/* ============================================================
   FuturePal 官网 - Phase 1 样式表
   设计系统 + 导航栏 + Hero + 页脚
   ============================================================ */

/* ============================================================
   设计令牌
   ============================================================ */
:root {
  /* 色彩 - 浅灰白色调 */
  --color-bg-primary: #F5F5F7;
  --color-bg-secondary: #FFFFFF;
  --color-bg-card: #FFFFFF;
  --color-bg-elevated: #F0F0F2;

  --color-text-primary: #1D1D1F;
  --color-text-secondary: #6E6E73;
  --color-text-light: #86868B;

  --color-accent: #0071E3;
  --color-accent-hover: #0077ED;
  --color-accent-warm: #FED7AA;
  --color-accent-blue: #0071E3;

  --color-gradient-start: #0071E3;
  --color-gradient-end: #00C6FB;
  --color-border: #D2D2D7;
  --color-glow: rgba(0, 113, 227, 0.12);

  /* 字体 */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'Helvetica Neue', Arial, sans-serif;

  /* 间距 */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;

  /* 容器 */
  --container-max: 1200px;
  --container-padding: 24px;

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  /* 过渡 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

/* ============================================================
   全局样式
   ============================================================ */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
  list-style: none;
}

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

/* ============================================================
   按钮
   ============================================================ */
.btn-primary {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.4;
  transition: all var(--transition-normal);
  border: none;
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--color-accent);
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.4;
  border: 1.5px solid var(--color-accent);
  transition: all var(--transition-normal);
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
}

.btn-secondary:hover {
  background: rgba(0, 113, 227, 0.08);
  transform: translateY(-1px);
}

.btn-secondary:active {
  transform: translateY(0);
}

.btn-large {
  padding: 16px 36px;
  font-size: 16px;
}

/* 文字链接按钮 */
.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-accent);
  font-size: 16px;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.btn-link:hover {
  gap: 10px;
}

/* ============================================================
   导航栏
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  transition: background var(--transition-normal), border-color var(--transition-normal);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  border-bottom-color: var(--color-border);
}

/* 导航栏背景随区块变化（苹果风格） */
.site-header[data-bg="light"] {
  background: rgba(255, 255, 255, 0.75);
}

.site-header[data-bg="dark"] {
  background: rgba(29, 29, 31, 0.75);
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

.site-header[data-bg="dark"] .nav-link {
  color: rgba(255, 255, 255, 0.8);
}

.site-header[data-bg="dark"] .nav-link:hover {
  color: #fff;
}

.site-header[data-bg="dark"] .nav-link::after {
  background: #fff;
}

.site-header[data-bg="dark"] .logo-img {
  filter: brightness(0) invert(1);
}

.site-header[data-bg="blue"] {
  background: rgba(0, 113, 227, 0.75);
  border-bottom-color: rgba(0, 113, 227, 0.3);
}

.site-header[data-bg="blue"] .nav-link {
  color: rgba(255, 255, 255, 0.9);
}

.site-header[data-bg="blue"] .nav-link:hover {
  color: #fff;
}

.site-header[data-bg="blue"] .nav-link::after {
  background: #fff;
}

.site-header[data-bg="blue"] .logo-img {
  filter: brightness(0) invert(1);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

/* Logo */
.logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.logo-img {
  height: 40px;
  width: auto;
  display: block;
}

/* 头部右侧操作区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

/* 语言切换 - 文字形式 */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 6px;
}

.lang-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.lang-text.active {
  color: var(--color-accent);
  font-weight: 500;
}

.lang-divider {
  color: var(--color-border);
  font-size: 14px;
}

/* 导航链接 */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-link {
  font-size: 15px;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  padding: 4px 0;
}

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

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

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

/* 汉堡菜单按钮 */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 110;
  min-width: 40px;
  min-height: 40px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: all var(--transition-normal);
  transform-origin: center;
}

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

.menu-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.is-active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================================
   Hero 主视觉 - 背景图布局
   ============================================================ */
.product-hero {
  background: linear-gradient(to right, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.3) 50%, transparent 100%),
              url('../images/products/product_hero.jpg') no-repeat left center;
  background-size: 100% auto;
  background-position: left center;
  padding: 80px 0;
  min-height: 600px;
  display: flex;
  align-items: center;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 40px;
  align-items: center;
  width: 100%;
}

/* 左侧文字内容 */
.hero-text {
  display: flex;
  flex-direction: column;
  gap: 28px;
  position: relative;
  z-index: 1;
  width: 420px;
  flex-shrink: 0;
}

