:root {
  color-scheme: dark;
  --bg: #07111f;
  --bg-soft: #0d1a2e;
  --panel: rgba(10, 18, 31, 0.72);
  --panel-strong: rgba(13, 24, 43, 0.92);
  --line: rgba(185, 219, 255, 0.14);
  --text: #f5f7ff;
  --muted: #9fb4d0;
  --mint: #7ef0cf;
  --sky: #7ab8ff;
  --gold: #ffd47d;
  --rose: #ff8ab3;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
}

[data-theme="light"] {
  color-scheme: light;
  --bg: #f6f1e8;
  --bg-soft: #efe6d8;
  --panel: rgba(255, 251, 245, 0.88);
  --panel-strong: rgba(255, 252, 248, 0.97);
  --line: rgba(92, 73, 46, 0.12);
  --text: #1e2a3a;
  --muted: #6f7b8d;
  --mint: #2d7a67;
  --sky: #456fd1;
  --gold: #b8872d;
  --rose: #be5e78;
  --shadow: 0 22px 60px rgba(113, 94, 71, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 15% 20%, rgba(122, 184, 255, 0.16), transparent 22%),
    radial-gradient(circle at 80% 10%, rgba(255, 138, 179, 0.14), transparent 22%),
    radial-gradient(circle at 70% 75%, rgba(126, 240, 207, 0.14), transparent 24%),
    linear-gradient(180deg, #040a14 0%, #07111f 36%, #0a1424 100%);
  color: var(--text);
  font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
}

[data-theme="light"] body {
  background:
    radial-gradient(circle at 12% 18%, rgba(184, 135, 45, 0.08), transparent 26%),
    radial-gradient(circle at 84% 14%, rgba(190, 94, 120, 0.08), transparent 24%),
    radial-gradient(circle at 70% 80%, rgba(45, 122, 103, 0.07), transparent 24%),
    linear-gradient(180deg, #fbf7f1 0%, #f6f1e8 38%, #f1eadf 100%);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--text);
  text-decoration: none;
}

a:hover {
  color: var(--mint);
}

code {
  padding: 0.14rem 0.38rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.92em;
}

.aurora {
  position: fixed;
  z-index: -1;
  width: 34rem;
  height: 34rem;
  filter: blur(40px);
  opacity: 0.42;
  border-radius: 50%;
}

.aurora-one {
  top: -10rem;
  right: -8rem;
  background: radial-gradient(circle, rgba(122, 184, 255, 0.4), transparent 60%);
}

.aurora-two {
  left: -10rem;
  bottom: -12rem;
  background: radial-gradient(circle, rgba(255, 138, 179, 0.34), transparent 62%);
}

[data-theme="light"] .aurora {
  opacity: 0.36;
}

.shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 16px;
  z-index: 10;
  width: min(1180px, calc(100% - 40px));
  margin: 20px auto 0;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(9, 17, 30, 0.72);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

[data-theme="light"] .topbar {
  background: rgba(255, 250, 244, 0.82);
  border-color: rgba(111, 88, 56, 0.12);
}

.brand {
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.menu {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.menu a {
  color: var(--muted);
  font-size: 0.95rem;
}

[data-theme="light"] .menu a:hover,
[data-theme="light"] .brand:hover {
  color: #5c4732;
}

.theme-toggle {
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.theme-toggle:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.12);
}

[data-theme="light"] .theme-toggle {
  background: rgba(86, 66, 42, 0.05);
  border-color: rgba(111, 88, 56, 0.12);
}

.hero {
  padding: 72px 0 48px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  align-items: center;
}

.hero-copy,
.glass-card,
.overview-card,
.feature-card,
.program-card,
.download-card,
.setup-card,
.tip-card,
.footer-card {
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 40px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, rgba(19, 35, 62, 0.88), rgba(8, 15, 27, 0.92)),
    var(--panel-strong);
}

