:root[data-wms-theme="profthaiscastro"] {
    --ptc-purple: #6d4c9a;
    --ptc-purple-strong: #553779;
    --ptc-purple-soft: #eee9f5;
    --ptc-navy: #28324a;
    --ptc-navy-soft: #44506a;
    --ptc-gold: #d99152;
    --ptc-gold-soft: #f6e7d7;
    --ptc-cream: #fbfaf7;
    --ptc-paper: #f4f0e8;
    --ptc-surface: #ffffff;
    --ptc-ink: #202536;
    --ptc-muted: #697087;
    --ptc-line: #ded8e6;
    --ptc-success: #287a52;
    --ptc-shadow: 0 24px 70px rgba(40, 50, 74, .11);
    --ptc-shadow-soft: 0 12px 35px rgba(40, 50, 74, .08);
    --ptc-radius-sm: .75rem;
    --ptc-radius-md: 1.2rem;
    --ptc-radius-lg: 2rem;
    --ptc-container: 1180px;
    --wms-color-primary: var(--ptc-purple);
    --wms-color-secondary: var(--ptc-navy);
    --wms-color-accent: var(--ptc-gold);
    --wms-color-background: var(--ptc-cream);
    --wms-color-surface: var(--ptc-surface);
    --wms-color-text: var(--ptc-ink);
}

:root[data-wms-theme="profthaiscastro"][data-wms-mode="dark"] {
    --ptc-purple: #b79bd9;
    --ptc-purple-strong: #d1bde8;
    --ptc-purple-soft: #2e2939;
    --ptc-navy: #e5e9f4;
    --ptc-navy-soft: #bcc5d9;
    --ptc-gold: #efa966;
    --ptc-gold-soft: #3b3027;
    --ptc-cream: #171922;
    --ptc-paper: #20232d;
    --ptc-surface: #242731;
    --ptc-ink: #f4f5f8;
    --ptc-muted: #adb5c7;
    --ptc-line: #3b3f4d;
    --ptc-shadow: 0 24px 70px rgba(0, 0, 0, .3);
    --ptc-shadow-soft: 0 12px 35px rgba(0, 0, 0, .22);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.ptc-body { margin: 0; background: var(--ptc-cream); color: var(--ptc-ink); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.65; }
body.ptc-body::selection { background: var(--ptc-purple); color: #fff; }
.ptc-body img { display: block; max-width: 100%; }
.ptc-body a { color: inherit; }
.ptc-container { width: min(calc(100% - 2.5rem), var(--ptc-container)); margin-inline: auto; }
.ptc-main { min-height: 65vh; }
.ptc-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; }

.ptc-site-header { position: sticky; top: 0; z-index: 60; background: color-mix(in srgb, var(--ptc-surface) 94%, transparent); border-bottom: 1px solid var(--ptc-line); backdrop-filter: blur(18px); transition: box-shadow .2s ease; }
.ptc-site-header.is-scrolled { box-shadow: 0 10px 30px rgba(40, 50, 74, .08); }
.ptc-academic-bar { background: var(--ptc-navy); color: #fff; font-size: .76rem; letter-spacing: .04em; }
.ptc-academic-bar__inner { min-height: 2.2rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.ptc-academic-bar a { color: #fff; font-weight: 700; text-underline-offset: .2em; }
.ptc-header-main { min-height: 5.4rem; display: flex; align-items: center; gap: 1.5rem; }
.ptc-brand { min-width: 13.5rem; display: inline-flex; align-items: center; gap: .8rem; text-decoration: none; }
.ptc-brand__mark, .ptc-brand .wms-brand__visual { width: 2.8rem; height: 2.8rem; flex: 0 0 auto; border-radius: .85rem; }
.ptc-brand__copy { display: grid; line-height: 1.15; }
.ptc-brand__copy strong { font-family: Georgia, "Times New Roman", serif; color: var(--ptc-navy); font-size: 1.1rem; }
.ptc-brand__copy small { margin-top: .25rem; color: var(--ptc-muted); font-size: .69rem; line-height: 1.25; }
.ptc-primary-nav { margin-left: auto; display: flex; align-items: center; gap: .25rem; }
.ptc-primary-nav a { position: relative; padding: .7rem .72rem; border-radius: .65rem; color: var(--ptc-navy-soft); text-decoration: none; font-size: .87rem; font-weight: 720; white-space: nowrap; }
.ptc-primary-nav a:hover { background: var(--ptc-purple-soft); color: var(--ptc-purple-strong); }
.ptc-primary-nav a[aria-current="page"] { color: var(--ptc-purple-strong); }
.ptc-primary-nav a[aria-current="page"]::after { content: ""; position: absolute; left: .72rem; right: .72rem; bottom: .28rem; height: 2px; background: var(--ptc-gold); border-radius: 999px; }
.ptc-header-actions { display: flex; align-items: center; gap: .65rem; }
.ptc-icon-button { width: 2.65rem; height: 2.65rem; display: inline-grid; place-items: center; border: 1px solid var(--ptc-line); border-radius: 50%; background: var(--ptc-surface); color: var(--ptc-navy); cursor: pointer; }
.ptc-icon-button:hover { border-color: var(--ptc-purple); color: var(--ptc-purple); }
.ptc-menu-toggle { display: none; width: 2.7rem; height: 2.7rem; padding: .65rem; border: 1px solid var(--ptc-line); border-radius: .7rem; background: var(--ptc-surface); cursor: pointer; }
.ptc-menu-toggle > span:not(.ptc-visually-hidden) { display: block; height: 2px; margin: 4px 0; background: var(--ptc-navy); transition: transform .2s ease, opacity .2s ease; }
.ptc-menu-toggle[aria-expanded="true"] > span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.ptc-menu-toggle[aria-expanded="true"] > span:nth-child(2) { opacity: 0; }
.ptc-menu-toggle[aria-expanded="true"] > span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.ptc-mobile-nav { padding: 1rem 1.25rem 1.5rem; border-top: 1px solid var(--ptc-line); background: var(--ptc-surface); }
.ptc-mobile-nav form { margin-bottom: .8rem; }
.ptc-mobile-nav label { display: block; margin-bottom: .35rem; color: var(--ptc-muted); font-size: .78rem; font-weight: 700; }
.ptc-mobile-nav form div { display: grid; grid-template-columns: 1fr auto; }
.ptc-mobile-nav input { min-width: 0; padding: .8rem .9rem; border: 1px solid var(--ptc-line); border-radius: .7rem 0 0 .7rem; background: var(--ptc-cream); color: var(--ptc-ink); }
.ptc-mobile-nav button { border: 0; border-radius: 0 .7rem .7rem 0; background: var(--ptc-purple); color: #fff; padding-inline: 1rem; }
.ptc-mobile-nav > a { display: block; padding: .72rem 0; border-bottom: 1px solid var(--ptc-line); color: var(--ptc-navy); text-decoration: none; font-weight: 700; }

