:root{--bg:#FFF8F8;--paper:#fff;--soft:#FBE9EC;--ink:#351C23;--body:#4B3037;--muted:#76545F;--accent:#C9365B;--deep:#321C24;--line:#EDD8DE;--max:1160px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--body);font-family:system-ui,-apple-system,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;line-height:1.82;font-size:16px;overflow-x:hidden}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.container{width:min(var(--max),calc(100% - 40px));margin-inline:auto}.skip-link{position:absolute;left:-9999px;top:8px;background:#fff;padding:10px;z-index:99}.skip-link:focus{left:8px}.site-header{background:var(--paper);border-bottom:1px solid var(--line)}.masthead{min-height:82px;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand{display:flex;align-items:center;gap:12px;color:var(--ink);font-weight:800}.brand:hover{text-decoration:none}.brand-logo{max-width:160px;max-height:42px;width:auto;height:auto;display:block;object-fit:contain}.brand-fallback{font-size:26px;letter-spacing:.08em}.brand-en{font-size:13px;letter-spacing:.18em;color:var(--muted)}.masthead-side{display:flex;gap:18px;align-items:center;color:var(--muted);font-size:14px}.browse-toggle{display:none}.primary-nav{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.nav-row{display:flex;align-items:center;gap:4px;min-height:52px}.nav-row a,.nav-row button,.mobile-shortcuts a{padding:12px 13px;color:var(--body);border:0;background:transparent;font:inherit;white-space:nowrap}.nav-row a.is-current{color:var(--accent);box-shadow:inset 0 -2px var(--accent)}.all-toggle{margin-left:auto;cursor:pointer}.mobile-shortcuts{display:none}.all-nav{background:var(--soft);border-bottom:1px solid var(--line)}.nav-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;padding:26px 0}.nav-groups h2{font-size:15px;margin:0 0 10px;color:var(--ink)}.nav-groups a{display:block;padding:5px 0;color:var(--body)}main{min-height:50vh}.breadcrumb{font-size:14px;color:var(--muted);padding-top:24px}.breadcrumb a{color:var(--muted)}.page-head{padding:28px 0 22px;max-width:760px}.page-head h1,.hero h1{font-size:clamp(28px,3vw,38px);line-height:1.25;color:var(--ink);margin:0 0 14px}.page-head p,.hero p{margin:0;color:var(--muted)}.section{padding:48px 0;border-top:1px solid var(--line)}.section h2{font-size:clamp(21px,2.2vw,27px);line-height:1.35;color:var(--ink);margin:0 0 14px}.section h3{font-size:19px;color:var(--ink);margin:24px 0 8px}.section p{max-width:760px;margin:0 0 14px}.section .wide{max-width:none}.hero{padding:44px 0 52px}.hero .lede{max-width:760px;margin-bottom:20px}.hero-links{display:flex;gap:14px;flex-wrap:wrap}.hero-links a,.text-link{display:inline-flex;min-height:44px;align-items:center;padding:7px 0}.media-block{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,2fr);gap:32px;align-items:start}.media-block.reverse{grid-template-columns:minmax(0,2fr) minmax(0,3fr)}.image-wrap{display:flex;justify-content:center;align-items:center;background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px;min-width:0}.content-image{display:block;max-width:100%;height:auto;max-height:400px;width:auto;object-fit:contain;object-position:center}.banner-image{display:block;max-width:100%;max-height:320px;width:auto;height:auto;object-fit:contain;margin:auto}.small-image{display:block;max-width:240px;max-height:360px;width:auto;height:auto;object-fit:contain}.icon-image{display:block;max-width:44px;max-height:44px;width:auto;height:auto;object-fit:contain}.two-col{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}.three-col{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.index-list{list-style:none;padding:0;margin:0}.index-list li{padding:14px 0;border-top:1px solid var(--line)}.note{background:var(--soft);padding:20px 22px;border-radius:10px}.related{padding:38px 0 56px;border-top:1px solid var(--line)}.related h2{font-size:20px;color:var(--ink)}.related-links{display:flex;flex-wrap:wrap;gap:14px 24px}.site-footer{background:var(--deep);color:#f8ebef;padding:46px 0}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}.site-footer h2{font-size:15px;margin:0 0 10px;color:white}.site-footer a{display:block;color:#f4dce3;padding:4px 0}.footer-brandline{font-weight:800;font-size:20px}.footer-brandline span{font-size:12px;letter-spacing:.14em;margin-left:8px}.footer-brand p{font-size:14px;color:#e6ccd4}.rights-note{border-top:1px solid rgba(255,255,255,.12);padding-top:12px}.faq-item{padding:20px 0;border-top:1px solid var(--line)}.faq-item h2{font-size:19px;margin:0 0 8px}.steps{counter-reset:step;list-style:none;padding:0;max-width:760px}.steps li{counter-increment:step;padding:18px 0 18px 52px;border-top:1px solid var(--line);position:relative}.steps li:before{content:counter(step);position:absolute;left:0;top:18px;width:34px;height:34px;border-radius:50%;background:var(--soft);display:grid;place-items:center;color:var(--accent);font-weight:700}@media(max-width:900px){.media-block,.media-block.reverse,.two-col,.three-col{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.masthead-side{display:none}.nav-row a{display:none}.nav-row{min-height:0}.all-toggle{display:none}.browse-toggle{display:inline-flex;min-height:44px;align-items:center;background:transparent;border:1px solid var(--line);border-radius:8px;padding:0 14px;color:var(--ink)}.mobile-shortcuts{display:flex;gap:8px;min-height:48px;align-items:center}.mobile-shortcuts a{flex:1;text-align:center}.nav-groups{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){body{font-size:15.5px}.container{width:calc(100% - 32px)}.masthead{min-height:76px}.brand-logo{max-width:135px;max-height:38px}.brand-fallback{font-size:23px}.brand-en{display:none}.nav-groups{grid-template-columns:1fr 1fr;gap:20px}.section{padding:32px 0}.hero{padding:34px 0 38px}.content-image{max-height:300px}.banner-image{max-height:220px}.small-image{max-width:200px}.footer-grid{grid-template-columns:1fr}.media-block{gap:20px}}@media(max-width:380px){.nav-groups{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}