/* ===== 自托管字体：Outfit（英文/数字用），拉丁子集，每个字重约 14KB ===== */
@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url('assets/fonts/outfit-300.woff2') format('woff2');
}
@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('assets/fonts/outfit-400.woff2') format('woff2');
}
@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('assets/fonts/outfit-500.woff2') format('woff2');
}
@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('assets/fonts/outfit-600.woff2') format('woff2');
}
@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('assets/fonts/outfit-700.woff2') format('woff2');
}
@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url('assets/fonts/outfit-800.woff2') format('woff2');
}

/* ===== 自托管字体：思源宋体（Noto Serif SC / Source Han Serif CN），仅含全站用到的中文子集，约 400KB/字重，SIL OFL 1.1 免费商用 ===== */
@font-face {
  font-family: 'Noto Serif SC';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('assets/fonts/noto-serif-sc-400.woff2') format('woff2');
}
@font-face {
  font-family: 'Noto Serif SC';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('assets/fonts/noto-serif-sc-700.woff2') format('woff2');
}

:root {
      /* Color System — OKLCH-aware with hex fallbacks */
      --navy-900: #071223;
      --navy-800: #0B1F3A;
      --navy-700: #123456;
      --navy-600: #1A4870;
      --navy-500: #2A5C8A;
      /* 品牌锚点色：玻璃冷青。原变量名 gold 系历史遗留，值已改为冷青以去 AI 通用蓝、贴合门窗玻璃属性；仅改此处即全站 37+ 处生效 */
      --gold-500: #4A90E2;
      --gold-400: #6BA3E7;
      --gold-300: #A8C8F0;
      --cream-100: #FAF8F4;
      --cream-200: #F2EFE8;
      --white: #FFFFFF;
      --gray-900: #111827;
      --gray-700: #374151;
      --gray-500: #6B7280;
      --gray-300: #D1D5DB;
      --gray-100: #F3F4F6;
      
      /* Semantic tokens */
      --color-bg: var(--white);
      --color-text: var(--gray-900);
      --color-muted: var(--gray-700);
      --color-accent: var(--gold-500);
      --color-brand: var(--navy-800);
      --color-surface: var(--cream-100);
      
      /* Typography — 中文展示字用思源宋体（Noto Serif SC，自托管子集），英文 Outfit 自托管于 assets/fonts/ */
      --font-display: 'Outfit', 'Noto Serif SC', 'Source Han Serif SC', 'PingFang SC', 'Microsoft YaHei', serif;
      --font-body: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans SC', sans-serif;
      --font-en: 'Outfit', -apple-system, 'Helvetica Neue', Arial, sans-serif;
      
      /* Spacing */
      --space-1: 0.25rem;
      --space-2: 0.5rem;
      --space-3: 0.75rem;
      --space-4: 1rem;
      --space-5: 1.25rem;
      --space-6: 1.5rem;
      --space-8: 2rem;
      --space-10: 2.5rem;
      --space-12: 3rem;
      --space-16: 4rem;
      --space-20: 5rem;
      --space-24: 6rem;
      
      /* Motion */
      --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
      --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
      --duration-fast: 150ms;
      --duration-normal: 300ms;
      --duration-slow: 600ms;
      
      /* Layout */
      --header-height: 4.5rem;
      --container-max: 1280px;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 16px;
      --radius-full: 9999px;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    @media (prefers-reduced-motion: reduce) {
      html {
        scroll-behavior: auto;
      }
      *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
      }
    }

    body {
      font-family: var(--font-body);
      font-size: 1rem;
      line-height: 1.7;
      color: var(--color-text);
      background: var(--color-bg);
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

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

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

    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: none;
    }

    ul, ol {
      list-style: none;
    }

    .visually-hidden {
      position: absolute;
      width: 1px;
      height: 1px;
      padding: 0;
      margin: -1px;
      overflow: hidden;
      clip: rect(0, 0, 0, 0);
      white-space: nowrap;
      border: 0;
    }

    /* Container */
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-inline: auto;
      padding-inline: var(--space-6);
    }

    @media (min-width: 640px) {
      .container {
        padding-inline: var(--space-8);
      }
    }

    @media (min-width: 1024px) {
      .container {
        padding-inline: var(--space-12);
      }
    }

    /* Buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: var(--space-2);
      padding: var(--space-3) var(--space-6);
      font-size: 0.9375rem;
      font-weight: 500;
      border-radius: var(--radius-full);
      transition: transform var(--duration-fast) var(--ease-out-quart),
                  box-shadow var(--duration-fast) var(--ease-out-quart),
                  background-color var(--duration-fast) var(--ease-out-quart);
      will-change: transform;
    }

    .btn-primary {
      background: var(--gold-500);
      color: var(--white);
      box-shadow: 0 4px 14px rgba(74, 144, 226, 0.25);
    }

    .btn-primary:hover {
      background: var(--gold-400);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(74, 144, 226, 0.35);
    }

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

    .btn-outline {
      border: 1px solid rgba(255, 255, 255, 0.4);
      color: var(--white);
      background: rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(8px);
    }

    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.16);
      border-color: rgba(255, 255, 255, 0.6);
    }

    .btn-dark {
      background: var(--navy-800);
      color: var(--white);
    }

    .btn-dark:hover {
      background: var(--navy-700);
      transform: translateY(-2px);
    }

    /* Header */
    .site-header {
      position: fixed;
      inset: 0 0 auto 0;
      z-index: 1000;
      height: var(--header-height);
      display: flex;
      align-items: center;
      transition: background-color var(--duration-normal) var(--ease-out-quart),
                  box-shadow var(--duration-normal) var(--ease-out-quart);
    }

    .site-header.scrolled {
      background: rgba(255, 255, 255, 0.96);
      box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
    }

    .site-header.scrolled .nav-link {
      color: var(--navy-900);
    }

    .site-header.scrolled .nav-cta {
      background: var(--gold-500);
      color: var(--white);
      border-color: transparent;
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }

    .brand {
      display: flex;
      align-items: center;
      position: relative;
      height: 2.25rem;
    }

    .brand-logo {
      height: 2.25rem;
      width: auto;
      object-fit: contain;
      transition: opacity 300ms var(--ease-out-quart);
    }

    .brand-logo-white {
      opacity: 1;
    }

    .brand-logo-color {
      position: absolute;
      left: 0;
      top: 0;
      opacity: 0;
    }

    .site-header.scrolled .brand-logo-white {
      opacity: 0;
    }

    .site-header.scrolled .brand-logo-color {
      opacity: 1;
    }

    .site-nav {
      display: none;
    }

    @media (min-width: 1024px) {
      .site-nav {
        display: flex;
        align-items: center;
        gap: var(--space-8);
      }
    }

    .nav-link {
      font-size: 0.9375rem;
      font-weight: 400;
      color: rgba(255, 255, 255, 0.9);
      position: relative;
      padding-block: var(--space-2);
      transition: color var(--duration-fast) var(--ease-out-quart);
    }

    .nav-link::after {
      content: '';
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      height: 2px;
      background: var(--gold-500);
      transform: scaleX(0);
      transform-origin: right;
      transition: transform var(--duration-normal) var(--ease-out-quart);
    }

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

    .nav-link:hover::after {
      transform: scaleX(1);
      transform-origin: left;
    }

    .nav-cta {
      padding: 0.5rem 1.25rem;
      font-size: 0.875rem;
      line-height: 1;
      white-space: nowrap;
      color: var(--white);
      border: 1px solid rgba(255, 255, 255, 0.4);
      border-radius: 10px;
    }

    .mobile-menu-btn {
      display: flex;
      flex-direction: column;
      gap: 5px;
      padding: var(--space-2);
      color: var(--white);
    }

    .site-header.scrolled .mobile-menu-btn {
      color: var(--navy-900);
    }

    .mobile-menu-btn span {
      display: block;
      width: 24px;
      height: 2px;
      background: currentColor;
      transition: transform var(--duration-normal) var(--ease-out-quart),
                  opacity var(--duration-normal) var(--ease-out-quart);
    }

    @media (min-width: 1024px) {
      .mobile-menu-btn {
        display: none;
      }
    }

