:root{
  --bg: #0b1020;
  --panel: rgba(255,255,255,0.06);
  --panel2: rgba(255,255,255,0.08);
  --border: rgba(255,255,255,0.14);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.70);
  --shadow: 0 18px 44px rgba(0,0,0,0.55);

  --brand: #6ee7ff;
  --brand2: #7c5cff;
  --ok: #35d07f;
  --warn: #ffd166;

  --chip: rgba(255,255,255,0.08);
  color-scheme: dark;
}

:root[data-theme="light"]{
  --bg: #f6f8fc;
  --panel: rgba(16, 24, 40, 0.06);
  --panel2: rgba(16, 24, 40, 0.08);
  --border: rgba(16, 24, 40, 0.16);
  --text: rgba(16, 24, 40, 0.92);
  --muted: rgba(16, 24, 40, 0.70);
  --shadow: 0 18px 44px rgba(16, 24, 40, 0.16);

  --chip: rgba(16, 24, 40, 0.08);
  color-scheme: light;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  color: var(--text);
  background:
    radial-gradient(1000px 680px at 16% 10%, rgba(124, 92, 255, 0.16), transparent 60%),
    radial-gradient(900px 680px at 92% 12%, rgba(110, 231, 255, 0.12), transparent 58%),
    radial-gradient(900px 650px at 55% 110%, rgba(53, 208, 127, 0.10), transparent 60%),
    var(--bg);
}

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

.container{ max-width: 1180px; margin: 0 auto; padding: 16px; }

.topbar{
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(11, 16, 32, 0.72);
  border-bottom: 1px solid rgba(255,255,255,0.10);
}
html[data-theme="light"] .topbar{
  background: rgba(246, 248, 252, 0.78);
  border-bottom: 1px solid rgba(16, 24, 40, 0.12);
}

.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
  padding: 12px 16px;
}

.brand{ display:flex; align-items:center; gap: 10px; }
.logo{
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--brand2), var(--brand));
  box-shadow: 0 18px 36px rgba(0,0,0,0.40);
}
.brandTitle{ font-weight: 1100; letter-spacing: 0.2px; }
.brandSub{ margin-top: 2px; font-size: 12px; font-weight: 800; color: var(--muted); }

.navLinks{ display:flex; gap: 8px; align-items:center; }
.navLinks a{
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid transparent;
  color: var(--text);
  font-weight: 900;
}
.navLinks a.active{
  border-color: rgba(110,231,255,0.35);
  background: rgba(110,231,255,0.10);
}

.navRight{ display:flex; align-items:center; gap: 8px; }

.btn{
  appearance:none;
  border: 1px solid var(--border);
  background: var(--panel2);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 14px;
  cursor: pointer;
  font-weight: 1000;
}
.btn.primary{
  border-color: rgba(110,231,255,0.38);
  background: rgba(110,231,255,0.16);
}
.btn.ghost{ background: transparent; }

.burger{
  display:none;
  width: 42px;
  height: 42px;
  border-radius: 14px;
}

@media (max-width: 900px){
  .burger{ display:inline-flex; align-items:center; justify-content:center; }
  .navLinks{ display:none; }
  .navLinks.open{
    display:flex;
    position:absolute;
    top: 62px;
    left: 16px;
    right: 16px;
    flex-direction:column;
    padding: 12px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: rgba(0,0,0,0.38);
    box-shadow: var(--shadow);
  }
  html[data-theme="light"] .navLinks.open{ background: rgba(255,255,255,0.76); }
  .navLinks.open a{ width:100%; }
}

.card{
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 14px;
}

.sectionTitle{ font-size: 16px; font-weight: 800; }
.sectionHint{ margin-top: 6px; color: var(--muted); font-size: 12px; font-weight: 600; }

.domainHeader{ display:flex; align-items:flex-start; justify-content:space-between; gap: 14px; }
@media (max-width: 720px){ .domainHeader{ flex-direction:column; } }

.domainViz{ width: 180px; flex: 0 0 180px; border-radius: 16px; padding: 10px; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); }
html[data-theme="light"] .domainViz{ background: rgba(16,24,40,0.03); border: 1px solid rgba(16,24,40,0.10); }
.domainViz svg{ display:block; width:100%; height:auto; color: var(--text); }

.hero{
  display:grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 16px;
  margin-top: 16px;
}
@media (max-width: 980px){ .hero{ grid-template-columns: 1fr; } }

