:root {
  color-scheme: dark;

  --bg-page: #090b10;
  --bg-section: #10141b;
  --bg-panel: #171d27;
  --bg-panel-raised: #222b38;

  --metal-strong: #6f7c8c;
  --metal-soft: #aab6c4;
  --metal-bright: #dce4ec;

  --brand-gold: #c78a2c;
  --brand-gold-bright: #e3b24a;
  --brand-bronze: #8d5a2b;

  --accent-cyan: #55d6ff;
  --accent-green: #86f06d;
  --accent-red: #d84a43;
  --accent-violet: #7b61ff;

  --text-primary: #e8edf2;
  --text-secondary: #b6c0cb;
  --text-muted: #8190a0;
  --text-inverse: #090b10;

  --border-default: rgba(170, 182, 196, 0.28);
  --border-strong: rgba(220, 228, 236, 0.42);
  --focus-ring: 0 0 0 2px rgba(85, 214, 255, 0.45);

  --shadow-panel: 0 8px 24px rgba(0, 0, 0, 0.28);
  --shadow-button: 0 3px 0 rgba(0, 0, 0, 0.35);
  --inset-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  --shadow-panel-hover: 0 12px 30px rgba(0, 0, 0, 0.34);
  --shadow-pressed:
    inset 0 3px 8px rgba(0, 0, 0, 0.35),
    0 1px 0 rgba(255, 255, 255, 0.04);

  --font-display: "Oxanium", "Bebas Neue", sans-serif;
  --font-body: "Inter", "IBM Plex Sans", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: clamp(1.5rem, 2.3vw, 2rem);
  --text-hero: clamp(3rem, 7vw, 5.75rem);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;

  --border-hairline: 1px;
  --border-frame: 2px;

  --motion-fast: 120ms;
  --motion-base: 180ms;
  --motion-slow: 260ms;
  --ease-mechanical: cubic-bezier(0.24, 0.84, 0.32, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text-secondary);
  background:
    radial-gradient(circle at top, rgba(227, 178, 74, 0.12), transparent 30%),
    linear-gradient(180deg, var(--bg-section) 0%, var(--bg-page) 100%);
}

a {
  color: inherit;
}

button,
input,
textarea {
  font: inherit;
}

.chrome-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 100% 72px, 72px 100%;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.75), transparent 92%);
  opacity: 0.32;
}

.page-shell {
  width: min(1200px, calc(100% - 2rem));
  margin: 0 auto;
  padding: var(--space-5) 0 var(--space-7);
}

.panel {
  position: relative;
  background: linear-gradient(180deg, var(--bg-panel-raised), var(--bg-panel));
  border: var(--border-frame) solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-panel), var(--inset-highlight);
  overflow: hidden;
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border-top: var(--border-hairline) solid rgba(255, 255, 255, 0.09);
  border-left: var(--border-hairline) solid rgba(255, 255, 255, 0.05);
  border-right: var(--border-hairline) solid rgba(0, 0, 0, 0.22);
  border-bottom: var(--border-hairline) solid rgba(0, 0, 0, 0.34);
  pointer-events: none;
}

.panel-raised {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 12%),
    linear-gradient(180deg, var(--bg-panel-raised), var(--bg-panel));
}

.panel-inset {
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.18), transparent 16%),
    linear-gradient(180deg, #131922, #0f141c);
  box-shadow:
    inset 0 2px 10px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.site-header {
  margin-bottom: var(--space-6);
}

.masthead-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 10px var(--space-5);
  border-bottom: 1px solid rgba(170, 182, 196, 0.16);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent),
    linear-gradient(90deg, rgba(227, 178, 74, 0.08), transparent 28%);
}

.masthead-chip {
  display: inline-flex;
  align-items: center;
  min-height: 1.7rem;
  padding: 0.2rem 0.55rem;
  border: 1px solid rgba(170, 182, 196, 0.2);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: rgba(0, 0, 0, 0.14);
}

.masthead-rule {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(227, 178, 74, 0.4), rgba(170, 182, 196, 0.16));
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.brand-mark {
  width: 1rem;
  height: 1rem;
  transform: rotate(45deg);
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--brand-gold-bright), var(--brand-gold));
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.12),
    0 0 18px rgba(199, 138, 44, 0.2);
}

.brand-copy {
  display: flex;
  flex-direction: column;
}

.brand-name,
.footer-title {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.brand-meta,
.meta-line,
.meta-note,
.signal-label,
.field-label,
.tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-meta,
.meta-note,
.signal-label,
.meta-line {
  color: var(--text-muted);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: flex-end;
}

