/* ============================================
   大圣知识库管理系统 — Refined Knowledge Platform
   Design System v2.0
   ============================================ */

/* ---------- Design Tokens ---------- */
:root{
  /* Primary — refined emerald */
  --primary:#059669;--primary-dark:#047857;--primary-light:#ecfdf5;
  --primary-rgb:5,150,105;
  --blue:#3b82f6;--purple:#8b5cf6;--orange:#f59e0b;
  --rose:#f43f5e;--cyan:#06b6d4;

  /* Text */
  --text:#0f172a;--text2:#475569;--text3:#94a3b8;
  --text-inv:#f8fafc;

  /* Backgrounds */
  --bg:#f8fafc;--bg2:#ffffff;--bg3:#f1f5f9;
  --border:#e2e8f0;--border2:#cbd5e1;

  /* Radius */
  --radius:10px;--radius-lg:18px;--radius-xl:24px;

  /* Shadows — layered for depth */
  --shadow:0 1px 2px rgba(15,23,42,.04),0 1px 3px rgba(15,23,42,.06);
  --shadow-md:0 4px 6px -1px rgba(15,23,42,.06),0 2px 4px -2px rgba(15,23,42,.05);
  --shadow-lg:0 12px 24px -4px rgba(15,23,42,.10),0 4px 8px -2px rgba(15,23,42,.06);
  --shadow-xl:0 24px 48px -8px rgba(15,23,42,.14),0 8px 16px -4px rgba(15,23,42,.08);

  /* Glass */
  --glass-bg:rgba(255,255,255,.72);
  --glass-border:rgba(255,255,255,.5);
  --glass-blur:16px;

  /* Gradients */
  --grad-primary:linear-gradient(135deg,#059669 0%,#0d9488 50%,#0891b2 100%);
  --grad-hero:linear-gradient(135deg,#0f172a 0%,#1e293b 40%,#0f3460 100%);

  /* Transitions */
  --ease:cubic-bezier(.4,0,.2,1);
  --ease-out:cubic-bezier(.0,.0,.2,1);
  --ease-spring:cubic-bezier(.34,1.56,.64,1);
  --t-fast:.15s var(--ease);
  --t:.25s var(--ease);
  --t-slow:.4s var(--ease);

  /* Layout */
  --header-h:60px;
  --footer-h:64px;
  --sidebar-w:260px;
  --admin-sidebar-w:240px;
  --content-max:1200px;
  --read-max:820px;
}
@media (min-width:1400px){:root{--read-max:1000px}}
@media (min-width:1800px){:root{--read-max:1180px}}

/* ---------- Dark Mode ---------- */
[data-theme="dark"]{
  --primary:#10b981;--primary-dark:#059669;--primary-light:#064e3b;
  --primary-rgb:16,185,129;
  --blue:#60a5fa;--purple:#a78bfa;--orange:#fbbf24;
  --rose:#fb7185;--cyan:#22d3ee;

  --text:#e2e8f0;--text2:#94a3b8;--text3:#64748b;
  --text-inv:#0f172a;

  --bg:#0b1120;--bg2:#131c31;--bg3:#1e293b;
  --border:#1e293b;--border2:#334155;

  --shadow:0 1px 2px rgba(0,0,0,.2),0 1px 3px rgba(0,0,0,.15);
  --shadow-md:0 4px 6px -1px rgba(0,0,0,.25),0 2px 4px -2px rgba(0,0,0,.2);
  --shadow-lg:0 12px 24px -4px rgba(0,0,0,.35),0 4px 8px -2px rgba(0,0,0,.2);
  --shadow-xl:0 24px 48px -8px rgba(0,0,0,.45),0 8px 16px -4px rgba(0,0,0,.25);

  --glass-bg:rgba(19,28,49,.72);
  --glass-border:rgba(255,255,255,.06);

  --grad-hero:linear-gradient(135deg,#020617 0%,#0f172a 40%,#1e293b 100%);
}

/* ---------- Reset & Base ---------- */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"Plus Jakarta Sans","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--text);background:var(--bg);font-size:15px;line-height:1.65;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  transition:background-color var(--t),color var(--t);
  overflow-x:hidden;
}
a{color:var(--primary);text-decoration:none;transition:color var(--t-fast)}
a:hover{color:var(--primary-dark)}
img{max-width:100%;display:block}
button{font-family:inherit}
input,textarea,select{font-family:inherit}
::selection{background:rgba(var(--primary-rgb),.18);color:inherit}

/* Scrollbar */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border2);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:var(--text3)}
[data-theme="dark"] ::-webkit-scrollbar-thumb{background:#334155}

/* ---------- Utilities ---------- */
.container{max-width:var(--content-max);margin:0 auto;padding:0 28px}
.muted{color:var(--text2)}
.empty{text-align:center;padding:48px;color:var(--text3)}
.hidden{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- Animations ---------- */
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes scaleIn{from{opacity:0;transform:scale(.96)}to{opacity:1;transform:scale(1)}}
@keyframes shimmer{0%{background-position:-200% 0}100%{background-position:200% 0}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes pulseGlow{0%,100%{box-shadow:0 0 0 0 rgba(var(--primary-rgb),.3)}50%{box-shadow:0 0 0 8px rgba(var(--primary-rgb),0)}}
@keyframes gradientShift{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}
@keyframes spin{to{transform:rotate(360deg)}}

.anim-fade-up{animation:fadeUp .5s var(--ease-out) both}
.anim-fade-in{animation:fadeIn .4s var(--ease-out) both}
.anim-scale-in{animation:scaleIn .3s var(--ease-spring) both}

/* Staggered animation delays */
.d-1{animation-delay:.05s}.d-2{animation-delay:.1s}.d-3{animation-delay:.15s}
.d-4{animation-delay:.2s}.d-5{animation-delay:.25s}.d-6{animation-delay:.3s}

/* ---------- Header ---------- */
.site-header{
  background:var(--glass-bg);
  backdrop-filter:blur(var(--glass-blur)) saturate(180%);
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(180%);
  border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:100;
  transition:background var(--t),border-color var(--t);
}
.site-header .container{display:flex;align-items:center;height:var(--header-h);gap:18px;padding:0 20px}
.burger{
  display:none;width:40px;height:40px;
  border:none;background:transparent;
  font-size:22px;color:var(--text);cursor:pointer;
  border-radius:var(--radius);flex-shrink:0;
  transition:background var(--t-fast),color var(--t-fast);
}
.burger:hover{background:var(--bg3);color:var(--primary)}
.logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--text)!important;flex-shrink:0;letter-spacing:-.3px;overflow:hidden}
.logo-text{font-family:"Fraunces",serif;font-weight:600;letter-spacing:-.5px}
.logo-mark{
  width:32px;height:32px;border-radius:9px;
  background:var(--grad-primary);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:800;flex-shrink:0;
  box-shadow:0 2px 8px rgba(var(--primary-rgb),.3);
  transition:transform var(--t),box-shadow var(--t);
}
.logo:hover .logo-mark{transform:scale(1.06) rotate(-3deg);box-shadow:0 4px 14px rgba(var(--primary-rgb),.4)}
.nav{display:flex;gap:4px}
.nav a{
  color:var(--text2);font-weight:600;font-size:14px;
  padding:8px 14px;border-radius:var(--radius);
  transition:all var(--t-fast);
}
.nav a:hover{color:var(--primary);background:var(--primary-light)}
.header-search{margin-left:auto;position:relative}
.header-search input{
  width:240px;padding:8px 14px 8px 36px;
  border:1px solid var(--border);border-radius:var(--radius);
  outline:none;font-size:13px;background:var(--bg3);
  transition:all var(--t-fast);
}
.header-search::before{
  content:"";position:absolute;left:12px;top:50%;transform:translateY(-50%);
  width:14px;height:14px;
  background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5' stroke-linecap='round'><circle cx='11' cy='11' r='8'/><path d='m21 21-4.3-4.3'/></svg>") no-repeat center;
  pointer-events:none;
}
.header-search input:focus{
  border-color:var(--primary);background:var(--bg2);
  box-shadow:0 0 0 3px rgba(var(--primary-rgb),.1);width:280px;
}

/* Theme toggle */
.theme-toggle{
  width:40px;height:40px;border:1px solid var(--border);
  background:var(--bg3);border-radius:var(--radius);
  cursor:pointer;flex-shrink:0;display:flex;align-items:center;justify-content:center;
  font-size:18px;color:var(--text2);
  transition:all var(--t-fast);
}
.theme-toggle:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.theme-toggle .icon-sun{display:none}
.theme-toggle .icon-moon{display:block}
[data-theme="dark"] .theme-toggle .icon-sun{display:block}
[data-theme="dark"] .theme-toggle .icon-moon{display:none}

/* Menu mask */
.menu-mask{position:fixed;inset:0;background:rgba(0,0,0,.5);backdrop-filter:blur(4px);z-index:140;display:none;opacity:0;transition:opacity var(--t)}
body.is-menu-open .menu-mask{display:block;opacity:1}
body.is-menu-open{overflow:hidden}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--bg2);border-top:1px solid var(--border);
  padding:24px;text-align:center;color:var(--text3);font-size:13px;
  margin-top:0;transition:background var(--t),border-color var(--t);
}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:var(--grad-hero);color:#fff;
  padding:90px 0 80px;text-align:center;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(ellipse 600px 300px at 20% 30%,rgba(16,185,129,.18),transparent),
    radial-gradient(ellipse 500px 280px at 80% 60%,rgba(6,182,212,.15),transparent),
    radial-gradient(ellipse 400px 200px at 50% 90%,rgba(139,92,246,.10),transparent);
  animation:gradientShift 12s ease-in-out infinite;
}
.hero::after{
  content:"";position:absolute;inset:0;opacity:.03;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence baseFrequency='.9' numOctaves='2'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
.hero-inner{position:relative;z-index:1;max-width:680px;margin:0 auto;padding:0 24px}
.hero-title{
  font-family:"Fraunces",serif;font-size:46px;font-weight:600;
  margin-bottom:14px;letter-spacing:-1.5px;line-height:1.15;
  animation:fadeUp .6s var(--ease-out) both;
}
.hero-desc{
  font-size:17px;opacity:.78;margin-bottom:36px;line-height:1.6;
  animation:fadeUp .6s var(--ease-out) .1s both;
}
.hero-search{
  display:flex;max-width:560px;margin:0 auto;gap:10px;
  animation:fadeUp .6s var(--ease-out) .2s both;
}
.hero-search input{
  flex:1;padding:15px 22px;border:none;border-radius:var(--radius);
  font-size:15px;outline:none;background:rgba(255,255,255,.95);
  transition:box-shadow var(--t-fast);
}
.hero-search input:focus{box-shadow:0 0 0 4px rgba(255,255,255,.2)}
.hero-search .btn{padding:15px 28px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:9px 20px;border-radius:var(--radius);
  border:1px solid var(--border);background:var(--bg2);color:var(--text);
  cursor:pointer;font-size:14px;font-weight:600;
  transition:all var(--t-fast);text-decoration:none;
  position:relative;overflow:hidden;
}
.btn:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn:active{transform:translateY(0)}
.btn-primary{
  background:var(--grad-primary);color:#fff;border:none;
  box-shadow:0 2px 8px rgba(var(--primary-rgb),.25);
}
.btn-primary:hover{
  color:#fff;transform:translateY(-2px);
  box-shadow:0 6px 20px rgba(var(--primary-rgb),.35);
}
.btn-sm{padding:5px 14px;font-size:13px}
.btn-lg{padding:13px 32px;font-size:15px}
.btn-block{width:100%}

