
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8;color:var(--ink);background:var(--paper)}a{color:inherit;text-decoration-thickness:1px;text-underline-offset:5px}img{max-width:100%;display:block;height:auto}button,a,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px}p,h1,h2,h3,li,dd,a{overflow-wrap:anywhere}h1,h2,h3{line-height:1.25;margin:0 0 24px;font-weight:700}h1{font-size:clamp(40px,5.4vw,80px);letter-spacing:-.04em}h2{font-size:clamp(28px,3.1vw,42px);letter-spacing:-.025em}h3{font-size:22px}p{margin:0 0 18px}li{margin:12px 0}.wrap{width:min(1180px,calc(100% - 56px));margin:auto}.skip{position:absolute;left:16px;top:-100px;background:var(--ink);color:var(--paper);padding:12px;z-index:20}.skip:focus{top:16px}.site-header{padding:25px 0;border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}.brand{font-size:20px;font-weight:700;text-decoration:none;line-height:1.45}.brand small{display:block;font-size:14px;font-weight:400;letter-spacing:.04em}.nav{display:flex;gap:22px;flex-wrap:wrap;align-items:center}.nav a{font-size:14px;text-decoration:none;min-height:44px;display:flex;align-items:center}.nav a:hover{text-decoration:underline}.eyebrow{font-size:14px;letter-spacing:.09em;margin-bottom:22px;color:var(--muted);font-weight:700}.intro{max-width:650px;font-size:18px}.cta{display:inline-flex;align-items:center;justify-content:center;background:var(--accent);color:var(--button-ink);padding:13px 23px;min-height:48px;text-decoration:none;font-weight:700;font-size:16px}.secondary{background:transparent;color:var(--ink);border:1px solid var(--line)}.actions{display:flex;flex-wrap:wrap;gap:13px;margin-top:30px}.section{padding:88px 0}.section-label{font-size:14px;letter-spacing:.08em;color:var(--muted);margin-bottom:14px}.photo-caption{font-size:14px;color:var(--muted);margin:12px 0}.faq{padding:70px 0}.faq details{border-top:1px solid var(--line);padding:18px 0}.faq details:last-child{border-bottom:1px solid var(--line)}.faq summary{cursor:pointer;min-height:44px;padding:6px 28px 6px 0;font-size:18px;font-weight:700}.faq details p{padding-top:15px;max-width:850px;color:var(--muted)}.contact-band{padding:55px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.contact-inner{display:flex;justify-content:space-between;align-items:center;gap:35px}.contact-band h2{font-size:28px;margin-bottom:12px}.contact-band p{max-width:670px;color:var(--muted)}footer{padding:32px 0;font-size:14px;color:var(--muted)}footer p{margin-bottom:7px}.guide-top{padding:60px 0 46px;border-bottom:1px solid var(--line)}.breadcrumbs{font-size:14px;color:var(--muted);margin-bottom:28px}.guide-top h1{font-size:clamp(32px,4.2vw,56px);max-width:960px}.guide-grid{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:70px;padding:65px 0}.guide-body{min-width:0}.guide-body section{margin-bottom:55px}.guide-body section p{max-width:780px}.guide-body h2{font-size:28px}.guide-aside{border-left:1px solid var(--line);padding-left:25px;font-size:16px}.guide-aside h2{font-size:20px}.guide-aside a{display:block;padding:12px 0}.source-note{font-size:14px;color:var(--muted);border-top:1px solid var(--line);padding-top:22px}.guide-grid+.faq{padding-top:10px}.article-link{display:block;text-decoration:none}.article-link:hover h3{text-decoration:underline;text-underline-offset:7px}.article-link p{color:var(--muted)}.article-no{font-size:14px;color:var(--muted)}.columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:35px}.notice{padding:25px;border:1px solid var(--line);color:var(--muted);font-size:16px}.article-cover{max-height:440px;width:100%;object-fit:cover}.guide-end{padding:25px 0}.keyline{height:1px;background:var(--line);margin:35px 0}
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a:focus-visible,summary:focus-visible{outline:3px solid var(--ink);outline-offset:5px;box-shadow:0 0 0 8px var(--paper)}

.skip-link{position:absolute;left:12px;top:-80px;background:#fff;color:#171717;padding:12px;z-index:999}.skip-link:focus{top:12px}img{max-width:100%}.update-note{padding:12px 4%;font-size:14px;line-height:1.7}details summary{cursor:pointer}a:focus-visible,summary:focus-visible{outline:3px solid currentColor;outline-offset:4px}
