*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:#333;font:16px/1.78 Arial,"PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}a:hover{color:#c45a12}button{font:inherit;cursor:pointer}img{max-width:100%}.container{width:calc(100% - 48px);max-width:1100px;margin:auto}.skip-link{position:absolute;left:-9999px;z-index:20000}.skip-link:focus{left:12px;top:10px;background:#fff;padding:8px}.site-header{background:#fff;border-bottom:1px solid #eee}.masthead{height:70px;display:flex;align-items:center;gap:22px}.brand{display:flex;align-items:center;flex:none}.brand img{max-width:146px;height:34px;width:auto;object-fit:contain}.brand strong{font-size:28px;letter-spacing:-1px;color:#1a1a1a}.brand strong span{color:#ff8a00}.brand-intro{display:flex;flex-direction:column;line-height:1.3;gap:3px}.brand-intro strong{letter-spacing:2px;color:#222;font-size:15px}.brand-intro small{color:#666;font-size:12px}.register{margin-left:auto;background:linear-gradient(90deg,#ff8a00,#ffc44d);color:#252018!important;display:inline-flex;align-items:center;justify-content:center;min-width:90px;height:42px;border-radius:30px;font-weight:700}.primary-nav{border-top:1px solid #f2f2f2}.nav-line{display:flex;align-items:center;justify-content:space-between;gap:12px;height:50px}.nav-line a{height:100%;display:flex;align-items:center;justify-content:center;white-space:nowrap;font-size:15px;border-bottom:2px solid transparent}.nav-line a.active{color:#c45a12;border-bottom-color:#ff8a00;font-weight:bold}.quick-bar{background:#f6f7f9}.quick-line{display:flex;align-items:center;gap:24px;min-height:38px;font-size:13px;flex-wrap:wrap}.quick-line>span{color:#999}.quick-line a{color:#555}.menu-button{display:none}.mobile-drawer,.drawer-mask{display:none}main{min-height:60vh}.eyebrow{font-size:13px;letter-spacing:1.5px;color:#c45a12;font-weight:bold}.hero-intro{padding:36px 0 22px}.hero-intro h1{font-size:36px;line-height:1.35;margin:6px 0 12px;color:#1a1a1a}.hero-intro>p{max-width:900px;margin:0;color:#666}.feature-grid{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);gap:24px;align-items:start}.feature-grid .feature-side{border-top:2px solid #ff8a00}.feature-side article{padding:15px 0;border-bottom:1px solid #eee}.feature-side h2{font-size:18px;margin:0 0 4px;line-height:1.4}.feature-side p{font-size:14px;margin:0;color:#666}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:12px;background:#f6f7f9}.media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center;display:block}.media-placeholder{height:100%;width:100%;background:#f6f7f9}.media-16x9{aspect-ratio:16/9}.media-3x4{aspect-ratio:3/4}.feature-grid>.media{max-height:280px}.feature-grid>.media img{max-height:280px}.section{padding:37px 0}.section.alt{background:#f6f7f9}.section-head{display:flex;justify-content:space-between;align-items:end;gap:12px;margin:0 0 19px}.section-head h2{font-size:25px;line-height:1.4;color:#1a1a1a;margin:0}.section-head a,.text-link{font-size:14px;color:#c45a12}.section-head p{margin:6px 0 0;color:#666;font-size:14px}.four-grid,.brand-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:17px}.category-card,.article-panel,.brand-card,.info-card{background:#fff;border:1px solid rgba(0,0,0,.08);border-radius:12px;padding:18px;min-width:0}.category-card h3,.article-panel h3{font-size:18px;line-height:1.4;margin:0 0 8px;color:#1a1a1a}.category-card p,.info-card p{font-size:14px;color:#666;margin:0 0 12px}.split{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:28px}.two-col{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:23px}.split h3,.two-col h3{margin:0 0 10px;font-size:20px}.split p,.two-col p{margin:0 0 12px}.short-list{list-style:none;padding:0;margin:0}.short-list li{padding:12px 0;border-bottom:1px solid #e8e8e8}.short-list strong{display:block;font-size:16px}.short-list p{font-size:14px;color:#666;margin:2px 0 0}.visual-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.visual-grid figcaption{padding:10px 2px;color:#666;font-size:14px}.visual-grid figcaption strong{display:block;font-size:17px;color:#1a1a1a}.visual-grid figure{margin:0}.article-list{border-top:1px solid #ddd}.article-list article{padding:16px 0;border-bottom:1px solid #e6e6e6;display:flex;gap:20px;justify-content:space-between}.article-list h3{margin:0 0 6px;font-size:18px}.article-list p{margin:0;color:#666;font-size:14px}.article-list a{flex:none;align-self:center;color:#c45a12;font-size:14px}.brand-card{padding:13px;display:flex;align-items:center;gap:10px}.brand-card .media{width:62px;min-width:62px;border-radius:7px}.brand-card h3{font-size:15px;line-height:1.5;margin:0}.brand-card p{font-size:12px;color:#666;margin:3px 0 0}.notice{font-size:14px;color:#666;background:#f6f7f9;padding:16px;border-left:3px solid #ff8a00;border-radius:6px}.page-heading{padding:35px 0 25px;border-bottom:1px