/* ============================================================
   TerraAgent Robotics — Shared Design System
   Derived from v5.0-big-atv-autonomous-platform-standalone
   ============================================================ */

:root {
  --bg: #0e1013;
  --panel: #14171c;
  --panel2: #181c22;
  --line: #dde3ec;
  --line-dim: #6b7480;
  --accent: #ffd24d;
  --text: #c9d1dc;
  --text-dim: #8a94a1;
  --border: #232830;
  --border-ui: #333a44;
  --radius: 0px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

/* ---- Typography ---- */
.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 32px; }

.cat {
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.35em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #f2f5f9;
  margin: 14px 0 8px;
}

h2 {
  font-size: 24px;
  color: #f2f5f9;
  letter-spacing: 0.1em;
  margin: 10px 0 24px;
  font-weight: 600;
}

.sub {
  color: var(--text-dim);
  font-size: 16px;
  max-width: 640px;
}

.sec-tag {
  color: var(--text-dim);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  border-top: 1px solid #262b33;
  padding-top: 14px;
}

section { padding: 64px 0 0; }

/* ---- Brand Banner ---- */
.brand-line {
  margin: 36px 0 0;
  border: 1px solid var(--accent);
  background: rgba(255,210,77,0.05);
  padding: 18px 22px;
  font-size: 13.5px;
  color: var(--text);
}
.brand-line b { color: var(--accent); letter-spacing: 0.08em; }

/* ---- SVG System ---- */
svg { display: block; width: 100%; height: auto; }
svg * { vector-effect: non-scaling-stroke; }
.stroke { fill: none; stroke: var(--line); stroke-width: 1.6; stroke-linecap: square; stroke-linejoin: miter; }
.stroke-dim { fill: none; stroke: var(--line-dim); stroke-width: 1.2; stroke-linecap: square; }
.stroke-acc { fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-linecap: square; }
.dash { stroke-dasharray: 6 5; }
.node { fill: var(--accent); stroke: none; }
.svglabel { fill: var(--line-dim); font-family: ui-monospace, Menlo, monospace; font-size: 9px; letter-spacing: 0.12em; }

/* ---- Components ---- */
.hero-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 36px;
}

.modes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.mode-card {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 26px;
}
.mode-card h3 {
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 16px;
  font-weight: 600;
}
.mode-card p { font-size: 14px; color: var(--text-dim); margin-top: 16px; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 24px;
}
.card .icon { width: 120px; margin: 0 auto 18px; }
.card h3 {
  font-size: 16px;
  color: #f2f5f9;
  letter-spacing: 0.15em;
  font-weight: 600;
  margin-bottom: 4px;
}
.card .en {
  color: var(--accent);
  font-size: 11px;
  letter-spacing: 0.2em;
  display: block;
  margin-bottom: 10px;
}
.card p { font-size: 13.5px; color: var(--text-dim); }

.states {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.state-card {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 0 0 18px;
}
.state-card .state-img {
  width: 100%;
  display: block;
  aspect-ratio: 16/9;
  object-fit: cover;
  background: var(--panel2);
}
.state-card h3 {
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin: 16px 20px 6px;
}
.state-card p { font-size: 13px; color: var(--text-dim); margin: 0 20px; }

/* ---- Tables ---- */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
td {
  border: 1px solid var(--border);
  padding: 12px 16px;
}
td:first-child {
  color: var(--text-dim);
  font-size: 13px;
  letter-spacing: 0.15em;
  width: 180px;
  background: var(--panel);
}

/* ---- Navigation ---- */
nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(14, 16, 19, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
nav .wrap {
  display: flex;
  align-items: center;
  height: 56px;
  gap: 0;
}
nav .logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  margin-right: 32px;
}
nav .nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}
nav .nav-links a,
nav .nav-links .dropdown > span {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.08em;
  padding: 8px 12px;
  border-radius: 4px;
  white-space: nowrap;
  cursor: pointer;
}
nav .nav-links a:hover,
nav .nav-links .dropdown:hover > span {
  color: var(--text);
}
nav .cta-btn {
  background: var(--accent);
  color: #0e1013;
  padding: 7px 16px;
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.08em;
}
nav .cta-btn:hover { opacity: 0.9; }

