:root {
  --bg: #f6f7f9; --panel: #ffffff; --border: #e8eaee;
  --text: #292929; --muted: #7e8794; --accent: #ff7800; --accent-bright: #ff9100;
  --accent-soft: #ffeedf;
  --good: #0f9d6a; --good-soft: #e6f6ef;
  --warn: #b97f0a; --warn-soft: #fff4dd;
  --bad: #d64545; --bad-soft: #fdeaea;
  --explore: #1976c5; --explore-soft: #e8f2fc;
  --shadow: 0 1px 3px rgba(41,41,41,.08);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: var(--bg); color: var(--text);
  font-family: Arial, "微軟正黑體", "Microsoft JhengHei", "PingFang TC", "Noto Sans TC", sans-serif;
  line-height: 1.6;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 32px 20px 60px; }
header h1 { font-size: 1.7rem; letter-spacing: .5px; }
header .sub { color: var(--muted); margin-top: 8px; }
.privacy {
  margin-top: 12px; background: var(--good-soft); color: #0b6b48;
  border: 1px solid #bfe6d5; border-radius: 10px; padding: 9px 14px; font-size: .88rem;
}
.gate {
  margin-top: 28px; background: var(--warn-soft); border: 1px solid var(--warn);
  border-radius: 12px; padding: 18px 20px; color: #8a5a00;
}
.gate code { background: #fff; padding: 1px 6px; border-radius: 5px; border: 1px solid var(--border); }

.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  padding: 20px; margin-top: 20px; box-shadow: var(--shadow);
}
.card h2 { font-size: 1.1rem; display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.step {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px; border-radius: 50%; background: var(--accent);
  color: #fff; font-size: .9rem; font-weight: 700;
}

.filebox { display: block; cursor: pointer; }
.filebox-inner {
  border: 2px dashed var(--border); border-radius: 12px; padding: 28px 20px;
  text-align: center; transition: border-color .15s, background .15s;
}
.filebox:hover .filebox-inner { border-color: var(--accent-bright); background: #fffaf4; }
.filebox.filled .filebox-inner { border-color: var(--good); background: var(--good-soft); border-style: solid; }
.filebox-icon { font-size: 1.8rem; color: var(--accent); line-height: 1; }
.filebox-text { margin-top: 8px; color: var(--muted); font-size: .92rem; }
.filebox.filled .filebox-text { color: #0b6b48; font-weight: 600; }

.paste-fallback { margin-top: 12px; }
.paste-fallback summary { cursor: pointer; color: var(--muted); font-size: .88rem; }
textarea {
  width: 100%; margin-top: 10px; border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 14px; font-size: .92rem; font-family: inherit; line-height: 1.6; resize: vertical;
}
textarea:focus { outline: none; border-color: var(--accent-bright); }

.go {
  display: block; width: 100%; margin-top: 22px; border: none; border-radius: 12px;
  background: var(--accent); color: #fff; padding: 15px; font-size: 1.05rem; font-weight: 700;
  cursor: pointer; transition: background .15s;
}
.go:hover { background: var(--accent-bright); }
.go:disabled { background: var(--muted); cursor: not-allowed; }

.status {
  margin-top: 16px; text-align: center; color: var(--muted); font-size: .92rem;
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 14px;
}
.status.error { color: var(--bad); background: var(--bad-soft); border-color: #f3c0c0; }
.spin {
  display: inline-block; width: 15px; height: 15px; margin-right: 8px; vertical-align: -2px;
  border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- 報告區 ---- */
.report { margin-top: 24px; }
.score-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 16px;
  padding: 24px; box-shadow: var(--shadow); display: flex; align-items: center; gap: 24px;
}
.score-ring {
  flex: none; width: 108px; height: 108px; border-radius: 50%;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: #fff; box-shadow: var(--shadow);
}
.score-ring .num { font-size: 2.1rem; font-weight: 800; line-height: 1; }
.score-ring .unit { font-size: .78rem; opacity: .9; margin-top: 2px; }
.verdict-block { flex: 1; }
.verdict-badge {
  display: inline-block; font-size: .95rem; font-weight: 700; padding: 4px 14px;
  border-radius: 20px; margin-bottom: 8px;
}
.verdict-reason { color: #5c6672; font-size: .95rem; }

.v-good, .ring-good { background: var(--good); }
.badge-good { background: var(--good-soft); color: var(--good); }
.v-warn, .ring-warn { background: var(--warn); }
.badge-warn { background: var(--warn-soft); color: var(--warn); }
.v-bad, .ring-bad { background: var(--bad); }
.badge-bad { background: var(--bad-soft); color: var(--bad); }

.block {
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  padding: 18px 20px; margin-top: 16px; box-shadow: var(--shadow);
}
.block h3 { font-size: 1.02rem; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.block h3 .dot { width: 9px; height: 9px; border-radius: 50%; }
.block ul { list-style: none; }
.block li { padding: 6px 0; padding-left: 22px; position: relative; font-size: .93rem; }
.block li::before { position: absolute; left: 2px; top: 6px; }
.list-good li::before { content: "✓"; color: var(--good); font-weight: 700; }
.list-bad li::before { content: "✗"; color: var(--bad); font-weight: 700; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  background: var(--warn-soft); color: var(--warn); border: 1px solid #ecd9a6;
  border-radius: 20px; padding: 4px 12px; font-size: .86rem; font-weight: 600;
}

.weak-item { border-top: 1px dashed var(--border); padding: 12px 0; }
.weak-item:first-child { border-top: none; padding-top: 2px; }
.weak-orig { font-size: .9rem; color: var(--muted); }
.weak-orig b { color: var(--bad); font-weight: 600; }
.weak-sugg { font-size: .93rem; margin-top: 6px; }
.weak-sugg b { color: var(--good); font-weight: 600; }

.advice {
  background: var(--accent-soft); border: 1px solid #ffd9b0; border-left: 4px solid var(--accent);
  border-radius: 12px; padding: 16px 18px; margin-top: 16px; font-size: .95rem; color: #7a4200;
}
.advice b { display: block; margin-bottom: 6px; color: var(--accent); }

footer {
  margin-top: 44px; color: var(--muted); font-size: .82rem;
  border-top: 1px solid var(--border); padding-top: 18px;
}

@media (max-width: 520px) {
  .score-card { flex-direction: column; text-align: center; gap: 16px; }
}