/* VAPTIC — Shared Article Stylesheet (c101-*.html) */

:root {
    --white: #FFFFFF; --off-white: #F5F5F5; --orange: #EA5C1F; --orange-hover: #D54E15;
    --navy: #212431; --navy-light: #2A2E3D; --slate: #4F5D75; --silver: #D6D7D7;
    --text-dark: #1A1D26; --text-muted: #6B7280; --border-light: #E5E7EB;
    --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'Space Mono', monospace;
    --container-width: 1200px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-xs: 0 1px 4px rgba(0,0,0,0.05);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.12), 0 4px 16px rgba(0,0,0,0.06);
    --shadow-orange: 0 8px 28px rgba(234,92,31,0.28);
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-primary); background: var(--white); color: var(--text-dark); line-height: 1.6; overflow-x: hidden; -webkit-font-smoothing: antialiased; }
::selection { background: var(--orange); color: var(--white); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: var(--container-width); margin: 0 auto; padding: 0 32px; }

/* ── NAV ── */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; padding: 20px 0; background-color: rgba(255,255,255,0.92); backdrop-filter: blur(16px); border-bottom: 1px solid transparent; transition: var(--transition); }
.nav.scrolled { background-color: rgba(255,255,255,0.97); padding: 14px 0; border-bottom-color: var(--border-light); box-shadow: var(--shadow-sm); }
.nav__container { display: flex; justify-content: space-between; align-items: center; max-width: var(--container-width); margin: 0 auto; padding: 0 32px; }
.nav__logo { height: 48px; width: auto; }
.nav__menu { display: flex; align-items: center; gap: 48px; }
.nav__links { display: flex; gap: 40px; list-style: none; }
.nav__link { font-size: 14px; font-weight: 600; color: var(--slate); transition: var(--transition); position: relative; letter-spacing: 0.2px; }
.nav__link:hover, .nav__link.active { color: var(--navy); }
.nav__link::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: linear-gradient(90deg, var(--orange), transparent); transition: var(--transition); }
.nav__link:hover::after, .nav__link.active::after { width: 100%; }
.nav__dropdown-wrap { position: relative; }
.nav__link--has-dropdown { display: inline-flex; align-items: center; gap: 5px; }
.nav__caret { font-size: 13px; transition: transform 0.25s ease; display: inline-block; }
.nav__dropdown-wrap:hover .nav__caret { transform: rotate(180deg); }
.nav__dropdown { position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(-8px); width: 560px; padding-top: 18px; background: transparent; border: none; overflow: visible; opacity: 0; visibility: hidden; pointer-events: none; transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s; z-index: 200; }
.nav__dropdown-wrap:hover .nav__dropdown { opacity: 1; visibility: visible; pointer-events: all; transform: translateX(-50%) translateY(0); } .nav__dropdown-wrap.is-open .nav__dropdown { opacity: 1; visibility: visible; pointer-events: all; transform: translateX(-50%) translateY(0); } .nav__dropdown-wrap.is-open .nav__caret { transform: rotate(180deg); }
.nav__dropdown-inner { display: grid; grid-template-columns: 1fr 200px; background: var(--white); border-radius: 16px; overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,0.14), 0 4px 20px rgba(0,0,0,0.06); border: 1px solid var(--border-light); }
.nav__dropdown-links { padding: 12px; }
.nav__dd-item { display: flex; align-items: flex-start; gap: 10px; padding: 9px 10px; border-radius: 10px; transition: background 0.18s; color: var(--text-dark); }
.nav__dd-item:hover { background: var(--off-white); }
.nav__dd-icon { width: 30px; height: 30px; border-radius: 8px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px; }
.nav__dd-icon--orange { background: rgba(234,92,31,0.10); }
.nav__dd-icon--orange i { color: var(--orange); }
.nav__dd-icon--muted { background: rgba(79,93,117,0.08); }
.nav__dd-icon--muted i { color: var(--slate); }
.nav__dd-icon i { font-size: 15px; }
.nav__dd-name { font-size: 13px; font-weight: 700; color: var(--text-dark); line-height: 1.2; }
.nav__dd-desc { font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.nav__dd-badge { font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.6px; padding: 2px 6px; border-radius: 4px; margin-left: 5px; vertical-align: middle; display: inline-block; }
.nav__dd-badge--live { background: rgba(34,197,94,0.12); color: #15803d; }
.nav__dd-badge--soon { background: rgba(107,114,128,0.10); color: var(--text-muted); }
.nav__dd-divider { height: 1px; background: var(--border-light); margin: 6px 10px; }
.nav__dd-all { display: flex; align-items: center; gap: 6px; padding: 9px 10px; border-radius: 10px; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.4px; color: var(--orange); transition: background 0.18s; }
.nav__dd-all:hover { background: rgba(234,92,31,0.06); }
.nav__dd-all i { font-size: 13px; }
.nav__dropdown-feature { background: linear-gradient(145deg, var(--navy), var(--navy-light)); padding: 20px; display: flex; flex-direction: column; gap: 10px; }
.nav__dd-fc-label { font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.6px; color: var(--orange); }
.nav__dd-fc-title { font-size: 14px; font-weight: 800; color: var(--white); line-height: 1.3; letter-spacing: -0.2px; }
.nav__dd-fc-sub { font-size: 11px; color: rgba(255,255,255,0.5); line-height: 1.55; flex: 1; }
.nav__dd-fc-cta { display: inline-flex; align-items: center; gap: 5px; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.4px; color: var(--orange); margin-top: auto; }
.nav__dd-fc-cta i { font-size: 12px; }
.nav__actions { display: flex; gap: 12px; }
.nav__hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.nav__hamburger span { width: 24px; height: 2px; background-color: var(--navy); transition: var(--transition); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 24px; font-family: var(--font-primary); font-weight: 600; font-size: 14px; border: none; cursor: pointer; transition: all 0.25s cubic-bezier(0.4,0,0.2,1); text-transform: uppercase; letter-spacing: 0.6px; border-radius: 12px; text-decoration: none; }
.btn--primary { background: linear-gradient(135deg, var(--orange) 0%, #D54E15 100%); color: var(--white); box-shadow: var(--shadow-orange); }
.btn--primary:hover { background: linear-gradient(135deg, #F06830 0%, var(--orange) 100%); transform: translateY(-2px); box-shadow: 0 12px 36px rgba(234,92,31,0.38); }
.btn--secondary { background-color: transparent; color: var(--navy); border: 2px solid var(--navy); }
.btn--secondary:hover { background-color: var(--navy); color: var(--white); transform: translateY(-2px); }
.btn--white { background: var(--white); color: var(--navy); }
.btn--white:hover { background: var(--off-white); transform: translateY(-2px); }
.btn i { font-size: 18px; }

