/* =========================================================
   佛山宏锋有限公司 · 官网首页完整样式表
   弹性布局版：display:flex + rem 单位（1px = 1rem）
   设计感升级：一级果冻磁吸滑块 + 二级 3D 级联冰晶下拉菜单
   ========================================================= */
@charset "UTF-8";

/* 1:1 换算：1rem = 1px */
html {
  font-size: 1px;
}

:root {
  --red: #f12a09;
  --red-glow: rgba(241, 42, 9, 0.25);
  --red-soft: rgba(241, 42, 9, 0.08);
  --white: #FFFFFF;
  --ink: #1A1A1A;
  --ink-2: #2A2A2A;
  --gray-bg: #F7F7F7;
  --gray: #8A8A8A;
  --line: #E4E4E4;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --font-sans: "Inter", "SF Pro Display", "Helvetica Neue", -apple-system,
    BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
}

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

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

body {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 16rem;
  color: var(--ink);
  background: var(--white);
  letter-spacing: 0.02em;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body.is-loaded {
  opacity: 1;
}

body.no-scroll {
  overflow: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
}

h1, h2, h3 {
  text-wrap: balance;
}

section[id], footer[id] {
  scroll-margin-top: 76rem;
}

::selection {
  background: rgba(241, 42, 9, 0.18);
  color: #1a1a1a;
}

/* ---------------------------------------------------------
   加载动画
   --------------------------------------------------------- */
.loader {
  position: fixed;
  inset: 0;
  background: #fff;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-svg {
  width: 54rem;
  height: 54rem;
}

.loader-path {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: drawLogo 1.2s var(--ease) forwards;
}

@keyframes drawLogo {
  to {
    stroke-dashoffset: 0;
  }
}

/* ---------------------------------------------------------
   自定义光标
   --------------------------------------------------------- */
.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 8rem;
  height: 8rem;
  border-radius: 50%;
  background: var(--red);
  pointer-events: none;
  z-index: 999;
  opacity: 0;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s ease;
}

.cursor-dot.active {
  opacity: 1;
}

body.cursor-active .hero,
body.cursor-active .manufacturing {
  cursor: none;
}

/* ---------------------------------------------------------
   顶栏导航（弹性布局）- 优化版
   --------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: transparent;
  transition: background 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              box-shadow 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              backdrop-filter 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24rem;
  padding: 0 48rem;
  height: 80rem;
  transition: height 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              padding 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.header.scrolled .header-inner {
  padding: 0 48rem;
  height: 64rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12rem;
  color: #fff;
  transition: color 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  white-space: nowrap;
  flex-shrink: 0;
}

.brand-logo {
  width: 26rem;
  height: 26rem;
  color: #fff;
  transition: color 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  flex: 0 0 auto;
}

/* ===== Logo 容器 ===== */
.brand-logo-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 50rem;
  width: 160rem;
  flex-shrink: 0;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
  place-items: center;
}

/* ===== Logo 图片 - 用 Grid 重叠 ===== */
.brand-logo-wrapper .brand-logo-img {
  grid-column: 1;
  grid-row: 1;
  height: 100%;
  width: 100%;
  max-height: 50rem;
  max-width: 160rem;
  object-fit: contain;
  transition: opacity 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: opacity, transform;
  display: block !important;
}

/* 默认 Logo - 显示 */
.brand-logo-wrapper .brand-logo-img.logo-default {
  opacity: 1;
  transform: scale(1);
  z-index: 2;
}

/* 滚动 Logo - 隐藏 */
.brand-logo-wrapper .brand-logo-img.logo-scrolled {
  opacity: 0;
  transform: scale(0.92);
  z-index: 1;
}

/* 滚动后 Logo 切换 */
.header.scrolled .brand-logo-wrapper .brand-logo-img.logo-default {
  opacity: 0;
  transform: scale(0.92);
  z-index: 1;
}

.header.scrolled .brand-logo-wrapper .brand-logo-img.logo-scrolled {
  opacity: 1;
  transform: scale(1);
  z-index: 2;
}

/* 无滚动Logo时保持默认显示 */
.brand-logo-wrapper:not(:has(.logo-scrolled)) .brand-logo-img.logo-default {
  opacity: 1 !important;
  transform: scale(1) !important;
  z-index: 2 !important;
}

/* SVG Logo（降级） */
.brand-logo-wrapper .brand-logo {
  grid-column: 1;
  grid-row: 1;
  width: 26rem;
  height: 26rem;
  color: #fff;
  transition: color 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.brand-name {
  font-weight: 300;
  font-size: 16rem;
  letter-spacing: 1rem;
  white-space: nowrap;
}

.nav {
  display: flex;
  justify-content: center;
}

/* =========================================================
   一级导航：磁吸跟随滑轨容器与交互滑块
   ========================================================= */
.nav-list {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12rem;
  list-style: none;
}

/* 确保 li 内容层级高于背景滑块 */
.nav-list > li {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
}

/* JS 动态生成的磁吸胶囊滑块 */
.nav-pill-indicator {
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  border-radius: 8rem;
  background: var(--red);
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 6rem 20rem rgba(241, 42, 9, 0.45), 0 0 10rem rgba(241, 42, 9, 0.3);
  pointer-events: none;
  opacity: 0;
  overflow: hidden;
  transition: transform 0.42s cubic-bezier(0.34, 1.56, 0.64, 1),
              width 0.42s cubic-bezier(0.34, 1.56, 0.64, 1),
              opacity 0.25s ease,
              scale 0.15s ease;
  z-index: 0;
  animation: pillGlow 2.5s infinite alternate ease-in-out;
}

/* 流光扫过 */
.nav-pill-indicator::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -150%;
  width: 80%;
  height: 200%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.45) 50%,
    transparent 100%
  );
  transform: rotate(25deg);
  animation: pillShimmer 3.5s infinite ease-in-out;
}

/* 按压形变 */
.nav-pill-indicator.is-pressed {
  scale: 0.93;
}

@keyframes pillShimmer {
  0%, 60% { left: -150%; }
  100% { left: 200%; }
}

@keyframes pillGlow {
  0% {
    box-shadow: 0 4rem 14rem rgba(241, 42, 9, 0.4), 0 0 6rem rgba(241, 42, 9, 0.2);
  }
  100% {
    box-shadow: 0 8rem 26rem rgba(241, 42, 9, 0.65), 0 0 14rem rgba(241, 42, 9, 0.5);
  }
}

/* 一级导航文字 */
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 18rem 20rem;
  font-size: 17rem;
  font-weight: 300;
  letter-spacing: 1rem;
  color: rgba(255, 255, 255, 0.88);
  z-index: 1;
  transition: color 0.3s var(--ease), text-shadow 0.3s var(--ease);
}

.nav-link:hover,
.nav-link.active {
  color: #FFFFFF !important;
  text-shadow: 0 0 10rem rgba(255, 255, 255, 0.4);
}

/* 页面滚动后（白底背景适配） */
.header.scrolled .nav-link {
  color: var(--ink);
}

.header.scrolled .nav-link:hover,
.header.scrolled .nav-link.active {
  color: #FFFFFF !important;
  text-shadow: none;
}
/* ==================== 在此处追加以下代码 ==================== */
/* 当鼠标划入导航区域、滑块移向其他菜单时，让非悬停的 active 项恢复深色文字 */
.header.scrolled .nav-list:hover .nav-link.active:not(:hover) {
  color: var(--ink) !important;
}
/* ============================================================ */

.header.scrolled .nav-pill-indicator {
  background: var(--red);
  border-color: rgba(241, 42, 9, 0.2);
  box-shadow: 0 4rem 16rem rgba(241, 42, 9, 0.35);
}
.header.scrolled .nav-pill-indicator {
  background: var(--red);
  border-color: rgba(241, 42, 9, 0.2);
  box-shadow: 0 4rem 16rem rgba(241, 42, 9, 0.35);
}

/* 二级菜单触发明区域 */
.has-drop {
  position: relative;
}

.has-drop::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  height: 18rem;
}

/* =========================================================
   二级下拉菜单升级版：3D Perspective 级联错落 + 悬浮指示
   ========================================================= */
.drop {
  position: absolute;
  top: calc(100% + 14rem);
  left: 50%;
  min-width: 190rem;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 20rem 50rem rgba(0, 0, 0, 0.1), 
              0 4rem 16rem rgba(241, 42, 9, 0.08),
              inset 0 1rem 0 rgba(255, 255, 255, 0.9);
  padding: 8rem;
  border-radius: 14rem;
  opacity: 0;
  visibility: hidden;
  perspective: 1000px;
  transform-origin: top center;
  transform: translateX(-50%) translateY(16rem) rotateX(-12deg) scale(0.94);
  transition: opacity 0.38s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.38s cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0.38s;
  pointer-events: none;
}

/* 顶部小三角气泡连接针 */
.drop::before {
  content: "";
  position: absolute;
  top: -6rem;
  left: 50%;
  width: 12rem;
  height: 12rem;
  background: rgba(255, 255, 255, 0.86);
  border-left: 1px solid rgba(255, 255, 255, 0.8);
  border-top: 1px solid rgba(255, 255, 255, 0.8);
  transform: translateX(-50%) rotate(45deg);
  border-top-left-radius: 3rem;
}

/* 展开激活状态 */
.has-drop:hover .drop,
.has-drop:focus-within .drop {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0) rotateX(0deg) scale(1);
  pointer-events: auto;
}

/* 菜单列表项基础样式 */
.drop a {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11rem 16rem 11rem 11rem;
  font-size: 15rem;
  font-weight: 300;
  letter-spacing: 0.5rem;
  color: #2A2A2A;
  border-radius: 9rem;
  margin: 3rem 0;
  background: transparent;
  opacity: 0;
  transform: translateY(12rem);
  transition: color 0.3s ease, 
              background-color 0.3s ease, 
              transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.3s ease;
  overflow: hidden;
}

/* 展开时的级联延迟动画 (Stagger Animation) */
.has-drop:hover .drop a {
  opacity: 1;
  transform: translateY(0);
}
.has-drop:hover .drop a:nth-child(1) { transition-delay: 0.04s; }
.has-drop:hover .drop a:nth-child(2) { transition-delay: 0.08s; }
.has-drop:hover .drop a:nth-child(3) { transition-delay: 0.12s; }
.has-drop:hover .drop a:nth-child(4) { transition-delay: 0.16s; }
.has-drop:hover .drop a:nth-child(5) { transition-delay: 0.20s; }

/* 左侧吸附红色流光竖条 */
.drop a::before {
  content: "";
  position: absolute;
  left: 5rem;
  top: 50%;
  width: 4rem;
  height: 16rem;
  border-radius: 4rem;
  background: var(--red);
  box-shadow: 0 0 10rem var(--red);
  opacity: 0;
  transform: translateY(-50%) scaleY(0);
  transition: opacity 0.28s ease, transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* 右侧动态箭头 → 指示器 */
.drop a::after {
  content: "→";
  font-family: var(--font-sans);
  font-size: 14rem;
  font-weight: 500;
  color: var(--red);
  opacity: 0;
  transform: translateX(-10rem);
  transition: opacity 0.28s ease, transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 悬停微交互效果 */
.drop a:hover {
  color: var(--red);
  background: linear-gradient(90deg, rgba(241, 42, 9, 0.09) 0%, rgba(241, 42, 9, 0.01) 100%);
  transform: translateX(4rem);
}

.drop a:hover::before {
  opacity: 1;
  transform: translateY(-50%) scaleY(1);
}

.drop a:hover::after {
  opacity: 1;
  transform: translateX(0);
}

/* ---------------------------------------------------------
   右侧功能区与搜索遮罩
   --------------------------------------------------------- */
.header-right {
  display: flex;
  align-items: center;
  gap: 22rem;
  color: #fff;
}

.header-tel {
  display: flex;
  align-items: center;
  gap: 8rem;
  font-size: 27rem;
  font-weight: 700;
  letter-spacing: 0.5rem;
  color: #fff;
  transition: color 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.header-tel:hover {
  color: var(--red);
}

