:root{--primary:#E85D75;--primary-dark:#D94A63;--accent:#F2A65A;--ink:#252833;--body:#34343C;--muted:#72727D;--bg:#FFF9F7;--bg-soft:#F6F1F0;--line:#eadfdd;--white:#fff;--shadow:0 14px 36px rgba(37,40,51,.08);--radius:22px;--radius-sm:14px;--shell:min(1160px,calc(100% - 40px))}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--body);line-height:1.72}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}button,input{font:inherit}.shell{width:var(--shell);margin-inline:auto}.skip-link{position:absolute;left:-9999px;top:8px}.skip-link:focus{left:8px;background:#fff;padding:8px 12px;z-index:1000}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,249,247,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.header-row{min-height:76px;display:flex;align-items:center;gap:24px}.brand{display:flex;align-items:center;gap:10px;min-width:210px}.brand img{width:46px;height:46px;object-fit:contain}.brand span{display:flex;flex-direction:column}.brand strong{font-size:1.15rem;color:var(--ink)}.brand small{font-size:.78rem;color:var(--muted)}.primary-nav{display:flex;gap:6px;align-items:center;flex:1}.primary-nav a{padding:9px 10px;border-radius:10px;font-size:.93rem}.primary-nav a:hover,.primary-nav a.active{background:var(--bg-soft);color:var(--primary-dark)}.search-open,.menu-toggle{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:999px;padding:9px 14px;cursor:pointer}.menu-toggle{display:none}.brand-landing{padding:64px 0 34px;text-align:center}.brand-landing .eyebrow,.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--primary-dark);font-weight:700;font-size:.84rem;letter-spacing:.05em}.brand-landing h1{font-size:clamp(2.25rem,5vw,4.8rem);line-height:1.08;margin:14px auto 16px;max-width:900px;color:var(--ink);letter-spacing:-.04em}.brand-landing .lead{max-width:780px;margin:0 auto;color:var(--muted);font-size:1.1rem}.brand-visual{margin:34px auto 0;max-width:760px;position:relative}.brand-visual img{width:100%;max-height:330px;object-fit:cover;border-radius:32px;box-shadow:var(--shadow)}.quick-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:28px auto 0}.quick-strip a{background:#fff;border:1px solid var(--line);padding:18px;border-radius:16px;text-align:left;transition:.2s}.quick-strip a:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#e6c9c7}.quick-strip strong{display:block;color:var(--ink);margin-bottom:5px}.quick-strip span{font-size:.9rem;color:var(--muted)}.section{padding:64px 0}.section.soft{background:var(--bg-soft)}.section.dark{background:var(--ink);color:#f8f4f3}.section.dark h2,.section.dark h3{color:#fff}.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:28px}.section-head h2{font-size:clamp(1.65rem,3vw,2.5rem);line-height:1.18;margin:8px 0 0;color:var(--ink)}.section-head p{max-width:620px;color:var(--muted);margin:0}.wide-band{display:grid;grid-template-columns:1.15fr .85fr;gap:38px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:28px;padding:28px}.wide-band img{border-radius:20px;min-height:320px;object-fit:cover}.wide-band h2{font-size:2rem;line-height:1.2;margin:8px 0 14px;color:var(--ink)}.prose p{margin:0 0 16px}.prose h2{color:var(--ink);margin:34px 0 12px;font-size:1.6rem}.prose h3{color:var(--ink);margin:24px 0 8px}.text-link{color:var(--primary-dark);font-weight:700;border-bottom:1px solid currentColor}.device-band{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px}.device-item{padding:0 0 18px;border-bottom:1px solid var(--line)}.device-item img{aspect-ratio:16/9;object-fit:cover;border-radius:18px;margin-bottom:14px}.device-item h3{margin:0 0 5px;color:var(--ink)}.device-item p{margin:0 0 10px;color:var(--muted)}.split{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}.panel h2,.panel h3{color:var(--ink)}.steps{list-style:none;padding:0;margin:0;counter-reset:steps}.steps