.challenge-banner{background:linear-gradient(110deg,#0E3D33,#226052);color:#fff;padding:30px;border-radius:24px;margin:20px 0 24px}.challenge-banner h2{font:700 clamp(26px,4vw,42px) Georgia,serif;color:#fff;margin:12px 0}.challenge-banner p{color:#e8dcc8;max-width:720px;line-height:1.5}.challenge-banner .v28-kicker{color:#e6be91}.challenge-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,290px),1fr));gap:18px}.challenge-card{background:#fff;border:1px solid #e8dcc8;border-radius:20px;padding:24px;margin-bottom:18px;min-width:0}.challenge-link{width:100%;text-align:left;cursor:pointer;color:inherit}.challenge-link h3{font-size:21px;margin:14px 0 10px}.challenge-link p{line-height:1.55;color:#68736f}.challenge-status{background:#f4e5d4;color:#855021;border-radius:18px;font-size:12px;font-weight:700;padding:6px 10px;display:inline-block}.challenge-meta{display:flex;gap:12px;flex-wrap:wrap;margin:15px 0;color:#6e7974;font-size:13px}.challenge-go{font-weight:700;color:#0E3D33}.challenge-layout{display:grid;grid-template-columns:minmax(0,1fr) 265px;gap:22px;align-items:start}.challenge-layout>div{min-width:0}.challenge-sidebar{position:sticky;top:15px}.challenge-hint{background:#f9f5ec;padding:14px;border-radius:12px;color:#445650;font-size:14px;line-height:1.55}.challenge-step{padding:14px 0;border-bottom:1px solid #e8dcc8}.challenge-step.done{color:#15704a;font-weight:700}.challenge-form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.challenge-card .field{margin-bottom:16px}.challenge-card textarea{width:100%;min-height:95px;border-radius:12px;border:1px solid #d8d3c9;padding:14px;font:inherit}.challenge-checks{display:flex;gap:20px;flex-wrap:wrap;margin:10px 0 22px}.challenge-checks label{display:flex;gap:8px;align-items:center}.challenge-post{background:#fff;border:1px solid #e8dcc8;padding:18px;border-radius:16px;margin:12px 0;overflow-wrap:anywhere}.challenge-featured{border-color:#c27a3f;background:#fffaf2}.challenge-hidden{opacity:.6}.challenge-thread{margin:18px 0}.challenge-thread>.challenge-post:not(:first-child){margin-left:28px;background:#faf7f1}.challenge-author{display:flex;gap:12px;justify-content:space-between;align-items:center}.challenge-author small{display:block;font-size:12px;color:#7c8580;margin-top:4px}.challenge-post p{margin:16px 0;line-height:1.6;white-space:pre-wrap}.challenge-post audio,.challenge-audio audio{width:100%;max-width:540px;margin:10px 0}.challenge-post-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}.challenge-composer{display:grid;gap:12px}.challenge-audio{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.challenge-audio>div{width:100%}.challenge-insight-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.challenge-insight-grid>div{background:#f9f5ec;padding:15px;border-radius:12px;text-align:center}.challenge-insight-grid b{display:block;font-size:23px;color:#0e3d33}.challenge-insight-grid small{font-size:11px;color:#66736e}.challenge-student{display:flex;justify-content:space-between;border-bottom:1px solid #eee;padding:12px 0;gap:10px;font-size:14px}@media(max-width:780px){.challenge-layout{grid-template-columns:1fr}.challenge-sidebar{position:static}.challenge-form-grid{grid-template-columns:1fr}.challenge-banner{padding:23px 20px}.challenge-card{padding:18px}.challenge-thread>.challenge-post:not(:first-child){margin-left:14px}}