/* ===== 了解更多 · 联系我们 独立页样式 ===== */
:root {
  --color-primary: #2d5a3d;
  --color-primary-light: #4a7c59;
  --color-primary-dark: #1a3d2e;
  --color-bg: #f8f6f1;
  --color-text: #2c2c2c;
  --color-text-muted: #5c5c5c;
  --font-serif: "Noto Serif SC", "SimSun", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", sans-serif;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(45, 90, 61, 0.12);
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 头部 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 24px;
  background: rgba(248, 246, 241, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(45, 90, 61, 0.08);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: baseline;
  gap: 6px;
  text-decoration: none;
  color: var(--color-primary-dark);
  font-weight: 600;
}

.logo-icon { font-size: 1.5rem; }
.logo-text { font-family: var(--font-serif); font-size: 1.35rem; }
.logo-sub { font-size: 0.85rem; color: var(--color-text-muted); font-weight: 400; }

.nav { display: flex; gap: 28px; }

.nav-link {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}

.nav-link:hover::after { width: 100%; }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-primary);
}

@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    padding: 16px;
    background: rgba(248, 246, 241, 0.98);
    border-bottom: 1px solid rgba(45, 90, 61, 0.1);
  }
  .nav.nav-open { display: flex; }
  .menu-toggle { display: flex; }
  .menu-toggle.menu-open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .menu-toggle.menu-open span:nth-child(2) { opacity: 0; }
  .menu-toggle.menu-open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
  .menu-toggle span { transition: transform 0.25s ease, opacity 0.25s ease; }
}

/* ===== 页面主标题区 ===== */
.page-hero {
  padding: 120px 0 56px;
  background: linear-gradient(135deg, #2d5a3d 0%, #4a7c59 50%, #6b9b7a 100%);
  text-align: center;
  color: #fff;
}

.page-hero-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.page-hero-desc {
  font-size: 1rem;
  opacity: 0.92;
  max-width: 520px;
  margin: 0 auto;
}

/* ===== 通用区块 ===== */
.block-section {
  padding: 56px 0;
}

.block-section:nth-child(even) {
  background: #fff;
}

.block-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-primary-dark);
  margin-bottom: 28px;
  padding-bottom: 12px;
  border-bottom: 2px solid rgba(45, 90, 61, 0.15);
}

/* ===== 公司简介 ===== */
.block-about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  max-width: 920px;
  margin: 0 auto;
}

.about-text .card-icon {
  font-size: 2.2rem;
  display: block;
  margin-bottom: 12px;
}

.about-text h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--color-primary-dark);
  margin-bottom: 14px;
}

.about-text p {
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.75;
}

.about-stats { padding: 24px 0; }

.stats {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 32px;
}

.stats li {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 16px 20px;
  background: rgba(45, 90, 61, 0.06);
  border-radius: var(--radius);
  transition: var(--transition);
}

.stats li:hover { background: rgba(45, 90, 61, 0.1); }

.stats strong {
  font-size: 1.6rem;
  color: var(--color-primary);
  margin-bottom: 4px;
  line-height: 1.2;
}

.stats span { font-size: 0.9rem; color: var(--color-text-muted); }

/* ===== 产品中心 ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.product-card {
  padding: 24px;
  background: var(--color-bg);
  border-radius: var(--radius);
  text-align: center;
  transition: var(--transition);
  border: 1px solid transparent;
}

.product-card:hover {
  border-color: rgba(45, 90, 61, 0.2);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(45, 90, 61, 0.1);
}

.product-img { font-size: 2.5rem; margin-bottom: 12px; }

.product-card h4 {
  font-size: 1.1rem;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.product-card p { font-size: 0.9rem; color: var(--color-text-muted); }

/* ===== 新闻动态 ===== */
.news-list {
  list-style: none;
  max-width: 640px;
  margin: 0 auto;
}

.news-item {
  padding: 16px 0;
  border-bottom: 1px solid rgba(45, 90, 61, 0.08);
  display: flex;
  align-items: baseline;
  gap: 20px;
  transition: background var(--transition);
}

.news-item:hover { background: rgba(45, 90, 61, 0.04); }

.news-date {
  flex-shrink: 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.news-item a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
}

