/* ================================================================
   全国电话区号查询网 · 全局共享样式 V2.0
   QuHao Dictionary — Shared CSS
   新增: AI引言(吃喝玩乐)、数据来源标注
   ================================================================ */

/* ========== 00: Theme Definitions (7 themes) ========== */
:root,[data-theme="blue"]{
  --bg-primary:#eef3fa;--bg-secondary:#e3eaf4;--bg-card:rgba(255,255,255,0.82);--bg-card-solid:#ffffff;
  --bg-card-hover:rgba(255,255,255,0.95);--bg-sidebar:#e8eff8;--bg-input:#ffffff;--bg-glass:rgba(255,255,255,0.52);
  --gold:#3a7bd5;--gold-light:#5a9be6;--gold-dark:#2860a8;--gold-glow:rgba(58,123,213,0.12);
  --gold-gradient:linear-gradient(135deg,#2860a8 0%,#3a7bd5 50%,#5a9be6 100%);
  --text-primary:#1a2a40;--text-secondary:#3d5570;--text-muted:#6d85a0;
  --border:rgba(58,123,213,0.13);--border-gold:rgba(58,123,213,0.2);
  --accent-red:#d94848;--accent-green:#3a9d6a;--accent-blue:#3a7bd5;--accent-purple:#8b6bbf;
  --theme-accent:#3a7bd5;--theme-glow:rgba(58,123,213,0.06);
  --hero-gradient:radial-gradient(ellipse at 30% 20%,rgba(58,123,213,0.08) 0%,transparent 50%),radial-gradient(ellipse at 80% 80%,rgba(90,155,230,0.05) 0%,transparent 50%);
  --shadow-sm:0 1px 3px rgba(0,0,0,0.06);--shadow-md:0 4px 12px rgba(0,0,0,0.08);--shadow-gold:0 6px 24px rgba(58,123,213,0.15);
  --intro-card-bg:linear-gradient(135deg,rgba(58,123,213,0.04) 0%,rgba(255,255,255,0.6) 100%);
  --logo-glow:rgba(58,123,213,0.25);--logo-glow-strong:rgba(58,123,213,0.55);
}
[data-theme="emerald"]{
  --bg-primary:#f0faf4;--bg-secondary:#e6f5ed;--bg-card:rgba(255,255,255,0.82);--bg-card-solid:#ffffff;
  --bg-card-hover:rgba(255,255,255,0.95);--bg-sidebar:#eaf6ee;--bg-input:#ffffff;--bg-glass:rgba(255,255,255,0.52);
  --gold:#2d9d6a;--gold-light:#3dbd80;--gold-dark:#1f7a50;--gold-glow:rgba(45,157,106,0.12);
  --gold-gradient:linear-gradient(135deg,#1f7a50 0%,#2d9d6a 50%,#3dbd80 100%);
  --text-primary:#1a3a2a;--text-secondary:#3d6b52;--text-muted:#6d9a80;
  --border:rgba(45,157,106,0.13);--border-gold:rgba(45,157,106,0.2);
  --accent-red:#d94848;--accent-green:#2d9d6a;--accent-blue:#3898d0;--accent-purple:#9b6fbf;
  --theme-accent:#2d9d6a;--theme-glow:rgba(45,157,106,0.06);
  --hero-gradient:radial-gradient(ellipse at 30% 20%,rgba(45,157,106,0.08) 0%,transparent 50%),radial-gradient(ellipse at 80% 80%,rgba(61,189,128,0.05) 0%,transparent 50%);
  --shadow-sm:0 1px 3px rgba(0,0,0,0.06);--shadow-md:0 4px 12px rgba(0,0,0,0.08);--shadow-gold:0 6px 24px rgba(45,157,106,0.15);
  --intro-card-bg:linear-gradient(135deg,rgba(45,157,106,0.04) 0%,rgba(255,255,255,0.6) 100%);
  --logo-glow:rgba(45,157,106,0.25);--logo-glow-strong:rgba(45,157,106,0.55);
}
[data-theme="purple"]{
  --bg-primary:#f8f4fc;--bg-secondary:#f0eaf6;--bg-card:rgba(255,255,255,0.82);--bg-card-solid:#ffffff;
  --bg-card-hover:rgba(255,255,255,0.95);--bg-sidebar:#f2ecf8;--bg-input:#ffffff;--bg-glass:rgba(255,255,255,0.52);
  --gold:#8b6bbf;--gold-light:#a88cd4;--gold-dark:#6d4f9e;--gold-glow:rgba(139,107,191,0.12);
  --gold-gradient:linear-gradient(135deg,#6d4f9e 0%,#8b6bbf 50%,#a88cd4 100%);
  --text-primary:#2a2040;--text-secondary:#54406a;--text-muted:#8870a0;
  --border:rgba(139,107,191,0.13);--border-gold:rgba(139,107,191,0.2);
  --accent-red:#d94848;--accent-green:#4dab80;--accent-blue:#5b8cd4;--accent-purple:#8b6bbf;
  --theme-accent:#8b6bbf;--theme-glow:rgba(139,107,191,0.06);
  --hero-gradient:radial-gradient(ellipse at 30% 20%,rgba(139,107,191,0.08) 0%,transparent 50%),radial-gradient(ellipse at 80% 80%,rgba(168,140,212,0.05) 0%,transparent 50%);
  --shadow-sm:0 1px 3px rgba(0,0,0,0.06);--shadow-md:0 4px 12px rgba(0,0,0,0.08);--shadow-gold:0 6px 24px rgba(139,107,191,0.15);
  --intro-card-bg:linear-gradient(135deg,rgba(139,107,191,0.04) 0%,rgba(255,255,255,0.6) 100%);
  --logo-glow:rgba(139,107,191,0.25);--logo-glow-strong:rgba(139,107,191,0.55);
}
[data-theme="crimson"]{
  --bg-primary:#fdf6f2;--bg-secondary:#f9ede6;--bg-card:rgba(255,255,255,0.82);--bg-card-solid:#ffffff;
  --bg-card-hover:rgba(255,255,255,0.95);--bg-sidebar:#faeee8;--bg-input:#ffffff;--bg-glass:rgba(255,255,255,0.52);
  --gold:#d06848;--gold-light:#e8896a;--gold-dark:#b05038;--gold-glow:rgba(208,104,72,0.12);
  --gold-gradient:linear-gradient(135deg,#b05038 0%,#d06848 50%,#e8896a 100%);
