/* ==========================================================================
   tool.ly1314.com · 设计系统
   浅色玻璃质感 + 靛蓝主色，与 ly1314.com 博客同源
   ========================================================================== */

:root{
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;

  --bg:#f5f6fb;
  --bg-grad:radial-gradient(1200px 600px at 12% -8%, rgba(79,110,247,.10), transparent 60%),
            radial-gradient(900px 500px at 92% 2%, rgba(124,92,255,.08), transparent 60%);
  --card:#ffffff;
  --card-soft:#fbfcff;
  --ink:#15171e;
  --ink-2:#4b5162;
  --ink-3:#878da0;
  --line:#e5e8f0;
  --line-soft:#eef0f7;

  --brand:#4f6ef7;
  --brand-2:#7c5cff;
  --brand-ink:#3c56d6;
  --brand-soft:rgba(79,110,247,.09);
  --brand-ring:rgba(79,110,247,.22);

  --ok:#0f9d58;
  --ok-soft:rgba(15,157,88,.10);
  --warn:#c2760a;
  --warn-soft:rgba(194,118,10,.10);
  --err:#e11d48;
  --err-soft:rgba(225,29,72,.09);

  --r-xl:22px;
  --r-lg:16px;
  --r:12px;
  --r-sm:9px;

  --sh-1:0 1px 2px rgba(17,20,30,.04), 0 6px 16px rgba(17,20,30,.045);
  --sh-2:0 2px 6px rgba(17,20,30,.05), 0 18px 42px rgba(17,20,30,.09);
  --sh-brand:0 10px 26px rgba(79,110,247,.26);

  --topbar-h:60px;
  --maxw:1280px;
}

[data-theme="dark"]{
  --bg:#0d0f14;
  --bg-grad:radial-gradient(1200px 600px at 12% -8%, rgba(79,110,247,.16), transparent 60%),
            radial-gradient(900px 500px at 92% 2%, rgba(124,92,255,.13), transparent 60%);
  --card:#151922;
  --card-soft:#1a1f2a;
  --ink:#e9ecf4;
  --ink-2:#a8b0c2;
  --ink-3:#6f7789;
  --line:#242a37;
  --line-soft:#1d222d;
  --brand:#6b86ff;
  --brand-2:#9d82ff;
  --brand-ink:#8fa2ff;
  --brand-soft:rgba(107,134,255,.14);
  --brand-ring:rgba(107,134,255,.30);
  --ok:#34d399; --ok-soft:rgba(52,211,153,.12);
  --warn:#fbbf24; --warn-soft:rgba(251,191,36,.12);
  --err:#fb7185; --err-soft:rgba(251,113,133,.12);
  --sh-1:0 1px 2px rgba(0,0,0,.5), 0 6px 16px rgba(0,0,0,.35);
  --sh-2:0 2px 6px rgba(0,0,0,.45), 0 20px 46px rgba(0,0,0,.55);
  --sh-brand:0 10px 26px rgba(79,110,247,.35);
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:80px}
body{
  font-family:var(--font);color:var(--ink);line-height:1.68;
  background:var(--bg);background-image:var(--bg-grad);background-attachment:fixed;
  -webkit-font-smoothing:antialiased;min-height:100vh;
  display:flex;flex-direction:column;
}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
img,svg,canvas{display:block;max-width:100%}
::selection{background:rgba(79,110,247,.2)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ============================ 顶栏 ============================ */
.topbar{
  position:sticky;top:0;z-index:60;height:var(--topbar-h);
  background:color-mix(in srgb, var(--bg) 78%, transparent);
  -webkit-backdrop-filter:saturate(180%) blur(18px);
  backdrop-filter:saturate(180%) blur(18px);
  border-bottom:1px solid color-mix(in srgb, var(--line) 80%, transparent);
}
.topbar-in{height:100%;display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:var(--sh-brand);color:#fff;
}
.brand-mark svg{width:19px;height:19px}
.brand-txt{font-weight:800;font-size:16.5px;letter-spacing:.2px;line-height:1.15}
.brand-txt small{display:block;font-size:9.5px;font-weight:600;letter-spacing:1.6px;color:var(--ink-3);text-transform:uppercase}