/* ---------- Home ---------- */
.section{padding:52px 0}
.section-title{
  font-family:"Fraunces",serif;font-size:26px;font-weight:600;
  margin-bottom:28px;letter-spacing:-.5px;
  display:flex;align-items:center;gap:12px;
}
.section-title::before{
  content:"";width:4px;height:24px;border-radius:2px;
  background:var(--grad-primary);
}
.home-grid{display:grid;grid-template-columns:1fr 320px;gap:36px}
.book-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:20px}
.book-card{
  background:var(--bg2);border-radius:var(--radius-lg);padding:28px;
  box-shadow:var(--shadow);transition:all var(--t-slow);
  border:1px solid var(--border);position:relative;overflow:hidden;
  display:block;text-decoration:none;
}
.book-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--grad-primary);
  transform:scaleX(0);transform-origin:left;transition:transform var(--t-slow);
}
.book-card:hover{
  box-shadow:var(--shadow-xl);transform:translateY(-6px);
  border-color:transparent;
}
.book-card:hover::before{transform:scaleX(1)}
.book-cover{
  width:52px;height:52px;border-radius:14px;
  background:var(--grad-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:26px;font-weight:800;margin-bottom:18px;
  box-shadow:0 4px 12px rgba(var(--primary-rgb),.2);
  transition:transform var(--t);
}
.book-card:hover .book-cover{transform:scale(1.08) rotate(-4deg)}
.book-card-horizontal{display:flex;align-items:flex-start;gap:16px}
.book-card-horizontal .book-cover{width:56px;height:56px;flex-shrink:0;margin-bottom:0;font-size:16px;line-height:1.3;padding:4px;text-align:center;display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:0}
.book-card-horizontal .book-info{flex:1;min-width:0}
.book-card-horizontal .book-info h3{margin-bottom:4px}
.book-card-horizontal .book-info p{margin-bottom:10px;-webkit-line-clamp:2;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}
.book-card h3{font-size:18px;margin-bottom:8px;color:var(--text);font-weight:700}
.book-card p{font-size:13px;color:var(--text2);margin-bottom:18px;line-height:1.55}
.book-stats{display:flex;gap:18px;font-size:12px;color:var(--text3);font-weight:500}
.book-stats span{display:flex;align-items:center;gap:4px}

/* ---------- Sidebar Cards ---------- */
.side-card{
  background:var(--bg2);border-radius:var(--radius-lg);padding:22px;
  box-shadow:var(--shadow);margin-bottom:20px;
  border:1px solid var(--border);
  transition:box-shadow var(--t);
}
.side-card:hover{box-shadow:var(--shadow-md)}
.side-card h3{
  font-size:15px;margin-bottom:16px;padding-bottom:12px;
  border-bottom:1px solid var(--border);font-weight:700;
}
.doc-rank li{display:flex;align-items:center;gap:8px;padding:8px 0;list-style:none}
.doc-rank li a{display:flex;align-items:center;gap:8px;flex:1;color:var(--text);font-size:13px;transition:color var(--t-fast)}
.doc-rank li a:hover{color:var(--primary)}
.rank-num{
  width:22px;height:22px;border-radius:6px;
  background:var(--bg3);color:var(--text2);
  font-size:11px;display:flex;align-items:center;justify-content:center;
  font-weight:700;flex-shrink:0;transition:all var(--t-fast);
}
.doc-rank li:nth-child(1) .rank-num{background:rgba(244,63,94,.12);color:#f43f5e}
.doc-rank li:nth-child(2) .rank-num{background:rgba(245,158,11,.12);color:#f59e0b}
.doc-rank li:nth-child(3) .rank-num{background:rgba(59,130,246,.12);color:#3b82f6}
.rank-views{font-size:11px;color:var(--text3)}
.doc-list-sm li{display:flex;justify-content:space-between;align-items:center;padding:7px 0;list-style:none;gap:8px}
.doc-list-sm li a{color:var(--text);font-size:13px;transition:color var(--t-fast);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.doc-list-sm li a:hover{color:var(--primary)}
.doc-list-sm .time{font-size:11px;color:var(--text3);flex-shrink:0}

/* ---------- Reader Layout ---------- */
.reader-layout{display:grid;grid-template-columns:var(--sidebar-w) 1fr;min-height:calc(100vh - var(--header-h) - var(--footer-h))}
.reader-sidebar{
  background:var(--bg2);border-right:1px solid var(--border);
  padding:20px 0;position:sticky;top:var(--header-h);
  height:calc(100vh - var(--header-h));overflow-y:auto;
  transition:background var(--t),border-color var(--t);
}
.sidebar-brand{padding:0 20px 14px;border-bottom:1px solid var(--border);margin-bottom:12px;overflow:hidden}
.sidebar-brand .logo{display:flex;align-items:center;gap:8px;text-decoration:none}
.sidebar-brand .logo-text{font-size:16px;font-weight:700;color:var(--text)}
body.no-header .reader-layout{min-height:calc(100vh - var(--footer-h))}
body.no-header .reader-sidebar{top:0;height:calc(100vh - var(--footer-h))}
body.no-header .no-header-main{padding:0}
@media(max-width:900px){
  body.no-header .reader-sidebar{height:100vh;top:0}
  body.no-header .reader-layout{display:block;min-height:100vh}
}
.sidebar-close{
  display:none;position:absolute;top:10px;right:14px;
  width:36px;height:36px;border:none;background:transparent;
  font-size:24px;color:var(--text2);cursor:pointer;
  border-radius:6px;z-index:2;transition:background var(--t-fast),color var(--t-fast);
}
.sidebar-close:hover{background:var(--bg3);color:var(--primary)}
/* 浮动汉堡按钮（hide_header 时显示） */
.sidebar-fab{
  position:fixed;top:12px;left:12px;z-index:160;
  width:40px;height:40px;
  border:1px solid var(--border);border-radius:10px;
  background:var(--bg2);box-shadow:var(--shadow-md);
}
.sidebar-head{padding:0 20px 16px;border-bottom:1px solid var(--border);margin-bottom:12px}
.sidebar-head h2{font-family:"Fraunces",serif;font-size:18px;font-weight:600;margin-bottom:10px;padding-right:30px;letter-spacing:-.3px}
.sidebar-download-group{display:flex;gap:10px;margin-top:4px}
.sidebar-download{
  flex:1 1 0;display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:9px 12px;border-radius:var(--radius);
  border:1px solid var(--primary);background:var(--bg2);color:var(--primary);
  cursor:pointer;font-size:13px;font-weight:600;
  transition:all var(--t-fast);text-decoration:none;
}
.sidebar-download.is-primary{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 2px 8px rgba(var(--primary-rgb),.2)}
.sidebar-download.is-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 4px 12px rgba(var(--primary-rgb),.3)}
.sidebar-download.is-secondary:hover{border-color:var(--primary-dark);color:var(--primary-dark);background:var(--primary-light)}
.sidebar-download svg{flex-shrink:0}

/* Purchase Card — 独立购买区域 */
.purchase-card{
  position:relative;overflow:hidden;
  margin:12px 16px 14px;padding:16px 16px 14px;
  border-radius:var(--radius-lg);
  background:linear-gradient(135deg,rgba(var(--primary-rgb),.06) 0%,rgba(var(--primary-rgb),.02) 100%);
  border:1px solid rgba(var(--primary-rgb),.15);
}
.purchase-card-accent{
  position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--grad-primary);
}
.purchase-card-header{display:flex;align-items:center;gap:7px;margin-bottom:3px}
.purchase-card-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:24px;height:24px;border-radius:7px;
  background:rgba(var(--primary-rgb),.12);color:var(--primary);
  flex-shrink:0;
}
.purchase-card-title{font-size:14px;font-weight:700;color:var(--text);letter-spacing:.3px}
.purchase-card-desc{font-size:12px;color:var(--text3);margin:0 0 12px;line-height:1.5}
.purchase-card-actions{display:flex;gap:10px}
.purchase-btn{
  flex:1 1 0;display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:10px 12px;border-radius:var(--radius);
  border:none;cursor:pointer;font-size:13px;font-weight:700;letter-spacing:.3px;
  transition:transform var(--t),box-shadow var(--t);
  position:relative;overflow:hidden;font-family:inherit;
}
.purchase-btn svg{flex-shrink:0;position:relative;z-index:1}
.purchase-btn span{position:relative;z-index:1}
.purchase-btn::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(255,255,255,.2) 0%,transparent 60%);
  opacity:0;transition:opacity var(--t);
}
.purchase-btn:hover::before{opacity:1}
.purchase-btn:active{transform:translateY(1px)!important}

/* 淘宝购买 — 淘宝橙红 */
.purchase-btn-taobao{
  background:linear-gradient(135deg,#ff6a00 0%,#ff4400 100%);color:#fff;
  box-shadow:0 2px 8px rgba(255,68,0,.25);
}
.purchase-btn-taobao:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(255,68,0,.35)}

/* 微信购买 — 微信绿 */
.purchase-btn-wechat{
  background:linear-gradient(135deg,#2ad04a 0%,#09bb07 100%);color:#fff;
  box-shadow:0 2px 8px rgba(9,187,7,.25);
}
.purchase-btn-wechat:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(9,187,7,.35)}

[data-theme="dark"] .purchase-card{
  background:linear-gradient(135deg,rgba(var(--primary-rgb),.10) 0%,rgba(var(--primary-rgb),.04) 100%);
  border-color:rgba(var(--primary-rgb),.2);
}
@media(max-width:900px){
  .purchase-card{margin:10px 12px 12px}
  .purchase-card-actions{gap:8px}
}

/* Sidebar Search */
.sidebar-search{padding:0 16px;margin-bottom:12px;position:relative}
.sidebar-search-input{
  width:100%;padding:8px 12px 8px 34px;
  border:1px solid var(--border);border-radius:var(--radius);
  font-size:13px;outline:none;background:var(--bg3);color:var(--text);
  transition:all var(--t-fast);font-family:inherit;
}
.sidebar-search-input::placeholder{color:var(--text3)}
.sidebar-search-input:focus{
  border-color:var(--primary);background:var(--bg2);
  box-shadow:0 0 0 3px rgba(var(--primary-rgb),.1);
}
.sidebar-search::before{
  content:"";position:absolute;left:28px;top:50%;transform:translateY(-50%);
  width:14px;height:14px;pointer-events:none;
  background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5' stroke-linecap='round'><circle cx='11' cy='11' r='8'/><path d='m21 21-4.3-4.3'/></svg>") no-repeat center;
}
.sidebar-search-clear{
  display:none;position:absolute;right:24px;top:50%;transform:translateY(-50%);
  width:20px;height:20px;border:none;background:var(--bg3);
  border-radius:50%;cursor:pointer;font-size:13px;line-height:1;
  color:var(--text3);transition:all var(--t-fast);
  align-items:center;justify-content:center;
}
.sidebar-search-clear:hover{background:var(--border2);color:var(--text)}
.sidebar-search-clear.show{display:flex}

/* Contact — 联系我们区块 */
.contact-actions{display:flex;gap:10px;margin-top:12px}
.contact-btn{
  flex:1 1 0;display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:10px 12px;border-radius:var(--radius);
  border:none;cursor:pointer;font-size:13px;font-weight:700;letter-spacing:.3px;
  transition:transform var(--t),box-shadow var(--t);
  position:relative;overflow:hidden;text-decoration:none;font-family:inherit;
}
.contact-btn svg{flex-shrink:0;position:relative;z-index:1}
.contact-btn span{position:relative;z-index:1}
.contact-btn::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(255,255,255,.2) 0%,transparent 60%);
  opacity:0;transition:opacity var(--t);
}
.contact-btn:hover::before{opacity:1}
.contact-btn:active{transform:translateY(1px)!important}
.contact-qq{
  background:linear-gradient(135deg,#1BB6F5 0%,#0D8AE8 100%);color:#fff;
  box-shadow:0 2px 8px rgba(13,138,232,.25);
}
.contact-qq:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(13,138,232,.35)}
.contact-qq-group{
  background:linear-gradient(135deg,#FF9500 0%,#FF7A00 100%);color:#fff;
  box-shadow:0 2px 8px rgba(255,122,0,.25);
}
.contact-qq-group:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(255,122,0,.35)}

/* 知识库侧边栏底部的联系我们 */
.sidebar-contact{padding:14px 20px;border-top:1px solid var(--border);margin-top:auto}
.sidebar-contact-title{font-size:13px;font-weight:700;color:var(--text2);margin-bottom:10px}
.sidebar-contact-actions{display:flex;gap:10px}
@media(max-width:900px){
  .sidebar-contact{padding:12px 16px}
  .sidebar-contact-actions{gap:8px}
}

/* Version select */
.version-select-wrap{display:flex;align-items:center;gap:8px;margin-top:4px;margin-bottom:10px}
.version-label{font-size:12px;color:var(--text2);white-space:nowrap;flex-shrink:0;font-weight:600}
.version-select{
  flex:1 1 auto;min-width:0;
  padding:7px 10px;border-radius:var(--radius);
  border:1px solid var(--border);background:var(--bg3);color:var(--text);
  font-size:13px;outline:none;cursor:pointer;
  transition:all var(--t-fast);
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='3' stroke-linecap='round'><polyline points='6 9 12 15 18 9'/></svg>");
  background-repeat:no-repeat;background-position:right 8px center;padding-right:26px;
}
.version-select:hover{border-color:var(--primary)}
.version-select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(var(--primary-rgb),.12);background-color:var(--bg2)}
@media(max-width:900px){
  .sidebar-download-group{flex-direction:column;gap:8px}
  .sidebar-download{flex:1 1 auto}
}

