:root{--bg:#f5f3ed;--paper:#fffefa;--paper2:#f0eee6;--ink:#20282e;--muted:#67747c;--line:#ddd9cf;--navy:#17384c;--navy2:#315f78;--green:#2f6b58;--green2:#e9f2ee;--gold:#8c6727;--gold2:#f7f0df;--red:#9b4141;--red2:#f8eaea;--blue:#386f9f;--violet:#6b5d96;--shadow:0 8px 24px rgba(27,39,45,.07);--content:880px;--safe-bottom:env(safe-area-inset-bottom,0px)}*{box-sizing:border-box}html{background:var(--bg);scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic",Meiryo,sans-serif;line-height:1.72;padding-bottom:calc(78px + var(--safe-bottom))}button,a,input,select,textarea{font:inherit}button,a{touch-action:manipulation}.topbar{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:46px 1fr 46px;align-items:center;gap:10px;padding:10px max(12px,env(safe-area-inset-left)) 10px max(12px,env(safe-area-inset-right));background:rgba(245,243,237,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.iconBtn{display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--line);border-radius:13px;background:var(--paper);color:var(--navy);text-decoration:none;font-weight:900}.brand{min-width:0}.brandSmall{font-size:9px;letter-spacing:.13em;color:var(--muted);font-weight:800}.brandTitle{font-weight:900;color:var(--navy);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.brandTitle span{font-weight:600;color:var(--green)}.screen{max-width:940px;margin:0 auto;padding:18px 16px 34px}.bottomNav{position:fixed;left:0;right:0;bottom:0;z-index:30;display:grid;grid-template-columns:repeat(5,1fr);padding:7px 8px calc(7px + var(--safe-bottom));background:rgba(255,254,250,.97);border-top:1px solid var(--line);backdrop-filter:blur(12px)}.navBtn{border:0;background:transparent;color:var(--muted);min-height:54px;border-radius:12px;font-weight:800}.navBtn span{display:block;font-size:18px;line-height:1.1}.navBtn small{display:block;margin-top:4px;font-size:10px}.navBtn.active{background:#e9eef0;color:var(--navy)}.hero{padding:22px;border-radius:22px;background:linear-gradient(150deg,#fffefa,#eef2ef);border:1px solid var(--line);box-shadow:var(--shadow)}.eyebrow,.kicker{font-size:10px;letter-spacing:.13em;font-weight:900;color:var(--green)}.hero h1,.pageTitle h1{font-family:Georgia,"Yu Mincho",serif;color:var(--navy);line-height:1.3}.hero h1{font-size:32px;margin:5px 0 9px}.hero h1 span{color:var(--green)}.hero p,.pageTitle p{color:var(--muted);font-size:13px;line-height:1.8;margin:0}.statsRow{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:16px}.stat{padding:11px;background:rgba(255,255,255,.72);border:1px solid var(--line);border-radius:13px;text-align:center}.stat b{display:block;color:var(--navy);font-size:19px}.stat span{display:block;font-size:10px;color:var(--muted)}.sectionTitle{display:flex;justify-content:space-between;gap:12px;align-items:end;margin:22px 2px 9px}.sectionTitle h2{font-family:Georgia,"Yu Mincho",serif;color:var(--navy);font-size:18px;margin:0}.sectionTitle span{font-size:10px;color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.card{display:block;padding:15px;background:var(--paper);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}button.card{width:100%;text-align:left;color:var(--ink);cursor:pointer}.card h3{margin:5px 0;color:var(--navy);font-size:16px}.card p{margin:0;color:var(--muted);font-size:12px}.cardIcon{font-family:Georgia,serif;font-size:24px;color:var(--navy)}.tag{display:inline-flex;padding:3px 8px;border-radius:99px;background:var(--green2);border:1px solid #c8ddd3;color:var(--green);font-size:10px;font-weight:900;margin-top:8px}.tag.warn{background:var(--gold2);border-color:#e7d7b8;color:var(--gold)}.subjectHero{border-top:5px solid