/* ===== 外卖UE小龙虾 官网共享样式（科技蓝主题）===== */
:root {
  --blue: #1f6feb;
  --blue-dark: #0d3b8f;
  --blue-light: #f4f8ff;
  --red: #e02e24;
  --gold: #f0a020;
  --text: #2c3e50;
  --text-light: #66788a;
  --border: #e3e8ef;
  --radius: 14px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--text);
  line-height: 1.7;
  background: #fff;
}
a { text-decoration: none; color: var(--blue); }
img { max-width: 100%; display: block; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* 顶部导航 */
.nav {
  position: sticky; top: 0; z-index: 99;
  background: rgba(255,255,255,.95);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}
.nav-inner { display: flex; align-items: center; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--blue-dark); }
.brand img { width: 38px; height: 38px; border-radius: 10px; }
.brand .sub { font-size: 12px; color: var(--text-light); font-weight: 400; }
.nav-links { display: flex; gap: 26px; margin-left: 40px; flex: 1; }
.nav-links a { color: var(--text); font-size: 15px; }
.nav-links a.on, .nav-links a:hover { color: var(--blue); font-weight: 600; }
.btn {
  display: inline-block; padding: 10px 22px; border-radius: 8px;
  background: var(--blue); color: #fff; font-size: 15px; font-weight: 600;
  transition: all .2s;
}
.btn:hover { background: var(--blue-dark); color: #fff; }
.btn-ghost { background: #fff; color: var(--blue); border: 1px solid var(--blue); }
.btn-ghost:hover { background: var(--blue-light); color: var(--blue); }
.btn-big { padding: 14px 34px; font-size: 17px; border-radius: 10px; }

/* 首屏 */
.hero {
  background: linear-gradient(160deg, #0d3b8f 0%, #1f6feb 70%, #3f8cff 100%);
  color: #fff; padding: 80px 0 90px; overflow: hidden;
}
.hero-inner { display: flex; align-items: center; gap: 48px; }
.hero-text { flex: 1; }
.hero-text h1 { font-size: 40px; line-height: 1.3; margin-bottom: 16px; }
.hero-text .sub { font-size: 18px; opacity: .92; margin-bottom: 30px; }
.hero-text .btns { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-text .trust { margin-top: 34px; font-size: 14px; opacity: .85; }
.hero-img { flex: 0 0 320px; text-align: center; }
.hero-img img { width: 300px; height: 300px; border-radius: 50%; background: rgba(255,255,255,.12); padding: 12px; }

/* 通用区块 */
.section { padding: 72px 0; }
.section-alt { background: var(--blue-light); }
.sec-head { text-align: center; margin-bottom: 44px; }
.sec-head h2 { font-size: 30px; color: var(--blue-dark); margin-bottom: 10px; }
.sec-head p { color: var(--text-light); font-size: 16px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 24px; transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 10px 28px rgba(31,111,235,.12); }
.card h3 { font-size: 19px; color: var(--blue-dark); margin-bottom: 10px; }
.card p { font-size: 14px; color: var(--text-light); }
.card .icon { font-size: 34px; margin-bottom: 12px; }

/* 数据展示：软件界面截图风 */
.app-window {
  background: #fff; border: 1px solid #d8e0ea; border-radius: 12px;
  max-width: 860px; margin: 0 auto; overflow: hidden;
  box-shadow: 0 12px 32px rgba(13,27,42,0.10);
}
.app-window-bar {
  background: #f2f5f9; border-bottom: 1px solid #e3e8ef; padding: 12px 16px;
  display: flex; align-items: center; gap: 8px;
}
.app-window-bar .dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.app-window-bar .dot.r { background: #ff5f57; }
.app-window-bar .dot.y { background: #febc2e; }
.app-window-bar .dot.g { background: #28c840; }
.app-title { margin-left: 10px; font-size: 13px; color: #4a5a6e; }
.app-window-body { padding: 26px 28px 18px; }
.kpi-row { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 20px; }
.kpi-card {
  flex: 1; min-width: 150px; background: #f6f9ff; border: 1px solid #e3ecff;
  border-radius: 10px; padding: 14px 16px;
}
.kpi-label { font-size: 12px; color: #66788a; margin-bottom: 6px; }
.kpi-value { font-size: 26px; font-weight: 700; color: #0d3b8f; }
.kpi-value span { font-size: 13px; font-weight: 400; color: #66788a; margin-left: 2px; }
.chart-wrap { position: relative; height: 320px; }
.chart-note { text-align: center; font-size: 12px; color: var(--text-light); margin-top: 12px; }

