/* Original Learnmore: floating rail, paper mountains, centered search, staggered cards. */
:root{--bg:#fbfdff;--paper:#fff;--ink:#202b3c;--muted:#556a81;--line:#e4eef8;--blue:#2c78ca;--soft:#ecf6ff;--shadow:0 20px 48px #395e8220}html,body{overflow-x:clip}
body{background:var(--bg)}.app.original-look{display:block;min-height:100vh}.ico{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #8ebeed;outline-offset:3px}
.topbar{height:84px;padding:0 42px 0 112px;display:flex;align-items:center;justify-content:space-between;gap:15px;position:relative;z-index:5}.top-tabs{display:flex;align-items:center;gap:4px;padding:4px;border-radius:14px;background:#edf3f8;color:var(--muted);min-height:44px}.top-tabs button{border-radius:10px;padding:8px 18px;color:var(--muted);white-space:nowrap}.top-tabs button.active{background:white;box-shadow:0 2px 7px #24384612;color:var(--ink)}.top-tabs>span{font-size:13px;padding:0 12px}.topright{display:flex;align-items:center;gap:16px}.topright .save{font-size:12px;color:var(--muted)}.theme-toggle{width:38px;height:38px;border:1px solid var(--line);border-radius:12px;background:var(--paper);font-size:20px;display:grid;place-items:center;color:var(--ink)}
.rail{position:fixed;inset:16px auto 16px 16px;width:64px;display:flex;flex-direction:column;align-items:center;padding:12px 8px;border:1px solid #ffffffc9;border-radius:23px;background:#ffffffb8;backdrop-filter:blur(24px);box-shadow:0 8px 36px #38566b0b;z-index:35}.rail-brand{width:44px;height:44px;padding:0;display:grid;place-items:center;border-radius:14px;overflow:hidden;background:white}.rail-brand img{width:100%;height:100%;object-fit:contain}.rail-items{display:grid;gap:11px;margin:auto 0;width:100%}.rail-item{position:relative;width:46px;height:46px;border-radius:15px;display:grid;place-items:center;color:#617083;transition:background .18s,color .18s,transform .18s}.rail-item:hover{background:#edf4fb;transform:translateY(-2px)}.rail-item.active{background:#e6f1ff;color:#2367b7}.rail-label{position:absolute;left:56px;top:50%;transform:translateY(-50%);display:none;white-space:nowrap;padding:7px 11px;border-radius:9px;background:white;color:var(--ink);box-shadow:var(--shadow);font-size:12px}.rail-item:hover .rail-label,.rail-item:focus-visible .rail-label{display:block}.rail-profile{width:42px;height:42px;padding:0;margin:16px 0 2px;border-radius:50%;background:white;box-shadow:0 0 0 3px #ffffffb8;font-weight:650;color:var(--blue)}
.paper-backdrop{position:fixed;inset:84px 0 0;z-index:0;pointer-events:none;opacity:.35;background:radial-gradient(ellipse at 90% 85%,#e9f7ff,transparent 65%)}.main{position:relative;z-index:1;margin:0 auto 0 94px;padding:0 42px 90px;max-width:none;width:auto;min-height:calc(100vh - 84px)}.main>.footnote{text-align:center;margin:42px 0 0;font-size:11px;color:#9badbc}.page-signature{position:fixed;right:27px;bottom:17px;color:#7890a3;font-size:10px;letter-spacing:.22em;pointer-events:none;z-index:2}.page-signature span{color:#a4bd96}
.home{position:relative;isolation:isolate;max-width:1440px;margin:auto}.paper-landscape{position:absolute;top:0;left:50%;transform:translateX(-50%);width:calc(100vw - 94px);height:850px;z-index:-1;pointer-events:none;object-fit:cover}.homebody{width:100%;max-width:1200px;padding:clamp(38px,7vh,78px) 0 0;margin:0 auto;position:relative}.hero-date{text-align:center;color:var(--muted);font-size:12px;letter-spacing:.14em;margin:0 0 21px}.home h1{font-size:clamp(48px,5.5vw,76px);font-weight:650;line-height:1.1;letter-spacing:-.045em;text-align:center;color:var(--ink)}.home h1 .home-question{display:block;font-size:clamp(29px,3.6vw,52px);font-weight:580;letter-spacing:-.035em;margin-top:12px}.home h1 em{font-style:normal;color:var(--blue)}