.hero-text p {
  white-space: nowrap;
}

.hero-header {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hero-main-title {
  font-size: 48px;
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.2;
  margin: 0;
  letter-spacing: 0.02em;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.hero-sub-title {
  font-size: 24px;
  font-weight: 500;
  color: rgba(255,255,255,0.9);
  margin: 0;
  line-height: 1.4;
  text-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

/* 圆角边框按钮 */
.hero-action {
  display: flex;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border: 1.5px solid #FFFFFF;
  border-radius: 24px;
  font-size: 14px;
  color: #FFFFFF;
  text-decoration: none;
  background: transparent;
  transition: all 0.3s ease;
  width: fit-content;
}

.btn-outline:hover {
  background: #FFFFFF;
  color: #1A1A1A;
}

.btn-arrow {
  transition: transform 0.3s ease;
}

.btn-outline:hover .btn-arrow {
  transform: translateX(4px);
}

/* 愿景文案 */
.hero-vision {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.hero-vision p {
  font-size: 13px;
  color: rgba(255,255,255,0.85);
  line-height: 1.7;
  margin: 0;
  text-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* 标签组 */
.hero-tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.tag {
  padding: 8px 20px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 20px;
  font-size: 14px;
  color: #FFFFFF;
  line-height: 1;
  transition: all 0.2s ease;
  backdrop-filter: blur(4px);
}

.tag:hover {
  background: rgba(255,255,255,0.25);
  border-color: rgba(255,255,255,0.5);
}

/* 右侧产品视觉 - 隐藏，因为现在是背景图 */
.hero-visual {
  display: none;
}

/* 响应式 */
@media (max-width: 1023px) {
  .product-hero {
    padding: 80px 0;
    min-height: auto;
  }
  .hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .hero-main-title {
    font-size: 36px;
  }
  .hero-sub-title {
    font-size: 20px;
  }
}

@media (max-width: 767px) {
  .product-hero {
    background-position: left center;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-visual {
    display: none;
  }
  .hero-main-title {
    font-size: 32px;
  }
  .hero-text {
    text-align: center;
    align-items: center;
  }
  .hero-vision {
    text-align: center;
  }
  .hero-tags {
    justify-content: center;
  }
}

/* ============================================================
   页脚 - 新布局
   ============================================================ */
.site-footer {
  background: #FFFFFF;
  color: #333333;
  padding-top: 48px;
  border-top: 1px solid #F0F0F0;
}

/* 主区域：链接区自适应，二维码与社交固定宽度 */
.footer-main {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 48px;
  align-items: start;
  padding-bottom: 40px;
}

/* 六列链接网格 */
.footer-links {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px 32px;
}

.link-column h3 {
  font-size: 14px;
  font-weight: 600;
  color: #1A1A1A;
  margin: 0 0 16px;
}

.link-column ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.link-column a {
  font-size: 13px;
  color: #666666;
  text-decoration: none;
  line-height: 1.5;
  transition: color 0.2s ease;
}

.link-column a:hover {
  color: #4A90E2;
}

/* 二维码区 */
.footer-qr {
  display: flex;
  gap: 24px;
}

.qr-item {
  margin: 0;
  text-align: center;
}

.qr-placeholder {
  width: 100px;
  height: 100px;
  background: #E8E8E8;
  border-radius: 4px;
  display: block;
  overflow: hidden;
}

.qr-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.qr-item figcaption {
  font-size: 12px;
  color: #666666;
  margin-top: 8px;
  white-space: nowrap;
}

/* 社交媒体区 */
.footer-social h3 {
  font-size: 14px;
  font-weight: 600;
  color: #1A1A1A;
  margin: 0 0 16px;
}

.social-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 16px;
}

.social-list a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: #333333;
  transition: color 0.2s ease, transform 0.2s ease;
}

.social-list a:hover {
  color: #4A90E2;
  transform: translateY(-2px);
}

/* 公共图标样式 */
[class*="icon-"] {
  display: inline-block;
  width: 20px;
  height: 20px;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  filter: invert(20%) sepia(0%) saturate(0%) hue-rotate(0deg) brightness(0%);
  transition: filter 0.2s ease;
}

.social-list a:hover [class*="icon-"] {
  filter: invert(30%) sepia(50%) saturate(500%) hue-rotate(180deg) brightness(0.8);
}

.icon-xiaohongshu {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23333'%3E%3Cpath d='M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm0 18c-4.42 0-8-3.58-8-8s3.58-8 8-8 8 3.58 8 8-3.58 8-8 8zm-1-13h2v6h-2zm0 8h2v2h-2z'/%3E%3C/svg%3E");
}

