*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#EAF2FB;color:#24364F;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}
img{max-width:100%}
a{color:#137CD8}
button,a{touch-action:manipulation}
button{font:inherit}
.site-header{position:sticky;top:0;z-index:9000;width:100%;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);box-shadow:0 6px 18px rgba(19,124,216,.08)}
.header-inner{max-width:1140px;min-height:66px;margin:0 auto;padding:0 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.site-logo,.drawer-logo,.footer-logo{display:inline-flex;align-items:center;text-decoration:none}
.site-logo img{display:block;height:38px;width:auto;max-width:156px;object-fit:contain}
.drawer-logo img,.footer-logo img{height:36px;width:auto;max-width:150px;object-fit:contain}
.logo-placeholder{display:inline-block;width:142px;height:38px;border-radius:10px;background:linear-gradient(135deg,#EDF5FF,#D8ECFF)}
.nav-core{display:flex;align-items:center;gap:4px;min-width:0}
.nav-core a{color:#24364F;padding:8px 11px;font-weight:700;text-decoration:none;white-space:nowrap}
.nav-core a.is-current,.nav-core a:hover{color:#137CD8;box-shadow:inset 0 -2px 0 #2FA8F7}
.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}
.menu-toggle{display:none;min-height:40px;border:0;background:transparent;color:#137CD8;font-weight:700;padding:0 4px}
.channel-bar{background:#F4F8FF;border-bottom:1px solid rgba(47,168,247,.14)}
.channel-inner{max-width:1140px;margin:0 auto;padding:0 16px;display:flex;gap:18px;overflow-x:auto;white-space:nowrap;scrollbar-width:thin}
.channel-inner a{display:block;padding:10px 0;color:#5D718A;text-decoration:none;font-size:14px}
.channel-inner a:hover{color:#137CD8}
.site-main{min-height:60vh;padding-bottom:30px}
.page-shell{max-width:1140px;margin:0 auto;padding:0 16px}
.breadcrumb{font-size:14px;color:#5D718A;padding:22px 0 10px}
.breadcrumb a{color:#137CD8;text-decoration:none}
.hero-copy,.article-card,.soft-band,.index-grid,.split-card,.service-strip,.notice-card,.link-panel,.faq-list,.step-list,.directory-list,.compare-grid{background:#FFFFFF;border:1px solid rgba(47,168,247,.14);box-shadow:0 12px 26px rgba(19,124,216,.12);border-radius:16px}
.hero-copy{padding:30px;margin:0 0 26px}
.hero-copy h1,.section-title h1{margin:0;color:#137CD8;font-size:clamp(28px,4vw,40px);line-height:1.2}
.hero-copy p{font-size:17px;line-height:1.85;margin:16px 0 0;color:#24364F}
.article-wrap{max-width:820px;margin:0 auto}
.article-card{padding:30px;margin:0 0 24px}
.article-card h1{margin:0 0 16px;color:#137CD8;font-size:clamp(28px,4vw,38px);line-height:1.25}
.article-card h2{color:#137CD8;font-size:24px;margin:28px 0 12px}
.article-card p,.article-card li{font-size:17px;line-height:1.85}
.article-card ul,.article-card ol{padding-left:22px}
.article-card a{font-weight:700;text-underline-offset:3px}
.related-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.related-links a{background:#F4F8FF;border:1px solid rgba(47,168,247,.14);border-radius:999px;padding:9px 14px;text-decoration:none}
.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:14px;background:#EDF5FF;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{position:absolute;inset:0;background:linear-gradient(135deg,#EDF5FF,#D9ECFF)}
.media.article-media{margin:18px 0 22px}
.carousel{position:relative;z-index:1;max-width:1140px;margin:24px auto 30px;padding:0 16px}
.carousel-viewport{position:relative;overflow:hidden;border-radius:16px;background:#FFFFFF;box-shadow:0 12px 26px rgba(19,124,216,.12);height:290px}