/* Dropdown */
nav .dropdown {
  position: relative;
}
nav .dropdown > span::after {
  content: ' ▾';
  font-size: 9px;
}
nav .dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--panel);
  border: 1px solid var(--border);
  min-width: 200px;
  z-index: 51;
}
nav .dropdown:hover .dropdown-menu { display: block; }
nav .dropdown-menu a {
  display: block;
  padding: 10px 16px;
  font-size: 13px;
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
}
nav .dropdown-menu a:last-child { border-bottom: none; }
nav .dropdown-menu a:hover {
  color: var(--text);
  background: var(--panel2);
}
nav .dropdown-menu a .flag {
  color: var(--accent);
  font-size: 10px;
  letter-spacing: 0.2em;
  margin-left: 6px;
}

/* Lang switcher in nav */
nav .lang-switch {
  display: flex;
  gap: 2px;
  margin-left: 16px;
}
nav .lang-switch button {
  background: none;
  border: 1px solid var(--border-ui);
  color: var(--text);
  padding: 4px 10px;
  font-size: 11px;
  font-family: inherit;
  cursor: pointer;
  letter-spacing: 0.08em;
}
nav .lang-switch button.active,
nav .lang-switch button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ---- Footer ---- */
footer {
  margin-top: 80px;
  border-top: 1px solid var(--border);
  padding: 28px 0 48px;
  font-size: 12.5px;
  color: var(--text-dim);
}
footer .wrap { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
footer a { color: var(--accent); text-decoration: none; }
footer a:hover { text-decoration: underline; }

/* ---- Chips / Badges ---- */
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin: 16px 0; }
.chip {
  border: 1px solid var(--border-ui);
  color: var(--text-dim);
  font-size: 11px;
  padding: 5px 12px;
  letter-spacing: 0.1em;
}

/* ---- Section Alternate ---- */
.section-alt {
  padding: 64px 0 0;
  border-top: 1px solid #262b33;
}

/* ---- Note / Info block ---- */
.note {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 12px;
}
.note a { color: var(--accent); }

/* ---- Page Header ---- */
.page-header { padding: 56px 0 0; }

/* ---- Scenarios Grid ---- */
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.scenario-card {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 28px 24px;
}
.scenario-card h3 {
  font-size: 15px;
  color: #f2f5f9;
  letter-spacing: 0.1em;
  font-weight: 600;
  margin-bottom: 8px;
}
.scenario-card p { font-size: 13px; color: var(--text-dim); }
.scenario-card .group-tag {
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

/* ---- Tech Stack ---- */
.tech-row {
  display: flex;
  border-top: 1px solid #262b33;
  gap: 0;
}
.tech-row:last-child { border-bottom: 1px solid #262b33; }
.tech-row .tech-layer {
  padding: 18px 20px;
  flex-shrink: 0;
  min-width: 80px;
  font-family: ui-monospace, Menlo, monospace;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.15em;
}
.tech-row .tech-name {
  padding: 18px 20px;
  flex-shrink: 0;
  width: 200px;
  font-weight: 700;
  color: #f2f5f9;
}
.tech-row .tech-desc {
  padding: 18px 20px;
  flex: 1;
  color: var(--text-dim);
  font-size: 13px;
}
.tech-row .tech-owner {
  padding: 18px 20px;
  flex-shrink: 0;
  width: 180px;
  font-family: ui-monospace, Menlo, monospace;
  font-size: 11px;
  text-align: right;
}
.tech-owner.terra { color: var(--accent); }
.tech-owner.rj { color: #9d98b8; }

