*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-card: rgba(255, 255, 255, .03);--bg-card-hover: rgba(255, 255, 255, .06);--text-primary: #ffffff;--text-secondary: rgba(255, 255, 255, .6);--text-muted: rgba(255, 255, 255, .35);--accent-primary: #10b981;--accent-secondary: #059669;--accent-glow: rgba(16, 185, 129, .15);--danger: #f87171;--danger-glow: rgba(248, 113, 113, .15);--best-deal: #f59e0b;--best-deal-glow: rgba(245, 158, 11, .2);--border: rgba(255, 255, 255, .08);--border-focus: rgba(16, 185, 129, .5);--gradient-start: rgba(16, 185, 129, .08);--gradient-mid: rgba(5, 150, 105, .05);--gradient-end: rgba(245, 158, 11, .04);--radius-sm: 12px;--radius-md: 16px;--radius-lg: 24px;--radius-xl: 32px;--shadow-glow: 0 0 60px rgba(16, 185, 129, .1);--font-display: "Unbounded", sans-serif;--font-body: "Manrope", sans-serif;--safe-bottom: env(safe-area-inset-bottom, 20px)}[data-theme=light]{--bg-primary: #f8fafc;--bg-secondary: #ffffff;--bg-card: rgba(255, 255, 255, .8);--bg-card-hover: rgba(255, 255, 255, .95);--text-primary: #0f172a;--text-secondary: rgba(15, 23, 42, .65);--text-muted: rgba(15, 23, 42, .4);--accent-primary: #059669;--accent-secondary: #047857;--accent-glow: rgba(5, 150, 105, .12);--danger: #dc2626;--danger-glow: rgba(220, 38, 38, .1);--best-deal: #d97706;--best-deal-glow: rgba(217, 119, 6, .15);--border: rgba(15, 23, 42, .08);--border-focus: rgba(5, 150, 105, .4);--gradient-start: rgba(5, 150, 105, .06);--gradient-mid: rgba(4, 120, 87, .04);--gradient-end: rgba(217, 119, 6, .03);--shadow-glow: 0 0 60px rgba(5, 150, 105, .08)}[data-theme=light] .bg-gradient{background:radial-gradient(ellipse 80% 50% at 50% -20%,var(--gradient-start),transparent),radial-gradient(ellipse 60% 40% at 100% 50%,var(--gradient-mid),transparent),radial-gradient(ellipse 50% 30% at 0% 80%,var(--gradient-end),transparent)}[data-theme=light] .calc-card,[data-theme=light] .product-card{box-shadow:0 4px 24px #0000000f}[data-theme=light] .input-field,[data-theme=light] .price-box{background:var(--bg-primary)}html,body{font-family:var(--font-body);background:var(--bg-primary);color:var(--text-primary);min-height:100vh;min-height:100dvh;overflow-x:hidden}body{padding-bottom:calc(100px + var(--safe-bottom))}.bg-gradient{position:fixed;top:0;left:0;right:0;bottom:0;background:radial-gradient(ellipse 80% 50% at 50% -20%,rgba(110,231,183,.08),transparent),radial-gradient(ellipse 60% 40% at 100% 50%,rgba(52,211,153,.05),transparent),radial-gradient(ellipse 50% 30% at 0% 80%,rgba(251,191,36,.04),transparent);pointer-events:none;z-index:0}.container{position:relative;z-index:1;max-width:480px;margin:0 auto;padding:0 20px}header{padding:24px 0 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.theme-btn{color:#0f172a80}.theme-btn:hover{color:var(--text-primary);background:var(--bg-secondary)}.theme-btn.active{background:var(--accent-glow);color:var(--accent-primary)}.theme-btn svg{width:18px;height:18px}.calc-card{background:var(--bg-card);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:var(--radius-xl);padding:24px;margin-bottom:24px;animation:slideUp .5s ease-out}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.calc-title{font-family:var(--font-display);font-size:1.1rem;font-weight:600;margin-bottom:20px;display:flex;align-items:center;gap:10px}.calc-title-icon{width:32px;height:32px;background:var(--accent-glow);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center}.input-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:20px}.input-group{position:relative}.input-group.full{grid-column:1 / 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var(--border);border-radius:var(--radius-md);padding:14px 