.ptc-button { min-height: 2.85rem; display: inline-flex; align-items: center; justify-content: center; gap: .45rem; padding: .76rem 1.2rem; border: 1px solid transparent; border-radius: .78rem; text-decoration: none; font-weight: 800; line-height: 1.1; transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease; }
.ptc-button:hover { transform: translateY(-2px); }
.ptc-button--primary { background: var(--ptc-purple-strong); color: #fff; box-shadow: 0 10px 25px color-mix(in srgb, var(--ptc-purple) 26%, transparent); }
.ptc-button--primary:hover { background: var(--ptc-purple); }
.ptc-button--secondary { border-color: var(--ptc-line); background: var(--ptc-surface); color: var(--ptc-navy); }
.ptc-button--secondary:hover { border-color: var(--ptc-purple); color: var(--ptc-purple-strong); box-shadow: var(--ptc-shadow-soft); }
.ptc-button--light { background: #fff; color: #2d2340; }
.ptc-button--text { min-height: auto; padding: 0; color: var(--ptc-purple-strong); }
.ptc-button--compact { min-height: 2.55rem; padding: .65rem .95rem; font-size: .83rem; }
.ptc-actions { display: flex; flex-wrap: wrap; gap: .8rem; }
.ptc-eyebrow { display: inline-block; color: var(--ptc-purple-strong); font-size: .72rem; font-weight: 850; letter-spacing: .16em; text-transform: uppercase; }