/* ---- Phase Grid ---- */
.phase-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 2px;
  background: var(--line-dim);
  border: 1px solid var(--line-dim);
}
.phase-cell {
  background: var(--bg);
  padding: 18px 10px;
  text-align: center;
}
.phase-cell.rj { background: var(--panel2); }
.phase-cell .pn {
  font-family: ui-monospace, Menlo, monospace;
  font-size: 9px;
  color: var(--text-dim);
  letter-spacing: 0.15em;
}
.phase-cell .pt {
  font-size: 11px;
  color: #f2f5f9;
  margin: 6px 0;
  min-height: 32px;
  line-height: 1.4;
}
.phase-cell .po {
  font-family: ui-monospace, Menlo, monospace;
  font-size: 9px;
  padding: 2px 8px;
  display: inline-block;
}
.po.terra { background: rgba(255,210,77,0.12); color: var(--accent); }
.po.rj { background: rgba(157,152,184,0.12); color: #9d98b8; }

/* ---- Link Cards ---- */
.link-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 20px; }
.link-card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 20px 22px;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.2s;
}
.link-card:hover { border-color: var(--accent); }
.link-card .lc-tag { font-size: 10px; color: var(--accent); letter-spacing: 0.2em; text-transform: uppercase; }
.link-card .lc-title { font-size: 15px; font-weight: 600; color: #f2f5f9; margin: 6px 0 4px; }
.link-card .lc-desc { font-size: 12px; color: var(--text-dim); }

/* ---- CTA Section ---- */
.cta-section {
  text-align: center;
  padding: 72px 0;
}
.cta-section h2 {
  font-size: 28px;
  margin-bottom: 12px;
}
.cta-section p {
  color: var(--text-dim);
  font-size: 15px;
  max-width: 560px;
  margin: 0 auto 24px;
}
.cta-btn-lg {
  display: inline-block;
  background: var(--accent);
  color: #0e1013;
  padding: 12px 28px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.1em;
}
.cta-btn-lg:hover { opacity: 0.9; }

/* ---- Highlight Label ---- */
.hl { color: var(--accent); }

/* ---- SVG Animations ---- */
@media (prefers-reduced-motion: no-preference) {
  @keyframes ta-dash { to { stroke-dashoffset: -22; } }
  svg .dash { animation: ta-dash 1.4s linear infinite; }

  @keyframes ta-pulse { 0%,100% { opacity: 1; } 50% { opacity: .45; } }
  svg .f-acc, svg .stroke-acc, svg .node { animation: ta-pulse 2.2s ease-in-out infinite; }

  @keyframes ta-tread { to { stroke-dashoffset: -38; } }
  svg .tread { animation: ta-tread 1.8s linear infinite; }

  @keyframes ta-tread-s { to { stroke-dashoffset: -22; } }
  svg .tread-s { animation: ta-tread-s 1.3s linear infinite; }

  @keyframes ta-bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-4px); } }
  svg .drone-bob { animation: ta-bob 2.6s ease-in-out infinite; }

  @keyframes ta-layer { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-4px); } }
  svg .layerf { animation: ta-layer 4s ease-in-out infinite; }
}

/* ---- Responsive ---- */
@media (max-width: 820px) {
  .grid, .scenario-grid { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .modes, .states { grid-template-columns: 1fr; }
  .link-cards { grid-template-columns: 1fr; }
  .tech-row { flex-wrap: wrap; }
  .tech-row .tech-owner { width: 100%; text-align: left; }
  .phase-grid { grid-template-columns: repeat(3, 1fr); }
  nav .nav-links a { padding: 6px 8px; font-size: 12px; }
  nav .logo-link { margin-right: 16px; }
}

@media (max-width: 560px) {
  .grid, .grid-2, .scenario-grid, .states { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .phase-grid { grid-template-columns: repeat(2, 1fr); }
  .wrap { padding: 0 16px; }
  nav .wrap { flex-wrap: wrap; height: auto; padding: 8px 16px; }
}

