/* ===== 英文字体 Archivo（自托管子集）
   仅含本站用到的拉丁字符，25 KB，含 100–900 全部字重
   字重区间自 500 起：正文英文以 Medium 呈现，标题英文可用到 900
   授权：SIL Open Font License 1.1（可免费商用、可嵌入网站）===== */
@font-face {
  font-family: 'Archivo';
  src: url('fonts/archivo-latin-vf.woff2') format('woff2');
  font-weight: 500 900;
  font-style: normal;
  font-display: swap;
}

/* ===== 思源黑体 Noto Sans SC（自托管子集）
   仅包含本站实际用到的 1265 个字符，307 KB，含 100–900 全部字重
   授权：SIL Open Font License 1.1（可免费商用、可嵌入网站）===== */
@font-face {
  font-family: 'Noto Sans SC';
  src: url('fonts/noto-sans-sc-vf.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

    :root {
      --primary: #0a6e4e;
      --primary-dark: #064d37;
      --primary-light: #12956a;
      --accent: #f0a500;
      --accent-light: #ffc740;
      --bg: #f7f9f8;
      --text: #1a2a22;
      --text-light: #4a6358;
      --white: #ffffff;
      --gray: #e8eeeb;
      --brand-green: #57ac40;
      --roadmap-accent: #93be24;
      --gradient: linear-gradient(135deg, #57ac40 0%, #52a63b 55%, #4a9c35 100%);
      --shadow: 0 8px 40px rgba(87,172,64,0.16);
      --radius: 16px;
      --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
    }

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

    html { scroll-behavior: smooth; scroll-padding-top: 84px; }

    body {
      font-family: 'Archivo', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Noto Sans JP', 'Segoe UI', Arial, sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.7;
      overflow-x: hidden;
    }

    /* ===== NAVBAR ===== */
    .navbar {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 1000;
      background: rgba(255,255,255,0.96);
      backdrop-filter: blur(12px);
      box-shadow: 0 2px 20px rgba(10,110,78,0.10);
      height: 72px;
      display: flex;
      align-items: center;
      padding: 0 4%;
      gap: 0;
    }

    .navbar-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
      flex-shrink: 0;
      max-width: 420px;
    }

    .logo-text {
      display: flex; flex-direction: column;
      justify-content: center;
    }

    .logo-text .name-cn {
      font-size: 28px; font-weight: 700;
      color: var(--primary-dark);
      line-height: 1;
      white-space: nowrap;
    }

    .logo-text .name-cn sup {
      font-size: 14px;
      vertical-align: super;
      line-height: 0;
    }

    .logo-text .name-en {
      font-size: 22px; color: var(--primary-light);
      letter-spacing: 1.5px;
      font-weight: 700;
      white-space: nowrap;
      line-height: 1;
    }

    .nav-links {
      display: flex; align-items: center; gap: 8px;
      margin-left: auto;
      list-style: none;
      flex-shrink: 1;
    }

    .nav-links a {
      display: inline-block;
      text-decoration: none;
      font-size: 18px;
      color: var(--text-light);
      padding: 8px 16px;
      border-radius: 8px;
      transition: var(--transition);
      white-space: nowrap;
    }

    .nav-links a.active {
      color: var(--primary);
      background: rgba(10,110,78,0.08);
    }

    .nav-links a:hover {
      color: var(--primary);
      background: rgba(10,110,78,0.08);
    }

    .lang-switcher {
      display: flex; gap: 4px; margin-left: 12px;
      border-left: 1px solid var(--gray);
      padding-left: 12px;
      flex-shrink: 0;
    }

    .lang-btn {
      padding: 5px 8px;
      border: 1.5px solid var(--gray);
      border-radius: 6px;
      background: none;
      font-size: 11px;
      color: var(--text-light);
      cursor: pointer;
      transition: var(--transition);
      font-weight: 500;
      white-space: nowrap;
    }

    .lang-btn:hover, .lang-btn.active {
      background: var(--primary);
      color: white;
      border-color: var(--primary);
    }

    /* ===== HERO ===== */
    .hero {
      min-height: 100vh;
      background: var(--gradient);
      display: flex; align-items: center;
      position: relative;
      overflow: hidden;
      padding: 100px 5% 60px;
    }

    /* .hero::before（右上角装饰圆）已按需求移除 */

    .hero::after {
      content: '';
      position: absolute;
      bottom: -200px; left: -150px;
      width: 600px; height: 600px;
      border-radius: 50%;
      background: rgba(255,255,255,0.05);
    }

    .hero-content {
      max-width: 600px;
      position: relative; z-index: 1;
    }

    .hero-badge {
      display: inline-flex; align-items: center; gap: 8px;
      background: rgba(255,255,255,0.18);
      border: 1px solid rgba(255,255,255,0.3);
      color: white;
      padding: 6px 16px;
      border-radius: 50px;
      font-size: 13px;
      margin-bottom: 28px;
      backdrop-filter: blur(6px);
    }

    .hero-badge span { width: 8px; height: 8px; background: var(--accent-light); border-radius: 50%; display: inline-block; animation: pulse 2s infinite; }

    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(1.3); }
    }

    .hero h1 {
      font-size: clamp(32px, 5vw, 58px);
      font-weight: 800;
      color: white;
      line-height: 1.2;
      margin-bottom: 20px;
    }

    .hero-tagline {
      font-size: clamp(16px, 2.5vw, 22px);
      font-weight: 600;
      color: white;
      margin-bottom: 16px;
      text-align: left;
    }

