*{box-sizing:border-box}
html{scroll-behavior:smooth;background:#EAF2FB}
body{margin:0;background:#EAF2FB;color:#24364F;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.82;overflow-x:hidden}
a{color:#137CD8;text-decoration:none}a:hover{text-decoration:underline}
button,a{touch-action:manipulation}.site-header{position:sticky;top:0;z-index:9000;width:100%;background:#FFFFFF;border-bottom:1px solid rgba(47,168,247,.18)}
.header-inner{max-width:1160px;min-height:68px;margin:0 auto;padding:0 18px;display:flex;align-items:center;justify-content:space-between;gap:14px}
.site-logo{display:flex;align-items:center;min-width:150px}.site-logo img{display:block;height:36px;width:auto;max-width:150px;object-fit:contain}.logo-placeholder{display:inline-flex;align-items:center;justify-content:center;min-width:122px;height:36px;padding:0 14px;border-radius:10px;background:#EDF5FF;color:#137CD8;font-weight:800;letter-spacing:.06em}
.nav-core{display:flex;align-items:center;justify-content:center;gap:2px;min-width:0}.nav-core a{color:#24364F;padding:8px 12px;font-weight:700;text-decoration:none;white-space:nowrap}.nav-core a.is-current,.nav-core a:hover{color:#137CD8;background:#F4F8FF;border-radius:999px}
.main-btn{display:inline-flex;align-items:center;justify-content:center;height:40px;min-width:92px;padding:0 18px;background:linear-gradient(135deg,#45C7FF 0%,#2FA8F7 48%,#137CD8 100%);color:#FFFFFF;border-radius:999px;text-decoration:none;font-weight:700;box-shadow:0 10px 22px rgba(19,124,216,.18);touch-action:manipulation}.main-btn:hover{color:#fff;text-decoration:none;filter:brightness(.98)}.header-action{flex:0 0 auto}.menu-toggle{display:none}
.channel-bar{background:#FFFFFF;border-bottom:1px solid rgba(47,168,247,.12)}.channel-inner{max-width:1160px;margin:0 auto;padding:0 18px;display:flex;align-items:center;gap:24px;overflow-x:auto;white-space:nowrap;scrollbar-width:thin}.channel-inner a{display:inline-flex;align-items:center;height:46px;color:#5D718A;font-size:14px;font-weight:700;border-bottom:2px solid transparent}.channel-inner a:hover,.channel-inner a.is-current{color:#137CD8;border-bottom-color:#137CD8;text-decoration:none}
.site-main{min-height:70vh;padding:0 56px 0 0}.page-shell{max-width:1160px;margin:0 auto;padding:28px 18px 52px}.breadcrumbs{font-size:14px;color:#5D718A;margin:0 0 18px}.breadcrumbs a{color:#5D718A}.article{max-width:820px;margin:0 auto}.article.wide{max-width:1160px}.article h1{font-size:36px;line-height:1.25;color:#137CD8;margin:0 0 18px}.article h2{font-size:24px;line-height:1.35;color:#137CD8;margin:30px 0 10px}.article p{font-size:17px;margin:0 0 16px}.lead{font-size:18px;color:#24364F}.subtle{color:#5D718A}.section-card{background:#fff;border:1px solid rgba(47,168,247,.14);border-radius:12px;padding:24px;box-shadow:0 10px 24px rgba(19,124,216,.10);margin:22px 0}.note-strip{background:#F4F8FF;border:1px solid rgba(47,168,247,.14);border-radius:12px;padding:18px 20px;color:#38516d;margin:24px 0}.text-links{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 0}.text-links a{display:inline-flex;min-height:40px;align-items:center;padding:7px 12px;border-radius:10px;background:#F7FBFF;border:1px solid rgba(47,168,247,.14);font-weight:700}.text-links a:hover{background:#EDF5FF;text-decoration:none}
.hero{display:grid;grid-template-columns:40% 60%;gap:26px;align-items:center;padding:32px 0}.hero-copy h1{font-size:40px;line-height:1.22;color:#137CD8;margin:0 0 16px}.hero-copy p{font-size:18px;margin:0 0 18px}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:12px;background:#EDF5FF;aspect-ratio:16/9;z-index:1}.media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}.media-placeholder{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(145deg,#EDF5FF,#F7FBFF);color:#6a86a1;font-size:14px}.hero-media{min-height:260px}.static-gallery{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin:22px 0 30px}.static-gallery .media{height:140px;aspect-ratio:auto}.directory-list{display:grid;gap:10px;margin:20px 0}.directory-row{display:grid;grid-template-columns:180px 1fr;gap:20px;align-items:start;background:#fff;border:1px solid rgba(47,168,247,.14);border-radius:12px;padding:18px 20px}.directory-row strong{color:#137CD8;font-size:18px}.split{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:center;margin:28px 0}.split.reverse .split-copy{order:1}.split.reverse .media{order:2}.list-steps{margin:0;padding-left:22px}.list-steps li{margin:8px 0}.mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:18px 0}.mini-grid>div{background:#fff;border:1px solid rgba(47,168,247,.14);border-radius:12px;padding:18px}.mini-grid h2,.mini-grid h3{margin:0 0 8px;color:#137CD8;font-size:19px}.topic-index{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.topic-index a{background:#fff;border:1px solid rgba(47,168,247,.14);border-radius:12px;padding:16px;font-weight:700}.topic-index a:hover{background:#F7FBFF;text-decoration:none}
