*{box-sizing:border-box} :root{
  --bg:#f3f6fb;--panel:#fff;--ink:#172033;--muted:#68748a;--line:#dbe2ee;
  --primary:#2457d6;--primary-dark:#173f9e;--accent:#eaf0ff;--good:#1c7a4d;
  --warn:#b36b00;--danger:#b73a3a;--shadow:0 16px 40px rgba(28,45,90,.10)
}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;color:var(--ink);background:var(--bg)}
button,input,textarea,select{font:inherit} button{cursor:pointer}
.topbar{height:76px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 28px;position:sticky;top:0;z-index:10}
.brand{font-weight:900;letter-spacing:.08em;font-size:20px}.subtitle{font-size:12px;color:var(--muted);margin-top:3px}
.top-actions{display:flex;gap:10px}.container{max-width:1180px;margin:0 auto;padding:32px 22px 70px}
.screen,.stage{display:none}.screen.active,.stage.active{display:block}
.hero-card,.panel{background:var(--panel);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:34px}
.hero-card{max-width:760px;margin:28px auto;text-align:center;padding:50px}
.hero-card h1{font-size:42px;line-height:1.25;margin:12px 0 18px}.lead{font-size:18px;color:var(--muted);line-height:1.8}
.eyebrow,.step-label{font-size:12px;letter-spacing:.12em;color:var(--primary);font-weight:800;text-transform:uppercase}
.narrow{max-width:820px;margin:0 auto}
h2{font-size:30px;margin:8px 0 22px}h3{margin:14px 0}
label{display:block;font-weight:700;color:#27324a;text-align:left}
input,textarea,select{width:100%;border:1px solid #cfd8e7;border-radius:12px;padding:13px 14px;background:#fff;color:var(--ink);outline:none;margin-top:8px}
input:focus,textarea:focus,select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(36,87,214,.12)}
textarea{min-height:120px;resize:vertical;line-height:1.65}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:24px 0}
.form-grid.compact{max-width:620px;margin:24px auto}.primary,.secondary,.ghost{border:none;border-radius:12px;padding:12px 18px;font-weight:800}
.primary{background:var(--primary);color:#fff}.primary:hover{background:var(--primary-dark)}.primary:disabled{opacity:.45;cursor:not-allowed}
.secondary{background:#eef2f8;color:#27324a}.ghost{background:transparent;color:#47536a;border:1px solid var(--line)}.wide{width:100%;max-width:400px}
.hint{font-size:13px;color:var(--muted)}.role-box,.scenario-box,.notice-list,.question-banner,.logic-summary,.analysis-card{background:#f8faff;border:1px solid var(--line);border-radius:16px;padding:20px;margin:20px 0}
.role-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.role-grid div{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px}.role-grid span{display:block;color:var(--muted);font-size:13px;margin-top:4px}
.role-intro-box{background:#eef4ff;border:1px solid #cddafb;border-left:6px solid var(--primary);border-radius:16px;padding:20px;margin:20px 0;font-size:17px;line-height:1.8}.request-label{margin-top:28px}.scenario-box{font-size:17px;line-height:1.8}.notice-list{display:grid;gap:10px}.game-header{display:flex;justify-content:space-between;gap:22px;align-items:center;margin-bottom:18px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px 22px}
.team-line{font-size:15px}.muted{color:var(--muted)}.stage-nav{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}.stage-chip{padding:7px 10px;border-radius:999px;background:#eef2f8;color:#68748a;font-size:13px;font-weight:700}.stage-chip.active{background:var(--primary);color:white}.stage-chip.done{background:#e5f6ee;color:var(--good)}
.score-cards{display:flex;gap:10px}.score-cards div{min-width:88px;padding:12px 14px;background:#f6f8fc;border-radius:12px;text-align:center}.score-cards span{display:block;font-size:12px;color:var(--muted)}.score-cards b{font-size:24px}
.stage-intro{font-size:16px;color:var(--muted);line-height:1.7}.hint-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:18px 0}.hint-grid div{background:var(--accent);padding:13px;border-radius:12px;font-size:14px;font-weight:700}
.counter{float:right;font-size:12px;color:var(--muted);font-weight:500;margin-top:5px}.button-row{display:flex;justify-content:flex-end;gap:10px;margin-top:22px}
.feedback{margin-top:22px;padding:20px;border-radius:16px;background:#fffaf1;border:1px solid #f0d9aa}.feedback.good{background:#f0fbf6;border-color:#b9e3cd}.feedback h3{margin-top:0}.feedback-grid{display:grid;grid-template-columns:110px 1fr;gap:10px;font-size:14px}.feedback .score{font-size:24px;font-weight:900}
.hidden{display:none!important}.budget-bar{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;background:#172033;color:#fff;border-radius:14px;margin:18px 0}
.source-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.source-card{border:1px solid var(--line);border-radius:16px;padding:16px;background:#fff}.source-card.selected{border-color:var(--primary);background:#f5f8ff}.source-title{font-weight:900;margin-bottom:6px}.source-meta{font-size:13px;color:var(--muted);line-height:1.55}.source-actions{display:flex;justify-content:space-between;align-items:center;margin-top:12px}.point{font-weight:800;color:var(--primary)}
.selected-area{margin-top:28px;padding-top:24px;border-top:1px solid var(--line)}.reason-block{padding:14px;background:#f8faff;border-radius:12px;margin-bottom:12px}
.split-layout{display:grid;grid-template-columns:280px 1fr;gap:22px}.split-layout aside{background:#f8faff;border:1px solid var(--line);border-radius:14px;padding:16px}.mini-source{background:#fff;border:1px solid var(--line);padding:12px;border-radius:10px;margin-bottom:10px}.mini-source button{margin-top:8px}.stack-form{display:grid;gap:16px}
.logic-summary{display:grid;gap:10px}.logic-summary div{display:grid;grid-template-columns:70px 1fr;gap:12px}.logic-summary b{color:var(--primary)}.paragraph-guide{display:flex;gap:10px;margin:18px 0}.paragraph-guide span{background:var(--accent);border-radius:999px;padding:8px 12px;font-weight:700;font-size:13px}
.edit-layout{display:grid;grid-template-columns:1fr 320px;gap:22px}.checklist{background:#f8faff;border:1px solid var(--line);border-radius:14px;padding:18px;height:max-content}.checklist label{font-weight:600;margin:14px 0}.checklist input{width:auto;margin-right:8px}.total-count{text-align:right;color:var(--muted);margin-top:8px}
.result-panel{max-width:900px;margin:0 auto}.result-hero{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.result-hero div{background:#172033;color:#fff;border-radius:16px;padding:22px;text-align:center}.result-hero span{display:block;font-size:13px;opacity:.8}.result-hero b{font-size:38px}.result-hero small{font-size:14px}.breakdown{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin:20px 0}.breakdown div{padding:14px;background:#f6f8fc;border-radius:12px;text-align:center}.breakdown span{display:block;color:var(--muted);font-size:12px}.breakdown b{font-size:22px}
.final-feedback{background:#f8faff;border:1px solid var(--line);border-radius:16px;padding:20px}.teacher-heading{display:flex;justify-content:space-between;align-items:start}.teacher-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:20px 0}.teacher-summary div{padding:18px;border-radius:14px;background:#172033;color:#fff}.teacher-summary span{display:block;font-size:12px;opacity:.8}.teacher-summary b{font-size:28px}
.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;background:#fff}th,td{padding:14px;border-bottom:1px solid var(--line);text-align:left}th{font-size:13px;color:var(--muted);background:#f8faff}.analysis-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.analysis-grid div{background:#fff;border:1px solid var(--line);padding:14px;border-radius:12px}.analysis-grid span{float:right;color:var(--primary);font-weight:800}
.modal{position:fixed;inset:0;background:rgba(10,18,35,.58);display:flex;align-items:center;justify-content:center;padding:20px;z-index:50}.modal-card{background:#fff;border-radius:18px;max-width:820px;width:100%;max-height:85vh;overflow:auto;padding:28px;position:relative}.modal-close{position:absolute;right:14px;top:12px;border:none;background:transparent;font-size:28px}.source-content{line-height:1.75}.source-content table{margin:12px 0}.source-content caption{font-weight:800;text-align:left;margin-bottom:6px}
@media(max-width:800px){.topbar{padding:0 16px}.subtitle{display:none}.container{padding:18px 12px}.hero-card,.panel{padding:22px}.hero-card h1{font-size:32px}.form-grid,.role-grid,.source-grid,.split-layout,.edit-layout,.result-hero,.teacher-summary{grid-template-columns:1fr}.hint-grid{grid-template-columns:1fr 1fr}.game-header{align-items:flex-start;flex-direction:column}.score-cards{width:100%}.score-cards div{flex:1}.breakdown{grid-template-columns:repeat(2,1fr)}}

