@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;600;700&family=Noto+Sans+SC:wght@400;500;700&display=swap');

:root {
  --bg-1: #0b1218;
  --bg-2: #102433;
  --card: rgba(255, 255, 255, 0.05);
  --stroke: rgba(255, 255, 255, 0.12);
  --accent: #ffad33;
  --accent-2: #6de5ff;
  --text: #e9f1ff;
  --muted: #b5c2ce;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --radius-lg: 28px;
  --radius-md: 16px;
  --radius-sm: 10px;
}

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Space Grotesk', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 15% 20%, #1a3142 0 20%, transparent 35%),
              radial-gradient(circle at 80% 10%, #152332 0 18%, transparent 30%),
              linear-gradient(135deg, var(--bg-1), #071019 75%);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.map-bg {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  min-height: 100vh;
  z-index: 0;
  pointer-events: none;
  opacity: 0.28;
  mix-blend-mode: screen;
}

.hamburger {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--stroke);
  background: rgba(0, 0, 0, 0.4);
  display: grid;
  place-items: center;
  cursor: pointer;
  margin-right: 12px;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.hamburger:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.25);
  background: rgba(0, 0, 0, 0.55);
}
.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: #e9f1ff;
  position: relative;
}
.hamburger span::before,
.hamburger span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: #e9f1ff;
}
.hamburger span::before { top: -6px; }
.hamburger span::after { top: 6px; }

.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 12;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 260px;
  height: 100vh;
  background: rgba(7, 12, 18, 0.9);
  border-right: 1px solid var(--stroke);
  box-shadow: var(--shadow);
  z-index: 13;
  transform: translateX(-100%);
  transition: transform 0.25s ease;
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
}

/* 滚动条暗色方案 */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.35);
}
::-webkit-scrollbar-thumb {
  background: rgba(30, 30, 30, 0.85);
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(20, 20, 20, 0.95);
}
.drawer.open { transform: translateX(0); }
.drawer-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}
.drawer h3 {
  margin: 6px 0 10px;
  letter-spacing: 0.08em;
  color: #eaf2ff;
}
.drawer a {
  display: block;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.04);
  color: #eaf2ff;
  margin-bottom: 6px;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.drawer a:hover {
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
}

.drawer-tree {
  margin: 4px 0 8px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.04);
}
.drawer-tree ul {
  list-style: none;
  margin: 0;
  padding-left: 0;
}
.drawer-tree li {
  margin: 4px 0;
}
.drawer-tree .branch {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.25);
  color: #eaf2ff;
  cursor: pointer;
  user-select: none;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.drawer-tree .branch:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
}
.drawer-tree .caret {
  width: 10px;
  height: 10px;
  border-right: 2px solid #eaf2ff;
  border-bottom: 2px solid #eaf2ff;
  transform: rotate(-45deg);
  transition: transform 0.18s ease;
}
.drawer-tree .branch[aria-expanded="true"] .caret {
  transform: rotate(45deg);
}
.drawer-tree .children {
  margin-left: 18px;
  padding-left: 10px;
  border-left: 1px solid rgba(255, 255, 255, 0.12);
  display: none;
}
.drawer-tree .children.open {
  display: block;
}
.drawer-tree a.leaf {
  display: block;
  padding: 6px 10px;
  margin: 2px 0;
  border-radius: 8px;
  color: #cfe8ff;
  border: 1px solid transparent;
  background: transparent;
}
.drawer-tree a.leaf:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
  color: #eaf2ff;
}

.note-modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 20;
  background: rgba(0, 0, 0, 0.55);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.note-modal.open {
  opacity: 1;
  pointer-events: auto;
}
.note-card {
  width: min(420px, 92vw);
  background: rgba(6, 12, 18, 0.95);
  border: 1px solid var(--stroke);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 18px 20px 20px;
  color: #eaf2ff;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.note-card header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.note-card h4 {
  margin: 0;
}
.note-card button {
  background: transparent;
  border: 1px solid var(--stroke);
  color: #eaf2ff;
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
}
.note-card #note-desc {
  margin: 0;
  line-height: 1.6;
  color: #d9e5f2;
}
.note-card pre {
  display: block;
  background: #1e1e1e;
  color: #d4d4d4;
  padding: 16px 20px;
  border-radius: 8px;
  border: 1px solid #333;
  margin: 16px 0 0;
  border-left: 4px solid #569cd6;
  box-shadow: none;
  font-family: 'Fira Code', Consolas, monospace;
  font-size: 14px;
  line-height: 1.45;
  white-space: pre;
  word-break: normal;
  tab-size: 4;
  overflow-x: auto;
}

.top-nav,
.container {
  position: relative;
  z-index: 1;
}

.container {
  width: min(1200px, 92vw);
  margin: 0 auto;
  padding: 32px 0 64px;
}