.float-tools{position:fixed;right:12px;top:50%;transform:translateY(-50%);z-index:8000;display:flex;flex-direction:column;gap:8px;width:110px}.float-tools>a,.float-tools>button{min-height:40px;border:1px solid rgba(47,168,247,.18);border-radius:10px;background:#fff;color:#137CD8;font:inherit;font-weight:700;padding:8px;text-align:center;cursor:pointer}.float-tools>.main-btn{border:0;color:#fff}.float-tools a:hover{text-decoration:none;background:#F7FBFF}.float-tools>.main-btn:hover{background:linear-gradient(135deg,#45C7FF 0%,#2FA8F7 48%,#137CD8 100%)}
.site-footer{background:#102B46;color:#EAF6FF;padding:42px 18px 92px}.footer-grid{max-width:1160px;margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}.footer-grid h2{font-size:18px;color:#fff;margin:0 0 10px}.footer-grid a{display:block;color:#EAF6FF;margin:6px 0}.footer-grid p{max-width:420px;color:#cfe5f8}.footer-logo img{height:36px;width:auto;max-width:150px;object-fit:contain}.footer-mark{background:#173a5c;color:#EAF6FF}.footer-bottom{max-width:1160px;margin:26px auto 0;padding-top:18px;border-top:1px solid rgba(234,246,255,.16);color:#cfe5f8;font-size:14px}.mobile-bottom{display:none}.mobile-drawer,.drawer-mask{display:none}
.faq-list details{background:#fff;border:1px solid rgba(47,168,247,.14);border-radius:12px;padding:16px 18px;margin:12px 0}.faq-list summary{cursor:pointer;color:#137CD8;font-weight:800}.faq-list details p{margin:10px 0 0}.plain-faq .qa{background:#fff;border:1px solid rgba(47,168,247,.14);border-radius:12px;padding:18px 20px;margin:14px 0}.plain-faq .qa h2{font-size:20px;margin:0 0 8px}.plain-faq .qa p{margin:0}.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:980px){
  .site-main{padding-right:0;padding-bottom:68px}.header-inner{min-height:64px;display:grid;grid-template-columns:88px 1fr 98px;gap:8px;padding:0 12px}.nav-core{display:none}.site-logo{justify-content:center;min-width:0}.site-logo img{height:34px;max-width:132px}.header-action{min-width:88px;padding:0 12px}.menu-toggle{display:inline-flex;align-items:center;justify-content:center;min-height:40px;border:0;background:transparent;color:#137CD8;font:inherit;font-weight:800;padding:6px 10px;cursor:pointer}.channel-bar{display:none}
  .mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);background:#fff;z-index:12000;transform:translateX(-105%);transition:transform .2s ease;box-shadow:18px 0 40px rgba(16,43,70,.16)}
  .mobile-drawer.is-open{transform:translateX(0)}
  .drawer-mask{display:none;position:fixed;inset:0;background:rgba(16,43,70,.38);z-index:11000;opacity:0;pointer-events:none;transition:opacity .18s ease}
  .drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}
  body.drawer-open{overflow:hidden}.drawer-head{min-height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid rgba(47,168,247,.14)}.drawer-logo img{height:34px;width:auto;max-width:132px;object-fit:contain}.drawer-close{min-height:40px;border:0;background:#F4F8FF;color:#137CD8;border-radius:10px;padding:0 12px;font-weight:700}.drawer-scroll{height:calc(100vh - 64px);overflow-y:auto;padding:14px 16px 28px}.drawer-scroll section{padding:12px 0;border-bottom:1px solid rgba(47,168,247,.12)}.drawer-scroll h2{font-size:14px;color:#5D718A;margin:0 0 6px}.drawer-scroll a{display:block;min-height:40px;padding:7px 6px;color:#24364F;font-weight:700}.drawer-scroll a:hover{color:#137CD8;background:#F7FBFF;text-decoration:none;border-radius:8px}
  .float-tools{display:none}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:8500;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid rgba(47,168,247,.2);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{min-height:54px;display:flex;align-items:center;justify-content:center;color:#137CD8;font-weight:800}.mobile-bottom a:hover{text-decoration:none;background:#F7FBFF}
  .page-shell{padding:22px 14px 36px}.article h1,.hero-copy h1{font-size:30px}.article h2{font-size:22px}.article p{font-size:16px}.hero{grid-template-columns:1fr;gap:16px;padding:20px 0}.hero-copy{order:1}.hero .media{order:2}.hero-media{min-height:170px}.static-gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.static-gallery .media{height:150px}.directory-row{grid-template-columns:1fr;gap:4px;padding:16px}.split,.split.reverse{grid-template-columns:1fr}.split.reverse .split-copy,.split.reverse .media{order:initial}.mini-grid{grid-template-columns:1fr}.topic-index{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.site-footer{padding-bottom:98px}
}
@media(max-width:430px){.header-inner{grid-template-columns:78px 1fr 90px}.site-logo img{max-width:122px;height:32px}.logo-placeholder{min-width:100px;padding:0 8px}.header-action{min-width:82px;padding:0 10px;font-size:14px}.static-gallery .media{height:130px}.article h1,.hero-copy h1{font-size:28px}}