.tel-icon {
  width: 28rem;
  height: 28rem;
}

.header.scrolled .header-tel,
.header.scrolled .brand {
  color: var(--ink);
}

.header.scrolled .brand-logo {
  color: var(--red);
}

/* 搜索按钮 */
.search-toggle {
  background: none;
  border: 0;
  color: #fff;
  cursor: pointer;
  padding: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  font-size: 18rem;
}

.header.scrolled .search-toggle {
  color: var(--ink);
}

.search-toggle:hover {
  color: var(--red);
}

/* 搜索遮罩 - 全屏版 */
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s var(--ease), visibility 0.5s var(--ease);
}

.search-overlay.active {
  opacity: 1;
  visibility: visible;
}

.search-close {
  position: fixed;
  top: 30rem;
  right: 40rem;
  background: none;
  border: 0;
  color: rgba(255, 255, 255, 0.4);
  font-size: 40rem;
  font-weight: 300;
  cursor: pointer;
  transition: color 0.3s var(--ease), transform 0.3s var(--ease);
  z-index: 1000;
  line-height: 1;
}

.search-close:hover {
  color: #fff;
  transform: rotate(90deg);
}

.search-modal {
  width: 90%;
  max-width: 800rem;
  padding: 20rem;
  transform: translateY(30rem);
  transition: transform 0.5s var(--ease);
}

.search-overlay.active .search-modal {
  transform: translateY(0);
}

.search-form {
  display: flex;
  gap: 16rem;
  border-bottom: 2rem solid rgba(255, 255, 255, 0.10);
  padding-bottom: 20rem;
  position: relative;
}

.search-form::after {
  content: "";
  position: absolute;
  bottom: -2rem;
  left: 0;
  width: 0;
  height: 2rem;
  background: var(--red);
  transition: width 0.6s var(--ease);
}

.search-overlay.active .search-form::after {
  width: 100%;
}

.search-input {
  flex: 1;
  background: transparent;
  border: 0;
  padding: 20rem 0;
  font-size: 36rem;
  color: #fff;
  outline: none;
  font-weight: 300;
  letter-spacing: 1rem;
}

.search-input::placeholder {
  color: rgba(255, 255, 255, 0.2);
  font-weight: 200;
}

.search-submit {
  background: var(--red);
  border: 0;
  color: #fff;
  padding: 18rem 48rem;
  border-radius: 8rem;
  font-size: 18rem;
  font-weight: 500;
  letter-spacing: 1.5rem;
  cursor: pointer;
  transition: background 0.3s var(--ease), transform 0.3s var(--ease);
  flex-shrink: 0;
}

.search-submit:hover {
  background: #c41a0a;
  transform: scale(1.03);
}

.search-submit:active {
  transform: scale(0.96);
}

.search-hint {
  text-align: center;
  margin-top: 28rem;
  font-size: 14rem;
  color: rgba(255, 255, 255, 0.15);
  letter-spacing: 2rem;
  font-weight: 300;
}

.mobile-search {
  margin-top: 24rem;
  width: 80%;
  max-width: 320rem;
}

.mobile-search-form {
  display: flex;
  gap: 8rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4rem;
  padding: 4rem;
}

.mobile-search-form input {
  flex: 1;
  background: transparent;
  border: 0;
  padding: 10rem 14rem;
  color: #fff;
  font-size: 15rem;
  outline: none;
}

.mobile-search-form input::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.mobile-search-form button {
  background: var(--red);
  border: 0;
  color: #fff;
  padding: 8rem 18rem;
  border-radius: 4rem;
  cursor: pointer;
  font-size: 13rem;
  flex-shrink: 0;
}

.lang {
  background: none;
  border: 1rem solid currentColor;
  color: inherit;
  padding: 6rem 12rem;
  font-size: 13rem;
  letter-spacing: 1rem;
  cursor: pointer;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.lang:hover {
  color: var(--red);
}

/* 滚动后的 Header 背景 */
.header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px) saturate(1.1);
  -webkit-backdrop-filter: blur(16px) saturate(1.1);
  box-shadow: 0 2px 40px rgba(0, 0, 0, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

/* 汉堡按钮 */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5rem;
  width: 34rem;
  height: 34rem;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 4rem;
}

.burger span {
  display: block;
  height: 1.4rem;
  width: 100%;
  background: #fff;
  transition: background 0.4s var(--ease), transform 0.4s var(--ease);
}

.header.scrolled .burger span {
  background: var(--ink);
}

.burger.open span:nth-child(1) {
  transform: translateY(6.4rem) rotate(45deg);
}

.burger.open span:nth-child(2) {
  opacity: 0;
}

.burger.open span:nth-child(3) {
  transform: translateY(-6.4rem) rotate(-45deg);
}

/* ---------------------------------------------------------
   移动端全屏导航
   --------------------------------------------------------- */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: rgba(18, 18, 18, 0.98);
  z-index: 300;
  display: flex;
  /* flex-direction: column; */
  /* align-items: center; */
  /* justify-content: center; */
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.45s var(--ease), visibility 0.45s var(--ease);
}

.mobile-nav.open {
  opacity: 1;
  visibility: visible;
}

.mobile-close {
  position: absolute;
  top: 22rem;
  right: 26rem;
  background: none;
  border: 0;
  color: #fff;
  font-size: 38rem;
  font-weight: 300;
  cursor: pointer;
}

.mobile-nav nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8rem;
}

.mobile-nav nav a {
  color: rgba(255, 255, 255, 0.86);
  font-size: 24rem;
  font-weight: 300;
  letter-spacing: 3rem;
  padding: 10rem 24rem;
  transition: color 0.3s var(--ease);
}

.mobile-nav nav a:hover {
  color: var(--red);
}

.mobile-tel {
  margin-top: 36rem;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 1rem;
  font-size: 15rem;
}

/* ---------------------------------------------------------
   移动端响应式适配 (<= 768px)
   --------------------------------------------------------- */
@media (max-width: 768px) {
  .header-inner {
    padding: 10rem 20rem;
    height: 70rem;
  }
  
  .header.scrolled .header-inner {
    padding: 8rem 20rem;
    height: 60rem;
  }

  .brand-logo-wrapper {
    height: 38rem;
    width: 120rem;
  }

  .brand-logo-wrapper .brand-logo-img {
    max-height: 38rem;
    max-width: 120rem;
  }

  .nav,
  .header-tel {
    display: none;
  }

  .burger {
    display: flex;
  }
}

@media (max-width: 480px) {
  .brand-logo-wrapper {
    height: 32rem;
    width: 100rem;
  }

  .brand-logo-wrapper .brand-logo-img {
    max-height: 32rem;
    max-width: 100rem;
  }
}

/* ---------------------------------------------------------
   Hero
   --------------------------------------------------------- */
.hero {
  position: relative;
  height: 100vh;
  height: 100svh;
  min-height: 640rem;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  background: var(--ink);
}

.hero-slides {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero-slide {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0;
  transform: translateX(6%) scale(0.98);
  transition: opacity 1s ease, transform 1.1s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
  pointer-events: none;
}

.hero-slide.is-active {
  z-index: 1;
  opacity: 1;
  transform: translateX(0) scale(1);
}

.hero-media {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.1);
  will-change: transform;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1100rem;
  padding: 0 24rem;
  perspective: 1000rem;
  will-change: opacity, transform;
}

.hero-eyebrow {
  font-size: 14rem;
  font-weight: 300;
  letter-spacing: 4rem;
  color: rgba(255, 255, 255, 0.72);
}

.hero-title {
  margin: 18rem 0 22rem;
  font-size: clamp(48rem, 8vw, 112rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.04;
  color: #fff;
}

.hero-sub {
  font-size: clamp(14rem, 1.2vw, 21rem);
  font-weight: 300;
  letter-spacing: 2rem;
  color: rgba(255, 255, 255, 0.78);
}

.hero-cta {
  display: inline-block;
  margin-top: 44rem;
  padding: 14rem 48rem;
  border: 1rem solid rgba(255, 255, 255, 0.8);
  border-radius: 3rem;
  background: transparent;
  color: #fff;
  font-size: 15rem;
  font-weight: 300;
  letter-spacing: 3rem;
  transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.hero-cta:hover {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
}

.hero-scroll {
  position: absolute;
  bottom: 36rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7rem;
  z-index: 2;
  animation: float 2.6s ease-in-out infinite;
}

.scroll-line {
  width: 1rem;
  height: 30rem;
  background: rgba(255, 255, 255, 0.7);
}

.scroll-dot {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: #fff;
}

.hero-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48rem;
  height: 48rem;
  border-radius: 50%;
  border: 1rem solid rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.12);
  -webkit-backdrop-filter: blur(8rem);
  backdrop-filter: blur(8rem);
  color: #fff;
  font-size: 20rem;
  line-height: 1;
  cursor: pointer;
  z-index: 3;
  transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.hero-arrow:hover {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
}

.hero-arrow.prev {
  left: 32rem;
}

.hero-arrow.next {
  right: 32rem;
}

.hero-dots {
  position: absolute;
  bottom: 84rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 12rem;
  z-index: 3;
}

.hero-dot {
  width: 8rem;
  height: 8rem;
  border-radius: 50%;
  border: 1rem solid rgba(255, 255, 255, 0.55);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.hero-dot.active {
  background: var(--red);
  border-color: var(--red);
  transform: scale(1.15);
}

@keyframes float {
  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(-8rem);
  }
}

body.is-loaded .hero-eyebrow,
body.is-loaded .hero-title,
body.is-loaded .hero-sub,
body.is-loaded .hero-cta {
  animation: heroFadeIn 1s var(--ease) both;
}

body.is-loaded .hero-eyebrow {
  animation-delay: 0.05s;
}

body.is-loaded .hero-title {
  animation-delay: 0.16s;
}

body.is-loaded .hero-sub {
  animation-delay: 0.3s;
}

body.is-loaded .hero-cta {
  animation-delay: 0.44s;
}

@keyframes heroFadeIn {
  from {
    opacity: 0;
    transform: translateY(26rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 轮播切换时的 Hero 3D 文字进入动效（仅 Hero 区） */
.hero-content.hero-text-enter .hero-eyebrow,
.hero-content.hero-text-enter .hero-title,
.hero-content.hero-text-enter .hero-sub,
.hero-content.hero-text-enter .hero-cta {
  animation: hero3DIn 0.9s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.hero-content.hero-text-enter .hero-eyebrow {
  animation-delay: 0.04s;
}

.hero-content.hero-text-enter .hero-title {
  animation-delay: 0.12s;
}

.hero-content.hero-text-enter .hero-sub {
  animation-delay: 0.22s;
}

.hero-content.hero-text-enter .hero-cta {
  animation-delay: 0.32s;
}

@keyframes hero3DIn {
  from {
    opacity: 0;
    transform: translateZ(-60rem) translateY(46rem) rotateX(32deg);
  }
  to {
    opacity: 1;
    transform: translateZ(0) translateY(0) rotateX(0);
  }
}

/* ---------------------------------------------------------
   通用 Section — 统一间距
   --------------------------------------------------------- */
.section {
  padding: 100rem 6vw;
}
.sectionab {
  padding: 0  6vw;
}
.section-head {
  margin-bottom: 52rem;
}

.section-head.center {
  text-align: center;
}

.section-title {
  font-size: clamp(32rem, 3vw, 56rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.1;
  color: var(--ink);
}

.section-line {
  display: block;
  width: 40rem;
  height: 2rem;
  background: var(--red);
  margin: 18rem 0;
}

.section-head.center .section-line {
  margin-left: auto;
  margin-right: auto;
}

.section-en {
  font-size: 13rem;
  font-weight: 300;
  letter-spacing: 4rem;
  color: #999;
  text-transform: uppercase;
}

/* 超宽屏下统一内容节奏 */
.section-head,
.business-grid,
.advantages-grid,
.projects-grid,
.marquee,
.news-layout,
.news-footer,
.footer-grid {
  max-width: 1680rem;
  margin-left: auto;
  margin-right: auto;
}

