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4px}.hero-quick-actions{margin-bottom:6px}.hero-disclaimer{display:none}}#study-welcome-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0a0a0f8c;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:none;align-items:center;justify-content:center;z-index:100000}#study-welcome-overlay.active{display:flex!important}.welcome-modal-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-xl, 24px);padding:52px 44px 44px;width:400px;max-width:92vw;display:flex;flex-direction:column;align-items:center;text-align:center;box-shadow:var(--shadow-xl),0 0 80px #d977570f;animation:welcomeSlideUp .5s cubic-bezier(.16,1,.3,1);position:relative;overflow:hidden}.welcome-modal-card:before{content:"";position:absolute;top:-40%;left:50%;transform:translate(-50%);width:300px;height:200px;background:radial-gradient(ellipse,rgba(217,119,87,.1),transparent 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14px;background:transparent;border:1px solid var(--border-color);border-radius:var(--radius-full, 9999px);color:var(--text-secondary);font-size:12px;font-weight:600;font-family:var(--font-family);transition:all var(--transition-fast, .15s)}.welcome-feature .material-symbols-outlined{font-size:16px;color:var(--primary)}.welcome-start-btn{display:flex;align-items:center;gap:8px;background:var(--primary);color:#fff;padding:12px 32px;font-size:14px;font-weight:600;border-radius:var(--radius-full, 9999px);border:1px solid var(--primary);cursor:pointer;font-family:var(--font-family);transition:all var(--transition-fast, .15s);box-shadow:var(--glow-btn)}.welcome-start-btn:hover{background:var(--primary-hover);border-color:var(--primary-hover);transform:translateY(-2px);box-shadow:0 4px 20px var(--primary-glow-strong)}.welcome-start-btn:active{transform:translateY(0) scale(.97)}@media(max-width:480px){.welcome-modal-card{padding:36px 24px 32px;border-radius:var(--radius-lg, 16px)}.welcome-title{font-size:20px}.welcome-features{gap:6px}.welcome-feature{padding:6px 10px;font-size:11px}}