/* ============================================================
   京鸽AI · 全站样式(科技渐变风 / 玻璃拟态)
   ============================================================ */
:root{
  --bg:#f2f4fd;
  --ink:#1b2136;
  --muted:#5c657e;
  --brand:#4f6bff;
  --brand2:#8b5cf6;
  --accent:#22c1dc;
  --gold:#ffd666;
  --grad:linear-gradient(135deg,#4f6bff 0%,#8b5cf6 100%);
  --grad-soft:linear-gradient(135deg,rgba(79,107,255,.12),rgba(139,92,246,.12));
  --card:rgba(255,255,255,.72);
  --card-solid:#ffffff;
  --line:rgba(79,107,255,.16);
  --shadow-s:0 2px 8px rgba(63,81,181,.10);
  --shadow:0 10px 30px rgba(63,81,181,.14),0 2px 8px rgba(63,81,181,.08);
  --shadow-l:0 24px 60px rgba(63,81,181,.20);
  --radius:18px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,Consolas,"Cascadia Code",Menlo,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);color:var(--ink);background:var(--bg);
  min-height:100vh;line-height:1.6;-webkit-font-smoothing:antialiased;
  padding-top:64px;
}
a{color:var(--brand);text-decoration:none}
img{max-width:100%}
button{font-family:inherit}
::selection{background:rgba(79,107,255,.25)}

/* ---------- 背景光斑 ---------- */
.bg-blobs{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.bg-blobs i{
  position:absolute;border-radius:50%;filter:blur(80px);opacity:.5;
  animation:blobFloat 18s ease-in-out infinite alternate;
}
.bg-blobs i:nth-child(1){width:520px;height:520px;left:-120px;top:-140px;background:radial-gradient(circle,#8fb0ff,transparent 65%)}
.bg-blobs i:nth-child(2){width:460px;height:460px;right:-100px;top:16%;background:radial-gradient(circle,#c9b2ff,transparent 65%);animation-delay:-6s}
.bg-blobs i:nth-child(3){width:560px;height:560px;left:30%;bottom:-220px;background:radial-gradient(circle,#9fe8ff,transparent 65%);animation-delay:-12s}
@keyframes blobFloat{
  from{transform:translate(0,0) scale(1)}
  to{transform:translate(50px,36px) scale(1.12)}
}

/* ---------- 顶部导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;height:64px;z-index:100;
  display:flex;align-items:center;gap:18px;padding:0 22px;
  background:rgba(255,255,255,.72);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav.scrolled{box-shadow:var(--shadow-s)}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.logo{width:38px;height:38px;display:grid;place-items:center;filter:drop-shadow(0 4px 10px rgba(79,107,255,.35))}
.logo svg{width:38px;height:38px;display:block}
.brand-name{font-size:20px;font-weight:800;letter-spacing:.5px;color:var(--ink)}
.brand-name em{
  font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}
.nav-links{display:flex;gap:4px;flex:1;justify-content:center}
.nav-links a{
  padding:8px 16px;border-radius:12px;color:var(--muted);font-weight:600;font-size:15px;
  transition:all .22s ease;position:relative;white-space:nowrap;
}
.nav-links a:hover{color:var(--brand);background:var(--grad-soft)}
.nav-links a.active{color:var(--brand);background:var(--grad-soft)}
.nav-links a.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:18px;height:3px;border-radius:3px;background:var(--grad);
}
.nav-right{display:flex;align-items:center;gap:10px;flex:none}
.nav-burger{display:none;background:none;border:0;width:40px;height:40px;cursor:pointer;
  flex-direction:column;justify-content:center;align-items:center;gap:5px}
.nav-burger i{width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.nav-drawer{
  position:fixed;top:64px;left:0;right:0;z-index:99;display:none;
  background:rgba(255,255,255,.92);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);padding:10px 18px 16px;
}
.nav-drawer.open{display:block;animation:fadeUp .25s ease}
.nav-drawer a{display:block;padding:12px 8px;font-weight:600;color:var(--ink);border-radius:10px}
.nav-drawer a.active{color:var(--brand);background:var(--grad-soft)}
.nav-drawer .drawer-extra{margin-top:8px;display:flex;gap:10px;flex-wrap:wrap}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:9px 18px;border-radius:12px;border:1px solid var(--line);
  background:var(--card-solid);color:var(--ink);font-weight:600;font-size:14px;
  cursor:pointer;transition:all .22s ease;white-space:nowrap;user-select:none;
}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-s);border-color:rgba(79,107,255,.4)}
.btn:active{transform:translateY(0)}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--grad);color:#fff;border:0;box-shadow:0 6px 18px rgba(79,107,255,.35)}
.btn-primary:hover{box-shadow:0 10px 24px rgba(79,107,255,.45);border:0}
.btn-ghost{background:transparent}
.btn-danger{background:#fff1f3;color:#e5484d;border-color:rgba(229,72,77,.25)}
.btn-danger:hover{background:#ffe5e8;box-shadow:0 6px 16px rgba(229,72,77,.25)}
.btn-sm{padding:6px 12px;font-size:13px;border-radius:10px}
.icon-btn{
  width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:9px;border:0;background:transparent;color:var(--muted);cursor:pointer;transition:.2s;
}
.icon-btn:hover{background:var(--grad-soft);color:var(--brand)}
.icon-btn svg{width:16px;height:16px}
.icon-btn.danger:hover{background:#ffe5e8;color:#e5484d}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}