    .mobile-nav {
      position: fixed;
      inset: var(--header-height) 0 0 0;
      background: rgba(255, 255, 255, 0.98);
      backdrop-filter: blur(12px);
      padding: var(--space-8);
      transform: translateX(100%);
      transition: transform var(--duration-normal) var(--ease-out-quart);
      z-index: 999;
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
    }

    .mobile-nav.open {
      transform: translateX(0);
    }

    .mobile-nav a {
      display: block;
      padding: var(--space-4) 0;
      font-size: 1.25rem;
      font-weight: 500;
      color: var(--navy-900);
      border-bottom: 1px solid var(--gray-100);
    }

    .mobile-nav a.mobile-nav-sub {
      padding: var(--space-3) 0 var(--space-3) var(--space-6);
      font-size: 1rem;
      font-weight: 400;
      color: var(--gray-500);
    }

    /* Hero */
    .hero {
      position: relative;
      min-height: 100svh;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
      padding-top: var(--header-height);
    }

    /* 大页开屏压缩版：露出下方内容，引导下滑 */
    .hero.hero--compact {
      min-height: 72svh;
    }

    .hero-bg {
      position: absolute;
      inset: 0;
      z-index: -2;
    }

    .hero-bg img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center;
      transform: scale(1.05);
      animation: hero-kenburns 20s ease-in-out infinite alternate;
    }

    @keyframes hero-kenburns {
      from { transform: scale(1.05) translate(0, 0); }
      to { transform: scale(1.12) translate(-1%, -1%); }
    }

    .hero-overlay {
      position: absolute;
      inset: 0;
      z-index: -1;
      background: linear-gradient(
        180deg,
        rgba(7, 18, 35, 0.55) 0%,
        rgba(7, 18, 35, 0.35) 50%,
        rgba(7, 18, 35, 0.65) 100%
      );
    }

    /* 明亮版头图：仅在顶部导航区与底部文字区保留遮罩，中间主体图完全透出，避免灰蒙蒙 */
    .hero.hero--light .hero-overlay {
      background: linear-gradient(
        180deg,
        rgba(7, 18, 35, 0.32) 0%,
        rgba(7, 18, 35, 0.06) 28%,
        rgba(7, 18, 35, 0) 50%,
        rgba(7, 18, 35, 0.12) 72%,
        rgba(7, 18, 35, 0.38) 100%
      );
    }

    .hero.hero--light .hero-bg img {
      filter: brightness(1.10) saturate(1.05);
    }

    .hero.hero--light .hero-content {
      text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
    }

    .hero-content {
      text-align: center;
      color: var(--white);
      max-width: 920px;
      padding-inline: var(--space-6);
    }

    .hero-eyebrow {
      font-family: var(--font-en);
      font-size: clamp(0.875rem, 1.2vw, 1rem);
      font-weight: 500;
      letter-spacing: 0.25em;
      text-transform: uppercase;
      color: var(--gold-400);
      margin-bottom: var(--space-4);
      opacity: 0;
      transform: translateY(20px);
      animation: fade-up 800ms var(--ease-out-expo) 200ms forwards;
    }

    .hero-title {
      font-family: var(--font-display);
      font-size: clamp(2.5rem, 7vw, 5.5rem);
      font-weight: 800;
      line-height: 1.05;
      letter-spacing: -0.02em;
      margin-bottom: var(--space-6);
      opacity: 0;
      transform: translateY(24px);
      animation: fade-up 900ms var(--ease-out-expo) 350ms forwards;
    }

    .hero-title-ch {
      display: block;
      font-family: var(--font-body);
      font-weight: 700;
      font-size: clamp(1.75rem, 4vw, 3rem);
      margin-top: var(--space-3);
      letter-spacing: 0.08em;
    }

    .hero-subtitle {
      font-size: clamp(1rem, 1.6vw, 1.25rem);
      font-weight: 300;
      max-width: 560px;
      margin-inline: auto;
      margin-bottom: var(--space-10);
      color: rgba(255, 255, 255, 0.88);
      opacity: 0;
      transform: translateY(20px);
      animation: fade-up 800ms var(--ease-out-expo) 550ms forwards;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: var(--space-4);
      opacity: 0;
      transform: translateY(20px);
      animation: fade-up 800ms var(--ease-out-expo) 750ms forwards;
    }

    .hero-promise-grid {
      position: absolute;
      bottom: var(--space-12);
      left: 0;
      right: 0;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: var(--space-8);
      max-width: var(--container-max);
      margin-inline: auto;
      padding-inline: var(--space-6);
      color: var(--white);
    }

    @media (min-width: 768px) {
      .hero-promise-grid {
        padding-inline: var(--space-12);
        gap: var(--space-16);
      }
    }

    .promise-item {
      opacity: 0;
      transform: translateY(24px);
      animation: fade-up 800ms var(--ease-out-expo) 950ms forwards;
    }

    .promise-item:nth-child(2) {
      animation-delay: 1100ms;
    }

    .promise-number {
      font-family: var(--font-en);
      font-size: clamp(2.5rem, 5vw, 4rem);
      font-weight: 200;
      line-height: 1;
      color: rgba(255, 255, 255, 0.35);
      margin-bottom: var(--space-2);
    }

    .promise-label {
      font-size: clamp(1rem, 1.6vw, 1.25rem);
      font-weight: 500;
      margin-bottom: var(--space-2);
    }

    .promise-desc {
      font-size: 0.875rem;
      color: rgba(255, 255, 255, 0.7);
      line-height: 1.6;
    }

    @keyframes fade-up {
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .scroll-cue {
      position: absolute;
      bottom: var(--space-6);
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: var(--space-2);
      color: rgba(255, 255, 255, 0.6);
      font-size: 0.75rem;
      letter-spacing: 0.1em;
      animation: bounce-cue 2s ease-in-out infinite;
    }

    @keyframes bounce-cue {
      0%, 100% { transform: translateX(-50%) translateY(0); }
      50% { transform: translateX(-50%) translateY(8px); }
    }

    .scroll-cue svg {
      width: 20px;
      height: 20px;
      stroke: currentColor;
      stroke-width: 1.5;
      fill: none;
    }

    /* Section commons */
    .section {
      padding-block: var(--space-20);
      position: relative;
    }

    .section-title {
      font-family: var(--font-display);
      font-size: clamp(2rem, 4.5vw, 3.5rem);
      font-weight: 700;
      line-height: 1.15;
      letter-spacing: -0.01em;
      color: var(--navy-900);
    }

    .section-title span {
      color: var(--gold-500);
    }

    /* 首页/产品页通用：实拍徽章（白底区块的轻量版，呼应首页 scene 深色胶囊） */
    .section-badge {
      display: inline-flex;
      align-items: center;
      max-width: 100%;
      margin-bottom: var(--space-3);
      padding: 0.3rem 1rem;
      border: 1px solid var(--gold-500);
      border-radius: 999px;
      background: rgba(74, 144, 226, 0.08);
      color: var(--navy-800);
      font-family: var(--font-body);
      font-size: 0.875rem;
      font-weight: 600;
      letter-spacing: 0.12em;
      line-height: 1.5;
    }
    .section-badge::before {
      content: '';
      width: 0.9rem;
      height: 1px;
      background: currentColor;
      margin-right: 0.55em;
      opacity: 0.7;
    }

    .section-desc {
      font-size: 1.0625rem;
      color: var(--color-muted);
      line-height: 1.8;
      max-width: 56ch;
    }

    /* Reveal on scroll */
    .reveal {
      opacity: 0;
      transform: translateY(32px);
      transition: opacity 700ms var(--ease-out-expo),
                  transform 700ms var(--ease-out-expo);
    }

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

    /* P2-8：滚动入场变体，差异化首屏/关键卡，打破全站同向同质化 */
    .reveal--left  { transform: translateX(-48px); }
    .reveal--right { transform: translateX(48px); }
    .reveal--zoom  { transform: scale(0.94); }
    .reveal--left.visible,
    .reveal--right.visible,
    .reveal--zoom.visible { transform: none; }

    .reveal-group .reveal {
      transition-delay: calc(var(--i, 0) * 80ms);
    }

    /* Reveal 静态兜底：
       ① prefers-reduced-motion 用户直接可见（尊重无障碍）
       ② scripting: none 环境（无 JS 爬虫 / 严格隐私浏览器）直接可见
       ③ .no-reveal 类（由 <noscript> 样式或页面级兜底添加）直接可见 */
    @media (prefers-reduced-motion: reduce) {
      .reveal,
      .reveal-group .reveal {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
      }
    }