.home-search-area{position:relative;width:min(560px,100%);margin:30px auto 0;z-index:12}.home-search{display:flex;align-items:center;gap:13px;min-height:60px;padding:10px 13px 10px 20px;border-radius:17px;background:#fff;box-shadow:0 6px 12px #395e8208,0 20px 42px #395e8214;color:var(--muted)}.home-search input{border:0;outline:none;min-width:0;flex:1;padding:0;font-size:14px;background:transparent}.home-search:focus-within{box-shadow:0 0 0 2px #9dc4e8,0 20px 42px #395e8214}.home-search kbd{font-size:11px;padding:3px 6px;border:1px solid var(--line);border-radius:6px;white-space:nowrap}.search-results{position:absolute;top:calc(100% + 9px);left:0;right:0;max-height:300px;overflow:auto;background:var(--paper);border-radius:15px;padding:7px;box-shadow:var(--shadow)}.search-results[hidden]{display:none}.search-results button{display:flex;justify-content:space-between;width:100%;padding:10px;border-radius:9px;text-align:left}.search-results button:hover{background:var(--soft)}.search-results small,.search-results p{color:var(--muted)}.search-results p{padding:12px}
.home-actions{display:flex;justify-content:center;align-items:center;gap:12px;margin-top:20px}.home-actions button{min-height:43px;padding:10px 17px;border-radius:12px;box-shadow:0 4px 10px #395e820b;font-size:13px}.home-actions .primary{background:var(--ink)}.home-actions .primary:hover{background:var(--blue)}.home-actions .secondary{background:white;color:var(--ink);border:1px solid var(--line)}.home-memo-link{margin:15px auto 0;display:flex;align-items:center;gap:7px;color:var(--muted);font-size:12px;padding:4px 8px;border-radius:8px}.home-memo-link:hover{background:var(--soft);color:var(--blue)}.home-memo-link .ico{width:15px;height:15px}
.study-scene{position:relative;isolation:isolate;margin:50px auto 0;max-width:1060px;padding:0 24px 65px}.study-scene:before{content:"";position:absolute;z-index:-1;inset:-80px -90px -30px;background:radial-gradient(ellipse at 36% 58%,#e8f5ff,transparent 64%),radial-gradient(ellipse at 74% 63%,#effbf7,transparent 60%);filter:blur(12px)}.study-cards{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px;align-items:start}.study-card{--card-y:0px;--card-r:0deg;position:relative;display:flex;flex-direction:column;align-items:flex-start;min-width:0;min-height:174px;padding:20px;border-radius:22px;text-align:left;background:#ffffffd9;color:var(--ink);box-shadow:var(--shadow);backdrop-filter:blur(18px);transform:translateY(var(--card-y)) rotate(var(--card-r));transition:transform .25s ease,box-shadow .25s ease}.study-card:nth-child(1){--card-y:34px;--card-r:-5deg}.study-card:nth-child(2){--card-y:12px;--card-r:-2deg}.study-card:nth-child(3){min-height:194px}.study-card:nth-child(4){--card-y:12px;--card-r:2deg}.study-card:nth-child(5){--card-y:34px;--card-r:5deg}.study-card:hover,.study-card:focus-visible{transform:translateY(calc(var(--card-y) - 8px)) rotate(0deg);z-index:2}.study-card strong{font-size:15px;font-weight:600}.study-card small{color:var(--muted);font-size:11px;margin-top:5px;white-space:nowrap}.card-arrow{position:absolute;right:19px;top:20px;color:var(--muted);font-size:16px}.card-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;background:#ecf6ff;color:var(--blue);margin-bottom:16px}.study-card:nth-child(2) .card-icon{background:#e9f9f2;color:#35765e}.study-card:nth-child(4) .card-icon{background:#f2effe;color:#776297}.study-card:nth-child(5) .card-icon{background:#fff5e7;color:#96692e}.card-preview{display:flex;gap:5px;align-items:flex-end;margin-top:16px;width:100%;height:13px;opacity:.65}.card-preview i{height:4px;border-radius:3px;background:#d4e7f6;width:26%}.card-preview i:nth-child(2){width:38%}.card-preview i:nth-child(3){width:17%}
.home-overview{max-width:1120px;margin:70px auto 0;display:grid;gap:22px}.home-overview .stats{margin:0}.home-overview .panel,.interior-page .panel{background:#ffffffd9;border:1px solid var(--line);box-shadow:0 10px 35px #395e8210;backdrop-filter:blur(15px)}.home-overview .result-focus{border-top:3px solid #dab46c}.interior-page{max-width:1260px;margin:0 auto}.pagehead{padding-top:20px}.pagehead h1{font-weight:620;letter-spacing:-.03em}.panel,.card,.stat,.empty{border-radius:20px}.primary{background:var(--blue)}.secondary{background:#eaf4ff}.badge{background:#eaf4ff}.tabs{border-bottom:1px solid var(--line)}.tabs button.active{border-color:var(--blue)}
