:root {
  color-scheme: dark;
  --bg: #05070a;
  --surface: #0d1117;
  --surface-2: #111827;
  --border: rgba(96, 165, 250, 0.24);
  --blue: #3b82f6;
  --cyan: #38bdf8;
  --text: #f8fafc;
  --muted: #94a3b8;
  --soft: #cbd5e1;
}

* {
  box-sizing: border-box;
}

html {
  overflow-x: hidden;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 70% 15%, rgba(59, 130, 246, 0.18), transparent 34%),
    linear-gradient(180deg, #05070a, #070b10);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  overflow-x: hidden;
}

a {
  color: inherit;
}

code {
  color: #bae6fd;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.95em;
  overflow-wrap: anywhere;
}

.shell {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(16px, 4vw, 24px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: rgba(5, 7, 10, 0.78);
  backdrop-filter: blur(12px);
  padding: 16px 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--text);
  font-weight: 800;
  min-width: 0;
  text-decoration: none;
}

.brand img {
  flex: 0 0 auto;
  border-radius: 12px;
}

.brand span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.links {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.links a {
  color: var(--soft);
  font-weight: 700;
  text-decoration: none;
}

.links a.active,
.links a:hover {
  color: var(--cyan);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.9fr);
  gap: 56px;
  align-items: center;
  padding: 74px 24px;
}

.eyebrow {
  color: var(--cyan);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin: 0 0 14px;
  text-transform: uppercase;
}

.hero h1,
.page h1 {
  margin: 0 0 22px;
  line-height: 0.98;
}

.hero h1 {
  font-size: clamp(52px, 7vw, 72px);
}

.hero p,
.lead {
  color: var(--soft);
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.55;
}

.actions {
  display: flex;
  gap: 16px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  border: 1px solid var(--border);
  border-radius: 14px;
  color: var(--text);
  font-weight: 800;
  padding: 14px 20px;
  text-align: center;
  text-decoration: none;
}

.btn.primary {
  background: var(--blue);
  border-color: var(--blue);
}

.visual {
  min-height: 420px;
  border: 1px solid rgba(56, 189, 248, 0.38);
  border-radius: 46px;
  background: url("/assets/hero-bg.jpg") center / cover;
  box-shadow: 0 0 60px rgba(59, 130, 246, 0.12);
  display: grid;
  place-items: center;
}

.visual img {
  width: min(280px, 68%);
  border-radius: 42px;
  box-shadow: 0 26px 90px rgba(0, 0, 0, 0.55);
}

.section {
  padding: 34px 0;
}

.section h2 {
  font-size: 34px;
  text-align: center;
}

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.card {
  border: 1px solid var(--border);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(17, 24, 39, 0.82), rgba(13, 17, 23, 0.92));
  padding: 26px;
}

.card h2,
.card h3 {
  margin-top: 0;
}

.card p,
.legal p {
  color: var(--soft);
  line-height: 1.65;
}

.app-card {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 22px;
}

.app-card img {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  object-fit: cover;
}

.tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  border-radius: 999px;
  background: #10243b;
  color: #9bc7ff;
  font-size: 13px;
  max-width: 100%;
  overflow-wrap: anywhere;
  padding: 7px 10px;
}

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

.page {
  max-width: 900px;
  margin: 64px auto;
}

.page h1 {
  font-size: clamp(40px, 6vw, 56px);
}

.reader-page {
  max-width: 980px;
}

.legal section {
  border-top: 1px solid var(--border);
  padding: 24px 0;
}

.notice {
  border: 1px dashed var(--border);
  border-radius: 24px;
  background: rgba(17, 24, 39, 0.55);
  padding: 24px;
}

footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  display: flex;
  gap: 24px;
  justify-content: space-between;
  margin-top: 70px;
  padding: 28px 0;
  flex-wrap: wrap;
}

footer > div {
  min-width: 0;
}

@media (max-width: 760px) {
  .shell {
    padding: 14px;
  }

  .nav {
    align-items: stretch;
    border-radius: 18px;
    flex-direction: column;
    gap: 14px;
    padding: 12px;
  }

  .brand {
    gap: 10px;
  }

  .brand img {
    width: 40px;
    height: 40px;
  }

  .brand span {
    font-size: 17px;
  }

  .links {
    display: grid;
    gap: 8px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    justify-content: stretch;
    width: 100%;
  }

  .links a {
    background: rgba(17, 24, 39, 0.68);
    border: 1px solid rgba(96, 165, 250, 0.16);
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.2;
    min-width: 0;
    padding: 10px 8px;
    text-align: center;
  }

  .hero {
    gap: 24px;
    grid-template-columns: 1fr;
    padding: 34px 0 24px;
  }

  .hero h1 {
    font-size: 44px;
    line-height: 1.02;
    margin-bottom: 16px;
  }

  .hero p,
  .lead {
    font-size: 18px;
    line-height: 1.58;
  }

  .actions {
    gap: 10px;
    margin-top: 22px;
  }

  .cards,
  .principles {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .section {
    padding: 24px 0;
  }

  .section h2 {
    font-size: 28px;
    margin: 0 0 18px;
    text-align: left;
  }

  .card {
    border-radius: 18px;
    padding: 18px;
  }

  .card h2,
  .card h3 {
    line-height: 1.2;
    margin-bottom: 10px;
  }

  .visual {
    border-radius: 26px;
    min-height: 230px;
  }

  .visual img {
    border-radius: 28px;
    width: 150px;
  }

  .app-card {
    gap: 14px;
    grid-template-columns: 76px minmax(0, 1fr);
  }

  .app-card img {
    border-radius: 18px;
    width: 64px;
    height: 64px;
  }

  .page {
    margin: 38px auto 28px;
  }

  .page h1 {
    font-size: 40px;
    line-height: 1.06;
    margin-bottom: 16px;
  }

  .legal section {
    padding: 18px 0;
  }

  .notice {
    border-radius: 18px;
    padding: 18px;
  }

  footer {
    flex-direction: column;
    font-size: 14px;
    gap: 12px;
    line-height: 1.7;
    margin-top: 42px;
    padding: 22px 0;
  }
}

@media (max-width: 480px) {
  .shell {
    padding: 12px;
  }

  .hero {
    padding-top: 28px;
  }

  .hero h1 {
    font-size: 40px;
  }

  .hero p,
  .lead {
    font-size: 17px;
  }

  .actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .visual {
    min-height: 200px;
  }

  .visual img {
    width: 132px;
  }

  .app-card {
    grid-template-columns: 64px minmax(0, 1fr);
  }

  .app-card img {
    width: 56px;
    height: 56px;
  }

  .tag {
    font-size: 12px;
  }
}