.large-entry-art{display:grid;justify-items:center;gap:7px;margin:20px 0;padding:22px 12px;border:1px solid #cddfe9;border-radius:20px;background:radial-gradient(ellipse at top left,#b8eff055,transparent 70%),linear-gradient(140deg,#f4fbff,#f1edff);color:#19354e;box-shadow:inset 0 1px 0 #fff}.large-entry-art>span{font-size:clamp(19px,2vw,27px);font-weight:800}.large-entry-art b{color:#4b64be}.large-entry-art i{font-style:normal;color:#248da6;font-size:25px}.large-entry-art small{letter-spacing:.12em;font-size:9px;color:#557888}.math-theme-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.large-topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:26px 0}.large-topic-grid h2{font-size:25px}.large-topic-grid .learning-stage{float:right}.large-topic-grid button{margin:8px 6px 0 0}.large-topic-grid p{font-size:14px}.large-equation{font-size:clamp(27px,6vw,47px);font-weight:800;color:#19354e;margin:24px 0;line-height:1.3}.large-area{display:flex;gap:6px;min-height:100px;margin:22px 0;flex-wrap:wrap}.large-area-part{min-width:100px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:12px;padding:16px;border-radius:12px;background:linear-gradient(140deg,#b2e9ea,#daf5f8);border:1px solid #91ced7;color:#193a52}.large-area-part.part-1{background:linear-gradient(140deg,#d5c4f7,#ede8fc);border-color:#bca8e3}.large-area-part span{font-size:25px;font-weight:800}.large-steps{padding-left:26px;line-height:2;font-size:18px;font-variant-numeric:tabular-nums}.large-board-rows>div{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;padding:18px 0;border-bottom:1px solid #dce5ec}.large-board-rows small{grid-column:1/-1;color:#667b8a}.large-strategies{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0}.large-strategies button{font-size:11px;padding:10px 12px}.large-strategies [aria-pressed=true]{background:#d9eafa;border-color:#466fa7;color:#19354e}.large-summary{margin-top:26px}.large-status-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:20px 0}.large-status-list a{display:flex;justify-content:space-between;gap:12px;font-size:12px;padding:10px;background:#f0f5f9;border-radius:10px}.large-status-list strong{white-space:nowrap;color:#487986}.large-story{font-size:22px;line-height:1.5}.subject-navigation{flex-wrap:wrap}
@media(max-width:1000px){.math-theme-grid{grid-template-columns:1fr}.large-entry-art{max-width:430px}}@media(max-width:650px){.large-topic-grid,.large-status-list{grid-template-columns:1fr}.large-board-rows>div{grid-template-columns:1fr;gap:7px}.large-board-rows small{grid-column:auto}.large-steps{font-size:16px}.large-topic-grid h2{font-size:23px}.large-topic-grid .panel{padding:22px}.large-equation{overflow-wrap:anywhere}.large-area-part{min-width:90px}}
.subject-navigation{grid-template-columns:auto repeat(3,minmax(0,1fr))}.subject-navigation a strong{font-size:16px}.subject-navigation a{min-width:0}
@media(max-width:760px){.subject-navigation{grid-template-columns:repeat(3,minmax(0,1fr))}.subject-navigation>span{grid-column:1/-1}.subject-navigation a{padding:13px 10px}.subject-navigation a strong{font-size:13px}.subject-navigation a small{font-size:11px}}
@media(max-width:450px){.subject-navigation{grid-template-columns:1fr}.subject-navigation a{min-height:60px}.subject-navigation a strong{font-size:16px}}
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