/* ==========================================================
   数控知识库 · 界面样式
   ========================================================== */
:root{
  --bg:#0a0d12;
  --bg2:#0e131a;
  --panel:#121822;
  --panel-2:#161d29;
  --line:rgba(255,255,255,.075);
  --line-2:rgba(255,255,255,.14);
  --text:#e7eef6;
  --dim:#8d9aae;
  --dim-2:#647083;
  --cyan:#22d3ee;
  --cyan-dim:rgba(34,211,238,.12);
  --amber:#f5a524;
  --red:#fb7185;
  --green:#34d399;
  --radius:14px;
  --mono:"Cascadia Mono","JetBrains Mono",Consolas,"Courier New",monospace;
  --sans:"Segoe UI","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);
  font-size:14.5px;line-height:1.6;-webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(900px 500px at 78% -10%, rgba(34,211,238,.10), transparent 60%),
    radial-gradient(700px 400px at 10% 0%, rgba(245,165,36,.06), transparent 60%);
  background-attachment:fixed;
}
::selection{background:rgba(34,211,238,.28)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:#26303d;border-radius:20px;border:2px solid var(--bg)}
::-webkit-scrollbar-thumb:hover{background:#33404f}
::-webkit-scrollbar-track{background:transparent}
svg{fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
a{color:var(--cyan);text-decoration:none}
a:hover{text-decoration:underline}
code{font-family:var(--mono);font-size:.9em}

/* ---------------- 布局 ---------------- */
.app{display:flex;height:100vh;overflow:hidden}

.sidebar{
  width:252px;flex:0 0 252px;background:linear-gradient(180deg,#0d1219,#0a0e14);
  border-right:1px solid var(--line);display:flex;flex-direction:column;padding:18px 14px 14px;
}
.brand{display:flex;align-items:center;gap:11px;padding:4px 6px 18px}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;display:grid;place-items:center;color:#04121a;
  background:linear-gradient(140deg,var(--cyan),#0ea5b7);box-shadow:0 6px 18px -6px rgba(34,211,238,.7);
}
.brand-mark svg{stroke:#04202a;stroke-width:1.9}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:15.5px;letter-spacing:.5px}
.brand-text span{font-size:9.5px;color:var(--dim-2);letter-spacing:1.6px;font-family:var(--mono)}

.nav{display:flex;flex-direction:column;gap:3px}
.nav-item{
  display:flex;align-items:center;gap:11px;padding:10px 12px;border:0;border-radius:10px;
  background:transparent;color:var(--dim);font:inherit;font-size:14px;cursor:pointer;text-align:left;
  transition:.16s;position:relative;
}
.nav-item svg{width:18px;height:18px;flex:0 0 18px}
.nav-item em{
  margin-left:auto;font-style:normal;font-family:var(--mono);font-size:11px;color:var(--dim-2);
  background:rgba(255,255,255,.05);border-radius:20px;padding:1px 8px;
}
.nav-item:hover{background:rgba(255,255,255,.045);color:var(--text)}
.nav-item.active{background:var(--cyan-dim);color:var(--cyan)}
.nav-item.active em{background:rgba(34,211,238,.16);color:var(--cyan)}
.nav-item.active::before{
  content:"";position:absolute;left:-14px;top:9px;bottom:9px;width:3px;border-radius:0 3px 3px 0;
  background:var(--cyan);box-shadow:0 0 12px var(--cyan);
}

.side-cats{margin-top:22px;padding-top:16px;border-top:1px solid var(--line);overflow:auto;flex:1}
.side-cats h6{
  margin:0 0 8px 8px;font-size:10.5px;letter-spacing:1.4px;color:var(--dim-2);
  font-weight:600;font-family:var(--mono);text-transform:uppercase;
}
.side-cat{
  display:flex;align-items:center;gap:9px;width:100%;padding:7px 8px;border:0;border-radius:8px;
  background:transparent;color:var(--dim);font:inherit;font-size:13px;cursor:pointer;text-align:left;
}
.side-cat:hover{background:rgba(255,255,255,.045);color:var(--text)}
.side-cat i{
  width:7px;height:7px;border-radius:50%;flex:0 0 7px;background:currentColor;
  box-shadow:0 0 8px currentColor;
}
.side-cat span{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.side-cat b{font-family:var(--mono);font-size:11px;color:var(--dim-2);font-weight:500}

