:root {
    --font-display: "Sentient", Georgia, "Times New Roman", serif;
    --font-heading: "Sentient", Georgia, "Times New Roman", serif;
    --font-body: "Twentieth Century", system-ui, sans-serif;
    --radius-card: 0;
    --radius-control: 0.625rem;
}

html, body { font-family: var(--font-body); }
h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: 300; }
.eyebrow { color: var(--colour-accent); font-family: var(--font-body); font-weight: 700; letter-spacing: 0.16em; }
.button { border-radius: var(--radius-control); }
.site-header { background: var(--colour-quiet); }
.site-rail__links a > span:first-child img { width: 1rem; height: 1rem; }
.site-rail__group h2 { font-weight: 300; }
.site-footer { margin-top: 0; background: #2B2A29; }
.site-footer__wordmark { background: var(--colour-quiet); opacity: 0.72; -webkit-mask-image: url("../images/brand/is-wordmark.svg"); mask-image: url("../images/brand/is-wordmark.svg"); }
.site-footer__identity p, .site-footer__legal p { color: var(--colour-quiet); opacity: 0.82; }

.wrapper-header { position: relative; z-index: 30; width: 100%; border-bottom: 1px solid var(--tis-divider, #d8d0c8); background: var(--tis-cream, #f8f4f0); }
.wrapper-header__inner { width: min(100%, 1440px); min-height: 82px; margin: 0 auto; padding: 0 40px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.wrapper-header__brand { width: 174px; flex: 0 0 auto; }
.wrapper-header__brand img { width: 100%; height: auto; }
.wrapper-header__desktop { display: flex; align-items: center; gap: 28px; }
.wrapper-header__desktop a, .wrapper-header__mobile nav a { color: var(--colour-ink); font-size: 0.78rem; font-weight: 600; letter-spacing: 0.035em; text-decoration: none; }
.wrapper-header__desktop a:hover, .wrapper-header__mobile nav a:hover { text-decoration: underline; text-decoration-color: var(--colour-accent); text-underline-offset: 0.3rem; }
.wrapper-header__cta { min-height: 44px; padding: 0.72rem 1.1rem; display: inline-flex; align-items: center; justify-content: center; border-radius: var(--radius-control); background: var(--colour-accent); color: var(--colour-primary-button-text) !important; text-transform: uppercase; }
.wrapper-header__cta:hover { background: var(--colour-accent-hover); text-decoration: none !important; }
.wrapper-header__mobile { display: none; }

.home-template > main, .home-template > .site-footer { margin-left: 0; }
.home-template .site-footer { width: 100%; margin-top: 0; background: #2B2A29; }

.tis { color: var(--tis-black); font-family: var(--tis-text); }
.tis-wrapper-home { width: 100%; max-width: none; margin: 0; }
.tis-library-home, .tis-interior-page, .tis-course-page, .tis-course-directory { width: min(100%, 1280px); margin: 0 auto; }
.tis-motion { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.tis-wrapper-hero__copy, .tis-wrapper-closing__copy { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: flex-start; gap: 26px; }
.tis-wrapper-hero::after { content: ""; position: absolute; inset: 0; z-index: 0; background: linear-gradient(to right, var(--tis-cream) 0%, var(--tis-cream) 38%, rgba(248,244,240,0.55) 58%, rgba(248,244,240,0) 78%); pointer-events: none; }
.tis-wrapper-hero:not(:has(video))::after { display: none; }
.tis-wrapper-library > .tis-h2 { margin-top: 10px; margin-bottom: 34px; }
.tis-wrapper-library .tis-card img { width: 30px; height: 30px; }
.tis-leaf--placeholder { min-height: 420px; display: grid; place-items: center; color: var(--tis-muted); font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase; }
.tis-wrapper-editorial .tis-leaf { min-height: 420px; }
.tis-wrapper-closing__copy { justify-content: flex-end; }
.tis-wrapper-closing .tis-h2 { max-width: 16em; }
.tis-access { padding: 52px 56px; display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 40px; background: var(--tis-stone); }
.tis-access__copy { display: flex; flex-direction: column; gap: 14px; }
.tis-access .tis-lead { max-width: 46em; font-size: 17px; }
.tis-access .tis-actions { justify-content: flex-end; }
.tis-wrapper-closing { width: 100%; background-color: #2B2A29; }