/* ---------- 主区域 ---------- */
.view{max-width:1180px;margin:0 auto;padding:28px 22px 60px;min-height:calc(100vh - 64px - 260px)}

/* ---------- 首页 ---------- */
.hero{text-align:center;padding:52px 10px 40px;animation:fadeUp .6s ease}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:999px;
  background:var(--grad-soft);border:1px solid var(--line);color:var(--brand);
  font-weight:700;font-size:13px;letter-spacing:1px;
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--grad);animation:pulse 2s infinite}
.hero h1{
  margin:18px 0 12px;font-size:clamp(30px,5vw,46px);font-weight:900;line-height:1.25;letter-spacing:1px;
}
.hero h1 .grad{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.hero p{color:var(--muted);font-size:16px;max-width:640px;margin:0 auto 26px}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

.cards{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:12px 0 30px;
}
.card{
  position:relative;display:flex;flex-direction:column;gap:14px;
  padding:26px 22px 22px;border-radius:var(--radius);overflow:hidden;
  background:var(--card);border:1px solid var(--line);color:var(--ink);
  box-shadow:var(--shadow);
  transition:transform .3s cubic-bezier(.2,.8,.3,1.2),box-shadow .3s ease,border-color .3s ease;
  animation:fadeUp .6s ease backwards;animation-delay:calc(var(--i,0)*.12s);
}
.card::before{
  content:"";position:absolute;inset:0;opacity:0;transition:opacity .3s ease;
  background:linear-gradient(160deg,rgba(79,107,255,.10),rgba(139,92,246,.10) 60%,transparent);
  pointer-events:none;
}
.card:hover{transform:translateY(-10px);box-shadow:var(--shadow-l);border-color:rgba(79,107,255,.38)}
.card:hover::before{opacity:1}
.card-ico{
  width:56px;height:56px;border-radius:16px;display:grid;place-items:center;color:#fff;
  background:var(--grad);box-shadow:0 8px 20px rgba(79,107,255,.35);
  transition:transform .3s cubic-bezier(.2,.8,.3,1.4);
}
.card:hover .card-ico{transform:scale(1.1) rotate(-6deg)}
.card-ico svg{width:28px;height:28px}
.card h3{font-size:19px;font-weight:800}
.card p{color:var(--muted);font-size:14px;flex:1}
.card .go{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:700;font-size:14px;
}
.card .go svg{width:16px;height:16px;transition:transform .25s}
.card:hover .go svg{transform:translateX(5px)}
.card .tagline{
  position:absolute;top:14px;right:-34px;transform:rotate(45deg);
  background:var(--grad);color:#fff;font-size:11px;font-weight:700;
  padding:4px 40px;letter-spacing:2px;box-shadow:var(--shadow-s);
}

/* ---------- 区块通用 ---------- */
.section-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:8px 0 16px;flex-wrap:wrap}
.section-head h2{font-size:22px;font-weight:800;display:flex;align-items:center;gap:10px}
.section-head h2 svg{width:22px;height:22px;color:var(--brand)}
.section-head .sub{color:var(--muted);font-size:13px}

