/* ==========================================================================
   SYDREK — Brand Direction Explorations
   Global shell + 5 scoped concept themes
   ========================================================================== */

:root {
  --bg: #09090b;
  --fg: #f5f5f7;
  --muted: #9a9aa5;
  --line: rgba(255, 255, 255, 0.08);
  --nav-accent: #2563ff;
  --container: 1180px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

img,
svg {
  display: block;
}

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

button {
  font: inherit;
  cursor: pointer;
}

.container {
  width: min(var(--container), calc(100% - 48px));
  margin-inline: auto;
}

.mono {
  font-family: "JetBrains Mono", "IBM Plex Mono", ui-monospace, monospace;
}

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 64px;
  padding-inline: 24px;
  background: rgba(9, 9, 11, 0.72);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid var(--line);
  transition: --nav-accent 0.4s;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.nav-brand span:last-child {
  color: var(--muted);
  font-weight: 500;
}

.nav-dot {
  width: 12px;
  height: 12px;
  border-radius: 4px;
  background: var(--nav-accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--nav-accent) 25%, transparent);
  transition: background 0.5s var(--ease), box-shadow 0.5s var(--ease);
}

.nav-links {
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-links a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  transition: background 0.2s, color 0.2s;
}

.nav-links a i {
  font-style: normal;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  opacity: 0.6;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--fg);
  background: rgba(255, 255, 255, 0.06);
}

.nav-links a.active i {
  color: var(--nav-accent);
  opacity: 1;
}

.nav-cta {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  background: var(--nav-accent);
  color: #fff;
  transition: background 0.5s var(--ease), transform 0.2s;
}

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

/* --------------------------------------------------------------------------
   Intro hero
   -------------------------------------------------------------------------- */

.hero {
  position: relative;
  padding: 160px 0 96px;
  overflow: hidden;
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60% 50% at 10% 10%, rgba(37, 99, 255, 0.35), transparent 60%),
    radial-gradient(50% 50% at 90% 20%, rgba(255, 94, 31, 0.3), transparent 60%),
    radial-gradient(40% 40% at 70% 90%, rgba(139, 92, 246, 0.3), transparent 60%),
    radial-gradient(40% 40% at 20% 85%, rgba(16, 185, 129, 0.25), transparent 60%),
    #09090b;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 24px;
  padding: 6px 12px 6px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2563ff, #ff5e1f, #8b5cf6, #10b981);
}

.hero h1 {
  margin: 0 0 24px;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(44px, 7vw, 96px);
  line-height: 0.98;
  letter-spacing: -0.04em;
  font-weight: 700;
  max-width: 14ch;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(90deg, #2563ff, #22d3ee 30%, #ff5e1f 55%, #f472b6 75%, #10b981);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  max-width: 62ch;
  margin: 0 0 48px;
  font-size: 18px;
  color: var(--muted);
}

.hero-chips {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.hero-chip {
  position: relative;
  display: grid;
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
  transition: transform 0.4s var(--ease), border-color 0.3s, background 0.3s;
}

.hero-chip:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.05);
}

.hero-chip-grad {
  height: 56px;
  border-radius: 10px;
}

.hero-chip b {
  display: block;
  font-size: 14px;
  letter-spacing: -0.01em;
}

.hero-chip small {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  color: var(--muted);
}

.hero-chip i {
  position: absolute;
  top: 12px;
  right: 14px;
  font-style: normal;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   Concept section shell
   -------------------------------------------------------------------------- */

.concept {
  --c-bg: #0b0b0d;
  --c-surface: #141418;
  --c-surface-2: #1b1b21;
  --c-text: #f3f3f6;
  --c-muted: #8c8c99;
  --c-primary: #2563ff;
  --c-accent: #22d3ee;
  --c-border: rgba(255, 255, 255, 0.1);
  --c-display: "Space Grotesk", sans-serif;
  --c-body: "Inter", sans-serif;
  --c-mono: "JetBrains Mono", monospace;
  --c-radius: 14px;
  --c-shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6);

  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--c-body);
}

.concept h1,
.concept h2,
.concept h3,
.concept h4 {
  font-family: var(--c-display);
  margin: 0;
}

.concept-body {
  padding: 72px 0 112px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 88px;
}

/* Prevent nested grids from inflating their parent tracks */
.concept-body > *,
.block > *,
.ui-grid > *,
.type-grid > *,
.icon-layout > *,
.concept-intro > *,
.q-metrics > *,
.s-stats > *,
.v-tiers > *,
.swatches > *,
.gradients > *,
.icon-grid > * {
  min-width: 0;
}

/* ---- Full-width cover (Facebook cover ratio 820 × 312) ------------------ */

.cover {
  position: relative;
  width: 100%;
  aspect-ratio: 820 / 312;
  min-height: 320px;
  overflow: hidden;
  isolation: isolate;
  display: flex;
  align-items: flex-end;
}

.cover-content {
  position: relative;
  z-index: 2;
  width: min(var(--container), calc(100% - 48px));
  margin-inline: auto;
  padding-bottom: clamp(28px, 4vw, 56px);
  display: grid;
  gap: 14px;
}

.cover-mark {
  width: clamp(44px, 5vw, 64px);
  height: clamp(44px, 5vw, 64px);
}

.cover-mark svg {
  width: 100%;
  height: 100%;
}

.cover-word {
  font-family: var(--c-display);
  font-size: clamp(48px, 9vw, 128px);
  line-height: 0.9;
  letter-spacing: -0.045em;
  font-weight: 700;
}