  --text-primary:#3a2420;--text-secondary:#6d4a40;--text-muted:#a07a70;
  --border:rgba(208,104,72,0.13);--border-gold:rgba(208,104,72,0.2);
  --accent-red:#d06848;--accent-green:#4dab80;--accent-blue:#5b8cd4;--accent-purple:#8b6bbf;
  --theme-accent:#d06848;--theme-glow:rgba(208,104,72,0.06);
  --hero-gradient:radial-gradient(ellipse at 30% 20%,rgba(208,104,72,0.08) 0%,transparent 50%),radial-gradient(ellipse at 80% 80%,rgba(232,137,106,0.05) 0%,transparent 50%);
  --shadow-sm:0 1px 3px rgba(0,0,0,0.06);--shadow-md:0 4px 12px rgba(0,0,0,0.08);--shadow-gold:0 6px 24px rgba(208,104,72,0.15);
  --intro-card-bg:linear-gradient(135deg,rgba(208,104,72,0.04) 0%,rgba(255,255,255,0.6) 100%);
  --logo-glow:rgba(208,104,72,0.25);--logo-glow-strong:rgba(208,104,72,0.55);
}
[data-theme="light"]{
  --bg-primary:#f5f2eb;--bg-secondary:#ede9e0;--bg-card:rgba(255,255,255,0.82);--bg-card-solid:#ffffff;
  --bg-card-hover:rgba(255,255,255,0.95);--bg-sidebar:#eae5da;--bg-input:#ffffff;--bg-glass:rgba(255,255,255,0.5);
  --gold:#b8941e;--gold-light:#d4af37;--gold-dark:#8a6f10;--gold-glow:rgba(184,148,30,0.12);
  --gold-gradient:linear-gradient(135deg,#8a6f10 0%,#d4af37 50%,#b8941e 100%);
  --text-primary:#2c2418;--text-secondary:#5a4e3e;--text-muted:#8a7e6e;
  --border:rgba(180,165,140,0.25);--border-gold:rgba(184,148,30,0.25);
  --accent-red:#dc2626;--accent-green:#16a34a;--accent-blue:#2563eb;--accent-purple:#7c3aed;
  --theme-accent:#8a6f10;--theme-glow:rgba(184,148,30,0.05);
  --hero-gradient:radial-gradient(ellipse at 30% 20%,rgba(184,148,30,0.06) 0%,transparent 50%),radial-gradient(ellipse at 80% 80%,rgba(140,110,20,0.04) 0%,transparent 50%);
  --shadow-sm:0 1px 3px rgba(0,0,0,0.06);--shadow-md:0 4px 12px rgba(0,0,0,0.08);--shadow-gold:0 6px 24px rgba(184,148,30,0.15);
  --intro-card-bg:linear-gradient(135deg,rgba(184,148,30,0.04) 0%,rgba(255,255,255,0.6) 100%);
  --logo-glow:rgba(184,148,30,0.25);--logo-glow-strong:rgba(184,148,30,0.55);
}
[data-theme="sakura"]{
  --bg-primary:#fdf2f8;--bg-secondary:#fce7f3;--bg-card:rgba(255,255,255,0.82);--bg-card-solid:#ffffff;
  --bg-card-hover:rgba(255,255,255,0.95);--bg-sidebar:#fbeaf2;--bg-input:#ffffff;--bg-glass:rgba(255,255,255,0.55);
  --gold:#d4548c;--gold-light:#f07aa8;--gold-dark:#b83e72;--gold-glow:rgba(212,84,140,0.12);
  --gold-gradient:linear-gradient(135deg,#b83e72 0%,#d4548c 50%,#f07aa8 100%);
  --text-primary:#3a1830;--text-secondary:#6d3d5a;--text-muted:#a0708a;
  --border:rgba(212,84,140,0.13);--border-gold:rgba(212,84,140,0.22);
  --accent-red:#e05580;--accent-green:#3a9d6a;--accent-blue:#5b8cd4;--accent-purple:#a86bbf;
  --theme-accent:#d4548c;--theme-glow:rgba(212,84,140,0.06);
  --hero-gradient:radial-gradient(ellipse at 30% 20%,rgba(212,84,140,0.08) 0%,transparent 50%),radial-gradient(ellipse at 80% 80%,rgba(240,122,168,0.06) 0%,transparent 50%);
  --shadow-sm:0 1px 3px rgba(0,0,0,0.06);--shadow-md:0 4px 12px rgba(0,0,0,0.08);--shadow-gold:0 6px 24px rgba(212,84,140,0.15);
  --intro-card-bg:linear-gradient(135deg,rgba(212,84,140,0.04) 0%,rgba(255,255,255,0.6) 100%);
  --logo-glow:rgba(212,84,140,0.25);--logo-glow-strong:rgba(212,84,140,0.55);
}
[data-theme="slate"]{
  --bg-primary:#f4f5f7;--bg-secondary:#eaecf0;--bg-card:rgba(255,255,255,0.82);--bg-card-solid:#ffffff;
  --bg-card-hover:rgba(255,255,255,0.95);--bg-sidebar:#eceef2;--bg-input:#ffffff;--bg-glass:rgba(255,255,255,0.52);
  --gold:#64748b;--gold-light:#94a3b8;--gold-dark:#475569;--gold-glow:rgba(100,116,139,0.12);
  --gold-gradient:linear-gradient(135deg,#475569 0%,#64748b 50%,#94a3b8 100%);
  --text-primary:#1e1e24;--text-secondary:#44474e;--text-muted:#6b6e76;
  --border:rgba(100,116,139,0.13);--border-gold:rgba(100,116,139,0.2);
  --accent-red:#dc2626;--accent-green:#16a34a;--accent-blue:#2563eb;--accent-purple:#7c3aed;
  --theme-accent:#64748b;--theme-glow:rgba(100,116,139,0.06);
  --hero-gradient:radial-gradient(ellipse at 30% 20%,rgba(100,116,139,0.06) 0%,transparent 50%),radial-gradient(ellipse at 80% 80%,rgba(148,163,184,0.04) 0%,transparent 50%);
  --shadow-sm:0 1px 3px rgba(0,0,0,0.06);--shadow-md:0 4px 12px rgba(0,0,0,0.08);--shadow-gold:0 6px 24px rgba(100,116,139,0.15);
  --intro-card-bg:linear-gradient(135deg,rgba(100,116,139,0.04) 0%,rgba(255,255,255,0.6) 100%);
  --logo-glow:rgba(100,116,139,0.25);--logo-glow-strong:rgba(100,116,139,0.55);
}

