/* ============================================================
   地铁出行小助手 · 样式
   浅色 + 官方线路色 + 卡片式布局，参考地铁线路图的克制感
   ============================================================ */

:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --ink: #14161a;
  --ink-2: #333842;
  --muted: #6b7280;
  --faint: #9aa1ab;
  --line: #e5e7eb;
  --line-2: #eef0f3;
  --accent: #1b4fd8;
  --accent-dark: #143db0;
  --accent-soft: #eef2fe;
  --danger: #c0392b;
  --ok: #0f8a52;
  --warn: #b45309;
  --radius: 14px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .06);
  --shadow: 0 2px 4px rgba(16, 24, 40, .04), 0 14px 30px -18px rgba(16, 24, 40, .35);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { margin: 0; line-height: 1.35; }
p { margin: 0; }
button { font: inherit; color: inherit; cursor: pointer; }
code { font-family: var(--mono); font-size: .92em; background: #f0f1f4; padding: 1px 5px; border-radius: 5px; }

/* ---------------- 顶栏 ---------------- */

.topbar {
  max-width: 1120px;
  margin: 0 auto;
  padding: 22px 20px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 12px; }
.logo { width: 44px; height: 44px; flex: none; }
.brand-text h1 { font-size: 20px; letter-spacing: .2px; }
.brand-text p { margin-top: 2px; font-size: 12.5px; color: var(--muted); }

.topbar-meta { display: flex; gap: 6px; flex-wrap: wrap; }

.badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 9px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .2px;
  white-space: nowrap;
}
.badge-ghost {
  background: #fff;
  color: var(--ink-2);
  border: 1px solid var(--line);
  font-weight: 500;
}

/* ---------------- 标签页 ---------------- */

.tabs {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  gap: 4px;
  overflow-x: auto;
  padding: 8px 20px;
  background: rgba(244, 245, 247, .88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  max-width: 1120px;
  margin: 0 auto;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }

.tab {
  flex: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink-2);
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  transition: background .15s, color .15s;
}
.tab:hover { background: #fff; border-color: var(--line); }
.tab.active { background: var(--ink); color: #fff; border-color: var(--ink); }

/* ---------------- 主体 ---------------- */

main { max-width: 1120px; margin: 0 auto; padding: 20px 20px 56px; }

.view { display: none; }
.view.active { display: block; animation: fade .18s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(3px); } to { opacity: 1; transform: none; } }

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 16px;
}

.muted { color: var(--muted); font-size: 13.5px; }
.note { color: var(--muted); font-size: 12.5px; line-height: 1.7; margin-top: 12px; }

/* ---------------- 城市选择 ---------------- */

.city-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }

.city-btn {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 14px;
  color: var(--ink-2);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: .15s;
}
.city-btn:hover { border-color: #c9cdd5; }
.city-btn.active { border-color: var(--ink); background: var(--ink); color: #fff; }
.city-btn .count { font-size: 11.5px; color: var(--faint); }
.city-btn.active .count { color: rgba(255, 255, 255, .65); }

/* ---------------- 起终点输入 ---------------- */

.inputs {
  display: grid;
  grid-template-columns: 1fr 40px 1fr auto;
  gap: 10px;
  align-items: end;
}

.field { position: relative; min-width: 0; }
.field label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 5px;
  letter-spacing: .4px;
}
.field input {
  width: 100%;
  height: 46px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fbfbfc;
  font-size: 15px;
  color: var(--ink);
  outline: none;
  transition: .15s;
}
.field input::placeholder { color: var(--faint); }
.field input:focus { border-color: var(--accent); background: #fff; box-shadow: 0 0 0 3px var(--accent-soft); }

.swap {
  width: 40px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
  color: var(--muted);
  font-size: 17px;
  line-height: 1;
}
.swap:hover { color: var(--accent); border-color: #c9cdd5; }

.primary {
  height: 46px;
  padding: 0 22px;
  border: 0;
  border-radius: 11px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .3px;
  transition: .15s;
}
.primary:hover { background: var(--accent-dark); }
.primary:active { transform: translateY(1px); }

