/* ============================================================
   weiniuai.com 全局样式 —— 微妞智能体宣传站
   纯 CSS，无框架；亮色科技蓝主题，与海报视觉一致
   ============================================================ */
:root {
  --blue-600: #1d5cf0;
  --blue-700: #1747c2;
  --blue-500: #3b7bff;
  --blue-100: #e8f0ff;
  --blue-50: #f4f8ff;
  --ink: #17233d;
  --ink-2: #4a5872;
  --ink-3: #8a94a8;
  --orange: #f2803c;
  --line: #e4e9f2;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(23, 71, 194, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  line-height: 1.7;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

a { color: var(--blue-600); text-decoration: none; }
img { max-width: 100%; display: block; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  color: #fff;
  box-shadow: 0 8px 20px rgba(29, 92, 240, .32);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(29, 92, 240, .4); color: #fff; }
.btn-ghost {
  background: #fff;
  color: var(--blue-600);
  border: 1.5px solid var(--blue-100);
}
.btn-ghost:hover { border-color: var(--blue-500); background: var(--blue-50); }
.btn-disabled {
  background: #eef1f6;
  color: var(--ink-3);
  cursor: not-allowed;
}

/* ---------- 导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo { display: inline-flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 34px; height: 34px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  color: #fff; font-size: 17px; font-weight: 700;
}
.logo-text { font-size: 18px; font-weight: 700; color: var(--ink); }
.site-nav { display: flex; align-items: center; gap: 28px; }
.site-nav a { color: var(--ink-2); font-size: 15px; font-weight: 500; }
.site-nav a:hover { color: var(--blue-600); }
.site-nav .nav-cta {
  background: var(--blue-600);
  color: #fff;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
}
.site-nav .nav-cta:hover { background: var(--blue-700); color: #fff; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(900px 400px at 85% -10%, rgba(59, 123, 255, .16), transparent),
    linear-gradient(#f7faff, #eef4ff);
  border-bottom: 1px solid var(--line);
}
.hero-inner { padding: 88px 24px 64px; text-align: center; }
.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--blue-100);
  color: var(--blue-700);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 22px;
}
.hero h1 {
  font-size: 46px;
  line-height: 1.25;
  letter-spacing: .5px;
  margin-bottom: 20px;
}
.hero h1 em {
  font-style: normal;
  color: var(--blue-600);
}
.hero-sub {
  max-width: 680px;
  margin: 0 auto 32px;
  font-size: 18px;
  color: var(--ink-2);
}
.hero-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
.hero-points { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; list-style: none; }
.hero-points li {
  background: #fff;
  border: 1px solid var(--blue-100);
  color: var(--blue-700);
  font-size: 14px;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: 999px;
  box-shadow: var(--shadow);
}

/* ---------- 一句话判断横幅 ---------- */
.verdict { background: linear-gradient(90deg, #e9f7df, #d6f0c2); border-bottom: 1px solid var(--line); }
.verdict p { text-align: center; padding: 16px 24px; font-size: 17px; color: #2f5a1c; }

/* ---------- 通用 Section ---------- */
.section { padding: 76px 0; }
.section-alt { background: var(--blue-50); }
.section-title { text-align: center; font-size: 32px; margin-bottom: 12px; }
.section-sub { text-align: center; color: var(--ink-3); font-size: 16px; margin-bottom: 44px; }

/* ---------- 产品能力 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  transition: transform .15s ease;
}
.feature-card:hover { transform: translateY(-4px); }
.feature-icon { font-size: 30px; margin-bottom: 14px; }
.feature-card h3 { font-size: 18px; margin-bottom: 8px; }
.feature-card p { font-size: 14.5px; color: var(--ink-2); }

