:root {
  --green: #06c755; --green-dark: #05a847; --green-soft: #e9f9ef; --ink: #1d2433; --muted: #6b7385;
  --line: #e4e7ee; --bg: #f5f6f8; --card: #fff; --warn: #b26a00; --danger: #d93025; --radius: 14px;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans Thai", Tahoma, sans-serif; }
a { color: var(--green-dark); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header.top { background: #fff; border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 56px; gap: 12px; }
.brand { font-weight: 800; font-size: 18px; color: var(--ink); text-decoration: none; letter-spacing: -.01em; }
.brand span { color: var(--green); }
.top nav { display: flex; gap: 14px; font-size: 14px; overflow-x: auto; white-space: nowrap; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a[aria-current="page"] { color: var(--ink); font-weight: 600; }
main { padding: 20px 0 110px; }
h1 { font-size: 24px; line-height: 1.25; margin: 4px 0 6px; letter-spacing: -.01em; }
h2 { font-size: 18px; margin: 28px 0 10px; }
.lead { color: var(--muted); margin: 0 0 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.label { font-size: 13px; font-weight: 600; color: var(--muted); margin: 18px 0 8px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 48px;
  border-radius: 12px; border: 1.5px solid var(--line); background: var(--card); color: var(--ink);
  font: inherit; font-weight: 600; padding: 10px 16px; cursor: pointer; text-decoration: none; }
.btn.primary { background: var(--green); border-color: var(--green); color: #fff; }
.btn.primary:active { background: var(--green-dark); }
.btn.block { display: flex; width: 100%; }
.btn.small { min-height: 38px; padding: 6px 12px; font-size: 14px; }
.btn:disabled { opacity: .45; cursor: default; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { border: 1.5px solid var(--line); background: #fff; border-radius: 999px; padding: 8px 14px; font: inherit; font-size: 15px; cursor: pointer; }
.chip[aria-pressed="true"] { border-color: var(--green); background: var(--green-soft); font-weight: 600; }
input[type="text"], input[type="number"], select { font: inherit; width: 100%; min-height: 48px; padding: 10px 12px;
  border: 1.5px solid var(--line); border-radius: 12px; background: #fff; color: var(--ink); }
input:focus, select:focus, .btn:focus-visible, .chip:focus-visible { outline: 3px solid rgba(6,199,85,.35); outline-offset: 1px; }
.drop { border: 2px dashed var(--line); border-radius: var(--radius); padding: 26px 16px; text-align: center; color: var(--muted); background: #fff; }
.drop.over { border-color: var(--green); background: var(--green-soft); }
.list { display: grid; gap: 10px; margin-top: 12px; }
.item { display: grid; grid-template-columns: 64px minmax(0, 1fr) auto; gap: 12px; align-items: center; background: #fff;
  border: 1px solid var(--line); border-radius: 12px; padding: 10px; }
.item img, .item .thumb { width: 64px; height: 64px; object-fit: cover; border-radius: 8px; background: #eceef2;
  display: flex; align-items: center; justify-content: center; font-size: 26px; }
.item .name { font-weight: 600; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.item .meta { font-size: 13px; color: var(--muted); }
.item .row { display: flex; gap: 6px; }
.ok { color: var(--green-dark); } .warn { color: var(--warn); } .err { color: var(--danger); }
footer.bar { position: fixed; left: 0; right: 0; bottom: 0; background: rgba(245,246,248,.96); border-top: 1px solid var(--line);
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom)); }
footer.bar .btn { max-width: 728px; margin: 0 auto; }
footer.site { color: var(--muted); font-size: 13px; padding: 24px 0 120px; border-top: 1px solid var(--line); margin-top: 32px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.tool { display: block; text-decoration: none; color: var(--ink); background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px; }
.tool:hover { border-color: var(--green); }
.tool b { display: block; font-size: 17px; margin: 6px 0 2px; }
.tool .ico { font-size: 30px; }
.tool small { color: var(--muted); font-size: 14px; }
.note { font-size: 13px; color: var(--muted); }
.out { font-size: 20px; font-weight: 600; line-height: 1.5; word-break: break-word; }
.spinner { width: 18px; height: 18px; border: 2.5px solid currentColor; border-right-color: transparent;
  border-radius: 50%; animation: spin .8s linear infinite; display: inline-block; vertical-align: -3px; }
@keyframes spin { to { transform: rotate(360deg); } }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; margin-bottom: 8px; }
.faq summary { font-weight: 600; cursor: pointer; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }