:root {
  color-scheme: light;
  --ink: #0d2039;
  --ink-soft: #53677e;
  --brand-blue: #0e5fae;
  --brand-navy: #0a376b;
  --brand-cyan: #00aee6;
  --brand-pale: #e8f5ff;
  --blue-pale: #e8f2ff;
  --line: #d8e2ef;
  --line-strong: #bfd0e2;
  --panel: #ffffff;
  --panel-2: #f7faff;
  --paper: #f4f8fd;
  --canvas: #f4f8fd;
  --surface-soft: #f7faff;
  --surface-blue: #eff7ff;
  --white: #ffffff;
  --muted: #53677e;
  --muted-dark: #53677e;
  --teal: #00aee6;
  --teal-dark: #0e5fae;
  --teal-deep: #0a376b;
  --mint: #e8f5ff;
  --gold: #f3c34c;
  --coral: #ff796e;
  --border: #d8e2ef;
  --border-dark: rgba(191, 208, 226, 0.45);
  --shadow: 0 14px 38px rgba(10, 35, 68, 0.10);
  --shadow-dark: 0 20px 48px rgba(10, 35, 68, 0.18);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); }
a { color: inherit; }
button, input, textarea, select { font: inherit; }
h1, h2, h3, p { overflow-wrap: anywhere; }
h1, h2, h3 { text-wrap: balance; }
p { line-height: 1.68; }

.section-shell { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.site-announcement { display: flex; align-items: center; justify-content: center; gap: 10px; min-height: 36px; padding: 8px 20px; color: #e8f5ff; background: var(--teal-deep); font-size: 12px; font-weight: 750; letter-spacing: .015em; }
.site-announcement a { margin-left: 8px; color: var(--gold); text-decoration: none; }
.site-announcement a:hover { color: var(--teal); }
.announcement-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 5px rgba(0, 174, 230, .12); }

.site-header { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 76px; padding: 13px max(24px, calc((100% - 1180px) / 2)); color: var(--ink); background: rgba(255, 255, 255, .96); border-bottom: 1px solid var(--border); backdrop-filter: blur(18px); }
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); text-decoration: none; }
.brand-logo { display: block; flex: 0 0 auto; width: 166px; height: 81px; padding: 0; border: 0; border-radius: 0; background: transparent; object-fit: contain; object-position: center; mix-blend-mode: normal; }
.brand strong, .brand small { display: block; line-height: 1.12; }
.brand strong { font-size: 15px; letter-spacing: -.02em; }
.brand small { margin-top: 3px; color: var(--ink-soft); font-size: 10px; font-weight: 650; letter-spacing: .03em; }
.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a, .link-button { display: inline-flex; align-items: center; min-height: 40px; padding: 9px 12px; color: #344b68; border: 0; border-radius: 9px; background: transparent; font-size: 13px; font-weight: 760; text-decoration: none; cursor: pointer; }
.site-nav a:hover, .link-button:hover { color: var(--teal-dark); background: #e8f2ff; }
.site-nav .nav-link-muted { color: var(--ink-soft); }
.site-nav .nav-action { margin-left: 6px; padding-inline: 16px; color: var(--white); background: var(--teal-dark); }
.site-nav .nav-action:hover { color: var(--white); background: var(--teal-deep); }
.menu-button { display: none; min-height: 40px; padding: 9px 13px; color: var(--white); border: 1px solid var(--border-dark); border-radius: 9px; background: transparent; font-weight: 800; cursor: pointer; }