/* Version rows (admin) */
.version-row{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px;margin-bottom:10px;position:relative}
.version-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;padding-bottom:8px;border-bottom:1px dashed var(--border)}
.version-index{font-size:13px;font-weight:600;color:var(--primary-dark)}
.version-del{width:24px;height:24px;border-radius:6px;border:1px solid rgba(244,63,94,.3);background:rgba(244,63,94,.08);color:#f43f5e;cursor:pointer;font-size:16px;line-height:1;display:flex;align-items:center;justify-content:center;transition:all var(--t-fast)}
.version-del:hover{background:rgba(244,63,94,.15);color:#dc2626}
.form-card-sub{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px 2px;margin-top:6px}

/* Sidebar nav */
.sidebar-nav{padding:0 8px}
.cat-group{margin-bottom:4px;border-radius:var(--radius);overflow:hidden}
.cat-group > details{background:transparent}
.cat-group > details > summary{
  list-style:none;cursor:pointer;user-select:none;
  display:flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;color:var(--text);
  padding:10px 14px 10px 10px;border-radius:var(--radius);
  transition:all var(--t-fast);letter-spacing:.2px;
}
.cat-group > details > summary:hover{background:var(--bg3);color:var(--primary)}
.cat-group > details > summary::before{
  content:"";width:0;height:0;
  border-left:5px solid var(--text3);
  border-top:4px solid transparent;
  border-bottom:4px solid transparent;
  transform:rotate(0);transition:transform var(--t);
  flex-shrink:0;margin-left:2px;
}
.cat-group > details[open] > summary::before{transform:rotate(90deg);border-left-color:var(--primary)}
.cat-group > details[open] > summary{color:var(--primary)}
.cat-group > details > summary::-webkit-details-marker{display:none}

.doc-links{padding:2px 0 8px 16px}
.doc-link{
  display:block;padding:6px 10px;border-radius:var(--radius);
  color:var(--text2);font-size:13px;font-weight:400;line-height:1.55;
  margin-bottom:1px;transition:all var(--t-fast);
}
.doc-link:hover{background:var(--primary-light);color:var(--primary-dark)}
.doc-link.active{background:var(--primary-light);color:var(--primary-dark);font-weight:600}

/* Reader content */
.reader-content{padding:36px 52px;max-width:var(--read-max);width:100%;min-width:0;margin:0 auto;overflow-wrap:break-word;word-break:break-word}
.breadcrumb{font-size:13px;color:var(--text3);margin-bottom:20px;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.breadcrumb a{color:var(--text2);transition:color var(--t-fast)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{color:var(--text)}
.article-title{
  font-family:"Fraunces",serif;font-size:32px;font-weight:600;
  margin-bottom:12px;letter-spacing:-.5px;line-height:1.25;
}
.article-meta{font-size:13px;color:var(--text3);margin-bottom:32px;padding-bottom:16px;border-bottom:1px solid var(--border);display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.article-meta span{display:flex;align-items:center;gap:5px}
.article-body{font-size:15.5px;line-height:1.85;color:var(--text);overflow-wrap:break-word;word-break:break-word}
.article-body h1{font-family:"Fraunces",serif;font-size:27px;font-weight:600;margin:34px 0 16px;letter-spacing:-.3px}
.article-body h2{font-family:"Fraunces",serif;font-size:23px;font-weight:600;margin:30px 0 14px;padding-bottom:8px;border-bottom:1px solid var(--border);letter-spacing:-.2px}
.article-body h3{font-size:19px;font-weight:700;margin:26px 0 12px}
.article-body h4{font-size:16px;margin:22px 0 10px;color:var(--text);font-weight:700}
.article-body h5,.article-body h6{font-size:14px;margin:18px 0 8px;color:var(--text2);font-weight:700}
.article-body p{margin:14px 0}
.article-body ul,.article-body ol{margin:14px 0;padding-left:24px}
.article-body li{margin:6px 0}
.article-body blockquote{
  border-left:4px solid var(--primary);background:var(--primary-light);
  padding:14px 18px;margin:18px 0;border-radius:0 var(--radius) var(--radius) 0;
  color:var(--text2);
}
.article-body pre{
  background:#0f172a;color:#e2e8f0;padding:18px;border-radius:var(--radius);
  overflow-x:auto;margin:18px 0;font-size:13.5px;line-height:1.7;
  border:1px solid #1e293b;
}
.article-body code{
  background:var(--bg3);padding:2px 7px;border-radius:5px;
  font-size:13px;font-family:"JetBrains Mono","SF Mono",Consolas,"Liberation Mono",Menlo,monospace;
  color:var(--primary-dark);
}
[data-theme="dark"] .article-body code{color:var(--primary)}
.article-body pre code{background:none;padding:0;color:#e2e8f0;font-size:13.5px}
.article-body table{width:100%;border-collapse:collapse;margin:18px 0;border-radius:var(--radius);overflow:hidden}
.article-body th,.article-body td{border:1px solid var(--border);padding:10px 14px;text-align:left}
.article-body th{background:var(--bg3);font-weight:700;font-size:13px;text-transform:uppercase;letter-spacing:.3px}
.article-body img{border-radius:var(--radius);max-width:100%;height:auto;box-shadow:var(--shadow-md)}
.article-body .md-video,.article-body .md-iframe{max-width:100%}
.article-body hr{border:none;border-top:1px solid var(--border);margin:32px 0}
.article-body ul.todo{list-style:none;padding-left:0;margin:14px 0}
.article-body ul.todo li{padding-left:26px;position:relative;margin:6px 0}
.article-body ul.todo li::before{content:"\2610";position:absolute;left:0;top:0;color:var(--text3);font-size:16px;line-height:1.85}
.article-body ul.todo li.checked::before{content:"\2611";color:var(--primary)}
.article-body mark{background:#fef08a;padding:1px 5px;border-radius:3px;color:#713f12}
[data-theme="dark"] .article-body mark{background:rgba(250,204,21,.2);color:#fde047}
.article-body sub{font-size:.78em;color:var(--text2)}
.article-body sup{font-size:.78em;color:var(--text2)}
.article-body s{color:var(--text3);text-decoration:line-through}
.article-body .md-details{background:var(--bg2);border:1px solid var(--border);border-radius:12px;margin:18px 0;overflow:hidden;box-shadow:var(--shadow)}
.article-body .md-details summary{padding:13px 18px;background:var(--bg3);cursor:pointer;font-weight:600;color:var(--text);outline:none;user-select:none;transition:background var(--t-fast)}
.article-body .md-details summary:hover{background:var(--primary-light)}
.article-body .md-details[open] summary{border-bottom:1px solid var(--border)}
.article-body .md-details > div{padding:16px 20px}
.article-body .md-video,.article-body .md-iframe{width:100%;margin:20px 0;border-radius:12px;overflow:hidden;background:#000;box-shadow:var(--shadow-lg)}
.article-body .md-video video{width:100%;display:block;max-height:560px;object-fit:contain;background:#000}
.article-body .md-iframe iframe{width:100%;display:block;border:0;min-height:420px;background:#fff}
.article-body .fn-ref{margin:0 2px;font-weight:600}
.article-body .fn-ref a{color:var(--primary);text-decoration:none}
.article-body .fn-ref a:hover{text-decoration:underline}
.article-body .footnote-def{margin:6px 0;padding:8px 14px;background:var(--bg3);border-left:3px solid var(--primary);border-radius:0 var(--radius) var(--radius) 0;font-size:13px;color:var(--text2)}
.article-body .footnote-def sup{color:var(--primary);font-weight:700;margin-right:4px}
.article-body .footnote-def a{color:var(--primary);text-decoration:none;margin-right:6px}
.article-body a{color:var(--primary);text-decoration:none;border-bottom:1px dashed rgba(var(--primary-rgb),.35);transition:all var(--t-fast)}
.article-body a:hover{color:var(--primary-dark);border-bottom-color:var(--primary)}
.article-body table.md-table{width:100%;display:block;overflow-x:auto}

/* Doc pager */
.doc-pager{display:flex;justify-content:space-between;margin-top:52px;padding-top:24px;border-top:1px solid var(--border);gap:16px}
.pager-prev,.pager-next{flex:1;padding:18px;border-radius:var(--radius);background:var(--bg2);border:1px solid var(--border);transition:all var(--t-fast)}
.pager-prev:hover,.pager-next:hover{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.pager-next{text-align:right}
.pager-label{display:block;font-size:12px;color:var(--text3);margin-bottom:4px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}
.pager-title{display:block;font-size:14px;font-weight:600}

/* ---------- Search ---------- */
.search-page{padding:36px 0}
.page-title{font-family:"Fraunces",serif;font-size:30px;font-weight:600;margin-bottom:24px;letter-spacing:-.5px}
.search-form{display:flex;gap:12px;margin-bottom:24px}
.search-form .form-input{flex:1}
.result-count{color:var(--text2);margin-bottom:16px;font-size:14px}
.search-results{display:flex;flex-direction:column;gap:12px}
.result-item{background:var(--bg2);border-radius:var(--radius);padding:22px 26px;box-shadow:var(--shadow);border:1px solid var(--border);transition:all var(--t-fast);display:block}
.result-item:hover{border-color:var(--primary);box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.result-item h3{font-size:16px;margin-bottom:8px;font-weight:700}
.result-item p{font-size:13px;color:var(--text2);margin-bottom:8px;line-height:1.6}
.result-meta{font-size:12px;color:var(--text3);display:flex;gap:10px}

/* ---------- Pagination ---------- */
.pagination{display:flex;gap:6px;justify-content:center;margin-top:28px;flex-wrap:wrap}
.pagination a{min-width:38px;height:38px;display:flex;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:var(--radius);padding:0 12px;font-size:13px;color:var(--text2);font-weight:600;transition:all var(--t-fast)}
.pagination a:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.pagination a.current{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 2px 8px rgba(var(--primary-rgb),.25)}

/* ---------- Empty State ---------- */
.empty-state{text-align:center;padding:80px 20px;color:var(--text3)}
.empty-state p{margin-bottom:16px;font-size:15px}

/* ---------- Login ---------- */
.login-page{
  min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:var(--grad-hero);position:relative;overflow:hidden;
}
.login-page::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(ellipse 500px 300px at 25% 30%,rgba(16,185,129,.15),transparent),
    radial-gradient(ellipse 400px 250px at 75% 70%,rgba(6,182,212,.12),transparent);
  animation:gradientShift 15s ease-in-out infinite;
}
.login-page::after{
  content:"";position:absolute;inset:0;opacity:.03;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence baseFrequency='.9' numOctaves='2'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
.login-box{
  background:var(--bg2);border-radius:var(--radius-xl);padding:44px;
  width:400px;box-shadow:var(--shadow-xl);
  position:relative;z-index:1;
  animation:scaleIn .4s var(--ease-spring) both;
  border:1px solid var(--border);
}
.login-head{text-align:center;margin-bottom:32px;overflow:hidden}
.login-head .logo-mark{width:52px;height:52px;font-size:26px;margin:0 auto 16px;box-shadow:0 4px 16px rgba(var(--primary-rgb),.3)}
.login-head h2{font-family:"Fraunces",serif;font-size:24px;margin-bottom:4px;font-weight:600}
.login-head p{font-size:13px;color:var(--text2)}
.login-hint{text-align:center;color:var(--text3);font-size:12px;margin-top:18px}

/* ---------- Forms ---------- */
.form-item{margin-bottom:20px}
.form-item label{display:block;margin-bottom:7px;font-weight:600;font-size:13px;color:var(--text)}
.form-item .req{color:#f43f5e}
.form-input,.form-textarea,.form-select{
  width:100%;padding:11px 15px;border:1px solid var(--border);
  border-radius:var(--radius);font-size:14px;outline:none;
  transition:all var(--t-fast);font-family:inherit;
  background:var(--bg3);color:var(--text);
}
.form-input:focus,.form-textarea:focus,.form-select:focus{
  border-color:var(--primary);box-shadow:0 0 0 3px rgba(var(--primary-rgb),.1);background:var(--bg2);
}
.form-textarea{min-height:100px;resize:vertical}
.form-row{display:flex;gap:16px}
.form-row .form-item{flex:1}
.form-card{background:var(--bg2);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow);max-width:680px;border:1px solid var(--border)}
.form-actions{display:flex;gap:12px;margin-top:24px}
.form-card h3{font-size:16px;margin:24px 0 12px;padding-top:16px;border-top:1px solid var(--border);font-weight:700}
.form-card h3 small{font-size:12px;color:var(--text3);font-weight:400}