/* 下拉建议 */
.suggest {
  display: none;
  position: absolute;
  z-index: 40;
  left: 0;
  right: 0;
  top: calc(100% + 6px);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  max-height: 268px;
  overflow: auto;
  padding: 5px;
}
.suggest.open { display: block; }
.sug-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 9px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
}
.sug-item:hover, .sug-item.hl { background: var(--accent-soft); }
.sug-item .name { font-weight: 500; }
.sug-item .lines { display: flex; gap: 4px; margin-left: auto; }

.prefs {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.pref-label { font-size: 12px; color: var(--muted); letter-spacing: .4px; }
.pref-hint { font-size: 12px; color: var(--faint); margin-left: 4px; }

.chip {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 13px;
  color: var(--ink-2);
  transition: .15s;
}
.chip:hover { border-color: #b9c0cc; color: var(--ink); }
.chip.active { background: var(--accent-soft); border-color: #c3cef9; color: var(--accent-dark); font-weight: 600; }

.chips { display: flex; gap: 7px; flex-wrap: wrap; }

/* ---------------- 结果区 ---------------- */

.results { margin-top: 16px; }

.empty {
  background: #fff;
  border: 1px dashed #d5d9e0;
  border-radius: 18px;
  padding: 36px 22px;
  text-align: center;
}
.empty-title { font-size: 15px; font-weight: 600; }
.empty-sub { font-size: 13px; color: var(--muted); margin: 6px 0 16px; }
.empty .chips { justify-content: center; }

.result-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin: 4px 2px 12px;
  flex-wrap: wrap;
}
.result-title { font-size: 16px; font-weight: 650; }
.result-title span { color: var(--muted); font-weight: 400; font-size: 13px; margin-left: 8px; }

.route-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
  transition: .15s;
}
.route-card:hover { box-shadow: var(--shadow); border-color: #d8dde5; }
.route-card.best { border-color: #c3cef9; box-shadow: 0 0 0 3px var(--accent-soft); }

.route-head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-2);
  margin-bottom: 14px;
}
.route-num {
  width: 24px; height: 24px;
  border-radius: 7px;
  background: var(--ink);
  color: #fff;
  font-size: 12.5px;
  font-weight: 700;
  display: grid;
  place-items: center;
  flex: none;
}
.route-metrics { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.route-metrics .big { font-size: 20px; font-weight: 700; letter-spacing: -.3px; }
.route-metrics .big small { font-size: 12px; font-weight: 500; color: var(--muted); margin-left: 2px; }
.route-metrics .meta { font-size: 13px; color: var(--ink-2); }
.route-metrics .fare { color: var(--muted); font-size: 12.5px; }
.route-badges { display: flex; gap: 5px; margin-left: auto; flex-wrap: wrap; }

.tag {
  font-size: 11.5px;
  padding: 2px 8px;
  border-radius: 999px;
  background: #f2f3f5;
  color: var(--ink-2);
  border: 1px solid var(--line);
  white-space: nowrap;
}
.tag.best { background: var(--accent-soft); border-color: #c3cef9; color: var(--accent-dark); font-weight: 600; }
.tag.warn { background: #fff7ed; border-color: #fed7aa; color: var(--warn); }

/* 线路色块 */
.lp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 22px;
  padding: 0 7px;
  border-radius: 6px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .2px;
  white-space: nowrap;
  flex: none;
}

/* 行程时间轴 */
.track { position: relative; padding-left: 2px; }

.stop-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 3px 0;
}
.stop-dot {
  width: 11px; height: 11px;
  border-radius: 50%;
  border: 2px solid var(--ink);
  background: #fff;
  margin-top: 5px;
  flex: none;
}
.stop-dot.plain { border-color: #c7ccd4; }
.stop-name { font-size: 14px; font-weight: 550; }
.stop-name .side { font-size: 12px; color: var(--muted); font-weight: 400; margin-left: 6px; }