.hero { position: relative; isolation: isolate; overflow: hidden; padding: clamp(74px, 10vw, 126px) 0 78px; color: var(--ink); background: radial-gradient(circle at 79% 20%, rgba(0, 174, 230, .14), transparent 31%), radial-gradient(circle at 11% 12%, rgba(14, 95, 174, .06), transparent 24%), linear-gradient(145deg, #f7fbff, #eaf3fc); }
.hero::before { position: absolute; inset: 0; z-index: -1; opacity: .18; background-image: linear-gradient(rgba(0, 174, 230, .11) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 174, 230, .11) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(to bottom, black, transparent 85%); content: ""; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(390px, .96fr); gap: clamp(42px, 7vw, 100px); align-items: center; }
.hero-content { position: relative; z-index: 1; }
.eyebrow, .section-kicker, .card-kicker, .price-tag { margin: 0 0 14px; color: var(--gold); font-size: 11px; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; }
.hero h1 { max-width: 720px; margin: 0; font-size: clamp(54px, 7.6vw, 104px); line-height: .92; letter-spacing: -.075em; }
.hero-copy { max-width: 660px; margin: 27px 0 0; color: var(--ink-soft); font-size: clamp(18px, 2vw, 22px); letter-spacing: -.018em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 30px; }
.hero-proof { display: flex; flex-wrap: wrap; gap: 10px 17px; margin-top: 30px; color: var(--ink-soft); font-size: 11px; font-weight: 750; }
.hero-proof span { display: inline-flex; align-items: center; gap: 7px; }
.hero-proof i { color: var(--teal); font-size: 10px; font-style: normal; }
.offer-ribbon { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 15px; max-width: 620px; margin-top: 24px; padding: 12px 14px; border-left: 2px solid var(--gold); color: #53677e; background: rgba(243,195,76,.07); font-size: 11px; }
.offer-ribbon strong { color: var(--gold); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 48px; padding: 13px 18px; border: 1px solid transparent; border-radius: 10px; font-size: 13px; font-weight: 900; line-height: 1.2; text-decoration: none; transition: transform .18s ease, background .18s ease, border-color .18s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { color: var(--white); background: var(--teal-dark); box-shadow: 0 8px 24px rgba(14, 95, 174, .18); }
.button.primary:hover { background: var(--teal-deep); }
.button.secondary { color: var(--teal-dark); border-color: var(--line-strong); background: rgba(255, 255, 255, .8); }
.button.secondary:hover { border-color: var(--teal-dark); background: #e8f2ff; }
.button.secondary-dark, .button.outline { color: var(--teal-deep); border-color: var(--teal-dark); background: var(--white); }
.button.secondary-light, .button.outline-light { color: var(--white); border-color: rgba(255,255,255,.28); background: transparent; }
.button.secondary-light:hover, .button.outline-light:hover { border-color: var(--teal); background: rgba(0, 174, 230, .1); }
.button.full { width: 100%; }

.hero-art { position: relative; min-height: 520px; display: grid; place-items: center; }
.hero-art-glow { position: absolute; width: 70%; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle, rgba(0, 174, 230, .22), transparent 66%); filter: blur(8px); }
.hero-art-panel { position: relative; width: min(480px, 100%); padding: 18px; border: 1px solid var(--border); border-radius: 20px; background: linear-gradient(145deg, rgba(255, 255, 255, .98), rgba(247, 250, 255, .98)); box-shadow: var(--shadow); transform: none; }
.hero-art-topline { display: flex; align-items: center; gap: 8px; color: var(--ink-soft); font-size: 9px; font-weight: 900; letter-spacing: .1em; }
.signal { width: 7px; height: 7px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 4px rgba(0, 174, 230, .12); }
.topline-tag { margin-left: auto; padding: 5px 7px; color: var(--gold); border: 1px solid rgba(243, 195, 76, .3); border-radius: 5px; font-size: 8px; }
.hero-art-title { margin: 33px 3px 21px; color: var(--ink); font-size: clamp(25px, 3vw, 35px); font-weight: 820; letter-spacing: -.05em; }
.loop-list { display: grid; gap: 9px; }
.loop-item { display: grid; grid-template-columns: 29px minmax(0, 1fr) 20px; gap: 10px; align-items: center; min-height: 64px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 11px; background: #ffffff; }
.loop-item.is-active { border-color: rgba(14, 95, 174, .35); background: #e8f2ff; }
.loop-item > span { color: var(--teal); font-size: 10px; font-weight: 900; }
.loop-item strong, .loop-item small { display: block; }
.loop-item strong { color: var(--ink); font-size: 13px; }
.loop-item small { margin-top: 3px; color: var(--ink-soft); font-size: 11px; }
.loop-item b { color: var(--teal-dark); font-size: 16px; font-weight: 500; }
.hero-art-foot { display: flex; justify-content: space-between; gap: 12px; margin-top: 20px; padding: 13px 4px 2px; border-top: 1px solid var(--border); color: var(--ink-soft); font-size: 10px; }
.hero-art-foot strong { color: var(--ink); font-weight: 760; }

.signal-strip { color: var(--white); background: var(--brand-blue); }
.signal-strip-inner { display: grid; grid-template-columns: repeat(4, 1fr); }
.signal-strip-inner > div { display: grid; gap: 3px; min-height: 114px; padding: 20px 20px 19px 0; border-right: 1px solid rgba(216, 250, 243, .17); }
.signal-strip-inner > div + div { padding-left: 20px; }
.signal-strip-inner > div:last-child { border-right: 0; }
.signal-strip strong { color: var(--gold); font-size: 11px; }
.signal-strip span { font-size: 13px; font-weight: 850; }
.signal-strip small { color: #d7e8f5; font-size: 11px; line-height: 1.4; }

