*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#F4FBFF;color:#223044;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.82;overflow-x:hidden}img{max-width:100%}a{color:#0877C9}button{font:inherit}body.drawer-open{overflow:hidden}
.site-header{position:sticky;top:0;z-index:9999;width:100%;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);box-shadow:0 8px 24px rgba(8,119,201,.08)}.header-inner{max-width:1180px;min-height:70px;margin:0 auto;padding:0 18px;display:flex;align-items:center;justify-content:space-between;gap:14px}.site-logo,.drawer-logo,.footer-logo{display:flex;align-items:center;text-decoration:none}.site-logo img,.drawer-logo img,.footer-logo img{display:block;height:40px;width:auto;max-width:168px;object-fit:contain}.logo-fallback{display:inline-flex;align-items:center;justify-content:center;min-width:128px;height:40px;border-radius:12px;background:#EAF7FF;color:#0877C9;font-weight:800}.nav-core{display:flex;white-space:nowrap}.nav-core a{color:#1D2A3A;padding:8px 11px;font-weight:700;text-decoration:none;border-bottom:2px solid transparent}.nav-core a.is-current,.nav-core a:hover{color:#0877C9;border-bottom:2px solid #1CA8F6}.main-btn{display:inline-flex;align-items:center;justify-content:center;height:42px;min-width:96px;padding:0 20px;background:linear-gradient(135deg,#38C7FF 0%,#1CA8F6 48%,#0877C9 100%);color:#fff;border-radius:999px;text-decoration:none;font-weight:700;box-shadow:0 12px 26px rgba(8,119,201,.18);white-space:nowrap}.menu-button{display:none;border:0;background:transparent;width:42px;height:42px;padding:9px;cursor:pointer}.menu-button span{display:block;height:2px;background:#0877C9;margin:5px 0;border-radius:10px}.channel-strip{background:#EAF7FF;border-top:1px solid rgba(28,168,246,.12)}.channel-inner{max-width:1180px;margin:auto;padding:0 18px;display:flex;overflow-x:auto}.channel-inner a{flex:0 0 auto;padding:10px 9px;color:#5F7082;text-decoration:none;font-size:14px;white-space:nowrap}.channel-inner a:hover,.channel-inner a.is-current{color:#0877C9}
.site-main{min-height:60vh}.section{max-width:1180px;margin:auto;padding:54px 18px}.section-tight{padding-top:30px;padding-bottom:30px}.reading{max-width:820px;margin:auto}.eyebrow{color:#0877C9;font-size:14px;font-weight:800;letter-spacing:.08em}h1,h2,h3{color:#0877C9;line-height:1.28}h1{font-size:clamp(28px,4vw,44px);margin-bottom:18px}h2{font-size:26px}.lead{font-size:18px;color:#40566b}.soft-card,.info-card,.article-panel,.step-item,.qa-item{background:#fff;border:1px solid rgba(28,168,246,.12);border-radius:16px;box-shadow:0 16px 40px rgba(8,119,201,.08);padding:24px}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.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;display:block}.media-placeholder{position:absolute;inset:0;background:#EAF7FF}.figure-wrap{height:220px;aspect-ratio:auto}
.hero-slider{position:relative;max-width:1180px;height:330px;margin:28px auto 0;border-radius:16px;overflow:hidden;background:#fff;box-shadow:0 16px 40px rgba(8,119,201,.08)}.hero-slide{position:absolute;inset:0;display:none}.hero-slide.is-active{display:block}.hero-slide img{width:100%;height:100%;object-fit:contain;display:block}.slider-prev,.slider-next{position:absolute;top:50%;transform:translateY(-50%);z-index:4;width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.9);color:#0877C9;font-size:24px;cursor:pointer}.slider-prev{left:16px}.slider-next{right:16px}.slider-dots{position:absolute;left:50%;bottom:13px;transform:translateX(-50%);display:flex;gap:8px;z-index:4}.slider-dot{width:10px;height:10px;border-radius:50%;border:1px solid #0877C9;background:#fff;padding:0;cursor:pointer}.slider-dot.is-active{background:#0877C9}.magazine{display:grid;grid-template-columns:58fr 42fr;gap:24px}.mag-main{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:center}.stack{display:grid;gap:16px}.topic-scroll{display:flex;gap:10px;overflow-x:auto;padding:6px 