    .hero h1 .highlight {
      color: var(--accent-light);
    }

    /* 亮绿背景（#57ac40）下增强白色文字可读性 */
    .hero h1, .hero .hero-tagline, .hero p,
    .page-hero h1, .page-hero .page-hero-tagline, .page-hero p {
      text-shadow: 0 2px 12px rgba(0,0,0,0.22), 0 1px 2px rgba(0,0,0,0.12);
    }

    .hero p {
      font-size: 18px;
      color: rgba(255,255,255,0.85);
      margin-bottom: 40px;
      max-width: 520px;
    }

    .hero-btns {
      display: flex; gap: 16px; flex-wrap: wrap;
    }

    .btn-primary {
      display: inline-block;
      padding: 14px 32px;
      background: white;
      color: var(--primary-dark);
      border: none;
      border-radius: 50px;
      font-size: 15px;
      font-weight: 700;
      cursor: pointer;
      text-decoration: none;
      transition: var(--transition);
      box-shadow: 0 4px 20px rgba(0,0,0,0.2);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 30px rgba(0,0,0,0.25);
    }

    .btn-outline {
      display: inline-block;
      padding: 14px 32px;
      background: rgba(255,255,255,0.15);
      color: white;
      border: 2px solid rgba(255,255,255,0.5);
      border-radius: 50px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      text-decoration: none;
      transition: var(--transition);
    }

    .btn-outline:hover {
      background: rgba(255,255,255,0.28);
      border-color: white;
    }

    .hero-visual {
    position: absolute; top: 0; right: 0; bottom: 0; left: auto;
    width: 62%;
    z-index: 0;
    /* 左侧透明（露出底色）→ 右侧不透明（完整图片），中间柔和过渡 */
    -webkit-mask-image: linear-gradient(to right, transparent 0%, transparent 11%, rgba(0,0,0,0.35) 15%, rgba(0,0,0,0.8) 18.5%, #000 21%);
    mask-image: linear-gradient(to right, transparent 0%, transparent 11%, rgba(0,0,0,0.35) 15%, rgba(0,0,0,0.8) 18.5%, #000 21%);
    }

    .solar-panel-art {
      width: 100%; height: auto;
    }

    /* ===== STATS ===== */
    .stats-bar {
      background: white;
      padding: 32px 5%;
      display: flex; justify-content: center; gap: 40px; flex-wrap: wrap;
      box-shadow: var(--shadow);
    }

    .stat-item {
      text-align: center;
    }

    .stat-item .num {
      font-size: 36px; font-weight: 800;
      color: var(--primary);
    }

    .stat-item .num span { font-size: 20px; }

    .stat-item .label {
      font-size: 13px; color: var(--text-light);
      margin-top: 4px;
    }

    /* ===== SECTIONS COMMON ===== */
    .section {
      padding: 90px 5%;
    }

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

    .section-tag {
      display: inline-block;
      background: rgba(10,110,78,0.1);
      color: var(--primary);
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 1.5px;
      padding: 5px 16px;
      border-radius: 50px;
      margin-bottom: 16px;
      text-transform: uppercase;
    }

    .section-title {
      font-size: clamp(26px, 3.5vw, 42px);
      font-weight: 800;
      color: var(--text);
      margin-bottom: 16px;
    }

    .section-tagline {
      font-size: clamp(14px, 1.8vw, 18px);
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 12px;
      display: block;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-light);
      max-width: 600px;
      margin: 0 auto;
    }

    /* ===== PRODUCT TABS ===== */
    .product-tabs {
      display: flex;
      justify-content: center;
      gap: 12px;
      margin: 0 auto 44px;
      max-width: 900px;
      flex-wrap: wrap;
    }

    .product-tab-btn {
      padding: 12px 26px;
      border: 2px solid var(--gray);
      background: white;
      color: var(--text-light);
      border-radius: 50px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      white-space: nowrap;
    }

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

    .product-tab-btn.active {
      background: var(--gradient);
      color: white;
      border-color: transparent;
      box-shadow: 0 6px 20px rgba(10,110,78,0.25);
    }

    .product-pane { display: none; }
    .product-pane.active { display: block; }

    /* ===== PRODUCT CARDS (方案C) ===== */
    .product-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      max-width: 1100px;
      margin: 0 auto 64px;
    }

    .product-card {
      display: block;
      background: white;
      border: 1.5px solid var(--gray);
      border-radius: var(--radius);
      overflow: hidden;
      cursor: pointer;
      transition: var(--transition);
      text-decoration: none;
      color: inherit;
    }

    .product-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow);
      border-color: rgba(10,110,78,0.2);
    }

    .product-card-img {
      height: 190px;
      background: var(--gradient);
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }

    .product-card-img svg { width: 80%; height: auto; }

    .product-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .product-card-img .card-placeholder {
      color: white;
      font-size: 14px;
      font-weight: 600;
      text-align: center;
      line-height: 2;
      padding: 16px;
    }

    .product-card-body { padding: 20px 22px; }

    .product-card-body h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 8px;
      line-height: 1.5;
    }

    .product-card-body p {
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 12px;
      line-height: 1.7;
    }

    .product-card-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
    }

    .product-detail { margin-bottom: 80px; }
    .product-detail:last-child { margin-bottom: 0; }
    .product-detail .product-grid { margin: 0 auto; }

    /* ===== PRODUCT ===== */
    .product-section {
      background: white;
    }

    .product-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
      max-width: 1200px;
      margin: 0 auto;
    }

    .product-visual {
      position: relative;
    }

    .product-main-img {
      width: 100%;
      border-radius: var(--radius);
      background: var(--gradient);
      aspect-ratio: 4/3;
      display: flex; align-items: center; justify-content: center;
      overflow: hidden;
      box-shadow: var(--shadow);
    }