/* ---- Media Placeholders ---- */
.media-placeholder {
  width: 100%;
  background: var(--panel);
  border: 1px dashed var(--line-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: var(--text-dim);
  font-family: ui-monospace, Menlo, monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  min-height: 120px;
  gap: 8px;
}
.media-placeholder.video { aspect-ratio: 16/9; }
.media-placeholder.hero { aspect-ratio: 21/9; min-height: 280px; }
.media-placeholder.square { aspect-ratio: 4/3; }
.media-placeholder.wide { aspect-ratio: 2/1; }
.media-placeholder .ph-icon {
  font-size: 28px;
  opacity: 0.4;
}
.media-placeholder .ph-label {
  font-size: 12px;
  letter-spacing: 0.15em;
  opacity: 0.7;
}
.media-placeholder .ph-detail {
  font-size: 10px;
  opacity: 0.45;
}

/* ---- Flat-design fills (for vehicle SVGs) ---- */
.f-body { fill: #8fa3b0; }
.f-body2 { fill: #697d8c; }
.f-dark { fill: #23272d; }
.f-white { fill: #e9edf1; }
.f-tire { fill: #17191d; }
.f-hub { fill: #98a2ab; }
.f-acc { fill: #ffd24d; }

/* === Page-specific styles === */

  .hero-home {
    padding: 72px 0 52px;
    border-bottom: 1px solid var(--border);
    background: radial-gradient(1100px 400px at 78% -10%, rgba(255,210,77,.08), transparent),
                radial-gradient(900px 380px at 6% 0%, rgba(255,210,77,.05), transparent);
  }
  .hero-home h1 { font-size: clamp(32px, 5.5vw, 52px); line-height: 1.12; }
  .hero-home h1 .hl { color: var(--accent); }
  .positioning {
    font-size: 18px;
    color: var(--text);
    max-width: 700px;
    margin: 18px 0 8px;
    line-height: 1.6;
  }
  .positioning b { color: var(--accent); }
  .cap-hierarchy { margin-top: 32px; }
  .cap-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid #262b33;
  }
  .cap-row:last-child { border-bottom: none; }
  .cap-pct {
    font-family: ui-monospace, Menlo, monospace;
    font-size: 18px;
    font-weight: 700;
    color: var(--accent);
    width: 80px;
    flex-shrink: 0;
  }
  .cap-name {
    font-size: 16px;
    font-weight: 600;
    color: #f2f5f9;
    width: 160px;
    flex-shrink: 0;
    letter-spacing: 0.06em;
  }
  .cap-desc { font-size: 13px; color: var(--text-dim); flex: 1; }
  .cap-link {
    font-size: 12px;
    color: var(--accent);
    text-decoration: none;
    letter-spacing: 0.1em;
    flex-shrink: 0;
  }
  .cap-link:hover { text-decoration: underline; }
  .problem-statement {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 32px 36px;
    margin-top: 24px;
  }
  .problem-statement h3 {
    font-size: 14px;
    color: var(--accent);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 12px;
    font-weight: 600;
  }
  .problem-statement p { font-size: 14px; color: var(--text-dim); max-width: 720px; }
  .prod-overview { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 20px; }
  .prod-card {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 24px 20px;
    text-decoration: none;
    color: var(--text);
    transition: border-color 0.2s;
  }
  .prod-card:hover { border-color: var(--accent); }
  .prod-card .flag {
    font-family: ui-monospace, Menlo, monospace;
    font-size: 9px;
    color: var(--accent);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 8px;
  }
  .prod-card h3 { font-size: 16px; color: #f2f5f9; letter-spacing: 0.1em; margin-bottom: 6px; }
  .prod-card p { font-size: 12px; color: var(--text-dim); line-height: 1.6; }

  @media (max-width: 820px) {
    .prod-overview { grid-template-columns: 1fr 1fr; }
    .cap-name { width: 120px; }
  }
  @media (max-width: 560px) {
    .prod-overview { grid-template-columns: 1fr; }
    .cap-row { flex-wrap: wrap; }
  }