    @media (scripting: none) {
      .reveal,
      .reveal-group .reveal {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
      }
    }

    .no-reveal .reveal,
    .no-reveal .reveal-group .reveal,
    html.no-js .reveal,
    html.no-js .reveal-group .reveal {
      opacity: 1 !important;
      transform: none !important;
      transition: none !important;
    }

    /* Product Scene — 全屏大图 + 底部悬浮按钮行（不再使用 scene-frame 容器） */
    .scene-section {
      position: relative;
      width: 100%;
      min-height: 100svh;
      overflow: hidden;
      background: var(--navy-900);
    }

    /* 多张图片层叠，opacity 交叉淡入 */
    .scene-stage {
      position: absolute;
      inset: 0;
    }

    .scene-image {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0;
      transform: scale(1.04);
      transition: opacity 700ms var(--ease-out-expo),
                  transform 1200ms var(--ease-out-expo);
      will-change: opacity, transform;
    }

    .scene-image.active {
      opacity: 1;
      transform: scale(1);
    }

    /* 图底渐变 + 顶部轻微压暗，让文字和按钮始终可读 */
    .scene-veil {
      position: absolute;
      inset: 0;
      background:
        linear-gradient(180deg, rgba(7, 18, 35, 0.18) 0%, rgba(7, 18, 35, 0) 35%, rgba(7, 18, 35, 0.55) 100%);
      pointer-events: none;
    }

    /* 悬浮按钮行：覆盖在图上，无外层胶囊容器 */
    .scene-bottom {
      position: absolute;
      left: 50%;
      bottom: clamp(2rem, 5vw, 3.5rem);
      transform: translateX(-50%);
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: center;
      gap: 0;
      max-width: min(1180px, calc(100% - 2rem));
      z-index: 2;
    }

    .scene-tabs {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: var(--space-3);
    }

    .scene-more {
      display: inline-flex;
      align-items: center;
      gap: 0.45rem;
      flex-basis: 100%;
      justify-content: center;
      margin-top: var(--space-6);
      background: transparent;
      color: var(--white);
      padding: 0.4rem 0.25rem;
      border: none;
      border-radius: 0;
      position: relative;
      font-family: var(--font-body);
      font-size: 0.9375rem;
      font-weight: 600;
      letter-spacing: 0.08em;
      line-height: 1.2;
      white-space: nowrap;
      text-shadow: 0 1px 4px rgba(7, 18, 35, 0.5);
      transition: color 280ms var(--ease-out-expo);
    }

    .scene-more::after {
      content: '';
      position: absolute;
      left: 0.25rem;
      right: 0.25rem;
      bottom: 0;
      height: 1px;
      background: var(--gold-500);
      transform: scaleX(0);
      transform-origin: left center;
      transition: transform 280ms var(--ease-out-expo);
    }

    .scene-more svg {
      transition: transform 280ms var(--ease-out-expo);
    }

    .scene-more:hover {
      color: var(--gold-500);
    }

    .scene-more:hover::after {
      transform: scaleX(1);
    }

    .scene-more:hover svg {
      transform: translateX(3px);
    }

    .scene-more:focus-visible {
      outline: 2px solid var(--white);
      outline-offset: 3px;
    }

    .scene-tab {
      appearance: none;
      -webkit-appearance: none;
      border: 1px solid rgba(255, 255, 255, 0.7);
      background: rgba(7, 18, 35, 0.5);
      color: var(--white);
      padding: 0.625rem 1.5rem;
      border-radius: var(--radius-full);
      font-family: var(--font-body);
      font-size: 0.9375rem;
      font-weight: 500;
      letter-spacing: 0.04em;
      line-height: 1.2;
      white-space: nowrap;
      cursor: pointer;
      transition:
        background-color 280ms var(--ease-out-expo),
        color 280ms var(--ease-out-expo),
        border-color 280ms var(--ease-out-expo),
        transform 280ms var(--ease-out-expo),
        box-shadow 280ms var(--ease-out-expo);
    }

    .scene-tab:hover {
      background: rgba(255, 255, 255, 0.16);
      border-color: rgba(255, 255, 255, 0.85);
      transform: translateY(-1px);
    }

    .scene-tab.active {
      background: var(--gold-500);
      border-color: var(--gold-500);
      color: var(--white);
      box-shadow: 0 12px 32px rgba(74, 144, 226, 0.35);
    }

    .scene-tab:focus-visible {
      outline: 2px solid var(--white);
      outline-offset: 3px;
    }

    @media (max-width: 767px) {
      .scene-section { min-height: 100svh; }
      .scene-bottom { bottom: 1.5rem; gap: 0.5rem; }
      .scene-tabs { gap: 0.5rem; }
      .scene-tab { padding: 0.5rem 1rem; font-size: 0.8125rem; }
      .scene-more { padding: 0.3rem 0.25rem; font-size: 0.8125rem; margin-top: var(--space-4); }
    }

    @media (prefers-reduced-motion: reduce) {
      .scene-image { transition: opacity 0.01ms; transform: none; }
      .scene-tab { transition: none; }
      .scene-more { transition: none; }
      .scene-more svg { transition: none; }
    }

    /* Technology */
    .tech-section {
      position: relative;
      min-height: 80vh;
      display: flex;
      align-items: center;
      padding-block: var(--space-12) var(--space-10);
      color: var(--white);
      overflow: hidden;
    }

    .tech-bg {
      position: absolute;
      inset: 0;
      z-index: -2;
    }

    .tech-bg img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center;
      filter: brightness(0.92);
    }

    .tech-bg::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg,
        rgba(7, 18, 35, 0.66) 0%,
        rgba(7, 18, 35, 0.4) 26%,
        rgba(7, 18, 35, 0) 52%);
      pointer-events: none;
    }

    .tech-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-12);
      align-items: center;
    }

    @media (min-width: 1024px) {
      .tech-grid {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
      }

      .tech-title {
        flex-wrap: nowrap;
      }
    }

    .tech-title {
      display: inline-flex;
      align-items: baseline;
      flex-wrap: wrap;
      gap: 0.5em 0.7em;
      font-family: var(--font-display);
      font-size: clamp(1.375rem, 2vw, 1.75rem);
      font-weight: 700;
      line-height: 1.2;
      margin-bottom: var(--space-6);
      text-shadow: 0 1px 3px rgba(7, 18, 35, 0.9), 0 0 16px rgba(7, 18, 35, 0.6);
    }

    .tech-title-en {
      font-family: var(--font-en);
      font-size: 0.58em;
      font-weight: 500;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: rgba(255, 255, 255, 0.9);
      white-space: nowrap;
    }

    .tech-desc {
      color: rgba(255, 255, 255, 0.9);
      max-width: 42ch;
      margin-bottom: var(--space-8);
      text-shadow: 0 1px 3px rgba(7, 18, 35, 0.9), 0 0 14px rgba(7, 18, 35, 0.55);
    }

    .tech-cards {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      grid-auto-rows: 1fr;
      gap: var(--space-4);
    }

    .tech-card {
      position: relative;
      display: flex;
      flex-direction: column;
      gap: var(--space-3);
      padding: var(--space-5);
      padding-left: calc(var(--space-5) + 1.5rem);
      min-height: 264px;
      border-radius: var(--radius-md);
      background: rgba(255, 255, 255, 0.95);
      border: 1px solid rgba(7, 18, 35, 0.1);
      box-shadow: 0 12px 40px rgba(7, 18, 35, 0.18);
      color: var(--ink-900, #16243B);
      text-decoration: none;
      transition: transform var(--duration-normal) var(--ease-out-quart),
                  border-color var(--duration-normal) var(--ease-out-quart),
                  box-shadow var(--duration-normal) var(--ease-out-quart);
    }

    .tech-card::before {
      content: "";
      position: absolute;
      top: -1px;
      inset-inline: 0;
      height: 2px;
      background: var(--gold-500);
      border-radius: var(--radius-md) var(--radius-md) 0 0;
      transform: scaleX(0.32);
      transform-origin: left center;
      transition: transform 450ms var(--ease-out-quart);
    }

