:root{
  --bg:#f6f7fb; --bg2:#ffffff; --fg:#111827; --fg2:#4b5563; --fg3:#8b93a3;
  --line:#e6e8ef; --line2:#eef0f6;
  --brand:#6366f1; --brand2:#8b5cf6; --brand-soft:#eef0ff;
  --ok:#10b981; --warn:#f59e0b; --err:#ef4444;
  --shadow:0 1px 2px rgba(16,24,40,.04), 0 8px 24px -8px rgba(16,24,40,.10);
  --shadow-lg:0 24px 60px -20px rgba(16,24,40,.28);
  --r:16px; --r-sm:10px;
  --safe-b:env(safe-area-inset-bottom,0px);
  --safe-t:env(safe-area-inset-top,0px);
}
html[data-theme="dark"]{
  --bg:#0f1117; --bg2:#171a23; --fg:#eef1f7; --fg2:#a8b0c0; --fg3:#6f7787;
  --line:#252a36; --line2:#1d222c;
  --brand:#818cf8; --brand2:#a78bfa; --brand-soft:#232842;
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 24px -8px rgba(0,0,0,.5);
  --shadow-lg:0 24px 60px -20px rgba(0,0,0,.7);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
/* hidden 属性必须始终生效：防止 display:grid/flex 类规则覆盖它 */
[hidden]{display:none !important}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--fg);
  font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
  padding-bottom:calc(24px + var(--safe-b));
}
h1,h2,h3,p{margin:0}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
b{font-weight:650}

/* ---------- 顶栏 ---------- */
.top{
  position:sticky;top:0;z-index:30;
  display:flex;align-items:center;gap:12px;
  padding:calc(10px + var(--safe-t)) 16px 10px;
  background:color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:11px;min-width:0}
.logo{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:linear-gradient(140deg,var(--brand),var(--brand2));
  color:#fff;font-size:20px;font-weight:700;
  display:grid;place-items:center;box-shadow:0 6px 16px -6px var(--brand);
}
.brand-txt{min-width:0}
.brand-txt h1{font-size:17px;font-weight:680;letter-spacing:-.2px;line-height:1.2}
.brand-txt p{font-size:11.5px;color:var(--fg3);line-height:1.3;white-space:nowrap}
.top-actions{margin-left:auto;display:flex;align-items:center;gap:8px}
.pill{
  font-size:11.5px;font-weight:600;padding:5px 9px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  border:1px solid color-mix(in srgb,var(--brand) 22%,transparent);white-space:nowrap;
}
.pill.small{font-size:10.5px;padding:3px 8px}
.icon-btn{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  font-size:16px;border:1px solid var(--line);background:var(--bg2);transition:.15s;
}
.icon-btn:active{transform:scale(.93)}

/* ---------- Hero ---------- */
.hero{padding:22px 18px 6px;max-width:960px;margin:0 auto;width:100%}
.hero h2{font-size:23px;font-weight:720;letter-spacing:-.5px;line-height:1.25}
.hero h2 b{background:linear-gradient(90deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{margin-top:9px;color:var(--fg2);font-size:13.5px;line-height:1.65}
.hero-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.hero-tags span{
  font-size:11.5px;color:var(--fg2);padding:4px 10px;border-radius:999px;
  background:var(--bg2);border:1px solid var(--line);
}

/* ---------- 分类 ---------- */
.chips{
  display:flex;gap:8px;overflow-x:auto;padding:16px 18px 4px;max-width:960px;margin:0 auto;width:100%;
  scrollbar-width:none;-webkit-overflow-scrolling:touch;
}
.chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;font-size:13px;font-weight:600;padding:8px 14px;border-radius:999px;
  background:var(--bg2);border:1px solid var(--line);color:var(--fg2);transition:.15s;white-space:nowrap;
}
.chip.active{background:linear-gradient(140deg,var(--brand),var(--brand2));border-color:transparent;color:#fff;box-shadow:0 6px 16px -8px var(--brand)}
.chip:active{transform:scale(.96)}

/* ---------- 卡片网格 ---------- */
.grid{
  display:grid;gap:11px;padding:12px 18px 30px;max-width:960px;margin:0 auto;width:100%;
  grid-template-columns:repeat(auto-fill,minmax(158px,1fr));
}
@media (max-width:420px){ .grid{grid-template-columns:1fr 1fr;gap:10px;padding:12px 14px 30px} }
.tool{
  position:relative;text-align:left;padding:14px 13px 13px;border-radius:var(--r);
  background:var(--bg2);border:1px solid var(--line);box-shadow:var(--shadow);
  display:flex;flex-direction:column;gap:9px;min-height:126px;
  transition:transform .15s, box-shadow .15s, border-color .15s;
}
.tool:active{transform:scale(.975)}
.tool.star{border-color:color-mix(in srgb,var(--brand) 34%,transparent)}
.tool .ico{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  font-size:19px;background:var(--brand-soft);
}
.tool .nm{font-size:14px;font-weight:650;letter-spacing:-.15px;line-height:1.3}
.tool .ds{font-size:11.5px;color:var(--fg3);line-height:1.45;flex:1}
.tool .fx{
  font-size:10.5px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);padding:3px 7px;border-radius:6px;align-self:flex-start;
  max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.tool .flag{
  position:absolute;top:9px;right:9px;font-size:9.5px;font-weight:700;
  padding:2px 6px;border-radius:6px;background:linear-gradient(140deg,var(--brand),var(--brand2));color:#fff;
}
.tool .flag.soon{background:var(--line);color:var(--fg3)}

