*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:#EAF2FB;color:#24364F;
  font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.8;overflow-x:hidden;
}
a{color:#137CD8;text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
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{display:inline-flex;align-items:center;min-width:132px;text-decoration:none}
.site-logo img{display:block;height:38px;width:auto;max-width:156px;object-fit:contain}
.logo-text{font-size:22px;font-weight:800;color:#137CD8;letter-spacing:.04em}
.nav-core{display:flex;align-items:center;justify-content:center;gap:2px;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;
}
.main-btn:hover{color:#fff;text-decoration:none;filter:brightness(.98)}
.menu-btn{display:none;border:0;background:transparent;color:#137CD8;font-weight:800;min-height:40px;padding:0 8px}
.channel-bar{background:#F4F8FF;border-top:1px solid rgba(47,168,247,.08);border-bottom:1px solid rgba(47,168,247,.12)}
.channel-scroll{max-width:1140px;margin:0 auto;padding:0 16px;display:flex;gap:2px;overflow-x:auto;scrollbar-width:thin}
.channel-scroll a{flex:0 0 auto;padding:9px 10px;color:#5D718A;font-size:14px;white-space:nowrap;text-decoration:none}
.channel-scroll a:hover,.channel-scroll a.is-current{color:#137CD8;font-weight:700}
.site-main{max-width:100%;min-height:60vh}
.page-shell{max-width:1140px;margin:0 auto;padding:28px 72px 52px 16px}
.content-width{max-width:820px;margin:0 auto}
.breadcrumb{font-size:14px;color:#5D718A;margin:0 0 14px}
.breadcrumb a{color:#5D718A}
.page-hero,.section-card,.text-band,.service-strip,.topic-tile,.step-item,.notice-box,.faq-item{
  background:#FFFFFF;border:1px solid rgba(47,168,247,.14);border-radius:16px;
  box-shadow:0 12px 26px rgba(19,124,216,.12);
}
.page-hero{padding:30px;margin-bottom:24px}
.page-hero h1{margin:0 0 12px;color:#137CD8;font-size:clamp(30px,4vw,40px);line-height:1.25}
.page-hero p{margin:0;color:#5D718A;font-size:17px}
.section-card{padding:26px;margin:22px 0}
.section-card h2,.text-band h2{margin:0 0 12px;color:#137CD8;font-size:24px;line-height:1.35}
.section-card h3{color:#24364F;margin:18px 0 8px}
.section-card p,.section-card li{font-size:16px}
.section-card ul,.section-card ol{padding-left:1.3em}
.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);padding:8px 12px;border-radius:10px;font-weight:700}
.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{min-height:190px}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:center}
.split .media{min-height:210px}
.hero-slider{position:relative;z-index:1;max-width:1140px;margin:26px auto 0;padding:0 16px}
.hero-slider-frame{position:relative;background:#fff;border-radius:16px;overflow:hidden;height:290px;border:1px solid rgba(47,168,247,.14);box-shadow:0 12px 26px rgba(19,124,216,.12)}
.hero-slide{position:absolute;inset:0;display:none;align-items:center;justify-content:center;background:#EDF5FF}
.hero-slide.is-active{display:flex}
.hero-slide img{width:100%;height:100%;object-fit:contain;display:block}
.hero-slide .media-placeholder{width:100%;height:100%;min-height:0;border-radius:0}
.slider-prev,.slider-next{position:absolute;z-index:2;top:50%;transform:translateY(-50%);width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.9);color:#137CD8;font-size:24px;font-weight:800;cursor:pointer}
.slider-prev{left:28px}.slider-next{right:28px}
.slider-dots{position:absolute;z-index:2;left:50%;bottom:13px;transform:translateX(-50%);display:flex;gap:8px}
.slider-dot{width:10px;height:10px;padding:0;border:0;border-radius:50%;background:#c9d9e8;cursor:pointer}
.slider-dot.is-active{background:#137CD8}
.home-index{max-width:1140px;margin:0 auto;padding:28px 72px 54px 16px}
.home-heading{padding:10px 0 18px}
.home-heading h1{margin:0;color:#137CD8;font-size:clamp(30px,4vw,40px)}
.home-heading p{margin:6px 0 0;color:#5D718A}
.six-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:10px 0 24px}
.topic-tile{padding:20px;min-height:126px}
.topic-tile h2{font-size:19px;margin:0 0 8px;color:#137CD8}
.topic-tile p{margin:0;color:#5D718A;font-size:14px}
.text-band{padding:22px 26px;background:#F4F8FF;margin:24px 0;box-shadow:none}
.text-band p{margin:0}
.home-split{margin:26px 0}
.home-split .copy{background:#fff;border-radius:16px;padding:26px;border:1px solid rgba(47,168,247,.14);box-shadow:0 12px 26px rgba(19,124,216,.12)}
.home-split h2{color:#137CD8;margin-top:0}
.service-strip{display:grid;grid-template-columns:180px 1fr auto;gap:18px;align-items:center;padding:16px 20px}
