/* =========================================================
   拾光书城 · 站点主样式 —— 赛博朋克 · 烈焰霓虹主题
   - 暗黑暖黑底 + 琥珀橙/火焰红霓虹 HUD
   - CRT 扫描线、面板 HUD 角标、标题故障撕裂
   - 背景火焰余烬粒子（canvas，低亮度不干扰阅读）
   - 系统字体 + 等宽 HUD 字体，零外部资源
   ========================================================= */

:root {
  --bg: #080503;
  --bg-2: #110a05;
  --card: #0f0906;
  --fg: #ffe9d2;
  --muted: #a08a75;
  --border: #2c1d10;
  --accent: #f59f00;      /* 琥珀 */
  --accent-2: #ff7a1a;    /* 火焰橙 */
  --accent-3: #ff5c5c;    /* 焰红 */
  --danger: #ff5c5c;
  --ok: #2fbf71;
  --glow: rgba(255, 122, 26, .35);
  --glow-soft: rgba(245, 159, 0, .18);
  --radius: 10px;
  --shadow: 0 0 18px rgba(0, 0, 0, .45), inset 0 0 32px rgba(232, 89, 12, .05);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: Consolas, "Cascadia Mono", "Courier New", monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  color: var(--fg);
  /* 底部静态火光渐变兜底：即使系统关闭动画（减少动效），页面仍有火焰氛围 */
  background:
    radial-gradient(130% 90% at 50% 0%, var(--bg-2) 0%, var(--bg) 58%),
    radial-gradient(120% 45% at 50% 106%, rgba(255, 122, 26, .08), transparent 60%);
  background-attachment: fixed;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
h1, h2, h3 { line-height: 1.3; margin: 0; }
button { font-family: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
::selection { background: rgba(245, 159, 0, .35); }
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #33200f; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: #4a2d15; }

/* 背景火焰余烬画布 + 内容层级 */
.ambient-canvas { position: fixed; inset: 0; z-index: 0; pointer-events: none; }
.page-wrap { position: relative; z-index: 1; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.main { padding: 20px 0 40px; }
.dim { color: var(--muted); font-weight: 400; font-size: .9em; }

/* ---------------- 顶部导航 HUD ---------------- */

.site-head {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 7, 5, .88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(245, 159, 0, .12), 0 6px 24px rgba(0, 0, 0, .4);
}
.head-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  height: 58px;
}
.logo {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .06em;
  white-space: nowrap;
  color: var(--fg);
  text-shadow: 0 0 14px var(--glow-soft);
}
.logo span { color: var(--accent); }
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav > a, .nav-cat-btn {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 14px;
  font-family: var(--font-mono);
  letter-spacing: .04em;
  color: var(--fg);
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
}
.main-nav > a:hover, .nav-cat-btn:hover {
  color: var(--accent);
  border-color: var(--border);
  text-shadow: 0 0 10px var(--glow-soft);
}
.main-nav > a.on { color: var(--accent); font-weight: 600; }
.nav-cat { position: relative; }
.nav-cat-menu {
  position: absolute;
  top: 110%;
  left: 0;
  display: none;
  flex-direction: column;
  min-width: 128px;
  padding: 6px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, .6), 0 0 18px rgba(245, 159, 0, .08);
}
.nav-cat:hover .nav-cat-menu, .nav-cat:focus-within .nav-cat-menu { display: flex; }
.nav-cat-menu a { padding: 7px 12px; border-radius: 6px; font-size: 14px; }
.nav-cat-menu a:hover { background: rgba(245, 159, 0, .12); color: var(--accent); }

.head-search {
  flex: 1;
  display: flex;
  max-width: 320px;
  margin-left: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(20, 13, 8, .8);
  overflow: hidden;
  transition: border-color .18s ease, box-shadow .18s ease;
}
.head-search:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--glow-soft);
}
.head-search input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  padding: 7px 6px 7px 16px;
  font-size: 14px;
  color: var(--fg);
  outline: none;
}
.head-search button {
  border: 0;
  background: transparent;
  padding: 0 14px;
  cursor: pointer;
  font-size: 15px;
  color: var(--muted);
}
.head-user { display: flex; align-items: center; gap: 12px; font-size: 14px; white-space: nowrap; font-family: var(--font-mono); }
.user-chip { display: inline-flex; align-items: center; gap: 8px; }
.user-chip .hello { max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-chip:hover .hello { color: var(--accent); text-shadow: 0 0 10px var(--glow-soft); }
.avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .2);
  box-shadow: 0 0 10px var(--glow-soft);
  flex-shrink: 0;
  user-select: none;
}
.avatar svg { display: block; width: 100%; height: 100%; }
.head-user a:hover { color: var(--accent); text-shadow: 0 0 10px var(--glow-soft); }
.head-user .signup {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #1c0f02;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 6px;
  box-shadow: 0 0 14px var(--glow);
}
.link-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  font-family: var(--font-mono);
  cursor: pointer;
  padding: 0;
}
.link-btn:hover { color: var(--danger); }