.icon-weibo {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23333'%3E%3Cpath d='M10.098 20.323c-3.977.391-7.414-2.656-7.7-6.647-.285-3.992 2.758-7.46 6.838-7.763 4.081-.302 7.457 2.682 7.582 6.695.125 4.012-2.92 7.427-6.72 7.715zm3.786-9.97c-1.16-.16-2.24-.02-3.07.38.95.57 1.38 1.62.91 2.66-.47 1.04-1.62 1.68-2.69 1.32-1.07-.36-1.42-1.52-.87-2.48.55-.96 1.65-1.52 2.76-1.23 1.11.29 1.92 1.19 1.98 2.34.06 1.15-.54 2.24-1.53 2.78-.99.54-2.27.49-3.21-.17-1.09-.76-1.22-2.43-.38-3.5.84-1.06 2.52-1.24 3.62-.6 1.11.64 1.73 1.91 1.55 3.19-.18 1.28-1.13 2.37-2.38 2.73-1.25.36-2.62.03-3.45-.91-1.21-1.38-.99-3.59.52-4.82 1.51-1.23 3.85-1.33 5.45-.22 1.6 1.11 1.97 3.29.84 4.87-.51.7-1.26 1.18-2.07 1.42 1.21.7 2.63.92 3.94.47 1.32-.45 2.29-1.59 2.49-2.95.2-1.36-.35-2.76-1.42-3.58z'/%3E%3C/svg%3E");
}

.icon-wechat {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23333'%3E%3Cpath d='M8.69 7.93c-1.09-.03-2.08.57-2.39 1.5-.31.93-.02 1.93.71 2.52C7.59 12.42 8.37 13 8.69 13.76c.32.76.04 1.67-.7 2.18-.74.51-1.77.54-2.58.07-.81-.47-1.25-1.46-1.08-2.37.17-.91 1.03-1.59 1.96-1.56.93.03 1.69.73 1.78 1.65.09.92-.43 1.8-1.3 2.21-.87.41-2.03.27-2.81-.35-1.14-.91-1.19-2.63-.12-3.67 1.07-1.04 2.82-1.34 4.22-.71 1.4.63 2.19 2.15 1.9 3.65-.13.7-.53 1.31-1.12 1.72.98.54 2.14.66 3.19.25 1.05-.41 1.83-1.36 2.05-2.48.22-1.12-.27-2.29-1.21-2.95-.94-.66-2.24-.76-3.28-.24-1.04.52-1.68 1.64-1.61 2.83.07 1.19.89 2.23 2.05 2.61 1.16.38 2.46-.05 3.23-.93.77-.88.89-2.16.31-3.21-.58-1.05-1.81-1.63-3.06-1.46z'/%3E%3C/svg%3E");
}

.icon-douyin {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23333'%3E%3Cpath d='M19.59 6.69a4.83 4.83 0 0 1-3.77-4.25V2h-3.45v13.67a2.89 2.89 0 0 1-5.2 1.74 2.89 2.89 0 0 1 2.31-4.64 2.93 2.93 0 0 1 .88.13V9.4a6.84 6.84 0 0 0-1-.05A6.33 6.33 0 0 0 5 15.16a6.34 6.34 0 0 0 10.86 3.76v-3.1a8.06 8.06 0 0 0 3.77.9z'/%3E%3C/svg%3E");
}

/* 底部版权栏 */
.footer-bottom {
  border-top: 1px solid #E5E5E5;
  padding: 20px 0;
}

.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.copyright {
  font-size: 12px;
  color: #999999;
  margin: 0;
}

.copyright a {
  color: #999999;
  text-decoration: none;
}

.copyright a:hover {
  color: #666666;
}

.copyright .divider,
.locale-switcher .divider {
  margin: 0 6px;
  color: #CCCCCC;
}

.locale-switcher {
  font-size: 12px;
  color: #999999;
  display: flex;
  align-items: center;
  gap: 4px;
}

.locale-switcher button {
  background: none;
  border: none;
  padding: 0;
  font-size: 12px;
  color: #999999;
  cursor: pointer;
}

.locale-switcher button:hover {
  color: #333333;
}

/* 响应式 */
@media (max-width: 1023px) {
  .footer-main {
    grid-template-columns: 1fr auto;
    gap: 32px;
  }
  .footer-links {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .footer-qr {
    flex-direction: column;
    gap: 16px;
  }
}

@media (max-width: 767px) {
  .footer-main {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-links {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-bottom .container {
    flex-direction: column;
    text-align: center;
  }
  .copyright {
    order: 2;
  }
}

/* ============================================================
   通用 Section
   ============================================================ */

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.5px;
}

.section-desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

.section-link {
  font-size: 14px;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color var(--transition-fast);
}

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

/* ============================================================
   图片占位替换样式
   ============================================================ */

.product-placeholder img,
.product-image img,
.about-visual img,
.news-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

