:root {
  --bg: #07080b;
  --bg-2: #0d1016;
  --panel: rgba(255, 255, 255, 0.055);
  --panel-2: rgba(255, 255, 255, 0.085);
  --line: rgba(255, 255, 255, 0.11);
  --line-strong: rgba(255, 255, 255, 0.18);
  --text: #f5f6f8;
  --muted: rgba(245, 246, 248, 0.68);
  --quiet: rgba(245, 246, 248, 0.48);
  --red: #e5352a;
  --red-2: #ff604f;
  --amber: #f5b047;
  --cyan: #54d6ff;
  --green: #5cf0a6;
  --max: 1180px;
  --radius: 8px;
  --radius-lg: 16px;
  --shadow: 0 28px 70px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    linear-gradient(180deg, rgba(229, 53, 42, 0.08), transparent 360px),
    linear-gradient(135deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 12px),
    var(--bg);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent 0 48%, rgba(229, 53, 42, 0.07) 48% 49%, transparent 49% 100%),
    radial-gradient(ellipse at 80% 0%, rgba(84, 214, 255, 0.08), transparent 38%);
  opacity: 0.65;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }

.wrap {
  width: min(100% - 32px, var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 8, 11, 0.88);
  backdrop-filter: blur(18px);
}

.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: max-content;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 7px;
  background: #fff;
  object-fit: cover;
}

.brand-parent {
  color: var(--quiet);
  font-size: 0.76rem;
  font-weight: 800;
}

.brand-name {
  font-size: 0.92rem;
}

.brand-x { color: var(--red-2); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.nav-links a {
  padding: 10px 0;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--text);
}

.lang-switcher {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.045);
}

.lang-switcher a {
  min-width: 36px;
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 900;
}

.lang-switcher a.active {
  color: #fff;
  background: rgba(229, 53, 42, 0.28);
}

.mobile-nav-toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  background: rgba(255, 255, 255, 0.055);
  cursor: pointer;
}

.mobile-nav-toggle span,
.mobile-nav-toggle::before,
.mobile-nav-toggle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.mobile-nav-toggle span {
  transform: translate(-50%, -50%);
}

.mobile-nav-toggle::before { transform: translate(-50%, calc(-50% - 6px)); }
.mobile-nav-toggle::after { transform: translate(-50%, calc(-50% + 6px)); }

.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 62px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(320px, 0.96fr);
  gap: 48px;
  align-items: center;
}

.eyebrow,
.section-kicker,
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--red-2);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.eyebrow::before,
.section-kicker::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--red);
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

.hero h1 {
  margin: 20px 0 0;
  max-width: 850px;
  font-size: clamp(3.25rem, 8vw, 6.9rem);
  line-height: 0.88;
  letter-spacing: 0;
  font-weight: 950;
}

.hero-subtitle {
  margin: 24px 0 0;
  max-width: 680px;
  color: var(--muted);
  font-size: clamp(1.06rem, 2vw, 1.24rem);
  line-height: 1.75;
}

.hero-position {
  margin: 18px 0 0;
  color: #fff;
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  font-weight: 850;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.btn {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 22px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-weight: 850;
  transition: 0.18s ease;
}

.btn-primary {
  color: #fff;
  background: var(--red);
  box-shadow: 0 14px 34px rgba(229, 53, 42, 0.22);
}

.btn-secondary {
  color: var(--text);
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.055);
}

.btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.08);
}

.hero-visual {
  position: relative;
  min-height: 560px;
}

.device-stage {
  position: absolute;
  inset: 0;
}

.phone {
  position: absolute;
  width: min(46%, 250px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 28px;
  padding: 8px;
  background: #0b0d12;
  box-shadow: var(--shadow);
}

.phone img { border-radius: 21px; }
.phone-main { left: 18%; top: 0; transform: rotate(-5deg); z-index: 3; }
.phone-side { right: 7%; top: 88px; transform: rotate(7deg); z-index: 2; opacity: 0.88; }

.helmet-float {
  position: absolute;
  left: 0;
  bottom: 18px;
  width: min(48%, 250px);
  padding: 12px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow);
  z-index: 4;
}

.telemetry-card {
  position: absolute;
  right: 0;
  bottom: 0;
  z-index: 5;
  width: min(58%, 330px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(14, 17, 24, 0.9);
  box-shadow: var(--shadow);
  padding: 18px;
}

.telemetry-row {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-weight: 750;
}

.telemetry-row:last-child { border-bottom: 0; }
.telemetry-row strong { color: #fff; }

.section {
  padding: 68px 0;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 0.62fr);
  gap: 38px;
  align-items: end;
  margin-bottom: 28px;
}

.section-heading h2,
.page-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(2.05rem, 4vw, 3.7rem);
  line-height: 1.02;
  letter-spacing: 0;
  font-weight: 930;
}

.section-heading p,
.page-hero p,
.lead {
  color: var(--muted);
  line-height: 1.78;
  font-size: 1.04rem;
}

.grid-3,
.grid-2,
.grid-4 {
  display: grid;
  gap: 16px;
}

.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card,
.feature-card,
.post-card,
.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.035));
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.22);
}

.card,
.feature-card,
.post-card {
  padding: 24px;
}

.card-accent {
  width: 42px;
  height: 4px;
  margin-bottom: 22px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--red), var(--amber));
}

.card h3,
.feature-card h3,
.post-card h3 {
  margin: 0 0 10px;
  font-size: 1.12rem;
  line-height: 1.25;
}

.card p,
.feature-card p,
.post-card p,
.legal p,
.legal li,
.prose p,
.prose li {
  color: var(--muted);
  line-height: 1.76;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.75fr);
  gap: 42px;
  align-items: center;
}

