:root {
  --green-950: #06140a;
  --green-900: #0a2412;
  --green-800: #1b5e20;
  --green-700: #2e7d32;
  --green-100: #d8ecd9;
  --ink: #0f1a14;
  --muted: #4a5c52;
  --paper: #f7faf7;
  --line: rgba(15, 26, 20, 0.12);
  --accent: #c4a35a;
  --white: #ffffff;
  --danger: #9b2c2c;
  --font-display: "Sora", system-ui, sans-serif;
  --font-body: "Source Sans 3", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
}

a { color: var(--green-800); }
a:hover { color: var(--green-700); }

.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 100;
  background: var(--white);
  padding: 0.5rem 0.75rem;
}

.wrap {
  width: min(1120px, calc(100% - 2.5rem));
  margin-inline: auto;
}

/* ── Nav ── */
.site-nav {
  position: absolute;
  inset: 0 0 auto;
  z-index: 20;
  padding: 1.1rem 0;
}
.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  text-decoration: none;
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 1.15rem;
}
.brand span {
  opacity: 0.72;
  font-weight: 500;
  font-size: 0.92rem;
}
.nav-links {
  display: flex;
  gap: 1.1rem;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nav-links a {
  color: rgba(255, 255, 255, 0.88);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
}
.nav-links a:hover { color: var(--white); }
.nav-cta {
  border: 1px solid rgba(255, 255, 255, 0.45);
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: min(92vh, 820px);
  display: grid;
  align-items: end;
  color: var(--white);
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(46, 125, 50, 0.35), transparent 60%),
    radial-gradient(ellipse 50% 40% at 15% 80%, rgba(196, 163, 90, 0.18), transparent 55%),
    linear-gradient(165deg, var(--green-950) 0%, var(--green-900) 48%, #12331a 100%);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.55), transparent 85%);
  pointer-events: none;
  animation: gridDrift 28s linear infinite;
}
@keyframes gridDrift {
  from { background-position: 0 0, 0 0; }
  to { background-position: 48px 24px, 24px 48px; }
}
.hero-inner {
  position: relative;
  z-index: 1;
  padding: 7.5rem 0 4.5rem;
  max-width: 46rem;
}
.hero-kicker {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  opacity: 0;
  animation: rise 0.7s ease forwards 0.15s;
}
.hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 6vw, 3.75rem);
  letter-spacing: -0.035em;
  line-height: 1.05;
  opacity: 0;
  animation: rise 0.8s ease forwards 0.28s;
}
.hero-lede {
  margin: 0 0 1.75rem;
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: rgba(255, 255, 255, 0.82);
  max-width: 36rem;
  opacity: 0;
  animation: rise 0.8s ease forwards 0.42s;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  opacity: 0;
  animation: rise 0.8s ease forwards 0.55s;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.7rem 1.2rem;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--white);
  color: var(--green-900);
}
.btn-primary:hover { background: var(--green-100); color: var(--green-950); }
.btn-ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.35);
}
.btn-ghost:hover { border-color: var(--white); color: var(--white); }

/* ── Sections ── */
section { padding: 4.25rem 0; }
.section-head {
  max-width: 40rem;
  margin-bottom: 2rem;
}
.section-head h2 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.5vw, 2.1rem);
  letter-spacing: -0.025em;
  line-height: 1.15;
}
.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.band-dark {
  background: var(--green-950);
  color: var(--white);
}
.band-dark .section-head p { color: rgba(255, 255, 255, 0.72); }
.band-dark a { color: var(--accent); }

.hedge {
  margin-top: 1.25rem;
  padding: 0.9rem 1rem;
  border-left: 3px solid var(--accent);
  background: rgba(196, 163, 90, 0.08);
  color: var(--muted);
  font-size: 0.95rem;
}
.band-dark .hedge {
  background: rgba(196, 163, 90, 0.12);
  color: rgba(255, 255, 255, 0.78);
}

/* ── Dimensions ── */
.dim-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}
.dim-row {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 1rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}
.dim-num {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--green-800);
  font-size: 1.05rem;
}
.dim-row h3 {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.dim-row p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

/* ── Leaderboard ── */
.lb-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-bottom: 1.25rem;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.7);
}
.lb-meta strong { color: var(--white); font-weight: 600; }

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: rgba(196, 163, 90, 0.2);
  color: var(--accent);
}
.status-pill.live {
  background: rgba(46, 125, 50, 0.3);
  color: #9be7a0;
}

.table-scroll {
  overflow-x: auto;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
}
table.leaderboard {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  min-width: 720px;
}
.leaderboard th,
.leaderboard td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.leaderboard th {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.03);
}
.leaderboard td { color: rgba(255, 255, 255, 0.9); }
.leaderboard tr:last-child td { border-bottom: none; }
.leaderboard .rank {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--accent);
  width: 2.5rem;
}
.leaderboard .model {
  font-weight: 600;
  font-family: var(--font-display);
}
.leaderboard .score {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}
.leaderboard .pending {
  color: rgba(255, 255, 255, 0.4);
  font-style: italic;
  font-weight: 400;
}

.lb-empty {
  padding: 2.5rem 1.5rem;
  text-align: center;
  border: 1px dashed rgba(255, 255, 255, 0.22);
  border-radius: 10px;
}
.lb-empty h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
}
.lb-empty p {
  margin: 0;
  color: rgba(255, 255, 255, 0.68);
  max-width: 36rem;
  margin-inline: auto;
}

/* ── Ecosystem / surfaces ── */
.surface-grid {
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 720px) {
  .surface-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 980px) {
  .surface-grid { grid-template-columns: repeat(4, 1fr); }
}
.surface {
  padding-top: 1rem;
  border-top: 2px solid var(--green-800);
}
.surface h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1rem;
}
.surface p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}
.surface .host {
  display: block;
  margin-top: 0.65rem;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--green-800);
  text-decoration: none;
}

/* ── CTA ── */
.cta-block {
  display: grid;
  gap: 1.5rem;
  align-items: center;
}
@media (min-width: 800px) {
  .cta-block { grid-template-columns: 1.4fr 1fr; }
}
.cta-block h2 { margin: 0 0 0.6rem; }
.cta-block p { margin: 0; color: var(--muted); }
.cta-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.btn-solid {
  background: var(--green-800);
  color: var(--white);
}
.btn-solid:hover { background: var(--green-900); color: var(--white); }
.btn-outline {
  background: transparent;
  color: var(--green-800);
  border-color: var(--green-800);
}
.btn-outline:hover { background: var(--green-800); color: var(--white); }

/* ── Method page ── */
.page-hero {
  background: linear-gradient(165deg, var(--green-950), var(--green-900));
  color: var(--white);
  padding: 7rem 0 3rem;
}
.page-hero h1 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  letter-spacing: -0.03em;
}
.page-hero p {
  margin: 0;
  max-width: 40rem;
  color: rgba(255, 255, 255, 0.78);
}
.prose {
  max-width: 42rem;
  margin: 0 auto;
  padding: 3rem 0 4rem;
}
.prose h2 {
  font-family: var(--font-display);
  margin: 2.25rem 0 0.75rem;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { color: var(--muted); }
.prose ul { padding-left: 1.2rem; }
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.95rem;
}
.prose th, .prose td {
  border-bottom: 1px solid var(--line);
  padding: 0.65rem 0.4rem;
  text-align: left;
  vertical-align: top;
}
.prose th {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ── Footer ── */
footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0 2.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
}
.footer-links a:hover { color: var(--green-800); }

@media (max-width: 640px) {
  .nav-links .nav-hide { display: none; }
  .hero-inner { padding-top: 6.5rem; }
}