/* ===========================================================================
   www.lovesouk.cn 企业名片搜索站 —— 样式
   设计基线：移动端优先（<768px 单列 / 大点击区），≥768px 启用多列与侧栏；
   纯 CSS 无框架，避免匿名访客下载巨型 bundle（利于首屏与 SEO）。
   =========================================================================== */
:root {
  --brand: #2456f6;
  --brand-d: #1a45d8;
  --brand-l: #eaf0ff;
  --ink: #16181d;
  --ink-2: #4b5261;
  --ink-3: #828a93;
  --line: #e8eaee;
  --bg: #f6f7f9;
  --card: #ffffff;
  --gold: #b8862b;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(20, 26, 40, .04), 0 8px 24px rgba(20, 26, 40, .06);
  --hd-h: 56px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; border: 0; }
h1, h2, h3 { margin: 0; font-weight: 600; line-height: 1.35; }
p { margin: 0; }
ul, ol, dl, dd { margin: 0; padding: 0; list-style: none; }
button { font: inherit; cursor: pointer; }

/* ---------------- Header ---------------- */
.hd {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.hd-in {
  max-width: 1200px; margin: 0 auto; padding: 0 14px; height: var(--hd-h);
  display: flex; align-items: center; gap: 12px;
}
.logo { display: flex; align-items: center; gap: 8px; flex: none; }
.logo-mark {
  width: 28px; height: 28px; border-radius: 8px; background: var(--brand); color: #fff;
  display: grid; place-items: center; font-size: 13px; font-weight: 700; letter-spacing: .5px;
}
.logo-txt { font-size: 17px; font-weight: 700; letter-spacing: .5px; }

.hd-search { flex: 1 1 auto; display: flex; min-width: 0; }
.hd-input {
  flex: 1; min-width: 0; height: 34px; padding: 0 12px;
  border: 1px solid var(--line); border-right: 0;
  border-radius: 8px 0 0 8px; background: #fff; font-size: 14px; color: var(--ink);
  outline: none; -webkit-appearance: none;
}
.hd-input:focus { border-color: var(--brand); }
.hd-btn {
  flex: none; height: 34px; padding: 0 16px; border: 0; border-radius: 0 8px 8px 0;
  background: var(--brand); color: #fff; font-size: 14px;
}
.hd-btn:hover { background: var(--brand-d); }

.hd-nav { display: flex; align-items: center; gap: 14px; flex: none; font-size: 14px; color: var(--ink-2); }
.hd-nav a:hover { color: var(--brand); }
.hd-login { color: var(--brand); font-weight: 600; }
.hd-me { display: flex; align-items: center; gap: 6px; }
.hd-avatar { width: 24px; height: 24px; border-radius: 50%; object-fit: cover; background: var(--line); }
.hd-avatar--ph { background: var(--brand-l); }
.hd-link { border: 0; background: none; color: var(--ink-3); padding: 0; font-size: 14px; }

/* ---------------- Main ---------------- */
.mn { max-width: 1200px; margin: 0 auto; padding: 16px 14px 48px; }

/* ---------------- Hero ---------------- */
.hero {
  background: linear-gradient(135deg, #2456f6 0%, #3f7bff 100%);
  border-radius: var(--radius); padding: 28px 18px; color: #fff; margin-bottom: 22px;
}
.hero-t { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.hero-s { opacity: .9; font-size: 14px; margin-bottom: 16px; }
.hero-form { display: flex; gap: 8px; }
.hero-input {
  flex: 1; min-width: 0; height: 42px; padding: 0 14px; border: 0;
  border-radius: 8px; font-size: 15px; outline: none; color: var(--ink);
}
.hero-btn {
  flex: none; height: 42px; padding: 0 22px; border: 0; border-radius: 8px;
  background: #fff; color: var(--brand); font-size: 15px; font-weight: 600;
}
.hero-tips { margin-top: 12px; font-size: 13px; opacity: .92; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.hero-tip { padding: 3px 10px; border-radius: 999px; background: rgba(255, 255, 255, .18); }
.hero-tip:hover { background: rgba(255, 255, 255, .3); }

