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infinite}.modal-backdrop{position:fixed;z-index:80;top:0;right:0;bottom:0;left:0;background:#161e198c;display:grid;place-items:center;padding:18px;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.auth-dialog{width:min(390px,100%);border-radius:8px;background:var(--paper);padding:28px;box-shadow:0 24px 70px #0000003d;display:flex;flex-direction:column;position:relative}.dialog-close{position:absolute;right:13px;top:13px;border:0;background:transparent;color:var(--muted)}.auth-mark{width:44px;height:44px;display:grid;place-items:center;border-radius:7px;color:var(--green);background:#eaf6f0}.auth-dialog h2{font-size:21px;margin:17px 0 5px}.auth-dialog p{color:var(--muted);font-size:10px;margin:0 0 20px}.auth-dialog label{display:flex;flex-direction:column;gap:6px;color:var(--muted);font-size:9px;font-weight:600;margin-bottom:12px}.auth-dialog input{width:100%;border:1px solid var(--line);border-radius:6px;outline:none;padding:11px 12px;background:#fafbf9;font-size:11px}.auth-dialog input:focus{border-color:var(--green);background:#fff}.auth-error{color:var(--accent);background:var(--accent-soft);border-radius:5px;padding:8px;font-size:9px;margin-bottom:10px}.auth-submit{border:0;border-radius:6px;background:var(--nav);color:#fff;padding:11px;font-size:11px;font-weight:700}.auth-switch{border:0;background:transparent;color:var(--green);font-size:9px;font-weight:700;margin-top:12px}@keyframes spin{to{transform:rotate(360deg)}}@keyframes shake{25%{transform:translate(-3px)}75%{transform:translate(3px)}}@media(max-width:920px){.sidebar{transform:translate(-100%);transition:transform .2s;box-shadow:12px 0 35px #0000002e}.sidebar.open{transform:translate(0)}.main-frame{margin-left:0;width:100%}.mobile-only{display:grid;margin-right:12px}.topbar{padding:0 20px}.page{padding:30px 20px}.metric-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:680px){.topbar{height:64px}.topbar-stats span:first-child,.cloud-button span{display:none}main{min-height:calc(100vh - 64px)}.dashboard-head{align-items:flex-start;padding-top:0}.dashboard-head h1{font-size:34px}.today-ring{width:84px;height:84px;margin-left:12px}.today-ring:after{top:7px;right:7px;bottom:7px;left:7px}.today-ring strong{font-size:22px}.action-strip,.lower-grid,.stats-grid{grid-template-columns:1fr}.metric-grid{grid-template-columns:1fr 1fr}.week-panel{order:2}.study-page,.spelling-page,.sentence-page{padding:14px 12px 24px;min-height:calc(100vh - 64px)}.study-toolbar{grid-template-columns:100px 1fr 36px;gap:10px;margin-bottom:12px}.study-card{min-height:460px}.word-main h1{font-size:clamp(38px,14vw,62px);overflow-wrap:anywhere;text-align:center}.recall-gate{flex-direction:column;gap:12px}.answer-area{grid-template-columns:1fr;gap:16px}.spelling-card{min-height:390px;padding:28px 18px}.sentence-toolbar{grid-template-columns:80px 1fr auto;gap:9px;margin-bottom:12px}.sentence-prompt,.sentence-context,.sentence-answer,.sentence-builder{padding-left:18px;padding-right:18px}.sentence-context p{font-size:15px}.sentence-tools{flex-wrap:wrap}.sentence-tools span{width:100%;margin-left:0}.sentence-success{align-items:flex-start;flex-direction:column;padding:16px 18px}.grade-row{gap:5px}.grade-row button{flex-direction:column;gap:4px;min-height:66px}.grade-row span{align-items:center}.grade-row small{display:none}.library-head,.stats-head{align-items:flex-start}.library-head h1,.stats-head h1,.library-count strong,.big-progress strong{font-size:32px}.word-controls{flex-direction:column}.segmented{height:40px}.segmented button{flex:1}.word-row{grid-template-columns:28px 105px 1fr 30px}.word-row p{line-height:1.55}.strength{display:none}.insight-strip{grid-template-columns:1fr 1fr}.insight-strip>div:nth-child(2){border-right:0}.insight-strip>div:nth-child(-n+2){border-bottom:1px solid var(--line)}.setting-row{grid-template-columns:38px 1fr auto}.range-row input{width:90px}}