/* 圈子搜索官网 · 简约商务样式 */
:root {
  --pri: #1c6ef3;
  --pri-d: #0f52c4;
  --pri-l: #e8f1ff;
  --ink: #1f2430;
  --ink-2: #3a4152;
  --muted: #5b6478;
  --line: #e6e9f0;
  --bg: #f6f8fb;
  --card: #fff;
  --r: 12px;
  --sh: 0 1px 2px rgba(31, 36, 48, .04), 0 8px 24px rgba(31, 36, 48, .05);
  --sh-h: 0 2px 6px rgba(31, 36, 48, .06), 0 14px 32px rgba(31, 36, 48, .09);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Segoe UI", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--pri); text-decoration: none; }
a:hover { color: var(--pri-d); }
h1, h2, h3 { margin: 0; line-height: 1.35; font-weight: 600; letter-spacing: .01em; }
h1 { font-size: 32px; }
h2 { font-size: 22px; }
h3 { font-size: 17px; }
p { margin: 0; }
ul, ol, dl, dd { margin: 0; padding: 0; list-style: none; }

.wrap { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 42px; padding: 0 20px; border-radius: 8px; border: 1px solid transparent;
  font-size: 15px; font-weight: 500; cursor: pointer; white-space: nowrap;
  transition: .18s;
}
.btn-pri { background: var(--pri); color: #fff; }
.btn-pri:hover { background: var(--pri-d); color: #fff; }
.btn-line { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-line:hover { border-color: var(--pri); color: var(--pri); }
.btn-lg { height: 48px; padding: 0 28px; font-size: 16px; }
.btn-full { width: 100%; margin-top: 14px; }

/* ---------- header ---------- */
.hd {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(180%) blur(12px);
}
.hd-in { display: flex; align-items: center; gap: 28px; height: 68px; }
.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); flex: 0 0 auto; }
.logo:hover { color: var(--ink); }
.logo-mk { width: 32px; height: 32px; flex: 0 0 32px; border-radius: 9px; display: block; object-fit: cover; }
.logo-tx { font-size: 19px; font-weight: 600; letter-spacing: .02em; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  padding: 8px 14px; border-radius: 8px; color: var(--ink-2); font-size: 15px;
}
.nav a:hover { background: #f2f5fa; color: var(--ink); }
.nav a.on { color: var(--pri); background: var(--pri-l); font-weight: 500; }
.hd-act { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.hd-search { display: flex; align-items: center; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: #fff; }
.hd-search input {
  width: 190px; height: 38px; padding: 0 12px; border: 0; outline: 0; font-size: 14px; color: var(--ink);
  background: transparent;
}
.hd-search button {
  height: 38px; padding: 0 14px; border: 0; background: #f2f5fa; color: var(--muted);
  font-size: 14px; cursor: pointer;
}
.hd-search button:hover { color: var(--pri); }
.menu-btn {
  display: none; width: 40px; height: 40px; border: 1px solid var(--line); border-radius: 8px;
  background: #fff; color: var(--ink); font-size: 18px; cursor: pointer;
}

/* ---------- hero ---------- */
.hero {
  /* 背景图 + 半透明白色蒙版：保证深色标题在图上依然清晰 */
  background:
    linear-gradient(180deg, rgba(251, 252, 255, .52) 0%, rgba(251, 252, 255, .34) 46%, rgba(251, 252, 255, .74) 100%),
    url("/assets/hero-bg.jpg") center bottom / cover no-repeat,
    #fbfcff;
  border-bottom: 1px solid var(--line);
}
.hero-in { padding: 72px 24px 64px; text-align: center; }
.eyebrow {
  display: inline-block; margin-bottom: 16px; padding: 4px 12px; border-radius: 999px;
  background: var(--pri-l); color: var(--pri); font-size: 13px; letter-spacing: .08em;
}
.hero h1 { font-size: 44px; letter-spacing: .01em; }
.lead { margin-top: 16px; color: var(--muted); font-size: 17px; line-height: 1.8; }
.hero-search {
  display: flex; gap: 10px; max-width: 620px; margin: 32px auto 0;
}
.hero-search input {
  flex: 1; min-width: 0; height: 52px; padding: 0 18px; border: 1px solid var(--line);
  border-radius: 10px; background: #fff; font-size: 15px; outline: 0;
  box-shadow: var(--sh);
}
.hero-search input:focus { border-color: var(--pri); }
.hero-search .btn { height: 52px; border-radius: 10px; padding: 0 26px; }
.hero-tags { margin-top: 18px; color: var(--muted); font-size: 14px; }
.hero-tags a { margin: 0 8px; color: var(--ink-2); }
.hero-tags a:hover { color: var(--pri); }