.cover-tag {
  margin: 0;
  font-size: clamp(14px, 1.4vw, 20px);
  max-width: 48ch;
  opacity: 0.85;
}

.cover-meta {
  position: absolute;
  z-index: 3;
  top: 20px;
  left: 24px;
  right: 24px;
  display: flex;
  justify-content: space-between;
  font-family: var(--c-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.7;
}

.cover-art {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

/* ---- Blocks -------------------------------------------------------------- */

.block {
  display: grid;
  gap: 32px;
}

.block-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--c-border);
}

.block-index {
  display: block;
  margin-bottom: 10px;
  font-family: var(--c-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-primary);
}

.block-head h3 {
  font-size: clamp(26px, 3vw, 36px);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.block-head p {
  margin: 0;
  max-width: 44ch;
  color: var(--c-muted);
  font-size: 15px;
}

/* ---- Concept intro ------------------------------------------------------- */

.concept-intro {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  align-items: start;
}

.concept-intro .kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  font-family: var(--c-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-primary);
}

.concept-intro .kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: currentColor;
}

.concept-intro h2 {
  font-size: clamp(36px, 5vw, 64px);
  letter-spacing: -0.035em;
  line-height: 1;
  margin-bottom: 24px;
}

.concept-intro .idea {
  margin: 0 0 24px;
  font-size: 18px;
  line-height: 1.6;
  color: var(--c-muted);
  max-width: 58ch;
}

.concept-intro .idea strong {
  color: var(--c-text);
  font-weight: 600;
}

.moods {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mood {
  padding: 6px 12px;
  border: 1px solid var(--c-border);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
}

.logo-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.logo-tile {
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: var(--c-radius);
  border: 1px solid var(--c-border);
  position: relative;
  overflow: hidden;
}

.logo-tile svg {
  width: 48%;
  height: 48%;
}

.logo-tile .label {
  position: absolute;
  bottom: 10px;
  left: 12px;
  font-family: var(--c-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.6;
}

.logo-wide {
  grid-column: 1 / -1;
  aspect-ratio: auto;
  padding: 28px;
  display: flex;
  align-items: center;
  gap: 18px;
  justify-content: flex-start;
}

.logo-wide svg {
  width: 48px;
  height: 48px;
}

.logo-wide .wordmark {
  font-family: var(--c-display);
  font-size: 36px;
  letter-spacing: -0.04em;
  font-weight: 700;
}

.logo-wide .wordmark small {
  display: block;
  font-family: var(--c-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 400;
  opacity: 0.6;
  margin-top: 4px;
}

/* ---- Palette ------------------------------------------------------------- */

.swatches {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}

.swatch {
  position: relative;
  min-height: 170px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  border-radius: var(--c-radius);
  border: 1px solid var(--c-border);
  cursor: copy;
  transition: transform 0.4s var(--ease);
}

.swatch:hover {
  transform: translateY(-4px);
}

.swatch[data-ink="light"] {
  color: #fff;
}

.swatch[data-ink="dark"] {
  color: #111;
}

.swatch b {
  display: block;
  font-size: 14px;
  font-weight: 600;
}

.swatch code {
  display: block;
  font-family: var(--c-mono);
  font-size: 12px;
  opacity: 0.8;
  margin-top: 2px;
}

.swatch small {
  display: block;
  margin-top: 8px;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  opacity: 0.7;
}

.swatch .pct {
  position: absolute;
  top: 12px;
  right: 14px;
  font-family: var(--c-mono);
  font-size: 11px;
  opacity: 0.7;
}

.ratio-bar {
  display: flex;
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--c-border);
}

.ratio-bar span {
  display: block;
  height: 100%;
}

.ratio-note {
  display: flex;
  justify-content: space-between;
  font-family: var(--c-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-top: 10px;
}

/* ---- Gradients ----------------------------------------------------------- */

.gradients {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.gradient-card {
  border: 1px solid var(--c-border);
  border-radius: var(--c-radius);
  overflow: hidden;
  cursor: copy;
  background: var(--c-surface);
  transition: transform 0.4s var(--ease);
}

.gradient-card:hover {
  transform: translateY(-4px);
}

.gradient-preview {
  aspect-ratio: 4 / 3;
  position: relative;
}

.gradient-preview::after {
  content: "COPY CSS";
  position: absolute;
  bottom: 10px;
  right: 10px;
  padding: 4px 8px;
  border-radius: 6px;
  font-family: var(--c-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  opacity: 0;
  transition: opacity 0.2s;
}

.gradient-card:hover .gradient-preview::after {
  opacity: 1;
}

.gradient-meta {
  padding: 14px 16px 16px;
}

.gradient-meta b {
  display: block;
  font-size: 14px;
  font-weight: 600;
}

.gradient-meta span {
  display: block;
  font-size: 12px;
  color: var(--c-muted);
  margin: 2px 0 8px;
}

.gradient-meta code {
  display: block;
  font-family: var(--c-mono);
  font-size: 10.5px;
  line-height: 1.5;
  color: var(--c-muted);
  word-break: break-all;
  max-height: 48px;
  overflow: hidden;
  mask-image: linear-gradient(black 60%, transparent);
}

/* ---- Typography ---------------------------------------------------------- */

.type-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 16px;
}

.type-card {
  padding: 32px;
  border: 1px solid var(--c-border);
  border-radius: var(--c-radius);
  background: var(--c-surface);
  display: grid;
  gap: 20px;
  align-content: start;
}