.leg {
  display: flex;
  gap: 10px;
  padding: 7px 0 7px 5px;
  margin-left: 5px;
  border-left: 3px solid #ddd;
  padding-left: 12px;
  position: relative;
}
.leg .line-chip { display: flex; flex-direction: column; align-items: center; gap: 6px; flex: none; padding-top: 1px; }
.leg-body { min-width: 0; flex: 1; }
.leg-title { font-size: 13.5px; font-weight: 600; }
.leg-sub { font-size: 12.5px; color: var(--muted); margin-top: 1px; }
.leg-stations {
  display: none;
  margin-top: 8px;
  font-size: 12.5px;
  color: var(--ink-2);
  line-height: 1.9;
  background: #fafbfc;
  border: 1px solid var(--line-2);
  border-radius: 9px;
  padding: 8px 10px;
}
.leg.open .leg-stations { display: block; }
.leg-stations b { font-weight: 650; }

.transfer-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 2px 0 2px 5px;
  padding: 7px 12px;
  border-left: 3px dashed #cbd2dc;
  font-size: 12.5px;
  color: var(--ink-2);
}
.transfer-row .ico {
  width: 18px; height: 18px;
  border-radius: 50%;
  background: #eef0f3;
  color: var(--muted);
  display: grid;
  place-items: center;
  font-size: 11px;
  flex: none;
}

.route-foot {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line-2);
  flex-wrap: wrap;
}
.link-btn {
  border: 0;
  background: transparent;
  color: var(--accent);
  font-size: 12.5px;
  padding: 2px 0;
  font-weight: 500;
}
.link-btn:hover { text-decoration: underline; }
.route-foot .spacer { flex: 1; }
.route-foot .hint { font-size: 12px; color: var(--faint); }

/* ---------------- 问答 ---------------- */

.chat-panel { padding: 0; overflow: hidden; }
.chat-log {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-height: 62vh;
  overflow-y: auto;
  background:
    radial-gradient(circle at 1px 1px, #e9ebef 1px, transparent 0) 0 0 / 14px 14px;
  background-color: #fcfcfd;
}

.msg { max-width: 88%; }
.msg.user { align-self: flex-end; }
.msg.bot { align-self: flex-start; width: 100%; max-width: 100%; }

.msg-head { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; flex-wrap: wrap; }
.msg-title { font-size: 13px; font-weight: 600; color: var(--ink-2); }

.intent-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: #eef0f3;
  color: var(--ink-2);
  font-weight: 600;
  letter-spacing: .3px;
}
.intent-badge.route { background: #e8f1ff; color: #1b4fd8; }
.intent-badge.line { background: #e9f7ef; color: #0f8a52; }
.intent-badge.station { background: #fdf0e6; color: #b45309; }
.intent-badge.concept { background: #f3ecfe; color: #6d28d9; }
.intent-badge.refusal { background: #fdeaea; color: #b91c1c; }
.intent-badge.crosscity { background: #eef0f3; color: #4b5563; }

.bubble {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 13px 15px;
  box-shadow: var(--shadow-sm);
}
.msg.user .bubble {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
  border-bottom-right-radius: 5px;
}
.msg.bot .bubble { border-bottom-left-radius: 5px; }

.msg-text {
  font-size: 14px;
  line-height: 1.78;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--ink-2);
}
.msg.user .msg-text { color: #fff; }

.src-toggle {
  margin-top: 10px;
  border: 0;
  background: #f5f6f8;
  border-radius: 8px;
  padding: 5px 10px;
  font-size: 12px;
  color: var(--muted);
}
.src-toggle:hover { color: var(--ink); }
.sources { margin-top: 8px; display: none; }
.sources.open { display: block; }
.source-item {
  font-size: 12.5px;
  color: var(--ink-2);
  border-left: 2px solid #dfe3ea;
  padding: 5px 0 5px 10px;
  margin-bottom: 6px;
}
.source-item .sid {
  display: inline-block;
  min-width: 26px;
  color: var(--accent);
  font-weight: 700;
  font-family: var(--mono);
  font-size: 11.5px;
}
.source-item .st { font-weight: 600; }
.source-item .ss { color: var(--muted); display: block; margin-top: 2px; }
.source-item .score { color: var(--faint); font-family: var(--mono); font-size: 11px; margin-left: 6px; }

.msg .mini-routes { margin-top: 12px; display: flex; flex-direction: column; gap: 8px; }
.mini-route {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 9px 11px;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 7px;
  flex-wrap: wrap;
  background: #fcfcfd;
}
.mini-route .arw { color: var(--faint); font-size: 12px; }
.mini-route .m { color: var(--muted); font-size: 12px; margin-left: auto; }