/* ── ARTICLE HERO ── */
.article-hero { background: linear-gradient(145deg, var(--navy) 0%, var(--navy-light) 100%); padding: 132px 0 60px; position: relative; overflow: hidden; }
.article-hero__grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px); background-size: 64px 64px; pointer-events: none; }
.article-hero__glow { position: absolute; top: -60px; right: -60px; width: 400px; height: 400px; background: radial-gradient(circle, rgba(234,92,31,0.10), transparent 65%); pointer-events: none; }
.article-hero__inner { position: relative; z-index: 1; }
.article-hero__breadcrumb { display: flex; align-items: center; gap: 7px; margin-bottom: 20px; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.4px; color: rgba(255,255,255,0.35); flex-wrap: wrap; }
.article-hero__breadcrumb a { color: rgba(255,255,255,0.4); transition: color 0.2s; }
.article-hero__breadcrumb a:hover { color: rgba(255,255,255,0.7); }
.article-hero__breadcrumb i { font-size: 10px; }
.article-hero__meta { display: flex; align-items: center; gap: 10px; margin-bottom: 22px; flex-wrap: wrap; }
.topic-badge { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.8px; padding: 5px 13px; border-radius: 20px; display: inline-flex; align-items: center; gap: 6px; }
.topic-badge::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: currentColor; }
.topic-badge--attack { background: rgba(234,92,31,0.18); color: var(--orange); border: 1px solid rgba(234,92,31,0.3); }
.topic-badge--defense { background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.72); border: 1px solid rgba(255,255,255,0.14); }
.article-hero__meta-sep { color: rgba(255,255,255,0.2); font-size: 14px; }
.article-hero__readtime, .article-hero__difficulty { font-size: 12px; font-weight: 600; color: rgba(255,255,255,0.45); display: inline-flex; align-items: center; gap: 5px; }
.article-hero__readtime i, .article-hero__difficulty i { font-size: 13px; }
.article-hero__title { font-size: 52px; font-weight: 800; color: var(--white); letter-spacing: -1.6px; line-height: 1.06; margin-bottom: 20px; max-width: 800px; }
.article-hero__lead { font-size: 17px; color: rgba(255,255,255,0.58); line-height: 1.75; max-width: 660px; }

