:root{
  --bg:#f6f7fb; --card:#ffffff; --text:#1f2430; --muted:#6b7280; --border:#e5e7eb;
  --primary:#4f46e5; --primary-2:#6366f1; --primary-soft:#eef2ff; --accent:#f59e0b;
  --shadow:0 1px 3px rgba(0,0,0,.08); --shadow-lg:0 8px 24px rgba(0,0,0,.10);
  --radius:14px; --radius-sm:10px;
}
[data-theme="dark"]{
  --bg:#0f1117; --card:#171a24; --text:#e5e7eb; --muted:#9aa1ad; --border:#2a2f3a;
  --primary:#818cf8; --primary-soft:#1e2440; --shadow:0 1px 3px rgba(0,0,0,.5); --shadow-lg:0 8px 24px rgba(0,0,0,.6);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.65;transition:background .2s,color .2s}
.container{max-width:1120px;margin:0 auto;padding:0 16px}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.25;margin:.4em 0 .5em}
p{margin:.4em 0}
button{font:inherit;cursor:pointer}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;gap:16px;padding:10px 16px}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:1.15rem;color:var(--text)}
.brand:hover{text-decoration:none}
.brand-logo{font-size:1.4rem}
.main-nav{display:flex;gap:4px;margin-left:8px;flex:1}
.main-nav a{padding:6px 10px;border-radius:8px;color:var(--text);font-weight:500}
.main-nav a:hover{background:var(--primary-soft);text-decoration:none}
.header-actions{display:flex;align-items:center;gap:8px}
.icon-btn{width:36px;height:36px;border-radius:10px;border:1px solid var(--border);background:var(--card);font-size:1rem}
.lang-select{padding:6px 10px;border-radius:10px;border:1px solid var(--border);background:var(--card);color:var(--text);font-size:.9rem;max-width:170px}
.btn-ghost{padding:8px 14px;min-width:44px;min-height:44px;border-radius:10px;border:1px solid var(--border);background:var(--card);color:var(--text);font-size:.88rem;transition:border-color .15s,color .15s,background .15s}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.tool-quick-actions{display:flex;flex-wrap:wrap;gap:8px}
.tool-input-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,160px),1fr));gap:12px;align-items:start}
.tool-input-grid-3{display:grid;grid-template-columns:1fr 48px 1fr;gap:8px;align-items:start}
.tool-check-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,150px),1fr));gap:8px}
.tool-check-card{display:flex;align-items:center;gap:10px;min-height:44px;padding:8px 10px;border:1px solid var(--border);border-radius:8px;background:var(--card);cursor:pointer;color:var(--text);font:inherit;word-break:break-word}
.tool-segmented{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.tool-segmented .btn-ghost.active{background:var(--primary);border-color:var(--primary);color:#fff}
.tool-swap-btn{width:48px;height:44px;min-width:48px;padding:0;border-radius:10px;font-size:1.15rem;align-self:end}
.tool-bar{height:16px;border-radius:8px;background:var(--border);overflow:hidden}
.tool-bar-fill{height:100%;width:100%;border-radius:8px;transition:background .2s ease}
.tool-scale{position:relative;height:18px;border-radius:9px;overflow:hidden}
.tool-scale-marker{position:absolute;top:-3px;width:4px;height:24px;background:#111827;border-radius:2px;left:50%;transform:translateX(-50%)}
.tool-scale-caption{display:flex;justify-content:space-between;font-size:.75rem;color:var(--muted)}
.tool-table-wrap{border:1px solid var(--border);border-radius:8px;overflow:hidden;background:var(--card)}
.tool-table-head{display:grid;grid-template-columns:48px minmax(0,1fr) minmax(0,1fr) minmax(0,1fr);gap:8px;align-items:center;padding:8px 10px;font-size:.8rem;color:var(--muted);border-bottom:1px solid var(--border)}
.tool-table-body{max-height:260px;overflow-y:auto}
.tool-table-row{display:grid;grid-template-columns:48px minmax(0,1fr) minmax(0,1fr) minmax(0,1fr);gap:8px;align-items:center;padding:6px 10px;border-bottom:1px solid var(--border);font-size:.88rem}
.tool-table-row > div:nth-child(n+2){text-align:right;word-break:break-word}
.tool-table-head > div:nth-child(n+2){text-align:right}
.tool-check-card input[type=checkbox]{width:44px;height:44px;flex:0 0 auto;accent-color:var(--primary);cursor:pointer}
.tool-check-card:hover{border-color:var(--primary)}
.tool-upload-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.tool-file-input{min-height:44px;display:inline-flex;align-items:center;padding:8px;border:1px dashed var(--border);border-radius:10px;background:var(--card);color:var(--muted);font-size:.9rem;box-sizing:border-box;min-width:0;max-width:100%;flex:1 1 200px}