li{counter-increment:steps;position:relative;padding:0 0 22px 54px}.steps li:before{content:counter(steps);position:absolute;left:0;top:0;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--primary);color:#fff;font-weight:800}.steps h3{margin:0 0 5px;color:var(--ink)}.steps p{margin:0;color:var(--muted)}.narrow{max-width:800px;margin-inline:auto}.notice{border-left:4px solid var(--accent);background:#fff;padding:18px 20px;border-radius:0 14px 14px 0}.topic-row{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line)}.topic-row:last-child{border-bottom:0}.topic-row img{border-radius:18px;aspect-ratio:16/10;object-fit:cover}.topic-row h3{margin:0 0 8px;color:var(--ink);font-size:1.3rem}.topic-row p{margin:0 0 10px;color:var(--muted)}.link-list{list-style:none;padding:0;margin:0}.link-list li{padding:17px 0;border-bottom:1px solid var(--line)}.link-list a{font-weight:800;color:var(--ink)}.link-list p{margin:4px 0 0;color:var(--muted)}.article-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}.article-card{display:grid;grid-template-columns:150px 1fr;gap:16px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px}.article-card img{width:150px;height:120px;border-radius:12px;object-fit:cover}.article-card h3{margin:2px 0 6px;font-size:1.07rem;color:var(--ink)}.article-card p{margin:0;color:var(--muted);font-size:.92rem}.meta-line{font-size:.82rem;color:var(--primary-dark);font-weight:700}.breadcrumb{padding:24px 0 0;color:var(--muted);font-size:.9rem}.breadcrumb a{color:var(--primary-dark)}.breadcrumb .sep{margin:0 8px;color:#b9a8a5}.page-hero{padding:34px 0 44px}.page-hero-grid{display:grid;grid-template-columns:1fr .72fr;gap:40px;align-items:center}.page-hero h1{font-size:clamp(2rem,4vw,3.6rem);line-height:1.12;color:var(--ink);margin:10px 0 16px}.page-hero p{color:var(--muted);font-size:1.06rem}.page-hero img{border-radius:26px;max-height:330px;width:100%;object-fit:cover}.index-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.index-item{background:#fff;padding:20px;border:1px solid var(--line);border-radius:16px}.index-item strong{display:block;color:var(--ink);margin-bottom:4px}.index-item p{margin:0;color:var(--muted)}.faq-list{border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;border:0;background:transparent;text-align:left;padding:20px 42px 20px 0;font-weight:800;color:var(--ink);position:relative;cursor:pointer}.faq-question:after{content:'+';position:absolute;right:6px;top:17px;font-size:1.35rem;color:var(--primary-dark)}.faq-item.open .faq-question:after{content:'−'}.faq-answer{padding:0 0 20px;color:var(--muted)}.faq-answer[hidden]{display:none!important}.article{padding:34px 0 70px}.article-header{max-width:820px;margin:0 auto 26px}.article-header h1{font-size:clamp(2rem,4vw,3.2rem);line-height:1.16;color:var(--ink);margin:8px 0 12px}.article-cover{max-width:920px;margin:0 auto 32px}.article-cover img{width:100%;max-height:470px;object-fit:cover;border-radius:28px}.article-body{max-width:760px;margin:auto;font-size:1.04rem}.article-body p{margin:0 0 20px}.related{max-width:760px;margin:42px auto 0;border-top:1px solid var(--line);padding-top:24px}.search-page{padding:38px 0 70px}.search-inline{display:flex;gap:10px;max-width:700px}.search-inline input{flex:1;border:1px solid var(--line);background:#fff;border-radius:12px;padding:12px 14px}.search-inline button,.button{display:inline-flex;align-items:center;justify-content:center;border:0;background:var(--primary-dark);color:#fff;border-radius:12px;padding:11px 16px;font-weight:800;cursor:pointer}.search-results{margin-top:26px}.search-result{padding:20px 0;border-bottom:1px solid var(--line)}.search-result h2{margin:0 0 6px;font-size:1.22rem}.search-result p{margin:0;color:var(--muted)}.search-modal{position:fixed;inset:0;z-index:100;background:rgba(37,40,51,.48);display:grid;place-items:start