*{box-sizing:border-box}
html,body{margin:0;max-width:100%;overflow-x:hidden}
body{font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;background:#fff;color:#1F2329;line-height:1.8}
a,button{font:inherit}
a{color:inherit}
img,.media,.card,.grid>*{max-width:100%}
button{cursor:pointer}
:focus-visible{outline:2px solid #C90000;outline-offset:3px}
.site-header{position:sticky;top:0;z-index:9999;width:100%;background:rgba(255,255,255,.96);border-bottom:1px solid rgba(201,0,0,.08);backdrop-filter:blur(10px)}
.header-inner{max-width:1280px;min-height:74px;margin:0 auto;padding:0 22px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.site-logo,.drawer-logo,.footer-logo{display:inline-flex;align-items:center;text-decoration:none}
.brand-logo-wrap{display:inline-flex;align-items:center;justify-content:center}
.site-logo img,.drawer-logo img,.footer-logo img{display:block;height:48px;width:auto;max-width:160px;object-fit:contain}
.logo-ph{display:block;width:150px;height:48px;border-radius:10px;background:linear-gradient(160deg,#F1F3F6,#FFFFFF);border:1px solid #E4E7EC}
.nav-core{display:flex;align-items:center;gap:18px;white-space:nowrap;flex-wrap:nowrap}
.nav-core a{color:#1F2329;padding:10px 4px;position:relative;font-weight:700;text-decoration:none}
.nav-core a:hover,.nav-core a.active{color:#C90000}
.nav-core a.active::after{content:"";position:absolute;left:0;right:0;bottom:-10px;height:3px;border-radius:999px;background:#C90000}
.header-reg-btn{height:44px;min-width:88px;padding:0 22px;display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(180deg,#F12B2B 0%,#C90000 55%,#A80000 100%);color:#fff;border-radius:999px;text-decoration:none;font-weight:700;white-space:nowrap}
.menu-toggle{display:none;width:44px;height:44px;padding:10px;border:1px solid rgba(201,0,0,.12);background:#fff;border-radius:12px;align-items:center;justify-content:center;flex-direction:column;gap:4px}
.menu-toggle span{display:block;width:20px;height:2px;background:#1F2329;border-radius:2px}
.drawer-overlay,.mobile-drawer{visibility:hidden;pointer-events:none}
.drawer-overlay{position:fixed;inset:0;z-index:10000;background:rgba(17,21,28,.55);opacity:0;transition:opacity .22s ease}
.drawer-overlay.open{visibility:visible;pointer-events:auto;opacity:1}
.mobile-drawer{position:fixed;left:0;top:0;bottom:0;width:min(84vw,320px);z-index:10001;background:#fff;transform:translateX(-102%);transition:transform .22s ease;box-shadow:16px 0 40px rgba(18,28,45,.12)}
.mobile-drawer.open{visibility:visible;pointer-events:auto;transform:translateX(0)}
.drawer-head{height:74px;padding:0 18px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #ECEFF3}
.drawer-close{width:40px;height:40px;border:0;border-radius:10px;background:#F6F7F9;color:#1F2329;font-size:28px;line-height:1}
.drawer-scroll{height:calc(100% - 74px);overflow:auto;padding:16px 14px 28px}
.drawer-open{overflow:hidden}
.channel-group{margin:0 0 18px}
.channel-group h2{margin:0 0 8px;font-size:13px;letter-spacing:.08em;color:#8A93A0}
.channel-group a{display:block;padding:9px 10px;border-bottom:1px solid #F0F2F5;text-decoration:none;color:#434A54;border-radius:8px}
.channel-group a:hover,.channel-group a.active{color:#C90000;background:#FFF5F5}
.site-main{width:100%}
.content-shell{max-width:1280px;margin:0 auto;padding:32px 22px 0;display:flex;align-items:flex-start;gap:30px}
.desktop-sidebar{width:226px;flex:0 0 226px}
.sidebar-inner{position:sticky;top:96px;border:1px solid rgba(201,0,0,.10);border-radius:18px;background:#fff;padding:18px;box-shadow:0 12px 30px rgba(18,28,45,.05)}
.main-column{min-width:0;flex:1}
.page-hero{padding:56px 0 44px}
.page-hero .eyebrow,.section-kicker{font-size:14px;font-weight:800;color:#C90000;letter-spacing:.08em}
