*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#101820;color:#F6F3EA;font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.82;overflow-x:clip}a{color:inherit;text-decoration:none}a:hover{color:#D6B56E}a:focus-visible,button:focus-visible{outline:3px solid #D6B56E;outline-offset:3px}button{font:inherit;cursor:pointer}img{max-width:100%;height:auto;object-fit:contain;object-position:center;vertical-align:middle}p{margin:0 0 1.15em;overflow-wrap:anywhere}h1,h2,h3{line-height:1.32;overflow-wrap:anywhere}h1{font-size:35px;margin:.32em 0 .6em}h2{font-size:24px;margin:0 0 18px}h3{font-size:19px;margin:0 0 10px}.wrap{width:min(1120px,calc(100% - 56px));margin-inline:auto}.skip{position:absolute;top:-100px;left:12px;background:#F4F2EC;color:#26323A;padding:8px;z-index:110}.skip:focus{top:12px}.site-head{background:#101820;border-bottom:1px solid #34424a}.top{height:68px;display:flex;justify-content:space-between;align-items:center;gap:16px}.brand{display:flex;align-items:center;gap:12px;min-width:0}.brand .logo{max-width:132px;max-height:36px;width:auto;height:auto}.brand-text{display:flex;flex-direction:column;line-height:1.25}.brand-text strong{font-size:20px;white-space:nowrap}.brand-text small{font-size:10px;letter-spacing:1.5px;color:#C7CCD0}.top-actions{display:flex;align-items:center;gap:20px}.app-shortcut{font-size:14px}.menu-toggle,.drawer-close{background:transparent;border:1px solid #63717a;border-radius:10px;color:#F6F3EA;min-height:44px;padding:8px 15px}.main-nav{background:#18232D}.nav-inner{min-height:48px;display:flex;align-items:stretch;gap:clamp(13px,2.4vw,36px);flex-wrap:wrap}.nav-inner a{display:flex;align-items:center;white-space:nowrap;min-height:48px;font-size:15px;border-bottom:2px solid transparent}.nav-inner a[aria-current=page]{border-color:#D6B56E;font-weight:700}.hero,.section{padding-block:64px}.hero-grid,.split,.app-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:center}.eyebrow{color:#D6B56E;letter-spacing:.15em;font-size:13px;font-weight:700}.lead{font-size:17px;color:#C7CCD0;line-height:1.85}.hero .lead{max-width:630px}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:8px 18px;border-radius:10px;border:1px solid #D6B56E;font-size:15px;font-weight:600;color:#F6F3EA}.btn.primary{background:#D6B56E;color:#101820}.btn:hover{background:#f1d393;color:#101820}.visual{display:flex;justify-content:center;align-items:center;min-width:0}.visual img{width:auto;height:auto;max-width:100%;max-height:300px}.visual .banner{max-height:300px}.visual .app-image{max-width:220px;max-height:330px}.visual .brand-image{max-height:260px}.light{background:#F4F2EC;color:#26323A}.light .lead,.light .muted{color:#52616A}.light a.text-link{color:#6c511f}.light a.text-link:hover{text-decoration:underline}.section-head{max-width:760px;margin-bottom:30px}.section-head p{color:#C7CCD0}.light .section-head p{color:#53616b}.text-link{color:#D6B56E;font-weight:700;text-decoration:underline;text-underline-offset:5px}.number-steps{max-width:810px;list-style:none;padding:0;margin:0}.number-steps li{display:grid;grid-template-columns:54px 1fr;gap:18px;padding:20px 0;border-top:1px solid #c7c2b6}.number-steps b{color:#80672f;font-size:25px}.number-steps p{margin:5px 0}.rule-layout{display:grid;grid-template-columns:1fr 2fr;gap:50px}.rule-layout aside{border-top:2px solid #D6B56E;padding-top:16px}.rule-layout article{max-width:760px}.two-unequal{display:grid;grid-template-columns:2fr 1fr;gap:20px}.panel{border:1px solid #34424a;background:#18232D;border-radius:12px;padding:26px;min-width:0}.panel.light-panel{background:#F4F2EC;color:#26323A}.panel p:last-child{margin-bottom:0}.timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.timeline article{border-top:2px solid #D6B56E;padding-top:20px}.timeline span{color:#D6B56E;font-size:13px}.wide-reading{max-width:830px}.archive-choice{display:grid;grid-template-columns:1fr 1.2fr;gap:22px}.directory{margin:0;padding:0;list-style:none}.directory li{padding:13px 0;border-bottom:1px solid #52616a}.directory a{display:flex;justify-content:space-between;gap:12px}.banner-section{background:#18232D;border-top:1px solid #354450;border-bottom:1px solid #354450}.service-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.service-links a{border-top:1px solid #D6B56E;padding:18px 0;display:block}.site-foot{border-top:1px solid #394954;background:#0c1319;color:#C7CCD0;padding:44px 0 92px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:42px}.footer-grid h2{font-size:17px;color:#F6F3EA}.footer-grid a:not(.footer-brand){display:block;font-size:14px;padding:2px 0}.footer-brand{color:#F6F3EA;font-weight:700;font-size:19px}.footer-last{border-top:1px