:root{--primary:#E85D75;--accent:#D94A63;--orange:#F2A65A;--ink:#252833;--text:#34343C;--muted:#72727D;--bg:#FFF9F7;--soft:#F6F1F0;--line:#E7DDDB;--white:#fff;--radius:22px;--shadow:0 18px 55px rgba(57,37,42,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75}img{max-width:100%;height:auto;display:block}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.skip-link{position:fixed;left:12px;top:-50px;background:var(--ink);color:#fff;padding:8px 12px;z-index:999}.skip-link:focus{top:12px}.wrap{width:min(1180px,calc(100% - 40px));margin:0 auto}.narrow{width:min(820px,calc(100% - 40px));margin:0 auto}.center{text-align:center}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,249,247,.96);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.header-inner{width:min(1240px,calc(100% - 32px));margin:auto;min-height:72px;display:flex;align-items:center;gap:20px}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;font-size:21px;white-space:nowrap}.brand img{width:42px;height:42px;object-fit:contain}.site-nav{display:flex;gap:4px;align-items:center;flex:1;justify-content:center}.site-nav a{color:var(--text);padding:9px 11px;border-radius:10px;font-size:14px}.site-nav a:hover,.site-nav a.is-active{background:var(--soft);color:var(--accent);text-decoration:none}.search-open,.menu-toggle,.search-close,.back-top{border:0;background:var(--ink);color:#fff;border-radius:999px;cursor:pointer}.search-open{padding:10px 14px}.menu-toggle{display:none;padding:9px 13px}.brand-entry{padding:72px 0 0}.eyebrow{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);font-weight:800;margin:0 0 12px}h1,h2,h3{color:var(--ink);line-height:1.25}h1{font-size:clamp(38px,6vw,70px);letter-spacing:-.035em;margin:0 0 22px}h2{font-size:clamp(27px,4vw,42px);margin:0 0 18px}h3{font-size:20px;margin:0 0 10px}.lead{font-size:19px;color:var(--muted);max-width:760px;margin:0 auto}.entry-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:28px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;border-radius:999px;font-weight:800}.btn.primary{background:var(--accent);color:#fff}.btn.secondary{background:var(--soft);color:var(--ink)}.entry-visual{margin-top:38px}.entry-visual img{width:100%;max-height:520px;object-fit:cover;border-radius:32px 32px 0 0;box-shadow:var(--shadow)}.quick-band{background:var(--ink);color:#fff;padding:34px 0 38px}.quick-band h2{color:#fff;font-size:24px}.quick-links{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.15)}.quick-links a{padding:20px 22px;border-right:1px solid rgba(255,255,255,.15);color:#fff;display:flex;flex-direction:column;gap:7px}.quick-links a:last-child{border-right:0}.quick-links strong{font-size:17px}.quick-links span{font-size:13px;color:#d7d4d7}.section{padding:76px 0}.split-intro{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}.split-intro img,.inline-wide,.wide-image{border-radius:var(--radius);box-shadow:var(--shadow)}.text-link{font-weight:800}.device-band{padding:72px 0;background:var(--soft)}.section-head{max-width:760px;margin-bottom:30px}.device-columns{display:grid;grid-template-columns:1fr 1fr;gap:28px}.device-columns article{background:var(--bg);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}.device-columns article>*:not(img){margin-left:24px;margin-right:24px}.device-columns img{width:100%;aspect-ratio:16/9;object-fit:cover}.device-columns h3{margin-top:22px}.device-columns a{display:inline-block;margin-bottom:24px;font-weight:800}.steps{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--line)}.step{display:grid;grid-template-columns:60px 1fr;gap:18px;padding:26px 18px;border-bottom:1px solid var(--line)}.step:nth-child(odd){border-right:1px solid var(--line)}.step>span{font-size:13px;font-weight:900;color:var(--accent)}.step p{margin:0;color:var(--muted)}.alt-section{background:var(--soft)}.community-strip{display:grid;grid-template-columns:.9fr 1.1fr;gap:46px;align-items:center}.community-strip img{border-radius:28px;aspect-ratio:16/10;object-fit:cover}.article-list{display:grid;border-top:1px solid var(--line)}.article-list a{display:grid;grid-template-columns:.75fr 1.25fr;gap:28px;padding:22px 0;border-bottom:1px solid var(--line);color:var(--text)}.article-list strong{color:var(--ink)}.article-list span{color:var(--muted)}.article-list.large a{padding:26px 0}.image-note{display:grid;grid-template-columns:1fr .8fr;gap:42px;align-items:center}.image-note img{border-radius:var(--radius)}.faq-list details{border-bottom:1px solid var(--line);padding:18px 0}.faq-list summary{cursor:pointer;font-weight:800;color:var(--ink);font-size:17px}.faq-answer{color:var(--muted)}.more-line{margin-top:28px}.compact-links{display:flex;flex-wrap:wrap;gap:10px}.compact-links a{background:var(--soft);color:var(--ink);border:1px solid var(--line);padding:10px 14px;border-radius:999px}.site-footer{background:var(--ink);color:#d8d6da;padding:56px 0 22px}.footer-grid{width:min(1180px,calc(100% - 40px));margin:auto;display:grid;grid-template-columns:2fr repeat(3,1fr);gap:34px}.site-footer h2{color:#fff;font-size:16px;margin-bottom:14px}.site-footer a{display:block;color:#f0ecef;margin:7px 0}.footer-brand{font-size:24px;font-weight:900}.footer-bottom{width:min(1180px,calc(100% - 40px));margin:34px auto 0;border-top:1px solid rgba(255,255,255,.12);padding-top:18px;display:flex;justify-content:space-between;gap:20px;font-size:13px}.inner{padding:24px 0 