/* ---------- 对比 ---------- */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 920px;
  margin: 0 auto;
}
.compare-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.compare-head {
  text-align: center;
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  padding: 14px;
}
.head-blue { background: linear-gradient(135deg, var(--blue-500), var(--blue-700)); }
.head-orange { background: linear-gradient(135deg, #f6a44f, #e8701f); }
.compare-body { padding: 26px 24px; text-align: center; flex: 1; }
.compare-lead { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.compare-desc { font-size: 14.5px; color: var(--ink-2); margin-bottom: 20px; }
.tag-list { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; list-style: none; }
.tag { font-size: 13px; font-weight: 600; padding: 6px 14px; border-radius: 999px; }
.tag-blue { background: var(--blue-100); color: var(--blue-700); }
.tag-gray { background: #eef1f6; color: var(--ink-3); }
.compare-foot {
  text-align: center;
  padding: 12px;
  font-size: 14px;
  font-weight: 600;
  border-top: 1px dashed var(--line);
  color: var(--ink-2);
}
.compare-win .compare-foot { color: var(--blue-700); background: var(--blue-50); }

/* ---------- 收费标准 ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 920px;
  margin: 0 auto 34px;
}
.pricing-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.pricing-head {
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  color: #fff;
  text-align: center;
  font-size: 18px;
  font-weight: 700;
  padding: 15px;
}
.pricing-body { padding: 10px 28px 24px; }
.price-item { padding: 20px 0; border-bottom: 1px dashed var(--line); }
.price-item:last-child { border-bottom: none; }
.price-item h3 { font-size: 16px; margin-bottom: 4px; }
.price-note { font-size: 13.5px; color: var(--ink-3); margin-bottom: 8px; }
.price-value { font-size: 30px; font-weight: 800; color: var(--blue-600); letter-spacing: .5px; }
.price-free { color: #1f9d55; }
.price-quote { font-size: 22px; }
.price-tip {
  margin-top: 8px;
  font-size: 12.5px;
  color: var(--ink-3);
  background: var(--blue-50);
  border-radius: 8px;
  padding: 8px 12px;
  display: inline-block;
}
.pricing-banner {
  max-width: 920px;
  margin: 0 auto;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  color: #fff;
  text-align: center;
  font-size: 16px;
  font-weight: 700;
  border-radius: 999px;
  padding: 14px 24px;
  box-shadow: 0 8px 22px rgba(29, 92, 240, .28);
}

/* ---------- 下载 ---------- */
.download-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 720px;
  margin: 0 auto;
}
.download-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  padding: 34px 26px;
}
.download-soon { opacity: .82; }
.dl-icon {
  width: 64px; height: 64px;
  margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 16px;
  background: var(--blue-100);
  color: var(--blue-600);
}
.download-card h3 { font-size: 19px; margin-bottom: 4px; }
.dl-version { font-size: 14px; color: var(--ink-3); margin-bottom: 18px; }
.dl-note { margin-top: 14px; font-size: 13px; color: var(--ink-3); }

/* Mac 按芯片分包 */
.dl-arch { display: grid; gap: 10px; }
.arch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--blue-50);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 14px;
}
.arch-name { font-size: 14px; font-weight: 600; color: var(--ink-2); }
.btn-sm { padding: 8px 16px; font-size: 13px; }

/* ---------- 文档页 ---------- */
.docs-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 32px;
  padding: 44px 0 72px;
  align-items: start;
}
.docs-sidebar {
  position: sticky;
  top: 84px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.docs-sidebar h3 { font-size: 13px; color: var(--ink-3); letter-spacing: 1px; margin-bottom: 10px; }
.docs-sidebar ul { list-style: none; }
.docs-sidebar li a {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--ink-2);
}
.docs-sidebar li a:hover { background: var(--blue-50); color: var(--blue-600); }
.docs-sidebar li a.active { background: var(--blue-100); color: var(--blue-700); font-weight: 600; }