.nav-link {
  position: relative;
  padding: 0.72rem 0.95rem;
  text-decoration: none;
  border: 1px solid rgba(170, 182, 196, 0.1);
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.025), rgba(0, 0, 0, 0.08));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    inset 0 -1px 0 rgba(0, 0, 0, 0.18);
  transition:
    transform var(--motion-fast) var(--ease-mechanical),
    border-color var(--motion-base) var(--ease-mechanical),
    color var(--motion-base) var(--ease-mechanical),
    background var(--motion-base) var(--ease-mechanical),
    box-shadow var(--motion-base) var(--ease-mechanical);
}

.nav-link:hover {
  color: var(--text-primary);
  border-color: rgba(199, 138, 44, 0.28);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(0, 0, 0, 0.04));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 0 0 1px rgba(227, 178, 74, 0.04),
    0 10px 18px -16px rgba(227, 178, 74, 0.4);
  transform: translateY(-1px);
}

.nav-link:active {
  transform: translateY(1px);
}

.nav-link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.nav-link-active {
  color: var(--text-primary);
  border-color: rgba(227, 178, 74, 0.36);
  background:
    linear-gradient(180deg, rgba(227, 178, 74, 0.16), rgba(141, 90, 43, 0.12)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(0, 0, 0, 0.05));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    inset 0 -1px 0 rgba(0, 0, 0, 0.16),
    0 0 0 1px rgba(227, 178, 74, 0.05);
}

.nav-link-active::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 4px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(227, 178, 74, 0.2), rgba(85, 214, 255, 0.95));
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(280px, 0.9fr);
  gap: var(--space-5);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  margin-bottom: var(--space-7);
}

.panel-hero {
  background:
    linear-gradient(120deg, rgba(227, 178, 74, 0.1), transparent 28%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 14%),
    linear-gradient(180deg, #202836, #10161f 88%);
}

.eyebrow {
  margin: 0 0 var(--space-3);
  color: var(--brand-gold-bright);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--font-display);
  line-height: 0.96;
  color: var(--text-primary);
  text-transform: uppercase;
}

h1 {
  max-width: 10ch;
  font-size: var(--text-hero);
  letter-spacing: 0.03em;
}

h2 {
  font-size: var(--text-xl);
  letter-spacing: 0.05em;
}

h3 {
  font-size: 1.5rem;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-3);
}

.hero-text,
.body-demo,
.card p,
.contact-note p,
.footer-copy {
  max-width: 66ch;
}

.hero-text {
  margin: var(--space-4) 0 0;
  font-size: var(--text-lg);
  color: var(--text-secondary);
}

.hero-actions,
.button-stack,
.tag-row,
.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.hero-actions {
  margin-top: var(--space-5);
}

.button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.8rem 1.15rem;
  border: var(--border-frame) solid transparent;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition:
    transform var(--motion-fast) var(--ease-mechanical),
    box-shadow var(--motion-base) var(--ease-mechanical),
    border-color var(--motion-base) var(--ease-mechanical),
    background var(--motion-base) var(--ease-mechanical),
    color var(--motion-base) var(--ease-mechanical);
}

.button:hover,
.card:hover,
.text-link:hover,
.tag:hover,
.field input:hover,
.field textarea:hover {
  transform: translateY(-2px);
}

.button:active,
.card:active,
.tag:active {
  transform: translateY(1px);
  box-shadow: var(--shadow-pressed);
}

.button:focus-visible,
.text-link:focus-visible,
.field input:focus-visible,
.field textarea:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.button-primary {
  color: var(--text-inverse);
  background: linear-gradient(180deg, var(--brand-gold-bright), var(--brand-gold));
  border-color: rgba(227, 178, 74, 0.38);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.2),
    inset 0 -1px 0 rgba(89, 52, 16, 0.35),
    var(--shadow-button);
}

.button-primary:hover {
  filter: brightness(1.04);
}

.button-secondary {
  color: var(--text-primary);
  background: linear-gradient(180deg, #4a5768, #2d3847);
  border-color: rgba(220, 228, 236, 0.18);
  box-shadow: var(--shadow-button);
}

.button-secondary:hover,
.button-ghost:hover {
  border-color: rgba(85, 214, 255, 0.4);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 0 0 1px rgba(85, 214, 255, 0.08),
    0 12px 24px -18px rgba(85, 214, 255, 0.35);
}

.button-ghost {
  color: var(--text-secondary);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0.08));
  border-color: rgba(170, 182, 196, 0.18);
  box-shadow: var(--shadow-button);
}

.hero-aside,
.token-card,
.contact-note {
  padding: var(--space-4);
}

.signal-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  border-bottom: 1px solid rgba(170, 182, 196, 0.14);
}