.type-role {
  display: flex;
  justify-content: space-between;
  font-family: var(--c-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.type-aa {
  font-family: var(--c-display);
  font-size: clamp(96px, 12vw, 160px);
  line-height: 0.85;
  letter-spacing: -0.05em;
  font-weight: 700;
}

.type-sample {
  font-family: var(--c-display);
  font-size: 32px;
  letter-spacing: -0.03em;
  line-height: 1.1;
  font-weight: 700;
}

.type-glyphs {
  font-family: var(--c-display);
  font-size: 18px;
  letter-spacing: 0.02em;
  color: var(--c-muted);
  line-height: 1.6;
  word-break: break-all;
}

.type-body-sample {
  font-size: 16px;
  line-height: 1.65;
  color: var(--c-text);
  margin: 0;
}

.type-scale {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.type-scale li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--c-border);
}

.type-scale li span:first-child {
  font-family: var(--c-display);
}

.type-scale li code {
  font-family: var(--c-mono);
  font-size: 11px;
  color: var(--c-muted);
}

.type-pairs {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.pair {
  padding: 20px;
  border: 1px solid var(--c-border);
  border-radius: var(--c-radius);
}

.pair .type-role {
  margin-bottom: 12px;
}

.pair b {
  display: block;
  font-size: 22px;
  font-weight: 600;
}

.pair p {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--c-muted);
}

/* ---- Iconography --------------------------------------------------------- */

.icon-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 16px;
}

.icon-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.icon-cell {
  padding: 28px 12px 22px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 16px;
  border: 1px solid var(--c-border);
  border-radius: var(--c-radius);
  background: var(--c-surface);
  transition: transform 0.4s var(--ease), background 0.3s;
}

.icon-cell:hover {
  transform: translateY(-3px);
  background: var(--c-surface-2);
}

.icon-cell svg {
  width: 48px;
  height: 48px;
}

.icon-cell span {
  font-family: var(--c-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.icon-spec {
  padding: 24px;
  border: 1px solid var(--c-border);
  border-radius: var(--c-radius);
  background: var(--c-surface);
  display: grid;
  gap: 16px;
  align-content: start;
}

.icon-spec h4 {
  font-size: 20px;
  letter-spacing: -0.02em;
}

.icon-spec dl {
  margin: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px 16px;
  font-size: 13px;
}

.icon-spec dt {
  font-family: var(--c-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-muted);
  padding-top: 2px;
}

.icon-spec dd {
  margin: 0;
}

.icon-spec p {
  margin: 0;
  font-size: 13px;
  color: var(--c-muted);
  line-height: 1.6;
}

.icon-preview-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px;
  border-radius: 10px;
  background: var(--c-surface-2);
}

.icon-preview-row svg {
  width: 20px;
  height: 20px;
}

.icon-preview-row span {
  font-size: 13px;
  font-weight: 500;
}

.icon-preview-row .pill {
  margin-left: auto;
  white-space: nowrap;
  flex: none;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-family: var(--c-mono);
  background: var(--c-primary);
  color: #fff;
}

/* ---- UI stage ------------------------------------------------------------ */

.ui-stage {
  border: 1px solid var(--c-border);
  border-radius: calc(var(--c-radius) + 6px);
  padding: 20px;
  background: var(--c-surface);
  overflow: hidden;
  position: relative;
}

.ui-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}

.ui-card {
  border: 1px solid var(--c-border);
  border-radius: var(--c-radius);
  padding: 20px;
  background: var(--c-surface-2);
}

.ui-label {
  font-family: var(--c-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-bottom: 14px;
}

.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-12 { grid-column: span 12; }

/* Shared primitive controls (themed by concept vars) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 14px;
  font-family: var(--c-body);
  transition: transform 0.2s, box-shadow 0.2s;
}

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

.btn-primary {
  background: var(--c-primary);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--c-text);
  border-color: var(--c-border);
}

.btn-soft {
  background: color-mix(in srgb, var(--c-primary) 14%, transparent);
  color: var(--c-primary);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.input {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  color: var(--c-muted);
  font-size: 14px;
}

.input svg {
  width: 16px;
  height: 16px;
}

.toggle {
  width: 44px;
  height: 24px;
  border-radius: 999px;
  background: var(--c-primary);
  position: relative;
  display: inline-block;
}

.toggle::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 23px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
}

.toggle.off {
  background: var(--c-border);
}

.toggle.off::after {
  left: 3px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.avatar-group {
  display: flex;
}

.avatar-group span {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--c-surface-2);
  margin-left: -8px;
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
}

.avatar-group span:first-child {
  margin-left: 0;
}

.metric {
  display: grid;
  gap: 4px;
}

.metric .value {
  font-family: var(--c-display);
  font-size: 34px;
  letter-spacing: -0.03em;
  font-weight: 700;
  line-height: 1;
}

.metric .delta {
  font-size: 12px;
  font-weight: 600;
}

.metric .name {
  font-size: 12px;
  color: var(--c-muted);
}

.progress {
  height: 8px;
  border-radius: 999px;
  background: var(--c-border);
  overflow: hidden;
}

.progress span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--c-primary);
}

.list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
}

.list li svg {
  width: 18px;
  height: 18px;
  flex: none;
}

.list li .meta {
  margin-left: auto;
  font-family: var(--c-mono);
  font-size: 11px;
  color: var(--c-muted);
}

/* ==========================================================================
   CONCEPT 01 — QUANTUM CORE
   ========================================================================== */

