*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#F4FBFF;color:#223044;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}a{color:#0877C9;text-decoration:none;touch-action:manipulation}a:hover{text-decoration:underline}img,svg{max-width:100%}.container{width:min(1160px,calc(100% - 40px));margin-inline:auto}.site-header{height:74px;background:#fff;border-bottom:1px solid #e0eef7;position:sticky;top:0;z-index:1000;box-shadow:0 2px 14px rgba(8,42,70,.04)}.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:26px}.brand-logo{display:inline-flex;align-items:center;flex:0 0 auto;white-space:nowrap;color:#0877C9;font-size:23px;font-weight:800;min-width:145px}.brand-logo img{height:36px;width:auto;max-width:180px;object-fit:contain}.main-nav{display:flex;align-items:center;justify-content:center;gap:clamp(12px,2.2vw,30px);flex:1;white-space:nowrap;min-width:0}.main-nav a{display:flex;align-items:center;justify-content:center;height:74px;border-bottom:2px solid transparent;color:#223044;font-weight:600;min-width:42px}.main-nav a.active{color:#0877C9;border-bottom-color:#1CA8F6}.register-btn,.primary-link{background:linear-gradient(135deg,#38C7FF 0%,#1CA8F6 48%,#0877C9 100%);color:#FFFFFF!important;border-radius:999px;min-height:40px;min-width:88px;display:inline-flex;align-items:center;justify-content:center;padding:7px 20px;font-weight:700;white-space:nowrap;box-shadow:0 4px 12px rgba(28,168,246,.16)}.register-btn:hover{text-decoration:none;filter:brightness(.97)}.menu-trigger{display:none}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:10px;top:80px;z-index:13000;background:#fff;padding:8px}.page{padding:35px 0 72px}.hero-intro{text-align:center;max-width:900px;margin:0 auto 24px}.eyebrow{color:#0877C9;font-weight:700;letter-spacing:.1em;font-size:13px;margin:0 0 7px}h1{font-size:36px;line-height:1.27;color:#0877C9;margin:0 0 16px;letter-spacing:.01em}h2{font-size:24px;line-height:1.35;color:#0877C9;margin:0 0 15px}h3{font-size:19px;color:#0877C9;line-height:1.4;margin:0 0 10px}p{margin:0 0 15px}.lead{font-size:17px;color:#5F7082;max-width:860px}.hero-intro .lead{margin-inline:auto}.poster-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:26px 0 30px}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:14px;background:#EAF7FF;aspect-ratio:16/9}.media > img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}.media-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;color:#5F7082;font-size:14px;background:linear-gradient(135deg,#EAF7FF,#d8f0ff)}.poster-grid .media{height:clamp(220px,22vw,260px);aspect-ratio:auto}.content-section{margin:24px 0;padding:28px 30px;border:1px solid #e3eff6;background:#fff;border-radius:20px;box-shadow:0 5px 20px rgba(8,42,70,.035)}.section-intro{max-width:820px}.three-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.feature-card,.brand-card,.small-card,.question-card{padding:22px;background:#fff;border:1px solid #dfedf7;border-radius:17px;min-width:0}.feature-card{background:#fafeff}.feature-card .card-no{color:#1CA8F6;font-size:14px;font-weight:800;letter-spacing:.08em}.feature-card p,.small-card p{color:#5F7082}.inline-links{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:12px}.text-link{font-weight:700;border-bottom:1px solid #b6e6ff}.channel-strip{display:flex;flex-wrap:wrap;gap:10px;padding:16px;border-radius:15px;background:#EAF7FF;margin:18px 0}.channel-strip a{background:#fff;border-radius:999px;padding:5px 14px;min-height:40px;display:inline-flex;align-items:center}.brand-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.brand-card .media{margin-bottom:13px}.brand-card p{color:#5F7082;font-size:15px}.brand-card h3{margin-bottom:8px}.brand-card .media{height:200px;aspect-ratio:auto}.article-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.article-grid article{border:1px solid #e1edf7;background:#fff;border-radius:18px;padding:24px}.article-grid article p{margin-bottom:0}.split{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:24px;align-items:center}.split .media{height:245px;aspect-ratio:auto}.question-list{display:grid;gap:11px}.question-list details{border:1px solid #dfedf7;background:#fff;border-radius:12px;padding:13px 18px}.question-list summary{cursor:pointer;color:#0877C9;font-weight:700;min-height:40px}.question-list details p{margin:7px 0 0}.note{padding:16px 20px;background:#EAF7FF;border-left:3px solid #1CA8F6;border-radius:10px;color:#36566d}.site-footer{background:#082A46;color:#EAF8FF;padding:40px 0 22px}.