:root {
  color-scheme: dark;
  --bg: #06090d;
  --panel: rgba(15, 21, 28, .9);
  --panel-2: #0d131a;
  --line: #27313b;
  --text: #edf4f7;
  --muted: #9ba9b4;
  --cyan: #20e6e6;
  --green: #4cff43;
  --red: #ff3d48;
  --shadow: 0 20px 80px rgba(0,0,0,.35);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); color: var(--text); }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at 50% 0%, rgba(0,210,220,.08), transparent 32%), linear-gradient(180deg, #06090d 0%, #080c11 45%, #06090d 100%); }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }
.hidden { display: none !important; }

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .18;
  background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.8), transparent 70%);
}

.landing-nav {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: minmax(130px, 160px) 1fr auto;
  align-items: center;
  gap: 24px;
  min-height: 92px;
  padding: 6px clamp(16px, 4vw, 56px);
  border-bottom: 1px solid var(--line);
  background: rgba(6,9,13,.86);
  backdrop-filter: blur(18px);
}
.landing-brand { display: inline-flex; align-items: center; }
.landing-brand img { display: block; width: 114px; height: auto; object-fit: contain; object-position: left center; }
.landing-nav nav { display: flex; justify-content: center; gap: 28px; color: var(--muted); font-size: 13px; }
.landing-nav nav a:hover, .landing-nav nav a:focus-visible { color: var(--text); }
.nav-actions, .hero-actions { display: flex; align-items: center; gap: 10px; }

.primary-btn, .ghost-btn, .google-btn, .auth-tabs button {
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 40px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  letter-spacing: .01em;
}
.primary-btn { color: #021012; background: linear-gradient(135deg, var(--green), var(--cyan)); border-color: transparent; }
.primary-btn:hover { filter: brightness(1.06); }
.ghost-btn { color: var(--text); background: rgba(255,255,255,.025); }
.ghost-btn:hover { background: rgba(255,255,255,.07); }
.google-btn { width: 100%; color: var(--text); background: #151b22; }
.full { width: 100%; border: 0; }

.hero {
  position: relative;
  min-height: 78vh;
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
  padding: 72px 0 88px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}
.hero-glow { position: absolute; width: 760px; height: 360px; border-radius: 50%; filter: blur(80px); background: radial-gradient(circle, rgba(27,223,230,.14), rgba(76,255,67,.05) 40%, transparent 72%); z-index: -1; }
.hero-logo { width: min(760px, 92vw); height: auto; aspect-ratio: 3 / 2; object-fit: contain; filter: drop-shadow(0 22px 38px rgba(0,0,0,.5)); }
.eyebrow, .section-kicker { margin: 16px 0 8px; color: var(--cyan); font-size: 12px; font-weight: 900; letter-spacing: .24em; text-transform: uppercase; }
.hero h1 { max-width: 1000px; margin: 12px auto 14px; font-size: clamp(2.4rem, 6vw, 5.4rem); line-height: .98; letter-spacing: -.045em; }
.hero-copy { max-width: 780px; margin: 0 auto 24px; color: var(--muted); font-size: clamp(1rem, 1.8vw, 1.22rem); line-height: 1.65; }
.signal-row { display: flex; gap: 22px; margin-top: 28px; color: var(--muted); font-size: 12px; }
.signal { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; }
.signal.green { background: var(--green); box-shadow: 0 0 12px rgba(76,255,67,.75); }
.signal.cyan { background: var(--cyan); box-shadow: 0 0 12px rgba(32,230,230,.75); }
.signal.red { background: var(--red); box-shadow: 0 0 12px rgba(255,61,72,.75); }

.content-section { width: min(1120px, calc(100% - 32px)); margin: 0 auto; padding: 84px 0; border-top: 1px solid rgba(255,255,255,.06); }
.content-section h2 { margin: 0 0 24px; max-width: 900px; font-size: clamp(2rem, 4vw, 3.7rem); line-height: 1.05; letter-spacing: -.03em; }
.mission-copy { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 32px; }
.mission-copy p, .standards-copy p { margin: 0; color: #c4ced5; line-height: 1.78; }

.principle-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.principle-card { min-height: 230px; padding: 24px; border: 1px solid var(--line); border-radius: 14px; background: linear-gradient(180deg, rgba(18,25,33,.92), rgba(9,14,20,.92)); box-shadow: var(--shadow); }
.principle-card h3 { margin: 22px 0 10px; font-size: 1.2rem; }
.principle-card p { margin: 0; color: var(--muted); line-height: 1.65; }
.card-index { color: var(--green); font-size: 11px; font-weight: 900; letter-spacing: .18em; }

