/* ============================================
   多利卡新能源电动叉车官网 - 主样式表
   配色: 新能源绿 #00A859 + 深蓝 #1A3A6C
   风格: 产品型录风 (大字报 + 参数表格突出)
   ============================================ */

/* ---------- CSS 变量 ---------- */
:root {
  /* 品牌色 */
  --color-primary: #00A859;        /* 新能源绿 */
  --color-primary-dark: #008A49;
  --color-primary-light: #E6F7F0;
  --color-secondary: #1A3A6C;      /* 深蓝 */
  --color-secondary-dark: #11254A;
  --color-accent: #FF6B00;         /* 橙色点缀 (CTA/警示) */

  /* 中性色 */
  --color-text: #1A1A1A;
  --color-text-light: #5A5A5A;
  --color-text-muted: #8A8A8A;
  --color-border: #E5E5E5;
  --color-bg: #FFFFFF;
  --color-bg-soft: #F7F9FC;
  --color-bg-dark: #1A3A6C;

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", sans-serif;

  /* 间距 */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.10);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);

  /* 容器 */
  --container-width: 1200px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s; }
a:hover { color: var(--color-primary); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 容器 ---------- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ---------- 排版 ---------- */
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; color: var(--color-secondary); }
h1 { font-size: clamp(1.8rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
.section-title {
  text-align: center;
  margin-bottom: var(--space-lg);
}
.section-title h2 { display: inline-block; position: relative; }
.section-title h2::after {
  content: "";
  display: block;
  width: 60px;
  height: 4px;
  background: var(--color-primary);
  margin: var(--space-sm) auto 0;
  border-radius: 2px;
}
.section-title p {
  color: var(--color-text-light);
  margin-top: var(--space-sm);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}
.eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: var(--space-xs);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  transition: all .2s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-secondary {
  background: var(--color-secondary);
  color: #fff;
}
.btn-secondary:hover {
  background: var(--color-secondary-dark);
  color: #fff;
}
.btn-outline {
  border: 2px solid var(--color-secondary);
  color: var(--color-secondary);
}
.btn-outline:hover {
  background: var(--color-secondary);
  color: #fff;
}
.btn-accent {
  background: var(--color-accent);
  color: #fff;
}
.btn-accent:hover {
  background: #E55A00;
  color: #fff;
}
.btn-lg { padding: 1rem 2.25rem; font-size: 1.1rem; }

/* ---------- 顶部公告条 ---------- */
.topbar {
  background: var(--color-secondary-dark);
  color: #fff;
  font-size: 0.85rem;
  padding: 0.5rem 0;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.topbar a { color: #fff; opacity: 0.9; }
.topbar a:hover { opacity: 1; color: var(--color-primary); }
.topbar .topbar-info { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.topbar .topbar-cta { display: flex; gap: 1rem; }

/* ---------- 头部导航 ---------- */
.site-header {
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-secondary);
}
.logo img { height: 44px; width: auto; }
.logo .logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo .logo-text small { font-size: 0.7rem; font-weight: 400; color: var(--color-text-muted); letter-spacing: 0.05em; }

.main-nav ul { display: flex; gap: 0.5rem; align-items: center; }
.main-nav a {
  display: block;
  padding: 0.6rem 1rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
}
.main-nav a:hover, .main-nav a.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}
.header-cta { display: flex; gap: 0.75rem; align-items: center; }
.header-phone {
  font-weight: 700;
  color: var(--color-secondary);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.menu-toggle { display: none; font-size: 1.5rem; padding: 0.4rem; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%);
  color: #fff;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('../images/hero-banner.jpg') center/cover no-repeat;
  opacity: 0.35;
}
.hero .container {
  position: relative;
  z-index: 1;
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}
.hero h1 { color: #fff; margin-bottom: var(--space-md); }
.hero h1 span { color: var(--color-primary); }
.hero p { font-size: 1.15rem; opacity: 0.95; margin-bottom: var(--space-lg); max-width: 560px; }
.hero-buttons { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255,255,255,0.2);
}
.hero-stat .num { font-size: 2rem; font-weight: 700; color: var(--color-primary); }
.hero-stat .label { font-size: 0.9rem; opacity: 0.85; }
.hero-image {
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  backdrop-filter: blur(6px);
}
.hero-image img { border-radius: var(--radius-md); }

/* ---------- 通用 Section ---------- */
section { padding: var(--space-2xl) 0; }
section.bg-soft { background: var(--color-bg-soft); }
section.bg-dark { background: var(--color-secondary); color: #fff; }
section.bg-dark h2, section.bg-dark h3 { color: #fff; }