.page-hero h1{margin:8px 0 14px;font-size:clamp(42px,5vw,56px);line-height:1.16;letter-spacing:-.03em}
.page-hero p{margin:0;max-width:780px;color:#5D6673;font-size:18px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.btn-primary,.btn-secondary{min-height:44px;padding:0 20px;border-radius:999px;text-decoration:none;font-weight:700;display:inline-flex;align-items:center;justify-content:center}
.btn-primary{background:linear-gradient(180deg,#F12B2B 0%,#C90000 55%,#A80000 100%);color:#fff}
.btn-secondary{border:1px solid rgba(201,0,0,.18);color:#C90000;background:#fff}
.section{padding:72px 0}
.section.soft{background:#F6F7F9;border-radius:22px;padding-left:28px;padding-right:28px}
.section h2{margin:6px 0 18px;font-size:clamp(28px,3vw,36px);line-height:1.25}
.section h3{font-size:22px;line-height:1.35;margin:0 0 10px}
.section p{margin:0 0 16px;color:#434A54;font-size:17px}
.article-wrap{max-width:880px}
.reading{max-width:860px}
.intro{font-size:19px!important;color:#343A43!important}
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{background:#fff;border:1px solid #E9ECF1;border-radius:18px;padding:20px;box-shadow:0 12px 30px rgba(18,28,45,.06);transition:transform .18s ease,border-color .18s ease}
.card:hover{transform:translateY(-3px);border-color:rgba(201,0,0,.26)}
.card p:last-child{margin-bottom:0}
.text-link{color:#C90000;text-decoration:none;font-weight:700}
.text-link:hover{text-decoration:underline}
.split{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(260px,.88fr);gap:28px;align-items:center}
.split.reverse{grid-template-columns:minmax(260px,.88fr) minmax(0,1.12fr)}
.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:16px;background:#F7F8FA}
.media>img{position:absolute;inset:0;width:100%;height:100%;max-width:100%;object-fit:contain;object-position:center center;display:block}
.media-ph{width:100%;height:100%;background:linear-gradient(160deg,#F1F3F6,#FFFFFF)}
.media-card{aspect-ratio:16/10;max-height:210px}
.media-block{aspect-ratio:16/10;max-height:300px}
.media-banner{aspect-ratio:16/6;min-height:260px;max-height:360px}
.media-app{aspect-ratio:9/16;max-width:280px;max-height:460px;margin:0 auto}
.carousel{position:relative;overflow:hidden;border-radius:20px;background:#F7F8FA}
.carousel-track{position:relative;min-height:260px}
.carousel-slide{position:absolute;inset:0;opacity:0;pointer-events:none;transition:opacity .28s ease}
.carousel-slide.is-active{position:relative;opacity:1;pointer-events:auto}
.carousel .media{border-radius:20px}
.carousel-prev,.carousel-next{position:absolute;top:50%;transform:translateY(-50%);z-index:3;width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.94);color:#1F2329;font-size:24px;box-shadow:0 8px 20px rgba(18,28,45,.12)}
.carousel-prev{left:14px}.carousel-next{right:14px}
.carousel-dots{position:absolute;z-index:4;left:0;right:0;bottom:14px;display:flex;justify-content:center;gap:8px}
.carousel-dot{width:9px;height:9px;padding:0;border:0;border-radius:50%;background:rgba(31,35,41,.28)}
.carousel-dot.is-active{background:#C90000}
.note-list{display:grid;gap:12px;margin:18px 0 0;padding:0;list-style:none}
.note-list li{position:relative;padding:14px 16px 14px 42px;background:#F6F7F9;border-radius:14px;color:#434A54}
.note-list li::before{content:"✓";position:absolute;left:16px;top:13px;color:#C90000;font-weight:800}
.feedback-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.feedback{padding:18px;border-left:3px solid #C90000;background:#F8F9FB;border-radius:0 14px 14px 0;color:#4A515C}
.faq-list{display:grid;gap:12px}
.faq-item{border:1px solid #E7EAF0;border-radius:14px;background:#fff;overflow:hidden}