/* ========== 00.5: Custom Fonts (CDN) ========== */
@font-face{
  font-family:'Alibaba PuHuiTi';
  src:url('https://cdn.jsdelivr.net/gh/liruifengv/alibaba-puhuiti@master/alibabaFont/zh-cn/Alibaba-PuHuiTi-Heavy.otf') format('opentype');
  font-weight:900;font-style:normal;font-display:swap;
}

/* ========== 01: Root & Reset ========== */
:root{
  --radius-sm:10px;--radius-md:16px;--radius-lg:22px;--radius-xl:30px;
  --font-main:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-display:'Noto Serif SC','LXGW WenKai','KaiTi',serif;
  --font-kai:'LXGW WenKai','KaiTi','STKaiti',serif;
  --font-hero:'Alibaba PuHuiTi','Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --sidebar-width:230px;
  --fw-black:900;--fw-bold:700;--fw-semibold:600;--fw-medium:500;--fw-regular:400;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-main);font-weight:400;
  font-size:15px;line-height:1.72;
  background:var(--bg-primary);color:var(--text-primary);
  min-height:100vh;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
a{color:var(--gold);text-decoration:none;transition:color 0.2s}
a:hover{color:var(--gold-dark)}
img{max-width:100%;height:auto}
input,button{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:700}
h2{font-size:20px;margin-bottom:16px;color:var(--text-primary)}

/* ========== 02: Outer Container ========== */
.container{min-height:100vh;display:flex;flex-direction:column}

