*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#F4FBFF;color:#223044;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8}a{color:#0877C9;text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;cursor:pointer}img{max-width:100%}.site-header{position:sticky;top:0;z-index:100;background:#fff;box-shadow:0 1px 8px #14395813}.header-inner{height:70px;max-width:1160px;margin:auto;padding:0 24px;display:flex;gap:22px;align-items:center;justify-content:space-between;min-width:0}.logo{min-width:130px;display:flex;align-items:center;gap:8px;text-decoration:none;color:#0877C9;white-space:nowrap}.logo .logo-media{max-width:126px;height:38px;min-height:0}.logo-fallback{font-size:17px}.logo:has(img) .logo-fallback{display:none}.main-nav{display:flex;align-items:center;gap:23px;white-space:nowrap;min-width:0}.main-nav a{color:#223044;font-size:14px;padding:20px 0 17px;border-bottom:2px solid transparent}.main-nav a.active,.main-nav a:hover{color:#0877C9;border-color:#1CA8F6;text-decoration:none}.main-btn{display:inline-flex;align-items:center;justify-content:center;min-width:78px;height:40px;padding:0 18px;background:#0877C9;color:#fff;border-radius:999px;font-weight:700;white-space:nowrap}.main-btn:hover{text-decoration:none;background:#075f9c}.quick-bar{background:#EAF7FF;border-bottom:1px solid #d7edf9}.quick-inner{display:flex;align-items:center;gap:0;max-width:1160px;margin:auto;padding:0 24px;overflow-x:auto;white-space:nowrap;scrollbar-width:thin}.quick-inner a{font-size:13px;color:#5F7082;display:block;padding:10px 13px;flex-shrink:0}.quick-inner a+a{border-left:1px solid #d1e2ef}.quick-inner .active{color:#0877C9;font-weight:700}.main-wrap{width:min(1160px,calc(100% - 48px));margin:32px auto 55px;min-width:0}.page-head{margin:0 0 24px;border-left:4px solid #1CA8F6;padding-left:18px}.page-head h1{font-size:32px;line-height:1.35;margin:0 0 12px;color:#223044}.page-head p{margin:0;max-width:890px;color:#5F7082}.panel{background:#fff;border:1px solid #e2f0fa;border-radius:14px;padding:28px;margin:0 0 22px;min-width:0}.article-layout{display:grid;grid-template-columns:minmax(0,3fr) minmax(220px,1fr);gap:22px;align-items:start}.article h2,.section-title{font-size:23px;line-height:1.4;color:#0877C9;margin:0 0 13px}.article h2:not(:first-child){margin-top:27px}.article p,.panel p{font-size:16px;margin:0 0 16px;line-height:1.82}.article p:last-child{margin-bottom:0}.side-panel{position:static}.side-panel h2{font-size:18px;color:#223044;margin:0 0 12px}.side-panel a,.related a{display:block;padding:9px 0;border-bottom:1px solid #e8f1f7;font-size:14px}.kicker{font-size:13px;letter-spacing:.08em;color:#0877C9;font-weight:700}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.feature{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:center}.feature.reverse{grid-template-columns:.9fr 1.1fr}.feature h2{font-size:24px;line-height:1.4;margin:0 0 12px}.feature p{margin:0 0 12px}.compact-card{background:#fff;border:1px solid #e2f0fa;border-radius:13px;padding:20px;min-width:0}.compact-card h3{font-size:18px;margin:0 0 7px;line-height:1.5}.compact-card p{font-size:15px;margin:0 0 9px}.compact-card a{font-weight:700}.section-block{margin:34px 0}.section-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;gap:15px}.section-heading h2{font-size:24px;margin:0}.media{display:flex;align-items:center;justify-content:center;width:100%;max-width:100%;min-width:0;overflow:hidden;border-radius:12px;background:#EAF7FF}.media img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;object-position:center}.media-banner{height:260px}.media-wide{height:200px}.media-portrait{height:300px}.media-natural img{width:100%;height:auto;max-height:280px;object-fit:contain;margin:auto}.media-natural{min-height:130px}.media-placeholder{width:100%;height:100%;min-height:110px;background:linear-gradient(135deg,#eaf7ff,#dbeefa)}.logo-media{height:38px;min-height:38px}.logo-media .media-placeholder{min-height:32px}.brand-card .media{height:118px;margin-bottom:10px}.brand-card h3{font-size:15px;margin:0 0 6px}.brand-card p{font-size:13px;line-height:1.65}.list-article{padding:18px 0;border-bottom:1px solid #e6f1f8;display:flex;gap:20px}.list-article .num{font-size:26px;color:#1CA8F6;font-weight:700}.list-article