.tool-canvas-preview{max-width:100%;max-height:360px;border:1px solid var(--border);border-radius:10px;display:none}
.tool-action-row{display:none;gap:8px;flex-wrap:wrap;margin-top:10px}
.tool-input-textarea{width:100%;min-height:140px;padding:10px 12px;border-radius:8px;border:1px solid var(--border);background:var(--card);color:var(--text);font:inherit;resize:vertical;box-sizing:border-box}
.tool-result-hero{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:14px;border:1px solid var(--border);border-radius:8px;background:var(--bg)}
.tool-result-cell{display:flex;flex-direction:column;gap:4px;min-width:0;flex:1}
.tool-rate-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.tool-preview-box{border:1px solid var(--border);border-radius:8px;padding:12px;overflow:auto;background:var(--bg)}
.tool-preview-box .md-preview{line-height:1.6}
.tool-preview-box .md-preview pre{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:10px;overflow:auto}
.tool-preview-box .md-preview code{background:var(--bg);border:1px solid var(--border);border-radius:4px;padding:1px 5px}
.tool-preview-box .md-preview table{border-collapse:collapse;width:100%}
.tool-preview-box .md-preview th,.tool-preview-box .md-preview td{border:1px solid var(--border);padding:6px 8px;text-align:left}
.tool-segmented-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.tool-segmented-3 .btn-ghost.active{background:var(--primary);border-color:var(--primary);color:#fff}
.tool-emoji-search{min-height:44px;padding:10px 12px;margin-bottom:10px;width:100%;box-sizing:border-box;border:1px solid var(--border);border-radius:10px;background:var(--card);color:var(--text);font:inherit}
.tool-emoji-grid{display:flex;flex-wrap:wrap;gap:6px}
.tool-emoji-btn{font-size:1.5rem;width:48px;height:48px;border:1px solid var(--border);border-radius:10px;background:var(--card);cursor:pointer;transition:border-color .15s,background .15s}
.tool-emoji-btn:hover{border-color:var(--primary);background:var(--primary-soft)}
.tool-inline-field{display:inline-flex;align-items:center;gap:6px;min-height:44px;margin-inline-end:12px}
.tool-inline-input{width:80px;min-height:44px;padding:6px 8px;border-radius:8px;border:1px solid var(--border);background:var(--bg);color:var(--text);font:inherit;box-sizing:border-box}
.tool-crop-controls{display:none;flex-direction:column;gap:10px;margin-top:12px}
.tool-swatch-grid{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.tool-swatch{width:72px;height:72px;border-radius:10px;border:1px solid var(--border);display:flex;align-items:flex-end;justify-content:center;padding:4px;font-size:11px;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.6);cursor:pointer}
.tool-drop-zone{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;min-height:150px;padding:22px 14px;border:2px dashed var(--border);border-radius:8px;background:var(--bg);cursor:pointer;text-align:center;outline:none}
.tool-drop-title{font-weight:700;font-size:1.05rem;word-break:break-word}
.tool-drop-hint{font-size:13px;opacity:.75;word-break:break-word}
.tool-file-name{display:none;font-size:13px;word-break:break-all;padding:8px 10px;border-radius:8px;border:1px solid var(--border);background:var(--card)}
.tool-compare-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px}
.tool-preview-img{display:none;max-width:100%;max-height:280px;object-fit:contain;border-radius:8px;border:1px solid var(--border);background:var(--bg)}
.tool-preview-meta{font-size:13px;opacity:.85;word-break:break-word;min-height:1.2em}
.tool-control-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.tool-color-input{width:44px;height:44px;padding:2px;border:1px solid var(--border);border-radius:8px;background:var(--card);box-sizing:border-box;cursor:pointer}
.tool-qr-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px;margin-top:14px;min-width:0}
.tool-qr-card{display:flex;flex-direction:column;gap:6px;align-items:center;cursor:pointer;min-width:0;max-width:100%}
.tool-qr-card .tool-hint{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:center}
.tool-qr-canvas{max-width:100%;height:auto;border:1px solid var(--border);border-radius:8px;background:#fff}
.tool-swatch-btn{width:56px;height:56px;border-radius:8px;border:1px solid var(--border);cursor:pointer;padding:0}
.tool-swatch-btn-wide{min-width:120px;min-height:56px;border-radius:8px;border:1px solid var(--border);cursor:pointer;padding:8px;font-weight:700}