.c-quantum {
  --c-bg: #070b1a;
  --c-surface: #0c1227;
  --c-surface-2: #111936;
  --c-text: #e6f0ff;
  --c-muted: #8a94b8;
  --c-primary: #2563ff;
  --c-accent: #22d3ee;
  --c-border: rgba(138, 148, 184, 0.18);
  --c-display: "Space Grotesk", sans-serif;
  --c-body: "Inter", sans-serif;
  --c-mono: "JetBrains Mono", monospace;
  --c-radius: 12px;
}

.cover-quantum {
  background:
    radial-gradient(60% 80% at 75% 20%, rgba(37, 99, 255, 0.45), transparent 60%),
    radial-gradient(40% 60% at 90% 90%, rgba(34, 211, 238, 0.35), transparent 60%),
    linear-gradient(180deg, #0f1b3d 0%, #070b1a 100%);
  color: #e6f0ff;
}

.cover-quantum .cover-art::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(138, 148, 184, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(138, 148, 184, 0.12) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(90deg, transparent, black 40%, black);
}

.cover-quantum .rings {
  position: absolute;
  right: 6%;
  top: 50%;
  width: 46%;
  max-width: 560px;
  transform: translateY(-50%);
  opacity: 0.9;
}

.cover-quantum .cover-word {
  background: linear-gradient(90deg, #e6f0ff 30%, #22d3ee);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.cover-quantum .scan {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(34, 211, 238, 0.08) 50%, transparent 100%);
  background-size: 100% 200%;
  animation: scan 7s linear infinite;
}

@keyframes scan {
  from { background-position: 0 -100%; }
  to { background-position: 0 100%; }
}

.c-quantum .glow {
  box-shadow: 0 0 0 1px rgba(37, 99, 255, 0.4), 0 10px 40px -10px rgba(37, 99, 255, 0.7);
}

.c-quantum .btn-primary {
  background: linear-gradient(135deg, #2563ff, #22d3ee);
  box-shadow: 0 8px 24px -8px rgba(37, 99, 255, 0.8);
}

.q-sidebar {
  display: grid;
  gap: 6px;
  align-content: start;
}

.q-sidebar a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 8px;
  font-size: 13px;
  color: var(--c-muted);
}

.q-sidebar a svg {
  width: 16px;
  height: 16px;
}

.q-sidebar a.active {
  background: rgba(37, 99, 255, 0.16);
  color: #e6f0ff;
  box-shadow: inset 2px 0 0 var(--c-accent);
}

.q-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.q-metric {
  padding: 16px;
  border-radius: 10px;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
}

.q-metric svg {
  width: 100%;
  height: 32px;
  margin-top: 10px;
}

.q-chart {
  margin-top: 16px;
  padding: 16px;
  border-radius: 10px;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
}

.q-chart svg {
  width: 100%;
  height: 140px;
}

.q-terminal {
  font-family: var(--c-mono);
  font-size: 12px;
  line-height: 1.7;
  padding: 16px;
  border-radius: 10px;
  background: #050816;
  border: 1px solid var(--c-border);
  color: #8a94b8;
}

.q-terminal b {
  color: #22d3ee;
  font-weight: 500;
}

.q-terminal i {
  color: #2563ff;
  font-style: normal;
}

.q-terminal .ok {
  color: #34d399;
}

.q-tabs {
  display: inline-flex;
  padding: 4px;
  border-radius: 10px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  gap: 2px;
}

.q-tabs span {
  padding: 6px 12px;
  border-radius: 7px;
  font-size: 13px;
  color: var(--c-muted);
}

.q-tabs span.on {
  background: var(--c-surface-2);
  color: var(--c-text);
  box-shadow: 0 0 0 1px rgba(37, 99, 255, 0.5);
}

/* ==========================================================================
   CONCEPT 02 — SOLAR FORGE
   ========================================================================== */

.c-solar {
  --c-bg: #fff6ec;
  --c-surface: #ffffff;
  --c-surface-2: #fff0e0;
  --c-text: #1a1412;
  --c-muted: #6b5e58;
  --c-primary: #ff5e1f;
  --c-accent: #ffb930;
  --c-border: rgba(26, 20, 18, 0.1);
  --c-display: "Syne", sans-serif;
  --c-body: "DM Sans", sans-serif;
  --c-mono: "JetBrains Mono", monospace;
  --c-radius: 20px;
}

.c-solar .block-head h3,
.c-solar .concept-intro h2,
.c-solar .type-aa,
.c-solar .type-sample {
  font-weight: 800;
}

.cover-solar {
  background: #fff6ec;
  color: #1a1412;
}

.cover-solar .sun {
  position: absolute;
  right: -8%;
  top: 50%;
  width: 62%;
  max-width: 820px;
  aspect-ratio: 1;
  transform: translateY(-50%);
  border-radius: 50%;
  background: conic-gradient(from 180deg at 50% 50%, #ffb930, #ff5e1f, #ff2e88, #ffb930);
  filter: blur(0.5px);
}

.cover-solar .sun::after {
  content: "";
  position: absolute;
  inset: 14%;
  border-radius: 50%;
  background: #fff6ec;
  opacity: 0.08;
}

.cover-solar .stripes {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 32%;
  background: repeating-linear-gradient(90deg, rgba(26, 20, 18, 0.06) 0 2px, transparent 2px 28px);
  mask-image: linear-gradient(180deg, transparent, black);
}

.cover-solar .cover-word {
  font-weight: 800;
  text-transform: lowercase;
  letter-spacing: -0.06em;
}