var(--navy)}.subjectHero.japanese{border-top-color:#8c5260}.subjectHero.english{border-top-color:var(--blue)}.subjectHero.history{border-top-color:var(--gold)}.route{display:grid;gap:8px}.routeItem{display:grid;grid-template-columns:42px 1fr;gap:11px;align-items:start;padding:13px;background:var(--paper);border:1px solid var(--line);border-radius:14px}.routeNo{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:#e8eef1;color:var(--navy);font-weight:900}.routeItem b{display:block;color:var(--navy)}.routeItem small{display:block;color:var(--muted);line-height:1.6;margin-top:3px}.moduleList{display:grid;gap:8px}.moduleBtn{display:flex;justify-content:space-between;gap:12px;align-items:center;width:100%;text-align:left;padding:14px;background:var(--paper);border:1px solid var(--line);border-radius:14px;color:var(--ink)}.moduleBtn b{color:var(--navy)}.moduleBtn small{display:block;color:var(--muted);font-size:10px;margin-top:2px}.meter{height:8px;background:#e7e5de;border-radius:99px;overflow:hidden;margin-top:8px}.meter i{display:block;height:100%;background:linear-gradient(90deg,var(--navy2),var(--green));border-radius:99px}.pill{white-space:nowrap;padding:4px 8px;border-radius:99px;background:#edf1f2;color:var(--navy);font-size:10px;font-weight:800}.pageTitle{margin:0 0 16px}.pageTitle h1{font-size:28px;margin:2px 0 6px}.toolbar{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}.btn{min-height:44px;border:1px solid #bfc7c9;background:var(--paper);color:var(--navy);border-radius:12px;padding:10px 13px;font-weight:800;cursor:pointer}.btn.primary{background:var(--navy);color:white;border-color:var(--navy)}.btn.good{background:var(--green);color:white;border-color:var(--green)}.btn.danger{background:var(--red2);color:var(--red);border-color:#debcbc}.btn.wide{width:100%}.backLink{border:0;background:transparent;color:var(--navy2);padding:7px 0;min-height:42px}.quizWrap{max-width:760px;margin:0 auto}.qCard{background:var(--paper);border:1px solid var(--line);border-top:4px solid var(--navy);border-radius:18px;padding:20px;box-shadow:var(--shadow)}.qMeta{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:10px}.qCard h2{font-family:Georgia,"Yu Mincho",serif;font-size:21px;line-height:1.65;margin:13px 0 16px}.choiceList{display:grid;gap:9px}.choice{min-height:50px;text-align:left;border:1px solid #cfd4d4;background:white;border-radius:12px;padding:12px 14px;color:var(--ink)}.choice.correct{background:#edf6f1;border-color:#7fac98}.choice.wrong{background:#fbefef;border-color:#cd9292}.explain{margin-top:14px;padding:14px;background:var(--paper2);border:1px solid var(--line);border-radius:13px;font-size:13px;line-height:1.8}.explain strong{color:var(--navy)}.whyGrid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:10px}.whyBox{padding:11px;border:1px solid var(--line);border-radius:12px;background:#fff}.whyBox b{display:block;font-size:10px;color:var(--green);letter-spacing:.03em}.whyBox span{font-size:11px;color:#3e4b53}.confidence{display:flex;gap:7px;margin-top:11px}.confidence button{flex:1;min-height:40px;border:1px solid #ccd1d1;background:white;border-radius:10px;color:var(--muted);font-size:10px}.confidence button.selected{border-color:var(--navy);background:#eaf0f3;color:var(--navy);font-weight:900}.inputAnswer{width:100%;min-height:48px;border:1px solid #cfd4d4;border-radius:12px;padding:11px;background:white}.notice{padding:13px;border:1px solid #cdd9de;border-radius:13px;background:#eef3f5;color:#344b58;font-size:12px;line-height:1.75}.warning{background:var(--gold2);border-color:#e6d4ae;color:#6f531e}.small{font-size:11px}.muted{color:var(--muted)}.vocabRow{padding:12px 0;border-bottom:1px solid #ebe8e0}.vocabRow:last-child{border:0}.vocabRow