.side-foot{padding-top:14px;border-top:1px solid var(--line)}
.storage-label{display:flex;justify-content:space-between;font-size:11.5px;color:var(--dim-2);margin-bottom:6px}
.storage-label b{color:var(--dim);font-family:var(--mono);font-weight:500}
.bar{height:5px;background:rgba(255,255,255,.07);border-radius:20px;overflow:hidden}
.bar i{display:block;height:100%;width:0;border-radius:20px;background:linear-gradient(90deg,var(--cyan),var(--amber));transition:width .4s}
.side-hint{margin-top:9px;font-size:10.5px;color:var(--dim-2);line-height:1.5}
.side-hint code{color:var(--dim)}

/* ---------------- 主区 ---------------- */
.main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{
  height:64px;flex:0 0 64px;display:flex;align-items:center;gap:14px;padding:0 24px;
  border-bottom:1px solid var(--line);background:rgba(10,13,18,.72);backdrop-filter:blur(12px);z-index:30;
}
.searchbox{position:relative;flex:1;max-width:520px;display:flex;align-items:center}
.searchbox>svg{
  position:absolute;left:12px;color:var(--dim-2);stroke-width:2;pointer-events:none;
}
.searchbox input{
  width:100%;height:38px;padding:0 14px 0 36px;border-radius:10px;border:1px solid var(--line);
  background:rgba(255,255,255,.035);color:var(--text);font:inherit;font-size:13.5px;outline:none;transition:.18s;
}
.searchbox input::placeholder{color:var(--dim-2)}
.searchbox input:focus{border-color:rgba(34,211,238,.55);background:rgba(34,211,238,.05);box-shadow:0 0 0 3px rgba(34,211,238,.08)}
.search-results{
  position:absolute;top:46px;left:0;right:0;max-height:66vh;overflow:auto;display:none;
  background:#0f151e;border:1px solid var(--line-2);border-radius:12px;padding:8px;
  box-shadow:0 24px 60px -20px rgba(0,0,0,.9);z-index:60;
}
.search-results.show{display:block}
.sr-group{font-size:10.5px;letter-spacing:1.2px;color:var(--dim-2);padding:8px 10px 5px;font-family:var(--mono)}
.sr-item{
  display:block;width:100%;text-align:left;padding:8px 10px;border:0;border-radius:8px;background:transparent;
  color:var(--text);font:inherit;font-size:13.5px;cursor:pointer;
}
.sr-item:hover{background:rgba(34,211,238,.1)}
.sr-item span{display:block;font-size:11.5px;color:var(--dim-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sr-empty{padding:16px;text-align:center;color:var(--dim-2);font-size:13px}
.topbar-actions{display:flex;gap:9px;margin-left:auto}

/* ---------------- 按钮 ---------------- */
.btn{
  display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 14px;border-radius:10px;
  border:1px solid var(--line-2);background:rgba(255,255,255,.04);color:var(--text);
  font:inherit;font-size:13.5px;cursor:pointer;transition:.16s;white-space:nowrap;
}
.btn svg{width:16px;height:16px}
.btn:hover{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.24)}
.btn.primary{
  background:linear-gradient(140deg,var(--cyan),#0ba7bd);border-color:transparent;color:#04141a;font-weight:600;
  box-shadow:0 8px 22px -10px rgba(34,211,238,.85);
}
.btn.primary:hover{filter:brightness(1.1)}
.btn.ghost{background:transparent}
.btn.lg{height:44px;padding:0 20px;font-size:14.5px;border-radius:12px}
.btn.danger{color:var(--red);border-color:rgba(251,113,133,.35)}
.btn.danger:hover{background:rgba(251,113,133,.12)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.link{
  border:0;background:transparent;color:var(--cyan);font:inherit;font-size:12.5px;cursor:pointer;
  float:right;padding:2px 0;
}
.link:hover{text-decoration:underline}

