:root{--sumi: #231F1D;--shu: #B7282E;--bg: #F6F3EF;--card: #FFFFFF;--line: #E3DDD6;--text: #231F1D;--muted: #7A716B;--ok: #2E7D4F;--ok-bg: #E7F3EC;--ng-bg: #FBEAEA;font-family:Meiryo UI,Hiragino Sans,Noto Sans JP,sans-serif;color:var(--text)}*{box-sizing:border-box}body{margin:0;background:var(--bg);-webkit-text-size-adjust:100%}button,input,select,textarea{font:inherit;color:inherit}h1,h2,h3{margin:0}h3{font-size:15px;margin-bottom:8px}.app{min-height:100vh;display:flex;flex-direction:column}main{width:100%;max-width:760px;margin:0 auto;padding:16px;flex:1}.stack{display:flex;flex-direction:column;gap:14px}.center{display:grid;place-items:center;min-height:60vh}.muted{color:var(--muted)}.hint{color:var(--muted);font-size:12px;margin:0}.error{color:var(--shu);margin:0}.ok-msg{color:var(--ok);margin:0}.foot{text-align:center;font-size:11px;padding:16px}.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.row.between{justify-content:space-between}.grow{flex:1}.nowrap{white-space:nowrap}.bar{background:var(--sumi);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:10px 16px;padding-top:calc(10px + env(safe-area-inset-top));position:sticky;top:0;z-index:5}.brand{background:none;border:0;display:flex;align-items:center;gap:8px;font-weight:700;color:#fff;cursor:pointer;padding:0}.mark{display:inline-grid;place-items:center;width:28px;height:28px;background:var(--shu);color:#fff;border-radius:4px;font-weight:700}.mark.big{width:56px;height:56px;font-size:30px}.who{display:flex;gap:12px;align-items:center;font-size:13px}.card{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:16px}label{display:flex;flex-direction:column;gap:4px;font-size:13px;font-weight:700}input,select,textarea{border:1px solid var(--line);border-radius:4px;padding:10px;background:#fff;font-weight:400;font-size:16px;width:100%}textarea{resize:vertical}.fixed{padding:10px;background:var(--bg);border-radius:4px;font-weight:400;font-size:16px}button.primary,button.secondary{border-radius:6px;padding:14px 16px;font-weight:700;cursor:pointer;font-size:15px}button.primary{background:var(--shu);color:#fff;border:0}button.primary:disabled{background:#cfc7c0;cursor:default}button.secondary{background:#fff;border:1px solid var(--sumi);color:var(--sumi)}button.sm{padding:6px 12px;font-size:13px}button.link{background:none;border:0;color:var(--shu);cursor:pointer;padding:4px 0;font-size:13px}button.link.light{color:#fff;opacity:.85}button.link.danger,a.link{color:var(--shu);font-size:13px}.back{align-self:flex-start}.login{max-width:420px;margin:0 auto;padding:40px 16px;display:flex;flex-direction:column;gap:16px}.login-head{text-align:center;display:flex;flex-direction:column;align-items:center;gap:8px}.login-head h1{font-size:22px}.login-head p{margin:0;color:var(--muted)}.login form{display:flex;flex-direction:column;gap:14px}.hero{background:var(--sumi);color:#fff;border-radius:6px;padding:18px;display:flex;flex-direction:column;gap:10px;border-left:4px solid var(--shu)}.eyebrow{font-size:12px;opacity:.75;letter-spacing:.05em}.count{font-size:15px}.count b{font-size:34px;margin-right:4px}.done{margin:0;font-weight:700}.meter{height:8px;background:#7f7f7f40;border-radius:4px;overflow:hidden}.meter span{display:block;height:100%;background:var(--shu);transition:width .3s}.meter.sm{display:inline-block;width:60px;height:6px;margin-right:6px;vertical-align:middle}.lessons{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.lesson{width:100%;display:flex;gap:12px;align-items:center;text-align:left;background:var(--card);border:1px