/* ---------- 城市 / 行业快捷入口 ---------- */
.quick {
  display: grid; grid-template-columns: 1fr 1fr; gap: 28px 34px;
  margin: 36px auto 0; padding: 26px 28px;
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--r); box-shadow: var(--sh);
}
.quick-hd { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.quick-hd h2 { font-size: 18px; }
.quick-col .chips { gap: 8px; }
.quick-col .chip-link { padding: 6px 12px; font-size: 13px; }

/* ---------- sections ---------- */
.sec { padding: 56px 0 0; }
.sec-hd { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 22px; }
.sec-hd h2 { font-size: 24px; }
.sec-hd p { margin-top: 6px; color: var(--muted); font-size: 14px; }
.more { color: var(--pri); font-size: 14px; white-space: nowrap; }
.more-line { margin-top: 20px; text-align: center; }

/* ---------- grids ---------- */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-ind { grid-template-columns: repeat(4, 1fr); gap: 14px; }
.grid-city { grid-template-columns: repeat(6, 1fr); gap: 12px; }
/* 栅格子项默认 min-width:auto，标题不换行时会把整列顶宽，手机上出现横向滚动 */
.grid > *, .grid-3 > *, .grid-4 > *, .grid-ind > *, .grid-city > * { min-width: 0; }

/* ---------- circle card ---------- */
.cc {
  min-width: 0;
  background: #fff; border: 1px solid var(--line); border-radius: var(--r);
  padding: 20px; display: flex; flex-direction: column;
  transition: .18s;
}
.cc:hover { border-color: #d3ddf0; box-shadow: var(--sh-h); transform: translateY(-1px); }
.cc-hd { display: flex; align-items: center; gap: 12px; color: var(--ink); min-width: 0; }
.cc-hd:hover { color: var(--pri); }
.cc-hd h3 { flex: 1 1 auto; min-width: 0; font-size: 17px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.av {
  flex: 0 0 auto; width: 56px; height: 56px; border-radius: 12px; object-fit: cover;
  background: var(--pri-l); border: 1px solid #e2ebfb;
}
.av-lg { width: 72px; height: 72px; border-radius: 16px; font-size: 26px; }
.av-tx {
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--pri); font-size: 22px; font-weight: 600;
}
.cc-meta { margin-top: 12px; color: var(--muted); font-size: 13px; }
.cc-desc {
  margin-top: 8px; color: var(--ink-2); font-size: 14px; line-height: 1.75;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
  min-height: 66px;
}
.cc-ft {
  margin-top: 14px; padding-top: 12px; border-top: 1px dashed var(--line);
  display: flex; align-items: center; justify-content: space-between;
  color: var(--muted); font-size: 13px;
}
.tag {
  display: inline-block; padding: 2px 8px; border-radius: 6px;
  background: #fff6e6; color: #b26a00; font-size: 12px;
}

/* ---------- chips / cities / industries ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chips-center { justify-content: center; margin-top: 22px; }
.chip-link {
  display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px;
  border: 1px solid var(--line); border-radius: 999px; background: #fff;
  color: var(--ink-2); font-size: 14px;
}
.chip-link:hover { border-color: var(--pri); color: var(--pri); }
.chip-link em { font-style: normal; color: var(--muted); font-size: 12px; }
.city-card {
  display: flex; flex-direction: column; gap: 4px; padding: 16px;
  border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink);
}
.city-card:hover { border-color: var(--pri); box-shadow: var(--sh); color: var(--pri); }
.city-name { font-size: 15px; font-weight: 500; }
.city-n { color: var(--muted); font-size: 12px; }
.ind-card {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 18px; border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink);
}
.ind-card:hover { border-color: var(--pri); box-shadow: var(--sh); color: var(--pri); }
.ind-name { font-size: 16px; font-weight: 500; }
.ind-n { color: var(--muted); font-size: 12px; white-space: nowrap; }
.feat {
  padding: 24px; border: 1px solid var(--line); border-radius: var(--r); background: #fff;
}
.feat h3 { margin-bottom: 8px; }
.feat p { color: var(--muted); font-size: 14px; }
.feat-link { display: block; color: var(--ink); }
.feat-link:hover { border-color: var(--pri); box-shadow: var(--sh); color: var(--ink); }

/* ---------- faq ---------- */
.faq { border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; background: #fff; }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:last-child { border-bottom: 0; }
.faq summary {
  padding: 18px 22px; cursor: pointer; font-size: 15px; font-weight: 500; list-style: none;
  position: relative; padding-right: 48px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:after {
  content: "+"; position: absolute; right: 22px; top: 16px; color: var(--muted); font-size: 18px;
}
.faq details[open] summary:after { content: "−"; color: var(--pri); }
.faq p { padding: 0 22px 20px; color: var(--muted); font-size: 14px; }