.section { width: min(1180px, calc(100% - 48px)); margin-inline: auto; padding: clamp(76px, 9vw, 122px) 0; }
.section-heading { max-width: 720px; margin-bottom: 34px; }
.section-heading h2 { margin: 0; color: var(--ink); font-size: clamp(34px, 5vw, 63px); line-height: .98; letter-spacing: -.065em; }
.section-heading > p:not(.section-kicker) { margin: 21px 0 0; color: var(--muted-dark); font-size: 17px; }
.text-link { display: inline-flex; gap: 8px; align-items: center; margin-top: 20px; color: var(--teal-dark); font-size: 13px; font-weight: 900; text-decoration: none; }
.text-link:hover { color: var(--ink); }
.section-split { display: grid; grid-template-columns: minmax(0, .84fr) minmax(0, 1.16fr); gap: clamp(35px, 8vw, 120px); align-items: start; }
.section-split .section-heading { position: sticky; top: 115px; }
.feature-grid { display: grid; gap: 13px; }
.feature-grid-two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.feature-card, .notes-grid article, .lesson-grid article, .credit-price-card { border: 1px solid var(--border); border-radius: 15px; background: rgba(255,255,255,.7); box-shadow: var(--shadow); }
.feature-card { min-height: 210px; padding: 23px; }
.feature-card h3, .notes-grid h3, .lesson-grid h3 { margin: 0 0 10px; color: var(--ink); font-size: 19px; letter-spacing: -.035em; }
.feature-card p, .notes-grid p, .lesson-grid p { margin: 0; color: var(--muted-dark); font-size: 14px; }
.card-number { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 24px; margin-bottom: 45px; color: var(--teal-dark); border-bottom: 1px solid currentColor; font-size: 10px; font-weight: 950; }
.feature-card-dark { color: var(--white); border-color: transparent; background: var(--ink-soft); box-shadow: var(--shadow-dark); }
.feature-card-dark h3 { color: var(--white); }
.feature-card-dark p { color: #d7e8f5; }
.feature-card-dark .card-number { color: var(--teal); }
.feature-card-accent { border-color: rgba(0,174,230,.42); background: var(--mint); }

.multimodal-section { width: 100%; padding: 0; color: var(--ink); background: var(--surface-blue); }
.multimodal-panel { display: grid; grid-template-columns: minmax(0, .9fr) minmax(360px, 1.1fr); gap: 40px; align-items: center; width: min(1180px, calc(100% - 48px)); min-height: 600px; margin-inline: auto; padding: 90px 0; }
.light-heading h2 { color: var(--ink); }
.light-heading > p:not(.section-kicker) { color: var(--ink-soft); }
.input-orbit { position: relative; min-height: 390px; }
.input-orbit::before, .input-orbit::after { position: absolute; top: 50%; left: 50%; border: 1px solid rgba(0,174,230,.2); border-radius: 50%; transform: translate(-50%, -50%); content: ""; }
.input-orbit::before { width: 280px; height: 280px; }
.input-orbit::after { width: 390px; height: 390px; border-color: rgba(243,195,76,.12); }
.orbit-core { position: absolute; top: 50%; left: 50%; display: grid; place-items: center; width: 132px; height: 132px; border: 1px solid rgba(0,174,230,.75); border-radius: 50%; color: var(--ink); background: var(--teal); text-align: center; transform: translate(-50%, -50%); box-shadow: 0 0 70px rgba(0,174,230,.2); }
.orbit-core span { font-size: 10px; font-weight: 950; letter-spacing: .15em; }
.orbit-core strong { margin-top: -2px; font-size: 16px; line-height: 1.05; letter-spacing: -.04em; }
.orbit-chip { position: absolute; z-index: 1; padding: 12px 15px; border: 1px solid var(--border); border-radius: 9px; color: var(--ink); background: #ffffff; box-shadow: var(--shadow); font-size: 11px; font-weight: 850; }
.orbit-chip-one { top: 9%; left: 11%; }.orbit-chip-two { top: 20%; right: 3%; }.orbit-chip-three { right: 13%; bottom: 8%; }.orbit-chip-four { bottom: 22%; left: 2%; }

