:root {
  --bg: #141c3c;
  --bg-top: #1f3164;
  --surface: #1b2952;
  --text: #e6ecf8;
  --muted: #bcc8e3;
  --accent: #6f95ff;
  --card-bg: #182447;
  --card-border: #253a6b;
  --seg-bg: #1a2a53;
  --seg-border: #355287;
  --accent-text: #0d1a3a;
  --visual-bg: #162241;
  --visual-border: #2a4275;
  --input-bg: #101c3e;
  --input-border: #2a4275;
}

html[data-theme="light"] {
  --bg: #edf2ff;
  --bg-top: #d9e5ff;
  --surface: #ffffff;
  --text: #1a2a4d;
  --muted: #4a5d87;
  --accent: #3f67d8;
  --card-bg: #ffffff;
  --card-border: #cad7f2;
  --seg-bg: #f2f6ff;
  --seg-border: #a9bee8;
  --accent-text: #ffffff;
  --visual-bg: #f7faff;
  --visual-border: #d0ddf5;
  --input-bg: #ffffff;
  --input-border: #c4d4f2;
}

html {
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, var(--bg-top) 0, var(--bg) 68%);
}

.page {
  width: min(860px, 100% - 2rem);
  margin: 0 auto 4rem;
  display: grid;
  gap: 1.5rem;
}

.site-header {
  width: min(860px, 100% - 2rem);
  margin: 0.9rem auto 1rem;
  padding: 0.85rem 1rem;
  border-radius: 16px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  position: sticky;
  top: 0.6rem;
  z-index: 20;
}

.brand-link {
  display: inline-flex;
  align-items: center;
}

.site-nav {
  display: flex;
  gap: 1rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}

.site-nav a:hover {
  color: var(--text);
}

.hero,
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.5rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.logo {
  display: block;
  height: 32px;
  width: auto;
}

.top-controls {
  display: inline-flex;
  gap: 0.6rem;
}

.seg-switch {
  display: inline-flex;
  gap: 0.4rem;
}

.seg-btn {
  border: 1px solid var(--seg-border);
  background: var(--seg-bg);
  color: var(--text);
  border-radius: 999px;
  padding: 0.3rem 0.65rem;
  font-size: 0.8rem;
  cursor: pointer;
}

.seg-btn.is-active {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-text);
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

h1,
h2 {
  margin: 0.5rem 0 0.75rem;
}

.lead {
  margin: 0 0 1.25rem;
  color: var(--muted);
  line-height: 1.6;
}

.button {
  display: inline-block;
  text-decoration: none;
  color: var(--accent-text);
  background: var(--accent);
  padding: 0.6rem 1rem;
  border-radius: 999px;
  font-weight: 700;
}

p {
  line-height: 1.6;
}

.bullet-list {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
  line-height: 1.7;
}

.profile-list {
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.profile-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 1rem;
}

.profile-row dt {
  color: var(--muted);
}

.profile-row dd {
  margin: 0;
}

.visual-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.visual-card {
  margin: 0;
  border: 1px solid var(--visual-border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--visual-bg);
}

.visual-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.visual-card figcaption {
  padding: 0.7rem 0.8rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.contact-form {
  display: grid;
  gap: 0.9rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field span {
  font-size: 0.85rem;
  color: var(--muted);
}

.field input,
.field textarea {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--input-border);
  background: var(--input-bg);
  color: var(--text);
  padding: 0.65rem 0.75rem;
  font: inherit;
}

.field textarea {
  resize: vertical;
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.form-status {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.form-status.is-error {
  color: #ff8e8e;
}

.contact-form button:disabled {
  opacity: 0.65;
  cursor: wait;
}

@media (max-width: 760px) {
  .site-header {
    position: static;
    flex-wrap: wrap;
  }

  .site-nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 0.7rem;
    flex-wrap: wrap;
  }

  .top-controls {
    margin-left: auto;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  .visual-grid {
    grid-template-columns: 1fr;
  }

  .profile-row {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

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