    .tech-card:hover {
      transform: translateY(-6px);
      border-color: rgba(74, 144, 226, 0.55);
      box-shadow: 0 18px 48px rgba(7, 18, 35, 0.22);
    }

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

    .tech-card-index {
      position: absolute;
      top: var(--space-5);
      left: var(--space-4);
      writing-mode: vertical-rl;
      font-family: var(--font-en);
      font-size: 0.95rem;
      font-weight: 700;
      letter-spacing: 0.18em;
      color: rgba(22, 36, 59, 0.5);
      transition: color var(--duration-normal) var(--ease-out-quart);
    }

    .tech-card-index::before {
      content: "";
      position: absolute;
      top: -0.4rem;
      left: -0.55rem;
      width: 2px;
      height: calc(100% + 0.8rem);
      border-radius: 2px;
      background: var(--gold-500);
      opacity: 0.55;
      transition: opacity var(--duration-normal) var(--ease-out-quart);
    }

    .tech-card:hover .tech-card-index {
      color: rgba(22, 36, 59, 0.82);
    }

    .tech-card:hover .tech-card-index::before {
      opacity: 1;
    }

    .tech-card-name {
      font-family: var(--font-display);
      font-size: clamp(1.125rem, 1.6vw, 1.375rem);
      font-weight: 700;
      line-height: 1.3;
      margin: 0;
      color: var(--ink-900, #16243B);
    }

    .tech-card-value {
      margin: 0;
      font-size: 0.9rem;
      line-height: 1.65;
      color: rgba(22, 36, 59, 0.72);
    }

    .tech-card-foot {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-3);
      margin-top: auto;
      padding-top: var(--space-2);
    }

    .tech-chip {
      display: inline-flex;
      align-items: center;
      padding: 0.3em 0.85em;
      border: 1px solid rgba(74, 144, 226, 0.35);
      border-radius: var(--radius-full);
      font-size: 0.75rem;
      letter-spacing: 0.04em;
      color: #2E6FB0;
      white-space: nowrap;
      transition: color var(--duration-fast) var(--ease-out-quart),
                  border-color var(--duration-fast) var(--ease-out-quart),
                  background-color var(--duration-fast) var(--ease-out-quart);
    }

    .tech-card:hover .tech-chip {
      color: var(--white);
      background-color: var(--gold-500);
      border-color: var(--gold-500);
    }

    .tech-card-arrow {
      flex: none;
      color: rgba(22, 36, 59, 0.45);
      transition: transform var(--duration-normal) var(--ease-out-quart),
                  color var(--duration-normal) var(--ease-out-quart);
    }

    .tech-card:hover .tech-card-arrow {
      color: var(--gold-500);
      transform: translateX(4px);
    }

    @media (min-width: 1024px) {
      .tech-cards {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    @media (max-width: 767px) {
      .tech-cards {
        grid-template-columns: 1fr;
      }

      .tech-card {
        min-height: 0;
        padding: var(--space-5);
        padding-left: calc(var(--space-5) + 1.25rem);
      }
    }

    @media (prefers-reduced-motion: reduce) {
      .tech-card,
      .tech-card::before,
      .tech-card-arrow {
        transition: none !important;
        transform: none !important;
      }
    }

    /* Company */
    .company-section {
      position: relative;
      min-height: 90vh;
      display: flex;
      align-items: center;
      color: var(--white);
      overflow: hidden;
      text-shadow: 0 1px 3px rgba(0, 0, 0, 0.55);
    }

    .company-bg {
      position: absolute;
      inset: 0;
      z-index: -2;
    }

    .company-bg img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center bottom;
    }

    .company-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-10);
      align-items: end;
    }

    @media (min-width: 1024px) {
      .company-grid {
        grid-template-columns: 1fr;
        gap: var(--space-10);
      }
    }

    .company-eyebrow {
      font-family: var(--font-en);
      font-size: 0.875rem;
      font-weight: 600;
      letter-spacing: 0.35em;
      text-transform: uppercase;
      color: rgba(255, 255, 255, 0.85);
      margin-bottom: var(--space-3);
    }

    .company-title {
      font-family: var(--font-display);
      font-size: clamp(2.25rem, 5vw, 4rem);
      font-weight: 700;
      line-height: 1.15;
      margin-bottom: var(--space-10);
    }

    .company-desc {
      color: rgba(255, 255, 255, 0.88);
      max-width: 48rem;
      margin-bottom: var(--space-8);
      line-height: 1.75;
      font-size: 0.9375rem;
    }
    .company-pillar {
      display: flex;
      gap: var(--space-3);
      align-items: baseline;
      margin-bottom: var(--space-3);
      line-height: 1.75;
    }
    .company-pillar:last-child { margin-bottom: 0; }
    .pillar-label {
      flex: 0 0 auto;
      color: var(--gold-500, #c8a86b);
      font-weight: 600;
      letter-spacing: 0.1em;
      font-size: 0.9em;
    }

    .company-actions {
      display: flex;
      flex-wrap: wrap;
      gap: var(--space-4);
    }

    .btn-company-primary {
      background: var(--white);
      color: var(--navy-900);
      border-radius: 999px;
      padding: 0.5rem 3.25rem;
      font-size: 0.9375rem;
      font-weight: 600;
      text-shadow: none;
      box-shadow: 0 3px 10px rgba(0, 0, 0, 0.18);
    }

    .btn-company-primary:hover {
      background: rgba(255, 255, 255, 0.92);
      transform: translateY(-2px);
      box-shadow: 0 5px 16px rgba(0, 0, 0, 0.26);
    }

    .stat-number {
      font-family: var(--font-en);
      font-size: clamp(3.5rem, 7vw, 5rem);
      font-weight: 800;
      line-height: 1;
      color: var(--gold-500);
      margin-bottom: var(--space-2);
      white-space: nowrap;
    }

    .stat-unit {
      font-family: var(--font-body);
      font-size: 0.4em;
      font-weight: 600;
      color: var(--white);
      margin-left: 0.1em;
      white-space: nowrap;
    }

    .stat-label {
      font-size: 1rem;
      color: rgba(255, 255, 255, 0.7);
    }

    /* Partners */
    .partners-section {
      background: var(--white);
      padding-block: var(--space-16);
      overflow-x: hidden;
    }

    .partners-heading {
      margin-bottom: var(--space-10);
    }

    .partners-heading h2 {
      font-family: var(--font-body);
      font-size: clamp(1.5rem, 3vw, 2.25rem);
      font-weight: 700;
      color: var(--navy-900);
      margin-bottom: var(--space-2);
    }

    .partners-heading p {
      font-family: var(--font-en);
      font-size: 0.875rem;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--gray-500);
    }

    .partners-heading .partners-sub {
      font-family: var(--font-body);
      font-size: 0.95rem;
      letter-spacing: 0;
      text-transform: none;
      color: var(--gray-500);
      margin-top: var(--space-3);
      max-width: 640px;
    }

    .partners-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: var(--space-4);
      padding-block: var(--space-2);
    }

    @media (min-width: 640px) {
      .partners-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }

    @media (min-width: 1024px) {
      .partners-grid {
        grid-template-columns: repeat(6, 1fr);
        gap: var(--space-5);
      }
    }

    .partner-card {
      display: flex;
      align-items: center;
      justify-content: center;
      aspect-ratio: 5 / 4;
      min-width: 0;
      padding: var(--space-5) var(--space-4);
      background: var(--white);
      border: 1px solid var(--gray-100);
      border-radius: var(--radius-md);
      transition: border-color var(--duration-fast) var(--ease-out-quart),
                  box-shadow var(--duration-fast) var(--ease-out-quart),
                  transform var(--duration-fast) var(--ease-out-quart);
    }

    .partner-card:hover {
      border-color: var(--gold-300);
      box-shadow: 0 12px 30px rgba(11, 31, 58, 0.08);
      transform: translateY(-3px);
    }

    .partner-logo {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: var(--space-2);
      width: 100%;
      height: 100%;
      color: var(--gray-700);
      transition: color var(--duration-fast) var(--ease-out-quart);
    }