b{color:var(--navy)}.vocabRow small{display:block;color:var(--muted);line-height:1.65}.difficultyStrip{display:grid;grid-template-columns:repeat(4,1fr);gap:7px}.diffBtn{padding:10px;border:1px solid var(--line);border-radius:12px;background:var(--paper);color:var(--navy);font-weight:900;font-size:11px}.scoreBig{text-align:center;font-size:58px;font-weight:900;color:var(--navy)}.resultCard{text-align:center}.weakRow{padding:12px 0;border-bottom:1px solid var(--line)}.weakRow:last-child{border:0}.weakRow b{color:var(--navy)}.weakRow span{float:right;font-size:11px;color:var(--red)}.modalBack{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:16px;background:rgba(20,25,28,.42)}.modal{width:min(560px,100%);max-height:88vh;overflow:auto;background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow)}.settingsRow{padding:12px 0;border-bottom:1px solid var(--line)}.settingsRow label{display:flex;justify-content:space-between;gap:12px;align-items:center}.settingsRow select{padding:8px;border:1px solid #c8cecf;background:white;border-radius:9px}.specialLink{display:block;text-decoration:none;color:inherit}.specialLink .card{border-left:5px solid var(--gold)}html[data-density="compact"] .card,html[data-density="compact"] .qCard{padding:11px}@media(max-width:700px){.grid,.whyGrid{grid-template-columns:1fr}.difficultyStrip{grid-template-columns:repeat(2,1fr)}.hero h1{font-size:28px}.screen{padding-left:12px;padding-right:12px}.brandTitle{font-size:14px}.qCard h2{font-size:19px}.sectionTitle span{display:none}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
.lessonList,.targetList{display:grid;gap:10px}.lessonCard,.targetCard{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:15px;box-shadow:var(--shadow)}.lessonCard{display:grid;grid-template-columns:38px 1fr;gap:12px}.lessonNo{width:34px;height:34px;border-radius:10px;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:900}.lessonCard h3,.targetCard h3{margin:0 0 5px;color:var(--navy)}.lessonCard p,.targetCard p{margin:0;color:var(--muted);font-size:12px;line-height:1.8}.targetTop{display:flex;gap:10px;align-items:center;margin-bottom:8px}.targetTop b{font-size:12px;color:var(--ink)}.targetFocus{margin-top:10px;padding:10px;border-radius:11px;background:var(--green2);font-size:11px}.targetFocus b{display:block;color:var(--green)}.targetFocus span{color:#385249}.zeroRoute{width:100%;text-align:left;cursor:pointer;color:var(--ink)}.zeroRoute:hover{border-color:#aebfc5}.qCard h2{white-space:pre-line}
.missionGrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.missionGrid .card{min-height:155px}.microProgress{margin-top:10px;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:var(--paper)}.microProgress b{display:block;color:var(--navy);font-size:12px}.microProgress span{display:block;color:var(--muted);font-size:10px;margin-top:5px}.milestoneGrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.milestone{padding:12px;border-radius:13px;border:1px solid var(--line);background:var(--paper)}.milestone b{display:block;color:var(--muted);font-size:12px}.milestone span{display:block;color:var(--muted);font-size:10px;margin-top:3px}.milestone.done{background:var(--green2);border-color:#c5dcd1}.milestone.done b{color:var(--green)}.evidenceList{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.evidenceCard{padding:14px;border:1px solid var(--line);border-radius:15px;background:var(--paper)}.evidenceCard h3{margin:0 0 5px;color:var(--navy);font-size:15px}.evidenceCard p{margin:0;color:var(--muted);font-size:11px;line-height:1.7}.evidenceCard b{display:block;margin-top:8px;color:var(--green);font-size:10px}@media(max-width:700px){.missionGrid,.milestoneGrid,.evidenceList{grid-template-columns:1fr}}

