*{box-sizing:border-box}body{margin:0;min-height:100vh;padding:34px 18px 60px;color:var(--amb-ink);line-height:1.65;position:relative;overflow-x:hidden;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:radial-gradient(1100px 720px at 12% -8%,color-mix(in oklab,#7c6cff 24%,transparent),transparent 55%),radial-gradient(900px 650px at 112% 4%,color-mix(in oklab,#36d1c4 20%,transparent),transparent 52%),var(--amb-bg)}.orb{position:fixed;border-radius:50%;filter:blur(72px);z-index:0;pointer-events:none;opacity:.45}.orb.a{width:360px;height:360px;background:#7c6cff;top:-90px;left:-70px}.orb.b{width:300px;height:300px;background:#36d1c4;bottom:-110px;right:-50px}.wrap{max-width:760px;margin:0 auto;position:relative;z-index:1}.back{display:inline-block;text-decoration:none;color:var(--amb-muted);font-weight:600;font-size:.92rem;margin:0 0 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var(--amb-card-brd);box-shadow:0 18px 44px -22px #0000008c}figure.hero img{display:block;width:100%;height:clamp(180px,32vw,300px);object-fit:cover}figure.hero figcaption{position:absolute;bottom:6px;right:10px;font-size:10px;color:#fff;text-shadow:0 1px 4px rgba(0,0,0,.85)}.videolbl{font-size:.78rem;font-weight:800;letter-spacing:.05em;text-transform:uppercase;color:var(--amb-brand-teal);margin:0 0 8px}.videowrap{position:relative;margin:0 0 24px;border-radius:14px;overflow:hidden;border:1px solid var(--amb-card-brd);background:#000;aspect-ratio:16 / 9}.videowrap iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.body{font-size:1.03rem}.body h2{font-size:1.3rem;margin:30px 0 8px;color:var(--amb-ink);line-height:1.2}.body p{margin:0 0 14px;color:var(--amb-body)}.body strong{color:var(--amb-ink)}.body ul{margin:4px 0 16px;padding:0;list-style:none;display:grid;gap:8px}.body ul li{position:relative;padding-left:24px;color:var(--amb-body)}.body ul 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0 12px;color:var(--amb-ink)}.opt{display:block;width:100%;text-align:left;border:1px solid var(--amb-card-brd);border-radius:10px;padding:11px 14px;margin:0 0 8px;background:var(--amb-input);color:var(--amb-ink);font:inherit;cursor:pointer;transition:border-color .15s ease,background .15s ease}.opt:hover{border-color:var(--amb-teal-brd)}.opt .why{display:none;margin:7px 0 0;font-size:.9rem;color:var(--amb-body)}.q.answered .opt{cursor:default}.q.answered .opt .why{display:block}.opt.correct{border-color:#36d1c4;background:color-mix(in oklab,#36d1c4 14%,var(--amb-input))}.opt.wrong{border-color:#e0576b;background:color-mix(in oklab,#e0576b 12%,var(--amb-input))}.opt .mark{font-weight:800;margin-right:6px}.lookfor{border:1px dashed var(--amb-teal-brd);border-radius:14px;padding:15px 18px;margin:24px 0 8px;background:color-mix(in oklab,var(--amb-card) 45%,transparent)}.lookfor .lbl{font-size:.72rem;font-weight:800;letter-spacing:.05em;text-transform:uppercase;color:var(--amb-brand-teal)}.lookfor p{margin:5px 0 0;color:var(--amb-body)}.complete{margin:26px 0 4px}.cbtn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--amb-teal-brd);border-radius:999px;padding:12px 22px;background:color-mix(in oklab,#36d1c4 12%,transparent);color:var(--amb-ink);font:inherit;font-weight:700;cursor:pointer}.cbtn.done{background:linear-gradient(120deg,#36d1c4,#7c6cff);color:#fff;border-color:transparent}.nav{display:flex;justify-content:space-between;gap:12px;margin:34px 0 0;flex-wrap:wrap}.nav a{flex:1 1 200px;text-decoration:none;border:1px solid var(--amb-card-brd);border-radius:12px;padding:12px 16px;color:var(--amb-ink);background:color-mix(in oklab,var(--amb-card) 55%,transparent)}.nav a:hover{border-color:var(--amb-teal-brd)}.nav .dir{font-size:.72rem;font-weight:800;letter-spacing:.05em;text-transform:uppercase;color:var(--amb-muted)}.nav a.n{text-align:right}.nav a .t{display:block;font-weight:700;margin-top:2px}