:root{--bg:#f5f8fc;--card:#fff;--line:#e4ebf4;--text:#172033;--muted:#66758b;--blue:#2473ff;--blue2:#5aa2ff;--soft:#eef5ff;--success:#20a66a;--danger:#d94a5c;--shadow:0 18px 50px rgba(35,82,145,.10);--radius:18px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;font-size:14px;line-height:1.65}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}.shell{width:min(1240px,calc(100% - 36px));margin:0 auto}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);border-bottom:1px solid rgba(226,234,244,.9);backdrop-filter:blur(18px)}.header-inner{height:72px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:12px}.brand-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:13px;background:linear-gradient(135deg,var(--blue),var(--blue2));color:#fff;font-weight:800;box-shadow:0 10px 24px rgba(36,115,255,.25)}.brand strong{display:block;font-size:16px}.brand small{display:block;color:var(--muted);font-size:11px;margin-top:-2px}.top-nav{display:flex;gap:8px}.top-nav a{padding:9px 14px;border-radius:10px;color:#4f5d71}.top-nav a:hover,.top-nav a.active{background:var(--soft);color:var(--blue)}.hero{background:linear-gradient(180deg,#fff 0,#f8fbff 100%);border-bottom:1px solid var(--line)}.hero-inner{padding:56px 0 48px;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(330px,.65fr);gap:48px;align-items:center}.eyebrow,.section-heading span,.workspace-header span{font-size:11px;letter-spacing:.15em;font-weight:800;color:var(--blue)}.hero h1{font-size:38px;line-height:1.2;margin:12px 0 16px;max-width:760px}.hero p{font-size:16px;color:var(--muted);max-width:760px}.hero-badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}.hero-badges span{padding:7px 11px;border:1px solid #dce8f8;background:#fff;border-radius:999px;color:#4b5a70;font-size:12px}.search-panel{padding:24px;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow)}.search-panel label{display:block;font-weight:700;margin-bottom:9px}.search-box{height:50px;display:flex;align-items:center;gap:10px;padding:0 14px;background:#f7f9fc;border:1px solid #dfe7f2;border-radius:13px}.search-box:focus-within{background:#fff;border-color:#8bb9ff;box-shadow:0 0 0 4px rgba(36,115,255,.08)}.search-box span{font-size:24px;color:var(--blue)}.search-box input{border:0;outline:0;background:transparent;width:100%;color:var(--text)}.search-panel p{font-size:12px;margin:10px 2px 0}.tool-directory{padding:30px 0 70px}.category-tabs{display:flex;gap:8px;overflow:auto;padding:3px 0 18px;position:sticky;top:72px;background:linear-gradient(var(--bg) 75%,transparent);z-index:20}.category-tab{white-space:nowrap;border:1px solid var(--line);background:#fff;color:#506078;border-radius:11px;padding:9px 13px;cursor:pointer}.category-tab b{font-size:10px;margin-left:3px;color:#8a98aa}.category-tab.active,.category-tab:hover{border-color:#b7d3ff;background:var(--soft);color:var(--blue)}.category-section{padding:26px 0}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:17px}.section-heading h2{margin:3px 0 1px;font-size:24px}.section-heading p{margin:0;color:var(--muted)}.section-heading>b{font-size:12px;color:#8796a9}.tool-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.tool-card{display:flex;align-items:center;gap:13px;min-height:88px;padding:15px;border:1px solid var(--line);background:#fff;border-radius:15px;transition:.2s ease}.tool-card:hover{transform:translateY(-2px);border-color:#bdd6ff;box-shadow:0 12px 28px rgba(40,87,150,.09)}.tool-icon{flex:0 0 auto;width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:var(--soft);color:var(--blue);font-size:17px;font-weight:800}.tool-info{min-width:0}.tool-info strong{display:block;font-size:14px}.tool-info small{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--muted);font-size:12px;line-height:1.5;margin-top:3px}.tool-arrow{margin-left:auto;color:#a4b1c0;font-size:22px}.empty-state{text-align:center;padding:70px 20px;background:#fff;border:1px dashed #cdd9e9;border-radius:18px}.tool-page{padding:28px 0 70px}.tool-shell{max-width:1040px}.breadcrumb{display:flex;gap:8px;align-items:center;color:#7b899b;font-size:12px;margin-bottom:16px}.breadcrumb a:hover{color:var(--blue)}.tool-workspace{background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);overflow:hidden}.workspace-header{display:flex;align-items:center;gap:15px;padding:24px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#fff,#fbfdff)}.workspace-icon{width:52px;height:52px;display:grid;place-items:center;border-radius:15px;background:linear-gradient(135deg,var(--blue),var(--blue2));color:#fff;font-size:21px;font-weight:800}.workspace-header h1{font-size:24px;line-height:1.2;margin:3px 0}.workspace-header p{margin:0;color:var(--muted)}.back-home{margin-left:auto;border:1px solid var(--line);padding:8px 12px;border-radius:10px;color:#5c6a7e}.back-home:hover{border-color:#b7d3ff;color:var(--blue);background:var(--soft)}.privacy-note{margin:20px 24px 0;padding:11px 14px;background:#f5f9ff;border:1px