*,:before,:after{box-sizing:border-box}body{margin:0;padding:0}:root{--onyx:#0d1117;--graphite:#22262c;--titanium:#4a4f57;--silver:#c9ccd1;--electric:#009bff;--electric-light:#33adff;--deep-blue:#2b6faf;--primary-dark:#1e4f80;--primary-light:#3f82c6;--light-surface:#eef1f4;--wordmark-light:#f4f6f8;--bg-primary:var(--onyx);--bg-card:var(--graphite);--bg-card-hover:#2a2f37;--bg-input:#181c23;--text-primary:var(--wordmark-light);--text-secondary:var(--silver);--text-muted:var(--titanium);--accent:var(--electric);--accent-hover:var(--electric-light);--border:#c9ccd124;--border-focus:var(--electric);--error:#ef4444;--success:#22c55e;--font-body:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-brand:"Space Grotesk", var(--font-body);--nav-height:60px;--max-width:1200px;--section-pad:80px;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-xl:24px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);color:var(--text-primary);background:var(--bg-primary);-webkit-font-smoothing:antialiased;min-height:100vh;font-size:15px}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover)}.btn-primary,.btn-secondary,.btn-outline{font-family:var(--font-body);border-radius:var(--radius-md);cursor:pointer;white-space:nowrap;border:none;justify-content:center;align-items:center;gap:8px;font-weight:600;transition:all .15s;display:inline-flex}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-primary.btn-success{background:var(--success)}.btn-secondary{background:var(--bg-card);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg-card-hover)}.btn-outline{color:var(--text-primary);border:1px solid var(--border);background:0 0}.btn-outline:hover{border-color:var(--accent);color:var(--accent)}.btn-danger{color:var(--error)!important}.btn-danger:hover{border-color:var(--error)!important}.btn-xs{border-radius:var(--radius-sm);padding:4px 10px;font-size:12px}.btn-sm{padding:7px 16px;font-size:13px}.btn-md{padding:10px 22px;font-size:14px}.btn-lg{border-radius:12px;padding:14px 32px;font-size:16px}.btn-full{width:100%}.link-accent{color:var(--accent)}.link-accent:hover{color:var(--accent-hover);text-decoration:underline}.text-muted{color:var(--text-muted);font-size:14px}.navbar{z-index:50;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);height:var(--nav-height);background:#0d1117d9;position:sticky;top:0}.navbar-inner{max-width:var(--max-width);justify-content:space-between;align-items:center;height:100%;margin:0 auto;padding:0 24px;display:flex}.navbar-brand{align-items:center;line-height:0;display:flex}.navbar-links{align-items:center;gap:6px;display:flex}.nav-link{color:var(--text-secondary);border-radius:var(--radius-sm);padding:6px 12px;font-size:14px;font-weight:500;transition:color .15s}.nav-link:hover{color:var(--text-primary)}.nav-link--btn{cursor:pointer;font-family:var(--font-body);background:0 0;border:none}.footer{background:var(--graphite);border-top:1px solid var(--border);margin-top:auto;padding:48px 24px 24px}.footer-inner{max-width:var(--max-width);flex-wrap:wrap;justify-content:space-between;gap:48px;margin:0 auto;display:flex}.footer-brand{max-width:320px}.footer-tagline{color:var(--text-muted);margin-top:12px;font-size:14px;line-height:1.5}.footer-columns{gap:64px;display:flex}.footer-col{flex-direction:column;gap:8px;display:flex}.footer-col h4{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin-bottom:4px;font-size:12px;font-weight:700}.footer-col a{color:var(--text-secondary);font-size:14px}.footer-col a:hover{color:var(--accent)}.footer-bottom{max-width:var(--max-width);border-top:1px solid var(--border);text-align:center;color:var(--text-muted);margin:32px auto 0;padding-top:20px;font-size:13px}.page-content{min-height:calc(100vh - var(--nav-height));flex-direction:column;display:flex}.page-container{max-width:var(--max-width);flex:1;margin:0 auto;padding:48px 24px 80px}.page-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-bottom:40px;display:flex}.page-header h1{font-family:var(--font-brand);letter-spacing:-.02em;font-size:28px;font-weight:600}.page-header