:root{--blue:#3f8fe5;--blue2:#2875c7;--light:#f4f7fb;--light2:#eef3f9;--ink:#1f2d3d;--text:#34495e;--muted:#6f7f90;--line:#d8e4f0;--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}a{color:#2f83d8}img{max-width:100%}.wrap{width:min(1160px,calc(100% - 40px));margin:0 auto}.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 #e5edf5;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;white-space:nowrap}.nav-core a{color:var(--text);text-decoration:none;padding:8px 10px;border-radius:8px;font-size:15px}.nav-core a:hover,.nav-core a.active{color:var(--blue2);background:#eaf4ff}.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}.main-btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 22px;color:#fff;background:var(--blue);border-radius:9px;text-decoration:none;box-shadow:0 10px 24px rgba(63,143,229,.22);position:relative;z-index:2;pointer-events:auto;touch-action:manipulation;border:1px solid transparent;font-weight:700;transition:.2s}.main-btn:hover{background:#2f7fd3;transform:translateY(-1px)}.main-btn:focus-visible,.text-btn:focus-visible,.menu-toggle:focus-visible{outline:3px solid rgba(63,143,229,.35);outline-offset:3px}.menu-toggle{width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;display:grid;place-content:center;gap:5px;cursor:pointer}.menu-toggle span{width:20px;height:2px;background:var(--ink);display:block}.drawer-mask{position:fixed;inset:0;background:rgba(31,45,61,.35);opacity:0;transition:.2s;z-index:10000}.drawer-mask.show{opacity:1}.site-drawer{position:fixed;top:0;right:0;width:min(360px,88vw);height:100vh;background:#fff;z-index:10001;transform:translateX(102%);transition:transform .25s ease;box-shadow:-16px 0 50px rgba(31,45,61,.16);overflow-y:auto}.site-drawer.open{transform:none}.drawer-open{overflow:hidden}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid #e5edf5}.drawer-close{border:0;background:#eef3f9;border-radius:10px;width:42px;height:42px;font-size:28px;cursor:pointer;color:var(--ink)}.drawer-nav{padding:10px 18px 30px}.drawer-nav a{display:block;padding:13px 10px;border-bottom:1px solid #eef3f9;text-decoration:none;color:var(--text)}
.hero{padding:78px 0 58px;background:linear-gradient(180deg,#fff 0%,#f7fbff 100%);position:relative;overflow:hidden}.hero:after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:#eaf4ff;right:-150px;top:-160px;z-index:0}.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:54px;align-items:center;position:relative;z-index:1}.eyebrow{display:inline-flex;padding:6px 10px;background:#eaf4ff;color:var(--blue2);border-radius:999px;font-size:14px;font-weight:700;margin-bottom:14px}.hero h1,.page-hero h1{font-size:clamp(38px,5vw,60px);line-height:1.12;margin:0 0 18px;color:var(--ink);letter-spacing:-1px}.hero-sub{font-size:22px;color:var(--blue2);font-weight:700;margin:0 0 16px}.hero p{font-size:17px;color:#5b6d80}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0 20px}.text-btn{display:inline-flex;align-items:center;min-height:44px;padding:0 16px;border:1px solid var(--line);border-radius:9px;text-decoration:none;background:#fff;font-weight:700}.hero-links{display:flex;flex-wrap:wrap;gap:18px;font-size:14px}.hero-points{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 18px;margin:24px 0 0;padding:0;list-style:none}.hero-points li{padding-left:19px;position:relative;color:#52677b}.hero-points li:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--blue);position:absolute;left:0;top:.72em}.hero-visual{display:flex;justify-content:center}.hero-visual img{width:min(430px,100%);height:auto;object-fit:contain;display:block;filter:drop-shadow(0 24px 28px rgba(43,97,153,.18))}
.section{padding:72px 0}.section-light{background:var(--light)}.section-head{max-width:760px;margin-bottom:30px}.section-title{margin:0 0 12px;font-size:clamp(28px,3.2vw,40px);line-height:1.25;color:var(--ink)}.section-desc{margin:0;color:var(--muted);font-size:16px}.info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.info-card,.review-card,.faq-card,.category-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,.review-card h3,.faq-card h3{margin:0 0 9px;color:var(--ink)}.info-card p,.category-card p,.review-card p,.faq-card p{margin:0;color:#607487}.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.category-card{padding:26px;transition:.2s}.category-card:hover{border-color:var(--blue);transform:translateY(-3px)}.category-card.full{grid-column:1/-1}.category-card .text-link{display:inline-block;margin-top:14px;text-decoration:none;font-weight:700}.