.memolaunch{position:fixed;bottom:24px;right:28px;z-index:42;display:flex;align-items:center;gap:9px;padding:13px 16px;border-radius:17px;background:var(--paper);color:var(--ink);box-shadow:var(--shadow)}.memolaunch:hover{background:var(--soft)}.memolaunch .ico{width:18px;height:18px}.memowindow{position:fixed;right:25px;bottom:85px;z-index:42;width:365px;max-width:calc(100vw - 30px);padding:18px;border:1px solid var(--line);border-radius:20px;background:var(--paper);box-shadow:var(--shadow)}.memowindow header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.memowindow header button{font-size:22px}.memowindow input{margin-bottom:10px}.memowindow textarea{min-height:150px}.note-actions{display:flex;justify-content:space-between;margin-top:12px}.note-actions button{padding:8px 10px;border-radius:9px}
body.night{--bg:#252a26;--paper:#364139;--ink:#f3f1e8;--muted:#bfcbbc;--line:#526457;--blue:#b0d8c8;--soft:#3e544d;--shadow:0 20px 50px #050a0750;background:var(--bg)}body.night .rail{background:#303b33bd;border-color:#ffffff12}body.night .rail-item{color:#c3cfbf}body.night .rail-item.active,body.night .rail-item:hover{background:#4a5c50;color:#fff}body.night .rail-label,body.night .rail-brand,body.night .rail-profile,body.night .theme-toggle,body.night .top-tabs button.active{background:var(--paper);color:var(--ink)}body.night .top-tabs{background:#3e544d}body.night .home-search,body.night .study-card,body.night .home-overview .panel,body.night .interior-page .panel,body.night .panel,body.night .stat,body.night .card,body.night .empty{background:#364139ec;color:var(--ink)}body.night .home-search input{color:var(--ink)}body.night .home-actions .primary{background:#f3f1e8;color:#24352e}body.night .home-actions .secondary{background:var(--paper);color:var(--ink)}body.night .paper-landscape{opacity:.12}body.night .paper-backdrop{opacity:.06}body.night .study-scene:before{opacity:.15}body.night input,body.night select,body.night textarea,body.night dialog{background:var(--paper);color:var(--ink)}
@media(max-width:1100px){.study-scene{padding-inline:12px}.study-cards{gap:12px}.study-card{padding:17px 14px}.study-card small{font-size:10px}.home h1{font-size:58px}.home h1 .home-question{font-size:38px}}
@media(max-width:850px){.main{margin-left:78px;padding:0 23px 80px}.topbar{padding-left:88px}.homebody{padding-top:44px}.home h1{font-size:48px}.home h1 .home-question{font-size:32px}.study-cards{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.study-card:nth-child(n){--card-y:0px;--card-r:0deg;min-height:170px}.study-scene{margin-top:36px;padding-bottom:28px}.paper-landscape{width:calc(100vw - 78px)}}
@media(max-width:540px){.topbar{padding:8px 10px 8px 76px;height:74px}.top-tabs button{padding:8px 10px;font-size:12px}.topright .save{display:none}.theme-toggle{width:33px;height:33px}.rail{left:8px;width:58px}.rail-item{width:42px;height:42px}.main{margin-left:66px;padding:0 12px 70px}.homebody{padding-top:35px}.home h1{font-size:37px}.home h1 .home-question{font-size:25px}.home-search kbd{display:none}.study-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.study-scene{padding-inline:0}.study-card{min-height:145px!important}.paper-landscape{width:calc(100vw - 66px)}.home-overview{margin-top:45px}.memolaunch span{display:none}.precheck{grid-template-columns:1fr}.grid2{grid-template-columns:1fr}}
.topbar{justify-content:flex-end}.top-tabs{position:absolute;left:50%;transform:translateX(-50%)}.topright{margin-left:auto}.study-card strong{font-weight:500}.home-overview h2{font-weight:500}.home-overview .item strong{font-weight:400}.home-overview .stat strong{font-weight:500}
@media(max-width:600px){.top-tabs{left:calc(50% + 22px)}.top-tabs button{padding:7px 10px}.topright .save{display:none}}