/* Focused development pages: the video is the main content. */
.challenge-detail{max-width:1010px}.detail-intro{max-width:820px;margin-bottom:30px}.detail-intro h1{font-size:clamp(1.7rem,4.7vw,2.8rem);overflow-wrap:anywhere}.detail-intro .lead{font-size:1rem}.detail-meta{display:flex;align-items:center;flex-wrap:wrap;gap:14px;color:var(--muted);font-size:.8rem}.genre-tag{background:#e4ebfb;border:1px solid #b5c5e5;border-radius:100px;padding:4px 12px;color:#334d82}.detail-video h2{font-size:1.3rem}.video-frame{aspect-ratio:16/9;background:var(--deep);border:2px solid var(--ink);border-radius:12px;overflow:hidden}.video-frame iframe{display:block;width:100%;height:100%;border:0}.detail-actions{display:flex;flex-wrap:wrap;gap:12px;margin:18px 0 14px}.game-button{background:#e5f4ee;color:#14543c;border-color:#14543c;box-shadow:0 3px 0 #14543c}.detail-chapters{background:#fff;border:1px solid var(--line);border-radius:8px;padding:13px 16px;margin:22px 0 40px}.detail-chapters summary{cursor:pointer;font-size:.9rem;font-weight:700;min-height:28px}.detail-chapters ol{list-style:none;padding:10px 0 0;margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 20px}.detail-chapters a{display:flex;align-items:baseline;gap:12px;font-size:.82rem;line-height:1.7;min-height:40px;padding:7px 0;text-decoration:none}.detail-chapters a:hover{text-decoration:underline}.chapter-time{font-variant-numeric:tabular-nums;min-width:3em;color:var(--muted);flex-shrink:0}.detail-copy{max-width:820px}.detail-section{margin:38px 0;scroll-margin-top:20px}.detail-section h2{font-size:1.45rem}.detail-section p{margin:14px 0;color:#33405b;font-size:.98rem;line-height:1.95}.detail-notes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.detail-note{display:flex;flex-direction:column;gap:10px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px;color:var(--ink);text-decoration:none;min-width:0}.detail-note:hover{border-color:#1b63d6}.detail-note time{font-size:.76rem;color:var(--muted)}.detail-note h3{margin:0;font-size:.96rem;line-height:1.7;overflow-wrap:anywhere}.detail-note>span{color:#1b63d6;font-size:.8rem;font-weight:700;margin-top:auto}.detail-source{font-size:.78rem;color:var(--muted);padding-top:18px;border-top:1px solid var(--line)}.detail-related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.detail-related{display:block;background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px;color:var(--ink);text-decoration:none;min-width:0}.detail-related:hover{border-color:#1b63d6}.day-label{font-size:.73rem;font-weight:800;letter-spacing:.1em;color:#526480}.detail-related h3{font-size:1rem;line-height:1.65;margin:10px 0;overflow-wrap:anywhere}.detail-related p{font-size:.8rem;line-height:1.6;color:var(--muted);margin:0}.detail-back{margin:34px 0 0}.detail-video{scroll-margin-top:20px}
@media(max-width:600px){.detail-intro{margin-bottom:24px}.detail-intro .lead{font-size:.9rem}.detail-intro h1{font-size:1.85rem}.detail-meta{font-size:.74rem;gap:8px 12px}.detail-chapters ol{grid-template-columns:1fr}.detail-chapters{padding:12px}.detail-notes,.detail-related-grid{grid-template-columns:1fr}.detail-section{margin:30px 0}.detail-section h2{font-size:1.3rem}.detail-section p{font-size:.91rem;line-height:1.9}.video-frame{border-radius:8px}.detail-actions{gap:10px}.detail-note,.detail-related{padding:16px}.detail-related h3{font-size:.96rem}}