/* 甘小皮官网样式 - 纯静态无依赖 */
:root {
  --primary: #2fa69a;
  --primary-dark: #1f7a70;
  --ink: #1f3b37;
  --muted: #5f7a75;
  --bg: #f7fbfa;
  --card: #ffffff;
  --line: #dbe9e6;
  --accent: #f4a83a;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
}
a { color: var(--primary-dark); text-decoration: none; }
.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* 顶部 */
header.site {
  background: #ffffff;
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 10;
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; color: var(--ink); }
.brand .logo {
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), #6fd0c4);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 800;
}
.nav ul { display: flex; gap: 22px; list-style: none; }
.nav ul a { font-size: 15px; color: var(--muted); padding: 6px 2px; }
.nav ul a:hover, .nav ul a.active { color: var(--primary-dark); font-weight: 600; }
.hotline { font-size: 14px; color: var(--primary-dark); font-weight: 700; white-space: nowrap; }

/* 首屏 */
.hero {
  background: linear-gradient(160deg, #e8f6f3 0%, #f7fbfa 70%);
  padding: 64px 0 56px;
  text-align: center;
}
.hero h1 { font-size: 34px; line-height: 1.3; letter-spacing: 1px; }
.hero h1 span { color: var(--primary-dark); }
.hero p.sub { margin: 16px auto 28px; max-width: 720px; color: var(--muted); font-size: 16px; }
.hero .cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 12px 28px; border-radius: 999px;
  font-size: 15px; font-weight: 600; border: 1px solid transparent;
}
.btn.primary { background: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.ghost { border-color: var(--primary); color: var(--primary-dark); background: #fff; }
.badges { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }
.badge {
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  padding: 8px 16px; font-size: 13px; color: var(--muted);
}
.badge b { color: var(--ink); }

/* 区块 */
section.block { padding: 56px 0; }
section.block.alt { background: #eef7f5; }
.block h2 { font-size: 26px; text-align: center; margin-bottom: 8px; }
.block p.lead { text-align: center; color: var(--muted); margin-bottom: 32px; font-size: 15px; }

/* 产品卡片 */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 22px; display: flex; flex-direction: column; gap: 10px;
  transition: box-shadow .2s;
}
.card:hover { box-shadow: 0 8px 24px rgba(47,166,154,.12); }
.card .tag { align-self: flex-start; font-size: 12px; color: var(--primary-dark); background: #e3f4f1; border-radius: 999px; padding: 3px 12px; font-weight: 600; }
.card h3 { font-size: 18px; }
.card .fn { color: var(--muted); font-size: 14px; }
.card .price { font-size: 20px; font-weight: 800; color: var(--primary-dark); }
.card .price small { font-size: 12px; color: var(--muted); font-weight: 400; }
.img-ph {
  border-radius: 10px; background: repeating-linear-gradient(45deg,#eef7f5,#eef7f5 12px,#e6f2ef 12px,#e6f2ef 24px);
  border: 1px dashed var(--line); height: 150px;
  display: flex; align-items: center; justify-content: center;
  color: #9db8b2; font-size: 13px;
}
.spec { font-size: 13px; color: var(--muted); }
.spec b { color: var(--ink); }

/* 卖点 */
.usps { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; }
.usp { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 22px; }
.usp .ic { font-size: 26px; }
.usp h3 { font-size: 16px; margin: 8px 0 6px; }
.usp p { font-size: 13.5px; color: var(--muted); }

/* FAQ */
.faq-list { max-width: 820px; margin: 0 auto; }
details { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 16px 20px; margin-bottom: 12px; }
details summary { cursor: pointer; font-weight: 600; font-size: 15.5px; list-style: none; }
details summary::before { content: "Q "; color: var(--primary-dark); font-weight: 800; }
details[open] summary { margin-bottom: 8px; }
details .ans { color: var(--muted); font-size: 14.5px; }
details .ans::before { content: "A "; color: var(--accent); font-weight: 800; }

/* 创始人 */
.founder { display: flex; gap: 28px; align-items: flex-start; flex-wrap: wrap; }
.founder .ph {
  flex: 0 0 220px; height: 260px; border-radius: 14px;
  background: repeating-linear-gradient(45deg,#eef7f5,#eef7f5 12px,#e6f2ef 12px,#e6f2ef 24px);
  border: 1px dashed var(--line); display: flex; align-items: center; justify-content: center; color: #9db8b2; font-size: 13px;
}
.founder .bio { flex: 1 1 480px; }
.founder .bio h3 { font-size: 20px; margin-bottom: 12px; }
.founder .bio ul { margin: 0 0 14px 18px; color: var(--muted); font-size: 14.5px; }
.founder .bio ul li { margin-bottom: 6px; }

/* 页脚 */
footer.site { background: #17332f; color: #cfe3df; padding: 40px 0 28px; margin-top: 40px; }
footer.site .cols { display: flex; gap: 40px; flex-wrap: wrap; justify-content: space-between; }
footer.site h4 { color: #fff; font-size: 15px; margin-bottom: 10px; }
footer.site p, footer.site a { font-size: 13.5px; color: #9fbcB6; }
footer.site a { color: #9fbcb6; display: block; margin-bottom: 6px; }
footer.site a:hover { color: #fff; }
.copyright { text-align: center; margin-top: 28px; font-size: 12.5px; color: #7ea39c; }

/* 电机对比表 */
.cmp-wrap { overflow-x: auto; }
table.cmp { width: 100%; min-width: 660px; border-collapse: collapse; background: #fff; border: 1px solid var(--line); font-size: 14px; }
.cmp th, .cmp td { padding: 13px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.cmp thead th { background: var(--primary-dark); color: #fff; font-size: 14.5px; }
.cmp thead th.good { background: var(--primary); }
.cmp td.good { background: #f2fbf9; }
.cmp tbody tr:last-child td { border-bottom: none; }
.cmp td:first-child { font-weight: 600; white-space: nowrap; }
.cmp-note { text-align: center; color: var(--muted); font-size: 12.5px; margin-top: 10px; }

/* 图片占位升级为真实图片 */
.img-ph img { width: 100%; height: 100%; object-fit: cover; border-radius: 10px; display: block; }
.founder .ph img { width: 100%; height: 100%; object-fit: cover; border-radius: 14px; display: block; }

/* 响应式 */
@media (max-width: 720px) {
  .nav ul { display: none; }
  .hero h1 { font-size: 26px; }
  .block h2 { font-size: 22px; }
}