[data-theme="light"] .hero-copy {
  background:
    linear-gradient(135deg, rgba(255, 252, 247, 0.96), rgba(246, 238, 226, 0.98)),
    var(--panel-strong);
}

.eyebrow,
.section-kicker,
.download-label {
  margin: 0 0 14px;
  color: var(--mint);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 12ch;
  font-size: clamp(2.8rem, 5vw, 5.5rem);
  line-height: 0.96;
  letter-spacing: -0.05em;
}

h2 {
  font-size: clamp(2rem, 3vw, 3.2rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

h3 {
  font-size: 1.28rem;
  line-height: 1.15;
}

.lead {
  max-width: 60ch;
  color: #d7e1f3;
  font-size: 1.05rem;
}

[data-theme="light"] .lead {
  color: #4a596d;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 28px 0 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
  color: inherit;
  text-decoration: none;
}

.button-primary {
  background: linear-gradient(135deg, var(--mint), #92f7e2);
  color: #041018;
}

.button-primary:hover {
  color: #041018;
  background: linear-gradient(135deg, #8cf5dc, #a5f8e8);
}

[data-theme="light"] .button-primary {
  background: linear-gradient(135deg, #c7963d, #e0b96f);
  color: #2f2417;
}

[data-theme="light"] .button-primary:hover {
  color: #2f2417;
  background: linear-gradient(135deg, #d0a04b, #e7c685);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.button-secondary:hover {
  color: var(--text);
}

[data-theme="light"] .button-secondary {
  background: rgba(86, 66, 42, 0.06);
  border: 1px solid rgba(111, 88, 56, 0.12);
}

[data-theme="light"] .button-primary:hover {
  color: #041018;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
  color: var(--muted);
}

.hero-points li {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

[data-theme="light"] .hero-points li {
  background: rgba(86, 66, 42, 0.04);
  border-color: rgba(92, 73, 46, 0.1);
}

.hero-panel {
  display: grid;
  gap: 18px;
}

.glass-card {
  padding: 24px;
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(20, 34, 60, 0.72), rgba(11, 20, 36, 0.84));
  backdrop-filter: blur(18px);
}

[data-theme="light"] .glass-card {
  background: linear-gradient(180deg, rgba(255, 251, 246, 0.9), rgba(244, 236, 226, 0.95));
}

.pulse-card {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.mini-stat {
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
}

[data-theme="light"] .mini-stat {
  background: rgba(86, 66, 42, 0.04);
}

.mini-stat span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.mini-stat strong {
  font-size: 1.1rem;
}

.art-stack {
  display: grid;
  gap: 18px;
}

.art-stack img {
  width: 100%;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}

[data-theme="light"] .art-stack img {
  border-color: rgba(92, 73, 46, 0.1);
  background: rgba(255, 250, 245, 0.82);
}

.overview {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 20px;
  margin-bottom: 38px;
}

.overview-card,
.feature-card,
.program-card,
.download-card,
.setup-card,
.tip-card,
.footer-card {
  background: linear-gradient(180deg, rgba(16, 28, 48, 0.82), rgba(9, 18, 31, 0.92));
  border-radius: var(--radius-xl);
}

[data-theme="light"] .overview-card,
[data-theme="light"] .feature-card,
[data-theme="light"] .program-card,
[data-theme="light"] .download-card,
[data-theme="light"] .setup-card,
[data-theme="light"] .tip-card,
[data-theme="light"] .footer-card {
  background: linear-gradient(180deg, rgba(255, 252, 247, 0.94), rgba(244, 236, 226, 0.98));
  border-color: rgba(111, 88, 56, 0.1);
}

.overview-card {
  padding: 30px;
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature-card {
  padding: 24px;
}

.feature-card img {
  width: 52px;
  height: 52px;
  margin-bottom: 22px;
}

.section-head {
  max-width: 760px;
  margin-bottom: 22px;
}

.section-head p {
  color: var(--muted);
}

.program-grid,
.downloads-grid,
.setup-grid {
  display: grid;
  gap: 18px;
}

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

.program-card {
  padding: 24px;
}

.featured {
  background:
    linear-gradient(135deg, rgba(126, 240, 207, 0.12), rgba(122, 184, 255, 0.08)),
    linear-gradient(180deg, rgba(16, 28, 48, 0.82), rgba(9, 18, 31, 0.92));
}