/* ---------------- 滚动视图 ---------------- */
.scroll{flex:1;overflow-y:auto;padding:26px 30px 70px;scroll-behavior:smooth}
.view{max-width:1220px;margin:0 auto;animation:fade .28s ease}
.view.hidden{display:none}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.view-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px}
.view-head h1{margin:0 0 4px;font-size:26px;letter-spacing:.3px}
.view-head p{margin:0;color:var(--dim);font-size:13.5px}
.sec-title{
  font-size:14.5px;margin:34px 0 14px;letter-spacing:.4px;display:flex;align-items:center;gap:10px;
}
.sec-title::before{content:"";width:3px;height:15px;border-radius:2px;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.sec-title .link{float:none;margin-left:auto}

/* ---------------- Hero ---------------- */
.hero{
  position:relative;overflow:hidden;border-radius:20px;border:1px solid var(--line);
  background:linear-gradient(150deg,rgba(34,211,238,.10),rgba(20,26,36,.9) 42%,rgba(245,165,36,.07));
  padding:34px 36px 28px;margin-bottom:8px;
}
.hero-grid{
  position:absolute;inset:0;opacity:.5;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:34px 34px;
  mask-image:radial-gradient(ellipse 80% 70% at 70% 30%,#000,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 70% 30%,#000,transparent 75%);
}
.hero-inner{position:relative;max-width:640px}
.hero-tag{
  display:inline-block;font-size:11px;letter-spacing:2px;font-family:var(--mono);color:var(--cyan);
  border:1px solid rgba(34,211,238,.35);background:rgba(34,211,238,.08);border-radius:20px;padding:3px 12px;
}
.hero h1{font-size:33px;line-height:1.28;margin:16px 0 12px;letter-spacing:.4px}
.hero p{color:var(--dim);font-size:14px;margin:0 0 22px;max-width:560px}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap}
.hero-stats{
  position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:30px;
  border-top:1px solid var(--line);padding-top:18px;
}
.stat b{display:block;font-size:23px;font-family:var(--mono);letter-spacing:-.5px;color:var(--text)}
.stat span{font-size:11.5px;color:var(--dim-2)}

/* ---------------- 分类卡片 ---------------- */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:12px}
.cat-card{
  display:flex;align-items:center;gap:12px;padding:14px 15px;border-radius:13px;cursor:pointer;
  border:1px solid var(--line);background:var(--panel);color:var(--text);font:inherit;text-align:left;transition:.18s;
}
.cat-card:hover{border-color:var(--line-2);transform:translateY(-2px);background:var(--panel-2)}
.cat-ico{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;display:grid;place-items:center;font-size:16px;
  background:rgba(255,255,255,.05);
}
.cat-card b{display:block;font-size:13.5px;font-weight:600}
.cat-card span{font-size:11.5px;color:var(--dim-2)}

/* ---------------- 列表 ---------------- */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.mini-list{display:flex;flex-direction:column;gap:8px}
.mini-item{
  display:flex;align-items:center;gap:11px;padding:11px 13px;border-radius:11px;cursor:pointer;
  border:1px solid var(--line);background:var(--panel);text-align:left;color:inherit;font:inherit;width:100%;transition:.16s;
}
.mini-item:hover{border-color:var(--line-2);background:var(--panel-2)}
.mini-item .mi-ico{font-size:15px;opacity:.85;flex:0 0 auto}
.mini-item b{font-size:13.5px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mini-item span{font-size:11.5px;color:var(--dim-2);flex:0 0 auto;margin-left:auto;font-family:var(--mono)}
.mini-item .mi-body{min-width:0;flex:1}
.empty{
  padding:22px;border:1px dashed var(--line-2);border-radius:12px;text-align:center;color:var(--dim-2);font-size:13px;
}
.quick-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px}
.quick{
  padding:14px 15px;border-radius:12px;border:1px solid var(--line);background:var(--panel);
  color:var(--text);font:inherit;text-align:left;cursor:pointer;transition:.16s;
}
.quick:hover{border-color:rgba(34,211,238,.45);background:rgba(34,211,238,.06)}
.quick b{display:block;font-size:13.5px;margin-bottom:2px}
.quick span{font-size:11.5px;color:var(--dim-2)}

