:root {
  --bg-1: #090d1a;
  --bg-2: #121a2b;
  --panel: rgba(17, 24, 39, 0.76);
  --panel-border: rgba(148, 163, 184, 0.26);
  --text: #e2e8f0;
  --muted: #a6b4d0;
  --accent: #7dd3fc;
  --accent-2: #a78bfa;
  --accent-3: #fbbf24;
  --shadow: rgba(15, 23, 42, 0.7);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
  font-family: "Segoe UI", "Hiragino Sans", "Yu Gothic", sans-serif;
  background: linear-gradient(135deg, var(--bg-1), var(--bg-2) 42%, #0f172a 100%);
  color: var(--text);
}

body {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
}

.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.4;
  z-index: 0;
}

.glow-1 {
  width: 360px;
  height: 360px;
  background: rgba(125, 211, 252, 0.4);
  top: 10%;
  left: 6%;
}

.glow-2 {
  width: 420px;
  height: 420px;
  background: rgba(167, 139, 250, 0.35);
  right: 8%;
  bottom: 12%;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(148, 163, 184, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(circle at center, black 48%, transparent 100%);
  z-index: 0;
}

.page-shell {
  position: relative;
  z-index: 1;
  max-width: 980px;
  margin: 0 auto;
  padding: 80px 24px 60px;
}

.profile {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 28px;
  text-align: center;
}

.avatar {
  width: 92px;
  height: 92px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 2.4rem;
  font-weight: 800;
  color: #0f172a;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 16px 35px rgba(125, 211, 252, 0.35);
  margin-bottom: 16px;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.5rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.subtitle {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.96rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.link-panel {
  background: rgba(15, 23, 42, 0.62);
  border: 1px solid var(--panel-border);
  border-radius: 28px;
  padding: 22px;
  box-shadow: 0 28px 60px var(--shadow);
  backdrop-filter: blur(10px);
}

.link-group {
  display: none;
}

.link-group.active {
  display: block;
}

.group-header {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.link-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.link-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 15px 16px;
  border-radius: 16px;
  color: var(--text);
  text-decoration: none;
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.95), rgba(15, 23, 42, 0.8));
  border: 1px solid rgba(148, 163, 184, 0.14);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.link-card:hover {
  transform: translateY(-2px);
  border-color: rgba(125, 211, 252, 0.5);
  box-shadow: 0 18px 30px rgba(14, 165, 233, 0.15);
}

.link-card .index {
  display: inline-flex;
  width: 32px;
  height: 32px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  font-size: 0.8rem;
  font-weight: 700;
  color: #0f172a;
  background: linear-gradient(135deg, var(--accent-3), #f59e0b);
}

.link-card .label {
  flex: 1;
  font-size: 0.96rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.link-card .arrow {
  color: var(--accent);
  font-size: 1.2rem;
  font-weight: 700;
}

.menu-wrapper {
  position: fixed;
  left: 22px;
  bottom: 22px;
  z-index: 3;
}

.menu-button {
  border: 1px solid rgba(125, 211, 252, 0.35);
  background: rgba(15, 23, 42, 0.8);
  color: var(--text);
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
  box-shadow: 0 15px 30px rgba(15, 23, 42, 0.45);
  transition: transform 0.2s ease, background 0.2s ease;
}

.menu-button:hover {
  transform: translateY(-1px);
  background: rgba(30, 41, 59, 0.9);
}

.menu-panel {
  position: absolute;
  left: 0;
  bottom: 58px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 10px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 16px;
  background: rgba(15, 23, 42, 0.9);
  box-shadow: 0 24px 40px rgba(15, 23, 42, 0.5);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.menu-panel.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.category-btn {
  border: 1px solid rgba(148, 163, 184, 0.14);
  background: rgba(30, 41, 59, 0.8);
  color: var(--text);
  padding: 10px 18px;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.category-btn.active,
.category-btn:hover {
  background: linear-gradient(135deg, rgba(125, 211, 252, 0.18), rgba(167, 139, 250, 0.18));
  border-color: rgba(125, 211, 252, 0.5);
}

@media (max-width: 720px) {
  .page-shell {
    padding-top: 52px;
  }

  .link-panel {
    padding: 16px;
  }

  .link-list {
    grid-template-columns: 1fr;
  }
}