:root{--blue:#1672f6;--blue-dark:#0e5fcf;--ink:#10213d;--muted:#68788f;--line:#e1e8f2;--panel:#fff;--bg:#f5f8fc;--danger:#e54867;--shadow:0 10px 30px rgba(25,57,101,.08)}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;overflow-x:hidden}body{margin:0;overflow-x:hidden;background:var(--bg);color:var(--ink);font:14px/1.5 Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans",Arial,sans-serif;-webkit-tap-highlight-color:transparent}a{color:inherit}button,input,select,textarea{font:inherit}.hidden,.mobile-only{display:none!important}.app-shell{min-height:100dvh;display:grid;grid-template-columns:216px minmax(0,1fr);grid-template-rows:68px 1fr;grid-template-areas:"top top" "side main"}.topbar{grid-area:top;position:sticky;top:0;z-index:40;min-width:0;height:68px;padding:0 22px;display:grid;grid-template-columns:auto minmax(280px,620px) auto;align-items:center;gap:20px;border-bottom:1px solid #e4eaf2;background:#fff;box-shadow:0 3px 14px rgba(29,58,100,.055)}.brand{min-width:0;display:flex;align-items:center;gap:10px;color:#10213d;text-decoration:none}.brand img{width:46px;height:46px}.brand span{min-width:0}.brand strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:17px}.brand small{display:block;color:#7a879a;font-size:10.5px}.top-search{position:relative;min-width:0}.top-search input{width:100%;height:44px;padding:0 48px 0 15px;border:1px solid #d7e1ee;border-radius:14px;background:#f9fbfe;color:#10213d;outline:0}.top-search input:focus{border-color:#83b5fb;box-shadow:0 0 0 3px rgba(22,114,246,.09);background:#fff}.top-search button{position:absolute;right:5px;top:5px;width:34px;height:34px;padding:0;border:0;border-radius:10px;display:grid;place-items:center;background:#1672f6;color:#fff}.top-search button svg{width:18px;height:18px}.top-actions{justify-self:end;display:flex;align-items:center;gap:8px}.round{width:38px;height:38px;padding:0;border:1px solid #dce5f1;border-radius:12px;background:#fff;color:#30557e;display:grid;place-items:center}.round.primary{background:#eef5ff;border-color:#d5e5fb}.profile-btn{min-width:0;height:44px;padding:4px 10px 4px 5px;border:0;border-radius:14px;background:#f5f8fc;color:#13233e;display:flex;align-items:center;gap:8px;text-align:left}.profile-btn .avatar,.avatar{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:#e4efff}.profile-btn small{display:block;color:#7a8799;font-size:9px}.profile-btn strong{display:block;font-size:12px}.sidebar{grid-area:side;position:sticky;top:68px;height:calc(100dvh - 68px);overflow:auto;padding:14px 10px;border-right:1px solid #e3e9f1;background:#fff}.nav-list{display:grid;gap:4px}.nav-item{min-height:44px;padding:9px 10px;border-radius:12px;display:flex;align-items:center;gap:10px;color:#34445f;text-decoration:none;font-weight:750}.nav-item:hover{background:#f0f5fc;color:#145fc9}.nav-item span{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:#f2f6fb;color:#58718f}.nav-item span svg{width:18px;height:18px}.nav-home-dot:before{content:"⌂"}.sidebar-mobile-head{display:none}.main-content{grid-area:main;min-width:0;padding:18px max(14px,calc((100vw - 1320px)/2)) 42px}.cms-announcement{grid-column:1/-1;padding:8px 14px;background:#fff3c9;color:#6c4e00;text-align:center;font-size:12px}.modal{position:fixed;inset:0;z-index:90;display:none;padding:20px;overflow:auto}.modal.open{display:block}.modal-backdrop{position:fixed;inset:0;background:rgba(6,17,33,.48)}.modal-dialog{position:relative;width:min(1020px,calc(100vw - 40px));max-height:calc(100dvh - 40px);margin:0 auto;overflow:auto;border:1px solid #dde5ef;border-radius:20px;background:#f8fafc;box-shadow:0 22px 70px rgba(5,22,48,.24)}.modal-header{position:sticky;top:0;z-index:3;padding:14px 17px;border-bottom:1px solid #e3e9f1;background:#fff;display:flex;align-items:center;justify-content:space-between}.modal-header h2{margin:1px 