:root {
  --night: #0d0b1e;
  --pink: #ec4899;
  --surface: #1a1530;
  --text: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.6);
  --text-hint: rgba(255, 255, 255, 0.45);
  --hairline: rgba(255, 255, 255, 0.08);
  --gradient: linear-gradient(135deg, #a855f7, #ec4899, #f59e0b);
  --max-width: 720px;
}

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

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-weight: 400;
  background: var(--night);
  color: var(--text);
  line-height: 1.65;
  font-size: 0.95rem;
}

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

.header {
  padding: 1rem 1.25rem;
  border-bottom: 0.5px solid var(--hairline);
  background: rgba(13, 11, 30, 0.95);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
}

.logo:hover { text-decoration: none; }
.logo img { width: 32px; height: 32px; border-radius: 8px; }

.back {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.1rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.updated {
  font-size: 0.85rem;
  color: var(--text-hint);
  margin-bottom: 2rem;
}

h2 {
  font-size: 1.1rem;
  font-weight: 500;
  margin: 2rem 0 0.75rem;
  color: var(--text);
}

h3 {
  font-size: 0.95rem;
  font-weight: 500;
  margin: 1.25rem 0 0.5rem;
  color: var(--text-secondary);
}

p, li {
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

ul, ol {
  padding-left: 1.25rem;
  margin-bottom: 1rem;
}

li { margin-bottom: 0.35rem; }

strong { color: var(--text); font-weight: 500; }

.notice {
  margin: 1.5rem 0;
  padding: 1rem 1.15rem;
  border-radius: 12px;
  background: var(--surface);
  border: 0.5px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
}

.notice strong { display: block; margin-bottom: 0.35rem; }

footer {
  padding: 2rem 1.25rem;
  border-top: 0.5px solid var(--hairline);
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-hint);
}

footer a { color: var(--text-secondary); margin: 0 0.75rem; }