/* ---------------- 工具栏 / 筛选 ---------------- */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.chip{
  height:30px;padding:0 13px;border-radius:20px;border:1px solid var(--line-2);background:rgba(255,255,255,.03);
  color:var(--dim);font:inherit;font-size:12.5px;cursor:pointer;transition:.16s;display:inline-flex;align-items:center;gap:6px;
}
.chip:hover{color:var(--text);border-color:var(--line-2);background:rgba(255,255,255,.07)}
.chip.active{background:rgba(34,211,238,.14);border-color:rgba(34,211,238,.5);color:var(--cyan)}
.chip em{font-style:normal;font-family:var(--mono);font-size:10.5px;opacity:.75}
.toolbar{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap;align-items:center}
.input{
  height:36px;padding:0 13px;border-radius:10px;border:1px solid var(--line);
  background:rgba(255,255,255,.035);color:var(--text);font:inherit;font-size:13.5px;outline:none;transition:.16s;
}
.input::placeholder{color:var(--dim-2)}
.input:focus{border-color:rgba(34,211,238,.5);box-shadow:0 0 0 3px rgba(34,211,238,.08)}
#kbSearch,#noteSearch,#fileSearch{flex:1;min-width:220px}
.select{cursor:pointer;padding-right:8px}
.select option{background:#121822}

/* ---------------- 文章卡片 ---------------- */
.article-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:13px}
.article-card{
  position:relative;padding:17px 18px 15px;border-radius:14px;border:1px solid var(--line);background:var(--panel);
  cursor:pointer;transition:.18s;overflow:hidden;
}
.article-card::after{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--cat,var(--cyan));opacity:.55;transition:.18s;
}
.article-card:hover{border-color:var(--line-2);transform:translateY(-2px);background:var(--panel-2);box-shadow:0 18px 40px -26px #000}
.article-card:hover::after{width:3px;opacity:1;box-shadow:0 0 14px var(--cat,var(--cyan))}
.ac-top{display:flex;align-items:center;gap:8px;margin-bottom:9px}
.ac-cat{
  font-size:10.5px;letter-spacing:.6px;padding:2px 9px;border-radius:20px;font-family:var(--mono);
  color:var(--cat,var(--cyan));background:color-mix(in srgb,var(--cat,var(--cyan)) 14%,transparent);
  border:1px solid color-mix(in srgb,var(--cat,var(--cyan)) 32%,transparent);
}
.ac-kind{margin-left:auto;font-size:10.5px;color:var(--dim-2);font-family:var(--mono)}
.article-card h3{margin:0 0 7px;font-size:15px;line-height:1.45;font-weight:600;letter-spacing:.2px}
.article-card p{
  margin:0;font-size:12.5px;color:var(--dim-2);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.ac-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:11px}
.ac-tags i{font-style:normal;font-size:10.5px;color:var(--dim-2);background:rgba(255,255,255,.05);border-radius:5px;padding:1px 7px}

/* ---------------- 上传 ---------------- */
.dropzone{
  display:flex;flex-direction:column;align-items:center;gap:7px;padding:32px;border-radius:16px;
  border:1.5px dashed rgba(34,211,238,.3);background:rgba(34,211,238,.035);cursor:pointer;transition:.2s;
  color:var(--dim);text-align:center;margin-bottom:16px;
}
.dropzone svg{color:var(--cyan);opacity:.85}
.dropzone b{color:var(--text);font-size:14px;font-weight:600}
.dropzone span{font-size:12px;color:var(--dim-2);max-width:560px}
.dropzone:hover,.dropzone.drag{border-color:var(--cyan);background:rgba(34,211,238,.09);transform:scale(1.004)}
.upload-list{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.upload-item{
  display:flex;align-items:center;gap:11px;padding:10px 13px;border-radius:10px;
  border:1px solid var(--line);background:var(--panel);font-size:12.5px;
}
.upload-item .ui-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.upload-item .ui-bar{width:150px;height:5px;border-radius:20px;background:rgba(255,255,255,.08);overflow:hidden;flex:0 0 150px}
.upload-item .ui-bar i{display:block;height:100%;width:0;background:var(--cyan);transition:width .15s}
.upload-item.done .ui-bar i{background:var(--green)}
.upload-item.error .ui-bar i{background:var(--red)}
.upload-item .ui-pct{font-family:var(--mono);font-size:11px;color:var(--dim-2);width:42px;text-align:right}