/* ============================================================
   产品展示
   ============================================================ */

.products-section {
  padding: 60px 0 80px;
  background: #FFFFFF;
}

/* Header 品牌区 */
.products-header {
  text-align: center;
  margin-bottom: 48px;
}

.products-logo {
  margin-bottom: 16px;
}

.products-logo img,
.products-logo svg {
  margin: 0 auto;
  display: block;
}

.products-brand-name {
  font-size: 28px;
  font-weight: 600;
  color: #1A1A1A;
  margin-bottom: 20px;
}

.products-brand-en {
  font-weight: 400;
  color: #666666;
  margin-left: 8px;
}

.products-divider {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, #4A90E2, #357ABD);
  margin: 0 auto 24px;
}

.products-brand-desc {
  font-size: 15px;
  color: #666666;
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto;
}

/* Hero 三栏网格 */
.hero-grid {
  display: grid;
  grid-template-columns: 220px 1fr 260px;
  gap: 32px;
  align-items: stretch;
  height: 480px; /* 三栏统一高度：原高度约240px的2/3，与右侧等高 */
  margin-bottom: 48px;
}

/* 左侧蓝色卡片 */
.sidebar-card {
  background: linear-gradient(135deg, #4A90E2 0%, #357ABD 100%);
  border-radius: 16px;
  padding: 32px 24px;
  color: white;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.sidebar-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 24px;
  color: #fff;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar-item {
  display: block;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
  cursor: pointer;
}

.sidebar-item:hover,
.sidebar-item.active {
  background: rgba(255, 255, 255, 0.25);
  color: #fff;
}

/* 主产品图容器 */
.main-product {
  background: #F5F5F7;
  border-radius: 24px;
  padding: 40px;
  text-align: center;
  position: relative;
  height: 100%; /* 跟随父组件hero-grid高度 */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  /* 阴影效果：整个容器有阴影，图片在阴影内，文字在阴影外 */
  box-shadow: inset 0 4px 20px rgba(0, 0, 0, 0.08);
}

.main-product-image {
  margin-bottom: 24px;
  width: 100%;
  height: calc(100% - 80px); /* 跟随父容器高度，保留底部info空间 */
  display: flex;
  align-items: center;
  justify-content: center;
  /* 移除阴影，阴影已移到父容器 */
  background: transparent;
  border-radius: 20px;
}

.main-product-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.main-product-info {
  position: absolute;
  bottom: 16px;
  left: 0;
  right: 0;
  text-align: center;
}

.main-product-name {
  font-size: 22px;
  font-weight: 700;
  color: #1A1A1A;
  margin-bottom: 8px;
}

.main-product-desc {
  font-size: 14px;
  color: #555555;
}

/* Hero 箭头按钮 */
.hero-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 1px solid #E0E0E0;
  color: #1A1A1A;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  z-index: 2;
}

.hero-arrow:hover {
  background: #4A90E2;
  color: #fff;
  border-color: #4A90E2;
}

.hero-prev {
  left: 16px;
}

.hero-next {
  right: 16px;
}

/* 右侧辅助产品 */
.side-product {
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%; /* 跟随父组件hero-grid高度 */
}

.side-product-image {
  width: 100%;
  height: calc(100% - 60px); /* 保留底部文字空间，跟随父容器高度 */
  margin-bottom: 16px;
  border-radius: 20px;
  background: linear-gradient(145deg, #E0E0E0, #F0F0F0);
  box-shadow: inset 0 4px 20px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.side-product-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.side-product-name {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: #1A1A1A;
  margin-bottom: 6px;
}

.side-product-desc {
  font-size: 13px;
  color: #999999;
}

/* Product Line 产品矩阵 - 全宽 */
.product-matrix {
  width: 100%;
  padding: 40px 0;
  border-top: 1px solid #EEEEEE;
  background: #fff;
}

.matrix-image-single {
  width: 100%;
  height: auto;
  display: block;
}

.matrix-item {
  text-align: center;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.matrix-item:hover {
  transform: translateY(-4px);
}

.matrix-image {
  width: 100px;
  height: 100px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, #F8F8F8, #F0F0F0);
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  transition: box-shadow 0.2s ease;
}

.matrix-item:hover .matrix-image {
  box-shadow: 0 8px 20px rgba(74, 144, 226, 0.2);
}

.matrix-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.matrix-name {
  font-size: 13px;
  color: #555555;
  font-weight: 500;
}

/* ============================================================
   知尾品牌引言区
   ============================================================ */

.brand-intro-section {
  padding: 80px 0;
  background: var(--color-bg-secondary);
  text-align: center;
}

