/* ======================================================================
   ArkTower -- Shared Design System
   NieR:Automata Tower / YoRHa aesthetic
   ====================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@300;400;500;600;700&display=swap');

/* -- Reset -- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  border-radius: 0 !important;
}

/* -- Design Tokens (dark default) -- */
:root {
  --bg: #0D0D0D;
  --bg-card: #1A1A1A;
  --bg-elevated: #242424;
  --bg-code: #111111;
  --text: #DAD4BB;
  --text-muted: #A89F8A;
  --text-dim: #8A8470;
  --accent: #C7372F;
  --green: #8BAA7F;
  --yellow: #D4A853;
  --blue: #6B8DAD;
  --border: #333333;
  --border-hover: #C7372F;
  --success: #8BAA7F;
  --nav-bg: rgba(13, 13, 13, 0.95);
  --nav-bg-solid: rgba(13, 13, 13, 0.98);
  --font-main: 'Rajdhani', 'Segoe UI', sans-serif;
  --font-mono: 'Courier New', 'Consolas', monospace;
}

/* -- Light theme tokens -- */
[data-theme="light"] {
  --bg: #F5F0E8;
  --bg-card: #FFFDF8;
  --bg-elevated: #EDE8DF;
  --bg-code: #ECE7DE;
  --text: #2A2520;
  --text-muted: #5A5549;
  --text-dim: #7A756A;
  --border: #D4CFC6;
  --border-hover: #C7372F;
  --nav-bg: rgba(245, 240, 232, 0.95);
  --nav-bg-solid: rgba(245, 240, 232, 0.98);
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-main);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* -- Scanline overlay -- */
.scanline-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
}

/* -- Navigation -- */
nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  height: 56px;
  gap: 20px;
}

.nav-brand {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
  margin-right: auto;
}

.nav-brand span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 10px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 14px;
}

/* -- Nav controls (i18n + theme toggles) -- */
.nav-controls {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-shrink: 0;
}

.nav-controls button {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1px;
  padding: 4px 10px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
  line-height: 1.4;
  min-width: 32px;
  text-align: center;
}

.nav-controls button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* -- Main container -- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

/* -- Hero -- */
.hero {
  position: relative;
  padding: 120px 0 100px;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 3px;
  background: var(--accent);
}

.hero-serial {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 3px;
  margin-bottom: 32px;
}

.hero-title {
  font-size: clamp(48px, 10vw, 96px);
  font-weight: 700;
  letter-spacing: 16px;
  text-transform: uppercase;
  line-height: 1;
  margin-bottom: 20px;
  animation: heroGlow 4s ease-in-out infinite;
}

.hero-title .accent {
  color: var(--accent);
}

.hero-title-sm {
  font-size: clamp(32px, 6vw, 56px);
  font-weight: 700;
  letter-spacing: 8px;
  text-transform: uppercase;
  line-height: 1.1;
  margin-bottom: 20px;
  animation: heroGlow 4s ease-in-out infinite;
}

@keyframes heroGlow {
  0%, 100% { text-shadow: 0 0 20px rgba(199, 55, 47, 0.0); opacity: 1; }
  25% { text-shadow: 0 0 30px rgba(199, 55, 47, 0.15); opacity: 0.98; }
  50% { text-shadow: 0 0 40px rgba(199, 55, 47, 0.25); opacity: 1; }
  75% { text-shadow: 0 0 20px rgba(199, 55, 47, 0.1); opacity: 0.97; }
}

@keyframes flicker {
  0%, 97%, 100% { opacity: 1; }
  98% { opacity: 0.85; }
  99% { opacity: 0.95; }
}

.hero-subtitle {
  font-size: 20px;
  font-weight: 300;
  color: var(--text-dim);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 32px;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--green);
  border: 1px solid var(--green);
  padding: 6px 20px;
  letter-spacing: 3px;
  animation: flicker 5s infinite;
}

.hero-meta {
  margin-top: 48px;
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.hero-meta-item {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 1px;
}

.hero-meta-item span {
  color: var(--text);
}

/* -- Sections -- */
section {
  padding: 80px 0;
  border-top: 1px solid var(--border);
}

.section-header {
  margin-bottom: 48px;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 3px;
  margin-bottom: 12px;
}