.cat-chips {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 8px 16px 10px;
  scrollbar-width: none;
}
.cat-chips::-webkit-scrollbar { display: none; }
.cat-chips a {
  flex-shrink: 0;
  padding: 4px 14px;
  border-radius: 6px;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--muted);
  background: rgba(20, 13, 8, .6);
  border: 1px solid var(--border);
}
.cat-chips a.on {
  color: #1c0f02;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  box-shadow: 0 0 14px var(--glow);
}
.cat-chips a:hover:not(.on) { color: var(--accent); border-color: var(--accent); }

/* ---------------- 首页 Hero ---------------- */

.hero {
  text-align: center;
  padding: 44px 16px 36px;
}
.hero h1 { font-size: clamp(24px, 4.6vw, 36px); font-weight: 800; letter-spacing: .04em; }
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, var(--accent), var(--accent-2), var(--accent-3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 14px var(--glow-soft));
}
.hero-sub { color: var(--muted); margin: 10px 0 22px; font-family: var(--font-mono); letter-spacing: .12em; }
.hero-search {
  display: flex;
  gap: 10px;
  max-width: 460px;
  margin: 0 auto;
}
.hero-search input {
  flex: 1;
  min-width: 0;
  padding: 11px 18px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: rgba(20, 13, 8, .8);
  color: var(--fg);
  font-size: 15px;
  box-shadow: var(--shadow);
  transition: border-color .18s ease, box-shadow .18s ease;
}
.hero-search input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 16px var(--glow-soft); }

/* 标题故障撕裂（HTML 带 data-text 时生效） */
.glitch { position: relative; }
.glitch::before, .glitch::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  text-align: inherit;
}
.glitch::before { color: var(--accent); animation: glitchA 4.2s steps(1) infinite; }
.glitch::after { color: var(--accent-3); animation: glitchB 4.2s steps(1) infinite; animation-delay: 1.4s; }
@keyframes glitchA {
  0%, 91% { opacity: 0; transform: none; clip-path: inset(0 0 0 0); }
  92% { opacity: 1; transform: translate(-3px, 1px); clip-path: inset(12% 0 58% 0); }
  94% { opacity: 1; transform: translate(3px, -1px); clip-path: inset(55% 0 12% 0); }
  96% { opacity: 1; transform: translate(-2px, 0); clip-path: inset(30% 0 42% 0); }
  98% { opacity: 1; transform: translate(2px, 1px); clip-path: inset(70% 0 4% 0); }
  99%, 100% { opacity: 0; }
}
@keyframes glitchB {
  0%, 91% { opacity: 0; transform: none; clip-path: inset(0 0 0 0); }
  92% { opacity: 1; transform: translate(3px, -1px); clip-path: inset(60% 0 10% 0); }
  94% { opacity: 1; transform: translate(-3px, 1px); clip-path: inset(8% 0 62% 0); }
  96% { opacity: 1; transform: translate(2px, 0); clip-path: inset(40% 0 30% 0); }
  98% { opacity: 1; transform: translate(-2px, -1px); clip-path: inset(75% 0 2% 0); }
  99%, 100% { opacity: 0; }
}

/* ---------------- 面板（HUD 角标 + 内辉光） ---------------- */

.panel {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.panel::before, .panel::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  pointer-events: none;
  opacity: .55;
}
.panel::before { top: -1px; left: -1px; border-top: 2px solid var(--accent); border-left: 2px solid var(--accent); border-top-left-radius: 9px; }
.panel::after { bottom: -1px; right: -1px; border-bottom: 2px solid var(--accent-2); border-right: 2px solid var(--accent-2); border-bottom-right-radius: 9px; }

.panel-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 14px;
}
.panel-head h2 { font-size: 18px; padding-left: 12px; position: relative; }
.panel-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 1em;
  border-radius: 2px;
  background: linear-gradient(var(--accent), var(--accent-2));
  box-shadow: 0 0 8px var(--glow-soft);
}
.dim-link { margin-left: auto; font-size: 13px; color: var(--muted); font-family: var(--font-mono); }
.dim-link:hover { color: var(--accent); text-shadow: 0 0 10px var(--glow-soft); }

.home-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 860px) { .home-grid { grid-template-columns: 1fr; } }

