*{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:min(100% - 48px,1100px);margin-inline:auto}.site-header{background:#fff;border-bottom:1px solid #eee}.topbar{height:70px;display:flex;align-items:center;gap:24px}.brand{display:flex;align-items:center;white-space:nowrap;color:#c45a12;font-size:25px;line-height:1}.brand img{height:34px;width:auto;max-width:170px;object-fit:contain}.identity{display:flex;flex:1;align-items:center;gap:16px}.identity b{font-size:18px;letter-spacing:.12em;color:#1a1a1a}.identity span{font-size:13px;color:#666}.register{display:inline-flex;justify-content:center;align-items:center;min-width:90px;min-height:42px;border-radius:999px;background:linear-gradient(90deg,#ff8a00,#ffc44d);color:#2a210f;font-weight:700;white-space:nowrap}.register:hover{color:#1a1a1a}.primary{border-top:1px solid #f2f2f2}.primary-links{display:flex;justify-content:space-between;gap:10px;align-items:stretch;height:49px}.nav-link{padding:9px 6px;border-bottom:2px solid transparent;font-size:15px;white-space:nowrap}.nav-link.is-active{color:#c45a12;border-color:#ff8a00;font-weight:700}.quickbar{background:#f6f7f9}.quick-links{display:flex;gap:30px;align-items:center;min-height:43px;white-space:nowrap;overflow-x:auto;font-size:14px}.quick-links a{flex-shrink:0}.menu-toggle{display:none}.mobile-drawer,.drawer-mask{display:none}main.container{padding-top:30px;padding-bottom:62px;min-height:55vh}h1,h2,h3{color:#1a1a1a;line-height:1.4;letter-spacing:.01em}h1{font-size:32px;margin:10px 0 14px}h2{font-size:24px;margin:0 0 15px}h3{font-size:19px;margin:0 0 10px}p{margin:0 0 17px}.eyebrow{font-size:13px;font-weight:700;color:#c45a12;letter-spacing:.07em}.lede{font-size:17px;color:#555;max-width:850px}.page-header{margin-bottom:24px;border-bottom:1px solid #eee;padding-bottom:20px}.chips{display:flex;flex-wrap:wrap;gap:9px;margin:16px 0}.chips a{font-size:14px;background:#f6f7f9;border-radius:99px;padding:5px 14px}.content-layout{display:grid;grid-template-columns:minmax(0,7fr) minmax(235px,3fr);gap:36px;align-items:start}.article-section{padding:25px 0;border-bottom:1px solid #e8e8e8}.article-section:first-child{padding-top:0}.article-section h2{font-size:23px}.article-section p{line-height:1.82}.sidebar{background:#f6f7f9;border-radius:12px;padding:20px}.sidebar h2{font-size:19px}.sidebar a,.related a{display:block;padding:11px 0;border-bottom:1px solid #e2e2e2;font-size:15px}.related{margin:34px 0 0}.related h2{font-size:21px}.related a span{float:right;color:#c45a12}.feature-media{margin:0 0 24px}.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 center;display:block}.media-16x9{aspect-ratio:16/9}.media-3x4{aspect-ratio:3/4}.hero-media .media{height:250px;aspect-ratio:auto}.gallery-grid .media{height:205px;aspect-ratio:auto}.portrait-media{max-width:240px}.portrait-media .media{max-height:270px}.home-hero{display:grid;grid-template-columns:minmax(0,62fr) minmax(0,38fr);gap:24px;margin:26px 0 40px}.hero-index{padding:12px 0}.hero-index a{display:block;padding:13px 0;border-bottom:1px solid #e9e9e9}.hero-index strong,.stack-list strong{display:block;color:#1a1a1a}.hero-index span,.stack-list span{display:block;color:#666;font-size:14px}.home-section{padding:30px 0;border-top:1px solid #ececec}.home-section>p{color:#666}.four-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.card{min-width:0;padding:20px;border:1px solid rgba(0,0,0,.08);border-radius:12px;background:#fff}.card h3{font-size:18px}.card p{font-size:15px;color:#666}.card a,.text-link{color:#a64c0c;font-weight:700}.two-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.stack-list a{display:block;padding:12px 0;border-bottom:1px solid #e5e5e5}.split-feature{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,4fr);gap:36px}.numbered{padding-left:23px}.numbered