p{color:var(--text-secondary);width:100%;font-size:16px}.landing{overflow:hidden}.hero{max-width:var(--max-width);grid-template-columns:1fr 1fr;align-items:center;gap:64px;margin:0 auto;padding:80px 24px 100px;display:grid}.hero-inner{flex-direction:column;gap:24px;display:flex}.hero-headline{font-family:var(--font-brand);letter-spacing:-.03em;color:var(--text-primary);font-size:48px;font-weight:600;line-height:1.1}.hero-sub{color:var(--text-secondary);max-width:520px;font-size:18px;line-height:1.6}.hero-ctas{flex-wrap:wrap;gap:12px;margin-top:8px;display:flex}.hero-preview{justify-content:center;display:flex}.hero-preview-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);width:100%;max-width:420px;padding:24px;box-shadow:0 20px 60px #0000004d}.hero-preview-label{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin-bottom:16px;font-size:11px;font-weight:700}.section{padding:var(--section-pad) 24px}.section-inner{max-width:var(--max-width);margin:0 auto}.section-title{font-family:var(--font-brand);letter-spacing:-.02em;text-align:center;margin-bottom:12px;font-size:32px;font-weight:600}.section-sub{text-align:center;color:var(--text-secondary);margin-bottom:48px;font-size:16px}.section-cta{text-align:center;margin-top:32px}.how-it-works{background:var(--graphite)}.steps-grid{grid-template-columns:repeat(3,1fr);gap:32px;display:grid}.step-card{background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-lg);text-align:center;padding:32px 24px}.step-number{background:var(--accent);color:#fff;width:40px;height:40px;line-height:40px;font-family:var(--font-brand);border-radius:50%;margin:0 auto 16px;font-size:18px;font-weight:600}.step-card h3{margin-bottom:8px;font-size:16px;font-weight:600}.step-card p{color:var(--text-secondary);font-size:14px;line-height:1.5}.use-cases-grid{grid-template-columns:repeat(3,1fr);gap:20px;display:grid}.use-case-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:24px;transition:border-color .15s}.use-case-card:hover{border-color:var(--accent)}.use-case-icon{margin-bottom:12px;font-size:28px;display:block}.use-case-card h3{margin-bottom:6px;font-size:15px;font-weight:600}.use-case-card p{color:var(--text-secondary);font-size:13px;line-height:1.5}.templates-section{background:var(--graphite)}.templates-grid{grid-template-columns:repeat(3,1fr);gap:20px;display:grid}.template-card{background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-md);flex-direction:column;gap:8px;padding:24px;display:flex}.template-category{text-transform:uppercase;letter-spacing:.08em;color:var(--accent);font-size:11px;font-weight:700}.template-card h3{font-size:16px;font-weight:600}.template-card p{color:var(--text-secondary);flex:1;font-size:13px;line-height:1.5}.templates-full-grid{flex-direction:column;gap:16px;display:flex}.template-full-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden}.template-full-info{flex-direction:column;gap:8px;padding:24px;display:flex}.template-full-info h3{font-size:18px}.template-full-info p{color:var(--text-secondary);font-size:14px;line-height:1.5}.template-usecase{font-size:13px!important}.template-actions{gap:8px;margin-top:8px;display:flex}.template-preview{border-top:1px solid var(--border);background:var(--bg-primary);padding:24px}.pricing-grid{grid-template-columns:repeat(3,1fr);gap:20px;max-width:900px;margin:0 auto;display:grid}.pricing-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);text-align:center;flex-direction:column;align-items:center;padding:32px 24px;display:flex;position:relative}.pricing-card--popular{border-color:var(--accent);box-shadow:0 0 30px #009bff1a}.pricing-badge{background:var(--accent);color:#fff;text-transform:uppercase;letter-spacing:.06em;border-radius:20px;padding:4px 14px;font-size:11px;font-weight:700;position:absolute;top:-12px}.pricing-card h3{font-family:var(--font-brand);margin-top:8px;margin-bottom:8px;font-size:20px;font-weight:600}.pricing-amount{font-family:var(--font-brand);letter-spacing:-.03em;font-size:44px;font-weight:600}.pricing-amount span{color:var(--text-muted);font-size:16px;font-weight:400}.pricing-period{color:var(--text-muted);margin-bottom:20px;font-size:13px}.pricing-features{text-align:left;flex:1;width:100%;margin-bottom:24px;list-style:none}.pricing-features li{color:var(--text-secondary);border-bottom:1px solid var(--border);padding:6px 0;font-size:14px}.pricing-features li:before{content:"✓ ";color:var(--accent);font-weight:700}.faq-list{flex-direction:column;gap:4px;max-width:700px;margin:0 auto;display:flex}.