.nmr-hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(340px,.92fr);gap:48px;align-items:center}.nmr-hero-note{margin:18px 0 0;color:var(--muted);font-size:.92rem;max-width:68ch}.nmr-evidence-demo{border:1px solid #c8d8d5;border-radius:20px;background:linear-gradient(180deg,#fff,#f3f8f6);padding:22px;box-shadow:0 16px 44px rgba(16,43,63,.09)}.nmr-demo-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:14px;color:var(--muted)}.nmr-demo-head strong{font-family:Georgia,"Times New Roman",serif;font-size:1.45rem;color:var(--navy)}.nmr-evidence-demo table,.nmr-signal-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid #cad8d5}.nmr-evidence-demo th,.nmr-evidence-demo td,.nmr-signal-table th,.nmr-signal-table td{padding:10px 12px;border-bottom:1px solid #d8e1df;text-align:left}.nmr-evidence-demo th,.nmr-signal-table th{background:#eef5f3;color:var(--navy);font-size:.86rem}.nmr-evidence-demo tr:last-child td,.nmr-signal-table tr:last-child td{border-bottom:0}.nmr-demo-route{display:flex;gap:7px;align-items:center;justify-content:center;flex-wrap:wrap;margin-top:15px;color:var(--muted);font-size:.78rem}.nmr-demo-route i{font-style:normal;color:#88a19b}.nmr-demo-route strong{color:var(--teal2)}
.nmr-board-strip{padding-top:28px}.nmr-board-choice{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:24px}.nmr-board-choice>span{font-weight:800;color:var(--navy);margin-right:6px}.nmr-board-choice a{border:1px solid #b9cdca;border-radius:999px;padding:8px 13px;text-decoration:none;color:var(--ink);background:#fff;font-weight:750}.nmr-board-choice a.active{background:var(--navy);border-color:var(--navy);color:#fff}.nmr-board-differences{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;border-top:1px solid #d5dfdd;padding-top:22px}.nmr-board-differences article{padding-right:18px}.nmr-board-differences article+article{border-left:1px solid #d5dfdd;padding-left:22px}.nmr-board-differences strong{display:block;color:var(--navy);font-family:Georgia,"Times New Roman",serif;font-size:1.2rem;margin-bottom:5px}.nmr-board-differences p{margin:0;color:var(--muted);line-height:1.55}.nmr-board-footnote{color:var(--muted);margin:18px 0 0}
.nmr-tool-list{display:grid;gap:11px}.nmr-tool-row{display:grid;grid-template-columns:auto minmax(230px,1.25fr) minmax(260px,.95fr) auto;gap:18px;align-items:center;text-decoration:none;color:var(--ink);border:1px solid #cad8d5;border-radius:15px;background:#fff;padding:17px 20px;transition:.18s transform,.18s border-color,.18s box-shadow}.nmr-tool-row:hover{transform:translateY(-2px);border-color:#94b5ae;box-shadow:var(--shadow);color:var(--ink)}.nmr-row-mark{display:grid;place-items:center;width:50px;height:45px;border-radius:12px;background:#eaf4f2;color:var(--teal2);font-weight:900;font-family:Georgia,"Times New Roman",serif}.nmr-row-copy{display:grid;gap:4px}.nmr-row-copy strong{font-family:Georgia,"Times New Roman",serif;color:var(--navy);font-size:1.2rem}.nmr-row-copy small{color:var(--muted);line-height:1.45}.nmr-row-skills{display:flex;gap:6px;flex-wrap:wrap}.nmr-row-skills em,.nmr-hero-skills span{font-style:normal;border:1px solid #cddbd8;background:#f3f7f6;border-radius:999px;padding:5px 9px;color:#4c6865;font-size:.76rem}.nmr-row-board{font-size:.78rem;font-weight:800;color:var(--teal2);white-space:nowrap}