/* ========== 02.5: Top Header ========== */
.header{
  background:var(--bg-card-solid);border-bottom:1px solid var(--border);
  box-shadow:0 1px 4px rgba(0,0,0,0.04);position:sticky;top:0;z-index:50;
}
.header-content{
  max-width:1200px;margin:0 auto;display:flex;align-items:center;
  justify-content:space-between;padding:12px 24px;
}
.logo{
  display:flex;align-items:center;gap:10px;text-decoration:none;
  transition:opacity 0.2s;
}
.logo:hover{opacity:0.85}
/* === Logo 呼吸光晕动画 === */
@keyframes logoBreath{
  0%,100%{box-shadow:0 0 6px 2px var(--logo-glow),0 4px 18px var(--gold-glow),0 2px 4px rgba(0,0,0,0.06)}
  50%{box-shadow:0 0 16px 8px var(--logo-glow-strong),0 4px 18px var(--gold-glow),0 2px 4px rgba(0,0,0,0.06)}
}
@keyframes logoBreathSidebar{
  0%,100%{box-shadow:0 0 6px 2px var(--logo-glow),0 6px 24px var(--gold-glow),0 2px 6px rgba(0,0,0,0.06)}
  50%{box-shadow:0 0 18px 10px var(--logo-glow-strong),0 6px 24px var(--gold-glow),0 2px 6px rgba(0,0,0,0.06)}
}
@keyframes logoBreathFooter{
  0%,100%{box-shadow:0 0 4px 2px var(--logo-glow),0 3px 12px var(--gold-glow)}
  50%{box-shadow:0 0 14px 6px var(--logo-glow-strong),0 3px 12px var(--gold-glow)}
}

.logo-icon{
  width:44px;height:44px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--gold-gradient);color:#fff;
  font-size:22px;font-weight:900;font-family:var(--font-display);
  flex-shrink:0;position:relative;z-index:0;
  box-shadow:0 4px 18px var(--gold-glow),0 2px 4px rgba(0,0,0,0.06);
  animation:logoBreath 2.5s ease-in-out infinite;
  user-select:none;
}
.logo-icon::before{
  content:'';position:absolute;inset:0;border-radius:14px;
  background:linear-gradient(160deg,rgba(255,255,255,0.28) 0%,rgba(255,255,255,0.08) 45%,transparent 60%);
  pointer-events:none;z-index:2;
}
.logo-text{
  font-size:17px;font-weight:700;color:var(--text-primary);
  letter-spacing:2px;font-family:var(--font-display);
}
.header-nav{display:flex;gap:4px}
.nav-link{
  display:inline-block;padding:8px 18px;border-radius:8px;
  font-size:14px;font-weight:600;color:var(--text-secondary);
  transition:all 0.2s;text-decoration:none;
}
.nav-link:hover{background:var(--bg-primary);color:var(--gold-dark)}
.nav-link.active{background:var(--gold-glow);color:var(--gold-dark)}

/* ========== 03: Layout ========== */
.page-wrap{display:flex;min-height:1px;flex:1}
.sidebar{
  width:var(--sidebar-width);min-height:100vh;flex-shrink:0;
  background:var(--bg-sidebar);border-right:1px solid var(--border);
  padding:40px 20px 30px;display:flex;flex-direction:column;
  position:sticky;top:0;z-index:10;
}
.main{flex:1;display:flex;flex-direction:column;min-width:0;padding:0 32px 40px}
.content{max-width:900px;margin:0 auto;width:100%;padding-top:36px}

/* ========== 03: Sidebar Brand ========== */
.sidebar-head{
  display:flex;flex-direction:column;align-items:center;gap:8px;
  margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--border);
  color:var(--text-primary);text-decoration:none;
}
.sidebar-logo{
  width:52px;height:52px;border-radius:18px;
  display:flex;align-items:center;justify-content:center;
  background:var(--gold-gradient);color:#fff;
  font-size:26px;font-weight:900;font-family:var(--font-display);
  position:relative;z-index:0;
  box-shadow:0 6px 24px var(--gold-glow),0 2px 6px rgba(0,0,0,0.06);
  animation:logoBreathSidebar 2.5s ease-in-out infinite;
  user-select:none;
}
.sidebar-logo::before{
  content:'';position:absolute;inset:0;border-radius:18px;
  background:linear-gradient(160deg,rgba(255,255,255,0.28) 0%,rgba(255,255,255,0.08) 45%,transparent 60%);
  pointer-events:none;z-index:2;
}
.sidebar-head h1{font-size:18px;font-weight:700;letter-spacing:1px;text-align:center}
.sidebar-head .sub{font-size:12px;color:var(--text-muted);text-align:center}

/* ========== 04: Sidebar Search ========== */
.sidebar-search{margin-bottom:16px}
.sidebar-search input{
  width:100%;padding:10px 14px;border-radius:var(--radius-sm);
  border:1px solid var(--border);background:var(--bg-input);
  font-size:13px;color:var(--text-primary);outline:none;
  transition:border-color 0.25s,box-shadow 0.25s;
}
.sidebar-search input:focus{border-color:var(--gold);box-shadow:0 0 0 3px var(--gold-glow)}

/* ========== 05: Nav Group ========== */
.nav-group{margin-bottom:12px}
.nav-label{
  display:flex;justify-content:space-between;align-items:center;
  padding:8px 12px;cursor:pointer;font-size:13px;font-weight:600;
  color:var(--text-secondary);user-select:none;border-radius:var(--radius-sm);
}
.nav-label:hover{background:var(--bg-card)}
.nav-chevron{transition:transform 0.25s;font-size:10px}
.nav-group.collapsed .nav-chevron{transform:rotate(-90deg)}
.nav-group.collapsed .nav-items{display:none}
.nav-items{display:flex;flex-direction:column;gap:2px;padding-left:4px}
.nav-item{
  display:block;padding:6px 12px;font-size:13px;border-radius:8px;
  color:var(--text-secondary);transition:all 0.18s;
}
.nav-item:hover{background:var(--bg-card-hover);color:var(--gold-dark)}
.nav-item.active{background:var(--gold-glow);color:var(--gold-dark);font-weight:600}
.nav-item-disabled{cursor:default;opacity:.45;pointer-events:none}

/* ========== 06: Sidebar Footer ========== */
.sidebar-footer{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--border);text-align:center;
}
.sidebar-footer p{font-size:11px;color:var(--text-muted);line-height:1.8;margin:0}
.sidebar-title{
  font-size:18px;font-weight:700;letter-spacing:1px;color:var(--text-primary);
  text-align:center;margin-top:4px;
}
.sidebar-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--border);text-align:center}
.sidebar-foot .sf-ver{font-size:11px;color:var(--text-muted);margin-bottom:8px}
.sidebar-foot .sf-stats{display:flex;flex-wrap:wrap;justify-content:center;gap:8px}
.sidebar-foot .sf-stat{font-size:11px;color:var(--text-muted)}
.sidebar-foot .sf-stat b{color:var(--gold);font-family:var(--font-display)}

/* ========== 07: Floating Toolbar ========== */
.floating-toolbar{position:fixed;top:20px;right:20px;z-index:1100}
.tb-theme{
  position:relative;display:flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:40px;cursor:pointer;
  background:var(--bg-card-solid);border:1px solid var(--border);
  box-shadow:var(--shadow-sm);transition:box-shadow 0.2s;
}
.tb-theme:hover{box-shadow:var(--shadow-md)}
.tb-dot{width:18px;height:18px;border-radius:50%;border:2px solid var(--gold);background:transparent}
.tb-dot[data-t="blue"]{background:linear-gradient(135deg,#3a7bd5,#5a9be6)}
.tb-dot[data-t="emerald"]{background:linear-gradient(135deg,#2d9d6a,#3dbd80)}
.tb-dot[data-t="purple"]{background:linear-gradient(135deg,#8b6bbf,#a88cd4)}
.tb-dot[data-t="crimson"]{background:linear-gradient(135deg,#d06848,#e8896a)}
.tb-dot[data-t="light"]{background:linear-gradient(135deg,#b8941e,#d4af37)}
.tb-dot[data-t="sakura"]{background:linear-gradient(135deg,#d4548c,#f07aa8)}
.tb-dot[data-t="slate"]{background:linear-gradient(135deg,#64748b,#94a3b8)}
.tb-name{font-size:12px;font-weight:600;color:var(--text-primary)}
.tb-theme-dropdown{
  display:none;position:absolute;top:calc(100% + 8px);right:0;
  background:var(--bg-card-solid);border-radius:var(--radius-md);
  border:1px solid var(--border);box-shadow:var(--shadow-md);
  padding:8px;min-width:160px;z-index:1200;
}
.tb-theme.open .tb-theme-dropdown{display:block}
.tb-option{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:var(--radius-sm);cursor:pointer;transition:background 0.15s}
.tb-option:hover{background:var(--bg-primary)}
.tb-option.active{background:var(--gold-glow)}
.opt-dot{width:20px;height:20px;border-radius:50%;flex-shrink:0}
.opt-label{font-size:13px;font-weight:500;color:var(--text-primary)}
.opt-info{display:flex;flex-direction:column}

/* ========== 08: Back to Top ========== */
.back-to-top{
  position:fixed;bottom:30px;right:24px;z-index:900;
  width:44px;height:44px;border-radius:50%;
  background:var(--bg-card-solid);border:1px solid var(--border);
  box-shadow:var(--shadow-sm);color:var(--gold);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;opacity:0;pointer-events:none;
  transition:opacity 0.3s,box-shadow 0.2s;
}
.back-to-top.btt-visible{opacity:1;pointer-events:auto}
.back-to-top:hover{box-shadow:var(--shadow-md)}

/* ========== 09: Page Header ========== */
.ph-header{
  display:flex;align-items:center;gap:16px;margin-bottom:20px;padding-bottom:16px;
  border-bottom:2px solid var(--border);
}
.ph-header h1{font-size:24px;font-weight:900;color:var(--text-primary)}
.ph-header .ph-badge{
  display:inline-block;padding:4px 14px;border-radius:20px;
  background:var(--gold-gradient);color:#fff;
  font-size:12px;font-weight:700;
}

/* ========== 10: Breadcrumb ========== */
.breadcrumb{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-muted);margin-bottom:8px;flex-wrap:wrap}
.breadcrumb a{color:var(--gold)}
.breadcrumb span{color:var(--text-muted)}

