/* ==========================================================================
   Pulse — Material Design 3 design system
   Seed color: #006B5D (teal) — tonal palette derived per M3 spec
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&family=Roboto+Flex:opsz,wght@8..144,400;8..144,500;8..144,700&display=swap');

:root {
  /* ---- M3 tonal palette (teal seed #006A6A / #006B5D family) ---- */
  --md-primary: #00696D;
  --md-on-primary: #FFFFFF;
  --md-primary-container: #9CEEF0;
  --md-on-primary-container: #002021;

  --md-secondary: #4A6363;
  --md-on-secondary: #FFFFFF;
  --md-secondary-container: #CCE8E7;
  --md-on-secondary-container: #051F1F;

  --md-tertiary: #4B607C;
  --md-on-tertiary: #FFFFFF;
  --md-tertiary-container: #D3E4FF;
  --md-on-tertiary-container: #041C35;

  --md-error: #BA1A1A;
  --md-on-error: #FFFFFF;
  --md-error-container: #FFDAD6;
  --md-on-error-container: #410002;

  --md-warning: #7A5900;
  --md-warning-container: #FFDEA1;
  --md-on-warning-container: #271900;

  --md-background: #FAFDFC;
  --md-on-background: #191C1C;

  --md-surface: #FAFDFC;
  --md-on-surface: #191C1C;
  --md-on-surface-variant: #3F4948;

  --md-surface-variant: #DAE5E4;
  --md-outline: #6F7979;
  --md-outline-variant: #BEC9C8;

  --md-surface-dim: #DAD9D8;
  --md-surface-bright: #FAFDFC;
  --md-surface-container-lowest: #FFFFFF;
  --md-surface-container-low: #F4F7F6;
  --md-surface-container: #EEF1F0;
  --md-surface-container-high: #E8EBEA;
  --md-surface-container-highest: #E2E5E4;

  --md-inverse-surface: #2D3131;
  --md-inverse-on-surface: #EFF1F0;
  --md-inverse-primary: #80D5D8;

  --md-scrim: #000000;

  /* ---- Elevation (real M3 shadow tokens: two-shadow stacks) ---- */
  --md-elevation-0: none;
  --md-elevation-1: 0 1px 2px 0 rgba(0,0,0,0.30), 0 1px 3px 1px rgba(0,0,0,0.15);
  --md-elevation-2: 0 1px 2px 0 rgba(0,0,0,0.30), 0 2px 6px 2px rgba(0,0,0,0.15);
  --md-elevation-3: 0 1px 3px 0 rgba(0,0,0,0.30), 0 4px 8px 3px rgba(0,0,0,0.15);
  --md-elevation-4: 0 2px 3px 0 rgba(0,0,0,0.30), 0 6px 10px 4px rgba(0,0,0,0.15);
  --md-elevation-5: 0 4px 4px 0 rgba(0,0,0,0.30), 0 8px 12px 6px rgba(0,0,0,0.15);

  /* ---- Shape (corner radii) ---- */
  --md-shape-xs: 4px;
  --md-shape-sm: 8px;
  --md-shape-md: 12px;
  --md-shape-lg: 16px;
  --md-shape-xl: 28px;
  --md-shape-full: 999px;

  /* ---- Motion ---- */
  --md-easing-standard: cubic-bezier(0.2, 0, 0, 1);
  --md-duration-short: 150ms;
  --md-duration-medium: 300ms;

  --md-font: 'Roboto', 'Roboto Flex', system-ui, -apple-system, sans-serif;
}

/* Dark-tuned tokens used only for the hero / top app bar surface (inverse) */
.on-dark {
  --local-surface: var(--md-inverse-surface);
  --local-on-surface: var(--md-inverse-on-surface);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--md-font);
  background: var(--md-surface);
  color: var(--md-on-surface);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

