:root {
  --ink: #122033;
  --navy: #0d1b2a;
  --muted: #657286;
  --line: #dce4ed;
  --paper: #fbfcfe;
  --white: #fff;
  --blue: #2d6cdf;
  --teal: #2b9c9b;
  --gold: #d69b3e;
  --coral: #d86d6b;
  --violet: #8066c4;
  --moss: #678b70;
  --radius: 24px;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--paper); }
a { color: inherit; }
a:focus-visible { outline: 3px solid rgba(45,108,223,.35); outline-offset: 4px; }
.shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.skip-link { position: absolute; left: 20px; top: -60px; z-index: 5; padding: 10px 14px; border-radius: 9px; color: white; background: var(--navy); }
.skip-link:focus { top: 15px; }

.site-header { position: sticky; top: 0; z-index: 3; border-bottom: 1px solid rgba(220,228,237,.85); background: rgba(251,252,254,.88); backdrop-filter: blur(18px); }
.nav-row, .footer-row { display: flex; align-items: center; justify-content: space-between; min-height: 70px; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-size: 14px; font-weight: 800; letter-spacing: -.02em; text-decoration: none; }
.brand em { color: var(--blue); font-style: normal; }
.brand-mark { display: grid; place-items: center; width: 29px; height: 29px; border-radius: 9px; background: var(--navy); box-shadow: 0 6px 14px rgba(13,27,42,.16); }
.brand-mark::before { content: ""; width: 14px; height: 14px; border: 2px solid #f0c76b; border-radius: 50%; }
.brand-mark i { position: absolute; width: 4px; height: 4px; border-radius: 50%; background: #8bd3c0; }
.nav-row nav, .footer-row div { display: flex; align-items: center; gap: 23px; }
.nav-row nav a, .footer-row a { color: var(--muted); font-size: 12px; font-weight: 700; text-decoration: none; }
.nav-row nav a:hover, .footer-row a:hover { color: var(--ink); }
.nav-link-main { padding: 10px 13px; border: 1px solid var(--line); border-radius: 10px; background: var(--white); }

.hero { display: grid; grid-template-columns: minmax(0, .9fr) minmax(420px, 1.1fr); align-items: center; gap: 72px; min-height: 620px; padding-top: 54px; padding-bottom: 64px; }
.hero-copy { max-width: 570px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--blue); font: 700 11px/1.3 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .14em; text-transform: uppercase; }
.signal-dot { width: 7px; height: 7px; border-radius: 50%; background: #49b987; box-shadow: 0 0 0 4px rgba(73,185,135,.13); }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 620px; margin-bottom: 22px; font-size: clamp(48px, 6vw, 82px); line-height: .96; letter-spacing: -.075em; }
.hero-lede { max-width: 500px; margin-bottom: 28px; color: #46566b; font-size: clamp(18px, 2vw, 22px); line-height: 1.55; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 46px; padding: 0 17px; border: 1px solid var(--line); border-radius: 11px; font-size: 13px; font-weight: 800; text-decoration: none; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.button:hover { transform: translateY(-2px); box-shadow: 0 10px 20px rgba(13,27,42,.08); }
.button-primary { border-color: var(--navy); color: #fff; background: var(--navy); }
.button-quiet { background: var(--white); }
.button-light { border-color: rgba(255,255,255,.25); color: var(--navy); background: #fff; }
.hero-note { max-width: 450px; margin-top: 22px; color: var(--muted); font-size: 12px; line-height: 1.6; }
.hero-note strong { color: var(--ink); }