/* ========== 11: Table ========== */
.table-wrap{overflow-x:auto;margin:20px 0 32px}
.district-section{margin:16px 0 28px}
.district-table{
  width:100%;border-collapse:collapse;
  background:var(--bg-card-solid);border-radius:var(--radius-md);
  overflow:hidden;box-shadow:var(--shadow-sm);
  border:1px solid var(--border);
}
.district-table thead{background:var(--gold-gradient)}
.district-table thead th{
  color:#fff;padding:12px 16px;text-align:left;
  font-size:14px;font-weight:600;white-space:nowrap;
}
.district-table thead th:first-child{border-radius:var(--radius-md) 0 0 0}
.district-table thead th:last-child{border-radius:0 var(--radius-md) 0 0}
.district-table tbody td{
  padding:11px 16px;font-size:14px;border-bottom:1px solid var(--border);
  color:var(--text-secondary);
}
.district-table tbody tr:last-child td{border-bottom:none}
.district-table tbody tr:hover{background:var(--theme-glow)}
.district-table .code-cell{font-family:var(--font-display);font-weight:700;color:var(--gold-dark);font-size:16px}
.data-table{
  width:100%;border-collapse:collapse;
  background:var(--bg-card-solid);border-radius:var(--radius-md);
  overflow:hidden;box-shadow:var(--shadow-sm);
}
.data-table thead{background:var(--gold-gradient)}
.data-table thead th{
  color:#fff;padding:14px 18px;text-align:left;
  font-size:14px;font-weight:600;white-space:nowrap;
}
.data-table tbody td{padding:12px 18px;font-size:14px;border-bottom:1px solid var(--border);color:var(--text-secondary)}
.data-table tbody tr:last-child td{border-bottom:none}
.data-table tbody tr:hover{background:var(--bg-primary)}
.data-table .code-cell{font-family:var(--font-display);font-weight:700;color:var(--gold-dark);font-size:16px}

/* ========== 12: Category Section ========== */
.section-title-wrap{margin:32px 0 0}
.section-title{display:flex;align-items:center;gap:10px;margin:0 0 16px;padding-bottom:10px;border-bottom:2px solid var(--border-gold)}
.section-title h2{font-size:18px;margin-bottom:0}
.section-title .st-count{font-size:13px;color:var(--text-muted);margin-left:auto}

/* ========== 13: City Card Grid ========== */
.city-card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;margin-bottom:28px}
.city-card{
  display:flex;align-items:center;gap:12px;
  padding:14px 18px;background:var(--bg-card-solid);
  border-radius:var(--radius-sm);border:1px solid var(--border);
  transition:all 0.2s;text-decoration:none;color:var(--text-primary);
  box-shadow:var(--shadow-sm);
}
.city-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--gold)}
.city-card .cc-icon{
  width:36px;height:36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:var(--gold-gradient);color:#fff;
  font-size:18px;font-weight:900;flex-shrink:0;
}
.city-card .cc-info{flex:1;min-width:0}
.city-card .cc-name{font-size:15px;font-weight:600}
.city-card .cc-meta{font-size:12px;color:var(--text-muted);margin-top:2px}

/* ========== 14: Inner Footer ========== */
.main-footer{
  margin-top:40px;padding:24px 0;border-top:1px solid var(--border);
  text-align:center;
}
.main-footer p{font-size:13px;color:var(--text-muted);line-height:2;margin:0}
.main-footer .brand{font-weight:600;color:var(--gold)}

/* ========== 15: Site Footer (city/province pages) ========== */
.page-footer{
  margin-top:48px;padding:32px 24px 24px;
  background:var(--bg-card-solid);
  border-top:3px solid var(--gold);
  border-radius:var(--radius-lg) var(--radius-lg) 0 0;
  text-align:center;
}
.page-footer .pf-brand{
  display:inline-flex;align-items:center;gap:10px;margin-bottom:12px;
}
.page-footer .pf-icon{
  width:32px;height:32px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  background:var(--gold-gradient);color:#fff;font-size:16px;font-weight:900;
}
.page-footer .pf-name{font-size:15px;font-weight:700;color:var(--text-primary)}
.page-footer .pf-desc{
  font-size:12px;color:var(--text-muted);line-height:1.8;max-width:480px;
  margin:0 auto 16px;
}
.page-footer .pf-divider{
  width:60px;height:2px;background:var(--gold-light);border-radius:1px;
  margin:0 auto 16px;
}
.page-footer .pf-copy{
  font-size:12px;color:var(--text-muted);margin-bottom:6px;
}
.page-footer .pf-copy .brand{font-weight:600;color:var(--gold)}
.page-footer .pf-note{
  font-size:11px;color:var(--text-muted);opacity:0.7;
}

