*{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:1.8;overflow-x:hidden}img,svg,video{max-width:100%}a{color:#0877C9}.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{display:inline-flex;align-items:center;text-decoration:none;flex:0 0 auto}.site-logo img{display:block;height:40px;width:auto;max-width:168px;object-fit:contain}.logo-fallback{font-size:22px;font-weight:800;color:#0877C9;white-space:nowrap}.logo-fallback-dark{color:#EAF8FF}.nav-core{display:flex;align-items:center;justify-content:center;gap:2px;min-width:0}.nav-core a{color:#1D2A3A;padding:8px 11px;font-weight:700;text-decoration:none;white-space:nowrap}.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:#FFFFFF;border-radius:999px;text-decoration:none;font-weight:700;box-shadow:0 12px 26px rgba(8,119,201,.18);white-space:nowrap}.menu-toggle{display:none}.channel-strip{background:#EAF7FF;border-bottom:1px solid rgba(28,168,246,.12)}.channel-inner{max-width:1180px;margin:0 auto;padding:8px 18px;display:flex;gap:18px;overflow-x:auto;scrollbar-width:thin}.channel-inner a{color:#5F7082;text-decoration:none;white-space:nowrap;font-size:14px}.channel-inner a:hover{color:#0877C9}.site-main{min-height:55vh}.container{width:min(1180px,calc(100% - 36px));margin:0 auto}.reading{width:min(820px,calc(100% - 36px));margin:0 auto}.section{padding:52px 0}.section.tight{padding:34px 0}.eyebrow{font-weight:800;color:#1CA8F6;letter-spacing:.08em}.page-hero{padding:58px 0 28px}.page-hero h1,.home-intro h1{margin:.15em 0 .4em;color:#0877C9;font-size:clamp(30px,4vw,44px);line-height:1.25}.lead{font-size:18px;color:#5F7082;max-width:760px}.card{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,.grid-3{display:grid;gap:20px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.card h2,.card h3,.reading h2,.reading h3{color:#0877C9;line-height:1.35}.text-links{display:flex;flex-wrap:wrap;gap:10px 16px}.text-links a{text-decoration:none}.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 center;display:block}.placeholder{position:absolute;inset:0;background:#EAF7FF}.topic-layout{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:28px;align-items:start}.topic-layout .media{min-height:220px}.note{background:#EAF7FF;border-left:4px solid #1CA8F6;border-radius:12px;padding:16px 18px}.steps{counter-reset:step;display:grid;gap:14px}.step{position:relative;padding:18px 18px 18px 58px;background:#fff;border:1px solid rgba(28,168,246,.12);border-radius:14px}.step:before{counter-increment:step;content:counter(step);position:absolute;left:18px;top:18px;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:#EAF7FF;color:#0877C9;font-weight:800}.topic-scroll{display:flex;gap:10px;overflow-x:auto;padding:4px 0 8px}.topic-scroll a{flex:0 0 auto;padding:8px 14px;border:1px solid rgba(28,168,246,.2);background:#fff;border-radius:999px;text-decoration:none}.hero-slider{position:relative;width:min(1180px,calc(100% - 36px));height:320px;margin:26px auto 0;background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 16px 40px rgba(8,119,201,.08)}.hero-slide{display:none;position:absolute;inset:0}.hero-slide.is-active{display:block}.hero-slide .media{height:100%;aspect-ratio:auto;border-radius:0}.hero-slide .media>img{object-fit:contain}.hero-prev,.hero-next{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:40px;height:40px;border:0;border-radius:50%;background:rgba(255,255,255,.9);color:#0877C9;font-size:24px;cursor:pointer}.hero-prev{left:14px}.hero-next{right:14px}.hero-dots{position:absolute;left:0;right:0;bottom:12px;z-index:6;display:flex;justify-content:center;gap:8px}.hero-dot{width:10px;height:10px;border:0;border-radius:50%;background:#b7dff7;cursor:pointer}.hero-dot.is-active{background:#0877C9}.magazine{display:grid;grid-template-columns:58fr 