0 0;font-size:18px}.modal-kicker{color:#1672f6;font-size:9px;font-weight:900;letter-spacing:.1em}.modal-close{width:34px;height:34px;border:0;border-radius:10px;background:#eef3f9;color:#34455e;font-size:22px}.modal-body{padding:16px}.compact .modal-dialog{width:min(460px,calc(100vw - 28px))}.profile-summary{display:flex;align-items:center;gap:12px;padding:8px 0 17px}.avatar.large{width:56px;height:56px;font-size:28px}.profile-summary strong,.profile-summary span{display:block}.profile-summary span{color:#76859a;font-size:12px}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:5px;padding:4px;border-radius:12px;background:#edf2f8}.auth-tabs button{min-height:38px;border:0;border-radius:9px;background:transparent;color:#66768c;font-weight:800}.auth-tabs button.active{background:#fff;color:#1566d2;box-shadow:0 3px 10px rgba(25,57,101,.08)}.auth-form{display:grid;gap:11px;margin-top:14px}.auth-form label{display:grid;gap:5px;color:#34455d;font-size:12px;font-weight:750}.auth-form input{height:42px;padding:0 12px;border:1px solid #dce4ee;border-radius:11px;outline:0}.wide-primary{min-height:42px;border:0;border-radius:11px;background:#1672f6;color:#fff;font-weight:850}.toast-stack{position:fixed;right:14px;bottom:14px;z-index:120;display:grid;gap:8px}.toast{max-width:min(350px,calc(100vw - 28px));padding:10px 12px;border:1px solid #dce5f0;border-radius:12px;background:#fff;box-shadow:0 12px 35px rgba(15,40,76,.18);display:flex;align-items:flex-start;gap:8px;opacity:0;transform:translateY(8px);transition:.18s}.toast.show{opacity:1;transform:none}.toast p{margin:0;font-size:12px}.toast.error{border-color:#ffd1d9;color:#a62d43}.floating-tools{display:none}.direct-tool-page{width:100%;min-width:0}.direct-tool-header{min-height:68px;margin-bottom:11px;padding:11px 14px;border:1px solid #e0e7f1;border-radius:17px;background:#fff;display:grid;grid-template-columns:32px 42px minmax(0,1fr);align-items:center;gap:10px;box-shadow:0 5px 20px rgba(32,63,105,.04)}.direct-tool-back{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;background:#f1f5fa;color:#35577e;text-decoration:none;font-size:17px;font-weight:900}.direct-tool-icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:#eaf4ff;color:#1769cf}.direct-tool-icon svg{width:24px;height:24px}.direct-tool-copy{min-width:0}.direct-tool-copy>span{display:block;color:#1e70e9;font-size:8.5px;font-weight:950;letter-spacing:.12em}.direct-tool-copy h1{margin:1px 0 0;color:#142544;font-size:20px;line-height:1.2}.direct-tool-copy p{margin:2px 0 0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#6c7a90;font-size:11px}.direct-tool-loading{min-height:200px;display:flex;align-items:center;justify-content:center;gap:10px;color:#61728b}.direct-tool-loading span{width:18px;height:18px;border:2px solid #d8e5f5;border-top-color:#1e70e9;border-radius:50%;animation:directSpin .7s linear infinite}@keyframes directSpin{to{transform:rotate(360deg)}}body:not([data-initial-view="home"]).modal-open{overflow:auto!important;padding-right:0!important}body:not([data-initial-view="home"]) #featureModal{position:static!important;inset:auto!important;z-index:auto!important;display:block!important;width:100%!important;height:auto!important;padding:0!important;background:transparent!important;overflow:visible!important}body:not([data-initial-view="home"]) #featureModal .modal-backdrop{display:none!important}body:not([data-initial-view="home"]) #featureModal .modal-dialog,body:not([data-initial-view="home"]) #featureModal .grammar-studio-dialog,body:not([data-initial-view="home"]) #featureModal .exercise-studio-dialog{position:static!important;inset:auto!important;width:100%!important;max-width:none!important;height:auto!important;min-height:0!important;max-height:none!important;margin:0!important;border:0!important;border-radius:0!important;background:transparent!important;box-shadow:none!important;overflow:visible!important;transform:none!important}body:not([data-initial-view="home"]) #featureModal .modal-header{display:none!important}body:not([data-initial-view="home"]) #featureModal .modal-body{width:100%!important;max-height:none!important;padding:0!important;background:transparent!important;overflow:visible!important}body:not([data-initial-view="home"]) .number-converter-v2515{width:min(880px,100%);margin:0 auto}body:not([data-initial-view="home"]) .grammar-studio,body:not([data-initial-view="home"]) .exercise-studio-root,body:not([data-initial-view="home"]) .community-studio-root{min-height:0!important}
@media(max-width:900px){.mobile-only{display:grid!important}.app-shell{display:block;min-height:100dvh}.topbar{height:58px;padding:0 9px;grid-template-columns:40px minmax(0,1fr) auto;gap:7px}.mobile-menu-toggle{width:38px;height:38px;border:0;border-radius:11px;background:#edf3fb;color:#315b88;font-size:20px}.brand img{width:38px;height:38px}.brand strong{font-size:14px}.brand small{display:none}.site-premium-search{display:none}.top-actions{gap:5px}.round.primary{display:none}.profile-btn{width:40px;height:40px;padding:3px}.profile-btn span:not(.avatar){display:none}.profile-btn .avatar{width:34px;height:34px}.sidebar{position:fixed;z-index:70;left:0;top:0;width:min(300px,86vw);height:100dvh;padding:14px;transform:translateX(-105%);transition:transform .2s ease;box-shadow:0 20px 60px rgba(10,31,62,.22)}body.nav-open .sidebar{transform:none}.sidebar-mobile-head{display:flex!important;align-items:center;justify-content:space-between;margin-bottom:12px}.sidebar-mobile-brand{display:flex;align-items:center;gap:8px}.sidebar-mobile-brand .brand-mark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:#e9f3ff}.sidebar-mobile-brand strong,.sidebar-mobile-brand small{display:block}.sidebar-mobile-brand small{color:#7a879a;font-size:10px}.sidebar-mobile-head button{width:36px;height:36px;border:0;border-radius:10px;background:#eff3f8;font-size:22px}.sidebar-overlay{position:fixed;z-index:65;inset:0;border:0;background:rgba(9,23,43,.42);opacity:0;pointer-events:none;transition:opacity .2s}body.nav-open .sidebar-overlay{opacity:1;pointer-events:auto}.main-content{padding:9px 7px 24px}.direct-tool-header{min-height:56px;margin-bottom:7px;padding:7px 8px;border-radius:13px;grid-template-columns:30px 36px minmax(0,1fr);gap:7px}.direct-tool-back{width:30px;height:30px}.direct-tool-icon{width:36px;height:36px}.direct-tool-icon svg{width:21px;height:21px}.direct-tool-copy>span{display:none}.direct-tool-copy h1{font-size:16px}.direct-tool-copy p{font-size:10px}.modal{padding:8px}.modal-dialog{width:100%;max-height:calc(100dvh - 16px);border-radius:15px}.modal-body{padding:10px}.direct-tool-loading{min-height:140px}body:not([data-initial-view="home"]) #featureModal .modal-body{padding-bottom:max(10px,env(safe-area-inset-bottom))!important}.toast-stack{right:8px;bottom:8px}}
@media(max-width:420px){.direct-tool-copy p{display:none}.direct-tool-header{grid-template-columns:29px 34px minmax(0,1fr)}.direct-tool-copy h1{font-size:15px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}
/* V5.3.0 focused workspaces */
body[data-initial-view="grammar"] .direct-tool-header,body[data-initial-view="exercises"] .direct-tool-header{display:none}
body[data-initial-view="grammar"] .main-content,body[data-initial-view="exercises"] .main-content{padding-top:12px}
body[data-initial-view="grammar"] #featureModal,body[data-initial-view="exercises"] #featureModal{content-visibility:auto;contain-intrinsic-size:900px}
.exs-type-badge svg{width:17px;height:17px;vertical-align:middle;margin-right:4px}
@media(max-width:900px){body[data-initial-view="grammar"] .main-content,body[data-initial-view="exercises"] .main-content{padding-top:7px}}