    .product-caption {
      text-align: center;
      margin-top: 12px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 1.5px;
      color: var(--primary-light);
    }

    .product-badge-float {
      position: absolute;
      top: -16px; right: -16px;
      background: var(--accent);
      color: white;
      font-size: 12px;
      font-weight: 700;
      padding: 8px 16px;
      border-radius: 50px;
      box-shadow: 0 4px 16px rgba(240,165,0,0.4);
    }

    .product-info { }

    .product-name {
      font-size: 28px;
      font-weight: 800;
      color: var(--text);
      margin-bottom: 16px;
      line-height: 1.6;
    }

    .product-tagline {
      font-size: 16px;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 12px;
    }

    .product-desc sup {
      font-size: 12px;
      vertical-align: super;
      line-height: 0;
    }

    .section-title sup {
      font-size: 16px;
      vertical-align: super;
      line-height: 0;
    }

    .product-desc {
      font-size: 15px;
      color: var(--text-light);
      margin-bottom: 28px;
      line-height: 1.8;
    }

    .spec-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-bottom: 32px;
    }

    .spec-item {
      background: var(--bg);
      border-radius: 12px;
      padding: 16px;
      display: flex;
      align-items: flex-start;
      gap: 12px;
    }

    .spec-icon {
      width: 36px; height: 36px;
      background: rgba(10,110,78,0.1);
      border-radius: 9px;
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
    }

    .spec-icon svg { width: 18px; height: 18px; stroke: var(--primary); fill: none; }

    .spec-label { font-size: 11px; color: var(--text-light); }
    .spec-val { font-size: 14px; font-weight: 700; color: var(--text); }

    /* ===== FEATURES ===== */
    .features-section {
      background: var(--bg);
    }

    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      max-width: 1100px;
      margin: 0 auto;
    }

    .feature-card {
      background: white;
      border-radius: var(--radius);
      padding: 32px 24px;
      box-shadow: 0 4px 24px rgba(10,110,78,0.07);
      transition: var(--transition);
      border: 1.5px solid transparent;
    }

    .feature-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow);
      border-color: rgba(10,110,78,0.15);
    }

    .feature-icon {
      width: 56px; height: 56px;
      background: var(--gradient);
      border-radius: 14px;
      display: flex; align-items: center; justify-content: center;
      margin-bottom: 20px;
    }

    .feature-icon svg { width: 28px; height: 28px; stroke: white; fill: none; }

    .feature-title {
      font-size: 18px; font-weight: 700;
      color: var(--text);
      margin-bottom: 10px;
    }

    .feature-desc {
      font-size: 14px; color: var(--text-light);
      line-height: 1.7;
    }

    /* ===== TECH SPECS ===== */
    .specs-section {
      background: white;
    }

    .specs-table {
      max-width: 900px;
      margin: 0 auto;
      border-radius: var(--radius);
      overflow-x: auto;
      box-shadow: 0 4px 24px rgba(10,110,78,0.08);
    }

    .specs-table table {
      width: 100%;
      min-width: 480px;
      border-collapse: collapse;
    }

    .specs-table thead tr {
      background: var(--gradient);
    }

    .specs-table thead th {
      color: white;
      padding: 18px 24px;
      text-align: left;
      font-size: 14px;
      font-weight: 700;
    }

    .specs-table tbody tr {
      border-bottom: 1px solid var(--gray);
      transition: var(--transition);
    }

    .specs-table tbody tr:last-child { border-bottom: none; }

    .specs-table tbody tr:hover { background: rgba(10,110,78,0.04); }

    .specs-table tbody td {
      padding: 16px 24px;
      font-size: 14px;
      color: var(--text);
    }

    .specs-table tbody td:first-child {
      color: var(--text-light);
      font-weight: 500;
    }

    .specs-table tbody td:last-child {
      font-weight: 600;
      color: var(--primary-dark);
      text-align: center;
    }

    .specs-note {
      text-align: center;
      margin-top: 16px;
      font-size: 13px;
      color: var(--text-light);
    }

    /* ===== ABOUT ===== */
    .about-section {
      background: var(--bg);
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
      max-width: 1200px;
      margin: 0 auto;
    }

    .about-img {
      border-radius: var(--radius);
      background: var(--gradient);
      aspect-ratio: 4/3;
      display: flex; align-items: center; justify-content: center;
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .about-content .section-header {
      text-align: left;
    }

    .about-content .section-desc {
      text-align: left;
      max-width: none;
      margin: 0;
      margin-bottom: 24px;
    }

    .about-points {
      list-style: none;
      display: flex; flex-direction: column; gap: 12px;
    }

    .about-points li {
      display: flex; align-items: flex-start; gap: 12px;
      font-size: 14px; color: var(--text-light);
    }

    .about-points li::before {
      content: '';
      width: 20px; height: 20px; min-width: 20px;
      background: rgba(10,110,78,0.12);
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      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='%230a6e4e' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: center;
      margin-top: 2px;
    }

    /* ===== TIMELINE (MILESTONES) ===== */
    .timeline-section { background: white; }

    .timeline {
      max-width: 900px;
      margin: 0 auto;
      position: relative;
      padding-left: 44px;
    }

    .timeline::before {
      content: '';
      position: absolute;
      left: 13px; top: 10px; bottom: 10px;
      width: 3px;
      background: linear-gradient(180deg, var(--primary-light), var(--primary));
      border-radius: 3px;
    }

