:root{
  --bg:#f5f6f8;
  --panel:#ffffff;
  --panel-soft:#fafbfc;
  --border:#e6e8ec;
  --border-strong:#d3d7de;
  --text:#1f2328;
  --muted:#6b7280;
  --faint:#9aa1ab;
  --accent:#2f6feb;
  --accent-hover:#2559c9;
  --accent-soft:#eef3fe;
  --ok:#1a7f45;
  --ok-soft:#eaf6ee;
  --err:#c0392b;
  --err-soft:#fdeceb;
  --warn:#9a6700;
  --warn-soft:#fff7e5;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --radius:12px;
  --shadow:0 1px 2px rgba(16,24,40,.04),0 1px 3px rgba(16,24,40,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:14px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}

/* ---------- topbar ---------- */
.topbar{
  position:sticky;top:0;z-index:20;
  display:flex;align-items:center;gap:20px;
  height:60px;padding:0 20px;
  background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--border);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:500;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:14.5px;font-weight:600}
.brand-sub{font-size:11.5px;color:var(--faint)}
.search-wrap{flex:1 1 auto;max-width:340px;margin-left:auto}
.search{
  width:100%;height:34px;padding:0 12px;
  border:1px solid var(--border);border-radius:9px;background:#fff;
  font-size:13px;color:var(--text);font-family:inherit;outline:none;
}
.search:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.search::placeholder{color:var(--faint)}

/* ---------- layout ---------- */
.layout{
  display:grid;grid-template-columns:236px minmax(0,1fr);
  gap:0;align-items:start;
  max-width:1280px;margin:0 auto;
  min-height:calc(100vh - 60px - 52px);
}
.sidebar{
  position:sticky;top:60px;
  max-height:calc(100vh - 60px);
  overflow-y:auto;
  padding:16px 12px 32px;
  border-right:1px solid var(--border);
}
.nav{display:flex;flex-direction:column;gap:2px}
.nav-cat{
  font-size:11.5px;font-weight:600;color:var(--faint);
  letter-spacing:.04em;padding:14px 10px 6px;
}
.nav-cat:first-child{padding-top:4px}
.nav-item{
  display:flex;align-items:center;gap:9px;
  padding:7px 10px;border-radius:8px;
  font-size:13.5px;color:var(--text);cursor:pointer;
  border:1px solid transparent;
}
.nav-item:hover{background:#eef0f4}
.nav-item.active{background:var(--accent-soft);color:var(--accent);font-weight:500}
.nav-ico{
  flex:0 0 auto;width:22px;height:22px;border-radius:6px;
  background:#eef1f5;color:var(--muted);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:9.5px;letter-spacing:-.02em;
}
.nav-item.active .nav-ico{background:#dbe7fd;color:var(--accent)}

.main{padding:26px 28px 60px;min-width:0}
.view{max-width:900px}

/* ---------- grid view ---------- */
.page-title{font-size:21px;font-weight:600;margin:0 0 6px}
.page-desc{color:var(--muted);font-size:13.5px;margin:0 0 4px}
.cat-block{margin-top:30px}
.cat-name{
  font-size:12px;font-weight:600;color:var(--faint);
  letter-spacing:.05em;margin:0 0 12px;
}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:12px}
.card{
  display:flex;gap:12px;align-items:flex-start;
  padding:15px;border:1px solid var(--border);border-radius:var(--radius);
  background:var(--panel);box-shadow:var(--shadow);cursor:pointer;
  transition:border-color .14s,transform .14s;
}
.card:hover{border-color:var(--accent);transform:translateY(-1px)}
.card-ico{
  flex:0 0 auto;width:34px;height:34px;border-radius:9px;
  background:var(--accent-soft);color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:11px;
}
.card-body{min-width:0;flex:1 1 auto}
.card-name{display:block;font-size:13.5px;font-weight:600;margin:2px 0 3px;line-height:1.4}
.card-desc{display:block;font-size:12.5px;color:var(--muted);line-height:1.5;margin:0}
.empty{padding:60px 0;text-align:center;color:var(--faint);font-size:13.5px}

/* ---------- tool view ---------- */
.back{
  display:inline-flex;align-items:center;gap:5px;
  font-size:13px;color:var(--muted);margin-bottom:16px;cursor:pointer;
}
.back:hover{color:var(--accent)}
.tool-head{margin-bottom:20px}
.tool-head h1{font-size:20px;font-weight:600;margin:0 0 5px;display:flex;align-items:center;gap:10px}
.tool-head h1 .card-ico{width:28px;height:28px;font-size:10px;border-radius:8px}
.tool-head p{color:var(--muted);font-size:13.5px;margin:0}
.panel{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px;box-shadow:var(--shadow);
}
.panel + .panel{margin-top:14px}

