:root{--ink:#213d38;--muted:#71827c;--green:#19634f;--line:#e2e8e2;--bg:#f5f7f2;--gold:#c3994d}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.7 'Segoe UI','Yu Gothic UI',Meiryo,sans-serif}button,select,input{font:inherit}button{cursor:pointer}button:disabled{cursor:default}button,a,select,input{outline-offset:4px}aside{position:fixed;width:245px;background:#fff;height:100vh;border-right:1px solid var(--line);padding:37px 22px}.brand{display:flex;gap:12px;align-items:center;font-size:21px;font-weight:750}.logo{display:grid;place-items:center;background:var(--green);color:white;width:45px;height:48px;border-radius:13px;font-size:25px}.brand small{display:block;font-size:10px;letter-spacing:2.8px;color:var(--muted)}.navlabel{font-size:10px;letter-spacing:2px;color:#93a39b;margin:50px 14px 16px}nav button{display:block;width:100%;border:0;background:none;text-align:left;padding:14px 15px;margin:6px 0;border-radius:9px;color:#61756e}nav button.active{background:#eaf2ed;color:var(--green);font-weight:700}.sidebottom{position:absolute;bottom:30px;font-size:12px;color:var(--muted)}.sidebottom small{display:block;margin-top:10px}.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#47856c}main{margin-left:245px;padding:0 5vw 28px;max-width:1530px}header{display:flex;justify-content:space-between;padding:24px 0;border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}h1{font-size:30px;letter-spacing:.02em;line-height:1.4;margin:9px 0}h2{font-size:19px;margin:0 0 14px}p{margin:8px 0}.eyebrow{font-size:11px;letter-spacing:2px;color:var(--green);font-weight:700}.intro{margin:30px 0 24px}.muted{color:var(--muted)}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px}.stat{padding:19px 24px;background:#fff;border:1px solid var(--line);border-radius:12px;font-size:12px;color:var(--muted)}.stat b{display:block;font-size:31px;line-height:1.5;color:var(--ink)}.stat b small{font-size:13px;font-weight:400;margin-left:6px}.hero{background:var(--green);border-radius:16px;color:#fff;padding:30px 34px;display:flex;align-items:center;justify-content:space-between;gap:25px;position:relative;overflow:hidden}.hero p{color:#c3dccf;font-size:13px}.hero h2{font-size:24px;margin:8px 0}.hero .eyebrow{color:#b2d3bd}.hero .primary{background:#f4e7c8;color:#31463b;white-space:nowrap}.primary,.secondary{padding:11px 22px;border:0;border-radius:8px;font-weight:650}.primary{background:var(--green);color:white}.primary:disabled{opacity:.4}.secondary{background:#fff;border:1px solid var(--line);color:var(--ink)}.sectionhead{display:flex;align-items:center;justify-content:space-between;margin:30px 0 15px}.sectionhead h2{margin:0}.sectionhead span{font-size:12px;color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.card{background:white;border:1px solid var(--line);border-radius:12px;padding:23px}.cardtop{display:flex;justify-content:space-between;align-items:center}.number{font-size:12px;color:var(--gold);letter-spacing:2px}.card h3{font-size:18px;margin:7px 0}.card p{font-size:12px;color:var(--muted)}.bar{height:5px;background:#eaf0e9;border-radius:6px;overflow:hidden;margin:16px 0 9px}.bar span{display:block;height:100%;background:#5b907a}.card button{border:0;background:none;color:var(--green);font-weight:700;padding:0}.tools{display:flex;gap:10px;flex-wrap:wrap;margin:25px 0}.tools button{font-size:12px}.chip{background:#eaf2ed;border-radius:5px;padding:4px 9px;font-size:12px;color:var(--green)}.quiz{max-width:900px;margin:30px auto}.qhead{display:flex;justify-content:space-between;align-items:center;gap:12px}.question{font-size:22px;line-height:1.8;margin:23px 