80px}.breadcrumb ol{list-style:none;padding:0;margin:8px 0 34px;display:flex;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--muted)}.breadcrumb li:not(:last-child)::after{content:'›';margin-left:8px;color:#aaa}.page-hero{padding:36px 0 42px}.page-hero.compact{padding-bottom:28px}.page-hero h1{font-size:clamp(36px,5vw,58px)}.page-hero p{font-size:18px;color:var(--muted)}.wide-feature{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center;padding:18px 0 54px}.wide-feature.reverse{grid-template-columns:.9fr 1.1fr}.wide-feature img{border-radius:var(--radius);box-shadow:var(--shadow)}.inner section{margin:48px 0}.number-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.number-list article{background:var(--soft);border:1px solid var(--line);padding:22px;border-radius:18px}.number-list span{display:inline-flex;width:32px;height:32px;border-radius:50%;align-items:center;justify-content:center;background:var(--accent);color:#fff;font-weight:900}.note-box,.alt-panel{background:var(--soft);border-left:4px solid var(--accent);padding:26px 28px;border-radius:0 16px 16px 0}.choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}.choice-grid article{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden}.choice-grid article>*:not(img){margin-left:22px;margin-right:22px}.choice-grid img{width:100%;aspect-ratio:16/9;object-fit:cover}.choice-grid h2{font-size:27px;margin-top:22px}.choice-grid a{display:inline-block;margin-bottom:24px;font-weight:800}.check-list,.plain-list{padding-left:22px}.check-list li,.plain-list li{margin:11px 0}.two-col-text{display:grid;grid-template-columns:1fr 1fr;gap:22px}.two-col-text>div{padding:20px;border-top:3px solid var(--orange);background:#fff}.timeline{border-left:3px solid var(--line);padding-left:24px}.timeline>div{display:grid;grid-template-columns:50px 1fr;gap:12px;align-items:start;margin:18px 0}.timeline span{font-weight:900;color:var(--accent)}.ordered li{margin:14px 0}.guide-hero{display:grid;grid-template-columns:.85fr 1.15fr;gap:34px;align-items:center}.guide-hero img{border-radius:var(--radius)}.article-body section{margin:42px 0}.page-search{background:var(--soft);padding:20px;border-radius:16px}.page-search label{display:block;font-weight:800;margin-bottom:8px}.search-row{display:flex;gap:8px}.search-row input{flex:1;min-width:0;border:1px solid var(--line);border-radius:12px;padding:12px 14px;font:inherit;background:#fff}.search-row button{border:0;border-radius:12px;padding:12px 18px;background:var(--accent);color:#fff;font-weight:800}.empty-state{padding:34px;background:var(--soft);border-radius:18px}.search-modal{position:fixed;inset:0;background:rgba(23,20,24,.55);z-index:100;display:grid;place-items:center;padding:20px}.search-modal[hidden]{display:none!important}.search-panel{width:min(560px,100%);background:var(--bg);border-radius:22px;padding:30px;position:relative;box-shadow:0 30px 100px rgba(0,0,0,.25)}.search-close{position:absolute;right:18px;top:18px;width:36px;height:36px;font-size:22px}.back-top{position:fixed;right:22px;bottom:22px;width:44px;height:44px;opacity:0;pointer-events:none;transition:.2s}.back-top.show{opacity:1;pointer-events:auto}@media(max-width:1024px){.site-nav{position:absolute;left:16px;right:16px;top:68px;background:var(--bg);border:1px solid var(--line);border-radius:16px;padding:10px;display:none;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}.site-nav.open{display:flex}.site-nav a{padding:10px 12px}.menu-toggle{display:inline-flex}.header-inner{justify-content:space-between}.search-open{margin-left:auto}.quick-links{grid-template-columns:1fr 1fr}.quick-links a:nth-child(2){border-right:0}.quick-links a:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.15)}.footer-grid{grid-template-columns:1.5fr 1fr 1fr}.footer-grid>div:last-child{grid-column:2/4}.number-list{grid-template-columns:1fr 1fr}.number-list article:last-child{grid-column:1/3}}@media(max-width:768px){.brand-entry{padding-top:52px}.wrap,.narrow{width:min(100% - 28px,1180px)}.entry-visual{width:100%}.entry-visual img{border-radius:24px 24px 0 0}.quick-links,.device-columns,.split-intro,.community-strip,.image-note,.wide-feature,.wide-feature.reverse,.choice-grid,.guide-hero,.two-col-text{grid-template-columns:1fr}.steps{grid-template-columns:1fr}.step:nth-child(odd){border-right:0}.article-list a{grid-template-columns:1fr;gap:5px}.number-list{grid-template-columns:1fr}.number-list article:last-child{grid-column:auto}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/3}.footer-grid>div:last-child{grid-column:auto}.site-header .brand span{display:none}.section{padding:56px 0}.page-hero{padding:30px 0}.search-open{font-size:0}.search-open::after{content:'搜索';font-size:14px}}@media(max-width:600px){h1{font-size:40px}.quick-links{grid-template-columns:1fr}.quick-links a{border-right:0!important;border-bottom:1px solid rgba(255,255,255,.15)}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child,.footer-grid>div:last-child{grid-column:auto}.footer-bottom{flex-direction:column}.entry-actions{align-items:stretch}.entry-actions .btn{width:100%}.search-row{flex-direction:column}.number-list{gap:12px}}@media(max-width:375px){.header-inner{width:calc(100% - 20px);gap:8px}.brand img{width:36px;height:36px}.search-open,.menu-toggle{padding:8px 10px}.wrap,.narrow{width:calc(100% - 22px)}h1{font-size:36px}.lead,.page-hero p{font-size:16px}}