/* ---------- 底部 ---------- */
.foot{padding:6px 18px 26px;text-align:center;color:var(--fg3);font-size:12px;line-height:1.7;max-width:960px;margin:0 auto}
.foot .tiny{font-size:11px;margin-top:5px;opacity:.85}

/* ---------- 工具面板（底部抽屉 / 桌面弹窗） ---------- */
.sheet{position:fixed;inset:0;z-index:60;display:none}
.sheet.open{display:block}
.sheet::before{
  content:"";position:absolute;inset:0;background:rgba(15,17,23,.45);
  backdrop-filter:blur(3px);animation:fade .2s ease;
}
@keyframes fade{from{opacity:0}to{opacity:1}}
.sheet-inner{
  position:absolute;left:0;right:0;bottom:0;
  background:var(--bg);border-radius:22px 22px 0 0;
  max-height:92vh;display:flex;flex-direction:column;
  box-shadow:var(--shadow-lg);animation:up .26s cubic-bezier(.32,.72,0,1);
  padding-bottom:var(--safe-b);
}
@keyframes up{from{transform:translateY(100%)}to{transform:translateY(0)}}
@media (min-width:721px){
  .sheet-inner{
    left:50%;bottom:auto;top:50%;transform:translate(-50%,-50%);
    width:min(680px,94vw);border-radius:20px;max-height:88vh;animation:pop .2s ease;
  }
  @keyframes pop{from{opacity:0;transform:translate(-50%,-48%) scale(.97)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}
}
.sheet-head{
  display:flex;align-items:flex-start;gap:12px;padding:16px 16px 12px;
  border-bottom:1px solid var(--line);flex:0 0 auto;position:relative;
}
.sheet-head::before{
  content:"";position:absolute;top:7px;left:50%;transform:translateX(-50%);
  width:38px;height:4px;border-radius:2px;background:var(--line);
}
@media (min-width:721px){ .sheet-head::before{display:none} }
.sheet-head .back{flex:0 0 34px;width:34px;height:34px;font-size:17px}
.sheet-title{min-width:0;flex:1;padding-top:2px}
.sheet-title h3{font-size:16.5px;font-weight:680;letter-spacing:-.2px}
.sheet-title p{font-size:12px;color:var(--fg3);margin-top:3px;line-height:1.45}
.sheet-body{padding:16px;overflow-y:auto;flex:1 1 auto;-webkit-overflow-scrolling:touch}
.sheet-foot{
  padding:12px 16px calc(14px);border-top:1px solid var(--line);
  display:flex;gap:10px;flex:0 0 auto;background:var(--bg);
}
.sheet-foot:empty{display:none}

/* ---------- 表单元素 ---------- */
.drop{
  border:1.5px dashed var(--line);border-radius:var(--r);padding:28px 16px;text-align:center;
  background:var(--bg2);transition:.18s;cursor:pointer;
}
.drop:active,.drop.hot{border-color:var(--brand);background:var(--brand-soft)}
.drop .di{font-size:30px;margin-bottom:8px}
.drop .dt{font-size:14px;font-weight:620}
.drop .ds{font-size:11.5px;color:var(--fg3);margin-top:5px;line-height:1.5}
.field{margin-bottom:14px}
.field>label{display:block;font-size:12.5px;font-weight:620;margin-bottom:6px;color:var(--fg2)}
.field .hint{font-size:11px;color:var(--fg3);font-weight:400;margin-left:6px}
input[type=text],input[type=number],select,textarea{
  width:100%;padding:10px 12px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:var(--bg2);color:var(--fg);font-size:14px;outline:none;transition:.15s;
  -webkit-appearance:none;appearance:none;
}
select{background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'><path d='M2 4.5L6 8.5L10 4.5' stroke='%238b93a3' stroke-width='1.6' fill='none' stroke-linecap='round'/></svg>");background-repeat:no-repeat;background-position:right 12px center;padding-right:32px}
input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 16%,transparent)}
textarea{resize:vertical;min-height:96px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;line-height:1.6}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.switch{display:flex;align-items:center;gap:10px;padding:10px 0;cursor:pointer}
.switch input{display:none}
.switch .track{
  width:40px;height:23px;border-radius:999px;background:var(--line);position:relative;transition:.2s;flex:0 0 40px;
}
.switch .track::after{
  content:"";position:absolute;top:2.5px;left:2.5px;width:18px;height:18px;border-radius:50%;
  background:#fff;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.25);
}
.switch input:checked+.track{background:var(--brand)}
.switch input:checked+.track::after{transform:translateX(17px)}
.switch .lb{font-size:13.5px;font-weight:550}
.switch .lb small{display:block;font-size:11px;color:var(--fg3);font-weight:400;margin-top:2px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:11px 18px;border-radius:var(--r-sm);font-size:14px;font-weight:620;
  background:var(--bg2);border:1px solid var(--line);transition:.15s;
}
.btn:active{transform:scale(.97)}
.btn.primary{background:linear-gradient(140deg,var(--brand),var(--brand2));border-color:transparent;color:#fff;box-shadow:0 8px 20px -10px var(--brand)}
.btn.ghost{background:transparent}
.btn.small{padding:7px 12px;font-size:12.5px;border-radius:8px}
.btn.block{width:100%}
.btn[disabled]{opacity:.45;pointer-events:none}
.btn.warn{color:var(--err);border-color:color-mix(in srgb,var(--err) 30%,transparent)}