/* ---------- form ---------- */
.label{font-size:12.5px;font-weight:600;color:var(--muted)}
.label-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:7px;min-height:26px}
.input,.textarea,.select{
  width:100%;border:1px solid var(--border);border-radius:9px;background:#fff;
  padding:9px 11px;font-size:13.5px;color:var(--text);font-family:inherit;outline:none;
}
.input:focus,.textarea:focus,.select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.textarea{min-height:170px;resize:vertical;font-family:var(--mono);font-size:12.5px;line-height:1.65}
.textarea.tall{min-height:230px}
.textarea[readonly]{background:var(--panel-soft)}
.select{height:36px;padding:0 9px;cursor:pointer}
.input-sm{width:130px}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.row.mt{margin-top:12px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media(max-width:900px){.grid2,.grid3{grid-template-columns:1fr}}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:34px;padding:0 13px;border-radius:9px;
  border:1px solid var(--border);background:#fff;color:var(--text);
  font-size:13px;font-family:inherit;cursor:pointer;
  transition:background .12s,border-color .12s;
  white-space:nowrap;
}
.btn:hover{background:#f3f5f8;border-color:var(--border-strong)}
.btn:active{transform:translateY(.5px)}
.btn:disabled{opacity:.55;cursor:default}
.btn-sm{height:26px;padding:0 9px;font-size:12px;border-radius:7px}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:500}
.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}
.btn-ghost{background:transparent;border-color:transparent;color:var(--muted)}
.btn-ghost:hover{background:#eef0f4;border-color:transparent}
.chips{display:flex;gap:7px;flex-wrap:wrap}

.check{display:inline-flex;align-items:center;gap:6px;font-size:13px;cursor:pointer;user-select:none}
.check input{width:15px;height:15px;accent-color:var(--accent);cursor:pointer;margin:0}
.range{width:100%;accent-color:var(--accent);cursor:pointer}

.msg{font-size:13px;margin-top:12px;padding:9px 12px;border-radius:9px;display:none}
.msg.show{display:block}
.msg.ok{background:var(--ok-soft);color:var(--ok)}
.msg.err{background:var(--err-soft);color:var(--err)}
.msg.warn{background:var(--warn-soft);color:var(--warn)}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fill,minmax(122px,1fr));gap:10px}
.stat{background:var(--panel-soft);border:1px solid var(--border);border-radius:10px;padding:10px 12px}
.stat-val{font-size:18px;font-weight:600;line-height:1.25;word-break:break-all}
.stat-key{font-size:11.5px;color:var(--muted);margin-top:2px}

/* ---------- result rows ---------- */
.res-list{display:flex;flex-direction:column;gap:7px}
.res{
  display:flex;align-items:center;gap:10px;
  padding:8px 11px;border:1px solid var(--border);border-radius:9px;background:var(--panel-soft);
}
.res-key{flex:0 0 108px;font-size:12.5px;color:var(--muted)}
.res-val{flex:1 1 auto;font-family:var(--mono);font-size:12.5px;word-break:break-all;min-width:0}
.res .btn-sm{flex:0 0 auto}

/* ---------- palette ---------- */
.swatches{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.swatch{
  width:78px;border:1px solid var(--border);border-radius:9px;overflow:hidden;cursor:pointer;background:#fff;
}
.swatch-chip{height:46px}
.swatch-code{font-family:var(--mono);font-size:10.5px;text-align:center;padding:4px 2px;color:var(--muted)}
.swatch:hover{border-color:var(--accent)}

/* ---------- qr ---------- */
.qr-box{
  display:flex;align-items:center;justify-content:center;
  min-height:260px;border:1px dashed var(--border-strong);border-radius:var(--radius);
  background:var(--panel-soft);padding:16px;
}
.qr-box canvas,.qr-box img{display:block;max-width:100%;height:auto;image-rendering:pixelated}
.qr-placeholder{color:var(--faint);font-size:13px;text-align:center;line-height:1.7}

/* ---------- drop ---------- */
.drop{
  border:1.5px dashed var(--border-strong);border-radius:var(--radius);
  padding:30px 20px;text-align:center;background:var(--panel-soft);cursor:pointer;
  transition:border-color .15s,background .15s;
}
.drop:hover,.drop.over{border-color:var(--accent);background:var(--accent-soft)}
.drop-title{font-size:13.5px;font-weight:500;margin-bottom:4px}
.drop-sub{font-size:12.5px;color:var(--muted)}
.preview{max-width:100%;max-height:280px;border-radius:10px;border:1px solid var(--border);display:block;margin:0 auto}

/* ---------- footer / legal notice ---------- */
.foot{
  border-top:1px solid var(--border);background:#fff;
  padding:20px 24px 24px;font-size:12.5px;color:var(--faint);line-height:1.75;
}
.foot-note{max-width:900px;margin:0 auto 8px;text-align:center}
.foot-note strong{color:var(--muted);font-weight:600}
.foot-note.en{color:#aeb4bd}
.foot-note:last-of-type{margin-bottom:0}
.foot-link{color:var(--accent);text-decoration:none;white-space:nowrap}
.foot-link:hover{text-decoration:underline}

