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10px;border:none;background:transparent;color:#94a3b8e6;font-size:14px;font-weight:700;cursor:pointer;white-space:nowrap}.mm-sheet__tab.is-active{color:#93c5fdfa;font-weight:900}.mm-sheet__tab.is-active:after{content:"";position:absolute;left:50%;bottom:0;transform:translate(-50%);width:18px;height:3px;border-radius:999px;background:#2b7cee;box-shadow:0 0 10px #2b7cee80}.mm-sheet__tab-divider{width:1px;height:18px;background:#94a3b838;margin:0 8px 10px 0}.mm-sheet__refresh-wrap{padding:0 18px 8px 0;display:flex;align-items:flex-end}.mm-sheet__refresh{display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border-radius:999px;border:1px solid rgba(43,124,238,.25);background:#2b7cee1f;color:#93c5fdfa;font-size:12px;font-weight:900;cursor:pointer}.mm-sheet__refresh:disabled{opacity:.5;cursor:not-allowed}.mm-sheet__refresh .material-symbols-outlined{font-size:16px}.mm-sheet__body{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:16px 18px 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input:focus{outline:none}.library-error,.library-loading,.library-empty{margin-top:40px;text-align:center;color:#fffc}.library-list{margin-top:24px;display:flex;flex-direction:column;gap:16px}.library-card{background:#ffffff0a;border-radius:20px;padding:20px;border:1px solid rgba(255,255,255,.06)}.library-card-body h3{margin:6px 0 12px;font-size:20px}.library-content{color:#ffffffd9;line-height:1.6}.library-tags{margin-top:12px;display:flex;gap:8px;flex-wrap:wrap}.library-tags span{padding:4px 10px;border-radius:999px;background:#ffffff1a}.library-card-footer{margin-top:18px;display:flex;justify-content:space-between;align-items:center}.library-actions{display:flex;gap:8px}.detail-btn{border:1px solid rgba(255,255,255,.4);border-radius:12px;background:#ffffff14;color:#fff;padding:6px 12px;cursor:pointer}.delete-btn{border:1px solid rgba(255,255,255,.2);border-radius:12px;background:transparent;color:#fff;padding:6px 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infinite}.ud-illustration__card:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background-image:url(https://lh3.googleusercontent.com/aida-public/AB6AXuBLasg-kksKbMFEfAtDD0nIbsElgQhVfcBljp_YN_CizEubOXOG1-gJJrDHl6EZR1tCPZ1pV6u1wOLiHnCfDMi8KXh6M5tOMlN9QDy74jSfy_0JpM7pKxLTY6FQ0veJMzU4-gCA83szfeNYSQlGbk6SnNvBktfVt5KfsJ2SWTfpxd2WkG_9wvDzlalnERaStjAARVaJRqmNYBjh-9-0Mw5iZP3gMeTZZXO0XUb_aI8_yj2OTDCs0lui0sAEnfLuMoOfR3s5CxK_Mpg);background-size:cover;background-position:center;opacity:.9;mask-image:linear-gradient(to bottom,black 75%,transparent 100%);-webkit-mask-image:linear-gradient(to bottom,black 75%,transparent 100%)}.ud-illustration__badge{position:absolute;display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:12px;background:#111827d9;border:1px solid rgba(148,163,184,.2);font-size:10px;font-weight:700;letter-spacing:.6px;text-transform:uppercase;animation:ud-bounce 3s ease 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ease;font-weight:600}.start-button:hover{background:#ff5252;transform:translateY(-2px);box-shadow:0 12px 28px #ff6b6b66}.demo-links{margin-top:60px;padding:30px;background:#ffffff1a;border-radius:16px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.demo-links p{color:#fff;margin-bottom:16px;font-size:1.1rem}.demo-links button{background:#fff3;color:#fff;border:2px solid rgba(255,255,255,.3);padding:10px 24px;margin:0 8px;border-radius:24px;cursor:pointer;transition:all .3s ease;font-size:1rem}.demo-links button:hover{background:#ffffff4d;border-color:#ffffff80;transform:scale(1.05)}.step-container{max-width:900px;margin:0 auto;padding:20px;animation:fadeIn .4s ease-in}.step-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;padding:20px;background:#fff;border-radius:12px;box-shadow:0 4px 12px #0000001a}.step-header h2{color:#333;font-size:1.8rem;margin:0}.back-button{background:#6c757d;color:#fff;border:none;padding:10px 20px;border-radius:8px;cursor:pointer;transition:background .3s ease;font-size:.95rem}.back-button:hover{background:#5a6268}.mindmap-editor{background:#fff;border-radius:12px;padding:30px;box-shadow:0 4px 12px #0000001a;min-height:400px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 768px){.hero h1{font-size:2rem}.features{grid-template-columns:1fr}.step-header{flex-direction:column;gap:12px}.step-header h2{font-size:1.4rem}.demo-links button{display:block;width:100%;margin:8px 0}}