.brand-intro-container {
  max-width: 680px;
}

.brand-intro-header {
  margin-bottom: 32px;
}

.brand-intro-logo {
  margin-bottom: 16px;
}

.brand-intro-logo svg {
  margin: 0 auto;
}

.brand-intro-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: 0.5px;
}

.brand-intro-vision,
.brand-intro-mission,
.brand-intro-founders {
  margin-bottom: 24px;
}

.brand-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.brand-vision-text,
.brand-mission-text,
.brand-founders-text {
  font-size: 18px;
  color: var(--color-text-primary);
  font-weight: 500;
  line-height: 1.5;
}

.brand-intro-desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.9;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.brand-intro-desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  max-width: 560px;
  margin: 0 auto;
}

/* ============================================================
   产品展示 - 整体轮播布局
   ============================================================ */

.product-showcase {
  display: flex;
  gap: 24px;
  align-items: stretch;
  margin-bottom: 48px;
  min-height: 460px;
}

/* 左侧蓝卡片 */
.showcase-sidebar {
  background: var(--color-accent);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  color: #fff;
  width: 200px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

.sidebar-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 24px;
  color: #fff;
}

.sidebar-tabs {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar-tab {
  display: block;
  width: 100%;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: left;
}

.sidebar-tab:hover,
.sidebar-tab.active {
  background: rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.5);
}

/* 轮播舞台：包含中间大图 + 右侧预览 */
.showcase-stage {
  flex: 1;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
}

.stage-track {
  position: relative;
  flex: 1;
  min-height: 0;
}

.stage-slide {
  display: none;
  width: 100%;
  height: 100%;
  padding: 32px 80px 0;
  grid-template-columns: 1fr 200px;
  gap: 32px;
  align-items: center;
}

.stage-slide.active {
  display: grid;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* 中间主图区 */
.stage-main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.stage-image {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: linear-gradient(135deg, #E8E8ED, #F5F5F7);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 20px;
}

.stage-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.stage-info {
  text-align: center;
}

.stage-product-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.stage-product-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 360px;
}

/* 右侧预览卡片 */
.stage-preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.preview-image {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: linear-gradient(135deg, #E8E8ED, #F5F5F7);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 2px solid var(--color-border);
  transition: all var(--transition-normal);
}

.preview-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.preview-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-align: center;
}

/* 轮播箭头 */
.stage-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  z-index: 2;
}

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

.stage-prev {
  left: 20px;
}

.stage-next {
  right: 20px;
}

/* 更多产品：一张整体横图 */
.more-products {
  width: 100%;
}

.more-products-image {
  width: 100%;
  height: 220px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #E8E8ED, #F5F5F7);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.more-products-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ============================================================
   FuturePal 品牌过渡区
   ============================================================ */

.futurepal-brand-section {
  padding: 60px 0;
  background: var(--color-bg-primary);
  text-align: center;
}

.futurepal-logo-text {
  font-size: 48px;
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: 2px;
  margin-bottom: 8px;
}

.futurepal-subtitle {
  font-size: 20px;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.futurepal-tagline {
  font-size: 14px;
  color: var(--color-text-light);
  margin-top: 12px;
}

/* ============================================================
   品牌介绍 - 新布局
   ============================================================ */

.page-header {
  padding: 0;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 32px 0 16px;
}

.logo {
  height: 48px;
  width: auto;
}

.company-address {
  font-style: normal;
  font-size: 13px;
  color: #333;
  text-align: right;
  max-width: 200px;
  line-height: 1.5;
}

.header-divider {
  border: none;
  border-top: 1px solid #E0E0E0;
  margin: 0;
}

.page-main {
  padding: 48px 0 80px;
}

/* 上部分：标题 + 三栏简介 */
.intro-section {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 64px;
  padding-bottom: 64px;
  align-items: start;
}

.company-title {
  font-size: 42px;
  font-weight: 600;
  color: #1A1A1A;
  letter-spacing: 0.1em;
  line-height: 1.2;
  margin: 0;
  position: sticky;
  top: 48px;
}

.intro-content {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.info-block h2 {
  font-size: 16px;
  font-weight: 600;
  color: #1A1A1A;
  margin: 0 0 12px;
}

.info-block p {
  font-size: 14px;
  color: #666;
  line-height: 1.8;
  margin: 0;
  text-align: justify;
}

/* 下部分：详情 + 大图 */
.detail-section {
  display: grid;
  grid-template-columns: 1fr 520px;
  gap: 48px;
  padding-bottom: 80px;
  align-items: start;
}

.detail-text {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.detail-block h3 {
  font-size: 15px;
  font-weight: 600;
  color: #1A1A1A;
  margin: 0 0 10px;
}

.detail-block p {
  font-size: 13px;
  color: #777;
  line-height: 1.8;
  margin: 0;
  text-align: justify;
}