/* ── ARTICLE BODY ── */
.article-body { background: var(--white); padding: 60px 0 88px; }
.article-layout { display: flex; gap: 56px; align-items: flex-start; }
.article-content { flex: 1; max-width: 720px; min-width: 0; }
.article-sidebar { width: 264px; flex-shrink: 0; position: sticky; top: 88px; }

/* ── TYPOGRAPHY ── */
.article-section { font-size: 24px; font-weight: 800; color: var(--text-dark); letter-spacing: -0.4px; line-height: 1.25; margin: 52px 0 18px; }
.article-content p { font-size: 16px; color: var(--slate); line-height: 1.82; margin-bottom: 22px; }
.article-content p:last-child { margin-bottom: 0; }
.article-content ul, .article-content ol { margin: 0 0 22px 22px; }
.article-content li { font-size: 16px; color: var(--slate); line-height: 1.75; margin-bottom: 10px; }
.article-content strong { color: var(--text-dark); font-weight: 700; }
.article-content a.text-link { color: var(--orange); font-weight: 600; }
.article-content a.text-link:hover { text-decoration: underline; }
.article-divider { height: 1px; background: var(--border-light); margin: 44px 0; }

/* ── KEY TERMS ── */
.key-terms { background: var(--off-white); border-radius: 16px; border-left: 4px solid var(--orange); padding: 24px 28px; margin-bottom: 48px; }
.key-terms__label { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.6px; color: var(--orange); margin-bottom: 18px; }
.key-terms__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 32px; }
.key-term__word { font-size: 13px; font-weight: 800; color: var(--text-dark); margin-bottom: 4px; }
.key-term__def { font-size: 12px; color: var(--text-muted); line-height: 1.6; }

/* ── CALLOUTS ── */
.callout { display: flex; gap: 16px; padding: 20px 24px; border-radius: 14px; margin: 28px 0; align-items: flex-start; }
.callout > i { font-size: 22px; flex-shrink: 0; margin-top: 1px; }
.callout__body strong { font-size: 14px; font-weight: 800; display: block; margin-bottom: 6px; }
.callout__body p { font-size: 14px; line-height: 1.7; margin: 0; }
.callout--insight { background: rgba(234,92,31,0.06); border: 1px solid rgba(234,92,31,0.18); }
.callout--insight > i, .callout--insight .callout__body strong { color: var(--orange); }
.callout--insight .callout__body p { color: var(--text-dark); }
.callout--warning { background: rgba(234,92,31,0.04); border: 1px solid rgba(234,92,31,0.14); }
.callout--warning > i, .callout--warning .callout__body strong { color: var(--orange-hover); }
.callout--warning .callout__body p { color: var(--slate); }
.callout--example { background: var(--navy); }
.callout--example > i { color: var(--orange); }
.callout--example .callout__body strong { color: var(--white); }
.callout--example .callout__body p { color: rgba(255,255,255,0.6); }
.callout--tip { background: rgba(79,93,117,0.06); border: 1px solid rgba(79,93,117,0.15); }
.callout--tip > i { color: var(--slate); }
.callout--tip .callout__body strong { color: var(--slate); }
.callout--tip .callout__body p { color: var(--text-muted); }

/* ── STEPS ── */
.steps-list { list-style: none; margin: 0 0 28px; padding: 0; }
.steps-list li { display: flex; gap: 20px; align-items: flex-start; padding: 20px 0; border-bottom: 1px solid var(--border-light); }
.steps-list li:last-child { border-bottom: none; padding-bottom: 0; }
.step-num { width: 34px; height: 34px; min-width: 34px; border-radius: 50%; background: linear-gradient(135deg, var(--orange), var(--orange-hover)); color: var(--white); font-size: 13px; font-weight: 800; display: flex; align-items: center; justify-content: center; }
.step-content strong { font-size: 15px; font-weight: 800; color: var(--text-dark); display: block; margin-bottom: 5px; }
.step-content p { font-size: 14px; color: var(--text-muted); line-height: 1.65; margin: 0; }

/* ── STAT GRID ── */
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 32px 0; }
.stat-box { background: var(--off-white); border-radius: 14px; padding: 22px 18px; text-align: center; border: 1px solid var(--border-light); }
.stat-box__num { font-size: 28px; font-weight: 800; color: var(--orange); letter-spacing: -1px; line-height: 1; margin-bottom: 8px; font-family: var(--font-mono); }
.stat-box__label { font-size: 12px; color: var(--text-muted); line-height: 1.5; font-weight: 600; }