/* ---------- 页脚 ---------- */
.footer{
  border-top:1px solid var(--line);background:rgba(255,255,255,.6);
  backdrop-filter:blur(12px);padding:30px 22px 26px;margin-top:20px;
}
.footer-inner{max-width:1180px;margin:0 auto}
.footer-row{display:flex;align-items:flex-start;gap:28px;justify-content:center;flex-wrap:wrap}
.qr-slots{display:flex;gap:22px;flex-wrap:wrap}
.qr-slot{display:flex;flex-direction:column;align-items:center;gap:8px;width:104px}
.qr-img{
  width:96px;height:96px;border-radius:14px;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;overflow:hidden;cursor:pointer;position:relative;
  box-shadow:var(--shadow-s);transition:transform .25s ease,box-shadow .25s ease;
}
.qr-img:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.qr-img img{width:100%;height:100%;object-fit:cover}
.qr-img .qr-ph{color:#aab2c8;text-align:center;padding:6px}
.qr-img .qr-ph svg{width:26px;height:26px;opacity:.7}
.qr-img .qr-ph span{display:block;font-size:10px;margin-top:3px}
.qr-slot .qr-label{font-size:13px;font-weight:700;color:var(--muted);display:flex;align-items:center;gap:5px}
.qr-slot .qr-label svg{width:14px;height:14px}
.qr-ops{position:absolute;inset:auto 0 0 0;display:none;gap:2px;justify-content:center;padding:4px;background:rgba(20,24,40,.55)}
.qr-img:hover .qr-ops{display:flex}
.qr-ops .icon-btn{color:#fff;width:26px;height:26px}
.site-url{
  display:flex;flex-direction:column;gap:8px;align-items:center;justify-content:center;
  padding:12px 18px;border-radius:14px;background:var(--grad-soft);border:1px dashed rgba(79,107,255,.4);
  min-width:230px;
}
.site-url .u{font-weight:700;color:var(--brand);font-size:14px;word-break:break-all;text-align:center}
.site-url .tip{font-size:11px;color:var(--muted)}
.site-url input{width:100%}
.footer-meta{text-align:center;color:var(--muted);font-size:13px;margin-top:22px}
.footer-quote{
  text-align:center;margin-top:10px;font-size:14px;color:var(--brand);
  font-weight:600;min-height:24px;transition:opacity .6s ease;
}
.footer-quote.fading{opacity:0}
.footer-quote .q-mark{opacity:.55;margin:0 6px}

/* ---------- 文件管理器 ---------- */
.fm{display:grid;grid-template-columns:250px 1fr;gap:18px;align-items:start}
.fm-side{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;box-shadow:var(--shadow-s);position:sticky;top:80px;
}
.fm-side h4{font-size:13px;color:var(--muted);font-weight:700;letter-spacing:1px;margin:2px 4px 10px;display:flex;align-items:center;gap:6px}
.tree{max-height:60vh;overflow:auto;font-size:14px}
.tree-item{display:flex;align-items:center;gap:6px;padding:7px 8px;border-radius:9px;cursor:pointer;color:var(--ink);transition:.18s;user-select:none}
.tree-item:hover{background:var(--grad-soft)}
.tree-item.active{background:var(--grad-soft);color:var(--brand);font-weight:700}
.tree-item .tw{width:16px;height:16px;flex:none;display:grid;place-items:center;color:var(--muted);transition:transform .2s}
.tree-item .tw svg{width:12px;height:12px}
.tree-item .tw.open{transform:rotate(90deg)}
.tree-item svg.fi{width:16px;height:16px;color:var(--gold)}
.tree-item .name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tree-kids{margin-left:16px;border-left:1px dashed var(--line);padding-left:4px;display:none}
.tree-kids.open{display:block}
.fm-main{min-width:0}
.fm-toolbar{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:12px 14px;box-shadow:var(--shadow-s);margin-bottom:12px;
}
.fm-toolbar .spacer{flex:1}
.mode-chip{
  display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;
  font-size:12px;font-weight:700;background:var(--grad-soft);color:var(--brand);
  border:1px solid var(--line);cursor:pointer;transition:.2s;
}
.mode-chip:hover{box-shadow:var(--shadow-s)}
.mode-chip .dot{width:7px;height:7px;border-radius:50%;background:var(--grad)}
.mode-chip.local .dot{background:#f5a623}
.search-box{position:relative}
.search-box input{padding-left:30px;width:180px}
.search-box svg{position:absolute;left:9px;top:50%;transform:translateY(-50%);width:15px;height:15px;color:var(--muted)}
.fm-crumb{
  display:flex;align-items:center;gap:4px;flex-wrap:wrap;padding:4px 6px 12px;
  font-size:14px;color:var(--muted);
}
.fm-crumb a{cursor:pointer;color:var(--muted);padding:3px 7px;border-radius:8px;font-weight:600}
.fm-crumb a:hover{background:var(--grad-soft);color:var(--brand)}
.fm-crumb a.active{color:var(--brand)}
.fm-crumb .sep{opacity:.5}
.fm-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:14px;
}
.fm-item{
  position:relative;background:var(--card-solid);border:1px solid var(--line);border-radius:14px;
  padding:14px;display:flex;flex-direction:column;gap:8px;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s;
  box-shadow:0 1px 4px rgba(63,81,181,.06);animation:fadeUp .4s ease backwards;
}
.fm-item:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(79,107,255,.35)}
.fm-item .f-ico{
  width:42px;height:42px;border-radius:11px;display:grid;place-items:center;
  background:var(--grad-soft);color:var(--brand);
}
.fm-item .f-ico svg{width:22px;height:22px}
.fm-item.folder .f-ico{color:#eab308;background:#fdf6e3}
.fm-item .f-name{font-weight:700;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.fm-item .f-meta{font-size:12px;color:var(--muted);display:flex;gap:8px}
.fm-item .f-acts{
  position:absolute;top:8px;right:8px;display:flex;gap:2px;opacity:0;transition:.2s;
  background:rgba(255,255,255,.85);border-radius:9px;padding:2px;backdrop-filter:blur(4px);
}
.fm-item:hover .f-acts{opacity:1}
.fm-empty{
  text-align:center;color:var(--muted);padding:60px 0;border:1px dashed var(--line);
  border-radius:var(--radius);background:rgba(255,255,255,.4);
}
.fm-empty svg{width:44px;height:44px;opacity:.4;margin-bottom:10px}
.drop-tip{
  position:fixed;inset:0;z-index:200;display:none;place-items:center;
  background:rgba(79,107,255,.12);backdrop-filter:blur(3px);
}
.drop-tip.show{display:grid}
.drop-tip .inner{
  padding:30px 60px;border-radius:20px;border:2px dashed var(--brand);
  background:rgba(255,255,255,.9);font-weight:800;font-size:18px;color:var(--brand);
  animation:pulse 1.6s infinite;
}
.fm-opts{position:relative}
.fm-menu{
  position:absolute;top:110%;right:0;z-index:30;min-width:150px;
  background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);
  padding:6px;display:none;
}
.fm-menu.open{display:block;animation:fadeUp .18s ease}
.fm-menu button{
  display:flex;align-items:center;gap:8px;width:100%;padding:8px 10px;border:0;background:none;
  border-radius:8px;cursor:pointer;font-size:14px;color:var(--ink);text-align:left;
}
.fm-menu button:hover{background:var(--grad-soft);color:var(--brand)}
.fm-menu button.danger{color:#e5484d}
.fm-menu button.danger:hover{background:#ffe5e8;color:#e5484d}
.fm-menu button svg{width:15px;height:15px}

