:root{--orange:#FF8A00;--active:#C45A12;--gold:#FFC44D;--ink:#1A1A1A;--muted:#666;--surface:#F6F7F9;--border:rgba(0,0,0,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:#333;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.78}a{color:inherit;text-decoration:none}a:hover{color:var(--active)}button{font:inherit}img{max-width:100%}.container{width:calc(100% - 48px);max-width:1100px;margin-inline:auto}.skip-link{position:absolute;top:-80px;left:10px;background:white;z-index:15000;padding:8px}.skip-link:focus{top:10px}.site-header{background:#fff;border-bottom:1px solid var(--border)}.topbar{display:flex;align-items:center;gap:22px;min-height:70px}.site-logo{flex-shrink:0;display:inline-flex;align-items:center}.site-logo img{height:34px;width:auto;max-width:160px;object-fit:contain}.logo-fallback{font-size:25px;font-weight:900;letter-spacing:-1px;color:var(--orange);white-space:nowrap}.logo-fallback span{color:var(--ink)}.brand-intro{display:flex;flex-direction:column;line-height:1.35;gap:3px}.brand-intro strong{font-size:14px;letter-spacing:2px;color:var(--ink)}.brand-intro span{font-size:12px;color:var(--muted)}.register-btn{margin-left:auto;background:linear-gradient(90deg,#FF8A00,#FFC44D);color:#392000!important;font-weight:700;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;min-width:94px;height:42px;padding:0 22px;white-space:nowrap}.main-nav{border-top:1px solid var(--border)}.nav-inner{display:flex;align-items:stretch;justify-content:space-between;gap:12px;height:50px}.nav-inner a{display:inline-flex;align-items:center;justify-content:center;font-size:15px;white-space:nowrap;border-bottom:2px solid transparent;padding:0 9px}.nav-inner a.active{color:var(--active);border-bottom-color:var(--orange);font-weight:700}.quickbar{background:var(--surface)}.quick-inner{display:flex;align-items:center;gap:22px;min-height:38px;overflow-x:auto;white-space:nowrap;scrollbar-width:thin;font-size:13px}.quick-inner span{color:#888;flex-shrink:0}.quick-inner a{flex-shrink:0}.menu-toggle{display:none}.mobile-drawer,.drawer-mask{display:none}.main-content{padding-top:28px;padding-bottom:58px;min-height:55vh}h1,h2,h3{color:var(--ink);line-height:1.4;margin-top:0}h1{font-size:32px;margin-bottom:12px}h2{font-size:24px}h3{font-size:19px}p{margin:0 0 16px}.eyebrow{color:var(--active);font-weight:700;font-size:13px;letter-spacing:1px;margin:0 0 8px}.page-head{padding:8px 0 25px;border-bottom:1px solid var(--border);margin-bottom:25px}.page-head p{max-width:800px;color:var(--muted);margin-bottom:0}.crumb{font-size:13px;color:#777;margin-bottom:14px}.crumb a{color:var(--active)}.tag-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.tag-links a{font-size:14px;color:#5b5b5b;background:var(--surface);border-radius:7px;padding:6px 12px}.article-layout{display:grid;grid-template-columns:minmax(0,7fr) minmax(235px,3fr);gap:30px;align-items:start}.article-main{min-width:0}.article-section{margin:0 0 33px}.article-section h2{font-size:23px;padding-left:13px;border-left:3px solid var(--orange);margin-bottom:15px}.article-section p{line-height:1.82}.sidebar{background:var(--surface);padding:21px;border-radius:12px}.sidebar h2{font-size:19px;margin-bottom:12px}.sidebar a{display:block;border-bottom:1px solid var(--border);padding:10px 0;font-size:14px}.sidebar a:last-child{border:0}.sidebar p{font-size:13px;color:var(--muted);margin-top:15px}.related{border-top:1px solid var(--border);padding:20px 0;margin-top:15px}.related h2{font-size:19px}.related a{display:inline-block;margin:0 16px 10px 0;color:var(--active);font-size:14px}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:12px;background:var(--surface)}.media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center;display:block}.media-16x9{aspect-ratio:16/9}.media-3x4{aspect-ratio:3/4}.lead-media{max-width:580px;margin:0 0 26px}.lead-media .media{max-height:270px}.home-intro h1{font-size:36px}.home-intro>p{max-width:940px}.topic-strip{font-size:13px;color:var(--active);font-weight:700;letter-spacing:.5px}.hero-grid{display:grid;grid-template-columns:minmax(0,62fr) minmax(0,38fr);gap:22px;margin:24px 0 35px}.hero-grid>.media{max-height:278px}.reading-index{background:var(--surface);padding:20px;border-radius:12px}.reading-index h2{font-size:20px;margin:0 0 10px}.reading-index a{display:block;padding:10px 0;border-bottom:1px solid var(--border);font-size:14px;line-height:1.5}.reading-index a:last-child{border:0}.reading-index strong{display:block;color:var(--ink);font-size:16px}.home-section{padding:25px 0;border-top:1px solid var(--border);margin-bottom:12px}.home-section h2{margin-bottom:18px}.card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:17px}.card{background:white;border:1px solid var(--border);border-radius:12px;padding:19px;min-width:0}.card h3{margin-bottom:9px;font-size:18px}.card p{font-size:14px;color:var(--muted);margin-bottom:12px}.more-link{color:var(--active);font-weight:700;font-size:14px}.split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:27px}.split>section,.split>article{min-width:0}.short-list{list-style:none;padding:0;margin:0}.short-list li{padding:10px 0;border-bottom:1px solid var(--border)}.short-list a{font-weight:700;color:var(--ink)}.short-list p{color:var(--muted);font-size:14px;margin:2px 