.ptc-hero { position: relative; overflow: hidden; padding: clamp(4.5rem, 8vw, 8rem) 0; background: radial-gradient(circle at 78% 22%, color-mix(in srgb, var(--ptc-gold) 18%, transparent), transparent 28%), linear-gradient(135deg, var(--ptc-cream), color-mix(in srgb, var(--ptc-purple-soft) 70%, var(--ptc-cream))); }
.ptc-hero::before { content: ""; position: absolute; width: 28rem; height: 28rem; left: -14rem; bottom: -17rem; border: 1px solid color-mix(in srgb, var(--ptc-purple) 25%, transparent); border-radius: 50%; }
.ptc-hero__grid { position: relative; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(18rem, .75fr); align-items: center; gap: clamp(2.5rem, 6vw, 6rem); }
.ptc-hero__copy h1, .ptc-page-hero h1, .ptc-article-header h1 { max-width: 14ch; margin: .9rem 0 1.3rem; color: var(--ptc-navy); font-family: Georgia, "Times New Roman", serif; font-size: clamp(3rem, 6vw, 5.9rem); font-weight: 700; line-height: .98; letter-spacing: -.045em; }
.ptc-hero__copy > p { max-width: 43rem; margin: 0 0 2rem; color: var(--ptc-navy-soft); font-size: clamp(1.05rem, 1.7vw, 1.25rem); }
.ptc-hero__facts { margin: 2.4rem 0 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--ptc-line); }
.ptc-hero__facts div { padding: 1.1rem 1rem 0 0; }
.ptc-hero__facts dt { color: var(--ptc-purple-strong); font-size: .73rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.ptc-hero__facts dd { margin: .35rem 0 0; color: var(--ptc-muted); font-size: .84rem; line-height: 1.45; }
.ptc-profile-card { position: relative; padding: 1.1rem 1.1rem 1.5rem; border: 1px solid var(--ptc-line); border-radius: var(--ptc-radius-lg); background: color-mix(in srgb, var(--ptc-surface) 92%, transparent); box-shadow: var(--ptc-shadow); transform: rotate(1.2deg); }
.ptc-profile-card::after { content: ""; position: absolute; inset: .75rem -.75rem -.75rem .75rem; z-index: -1; border: 1px solid color-mix(in srgb, var(--ptc-gold) 55%, transparent); border-radius: var(--ptc-radius-lg); }
.ptc-profile-card__portrait { aspect-ratio: 4 / 4.2; overflow: hidden; display: grid; place-items: center; border-radius: 1.4rem; background: linear-gradient(145deg, var(--ptc-purple), var(--ptc-navy)); }
.ptc-profile-card__portrait img { width: 100%; height: 100%; object-fit: cover; }
.ptc-profile-card__portrait--placeholder span { color: #fff; font-family: Georgia, serif; font-size: clamp(4rem, 9vw, 7.5rem); opacity: .88; }
.ptc-profile-card__label { display: block; margin-top: 1.1rem; color: var(--ptc-gold); font-size: .7rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.ptc-profile-card h2 { margin: .25rem 0 .45rem; color: var(--ptc-navy); font-family: Georgia, serif; font-size: 1.7rem; }
.ptc-profile-card p { margin: 0 0 .9rem; color: var(--ptc-muted); font-size: .92rem; }
.ptc-profile-card a { color: var(--ptc-purple-strong); font-weight: 800; text-decoration: none; }

.ptc-section { padding: clamp(4rem, 7vw, 7rem) 0; }
.ptc-section--paper { background: var(--ptc-paper); }
.ptc-section--featured { background: var(--ptc-surface); }
.ptc-section--listing { padding-top: 3.2rem; }
.ptc-section-heading { margin-bottom: 2rem; display: flex; align-items: end; justify-content: space-between; gap: 1.5rem; }
.ptc-section-heading--compact { margin-bottom: 1.3rem; }
.ptc-section-heading h2, .ptc-resource-layout > div > h2, .ptc-about-grid h2, .ptc-process h2, .ptc-invitation h2 { margin: .45rem 0 0; color: var(--ptc-navy); font-family: Georgia, "Times New Roman", serif; font-size: clamp(2.1rem, 4vw, 3.8rem); line-height: 1.05; letter-spacing: -.035em; }
.ptc-section-heading > a { color: var(--ptc-purple-strong); font-weight: 800; text-decoration-thickness: 1px; text-underline-offset: .25em; }

.ptc-feature-story { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); overflow: hidden; border: 1px solid var(--ptc-line); border-radius: var(--ptc-radius-lg); background: var(--ptc-cream); box-shadow: var(--ptc-shadow-soft); }
.ptc-feature-story__media { min-height: 29rem; display: block; overflow: hidden; background: linear-gradient(145deg, var(--ptc-purple-soft), var(--ptc-gold-soft)); }
.ptc-feature-story__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s ease; }
.ptc-feature-story__media:hover img { transform: scale(1.025); }
.ptc-feature-story__media--placeholder { display: grid; place-items: center; color: var(--ptc-purple); }
.ptc-feature-story__media--placeholder svg { width: 6rem; height: 6rem; opacity: .45; }
.ptc-feature-story__content { padding: clamp(2rem, 5vw, 4.5rem); display: flex; flex-direction: column; justify-content: center; }
.ptc-feature-story h3 { margin: 1rem 0; color: var(--ptc-navy); font-family: Georgia, serif; font-size: clamp(2rem, 4vw, 3.8rem); line-height: 1.05; }
.ptc-feature-story h3 a { text-decoration: none; }
.ptc-feature-story p { margin: 0; color: var(--ptc-muted); font-size: 1.05rem; }
.ptc-feature-story__footer { margin-top: 2rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; color: var(--ptc-muted); font-size: .82rem; }
.ptc-meta-row { display: flex; flex-wrap: wrap; align-items: center; gap: .65rem; color: var(--ptc-muted); font-size: .72rem; font-weight: 750; letter-spacing: .04em; text-transform: uppercase; }
.ptc-topic { color: var(--ptc-purple-strong); text-decoration: none; }