.topnav{display:flex;align-items:center;gap:4px;margin-left:14px}
.topnav a{padding:7px 12px;border-radius:9px;font-size:14px;font-weight:500;color:var(--ink-2);transition:.18s}
.topnav a:hover{color:var(--brand);background:var(--brand-soft)}
.topnav a.on{color:var(--brand);background:var(--brand-soft);font-weight:600}

.top-right{margin-left:auto;display:flex;align-items:center;gap:8px}
.search-trigger{
  display:flex;align-items:center;gap:9px;height:36px;padding:0 12px 0 11px;
  border:1px solid var(--line);background:var(--card);border-radius:10px;
  color:var(--ink-3);font-size:13.5px;min-width:210px;transition:.18s;box-shadow:var(--sh-1);
}
.search-trigger:hover{border-color:var(--brand-ring);color:var(--ink-2)}
.search-trigger svg{width:15px;height:15px;flex-shrink:0}
.search-trigger kbd{margin-left:auto}
kbd{
  font-family:var(--mono);font-size:10.5px;padding:2px 5px;border-radius:5px;
  border:1px solid var(--line);background:var(--card-soft);color:var(--ink-3);
  box-shadow:0 1px 0 var(--line);
}
.icon-btn{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  border:1px solid var(--line);background:var(--card);color:var(--ink-2);
  transition:.18s;box-shadow:var(--sh-1);
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand-ring)}
.icon-btn svg{width:17px;height:17px}
#themeToggle .moon{display:none}
[data-theme="dark"] #themeToggle .sun{display:none}
[data-theme="dark"] #themeToggle .moon{display:block}

/* ============================ 页面骨架 ============================ */
main{flex:1 0 auto}
.shell{
  display:grid;grid-template-columns:236px minmax(0,1fr);
  gap:34px;align-items:start;padding:26px 0 70px;
}
.sidebar{position:sticky;top:calc(var(--topbar-h) + 18px);max-height:calc(100vh - var(--topbar-h) - 40px);overflow:auto;padding-right:6px}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px}
.side-group{margin-bottom:22px}
.side-h{font-size:11px;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;color:var(--ink-3);padding:0 10px 8px}
.side-group a{
  display:flex;align-items:center;gap:9px;padding:7px 10px;border-radius:9px;
  font-size:13.8px;color:var(--ink-2);transition:.16s;position:relative;
}
.side-group a svg{width:15px;height:15px;opacity:.75;flex-shrink:0}
.side-group a span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.side-group a:hover{background:var(--brand-soft);color:var(--brand-ink)}
.side-group a.on{background:var(--brand-soft);color:var(--brand-ink);font-weight:600}
.side-group a.on::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:2.5px;border-radius:2px;background:var(--brand)}
.content{min-width:0}

/* ============================ 首页 Hero ============================ */
.hero{padding:44px 0 26px;text-align:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:99px;
  font-size:12.5px;font-weight:600;color:var(--brand-ink);
  background:var(--brand-soft);border:1px solid var(--brand-ring);
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 0 0 var(--brand-ring);animation:pulse 2.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(79,110,247,.4)}70%{box-shadow:0 0 0 10px rgba(79,110,247,0)}100%{box-shadow:0 0 0 0 rgba(79,110,247,0)}}
.hero h1{
  font-size:clamp(30px,5vw,50px);line-height:1.12;font-weight:850;letter-spacing:-1.2px;margin:20px 0 0;
}
.hero h1 span{background:linear-gradient(115deg,var(--brand) 5%,var(--brand-2) 55%,#22d3ee 105%);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{max-width:600px;margin:16px auto 0;color:var(--ink-2);font-size:15.5px}
.hero .meta{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin-top:16px;font-size:12.5px;color:var(--ink-3)}
.hero .meta b{color:var(--ink-2);font-weight:700}

