body.product-ui,body.online-product{--accent:#0866d9;--accent-dark:#0754b2;--wash:#eaf2ff;--ink:#20242c;--muted:#626b79;--paper:#fff;--bg:#f5f5f7;--line:#e0e3e9;--radius:20px;background:var(--bg);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-size:15px;line-height:1.55}
body.product-ui[data-appearance=dark]{--accent:#70acff;--accent-dark:#94c1ff;--wash:#223551;--ink:#f2f4f8;--muted:#adb6c4;--paper:#1c2028;--bg:#12151b;--line:#343b48}
.product-ui .shell{grid-template-columns:220px minmax(0,1fr)}.product-ui .sidebar{background:var(--paper);padding:28px 16px;top:0;border-color:var(--line)}.product-ui.workspace-ready .sidebar{top:50px;height:calc(100dvh - 50px)}.product-ui .brand{padding:0 12px 28px;gap:8px}.product-ui .brand img{display:none}.product-ui .brand:before{content:'P';display:grid;place-items:center;width:44px;height:44px;border-radius:13px;background:#0866d9;color:#fff;font-size:31px;font-weight:750;line-height:1}.product-ui .brand strong{font-size:25px}.product-ui .brand span{font-size:12px}.product-ui #navigation{display:grid;grid-template-columns:1fr;gap:6px}.product-ui .nav{border-radius:12px;min-height:48px;font-size:14px;padding:12px;gap:12px;white-space:normal}.product-ui .nav:hover{background:var(--bg)}.product-ui .nav.active{background:var(--wash);color:var(--accent-dark)}.product-ui .quote{display:none}.product-ui .sidebar-bottom{padding:24px 2px 0}.product-ui .version{color:var(--muted)}.product-ui .workspace{min-width:0}.product-ui #screen{max-width:1280px;width:100%;padding:36px 40px 64px;margin:auto}.product-ui .topbar{padding:18px 40px;margin:0;min-height:76px;border-bottom:1px solid var(--line);background:var(--bg)}.product-ui .top-actions{gap:12px}.product-ui .balance,.product-ui .streak{background:transparent;color:var(--muted);border:0;font-size:13px}.product-ui h1{font-size:clamp(28px,3vw,38px);letter-spacing:-1.1px;line-height:1.2}.product-ui h2{font-size:20px;line-height:1.3;letter-spacing:-.45px}.product-ui h3{font-size:17px}.product-ui .eyebrow{font-size:11px;letter-spacing:1.3px;color:var(--muted);font-weight:650;margin-bottom:12px}.product-ui .sub,.product-ui .muted,.product-ui small{color:var(--muted)}.product-ui .panel{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:0 3px 14px #10182803;min-width:0}.product-ui .button,.product-ui .choice{border:1px solid var(--line);border-radius:11px;min-height:44px;background:var(--paper);color:var(--ink);font-weight:550;box-shadow:none;white-space:normal}.product-ui .button:hover,.product-ui .choice:hover{background:var(--wash);border-color:var(--accent)}.product-ui .primary{background:#0866d9;color:#fff;border-color:#0866d9}.product-ui .primary:hover{background:#0754b2;color:#fff}.product-ui .button:disabled{opacity:.45}.product-ui .choice.selected{background:var(--wash);border:2px solid var(--accent);color:var(--ink)}.product-ui input,.product-ui select,.product-ui textarea{min-height:46px;border:1px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink);max-width:100%;font-size:16px}.product-ui .field{min-width:0}.product-ui .field input,.product-ui .field select{width:100%}.product-ui :focus-visible{outline:3px solid var(--accent);outline-offset:3px}.product-ui .pill{display:inline-flex;width:fit-content;border-radius:7px;padding:4px 9px;background:var(--wash);color:var(--accent-dark);font-size:12px;font-weight:600}.product-ui .meter{height:7px;border-radius:9px;overflow:hidden;background:var(--line);margin:18px 0}.product-ui .meter i{display:block;height:100%;background:var(--accent);border-radius:9px}.product-home-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:22px;margin-top:28px}.product-ui .product-continue{padding:30px;background:var(--paper)}.product-continue h2{margin-top:24px;font-size:27px}.product-continue>.button{margin-top:16px;min-width:160px}.product-quick-grid,.product-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:22px}.product-quick-grid .panel{display:flex;flex-direction:column;align-items:start}.product-quick-grid .panel p{flex:1}.product-icon{display:grid;place-items:center;width:42px;height:42px;background:var(--wash);color:var(--accent);border-radius:12px;margin-bottom:20px}.product-number{font-size:46px;letter-spacing:-2px}.product-number small{font-size:15px;letter-spacing:0;font-weight:400}.product-daily .panel-head .button{font-size:12px;padding:8px}.product-section{margin-top:30px}.product-catalog{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.product-catalog .panel{display:flex;flex-direction:column;align-items:start;gap:12px}.product-catalog p{flex:1;margin:0}.product-catalog h3{margin:0}.section-gap{margin-top:24px}.product-empty{padding:30px 16px;text-align:center;color:var(--muted)}.product-planned{padding:16px;color:var(--muted);text-align:center}.product-word-tabs,.product-ui .actions{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}.product-stats .panel{display:flex;flex-direction:column;gap:12px}.product-stats strong{font-size:30px}.product-profile{display:flex;align-items:center;gap:16px;margin-bottom:24px}.product-profile .avatar{width:58px;height:58px;flex-basis:58px;background:var(--wash);color:var(--accent);font-size:24px}.product-profile p{margin:0}.product-setting-group{margin-top:16px}.product-setting-group>summary{cursor:pointer;min-height:44px;align-content:center;font-weight:600}.product-setting-group[open]>summary{margin-bottom:20px}.product-ui #product-results{display:grid;gap:10px}.product-ui #product-results .button{text-align:left}.product-ui .pilot-test{max-width:800px;margin:0 auto}.product-ui .pilot-question{font-size:clamp(21px,3vw,28px);line-height:1.5;color:var(--ink);background:transparent;text-align:left;padding:12px 0;white-space:normal}.product-ui .pilot-options{margin:24px 0;display:grid;gap:12px}.product-ui .pilot-options .choice{text-align:left;padding:16px;display:flex;gap:12px;align-items:center}.product-ui .feedback{background:#edf8f2;color:#185738;border:1px solid #a6d4b9;border-radius:14px;padding:20px}.product-ui .feedback.error{background:#fff3ed;color:#843c1c;border-color:#e9b49c}.product-ui[data-appearance=dark] .feedback{background:#173b2c;color:#b9edce}.product-ui[data-appearance=dark] .feedback.error{background:#472a20;color:#ffceb5}.product-ui .practice-passage{background:var(--bg);color:var(--ink);line-height:1.8}.product-ui .a1-module,.product-ui .a1-topic{background:var(--paper);border-color:var(--line);box-shadow:none}.product-ui .a1-topic{border-radius:12px}.product-ui .a1-topic h3{color:var(--ink)}.product-ui .level-tile.active{background:var(--wash);border-color:var(--accent);color:var(--ink)}.product-ui dialog{width:min(580px,calc(100% - 32px));max-height:90dvh;border:1px solid var(--line);border-radius:22px;background:var(--paper);color:var(--ink);padding:26px}.product-ui dialog::backdrop{background:#11182766;backdrop-filter:blur(4px)}.product-ui #notice{background:var(--ink);color:var(--paper);border-radius:12px;max-width:calc(100% - 32px)}.skip-link{position:fixed;top:-100px;left:20px;z-index:20000;padding:12px;background:var(--paper);color:var(--accent)}.skip-link:focus{top:12px}#product-bottom{display:none}.product-ui #cloud-bar{background:var(--paper);color:var(--muted);border-color:var(--line);font-size:12px}.product-ui #cloud-bar[data-problem=true]{background:#fff3ed;color:#843c1c}.product-ui.cloud-pending #product-bottom{pointer-events:none;opacity:.5}.product-ui .icon-button{padding:9px;min-width:44px}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
