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

:root {
  --netify-coral: #fb2523;
  --netify-rose: #ff4d6d;
  --netify-rose-soft: #fff0f3;
  --text: #1a1a1e;
  --text-secondary: #5c5c66;
  --text-muted: #8e8e98;
  --surface: #ffffff;
  --surface-elevated: #fafafa;
  --border: rgba(26, 26, 30, 0.08);
  --shadow-sm: 0 1px 2px rgba(26, 26, 30, 0.04);
  --shadow-md: 0 8px 24px rgba(251, 37, 35, 0.08), 0 2px 8px rgba(26, 26, 30, 0.06);
  --radius: 16px;
  --radius-lg: 22px;
}

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  color: var(--text);
  background: linear-gradient(165deg, #fff5f6 0%, #fefcfd 45%, #f8f9fc 100%);
  min-height: 100vh;
  padding: 24px 20px 48px;
  max-width: 760px;
  margin: 0 auto;
  -webkit-font-smoothing: antialiased;
}

header {
  text-align: center;
  padding: 40px 20px 28px;
  margin-bottom: 8px;
}

.logo {
  font-size: clamp(2rem, 5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text);
  line-height: 1.1;
}

.logo span {
  background: linear-gradient(135deg, var(--netify-coral) 0%, var(--netify-rose) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

header .tagline {
  color: var(--text-muted);
  font-size: 0.9375rem;
  margin-top: 10px;
  font-weight: 500;
  letter-spacing: 0.01em;
}

nav {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 32px;
  flex-wrap: wrap;
  padding: 6px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 100px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  max-width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

nav a {
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 100px;
  transition: color 0.2s ease, background 0.2s ease, transform 0.15s ease;
  text-decoration: none;
}

nav a:hover {
  background: var(--surface-elevated);
  color: var(--text);
}

nav a.active {
  background: linear-gradient(135deg, var(--netify-coral), #e01e1c);
  color: #fff;
  box-shadow: 0 4px 14px rgba(251, 37, 35, 0.35);
}

main {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 5vw, 40px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}

.site-banner {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: linear-gradient(135deg, var(--netify-rose-soft) 0%, #fff8f9 50%, #fff 100%);
  border: 1px solid rgba(255, 77, 109, 0.18);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin-bottom: 28px;
  position: relative;
  overflow: hidden;
}

.site-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--netify-rose), var(--netify-coral));
  border-radius: 4px 0 0 4px;
}

.site-banner-icon {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  background: rgba(255, 77, 109, 0.12);
  border-radius: 12px;
  color: var(--netify-rose);
}

.site-banner-text .site-banner-title {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.site-banner-text p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 0;
  line-height: 1.6;
}

.site-banner-sub {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed rgba(255, 77, 109, 0.2);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

h1 {
  font-size: clamp(1.6rem, 4vw, 1.875rem);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: -0.03em;
}

.last-updated {
  color: var(--text-muted);
  font-size: 0.8125rem;
  margin-bottom: 28px;
}

h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin-top: 36px;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

p {
  margin-bottom: 14px;
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

ul,
ol {
  margin-bottom: 16px;
  padding-left: 22px;
}

li {
  margin-bottom: 8px;
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

a {
  color: var(--netify-rose);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 77, 109, 0.35);
  transition: color 0.15s ease, border-color 0.15s ease;
}

a:hover {
  color: var(--netify-coral);
  border-bottom-color: var(--netify-coral);
}

.notice-banner {
  background: linear-gradient(135deg, #fffbf0 0%, #fff8e8 100%);
  border: 1px solid #f0e0c4;
  border-radius: var(--radius);
  padding: 18px 22px;
  margin-bottom: 28px;
  border-left: 4px solid #e8a838;
}

.notice-banner h3 {
  font-size: 0.9rem;
  color: #7a5a20;
  margin-bottom: 10px;
  font-weight: 700;
}

.notice-banner ul {
  margin: 0;
  padding-left: 20px;
}

.notice-banner li {
  font-size: 0.875rem;
  color: #5a4a30;
  line-height: 1.55;
  margin-bottom: 6px;
}

.notice-banner li:last-child {
  margin-bottom: 0;
}

.intro-box {
  background: linear-gradient(145deg, var(--netify-rose-soft) 0%, #fff 100%);
  border: 1px solid rgba(255, 77, 109, 0.12);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 32px;
}

.intro-box p {
  margin-bottom: 0;
  color: var(--text-secondary);
}

.contact-card {
  background: var(--surface-elevated);
  border-radius: var(--radius);
  padding: 28px;
  margin: 28px 0;
  text-align: center;
  border: 1px solid var(--border);
}

.contact-card h3 {
  font-size: 1.05rem;
  margin-bottom: 12px;
}

.contact-card a {
  font-size: 1.1rem;
  font-weight: 600;
  border-bottom: none;
}

.contact-card a:hover {
  text-decoration: underline;
}

.contact-card .contact-note {
  margin-top: 10px;
  margin-bottom: 0;
  color: var(--text-muted);
  font-size: 0.8125rem;
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 20px 0;
}

.info-card {
  background: var(--surface-elevated);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  border: 1px solid var(--border);
  transition: transform 0.15s ease;
}

.info-card:hover {
  transform: translateY(-2px);
}

.info-card .label {
  font-size: 0.6875rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.info-card .value {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  margin-top: 6px;
  word-break: break-word;
}

.faq-item {
  background: var(--surface-elevated);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 12px;
  border: 1px solid var(--border);
}

.faq-item h3 {
  font-size: 0.9375rem;
  margin-bottom: 8px;
  color: var(--text);
}

.faq-item p {
  margin-bottom: 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.highlight-box {
  background: var(--surface-elevated);
  border-left: 4px solid var(--netify-rose);
  border-radius: 0 12px 12px 0;
  padding: 16px 20px;
  margin: 20px 0;
}

.highlight-box p {
  margin-bottom: 0;
  font-size: 0.875rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 0.875rem;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
}

th {
  text-align: left;
  padding: 12px 16px;
  background: var(--surface-elevated);
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

tr:last-child td {
  border-bottom: none;
}

footer {
  margin-top: 40px;
  padding: 28px 20px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8125rem;
  border-top: 1px solid var(--border);
}

footer p {
  color: var(--text-muted);
  font-size: 0.8125rem;
  margin-bottom: 8px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 16px;
  margin-top: 12px;
}

footer a {
  color: var(--text-secondary);
  font-weight: 500;
  border-bottom: none;
}

footer a:hover {
  color: var(--netify-rose);
}

.support-lede {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

@media (max-width: 600px) {
  body {
    padding: 16px 14px 40px;
  }

  header {
    padding: 28px 12px 20px;
  }

  main {
    padding: 20px 18px;
  }

  .site-banner {
    flex-direction: column;
    gap: 12px;
  }

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

  nav a {
    font-size: 0.75rem;
    padding: 8px 14px;
  }
}