.youtube-gallery { padding-bottom: 80px; }
.youtube-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.youtube-heading .section-heading { margin: 0; max-width: 760px; }
.youtube-heading .button { flex-shrink: 0; }
.youtube-card { display: block; min-width: 0; overflow: hidden; color: var(--ink); border: 1px solid var(--border); border-radius: 16px; background: var(--white); box-shadow: var(--shadow); text-decoration: none; }
.youtube-card:hover { border-color: var(--brand-blue); }
.youtube-card:focus-visible { outline: 3px solid var(--brand-blue); outline-offset: 4px; }
.youtube-featured { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); align-items: center; }
.youtube-thumbnail { position: relative; display: block; aspect-ratio: 16 / 9; overflow: hidden; background: #061518; }
.youtube-thumbnail > img:first-child { display: block; width: 100%; height: 100%; object-fit: cover; }
.youtube-thumbnail-short { aspect-ratio: 9 / 16; }
.youtube-format { position: absolute; top: 12px; left: 12px; padding: 5px 9px; color: white; border-radius: 6px; background: rgb(6 21 24 / 80%); font-size: 11px; font-weight: 850; }
.youtube-thumbnail .youtube-play { position: absolute; left: 50%; top: 50%; width: 56px; height: 56px; transform: translate(-50%, -50%); filter: drop-shadow(0 2px 8px rgb(0 0 0 / 35%)); }
.youtube-card-body { display: grid; gap: 10px; padding: 20px; }
.youtube-featured .youtube-card-body { padding: clamp(22px, 4vw, 48px); }
.youtube-card .card-kicker { color: var(--brand-blue); font-size: 10px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.youtube-card h3 { margin: 0; font-size: 18px; line-height: 1.25; letter-spacing: -.03em; }
.youtube-featured h3 { font-size: clamp(25px, 3.3vw, 42px); }
.youtube-description { color: var(--muted-dark); font-size: 15px; }
.youtube-watch { margin-top: 5px; color: var(--brand-blue); font-size: 12px; font-weight: 850; }
.youtube-shorts-title { margin: 36px 0 18px; font-size: 23px; letter-spacing: -.035em; }
.youtube-shorts-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; align-items: start; }
@media (max-width: 950px) { .youtube-heading { align-items: start; flex-direction: column; }.youtube-shorts-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 620px) { .youtube-featured { grid-template-columns: 1fr; }.youtube-shorts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }.youtube-card-body { padding: 14px; }.youtube-card h3 { font-size: 16px; }.youtube-featured h3 { font-size: 27px; }.youtube-heading .button { max-width: 100%; white-space: normal; text-align: center; } }




.pricing-section { width: 100%; max-width: none; padding-inline: max(24px, calc((100% - 1180px) / 2)); background: #eff7ff; }.pricing-section .section-heading, .pricing-section .credit-pricing { width: min(1180px, 100%); margin-inline: auto; }.credit-pricing { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px; }.credit-price-card { padding: 26px; }.credit-price-card h3 { margin: 0; color: var(--ink); font-size: clamp(38px, 5vw, 65px); line-height: .95; letter-spacing: -.07em; }.credit-price-card h3 small { color: var(--muted-dark); font-size: 14px; font-weight: 750; letter-spacing: 0; }.credit-price-card p { min-height: 72px; margin: 18px 0 24px; color: var(--muted-dark); font-size: 14px; }.credit-price-card-dark { color: var(--white); border-color: transparent; background: var(--ink-soft); box-shadow: var(--shadow-dark); }.credit-price-card-dark h3 { color: var(--white); }.credit-price-card-dark h3 small, .credit-price-card-dark p { color: #d7e8f5; }.credit-price-card-dark .price-tag { color: var(--teal); }

.final-cta { padding-top: 78px; padding-bottom: 100px; }.cta-panel { display: flex; align-items: end; justify-content: space-between; gap: 28px; padding: clamp(28px, 5vw, 54px); color: var(--white); border-radius: 18px; background: radial-gradient(circle at 90% 20%, rgba(0,174,230,.24), transparent 34%), var(--ink); box-shadow: var(--shadow-dark); }.cta-panel h2 { max-width: 640px; margin: 0; color: var(--white); font-size: clamp(30px, 4vw, 52px); line-height: 1; letter-spacing: -.06em; }.cta-panel .section-kicker { margin-bottom: 17px; }.cta-actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: flex-end; }

