:root {
  --bg: #07111f;
  --bg2: #0d1628;
  --panel: rgba(10, 18, 34, 0.86);
  --panel-2: rgba(255, 255, 255, 0.05);
  --panel-3: rgba(255, 255, 255, 0.08);
  --text: #f5f7ff;
  --muted: #9baccf;
  --accent: #7c9cff;
  --accent2: #57e3c2;
  --danger: #ff6b81;
  --border: rgba(255,255,255,0.09);
  --shadow: 0 30px 60px rgba(0,0,0,0.28);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, Pretendard, system-ui, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%);
}
.page-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 10% 10%, rgba(124,156,255,0.18), transparent 22%),
    radial-gradient(circle at 90% 10%, rgba(87,227,194,0.14), transparent 18%),
    radial-gradient(circle at 50% 100%, rgba(124,156,255,0.1), transparent 22%);
}
.shell {
  position: relative;
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr);
  gap: 22px;
  padding: 22px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}
.premium {
  background: linear-gradient(135deg, rgba(12,20,38,0.94), rgba(18,30,55,0.9));
}
.sidebar {
  position: sticky;
  top: 22px;
  height: calc(100vh - 44px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.badge, .eyebrow {
  display: inline-flex;
  color: var(--accent2);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
h1, h2, h3, h4, p { margin-top: 0; }
.sidebar nav {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}
.sidebar nav a,
.side-footer a {
  color: var(--text);
  text-decoration: none;
}
.sidebar nav a {
  padding: 14px 16px;
  border-radius: 15px;
  background: var(--panel-2);
  border: 1px solid var(--border);
}
.side-footer {
  display: grid;
  gap: 8px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}
.side-footer span,
.muted,
.hero-text,
.post-meta,
.server-grid span,
.hero-stat-card span,
.public-box span { color: var(--muted); }
.content {
  display: grid;
  gap: 22px;
}
.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 22px;
  align-items: center;
  min-height: 340px;
}
.hero-copy h2 {
  font-size: clamp(32px, 5vw, 54px);
  line-height: 1.05;
  margin-bottom: 16px;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}
.cta {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 18px;
  border-radius: 16px;
  font-weight: 700;
}
.cta.primary {
  background: linear-gradient(135deg, var(--accent), #5572ff);
  color: white;
}
.cta.ghost {
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
}
.hero-panel {
  display: grid;
  gap: 14px;
}
.hero-stat-card,
.server-grid div,
.public-box,
.feature-card,
.quick-link,
.note-row,
.post-card,
.mini-list li {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 18px;
}
.hero-stat-card {
  padding: 20px;
}
.hero-stat-card strong {
  display: block;
  font-size: 22px;
  margin-top: 8px;
  word-break: break-word;
}
.hero-stat-card.accent {
  background: linear-gradient(135deg, rgba(124,156,255,0.18), rgba(87,227,194,0.12));
}
.grid.two,
.grid.three,
.board-layout,
.server-grid,
.link-grid {
  display: grid;
  gap: 18px;
}
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.board-layout { grid-template-columns: 1.2fr 0.8fr; }
.server-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.link-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.feature-card { padding: 22px; }
.status-line {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 16px;
}
.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent2);
  box-shadow: 0 0 18px var(--accent2);
}
.mini-list,
.post-list {
  display: grid;
  gap: 10px;
  list-style: none;
  padding: 0;
}
.mini-list li { padding: 14px 16px; }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.button-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.quick-link {
  text-decoration: none;
  color: var(--text);
  padding: 20px;
  display: grid;
  gap: 10px;
}
.quick-link b {
  justify-self: end;
  font-size: 20px;
}
.notes-list {
  display: grid;
  gap: 12px;
}
.note-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  padding: 10px;
}
input, textarea, button {
  font: inherit;
}
input, textarea {
  width: 100%;
  color: var(--text);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px 16px;
}
button {
  background: linear-gradient(135deg, var(--accent), #5b77ff);
  color: white;
  border: 0;
  border-radius: 16px;
  padding: 12px 18px;
  font-weight: 700;
  cursor: pointer;
}
button.secondary {
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--border);
}
button.danger {
  background: linear-gradient(135deg, var(--danger), #ff4d71);
}
button.small { padding: 10px 12px; }
.post-card { padding: 18px; }
.post-card h4 { margin-bottom: 8px; }
.post-meta { font-size: 13px; margin-bottom: 10px; }
.post-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 14px;
}
.post-form {
  display: grid;
  gap: 12px;
}
.sticky-card {
  position: sticky;
  top: 22px;
  height: fit-content;
}
.public-box {
  margin-top: 18px;
  padding: 18px;
  display: grid;
  gap: 8px;
}
.public-box a {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  word-break: break-all;
}
@media (max-width: 1200px) {
  .shell,
  .hero,
  .grid.two,
  .grid.three,
  .board-layout { grid-template-columns: 1fr; }
  .sidebar {
    position: static;
    height: auto;
  }
  .sticky-card { position: static; }
}
@media (max-width: 820px) {
  .shell { padding: 14px; }
  .server-grid,
  .link-grid { grid-template-columns: 1fr; }
}