/* --- Legacy footer styles (kept for compatibility) --- */
.site-footer{
  margin-top:60px;padding:40px 32px 24px;
  background:var(--bg-card-solid);border-top:2px solid var(--border);
  border-radius:var(--radius-lg) var(--radius-lg) 0 0;
}
.footer-inner{max-width:900px;margin:0 auto}
.footer-top{display:flex;flex-wrap:wrap;gap:32px;padding-bottom:24px;border-bottom:1px solid var(--border)}
.footer-brand{flex:1;min-width:200px}
.f-logo{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.f-logo-icon{
  width:36px;height:36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:var(--gold-gradient);color:#fff;
  font-size:18px;font-weight:900;font-family:var(--font-display);
  position:relative;z-index:0;
  box-shadow:0 3px 12px var(--gold-glow);
  animation:logoBreathFooter 2.5s ease-in-out infinite;
  user-select:none;
}
.f-logo-icon::before{
  content:'';position:absolute;inset:0;border-radius:10px;
  background:linear-gradient(160deg,rgba(255,255,255,0.28) 0%,rgba(255,255,255,0.08) 45%,transparent 60%);
  pointer-events:none;z-index:2;
}
.f-logo-text{font-size:16px;font-weight:700;color:var(--text-primary)}
.f-desc{font-size:13px;color:var(--text-muted);line-height:1.7}
.footer-col{min-width:100px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-primary);margin-bottom:10px}
.footer-col a{display:block;font-size:13px;color:var(--text-muted);padding:3px 0;transition:color 0.15s}
.footer-col a:hover{color:var(--gold)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;padding-top:20px;font-size:12px;color:var(--text-muted);align-items:center}
.footer-links{display:flex;gap:16px}
.footer-links a{color:var(--text-muted);font-size:12px}
.footer-copy{color:var(--text-muted)}
.footer-icp{color:var(--text-muted)}
.brand{font-weight:600;color:var(--gold)}

/* ========== 15: Search Dropdown (compat — legacy sd-item removed) ========== */
.search-wrapper{position:relative}

/* ============================================================
   16: AI 吃喝玩乐引言 — 全新升级
   ============================================================ */

/* --- 16.1 引言主容器 --- */
.ai-intro{
  margin:32px 0 28px;padding:0;
  animation:aiFadeUp 0.6s ease both;
}
@keyframes aiFadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}

/* 标题行 */
.ai-intro-title{
  display:flex;align-items:center;gap:12px;margin-bottom:20px;
}
.ai-intro-title .ait-icon{
  width:40px;height:40px;border-radius:12px;
  background:var(--gold-gradient);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;flex-shrink:0;
}
.ai-intro-title h2{
  font-size:20px;font-weight:700;color:var(--text-primary);margin:0;
  font-family:var(--font-display);
}
.ai-intro-title .ait-badge{
  font-size:11px;color:var(--text-muted);padding:3px 10px;
  background:var(--bg-primary);border-radius:20px;
}

/* --- 16.2 城市概述卡片 --- */
.ai-overview{
  padding:32px 36px;margin-bottom:20px;
  background:var(--intro-card-bg);
  border-radius:var(--radius-md);
  border:1px solid var(--border);
  border-top:3px solid var(--gold);
  box-shadow:var(--shadow-sm);
}
.ai-overview p,
.ai-overview-text{
  font-size:16px;line-height:2.1;color:var(--text-secondary);
  font-family:var(--font-kai);margin:0;letter-spacing:0.02em;
}

/* --- 16.3 吃喝玩乐卡片网格 --- */
.ai-cards{
  display:grid;grid-template-columns:repeat(5,1fr);
  gap:12px;margin-bottom:12px;
}

.ai-card{
  position:relative;overflow:hidden;
  padding:20px 16px 18px;
  background:var(--bg-card-solid);
  border-radius:var(--radius-md);
  border:1px solid var(--border);
  box-shadow:var(--shadow-sm);
  transition:all 0.25s ease;
}
.ai-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
  border-color:var(--gold);
}

/* 卡片头部 — icon + 标题水平对齐 */
.ai-card-head{
  display:flex;align-items:center;gap:10px;margin-bottom:14px;
}
.ai-card-icon{
  width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;flex-shrink:0;
  background:var(--theme-glow);
}
/* 五色 icon 背景 */
.ai-card-icon.eat   {background:linear-gradient(135deg,#f97316,#fbbf24);color:#fff}
.ai-card-icon.drink {background:linear-gradient(135deg,#06b6d4,#22d3ee);color:#fff}
.ai-card-icon.play  {background:linear-gradient(135deg,#8b5cf6,#a78bfa);color:#fff}
.ai-card-icon.joy   {background:linear-gradient(135deg,#ec4899,#f472b6);color:#fff}
.ai-card-icon.travel{background:linear-gradient(135deg,#10b981,#34d399);color:#fff}

/* 旧版兼容（无 .ai-card-head 时，icon 和 h3 垂直居中排列） */
.ai-card > .ai-card-icon + h3{
  text-align:center;margin:6px 0 14px;
}
.ai-card > .ai-card-icon:first-child{
  margin:0 auto;
}

.ai-card h3{
  font-size:20px;font-weight:700;margin:0;letter-spacing:0.06em;line-height:1;
  font-family:var(--font-main);
}
/* Inside .ai-card-head — 水平对齐，不需要标题左侧 margin */
.ai-card-head h3{margin:0;text-align:left}
/* 五色标题 —— 每张卡片一个主题色 */
.ai-card:nth-child(1) h3{color:#f59e0b}  /* 吃 — 暖金 */
.ai-card:nth-child(2) h3{color:#06b6d4}  /* 喝 — 晴蓝 */
.ai-card:nth-child(3) h3{color:#8b5cf6}  /* 玩 — 紫藤 */
.ai-card:nth-child(4) h3{color:#ec4899}  /* 乐 — 品红 */
.ai-card:nth-child(5) h3{color:#10b981}  /* 游 — 翠绿 */
.ai-card-tag{
  font-size:12px;color:var(--text-muted);margin-top:4px;
  display:block;letter-spacing:0.03em;
}

