:root{--foreground:#e8e8ed;--foreground-light:#a1a1aa;--foreground-lighter:#71717a;--foreground-muted:#52525b;--background-surface-100:#111827;--background-surface-200:#1f2937;--background-surface-300:#374151;--background-alternative:#0f172a;--background-control:#1e293b;--border:#ffffff14;--border-secondary:#ffffff0d;--border-strong:#ffffff1f;--border-stronger:#ffffff2e;--border-control:#ffffff1a;--brand:#14b8a6;--brand-400:#2dd4bf;--brand-500:#14b8a6;--brand-600:#0d9488;--brand-button:#14b8a6;--background-button:linear-gradient(135deg, #14b8a6, #0d9488);--success:#22c55e;--warning:#f59e0b;--destructive:#ef4444;--font-sans:var(--bb-font-sans);--font-mono:var(--bb-font-mono);--text-xs:.8125rem;--text-sm:.875rem;--text-base:1rem;--text-lg:1.125rem;--text-xl:1.25rem;--text-2xl:1.75rem;--text-3xl:2.25rem;--leading-tight:1.25;--leading-normal:1.5;--leading-relaxed:1.7;--tracking-tight:-.02em;--tracking-normal:0;--tracking-wide:.02em;--radius-sm:4px;--radius-md:6px;--radius-lg:8px;--radius-xl:12px;--radius-2xl:16px;--radius-full:9999px;--shadow-sm:0 1px 2px #0003;--shadow-md:0 4px 12px #00000040;--shadow-lg:0 8px 24px #0000004d;--transition-fast:.15s cubic-bezier(.4,0,.2,1);--transition-normal:.2s cubic-bezier(.4,0,.2,1);--ring-brand:0 0 0 2px var(--background-surface-100), 0 0 0 4px var(--brand-400)}[data-theme=light]{--foreground:#171717;--foreground-light:#3e444a;--foreground-lighter:#6b7280;--foreground-muted:#9ca3af;--background-surface-100:#fff;--background-surface-200:#f8f9fa;--background-surface-300:#f3f4f6;--background-alternative:#f3f4f6;--background-control:#f8f9fa;--border:#e5e7eb;--border-secondary:#f3f4f6;--border-strong:#d1d5db;--border-stronger:#9ca3af;--border-control:#d1d5db;--brand:#0d9488;--brand-400:#14b8a6;--brand-500:#0d9488;--brand-600:#0f766e;--brand-button:#0d9488;--background-button:linear-gradient(135deg, #0d9488, #0f766e);--success:#059669;--warning:#b45309;--destructive:#dc2626;--shadow-sm:0 1px 3px #0000000f;--shadow-md:0 4px 12px #00000014;--shadow-lg:0 8px 24px #0000001a;--ring-brand:0 0 0 2px #fff, 0 0 0 4px var(--brand-400)}.view{width:100%;max-width:100%;animation:.35s ease-out fadeSlideUp;overflow-x:hidden}@keyframes 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var(--border-strong);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);max-width:680px;margin:0 auto;overflow:hidden}.card-header{padding:28px 32px 4px}.card-header-label{font-size:var(--text-base);color:var(--foreground);margin:0;font-weight:700}.card-body{padding:16px 32px 28px}.card-footer{padding:0 32px 24px}.field{margin-bottom:16px}.field-label{font-size:var(--text-xs);color:var(--foreground-light);text-transform:uppercase;letter-spacing:.06em;margin-bottom:6px;font-weight:500;display:block}.textarea,.input{background:var(--background-control);border:1px solid var(--border-control);border-radius:var(--radius-lg);width:100%;color:var(--foreground);font-family:var(--font-sans);font-size:var(--text-base);line-height:var(--leading-relaxed);transition:border-color var(--transition-fast), box-shadow var(--transition-fast);padding:14px 16px}.textarea{resize:none;min-height:180px;overflow:hidden}.input{min-height:auto;font-size:var(--text-sm);padding:10px 14px}.field-row{gap:12px;display:flex}.field-row .field{flex:1}.field-optional{color:var(--foreground-muted);text-transform:none;letter-spacing:normal;font-weight:400}.select{appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%2371717a'%3E%3Cpath fill-rule='evenodd' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z' clip-rule='evenodd'/%3E%3C/svg%3E");background-position:right 10px 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16px;font-weight:500;text-decoration:none;display:inline-flex}.btn-icon{width:16px;height:16px}.btn-primary{background:var(--background-button);color:#fff;width:100%;height:42px;font-weight:600;font-size:var(--text-base);box-shadow:var(--shadow-sm)}.btn-primary:hover{filter:brightness(1.1);box-shadow:var(--shadow-md);transform:translateY(-1px)}.btn-primary:active{box-shadow:var(--shadow-sm);transform:translateY(0)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-secondary:hover{background:var(--background-surface-300);border-color:var(--border-stronger)}.btn-ghost{width:100%;height:38px;color:var(--foreground-light);font-size:var(--text-sm);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;justify-content:center;align-items:center;gap:6px;margin-top:8px;font-weight:500;display:inline-flex}.btn-ghost:hover{color:var(--foreground);background:var(--background-surface-200)}.btn-ghost