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden}.faq-item--open{border-color:#c9ccd140}.faq-question{width:100%;color:var(--text-primary);font-family:var(--font-body);text-align:left;cursor:pointer;background:0 0;border:none;justify-content:space-between;align-items:center;padding:16px 20px;font-size:15px;font-weight:500;display:flex}.faq-chevron{color:var(--text-muted);flex-shrink:0;font-size:18px}.faq-answer{color:var(--text-secondary);padding:0 20px 16px;font-size:14px;line-height:1.6}.final-cta{border-top:1px solid var(--border);background:linear-gradient(135deg,#009bff14,#2b6faf14)}.auth-page{flex:1;justify-content:center;align-items:center;padding:48px 24px;display:flex}.auth-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);width:100%;max-width:420px;padding:40px 36px}.auth-card h1{font-family:var(--font-brand);letter-spacing:-.02em;text-align:center;margin-bottom:24px;font-size:22px;font-weight:600}.auth-notice{border-radius:var(--radius-sm);color:var(--text-secondary);background:#009bff14;border:1px solid #009bff33;margin-bottom:20px;padding:10px 14px;font-size:12px}.auth-notice code{background:#009bff1a;border-radius:3px;padding:1px 5px;font-size:11px}.form-group{margin-bottom:16px}.form-group label{color:var(--text-secondary);margin-bottom:6px;font-size:13px;font-weight:600;display:block}.form-group input{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;color:var(--text-primary);font-family:var(--font-body);outline:none;padding:10px 14px;font-size:14px;transition:border-color .15s}.form-group input:focus{border-color:var(--accent);box-shadow:0 0 0 2px #009bff26}.form-group input::placeholder{color:var(--text-muted)}.form-error{color:var(--error);margin-bottom:12px;font-size:13px}.auth-switch{text-align:center;color:var(--text-muted);margin-top:20px;font-size:14px}.auth-switch a{color:var(--accent)}.empty-state{text-align:center;max-width:480px;margin:0 auto;padding:80px 24px}.empty-state-icon{margin-bottom:16px;font-size:48px}.empty-state h2{font-family:var(--font-brand);margin-bottom:8px;font-size:22px;font-weight:600}.empty-state p{color:var(--text-secondary);margin-bottom:24px;font-size:15px}.empty-state-actions{flex-wrap:wrap;justify-content:center;gap:12px;display:flex}.calc-list{flex-direction:column;gap:8px;display:flex}.calc-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);justify-content:space-between;align-items:center;padding:16px 20px;transition:border-color .15s;display:flex}.calc-card:hover{border-color:#c9ccd140}.calc-card-info h3{font-size:15px;font-weight:600}.calc-card-meta{color:var(--text-muted);margin-top:2px;font-size:12px}.calc-card-actions{gap:6px;display:flex}.builder-layout{min-height:calc(100vh - var(--nav-height));flex-direction:column;display:flex}.builder-toolbar{background:var(--graphite);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:16px;padding:10px 20px;display:flex}.builder-name-input{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-family:var(--font-body);outline:none;width:300px;padding:7px 12px;font-size:14px;font-weight:600}.builder-name-input:focus{border-color:var(--accent)}.builder-name-input::placeholder{color:var(--text-muted);font-weight:400}.builder-toolbar-actions{gap:8px;display:flex}.builder-main{flex:1;grid-template-columns:1fr 1fr;min-height:0;display:grid}.panel{padding:24px;overflow-y:auto}.builder-panel{background:var(--bg-primary);border-right:1px solid var(--border)}.preview-panel{background:var(--graphite)}.panel h2{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);border-bottom:1px solid var(--border);margin-bottom:20px;padding-bottom:8px;font-size:12px;font-weight:700}.panel