/* Radio group */
.radio-group{display:flex;gap:22px;margin-top:10px;font-size:14px;flex-wrap:wrap}
.radio-group label{display:flex;align-items:center;gap:6px;cursor:pointer;font-weight:400;margin-bottom:0}
.radio-group input[type="radio"]{accent-color:var(--primary);width:16px;height:16px;cursor:pointer}

/* ---------- Admin Layout ---------- */
.admin-layout{display:flex;min-height:100vh}
.admin-sidebar{
  width:var(--admin-sidebar-w);
  background:#0f172a;color:#cbd5e1;flex-shrink:0;
  display:flex;flex-direction:column;
  position:sticky;top:0;height:100vh;
  border-right:1px solid #1e293b;
}
.admin-logo{
  display:flex;align-items:center;gap:10px;
  padding:22px 20px;font-size:16px;font-weight:700;color:#fff;
  border-bottom:1px solid #1e293b;overflow:hidden;
}
.admin-logo .logo-mark{width:32px;height:32px;font-size:17px;box-shadow:0 2px 10px rgba(var(--primary-rgb),.4)}
.admin-logo strong{font-family:"Fraunces",serif;font-weight:600}
.admin-menu{display:flex;flex-direction:column;padding:14px 0;flex:1;overflow-y:auto}
.admin-menu a{
  padding:11px 20px;color:#94a3b8;font-size:14px;font-weight:500;
  transition:all var(--t-fast);
  border-left:3px solid transparent;
  display:flex;align-items:center;gap:10px;
}
.admin-menu a:hover{background:rgba(255,255,255,.04);color:#fff}
.admin-menu a.active{
  background:linear-gradient(90deg,rgba(var(--primary-rgb),.15),transparent);
  color:var(--primary);border-left-color:var(--primary);
  font-weight:600;
}
.admin-main{flex:1;display:flex;flex-direction:column;background:var(--bg);min-width:0}
.admin-topbar{
  background:var(--glass-bg);
  backdrop-filter:blur(var(--glass-blur)) saturate(180%);
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(180%);
  padding:0 28px;height:var(--header-h);
  display:flex;align-items:center;justify-content:space-between;
  border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:50;
  transition:background var(--t),border-color var(--t);
}
.admin-topbar h1{font-size:17px;font-weight:700}
.admin-user{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:600}
.admin-user .avatar{
  width:34px;height:34px;border-radius:50%;
  background:var(--grad-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;
  box-shadow:0 2px 8px rgba(var(--primary-rgb),.25);
}
.admin-content{padding:28px;flex:1}
.admin-burger{display:none}
.admin-sidebar-close{display:none}
.admin-mask{display:none}

/* ---------- Admin Cards ---------- */
.alert{padding:13px 18px;border-radius:var(--radius);margin-bottom:16px;font-size:14px;font-weight:600;border:1px solid transparent;display:flex;align-items:center;gap:8px}
.alert-success{background:var(--primary-light);color:var(--primary-dark);border-color:rgba(var(--primary-rgb),.2)}
.alert-error{background:rgba(244,63,94,.08);color:#dc2626;border-color:rgba(244,63,94,.2)}
.alert-info{background:rgba(59,130,246,.08);color:#1e40af;border-color:rgba(59,130,246,.2)}
[data-theme="dark"] .alert-info{color:#60a5fa}
.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.page-head h2{font-family:"Fraunces",serif;font-size:22px;font-weight:600;letter-spacing:-.3px}
.page-head h2 small{font-size:13px;color:var(--text3);font-weight:400;margin-left:8px}
.admin-card{background:var(--bg2);border-radius:var(--radius-lg);box-shadow:var(--shadow);overflow:hidden;margin-bottom:20px;border:1px solid var(--border)}
.card-head{padding:16px 24px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.card-body{padding:16px 24px}
.card-foot{padding:12px 24px;border-top:1px solid var(--border)}

/* ---------- Table ---------- */
table.table{width:100%;border-collapse:collapse}
table.table th{padding:12px 16px;text-align:left;font-size:12px;color:var(--text3);font-weight:700;text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border)}
table.table td{padding:13px 16px;border-bottom:1px solid var(--border);font-size:14px}
table.table tr:hover td{background:var(--bg3)}
table.table tr:last-child td{border-bottom:none}
.row-actions{white-space:nowrap;font-size:13px;font-weight:500}
.row-actions a{color:var(--text2);transition:color var(--t-fast);margin-right:10px}
.row-actions a:last-child{margin-right:0}
.row-actions a:hover{color:var(--primary)}
.row-actions a.danger{color:#f43f5e}
.row-actions a.danger:hover{color:#dc2626}

/* ---------- Tags ---------- */
.tag{display:inline-block;padding:3px 10px;border-radius:6px;font-size:11px;font-weight:600;background:var(--bg3);color:var(--text2)}
.tag-success{background:var(--primary-light);color:var(--primary-dark)}
.tag-warn{background:rgba(245,158,11,.1);color:#92400e}
[data-theme="dark"] .tag-warn{color:#fbbf24}

/* ---------- Stats ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:28px}
.stat-card{
  background:var(--bg2);border-radius:var(--radius-lg);padding:24px;
  box-shadow:var(--shadow);position:relative;overflow:hidden;
  border:1px solid var(--border);
  transition:transform var(--t),box-shadow var(--t);
}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.stat-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px}
.stat-card.green::before{background:var(--primary)}
.stat-card.blue::before{background:var(--blue)}
.stat-card.purple::before{background:var(--purple)}
.stat-card.orange::before{background:var(--orange)}
.stat-card.red::before{background:#ef4444}
.stat-card.teal::before{background:#14b8a6}
.stat-card.indigo::before{background:#6366f1}
.stat-card.dark::before{background:#1e293b}
.stat-label{font-size:13px;color:var(--text2);margin-bottom:8px;font-weight:600}
.stat-value{font-size:34px;font-weight:800;font-family:"Fraunces",serif;letter-spacing:-.5px}

/* ---------- Tree ---------- */
.tree-item{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-radius:var(--radius);transition:background var(--t-fast)}
.tree-item:hover{background:var(--bg3)}
.tree-item span:first-child{font-weight:500}

/* ---------- Filter ---------- */
.filter-form{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.filter-input{padding:7px 12px;border:1px solid var(--border);border-radius:var(--radius);font-size:13px;outline:none;background:var(--bg3);color:var(--text);transition:all var(--t-fast)}
.filter-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(var(--primary-rgb),.1);background:var(--bg2)}

/* ---------- Markdown Editor ---------- */
.doc-editor-card{padding:16px}
.doc-meta-bar{display:flex;gap:12px;margin-bottom:16px;flex-wrap:wrap;align-items:flex-end}
.doc-meta-bar .form-item{margin:0}
.doc-meta-bar .meta-title{flex:2 1 200px;min-width:180px}
.doc-meta-bar .meta-book{flex:1 1 140px;min-width:120px}
.doc-meta-bar .meta-cat{flex:1 1 140px;min-width:120px}
.doc-meta-bar .meta-sort{flex:0 0 80px}
.doc-meta-bar .meta-status{flex:0 0 90px}
.editor-toolbar{display:flex;gap:4px;padding:8px;border:1px solid var(--border);border-radius:var(--radius) var(--radius) 0 0;background:var(--bg3);flex-wrap:wrap;align-items:center}
.editor-toolbar button{padding:5px 10px;border:none;background:none;border-radius:6px;cursor:pointer;font-size:13px;color:var(--text2);white-space:nowrap;transition:all var(--t-fast)}
.editor-toolbar button:hover{background:var(--bg2);color:var(--primary)}
.editor-toolbar button:active{background:var(--primary-light)}
.editor-toolbar-ext .tb-group{display:flex;gap:2px;align-items:center;padding:2px 8px;margin-right:6px;border-right:1px solid var(--border)}
.editor-toolbar-ext .tb-group:last-child{border-right:none;margin-right:0}
.editor-toolbar-ext .tb-group-right{margin-left:auto;border-right:none}
.editor-toolbar-ext button{padding:6px 9px;font-size:13px;border-radius:5px}
.preview-placeholder{color:var(--text3);padding:40px 16px;text-align:center;font-size:13px}

.editor-split{display:flex;gap:0;border:1px solid var(--border);border-top:none;border-radius:0 0 var(--radius) var(--radius);overflow:hidden;transition:all var(--t)}
.editor-textarea{flex:1;padding:16px;border:none;outline:none;font-family:"JetBrains Mono","SF Mono",Consolas,monospace;font-size:14px;line-height:1.65;resize:none;min-height:400px;background:var(--bg2);color:var(--text);transition:box-shadow var(--t-fast)}
.editor-textarea:focus{box-shadow:inset 3px 0 0 var(--primary)}
.editor-preview{flex:1;padding:16px 24px;overflow-y:auto;max-height:520px;background:var(--bg2);border-left:1px solid var(--border)}
.editor-preview h1{font-family:"Fraunces",serif;font-size:24px;margin:16px 0 8px;color:var(--text);font-weight:600}
.editor-preview h2{font-family:"Fraunces",serif;font-size:20px;margin:16px 0 8px;padding-bottom:6px;border-bottom:1px dashed var(--border);font-weight:600}
.editor-preview h3{font-size:17px;margin:14px 0 7px;font-weight:700}
.editor-preview h4{font-size:15px;margin:12px 0 6px;font-weight:700}
.editor-preview h5,.editor-preview h6{font-size:14px;margin:10px 0 6px;color:var(--text2);font-weight:700}
.editor-preview p{margin:8px 0;line-height:1.75}
.editor-preview ul,.editor-preview ol{margin:10px 0;padding-left:24px}
.editor-preview li{margin:5px 0}
.editor-preview ul.todo{list-style:none;padding-left:0}
.editor-preview ul.todo li{padding-left:24px;position:relative}
.editor-preview ul.todo li::before{content:"\2610";position:absolute;left:0;top:0;color:var(--text3);font-size:15px;line-height:1.6}
.editor-preview ul.todo li.checked::before{content:"\2611";color:var(--primary)}
.editor-preview mark{background:#fef08a;padding:0 3px;border-radius:3px}
[data-theme="dark"] .editor-preview mark{background:rgba(250,204,21,.2);color:#fde047}
.editor-preview sub{font-size:.75em;color:var(--text2)}
.editor-preview sup{font-size:.75em;color:var(--text2)}
.editor-preview s{color:var(--text3)}
.editor-preview pre{background:#0f172a;color:#e2e8f0;padding:14px 16px;border-radius:var(--radius);overflow-x:auto;margin:14px 0;font-size:13px;line-height:1.7}
.editor-preview code{background:var(--bg3);padding:2px 6px;border-radius:4px;font-family:"JetBrains Mono","SF Mono",Consolas,monospace;font-size:13px;color:var(--primary-dark)}
[data-theme="dark"] .editor-preview code{color:var(--primary)}
.editor-preview pre code{background:none;padding:0;color:#e2e8f0}
.editor-preview blockquote{border-left:4px solid var(--primary);padding:10px 14px;background:var(--primary-light);color:var(--text2);margin:12px 0;border-radius:0 var(--radius) var(--radius) 0;line-height:1.75}
.editor-preview hr{border:none;border-top:1px solid var(--border);margin:24px 0}
.editor-preview table{border-collapse:collapse;margin:14px 0;font-size:13px}
.editor-preview th,.editor-preview td{border:1px solid var(--border);padding:8px 12px;text-align:left}
.editor-preview th{background:var(--bg3);font-weight:700}
.editor-preview .md-details{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);margin:12px 0;overflow:hidden}
.editor-preview .md-details summary{padding:10px 14px;background:var(--bg3);cursor:pointer;font-weight:600}
.editor-preview .md-details[open] summary{border-bottom:1px solid var(--border)}
.editor-preview .md-details > div{padding:12px 14px}
.editor-preview .md-video,.editor-preview .md-iframe{width:100%;margin:16px 0;border-radius:var(--radius);overflow:hidden;background:#000}
.editor-preview .md-video video{width:100%;display:block;max-height:520px;object-fit:contain}
.editor-preview .md-iframe iframe{width:100%;display:block;border:0;min-height:360px}

