.theme-schools {
  --ybag-blue: #1268c4;
  --ybag-pink: #e93078;
  --ybag-gold: #ffad00;
  --ybag-green: #62a916;
  --ybag-violet: #8246b4;
  --ybag-orange: #e97912;
  --ybag-frame: 1380px;
  --ybag-radius-sm: 12px;
  --ybag-radius-md: 20px;
  --ybag-radius-lg: 28px;
  --ybag-shadow: 0 18px 48px rgba(20, 43, 92, .10);
}

.theme-schools .page-shell { overflow: hidden; color: var(--ink); background: var(--paper); }
.theme-schools h1, .theme-schools h2, .theme-schools h3, .ybag-nav-link, .ybag-button { font-family: 'Changa', Arial, Helvetica, sans-serif; }
.ybag-kicker { margin: 0 0 10px; color: var(--accent); font-size: 12px; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; }
.ybag-skip-link { position: fixed; z-index: 1000; top: 12px; left: 12px; border-radius: 12px; padding: 11px 16px; color: #fff; background: var(--brand-dark); box-shadow: 0 10px 30px rgba(10,27,66,.22); font-weight: 900; text-decoration: none; transform: translateY(-170%); transition: transform .16s ease; }
.ybag-skip-link:focus { color: #fff; outline: 3px solid var(--focus); outline-offset: 3px; transform: translateY(0); }

.ybag-button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; border: 1px solid transparent; border-radius: 15px; padding: 11px 23px 9px; font-weight: 800; line-height: 1; text-decoration: none; transition: transform .16s ease, box-shadow .16s ease; }
.ybag-button:hover { transform: translateY(-2px); }
.ybag-button-primary { color: #fff; background: var(--accent); box-shadow: 0 10px 24px color-mix(in srgb, var(--accent) 25%, transparent); }
.ybag-button-primary:hover { color: #fff; box-shadow: 0 14px 30px color-mix(in srgb, var(--accent) 34%, transparent); }
.ybag-button-secondary { color: var(--brand-dark); border-color: color-mix(in srgb, var(--brand) 45%, var(--line)); background: var(--panel); }
.ybag-button-secondary:hover { color: var(--brand-dark); box-shadow: 0 10px 22px color-mix(in srgb, var(--brand) 16%, transparent); }

.ybag-header { position: relative; z-index: 50; border-bottom: 1px solid var(--line); background: var(--header); }
.ybag-header-inner { display: grid; grid-template-columns: 280px minmax(0, 1fr); align-items: center; gap: 38px; width: min(calc(100% - 48px), var(--ybag-frame)); min-height: 118px; margin: 0 auto; }
.ybag-brand { display: inline-flex; align-items: center; justify-content: center; color: var(--ink); text-decoration: none; }
.ybag-brand-header { justify-content: flex-start; border-radius: 18px; padding: 5px 8px; background: #fff; }
.ybag-brand-header img { display: block; width: 258px; height: auto; object-fit: contain; }
.ybag-nav { display: flex; align-items: center; gap: 7px; }
.ybag-nav-primary { justify-content: flex-end; }
.ybag-nav-session { margin: 0; }
.ybag-nav-session .ybag-nav-link { appearance: none; cursor: pointer; }
.ybag-nav-link { --nav-glow: var(--nav-accent, var(--brand)); position: relative; isolation: isolate; display: inline-flex; min-height: 48px; align-items: center; gap: 11px; overflow: hidden; border: 1px solid transparent; border-radius: 15px; padding: 9px 13px 7px; color: var(--ink); font-size: 18px; font-weight: 800; text-decoration: none; transition: color .2s ease, border-color .2s ease, background-color .2s ease, box-shadow .2s ease, transform .2s ease; }