.cover-solar .cover-word::after {
  content: ".";
  background: linear-gradient(135deg, #ffb930, #ff5e1f, #ff2e88);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.c-solar .btn-primary {
  background: linear-gradient(135deg, #ffb930, #ff5e1f 55%, #ff2e88);
  border-radius: 999px;
  box-shadow: 0 10px 24px -10px rgba(255, 94, 31, 0.7);
}

.c-solar .btn {
  border-radius: 999px;
}

.c-solar .btn-ghost {
  border-color: #1a1412;
  border-width: 2px;
}

.c-solar .ui-card {
  box-shadow: 0 1px 2px rgba(26, 20, 18, 0.04), 0 12px 32px -16px rgba(255, 94, 31, 0.25);
}

.s-hero {
  display: grid;
  gap: 18px;
  padding: 32px;
  background: linear-gradient(135deg, #fff6ec, #ffe1c9);
}

.s-hero .s-chip {
  justify-self: start;
}

.s-hero h4 {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.98;
}

.s-hero h4 em {
  font-style: normal;
  background: linear-gradient(135deg, #ff5e1f, #ff2e88);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.s-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.s-stat {
  padding: 18px;
  border-radius: 16px;
  background: #1a1412;
  color: #fff6ec;
}

.s-stat .value {
  font-family: var(--c-display);
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
}

.s-stat .name {
  font-size: 12px;
  opacity: 0.6;
  margin-top: 6px;
}

.s-pricing {
  position: relative;
  padding: 2px;
  border-radius: 22px;
  background: linear-gradient(135deg, #ffb930, #ff5e1f, #ff2e88);
}

.s-pricing-inner {
  border-radius: 20px;
  background: #fff;
  padding: 24px;
  display: grid;
  gap: 14px;
}

.s-pricing .price {
  font-family: var(--c-display);
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1;
}

.s-pricing .price small {
  font-size: 14px;
  font-family: var(--c-body);
  color: var(--c-muted);
  font-weight: 500;
}

.s-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  background: #fff0e0;
  color: #ff5e1f;
  font-weight: 600;
  font-size: 12px;
}

.s-chip svg {
  width: 14px;
  height: 14px;
}

.s-toast {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 16px;
  background: #1a1412;
  color: #fff6ec;
}

.s-toast .icon {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #ffb930, #ff5e1f);
}

.s-toast .icon svg {
  width: 18px;
  height: 18px;
}

.s-toast b {
  display: block;
  font-size: 14px;
}

.s-toast span {
  font-size: 12px;
  opacity: 0.6;
}

/* ==========================================================================
   CONCEPT 03 — AURORA GLASS
   ========================================================================== */

.c-aurora {
  --c-bg: #0b0e1f;
  --c-surface: rgba(255, 255, 255, 0.05);
  --c-surface-2: rgba(255, 255, 255, 0.08);
  --c-text: #f5f3ff;
  --c-muted: #a5a3c2;
  --c-primary: #8b5cf6;
  --c-accent: #2dd4bf;
  --c-border: rgba(255, 255, 255, 0.12);
  --c-display: "Outfit", sans-serif;
  --c-body: "Manrope", sans-serif;
  --c-mono: "JetBrains Mono", monospace;
  --c-radius: 18px;
  position: relative;
  isolation: isolate;
}

.c-aurora::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(40% 30% at 15% 30%, rgba(139, 92, 246, 0.25), transparent 70%),
    radial-gradient(35% 30% at 85% 60%, rgba(45, 212, 191, 0.18), transparent 70%),
    radial-gradient(30% 25% at 50% 90%, rgba(244, 114, 182, 0.15), transparent 70%);
  pointer-events: none;
}

.c-aurora .type-card,
.c-aurora .icon-cell,
.c-aurora .icon-spec,
.c-aurora .ui-stage,
.c-aurora .ui-card,
.c-aurora .gradient-card,
.c-aurora .pair,
.c-aurora .logo-tile {
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12), 0 20px 40px -24px rgba(0, 0, 0, 0.6);
}

.cover-aurora {
  background: #0b0e1f;
  color: #f5f3ff;
  align-items: center;
}

.cover-aurora .blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.85;
  animation: drift 14s ease-in-out infinite alternate;
}

.cover-aurora .blob.b1 { width: 48%; aspect-ratio: 1; left: 5%; top: -40%; background: #8b5cf6; }
.cover-aurora .blob.b2 { width: 42%; aspect-ratio: 1; right: 8%; top: 10%; background: #2dd4bf; animation-delay: -4s; }
.cover-aurora .blob.b3 { width: 34%; aspect-ratio: 1; left: 40%; bottom: -50%; background: #f472b6; animation-delay: -8s; }

@keyframes drift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(5%, 8%) scale(1.1); }
}

.cover-aurora .cover-content {
  padding: 0;
  display: block;
}

.cover-aurora .glass-panel {
  width: min(680px, 100%);
  margin: 0 auto;
  padding: clamp(24px, 3.5vw, 44px) clamp(24px, 4vw, 52px);
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.04));
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.3), 0 30px 80px -30px rgba(0, 0, 0, 0.8);
  display: grid;
  gap: 12px;
  text-align: center;
  justify-items: center;
}

.cover-aurora .cover-word {
  font-size: clamp(44px, 7vw, 96px);
  font-weight: 500;
  letter-spacing: -0.03em;
}

