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

:root {
  --bg: #060913;
  --surface: #0d1422;
  --surface-alt: #111b2c;
  --surface-soft: #142133;
  --glass: rgba(255, 255, 255, 0.045);
  --card-bg: rgba(13, 20, 34, 0.84);
  --border: rgba(148, 163, 184, 0.18);
  --border-strong: rgba(148, 163, 184, 0.32);
  --text: #f4f7fb;
  --text-dim: #9ba9bd;
  --accent: #18e0c2;
  --accent-dim: rgba(24, 224, 194, 0.12);
  --accent-border: rgba(24, 224, 194, 0.28);
  --indigo: #8b8cff;
  --blue: #4ba3ff;
  --red: #ef4444;
  --orange: #f59e0b;
  --yellow: #eab308;
  --green: #22c55e;
  --cyan: #06b6d4;
  --on-accent: #03100e;
  --radius: 8px;
  --copy-size: 0.94rem;
  --copy-line: 1.65;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "SF Mono", "Cascadia Code", "Fira Code", Consolas, monospace;
}

html[data-theme="light"] {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-alt: #eef3f8;
  --surface-soft: #e8f0f7;
  --glass: rgba(255, 255, 255, 0.72);
  --card-bg: rgba(255, 255, 255, 0.86);
  --border: rgba(15, 23, 42, 0.14);
  --border-strong: rgba(15, 23, 42, 0.24);
  --text: #0f172a;
  --text-dim: #526071;
  --accent: #008f7c;
  --accent-dim: rgba(0, 143, 124, 0.11);
  --accent-border: rgba(0, 124, 111, 0.3);
  --indigo: #4f46e5;
  --blue: #2563eb;
  --on-accent: #ffffff;
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background:
    radial-gradient(circle at 18% -10%, rgba(24, 224, 194, 0.16), transparent 36rem),
    radial-gradient(circle at 88% 2%, rgba(75, 163, 255, 0.14), transparent 34rem),
    var(--bg);
}

html[data-theme="light"] body {
  background:
    radial-gradient(circle at 16% -10%, rgba(0, 143, 124, 0.15), transparent 34rem),
    radial-gradient(circle at 88% 2%, rgba(37, 99, 235, 0.12), transparent 34rem),
    var(--bg);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  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: 64px 64px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.55), transparent 70%);
}

html[data-theme="light"] body::before {
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.05) 1px, transparent 1px);
}

a { color: var(--accent); text-decoration: none; transition: opacity 0.15s; }
a:hover { opacity: 0.8; }
::selection { background: var(--accent); color: var(--on-accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.narrow { width: min(900px, calc(100% - 48px)); margin: 0 auto; }
.mono { font-family: var(--mono); }

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(6, 9, 19, 0.82);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}

html[data-theme="light"] .site-nav { background: rgba(246, 248, 251, 0.86); }

.nav-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
}

.brand img { width: 32px; height: 32px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.88rem;
}

.nav-links a { color: var(--text-dim); white-space: nowrap; }
.nav-links a:hover,
.nav-links a[aria-current="page"] { color: var(--text); }

.nav-menu {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.nav-menu-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-menu-trigger::after {
  content: "";
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  opacity: 0.72;
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 14px);
  left: 0;
  min-width: 178px;
  display: grid;
  gap: 4px;
  padding: 8px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: rgba(13, 20, 34, 0.96);
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.24);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity 0.15s, transform 0.15s, visibility 0.15s;
}

.nav-dropdown::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -14px;
  height: 14px;
}

html[data-theme="light"] .nav-dropdown {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 18px 44px rgba(15, 23, 42, 0.14);
}

.nav-menu:hover .nav-dropdown,
.nav-menu:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.nav-dropdown a {
  display: block;
  padding: 10px 12px;
  border-radius: 6px;
  color: var(--text-dim);
}

.nav-dropdown a:hover,
.nav-dropdown a[aria-current="page"] {
  color: var(--text);
  background: var(--accent-dim);
}

.nav-cta {
  padding: 9px 14px;
  border-radius: var(--radius);
  background: var(--accent);
  color: var(--on-accent) !important;
  font-weight: 700;
}