.hub-search{
  display:flex;align-items:center;gap:11px;max-width:560px;margin:30px auto 0;
  height:54px;padding:0 8px 0 18px;border-radius:16px;background:var(--card);
  border:1px solid var(--line);box-shadow:var(--sh-2);transition:.2s;
}
.hub-search:focus-within{border-color:var(--brand-ring);box-shadow:0 0 0 4px var(--brand-soft),var(--sh-2)}
.hub-search svg{width:18px;height:18px;color:var(--ink-3);flex-shrink:0}
.hub-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:15px}
.hub-search input::placeholder{color:var(--ink-3)}
.hub-search .go{padding:9px 16px;border-radius:11px;font-size:13.5px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:var(--sh-brand)}

.chips{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin:22px 0 6px}
.chip{
  padding:7px 15px;border-radius:99px;font-size:13px;font-weight:500;color:var(--ink-2);
  border:1px solid var(--line);background:var(--card);transition:.18s;
}
.chip:hover{border-color:var(--brand-ring);color:var(--brand-ink);transform:translateY(-1px)}
.chip.on{background:var(--ink);color:var(--bg);border-color:var(--ink);font-weight:600}
[data-theme="dark"] .chip.on{background:var(--brand);color:#fff;border-color:var(--brand)}

/* ============================ 工具卡片 ============================ */
.sec-title{display:flex;align-items:baseline;gap:12px;margin:34px 0 16px;padding-bottom:10px;border-bottom:1px solid var(--line-soft)}
.sec-title h2{font-size:17px;font-weight:750;letter-spacing:-.2px}
.sec-title .n{font-family:var(--mono);font-size:11.5px;color:var(--ink-3);padding:2px 7px;border-radius:6px;background:var(--card);border:1px solid var(--line)}

.grid-tools{display:grid;grid-template-columns:repeat(auto-fill,minmax(258px,1fr));gap:14px}
.tcard{
  position:relative;display:flex;gap:13px;padding:17px 16px;border-radius:var(--r-lg);
  background:var(--card);border:1px solid var(--line);box-shadow:var(--sh-1);
  transition:transform .22s cubic-bezier(.2,.7,.2,1),box-shadow .22s,border-color .22s;
  overflow:hidden;
}
.tcard::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(280px 120px at var(--mx,50%) var(--my,0%),var(--brand-soft),transparent 70%);
  opacity:0;transition:opacity .3s;
}
.tcard:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--brand-ring)}
.tcard:hover::after{opacity:1}
.tcard-i{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);transition:.22s;
}
.tcard-i svg{width:19px;height:19px}
.tcard:hover .tcard-i{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:var(--sh-brand)}
.tcard-b{min-width:0}
.tcard-t{font-size:14.5px;font-weight:650;letter-spacing:-.1px;display:flex;align-items:center;gap:6px}
.tcard-d{margin-top:3px;font-size:12.6px;color:var(--ink-3);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ============================ 工具页 ============================ */
.crumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-3);margin-bottom:14px}
.crumb a:hover{color:var(--brand)}
.crumb .sep{opacity:.5}
.tool-head{margin-bottom:22px}
.tool-head h1{font-size:clamp(24px,3.4vw,32px);font-weight:800;letter-spacing:-.7px;display:flex;align-items:center;gap:12px}
.tool-head h1 .hi{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:var(--sh-brand)}
.tool-head h1 .hi svg{width:20px;height:20px}
.tool-head p{margin-top:9px;color:var(--ink-2);font-size:14.5px;max-width:760px}
.tool-tags{display:flex;gap:7px;flex-wrap:wrap;margin-top:13px}
.tag{font-size:11.5px;padding:3px 9px;border-radius:6px;background:var(--card);border:1px solid var(--line);color:var(--ink-3)}
.tag.good{color:var(--ok);border-color:color-mix(in srgb,var(--ok) 30%,transparent);background:var(--ok-soft)}

/* ---------- 面板 ---------- */
.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);
  box-shadow:var(--sh-1);overflow:hidden;margin-bottom:18px;
}
.panel-hd{
  display:flex;align-items:center;gap:10px;padding:13px 18px;
  border-bottom:1px solid var(--line-soft);background:var(--card-soft);
}
.panel-hd h3{font-size:13px;font-weight:700;letter-spacing:.2px;color:var(--ink-2)}
.panel-hd .sp{margin-left:auto;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.panel-bd{padding:18px}
.panel-bd.tight{padding:14px}
.panel-ft{padding:12px 18px;border-top:1px solid var(--line-soft);background:var(--card-soft);display:flex;gap:10px;align-items:center;flex-wrap:wrap}