center;padding-top:12vh}.search-modal[hidden]{display:none!important}.search-dialog{width:min(640px,calc(100% - 32px));background:#fff;border-radius:22px;padding:26px;box-shadow:0 24px 70px rgba(0,0,0,.2);position:relative}.search-close{position:absolute;right:16px;top:12px;border:0;background:transparent;font-size:1.7rem;cursor:pointer}.search-form label{display:block;font-weight:700;margin-bottom:8px}.search-form>div{display:flex;gap:10px}.search-form input{flex:1;border:1px solid var(--line);border-radius:12px;padding:12px}.search-form button{border:0;border-radius:12px;background:var(--primary-dark);color:#fff;padding:0 18px;font-weight:800}.site-footer{background:#252833;color:#d8d4d3;padding:52px 0 20px}.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:32px}.footer-grid h2{font-size:.95rem;color:#fff;margin:0 0 10px}.footer-grid a{display:block;padding:4px 0;color:#d8d4d3;font-size:.92rem}.footer-grid p{color:#bdb9b7;max-width:390px}.footer-brand{font-size:1.3rem;color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:34px;padding-top:18px;display:flex;justify-content:space-between;font-size:.84rem;color:#aaa5a3}.back-top{position:fixed;right:22px;bottom:22px;width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow);cursor:pointer;display:none}.back-top.show{display:block}.error-page{text-align:center;padding:80px 0}.error-page h1{font-size:5rem;line-height:1;margin:0;color:var(--primary)}.tag{display:inline-block;background:var(--bg-soft);color:var(--primary-dark);border-radius:999px;padding:4px 10px;font-size:.8rem;font-weight:700;margin-right:6px}.mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.mini-card{padding:18px;border:1px solid var(--line);border-radius:16px;background:#fff}.mini-card h3{margin:0 0 6px;color:var(--ink)}.mini-card p{margin:0;color:var(--muted);font-size:.92rem}.callout{padding:22px 24px;border-radius:18px;background:linear-gradient(90deg,#fff 0,#fff8f5 100%);border:1px solid var(--line)}.callout strong{color:var(--ink)}@media(max-width:1024px){.primary-nav{position:absolute;top:76px;left:0;right:0;background:var(--bg);padding:14px 20px;border-bottom:1px solid var(--line);display:none;flex-wrap:wrap}.primary-nav.open{display:flex}.menu-toggle{display:inline-flex}.search-open{margin-left:auto}.quick-strip,.device-band{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.article-list{grid-template-columns:1fr}.page-hero-grid,.wide-band{grid-template-columns:1fr}.page-hero img{max-height:280px}}@media(max-width:768px){:root{--shell:min(100% - 28px,1160px)}.header-row{gap:10px}.brand{min-width:0}.brand small{display:none}.quick-strip,.device-band,.split,.index-list,.mini-grid{grid-template-columns:1fr}.section{padding:48px 0}.section-head{display:block}.section-head p{margin-top:10px}.wide-band{padding:18px}.topic-row{grid-template-columns:1fr}.topic-row img{max-height:240px;width:100%}.article-card{grid-template-columns:110px 1fr}.article-card img{width:110px;height:100px}.footer-grid{grid-template-columns:1fr 1fr}.brand-landing{padding-top:44px}}@media(max-width:600px){.search-open{padding:8px 11px}.brand img{width:40px;height:40px}.brand strong{font-size:1rem}.brand-landing h1{font-size:2.35rem}.quick-strip{grid-template-columns:1fr}.page-hero{padding-top:22px}.page-hero-grid{gap:22px}.article-card{grid-template-columns:1fr}.article-card img{width:100%;height:180px}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:5px}.search-form>div,.search-inline{flex-direction:column}.search-form button{padding:12px 18px}}@media(max-width:375px){:root{--shell:calc(100% - 22px)}.site-header .header-row{min-height:68px}.primary-nav{top:68px}.menu-toggle{padding:7px 10px}.search-open{font-size:.86rem}.brand span{display:none}.brand{min-width:auto}.brand-landing h1{font-size:2rem}.section{padding:40px 0}.panel{padding:20px}}