns: 52px 1fr; gap: 18px; padding: 26px; border: 1px solid rgba(255,255,255,0.10); border-radius: 20px; background: rgba(255,255,255,0.055); }
.principle-card > span { color: #79d2f5; font-weight: 850; }
.principle-card h3 { margin: 0 0 6px; }
.principle-card p { margin: 0; color: rgba(255,255,255,0.66); }

.roadmap-layout { display: grid; grid-template-columns: 0.48fr 1fr; gap: 18px; }
.phase-rail { display: grid; gap: 10px; }
.phase-tab {
  display: grid;
  gap: 4px;
  min-height: 82px;
  padding: 17px 18px;
  border: 1px solid var(--line);
  border-radius: 16px;
  text-align: left;
  background: var(--surface);
  cursor: pointer;
  transition: 160ms ease;
}
.phase-tab span { color: var(--blue); font-size: 0.72rem; font-weight: 850; text-transform: uppercase; letter-spacing: 0.13em; }
.phase-tab strong { font-size: 0.98rem; }
.phase-tab:hover, .phase-tab.active { transform: translateX(4px); border-color: rgba(28,154,214,0.44); background: linear-gradient(145deg, rgba(28,154,214,0.10), var(--surface)); }
.phase-panel { min-height: 440px; padding: 34px; border-radius: 24px; }
.phase-header { display: flex; justify-content: space-between; gap: 16px; align-items: center; }
.phase-badge, .phase-status { display: inline-flex; align-items: center; min-height: 28px; padding: 0 10px; border-radius: 999px; font-size: 0.7rem; font-weight: 850; text-transform: uppercase; letter-spacing: 0.12em; }
.phase-badge { color: #fff; background: var(--navy); }
.phase-status { color: #9b4e0e; background: rgba(245,130,32,0.14); }
.phase-panel h3 { margin: 28px 0 10px; font-size: 2.1rem; letter-spacing: -0.04em; }
.phase-panel > p { max-width: 720px; margin: 0; color: var(--muted); font-size: 1.04rem; }
.phase-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 30px; }
.phase-columns ul { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.phase-columns li { position: relative; padding: 13px 14px 13px 34px; border-radius: 12px; background: color-mix(in srgb, var(--surface-solid) 62%, transparent); }
.phase-columns li::before { content: "✓"; position: absolute; left: 13px; color: var(--blue); font-weight: 900; }
.capability-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 42px; }
.capability-grid article { padding: 24px; border-top: 1px solid var(--line); }
.capability-grid span { color: var(--blue); font-size: 0.72rem; font-weight: 850; letter-spacing: 0.14em; }
.capability-grid h3 { margin: 14px 0 7px; }
.capability-grid p { margin: 0; color: var(--muted); }

.priority-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.priority-list article { display: grid; grid-template-columns: 54px 1fr; gap: 20px; padding: 25px; border: 1px solid var(--line); border-radius: 19px; background: var(--surface); }
.priority-list article > span { color: var(--orange); font-weight: 900; }
.priority-list h3 { margin: 0 0 5px; }
.priority-list p { margin: 0; color: var(--muted); }

.outcome-section { width: min(1280px, calc(100% - 42px)); padding-top: 70px; }
.outcome-card { position: relative; overflow: hidden; padding: clamp(42px, 7vw, 92px); border-radius: 34px; color: #fff; background:
  radial-gradient(circle at 90% 15%, rgba(28,154,214,0.42), transparent 26rem),
  radial-gradient(circle at 10% 100%, rgba(245,130,32,0.20), transparent 24rem),
  linear-gradient(145deg, var(--navy), #101a3d); box-shadow: 0 30px 90px rgba(20,31,70,0.32); }
.outcome-card h2 { max-width: 900px; margin: 18px 0; font-size: clamp(2.6rem, 5vw, 5.2rem); line-height: 1.02; letter-spacing: -0.06em; }
.outcome-card > p { max-width: 780px; color: rgba(255,255,255,0.70); font-size: 1.1rem; }
.outcome-card blockquote { max-width: 850px; margin: 34px 0; padding-left: 24px; border-left: 4px solid var(--orange); font-size: 1.45rem; font-weight: 760; }
.outcome-card .primary-button { color: var(--navy); background: #fff; }
footer { display: flex; justify-content: space-between; gap: 20px; width: min(1180px, calc(100% - 72px)); margin: 0 auto; padding: 22px 0 34px; color: var(--muted); font-size: 0.82rem; border-top: 1px solid var(--line); }

@media (max-width: 1100px) {
  :root { --sidebar-width: 238px; }
  .sidebar { padding: 24px 16px; }
  .brand-copy small { display: none; }
  .hero-grid, .split-heading { grid-template-columns: 1fr; gap: 30px; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid, .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .architecture { grid-template-columns: repeat(2, 1fr); }
  .architecture-arrow { display: none; }
  .roadmap-layout { grid-template-columns: 1fr; }
  .phase-rail { grid-template-columns: repeat(5, 1fr); overflow-x: auto; padding-bottom: 4px; }
  .phase-tab { min-width: 180px; }
  .phase-tab:hover, .phase-tab.active { transform: translateY(-2px); }
}

@media (max-width: 780px) {
  .sidebar { display: none; }
  .mobile-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 40;
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 72px;
    padding: 10px 18px;
    border-bottom: 1px solid var(--line);
    background: color-mix(in srgb, var(--surface-solid) 90%, transparent);
    backdrop-filter: blur(16px);
  }
  .mobile-brand { text-decoration: none; }
  .mobile-brand .brand-mark { width: 42px; height: 42px; border-radius: 12px; font-size: 0.86rem; }
  .mobile-brand strong { font-size: 0.94rem; }
  .icon-button { width: 44px; height: 44px; padding: 0; border-radius: 14px; }
  .icon-button span { display: block; width: 18px; height: 2px; margin: 2px 0; background: var(--ink); }
  .mobile-menu {
    position: fixed;
    inset: 72px 0 auto 0;
    z-index: 39;
    padding: 18px;
    border-bottom: 1px solid var(--line);
    background: var(--surface-solid);
    box-shadow: var(--shadow);
  }
  .mobile-menu:not([hidden]) { display: grid; }
  .mobile-menu a { padding: 12px 8px; border-bottom: 1px solid var(--line); text-decoration: none; }
  main { margin-left: 0; padding-top: 72px; }
  .utility-bar { top: auto; right: 14px; bottom: 14px; }
  .utility-button span:last-child { display: none; }
  .utility-button { width: 46px; padding: 0; border-radius: 50%; }
  .section-block { width: min(100% - 32px, 680px); padding: 82px 0; }
  .hero { min-height: calc(100vh - 72px); padding-top: 72px; }
  .hero h1 { font-size: clamp(3rem, 14vw, 5.3rem); }
  .hero-grid { gap: 38px; }
  .metric-grid, .feature-grid, .principle-stack, .priority-list, .capability-grid, .phase-columns { grid-template-columns: 1fr; }
  .architecture { grid-template-columns: 1fr; }
  .architecture-node { min-height: 118px; }
  .architecture-detail { grid-template-columns: 1fr; }
  .principles-section { width: 100%; padding-left: 16px; padding-right: 16px; }
  .phase-panel { min-height: 0; padding: 25px; }
  .phase-header { align-items: flex-start; flex-direction: column; }
  .outcome-section { width: min(100% - 24px, 680px); }
  .outcome-card { border-radius: 25px; }
  footer { width: min(100% - 32px, 680px); flex-direction: column; }
}

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