.daily7-challenge-card{background:white;border-radius:var(--daily7-radius-lg);box-shadow:var(--daily7-shadow-sm);padding:40px;margin:0 auto 32px;max-width:600px;border:1px solid var(--daily7-gray-200);transition:var(--daily7-transition-slow);animation:fadeIn 0.3s cubic-bezier(0.4,0,0.2,1)}.daily7-challenge-content{padding:0 40px 32px;max-width:600px;margin:0 auto;animation:fadeIn 0.3s cubic-bezier(0.4,0,0.2,1)}.daily7-challenge-header{display:flex;justify-content:center;align-items:center;margin-bottom:24px;gap:16px;position:relative}.daily7-challenge-badges{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.daily7-edit-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:var(--daily7-gray-100);color:var(--daily7-gray-600);border:1.5px solid var(--daily7-gray-300);transition:var(--daily7-transition);text-decoration:none;cursor:pointer;position:absolute;right:0;top:0}.daily7-edit-btn:hover{background:var(--daily7-primary);border-color:var(--daily7-primary);color:white;transform:scale(1.05);box-shadow:var(--daily7-shadow-sm);text-decoration:none}.daily7-edit-btn:active{transform:scale(0.98)}.daily7-edit-btn i{font-size:0.875rem}.daily7-badge{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:20px;font-size:0.8125rem;font-weight:600;letter-spacing:-0.01em}.daily7-badge i{font-size:0.875em}.daily7-badge-points{background:linear-gradient(135deg,#eff6ff 0%,#dbeafe 100%);color:var(--daily7-primary);border:1px solid #bfdbfe}.daily7-badge-solvers{background:var(--daily7-gray-100);color:var(--daily7-gray-600);border:1px solid var(--daily7-gray-200)}.daily7-badge-solved{background:linear-gradient(135deg,#d1fae5 0%,#a7f3d0 100%);color:var(--daily7-success-dark);border:1px solid #6ee7b7}.daily7-challenge-description{font-size:1rem;line-height:1.75;color:var(--daily7-gray-700);margin-bottom:28px}.daily7-challenge-description h1,.daily7-challenge-description h2,.daily7-challenge-description h3,.daily7-challenge-description h4{margin-top:1.75rem;margin-bottom:0.875rem;font-weight:600;color:var(--daily7-gray-900);letter-spacing:-0.02em}.daily7-challenge-description h1{font-size:1.5rem}.daily7-challenge-description h2{font-size:1.25rem}.daily7-challenge-description h3{font-size:1.125rem}.daily7-challenge-description code{background:var(--daily7-gray-100);padding:3px 7px;border-radius:4px;font-size:0.9em;color:var(--daily7-gray-700);border:1px solid var(--daily7-gray-200);font-family:'SF Mono',Monaco,'Cascadia Code','Roboto Mono',Consolas,'Courier New',monospace;word-wrap:break-word;overflow-wrap:break-word}.daily7-challenge-description pre{background:var(--daily7-gray-100);padding:20px;border-radius:var(--daily7-radius);overflow-x:auto;margin:20px 0;border:1px solid var(--daily7-gray-200);white-space:pre-wrap;word-wrap:break-word;overflow-wrap:break-word}.daily7-challenge-description pre code{background:none;padding:0;border:none;font-size:0.875rem;white-space:pre-wrap;word-wrap:break-word}.daily7-challenge-description ul,.daily7-challenge-description ol{margin-left:24px;margin-bottom:20px}.daily7-challenge-description li{margin-bottom:8px}.daily7-challenge-description blockquote{border-left:3px solid var(--daily7-primary);padding-left:20px;margin:20px 0;color:var(--daily7-gray-600);font-style:italic}.daily7-challenge-description a{color:var(--daily7-primary);text-decoration:none;border-bottom:1px solid transparent;transition:var(--daily7-transition)}.daily7-challenge-description a:hover{border-bottom-color:var(--daily7-primary)}.daily7-challenge-description .code-container{position:relative;margin:20px 0}.daily7-challenge-description .code-container pre{margin:0}.daily7-challenge-description .copy-button{position:absolute;top:12px;right:12px;padding:8px 16px;background:rgba(255,255,255,0.95);backdrop-filter:blur(10px);color:var(--daily7-gray-700);border:1.5px solid var(--daily7-gray-300);border-radius:8px;cursor:pointer;font-size:0.8125rem;font-weight:600;letter-spacing:-0.01em;transition:var(--daily7-transition);box-shadow:0 2px 4px