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print{.topbar,.sequence-hero,.sequence-route,.learning-map,.detective-method,.sequence-lab-section,.shape-lab,.lesson-journey,.review-section,.sequence-bottom,.footer,.print-button{display:none!important}.sequence-main{width:100%;max-width:none;margin:0}.formula-reference{margin:0;padding:0;border:0;box-shadow:none}.formula-heading h2{font-size:20pt}.formula-grid{grid-template-columns:repeat(2,1fr)}.formula-grid article{break-inside:avoid;background:white}.formula-grid code{font-size:12pt}}

/* Formula hierarchy: keep equations visually separate from explanatory prose. */
.sequences-page .sequence-rich-math{display:block;width:fit-content;max-width:100%;margin:.4em 0;padding:.32em .65em;border-left:4px solid #739b69;border-radius:0 9px 9px 0;background:#eef5e8;color:#2f5338;font-size:clamp(1.05rem,2vw,1.24rem);font-weight:900;line-height:1.8;overflow-wrap:anywhere;font-variant-numeric:lining-nums tabular-nums}
.sequences-page .sequence-rich-prose{display:inline}
.sequences-page .sequence-formula-card{display:grid;gap:5px;margin:9px 0 0;padding:11px 12px;border:1px solid #dfe9d9;border-radius:11px;background:#f5f9f1}
.sequences-page .sequence-formula-card>span{color:#64816a;font-size:9px;font-weight:900}
.sequences-page .sequence-formula-card>strong{margin:0;font-size:clamp(1.18rem,2.3vw,1.42rem)}
.sequences-page .sequence-formula-card>small{color:#68786c;font-size:10px;line-height:1.7}
.sequences-page .shape-count{flex-wrap:wrap}
.sequences-page #shape-formula{flex:1 1 100%;margin-top:5px}
.sequences-page #shape-formula .sequence-rich-math{margin:0;font-size:1.15rem}
.sequences-page .formula-chip code,.sequences-page .formula-grid code{font-size:clamp(1rem,1.8vw,1.16rem);line-height:1.8;overflow-wrap:anywhere}
.sequences-page .lab-reason .sequence-rich-math{font-size:1.05rem}
@media(max-width:650px){.sequences-page .sequence-rich-math{font-size:1.05rem;line-height:1.85;padding:.3em .52em}.sequences-page .sequence-formula-card>strong{font-size:1.18rem}.sequences-page .shape-count{align-items:flex-start}.sequences-page #shape-formula .sequence-rich-math{font-size:1.08rem}}

/* Method-selection and boundary examples added to the sequence learning chain. */
.method-choice-section,.sequence-source-note{margin:0 0 45px;scroll-margin-top:85px}
.method-choice-section{padding:23px;border:1px solid #e3e9df;border-radius:20px;background:linear-gradient(125deg,#f1f6ed,#fffefa 70%)}
.method-choice-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}
.method-choice-card{min-width:0;padding:13px;border:1px solid #e4eae0;border-radius:12px;background:#fffefa}
.method-step{display:inline-flex;padding:4px 7px;border-radius:999px;background:#edf3e9;color:#588063;font-size:8px;font-weight:900}
.method-choice-card h3,.finite-terms-example h3{margin:8px 0 6px;color:#35483a;font-size:12px;line-height:1.55}
.method-choice-card p,.finite-terms-example>div>p{margin:0;color:#5f6e63;font-size:10px;line-height:1.85}
.method-choice-card code,.finite-terms-example code,.boundary-note code,.difference-recovery code,.cycle-phase-demo code{color:#355b41;font-family:inherit;font-size:1em;font-weight:900;overflow-wrap:anywhere}
.method-choice-card small{display:block;margin-top:7px;color:#7b877e;font-size:9px;line-height:1.65}
.finite-terms-example{display:grid;grid-template-columns:.9fr 1.1fr;gap:10px 15px;margin-top:12px;padding:14px;border:1px solid #eadfc8;border-radius:13px;background:#fff9ec}
.finite-terms-example .course-kicker{color:#9a7a43;font-size:8px}
.finite-terms-example h3{margin-top:5px}
.finite-rule-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px}
.finite-rule-grid>div{display:flex;flex-direction:column;gap:6px;padding:10px;border:1px solid #eee4d1;border-radius:10px;background:#fffefa}
.finite-rule-grid b{color:#6d5a35;font-size:9px;line-height:1.55}
.finite-rule-grid span{color:#5e665b;font-size:10px;line-height:1.6}
.finite-rule-grid strong{color:#31704a}
.finite-terms-takeaway{grid-column:1/-1;margin:0;color:#786a51;font-size:9px;line-height:1.75}
.boundary-note,.difference-recovery,.cycle-phase-demo{margin:11px 0;padding:12px 14px;border:1px solid #e5eadf;border-radius:11px;background:#f7f9f3}
.boundary-note>b,.difference-recovery>b,.cycle-phase-demo>b{display:block;margin-bottom:5px;color:#466e4e;font-size:10px}
.boundary-note p,.difference-recovery p,.cycle-phase-demo p{margin:4px 0;color:#5e6c61;font-size:10px;line-height:1.8}
.difference-recovery{border-color:#e3e9dc;background:#f4f8f0}
.difference-recovery small,.cycle-phase-demo small{display:block;margin-top:6px;color:#78857b;font-size:9px;line-height:1.65}
.recovery-steps{display:flex;align-items:center;justify-content:flex-start;flex-wrap:wrap;gap:6px;margin:9px 0}
.recovery-steps span{display:grid;min-width:31px;height:31px;place-items:center;padding:0 5px;border-radius:9px;background:#fff;color:#3c6548;font-size:10px;font-weight:900}
.recovery-steps i{color:#6c9273;font-size:9px;font-style:normal;font-weight:900}
.cycle-phase-demo{border-color:#e6e8da;background:#faf9f1}
.cycle-phase-demo strong{color:#4d7152}
.sequence-source-note{margin-top:-25px;color:#849087;font-size:9px;line-height:1.7}
@media(max-width:700px){
  .method-choice-section{padding:17px}
  .method-choice-grid{grid-template-columns:1fr}
  .finite-terms-example{grid-template-columns:1fr}
  .finite-rule-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:380px){
  .method-choice-section{padding:13px}
  .finite-rule-grid{grid-template-columns:1fr}
  .recovery-steps{gap:4px}
  .recovery-steps span{min-width:27px;padding:0 3px}
}