.detail-visual {
  margin: 0;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.detail-visual img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* 响应式 */
@media (max-width: 1023px) {
  .intro-section {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .company-title {
    position: static;
    text-align: center;
  }
  .detail-section {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .detail-visual {
    order: -1;
  }
}

@media (max-width: 767px) {
  .header-inner {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }
  .company-address {
    text-align: center;
    font-size: 12px;
  }
  .company-title {
    font-size: 32px;
  }
  .page-main {
    padding: 32px 0 60px;
  }
}

/* ============================================================
   最新资讯 Banner
   ============================================================ */

.news-banner {
  position: relative;
  width: 100%;
  max-width: 1200px;
  aspect-ratio: 16 / 9;
  border-radius: 16px;
  overflow: hidden;
  color: #FFFFFF;
  isolation: isolate;
  margin: 0 auto;
}

/* 背景图层 */
.banner-media {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.banner-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: right center;
  display: block;
}

/* 蒙版层：从左到右由实到透 */
.banner-mask {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(
    to right,
    rgba(0, 0, 0, 0.65) 0%,
    rgba(0, 0, 0, 0.55) 35%,
    rgba(0, 0, 0, 0.20) 55%,
    rgba(0, 0, 0, 0) 70%
  );
  pointer-events: none;
}

/* 文字内容层：位于蒙版之上 */
.banner-content {
  position: relative;
  z-index: 3;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 40px 48px;
  box-sizing: border-box;
}

/* 顶部标题区 */
.banner-header {
  max-width: 320px;
}

.banner-title {
  font-size: 32px;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin: 0 0 8px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.title-arrow {
  display: inline-flex;
  opacity: 0.9;
  transition: transform 0.3s ease;
}

.news-banner:hover .title-arrow {
  transform: translateX(4px);
}

.banner-subtitle {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  margin: 0;
  letter-spacing: 0.02em;
}

/* 底部正文区 */
.banner-body {
  max-width: 360px;
}

.body-title {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 12px;
  letter-spacing: 0.03em;
}

.body-text p {
  font-size: 13px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.7);
  margin: 0 0 10px;
  text-align: justify;
}

.body-text p:last-child {
  margin-bottom: 0;
}

/* 响应式 */
@media (max-width: 1023px) {
  .news-banner {
    aspect-ratio: 16 / 10;
    border-radius: 12px;
  }
  .banner-mask {
    background: linear-gradient(
      to right,
      rgba(0,0,0,0.70) 0%,
      rgba(0,0,0,0.50) 50%,
      rgba(0,0,0,0.20) 75%,
      rgba(0,0,0,0) 100%
    );
  }
  .banner-content {
    padding: 32px;
  }
  .banner-title {
    font-size: 28px;
  }
  .banner-body {
    max-width: 280px;
  }
}

@media (max-width: 767px) {
  .news-banner {
    aspect-ratio: 3 / 4;
    border-radius: 12px;
  }
  .banner-bg-img {
    object-position: center top;
  }
  .banner-mask {
    background: linear-gradient(
      to top,
      rgba(0,0,0,0.80) 0%,
      rgba(0,0,0,0.60) 40%,
      rgba(0,0,0,0.20) 65%,
      rgba(0,0,0,0) 85%
    );
  }
  .banner-content {
    justify-content: flex-end;
    padding: 24px;
    text-align: center;
  }
  .banner-header,
  .banner-body {
    max-width: 100%;
  }
  .body-text p {
    text-align: left;
  }
}

/* ============================================================
   招贤纳士
   ============================================================ */

.careers-section {
  display: none; /* 暂时隐藏 */
  padding: 80px 0;
  background: var(--color-bg-primary);
  text-align: center;
}

.careers-desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.careers-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============================================================
   联系我们 - 全图蒙版布局
   ============================================================ */

.contact-section {
  display: grid;
  gap: 24px;
  padding: 40px 0;
  max-width: 1200px;
  margin: 0 auto;
}

/* 上部大卡片 */
.card-large {
  width: 100%;
  aspect-ratio: 21 / 9;
  border-radius: 16px;
}

/* 下部双栏 */
.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.card-medium {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 16px;
}

/* 卡片内部三层叠加 */
.media-card {
  position: relative;
  overflow: hidden;
  color: #FFFFFF;
  isolation: isolate;
  cursor: pointer;
}

.card-media {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.card-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
}

.card-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: rgba(0, 0, 0, 0.35);
  pointer-events: none;
  transition: background 0.4s ease;
}

.media-card:hover .card-overlay {
  background: rgba(0, 0, 0, 0.45);
}

.card-content {
  position: relative;
  z-index: 3;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 32px;
  box-sizing: border-box;
}

