:root{color-scheme:light;--ink:#15243b;--muted:#55657b;--line:#dbe3ed;--blue:#0761ca;--pale:#edf5ff;--paper:#fff;--back:#f6f8fb;--amber:#835000}
*{box-sizing:border-box}html{scroll-padding-top:24px}body{margin:0;color:var(--ink);background:var(--paper);font:16px/1.85 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}a:focus-visible,summary:focus-visible{outline:3px solid #0c77ef;outline-offset:5px;border-radius:3px}img{max-width:100%;display:block}p{margin:0 0 18px}h1,h2,h3{line-height:1.35;letter-spacing:-.025em}h1{font-size:clamp(32px,4.5vw,48px);margin:12px 0 20px}h2{font-size:26px;margin:0 0 22px}h3{font-size:19px;margin:30px 0 12px}ul,ol{padding-left:1.5em;margin:12px 0 22px}li{padding-left:4px;margin-bottom:10px}strong{font-weight:650}::selection{background:#c9e2ff}
.wrap{max-width:1144px;margin:auto;padding:0 32px}.skip{position:absolute;left:20px;top:-100px;z-index:10;background:white;padding:12px}.skip:focus{top:12px}.site-header{border-bottom:1px solid var(--line);background:var(--paper)}.header-inner{min-height:94px;display:flex;gap:32px;justify-content:space-between;align-items:center}.brand{display:flex;align-items:center;gap:13px;color:var(--ink);font-size:19px;font-weight:700;text-decoration:none;white-space:nowrap}.brand img{width:42px;height:42px;border-radius:10px;border:1px solid #e5e9ee}.nav{display:flex;gap:8px;align-items:center}.nav a{color:var(--muted);text-decoration:none;font-size:15px;font-weight:550;padding:10px 16px;border-radius:10px;white-space:nowrap}.nav a[aria-current=page]{background:var(--pale);color:var(--blue)}.nav a:hover{background:var(--back)}
.hero{padding:60px 0 34px}.eyebrow{display:flex;align-items:center;gap:12px;font-size:13px;letter-spacing:.07em;color:var(--blue);font-weight:650}.badge{color:#68501d;background:#fff6df;border:1px solid #ebd7a4;padding:3px 10px;border-radius:6px;font-size:12px;letter-spacing:0}.lede{max-width:720px;font-size:18px;line-height:1.8;color:var(--muted)}.meta{display:flex;flex-wrap:wrap;gap:8px 24px;font-size:13px;color:var(--muted);margin-top:22px}.features{display:flex;flex-wrap:wrap;gap:12px 30px;margin-top:26px;font-size:15px;font-weight:600}.features span{display:flex;align-items:center;gap:8px}.features i{width:7px;height:7px;border-radius:50%;background:var(--blue)}
.notice{border:1px solid var(--line);border-left:3px solid #97abc3;background:var(--back);border-radius:0 10px 10px 0;padding:16px 20px;margin:0 0 48px;color:var(--muted);font-size:14px}.notice strong{color:var(--ink)}.notice p:last-child{margin:0}.layout{display:grid;grid-template-columns:205px minmax(0,1fr);gap:70px;padding-bottom:70px}.toc{align-self:start;position:sticky;top:28px;font-size:14px}.toc-title{margin:0 0 12px;font-size:12px;color:var(--muted);letter-spacing:.08em}.toc ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}.toc li{margin:0;padding:0}.toc a{display:block;padding:9px 14px;color:var(--muted);text-decoration:none;line-height:1.55}.toc a:hover{color:var(--blue);background:var(--pale)}.article{min-width:0;max-width:740px}.article section{padding-top:36px;margin-top:36px;border-top:1px solid var(--line);scroll-margin-top:24px}.article section:first-child{border:0;padding-top:0;margin-top:0}.article p{overflow-wrap:anywhere}.article .subtle{font-size:14px;color:var(--muted)}.callout{padding:24px;background:#fff8eb;border:1px solid #ecd8b4;border-radius:14px}.callout h2{font-size:23px;color:#704508}.callout