  .hero-atv {
    padding: 56px 0 0;
    border-bottom: 1px solid var(--border);
    background: radial-gradient(1000px 380px at 70% -5%, rgba(255,210,77,.10), transparent);
  }
  .brand-note {
    border: 1px solid #9d98b8;
    background: rgba(157,152,184,0.04);
    padding: 14px 20px;
    font-size: 13px;
    color: var(--text-dim);
    margin: 24px 0;
  }
  .brand-note b { color: #c9b8f0; }
  .state-placeholder {
    width: 100%;
    aspect-ratio: 16/10;
    background: var(--panel2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dim);
    font-family: ui-monospace, Menlo, monospace;
    font-size: 12px;
    letter-spacing: 0.15em;
  }
  .sensor-config {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 20px;
  }
  .sensor-tier {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 24px;
  }
  .sensor-tier h3 {
    font-size: 13px;
    color: var(--accent);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 12px;
  }
  .sensor-tier ul {
    list-style: none;
    padding: 0;
  }
  .sensor-tier li {
    font-size: 13px;
    color: var(--text-dim);
    padding: 4px 0;
  }
  .sensor-tier li::before { content: '· '; color: var(--accent); }



  .hero-atv {
    padding: 56px 0 0;
    border-bottom: 1px solid var(--border);
    background: radial-gradient(1000px 380px at 70% -5%, rgba(255,210,77,.10), transparent);
  }
  .tristate-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 24px; }
  .tristate-card {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 28px 22px;
  }
  .tristate-card h3 {
    font-size: 13px;
    color: var(--accent);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 12px;
    font-weight: 600;
  }
  .tristate-card p { font-size: 13px; color: var(--text-dim); line-height: 1.7; }
  .dealer-map {
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--panel);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dim);
    font-family: ui-monospace, Menlo, monospace;
    font-size: 12px;
    letter-spacing: 0.15em;
    margin-top: 20px;
  }
  .dealer-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 16px; }
  .dealer-region { background: var(--panel); border: 1px solid var(--border); padding: 16px; }
  .dealer-region h4 { font-size: 12px; color: var(--accent); letter-spacing: 0.15em; margin-bottom: 6px; }
  .dealer-region p { font-size: 12px; color: var(--text-dim); }
  .atv-diagram { position: relative; }
  .atv-diagram .part { cursor: pointer; transition: fill 0.25s, stroke 0.25s, opacity 0.25s; }
  .atv-diagram .part:hover { filter: brightness(1.5); }
  .atv-diagram .mode-btn { background: var(--panel); border: 1px solid var(--border-ui); color: var(--text-dim); padding: 8px 16px; font-size: 12px; font-family: ui-monospace, Menlo, monospace; cursor: pointer; letter-spacing: 0.1em; }
  .atv-diagram .mode-btn.active.atv-mode { border-color: #ffd24d; color: #ffd24d; }
  .atv-diagram .mode-btn.active.fpv-mode { border-color: #5ad1c9; color: #5ad1c9; }
  .atv-diagram .mode-btn.active.follow-mode { border-color: #4aa3ff; color: #4aa3ff; }
  .atv-diagram .highlight-zone { opacity: 0; transition: opacity 0.3s; }
  .atv-diagram .highlight-zone.show { opacity: 1; }
  .atv-diagram .tooltip { position: absolute; background: var(--panel); border: 1px solid var(--accent); padding: 8px 14px; font-size: 11px; color: var(--text); pointer-events: none; opacity: 0; transition: opacity 0.2s; z-index: 5; max-width: 200px; }
  .atv-diagram .tooltip.visible { opacity: 1; }
  @media (max-width: 820px) { .tristate-grid { grid-template-columns: 1fr; } .dealer-list { grid-template-columns: 1fr 1fr; } }
  @media (max-width: 560px) { .dealer-list { grid-template-columns: 1fr; } }



