.tide-overview{--tide-focus:var(--sky);padding-block:var(--section);background:var(--ink);color:var(--paper)}.tide-overview-grid{grid-template-columns:minmax(0,1fr);gap:clamp(2.5rem,1rem + 4vw,4.5rem);display:grid}.tide-overview-lead{max-width:36ch;margin-top:1.75rem;font-size:clamp(1.125rem,1rem + .45vw,1.375rem);line-height:1.5}.tide-overview-wants{border-top:var(--rule) solid var(--paper);margin-top:1.5rem}.tide-overview-wants li{padding-block:1rem;border-bottom:var(--rule) solid var(--paper);background:linear-gradient(var(--sky), var(--sky)) 0 1.55rem / .75rem var(--rule) no-repeat;padding-left:1.75rem;font-size:1.125rem;line-height:1.5}.tide-overview-body{gap:1.5rem;max-width:52ch;font-size:1.125rem;line-height:1.6;display:grid}.tide-overview-intro{font-size:clamp(1.25rem,1rem + .9vw,1.75rem);line-height:1.4}.tide-overview-facts{gap:var(--gap);margin-block:.5rem;display:grid}.tide-overview-facts p{border-top:var(--rule) solid var(--sky);padding-top:1rem}.tide-overview-em{color:var(--sky);font-weight:700}.tide-overview .tide-text-link{color:var(--sky)}@media (min-width:40rem){.tide-overview-facts{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (min-width:64rem){.tide-overview-grid{column-gap:var(--gap);grid-template-columns:repeat(12,minmax(0,1fr))}.tide-overview-head{grid-column:1/6}.tide-overview-body{grid-column:7/-1}}.tide-learn{padding-block:var(--section)}.tide-learn-head{gap:1.75rem;margin-bottom:clamp(2.5rem,1.5rem + 3vw,4.5rem);display:grid}.tide-learn-lead{max-width:58ch;font-size:clamp(1.125rem,1rem + .45vw,1.375rem);line-height:1.5}.tide-sessions{gap:var(--rule);border-block:var(--rule) solid var(--ink);background:var(--ink);grid-template-columns:minmax(0,1fr);display:grid}.tide-session{background:var(--paper);align-content:start;gap:.75rem;padding:clamp(1.5rem,1rem + 1.5vw,2.25rem) clamp(1rem,.5rem + 1.5vw,2rem);display:grid}.tide-session-meta{align-items:baseline;gap:.75rem;display:flex}.tide-session-num{color:var(--navy);font-size:2.25rem;font-weight:800;font-stretch:125%;line-height:1}.tide-session-label{color:var(--ink-muted);letter-spacing:.1em;text-transform:uppercase;font-size:.8125rem;font-weight:800}.tide-session-title{letter-spacing:-.01em;text-transform:uppercase;min-height:2.2em;margin-bottom:.5rem;font-size:clamp(1.375rem,1.1rem + .8vw,1.75rem);font-weight:800;line-height:1.05}.tide-topics{border-top:var(--rule) solid var(--ink)}.tide-topic{border-bottom:1px solid color-mix(in srgb, var(--ink) 22%, transparent)}.tide-topic-btn{text-align:left;cursor:pointer;justify-content:space-between;align-items:center;gap:.75rem;width:100%;min-height:2.75rem;padding-block:.625rem;font-size:1rem;font-weight:600;line-height:1.3;display:flex}.tide-topic-btn:focus-visible{outline-offset:-2px}.tide-topic-btn .tide-chevron,.tide-topic-btn svg{width:1rem;height:1rem;color:var(--navy);flex:none;transition:rotate .16s}.tide-topic-btn[aria-expanded=true] svg{rotate:180deg}.tide-topic-panel{color:var(--ink-muted);padding:0 0 1rem;font-size:.9375rem;line-height:1.55}.tide-topic-panel ul{padding-left:1.1rem;list-style:outside}.tide-topic--homework{border-bottom:none}.tide-topic--homework .tide-topic-btn{color:var(--navy);font-weight:800}.tide-topic--homework .tide-topic-btn span{background:linear-gradient(var(--sky), var(--sky)) 0 50% / .6rem var(--rule) no-repeat;padding-left:1.1rem}@media (min-width:48rem){.tide-sessions{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (min-width:64rem){.tide-learn-head{column-gap:var(--gap);grid-template-columns:repeat(12,minmax(0,1fr));align-items:end}.tide-learn-head .tide-h2{grid-column:1/7}.tide-learn-lead{grid-column:7/-1}.tide-sessions{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (prefers-reduced-motion:reduce){.tide-topic-btn svg{transition:none}}