    .timeline-item {
      position: relative;
      margin-bottom: 32px;
      background: var(--bg);
      border-radius: 14px;
      padding: 22px 26px;
      box-shadow: 0 4px 20px rgba(10,110,78,0.06);
      transition: var(--transition);
    }

    .timeline-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow);
    }

    .timeline-item::before {
      content: '';
      position: absolute;
      left: -37px; top: 28px;
      width: 16px; height: 16px;
      border-radius: 50%;
      background: var(--accent);
      border: 3px solid white;
      box-shadow: 0 0 0 3px rgba(240,165,0,0.3);
    }

    .timeline-year {
      display: inline-block;
      background: var(--gradient);
      color: white;
      font-size: 13px;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: 50px;
      margin-bottom: 10px;
    }

    .timeline-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 6px;
    }

    .timeline-desc {
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.8;
    }

    /* ===== CONTACT ===== */
    .contact-section {
      background: var(--gradient);
      position: relative;
      overflow: hidden;
    }

    .contact-section::before {
      content: '';
      position: absolute;
      top: -100px; right: -100px;
      width: 400px; height: 400px;
      border-radius: 50%;
      background: rgba(255,255,255,0.06);
    }

    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      max-width: 1100px;
      margin: 0 auto;
      position: relative; z-index: 1;
    }

    .contact-info .section-header {
      text-align: left;
    }

    .contact-info .section-tag {
      background: rgba(255,255,255,0.2);
      color: white;
    }

    .contact-info .section-title {
      color: white;
    }

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

    .contact-item {
      display: flex; align-items: flex-start; gap: 16px;
    }

    .contact-icon {
      width: 44px; height: 44px; min-width: 44px;
      background: rgba(255,255,255,0.15);
      border-radius: 12px;
      display: flex; align-items: center; justify-content: center;
    }

    .contact-icon svg { width: 20px; height: 20px; stroke: white; fill: none; }

    .contact-text .label {
      font-size: 12px; color: rgba(255,255,255,0.65); margin-bottom: 2px;
    }

    .contact-text .val {
      font-size: 15px; color: white; font-weight: 600;
    }

    .contact-form-wrap {
      background: white;
      border-radius: 20px;
      padding: 36px 32px;
      box-shadow: 0 20px 60px rgba(0,0,0,0.15);
    }

    .form-title {
      font-size: 20px; font-weight: 700;
      color: var(--text);
      margin-bottom: 24px;
    }

    .form-row {
      display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
    }

    .form-group {
      margin-bottom: 16px;
    }

    .form-group label {
      display: block;
      font-size: 13px; color: var(--text-light);
      margin-bottom: 6px;
      font-weight: 500;
    }

    .form-group input,
    .form-group textarea {
      width: 100%;
      padding: 12px 14px;
      border: 1.5px solid var(--gray);
      border-radius: 10px;
      font-size: 14px;
      color: var(--text);
      outline: none;
      transition: var(--transition);
      font-family: inherit;
      background: var(--bg);
    }

    .form-group input:focus,
    .form-group textarea:focus {
      border-color: var(--primary);
      background: white;
      box-shadow: 0 0 0 3px rgba(10,110,78,0.1);
    }

    .form-group textarea { resize: vertical; min-height: 90px; }

    .btn-submit {
      width: 100%;
      padding: 14px;
      background: var(--gradient);
      color: white;
      border: none;
      border-radius: 50px;
      font-size: 15px;
      font-weight: 700;
      cursor: pointer;
      transition: var(--transition);
    }

    .btn-submit:hover {
      opacity: 0.9;
      transform: translateY(-2px);
      box-shadow: 0 6px 24px rgba(10,110,78,0.35);
    }

    /* ===== FOOTER ===== */
    .footer {
      background: #0d2018;
      color: rgba(255,255,255,0.6);
      padding: 48px 5% 28px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 40px;
    }

    .footer-brand .logo-text .name-cn { color: white; font-size: 20px; margin-bottom: 8px; }
    .footer-brand .logo-text .name-en { color: rgba(255,255,255,0.45); font-size: 16px; }

    .footer-brand p {
      margin-top: 16px;
      font-size: 13px;
      line-height: 1.8;
      max-width: 340px;
    }

    .footer-col h4 {
      color: white;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .footer-col ul { list-style: none; }

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

    .footer-col ul li a {
      font-size: 13px;
      color: rgba(255,255,255,0.55);
      text-decoration: none;
      transition: var(--transition);
    }

    .footer-col ul li a:hover { color: var(--primary-light); }

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 12px;
    }

    /* ===== SVG ILLUSTRATIONS ===== */
    .solar-svg {
      width: 85%; height: auto; filter: drop-shadow(0 20px 40px rgba(0,0,0,0.2));
    }

    /* ===== RESPONSIVE ===== */
    @media (max-width: 900px) {
      .product-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; }
      .product-cards { grid-template-columns: 1fr; }
      .features-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .hero-visual { display: none; }
      .spec-list { grid-template-columns: 1fr; }
    }

    /* 汉堡菜单按钮 */
    .nav-toggle {
      display: none;
      background: none;
      border: 1.5px solid var(--gray);
      border-radius: 8px;
      width: 42px; height: 40px;
      font-size: 20px;
      line-height: 1;
      color: var(--primary-dark);
      cursor: pointer;
      margin-left: 12px;
      flex-shrink: 0;
    }

    @media (max-width: 600px) {
      .features-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .form-row { grid-template-columns: 1fr; }
      .nav-toggle { display: block; }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px; left: 0; right: 0;
        background: white;
        flex-direction: column;
        align-items: stretch;
        padding: 12px 4%;
        box-shadow: 0 12px 30px rgba(10,110,78,0.12);
        gap: 4px;
      }
      .navbar.menu-open .nav-links { display: flex; }
      .navbar.menu-open .nav-links a { display: block; text-align: center; padding: 12px; }
      .stats-bar { gap: 24px; }
    }