h3{margin:0 0 5px}.list-article p{margin:0 0 5px}.table-index{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.index-item{padding:15px;background:#F4FBFF;border-radius:9px}.index-item strong{display:block}.faqs details{border-bottom:1px solid #e4eff7;padding:16px 0}.faqs summary{font-weight:700;cursor:pointer}.faqs p{margin:10px 0 0}.note{border-left:3px solid #1CA8F6;background:#EAF7FF;padding:13px 18px;border-radius:5px;font-size:14px;margin:18px 0}.site-footer{background:#082A46;color:#EAF8FF}.footer-inner{max-width:1160px;margin:auto;padding:44px 24px;display:grid;grid-template-columns:2fr repeat(3,1fr);gap:35px}.footer-inner h2{font-size:22px;margin:8px 0}.footer-inner h3{font-size:16px;margin:0 0 14px;color:#fff}.footer-inner p{font-size:14px;color:#d7eaf5}.footer-inner a{display:block;color:#EAF8FF;font-size:14px;padding:3px 0}.footer-brand .logo-media{width:120px}.footer-bottom{text-align:center;border-top:1px solid #34526a;padding:18px 20px;font-size:13px;color:#d5e9f4}.menu-toggle,.mobile-bottom,.mobile-drawer,.drawer-mask{display:none}.reading-links{display:flex;flex-wrap:wrap;gap:9px}.reading-links a{display:inline-block;background:#EAF7FF;padding:7px 12px;border-radius:7px;font-size:14px}section{min-width:0}@media(max-width:980px){.main-nav{display:none}.header-inner{height:59px;justify-content:space-between}.logo{margin:0 auto;min-width:0}.logo .logo-media{max-width:104px;height:30px}.logo-fallback{font-size:15px}.main-btn{height:36px;min-width:68px;padding:0 13px}.menu-toggle{display:flex;flex-direction:column;gap:5px;align-items:center;justify-content:center;width:38px;height:38px;border:0;background:none;padding:7px;flex-shrink:0}.menu-toggle span{display:block;width:22px;height:2px;background:#223044}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);height:100dvh;background:#fff;color:#223044;z-index:12000;overflow-y:auto;transform:translateX(-105%);visibility:hidden;pointer-events:none;transition:transform .2s ease,visibility .2s;padding:18px}.mobile-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-mask{display:block;position:fixed;inset:0;background:rgba(8,42,70,.42);z-index:11000;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s}.drawer-mask.is-visible{opacity:1;visibility:visible;pointer-events:auto}body.drawer-open{overflow:hidden}.drawer-head{display:flex;justify-content:space-between;align-items:center;font-weight:700;font-size:18px}.drawer-close{border:0;background:#eaf7ff;border-radius:8px;width:38px;height:38px;font-size:25px}.drawer-group{border-top:1px solid #e8f1f8;margin-top:14px;padding-top:12px}.drawer-group strong{display:block;color:#0877C9;margin-bottom:5px}.drawer-group a{display:block;min-height:40px;padding:8px;color:#223044}.drawer-group a.active{color:#0877C9;font-weight:700}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;z-index:90;background:#fff;border-top:1px solid #dcebf5;box-shadow:0 -2px 8px #10203012;height:60px;padding-bottom:env(safe-area-inset-bottom,0)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}.site-footer{padding-bottom:62px}.article-layout{grid-template-columns:minmax(0,1fr)}.side-panel{order:2}.footer-inner{grid-template-columns:repeat(2,minmax(0,1fr))}.main-wrap{width:calc(100% - 40px)}}@media(max-width:650px){.header-inner{padding:0 16px;gap:7px}.quick-inner{padding:0 10px}.main-wrap{width:calc(100% - 32px);margin:24px auto 38px}.page-head h1{font-size:26px}.panel{padding:20px 17px}.article h2,.section-title{font-size:20px}.article p,.panel p{font-size:15px}.grid-2,.grid-3,.feature,.feature.reverse{grid-template-columns:minmax(0,1fr)}.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.table-index{grid-template-columns:1fr}.feature{gap:16px}.feature .media{order:-1}.media-banner{height:180px}.media-wide{height:160px}.media-portrait{height:240px}.brand-card .media{height:95px}.compact-card{padding:15px}.compact-card h3{font-size:16px}.section-heading h2{font-size:21px}.footer-inner{gap:24px;padding:32px 16px}.list-article{gap:11px}.list-article .num{font-size:20px}}@media(max-width:360px){.logo .logo-media{max-width:88px}.logo-fallback{font-size:14px}.main-btn{padding:0 10px}.header-inner{padding:0 12px}.grid-4{gap:10px}.compact-card{padding:12px}}