/* 图书网格 */
.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(128px, 1fr));
  gap: 18px 14px;
}
.book-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform .16s ease;
  contain: content;
}
.book-card:hover { transform: translateY(-3px); }
.book-card:hover .cover { box-shadow: 0 0 22px var(--glow-soft); border-color: var(--accent); }
.book-card .cover { width: 100%; }
.book-title {
  font-weight: 600;
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.book-sub { font-size: 12px; color: var(--muted); font-family: var(--font-mono); }
.book-intro {
  font-size: 12px;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 封面（赛博霓虹渐变，纯 CSS 零图片） */
.cover {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  aspect-ratio: 3 / 4;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid rgba(245, 159, 0, .25);
  transition: box-shadow .2s ease, border-color .2s ease;
}
.cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 90% at 30% 0%, rgba(255, 255, 255, .18), transparent 55%);
}
.cover-char {
  font-size: 32px;
  font-weight: 800;
  color: rgba(255, 240, 220, .95);
  text-shadow: 0 0 18px rgba(0, 0, 0, .5);
}
.cover-tag {
  position: absolute;
  left: 8px;
  bottom: 8px;
  z-index: 1;
  font-size: 11px;
  font-family: var(--font-mono);
  color: #ffd9a8;
  background: rgba(10, 5, 2, .55);
  border: 1px solid rgba(245, 159, 0, .35);
  padding: 2px 8px;
  border-radius: 4px;
  backdrop-filter: blur(3px);
}
.cover-night   { background: linear-gradient(150deg, #0f1b3d, #3d0f5e 55%, #6e0f45); }
.cover-ocean   { background: linear-gradient(150deg, #063a4a, #0aa3a3); }
.cover-forest  { background: linear-gradient(150deg, #0b3d1f, #2fd66b); }
.cover-sunset  { background: linear-gradient(150deg, #7a1f00, #ff7a1a 55%, #ffc53d); }
.cover-volcano { background: linear-gradient(150deg, #3d0505, #c92a2a 60%, #ff7a1a); }
.cover-snow    { background: linear-gradient(150deg, #3a4f70, #9fd8ec); }

/* 真实封面图（公版书海报封面） */
.cover-img { background: var(--bg-2); }
.cover-img img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 10px;
}
.cover-img .cover-tag { z-index: 2; }

/* 热门榜 */
.rank-list { list-style: none; margin: 0; padding: 0; }
.rank-list li a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 8px;
  border-radius: 8px;
}
.rank-list li a:hover { background: rgba(245, 159, 0, .1); }
.rk {
  flex-shrink: 0;
  width: 24px;
  text-align: center;
  font-weight: 700;
  color: var(--muted);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}
.rk-top { color: #1c0f02; border-radius: 6px; font-size: 13px; line-height: 24px; }
.rk-1 { background: linear-gradient(135deg, #ff5c5c, #ff7a1a); }
.rk-2 { background: linear-gradient(135deg, #ff7a1a, #f59f00); }
.rk-3 { background: linear-gradient(135deg, #f59f00, #ffc53d); }
.rk-body { display: flex; flex-direction: column; min-width: 0; }
.rk-title { font-weight: 600; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rk-sub { font-size: 12px; color: var(--muted); font-family: var(--font-mono); }

/* 最近更新 */
.update-list { list-style: none; margin: 0; padding: 0; }
.update-list li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 8px;
  border-radius: 8px;
}
.update-list li a:hover { background: rgba(245, 159, 0, .1); }
.up-body { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.up-title { font-weight: 600; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.up-sub { font-size: 12px; color: var(--muted); font-family: var(--font-mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.up-go { flex-shrink: 0; font-size: 13px; color: var(--accent); opacity: 0; transition: opacity .15s ease; }
.update-list li a:hover .up-go { opacity: 1; text-shadow: 0 0 10px var(--glow-soft); }

/* ---------------- 按钮（霓虹描边） ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--fg);
  font-size: 14px;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease, box-shadow .15s ease, transform .12s ease;
}
.btn:hover { color: var(--accent); border-color: var(--accent); box-shadow: 0 0 14px var(--glow-soft); }
.btn:active { transform: scale(.97); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: #1c0f02;
  font-weight: 700;
  box-shadow: 0 0 16px var(--glow);
}
.btn-primary:hover { color: #1c0f02; box-shadow: 0 0 24px var(--glow); filter: brightness(1.07); }
.btn-lg { padding: 10px 26px; font-size: 15px; }
.btn-sm { padding: 5px 14px; font-size: 13px; }
.btn-block { width: 100%; }
.btn.is-fav { border-color: var(--accent); color: var(--accent); background: rgba(245, 159, 0, .1); }