.purpose-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: var(--panel); }
.purpose-grid article { padding: 24px; display: grid; gap: 8px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.purpose-grid article:nth-child(even) { border-right: 0; }
.purpose-grid article:nth-last-child(-n+2) { border-bottom: 0; }
.purpose-grid strong { font-size: 1.05rem; }
.purpose-grid span { color: var(--muted); line-height: 1.55; }

.standards-section { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 60px; align-items: start; }
.standards-copy { display: grid; gap: 18px; }
.text-link { color: var(--cyan); font-weight: 800; }

.join-section { display: grid; grid-template-columns: minmax(0, 1fr) minmax(360px, .78fr); gap: 56px; align-items: start; }
.join-copy > p:not(.section-kicker) { color: var(--muted); line-height: 1.7; }
.join-points { display: grid; gap: 10px; margin-top: 24px; color: #c9d6dc; }
.auth-card { padding: 24px; border: 1px solid var(--line); border-radius: 14px; background: linear-gradient(180deg, rgba(18,25,33,.96), rgba(8,12,17,.96)); box-shadow: var(--shadow); }
.auth-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-bottom: 14px; }
.auth-tabs button { background: transparent; color: var(--muted); }
.auth-tabs button.active { color: var(--text); border-color: #4b6571; background: rgba(32,230,230,.08); }
.auth-divider { display: flex; align-items: center; gap: 10px; color: #70808b; font-size: 11px; margin: 18px 0; }
.auth-divider::before, .auth-divider::after { content: ""; flex: 1; height: 1px; background: var(--line); }
#auth-form { display: grid; gap: 8px; }
#auth-form label { margin-top: 6px; font-size: 12px; font-weight: 800; color: #c5d0d7; }
#auth-form input { width: 100%; height: 44px; border-radius: 8px; border: 1px solid #35414c; background: #070b10; color: var(--text); padding: 0 12px; outline: none; }
#auth-form input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(32,230,230,.1); }
.auth-status { min-height: 22px; margin: 4px 0 0; color: var(--muted); font-size: 12px; }
.auth-status.error { color: #ff8d94; }
.auth-status.success { color: #78ff72; }
.auth-consent { color: #77858f; font-size: 11px; line-height: 1.55; }
.auth-consent a { color: #b9c7cf; text-decoration: underline; }

.landing-footer { width: min(1120px, calc(100% - 32px)); margin: 0 auto; padding: 34px 0 54px; border-top: 1px solid var(--line); display: grid; grid-template-columns: 220px 1fr; gap: 24px 40px; align-items: start; }
.footer-brand { display: grid; gap: 6px; }
.footer-brand img { width: 180px; height: auto; }
.footer-brand span { color: #7f8d97; font-size: 9px; letter-spacing: .22em; }
.landing-footer nav { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 20px; color: var(--muted); font-size: 12px; }
.disclaimer { grid-column: 1 / -1; margin: 0; color: #6f7d86; font-size: 11px; line-height: 1.6; }

.legal-page { width: min(900px, calc(100% - 32px)); margin: 0 auto; padding: 56px 0 96px; }
.legal-page h1 { font-size: clamp(2.3rem, 6vw, 4.5rem); margin-bottom: 16px; }
.legal-page h2 { margin-top: 42px; }
.legal-page p, .legal-page li { color: #c3cdd4; line-height: 1.72; }
.legal-page .legal-note { padding: 16px 18px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); color: var(--muted); }

:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

@media (max-width: 900px) {
  .landing-nav { grid-template-columns: 128px 1fr; }
  .landing-nav nav { display: none; }
  .nav-actions { justify-content: flex-end; }
  .principle-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .standards-section, .join-section { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 640px) {
  .landing-nav { grid-template-columns: 92px 1fr; gap: 10px; min-height: 72px; padding-inline: 12px; }
  .landing-brand img { width: 84px; height: auto; }
  .nav-actions .ghost-btn { display: none; }
  .nav-actions .primary-btn { min-height: 36px; padding-inline: 12px; font-size: 12px; }
  .hero { min-height: auto; padding: 46px 0 66px; }
  .hero h1 { font-size: clamp(2.15rem, 12vw, 3.5rem); }
  .hero-actions { flex-direction: column; width: 100%; max-width: 320px; }
  .hero-actions > * { width: 100%; }
  .signal-row { flex-direction: column; gap: 8px; text-align: left; }
  .content-section { padding: 62px 0; }
  .mission-copy, .principle-grid, .purpose-grid { grid-template-columns: 1fr; }
  .purpose-grid article { border-right: 0; border-bottom: 1px solid var(--line) !important; }
  .purpose-grid article:last-child { border-bottom: 0 !important; }
  .join-section { grid-template-columns: 1fr; }
  .auth-card { padding: 18px; }
  .landing-footer { grid-template-columns: 1fr; }
  .landing-footer nav { justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}