section{margin-bottom:28px}.panel h3{color:var(--text-secondary);margin-bottom:10px;font-size:13px;font-weight:600}.section-header{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.section-header h3{margin-bottom:0}.field-list{flex-direction:column;gap:10px;display:flex}.field-row{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);align-items:flex-end;gap:8px;padding:10px 10px 10px 12px;display:flex}.field-inputs{flex-wrap:wrap;flex:1;gap:8px;display:flex}.field-group{flex-direction:column;flex:2;gap:4px;min-width:100px;display:flex}.field-group--narrow{flex:1;min-width:80px}.field-group label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;font-size:10px;font-weight:700}input[type=text],input[type=number],select,textarea{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-input);color:var(--text-primary);width:100%;font-size:13px;font-family:var(--font-body);outline:none;padding:7px 10px;transition:border-color .15s}input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 2px #009bff1f}input::placeholder,textarea::placeholder{color:var(--text-muted)}select{cursor:pointer}.btn-add{background:var(--accent);color:#fff;border-radius:var(--radius-sm);cursor:pointer;border:none;padding:5px 12px;font-size:13px;font-weight:500}.btn-add:hover{background:var(--accent-hover)}.btn-remove{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:3px;flex-shrink:0;padding:2px 6px;font-size:16px;line-height:1}.btn-remove:hover{color:var(--error);background:#ef44441a}.formula-input{resize:vertical;font-family:Menlo,Monaco,Courier New,monospace;font-size:13px}.formula-input--error{border-color:var(--error)}.result-label-input{width:100%}.hint{color:var(--text-muted);margin-bottom:6px;font-size:12px}.hint code{color:var(--accent);background:#009bff1a;border-radius:3px;padding:1px 5px;font-size:11px}.error-msg{color:var(--error);margin-top:5px;font-size:12px}.empty-hint{color:var(--text-muted);margin:8px 0;font-size:13px;font-style:italic}.preview-calculator{background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-md);flex-direction:column;gap:14px;margin-bottom:24px;padding:20px;display:flex}.preview-field{flex-direction:column;gap:5px;display:flex}.preview-field label{color:var(--text-secondary);align-items:center;gap:6px;font-size:13px;font-weight:500;display:flex}.type-badge{color:var(--accent);background:#009bff1f;border-radius:3px;padding:1px 5px;font-size:10px;font-weight:600}.preview-input-wrap{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-input);align-items:center;transition:border-color .15s;display:flex;overflow:hidden}.preview-input-wrap:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px #009bff1f}.input-prefix,.input-suffix{background:var(--bg-card);color:var(--text-muted);border-right:1px solid var(--border);-webkit-user-select:none;user-select:none;padding:7px 10px;font-size:13px}.input-suffix{border-right:none;border-left:1px solid var(--border)}.preview-input-wrap input{box-shadow:none;background:0 0;border:none;border-radius:0;flex:1}.preview-input-wrap input:focus{box-shadow:none;border:none}.preview-result{border-top:2px solid var(--border);justify-content:space-between;align-items:center;margin-top:6px;padding:14px 0 4px;display:flex}.result-label{color:var(--text-secondary);font-size:14px;font-weight:600}.result-value{font-family:var(--font-brand);color:var(--accent);font-size:22px;font-weight:700}.result-value--error{color:var(--text-muted);font-size:16px}.json-section h3{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px;font-size:11px;font-weight:700}.json-output{background:var(--bg-primary);color:var(--accent);border:1px solid var(--border);border-radius:var(--radius-sm);resize:vertical;width:100%;padding:12px;font-family:Menlo,Monaco,Courier New,monospace;font-size:11px;line-height:1.5}.embed-calc{font-family:var(--font-body);flex-direction:column;gap:14px;max-width:480px;margin:0 auto;padding:16px 