:root {
  color-scheme: dark;
  --bg: #0d0f13;
  --surface: #14171d;
  --surface-hover: #1b1f27;
  --text: #f5f7fa;
  --muted: #9da6b2;
  --soft: #6f7884;
  --line: rgba(255, 255, 255, 0.10);
  --line-strong: rgba(255, 255, 255, 0.18);
  --accent: #ffffff;
  --accent-text: #0d0f13;
  --max-width: 820px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 15% 8%, rgba(255,255,255,0.065), transparent 27rem),
    radial-gradient(circle at 85% 85%, rgba(255,255,255,0.025), transparent 24rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.page-shell {
  width: min(calc(100% - 40px), var(--max-width));
  margin: auto;
  padding: 54px 0 44px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 72px;
}

.site-mark {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 720;
  letter-spacing: 0.13em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-mark:hover,
.site-mark:focus-visible {
  color: var(--text);
}

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #59616c;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.language-switch a,
.language-current {
  padding: 7px 2px;
}

.language-switch a {
  color: var(--muted);
  text-decoration: none;
}

.language-switch a:hover,
.language-switch a:focus-visible {
  color: var(--text);
}

.language-current {
  color: var(--text);
}

.hero {
  position: relative;
  min-width: 0;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(3rem, 8.7vw, 6.2rem);
  font-weight: 760;
  letter-spacing: -0.065em;
  line-height: 0.94;
  text-wrap: balance;
}

.lead {
  margin: 30px 0 0;
  color: var(--text);
  font-size: clamp(1.2rem, 2.8vw, 1.55rem);
  font-weight: 560;
  letter-spacing: -0.025em;
}

.intro {
  max-width: 690px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

.areas {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.areas li {
  padding: 8px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.025);
  color: #aab2bd;
  font-size: 0.82rem;
  line-height: 1;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 680;
  text-decoration: none;
  transition: transform 140ms ease, background 140ms ease, border-color 140ms ease;
  -webkit-tap-highlight-color: transparent;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-text);
}

.button-primary:hover {
  background: #e8ebef;
}

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

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

.social-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 28px;
  color: #657080;
  font-size: 0.92rem;
}

.social-links a {
  color: var(--muted);
  text-decoration: none;
}

.social-links a:hover,
.social-links a:focus-visible {
  color: var(--text);
}

.status {
  display: inline-block;
  margin: 52px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--soft);
  font-size: 0.84rem;
  line-height: 1.55;
}

.site-footer {
  width: min(calc(100% - 40px), var(--max-width));
  margin: 0 auto;
  padding: 0 0 28px;
  color: #59616c;
  font-size: 0.78rem;
}

::selection {
  background: #f5f7fa;
  color: #0d0f13;
}

:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 4px;
}

@media (max-width: 700px) {
  .page-shell {
    width: min(calc(100% - 36px), var(--max-width));
    padding-top: 42px;
    padding-bottom: 40px;
  }

  .topbar {
    margin-bottom: 54px;
  }

  .site-footer {
    width: min(calc(100% - 36px), var(--max-width));
  }

  h1 {
    font-size: clamp(2.7rem, 12vw, 4.5rem);
    letter-spacing: -0.055em;
    line-height: 0.96;
  }
}

@media (max-width: 480px) {
  .page-shell {
    width: 100%;
    margin: 0;
    padding:
      max(26px, env(safe-area-inset-top))
      max(22px, env(safe-area-inset-right))
      34px
      max(22px, env(safe-area-inset-left));
  }

  .topbar {
    margin-bottom: 44px;
  }

  .site-mark {
    font-size: 0.69rem;
    letter-spacing: 0.11em;
  }

  .language-switch {
    font-size: 0.71rem;
  }

  h1 {
    max-width: 100%;
    font-size: clamp(2.38rem, 10.9vw, 3.1rem);
    letter-spacing: -0.052em;
    line-height: 0.98;
  }

  .lead {
    margin-top: 24px;
    font-size: 1.08rem;
    line-height: 1.35;
  }

  .intro {
    margin-top: 16px;
    font-size: 0.97rem;
    line-height: 1.66;
  }

  .areas {
    gap: 7px;
    margin-top: 24px;
  }

  .areas li {
    padding: 8px 10px;
    font-size: 0.77rem;
  }

  .actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    margin-top: 30px;
  }

  .button {
    width: 100%;
    min-height: 48px;
    border-radius: 11px;
    font-size: 0.94rem;
  }

  .social-links {
    margin-top: 20px;
    gap: 8px 10px;
    font-size: 0.9rem;
  }

  .social-links a {
    display: inline-flex;
    min-height: 40px;
    align-items: center;
    margin-left: -10px;
    padding: 0 10px;
  }

  .status {
    width: min(100%, 330px);
    margin-top: 34px;
    padding-top: 16px;
    font-size: 0.79rem;
  }

  .site-footer {
    width: 100%;
    margin-top: auto;
    padding:
      0
      max(22px, env(safe-area-inset-right))
      max(24px, env(safe-area-inset-bottom))
      max(22px, env(safe-area-inset-left));
    font-size: 0.74rem;
  }
}

@media (max-width: 360px) {
  .page-shell {
    padding-left: 18px;
    padding-right: 18px;
  }

  h1 {
    font-size: 2.3rem;
  }

  .areas li {
    font-size: 0.74rem;
  }

  .site-footer {
    padding-left: 18px;
    padding-right: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}