:root{font-family:system-ui,-apple-system,'Segoe UI',sans-serif;color:#213c38;background:#f3f6f1;font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{min-height:48px;border:1px solid #bdcec7;border-radius:10px;padding:10px 16px;background:white;color:#244c45;cursor:pointer;font-weight:650}button:hover{background:#eaf4ef}button:disabled{cursor:default;opacity:.5}button.primary{background:#17665d;color:white;border-color:#17665d}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #dd9900;outline-offset:3px}.site-header{display:flex;justify-content:space-between;gap:12px;align-items:center;max-width:1180px;margin:auto;padding:22px 24px}.brand{color:#17665d;font-size:20px;font-weight:800;text-decoration:none}.site-header span,.muted{font-size:13px;color:#5a716b}main{max-width:1120px;margin:16px auto 60px;padding:0 24px}h1{font-size:clamp(24px,4vw,38px);line-height:1.45;margin:14px 0}h2{font-size:20px}p{line-height:1.8}.eyebrow{font-size:13px;letter-spacing:.1em;color:#17665d;font-weight:750}.hero{padding:30px 0 22px;max-width:740px}.hero p{color:#526b64}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card,.panel{background:white;border:1px solid #d9e3da;border-radius:16px;padding:24px}.card{display:flex;flex-direction:column;align-items:start;gap:10px}.card h2{margin:0;line-height:1.6}.card p{flex:1}.stars{color:#986500;font-size:22px;letter-spacing:.13em}.topline{display:flex;justify-content:space-between;align-items:center;gap:12px}.game-title{font-size:clamp(22px,3vw,30px)}.field{background:#edf6f7;border:1px solid #ceded9;border-radius:16px;overflow:hidden}.field svg{display:block;width:100%;height:auto}.point-label{font-size:23px;fill:#254d44;font-weight:700}.elevation{font-size:19px;fill:#355d54}.status{margin:16px 0;padding:16px 20px;border-left:4px solid #328b76;background:#e4f1e9;border-radius:8px;line-height:1.8}.status.error{background:#fff0e7;border-color:#c15c2e;color:#893818}.controls{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin:16px 0}.point-picker{display:flex;flex-wrap:wrap;gap:10px;margin:12px 0}.point-picker button{flex:1}.point-picker button.selected{background:#fff1be;border-color:#b48817}.metrics{display:flex;gap:20px;flex-wrap:wrap;margin:12px 0;font-size:14px}.book{margin-top:22px}table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}th,td{text-align:right;padding:14px 10px;border-bottom:1px solid #dce6df}th:first-child,td:first-child{text-align:left}th{font-size:13px;color:#527068;background:#f4f7f3}.book-cards{display:none}.help{margin-top:24px;font-size:14px;color:#4e6960}.help summary{cursor:pointer;min-height:44px;padding:12px 0}.foot{margin-top:28px;display:flex;gap:14px;flex-wrap:wrap;align-items:center}.hint{padding:16px;border:1px solid #e7d7a2;background:#fff8df;border-radius:12px;margin:12px 0;line-height:1.8}.warning{color:#974319}dialog{width:min(520px,calc(100% - 28px));max-height:calc(100dvh - 32px);overflow:auto;border:0;border-radius:20px;padding:24px;color:#213c38;box-shadow:0 24px 90px #132c3944}dialog::backdrop{background:#122d36a8}dialog h2{margin-top:0}dialog .actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}dialog .actions button{flex:1}dialog input{display:block;width:100%;min-height:52px;border:1px solid #819c92;border-radius:10px;padding:12px;margin:12px 0;font-size:22px}dialog .scope{display:block;width:min(220px,100%);margin:auto}.reading{text-align:center;font-size:23px;font-weight:750}.modal-message{min-height:26px;color:#9d3e20;line-height:1.6}.clear{background:#e7f2e4;border:1px solid #a9caa8;border-radius:16px;padding:24px;margin-top:20px}.clear h2{font-size:28px;margin:0}.legend{display:flex;justify-content:space-between;padding:12px 18px;background:#fff;font-size:13px;gap:8px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
@media(max-width:700px){.site-header{padding:16px}.site-header span{display:none}main{padding:0 14px;margin-top:0}.cards{grid-template-columns:1fr}.hero{padding-top:18px}.card{padding:20px}.controls{grid-template-columns:repeat(2,minmax(0,1fr))}.controls button:last-child{grid-column:1/-1}.panel{padding:16px}.book table{display:none}.book-cards{display:grid;gap:12px}.book-card{border:1px solid #d9e3da;border-radius:10px;padding:14px}.book-card dl{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:0}.book-card dl div{min-width:0}.book-card dt{font-size:12px;color:#5c756b}.book-card dd{margin:4px 0 0;font-size:14px;font-variant-numeric:tabular-nums}.topline{align-items:flex-start}.metrics{gap:12px}.point-picker button{min-width:60px}.legend{flex-direction:column}.status{padding:12px 14px}.stars{white-space:nowrap}.field .point-label{font-size:28px}.field .elevation{font-size:25px}}
/* Shared calculator; existing game layout is unchanged. */
.mini-calculator{width:min(360px,calc(100% - 24px));padding:18px;overscroll-behavior:contain}
.mini-calculator h2{margin:0 0 10px}
