:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #64748b;
  --line: #d7deea;
  --panel: #ffffff;
  --soft: #f4f7fb;
  --dark: #171923;
  --orange: #ff5b1a;
  --pink: #db4fa1;
  --violet: #7a4df4;
  --green: #16a34a;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--soft);
  color: var(--ink);
  font-size: 14px;
}

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

.landing-topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 54px);
  border-bottom: 1px solid var(--line);
  background: rgba(244, 247, 251, 0.92);
  backdrop-filter: blur(16px);
}

.landing-brand,
.landing-topbar nav,
.hero-actions,
.device-bar,
.model-list,
.login-band {
  display: flex;
  align-items: center;
}

.landing-brand {
  gap: 10px;
  min-width: 220px;
}

.landing-brand img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.landing-brand strong,
.landing-brand small {
  display: block;
}

.landing-brand small,
.eyebrow,
.preview-panel span,
.preview-panel small,
.login-panel span {
  color: var(--muted);
}

.landing-topbar nav {
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.landing-topbar nav a {
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 700;
}

.landing-topbar nav a:last-child {
  border-color: var(--ink);
  background: var(--ink);
  color: #fff;
}

.landing-hero {
  min-height: calc(100vh - 74px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.86fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  padding: clamp(34px, 6vw, 74px) clamp(18px, 5vw, 72px);
}

.hero-copy {
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 10px;
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 1.06;
  letter-spacing: 0;
}

.hero-copy p:not(.eyebrow),
.login-copy p {
  max-width: 640px;
  color: #46556f;
  font-size: 17px;
  line-height: 1.72;
}

.hero-actions {
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 26px;
}

.primary-action,
.secondary-action,
.login-panel button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border-radius: 8px;
  border: 1px solid var(--ink);
  font-weight: 900;
}

.primary-action,
.login-panel button {
  background: var(--orange);
  border-color: var(--orange);
  color: #fff;
}

.secondary-action {
  background: #fff;
}

.product-frame {
  border: 1px solid #1f2937;
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 26px 70px rgba(17, 24, 39, 0.16);
  overflow: hidden;
}

.device-bar {
  justify-content: space-between;
  min-height: 52px;
  padding: 0 16px;
  background: var(--dark);
  color: #fff;
  font-weight: 900;
}

.device-bar strong {
  color: #7cf7a0;
}

.device-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 14px;
  min-height: 360px;
  background: #edf2f7;
}

.preview-panel {
  display: flex;
  min-height: 160px;
  flex-direction: column;
  justify-content: space-between;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
}

.preview-panel.dark {
  background: #171923;
  color: #fff;
}

.preview-panel.accent {
  background: #fff3ed;
  border-color: #ffb899;
}

.preview-panel strong {
  font-size: 34px;
  letter-spacing: 0;
}

.feature-band,
.model-band,
.login-band {
  margin: 0 clamp(18px, 5vw, 72px) 22px;
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}

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

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.feature-grid article {
  min-height: 190px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fbfcff;
}

.feature-grid span {
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  font-weight: 900;
}

.feature-grid strong {
  display: block;
  margin-bottom: 8px;
  font-size: 17px;
}

.feature-grid p {
  color: #526174;
  line-height: 1.58;
}

.model-band {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 28px;
  align-items: center;
}

.model-list {
  gap: 10px;
  flex-wrap: wrap;
}

.model-list span {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #f8fafc;
  font-weight: 800;
}

.login-band {
  align-items: stretch;
  justify-content: space-between;
  gap: clamp(22px, 4vw, 56px);
  margin-bottom: 60px;
}

.login-copy {
  max-width: 640px;
}

.login-panel {
  width: min(100%, 420px);
  display: grid;
  gap: 12px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #f8fafc;
}

.login-panel label,
.login-panel span {
  display: grid;
  gap: 7px;
}

.login-panel input {
  width: 100%;
  height: 46px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

.login-panel button {
  width: 100%;
  cursor: pointer;
  font: inherit;
}

#landingLoginStatus {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

#landingLoginStatus a {
  color: var(--orange);
  font-weight: 900;
}

@media (max-width: 980px) {
  .landing-hero,
  .model-band,
  .login-band {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .landing-topbar {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .landing-topbar nav {
    justify-content: flex-start;
  }

  .landing-hero {
    min-height: auto;
  }

  h1 {
    font-size: 38px;
  }

  .device-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }
}