.section-title {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  padding-left: 16px;
  border-left: 3px solid var(--accent);
}

.section-desc {
  margin-top: 16px;
  max-width: 720px;
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.8;
}

/* -- Feature / Card grid -- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 28px 24px;
  transition: border-color 0.25s, transform 0.2s;
  position: relative;
}

.feature-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.feature-card::before {
  content: attr(data-index);
  position: absolute;
  top: 10px;
  right: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  opacity: 0.4;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
}

.feature-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  border: 1px solid rgba(199, 55, 47, 0.3);
  padding: 2px 8px;
  margin-top: 12px;
  letter-spacing: 1px;
}

/* -- Architecture (native HTML/CSS diagram) -- */
.arch-native {
  background: var(--bg-code);
  border: 1px solid var(--border);
  padding: 24px;
  overflow-x: auto;
  min-width: 0;
}

.arch-layer {
  border: 1px solid var(--border);
  padding: 14px 20px;
  text-align: center;
}

.arch-layer-title {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.arch-layer-items {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text);
  letter-spacing: 1px;
}

.arch-layer-items span {
  padding: 2px 8px;
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.arch-boxes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  padding: 16px 0;
}

.arch-box {
  border: 1px solid var(--border);
  padding: 12px 8px;
  text-align: center;
  background: var(--bg-card);
}

.arch-box-name {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 1px;
}

.arch-box-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 2px;
}

.arch-vline {
  display: flex;
  justify-content: center;
  padding: 2px 0;
}

.arch-vline::before {
  content: '';
  width: 2px;
  height: 20px;
  background: var(--border);
}

.arch-center-box {
  border: 1px solid var(--border);
  padding: 12px 20px;
  text-align: center;
  background: var(--bg-card);
  max-width: 400px;
  margin: 0 auto;
}

.arch-center-box .arch-box-name {
  display: inline;
}

.arch-annotation {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 1px;
  margin-left: 12px;
}

/* -- State flow diagram (native HTML/CSS) -- */
.state-flow {
  background: var(--bg-code);
  border: 1px solid var(--border);
  padding: 24px;
  overflow-x: auto;
}

.state-flow-section {
  margin-bottom: 24px;
}

.state-flow-section:last-child {
  margin-bottom: 0;
}

.state-flow-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 2px;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.state-flow-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.state-box {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  letter-spacing: 1px;
  text-align: center;
  white-space: nowrap;
}

.state-box[data-status="submitted"] { border-color: var(--text-dim); color: var(--text-dim); }
.state-box[data-status="queued"] { border-color: var(--blue); color: var(--blue); }
.state-box[data-status="in_progress"] { border-color: var(--green); color: var(--green); }
.state-box[data-status="review"] { border-color: var(--yellow); color: var(--yellow); }
.state-box[data-status="input_required"] { border-color: var(--yellow); color: var(--yellow); }
.state-box[data-status="blocked"] { border-color: var(--accent); color: var(--accent); }
.state-box[data-status="completed"] { border-color: var(--green); color: var(--green); border-width: 2px; }
.state-box[data-status="failed"] { border-color: var(--accent); color: var(--accent); border-width: 2px; }
.state-box[data-status="canceled"] { border-color: var(--text-dim); color: var(--text-dim); border-width: 2px; }
.state-box[data-status="timed_out"] { border-color: var(--yellow); color: var(--yellow); border-width: 2px; }

.state-arrow {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-dim);
  white-space: nowrap;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.state-arrow-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 1px;
}

.state-flow-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 8px;
}

.state-flow-cell {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  padding: 6px 10px;
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.state-flow-cell .trigger-name {
  color: var(--text);
  letter-spacing: 1px;
}

/* -- Code blocks -- */
.code-block {
  position: relative;
  background: var(--bg-code);
  border: 1px solid var(--border);
  padding: 24px;
  margin-bottom: 16px;
  overflow-x: auto;
}

.code-block-wrapper {
  position: relative;
}

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-family: 'Rajdhani', monospace;
  font-size: 0.7rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 10px;
  cursor: pointer;
  transition: all 0.2s;
  z-index: 11;
}

.copy-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.copy-btn.copied {
  border-color: var(--success);
  color: var(--success);
}