/* ---------- 弹窗 ---------- */
.modal-overlay{
  position:fixed;inset:0;z-index:300;background:rgba(23,27,45,.45);
  backdrop-filter:blur(6px);display:grid;place-items:center;padding:20px;
  animation:fadeIn .2s ease;
}
.modal{
  width:min(680px,94vw);max-height:88vh;display:flex;flex-direction:column;
  background:rgba(255,255,255,.97);backdrop-filter:blur(20px);
  border:1px solid rgba(255,255,255,.6);border-radius:20px;box-shadow:var(--shadow-l);
  animation:popIn .28s cubic-bezier(.2,.9,.3,1.2);overflow:hidden;
}
.modal.sm{width:min(440px,94vw)}
.modal.lg{width:min(900px,96vw)}
.modal-head{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:16px 20px;border-bottom:1px solid var(--line);
}
.modal-head h3{font-size:17px;font-weight:800;display:flex;align-items:center;gap:8px}
.modal-head h3 svg{width:19px;height:19px;color:var(--brand)}
.modal-body{padding:20px;overflow:auto;flex:1}
.modal-foot{display:flex;justify-content:flex-end;gap:10px;padding:14px 20px;border-top:1px solid var(--line)}
.modal-foot .left{margin-right:auto}

/* ---------- 表单 ---------- */
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:700;color:var(--muted);margin-bottom:6px}
.field .hint{font-size:12px;color:var(--muted);margin-top:5px}
input[type=text],input[type=tel],input[type=password],input[type=url],select,textarea{
  width:100%;padding:10px 13px;border-radius:11px;border:1px solid var(--line);
  background:#fff;font-size:14px;font-family:inherit;color:var(--ink);outline:none;
  transition:border .2s,box-shadow .2s;
}
input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(79,107,255,.15)}
textarea{resize:vertical;min-height:90px}
.form-row{display:flex;gap:10px}
.form-row>*{flex:1}
.radio-cards{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.radio-card{
  border:1px solid var(--line);border-radius:13px;padding:12px;cursor:pointer;transition:.2s;background:#fff;
}
.radio-card.active{border-color:var(--brand);background:var(--grad-soft);box-shadow:0 0 0 3px rgba(79,107,255,.12)}
.radio-card b{display:block;font-size:14px}
.radio-card span{font-size:12px;color:var(--muted)}