.ybag-nav-link::before { width: 12px; height: 12px; flex: 0 0 12px; border-radius: 50%; background: var(--nav-glow); box-shadow: 0 0 0 0 color-mix(in srgb, var(--nav-glow) 0%, transparent); content: ''; transition: transform .2s ease, box-shadow .2s ease; }
.ybag-nav-link::after { position: absolute; z-index: -1; inset: 0; background: radial-gradient(circle at 18px 50%, color-mix(in srgb, var(--nav-glow) 22%, transparent), color-mix(in srgb, var(--nav-glow) 8%, transparent) 48%, transparent 75%); content: ''; opacity: 0; transition: opacity .2s ease; }
.ybag-nav-link:hover, .ybag-nav-link:focus-visible { color: var(--ink); border-color: color-mix(in srgb, var(--nav-glow) 58%, var(--line)); background: color-mix(in srgb, var(--nav-glow) 7%, var(--panel)); box-shadow: 0 0 0 3px color-mix(in srgb, var(--nav-glow) 7%, transparent), 0 9px 24px color-mix(in srgb, var(--nav-glow) 12%, transparent), inset 0 1px rgba(255,255,255,.24); transform: translateY(-2px); }
.ybag-nav-link:hover::before, .ybag-nav-link:focus-visible::before { transform: scale(1.25); box-shadow: 0 0 6px color-mix(in srgb, var(--nav-glow) 72%, transparent), 0 0 14px color-mix(in srgb, var(--nav-glow) 42%, transparent), 0 0 0 4px color-mix(in srgb, var(--nav-glow) 9%, transparent); }
.ybag-nav-link:hover::after, .ybag-nav-link:focus-visible::after { opacity: 1; }
.ybag-nav-link[aria-current="page"] { border-color: color-mix(in srgb, var(--nav-glow) 42%, var(--line)); background: color-mix(in srgb, var(--nav-glow) 6%, var(--panel)); }
.ybag-nav-link[aria-current="page"]::before { box-shadow: 0 0 0 4px color-mix(in srgb, var(--nav-glow) 10%, transparent); }
.accent-home { --nav-accent: var(--ybag-blue); }.accent-videos { --nav-accent: var(--ybag-pink); }.accent-games { --nav-accent: var(--ybag-gold); }.accent-school { --nav-accent: var(--ybag-green); }.accent-store { --nav-accent: var(--ybag-green); }.accent-login { --nav-accent: var(--ybag-violet); }

.ybag-quick-menu { position: relative; margin-left: 4px; }
.ybag-quick-menu summary { display: grid; width: 44px; height: 44px; place-items: center; border: 1px solid var(--line); border-radius: 14px; color: var(--ink); background: var(--panel); cursor: pointer; font-size: 20px; list-style: none; }
.ybag-quick-menu summary::-webkit-details-marker { display: none; }
.ybag-quick-menu[open] summary { border-color: var(--focus); outline: 3px solid color-mix(in srgb, var(--focus) 20%, transparent); }
.ybag-quick-panel { position: absolute; top: calc(100% + 12px); right: 0; width: min(500px, calc(100vw - 32px)); max-height: calc(100vh - 150px); overflow-y: auto; overscroll-behavior: contain; padding: 22px; border: 1px solid var(--line); border-radius: var(--ybag-radius-md); color: var(--ink); background: var(--panel); box-shadow: 0 26px 70px rgba(10, 27, 66, .20); }
.ybag-quick-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; margin-bottom: 15px; }
.ybag-quick-heading strong { color: var(--brand-dark); font: 800 19px/1.2 'Changa', Arial, sans-serif; }
.ybag-quick-heading span { color: var(--muted); font-size: 13px; }
.ybag-quick-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 28px; }
.ybag-quick-grid section { display: flex; min-width: 0; flex-direction: column; padding: 13px 0; border-top: 2px solid var(--line); }
.ybag-quick-grid section > strong { margin-bottom: 5px; color: var(--muted); font-size: 11px; letter-spacing: .11em; text-transform: uppercase; }