.code-block pre {
  margin: 0;
}

.code-block pre code {
  display: block;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}

/* Structured data (JSON, YAML, TOML): preserve exact indentation (no reflow) */
.code-block pre code.json-schema-code,
.code-block pre code.code-structured {
  white-space: pre;
  word-break: normal;
  overflow-x: auto;
}

.code-block .comment {
  color: var(--text-dim);
}

.code-block .command {
  color: var(--green);
}

.code-label {
  position: absolute;
  top: 0;
  right: 72px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  background: var(--bg-card);
  border-left: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 4px 12px;
  letter-spacing: 1px;
  z-index: 9;
}

.code-block-wrapper pre {
  padding: 40px 0 0;
  margin: 0;
}

/* -- Status display (aligned bars) -- */
.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.status-row {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 16px 20px;
  transition: border-color 0.2s;
}

.status-row:hover {
  border-color: var(--border-hover);
}

.status-label {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--text-dim);
  width: 180px;
  flex-shrink: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.status-value {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 1px;
  width: 52px;
  text-align: right;
  flex-shrink: 0;
}

.status-bar {
  flex: 1;
  height: 3px;
  background: var(--bg-elevated);
  margin: 0 16px;
  position: relative;
  min-width: 40px;
}

.status-bar-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  transition: width 0.6s ease;
}

.status-perfect { color: var(--green); }
.status-good { color: var(--text); }
.status-warn { color: var(--yellow); }

.status-overall {
  background: var(--bg-card);
  border: 1px solid var(--accent);
  padding: 24px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.status-overall-label {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
}

.status-overall-value {
  font-family: var(--font-mono);
  font-size: 36px;
  font-weight: 700;
  color: var(--green);
}

.status-overall-gate {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 4px;
}

/* -- About content -- */
.about-content {
  max-width: 800px;
}

.about-content p {
  font-size: 17px;
  line-height: 1.9;
  margin-bottom: 20px;
}

.about-content strong {
  color: var(--text);
  font-weight: 600;
}

.inline-code {
  font-family: var(--font-mono);
  font-size: 14px;
  background: var(--bg-code);
  border: 1px solid var(--border);
  padding: 2px 8px;
}

/* -- Links -- */
a {
  color: var(--accent);
  text-decoration: none;
  transition: text-decoration 0.2s;
}

a:hover {
  text-decoration: underline;
}

/* -- Tables -- */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  overflow-x: auto;
  display: block;
}

.spec-table thead,
.spec-table tbody,
.spec-table tr {
  display: table;
  width: 100%;
  table-layout: fixed;
}

.spec-table th {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 2px;
  text-transform: uppercase;
  text-align: left;
  padding: 12px 16px;
  border-bottom: 2px solid var(--border);
  background: var(--bg-code);
}

.spec-table td {
  font-size: 14px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: top;
}

.spec-table tr:hover td {
  background: rgba(199, 55, 47, 0.03);
}

.spec-table code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--bg-code);
  border: 1px solid var(--border);
  padding: 1px 6px;
  color: var(--text);
}

/* -- Badges -- */
.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
  border: 1px solid;
}

.badge-submitted { color: var(--text-dim); border-color: var(--text-dim); }
.badge-queued { color: var(--blue); border-color: var(--blue); }
.badge-in_progress { color: var(--green); border-color: var(--green); }
.badge-review { color: var(--yellow); border-color: var(--yellow); }
.badge-input_required { color: var(--yellow); border-color: var(--yellow); }
.badge-blocked { color: var(--accent); border-color: var(--accent); }
.badge-completed { color: var(--green); border-color: var(--green); background: rgba(139,170,127,0.08); }
.badge-failed { color: var(--accent); border-color: var(--accent); background: rgba(199,55,47,0.08); }
.badge-canceled { color: var(--text-dim); border-color: var(--text-dim); background: rgba(138,132,112,0.08); }
.badge-timed_out { color: var(--yellow); border-color: var(--yellow); background: rgba(212,168,83,0.08); }

.badge-critical { color: var(--accent); border-color: var(--accent); }
.badge-high { color: var(--yellow); border-color: var(--yellow); }
.badge-medium { color: var(--text-muted); border-color: var(--text-muted); }
.badge-low { color: var(--text-dim); border-color: var(--text-dim); }