/* ---------- hero ---------- */
.hero{text-align:center;padding:48px 0 32px}
.hero h1{font-size:clamp(1.8rem,4.5vw,3rem);margin:0 0 8px}
.hero-tagline{color:var(--muted);font-size:1.05rem;max-width:640px;margin:0 auto 24px}
.search-box{position:relative;max-width:560px;margin:0 auto}
.search-box .search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);opacity:.55}
.tool-search-input{width:100%;padding:14px 44px 14px 46px;border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--text);font-size:1rem;outline:none;box-shadow:var(--shadow)}
.tool-search-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
.search-count{color:var(--muted);font-size:.9rem;margin-top:10px}

/* ---------- category chips ---------- */
.cat-chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;padding:8px 0 8px}
.chip{padding:7px 14px;border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--text);font-size:.9rem;transition:.15s}
.chip:hover{border-color:var(--primary)}
.chip.active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ---------- home browser & compact directory ---------- */
/* ---------- home browser: left category rail + tool directory ---------- */
.home-browser{min-height:280px}
html.home-modern .home-static-fallback{display:none}
.home-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:24px;align-items:start}
.home-sidebar{position:sticky;top:calc(var(--header-h,56px) + 14px);max-height:calc(100vh - var(--header-h,56px) - 28px);overflow-y:auto;overscroll-behavior:contain;scrollbar-width:none;-ms-overflow-style:none;padding:2px 8px 14px 2px}
.home-sidebar::-webkit-scrollbar{display:none}
.home-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;padding:0;margin:0;overflow:visible;position:static;background:transparent;backdrop-filter:none}
.home-tab{display:flex;align-items:center;gap:6px;width:100%;min-width:0;min-height:36px;padding:6px 9px;border-radius:8px;border:1px solid transparent;background:transparent;color:var(--muted);font-size:.8rem;white-space:nowrap;text-align:left;transition:.15s}
.home-tab-all{grid-column:1 / -1}
.home-tab .tab-label{min-width:0;overflow:hidden;text-overflow:ellipsis}
.home-tab:hover{border-color:var(--border);background:var(--card);color:var(--text)}
.home-tab.active{background:var(--text);border-color:var(--text);color:var(--bg);font-weight:600}
.home-tab .tab-count{font-size:.68rem;opacity:.7;margin-left:auto;flex:0 0 auto}
.home-main{min-width:0}
.home-mode-switch{display:flex;gap:4px;padding:0 0 10px;margin:0 0 8px;border-bottom:1px solid var(--border)}
.home-mode-btn{flex:1;min-height:34px;padding:6px 8px;border-radius:8px;border:1px solid var(--border);background:var(--card);color:var(--muted);font-size:.85rem;white-space:nowrap;transition:.15s}
.home-mode-btn:hover{border-color:var(--text);color:var(--text)}
.home-mode-btn.active{background:var(--text);border-color:var(--text);color:var(--bg);font-weight:600}
.home-searchbar{position:sticky;top:calc(var(--header-h,56px) + 12px);z-index:40;padding:0 0 12px;margin:0 0 2px;background:var(--bg);border-bottom:1px solid var(--border);box-shadow:0 8px 20px -18px rgba(0,0,0,.28)}
.home-searchbar .search-box{max-width:680px;margin:0}

.home-summary{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:14px 0 4px;padding:0 2px;flex-wrap:wrap}
.home-summary h2{margin:0;font-size:1.05rem}
.home-section-desc{color:var(--muted);font-size:.85rem;margin:2px 0 0}
.search-count{color:var(--muted);font-size:.85rem;margin:0}
.home-more{display:flex;justify-content:center;padding:18px 0 4px}
.load-more{min-height:40px;padding:8px 18px;border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--text);font-size:.9rem;transition:.15s}
.load-more:hover{border-color:var(--primary);color:var(--primary)}
.search-clear{position:absolute;right:12px;top:50%;transform:translateY(-50%);width:28px;height:28px;border:none;border-radius:50%;background:var(--bg);color:var(--muted);font-size:14px;display:grid;place-items:center}
.search-clear:hover{color:var(--text)}
.search-empty{padding:28px 4px;color:var(--muted);text-align:center;font-size:.95rem}