.ybag-quick-grid a, .ybag-quick-grid .link-button { padding: 7px 0; border: 0; color: var(--ink); background: transparent; font-weight: 700; text-align: left; text-decoration: none; }
.ybag-quick-grid a:hover, .ybag-quick-grid .link-button:hover { color: var(--brand); }
.ybag-quick-grid form { margin: 0; }

.ybag-footer { position: relative; overflow: hidden; border-top: 1px solid #dbe4f5; color: #10245c; background: #fff; }
.ybag-footer::before { display: block; width: 100%; height: 7px; background: linear-gradient(90deg, var(--ybag-blue) 0 16.66%, var(--ybag-pink) 16.66% 33.33%, var(--ybag-gold) 33.33% 50%, var(--ybag-green) 50% 66.66%, var(--ybag-violet) 66.66% 83.33%, var(--ybag-orange) 83.33%); content: ''; }
.ybag-footer::after { position: absolute; right: -170px; bottom: -210px; width: 440px; height: 440px; border: 55px solid rgba(18,104,196,.045); border-radius: 50%; content: ''; pointer-events: none; }
.ybag-footer-inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(300px, 1.35fr) repeat(3, minmax(160px, .7fr)); gap: clamp(34px, 4vw, 66px); width: min(calc(100% - 48px), var(--ybag-frame)); margin: 0 auto; padding: 58px 0 46px; }
.ybag-footer .ybag-brand { justify-content: flex-start; }
.ybag-brand-footer img { width: 270px; max-width: 100%; height: auto; border-radius: 18px; object-fit: contain; }
.ybag-footer-brand p { max-width: 430px; margin: 20px 0 0; color: #596583; font-size: 16px; line-height: 1.7; }
.ybag-footer-brand { grid-column: auto; }
.ybag-footer-pulse { display: flex; align-items: center; gap: 8px; margin-top: 26px; }
.ybag-footer-pulse i { width: 32px; height: 8px; border-radius: 999px; background: var(--ybag-blue); }
.ybag-footer-pulse i:nth-child(2) { width: 18px; background: var(--ybag-pink); }.ybag-footer-pulse i:nth-child(3) { width: 26px; background: var(--ybag-gold); }.ybag-footer-pulse i:nth-child(4) { width: 14px; background: var(--ybag-green); }.ybag-footer-pulse i:nth-child(5) { width: 22px; background: var(--ybag-violet); }.ybag-footer-pulse i:nth-child(6) { width: 10px; background: var(--ybag-orange); }
.ybag-footer nav { display: flex; flex-direction: column; gap: 10px; }
.ybag-footer nav strong { display: flex; align-items: center; gap: 9px; margin-bottom: 8px; font-family: 'Changa', Arial, sans-serif; color: #0b2a6b; font-size: 18px; }
.ybag-footer nav strong span { display: grid; width: 25px; height: 25px; place-items: center; border-radius: 8px; color: #fff; background: #1268c4; font: 900 10px/1 Arial, sans-serif; }
.ybag-footer-inner nav:nth-of-type(2) strong span { background: var(--ybag-green); }
.ybag-footer-inner nav:nth-of-type(3) strong span { background: var(--ybag-violet); }
.ybag-footer nav a { width: fit-content; color: #596583; font-weight: 700; text-decoration: none; transition: color .16s ease, transform .16s ease; }
.ybag-footer nav a:hover { color: #1268c4; transform: translateX(4px); }
.ybag-footer-bottom { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 24px; width: min(calc(100% - 48px), var(--ybag-frame)); margin: 0 auto; border-top: 1px solid #dbe4f5; padding: 24px 0 30px; }
.ybag-footer-bottom p { margin: 0; color: #596583; font-size: 13px; font-weight: 700; }
.ybag-footer-bottom nav { flex-direction: row; gap: 20px; }
.ybag-footer-bottom nav a { font-size: 13px; }

.design-variant-dark-1.theme-schools { --ybag-shadow: 0 18px 48px rgba(0,0,0,.25); }
