:root {
  color-scheme: dark;
  --bg: #07080d;
  --bg-2: #0d0f1a;
  --panel: rgba(22, 26, 38, 0.82);
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.18);
  --text: #eef1fb;
  --muted: #9aa2ba;
  --accent: #06d6a0;
  --accent-2: #ef476f;
  --accent-3: #ffd166;
  --accent-4: #4d9de0;
  --font-display: 'Orbitron', 'Rajdhani', system-ui, sans-serif;
  --font-ui: 'Rajdhani', system-ui, -apple-system, 'Segoe UI', 'Malgun Gothic', sans-serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  min-height: 100vh;
  background: var(--bg);
  background-image:
    radial-gradient(680px 460px at 14% -6%, rgba(6, 214, 160, 0.14), transparent 60%),
    radial-gradient(620px 480px at 88% 8%, rgba(239, 71, 111, 0.12), transparent 60%),
    radial-gradient(720px 560px at 50% 108%, rgba(77, 157, 224, 0.12), transparent 60%);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-underline-offset: 2px; }
a:hover { color: var(--accent-3); }

/* ---------- 헤더 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.site-logo {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  letter-spacing: 0.04em;
  text-decoration: none;
  background: linear-gradient(90deg, #ef476f, #ffd166, #06d6a0, #4d9de0);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.site-nav {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.site-nav a {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  padding: 6px 11px;
  border-radius: 999px;
}
.site-nav a:hover { color: var(--text); background: rgba(255, 255, 255, 0.06); }
.site-nav a[aria-current="page"] { color: var(--accent); background: rgba(6, 214, 160, 0.12); }

/* ---------- 본문 ---------- */
.page {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 22px 70px;
}
.page > header { margin-bottom: 30px; }
.page h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 30px;
  letter-spacing: 0.01em;
  margin: 0 0 8px;
}
.page .lede {
  color: var(--muted);
  font-size: 15.5px;
  margin: 0;
}
.page .meta {
  margin-top: 10px;
  font-size: 12.5px;
  color: #6b7390;
}

.prose h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  margin: 34px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}
.prose h3 { font-size: 16px; margin: 22px 0 8px; color: var(--text); }
.prose p { margin: 12px 0; color: #cfd4e6; }
.prose ul, .prose ol { margin: 12px 0; padding-left: 22px; color: #cfd4e6; }
.prose li { margin: 7px 0; }
.prose strong { color: var(--text); }

.card-box {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px 20px;
  margin: 16px 0;
}
.card-box h3 { margin-top: 0; color: var(--accent); }

.style-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 18px 0;
}
.style-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px 20px;
}
.style-card .tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 8px;
}
.style-card.lane .tag { color: var(--accent-2); background: rgba(239, 71, 111, 0.14); }
.style-card.pulse .tag { color: var(--accent); background: rgba(6, 214, 160, 0.14); }
.style-card.melody .tag { color: #c9a2ff; background: rgba(201, 162, 255, 0.14); }
.style-card h3 { margin: 0 0 8px; }
.style-card p { margin: 6px 0; font-size: 14.5px; }

.changelog-item {
  position: relative;
  padding: 2px 0 22px 22px;
  border-left: 2px solid var(--line);
}
.changelog-item:last-child { border-left-color: transparent; padding-bottom: 0; }
.changelog-item::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(6, 214, 160, 0.6);
}
.changelog-item time {
  display: block;
  font-family: var(--font-display);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
.changelog-item h3 { margin: 0 0 6px; }
.changelog-item p { margin: 4px 0; font-size: 14.5px; color: #cfd4e6; }

.contact-box {
  text-align: center;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 26px 20px;
  margin: 22px 0;
}
.contact-box .email {
  display: inline-block;
  margin-top: 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
}

.btn-home {
  display: inline-block;
  margin-top: 8px;
  padding: 11px 22px;
  border-radius: 999px;
  background: linear-gradient(135deg, #06d6a0, #0ec89b);
  color: #04241b;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 14px;
  text-decoration: none;
}
.btn-home:hover { color: #04241b; filter: brightness(1.08); }

/* ---------- 광고 슬롯 ---------- */
.ad-slot {
  max-width: 760px;
  margin: 28px auto;
  padding: 0 22px;
}
.ad-slot__label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: #6b7390;
  margin-bottom: 4px;
}
.ad-slot .adsbygoogle { display: block; min-height: 100px; }

/* ---------- 푸터 ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 22px;
  text-align: center;
}
.site-footer nav {
  display: flex;
  gap: 6px 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.site-footer nav a {
  font-size: 12.5px;
  color: var(--muted);
  text-decoration: none;
}
.site-footer nav a:hover { color: var(--accent); }
.site-footer p {
  margin: 0;
  font-size: 11.5px;
  color: #616a86;
}

@media (max-width: 560px) {
  .page h1 { font-size: 24px; }
  .site-header__inner { justify-content: center; text-align: center; }
}