@font-face {
  font-family: "hm";
  src: url("../font/Light.woff2") format("woff2");
  font-weight: 100;
  font-display: swap;
}
@font-face {
  font-family: "hm";
  src: url("../font/Regular.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "hm";
  src: url("../font/Medium.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}
html {
  -webkit-text-size-adjust: 100%;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
/* --- 基础设置 (Reset & Base) --- */
:root {
  --color-primary: #1a1a1a;
  /* 深黑主色 */
  --color-secondary: #f5f5f5;
  /* 浅灰背景 */
  --color-accent: #c5a47e;
  /* 金色/大地色点缀 */
  --color-text: #333333;
  --color-text-light: #666666;
  --color-white: #ffffff;
  --font-main: "hm", sans-serif;
  --transition-speed: 0.4s;
  scroll-behavior: smooth;
}

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

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

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-speed) ease;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
  object-fit: cover;
}

/* --- 导航栏 (Header) --- */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  display: flex;
  justify-content: space-between;
  /* align-items: center; */
  color: #fff;
  padding: 0 4%;
  background: rgba(255, 255, 255, 0);
  z-index: 1000;
  transition: all var(--transition-speed);
  /* box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05); */
}

.logo-container {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  padding-left: 0;
  transition: all var(--transition-speed);
}

.logo-img {
  position: absolute;
  top: 50%;
  left: 74px;
  transform: translateY(-50%);
  opacity: 0;
  height: 60px;
  width: auto;
  transition: all var(--transition-speed);
}
header:hover {
  background: rgba(255, 255, 255, 0.8);
  color: var(--color-primary);
}
header:hover .logo-img {
  opacity: 1;
  left: 0;
}
header:hover .logo-container {
  padding-left: 76px;
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 2px;
  color: inherit;
}

.nav-menu {
  display: flex;
}

.nav-list {
  display: flex;
  /* align-items: center; */
  gap: 30px;
  list-style: none;
}

.nav-item {
  position: relative;
  display: flex;
  align-items: center;
}

.change-lang {
  cursor: pointer;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 1px;
  color: inherit;
  padding: 8px 0;
  position: relative;
  transition: color var(--transition-speed);
}

.nav-link:hover {
  color: var(--color-accent);
}

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

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

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background-color: var(--color-white);
  min-width: 100px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  border-radius: 4px;
  padding: 10px 0;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 1001;
}

.has-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0px);
}

.dropdown-menu li {
  list-style: none;
}

.dropdown-menu a {
  display: block;
  padding: 10px 20px;
  font-size: 13px;
  color: var(--color-text);
  transition: all 0.2s ease;
  white-space: nowrap;
}

.dropdown-menu a:hover {
  background-color: var(--color-secondary);
  color: var(--color-accent);
  padding-left: 25px;
}

.lang-selector .nav-link {
  font-size: 13px;
  color: inherit;
}

.lang-selector .nav-link:hover {
  color: var(--color-primary);
}

/* --- 移动端菜单按钮 --- */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin-top: 8px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1002;
  padding: 0;
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background-color: currentColor;
  margin: 4px 0;
  transition: all 0.3s ease;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* --- 移动端导航容器 --- */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1001;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.mobile-nav-overlay.active {
  display: block;
  opacity: 1;
}

.mobile-nav-container {
  display: none;
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  max-width: 85%;
  height: 100%;
  background-color: var(--color-white);
  z-index: 1003;
  overflow-y: auto;
  transition: right 0.3s ease;
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
}

.mobile-nav-container.active {
  right: 0;
}

.mobile-nav-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 0;
}

.close-line {
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  position: absolute;
  transition: all 0.3s ease;
}

.close-line:nth-child(1) {
  transform: rotate(45deg);
}

.close-line:nth-child(2) {
  transform: rotate(-45deg);
}

.mobile-nav-list {
  list-style: none;
  padding: 80px 0 30px;
  margin: 0;
}

.mobile-nav-item {
  border-bottom: 1px solid var(--color-secondary);
  position: relative;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
  min-height: 48px;
  transition: background-color 0.2s ease;
}

