:root{--brand: #0ea5e9;--brand-strong: #0284c7;--ok: #16a34a;--warn: #d97706;--danger: #dc2626;--radius: 10px;--radius-sm: 6px;--gap: 16px;--gap-sm: 10px;--gap-xs: 6px;--shadow: 0 1px 2px rgba(15, 23, 42, .08), 0 8px 24px rgba(15, 23, 42, .06);--font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace}html[data-theme=light]{--bg: #f5f7fa;--bg-elevated: #ffffff;--bg-subtle: #f1f5f9;--bg-inset: #f8fafc;--text: #0f172a;--text-muted: #64748b;--text-faint: #94a3b8;--border: #e2e8f0;--border-strong: #cbd5e1;color-scheme:light}html[data-theme=dark]{--bg: #0b1120;--bg-elevated: #111827;--bg-subtle: #1a2232;--bg-inset: #0f1729;--text: #e6edf7;--text-muted: #9aa8bd;--text-faint: #6b7a91;--border: #1f2a3c;--border-strong: #2c3a52;--shadow: 0 1px 2px rgba(0, 0, 0, .5), 0 12px 32px rgba(0, 0, 0, .35);color-scheme:dark}*{box-sizing:border-box}html,body,#app{height:100%}body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text);font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--brand-strong);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3,h4{margin:0;font-weight:650;line-height:1.3}.app-shell{min-height:100%;display:flex;flex-direction:column}.app-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:var(--gap);padding:12px 22px;background:color-mix(in srgb,var(--bg-elevated) 88%,transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px;color:var(--text)}.brand:hover{text-decoration:none}.brand-mark{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--brand),#6366f1);color:#fff;display:grid;place-items:center;font-size:13px;letter-spacing:.5px}.brand-sub{color:var(--text-faint);font-weight:500;font-size:12px}.header-tools{margin-left:auto;display:flex;align-items:center;gap:var(--gap-sm)}.app-body{flex:1;display:grid;grid-template-columns:232px minmax(0,1fr);gap:24px;padding:22px;max-width:1440px;width:100%;margin:0 auto;align-items:start}.sidebar{position:sticky;top:74px;display:flex;flex-direction:column;gap:18px;max-height:calc(100vh - 96px);overflow:auto;padding-right:4px}.nav-group-title{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--text-faint);margin-bottom:6px}.nav-list{display:flex;flex-direction:column;gap:2px}.nav-item{display:block;padding:6px 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var(--border);color:var(--text-muted);font-size:12.5px}.tool-footnote{margin:0;color:var(--text-faint);font-size:12px}.tool-body{display:flex;flex-direction:column;gap:var(--gap)}.toolbar{display:flex;flex-wrap:wrap;gap:var(--gap-sm);align-items:flex-end;padding:14px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius)}.split{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:var(--gap);align-items:start}.tool-nav{display:flex;gap:var(--gap-sm);flex-wrap:wrap}.nav-card{flex:1 1 200px;text-align:left;padding:10px 14px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg-elevated);color:var(--text);cursor:pointer;font:inherit;display:flex;flex-direction:column;gap:2px}.nav-card-next{text-align:right}.nav-card:hover{border-color:var(--border-strong)}.nav-label{font-size:11px;color:var(--text-faint)}.nav-title{font-weight:600;font-size:13px}.panel{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:var(--gap-sm);padding:10px 14px;border-bottom:1px solid 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var(--border-strong);border-radius:var(--radius-sm);padding:7px 10px;width:100%;outline:none}input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 18%,transparent)}textarea{resize:vertical;min-height:120px;font-family:var(--mono);font-size:12.5px;line-height:1.6}input[type=file]{padding:5px}.grid-2,.grid-3,.grid-4{display:grid;gap:var(--gap-sm)}.grid-2{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.grid-3{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.grid-4{grid-template-columns:repeat(auto-fit,minmax(120px,1fr))}.row{display:flex;gap:var(--gap-sm);align-items:center;flex-wrap:wrap}.row-end{margin-left:auto}.btn{font:inherit;cursor:pointer;border-radius:var(--radius-sm);border:1px