:root {
  --bg: #0d0f16;
  --bg-alt: #151926;
  --bg-code: #1b2133;
  --fg: #e8ecf6;
  --fg-dim: #9aa5b8;
  --accent: #5b8cff;
  --accent-2: #8a5cff;
  --accent-3: #2fd6c4;
  --border: #252c3f;
  --green: #3ad078;
  --yellow: #eac54f;
  --red: #ef6a60;
  --souls: #ff7a59;
  --miyo: #4fc3f7;
  --ue: #a78bfa;
  --re: #ffb74d;
  --mt: #66bb6a;
  --sidebar-w: 260px;
  --glow: 0 8px 30px rgba(91, 140, 255, 0.25);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.75;
  min-height: 100vh;
}

/* ---------- 动态背景 ---------- */
.bg-orbs {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  pointer-events: none;
}

.orb { position: absolute; border-radius: 50%; filter: blur(85px); }

.orb-1 { width: 440px; height: 440px; background: rgba(43, 92, 255, 0.32); top: -140px; left: 6%; animation: drift 24s ease-in-out infinite alternate; }
.orb-2 { width: 380px; height: 380px; background: rgba(138, 92, 255, 0.26); bottom: -160px; right: 4%; animation: drift 28s ease-in-out infinite alternate-reverse; }
.orb-3 { width: 300px; height: 300px; background: rgba(47, 214, 196, 0.18); top: 38%; left: 56%; animation: drift 32s ease-in-out infinite alternate; }

@keyframes drift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(70px, 46px) scale(1.16); }
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse 95% 62% at 50% 0%, black 25%, transparent 78%);
  mask-image: radial-gradient(ellipse 95% 62% at 50% 0%, black 25%, transparent 78%);
}

::selection { background: rgba(91, 140, 255, 0.35); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: #37415e; }
::-webkit-scrollbar-track { background: transparent; }

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

/* ---------- 顶部导航 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 14px;
  height: 58px;
  padding: 0 22px;
  background: rgba(13, 15, 22, 0.72);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.topbar.scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
}

.topbar .logo {
  font-weight: 700;
  font-size: 17px;
  color: var(--fg);
  display: flex;
  align-items: center;
  gap: 9px;
  letter-spacing: 0.3px;
}

.topbar .logo .dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  animation: dotPulse 2.6s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(91, 140, 255, 0.45), 0 0 12px rgba(91, 140, 255, 0.7); }
  50% { box-shadow: 0 0 0 7px rgba(91, 140, 255, 0), 0 0 12px rgba(91, 140, 255, 0.7); }
}

.topbar .nav-links { margin-left: auto; display: flex; gap: 4px; }
.topbar .nav-links a {
  color: var(--fg-dim);
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 8px;
  transition: color 0.15s, background 0.15s;
}
.topbar .nav-links a:hover { color: var(--fg); background: rgba(255, 255, 255, 0.05); text-decoration: none; }

.menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--fg);
  font-size: 18px;
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
}

/* ---------- 布局 ---------- */
.layout { display: flex; min-height: calc(100vh - 58px); }

.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  padding: 22px 12px;
  border-right: 1px solid var(--border);
  background: rgba(21, 25, 38, 0.5);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 58px;
  height: calc(100vh - 58px);
  overflow-y: auto;
}

.sidebar h4 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--fg-dim);
  padding: 14px 12px 6px;
}

.sidebar ul { list-style: none; }

.sidebar li a {
  display: block;
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--fg-dim);
  font-size: 14px;
  border-left: 3px solid transparent;
  transition: color 0.15s, background 0.15s, padding-left 0.15s;
}

.sidebar li a:hover { color: var(--fg); background: rgba(91, 140, 255, 0.09); text-decoration: none; padding-left: 15px; }

.sidebar li a.active {
  color: var(--accent);
  background: linear-gradient(90deg, rgba(91, 140, 255, 0.16), rgba(91, 140, 255, 0.04));
  border-left-color: var(--accent);
  font-weight: 600;
}