/* ===== 各板块单独间距微调 ===== */
#business {
  padding-top: 60rem;
}

#advantages {
  padding-top: 80rem;
  padding-bottom: 180rem;
}

#about {
  padding: 80rem 6vw;
}

#history {
  padding-top: 100rem;
  padding-bottom: 80rem;
}

#projects {
  padding-top: 100rem;
  padding-bottom: 80rem;
}

#manufacturing {
  padding: 0;
  height: 100vh;
  height: 100svh;
  min-height: 640rem;
}

#partners {
  padding-top: 80rem;
  padding-bottom: 80rem;
}

#news {
  padding-top: 80rem;
  padding-bottom: 80rem;
}

/* ---------------------------------------------------------
   滚动显现动效
   --------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(30rem);
  transition: opacity 0.9s ease-out, transform 0.9s ease-out;
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

.reveal.d1 {
  transition-delay: 0.12s;
}

.reveal.d2 {
  transition-delay: 0.24s;
}

.reveal.d3 {
  transition-delay: 0.36s;
}

.reveal.d4 {
  transition-delay: 0.48s;
}

/* ---------------------------------------------------------
   核心业务
   --------------------------------------------------------- */
.business {
  background: #fff;
}

.business-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 28rem;
}

.biz-item {
  position: relative;
  overflow: hidden;
  margin: 0;
  background: #f0f0f0;
  border-radius: 8rem;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.4s cubic-bezier(0.22, 1, 0.36, 1),
              background 0.4s ease;
  will-change: transform;
  transform: translateZ(0);
  backface-visibility: hidden;
}

.biz-item:hover {
  background: #ffffff;
  box-shadow: 0 12rem 40rem rgba(0, 0, 0, 0.10);
  transform: translateY(-4rem);
}

.biz-steel,
.biz-assembly {
  flex: 0 0 calc(32.666% - 13rem);
  height: 340rem;
}

.biz-pv {
  flex: 0 0 calc(33.666% - 18rem);
  height: 340rem;
}

.biz-aluminum {
  flex: 0 0 calc(50% - 14rem);
  height: 340rem;
  margin-left: auto;
  margin-right: auto;
}

.biz-media {
  position: absolute;
  inset: 0;
  overflow: hidden;
  transition: opacity 0.4s ease;
}

.biz-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1s ease-out;
}

.biz-media::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.52) 0%,
    rgba(0, 0, 0, 0.1) 38%,
    transparent 62%
  );
  pointer-events: none;
}

.biz-railing .biz-media::before {
  display: none;
}

.biz-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  opacity: 1;
  transition: opacity 0.5s ease;
}

.biz-item:hover .biz-media::after {
  opacity: 0;
}

.biz-info {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 36rem 32rem 28rem;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 8rem;
}

.biz-name {
  font-size: 24rem;
  font-weight: 700;
  letter-spacing: 1rem;
  color: #fff;
  text-shadow: 0 1rem 12rem rgba(0, 0, 0, 0.35);
}

.biz-sub {
  font-size: 12rem;
  font-weight: 300;
  letter-spacing: 1.5rem;
  color: rgba(255, 255, 255, 0.82);
  text-shadow: 0 1rem 8rem rgba(0, 0, 0, 0.4);
}

.biz-item:hover .biz-name {
  text-shadow: 0 1rem 16rem rgba(0, 0, 0, 0.55);
}

.biz-item:hover .biz-sub {
  text-shadow: 0 1rem 12rem rgba(0, 0, 0, 0.55);
  color: rgba(255, 255, 255, 0.95);
}

.biz-badge {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  z-index: 5;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #fff;
  font-size: 14rem;
  font-weight: 500;
  letter-spacing: 2rem;
  padding: 8rem 28rem;
  border-radius: 4rem;
  border: 1px solid rgba(255, 255, 255, 0.25);
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.22, 1, 0.36, 1),
              background 0.3s ease, border-color 0.3s ease;
  pointer-events: none;
}

.biz-item:hover .biz-badge {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
  background: var(--red);
  border-color: var(--red);
}

.biz-railing {
  position: absolute;
  right: 5%;
  bottom: 10%;
  width: 250rem;
  height: 168rem;
  z-index: 3;
  background: #fff;
  box-shadow: 0 18rem 46rem rgba(0, 0, 0, 0.16);
}

.biz-railing .biz-info {
  padding: 16rem 18rem;
  gap: 4rem;
}

.biz-railing .biz-name {
  font-size: 17rem;
  color: var(--ink);
  text-shadow: none;
}

.biz-railing .biz-sub {
  font-size: 11rem;
  color: var(--gray);
  text-shadow: none;
}

.ph-dark {
  background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
}

.ph-light {
  background: linear-gradient(135deg, #f0f0f0 0%, #e6e6e6 100%);
}

/* ---------------------------------------------------------
   核心优势
   --------------------------------------------------------- */
.advantages {
  background-image: url('../image/yousbj.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  background-repeat: no-repeat;
  position: relative;
}



.advantages .section-head,
.advantages .adv-module-wrapper {
  position: relative;
  z-index: 1;
}

.advantages-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 28rem;
}

.advantage-card {
  position: relative;
  overflow: hidden;
  flex: 0 0 calc(33.333% - 19rem);
  min-height: 340rem;
  padding: 48rem 42rem 42rem;
  background: var(--gray-bg);
  border: 1rem solid rgba(0, 0, 0, 0.04);
  border-radius: 16rem;
  transition: transform 0.5s var(--ease),
              box-shadow 0.5s var(--ease),
              border-color 0.5s ease,
              background 0.5s ease;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  cursor: default;
  will-change: transform;
  transform: translateZ(0);
  backface-visibility: hidden;
}

.advantage-card:hover {
  border-color: var(--red);
  background: #ffffff;
  box-shadow: 0 24rem 64rem rgba(196, 26, 26, 0.10);
  transform: translateY(-8rem);
}

.adv-bar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4rem;
  background: var(--red);
  opacity: 0;
  transition: opacity 0.5s ease;
}

.advantage-card:hover .adv-bar {
  opacity: 1;
}

.adv-num {
  position: absolute;
  top: -8rem;
  right: -4rem;
  font-size: 120rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  color: rgba(196, 26, 26, 0.04);
  pointer-events: none;
  user-select: none;
  transition: color 0.6s ease, transform 0.6s var(--ease);
}

.advantage-card:hover .adv-num {
  color: rgba(196, 26, 26, 0.10);
  transform: scale(1.04);
}

.adv-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  width: 72rem;
  height: 72rem;
  margin-bottom: 32rem;
  background: rgba(196, 26, 26, 0.06);
  border: 1.5rem solid rgba(196, 26, 26, 0.10);
  border-radius: 50%;
  transition: background 0.5s ease, border-color 0.5s ease, 
              transform 0.5s var(--ease), box-shadow 0.5s ease;
}

.advantage-card:hover .adv-icon-wrap {
  background: rgba(196, 26, 26, 0.10);
  border-color: var(--red);
  transform: scale(1.02);
  box-shadow: 0 0 0 12rem rgba(196, 26, 26, 0.04);
}

.adv-icon {
  width: 30rem;
  height: 30rem;
  color: var(--red);
}

.adv-icon svg {
  width: 100%;
  height: 100%;
  stroke-width: 1.6;
}

.advantage-card h3 {
  font-size: 26rem;
  font-weight: 700;
  letter-spacing: 0.5rem;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 10rem;
  transition: color 0.4s ease;
}

.advantage-card:hover h3 {
  color: var(--red);
}

.advantage-card p {
  font-size: 15rem;
  font-weight: 300;
  line-height: 1.8;
  letter-spacing: 0.5rem;
  color: var(--gray);
  max-width: 280rem;
}

.adv-highlight {
  color: var(--ink-2);
  font-weight: 500;
}

.adv-line {
  display: block;
  width: 40rem;
  height: 3rem;
  background: var(--red);
  margin-top: 18rem;
  border-radius: 2rem;
  transition: width 0.6s var(--ease), opacity 0.4s ease;
}

.advantage-card:hover .adv-line {
  width: 72rem;
}

.adv-tag {
  position: absolute;
  bottom: 42rem;
  right: 42rem;
  font-size: 11rem;
  font-weight: 500;
  letter-spacing: 2rem;
  color: rgba(196, 26, 26, 0.15);
  text-transform: uppercase;
  transition: color 0.4s ease, letter-spacing 0.4s ease;
}

.advantage-card:hover .adv-tag {
  color: rgba(196, 26, 26, 0.35);
  letter-spacing: 3rem;
}

.adv-dot {
  position: absolute;
  top: 28rem;
  left: 28rem;
  width: 6rem;
  height: 6rem;
  border-radius: 50%;
  background: rgba(196, 26, 26, 0.12);
  transition: background 0.4s ease, transform 0.4s ease;
}

.advantage-card:hover .adv-dot {
  background: var(--red);
  transform: scale(1.3);
}

/* ---------------------------------------------------------
   关于宏锋
   --------------------------------------------------------- */
#about {
  background-image: url('../image/abbj.png');
  padding: 80rem 6vw;
}

.about {
  background: #FAFAFB;
  padding: 120rem 6vw;
  position: relative;
  overflow: hidden;
}

.about-inner {
  display: flex;
  align-items: center;
  gap: 80rem;
  max-width: 1680rem;
  margin: 0 auto;
}

.about-left {
  flex: 1 1 52%;
  min-width: 0;
  position: relative;
  z-index: 2;
}

.about-right {
  flex: 1 1 48%;
  min-width: 0;
  position: relative;
  z-index: 1;
}

.about-left .section-head {
  position: relative;
  margin-bottom: 32rem;
}

.section-bg-text {
  position: absolute;
  top: -46rem;
  left: -2rem;
  font-size: 108rem;
  font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 1.5rem rgba(0, 0, 0, 0.05);
  letter-spacing: 6rem;
  pointer-events: none;
  z-index: 0;
  white-space: nowrap;
  user-select: none;
  animation: watermarkShift 10s ease-in-out infinite;
}

.section-tag {
  display: flex;
  align-items: center;
  gap: 8rem;
  margin-bottom: 10rem;
  position: relative;
  z-index: 1;
}

.tag-dot {
  width: 6rem;
  height: 6rem;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 8rem var(--red);
}

.section-en {
  font-size: 13rem;
  font-weight: 600;
  letter-spacing: 2.5rem;
  color: var(--red);
}

.section-title {
  font-size: 40rem;
  font-weight: 800;
  letter-spacing: -0.5rem;
  color: var(--ink);
  line-height: 1.2;
  position: relative;
  z-index: 1;
}

.title-dot {
  color: var(--red);
}

.about-text {
  font-size: 15rem;
  font-weight: 300;
  line-height: 2;
  color: #4A4A4A;
  max-width: 620rem;
  text-align: justify;
}

.about-btn {
  display: inline-flex;
  align-items: center;
  /* gap: 16rem; */
  margin-top: 16rem;
  padding: 12rem 24rem 12rem 30rem;
  border-radius: 50rem;
  background: #ff4e31;
  color: #ffffff;
  font-size: 14rem;
  font-weight: 400;
  letter-spacing: 1rem;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 10rem 25rem rgba(0, 0, 0, 0.1);
  position: relative;
  overflow: hidden;
}

.about-btn::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -60%;
  width: 40%;
  height: 200%;
  background: linear-gradient(
    90deg, 
    rgba(255, 255, 255, 0) 0%, 
    rgba(255, 255, 255, 0.35) 50%, 
    rgba(255, 255, 255, 0) 100%
  );
  transform: rotate(30deg);
  animation: btnShimmer 4s ease-in-out infinite;
}

.btn-arrow-box {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26rem;
  height: 26rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-arrow-box .arrow {
  display: block;
  font-size: 14rem;
  transition: transform 0.4s ease;
}

.about-btn:hover {
  background: var(--red);
  box-shadow: 0 12rem 30rem rgba(241, 42, 9, 0.35);
  transform: translateY(-3rem);
}

.about-btn:hover .btn-arrow-box {
  background: #ffffff;
  color: var(--red);
}

.about-btn:hover .arrow {
  transform: translateX(3rem);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16rem;
  margin-top: 16rem;
}

