/* Approved educational design. Preserve the existing wide article layout. */
.op-lesson { margin: 36px 0; border:1px solid #c5d8ce; border-radius:20px; background:#fff; overflow:hidden; }
.op-lesson-header { padding:28px 30px 24px; background:#edf4ed; border-bottom:1px solid #d2e0d5; }
.op-lesson .op-lesson-header h2 { border:0; padding:0; margin:0 0 14px; font-size:clamp(1.6rem,2.5vw,2rem); line-height:1.2; }
.op-lesson-header p { margin:0 0 14px; }
.op-status { color:#425b4b; font-size:.74rem; }
.op-lesson-grid { display:grid; grid-template-columns:minmax(0,1.2fr) minmax(0,1fr); gap:28px; padding:30px; align-items:start; }
.op-lesson .op-timeline { list-style:none; padding:0; margin:0; }
.op-lesson .op-timeline li { display:flex; gap:14px; margin:0; padding:0 0 25px; position:relative; }
.op-timeline li:not(:last-child)::before { content:''; position:absolute; top:34px; left:16px; width:1px; height:calc(100% - 34px); background:#c5d8ce; }
.op-step-number { flex:0 0 34px; height:34px; display:grid; place-items:center; background:#0e7064; color:white; border-radius:50%; font-size:.8rem; font-weight:750; }
.op-lesson .op-timeline h3 { margin:3px 0 7px; font-size:1rem; line-height:1.35; }
.op-lesson .op-timeline p { margin:0; color:#506458; font-size:.9rem; line-height:1.6; }
.op-message { padding:22px; border:1px solid #e6dbbf; border-radius:15px; background:#fcf7e9; }
.op-lesson .op-message blockquote { margin:16px 0; padding:18px; border:1px solid #e2d6b8; border-radius:14px 14px 14px 3px; background:#fff; font-size:.94rem; line-height:1.65; }
.op-small { font-size:.76rem; color:#665a41; line-height:1.6; }
.op-message-stop { border-top:1px solid #e6dbbf; padding-top:16px; margin-bottom:0!important; font-size:.85rem; }
.op-checklist { margin:0 30px 22px; border-top:1px solid #dce4df; padding-top:18px; }
.op-checklist summary { cursor:pointer; font-weight:750; padding:5px 0; }
.op-checklist ul { padding-left:22px; font-size:.9rem; }
.op-checklist p { font-size:.9rem; }
.op-caution { margin:0 30px 20px!important; padding:14px 16px; background:#f4f5f0; border-left:3px solid #789b87; font-size:.83rem; line-height:1.6; }
.op-next { display:inline-block; margin:0 30px 28px; font-weight:700; font-size:.9rem; }
.op-hub { padding-bottom:40px; }
.op-hub-hero { padding:64px 0 42px; border-bottom:1px solid #dce4df; background:linear-gradient(115deg,#f7f7f2 45%,#e7eee4); }
.op-hub-hero h1 { max-width:850px; font-size:clamp(2.4rem,4.8vw,4rem); line-height:1.07; letter-spacing:-.05em; margin:16px 0 22px; }
.op-hub-hero h1 span { color:#0e7064; }
.op-hub-hero .hero-copy { max-width:700px; }
.op-hub-tabs { display:flex; flex-wrap:wrap; gap:12px 28px; margin-top:28px; font-size:.9rem; font-weight:650; }
.op-hub-tabs a { padding:8px 0; }
.op-paths { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:18px; }
.op-path { padding:26px; border:1px solid #dce4df; border-radius:16px; background:white; display:flex; flex-direction:column; }
.op-path:first-child { background:#0a493f; color:#d2e5db; }
.op-path:first-child h3,.op-path:first-child a { color:white; }
.op-path h3 { font-size:1.4rem; margin:14px 0; }
.op-path p { font-size:.93rem; }
.op-path a { margin-top:auto; padding-top:15px; font-weight:700; }
.op-kicker { font-size:.72rem; letter-spacing:.1em; text-transform:uppercase; font-weight:750; }
.op-decision { margin:24px 0 32px; padding:24px; border:1px solid #c5d8ce; border-radius:16px; background:#edf4ed; }
.op-decision > p { margin-top:0; }
.op-decision-grid { display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.op-decision-grid div { padding:18px; background:white; border-radius:10px; }
.op-decision-grid h3 { margin:0 0 8px; }
.op-decision-grid p { font-size:.92rem; margin-bottom:0; }
.op-hub .section { padding:48px 0 8px; }
.op-hub a:focus-visible,.op-lesson a:focus-visible,.op-checklist summary:focus-visible { outline:3px solid #b17b19; outline-offset:4px; }
.op-resources { margin-top:60px; padding:30px; border:1px solid #c5d8ce; border-radius:20px; background:#edf4ed; scroll-margin-top:24px; }
.op-resources fieldset { margin:0; padding:20px; border:1px solid #c5d8ce; border-radius:12px; background:white; min-width:0; }
.op-resources legend { font-weight:750; padding:0 5px; }
.op-resources label { display:flex; gap:10px; margin:12px 0; font-size:.92rem; }
.op-resources input { flex:0 0 auto; width:18px; height:18px; margin-top:5px; accent-color:#0e7064; }
.op-resources input:focus-visible { outline:3px solid #b17b19; outline-offset:3px; }
.op-cta-note { margin:8px 0 26px!important; color:#58675f; font-size:.8rem; line-height:1.55; }
.mobile-navigation ul { margin:0; padding:0; list-style:none; }
.mobile-navigation li a { display:block; }
.op-problem-links { display:flex; flex-wrap:wrap; gap:12px; margin-top:24px; }
.op-problem-links a { padding:10px 14px; border:1px solid #c5d8ce; border-radius:9px; background:white; font-weight:650; }
@media(max-width:700px) {
  .op-lesson-grid,.op-paths,.op-decision-grid { grid-template-columns:1fr; }
  .op-lesson-header,.op-lesson-grid { padding:22px 18px; }
  .op-checklist { margin-inline:18px; }
  .op-caution { margin-inline:18px!important; }
  .op-next { margin-inline:18px; }
  .op-hub-hero { padding-top:36px; }
  .op-message { padding:18px; }
}
@media print {
  .site-header,.site-footer,.article-sidebar { display:none!important; }
  .article-layout,.op-lesson-grid { display:block; }
  .op-lesson { break-inside:avoid; box-shadow:none; }
  .op-resources { background:white; }
}