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}.split.reverse .feature-image{order:2}.feature-image{display:flex;justify-content:center}.feature-image img,.content-img{max-width:100%;height:auto;object-fit:contain;display:block}.prose p{margin:0 0 15px}.prose h2,.prose h3{color:var(--ink);line-height:1.35}.prose h2{font-size:31px;margin:0 0 16px}.prose h3{font-size:21px;margin:28px 0 10px}.prose ul{padding-left:20px}.notice{border-left:4px solid var(--blue);background:#eaf4ff;padding:16px 18px;border-radius:0 8px 8px 0;color:#3d5871;margin:22px 0}.risk{border:1px solid #d8e4f0;background:#f8fbff;padding:18px;border-radius:8px;margin-top:22px}.dual{display:grid;grid-template-columns:1fr 1fr;gap:30px}.dual-card{border:1px solid var(--line);border-radius:8px;background:#fff;padding:26px}.dual-card img{max-height:220px;margin:0 auto 20px;display:block}.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.review-card{padding:22px}.review-card .who{font-weight:700;color:var(--blue2);margin-top:14px}.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}.faq-card{padding:22px}.page-hero{padding:64px 0 42px;background:linear-gradient(180deg,#f7fbff,#fff)}.page-hero h1{font-size:46px}.breadcrumbs{font-size:14px;color:#8392a1;margin-bottom:12px}.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:42px;align-items:start}.article{max-width:820px}.side-card{position:sticky;top:96px;border:1px solid var(--line);background:#fff;border-radius:8px;padding:20px;box-shadow:0 8px 24px rgba(43,97,153,.05)}.side-card h3{margin-top:0;color:var(--ink)}.side-card a{display:block;padding:9px 0;border-bottom:1px solid #edf2f7;text-decoration:none}.announcement{padding:22px;border:1px solid var(--line);border-radius:8px;background:#fff;margin-bottom:16px}.announcement .tag{font-size:13px;color:var(--blue2);font-weight:700}.announcement h2{font-size:23px;margin:5px 0 10px}.steps{counter-reset:step;display:grid;gap:14px}.step{counter-increment:step;border:1px solid var(--line);border-radius:8px;padding:20px 20px 20px 64px;position:relative}.step:before{content:counter(step);position:absolute;left:18px;top:18px;width:30px;height:30px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-content:center;font-weight:700}.faq-stack details{border:1px solid var(--line);border-radius:8px;padding:0 18px;background:#fff;margin:0 0 12px}.faq-stack summary{cursor:pointer;font-weight:700;color:var(--ink);padding:18px 28px 18px 0}.faq-stack details p{padding:0 0 18px;margin:0}.site-footer{background:#438ddf;color:#fff;padding:50px 0 22px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:34px}.footer-brand img{max-height:42px;filter:brightness(0) invert(1)}.footer-grid h3{margin:0 0 12px;color:#fff}.footer-grid a{display:block;color:#fff;text-decoration:none;opacity:.92;margin:8px 0}.footer-brand p{opacity:.9;max-width:520px}.footer-risk{border-top:1px solid rgba(255,255,255,.25);margin-top:30px;padding-top:22px;font-size:14px;opacity:.94}.footer-copy{margin-top:16px;font-size:13px;opacity:.8}.center{text-align:center}.mt20{margin-top:20px}.mb0{margin-bottom:0}
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@media(max-width:768px){.header-inner{min-height:62px;padding:0 16px;gap:10px}.site-logo img{max-height:36px}.header-download{min-height:44px;padding:0 14px;font-size:14px}.hero{padding:46px 0}.wrap{width:min(100% - 32px,1160px)}.hero-grid,.split,.dual{grid-template-columns:1fr;gap:30px}.split.reverse .feature-image{order:0}.hero h1,.page-hero h1{font-size:36px}.hero-sub{font-size:19px}.hero-visual img{width:min(340px,88%)}.hero-points{grid-template-columns:1fr}.section{padding:52px 0}.info-grid,.category-grid,.reviews,.faq-list{grid-template-columns:1fr;gap:16px}.category-card.full{grid-column:auto}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.page-hero{padding:44px 0 28px}.dual-card{padding:20px}}
@media(max-width:460px){.wrap{width:min(100% - 32px,1160px)}.header-download{padding:0 11px}.site-logo img{max-width:118px}.menu-toggle{width:44px;height:44px}.hero-actions{display:grid}.hero-actions .main-btn,.hero-actions .text-btn{width:100%}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.section-title{font-size:29px}.prose h2{font-size:27px}}