.news-item a:hover { color: var(--color-primary); }

/* ===== 企业文化 ===== */
.culture-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.culture-item {
  padding: 28px;
  background: linear-gradient(145deg, rgba(45, 90, 61, 0.06), rgba(45, 90, 61, 0.02));
  border-radius: var(--radius);
  text-align: center;
  transition: var(--transition);
}

.culture-item:hover {
  background: linear-gradient(145deg, rgba(45, 90, 61, 0.1), rgba(45, 90, 61, 0.04));
  transform: translateY(-2px);
}

.culture-icon { font-size: 2rem; display: block; margin-bottom: 12px; }

.culture-item h4 {
  font-size: 1.1rem;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.culture-item p { font-size: 0.95rem; color: var(--color-text-muted); }

/* ===== 展品展示 ===== */
.exhibit-intro-text {
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: 28px;
  font-size: 0.98rem;
}

.exhibit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.exhibit-card {
  background: var(--color-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid transparent;
  transition: var(--transition);
}

.exhibit-card:hover {
  border-color: rgba(45, 90, 61, 0.2);
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(45, 90, 61, 0.12);
}

.exhibit-img-wrap {
  position: relative;
  aspect-ratio: 4 / 3;
  background: linear-gradient(145deg, rgba(45, 90, 61, 0.08), rgba(45, 90, 61, 0.04));
  overflow: hidden;
}

.exhibit-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition);
}

.exhibit-card:hover .exhibit-img-wrap img { transform: scale(1.05); }

.exhibit-placeholder {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  background: linear-gradient(145deg, rgba(45, 90, 61, 0.06), rgba(45, 90, 61, 0.02));
}

.exhibit-placeholder.show { display: flex; }

.exhibit-info { padding: 18px 20px; }

.exhibit-info h4 {
  font-size: 1.1rem;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.exhibit-info p { font-size: 0.9rem; color: var(--color-text-muted); margin: 0; line-height: 1.5; }

/* ===== 联系我们 ===== */
.block-contact {
  background: linear-gradient(180deg, rgba(45, 90, 61, 0.06) 0%, var(--color-bg) 100%);
  border-top: 1px solid rgba(45, 90, 61, 0.08);
  padding-top: 56px;
  padding-bottom: 72px;
}

.contact-lead {
  color: var(--color-text-muted);
  font-size: 0.98rem;
  margin-bottom: 32px;
}

.contact-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.contact-info { display: flex; flex-direction: column; gap: 20px; }

.contact-block {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 20px 24px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: 0 2px 12px rgba(45, 90, 61, 0.06);
  transition: var(--transition);
}

.contact-block:hover { box-shadow: 0 4px 20px rgba(45, 90, 61, 0.1); }

.contact-icon { font-size: 1.6rem; flex-shrink: 0; line-height: 1; }

.contact-block-text { min-width: 0; }

.contact-block h4 {
  font-size: 1rem;
  color: var(--color-primary-dark);
  margin-bottom: 6px;
}

.contact-block p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.5;
}

.contact-map-wrap {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(45, 90, 61, 0.04);
  min-height: 260px;
}

.contact-map-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  gap: 8px;
}

.contact-map-placeholder span { font-weight: 600; color: var(--color-primary); }

/* ===== 页脚 ===== */
.footer {
  padding: 32px 24px;
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.85);
  text-align: center;
}

.footer p { font-size: 0.9rem; }

.footer-tagline { margin-top: 8px; font-size: 0.85rem; opacity: 0.8; }

.footer-back { margin-top: 16px; }

.footer-back a {
  color: rgba(255,255,255,0.9);
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-back a:hover { text-decoration: underline; }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .page-hero { padding: 100px 0 40px; }
  .page-hero-title { font-size: 1.6rem; }
  .block-section { padding: 40px 0; }
  .block-about-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    text-align: center;
  }
  .about-text p { text-align: left; }
  .about-stats { padding: 0; }
  .stats { grid-template-columns: 1fr; }
  .stats li { align-items: center; }
  .contact-body { grid-template-columns: 1fr; gap: 24px; }
  .contact-map-wrap { min-height: 200px; }
}