/* ---------- 表单 ---------- */
.field{display:flex;flex-direction:column;gap:7px}
.field > label,.lab{font-size:12.5px;font-weight:600;color:var(--ink-2);display:flex;align-items:center;gap:6px}
.field .hint{font-size:11.8px;color:var(--ink-3);line-height:1.5}
.input,.textarea,.select{
  width:100%;padding:10px 12px;border-radius:var(--r);border:1px solid var(--line);
  background:var(--card-soft);color:var(--ink);font-size:14px;transition:.16s;outline:0;
}
.input:hover,.textarea:hover,.select:hover{border-color:color-mix(in srgb,var(--brand) 30%,var(--line))}
.input:focus,.textarea:focus,.select:focus{border-color:var(--brand);background:var(--card);box-shadow:0 0 0 3px var(--brand-soft)}
.textarea{font-family:var(--mono);font-size:13px;line-height:1.62;resize:vertical;min-height:170px;tab-size:2}
.input.mono{font-family:var(--mono);font-size:13px}
.select{appearance:none;cursor:pointer;padding-right:34px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23878da0' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center}
textarea::placeholder,.input::placeholder{color:var(--ink-3)}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.row.between{justify-content:space-between}
.stack{display:flex;flex-direction:column;gap:14px}
.grow{flex:1;min-width:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:9px 16px;border-radius:10px;font-size:13.5px;font-weight:600;
  border:1px solid var(--line);background:var(--card);color:var(--ink);
  box-shadow:var(--sh-1);transition:.18s;white-space:nowrap;
}
.btn:hover{border-color:var(--brand-ring);color:var(--brand-ink);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn svg{width:15px;height:15px}
.btn.primary{color:#fff;border-color:transparent;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:var(--sh-brand)}
.btn.primary:hover{color:#fff;filter:brightness(1.06);box-shadow:0 14px 30px rgba(79,110,247,.36)}
.btn.soft{background:var(--brand-soft);border-color:transparent;color:var(--brand-ink);box-shadow:none}
.btn.soft:hover{background:color-mix(in srgb,var(--brand) 16%,transparent)}
.btn.danger{color:var(--err);border-color:color-mix(in srgb,var(--err) 26%,transparent);background:var(--err-soft);box-shadow:none}
.btn.sm{padding:6px 11px;font-size:12.5px;border-radius:8px}
.btn.xs{padding:4px 9px;font-size:11.5px;border-radius:7px;box-shadow:none}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn-row{display:flex;gap:8px;flex-wrap:wrap}

/* ---------- 分段控件 ---------- */
.seg{display:inline-flex;padding:3px;gap:2px;border-radius:11px;background:var(--card-soft);border:1px solid var(--line)}
.seg button{padding:6px 13px;border-radius:8px;font-size:12.8px;font-weight:600;color:var(--ink-3);transition:.16s}
.seg button:hover{color:var(--ink-2)}
.seg button.on{background:var(--card);color:var(--brand-ink);box-shadow:var(--sh-1)}

/* ---------- 开关 ---------- */
.check{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);cursor:pointer;user-select:none}
.check input{appearance:none;width:16px;height:16px;border-radius:5px;border:1.6px solid var(--line);background:var(--card);transition:.16s;flex-shrink:0;position:relative;cursor:pointer}
.check input:checked{background:var(--brand);border-color:var(--brand)}
.check input:checked::after{content:"";position:absolute;left:4.5px;top:1.5px;width:4px;height:8px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(42deg)}
.switch{display:inline-flex;align-items:center;gap:9px;font-size:13px;color:var(--ink-2);cursor:pointer;user-select:none}
.switch input{appearance:none;width:38px;height:22px;border-radius:99px;background:var(--line);position:relative;transition:.2s;cursor:pointer;flex-shrink:0}
.switch input::after{content:"";position:absolute;top:2.5px;left:2.5px;width:17px;height:17px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.2);transition:.2s}
.switch input:checked{background:var(--brand)}
.switch input:checked::after{transform:translateX(16px)}

