:root{color-scheme:light;--bg:#f7f9f8;--card:#fff;--ink:#163b35;--body:#314a45;--muted:#7b8d88;--line:#e1eae6;--accent:#167e70;--accent-soft:#eaf5f0;--warm:#f3eee3;--shadow:0 12px 35px #1a4d3710;--red:#ae5551;--amber:#a87927;font-family:-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(--body);min-width:300px;-webkit-font-smoothing:antialiased}button,a,input{-webkit-tap-highlight-color:transparent}button,input{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default}a{color:inherit;text-decoration:none}svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #59bcaa;outline-offset:4px}[hidden]{display:none!important}.page-glow{position:absolute;z-index:-1;width:850px;height:580px;max-width:100%;top:-200px;left:50%;transform:translateX(-50%);background:radial-gradient(ellipse,#c9e8db55,transparent 70%);pointer-events:none}.topbar{max-width:1088px;margin:auto;height:94px;padding:0 32px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:11px}.brand-mark{width:32px;height:32px;border-radius:11px;display:grid;place-items:center;background:var(--accent);color:white}.brand-mark svg{width:23px;height:23px;stroke-width:2}.brand strong{font-size:20px;font-weight:700;letter-spacing:-.5px;color:var(--ink)}.brand-divider{height:15px;width:1px;background:var(--line);margin:0 4px}.brand-sub{font-size:13px;color:var(--muted)}.icon-button{width:36px;height:36px;border:1px solid var(--line);border-radius:50%;background:var(--card);color:var(--muted);display:grid;place-items:center}.icon-button:hover{color:var(--accent);border-color:var(--accent)}main{max-width:928px;margin:0 auto;padding:0 32px 28px}.hero{text-align:center;padding:37px 0 40px}.eyebrow{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:500;letter-spacing:2px;color:var(--accent)}.eyebrow>span{width:6px;height:6px;border-radius:50%;background:var(--accent)}h1{font-size:42px;font-weight:650;letter-spacing:-1.7px;line-height:1.35;color:var(--ink);margin:17px 0 17px}.heading-dot{color:#45a691}.mobile-break{display:none}.hero>p{font-size:14px;line-height:1.9;color:var(--muted);margin:0}.recommend-panel{border:1px solid #cadfd5;border-radius:18px;display:flex;align-items:center;gap:17px;padding:25px 27px;background:linear-gradient(110deg,var(--accent-soft),var(--card));box-shadow:0 8px 25px #1e6b4510}.recommend-icon{display:grid;place-items:center;width:43px;height:43px;flex-shrink:0;border-radius:13px;background:var(--card);color:var(--accent);box-shadow:0 3px 12px #1c6b4110}.recommend-copy{flex:1;min-width:0}.section-kicker{font-size:11px;font-weight:600;color:var(--accent);letter-spacing:1.5px}.recommend-copy h2{margin:6px 0 7px;font-size:19px;font-weight:650;color:var(--ink);letter-spacing:-.3px}.recommend-copy p{margin:0;font-size:12px;line-height:1.6;color:var(--muted)}.button{display:inline-flex;align-items:center;justify-content:center;gap:15px;min-height:41px;padding:0 17px;border:1px solid transparent;border-radius:9px;font-size:12px;font-weight:600;white-space:nowrap;transition:background .15s,border-color .15s,transform .15s}.button:hover:not(:disabled){transform:translateY(-1px)}.button-primary{background:var(--accent);color:#fff;box-shadow:0 4px 9px #167e7022}.button-primary:hover:not(:disabled){background:#126b5f}.button-primary:disabled{opacity:.52;box-shadow:none}.button svg{width:17px;height:17px}.auto-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:17px 5px 32px}.toggle-label{display:inline-flex;align-items:center;gap:9px;cursor:pointer;font-size:12px;color:var(--body)}.toggle-label input{position:absolute;width:1px;height:1px;opacity:0}.switch{display:inline-block;position:relative;width:29px;height:17px;flex-shrink:0;border-radius:20px;background:#cdd9d4;transition:background .2s}.switch:after{content:"";position:absolute;background:#fff;width:13px;height:13px;border-radius:50%;top:2px;left:2px;box-shadow:0 