.design-variant-dark-1 .ybag-header { box-shadow: inset 0 -1px rgba(98,181,255,.08); }
.design-variant-dark-1 .ybag-brand-header { box-shadow: 0 0 0 1px rgba(255,255,255,.08); }

/* Interior pages 2.0: one restrained system with a distinct menu accent per destination. */
.theme-schools .accent-school { --page-accent: var(--ybag-green); --page-accent-soft: color-mix(in srgb, var(--ybag-green) 13%, var(--panel)); }
.theme-schools .accent-store { --page-accent: var(--ybag-violet); --page-accent-soft: color-mix(in srgb, var(--ybag-violet) 12%, var(--panel)); }
.theme-schools .accent-login { --page-accent: var(--ybag-orange); --page-accent-soft: color-mix(in srgb, var(--ybag-orange) 12%, var(--panel)); }
.ybag-hero-device { position: relative; display: grid; width: min(100%, 420px); aspect-ratio: 1 / 1.08; place-items: center; justify-self: center; border: 1px solid color-mix(in srgb, var(--page-accent, var(--stage-accent, var(--brand))) 20%, var(--line)); border-radius: 34px; padding: 22px 22px 42px; background: #fff; box-shadow: 0 24px 64px rgba(20,43,92,.15); transform: rotate(1deg); }
.ybag-hero-device::before { position: absolute; top: 9px; left: 50%; width: 46px; height: 5px; border-radius: 999px; background: #d7dfef; content: ''; transform: translateX(-50%); }
.ybag-hero-device-screen { width: 100%; height: 100%; border: 1px solid #dfe7f6; border-radius: 24px; background-color: #eef4ff; background-image: var(--hero-screen), url('/media/brand/your-babys-a-genius-logo-horizontal.png'); background-position: center; background-repeat: no-repeat; background-size: cover, contain; box-shadow: inset 0 0 0 1px rgba(255,255,255,.75); }
.ybag-hero-device-dots { position: absolute; bottom: 16px; left: 50%; display: flex; gap: 6px; transform: translateX(-50%); }
.ybag-hero-device-dots i { width: 7px; height: 7px; border-radius: 50%; background: #d5ddeb; }
.ybag-hero-device-dots i:first-child { width: 26px; border-radius: 999px; background: var(--page-accent, var(--stage-accent, var(--ybag-pink))); }
.ybag-interior-hero { --page-accent: var(--brand); --page-accent-soft: var(--panel-alt); position: relative; isolation: isolate; display: grid; box-sizing: border-box; grid-template-columns: minmax(0, 1fr) minmax(360px, 420px); align-items: center; gap: clamp(44px, 7vw, 92px); width: 100%; min-height: 510px; margin: 0; overflow: hidden; border: 0; border-radius: 0; padding: clamp(48px, 7vw, 82px) max(24px, calc((100vw - var(--ybag-frame)) / 2 + 24px)); background: linear-gradient(135deg, var(--panel) 0 64%, var(--page-accent-soft) 64%); box-shadow: none; }
.theme-schools .blog-hero { border: 0; }
.ybag-interior-hero::before { position: absolute; z-index: -1; top: -160px; right: -90px; width: 420px; height: 420px; border: 48px solid color-mix(in srgb, var(--page-accent) 13%, transparent); border-radius: 50%; content: ''; }
.ybag-interior-hero.accent-videos, .ybag-interior-hero.accent-games { background: radial-gradient(circle at 82% 18%, color-mix(in srgb, var(--page-accent) 13%, transparent), transparent 29%), linear-gradient(145deg, var(--panel) 0 66%, var(--page-accent-soft) 66%); }
.ybag-interior-hero.accent-videos::before, .ybag-interior-hero.accent-games::before { top: -175px; right: -105px; width: 470px; height: 470px; border-width: 44px; border-color: color-mix(in srgb, var(--page-accent) 11%, transparent); }
