/* Visual layer for the six main topic overviews and the lesson takeaways. */
.overview-panel{--topic:#6042c6;--topic-soft:#eee8ff;padding:20px;background:linear-gradient(180deg,#f7f9ff 0,#fff 46%)}
.overview-feature{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);align-items:center;gap:20px;padding:24px;border:1px solid color-mix(in srgb,var(--topic) 25%,#fff);border-radius:20px;background:linear-gradient(125deg,var(--topic-soft),#fff 72%);box-shadow:0 14px 32px #203c7813}
.overview-copy{min-width:0}.overview-kicker{display:inline-flex;align-items:center;gap:7px;margin:0 0 10px;color:var(--topic);font-size:.76rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.overview-kicker:before{content:'✦';font-size:1rem}
.overview-headline{font-size:clamp(1.35rem,2.3vw,2.02rem);line-height:1.15;letter-spacing:-.035em;color:#152d4e;margin:0 0 13px}.overview-lead{font-size:.98rem;line-height:1.65;color:#263c57;margin:0 0 14px}.overview-chips{display:flex;flex-wrap:wrap;gap:7px}.overview-chip{display:inline-flex;padding:6px 10px;border:1px solid color-mix(in srgb,var(--topic) 29%,#fff);border-radius:99px;background:#fff;color:#283e59;font-weight:780;font-size:.72rem;line-height:1.2}
.overview-art{min-width:0}.overview-art svg{display:block;width:100%;height:auto;filter:drop-shadow(0 13px 20px #1e31651b)}
.overview-aha{display:flex;gap:12px;align-items:center;margin:15px 0 23px;padding:13px 16px;border-radius:14px;background:#142d55;color:#fff;box-shadow:0 8px 18px #152e5320}.overview-aha-icon{display:grid;place-items:center;flex:none;width:40px;height:40px;border-radius:12px;background:#ffdc73;color:#34250b;font-size:1.5rem}.overview-aha strong{display:block;font-size:.76rem;letter-spacing:.08em;text-transform:uppercase;color:#ffe098}.overview-aha span:last-child{font-size:.91rem;line-height:1.45;color:#f5f8ff}
.overview-section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:10px;margin:0 0 12px}.overview-section-head .section-label{margin:0;color:#304da0;font-size:.8rem}.overview-section-head small{color:#526883;font-weight:700;font-size:.75rem}
.overview-list{gap:10px}.overview-link{--card:#6042c6;position:relative;display:grid;grid-template-columns:39px minmax(0,1fr) 30px;align-items:center;gap:12px;min-height:75px;overflow:hidden;padding:11px 13px;background:#fff;border:1px solid #dce5f2;border-left:4px solid var(--card);box-shadow:0 5px 14px #1b37570b;transition:transform .19s ease,box-shadow .19s ease,border-color .19s ease,background .19s ease}.overview-link:before{content:'';position:absolute;inset:0;background:linear-gradient(115deg,transparent 45%,color-mix(in srgb,var(--card) 9%,#fff));opacity:0;transition:opacity .19s ease;pointer-events:none}.overview-link:hover,.overview-link:focus-visible{transform:translateY(-3px);background:#fff;border-color:var(--card);box-shadow:0 13px 23px #1b375724}.overview-link:hover:before,.overview-link:focus-visible:before{opacity:1}.lesson-icon{display:grid;place-items:center;width:39px;height:39px;border-radius:11px;background:color-mix(in srgb,var(--card) 12%,#fff);color:var(--card);font-size:1.06rem;font-weight:900;line-height:1}.lesson-card-copy{display:block;min-width:0}.overview-link .lesson-card-title{display:block;color:#183657;font-size:.86rem;font-weight:850;line-height:1.3}.overview-link .lesson-card-copy .lesson-card-sub{display:block;color:#536982;font-size:.7rem;font-weight:650;margin-top:3px}.overview-link .lesson-card-arrow{display:grid;place-items:center;width:29px;height:29px;border-radius:50%;background:color-mix(in srgb,var(--card) 13%,#fff);color:var(--card);font-size:1.04rem;font-weight:900;transition:transform .19s ease,background .19s ease}.overview-link:hover .lesson-card-arrow,.overview-link:focus-visible .lesson-card-arrow{transform:translateX(3px);background:color-mix(in srgb,var(--card) 22%,#fff)}.overview-hint{display:flex;gap:8px;align-items:center;padding:11px 13px;margin:15px 0 0;border-radius:10px;background:#f2f6fc;color:#516783;font-size:.77rem}.overview-hint:before{content:'↖';font-size:1.08rem;color:#4462ac}.topic-head h2:focus{outline:none}