.stat-card {
  position: relative;
  background: #FFFFFF;
  padding: 22rem 20rem;
  border-radius: 16rem;
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 10rem 30rem rgba(0, 0, 0, 0.03);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s ease, border-color 0.35s ease;
  will-change: transform, box-shadow;
  overflow: hidden;
}

.stat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3rem;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}

.stat-card:hover {
  box-shadow: 0 20rem 40rem rgba(241, 42, 9, 0.12);
  border-color: rgba(241, 42, 9, 0.15);
}

.stat-card:hover::before {
  transform: scaleX(1);
}

.stat-head {
  display: flex;
  align-items: baseline;
  gap: 2rem;
}

.stat-value {
  font-size: 38rem;
  font-weight: 800;
  line-height: 1;
  color: var(--ink);
  letter-spacing: -1.5rem;
  font-variant-numeric: tabular-nums;
  transition: color 0.3s ease;
}

.stat-value.animate {
  will-change: text-content;
}

.stat-card:hover .stat-value {
  color: var(--red);
}

.stat-suffix {
  font-size: 15rem;
  font-weight: 700;
  color: var(--red);
}

.stat-label {
  margin-top: 10rem;
  font-size: 13rem;
  font-weight: 400;
  letter-spacing: 0.5rem;
  color: #888888;
  white-space: nowrap;
}

.about-image-wrapper {
  position: relative;
  padding-bottom: 24rem;
  padding-right: 24rem;
  will-change: transform;
}

.about-image-bg {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 88%;
  height: 88%;
  border-radius: 28rem;
  background: linear-gradient(135deg, rgba(241, 42, 9, 0.12) 0%, rgba(241, 42, 9, 0.02) 100%);
  border: 1px solid rgba(241, 42, 9, 0.2);
  z-index: 0;
  animation: bgPulse 6s ease-in-out infinite;
}

.about-image {
  position: relative;
  z-index: 1;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border-radius: 24rem;
  background: #EAEAEA;
  box-shadow: 0 25rem 60rem rgba(0, 0, 0, 0.12);
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.about-image-wrapper:hover img {
  transform: scale(1.05);
}

.about-float-badge {
  position: absolute;
  bottom: 0;
  left: -20rem;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 14rem;
  padding: 16rem 24rem;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 18rem;
  box-shadow: 0 20rem 40rem rgba(0, 0, 0, 0.08);
  animation: floatBadge 4s ease-in-out infinite;
  will-change: transform;
}

.badge-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44rem;
  height: 44rem;
  border-radius: 12rem;
  background: rgba(241, 42, 9, 0.1);
  color: var(--red);
  flex-shrink: 0;
}

.badge-text {
  display: flex;
  flex-direction: column;
}

.badge-title {
  font-size: 15rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.3;
}

.badge-sub {
  font-size: 12rem;
  font-weight: 300;
  color: #777;
  margin-top: 2rem;
}

.reveal {
  opacity: 0;
  transform: translateY(40rem);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal.d1 {
  transition-delay: 0.15s;
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

@keyframes floatBadge {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8rem); }
}

@keyframes bgPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.75; transform: scale(0.98); }
}

@keyframes watermarkShift {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(10rem); }
}

@keyframes btnShimmer {
  0%, 75% { left: -60%; }
  100% { left: 140%; }
}

@media (max-width: 1024px) {
  .about-inner {
    flex-direction: column;
    gap: 60rem;
  }
  .about-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-float-badge {
    left: 10rem;
    bottom: -10rem;
  }
}

@media (max-width: 576px) {
  .about-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 10rem;
  }
  .stat-card {
    padding: 16rem 14rem;
  }
  .stat-value {
    font-size: 30rem;
  }
  .section-bg-text {
    font-size: 64rem;
    top: -24rem;
  }
}

/* ---------------------------------------------------------
   发展历程
   --------------------------------------------------------- */
.history {
  background: var(--gray-bg);
}

.history-wrap {
  position: relative;
}

.history-track {
  display: flex;
  gap: 4vw;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 0 0 20rem;
  cursor: grab;
  scrollbar-width: none;
}

.history-track::-webkit-scrollbar {
  display: none;
}

.history-track.dragging {
  cursor: grabbing;
  scroll-snap-type: none;
}

.history-panel {
  flex: 0 0 68vw;
  height: 72vh;
  min-height: 420rem;
  position: relative;
  overflow: hidden;
  scroll-snap-align: center;
  background: #f4f4f4;
  border-radius: 8rem;
}

.history-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.history-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.history-panel:hover .history-bg img {
  transform: scale(1.05);
}

.history-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.75) 0%,
    rgba(0, 0, 0, 0.20) 50%,
    rgba(0, 0, 0, 0.05) 100%
  );
  z-index: 1;
  pointer-events: none;
}

.history-year {
  position: absolute;
  top: 0;
  right: 1.5vw;
  font-size: clamp(64rem, 10vw, 192rem);
  font-weight: 900;
  line-height: 1;
  color: rgba(255, 255, 255, 0.10);
  letter-spacing: -0.03em;
  pointer-events: none;
  user-select: none;
  z-index: 2;
  transition: color 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.history-panel.is-active .history-year {
  color: #f12a0987;
}

.history-panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%) scaleY(0);
  width: 4rem;
  height: 60%;
  background: var(--red);
  z-index: 3;
  border-radius: 0 4rem 4rem 0;
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.history-panel.is-active::before {
  transform: translateY(-50%) scaleY(1);
}

.history-info {
  position: absolute;
  left: 42rem;
  bottom: 40rem;
  max-width: 70%;
  z-index: 2;
}

.history-info h3 {
  font-size: 24rem;
  font-weight: 700;
  letter-spacing: 0.5rem;
  color: #fff;
  margin-bottom: 10rem;
  text-shadow: 0 2rem 20rem rgba(0, 0, 0, 0.30);
}

.history-info p {
  font-size: 14rem;
  font-weight: 300;
  letter-spacing: 1rem;
  color: rgba(255, 255, 255, 0.75);
  text-shadow: 0 2rem 12rem rgba(0, 0, 0, 0.25);
}

.history-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48rem;
  height: 48rem;
  border-radius: 50%;
  border: 1rem solid rgba(255, 255, 255, 0.30);
  background: rgba(0, 0, 0, 0.30);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #fff;
  font-size: 20rem;
  line-height: 1;
  cursor: pointer;
  z-index: 5;
  transition: border-color 0.3s ease, color 0.3s ease, background 0.3s ease;
}

.history-arrow.prev {
  left: 2.2vw;
}

.history-arrow.next {
  right: 2.2vw;
}

.history-arrow:hover {
  border-color: var(--red);
  color: var(--red);
  background: rgba(255, 255, 255, 0.85);
}

@media (max-width: 1199px) {
  .history-track {
    flex-direction: column;
    overflow-x: visible;
    padding: 0;
    gap: 24rem;
  }

  .history-panel {
    flex: none;
    width: 100%;
    height: 380rem;
    min-height: 0;
    scroll-snap-align: none;
  }

  .history-year {
    top: -2vw;
    right: 2vw;
  }

  .history-arrow {
    display: none;
  }
}

@media (max-width: 767px) {
  .history-panel {
    height: 300rem;
  }

  .history-info {
    left: 24rem;
    bottom: 24rem;
    max-width: 80%;
  }

  .history-info h3 {
    font-size: 20rem;
  }

  .history-info p {
    font-size: 13rem;
  }
}

/* ---------------------------------------------------------
   精品工程
   --------------------------------------------------------- */
.projects {
  background: #fff;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24rem;
}

.project-item {
  position: relative;
  display: block;
  border-radius: 8rem;
  overflow: hidden;
  background: #f5f5f5;
  text-decoration: none;
  color: inherit;
  aspect-ratio: 4 / 3;
  cursor: pointer;
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
  transform: translateZ(0);
  backface-visibility: hidden;
}

.project-item:hover {
  transform: translateY(-12rem);
  box-shadow: 0 20rem 60rem rgba(196, 26, 26, 0.15);
}

.project-media {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.project-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.project-item:hover .project-media img {
  transform: scale(1.08);
}

.project-item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(196, 26, 26, 0.85) 0%,
    rgba(196, 26, 26, 0.30) 50%,
    transparent 80%
  );
  opacity: 0;
  transition: opacity 0.5s ease;
  z-index: 1;
}

.project-item:hover::after {
  opacity: 1;
}

.project-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2;
  padding: 32rem 20rem 22rem;
  text-align: center;
  font-size: 18rem;
  font-weight: 500;
  letter-spacing: 0.5rem;
  color: rgb(255 255 255);
  background: linear-gradient(to top, rgba(0,0,0,0.55) 0%, transparent 100%);
  transition: color 0.4s ease, transform 0.5s cubic-bezier(0.22, 1, 0.36, 1),
              padding 0.4s ease, background 0.4s ease;
  transform: translateY(0);
}

.project-item:hover .project-caption {
  color: #fff;
  transform: translateY(-6rem);
  padding-bottom: 28rem;
  background: linear-gradient(to top, rgba(0,0,0,0.70) 0%, transparent 100%);
}

.project-caption::after {
  content: "";
  display: block;
  width: 0;
  height: 2rem;
  margin: 10rem auto 0;
  background: #fff;
  border-radius: 2rem;
  transition: width 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.project-item:hover .project-caption::after {
  width: 40rem;
}

.project-badge {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  z-index: 3;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #fff;
  font-size: 14rem;
  font-weight: 500;
  letter-spacing: 2rem;
  padding: 8rem 24rem;
  border-radius: 4rem;
  border: 1px solid rgba(255, 255, 255, 0.25);
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.22, 1, 0.36, 1),
              background 0.3s ease, border-color 0.3s ease;
  pointer-events: none;
}

.project-item:hover .project-badge {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
  background: var(--red);
  border-color: var(--red);
}

.projects-footer {
  display: flex;
  justify-content: center;
  margin-top: 52rem;
}

.btn-projects-all {
  display: inline-flex;
  align-items: center;
  gap: 12rem;
  padding: 14rem 48rem;
  border: 1.5rem solid var(--red);
  border-radius: 4rem;
  background: transparent;
  color: var(--red);
  font-size: 18rem;
  font-weight: 400;
  letter-spacing: 2rem;
  transition: background 0.35s ease, color 0.35s ease, transform 0.35s ease;
  text-decoration: none;
}

.btn-projects-all:hover {
  background: var(--red);
  color: #fff;
  transform: translateY(-2rem);
}

.btn-arrow {
  display: inline-block;
  transition: transform 0.35s ease;
}

.btn-projects-all:hover .btn-arrow {
  transform: translateX(6rem);
}

@media (max-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20rem;
  }
}

@media (max-width: 640px) {
  .projects-grid {
    grid-template-columns: 1fr;
    gap: 16rem;
  }

  .project-item {
    aspect-ratio: 16 / 10;
  }

  .project-item:hover {
    transform: translateY(-6rem);
  }

  .project-caption {
    font-size: 14rem;
    padding: 24rem 16rem 18rem;
  }

  .project-item:hover .project-caption {
    padding-bottom: 22rem;
  }

  .project-badge {
    top: 50%;
    font-size: 10rem;
    padding: 3rem 12rem;
  }

  .projects-footer {
    margin-top: 10rem;
  }

  .btn-projects-all {
    padding: 10rem 15rem;
    font-size: 13rem;
  }
}

@media (hover: none) {
  .project-item::after {
    opacity: 1;
    background: linear-gradient(
      to top,
      rgba(0, 0, 0, 0.60) 0%,
      transparent 70%
    );
  }

  .project-item:hover {
    transform: none;
  }

  .project-caption {
    color: #fff;
  }

  .project-caption::after {
    width: 30rem;
  }


}

/* ---------------------------------------------------------
   生产实力
   --------------------------------------------------------- */
.manufacturing {
  position: relative;
  height: 100vh;
  height: 100svh;
  min-height: 640rem;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #111;
}

.manu-media {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.manu-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.12);
  will-change: transform;
}

.manu-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
}

.manu-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24rem;
}

.manu-eyebrow {
  font-size: 13rem;
  font-weight: 300;
  letter-spacing: 6rem;
  color: rgba(255, 255, 255, 0.6);
}

.manu-title {
  margin: 22rem 0 30rem;
  font-size: clamp(32rem, 3.5vw, 64rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #fff;
}

.manu-tags {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16rem;
  color: rgba(255, 255, 255, 0.86);
  font-weight: 300;
  letter-spacing: 2rem;
  font-size: 15rem;
}

.manu-tags i {
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  background: var(--red);
  display: inline-block;
}

/* ---------------------------------------------------------
   合作伙伴
   --------------------------------------------------------- */
.partners {
  background: #fff;
}

.marquee {
  overflow: hidden;
  margin-top: 48rem;
  -webkit-mask-image: linear-gradient(
    90deg,
    transparent,
    #000 12%,
    #000 88%,
    transparent
  );
  mask-image: linear-gradient(
    90deg,
    transparent,
    #000 12%,
    #000 88%,
    transparent
  );
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 36s linear infinite;
}

.marquee-track:hover {
  animation-play-state: paused;
}

.marquee-group {
  display: flex;
  gap: 96rem;
  padding-right: 96rem;
}

.partner-logo {
  display: flex;
  align-items: center;
  gap: 12rem;
  font-size: 22rem;
  font-weight: 400;
  letter-spacing: 3rem;
  color: #c6c6c6;
  filter: grayscale(1);
  white-space: nowrap;
  transition: color 0.4s ease, filter 0.4s ease;
  cursor: default;
}

.partner-logo::before {
  content: "";
  width: 12rem;
  height: 12rem;
  border: 1rem solid currentColor;
  transform: rotate(45deg);
  display: inline-block;
  flex: 0 0 auto;
}

.partner-logo:hover {
  color: var(--ink-2);
  filter: grayscale(0);
}

@keyframes marquee {
  to {
    transform: translateX(-50%);
  }
}

/* ---------------------------------------------------------
   新闻动态
   --------------------------------------------------------- */
.news {
  background: var(--gray-bg);
}

.news-layout {
  display: flex;
  align-items: stretch;
  gap: 28rem;
}

.news-feature {
  flex: 0 0 calc(60% - 14rem);
  min-width: 0;
  background: #fff;
  overflow: hidden;
  transition: box-shadow 0.5s ease;
}

.news-feature-link {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.news-feature-media {
  overflow: hidden;
  height: 100%;
}

.news-feature-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1s ease-out;
}

.news-feature:hover {
  box-shadow: 0 20rem 60rem rgba(0, 0, 0, 0.08);
}

.news-feature:hover .news-feature-media img {
  transform: scale(1.04);
}

.news-feature-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 3rem;
  padding: 20rem 36rem 20rem;
}

.news-date,
.news-item-date {
  font-size: 15rem;
  font-weight: 500;
  letter-spacing: 1.5rem;
  color: var(--gray);
}

.news-feature-info h3 {
  font-size: 26rem;
  font-weight: 700;
  letter-spacing: 0.5rem;
  line-height: 1.3;
  color: var(--ink);
  margin: 0;
}

.news-feature-info p {
  font-size: 16rem;
  font-weight: 300;
  line-height: 1.7;
  color: #1a1a1a;
}

.news-more {
  margin-top: 8rem;
  font-size: 18rem;
  font-weight: 300;
  letter-spacing: 1rem;
  color: var(--red);
  transition: transform 0.3s ease;
}

.news-feature:hover .news-more {
  transform: translateX(4rem);
}

.news-list {
  flex: 0 0 calc(40% - 14rem);
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 24rem;
}

.news-item {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  gap: 6rem;
  padding: 24rem 28rem;
  background: #fff;
  border-left: 2rem solid transparent;
  transition: border-color 0.35s ease, background 0.35s ease;
}

.news-item:hover {
  border-left-color: var(--red);
  background: #fafafa;
}

.news-item-title {
  font-size: 26rem;
  font-weight: 700;
  letter-spacing: 0.5rem;
  line-height: 1.4;
  color: var(--ink);
  transition: color 0.3s ease,
              transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
  transform: translateZ(0);
  backface-visibility: hidden;
  display: inline-block;
}

.news-item:hover .news-item-title {
  color: var(--red);
  transform: translateX(4rem);
}

.news-item-arrow {
  position: absolute;
  right: 24rem;
  bottom: 0%;
  transform: translateY(-50%);
  font-size: 18rem;
  color: var(--red);
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.news-item:hover .news-item-arrow {
  opacity: 1;
  transform: translateY(-50%) translateX(2rem);
}

.news-item {
  position: relative;
}

.news-footer {
  display: flex;
  justify-content: flex-end;
  margin-top: 36rem;
}

.news-all {
  font-size: 14rem;
  font-weight: 300;
  letter-spacing: 1rem;
  color: var(--ink);
  transition: color 0.3s ease;
}

.news-all:hover {
  color: var(--red);
}

/* ---------------------------------------------------------
   底部信息区
   --------------------------------------------------------- */
.footer {
  position: relative;
  background: #0f3b82;
  color: #fff;
  padding: 40rem 6vw 0;
}

.jiao {
  object-fit: cover;
  width: 220rem;
  height: auto;
}

.footer-wave-wrapper {
  position: absolute;
  top: -50rem;
  left: 0;
  width: 100%;
  height: 50rem;
  overflow: hidden;
  line-height: 0;
  pointer-events: none;
  z-index: 2;
}

.footer-waves {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 40rem;
}

.parallax > use {
  animation: moveForever 25s cubic-bezier(.55, .5, .45, .5) infinite;
}

.parallax > use:nth-child(1) { animation-delay: -2s; animation-duration: 7s; }
.parallax > use:nth-child(2) { animation-delay: -3s; animation-duration: 10s; }
.parallax > use:nth-child(3) { animation-delay: -4s; animation-duration: 13s; }
.parallax > use:nth-child(4) { animation-delay: -5s; animation-duration: 20s; }

@keyframes moveForever {
  0% { transform: translate3d(-90rem, 0, 0); }
  100% { transform: translate3d(85rem, 0, 0); }
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 48rem;
  padding-bottom: 60rem;
  max-width: 1680rem;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

.footer-col {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8rem;
  font-size: 16rem;
  font-weight: 300;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.62);
}

.footer-col:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -24rem;
  top: 10%;
  height: 80%;
  width: 1rem;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.15), transparent);
}

.footer-col:nth-child(1) { flex: 1.4 1 0; min-width: 200rem; }
.footer-col:nth-child(2) { flex: 0.8 1 0; min-width: 130rem; }
.footer-col:nth-child(3) { flex: 1 1 0; min-width: 150rem; }
.footer-col:nth-child(4) { flex: 1.2 1 0; min-width: 210rem; }
.footer-col:nth-child(5) { flex: 0.8 1 0; min-width: 130rem; }

.footer-title {
  position: relative;
  font-size: 20rem;
  font-weight: 600;
  letter-spacing: 2rem;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 16rem;
  padding-bottom: 8rem;
}

.footer-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32rem;
  height: 2rem;
  background: linear-gradient(90deg, #f12a09, transparent);
  animation: laserPulse 3s ease-in-out infinite alternate;
}

@keyframes laserPulse {
  0% { width: 20rem; opacity: 0.6; }
  100% { width: 50rem; opacity: 1; filter: drop-shadow(0 0 6rem #f12a09); }
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12rem;
  margin-top: 6rem;
}

.footer-desc {
  color: rgba(255, 255, 255, 0.45);
  margin-top: 10rem;
}

.footer-meta {
  font-size: 16rem;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.42);
  margin-top: 10rem;
}

.footer-links a,
.footer-products a {
  position: relative;
  color: rgba(255, 255, 255, 0.66);
  padding: 2rem 0;
  transition: color 0.3s ease, transform 0.3s ease;
}

.footer-links a:hover,
.footer-products a:hover {
  color: #fff;
  transform: translateX(6rem);
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 12rem;
  margin-bottom: 8rem;
  color: rgba(255, 255, 255, 0.8);
}

.contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34rem;
  height: 34rem;
  flex-shrink: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  color: #f12a09;
  border: 1rem solid rgba(241, 42, 9, 0.2);
  animation: iconBreath 4s ease-in-out infinite;
}

.contact-icon svg {
  width: 18rem;
  height: 18rem;
  display: block;
  flex-shrink: 0;
}

@keyframes iconBreath {
  0%, 100% { box-shadow: 0 0 0 0 rgba(241, 42, 9, 0); }
  50% { box-shadow: 0 0 10rem 2rem rgba(241, 42, 9, 0.3); border-color: rgba(241, 42, 9, 0.6); }
}

.footer-contact-item a {
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.3s ease;
}

.footer-contact-item a:hover {
  color: #f12a09;
}

.footer-qrcode {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10rem;
}

.footer-qrcode .qr-placeholder {
  width: 110rem;
  height: 110rem;
  background: #fff;
  border-radius: 8rem;
  padding: 6rem;
  box-shadow: 0 10rem 30rem rgba(0, 0, 0, 0.25);
  animation: floatQr 5s ease-in-out infinite;
  border: 1rem solid rgba(255, 255, 255, 0.2);
}

.footer-qrcode .qr-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

@keyframes floatQr {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6rem); box-shadow: 0 16rem 35rem rgba(241, 42, 9, 0.2); }
}

.footer-qrcode .qr-label {
  font-size: 14rem;
  font-weight: 300;
  letter-spacing: 1rem;
  color: rgba(255, 255, 255, 0.55);
}

.footer-bottom {
  /* border-top: 1rem solid rgba(255, 255, 255, 0.1); */
  padding: 24rem 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 14rem;
  font-weight: 300;
  letter-spacing: 1rem;
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.3s ease;
}

.footer-bottom a:hover {
  color: #f12a09;
}

/* ---------------------------------------------------------
   回到顶部
   --------------------------------------------------------- */
.back-top {
  position: fixed;
  right: 32rem;
  bottom: 32rem;
  width: 44rem;
  height: 44rem;
  border-radius: 50%;
  border: 1rem solid var(--red);
  background: transparent;
  color: var(--red);
  font-size: 18rem;
  line-height: 1;
  cursor: pointer;
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.6s ease, background 0.3s ease, color 0.3s ease;
}

.back-top.show {
  opacity: 1;
  pointer-events: auto;
}

.back-top:hover {
  background: var(--red);
  color: #fff;
}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width: 1199px) {
  .header-inner {
    padding: 20rem 30rem;
  }

  .header.scrolled .header-inner {
    padding: 12rem 30rem;
  }

  .nav-list {
    gap: 16rem;
  }

  .nav-link {
    font-size: 13rem;
    letter-spacing: 0.5rem;
  }

  .header-tel {
    font-size: 13rem;
  }

  .section {
    padding: 80rem 32rem;
  }

  #business {
    padding-top: 80rem;
    padding-bottom: 60rem;
  }

  #advantages {
    padding-top: 60rem;
    padding-bottom: 60rem;
  }

  #about {
    padding: 60rem 32rem;
  }

  #history {
    padding-top: 80rem;
    padding-bottom: 60rem;
  }

  #projects {
    padding-top: 80rem;
    padding-bottom: 60rem;
  }

  #partners {
    padding-top: 60rem;
    padding-bottom: 60rem;
  }

  #news {
    padding-top: 60rem;
    padding-bottom: 60rem;
  }

  .about-content {
    max-width: 50%;
  }

  .about-stats {
    margin-right: 3vw;
    padding: 24rem 28rem;
    gap: 16rem 32rem;
  }

  .stat-num {
    font-size: clamp(28rem, 3vw, 40rem);
  }

  .stat-label {
    font-size: 11rem;
    letter-spacing: 1rem;
  }

  .business-grid {
    gap: 28rem;
  }

  .biz-steel,
  .biz-pv {
    flex: 0 0 calc(50% - 14rem);
    height: 468rem;
  }

  .biz-assembly {
    flex: 0 0 100%;
    height: 468rem;
  }

  .biz-aluminum {
    flex: 0 0 calc(66.666% - 10rem);
    height: 300rem;
    margin-left: auto;
    margin-right: auto;
  }