li{padding:6px 0}.news-list .entry{padding:17px 0;border-bottom:1px solid #e8e8e8}.news-list h3{margin:0 0 4px}.news-list p{font-size:15px;color:#666;margin:0}.brand-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.brand-tile{border:1px solid rgba(0,0,0,.08);padding:17px;border-radius:12px;min-width:0}.brand-tile h3{font-size:18px;margin:8px 0}.brand-tile p{font-size:14px;color:#555}.brand-head{display:flex;align-items:center;gap:11px}.brand-logo{width:58px;height:50px;flex-shrink:0;background:#f6f7f9;border-radius:7px;display:flex;align-items:center;justify-content:center;overflow:hidden}.brand-logo img{width:100%;height:100%;object-fit:contain}.notice{padding:20px 22px;background:#f6f7f9;border-radius:10px;margin:25px 0}.faq-item{padding:20px 0;border-bottom:1px solid #e8e8e8}.faq-item h2{font-size:19px}.site-footer{background:#1a1a1a;color:#f5f5f5;padding:46px 0 25px}.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:34px}.footer-grid h2{font-size:17px;color:#fff}.footer-grid p{font-size:14px;color:#ccc}.footer-grid a{display:block;color:#e4e4e4;font-size:14px;padding:3px 0}.footer-grid a:hover{color:#ffc44d}.footer-brand{font-size:23px;color:#ffc44d;font-weight:bold;margin-bottom:12px}.footer-brand img{max-height:34px;width:auto;object-fit:contain}.footer-bottom{margin-top:30px;border-top:1px solid #404040;padding-top:20px;font-size:13px;color:#bbb;display:flex;gap:20px;flex-wrap:wrap}.mobile-bottom{display:none}.brand-intro{background:#f6f7f9;padding:18px;border-radius:10px;margin-bottom:22px}.app-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:38px;align-items:start}
@media(max-width:980px){.container{width:min(100% - 40px,1100px)}.topbar{height:58px;justify-content:space-between;gap:12px}.identity,.primary,.quickbar{display:none}.brand{margin:auto}.brand img{height:28px;max-width:125px}.register{min-width:72px;min-height:36px}.menu-toggle{display:flex;flex-direction:column;justify-content:center;gap:5px;width:37px;height:40px;padding:7px;border:0;background:transparent}.menu-toggle span{height:2px;width:22px;background:#333;display:block}.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:14px 19px;border-bottom:1px solid #eee}.drawer-close{border:0;background:none;font-size:30px;line-height:1.1}.drawer-group{padding:12px 20px;border-bottom:1px solid #eee}.drawer-group h2{font-size:15px;color:#c45a12;margin:4px 0}.drawer-group a{display:block;font-size:15px;min-height:41px;padding:7px 0}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;height:62px;z-index:9000;background:#fff;border-top:1px solid #ddd}.mobile-bottom a{text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:13px;line-height:1.35}.mobile-bottom span{font-size:20px;color:#c45a12}.site-footer{padding-bottom:85px}.content-layout{grid-template-columns:minmax(0,1fr)}.sidebar{order:2}.four-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:640px){body{font-size:15px}.container{width:calc(100% - 30px)}main.container{padding-top:22px;padding-bottom:42px}h1{font-size:27px}h2{font-size:21px}h3{font-size:17px}.lede{font-size:15px}.home-hero,.two-grid,.split-feature,.app-layout{grid-template-columns:minmax(0,1fr)}.home-hero{gap:10px}.hero-media .media{height:175px}.gallery-grid .media{height:155px}.four-grid,.brand-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.card,.brand-tile{padding:13px}.card h3,.brand-tile h3{font-size:16px}.card p,.brand-tile p{font-size:14px}.article-section h2{font-size:20px}.footer-grid{gap:25px 14px}.portrait-media{max-width:230px}.app-layout .portrait-media{margin:auto}.home-section{padding:25px 0}}
@media(max-width:340px){.four-grid{grid-template-columns:1fr}.brand-head{flex-wrap:wrap}.brand-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.mobile-drawer{transition:none}}