solid #eee}.page-heading .crumb{color:#999;font-size:13px}.page-heading h1{font-size:31px;line-height:1.35;color:#1a1a1a;margin:8px 0}.page-heading p{color:#666;margin:0;max-width:830px}.tag-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.tag-links a{font-size:13px;padding:4px 12px;border:1px solid #eee;border-radius:24px;color:#555}.content-layout{display:grid;grid-template-columns:minmax(0,7fr) minmax(220px,3fr);gap:32px;padding:30px 0 55px}.prose h2{font-size:24px;line-height:1.4;color:#1a1a1a;margin:30px 0 13px}.prose h2:first-child{margin-top:0}.prose h3{font-size:19px;color:#1a1a1a;margin:20px 0 8px}.prose p{line-height:1.8;margin:0 0 17px}.prose .media{max-height:265px;margin:17px 0 23px}.prose .media img{max-height:265px}.sidebar{align-self:start}.sidebox{padding:18px;background:#f6f7f9;border-radius:12px;margin-bottom:18px}.sidebox h2{font-size:17px;margin:0 0 12px}.sidebox a{display:block;padding:9px 0;font-size:14px;border-bottom:1px solid #e5e5e5}.sidebox a:last-child{border:0}.fineprint{font-size:13px;color:#666}.wide-content{padding:30px 0 58px}.brand-full-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.brand-full-grid .brand-card{align-items:flex-start;padding:17px}.brand-full-grid .brand-card .media{width:104px;min-width:104px}.brand-full-grid .brand-card h2{font-size:18px;margin:0}.brand-full-grid .brand-card p{font-size:14px;line-height:1.7}.qa{padding:16px 0;border-bottom:1px solid #ddd}.qa h2{font-size:19px!important;margin:0 0 8px!important}.qa p{margin:0}.site-footer{background:#1a1a1a;color:#f5f5f5}.footer-grid{display:grid;grid-template-columns:1.35fr repeat(3,1fr);gap:25px;padding:37px 0 22px}.footer-grid h2{font-size:16px;margin:0 0 11px;color:#fff}.footer-grid p{color:#c7c7c7;font-size:13px;margin:8px 0}.footer-grid a{display:block;color:#eee;font-size:13px;padding:3px 0}.footer-grid a:hover{color:#ffc44d}.foot-logo img{height:32px;width:auto;max-width:110px;object-fit:contain}.foot-bottom{border-top:1px solid #3b3b3b;display:flex;justify-content:space-between;gap:20px;padding:17px 0 22px;color:#ccc;font-size:12px}.bottom-nav{display:none}:focus-visible{outline:3px solid #c45a12;outline-offset:3px}@media(max-width:980px){.container{width:calc(100% - 40px)}.masthead{height:58px}.brand img{height:28px}.menu-button{display:flex;flex-direction:column;gap:5px;justify-content:center;align-items:center;padding:8px 5px;border:0;background:transparent;width:35px;height:40px}.menu-button span{width:22px;height:2px;background:#333;border-radius:2px}.masthead .brand{margin:auto}.brand-intro,.primary-nav,.quick-bar{display:none}.register{margin:0;min-width:72px;height:36px;font-size:14px}.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-top{display:flex;justify-content:space-between;align-items:center;padding:13px 18px;border-bottom:1px solid #eee;font-weight:bold}.drawer-top button{background:transparent;border:0;font-size:29px;width:42px;height:42px}.drawer-group{padding:12px 18px;border-bottom:1px solid #eee}.drawer-group h2{font-size:13px;color:#c45a12;margin:0 0 5px}.drawer-group a{display:block;min-height:42px;padding:8px 5px;font-size:15px}.drawer-group a[aria-current]{font-weight:bold;color:#c45a12}.bottom-nav{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;height:62px;background:#fff;z-index:1000;border-top:1px solid #eee;padding-bottom:env(safe-area-inset-bottom)}.bottom-nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:12px;line-height:1.4}.bottom-nav span{font-size:21px;color:#c45a12}body{padding-bottom:62px}.content-layout{grid-template-columns:1fr}.sidebar{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.sidebox{margin:0}}@media(max-width:768px){.container{width:calc(100% - 32px)}.hero-intro{padding:26px 0 18px}.hero-intro h1{font-size:28px}.page-heading{padding:25px 0 20px}.page-heading h1{font-size:26px}.feature-grid,.split,.two-col{grid-template-columns:1fr;gap:18px}.four-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.brand-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.brand-full-grid{grid-template-columns:1fr}.feature-grid>.media{max-height:190px}.feature-grid>.media img{max-height:190px}.section{padding:28px 0}.section-head h2{font-size:21px}.visual-grid{grid-template-columns:1fr}.visual-grid .media{max-height:190px}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.foot-bottom{flex-direction:column;gap:5px}.prose h2{font-size:21px}.sidebar{grid-template-columns:1fr}.article-list article{display:block}.article-list a{display:inline-block;margin-top:8px}.content-layout{padding:23px 0 40px}}@media(max-width:360px){.four-grid{grid-template-columns:1fr}.hero-intro h1{font-size:26px}.brand-full-grid .brand-card .media{width:75px;min-width:75px}.footer-grid{gap:12px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.mobile-drawer{transition:none}}
