.instruction-page { padding-bottom: 64px; }
.instruction-breadcrumb { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; padding-top: 28px; color: var(--muted); font-size: .875rem; }
.instruction-breadcrumb a { text-decoration: underline; text-underline-offset: 4px; }
.instruction-hero { padding: 44px 0 48px; }
.instruction-intro { display: grid; grid-template-columns: minmax(0,1.2fr) minmax(0,.8fr); column-gap: 64px; align-items: start; }
.instruction-intro > .eyebrow { grid-column: 1/-1; }
.instruction-intro h1 { grid-row: span 2; font-size: clamp(2.375rem,4.4vw,3.5rem); line-height: 1.12; letter-spacing: -1.2px; max-width: 24ch; }
.instruction-lead { font-size: 1.0625rem; line-height: 1.8; max-width: 58ch; }
.instruction-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 20px 26px; margin-top: 30px; }
.instruction-page .eyebrow { font-size: .875rem; line-height: 1.5; letter-spacing: .07em; }
.instruction-page .text-link { font-size: .9375rem; }
.instruction-page .button { font-size: .9375rem; border-radius: 6px; }
.concept-explorer { margin-bottom: 56px; border: 1px solid #bdcacc; border-radius: 14px; background: #fffefa; overflow: hidden; }
.concept-explorer [hidden] { display: none !important; }
.map-heading { padding: 28px 32px; display: flex; justify-content: space-between; align-items: center; gap: 24px; background: var(--navy); }
.map-heading .eyebrow { color: #c9dadd; margin-bottom: 8px; font-size: .8125rem; }
.map-heading h2 { color: #fffefa; font-size: clamp(1.875rem,3vw,2.375rem); line-height: 1.2; letter-spacing: -.5px; }
.map-heading > p { color: #e0e8e9; font-size: 1rem; line-height: 1.65; max-width: 43ch; }
#map-fallback { padding: 28px 32px; }
.map-workspace { display: grid; grid-template-columns: minmax(280px,.8fr) minmax(0,2fr); }
.map-inputs { padding: 28px; background: #f0f3f2; border-right: 1px solid #cfd9da; min-width: 0; }
.map-inputs label { display: block; color: var(--ink); font-size: .9375rem; line-height: 1.5; font-weight: 650; margin-bottom: 9px; }
.map-inputs select { display: block; width: 100%; max-width: 100%; min-height: 48px; padding: 10px 8px; font: 400 1rem/1.5 var(--sans); border: 1px solid #94a8af; border-radius: 6px; background: #fffefa; color: var(--ink); cursor: pointer; }
.map-inputs .map-problem { font-size: .9375rem; line-height: 1.7; margin: 14px 0 26px; }
.map-suggestion { margin-top: 28px; padding-top: 22px; border-top: 1px solid #c4d0d2; }
.map-kicker { font-size: .8125rem; font-weight: 650; letter-spacing: .065em; line-height: 1.5; color: #5f4837; margin-bottom: 8px; }
.map-suggestion h3 { font: 650 1.1875rem/1.4 var(--sans); margin-bottom: 10px; letter-spacing: -.2px; }
.map-suggestion > p:last-child { font-size: .9375rem; line-height: 1.7; }
.map-canvas { padding: 28px; min-width: 0; }
.map-canvas-heading h3 { font: 650 1.125rem/1.5 var(--sans); }
.map-canvas-heading p { font-size: .9375rem; line-height: 1.6; margin-top: 4px; }
.map-viewport { overflow-x: auto; padding: 8px; margin: 12px -8px 0; scrollbar-width: thin; scrollbar-color: #8c9fa5 #edf1f1; border-radius: 8px; }
.map-network { position: relative; display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 28px 38px; min-width: 550px; padding: 5px 24px 5px 5px; }
#map-edges { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; }
.map-edge { stroke: #c8d3d5; stroke-width: 1.25; }
.map-edge.is-related { stroke: #527481; stroke-width: 2; }
.map-edge.is-selected { stroke: #855634; stroke-width: 2.5; }
.map-node { position: relative; z-index: 1; min-width: 0; min-height: 76px; padding: 12px 10px; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px; border: 1px solid #b8c8cc; border-radius: 9px; background: #f5f7f6; color: #4b626c; font-family: var(--sans); cursor: pointer; text-align: center; }
.map-node-name { font-size: .9375rem; line-height: 1.4; font-weight: 600; }
.map-node-tag { font-size: .8125rem; line-height: 1.4; font-weight: 500; }
.map-node-tag:empty { display: none; }
.map-node.is-related { color: var(--navy); background: #e8eff0; border-color: #6e8c97; }
.map-node.is-target { background: var(--navy); color: #fffefa; border-color: var(--navy); }
.map-node.is-suggested:not(.is-target) { background: #f6eadc; color: #493525; border-color: #9a724f; }
.map-node[aria-pressed="true"] { outline: 2px solid #855634; outline-offset: 3px; }
.map-node:hover { box-shadow: 0 2px 8px #102e3a22; }
.concept-explorer :is(button,select,summary,a,.map-viewport):focus-visible { outline: 3px solid #276680; outline-offset: 5px; }
.map-key { font-size: .875rem; line-height: 1.6; margin-top: 16px; max-width: 64ch; }
.map-scroll-hint { font-size: .875rem; margin-top: 12px; }
.map-learning { padding: 28px 32px 32px; border-top: 1px solid #cbd6d8; }
.map-lesson-intro { display: grid; grid-template-columns: minmax(0,.9fr) minmax(0,1.1fr); gap: 24px 40px; align-items: center; margin-bottom: 24px; }
.map-lesson-intro h3 { font: 400 1.875rem/1.25 var(--serif); letter-spacing: -.4px; color: var(--navy); }