/* ---------- sections & compact rows ---------- */
.cat-section{margin:36px 0;scroll-margin-top:calc(var(--header-h,56px) + 80px)}
.cat-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.cat-icon{font-size:1.8rem}
.cat-head h2{margin:0;font-size:1.4rem}
.cat-head p{margin:0;color:var(--muted);font-size:.9rem}
.tool-grid{display:flex;flex-direction:column;border-top:1px solid var(--border)}
.tool-card,.tool-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:12px;align-items:center;padding:11px 6px;color:var(--text);border-bottom:1px solid var(--border);transition:background .12s}
.tool-card:hover,.tool-row:hover{background:var(--primary-soft);text-decoration:none}
.tool-card-icon{display:grid;place-items:center;width:38px;height:38px;border-radius:8px;background:var(--card);border:1px solid var(--border);font-size:1.2rem;line-height:1}
.tool-card-text{display:flex;flex-direction:column;gap:1px;min-width:0}
.tool-card-name{font-weight:600;font-size:.95rem}
.tool-card-desc{color:var(--muted);font-size:.84rem;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.tool-card-cat{color:var(--muted);font-size:.75rem;white-space:nowrap;padding:2px 8px;border:1px solid var(--border);border-radius:999px;background:var(--card)}

/* ---------- tool page ---------- */
.tool-page{max-width:1060px;margin:0 auto}
.breadcrumb{font-size:.85rem;color:var(--muted);margin:18px 0 8px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.breadcrumb a{color:var(--muted);min-height:28px;display:inline-flex;align-items:center}
.breadcrumb a:hover{color:var(--primary)}
.crumb-sep{opacity:.5}
.tool-title{font-size:clamp(1.55rem,3.2vw,2.2rem);line-height:1.2;margin:6px 0 4px;letter-spacing:0}
.tool-desc{color:var(--muted);max-width:780px;margin:0 0 16px;font-size:1rem;line-height:1.6}
.tool-shell{position:relative;background:var(--card);border:1px solid var(--border);border-radius:14px;box-shadow:0 1px 2px rgba(15,23,42,.04),0 18px 42px -34px rgba(15,23,42,.24);padding:clamp(16px,3vw,28px);margin:14px 0}
.tool-shell::before{content:"";display:block;position:absolute;top:0;left:0;right:0;height:3px;border-radius:14px 14px 0 0;background:linear-gradient(90deg,var(--primary),var(--primary-2) 55%,color-mix(in srgb,var(--accent) 72%,var(--primary-2)));opacity:.9}
.tool-form{display:flex;flex-direction:column;gap:16px}
.tool-fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,210px),1fr));gap:14px 16px;align-items:start}
.tool-field{display:flex;flex-direction:column;gap:6px;min-width:0}
.tool-label{font-weight:600;font-size:.9rem;line-height:1.35}
.tool-field input[type=text],.tool-field input[type=number],.tool-field input[type=search],.tool-field input[type=date],.tool-field input[type=time],.tool-field input[type=datetime-local],.tool-field select,.tool-field textarea{
  width:100%;min-height:44px;padding:10px 12px;border-radius:10px;border:1px solid var(--border);background:var(--card);color:var(--text);font:inherit;outline:none;transition:border-color .15s,box-shadow .15s,background .15s}
.tool-field input:hover,.tool-field select:hover,.tool-field textarea:hover{border-color:#c9cfda}
.tool-field input:focus,.tool-field select:focus,.tool-field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft);background:var(--card)}
.tool-field select option{color:var(--text);background:var(--card)}
.tool-field input::placeholder,.tool-field textarea::placeholder{color:var(--muted);opacity:.8}
.tool-field input[type=color]{width:72px;height:44px;padding:4px;border-radius:10px;border:1px solid var(--border);background:var(--card)}
.tool-field .inline{display:flex;gap:12px;flex-wrap:wrap}
.tool-hint{color:var(--muted);font-size:.8rem;line-height:1.45}
.tool-panel-title{font-size:.82rem;font-weight:700;color:var(--muted);margin:0;padding-bottom:10px;border-bottom:1px solid var(--border)}
.btn-primary{padding:11px 22px;min-height:44px;border:none;border-radius:10px;background:var(--primary);color:#fff;font-weight:600;font-size:.95rem;align-self:flex-start;box-shadow:0 10px 22px -14px color-mix(in srgb,var(--primary) 70%,transparent);transition:background .15s,transform .15s,box-shadow .15s}
.btn-primary:hover{background:var(--primary-2);box-shadow:0 12px 24px -14px color-mix(in srgb,var(--primary) 78%,transparent);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.tool-results{min-width:0}
.tool-results-body{min-width:0}
.tool-outputs{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,180px),1fr));gap:12px}