.carousel-slide{position:absolute;inset:0;opacity:0;pointer-events:none;transition:opacity .35s ease}
.carousel-slide.is-active{opacity:1;pointer-events:auto}
.carousel-slide .media{height:100%;aspect-ratio:auto;border-radius:0}
.carousel-slide .media-placeholder{border-radius:0}
.carousel-prev,.carousel-next{position:absolute;top:50%;transform:translateY(-50%);z-index:2;width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.94);color:#137CD8;font-size:24px;font-weight:700;box-shadow:0 8px 18px rgba(16,43,70,.16)}
.carousel-prev{left:28px}.carousel-next{right:28px}
.carousel-dots{position:absolute;left:50%;bottom:12px;transform:translateX(-50%);display:flex;gap:8px;z-index:2}
.carousel-dot{width:10px;height:10px;min-height:10px;border:0;border-radius:50%;padding:0;background:#B8D6EE}
.carousel-dot.is-active{background:#137CD8}
.index-intro{max-width:1140px;margin:0 auto 24px;padding:0 16px}
.index-intro h1{color:#137CD8;font-size:clamp(28px,4vw,38px);margin:0 0 18px}
.index-grid{padding:18px;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.index-item{padding:18px;border-radius:14px;background:#F4F8FF;border:1px solid rgba(47,168,247,.14)}
.index-item a{display:inline-block;font-weight:800;text-decoration:none;color:#137CD8;margin-bottom:7px}
.index-item p{margin:0;line-height:1.7;color:#5D718A}
.soft-band{max-width:1140px;margin:0 auto 28px;padding:18px 22px;background:#F4F8FF}
.soft-band p{margin:0;font-size:16px;line-height:1.8}
.split-card{max-width:1140px;margin:0 auto 26px;padding:22px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:24px;align-items:center}
.split-card h2{color:#137CD8;font-size:28px;margin:0 0 12px}
.split-card p{font-size:17px;line-height:1.85}
.service-strip{max-width:1140px;margin:0 auto 34px;padding:18px;display:grid;grid-template-columns:260px 1fr;gap:22px;align-items:center}
.service-strip h2{margin:0 0 10px;color:#137CD8}
.service-strip p{margin:0 0 10px;line-height:1.75}
.service-strip .media{height:150px;aspect-ratio:auto}
.notice-card,.link-panel,.directory-list,.step-list{padding:22px;margin:0 0 22px}
.notice-card{background:#F4F8FF}
.notice-card h2,.link-panel h2,.directory-list h2,.step-list h2{color:#137CD8;margin:0 0 12px}
.link-panel a,.directory-list a{display:inline-flex;margin:6px 8px 6px 0;padding:9px 13px;border-radius:999px;background:#EDF5FF;text-decoration:none;font-weight:700}
.step-list ol{margin:0;padding-left:22px}
.step-list li{margin:10px 0;line-height:1.8}
.compare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;overflow:hidden;margin:0 0 22px}
.compare-grid section{padding:22px;border-right:1px solid rgba(47,168,247,.14)}
.compare-grid section:last-child{border-right:0}
.compare-grid h2{color:#137CD8;margin:0 0 10px;font-size:21px}
.faq-list{padding:8px 24px 24px}
.faq-list details{padding:18px 0;border-bottom:1px solid rgba(47,168,247,.14)}
.faq-list details:last-child{border-bottom:0}
.faq-list summary{cursor:pointer;color:#137CD8;font-weight:800;font-size:18px}
.faq-list p{margin:10px 0 0;line-height:1.8}
.side-float{position:fixed;right:12px;top:180px;z-index:8000;width:118px;padding:10px;background:#FFFFFF;border:1px solid rgba(47,168,247,.14);border-radius:16px;box-shadow:0 12px 26px rgba(19,124,216,.12);display:flex;flex-direction:column;gap:8px}
.side-float a,.side-float button{min-height:40px;border:0;background:#FFFFFF;color:#137CD8;text-decoration:none;font-weight:700;text-align:center;border-radius:10px;padding:10px 8px}
