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@media(max-width:800px){.workspace,.explorer-layout{grid-template-columns:minmax(0,1fr)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

/* 教學專欄：文章與互動範例共用既有視覺語言。 */
.home-lessons{padding:20px 0 38px}.lesson-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-bottom:28px}.lesson-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius);padding:26px;background:var(--surface);transition:border-color .2s,box-shadow .2s}.lesson-card:hover{border-color:var(--accent);box-shadow:var(--shadow)}.lesson-meta{font-size:14px;color:var(--muted)}.lesson-card h3{font:600 23px/1.55 var(--serif);margin:17px 0 12px}.lesson-card p{font-size:16px;color:var(--muted);flex:1}.lesson-card .text-button{font-size:14px}.learning-intro{display:flex;gap:24px;align-items:center;justify-content:space-between;margin:8px 0 24px;border-left:4px solid var(--accent)}.learning-intro h2{font-size:24px;margin-bottom:12px}.learning-intro p{margin:0;color:var(--muted)}.learning-intro .button{flex-shrink:0}.lesson-filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}.lesson-filters button{background:var(--surface);border:1px solid var(--line);border-radius:30px;padding:8px 20px;font-size:16px}.lesson-filters button.active{background:var(--ink);color:white;border-color:var(--ink)}.lesson-count,.lesson-footnote{font-size:14px;color:var(--muted)}.lesson-footnote{margin:22px 0 48px}.lesson-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:30px;align-items:start;margin:12px 0 50px}.lesson-toc{position:sticky;top:118px;padding:22px}.lesson-toc h2{font-size:20px}.lesson-toc nav{display:grid;gap:8px;margin-bottom:24px}.lesson-toc button{font-size:14px;background:none;text-align:left;padding:8px 0;color:var(--muted);line-height:1.7}.lesson-toc button:hover{color:var(--accent)}.lesson-article{min-width:0}.lesson-section{margin-bottom:20px;scroll-margin-top:115px}.lesson-section p,.lesson-section li{font-size:16px;line-height:1.95}.lesson-section p:last-child{margin-bottom:0}.lesson-section h2{font-size:25px}.lesson-section h3{margin-top:24px}.lesson-section ul{padding-left:23px}.lesson-section li{margin:8px 0}.lesson-tools{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:15px}.lesson-sources a{color:var(--accent);text-decoration:underline}.lesson-section .help{font-size:14px;color:var(--muted)}.lesson-pagination{display:grid;grid-template-columns:1fr 1fr;gap:18px}.lesson-pagination a{background:var(--green-soft);padding:20px;border-radius:8px;line-height:1.8;font-size:16px}.lesson-pagination small{display:block;font-size:14px;color:var(--muted)}.lesson-pagination a:last-child{text-align:right}.lab-moves{border:0;padding:0;display:flex;gap:12px;flex-wrap:wrap;margin:12px 0}.lab-moves legend{font-size:14px;margin-bottom:10px;color:var(--muted)}.lab-moves label{font-size:14px;display:flex;align-items:center;gap:4px;min-height:40px}.lab-actions{display:flex;gap:20px;flex-wrap:wrap;margin:12px 0 20px}.lab-actions button{font-size:14px}.lab-diagrams{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}.lab-hex{min-width:0;text-align:center;background:var(--green-soft);border-radius:8px;padding:16px 5px}.lab-hex>span{font-size:14px;color:var(--muted)}.lab-hex .hex-drawing{width:48px;gap:5px;margin:18px auto}.lab-hex .yao{height:5px;gap:6px}.lab-hex .move-dot{left:calc(100% + 2px);top:-8px;font-size:14px}.lab-hex h3{font:18px/1.5 var(--serif);margin:12px 0}.lab-hex p{font-size:13px;margin:0}.lab-hex small{font-size:14px;color:var(--muted)}.lab-summary{padding:18px 0;font-size:16px;line-height:1.9}.lab-detail{font-size:14px}.lesson-quiz fieldset{border:0;padding:0;margin:0 0 18px;min-width:0}.lesson-quiz legend{font-size:17px;margin-bottom:18px}.quiz-option{display:flex;gap:12px;align-items:flex-start;padding:13px;margin-bottom:10px;background:var(--paper);border:1px solid var(--line);border-radius:7px;cursor:pointer;font-size:16px}.quiz-option input{flex-shrink:0;margin-top:5px}.quiz-feedback:empty{display:none}.quiz-feedback{padding:15px;margin:18px 0 0;border-radius:7px}.quiz-feedback.correct{background:var(--green-soft)}.quiz-feedback.retry{background:var(--accent-soft)}