.content {
  flex: 1;
  min-width: 0;
  padding: 44px 48px 80px;
  max-width: 1000px;
}

/* ---------- 正文排版 ---------- */
.content h1 {
  font-size: 34px;
  margin-bottom: 10px;
  line-height: 1.3;
  background: linear-gradient(110deg, var(--fg) 20%, var(--accent) 55%, var(--accent-2) 80%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
  animation: shimmer 6s linear infinite;
}

@keyframes shimmer { to { background-position: 200% center; } }

.content h2 {
  font-size: 22px;
  margin: 46px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.content h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.6s ease 0.2s;
}

.reveal.in h2::after, h2.reveal.in::after { width: 54px; }

.content h3 { font-size: 18px; margin: 28px 0 10px; color: var(--accent); }
.content p { margin: 12px 0; color: var(--fg); }
.content ul, .content ol { margin: 12px 0 12px 24px; }
.content li { margin: 6px 0; }
.content li::marker { color: var(--accent); }
.content strong { color: var(--fg); }
.content em { color: var(--yellow); font-style: normal; }

.content blockquote {
  margin: 18px 0;
  padding: 14px 18px;
  border-left: 4px solid var(--yellow);
  background: linear-gradient(90deg, rgba(234, 197, 79, 0.08), transparent);
  border-radius: 0 10px 10px 0;
  color: var(--fg-dim);
}

.content blockquote.tip {
  border-left-color: var(--green);
  background: linear-gradient(90deg, rgba(58, 208, 120, 0.09), transparent);
}

.content blockquote.warn {
  border-left-color: var(--red);
  background: linear-gradient(90deg, rgba(239, 106, 96, 0.09), transparent);
}

.content code {
  font-family: Consolas, "Courier New", monospace;
  background: var(--bg-code);
  color: var(--green);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.92em;
}

.content pre {
  margin: 18px 0;
  padding: 18px;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow-x: auto;
  box-shadow: inset 0 0 24px rgba(0, 0, 0, 0.25);
}

.content pre code {
  background: none;
  color: var(--fg);
  padding: 0;
  font-size: 13.5px;
  line-height: 1.6;
}

/* ---------- 表格 ---------- */
.content table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 18px 0;
  font-size: 13.5px;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.content th, .content td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.content tr:last-child td { border-bottom: none; }

.content th {
  background: linear-gradient(180deg, #1a2033, #151b2b);
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.3px;
}

.content td:first-child { color: var(--fg); font-weight: 600; white-space: nowrap; }

.content tbody tr { transition: background 0.12s; }
.content tbody tr:nth-child(even) { background: rgba(255, 255, 255, 0.015); }
.content tbody tr:hover { background: rgba(91, 140, 255, 0.07); }

/* ---------- 首页 hero ---------- */
.hero { padding: 52px 0 16px; }

.hero .kicker {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent-3);
  margin-bottom: 10px;
}

.hero h1 { font-size: 44px; margin-bottom: 6px; }

.hero .tagline { color: var(--fg-dim); font-size: 17.5px; margin: 12px 0 8px; max-width: 620px; }

.hero .badges { display: flex; gap: 8px; flex-wrap: wrap; margin: 18px 0 0; }

.hero .badge {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  color: var(--fg-dim);
  font-size: 12px;
  padding: 4px 13px;
  border-radius: 20px;
  transition: border-color 0.15s, color 0.15s, transform 0.15s;
}

.hero .badge:hover { border-color: var(--accent); color: var(--fg); transform: translateY(-2px); }

.hero .actions { display: flex; gap: 12px; margin: 30px 0 10px; }

.hero .stats { display: flex; gap: 34px; margin-top: 36px; flex-wrap: wrap; }

.hero .stat b {
  display: block;
  font-size: 26px;
  font-weight: 800;
  background: linear-gradient(120deg, var(--fg), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.hero .stat span { font-size: 13px; color: var(--fg-dim); }

/* ---------- 按钮 ---------- */
.btn {
  position: relative;
  display: inline-block;
  padding: 11px 24px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  border: none;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s, color 0.15s;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  background-size: 160% auto;
  color: #fff;
  box-shadow: 0 6px 20px rgba(91, 140, 255, 0.35);
}