.mobile-nav-link {
  background-color: var(--color-secondary);
}

.mobile-submenu-toggle {
  position: absolute;
  right: 20px;
  top: 5px;
  /* transform: translateY(-50%); */
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.arrow-icon {
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 8px solid var(--color-text-light);
  transition: transform 0.3s ease;
}

.mobile-submenu-toggle.active .arrow-icon {
  transform: rotate(180deg);
}

.mobile-submenu {
  display: none;
  background-color: var(--color-secondary);
  list-style: none;
  padding: 0;
  margin: 0;
}

.mobile-submenu.active {
  display: block;
}

.mobile-submenu li {
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.mobile-submenu li:last-child {
  border-bottom: none;
}

.mobile-submenu a {
  display: block;
  padding: 14px 20px 14px 40px;
  font-size: 14px;
  color: var(--color-text);
  text-decoration: none;
  transition: all 0.2s ease;
}

.mobile-submenu a:hover {
  background-color: rgba(197, 164, 126, 0.1);
  color: var(--color-accent);
  padding-left: 45px;
}

.lang-selector-mobile .mobile-nav-link {
  color: var(--color-text-light);
  font-size: 14px;
}

/* --- 首屏 Hero Section --- */
.hero {
  height: 100vh;
  width: 100%;
  position: relative;
  overflow: hidden;
  /* padding-top: 80px; */
}

.heroSwiper {
  width: 100%;
  height: 100%;
  cursor: grab;
}

.swiper-slide {
  position: relative;
  overflow: hidden;
  height: 100%;
}

.slide-bg {
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: transform 0.6s ease;
  position: relative;
}

.slide-bg:hover {
  transform: scale(1.05);
}

.slide-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--color-white);
  z-index: 10;
  width: 90%;
  max-width: 1200px;
}

.slide-content h1 {
  font-size: 3.5rem;
  font-weight: 300;
  margin-bottom: 20px;
  letter-spacing: 5px;
}

.slide-content p {
  font-size: 1.2rem;
  margin-bottom: 40px;
  font-weight: 300;
  letter-spacing: 2px;
}

.slide-content .btn-cta {
  padding: 15px 40px;
  border: 1px solid var(--color-white);
  color: var(--color-white);
  font-size: 14px;
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: all var(--transition-speed);
  cursor: pointer;
  background: transparent;
}

.slide-content .btn-cta:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
}

/* Swiper分页器样式 */
.swiper-pagination {
  bottom: 30px !important;
  z-index: 100;
}

.swiper-pagination-bullet {
  width: 12px;
  height: 12px;
  background-color: rgba(255, 255, 255, 0.5);
  opacity: 1;
  transition: all 0.3s ease;
  border-radius: 50%;
}

.swiper-pagination-bullet-active {
  background-color: var(--color-white);
  width: 30px;
  border-radius: 6px;
}

/* Swiper导航按钮样式 */
.swiper-button-next,
.swiper-button-prev {
  color: var(--color-white);
  opacity: 0.7;
  transition: all 0.3s ease;
  top: 50%;
  transform: translateY(-50%);
}

.swiper-button-next:hover,
.swiper-button-prev:hover {
  opacity: 1;
  color: var(--color-accent);
}

.swiper-button-next::after,
.swiper-button-prev::after {
  font-size: 24px;
  font-weight: bold;
}

/* 确保Swiper容器正确显示 */
.swiper {
  width: 100%;
  height: 100%;
}

.swiper-wrapper {
  width: 100%;
  height: 100%;
}

.swiper-slide {
  width: 100%;
  height: 100%;
}

/* 响应式设计 */
@media (max-width: 750px) {
  header {
    height: 60px;
    padding: 0 4%;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .nav-menu-left,
  .nav-menu-right {
    display: none;
  }

