:root {
  --accent: #e02e24;
  --accent-soft: #fdeceb;
  --bg: #f6f6f8;
  --card: #ffffff;
  --text: #1f2329;
  --text-2: #6b7280;
  --border: #e5e7eb;
  --tag-bg: #f3f4f6;
  --shadow: 0 1px 3px rgba(0, 0, 0, .07);
}
@media (prefers-color-scheme: dark) {
  :root {
    --accent: #ff5d52;
    --accent-soft: #3a2321;
    --bg: #121417;
    --card: #1c1f24;
    --text: #e8eaed;
    --text-2: #9aa0a6;
    --border: #33373d;
    --tag-bg: #2a2e34;
    --shadow: 0 1px 3px rgba(0, 0, 0, .4);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* ---------- 顶栏搜索 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.topbar-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo { font-size: 18px; white-space: nowrap; display: flex; align-items: center; gap: 4px; }
.logo b { color: var(--accent); font-size: 16px; }
@media (max-width: 420px) { .logo b { display: none; } }

.searchbox { position: relative; flex: 1; display: flex; }
#q {
  flex: 1;
  min-width: 0;
  font-size: 16px;
  padding: 8px 12px;
  border: 2px solid var(--border);
  border-right: none;
  border-radius: 20px 0 0 20px;
  background: var(--bg);
  color: var(--text);
  outline: none;
}
#q:focus { border-color: var(--accent); }
#go {
  font-size: 16px;
  padding: 0 16px;
  border: 2px solid var(--accent);
  background: var(--accent);
  color: #fff;
  border-radius: 0 20px 20px 0;
  cursor: pointer;
}

.sugg {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .15);
  overflow: hidden;
  max-height: 60vh;
  overflow-y: auto;
}
.sugg-item { padding: 8px 14px; cursor: pointer; display: flex; gap: 10px; align-items: baseline; }
.sugg-item:hover, .sugg-item.active { background: var(--accent-soft); }
.sugg-item b { flex-shrink: 0; }
.sugg-item span {
  color: var(--text-2);
  font-size: 13px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- 主体 ---------- */
#main { max-width: 720px; margin: 0 auto; padding: 14px 12px 60px; }
.hint { color: var(--text-2); text-align: center; font-size: 14px; margin-top: 40px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 16px; }
.chip {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 4px 14px;
  font-size: 14px;
  cursor: pointer;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 14px 16px;
  margin-bottom: 12px;
  overflow-wrap: break-word;
}
.card h2 {
  font-size: 15px;
  margin: 0 0 10px;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* 词头 */
.headword { font-size: 26px; font-weight: 700; margin: 0 0 4px; }
.phones { display: flex; flex-wrap: wrap; gap: 6px 16px; color: var(--text-2); font-size: 14px; }
.phone-btn {
  border: none;
  background: none;
  color: var(--text-2);
  font-size: 14px;
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 6px;
}
.phone-btn:hover { background: var(--accent-soft); color: var(--accent); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.tag {
  background: var(--tag-bg);
  color: var(--text-2);
  border-radius: 4px;
  font-size: 12px;
  padding: 1px 8px;
}
.wfs { margin-top: 8px; font-size: 13px; color: var(--text-2); display: flex; flex-wrap: wrap; gap: 4px 14px; }
.wfs b { color: var(--text); font-weight: 600; }

/* 释义列表 */
.defs { margin: 0; padding: 0; list-style: none; }
.defs li { padding: 3px 0; display: flex; gap: 8px; align-items: baseline; }
.pos {
  flex-shrink: 0;
  color: var(--accent);
  font-style: italic;
  font-size: 13px;
  min-width: 2.2em;
}

/* 例句 */
.sent { padding: 8px 0; border-bottom: 1px dashed var(--border); }
.sent:last-child { border-bottom: none; }
.sent .en { margin: 0; }
.sent .en b { color: var(--accent); }
.sent .zh { margin: 2px 0 0; color: var(--text-2); font-size: 14px; }
.sent .phone-btn { float: right; }

/* 词组 / 同近义词 */
.pair { padding: 4px 0; display: flex; flex-wrap: wrap; gap: 4px 12px; align-items: baseline; }
.pair a { color: var(--text); font-weight: 600; text-decoration: none; }
.pair a:hover { color: var(--accent); }
.pair span { color: var(--text-2); font-size: 14px; }
.wordlinks { display: flex; flex-wrap: wrap; gap: 6px; }
.wordlinks a {
  color: var(--accent);
  text-decoration: none;
  background: var(--accent-soft);
  border-radius: 4px;
  padding: 0 8px;
  font-size: 14px;
}

/* 折叠区块 */
details.card { padding: 0; }
details.card summary {
  cursor: pointer;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
details.card summary::-webkit-details-marker { display: none; }
details.card summary::after { content: "＋"; color: var(--text-2); font-weight: 400; }
details[open].card summary::after { content: "－"; }
details.card .body { padding: 0 16px 14px; }

/* 柯林斯 */
.col-entry { padding: 8px 0; border-bottom: 1px dashed var(--border); }
.col-entry:last-child { border-bottom: none; }
.col-entry .tran { margin: 0; }
.col-entry .tran b { color: var(--accent); }
.col-entry .exam { margin: 4px 0 0 1em; font-size: 14px; color: var(--text-2); }
.col-entry .exam .eng { color: var(--text); }

.err { color: var(--accent); text-align: center; margin-top: 40px; }
.loading { text-align: center; color: var(--text-2); margin-top: 40px; }

.src-note { color: var(--text-2); font-size: 12px; text-align: center; margin-top: 20px; }