.media-hero { padding: clamp(70px, 9vw, 110px) 0 75px; color: var(--white); background: radial-gradient(circle at 85% 18%, rgba(0,174,230,.2), transparent 33%), var(--ink); }.media-hero-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(300px, .75fr); gap: 60px; align-items: end; }.media-hero h1 { max-width: 820px; margin: 0; font-size: clamp(48px, 7vw, 86px); line-height: .94; letter-spacing: -.075em; }.media-hero-copy { max-width: 680px; margin: 24px 0 0; color: #d7e8f5; font-size: 19px; }.media-hero-note { padding: 24px; border: 1px solid rgba(0,174,230,.3); border-radius: 15px; background: rgba(0,174,230,.07); }.note-label { display: block; margin-bottom: 40px; color: var(--gold); font-size: 10px; font-weight: 950; letter-spacing: .13em; text-transform: uppercase; }.media-hero-note strong { display: block; color: var(--white); font-size: 23px; letter-spacing: -.045em; }.media-hero-note p { margin: 9px 0 0; color: #d7e8f5; font-size: 13px; }.media-section { padding-top: 80px; }.media-section .section-heading { max-width: 800px; }.media-player { margin: 0; padding: 14px; border: 1px solid var(--border); border-radius: 17px; background: var(--white); box-shadow: var(--shadow); }.media-player video { display: block; width: 100%; max-height: 680px; border-radius: 10px; background: #061518; }.media-player figcaption { padding: 13px 5px 2px; color: var(--muted-dark); font-size: 12px; font-weight: 750; }.watch-notes, .lesson-outline { padding-top: 15px; }.notes-grid, .lesson-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 13px; }.notes-grid article, .lesson-grid article { min-height: 190px; padding: 23px; }.notes-grid span, .lesson-grid span { display: block; margin-bottom: 38px; color: var(--teal-dark); font-size: 11px; font-weight: 950; }.lesson-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }.transcript-download, .document-fallback { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 17px; margin-top: 19px; padding: 16px 19px; border: 1px solid var(--border); border-radius: 11px; color: var(--muted-dark); background: rgba(255,255,255,.54); font-size: 13px; font-weight: 750; }.transcript-download .text-link, .document-fallback .text-link { margin: 0; }.media-cta { padding-top: 35px; }

.site-footer { padding: 55px max(24px, calc((100% - 1180px) / 2)) 22px; color: var(--ink); background: var(--surface-blue); border-top: 1px solid var(--border); }.footer-main { display: grid; grid-template-columns: minmax(220px, .75fr) minmax(0, 1.25fr); gap: 50px; }.footer-brand { margin-bottom: 18px; }.footer-note { max-width: 305px; margin: 0; color: var(--ink-soft); font-size: 12px; }.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; }.footer-links div { display: grid; align-content: start; gap: 10px; }.footer-links strong { margin-bottom: 3px; color: var(--teal-dark); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }.footer-links a { color: #344b68; font-size: 12px; font-weight: 700; text-decoration: none; }.footer-links a:hover { color: var(--teal-dark); }.footer-bottom { display: flex; justify-content: space-between; gap: 15px; margin-top: 45px; padding-top: 17px; color: var(--ink-soft); border-top: 1px solid var(--border); font-size: 11px; }