/* v4.2 difficulty engine */
.abilityGrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;margin:12px 0}.abilityCard,.engineCard{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:14px;box-shadow:var(--shadow)}.abilityCard>span{display:block;color:var(--muted);font-size:11px}.abilityCard>b{display:block;font-family:Georgia,"Yu Mincho",serif;color:var(--navy);font-size:38px;line-height:1.1;margin-top:3px}.abilityCard>small{color:var(--muted);font-size:10px}.miniMetrics{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}.miniMetrics em{font-style:normal;background:#eef1f2;border-radius:99px;padding:4px 7px;font-size:9px;color:var(--navy)}.engineList{display:grid;gap:11px}.engineCard{border-left:5px solid var(--navy)}.engineHead{display:flex;justify-content:space-between;gap:10px;align-items:flex-start}.engineHead h3{margin:0;color:var(--navy)}.engineHead b{font-size:11px}.confidenceTag{border-radius:99px;padding:4px 8px;font-size:9px;font-weight:900;white-space:nowrap}.confidenceTag.strong{background:var(--green2);color:var(--green)}.confidenceTag.medium{background:var(--gold2);color:var(--gold)}.confidenceTag.provisional{background:var(--red2);color:var(--red)}.readiness{display:flex;align-items:center;gap:12px;margin:12px 0}.readiness>strong{font-size:38px;color:var(--navy)}.readiness b,.readiness small{display:block}.readiness small{font-size:9px;color:var(--muted)}.subjectGap{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin:8px 0}.subjectGap>div{padding:9px;border-radius:11px;background:var(--paper2);text-align:center}.subjectGap span,.subjectGap small{display:block;font-size:9px;color:var(--muted)}.subjectGap b{display:block;color:var(--navy);font-size:18px}.patternText{padding:10px;border-radius:11px;background:#f5f4ef;font-size:10px;line-height:1.75;color:#4a5357}.patternText b{color:var(--navy)}.calMatrix{overflow:auto;border:1px solid var(--line);border-radius:14px;background:var(--paper)}.calRow{min-width:570px;display:grid;grid-template-columns:1.3fr 1.6fr .6fr .6fr .6fr;gap:8px;padding:10px 12px;border-bottom:1px solid var(--line);font-size:10px}.calRow:last-child{border-bottom:0}.calRow.head{background:#edf1f2;color:var(--navy)}.multiChoice{display:flex;gap:10px;align-items:flex-start;min-height:48px;border:1px solid #cfd4d4;background:white;border-radius:12px;padding:12px 14px}.multiChoice input{width:20px;height:20px;flex:0 0 auto}.multiChoice.correct{background:#edf6f1;border-color:#7fac98}.multiChoice.wrong{background:#fbefef;border-color:#cd9292}.engineLaunch{border-left:5px solid var(--gold)!important}@media(max-width:700px){.abilityGrid{grid-template-columns:1fr}.subjectGap{grid-template-columns:repeat(3,1fr)}.calRow{min-width:520px}}

/* v4.3 auto study commander */
.autoCommander{margin:14px 0 4px;padding:16px;border:1px solid #c8d5d9;border-radius:19px;background:linear-gradient(150deg,#fefdf8,#eaf1f0);box-shadow:var(--shadow)}.commanderTop{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.commanderKicker{font-size:9px;letter-spacing:.13em;font-weight:900;color:var(--green)}.commanderTop h2{margin:3px 0 0;color:var(--navy);font-family:Georgia,"Yu Mincho",serif;font-size:22px}.sprintBadge{min-width:92px;padding:8px 10px;border-radius:13px;background:var(--navy);color:#fff;text-align:center}.sprintBadge b,.sprintBadge span{display:block}.sprintBadge b{font-size:18px}.sprintBadge span{font-size:9px;opacity:.8}.recommendCard{margin-top:12px;padding:15px;border-radius:15px;background:var(--paper);border:1px solid var(--line)}.recommendTag{display:inline-block;padding:4px 