@media(max-width:1050px){.nav-wrap{gap:20px}.nav-wrap nav{gap:20px}.nav-cta{display:none}.lesson-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-layout{grid-template-columns:190px minmax(0,1fr);gap:20px}.lab-diagrams{grid-template-columns:repeat(3,minmax(0,1fr))}.learning-intro{align-items:flex-start;flex-direction:column}}
@media(max-width:800px){.lesson-layout{grid-template-columns:minmax(0,1fr)}.lesson-toc{position:static}.lesson-toc nav{grid-template-columns:1fr 1fr;gap:4px 16px;margin-bottom:14px}.lab-diagrams{grid-template-columns:repeat(5,minmax(0,1fr))}}
@media(max-width:560px){.lesson-grid{grid-template-columns:minmax(0,1fr);gap:14px}.lesson-card{padding:22px}.lesson-card h3{font-size:23px}.lesson-toc nav{grid-template-columns:1fr}.lesson-section h2{font-size:23px}.lesson-pagination{grid-template-columns:1fr}.lab-diagrams{grid-template-columns:repeat(2,minmax(0,1fr))}.lab-hex:last-child{grid-column:1/-1}.lab-hex .hex-drawing{width:64px}.lab-hex h3{font-size:20px}.nav-wrap nav{gap:12px;overflow-x:auto;justify-content:flex-start}.nav-wrap nav a{font-size:14px}.learning-intro h2{font-size:23px}.home-lessons .section-title{gap:12px;align-items:flex-start;flex-wrap:wrap}}

/* 五卦先呈現完整六爻圖，再解釋八卦正位與動爻關係。 */
.result-gallery{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:14px}.result-gallery>.hex-card{grid-column:span 2;min-width:0;cursor:pointer}.result-gallery>.hex-card:nth-child(-n+2){grid-column:span 3}.result-gallery>.hex-card:hover,.result-gallery>.hex-card:focus-visible{border-color:var(--accent);box-shadow:var(--shadow)}.result-gallery .hex-drawing{width:100px;gap:9px;margin:22px auto 18px}.result-gallery .yao{height:8px;gap:12px}.result-gallery .hex-name{font-size:25px}.result-gallery .position-marks{margin-top:15px}.result-legend{margin:15px 0 3px}.position-marks{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:6px}.position-badge{display:inline-flex;align-items:center;padding:3px 8px;border-radius:5px;background:var(--green-soft);font-size:13px;color:var(--ink);line-height:1.5}.position-badge.trigram-proper{background:#e7eddf;color:#3c6846}.position-badge.line-proper{background:#e7eddf;color:#3c6846}.position-badge.line-missed{background:#f2ebe1;color:#825a3f}.position-badge.responding{background:#e1edf1;color:#315d72}.position-badge.not-responding{background:#ecece7;color:#626965}.position-none{font-size:12px;color:var(--muted)}.moving-status{display:grid;gap:5px;margin-top:13px;font-size:13px;line-height:1.9;color:var(--text)}.moving-status>span{overflow-wrap:anywhere}.moving-status small{color:var(--muted);font-size:12px}.moving-status .position-badge{font-size:12px;padding:2px 5px}.detail-hex-graphic{margin:18px 0 22px}.detail-hex-graphic .hex-drawing{width:142px;gap:11px;margin:auto}.detail-hex-graphic .yao{height:10px;gap:17px}.detail-hex-graphic .move-dot{font-size:17px}.result-detail .position-marks{justify-content:flex-start;margin:12px 0}.result-detail .moving-status{background:var(--paper);padding:14px;border-radius:7px;margin:12px 0 20px}.line-annotations{display:flex;gap:5px;flex-wrap:wrap;align-items:center;margin-top:7px}.line-annotations small{font:13px var(--sans);color:var(--muted)}.line-annotations .position-badge{font:12px var(--sans)}
@media(max-width:800px){.result-gallery{grid-template-columns:repeat(2,minmax(0,1fr))}.result-gallery>.hex-card,.result-gallery>.hex-card:nth-child(-n+2){grid-column:span 1}.result-gallery>.hex-card:last-child{grid-column:span 2}}