.stage-title-row{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}
.stage-title-row h2{margin-bottom:12px}
.brief-review-btn{white-space:nowrap;margin-top:2px}
.hint-heading{font-size:14px;font-weight:900;color:#34415b;margin:20px 0 8px}
.brief-modal .role-intro-box,.brief-modal .scenario-box{margin-top:14px}
@media(max-width:700px){
  .stage-title-row{display:block}
  .brief-review-btn{margin:0 0 14px}
}

.thinking-prompt{display:flex;gap:10px;align-items:flex-start;background:#f6f8fc;border:1px solid var(--line);border-radius:12px;padding:13px 15px;margin:16px 0 10px}
.thinking-prompt b{white-space:nowrap;color:#34415b}.thinking-prompt span{color:var(--muted);font-size:14px;line-height:1.55}
.source-use-box{background:#f8faff;border:1px solid var(--line);border-radius:14px;padding:16px}
.source-use-title{font-weight:900;color:#27324a}.source-use-box p,.aside-note{font-size:13px;color:var(--muted);line-height:1.55}
.source-check-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:12px}
.source-check{display:flex;align-items:flex-start;gap:8px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:11px;font-weight:600}
.source-check input{width:auto;margin:2px 0 0}.source-check span{line-height:1.45}
.used-source{border-color:var(--primary);background:#f4f7ff}
.stage4-layout{align-items:start}
@media(max-width:800px){.source-check-grid{grid-template-columns:1fr}.thinking-prompt{display:block}.thinking-prompt b{display:block;margin-bottom:5px}}