.docs-main {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px 44px;
  box-shadow: var(--shadow);
  min-width: 0;
}
.doc-card-list { display: grid; gap: 18px; }
.doc-card {
  display: block;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 26px;
  box-shadow: var(--shadow);
  transition: transform .15s ease, border-color .15s ease;
}
.doc-card:hover { transform: translateY(-3px); border-color: var(--blue-500); }
.doc-card h2 { font-size: 18px; color: var(--ink); margin-bottom: 6px; }
.doc-card p { font-size: 14.5px; color: var(--ink-2); }
.doc-card .doc-meta { font-size: 12.5px; color: var(--ink-3); margin-top: 10px; }

/* markdown 正文排版 */
.docs-main h1 { font-size: 28px; margin-bottom: 8px; padding-bottom: 12px; border-bottom: 2px solid var(--blue-100); }
.docs-main h2 { font-size: 21px; margin: 34px 0 12px; padding-left: 12px; border-left: 4px solid var(--blue-500); }
.docs-main h3 { font-size: 17px; margin: 26px 0 10px; }
.docs-main h4 { font-size: 15.5px; margin: 20px 0 8px; }
.docs-main p { margin: 10px 0; color: var(--ink-2); font-size: 15px; }
.docs-main ul, .docs-main ol { margin: 10px 0 10px 24px; color: var(--ink-2); font-size: 15px; }
.docs-main li { margin: 5px 0; }
.docs-main code {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  background: var(--blue-50);
  color: var(--blue-700);
  padding: 2px 6px;
  border-radius: 5px;
  word-break: break-all;
}
.docs-main pre {
  background: #0f1b33;
  color: #dbe6ff;
  border-radius: 10px;
  padding: 18px 20px;
  overflow-x: auto;
  margin: 14px 0;
  line-height: 1.6;
}
.docs-main pre code { background: none; color: inherit; padding: 0; font-size: 13px; }
.docs-main blockquote {
  border-left: 4px solid var(--blue-500);
  background: var(--blue-50);
  padding: 12px 16px;
  border-radius: 0 10px 10px 0;
  margin: 14px 0;
  color: var(--ink-2);
}
.docs-main table { border-collapse: collapse; width: 100%; margin: 14px 0; font-size: 14px; }
.docs-main th, .docs-main td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; }
.docs-main th { background: var(--blue-50); color: var(--ink); font-weight: 600; }
.docs-main hr { border: none; border-top: 1px dashed var(--line); margin: 26px 0; }
.docs-main a { word-break: break-all; }
.docs-back { margin-bottom: 20px; font-size: 14px; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: #101b33;
  color: #9aa7c2;
  padding: 44px 0 30px;
  margin-top: 0;
}
.footer-inner { text-align: center; }
.footer-brand { color: #fff; font-size: 17px; font-weight: 700; margin-bottom: 14px; }
.footer-nav { display: flex; justify-content: center; flex-wrap: wrap; gap: 22px; margin-bottom: 18px; }
.footer-nav a { color: #9aa7c2; font-size: 14px; }
.footer-nav a:hover { color: #fff; }
.footer-beian { font-size: 13px; margin-bottom: 8px; }
.footer-beian a { color: #9aa7c2; }
.footer-beian a:hover { color: #fff; }
.copyright { font-size: 13px; }

/* ---------- 入场动画 ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .5s ease, transform .5s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  .site-nav {
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 24px rgba(23, 35, 61, .08);
    display: none;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 14px 24px; border-top: 1px solid var(--line); }
  .site-nav .nav-cta { border-radius: 0; text-align: center; }
  .nav-toggle { display: block; }

  .hero h1 { font-size: 32px; }
  .hero-inner { padding: 56px 24px 48px; }
  .hero-sub { font-size: 16px; }
  .section { padding: 56px 0; }
  .section-title { font-size: 26px; }

  .compare-grid, .pricing-grid, .download-grid { grid-template-columns: 1fr; }

  .docs-layout { grid-template-columns: 1fr; }
  .docs-sidebar { position: static; }
  .docs-main { padding: 26px 20px; }
  .docs-main pre { padding: 14px; font-size: 12px; }
}