:root {
  --paper: #f4efe4;
  --ink: #1d1914;
  --muted: #5d564c;
  --line: #d7cbb6;
  --card: #fffdf8;
  --red: #b4232c;
  --red-deep: #8d161d;
  --stamp: #c42b34;
  --ok: #215c3a;
  --warn: #8a4b12;
  --shadow: 0 10px 30px rgba(54, 36, 16, 0.08);
  --mono: "ui-monospace", "SFMono-Regular", "Menlo", "Consolas", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(196, 43, 52, 0.05), transparent 28%),
    linear-gradient(180deg, #f8f3e8 0%, var(--paper) 100%);
  font-family: "PingFang HK", "PingFang TC", "Noto Sans TC", "Microsoft JhengHei",
    ui-sans-serif, system-ui, sans-serif;
  line-height: 1.65;
}

a {
  color: var(--red-deep);
}

.wrap {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header,
.site-footer {
  padding: 28px 0;
}

.brand {
  display: flex;
  gap: 16px;
  align-items: center;
}

.chop {
  width: 72px;
  height: 72px;
  border: 3px solid var(--stamp);
  color: var(--stamp);
  display: grid;
  place-items: center;
  text-align: center;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.15;
  font-size: 15px;
  transform: rotate(-4deg);
  background: rgba(196, 43, 52, 0.04);
}

.lede {
  margin: 4px 0 0;
  color: var(--muted);
  max-width: 40rem;
}

.notice {
  margin: 0 0 20px;
  padding: 12px 14px;
  border-left: 4px solid var(--stamp);
  background: #fff7f2;
  color: var(--red-deep);
}

main h1 {
  margin: 0 0 8px;
  font-size: clamp(2rem, 5vw, 3.1rem);
  letter-spacing: 0.02em;
  line-height: 1.15;
}

.howto,
.panel,
.faq,
.site-footer {
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.howto,
.panel,
.faq {
  padding: 20px 22px;
  margin-bottom: 18px;
}

.howto h2,
.panel h2,
.faq h2,
.breakdown h3 {
  margin: 0 0 12px;
  font-size: 1.15rem;
}

.howto ol {
  margin: 0;
  padding-left: 1.2rem;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

button,
.ghost {
  appearance: none;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: #fffdf8;
  padding: 9px 14px;
  font: inherit;
  cursor: pointer;
}

button.secondary {
  background: transparent;
  color: var(--ink);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

label[for="sms-input"] {
  display: block;
  font-weight: 700;
  margin-bottom: 8px;
}

textarea {
  width: 100%;
  min-height: 280px;
  resize: vertical;
  border: 1px solid var(--line);
  background: #fff;
  color: inherit;
  padding: 14px;
  font: 15px/1.55 var(--mono);
}

.status {
  margin: 10px 0 0;
  color: var(--muted);
}

.kpis {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}

.kpi {
  border: 1px solid var(--line);
  padding: 14px;
  background: #fff;
}

.kpi span {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
}

.kpi strong {
  display: block;
  margin-top: 4px;
  font-size: 1.4rem;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.breakdown ul,
.unmatched-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.breakdown li,
.unmatched-list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

th,
td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  background: #f7f1e4;
  font-size: 0.92rem;
}

.unmatched {
  margin-top: 18px;
  padding: 14px;
  background: #fff8ee;
  border: 1px solid #ead2ae;
}

.unmatched-list li {
  display: block;
  font-family: var(--mono);
  font-size: 0.92rem;
  white-space: pre-wrap;
  word-break: break-word;
}

.muted {
  color: var(--muted);
}

.faq details {
  border-top: 1px solid var(--line);
  padding: 10px 0;
}

.faq details:first-of-type {
  border-top: 0;
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
}

.site-footer {
  margin: 8px auto 36px;
  padding: 18px 22px;
  color: var(--muted);
}

.fineprint {
  font-size: 0.92rem;
}

@media (max-width: 760px) {
  .kpis,
  .grid,
  .brand {
    grid-template-columns: 1fr;
    display: grid;
  }

  .chop {
    width: 64px;
    height: 64px;
  }

  textarea {
    min-height: 220px;
  }
}