2px 12px}.topic-scroll a,.related-links a{flex:0 0 auto;display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border-radius:999px;background:#fff;border:1px solid rgba(28,168,246,.2);text-decoration:none;font-weight:700}.boundary{max-width:820px;margin:auto;padding:28px;border-left:4px solid #1CA8F6;background:#fff;border-radius:0 16px 16px 0}.related-links{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px}.step-list,.qa-list{display:grid;gap:18px}.step-item{position:relative;padding-left:74px;counter-increment:step}.step-list{counter-reset:step}.step-item:before{content:counter(step);position:absolute;left:22px;top:22px;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:#EAF7FF;color:#0877C9;font-weight:800}.note{padding:18px 20px;background:#EAF7FF;border-radius:14px}.qa-item h2{font-size:21px}
.side-float{position:fixed;right:14px;top:42%;transform:translateY(-50%);z-index:8000;width:92px;background:#fff;border:1px solid rgba(28,168,246,.16);border-radius:16px;box-shadow:0 16px 40px rgba(8,119,201,.12);overflow:hidden}.side-float a,.side-float button{display:flex;align-items:center;justify-content:center;width:100%;min-height:43px;border:0;border-bottom:1px solid #EAF7FF;background:#fff;color:#0877C9;text-decoration:none;font-size:13px;cursor:pointer}.side-float .float-main{background:linear-gradient(135deg,#38C7FF 0%,#1CA8F6 48%,#0877C9 100%);color:#fff}.site-footer{background:#082A46;color:#EAF8FF;margin-top:42px}.footer-grid{max-width:1180px;margin:auto;padding:48px 18px;display:grid;grid-template-columns:1.45fr 1fr 1fr 1fr;gap:28px}.site-footer h2{font-size:18px;color:#fff}.site-footer a{display:block;color:#EAF8FF;text-decoration:none;padding:4px 0}.site-footer p{color:#cfe9f8}.footer-fallback{background:rgba(234,247,255,.12);color:#fff}.footer-note{max-width:1180px;margin:auto;padding:18px;border-top:1px solid rgba(234,248,255,.18);display:flex;justify-content:space-between;gap:20px;font-size:14px}.footer-note p{margin:0}.mobile-bottom{display:none}
.mobile-drawer,.drawer-mask{display:none}
@media(max-width:980px){.channel-strip,.nav-core,.side-float{display:none}.header-inner{min-height:64px;padding:0 12px;display:grid;grid-template-columns:64px 1fr 98px;gap:8px}.menu-button{display:block;justify-self:start}.site-logo{justify-self:center}.site-logo img{height:36px;max-width:140px}.header-btn{justify-self:end;min-width:90px;height:40px;padding:0 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(8,119,201,.16)}.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;transition:opacity .18s ease}.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}.drawer-head{height:64px;padding:0 14px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #EAF7FF}.drawer-close{width:40px;height:40px;border:0;background:#EAF7FF;color:#0877C9;border-radius:50%;font-size:26px;cursor:pointer}.drawer-scroll{height:calc(100vh - 64px);overflow-y:auto;padding:16px}.drawer-group{margin-bottom:20px}.drawer-group h2{font-size:14px;color:#7A8A9A;margin-bottom:7px}.drawer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}.drawer-links a{padding:9px 10px;border-radius:10px;background:#F4FBFF;text-decoration:none;color:#1D2A3A}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:9000;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid rgba(28,168,246,.14);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:54px;text-decoration:none;color:#0877C9;font-weight:700}body{padding-bottom:58px}.section{padding:38px 16px}.magazine{grid-template-columns:1fr}.hero-slider{height:260px;margin-left:16px;margin-right:16px}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){h1{font-size:30px}.lead,.reading p,.reading li{font-size:16px}.grid-2,.grid-3,.mag-main{grid-template-columns:1fr}.hero-slider{height:180px}.figure-wrap{height:200px}.footer-grid{grid-template-columns:1fr}.footer-note{display:block}.section{padding-top:32px;padding-bottom:32px}}