a { color: inherit; }

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

/* ---- Type scale (M3) ---- */
.display-lg   { font-size: 57px; line-height: 64px; font-weight: 400; letter-spacing: -0.25px; margin: 0; }
.display-md   { font-size: 45px; line-height: 52px; font-weight: 400; margin: 0; }
.display-sm   { font-size: 36px; line-height: 44px; font-weight: 400; margin: 0; }
.headline-lg  { font-size: 32px; line-height: 40px; font-weight: 400; margin: 0; }
.headline-md  { font-size: 28px; line-height: 36px; font-weight: 400; margin: 0; }
.headline-sm  { font-size: 24px; line-height: 32px; font-weight: 400; margin: 0; }
.title-lg     { font-size: 22px; line-height: 28px; font-weight: 500; margin: 0; }
.title-md     { font-size: 16px; line-height: 24px; font-weight: 500; letter-spacing: 0.15px; margin: 0; }
.title-sm     { font-size: 14px; line-height: 20px; font-weight: 500; letter-spacing: 0.1px; margin: 0; }
.body-lg      { font-size: 16px; line-height: 24px; font-weight: 400; letter-spacing: 0.5px; margin: 0; }
.body-md      { font-size: 14px; line-height: 20px; font-weight: 400; letter-spacing: 0.25px; margin: 0; }
.body-sm      { font-size: 12px; line-height: 16px; font-weight: 400; letter-spacing: 0.4px; margin: 0; }
.label-lg     { font-size: 14px; line-height: 20px; font-weight: 500; letter-spacing: 0.1px; margin: 0; }
.label-md     { font-size: 12px; line-height: 16px; font-weight: 500; letter-spacing: 0.5px; margin: 0; }
.label-sm     { font-size: 11px; line-height: 16px; font-weight: 500; letter-spacing: 0.5px; margin: 0; }

.on-surface-variant { color: var(--md-on-surface-variant); }
.text-primary { color: var(--md-primary); }

/* ==========================================================================
   Layout shell
   ========================================================================== */

.page-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 88px 0; }
section.tight { padding: 56px 0; }

.section-header {
  max-width: 720px;
  margin-bottom: 48px;
}
.section-header .eyebrow {
  color: var(--md-primary);
  text-transform: uppercase;
  margin-bottom: 12px;
  display: block;
}

/* ==========================================================================
   Top App Bar
   ========================================================================== */

.md-top-app-bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 64px;
  display: flex;
  align-items: center;
  background: color-mix(in srgb, var(--md-surface-container) 92%, transparent);
  backdrop-filter: blur(16px);
  box-shadow: var(--md-elevation-0);
  border-bottom: 1px solid var(--md-outline-variant);
  transition: box-shadow var(--md-duration-medium) var(--md-easing-standard);
}
.md-top-app-bar.scrolled {
  box-shadow: var(--md-elevation-2);
  border-bottom-color: transparent;
}
.app-bar-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.app-bar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.app-bar-brand .mark {
  width: 32px; height: 32px;
  border-radius: var(--md-shape-sm);
  background: linear-gradient(135deg, var(--md-primary), var(--md-tertiary));
  display: flex; align-items: center; justify-content: center;
  color: var(--md-on-primary);
  font-weight: 700;
  font-size: 15px;
}
.app-bar-brand .brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.app-bar-brand .brand-name { font-size: 18px; font-weight: 500; color: var(--md-on-surface); }
.app-bar-brand .brand-sub { font-size: 11px; color: var(--md-on-surface-variant); letter-spacing: 0.5px; }

.app-bar-nav {
  display: flex;
  gap: 4px;
  margin-left: 8px;
  flex: 1;
}
.app-bar-nav a {
  padding: 10px 16px;
  border-radius: var(--md-shape-full);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--md-on-surface-variant);
  transition: background var(--md-duration-short) var(--md-easing-standard), color var(--md-duration-short);
}
.app-bar-nav a:hover { background: var(--md-surface-container-high); color: var(--md-on-surface); }

.app-bar-actions { display: flex; align-items: center; gap: 8px; }

/* ==========================================================================
   Buttons — Material 3
   ========================================================================== */

.md-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 24px;
  border-radius: var(--md-shape-full);
  border: none;
  font-family: var(--md-font);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.1px;
  cursor: pointer;
  text-decoration: none;
  overflow: hidden;
  white-space: nowrap;
  transition: box-shadow var(--md-duration-short) var(--md-easing-standard),
              background-color var(--md-duration-short) var(--md-easing-standard);
}
.md-btn::before {
  content: '';
  position: absolute; inset: 0;
  background: currentColor;
  opacity: 0;
  transition: opacity var(--md-duration-short) var(--md-easing-standard);
}
.md-btn:hover::before { opacity: 0.08; }
.md-btn:active::before { opacity: 0.12; }
.md-btn:focus-visible { outline: 2px solid var(--md-primary); outline-offset: 2px; }