/* ---------- Toast ---------- */
.toast-root{position:fixed;top:76px;left:50%;transform:translateX(-50%);z-index:500;display:flex;flex-direction:column;gap:10px;align-items:center}
.toast{
  display:flex;align-items:center;gap:8px;padding:10px 20px;border-radius:12px;
  background:rgba(27,33,54,.92);color:#fff;font-size:14px;font-weight:600;
  box-shadow:var(--shadow-l);animation:toastIn .3s cubic-bezier(.2,.9,.3,1.2);
  max-width:88vw;
}
.toast.success{background:linear-gradient(135deg,#16a34a,#0d9488)}
.toast.error{background:linear-gradient(135deg,#e5484d,#c026d3)}
.toast svg{width:16px;height:16px;flex:none}
.toast.out{animation:toastOut .3s ease forwards}

/* ---------- 预览弹层 ---------- */
.preview-media{text-align:center;max-height:74vh;overflow:auto;border-radius:10px}
.preview-media img{display:block;margin:0 auto;max-width:100%;border-radius:10px;cursor:zoom-in;box-shadow:var(--shadow-s)}
.preview-media img.zoomed{max-width:none;width:auto;cursor:zoom-out}
.preview-media video{aspect-ratio:1.618}
.preview-media video,.preview-media audio{width:100%;border-radius:10px;background:#000}
.md-view{font-size:15px;line-height:1.8;word-break:break-word}
.md-view h1,.md-view h2,.md-view h3{margin:1em 0 .5em;font-weight:800;line-height:1.4}
.md-view h1{font-size:1.6em;border-bottom:2px solid var(--line);padding-bottom:.3em}
.md-view h2{font-size:1.35em}
.md-view h3{font-size:1.15em}
.md-view p{margin:.6em 0}
.md-view ul,.md-view ol{margin:.6em 0 .6em 1.6em}
.md-view blockquote{border-left:4px solid var(--brand);background:var(--grad-soft);padding:10px 14px;border-radius:0 10px 10px 0;margin:.8em 0;color:#3d4666}
.md-view code{font-family:var(--mono);background:rgba(79,107,255,.1);color:#4f46b8;padding:2px 6px;border-radius:6px;font-size:.9em}
.md-view pre{background:#141a30;color:#dbe2ff;padding:16px;border-radius:12px;overflow:auto;margin:.8em 0;font-size:13px;line-height:1.7}
.md-view pre code{background:none;color:inherit;padding:0}
.md-view table{border-collapse:collapse;margin:.8em 0;width:100%}
.md-view th,.md-view td{border:1px solid var(--line);padding:7px 12px;text-align:left;font-size:14px}
.md-view th{background:var(--grad-soft)}
.md-view hr{border:0;border-top:1px dashed var(--line);margin:1.2em 0}
.md-view a{border-bottom:1px dashed var(--brand)}
.md-view img{border-radius:10px}
.code-view{background:#141a30;color:#dbe2ff;border-radius:12px;padding:16px;overflow:auto;font-family:var(--mono);font-size:13px;line-height:1.7}
.text-view{white-space:pre-wrap;word-break:break-word;font-size:14.5px;line-height:1.95;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 22px}
.code-view .ln{color:#4b5578;user-select:none;display:inline-block;width:2.4em;text-align:right;margin-right:14px}
.tok-kw{color:#c792ea}.tok-str{color:#a5e08c}.tok-num{color:#f7a76c}.tok-com{color:#5d6b96;font-style:italic}.tok-fn{color:#82d2ff}
.doc-pages img{display:block;margin:0 auto 14px;border-radius:8px;box-shadow:var(--shadow)}
.preview-note{font-size:12px;color:var(--muted);margin-top:10px;text-align:center}
/* 全屏 · 影院视觉:深藏青底 + 主题色光晕 */
.modal-body:fullscreen{
  background:radial-gradient(circle at 18% 12%, rgba(79,107,255,.30), transparent 42%),
             radial-gradient(circle at 82% 88%, rgba(139,92,246,.26), transparent 46%),
             #0b0f22;
  padding:30px;display:block;box-sizing:border-box;overflow:hidden;position:relative;
}
.modal-body:fullscreen > iframe{
  display:block;width:calc(100vw - 60px) !important;height:calc(100vh - 60px) !important;
  border:2px solid rgba(255,255,255,.25);border-radius:14px;background:#fff;
  box-shadow:0 24px 70px rgba(4,7,22,.65);
}
.modal-body:fullscreen .preview-media{
  width:100%;height:100%;display:grid;place-items:center;overflow:hidden;
  max-height:none;border-radius:14px;background:#000;
  border:2px solid rgba(255,255,255,.22);box-shadow:0 24px 70px rgba(4,7,22,.6);position:relative;
}
.modal-body:fullscreen .preview-media video{
  width:auto;height:auto;max-width:calc(100vw - 90px);max-height:calc(100vh - 90px);border-radius:10px;
}
.modal-body:fullscreen .preview-note{color:rgba(255,255,255,.6);margin:12px 0 0}
.modal-body:fullscreen .text-view,.modal-body:fullscreen .md-view,.modal-body:fullscreen .code-view{
  width:min(1100px,calc(100vw - 60px));height:calc(100vh - 60px);overflow:auto;margin:0 auto;
  background:rgba(11,15,34,.85);border:1px solid rgba(255,255,255,.24);color:#dbe2ff;padding:30px 36px;border-radius:14px;
  box-shadow:0 24px 70px rgba(4,7,22,.6);
}
/* 智能缩放画布(图片):滚轮/双指/拖动/双击 */
.zoom-stage{position:relative;overflow:hidden;width:100%;height:min(72vh,640px);background:#0b0f22;border-radius:10px}
.zoom-stage img{position:absolute;top:0;left:0;transform-origin:0 0;user-select:none;-webkit-user-drag:none}
.zoom-hint{display:none}
.modal-body:fullscreen .zoom-stage{
  width:calc(100vw - 60px);height:calc(100vh - 60px);
  border:2px solid rgba(255,255,255,.22);border-radius:14px;
  box-shadow:0 24px 70px rgba(4,7,22,.65);
}
.modal-body:fullscreen .zoom-hint{
  display:block;position:absolute;bottom:14px;left:0;right:0;z-index:3;
  text-align:center;color:rgba(255,255,255,.55);font-size:12px;pointer-events:none;
}