.heroMain{ position: relative; overflow:hidden; min-height: 360px; }
.heroMain::before{
  content:"";
  position:absolute;
  inset: -100px -80px;
  background:
    radial-gradient(520px 320px at 25% 15%, rgba(110,231,255,0.18), transparent 60%),
    radial-gradient(640px 360px at 72% 10%, rgba(124,92,255,0.18), transparent 60%),
    radial-gradient(700px 520px at 60% 90%, rgba(53,208,127,0.10), transparent 70%);
  pointer-events:none;
}
.heroContent{ position:relative; z-index:2; }
.kicker{ color: var(--muted); font-weight: 900; font-size: 12px; letter-spacing: 0.5px; }
.heroTitle{ margin: 10px 0 0 0; font-size: 34px; font-weight: 1200; letter-spacing: -0.6px; line-height: 1.1; }
.heroText{ margin-top: 10px; color: var(--muted); font-weight: 800; line-height: 1.5; }

.heroCtas{ display:flex; gap: 10px; margin-top: 16px; flex-wrap: wrap; }

.chips{ display:flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.chip{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--chip);
  color: var(--text);
  font-weight: 900;
  font-size: 12px;
}

.split{
  display:grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: start;
  gap: 16px;
  margin-top: 16px;
}
@media (max-width: 980px){ .split{ grid-template-columns: 1fr; } }

.grid3{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
@media (max-width: 980px){ .grid3{ grid-template-columns: 1fr; } }

.tier{
  display:flex;
  flex-direction:column;
  gap: 10px;
  padding: 16px;
}
.tierTop{ display:flex; align-items:flex-start; justify-content:space-between; gap: 10px; }
.tierName{ font-weight: 1200; font-size: 16px; }
.tierBadge{
  border: 1px solid rgba(110,231,255,0.28);
  background: rgba(110,231,255,0.10);
  color: var(--text);
  padding: 6px 10px;
  border-radius: 999px;
  font-weight: 1000;
  font-size: 12px;
}
.tierPrice{ font-weight: 1300; font-size: 28px; letter-spacing: -0.5px; }
.tierSmall{ color: var(--muted); font-weight: 800; font-size: 12px; }

.list{ margin:0; padding-left: 18px; color: var(--muted); font-weight: 600; font-size: 14px; line-height: 1.6; }
.list li{ margin: 6px 0; }

.tableWrap{ overflow:auto; border-radius: 16px; border: 1px solid var(--border); }
.table{
  width: 100%;
  border-collapse: collapse;
  min-width: 820px;
  background: rgba(0,0,0,0.12);
}
html[data-theme="light"] .table{ background: rgba(16,24,40,0.04); }
.table th, .table td{
  padding: 12px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  text-align:left;
  vertical-align: top;
}
html[data-theme="light"] .table th,
html[data-theme="light"] .table td{ border-bottom: 1px solid rgba(16,24,40,0.10); }
.table th{ font-size: 12px; color: var(--muted); font-weight: 1000; }

.kpi{ display:flex; gap: 10px; flex-wrap: wrap; margin-top: 10px; }
.kpi .chip{ border-color: rgba(53,208,127,0.24); background: rgba(53,208,127,0.10); }

.field{ display:flex; flex-direction: column; gap: 6px; min-width: 180px; }
.field span{ color: var(--muted); font-size: 12px; font-weight: 900; }
.field input, .field select, textarea{
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--panel2);
  color: var(--text);
  padding: 10px 12px;
  font-weight: 900;
  outline: none;
}
textarea{ min-height: 120px; resize: vertical; }

.formGrid{ display:grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 560px){ .formGrid{ grid-template-columns: 1fr; } }

.notice{ margin-top: 10px; color: var(--muted); font-size: 12px; font-weight: 800; }

.featureList{ display:grid; grid-template-columns: 1fr; gap: 12px; }

.featureHeader{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap: 12px;
}

@media (max-width: 720px){
  .featureHeader{ flex-direction:column; }
}

.featureName{ font-weight: 1200; }
.featureDesc{ margin-top: 6px; color: var(--muted); font-weight: 800; line-height: 1.45; }

.vehicleCard{
  border: 1px solid var(--border);
  background: var(--panel2);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  width: 220px;
}