    @media (min-width: 901px) and (max-width: 1100px) {
      .product-cards { gap: 16px; }
      .product-card-body { padding: 16px 18px; }
    }

    /* ===== LANGUAGE SECTIONS ===== */
    [data-lang] { display: none; }
    [data-lang].active { display: block; }
    [data-lang-inline] { display: none; }
    [data-lang-inline].active { display: inline; }
    .hero h1 [data-lang] { display: none; }
    .hero h1 [data-lang].active { display: block; }
    .hero-tagline [data-lang] { display: none; }
    .hero-tagline [data-lang].active { display: block; }

    /* scroll reveal */
    .reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .reveal.visible {
      opacity: 1;
      transform: none;
    }

    /* map placeholder */
    .map-placeholder {
      background: var(--gray);
      border-radius: 12px;
      height: 250px;
      margin-top: 20px;
      overflow: hidden;
      position: relative;
    }

    .map-card {
      width: 100%;
      height: 100%;
      background: var(--gradient);
      color: white;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 14px;
      padding: 20px;
      text-align: center;
    }

    .map-card .map-pin {
      width: 42px; height: 42px;
      flex-shrink: 0;
    }

    .map-card .map-addr {
      font-size: 14px;
      font-weight: 600;
      line-height: 1.7;
      max-width: 92%;
    }

    .map-card .map-links {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
      justify-content: center;
    }

    .map-card .map-links a {
      background: rgba(255,255,255,0.15);
      border: 1px solid rgba(255,255,255,0.4);
      color: white;
      padding: 8px 18px;
      border-radius: 50px;
      font-size: 13px;
      font-weight: 600;
      text-decoration: none;
      transition: var(--transition);
      white-space: nowrap;
    }

    .map-card .map-links a:hover {
      background: rgba(255,255,255,0.3);
      transform: translateY(-2px);
    }
  

/* ===== 多页版专属样式 ===== */
/* 产品页 Hero */
.page-hero {
  min-height: 48vh;
  background: var(--gradient);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 130px 5% 60px;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -120px; right: -100px;
  width: 520px; height: 520px;
  border-radius: 50%;
  background: rgba(255,255,255,0.07);
}

.page-hero-content {
  flex: 1;
  min-width: 0;
  position: relative;
  z-index: 1;
}

.page-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.3);
  color: white;
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 13px;
  margin-bottom: 22px;
  backdrop-filter: blur(6px);
}

.page-hero h1 {
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 800;
  color: white;
  line-height: 1.35;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
  text-decoration: none;
}

.page-hero-tagline {
  font-size: clamp(15px, 2vw, 19px);
  font-weight: 600;
  color: var(--accent-light);
  margin-bottom: 14px;
  letter-spacing: 0.3px;
  line-height: 1.6;
}

.page-hero p {
  font-size: 16px;
  color: rgba(255,255,255,0.85);
  max-width: 640px;
  line-height: 1.8;
}

/* 面包屑 */
.breadcrumb {
  max-width: 1200px;
  margin: 0 auto;
  padding: 86px 5% 0;
  font-size: 13px;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--primary);
  text-decoration: none;
}

.breadcrumb a:hover { text-decoration: underline; }

.breadcrumb .back-home {
  margin-left: auto;
  color: var(--primary);
  text-decoration: none;
  white-space: nowrap;
  font-weight: 600;
  border: 1.5px solid rgba(10,110,78,0.25);
  padding: 6px 16px;
  border-radius: 50px;
  background: rgba(10,110,78,0.06);
}

.breadcrumb .back-home:hover {
  background: rgba(10,110,78,0.12);
}

/* 产品页通用分区 */
.page-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 60px 5%;
}

.page-main-alt { background: var(--bg); }

.page-block-title {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  color: var(--text);
  text-align: center;
  margin-bottom: 10px;
}

.page-block-sub {
  font-size: 14px;
  color: var(--text-light);
  text-align: center;
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

/* 应用场景标签 */
.scene-wrap { text-align: center; }

.scene-tag {
  display: inline-block;
  background: rgba(10,110,78,0.08);
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 50px;
  margin: 6px;
  border: 1px solid rgba(10,110,78,0.15);
}

/* 产品页表单区 */
.page-form-section {
  background: var(--gradient);
  position: relative;
  overflow: hidden;
  padding: 80px 5%;
}

.page-form-section::before {
  content: '';
  position: absolute;
  top: -100px; right: -100px;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
}

.page-form-wrap {
  max-width: 720px;
  margin: 0 auto;
  background: white;
  border-radius: 20px;
  padding: 36px 32px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
  position: relative;
  z-index: 1;
}

/* 返回首页 */
.back-home {
  display: inline-block;
  margin-top: 22px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
}

.back-home:hover { text-decoration: underline; }


/* 产品页 Hero 双栏（左文右图） */
.page-hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  max-width: 1100px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  flex-wrap: wrap;
}

.page-hero-img {
  width: 400px;
  max-width: 42vw;
  flex-shrink: 0;
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.25);
  display: block;
}

@media (max-width: 900px) {
  .page-hero-inner { flex-direction: column; text-align: center; }
  .page-hero p { margin: 0 auto; }
  .page-hero-img { width: min(320px, 80vw); }
}


/* 产品页交叉引导 */
.next-products {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 5% 70px;
  text-align: center;
}

