.ref-header,.ref-header *{box-sizing:border-box}
.ref-drawer-backdrop{display:none}
.ref-header .ref-highlight-badge{display:inline-block;width:fit-content;padding:0;border-radius:0;border:0;background:transparent;color:#c52b32;font:700 11px/1.4 Arial,Helvetica,sans-serif;letter-spacing:.02em;vertical-align:middle;white-space:nowrap}
.ref-header .ref-ai-label.ref-highlight-badge::before{content:"";display:inline-block;width:1em;height:1em;margin-right:4px;vertical-align:-.1em;background:currentColor;clip-path:polygon(50% 0,63% 36%,100% 50%,63% 64%,50% 100%,37% 64%,0 50%,37% 36%)}
.ref-header .ref-ai-label.ref-highlight-badge{display:table;margin-top:5px}
.ref-header .ref-free-badge{display:block;margin:4px 0 0;text-transform:uppercase}
.ref-header .ref-updated-label{display:block;margin:4px 0 0}
.ref-header .ref-highlight-badge.ref-course-update{display:block;margin-top:4px;color:#c52b32;text-transform:none}
.ref-header{position:fixed;inset:0 0 auto;width:auto;max-width:100%;min-width:0;margin:0;z-index:9999;background:#101114;font-family:Arial,Helvetica,sans-serif;color:#fff;box-shadow:0 1px 0 #ffffff18}
.ref-header [hidden]{display:none!important}
.ref-ai-label{display:block;font:500 12px/1.5 Arial;color:#9a702e;letter-spacing:.02em;margin-top:3px}
.ref-categories button .ref-category-label{font:500 14px/1.4 Arial;color:inherit}
@media(max-width:1150px){
 .ref-header .ref-mobile{background:#f8f7f4;border:1px solid #decba7;padding:18px;border-radius:20px;box-shadow:0 20px 50px #0006}
 .ref-header .ref-mobile details{border-color:#e8e3da;border-radius:14px;margin-bottom:12px}
 .ref-header .ref-mobile summary{font-size:15px;min-height:54px}
 .ref-header .ref-mobile .ref-course{font-size:14px;padding-block:12px}
 .ref-header .ref-mobile .ref-mobile-group{font-size:12px;letter-spacing:.04em;line-height:1.5}
 .ref-header .ref-mobile .ref-ai-label{text-transform:none;letter-spacing:0}
 .ref-header .ref-mobile>a{font-size:14px;min-height:46px}
 .ref-header .ref-mobile>.ref-demo-cta{display:flex;width:100%;align-items:center;justify-content:center;min-height:50px;margin-top:16px;padding:14px 18px;background:linear-gradient(110deg,#f3d695,#d8a447);border:1px solid #cfab69;border-radius:12px;color:#21180b;font-size:14px;font-weight:700;text-align:center;box-shadow:0 5px 16px #b9852920}
 .ref-header .ref-mobile>.ref-demo-cta:hover{background:#ebc477}
}
.ref-bar{position:relative;display:flex;align-items:center;gap:24px;max-width:1440px;margin:auto;padding:10px 28px;min-height:64px}
.ref-header a{text-decoration:none}
.ref-brand{display:flex;align-items:center;gap:8px;color:white;flex-shrink:0;font-size:17px;font-weight:700;line-height:1.2}
.ref-brand img{width:38px;height:38px;object-fit:contain}
.ref-brand b{color:#ffe09c}.ref-brand small{display:block;font-size:9px;letter-spacing:1.2px;margin-top:5px;font-weight:400}
.ref-nav{display:flex;align-items:center;gap:4px;flex:1;min-width:0}
.ref-nav>a,.ref-toggle{color:#fff;font:500 14px/1.4 Arial,Helvetica,sans-serif;padding:11px 12px;border:0;border-radius:7px;background:transparent;white-space:nowrap;display:flex;align-items:center;gap:9px;cursor:pointer}
.ref-nav>a:hover,.ref-toggle:hover{background:#ffffff18}
.ref-toggle[aria-expanded=true]{color:#17120b;background:linear-gradient(110deg,#f3d695,#d8a447)}
.ref-chevron{width:8px;height:8px;border-bottom:2px solid currentColor;border-right:2px solid currentColor;transform:rotate(45deg);margin-top:-4px}