.tool-outputs:not(:has(.tool-output, .tool-stat)){display:flex;flex-direction:column;gap:10px}
.tool-outputs:not(:has(.tool-output, .tool-stat)) > *{min-width:0}
.tool-output{display:flex;flex-direction:column;gap:8px;min-width:0;padding:14px;background:var(--card);border:1px solid var(--border);border-radius:8px;box-shadow:0 1px 2px rgba(15,23,42,.03)}
.tool-output-wide{grid-column:1 / -1}
.tool-output-label{font-weight:600;font-size:.8rem;color:var(--muted);line-height:1.35}
.tool-output-value{font-size:1.16rem;font-weight:700;line-height:1.4;word-break:break-word;color:var(--text)}
.tool-output-textarea{width:100%;min-height:110px;padding:12px;border-radius:8px;border:1px solid var(--border);background:var(--bg);color:var(--text);font:inherit;resize:vertical}
.copy-btn{padding:7px 12px;min-height:44px;display:inline-flex;align-items:center;border-radius:8px;border:1px solid var(--border);background:var(--card);color:var(--muted);font-size:.82rem;align-self:flex-start;transition:.15s}
.copy-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft)}
.tool-note-live{font-size:.85rem;color:var(--muted);word-break:break-word}
.tool-output-mono{font-family:ui-monospace,SFMono-Regular,Consolas,monospace}
.tool-control-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;width:100%}
.tool-grow{flex:1 1 auto;min-width:0}
.tool-password-input{width:100%;min-height:44px;padding:10px 12px;border-radius:10px;border:1px solid var(--border);background:var(--card);color:var(--text);font:inherit;outline:none;transition:border-color .15s,box-shadow .15s}
.tool-password-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
.tool-eye-btn{width:48px;height:48px;min-width:48px;padding:0;display:grid;place-items:center;border-radius:10px;font-size:20px}
.tool-strength-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.tool-meter{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}
.tool-meter-seg{height:10px;border-radius:6px;background:var(--border);transition:background .18s ease}
.tool-criterion-mark{flex:0 0 auto;font-weight:700}
.tool-tip-list{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:6px}
.tool-tip-item{display:flex;align-items:flex-start;gap:8px;font-size:.92rem;color:var(--muted);word-break:break-word}
.tool-tip-dot{flex:0 0 auto}
.tool-preview-stack{display:flex;flex-direction:column;gap:10px}
.tool-preview-photo{max-width:100%;max-height:300px;border-radius:10px;border:1px solid var(--border);display:block}
.tool-download-btn{align-self:flex-start;min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 16px}
.tool-editor-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:12px;align-items:start}
.tool-editor-pane{min-width:0;display:flex;flex-direction:column;gap:8px}
.tool-diff-box{max-height:520px}
.tool-regex-preview{min-height:110px;white-space:pre-wrap;word-break:break-word;overflow:auto}
.tool-section{display:flex;flex-direction:column;gap:10px}
.tool-section-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.tool-section-title{display:flex;align-items:center;gap:8px;min-width:0}
.tool-dot{display:inline-block;width:10px;height:10px;border-radius:50%;flex:none}
.tool-subtotal{font-size:13px;color:var(--muted);font-weight:600}
.tool-balance-wrap{display:flex;flex-direction:column;gap:8px}
.tool-bar-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.tool-bar-label{font-size:13px;color:var(--muted);flex:0 0 auto;min-width:0}
.tool-bar-track-wrap{flex:1 1 160px;min-width:0}
.tool-bar-track{position:relative;height:20px;border-radius:8px;background:var(--bg);border:1px solid var(--border);overflow:hidden;direction:ltr}
.tool-bar-fill-absolute{position:absolute;top:0;left:0;height:100%;width:0;transition:width .2s ease}
.tool-net-delta{font-size:14px;font-weight:700;padding:2px 0}
.tool-advice-box{border:1px solid var(--border);border-left:4px solid #16a34a;border-radius:8px;background:var(--card);padding:12px 14px;font-size:14px;line-height:1.5}
.tool-table-head-3{display:grid;grid-template-columns:56px minmax(0,1fr) 72px;gap:8px;align-items:center;padding:8px 10px;font-size:.8rem;color:var(--muted);border-bottom:1px solid var(--border)}
.tool-table-row-3{display:grid;grid-template-columns:56px minmax(0,1fr) 72px;gap:8px;align-items:center;padding:6px 10px;border-bottom:1px solid var(--border);font-size:.88rem}
.tool-table-value{text-align:right;font-weight:600;word-break:break-word}

