:root{color:#1f2937;font-synthesis:none;--blue:#2563eb;--blue-dark:#1d4ed8;--line:#e3e8ef;--muted:#667085;--surface:#fff;background:#f7f9fc;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft YaHei,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:80px}body{min-width:320px;margin:0;font-size:14px;line-height:1.6}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}button,input,select,textarea,a,summary{touch-action:manipulation}input,select,textarea{max-width:100%}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,a:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline-offset:3px;outline:3px solid #93b8ff}[hidden]{display:none!important}main{min-width:0}.skip-link{z-index:100;border:1px solid var(--blue);background:#fff;border-radius:5px;padding:10px 14px;position:fixed;top:-100px;left:16px}.skip-link:focus{top:10px}.site-header{border-bottom:1px solid var(--line);background:#fff;height:60px}.site-header-inner{justify-content:space-between;align-items:center;gap:20px;max-width:1920px;height:100%;margin:auto;padding:0 24px;display:flex}.site-brand{color:#172238;white-space:nowrap;align-items:center;gap:10px;display:flex}.site-brand:hover{text-decoration:none}.site-brand strong{letter-spacing:-.4px;font-size:19px;font-weight:750}.brand-mark{width:30px;height:30px;color:var(--blue);letter-spacing:-1px;background:#eef4ff;border-radius:7px;place-items:center;font-size:15px;font-weight:700;display:grid}.brand-caption{color:#7a8494;border-left:1px solid var(--line);margin-left:4px;padding-left:12px;font-size:12px;font-weight:400}.site-nav{white-space:nowrap;align-items:center;gap:25px;display:flex}.site-nav a{color:#526072;font-size:13px}.site-nav a[aria-current=page]{color:var(--blue);font-weight:600}.site-footer{border-top:1px solid var(--line);background:#fff;margin-top:64px}.site-footer-inner{flex-wrap:wrap;align-items:center;gap:32px;max-width:1120px;margin:auto;padding:28px 24px;display:flex}.footer-brand{color:#25324a;font-size:16px;font-weight:700}.site-footer p{color:var(--muted);margin:4px 0 0;font-size:12px}.site-footer nav{gap:24px;margin-left:auto;display:flex}.site-footer nav a{color:#526072;font-size:13px}.site-footer .copyright{color:#7a8494;margin:0}.seo-content,.faq-section{width:calc(100% - 48px);max-width:1040px;margin:0 auto}.seo-content{margin-top:52px}.content-section{border-bottom:1px solid var(--line);padding:32px 0}.section-label{color:var(--blue);letter-spacing:1px;margin-bottom:9px;font-size:12px;font-weight:650}.content-section h2,.document-block h2{letter-spacing:-.4px;color:#18263b;margin:0 0 18px;font-size:23px;font-weight:650;line-height:1.5}.content-section h3{color:#26364d;margin:22px 0 8px;font-size:16px;font-weight:650;line-height:1.6}.content-section p,.document-block p{color:#526072;margin:0 0 15px;font-size:15px;line-height:1.95}.content-section p:last-child,.document-block p:last-child{margin-bottom:0}.feature-list{color:#526072;margin:8px 0 16px;padding-left:22px;font-size:15px;line-height:1.95}.feature-list li{margin:4px 0;padding-left:3px}.table-scroll{border:1px solid var(--line);border-radius:8px;max-width:100%;margin:20px 0 0;overflow-x:auto}.table-scroll table{border-collapse:collapse;white-space:nowrap;text-align:left;background:#fff;width:100%;font-size:13px}.table-scroll th,.table-scroll td{border-bottom:1px solid var(--line);padding:13px 16px}.table-scroll thead th{color:#344054;background:#f0f4f9;font-weight:650}.table-scroll tbody th{color:#344054;font-weight:550}.table-scroll td{color:#667085}.table-scroll tr:last-child th,.table-scroll tr:last-child td{border-bottom:0}.faq-section{border-bottom:0;padding-top:40px}.section-intro{color:var(--muted)}.faq-list{border:1px solid var(--line);background:#fff;border-radius:8px;margin-top:18px;overflow:hidden}.faq-item{border-bottom:1px solid var(--line)}.faq-item:last-child{border-bottom:0}.faq-item summary{cursor:pointer;color:#344054;padding:16px 50px 16px 20px;font-size:14px;font-weight:550;list-style:none;position:relative}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"＋";color:#7a8494;font-size:16px;font-weight:400;position:absolute;right:20px}.faq-item[open] summary:after{content:"−"}.faq-item[open] summary{color:var(--blue);background:#f8faff}.faq-item p{color:#526072;margin:8px 0 0;padding:0 20px 17px;font-size:14px;line-height:1.9}.content-section .help-link{margin-top:20px;font-size:13px}.help-link a{margin-left:6px}.document-page{width:calc(100% - 48px);max-width:920px;margin:30px auto 80px}.breadcrumb{color:#7a8494;align-items:center;gap:10px;margin:0 0 30px;font-size:12px;display:flex}.breadcrumb a{color:#667085}.document-heading{border-bottom:1px solid var(--line);margin-bottom:28px;padding-bottom:28px}.document-heading h1{letter-spacing:-.6px;color:#18263b;margin:4px 0 10px;font-size:30px;font-weight:700;line-height:1.45}.document-heading p{color:#667085;margin:0;font-size:15px}.document-block{padding:12px 0 28px;scroll-margin-top:24px}.document-block h2{font-size:21px}.help-index{flex-wrap:wrap;gap:10px;margin:0 0 24px;display:flex}.help-index a{border:1px solid var(--line);color:#526072;background:#fff;border-radius:6px;padding:8px 12px;font-size:13px}.help-index a:hover{color:var(--blue);border-color:#a8c6ff;text-decoration:none}.text-button{background:var(--blue);color:#fff;border-radius:6px;align-items:center;margin-top:10px;padding:10px 18px;font-weight:550;display:inline-flex}.text-button:hover{background:var(--blue-dark);text-decoration:none}@media (max-width:720px){.site-header-inner{gap:12px;padding:0 16px}.brand-caption{display:none}.site-nav{gap:14px}.site-nav a{font-size:12px}.site-brand{gap:7px}.site-brand strong{font-size:17px}.seo-content,.faq-section,.document-page{width:calc(100% - 32px)}.seo-content{margin-top:28px}.content-section{padding:25px 0}.content-section h2{font-size:20px}.content-section p,.document-block p,.feature-list{font-size:14px}.document-heading h1{font-size:26px}.site-footer-inner{gap:18px;padding:24px 16px}.site-footer nav{gap:14px;margin-left:auto}.site-footer .copyright{flex-basis:100%}.site-footer{margin-top:40px}.faq-item summary{padding-left:16px}.faq-item p{padding-left:16px;padding-right:16px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}