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:root{--floor:#e8ebee;--plate:#fff;--steel:#1f262d;--muted:#5a6570;--line:#c9d1d8;--safety:#f6b417;--safety-ink:#1f262d;--blue:#0b7fc0;--ok:#1b8048;--bad:#c2332a;--tint:#f4f6f8;--ok-bg:#e4f3ea;--bad-bg:#fbe6e4;--display:var(--font-display), "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;--body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--floor:#171b1f;--plate:#22282e;--steel:#e7eaed;--muted:#9ba6b0;--line:#3a434b;--blue:#4fb3ea;--ok:#55c486;--bad:#f0776d;--tint:#1c2126;--ok-bg:#173324;--bad-bg:#3a1e1c}}:root[data-theme=dark]{--floor:#171b1f;--plate:#22282e;--steel:#e7eaed;--muted:#9ba6b0;--line:#3a434b;--blue:#4fb3ea;--ok:#55c486;--bad:#f0776d;--tint:#1c2126;--ok-bg:#173324;--bad-bg:#3a1e1c}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:72px}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}body{background:var(--floor);color:var(--steel);font-family:var(--body);margin:0;font-size:16px;line-height:1.75}a{color:var(--blue)}:focus-visible{outline:3px solid var(--blue);outline-offset:2px}.shell{grid-template-columns:232px minmax(0,1fr);min-height:100vh;display:grid}.side{border-right:1px solid var(--line);align-self:start;height:100vh;padding:28px 0 28px 24px;position:sticky;top:0;overflow-y:auto}.brand{font-family:var(--display);letter-spacing:.01em;font-size:30px;font-weight:700;line-height:1}.brand small{font-family:var(--body);color:var(--muted);margin-top:6px;font-size:13px;font-weight:400;display:block}.side nav{flex-direction:column;margin-top:28px;display:flex}.side nav a{color:var(--steel);border-left:3px solid #0000;padding:7px 12px;font-size:15px;text-decoration:none}.side nav a:hover{background:var(--tint)}.side nav a.on{border-left-color:var(--safety);background:var(--plate);font-weight:700}.side nav .grp{color:var(--muted);padding:16px 12px 4px;font-size:12.5px}main{width:100%;max-width:960px;padding:0 40px 96px}.hero{background:var(--safety);color:var(--safety-ink);margin:0 -40px;padding:44px 40px 0}.hero h1{margin:0 0 10px;font-size:clamp(30px,4.6vw,46px);font-weight:700;line-height:1.15}.hero p{max-width:36em;margin:0 0 26px;font-size:16.5px}.hazard{background:repeating-linear-gradient(-45deg,#1f262d 0 14px,var(--safety) 14px 28px);height:12px;margin:0 -40px}.decoder{margin-top:-1px;padding:28px 0 8px}.decoder label{margin-bottom:8px;font-size:18px;font-weight:700;display:block}.decoder .row{flex-wrap:wrap;gap:10px;display:flex}.decoder input{min-width:0;font-family:var(--display);border:2px solid var(--steel);background:var(--plate);color:var(--steel);border-radius:6px;flex:220px;padding:8px 14px;font-size:30px;font-weight:600}.chips{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.chip{font-family:var(--display);border:1.5px solid var(--line);background:var(--plate);color:var(--steel);cursor:pointer;border-radius:4px;padding:3px 12px;font-size:18px;font-weight:600}.chip:hover{border-color:var(--steel)}.nameplate{background-color:var(--plate);border:2px solid var(--steel);background-image:radial-gradient(circle 4px at 12px 12px,var(--muted) 98%,transparent),radial-gradient(circle 4px at calc(100% - 12px) 12px,var(--muted) 98%,transparent),radial-gradient(circle 4px at 12px calc(100% - 12px),var(--muted) 98%,transparent),radial-gradient(circle 4px at calc(100% - 12px) calc(100% - 12px),var(--muted) 98%,transparent);border-radius:8px;margin-top:20px;padding:22px 26px}.nameplate .model{font-family:var(--display);font-size:52px;font-weight:700;line-height:1}.nameplate .cat{margin-top:4px;font-size:17px;font-weight:500}.tokens{border:1.5px solid var(--steel);border-radius:4px;flex-wrap:wrap;gap:0;width:max-content;max-width:100%;margin:18px 0 6px;display:flex;overflow:hidden}.tokens div{border-right:1.5px solid var(--steel);min-width:70px;padding:6px 14px}.tokens div:last-child{border-right:0}.tokens b{font-family:var(--display);font-size:26px;line-height:1.1;display:block}.tokens span{color:var(--muted);font-size:13.5px}.specs{grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:0 28px;margin-top:12px;display:grid}.specs div{border-bottom:1px solid var(--line);justify-content:space-between;gap:12px;padding:6px 0;font-size:15px;display:flex}.specs div span:first-child{color:var(--muted)}.specs div span:last-child{text-align:right;font-weight:500}.note{background:var(--tint);border-left:4px solid var(--safety);margin-top:14px;padding:10px 14px;font-size:15px}.miss{color:var(--bad);font-weight:500}section{padding-top:56px}h2{margin:0 0 6px;font-size:28px;font-weight:700;line-height:1.25}h2+.lead{color:var(--muted);max-width:40em;margin:0 0 22px}h3{margin:30px 0 8px;font-size:19px;font-weight:700}h3 .en{font-family:var(--display);color:var(--muted);margin-left:8px;font-size:21px;font-weight:600}p{max-width:42em;margin:0 0 14px}ul,ol{max-width:42em;margin:0 0 14px;padding-left:1.3em}li{margin-bottom:6px}.m{font-family:var(--display);letter-spacing:.01em;white-space:nowrap;font-size:1.12em;font-weight:600}.scroll{border:1px solid