/* Account and policy pages retain the same brand system. */
.auth-main, .policy-main { width: min(1120px, calc(100% - 48px)); margin-inline: auto; padding: 75px 0 110px; }.auth-card { display: grid; gap: 18px; }.auth-card.narrow { width: min(560px, 100%); margin-inline: auto; }.section-heading.compact { margin-bottom: 8px; }.section-heading.compact h1, .policy-card h1 { margin: 0; color: var(--ink); font-size: clamp(38px, 6vw, 70px); line-height: .98; letter-spacing: -.07em; }.section-heading.compact > p:not(.section-kicker) { color: var(--muted-dark); }.registration-preview { display: grid; gap: 2px; }.registration-preview .section-heading h2 { font-size: clamp(28px, 4vw, 46px); }.registration-form, .login-form, .payment-panel { display: grid; gap: 14px; padding: 25px; border: 1px solid var(--border); border-radius: 15px; background: var(--white); box-shadow: var(--shadow); }.registration-form fieldset { display: grid; gap: 14px; min-width: 0; padding: 0; border: 0; }.registration-form fieldset:disabled { opacity: .68; }.registration-form label, .login-form label { display: grid; gap: 7px; color: var(--ink); font-size: 13px; font-weight: 850; }.registration-form input, .registration-form textarea, .registration-form select, .login-form input { width: 100%; padding: 12px 13px; color: var(--ink); border: 1px solid #d8e2ef; border-radius: 9px; outline: 0; background: #fff; }.registration-form input:focus, .login-form input:focus { border-color: var(--teal-dark); box-shadow: 0 0 0 3px rgba(0,174,230,.18); }.form-grid { display: grid; gap: 12px; }.form-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }.form-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }.password-hint { margin: 0; color: var(--muted-dark); font-size: 12px; line-height: 1.5; }.is-hidden { display: none !important; }.otp-panel { margin-top: 10px; }.check-line { grid-template-columns: auto 1fr !important; align-items: start; font-weight: 700 !important; }.check-line input { width: auto; margin-top: 4px; }.form-status { min-height: 24px; margin: 0; color: var(--muted-dark); font-weight: 800; }.form-status.is-error { color: var(--coral); }.form-status.is-success { color: var(--teal-dark); }.balance-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }.balance-grid article { display: grid; gap: 8px; min-height: 130px; padding: 18px; border: 1px solid var(--border); border-radius: 13px; background: var(--white); box-shadow: var(--shadow); }.balance-grid span { color: var(--muted-dark); font-size: 12px; font-weight: 800; }.balance-grid strong { color: var(--teal-dark); font-size: 27px; }.account-products { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }.policy-card { padding: clamp(25px, 5vw, 52px); border: 1px solid var(--border); border-radius: 15px; background: var(--white); box-shadow: var(--shadow); }.policy-card h2 { margin-top: 34px; color: var(--ink); font-size: clamp(24px, 3vw, 34px); letter-spacing: -.04em; }.policy-card p, .policy-card li { color: var(--muted-dark); }.policy-card ul { padding-left: 20px; }.policy-card .back-link { display: inline-flex; margin-bottom: 22px; color: var(--teal-dark); font-size: 13px; font-weight: 900; text-decoration: none; }

@media (max-width: 950px) { .hero-grid, .section-split, .multimodal-panel, .media-hero-grid { grid-template-columns: 1fr; }.section-split .section-heading { position: static; }.hero-art { min-height: 430px; }.evidence-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }.evidence-card-featured { grid-column: 1 / -1; }.lesson-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }.footer-main { grid-template-columns: 1fr; }.footer-links { max-width: 650px; } }
@media (max-width: 720px) { .section-shell, .section, .multimodal-panel, .auth-main, .policy-main { width: min(100% - 30px, 1180px); }.site-header { min-height: 67px; padding-inline: 15px; }.menu-button { display: inline-flex; }.site-nav { position: absolute; top: calc(100% + 7px); right: 15px; left: 15px; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 7px; border: 1px solid var(--border); border-radius: 13px; background: rgba(255,255,255,.98); box-shadow: var(--shadow); }.site-nav.is-open { display: flex; }.site-nav a, .site-nav .nav-action { margin: 0; padding: 13px 14px; border-radius: 8px; }.site-nav .nav-action { margin-top: 4px; text-align: center; }.site-announcement { justify-content: space-between; gap: 7px; padding-inline: 13px; font-size: 10px; }.site-announcement a { margin-left: 0; }.hero { padding-top: 68px; }.hero h1 { font-size: clamp(47px, 15vw, 78px); }.hero-art { min-height: 360px; }.hero-art-panel { transform: none; }.signal-strip-inner { grid-template-columns: repeat(2, 1fr); }.signal-strip-inner > div { min-height: 106px; border-bottom: 1px solid rgba(255,255,255,.22); }.signal-strip-inner > div:nth-child(2) { border-right: 0; }.signal-strip-inner > div:nth-child(3), .signal-strip-inner > div:nth-child(4) { border-bottom: 0; }.signal-strip-inner > div + div { padding-left: 13px; }.signal-strip-inner > div { padding-right: 13px; }.feature-grid-two, .evidence-grid, .notes-grid, .lesson-grid, .credit-pricing, .account-products, .form-grid.two, .form-grid.three { grid-template-columns: 1fr; }.evidence-card-featured { grid-column: auto; }.evidence-heading { display: block; }.input-orbit { min-height: 340px; transform: scale(.82); transform-origin: center; }.cta-panel { display: grid; align-items: start; }.cta-actions { justify-content: flex-start; }.footer-links { grid-template-columns: repeat(2, 1fr); }.footer-bottom { display: grid; }.document-viewer iframe { min-height: 480px; height: 130vw; }.office-viewer-wrap { min-height: 430px; }.office-viewer-wrap iframe { height: 500px; }.media-player { padding: 8px; }.media-hero h1 { font-size: clamp(45px, 13vw, 72px); }.media-hero-copy { font-size: 17px; } }
@media (max-width: 360px) { .multimodal-section { overflow: clip; }.input-orbit::after { width: 320px; height: 320px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; }.button { transition: none; }.button:hover { transform: none; } }

