:root{color-scheme:light;--ink:#14233d;--muted:#637187;--line:#e2e8f0;--blue:#265bea;--warm:#df882c;--bg:#f5f7fb;--good:#138776;--bad:#c33b4c;--radius:18px;font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-size:14px;line-height:1.6}button,input,select,textarea{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.5}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #80a4ff;outline-offset:3px}[hidden]{display:none!important}.topbar{height:78px;background:#fff;border-bottom:1px solid var(--line);padding:0 max(24px,calc((100vw - 1100px)/2));display:flex;align-items:center;justify-content:space-between}.brand{color:var(--ink);font-size:20px;font-weight:800;display:flex;align-items:center;gap:10px;text-decoration:none;letter-spacing:-.5px}.brand-icon{background:var(--ink);color:white;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-size:20px}.brand-sub{font-size:13px;font-weight:500;color:var(--muted);margin-left:8px;letter-spacing:.5px}.site-pill{font-size:12px;color:var(--muted);display:flex;gap:8px;align-items:center}.site-pill i{width:7px;height:7px;background:var(--good);border-radius:100%}main{max-width:1100px;margin:0 auto;padding:0 24px 50px}.hero{padding:54px 0 34px}.eyebrow,.section-kicker{font-size:11px;letter-spacing:1.8px;font-weight:700;color:var(--blue)}h1{font-size:46px;letter-spacing:-1.8px;line-height:1.25;margin:15px 0 16px;font-weight:800}h2{font-size:19px;letter-spacing:-.3px;margin:4px 0}h3{font-size:16px;margin:12px 0 6px}.hero>p{font-size:16px;color:var(--muted);line-height:1.8;margin:0}.steps{display:flex;gap:26px;margin-top:26px;color:#485872;font-size:13px}.steps span{display:flex;align-items:center;gap:9px}.steps b{display:grid;place-items:center;border:1px solid #ced8e8;width:24px;height:24px;border-radius:50%;font-size:11px;color:var(--ink)}.panel{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:0 2px 6px #15264403}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:20px}.small-tag{border:1px solid var(--line);padding:4px 9px;border-radius:7px;font-size:11px;color:var(--muted);white-space:nowrap}.form-grid{display:grid;grid-template-columns:1.5fr 1fr 1.4fr;gap:16px}label{display:block;font-size:12px;font-weight:600;color:#46556d}select,input[type=text],input[readonly],textarea{width:100%;height:45px;border:1px solid #d7dfea;border-radius:9px;color:var(--ink);background:#fff;padding:10px 12px;margin-top:7px;outline:none;font-size:14px}select{padding-right:26px}input::placeholder{color:#8a96a8;font-size:13px}.optional{font-weight:400;color:#929cad;margin-left:6px}.test-options{margin-top:20px;display:flex;align-items:center;gap:15px;color:var(--muted);font-size:12px}.checkbox{display:flex;align-items:center;gap:7px;font-size:13px;font-weight:500;white-space:nowrap}.checkbox input{accent-color:var(--blue);width:16px;height:16px;margin:0}.actions{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}.button{border-radius:9px;min-height:44px;padding:10px 20px;border:1px solid transparent;font-size:13px;font-weight:600;display:inline-flex;gap:9px;align-items:center;justify-content:center;transition:background .15s,color .15s}.primary{background:var(--blue);color:white}.primary:hover{background:#194acb}.secondary{border-color:#dce3ed;background:white;color:var(--ink)}.secondary:hover{background:#f3f6fb}.stop{color:var(--bad);background:#fff5f6;border-color:#f1cfd5}.button-dot{width:7px;height:7px;border-radius:50%;background:#a8e3dc}.button-dot.warm{background:#e7a34e}.helper{color:var(--muted);font-size:12px;margin:16px 0 0}.notice{border-radius:10px;padding:13px 17px;margin:0 0 20px;background:#eef3ff;border:1px solid #d3dffd;color:#284f9d;overflow-wrap:anywhere}.notice.error{background:#fff2f3;color:#a62d3d;border-color:#efd1d5}.progress-panel{margin-top:16px}.progress-heading{display:flex;align-items:center;justify-content:space-between;font-size:13px}.progress-heading