    .partner-card:hover .partner-logo {
      color: var(--navy-800);
    }

    .partner-icon {
      width: 28px;
      height: 28px;
      border-radius: var(--radius-sm);
      background: var(--cream-200);
      display: grid;
      place-items: center;
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--navy-700);
      flex-shrink: 0;
    }

    .partner-name {
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.02em;
      white-space: nowrap;
      color: var(--gray-600);
    }

    .partner-logo-img {
      max-height: 42px;
      max-width: min(110px, 100%);
      width: auto;
      height: auto;
      object-fit: contain;
      flex-shrink: 0;
      filter: grayscale(100%) opacity(0.82);
      transition: filter 200ms ease, opacity 200ms ease, transform 200ms ease;
    }
    .partner-card:hover .partner-logo-img {
      filter: grayscale(0%) opacity(1);
      transform: scale(1.03);
    }

    /* Quote */
    .quote-section {
      background: var(--gray-100);
      color: var(--gray-900);
      padding-block: var(--space-12);
    }

    @media (min-width: 1024px) {
      .quote-section {
        padding-block: var(--space-16);
      }
    }

    .quote-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-8);
      align-items: start;
    }

    @media (min-width: 1024px) {
      .quote-grid {
        grid-template-columns: 1fr 1.2fr;
        gap: var(--space-10);
      }
    }

    .quote-services {
      color: var(--gray-700);
      font-size: 0.875rem;
      line-height: 1.85;
    }

    .service-tags {
      list-style: none;
      margin: 0 0 var(--space-3);
      padding: 0;
      display: flex;
      flex-wrap: wrap;
      gap: 0.3rem 0.45rem;
    }

    .service-tags li {
      font-size: 0.8125rem;
      color: var(--gray-700);
      background: var(--white);
      border: 1px solid var(--gray-300);
      border-radius: 6px;
      padding: 0.22rem 0.55rem;
      line-height: 1.35;
    }

    .service-block {
      margin-bottom: var(--space-4);
    }

    .service-block + .service-block {
      margin-top: var(--space-4);
      padding-top: var(--space-4);
      border-top: 1px solid var(--gray-300);
    }

    .service-block h3 {
      display: flex;
      align-items: center;
      gap: var(--space-2);
      font-size: 1rem;
      font-weight: 600;
      color: var(--gray-900);
      margin-bottom: var(--space-3);
      letter-spacing: 0.02em;
    }

    .service-block h3::before {
      content: '';
      width: 3px;
      height: 1em;
      background: var(--gold-500);
      border-radius: 2px;
      flex-shrink: 0;
    }

    .service-block p {
      margin-bottom: var(--space-2);
      line-height: 2.1;
    }

    .service-note {
      margin-top: var(--space-4);
      padding-top: var(--space-3);
      border-top: 1px solid var(--gray-300);
      color: var(--gold-500);
      font-size: 0.8125rem;
      line-height: 1.7;
    }

    .quote-form-wrap {
      background: transparent;
      border: 0;
      border-radius: 0;
      padding: 0;
    }

    .quote-form-title {
      font-family: var(--font-display);
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 0;
    }

    /* 英文眉标 Quick Quote 已移除（品牌去装饰英文规则） */

    .quote-form {
      margin-top: var(--space-4);
      display: grid;
      gap: var(--space-4);
    }

    .form-row {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-4);
    }

    @media (min-width: 768px) {
      .form-row {
        grid-template-columns: 1fr 1fr;
      }
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: var(--space-2);
    }

    .form-group label {
      font-size: 0.8125rem;
      font-weight: 500;
      color: var(--gray-700);
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: var(--space-1) 0;
      font-size: 0.9375rem;
      color: var(--gray-900);
      background: transparent;
      border: 0;
      border-bottom: 1px solid var(--gray-300);
      border-radius: 0;
      outline: none;
      transition: border-color var(--duration-fast) var(--ease-out-quart);
    }

    .form-group select {
      appearance: none;
      -webkit-appearance: none;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 0 center;
      padding-right: 1.25rem;
    }

    .form-group input::placeholder,
    .form-group textarea::placeholder {
      color: var(--gray-500);
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--gold-500);
      background: transparent;
    }

    .form-group textarea {
      min-height: 48px;
      resize: vertical;
    }

    .form-submit {
      justify-self: start;
      margin-top: 0;
      scroll-margin-top: 80px;
    }

    #quote-submit {
      scroll-margin-top: 80px;    /* 无 JS 原生锚点降级：按钮停在 header 下方 */
      scroll-margin-bottom: 24px; /* JS scrollIntoView(block:end)：按钮底部距视口底部 24px */
    }

    .form-note {
      font-size: 0.75rem;
      color: var(--gray-500);
      margin-top: var(--space-2);
    }

    .form-note a {
      color: var(--gold-500);
      text-decoration: underline;
      text-underline-offset: 2px;
    }

    .quote-facts {
      margin-top: var(--space-4);
      font-size: 0.8125rem;
      line-height: 1.6;
      color: var(--gray-700);
    }

    .quote-price-factors {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: var(--space-2);
      margin-top: 0;
    }

    .factor-label {
      font-size: 0.75rem;
      color: var(--gray-500);
      margin-right: var(--space-1);
    }

    .factor {
      font-size: 0.8125rem;
      color: var(--gray-600);
      line-height: 1.6;
    }

    .factor + .factor::before {
      content: '·';
      margin: 0 0.4em 0 0.2em;
      color: var(--gray-400);
    }

    /* 首页 hero 下方「热门需求」入口条（2026-08-25，从报价区迁移至此，GEO 关键词入口） */
    .quote-hotlinks {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 0.45rem 0.6rem;
      margin-top: var(--space-3);
    }

    .hotlinks-label {
      flex-shrink: 0;
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--gray-500);
      margin-right: 0.3rem;
      white-space: nowrap;
    }

    .quote-hotlinks a {
      font-size: 0.8125rem;
      line-height: 1.35;
      color: var(--gray-700);
      text-decoration: none;
      padding: 0.22rem 0.55rem;
      border-radius: 6px;
      background: var(--white);
      border: 1px solid var(--gray-300);
      transition: background-color var(--duration-fast) var(--ease-out-quart),
                  color var(--duration-fast) var(--ease-out-quart),
                  border-color var(--duration-fast) var(--ease-out-quart);
      white-space: nowrap;
    }

    .quote-hotlinks a:hover {
      background: var(--gold-500);
      border-color: var(--gold-500);
      color: var(--white);
    }

    @media (max-width: 767px) {
      .quote-hotlinks {
        margin-top: var(--space-3);
        padding-top: var(--space-3);
      }
    }

    .quote-faq {
      margin-top: var(--space-7);
      padding-top: var(--space-3);
      border-top: 1px solid var(--gray-300);
    }

    .quote-faq-title {
      font-family: var(--font-display);
      font-size: 1.25rem;
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: var(--space-2);
      margin-bottom: var(--space-5);
    }

    .quote-faq-title::before {
      content: '';
      width: 3px;
      height: 0.85em;
      background: var(--gold-500);
      border-radius: 2px;
      flex-shrink: 0;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: var(--space-4) var(--space-6);
    }

    @media (min-width: 768px) {
      .faq-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    .faq-item h4 {
      font-size: 0.9375rem;
      font-weight: 600;
      color: var(--gray-900);
      margin-bottom: var(--space-1);
    }

    .install-card-title {
      font-size: 1rem;
      font-weight: 600;
      color: var(--gray-900);
      margin: 0 0 0.4rem;
    }

    .faq-item p {
      font-size: 0.875rem;
      line-height: 1.65;
      color: var(--gray-700);
    }

    /* Footer */
    .site-footer {
      background: var(--white);
      color: var(--gray-500);
      padding-block: var(--space-8);
      border-top: 1px solid var(--gray-300);
    }

    .footer-inner {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: var(--space-4);
      text-align: center;
      font-size: 0.875rem;
    }

    @media (min-width: 768px) {
      .footer-inner {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
      }
    }

    .footer-links {
      display: flex;
      gap: var(--space-6);
    }

    .footer-links a {
      color: var(--gray-700);
      text-decoration: none;
    }