  .logo-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding-left: 0;
  }

  .logo-img {
    display: none;
  }

  .logo-text {
    font-size: 16px;
  }

  /* .mobile-nav-overlay {
    display: block;
  } */

  .mobile-nav-container {
    display: block;
  }

  .mobile-nav-list {
    padding-top: 60px;
  }
}

@media (max-width: 768px) {
  .slide-content h1 {
    font-size: 2rem;
    letter-spacing: 3px;
  }

  .slide-content p {
    font-size: 1rem;
    margin-bottom: 30px;
  }

  .slide-content .btn-cta {
    padding: 12px 30px;
    font-size: 12px;
  }

  .swiper-button-next,
  .swiper-button-prev {
    display: none;
  }

  .swiper-pagination {
    bottom: 20px !important;
  }
}

@media (max-width: 480px) {
  .slide-content h1 {
    font-size: 1.5rem;
    letter-spacing: 2px;
  }
  header:hover .logo-container {
    padding: 0
  }
  .slide-content p {
    font-size: 0.9rem;
  }

  .mobile-nav-container {
    width: 70%;
    max-width: 100%;
  }

  .mobile-nav-link {
    font-size: 14px;
    padding: 14px 16px;
  }

  .mobile-submenu a {
    padding: 12px 16px 12px 36px;
    font-size: 13px;
  }
}

@media (max-width: 360px) {
  .mobile-nav-link {
    font-size: 13px;
    padding: 12px 14px;
  }

  .mobile-submenu a {
    padding: 10px 14px 10px 32px;
    font-size: 12px;
  }

  .mobile-nav-close {
    width: 40px;
    height: 40px;
  }

  .mobile-menu-toggle {
    width: 40px;
    height: 40px;
  }
}

@media (max-width: 320px) {
  .mobile-nav-link {
    font-size: 12px;
    padding: 10px 12px;
  }

  .mobile-submenu a {
    padding: 8px 12px 8px 28px;
    font-size: 11px;
  }
}

/* --- 产品系列 (Collections) --- */
.section-title {
  position: relative;
  text-align: center;
  margin: 80px 0 40px;
}

.section-title h2 {
  font-size: 2rem;
  font-weight: 400;
  margin-bottom: 10px;
  letter-spacing: 2px;
}

.section-title p {
  color: var(--color-text-light);
  font-size: 0.9rem;
  letter-spacing: 1px;
}

.section-title img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
}

.collections-grid {
  display: flex;
  gap: 2px;
  padding: 0 4%;
  margin-bottom: 80px;
  height: 400px;
  overflow: hidden;
}

.collection-item {
  position: relative;
  flex: 1;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.collection-item.current {
  flex: 2;
}

.collection-item:hover {
  flex: 2;
}

.collection-item:not(.current):not(:hover) {
  flex: 0.7;
}

.collection-item .pic-1 {
  width: 100%;
  height: 100%;
}

.collection-item .pic-2 {
  width: 0%;
  height: 0%;
}

.collection-item:hover .pic-1,
.collection-item.current .pic-1 {
  /* transform: scale(1.05); */
  width: 0%;
  height: 0%;
}

.collection-item:hover .pic-2,
.collection-item.current .pic-2 {
  /* transform: scale(1.05); */
  width: 100%;
  height: 100%;
}

.collection-text {
  position: absolute;
  bottom: 30px;
  left: 30px;
  color: var(--color-white);
  z-index: 2;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.collection-text h3 {
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: 5px;
}

.collection-text span {
  font-size: 0.9rem;
  text-transform: uppercase;
  opacity: 0.8;
}

.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
  pointer-events: none;
}

/* --- 宽幅展示 (Featured Big) --- */
.featured-section {
  display: flex;
  flex-wrap: wrap;
  background-color: var(--color-secondary);
}

.featured-img {
  flex: 1 1 50%;
  height: 500px;
  overflow: hidden;
}

.featured-img img {
  width: 100%;
  height: 100%;
  transition: transform 0.3s ease;
}

