/* Each level has its own restrained colour; text and dates stay explicit. */
.level-senior{--level-tint:#fbedef;--level-ink:#92364d}
.level-intermediate{--level-tint:#eaf1fc;--level-ink:#285b99}
.level-junior{--level-tint:#fff4df;--level-ink:#85561c}
.level-primary{--level-tint:#e9f5ed;--level-ink:#286c48}
#main>.challenge-level-hero{background:var(--level-tint);border-bottom:1px solid #dbe2e6}
#main>.challenge-level-hero .hero-composition{display:grid;grid-template-columns:minmax(0,1fr) 240px;align-items:center;gap:60px;padding-block:64px}
#main>.challenge-level-hero .hero-inner{padding:0}
#main>.challenge-level-hero .eyebrow{color:var(--level-ink);font-size:.8rem;font-weight:650;letter-spacing:.07em;margin-bottom:18px}
#main>.challenge-level-hero h1{color:#142f43;margin-top:0}
#main>.challenge-level-hero .lead{color:#465c6c;max-width:740px;line-height:1.65}
.challenge-hero-date{color:var(--level-ink);border-left:1px solid currentColor;padding-left:36px}
.challenge-hero-date>span{display:block;font-size:.85rem;font-weight:600;margin-bottom:12px}
.challenge-hero-date time{display:block;font-size:1.1rem;line-height:1.5}
.challenge-hero-date strong{display:block;font-size:clamp(4rem,8vw,7rem);line-height:1;letter-spacing:-.045em;font-weight:650;margin-bottom:10px}
@media(max-width:760px){#main>.challenge-level-hero .hero-composition{grid-template-columns:1fr;gap:32px;padding-block:40px}.challenge-hero-date{border-left:0;border-top:1px solid currentColor;padding:20px 0 0}.challenge-hero-date time{display:flex;align-items:baseline;gap:12px}.challenge-hero-date strong{font-size:2.5rem;margin:0}}
/* Related preparation tasks share one compact, two-column section. */
.challenge-preparation{padding:56px 0;background:#f6f8fb}
.preparation-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.preparation-card{padding:32px;background:#eaf2fc;border-top:3px solid #3972a7;border-radius:6px;min-width:0}
.preparation-card-1{background:#eaf5ef;border-color:#3e8060}
#main .preparation-card>.wrap.section-inner{display:block;width:100%;max-width:none;margin:0;padding:0}
.preparation-card .section-heading{margin:0 0 22px}
.preparation-card .section-heading h2{font-size:clamp(1.5rem,2.5vw,2rem);line-height:1.2;margin:0 0 16px;color:#142f43}
.preparation-card .section-heading p{font-size:1rem;line-height:1.7;color:#465c6c;margin:0;max-width:none}
.preparation-card .text-links{margin:0;display:flex;flex-wrap:wrap;gap:12px 24px}
.preparation-card .text-links a{min-height:44px;display:inline-flex;align-items:center;gap:12px}
@media(max-width:700px){.challenge-preparation{padding:32px 0}.preparation-grid{grid-template-columns:1fr;gap:18px}.preparation-card{padding:26px 22px}}