    .footer-links a:hover {
      color: var(--gold-500);
    }

    /* 展厅地址行（全站 footer：版权行与备案行之间） */
    .footer-addr {
      margin-top: var(--space-5);
      padding-top: var(--space-4);
      border-top: 1px solid var(--gray-100);
      text-align: center;
      font-size: 0.8125rem;
      line-height: 1.8;
      color: var(--gray-600);
    }
    .footer-addr strong {
      color: var(--navy-800);
      font-weight: 600;
    }
    .footer-addr-link {
      display: inline-flex;
      align-items: center;
      gap: 0.3em;
      margin-left: 0.75em;
      color: var(--gold-500);
      text-decoration: none;
      font-size: inherit;
      white-space: nowrap;
    }
    .footer-addr-link:hover {
      text-decoration: underline;
    }

    /* 联系页卡片内一键导航按钮 */
    .btn-addr {
      display: inline-flex;
      align-items: center;
      gap: 0.4em;
      margin-top: var(--space-3);
      padding: 0.4rem 1rem;
      border: 1px solid var(--gold-500);
      border-radius: var(--radius-full);
      color: var(--navy-800);
      background: rgba(74, 144, 226, 0.06);
      font-size: 0.8125rem;
      font-weight: 600;
      text-decoration: none;
      transition: background var(--duration-fast) var(--ease-out-quart), color var(--duration-fast) var(--ease-out-quart);
    }
    .btn-addr:hover {
      background: var(--gold-500);
      color: var(--white);
    }

    /* 备案信息行（全站 footer 底部） */
    .footer-beian {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: center;
      gap: 0.35rem 0.9rem;
      margin-top: var(--space-5);
      padding-top: var(--space-4);
      border-top: 1px solid var(--gray-100);
      font-size: 0.75rem;
      color: var(--gray-500);
    }
    .footer-beian a {
      display: inline-flex;
      align-items: center;
      gap: 0.3rem;
      color: var(--gray-500);
      text-decoration: none;
    }
    .footer-beian a:hover {
      color: var(--gold-500);
    }
    .footer-beian img {
      width: 16px;
      height: 16px;
      vertical-align: middle;
    }
    .beian-sep {
      color: var(--gray-300);
    }

    /* Utility */
    .gold-line {
      display: inline-block;
      width: 48px;
      height: 2px;
      background: var(--gold-500);
      margin-bottom: var(--space-4);
    }
/* =========================================================
   Shared enhancements for multi-page site
   ========================================================= */

/* Nav dropdown */
.nav-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 200px;
  padding: var(--space-2);
  background: rgba(255, 255, 255, 0.98);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 40px rgba(11, 31, 58, 0.12);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-fast) var(--ease-out-quart),
              transform var(--duration-fast) var(--ease-out-quart);
  z-index: 1001;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

/* 透明桥接：填满“系统方案”链接与下拉菜单之间的 12px 间隙，
   鼠标滑过该间隙时仍保持 .nav-dropdown 的 hover 状态，避免菜单提前收起 */
.dropdown-menu::before {
  content: '';
  position: absolute;
  top: -12px;
  left: 0;
  right: 0;
  height: 12px;
  background: transparent;
  pointer-events: auto;
}

.dropdown-menu a {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: 0.875rem;
  color: var(--navy-900);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: background var(--duration-fast) var(--ease-out-quart);
}

.dropdown-menu a:hover {
  background: var(--cream-100);
  color: var(--navy-900);
}

/* Active nav link indicator */
.nav-link.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Section heading center utility */
.section-heading {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: var(--space-12);
}

.section-heading .section-title {
  margin-bottom: var(--space-4);
}

.section-heading .section-desc {
  margin-inline: auto;
}

/* Feature list */
.feature-list {
  margin-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.feature-list li {
  position: relative;
  padding-left: var(--space-6);
  color: var(--color-muted);
  line-height: 1.7;
}

.feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold-500);
}

/* Intro grid */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  align-items: center;
}

@media (min-width: 1024px) {
  .intro-grid {
    grid-template-columns: 1fr 1.1fr;
  }
}

.intro-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 25px 80px rgba(11, 31, 58, 0.12);
}

.intro-image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* Data section */
.data-section {
  background: var(--navy-900);
  color: var(--white);
  padding-block: var(--space-20);
  text-align: center;
}

.data-section .section-title {
  color: var(--white);
}

.data-section .section-desc {
  color: rgba(255, 255, 255, 0.75);
  margin-inline: auto;
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  max-width: 640px;
  margin-inline: auto;
}

@media (min-width: 640px) {
  .data-grid {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  }
}

.data-card {
  padding: var(--space-8);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
}

.data-number {
  font-family: var(--font-en);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1;
  color: var(--gold-500);
  margin-bottom: var(--space-3);
}

.data-number span {
  font-size: 0.45em;
  font-weight: 600;
  color: var(--white);
  margin-left: 0.1em;
}

.data-label {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.7);
}

/* Problem section */
.problem-section {
  background: var(--cream-100);
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .problem-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.problem-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(11, 31, 58, 0.1);
}

.problem-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.problem-content {
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  padding: var(--space-6);
  background: linear-gradient(to top, rgba(7, 18, 35, 0.92), transparent);
  color: var(--white);
}

.problem-content h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-2);
}

.problem-content p {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.6;
}

/* Carousel */
.case-carousel,
.lifestyle-carousel {
  position: relative;
}

.carousel-track {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.case-slide,
.lifestyle-carousel .case-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 600ms var(--ease-out-quart);
}

.case-slide.active,
.lifestyle-carousel .case-slide.active {
  opacity: 1;
  z-index: 2;
}

.case-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-slide-label {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--white);
  font-family: var(--font-body);
  font-size: clamp(1.5rem, 4vw, 3rem);
  font-weight: 700;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
  z-index: 3;
}

.case-slide-label span {
  display: block;
  font-family: var(--font-en);
  font-size: 0.4em;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-top: var(--space-2);
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 4;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  color: var(--navy-900);
  font-size: 1.5rem;
  display: grid;
  place-items: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  transition: background var(--duration-fast) var(--ease-out-quart),
              transform var(--duration-fast) var(--ease-out-quart);
}

.carousel-btn:hover {
  background: var(--white);
  transform: translateY(-50%) scale(1.05);
}

.carousel-btn.prev { left: var(--space-4); }
.carousel-btn.next { right: var(--space-4); }

/* 轮播指示点（由 shared.js 动态生成） */
.carousel-dots {
  position: absolute;
  left: 50%;
  bottom: var(--space-4);
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  gap: 0.5rem;
  align-items: center;
  filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.45));
}

.carousel-dot {
  width: 9px;
  height: 9px;
  padding: 0;
  border: none;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.55);
  cursor: pointer;
  transition: width var(--duration-fast) var(--ease-out-expo),
              background var(--duration-fast) var(--ease-out-expo);
}

.carousel-dot.active {
  width: 26px;
  background: var(--white);
}

.carousel-dot:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 3px;
}

/* Solutions list */
.solutions-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .solutions-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .solutions-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

.solution-card {
  position: relative;
  display: block;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--white);
  box-shadow: 0 12px 40px rgba(11, 31, 58, 0.08);
  transition: transform var(--duration-normal) var(--ease-out-quart),
              box-shadow var(--duration-normal) var(--ease-out-quart);
}

.solution-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(11, 31, 58, 0.14);
}

.solution-card-media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.solution-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out-quart);
  display: block;
}

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

.solution-card-body {
  padding: var(--space-6);
}

.solution-card-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--navy-900);
  margin-bottom: var(--space-2);
}

.solution-card-body p {
  font-size: 0.875rem;
  color: var(--gray-700);
  line-height: 1.6;
}

/* 卡片竖排序号（书脊式） */
.solution-card-index {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  z-index: 2;
  writing-mode: vertical-rl;
  font-family: var(--font-en);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--white);
  text-shadow: 0 1px 6px rgba(7, 18, 35, 0.55);
}

.solution-card-index::before {
  content: "";
  position: absolute;
  top: -0.3rem;
  left: -0.5rem;
  width: 2px;
  height: calc(100% + 0.6rem);
  border-radius: 2px;
  background: var(--gold-500);
  opacity: 0.9;
}

