:root{--bg:#f5f7f9;--card:#fff;--text:#17202a;--muted:#6b7280;--line:#e5e7eb;--accent:#111827;--soft:#f1f3f5;--ok:#1f7a4d;--warn:#8a5b00;--danger:#a33a3a;--shadow:0 18px 48px rgba(17,24,39,.06);}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:"Noto Sans Thai",system-ui,sans-serif;line-height:1.55}.page-shell{width:min(1040px,calc(100% - 28px));margin:0 auto;padding:18px 0 44px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:4px 2px 20px}.brand{display:flex;align-items:center;gap:8px;font-weight:700;letter-spacing:.04em}.brand-mark{width:28px;height:28px;border-radius:9px;background:#111827;color:#fff;display:grid;place-items:center;font-size:15px}.privacy-badge{font-size:12px;color:#555f6d;background:#fff;border:1px solid var(--line);padding:7px 10px;border-radius:999px}.hero{text-align:center;padding:28px 8px 34px}.eyebrow{text-transform:none;color:#737b86;font-size:14px;margin:0 0 10px}.hero h1{font-size:clamp(30px,6vw,58px);line-height:1.15;letter-spacing:-.03em;margin:0}.hero h1 span{color:#4b5563}.hero-copy{color:var(--muted);font-size:17px;margin:18px auto 0;max-width:650px}.card{background:var(--card);border:1px solid rgba(17,24,39,.06);border-radius:24px;padding:24px;box-shadow:var(--shadow);margin:18px 0}.section-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:18px}.section-head h2{margin:0;font-size:21px}.section-head p{margin:3px 0 0;color:var(--muted);font-size:14px}.dropzone{min-height:235px;border:2px dashed #ccd2da;border-radius:20px;background:#fafbfc;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:7px;padding:30px 20px;cursor:pointer;transition:.18s ease}.dropzone:hover,.dropzone:focus{border-color:#8d97a4;background:#f7f8fa;outline:none}.dropzone.dragover{border-color:#111827;background:#f0f2f4}.drop-icon{font-size:44px;line-height:1;color:#7b8490}.dropzone strong{font-size:18px}.dropzone span{font-size:13px;color:var(--muted)}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.stat{padding:16px;border:1px solid var(--line);border-radius:16px;background:#fbfcfd}.stat small{display:block;color:var(--muted);font-size:12px;margin-bottom:4px}.stat strong{display:block;font-size:17px;word-break:break-word}.goal-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.goal-item{display:flex;flex-direction:column;gap:7px;font-size:13px;font-weight:600}.goal-item select,.goal-item input{width:100%;border:1px solid #d9dee4;border-radius:12px;background:#fff;padding:11px 12px;font:inherit;color:inherit}.goal-item select:focus,.goal-item input:focus{outline:2px solid rgba(17,24,39,.08);border-color:#9299a3}.input-suffix{display:flex}.input-suffix input{border-radius:12px 0 0 12px}.input-suffix em{display:grid;place-items:center;padding:0 11px;border:1px solid #d9dee4;border-left:0;border-radius:0 12px 12px 0;background:#f8fafb;color:var(--muted);font-style:normal}.hint{font-size:12px;color:var(--muted);margin:12px 0 18px}.primary-btn,.secondary-btn{border:0;border-radius:14px;padding:13px 18px;font:inherit;font-weight:700;cursor:pointer;text-decoration:none;text-align:center;display:inline-flex;align-items:center;justify-content:center;min-height:48px}.primary-btn{background:#111827;color:#fff}.primary-btn:hover{background:#242c39}.secondary-btn{background:#fff;color:#202732;border:1px solid #d7dce2}.result-card{scroll-margin-top:20px}.success-chip{white-space:nowrap;font-size:12px;font-weight:700;color:var(--ok);background:#eaf7ef;border:1px solid #ccebd7;border-radius:999px;padding:7px 10px}.comparison{display:grid;grid-template-columns:1fr 1fr;gap:16px}.preview-panel{min-width:0}.panel-label{font-size:13px;font-weight:700;margin-bottom:8px}.preview-box{height:320px;border:1px solid var(--line);background:repeating-conic-gradient(#f3f4f6 0 25%,#fff 0 50%) 50% / 18px 18px;border-radius:18px;display:grid;place-items:center;overflow:hidden}.preview-box img{max-width:100%;max-height:100%;object-fit:contain}.preview-meta{font-size:13px;color:var(--muted);margin-top:8px;text-align:center}.result-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}.download-btn{min-width:215px}.message{margin-top:12px;padding:11px 13px;border-radius:12px;font-size:13px;background:#f2f4f7;color:#3f4854}.message.error{background:#fdf0f0;color:var(--danger)}.message.warning{background:#fff7e2;color:var(--warn)}footer{text-align:center;color:#7b8490;font-size:12px;padding:12px 14px 0}footer p{margin:6px 0}.footer-note{opacity:.8}.hidden{display:none!important}@media (max-width:820px){.stats,.goal-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:640px){.page-shell{width:min(100% - 18px,1040px)}.topbar{padding-bottom:14px}.privacy-badge{font-size:11px}.hero{padding:20px 4px 24px}.hero-copy{font-size:15px}.card{padding:18px;border-radius:20px}.comparison{grid-template-columns:1fr}.preview-box{height:260px}.stats,.goal-grid{grid-template-columns:1fr}.result-actions{flex-direction:column-reverse}.primary-btn,.secondary-btn,.download-btn{width:100%}.section-head{align-items:flex-start}.success-chip{font-size:11px}}