:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --panel-2: #273449;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --ok: #34d399;
  --warn: #fbbf24;
  --bad: #f87171;
  --border: #334155;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
.container { max-width: 760px; margin: 0 auto; padding: 24px 16px 64px; }
header { text-align: center; padding: 16px 0 8px; }
header h1 { font-size: 1.6rem; margin: 0 0 4px; }
header .sub { color: var(--muted); font-size: 0.9rem; }
.lang-bar { text-align: right; margin: 8px 0 16px; }
.lang-bar button {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  padding: 6px 14px; border-radius: 8px; cursor: pointer; margin-left: 8px;
}
.lang-bar button.active { background: var(--accent); color: #0f172a; border-color: var(--accent); font-weight: 600; }
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  padding: 20px; margin-bottom: 20px;
}
.card h2 { margin: 0 0 12px; font-size: 1.15rem; }
.card h2 .badge { font-size: 0.7rem; vertical-align: middle; margin-left: 6px; }
.fee-note { font-size: 0.85rem; color: var(--muted); margin: 0 0 4px; }
label { display: block; margin: 12px 0 4px; font-size: 0.9rem; color: var(--muted); }
select, input[type="number"] {
  width: 100%; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text); font-size: 1rem;
}
select:focus, input:focus { outline: 2px solid var(--accent); }
.option-group { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.option {
  display: flex; align-items: flex-start; gap: 10px; padding: 10px 12px;
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 10px; cursor: pointer;
}
.option:hover { border-color: var(--accent); }
.option input { margin-top: 3px; }
.btn {
  display: inline-block; margin-top: 16px; padding: 11px 20px; border: none; border-radius: 10px;
  background: var(--accent); color: #0f172a; font-size: 1rem; font-weight: 600; cursor: pointer;
}
.btn:hover { opacity: 0.9; }
.result { margin-top: 16px; padding: 16px; border-radius: 10px; border: 1px solid var(--border); background: var(--panel-2); }
.result.ok { border-color: var(--ok); }
.result.warn { border-color: var(--warn); }
.result.bad { border-color: var(--bad); }
.result h3 { margin: 0 0 8px; }
.result .src { color: var(--muted); font-size: 0.8rem; margin-top: 8px; }
.checklist { display: flex; flex-direction: column; gap: 10px; margin-top: 8px; }
.check-item { display: flex; align-items: center; gap: 10px; padding: 10px 12px; background: var(--panel-2); border-radius: 10px; border: 1px solid var(--border); }
.check-item input { width: 18px; height: 18px; }
.check-item .t { flex: 1; }
.summary { margin-top: 16px; }
.summary .line { padding: 6px 0; border-bottom: 1px solid var(--border); }
.disclaimer {
  font-size: 0.82rem; color: var(--muted); background: var(--panel);
  border: 1px dashed var(--border); border-radius: 12px; padding: 16px; margin-top: 24px;
}
.tag { display: inline-block; padding: 1px 8px; border-radius: 6px; font-size: 0.72rem; font-weight: 600; }
.tag.critical { background: #7f1d1d; color: #fecaca; }
.tag.high { background: #78350f; color: #fde68a; }
.tag.info { background: #0c4a6e; color: #bae6fd; }
.dropzone {
  border: 2px dashed var(--border); border-radius: 12px; padding: 32px 16px;
  text-align: center; color: var(--muted); cursor: pointer; margin-top: 8px;
  transition: border-color .15s, background .15s;
}
.dropzone:hover, .dropzone.dragover { border-color: var(--accent); background: var(--panel-2); color: var(--text); }
.pdf-name { font-size: 0.85rem; color: var(--muted); margin-top: 6px; word-break: break-all; }
input[type="text"] {
  width: 100%; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text); font-size: 1rem;
}
input[type="text"]:focus { outline: 2px solid var(--accent); }
.result ul { margin: 8px 0 0; padding-left: 20px; }
.cert {
  white-space: pre-wrap; font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.82rem; background: #0f172a; border: 1px solid var(--border);
  border-radius: 10px; padding: 16px; margin: 12px 0; line-height: 1.5;
  color: #cbd5e1; overflow-x: auto;
}
.btn-sm { margin-top: 4px; margin-right: 8px; padding: 8px 14px; font-size: 0.85rem; }
.upgrade-card { border-color: var(--accent); background: linear-gradient(135deg, #1e293b 0%, #0c4a6e 100%); }
.upgrade-card h2 { color: #e0f2fe; }
.pro-badge { color: var(--ok); font-weight: 600; }
.key-row { display: flex; gap: 8px; margin-top: 10px; align-items: center; }
.key-row input { flex: 1; }
.key-row .btn { margin-top: 0; }
a.lemonsqueezy-button { text-decoration: none; display: inline-block; }
#upgrade-card.pulse { animation: pulse 0.6s ease 2; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(56,189,248,0); } 50% { box-shadow: 0 0 0 6px rgba(56,189,248,0.4); } }