.lesson-visual{background:linear-gradient(180deg,#fff,#f8fbff);border-color:#d7e3f2;box-shadow:0 10px 24px #15376712}.lesson-visual figcaption{display:flex;gap:12px;align-items:center;margin:11px 0 0;padding:12px 14px;background:linear-gradient(105deg,#fff1cd,#fff9e9 72%,#eff7ff);border:1px solid #f0d791;border-radius:12px;color:#513c15;font-size:.85rem;font-weight:670}.wow-icon{display:grid;place-items:center;flex:none;width:38px;height:38px;border-radius:50%;background:#ffcf53;color:#4a3000;font-size:1.5rem;box-shadow:0 4px 9px #aa721f28}.wow-copy strong{display:block;color:#67430e;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;margin-bottom:1px}.wow-copy span{display:block;line-height:1.45}
.section-label{color:#324fa2}.point-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.point-list li{display:flex;gap:11px;align-items:flex-start;border:1px solid #d9e2f3;border-top:4px solid #5c5ad0;border-radius:12px;background:#f5f6ff;color:#263657;padding:13px 14px;min-height:100%;font-size:.89rem;line-height:1.5;box-shadow:0 6px 15px #22278d0b}.point-list li:nth-child(2n){border-top-color:#087d78;background:#eefbf8}.point-hand{flex:none;display:grid;place-items:center;width:28px;height:28px;border-radius:9px;background:#e2e0ff;font-size:1rem}.point-list li:nth-child(2n) .point-hand{background:#d2f3ea}.point-copy{display:block}.tip{background:linear-gradient(100deg,#e6f8f0,#f4fcf7);border-color:#a8ddc3;box-shadow:0 8px 17px #11634712}.tip-icon{width:39px;height:39px;border-radius:12px;background:#0a8469;color:#fff;font-size:1.25rem;box-shadow:0 5px 10px #0a846930}.tip strong{color:#075a49}.source-note{display:flex;align-items:center;gap:6px;margin-top:15px;color:#526782}.source-note a{color:#2f46b0;text-decoration:underline;text-underline-offset:2px}
@media(max-width:820px){.overview-feature{grid-template-columns:1fr 1fr;gap:12px;padding:17px}.overview-art svg{max-height:245px}}
@media(max-width:620px){.overview-panel{padding:14px}.overview-feature{grid-template-columns:1fr;padding:18px}.overview-art{max-width:360px;margin:auto}.overview-art svg{max-height:none}.overview-list,.point-list{grid-template-columns:1fr}.overview-link{min-height:68px}.overview-aha{align-items:flex-start}.overview-section-head{align-items:start;flex-direction:column;gap:3px}.point-list li{min-height:0}}
@media(prefers-reduced-motion:reduce){.overview-link,.overview-link:before,.lesson-card-arrow,.begin,.nav-button,.topic-btn{transition:none!important;animation:none!important}.overview-link:hover,.overview-link:focus-visible{transform:none}.overview-link:hover .lesson-card-arrow,.overview-link:focus-visible .lesson-card-arrow{transform:none}}
.overview-panel{padding:22px 24px 25px;background:#fff}.overview-section-head{align-items:center;margin-bottom:15px}.overview-section-head .section-label{font-size:1rem;color:var(--topic);letter-spacing:.02em}.overview-choose-copy{margin:4px 0 0;color:#526781;font-size:.88rem;line-height:1.45}.overview-section-head small{flex:none;border-radius:99px;background:var(--topic-soft);color:var(--topic);padding:6px 11px}
@media(max-width:620px){.overview-panel{padding:17px 15px 20px}.overview-section-head{align-items:flex-start}.overview-section-head small{margin-top:4px}}
.overview-intro{margin:0 0 20px;padding:15px 17px;border:1px solid color-mix(in srgb,var(--topic) 24%,#fff);border-left:4px solid var(--topic);border-radius:12px;background:linear-gradient(105deg,var(--topic-soft),#fff 76%)}.overview-intro strong{display:block;color:var(--topic);font-size:.78rem;letter-spacing:.035em;text-transform:uppercase}.overview-intro p{max-width:72ch;margin:6px 0 12px;color:#263b55;font-size:.96rem;line-height:1.6}.overview-start{border:0;border-radius:9px;padding:9px 13px;background:var(--topic);color:#fff;font-size:.82rem;font-weight:850;text-align:left}.overview-start:hover,.overview-start:focus-visible{filter:brightness(.9)}
@media(max-width:620px){.overview-intro{padding:13px 14px}.overview-intro p{font-size:.9rem}.overview-start{width:100%}}