/* ---------------- Block ---------------- */
.blk { margin-bottom: 26px; }
.blk-hd { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 12px; }
.blk-t { font-size: 17px; font-weight: 600; }
.blk-more { font-size: 13px; color: var(--brand); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips--sm { margin-bottom: 12px; }
.chip {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 6px 12px; border-radius: 999px; background: #fff;
  border: 1px solid var(--line); font-size: 13px; color: var(--ink-2);
}
.chip:hover { border-color: var(--brand); color: var(--brand); }
.chip--on { background: var(--brand); border-color: var(--brand); color: #fff; }
.chip--more { color: var(--brand); }
.chip i { font-style: normal; font-size: 11px; color: var(--ink-3); }

/* ---------------- Card grid ---------------- */
.grid { display: grid; gap: 12px; grid-template-columns: 1fr; }
.grid--p { grid-template-columns: repeat(2, 1fr); }

.cc {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column; transition: box-shadow .15s, transform .15s;
}
.cc:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.cc-a { display: flex; gap: 12px; padding: 12px; flex: 1; min-width: 0; }
.cc-cover {
  flex: none; width: 92px; height: 92px; border-radius: 10px; overflow: hidden; background: var(--bg);
}
.cc-cover img { width: 100%; height: 100%; object-fit: cover; }
.cc-cover--ph {
  display: grid; place-items: center; background: var(--brand-l); color: var(--brand);
  font-size: 30px; font-weight: 700;
}
.cc-b { min-width: 0; flex: 1; }
.cc-name { font-size: 15px; font-weight: 600; display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.cc-rank {
  flex: none; width: 20px; height: 20px; border-radius: 6px; background: var(--gold); color: #fff;
  font-size: 12px; display: grid; place-items: center; font-weight: 700;
}
.cc-meta { margin: 4px 0 2px; font-size: 12px; color: var(--ink-3); }
.cc-region--na { opacity: .6; }
.cc-desc { font-size: 13px; color: var(--ink-2); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.cc-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.tag {
  font-size: 11px; padding: 2px 8px; border-radius: 6px; background: var(--bg); color: var(--ink-2);
  font-style: normal; white-space: nowrap;
}
.tag--vip { background: linear-gradient(135deg, #f5d68a, #d9a441); color: #4a3208; font-weight: 600; }
.cc-actions { padding: 0 12px 12px; }

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 38px; padding: 0 16px; border-radius: 8px; border: 1px solid var(--line);
  background: #fff; color: var(--ink); font-size: 14px;
}
.btn:hover { border-color: var(--brand); color: var(--brand); }
.btn--primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn--primary:hover { background: var(--brand-d); border-color: var(--brand-d); color: #fff; }
.btn--ghost { background: transparent; }
.btn--sm { height: 32px; padding: 0 12px; font-size: 13px; }
.btn--lg { height: 44px; font-size: 15px; }
.btn--block { width: 100%; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }

/* ---------------- Search result ---------------- */
.res-hd { margin-bottom: 12px; }
.res-t { font-size: 19px; }
.res-c { font-size: 13px; color: var(--ink-3); margin-top: 4px; }
.res-c b { color: var(--brand); }

.flt { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 12px; margin-bottom: 14px; }
.flt-row { display: flex; gap: 10px; padding: 6px 0; }
.flt-row + .flt-row { border-top: 1px dashed var(--line); }
.flt-k { flex: none; width: 40px; font-size: 13px; color: var(--ink-3); padding-top: 5px; }
.flt-v { display: flex; flex-wrap: wrap; gap: 6px; max-height: 76px; overflow: hidden; }
.flt-v--open { max-height: none; }

/* ---------------- Pagination ---------------- */
.pg { display: flex; align-items: center; justify-content: center; gap: 8px; margin: 22px 0 8px; flex-wrap: wrap; }
.pg-list { display: flex; gap: 6px; align-items: center; }
.pg-list a, .pg-cur, .pg-nav {
  display: inline-grid; place-items: center; min-width: 34px; height: 34px; padding: 0 10px;
  border-radius: 8px; border: 1px solid var(--line); background: #fff; font-size: 14px; color: var(--ink-2);
}
.pg-cur { background: var(--brand); border-color: var(--brand); color: #fff; font-weight: 600; }
.pg-gap { color: var(--ink-3); padding: 0 2px; }
.pg-nav--off { opacity: .45; }

/* ---------------- Detail ---------------- */
.crumb { font-size: 13px; color: var(--ink-3); display: flex; gap: 6px; margin-bottom: 12px; flex-wrap: wrap; }
.crumb a:hover { color: var(--brand); }
.crumb-cur { color: var(--ink-2); }