  .hero-ugv {
    padding: 56px 0 0;
    border-bottom: 1px solid var(--border);
    background: radial-gradient(1000px 380px at 70% -5%, rgba(255,210,77,.10), transparent);
  }
  .size-compare { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 24px; }
  .size-card {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 28px 22px;
    text-align: center;
  }
  .size-card .sz { font-family: ui-monospace, Menlo, monospace; font-size: 28px; font-weight: 700; color: var(--accent); }
  .size-card .sz-label { font-size: 12px; color: var(--text-dim); letter-spacing: 0.15em; margin: 4px 0 12px; }
  .size-card p { font-size: 12px; color: var(--text-dim); line-height: 1.6; }
  .case-study {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 28px;
    margin-top: 16px;
  }
  .case-study h3 { font-size: 14px; color: var(--accent); letter-spacing: 0.15em; margin-bottom: 10px; }
  .case-study p { font-size: 13px; color: var(--text-dim); line-height: 1.7; }
  .case-study .case-note { font-size: 11px; color: #6b7480; margin-top: 10px; font-style: italic; }
  /* Interactive vehicle diagram */
  .ugv-diagram { position: relative; }
  .ugv-diagram .part { cursor: pointer; transition: fill 0.25s, stroke 0.25s; }
  .ugv-diagram .part:hover { filter: brightness(1.5); }
  .ugv-diagram .size-tabs { display: flex; gap: 2px; margin-bottom: 14px; }
  .ugv-diagram .size-tab { background: var(--panel); border: 1px solid var(--border-ui); color: var(--text-dim); padding: 8px 18px; font-size: 12px; font-family: ui-monospace, Menlo, monospace; cursor: pointer; letter-spacing: 0.1em; }
  .ugv-diagram .size-tab.active { border-color: var(--accent); color: var(--accent); }
  .ugv-diagram .tooltip { position: absolute; background: var(--panel); border: 1px solid var(--accent); padding: 8px 14px; font-size: 11px; color: var(--text); pointer-events: none; opacity: 0; transition: opacity 0.2s; z-index: 5; max-width: 200px; }
  .ugv-diagram .tooltip.visible { opacity: 1; }
  @media (max-width: 820px) { .size-compare { grid-template-columns: 1fr; } }



  .hero-sol {
    padding: 56px 0 0;
    border-bottom: 1px solid var(--border);
    background: radial-gradient(1000px 380px at 70% -5%, rgba(255,210,77,.10), transparent);
  }
  .solution-block {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 28px;
    margin-top: 20px;
  }
  .solution-block h3 {
    font-size: 14px;
    color: var(--accent);
    letter-spacing: 0.15em;
    margin-bottom: 12px;
    font-weight: 600;
  }
  .solution-block p { font-size: 13px; color: var(--text-dim); line-height: 1.7; }
  .solution-block ul { list-style: none; padding: 0; margin-top: 8px; }
  .solution-block li { font-size: 13px; color: var(--text-dim); padding: 3px 0; }
  .solution-block li::before { content: '→ '; color: var(--accent); font-family: ui-monospace, Menlo, monospace; }
  .tier-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 16px; }
  .tier-card {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 20px;
    text-align: center;
  }
  .tier-card .tier-num {
    font-family: ui-monospace, Menlo, monospace;
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
    display: block;
  }
  .tier-card .tier-label { font-size: 11px; color: var(--text-dim); letter-spacing: 0.2em; margin-top: 4px; }
  .tier-card p { font-size: 12px; color: var(--text-dim); margin-top: 8px; }
  @media (max-width: 820px) { .tier-grid { grid-template-columns: 1fr; } }