solid #394954;padding-top:20px;margin-top:32px;display:flex;justify-content:space-between;gap:16px;font-size:13px}.drawer-backdrop{position:fixed;inset:0;background:#050a0dbb;z-index:90}.drawer{position:fixed;top:0;right:0;bottom:0;width:min(360px,100vw);background:#18232D;z-index:91;box-shadow:-10px 0 32px #0007;display:flex;flex-direction:column}.drawer[hidden],.drawer-backdrop[hidden]{display:none!important}.menu-open{overflow:hidden}.drawer-head{padding:16px 20px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #46515a;gap:12px}.drawer-body{overflow-y:auto;overscroll-behavior:contain;padding:14px 20px 35px}.drawer-group{margin:0 0 22px}.drawer-group h2{font-size:14px;color:#D6B56E;margin:0 0 8px}.drawer-links{display:grid;grid-template-columns:1fr 1fr;gap:4px 14px}.drawer-links a{font-size:14px;min-height:44px;display:flex;align-items:center}.drawer-links a[aria-current=page]{font-weight:700;color:#D6B56E}.mobile-nav{display:none}.page-head{padding:56px 0 30px}.page-head .lead{max-width:760px}.quick-index{display:flex;flex-wrap:wrap;gap:9px 16px;max-width:790px;margin-top:22px}.quick-index a{font-size:14px;color:#D6B56E;text-decoration:underline;text-underline-offset:4px}.article-layout{display:grid;grid-template-columns:minmax(0,760px) minmax(0,1fr);gap:52px;align-items:start}.article-body{min-width:0}.article-section{padding:33px 0;border-top:1px solid #3f4d55;scroll-margin-top:20px}.article-section p{max-width:760px;line-height:1.86}.article-visual{margin:6px 0 30px;display:flex;justify-content:flex-start}.article-visual img{max-width:min(100%,460px);max-height:300px;width:auto;height:auto}.sidebar{background:#18232D;border-radius:12px;padding:20px;border:1px solid #3d4a54}.sidebar h2{font-size:18px}.sidebar a{display:block;padding:8px 0;border-bottom:1px solid #3d4a54;font-size:14px}.related{padding:30px 0 64px}.related h2{font-size:20px}.related-links{display:flex;flex-wrap:wrap;gap:12px}.related-links a{border:1px solid #D6B56E;border-radius:9px;padding:8px 14px;color:#F6F3EA}.faq-item{border-top:1px solid #3f4d55;padding:25px 0;scroll-margin-top:20px}.faq-item h2{font-size:21px}.faq-item p{max-width:760px}.topics-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.topics-grid article:nth-child(3n){grid-column:span 2}.topics-grid article{border-top:2px solid #D6B56E;padding:18px 22px;background:#18232D;border-radius:10px}.topics-grid h2{font-size:22px}.topics-grid p{max-width:720px}.mini-label{color:#D6B56E;font-size:13px}.muted{color:#C7CCD0}section[id]{scroll-margin-top:18px}@media(max-width:900px){.wrap{width:calc(100% - 48px)}.hero-grid,.split,.app-grid{gap:25px}.timeline{grid-template-columns:repeat(2,minmax(0,1fr))}.article-layout{grid-template-columns:minmax(0,1fr)}.sidebar{display:none}.footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:22px}}@media(max-width:740px){.main-nav{display:none}.app-shortcut{display:none}.two-unequal,.archive-choice,.rule-layout{grid-template-columns:1fr}.hero-grid,.split,.app-grid{grid-template-columns:1fr}.hero-grid .visual{justify-content:flex-start}.section,.hero{padding-block:42px}.service-links{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:span 2}.mobile-nav{position:fixed;bottom:0;left:0;right:0;z-index:50;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));background:#18232D;border-top:1px solid #52616a;min-height:58px;padding-bottom:env(safe-area-inset-bottom)}.mobile-nav a,.mobile-nav button{min-height:58px;background:none;border:0;color:#F6F3EA;display:flex;align-items:center;justify-content:center;font-size:13px;white-space:nowrap}.mobile-nav [aria-current=page]{color:#D6B56E;font-weight:700}.site-foot{padding-bottom:calc(90px + env(safe-area-inset-bottom))}}@media(max-width:599px){.wrap{width:calc(100% - 32px)}.top{height:60px}.brand .logo{max-width:90px;max-height:31px}.brand-text strong{font-size:16px}.brand-text small{font-size:8px;letter-spacing:.6px}.top-actions{gap:5px}.menu-toggle{padding:7px 10px;font-size:13px}.hero,.section{padding-block:34px}h1{font-size:27px}h2{font-size:21px}.lead{font-size:16px}.panel{padding:18px}.two-unequal,.archive-choice,.service-links,.timeline,.topics-grid{grid-template-columns:1fr}.topics-grid article:nth-child(3n){grid-column:auto}.article-visual img,.visual img{max-height:240px}.visual .banner{max-height:190px}.visual .app-image{max-height:300px;max-width:220px}.article-section{padding:28px 0}.page-head{padding:36px 0 24px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.footer-last{flex-direction:column}.number-steps li{grid-template-columns:38px 1fr;gap:10px}.number-steps b{font-size:21px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}