.top-nav {
  width: 100%;
  margin: 0;
  padding: 16px clamp(12px, 4vw, 28px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  backdrop-filter: blur(12px);
  z-index: 10;
  box-sizing: border-box;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  display: flex;
  gap: 10px;
  align-items: center;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.logo-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 12px rgba(255, 173, 51, 0.6);
}

.nav-links {
  display: flex;
  gap: 14px;
  color: var(--muted);
}

.nav-links a {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.nav-links a:hover {
  color: var(--text);
  border-color: var(--stroke);
  background: rgba(255, 255, 255, 0.03);
}

.nav-links .nav-noita {
  color: #8fa7bb;
}
.nav-links .nav-noita:hover {
  border-color: rgba(143, 167, 187, 0.3);
}

.hero-block {
  position: relative;
  margin-top: 12px;
}

.hero-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  isolation: isolate;
  background: linear-gradient(135deg, rgba(255, 173, 51, 0.05), rgba(109, 229, 255, 0.05));
}

.hero-image {
  width: 100%;
  display: block;
  height: auto;
  filter: saturate(1.05) contrast(1.05);
}

.hero-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 8, 14, 0.25) 0%, rgba(5, 8, 14, 0.8) 100%);
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(20px, 6vw, 38px);
  gap: 18px;
}

.eyebrow {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--stroke);
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  font-size: 12px;
  color: var(--muted);
  width: fit-content;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.hero-title {
  font-size: clamp(32px, 4vw, 48px);
  margin: 0;
  letter-spacing: -0.8px;
}
.hero-title-strong {
  font-size: clamp(32px, 4vw, 44px);
  letter-spacing: 0.06em;
  text-transform: none;
}
.hero-title-strong .hero-name {
  display: inline-block;
  font-size: clamp(42px, 5.4vw, 64px);
  line-height: 1;
  padding: 6px 12px 4px;
  margin: 6px 8px;
  border-radius: 16px;
  background: linear-gradient(120deg, rgba(255, 239, 214, 0.32), rgba(214, 236, 255, 0.32));
  color: #0d121a;
  text-shadow:
    0 0 6px rgba(255, 255, 255, 0.6),
    0 0 14px rgba(255, 255, 255, 0.4),
    0 0 22px rgba(173, 226, 255, 0.35);
  box-shadow: 0 8px 14px rgba(0, 0, 0, 0.12);
}

.hero-subtitle {
  margin: 0;
  color: var(--muted);
  max-width: 760px;
  font-size: 15px;
}
.hero-subtitle .muted-inline {
  color: rgba(233, 241, 255, 0.6);
}

.contact-link {
  color: var(--accent);
  font-weight: 600;
}

.contact-link:hover {
  color: #ffd166;
}

.luogu-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.luogu-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.luogu-stat {
  padding: 10px 12px;
  border: 1px solid var(--stroke);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.luogu-stat .label {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 4px;
}

.luogu-stat strong {
  font-size: 24px;
  letter-spacing: 0.02em;
}

.luogu-last {
  margin: 0;
  color: var(--muted);
}

.heatmap-wrap {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px;
  align-items: start;
}

.heatmap-days-col {
  display: grid;
  grid-template-rows: repeat(7, 16px);
  gap: 4px;
  font-size: 12px;
  color: var(--muted);
  padding-top: 2px;
}

.heatmap-weeks {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 20px;
  gap: 4px;
  overflow-x: hidden;
  padding-bottom: 4px;
}

.heatmap-week-col {
  display: grid;
  grid-template-rows: auto 16px;
  gap: 4px;
  justify-items: center;
}

.heatmap-week {
  display: grid;
  grid-template-rows: repeat(7, 16px);
  gap: 4px;
}

.month-label {
  font-size: 11px;
  color: var(--muted);
}

.month-label.empty {
  visibility: hidden;
}

.heatmap-legend {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
  overflow-x: auto;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 8px;
}

.legend-title {
  font-weight: 600;
  color: var(--text);
}

.legend-swatch {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 3px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.legend-label {
  margin-right: 6px;
}

.opacity-legend {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--muted);
}

.opacity-swatch {
  width: 16px;
  height: 14px;
  border-radius: 3px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: color-mix(in srgb, var(--swatch-bg, #f6c343) calc(var(--swatch-alpha, 0.2) * 100%), transparent);
}

.luogu-links {
  display: flex;
  justify-content: flex-end;
}

.link-quiet {
  color: var(--muted);
  font-weight: 500;
  padding: 6px 10px;
  border-radius: 10px;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.03);
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.link-quiet:hover {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
}

.heatmap-legend {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
  overflow-x: auto;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 8px;
}

