:root {
  --bg: #06080b;
  --bg-soft: #0d1117;
  --panel: rgba(15, 19, 24, 0.82);
  --panel-strong: rgba(18, 23, 29, 0.94);
  --border: rgba(255, 255, 255, 0.09);
  --text: #f1f4f5;
  --muted: #95a1aa;
  --amber: #f4a11a;
  --amber-soft: rgba(244, 161, 26, 0.16);
  --red: #ff4939;
  --red-soft: rgba(255, 73, 57, 0.15);
  --mint: #90ffd6;
  --mint-soft: rgba(144, 255, 214, 0.16);
  --slate: #1d242c;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.38);
  --radius-xl: 36px;
  --radius-lg: 26px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --content-width: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 14% 10%, rgba(244, 161, 26, 0.18), transparent 26%),
    radial-gradient(circle at 82% 14%, rgba(255, 73, 57, 0.12), transparent 18%),
    radial-gradient(circle at 50% 120%, rgba(144, 255, 214, 0.08), transparent 24%),
    linear-gradient(180deg, #0a0e14 0%, #06080b 44%, #040507 100%);
  font-family: "Avenir Next Condensed", "Avenir Next", "Pretendard Variable", "Pretendard", "Apple SD Gothic Neo", sans-serif;
}

img {
  display: block;
  width: 100%;
}

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

button {
  font: inherit;
}

.site-shell {
  width: min(calc(100% - 40px), var(--content-width));
  margin: 0 auto;
  padding: 28px 0 60px;
}

.site-shell-legal {
  width: min(calc(100% - 40px), 920px);
}

.topbar,
.topbar-actions,
.topnav,
.language-toggle,
.hero-actions,
.footer,
.footer-links,
.device-header,
.release-notes {
  display: flex;
  align-items: center;
}

.topbar {
  justify-content: space-between;
  gap: 24px;
  padding: 10px 0 30px;
}

.topbar-actions {
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  overflow: hidden;
  border-radius: 14px;
  box-shadow: 0 18px 30px rgba(0, 0, 0, 0.28);
}

.brand-text {
  font-size: 1.18rem;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.topnav {
  gap: 18px;
  flex-wrap: wrap;
}

.topnav a,
.footer-links a {
  color: var(--muted);
  transition: color 160ms ease;
}

.topnav a:hover,
.footer-links a:hover {
  color: var(--text);
}

.language-toggle {
  gap: 8px;
  padding: 5px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}

.lang-button {
  border: 0;
  border-radius: 999px;
  padding: 8px 14px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
}

.lang-button.is-active {
  color: #071014;
  background: var(--amber);
}

.hero,
.workflow-section,
.surfaces-section,
.trust-section,
.support-section,
.legal-page {
  margin-top: 34px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: 28px;
  align-items: stretch;
}

.hero-copy,
.hero-panel,
.process-card,
.surface-card,
.trust-card,
.support-card,
.legal-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(18, 22, 28, 0.96), rgba(11, 14, 18, 0.9));
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 40px;
}

.hero-copy::before,
.support-card::before,
.legal-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.26), transparent);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--amber);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.2em;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.02;
}

h1 {
  font-size: clamp(2.9rem, 5vw, 5.2rem);
  max-width: 11ch;
}

h2 {
  font-size: clamp(2rem, 3.5vw, 3.4rem);
}

h3 {
  font-size: 1.32rem;
}

.hero-text,
.section-copy,
.hero-note p,
.process-card p,
.surface-card p,
.trust-card p,
.contact-meta,
.legal-card p {
  color: var(--muted);
  line-height: 1.72;
}

.hero-text {
  max-width: 58ch;
  margin: 18px 0 0;
}

.hero-actions {
  gap: 14px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 800;
}

.button-primary {
  color: #071014;
  background: var(--amber);
}

.button-secondary {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 34px 0 0;
}

.hero-stats div,
.process-card,
.surface-card,
.trust-card,
.contact-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--panel);
}

.hero-stats div {
  padding: 18px;
}

.hero-stats dt {
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-stats dd {
  margin: 10px 0 0;
  font-size: 1.08rem;
  font-weight: 800;
}

.hero-visual {
  display: grid;
  gap: 18px;
}

.hero-device {
  padding: 20px;
}

.device-header {
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.14em;
}

.signal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 6px rgba(255, 73, 57, 0.14);
}

