:root {
  color-scheme: light dark;
  --bg: #f5f7fb;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: rgba(255, 255, 255, 0.94);
  --text: #172033;
  --text-secondary: #5f6b85;
  --border: rgba(23, 32, 51, 0.1);
  --accent: #5b7cff;
  --accent-strong: #3e63f4;
  --shadow: 0 18px 40px rgba(31, 41, 55, 0.08);
  --success: #127a4a;
  --max-width: 960px;
  --radius: 20px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1420;
    --surface: rgba(20, 27, 41, 0.82);
    --surface-strong: rgba(20, 27, 41, 0.94);
    --text: #eef2ff;
    --text-secondary: #a6b1c8;
    --border: rgba(255, 255, 255, 0.08);
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top, rgba(91, 124, 255, 0.18), transparent 34%),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
}

img {
  max-width: 100%;
}

a {
  color: var(--accent-strong);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(245, 247, 251, 0.72);
  border-bottom: 1px solid var(--border);
}

@media (prefers-color-scheme: dark) {
  .site-header {
    background: rgba(15, 20, 32, 0.72);
  }
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  color: var(--text);
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 600;
}

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

.hero {
  padding: 72px 0 40px;
}

.hero-card,
.card,
.page-card {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-card {
  padding: 40px;
  border-radius: 28px;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(91, 124, 255, 0.12);
  color: var(--accent-strong);
  font-weight: 700;
  font-size: 14px;
}

.hero h1,
.page-hero h1 {
  margin: 16px 0 12px;
  font-size: clamp(36px, 7vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.hero p,
.page-hero p {
  margin: 0;
  max-width: 720px;
  color: var(--text-secondary);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid transparent;
}

.button {
  background: var(--accent);
  color: white;
}

.button:hover {
  text-decoration: none;
  background: var(--accent-strong);
}

.button-secondary {
  color: var(--text);
  background: var(--surface-strong);
  border-color: var(--border);
}

.button-secondary:hover {
  text-decoration: none;
}

.section {
  padding: 16px 0 32px;
}

.section-title {
  margin: 0 0 18px;
  font-size: 28px;
  letter-spacing: -0.02em;
}

.grid {
  display: grid;
  gap: 18px;
}

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

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

.card,
.page-card {
  border-radius: var(--radius);
}

.card {
  padding: 24px;
}

.card h3,
.page-card h2 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 20px;
}

.card p,
.page-card p,
.page-card li {
  color: var(--text-secondary);
}

.check-list,
.link-list,
.policy-list {
  margin: 0;
  padding-left: 20px;
}

.policy-list li + li,
.check-list li + li,
.link-list li + li {
  margin-top: 8px;
}

.page-shell {
  padding: 40px 0 60px;
}

.page-hero {
  margin-bottom: 20px;
}

.page-card {
  padding: 28px;
  margin-bottom: 16px;
}

.page-card h2 {
  scroll-margin-top: 100px;
}

.note {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(91, 124, 255, 0.08);
  color: var(--text);
}

.footer {
  padding: 28px 0 44px;
  color: var(--text-secondary);
  font-size: 14px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}

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

.muted {
  color: var(--text-secondary);
}

/* Language switcher */
.lang-switcher {
  display: inline-flex;
  gap: 0;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  overflow: hidden;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  height: 34px;
  padding: 0 14px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  font-family: inherit;
}

.lang-btn:hover {
  background: rgba(91, 124, 255, 0.08);
}

.lang-btn-active {
  background: var(--accent);
  color: white;
}

.lang-btn-active:hover {
  background: var(--accent-strong);
}

@media (prefers-color-scheme: dark) {
  .lang-switcher {
    background: var(--surface-strong);
  }
}

@media (max-width: 820px) {
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .hero-card,
  .page-card {
    padding: 24px;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding: 14px 0;
  }

  .hero {
    padding-top: 36px;
  }
}