.theme-toggle {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  color: var(--text);
  background: var(--glass);
  padding: 9px 12px;
  font: inherit;
  font-size: 0.84rem;
  font-weight: 700;
  cursor: pointer;
}

.hero {
  padding: 72px 0 54px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 48px;
  align-items: center;
}

.hero-label,
.section-tag,
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--accent-border);
  border-radius: 100px;
  padding: 6px 16px;
  margin-bottom: 22px;
}

h1,
h2,
h3,
p { margin-top: 0; }

h1 {
  max-width: 820px;
  margin-bottom: 24px;
  font-size: clamp(2.55rem, 5.2vw, 4.35rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.04;
}

.subtitle {
  max-width: 720px;
  margin-bottom: 28px;
  color: var(--text-dim);
  font-size: clamp(1.05rem, 2vw, 1.24rem);
  line-height: 1.75;
}

.hero-actions,
.button-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 700;
  transition: transform 0.15s, box-shadow 0.15s;
}

.btn:hover { transform: translateY(-1px); opacity: 1; }
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { box-shadow: 0 4px 20px rgba(24, 224, 194, 0.3); }
.btn-secondary { color: var(--text); background: var(--glass); border: 1px solid var(--border-strong); }

.hero-panel,
.callout,
.card,
.timeline-item,
.leaderboard-card,
.empty-state,
.locked-state,
.code-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.02)),
    var(--card-bg);
}

.hero-panel {
  position: relative;
  overflow: hidden;
  padding: 24px;
  box-shadow:
    0 28px 80px rgba(0, 0, 0, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, var(--accent), transparent 32%) top left / 100% 2px no-repeat,
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 100% 2px, 28px 28px, 28px 28px;
  opacity: 0.65;
}

.hero-panel > * { position: relative; z-index: 1; }

.panel-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 22px;
}

.panel-title {
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.status-pill,
.badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  border-radius: 100px;
  padding: 4px 9px;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--accent-border);
}

.fact-grid,
.summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.fact-card,
.summary-card {
  position: relative;
  overflow: hidden;
  min-height: 104px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.025));
}

.fact-card::before,
.summary-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent), rgba(139, 140, 255, 0.55));
}

.fact-card strong,
.summary-card strong {
  display: block;
  color: var(--text);
  font-family: var(--mono);
  font-size: 1.45rem;
  line-height: 1.1;
  margin-bottom: 8px;
}

.fact-card span,
.summary-card span {
  color: var(--text-dim);
  font-size: 0.84rem;
  line-height: 1.35;
}

section { padding: 58px 0; }
section[id] { scroll-margin-top: 84px; }
.section-tag { color: var(--indigo); margin-bottom: 12px; }

.section-title {
  max-width: 820px;
  margin-bottom: 12px;
  font-size: clamp(1.85rem, 4vw, 3rem);
  font-weight: 750;
  letter-spacing: -0.02em;
  line-height: 1.12;
}

.section-desc,
.section-kicker {
  max-width: 760px;
  color: var(--text-dim);
  font-size: var(--copy-size);
  line-height: var(--copy-line);
  margin-bottom: 30px;
}

.grid-2,
.grid-3 {
  display: grid;
  gap: 16px;
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.card,
.callout {
  padding: 24px;
}

.card h3,
.callout h3 {
  margin-bottom: 10px;
  font-size: 1.02rem;
}

.card p,
.callout p,
.card li,
.callout li {
  color: var(--text-dim);
  font-size: var(--copy-size);
  line-height: var(--copy-line);
}

.card ul,
.callout ul,
.plain-list {
  list-style: none;
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 0;
}

.card li::before,
.callout li::before,
.plain-list li::before {
  content: "+";
  color: var(--accent);
  margin-right: 8px;
}

.numbered-steps {
  list-style: none;
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 0;
  counter-reset: steps;
}

.numbered-steps li {
  counter-increment: steps;
  position: relative;
  display: block;
  min-height: 80px;
  padding: 18px 18px 18px 76px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--glass);
  color: var(--text-dim);
  font-size: var(--copy-size);
  line-height: var(--copy-line);
}

.numbered-steps li::before {
  content: counter(steps, decimal-leading-zero);
  position: absolute;
  left: 18px;
  top: 18px;
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--accent-border);
  font-family: var(--mono);
  font-weight: 800;
}