.tool-table-head-3-44{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) 44px;gap:6px;align-items:center;padding:8px 10px;font-size:.8rem;color:var(--muted);border-bottom:1px solid var(--border)}
.tool-table-row-3-44{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) 44px;gap:6px;align-items:center;padding:6px 10px;border-bottom:1px solid var(--border)}
.tool-table-name{word-break:break-word;font-size:.9rem}
.tool-table-value-plain{text-align:right;word-break:break-word}
.tool-controls-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:10px}
.tool-field-label{display:flex;align-items:center;gap:8px;min-height:44px;font-weight:600;font-size:.9rem;color:var(--muted)}
.tool-grid-wrap{overflow-x:auto;margin:12px 0}
.tool-editor-grid-table{border-collapse:collapse;min-width:320px}
.tool-table-cell-input{border:1px solid var(--border);padding:2px}
.tool-table-input{width:120px;max-width:100%;min-height:44px;padding:8px;border:1px solid transparent;border-radius:6px;background:var(--bg);color:var(--text);font:inherit}
.tool-inline-input-wide{width:140px}

.mtg-preview-table{border-collapse:collapse;width:100%}
.mtg-preview-table th,.mtg-preview-table td{border:1px solid var(--border);padding:8px 10px}
.mtg-preview-table th{background:var(--primary-soft)}



@media (max-width:900px){
  .tool-check-card input[type="checkbox"]{width:44px;height:44px;min-height:44px;margin:0;padding:0;appearance:none;-webkit-appearance:none;border:1px solid var(--border);border-radius:8px;background:var(--bg);cursor:pointer;position:relative;flex:0 0 auto}
  .tool-check-card input[type="checkbox"]:checked{background:var(--primary);border-color:var(--primary)}
  .tool-check-card input[type="checkbox"]:checked::after{content:"";position:absolute;left:13px;top:12px;width:16px;height:9px;border-left:3px solid #fff;border-bottom:3px solid #fff;transform:rotate(-45deg)}
}

.tool-error{color:#dc2626;font-weight:600;padding:10px 12px;border:1px solid color-mix(in srgb,#dc2626 30%,transparent);border-radius:8px;background:rgba(220,38,38,.06)}
[data-theme="dark"] .tool-error{color:#f87171;border-color:rgba(248,113,113,.28);background:rgba(248,113,113,.08)}
.tool-output-table{overflow-x:auto;border:1px solid var(--border);border-radius:8px;background:var(--card)}
.tool-output-table table{border-collapse:collapse;width:100%;font-size:.88rem}
.tool-output-table th,.tool-output-table td{border:1px solid var(--border);padding:8px 10px;text-align:right;white-space:nowrap}
.tool-output-table th{background:var(--primary-soft);font-weight:600}
.tool-output-html{overflow-x:auto;border:1px solid var(--border);border-radius:8px;background:var(--card)}
.tool-howto{margin:28px 0 6px}
.tool-howto p{color:var(--muted);max-width:780px;line-height:1.65}
.related-tools{margin:30px 0}
.related-tools h2{font-size:1.15rem}
.related-tools .tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:10px;border-top:0}
.related-tools .tool-card{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:10px 12px;padding:12px;border:1px solid var(--border);border-bottom:1px solid var(--border);border-radius:8px;background:var(--card);box-shadow:0 1px 2px rgba(15,23,42,.03);transition:border-color .15s,transform .15s,box-shadow .15s}
.related-tools .tool-card:hover{background:var(--card);border-color:var(--primary);transform:translateY(-1px);box-shadow:0 10px 24px -20px rgba(15,23,42,.3)}
.related-tools .tool-card-icon{width:42px;height:42px;border-radius:10px;font-size:1.25rem}
.related-tools .tool-card-desc{-webkit-line-clamp:2}
.related-tools .tool-card-cat{grid-column:1 / -1;justify-self:start;margin-top:2px}
.tool-note{color:var(--muted);font-size:.85rem;border-left:3px solid var(--border);padding-left:12px;margin:18px 0 36px}

