:root{--green:#286147;--muted:#66736c;--line:#dce4de}*{box-sizing:border-box}body{margin:0;background:#f6f8f6;color:#18271f;font-family:system-ui,"Microsoft YaHei",sans-serif}.topbar{background:white;border-bottom:1px solid var(--line)}.topbar-inner{max-width:1200px;margin:auto;padding:18px 28px;display:flex;justify-content:space-between}.brand{font-weight:700;color:var(--green);text-decoration:none}.quiet{color:var(--muted)}.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;border-radius:6px;border:1px solid var(--green);font:inherit;cursor:pointer}.primary{background:var(--green);color:white}.secondary{background:white;color:var(--green)}
.extension-hub{max-width:820px;margin:0 auto;padding:64px 28px 40px}.extension-platform{color:var(--green);font-size:14px;font-weight:600}.extension-hub h1{max-width:650px;font-size:36px;letter-spacing:-.025em;line-height:1.4;margin:12px 0 18px}.extension-lead{max-width:600px;color:var(--muted);font-size:17px;line-height:1.9;margin-bottom:26px}.extension-actions{display:flex;gap:12px;flex-wrap:wrap}.extension-actions a{text-decoration:none}.extension-steps{margin-top:52px;padding-top:24px;border-top:1px solid var(--line)}.extension-hub h2{font-size:20px;margin:0 0 22px}.extension-steps ol{padding-left:24px}.extension-steps li{padding:0 0 16px 8px}.extension-steps li::marker{font-variant-numeric:tabular-nums;color:var(--green);font-weight:600}.extension-steps p,.extension-flow p{color:var(--muted);line-height:1.9;margin-top:6px}.extension-flow{margin-top:18px;padding-top:25px;border-top:1px solid var(--line)}.extension-hub code{font-size:13px;background:#edf2ef;padding:2px 5px;border-radius:3px}.extension-hub footer{line-height:1.8}@media(max-width:560px){.extension-hub{padding:36px 20px}.extension-hub h1{font-size:28px}.extension-lead{font-size:15px}.extension-actions>*{width:100%}}