  .hero-tech {
    padding: 56px 0 0;
    border-bottom: 1px solid var(--border);
    background: radial-gradient(1000px 380px at 70% -5%, rgba(255,210,77,.08), transparent);
  }
  .layer-detail {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 32px;
    margin-top: 20px;
  }
  .layer-detail h3 {
    font-size: 16px;
    color: var(--accent);
    letter-spacing: 0.15em;
    margin-bottom: 8px;
  }
  .layer-detail .layer-owner {
    font-family: ui-monospace, Menlo, monospace;
    font-size: 10px;
    letter-spacing: 0.2em;
    margin-bottom: 16px;
  }
  .layer-detail p { font-size: 13px; color: var(--text-dim); line-height: 1.8; max-width: 800px; }
  .layer-detail ul { list-style: none; padding: 0; margin-top: 12px; }
  .layer-detail li { font-size: 13px; color: var(--text-dim); padding: 4px 0; }
  .layer-detail li::before { content: '· '; color: var(--accent); }



  .hero-sc { padding: 56px 0 0; border-bottom: 1px solid var(--border); background: radial-gradient(1000px 380px at 70% -5%, rgba(255,210,77,.08), transparent); }
  .sc-group { margin-top: 48px; }
  .sc-group h2 { font-size: 20px; margin-bottom: 16px; padding-bottom: 8px; border-bottom: 1px solid #262b33; }
  .sc-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .sc-card { background: var(--panel); border: 1px solid var(--border); padding: 24px; }
  .sc-card h3 { font-size: 14px; color: #f2f5f9; letter-spacing: 0.08em; margin-bottom: 10px; }
  .sc-card .pain { font-size: 11px; color: #ff4b55; letter-spacing: 0.1em; margin-bottom: 6px; text-transform: uppercase; }
  .sc-card .solution { font-size: 12px; color: var(--accent); margin-bottom: 8px; }
  .sc-card .products { font-size: 11px; color: var(--text-dim); }
  @media (max-width: 560px) { .sc-grid { grid-template-columns: 1fr; } }



  .hero-about { padding: 56px 0 0; border-bottom: 1px solid var(--border); background: radial-gradient(1000px 380px at 70% -5%, rgba(255,210,77,.08), transparent); }
  .brand-rel { background: var(--panel); border: 1px solid var(--border); padding: 32px; margin-top: 24px; }
  .brand-rel h3 { font-size: 16px; color: var(--accent); letter-spacing: 0.12em; margin-bottom: 16px; }
  .brand-rel p { font-size: 14px; color: var(--text-dim); line-height: 1.8; }
  .brand-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 20px; }
  .brand-col { background: var(--panel); border: 1px solid var(--border); padding: 24px; }
  .brand-col h4 { font-size: 14px; color: #f2f5f9; letter-spacing: 0.1em; margin-bottom: 10px; }
  .brand-col p { font-size: 13px; color: var(--text-dim); line-height: 1.7; }
  .brand-col.terra { border-left: 3px solid var(--accent); }
  .brand-col.rj { border-left: 3px solid #9d98b8; }
  .contact-form { background: var(--panel); border: 1px solid var(--border); padding: 36px; margin-top: 24px; max-width: 600px; }
  .contact-form label { display: block; font-size: 12px; color: var(--text-dim); letter-spacing: 0.1em; margin: 16px 0 6px; }
  .contact-form input, .contact-form textarea, .contact-form select {
    width: 100%; background: var(--bg); border: 1px solid var(--border-ui); color: var(--text); padding: 10px 14px; font-size: 14px; font-family: inherit;
  }
  .contact-form input:focus, .contact-form textarea:focus, .contact-form select:focus { outline: none; border-color: var(--accent); }
  .contact-form button { background: var(--accent); color: #0e1013; border: none; padding: 12px 28px; font-size: 14px; font-weight: 700; cursor: pointer; letter-spacing: 0.1em; margin-top: 20px; }
  .contact-form button:hover { opacity: 0.9; }
  @media (max-width: 820px) { .brand-cols { grid-template-columns: 1fr; } }


/* === Page visibility (SPA-only, disabled for WordPress) === */
/* .page { display: none; } — removed: conflicts with WP body class */
/* .page.active { display: block; } — removed: conflicts with WP body class */