.nmr-reference-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.nmr-reference-card{border-top:3px solid #8db4ad;padding-top:16px}.nmr-reference-card h3{margin-top:0}.nmr-reference-card dl,.nmr-reference-card ul,.nmr-reference-card ol{margin:0;padding-left:20px}.nmr-reference-card dl{padding:0}.nmr-reference-card dl div{padding:8px 0;border-bottom:1px solid #dde5e3}.nmr-reference-card dt{font-weight:850;color:var(--navy)}.nmr-reference-card dd{margin:2px 0 0;color:var(--muted)}.nmr-reference-card li{margin:8px 0;color:var(--muted)}.nmr-faq{display:grid;grid-template-columns:minmax(230px,.65fr) minmax(0,1.35fr);column-gap:42px}.nmr-faq>div{grid-row:1/4}.nmr-faq details{border-top:1px solid #cad8d5;padding:16px 0}.nmr-faq details:last-child{border-bottom:1px solid #cad8d5}.nmr-faq summary{cursor:pointer;font-weight:850;color:var(--navy)}.nmr-faq details p{color:var(--muted);margin:10px 0 0}
.nmr-breadcrumb{display:flex;align-items:center;gap:8px;font-size:.84rem;margin-bottom:14px}.nmr-breadcrumb a{color:var(--teal2)}.nmr-breadcrumb span{color:#8aa09c}.nmr-hero-skills{display:flex;gap:7px;flex-wrap:wrap;margin-top:18px}.nmr-practice-shell{max-width:1120px}.nmr-app{padding:0;overflow:hidden}.nmr-app-header{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:26px 30px 20px;border-bottom:1px solid #d3dfdc}.nmr-app-header h2{margin:0}.nmr-session-summary{display:flex;gap:9px}.nmr-session-summary span{display:grid;min-width:100px;text-align:center;border:1px solid #c8d8d5;border-radius:12px;background:#fff;padding:8px 10px}.nmr-session-summary strong{font-size:1.25rem;color:var(--navy)}.nmr-session-summary small{font-size:.69rem;color:var(--muted)}.nmr-toolbar{display:grid;grid-template-columns:minmax(240px,1fr) minmax(150px,.55fr) auto;gap:16px;align-items:end;background:#f0f6f4;padding:20px 30px;border-bottom:1px solid #d3dfdc}.nmr-toolbar label{display:grid;gap:6px;font-size:.82rem;font-weight:850;color:var(--navy)}.nmr-toolbar label small{font-weight:500;line-height:1.4;color:var(--muted)}.nmr-toolbar select{min-height:44px}.nmr-toolbar-actions{display:flex;gap:8px;justify-content:flex-end;align-items:center}.nmr-reference-panel{padding:20px 30px;border-bottom:1px solid #d3dfdc;background:#fffbe9}.nmr-reference-panel h3{margin:0 0 8px;color:var(--navy)}.nmr-reference-panel p{margin:4px 0;color:var(--muted)}.nmr-reference-panel .nmr-ref-columns{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:12px}.nmr-reference-panel table{width:100%;border-collapse:collapse;font-size:.85rem}.nmr-reference-panel th,.nmr-reference-panel td{padding:7px 9px;border-bottom:1px solid #ded8bc;text-align:left}.nmr-reference-panel th{color:var(--navy)}.nmr-question-stage{padding:28px 30px 32px}.nmr-question-meta{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}.nmr-question-meta span{border:1px solid #cedbd8;background:#eef5f3;color:#506965;border-radius:999px;padding:5px 9px;font-size:.74rem;font-weight:750}.nmr-question{border:1px solid #d4dddb;background:#f9faf8;border-radius:15px;padding:22px 24px;line-height:1.6}.nmr-question>p:first-child{margin-top:0}.nmr-question>p:last-child{margin-bottom:0}.nmr-question h3{font-size:1.05rem;margin:0 0 12px}.nmr-question .nmr-evidence-block{margin:16px 0}.nmr-question .nmr-evidence-title{display:flex;justify-content:space-between;gap:12px;align-items:baseline;margin:0 0 7px}.nmr-question .nmr-evidence-title strong{color:var(--navy)}.nmr-question .nmr-evidence-title span{font-size:.78rem;color:var(--muted)}.nmr-question .nmr-formula{font-family:Georgia,"Times New Roman",serif;font-weight:800;font-size:1.08rem;color:var(--navy)}.nmr-question .nmr-structure{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#fff;border:1px solid #d4dddb;border-radius:9px;padding:10px 12px;display:inline-block}.nmr-question .nmr-extra-evidence{border-left:3px solid #9bbdb6;padding:8px 12px;margin:12px 0;background:#fff}.nmr-question .nmr-candidates{display:grid;gap:5px;margin:10px 0 0}.nmr-question .nmr-candidates span{color:var(--muted)}
.nmr-answer{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:end;margin-top:22px}.nmr-answer label.nmr-number-answer{display:grid;gap:7px;max-width:430px;font-weight:850;color:var(--navy)}.nmr-number-entry{display:flex;border:1px solid #9eb7b2;border-radius:10px;background:#fff;overflow:hidden}.nmr-number-entry input{border:0;min-height:50px;width:100%;padding:10px 13px}.nmr-number-entry b{display:flex;align-items:center;padding:0 12px;color:var(--muted);white-space:nowrap}.nmr-options{border:0;padding:0;margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.nmr-options legend{font-weight:850;color:var(--navy);margin-bottom:8px}.nmr-options label{display:flex;gap:10px;align-items:flex-start;border:1px solid #cbd9d6;border-radius:10px;background:#fff;padding:12px;cursor:pointer}.nmr-options input{margin-top:3px}.nmr-options label:has(input:checked){border-color:#7ca9a0;background:#eef7f4}.nmr-text-answer{display:grid;gap:7px;max-width:650px;font-weight:850;color:var(--navy)}.nmr-text-answer input{min-height:50px}.nmr-help-row{display:flex;gap:24px;margin:16px 2px 0}.nmr-help-row .text-button{font-weight:800}.nmr-solution{margin-top:18px}.nmr-solution h3{margin-top:0}.nmr-solution .nmr-reasoning{display:grid;gap:8px}.nmr-solution .nmr-reasoning p{margin:0}.nmr-next-step,.nmr-progress-nudge{margin-top:22px;border:1px solid #bdd4ce;border-radius:14px;background:#edf6f3;padding:18px 20px;display:flex;justify-content:space-between;align-items:center;gap:22px}.nmr-next-step[hidden],.nmr-progress-nudge[hidden]{display:none}.nmr-next-step h3,.nmr-next-step p,.nmr-progress-nudge p{margin:0}.nmr-next-step p,.nmr-progress-nudge p{color:var(--muted)}.nmr-progress-nudge a{font-weight:850;color:var(--teal2);white-space:nowrap}.nmr-app-footer{display:flex;justify-content:space-between;gap:18px;padding:18px 30px;border-top:1px solid #d3dfdc;background:#f8faf9;color:var(--muted);font-size:.84rem}.nmr-app-footer a{font-weight:750;color:var(--teal2)}.nmr-related-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.nmr-related-grid a{display:grid;gap:3px;text-decoration:none;border-top:2px solid #aac7c1;padding:12px 4px;color:var(--ink)}.nmr-related-grid strong{color:var(--navy)}.nmr-related-grid small{color:var(--muted)}
@media(max-width:900px){.nmr-hero-grid{grid-template-columns:1fr}.nmr-evidence-demo{max-width:620px}.nmr-board-differences,.nmr-reference-grid{grid-template-columns:1fr}.nmr-board-differences article+article{border-left:0;border-top:1px solid #d5dfdd;padding-left:0;padding-top:18px}.nmr-tool-row{grid-template-columns:auto 1fr auto}.nmr-row-skills{grid-column:2/4}.nmr-faq{grid-template-columns:1fr}.nmr-faq>div{grid-row:auto}.nmr-toolbar{grid-template-columns:1fr 1fr}.nmr-toolbar-actions{grid-column:1/-1;justify-content:flex-start}.nmr-related-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.nmr-evidence-demo{padding:14px}.nmr-demo-route{justify-content:flex-start}.nmr-tool-row{grid-template-columns:auto 