:root{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:#243641;background:#f7f9fa;font-synthesis:none;line-height:1.75;font-size:16px;--muted:#61727d;--line:#dbe3e7;--accent:#245d75}
*{box-sizing:border-box}body{margin:0}a{color:var(--accent);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}a:focus-visible,summary:focus-visible{outline:3px solid #467e93;outline-offset:5px;border-radius:4px}.skip-link{position:absolute;top:-100px;left:20px;padding:10px 16px;background:white;z-index:10}.skip-link:focus{top:12px}.masthead,main,footer{max-width:1120px;margin:0 auto;padding-inline:40px}.masthead{display:flex;justify-content:space-between;align-items:center;padding-top:26px;padding-bottom:26px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;font-weight:650;font-size:21px;color:#243641;text-decoration:none}.brand span{font-size:10px;color:var(--muted);letter-spacing:2px;margin-left:3px}.back{font-size:14px;text-decoration:none}.back span{margin-left:12px}.intro{padding:64px 0 34px}.eyebrow{font-size:11px;letter-spacing:2.3px;font-weight:650;color:var(--muted);margin:0 0 20px}h1{font-size:clamp(38px,5.5vw,60px);line-height:1.3;font-weight:620;letter-spacing:-1.5px;margin:0 0 22px}.lead{font-size:17px;color:var(--muted);margin:0;line-height:1.9}.contact-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:20px}.contact-card{padding:30px;background:#fff;border:1px solid var(--line);border-radius:20px}.contact-card.primary{background:linear-gradient(125deg,#e8f2f5,#f2f6f6 70%,#f6f0e9);border-color:#d3e2e6}.card-label{font-size:12px;color:var(--muted)}h2{font-size:24px;font-weight:600;letter-spacing:-.4px;line-height:1.5;margin:10px 0 14px}.contact-card h2{font-size:22px}.contact-card p{font-size:14px;color:var(--muted);line-height:1.9;margin:15px 0 0}.contact-card .route{font-weight:600;color:#344d5b}.email{font-size:clamp(19px,2.4vw,27px);font-weight:550;display:inline-block;text-decoration:none;overflow-wrap:anywhere}.email span{margin-left:8px}.faq-section{padding-top:60px}.section-heading{margin-bottom:25px}.section-heading .eyebrow{margin-bottom:8px}.section-heading h2{font-size:28px;margin:0 0 8px}.section-heading p:last-child{color:var(--muted);font-size:15px;margin:0}.faq-list{background:#fff;border:1px solid var(--line);border-radius:20px;padding:0 28px}.faq-list details+details{border-top:1px solid var(--line)}summary{padding:23px 0;display:flex;justify-content:space-between;align-items:center;gap:16px;cursor:pointer;list-style:none;font-size:17px;font-weight:550}summary::-webkit-details-marker{display:none}summary::after{content:"+";font-size:24px;font-weight:300;color:var(--muted);flex-shrink:0}details[open]>summary::after{content:"−"}.answer{padding:0 0 22px;max-width:850px}.answer p{font-size:15px;line-height:1.95;color:#526774;margin:0 0 12px}.answer p:last-child{margin-bottom:0}.request-guide{display:grid;grid-template-columns:1fr 1.2fr;gap:40px;margin:48px 0 58px;padding:30px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.request-guide .eyebrow{margin:0 0 12px}.request-guide h2{font-size:21px;margin:0;max-width:280px}.request-guide p{margin:0;font-size:14px;color:var(--muted)}.request-guide .note{margin-top:12px;font-size:13px}footer{padding-bottom:32px}.operator{font-size:14px;margin:0 0 12px}footer nav{display:flex;flex-wrap:wrap;gap:12px 22px;font-size:12px}footer nav a{color:var(--muted);text-decoration:none}.updated{font-size:11px;color:var(--muted);margin:18px 0 0}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:720px){.masthead,main,footer{padding-inline:22px}.masthead{padding-block:22px}.intro{padding-top:40px;padding-bottom:26px}h1{font-size:40px;letter-spacing:-.8px}.lead{font-size:15px}.desktop-break{display:none}.contact-grid{grid-template-columns:1fr;gap:14px}.contact-card{padding:24px;border-radius:16px}.email{font-size:23px}.faq-section{padding-top:40px}.section-heading h2{font-size:25px}.faq-list{padding-inline:20px;border-radius:16px}summary{font-size:16px;padding:21px 0}.request-guide{grid-template-columns:1fr;gap:20px;margin-block:32px 36px}.request-guide h2{max-width:none}.answer p{font-size:14px}footer nav{gap:10px 18px}}
@media(prefers-reduced-motion:no-preference){a,summary{transition:color .15s ease}}
@media print{body{background:#fff}.masthead,.back,.skip-link{display:none}.intro{padding-top:0}.contact-grid,.request-guide{display:block}.contact-card{margin-bottom:15px}.faq-list details .answer{display:block}.contact-card,.faq-list{box-shadow:none}summary::after{display:none}h1{font-size:32px}}