/* ---------- 双栏编辑器 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--line-soft)}
.split > div{min-width:0;display:flex;flex-direction:column}
.split > div + div{border-left:1px solid var(--line-soft)}
.split-hd{display:flex;align-items:center;gap:8px;padding:9px 14px;font-size:11.5px;font-weight:700;letter-spacing:.6px;text-transform:uppercase;color:var(--ink-3);background:var(--card-soft)}
.split-hd .sp{margin-left:auto;display:flex;gap:6px;align-items:center;text-transform:none;letter-spacing:0}
.split textarea{
  border:0;border-radius:0;box-shadow:none!important;background:transparent;
  min-height:320px;padding:14px;font-size:13px;resize:vertical;
}
.split textarea:focus{background:transparent}

/* ---------- 输出区 ---------- */
.out{
  font-family:var(--mono);font-size:12.8px;line-height:1.62;
  padding:14px;min-height:200px;max-height:520px;overflow:auto;
  white-space:pre-wrap;word-break:break-word;background:var(--card-soft);
  border-radius:0;margin:0;
}
.out.plain{background:transparent;padding:0}
.out:empty::before{content:"结果会显示在这里";color:var(--ink-3);font-family:var(--font);font-size:13px}
.err-box{color:var(--err);background:var(--err-soft);border-left:3px solid var(--err);padding:12px 14px;border-radius:0 var(--r) var(--r) 0;font-family:var(--mono);font-size:12.6px;white-space:pre-wrap;line-height:1.7}
.ok-box{color:var(--ok);background:var(--ok-soft);border-left:3px solid var(--ok);padding:10px 13px;border-radius:0 var(--r) var(--r) 0;font-size:13px}

/* ---------- 统计条 ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(104px,1fr));gap:10px}
.stat{background:var(--card-soft);border:1px solid var(--line-soft);border-radius:var(--r);padding:11px 13px}
.stat .v{font-family:var(--mono);font-size:18px;font-weight:700;letter-spacing:-.5px;line-height:1.25;color:var(--ink)}
.stat .l{font-size:11px;color:var(--ink-3);margin-top:2px;letter-spacing:.2px}
.stat.hl .v{color:var(--brand)}

/* ---------- 表格 ---------- */
.tbl-wrap{overflow:auto;border:1px solid var(--line);border-radius:var(--r);max-height:420px}
table.tbl{width:100%;border-collapse:collapse;font-size:12.8px;font-family:var(--mono)}
.tbl th{
  text-align:left;font-family:var(--font);font-size:11px;font-weight:700;letter-spacing:.5px;
  text-transform:uppercase;color:var(--ink-3);padding:8px 11px;background:var(--card-soft);
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:1;
}
.tbl td{padding:7px 11px;border-bottom:1px solid var(--line-soft);vertical-align:top;word-break:break-all}
.tbl tr:last-child td{border-bottom:0}
.tbl tr:hover td{background:var(--brand-soft)}
.tbl td.idx{color:var(--ink-3);width:1%;white-space:nowrap}

/* ---------- 标签页 ---------- */
.tabs{display:flex;gap:2px;border-bottom:1px solid var(--line);padding:0 18px;background:var(--card-soft);overflow-x:auto}
.tabs button{
  padding:11px 14px;font-size:13px;font-weight:600;color:var(--ink-3);
  border-bottom:2px solid transparent;margin-bottom:-1px;transition:.16s;white-space:nowrap;
}
.tabs button:hover{color:var(--ink-2)}
.tabs button.on{color:var(--brand-ink);border-bottom-color:var(--brand)}
.tabpane{display:none;padding:18px}
.tabpane.on{display:block}

/* ---------- 上传区 ---------- */
.drop{
  border:1.5px dashed var(--line);border-radius:var(--r-lg);padding:34px 20px;text-align:center;
  background:var(--card-soft);transition:.2s;cursor:pointer;
}
.drop:hover,.drop.over{border-color:var(--brand);background:var(--brand-soft)}
.drop svg{width:26px;height:26px;color:var(--brand);margin:0 auto 10px}
.drop .t{font-size:14px;font-weight:600}
.drop .s{font-size:12px;color:var(--ink-3);margin-top:4px}

