.app-desktop{display:flex;height:100vh;overflow:hidden}.app-mobile{display:flex;flex-direction:column;height:100vh;height:100dvh;overflow:hidden}.sidebar{width:220px;background:var(--card);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0}.sidebar-logo{padding:20px 20px 16px;border-bottom:1px solid var(--border-soft);display:flex;align-items:center;gap:10px}.sidebar-badge{width:32px;height:32px;background:var(--primary);border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:15px}.sidebar-title{font-weight:600;font-size:14px;color:var(--text)}.sidebar-sub{font-size:11px;color:var(--text-faint)}.sidebar-nav{padding:12px 10px;display:flex;flex-direction:column;gap:2px;flex:1}.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:8px;cursor:pointer;font-size:13px;font-weight:500;transition:all .15s;background:transparent;color:var(--text-muted)}.nav-item.active{background:var(--indigo-soft);color:var(--primary)}.nav-item-icon{font-size:16px}.sidebar-footer{padding:16px;border-top:1px solid var(--border-soft)}.sidebar-streak{display:flex;align-items:center;gap:6px;margin-bottom:10px;font-size:12px;color:var(--text-muted)}.sidebar-streak-num{font-weight:700;color:var(--amber)}.sidebar-theme-btn{width:100%;padding:6px 8px;font-size:11px;border-radius:6px;cursor:pointer;background:var(--bg);color:var(--text-muted);border:1px solid var(--border)}.main-desktop,.main-mobile{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}.mobile-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:var(--card);border-bottom:1px solid var(--border);flex-shrink:0;padding-top:env(safe-area-inset-top,10px);padding-left:max(16px,env(safe-area-inset-left));padding-right:max(16px,env(safe-area-inset-right))}.mobile-header-left{display:flex;align-items:center;gap:8px}.mobile-badge{width:28px;height:28px;background:var(--primary);border-radius:7px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:13px}.mobile-title{font-weight:600;font-size:15px;color:var(--text)}.mobile-theme-btn{width:36px;height:36px;border-radius:8px;border:1px solid var(--border);background:var(--bg);cursor:pointer;font-size:16px}.mobile-tabbar{display:flex;background:var(--card);border-top:1px solid var(--border);flex-shrink:0;padding-bottom:env(safe-area-inset-bottom,0)}.tab-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 0;cursor:pointer;color:var(--text-faint);transition:color .15s}.tab-item.active{color:var(--primary)}.tab-icon{font-size:20px}.tab-label{font-size:11px}:root{--primary: #4f46e5;--primary-hover: #4338ca;--primary-light: #6366f1;--bg: #f3f4f6;--card: #ffffff;--text: #1a1a2e;--text-muted: #6b7280;--text-faint: #9ca3af;--border: #e5e7eb;--border-soft: #f0f0f0;--green: #10b981;--amber: #f59e0b;--red: #ef4444;--indigo-soft: #eef2ff;--hover: #f9fafb;--shadow: 0 2px 12px rgba(0,0,0,.06)}html[data-theme=dark]{--primary: #6366f1;--primary-hover: #818cf8;--primary-light: #818cf8;--bg: #14161f;--card: #1e2230;--text: #e8eaf2;--text-muted: #9ca3af;--text-faint: #6b7280;--border: #2a2f3e;--border-soft: #252938;--green: #34d399;--amber: #fbbf24;--red: #f87171;--indigo-soft: #1e1b4b;--hover: #252938;--shadow: 0 2px 12px rgba(0,0,0,.4)}*{box-sizing:border-box}body{margin:0;background:var(--bg);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--text);-webkit-font-smoothing:antialiased;transition:background .2s,color .2s}button{font-family:inherit}@keyframes flipIn{0%{transform:rotateX(90deg);opacity:0}to{transform:rotateX(0);opacity:1}}@keyframes fadeUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes checkmark{0%{transform:scale(0);opacity:0}50%{transform:scale(1.2)}to{transform:scale(1);opacity:1}}@keyframes confettiFall{0%{transform:translateY(-100vh) rotate(0);opacity:1}to{transform:translateY(100vh) rotate(720deg);opacity:0}}@keyframes swipeHint{0%,to{transform:translate(0);opacity:.4}50%{transform:translate(0);opacity:1}}