:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel-2: #1c2530;
  --border: #2a3441;
  --text: #e6edf3;
  --muted: #8b98a5;
  --accent: #4f9dff;
  --accent-2: #7c5cff;
  --good: #3fb950;
  --warn: #d29922;
  --bad: #f85149;
  --radius: 12px;
  --shadow: 0 8px 30px rgba(0,0,0,.35);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #1a2740 0%, var(--bg) 55%);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

/* Topbar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 20px clamp(16px, 4vw, 48px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; gap: 14px; align-items: flex-start; }
.logo { font-size: 34px; line-height: 1; }
.topbar h1 { margin: 0; font-size: clamp(18px, 2.4vw, 24px); }
.tagline { margin: 4px 0 0; color: var(--muted); font-size: 13.5px; max-width: 640px; }

/* Layout */
.layout {
  display: grid; grid-template-columns: minmax(340px, 440px) 1fr;
  gap: 22px; padding: 24px clamp(16px, 4vw, 48px);
  align-items: start;
}
@media (max-width: 900px) { .layout { grid-template-columns: 1fr; } }

.panel {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow);
}
.panel-title { margin: 0 0 18px; font-size: 15px; color: var(--accent); letter-spacing: .3px; }

/* Form */
.field { display: block; margin-bottom: 16px; }
.field > span, .field > legend { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.field legend small { color: #5f6b78; font-weight: normal; }
input, select, textarea {
  width: 100%; background: var(--panel-2); border: 1px solid var(--border);
  color: var(--text); border-radius: 8px; padding: 10px 12px; font-size: 14px;
  font-family: inherit; transition: border-color .15s;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
textarea { resize: vertical; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 480px) { .two-col { grid-template-columns: 1fr; } }
fieldset.field { border: 0; padding: 0; margin: 0 0 16px; }

.chip-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
@media (max-width: 480px) { .chip-grid { grid-template-columns: 1fr; } }
.chip {
  display: flex; align-items: center; gap: 8px; padding: 9px 11px;
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px;
  cursor: pointer; font-size: 13px; user-select: none; transition: all .12s;
}
.chip:hover { border-color: #3d4b5c; }
.chip input { width: auto; }
.chip.on { border-color: var(--accent); background: rgba(79,157,255,.12); }
.chip .dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }

.actions { display: flex; gap: 10px; margin-top: 6px; }
.primary-btn {
  flex: 1; background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; border: 0; border-radius: 9px; padding: 12px; font-size: 15px;
  font-weight: 600; cursor: pointer; transition: transform .1s, filter .15s;
}
.primary-btn:hover { filter: brightness(1.08); }
.primary-btn:active { transform: translateY(1px); }
.ghost-btn {
  background: transparent; color: var(--muted); border: 1px solid var(--border);
  border-radius: 9px; padding: 12px 16px; font-size: 14px; cursor: pointer;
  text-decoration: none; display: inline-flex; align-items: center; transition: all .15s;
}
.ghost-btn:hover { color: var(--text); border-color: var(--accent); }
.privacy-note { font-size: 12px; color: var(--muted); margin: 14px 0 0; }

/* Result */
.result-panel { min-height: 320px; }
.empty-state { text-align: center; color: var(--muted); padding: 60px 20px; }
.empty-emoji { font-size: 48px; margin-bottom: 12px; }
.hidden { display: none; }

/* Score */
.score-head { display: flex; align-items: center; gap: 20px; margin-bottom: 20px; flex-wrap: wrap; }
.gauge {
  --p: 0; width: 108px; height: 108px; border-radius: 50%; flex-shrink: 0;
  display: grid; place-items: center; position: relative;
  background: conic-gradient(var(--gc) calc(var(--p) * 1%), #232c37 0);
}
.gauge::before { content: ""; position: absolute; inset: 9px; border-radius: 50%; background: var(--panel); }
.gauge b { position: relative; font-size: 30px; }
.gauge span { position: relative; font-size: 11px; color: var(--muted); margin-top: -4px; }
.verdict h3 { margin: 0 0 4px; font-size: 20px; }
.verdict p { margin: 0; color: var(--muted); font-size: 13.5px; max-width: 420px; }
.verdict .badge {
  display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px;
  font-weight: 600; margin-bottom: 8px;
}