.btn.primary:hover {
  background-position: right center;
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(91, 140, 255, 0.5);
  text-decoration: none;
}

.btn.primary::after {
  content: "";
  position: absolute;
  top: 0;
  left: -130%;
  width: 55%;
  height: 100%;
  transform: skewX(-22deg);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transition: left 0.55s ease;
}

.btn.primary:hover::after { left: 140%; }

.btn.ghost { background: rgba(255, 255, 255, 0.02); color: var(--fg); border: 1px solid var(--border); }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); text-decoration: none; }

/* ---------- 卡片（玻璃拟态） ---------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; margin: 26px 0; }

.card {
  position: relative;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.015));
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 14px;
  padding: 20px 20px 18px;
  overflow: hidden;
  backdrop-filter: blur(10px);
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: 0.75;
}

.card::after {
  content: "";
  position: absolute;
  top: -60%;
  right: -30%;
  width: 70%;
  height: 120%;
  background: radial-gradient(closest-side, rgba(91, 140, 255, 0.12), transparent);
  opacity: 0;
  transition: opacity 0.25s;
  pointer-events: none;
}

.card:hover {
  transform: translateY(-5px);
  border-color: rgba(91, 140, 255, 0.55);
  box-shadow: var(--glow), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.card:hover::after { opacity: 1; }

.card h3 { margin: 6px 0 8px; color: var(--fg); font-size: 16px; position: relative; }
.card p { color: var(--fg-dim); font-size: 13.5px; margin: 0; position: relative; }
.card .num {
  display: inline-block;
  color: var(--accent);
  font-weight: 700;
  font-size: 11.5px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

/* 卡片按游戏配色 */
.card.fam-souls::before { background: linear-gradient(90deg, var(--souls), var(--red)); }
.card.fam-souls .num { color: var(--souls); }
.card.fam-souls:hover { border-color: rgba(255, 122, 89, 0.55); }
.card.fam-souls::after { background: radial-gradient(closest-side, rgba(255, 122, 89, 0.13), transparent); }

.card.fam-miyo::before { background: linear-gradient(90deg, var(--miyo), var(--accent)); }
.card.fam-miyo .num { color: var(--miyo); }
.card.fam-miyo:hover { border-color: rgba(79, 195, 247, 0.55); }
.card.fam-miyo::after { background: radial-gradient(closest-side, rgba(79, 195, 247, 0.13), transparent); }

.card.fam-ue::before { background: linear-gradient(90deg, var(--ue), var(--accent-2)); }
.card.fam-ue .num { color: var(--ue); }
.card.fam-ue:hover { border-color: rgba(167, 139, 250, 0.55); }
.card.fam-ue::after { background: radial-gradient(closest-side, rgba(167, 139, 250, 0.14), transparent); }

.card.fam-re::before { background: linear-gradient(90deg, var(--re), var(--yellow)); }
.card.fam-re .num { color: var(--re); }
.card.fam-re:hover { border-color: rgba(255, 183, 77, 0.55); }
.card.fam-re::after { background: radial-gradient(closest-side, rgba(255, 183, 77, 0.13), transparent); }

.card.fam-mt::before { background: linear-gradient(90deg, var(--mt), var(--green)); }
.card.fam-mt .num { color: var(--mt); }
.card.fam-mt:hover { border-color: rgba(102, 187, 106, 0.55); }
.card.fam-mt::after { background: radial-gradient(closest-side, rgba(102, 187, 106, 0.13), transparent); }

/* ---------- 章节导航 ---------- */
.chapter-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  gap: 12px;
}

.chapter-nav .nav-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 18px;
  max-width: 46%;
  transition: border-color 0.15s, transform 0.15s;
}

.chapter-nav .nav-item:hover { border-color: var(--accent); transform: translateY(-2px); }
.chapter-nav .nav-item.next { margin-left: auto; text-align: right; }
.chapter-nav .nav-label { font-size: 12px; color: var(--fg-dim); }
.chapter-nav .nav-title { font-weight: 600; color: var(--fg); }
.chapter-nav a:hover .nav-title { color: var(--accent); text-decoration: none; }