1px 3px #0002;transition:transform .2s}.toggle-label input:checked+.switch{background:var(--accent)}.toggle-label input:checked+.switch:after{transform:translateX(12px)}.toggle-label input:focus-visible+.switch{outline:3px solid #59bcaa;outline-offset:3px}.auto-feedback{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--muted)}#cancel-auto{padding:0;background:none;border:0;font-size:11px;color:var(--accent);text-decoration:underline;text-underline-offset:3px}.section-heading{display:flex;justify-content:space-between;align-items:center;margin:0 2px 13px}.section-heading>div{display:flex;align-items:baseline;gap:11px}.section-heading h2{font-size:14px;font-weight:650;margin:0;color:var(--ink)}.section-heading span{font-size:11px;color:var(--muted)}.refresh-button{background:none;border:0;display:flex;gap:5px;align-items:center;color:var(--muted);padding:6px 0 6px 10px;font-size:11px}.refresh-button svg{width:14px;height:14px}.refresh-button:hover{color:var(--accent)}.refresh-button:disabled{opacity:.5}.scan-progress{height:2px;background:var(--line);margin:0 2px 18px;border-radius:10px;overflow:hidden}.scan-progress>span{display:block;width:0;height:100%;background:#4ba48b;transition:width .3s}.entry-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.entry-card{background:var(--card);border:1px solid var(--line);border-radius:17px;padding:25px 23px 20px;box-shadow:var(--shadow);position:relative;transition:border-color .2s,box-shadow .2s}.entry-card.is-recommended{border-color:#72b69d;box-shadow:0 0 0 1px #72b69d22,0 10px 30px #2464470c}.card-top{display:flex;align-items:center;gap:11px}.region-icon{width:40px;height:40px;flex-shrink:0;border-radius:12px;display:grid;place-items:center;font-size:12px;font-weight:700;letter-spacing:.5px}.region-cn{background:#edf2fb;color:#5577a3}.region-hk{background:#f5f0e6;color:#a7874d}.card-title{flex:1}.card-title h3{font-size:16px;font-weight:650;color:var(--ink);margin:0 0 4px}.card-title p{font-size:10px;color:var(--muted);margin:0;letter-spacing:.4px}.result-badge{font-size:10px;color:var(--muted);display:flex;align-items:center;gap:4px;white-space:nowrap}.result-badge:before{content:"";width:5px;height:5px;display:block;background:currentColor;border-radius:50%}.result-badge[data-state=stable]{color:var(--accent)}.result-badge[data-state=unstable]{color:var(--amber)}.result-badge[data-state=unreachable]{color:var(--red)}.card-description{font-size:11px;color:var(--muted);margin:20px 0 23px}.measurement{display:flex;justify-content:space-between;align-items:center;padding-bottom:21px}.latency{font-size:35px;line-height:1;font-weight:550;letter-spacing:-1px;font-variant-numeric:tabular-nums;color:var(--ink)}.latency-unit{font-size:11px;color:var(--muted);margin-left:5px}.measurement p{font-size:10px;color:var(--muted);margin:9px 0 0}.sample-detail{font-size:10px;color:var(--muted);text-align:right;display:flex;flex-direction:column;gap:9px}.previous-label{color:var(--accent);font-size:10px}.card-footer{border-top:1px solid var(--line);padding-top:17px;display:flex;align-items:center;justify-content:space-between;gap:8px}.entry-domain{font-size:11px;color:var(--muted);letter-spacing:.1px}.button-outline{border-color:var(--line);background:var(--card);color:var(--ink);min-height:36px;padding:0 12px;font-size:11px;gap:11px}.button-outline:hover{border-color:#72b69d;background:var(--accent-soft)}.is-recommended .button-outline{background:var(--accent-soft);color:var(--accent);border-color:#cfe5da}.detection-note{min-height:15px;font-size:10px;color:var(--muted);margin:14px 2px 26px;line-height:1.7}.api-panel{border:1px solid var(--line);border-radius:12px;background:var(--card)}summary{padding:16px 20px;list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-size:11px;color:var(--body)}summary::-webkit-details-marker{display:none}summary>span{display:flex;align-items:center;gap:9px}summary