var(--line);background:var(--plate);border-radius:6px;margin:0 0 18px;overflow-x:auto}table{border-collapse:collapse;width:100%;min-width:560px;font-size:15px}th,td{text-align:left;border-bottom:1px solid var(--line);vertical-align:top;padding:10px 14px}th{background:var(--tint);white-space:nowrap;font-weight:700}tr:last-child td{border-bottom:0}.steps{counter-reset:s;max-width:none;padding:0;list-style:none}.steps li{counter-increment:s;border-bottom:1px solid var(--line);grid-template-columns:44px 1fr;gap:4px 12px;margin:0;padding:14px 0;display:grid}.steps li:before{content:counter(s);font-family:var(--display);color:var(--safety-ink);background:var(--safety);border-radius:4px;place-items:center;width:40px;height:40px;font-size:34px;font-weight:700;line-height:1;display:grid}.steps b{display:block}.steps span{color:var(--muted);font-size:15px}details{background:var(--plate);border:1px solid var(--line);border-radius:6px;margin-bottom:10px}summary{cursor:pointer;justify-content:space-between;gap:12px;padding:14px 18px;font-weight:700;list-style:none;display:flex}summary::-webkit-details-marker{display:none}summary:after{content:"看应答";color:var(--blue);white-space:nowrap;font-size:14px;font-weight:400}details[open] summary:after{content:"收起"}details .ans{border-top:1px solid var(--line);padding:14px 18px 16px}details .ans p:last-child{margin-bottom:0}dl{max-width:none;margin:0}dl div{border-bottom:1px solid var(--line);grid-template-columns:200px 1fr;gap:6px 20px;padding:12px 0;display:grid}dt{font-weight:700}dt small{font-family:var(--display);color:var(--muted);font-size:17px;font-weight:600;display:block}dd{margin:0}.tools{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-bottom:18px;display:grid}.tool{background:var(--plate);border:1px solid var(--line);border-radius:6px;padding:18px}.tool h4{margin:0 0 10px;font-size:17px}.tool .f{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:10px;display:flex}.tool input,.tool select{font:inherit;border:1.5px solid var(--line);background:var(--floor);color:var(--steel);border-radius:4px;width:96px;padding:6px 10px}.tool select{width:auto}.tool output{font-size:15px;display:block}.tool output b{font-family:var(--display);font-size:30px;font-weight:700}.formula{font-family:var(--display);background:var(--plate);border:1px solid var(--line);white-space:nowrap;border-radius:6px;margin-bottom:14px;padding:12px 16px;font-size:22px;font-weight:600;overflow-x:auto}.check{padding:0;list-style:none}.check label{border-bottom:1px solid var(--line);cursor:pointer;align-items:flex-start;gap:10px;padding:8px 0;display:flex}.check input{width:20px;height:20px;accent-color:var(--blue);flex:none;margin-top:4px}.check input:checked+span{color:var(--muted);text-decoration:line-through}.quiz{background:var(--plate);border:2px solid var(--steel);border-radius:8px;padding:26px}.quiz .bar{background:var(--tint);border-radius:4px;height:8px;margin:6px 0 20px;overflow:hidden}.quiz .bar i{background:var(--safety);width:0;height:100%;transition:width .25s;display:block}.quiz .q{margin-bottom:16px;font-size:20px;font-weight:700;line-height:1.5}.opts{gap:10px;display:grid}.opt{font:inherit;text-align:left;border:1.5px solid var(--line);background:var(--floor);color:var(--steel);cursor:pointer;border-radius:6px;padding:12px 16px}.opt:hover:not(:disabled){border-color:var(--steel)}.opt:disabled{cursor:default;opacity:.75}.opt.right{border-color:var(--ok);background:var(--ok-bg);opacity:1}.opt.wrong{border-color:var(--bad);background:var(--bad-bg);opacity:1}.verdict{background:var(--tint);border-radius:6px;margin-top:16px;padding:12px 16px}.verdict b.ok{color:var(--ok)}.verdict b.no{color:var(--bad)}.btn{font:inherit;border:2px solid var(--steel);background:var(--safety);color:var(--safety-ink);cursor:pointer;border-radius:6px;padding:10px 20px;font-weight:700}.btn.alt{color:var(--steel);background:0 0}.btn:disabled{opacity:.4;cursor:not-allowed}.btnrow{flex-wrap:wrap;gap:10px;margin-top:18px;display:flex}.score{font-family:var(--display);font-size:72px;font-weight:700;line-height:1}.review{margin-top:18px;padding-left:1.2em}.review li{margin-bottom:12px}.review em{color:var(--ok);font-style:normal;font-weight:500}footer{border-top:1px solid var(--line);color:var(--muted);margin-top:64px;padding-top:18px;font-size:14px}@media (max-width:860px){.shell{display:block}.side{z-index:5;border-right:0;border-bottom:1px solid var(--line);background:var(--floor);height:auto;padding:10px 0 0;position:sticky;top:0}.brand{padding:0 16px;font-size:22px}.brand small{display:none}.side nav{flex-direction:row;margin-top:6px;padding:0 8px;overflow-x:auto}.side nav a{white-space:nowrap;border-bottom:3px solid #0000;border-left:0;padding:8px 10px}.side nav a.on{border-bottom-color:var(--safety);background:0 0}.side nav .grp{display:none}main{padding:0 16px 72px}.hero{margin:0 -16px;padding:28px 16px 0}.hazard{margin:0 -16px}html{scroll-padding-top:96px}dl div{grid-template-columns:1fr}.nameplate .model{font-size:42px}.quiz{padding:18px}}