.ybag-interior-hero.accent-videos::after, .ybag-interior-hero.accent-games::after { position: absolute; z-index: -1; bottom: 34px; left: clamp(34px, 5vw, 74px); width: 92px; height: 10px; border-radius: 999px; background: linear-gradient(90deg, var(--page-accent) 0 48%, transparent 48% 59%, color-mix(in srgb, var(--page-accent) 48%, var(--ybag-blue)) 59% 82%, transparent 82%); content: ''; opacity: .8; }
.ybag-interior-hero.accent-videos .ybag-hero-device, .ybag-interior-hero.accent-games .ybag-hero-device { border-color: color-mix(in srgb, var(--page-accent) 30%, var(--line)); box-shadow: 0 26px 66px color-mix(in srgb, var(--page-accent) 13%, rgba(20,43,92,.12)); }
.design-variant-dark-1 .ybag-interior-hero.accent-videos, .design-variant-dark-1 .ybag-interior-hero.accent-games { background: radial-gradient(circle at 82% 18%, color-mix(in srgb, var(--page-accent) 14%, transparent), transparent 31%), linear-gradient(145deg, #08142f, var(--panel) 68%); }
.ybag-interior-hero-copy { max-width: 760px; }
.ybag-page-signal { display: flex; align-items: center; gap: 10px; margin: 0 0 22px; color: var(--muted); font-size: 11px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.ybag-page-signal span { border-radius: 999px; padding: 7px 11px 5px; color: #fff; background: var(--page-accent); }
.ybag-interior-hero h1 { max-width: 720px; margin: 0; color: var(--brand-dark); font-size: clamp(40px, 4.2vw, 58px); line-height: 1.02; letter-spacing: -.032em; }
.ybag-interior-hero h1 em { color: var(--page-accent); font-style: normal; }
.ybag-interior-hero-copy > p:not(.ybag-page-signal) { max-width: 680px; margin: 24px 0 0; color: var(--muted); font-size: 18px; line-height: 1.7; }
.ybag-interior-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 30px; }
.ybag-interior-hero .ybag-button-primary { background: var(--page-accent); box-shadow: 0 10px 24px color-mix(in srgb, var(--page-accent) 25%, transparent); }
.ybag-signal-card { position: relative; z-index: 1; display: flex; min-height: 286px; flex-direction: column; justify-content: space-between; overflow: hidden; border: 1px solid color-mix(in srgb, var(--page-accent) 24%, var(--line)); border-radius: 26px; padding: 26px; color: var(--brand-dark); background: color-mix(in srgb, var(--panel) 82%, transparent); box-shadow: 0 22px 44px color-mix(in srgb, var(--page-accent) 13%, transparent); }
.ybag-signal-card > span { font-size: 11px; font-weight: 900; letter-spacing: .16em; }
.ybag-signal-card strong { color: var(--page-accent); font: 800 92px/.8 'Changa', Arial, sans-serif; letter-spacing: -.06em; }
.ybag-signal-card i { width: 100%; height: 12px; border-radius: 999px; background: linear-gradient(90deg, var(--page-accent) 0 56%, color-mix(in srgb, var(--page-accent) 23%, transparent) 56%); }
.ybag-signal-card p { margin: 0; color: var(--muted); font-size: 12px; font-weight: 800; }
.ybag-interior-library { width: min(calc(100% - 48px), var(--ybag-frame)); margin: 0 auto; padding: 74px 0 90px; }
.ybag-library-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 32px; }
.ybag-library-heading h2 { max-width: 740px; margin: 0; color: var(--brand-dark); font-size: clamp(35px, 4vw, 50px); line-height: 1.04; letter-spacing: -.025em; }
.ybag-library-heading > span { border: 1px solid var(--line); border-radius: 999px; padding: 10px 14px; color: var(--muted); background: var(--panel); font-size: 12px; font-weight: 800; }