0}.option{display:flex;align-items:center;gap:14px;width:100%;padding:17px 20px;margin:11px 0;border:1px solid var(--line);border-radius:10px;background:white;text-align:left;color:var(--ink)}.option .option-number{flex-shrink:0;width:29px;height:29px;display:grid;place-items:center;background:#f0f3ee;border-radius:7px;font-size:13px}.option.selected{border:2px solid var(--green);background:#f0f7f1;padding:16px 19px}.option.correct{border:2px solid #36865c;background:#edf7ef;padding:16px 19px}.option.incorrect{border:2px solid #b26350;background:#fbefeb;padding:16px 19px}.feedback{margin-top:22px;padding:22px;background:#edf5ef;border-left:4px solid #448567;border-radius:8px}.feedback.bad{background:#fbf1ec;border-color:#b26350}.feedback h3{margin:0 0 8px}.feedback a{font-size:12px;color:var(--green)}.actions{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-top:24px}.bookmark{background:white;border:1px solid var(--line);border-radius:8px;padding:8px 12px;color:var(--green)}.empty{text-align:center;padding:70px 20px;background:white;border:1px solid var(--line);border-radius:12px}.score{font-size:65px;color:var(--green);font-weight:750}.score small{font-size:20px}.listrow{display:flex;align-items:center;justify-content:space-between;gap:20px;background:white;border:1px solid var(--line);border-radius:10px;margin:10px 0;padding:18px}.listrow p{font-size:14px}.listrow small{color:var(--muted)}input[type=search],select{border:1px solid var(--line);border-radius:8px;padding:10px 13px;background:white;color:var(--ink)}input[type=search]{min-width:240px;flex:1}footer{font-size:11px;color:var(--muted);margin-top:35px;padding-top:18px;border-top:1px solid var(--line)}footer a{color:var(--green)}#notice:not(:empty){background:#fff1d1;padding:12px;margin:15px 0;border-radius:8px}.result{text-align:center;padding:35px}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}@media(max-width:850px){aside{position:static;width:auto;height:auto;padding:15px}.brand{font-size:18px}.navlabel,.sidebottom{display:none}nav{display:flex;flex-wrap:wrap;margin-top:12px}nav button{width:auto;font-size:12px;padding:8px}main{margin:0;padding:0 20px 25px}.hero{padding:24px;flex-wrap:wrap}.stats{gap:9px}.stat{padding:12px}.grid{grid-template-columns:1fr}h1{font-size:25px}header{font-size:10px}.question{font-size:19px}.listrow{align-items:flex-start}.actions{flex-wrap:wrap}}@media(prefers-reduced-motion:no-preference){button{transition:background .15s,transform .15s}button:not(:disabled):hover{filter:brightness(.97);transform:translateY(-1px)}}

/* Mobile and touch layout; desktop styles above are retained. */
html{scroll-padding-bottom:170px}body{-webkit-text-size-adjust:100%;overflow-wrap:anywhere}
button{touch-action:manipulation;min-height:44px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #bd8f38}
nav button{display:flex;align-items:center;gap:12px}.navicon{font-size:21px;line-height:1}
.option{min-height:64px;align-items:flex-start;line-height:1.8}.option .option-text{display:block;flex:1;min-width:0;text-align:left}.option-status{display:block;color:#24623f;font-size:13px;margin-top:5px}.option:disabled{opacity:1;-webkit-text-fill-color:currentColor}
.listrow>div{min-width:0}.listrow>button{flex-shrink:0;min-width:68px}.qhead>span:last-child{flex-shrink:0}.bookmark{flex-shrink:0;min-height:44px}.feedback{scroll-margin-top:16px}.feedback a{display:inline-block;min-height:44px;padding:10px 0;overflow-wrap:anywhere}