1fr;padding:15px}.nmr-row-board{grid-column:2}.nmr-row-skills{grid-column:1/-1}.nmr-app-header{align-items:flex-start;padding:21px 18px;flex-direction:column}.nmr-session-summary{width:100%}.nmr-session-summary span{flex:1}.nmr-toolbar{grid-template-columns:1fr;padding:18px}.nmr-toolbar-actions{grid-column:auto;display:grid;grid-template-columns:1fr 1fr}.nmr-toolbar-actions .button{width:100%}.nmr-reference-panel{padding:17px 18px}.nmr-reference-panel .nmr-ref-columns{grid-template-columns:1fr}.nmr-question-stage{padding:21px 18px 25px}.nmr-question{padding:18px 16px;overflow-x:auto}.nmr-signal-table{min-width:520px}.nmr-answer{grid-template-columns:1fr}.nmr-answer>.button{width:100%}.nmr-options{grid-template-columns:1fr}.nmr-help-row{gap:18px;flex-wrap:wrap}.nmr-next-step,.nmr-progress-nudge{align-items:flex-start;flex-direction:column}.nmr-progress-nudge a{white-space:normal}.nmr-app-footer{padding:16px 18px;flex-direction:column}.nmr-related-grid{grid-template-columns:1fr}}

/* v1.71 progressive evidence + mixed practice */
.nmr-new-label{display:inline-block;margin-left:9px;font-family:inherit;font-size:.68rem;font-weight:850;letter-spacing:.02em;color:#7b4b32;background:#fff3e9;border:1px solid #e3c7b5;border-radius:999px;padding:3px 7px;vertical-align:2px}
.nmr-paper-prompt{margin:10px 0 0;color:var(--muted);max-width:760px}.nmr-evidence-picker{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;margin-top:20px}.nmr-evidence-picker button{display:flex;justify-content:space-between;align-items:center;gap:10px;text-align:left;border:1px solid #b9ceca;border-radius:10px;background:#fff;padding:11px 12px;color:var(--navy);cursor:pointer;font-weight:800}.nmr-evidence-picker button small{color:var(--teal2);font-weight:750}.nmr-evidence-picker button:hover{border-color:#7fa9a1;background:#f2f8f6}.nmr-evidence-picker button.is-revealed{background:#edf4f2;color:#58716d;border-color:#c9d8d5;cursor:default}.nmr-evidence-picker button.is-revealed small{color:#748884}.nmr-evidence-reveals{display:grid;gap:12px;margin-top:14px}.nmr-revealed-evidence{animation:nmrReveal .16s ease-out}.nmr-revealed-evidence .nmr-evidence-block{margin:0}.nmr-ir-list{margin:0;padding-left:20px}.nmr-ir-list li{margin:6px 0}.nmr-signal-slice{min-width:330px}.nmr-checkpoint{margin-top:18px;border-left:3px solid #b58965;background:#fff8f1;padding:13px 15px}.nmr-checkpoint strong{color:var(--navy)}.nmr-checkpoint p{margin:5px 0 8px}.nmr-checkpoint-answer{border-top:1px solid #ead8c7;padding-top:9px;color:#5a5149}.nmr-options-gate{border:1px dashed #9ab9b3;border-radius:13px;background:#f8fbfa;padding:17px 18px;max-width:690px}.nmr-options-gate strong{display:block;color:var(--navy);font-family:Georgia,"Times New Roman",serif;font-size:1.08rem}.nmr-options-gate p{margin:6px 0 13px;color:var(--muted)}.nmr-answer button[type="submit"]:disabled{opacity:.45;cursor:not-allowed}.nmr-mystery-note{color:var(--muted);font-size:.85rem}.nmr-reveal-all{border-style:dashed!important}@keyframes nmrReveal{from{opacity:.35;transform:translateY(-3px)}to{opacity:1;transform:none}}
@media(max-width:760px){.nmr-evidence-picker{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:480px){.nmr-evidence-picker{grid-template-columns:1fr}.nmr-new-label{display:table;margin:5px 0 0}}