16px;font-family:var(--font-body);font-size:1rem;color:var(--text-primary);margin-bottom:20px}.modal-input:focus{outline:none;border-color:var(--border-focus)}.modal-buttons{display:flex;gap:10px}.modal-btn{flex:1;padding:14px;border-radius:var(--radius-md);font-family:var(--font-display);font-size:.9rem;font-weight:600;cursor:pointer;transition:all .2s}.modal-btn.cancel{background:var(--bg-card);border:1px solid var(--border);color:var(--text-secondary)}.modal-btn.confirm{background:var(--accent-primary);border:none;color:var(--bg-primary)}.modal-btn:active{transform:scale(.97)}.confirm-modal .modal{max-width:320px}.confirm-modal .modal-text{color:var(--text-secondary);font-size:.9rem;margin-bottom:20px;line-height:1.5}.modal-btn.danger{background:#ef444426;border:1px solid rgba(239,68,68,.3);color:#f87171}.modal-btn.danger:hover{background:#ef444440;border-color:#ef444480}[data-theme=light] 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.2s;width:32px;height:32px}.tutorial-close:hover{color:var(--text-primary)}.tutorial-close svg{width:100%;height:100%}.tutorial-slide-container{text-align:center;padding:20px 0 40px;min-height:280px;display:flex;flex-direction:column;justify-content:center}.tutorial-slide-enter{animation:slideInRight .3s ease-out}.tutorial-slide-exit{animation:slideOutLeft .3s ease-out}.tutorial-slide-enter-back{animation:slideInLeft .3s ease-out}.tutorial-slide-exit-back{animation:slideOutRight .3s ease-out}@keyframes slideInRight{0%{opacity:0;transform:translate(50px)}to{opacity:1;transform:translate(0)}}@keyframes slideOutLeft{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(-50px)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-50px)}to{opacity:1;transform:translate(0)}}@keyframes slideOutRight{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(50px)}}.tutorial-slide-fade-in{animation:fadeIn .3s ease-out}.tutorial-slide-fade-out{animation:fadeOut .3s ease-out}@keyframes fadeIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes fadeOut{0%{opacity:1;transform:scale(1)}to{opacity:0;transform:scale(.95)}}.tutorial-emoji{font-size:64px;margin-bottom:20px;line-height:1}.tutorial-title{font-family:var(--font-display);font-size:24px;font-weight:600;color:var(--text-primary);margin-bottom:16px;line-height:1.3}.tutorial-text{font-size:18px;color:var(--text-secondary);line-height:1.6;max-width:480px;margin:0 auto}.tutorial-text strong{color:var(--accent-primary);font-weight:600}.tutorial-image{max-width:100%;height:auto;margin-top:24px;border-radius:var(--radius-md);border:1px solid var(--border)}.tutorial-navigation{display:flex;justify-content:space-between;align-items:center;padding-top:24px;border-top:1px solid var(--border);gap:16px}.tutorial-btn{padding:12px 24px;border-radius:var(--radius-md);border:none;font-size:16px;font-weight:500;cursor:pointer;transition:all .2s;background:var(--bg-secondary);color:var(--text-primary)}.tutorial-btn:hover{background:var(--bg-card-hover);transform:translateY(-1px)}.tutorial-btn.accent{background:var(--accent-primary);color:#fff}.tutorial-btn.accent:hover{background:var(--accent-secondary)}.tutorial-skip{padding:8px 16px;font-size:14px;opacity:.7}.tutorial-buttons{display:flex;gap:12px}.tutorial-dots{display:flex;gap:8px;align-items:center}.tutorial-dot{width:8px;height:8px;border-radius:50%;background:var(--text-muted);transition:all .3s;opacity:.3}.tutorial-dot.active{width:24px;border-radius:4px;background:var(--accent-primary);opacity:1}@media(max-width:640px){.tutorial-content{padding:32px 24px 24px}.tutorial-title{font-size:20px}.tutorial-text{font-size:16px}.tutorial-emoji{font-size:48px}.tutorial-navigation{flex-wrap:wrap}.tutorial-skip{order:3;width:100%;margin-top:8px}.tutorial-dots{order:1}.tutorial-buttons{order:2}}#helpBtn svg{width:20px;height:20px}