@import url("https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600;700&family=Fira+Sans:wght@300;400;500;600;700&display=swap");

:root {
  --color-ink: #f5f7fb;
  --color-muted: #b7bfd6;
  --color-panel: rgba(13, 20, 37, 0.72);
  --color-panel-strong: rgba(12, 19, 35, 0.92);
  --color-border: rgba(178, 197, 255, 0.14);
  --color-line: rgba(255, 255, 255, 0.08);
  --color-track-a: #68d8c8;
  --color-track-b: #f4bf5a;
  --color-track-c: #6ea4ff;
  --color-accent: #f4bf5a;
  --color-accent-strong: #ff8b49;
  --color-bg: #060b16;
  --shadow-soft: 0 26px 60px rgba(2, 7, 18, 0.34);
  --shadow-card: 0 18px 40px rgba(5, 12, 26, 0.22);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --content-width: min(1180px, calc(100vw - 32px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Fira Sans", sans-serif;
  color: var(--color-ink);
  background:
    radial-gradient(circle at 12% 12%, rgba(110, 164, 255, 0.18), transparent 34%),
    radial-gradient(circle at 88% 18%, rgba(244, 191, 90, 0.16), transparent 34%),
    radial-gradient(circle at 50% 78%, rgba(104, 216, 200, 0.12), transparent 26%),
    linear-gradient(180deg, #030712 0%, #08101f 46%, #040814 100%);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.8), transparent 85%);
  opacity: 0.35;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

.page-shell {
  position: relative;
  z-index: 1;
}

.topbar {
  width: var(--content-width);
  margin: 18px auto 0;
  padding: 14px 18px;
  position: sticky;
  top: 14px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  backdrop-filter: blur(18px);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: rgba(6, 11, 22, 0.72);
  box-shadow: var(--shadow-soft);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-track-c));
  box-shadow: 0 0 22px rgba(110, 164, 255, 0.55);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1;
}

.brand-text strong {
  font-family: "Fira Code", monospace;
  font-size: 0.98rem;
}

.brand-text span:last-child {
  font-size: 0.74rem;
  color: var(--color-muted);
}

.topnav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.topnav a {
  color: var(--color-muted);
  font-size: 0.92rem;
  transition: color 180ms ease;
}

.topnav a:hover,
.topnav a.is-current {
  color: var(--color-ink);
}

main {
  width: var(--content-width);
  margin: 0 auto;
  padding: 46px 0 80px;
}

.hero,
.section {
  margin-top: 34px;
}

.hero {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr;
  gap: 24px;
  align-items: stretch;
}

.hero-copy,
.hero-panel,
.info-card,
.track-card,
.decision-card,
.stack-card,
.combo-card,
.architecture-card,
.roadmap-step,
.deploy-card,
.terminal-card,
.callout {
  border: 1px solid var(--color-border);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02)),
    var(--color-panel);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
}

.hero-copy {
  padding: 42px 38px 34px;
  min-height: 520px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  position: relative;
}

.hero-copy::after {
  content: "";
  position: absolute;
  width: 340px;
  height: 340px;
  right: -90px;
  top: -80px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(110, 164, 255, 0.34), transparent 70%);
  filter: blur(8px);
  pointer-events: none;
}

.hero h1,
.section h2,
.panel-card h2,
.track-card h3,
.decision-card h3,
.stack-card h3,
.combo-card h3,
.architecture-card h3,
.callout h3 {
  font-family: "Fira Code", monospace;
  letter-spacing: -0.02em;
}

.hero h1 {
  font-size: clamp(2.5rem, 4vw, 4.3rem);
  line-height: 0.94;
  max-width: 10ch;
  margin: 16px 0 18px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  color: var(--color-track-a);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.hero-summary,
.section-heading p,
.track-head p,
.decision-card p,
.stack-card p,
.combo-card p,
.architecture-card p,
.callout p,
.deploy-card li,
.panel-card p,
.roadmap-step p {
  color: var(--color-muted);
  line-height: 1.74;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease;
  cursor: pointer;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  color: #06111f;
  background: linear-gradient(135deg, var(--color-accent), #ffdfa0);
}

.button-secondary {
  color: var(--color-ink);
  border-color: var(--color-border);
  background: rgba(255, 255, 255, 0.04);
}

.hero-note {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-note span {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  border-radius: 999px;
  color: var(--color-ink);
  border: 1px solid var(--color-line);
  background: rgba(255, 255, 255, 0.05);
}

.hero-panel {
  padding: 22px;
}

.panel-label {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.panel-card {
  border: 1px solid rgba(244, 191, 90, 0.24);
  border-radius: 24px;
  padding: 24px;
  background:
    linear-gradient(180deg, rgba(244, 191, 90, 0.12), rgba(244, 191, 90, 0.03)),
    rgba(6, 11, 22, 0.62);
  min-height: calc(100% - 18px);
}

.glow-card {
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.05),
    0 20px 50px rgba(244, 191, 90, 0.12);
}

.signal-list {
  padding-left: 18px;
  margin: 18px 0 0;
  color: var(--color-ink);
  line-height: 1.75;
}

.section {
  padding: 0;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 18px;
}

.section-heading h2 {
  font-size: clamp(1.9rem, 2.6vw, 2.9rem);
  margin: 10px 0 12px;
}

.requirement-grid,
.track-grid,
.decision-grid,
.stack-grid,
.combo-board,
.architecture-grid,
.deploy-grid {
  display: grid;
  gap: 18px;
}