.media-panel {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.045);
}

.media-panel img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.problem-list,
.step-list,
.timeline,
.faq-list {
  display: grid;
  gap: 12px;
}

.problem-item,
.step-item,
.timeline-item,
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.045);
  padding: 18px;
}

.step-num,
.timeline-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 28px;
  margin-bottom: 12px;
  border-radius: 999px;
  color: #fff;
  background: rgba(229, 53, 42, 0.32);
  font-weight: 900;
  font-size: 0.82rem;
}

.logo-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.045);
  font-weight: 800;
  font-size: 0.9rem;
}

.notice {
  border-left: 3px solid var(--red);
  border-radius: var(--radius);
  background: rgba(229, 53, 42, 0.08);
  padding: 18px 20px;
  color: var(--muted);
  line-height: 1.7;
}

.page-hero {
  padding: 78px 0 34px;
}

.page-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.7fr) minmax(280px, 0.3fr);
  gap: 32px;
  align-items: start;
}

.panel {
  padding: 30px;
}

.legal h2,
.prose h2 {
  margin: 34px 0 10px;
  font-size: 1.3rem;
}

.legal h2:first-child,
.prose h2:first-child { margin-top: 0; }

.post-meta {
  color: var(--quiet);
  font-size: 0.9rem;
  font-weight: 800;
}

.post-card {
  display: flex;
  flex-direction: column;
  min-height: 250px;
}

.post-card .btn {
  margin-top: auto;
  align-self: flex-start;
}

.footer {
  padding: 42px 0 58px;
  color: var(--quiet);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 1fr);
  gap: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.footer-links {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-disclaimer {
  grid-column: 1 / -1;
  max-width: 980px;
  color: rgba(245, 246, 248, 0.45);
  line-height: 1.65;
  font-size: 0.86rem;
}

@media (max-width: 980px) {
  .nav { align-items: flex-start; padding: 16px 0; }
  .nav-right { width: 100%; justify-content: space-between; align-items: flex-start; }
  .nav-links { max-width: 650px; flex-wrap: wrap; gap: 6px 16px; }
  .hero-grid,
  .section-heading,
  .split,
  .page-grid,
  .footer-inner {
    grid-template-columns: 1fr;
  }
  .hero-visual { min-height: 500px; }
  .grid-4,
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-links { justify-content: flex-start; }
}

@media (max-width: 760px) {
  body.nav-locked { overflow: hidden; }
  .site-header { position: sticky; }
  .nav {
    min-height: 64px;
    align-items: center;
    padding: 10px 0;
    gap: 12px;
  }
  .brand {
    min-width: 0;
    letter-spacing: 0.04em;
  }
  .brand-name {
    max-width: calc(100vw - 116px);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.84rem;
  }
  .mobile-nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }
  .nav-right {
    display: none;
    width: 100%;
    align-items: stretch;
    gap: 14px;
    padding: 12px 0 6px;
  }
  .site-header.nav-open .nav-right {
    display: flex;
    flex-direction: column;
  }
  .nav-links {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    max-width: none;
    width: 100%;
  }
  .nav-links a {
    min-height: 44px;
    display: flex;
    align-items: center;
    padding: 0 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.045);
  }
  .lang-switcher {
    align-self: flex-start;
  }
}

@media (max-width: 640px) {
  .wrap { width: min(100% - 24px, var(--max)); }
  .hero { padding: 44px 0 40px; }
  .hero-grid { gap: 30px; }
  .hero h1 {
    font-size: clamp(2.65rem, 14vw, 4.4rem);
    line-height: 0.96;
  }
  .hero-position { font-size: 1.08rem; line-height: 1.45; }
  .hero-subtitle { font-size: 1rem; line-height: 1.65; }
  .hero-visual {
    min-height: auto;
    aspect-ratio: 0.86;
    max-height: 500px;
  }
  .phone { width: 52%; padding: 6px; border-radius: 22px; }
  .phone img { border-radius: 16px; }
  .phone-main { left: 2%; top: 0; }
  .phone-side { right: 0; top: 50px; }
  .helmet-float {
    width: 42%;
    left: 0;
    bottom: 16px;
    padding: 8px;
  }
  .telemetry-card {
    width: 70%;
    right: 0;
    bottom: 0;
    padding: 12px;
    font-size: 0.88rem;
  }
  .telemetry-row {
    gap: 8px;
    padding: 8px 0;
  }
  .section { padding: 44px 0; }
  .page-hero { padding: 46px 0 22px; }
  .section-heading { gap: 16px; margin-bottom: 20px; }
  .section-heading h2,
  .page-hero h1 {
    font-size: clamp(1.8rem, 9vw, 2.65rem);
    line-height: 1.08;
  }
  .cta-row { gap: 10px; margin-top: 24px; }
  .btn {
    width: 100%;
    min-height: 48px;
    padding: 0 16px;
    text-align: center;
  }
  .logo-strip .pill { max-width: 100%; }
  .grid-4,
  .grid-3,
  .grid-2 { grid-template-columns: 1fr; }
  .panel,
  .card,
  .feature-card,
  .post-card { padding: 20px; }
  .nav-links { font-size: 0.88rem; }
  .brand-parent { display: none; }
}

@media (max-width: 360px) {
  .wrap { width: min(100% - 20px, var(--max)); }
  .brand-mark { width: 30px; height: 30px; }
  .brand-name { font-size: 0.78rem; max-width: calc(100vw - 104px); }
  .nav-links { grid-template-columns: 1fr; }
  .eyebrow,
  .section-kicker,
  .status-pill {
    font-size: 0.68rem;
    letter-spacing: 0.1em;
  }
  .hero h1 { font-size: clamp(2.35rem, 13vw, 3.4rem); }
  .telemetry-card { width: 78%; font-size: 0.82rem; }
}