/* Editor fullscreen */
body.editor-fullscreen{overflow:hidden}
body.editor-fullscreen #docEditorForm{position:fixed;inset:0;z-index:300;background:var(--bg);border-radius:0;margin:0;display:flex;flex-direction:column}
body.editor-fullscreen .page-head,body.editor-fullscreen .admin-content > :not(#docEditorForm),body.editor-fullscreen .admin-sidebar,body.editor-fullscreen .admin-topbar{display:none}
body.editor-fullscreen .doc-editor-card{box-shadow:none;border:none;padding:12px}
body.editor-fullscreen .doc-meta-bar{margin-bottom:10px}
body.editor-fullscreen .editor-textarea,body.editor-fullscreen .editor-preview{min-height:0;max-height:none;height:calc(100vh - 180px)}
body.editor-fullscreen .editor-split{flex:1}

/* ---------- EasyMDE 适配 ---------- */
#mdEditor{width:100%;min-height:340px;padding:12px;border:1px solid var(--border);border-radius:var(--radius);font-family:"JetBrains Mono",monospace;font-size:14px;background:var(--bg);color:var(--text);resize:vertical}

.EasyMDEContainer{position:relative;width:100%;max-width:100%;box-sizing:border-box}
.EasyMDEContainer .CodeMirror{display:block}

/* 工具栏 */
.EasyMDEContainer .editor-toolbar{
  display:flex;gap:2px;padding:6px 8px;
  border:1px solid var(--border);border-bottom:none;
  border-radius:var(--radius) var(--radius) 0 0;
  background:var(--bg2);flex-wrap:nowrap;align-items:center;
  overflow-x:auto;overflow-y:hidden;scrollbar-width:thin;
}
.EasyMDEContainer .editor-toolbar button{
  padding:4px 7px;font-size:14px;color:var(--text2);
  border-radius:4px;border:1px solid transparent;
  background:none;cursor:pointer;transition:all var(--t-fast);
  height:28px;display:inline-flex;align-items:center;justify-content:center;
  flex-shrink:0;white-space:nowrap;
}
.EasyMDEContainer .editor-toolbar button:hover{
  background:var(--bg3);color:var(--primary);
}
.EasyMDEContainer .editor-toolbar button.active{
  background:var(--primary-light);color:var(--primary);
}
.EasyMDEContainer .editor-toolbar .separator{
  border-left:1px solid var(--border);border-right:none;
  margin:0 4px;padding:0;width:0;height:20px;background:none;
  flex-shrink:0;
}

/* 编辑器（CodeMirror） */
.EasyMDEContainer .editor-toolbar::-webkit-scrollbar{height:4px}
.EasyMDEContainer .editor-toolbar::-webkit-scrollbar-track{background:transparent}
.EasyMDEContainer .editor-toolbar::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}
.EasyMDEContainer .CodeMirror{
  border:1px solid var(--border);border-top:none;
  border-radius:0 0 var(--radius) var(--radius);
  background:var(--bg);color:var(--text);
  min-height:400px;font-size:14px;line-height:1.6;
  font-family:"JetBrains Mono","Noto Sans SC",monospace;
  height:auto;
}
.EasyMDEContainer .CodeMirror-scroll{min-height:400px}

/* 分屏模式：容器 flex 行布局 */
.EasyMDEContainer.sided--no-fullscreen{display:flex;flex-direction:row;flex-wrap:wrap}
.EasyMDEContainer.sided--no-fullscreen .editor-toolbar{width:100%;border-radius:var(--radius) var(--radius) 0 0}
.EasyMDEContainer.sided--no-fullscreen .CodeMirror-sided{
  width:50%!important;flex:0 0 50%!important;
  border-right:1px solid var(--border)!important;
  border-radius:0 0 0 var(--radius);
}
.EasyMDEContainer.sided--no-fullscreen .editor-preview-active-side{
  flex:0 0 50%!important;width:50%!important;
  position:static!important;top:auto!important;bottom:auto!important;right:auto!important;
  border:1px solid var(--border)!important;border-top:none!important;
  border-radius:0 0 var(--radius) 0;
  min-height:400px;max-height:none!important;
  box-sizing:border-box;
}

/* 预览区通用：覆盖旧 .editor-preview 冲突样式 */
.EasyMDEContainer .editor-preview{
  flex:none;max-height:none;border-left:none;
  background:var(--bg);padding:16px 20px;
  font-size:14px;line-height:1.7;color:var(--text);
}
.EasyMDEContainer .editor-preview p{margin:0 0 12px}
.EasyMDEContainer .editor-preview h1{font-family:"Fraunces",serif;font-size:24px;margin:18px 0 10px;font-weight:600}
.EasyMDEContainer .editor-preview h2{font-family:"Fraunces",serif;font-size:20px;margin:16px 0 8px;padding-bottom:6px;border-bottom:1px dashed var(--border);font-weight:600}
.EasyMDEContainer .editor-preview h3{font-size:17px;margin:14px 0 7px;font-weight:700}
.EasyMDEContainer .editor-preview h4{font-size:15px;margin:12px 0 6px;font-weight:700}
.EasyMDEContainer .editor-preview h5,.EasyMDEContainer .editor-preview h6{font-size:14px;margin:10px 0 6px;color:var(--text2);font-weight:700}
.EasyMDEContainer .editor-preview ul,.EasyMDEContainer .editor-preview ol{margin:10px 0;padding-left:24px}
.EasyMDEContainer .editor-preview li{margin:5px 0}
.EasyMDEContainer .editor-preview pre{
  background:var(--bg3);padding:12px 14px;border-radius:var(--radius);
  overflow-x:auto;font-size:13px;line-height:1.6;margin:12px 0;
}
.EasyMDEContainer .editor-preview code{font-family:"JetBrains Mono",monospace;background:var(--bg3);padding:2px 5px;border-radius:3px;font-size:13px}
.EasyMDEContainer .editor-preview pre code{background:none;padding:0}
.EasyMDEContainer .editor-preview table{border-collapse:collapse;width:100%;margin:12px 0;font-size:13px}
.EasyMDEContainer .editor-preview th,.EasyMDEContainer .editor-preview td{border:1px solid var(--border);padding:6px 10px;text-align:left}
.EasyMDEContainer .editor-preview th{background:var(--bg3);font-weight:700}
.EasyMDEContainer .editor-preview blockquote{
  border-left:3px solid var(--primary);padding:6px 14px;margin:12px 0;
  color:var(--text2);background:var(--bg3);border-radius:0 var(--radius) var(--radius) 0;
}
.EasyMDEContainer .editor-preview img{max-width:100%;border-radius:var(--radius)}
.EasyMDEContainer .editor-preview hr{border:none;border-top:1px solid var(--border);margin:20px 0}

/* 暗色模式 */
[data-theme="dark"] .EasyMDEContainer .editor-toolbar{background:#1e293b;border-color:#334155}
[data-theme="dark"] .EasyMDEContainer .editor-toolbar button{color:#94a3b8}
[data-theme="dark"] .EasyMDEContainer .editor-toolbar button:hover{background:#334155;color:var(--primary)}
[data-theme="dark"] .EasyMDEContainer .CodeMirror{background:#0f172a;color:#e2e8f0;border-color:#334155}
[data-theme="dark"] .EasyMDEContainer .CodeMirror-cursor{border-left-color:#e2e8f0}
[data-theme="dark"] .EasyMDEContainer .editor-preview{background:#0f172a;color:#e2e8f0;border-color:#334155}
[data-theme="dark"] .EasyMDEContainer .editor-preview pre{background:#1e293b}
[data-theme="dark"] .EasyMDEContainer .editor-preview code{background:#1e293b}
[data-theme="dark"] .EasyMDEContainer .editor-preview th{background:#1e293b}
[data-theme="dark"] .EasyMDEContainer .editor-preview blockquote{background:#1e293b}
[data-theme="dark"] .EasyMDEContainer.sided--no-fullscreen .CodeMirror-sided{border-right-color:#334155!important}
[data-theme="dark"] .EasyMDEContainer.sided--no-fullscreen .editor-preview-active-side{border-color:#334155}

/* EasyMDE 全屏 */
.EasyMDEContainer .editor-toolbar.fullscreen,.EasyMDE-fullscreen{z-index:300}

/* EasyMDE 移动端 */
@media(max-width:768px){
  .EasyMDEContainer.sided--no-fullscreen .CodeMirror-sided{
    width:100%!important;flex:0 0 100%!important;border-right:none!important;
    border-radius:0 0 var(--radius) var(--radius);
  }
  .EasyMDEContainer.sided--no-fullscreen .editor-preview-active-side{
    width:100%!important;flex:0 0 100%!important;
    border:1px solid var(--border);border-top:none;border-radius:0 0 var(--radius) var(--radius);
  }
  .doc-editor-card{padding:10px}
  .doc-meta-bar{flex-direction:column;gap:8px}
  .doc-meta-bar .meta-title,.doc-meta-bar .meta-book,.doc-meta-bar .meta-cat{min-width:100%}
}

/* 颜色选择器 */
.color-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;padding:4px 0}
.color-swatch{width:100%;aspect-ratio:1;border:2px solid var(--border);border-radius:6px;cursor:pointer;transition:transform .12s,border-color .12s,box-shadow .12s;padding:0}
.color-swatch:hover{transform:scale(1.12);border-color:var(--primary);box-shadow:0 2px 8px rgba(0,0,0,.15)}
.color-custom-row{display:flex;align-items:center;gap:10px;margin-top:14px;padding-top:12px;border-top:1px solid var(--border)}
.color-custom-row input[type="color"]{width:44px;height:34px;border:2px solid var(--border);border-radius:6px;cursor:pointer;background:none;padding:0}
.color-custom-row span{font-size:13px;color:var(--text2)}

/* Preview fullscreen */
body.preview-fullscreen{overflow:hidden}
.preview-fs-mask{position:fixed;inset:0;background:var(--bg);z-index:400;overflow-y:auto;padding:40px 20px;display:none}
body.preview-fullscreen .preview-fs-mask{display:block}
.preview-fs-wrap{max-width:var(--read-max);margin:0 auto;background:var(--bg2);border-radius:var(--radius-xl);padding:44px 56px;box-shadow:var(--shadow-xl);border:1px solid var(--border)}
.preview-fs-close{position:fixed;top:20px;right:26px;z-index:401;width:46px;height:46px;border-radius:50%;background:var(--primary);color:#fff;border:none;font-size:22px;cursor:pointer;box-shadow:var(--shadow-lg);transition:all var(--t-fast)}
.preview-fs-close:hover{background:var(--primary-dark);transform:scale(1.05)}

/* ---------- Modals ---------- */
.md-modal{position:fixed;inset:0;z-index:500;display:none}
.md-modal[aria-hidden="false"]{display:block}
.md-modal-mask{position:absolute;inset:0;background:rgba(15,23,42,.55);backdrop-filter:blur(4px)}
.md-modal-box{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-48%);
  background:var(--bg2);border-radius:16px;width:560px;max-width:calc(100vw - 28px);max-height:88vh;
  display:flex;flex-direction:column;box-shadow:var(--shadow-xl);
  border:1px solid var(--border);
  animation:md-in .25s var(--ease-spring);
}
.md-modal-lg{width:820px}
@keyframes md-in{from{opacity:0;transform:translate(-50%,-58%) scale(.96)}to{opacity:1;transform:translate(-50%,-48%) scale(1)}}
.md-modal-head{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;font-size:16px;font-weight:700}
.md-close{width:34px;height:34px;border-radius:8px;border:none;background:transparent;font-size:22px;color:var(--text2);cursor:pointer;line-height:1;transition:all var(--t-fast)}
.md-close:hover{background:var(--bg3);color:var(--primary)}
.md-modal-body{padding:20px;overflow-y:auto}
.md-modal-foot{padding:14px 20px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:10px}

/* Video tabs */
.video-tabs{display:flex;gap:4px;margin-bottom:14px;background:var(--bg3);padding:4px;border-radius:var(--radius)}
.vt-tab{flex:1;padding:8px 10px;border:none;background:transparent;border-radius:6px;font-size:13px;color:var(--text2);cursor:pointer;font-weight:600;transition:all var(--t-fast)}
.vt-tab.active{background:var(--bg2);color:var(--primary);box-shadow:var(--shadow)}