rgba(0,0,0,0.06);font-family:"Nunito Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.daily7-challenge-description .copy-button:hover{background:var(--daily7-primary);border-color:var(--daily7-primary);color:white;transform:translateY(-2px);box-shadow:0 4px 12px rgba(37,99,235,0.25)}.daily7-challenge-description .copy-button:active{transform:translateY(0);box-shadow:0 2px 4px rgba(37,99,235,0.2)}.daily7-challenge-description .copy-button.copied{background:var(--daily7-success);border-color:var(--daily7-success);color:white;transform:scale(1.05)}.daily7-answer-group{margin-bottom:20px}.daily7-answer-input{width:100%;padding:14px 16px;font-size:1rem;border:1.5px solid var(--daily7-gray-300);border-radius:var(--daily7-radius);transition:var(--daily7-transition);background:white;color:var(--daily7-gray-900);font-family:inherit}.daily7-answer-input::placeholder{color:var(--daily7-gray-400)}.daily7-answer-input:focus{outline:none;border-color:var(--daily7-primary);box-shadow:0 0 0 4px rgba(37,99,235,0.1)}.daily7-answer-input:disabled{background:var(--daily7-gray-50);cursor:not-allowed;opacity:0.7}.daily7-hint{font-size:0.875rem;color:var(--daily7-gray-500);margin-top:10px;display:flex;align-items:flex-start;gap:8px}.daily7-hint i{margin-top:2px;color:var(--daily7-gray-400)}.daily7-submit-btn{width:100%;padding:16px 24px;font-size:1rem;font-weight:600;background:var(--daily7-primary);color:white;border:none;border-radius:var(--daily7-radius);cursor:pointer;transition:var(--daily7-transition);display:flex;align-items:center;justify-content:center;gap:8px;letter-spacing:-0.01em}.daily7-submit-btn:hover:not(:disabled){background:var(--daily7-primary-dark);transform:translateY(-1px);box-shadow:var(--daily7-shadow-lg)}.daily7-submit-btn:active:not(:disabled){transform:translateY(0)}.daily7-submit-btn:disabled{opacity:0.6;cursor:not-allowed}@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-8px)}75%{transform:translateX(8px)}}.daily7-challenge-card.shake{animation:shake 0.4s cubic-bezier(0.4,0,0.2,1)}.check_mark{display:flex;justify-content:center;margin-top:24px}.sa-icon{width:80px;height:80px;border:4px solid var(--daily7-success);border-radius:50%;margin:20px auto;padding:0;position:relative;box-sizing:content-box}.sa-success{border-color:var(--daily7-success)}.sa-success::before,.sa-success::after{content:'';border-radius:50%;position:absolute;width:60px;height:120px;background:white;transform:rotate(45deg)}.sa-success::before{border-radius:120px 0 0 120px;top:-7px;left:-33px;transform:rotate(-45deg);transform-origin:60px 60px}.sa-success::after{border-radius:0 120px 120px 0;top:-11px;left:30px;transform:rotate(-45deg);transform-origin:0 60px}.sa-placeholder{width:80px;height:80px;border:4px solid rgba(16,185,129,0.2);border-radius:50%;box-sizing:content-box;position:absolute;left:-4px;top:-4px;z-index:2}.sa-fix{width:5px;height:90px;background-color:white;position:absolute;left:28px;top:8px;z-index:1;transform:rotate(-45deg)}.sa-line{height:5px;background-color:var(--daily7-success);display:block;border-radius:2px;position:absolute;z-index:2}.sa-line.sa-tip{width:25px;left:14px;top:46px;transform:rotate(45deg)}.sa-line.sa-long{width:47px;right:8px;top:38px;transform:rotate(-45deg)}@keyframes animateSuccessTip{0%,54%{width:0;left:1px;top:19px}70%{width:50px;left:-8px;top:37px}84%{width:17px;left:21px;top:48px}100%{width:25px;left:14px;top:45px}}@keyframes animateSuccessLong{0%,65%{width:0;right:46px;top:54px}84%{width:55px;right:0;top:35px}100%{width:47px;right:8px;top:38px}}.animateSuccessTip{animation:animateSuccessTip 0.75s}.animateSuccessLong{animation:animateSuccessLong 0.75s}@media (max-width:768px){.daily7-challenge-card{padding:28px;margin:0 16px 20px}.daily7-challenge-content{padding:0 28px 24px}.daily7-challenge-description{font-size:0.9375rem}.daily7-submit-btn{padding:14px 20px}.daily7-edit-btn{width:32px;height:32px}.daily7-edit-btn i{font-size:0.8125rem}}@media (max-width:480px){.daily7-challenge-card{padding:24px;margin:0 16px 16px}.daily7-challenge-content{padding:0 24px 20px}.daily7-badge{font-size:0.75rem;padding:6px 12px}}