/* ---------- 产品矩阵 ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}
.product-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all .3s;
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}
.product-card .product-img {
  background: var(--color-bg-soft);
  aspect-ratio: 4/3;
  overflow: hidden;
  position: relative;
}
.product-card .product-img img {
  width: 100%; height: 100%; object-fit: contain;
  transition: transform .4s;
}
.product-card:hover .product-img img { transform: scale(1.05); }
.product-card .product-badge {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  background: var(--color-primary);
  color: #fff;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}
.product-card .product-badge.flagship {
  background: var(--color-accent);
}
.product-card .product-body { padding: var(--space-md); flex: 1; display: flex; flex-direction: column; }
.product-card h3 { margin-bottom: 0.5rem; }
.product-card .product-model { color: var(--color-text-muted); font-size: 0.9rem; margin-bottom: var(--space-sm); }
.product-card .product-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  font-size: 0.9rem;
  margin-bottom: var(--space-md);
  padding: var(--space-sm) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.product-card .product-specs div { display: flex; flex-direction: column; }
.product-card .product-specs .spec-label { color: var(--color-text-muted); font-size: 0.8rem; }
.product-card .product-specs .spec-value { font-weight: 600; color: var(--color-secondary); }
.product-card .product-actions { margin-top: auto; display: flex; gap: 0.5rem; }
.product-card .btn { flex: 1; justify-content: center; padding: 0.65rem 1rem; font-size: 0.95rem; }

/* ---------- 实力/特性 ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-lg);
}
.feature-item {
  text-align: center;
  padding: var(--space-lg) var(--space-md);
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid var(--color-border);
  transition: all .3s;
}
.feature-item:hover { border-color: var(--color-primary); box-shadow: var(--shadow-md); }
.feature-icon {
  width: 64px; height: 64px;
  margin: 0 auto var(--space-sm);
  background: var(--color-primary-light);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem;
  color: var(--color-primary);
}
.feature-item h3 { margin-bottom: 0.5rem; font-size: 1.15rem; }
.feature-item p { color: var(--color-text-light); font-size: 0.95rem; }

/* ---------- 参数表 ---------- */
.spec-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  background: #fff;
}
.spec-table { min-width: 600px; }
.spec-table th, .spec-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.spec-table thead th {
  background: var(--color-secondary);
  color: #fff;
  font-weight: 600;
}
.spec-table tbody tr:nth-child(even) { background: var(--color-bg-soft); }
.spec-table tbody tr:hover { background: var(--color-primary-light); }
.spec-table .spec-group {
  background: var(--color-primary-light) !important;
  font-weight: 600;
  color: var(--color-secondary);
}
.spec-table .spec-key { color: var(--color-text-light); width: 40%; }

/* ---------- 公司实力 ---------- */
.about-preview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}
.about-preview .about-text h2 { margin-bottom: var(--space-md); }
.about-preview .about-text p { margin-bottom: var(--space-md); color: var(--color-text-light); }
.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-lg);
}
.about-stat {
  padding: var(--space-md);
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary);
}
.about-stat .num { font-size: 1.8rem; font-weight: 700; color: var(--color-primary); }
.about-stat .label { font-size: 0.9rem; color: var(--color-text-light); }
.about-image img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  overflow: hidden;
}
.faq-item summary {
  padding: 1.1rem 1.5rem;
  font-weight: 600;
  color: var(--color-secondary);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--color-primary);
  transition: transform .2s;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item[open] summary { border-bottom: 1px solid var(--color-border); }
.faq-answer { padding: 1.1rem 1.5rem; color: var(--color-text-light); }
.faq-answer p { margin-bottom: 0.5rem; }
.faq-answer p:last-child { margin-bottom: 0; }
.faq-answer strong { color: var(--color-secondary); }
.faq-answer ul { padding-left: 1.5rem; margin: 0.5rem 0; }
.faq-answer ul li { list-style: disc; margin-bottom: 0.3rem; }
.faq-tip {
  margin-top: 0.75rem; padding: 0.75rem 1rem;
  background: var(--color-primary-light);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: 0.92rem; color: var(--color-secondary);
}
.faq-group-title {
  font-size: 1.25rem;
  color: var(--color-secondary);
  margin: var(--space-lg) 0 var(--space-sm);
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-primary);
  display: flex; align-items: center; gap: 0.6rem;
}
.faq-group-title:first-child { margin-top: 0; }
.faq-group-title .group-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px;
  background: var(--color-primary); color: #fff;
  border-radius: 50%; font-size: 0.95rem; font-weight: 700; flex-shrink: 0;
}
.faq-group-title small { font-size: 0.85rem; font-weight: 400; color: var(--color-text-muted); }

/* ---------- CTA ---------- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  text-align: center;
  padding: var(--space-2xl) 0;
}
.cta-section h2 { color: #fff; margin-bottom: var(--space-sm); }
.cta-section p { font-size: 1.1rem; opacity: 0.95; margin-bottom: var(--space-lg); }
.cta-section .btn { background: #fff; color: var(--color-primary); }
.cta-section .btn:hover { background: var(--color-secondary); color: #fff; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--color-secondary-dark);
  color: #fff;
  padding: var(--space-2xl) 0 var(--space-md);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}
.footer-col h4 { color: #fff; margin-bottom: var(--space-sm); font-size: 1.05rem; }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col a { color: rgba(255,255,255,0.8); font-size: 0.95rem; }
.footer-col a:hover { color: var(--color-primary); }
.footer-contact li { display: flex; gap: 0.5rem; margin-bottom: 0.75rem; color: rgba(255,255,255,0.85); font-size: 0.95rem; }
.footer-contact .icon { color: var(--color-primary); flex-shrink: 0; }
.footer-logo { display: flex; align-items: center; gap: 0.6rem; margin-bottom: var(--space-sm); }
.footer-logo img { height: 44px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: var(--space-md);
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
}
.footer-bottom a { color: rgba(255,255,255,0.8); }