body.online-product{margin:0}.online-product .card,.online-product .panel{background:var(--paper);border:1px solid var(--line);border-radius:22px;box-shadow:0 8px 40px #18233b06}.online-product button{min-height:46px;border-radius:11px}.online-product .primary,.online-product button[type=submit]{background:#0866d9;color:white}.online-product input{border-radius:10px;min-height:48px}.online-product header img{filter:hue-rotate(210deg)}
@media(min-width:1600px){.product-ui #screen{padding-top:48px}.product-home-grid{gap:28px}}
@media(max-width:1024px){.product-ui .shell{grid-template-columns:190px minmax(0,1fr)}.product-ui #screen{padding:28px 24px 50px}.product-ui .topbar{padding:16px 24px}.product-quick-grid{grid-template-columns:1fr}.product-quick-grid .panel{display:block}.product-home-grid{grid-template-columns:1fr}.product-ui .brand span{font-size:11px}.product-ui .panel{padding:22px}}
@media(max-width:700px){.product-ui .shell{display:block}.product-ui .sidebar{display:none}.product-ui #screen{padding:24px 16px 110px}.product-ui .topbar{padding:12px 16px;min-height:64px}.product-ui .breadcrumb{font-size:12px;max-width:none}.product-ui .breadcrumb-label,.product-ui .breadcrumb>span{display:none}.product-ui .top-actions{gap:6px}.product-ui .streak{display:none}.product-ui .panel{padding:20px;border-radius:17px}.product-ui h1{font-size:29px}.product-home-grid{gap:16px;margin-top:20px}.product-ui .product-continue{padding:24px}.product-catalog{grid-template-columns:1fr}.product-stats{gap:8px}.product-stats .panel{padding:12px;font-size:11px}.product-stats strong{font-size:25px}.product-ui #product-bottom:not([hidden]){display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;position:fixed;bottom:0;left:0;right:0;z-index:9000;background:var(--paper);border-top:1px solid var(--line);padding:6px 4px max(8px,env(safe-area-inset-bottom));box-shadow:0 -5px 20px #10182804}.product-ui #product-bottom .nav{display:flex;flex-direction:column;gap:3px;justify-content:center;min-width:0;padding:7px 2px;font-size:10px;min-height:54px;border-radius:9px}.product-ui #product-bottom svg{width:21px;height:21px}.product-ui #notice{bottom:90px}.product-ui dialog{margin:auto 0 0;width:100%;max-width:100%;max-height:90dvh;border-radius:22px 22px 0 0;padding:22px 18px}.product-ui .mobile-next{bottom:80px}.product-ui .form-grid{grid-template-columns:1fr}.product-ui .product-daily .panel-head{flex-wrap:wrap}.product-ui .product-word-tabs .button{flex:1;font-size:12px}.product-ui .pilot-question{font-size:22px}.product-ui .row{gap:12px;overflow-wrap:anywhere}}
@media(prefers-reduced-motion:reduce){.product-ui *{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.product-ui.onboarding #product-bottom{display:none!important}.product-ui .product-profile{grid-column:1/-1}.product-ui #profile-form>.product-section{grid-column:1/-1}.product-ui .product-profile+label{margin-top:0}@media(max-width:700px){.product-ui .mobile-next-dock{bottom:76px;z-index:8999}.product-ui #screen.has-mobile-next{padding-bottom:175px}}
.online-product button:not(.secondary):not(.link){background:#0866d9;color:#fff}.online-product .eyebrow,.online-product button.link{color:#0754b2}.online-product .brand{color:var(--ink)}.online-product header img{display:none}.online-product .brand:before{content:'P';display:grid;place-items:center;width:42px;height:42px;background:#0866d9;color:#fff;border-radius:12px;font-size:29px;line-height:1}.online-product footer{color:var(--muted)}
.product-ui .a1-plan-topic{padding:18px}.product-ui .a1-plan-topic h3{font-size:16px}.product-ui .a1-plan-topic p{font-size:14px;line-height:1.65}.product-ui .a1-module>summary{font-size:16px;min-height:64px}.product-ui .a1-module-count{font-size:13px}.product-ui .a1-curriculum-note{font-size:15px}.product-ui .product-grammar-practice>summary{padding:18px 22px;border:1px solid var(--line);border-radius:14px;background:var(--paper);font-weight:600;cursor:pointer}.product-ui .a1-plan-topic>.button{margin-top:12px}