.card button{min-height:44px;padding:8px 6px}.tools input,.tools select{min-height:48px;font-size:16px}.tools input{min-width:0}
@media(max-width:850px){
 :root{--bottom-nav:68px}
 aside{padding:14px 20px;border-right:0;border-bottom:1px solid var(--line);background:#fff}
 .brand{font-size:19px;gap:10px}.brand small{font-size:9px;letter-spacing:2px}.logo{width:38px;height:40px;font-size:22px;border-radius:10px}
 nav{position:fixed;bottom:0;left:0;right:0;z-index:30;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:4px;height:calc(var(--bottom-nav) + env(safe-area-inset-bottom,0px));margin:0;padding:6px max(8px,env(safe-area-inset-right,0px)) calc(6px + env(safe-area-inset-bottom,0px)) max(8px,env(safe-area-inset-left,0px));border-top:1px solid var(--line);background:#fff;box-shadow:0 -3px 20px #213d3808}
 nav button{display:flex;flex-direction:column;justify-content:center;align-items:center;width:100%;min-width:0;min-height:54px;gap:4px;margin:0;padding:6px 2px;text-align:center;font-size:11px;line-height:1.3;border-radius:8px;color:#526a60}
 nav .navicon{font-size:22px}nav button.active{background:#eaf2ed}
 main{padding:0 max(20px,env(safe-area-inset-right,0px)) calc(var(--bottom-nav) + 24px + env(safe-area-inset-bottom,0px)) max(20px,env(safe-area-inset-left,0px));width:100%}
 header{gap:10px;padding:13px 0;font-size:11px}header>span:first-child{max-width:60%}header #date{text-align:right}
 .intro{margin:24px 0 20px}.intro h1{font-size:clamp(23px,4vw,29px);line-height:1.55}.intro p{font-size:14px}
 .stats{gap:10px;margin-bottom:20px}.stat{padding:14px 12px;font-size:12px}.stat b{font-size:29px}
 .hero{display:block;padding:24px;border-radius:14px}.hero h2{font-size:23px;line-height:1.5}.hero .primary{margin-top:16px;width:100%;min-height:50px}.hero p{font-size:14px}
 .grid{grid-template-columns:repeat(2,minmax(0,1fr))}.card{padding:20px}.cardtop{gap:8px}.cardtop small{font-size:12px}.cardtop button{white-space:nowrap}
 .sectionhead{gap:12px;margin-top:25px}.sectionhead h2{font-size:19px}.sectionhead>span{font-size:11px;text-align:right}
 .tools{gap:10px}.tools button{min-height:48px;font-size:14px}.tools input{flex-basis:100%;width:100%}.tools select{flex:1;min-width:0}.tools #practice{flex:1}
 .quiz{margin:22px auto}.qhead{gap:8px}.qhead .eyebrow{letter-spacing:1px;font-size:11px}.qhead>.muted{font-size:13px}.chip{font-size:12px}
 .question{font-size:20px;line-height:1.8;margin:22px 0;font-weight:650}
 .option{padding:16px;gap:12px;font-size:16px;border-radius:12px}.option.selected,.option.correct,.option.incorrect{padding:15px}.option .option-number{margin-top:1px}
 .actions{position:sticky;bottom:calc(var(--bottom-nav) + env(safe-area-inset-bottom,0px));z-index:20;display:grid;grid-template-columns:auto minmax(0,1fr);gap:8px 12px;align-items:center;margin:24px -4px 0;padding:12px 4px;background:var(--bg);border-top:1px solid var(--line);box-shadow:0 -8px 18px #f5f7f2}
 .actions>.muted{grid-column:1/-1;grid-row:1;text-align:center;font-size:12px}.actions button{min-height:50px;font-size:15px;padding:11px 16px}.actions #quit{font-size:13px}
 .feedback{padding:20px;font-size:16px;line-height:1.85}.feedback h3{font-size:18px}.feedback a{font-size:13px}
 .result{padding:30px 20px}.result h1{font-size:25px}.result .tools{flex-direction:column}.score{font-size:58px}
 footer{font-size:12px;line-height:1.85;padding-top:18px;margin-top:26px}
 .listrow{gap:12px;padding:16px}.listrow p{font-size:15px;line-height:1.8}.listrow small{font-size:12px}
}
@media(max-width:600px){