/* ---------- 文件列表 ---------- */
.list{display:flex;flex-direction:column;gap:8px;margin-top:12px}
.item{
  display:flex;align-items:center;gap:10px;padding:9px 11px;border-radius:var(--r-sm);
  background:var(--bg2);border:1px solid var(--line);
}
.item .thumb{
  width:40px;height:40px;flex:0 0 40px;border-radius:8px;object-fit:cover;
  background:var(--line2);display:grid;place-items:center;font-size:17px;overflow:hidden;
}
.item .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.item .meta{min-width:0;flex:1}
.item .meta b{display:block;font-size:12.8px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.item .meta span{font-size:11px;color:var(--fg3)}
.item .no{font-size:11px;color:var(--fg3);font-weight:650;min-width:18px;text-align:center}
.item .acts{display:flex;gap:4px}
.item .acts button{
  width:28px;height:28px;border-radius:7px;display:grid;place-items:center;font-size:13px;
  border:1px solid var(--line);background:var(--bg);
}
.item .acts button:active{transform:scale(.9)}
.item .acts button:disabled{opacity:.3}

/* ---------- 结果 ---------- */
.result{
  margin-top:14px;padding:13px;border-radius:var(--r-sm);
  background:var(--brand-soft);border:1px solid color-mix(in srgb,var(--brand) 24%,transparent);
}
.result .rt{font-size:13px;font-weight:650;display:flex;align-items:center;gap:7px}
.result .rs{font-size:11.5px;color:var(--fg2);margin-top:5px;line-height:1.5}
.preview{margin-top:11px;border-radius:10px;overflow:hidden;border:1px solid var(--line);background:#fff;max-height:340px;overflow-y:auto}
.preview img,.preview canvas{display:block;width:100%;height:auto}
.preview pre{margin:0;padding:12px;font-size:11.5px;line-height:1.65;white-space:pre-wrap;word-break:break-word;color:#111;background:#fff;max-height:320px;overflow:auto}
html[data-theme="dark"] .preview pre{color:#e5e7eb;background:#111827}
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(78px,1fr));gap:7px;margin-top:11px}
.thumbs img{width:100%;border-radius:7px;border:1px solid var(--line);display:block}
.stat{margin-top:10px;font-size:11.5px;color:var(--fg3);text-align:center}

/* ---------- Toast ---------- */
.toasts{position:fixed;left:50%;bottom:calc(24px + var(--safe-b));transform:translateX(-50%);z-index:99;display:flex;flex-direction:column;gap:7px;align-items:center;pointer-events:none;width:calc(100% - 32px);max-width:420px}
.toast{
  padding:10px 15px;border-radius:11px;font-size:13px;font-weight:550;
  background:#111827;color:#fff;box-shadow:var(--shadow-lg);animation:tin .22s ease;
  max-width:100%;word-break:break-word;
}
@keyframes tin{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.toast.ok{background:var(--ok)} .toast.err{background:var(--err)} .toast.warn{background:var(--warn)}

/* ---------- Busy ---------- */
.busy{position:fixed;inset:0;z-index:80;background:rgba(15,17,23,.5);backdrop-filter:blur(4px);display:grid;place-items:center;padding:24px}
.busy-box{background:var(--bg2);border-radius:var(--r);padding:26px 24px;text-align:center;min-width:210px;box-shadow:var(--shadow-lg)}
.busy-box p{font-size:13.5px;font-weight:600;margin-top:14px}
.spin{width:34px;height:34px;margin:0 auto;border:3px solid var(--line);border-top-color:var(--brand);border-radius:50%;animation:sp .8s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.bar{height:5px;border-radius:3px;background:var(--line);overflow:hidden;margin-top:13px}
.bar i{display:block;height:100%;width:0;border-radius:3px;background:linear-gradient(90deg,var(--brand),var(--brand2));transition:width .22s}
.busy-box .btn{margin-top:14px}
.tip{
  font-size:11.5px;line-height:1.6;color:var(--fg2);padding:10px 12px;border-radius:var(--r-sm);
  background:var(--bg2);border:1px solid var(--line);margin-bottom:14px;
}
.tip b{color:var(--fg)}
.tip.warn{border-color:color-mix(in srgb,var(--warn) 40%,transparent);background:color-mix(in srgb,var(--warn) 9%,var(--bg2))}
.hidden{display:none !important}