/* ---------------- 文件卡片 ---------------- */
.file-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:13px}
.file-card{
  border-radius:13px;border:1px solid var(--line);background:var(--panel);overflow:hidden;
  cursor:pointer;transition:.18s;display:flex;flex-direction:column;
}
.file-card:hover{border-color:var(--line-2);transform:translateY(-2px);box-shadow:0 18px 40px -26px #000}
.fc-thumb{
  height:132px;background:#0b0f15;display:grid;place-items:center;overflow:hidden;position:relative;
  border-bottom:1px solid var(--line);
}
.fc-thumb img{width:100%;height:100%;object-fit:cover;transition:.3s}
.file-card:hover .fc-thumb img{transform:scale(1.05)}
.fc-thumb video{width:100%;height:100%;object-fit:cover}
.fc-ext{font-family:var(--mono);font-size:20px;letter-spacing:1px;color:var(--dim-2);text-transform:uppercase}
.fc-emoji{font-size:32px;opacity:.75}
.fc-body{padding:11px 13px 12px;display:flex;flex-direction:column;gap:5px;min-width:0}
.fc-name{font-size:13px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.fc-meta{font-size:11px;color:var(--dim-2);font-family:var(--mono);display:flex;gap:8px}
.fc-tags{display:flex;gap:5px;flex-wrap:wrap}
.fc-tags i{font-style:normal;font-size:10px;color:var(--cyan);background:rgba(34,211,238,.1);border-radius:4px;padding:0 6px}
.fc-actions{
  position:absolute;top:8px;right:8px;display:flex;gap:6px;opacity:0;transition:.18s;
}
.file-card:hover .fc-actions{opacity:1}
.icon-btn{
  width:28px;height:28px;border-radius:8px;border:1px solid rgba(255,255,255,.18);background:rgba(8,11,16,.82);
  color:var(--text);display:grid;place-items:center;cursor:pointer;font-size:13px;backdrop-filter:blur(6px);
}
.icon-btn:hover{background:rgba(34,211,238,.85);color:#04141a;border-color:transparent}
.icon-btn.del:hover{background:rgba(251,113,133,.9);color:#1a0407}
.play-badge{
  position:absolute;inset:0;display:grid;place-items:center;background:rgba(0,0,0,.28);
}
.play-badge svg{width:42px;height:42px;color:#fff;filter:drop-shadow(0 2px 10px rgba(0,0,0,.8))}

/* ---------------- 笔记 ---------------- */
.note-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:13px}
.note-card{
  padding:15px 16px;border-radius:13px;border:1px solid var(--line);background:var(--panel);
  cursor:pointer;transition:.18s;display:flex;flex-direction:column;gap:8px;position:relative;
}
.note-card:hover{border-color:var(--line-2);transform:translateY(-2px);background:var(--panel-2)}
.note-card.pinned{border-color:rgba(245,165,36,.4);background:linear-gradient(160deg,rgba(245,165,36,.07),var(--panel) 60%)}
.nc-head{display:flex;align-items:center;gap:8px}
.nc-head b{font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}
.nc-pin{font-size:11px;color:var(--amber)}
.nc-body{
  font-size:12.5px;color:var(--dim);line-height:1.65;white-space:pre-wrap;
  display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden;
}
.nc-foot{display:flex;align-items:center;gap:8px;margin-top:auto;font-size:10.5px;color:var(--dim-2);font-family:var(--mono)}
.nc-foot .nc-tags{display:flex;gap:5px;flex-wrap:wrap}
.nc-foot .nc-tags i{font-style:normal;color:var(--amber);background:rgba(245,165,36,.1);border-radius:4px;padding:0 6px}