.side-float .main-btn{color:#FFFFFF;background:linear-gradient(135deg,#45C7FF 0%,#2FA8F7 48%,#137CD8 100%)}
.mobile-bottom{display:none}
.site-footer{background:#102B46;color:#EAF6FF;margin-top:42px}
.footer-grid{max-width:1140px;margin:0 auto;padding:42px 16px 28px;display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:26px}
.footer-grid h2{font-size:17px;margin:0 0 12px;color:#FFFFFF}
.footer-grid a{display:block;color:#EAF6FF;text-decoration:none;margin:8px 0}
.footer-grid p{line-height:1.75;color:#D7E9F7}
.footer-note{max-width:1140px;margin:0 auto;padding:20px 16px 30px;border-top:1px solid rgba(234,246,255,.15)}
.footer-note p{margin:6px 0;line-height:1.75}
.mobile-drawer,.drawer-mask{display:none}
body.drawer-open{overflow:hidden}
@media(min-width:981px){
  .site-main{padding-right:56px}
}
@media(max-width:980px){
  .nav-core,.channel-bar,.side-float{display:none}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center}
  .header-inner{display:grid;grid-template-columns:66px 1fr 100px;gap:8px;min-height:62px}
  .site-logo{justify-content:center;min-width:0}
  .site-logo img{max-width:138px;height:34px}
  .header-action{min-width:88px;padding:0 12px;justify-self:end}
  .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);overflow-y:auto;padding-bottom:28px}
  .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}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px;border-bottom:1px solid rgba(47,168,247,.14)}
  .drawer-close{min-height:40px;border:0;border-radius:10px;background:#F4F8FF;color:#137CD8;font-weight:700;padding:0 12px}
  .drawer-group{padding:14px}
  .drawer-group strong{display:block;color:#5D718A;margin-bottom:8px}
  .drawer-group a{display:block;min-height:40px;padding:10px 4px;text-decoration:none;border-bottom:1px solid rgba(47,168,247,.10)}
  .carousel-viewport{height:240px}
  .index-grid{grid-template-columns:repeat(2,1fr)}
  .split-card{grid-template-columns:1fr}
  .service-strip{grid-template-columns:1fr}
  .service-strip .media{height:180px}
  .compare-grid{grid-template-columns:1fr}
  .compare-grid section{border-right:0;border-bottom:1px solid rgba(47,168,247,.14)}
  .compare-grid section:last-child{border-bottom:0}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:8500;display:grid;grid-template-columns:repeat(4,1fr);background:#FFFFFF;border-top:1px solid rgba(47,168,247,.2);padding-bottom:env(safe-area-inset-bottom)}
  .mobile-bottom a{min-height:52px;display:flex;align-items:center;justify-content:center;color:#137CD8;text-decoration:none;font-weight:700}
  body{padding-bottom:52px}
}
@media(max-width:640px){
  .header-inner{padding:0 10px;grid-template-columns:58px 1fr 92px}
  .site-logo img{max-width:124px}
  .main-btn{height:40px}
  .page-shell,.carousel,.index-intro{padding-left:12px;padding-right:12px}
  .carousel{margin-top:16px}
  .carousel-viewport{height:168px}
  .carousel-prev,.carousel-next{width:38px;height:38px;font-size:20px}
  .carousel-prev{left:20px}.carousel-next{right:20px}
  .index-grid{padding:12px;gap:10px}
  .index-item{padding:14px}
  .hero-copy,.article-card{padding:22px}
  .article-card h2{font-size:22px}
  .article-card p,.article-card li{font-size:16px}
  .soft-band{margin-left:12px;margin-right:12px}
  .split-card,.service-strip{margin-left:12px;margin-right:12px;padding:16px}
  .footer-grid{grid-template-columns:1fr;padding-top:32px}
}