/* ---------- 提示块 ---------- */
.note{
  display:flex;gap:11px;padding:13px 15px;border-radius:var(--r);
  background:var(--brand-soft);border:1px solid var(--brand-ring);
  font-size:12.8px;color:var(--ink-2);line-height:1.6;
}
.note svg{width:16px;height:16px;color:var(--brand);flex-shrink:0;margin-top:2px}
.note b{color:var(--brand-ink)}
.note.warn{background:var(--warn-soft);border-color:color-mix(in srgb,var(--warn) 30%,transparent)}
.note.warn svg{color:var(--warn)}
.note.warn b{color:var(--warn)}

/* ---------- 使用说明 ---------- */
.doc{margin-top:26px}
.doc h2{font-size:15px;font-weight:750;margin:0 0 10px;display:flex;align-items:center;gap:8px}
.doc h2::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--brand)}
.doc p,.doc li{font-size:13.6px;color:var(--ink-2);line-height:1.8}
.doc ul{padding-left:18px;margin:6px 0}
.doc ul li::marker{color:var(--brand)}
.doc code{font-family:var(--mono);font-size:12.2px;padding:1.5px 6px;border-radius:5px;background:var(--brand-soft);color:var(--brand-ink)}
.faq{margin-top:18px;display:flex;flex-direction:column;gap:8px}
.faq details{border:1px solid var(--line);border-radius:var(--r);background:var(--card);overflow:hidden}
.faq summary{padding:11px 14px;font-size:13.4px;font-weight:600;cursor:pointer;list-style:none;display:flex;align-items:center;gap:8px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"+";font-family:var(--mono);color:var(--brand);font-weight:700}
.faq details[open] summary::before{content:"−"}
.faq details p{padding:0 14px 13px 30px;font-size:13px;color:var(--ink-2)}

/* ---------- 相关工具 ---------- */
.related{margin-top:34px}
.related h2{font-size:14px;font-weight:750;margin-bottom:12px;color:var(--ink-2)}

/* ---------- 页脚 ---------- */
footer{
  border-top:1px solid var(--line);background:color-mix(in srgb,var(--card) 55%,transparent);
  padding:26px 0;margin-top:auto;
}
.foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center;font-size:12.5px;color:var(--ink-3)}
.foot-links{display:flex;gap:16px;flex-wrap:wrap}
.foot-links a:hover{color:var(--brand)}
.foot b{color:var(--ink-2);font-weight:600}

/* ---------- Toast ---------- */
.toast-wrap{position:fixed;left:50%;bottom:26px;transform:translateX(-50%);z-index:200;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}
.toast{
  display:flex;align-items:center;gap:9px;padding:10px 17px;border-radius:11px;
  background:#14161e;color:#fff;font-size:13px;font-weight:500;
  box-shadow:0 12px 34px rgba(0,0,0,.28);animation:tin .26s cubic-bezier(.2,.8,.2,1);
  max-width:min(440px,92vw);
}
[data-theme="dark"] .toast{background:#e9ecf4;color:#15171e}
.toast.ok{background:#0f9d58}
.toast.err{background:#e11d48}
.toast svg{width:15px;height:15px;flex-shrink:0}
@keyframes tin{from{opacity:0;transform:translateY(12px) scale(.96)}to{opacity:1;transform:none}}