.md-btn--filled { background: var(--md-primary); color: var(--md-on-primary); }
.md-btn--filled:hover { box-shadow: var(--md-elevation-1); }

.md-btn--tonal { background: var(--md-secondary-container); color: var(--md-on-secondary-container); }

.md-btn--outlined { background: transparent; color: var(--md-primary); border: 1px solid var(--md-outline); }

.md-btn--text { background: transparent; color: var(--md-primary); padding: 0 12px; }

.md-btn--on-dark.md-btn--outlined { color: var(--md-inverse-on-surface); border-color: rgba(255,255,255,0.5); }
.md-btn--on-dark.md-btn--filled { background: var(--md-inverse-on-surface); color: var(--md-inverse-surface); }

.md-btn .material-icon { font-size: 18px; }

/* FAB */
.md-fab {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  height: 56px;
  padding: 0 20px 0 16px;
  border-radius: var(--md-shape-lg);
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  border: none;
  box-shadow: var(--md-elevation-3);
  cursor: pointer;
  font-family: var(--md-font);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: box-shadow var(--md-duration-short) var(--md-easing-standard), transform var(--md-duration-short);
}
.md-fab:hover { box-shadow: var(--md-elevation-4); transform: translateY(-1px); }
.md-fab .fab-icon {
  width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
}

/* ==========================================================================
   Chips
   ========================================================================== */

.md-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 14px;
  border-radius: var(--md-shape-sm);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.3px;
  border: 1px solid var(--md-outline-variant);
  background: var(--md-surface-container-low);
  color: var(--md-on-surface-variant);
  white-space: nowrap;
}
.md-chip .dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }

.md-chip--healthy { background: var(--md-secondary-container); color: var(--md-on-secondary-container); border-color: transparent; }
.md-chip--healthy .dot { background: #146C63; }

.md-chip--degraded { background: var(--md-warning-container); color: var(--md-on-warning-container); border-color: transparent; }
.md-chip--degraded .dot { background: #7A5900; }

.md-chip--version {
  background: var(--md-tertiary-container);
  color: var(--md-on-tertiary-container);
  border-color: transparent;
  font-weight: 700;
}

.md-chip--latest {
  background: var(--md-primary);
  color: var(--md-on-primary);
  border-color: transparent;
}

/* ==========================================================================
   Cards
   ========================================================================== */

.md-card {
  border-radius: var(--md-shape-lg);
  padding: 24px;
  background: var(--md-surface-container-low);
}
.md-card--elevated { box-shadow: var(--md-elevation-1); background: var(--md-surface-container-low); }
.md-card--elevated:hover { box-shadow: var(--md-elevation-2); }
.md-card--filled { background: var(--md-surface-container-high); }
.md-card--outlined { background: var(--md-surface); border: 1px solid var(--md-outline-variant); }

.card-grid {
  display: grid;
  gap: 20px;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  padding-top: 168px;
  padding-bottom: 96px;
  background: radial-gradient(120% 100% at 15% 0%, #0B3B3C 0%, #0A2E30 42%, #0B1F21 100%);
  color: var(--md-inverse-on-surface);
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 400px at 85% 10%, rgba(156,238,240,0.16), transparent 70%),
    radial-gradient(500px 400px at 60% 90%, rgba(211,228,255,0.10), transparent 70%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--md-shape-full);
  background: rgba(156,238,240,0.14);
  color: var(--md-primary-container);
  margin-bottom: 24px;
  border: 1px solid rgba(156,238,240,0.28);
}
.hero h1 {
  font-size: 64px;
  line-height: 1.02;
  font-weight: 400;
  margin: 0 0 20px 0;
  letter-spacing: -1px;
}
.hero h1 span { color: var(--md-primary-container); font-weight: 700; }
.hero p.pitch {
  font-size: 20px;
  line-height: 1.5;
  color: rgba(239,241,240,0.82);
  max-width: 540px;
  margin: 0 0 36px 0;
}
.hero-cta-row { display: flex; gap: 12px; flex-wrap: wrap; }