.ref-toggle[aria-expanded=true] .ref-chevron{transform:rotate(225deg);margin-top:4px}
.ref-login{color:#f3d695;border:1px solid #b9955d;border-radius:7px;padding:9px 18px;font-size:14px;font-weight:600;flex-shrink:0}
.ref-login:hover{background:#fff;color:#101114}
.ref-mega{position:absolute;top:100%;left:220px;width:min(900px,calc(100% - 248px));background:#fff;color:#172033;display:grid;grid-template-columns:220px minmax(0,1fr);min-height:244px;border-radius:12px;box-shadow:0 16px 36px #00000026;overflow:hidden;border:1px solid #e5e9f5}
.ref-categories{padding:16px 0 16px 12px;border-right:1px solid #e0e4ed}
.ref-categories button{width:100%;display:flex;align-items:center;justify-content:space-between;gap:10px;text-align:left;background:transparent;border:0;border-right:2px solid transparent;border-radius:7px 0 0 7px;color:#536077;padding:13px 12px;font:500 14px/1.4 Arial;cursor:pointer}
.ref-categories button[aria-selected=true]{background:#fff6e5;border-right-color:#b9802d;color:#172033}
.ref-categories button span{font-size:20px;line-height:1;color:#8391a8}
.ref-categories button[aria-selected=true] span{color:#b9802d}
.ref-panels{padding:22px}.ref-panels h2{font:600 16px/1.4 Arial;margin:0 0 16px;color:#172033}
.ref-card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.ref-course{display:flex;align-items:center;gap:10px;border:1px solid #e9dfce;border-radius:9px;padding:12px;color:#172033;font-size:14px;line-height:1.45;min-height:66px}
.ref-course:hover{border-color:#b9802d;background:#fffbf2}
.ref-course-icon{display:grid;place-items:center;width:38px;height:38px;flex-shrink:0;background:#fff0d2;color:#8c5f20;border-radius:8px;font:600 15px/1 Arial}
.ref-all{display:inline-block;color:#8c5f20;font-size:14px;font-weight:700;margin-top:24px}
.ref-resources{position:relative}.ref-resource-panel{position:absolute;top:calc(100% + 10px);left:0;width:250px;padding:10px;background:#fff;border:1px solid #e9dfce;border-radius:12px;box-shadow:0 15px 35px #00000033}
.ref-resource-panel a{display:block;color:#172033;padding:12px;border-radius:6px;font-size:15px}.ref-resource-panel a:hover{background:#fff6e5}
.ref-header :is(a,button,summary):focus-visible{outline:3px solid #ffca65;outline-offset:3px}
.ref-menu-button{display:none;border:1px solid #ffffff70;background:transparent;color:#fff;border-radius:8px;width:44px;height:44px;font-size:23px;cursor:pointer}
.ref-mobile{background:#fff;color:#172033;max-height:calc(100dvh - 80px);overflow:auto;padding:14px 20px;border-top:1px solid #e9dfce}
.ref-mobile>a,.ref-mobile details>a:not(.ref-course),.ref-mobile summary{display:block;padding:14px 4px;color:#172033;font-size:16px;font-weight:600;cursor:pointer}
.ref-mobile details{border-bottom:1px solid #e9dfce}.ref-mobile summary{display:list-item;list-style-position:inside}
.ref-mobile-group{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:#627086;margin:20px 0 8px}
.ref-mobile .ref-course{min-height:64px;margin-bottom:8px;padding:10px;font-size:15px}.ref-mobile .ref-course-icon{width:38px;height:38px;font-size:15px}
@media(max-width:1350px){.ref-bar{gap:18px;padding-inline:22px}.ref-nav{gap:2px}.ref-nav>a,.ref-toggle{font-size:14px;padding-inline:10px}.ref-brand small{font-size:8px}.ref-mega{left:200px;width:min(900px,calc(100% - 222px));grid-template-columns:210px minmax(0,1fr)}}