.ask-form {
  display: flex;
  gap: 9px;
  padding: 12px 14px;
  border-top: 1px solid var(--line);
  background: #fff;
}
.ask-form input {
  flex: 1;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 0 13px;
  font-size: 14.5px;
  outline: none;
  background: #fbfbfc;
}
.ask-form input:focus { border-color: var(--accent); background: #fff; box-shadow: 0 0 0 3px var(--accent-soft); }
.chat-panel > .chips { padding: 0 14px 14px; background: #fff; }

/* ---------------- 知识库 ---------------- */

.kb-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.kb-head h2 { font-size: 17px; margin-bottom: 3px; }
.kb-search input {
  width: 280px;
  max-width: 100%;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0 12px;
  font-size: 14px;
  outline: none;
  background: #fbfbfc;
}
.kb-search input:focus { border-color: var(--accent); background: #fff; box-shadow: 0 0 0 3px var(--accent-soft); }

.kb-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 10px; margin-top: 14px; }
.kb-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 13px 14px;
  background: #fff;
  cursor: pointer;
  transition: .15s;
}
.kb-card:hover { border-color: #c9cfd9; box-shadow: var(--shadow-sm); }
.kb-card .kb-top { display: flex; align-items: center; gap: 7px; margin-bottom: 5px; }
.kb-card h4 { margin: 0; font-size: 14px; font-weight: 650; }
.kb-card .kb-snip { font-size: 12.5px; color: var(--muted); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.kb-card.open { grid-column: 1 / -1; }
.kb-card.open .kb-snip { display: block; -webkit-line-clamp: unset; white-space: pre-wrap; color: var(--ink-2); }
.kb-type { font-size: 10.5px; padding: 1px 7px; border-radius: 999px; background: #f2f3f5; color: var(--muted); flex: none; }
.kb-type.concept { background: #f3ecfe; color: #6d28d9; }
.kb-type.metro { background: #e9f7ef; color: #0f8a52; }
.kb-type.guide { background: #fff5e6; color: #b45309; }
.kb-type.city { background: #e8f1ff; color: #1b4fd8; }
.kb-type.line { background: #eef0f3; color: #4b5563; }
.kb-empty { color: var(--muted); font-size: 13px; padding: 24px 0; text-align: center; grid-column: 1 / -1; }

/* ---------------- 拆字 ---------------- */

.token-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: start; }
.token-left textarea {
  width: 100%;
  min-height: 108px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 13px;
  font-size: 15px;
  line-height: 1.7;
  outline: none;
  background: #fbfbfc;
  font-family: inherit;
}
.token-left textarea:focus { border-color: var(--accent); background: #fff; box-shadow: 0 0 0 3px var(--accent-soft); }
.token-left .chips { margin-top: 10px; }
.token-stats { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 14px; }
.token-stats .st { font-size: 12px; color: var(--muted); }
.token-stats .st b { display: block; font-size: 20px; color: var(--ink); font-weight: 650; letter-spacing: -.4px; }

.token-out {
  min-height: 108px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  background: #fcfcfd;
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  align-content: flex-start;
}
.tok {
  padding: 2px 7px;
  border-radius: 6px;
  font-size: 14px;
  font-family: var(--mono);
  border: 1px solid transparent;
  white-space: pre;
}
.tok.idx {
  font-size: 10px;
  color: var(--faint);
  font-family: var(--mono);
  align-self: center;
  padding: 0 1px;
}
.tok-space { color: var(--faint); }

.explain { margin-top: 22px; border-top: 1px solid var(--line); padding-top: 16px; }
.explain h3 { font-size: 15px; margin-bottom: 8px; }
.explain dl { margin: 0; }
.explain dt { font-size: 13.5px; font-weight: 600; margin-top: 12px; }
.explain dd { margin: 3px 0 0; font-size: 13px; color: var(--muted); line-height: 1.75; }