/* 页脚 */
.footer { background: #0d1b2a; color: #9fb3c8; padding: 44px 0 30px; font-size: 14px; }
.footer .cols { display: flex; gap: 60px; flex-wrap: wrap; margin-bottom: 30px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 12px; }
.footer a { color: #9fb3c8; display: block; margin: 6px 0; }
.footer .icp { border-top: 1px solid #22384f; padding-top: 18px; text-align: center; font-size: 13px; }

/* 下载页 */
.dl-main { display: flex; align-items: center; gap: 48px; padding: 56px 0; }
.dl-btns { display: flex; flex-direction: column; gap: 16px; width: 300px; }
.dl-btn { display: flex; align-items: center; gap: 14px; padding: 18px 24px; border-radius: 12px; font-size: 16px; font-weight: 700; }
.dl-btn.win { background: var(--blue); color: #fff; }
.dl-btn.mac { background: #2c3e50; color: #fff; }
.dl-btn small { display: block; font-size: 12px; font-weight: 400; opacity: .8; }
.ver-table { width: 100%; border-collapse: collapse; margin-top: 24px; }
.ver-table th, .ver-table td { border: 1px solid var(--border); padding: 12px 16px; font-size: 14px; text-align: left; }
.ver-table th { background: var(--blue-light); }

/* 时间线 */
.timeline { border-left: 3px solid var(--blue); padding-left: 28px; margin: 30px 0; }
.tl-item { position: relative; margin-bottom: 32px; }
.tl-item::before {
  content: ""; position: absolute; left: -36px; top: 6px;
  width: 14px; height: 14px; border-radius: 50%; background: var(--blue);
  border: 3px solid #fff; box-shadow: 0 0 0 3px var(--blue);
}
.tl-item .ver { font-size: 18px; font-weight: 700; color: var(--blue-dark); }
.tl-item .date { font-size: 13px; color: var(--text-light); margin-bottom: 8px; }
.tl-item ul { padding-left: 20px; font-size: 14px; }
.tl-item li { margin: 4px 0; }

/* 帮助页 */
.faq-item { border-bottom: 1px solid var(--border); padding: 18px 0; }
.faq-item h3 { font-size: 16px; color: var(--blue-dark); margin-bottom: 8px; }
.faq-item p { font-size: 14px; color: var(--text-light); }

/* 手机适配 */
@media (max-width: 860px) {
  .nav-links { display: none; }
  .hero-inner { flex-direction: column; text-align: center; }
  .hero-img { flex: 0 0 auto; }
  .hero-text h1 { font-size: 30px; }
  .cards { grid-template-columns: 1fr; }
  .dl-main { flex-direction: column; text-align: center; }
}

/* 首页 Mac 提示小字 */
.mac-tip { margin-top: 14px; font-size: 13px; color: #66788a; }
.mac-tip a { color: var(--blue); text-decoration: underline; }

/* 日报分析全景：四层下钻 */
.drill { display: flex; flex-direction: column; gap: 18px; }
.drill-item {
  display: flex; gap: 18px; align-items: stretch;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px 22px; box-shadow: 0 2px 8px rgba(13,27,42,.04);
}
.drill-tag {
  flex: 0 0 150px; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #1f6feb, #0d3b8f); color: #fff;
  border-radius: 10px; font-size: 14px; font-weight: 700; text-align: center;
  padding: 10px 8px; line-height: 1.5;
}
.drill-item:nth-child(2) .drill-tag { background: linear-gradient(135deg, #1f6feb, #1877c4); }
.drill-item:nth-child(3) .drill-tag { background: linear-gradient(135deg, #0d6efd, #0a4dbb); }
.drill-item:nth-child(4) .drill-tag { background: linear-gradient(135deg, #0a4dbb, #083a8f); }
.drill-body h3 { font-size: 18px; color: #0d3b8f; margin-bottom: 8px; }
.drill-body p { color: #4a5a6e; font-size: 15px; }
.drill-body b { color: var(--red); }
@media (max-width: 640px) {
  .drill-item { flex-direction: column; }
  .drill-tag { flex: none; padding: 8px; }
}