 .grid{grid-template-columns:1fr}.tools>#all{flex-basis:100%}.tools>#export,.tools>#restore{flex:1;padding:11px 8px;font-size:13px}
 .listrow{display:block}.listrow>button{display:block;margin-top:12px;width:100%;min-height:44px}
}
@media(max-width:374px){
 aside{padding:12px 14px}main{padding-left:max(14px,env(safe-area-inset-left,0px));padding-right:max(14px,env(safe-area-inset-right,0px))}
 .stats{gap:6px}.stat{padding:12px 8px;font-size:11px}.stat b{font-size:25px}.stat b small{font-size:11px;margin-left:3px}
 .hero{padding:20px}.hero h2{font-size:21px}.question{font-size:19px}.option{gap:10px;padding:14px}.option.selected,.option.correct,.option.incorrect{padding:13px}.qhead .chip{max-width:66%}
 .sectionhead h2{font-size:18px}.tools #practice{flex-basis:100%}
}
@media(hover:none){button:not(:disabled):hover{transform:none;filter:none}}

/* Official past-exam library */
.mini-hero{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:0 0 18px;padding:20px 24px;background:#fff;border:1px solid var(--line);border-radius:12px}.mini-hero strong,.mini-hero span{display:block}.mini-hero span{font-size:13px;color:var(--muted);margin-top:3px}
.legal-note{margin:20px 0;padding:20px 23px;background:#fff8e9;border:1px solid #ecdcb8;border-radius:12px;color:#4e4a39}.legal-note p{font-size:13px;margin:5px 0}.legal-note a{color:var(--green);font-size:13px;font-weight:650}
.past-tools{align-items:center}.past-tools .muted{margin-left:auto}.past-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.past-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:21px}.past-card h2{font-size:18px;margin:10px 0 4px}.past-card p{color:var(--muted);font-size:13px;min-height:23px}.past-card-actions{display:flex;gap:9px;margin-top:15px}.past-card-actions>*{flex:1;text-align:center}.button-link{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;min-height:44px}.back-link{border:0;background:transparent;color:var(--green);font-weight:650;padding:10px 0;margin:10px 0}.past-exam{max-width:1040px;margin:20px auto}.past-exam .qhead h1{font-size:27px;margin:5px 0 17px}.exam-guide{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 23px;margin:12px 0 20px;background:#eaf2ed;border-radius:12px}.exam-guide p{font-size:13px;color:#526a60}.exam-guide .button-link{flex-shrink:0}.past-result{display:flex;align-items:center;gap:24px;margin:20px 0;padding:20px 24px;background:var(--green);color:#fff;border-radius:13px}.past-result div span{display:block;font-size:12px;color:#c7ddd4}.past-result div strong{font-size:38px;line-height:1.2}.past-result small{font-size:15px}.past-result p{color:#d5e6df}.past-answer-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}.past-answer{margin:0;min-width:0;padding:12px;background:#fff;border:1px solid var(--line);border-radius:10px}.past-answer legend{padding:0 5px;font-size:13px;font-weight:700;color:var(--ink)}.past-answer>div{display:grid;grid-template-columns:repeat(4,1fr);gap:4px}.past-answer button{min-height:38px;padding:0;border:1px solid var(--line);border-radius:7px;background:#f6f8f4;color:var(--ink)}.past-answer button.selected{border:2px solid var(--green);background:#dfeee5;color:var(--green);font-weight:750}.past-answer small{display:block;margin-top:8px;color:var(--muted);font-size:11px}.past-answer.correct{border-color:#4a9568;background:#f2faf4}.past-answer.incorrect{border-color:#b26350;background:#fff4ef}.past-answer.unanswered{border-color:#c99e4c;background:#fff9ec}.past-answer.void{border-style:dashed;background:#f5f5f2}.exam-submit{position:sticky;bottom:10px;z-index:18;display:flex;align-items:center;gap:10px;margin:24px 0;padding:14px 16px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 8px 30px #213d3824}.exam-submit>div{margin-right:auto}.exam-submit span{display:block;color:var(--muted);font-size:12px}.exam-submit button{min-width:130px}