/* ---------- cta ---------- */
.cta {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 34px 36px; border-radius: var(--r);
  background: linear-gradient(100deg, #eaf2ff 0%, #f7faff 100%);
  border: 1px solid #dbe8ff;
}
.cta h2 { font-size: 22px; }
.cta p { margin-top: 6px; color: var(--muted); font-size: 14px; }

/* ---------- breadcrumb / page head ---------- */
.bc { padding: 22px 0 0; font-size: 13px; color: var(--muted); }
.bc ol { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.bc li + li:before { content: "/"; margin-right: 6px; color: #c3cad7; }
.bc a { color: var(--muted); }
.bc a:hover { color: var(--pri); }
.page-hd { padding: 18px 0 26px; border-bottom: 1px solid var(--line); margin-bottom: 26px; }
.page-hd h1 { font-size: 30px; }
.page-hd p { margin-top: 8px; color: var(--muted); font-size: 15px; }
.page-hd p b { color: var(--pri); }

/* ---------- filter bar ---------- */
.fbar {
  display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px;
  padding: 16px; background: var(--bg); border: 1px solid var(--line); border-radius: var(--r);
}
.fbar input, .fbar select {
  height: 42px; padding: 0 12px; border: 1px solid var(--line); border-radius: 8px;
  background: #fff; font-size: 14px; color: var(--ink); outline: 0;
}
.fbar input { flex: 1 1 220px; min-width: 0; }
.fbar select { flex: 0 0 180px; }
.fbar input:focus, .fbar select:focus { border-color: var(--pri); }
.fbar .btn { height: 42px; }

/* ---------- pager ---------- */
.pg { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; justify-content: center; padding: 40px 0 8px; }
.pg a, .pg span {
  min-width: 38px; height: 38px; padding: 0 12px; border: 1px solid var(--line); border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center; font-size: 14px; color: var(--ink-2);
  background: #fff;
}
.pg a:hover { border-color: var(--pri); color: var(--pri); }
.pg a.on { background: var(--pri); border-color: var(--pri); color: #fff; }
.pg .pg-i { border: 0; color: var(--muted); }
.pg .pg-b { padding: 0 16px; }

/* ---------- circle detail ---------- */
.cd { padding: 8px 0 0; }
.cd-hd {
  display: flex; align-items: center; gap: 20px; padding: 26px;
  border: 1px solid var(--line); border-radius: var(--r); background: #fff; box-shadow: var(--sh);
}
.cd-hd-tx { flex: 1; min-width: 0; }
.cd-hd-tx h1 { font-size: 28px; }
.cd-meta { margin-top: 8px; color: var(--muted); font-size: 14px; }
.cd-sub { margin-top: 6px; color: var(--muted); font-size: 14px; display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.cd-act { flex: 0 0 auto; }
.cd-body { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 24px; margin-top: 24px; }
.blk { padding: 0 0 8px; margin-bottom: 28px; }
.blk h2 { font-size: 19px; margin-bottom: 12px; padding-left: 12px; border-left: 3px solid var(--pri); }
.blk-sub { margin: -4px 0 14px; color: var(--muted); font-size: 13px; }
.blk-box { padding: 22px; border: 1px solid var(--line); border-radius: var(--r); background: #fff; }
.blk-box h2 { font-size: 17px; }
.kv { display: grid; grid-template-columns: 84px minmax(0, 1fr); gap: 10px 12px; font-size: 14px; }
.kv dt { color: var(--muted); }
.kv dd { color: var(--ink); }
.kv-about { max-width: 640px; grid-template-columns: 100px minmax(0, 1fr); }
.tip { margin-top: 12px; color: var(--muted); font-size: 12px; line-height: 1.7; }
.prose { color: var(--ink-2); font-size: 15px; line-height: 1.9; word-break: break-word; }
.prose p + p { margin-top: 10px; }
.law h2 { font-size: 16px; margin: 22px 0 8px; padding: 0; border: 0; }
.law p { margin-top: 6px; font-size: 14px; line-height: 1.9; color: var(--ink-2); }
.paper { padding: 8px 0 40px; max-width: 860px; }
.paper h1 { font-size: 28px; }
.paper-sub { margin-top: 8px; color: var(--muted); font-size: 13px; }
.paper .prose { margin-top: 14px; }

