.tutorial-main{max-width:1120px;padding-bottom:48px}
.tutorial-intro{padding:28px 0 24px}
.tutorial-intro h1{font-size:1.5rem}
.tutorial-intro p{max-width:70ch;margin-top:10px;color:var(--muted);font-size:1rem}
.tutorial-chooser{display:flex;gap:8px 20px;flex-wrap:wrap;margin-bottom:8px;border-bottom:1px solid var(--line)}
.tutorial-chooser button{padding:12px 4px;border-bottom:2px solid transparent;font-size:1rem;color:var(--muted);text-align:left;min-height:48px}
.tutorial-chooser button[aria-selected="true"]{color:var(--green);font-weight:650;border-bottom-color:var(--accent)}
#tutorial-content{min-width:0}
.tutorial-section{padding:26px 0;border-bottom:1px solid var(--line)}
.tutorial-section h2{font-size:1.25rem;margin-bottom:12px}
.tutorial-section>p{max-width:72ch;font-size:1rem;line-height:1.8;color:var(--muted)}
.tutorial-section details{max-width:72ch;font-size:1rem}
.tutorial-section details p{margin-top:12px;line-height:1.8}
.tutorial-formula{font-size:1rem;line-height:1.8;white-space:pre-wrap;background:var(--white);border:1px solid var(--line);border-radius:7px}
.tutorial-circuit .circuit-sequence{color:var(--green);font-weight:600;margin:16px 0 6px}
.tutorial-circuit>p+p{margin-top:10px}
.tutorial-circuit .primary-button{margin-top:18px;font-size:1rem}
.tutorial-reading .tutorial-note{font-size:.9375rem;margin-top:7px}
.reading-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 24px;max-width:880px;margin:22px 0}
.reading-choices label{display:flex;align-items:center;gap:10px;padding:14px;background:var(--white);border:1px solid var(--line);border-radius:7px;cursor:pointer;font-size:1rem;min-height:56px}
.reading-choices label:has(input:checked){border-color:#9bacca;background:var(--soft-green)}
.reading-choices input{width:20px;height:20px;flex-shrink:0;accent-color:var(--green);margin:0}
.reading-choices label>span{display:inline;margin:0;font-weight:400;color:var(--ink)}
.reading-choices .choice-qubit{color:var(--muted);font:1rem ui-monospace,SFMono-Regular,Consolas,monospace}
.reading-choices .choice-name{flex:1;font-size:1rem}
.choice-bit{font:600 1rem ui-monospace,SFMono-Regular,Consolas,monospace;color:var(--green)}
.reading-bitline{display:flex;align-items:center;flex-wrap:wrap;gap:16px}
.reading-bitline output{font:600 1.5rem ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:.2em;color:var(--green)}
.reading-bitline p{font-size:.9375rem;color:var(--muted)}
.reading-selection{margin-top:12px;font-weight:550;color:var(--ink)!important}
.reading-metrics{display:flex;gap:32px;flex-wrap:wrap;margin:20px 0}
.reading-metrics dt{font-size:.9375rem;color:var(--muted)}
.reading-metrics dd{margin:4px 0 0;font-size:1.25rem;font-weight:600;font-variant-numeric:tabular-nums}
.reading-cost-details .reading-metrics{margin:12px 0}.reading-cost-details dd{font-size:1rem}
.reading-status{font-size:1rem!important;color:#236548!important;margin-top:20px}
.reading-status.invalid{color:var(--danger)!important}
#reading-violations{margin:8px 0 12px;padding-left:20px;font-size:1rem;color:var(--danger)}
#reading-violations:empty{display:none}
.tutorial-scope{margin-top:22px;font-size:.9375rem;color:var(--muted)}
.problem-diagram{margin:24px 0;background:var(--white);padding:24px;border:1px solid var(--line);border-radius:12px;max-width:880px}
.problem-diagram figcaption{font-size:1rem;font-weight:600;margin-bottom:20px}
.diagram-choice{display:flex;justify-content:space-between;gap:12px;align-items:center;font-size:1rem}
.diagram-qubit{font:1rem ui-monospace,SFMono-Regular,Consolas,monospace;color:var(--muted)}
.timeline-ticks{display:flex;justify-content:space-between;margin-left:200px;margin-bottom:12px;font-size:1rem;font-variant-numeric:tabular-nums;color:var(--muted)}
.timeline-row{display:grid;grid-template-columns:180px minmax(0,1fr);gap:20px;align-items:center;margin:14px 0}
.timeline-lane{display:grid;min-height:40px;background:var(--paper);border-radius:4px}
.timeline-block{display:flex;align-items:center;justify-content:center;background:var(--soft-green);border:1px solid #9bacca;border-radius:4px;color:var(--green);font-size:1rem;font-weight:600}
.assignment-diagram{width:100%;border-collapse:collapse;table-layout:fixed;font-size:1rem}
.assignment-diagram th,.assignment-diagram td{padding:16px 12px;border-bottom:1px solid var(--line);text-align:left;overflow-wrap:anywhere}
.assignment-diagram thead th{font-weight:500;color:var(--muted)}
.assignment-diagram thead th:first-child{font-size:.9375rem}
.assignment-diagram td b{display:block;font-weight:600}
.assignment-diagram td .diagram-qubit{display:block;margin-top:4px}
.resource-row{display:grid;grid-template-columns:180px minmax(0,1fr);gap:20px;align-items:center;padding:16px 0;border-top:1px solid var(--line)}
.resource-name>strong,.resource-name>span{display:block;font-size:1rem}
.resource-name>span{color:var(--muted);margin-top:4px;font-variant-numeric:tabular-nums}
.resource-options{display:flex;flex-wrap:wrap;gap:12px 20px;border-left:1px solid #9bacca;padding-left:20px}
.resource-choice{display:grid;grid-template-columns:1fr auto;gap:4px 16px;font-size:1rem;flex:1;min-width:190px}
.resource-choice>strong{font-weight:600;color:var(--green)}
.resource-choice>.diagram-qubit{grid-column:1/-1}
.diagram-caption{font-size:.9375rem;line-height:1.75;color:var(--muted);margin-top:16px}
.diagram-fallback>div{display:flex;justify-content:space-between;gap:16px;padding:10px 0}
@media(max-width:700px){.reading-choices{grid-template-columns:1fr}.tutorial-chooser{gap:4px 18px}.tutorial-chooser button{padding:12px 2px}.timeline-row{grid-template-columns:1fr;gap:8px;margin:18px 0}.timeline-ticks{margin-left:0}.timeline-lane{min-height:42px}.resource-row{grid-template-columns:1fr;gap:12px}.resource-name{display:flex;justify-content:space-between;gap:12px}.resource-name>span{margin:0}.resource-options{margin-left:4px}.resource-choice{min-width:175px}}
@media(max-width:480px){.problem-diagram{padding:16px}.assignment-diagram th,.assignment-diagram td{padding:12px 6px}.assignment-diagram thead th:first-child{width:38%}.assignment-diagram tbody th{overflow-wrap:normal;word-break:normal}.reading-metrics{gap:24px}.tutorial-chooser{gap:0 16px}.tutorial-section{padding:24px 0}}

.timeline-row.is-selected .timeline-block{background:var(--green);color:var(--white);border-color:var(--green)}
.assignment-diagram td.is-selected{background:var(--soft-green);box-shadow:inset 0 -2px var(--green)}
.resource-choice.is-selected{background:var(--soft-green)}