:root {
  color-scheme: light;
  --sky: #dff5ff;
  --sky-deep: #bce8f6;
  --paper: rgba(255, 255, 255, 0.78);
  --paper-strong: #ffffff;
  --ink: #082033;
  --muted: #4f7181;
  --aqua: #08a9be;
  --ocean: #087eae;
  --mint: #39c7aa;
  --coral: #ff6f61;
  --line: rgba(8, 61, 83, 0.12);
  --shadow: 0 18px 46px rgba(28, 109, 139, 0.15);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.72), transparent 38%),
    linear-gradient(180deg, var(--sky) 0%, #f7fcff 52%, #e9f8f5 100%);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  letter-spacing: 0;
  line-height: 1.55;
}

a {
  color: var(--ocean);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--aqua);
}

.shell {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(239, 250, 255, 0.82);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
}

.topbar-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  text-decoration: none;
  font-size: 18px;
  font-weight: 750;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(145deg, var(--ocean), var(--aqua) 58%, var(--mint));
  box-shadow: 0 7px 18px rgba(8, 126, 174, 0.22);
  font-size: 16px;
  font-weight: 800;
}

nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
  font-weight: 650;
}

nav a {
  color: var(--muted);
  text-decoration: none;
}

main {
  padding: 56px 0 72px;
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 118px;
  gap: 32px;
  align-items: center;
  margin-bottom: 28px;
}

.app-mark {
  display: grid;
  width: 118px;
  height: 118px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.32), transparent 42%),
    linear-gradient(145deg, var(--ocean), var(--aqua) 58%, var(--mint));
  box-shadow: var(--shadow);
}

.app-mark span {
  font-size: 42px;
  font-weight: 820;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--ocean);
  font-size: 13px;
  font-weight: 750;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.18;
  letter-spacing: 0;
}

h1 {
  max-width: 700px;
  margin-bottom: 14px;
  font-size: clamp(34px, 6vw, 58px);
}

h2 {
  margin-bottom: 12px;
  font-size: 23px;
}

h3 {
  margin-bottom: 7px;
  font-size: 17px;
}

.lead {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.panel {
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
}

.card {
  padding: 24px;
}

.card p,
.document p,
.document li {
  color: var(--muted);
}

.card p:last-child,
.document p:last-child {
  margin-bottom: 0;
}

.action {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 8px;
  padding: 10px 15px;
  border-radius: 8px;
  color: white;
  background: linear-gradient(100deg, var(--ocean), var(--aqua));
  font-weight: 720;
  text-decoration: none;
  box-shadow: 0 10px 24px rgba(8, 126, 174, 0.2);
}

.action:hover {
  color: white;
  filter: brightness(1.04);
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding: 8px 11px;
  border: 1px solid rgba(57, 199, 170, 0.24);
  border-radius: 8px;
  color: #176a5c;
  background: rgba(57, 199, 170, 0.1);
  font-size: 13px;
  font-weight: 700;
}

.status::before {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mint);
  content: "";
}

.document {
  padding: 30px;
}

.document section + section {
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.notice {
  padding: 16px 18px;
  border-left: 4px solid var(--coral);
  border-radius: 0 8px 8px 0;
  background: rgba(255, 111, 97, 0.08);
  color: #713932;
}

footer {
  padding: 24px 0 42px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

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

@media (max-width: 680px) {
  .shell {
    width: min(100% - 24px, 920px);
  }

  .topbar-inner {
    min-height: 62px;
  }

  nav {
    gap: 12px;
    font-size: 13px;
  }

  nav a:last-child {
    display: none;
  }

  main {
    padding-top: 38px;
  }

  .intro {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .app-mark {
    grid-row: 1;
    width: 82px;
    height: 82px;
  }

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

  .card,
  .document {
    padding: 20px;
  }
}