.featured-img:hover img {
  transform: scale(1.05);
}

.featured-content {
  flex: 1 1 50%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 60px;
}

.featured-content h3 {
  font-size: 2rem;
  margin-bottom: 20px;
  font-weight: 300;
}

.featured-content p {
  color: var(--color-text-light);
  margin-bottom: 30px;
  max-width: 500px;
}

.link-more {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
  border-bottom: 1px solid var(--color-primary);
  width: fit-content;
  padding-bottom: 2px;
}

/* --- 新闻 (News) --- */
.news-container {
  padding: 0 10%;
  margin-bottom: 100px;
}

.news-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.news-item .img-wrap {
  height: 250px;
  overflow: hidden;
}

.news-item img {
  width: 100%;
  height: 250px;
  margin-bottom: 20px;
  transition: transform 0.3s ease;
}

.news-item:hover img {
  transform: scale(1.05);
}

.news-date {
  font-size: 12px;
  color: #999;
  margin-bottom: 10px;
  display: block;
}

.news-title {
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 10px;
}

.news-desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* --- 页脚 (Footer) --- */
footer {
  background-color: #111;
  color: #fff;
  padding: 80px 4% 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  border-bottom: 1px solid #333;
  padding-bottom: 60px;
  margin-bottom: 30px;
}

.footer-col h4 {
  font-size: 14px;
  margin-bottom: 25px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #888;
}

.footer-col ul li {
  margin-bottom: 15px;
}

.footer-col ul li a {
  font-size: 13px;
  color: #ccc;
  transition: color 0.3s ease;
}

.footer-col ul li a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: #666;
  flex-wrap: wrap;
  gap: 10px;
}

/* --- 动画 Keyframes --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- 移动端响应式 (Responsive) --- */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .logo-text {
    font-size: 16px;
  }

  .logo-img {
    height: 32px;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .featured-section {
    flex-direction: column;
  }

  .news-list {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }

  footer {
    padding: 60px 4% 30px;
  }

  .footer-grid {
    padding-bottom: 40px;
    margin-bottom: 20px;
  }

  .footer-col h4 {
    font-size: 13px;
    margin-bottom: 20px;
  }

  .footer-col ul li {
    margin-bottom: 12px;
  }

  .footer-col ul li a {
    font-size: 12px;
  }

  .footer-bottom {
    font-size: 11px;
  }
}

@media (max-width: 1024px) {
  .nav-list {
    gap: 20px;
  }

  .nav-link {
    font-size: 13px;
  }

  .dropdown-menu {
    min-width: 100px;
  }

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr 1fr;
    gap: 30px;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  footer {
    padding: 40px 4% 20px;
  }

  .footer-grid {
    padding-bottom: 30px;
    margin-bottom: 15px;
  }

  .footer-col h4 {
    font-size: 12px;
    margin-bottom: 15px;
  }

  .footer-col ul li {
    margin-bottom: 10px;
  }

  .footer-col ul li a {
    font-size: 11px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    font-size: 10px;
  }
}

@media (max-width: 360px) {
  footer {
    padding: 30px 4% 15px;
  }

  .footer-grid {
    gap: 20px;
  }

  .footer-col h4 {
    margin-bottom: 12px;
  }

  .footer-col ul li {
    margin-bottom: 8px;
  }

  .footer-col ul li a {
    font-size: 10px;
  }
}

@media (max-width: 320px) {
  .footer-grid {
    gap: 15px;
  }

  .footer-col h4 {
    font-size: 11px;
    margin-bottom: 10px;
  }

  .footer-col ul li {
    margin-bottom: 6px;
  }

  .footer-col ul li a {
    font-size: 9px;
  }

  .footer-bottom {
    font-size: 9px;
  }
}

#smooth-wrapper {
  /* width: 100%;
  overflow: hidden;
  position: fixed;
  top: 0;
  left: 0; */
}

#smooth-content {
  width: 100%;
  position: relative;
  z-index: 1;
}

/* 性能优化 */
.animated-element {
  will-change: transform, opacity;
  transform: translateZ(0);
}

/* 视差元素 */
.parallax {
  position: relative;
  z-index: 1;
}

/* --- 页面通用样式 --- */
.page-hero {
  height: 60vh;
  min-height: 400px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-content {
  text-align: center;
  color: #fff;
  z-index: 2;
}

.page-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: 4px;
}

.page-subtitle {
  font-size: 1.2rem;
  letter-spacing: 8px;
  text-transform: uppercase;
  opacity: 0.9;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 4%;
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title h2 {
  font-size: 2.5rem;
  margin-bottom: 10px;
  color: var(--color-primary);
}

.section-title p {
  font-size: 0.9rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--color-accent);
}

/* --- 公司简介页面样式 --- */
.about-intro {
  padding: 100px 0;
  background-color: var(--color-white);
}

.about-text p {
  font-size: 1rem;
  line-height: 2;
  color: var(--color-text-light);
  margin-bottom: 20px;
}

.mission-vision {
  padding: 100px 0;
  background-color: var(--color-secondary);
}

.mv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.mv-item {
  text-align: center;
  padding: 40px 30px;
  background-color: var(--color-white);
  border-radius: 8px;
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

.mv-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.mv-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 25px;
  color: var(--color-accent);
}

.mv-item h3 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--color-primary);
}

.mv-item p {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-text-light);
}

.development-history {
  padding: 100px 0;
  background-color: var(--color-white);
}

.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background-color: var(--color-accent);
}

.timeline-item {
  display: flex;
  justify-content: flex-end;
  padding-right: 50%;
  position: relative;
  margin-bottom: 50px;
}

.timeline-item:nth-child(even) {
  justify-content: flex-start;
  padding-right: 0;
  padding-left: 50%;
}

.timeline-year {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 80px;
  background-color: var(--color-accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  z-index: 2;
}

.timeline-content {
  padding: 30px;
  background-color: var(--color-secondary);
  border-radius: 8px;
  max-width: 350px;
}

.timeline-item:nth-child(even) .timeline-content {
  padding-left: 45px;
  padding-right: 20px;
}


.timeline-content h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: var(--color-primary);
}

.timeline-content p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-light);
}

.stats-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, #333 100%);
  color: #fff;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
}

.stat-item {
  padding: 20px;
}

.stat-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.stat-label {
  font-size: 1rem;
  opacity: 0.8;
  letter-spacing: 1px;
}

/* --- 企业文化页面样式 --- */
.culture-intro {
  padding: 100px 0;
  background-color: var(--color-white);
}
.about-content,
.culture-content,
.strength-content,
.responsibility-content {
  position: relative;
  display: grid;
  min-height: 400px;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.culture-text p {
  font-size: 1rem;
  line-height: 2;
  color: var(--color-text-light);
  margin-bottom: 20px;
}
.about-image,
.culture-image,
.strength-image,
.responsibility-image {
  width: calc((100% - 60px) / 2);
  height: 100%;
  min-height: 400px;
  position: absolute;
  right: 0;
  top: 0;
}
.about-image img,
.culture-image img,
.strength-image img,
.responsibility-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.culture-values {
  padding: 100px 0;
  background-color: var(--color-secondary);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

.value-card {
  background-color: var(--color-white);
  padding: 40px;
  border-radius: 8px;
  text-align: center;
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

.value-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.value-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 20px;
  color: var(--color-accent);
}

.value-card h3 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--color-primary);
}

.value-card p {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-text-light);
}

.culture-spirit {
  padding: 100px 0;
  background-color: var(--color-white);
}

.spirit-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.spirit-item {
  text-align: center;
  padding: 30px 20px;
  border: 2px solid var(--color-secondary);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.spirit-item:hover {
  border-color: var(--color-accent);
  background-color: var(--color-secondary);
}

.spirit-item h3 {
  font-size: 1.5rem;
  margin-bottom: 10px;
  color: var(--color-accent);
}

.spirit-item p {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* --- 企业实力页面样式 --- */
.strength-intro {
  padding: 100px 0;
  background-color: var(--color-white);
}

.strength-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.strength-text p {
  font-size: 1rem;
  line-height: 2;
  color: var(--color-text-light);
  margin-bottom: 20px;
}


.strength-areas {
  padding: 100px 0;
  background-color: var(--color-secondary);
}

.areas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.area-card {
  background-color: var(--color-white);
  padding: 40px 30px;
  border-radius: 8px;
  text-align: center;
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

.area-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.area-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 20px;
  color: var(--color-accent);
}

.area-card h3 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--color-primary);
}

.area-card p {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-text-light);
}

.strength-achievements {
  padding: 100px 0;
  background-color: var(--color-white);
}

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

.achievement-item {
  display: flex;
  gap: 30px;
  padding: 30px;
  background-color: var(--color-secondary);
  border-radius: 8px;
  align-items: center;
}

.achievement-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  min-width: 100px;
}

.achievement-content h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: var(--color-primary);
}

.achievement-content p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-light);
}

/* --- 社会责任页面样式 --- */
.responsibility-intro {
  padding: 100px 0;
  background-color: var(--color-white);
}

.responsibility-text p {
  font-size: 1rem;
  line-height: 2;
  color: var(--color-text-light);
  margin-bottom: 20px;
}

.responsibility-areas {
  padding: 100px 0;
  background-color: var(--color-secondary);
}

.responsibility-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

.responsibility-card {
  background-color: var(--color-white);
  padding: 40px;
  border-radius: 8px;
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

.responsibility-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.responsibility-icon {
  width: 70px;
  height: 70px;
  margin-bottom: 20px;
  color: var(--color-accent);
}

.responsibility-card h3 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--color-primary);
}

.responsibility-card p {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-text-light);
}

.responsibility-cases {
  padding: 100px 0;
  background-color: var(--color-white);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.case-item {
  background-color: var(--color-white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.case-item:hover {
  transform: translateY(-10px);
}

.case-image {
  height: 200px;
  overflow: hidden;
}

.case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.case-item:hover .case-image img {
  transform: scale(1.1);
}

.case-content {
  padding: 25px;
}

.case-content h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--color-primary);
}

.case-content p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-text-light);
}

/* --- 响应式设计 --- */
@media (max-width: 1024px) {
  .about-content,
  .culture-content,
  .strength-content,
  .responsibility-content {
    grid-template-columns: 1fr;
  }

  .mv-grid,
  .values-grid,
  .areas-grid,
  .achievements-grid,
  .responsibility-grid,
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .spirit-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .page-title {
    font-size: 2.5rem;
  }

  .page-subtitle {
    font-size: 0.9rem;
    letter-spacing: 4px;
  }

  .section-title h2 {
    font-size: 2rem;
  }

  .mv-grid,
  .values-grid,
  .areas-grid,
  .achievements-grid,
  .responsibility-grid,
  .cases-grid,
  .spirit-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .timeline::before {
    left: 20px;
  }

  .timeline-item,
  .timeline-item:nth-child(even) {
    padding-left: 60px;
    padding-right: 0;
    justify-content: flex-start;
  }

  .timeline-year {
    left: 20px;
    width: 60px;
    height: 60px;
    font-size: 1rem;
  }

  .timeline-content {
    max-width: 100%;
  }

  .achievement-item {
    flex-direction: column;
    text-align: center;
  }

  .stat-number {
    font-size: 2.5rem;
  }
}

/* --- 案例展示模块 (Cases Showcase) --- */
.cases-showcase {
  padding-bottom: 100px;
  background-color: var(--color-white);
}

.cases-tabs {
  margin-top: 60px;
}

.tabs-header {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 50px;
  border-bottom: 2px solid var(--color-secondary);
  padding-bottom: 20px;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text-light);
  transition: all 0.3s ease;
  position: relative;
}