.vehicleImg{ display:block; width:100%; height: 110px; object-fit: cover; background: rgba(0,0,0,0.12); }

.vehicleName{ padding: 10px 12px; font-weight: 1000; color: var(--text); font-size: 13px; }

@media (max-width: 980px){
  .vehicleCard{ width: 100%; }
  .vehicleImg{ height: 120px; }
}

.techComponents{ display:flex; flex-direction:column; gap: 10px; }

.techComp{
  padding: 12px;
  border: 1px solid rgba(255, 244, 220, 0.34);
  border-radius: 16px;
  background: rgba(255,255,255,0.040);
  box-shadow: 0 12px 28px rgba(0,0,0,0.28);
}
html[data-theme="light"] .techComp{
  border: 1px solid rgba(154, 122, 60, 0.24);
  background: rgba(255,255,255,0.72);
  box-shadow: 0 10px 24px rgba(16,24,40,0.06);
}

.techCompTop{ display:flex; align-items:flex-start; justify-content:space-between; gap: 12px; }

@media (max-width: 720px){
  .techCompTop{ flex-direction:column; }
}

.techCompName{ font-weight: 800; }
.techCompSummary{ margin-top: 8px; color: var(--muted); font-weight: 600; font-size: 14px; line-height: 1.6; }

.techDiagram{ width:100%; overflow:hidden; border-radius: 12px; padding: 10px; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); }
html[data-theme="light"] .techDiagram{ background: rgba(16,24,40,0.03); border: 1px solid rgba(16,24,40,0.10); }

.techDiagram svg{ display:block; width:100%; height:auto; color: var(--text); }

.techBox{ fill: rgba(255,255,255,0.06); stroke: rgba(255,255,255,0.22); stroke-width: 2; }
.techBoxAlt{ fill: rgba(255,255,255,0.03); stroke: rgba(255,255,255,0.14); stroke-width: 2; }
html[data-theme="light"] .techBox{ fill: rgba(16,24,40,0.03); stroke: rgba(16,24,40,0.18); }
html[data-theme="light"] .techBoxAlt{ fill: rgba(16,24,40,0.02); stroke: rgba(16,24,40,0.12); }

.techArrow{ fill: none; stroke: currentColor; stroke-width: 2.5; opacity: 0.85; }

.techLabel{ font-size: 18px; font-weight: 1100; fill: var(--text); }
.techSubLabel{ font-size: 14px; font-weight: 900; fill: var(--muted); }

@media (max-width: 720px){
  .techDiagram{ padding: 8px; }
  .techLabel{ font-size: 16px; }
  .techSubLabel{ font-size: 12px; }
}

.techMore{
  margin-top: 10px;
  padding: 12px;
  border: 1px solid rgba(255, 244, 220, 0.22);
  border-radius: 14px;
  background: rgba(255,255,255,0.06);
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
  line-height: 1.6;
}
html[data-theme="light"] .techMore{ border: 1px solid rgba(154, 122, 60, 0.18); background: rgba(255,255,255,0.78); }

.techMoreGrid{ display:grid; grid-template-columns: 1fr 170px; gap: 14px; align-items:start; }
@media (max-width: 720px){ .techMoreGrid{ grid-template-columns: 1fr; } }

.techMoreViz{ border-radius: 12px; background: rgba(255,255,255,0.10); border: 1px solid rgba(255,255,255,0.16); padding: 10px; }
html[data-theme="light"] .techMoreViz{ background: rgba(255,255,255,0.80); border: 1px solid rgba(16,24,40,0.10); }

.techMoreViz svg{ display:block; width:100%; height:auto; color: var(--text); }

.techIconStroke{ stroke: currentColor; stroke-width: 2.5; fill: none; opacity: 0.85; }
.techIconFill{ fill: rgba(255,255,255,0.06); stroke: rgba(255,255,255,0.22); stroke-width: 2; }
html[data-theme="light"] .techIconFill{ fill: rgba(16,24,40,0.03); stroke: rgba(16,24,40,0.18); }

.footer{
  margin-top: 18px;
  padding: 18px 16px;
  border-top: 1px solid rgba(255,255,255,0.10);
  color: var(--muted);
  font-weight: 800;
  font-size: 12px;
}
html[data-theme="light"] .footer{ border-top: 1px solid rgba(16,24,40,0.12); }

.small{ font-size: 12px; color: var(--muted); font-weight: 800; }