svg{flex-shrink:0}.result-section{animation:.35s ease-out fadeSlideUp}.success-badge{color:var(--success);border-radius:var(--radius-full);font-size:var(--text-sm);background:#21c45d14;border:1px solid #21c45d26;align-items:center;gap:8px;margin-bottom:16px;padding:8px 14px;font-weight:600;display:inline-flex}.success-badge svg{flex-shrink:0;width:18px;height:18px}.result-hint{color:var(--foreground-light);font-size:var(--text-sm);margin-bottom:16px}.link-box{gap:8px;margin-bottom:8px;display:flex}.link-input{font-size:var(--text-xs);font-family:var(--font-mono);color:var(--brand-500);background:var(--background-alternative);cursor:text;flex:1;min-height:auto;overflow:visible}.btn-secondary{background:var(--background-surface-200);color:var(--foreground);border:1px solid var(--border-strong);flex-shrink:0;align-items:center;gap:6px;display:inline-flex}.btn-secondary svg{flex-shrink:0}.receipt-meta{grid-template-columns:1fr 1fr;gap:10px;margin:16px 0;display:grid}.receipt-item{background:var(--background-surface-200);border:1px solid var(--border);border-radius:var(--radius-md);flex-direction:column;gap:4px;padding:12px 14px;display:flex}.receipt-label{font-size:var(--text-xs);color:var(--foreground-lighter);text-transform:uppercase;letter-spacing:.03em;align-items:center;gap:5px;font-weight:500;display:inline-flex}.receipt-label svg{opacity:.65;flex-shrink:0}.receipt-value{font-size:var(--text-sm);color:var(--foreground);font-weight:600}.security-badges{flex-wrap:wrap;justify-content:center;gap:6px;display:flex}.badge{background:var(--background-surface-200);border:1px solid var(--border);border-radius:var(--radius-full);font-size:var(--text-xs);color:var(--foreground-lighter);letter-spacing:var(--tracking-wide);align-items:center;gap:5px;padding:4px 10px;font-weight:500;display:inline-flex}.badge 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var(--border);border-radius:var(--radius-lg);text-align:left;margin-top:20px;padding:16px}.reveal-explainer-title{font-size:var(--text-sm);color:var(--foreground);align-items:center;gap:6px;margin-bottom:10px;font-weight:600;display:flex}.reveal-explainer-title svg{width:16px;height:16px;color:var(--success);flex-shrink:0}.reveal-explainer-list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.reveal-explainer-list li{font-size:var(--text-xs);color:var(--foreground-lighter);line-height:var(--leading-normal);padding-left:16px;position:relative}.reveal-explainer-list li:before{content:"→";color:var(--foreground-muted);position:absolute;left:0}.section-label{font-size:var(--text-xs);color:var(--brand);text-transform:uppercase;letter-spacing:.08em;margin-bottom:8px;font-weight:700}.section-title{font-size:var(--text-2xl);letter-spacing:var(--tracking-tight);color:var(--foreground);margin:0 0 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var(--transition-fast);padding:28px}.sec-arch-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow-md)}.sec-arch-icon{border-radius:var(--radius-lg);justify-content:center;align-items:center;width:44px;height:44px;margin-bottom:16px;font-size:1.25rem;display:flex}.sec-arch-icon.teal{color:var(--brand);background:#1abc9c1a}.sec-arch-icon.amber{color:var(--warning);background:#f59f0a1a}.sec-arch-icon.green{color:var(--success);background:#21c45d1a}.sec-arch-icon.blue{color:#3b82f6;background:#3c83f61a}.sec-arch-card h3{font-size:var(--text-base);color:var(--foreground);margin:0 0 6px;font-weight:700}.sec-arch-card p{font-size:var(--text-xs);color:var(--foreground-lighter);line-height:var(--leading-relaxed);margin:0}.hiw-section{text-align:center;max-width:900px;margin:0 auto;padding:64px 