.content-header {
  margin-bottom: 24px;
}

.card-title {
  font-size: 32px;
  font-weight: 500;
  letter-spacing: 0.08em;
  margin: 0 0 10px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.card-subtitle {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
  letter-spacing: 0.02em;
}

.play-btn {
  background: none;
  border: none;
  color: #FFFFFF;
  cursor: pointer;
  padding: 8px;
  line-height: 0;
  border-radius: 50%;
  transition: transform 0.3s ease, filter 0.3s ease;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.3));
}

.play-btn:hover {
  transform: scale(1.1);
  filter: drop-shadow(0 6px 16px rgba(0,0,0,0.4));
}

.play-btn:focus-visible {
  outline: 2px solid #FFFFFF;
  outline-offset: 4px;
}

.play-btn svg {
  display: block;
  width: 48px;
  height: 48px;
}

.card-large .card-content {
  justify-content: center;
  gap: 20px;
}

.card-large .content-header {
  margin-bottom: 0;
}

.card-medium .card-content {
  justify-content: center;
  gap: 16px;
}

.card-medium .card-title {
  font-size: 28px;
}

/* 响应式 */
@media (max-width: 1023px) {
  .card-large {
    aspect-ratio: 16 / 9;
    border-radius: 12px;
  }
  .card-grid {
    gap: 16px;
  }
  .card-medium {
    border-radius: 12px;
  }
  .card-title {
    font-size: 26px;
  }
  .card-medium .card-title {
    font-size: 22px;
  }
}

@media (max-width: 767px) {
  .contact-section {
    gap: 16px;
  }
  .card-grid {
    grid-template-columns: 1fr;
  }
  .card-medium {
    aspect-ratio: 16 / 10;
  }
  .card-title {
    font-size: 24px;
  }
  .card-subtitle {
    font-size: 13px;
  }
  .play-btn svg {
    width: 40px;
    height: 40px;
  }
}

/* ============================================================
   动画
   ============================================================ */

/* 产品图浮动 */
@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-18px);
  }
}

/* 滚动指示器弹跳 */
@keyframes scrollBounce {
  0%,
  100% {
    top: 6px;
    opacity: 1;
  }
  50% {
    top: 16px;
    opacity: 0.3;
  }
}

/* 滚动渐入 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.reveal-delay-1 {
  transition-delay: 0.1s;
}

.reveal-delay-2 {
  transition-delay: 0.2s;
}

.reveal-delay-3 {
  transition-delay: 0.3s;
}

.reveal-delay-4 {
  transition-delay: 0.4s;
}

/* 减少动效 */
.reduce-motion *,
.reduce-motion *::before,
.reduce-motion *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
}

/* ============================================================
   响应式 - 移动端 (< 768px)
   ============================================================ */
@media (max-width: 767px) {
  /* 容器 */
  :root {
    --container-padding: 16px;
  }

  /* 导航 */
  .header-actions {
    gap: var(--spacing-sm);
  }

  /* 移动端语言切换显示为文字 */
  .lang-switcher {
    display: flex;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-bg-secondary);
    flex-direction: column;
    align-items: flex-start;
    padding: 100px var(--spacing-xl) var(--spacing-xl);
    gap: var(--spacing-md);
    transition: right var(--transition-normal);
    z-index: 105;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
  }

  .nav-menu.is-open {
    right: 0;
  }

  .nav-link {
    font-size: 17px;
  }

  /* 移动端深色导航栏文字颜色 */
  .site-header[data-bg="dark"] .nav-link,
  .site-header[data-bg="blue"] .nav-link {
    color: rgba(255, 255, 255, 0.85);
  }

  .site-header[data-bg="dark"] .nav-link:hover,
  .site-header[data-bg="blue"] .nav-link:hover {
    color: #fff;
  }

  /* Hero 移动端 */
  .hero-section {
    padding: 80px 0 60px;
    min-height: auto;
  }

  .hero-container {
    flex-direction: column;
    text-align: center;
    padding-top: 40px;
    gap: var(--spacing-2xl);
  }

  .hero-content {
    max-width: 100%;
    flex: unset;
  }

  .hero-title {
    font-size: 34px;
  }

  .hero-subtitle {
    font-size: 18px;
  }

  .hero-desc {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
    font-size: 15px;
    color: var(--color-text-secondary);
  }

  .hero-vision {
    font-size: 13px;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-tags {
    justify-content: center;
  }

  .hero-visual {
    flex: unset;
    width: 100%;
  }

  .product-glow {
    width: 280px;
    height: 280px;
    filter: blur(40px);
  }

  .product-placeholder {
    width: 280px;
    height: 240px;
  }

  /* 页脚 */
  .footer-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .footer-slogan {
    max-width: 100%;
  }

