:root{--blue:#3f8fe5;--blue-dark:#2875c7;--blue-soft:#eaf4ff;--bg:#fff;--light:#f4f7fb;--light2:#eef3f9;--title:#1f2d3d;--text:#34495e;--muted:#6f7f90;--line:#d8e4f0;--line2:#e5edf5;--shadow:0 12px 32px rgba(43,97,153,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:var(--text);font-family:Arial,"Microsoft YaHei",sans-serif;line-height:1.7;overflow-x:hidden}body.menu-open{overflow:hidden}a{color:#2f83d8}.skip-link{position:absolute;left:-9999px;top:8px;background:#fff;padding:10px 14px;z-index:11000}.skip-link:focus{left:8px}.site-header{position:sticky;top:0;width:100%;z-index:9999;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line2);box-shadow:0 6px 20px rgba(43,97,153,.08)}.header-inner{max-width:1240px;min-height:70px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:18px}.site-logo{display:inline-flex;align-items:center;flex:0 0 auto}.site-logo img{display:block;max-height:44px;width:auto}.nav-core{display:flex;align-items:center;gap:10px;min-width:0}.nav-core a{color:var(--text);text-decoration:none;padding:8px 9px;border-radius:8px;white-space:nowrap;font-size:15px}.nav-core a:hover,.nav-core a.active{color:var(--blue-dark);background:var(--blue-soft)}.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}.main-btn,.secondary-btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 22px;border-radius:8px;text-decoration:none;font-weight:700;position:relative;z-index:2;pointer-events:auto;touch-action:manipulation;transition:.2s ease}.main-btn{color:#fff;background:var(--blue);box-shadow:0 10px 24px rgba(63,143,229,.22)}.main-btn:hover,.main-btn:focus{background:#2f7fd3;transform:translateY(-1px)}.secondary-btn{color:var(--blue-dark);background:#fff;border:1px solid #9fc9f5}.secondary-btn:hover,.secondary-btn:focus{background:var(--blue-soft)}.main-btn:focus-visible,.secondary-btn:focus-visible,.menu-btn:focus-visible,.drawer-close:focus-visible,a:focus-visible{outline:3px solid rgba(40,117,199,.28);outline-offset:3px}.menu-btn{width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:8px;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;z-index:3}.menu-btn span{width:18px;height:2px;background:var(--title);display:block}.drawer-mask{position:fixed;inset:0;background:rgba(31,45,61,.28);z-index:10000;opacity:0;transition:opacity .18s}.drawer-mask.show{opacity:1}.drawer{position:fixed;top:0;right:0;width:min(390px,88vw);height:100vh;background:#fff;z-index:10001;transform:translateX(105%);transition:transform .22s ease;box-shadow:-20px 0 48px rgba(31,45,61,.16);overflow-y:auto}.drawer.open{transform:translateX(0)}.drawer-head{height:70px;padding:0 20px;border-bottom:1px solid var(--line2);display:flex;align-items:center;justify-content:space-between}.drawer-close{width:44px;height:44px;border:0;background:var(--light);border-radius:8px;font-size:28px;cursor:pointer;color:var(--title)}.drawer-nav{display:grid;padding:12px 20px 30px}.drawer-nav a{padding:13px 10px;border-bottom:1px solid var(--line2);text-decoration:none;color:var(--text)}.drawer-nav a:hover{color:var(--blue-dark);background:var(--blue-soft)}
main{min-height:60vh}.container{width:min(1160px,calc(100% - 40px));margin:0 auto}.section{padding:82px 0}.section-light{background:var(--light)}.section-soft{background:var(--light2)}.section-title{margin:0 0 14px;color:var(--title);font-size:clamp(28px,4vw,42px);line-height:1.25}.section-lead{max-width:820px;color:var(--muted);font-size:17px;margin:0 0 34px}.eyebrow{display:inline-block;color:var(--blue-dark);background:var(--blue-soft);padding:5px 10px;border-radius:999px;font-weight:700;font-size:13px;margin-bottom:12px}.hero{position:relative;overflow:hidden;padding:74px 0 68px;background:linear-gradient(180deg,#fff 0%,#f8fbff 100%)}.hero:before{content:"";position:absolute;width:380px;height:380px;border-radius:50%;background:#eaf4ff;right:-120px;top:-140px}.hero-grid{position:relative;display:grid;grid-template-columns:1.06fr .94fr;gap:60px;align-items:center}.hero h1{font-size:clamp(38px,5vw,64px);line-height:1.12;color:var(--title);margin:0 0 18px;letter-spacing:-1px}.hero .subtitle{font-size:clamp(20px,2.4vw,28px);line-height:1.45;color:var(--blue-dark);font-weight:700;margin-bottom:18px}.hero p{font-size:17px;color:var(--muted);margin:0 0 26px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:20px}.hero-links{display:flex;gap:16px;flex-wrap:wrap;font-size:14px}.hero-links a{text-decoration:none}.hero-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:24px}.hero-points span{padding:11px 12px;border:1px solid var(--line);background:#fff;border-radius:8px;color:var(--text);font-size:14px}.hero-visual{display:flex;justify-content:center;position:relative}.hero-visual img{max-width:100%;height:auto;object-fit:contain;display:block;filter:drop-shadow(0 24px 36px rgba(43,97,153,.16))}.info-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.info-card,.category-card,.review-card,.faq-card,.article-card{background:#fff;border:1px solid var(--line);border-radius:8px;box-shadow:0 8px 24px rgba(43,97,153,.06)}.info-card{padding:24px}.info-card h3,.category-card h3,.article-card h2,.article-card h3{margin:0 0 10px;color:var(--title)}.info-card p,.category-card p{margin:0;color:var(--muted)}.category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px}.category-card{padding:28px;transition:.2s ease;min-height:184px;display:flex;flex-direction:column}.category-card:hover{transform:translateY(-3px);border-color:#79b3ee}.category-card .text-link{margin-top:auto;padding-top:16px;text-decoration:none;font-weight:700}.category-card.wide{grid-column:1/-1;min-height:auto}.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}.split.reverse .feature-image{order:2}.feature-image img,.content-img{max-width:100%;height:auto;object-fit:contain;display:block}.copy p{margin:0 0 16px}.copy ul{padding-left:20px}.copy li{margin-bottom:8px}.section-actions{margin-top:22px;display:flex;gap:12px;flex-wrap:wrap}.dual-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}.article-card{padding:30px}.review-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.review-card{padding:24px}.review-card p{margin:0;color:var(--text)}.review-card small{display:block;margin-top:14px;color:var(--muted)}.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.faq-card{padding:22px}.faq-card h3{margin:0 0 8px;color:var(--title);font-size:18px}.faq-card p{margin:0;color:var(--muted)}.risk-box{padding:28px;border:1px solid #9fc9f5;background:#f7fbff;border-radius:8px}.risk-box h2,.risk-box h3{margin-top:0;color:var(--title)}
.page-hero{padding:64px 0 46px;background:linear-gradient(180deg,#f8fbff,#fff)}.page-hero h1{margin:0 0 14px;color:var(--title);font-size:clamp(34px,5vw,52px);line-height:1.2}.page-hero p{max-width:860px;margin:0;color:var(--muted);font-size:17px}.content-wrap{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:42px;align-items:start}.article{font-size:16px}.article h2{color:var(--title);font-size:28px;margin:42px 0 14px}.article h3{color:var(--title);font-size:21px;margin:30px 0 10px}.article p{margin:0 0 16px}.article ul,.article ol{padding-left:22px}.article li{margin-bottom:9px}.article .note{background:var(--blue-soft);border-left:4px solid var(--blue);padding:16px 18px;margin:22px 0;border-radius:0 8px 8px 0}.side-nav{position:sticky;top:94px;border:1px solid var(--line);background:#fff;border-radius:8px;padding:20px}.side-nav h3{margin:0 0 10px;color:var(--title)}.side-nav a{display:block;text-decoration:none;padding:8px 0;border-bottom:1px solid var(--line2);color:var(--text)}.side-nav a:last-child{border-bottom:0}.side-nav a:hover{color:var(--blue-dark)}.qa-list{display:grid;gap:16px}.qa-item{border:1px solid var(--line);border-radius:8px;padding:22px;background:#fff}.qa-item