.device-title {
  margin-right: auto;
  font-weight: 800;
}

.device-state {
  color: var(--amber);
}

.device-preview {
  position: relative;
  min-height: 500px;
  overflow: hidden;
  border-radius: 30px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01)),
    linear-gradient(180deg, #272f38 0%, #171e25 28%, #10161d 100%);
}

.road-grid {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 16%, rgba(255, 73, 57, 0.18), transparent 20%),
    linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.18) 100%),
    linear-gradient(90deg, transparent 47.4%, rgba(255, 255, 255, 0.2) 47.4%, rgba(255, 255, 255, 0.2) 52.6%, transparent 52.6%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0 2px, transparent 2px 100%);
  background-size: 100% 100%, 100% 100%, 100% 100%, 100% 48px;
  opacity: 0.72;
}

.overlay-stack {
  position: absolute;
  left: 20px;
  bottom: 22px;
  display: grid;
  gap: 10px;
  padding: 16px 18px;
  min-width: min(100% - 40px, 360px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  background: rgba(7, 10, 14, 0.78);
  backdrop-filter: blur(14px);
  font-family: "SF Mono", "Menlo", "Consolas", monospace;
  color: #f5f7f8;
}

.preview-badge {
  position: absolute;
  top: 18px;
  right: 18px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(244, 161, 26, 0.14);
  color: var(--amber);
  font-weight: 800;
}

.hero-sidecar {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 18px;
}

.hero-note {
  padding: 24px;
}

.hero-note-strong {
  background:
    radial-gradient(circle at 90% 18%, rgba(244, 161, 26, 0.1), transparent 26%),
    linear-gradient(180deg, rgba(20, 24, 30, 0.98), rgba(11, 14, 18, 0.92));
}

.hero-note-kicker,
.surface-kicker,
.trust-kicker,
.contact-label {
  display: block;
  margin-bottom: 10px;
  color: var(--amber);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.integrity-list,
.trust-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.integrity-list li,
.trust-list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.integrity-list li:first-child,
.trust-list li:first-child {
  border-top: 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 22px;
}

.process-grid,
.surface-grid,
.contact-grid {
  display: grid;
  gap: 18px;
}

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

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

.process-card,
.surface-card,
.trust-card,
.contact-card {
  padding: 22px;
}

.surface-card-highlight,
.contact-card-accent {
  background:
    radial-gradient(circle at top right, rgba(244, 161, 26, 0.16), transparent 32%),
    var(--panel-strong);
}

.process-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--amber);
  font-weight: 800;
}

.trust-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  gap: 18px;
}

.trust-card-large {
  background:
    radial-gradient(circle at top right, rgba(144, 255, 214, 0.14), transparent 28%),
    linear-gradient(180deg, rgba(17, 24, 28, 0.96), rgba(10, 14, 17, 0.92));
}

.support-card,
.legal-card {
  padding: 30px;
}

.contact-card {
  display: grid;
  gap: 10px;
}

.contact-card strong {
  font-size: 1.12rem;
}

.legal-page {
  display: grid;
  gap: 24px;
}

.legal-card {
  display: grid;
  gap: 26px;
}

.legal-card section {
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.legal-card section:first-child {
  padding-top: 0;
  border-top: 0;
}

.legal-inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 14px;
}

.legal-inline-links a {
  color: var(--text);
  font-weight: 700;
}

.legal-card h2 {
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.legal-card-center {
  text-align: center;
  justify-items: center;
}

.footer {
  justify-content: space-between;
  gap: 18px;
  margin-top: 42px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted);
}

.footer-links {
  gap: 16px;
  flex-wrap: wrap;
}

@media (max-width: 1100px) {
  .hero {
    grid-template-columns: 1fr;
  }

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

  .surface-grid,
  .contact-grid,
  .trust-layout,
  .hero-sidecar {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .site-shell {
    width: min(calc(100% - 24px), var(--content-width));
    padding-top: 20px;
  }

  .topbar,
  .topbar-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-copy,
  .hero-device,
  .hero-note,
  .support-card,
  .legal-card {
    padding: 22px;
  }

  .process-grid,
  .surface-grid,
  .contact-grid,
  .hero-stats {
    grid-template-columns: 1fr;
  }

  .device-preview {
    min-height: 380px;
  }

  h1 {
    font-size: clamp(2.3rem, 11vw, 3.8rem);
  }

  h2 {
    font-size: clamp(1.7rem, 8vw, 2.5rem);
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
  }
}