/* ---------- 公开区橱窗(未登录首页) ---------- */
.showcase{display:flex;flex-direction:column;gap:26px;margin:6px 0 24px}
.sc-sec{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow-s)}
.sc-title{font-weight:800;font-size:16px;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.sc-title svg{width:18px;height:18px;color:var(--brand)}
.sc-badge{margin-left:auto;font-size:11px;font-weight:700;color:var(--brand);background:var(--grad-soft);border:1px solid var(--line);border-radius:999px;padding:3px 10px}
.sc-videobox{background:#0b0f22;border-radius:12px;overflow:hidden}
.sc-videobox video{display:block;width:100%;aspect-ratio:16/9;background:#000}
.sc-thumbs{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.sc-thumb{display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:13px;font-weight:600;color:var(--muted);transition:.2s;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sc-thumb svg{width:14px;height:14px;flex:none}
.sc-thumb:hover{color:var(--brand);border-color:rgba(79,107,255,.4)}
.sc-thumb.active{background:var(--grad);color:#fff;border-color:transparent}
.sc-imgc{position:relative;border-radius:12px;overflow:hidden;background:#0b0f22}
.sc-imgc img{display:block;width:100%;aspect-ratio:16/7;object-fit:cover;cursor:zoom-in}
.sc-arrow{position:absolute;top:50%;transform:translateY(-50%);width:38px;height:38px;border-radius:50%;border:0;background:rgba(15,20,40,.55);color:#fff;font-size:18px;cursor:pointer;display:grid;place-items:center;transition:.2s}
.sc-arrow:hover{background:rgba(15,20,40,.85)}
.sc-arrow.prev{left:10px}.sc-arrow.next{right:10px}
.sc-dots{position:absolute;bottom:10px;left:0;right:0;display:flex;gap:6px;justify-content:center}
.sc-dots span{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.45);cursor:pointer;transition:.2s}
.sc-dots span.on{background:#fff;width:18px;border-radius:4px}
.sc-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.sc-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;cursor:pointer;transition:.2s;box-shadow:0 1px 4px rgba(63,81,181,.06)}
.sc-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(79,107,255,.35)}
.sc-card .t{font-weight:800;font-size:14px;margin-bottom:6px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sc-card .d{font-size:12.5px;color:var(--muted)}
.member-cta{margin:4px 0 24px;padding:20px 26px;border-radius:var(--radius);background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;box-shadow:var(--shadow)}
.member-cta b{font-size:17px}
.member-cta p{font-size:13px;opacity:.92;margin:3px 0 0}
.member-cta .btn{background:#fff;color:var(--brand);border:0}
.member-cta .btn:hover{box-shadow:0 8px 20px rgba(0,0,0,.18)}