.field-visual { position: relative; min-height: 430px; overflow: hidden; border: 1px solid #dce6ef; border-radius: 32px; background: #f6f9fc; box-shadow: 0 26px 70px rgba(43,73,106,.08); }
.field-grid { position: absolute; inset: 0; opacity: .75; background-image: radial-gradient(#c4d1df 1px, transparent 1px); background-size: 22px 22px; }
.field-orbit { position: absolute; left: 50%; top: 50%; border: 1px solid rgba(45,108,223,.2); border-radius: 50%; transform: translate(-50%, -50%) rotate(-22deg); }
.orbit-a { width: 78%; height: 45%; }
.orbit-b { width: 55%; height: 74%; transform: translate(-50%, -50%) rotate(58deg); border-color: rgba(43,156,155,.22); }
.field-core { position: absolute; left: 50%; top: 50%; display: grid; place-items: center; width: 120px; height: 120px; border: 10px solid rgba(255,255,255,.72); border-radius: 50%; outline: 1px solid rgba(45,108,223,.24); background: var(--navy); color: #fff; transform: translate(-50%, -50%); box-shadow: 0 0 0 14px rgba(45,108,223,.06), 0 18px 35px rgba(13,27,42,.2); }
.field-core strong { font-size: 14px; letter-spacing: -.04em; }
.field-core span { color: #9cb1c5; font: 8px ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .12em; }
.field-node { position: absolute; display: grid; gap: 3px; min-width: 122px; padding: 12px 14px; border: 1px solid #d7e1eb; border-radius: 13px; background: rgba(255,255,255,.91); box-shadow: 0 12px 24px rgba(39,64,90,.08); }
.field-node::before { content: ""; position: absolute; left: -6px; top: 18px; width: 10px; height: 10px; border-radius: 50%; background: var(--node-color); box-shadow: 0 0 0 4px color-mix(in srgb, var(--node-color) 18%, transparent); }
.field-node b { font-size: 12px; }
.field-node small { color: var(--muted); font-size: 10px; }
.node-funlab { --node-color: var(--coral); left: 11%; top: 17%; }
.node-vidya { --node-color: var(--gold); right: 10%; top: 21%; }
.node-varsha { --node-color: var(--moss); right: 12%; bottom: 16%; }

.section { padding-top: 42px; padding-bottom: 90px; }
.section-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, .58fr); gap: 54px; align-items: end; margin-bottom: 42px; }
.section-heading h2 { max-width: 680px; margin: 10px 0 0; font-size: clamp(30px, 4vw, 50px); line-height: 1.02; letter-spacing: -.06em; }
.section-heading > p { max-width: 390px; margin-bottom: 3px; color: var(--muted); font-size: 14px; line-height: 1.7; }
.world-group + .world-group { margin-top: 56px; }
.group-label { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.group-label > span { color: #9ba8b8; font: 11px ui-monospace, SFMono-Regular, Menlo, monospace; }
.group-label div { display: grid; gap: 3px; }
.group-label strong { font-size: 13px; }
.group-label small { color: var(--muted); font-size: 11px; }
.world-grid { display: grid; gap: 14px; }
.world-grid-three { grid-template-columns: repeat(3, 1fr); }
.world-grid-two { grid-template-columns: repeat(2, 1fr); }
.world-card { position: relative; display: flex; min-height: 310px; flex-direction: column; padding: 24px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); box-shadow: 0 9px 20px rgba(35,59,85,.035); }
.world-card::after { content: ""; position: absolute; right: -48px; bottom: -54px; width: 150px; height: 150px; border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent); border-radius: 50%; opacity: .75; }
.world-card:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); box-shadow: 0 17px 34px rgba(35,59,85,.09); }
.accent-coral { --accent: var(--coral); }
.accent-violet { --accent: var(--violet); }
.accent-teal { --accent: var(--teal); }
.accent-gold { --accent: var(--gold); }
.accent-moss { --accent: var(--moss); }
.card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 23px; }
.card-kicker { color: var(--accent); font: 700 10px ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .07em; text-transform: uppercase; }
.status { flex: 0 0 auto; padding: 5px 8px; border-radius: 99px; font-size: 9px; font-weight: 800; }
.status-live { color: #1b815d; background: #e6f6ef; }
.status-progress { color: #8b671f; background: #fff4dc; }
.world-card h3 { margin-bottom: 11px; font-size: 28px; letter-spacing: -.055em; }
.world-card p { max-width: 400px; margin-bottom: 21px; color: #5c697a; font-size: 14px; line-height: 1.65; }
.card-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; margin-bottom: 18px; color: #8996a5; font: 10px ui-monospace, SFMono-Regular, Menlo, monospace; }
.card-meta span + span::before { content: "·"; margin-right: 8px; color: var(--accent); }
.card-link { position: relative; z-index: 1; display: inline-flex; align-items: center; justify-content: space-between; padding-top: 14px; border-top: 1px solid var(--line); color: var(--ink); font-size: 12px; font-weight: 850; text-decoration: none; }
.card-link span { color: var(--accent); font-size: 18px; }
.featured-card { min-height: 290px; }