@media(max-width:1050px){.past-answer-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media(max-width:850px){
 :root{--bottom-nav:72px}.past-grid{grid-template-columns:1fr}.mini-hero{padding:18px}.mini-hero .primary{flex-shrink:0}nav{grid-template-columns:repeat(5,minmax(0,1fr));padding-left:4px;padding-right:4px}nav button{font-size:10px}.past-exam{margin-top:10px}.past-exam .qhead{align-items:flex-start}.past-exam .qhead h1{font-size:22px}.exam-guide{align-items:stretch;flex-direction:column;padding:18px}.exam-guide .button-link{width:100%;min-height:50px}.past-answer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.past-answer{padding:11px}.past-answer button{min-height:44px}.exam-submit{bottom:calc(var(--bottom-nav) + env(safe-area-inset-bottom,0px));display:grid;grid-template-columns:1fr 1fr;padding:12px;margin-left:-4px;margin-right:-4px}.exam-submit>div{grid-column:1/-1;margin:0;text-align:center}.exam-submit button{min-width:0;min-height:50px}.past-result{align-items:flex-start;flex-direction:column;gap:7px}.past-result p{margin:0}.past-tools .muted{width:100%;margin:0}.past-card p{min-height:0}
}
@media(max-width:600px){.mini-hero{display:block}.mini-hero .primary{width:100%;margin-top:12px}.past-card-actions{flex-direction:column}.past-answer-grid{grid-template-columns:1fr 1fr}.past-exam .qhead>.chip{font-size:11px}.legal-note{padding:18px}.past-result div strong{font-size:34px}}
@media(max-width:360px){nav button{font-size:9px}.navicon{font-size:19px!important}.past-answer-grid{grid-template-columns:1fr}.past-answer>div{gap:7px}}

.scoring-note{font-size:12px;line-height:1.8}
@media(min-width:361px) and (max-width:600px){.past-answer>div{grid-template-columns:repeat(2,minmax(44px,1fr))}}

.embedded-prompt{font-size:19px;line-height:1.95;white-space:pre-line;margin:24px 0;overflow-wrap:anywhere}.question-image{max-width:100%;overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:8px}.question-image img{display:block;width:100%;height:auto}.question-image.zoomed img{width:950px;max-width:none}.image-controls,.question-navigation{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin:20px 0}.image-controls span{font-size:13px;color:var(--muted)}.source-original{margin:16px 0}.source-original summary,.answer-overview summary{cursor:pointer;min-height:44px;padding:10px 0;color:var(--green)}.embedded-exam .option-text{white-space:pre-line;line-height:1.85}.embedded-number{font-size:22px}.answer-map{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}.answer-map button{min-width:0;padding:10px 3px}.answer-map small{display:block;font-size:11px}.map-correct{background:#e6f5eb!important}.map-wrong{background:#fff0e9!important}.embedded-exam .exam-submit{margin-top:30px}.embedded-exam .qhead h1{font-size:25px}.question-navigation select{min-height:44px}.question-navigation button{min-height:44px}.question-image{touch-action:pan-x pan-y pinch-zoom}@media(max-width:600px){.embedded-prompt{font-size:17px;line-height:1.9}.embedded-exam .qhead{flex-wrap:wrap}.answer-map{grid-template-columns:repeat(4,minmax(0,1fr))}.question-navigation{gap:8px}.question-navigation button{font-size:12px;padding:10px}.embedded-exam .option{align-items:flex-start}.embedded-exam .option-text{font-size:15px}}