.cover-aurora .cover-word em {
  font-style: normal;
  background: linear-gradient(120deg, #c4b5fd, #ccfbf1);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.c-aurora .btn-primary {
  background: linear-gradient(120deg, #8b5cf6, #2dd4bf);
  box-shadow: 0 10px 30px -10px rgba(139, 92, 246, 0.7);
  border-radius: 14px;
}

.c-aurora .btn {
  border-radius: 14px;
}

.c-aurora .btn-ghost {
  background: rgba(255, 255, 255, 0.06);
}

.a-glow-card {
  position: relative;
  overflow: hidden;
}

.a-glow-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.9), rgba(45, 212, 191, 0.4), transparent 70%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.a-ring {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: conic-gradient(#8b5cf6 0 72%, rgba(255, 255, 255, 0.1) 72% 100%);
  margin-inline: auto;
}

.a-ring span {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: #141833;
  display: grid;
  place-items: center;
  font-family: var(--c-display);
  font-size: 28px;
  font-weight: 500;
}

.a-slider {
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  position: relative;
}

.a-slider::before {
  content: "";
  position: absolute;
  inset: 0 40% 0 0;
  border-radius: inherit;
  background: linear-gradient(90deg, #8b5cf6, #2dd4bf);
}

.a-slider::after {
  content: "";
  position: absolute;
  left: 60%;
  top: 50%;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 5px rgba(139, 92, 246, 0.35);
}

.a-pillnav {
  display: inline-flex;
  gap: 4px;
  padding: 5px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--c-border);
}

.a-pillnav span {
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--c-muted);
}

.a-pillnav span.on {
  background: linear-gradient(120deg, #8b5cf6, #2dd4bf);
  color: #fff;
}

.a-calendar {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  font-size: 12px;
  text-align: center;
}

.a-calendar span {
  padding: 6px 0;
  border-radius: 8px;
  color: var(--c-muted);
}

.a-calendar span.h {
  font-family: var(--c-mono);
  font-size: 10px;
  opacity: 0.6;
}

.a-calendar span.on {
  background: linear-gradient(120deg, #8b5cf6, #2dd4bf);
  color: #fff;
  font-weight: 700;
}

.a-calendar span.dot {
  position: relative;
}

.a-calendar span.dot::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #f472b6;
  transform: translateX(-50%);
}

/* ==========================================================================
   CONCEPT 04 — MONOLITH
   ========================================================================== */

.c-monolith {
  --c-bg: #f4f4f0;
  --c-surface: #ffffff;
  --c-surface-2: #f4f4f0;
  --c-text: #000000;
  --c-muted: #5c5c57;
  --c-primary: #000000;
  --c-accent: #d9ff3d;
  --c-border: #000000;
  --c-display: "Archivo", sans-serif;
  --c-body: "IBM Plex Mono", monospace;
  --c-mono: "IBM Plex Mono", monospace;
  --c-radius: 0px;
}

.c-monolith .block-index,
.c-monolith .concept-intro .kicker {
  color: #000;
}

.c-monolith .block-head h3,
.c-monolith .concept-intro h2,
.c-monolith .type-aa,
.c-monolith .type-sample,
.c-monolith .metric .value {
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.04em;
}

.c-monolith .block-head {
  border-bottom-width: 2px;
}

.c-monolith .swatch,
.c-monolith .gradient-card,
.c-monolith .type-card,
.c-monolith .icon-cell,
.c-monolith .icon-spec,
.c-monolith .ui-stage,
.c-monolith .ui-card,
.c-monolith .pair,
.c-monolith .logo-tile,
.c-monolith .mood,
.c-monolith .input,
.c-monolith .btn-ghost {
  border-width: 2px;
  border-color: #000;
}

.c-monolith .swatch:hover,
.c-monolith .gradient-card:hover,
.c-monolith .icon-cell:hover {
  transform: translate(-3px, -3px);
  box-shadow: 6px 6px 0 #000;
}

.cover-monolith {
  background: #f4f4f0;
  color: #000;
}

.cover-monolith .cover-art::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.08) 1px, transparent 1px);
  background-size: 80px 80px;
}

.cover-monolith .acid-block {
  position: absolute;
  top: 0;
  right: 0;
  width: 28%;
  height: 58%;
  background: #d9ff3d;
  border-left: 3px solid #000;
  border-bottom: 3px solid #000;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  font-family: "IBM Plex Mono", monospace;
  font-size: clamp(10px, 0.9vw, 13px);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  line-height: 1.5;
}

.cover-monolith .acid-block b {
  font-family: "Archivo", sans-serif;
  font-size: clamp(28px, 3.4vw, 48px);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.9;
  text-transform: uppercase;
}

.cover-monolith .cover-content {
  padding-bottom: 0;
  gap: 0;
}

.cover-monolith .cover-word {
  font-size: clamp(64px, 18.5vw, 290px);
  font-weight: 900;
  letter-spacing: -0.06em;
  line-height: 0.78;
  text-transform: uppercase;
  transform: translateY(0.08em);
}

.cover-monolith .cover-tag {
  position: absolute;
  z-index: 3;
  left: 64px;
  top: 46px;
  font-family: "IBM Plex Mono", monospace;
  font-size: clamp(10px, 0.9vw, 13px);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  max-width: 34ch;
  line-height: 1.6;
  text-align: left;
  opacity: 1;
}

.cover-monolith .cover-meta {
  color: #000;
  opacity: 1;
}

.cover-monolith .corner {
  position: absolute;
  width: 24px;
  height: 24px;
  border: 3px solid #000;
}