/* ---------- 命令面板 ---------- */
.cmdk{position:fixed;inset:0;z-index:150;display:none;align-items:flex-start;justify-content:center;padding-top:12vh}
.cmdk.open{display:flex}
.cmdk-mask{position:absolute;inset:0;background:rgba(12,15,22,.42);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}
.cmdk-box{
  position:relative;width:min(600px,92vw);background:var(--card);border:1px solid var(--line);
  border-radius:18px;box-shadow:0 30px 80px rgba(10,14,24,.35);overflow:hidden;
  animation:cin .2s cubic-bezier(.2,.8,.2,1);
}
@keyframes cin{from{opacity:0;transform:translateY(-10px) scale(.98)}to{opacity:1;transform:none}}
.cmdk-in{display:flex;align-items:center;gap:10px;padding:14px 16px;border-bottom:1px solid var(--line-soft)}
.cmdk-in svg{width:17px;height:17px;color:var(--ink-3);flex-shrink:0}
.cmdk-in input{flex:1;border:0;outline:0;background:transparent;font-size:15px}
.cmdk-list{max-height:min(52vh,420px);overflow:auto;padding:8px}
.cmdk-item{display:flex;align-items:center;gap:11px;padding:9px 11px;border-radius:10px;cursor:pointer}
.cmdk-item.on{background:var(--brand-soft)}
.cmdk-item .ci{width:28px;height:28px;border-radius:8px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);flex-shrink:0}
.cmdk-item .ci svg{width:15px;height:15px}
.cmdk-item .ct{font-size:13.6px;font-weight:600}
.cmdk-item .cd{font-size:11.6px;color:var(--ink-3);margin-left:auto;flex-shrink:0;max-width:44%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cmdk-foot{padding:8px 14px;border-top:1px solid var(--line-soft);background:var(--card-soft);font-size:11.5px;color:var(--ink-3);display:flex;gap:14px}
.cmdk-empty{padding:28px;text-align:center;color:var(--ink-3);font-size:13px}

/* ---------- 杂项 ---------- */
.reveal{animation:fadeUp .5s cubic-bezier(.2,.8,.2,1) both}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.copy-inline{position:relative}
.mini-note{font-size:11.8px;color:var(--ink-3)}
.kv{display:grid;grid-template-columns:auto 1fr;gap:7px 14px;font-size:13px}
.kv dt{color:var(--ink-3);white-space:nowrap}
.kv dd{font-family:var(--mono);font-size:12.8px;word-break:break-all}
.swatch{height:74px;border-radius:var(--r);border:1px solid var(--line);transition:background .15s}
input[type=range]{width:100%;accent-color:var(--brand);height:22px}
.badge{display:inline-flex;align-items:center;gap:5px;font-size:11.5px;font-weight:600;padding:3px 8px;border-radius:6px}
.badge.ok{background:var(--ok-soft);color:var(--ok)}
.badge.err{background:var(--err-soft);color:var(--err)}
.badge.warn{background:var(--warn-soft);color:var(--warn)}
.muted{color:var(--ink-3)}
.hide{display:none!important}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .shell{grid-template-columns:1fr;gap:18px;padding-top:16px}
  .sidebar{position:static;max-height:none;overflow:visible;display:flex;gap:8px;overflow-x:auto;padding:0 0 8px}
  .sidebar::-webkit-scrollbar{height:0}
  .side-group{margin:0;display:flex;gap:6px;align-items:center;flex-shrink:0}
  .side-h{display:none}
  .side-group a{white-space:nowrap;padding:6px 12px;border:1px solid var(--line);background:var(--card);border-radius:99px;font-size:12.8px}
  .side-group a.on::before{display:none}
  .side-group a svg{display:none}
}
@media (max-width:860px){
  .topnav{display:none}
  .grid-3{grid-template-columns:1fr}
  .grid-4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:680px){
  .wrap{padding:0 15px}
  .split{grid-template-columns:1fr}
  .split > div + div{border-left:0;border-top:1px solid var(--line-soft)}
  .split textarea{min-height:190px}
  .grid-2{grid-template-columns:1fr}
  .grid-tools{grid-template-columns:1fr}
  .hero{padding:26px 0 14px}
  .hub-search{height:50px;margin-top:22px}
  .hub-search .go{display:none}
  .search-trigger{min-width:0;width:36px;padding:0;justify-content:center}
  .search-trigger span,.search-trigger kbd{display:none}
  .brand-txt small{display:none}
  .panel-bd{padding:14px}
  .tabs{padding:0 10px}
  .tabpane{padding:14px}
  .tool-head h1{gap:9px}
  .tool-head h1 .hi{width:34px;height:34px;border-radius:10px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .foot{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}