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

.info-card,
.track-card,
.decision-card,
.stack-card,
.combo-card,
.architecture-card,
.roadmap-step,
.deploy-card,
.terminal-card,
.callout {
  padding: 24px;
}

.info-card h3,
.track-card h3,
.decision-card h3,
.stack-card h3,
.combo-card h3,
.architecture-card h3,
.roadmap-step h3,
.deploy-card h3,
.callout h3 {
  margin: 0 0 12px;
  font-size: 1.18rem;
}

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

.track-card {
  position: relative;
  overflow: hidden;
}

.track-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0), var(--track-color), rgba(255, 255, 255, 0));
}

[data-track="a"] {
  --track-color: var(--color-track-a);
}

[data-track="b"] {
  --track-color: var(--color-track-b);
}

[data-track="c"] {
  --track-color: var(--color-track-c);
}

.track-card-recommended {
  background:
    linear-gradient(180deg, rgba(110, 164, 255, 0.12), rgba(110, 164, 255, 0.04)),
    var(--color-panel-strong);
}

.track-head {
  margin-bottom: 18px;
}

.track-tag,
.arch-badge {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid var(--color-line);
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-ink);
  font-size: 0.78rem;
}

.track-points,
.architecture-card ul,
.deploy-card ol {
  margin: 0;
  padding-left: 18px;
  line-height: 1.74;
}

.score-stack {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 20px;
}

.score-stack div {
  padding: 14px;
  border: 1px solid var(--color-line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
}

.score-stack span {
  display: block;
  color: var(--color-muted);
  margin-bottom: 6px;
}

.focus-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 10px 0 20px;
}

.focus-button {
  min-height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--color-line);
  color: var(--color-muted);
  background: rgba(255, 255, 255, 0.03);
  cursor: pointer;
  transition:
    color 180ms ease,
    transform 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease;
}

.focus-button:hover,
.focus-button.is-active {
  color: var(--color-ink);
  transform: translateY(-1px);
  border-color: rgba(244, 191, 90, 0.34);
  background: rgba(244, 191, 90, 0.12);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: rgba(7, 12, 24, 0.78);
  box-shadow: var(--shadow-card);
}

.comparison-table table {
  width: 100%;
  border-collapse: collapse;
  min-width: 920px;
}

.comparison-table th,
.comparison-table td {
  padding: 18px 20px;
  vertical-align: top;
  border-bottom: 1px solid var(--color-line);
}

.comparison-table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  text-align: left;
  background: rgba(8, 14, 28, 0.95);
  backdrop-filter: blur(14px);
}

.comparison-table tbody tr:nth-child(odd) td,
.comparison-table tbody tr:nth-child(odd) th {
  background: rgba(255, 255, 255, 0.02);
}

.comparison-table tbody tr:hover td,
.comparison-table tbody tr:hover th {
  background: rgba(255, 255, 255, 0.05);
}

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

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

.stack-card span,
.combo-card p strong {
  color: var(--color-ink);
}

.combo-board {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 18px;
}

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

.callout {
  margin-top: 18px;
  background:
    linear-gradient(180deg, rgba(104, 216, 200, 0.1), rgba(104, 216, 200, 0.03)),
    var(--color-panel-strong);
}

.roadmap {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.roadmap-step span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  margin-bottom: 20px;
  font-family: "Fira Code", monospace;
  background: linear-gradient(135deg, rgba(244, 191, 90, 0.18), rgba(110, 164, 255, 0.16));
  border: 1px solid var(--color-line);
}

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

.terminal-card {
  margin-top: 18px;
  overflow: hidden;
  padding: 0;
}

.terminal-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--color-line);
  background: rgba(255, 255, 255, 0.04);
}

.terminal-head span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
}

.terminal-card pre {
  margin: 0;
  padding: 22px 24px 28px;
  overflow-x: auto;
  color: #dce7ff;
  font-size: 0.96rem;
  line-height: 1.75;
}

.terminal-card code {
  font-family: "Fira Code", monospace;
}

[data-focus="a"] [data-track]:not([data-track="a"]),
[data-focus="b"] [data-track]:not([data-track="b"]),
[data-focus="c"] [data-track]:not([data-track="c"]) {
  opacity: 0.42;
  transform: scale(0.985);
}

[data-focus="a"] [data-track="a"],
[data-focus="b"] [data-track="b"],
[data-focus="c"] [data-track="c"] {
  opacity: 1;
  transform: scale(1);
}

[data-track] {
  transition:
    opacity 180ms ease,
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 480ms ease,
    transform 480ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  .hero,
  .track-grid,
  .decision-grid,
  .stack-grid,
  .combo-board,
  .architecture-grid,
  .roadmap,
  .requirement-grid,
  .deploy-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    min-height: auto;
  }

  .topbar {
    border-radius: 28px;
    align-items: flex-start;
    flex-direction: column;
  }

  .topnav {
    gap: 12px;
  }
}

@media (max-width: 720px) {
  :root {
    --content-width: min(100vw - 20px, 100vw - 20px);
  }

  .topbar {
    top: 8px;
    margin-top: 10px;
    padding: 14px;
  }

  main {
    padding-top: 28px;
  }

  .hero-copy,
  .hero-panel,
  .info-card,
  .track-card,
  .decision-card,
  .stack-card,
  .combo-card,
  .architecture-card,
  .roadmap-step,
  .deploy-card,
  .callout {
    padding: 20px;
  }

  .hero h1 {
    max-width: 12ch;
  }

  .score-stack {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }

  .reveal,
  .reveal.is-visible {
    opacity: 1;
    transform: none;
  }
}