.choice-image{display:block;max-width:100%;overflow-x:auto;touch-action:pan-x pan-y pinch-zoom}.choice-image img{display:block;width:100%;height:auto;max-width:100%}.choice-image.zoomed img{width:950px;max-width:none}.option-text{min-width:0;width:100%}.embedded-exam .exam-submit{position:static;box-shadow:none}
.explain{margin:22px 0;border:1px solid var(--line);border-radius:10px;background:#fff}.explain>summary{cursor:pointer;min-height:44px;padding:13px 18px;color:var(--green);font-weight:700}.explain-body{padding:0 18px 18px;border-top:1px solid var(--line)}.explain-summary{margin:16px 0;line-height:1.9}.explain-choices{list-style:none;margin:0;padding:0}.explain-choices li{display:flex;gap:12px;align-items:flex-start;padding:12px 13px;border-radius:8px;line-height:1.85}.explain-choices li+li{margin-top:6px}.explain-choices .explain-num{flex-shrink:0;width:26px;height:26px;display:grid;place-items:center;background:#f0f3ee;border-radius:7px;font-size:13px}.explain-choices li.is-answer{background:#edf7ef}.explain-choices li.is-answer .explain-num{background:#cde8d5;color:#2d6a4a;font-weight:700}.explain-law{margin-top:16px;font-size:13px;color:var(--muted)}.explain-note{margin-top:10px;padding:11px 13px;background:#fff6e4;border-radius:8px;font-size:13px;line-height:1.8}@media(max-width:600px){.explain-body{padding:0 13px 15px}.explain-summary,.explain-choices li{font-size:15px}}

/* 2026-09-28: サイドバーの折りたたみ（#navToggle・body.nav-collapsed）と広告掲載欄（.ad-slot） */
#navToggle{position:absolute;top:10px;right:10px;width:30px;height:30px;border:1px solid var(--line);background:#fff;border-radius:8px;color:var(--muted);font-size:14px;line-height:1;padding:0}
aside{transition:width .15s ease;}
main{transition:margin-left .15s ease;}
body.nav-collapsed aside{width:76px;padding:37px 13px}
body.nav-collapsed main{margin-left:76px}
body.nav-collapsed .brand-text,body.nav-collapsed .navlabel,body.nav-collapsed .navtext,body.nav-collapsed .sidebottom{display:none}
body.nav-collapsed .brand{justify-content:center}
body.nav-collapsed nav button{text-align:center;padding:14px 0}
body.nav-collapsed nav button .navicon{margin:0}
body.nav-collapsed #navToggle{right:23px}
@media(max-width:850px){#navToggle{display:none}body.nav-collapsed aside{width:auto;padding:15px}body.nav-collapsed main{margin:0}body.nav-collapsed .brand-text{display:block}body.nav-collapsed .navtext{display:inline}}
.ad-slot{margin-top:35px;border:1px dashed var(--line);border-radius:12px;background:#fff;padding:14px 18px;text-align:center}
.ad-label{display:inline-block;font-size:10px;letter-spacing:2px;color:#93a39b;border:1px solid var(--line);border-radius:4px;padding:1px 8px;margin-bottom:8px}
.ad-content{min-height:60px;display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:10px}
.ad-content img{max-width:100%;height:auto}
.ad-placeholder{color:var(--muted);font-size:12px;margin:0}

/* アフィリエイトリンク（2026-09-29 楽天） */
.ad-link { display:inline-block; padding:10px 22px; border:1.5px solid #bf0000; color:#bf0000; border-radius:10px; text-decoration:none; font-weight:600; font-size:14.5px; }
.ad-link:hover { background:#bf0000; color:#fff; }

/* 2026-09-30 タイマー表示（50問演習・本試験と同じ2時間） */
.chips { display: inline-flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* 2026-09-30 A8 画像バナー用（広告枠。ボタン風の枠は付けない） */
.ad-content .ad-banner { display: inline-block; line-height: 0; vertical-align: middle; }
.ad-content .ad-banner img { max-width: 100%; height: auto; }

/* 2026-09-30 未ログイン時のナビ（ランディング以外のボタンを隠す） */
nav button[hidden]{display:none!important}