/* ---------------- 模态框 ---------------- */
.modal-root{position:fixed;inset:0;display:none;z-index:100}
.modal-root.show{display:block}
.modal-mask{position:absolute;inset:0;background:rgba(4,6,10,.72);backdrop-filter:blur(6px);animation:fade .2s}
.modal{
  position:relative;margin:4vh auto;width:min(920px,94vw);max-height:92vh;display:flex;flex-direction:column;
  background:#0f141c;border:1px solid var(--line-2);border-radius:16px;overflow:hidden;
  box-shadow:0 40px 100px -30px #000;animation:pop .24s cubic-bezier(.2,.9,.3,1.1);
}
@keyframes pop{from{opacity:0;transform:translateY(16px) scale(.985)}to{opacity:1;transform:none}}
.modal.wide{width:min(1180px,96vw)}
.modal.slim{width:min(560px,94vw)}
.modal-head{
  display:flex;align-items:center;gap:12px;padding:15px 20px;border-bottom:1px solid var(--line);
  background:rgba(255,255,255,.02);flex:0 0 auto;
}
.modal-head h3{margin:0;font-size:15px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.modal-head .mh-sub{font-size:11.5px;color:var(--dim-2);font-family:var(--mono)}
.modal-head .spacer{flex:1}
.modal-body{padding:20px 24px 26px;overflow:auto;flex:1}
.modal-foot{
  display:flex;gap:10px;justify-content:flex-end;padding:13px 20px;border-top:1px solid var(--line);
  background:rgba(255,255,255,.02);flex:0 0 auto;
}
.close-btn{
  width:30px;height:30px;border-radius:8px;border:1px solid var(--line-2);background:transparent;color:var(--dim);
  cursor:pointer;font-size:16px;line-height:1;display:grid;place-items:center;
}
.close-btn:hover{background:rgba(251,113,133,.16);color:var(--red);border-color:rgba(251,113,133,.4)}

/* 阅读器 */
.reader-layout{display:grid;grid-template-columns:1fr 210px;gap:26px}
.reader-toc{position:sticky;top:0;align-self:start;font-size:12.5px;border-left:1px solid var(--line);padding-left:14px}
.reader-toc h6{margin:0 0 9px;font-size:10.5px;letter-spacing:1.3px;color:var(--dim-2);font-family:var(--mono)}
.reader-toc a{display:block;color:var(--dim);padding:3px 0;line-height:1.45;border-left:0}
.reader-toc a:hover{color:var(--cyan);text-decoration:none}
.reader-toc a.lv3{padding-left:10px;font-size:11.5px;color:var(--dim-2)}

/* Markdown 排版 */
.md{font-size:14.5px;line-height:1.85;color:#dbe4ee;word-wrap:break-word}
.md>*:first-child{margin-top:0}
.md h1{font-size:23px;margin:0 0 18px;letter-spacing:.3px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.md h2{font-size:18px;margin:30px 0 12px;padding-left:11px;border-left:3px solid var(--cyan);line-height:1.4}
.md h3{font-size:15.5px;margin:24px 0 9px;color:#cfdae6}
.md h4{font-size:14px;margin:18px 0 7px;color:var(--dim)}
.md p{margin:0 0 12px}
.md ul,.md ol{margin:0 0 14px;padding-left:22px}
.md li{margin:4px 0}
.md li::marker{color:var(--cyan)}
.md strong{color:#fff;font-weight:600}
.md em{color:var(--amber);font-style:normal}
.md code{
  font-family:var(--mono);font-size:12.5px;background:rgba(34,211,238,.1);color:#7ee7f7;
  padding:1.5px 5px;border-radius:5px;border:1px solid rgba(34,211,238,.16);
}
.md pre{
  margin:0 0 16px;padding:14px 16px;border-radius:11px;background:#080c11;border:1px solid var(--line);
  overflow:auto;font-size:12.5px;line-height:1.7;position:relative;
}
.md pre code{background:none;border:0;padding:0;color:#a7f3d0;font-size:12.5px}
.md blockquote{
  margin:0 0 14px;padding:10px 16px;border-left:3px solid var(--amber);
  background:rgba(245,165,36,.07);border-radius:0 8px 8px 0;color:#e8d4ac;
}
.md blockquote p:last-child{margin:0}
.md table{width:100%;border-collapse:collapse;margin:0 0 16px;font-size:13px;display:block;overflow-x:auto}
.md th{
  text-align:left;padding:9px 12px;background:rgba(34,211,238,.09);color:#9deaf7;
  border:1px solid var(--line);font-weight:600;white-space:nowrap;
}
.md td{padding:8px 12px;border:1px solid var(--line);color:#c6d2e0}
.md tr:nth-child(even) td{background:rgba(255,255,255,.018)}
.md hr{border:0;border-top:1px solid var(--line);margin:24px 0}
.md img{max-width:100%;border-radius:10px;border:1px solid var(--line)}
.md a{border-bottom:1px dashed rgba(34,211,238,.4)}