.service-strip .media{height:98px;aspect-ratio:auto}
.service-strip h2{margin:0 0 4px;color:#137CD8;font-size:20px}
.service-strip p{margin:0;color:#5D718A}
.step-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}
.step-item{padding:18px;box-shadow:none}
.step-item strong{display:block;color:#137CD8;margin-bottom:6px}
.notice-box{padding:18px 20px;background:#F4F8FF;box-shadow:none;border-left:4px solid #2FA8F7}
.kicker{display:inline-block;font-size:13px;color:#137CD8;background:#EDF5FF;border-radius:999px;padding:4px 10px;margin-bottom:10px}
.faq-list{display:grid;gap:14px}
.faq-item{padding:22px;box-shadow:none}
.faq-item h2{font-size:19px;margin:0 0 8px;color:#137CD8}
.faq-item p{margin:0}
.side-tools{position:fixed;right:10px;top:32%;z-index:8000;width:98px;display:flex;flex-direction:column;gap:8px}
.side-tools>a,.side-tools>button{display:flex;align-items:center;justify-content:center;min-height:40px;padding:8px;background:#fff;color:#137CD8;border:1px solid rgba(47,168,247,.14);border-radius:10px;font-weight:700;text-align:center;box-shadow:0 8px 18px rgba(19,124,216,.08);cursor:pointer}
.side-tools .main-btn{color:#fff;background:linear-gradient(135deg,#45C7FF 0%,#2FA8F7 48%,#137CD8 100%);border:0}
.site-footer{background:#102B46;color:#EAF6FF}
.footer-grid{max-width:1140px;margin:0 auto;padding:40px 16px 26px;display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:28px}
.footer-grid h2{font-size:16px;margin:0 0 10px;color:#fff}
.footer-grid a{display:block;color:#EAF6FF;margin:5px 0}
.footer-grid p{color:#d6e9f8;margin:10px 0 0}
.footer-logo-text{color:#fff}
.footer-bottom{max-width:1140px;margin:0 auto;padding:18px 16px 28px;border-top:1px solid rgba(234,246,255,.18);font-size:13px;color:#d6e9f8}
.footer-bottom p{margin:4px 0}
.mobile-bottom{display:none}
.mobile-drawer,.drawer-mask{display:none}
body.drawer-open{overflow:hidden}

@media(max-width:980px){
  .header-inner{min-height:62px;padding:0 12px;display:grid;grid-template-columns:1fr auto 1fr;gap:6px}
  .menu-btn{display:inline-flex;align-items:center;justify-content:flex-start;min-width:0}
  .header-inner>.site-logo{justify-self:center;min-width:0}
  .header-inner>.site-logo img{height:34px;max-width:136px}
  .nav-core,.channel-bar{display:none}
  .header-action{justify-self:end;height:40px;min-width:74px;padding:0 13px;font-size:14px}
  .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;
  }
  .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{min-height:64px;display:flex;align-items:center;justify-content:space-between;padding:10px 14px;border-bottom:1px solid rgba(47,168,247,.14)}
  .drawer-head .site-logo img{height:34px}
  .drawer-close{border:0;background:#EDF5FF;color:#137CD8;min-height:40px;padding:0 12px;border-radius:10px;font-weight:700}
  .drawer-groups{padding:8px 14px 28px}
  .drawer-groups section{padding:12px 0;border-bottom:1px solid rgba(47,168,247,.12)}
  .drawer-groups h2{font-size:14px;color:#5D718A;margin:0 0 6px}
  .drawer-groups a{display:block;min-height:40px;padding:7px 3px;color:#24364F}
  .side-tools{display:none}
  .page-shell,.home-index{padding:22px 16px 86px}
  .hero-slider{margin-top:18px;padding:0 16px}
  .hero-slider-frame{height:230px}
  .split{grid-template-columns:1fr}
  .split .media{min-height:0}
  .service-strip{grid-template-columns:130px 1fr}
  .service-strip .strip-link{grid-column:1/-1;justify-self:start}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .mobile-bottom{position:fixed;display:grid;grid-template-columns:repeat(4,1fr);left:0;right:0;bottom:0;z-index:8500;background:#fff;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:#24364F;font-weight:700}
}
@media(max-width:640px){
  body{font-size:16px}
  .site-logo img{max-width:122px}
  .page-hero{padding:22px}
  .page-hero h1{font-size:28px}
  .section-card{padding:20px}
  .section-card h2,.text-band h2{font-size:21px}
  .hero-slider-frame{height:164px}
  .slider-prev,.slider-next{width:38px;height:38px}
  .slider-prev{left:22px}.slider-next{right:22px}
  .six-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .topic-tile{padding:16px;min-height:120px}
  .home-heading h1{font-size:28px}
  .service-strip{grid-template-columns:1fr}
  .service-strip .media{height:auto;aspect-ratio:16/9}
  .step-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:18px}
}
@media(max-width:390px){
  .header-inner{padding:0 8px}
  .menu-btn{font-size:14px;padding:0 4px}
  .header-action{font-size:13px;min-width:70px;padding:0 10px}
  .site-logo img{max-width:112px}
}