/* ── INLINE ARTICLE CTA ── */
.article-cta { background: linear-gradient(145deg, var(--navy), var(--navy-light)); border-radius: 16px; padding: 28px 32px; margin: 44px 0; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.article-cta__eyebrow { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.4px; color: var(--orange); margin-bottom: 6px; }
.article-cta__title { font-size: 18px; font-weight: 800; color: var(--white); line-height: 1.3; margin-bottom: 4px; }
.article-cta__sub { font-size: 13px; color: rgba(255,255,255,0.45); }
.article-cta .btn { flex-shrink: 0; white-space: nowrap; }

/* ── SIDEBAR ── */
.sidebar-card { background: var(--white); border: 1px solid var(--border-light); border-radius: 16px; padding: 20px; margin-bottom: 18px; box-shadow: var(--shadow-xs); }
.sidebar-card__title { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.4px; color: var(--text-muted); margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--border-light); }
.toc-list { list-style: none; }
.toc-list li { margin-bottom: 2px; }
.toc-link { font-size: 12px; color: var(--text-muted); font-weight: 600; display: flex; align-items: center; gap: 8px; padding: 7px 8px; border-radius: 8px; transition: all 0.18s; cursor: pointer; }
.toc-link::before { content: ''; width: 4px; height: 4px; min-width: 4px; border-radius: 50%; background: var(--border-light); transition: background 0.18s; }
.toc-link:hover, .toc-link.active { background: rgba(234,92,31,0.07); color: var(--orange); }
.toc-link:hover::before, .toc-link.active::before { background: var(--orange); }
.topic-link-list { list-style: none; }
.topic-link-list li { margin-bottom: 2px; }
.topic-article-link { font-size: 12px; color: var(--text-muted); font-weight: 600; display: flex; align-items: flex-start; gap: 8px; padding: 7px 8px; border-radius: 8px; transition: all 0.18s; line-height: 1.4; }
.topic-article-link i { font-size: 13px; flex-shrink: 0; margin-top: 1px; color: var(--border-light); transition: color 0.18s; }
.topic-article-link:hover { background: var(--off-white); color: var(--text-dark); }
.topic-article-link:hover i { color: var(--orange); }
.topic-article-link--current { color: var(--orange); background: rgba(234,92,31,0.07); pointer-events: none; }
.topic-article-link--current i { color: var(--orange); }
.sidebar-enrol { background: linear-gradient(145deg, var(--navy), var(--navy-light)); border-radius: 16px; padding: 20px; margin-bottom: 18px; }
.sidebar-enrol__eyebrow { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.2px; color: var(--orange); margin-bottom: 8px; }
.sidebar-enrol__title { font-size: 15px; font-weight: 800; color: var(--white); line-height: 1.35; margin-bottom: 14px; }
.sidebar-enrol .btn { width: 100%; justify-content: center; padding: 10px 16px; font-size: 12px; border-radius: 10px; }

/* ── RELATED ARTICLES ── */
.related-section { background: var(--off-white); padding: 64px 0 72px; }
.related-section__header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 32px; }
.related-section__title { font-size: 26px; font-weight: 800; color: var(--text-dark); letter-spacing: -0.5px; }
.related-section__all { font-size: 13px; font-weight: 700; color: var(--orange); display: inline-flex; align-items: center; gap: 5px; }
.related-section__all:hover { text-decoration: underline; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.related-card { background: var(--white); border-radius: 16px; padding: 28px; border: 1px solid var(--border-light); transition: box-shadow 0.2s, transform 0.2s; display: flex; flex-direction: column; }
.related-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.related-card__icon { width: 44px; height: 44px; border-radius: 12px; background: var(--off-white); border: 1px solid var(--border-light); display: flex; align-items: center; justify-content: center; margin-bottom: 18px; transition: background 0.2s; }
.related-card__icon i { font-size: 22px; color: var(--navy); transition: color 0.2s; }
.related-card:hover .related-card__icon { background: rgba(234,92,31,0.08); border-color: rgba(234,92,31,0.2); }
.related-card:hover .related-card__icon i { color: var(--orange); }
.related-card__title { font-size: 15px; font-weight: 800; color: var(--text-dark); line-height: 1.4; margin-bottom: 10px; flex: 1; }
.related-card__excerpt { font-size: 13px; color: var(--text-muted); line-height: 1.65; }
.related-card__arrow { font-size: 18px; color: var(--text-muted); margin-top: 18px; display: block; transition: transform 0.2s, color 0.2s; }
.related-card:hover .related-card__arrow { transform: translateX(4px); color: var(--orange); }