.ybag-interior-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.ybag-interior-card, .ybag-interior-empty { position: relative; display: flex; min-width: 0; min-height: 310px; flex-direction: column; border: 1px solid var(--line); border-radius: var(--ybag-radius-md); padding: 30px; background: var(--panel); }
.ybag-interior-card::before, .ybag-interior-empty::before { position: absolute; top: 0; left: 30px; width: 58px; height: 5px; border-radius: 0 0 999px 999px; background: var(--page-accent, var(--brand)); content: ''; }
.ybag-card-index { align-self: flex-end; color: color-mix(in srgb, var(--page-accent, var(--brand)) 32%, var(--line)); font: 800 44px/1 'Changa', Arial, sans-serif; }
.ybag-card-label { margin: 24px 0 7px; color: var(--page-accent, var(--brand)); font-size: 11px; font-weight: 900; letter-spacing: .11em; text-transform: uppercase; }
.ybag-interior-card h3, .ybag-interior-empty h3 { margin: 0; color: var(--brand-dark); font-size: 26px; line-height: 1.1; }
.ybag-interior-card > p:not(.ybag-card-label), .ybag-interior-empty > p { color: var(--muted); line-height: 1.65; }
.ybag-card-footer { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-top: auto; padding-top: 22px; border-top: 1px solid var(--line); }
.ybag-card-footer small, .ybag-card-footer > span { color: var(--muted); font-size: 12px; font-weight: 800; }
.ybag-card-footer a, .ybag-interior-empty > a { color: var(--brand-dark); font-weight: 900; }
.ybag-interior-empty { grid-column: 1 / -1; max-width: 760px; min-height: 270px; }
.ybag-parent-notes { display: grid; grid-template-columns: minmax(260px, .75fr) minmax(0, 1.25fr); gap: clamp(36px, 6vw, 80px); width: min(calc(100% - 48px), var(--ybag-frame)); margin: 0 auto; padding: 62px 0; }
.ybag-parent-notes h2 { max-width: 570px; margin: 0; color: var(--brand-dark); font-size: clamp(32px, 4vw, 46px); line-height: 1.04; }
.ybag-parent-notes ul { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 0; padding: 0; list-style: none; }
.ybag-parent-notes li { border: 1px solid var(--line); border-radius: 16px; padding: 20px; background: var(--panel); }
.ybag-parent-notes strong { display: block; margin-bottom: 7px; color: var(--page-accent, var(--brand)); font: 800 20px/1.1 'Changa', Arial, sans-serif; }
.ybag-parent-notes span { color: var(--muted); font-size: 14px; line-height: 1.55; }

.theme-schools .auth-panel { position: relative; width: min(calc(100% - 40px), 620px); margin: 64px auto 90px; overflow: hidden; border: 1px solid var(--line); border-top: 0; border-radius: var(--ybag-radius-lg); padding: clamp(38px, 6vw, 62px); background: var(--panel); box-shadow: var(--ybag-shadow); }
.theme-schools .auth-panel::before { display: block; width: 72px; height: 7px; margin-bottom: 34px; border-radius: 999px; background: var(--ybag-orange); content: ''; }
.theme-schools .auth-panel h1 { color: var(--brand-dark); font: 800 clamp(40px, 4.2vw, 58px)/1.02 'Changa', Arial, sans-serif; letter-spacing: -.027em; }
.theme-schools .auth-panel > p:not(.eyebrow) { color: var(--muted); font-size: 17px; }
.theme-schools .auth-panel .eyebrow { color: var(--ybag-orange); }
.theme-schools .auth-panel .button { min-height: 50px; border-radius: 14px; background: var(--ybag-orange); }
