.hero{max-width:760px;margin:0 auto var(--space-8);text-align:center}.hero-badge{display:inline-flex;align-items:center;gap:8px;margin-bottom:var(--space-4);padding:6px 16px;border:1px solid rgba(255,92,0,.2);background:#ff5c001a;border-radius:999px;font-family:var(--font-mono);font-size:var(--fs-xs);letter-spacing:.06em;color:var(--color-primary)}.hero-badge .dot{width:6px;height:6px;background:var(--color-primary);border-radius:999px;animation:pulse 1.5s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.hero h1{font-size:clamp(1.7rem,1.2rem + 2.4vw,3rem);font-weight:800;letter-spacing:-.03em;line-height:1.1;margin-bottom:var(--space-3)}.hero h1 .accent-serif{color:var(--color-primary);font-family:var(--font-serif);font-style:italic;font-weight:400}.hero h1 .en-italic{font-family:var(--font-serif);font-style:italic;font-weight:400;color:var(--color-text-muted)}.hero p{color:var(--color-text-muted);font-size:var(--fs-md);line-height:1.7;max-width:640px;margin:0 auto}.hero p b{color:var(--color-text)}.hero p .hl{color:var(--color-primary);font-weight:600}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:24px;align-items:center}.hero-sub{font-size:var(--fs-xs);color:var(--color-text-muted);font-family:var(--font-mono);display:inline-flex;align-items:center;min-height:44px}.hero-note{font-size:11px;font-family:var(--font-mono);color:var(--color-text-muted);margin-top:12px;opacity:.8}.tool-card{max-width:1280px;margin:0 auto var(--space-8);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:var(--space-6)}@media (min-width: 768px){.tool-card{padding:var(--space-8)}}.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-8)}.tool-form{display:flex;flex-direction:column;gap:var(--space-6)}.form-section{border:1px solid var(--color-border);border-radius:var(--radius);padding:var(--space-4)}.form-section h3{font-size:var(--fs-sm);font-weight:700;color:var(--color-primary);margin-bottom:var(--space-4);display:flex;align-items:center;gap:var(--space-2)}.form-section h3 .step-num{width:24px;height:24px;border-radius:999px;background:#ff5c001a;color:var(--color-primary);display:inline-flex;align-items:center;justify-content:center;font-size:var(--fs-xs);font-weight:800;flex-shrink:0}.field-label{display:block;font-size:var(--fs-sm);font-weight:600;color:var(--color-text);margin-bottom:var(--space-2)}.field-row{display:grid;gap:var(--space-3)}.field-row.two{grid-template-columns:1fr 1fr}.text-input{width:100%;font-family:inherit;font-size:var(--fs-base);color:var(--color-text);background:var(--color-surface);border:1px solid var(--color-border);border-radius:calc(var(--radius) - 2px);padding:var(--space-3) var(--space-4);min-height:44px;transition:border-color .15s ease,box-shadow .15s ease}textarea.text-input{resize:vertical;min-height:76px}.text-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #ff5c0026}select.text-input{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23888890' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 1rem center;padding-right:2.5rem}select.text-input option{background:var(--color-surface);color:var(--color-text)}.radio-row{display:flex;gap:var(--space-2);flex-wrap:wrap}.radio-pill{flex:1 1 auto;min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:6px;border-radius:999px;border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text-muted);font-size:var(--fs-sm);font-weight:600;cursor:pointer;padding:0 var(--space-4);transition:all .15s ease;-webkit-user-select:none;-moz-user-select:none;user-select:none}.radio-pill.active{background:#ff5c001a;border-color:#ff5c004d;color:var(--color-primary)}.radio-pill input{display:none}.toggle-card{display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);padding:var(--space-3) var(--space-4);border-radius:calc(var(--radius) - 2px);background:var(--color-bg);border:1px solid var(--color-border)}.toggle-title{font-size:13px;font-weight:600}.toggle-desc{font-size:11px;color:var(--color-text-muted);line-height:1.5}.amount-chips{display:flex;flex-wrap:wrap;gap:var(--space-2);margin-top:var(--space-2)}.amount-chips button{min-height:36px;padding:0 