@media(max-width:1150px){.ref-nav{display:none}.ref-menu-button{display:block}.ref-login{margin-left:auto}.ref-bar{min-height:64px;padding:10px 18px}.ref-mobile{max-height:calc(100dvh - 64px);padding:10px 16px}.ref-mobile summary,.ref-mobile>a{font-size:15px;padding-block:12px}}
@media(max-width:450px){.ref-bar{gap:10px;padding:10px 12px}.ref-brand{font-size:16px;gap:7px}.ref-brand img{width:36px;height:36px}.ref-brand small{font-size:7px;letter-spacing:.5px}.ref-login{padding:10px 12px;font-size:14px}}
@media(prefers-reduced-motion:reduce){.ref-header *{transition:none!important}}
.ref-header ~ main .qa-home-hero{padding-top:124px}
@media(min-width:1151px){
 .ref-mega .ref-categories{padding:22px 0 22px 16px}
 .ref-mega .ref-categories button{padding:16px 14px}
 .ref-mega .ref-panels{padding:28px}
 .ref-mega .ref-card-grid{gap:16px}
 .ref-mega .ref-course{padding:16px;min-height:74px}
}
@media(max-width:1150px){
 .ref-header .ref-bar{display:grid;grid-template-columns:minmax(0,1fr) auto 40px;gap:8px;width:100%;padding:10px 12px}
 .ref-header .ref-brand{min-width:0;flex-shrink:1;font-size:16px;gap:6px}
 .ref-header .ref-brand img{width:34px;height:34px;flex-shrink:0}
 .ref-header .ref-brand small{font-size:7px;letter-spacing:.2px;white-space:normal}
 .ref-header .ref-login{display:block;margin:0;padding:10px;font-size:13px;line-height:20px}
 .ref-header .ref-menu-button{width:40px;height:40px;min-width:0;padding:0;font-size:22px}
 .ref-mobile{margin:8px 12px 12px;border-radius:20px;border:1px solid #dbc9a7;background:linear-gradient(145deg,#fff,#f2ede4);padding:14px;max-height:calc(100dvh - 92px);box-shadow:0 18px 38px #0005}
 .ref-mobile details{background:#fff;border-radius:12px;padding:0 12px;margin-bottom:10px;border:1px solid #e7dfd2}
 .ref-mobile summary,.ref-mobile>a{font-size:14px;line-height:1.5;padding:12px 4px}
 .ref-mobile>a{display:inline-flex;width:49%;align-items:center;min-height:44px}
 .ref-mobile .ref-course{font-size:13px;line-height:1.4;padding:10px 0;border:0;border-bottom:1px solid #eee8df;border-radius:0;min-height:58px;margin:0}
 .ref-mobile .ref-course-icon{width:34px;height:34px;font-size:13px;background:linear-gradient(135deg,#f4dcab,#d2a052);color:#33230d}
 .ref-mobile .ref-mobile-group{font-size:10px;margin:12px 0 4px}
}
@media(max-width:760px){.ref-header ~ main .qa-home-hero{padding-top:104px}}
@media(max-width:1150px){
 .ref-mobile{padding:16px;background:#f6f3ed;border-radius:16px;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#c4a66b transparent}
 .ref-mobile::before{content:"EXPLORE QUICK ART";display:block;color:#8a652d;font-size:10px;font-weight:700;letter-spacing:.16em;padding:2px 4px 14px}
 .ref-mobile details{overflow:hidden;margin-bottom:12px;padding:0 14px;border-radius:12px;box-shadow:0 2px 5px #241a0d04}
 .ref-mobile summary{display:flex;align-items:center;justify-content:space-between;gap:12px;list-style:none;font-size:14px;font-weight:700;min-height:50px;padding:12px 0}
 .ref-mobile summary::-webkit-details-marker{display:none}
 .ref-mobile summary::after{content:"+";font-size:20px;font-weight:400;color:#94703a}
 .ref-mobile details[open]>summary{border-bottom:1px solid #eee6da;color:#89612a}
 .ref-mobile details[open]>summary::after{content:"−"}
 .ref-mobile .ref-course{display:flex;gap:12px;min-height:58px;font-weight:600;color:#242422}
 .ref-mobile .ref-course>span:last-child{flex:1;min-width:0}
 .ref-mobile .ref-course::after{content:"›";color:#aa9c88;font-size:21px}
 .ref-mobile .ref-course:last-child{border-bottom:0;margin-bottom:6px}
