:root {
  --bg: #f5f7fa;
  --card: #ffffff;
  --primary: #2b6cff;
  --primary-d: #1f54d6;
  --text: #2b2f38;
  --muted: #8a93a6;
  --border: #e8ebf2;
  --link: #3a4256;
  --link-hover: #2b6cff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", "Hiragino Sans GB", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}

a { text-decoration: none; color: inherit; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 18px; }

/* 顶栏 + 搜索 */
.topbar {
  background: linear-gradient(135deg, #2b6cff 0%, #5b8cff 100%);
  color: #fff;
  padding: 26px 0 30px;
  box-shadow: 0 2px 12px rgba(43, 108, 255, 0.18);
}
.top-inner { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.logo { font-size: 26px; font-weight: 700; color: #fff; letter-spacing: 1px; }

.search { width: 100%; max-width: 640px; }
.engines { display: flex; gap: 6px; justify-content: space-between; margin-bottom: 10px; flex-wrap: wrap; }
.engine {
  border: none; cursor: pointer; padding: 5px 14px; border-radius: 16px;
  background: rgba(255, 255, 255, 0.18); color: #fff; font-size: 14px; transition: .15s;
}
.engine:hover { background: rgba(255, 255, 255, 0.32); }
.engine.active { background: #fff; color: var(--primary); font-weight: 600; }

.search-row { display: flex; background: #fff; border-radius: 24px; padding: 5px; box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12); }
.search-row input {
  flex: 1; border: none; outline: none; font-size: 16px; padding: 10px 18px; border-radius: 20px; color: var(--text);
}
.search-row .go {
  border: none; cursor: pointer; padding: 0 26px; border-radius: 20px;
  background: var(--primary); color: #fff; font-size: 16px; font-weight: 600; transition: .15s;
}
.search-row .go:hover { background: var(--primary-d); }

/* 热门 */
.sec-title { font-size: 17px; margin: 26px 0 12px; color: var(--text); }
.hot-list { display: flex; flex-wrap: wrap; gap: 10px; }
.hot-item {
  display: inline-flex; align-items: center; gap: 7px; background: var(--card);
  border: 1px solid var(--border); border-radius: 22px; padding: 7px 14px; font-size: 14px; color: var(--link);
  transition: .15s;
}
.hot-item:hover { border-color: var(--primary); color: var(--link-hover); transform: translateY(-1px); }
.hot-item img { width: 18px; height: 18px; border-radius: 4px; }

/* 分类卡片墙 */
.grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px; margin: 22px 0 10px;
}
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 14px 16px 16px; box-shadow: 0 1px 3px rgba(20, 30, 60, 0.04);
}
.card-title { margin: 0 0 10px; font-size: 15px; color: var(--text); border-left: 3px solid var(--primary); padding-left: 9px; }
.links { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 4px 10px; }
.links li a {
  display: flex; align-items: center; gap: 6px; padding: 5px 6px; border-radius: 6px;
  font-size: 13.5px; color: var(--link); transition: .12s; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.links li a:hover { background: #eef3ff; color: var(--link-hover); }
.links li a img { width: 16px; height: 16px; border-radius: 3px; flex: 0 0 auto; }
.links li a span { overflow: hidden; text-overflow: ellipsis; }

/* 页脚 */
.footer { margin-top: 34px; padding: 22px 0; color: var(--muted); font-size: 13px; text-align: center; border-top: 1px solid var(--border); }
.footer a { color: var(--primary); }

@media (max-width: 600px) {
  .links { grid-template-columns: 1fr; }
  .logo { font-size: 22px; }
}