.tab-btn::after {
  content: "";
  position: absolute;
  bottom: -22px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: transparent;
  transition: background-color 0.3s ease;
}

.tab-btn:hover {
  color: var(--color-primary);
}

.tab-btn:hover::after {
  background-color: var(--color-accent);
}

.tab-btn.active {
  color: var(--color-primary);
  font-weight: 600;
}

.tab-btn.active::after {
  background-color: var(--color-accent);
}

.tab-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  transition: color 0.3s ease;
}

.tab-btn:hover .tab-icon,
.tab-btn.active .tab-icon {
  color: var(--color-accent);
}

.tabs-content {
  position: relative;
}

.tab-pane {
  display: none;
  animation: fadeIn 0.4s ease;
}

.tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-bottom: 40px;
}

.case-card {
  background-color: var(--color-white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.case-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.case-image {
  position: relative;
  height: 250px;
  overflow: hidden;
}

.case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.case-card:hover .case-image img {
  transform: scale(1.1);
}

.case-overlay {
  position: absolute;
  top: 20px;
  right: 20px;
  background-color: var(--color-accent);
  color: var(--color-white);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  opacity: 0;
  transform: translateY(-10px);
  transition: all 0.3s ease;
}

.case-card:hover .case-overlay {
  opacity: 1;
  transform: translateY(0);
}

.case-tag {
  text-transform: uppercase;
  letter-spacing: 1px;
}

.case-info {
  padding: 25px;
}

.case-info h3 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--color-primary);
  font-weight: 500;
}

.case-info p {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-text-light);
}

@media (max-width: 1024px) {
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .cases-showcase {
    padding-bottom: 60px;
  }

  .cases-tabs {
    margin-top: 40px;
  }

  .tabs-header {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    gap: 8px;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--color-secondary);
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
  }

  .tabs-header::-webkit-scrollbar {
    display: none;
  }

  .tab-btn {
    flex: 0 0 auto;
    min-width: 44px;
    min-height: 44px;
    padding: 12px 20px;
    font-size: 14px;
    scroll-snap-align: start;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
  }

  .tab-btn::after {
    bottom: -16px;
    height: 2px;
  }

  .tab-icon {
    width: 20px;
    height: 20px;
  }

  .tab-icon svg {
    width: 20px;
    height: 20px;
  }

  .cases-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 30px;
  }

  .case-card {
    border-radius: 6px;
  }

  .case-image {
    height: 200px;
  }

  .case-overlay {
    top: 12px;
    right: 12px;
    padding: 6px 12px;
    font-size: 11px;
    border-radius: 16px;
  }

  .case-info {
    padding: 20px;
  }

  .case-info h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
  }

  .case-info p {
    font-size: 0.9rem;
    line-height: 1.6;
  }
}

@media (max-width: 480px) {
  .cases-showcase {
    padding-bottom: 40px;
  }

  .section-title {
    margin: 30px 0 30px;
  }

  .section-title h2 {
    font-size: 1.5rem;
  }

  .section-title p {
    font-size: 0.8rem;
  }

  .tabs-header {
    gap: 6px;
    margin-bottom: 25px;
    padding-bottom: 12px;
  }

  .tab-btn {
    padding: 10px 16px;
    font-size: 13px;
  }

  .tab-btn::after {
    bottom: -13px;
  }

  .cases-grid {
    gap: 16px;
  }

  .case-image {
    height: 180px;
  }

  .case-overlay {
    top: 10px;
    right: 10px;
    padding: 5px 10px;
    font-size: 10px;
  }

  .case-info {
    padding: 16px;
  }

  .case-info h3 {
    font-size: 1rem;
    margin-bottom: 10px;
  }

  .case-info p {
    font-size: 0.85rem;
    line-height: 1.5;
  }
}

@media (max-width: 360px) {
  .tab-btn {
    padding: 10px 14px;
    font-size: 12px;
  }

