:root{--primary:#2563eb;--primary-dark:#1d4ed8;--primary-soft:#eff6ff;--primary-line:#bfdbfe;--text:#0f172a;--muted:#475569;--bg:#f1f5f9;--surface:#fff;--line:#e2e8f0;--soft:#f1f5f9;--danger:#b91c1c;--danger-soft:#fef2f2;--radius:16px;--radius-sm:10px;--shadow:0 1px 2px #0f172a0d, 0 1px 3px #0f172a0a;--shadow-lg:0 10px 30px -12px #0f172a40;--max:480px;--font:system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans Thai", "Sarabun", sans-serif}@media (width>=768px){:root{--max:600px}}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;font-size:16px;line-height:1.5}body{background:var(--bg);min-height:100dvh}a{color:inherit;text-decoration:none}ul{list-style:none}button,input{font:inherit;color:inherit}button{cursor:pointer;touch-action:manipulation;background:0 0;border:none}:focus-visible{outline:3px solid var(--primary);outline-offset:2px}.page{width:100%;max-width:var(--max);margin:0 auto;padding:16px}.stack{flex-direction:column;gap:12px;display:flex}.row{justify-content:space-between;align-items:center;gap:12px;display:flex}.grow{flex:1;min-width:0}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}@media (width>=768px){.page{padding:24px}.card{padding:20px}}.h1{letter-spacing:-.01em;font-size:1.5rem;font-weight:800;line-height:1.25}.h2{font-size:1.05rem;font-weight:700}.muted{color:var(--muted)}.small{font-size:.875rem}.bold{font-weight:700}.price{color:var(--primary);font-variant-numeric:tabular-nums;white-space:nowrap;font-weight:800}.ellipsis{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.danger{color:var(--danger)}.sr-only{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.btn{border-radius:var(--radius-sm);background:var(--surface);border:1px solid #0000;border-color:var(--line);text-align:center;cursor:pointer;justify-content:center;align-items:center;gap:8px;min-height:48px;padding:0 16px;font-weight:700;transition:transform 60ms,background-color .12s;display:inline-flex}.btn:active:not(:disabled){background:var(--soft);transform:scale(.98)}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 2px 8px -2px #2563eb80}.btn-primary:active:not(:disabled){background:var(--primary-dark)}@media (hover:hover){.btn:hover:not(:disabled){background:var(--soft)}.btn-primary:hover:not(:disabled){background:var(--primary-dark)}}.btn:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}.btn.danger{color:var(--danger);background:var(--danger-soft);border-color:#0000}.btn-lg{min-height:56px;font-size:1.1rem}.btn-block{width:100%}.actions{grid-template-columns:1fr 1fr;gap:8px;display:grid}.link{min-height:48px;color:var(--primary-dark);align-items:center;padding:0 4px;font-weight:700;display:inline-flex}@media (hover:hover){.link:hover{text-decoration:underline}}.field{flex-direction:column;gap:6px;font-size:.9rem;font-weight:600;display:flex}.input{border:1.5px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);height:48px;padding:0 14px;font-size:1rem;font-weight:400}.input:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px #2563eb26}.file-btn:focus-within{outline:3px solid var(--primary);outline-offset:2px}.status:empty{display:none}.header{z-index:20;background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0}.header>.page{align-items:center;gap:8px;height:56px;padding-block:0;display:flex}.brand{color:var(--primary);letter-spacing:-.02em;font-size:1.35rem;font-weight:800}.tag{color:var(--primary-dark);background:var(--primary-soft);border-radius:999px;padding:2px 8px;font-size:.75rem}.icon-btn{background:0 0;border-color:#0000;min-width:48px;padding:0}.back{margin-left:-12px}.push{margin-left:auto}.quote-link{align-items:center;gap:12px;padding:14px 16px;transition:border-color .12s;display:flex}.quote-link:active{border-color:var(--primary);background:var(--primary-soft)}@media (hover:hover){.quote-link:hover{border-color:var(--primary-line)}}.end{text-align:right;flex-shrink:0}.form{padding-bottom:200px}.services{gap:10px;display:grid}.service{border:1.5px solid var(--line);border-radius:var(--radius-sm);align-items:center;gap:12px;padding:12px;transition:border-color .12s,background-color .12s;display:flex}.service.on{border-color:var(--primary);background:var(--primary-soft)}.stepper{flex-shrink:0;align-items:center;gap:4px;display:flex}.step{width:48px;padding:0;font-size:1.4rem}.qty{text-align:center;font-variant-numeric:tabular-nums;min-width:32px;font-size:1.15rem;font-weight:800}.bar{z-index:30;background:var(--surface);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);position:fixed;inset:auto 0 0;box-shadow:0 -8px 24px -12px #0f172a33}.bar .page{flex-direction:column;gap:8px;padding-block:12px;display:flex}.total{font-size:1.6rem}.receipt{border-top:4px solid var(--primary);box-shadow:var(--shadow-lg)}.receipt .top{align-items:flex-start}.receipt hr{border:none;border-top:1px dashed var(--line)}.receipt hr.thick{border-top:2px solid var(--text)}.notice{border-color:var(--primary);background:var(--primary-soft)}.svc{border-bottom:1px solid var(--line);grid-template-columns:1fr 1fr auto;align-items:end;gap:8px;padding-bottom:12px;display:grid}.svc:last-child{border-bottom:none;padding-bottom:0}.svc-name{grid-column:1/-1}.svc .input{width:100%;min-width:0}.input[aria-invalid=true]{border-color:var(--danger)}.landing{gap:32px;max-width:1040px;padding-block:32px 48px;display:grid}.hero{letter-spacing:-.02em;font-size:clamp(2rem,7vw,3rem);font-weight:800;line-height:1.15}.hero em{color:var(--primary);font-style:normal}.steps{counter-reset:step}.steps li{align-items:center;gap:12px;font-weight:600;display:flex}.steps li:before{counter-increment:step;content:counter(step);background:var(--primary-soft);width:32px;height:32px;color:var(--primary-dark);border-radius:999px;flex-shrink:0;place-items:center;font-weight:800;display:grid}.demo figcaption{text-align:center;margin-bottom:8px}@media (width>=900px){.landing{grid-template-columns:1.1fr 1fr;align-items:center;gap:64px;min-height:100dvh}.demo{transform:rotate(1.5deg)}}@page{margin:16mm}@media print{.header,.no-print{display:none!important}html,body{background:#fff}.page{max-width:none;padding:0}.receipt{box-shadow:none;border:none;padding:0}}