/* ---------------- 概念地图 ---------------- */

.map { display: flex; flex-direction: column; gap: 0; margin: 6px 0 10px; }
.layer {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--line);
}
.layer:last-child { border-bottom: 0; }
.layer-label {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 1px;
  writing-mode: horizontal-tb;
  padding-top: 14px;
  border-left: 2px solid var(--line);
  padding-left: 10px;
}
.layer-label b { display: block; font-size: 14px; color: var(--ink); letter-spacing: 0; margin-bottom: 2px; }
.layer-cards { display: flex; gap: 9px; flex-wrap: wrap; align-items: stretch; }
.map-card {
  flex: 1 1 150px;
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 10px 12px;
  background: #fff;
  cursor: pointer;
  transition: .15s;
  position: relative;
}
.map-card:hover { border-color: #c3cef9; background: #fcfdff; }
.map-card b { font-size: 13.5px; display: block; }
.map-card span { font-size: 11.5px; color: var(--muted); display: block; margin-top: 2px; line-height: 1.6; }
.map-card::after {
  content: "→";
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
  color: #cdd3dc;
  font-size: 13px;
}
.layer-cards .map-card:last-child::after { content: ""; }

.concept-list { display: grid; grid-template-columns: 1fr; gap: 8px; margin-top: 8px; }
.concept-item {
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 12px 14px;
  background: #fff;
}
.concept-item h4 { margin: 0 0 6px; font-size: 14.5px; }
.concept-item h4 .no { color: var(--faint); font-family: var(--mono); font-size: 12px; margin-right: 7px; }
.concept-item p { font-size: 13.5px; color: var(--ink-2); line-height: 1.8; white-space: pre-wrap; }
.concept-item .t { margin-top: 8px; display: flex; gap: 6px; flex-wrap: wrap; }

/* ---------------- 关于 ---------------- */

.about-block { margin-bottom: 24px; }
.about-block h3 { font-size: 15px; margin-bottom: 8px; }
.lead {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-2);
  background: var(--accent-soft);
  border-radius: 12px;
  padding: 14px 16px;
  border: 1px solid #dfe6fb;
}

.data-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 9px; }
.data-cell {
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 11px 12px;
  background: #fcfcfd;
}
.data-cell b { display: block; font-size: 21px; font-weight: 700; letter-spacing: -.5px; }
.data-cell span { font-size: 12px; color: var(--muted); }

pre.code {
  background: #14161a;
  color: #e8eaed;
  border-radius: 12px;
  padding: 15px 16px;
  font-family: var(--mono);
  font-size: 12.2px;
  line-height: 1.75;
  overflow: auto;
  margin: 8px 0 0;
  white-space: pre-wrap;
  word-break: break-word;
}

.rules { margin: 6px 0 0; padding-left: 18px; }
.rules li { font-size: 13.5px; color: var(--ink-2); line-height: 1.85; margin-bottom: 4px; }
.rules b { color: var(--ink); }

/* ---------------- 页脚 ---------------- */

.footer {
  max-width: 1120px;
  margin: 0 auto;
  padding: 22px 20px 40px;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 12px;
  display: flex;
  gap: 7px;
  flex-wrap: wrap;
}
.footer-sep { color: #d5d9e0; }

/* ---------------- 响应式 ---------------- */

@media (max-width: 860px) {
  .inputs { grid-template-columns: 1fr 1fr auto; }
  .inputs .swap { order: 3; grid-column: 1; width: 100%; height: 38px; }
  .inputs .primary { grid-column: 3; grid-row: 1 / span 2; height: 100%; }
  .token-grid { grid-template-columns: 1fr; }
  .layer { grid-template-columns: 1fr; gap: 8px; }
  .layer-label { border-left: 0; padding-left: 0; padding-top: 0; border-top: 2px solid var(--line); padding-top: 8px; }
  .map-card::after { content: ""; }
}

@media (max-width: 560px) {
  .topbar { padding: 16px 14px 10px; }
  main { padding: 14px 14px 40px; }
  .panel { padding: 15px; border-radius: 15px; }
  .inputs { grid-template-columns: 1fr auto; }
  .inputs .swap { grid-column: 2; grid-row: 1; width: 40px; height: 46px; }
  .inputs .primary { grid-column: 1 / -1; grid-row: 3; }
  .msg { max-width: 100%; }
  .chat-log { max-height: none; }
  .kb-list { grid-template-columns: 1fr; }
  .brand-text h1 { font-size: 17px; }
}