.hero-visual {
  border-radius: var(--md-shape-xl);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  box-shadow: var(--md-elevation-4);
  padding: 24px;
  backdrop-filter: blur(6px);
}
.hero-visual-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.hero-visual-header .live-dot {
  width: 8px; height: 8px; border-radius: 50%; background: #6FF7C6;
  box-shadow: 0 0 0 0 rgba(111,247,198,0.6);
  animation: pulse-dot 2s infinite;
  display: inline-block; margin-right: 6px;
}
@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 rgba(111,247,198,0.5); }
  70% { box-shadow: 0 0 0 8px rgba(111,247,198,0); }
  100% { box-shadow: 0 0 0 0 rgba(111,247,198,0); }
}
.hero-visual-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  font-size: 14px;
  color: rgba(239,241,240,0.85);
}
.hero-visual-row:last-child { border-bottom: none; }
.hero-visual-row .val { font-weight: 700; color: #fff; }

/* ==========================================================================
   Stat tiles
   ========================================================================== */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.stat-card {
  border-radius: var(--md-shape-lg);
  padding: 28px 24px;
  background: var(--md-surface-container-low);
  box-shadow: var(--md-elevation-1);
  transition: box-shadow var(--md-duration-medium) var(--md-easing-standard);
}
.stat-card:hover { box-shadow: var(--md-elevation-3); }
.stat-card .stat-number {
  font-size: 40px;
  font-weight: 700;
  color: var(--md-primary);
  line-height: 1.1;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}
.stat-card .stat-label { font-size: 14px; font-weight: 500; color: var(--md-on-surface); margin-bottom: 6px; }
.stat-card .stat-caption { font-size: 12px; color: var(--md-on-surface-variant); }

/* ==========================================================================
   Origin timeline
   ========================================================================== */

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}
.timeline-item {
  border-radius: var(--md-shape-lg);
  padding: 24px 20px;
  border: 1px solid var(--md-outline-variant);
  background: var(--md-surface);
  position: relative;
}
.timeline-item .timeline-year {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--md-shape-full);
  background: var(--md-tertiary-container);
  color: var(--md-on-tertiary-container);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 14px;
}
.timeline-item h3 { margin: 0 0 8px 0; }
.timeline-item p { margin: 0; color: var(--md-on-surface-variant); font-size: 14px; }
.timeline-item .metric-line {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--md-outline-variant);
  font-size: 13px;
  font-weight: 500;
  color: var(--md-primary);
}

/* ==========================================================================
   Architecture / trade-off cards
   ========================================================================== */

.arch-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.arch-card {
  border-radius: var(--md-shape-lg);
  border: 1px solid var(--md-outline-variant);
  background: var(--md-surface);
  padding: 28px;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
}
.arch-card .arch-icon {
  width: 44px; height: 44px;
  border-radius: var(--md-shape-md);
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 18px;
}
.arch-card h3 { margin: 0 0 6px 0; }
.arch-card .arch-desc { color: var(--md-on-surface-variant); margin: 0 0 18px 0; }

.option-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-bottom: 16px;
}
.option-box {
  border-radius: var(--md-shape-md);
  border: 1px solid var(--md-outline-variant);
  padding: 14px 16px;
  background: var(--md-surface-container-lowest);
  position: relative;
}
.option-box.chosen {
  border: 1.5px solid var(--md-primary);
  background: var(--md-primary-container);
}
.option-box .option-title {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.option-box.chosen .option-title { color: var(--md-on-primary-container); }
.option-box p { font-size: 13px; color: var(--md-on-surface-variant); margin: 0; }
.option-box.chosen p { color: var(--md-on-primary-container); opacity: 0.85; }
.option-box .check-badge {
  font-size: 10px;
  background: var(--md-primary);
  color: var(--md-on-primary);
  border-radius: var(--md-shape-full);
  padding: 2px 8px;
  font-weight: 700;
  letter-spacing: 0.4px;
}

.tradeoff-callout {
  display: flex;
  gap: 12px;
  border-radius: var(--md-shape-md);
  border: 1px solid #F5C36A;
  background: var(--md-warning-container);
  color: var(--md-on-warning-container);
  padding: 14px 16px;
  font-size: 13px;
  line-height: 1.5;
}
.tradeoff-callout .warn-icon {
  flex-shrink: 0;
  width: 22px; height: 22px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 13px;
  border-radius: 50%;
  background: #7A5900;
  color: #FFDEA1;
}
.tradeoff-callout.info {
  background: var(--md-tertiary-container);
  color: var(--md-on-tertiary-container);
  border-color: #A9C7FF;
}
.tradeoff-callout.info .warn-icon { background: var(--md-tertiary); color: var(--md-on-tertiary); }

/* ==========================================================================
   Live dashboard
   ========================================================================== */

