:root {
  --primary: #d85b83;
  --primary-hover: #c44a70;
  --bg-main: #fff8fa;
  --bg-soft: #fff0f4;
  --text-dark: #292329;
  --text-muted: #666666;
  --border: #f1e5e9;
  --max-width: 1050px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg-main);
  color: var(--text-dark);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header & Mobile Navigation */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  padding: 16px 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  color: var(--primary);
  font-size: 22px;
  font-weight: 800;
  text-decoration: none;
}

nav {
  display: flex;
  gap: 20px;
}

nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  transition: color 0.2s ease;
}

nav a:hover,
nav a.active {
  color: var(--primary);
}

/* Page Containers */
main {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 20px 60px;
}

.card {
  background: #ffffff;
  padding: 40px;
  border-radius: 24px;
  border: 1px solid var(--border);
}

/* Common Typography & Buttons */
h1 {
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.2;
  margin-bottom: 16px;
}

h2 {
  font-size: 24px;
  margin-top: 30px;
  margin-bottom: 12px;
  color: var(--primary);
}

h3 {
  font-size: 18px;
  margin-top: 20px;
  margin-bottom: 8px;
}

p, li {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.7;
}

ul {
  padding-left: 20px;
  margin-bottom: 16px;
}

.button {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 28px;
  border-radius: 30px;
  background: var(--primary);
  color: #ffffff;
  text-decoration: none;
  font-weight: 700;
  transition: background 0.2s ease;
  text-align: center;
}

.button:hover {
  background: var(--primary-hover);
}

.notice-box {
  background: var(--bg-soft);
  padding: 24px;
  border-radius: 18px;
  margin: 24px 0;
  border: 1px solid var(--border);
}

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

/* Footer */
footer {
  text-align: center;
  padding: 35px 20px;
  background: var(--text-dark);
  color: #ffffff;
  margin-top: auto;
}

footer div {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 15px;
  margin-bottom: 15px;
}

footer a {
  color: #ffd5e1;
  text-decoration: none;
  font-size: 14px;
}

footer p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
}

/* Responsive Overrides */
@media (max-width: 650px) {
  header {
    flex-direction: column;
    gap: 12px;
    padding: 14px 20px;
  }

  nav {
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
  }

  nav a {
    font-size: 14px;
  }

  main {
    padding: 24px 16px 40px;
  }

  .card {
    padding: 24px 18px;
  }
}