:root {
  color-scheme: light;
  --paper: #fffdfb;
  --canvas: #fff7f8;
  --ink: #3f3438;
  --muted: #7d6e73;
  --pink: #e96f9a;
  --pink-soft: #fce8ef;
  --line: #f0dfe5;
  --shadow: 0 18px 60px rgba(92, 55, 68, 0.09);
}

* { box-sizing: border-box; }

html {
  max-width: 100%;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  max-width: 100%;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 10% 0%, rgba(255, 220, 231, 0.75), transparent 30rem),
    var(--canvas);
  color: var(--ink);
  font: 16px/1.78 -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", sans-serif;
}

a { color: var(--pink); text-decoration: none; }
a:hover { text-decoration: underline; }

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding: 0 24px;
  background: rgba(255, 253, 251, 0.88);
  border-bottom: 1px solid rgba(240, 223, 229, 0.8);
  backdrop-filter: blur(18px);
}

.brand {
  color: var(--ink);
  font-size: 21px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.nav-links { display: flex; gap: 20px; font-size: 14px; }

.shell {
  width: min(920px, calc(100% - 32px));
  margin: 42px auto 72px;
}

.paper {
  min-width: 0;
  padding: clamp(26px, 5vw, 64px);
  background: var(--paper);
  border: 1px solid rgba(240, 223, 229, 0.9);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--pink);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

h1 {
  margin: 0;
  font-size: clamp(30px, 6vw, 50px);
  line-height: 1.18;
  letter-spacing: -0.025em;
}

h2 {
  margin: 42px 0 12px;
  font-size: 21px;
  line-height: 1.45;
}

h3 { margin: 28px 0 8px; font-size: 17px; }

p, li {
  color: #514349;
  overflow-wrap: anywhere;
}
ul { padding-left: 1.3em; }

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 18px 0 26px;
  color: var(--muted);
  font-size: 14px;
}

.notice {
  margin: 24px 0;
  padding: 18px 20px;
  background: var(--pink-soft);
  border: 1px solid #f6cfdd;
  border-radius: 16px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 30px;
}

.card {
  display: block;
  min-height: 172px;
  padding: 22px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: 0 12px 35px rgba(92, 55, 68, 0.06);
}

.card:hover { text-decoration: none; border-color: #efb8cc; transform: translateY(-2px); }
.card h2 { margin: 16px 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }
.card-icon { font-size: 28px; }

.steps {
  display: grid;
  gap: 12px;
  margin: 22px 0;
}

.step {
  padding: 17px 19px;
  background: #fff9fa;
  border: 1px solid var(--line);
  border-radius: 15px;
}

.footer {
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.small { color: var(--muted); font-size: 14px; }

@media (max-width: 680px) {
  .nav { padding: 0 16px; }
  .nav-links { gap: 12px; }
  .nav-links a:not(:last-child) { display: none; }
  .shell {
    width: calc(100% - 20px);
    margin-top: 14px;
  }
  .paper {
    padding: 24px 20px;
    border-radius: 22px;
  }
  .meta { display: grid; }
  .cards { grid-template-columns: 1fr; }
}