/* Upload */
.upload-drop{border:2px dashed var(--border2);border-radius:12px;padding:24px;text-align:center;transition:all var(--t-fast);cursor:pointer;background:var(--bg3)}
.upload-drop:hover,.upload-drop.drag{border-color:var(--primary);background:var(--primary-light)}
.upload-drop-inner{display:flex;flex-direction:column;gap:10px;align-items:center}
.upload-icon{font-size:44px;line-height:1}
.upload-meta{color:var(--text3);font-size:12px;margin:0}
.upload-list{list-style:none;margin:16px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:10px;max-height:210px;overflow-y:auto}
.upload-list:empty{display:none}
.upload-list li{position:relative;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--bg2)}
.upload-list li.checked{outline:2px solid var(--primary);outline-offset:-2px}
.upload-list img{width:100%;height:86px;object-fit:cover;display:block;cursor:pointer}
.upload-list .u-name{font-size:11px;color:var(--text3);padding:3px 6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.upload-list .u-chk{position:absolute;top:4px;left:4px;width:18px;height:18px;accent-color:var(--primary)}
.upload-list .u-state{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(15,23,42,.6);color:#fff;font-size:12px;font-weight:600}
.upload-list .u-state.done{background:rgba(var(--primary-rgb),.82)}
.upload-list .u-state.err{background:rgba(244,63,94,.82)}

/* Reference doc modal */
.ref-search{margin-bottom:12px}
.ref-search input{padding:10px 14px}
.ref-tree{border:1px solid var(--border);border-radius:var(--radius);max-height:360px;overflow-y:auto;padding:8px}
.ref-book{margin-bottom:4px}
.ref-book-head{padding:8px 10px;font-weight:700;color:var(--primary-dark);background:var(--primary-light);border-radius:var(--radius);cursor:pointer;font-size:13px;margin-bottom:4px}
.ref-book-list{padding-left:14px}
.ref-doc{padding:7px 10px;border-radius:5px;cursor:pointer;font-size:13px;color:var(--text2);display:flex;align-items:center;gap:8px;line-height:1.4;transition:all var(--t-fast)}
.ref-doc:hover{background:var(--bg3);color:var(--text)}
.ref-doc.active{background:var(--primary);color:#fff}
.ref-pick{margin-top:12px;padding:12px 14px;border:1px dashed var(--border);border-radius:var(--radius);background:var(--bg3)}
.ref-label{font-size:12px;color:var(--text3);margin-bottom:4px}
.ref-value{font-size:13px;color:var(--text);font-weight:500;word-break:break-all}
.ref-empty{padding:20px;text-align:center;color:var(--text3);font-size:13px}

/* Help modal */
.md-help h3{font-size:14px;margin:16px 0 8px;color:var(--primary-dark)}
.md-help pre{background:#0f172a;color:#e2e8f0;padding:12px 14px;border-radius:var(--radius);overflow-x:auto;margin:0 0 10px;font-size:12.5px;line-height:1.7}
.md-help pre code{background:none;color:#e2e8f0;padding:0}

/* ---------- Logo Image ---------- */
.logo-img{
  display:block;width:32px;height:32px;
  border-radius:8px;object-fit:cover;flex-shrink:0;
  box-shadow:0 2px 8px rgba(0,0,0,.08);
}
.admin-logo .logo-img{width:32px;height:32px;border-radius:8px}
.login-head .logo-img{width:52px;height:52px;border-radius:14px;margin:0 auto 16px}
.sidebar-brand .logo-img{width:28px;height:28px;border-radius:7px}

/* ---------- Book Icon Image ---------- */
.book-icon-img{
  width:100%;height:100%;border-radius:inherit;object-fit:cover;display:block;
}

/* ---------- Upload Field ---------- */
.upload-field{display:flex;gap:14px;align-items:flex-start;margin-top:4px}
.upload-preview{
  width:80px;height:80px;flex-shrink:0;
  border:2px dashed var(--border2);border-radius:var(--radius);
  display:flex;align-items:center;justify-content:center;
  background:var(--bg3);overflow:hidden;transition:all var(--t-fast);
}
.upload-preview:hover{border-color:var(--primary)}
.upload-preview-square{width:64px;height:64px;border-radius:10px}
.upload-preview .preview-img{width:100%;height:100%;object-fit:cover;display:block}
.upload-preview .preview-placeholder-icon{
  font-size:12px;color:var(--text3);font-weight:600;text-transform:uppercase;letter-spacing:.5px;
}
.upload-controls{flex:1;display:flex;gap:8px;align-items:center;flex-wrap:wrap;min-width:0}
.upload-controls .form-input{flex:1;min-width:160px}
.upload-btn{flex-shrink:0}
.upload-clear{flex-shrink:0;color:var(--text3);border-color:var(--border)}
.upload-clear:hover{color:#f43f5e;border-color:#f43f5e}
.upload-file{display:none}
.upload-status{font-size:12px;color:var(--text3);width:100%;margin-top:2px}
.upload-status.error{color:#f43f5e}
.upload-status.success{color:var(--primary)}

/* ---------- Message Page ---------- */
.msg-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}
.msg-box{text-align:center;background:var(--bg2);padding:52px 44px;border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);border:1px solid var(--border);animation:scaleIn .3s var(--ease-spring) both}
.msg-icon{width:68px;height:68px;border-radius:50%;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;font-size:30px}
.msg-icon.success{background:var(--primary-light);color:var(--primary)}
.msg-icon.error{background:rgba(244,63,94,.1);color:#f43f5e}
.msg-box h2{font-family:"Fraunces",serif;font-size:22px;margin-bottom:8px;font-weight:600}
.msg-box p{color:var(--text2);margin-bottom:20px}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  :root{--header-h:54px}
  .container{padding:0 16px}
  .burger{display:inline-flex;align-items:center;justify-content:center}
  .burger-right{margin-left:auto}
  .site-header .container{gap:10px;padding:0 8px}
  .logo-text{font-size:15px}
  .logo{gap:6px}
  .logo-mark{width:28px;height:28px;font-size:15px;border-radius:7px}
  .nav{
    display:none;position:fixed;top:0;right:0;height:100vh;width:72vw;max-width:300px;
    background:var(--bg2);z-index:160;flex-direction:column;gap:0;padding:70px 20px 20px;
    box-shadow:-4px 0 24px rgba(0,0,0,.12);
    transform:translateX(100%);transition:transform var(--t);
  }
  .nav a{padding:14px 0;border-bottom:1px solid var(--border);font-size:15px;font-weight:600;color:var(--text);border-radius:0}
  body.nav-open .nav{display:flex;transform:translateX(0)}
  body.nav-open .site-header{z-index:165}
  .menu-mask{backdrop-filter:none;-webkit-backdrop-filter:none}
  .header-search{display:none;margin:0;position:static;width:100%;padding:8px 0 0}
  .header-search input{width:100%}
  body.nav-open .header-search{display:block;margin-top:20px}
  .header-search input:focus{width:100%}

  .hero{padding:52px 0}
  .hero-title{font-size:28px;letter-spacing:0}
  .hero-desc{font-size:14px;margin-bottom:24px;padding:0 20px}
  .hero-search{padding:0 20px;flex-direction:column}
  .hero-search input{padding:13px 16px;border-radius:var(--radius)}
  .hero-search .btn{width:100%;padding:13px}

  .section{padding:28px 0}
  .section-title{font-size:19px;margin-bottom:16px}
  .home-grid{grid-template-columns:1fr;gap:20px}
  .book-grid{grid-template-columns:1fr;gap:14px}
  .book-card{padding:20px}
  .book-cover{width:42px;height:42px;border-radius:10px;font-size:21px}
  .book-card h3{font-size:16px}
  .side-card{padding:16px;margin-bottom:14px}

  .reader-layout{display:block;min-height:calc(100vh - var(--header-h))}
  .reader-sidebar{
    display:block;position:fixed;top:0;left:0;z-index:150;
    width:80vw;max-width:320px;height:100vh;
    border-right:none;box-shadow:2px 0 24px rgba(0,0,0,.15);
    transform:translateX(-105%);transition:transform var(--t);
    padding:60px 0 20px;
  }
  body.sidebar-open .reader-sidebar{transform:translateX(0)}
  .sidebar-close{display:inline-flex;align-items:center;justify-content:center}
  .sidebar-head h2{font-size:16px;padding-right:24px}
  .version-select-wrap{flex-wrap:wrap}

  .reader-content{padding:20px 16px 40px;max-width:100%;width:100%;min-height:60vh}
  .breadcrumb{font-size:12px;margin-bottom:14px;word-break:break-all;white-space:normal}
  .article-title{font-size:22px;margin-bottom:10px;line-height:1.3}
  .article-meta{font-size:12px;margin-bottom:20px;gap:12px}
  .article-body{font-size:14.5px;line-height:1.8}
  .article-body h1{font-size:20px;margin:24px 0 12px}
  .article-body h2{font-size:18px;margin:20px 0 10px}
  .article-body h3{font-size:16px;margin:16px 0 8px}
  .article-body pre{font-size:12px;padding:14px;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .article-body code{font-size:12px;word-break:break-all}
  .article-body table{font-size:12px;display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .article-body th,.article-body td{padding:6px 8px}
  .article-body blockquote{padding:10px 12px}
  .article-body img{max-width:100%;height:auto}
  .article-body .md-iframe iframe{min-height:240px}

  .doc-pager{flex-direction:column;gap:10px;margin-top:28px;padding-top:16px}
  .pager-prev,.pager-next{padding:12px;text-align:left}
  .pager-next{text-align:left}

  .search-page{padding:20px 0}
  .page-title{font-size:22px;margin-bottom:16px}
  .search-form{flex-direction:column;gap:8px;margin-bottom:16px}
  .search-form .form-input{padding:10px 14px}
  .search-form .btn{width:100%;padding:10px}

  .stat-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .stat-card{padding:16px}
  .stat-value{font-size:24px}

  .form-row{flex-direction:column;gap:0}
  .form-card{padding:20px;border-radius:14px}
  .form-item{margin-bottom:14px}
  .form-actions{flex-direction:column}
  .form-actions .btn{width:100%}

  .admin-burger{
    display:inline-flex;width:36px;height:36px;border:none;
    background:transparent;font-size:22px;cursor:pointer;color:var(--text);
    align-items:center;justify-content:center;flex-shrink:0;margin-right:8px;
  }
  .admin-sidebar{
    display:flex;position:fixed;top:0;left:0;height:100vh;z-index:160;
    transform:translateX(-100%);transition:transform var(--t);
  }
  body.admin-menu-open .admin-sidebar{transform:translateX(0)}
  .admin-sidebar-close{
    display:inline-flex;position:absolute;top:14px;right:14px;
    width:30px;height:30px;border:none;border-radius:8px;
    background:rgba(255,255,255,.08);color:#fff;font-size:20px;
    align-items:center;justify-content:center;cursor:pointer;
  }
  .admin-sidebar-close:hover{background:rgba(255,255,255,.15)}
  .admin-mask{
    position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:140;
    opacity:0;transition:opacity var(--t);
  }
  body.admin-menu-open .admin-mask{display:block;opacity:1}
  .admin-topbar{padding:0 14px}
  .admin-content{padding:14px}
  .admin-user span:nth-child(1){display:none}
  .page-head{flex-direction:column;gap:10px;align-items:flex-start;margin-bottom:14px}
  .page-head h2{font-size:18px}
  .admin-card{border-radius:14px;margin-bottom:12px}
  .card-head,.card-body,.card-foot{padding:12px 14px}
  .row-actions a{margin-right:4px}
  table.table{font-size:12px;display:block;overflow-x:auto}
  table.table th,table.table td{padding:8px 10px;white-space:nowrap}
  .editor-split{flex-direction:column}
  .editor-preview{border-left:none;border-top:1px solid var(--border);max-height:300px}
  .doc-editor-card{padding:10px}
  .doc-meta-bar{flex-direction:column;gap:10px;margin-bottom:12px}
  .doc-meta-bar .form-item{margin-bottom:0}

  .login-box{width:92vw;padding:30px 22px;border-radius:16px}
  .login-head{margin-bottom:22px}
  .login-head h2{font-size:19px}