[data-theme="light"] .featured {
  background:
    linear-gradient(135deg, rgba(199, 150, 61, 0.12), rgba(224, 185, 111, 0.08)),
    linear-gradient(180deg, rgba(255, 252, 247, 0.95), rgba(244, 236, 226, 0.98));
}

.program-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
}

.program-number {
  font-size: 0.9rem;
  color: var(--muted);
  letter-spacing: 0.22em;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #dbe5f7;
  font-size: 0.82rem;
}

[data-theme="light"] .badge {
  background: rgba(86, 66, 42, 0.08);
  color: #5b4d3d;
}

.badge-live {
  background: rgba(126, 240, 207, 0.14);
  color: var(--mint);
}

[data-theme="light"] .badge-live {
  background: rgba(199, 150, 61, 0.16);
  color: #7a5824;
}

.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-top: 18px;
}

.card-links a {
  color: var(--sky);
  font-weight: 600;
}

[data-theme="light"] .card-links a {
  color: #3f67b5;
}

[data-theme="light"] .card-links a:hover {
  color: #6c4f28;
}

.muted-link {
  color: var(--muted);
}

.downloads-section,
.setup-section,
.openrouter-section,
.footer-card {
  margin-top: 38px;
}

.downloads-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.download-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  min-height: 220px;
  padding: 22px;
}

.download-card.ready {
  background:
    linear-gradient(135deg, rgba(255, 212, 125, 0.16), rgba(122, 184, 255, 0.08)),
    linear-gradient(180deg, rgba(16, 28, 48, 0.82), rgba(9, 18, 31, 0.92));
}

[data-theme="light"] .download-card.ready {
  background:
    linear-gradient(135deg, rgba(199, 150, 61, 0.12), rgba(233, 206, 152, 0.08)),
    linear-gradient(180deg, rgba(255, 252, 247, 0.95), rgba(244, 236, 226, 0.98));
}

.download-card.pending {
  opacity: 0.88;
}

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

.setup-card,
.tip-card,
.footer-card {
  padding: 24px;
}

.install-option + .install-option {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.install-label {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tip-card {
  margin-top: 18px;
}

.tip-card ol,
.checklist ol,
.notes ul {
  margin-bottom: 0;
  padding-left: 1.2rem;
  color: var(--text);
}

.checklist li,
.notes li,
.tip-card li {
  color: var(--text);
}

.openrouter-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.checklist,
.notes {
  min-height: 100%;
}

.notes ul {
  list-style: square;
}

.source-line {
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.94rem;
}

[data-theme="light"] .overview-card {
  background:
    linear-gradient(135deg, rgba(245, 228, 199, 0.28), rgba(255, 252, 247, 0)),
    linear-gradient(180deg, rgba(255, 252, 247, 0.96), rgba(244, 236, 226, 0.98));
}

[data-theme="light"] .feature-card:nth-child(1) {
  background:
    linear-gradient(135deg, rgba(211, 227, 248, 0.42), rgba(255, 252, 247, 0)),
    linear-gradient(180deg, rgba(255, 252, 247, 0.95), rgba(244, 236, 226, 0.98));
}

[data-theme="light"] .feature-card:nth-child(2) {
  background:
    linear-gradient(135deg, rgba(235, 224, 196, 0.42), rgba(255, 252, 247, 0)),
    linear-gradient(180deg, rgba(255, 252, 247, 0.95), rgba(244, 236, 226, 0.98));
}

[data-theme="light"] .feature-card:nth-child(3) {
  background:
    linear-gradient(135deg, rgba(214, 234, 223, 0.42), rgba(255, 252, 247, 0)),
    linear-gradient(180deg, rgba(255, 252, 247, 0.95), rgba(244, 236, 226, 0.98));
}