.next-products-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 24px;
}

.next-products-grid {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.next-product-card {
  display: block;
  width: 240px;
  background: white;
  border: 1.5px solid var(--gray);
  border-radius: 14px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

.next-product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(10,110,78,0.2);
}

.next-product-card .next-img {
  height: 110px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.next-product-card .next-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.next-product-card .next-name {
  padding: 14px 16px 4px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.5;
}

.next-product-card .next-arrow {
  padding: 0 16px 14px;
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
}


/* ===== 行业洞察（痛点对照） ===== */
.insights-section { background: white; }

.insights-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  max-width: 1100px;
  margin: 0 auto;
}

.insight-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 28px 26px;
  border-left: 4px solid var(--primary);
}

.insight-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.6;
}

.insight-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.insight-list li {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.75;
  padding-left: 18px;
  position: relative;
}

.insight-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 9px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--primary);
}

@media (max-width: 900px) { .insights-grid { grid-template-columns: 1fr; } }

/* ===== 四大核心能力（2×2） ===== */
.features-grid-4 {
  grid-template-columns: repeat(2, 1fr);
  max-width: 1000px;
}

.cap-points {
  list-style: none;
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cap-points li {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
  padding-left: 16px;
  position: relative;
}

.cap-points li::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--primary-light);
}

@media (max-width: 900px) { .features-grid-4 { grid-template-columns: 1fr; } }

/* ===== 产品路线图 ===== */
.roadmap-section { background: var(--bg); }

.roadmap-group {
  max-width: 1100px;
  margin: 0 auto 46px;
}

.roadmap-group:last-child { margin-bottom: 0; }

.roadmap-group-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 20px;
  padding-left: 14px;
  border-left: 4px solid var(--roadmap-accent);
  line-height: 1.4;
}

.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.roadmap-card {
  background: white;
  border-radius: 14px;
  padding: 22px 20px;
  box-shadow: 0 4px 20px rgba(10,110,78,0.06);
  border-top: 3px solid var(--primary);
  transition: var(--transition);
}

.roadmap-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.roadmap-code {
  font-size: 12px;
  font-weight: 700;
  color: var(--roadmap-accent);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.roadmap-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.5;
}

.roadmap-spec {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

.roadmap-date {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  background: rgba(10,110,78,0.08);
  padding: 4px 12px;
  border-radius: 50px;
}

@media (max-width: 900px) { .roadmap-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .roadmap-grid { grid-template-columns: 1fr; } }

/* ===== 使命 / 愿景 / 价值观 ===== */
.mvv-section { background: white; }

.mvv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
}

.mvv-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 34px 26px;
  text-align: center;
  border: 1.5px solid transparent;
  transition: var(--transition);
}

.mvv-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: rgba(10,110,78,0.15);
  background: white;
}

.mvv-icon {
  width: 54px; height: 54px;
  margin: 0 auto 18px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}

.mvv-icon svg { width: 26px; height: 26px; stroke: white; fill: none; }

.mvv-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.mvv-text {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.9;
}

@media (max-width: 900px) { .mvv-grid { grid-template-columns: 1fr; } }


/* ===== 商标 logo ===== */
.logo-img {
  height: 48px;
  width: auto;
  display: block;
}

/* 页脚 logo：深色背景使用白色版商标，与公司全名并排 */
.footer-logo {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-logo .logo-img { height: 42px; }

@media (max-width: 600px) {
  .logo-img { height: 40px; }
  .footer-logo .logo-img { height: 36px; }
}


/* 导航为 6 项时，中等屏幕收紧排版避免挤压 */
@media (max-width: 1200px) and (min-width: 601px) {
  .nav-links { gap: 4px; }
  .nav-links a { font-size: 15px; padding: 8px 10px; }
  .logo-text .name-cn { font-size: 22px; }
}


/* 页脚备案号链接 */
.icp-link {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

.icp-link:hover { color: rgba(255,255,255,0.85); text-decoration: underline; }


/* 隐私政策页 */
.policy { max-width: 860px; margin: 0 auto; }

.policy-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 12px;
}

.policy-date {
  font-size: 14px;
  color: var(--text-light);
  padding-bottom: 22px;
  border-bottom: 1px solid rgba(10,110,78,0.15);
  margin-bottom: 40px;
}

.policy-section { margin-bottom: 34px; }

.policy-section h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 10px;
  line-height: 1.6;
}

.policy-section p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.95;
}

@media (max-width: 600px) {
  .policy-title { font-size: 24px; }
  .policy-section h2 { font-size: 16px; }
  .policy-section p { font-size: 14px; }
}


/* ===== 待替换图片占位（深色背景） ===== */
.img-placeholder {
  width: 100%;
  min-height: 280px;
  border: 2px dashed rgba(255,255,255,0.4);
  border-radius: 16px;
  background: rgba(255,255,255,0.07);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 32px 24px;
  text-align: center;
}

.img-placeholder .ph-icon { width: 34px; height: 34px; flex-shrink: 0; }

.img-placeholder .ph-title {
  font-size: 15px;
  font-weight: 700;
  color: rgba(255,255,255,0.95);
  line-height: 1.6;
}

.img-placeholder .ph-note {
  font-size: 13px;
  color: rgba(255,255,255,0.72);
  line-height: 1.85;
  max-width: 400px;
}

.img-placeholder .ph-size {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.5px;
}

@media (max-width: 600px) {
  .img-placeholder { min-height: 200px; padding: 24px 16px; gap: 9px; }
  .img-placeholder .ph-title { font-size: 14px; }
  .img-placeholder .ph-note { font-size: 12px; }
}