svg{width:16px;height:16px;color:var(--muted)}.chevron{transition:transform .2s}details[open] .chevron{transform:rotate(180deg)}.api-content{padding:0 20px 18px}.api-content>p{font-size:11px;color:var(--muted);line-height:1.6;margin:0 0 13px}.api-address{display:flex;gap:12px;align-items:center;border-top:1px solid var(--line);padding:11px 0 1px;margin-top:10px;font-size:11px}.api-address>span{color:var(--muted);min-width:25px}.api-address code{font-size:11px;flex:1;overflow-wrap:anywhere;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;color:var(--body)}.api-address button{background:var(--accent-soft);border:0;color:var(--accent);border-radius:5px;padding:5px 9px;font-size:10px}.footnotes{padding:24px 4px 0}.footnotes p{font-size:10px;color:var(--muted);line-height:1.9;margin:3px 0}.info-symbol{font-family:serif;font-size:10px;font-weight:700;display:inline-grid;place-items:center;width:12px;height:12px;border:1px solid var(--muted);border-radius:50%;margin-right:3px;line-height:1}.footer-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);margin-top:27px;padding-top:20px;color:var(--muted);font-size:9px;letter-spacing:.5px}.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);padding:11px 20px;border-radius:10px;font-size:12px;color:#fff;background:#244e43;box-shadow:0 8px 25px #0002;z-index:9}.noscript{font-size:12px;line-height:1.7;padding:15px;color:var(--body)}
:root[data-theme=dark]{color-scheme:dark;--bg:#101b18;--card:#192923;--ink:#e3f0e9;--body:#bfd0c6;--muted:#87a297;--line:#2a4037;--accent:#80cbb1;--accent-soft:#213b30;--warm:#3a3525;--shadow:0 12px 35px #0001;--red:#e89991;--amber:#cfad6c}:root[data-theme=dark] .button-primary{background:#77c4a9;color:#102b22}:root[data-theme=dark] .region-cn{background:#253742;color:#a5bdd6}:root[data-theme=dark] .region-hk{background:#3b3527;color:#d3b67e}:root[data-theme=dark] .recommend-panel{border-color:#365b48}:root[data-theme=dark] .page-glow{opacity:.2}
@media(max-width:640px){.topbar{height:73px;padding:0 23px}main{padding:0 20px 24px}.hero{padding:30px 0 31px}h1{font-size:32px;letter-spacing:-1px;margin:16px 0}.hero>p{font-size:12px;line-height:1.9}.eyebrow{font-size:10px;letter-spacing:1.4px}.recommend-panel{gap:11px;padding:19px 17px;flex-wrap:wrap;border-radius:15px}.recommend-icon{width:35px;height:35px;border-radius:10px}.recommend-copy{min-width:210px}.recommend-copy h2{font-size:16px;margin:5px 0 6px}.recommend-copy p{font-size:11px}.section-kicker{font-size:10px}.recommend-panel>.button{margin-top:7px;width:100%;min-height:40px}.auto-row{align-items:flex-start;flex-direction:column;gap:8px;padding:15px 2px 25px}.toggle-label{font-size:11px}.auto-feedback{font-size:10px;min-height:14px;margin-left:38px}.section-heading{margin-bottom:12px}.section-heading>div{gap:7px;align-items:flex-start;flex-direction:column}.section-heading h2{font-size:13px}.section-heading span{font-size:10px}.entry-grid{grid-template-columns:1fr;gap:14px}.entry-card{padding:22px 21px 18px;border-radius:15px}.card-description{margin:17px 0 21px}.measurement{padding-bottom:20px}.latency{font-size:34px}.card-footer{padding-top:15px}.button-outline{min-height:36px}.detection-note{margin-bottom:21px}.api-panel summary{padding:15px 16px}.api-content{padding:0 16px 17px}.api-address{gap:8px}.api-address code{font-size:10px}.footnotes{padding-top:20px}.footnotes p{font-size:9px}.footer-bottom{font-size:8px;gap:10px;margin-top:22px;padding-top:18px}.mobile-break{display:block}.page-glow{height:450px;top:-100px}.brand-mark{width:29px;height:29px;border-radius:10px}.brand strong{font-size:18px}.brand-sub{font-size:12px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

.brand-mark img{display:block;width:100%;height:100%;border-radius:inherit}