  .advantages-grid {
    gap: 24rem;
  }

  .advantage-card {
    flex: 0 0 calc(50% - 14rem);
    min-height: 280rem;
    padding: 40rem 32rem 36rem;
  }

  .adv-num {
    font-size: 80rem;
  }

  .adv-icon-wrap {
    width: 60rem;
    height: 60rem;
  }

  .adv-icon {
    width: 26rem;
    height: 26rem;
  }

  .advantage-card h3 {
    font-size: 22rem;
  }

  .advantage-card p {
    font-size: 14rem;
  }

  .news-layout {
    flex-direction: column;
    gap: 24rem;
  }

  .news-feature,
  .news-list {
    flex: none;
    width: 100%;
  }

  .footer-grid {
    gap: 32rem;
  }

  .footer-col:nth-child(1) {
    flex: 1 1 100%;
    min-width: 0;
  }

  .footer-col:nth-child(2),
  .footer-col:nth-child(3),
  .footer-col:nth-child(4),
  .footer-col:nth-child(5) {
    flex: 1 1 40%;
    min-width: 0;
  }
}

@media (max-width: 900px) {
  .header-tel span {
    display: none;
  }

  .header-tel {
    gap: 0;
  }
}

@media (max-width: 767px) {
    .footer-products{display:none !important;}
    .footer-links{display:none !important;}
  .header-inner {
    padding: 16rem 18rem;
  }
  

  .header.scrolled .header-inner {
    padding: 10rem 18rem;
  }

  .nav,
  .header-tel {
    display: none;
  }

  .burger {
    display: flex;
  }

  .section {
    padding: 10rem 10rem;
  }

  #business {
    padding-top: 10rem;
    padding-bottom: 10rem;
  }

  #advantages {
    padding-top: 40rem;
    padding-bottom: 40rem;
  }

  #about {
    padding: 10rem 10rem;
  }

  #history {
    padding-top: 60rem;
    padding-bottom: 90rem;
  }

  #projects {
    padding-top: 10rem;
    padding-bottom: 10rem;
  }

  #partners {
    padding-top: 40rem;
    padding-bottom: 40rem;
  }

  #news {
    padding-top: 40rem;
    padding-bottom: 40rem;
  }

  .section-head {
    margin-bottom: 10rem !important;
  }

  .hero {
    min-height: 600rem;
  }

  .hero-cta {
    padding: 13rem 36rem;
    letter-spacing: 2rem;
  }

  .hero-scroll {
    bottom: 24rem;
  }

  .hero-arrow {
    width: 40rem;
    height: 40rem;
    font-size: 16rem;
  }

  .hero-arrow.prev {
    left: 14rem;
  }

  .hero-arrow.next {
    right: 14rem;
  }

  .hero-dots {
    bottom: 76rem;
  }

  .business-grid {
    flex-direction: column;
    gap: 20rem;
  }

  .biz-steel,
  .biz-pv,
  .biz-assembly,
  .biz-aluminum {
    flex: none;
    width: 100%;
    height: 220rem !important;  /* ← 修复：从 300rem 改为 220rem */
    margin-left: 0;
    margin-right: 0;
  }

  .biz-assembly {
    height: 220rem !important;  /* ← 修复 */
  }

  .biz-aluminum {
    height: 220rem !important;  /* ← 修复 */
  }

  .biz-railing {
    width: 48%;
    height: 150rem;
    right: 5%;
    bottom: 8%;
  }

  .biz-info {
    padding: 24rem 20rem 20rem;
  }

  .advantages-grid {
    gap: 20rem;
  }

  .advantage-card {
    flex: none;
    width: 100%;
    min-height: 240rem;
    padding: 32rem 24rem 28rem;
  }

  .adv-num {
    font-size: 64rem;
    top: -4rem;
    right: 0;
  }

  .adv-icon-wrap {
    width: 52rem;
    height: 52rem;
    margin-bottom: 24rem;
  }

  .adv-icon {
    width: 22rem;
    height: 22rem;
  }

  .advantage-card h3 {
    font-size: 20rem;
  }

  .advantage-card p {
    font-size: 13rem;
  }

  .adv-tag {
    bottom: 28rem;
    right: 24rem;
    font-size: 10rem;
  }

  .adv-line {
    margin-top: 14rem;
    width: 32rem;
    height: 2.5rem;
  }

  .advantage-card:hover .adv-line {
    width: 52rem;
  }

  .about {
    min-height: 440rem;
    flex-direction: column;
    justify-content: flex-end;
    align-items: stretch;
    padding-bottom: 0;
  }

  .about-content {
    position: relative;
    margin: 0;
    padding: 60rem 22rem 20rem;
    max-width: 100%;
    flex-shrink: 0;
  }

  .about-text {
    max-width: 100%;
  }

  .about-stats {
    position: relative;
    grid-template-columns: 1fr 1fr;
    gap: 10rem 10rem;
    margin: 10rem auto;
    padding: 0;
    border-radius: 12rem;
  }

  .stat-num {
    font-size: 28rem;
  }

  .stat-unit {
    font-size: 14rem;
  }

  .stat-label {
    font-size: 14rem;
    letter-spacing: 1rem;
    margin-top: 4rem;
  }

  .stat-line {
    width: 16rem;
    margin-top: 6rem;
  }

  .manufacturing {
    min-height: 560rem;
  }

  .manu-tags {
    gap: 12rem;
    font-size: 13rem;
  }

  .news-feature-media {
    height: 240rem;
  }

  .news-feature-info {
    padding: 24rem 24rem 28rem;
  }

  .news-feature-info h3 {
    font-size: 22rem;
  }

  .news-item {
    padding: 20rem 24rem;
  }

  .news-footer {
    margin-top: 28rem;
  }

  .footer {
    margin-top: 50rem;
    padding: 0rem 24rem 0;
  }

  .footer-grid {
    width: 100%;
    flex-direction: column;
    gap: 10rem;
    padding-bottom: 10rem;
  }

  .footer-col:nth-child(1),
  .footer-col:nth-child(2),
  .footer-col:nth-child(3),
  .footer-col:nth-child(4),
  .footer-col:nth-child(5) {
    flex: none;
    width: 100%;
    min-width: 0;
  }

  .footer-links {
    gap: 8rem;
  }

  .back-top {
    right: 18rem;
    bottom: 18rem;
    width: 40rem;
    height: 40rem;
  }

  .search-close {
    top: 20rem;
    right: 24rem;
    font-size: 32rem;
  }

  .search-modal {
    width: 92%;
    padding: 10rem;
  }

  .search-form {
    gap: 12rem;
    padding-bottom: 14rem;
  }

  .search-input {
    font-size: 24rem;
    padding: 14rem 0;
  }

  .search-submit {
    padding: 14rem 28rem;
    font-size: 15rem;
  }

  .search-hint {
    display: none;
    font-size: 12rem;
    margin-top: 18rem;
  }
}

@media (hover: none) {
  .cursor-dot {
    display: none;
  }

  .biz-media::after {
    opacity: 0;
  }

  .history-track {
    cursor: default;
  }

  .news-item-arrow {
    opacity: 1;
  }

  .adv-bar {
    opacity: 1;
    height: 3rem;
  }

  .adv-num {
    color: rgba(196, 26, 26, 0.08);
  }

  .adv-line {
    width: 52rem;
  }

  .biz-item:hover {
    transform: none;
  }

  .advantage-card:hover {
    transform: none;
  }

  .project-item:hover {
    transform: none;
  }

  .news-item:hover .news-item-title {
    transform: none;
  }
}

@media (hover: hover) and (pointer: fine) {
  /* 精细指针设备保留悬停微交互 */
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important;
  }

  .stat-num.animate {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ---------------------------------------------------------
   核心优势模块
   --------------------------------------------------------- */
.adv-module-wrapper,
.adv-module-wrapper * {
  box-sizing: border-box !important;
  margin: 0;
  padding: 0;
}

.adv-module-wrapper {
  width: 100%;
  margin: 0 auto;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}

.adv-card-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25rem;
  width: 100%;
}

.adv-card {
  position: relative;
  height: 420rem;  /* ← 修复：从 520rem 改为 420rem */
  border-radius: 4px;
  overflow: hidden;
  background-size: cover;
  background-position: center;
  color: #ffffff;
  transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.3s ease;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
  cursor: pointer;
}

.adv-card:hover {
  transform: translateY(-15rem);
  box-shadow: 0 12px 20px rgba(0, 0, 0, 0.3);
}

/* 注意：请确保以下背景图 URL 正确 */

.adv-card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  transition: background-color 0.3s ease;
}

.adv-card:hover .adv-card-overlay {
  background: #1a1a1a;
}

.adv-card.adv-green-theme:hover .adv-card-overlay {
  background: #f12a09b3;
}

.adv-card-content {
  position: relative;
  z-index: 1;
  padding: 40rem 20rem;
  height: 100%;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  flex-direction: column;
  justify-content: center;
}

.adv-card-icon {
  width: 80rem;
  height: 80rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 25rem;
  margin-bottom: 20rem;
}

.adv-card-title {
  font-size: 22rem;
  font-weight: bold;
  margin-bottom: 5rem;
  letter-spacing: 2rem;
}

.adv-card-list {
  text-align: center;
  list-style: none !important;
  width: 100%;
  font-size: 18rem;
  line-height: 1.8;
}

.adv-card-list li {
  margin-bottom: 12rem;
  text-align: center;
}

.adv-card-phone {
  position: absolute;
  bottom: 25rem;
  left: 0;
  width: 100%;
  text-align: center;
  z-index: 2;
  opacity: 0;
  transform: translateY(30rem);
  transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  font-size: 18rem;
  font-weight: bold;
}

.adv-card-phone .adv-number {
  color: #ffeb3b;
  font-size: 20rem;
  margin-left: 6rem;
}

.adv-card:hover .adv-card-phone {
  opacity: 1;
  transform: translateY(0);
}

/* =========================================================
   核心优势 · 响应式覆盖（修复）
   ========================================================= */
@media (max-width: 1024px) {
  .adv-card-container {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 20rem !important;
  }
  .adv-card {
    height: 360rem !important;
  }
}

@media (max-width: 576px) {
  .adv-card-container {
    grid-template-columns: 1fr !important;
    gap: 16rem !important;
  }
  .news-item-arrow {
  position: absolute;
  right: 24rem;
  bottom: 0%;
  transform: translateY(-50%);
  font-size: 12rem;
  color: var(--red);
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.jiao {
  object-fit: cover;
  width: 130rem;
  height: auto;
}
.news-more {
  margin-top: 8rem;
  font-size: 12rem;
  font-weight: 300;
  letter-spacing: 1rem;
  color: var(--red);
  transition: transform 0.3s ease;
}
  .adv-card {
    height: 320rem !important;
    min-height: 280rem !important;
  }
}

.dh {
  font-size: 18rem;
}

/* =========================================================
   生产实力 · 视频 + 呼吸播放按钮
   ========================================================= */
.manu-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.12);
  will-change: transform;
}

.manu-video + img {
  display: none;
}

.manu-video:not([src]) + img,
.manu-video[src=""] + img {
  display: block;
}

.play-btn {
  position: relative;
  margin-top: 44rem;
  width: 80rem;
  height: 80rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 2rem solid rgba(255, 255, 255, 0.4);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease;
  animation: breathe 2.8s ease-in-out infinite;
}

.play-btn:hover {
  transform: scale(1.08);
  background: var(--red);
  border-color: var(--red);
  animation-play-state: paused;
}

.play-btn:active {
  transform: scale(0.92);
}

.play-icon {
  width: 32rem;
  height: 32rem;
  color: #fff;
  transition: transform 0.3s ease;
  margin-left: 4rem;
}

.play-btn:hover .play-icon {
  transform: scale(1.1);
}

@keyframes breathe {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.2);
    transform: scale(1);
  }
  30% {
    box-shadow: 0 0 0 20rem rgba(255, 255, 255, 0.05);
    transform: scale(1.03);
  }
  60% {
    box-shadow: 0 0 0 40rem rgba(255, 255, 255, 0.02);
    transform: scale(1.01);
  }
  80% {
    box-shadow: 0 0 0 10rem rgba(255, 255, 255, 0.08);
    transform: scale(0.98);
  }
}

