:root{color-scheme:light;--paper:#f7f5ef;--ink:#252638;--muted:#666575;--line:#e2dfd8;--accent:#58519b;--card:#fffefa;--soft:#eeebfa}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.8 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}a{color:var(--accent);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}a:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px;border-radius:4px}.skip{position:absolute;left:16px;top:-70px;background:var(--card);padding:8px 16px}.skip:focus{top:10px}.wrap{max-width:980px;margin:auto;padding:0 28px}header{border-bottom:1px solid var(--line)}.topbar{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-top:22px;padding-bottom:22px}.brand{display:flex;align-items:center;gap:12px;color:var(--ink);font-size:21px;font-weight:700;text-decoration:none}.mark{display:grid;place-items:center;width:42px;height:42px;border-radius:13px;background:#ede5b9;font-family:Georgia,serif;font-size:27px}nav{display:flex;gap:24px;font-size:14px}nav a{text-decoration:none}nav a[aria-current=page]{color:var(--ink);font-weight:700}main{padding:60px 0 72px}.eyebrow{font-size:13px;letter-spacing:.12em;color:var(--accent);font-weight:650;margin:0 0 12px}h1{font-size:clamp(32px,5vw,46px);line-height:1.25;letter-spacing:-.02em;margin:0 0 20px}h2{font-size:22px;line-height:1.5;margin:34px 0 12px}h3{font-size:17px;margin:0 0 8px}p{margin:0 0 16px}.lead{max-width:680px;color:var(--muted);font-size:18px}.meta{font-size:14px;color:var(--muted)}.panel{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:28px;margin:28px 0}.contact{display:flex;align-items:center;justify-content:space-between;gap:24px}.contact p:last-child{margin:0}.button{display:inline-block;background:var(--accent);color:white;border-radius:12px;padding:11px 22px;white-space:nowrap;font-weight:600;text-decoration:none}.button:hover{background:#474180}.grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.grid .panel{margin:0}.note{border-left:3px solid #b7aed7;padding:14px 20px;background:var(--soft);border-radius:0 12px 12px 0;margin:22px 0}.note p:last-child{margin:0}.article{max-width:780px}.article ol,.article ul{padding-left:24px;margin:10px 0 20px}.article li{margin-bottom:8px}.toc{display:flex;flex-wrap:wrap;gap:8px 20px;padding:20px 0;margin:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:14px}.toc a{flex:0 0 auto;white-space:nowrap}.faq{margin-top:28px;border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line);padding:20px 0}summary{font-weight:650;cursor:pointer;padding-right:16px}details p{margin:14px 0 0;color:var(--muted)}details ol{color:var(--muted);padding-left:24px;margin-bottom:0}footer{border-top:1px solid var(--line);padding:24px 0 36px;color:var(--muted);font-size:13px}.footerline{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}.email{overflow-wrap:anywhere}section[id]{scroll-margin-top:24px}@media(max-width:600px){.wrap{padding:0 20px}.topbar{padding-top:18px;padding-bottom:18px;gap:16px}.brand{font-size:18px}.mark{width:36px;height:36px;font-size:23px}nav{gap:14px;font-size:13px}main{padding:36px 0 48px}.panel{padding:22px;border-radius:16px}.contact{align-items:flex-start;flex-direction:column;gap:18px}.grid{grid-template-columns:1fr}.lead{font-size:16px}h2{font-size:20px}.toc{gap:8px 16px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}