.timeline-list {
  display: grid;
  gap: 14px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 18px;
  padding: 20px;
}

.timeline-label {
  color: var(--accent);
  font-family: var(--mono);
  font-weight: 800;
}

.timeline-item h3 { margin-bottom: 4px; }
.timeline-date { color: var(--indigo); font-family: var(--mono); font-size: 0.84rem; margin-bottom: 8px; }
.timeline-item p:last-child { color: var(--text-dim); font-size: var(--copy-size); line-height: var(--copy-line); margin-bottom: 0; }

.score-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.score-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  background: var(--glass);
}

.score-weight {
  color: var(--accent);
  font-family: var(--mono);
  font-size: 1.45rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.score-card h3 { font-size: 0.98rem; margin-bottom: 8px; }
.score-card p { color: var(--text-dim); font-size: var(--copy-size); line-height: var(--copy-line); margin-bottom: 0; }

.warning {
  border-color: rgba(245, 158, 11, 0.34);
  background:
    linear-gradient(135deg, rgba(245, 158, 11, 0.12), rgba(245, 158, 11, 0.06)),
    var(--card-bg);
}

.danger {
  border-color: rgba(239, 68, 68, 0.34);
  background:
    linear-gradient(135deg, rgba(239, 68, 68, 0.12), rgba(239, 68, 68, 0.05)),
    var(--card-bg);
}

.code-panel {
  overflow-x: auto;
  padding: 18px;
}

pre,
code {
  font-family: var(--mono);
}

pre {
  margin: 0;
  color: var(--text);
  font-size: 0.86rem;
  line-height: 1.7;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

thead th {
  text-align: left;
  padding: 14px 16px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  background: var(--surface-alt);
  white-space: nowrap;
}

tbody td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--surface-alt); }

.leaderboard-cards { display: none; }

.leaderboard-card {
  padding: 18px;
}

.leaderboard-card-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.leaderboard-card h3 { margin-bottom: 4px; }
.leaderboard-card p { color: var(--text-dim); font-size: var(--copy-size); line-height: var(--copy-line); }
.leaderboard-card dl { display: grid; gap: 8px; margin: 14px 0 0; }
.leaderboard-card dl div { display: flex; justify-content: space-between; gap: 14px; border-top: 1px solid var(--border); padding-top: 8px; }
.leaderboard-card dt { color: var(--text-dim); }
.leaderboard-card dt,
.leaderboard-card dd { font-size: var(--copy-size); }
.leaderboard-card dd { margin: 0; color: var(--text); font-weight: 700; text-align: right; }

.empty-state,
.locked-state {
  padding: 24px;
  margin: 18px 0;
}
.empty-state p,
.locked-state p {
  color: var(--text-dim);
  font-size: var(--copy-size);
  line-height: var(--copy-line);
}

.empty-state[hidden],
.locked-state[hidden] { display: none; }

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--glass);
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 20px;
  color: var(--text);
  font-weight: 700;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: "+";
  float: right;
  color: var(--accent);
  font-family: var(--mono);
}

.faq-item[open] summary::after { content: "-"; }

.faq-item p {
  margin: 0;
  padding: 0 20px 20px;
  color: var(--text-dim);
  font-size: var(--copy-size);
  line-height: var(--copy-line);
}

footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.84rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 12px;
}

.footer-links a { color: var(--text-dim); }
.footer-links a:hover { color: var(--accent); }

@media (max-width: 1100px) {
  .nav-links { display: none; }
  .score-grid { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
}

@media (max-width: 920px) {
  .hero-grid,
  .grid-2,
  .grid-3 { grid-template-columns: 1fr; }
  .score-grid { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
  .timeline-item { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .desktop-table { display: none; }
  .leaderboard-cards { display: grid; gap: 14px; }
}

@media (max-width: 620px) {
  .container,
  .narrow { width: min(100% - 32px, 1180px); }
  .hero { padding-top: 56px; }
  h1 { font-size: 2.38rem; }
  .hero-actions,
  .button-row { align-items: stretch; flex-direction: column; }
  .btn { width: 100%; }
  .fact-grid,
  .summary-grid,
  .score-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}