/* -- Collapsible -- */
details {
  background: var(--bg-card);
  border: 1px solid var(--border);
  margin-bottom: 16px;
}

details[open] {
  border-color: var(--accent);
}

details summary {
  padding: 16px 20px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  transition: color 0.2s;
  list-style: none;
}

details summary::-webkit-details-marker { display: none; }

details summary::before {
  content: '\25B8 ';
  color: var(--accent);
}

details[open] summary::before {
  content: '\25BE ';
}

details summary:hover {
  color: var(--text);
}

details .detail-content {
  padding: 0 20px 20px;
}

/* -- Lifecycle diagram -- */
.lifecycle-flow {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.lifecycle-node {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  letter-spacing: 1px;
}

.lifecycle-arrow {
  color: var(--text-dim);
  font-size: 14px;
}

.lifecycle-node.active {
  border-color: var(--accent);
  color: var(--accent);
}

.lifecycle-branch {
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 12px;
}

/* -- Lined code block (with line numbers) -- */
.lined-code {
  position: relative;
  background: var(--bg-code);
  border: 1px solid var(--border);
  overflow-x: auto;
  margin-bottom: 16px;
}

.lined-code .code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 2px;
}

.lined-code .code-block-wrapper {
  position: relative;
}

.lined-code .code-block-wrapper pre {
  padding: 40px 16px 16px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text);
  margin: 0;
  white-space: pre;
  counter-reset: line;
}

.lined-code .ln {
  display: inline-block;
  width: 32px;
  text-align: right;
  margin-right: 16px;
  color: var(--text-dim);
  opacity: 0.4;
  user-select: none;
}

.lined-code .yaml-key { color: var(--blue); }
.lined-code .yaml-val { color: var(--green); }
.lined-code .yaml-str { color: var(--text); }
.lined-code .md-body { color: var(--text-muted); }

/* -- Format spec tabs (.task.md / .task.json) -- */
.format-tabs {
  margin: 16px 0;
}

.tab-header {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
}

.tab-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-bottom: none;
  color: var(--text-dim);
  font-family: 'Rajdhani', monospace;
  font-size: 0.75rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 8px 20px;
  cursor: pointer;
  transition: all 0.2s;
}

.tab-btn:hover {
  color: var(--text);
  border-color: var(--accent);
}

.tab-btn.active {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--bg-card);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* -- Two-column layout -- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

/* -- Footer -- */
footer {
  border-top: 1px solid var(--border);
  padding: 60px 0;
  text-align: center;
}

.footer-quote {
  font-size: 16px;
  font-style: italic;
  color: var(--text-dim);
  margin-bottom: 24px;
  letter-spacing: 2px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.footer-links a {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  opacity: 0.6;
}

/* -- Responsive -- */
@media (max-width: 1024px) {
  .status-label { width: 160px; }
  .arch-boxes { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--nav-bg-solid);
    border-bottom: 1px solid var(--border);
    padding: 16px 32px;
    gap: 16px;
  }
  .nav-toggle { display: block; }
  .container { padding: 0 20px; }
  .hero { padding: 80px 0 60px; }
  .hero-title { letter-spacing: 8px; }
  .hero-title-sm { letter-spacing: 4px; }
  .hero-meta { gap: 20px; }
  section { padding: 60px 0; }
  .feature-grid { grid-template-columns: 1fr; }
  .status-grid { grid-template-columns: 1fr; }
  .status-label { width: 150px; font-size: 11px; }
  .status-overall { flex-direction: column; gap: 12px; text-align: center; }
  .arch-native { padding: 16px; }
  .arch-boxes { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .arch-layer-items { gap: 4px; }
  .two-col { grid-template-columns: 1fr; }
  .spec-table { font-size: 13px; }
  .spec-table th,
  .spec-table td { padding: 8px 10px; }
  .state-flow { padding: 16px; }
}

@media (max-width: 480px) {
  .hero-title { letter-spacing: 4px; }
  .hero-title-sm { letter-spacing: 2px; }
  .hero-subtitle { font-size: 14px; letter-spacing: 2px; }
  .arch-boxes { grid-template-columns: 1fr 1fr; }
  .status-label { width: 120px; }
}