.member-entry-box{background:#f8faff;border:1px solid var(--line);border-radius:16px;padding:18px;margin:20px 0}
.member-entry-box h3{margin-top:0}
.member-name-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.question-review{margin-top:24px;padding:22px;border-radius:16px;background:#f4f7ff;border:1px solid #cdd9f7}
.question-review h3{font-size:24px;margin:7px 0 10px}
.question-review>p{color:var(--muted);line-height:1.7}
.question-before{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:15px 0}
.question-before b{display:block;color:var(--primary);font-size:13px;margin-bottom:7px}
.question-before span{line-height:1.65}
@media(max-width:700px){.member-name-grid{grid-template-columns:1fr}}

.figure-builder{background:#f8faff;border:1px solid var(--line);border-radius:14px;padding:18px;margin:18px 0}
.figure-builder h3{margin-top:0}
.figure-summary{background:#f8faff;border:1px solid var(--line);border-radius:14px;padding:18px;margin:16px 0 22px}
.figure-summary h3{margin:0 0 8px}

.prep-guide{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:20px 0}
.prep-guide>div{display:flex;gap:10px;align-items:flex-start;background:#f8faff;border:1px solid var(--line);border-radius:14px;padding:14px}
.prep-guide>div>b{display:flex;align-items:center;justify-content:center;min-width:34px;height:34px;border-radius:10px;background:var(--primary);color:#fff;font-size:18px}
.prep-guide span{font-size:13px;line-height:1.55;color:var(--muted)}
.prep-guide strong{display:block;color:var(--ink);font-size:14px}
.prep-label{display:flex;align-items:center;gap:8px}
.prep-label>b{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:8px;background:var(--primary);color:#fff}
.prep-layout textarea{min-height:110px}
@media(max-width:900px){.prep-guide{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.prep-guide{grid-template-columns:1fr}}

.figure-controls{grid-template-columns:repeat(3,minmax(0,1fr))}
.chart-choice-guide{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:10px 0 16px}
.chart-choice-guide span{background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:13px;line-height:1.45;color:var(--muted)}
.chart-choice-guide b{color:var(--ink)}
.figure-action-row{justify-content:flex-start;margin-top:14px}
.figure-preview{margin-top:18px;padding:16px;background:#fff;border:1px solid var(--line);border-radius:14px;min-height:190px}
.figure-preview.compact{margin-top:12px}
.figure-placeholder{min-height:150px;display:flex;align-items:center;justify-content:center;text-align:center;color:var(--muted);background:#f8faff;border:1px dashed #bdc8dc;border-radius:10px;padding:24px}
.generated-figure-canvas{display:block;width:100%;height:auto;max-width:900px;margin:0 auto;background:#fff}
.figure-caption{text-align:center;font-weight:700;margin-top:10px;color:var(--ink)}
.figure-warning{margin-top:10px;padding:10px 12px;border-radius:9px;background:#fff5dc;color:#775714;font-size:13px}
@media(max-width:900px){.figure-controls{grid-template-columns:1fr}.chart-choice-guide{grid-template-columns:1fr}}

.figure-step{background:#fff;border:1px solid var(--line);border-radius:12px;padding:15px;margin:12px 0}
.figure-step-heading{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-weight:700;color:var(--ink)}
.figure-step-heading>b{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:8px;background:var(--primary);color:#fff}
.raw-data-preview{margin-top:12px;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff}
.raw-data-preview table{width:100%;border-collapse:collapse;margin:0}
.raw-data-preview th,.raw-data-preview td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left}
.raw-data-preview th:last-child,.raw-data-preview td:last-child{text-align:right}
.raw-data-preview tr:last-child td{border-bottom:none}
.raw-data-heading{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:12px;background:#f8faff;border-bottom:1px solid var(--line)}
.raw-data-heading div{display:flex;flex-direction:column;gap:3px}
.raw-data-heading span{font-size:12px;color:var(--muted)}
.raw-data-unit{white-space:nowrap}
.figure-design-controls.locked{opacity:.65;background:#f2f4f8}
.figure-unlock-message{margin:0 0 12px;padding:10px 12px;border-radius:9px;background:#eef3ff;color:#3d4d78;font-size:13px}
.figure-design-controls:not(.locked) .figure-unlock-message{background:#edf9f4;color:#286650}

.submission-note{margin-top:20px;padding:16px 18px;background:#eef4ff;border:1px solid #cbd8f4;border-radius:13px}
.submission-note h3{margin:0 0 6px}
.submission-note p{margin:0;color:var(--muted);line-height:1.65}