.dt { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.dt-top { display: flex; flex-direction: column; gap: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.dt-name { font-size: 20px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.dt-kv { margin-top: 12px; display: grid; gap: 8px; }
.dt-kv div { display: flex; gap: 10px; font-size: 14px; }
.dt-kv dt { flex: none; width: 64px; color: var(--ink-3); }
.dt-kv dd { color: var(--ink); word-break: break-all; }
.dt-side { flex: none; }
.dt-tip { margin-top: 8px; font-size: 12px; color: var(--ink-3); line-height: 1.5; }

.dt-sec { padding-top: 18px; margin-top: 18px; border-top: 1px solid var(--line); }
.dt-h2 { font-size: 16px; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.dt-h2-n { font-size: 12px; font-weight: 400; color: var(--ink-3); }
.dt-txt { font-size: 14px; color: var(--ink-2); }
.dt-txt p + p { margin-top: 8px; }
.dt-more { margin-top: 14px; }

.gal { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.gal-i { display: block; border-radius: 10px; overflow: hidden; background: var(--bg); aspect-ratio: 1 / 1; }
.gal-i img { width: 100%; height: 100%; object-fit: cover; }

.pc { border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: #fff; }
.pc-cover { aspect-ratio: 1 / 1; background: var(--bg); overflow: hidden; }
.pc-cover img { width: 100%; height: 100%; object-fit: cover; }
.pc-t { font-size: 13px; padding: 8px; font-weight: 500; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------------- Empty ---------------- */
.empty { padding: 56px 16px; text-align: center; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.empty-ic { font-size: 34px; opacity: .5; }
.empty-t { margin-top: 10px; font-size: 15px; color: var(--ink-2); }
.empty-h { margin-top: 6px; font-size: 13px; color: var(--ink-3); }

/* ---------------- Login ---------------- */
.lg { display: grid; place-items: center; padding: 24px 0; }
.lg-box {
  width: 100%; max-width: 380px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px; text-align: center;
}
.lg-t { font-size: 19px; margin-bottom: 8px; }
.lg-s { font-size: 13px; color: var(--ink-2); margin-bottom: 16px; }
.lg-qr { width: 200px; height: 200px; margin: 0 auto; border: 1px solid var(--line); border-radius: 12px; display: grid; place-items: center; background: #fff; overflow: hidden; }
.lg-qr img { width: 200px; height: 200px; }
.lg-qr-ph, .lg-qr--err { font-size: 13px; color: var(--ink-3); padding: 0 12px; }
.lg-qr--err { color: #c0392b; }
.lg-st { margin-top: 12px; font-size: 13px; color: var(--brand); min-height: 20px; }
.lg-steps { margin-top: 14px; text-align: left; font-size: 13px; color: var(--ink-2); display: grid; gap: 4px; padding-left: 18px; list-style: decimal; }
.lg-note { margin-top: 14px; font-size: 12px; color: var(--ink-3); }

/* ---------------- Messages ---------------- */
.ms-hd { margin-bottom: 12px; }
.ms-t { font-size: 19px; }
.ms-wrap { display: grid; grid-template-columns: 1fr; gap: 12px; }
.ms-list, .ms-chat { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); min-height: 420px; }
.ms-ph { padding: 24px; text-align: center; color: var(--ink-3); font-size: 13px; }
.ms-item { display: flex; gap: 10px; padding: 12px; border-bottom: 1px solid var(--line); cursor: pointer; }
.ms-item:hover { background: var(--bg); }
.ms-item--on { background: var(--brand-l); }
.ms-item-av { width: 40px; height: 40px; border-radius: 50%; background: var(--brand-l); object-fit: cover; flex: none; }
.ms-item-b { min-width: 0; flex: 1; }
.ms-item-n { font-size: 14px; font-weight: 600; display: flex; justify-content: space-between; gap: 8px; }
.ms-item-m { font-size: 12px; color: var(--ink-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ms-badge { flex: none; min-width: 18px; height: 18px; padding: 0 5px; border-radius: 9px; background: #e5484d; color: #fff; font-size: 11px; display: grid; place-items: center; }
.ms-chat { display: flex; flex-direction: column; padding: 0; overflow: hidden; }
.ms-chat-hd { padding: 12px; border-bottom: 1px solid var(--line); font-size: 14px; font-weight: 600; }
.ms-chat-bd { flex: 1; padding: 12px; overflow-y: auto; display: flex; flex-direction: column; gap: 10px; }
.msg { max-width: 78%; padding: 8px 12px; border-radius: 12px; font-size: 14px; word-break: break-word; }
.msg--me { align-self: flex-end; background: var(--brand); color: #fff; border-bottom-right-radius: 4px; }
.msg--ta { align-self: flex-start; background: var(--bg); border-bottom-left-radius: 4px; }
.ms-chat-ft { border-top: 1px solid var(--line); padding: 10px; display: flex; gap: 8px; }
.ms-input { flex: 1; min-width: 0; height: 38px; padding: 0 12px; border: 1px solid var(--line); border-radius: 8px; outline: none; font-size: 14px; }
.ms-input:focus { border-color: var(--brand); }