/* ---------- static pages ---------- */
.static-page{max-width:760px;margin:32px auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}

/* ---------- ad ---------- */
.ad-slot{min-height:120px;margin:16px 0;display:flex;align-items:center;justify-content:center;background:var(--card);border:1px dashed var(--border);border-radius:var(--radius-sm);color:var(--muted);font-size:.8rem;overflow:hidden}
.ad-slot:empty{display:none}
.ad-slot ins.adsbygoogle{max-width:100%!important;margin:0 auto!important}
.ad-slot ins.adsbygoogle>div,.ad-slot ins.adsbygoogle iframe{max-width:100%!important}
.ad-leaderboard{min-height:90px}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--border);margin-top:48px;padding:28px 0 40px;background:var(--card)}
.footer-inner{display:flex;flex-direction:column;gap:10px;align-items:center;text-align:center}
.footer-brand{font-weight:700}
.footer-tagline{color:var(--muted);font-weight:400;font-size:.9rem}
.footer-nav{display:flex;flex-wrap:wrap;gap:16px;justify-content:center}
.footer-nav a{color:var(--muted);font-size:.9rem}
.footer-note{color:var(--muted);font-size:.8rem;max-width:640px}

/* RTL layouts for Arabic and any future right-to-left locales */
[dir="rtl"] .search-icon{left:auto;right:16px}
[dir="rtl"] .tool-search-input{padding-left:44px;padding-right:46px;text-align:right}
[dir="rtl"] .search-clear{right:auto;left:12px}
[dir="rtl"] .tool-form,[dir="rtl"] .tool-outputs{text-align:right}
[dir="rtl"] .tool-note{border-left:none;border-right:3px solid var(--border);padding-left:0;padding-right:12px}

/* ---------- below-fold home sections ---------- */
.cat-section{content-visibility:auto;contain-intrinsic-size:auto 900px}
@media (max-width:720px){.cat-section{contain-intrinsic-size:auto 600px}}

/* ---------- responsive ---------- */
@media (max-width:720px){
  .header-inner{flex-wrap:wrap;gap:8px}
  .main-nav{order:3;width:100%;margin:2px 0 0;overflow-x:auto;white-space:nowrap;scrollbar-width:none;-ms-overflow-style:none}
  .main-nav::-webkit-scrollbar{display:none}
  .main-nav a:nth-child(2){display:inline-block}
  .main-nav a{padding:6px 10px}
  .tool-grid{display:flex;flex-direction:column}
  .tool-shell{padding:16px}
  .brand-name{display:none}
  .lang-select{max-width:120px}
  .header-actions{gap:6px}
  .btn-primary{width:100%}
}