/* 本机信息探测页 */
.ci-page { margin: 8px 0 10px; }
.ci-sub { color: var(--muted); font-size: 13.5px; margin: 4px 0 18px; line-height: 1.6; }
.ci-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.ci-card {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px 18px 18px; box-shadow: 0 1px 3px rgba(20, 30, 60, 0.04);
}
.ci-card-title { margin: 0 0 12px; font-size: 15px; color: var(--text); border-left: 3px solid var(--primary); padding-left: 9px; }
.ci-list { list-style: none; margin: 0; padding: 0; }
.ci-list li { display: flex; justify-content: space-between; gap: 12px; padding: 8px 4px; border-bottom: 1px dashed var(--border); font-size: 13.5px; }
.ci-list li:last-child { border-bottom: none; }
.ci-k { color: var(--muted); flex: 0 0 auto; }
.ci-v { color: var(--link); font-weight: 600; text-align: right; word-break: break-all; }
.ci-v.ci-warn { color: #e08a00; font-weight: 500; }
.ci-tip { margin: 12px 0 0; font-size: 12.5px; color: var(--muted); line-height: 1.6; background: #f7f9ff; border: 1px solid var(--border); border-radius: 8px; padding: 8px 11px; }
.ci-ua { margin: 16px 0 0; font-size: 13px; }
.ci-ua summary { cursor: pointer; color: var(--primary); }
.ci-ua code { display: block; margin-top: 8px; background: #1e2330; color: #e6e9f0; padding: 10px 12px; border-radius: 8px; word-break: break-all; font-size: 12px; }

@media (max-width: 720px) {
  .ci-grid { grid-template-columns: 1fr; }
}

/* 顶部用户菜单 */
.top-row { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.userbar { display: flex; align-items: center; gap: 14px; font-size: 14px; }
.userbar a { color: #fff; opacity: .92; }
.userbar a:hover { opacity: 1; text-decoration: underline; }
.userbar .uname { color: #fff; opacity: .8; }

/* 登录 / 注册 */
.auth-page { padding: 40px 0; }
.auth-card { max-width: 380px; margin: 0 auto; background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 26px 28px; box-shadow: 0 4px 16px rgba(20, 30, 60, .06); }
.auth-title { margin: 0 0 18px; font-size: 20px; }
.auth-error { background: #fff0f0; color: #d33; padding: 8px 12px; border-radius: 8px; font-size: 13px; margin: 0 0 14px; }
.auth-form label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.auth-form input { width: 100%; margin-top: 5px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 15px; }
.auth-btn { width: 100%; border: none; cursor: pointer; padding: 11px; border-radius: 9px; background: var(--primary); color: #fff; font-size: 15px; font-weight: 600; margin-top: 6px; }
.auth-btn:hover { background: var(--primary-d); }
.auth-foot { text-align: center; margin: 16px 0 0; font-size: 13px; color: var(--muted); }
.auth-foot a { color: var(--primary); }

/* 用户自定义主页 */
.user-home { padding: 10px 0 20px; }
.uh-head { margin: 8px 0 14px; }
.uh-title { margin: 0 0 4px; font-size: 20px; }
.uh-sub { color: var(--muted); font-size: 13px; margin: 0 0 10px; }
.uh-sub code { background: #eef3ff; padding: 2px 8px; border-radius: 6px; color: var(--primary); font-size: 12px; }
.uh-tools { display: flex; gap: 10px; }
.mini-btn { border: 1px solid var(--primary); background: #fff; color: var(--primary); padding: 7px 14px; border-radius: 18px; cursor: pointer; font-size: 13px; }
.mini-btn:hover { background: var(--primary); color: #fff; }
.uh-panel { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; margin: 12px 0; }
.uh-panel form { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.uh-panel input { padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; }
.uh-panel button { border: none; background: var(--primary); color: #fff; padding: 8px 16px; border-radius: 8px; cursor: pointer; }
.uh-tip { color: var(--muted); font-size: 12px; margin: 8px 0 0; line-height: 1.5; }
.uh-empty { color: var(--muted); margin: 20px 0; font-size: 14px; }
.links li { position: relative; }
.links li .del { position: absolute; right: 6px; top: 50%; transform: translateY(-50%); color: #bbb; font-size: 11px; opacity: 0; }
.links li:hover .del { opacity: 1; }
.links li .del:hover { color: #d33; }