/* ---------- 登录 ---------- */
.tab-bar{display:flex;gap:6px;background:var(--grad-soft);padding:5px;border-radius:12px;margin-bottom:18px}
.tab-bar button{
  flex:1;padding:8px;border:0;background:none;border-radius:9px;font-weight:700;font-size:13px;
  color:var(--muted);cursor:pointer;transition:.2s;
}
.tab-bar button.active{background:#fff;color:var(--brand);box-shadow:var(--shadow-s)}
.slider-wrap{user-select:none}
.slider-canvas{border-radius:12px;display:block;width:100%;box-shadow:inset 0 0 0 1px var(--line)}
.slider-track{
  margin-top:10px;position:relative;height:42px;border-radius:11px;background:var(--grad-soft);
  border:1px solid var(--line);overflow:hidden;
}
.slider-fill{position:absolute;inset:0;width:0;background:linear-gradient(90deg,rgba(79,107,255,.25),rgba(139,92,246,.25))}
.slider-handle{
  position:absolute;top:3px;left:3px;width:34px;height:34px;border-radius:9px;background:#fff;
  box-shadow:var(--shadow-s);display:grid;place-items:center;cursor:grab;color:var(--brand);
  transition:background .2s;
}
.slider-handle:active{cursor:grabbing}
.slider-handle svg{width:16px;height:16px}
.slider-track.ok .slider-handle{background:#16a34a;color:#fff}
.slider-track .slider-tip{
  position:absolute;inset:0;display:grid;place-items:center;font-size:12px;color:var(--muted);
  pointer-events:none;font-weight:600;
}
.slider-piece{position:absolute;top:0;pointer-events:none;filter:drop-shadow(0 4px 8px rgba(0,0,0,.3))}
.shake{animation:shake .4s ease}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-7px)}75%{transform:translateX(7px)}}
.demo-note{
  font-size:12px;background:#fff7e8;border:1px dashed #f0c36d;color:#a06a00;
  border-radius:10px;padding:8px 12px;margin-top:4px;
}
.code-row{display:flex;gap:10px}
.code-row input{flex:1}
.code-row .btn{flex:none}

/* ---------- 直播页 ---------- */
.live-grid{display:grid;grid-template-columns:1fr 340px;gap:18px;align-items:start}
.live-player-card{
  grid-column:1;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.player-wrap{position:relative;background:#0b0f22;aspect-ratio:16/9}
.player-wrap iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.player-guide{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;color:#aab; text-align:center;padding:20px;
}
.player-guide svg{width:52px;height:52px;opacity:.5}
.danmaku-layer{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.danmaku{
  position:absolute;white-space:nowrap;color:#fff;font-weight:700;font-size:15px;
  text-shadow:0 1px 4px rgba(0,0,0,.8);animation:dmMove linear forwards;
}
@keyframes dmMove{from{transform:translateX(100vw)}to{transform:translateX(-110%)}}
.player-bar{display:flex;align-items:center;gap:10px;padding:12px 16px;flex-wrap:wrap}
.live-badge{
  display:inline-flex;align-items:center;gap:7px;background:#fee2e2;color:#dc2626;
  font-weight:800;font-size:12px;padding:5px 12px;border-radius:999px;letter-spacing:1px;
}
.live-badge .dot{width:8px;height:8px;border-radius:50%;background:#dc2626;animation:pulse 1.4s infinite}
.side-col{display:flex;flex-direction:column;gap:18px}
.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-s);overflow:hidden;
}
.panel-head{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:12px 16px;border-bottom:1px solid var(--line);font-weight:800;font-size:14px;
}
.panel-head svg{width:16px;height:16px;color:var(--brand);margin-right:6px}
.panel-head .title{display:flex;align-items:center}
.panel-body{padding:14px 16px;max-height:330px;overflow:auto}
.studio-video{width:100%;aspect-ratio:16/9;background:#0b0f22;border-radius:10px;object-fit:contain}
.studio-btns{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.studio-note{font-size:12px;color:var(--muted);margin-top:10px}
.chat-item{margin-bottom:10px;font-size:14px;word-break:break-word}
.chat-item .who{color:var(--brand);font-weight:700;margin-right:6px}
.chat-item.self .who{color:#0d9488}
.chat-empty,.notice-empty{color:var(--muted);font-size:13px;text-align:center;padding:18px 0}
.notice-item{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:11px;
  background:#fff;border:1px solid var(--line);margin-bottom:8px;
}
.notice-item .n-date{
  flex:none;font-size:11px;font-weight:800;color:#fff;background:var(--grad);
  border-radius:8px;padding:5px 8px;text-align:center;line-height:1.3;
}
.notice-item .n-title{font-weight:700;font-size:14px}
.notice-item .n-sub{font-size:12px;color:var(--muted)}
.notice-item .grow{flex:1;min-width:0}
.members{display:flex;flex-wrap:wrap;gap:10px}
.member{
  display:flex;align-items:center;gap:8px;padding:7px 13px 7px 7px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:13px;font-weight:600;
}
.avatar{
  width:26px;height:26px;border-radius:50%;background:var(--grad);color:#fff;
  display:grid;place-items:center;font-size:12px;font-weight:800;flex:none;
}