.ptc-topic-strip { padding: 3.5rem 0; background: var(--ptc-navy); color: #fff; }
.ptc-topic-strip .ptc-eyebrow { color: #f2c69d; }
.ptc-topic-strip h2 { color: #fff; }
.ptc-topic-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .85rem; }
.ptc-topic-tile { min-height: 10rem; display: flex; flex-direction: column; justify-content: space-between; padding: 1.2rem; border: 1px solid rgba(255, 255, 255, .16); border-radius: var(--ptc-radius-md); background: rgba(255, 255, 255, .06); color: #fff; text-decoration: none; transition: transform .2s ease, background .2s ease; }
.ptc-topic-tile:hover { transform: translateY(-4px); background: rgba(255, 255, 255, .11); }
.ptc-topic-tile > span { color: #f2c69d; font-family: Georgia, serif; font-size: 1.35rem; }
.ptc-topic-tile strong { font-family: Georgia, serif; font-size: 1.25rem; line-height: 1.15; }
.ptc-topic-tile small { color: rgba(255, 255, 255, .68); }

.ptc-article-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; }
.ptc-article-grid--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.ptc-article-card { min-width: 0; overflow: hidden; display: flex; flex-direction: column; border: 1px solid var(--ptc-line); border-radius: var(--ptc-radius-md); background: var(--ptc-surface); box-shadow: 0 1px 0 rgba(40, 50, 74, .02); transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.ptc-article-card:hover { transform: translateY(-5px); border-color: color-mix(in srgb, var(--ptc-purple) 45%, var(--ptc-line)); box-shadow: var(--ptc-shadow-soft); }
.ptc-article-card__media { aspect-ratio: 16 / 9; display: block; overflow: hidden; background: var(--ptc-purple-soft); }
.ptc-article-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
.ptc-article-card:hover .ptc-article-card__media img { transform: scale(1.035); }
.ptc-article-card__media--placeholder { display: grid; place-items: center; background: linear-gradient(145deg, var(--ptc-purple-soft), var(--ptc-gold-soft)); color: var(--ptc-purple); }
.ptc-article-card__media--placeholder svg { width: 3.3rem; height: 3.3rem; opacity: .52; }
.ptc-article-card__body { flex: 1; display: flex; flex-direction: column; padding: 1.25rem; }
.ptc-article-card h3 { margin: .75rem 0 .55rem; color: var(--ptc-navy); font-family: Georgia, serif; font-size: 1.45rem; line-height: 1.17; }
.ptc-article-card h3 a { text-decoration: none; }
.ptc-article-card p { margin: 0; color: var(--ptc-muted); font-size: .91rem; }
.ptc-article-card__footer { margin-top: auto; padding-top: 1.15rem; display: flex; justify-content: space-between; gap: .75rem; color: var(--ptc-muted); font-size: .74rem; }

.ptc-resource-layout { display: grid; grid-template-columns: minmax(15rem, .72fr) minmax(0, 1.28fr); gap: clamp(2rem, 6vw, 6rem); align-items: start; }
.ptc-resource-layout > div:first-child { position: sticky; top: 8rem; }
.ptc-resource-layout > div:first-child > p { max-width: 35rem; color: var(--ptc-muted); }
.ptc-resource-list { display: grid; gap: .8rem; }
.ptc-resource-item { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 1rem; padding: 1rem; border: 1px solid var(--ptc-line); border-radius: var(--ptc-radius-md); background: var(--ptc-surface); }
.ptc-resource-item__icon { width: 3.2rem; height: 3.2rem; display: grid; place-items: center; border-radius: .8rem; background: var(--ptc-purple-soft); color: var(--ptc-purple-strong); }
.ptc-resource-item small { color: var(--ptc-purple-strong); font-weight: 800; }
.ptc-resource-item h3 { margin: .15rem 0 .2rem; color: var(--ptc-navy); font-family: Georgia, serif; font-size: 1.18rem; }
.ptc-resource-item p { margin: 0; color: var(--ptc-muted); font-size: .84rem; }
.ptc-access-label { padding: .35rem .55rem; border-radius: 999px; background: var(--ptc-gold-soft); color: color-mix(in srgb, var(--ptc-gold) 65%, #5a2d0d); font-size: .68rem; font-weight: 850; text-transform: uppercase; }