/* ---------- legal page ---------- */
.legal{max-width:840px;margin:0 auto;padding:34px 26px 70px}
.legal-title{font-size:24px;font-weight:600;margin:0 0 8px}
.legal-sub{font-size:13.5px;color:var(--muted);margin:0 0 6px}
.legal-meta{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 22px}
.legal-meta span{
  font-size:12px;padding:3px 10px;border-radius:999px;
  background:#fff;border:1px solid var(--border);color:var(--muted);
}
.legal-summary{
  background:var(--accent-soft);border:1px solid #cddffb;border-radius:var(--radius);
  padding:18px 20px;margin-bottom:8px;
}
.legal-summary h2{font-size:14.5px;font-weight:600;color:#173a75;margin:0 0 10px}
.legal-summary ul{margin:0;padding-left:20px}
.legal-summary li{font-size:13.5px;color:#1c3f7d;margin:6px 0;line-height:1.75}
.legal-summary .en{color:#3c5f9c;font-size:12.5px}
.legal-body{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px 30px;box-shadow:var(--shadow);
}
.legal-body h2{
  font-size:15.5px;font-weight:600;margin:26px 0 10px;
  padding-bottom:7px;border-bottom:1px solid var(--border);
}
.legal-body h2:first-of-type{margin-top:0}
.legal-body h3{font-size:14px;font-weight:600;margin:20px 0 8px;color:var(--muted)}
.legal-body p{margin:9px 0;font-size:13.5px;line-height:1.85}
.legal-body ul{margin:9px 0;padding-left:22px}
.legal-body li{font-size:13.5px;line-height:1.85;margin:5px 0}
.legal-body .en-text p,.legal-body .en-text li{font-size:13px;line-height:1.8;color:#404650}
.legal-divider{
  display:flex;align-items:center;gap:14px;
  margin:34px 0 26px;color:var(--faint);font-size:12px;letter-spacing:.1em;
}
.legal-divider::before,.legal-divider::after{content:"";flex:1;height:1px;background:var(--border)}
.legal-contact{
  margin-top:26px;padding:16px 20px;background:var(--panel-soft);
  border:1px solid var(--border);border-radius:var(--radius);font-size:13.5px;
}
.legal-contact a{color:var(--accent);text-decoration:none}
.legal-contact a:hover{text-decoration:underline}
.legal-foot{
  margin-top:26px;padding-top:16px;border-top:1px solid var(--border);
  font-size:12.5px;color:var(--faint);line-height:1.85;
}
.lang-switch{display:flex;gap:8px;margin-bottom:20px}
.lang-switch a{
  font-size:13px;padding:5px 13px;border-radius:8px;
  border:1px solid var(--border);color:var(--muted);background:#fff;
}
.lang-switch a:hover{border-color:var(--accent);color:var(--accent)}

@media(max-width:800px){
  .foot{padding:16px 14px 20px}
  .legal{padding:22px 14px 50px}
  .legal-title{font-size:19px}
  .legal-body{padding:20px 18px}
  .legal-summary{padding:15px 16px}
}
.hint{font-size:12.5px;color:var(--faint);margin-top:8px;line-height:1.6}
.hint.en{color:#b3b9c2;margin-top:3px}
.hint-link{color:var(--accent);text-decoration:none}
.hint-link:hover{text-decoration:underline}
.mono{font-family:var(--mono)}
.nowrap{white-space:nowrap}
.divider{height:1px;background:var(--border);margin:18px 0}

::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-thumb{background:#d5d8de;border-radius:5px;border:2px solid transparent;background-clip:content-box}
::-webkit-scrollbar-thumb:hover{background:#bcc1c9;background-clip:content-box}
::-webkit-scrollbar-track{background:transparent}

@media(max-width:800px){
  .topbar{height:auto;flex-wrap:wrap;padding:10px 14px;gap:10px}
  .search-wrap{flex:1 1 100%;max-width:none;margin-left:0}
  .layout{grid-template-columns:1fr}
  .sidebar{position:static;max-height:none;border-right:0;border-bottom:1px solid var(--border);padding:10px 12px}
  .nav{flex-direction:row;flex-wrap:nowrap;overflow-x:auto;gap:6px;padding-bottom:2px}
  .nav-group{display:contents}
  .nav-cat{display:none}
  .nav-item{white-space:nowrap;background:#eef0f4}
  .nav-item.active{background:var(--accent-soft)}
  .main{padding:20px 16px 48px}
  .view{max-width:none}
  .cards{grid-template-columns:1fr}
}