.tis-library-intro { position: relative; overflow: hidden; min-height: 470px; padding: 72px 56px; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; gap: 22px; background: var(--tis-cream) url("../images/brand/hero-cream.png") center / cover no-repeat; }
.tis-library-intro .tis-h1 { max-width: 13em; }
.tis-library-search { width: min(100%, 680px); min-height: 54px; padding: 0.75rem 1rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; border: 1px solid var(--tis-divider); border-radius: 10px; background: var(--tis-paper); color: var(--tis-body); cursor: pointer; text-align: left; }
.tis-library-section { padding: 56px; }
.tis-section-heading { margin-bottom: 28px; display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; }
.tis-section-heading .tis-eyebrow { margin-bottom: 10px; }
.tis-section-heading > a { color: var(--tis-black); font-weight: 700; text-decoration-color: var(--tis-orange); }
.tis-library-explore { background-color: var(--tis-paper); background-image: repeating-linear-gradient(to bottom, var(--tis-rule) 0, var(--tis-rule) 1px, transparent 1px, transparent 28px); }
.tis-library-explore .subject-route-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.tis-library-explore .subject-route { border-radius: 0; background: var(--tis-paper); }
.tis-library-explore .subject-route__name { font-size: 0.72rem; }
.tis-library-explore .subject-route__mark img { width: 1.65rem; height: 1.65rem; }
.tis-library-new { background: var(--tis-cream); }
.tis-library-new .featured-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.tis-library-watch { background: var(--tis-paper); }
.tis-library-watch .watch-feature { border-radius: 0; }
.tis-library-learning { padding: 64px 56px; }
.tis-course-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.tis-course-card { min-width: 0; background: var(--tis-paper); border: 1px solid var(--tis-divider); }
.tis-course-card__media { position: relative; display: block; aspect-ratio: 4 / 3; overflow: hidden; background: var(--tis-lilac); }
.tis-course-card:nth-child(2) .tis-course-card__media { background: var(--tis-orange); }
.tis-course-card:nth-child(3) .tis-course-card__media { background: var(--tis-ground-black); }
.tis-course-card__media::after { content: ""; position: absolute; width: 55%; aspect-ratio: 1; top: -18%; right: -12%; border-radius: 52% 48% 58% 42%; background: rgba(255,255,255,0.24); transform: rotate(-18deg); }
.tis-course-card__media img { position: relative; z-index: 1; width: 100%; height: 100%; object-fit: cover; }
.tis-course-card__body { padding: 24px; }
.tis-course-card__body h3 { margin: 8px 0 12px; font-size: 1.55rem; }
.tis-course-card__body > p:not(.tis-eyebrow) { color: var(--tis-body); line-height: 1.5; }
.tis-course-card__link { color: var(--tis-black); font-weight: 700; text-decoration-color: var(--tis-orange); }
.tis-library-work .tis-leaf { min-height: 440px; }

.tis-interior-hero, .tis-course-hero { margin-top: 24px; }
.tis-interior-content, .tis-course-content { padding-top: 72px; padding-bottom: 72px; }
.tis-interior-content .article-content, .tis-course-content .article-content { width: min(100%, 760px); margin: 0 auto; }
.tis-course-directory__header { padding-top: 72px; padding-bottom: 72px; }
.tis-course-directory__header .tis-lead { margin-top: 20px; }
.tis-course-directory__list { padding: 56px; background: var(--tis-cream); }

@media (max-width: 800px) {
    .wrapper-header__inner { min-height: 70px; padding: 0 20px; }
    .wrapper-header__brand { width: min(160px, 48vw); }
    .wrapper-header__desktop { display: none; }
    .wrapper-header__mobile { position: static; display: block; margin-left: auto; }
    .wrapper-header__mobile > summary { width: 44px; height: 44px; display: grid; place-items: center; cursor: pointer; list-style: none; }
    .wrapper-header__mobile > summary::-webkit-details-marker { display: none; }
    .wrapper-header__mobile > summary > span { width: 21px; display: grid; gap: 4px; }
    .wrapper-header__mobile > summary > span > span { height: 1.5px; background: var(--colour-ink); }
    .wrapper-header__mobile nav { position: absolute; top: 100%; left: 0; right: 0; padding: 14px 20px 22px; display: grid; border-bottom: 3px solid var(--colour-ink); background: #f8f4f0; box-shadow: 0 14px 28px rgba(54,54,54,0.14); }
    .wrapper-header__mobile nav a { min-height: 50px; display: flex; align-items: center; border-bottom: 1px solid #d8d0c8; font-family: var(--font-display); font-size: 1.25rem; font-weight: 300; }
    .wrapper-header__mobile nav .wrapper-header__cta { margin-top: 14px; border-bottom: 0; font-family: var(--font-body); font-size: 0.78rem; font-weight: 700; }
    .tis-wrapper-hero::after { background: linear-gradient(to bottom, var(--tis-cream) 0%, rgba(248,244,240,0.88) 68%, rgba(248,244,240,0.3) 100%); }
    .tis-access { padding: 40px 24px; grid-template-columns: 1fr; gap: 24px; }
    .tis-access .tis-actions { justify-content: flex-start; }
    .tis-leaf--placeholder, .tis-wrapper-editorial .tis-leaf, .tis-library-work .tis-leaf { min-height: 280px; }
    .tis-library-intro { min-height: 420px; padding: 56px 24px 64px; }
    .tis-library-section { padding: 40px 24px; }
    .tis-section-heading { align-items: flex-start; flex-direction: column; gap: 12px; }
    .tis-library-explore .subject-route-grid { display: flex; margin-right: -24px; padding-right: 40px; overflow-x: auto; }
    .tis-library-explore .subject-route { flex: 0 0 140px; }
    .tis-library-new .featured-grid, .tis-course-grid { grid-template-columns: 1fr; }
    .tis-library-learning, .tis-course-directory__header { padding: 48px 24px; }
    .tis-course-directory__list { padding: 40px 24px; }
}

@media (max-width: 560px) {
    .tis-access .tis-actions { align-items: stretch; flex-direction: column; }
    .tis-access .tis-btn { width: 100%; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
    .tis-motion { display: none; }
}