/* ---------------- Dialog ---------------- */
.dlg { position: fixed; inset: 0; z-index: 60; display: grid; place-items: center; }
.dlg[hidden] { display: none; }
.dlg-mask { position: absolute; inset: 0; background: rgba(10, 14, 24, .45); }
.dlg-box {
  position: relative; width: min(420px, calc(100vw - 32px)); background: #fff;
  border-radius: var(--radius); box-shadow: 0 20px 60px rgba(10, 14, 24, .25); overflow: hidden;
}
.dlg-hd { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px; border-bottom: 1px solid var(--line); }
.dlg-hd h3 { font-size: 16px; }
.dlg-x { border: 0; background: none; color: var(--ink-3); font-size: 16px; padding: 4px; }
.dlg-bd { padding: 16px; }
.dlg-tip { font-size: 12px; color: var(--ink-3); margin-top: 8px; }
.dlg-ta { width: 100%; min-height: 96px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; outline: none; resize: vertical; }
.dlg-ta:focus { border-color: var(--brand); }

/* ---------------- Toast ---------------- */
.toast {
  position: fixed; left: 50%; bottom: 32px; transform: translate(-50%, 12px);
  background: rgba(22, 24, 29, .92); color: #fff; font-size: 14px;
  padding: 10px 18px; border-radius: 8px; opacity: 0; pointer-events: none;
  transition: opacity .2s, transform .2s; z-index: 80; max-width: 80vw; text-align: center;
}
.toast--on { opacity: 1; transform: translate(-50%, 0); }

/* ---------------- Footer ---------------- */
.ft { border-top: 1px solid var(--line); background: #fff; margin-top: 32px; }
.ft-in { max-width: 1200px; margin: 0 auto; padding: 20px 14px; display: flex; flex-direction: column; gap: 12px; }
.ft-brand { display: flex; gap: 10px; align-items: flex-start; }
.ft-name { font-size: 14px; font-weight: 600; }
.ft-sub { font-size: 12px; color: var(--ink-3); margin-top: 4px; }
.ft-links { display: flex; gap: 16px; font-size: 13px; color: var(--ink-2); }

/* ---------------- About ---------------- */
.ab { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.ab-t { font-size: 19px; margin-bottom: 12px; }
.ab h2 { font-size: 15px; margin: 18px 0 6px; }
.ab p { font-size: 14px; color: var(--ink-2); }

/* ===========================================================================
   PC（≥768px）：多列网格、详情双栏、消息左右分栏
   =========================================================================== */
@media (min-width: 768px) {
  :root { --hd-h: 62px; }
  .mn { padding: 22px 20px 60px; }
  .hero { padding: 44px 40px; }
  .hero-t { font-size: 30px; }
  .hero-s { font-size: 15px; }
  .hero-form { max-width: 620px; }
  .hero-input, .hero-btn { height: 48px; font-size: 16px; }

  .grid { grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .grid--p { grid-template-columns: repeat(4, 1fr); }
  .cc-cover { width: 104px; height: 104px; }

  .dt { padding: 24px; }
  .dt-top { flex-direction: row; align-items: flex-start; justify-content: space-between; gap: 28px; }
  .dt-main { flex: 1; min-width: 0; }
  .dt-side { width: 240px; }
  .dt-kv { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 24px; }
  .dt-name { font-size: 24px; }
  .gal { grid-template-columns: repeat(5, 1fr); }

  .ms-wrap { grid-template-columns: 280px 1fr; }
  .ms-list { max-height: 560px; overflow-y: auto; }

  .ft-in { flex-direction: row; align-items: center; justify-content: space-between; padding: 24px 20px; }
}

@media (min-width: 1100px) {
  .grid { grid-template-columns: repeat(4, 1fr); }
}

/* 无障碍：尊重系统减少动效设置 */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}