24px;animation:.4s ease-out .15s both fadeSlideUp}.hiw-section .section-title,.hiw-section .section-subtitle{text-align:center;margin-left:auto;margin-right:auto}.hiw-3col{text-align:left;grid-template-columns:1fr 1fr 1fr;gap:0;display:grid}.hiw-step{padding:24px 28px}.hiw-step:not(:first-child){border-left:1px solid var(--border)}.hiw-step-number{color:var(--foreground-muted);letter-spacing:-.04em;margin-bottom:12px;font-size:3.5rem;font-weight:800;line-height:1}.hiw-step h3{font-size:var(--text-base);color:var(--foreground);margin:0 0 8px;font-weight:700}.hiw-step p{font-size:var(--text-xs);color:var(--foreground-lighter);line-height:var(--leading-relaxed);margin:0}.use-section{max-width:900px;margin:0 auto;padding:64px 24px;animation:.4s ease-out .2s both fadeSlideUp}.use-cases-grid{grid-template-columns:1fr 1fr;gap:16px;display:grid}.use-case-card{background:var(--background-surface-100);border:1px solid var(--border);border-radius:var(--radius-xl);transition:border-color 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16px;font-size:1.75rem;font-style:italic;font-weight:700}.bottom-cta-sub{font-size:var(--text-sm);color:var(--foreground-light);margin:0 0 28px}.bottom-cta-buttons{flex-wrap:wrap;justify-content:center;gap:12px;display:flex}.btn-cta-primary{border-radius:var(--radius-md);background:var(--background-button);color:#fff;height:44px;font-weight:600;font-size:var(--text-sm);cursor:pointer;box-shadow:var(--shadow-sm);transition:all var(--transition-fast);border:none;justify-content:center;align-items:center;padding:0 28px;text-decoration:none;display:inline-flex}.btn-cta-primary:hover{filter:brightness(1.1);box-shadow:var(--shadow-md);transform:translateY(-1px)}.btn-cta-secondary{border-radius:var(--radius-md);height:44px;color:var(--foreground);font-weight:500;font-size:var(--text-sm);border:1px solid var(--border-strong);cursor:pointer;transition:all var(--transition-fast);background:0 0;justify-content:center;align-items:center;padding:0 28px;text-decoration:none;display:inline-flex}.btn-cta-secondary:hover{background:var(--background-surface-300);border-color:var(--border-stronger)}.faq-section{max-width:900px;margin:0 auto;padding:48px 24px}.faq-section .section-title{text-align:center;letter-spacing:-.03em;color:#ededed;font-size:2.5rem;font-weight:800;line-height:1.15}[data-theme=light] .faq-section .section-title{color:#111827}.faq-list{flex-direction:column;gap:0;display:flex}.faq-item{border-top:1px solid var(--border)}.faq-item:last-child{border-bottom:1px solid var(--border)}.faq-item summary{font-size:var(--text-sm);color:var(--foreground);cursor:pointer;transition:color var(--transition-fast);justify-content:space-between;align-items:center;gap:16px;padding:16px 0;font-weight:500;list-style:none;display:flex}.faq-item summary:after{content:"";width:16px;height:16px;color:var(--foreground-muted);background:currentColor;flex-shrink:0;transition:transform .2s;-webkit-mask:url("data:image/svg+xml,%3Csvg 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auto;padding:32px 24px 48px}.seo-footer-grid{grid-template-columns:1fr 1fr;gap:32px;display:grid}.seo-footer-heading{font-size:var(--text-xs);color:var(--foreground-muted);text-transform:uppercase;letter-spacing:.05em;margin:0 0 12px;font-weight:600}.seo-footer-list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.seo-footer-list a{font-size:var(--text-sm);color:var(--foreground-lighter);transition:color var(--transition-fast);text-decoration:none}.seo-footer-list a:hover{color:var(--brand)}@media (max-width:768px){.hero-banner{padding:56px 20px 32px}.hero-title{font-size:2rem}.hero-accent{font-size:1.5rem}.card-header{padding:24px 20px 4px}.card-body{padding:12px 20px 20px}.card-footer{padding:0 20px 20px}.field-row{flex-direction:column;gap:0}.sec-arch-grid,.hiw-3col{grid-template-columns:1fr}.hiw-step:not(:first-child){border-left:none;border-top:1px solid var(--border)}.use-cases-grid,.trust-content{grid-template-columns:1fr}.bottom-cta{padding:56px 20px}.seo-footer-grid{grid-template-columns:1fr;gap:24px}.view.active{padding:0 16px}}