0}.visual-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.visual-grid .media{max-height:235px}.visual-grid h3{margin:12px 0 4px}.visual-grid p{font-size:14px;color:var(--muted)}.article-index article{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px 20px;align-items:center;border-bottom:1px solid var(--border);padding:14px 0}.article-index h3{font-size:18px;margin:0}.article-index p{font-size:14px;color:var(--muted);margin:3px 0}.article-index a{color:var(--active);font-size:14px}.brand-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}.brand-item{border:1px solid var(--border);border-radius:10px;padding:14px;min-width:0}.brand-head{display:flex;gap:10px;align-items:center;min-height:45px;margin-bottom:8px}.brand-icon{width:56px;min-width:56px;height:42px;background:var(--surface);border-radius:6px;display:flex;align-items:center;justify-content:center;overflow:hidden}.brand-icon img{max-width:100%;max-height:100%;object-fit:contain}.brand-item h2,.brand-item h3{font-size:17px;margin:0;overflow-wrap:anywhere}.brand-item p{font-size:13px;line-height:1.75;color:#555;margin:0}.faq-list details{border-bottom:1px solid var(--border);padding:15px 0}.faq-list summary{cursor:pointer;color:var(--ink);font-weight:700}.faq-list p{margin:10px 0 0}.notice{background:var(--surface);padding:20px;border-radius:10px;margin:25px 0}.notice p:last-child{margin-bottom:0}.app-layout{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:28px;align-items:start}.app-layout .media{max-height:270px}.site-footer{background:#1A1A1A;color:#f5f5f5;padding-top:35px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:30px}.footer-grid h2{color:#fff;font-size:17px;margin:0 0 12px}.footer-grid a{display:block;color:#ddd;font-size:13px;margin-bottom:9px}.footer-grid p{font-size:13px;color:#ddd}.footer-logo img{height:34px;width:auto;max-width:150px;object-fit:contain}.footer-logo .logo-fallback span{color:#fff}.footer-bottom{border-top:1px solid #414141;margin-top:23px;padding:18px 0 24px;display:flex;flex-wrap:wrap;gap:12px 22px;justify-content:space-between;color:#ddd;font-size:12px}.mobile-bottom{display:none}
@media(max-width:980px){.container{width:calc(100% - 40px)}.main-nav,.quickbar,.brand-intro{display:none}.topbar{min-height:58px;justify-content:space-between;gap:12px}.site-logo{margin-inline:auto}.site-logo img{height:28px}.register-btn{min-width:72px;height:36px;padding:0 13px;font-size:14px;margin-left:0}.menu-toggle{display:flex;flex-direction:column;justify-content:center;gap:5px;align-items:center;border:0;background:transparent;width:42px;height:42px;padding:8px;flex-shrink:0}.menu-toggle span{background:#333;width:22px;height:2px;border-radius:3px}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);height:100dvh;background:#fff;color:#1A1A1A;z-index:12000;transform:translateX(-105%);transition:transform .2s ease;overflow-y:auto;visibility:hidden}.mobile-drawer.is-open{transform:translateX(0);visibility:visible}.drawer-mask{display:none;position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:11000;opacity:0;pointer-events:none}.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}body.drawer-open{overflow:hidden}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border)}.drawer-head img{height:28px;width:auto}.drawer-close{border:0;background:transparent;font-size:30px;width:44px;height:44px;cursor:pointer}.drawer-group{padding:15px 16px 5px;border-bottom:1px solid var(--border)}.drawer-group h2{font-size:14px;color:var(--active);margin:0 0 7px}.drawer-group a{display:block;min-height:42px;padding:8px 3px;font-size:15px}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;height:62px;background:#fff;border-top:1px solid var(--border);z-index:1000;padding-bottom:env(safe-area-inset-bottom,0)}.mobile-bottom a{display:flex;flex-direction:column;justify-content:center;align-items:center;line-height:1.4;font-size:12px}.mobile-bottom a span{font-size:20px;color:var(--active)}.main-content{padding-bottom:92px}.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.brand-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){.container{width:calc(100% - 32px)}body{font-size:15px;line-height:1.78}.main-content{padding-top:20px}.home-intro h1{font-size:28px}h1{font-size:26px}h2{font-size:21px}h3{font-size:18px}.hero-grid,.article-layout,.split,.visual-grid,.app-layout{grid-template-columns:minmax(0,1fr)}.hero-grid{gap:14px}.hero-grid>.media{max-height:190px}.reading-index{padding:15px}.home-section{padding:22px 0}.article-section h2{font-size:20px}.sidebar{margin-top:7px}.brand-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.brand-item{padding:11px}.brand-head{gap:7px}.brand-icon{width:45px;min-width:45px;height:36px}.brand-item h2{font-size:15px}.visual-grid .media{max-height:170px}.lead-media .media{max-height:190px}.app-layout .media{max-width:180px;margin:auto}.footer-grid{gap:20px}.article-index article{grid-template-columns:minmax(0,1fr)}.article-index article>a{justify-self:start}}
@media(max-width:350px){.card-grid{grid-template-columns:minmax(0,1fr)}.brand-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.brand-icon{width:38px;min-width:38px}.brand-item h2{font-size:14px}.topbar{gap:5px}.site-logo img{max-width:112px}.logo-fallback{font-size:22px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.mobile-drawer{transition:none}}