.ptc-product-grid, .ptc-library-grid, .ptc-service-grid, .ptc-plan-grid, .ptc-values-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.2rem; }
.ptc-product-card, .ptc-library-card, .ptc-service-card, .ptc-plan-card, .ptc-values-grid article { padding: 1.5rem; border: 1px solid var(--ptc-line); border-radius: var(--ptc-radius-md); background: var(--ptc-surface); }
.ptc-product-card__type, .ptc-plan-card__label { color: var(--ptc-gold); font-size: .68rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.ptc-product-card h3, .ptc-library-card h2, .ptc-service-card h2, .ptc-plan-card h2, .ptc-values-grid h3 { margin: .55rem 0; color: var(--ptc-navy); font-family: Georgia, serif; font-size: 1.55rem; line-height: 1.12; }
.ptc-product-card p, .ptc-library-card p, .ptc-service-card p, .ptc-plan-card p, .ptc-values-grid p { color: var(--ptc-muted); }
.ptc-product-card > div:last-child, .ptc-library-card__footer { margin-top: 1.2rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.ptc-product-card a, .ptc-library-card a { color: var(--ptc-purple-strong); font-weight: 800; }
.ptc-product-card strong, .ptc-library-card strong { color: var(--ptc-navy); font-size: 1.1rem; }
.ptc-library-card { min-height: 20rem; display: flex; flex-direction: column; }
.ptc-library-card__icon { width: 3.3rem; height: 3.3rem; display: grid; place-items: center; margin-bottom: 1.5rem; border-radius: .9rem; background: var(--ptc-purple-soft); color: var(--ptc-purple-strong); }
.ptc-library-card__footer { margin-top: auto; padding-top: 1rem; border-top: 1px solid var(--ptc-line); color: var(--ptc-muted); font-size: .82rem; }
.ptc-service-card > span, .ptc-values-grid article > span { color: var(--ptc-gold); font-family: Georgia, serif; font-size: 1.7rem; }
.ptc-service-card ul, .ptc-plan-card ul { padding-left: 1.15rem; color: var(--ptc-muted); }
.ptc-plan-card { display: flex; flex-direction: column; }
.ptc-plan-card .ptc-button { margin-top: auto; }
.ptc-plan-card--featured { border-color: var(--ptc-purple); box-shadow: var(--ptc-shadow); transform: translateY(-.65rem); }

.ptc-invitation { padding: clamp(3.2rem, 6vw, 5rem) 0; background: linear-gradient(120deg, var(--ptc-purple-strong), var(--ptc-navy)); color: #fff; }
.ptc-invitation__inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.ptc-invitation .ptc-eyebrow { color: #f3c79f; }
.ptc-invitation h2 { color: #fff; max-width: 16ch; }
.ptc-invitation p { max-width: 43rem; color: rgba(255, 255, 255, .78); }

.ptc-page-hero { padding: clamp(4rem, 7vw, 7rem) 0; background: linear-gradient(135deg, var(--ptc-purple-soft), var(--ptc-cream)); border-bottom: 1px solid var(--ptc-line); }
.ptc-page-hero__inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(18rem, .58fr); align-items: end; gap: 3rem; }
.ptc-page-hero h1 { max-width: 13ch; font-size: clamp(2.8rem, 5vw, 5rem); }
.ptc-page-hero p { max-width: 47rem; margin: 0; color: var(--ptc-muted); font-size: 1.05rem; }
.ptc-search-panel { padding: 1.1rem; border: 1px solid var(--ptc-line); border-radius: var(--ptc-radius-md); background: var(--ptc-surface); box-shadow: var(--ptc-shadow-soft); }
.ptc-search-panel label { display: block; margin-bottom: .45rem; color: var(--ptc-navy); font-size: .78rem; font-weight: 800; }
.ptc-search-panel > div { display: grid; grid-template-columns: 1fr auto; }
.ptc-search-panel input { min-width: 0; padding: .86rem .9rem; border: 1px solid var(--ptc-line); border-radius: .75rem 0 0 .75rem; background: var(--ptc-cream); color: var(--ptc-ink); }
.ptc-search-panel button { display: inline-flex; align-items: center; gap: .45rem; padding: 0 1rem; border: 0; border-radius: 0 .75rem .75rem 0; background: var(--ptc-purple-strong); color: #fff; font-weight: 800; cursor: pointer; }
.ptc-content-layout { display: grid; grid-template-columns: 15rem minmax(0, 1fr); gap: 2.5rem; align-items: start; }
.ptc-content-sidebar { position: sticky; top: 8.5rem; padding: 1rem; border: 1px solid var(--ptc-line); border-radius: var(--ptc-radius-md); background: var(--ptc-surface); }
.ptc-content-sidebar h2 { margin: .2rem .5rem .7rem; color: var(--ptc-navy); font-family: Georgia, serif; font-size: 1.35rem; }
.ptc-content-sidebar a { display: flex; justify-content: space-between; gap: .7rem; padding: .65rem .55rem; border-radius: .6rem; color: var(--ptc-muted); text-decoration: none; font-size: .86rem; font-weight: 700; }
.ptc-content-sidebar a:hover, .ptc-content-sidebar a[aria-current="page"] { background: var(--ptc-purple-soft); color: var(--ptc-purple-strong); }
.ptc-content-sidebar small { color: inherit; opacity: .72; }
.ptc-result-heading { min-height: 2.4rem; margin-bottom: 1rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; color: var(--ptc-muted); font-size: .85rem; }
.ptc-result-heading p { margin: 0; }
.ptc-result-heading a { color: var(--ptc-purple-strong); font-weight: 800; }
.ptc-pagination { margin-top: 2rem; display: flex; justify-content: center; gap: .45rem; }
.ptc-pagination a { width: 2.5rem; height: 2.5rem; display: grid; place-items: center; border: 1px solid var(--ptc-line); border-radius: .65rem; background: var(--ptc-surface); text-decoration: none; font-weight: 800; }
.ptc-pagination a[aria-current="page"] { border-color: var(--ptc-purple); background: var(--ptc-purple); color: #fff; }