/* 表单 */
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label{font-size:12px;color:var(--dim);letter-spacing:.3px}
.field .input,.field textarea,.field select{width:100%}
.field textarea{
  padding:12px 14px;border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.035);
  color:var(--text);font:inherit;font-size:13.5px;line-height:1.7;outline:none;resize:vertical;min-height:120px;
  font-family:var(--mono);
}
.field textarea:focus{border-color:rgba(34,211,238,.5);box-shadow:0 0 0 3px rgba(34,211,238,.08)}
.field input.input{height:38px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.hint{font-size:11.5px;color:var(--dim-2)}
.tag-input-wrap{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.tag-pill{
  display:inline-flex;align-items:center;gap:5px;font-size:11.5px;padding:2px 8px;border-radius:20px;
  background:rgba(34,211,238,.12);color:var(--cyan);border:1px solid rgba(34,211,238,.25);
}
.tag-pill b{cursor:pointer;opacity:.7;font-weight:400}
.tag-pill b:hover{opacity:1;color:var(--red)}

/* 预览 */
.preview-media{display:grid;place-items:center;background:#060a0e;border-radius:12px;overflow:hidden;min-height:240px}
.preview-media img{max-width:100%;max-height:72vh;display:block}
.preview-media video{max-width:100%;max-height:72vh;width:100%;background:#000}
.preview-media audio{width:100%;padding:30px}
.preview-media iframe{width:100%;height:74vh;border:0;background:#fff}
.preview-text{
  background:#080c11;border:1px solid var(--line);border-radius:11px;padding:16px;
  font-family:var(--mono);font-size:12.5px;line-height:1.75;max-height:70vh;overflow:auto;white-space:pre-wrap;color:#b9c7d6;
}
.meta-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.meta-list span{
  font-size:11.5px;color:var(--dim);background:rgba(255,255,255,.05);border-radius:7px;padding:3px 10px;
  font-family:var(--mono);
}

/* Toast */
.toast-root{position:fixed;bottom:26px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;gap:8px;z-index:200;align-items:center}
.toast{
  padding:10px 18px;border-radius:11px;background:#151c26;border:1px solid var(--line-2);color:var(--text);
  font-size:13px;box-shadow:0 18px 40px -18px #000;animation:toastin .25s ease;display:flex;align-items:center;gap:9px;
}
.toast.ok{border-color:rgba(52,211,153,.45)}
.toast.err{border-color:rgba(251,113,133,.45)}
@keyframes toastin{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* 拖拽全屏提示 */
.drop-overlay{
  position:fixed;inset:0;z-index:150;display:none;place-items:center;
  background:rgba(6,12,18,.82);backdrop-filter:blur(4px);border:3px dashed rgba(34,211,238,.5);
}
.drop-overlay.show{display:grid}
.drop-overlay div{
  font-size:20px;color:var(--cyan);letter-spacing:2px;padding:28px 46px;border-radius:18px;
  background:rgba(34,211,238,.08);border:1px solid rgba(34,211,238,.35);
}

/* ---------------- 响应式 ---------------- */
@media (max-width:1080px){
  .two-col{grid-template-columns:1fr}
  .reader-layout{grid-template-columns:1fr}
  .reader-toc{display:none}
}
@media (max-width:820px){
  .sidebar{width:64px;flex:0 0 64px;padding:14px 9px}
  .brand-text,.nav-item em,.side-cats,.side-hint,.storage-label span{display:none}
  .nav-item{justify-content:center;padding:11px 0}
  .nav-item.active::before{left:-9px}
  .brand{justify-content:center;padding-bottom:14px}
  .storage{padding-top:6px}
  .scroll{padding:18px 16px 70px}
  .hero{padding:24px 20px}
  .hero h1{font-size:24px}
  .hero-stats{grid-template-columns:1fr 1fr;gap:14px}
  .topbar{padding:0 14px;gap:8px}
  .topbar-actions .btn span{display:none}
  .btn{padding:0 11px}
  .field-row{grid-template-columns:1fr}
  .modal{margin:2vh auto;max-height:96vh}
  .modal-body{padding:16px}
}