.legend-label {
  margin-right: 6px;
}

.heat-cell {
  width: 16px;
  height: 16px;
  border-radius: 3px;
  border: 1px solid rgba(255, 255, 255, 0.04);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(255, 173, 51, 0.9), rgba(109, 229, 255, 0.95));
  color: #0d1116;
  font-weight: 700;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.button-pill:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.button-ghost {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.btn-hobbies {
  border-color: rgba(109, 229, 255, 0.45);
  background: rgba(109, 229, 255, 0.1);
  color: #eaf8ff;
}

.btn-profile {
  border-color: rgba(255, 194, 106, 0.5);
  background: rgba(255, 194, 106, 0.12);
  color: #ffe8c0;
}

.btn-noita {
  border-color: rgba(143, 167, 187, 0.35);
  background: rgba(143, 167, 187, 0.12);
  color: #cfd9e3;
}

.button-ghost:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.08);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  padding: 8px 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--stroke);
  color: var(--muted);
  font-size: 14px;
}

.chip-accent {
  position: relative;
  background: linear-gradient(135deg, rgba(255, 173, 51, 0.18), rgba(109, 229, 255, 0.18));
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fefefe;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35), 0 0 12px rgba(109, 229, 255, 0.35);
}

.inline-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  margin-right: 6px;
}

.section {
  margin-top: 48px;
}

.section h2 {
  margin: 0 0 14px;
  letter-spacing: -0.4px;
}

.section p {
  margin: 0 0 18px;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.glass-card {
  background: var(--card);
  border: 1px solid var(--stroke);
  border-radius: var(--radius-md);
  padding: 18px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.glass-card h3 {
  margin: 0 0 10px;
}

.glass-card p {
  margin: 0 0 10px;
  color: var(--muted);
}

.tag {
  display: inline-flex;
  padding: 6px 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--stroke);
  border-radius: 10px;
  font-size: 13px;
  color: var(--muted);
  margin-right: 6px;
}

.list {
  padding-left: 16px;
  color: var(--muted);
  margin: 0;
}

.list li {
  margin-bottom: 6px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 10px;
  border: 1px solid var(--stroke);
  font-size: 13px;
  color: var(--muted);
}

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.12), transparent);
  margin: 18px 0;
}

.page-hero {
  margin: 18px 0 24px;
}

.page-hero h1 {
  margin: 8px 0 10px;
  letter-spacing: -0.6px;
}

.page-hero p {
  margin: 0;
  color: var(--muted);
  max-width: 760px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 18px;
}

@media (max-width: 700px) {
  .top-nav {
    padding-inline: 14px;
  }
  .nav-links {
    gap: 8px;
    font-size: 14px;
  }
  .hero-overlay {
    padding: 20px;
  }
  .container {
    padding-inline: 16px;
  }
}

.slider {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  background: rgba(255, 255, 255, 0.02);
}

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.slide.active {
  opacity: 1;
  position: relative;
}

.slide img {
  width: 100%;
  height: auto;
  display: block;
}

.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--stroke);
  background: rgba(0, 0, 0, 0.45);
  color: #e9f1ff;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all 0.2s ease;
  z-index: 4;
}

.slider-btn:hover {
  transform: translateY(-50%) scale(1.04);
  border-color: rgba(255, 255, 255, 0.25);
  background: rgba(0, 0, 0, 0.65);
}

.slider-btn.prev { left: 16px; }
.slider-btn.next { right: 16px; }

.slider .label {
  position: absolute;
  left: 14px;
  bottom: 14px;
  padding: 8px 12px;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.55);
  color: #e8f2ff;
  border: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 13px;
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.media-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: var(--shadow);
}

.media-card img {
  width: 100%;
  display: block;
  height: auto;
}

.game-intro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin: 10px 0 6px;
}

.game-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--stroke);
  border-radius: var(--radius-sm);
  padding: 12px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.game-cover {
  border-radius: 10px;
  padding: 12px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.1px;
  color: #0d1116;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.game-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.noita-cover {
  background: linear-gradient(135deg, #ff9d66, #ffd166);
}

.factorio-cover {
  background: linear-gradient(135deg, #ffb347, #ffcc33);
}

.balatro-cover {
  background: linear-gradient(135deg, #ff6fb7, #b488ff);
}

.sts-cover {
  background: linear-gradient(135deg, #65d6ff, #8cf1ff);
}

.nova-cover {
  background: linear-gradient(135deg, #6de5ff, #9ef1c0);
}

.noita-layout {
  padding-block: 28px 72px;
}

.noita-hero {
  margin: 8px 0 26px;
  padding: clamp(18px, 4vw, 30px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.03), rgba(109, 229, 255, 0.04));
  box-shadow: var(--shadow);
}

.noita-meta {
  letter-spacing: 0.26em;
  text-transform: uppercase;
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 8px;
}

.noita-title {
  margin: 0;
  font-size: clamp(32px, 4vw, 46px);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #f6f8fb;
}