solid var(--border-strong);background:var(--bg-elevated);color:var(--text);padding:7px 14px;transition:background .15s ease,border-color .15s ease}.btn:hover:not(:disabled){background:var(--bg-subtle)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}.btn.primary:hover:not(:disabled){background:var(--brand-strong)}.btn.ghost{border-color:transparent;background:transparent;color:var(--text-muted)}.btn.ghost:hover:not(:disabled){color:var(--text);background:var(--bg-subtle)}.btn.danger{color:var(--danger);border-color:color-mix(in srgb,var(--danger) 45%,var(--border-strong))}.btn-xs{padding:3px 9px;font-size:12px}.is-copied{color:var(--ok)}.is-failed{color:var(--danger)}.chips{display:flex;flex-wrap:wrap;gap:var(--gap-xs)}.chip{font:inherit;font-size:12px;cursor:pointer;padding:4px 10px;border-radius:999px;border:1px solid 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td{border-bottom:none}.muted{color:var(--text-muted)}.faint{color:var(--text-faint)}.mono{font-family:var(--mono)}.error-text{color:var(--danger);font-size:12.5px}.ok-text{color:var(--ok)}.warn-text{color:var(--warn)}.hr{border:none;border-top:1px solid var(--border);margin:4px 0}.list{margin:0;padding-left:18px;display:flex;flex-direction:column;gap:4px}.spinner{display:inline-block;width:12px;height:12px;border-radius:50%;border:2px solid var(--border-strong);border-top-color:var(--brand);animation:spin .7s linear infinite;vertical-align:-2px}@keyframes spin{to{transform:rotate(360deg)}}mark{background:color-mix(in srgb,var(--warn) 35%,transparent);color:inherit;border-radius:2px;padding:0 1px}.hero{padding:26px 24px;border-radius:var(--radius);background:linear-gradient(135deg,color-mix(in srgb,var(--brand) 14%,var(--bg-elevated)),var(--bg-elevated));border:1px solid var(--border)}.hero h1{font-size:24px}.hero p{margin:8px 0 0;color:var(--text-muted);max-width:68ch}.search-box{position:relative;margin-top:16px;max-width:520px}.search-box input{padding-left:34px}.search-box:before{content:"";position:absolute;left:11px;top:50%;width:12px;height:12px;margin-top:-8px;border:2px solid var(--text-faint);border-radius:50%}.group-section{display:flex;flex-direction:column;gap:10px}.group-head{display:flex;align-items:baseline;gap:10px;margin-top:6px}.group-head h2{font-size:15px}.group-count{font-size:12px;color:var(--text-faint)}.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:var(--gap-sm)}.tool-card{display:flex;flex-direction:column;gap:4px;padding:12px 14px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg-elevated);color:var(--text);transition:border-color .15s ease,transform .15s ease}.tool-card:hover{border-color:var(--brand);transform:translateY(-1px);text-decoration:none}.tool-card-title{display:flex;align-items:center;gap:6px;font-weight:600;font-size:13.5px}.tool-card-desc{font-size:12px;color:var(--text-muted);line-height:1.5}.tool-card-id{font-family:var(--mono);font-size:11px;color:var(--text-faint)}.empty-state{padding:40px 20px;text-align:center;color:var(--text-faint)}@media(max-width:980px){.app-body{grid-template-columns:minmax(0,1fr);padding:16px;gap:16px}.sidebar{position:static;max-height:34vh;overflow:auto;flex-direction:row;gap:12px;padding-bottom:8px;border-bottom:1px solid var(--border)}.nav-group{min-width:180px;max-width:240px;flex:0 0 auto}.nav-list{flex-direction:row;flex-wrap:wrap;gap:4px}.nav-item{white-space:nowrap;padding:4px 8px;font-size:12px}.tool-title{font-size:19px}}@media(max-width:620px){.app-header{padding:10px 14px}.brand-sub{display:none}.tool-head{flex-direction:column}}