:root {
  --accent: #1f4fbf;
  --accent-dark: #14357f;
  --gold: #a86f00;
  --gold-bright: #ffc83d;
  --ink: #121a2e;
  --muted: #56607a;
  --line: #dbe2f0;
  --bg: #f5f7fc;
  --card: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
}

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

a:hover {
  text-decoration: underline;
}

a:focus-visible {
  outline: 3px solid var(--gold-bright);
  outline-offset: 2px;
  border-radius: 4px;
}

.wrap {
  width: min(760px, calc(100% - 2rem));
  margin: 0 auto;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(245, 247, 252, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: url('/app_icon.png') center/cover no-repeat;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.4);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.hero-band {
  background: linear-gradient(180deg, #e7edfb 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--line);
}

.hero {
  padding: 3rem 0 2rem;
}

.hero-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.hero-icon {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  box-shadow: 0 10px 24px rgba(20, 53, 127, 0.25), 0 2px 6px rgba(0, 0, 0, 0.08);
  border: 2px solid #ffffff;
  display: block;
}

.hero h1 {
  margin: 0 0 0.4rem;
  font-size: clamp(1.85rem, 4vw, 2.4rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.hero .tagline {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--gold);
}

.hero p {
  margin: 0;
  max-width: 38rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.75rem 1.15rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-dark);
}

.btn-secondary {
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--line);
}

.section {
  padding: 1.5rem 0 3rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1.25rem 1.35rem;
  margin: 0.85rem 0;
}

.card h2 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.notice {
  border-left: 4px solid var(--gold-bright);
}

.page {
  padding: 2.25rem 0 3.5rem;
}

.page h1 {
  margin: 0 0 0.35rem;
  font-size: 2rem;
  letter-spacing: -0.02em;
}

.lede {
  margin: 0 0 1.75rem;
  color: var(--muted);
}

.page h2 {
  margin: 1.75rem 0 0.55rem;
  font-size: 1.15rem;
}

.page .card h2 {
  margin-top: 0;
}

.page p,
.page li {
  color: #2a3450;
}

.page .card p {
  color: var(--muted);
}

.page ul {
  padding-left: 1.2rem;
}

.page li {
  margin: 0.3rem 0;
}

.meta {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  justify-content: space-between;
}

@media (max-width: 560px) {
  .nav-links {
    gap: 0.75rem;
    font-size: 0.88rem;
  }
}