.play-btn.is-playing {
  animation: none;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
}

.play-btn.is-playing .play-icon polygon {
  display: none;
}

.play-btn.is-playing .play-icon::before,
.play-btn.is-playing .play-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 4rem;
  height: 20rem;
  background: #fff;
  border-radius: 2rem;
}

.play-btn.is-playing .play-icon::before {
  left: 50%;
  margin-left: -8rem;
}

.play-btn.is-playing .play-icon::after {
  right: 50%;
  margin-right: -8rem;
}

.play-label {
  display: block;
  margin-top: 14rem;
  font-size: 13rem;
  font-weight: 300;
  letter-spacing: 2rem;
  color: rgba(255, 255, 255, 0.5);
  transition: color 0.3s ease;
}

.play-btn:hover + .play-label,
.play-btn:focus + .play-label {
  color: rgba(255, 255, 255, 0.85);
}

@media (max-width: 767px) {
  .play-btn {
    width: 64rem;
    height: 64rem;
    margin-top: 32rem;
  }

  .play-icon {
    width: 26rem;
    height: 26rem;
    margin-left: 3rem;
  }

  @keyframes breathe {
    0%, 100% {
      box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.2);
    }
    30% {
      box-shadow: 0 0 0 14rem rgba(255, 255, 255, 0.05);
    }
    60% {
      box-shadow: 0 0 0 28rem rgba(255, 255, 255, 0.02);
    }
  }
}

/* =========================================================
   核心优势 · 还原原始动画 + 从下往上背景平滑推进
   ========================================================= */
#advantages .adv-card-container {
  display: grid !important;
  grid-template-columns: repeat(4, 1fr) !important;
  gap: 25rem !important;
}

#advantages .adv-card {
  position: relative !important;
  height: 280rem !important;
  border-radius: 4px !important;
  overflow: hidden !important;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.4s cubic-bezier(0.22, 1, 0.36, 1) !important;
}

#advantages .adv-card:hover {
  transform: translateY(-12rem) !important;
  box-shadow: 0 20rem 40rem rgba(0, 0, 0, 0.25) !important;
}

/* 1. 默认暗色蒙层 */
#advantages .adv-card-overlay {
  position: absolute !important;
  inset: 0 !important;
  background: #f12a0996;
  pointer-events: none !important;
  z-index: 1 !important;
}

/* 2. 红色悬浮蒙层：初始在底部外侧 (100%)，悬浮时平滑上升 */
#advantages .adv-card-overlay-hover {
  position: absolute !important;
  inset: 0 !important;
  background: #f12a09;
  transform: translateY(100%) !important;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1) !important;
  pointer-events: none !important;
  z-index: 2 !important;
}

#advantages .adv-card:hover .adv-card-overlay-hover {
  transform: translateY(0) !important;
}

/* 3. 内容层置顶 */
#advantages .adv-card-content {
  position: relative !important;
  z-index: 3 !important;
}

/* ==================== 以下完全保留原版动画样式 ==================== */

/* 原版图标动画 */
#advantages .adv-card-icon {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 80rem !important;
  height: 80rem !important;
  border-radius: 50% !important;
  transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) !important;
}
@media (max-width: 768px) {
    #advantages .adv-card-icon {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 40rem !important;
  height: 40rem !important;
  border-radius: 50% !important;
  transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) !important;
}
.adv-card-title {
  font-size: 15rem;
  font-weight: bold;
  margin-bottom: 5rem;
  letter-spacing: 2rem;
}
.adv-card-list {
  text-align: center;
  list-style: none !important;
  width: 100%;
  font-size: 12rem;
  line-height: 1.8;
}
.adv-card-content {
  position: relative;
  z-index: 1;
  padding: 10rem;
  height: 100%;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  flex-direction: column;
  justify-content: center;
}
.adv-card-icon {
  width: 80rem;
  height: 80rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 25rem;
  margin-bottom: 10rem;
}
}
#advantages .adv-card:hover .adv-card-icon {
  transform: rotate(180deg) scale(1.02) !important;
}

#advantages .adv-card:hover .adv-card-icon img {
  transform: rotate(-180deg) !important;
}

/* 原版标题动画 */
#advantages .adv-card-title {
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) !important;
}

#advantages .adv-card:hover .adv-card-title {
  transform: scale(1.08) translateY(-3rem) !important;
}

/* 原版列表项左右交错位移动画 */
#advantages .adv-card-list li {
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) !important;
}

#advantages .adv-card:hover .adv-card-list li:nth-child(1) { transform: translateX(6rem) scale(1.02) !important; }
#advantages .adv-card:hover .adv-card-list li:nth-child(2) { transform: translateX(-6rem) scale(1.02) !important; }
#advantages .adv-card:hover .adv-card-list li:nth-child(3) { transform: translateX(4rem) scale(1.02) !important; }
#advantages .adv-card:hover .adv-card-list li:nth-child(4) { transform: translateX(-4rem) scale(1.02) !important; }
#advantages .adv-card:hover .adv-card-list li:nth-child(5) { transform: translateX(5rem) scale(1.02) !important; }

/* 原版热线电话动画 */
#advantages .adv-card-phone {
  position: absolute !important;
  bottom: 25rem !important;
  left: 0 !important;
  width: 100% !important;
  text-align: center !important;
  z-index: 4 !important;
  opacity: 0 !important;
  transform: translateY(30rem) scale(0.95) !important;
  transition: opacity 0.4s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.4s cubic-bezier(0.22, 1, 0.36, 1) !important;
}

#advantages .adv-card:hover .adv-card-phone {
  opacity: 1 !important;
  transform: translateY(0) scale(1) !important;
}

#advantages .adv-card-phone .adv-number {
  color: #ffeb3b !important;
}

/* =========================================================
   #advantages 的响应式覆盖（防止被全局覆盖）
   ========================================================= */
@media (max-width: 1024px) {
  #advantages .adv-card-container {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 20rem !important;
  }
  #advantages .adv-card {
    height: 260rem !important;
  }
}

@media (max-width: 576px) {
  #advantages .adv-card-container {
    grid-template-columns: 1fr 1fr !important;
    gap: 16rem !important;
  }
  #advantages .adv-card {
    height: 140rem !important;
    min-height: 140rem !important;
  }
}
/* =========================================================
   补充细节响应式修复 (手机端 576px 及以下)
   ========================================================= */
@media (max-width: 576px) {
  
  /* 1. 关于我们 */
  .about-inner {
    gap: 10rem !important;
  }
  .about-left .section-title {
    font-size: 28rem !important;
  }
  .about-text {
    font-size: 14rem !important;
    line-height: 1.8 !important;
  }
  .about-btn {
    padding: 10rem 20rem 10rem 24rem !important;
    font-size: 13rem !important;
  }
  .about-image-wrapper {
    padding-bottom: 12rem !important;
    padding-right: 12rem !important;
  }
  .about-float-badge {
    left: 4rem !important;
    bottom: -6rem !important;
    padding: 10rem 16rem !important;
    gap: 10rem !important;
  }
  .badge-icon {
    width: 32rem !important;
    height: 32rem !important;
  }
  .badge-title {
    font-size: 12rem !important;
  }
  .badge-sub {
    font-size: 10rem !important;
  }

  /* 2. 核心优势 - 背景滚动 */
  .advantages {
    background-attachment: scroll !important;
  }

  /* 3. 生产实力 */
  .manu-title {
    font-size: 26rem !important;
  }
  .manu-tags {
    font-size: 12rem !important;
    gap: 10rem !important;
  }
  .manu-tags i {
    width: 3rem !important;
    height: 3rem !important;
  }

  /* 4. 合作伙伴 */
  .partner-logo {
    font-size: 14rem !important;
    gap: 6rem !important;
  }
  .partner-logo::before {
    width: 8rem !important;
    height: 8rem !important;
  }
  .marquee-group {
    gap: 40rem !important;
    padding-right: 40rem !important;
  }

  /* 5. 页脚 */
  .footer-col {
    font-size: 14rem !important;
    gap: 4rem !important;
  }
  .footer-title {
    font-size: 17rem !important;
    margin-bottom: 10rem !important;
  }
  .footer-contact-item {
    gap: 8rem !important;
    font-size: 13rem !important;
  }
  .contact-icon {
    width: 28rem !important;
    height: 28rem !important;
  }
  .contact-icon svg {
    width: 14rem !important;
    height: 14rem !important;
  }
  .footer-qrcode .qr-placeholder {
    margin: 0 auto;
    width: 150rem !important;
    height: 150rem !important;
  }
  .footer-qrcode .qr-label {
    margin: 0 auto;
    margin: 0 a;
    font-size: 12rem !important;
  }

  /* 6. 回到顶部 */
  .back-top {
    right: 14rem !important;
    bottom: 14rem !important;
    width: 36rem !important;
    height: 36rem !important;
    font-size: 14rem !important;
  }

  /* 7. 通用文字 */
  body {
    font-size: 15rem !important;
  }
  .section-title {
    font-size: 26rem !important;
  }
  .section-en {
    font-size: 11rem !important;
    letter-spacing: 2rem !important;
  }
  .section-head {
    margin-bottom: 10rem !important;
  }

  /* 8. Hero 文字微调 */
  .hero-title {
    font-size: 36rem !important;
  }
  .hero-sub {
    font-size: 13rem !important;
  }
  .hero-eyebrow {
    font-size: 12rem !important;
    letter-spacing: 2rem !important;
  }
  .hero-cta {
    padding: 10rem 28rem !important;
    font-size: 13rem !important;
    margin-top: 28rem !important;
  }

  /* 9. 核心业务卡片文字 */
  .biz-name {
    font-size: 20rem !important;
  }
  .biz-sub {
    font-size: 11rem !important;
  }
  .biz-info {
    padding: 20rem 16rem 16rem !important;
  }

  /* 10. 核心优势卡片文字 */
  .advantage-card h3 {
    font-size: 18rem !important;
  }
  .advantage-card p {
    font-size: 13rem !important;
    max-width: 100% !important;
  }
  .adv-icon-wrap {
    width: 48rem !important;
    height: 48rem !important;
    margin-bottom: 16rem !important;
  }
  .adv-icon {
    width: 20rem !important;
    height: 20rem !important;
  }
  .adv-num {
    font-size: 48rem !important;
  }

  /* 11. 新闻动态 */
  .news-feature-info h3 {
    font-size: 20rem !important;
  }
  .news-feature-info p {
    font-size: 14rem !important;
  }
  .news-item-title {
    font-size: 18rem !important;
  }
  .news-date,
  .news-item-date {
    font-size: 12rem !important;
  }
  .news-feature-info {
    padding: 16rem 18rem 18rem !important;
  }
  .news-item {
    padding: 16rem 18rem !important;
  }

  /* 12. 精品工程 */
  .project-caption {
    font-size: 14rem !important;
    padding: 18rem 12rem 14rem !important;
  }

  /* 13. 发展历程 */
  .history-info h3 {
    font-size: 18rem !important;
  }
  .history-info p {
    font-size: 12rem !important;
  }
  .history-panel {
    height: 240rem !important;
  }
}

/* =========================================================
   移动端汉堡菜单 - 点击展开二级
   ========================================================= */
.mobile-menu-item {
  width: 100%;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.mobile-menu-link {
  display: flex !important;
  justify-content: space-between !important;
  align-items: center !important;
  padding: 14rem 0 !important;
  color: rgba(255, 255, 255, 0.85) !important;
  font-size: 18rem !important;
  font-weight: 400 !important;
  text-decoration: none !important;
  letter-spacing: 1rem !important;
}

.mobile-menu-link:hover {
  color: var(--red) !important;
}

.mobile-arrow {
  transition: transform 0.3s ease;
  font-size: 22rem;
  color: rgba(255, 255, 255, 0.4);
}

.mobile-arrow.open {
  transform: rotate(90deg);
}

/* =========================================================
   移动端二级菜单 - 带淡入+滑下动画
   ========================================================= */
.mobile-sub-menu {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-8px);
  transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.35s ease,
              transform 0.35s ease;
  padding-left: 20rem;
}