.dashboard-section { background: var(--md-surface-container-low); }

.dash-status-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  font-size: 13px;
  color: var(--md-on-surface-variant);
}
.dash-status-bar .live-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--md-shape-full);
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.dash-status-bar .live-badge .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: #146C63;
  animation: pulse-dot 2s infinite;
}

.dash-error-banner {
  display: none;
  align-items: center;
  gap: 10px;
  border-radius: var(--md-shape-md);
  padding: 12px 16px;
  background: var(--md-error-container);
  color: var(--md-on-error-container);
  font-size: 13px;
  margin-bottom: 20px;
}
.dash-error-banner.show { display: flex; }

.dash-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}
.dash-stat-card {
  border-radius: var(--md-shape-lg);
  padding: 28px;
  background: var(--md-surface-container-lowest);
  box-shadow: var(--md-elevation-2);
}
.dash-stat-card .dash-stat-label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--md-on-surface-variant);
  margin-bottom: 10px;
}
.dash-stat-card .dash-stat-value {
  font-size: 48px;
  font-weight: 700;
  color: var(--md-on-surface);
  letter-spacing: -1px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.dash-stat-card .dash-stat-value .unit { font-size: 20px; font-weight: 500; color: var(--md-on-surface-variant); }

.dash-table-card {
  border-radius: var(--md-shape-lg);
  background: var(--md-surface-container-lowest);
  box-shadow: var(--md-elevation-1);
  overflow: hidden;
}
.dash-table-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--md-outline-variant);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.md-table { width: 100%; border-collapse: collapse; }
.md-table thead th {
  text-align: left;
  padding: 14px 24px;
  font-size: 12px;
  font-weight: 500;
  color: var(--md-on-surface-variant);
  border-bottom: 1px solid var(--md-outline-variant);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.md-table tbody td {
  padding: 16px 24px;
  border-bottom: 1px solid var(--md-outline-variant);
  font-size: 14px;
  color: var(--md-on-surface);
}
.md-table tbody tr:last-child td { border-bottom: none; }
.md-table tbody tr { transition: background var(--md-duration-short); }
.md-table tbody tr:hover { background: var(--md-surface-container-low); }
.md-table .zone-name { font-weight: 500; }
.md-table .mono { font-family: 'Roboto Mono', monospace; color: var(--md-on-surface-variant); }
.skeleton-row td { color: var(--md-on-surface-variant); font-style: italic; }

/* ==========================================================================
   Changelog
   ========================================================================== */

.changelog-list { display: flex; flex-direction: column; gap: 16px; }
.changelog-entry {
  border-radius: var(--md-shape-lg);
  border: 1px solid var(--md-outline-variant);
  background: var(--md-surface);
  padding: 24px 28px;
}
.changelog-entry.latest { border: 1.5px solid var(--md-primary); background: var(--md-surface-container-low); }
.changelog-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}
.changelog-head .clog-date { color: var(--md-on-surface-variant); font-size: 13px; }
.changelog-title { margin: 4px 0 12px 0; }
.changelog-entry ul { margin: 0; padding-left: 20px; color: var(--md-on-surface-variant); font-size: 14px; line-height: 1.7; }
.changelog-entry ul li::marker { color: var(--md-primary); }

/* ==========================================================================
   Footer
   ========================================================================== */

footer {
  border-top: 1px solid var(--md-outline-variant);
  padding: 40px 0;
  background: var(--md-surface);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-brand { display: flex; align-items: center; gap: 10px; }
.footer-brand .mark {
  width: 26px; height: 26px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--md-primary), var(--md-tertiary));
}
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 13px; color: var(--md-on-surface-variant); text-decoration: none; }
.footer-links a:hover { color: var(--md-primary); }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { max-width: 520px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .timeline { grid-template-columns: repeat(2, 1fr); }
  .dash-stats { grid-template-columns: 1fr; }
}

@media (max-width: 800px) {
  .app-bar-nav { display: none; }
  .hero h1 { font-size: 44px; }
  .arch-card { grid-template-columns: 1fr; }
  .arch-card .arch-icon { display: none; }
}

@media (max-width: 600px) {
  .stats-grid { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr; }
  section { padding: 56px 0; }
  .hero { padding-top: 140px; }
  .hero h1 { font-size: 36px; }
  .md-table thead th:nth-child(3), .md-table tbody td:nth-child(3) { display: none; }
}