.signal-row:last-of-type {
  border-bottom: 0;
}

.signal-value {
  color: var(--text-primary);
  font-weight: 600;
}

.signal-value.gold {
  color: var(--brand-gold-bright);
}

.signal-value.cyan {
  color: var(--accent-cyan);
}

.divider {
  height: 1px;
  margin: var(--space-4) 0;
  background: linear-gradient(90deg, transparent, rgba(220, 228, 236, 0.18), transparent);
}

.section-block {
  margin-bottom: var(--space-7);
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.project-grid,
.system-layout,
.contact-layout {
  display: grid;
  gap: var(--space-4);
}

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

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

.contact-layout {
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.8fr);
  align-items: start;
}

.card,
.contact-form {
  padding: var(--space-5);
  transition:
    transform var(--motion-fast) var(--ease-mechanical),
    box-shadow var(--motion-base) var(--ease-mechanical),
    border-color var(--motion-base) var(--ease-mechanical);
}

.card:hover,
.contact-form:hover {
  border-color: rgba(227, 178, 74, 0.24);
  box-shadow: var(--shadow-panel-hover), var(--inset-highlight);
}

.card p {
  margin: 0 0 var(--space-4);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--accent-cyan);
  font-weight: 600;
  text-decoration: none;
  transition:
    transform var(--motion-fast) var(--ease-mechanical),
    color var(--motion-base) var(--ease-mechanical),
    text-shadow var(--motion-base) var(--ease-mechanical);
}

.text-link::after {
  content: ">";
  font-family: var(--font-mono);
  color: var(--brand-gold-bright);
}

.text-link:hover {
  color: #dbf7ff;
  text-shadow: 0 0 10px rgba(85, 214, 255, 0.22);
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.35rem 0.6rem;
  color: var(--text-secondary);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(0, 0, 0, 0.12));
  border: 1px solid rgba(170, 182, 196, 0.18);
  border-radius: var(--radius-sm);
  transition:
    transform var(--motion-fast) var(--ease-mechanical),
    border-color var(--motion-base) var(--ease-mechanical),
    color var(--motion-base) var(--ease-mechanical);
}

.tag:hover {
  color: var(--text-primary);
  border-color: rgba(199, 138, 44, 0.28);
}

.swatch-grid,
.type-spec,
.spec-list {
  display: grid;
  gap: var(--space-3);
}

.swatch {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--text-primary);
}

.swatch-chip {
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.07);
}

.swatch-chip.obsidian {
  background: var(--bg-page);
}

.swatch-chip.steel {
  background: linear-gradient(180deg, var(--metal-bright), var(--metal-strong));
}

.swatch-chip.gold {
  background: linear-gradient(180deg, var(--brand-gold-bright), var(--brand-gold));
}

.swatch-chip.cyan {
  background: linear-gradient(180deg, #9be8ff, var(--accent-cyan));
}

.type-display {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.type-body,
.type-mono {
  margin: 0;
}

.type-mono {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.spec-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid rgba(170, 182, 196, 0.14);
  color: var(--text-primary);
}

.spec-row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.spec-row span:first-child {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.contact-form {
  display: grid;
  gap: var(--space-4);
}

.field {
  display: grid;
  gap: var(--space-2);
}

.field input,
.field textarea {
  width: 100%;
  padding: 0.9rem 1rem;
  color: var(--text-primary);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0.15)),
    #0d131c;
  border: var(--border-frame) solid rgba(170, 182, 196, 0.16);
  border-radius: var(--radius-md);
  box-shadow:
    inset 0 2px 8px rgba(0, 0, 0, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
  transition:
    transform var(--motion-fast) var(--ease-mechanical),
    border-color var(--motion-base) var(--ease-mechanical),
    box-shadow var(--motion-base) var(--ease-mechanical);
}

.field input::placeholder,
.field textarea::placeholder {
  color: #7f8a98;
}

.field input:focus-visible,
.field textarea:focus-visible {
  border-color: rgba(85, 214, 255, 0.45);
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
}

.footer-copy {
  margin: 0;
  color: var(--text-muted);
}

.motion-note {
  margin-top: var(--space-4);
}

@media (max-width: 960px) {
  .hero,
  .project-grid,
  .system-layout,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .topbar,
  .footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 1rem, 1200px);
    padding-top: var(--space-3);
  }

  .topbar,
  .hero,
  .card,
  .contact-form,
  .footer {
    padding: var(--space-4);
  }

  .masthead-bar {
    padding-inline: var(--space-4);
  }

  h1 {
    max-width: 100%;
  }

  .nav,
  .hero-actions,
  .button-stack,
  .form-actions {
    width: 100%;
  }

  .button,
  .nav-link {
    width: 100%;
  }

  .spec-row {
    flex-direction: column;
    gap: var(--space-1);
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .button:hover,
  .card:hover,
  .text-link:hover,
  .tag:hover,
  .field input:hover,
  .field textarea:hover,
  .nav a:hover {
    transform: none;
  }
}