/* ---------- 目录 (TOC) ---------- */
.toc {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 22px;
  margin: 22px 0;
  font-size: 14px;
  backdrop-filter: blur(8px);
}

.toc b { color: var(--accent); }
.toc ol { margin: 10px 0 0 20px; color: var(--fg-dim); }
.toc a:hover { color: var(--fg); }

/* ---------- 页脚 ---------- */
.footer {
  text-align: center;
  color: var(--fg-dim);
  font-size: 13px;
  padding: 28px 24px;
  position: relative;
}

.footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(520px, 70%);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), var(--accent-2), transparent);
  opacity: 0.55;
}

/* ---------- 进度条 ---------- */
.read-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  z-index: 200;
  transition: width 0.1s linear;
}

/* ---------- 返回顶部 ---------- */
#backTop {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  border: none;
  font-size: 18px;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.15s;
  box-shadow: 0 6px 18px rgba(91, 140, 255, 0.4);
  z-index: 150;
}

#backTop.show { opacity: 1; pointer-events: auto; }
#backTop:hover { transform: translateY(-2px); }

/* ---------- 模板占位 ---------- */
.placeholder {
  border: 1.5px dashed var(--border);
  border-radius: 12px;
  padding: 20px 22px;
  margin: 20px 0;
  color: var(--fg-dim);
  font-size: 14px;
  background: rgba(255, 255, 255, 0.012);
}

.placeholder b { color: var(--accent); }
.placeholder p { margin: 4px 0; }

/* ---------- 路线图时间线 ---------- */
.timeline {
  position: relative;
  margin: 26px 0;
  padding-left: 30px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
}

.tl-item { position: relative; margin-bottom: 22px; }

.tl-item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  animation: nodePulse 3s ease-in-out infinite;
}

.tl-item.done::before { background: var(--green); animation-name: nodePulseGreen; }

@keyframes nodePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(91, 140, 255, 0.5), 0 0 10px rgba(91, 140, 255, 0.6); }
  50% { box-shadow: 0 0 0 6px rgba(91, 140, 255, 0), 0 0 10px rgba(91, 140, 255, 0.6); }
}

@keyframes nodePulseGreen {
  0%, 100% { box-shadow: 0 0 0 0 rgba(58, 208, 120, 0.5), 0 0 10px rgba(58, 208, 120, 0.6); }
  50% { box-shadow: 0 0 0 6px rgba(58, 208, 120, 0), 0 0 10px rgba(58, 208, 120, 0.6); }
}

.tl-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

.tl-item h3 { margin: 0; font-size: 16px; color: var(--fg); }

.pill {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 1px 10px;
  border-radius: 20px;
  letter-spacing: 0.5px;
}

.pill.done { color: var(--green); background: rgba(58, 208, 120, 0.12); border: 1px solid rgba(58, 208, 120, 0.35); }
.pill.doing { color: var(--accent); background: rgba(91, 140, 255, 0.12); border: 1px solid rgba(91, 140, 255, 0.35); }
.pill.plan { color: var(--fg-dim); background: rgba(154, 165, 184, 0.1); border: 1px solid var(--border); }

.tl-item p { margin: 4px 0 0; color: var(--fg-dim); font-size: 14px; }

/* ---------- 滚动渐显 ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.55s ease, transform 0.55s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 动效 ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .content table { display: block; overflow-x: auto; white-space: nowrap; }
  .sidebar {
    position: fixed;
    left: 0;
    top: 58px;
    bottom: 0;
    width: 260px;
    transform: translateX(-100%);
    transition: transform 0.2s;
    z-index: 90;
  }
  .sidebar.open { transform: translateX(0); }
  .menu-btn { display: block; }
  .content { padding: 24px 20px 60px; }
  .topbar .nav-links { display: none; }
  .hero h1 { font-size: 34px; }
  .hero .stats { gap: 22px; }
}