.noita-lede {
  margin: 10px 0 0;
  color: var(--muted);
  max-width: 760px;
  letter-spacing: 0.04em;
}

.noita-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 18px;
  margin-top: 8px;
}

.noita-section-card {
  padding: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.noita-section-card.cold {
  background: linear-gradient(150deg, rgba(23, 35, 48, 0.7), rgba(34, 56, 78, 0.52));
  border-color: rgba(255, 255, 255, 0.12);
}

.noita-section-head {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.noita-index {
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  padding: 6px 10px;
  border: 1px solid var(--stroke);
  border-radius: 14px;
  color: var(--muted);
}

.noita-section-head h2 {
  margin: 0;
  letter-spacing: 0.1em;
}

.noita-section-head p {
  margin: 6px 0 0;
  color: var(--muted);
  max-width: 520px;
}

.noita-section-card .slider {
  margin-top: 10px;
  border-radius: var(--radius-md);
  border: 1px solid var(--stroke);
  background: rgba(0, 0, 0, 0.3);
}

.noita-section-card .slide img {
  filter: saturate(1.05) contrast(1.08);
}

.study-dual {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 18px;
  margin-top: 22px;
}

.study-panel {
  padding: 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--stroke);
  background: var(--card);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.study-panel.current {
  background: linear-gradient(140deg, rgba(255, 173, 51, 0.18), rgba(109, 229, 255, 0.14));
  border-color: rgba(255, 255, 255, 0.2);
}

.study-panel.future {
  background: linear-gradient(140deg, rgba(20, 38, 56, 0.72), rgba(38, 62, 82, 0.58));
  border-color: rgba(255, 255, 255, 0.12);
}

.study-kicker {
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--muted);
}

.study-panel h1 {
  margin: 4px 0;
  font-size: clamp(28px, 3.2vw, 34px);
  letter-spacing: 0.08em;
}

.study-lede {
  margin: 0 0 4px;
  color: var(--muted);
}

.study-block {
  background: rgba(0, 0, 0, 0.18);
  border: 1px solid var(--stroke);
  border-radius: var(--radius-md);
  padding: 12px 14px;
}

.study-block h3 {
  margin: 0 0 8px;
  letter-spacing: 0.04em;
}

.study-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.chip-cool {
  background: linear-gradient(135deg, rgba(109, 229, 255, 0.18), rgba(158, 241, 192, 0.18));
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #e9f4ff;
}

.mindmap-section {
  margin-top: 36px;
  padding: 26px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--stroke);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.04), rgba(109, 229, 255, 0.08));
  box-shadow: var(--shadow);
}

.mindmap-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 10px;
}

.mindmap-head h2 {
  margin: 6px 0 6px;
  letter-spacing: 0.04em;
}

.mindmap-legend {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 12px;
  border: 1px solid var(--stroke);
  background: rgba(0, 0, 0, 0.2);
  color: var(--muted);
  font-size: 13px;
}

.mindmap-legend .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.mindmap-legend .legend-text {
  margin-right: 8px;
}

.mindmap-legend .dot.learned {
  background: linear-gradient(135deg, rgba(255, 173, 51, 0.8), rgba(109, 229, 255, 0.8));
  border-color: rgba(255, 255, 255, 0.35);
  box-shadow: 0 0 6px rgba(255, 173, 51, 0.5);
}

.mindmap-legend .dot.pending {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: none;
}

.mindmap-tree {
  overflow-x: auto;
  padding-bottom: 10px;
  font-size: 15px;
}

.tree {
  list-style: none;
  padding-left: 0;
  margin: 0;
  position: relative;
  font-size: 14px;
}

.tree ul {
  list-style: none;
  margin: 8px 0 8px 22px;
  padding-left: 16px;
  border-left: 1.2px solid rgba(255, 255, 255, 0.14);
}

.tree li {
  position: relative;
  margin: 10px 0;
}

.tree li::before {
  content: '';
  position: absolute;
  left: -16px;
  top: 14px;
  width: 16px;
  height: 1.2px;
  background: rgba(255, 255, 255, 0.14);
}

.node {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-radius: 14px;
  border: 1px solid var(--stroke);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  line-height: 1.4;
}

.node.learned {
  background: linear-gradient(135deg, rgba(255, 173, 51, 0.25), rgba(109, 229, 255, 0.2));
  border-color: rgba(255, 255, 255, 0.22);
  color: #0d1116;
  font-weight: 700;
}

.node.pending {
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
}

.node.root {
  font-size: 18px;
  padding: 12px 16px;
  letter-spacing: 0.04em;
}

.node.level-2 {
  font-size: 16px;
  letter-spacing: 0.01em;
}

.node.pending.level-2 {
  border-style: dashed;
  border-color: rgba(255, 255, 255, 0.26);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.05);
}