@media (max-width: 720px) { .brand-logo { width: 110px; height: 54px; padding: 0; }.brand small { display: none; } }

@media (max-width: 720px) {
  .balance-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .balance-grid > article:first-child { grid-column: 1 / -1; }
  .balance-grid article { min-width: 0; min-height: 104px; padding: 14px; }
  .balance-grid span { line-height: 1.35; }
  .balance-grid strong { min-width: 0; font-size: clamp(18px, 5vw, 25px); line-height: 1.18; overflow-wrap: anywhere; }
  .auth-card, .auth-main { min-width: 0; }
}

@media (orientation: landscape) and (max-width: 900px) {
  .site-header { min-height: 58px; padding: 6px 14px; }
  .brand-logo { width: 118px; height: 56px; }
  .menu-button { display: inline-flex; }
  .site-nav { position: absolute; top: calc(100% + 7px); right: 14px; left: 14px; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 7px; border: 1px solid var(--border); border-radius: 13px; background: rgba(255,255,255,.98); box-shadow: var(--shadow); }
  .site-nav.is-open { display: flex; }
  .site-nav a, .site-nav .nav-action { margin: 0; padding: 10px 12px; border-radius: 8px; }
  .site-nav .nav-action { margin-top: 4px; text-align: center; }
  .auth-main, .policy-main { padding-top: 28px; padding-bottom: 42px; }
  .section-heading.compact h1 { font-size: clamp(34px, 6vw, 50px); }
  .section-heading.compact > p:not(.section-kicker) { margin-top: 12px; font-size: 15px; }
}

.registration-form .check-line { grid-template-columns: auto minmax(0, 1fr) !important; gap: 10px; align-items: start; }
.registration-form .check-line input { width: auto; margin-top: 3px; }
.registration-form .check-line span { min-width: 0; line-height: 1.5; }
.registration-form .check-line { color: var(--ink); opacity: 1; }
.registration-form .check-line input { appearance: none; width: 18px; height: 18px; margin: 2px 0 0; border: 2px solid var(--teal-dark); border-radius: 4px; background: #fff; cursor: pointer; }
.registration-form .check-line input:checked { background-color: var(--teal-dark); background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 8.5 6.5 12 13 4.5' fill='none' stroke='white' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); background-position: center; background-repeat: no-repeat; background-size: 14px 14px; }
.registration-form .check-line input:focus-visible { outline: 3px solid rgba(0,174,230,.35); outline-offset: 2px; }

/* Keep shared branding and mobile controls consistent with the web app. */
.menu-button { color: var(--ink); border-color: var(--line-strong); background: var(--white); }
.feature-card-dark, .credit-price-card-dark { background: var(--brand-navy); }
.feature-card-dark p, .credit-price-card-dark h3 small, .credit-price-card-dark p { color: #d7e8f5; }
.footer-brand .brand-logo { width: 166px; height: 81px; }
@media (max-width: 720px) {
  .footer-brand .brand-logo { width: 110px; height: 54px; }
  .site-nav { border-color: var(--border); background: rgba(255,255,255,.98); box-shadow: var(--shadow); }
}.eyebrow, .section-kicker, .card-kicker, .price-tag { color: var(--brand-blue); }
.cta-panel .section-kicker, .media-hero .section-kicker, .feature-card-dark .card-kicker { color: var(--brand-cyan); }
.topline-tag { color: var(--brand-blue); border-color: rgba(14,95,174,.25); }
.offer-ribbon { border-left-color: var(--brand-blue); }
.offer-ribbon strong { color: var(--brand-blue); }