42fr;gap:20px}.mag-main{display:grid;grid-template-columns:1.05fr .95fr;gap:20px}.stack{display:grid;gap:16px}.mini-card{background:#fff;border:1px solid rgba(28,168,246,.12);border-radius:16px;padding:20px}.home-intro{padding:48px 0 10px}.site-footer{background:#082A46;color:#EAF8FF;margin-top:48px}.footer-grid{max-width:1180px;margin:0 auto;padding:44px 18px;display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:26px}.site-footer h3{margin-top:0;color:#fff}.site-footer a{display:block;color:#EAF8FF;text-decoration:none;margin:6px 0}.footer-bottom{border-top:1px solid rgba(234,248,255,.15);padding:18px;text-align:center;color:#d7effd}.side-tools{position:fixed;right:12px;top:42%;z-index:8000;display:grid;gap:8px}.side-tools a,.side-tools button{width:88px;padding:10px 8px;border:1px solid rgba(28,168,246,.24);border-radius:10px;background:#fff;color:#0877C9;text-align:center;text-decoration:none;font:inherit;cursor:pointer}.side-tools .side-register{background:linear-gradient(135deg,#38C7FF,#0877C9);color:#fff;border:0}.mobile-bottom{display:none}.mobile-drawer,.drawer-mask{display:none}body.drawer-open{overflow:hidden}.faq-list details{background:#fff;border:1px solid rgba(28,168,246,.14);border-radius:14px;padding:16px 18px;margin:12px 0}.faq-list summary{font-weight:800;color:#0877C9;cursor:pointer}.faq-static{margin-top:10px}.pill-list{display:flex;flex-wrap:wrap;gap:10px}.pill-list a{background:#fff;border:1px solid rgba(28,168,246,.14);border-radius:999px;padding:8px 13px;text-decoration:none}
@media(max-width:980px){.nav-core,.channel-strip,.side-tools{display:none}.menu-toggle{display:inline-grid;place-items:center;width:42px;height:42px;border:0;background:#EAF7FF;color:#0877C9;border-radius:12px;font-size:22px;flex:0 0 auto}.header-inner{min-height:64px}.header-btn{min-width:86px;padding:0 15px}.site-logo img{max-width:150px;height:36px}.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);overflow-y:auto;padding-bottom:24px}.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{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid #EAF7FF}.drawer-close{width:40px;height:40px;border:0;border-radius:10px;background:#EAF7FF;color:#0877C9;font-size:28px}.drawer-group{padding:14px 16px;border-bottom:1px solid #eef7fc}.drawer-group strong{display:block;color:#0877C9;margin-bottom:6px}.drawer-group a{display:inline-block;margin:5px 12px 5px 0;color:#1D2A3A;text-decoration:none}.topic-layout,.magazine,.mag-main{grid-template-columns:1fr}.grid-3{grid-template-columns:1fr 1fr}.hero-slider{height:250px}.footer-grid{grid-template-columns:1fr 1fr}.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 #dff1fb}.mobile-bottom a{padding:10px 4px;text-align:center;text-decoration:none;font-weight:700;color:#0877C9}body{padding-bottom:58px}}
@media(max-width:600px){.header-inner{padding:0 10px;gap:8px}.header-btn{height:40px;min-width:76px;padding:0 12px;font-size:14px}.site-logo img{max-width:126px;height:32px}.logo-fallback{font-size:19px}.section{padding:34px 0}.page-hero{padding:36px 0 20px}.grid-2,.grid-3,.footer-grid{grid-template-columns:1fr}.hero-slider{height:180px;width:min(100% - 24px,1180px)}.hero-prev,.hero-next{width:34px;height:34px}.container,.reading{width:min(100% - 24px,1180px)}.reading{max-width:820px}.card{padding:20px}.home-intro{padding-top:34px}}