.mobile-sub-menu.open {
  max-height: 500rem;
  opacity: 1;
  transform: translateY(0);
}

/* 子菜单项逐个淡入（级联效果） */
.mobile-sub-link {
  display: block !important;
  padding: 10rem 0 !important;
  color: rgba(255, 255, 255, 0.6) !important;
  font-size: 16rem !important;
  font-weight: 300 !important;
  text-decoration: none !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03) !important;
  letter-spacing: 0.5rem !important;
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.3s ease,
              transform 0.3s ease,
              color 0.3s ease;
}

.mobile-sub-menu.open .mobile-sub-link {
  opacity: 1;
  transform: translateX(0);
}

/* 级联延迟 */
.mobile-sub-menu.open .mobile-sub-link:nth-child(1) { transition-delay: 0.04s; }
.mobile-sub-menu.open .mobile-sub-link:nth-child(2) { transition-delay: 0.08s; }
.mobile-sub-menu.open .mobile-sub-link:nth-child(3) { transition-delay: 0.12s; }
.mobile-sub-menu.open .mobile-sub-link:nth-child(4) { transition-delay: 0.16s; }
.mobile-sub-menu.open .mobile-sub-link:nth-child(5) { transition-delay: 0.20s; }

.mobile-sub-link:hover {
  color: var(--red) !important;
}

.mobile-sub-link {
  display: block !important;
  padding: 10rem 0 !important;
  color: rgba(255, 255, 255, 0.6) !important;
  font-size: 16rem !important;
  font-weight: 300 !important;
  text-decoration: none !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03) !important;
  letter-spacing: 0.5rem !important;
}

.mobile-sub-link:hover {
  color: var(--red) !important;
}
/* =========================================================
   汉堡菜单 - 更舒适的靠左样式
   ========================================================= */
.mobile-nav {
  padding: 0 !important;
}

.mobile-nav nav {
  display: flex !important;
  flex-direction: column !important;
  align-items: flex-start !important;
  width: 100% !important;
  padding: 0 28rem !important;  /* 左右留出呼吸空间 */
  margin-top: 20rem !important;
}

.mobile-menu-item {
  width: 100% !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05) !important;
}

.mobile-menu-link {
  display: flex !important;
  justify-content: space-between !important;
  align-items: center !important;
  padding: 16rem 0 !important;
  color: rgba(255, 255, 255, 0.9) !important;
  font-size: 20rem !important;
  font-weight: 400 !important;
  text-decoration: none !important;
  letter-spacing: 0.5rem !important;
  width: 100% !important;
  transition: color 0.3s ease !important;
}

.mobile-menu-link:hover {
  color: var(--red) !important;
}

.mobile-menu-link .mobile-arrow {
  font-size: 20rem;
  color: rgba(255, 255, 255, 0.3);
  transition: transform 0.3s ease;
}

.mobile-menu-link .mobile-arrow.open {
  transform: rotate(90deg);
}

/* 二级菜单 - 缩进更明显 */
.mobile-sub-menu {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-6px);
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.3s ease,
              transform 0.3s ease;
  padding-left: 28rem !important;  /* 二级菜单缩进加大 */
}

.mobile-sub-menu.open {
  max-height: 500rem;
  opacity: 1;
  transform: translateY(0);
}

.mobile-sub-link {
  display: block !important;
  padding: 10rem 0 !important;
  color: rgba(255, 255, 255, 0.55) !important;
  font-size: 16rem !important;
  font-weight: 300 !important;
  text-decoration: none !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03) !important;
  letter-spacing: 0.3rem !important;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.3s ease,
              transform 0.3s ease,
              color 0.3s ease;
}

.mobile-sub-menu.open .mobile-sub-link {
  opacity: 1;
  transform: translateX(0);
}

.mobile-sub-menu.open .mobile-sub-link:nth-child(1) { transition-delay: 0.04s; }
.mobile-sub-menu.open .mobile-sub-link:nth-child(2) { transition-delay: 0.08s; }
.mobile-sub-menu.open .mobile-sub-link:nth-child(3) { transition-delay: 0.12s; }
.mobile-sub-menu.open .mobile-sub-link:nth-child(4) { transition-delay: 0.16s; }
.mobile-sub-menu.open .mobile-sub-link:nth-child(5) { transition-delay: 0.20s; }

.mobile-sub-link:hover {
  color: var(--red) !important;
}

/* 电话 */
.mobile-tel {
  margin-top: 32rem !important;
  padding-top: 20rem !important;
  padding-left: 28rem !important;
  border-top: 1px solid rgba(255, 255, 255, 0.08) !important;
  color: rgba(255, 255, 255, 0.4) !important;
  font-size: 14rem !important;
  font-weight: 300 !important;
  text-align: left !important;
  width: 100% !important;
  letter-spacing: 0.5rem !important;
}



/* =========================================================
   搜索弹窗 - 全屏修复 + 居中
   ========================================================= */
.search-overlay {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  width: 100% !important;
  height: 100% !important;
  height: 100dvh !important;
  min-height: 100% !important;
  background: rgba(0, 0, 0, 0.94) !important;
  z-index: 9999 !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  opacity: 0 !important;
  visibility: hidden !important;
  transition: opacity 0.4s ease, visibility 0.4s ease !important;
}

.search-overlay.active {
  opacity: 1 !important;
  visibility: visible !important;
}

/* 关闭按钮 */
.search-close {
  position: absolute !important;
  top: 20px !important;
  right: 24px !important;
  background: none !important;
  border: none !important;
  color: rgba(255, 255, 255, 0.5) !important;
  font-size: 36px !important;
  cursor: pointer !important;
  z-index: 10000 !important;
  padding: 8px !important;
  line-height: 1 !important;
}

.search-modal {
  width: 88% !important;
  max-width: 600px !important;
  padding: 0 !important;
  transform: translateY(0) !important;
  margin: 0 auto !important;
}

.search-form {
  display: flex !important;
  gap: 12px !important;
  border-bottom: 2px solid rgba(255, 255, 255, 0.12) !important;
  padding-bottom: 16px !important;
  width: 100% !important;
}

.search-input {
  flex: 1 !important;
  background: transparent !important;
  border: none !important;
  color: #ffffff !important;
  font-size: 28px !important;
  font-weight: 300 !important;
  outline: none !important;
  padding: 12px 0 !important;
  min-width: 0 !important;
  width: auto !important;
}

.search-input::placeholder {
  color: rgba(255, 255, 255, 0.25) !important;
  font-weight: 200 !important;
}

.search-submit {
  background: var(--red, #f12a09) !important;
  border: none !important;
  color: #fff !important;
  padding: 12px 32px !important;
  border-radius: 6px !important;
  cursor: pointer !important;
  font-size: 16px !important;
  font-weight: 500 !important;
  flex-shrink: 0 !important;
  white-space: nowrap !important;
}

.search-hint {
  text-align: center !important;
  margin-top: 24px !important;
  color: rgba(255, 255, 255, 0.15) !important;
  font-size: 13px !important;
  font-weight: 300 !important;
  letter-spacing: 2px !important;
}

/* 手机端微调 */
@media (max-width: 480px) {
  .search-input {
    font-size: 20px !important;
  }
  
  .search-submit {
    padding: 10px 20px !important;
    font-size: 14px !important;
  }
  
  .search-close {
    top: 16px !important;
    right: 18px !important;
    font-size: 30px !important;
  }
}
/* =========================================================
   汉堡菜单 - 支持滚动
   ========================================================= */
.mobile-nav {
  position: fixed !important;
  inset: 0 !important;
  width: 100% !important;
  height: 100% !important;
  height: 100dvh !important;
  min-height: 100% !important;
  background: rgba(18, 18, 18, 0.98) !important;
  z-index: 300 !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: stretch !important;
  justify-content: flex-start !important;
  opacity: 0 !important;
  visibility: hidden !important;
  overflow-y: auto !important;
  overflow-x: hidden !important;
  transition: opacity 0.45s ease, visibility 0.45s ease !important;
  padding-top: 60rem !important;
  padding-bottom: 40rem !important;
}

.mobile-nav.open {
  opacity: 1 !important;
  visibility: visible !important;
}

/* 菜单内容区域 - 自动撑开 */
.mobile-nav nav {
  display: flex !important;
  flex-direction: column !important;
  align-items: flex-start !important;
  width: 100% !important;
  padding: 0 28rem !important;
  margin-top: 20rem !important;
  flex-shrink: 0 !important;
}

/* 电话 - 保持底部 */
.mobile-tel {
  margin-top: 32rem !important;
  padding-top: 20rem !important;
  padding-left: 28rem !important;
  border-top: 1px solid rgba(255, 255, 255, 0.08) !important;
  color: rgba(255, 255, 255, 0.4) !important;
  font-size: 14rem !important;
  font-weight: 300 !important;
  text-align: left !important;
  width: 100% !important;
  letter-spacing: 0.5rem !important;
  flex-shrink: 0 !important;
}

/* 关闭按钮固定 */
.mobile-close {
  position: fixed !important;
  top: 16rem !important;
  right: 20rem !important;
  z-index: 10 !important;
}

/* 美化滚动条（可选） */
.mobile-nav::-webkit-scrollbar {
  width: 3px !important;
}

.mobile-nav::-webkit-scrollbar-track {
  background: transparent !important;
}

.mobile-nav::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2) !important;
  border-radius: 10px !important;
}

.mobile-nav::-webkit-scrollbar-thumb:hover {
  background: var(--red, #f12a09) !important;
}
/* ================= 手机端媒体查询（强制单行横排） ================= */
@media (max-width: 768px) {
    h1, h2, h3 {
   text-wrap: auto !important; 
}
    /* 强制父级为横向 Flex 且绝不换行 */
    .nynavbox {
        display: flex !important;
        flex-direction: row !important;
        flex-wrap: nowrap !important;
        justify-content: flex-start !important;
        align-items: center !important;
        width: 100% !important;
        margin: 15rem auto !important;
        padding: 5rem 15rem !important;
        overflow-x: auto !important;
        white-space: nowrap !important;
        -webkit-overflow-scrolling: touch;
        box-sizing: border-box !important;
    }

    /* 隐藏滚动条 */
    .nynavbox::-webkit-scrollbar {
        display: none !important;
    }

    /* 强制子项取消固定宽度并禁止挤压 */
    .nynavbox .item {
        display: inline-block !important;
        width: auto !important;
        flex-shrink: 0 !important;
        margin: 0 0 0 10rem !important;
    }

    .nynavbox .item:first-child {
        margin-left: 0 !important;
    }

    /* 按钮基础样式与文字禁止换行 */
    .nynavbox .item a {
        display: block !important;
        font-size: 14rem !important;
        padding: 8rem 16rem !important;
        color: #000000 !important;
        border: 1rem solid #0000004a !important;
        background-color: #ffffff !important;
        white-space: nowrap !important;
        box-sizing: border-box !important;
    }

    /* 高亮/选中状态 */
    .nynavbox .item.active a,
    .nynavbox .item a:active {
        background-color: #f12a09 !important;
        color: #ffffff !important;
        border-color: #f12a09 !important;
    }
}
/* 1. 外层容器：限制宽度并强制裁剪超出部分 */
.marquee-container-left,
.marquee-container-right {
    width: 100%;
    overflow: hidden; /* 保证绝对不超出盒子 */
    position: relative;
}

/* 2. 动画轨道：横向排列并加载动画 */
.marquee-track {
    display: flex;
    width: max-content;
    animation: marquee-scroll 25s linear infinite; /* 25s 可调节滚动速度 */
}

/* 悬停自动暂停 */
.marquee-track:hover {
    animation-play-state: paused;
}

.marquee-item {
    flex-shrink: 0;
    padding: 0 15px; /* 图片两侧间距 */
}

.marquee-item img {
    height: 40px; /* 限制图片统一高度，防止撑大容器 */
    width: auto;
    display: block;
}

/* 3. 核心循环动画 */
@keyframes marquee-scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%); /* 平移 50% 后瞬间重置，实现无缝对接 */
    }
}