/* ---------- 面包屑 ---------- */
.breadcrumb {
  background: var(--color-bg-soft);
  padding: var(--space-sm) 0;
  font-size: 0.9rem;
}
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.breadcrumb li::after { content: "/"; margin-left: 0.5rem; color: var(--color-text-muted); }
.breadcrumb li:last-child::after { content: ""; }
.breadcrumb a { color: var(--color-text-light); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb li:last-child { color: var(--color-secondary); font-weight: 500; }

/* ---------- 产品详情页 ---------- */
.product-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}
.product-gallery .main-img {
  background: var(--color-bg-soft);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  border: 1px solid var(--color-border);
}
.product-gallery .main-img img { width: 100%; }
.product-info h1 { margin-bottom: var(--space-xs); }
.product-info .product-model-tag {
  display: inline-block;
  background: var(--color-primary-light);
  color: var(--color-primary);
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
}
.product-info .product-desc { color: var(--color-text-light); margin-bottom: var(--space-md); }
.product-info .key-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}
.product-info .key-spec {
  background: var(--color-bg-soft);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary);
}
.product-info .key-spec .label { font-size: 0.8rem; color: var(--color-text-muted); }
.product-info .key-spec .value { font-weight: 700; color: var(--color-secondary); font-size: 1.1rem; }
.product-info .product-cta { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: var(--space-md); }
.product-info .product-trust { font-size: 0.9rem; color: var(--color-text-muted); display: flex; flex-wrap: wrap; gap: 1rem; }
.product-info .product-trust span { display: flex; align-items: center; gap: 0.3rem; }

/* ---------- 表单 ---------- */
.form-group { margin-bottom: var(--space-md); }
.form-group label { display: block; margin-bottom: 0.4rem; font-weight: 500; color: var(--color-secondary); }
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color .2s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }

/* ---------- 联系页 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-xl);
  align-items: start;
}
.contact-info-card {
  background: var(--color-secondary);
  color: #fff;
  padding: var(--space-lg);
  border-radius: var(--radius-md);
}
.contact-info-card h3 { color: #fff; margin-bottom: var(--space-md); }
.contact-info-card ul li { display: flex; gap: 0.75rem; margin-bottom: var(--space-md); }
.contact-info-card .icon { color: var(--color-primary); font-size: 1.3rem; }
.contact-info-card .label { font-size: 0.85rem; opacity: 0.8; }
.contact-info-card .value { font-size: 1.05rem; font-weight: 600; }
.contact-form-card {
  background: #fff;
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}
.contact-form-card h3 { margin-bottom: var(--space-md); }

/* ---------- 浮动联系按钮 ---------- */
.float-contact {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.float-contact a {
  width: 52px; height: 52px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 1.4rem;
  box-shadow: var(--shadow-md);
  transition: transform .2s;
}
.float-contact a:hover { transform: scale(1.1); }
.float-contact .phone { background: var(--color-primary); }
.float-contact .wechat { background: #07C160; }
.float-contact .top { background: var(--color-secondary); }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-image { display: none; }
  .about-preview { grid-template-columns: 1fr; }
  .product-hero { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .main-nav { display: none; }
  .header-cta .btn { display: none; }
  .menu-toggle { display: block; }
  .main-nav.open {
    display: block;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: #fff;
    box-shadow: var(--shadow-md);
    padding: var(--space-sm);
  }
  .main-nav.open ul { flex-direction: column; align-items: stretch; }
  .main-nav.open a { padding: 0.85rem 1rem; }
  .topbar .topbar-info { font-size: 0.8rem; gap: 1rem; }
  .topbar .topbar-cta { gap: 0.5rem; }
  .topbar .topbar-cta a[href^="tel:"] { display: none; }
  .topbar .topbar-cta a:not([href^="tel:"]) { font-size: 0.85rem; padding: 0.2rem 0.6rem; border: 1px solid rgba(255,255,255,0.3); border-radius: 4px; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); gap: 0.5rem; }
  .hero-stat .num { font-size: 1.4rem; }
  .form-row { grid-template-columns: 1fr; }
  section { padding: var(--space-xl) 0; }
}
@media (max-width: 480px) {
  .hero-buttons { flex-direction: column; }
  .hero-buttons .btn { width: 100%; justify-content: center; }
  .product-card .product-actions { flex-direction: column; }
  .float-contact { right: 1rem; bottom: 1rem; }
  .float-contact a { width: 44px; height: 44px; font-size: 1.2rem; }
}