/* ── ENROL STRIP ── */
.enrol-strip { background: linear-gradient(135deg, var(--navy), var(--navy-light)); padding: 64px 0; }
.enrol-strip__inner { display: flex; align-items: center; justify-content: space-between; gap: 48px; }
.enrol-strip__label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.6px; color: var(--orange); margin-bottom: 8px; }
.enrol-strip__title { font-size: 32px; font-weight: 800; color: var(--white); letter-spacing: -0.8px; line-height: 1.15; max-width: 600px; }
.enrol-strip__title span { color: var(--orange); }
.enrol-strip__btns { display: flex; gap: 12px; flex-shrink: 0; flex-wrap: wrap; }

/* ── FOOTER ── */
.footer { background: var(--navy); padding: 64px 0 0; color: rgba(255,255,255,0.7); }
.footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer__brand-logo { height: 44px; width: auto; margin-bottom: 16px; filter: brightness(0) invert(1); }
.footer__brand p { font-size: 14px; line-height: 1.7; max-width: 280px; }
.footer__social { display: flex; gap: 12px; margin-top: 24px; }
.footer__social-link { width: 36px; height: 36px; border-radius: 10px; background: rgba(255,255,255,0.08); display: flex; align-items: center; justify-content: center; transition: var(--transition); }
.footer__social-link:hover { background: var(--orange); }
.footer__social-link i { font-size: 18px; }
.footer__column h4 { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.4px; color: var(--white); margin-bottom: 20px; }
.footer__links { list-style: none; }
.footer__links li { margin-bottom: 10px; }
.footer__links a { font-size: 14px; color: rgba(255,255,255,0.55); transition: var(--transition); }
.footer__links a:hover { color: var(--white); }
.footer__bottom { display: flex; justify-content: space-between; align-items: center; padding: 24px 0; }
.footer__copyright { font-size: 13px; color: rgba(255,255,255,0.35); }
.footer__legal { display: flex; gap: 24px; }
.footer__legal a { font-size: 13px; color: rgba(255,255,255,0.35); transition: var(--transition); }
.footer__legal a:hover { color: var(--orange); }
.footer__trademark { font-size: 11px; color: rgba(255,255,255,0.2); text-align: center; padding: 10px 0 16px; border-top: 1px solid rgba(255,255,255,0.06); margin: 0; line-height: 1.5; }

/* ── REVEAL ── */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s cubic-bezier(0.4,0,0.2,1), transform 0.6s cubic-bezier(0.4,0,0.2,1); }
.reveal.active { opacity: 1; transform: none; }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
    .nav__dropdown { display: none !important; }
    .nav__caret { display: none; }
    .article-sidebar { display: none; }
}
@media (max-width: 768px) {
    .nav__menu { display: none; flex-direction: column; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: var(--white); padding: 100px 32px 48px; z-index: 999; gap: 32px; }
    .nav__menu.active { display: flex; }
    .nav__links { flex-direction: column; gap: 24px; text-align: center; }
    .nav__link { font-size: 18px; }
    .nav__hamburger { display: flex; z-index: 1000; position: relative; }
    .nav__hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav__hamburger.active span:nth-child(2) { opacity: 0; }
    .nav__hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    .article-hero { padding: 112px 0 48px; }
    .article-hero__title { font-size: 36px; letter-spacing: -1px; }
    .article-hero__lead { font-size: 15px; }
    .article-body { padding: 40px 0 64px; }
    .article-section { font-size: 21px; margin: 40px 0 14px; }
    .related-grid { grid-template-columns: 1fr; }
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .key-terms__grid { grid-template-columns: 1fr; }
    .article-cta { flex-direction: column; }
    .enrol-strip__inner { flex-direction: column; text-align: center; }
    .enrol-strip__btns { justify-content: center; }
    .footer__grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 480px) {
    .container { padding: 0 20px; }
    .article-hero__title { font-size: 30px; }
    .stat-grid { grid-template-columns: 1fr 1fr; }
    .footer__grid { grid-template-columns: 1fr; gap: 32px; }
    .footer__bottom { flex-direction: column; gap: 16px; text-align: center; }
}