/* ---------- supply list ---------- */
.sup { display: grid; gap: 12px; }
.sup li {
  display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 4px 12px;
  padding: 16px 18px; border: 1px solid var(--line); border-radius: 10px; background: #fff;
}
.sup li p { color: var(--ink-2); font-size: 14px; line-height: 1.75; grid-column: 2; }
.chip {
  align-self: start; padding: 2px 8px; border-radius: 6px; font-size: 12px; white-space: nowrap;
}
.chip-supply { background: #e8f7ee; color: #17803d; }
.chip-demand { background: #fff1e8; color: #b24a00; }
.sup-meta {
  grid-column: 2; display: flex; gap: 14px; color: var(--muted); font-size: 12px; margin-top: 2px;
}

/* ---------- 404 ---------- */
.nf { text-align: center; padding: 60px 0 80px; border: 0; }
.nf-code { font-size: 72px; font-weight: 600; color: #dbe4f3; line-height: 1; letter-spacing: .06em; }
.nf h1 { margin-top: 14px; font-size: 26px; }
.nf > p { margin-top: 8px; color: var(--muted); }
.nf-act { display: flex; gap: 12px; justify-content: center; margin-top: 24px; }

/* ---------- empty ---------- */
.empty {
  padding: 40px 20px; text-align: center; color: var(--muted); font-size: 14px;
  border: 1px dashed var(--line); border-radius: var(--r); background: #fbfcfe;
}

/* ---------- footer ---------- */
.ft { margin-top: 72px; border-top: 1px solid var(--line); background: #fafbfd; }
.ft-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; padding: 46px 0 34px; }
.ft-brand p { margin: 14px 0 18px; color: var(--muted); font-size: 14px; line-height: 1.8; max-width: 320px; }
.ft-col h3 { font-size: 15px; margin-bottom: 12px; color: var(--ink); }
.ft-col a { display: block; padding: 4px 0; color: var(--muted); font-size: 14px; }
.ft-col a:hover { color: var(--pri); }
.ft-bot {
  display: flex; flex-wrap: wrap; gap: 8px 20px; padding: 18px 0 26px;
  border-top: 1px solid var(--line); color: var(--muted); font-size: 13px;
}
.ft-bot a { color: var(--muted); }
.ft-bot a:hover { color: var(--pri); }

/* ---------- responsive ---------- */
@media (max-width: 1199px) {
  .grid, .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-ind { grid-template-columns: repeat(3, 1fr); }
  .grid-city { grid-template-columns: repeat(4, 1fr); }
  .hd-search { display: none; }
  .cd-body { grid-template-columns: minmax(0, 1fr) 300px; }
  .hero h1 { font-size: 38px; }
}
@media (max-width: 900px) {
  .nav { display: none; }
  .nav.open {
    display: flex; position: absolute; left: 0; right: 0; top: 68px;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 8px 16px 14px;
    box-shadow: var(--sh);
  }
  .nav.open a { padding: 12px 8px; border-radius: 8px; }
  .menu-btn { display: inline-flex; align-items: center; justify-content: center; }
  .ft-top { grid-template-columns: 1fr 1fr; }
  .cd-body { grid-template-columns: 1fr; }
  .quick { grid-template-columns: 1fr; gap: 22px; padding: 22px 20px; }
}
@media (max-width: 767px) {
  .wrap { padding: 0 16px; }
  /* 手机上背景图裁得更窄，蒙版加重、聚焦到城市天际线，避免文字压在密集建筑上 */
  .hero {
    background:
      linear-gradient(180deg, rgba(251, 252, 255, .66) 0%, rgba(251, 252, 255, .5) 42%, rgba(251, 252, 255, .82) 100%),
      url("/assets/hero-bg.jpg") center bottom / cover no-repeat,
      #fbfcff;
  }
  .hero-in { padding: 48px 16px 44px; }
  .hero h1 { font-size: 30px; }
  .lead { font-size: 15px; }
  .hero-search { flex-direction: column; }
  .hero-search .btn { width: 100%; }
  .grid, .grid-3, .grid-4, .grid-ind { grid-template-columns: 1fr; }
  .grid-city { grid-template-columns: repeat(2, 1fr); }
  .sec { padding-top: 44px; }
  .sec-hd { flex-direction: column; align-items: flex-start; gap: 6px; }
  .page-hd h1 { font-size: 24px; }
  .cd-hd { flex-wrap: wrap; padding: 20px; }
  .cd-act { width: 100%; }
  .cd-act .btn { width: 100%; }
  .fbar select { flex: 1 1 100%; }
  .cta { flex-direction: column; align-items: flex-start; padding: 26px 22px; }
  .cta .btn { width: 100%; }
  .ft-top { grid-template-columns: 1fr; gap: 24px; padding: 34px 0 24px; }
  .pg a, .pg span { min-width: 34px; height: 34px; padding: 0 8px; font-size: 13px; }
  .nf-code { font-size: 56px; }
}