.ptc-empty { grid-column: 1 / -1; min-height: 16rem; display: grid; place-items: center; align-content: center; padding: 2rem; border: 1px dashed var(--ptc-line); border-radius: var(--ptc-radius-md); color: var(--ptc-muted); text-align: center; }
.ptc-empty svg { width: 3rem; height: 3rem; color: var(--ptc-purple); }
.ptc-empty h2, .ptc-empty h3 { margin: .7rem 0 .2rem; color: var(--ptc-navy); font-family: Georgia, serif; }
.ptc-empty p { margin: 0; }
.ptc-empty--compact { min-height: 7rem; }

.ptc-reading-progress { position: fixed; left: 0; right: 0; top: 0; z-index: 100; height: 3px; background: transparent; }
.ptc-reading-progress span { display: block; width: 0; height: 100%; background: var(--ptc-gold); }
.ptc-article-header { padding: clamp(4rem, 7vw, 7rem) 0 3.5rem; background: linear-gradient(135deg, var(--ptc-cream), var(--ptc-purple-soft)); }
.ptc-article-header__inner { max-width: 920px; }
.ptc-breadcrumbs { margin-bottom: 2rem; display: flex; flex-wrap: wrap; gap: .45rem; color: var(--ptc-muted); font-size: .78rem; }
.ptc-breadcrumbs a { color: var(--ptc-purple-strong); }
.ptc-article-header h1 { max-width: 18ch; font-size: clamp(2.8rem, 5.8vw, 5.4rem); }
.ptc-article-header__excerpt { max-width: 48rem; color: var(--ptc-muted); font-size: clamp(1.05rem, 1.8vw, 1.28rem); }
.ptc-article-byline { margin-top: 2rem; display: flex; align-items: center; gap: .8rem; }
.ptc-article-byline__mark { width: 2.9rem; height: 2.9rem; display: grid; place-items: center; border-radius: 50%; background: var(--ptc-navy); color: #fff; font-family: Georgia, serif; font-weight: 700; }
.ptc-article-byline > div:last-child { display: grid; }
.ptc-article-byline strong { color: var(--ptc-navy); }
.ptc-article-byline span { color: var(--ptc-muted); font-size: .78rem; }
.ptc-article-cover { margin-top: 2.5rem; overflow: hidden; border-radius: var(--ptc-radius-lg); box-shadow: var(--ptc-shadow); }
.ptc-article-cover img { width: 100%; max-height: 38rem; object-fit: cover; }
.ptc-article-layout { display: grid; grid-template-columns: 11rem minmax(0, 740px); justify-content: center; gap: 3rem; padding-top: 4rem; padding-bottom: 6rem; }
.ptc-article-aside { position: sticky; top: 9rem; align-self: start; display: grid; gap: .65rem; color: var(--ptc-muted); font-size: .78rem; }
.ptc-article-aside > span { color: var(--ptc-navy); font-weight: 850; }
.ptc-article-aside a { color: var(--ptc-purple-strong); }
.ptc-richtext { color: var(--ptc-ink); font-family: Georgia, "Times New Roman", serif; font-size: 1.16rem; line-height: 1.88; }
.ptc-richtext > :first-child { margin-top: 0; }
.ptc-richtext h2, .ptc-richtext h3 { margin: 2.2em 0 .7em; color: var(--ptc-navy); line-height: 1.2; }
.ptc-richtext h2 { font-size: 2rem; }
.ptc-richtext h3 { font-size: 1.55rem; }
.ptc-richtext a { color: var(--ptc-purple-strong); text-underline-offset: .2em; }
.ptc-richtext blockquote { margin: 2rem 0; padding: 1.2rem 1.5rem; border-left: 4px solid var(--ptc-gold); background: var(--ptc-paper); color: var(--ptc-navy); font-size: 1.35rem; font-style: italic; }
.ptc-richtext img { margin: 2rem auto; border-radius: var(--ptc-radius-md); }
.ptc-richtext code { padding: .15em .35em; border-radius: .3rem; background: var(--ptc-purple-soft); font-family: ui-monospace, monospace; font-size: .86em; }