solid var(--line);border-radius:6px;padding:12px;cursor:pointer}.lesson .num{flex:none;width:28px;height:28px;border-radius:50%;border:1px solid var(--sumi);display:grid;place-items:center;font-weight:700;font-size:13px}.lesson .body{flex:1;display:flex;flex-direction:column;gap:2px;min-width:0}.lesson .title{font-weight:700}.lesson .desc{font-size:12px;color:var(--muted)}.badge{flex:none;font-size:12px;padding:3px 8px;border-radius:10px;background:var(--bg);color:var(--muted);font-weight:700}.badge.ok{background:var(--ok-bg);color:var(--ok)}.badge.ng{background:var(--ng-bg);color:var(--shu)}.lesson-title{font-size:20px}.steps{list-style:none;display:flex;margin:0;padding:0;gap:4px}.steps li{flex:1;text-align:center;font-size:12px;padding:6px 0;border-bottom:3px solid var(--line);color:var(--muted)}.steps li.on{border-color:var(--shu);color:var(--text);font-weight:700}.video{position:relative;aspect-ratio:16 / 9;background:#000;border-radius:6px;overflow:hidden}.video>div,.video iframe{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%}.video.placeholder{display:grid;place-items:center;text-align:center;color:#fff;background:var(--sumi)}.watch{display:flex;flex-direction:column;gap:4px}.q{border:1px solid var(--line);display:flex;flex-direction:column;gap:8px;margin:0}.q legend{font-weight:700;padding:0;margin-bottom:4px;float:left;width:100%}.qn{color:var(--shu);margin-right:6px}.choice{flex-direction:row;align-items:center;gap:10px;font-weight:400;font-size:15px;border:1px solid var(--line);border-radius:6px;padding:12px;cursor:pointer}.choice input{width:auto;flex:none;accent-color:var(--shu)}.choice.on{border-color:var(--shu);background:var(--ng-bg)}.result{border-radius:6px;padding:20px;text-align:center}.result.ok{background:var(--ok-bg);color:var(--ok)}.result.ng{background:var(--ng-bg);color:var(--shu)}.result .big{font-size:30px;font-weight:700}.review{padding:12px}.review.ok .mark-line{color:var(--ok)}.review.ng .mark-line{color:var(--shu);font-weight:700}.explain{margin:8px 0 0;font-size:14px}.row>button.primary,.row>button.secondary:not(.sm){flex:1}.row select{width:auto}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line)}.tabs button{background:none;border:0;padding:10px 14px;cursor:pointer;border-bottom:3px solid transparent;font-weight:700;color:var(--muted)}.tabs button.on{border-color:var(--shu);color:var(--text)}.scroll{overflow-x:auto}.tbl{border-collapse:collapse;width:100%;font-size:13px}.tbl th,.tbl td{border-bottom:1px solid var(--line);padding:8px 6px;text-align:left}.tbl th{font-size:12px;color:var(--muted)}.cell{text-align:center!important}.cell.ok{color:var(--ok);font-weight:700}.cell.ng{color:var(--shu)}.qr-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}.qr{display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center}.qr img{width:160px;height:160px}.qr small{word-break:break-all;font-size:11px}.editor{display:flex;flex-direction:column;gap:12px}.qedit{border:1px solid var(--line);border-radius:6px;padding:12px;display:flex;flex-direction:column;gap:8px}.qedit legend{font-weight:700;color:var(--shu)}.choice-edit input[type=radio]{width:auto;accent-color:var(--shu)}.check{flex-direction:row;align-items:center;gap:6px}.check input{width:auto}.manual{display:flex;flex-direction:column;gap:14px;border-left:4px solid var(--shu)}.manual h3{margin:0 0 6px;font-size:15px}.manual ul{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:6px;line-height:1.6}.manual li.plain{list-style:none;margin-left:-20px}