[data-theme="light"] .program-card:not(.featured):nth-child(2) {
  background:
    linear-gradient(135deg, rgba(214, 234, 223, 0.34), rgba(255, 252, 247, 0)),
    linear-gradient(180deg, rgba(255, 252, 247, 0.95), rgba(244, 236, 226, 0.98));
}

[data-theme="light"] .program-card:not(.featured):nth-child(3) {
  background:
    linear-gradient(135deg, rgba(245, 228, 199, 0.34), rgba(255, 252, 247, 0)),
    linear-gradient(180deg, rgba(255, 252, 247, 0.95), rgba(244, 236, 226, 0.98));
}

[data-theme="light"] .program-card:not(.featured):nth-child(4) {
  background:
    linear-gradient(135deg, rgba(211, 227, 248, 0.34), rgba(255, 252, 247, 0)),
    linear-gradient(180deg, rgba(255, 252, 247, 0.95), rgba(244, 236, 226, 0.98));
}

[data-theme="light"] .program-card:not(.featured):nth-child(5) {
  background:
    linear-gradient(135deg, rgba(238, 218, 228, 0.3), rgba(255, 252, 247, 0)),
    linear-gradient(180deg, rgba(255, 252, 247, 0.95), rgba(244, 236, 226, 0.98));
}

[data-theme="light"] .program-card:not(.featured):nth-child(6),
[data-theme="light"] .program-card:not(.featured):nth-child(7) {
  background:
    linear-gradient(135deg, rgba(228, 223, 211, 0.3), rgba(255, 252, 247, 0)),
    linear-gradient(180deg, rgba(255, 252, 247, 0.95), rgba(244, 236, 226, 0.98));
}

[data-theme="light"] .setup-card:nth-child(1) {
  background:
    linear-gradient(135deg, rgba(211, 227, 248, 0.28), rgba(255, 252, 247, 0)),
    linear-gradient(180deg, rgba(255, 252, 247, 0.95), rgba(244, 236, 226, 0.98));
}

[data-theme="light"] .setup-card:nth-child(2) {
  background:
    linear-gradient(135deg, rgba(235, 224, 196, 0.3), rgba(255, 252, 247, 0)),
    linear-gradient(180deg, rgba(255, 252, 247, 0.95), rgba(244, 236, 226, 0.98));
}

[data-theme="light"] .setup-card:nth-child(3) {
  background:
    linear-gradient(135deg, rgba(214, 234, 223, 0.28), rgba(255, 252, 247, 0)),
    linear-gradient(180deg, rgba(255, 252, 247, 0.95), rgba(244, 236, 226, 0.98));
}

[data-theme="light"] .tip-card,
[data-theme="light"] .checklist,
[data-theme="light"] .notes,
[data-theme="light"] .footer-card {
  background:
    linear-gradient(135deg, rgba(246, 235, 214, 0.26), rgba(255, 252, 247, 0)),
    linear-gradient(180deg, rgba(255, 252, 247, 0.95), rgba(244, 236, 226, 0.98));
}

@media (max-width: 1100px) {
  .hero,
  .overview,
  .openrouter-layout {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 900px) {
  .program-grid,
  .setup-grid,
  .overview-grid,
  .pulse-card {
    grid-template-columns: 1fr;
  }

  .topbar {
    position: static;
    border-radius: 24px;
  }

  .topbar,
  .menu {
    justify-content: center;
  }
}

@media (max-width: 640px) {
  .shell {
    width: min(100% - 24px, 1180px);
  }

  .hero {
    padding-top: 28px;
  }

  .hero-copy,
  .glass-card,
  .overview-card,
  .feature-card,
  .program-card,
  .download-card,
  .setup-card,
  .tip-card,
  .footer-card {
    padding: 20px;
    border-radius: 22px;
  }

  .downloads-grid {
    grid-template-columns: 1fr;
  }

  .menu {
    gap: 10px 14px;
  }
}