/* 首屏配图：铺满右侧整块，由容器 mask 控制左侧渐变过渡
   如需调整过渡位置：改 .hero-visual 的 mask-image 百分比
   如需调整图片占比：改 .hero-visual 的 width（当前 62%） */
.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center right;
  display: block;
}


/* 关于我们配图：填充 4:3 容器 */
.about-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}


/* ===== 产品页 · 方案对比表 ===== */
.compare-section { background: var(--bg); }

.compare-wrap {
  max-width: 1100px;
  margin: 0 auto;
  overflow-x: auto;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
  background: white;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(10,110,78,0.06);
}

.compare-table th {
  background: var(--gradient);
  color: white;
  font-size: 14px;
  font-weight: 700;
  text-align: left;
  padding: 15px 18px;
  line-height: 1.5;
}

.compare-table td {
  padding: 14px 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-light);
  border-bottom: 1px solid var(--gray);
  vertical-align: top;
}

.compare-table tbody tr:last-child td { border-bottom: none; }

.compare-table td:first-child { font-weight: 700; color: var(--text); }

.compare-table td:last-child {
  background: rgba(87,172,64,0.06);
  color: var(--primary-dark);
}

.compare-note {
  max-width: 1100px;
  margin: 16px auto 0;
  font-size: 13px;
  color: var(--text-light);
}

@media (max-width: 600px) {
  .compare-table th, .compare-table td { padding: 12px 14px; font-size: 13px; }
}


/* ===== 产品结构 ===== */
.struct-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  max-width: 1100px;
  margin: 0 auto;
}

.struct-card {
  background: white;
  border-radius: 14px;
  box-shadow: 0 4px 20px rgba(10,110,78,0.06);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.struct-media {
  height: 300px;
  background: #f5f8f6;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.struct-media img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
}

.struct-body { padding: 18px 20px 22px; flex: 1; }

.struct-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.5;
}

.struct-note { font-size: 13px; color: var(--text-light); line-height: 1.75; }

/* 浅色背景占位框（待补素材） */
.ph-light {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 9px;
  padding: 16px;
  border: 2px dashed rgba(10,110,78,0.30);
  border-radius: 10px;
  background: rgba(10,110,78,0.035);
  overflow: hidden;
}

.ph-light svg { width: 26px; height: 26px; stroke: var(--primary); opacity: 0.5; flex-shrink: 0; }
.ph-light .ph-t { font-size: 13px; font-weight: 700; color: var(--primary-dark); line-height: 1.5; }
.ph-light .ph-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  color: var(--primary);
  background: rgba(10,110,78,0.10);
  padding: 3px 10px;
  border-radius: 50px;
}
.ph-light .ph-d { font-size: 12px; color: var(--text-light); line-height: 1.65; }

/* ===== 专利与资质 ===== */
.patent-section { background: var(--bg); }
.patent-wrap { max-width: 1100px; margin: 0 auto; }

.patent-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 20px;
  margin-bottom: 36px;
}

.patent-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: white;
  border-radius: 12px;
  padding: 16px 18px;
  box-shadow: 0 3px 14px rgba(10,110,78,0.05);
}

.patent-status {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 11px;
  border-radius: 50px;
  background: rgba(87,172,64,0.18);
  color: var(--primary-dark);
  white-space: nowrap;
}

.patent-status.pending { background: rgba(240,165,0,0.18); color: #8a6200; }

.patent-item .pi-name { font-size: 14px; font-weight: 700; color: var(--text); line-height: 1.5; }
.patent-item .pi-no { font-size: 12.5px; color: var(--text-light); margin-top: 5px; letter-spacing: 0.3px; word-break: break-all; }

.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }

.cert-card {
  background: white;
  border-radius: 12px;
  padding: 12px 12px 14px;
  box-shadow: 0 3px 14px rgba(10,110,78,0.05);
  display: flex;
  flex-direction: column;
}

.cert-media { height: 190px; }
.cert-media .ph-light { gap: 7px; padding: 12px; }
.cert-media .ph-light .ph-t { font-size: 12px; }
.cert-cap { font-size: 12px; color: var(--text-light); line-height: 1.65; text-align: center; margin-top: 12px; }

@media (max-width: 900px) {
  .struct-grid { grid-template-columns: 1fr; }
  .struct-media { height: 240px; }
  .patent-list { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .cert-grid { grid-template-columns: 1fr; }
}


/* ===== 详情页 · 对比雷达图 ===== */
.radar-wrap { max-width: 720px; margin: 0 auto 32px; }
.radar-wrap img { width: 100%; height: auto; }

/* ===== 详情页 · 侧边目录（收起：只有圆点；悬停：展开显示文字） ===== */
.page-toc {
  position: fixed;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 40px;
  padding: 16px 0;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-radius: 0 14px 14px 0;
  box-shadow: 0 8px 30px rgba(10,110,78,0.12);
  overflow: hidden;
  transition: width 0.28s ease, box-shadow 0.28s ease;
}

.page-toc:hover, .page-toc:focus-within {
  width: 252px;
  align-items: stretch;
  box-shadow: 0 10px 40px rgba(10,110,78,0.18);
}

/* 收起时：标题与所有文字都不渲染，只剩圆点 */
.toc-title { display: none; }

.page-toc:hover .toc-title,
.page-toc:focus-within .toc-title {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.2px;
  color: var(--primary);
  text-transform: uppercase;
  white-space: nowrap;
  margin-bottom: 8px;
  padding-left: 16px;
}

.toc-links { display: flex; flex-direction: column; gap: 4px; align-items: center; }

