body:has(#explore:not(.hidden) #history:not(.hidden)){height:100dvh;overflow:hidden}body:has(#explore:not(.hidden) #history:not(.hidden)) .workspace{height:100%;display:flex;flex-direction:column}body:has(#explore:not(.hidden) #history:not(.hidden)) .workspace>header{height:46px;min-height:46px}body:has(#explore:not(.hidden) #history:not(.hidden)) main{flex:1;min-height:0;overflow:hidden;padding:16px 24px 20px;display:flex;flex-direction:column}body:has(#explore:not(.hidden) #history:not(.hidden)) .intro,body:has(#explore:not(.hidden) #history:not(.hidden)) footer{display:none}#explore:has(#history:not(.hidden)){flex:1;min-height:0;display:flex;flex-direction:column}.explore-tabs:has(~#history:not(.hidden)){margin-bottom:12px;flex:none}#history:not(.hidden){display:flex;flex-direction:column;min-height:0;flex:1}.history-heading{display:flex;align-items:center;justify-content:space-between;gap:10px}.history-heading h2{font-size:23px;margin:0}.history-heading p{font-size:12px;color:#708176;margin:5px 0 10px}.history-heading button{font-size:12px;white-space:nowrap}.history-filters{display:flex;align-items:center;gap:12px;padding:8px 0 14px;flex:none}.history-filters [role=group]{display:flex;gap:5px}.history-filters button,.history-filters select,.history-filters input{border:1px solid #ccd9ca;border-radius:7px;background:#fff;padding:7px 11px;min-height:37px;font:inherit;font-size:12px;color:#285347}.history-filters button[aria-pressed=true]{background:#166b60;color:white}.history-filters input{width:210px}.history-filters small{margin-left:auto;color:#708176;font-size:11px}.history-workspace{display:grid;grid-template-columns:270px minmax(0,1fr);gap:18px;flex:1;min-height:0}#historyList{overflow:auto;min-height:0;padding:4px;background:#edf2e8;border-radius:12px}#historyList button{display:block;text-align:left;width:100%;border:1px solid transparent;padding:12px;margin:0 0 5px;border-radius:8px;color:#2a4b40}#historyList button small{display:block;font-size:10px;color:#738777;margin-bottom:4px}#historyList button b{font-size:13px;font-weight:550}#historyList button[aria-current=true]{background:#fff;border-color:#aac8b1;box-shadow:0 3px 10px #284e3910}#historyList button[aria-current=true] b{color:#146756}#historyDetail{min-height:0;overflow:auto;border:1px solid #d9e2d5;background:white;border-radius:14px;padding:22px 26px;line-height:1.8}.history-meta{font-size:11px;color:#64816c;display:flex;justify-content:space-between}#historyDetail h2{font-size:23px;margin:8px 0 14px;line-height:1.4}.history-question{padding:12px 16px;border-left:3px solid #368773;background:#eff5ea;border-radius:0 8px 8px 0;font-size:13px}.history-question b{font-size:11px;color:#467b62}.history-question p{margin:3px 0}.history-content{display:grid;grid-template-columns:1fr 1fr;gap:4px 24px}.history-content h3{font-size:13px;color:#236c55;margin:16px 0 5px}.history-content p{font-size:13px;margin:0;line-height:1.85}.history-caution h3{color:#ab693e}.history-source{margin-top:16px;border-top:1px solid #e4eadd;padding-top:10px;font-size:11px}.history-source small{display:block;color:#7b8a7a;font-size:10px;margin-top:5px}.history-pager{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:14px;font-size:11px}.history-pager button{padding:7px 12px;border:1px solid #c9d9c6;border-radius:7px;min-height:36px}.history-pager button:disabled{opacity:.4;cursor:default}@media(max-width:1000px){.history-workspace{grid-template-columns:210px minmax(0,1fr)}.history-content{grid-template-columns:1fr}#historyDetail{padding:16px 20px}.history-heading h2{font-size:19px}}@media(max-width:620px){body:has(#explore:not(.hidden) #history:not(.hidden)) main{padding:10px 8px}.history-workspace{grid-template-columns:105px minmax(0,1fr);gap:7px}.history-filters{flex-wrap:wrap;gap:6px}.history-filters input{width:145px;min-width:0}.history-filters small{margin:0}.history-heading h2{font-size:16px}.history-heading button{font-size:9px;padding:6px}.history-heading p{font-size:10px}#historyList button{padding:8px 5px}#historyList button b{font-size:11px}#historyList button small{font-size:9px}#historyDetail{padding:12px}#historyDetail h2{font-size:17px}.history-content p,.history-question{font-size:12px}.history-meta{flex-direction:column}.history-pager button{padding:5px;font-size:10px}}

.history-beginner{margin:15px 0;padding:0 0 12px;border-bottom:1px solid #e4eadd;display:grid;grid-template-columns:1fr 1fr;gap:12px 22px}.history-beginner h3{font-size:13px;color:#245d4d;margin:0 0 5px}.history-beginner p{font-size:13px;line-height:1.95;margin:0}.history-analogy{grid-column:1/-1;background:#f5f4eb;border-radius:8px;padding:12px 15px}.history-analogy h3{color:#8c6a3e}@media(max-width:1000px){.history-beginner{grid-template-columns:1fr}}

.history-reading-tabs{display:flex;gap:8px;margin:14px 0}.history-reading-tabs button{border:1px solid #c9d8c7;border-radius:7px;padding:7px 12px;font-size:12px;min-height:36px}.history-reading-tabs button[aria-selected=true]{background:#166b60;color:white}#historyDetail [hidden]{display:none!important}