/* ---------------- 书籍详情 ---------------- */

.book-head { display: flex; gap: 22px; }
.book-cover-lg { width: 168px; flex-shrink: 0; }
.book-cover-lg .cover-char { font-size: 44px; }
.book-info { flex: 1; min-width: 0; }
.crumbs { font-size: 13px; color: var(--muted); margin-bottom: 8px; font-family: var(--font-mono); }
.crumbs a:hover { color: var(--accent); }
.book-info h1 { font-size: 26px; margin-bottom: 8px; letter-spacing: .04em; }
.book-meta-line { display: flex; flex-wrap: wrap; gap: 6px 8px; font-size: 13px; color: var(--muted); margin-bottom: 14px; font-family: var(--font-mono); }
.book-meta-line .status { color: var(--accent); }
.book-meta-line .status.done { color: var(--ok); }
.book-intro-lg {
  color: var(--muted);
  margin: 0 0 20px;
  max-width: 640px;
}
.book-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.chapter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 4px;
}
.chapter-grid a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 14px;
  overflow: hidden;
  border: 1px solid transparent;
}
.chapter-grid a:hover { background: rgba(245, 159, 0, .1); color: var(--accent); border-color: var(--border); }
.ch-idx { flex-shrink: 0; width: 22px; text-align: right; color: var(--muted); font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.chapter-grid a span:nth-child(2) { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }
.ch-words { flex-shrink: 0; font-size: 12px; color: var(--muted); font-family: var(--font-mono); }

@media (max-width: 640px) {
  .book-head { flex-direction: column; align-items: center; text-align: center; }
  .book-cover-lg { width: 132px; }
  .book-actions { justify-content: center; }
  .chapter-grid { grid-template-columns: 1fr 1fr; }
}

/* ---------------- 分页 ---------------- */

.pager { display: flex; align-items: center; justify-content: center; gap: 14px; padding: 8px 0 4px; }
.pager-btn {
  padding: 6px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: var(--font-mono);
  background: transparent;
  color: var(--fg);
}
.pager-btn:hover { border-color: var(--accent); color: var(--accent); box-shadow: 0 0 12px var(--glow-soft); }
.pager-btn.off { opacity: .4; pointer-events: none; }
.pager-info { color: var(--muted); font-size: 13px; font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* ---------------- 书架 ---------------- */

.tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.tab {
  padding: 7px 18px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  font-family: var(--font-mono);
  cursor: pointer;
}
.tab.on {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: #1c0f02;
  font-weight: 700;
  box-shadow: 0 0 14px var(--glow);
}
.shelf-list { display: flex; flex-direction: column; gap: 12px; }
.shelf-item {
  display: flex;
  gap: 14px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(11, 7, 5, .55);
}
.shelf-cover { width: 66px; flex-shrink: 0; }
.shelf-meta { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 4px; }
.shelf-actions { display: flex; gap: 10px; margin-top: 4px; }

/* ---------------- 登录 / 注册 ---------------- */

.auth-wrap { display: flex; justify-content: center; padding: 30px 0; }
.auth-card {
  width: 100%;
  max-width: 380px;
  padding: 30px 28px;
}
.auth-card h1 { font-size: 24px; margin-bottom: 4px; }
.auth-card .dim { margin-bottom: 22px; }
.form-label { display: block; font-size: 13px; color: var(--muted); margin: 14px 0 6px; font-family: var(--font-mono); }
.form-control {
  width: 100%;
  padding: 10px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: rgba(11, 7, 5, .6);
  color: var(--fg);
  font-size: 15px;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.form-control:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 14px var(--glow-soft); }
.auth-err {
  margin-top: 12px;
  padding: 9px 12px;
  border-radius: 6px;
  border: 1px solid rgba(255, 92, 92, .4);
  background: rgba(255, 92, 92, .1);
  color: var(--danger);
  font-size: 13px;
}
.auth-card .btn-block { margin-top: 20px; }
.auth-switch { text-align: center; font-size: 13px; color: var(--muted); margin: 16px 0 0; }
.auth-switch a { color: var(--accent); }

/* ---------------- 空状态 / 404 ---------------- */

.empty { text-align: center; color: var(--muted); padding: 30px 0; }
.empty-page { text-align: center; padding: 70px 0; }
.empty-page h1 {
  font-size: 56px;
  color: var(--accent);
  text-shadow: 0 0 30px var(--glow);
}
.empty-page p { color: var(--muted); margin: 10px 0 22px; }

/* ---------------- 页脚 ---------------- */

.site-foot {
  border-top: 1px solid var(--border);
  padding: 26px 0 34px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  font-family: var(--font-mono);
}
.site-foot p { margin: 4px 0; }

/* ---------------- 移动端适配 ---------------- */

@media (max-width: 720px) {
  .head-inner { flex-wrap: wrap; height: auto; padding: 10px 16px; gap: 10px; }
  .main-nav { order: 3; width: 100%; overflow-x: auto; }
  .head-search { order: 2; flex: 1; max-width: none; }
  .head-user { margin-left: 0; }
  .hero { padding: 28px 8px 24px; }
  .panel { padding: 14px; }
}

/* ---------------- 动效偏好 ---------------- */

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