solid #dceaff;border-radius:12px;color:#5d6c80;font-size:12px}.tool-app{padding:24px}.tool-loading{display:grid;place-items:center;min-height:260px;color:var(--muted)}.tool-loading span{width:34px;height:34px;border:3px solid #e2ebf8;border-top-color:var(--blue);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.tool-description{margin-top:18px;padding:22px 24px;background:#fff;border:1px solid var(--line);border-radius:18px}.tool-description h2{font-size:17px;margin:0 0 8px}.tool-description p,.tool-description li{color:var(--muted)}.tool-description ul{padding-left:18px;margin-bottom:0}.tool-form{display:grid;gap:16px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.field{display:grid;gap:7px}.field label{font-size:12px;font-weight:700;color:#435269}.field small{color:var(--muted)}.field input[type=text],.field input[type=url],.field input[type=number],.field input[type=password],.field input[type=datetime-local],.field select,.field textarea{width:100%;border:1px solid #dfe7f1;background:#fbfcfe;color:var(--text);border-radius:11px;padding:11px 12px;outline:0}.field textarea{min-height:180px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:13px;line-height:1.55}.field input:focus,.field select:focus,.field textarea:focus{border-color:#83b4ff;background:#fff;box-shadow:0 0 0 4px rgba(36,115,255,.07)}.checkbox-row{display:flex;gap:16px;align-items:center;flex-wrap:wrap}.checkbox-row label{display:flex;gap:7px;align-items:center;font-weight:500}.action-row{display:flex;gap:10px;flex-wrap:wrap}.primary-btn,.secondary-btn,.danger-btn{border:0;border-radius:11px;padding:10px 16px;cursor:pointer;font-weight:700}.primary-btn{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(36,115,255,.2)}.primary-btn:hover{background:#155fdf}.secondary-btn{background:#edf3fb;color:#466079}.secondary-btn:hover{background:#e2edfa}.danger-btn{background:#fff0f2;color:var(--danger)}.result-panel{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fbfcfe}.result-head{display:flex;align-items:center;justify-content:space-between;padding:10px 13px;border-bottom:1px solid var(--line);background:#f5f8fc}.result-head strong{font-size:12px}.result-body{padding:13px}.result-body pre,.result-body textarea{margin:0;width:100%;min-height:180px;white-space:pre-wrap;word-break:break-word;border:0;outline:0;background:transparent;color:#253146;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:13px}.status-box{padding:12px 14px;border-radius:11px;background:#f5f8fc;color:#5e6c80}.status-box.success{background:#eefaf4;color:#17764d}.status-box.error{background:#fff1f3;color:#b23648}.data-table{width:100%;border-collapse:collapse;font-size:12px}.data-table th,.data-table td{border-bottom:1px solid var(--line);padding:9px 10px;text-align:left;vertical-align:top}.data-table th{background:#f6f8fb}.preview-frame{width:100%;height:520px;border:1px solid var(--line);border-radius:12px;background:#fff}.visual-preview{min-height:220px;display:grid;place-items:center;border:1px dashed #ccd9ea;border-radius:14px;background:#f6f9fd;padding:28px}.upload-list{display:grid;gap:10px}.upload-item{display:grid;grid-template-columns:minmax(0,1fr) 120px auto;gap:12px;align-items:center;padding:12px;border:1px solid var(--line);border-radius:12px}.progress{height:7px;background:#e8eef7;border-radius:999px;overflow:hidden}.progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--blue),var(--blue2));transition:width .2s}.file-result a{color:var(--blue);font-weight:700}.simple-page{padding:50px 0 80px}.simple-page article{max-width:900px;margin:auto;padding:34px;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow)}.simple-page h1{font-size:30px}.simple-page p,.simple-page li{color:var(--muted)}.site-footer{background:#fff;border-top:1px solid var(--line)}.footer-inner{padding:30px 0;display:grid;grid-template-columns:1fr auto;gap:16px;align-items:start}.footer-inner p{margin:4px 0;color:var(--muted);font-size:12px}.footer-links{display:flex;gap:14px;color:#637187}.copyright{grid-column:1/-1;padding-top:14px;border-top:1px solid var(--line);font-size:12px;color:#8995a5}@media(max-width:900px){.hero-inner{grid-template-columns:1fr;gap:25px}.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero h1{font-size:32px}}@media(max-width:640px){.shell{width:min(100% - 24px,1240px)}.header-inner{height:64px}.brand small{display:none}.top-nav a{padding:7px 9px;font-size:12px}.hero-inner{padding:38px 0 32px}.hero h1{font-size:27px}.hero p{font-size:14px}.category-tabs{top:64px}.tool-grid{grid-template-columns:1fr}.section-heading{align-items:flex-start}.workspace-header{align-items:flex-start;flex-wrap:wrap;padding:18px}.workspace-header h1{font-size:21px}.back-home{margin-left:0}.privacy-note{margin:15px 16px 0}.tool-app{padding:16px}.form-grid{grid-template-columns:1fr}.footer-inner{grid-template-columns:1fr}.upload-item{grid-template-columns:1fr}.preview-frame{height:420px}}