/* Report sections */
.report h4 {
  font-size: 14px; margin: 24px 0 12px; padding-bottom: 8px;
  border-bottom: 1px solid var(--border); color: var(--accent);
  display: flex; align-items: center; gap: 8px;
}
.tool {
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 10px;
  padding: 13px 15px; margin-bottom: 10px;
}
.tool-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.tool code { font-size: 13.5px; color: #79c0ff; font-weight: 600; }
.tool p { margin: 6px 0 8px; font-size: 13px; color: var(--muted); }
.tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag { font-size: 11px; padding: 2px 8px; border-radius: 5px; border: 1px solid var(--border); color: var(--muted); }
.tag.read { color: var(--good); border-color: rgba(63,185,80,.4); }
.tag.write { color: var(--warn); border-color: rgba(210,153,34,.4); }
.tag.danger { color: var(--bad); border-color: rgba(248,81,73,.4); }
.risk-pill { font-size: 11px; padding: 2px 9px; border-radius: 999px; font-weight: 600; white-space: nowrap; }

ul.checklist { list-style: none; padding: 0; margin: 0; }
ul.checklist li {
  position: relative; padding: 8px 8px 8px 30px; font-size: 13.5px;
  border-bottom: 1px solid rgba(42,52,65,.5);
}
ul.checklist li::before {
  content: "☐"; position: absolute; left: 8px; color: var(--accent); font-size: 15px;
}
ul.checklist li.crit::before { content: "⚠"; color: var(--bad); }
ul.checklist li .lbl { font-weight: 600; color: var(--text); }

.boundary { display: grid; gap: 10px; }
.b-row { display: flex; gap: 12px; align-items: flex-start; padding: 11px 13px; border-radius: 9px; border: 1px solid var(--border); }
.b-row .b-icon { font-size: 18px; }
.b-row.allow { background: rgba(63,185,80,.07); border-color: rgba(63,185,80,.3); }
.b-row.confirm { background: rgba(210,153,34,.07); border-color: rgba(210,153,34,.3); }
.b-row.gate { background: rgba(248,81,73,.07); border-color: rgba(248,81,73,.3); }
.b-row h5 { margin: 0 0 3px; font-size: 13.5px; }
.b-row p { margin: 0; font-size: 12.5px; color: var(--muted); }

.step { display: flex; gap: 12px; margin-bottom: 4px; padding: 6px 0; }
.step .num {
  flex-shrink: 0; width: 24px; height: 24px; border-radius: 50%; background: var(--panel-2);
  border: 1px solid var(--accent); color: var(--accent); display: grid; place-items: center;
  font-size: 12px; font-weight: 700;
}
.step .txt { font-size: 13.5px; padding-top: 1px; }
.step .txt b { color: var(--text); }
.step .txt span { color: var(--muted); }

.signals { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.signal { font-size: 11.5px; padding: 3px 9px; border-radius: 6px; background: var(--panel-2); border: 1px solid var(--border); }
.signal.pos { color: var(--good); } .signal.neg { color: var(--bad); }

.report-actions { display: flex; gap: 10px; margin-top: 22px; }
.report-actions button { flex: 1; }
.copied { color: var(--good) !important; border-color: var(--good) !important; }

/* Explain */
.explain { padding: 40px clamp(16px, 4vw, 48px); max-width: 1000px; }
.explain h2 { font-size: 20px; }
.explain-grid { list-style: none; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 16px 0; }
@media (max-width: 700px) { .explain-grid { grid-template-columns: 1fr; } }
.explain-grid li { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 14px; font-size: 13.5px; color: var(--muted); }
.explain-grid li b { color: var(--text); }
.foot-note { color: var(--muted); font-size: 13px; }
.site-foot { text-align: center; padding: 24px; color: var(--muted); font-size: 12.5px; border-top: 1px solid var(--border); }