span{color:var(--muted);font-variant-numeric:tabular-nums}.progress-track{height:5px;background:#ebeff7;margin:13px 0 12px;border-radius:4px;overflow:hidden}#progress-fill{height:100%;width:0;background:var(--blue);border-radius:4px;transition:width .3s}.progress-panel p{margin:0;font-size:12px;color:var(--muted)}.results-heading{display:flex;align-items:center;justify-content:space-between;margin:35px 0 16px}.text-button{border:0;background:none;padding:8px 0;color:#526782;font-size:12px;text-decoration:underline;text-underline-offset:4px}.comparison-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.run-card{background:white;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.run-top{padding:23px 24px 17px;border-bottom:1px solid var(--line);border-top:3px solid var(--good)}.run-card.slow .run-top{border-top-color:var(--warm)}.run-eyebrow{font-size:11px;color:var(--good);letter-spacing:.8px;font-weight:700}.run-card.slow .run-eyebrow{color:#bb751f}.run-top h3{font-size:19px;margin:5px 0 3px}.run-meta{color:var(--muted);font-size:11px;display:flex;gap:9px;flex-wrap:wrap}.metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px 12px;padding:22px 24px 8px}.metric-label{font-size:11px;color:var(--muted);display:block}.metric-value{font-size:26px;letter-spacing:-.9px;line-height:1.45;font-weight:700;font-variant-numeric:tabular-nums}.metric-value small{font-size:11px;color:var(--muted);font-weight:400;letter-spacing:0;margin-left:4px}.chart-wrap{padding:14px 24px 18px}.chart-head{display:flex;justify-content:space-between;color:var(--muted);font-size:10px;margin-bottom:5px}.sparkline{width:100%;height:70px;display:block}.route{margin:0 24px;padding:16px 0;border-top:1px solid var(--line)}.route-heading{font-size:11px;color:var(--muted);margin-bottom:9px}.route-flow{display:flex;align-items:flex-start;gap:9px}.route-stop{flex:1;min-width:0}.route-stop b{display:block;font-size:12px}.route-stop span{display:block;color:var(--muted);font-size:10px;overflow-wrap:anywhere;margin-top:3px}.route-arrow{padding-top:2px;color:#b2bccc}.exit-badge{margin-top:14px;padding:10px 12px;background:#f4f7fb;border-radius:8px;display:flex;gap:12px;align-items:flex-start}.exit-badge>span{font-size:10px;color:var(--muted);white-space:nowrap;line-height:1.9}.exit-badge strong{font-size:13px;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.exit-badge small{color:var(--muted);font-size:10px;display:block;font-weight:400}.node-check{margin:0 24px;padding:14px 0;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}.check-line{display:flex;align-items:center;justify-content:space-between;margin:5px 0;gap:12px}.check-value{color:#46556e;text-align:right}.check-value.good{color:var(--good)}.check-value.bad{color:var(--bad)}.run-details{border-top:1px solid var(--line);padding:13px 24px;font-size:11px;color:var(--muted)}.run-details summary{cursor:pointer;color:#506580}.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin:12px 0}.run-note{margin:9px 0 0;overflow-wrap:anywhere}.empty-card{min-height:340px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;border-style:dashed;color:var(--muted);padding:30px}.empty-symbol{width:48px;height:48px;border:1px solid #dce3ec;border-radius:14px;display:grid;place-items:center;font-size:22px;margin-bottom:10px;background:#fff}.empty-card p{font-size:12px;max-width:250px}.findings{margin-top:22px}.finding{padding:14px 0;display:flex;gap:12px;border-top:1px solid #edf0f5}.finding-icon{margin-top:2px;width:22px;height:22px;border-radius:7px;display:grid;place-items:center;flex-shrink:0;color:#617388;background:#eef2f7;font-size:11px;font-weight:700}.finding.good .finding-icon{background:#e6f5f1;color:var(--good)}.finding.warning .finding-icon{background:#fff3e1;color:#bf7c23}.finding.bad .finding-icon{background:#fff0f2;color:var(--bad)}.finding h3{font-size:14px;margin:0 0 3px}.finding p{font-size:12px;color:var(--muted);margin:0}.finding .next{color:#4c5f78;margin-top:5px}.share-panel{margin-top:22px}.share-panel h2{font-size:17px}.share-panel p{font-size:12px;color:var(--muted);margin:7px 0 16px}.share-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}#share-result,#copy-fallback{margin-top:16px}.link-row{display:flex;gap:10px;align-items:center}.link-row input{margin:5px 0 0;font-size:12px}.link-row .button{white-space:nowrap;margin-top:5px;padding:10px 12px}.share-panel textarea{height:auto;resize:vertical;line-height:1.7;font-size:12px}.explain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin:40px 0 28px}.explain-grid article{border-left:2px solid #dce4f0;padding-left:18px}.explain-number{font-size:10px;color:#7b8da7;letter-spacing:.6px}.explain-grid p{font-size:12px;color:var(--muted);margin:0;line-height:1.9}.limitations{font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:18px}.limitations summary{cursor:pointer;font-weight:500;color:#506580}.limitations p{line-height:1.9;max-width:880px}footer{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:23px max(24px,calc((100vw - 1052px)/2));color:#8a97aa;font-size:11px;background:#fff}.mobile-only{display:none}
@media(min-width:1200px){.hero{position:relative}.hero::after{content:"";position:absolute;right:27px;top:55px;width:245px;height:140px;border:1px solid #e0e8f7;border-radius:80px;transform:rotate(-18deg);background:radial-gradient(ellipse at 70% 50%,#dfeaff,#edf3ff00 70%);z-index:-1}.hero::before{content:"";position:absolute;right:80px;top:77px;width:245px;height:140px;border:1px solid #d4dfef;border-radius:80px;transform:rotate(18deg);z-index:-1}}
@media(max-width:800px){h1{font-size:38px}.form-grid{grid-template-columns:1.6fr 1fr}.remark-label{grid-column:1/-1}.steps{gap:15px}.metrics{padding-left:18px;padding-right:18px;gap:16px 8px}.metric-value{font-size:23px}.run-top{padding:18px}.chart-wrap{padding:14px 18px}.route,.node-check{margin:0 18px}.route-flow{gap:5px}.route-stop b{font-size:11px}.run-details{padding:13px 18px}.explain-grid{gap:16px}.comparison-grid{gap:14px}}
@media(max-width:600px){main{padding:0 16px 34px}.topbar{padding:0 16px;height:64px}.brand{font-size:18px}.brand-sub{font-size:11px;margin-left:3px}.site-pill{font-size:10px;gap:5px}.site-pill i{width:5px;height:5px}.hero{padding:33px 0 26px}h1{font-size:35px;letter-spacing:-1.2px;margin:12px 0}.hero>p{font-size:14px}.mobile-only{display:initial}.desktop-only{display:none}.steps{gap:12px;font-size:10px;margin-top:22px}.steps span{gap:5px}.steps b{width:18px;height:18px;font-size:9px;flex-shrink:0}.panel{padding:20px 17px;border-radius:14px}.section-heading{gap:9px;margin-bottom:16px}h2{font-size:16px}.small-tag{font-size:10px}.form-grid{gap:13px}.test-options{gap:10px;font-size:10px;align-items:flex-start}.checkbox{font-size:12px}.actions{gap:10px}.actions>.button:not(.stop){flex:1;padding:10px 12px}.helper{font-size:11px}.results-heading{margin-top:29px}.comparison-grid{grid-template-columns:1fr}.empty-card{min-height:170px}.run-top{padding:18px 20px}.metrics{padding:19px 20px 8px;gap:18px}.metric-value{font-size:26px}.chart-wrap{padding:13px 20px 17px}.route,.node-check{margin:0 20px}.run-details{padding:13px 20px}.findings,.share-panel{margin-top:16px}.share-actions{gap:10px}.share-actions>.button{flex:1;padding:10px 12px;font-size:12px}.share-actions>.text-button{width:100%;text-align:left}.explain-grid{grid-template-columns:1fr;gap:23px;margin-top:31px}.explain-grid h3{margin-top:5px;font-size:14px}.explain-grid p{font-size:11px}.route-stop span{font-size:10px}footer{padding:20px 16px;font-size:10px}.link-row{gap:7px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}