  .footer-links {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
  }

  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-xs);
  }

  /* 知尾品牌区 */
  .brand-intro-section {
    padding: 48px 0;
  }

  .brand-intro-container {
    max-width: 100%;
    padding: 0 20px;
  }

  .brand-intro-title {
    font-size: 24px;
  }

  .brand-intro-vision,
  .brand-intro-mission,
  .brand-intro-founders {
    margin-bottom: 20px;
  }

  .brand-vision-text,
  .brand-mission-text,
  .brand-founders-text {
    font-size: 16px;
  }

  .brand-intro-desc {
    font-size: 14px;
    line-height: 1.8;
  }

  /* 通用 section */
  .section-title {
    font-size: 28px;
  }

  .products-section,
  .about-section,
  .news-section,
  .careers-section,
  .contact-section,
  .partners-section,
  .futurepal-brand-section {
    padding: 60px 0;
  }

  /* 产品展示 - 移动端 */
  .products-section {
    padding: 40px 0 60px;
  }

  .products-header {
    margin-bottom: 32px;
    padding: 0 16px;
  }

  .products-brand-name {
    font-size: 24px;
  }

  .products-brand-desc {
    font-size: 14px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 0 16px;
  }

  .sidebar-card {
    position: static;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
  }

  .sidebar-title {
    font-size: 16px;
    margin-bottom: 0;
    white-space: nowrap;
  }

  .sidebar-nav {
    flex-direction: row;
    gap: 8px;
  }

  .sidebar-item {
    padding: 8px 12px;
    font-size: 13px;
  }

  .main-product {
    padding: 24px;
    min-height: 300px;
  }

  .main-product-image img {
    max-width: 80%;
  }

  .main-product-name {
    font-size: 18px;
  }

  .main-product-desc {
    font-size: 13px;
  }

  .hero-arrow {
    width: 40px;
    height: 40px;
  }

  .hero-prev {
    left: 8px;
  }

  .hero-next {
    right: 8px;
  }

  .side-product {
    display: none;
  }

  .product-matrix {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    padding: 24px 16px;
  }

  .matrix-item:nth-child(4),
  .matrix-item:nth-child(5) {
    display: none;
  }

  .futurepal-subtitle {
    font-size: 16px;
  }

  /* 产品 */
  .product-grid {
    grid-template-columns: 1fr;
  }

  .product-tabs {
    flex-wrap: wrap;
  }

  /* 品牌 */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-visual {
    height: 240px;
  }

  /* 资讯 */
  .news-grid {
    grid-template-columns: 1fr;
  }

  .news-card-featured .news-image {
    height: 200px;
  }

  /* 合作 */
  .partners-grid {
    grid-template-columns: 1fr;
  }

  /* 联系 */
  .contact-info {
    flex-direction: column;
    gap: 24px;
  }
}

/* ============================================================
   响应式 - 平板 (768px - 1023px)
   ============================================================ */
@media (min-width: 768px) and (max-width: 1023px) {
  .hero-title {
    font-size: 42px;
  }

  .product-placeholder {
    width: 360px;
    height: 300px;
  }

  .footer-container {
    gap: var(--spacing-xl);
  }

  /* 产品展示 - 平板端 */
  .product-showcase {
    gap: 16px;
    min-height: 400px;
  }

  .showcase-sidebar {
    width: 160px;
    padding: 20px 16px;
  }

  .sidebar-title {
    font-size: 18px;
  }

  .stage-slide {
    grid-template-columns: 1fr 160px;
    padding: 24px 60px;
    gap: 20px;
  }

  .stage-image {
    width: 220px;
    height: 220px;
  }

  .preview-image {
    width: 120px;
    height: 120px;
  }

  .stage-arrow {
    width: 40px;
    height: 40px;
  }

  .stage-prev {
    left: 14px;
  }

  .stage-next {
    right: 14px;
  }

  /* 更多产品 */
  .more-products-image {
    height: 180px;
  }

  /* 资讯 */
  .news-grid {
    grid-template-columns: 2fr 1fr;
  }

  .news-card-featured .news-image {
    height: 260px;
  }

  /* 品牌 */
  .about-grid {
    gap: 40px;
  }
}

/* ============================================================
   响应式 - 桌面 (1024px+)
   ============================================================ */
@media (min-width: 1024px) {
  .hero-title {
    font-size: 68px;
  }
}

/* ============================================================
   响应式 - 大屏 (1280px+)
   ============================================================ */
@media (min-width: 1280px) {
  .hero-title {
    font-size: 72px;
  }
}

/* ============================================================
   focus 样式 (无障碍)
   ============================================================ */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}