 .ref-mobile>a{width:calc(50% - 4px);padding:12px 10px;font-size:13px;font-weight:600;border-radius:8px;vertical-align:top}
 .ref-mobile a:hover{background:#ece4d6;color:#795421}
 .ref-menu-button[aria-expanded=true]{border-color:#d6b675;color:#f3d695;background:#ffffff08}
 .ref-menu-button[aria-expanded=true] span{font-size:0}
 .ref-menu-button[aria-expanded=true] span::after{content:"×";font-size:28px;line-height:1}
}
@media(max-width:700px){
 .ref-header .ref-bar{max-width:100%;padding-left:max(12px,env(safe-area-inset-left));padding-right:max(12px,env(safe-area-inset-right))}
 .ref-brand>span{min-width:0;overflow-wrap:anywhere}
 .ref-mobile{min-width:0;max-width:calc(100% - 24px)}
 .ref-mobile .ref-course{min-width:0;overflow-wrap:anywhere}
}
@media(max-width:1150px){
 .ref-drawer-backdrop{display:block;position:fixed;inset:64px 0 0;background:#090b10a6;backdrop-filter:blur(4px);z-index:-1}
 .ref-header .ref-mobile{position:fixed;top:64px;bottom:0;left:0;width:min(86vw,380px);max-width:100%;max-height:none;margin:0;padding:0;border:0;border-top:1px solid #ddd6c9;border-radius:0;background:#faf9f6;box-shadow:14px 0 38px #0003;display:flex;flex-direction:column;overflow:hidden;animation:ref-drawer-in .2s ease-out}
 .ref-header .ref-mobile::before{display:none}
 .ref-drawer-body{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:14px 22px 24px}
 .ref-header .ref-drawer-body>details{border:0;border-bottom:1px solid #e5e0d8;background:transparent;border-radius:0;box-shadow:none;padding:0;margin:0}
 .ref-header .ref-drawer-body summary{min-height:50px;font-size:15px;font-weight:600;padding:14px 0}
 .ref-header .ref-drawer-body> a{display:flex;width:100%;align-items:center;padding:14px 0;min-height:48px;font-size:15px;font-weight:500;color:#242424;border-radius:0}
 .ref-header .ref-drawer-body .ref-course{font-size:14px;background:#fff;padding:10px 8px;min-height:54px}
 .ref-header .ref-drawer-body .ref-mobile-group{padding-left:8px;margin:16px 0 8px}
 .ref-drawer-actions{display:grid;grid-template-columns:.65fr 1.35fr;gap:10px;padding:14px 12px calc(16px + env(safe-area-inset-bottom));background:#faf9f6;border-top:1px solid #e5e0d8;flex-shrink:0}
 .ref-header .ref-drawer-actions a{display:flex;align-items:center;justify-content:center;text-align:center;min-height:48px;padding:10px 8px;margin:0;border:1px solid #bd9147;border-radius:7px;font-size:13px;font-weight:700;line-height:1.4;text-decoration:none;color:#8b6226}
 .ref-header .ref-drawer-actions .ref-demo-cta{background:linear-gradient(110deg,#f3d695,#d8a447);color:#21180b}
}
@keyframes ref-drawer-in{from{transform:translateX(-100%)}to{transform:translateX(0)}}
@media(prefers-reduced-motion:reduce){.ref-header .ref-mobile{animation:none}}
@media(max-width:1150px){
 .ref-header .ref-mobile .ref-drawer-body .ref-course,
 .ref-header .ref-mobile .ref-drawer-body details>a:not(.ref-course){font-size:13px;line-height:1.45;font-weight:500;min-height:46px;padding:10px 8px}
 .ref-header .ref-mobile .ref-drawer-body .ref-course>span:last-child{font-size:inherit;line-height:inherit}
 .ref-header .ref-mobile .ref-drawer-body .ref-mobile-group{font-size:12px;line-height:1.4;letter-spacing:.02em;text-transform:none;margin-top:14px}
 .ref-header .ref-mobile .ref-ai-label{font-size:11px;line-height:1.4;margin-top:3px}
 .ref-header .ref-mobile .ref-course-icon{width:30px;height:30px;font-size:12px;border-radius:7px}
}