*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#F6F4FC;color:#3A3E58;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{max-width:100%;display:block}.site-head{position:fixed;top:0;left:0;right:0;z-index:90}.nation-line{height:7px;background:linear-gradient(90deg,#7B6BB5,#6BA3D6);color:#fff;font-size:10px;overflow:visible}.nation-line__inner{max-width:1140px;height:30px;margin:0 auto;padding:0 18px;display:flex;align-items:flex-start;justify-content:space-between;position:relative;top:7px;pointer-events:none}.nation-line__inner span{display:block;background:#2A2D4A;padding:2px 8px;border-radius:0 0 6px 6px;pointer-events:auto}.text-trigger{border:0;background:#2A2D4A;color:#fff;cursor:pointer;padding:2px 10px;border-radius:0 0 6px 6px;pointer-events:auto}.nation-stage{height:48px;background:#fff;border-bottom:1px solid rgba(201,184,232,.7)}.nation-stage__inner{max-width:1140px;height:48px;margin:0 auto;padding:0 18px;display:flex;align-items:center;justify-content:space-between}.brand-link{display:inline-flex;align-items:center;min-height:44px}.brand-logo{height:24px;width:auto;max-width:190px;object-fit:contain}.brand-fallback{font-weight:800;color:#2A2D4A;letter-spacing:.04em}.stage-actions{display:flex;align-items:center;gap:10px}.menu-button,.app-button,.primary-btn,.secondary-btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;padding:0 16px;font-weight:700;cursor:pointer}.menu-button{border:1px solid #6BA3D6;background:#fff;color:#2A2D4A}.app-button,.primary-btn{border:1px solid #7B6BB5;background:#7B6BB5;color:#fff}.secondary-btn{border:1px solid #6BA3D6;background:#fff;color:#2A2D4A}.nation-nav{height:44px;background:#fff;border-bottom:1px solid rgba(42,45,74,.08)}.nation-nav__inner{height:44px;max-width:1140px;margin:0 auto;display:flex;align-items:center;justify-content:center;gap:18px}.nation-nav a{height:44px;display:flex;align-items:center;position:relative;font-weight:650;color:#3A3E58}.nation-nav a.is-active{color:#7B6BB5}.nation-nav a.is-active:after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:#6BA3D6}.nav-sep{width:1px;height:18px;background:#B8D4F0}.site-main{padding-top:99px;min-height:60vh}.wrap{max-width:1140px;margin:0 auto;padding:44px 18px}.hero{text-align:center;padding-top:36px}.hero-media,.media-slot{background:linear-gradient(145deg,#E8F2FA,#F0EBFA);border:1px solid rgba(42,45,74,.08);border-radius:16px;display:flex;align-items:center;justify-content:center;overflow:hidden}.hero-media{max-width:900px;min-height:180px;max-height:210px;margin:0 auto 24px}.hero-media img{width:100%;height:100%;max-height:210px;object-fit:contain;object-position:center}.hero-media:empty:before{content:"国产视频";font-size:30px;font-weight:800;color:#2A2D4A}.eyebrow{color:#7B6BB5;font-weight:800;letter-spacing:.08em}.hero h1,.page-head h1{font-size:clamp(28px,4vw,32px);line-height:1.3;margin:8px 0 16px;color:#2A2D4A}.hero p{max-width:780px;margin:0 auto;color:#5a5e78}.actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:22px}.section{padding:48px 0}.section.alt{background:#E8F2FA}.section-title{max-width:1140px;margin:0 auto 22px;padding:0 18px}.section-title h2{margin:0;color:#2A2D4A;font-size:26px}.section-title p{margin:6px 0 0;color:#6A6E88}.split{max-width:1140px;margin:0 auto;padding:0 18px;display:grid;grid-template-columns:1fr 1fr;gap:22px}.panel,.card,.content-block,.faq-item{background:#fff;border:1px solid rgba(42,45,74,.12);border-radius:14px;box-shadow:0 14px 34px rgba(42,45,74,.09)}.panel{padding:22px}.panel h2,.panel h3,.card h3,.content-block h2,.content-block h3{color:#2A2D4A;margin-top:0}.media-slot{height:170px;margin-bottom:16px}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.media-slot:empty:before{content:"影像资料";color:#6A6E88;font-weight:700}.feature-wide{max-width:960px;margin:0 auto;padding:0 18px}.feature-wide .panel{padding:24px}.feature-wide .media-slot{height:180px}.cards-4{max-width:1140px;margin:0 auto;padding:0 18px;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.card{padding:18px}.card .media-slot{height:155px}.card p{margin-bottom:0}.link-more{display:inline-flex;margin-top:12px;color:#7B6BB5;font-weight:800}.page-head{max-width:900px;margin:0 auto;padding:48px 18px 24px}.page-head p{color:#6A6E88;font-size:17px}.page-image{height:180px;margin-top:22px}.article-wrap{max-width:900px;margin:0 auto;padding:0 18px 54px}.content-block{padding:24px;margin:0 0 20px}.content-block p{margin:0 0 14px}.content-block p:last-child{margin-bottom:0}.content-block ul{padding-left:1.2em}.fact-box{border-left:4px solid #6BA3D6}.opinion-box{border-left:4px solid #7B6BB5}.tag-row{display:flex;gap:10px;flex-wrap:wrap}.tag{display:inline-flex;padding:6px 10px;border-radius:10px;background:#E8F2FA;color:#2A2D4A;font-weight:700}.app-showcase{display:grid;grid-template-columns:minmax(180px,300px) 1fr;gap:26px;align-items:center}.app-image{max-height:420px;object-fit:contain;margin:auto}.mark-image{width:64px;height:64px;object-fit:contain}.faq-list{display:grid;gap:14px}.faq-item{padding:20px}.faq-item h2{font-size:18px;margin:0 0 8px;color:#2A2D4A}.site-footer{background:#2A2D4A;color:#E8E4F6;padding:42px 0 80px}.footer-inner{max-width:1140px;margin:0 auto;padding:0 18px}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:26px}.footer-logo{height:24px;max-width:180px;object-fit:contain}.footer-brand div{display:flex;flex-direction:column}.footer-brand strong{color:#fff}.footer-brand span{font-size:12px;color:#C9B8E8}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.footer-grid h2{font-size:16px;color:#fff;margin:0 0 10px}.footer-grid a{display:block;color:#E8E4F6;margin:5px 0}.footer-note{border-top:1px solid rgba(232,228,246,.2);margin-top:26px;padding-top:18px;color:#C9B8E8}.copyright{color:#C9B8E8;font-size:14px}.overlay{position:fixed;inset:0;background:rgba(31,33,55,.42);z-index:120;opacity:0;transition:opacity .2s}.overlay.is-open{opacity:1}.nation-box,.search-layer{position:fixed;z-index:130;left:50%;transform:translateX(-50%) translateY(-8px);top:55px;background:#fff;border:1px solid rgba(42,45,74,.12);box-shadow:0 20px 50px rgba(42,45,74,.2);visibility:hidden;pointer-events:none;opacity:0;transition:.2s}.nation-box:before,.search-layer:before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:linear-gradient(90deg,#7B6BB5,#6BA3D6)}.nation-box{width:min(640px,calc(100% - 32px));height:360px;padding:18px;overflow:auto}.search-layer{width:min(420px,calc(100% - 32px));padding:18px}.nation-box.is-open,.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:translateX(-50%) translateY(0)}.drawer-head,.search-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.drawer-brand{display:flex;align-items:center;gap:10px;color:#2A2D4A}.drawer-brand img{height:22px;max-width:160px;object-fit:contain}.close-button{min-height:44px;border:1px solid #B8D4F0;background:#fff;color:#2A2D4A;border-radius:10px;padding:0 14px;cursor:pointer}.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.drawer-grid h2{font-size:15px;color:#7B6BB5;margin:0 0 8px}.drawer-grid a{display:block;padding:7px 0}.drawer-grid a strong{display:block;color:#2A2D4A}.drawer-grid a span{display:block;color:#6A6E88;font-size:12px}.search-look{border:1px solid rgba(42,45,74,.14);border-radius:12px;padding:13px 14px;color:#8A8EAA;background:#F6F4FC}.search-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.search-links a{padding:8px 10px;border:1px solid #B8D4F0;border-radius:10px;color:#2A2D4A}.panel-open{overflow:hidden}.mobile-bottom{display:none}a:focus-visible,button:focus-visible{outline:3px solid #6BA3D6;outline-offset:3px}a:hover{color:#7B6BB5}
@media(max-width:820px){.nation-nav{display:none}.site-main{padding-top:55px}.nation-line__inner{padding:0 16px}.nation-stage__inner{padding:0 16px}.brand-logo{max-width:150px}.stage-actions{gap:6px}.menu-button,.app-button{padding:0 12px}.split,.cards-4,.footer-grid,.app-showcase{grid-template-columns:1fr}.cards-4{gap:14px}.wrap{padding-left:16px;padding-right:16px}.nation-box{top:55px;height:60vh;width:calc(100% - 20px)}.drawer-grid{grid-template-columns:1fr 1fr}.search-layer{top:55px;width:calc(100% - 20px)}.mobile-bottom{position:fixed;z-index:100;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(5,1fr);min-height:50px;padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid rgba(42,45,74,.12)}.mobile-bottom a{min-height:50px;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:750}.mobile-bottom a.is-active{background:#7B6BB5;color:#fff}.site-footer{padding-bottom:calc(78px + env(safe-area-inset-bottom))}.page-head{padding-top:36px}.section{padding:38px 0}.hero{padding-top:28px}.hero-media{min-height:150px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid section{padding-right:10px}}
@media(max-width:520px){.nation-line__inner span{font-size:9px}.brand-fallback{font-size:16px}.stage-actions .app-button{font-size:13px}.drawer-grid{grid-template-columns:1fr}.nation-box{height:60vh}.footer-grid{grid-template-columns:1fr 1fr}.media-slot,.feature-wide .media-slot{height:160px}.card .media-slot{height:150px}.hero h1,.page-head h1{font-size:28px}.content-block{padding:20px}.app-showcase{gap:18px}}