.page-toc:hover .toc-links,
.page-toc:focus-within .toc-links { align-items: stretch; }

.toc-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  padding: 8px 0;
  border-radius: 8px;
  font-size: 13px;
  color: var(--text-light);
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease;
}

.page-toc:hover .toc-links a,
.page-toc:focus-within .toc-links a {
  justify-content: flex-start;
  gap: 10px;
  width: auto;
  padding: 7px 16px;
}

.toc-links a::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #cfdcd6;
  flex-shrink: 0;
  transition: background 0.2s ease, transform 0.2s ease;
}

.toc-links a:hover { background: rgba(87,172,64,0.10); color: var(--primary-dark); }
.toc-links a.active { color: var(--primary); font-weight: 700; background: rgba(87,172,64,0.14); }
.toc-links a.active::before { background: var(--brand-green); transform: scale(1.3); }

/* 关键：收起状态下文字彻底隐藏（优先级高于全局 [data-lang].active） */
.page-toc .toc-links a span { display: none; }

.page-toc:hover .toc-links a span.active,
.page-toc:focus-within .toc-links a span.active,
.page-toc:hover .toc-links a span[data-lang],
.page-toc:focus-within .toc-links a span[data-lang].active { display: block; }

.page-toc:hover .toc-links a span:not(.active),
.page-toc:focus-within .toc-links a span:not(.active) { display: none; }

@media (max-width: 1279px) { .page-toc { display: none; } }


/* ===== 移动端页内导航（浮标 + 底部抽屉，≤1279px 显示） ===== */
.toc-fab {
  position: fixed;
  right: 16px;
  bottom: 22px;
  z-index: 950;
  width: 48px;
  height: 48px;
  display: none;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  border: none;
  border-radius: 50%;
  box-shadow: 0 8px 24px rgba(10,110,78,0.30);
  cursor: pointer;
}

.toc-fab svg { width: 22px; height: 22px; stroke: #fff; }

.mobile-toc {
  position: fixed;
  inset: 0;
  z-index: 960;
  background: rgba(10,30,22,0.45);
  display: none;
}

.mobile-toc.open { display: block; }

.mt-sheet {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  background: #fff;
  border-radius: 18px 18px 0 0;
  padding: 18px 20px 26px;
  max-height: 78vh;
  overflow-y: auto;
  box-shadow: 0 -10px 40px rgba(0,0,0,0.18);
}

.mt-head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.mt-head span { font-size: 12px; font-weight: 700; letter-spacing: 1.2px; color: var(--primary); text-transform: uppercase; }

.mt-close {
  margin-left: auto;
  width: 32px;
  height: 32px;
  border: none;
  background: var(--gray);
  border-radius: 50%;
  font-size: 18px;
  line-height: 1;
  color: var(--text-light);
  cursor: pointer;
}

.mt-links { display: flex; flex-direction: column; }

.mt-links a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 4px;
  border-bottom: 1px solid var(--gray);
  font-size: 15px;
  color: var(--text);
  text-decoration: none;
}

.mt-links a::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #cfdcd6;
  flex-shrink: 0;
}

.mt-links a:last-child { border-bottom: none; }
.mt-links a.mt-top { color: var(--primary); font-weight: 700; }
.mt-links a.mt-top::before { background: var(--brand-green); }

@media (max-width: 1279px) { .toc-fab { display: flex; } }


/* ===== 产品优势 · 重点卡（低故障率） ===== */
.feature-card.highlight {
  background: rgba(87,172,64,0.06);
  border: 1.5px solid rgba(87,172,64,0.38);
  box-shadow: 0 10px 32px rgba(87,172,64,0.16);
}

.feature-card.highlight .feature-title { color: var(--primary-dark); }
.feature-card.highlight .feature-icon { box-shadow: 0 8px 20px rgba(87,172,64,0.30); }


/* ===== 详情页 · 首屏绿框压缩（仅本页） ===== */
.page-hero.page-hero-compact {
  min-height: 38vh;
  padding: 110px 5% 42px;
}

/* ===== 详情页 · 数据小图容器 ===== */
.viz-wrap { max-width: 900px; margin: 36px auto 0; }
.viz-wrap img { width: 100%; height: auto; display: block; }

@media (max-width: 600px) {
  .page-hero.page-hero-compact { padding: 96px 5% 34px; }
}


/* ===== 详情页 · 首屏图比例锁定（修复：height 属性导致图片被拉长） ===== */
.page-hero-compact .page-hero-img {
  height: auto;            /* 覆盖 <img height="900"> 的表现提示 */
  aspect-ratio: 4 / 3;     /* 与原图 1448×1086 一致 */
  object-fit: cover;
  width: min(460px, 42vw);
}

@media (max-width: 900px) {
  .page-hero-compact .page-hero-img { width: min(360px, 82vw); }
}


/* 产品结构 · 可点击放大的图片 */
.struct-zoom {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  cursor: zoom-in;
}

.struct-zoom img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
  transition: transform 0.25s ease;
}

.struct-zoom:hover img { transform: scale(1.03); }


/* ===== 询盘表单：蜜罐字段与提交状态 ===== */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px; height: 1px;
  opacity: 0;
  pointer-events: none;
}

.form-status {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.7;
  min-height: 0;
}

.form-status.ok { color: #0a6e4e; font-weight: 600; }
.form-status.error { color: #c0392b; font-weight: 600; }
.form-status.sending { color: #4a6358; }

.btn-submit[disabled] { opacity: 0.6; cursor: not-allowed; }


/* 专利资质 · 证书图框加高（竖版证书） */
.cert-media { height: 232px; }