.theme-schools .auth-page { --page-accent: var(--ybag-orange); display: grid; box-sizing: border-box; grid-template-columns: minmax(0, 1fr) minmax(360px, 420px); gap: clamp(42px, 7vw, 90px); width: 100%; margin: 0; padding: clamp(52px, 7vw, 88px) max(24px, calc((100vw - 1180px) / 2 + 24px)); align-items: center; background: linear-gradient(135deg, var(--panel) 0 68%, color-mix(in srgb, var(--ybag-orange) 10%, var(--panel)) 68%); }
.theme-schools .auth-page .auth-panel { width: auto; margin: 0; }
.theme-schools .auth-page .auth-panel h1 { font-size: clamp(40px, 4.2vw, 58px); }
.theme-schools .auth-device { width: min(100%, 420px); }
.theme-schools .auth-privacy-note { margin-top: 28px; border-top: 1px solid var(--line); padding-top: 18px; font-size: 13px !important; }

.theme-schools :where(a, button, summary, input, select, textarea):focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }

@media (max-width: 1120px) {
  .ybag-header-inner { grid-template-columns: 1fr auto; }
  .ybag-nav-primary .ybag-nav-link { display: none; }
  .ybag-footer-inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ybag-footer-brand { grid-column: 1 / -1; }
  .ybag-interior-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 820px) {
  .ybag-interior-hero { grid-template-columns: 1fr; min-height: 0; }
  .ybag-signal-card { min-height: 210px; }
  .ybag-interior-grid { grid-template-columns: 1fr; }
  .ybag-parent-notes { grid-template-columns: 1fr; }
  .theme-schools .auth-page { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .ybag-header-inner { width: min(calc(100% - 28px), var(--ybag-frame)); min-height: 88px; gap: 12px; }
  .ybag-brand-header img { width: min(190px, 65vw); }
  .ybag-quick-panel { position: fixed; top: 78px; right: 14px; display: flex; max-height: calc(100vh - 92px); flex-direction: column; overflow: hidden; }
  .ybag-quick-grid { min-height: 0; grid-template-columns: 1fr; overflow: auto; }
  .ybag-quick-heading span { display: none; }
  .ybag-footer-inner { grid-template-columns: 1fr 1fr; width: min(calc(100% - 40px), var(--ybag-frame)); padding: 44px 0; }
  .ybag-footer-brand { grid-column: 1 / -1; }
  .ybag-footer-bottom nav { flex-wrap: wrap; }
  .ybag-footer-bottom { width: min(calc(100% - 40px), var(--ybag-frame)); align-items: flex-start; flex-direction: column; }
  .ybag-interior-library { width: min(calc(100% - 28px), var(--ybag-frame)); }
  .ybag-interior-hero { width: 100%; margin-top: 0; border-radius: 0; padding: 36px 24px; }
  .ybag-interior-hero h1 { font-size: 40px; }
  .ybag-library-heading { align-items: start; flex-direction: column; }
  .ybag-interior-card, .ybag-interior-empty { padding: 25px; }
  .ybag-parent-notes { width: min(calc(100% - 30px), var(--ybag-frame)); }
  .ybag-parent-notes ul { grid-template-columns: 1fr; }
  .theme-schools .auth-page { width: 100%; padding: 42px 24px; }
}
@media (max-width: 520px) {
  .ybag-footer-inner { grid-template-columns: 1fr; gap: 30px; }
  .ybag-footer-brand { grid-column: auto; }
  .ybag-brand-footer img { width: 240px; }
  .ybag-footer-bottom nav { gap: 12px 16px; }
}
@media (prefers-reduced-motion: reduce) { .ybag-button, .ybag-skip-link, .ybag-nav-link, .ybag-nav-link::before, .ybag-nav-link::after { transition: none; } }
@media (forced-colors: active) {
  .ybag-nav-link, .ybag-button, .ybag-quick-menu summary { border: 1px solid ButtonText; }
  .ybag-nav-link[aria-current="page"] { outline: 2px solid Highlight; outline-offset: 2px; }
}