@media(max-width:560px){.result-gallery{gap:9px}.result-gallery>.hex-card{padding:17px 9px}.result-gallery .hex-drawing{width:76px;gap:6px}.result-gallery .yao{height:6px;gap:9px}.result-gallery .hex-name{font-size:21px}.result-gallery .position-badge{font-size:12px;padding:2px 5px}.result-gallery .moving-status{font-size:12px}.result-gallery .card-label{font-size:12px;letter-spacing:.05em}.result-gallery>.hex-card:last-child{grid-column:span 2}.result-gallery>.hex-card:last-child .hex-drawing{width:95px}}

.catalogue-position,.lab-position{display:flex;flex-wrap:wrap;gap:5px;margin-top:9px}.catalogue-position:empty,.lab-position:empty{display:none}.catalogue-position span,.lab-position span{font-size:12px;line-height:1.5;padding:2px 6px;background:var(--green-soft);color:#41634e;border-radius:4px}.lab-position{justify-content:center;margin-top:10px}.lab-position span{text-align:center}.catalogue-position span{overflow-wrap:anywhere}

/* 將爻位、應位、八卦正位及五行生剋貼近各自的卦圖。 */
.result-gallery{grid-template-columns:repeat(2,minmax(0,1fr))}.result-gallery>.hex-card,.result-gallery>.hex-card:nth-child(-n+2){grid-column:span 1}.result-gallery>.hex-card:last-child{grid-column:span 2}.annotated-hex{display:grid;grid-template-columns:minmax(157px,1.35fr) minmax(114px,1fr);gap:10px;max-width:530px;margin:20px auto 8px;text-align:left;align-items:stretch}.visual-lines{display:grid;grid-template-rows:repeat(6,minmax(27px,1fr));gap:3px;min-width:0}.visual-line{display:grid;grid-template-columns:22px 74px minmax(0,1fr);align-items:center;gap:3px;min-width:0}.visual-line:nth-child(3){margin-bottom:8px}.visual-line.is-moving{background:#e8efe4;border-radius:4px}.visual-line-name{font-size:11px;color:var(--muted)}.visual-yao{display:block;position:relative;width:74px}.visual-yao .yao{width:74px;height:7px;gap:10px}.visual-move-dot{position:absolute;right:0;top:-15px;color:var(--accent);font-size:12px;line-height:1}.visual-line-status{display:flex;gap:3px;flex-wrap:wrap;align-content:center;font-size:10px;line-height:1.3}.visual-line-status span{white-space:nowrap;border-radius:3px;padding:1px 3px}.visual-line-status .good{color:#376745;background:#e2ecdc}.visual-line-status .responding{color:#315d72;background:#e1edf1}.visual-line-status .muted{color:#676e68;background:#eeeee9}.visual-context{display:grid;grid-template-rows:1fr auto 1fr;gap:5px;min-width:0}.visual-trigram{display:flex;flex-wrap:wrap;align-content:center;align-items:center;gap:3px 5px;padding:7px;border:1px solid #dfe4d8;border-radius:6px;background:#f7f8f2;min-width:0}.visual-trigram strong{font-size:13px;white-space:nowrap}.visual-trigram .element{font-size:11px}.visual-trigram small{display:block;width:100%;font-size:11px;color:var(--muted)}.visual-proper{display:block;width:100%;font-size:11px;font-weight:600}.visual-proper.yes{color:#376745}.visual-proper.no{color:#77766f}.visual-relation{text-align:center;font-size:11px;line-height:1.35;color:var(--accent);padding:2px 3px}.visual-relation.剋{color:#915944}.detail-hex-graphic .annotated-hex{max-width:540px;margin:16px 0 24px}.result-gallery .hex-card .hex-name{margin-top:12px}.result-gallery .hex-card .hex-number{display:block}.result-gallery .hex-card{display:flex;flex-direction:column}.result-gallery .hex-card .annotated-hex{width:100%;flex:1}.result-gallery .hex-card .hex-name{margin-bottom:3px}
@media(max-width:800px){.result-gallery{grid-template-columns:minmax(0,1fr)}.result-gallery>.hex-card,.result-gallery>.hex-card:nth-child(-n+2),.result-gallery>.hex-card:last-child{grid-column:span 1}.annotated-hex{max-width:470px}}
@media(max-width:560px){.result-gallery .hex-card{padding:17px 12px}.annotated-hex{grid-template-columns:minmax(157px,1.3fr) minmax(114px,1fr);gap:6px}.visual-trigram{padding:5px}.visual-trigram strong{font-size:12px}.visual-relation{font-size:10px}.detail-hex-graphic .annotated-hex{margin:14px auto 22px}}