/* Account and registration flow refinements. */
.auth-switch { margin: 0; color: var(--muted-dark); text-align: center; font-size: 14px; }
.auth-switch a { color: var(--teal-dark); font-weight: 850; }
.login-form .link-button { justify-self: center; padding: 4px 8px; color: var(--teal-dark); text-decoration: underline; }
.login-form button:disabled { opacity: .65; cursor: wait; }
.login-form .form-status { min-height: 1.25em; }
.pricing-note { max-width: 760px; margin: 20px auto 0; color: var(--muted-dark); text-align: center; font-size: 13px; line-height: 1.6; }
.pricing-note a { color: var(--teal-dark); font-weight: 800; }
@media (max-width: 520px) { .auth-main, .policy-main { padding-top: 38px; padding-bottom: 64px; } .login-form { padding: 18px; } }
.billing-main { width: min(1160px, calc(100% - 32px)); margin-inline: auto; }
.billing-card { width: 100%; max-width: 1080px; }
.billing-section { padding-block: 24px; border-bottom: 1px solid var(--border, #d8e1ed); }
.billing-section h2 { margin-top: 0; }
.billing-section fieldset { border: 1px solid var(--border, #d8e1ed); border-radius: 14px; padding: 16px; margin: 16px 0; }
.grade-choices { display: flex; flex-wrap: wrap; gap: 12px 20px; }
.grade-choices label { display: flex; align-items: center; gap: 8px; padding: 8px 10px; background: #edf5ff; border-radius: 8px; }
.grade-choices input, .billing-card .check-line input { width: 19px; height: 19px; flex: 0 0 auto; accent-color: #0759b5; }
.billing-card .check-line { display: grid; grid-template-columns: 20px minmax(0, 1fr); align-items: start; gap: 12px; margin: 20px 0; line-height: 1.6; }
.billing-total { font-size: 1.2rem; }
.payment-notice { background: #e9f5ef; border-left: 4px solid #19784a; padding: 16px; border-radius: 8px; }
.payment-test-mode { background: #fff4da; border-color: #a86900; color: #5a3900; }
.pending-checkout { border: 1px solid var(--border, #d8e1ed); padding: 14px; margin: 12px 0; border-radius: 10px; overflow-wrap: anywhere; }
.policy-card { overflow-wrap: anywhere; }
.policy-card h2 { scroll-margin-top: 100px; }
@media (max-width: 640px) { .billing-main { width: calc(100% - 20px); } .grade-choices { gap: 8px; } .billing-card .button { white-space: normal; } }

/* Contact and experience feedback form. */
.contact-email { margin: 18px 0 30px; }
.contact-email a, .contact-form-hint a { color: var(--teal-dark); font-weight: 850; }
.contact-feedback { margin-top: 36px; padding-top: 8px; }
.contact-feedback h2 { margin-bottom: 10px; }
.contact-form { display: grid; gap: 17px; margin-top: 20px; padding: clamp(18px, 4vw, 28px); border: 1px solid var(--border); border-radius: 14px; background: var(--panel-2); }
.contact-form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.contact-form > label, .contact-form-grid > label { display: grid; gap: 7px; color: var(--ink); font-size: 14px; font-weight: 800; }
.contact-form input:not([type="radio"]), .contact-form select, .contact-form textarea { width: 100%; min-width: 0; padding: 12px 13px; color: var(--ink); border: 1px solid var(--line-strong); border-radius: 9px; background: var(--white); font: inherit; font-weight: 500; }
.contact-form textarea { min-height: 145px; resize: vertical; line-height: 1.55; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { border-color: var(--teal-dark); outline: 0; box-shadow: 0 0 0 3px rgba(0,174,230,.18); }
.optional-label, .contact-form-hint { color: var(--muted-dark); font-size: 12px; font-weight: 500; }
.contact-rating { min-width: 0; margin: 0; padding: 14px 16px; border: 1px solid var(--line); border-radius: 10px; background: var(--white); }
.contact-rating legend { padding: 0 5px; color: var(--ink); font-size: 14px; font-weight: 850; }
.contact-rating legend > span { color: var(--coral); }
.contact-stars { display: flex; flex-direction: row-reverse; justify-content: flex-end; width: max-content; max-width: 100%; gap: 4px; }
.contact-stars input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; clip-path: inset(50%); }
.contact-stars label { display: inline-flex; min-width: 42px; min-height: 44px; align-items: center; justify-content: center; color: #a8b5c3; cursor: pointer; font-size: 34px; line-height: 1; transition: color .15s ease, transform .15s ease; }
.contact-stars label:hover, .contact-stars label:hover ~ label, .contact-stars input:checked + label, .contact-stars input:checked + label ~ label { color: #e6a600; }
.contact-stars label:hover { transform: translateY(-2px); }
.contact-stars input:focus-visible + label { outline: 3px solid var(--brand-cyan); outline-offset: 2px; border-radius: 4px; }
.contact-form-hint { margin: 6px 0 0; line-height: 1.5; }
.contact-form .button { justify-self: start; }
.visually-hidden { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important; }
@media (max-width: 600px) {
  .contact-form-grid { grid-template-columns: minmax(0, 1fr); }
  .contact-stars { gap: 1px; }
  .contact-stars label { min-width: 38px; font-size: 31px; }
  .contact-form .button { width: 100%; justify-content: center; white-space: normal; }
}