.ptc-page-hero--profile { padding-bottom: 0; }
.ptc-profile-intro { display: grid; grid-template-columns: minmax(0, 1fr) 23rem; align-items: end; gap: 4rem; }
.ptc-profile-portrait { aspect-ratio: 4 / 4.6; overflow: hidden; display: grid; place-items: center; border-radius: var(--ptc-radius-lg) var(--ptc-radius-lg) 0 0; background: linear-gradient(145deg, var(--ptc-purple), var(--ptc-navy)); box-shadow: var(--ptc-shadow); }
.ptc-profile-portrait img { width: 100%; height: 100%; object-fit: cover; }
.ptc-profile-portrait--placeholder span { color: #fff; font-family: Georgia, serif; font-size: 7rem; opacity: .85; }
.ptc-about-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(18rem, .55fr); gap: 4rem; align-items: start; }
.ptc-prose p { max-width: 48rem; color: var(--ptc-muted); font-size: 1.02rem; }
.ptc-academic-note { position: relative; padding: 2rem; border: 1px solid var(--ptc-line); border-radius: var(--ptc-radius-md); background: var(--ptc-surface); box-shadow: var(--ptc-shadow-soft); }
.ptc-academic-note > span { position: absolute; top: .2rem; right: 1rem; color: var(--ptc-gold); font-family: Georgia, serif; font-size: 5rem; opacity: .5; }
.ptc-academic-note blockquote { margin: 0; color: var(--ptc-navy); font-family: Georgia, serif; font-size: 1.55rem; line-height: 1.35; }
.ptc-academic-note small { display: block; margin-top: 1rem; color: var(--ptc-muted); }
.ptc-values-grid article { min-height: 16rem; }
.ptc-process { display: grid; grid-template-columns: minmax(15rem, .7fr) minmax(0, 1.3fr); gap: 4rem; }
.ptc-process ol { margin: 0; padding: 0; list-style: none; display: grid; gap: .8rem; }
.ptc-process li { display: grid; grid-template-columns: 2.7rem 1fr; gap: 1rem; padding: 1rem; border: 1px solid var(--ptc-line); border-radius: var(--ptc-radius-md); background: var(--ptc-surface); }
.ptc-process li > span { width: 2.7rem; height: 2.7rem; display: grid; place-items: center; border-radius: 50%; background: var(--ptc-purple-soft); color: var(--ptc-purple-strong); font-family: Georgia, serif; font-weight: 700; }
.ptc-process strong { color: var(--ptc-navy); }
.ptc-process p { margin: .15rem 0 0; color: var(--ptc-muted); }

.ptc-site-footer { padding: 4rem 0 1.5rem; background: #20283b; color: #fff; }
.ptc-footer-grid { display: grid; grid-template-columns: minmax(18rem, 1.5fr) repeat(3, minmax(10rem, .65fr)); gap: 2.5rem; }
.ptc-footer-profile { display: flex; gap: 1rem; }
.ptc-footer-profile__mark .wms-brand__visual, .ptc-footer-profile__mark { width: 3.2rem; height: 3.2rem; flex: 0 0 auto; }
.ptc-footer-profile strong { font-family: Georgia, serif; font-size: 1.3rem; }
.ptc-footer-profile p { max-width: 28rem; margin: .35rem 0 0; color: rgba(255, 255, 255, .66); font-size: .88rem; }
.ptc-footer-grid h2 { margin: 0 0 .9rem; color: #f3c79f; font-size: .76rem; letter-spacing: .12em; text-transform: uppercase; }
.ptc-footer-grid > div:not(:first-child) { display: flex; flex-direction: column; align-items: flex-start; gap: .55rem; }
.ptc-footer-grid a { color: rgba(255, 255, 255, .76); font-size: .85rem; text-decoration: none; }
.ptc-footer-grid a:hover { color: #fff; text-decoration: underline; }
.ptc-footer-bottom { margin-top: 3rem; padding-top: 1.2rem; border-top: 1px solid rgba(255, 255, 255, .12); display: flex; justify-content: space-between; gap: 1rem; color: rgba(255, 255, 255, .52); font-size: .72rem; }

.ptc-auth { margin: 0; min-height: 100vh; background: linear-gradient(135deg, var(--ptc-purple-soft), var(--ptc-gold-soft)); }
.ptc-auth__shell { min-height: 100vh; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 4rem; max-width: 1100px; margin: auto; padding: 2rem; }
.ptc-auth__card { padding: 2rem; border-radius: 1.5rem; background: var(--ptc-surface); box-shadow: var(--ptc-shadow); }