8px;border-radius:99px;background:var(--green2);color:var(--green);font-size:9px;font-weight:900}.recommendCard h3{margin:8px 0 5px;color:var(--navy);font-size:20px}.recommendCard p{margin:0;color:var(--muted);font-size:12px;line-height:1.8}.btn.huge{min-height:56px;margin-top:12px;font-size:16px}.dailyBoard{display:grid;grid-template-columns:1.2fr .8fr;gap:10px;margin-top:10px}.dailyBoard>div{padding:12px;border:1px solid var(--line);border-radius:13px;background:rgba(255,255,255,.75)}.dailyBoard b{color:var(--navy)}.dailyBoard span{display:block;color:var(--muted);font-size:10px}.subjectBalance{display:grid;grid-template-columns:repeat(3,1fr);gap:5px}.subjectBalance span{text-align:center;padding:6px;border-radius:9px;background:var(--paper2)}.subjectBalance b{display:block;font-size:10px}.coverageBoard{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:10px}.coverageBoard>div{padding:10px;border:1px solid var(--line);border-radius:12px;background:var(--paper)}.coverageBoard span,.coverageBoard small{display:block;font-size:9px;color:var(--muted)}.coverageBoard b{display:block;color:var(--navy);font-size:18px}.focusAlert{display:grid;gap:3px;margin-top:10px;padding:11px 13px;border-radius:12px;border:1px solid #e2c889;background:#fff4d8;color:#6f531e}.focusAlert.strong{border-color:#d69595;background:#fbecec;color:#843d3d}.focusAlert b{font-size:12px}.focusAlert span{font-size:10px;line-height:1.6}.commanderActions{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}.nextStudy{margin:14px 0;padding:14px;border-radius:14px;background:var(--green2);border:1px solid #c7ddd2;text-align:left}.nextStudy>span{font-size:9px;font-weight:900;color:var(--green)}.nextStudy h3{margin:4px 0;color:var(--navy)}.nextStudy p{margin:0 0 10px;color:#40574e;font-size:11px;line-height:1.7}@media(max-width:700px){.dailyBoard,.coverageBoard{grid-template-columns:1fr}.commanderTop{align-items:center}.sprintBadge{min-width:82px}.autoCommander{padding:13px}}

/* v4.4 high-school-3 late-August challenge */
.v44Profile{margin:14px 0;padding:16px;border:1px solid var(--line,#ddd);border-radius:18px;background:linear-gradient(135deg,rgba(255,255,255,.96),rgba(246,243,235,.96));display:flex;gap:14px;align-items:center;justify-content:space-between}
.v44Profile span{font-size:11px;font-weight:800;letter-spacing:.08em;opacity:.7}
.v44Profile h3{margin:4px 0 5px;font-size:18px}
.v44Profile p{margin:0;line-height:1.65;font-size:13px}
.recallGate{margin:14px 0;padding:16px;border:1px dashed rgba(40,60,80,.3);border-radius:16px;background:rgba(245,247,249,.92)}
.recallGate b{display:block;font-size:18px;margin:5px 0}
.recallGate p{margin:0 0 10px;line-height:1.6}
.recallBadge{display:inline-block;font-size:10px;font-weight:800;letter-spacing:.06em;padding:4px 8px;border-radius:999px;background:#202a35;color:white}
.choiceList[hidden]{display:none!important}
.v44Card .choice{min-height:52px;text-align:left;line-height:1.45}
.v44Evidence{margin:12px 0 18px}
.toggleRow{display:flex;gap:10px;align-items:flex-start;padding:8px 0}
.toggleRow input{margin-top:4px;transform:scale(1.2)}
.toggleRow span{display:flex;flex-direction:column;gap:3px}
.toggleRow small{opacity:.72;line-height:1.45}
.v44CommanderNote{display:block;margin-top:3px;opacity:.72;line-height:1.45}
@media(max-width:640px){.v44Profile{align-items:flex-start;flex-direction:column}.v44Profile .btn{width:100%}}

.ouninQuick{display:block;max-width:980px;margin:10px auto 0;padding:11px 16px;border:1px solid var(--line,#d7d4c8);border-radius:12px;background:var(--card,#fff);color:var(--navy,#233746);text-decoration:none;font-weight:800;font-size:13px}.ouninQuick:focus-visible{outline:3px solid #6d91a6;outline-offset:3px}