14px;border-radius:999px;font-size:var(--fs-xs);font-weight:600;background:var(--color-bg);border:1px solid var(--color-border);color:var(--color-text-muted);cursor:pointer}.amount-chips button:hover{color:var(--color-text);border-color:var(--color-text-muted)}.helper{font-size:var(--fs-xs);color:var(--color-text-muted);margin-top:var(--space-2);line-height:1.5}.vat-note{font-size:11px;color:#f59e0b;background:#f59e0b1a;border:1px solid rgba(245,158,11,.2);border-radius:12px;padding:8px 12px;line-height:1.5;margin-top:8px}.vat-note.hidden,.helper.hidden{display:none}.btn{font-family:inherit;font-size:var(--fs-base);font-weight:700;border-radius:999px;min-height:48px;padding:0 var(--space-6);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);transition:transform .15s ease,background .15s ease;text-decoration:none;border:none}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-light)}.btn-secondary{background:var(--color-surface);color:var(--color-text-muted);border:1px solid var(--color-border)}.btn-secondary:hover{color:var(--color-text);border-color:var(--color-text-muted)}.btn:hover{transform:translateY(-1px)}.actions{display:flex;gap:var(--space-3);flex-wrap:wrap}.copy-note{font-size:var(--fs-xs);min-height:1em;text-align:center}.preview-panel{display:flex;flex-direction:column;gap:var(--space-4)}.preview-header{display:flex;align-items:center;justify-content:space-between}.preview-tag{font-size:var(--fs-2xs);font-family:var(--font-mono);color:var(--color-text-muted);letter-spacing:.06em}.cert-preview{--print-bg: #ffffff;--print-text:#18181b;--print-text-muted:#6b7280;--print-border:#e4e4e7;--print-accent:#FF5C00;border:1px solid var(--print-border);border-radius:calc(var(--radius) - 2px);overflow:hidden;background:var(--print-bg);color:var(--print-text)}.cert-doc{padding:var(--space-4) var(--space-6)}.cert-top{text-align:center;border:1.5px solid var(--print-text);padding:var(--space-3) var(--space-4);margin-bottom:var(--space-4)}.cert-top h2{font-size:var(--fs-md);font-weight:800;letter-spacing:.02em;line-height:1.3}.cert-subtitle{font-size:var(--fs-2xs);font-weight:700;letter-spacing:.06em;color:var(--print-accent);font-family:var(--font-mono)}.cert-top small{display:block;font-size:var(--fs-2xs);color:var(--print-text-muted);margin-top:4px;font-family:var(--font-mono)}.cert-docno{display:flex;justify-content:space-between;gap:var(--space-4);flex-wrap:wrap;font-size:var(--fs-xs);border-bottom:1px solid var(--print-border);padding-bottom:var(--space-3);margin-bottom:var(--space-4);font-family:var(--font-mono)}.cert-docno strong{color:var(--print-text);font-weight:700}.cert-section-title{font-size:var(--fs-xs);font-weight:800;letter-spacing:.06em;text-transform:uppercase;background:#f4f4f5;border:1px solid var(--print-border);border-left:3px solid var(--print-accent);padding:6px 10px;margin-bottom:var(--space-2);margin-top:var(--space-4)}.cert-meta{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-3) var(--space-6);font-size:var(--fs-sm);margin-bottom:var(--space-4)}.cert-meta .col{display:flex;flex-direction:column;gap:2px}.cert-meta .label{font-size:var(--fs-2xs);color:var(--print-text-muted);text-transform:uppercase;letter-spacing:.04em}.cert-meta .value{font-weight:600;word-break:break-word}.cert-meta .value.muted{font-weight:500}.cert-table{width:100%;border-collapse:collapse;font-size:var(--fs-sm);border:1px solid var(--print-text)}.cert-table th{background:var(--print-text);color:#fff;font-size:var(--fs-2xs);text-transform:uppercase;letter-spacing:.04em;padding:6px 8px;text-align:left;font-weight:700}.cert-table th.num,.cert-table td.num{text-align:right;font-variant-numeric:tabular-nums}.cert-table th.center,.cert-table td.center{text-align:center}.cert-table td{padding:8px;border-bottom:1px solid var(--print-border);vertical-align:top}.cert-table tr:last-child td{border-bottom:none}.cert-table td small{color:var(--print-text-muted);font-size:var(--fs-2xs);display:block}.cert-totals{display:grid;grid-template-columns:1fr 1fr 1fr;gap:0;border:1px solid var(--print-text);border-top:none;font-size:var(--fs-sm);font-weight:700}.cert-totals div{padding:8px 