@media (max-width: 1120px) {
    .ptc-primary-nav { display: none; }
    .ptc-menu-toggle { display: block; }
    .ptc-brand { margin-right: auto; }
    .ptc-topic-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
    .ptc-academic-bar__inner { justify-content: center; text-align: center; }
    .ptc-academic-bar a { display: none; }
    .ptc-header-main { min-height: 4.7rem; gap: .75rem; }
    .ptc-brand__copy small { display: none; }
    .ptc-header-actions .ptc-button { display: none; }
    .ptc-hero__grid, .ptc-feature-story, .ptc-resource-layout, .ptc-page-hero__inner, .ptc-content-layout, .ptc-about-grid, .ptc-process, .ptc-profile-intro, .ptc-auth__shell { grid-template-columns: 1fr; }
    .ptc-profile-card { max-width: 31rem; transform: none; }
    .ptc-hero__facts { grid-template-columns: 1fr; }
    .ptc-hero__facts div { padding: .8rem 0; border-bottom: 1px solid var(--ptc-line); }
    .ptc-feature-story__media { min-height: 18rem; }
    .ptc-article-grid, .ptc-article-grid--two, .ptc-product-grid, .ptc-library-grid, .ptc-service-grid, .ptc-plan-grid, .ptc-values-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .ptc-resource-layout > div:first-child, .ptc-content-sidebar { position: static; }
    .ptc-content-sidebar { display: flex; overflow-x: auto; gap: .35rem; }
    .ptc-content-sidebar h2 { display: none; }
    .ptc-content-sidebar a { flex: 0 0 auto; }
    .ptc-article-layout { grid-template-columns: 1fr; }
    .ptc-article-aside { position: static; display: flex; flex-wrap: wrap; }
    .ptc-profile-portrait { max-width: 28rem; }
    .ptc-invitation__inner, .ptc-footer-bottom { align-items: flex-start; flex-direction: column; }
    .ptc-footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .ptc-footer-profile { grid-column: 1 / -1; }
}

@media (max-width: 580px) {
    .ptc-container { width: min(calc(100% - 1.5rem), var(--ptc-container)); }
    .ptc-brand { min-width: 0; }
    .ptc-brand__copy strong { font-size: .98rem; }
    .ptc-hero { padding-top: 3.5rem; }
    .ptc-hero__copy h1, .ptc-page-hero h1, .ptc-article-header h1 { font-size: clamp(2.55rem, 13vw, 4rem); }
    .ptc-actions { align-items: stretch; flex-direction: column; }
    .ptc-button { width: 100%; }
    .ptc-topic-grid, .ptc-article-grid, .ptc-article-grid--two, .ptc-product-grid, .ptc-library-grid, .ptc-service-grid, .ptc-plan-grid, .ptc-values-grid, .ptc-footer-grid { grid-template-columns: 1fr; }
    .ptc-section-heading { align-items: flex-start; flex-direction: column; }
    .ptc-feature-story__content { padding: 1.35rem; }
    .ptc-feature-story h3 { font-size: 2rem; }
    .ptc-feature-story__footer, .ptc-product-card > div:last-child, .ptc-library-card__footer { align-items: flex-start; flex-direction: column; }
    .ptc-resource-item { grid-template-columns: auto 1fr; }
    .ptc-access-label { grid-column: 2; justify-self: start; }
    .ptc-plan-card--featured { transform: none; }
    .ptc-profile-intro { gap: 2rem; }
    .ptc-profile-portrait { width: 100%; }
    .ptc-search-panel button span { display: none; }
    .ptc-footer-profile { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* RC.9 · CMS acadêmico */
.ptc-admin-media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr));
    gap: var(--wms-space-5);
}
.ptc-admin-media-card { overflow: hidden; }
.ptc-admin-media-card__preview {
    display: grid;
    min-height: 12rem;
    place-items: center;
    overflow: hidden;
    background: color-mix(in srgb, var(--wms-color-primary) 6%, var(--wms-color-background));
}
.ptc-admin-media-card__preview img {
    width: 100%;
    height: 13rem;
    object-fit: cover;
}
.ptc-admin-media-card__document {
    display: grid;
    gap: var(--wms-space-2);
    place-items: center;
    color: var(--wms-color-primary);
}
.ptc-content-editor-shell {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(18rem, 24rem);
    align-items: start;
    gap: var(--wms-space-6);
}
.ptc-content-editor-shell__sidebar {
    position: sticky;
    top: calc(var(--wms-space-6) + 4rem);
}
.ptc-media-preview {
    display: grid;
    min-height: 10rem;
    place-items: center;
    overflow: hidden;
    border: 1px dashed var(--wms-color-border);
    border-radius: var(--wms-radius-lg);
    background: var(--wms-color-background);
    color: var(--wms-color-text-muted);
}
.ptc-media-preview img {
    width: 100%;
    max-height: 18rem;
    object-fit: cover;
}
.ptc-article-body iframe,
.ptc-rich-content iframe,
.ptc-richtext iframe {
    width: 100%;
    min-height: 24rem;
    aspect-ratio: 16 / 9;
    border: 0;
    border-radius: 1.25rem;
    box-shadow: var(--wms-shadow-md);
}
.ptc-current-file {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: var(--wms-space-3);
    align-items: center;
    padding: var(--wms-space-4);
    border: 1px solid var(--wms-color-border);
    border-radius: var(--wms-radius-lg);
    background: var(--wms-color-background);
}
@media (max-width: 64rem) {
    .ptc-content-editor-shell { grid-template-columns: 1fr; }
    .ptc-content-editor-shell__sidebar { position: static; }
}