0;display:flex}.embed-field{flex-direction:column;gap:5px;display:flex}.embed-label{color:var(--text-secondary);align-items:center;gap:6px;font-size:13px;font-weight:500;display:flex}.embed-badge{color:var(--accent);background:#009bff1f;border-radius:3px;padding:1px 5px;font-size:10px;font-weight:600}.embed-input-wrap{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-input);align-items:center;transition:border-color .15s;display:flex;overflow:hidden}.embed-input-wrap:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px #009bff1f}.embed-prefix,.embed-suffix{background:var(--bg-card);color:var(--text-muted);border-right:1px solid var(--border);-webkit-user-select:none;user-select:none;padding:8px 10px;font-size:13px}.embed-suffix{border-right:none;border-left:1px solid var(--border)}.embed-input{color:var(--text-primary);width:100%;font-size:14px;font-family:var(--font-body);background:0 0;border:none;outline:none;flex:1;padding:8px 10px}.embed-result{border-top:2px solid var(--border);justify-content:space-between;align-items:center;margin-top:4px;padding:14px 0 4px;display:flex}.embed-result-label{color:var(--text-secondary);font-size:14px;font-weight:600}.embed-result-value{font-family:var(--font-brand);color:var(--accent);font-size:22px;font-weight:700}.embed-result-value--error{color:var(--text-muted);font-size:16px}.embed-error{font-family:var(--font-body);color:var(--error);padding:20px;font-size:14px}.modal-backdrop{z-index:100;background:#0009;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.modal{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);width:100%;max-width:600px;padding:28px;box-shadow:0 20px 60px #0006}.modal-header{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.modal-header h2{font-family:var(--font-brand);letter-spacing:-.01em;text-transform:none;color:var(--text-primary);border:none;padding:0;font-size:17px;font-weight:600}.modal-close{color:var(--text-muted);cursor:pointer;border-radius:var(--radius-sm);background:0 0;border:none;padding:2px 6px;font-size:18px;line-height:1}.modal-close:hover{color:var(--text-primary);background:var(--bg-input)}.modal-desc{color:var(--text-secondary);margin-bottom:16px;font-size:13px;line-height:1.5}.modal-snippet-wrap{margin-bottom:12px;position:relative}.modal-snippet{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-primary);width:100%;color:var(--accent);resize:none;outline:none;padding:12px 80px 12px 12px;font-family:Menlo,Monaco,Courier New,monospace;font-size:12px;line-height:1.5}.modal-copy{background:var(--accent);color:#fff;border-radius:var(--radius-sm);cursor:pointer;border:none;padding:5px 12px;font-size:12px;font-weight:600;transition:background .15s;position:absolute;top:10px;right:10px}.modal-copy:hover{background:var(--accent-hover)}.modal-copy--done{background:var(--success)}.modal-hint{color:var(--text-muted);font-size:12px}.modal-link{color:var(--accent)}.legal-page{max-width:720px;line-height:1.7}.legal-page h1{font-family:var(--font-brand);margin-bottom:8px;font-size:28px;font-weight:600}.legal-updated{color:var(--text-muted);margin-bottom:32px;font-size:13px}.legal-page h2{color:var(--text-primary);margin-top:28px;margin-bottom:10px;font-size:18px;font-weight:600}.legal-page p{color:var(--text-secondary);margin-bottom:12px;font-size:15px}.legal-page ul{margin-bottom:12px;padding-left:20px}.legal-page li{color:var(--text-secondary);margin-bottom:4px;font-size:15px}@media (width<=900px){.hero{grid-template-columns:1fr;gap:40px;padding:48px 24px 64px}.hero-headline{font-size:36px}.steps-grid,.use-cases-grid,.templates-grid,.pricing-grid{grid-template-columns:1fr;max-width:480px;margin-left:auto;margin-right:auto}.builder-main{grid-template-columns:1fr}.builder-panel{border-right:none;border-bottom:1px solid var(--border)}.footer-inner{flex-direction:column}.footer-columns{gap:32px}.navbar-links{gap:2px}.nav-link{padding:6px 8px;font-size:13px}}@media (width<=600px){.hero-headline{font-size:28px}.hero-sub{font-size:15px}.section-title{font-size:24px}.hero-ctas{flex-direction:column}.hero-ctas .btn-lg{width:100%}.builder-toolbar{flex-direction:column;align-items:stretch}.builder-name-input{width:100%}}