.principles-section { padding: 92px 0; color: #edf4f7; background: var(--navy); }
.section-heading-tight { margin-bottom: 38px; }
.principles-section .eyebrow { color: #8bd3c0; }
.principles-section .section-heading h2 { color: #fff; }
.principles-section .section-heading > p { color: #a6b7c8; }
.principles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; overflow: hidden; border: 1px solid rgba(255,255,255,.13); border-radius: var(--radius); background: rgba(255,255,255,.13); }
.principles-grid article { min-height: 205px; padding: 24px; background: rgba(255,255,255,.04); }
.principle-mark { display: grid; place-items: center; width: 30px; height: 30px; margin-bottom: 32px; border: 1px solid rgba(139,211,192,.5); border-radius: 50%; color: #8bd3c0; font: 11px ui-monospace, SFMono-Regular, Menlo, monospace; }
.principles-grid h3 { margin-bottom: 9px; color: #fff; font-size: 17px; letter-spacing: -.03em; }
.principles-grid p { margin-bottom: 0; color: #a6b7c8; font-size: 13px; line-height: 1.65; }
.closing-section { padding-top: 82px; padding-bottom: 82px; }
.closing-card { display: grid; grid-template-columns: 1.05fr 1fr auto; gap: 34px; align-items: center; padding: 34px; border-radius: var(--radius); background: #e6f1f0; }
.closing-card h2 { max-width: 400px; margin: 11px 0 0; font-size: clamp(25px, 3vw, 38px); line-height: 1.04; letter-spacing: -.06em; }
.closing-card p { margin: 0; color: #5c6f74; font-size: 13px; line-height: 1.7; }
.site-footer { border-top: 1px solid var(--line); background: var(--white); }
.footer-row { min-height: 76px; color: #8a96a4; font-size: 11px; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 40px; min-height: auto; padding-top: 72px; }
  .field-visual { min-height: 380px; }
  .section-heading, .closing-card { grid-template-columns: 1fr; gap: 17px; }
  .closing-card .button { justify-self: start; }
}
@media (max-width: 700px) {
  .shell { width: min(100% - 28px, 1180px); }
  .nav-row { min-height: 62px; }
  .nav-row nav a:not(.nav-link-main) { display: none; }
  .nav-link-main { padding: 8px 9px; font-size: 10px !important; }
  h1 { font-size: clamp(47px, 16vw, 68px); }
  .world-grid-three, .world-grid-two, .principles-grid { grid-template-columns: 1fr; }
  .world-card { min-height: 270px; }
  .field-visual { min-height: 330px; }
  .field-node { min-width: 105px; padding: 10px; }
  .node-funlab { left: 5%; top: 13%; }
  .node-vidya { right: 5%; top: 18%; }
  .node-varsha { right: 5%; bottom: 10%; }
  .footer-row { align-items: flex-start; flex-direction: column; justify-content: center; gap: 10px; padding: 17px 0; }
  .footer-row div { flex-wrap: wrap; gap: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}