  .upload-field{flex-direction:column;gap:10px}
  .upload-preview{width:64px;height:64px}
  .upload-controls{width:100%}
  .upload-controls .form-input{min-width:0;flex:1}

  .editor-toolbar-ext .tb-group{padding:2px 4px;margin-right:3px}
  .editor-toolbar-ext .tb-group-right{margin-left:0}
  .editor-toolbar-ext button{padding:6px 7px;font-size:12px}
  .md-modal-box{width:calc(100vw - 20px);max-height:92vh}
  .md-modal-head{padding:12px 14px;font-size:15px}
  .md-modal-body{padding:14px}
  .md-modal-foot{padding:10px 14px}
  .upload-list{grid-template-columns:repeat(3,1fr)}
  .preview-fs-wrap{padding:16px}
  .preview-fs-close{top:12px;right:12px;width:40px;height:40px;font-size:20px}
}

/* ========== 问题反馈 ========== */

/* 侧边栏反馈区块 */
.sidebar-feedback{padding:14px 20px;border-top:1px solid var(--border)}
.sidebar-feedback-title{font-size:13px;font-weight:700;color:var(--text);margin-bottom:4px}
.sidebar-feedback-desc{font-size:12px;color:var(--text3);margin-bottom:10px}
.feedback-btn{
  display:flex;align-items:center;justify-content:center;gap:6px;
  width:100%;padding:9px 14px;border:none;border-radius:var(--radius);
  background:var(--primary);color:#fff;font-size:13px;font-weight:600;
  text-decoration:none;cursor:pointer;transition:opacity var(--t-fast);
}
.feedback-btn:hover{opacity:.88}

/* 前台反馈页面 */
.feedback-page{padding:40px 16px;max-width:var(--read-max);margin:0 auto}
.feedback-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.feedback-head h1{font-family:"Fraunces",serif;font-size:28px;font-weight:600}
.feedback-subtitle{font-size:14px;color:var(--text3);margin-bottom:32px}
.feedback-section{margin-bottom:40px}
.feedback-section-title{
  font-size:18px;font-weight:700;margin-bottom:16px;padding-bottom:10px;
  border-bottom:2px solid var(--border);
}
.feedback-empty{text-align:center;padding:48px 20px;color:var(--text3);font-size:14px}

/* 反馈列表 */
.feedback-list{display:flex;flex-direction:column;gap:10px}
.feedback-item{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 18px;border-radius:var(--radius);background:var(--bg2);
  border:1px solid var(--border);cursor:pointer;transition:border-color var(--t-fast),box-shadow var(--t-fast)
}
.feedback-item:hover{border-color:var(--primary);box-shadow:0 2px 8px rgba(0,0,0,.04)}
.feedback-item-main{display:flex;align-items:center;gap:10px;flex:1;min-width:0}
.feedback-item-title{font-size:14px;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.feedback-item-time{font-size:12px;color:var(--text3);white-space:nowrap}

/* 状态标签 */
.feedback-status{
  display:inline-block;padding:2px 8px;border-radius:5px;font-size:11px;font-weight:600;white-space:nowrap
}
.feedback-status-warn{background:rgba(245,158,11,.1);color:#92400e}
[data-theme="dark"] .feedback-status-warn{color:#fbbf24}
.feedback-status-info{background:rgba(59,130,246,.1);color:#1d4ed8}
[data-theme="dark"] .feedback-status-info{color:#60a5fa}
.feedback-status-success{background:var(--primary-light);color:var(--primary-dark)}

/* 反馈表单 */
.feedback-form .form-item{margin-bottom:16px}
.feedback-form-actions{display:flex;align-items:center;gap:14px}
.feedback-form-msg{font-size:13px}

/* 反馈弹窗 */
.feedback-modal{position:fixed;inset:0;z-index:300;display:none}
.feedback-modal.active{display:block}
.feedback-modal-mask{position:absolute;inset:0;background:rgba(0,0,0,.5);opacity:0;transition:opacity var(--t)}
.feedback-modal.active .feedback-modal-mask{opacity:1}
.feedback-modal-body{
  position:relative;max-width:620px;margin:60px auto 0;background:var(--bg2);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);padding:32px;
  border:1px solid var(--border);max-height:80vh;overflow-y:auto;
  animation:fbModalIn .2s ease;
}
@keyframes fbModalIn{from{transform:translateY(-20px);opacity:0}to{transform:translateY(0);opacity:1}}
.feedback-modal-close{
  position:absolute;top:14px;right:14px;width:32px;height:32px;border:none;
  border-radius:8px;background:var(--bg3);color:var(--text2);font-size:22px;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:background var(--t-fast)
}
.feedback-modal-close:hover{background:var(--border)}

/* 弹窗内容 */
.feedback-detail-title{font-size:20px;font-weight:600;margin-bottom:12px;padding-right:40px}
.feedback-detail-body{
  font-size:14px;line-height:1.8;color:var(--text);margin:16px 0;
  padding:14px 16px;background:var(--bg3);border-radius:var(--radius);
  white-space:pre-wrap;word-break:break-word
}
.feedback-detail-time{font-size:12px;color:var(--text3)}
.feedback-detail-reply{
  margin-top:20px;padding:16px;background:var(--primary-light);border-radius:var(--radius);
  border-left:3px solid var(--primary)
}
.feedback-detail-label{font-size:13px;font-weight:700;color:var(--primary-dark);margin-bottom:8px}
.feedback-detail-reply-body{font-size:14px;line-height:1.8;color:var(--text);white-space:pre-wrap;word-break:break-word}
.feedback-detail-reply-time{font-size:12px;color:var(--text3);margin-top:8px}
.feedback-detail-noreply{
  margin-top:20px;padding:14px 16px;text-align:center;font-size:13px;color:var(--text3);
  background:var(--bg3);border-radius:var(--radius)
}

/* 后台补充样式 */
.tag-info{background:rgba(59,130,246,.1);color:#1d4ed8}
[data-theme="dark"] .tag-info{color:#60a5fa}
.btn-danger{background:#f43f5e;color:#fff}
.btn-danger:hover{background:#dc2626}
.table-vertical th{width:120px;text-align:right;white-space:nowrap;background:var(--bg3)}
.feedback-admin-content{font-size:14px;line-height:1.8;color:var(--text);padding:8px 0}
.feedback-admin-form{margin-top:24px;padding-top:20px;border-top:1px solid var(--border)}
.feedback-admin-form .form-item{margin-bottom:16px}

/* 移动端反馈页面适配 */
@media (max-width:900px){
  .feedback-page{padding:20px 16px}
  .feedback-head h1{font-size:22px}
  .feedback-item{flex-direction:column;align-items:flex-start;gap:6px}
  .feedback-modal-body{margin:16px;max-height:calc(100vh - 32px);padding:20px}
  .feedback-detail-title{font-size:17px}
  .feedback-captcha-row{flex-wrap:wrap}
  .feedback-captcha-input{flex:1 1 auto;width:120px}
  .feedback-upload-thumbs{grid-template-columns:repeat(2,1fr)}
  .feedback-detail-images-grid{grid-template-columns:repeat(2,1fr)}
  .feedback-subnav{flex-wrap:wrap}
}

/* 图片上传区域 */
.feedback-upload-area{display:flex;align-items:flex-start;flex-wrap:wrap;gap:10px}
.feedback-upload-thumbs{display:grid;grid-template-columns:repeat(3,80px);gap:8px;width:100%}
.feedback-thumb{position:relative;width:80px;height:80px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}
.feedback-thumb img{width:100%;height:100%;object-fit:cover}
.feedback-thumb-remove{position:absolute;top:2px;right:2px;width:20px;height:20px;border:none;border-radius:50%;background:rgba(0,0,0,.55);color:#fff;font-size:14px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0}
.feedback-thumb-remove:hover{background:rgba(220,38,38,.85)}
.feedback-upload-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border:1px dashed var(--border);border-radius:var(--radius);background:var(--bg2);color:var(--text2);font-size:13px;cursor:pointer;transition:border-color var(--t-fast),color var(--t-fast)}
.feedback-upload-btn:hover{border-color:var(--primary);color:var(--primary)}
.feedback-upload-msg{font-size:12px;color:var(--text3);align-self:center}

/* 验证码 */
.feedback-captcha-row{display:flex;align-items:center;gap:10px;max-width:320px}
.feedback-captcha-input{width:120px!important;flex-shrink:0;text-transform:uppercase;letter-spacing:2px}
.feedback-captcha-img{height:40px;border-radius:var(--radius);cursor:pointer;border:1px solid var(--border);flex-shrink:0}
.feedback-captcha-refresh{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg2);color:var(--text2);cursor:pointer;flex-shrink:0;transition:color var(--t-fast)}
.feedback-captcha-refresh:hover{color:var(--primary)}

/* 反馈关闭提示 */
.feedback-disabled{text-align:center;padding:60px 20px;color:var(--text3);font-size:15px;background:var(--bg2);border-radius:var(--radius-lg);margin-bottom:20px}

/* 弹窗中QQ和图片 */
.feedback-detail-qq{font-size:13px;color:var(--text3);margin-top:8px}
.feedback-detail-images{margin-top:16px}
.feedback-detail-images-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:8px}
.feedback-detail-images-grid a{display:block;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);aspect-ratio:1}
.feedback-detail-images-grid img{width:100%;height:100%;object-fit:cover;transition:transform var(--t-fast)}
.feedback-detail-images-grid a:hover img{transform:scale(1.05)}

/* 后台子导航 */
.feedback-subnav{display:flex;gap:0;margin-bottom:20px;border-bottom:1px solid var(--border)}
.feedback-subnav a{padding:10px 20px;font-size:14px;color:var(--text2);text-decoration:none;border-bottom:2px solid transparent;transition:color var(--t-fast),border-color var(--t-fast)}
.feedback-subnav a:hover{color:var(--primary)}
.feedback-subnav a.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}

/* 后台图片管理 */
.feedback-admin-images{display:flex;flex-wrap:wrap;gap:12px}
.feedback-admin-image-item{position:relative;width:120px;height:120px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}
.feedback-admin-image-item img{width:100%;height:100%;object-fit:cover}
.feedback-admin-image-delete{position:absolute;top:4px;right:4px;width:24px;height:24px;border:none;border-radius:50%;background:rgba(220,38,38,.85);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0;transition:background var(--t-fast)}
.feedback-admin-image-delete:hover{background:#dc2626}

/* 开关组件 */
.switch-toggle{display:inline-flex !important;align-items:center;gap:8px;cursor:pointer;user-select:none;position:relative;margin-bottom:0 !important}
.switch-toggle input[type="checkbox"]{position:absolute;opacity:0;width:0;height:0}
.switch-toggle-slider{width:40px;height:22px;background:var(--bg3);border-radius:11px;position:relative;transition:background var(--t-fast);flex-shrink:0}
.switch-toggle-slider::before{content:'';position:absolute;top:2px;left:2px;width:18px;height:18px;background:#fff;border-radius:50%;transition:transform var(--t-fast);box-shadow:0 1px 3px rgba(0,0,0,.2)}
.switch-toggle input:checked+.switch-toggle-slider{background:var(--primary)}
.switch-toggle input:checked+.switch-toggle-slider::before{transform:translateX(18px)}
.switch-toggle-text{font-size:13px;color:var(--text2)}

/* 提示框 */
.alert{padding:12px 16px;border-radius:var(--radius);margin-bottom:16px;font-size:14px}
.alert-success{background:rgba(34,197,94,.1);color:#16a34a;border:1px solid rgba(34,197,94,.2)}
.alert-error{background:rgba(239,68,68,.1);color:#dc2626;border:1px solid rgba(239,68,68,.2)}
[data-theme="dark"] .alert-success{color:#4ade80}
[data-theme="dark"] .alert-error{color:#f87171}

/* ============ 后台反馈：大屏适配 ============ */
/* 详情页双列布局：左信息 + 右答复 */
.feedback-detail-grid{display:grid;grid-template-columns:1fr;gap:0}
.feedback-detail-left,.feedback-detail-right{min-width:0}
.feedback-detail-left .table-vertical th{width:130px}
.feedback-detail-right{padding:24px}
.feedback-detail-right .feedback-admin-form{margin-top:0;padding-top:0;border-top:none}
.feedback-detail-right .form-actions{padding-top:8px}
@media (min-width:1100px){
  .feedback-detail-grid{grid-template-columns:1.25fr 1fr;align-items:start}
  .feedback-detail-left{padding:8px 4px 24px}
  .feedback-detail-right{border-left:1px solid var(--border);min-height:100%}
}
@media (max-width:1099px){
  .feedback-detail-left .table-vertical tr:last-child th,
  .feedback-detail-left .table-vertical tr:last-child td{border-bottom:none}
  .feedback-detail-right{padding-top:28px}
  .feedback-detail-right .feedback-admin-form{border-top:1px solid var(--border);padding-top:24px;margin-top:0}
}