p:last-child{margin-bottom:0}.callout .subtle{color:#745d36}.steps{list-style:none;padding:0;counter-reset:steps}.steps li{counter-increment:steps;position:relative;padding:0 0 18px 52px;margin:0}.steps li:before{content:counter(steps);position:absolute;left:0;top:0;display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--pale);color:var(--blue);font-weight:650;font-size:14px}.steps strong{display:block;margin-bottom:4px}.steps p{font-size:15px;color:var(--muted);margin:0}.faq{border-bottom:1px solid var(--line)}.faq:first-of-type{border-top:1px solid var(--line)}.faq summary{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:19px 0;cursor:pointer;font-weight:600;list-style:none}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"＋";font-size:22px;font-weight:400;color:var(--blue);flex:none}.faq[open] summary:after{content:"−"}.faq .answer{padding:0 34px 14px 0;color:var(--muted);font-size:15px}.faq .answer p{margin-bottom:12px}.contact{padding:24px;border:1px solid var(--line);border-radius:14px;background:var(--back)}.contact h3{margin:0 0 12px}.contact .pending{color:#76521b;font-size:14px}.info{background:var(--back);border:1px solid var(--line);padding:20px;border-radius:12px;font-size:14px}.info dl{margin:0;display:grid;grid-template-columns:110px 1fr;gap:9px 16px}.info dt{color:var(--muted)}.info dd{margin:0;overflow-wrap:anywhere}.top-link{display:inline-block;margin-top:36px;font-size:14px}.site-footer{border-top:1px solid var(--line);background:var(--back);padding:32px 0 40px;color:var(--muted);font-size:13px}.footer-inner{display:flex;justify-content:space-between;gap:24px}.footer-inner p{margin:0}.footer-links{display:flex;flex-wrap:wrap;gap:20px}.footer-links a{color:var(--muted)}
@media(max-width:800px){.layout{grid-template-columns:1fr;gap:32px}.toc{position:static}.toc ol{display:flex;flex-wrap:wrap;gap:8px;border:0}.toc a{border:1px solid var(--line);border-radius:8px;padding:9px 12px}.article{max-width:none}.hero{padding-top:38px}.notice{margin-bottom:28px}.header-inner{gap:14px}.nav{gap:0}.nav a{padding:10px}.footer-inner{flex-direction:column}}
@media(max-width:540px){.wrap{padding:0 22px}.header-inner{padding-top:20px;padding-bottom:14px;flex-direction:column;align-items:flex-start;gap:16px}.brand{font-size:18px}.brand img{width:36px;height:36px}.nav{width:100%;justify-content:space-between}.nav a{padding:9px 12px;font-size:14px}.hero{padding-top:32px;padding-bottom:26px}h1{font-size:34px}h2{font-size:23px}.lede{font-size:16px}.features{gap:12px 20px;font-size:13px;margin-top:22px}.meta{font-size:12px}.notice{padding:14px 16px;font-size:13px}.layout{padding-bottom:48px}.toc-title{margin-bottom:10px}.toc{font-size:13px}.article section{margin-top:32px;padding-top:32px}.callout,.contact{padding:20px}.callout h2{font-size:21px}.article{font-size:15px}.faq summary{font-size:15px;padding:17px 0}.info dl{grid-template-columns:1fr;gap:2px}.info dd{margin-bottom:10px}}
@media print{.skip,.toc,.nav,.top-link,.site-footer{display:none}.wrap{max-width:none;padding:0}.hero{padding:20px 0}.layout{display:block}.article{max-width:none}.article section{break-inside:avoid}.notice{margin-bottom:24px}body{font-size:11pt;background:white;color:black}a{color:inherit}.header-inner{min-height:60px}details>.answer{display:block!important}details>summary:after{display:none}.badge{border-color:#aaa;background:white}.callout,.contact,.info{background:white}}