/* 卡片正文列表 */
.ai-card-list{
  list-style:none;margin:0;padding:0;clear:both;
}
.ai-card-list li{
  position:relative;padding-left:14px;
  font-size:13px;line-height:1.85;color:var(--text-secondary);
  font-family:var(--font-main);margin-bottom:5px;
}
.ai-card-list li::before{
  content:'';position:absolute;left:0;top:9px;
  width:5px;height:5px;border-radius:50%;
  background:var(--gold-gradient);flex-shrink:0;
}
.ai-card-list li:last-child{margin-bottom:0}

/* --- 16.4 数据来源标注 --- */
.ai-source{
  display:flex;align-items:center;gap:8px;
  margin-top:16px;padding:10px 16px;
  background:var(--bg-primary);border-radius:var(--radius-sm);
  font-size:12px;color:var(--text-muted);
}
.ai-source .src-icon{font-size:14px;flex-shrink:0}
.ai-source a{color:var(--gold);font-size:12px}
.ai-source a:hover{text-decoration:underline}

/* --- 16.5 JSON数据结构介绍卡片 --- */
.json-intro{
  margin:20px 0;padding:24px 28px;
  background:var(--bg-card-solid);border-radius:var(--radius-md);
  border:1px solid var(--border);box-shadow:var(--shadow-sm);
}
.json-intro-title{
  display:flex;align-items:center;gap:10px;margin-bottom:16px;
}
.json-intro-title .jit-icon{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(135deg,#334155,#64748b);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:900;flex-shrink:0;
  font-family:monospace;
}
.json-intro-title h3{
  font-size:16px;font-weight:700;color:var(--text-primary);margin:0;
}
.json-intro p{
  font-size:13px;line-height:1.75;color:var(--text-secondary);
  margin-bottom:12px;
}
.json-intro code{
  display:block;padding:16px 20px;
  background:#1e293b;color:#e2e8f0;border-radius:var(--radius-sm);
  font-family:'Cascadia Code','Fira Code','Courier New',monospace;
  font-size:12px;line-height:1.6;overflow-x:auto;white-space:pre;
}
.json-intro .json-meta{
  display:flex;flex-wrap:wrap;gap:16px;margin-top:12px;
  font-size:12px;color:var(--text-muted);
}
.json-intro .json-meta span{display:flex;align-items:center;gap:4px}

/* ============================================================
   16.5: Mobile Header & Sidebar Overlay
   ============================================================ */
/* 移动端顶部栏 —— 仅 ≤800px 显示 */
.mobile-header{
  display:none;
}
.hamburger{
  display:flex;flex-direction:column;justify-content:center;gap:5px;
  width:36px;height:36px;padding:6px;
  background:none;border:none;cursor:pointer;
}
.hamburger span{
  display:block;width:22px;height:2.5px;border-radius:2px;
  background:var(--text-primary);transition:all .3s;
}
.hamburger.active span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
.mobile-title{font-size:15px;font-weight:700;letter-spacing:1px;color:var(--text-primary)}

/* 侧边栏遮罩 */
.sidebar-overlay{
  display:none;position:fixed;inset:0;z-index:998;
  background:rgba(0,0,0,.45);opacity:0;
  transition:opacity .3s;
}

/* ============================================================
   17: Responsive
   ============================================================ */
@media (max-width:1100px){
  :root{--sidebar-width:200px}
  .main{padding:0 20px 30px}
  .ai-cards{grid-template-columns:repeat(3,1fr);gap:12px}
}
@media (max-width:800px){
  /* 显示移动端顶部栏 */
  .mobile-header{display:flex;align-items:center;gap:12px;padding:10px 16px;background:var(--bg-primary);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:900}
  .sidebar-overlay.active{display:block;opacity:1}
  /* Sidebar 改为抽屉 */
  .sidebar{
    position:fixed;left:-300px;top:0;bottom:0;z-index:999;
    width:280px;min-height:100vh;
    transition:left .3s ease;
    overflow-y:auto;
    box-shadow:4px 0 24px rgba(0,0,0,.18);
  }
  .sidebar.open{left:0}
  .page-wrap{flex-direction:column}
  .main{padding:16px 16px 30px;margin-left:0 !important}
  .ai-cards{grid-template-columns:repeat(2,1fr);gap:12px}
  /* 移动端：主题切换按钮移到 mobile-header 下方 */
  .floating-toolbar{top:64px;right:12px}
  .floating-toolbar .tb-theme{padding:6px 10px;box-shadow:0 2px 8px rgba(0,0,0,.12)}
}
@media (max-width:480px){
  .content{padding-top:24px}
  .ai-cards{grid-template-columns:1fr}
  .main{padding:0 12px 24px}
  .ai-overview{padding:24px 24px}
  .ai-overview p{font-size:14px;line-height:1.9}
  .ai-card{padding:16px 16px}
  .ai-card p{font-size:12px;line-height:1.7}
}