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}.site-footer h2{font-size:17px;color:#EAF8FF}.site-footer a{display:block;color:#EAF8FF;opacity:.92;margin:4px 0;min-height:32px}.footer-note{border-top:1px solid #33516a;padding-top:20px;margin-top:30px}.copyright{color:#EAF8FF;opacity:.75;font-size:14px}.mobile-bottom{display:none}.mobile-drawer,.drawer-mask{display:none}body.drawer-open{overflow:hidden}.drawer-heading{display:flex;align-items:center;justify-content:space-between;padding:15px 18px;border-bottom:1px solid #deedf7}.drawer-close{border:0;background:#EAF7FF;border-radius:9px;font-size:28px;color:#0877C9;width:40px;height:40px;cursor:pointer}.drawer-content{overflow-y:auto;height:calc(100% - 70px);padding:9px 20px 30px}.drawer-group{display:flex;flex-direction:column;padding:9px 0;border-bottom:1px solid #edf4f9}.drawer-group strong{color:#5F7082;font-size:13px;padding:5px 0}.drawer-group a{color:#223044;min-height:43px;display:flex;align-items:center;padding:4px 0}.menu-trigger{width:40px;height:40px;border:0;background:transparent;padding:9px;cursor:pointer;flex-direction:column;align-items:center;justify-content:space-around}.menu-trigger span{display:block;width:22px;height:2px;background:#0877C9;border-radius:2px}
@media(max-width:980px){
.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);background:#fff;color:#223044;z-index:12000;transform:translateX(-105%);transition:transform .2s ease}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-mask{display:none;position:fixed;inset:0;background:rgba(8,42,70,.42);z-index:11000;opacity:0;pointer-events:none}
.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}
.site-header{height:62px}.header-inner{display:grid;grid-template-columns:72px minmax(0,1fr) 72px;gap:7px}.menu-trigger{display:flex}.main-nav{display:none}.brand-logo{min-width:0}.header-inner>.brand-logo{justify-content:center;font-size:19px;overflow:hidden}.header-inner>.brand-logo img{height:28px;max-width:155px}.header-inner>.register-btn{min-height:36px;min-width:72px;padding:5px 12px;box-shadow:none}.page{padding:26px 0 105px}.mobile-bottom{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));position:fixed;bottom:0;left:0;right:0;z-index:9000;background:#fff;border-top:1px solid #d7eaf8;box-shadow:0 -4px 12px rgba(8,42,70,.06);padding-bottom:env(safe-area-inset-bottom,0px)}.mobile-bottom a{text-align:center;min-height:58px;display:flex;align-items:center;justify-content:center;color:#0877C9;font-weight:700}.footer-cols{gap:14px}.brand-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.poster-grid .media{height:165px}.brand-card .media{height:155px}.split .media{height:200px}}
@media(max-width:640px){.container{width:min(100% - 28px,1160px)}h1{font-size:29px}h2{font-size:21px}h3{font-size:18px}.lead{font-size:16px}.content-section{padding:21px 18px;margin:17px 0}.poster-grid{gap:9px;grid-template-columns:1fr;margin:20px 0}.poster-grid .media{height:165px}.three-cols,.article-grid,.split,.footer-cols{grid-template-columns:1fr}.brand-grid{grid-template-columns:1fr}.brand-card .media{height:165px}.split .media{height:160px}.site-footer{padding-bottom:85px}.brand-logo{font-size:18px}.hero-intro{text-align:left}.hero-intro .lead{margin:0}}
@media(max-width:380px){.header-inner{grid-template-columns:62px minmax(0,1fr) 72px;gap:3px}.header-inner>.brand-logo img{max-width:130px}.poster-grid .media{height:150px}}