  .tab-icon {
    width: 18px;
    height: 18px;
  }

  .tab-icon svg {
    width: 18px;
    height: 18px;
  }
}

/* --- 常见问题 (FAQ) --- */
.faq-section {
  padding: 80px 0;
  background-color: var(--color-white);
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--color-white);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  margin-bottom: 30px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
}

.faq-question {
  padding: 25px 30px;
  background: linear-gradient(135deg, var(--color-secondary) 0%, #fff 100%);
  border-bottom: 1px solid var(--color-secondary);
  position: relative;
}

.faq-question h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
  color: var(--color-primary);
  font-weight: 500;
}

.faq-date {
  font-size: 12px;
  color: var(--color-text-light);
  display: block;
  margin-top: 5px;
}

.faq-answer {
  padding: 25px 30px;
  background-color: var(--color-white);
}

.faq-answer p {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 15px;
}

.faq-answer ul {
  margin-top: 15px;
  padding-left: 20px;
}

.faq-answer ul li {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 10px;
  list-style-type: disc;
}

.strength-intro {
  padding-left: 40px;
  padding-right: 40px;
}
@media (max-width: 768px) {
  header{
    background: rgba(255, 255, 255, 0.8);
    color: var(--color-primary);
  }
  .faq-section {
    padding: 60px 0;
  }

  .faq-list {
    max-width: 100%;
  }

  .faq-item {
    margin-bottom: 20px;
  }

  .faq-question {
    padding: 20px;
  }

  .faq-question h3 {
    font-size: 1.1rem;
  }

  .faq-answer {
    padding: 20px;
  }

  .faq-answer p {
    font-size: 0.9rem;
  }

  .faq-answer ul li {
    font-size: 0.9rem;
  }

  .about-intro,
  .culture-intro,
  .strength-intro,
  .responsibility-intro {
    padding: 40px 0;
  }
  .strength-intro {
    padding-left: 20px;
    padding-right: 20px;
  }
}

@media (max-width: 480px) {
  .faq-question {
    padding: 15px 20px;
  }

  .faq-question h3 {
    font-size: 1rem;
  }

  .faq-answer {
    padding: 15px 20px;
  }

  .faq-answer p {
    font-size: 0.85rem;
  }

  .faq-answer ul li {
    font-size: 0.85rem;
  }
}

/* --- PDF列表 (PDF List) --- */
.pdf-section {
  padding: 80px 0;
  background-color: var(--color-white);
}

.pdf-list {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.pdf-item {
  background-color: var(--color-white);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  padding: 25px;
  transition: all 0.3s ease;
  border: 1px solid var(--color-secondary);
}

.pdf-item:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
  border-color: var(--color-accent);
}

.pdf-header {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 15px;
}

.pdf-icon {
  /* width: 40px; */
  height: 40px;
  background-color: #e74c3c;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
  font-weight: bold;
  padding: 0 8px;
}

.pdf-title {
  flex: 1;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-primary);
}

.pdf-description {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-text-light);
  margin-bottom: 20px;
}

.pdf-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 20px;
}

.pdf-meta-item {
  display: flex;
  align-items: center;
  gap: 5px;
}

.pdf-actions {
  display: flex;
  gap: 10px;
}

.pdf-btn {
  flex: 1;
  padding: 12px 20px;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
}

.pdf-btn-preview {
  background-color: var(--color-secondary);
  color: var(--color-primary);
}

.pdf-btn-preview:hover {
  background-color: var(--color-accent);
  color: white;
}

.pdf-btn-download {
  background-color: var(--color-primary);
  color: white;
}

.pdf-btn-download:hover {
  background-color: var(--color-accent);
}

@media (max-width: 768px) {
  .pdf-section {
    padding: 60px 0;
  }

  .pdf-list {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .pdf-item {
    padding: 20px;
  }

  .pdf-title {
    font-size: 1rem;
  }

  .pdf-description {
    font-size: 0.85rem;
  }
}

@media (max-width: 480px) {
  .pdf-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .pdf-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .pdf-actions {
    flex-direction: column;
  }

  .pdf-btn {
    width: 100%;
  }
}