/* hover 浮现「查看方案」—— 用真实 DOM 结构替代 content 箭头，避免 Safari 上 Unicode 箭头与中文基线对不齐 */
.solution-card-cta {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: inline-flex;
  align-items: flex-end;
  justify-content: flex-end;
  gap: 0.45em;
  padding: var(--space-4);
  padding-bottom: calc(var(--space-4) + 0.12em);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--white);
  background: linear-gradient(180deg, rgba(11, 31, 58, 0.32) 0%, rgba(11, 31, 58, 0.65) 100%);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out-quart);
  pointer-events: none;
}

.solution-card:hover .solution-card-cta {
  opacity: 1;
}

.cta-text {
  line-height: 1;
}

.cta-arrow {
  width: 1.25em;
  height: 1.25em;
  flex-shrink: 0;
  transform: translateY(0.04em);
}

/* Detail grid */
.detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  align-items: center;
  margin-bottom: var(--space-16);
}

@media (min-width: 1024px) {
  .detail-grid {
    grid-template-columns: 1fr 1.1fr;
  }
}

.detail-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 25px 80px rgba(11, 31, 58, 0.12);
}

.detail-image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* Product tabs */
.product-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-12);
}

.product-tab {
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-700);
  background: var(--white);
  border: 1px solid var(--gray-100);
  transition: background var(--duration-fast) var(--ease-out-quart),
              color var(--duration-fast) var(--ease-out-quart),
              border-color var(--duration-fast) var(--ease-out-quart);
}

.product-tab:hover,
.product-tab.active {
  background: var(--navy-800);
  color: var(--white);
  border-color: var(--navy-800);
}

/* 二级分类菜单：跟随一级切换显示 */
.product-subtabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin: var(--space-5) 0 var(--space-10);
  padding-top: var(--space-5);
  border-top: 1px solid var(--gray-300);
}

.product-subtabs[hidden] {
  display: none;
}

.product-subtab {
  padding: var(--space-1) var(--space-2) 2px;
  border-radius: 0;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--gray-700);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  transition: background var(--duration-fast) var(--ease-out-quart),
              color var(--duration-fast) var(--ease-out-quart),
              border-color var(--duration-fast) var(--ease-out-quart);
}

.product-subtab[hidden] {
  display: none;
}

.product-subtab:hover,
.product-subtab.active {
  color: var(--navy-800);
  border-bottom-color: var(--navy-800);
  background: transparent;
}

/* 二级「全部」：复位锚点，品牌色+加粗区分（分隔线用独立元素） */
.product-subtab[data-sub-all="true"] {
  color: var(--navy-800);
  font-weight: 600;
}

/* 二级菜单中「全部」与真实品类之间的分隔线（独立 flex 子项，居中于两组之间） */
.product-subtab-divider {
  align-self: center;
  width: 2px;
  height: 1.25em;
  background: var(--gray-300);
  margin: 0 var(--space-3);
}

.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(11, 31, 58, 0.08);
  transition: transform var(--duration-normal) var(--ease-out-quart),
              box-shadow var(--duration-normal) var(--ease-out-quart);
  cursor: pointer;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(11, 31, 58, 0.14);
}

.product-card.hidden {
  display: none;
}

.product-empty {
  margin: 0;
  text-align: center;
  padding: var(--space-12) var(--space-4);
  color: var(--gray-700);
  font-size: 0.95rem;
}

.product-thumb {
  overflow: hidden;
}

.product-thumb img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out-quart);
}

.product-card:hover .product-thumb img {
  transform: scale(1.06);
}

.product-card h3 {
  padding: var(--space-5) var(--space-5) var(--space-2);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--navy-900);
}

.product-card p {
  padding: 0 var(--space-5) var(--space-5);
  font-size: 0.875rem;
  color: var(--gray-700);
}

/* Product lightbox */
.product-lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  background: rgba(7, 18, 35, 0.92);
  backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out-quart);
}

.product-lightbox.open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-close {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
  font-size: 1.75rem;
  display: grid;
  place-items: center;
  transition: background var(--duration-fast) var(--ease-out-quart);
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

.lightbox-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  max-width: 900px;
  width: 100%;
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

@media (min-width: 768px) {
  .lightbox-content {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.lightbox-image img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
}

.lightbox-info {
  padding: var(--space-8);
}

.lightbox-info h3 {
  font-size: 1.5rem;
  color: var(--navy-900);
  margin-bottom: var(--space-4);
}

.lightbox-info p {
  color: var(--gray-700);
  line-height: 1.8;
}

/* Service tabs */
.service-tabs-section {
  padding-block: var(--space-8);
  background: var(--white);
  border-bottom: 1px solid var(--gray-100);
}

.service-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
}

.service-tabs a {
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--gray-700);
  transition: background var(--duration-fast) var(--ease-out-quart),
              color var(--duration-fast) var(--ease-out-quart);
}

.service-tabs a:hover,
.service-tabs a.active {
  background: var(--navy-800);
  color: var(--white);
}

/* Stats row */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  max-width: 800px;
  margin-inline: auto;
  text-align: center;
}

.stat-item .stat-number {
  font-family: var(--font-en);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--navy-900);
  margin-bottom: var(--space-2);
}

.stat-item .stat-number span {
  font-size: 0.5em;
  margin-left: 0.05em;
}

.stat-item .stat-label {
  color: var(--gray-700);
}

/* Dark section */
.dark-section {
  background: var(--navy-900);
  color: var(--white);
}

/* ---- 全站悬浮报价按钮 ---- */
.float-cta {
  position: fixed;
  right: 28px;
  bottom: 44px;
  z-index: 900;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity 0.4s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.float-cta.is-visible {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.float-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 11px 20px 11px 18px;
  border-radius: var(--radius-full, 999px);
  background: var(--gold-500);
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  box-shadow: 0 10px 28px rgba(11, 31, 58, 0.25),
    0 2px 8px rgba(11, 31, 58, 0.12);
  transition: background-color var(--duration-fast) ease,
    transform var(--duration-fast) ease,
    box-shadow var(--duration-fast) ease;
}

.float-cta-btn:hover {
  background: var(--gold-400);
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(11, 31, 58, 0.3),
    0 3px 10px rgba(11, 31, 58, 0.14);
}

.float-cta-btn svg {
  width: 15px;
  height: 15px;
  flex: none;
}

@media (max-width: 767px) {
  .float-cta {
    left: 16px;
    right: 16px;
    bottom: calc(14px + env(safe-area-inset-bottom, 0px));
    transform: translateY(calc(100% + 28px));
  }

  .float-cta.is-visible {
    transform: none;
  }

  .float-cta-btn {
    width: 100%;
    justify-content: center;
    padding: 15px 20px;
    font-size: 16px;
    box-shadow: 0 12px 30px rgba(7, 18, 35, 0.28);
  }
}

@media (prefers-reduced-motion: reduce) {
  .float-cta,
  .float-cta-btn {
    transition: none;
  }
}

.dark-section .section-title {
  color: var(--white);
}

/* Process steps */
.process-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .process-steps {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1024px) {
  .process-steps {
    grid-template-columns: repeat(8, 1fr);
  }
}

.process-step {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.9);
}

.process-step span {
  font-family: var(--font-en);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--gold-500);
  flex-shrink: 0;
}

/* Material grid */
.material-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .material-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.material-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(11, 31, 58, 0.08);
}

.material-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.material-card h3 {
  padding: var(--space-5) var(--space-5) var(--space-2);
  font-size: 1.125rem;
  color: var(--navy-900);
}

.material-card p {
  padding: 0 var(--space-5) var(--space-5);
  font-size: 0.9375rem;
  color: var(--gray-700);
}

/* Guarantee */
.guarantee-section {
  background: var(--cream-100);
}

.guarantee-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .guarantee-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.guarantee-card {
  text-align: center;
  padding: var(--space-8) var(--space-4);
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 30px rgba(11, 31, 58, 0.06);
}

.guarantee-number,
.guarantee-icon {
  font-family: var(--font-en);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  color: var(--gold-500);
  line-height: 1;
  margin-bottom: var(--space-3);
}

.guarantee-card p {
  font-size: 0.9375rem;
  color: var(--gray-700);
}

/* Furnace section */
.furnace-section {
  background: var(--navy-900);
  color: var(--white);
}

.furnace-section .section-title {
  color: var(--white);
}

.furnace-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  align-items: start;
}