.calculator-display{display:block;min-height:54px;padding:12px;background:#f3f6f1;border:1px solid #bdcec7;border-radius:10px;text-align:right;font-size:24px;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.calculator-message{font-size:12px;line-height:1.4;min-height:17px;margin:8px 0}
.calculator-keys{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.calculator-keys button{min-height:48px;padding:8px;font-size:20px}
.calculator-transfer,.calculator-close{display:block;width:100%;margin-top:10px;min-height:48px}
@media(max-width:700px){.mini-calculator{position:fixed;inset:auto 0 0;margin:0 auto;width:100%;max-width:420px;max-height:calc(100dvh - 12px);border-radius:18px 18px 0 0;padding:16px 16px max(16px,env(safe-area-inset-bottom))}}
/* Recorded notebook values remain visible alongside the shared calculator. */
.mini-calculator{width:min(760px,calc(100% - 24px))}
.mini-calculator[open]{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px}
.calculator-panel,.calculator-notebook{min-width:0}
.calculator-records{max-height:430px;overflow-y:auto;overscroll-behavior:contain;padding:3px}
.calculator-record{border:1px solid #d9e3da;border-radius:10px;padding:12px;margin-bottom:10px;background:#f8faf7}
.calculator-record.current-record{border-color:#73a797;background:#eef6f1}
.calculator-record dl{margin:6px 0 0;display:grid;gap:4px}
.calculator-record dl div{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap}
.calculator-record dt{font-size:13px;color:#527068}
.calculator-record dd{margin:0;font-size:14px;font-variant-numeric:tabular-nums}
@media(max-width:700px){.mini-calculator{width:100%;max-width:420px}.mini-calculator[open]{grid-template-columns:minmax(0,1fr);gap:10px}.calculator-notebook h2{font-size:16px;margin-bottom:6px}.calculator-records{max-height:150px}.calculator-record{padding:8px 10px;margin-bottom:6px}.calculator-panel h2{font-size:16px}.calculator-message{margin:4px 0;min-height:17px}.calculator-display{min-height:48px;padding:8px}.calculator-keys{gap:6px}.calculator-transfer,.calculator-close{margin-top:6px}}
/* Phase2: same visual theme, setup labels and accessible TP controls. */
.row-setup{display:block;font-size:11px;font-weight:400;color:#527068}
.setup-status{font-size:14px;color:#47635d;line-height:1.7}
@media(max-width:700px){.controls:has(#relocate) button:last-child{grid-column:auto}}
/* Phase3 verification cards: touchable calculation cells, no wide table. */
.review-task{margin:18px 0}.review-task input{display:block;width:100%;max-width:400px;min-height:52px;margin:12px 0;border:1px solid #819c92;border-radius:10px;padding:12px;font:inherit;font-size:22px}
.review-task .actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}.review-task .actions button{flex:1;min-width:110px}
.review-summaries{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:16px;margin:18px 0}.review-summary dl{margin:0}.review-summary dl div{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:8px 0}.review-summary dd{margin:0;font-variant-numeric:tabular-nums}
.review-records{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.review-record{border:1px solid #d9e3da;border-radius:10px;padding:16px}.review-record h3{margin:0 0 12px;font-size:17px}.review-record small{font-weight:400;color:#527068}.review-record dl{margin:0;display:grid;gap:8px}.review-record dl div{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}.review-record dt{font-size:13px;color:#527068}.review-record dd{margin:0;font-variant-numeric:tabular-nums}.review-record button{min-width:100px;border-color:#73a797;background:#eef6f1}
@media(max-width:700px){.review-records{grid-template-columns:minmax(0,1fr)}.review-record{padding:14px}.review-task h2{font-size:18px}.review-summaries{grid-template-columns:minmax(0,1fr)}}
/* Advanced calculator reference panes. Both endpoint elevations stay together. */
.calculator-endpoint{margin:0 0 8px}.calculator-reference-tabs{display:flex;gap:6px;margin-bottom:6px}.calculator-reference-tabs button{flex:1;min-width:0;padding:6px;min-height:48px;font-size:14px}.calculator-reference-tabs [aria-selected=true]{background:#e4f1e9;border-color:#328b76}.with-reference .calculator-records{max-height:300px}.calculator-reference-value{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap;padding:10px 4px;border-bottom:1px solid #d9e3da;font-size:14px}.calculator-reference-value strong{font-weight:600;font-variant-numeric:tabular-nums}.with-reference [hidden]{display:none}#completed-reference{margin:0 10px 10px 0}
@media(max-width:700px){.with-reference .calculator-records{max-height:76px}.with-reference .calculator-endpoint{padding:6px 8px;margin-bottom:6px}.with-reference .calculator-endpoint dl{gap:2px;margin-top:3px}.with-reference .calculator-notebook h2{margin-bottom:4px}.with-reference .calculator-reference-tabs button{min-height:44px}.with-reference .calculator-reference-value{padding:7px 4px}}