:root {
  --page-bg: #f4f7fb;
  --surface: #ffffff;
  --surface-muted: #eef3f8;
  --ink: #17212b;
  --muted: #5d6a76;
  --line: #dbe3ea;
  --accent: #166b72;
  --accent-dark: #0d4c52;
  --accent-soft: #dceff0;
  --shadow: 0 18px 45px rgba(23, 33, 43, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--page-bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--page-bg);
  color: var(--ink);
}

a {
  color: var(--accent-dark);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(219, 227, 234, 0.9);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
}

.site-header-inner,
.site-footer-inner,
.site-container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header-inner {
  display: flex;
  min-height: 72px;
  align-items: center;
  gap: 14px;
}

.app-icon {
  display: block;
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  border-radius: 22%;
  object-fit: cover;
}

.site-name {
  overflow: hidden;
  font-size: 1rem;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-main {
  min-height: calc(100vh - 144px);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #172b35;
  color: #eaf1f3;
}

.site-footer-inner {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 0;
  font-size: 0.82rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links a {
  color: #eaf1f3;
}

.landing-hero {
  background: linear-gradient(135deg, #0d4c52 0%, #166b72 58%, #2f8b87 100%);
  color: #ffffff;
}

.landing-hero-inner {
  display: grid;
  min-height: 560px;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 390px);
  align-items: center;
  gap: clamp(32px, 7vw, 96px);
  padding: 64px 0;
}

.landing-copy {
  max-width: 620px;
}

.landing-kicker {
  margin: 0 0 14px;
  color: #c8ebeb;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.landing-title {
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.landing-subtitle {
  max-width: 560px;
  margin: 22px 0 0;
  color: #e4f4f4;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.6;
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  margin-top: 32px;
}

.store-links {
  display: grid;
  gap: 10px;
}

.store-badge {
  display: block;
  width: 176px;
  height: 52px;
  object-fit: contain;
}

.qr-code {
  width: 112px;
  height: 112px;
  padding: 6px;
  background: #ffffff;
  border-radius: 8px;
}

.landing-screen {
  width: min(100%, 340px);
  max-height: 470px;
  justify-self: center;
  overflow: hidden;
  border: 8px solid rgba(255, 255, 255, 0.8);
  border-radius: 28px;
  box-shadow: 0 24px 50px rgba(5, 37, 42, 0.28);
}

.landing-screen img {
  display: block;
  width: 100%;
  height: auto;
}

.landing-features {
  padding: 56px 0 72px;
  background: var(--page-bg);
}

.feature-list {
  display: grid;
  max-width: 760px;
  margin: 0 auto;
  padding: 0;
  gap: 12px;
  list-style: none;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: 0 5px 16px rgba(23, 33, 43, 0.04);
  line-height: 1.55;
}

.feature-mark {
  display: grid;
  width: 24px;
  height: 24px;
  flex: 0 0 24px;
  place-items: center;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 0.75rem;
  font-weight: 800;
}

.legal-page {
  padding: 56px 0 72px;
}

.contact-page,
.error-page {
  display: grid;
  place-items: center;
  padding: 56px 0 72px;
}

.contact-document,
.error-document {
  width: min(760px, 100%);
  padding: clamp(28px, 5vw, 48px);
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.contact-heading,
.error-heading {
  margin: 0 0 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  line-height: 1.3;
}

.contact-content {
  margin: 0 0 20px;
  color: #33424d;
  font-size: 1rem;
  line-height: 1.8;
  white-space: pre-line;
}

.contact-address {
  margin: 0;
  padding: 16px 18px;
  border-radius: 8px;
  background: var(--surface-muted);
  color: var(--ink);
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.error-document {
  max-width: 560px;
  text-align: center;
}

.error-mark {
  display: grid;
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  place-items: center;
  border: 1px solid #b9dfe1;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 1.35rem;
  font-weight: 800;
}

.error-heading {
  margin-bottom: 0;
  border-bottom: 0;
}

.legal-document {
  max-width: 860px;
  margin: 0 auto;
  padding: clamp(28px, 5vw, 56px);
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.legal-heading {
  margin: 0 0 32px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1.25;
}

.legal-content {
  color: #33424d;
  font-size: 1rem;
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.legal-content > :first-child {
  margin-top: 0;
}

.legal-content > :last-child {
  margin-bottom: 0;
}

.legal-content h1,
.legal-content h2,
.legal-content h3,
.legal-content h4 {
  color: var(--ink);
  line-height: 1.35;
}

.legal-content h1 {
  margin: 2rem 0 0.75rem;
  font-size: 1.55rem;
}

.legal-content h2 {
  margin: 1.8rem 0 0.65rem;
  font-size: 1.3rem;
}

.legal-content h3 {
  margin: 1.45rem 0 0.55rem;
  font-size: 1.1rem;
}

.legal-content h4 {
  margin: 1.2rem 0 0.45rem;
  font-size: 1rem;
}

.legal-content p,
.legal-content ul,
.legal-content ol,
.legal-content blockquote,
.legal-content pre,
.legal-content table {
  margin: 0 0 1rem;
}

.legal-content ul,
.legal-content ol {
  padding-left: 1.5rem;
}

.legal-content li + li {
  margin-top: 0.35rem;
}

.legal-content blockquote {
  padding: 12px 16px;
  border-left: 4px solid var(--accent);
  background: var(--surface-muted);
}

.legal-content code {
  padding: 0.12em 0.35em;
  border-radius: 4px;
  background: var(--surface-muted);
  font-size: 0.9em;
}

.legal-content pre {
  overflow-x: auto;
  padding: 16px;
  border-radius: 8px;
  background: #172b35;
  color: #eaf1f3;
}

.legal-content pre code {
  padding: 0;
  background: transparent;
}

.legal-content table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
}

.legal-content th,
.legal-content td {
  padding: 9px 12px;
  border: 1px solid var(--line);
  text-align: left;
}

.legal-content th {
  background: var(--surface-muted);
  color: var(--ink);
}

@media (max-width: 720px) {
  .site-header-inner,
  .site-footer-inner,
  .site-container {
    width: min(100% - 28px, 1120px);
  }

  .landing-hero-inner {
    min-height: 0;
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 48px 0 56px;
  }

  .landing-title {
    font-size: clamp(2.25rem, 12vw, 3.4rem);
  }

  .landing-screen {
    width: min(72vw, 300px);
    max-height: 390px;
  }

  .download-actions {
    align-items: flex-start;
  }

  .legal-page {
    padding: 28px 0 40px;
  }

  .contact-page,
  .error-page {
    padding: 28px 0 40px;
  }

  .legal-document,
  .contact-document,
  .error-document {
    padding: 24px 20px;
    border-radius: 10px;
  }

  .site-footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}