@media (min-width: 1024px) {
  .furnace-grid {
    grid-template-columns: 0.5fr 1fr;
  }
}

.furnace-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.furnace-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
}

.furnace-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: grid;
  place-items: center;
  font-size: 0.75rem;
  flex-shrink: 0;
}

.furnace-vs {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: center;
}

@media (min-width: 640px) {
  .furnace-vs {
    grid-template-columns: 1fr auto 1fr;
  }
}

.furnace-box {
  padding: var(--space-8);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
}

.furnace-box h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-3);
  color: var(--gold-400);
}

.furnace-box p {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.7;
}

.vs-divider {
  font-family: var(--font-en);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold-500);
  text-align: center;
}

/* Production */
.production-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .production-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.production-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(11, 31, 58, 0.08);
}

.production-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.production-card h3 {
  padding: var(--space-5);
  font-size: 1.125rem;
  color: var(--navy-900);
  background: var(--white);
}

/* Cases grid */
.cases-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.case-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(11, 31, 58, 0.08);
  transition: transform var(--duration-normal) var(--ease-out-quart);
}

.case-card:hover {
  transform: translateY(-4px);
}

.case-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out-quart);
}

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

.case-label {
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  padding: var(--space-4);
  background: linear-gradient(to top, rgba(7, 18, 35, 0.85), transparent);
  color: var(--white);
  font-size: 1rem;
  font-weight: 500;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.case-label-title {
  font-size: 1.0625rem;
  font-weight: 600;
}

.case-label-loc {
  font-size: 0.8125rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.85);
}

.case-label-tags {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--gold-300);
}

.case-card.hidden {
  display: none;
}

/* 案例翻页器 */
.cases-pager {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-8);
}

.cases-pager[hidden] {
  display: none;
}

.case-page-btn {
  min-width: 2.5rem;
  height: 2.5rem;
  padding: 0 var(--space-3);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md, 8px);
  background: var(--white);
  color: var(--gray-700);
  font-size: 0.9375rem;
  cursor: pointer;
  transition: border-color var(--duration-normal) var(--ease-out-quart),
              background var(--duration-normal) var(--ease-out-quart);
}

.case-page-btn:hover {
  border-color: var(--navy-800);
}

.case-page-btn.active {
  background: var(--navy-800);
  border-color: var(--navy-800);
  color: #fff;
  font-weight: 600;
}

.case-page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Case detail */
.case-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4) var(--space-8);
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius-lg);
  background: var(--white);
  box-shadow: 0 12px 40px rgba(11, 31, 58, 0.08);
  margin-bottom: var(--space-8);
}

.case-meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.case-meta-k {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-500);
}

.case-meta-v {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--gray-900);
}

.case-meta-desc {
  flex-basis: 100%;
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--gray-700);
}

/* Case detail */
.case-gallery {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  /* 图集限宽：图片展示尺寸不过大，避免拉伸发糊 */
  max-width: 880px;
  margin-inline: auto;
}

.case-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(11, 31, 58, 0.08);
}

.case-figure img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--gray-100);
}

.case-figure figcaption {
  padding: var(--space-4);
  background: var(--white);
  font-size: 0.9375rem;
  color: var(--gray-700);
}

.case-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-10);
  padding-top: var(--space-8);
  border-top: 1px solid var(--gray-300);
}

/* About */
.about-intro {
  background: var(--white);
}

.about-intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  align-items: center;
}

@media (min-width: 1024px) {
  .about-intro-grid {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.about-intro-grid .about-stat {
  text-align: center;
}

.about-intro-grid .stat-number {
  font-family: var(--font-en);
  font-size: clamp(3.5rem, 7vw, 5rem);
  font-weight: 800;
  line-height: 1;
  color: var(--gold-500);
  white-space: nowrap;
}

.about-intro-grid .stat-number .stat-unit {
  font-size: 0.4em;
  color: var(--navy-900);
  white-space: nowrap;
}

/* Timeline */
.timeline-section {
  background: var(--cream-100);
}

.timeline {
  position: relative;
  max-width: 800px;
  margin-inline: auto;
  padding-left: var(--space-8);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gray-300);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-10);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-8) - 5px);
  top: 0.4em;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold-500);
  border: 2px solid var(--cream-100);
}

.timeline-year {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 800;
  color: var(--navy-900);
  margin-bottom: var(--space-2);
}

.timeline-content h3 {
  font-size: 1.125rem;
  color: var(--navy-900);
  margin-bottom: var(--space-2);
}

.timeline-content p {
  color: var(--gray-700);
  font-size: 0.9375rem;
}

/* Honors */
.honors-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .honors-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .honors-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.honor-card {
  padding: var(--space-6);
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 40px rgba(11, 31, 58, 0.08);
  text-align: center;
}

.honor-card span {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--gold-500);
  color: var(--navy-900);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: var(--space-4);
}

.honor-card h3 {
  font-size: 1rem;
  color: var(--navy-900);
  line-height: 1.5;
}

/* News */
.news-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.news-item {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-6);
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 30px rgba(11, 31, 58, 0.06);
  transition: transform var(--duration-fast) var(--ease-out-quart);
}

.news-item:hover {
  transform: translateX(4px);
}

.news-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 64px;
  padding-right: var(--space-6);
  border-right: 1px solid var(--gray-100);
}

.news-day {
  font-family: var(--font-en);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--navy-900);
}

.news-year {
  font-size: 0.75rem;
  color: var(--gray-500);
}

.news-item h3 {
  flex: 1;
  font-size: 1rem;
  color: var(--navy-900);
}

.news-item a {
  color: var(--gold-500);
  font-size: 0.875rem;
  font-weight: 500;
}

.news-item a:hover {
  color: var(--navy-800);
}

/* Lifestyle section */
.lifestyle-section {
  background: var(--white);
}

/* ===== 移动端报价弹层 Bottom Sheet（2026-08-25）=====
   手机端点击「快速报价/获取报价」就近留资：底部滑出、背景锁定、填完即关回原位。
   仅移动端使用；桌面仍走锚点贴底滚动。 */
.qs-overlay {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  background: rgba(7, 18, 35, 0.48);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.28s ease, visibility 0.28s ease;
}
.qs-overlay.qs-open {
  opacity: 1;
  visibility: visible;
}
.qs-sheet {
  position: relative;
  width: 100%;
  max-width: 560px;
  max-height: 84vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--white);
  border-radius: 22px 22px 0 0;
  padding: 12px 22px calc(22px + env(safe-area-inset-bottom));
  transform: translateY(100%);
  transition: transform 0.34s cubic-bezier(0.22, 1, 0.36, 1);
  box-shadow: 0 -10px 44px rgba(7, 18, 35, 0.22);
}
.qs-overlay.qs-open .qs-sheet {
  transform: translateY(0);
}
.qs-handle {
  width: 44px;
  height: 5px;
  border-radius: 3px;
  background: #d5dbe4;
  margin: 0 auto 12px;
}
.qs-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 50%;
  background: #f1f4f9;
  color: var(--navy-700);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}
.qs-close:active {
  background: #e2e8f1;
}
.qs-title {
  margin: 2px 0 6px;
  font-size: 1.32rem;
  font-weight: 700;
  color: var(--navy-800);
}
.qs-sub {
  margin: 0 0 16px;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--navy-500);
}
.qs-form .qs-field {
  margin-bottom: 13px;
}
.qs-form label {
  display: block;
  margin-bottom: 5px;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--navy-800);
}
.qs-form input,
.qs-form select {
  width: 100%;
  box-sizing: border-box;
  padding: 12px 14px;
  font-size: 1rem;
  color: var(--navy-800);
  background: #f7f9fc;
  border: 1px solid #d8dee8;
  border-radius: 10px;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.qs-form input:focus,
.qs-form select:focus {
  border-color: var(--gold-500);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.14);
}
.qs-form select {
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%235C6B84' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 12px 8px;
}
.qs-submit {
  width: 100%;
  margin-top: 6px;
  padding: 13px 16px;
  font-size: 1.02rem;
  border-radius: 10px;
}
.qs-note {
  margin: 12px 0 0;
  font-size: 0.76rem;
  text-align: center;
  color: var(--navy-500);
}
.qs-note a {
  color: var(--gold-500);
  text-decoration: underline;
  text-underline-offset: 2px;
}