/* 设置页：响应式网格卡片 */
.fb-settings-grid{display:grid;grid-template-columns:1fr;gap:16px;padding:20px}
.fb-setting-item{
  background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px 20px;display:flex;flex-direction:column;gap:10px
}
.fb-setting-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.fb-setting-label{font-size:14px;font-weight:700;color:var(--text)}
.fb-setting-desc{font-size:12px;color:var(--text3);line-height:1.6}
.fb-rate-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.fb-rate-row input.form-input{width:84px}
.fb-settings-actions{padding:16px 20px 20px;border-top:1px solid var(--border)}
@media (min-width:960px){
  .fb-settings-grid{grid-template-columns:repeat(2,1fr);padding:24px}
  .fb-setting-item:nth-child(3){grid-column:1 / -1}
  .fb-settings-actions{padding:20px 24px}
}
@media (min-width:1400px){
  .fb-settings-grid{grid-template-columns:repeat(3,1fr)}
  .fb-setting-item:nth-child(3){grid-column:auto}
}

/* 前台反馈内容在 reader-content 内的样式微调 */
.reader-content .feedback-section:first-of-type{margin-top:4px}
.reader-content .feedback-form .form-input,
.reader-content .feedback-form .form-textarea{max-width:640px}
.reader-content .feedback-captcha-row{max-width:360px}

/* ============ 软件销售模块 ============ */

/* 后台子导航 */
.sw-subnav{display:flex;gap:0;margin-bottom:20px;border-bottom:1px solid var(--border)}
.sw-subnav a{padding:10px 20px;font-size:14px;color:var(--text2);text-decoration:none;border-bottom:2px solid transparent;transition:color var(--t-fast),border-color var(--t-fast)}
.sw-subnav a:hover{color:var(--primary)}
.sw-subnav a.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}

/* 软件列表 - 卡密种类标签 */
.sw-type-tag{display:inline-block;padding:2px 8px;margin:2px 4px 2px 0;font-size:12px;border-radius:6px;background:var(--bg3);color:var(--text2)}
.sw-type-tag .muted{color:var(--text3)}

/* 卡密内容单元格 */
.card-key-cell{font-family:monospace;font-size:13px;word-break:break-all;max-width:300px}

/* 批量添加卡密表单 */
.sw-batch-form{padding:20px}
.sw-batch-row{display:flex;align-items:flex-start;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.sw-batch-row label{width:80px;flex-shrink:0;font-size:13px;font-weight:600;color:var(--text);padding-top:10px}
.sw-batch-row .form-input{flex:1;min-width:200px;max-width:500px}
.sw-batch-row textarea.form-input{min-height:120px}
.sw-batch-result{font-size:13px;align-self:center}

/* 编辑卡密弹窗 */
.sw-edit-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:1000;align-items:center;justify-content:center}
.sw-edit-dialog{background:var(--bg2);border-radius:var(--radius-lg);padding:24px;width:90%;max-width:500px;box-shadow:var(--shadow-xl);border:1px solid var(--border)}
.sw-edit-dialog h3{margin-bottom:16px;font-size:16px}
.sw-edit-dialog .form-input{width:100%}
.sw-edit-dialog textarea.form-input{min-height:80px;font-family:monospace;font-size:13px}
.sw-edit-actions{display:flex;gap:12px;margin-top:16px;justify-content:flex-end}

/* 订单管理 */
.sw-order-table td{vertical-align:top}
.sw-order-cards{margin-top:8px}
.sw-order-card{font-family:monospace;font-size:12px;padding:4px 8px;margin:2px 0;background:var(--bg3);border-radius:4px;word-break:break-all}

/* 支付设置 */
.sw-pay-section{margin:24px 0;padding:20px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg2)}
.sw-pay-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.sw-pay-head h3{margin:0;padding:0;border:none;font-size:15px}
.sw-field-hint{font-size:12px;color:var(--text3);font-weight:400}
.sw-toggle-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.form-hint-inline{font-size:12px;color:var(--text3)}

/* 后台菜单图标 */
.admin-menu a i{width:18px;text-align:center;flex-shrink:0;font-size:14px}

/* 支付设置大屏适配 - 每个支付方式占一整行，大屏时加宽表单 */
.sw-pay-form .sw-pay-section{margin:0 0 24px}
@media (min-width:1200px){
  .form-card.sw-pay-form{max-width:900px}
  .form-card.account-form{max-width:900px}
}
@media (min-width:1600px){
  .form-card.sw-pay-form{max-width:1040px}
  .form-card.account-form{max-width:1040px}
}

/* 本站购买按钮 */
.purchase-btn-site{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff;
  box-shadow:0 2px 8px rgba(var(--primary-rgb),.25);
}
.purchase-btn-site:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(var(--primary-rgb),.35)}

/* ============ 前台购买弹窗 ============ */
.purchase-overlay{
  display:none;position:fixed;inset:0;z-index:999;
  background:rgba(15,23,42,.55);backdrop-filter:blur(4px);
  align-items:center;justify-content:center;padding:16px;
}
.purchase-dialog{
  background:var(--bg2);border-radius:var(--radius-xl);
  width:100%;max-width:460px;max-height:90vh;overflow-y:auto;
  box-shadow:var(--shadow-xl);border:1px solid var(--border);
  animation:pModalIn .25s var(--ease-spring);
}
@keyframes pModalIn{from{transform:scale(.92);opacity:0}to{transform:scale(1);opacity:1}}

.purchase-head{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--border)}
.purchase-head h3{font-size:17px;font-weight:700;margin:0}
.purchase-close{width:32px;height:32px;border:none;border-radius:8px;background:var(--bg3);color:var(--text2);font-size:22px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background var(--t-fast)}
.purchase-close:hover{background:var(--border);color:var(--text)}

.purchase-body{padding:24px}
.purchase-field{margin-bottom:18px}
.purchase-field > label{display:block;margin-bottom:8px;font-size:13px;font-weight:600;color:var(--text)}
.purchase-input{
  width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius);
  font-size:14px;outline:none;transition:all var(--t-fast);font-family:inherit;
  background:var(--bg3);color:var(--text);
}
.purchase-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(var(--primary-rgb),.1);background:var(--bg2)}
.purchase-stock{font-size:12px;margin-left:8px}

/* 数量选择器 */
.purchase-qty-row{display:flex;align-items:center;gap:0}
.purchase-qty-btn{
  width:36px;height:38px;border:1px solid var(--border);background:var(--bg3);
  color:var(--text);font-size:18px;cursor:pointer;transition:background var(--t-fast);
}
.purchase-qty-btn:first-child{border-radius:var(--radius) 0 0 var(--radius)}
.purchase-qty-btn:last-child{border-radius:0 var(--radius) var(--radius) 0;border-left:none}
.purchase-qty-btn:first-child{border-right:none}
.purchase-qty-btn:hover{background:var(--border)}
.purchase-qty-input{width:60px;height:38px;text-align:center;border:1px solid var(--border);border-radius:0;font-size:14px;outline:none;background:var(--bg2);color:var(--text);-moz-appearance:textfield}
.purchase-qty-input::-webkit-inner-spin-button{display:none}

/* 价格显示 */
.purchase-price-row{display:flex;align-items:center;justify-content:space-between}
.purchase-price{font-size:20px;font-weight:700;color:var(--primary)}

/* 支付方式 */
.purchase-methods{display:flex;gap:12px;flex-wrap:wrap}
.purchase-method{display:flex;align-items:center;gap:6px;padding:8px 16px;border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;font-size:14px;transition:all var(--t-fast);background:var(--bg3)}
.purchase-method:hover{border-color:var(--primary)}
.purchase-method.checked{border-color:var(--primary);background:var(--primary-light);color:var(--primary-dark)}
.purchase-method input{accent-color:var(--primary);width:16px;height:16px;cursor:pointer;margin:0}

.purchase-foot{padding:16px 24px 24px;border-top:1px solid var(--border)}
.purchase-submit{width:100%;padding:12px;font-size:15px}

.purchase-loading{text-align:center;padding:60px 20px;color:var(--text3);font-size:14px}
.purchase-error{text-align:center;padding:40px 20px;color:var(--rose);font-size:14px;margin-bottom:16px}

/* 支付二维码步骤 */
.purchase-pay-body{text-align:center;padding:32px 24px}
.purchase-pay-amount{font-size:32px;font-weight:700;color:var(--text);margin-bottom:4px}
.purchase-pay-method{font-size:14px;color:var(--text2);margin-bottom:24px}
.purchase-qr{display:flex;justify-content:center;margin-bottom:16px}
.purchase-qr svg{border-radius:var(--radius);background:#fff;padding:8px}
.purchase-qr-tip{font-size:13px;color:var(--text2);margin-bottom:16px}
.purchase-qr-fallback{text-align:center;padding:20px}
.purchase-qr-fallback .btn{margin-top:12px}
.purchase-pay-wait{font-size:13px;color:var(--text3);margin:16px 0}
.purchase-pay-actions{display:flex;justify-content:center;gap:12px}

/* 支付成功步骤 */
.purchase-success-body{text-align:center;padding:32px 24px}
.purchase-success-icon{color:var(--primary);margin-bottom:16px}
.purchase-success-body h4{font-size:20px;font-weight:700;margin-bottom:8px}
.purchase-success-body .muted{font-size:13px;color:var(--text3);margin-bottom:4px}
.purchase-cards{margin:20px 0;text-align:left}
.purchase-card-key{
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;margin-bottom:8px;
  background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);
}
.purchase-card-key .card-index{
  flex-shrink:0;width:24px;height:24px;border-radius:50%;
  background:var(--primary);color:#fff;font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.purchase-card-key .card-content{
  flex:1;font-family:monospace;font-size:13px;word-break:break-all;color:var(--text);
}
.purchase-card-key .copy-card-btn{flex-shrink:0}
.purchase-success-tip{font-size:12px;color:var(--text3);margin:12px 0 20px}
.purchase-success-actions{display:flex;justify-content:center;gap:12px}

/* ============ 支付结果页 ============ */
.purchase-result{display:flex;justify-content:center;padding:40px 16px}
.purchase-result-card{
  background:var(--bg2);border-radius:var(--radius-xl);padding:40px;
  max-width:520px;width:100%;text-align:center;
  border:1px solid var(--border);box-shadow:var(--shadow-lg);
}
.purchase-result-icon{display:flex;justify-content:center;margin-bottom:16px}
.purchase-result-icon.success{color:var(--primary)}
.purchase-result-icon.pending{color:var(--orange)}
.purchase-result-card h2{font-size:24px;font-weight:700;margin-bottom:8px}
.purchase-result-card .muted{font-size:13px;color:var(--text3)}
.purchase-result-info{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:24px 0;padding:20px;background:var(--bg3);border-radius:var(--radius)}
.purchase-result-info div{display:flex;flex-direction:column;gap:4px;text-align:left}
.purchase-result-info span{font-size:12px;color:var(--text3)}
.purchase-result-info strong{font-size:14px;color:var(--text)}
.purchase-result-cards{margin:20px 0}
.purchase-result-cards h3{font-size:15px;margin-bottom:12px}
.purchase-result-cards .purchase-card-key{background:var(--bg3)}
.purchase-result-tip{font-size:12px;color:var(--text3);margin:12px 0 20px}
.purchase-result-actions{display:flex;justify-content:center;gap:12px}

[data-theme="dark"] .purchase-dialog{background:var(--bg2)}
[data-theme="dark"] .purchase-qr svg{background:#fff}

/* 移动端弹窗 */
@media(max-width:600px){
  .purchase-dialog{max-width:100%;max-height:95vh;border-radius:var(--radius-lg)}
  .purchase-body{padding:16px}
  .purchase-head{padding:16px}
  .purchase-pay-amount{font-size:26px}
  .purchase-result-card{padding:24px 20px}
  .purchase-result-info{grid-template-columns:1fr}
  .sw-batch-row label{width:100%;padding-top:0}
  .sw-batch-row .form-input{max-width:100%}
}