.cover-monolith .corner.tl { top: 48px; left: 24px; border-right: 0; border-bottom: 0; }
.cover-monolith .corner.bl { bottom: 24px; left: 24px; border-right: 0; border-top: 0; display: none; }
.cover-monolith .corner.br { bottom: 24px; right: 24px; border-left: 0; border-top: 0; }

.c-monolith .btn {
  border-radius: 0;
  border-width: 2px;
  font-family: "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  font-weight: 500;
}

.c-monolith .btn-primary {
  background: #000;
  color: #d9ff3d;
}

.c-monolith .btn-soft {
  background: #d9ff3d;
  color: #000;
  border-color: #000;
}

.c-monolith .btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 #000;
}

.c-monolith .toggle {
  border-radius: 0;
  background: #000;
}

.c-monolith .toggle::after {
  border-radius: 0;
  background: #d9ff3d;
}

.c-monolith .badge {
  border-radius: 0;
  font-family: "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
}

.c-monolith .progress,
.c-monolith .progress span {
  border-radius: 0;
}

.c-monolith .progress {
  background: #fff;
  border: 2px solid #000;
  height: 14px;
}

.c-monolith .progress span {
  background: #d9ff3d;
  box-shadow: inset -2px 0 0 #000;
}

.m-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  font-family: "IBM Plex Mono", monospace;
}

.m-table th,
.m-table td {
  border: 2px solid #000;
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

.m-table th {
  background: #000;
  color: #f4f4f0;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 10px;
}

.m-table td.acid {
  background: #d9ff3d;
  font-weight: 500;
}

.m-table td.num {
  font-family: "Archivo", sans-serif;
  font-weight: 900;
  font-size: 20px;
  letter-spacing: -0.03em;
}

.m-index {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
}

.m-index li {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 2px solid #000;
  font-size: 13px;
}

.m-index li:first-child {
  border-top: 2px solid #000;
}

.m-index li b {
  font-family: "Archivo", sans-serif;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.m-index li span:last-child {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 2px 8px;
  border: 2px solid #000;
}

.m-marquee {
  overflow: hidden;
  background: #000;
  color: #d9ff3d;
  padding: 10px 0;
  font-family: "Archivo", sans-serif;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  font-size: 22px;
  white-space: nowrap;
}

.m-marquee span {
  display: inline-block;
  padding-right: 48px;
  animation: marquee 18s linear infinite;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.m-big {
  font-family: "Archivo", sans-serif;
  font-size: clamp(64px, 8vw, 112px);
  font-weight: 900;
  letter-spacing: -0.06em;
  line-height: 0.85;
}

.m-big small {
  display: block;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 400;
  margin-top: 12px;
}

.m-input {
  border: 0;
  border-bottom: 2px solid #000;
  border-radius: 0;
  background: transparent;
  padding: 10px 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ==========================================================================
   CONCEPT 05 — VERDANT CIRCUIT
   ========================================================================== */

.c-verdant {
  --c-bg: #f3ebdd;
  --c-surface: #faf6ee;
  --c-surface-2: #ffffff;
  --c-text: #0b2e25;
  --c-muted: #6b7a74;
  --c-primary: #10b981;
  --c-accent: #c2703e;
  --c-border: rgba(11, 46, 37, 0.12);
  --c-display: "Fraunces", serif;
  --c-body: "Plus Jakarta Sans", sans-serif;
  --c-mono: "JetBrains Mono", monospace;
  --c-radius: 16px;
}

.c-verdant .block-index,
.c-verdant .concept-intro .kicker {
  color: #c2703e;
}

.c-verdant .block-head h3,
.c-verdant .concept-intro h2,
.c-verdant .type-aa,
.c-verdant .type-sample,
.c-verdant .metric .value,
.c-verdant .cover-word {
  font-weight: 600;
  font-variation-settings: "opsz" 144, "SOFT" 60;
  letter-spacing: -0.02em;
}

.c-verdant .concept-intro h2 em,
.c-verdant .type-sample em {
  font-style: italic;
  font-weight: 400;
  color: #c2703e;
}

.cover-verdant {
  background:
    radial-gradient(50% 70% at 85% 30%, rgba(16, 185, 129, 0.35), transparent 65%),
    #0b2e25;
  color: #f3ebdd;
}

.cover-verdant .topo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.5;
}

.cover-verdant .cover-word {
  font-size: clamp(56px, 10vw, 140px);
  letter-spacing: -0.03em;
}

.cover-verdant .cover-tag {
  margin-top: 12px;
}

.cover-verdant .cover-word i {
  font-style: italic;
  font-weight: 400;
  color: #a7f3d0;
}

.cover-verdant .cover-word::after {
  content: "";
  display: inline-block;
  width: 0.16em;
  height: 0.16em;
  margin-left: 0.08em;
  border-radius: 50%;
  background: #c2703e;
}

.cover-verdant .iso-stack {
  position: absolute;
  right: 6%;
  top: 50%;
  width: 26%;
  max-width: 320px;
  transform: translateY(-50%);
}

.c-verdant .btn-primary {
  background: #0b2e25;
  color: #a7f3d0;
  border-radius: 12px;
}

.c-verdant .btn-soft {
  background: #a7f3d0;
  color: #0b2e25;
}

.c-verdant .btn-ghost {
  border-color: #0b2e25;
  color: #0b2e25;
}

.c-verdant .ui-card {
  box-shadow: 0 1px 2px rgba(11, 46, 37, 0.04), 0 16px 40px -24px rgba(11, 46, 37, 0.25);
}