.faq-question{width:100%;text-align:left;border:0;background:#fff;padding:17px 18px;color:#1F2329;font-weight:800}
.faq-question[aria-expanded="true"]{color:#C90000}
.faq-answer{padding:0 18px 18px;color:#5D6673}
.faq-answer p{margin:0;color:#5D6673;font-size:16px}
.related-links{display:flex;flex-wrap:wrap;gap:10px}
.related-links a{padding:9px 14px;background:#F6F7F9;border-radius:999px;text-decoration:none;color:#434A54}
.related-links a:hover{color:#C90000}
.alert{padding:20px;border:1px solid rgba(201,0,0,.14);background:#FFF8F8;border-radius:16px}
.site-footer{margin-top:84px;background:#11151C;color:#E7ECF3;border-top:1px solid rgba(255,255,255,.08)}
.footer-inner{max-width:1280px;margin:0 auto;padding:52px 22px 36px;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
.footer-logo img{height:44px;max-width:150px}
.footer-brand p{max-width:340px;color:#B8C0CC}
.footer-col{display:flex;flex-direction:column;gap:8px}
.footer-col h2{font-size:15px;margin:0 0 8px;color:#fff}
.footer-col a{color:#CDD4DE;text-decoration:none}
.footer-col a:hover{color:#fff}
.footer-bottom{max-width:1280px;margin:0 auto;padding:18px 22px 26px;border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;gap:20px;color:#AEB7C4;font-size:14px}
.footer-bottom p{margin:0}
.mobile-bottom-nav{display:none}
@media (max-width:1100px){
  .desktop-sidebar{display:none}
  .content-shell{padding-top:20px}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .nav-core{gap:11px}.nav-core a{font-size:14px}
  .header-inner{gap:12px}
  .footer-inner{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split,.split.reverse{grid-template-columns:1fr}
}
@media (max-width:767px){
  body{padding-bottom:70px}
  .header-inner{min-height:64px;height:64px;padding:0 12px;display:grid;grid-template-columns:48px 1fr 76px;gap:8px}
  .menu-toggle{display:flex;justify-self:start}
  .site-logo{justify-self:center;min-width:0}
  .site-logo img{height:40px;max-width:132px}
  .site-logo .logo-ph{width:118px;height:40px}
  .nav-core{display:none}
  .header-reg-btn{justify-self:end;height:40px;min-width:68px;padding:0 14px}
  .content-shell{padding:14px 14px 0}
  .page-hero{padding:42px 0 32px}
  .page-hero h1{font-size:clamp(30px,9vw,38px)}
  .page-hero p{font-size:17px}
  .section{padding:52px 0}
  .section.soft{padding:42px 18px;margin-left:-4px;margin-right:-4px}
  .section h2{font-size:clamp(24px,7vw,28px)}
  .section h3{font-size:20px}
  .section p{font-size:16px;line-height:1.78}
  .grid-2,.grid-3,.grid-4,.feedback-list{grid-template-columns:1fr}
  .media-banner{min-height:150px;max-height:210px}
  .media-card{max-height:160px}
  .media-block{max-height:200px}
  .media-app{max-width:200px;max-height:340px}
  .carousel-track{min-height:150px}
  .carousel-prev,.carousel-next{width:38px;height:38px}
  .footer-inner{grid-template-columns:1fr;padding:42px 18px 24px}
  .footer-bottom{padding:18px;display:block}
  .footer-bottom p+p{margin-top:8px}
  .mobile-bottom-nav{position:fixed;z-index:9998;left:0;right:0;bottom:0;height:60px;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid #E7EAF0;box-shadow:0 -6px 18px rgba(18,28,45,.06)}
  .mobile-bottom-nav a{display:flex;align-items:center;justify-content:center;text-decoration:none;font-size:14px;font-weight:700;color:#5D6673}
  .mobile-bottom-nav a.active{color:#C90000}
  .site-footer{margin-top:58px}
}
@media (max-width:390px){
  .header-inner{grid-template-columns:46px 1fr 70px;padding:0 9px;gap:5px}
  .menu-toggle{width:40px;height:40px}
  .header-reg-btn{min-width:64px;padding:0 11px;font-size:14px}
  .site-logo img{max-width:116px;height:38px}
  .site-logo .logo-ph{width:106px;height:38px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
  .card:hover{transform:none}
}