/* Mobile and tablet touch targets: keep primary controls at least 44px without changing desktop layout */
@media (max-width:900px){
  .brand,.main-nav a,.footer-nav a{min-height:44px;display:inline-flex;align-items:center}
  .footer-nav a{min-width:44px;justify-content:center}
  .main-nav a{min-width:44px;justify-content:center}
  .brand{min-width:44px;justify-content:center}
  .icon-btn{width:44px;height:44px;flex:0 0 44px}
  .lang-select{min-height:44px;height:44px}
  .tool-search-input{min-height:48px}
  .home-layout{display:block}
  .home-searchbar{top:var(--header-h,56px);padding:10px 16px;margin:0 -16px 10px}
  .home-searchbar.home-searchbar-fixed{position:fixed;top:var(--header-h,56px);left:0;right:0;z-index:50;padding:10px 16px;margin:0;background:var(--bg);border-bottom:1px solid var(--border);box-shadow:0 8px 20px -18px rgba(0,0,0,.28)}
  .home-sidebar{position:sticky;top:calc(var(--header-h,56px) + var(--search-h,64px));z-index:30;max-height:none;overflow:visible;padding:0;margin:0 -16px 10px;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(10px)}
  .home-tabs{display:flex;flex-direction:row;align-items:center;gap:8px;overflow-x:auto;padding:8px 16px;margin:0;position:static;scrollbar-width:none;-ms-overflow-style:none}
  .home-tabs::-webkit-scrollbar{display:none}
  .home-tab{flex:0 0 auto;width:auto;border-radius:999px;border:1px solid var(--border);background:var(--card)}
  .home-tab .tab-count{margin-left:6px}
  .chip{min-height:44px;display:inline-flex;align-items:center;justify-content:center}
  .home-tab{min-height:44px}
  .home-mode-btn{min-height:44px}
  .btn-primary{min-height:48px}
  .copy-btn{min-height:44px;display:inline-flex;align-items:center}
  .breadcrumb a{min-height:44px;display:inline-flex;align-items:center;padding:4px 2px}
  .breadcrumb a{min-width:44px;justify-content:center}
  .tool-shell input:not([type="checkbox"]):not([type="radio"]):not([type="color"]),
  .tool-shell select,
  .tool-shell textarea,
  .tool-shell button{min-height:44px}
  .tool-field input[type="checkbox"]{width:44px;height:44px;min-height:44px;margin:0;padding:0;appearance:none;-webkit-appearance:none;border:1px solid var(--border);border-radius:8px;background:var(--bg);cursor:pointer;position:relative;flex:0 0 auto}
  .tool-field input[type="checkbox"]:checked{background:var(--primary);border-color:var(--primary)}
  .tool-field input[type="checkbox"]:checked::after{content:"";position:absolute;left:13px;top:12px;width:16px;height:9px;border-left:3px solid #fff;border-bottom:3px solid #fff;transform:rotate(-45deg)}
}
/* ===== 紧凑布局：少滚动、快速完成操作 ===== */
.site-header .header-inner{padding:8px 16px}
.hero{padding:20px 0 14px}
.hero h1{font-size:clamp(1.5rem,3.5vw,2.2rem)}
.hero-tagline{margin-bottom:14px;font-size:1rem}
.tool-search-input{padding:11px 44px}
.cat-section{margin:18px 0}
.cat-head{margin-bottom:10px}
.cat-head h2{font-size:1.2rem}
.tool-grid{gap:0}
.tool-card,.tool-row{padding:10px 6px;gap:12px}
.tool-card-icon{font-size:1.15rem;width:36px;height:36px}
.breadcrumb{margin:10px 0 4px}
.tool-title{margin:4px 0;font-size:clamp(1.3rem,3vw,1.8rem)}
.tool-desc{margin-bottom:10px;font-size:.95rem}
.tool-shell{padding:16px;margin:10px 0}
.tool-form{gap:10px}
.tool-field{gap:4px}
.tool-field input[type=text],.tool-field input[type=number],.tool-field input[type=search],.tool-field input[type=date],.tool-field input[type=time],.tool-field input[type=datetime-local],.tool-field select,.tool-field textarea{padding:9px 11px}
.btn-primary{padding:10px 18px}
.tool-outputs{gap:10px}
.tool-output-value{font-size:1.1rem}
.tool-output-textarea{min-height:90px}
.tool-howto{margin:18px 0 4px}
.related-tools{margin:18px 0}
.tool-note{margin:14px 0 24px}
.ad-slot{min-height:80px;margin:10px 0}
.ad-leaderboard{min-height:70px}
.site-footer{margin-top:28px;padding:20px 0 26px}

/* 桌面端：表单与结果同屏双栏，表单吸顶，操作几乎无需滚动 */
@media (min-width:900px){
  #tool{display:grid;grid-template-columns:minmax(300px,420px) minmax(0,1fr);gap:24px;align-items:start}
  #tool > .tool-form:only-child{grid-column:1 / -1}
  #tool > .tool-outputs:only-child{grid-column:1 / -1}
  #tool > .tool-form:not(:only-child){position:sticky;top:calc(var(--header-h,56px) + 16px)}
  .tool-results{min-width:0}
  .tool-output-table{max-width:100%}
}
/* ---------- diff table (text-diff) ---------- */
.diff-table{width:100%;border-collapse:collapse;font-family:ui-monospace,Consolas,monospace;font-size:.85rem}
.diff-table td{border:1px solid var(--border);padding:4px 8px;text-align:left;white-space:pre-wrap;word-break:break-all}
.diff-table .diff-mark{width:28px;text-align:center;font-weight:700;color:var(--muted);user-select:none}
.diff-add{background:rgba(34,197,94,.14)}
.diff-add .diff-mark{color:#16a34a}
.diff-del{background:rgba(239,68,68,.12)}
.diff-del .diff-mark{color:#dc2626}
[data-theme="dark"] .diff-add{background:rgba(34,197,94,.18)}
[data-theme="dark"] .diff-del{background:rgba(239,68,68,.16)}

/* markdown-table-generator custom controls */
.mtg-header{width:44px;height:44px;min-height:44px;margin:0}
@media (min-width: 769px){.mtg-header{width:20px;height:20px;min-height:20px}}