h2{font-size:20px;margin:0 0 10px}.qa-item p{margin:0}.news-list{display:grid;gap:18px}.news-item{border:1px solid var(--line);background:#fff;border-radius:8px;padding:24px}.news-item .tag{display:inline-block;color:var(--blue-dark);background:var(--blue-soft);padding:3px 8px;border-radius:999px;font-size:13px;margin-bottom:8px}.news-item h2{margin:0 0 10px;font-size:22px;color:var(--title)}.news-item p{margin:0;color:var(--muted)}.feature-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.feature-list .article-card{min-height:200px}.steps{counter-reset:step;display:grid;gap:16px}.step{position:relative;border:1px solid var(--line);border-radius:8px;padding:22px 22px 22px 70px;background:#fff}.step:before{counter-increment:step;content:counter(step);position:absolute;left:20px;top:22px;width:34px;height:34px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:700}.cta-strip{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:28px;border:1px solid #9fc9f5;background:var(--blue-soft);border-radius:8px}.cta-strip h2{margin:0 0 8px}.cta-strip p{margin:0;color:var(--muted)}
.site-footer{background:#438ddf;color:#fff;padding:56px 0 18px}.footer-inner{width:min(1160px,calc(100% - 40px));margin:0 auto;display:grid;grid-template-columns:1.1fr 1.9fr;gap:60px}.footer-brand p{max-width:430px;color:rgba(255,255,255,.9)}.footer-logo img{background:#fff;border-radius:6px;padding:5px;max-height:46px}.footer-links{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.footer-links h3{margin:0 0 12px;color:#fff;font-size:17px}.footer-links a{display:block;color:#fff;text-decoration:none;padding:4px 0;opacity:.95}.footer-links a:hover{text-decoration:underline}.footer-risk,.footer-copy{width:min(1160px,calc(100% - 40px));margin:0 auto}.footer-risk{border-top:1px solid rgba(255,255,255,.28);padding-top:24px;margin-top:36px;color:rgba(255,255,255,.9);font-size:14px}.footer-copy{padding-top:16px;text-align:center;font-size:13px;color:rgba(255,255,255,.78)}
@media(max-width:1040px){.nav-core{gap:2px}.nav-core a{font-size:14px;padding:7px 6px}.hero-grid{gap:36px}.info-grid{grid-template-columns:repeat(2,1fr)}.review-grid{grid-template-columns:repeat(2,1fr)}.content-wrap{grid-template-columns:1fr}.side-nav{position:static}.feature-list{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){.nav-core{display:none}.header-inner{min-height:62px;padding:0 16px}.site-logo img{max-height:36px}.header-download{min-height:44px;padding:0 15px;font-size:14px}.drawer-head{height:62px}.hero{padding:48px 0}.hero-grid,.split,.dual-grid{grid-template-columns:1fr}.split.reverse .feature-image{order:0}.hero-visual{margin-top:12px}.hero-visual img{max-width:520px;width:100%}.section{padding:62px 0}.category-grid{grid-template-columns:repeat(2,1fr);gap:22px}.category-card.wide{grid-column:1/-1}.faq-grid{grid-template-columns:1fr}.footer-inner{grid-template-columns:1fr;gap:34px}.cta-strip{align-items:flex-start;flex-direction:column}}
@media(max-width:560px){.container,.footer-inner,.footer-risk,.footer-copy{width:min(100% - 32px,1160px)}.header-actions{gap:6px}.header-download{padding:0 12px}.hero h1{font-size:38px}.hero-points{grid-template-columns:1fr}.info-grid,.category-grid,.review-grid,.feature-list{grid-template-columns:1fr}.category-card.wide{grid-column:auto}.category-grid{gap:18px}.section{padding:52px 0}.section-title{font-size:30px}.dual-grid{gap:20px}.article-card{padding:22px}.page-hero{padding:46px 0 34px}.article h2{font-size:25px}.footer-links{grid-template-columns:1fr 1fr}.menu-btn{width:44px;min-width:44px}.main-btn,.secondary-btn{min-height:44px}.hero-actions .main-btn,.hero-actions .secondary-btn{flex:1 1 auto}.cta-strip .main-btn{width:100%}}
@media(max-width:380px){.site-logo img{max-width:104px}.header-download{font-size:13px;padding:0 10px}.footer-links{grid-template-columns:1fr}}