.map-prerequisites { font-size: .875rem; line-height: 1.6; margin-top: 8px; }
#map-explanation { font-size: 1rem; line-height: 1.75; }
.map-exercises { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; }
.map-exercises h4 { font: 650 1rem/1.5 var(--sans); margin-bottom: 14px; color: var(--navy); }
.map-worked,.map-practice { min-width: 0; padding: 22px 24px; border-radius: 8px; }
.map-worked { background: #eaf0f1; }
.map-worked pre { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.map-worked code { font: 400 .9375rem/1.8 ui-monospace,SFMono-Regular,Consolas,monospace; color: #183b49; }
.map-practice { background: #f4f1ea; }
.map-practice p { font-size: 1rem; line-height: 1.75; }
.map-practice details { border: 0; border-top: 1px solid #c9cfcb; border-radius: 0; margin-top: 18px; padding: 0; background: transparent; }
.map-practice summary { min-height: 44px; padding: 12px 0; font-size: .9375rem; line-height: 1.5; font-weight: 650; color: var(--navy); cursor: pointer; }
.map-practice #map-solution { padding: 2px 0 0; font-size: .9375rem; }
.map-context { background: #f0f3f2; border-top: 1px solid #cbd6d8; padding: 18px 32px; font-size: .875rem; line-height: 1.7; }
.map-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.instruction-method { border-top: 1px solid var(--line); padding: 60px 0; scroll-margin-top: 110px; }
.instruction-method-heading { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,.9fr); gap: 36px 72px; align-items: end; margin-bottom: 36px; }
.instruction-method h2,.instruction-close h2 { font-size: clamp(2rem,3.3vw,2.75rem); letter-spacing: -.7px; line-height: 1.18; }
.instruction-method-heading > p { max-width: 51ch; font-size: 1rem; line-height: 1.8; }
.instruction-steps { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 28px; list-style: none; padding: 0; margin: 0; }
.instruction-steps li { border-top: 2px solid var(--navy); padding-top: 20px; }
.instruction-step-number { display: block; font: 650 1rem/1.5 var(--sans); font-variant-numeric: lining-nums tabular-nums; color: var(--rust); margin-bottom: 14px; }
.instruction-steps h3 { font: 650 1.0625rem/1.5 var(--sans); letter-spacing: -.2px; margin-bottom: 12px; }
.instruction-steps p { font-size: 1rem; line-height: 1.75; }
.instruction-judgment { margin-top: 36px; padding: 24px 28px; border-radius: 10px; background: #eeece5; }
.instruction-judgment h3 { font: 650 1.0625rem/1.5 var(--sans); margin-bottom: 8px; }
.instruction-judgment p { max-width: 85ch; font-size: 1rem; line-height: 1.75; }
.instruction-close { display: grid; grid-template-columns: minmax(0,1.2fr) minmax(0,.8fr); gap: 56px; padding: 40px; background: var(--blue); border-radius: 14px; }
.instruction-close > div > p:not(.eyebrow) { margin-top: 22px; font-size: 1rem; line-height: 1.8; }
.instruction-booking { align-self: center; }
.instruction-booking h3 { font: 650 1.25rem/1.4 var(--sans); }
.instruction-close .instruction-booking p { margin-top: 14px; }
.instruction-booking .button { margin-top: 24px; max-width: 100%; }
.instruction-booking .text-link { display: block; width: fit-content; margin-top: 18px; }
@media (max-width: 1100px) {
 .instruction-intro { column-gap: 32px; }
 .map-workspace { grid-template-columns: minmax(280px,.8fr) minmax(0,2fr); }
 .map-inputs,.map-canvas { padding: 24px; }
 .instruction-steps { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 32px; }
 .instruction-close { gap: 32px; padding: 32px; }
}
@media (max-width: 1000px) {
 .instruction-hero { padding: 36px 0; }
 .instruction-intro { display: block; max-width: 700px; }
 .instruction-intro h1 { max-width: 24ch; }
 .instruction-lead { margin-top: 22px; }
 .map-heading { align-items: flex-start; flex-direction: column; gap: 16px; }
 .map-heading > p { max-width: 62ch; }
 .map-workspace { grid-template-columns: 1fr; }
 .map-inputs { border-right: 0; border-bottom: 1px solid #cfd9da; }
 .map-suggestion { margin-top: 22px; }
 .map-network { gap: 28px 44px; }
 .map-lesson-intro { grid-template-columns: 1fr; gap: 16px; }
 .instruction-method-heading,.instruction-close { grid-template-columns: 1fr; gap: 26px; }
 .instruction-method { padding: 44px 0; }
 .instruction-method-heading > p { max-width: 65ch; }
}
@media (max-width: 560px) {
 .instruction-page { padding-bottom: 36px; }
 .instruction-steps { grid-template-columns: 1fr; gap: 26px; }
 .instruction-step-number { margin-bottom: 10px; }
 .instruction-steps h3 { margin-bottom: 8px; }
 .instruction-close { padding: 24px 20px; }
 .map-heading,.map-learning { padding: 24px 20px; }
 .map-inputs,.map-canvas { padding: 22px 20px; }
 .map-exercises { grid-template-columns: 1fr; gap: 16px; }
 .map-worked,.map-practice { padding: 20px; }
 .map-context { padding: 18px 20px; }
 .instruction-judgment { padding: 22px 20px; }
 .instruction-actions { align-items: flex-start; flex-direction: column; gap: 18px; }
 .instruction-lead { font-size: 1rem; }
}