/* ---------- 关于页 ---------- */
.about-wrap{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:18px}
.about-hero{
  display:flex;gap:22px;align-items:center;padding:28px;border-radius:var(--radius);
  background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);flex-wrap:wrap;
}
.about-avatar{
  width:92px;height:92px;border-radius:28px;background:var(--grad);color:#fff;
  display:grid;place-items:center;font-size:38px;font-weight:900;flex:none;
  box-shadow:0 12px 30px rgba(79,107,255,.4);
}
.about-hero h2{font-size:24px;font-weight:900}
.about-hero .role{color:var(--brand);font-weight:700;margin:2px 0 8px}
.about-hero p{color:var(--muted);font-size:14px}
.panel-block{padding:22px;border-radius:var(--radius);background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow-s)}
.panel-block h3{font-size:16px;font-weight:800;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.panel-block h3 svg{width:17px;height:17px;color:var(--brand)}
.chips{display:flex;flex-wrap:wrap;gap:9px}
.chip{
  padding:7px 15px;border-radius:999px;background:var(--grad-soft);border:1px solid var(--line);
  font-size:13px;font-weight:700;color:var(--brand);
}
.timeline{position:relative;padding-left:22px}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:linear-gradient(#4f6bff,#8b5cf6);border-radius:2px;opacity:.4}
.tl-item{position:relative;margin-bottom:16px}
.tl-item::before{
  content:"";position:absolute;left:-21px;top:7px;width:10px;height:10px;border-radius:50%;
  background:var(--grad);box-shadow:0 0 0 3px rgba(79,107,255,.2);
}
.tl-item .t-year{font-size:12px;font-weight:800;color:var(--brand)}
.tl-item .t-title{font-weight:800;font-size:15px}
.tl-item .t-desc{font-size:13px;color:var(--muted)}
.contacts{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px}
.contact-item{
  display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:12px;
  background:#fff;border:1px solid var(--line);font-size:14px;
}
.contact-item .k{font-weight:800;color:var(--brand)}
.contact-item .v{color:var(--muted);word-break:break-all}

/* ---------- 二维码弹层 ---------- */
.qr-box{display:flex;flex-direction:column;align-items:center;gap:14px;padding:8px 0}
.qr-box canvas{border:8px solid #fff;border-radius:14px;box-shadow:var(--shadow)}
.link-row{display:flex;gap:8px}
.link-row input{flex:1;font-family:var(--mono);font-size:12.5px}

/* ---------- 通用动画 ---------- */
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes popIn{from{opacity:0;transform:scale(.92) translateY(12px)}to{opacity:1;transform:scale(1) translateY(0)}}
@keyframes toastIn{from{opacity:0;transform:translateY(-14px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}
@keyframes toastOut{to{opacity:0;transform:translateY(-12px) scale(.95)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.45}}
@keyframes spin{to{transform:rotate(360deg)}}
.spin{animation:spin 1s linear infinite}
.fade-in{animation:fadeUp .5s ease}

/* ---------- 管理员可见性 ---------- */
body:not(.is-admin) .admin-only{display:none!important}

/* ---------- 响应式 ---------- */
@media (max-width:1020px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .live-grid{grid-template-columns:1fr}
}
@media (max-width:860px){
  .nav-links{display:none}
  .nav-burger{display:flex}
  .nav-right .btn span{display:none}
  .fm{grid-template-columns:1fr}
  .fm-side{position:static}
  .tree{max-height:220px}
}
@media (max-width:560px){
  .cards{grid-template-columns:1fr}
  .card{aspect-ratio:auto;min-height:150px;flex-direction:row;align-items:center}
  .card p{display:none}
  .fm-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}
  .footer-row{flex-direction:column;align-items:center}
  .view{padding:18px 14px 50px}
}