10px;text-align:right;font-variant-numeric:tabular-nums}.cert-totals div:first-child{text-align:left}.cert-totals div+div{border-left:1px solid var(--print-border)}.cert-totals div.highlight{background:#fff4ec;color:#c2410c}.net-highlight{margin-top:var(--space-4);border:2px solid var(--print-text);border-radius:10px;padding:var(--space-3) var(--space-4);display:flex;justify-content:space-between;align-items:center;gap:var(--space-4);background:#fff}.net-highlight .label{font-size:var(--fs-xs);font-weight:700;color:var(--print-text-muted);text-transform:uppercase;letter-spacing:.04em}.net-highlight .value{font-size:clamp(1.1rem,1rem + .8vw,1.45rem);font-weight:800;color:var(--print-accent);font-variant-numeric:tabular-nums}.net-highlight .baht{font-size:var(--fs-xs);color:var(--print-text-muted);margin-top:2px}.cert-conds{margin-top:var(--space-4);font-size:var(--fs-2xs);color:var(--print-text-muted);border-top:1px dashed var(--print-border);padding-top:var(--space-3);line-height:1.6}.cert-conds strong{color:var(--print-text)}.cert-signs{margin-top:var(--space-6);display:grid;grid-template-columns:1fr 1fr;gap:var(--space-8)}.cert-signs .sign{font-size:var(--fs-xs);color:var(--print-text-muted);text-align:center}.cert-signs .line{margin-top:42px;border-top:1px solid var(--print-text);padding-top:6px;font-weight:600;color:var(--print-text)}.cert-signs .sub{font-size:var(--fs-2xs);color:var(--print-text-muted);margin-top:2px}.preview-hint{font-size:var(--fs-xs);color:var(--color-text-muted);text-align:center}.features{max-width:980px;margin:0 auto var(--space-8);display:grid;gap:var(--space-6);grid-template-columns:repeat(3,1fr)}.feature{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:var(--space-6)}.feature .icon{width:44px;height:44px;border-radius:10px;background:#ff5c001a;color:var(--color-primary);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:var(--space-3)}.feature h3{font-size:var(--fs-md);font-weight:700;margin-bottom:var(--space-2)}.feature p{font-size:var(--fs-sm);color:var(--color-text-muted)}.faq{max-width:720px;margin:0 auto var(--space-8)}.faq h2{font-size:var(--fs-xl);font-weight:800;text-align:center;margin-bottom:var(--space-6)}.faq details{background:var(--color-surface);border:1px solid var(--color-border);border-radius:calc(var(--radius) - 2px);margin-bottom:var(--space-2);overflow:hidden}.faq summary{cursor:pointer;list-style:none;padding:var(--space-4) var(--space-6);font-weight:600;font-size:var(--fs-base);display:flex;justify-content:space-between;align-items:center;gap:var(--space-4);min-height:44px}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";font-size:var(--fs-lg);color:var(--color-text-muted);flex-shrink:0}.faq details[open] summary:after{content:"−"}.faq .answer{padding:0 var(--space-6) var(--space-6);font-size:var(--fs-sm);color:var(--color-text-muted);line-height:1.7}.switch{position:relative;display:inline-block;width:44px;height:26px;flex-shrink:0}.switch input{opacity:0;width:0;height:0}.slider{position:absolute;cursor:pointer;inset:0;background:#3f3f46;border-radius:999px;transition:.2s}.slider:before{content:"";position:absolute;height:20px;width:20px;left:3px;bottom:3px;background:#fff;border-radius:50%;transition:.2s}input:checked+.slider{background:var(--color-primary)}input:checked+.slider:before{transform:translate(18px)}@media (max-width: 960px){.tool-grid{grid-template-columns:1fr!important}}@media (max-width: 768px){.field-row.two,.cert-meta{grid-template-columns:1fr}.cert-signs{grid-template-columns:1fr;gap:var(--space-6)}.cert-totals{grid-template-columns:1fr}.cert-totals div+div{border-left:none;border-top:1px solid var(--print-border)}.net-highlight{flex-direction:column;align-items:flex-start}.features{grid-template-columns:1fr}.tool-card{padding-left:var(--space-4);padding-right:var(--space-4)}}@media print{body{background:#fff;background-image:none}#themeToggle,footer,.bg-cta,.hero,.tool-form,.preview-header,.preview-hint,.features,.faq{display:none!important}main{padding:0;max-width:100%}.tool-card{border:none;padding:0}.tool-grid,.preview-panel{display:block}.cert-preview{border:none}.cert-doc{padding:0}}