.v-tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.v-tier {
  padding: 20px;
  border-radius: 16px;
  border: 1px solid var(--c-border);
  background: #fff;
  display: grid;
  gap: 12px;
  align-content: start;
}

.v-tier.featured {
  background: #0b2e25;
  color: #f3ebdd;
  border-color: #0b2e25;
}

.v-tier .tier-name {
  font-family: var(--c-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.7;
}

.v-tier .price {
  font-family: var(--c-display);
  font-size: 40px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1;
  font-variation-settings: "opsz" 144;
}

.v-tier .price small {
  font-size: 13px;
  font-family: var(--c-body);
  font-weight: 500;
  opacity: 0.6;
}

.v-tier ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
  font-size: 13px;
}

.v-tier li::before {
  content: "✓ ";
  color: #10b981;
}

.v-tier.featured li::before {
  color: #a7f3d0;
}

.v-quote {
  font-family: var(--c-display);
  font-size: 24px;
  line-height: 1.3;
  font-style: italic;
  font-weight: 400;
  font-variation-settings: "opsz" 72, "SOFT" 100;
  margin: 0 0 16px;
}

.v-chart svg {
  width: 100%;
  height: 160px;
}

.v-stepper {
  display: flex;
  align-items: center;
  gap: 0;
}

.v-stepper span {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  border: 2px solid #10b981;
  color: #10b981;
  flex: none;
}

.v-stepper span.done {
  background: #10b981;
  color: #fff;
}

.v-stepper span.todo {
  border-color: var(--c-border);
  color: var(--c-muted);
}

.v-stepper i {
  flex: 1;
  height: 2px;
  background: #10b981;
}

.v-stepper i.todo {
  background: var(--c-border);
}

/* --------------------------------------------------------------------------
   At-a-glance comparison
   -------------------------------------------------------------------------- */

.glance {
  padding: 112px 0;
  background: #0a0a0c;
}

.glance h2 {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(36px, 5vw, 64px);
  letter-spacing: -0.035em;
  line-height: 1;
  margin: 0 0 16px;
}

.glance .lede {
  margin-bottom: 48px;
}

.glance-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.glance-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background: #111114;
  display: grid;
  transition: transform 0.4s var(--ease), border-color 0.3s;
}

.glance-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.2);
}

.glance-cover {
  height: 92px;
  display: flex;
  align-items: flex-end;
  padding: 14px;
  font-size: 22px;
  letter-spacing: -0.03em;
  font-weight: 700;
}

.glance-body {
  padding: 18px;
  display: grid;
  gap: 14px;
  font-size: 13px;
}

.glance-body b {
  display: block;
  font-size: 15px;
}

.glance-row {
  display: grid;
  gap: 4px;
}

.glance-row span:first-child {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.glance-dots {
  display: flex;
  gap: 4px;
}

.glance-dots i {
  width: 18px;
  height: 18px;
  border-radius: 6px;
}

.glance-fit {
  color: var(--muted);
  line-height: 1.5;
}

footer {
  padding: 40px 0 56px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

footer .container {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   Toast + reveal
   -------------------------------------------------------------------------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 200;
  transform: translate(-50%, 20px);
  padding: 10px 16px;
  border-radius: 999px;
  background: #fff;
  color: #000;
  font-size: 13px;
  font-weight: 600;
  font-family: "Inter", sans-serif;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.4s var(--ease);
  box-shadow: 0 20px 40px -16px rgba(0, 0, 0, 0.5);
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.9s var(--ease);
}

.reveal.in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .cover-aurora .blob, .cover-quantum .scan, .m-marquee span { animation: none; }
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1080px) {
  .nav-links a span { display: none; }
  .swatches { grid-template-columns: repeat(3, 1fr); }
  .gradients { grid-template-columns: repeat(2, 1fr); }
  .hero-chips { grid-template-columns: repeat(3, 1fr); }
  .glance-grid { grid-template-columns: repeat(2, 1fr); }
  .icon-layout { grid-template-columns: 1fr; }
  .type-pairs { grid-template-columns: 1fr; }
  .span-3, .span-4, .span-5, .span-6, .span-7, .span-8, .span-9 { grid-column: span 6; }
}

@media (max-width: 720px) {
  .nav { padding-inline: 16px; }
  .nav-links { display: none; }
  .cover { aspect-ratio: 4 / 3; }
  .cover-meta { font-size: 10px; letter-spacing: 0.08em; }
  .cover-monolith .acid-block { width: 42%; height: 38%; padding: 44px 14px 14px; }
  .cover-monolith .acid-block > div { display: none; }
  .cover-monolith .cover-tag { left: 56px; top: 44px; max-width: 50%; font-size: 10px; }
  .cover-monolith .corner.tl { top: 44px; }
  .cover-quantum .rings, .cover-verdant .iso-stack { opacity: 0.4; }
  .concept-intro, .type-grid { grid-template-columns: 1fr; }
  .swatches, .hero-chips, .glance-grid { grid-template-columns: repeat(2, 1fr); }
  .gradients { grid-template-columns: 1fr; }
  .icon-grid { grid-template-columns: repeat(2, 1fr); }
  .span-3, .span-4, .span-5, .span-6, .span-7, .span-8, .span-9 { grid-column: span 12; }
  .q-metrics, .s-stats, .v-tiers { grid-template-columns: 1fr; }
  .block-head { flex-direction: column; align-items: flex-start; }
}