:root {
    --red: #E63946;
    --red-dark: #C1121F;
    --red-light: #FFE5E8;
    --dark: #0F0F0F;
    --dark-2: #1A1A1A;
    --gray-900: #1A1A1A;
    --gray-700: #333333;
    --gray-500: #666666;
    --gray-400: #999999;
    --gray-300: #DDDDDD;
    --gray-200: #EEEEEE;
    --gray-100: #F5F5F5;
    --white: #FFFFFF;
    --border: #EAEAEA;
  }
  
  .btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--red);
    color: white;
    padding: 10px 22px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    font-family: inherit;
  }
  .btn:hover { background: var(--red-dark); transform: translateY(-1px); }
  .btn.outline {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.2);
    color: white;
  }
  .btn.outline:hover { border-color: rgba(255,255,255,0.4); background: rgba(255,255,255,0.05); }

  /* ===== Hero ===== */
  .page-hero {
    background: linear-gradient(135deg, #1A0A0A 0%, #0F0F0F 60%, #1A0A0A 100%);
    padding: 90px 0 100px;
    position: relative;
    overflow: hidden;
  }
  .page-hero::before {
    content: '';
    position: absolute;
    top: 0; right: 0; bottom: 0;
    width: 77%;
    background: var(--page-image) center/cover;
    opacity: 0.75;
    mask-image: linear-gradient(to left, black 30%, transparent 100%);
    -webkit-mask-image: linear-gradient(to left, black 30%, transparent 100%);
  }
  .page-hero::after {
    content: '';
    position: absolute;
    top: -100px; right: -100px;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(230,57,70,0.15) 0%, transparent 70%);
    border-radius: 50%;
  }
  .hero-content { position: relative; z-index: 1; max-width: 640px; }
  .hero-tag {
    font-size: 17px;
    letter-spacing: 3px;
    color: var(--red);
    font-weight: 600;
    margin-bottom: 24px;
    text-transform: uppercase;
  }
  .page-hero h1 {
    font-size: 52px;
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 24px;
    color: white;
    letter-spacing: -0.02em;
  }
  .page-hero h1 em {
    font-style: normal;
    color: var(--red);
    position: relative;
  }
  .page-hero .hero-desc {
    font-size: 16px;
    color: #999;
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 480px;
  }
  .hero-actions { display: flex; gap: 16px; }

  /* ===== Metric Band ===== */
  .metric-band {
    background: var(--gray-100);
    padding: 40px 0;
    border-bottom: 1px solid var(--border);
  }
  .metric-band .wrap {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
  }
  .metric {
    text-align: center;
    padding: 0 24px;
    border-right: 1px solid var(--gray-300);
  }
  .metric:last-child { border-right: none; }
  .metric strong {
    display: block;
    font-size: 36px;
    font-weight: 900;
    color: var(--gray-900);
    line-height: 1;
    margin-bottom: 8px;
  }
  .metric span { font-size: 14px; color: var(--gray-500); }

  /* ===== Main Content ===== */
  .content { background: var(--white); padding: 64px 0; }
  .sol-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 48px;
    align-items: start;
  }

  /* Sidebar */
  .sol-sidebar {
    position: sticky;
    top: 96px;
  }
  .sol-sidebar h3 {
    font-size: 22px;
    color: var(--gray-400);
    letter-spacing: 2px;
    margin-bottom: 16px;
    padding-left: 16px;
    text-transform: uppercase;
    font-weight: 600;
  }
  .sol-list { list-style: none; padding-left: 0; }
  .sol-item {
    padding: 14px 16px;
    border-left: 2px solid var(--gray-200);
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 2px;
  }
  .sol-item:hover {
    background: var(--gray-50);
    border-left-color: var(--gray-300);
  }
  .sol-item.active {
    background: #FEF2F3;
    border-left-color: var(--red);
  }
  .sol-item-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--gray-700);
    transition: color 0.2s;
  }
  .sol-item.active .sol-item-name { color: var(--red); font-size: 20px; }
  .sol-item-desc {
    font-size: 15px;
    color: var(--gray-400);
    margin-top: 3px;
  }

  /* Detail Panel */
  .sol-detail { min-height: 600px; }
  .detail-hero { margin-bottom: 40px; }
  .detail-hero h2 {
    font-size: 36px;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 12px;
    letter-spacing: -0.01em;
  }
  .detail-hero > p {
    font-size: 16px;
    color: var(--gray-500);
    /* max-width: 640px; */
    line-height: 1.8;
  }

  /* Section Title */
  .section-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .section-title::before {
    content: '';
    width: 4px; height: 20px;
    background: var(--red);
    border-radius: 2px;
  }

  /* 适用客户 */
  .target-box {
    background: #FEF2F3;
    border-left: 3px solid var(--red);
    border-radius: 0 8px 8px 0;
    padding: 20px 24px;
    margin-bottom: 48px;
  }
  .target-box h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--red);
    margin-bottom: 8px;
    letter-spacing: 0.5px;
  }
  .target-box p {
    font-size: 17px;
    color: var(--gray-700);
    line-height: 1.8;
  }

  /* 行业痛点 */
  .pain-section { margin-bottom: 48px; }
  .pain-list { display: flex; flex-direction: column; gap: 10px; }
  .pain-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 16px 20px;
    background: var(--gray-50);
    border-radius: 8px;
    transition: background 0.2s;
  }
  .pain-item:hover { background: var(--gray-100); }
  .pain-num {
    font-size: 17px;
    font-weight: 800;
    color: var(--red);
    flex-shrink: 0;
    min-width: 24px;
    padding-top: 1px;
  }
  .pain-item p {
    font-size: 17px;
    color: var(--gray-700);
    line-height: 1.7;
    margin: 0;
  }

  /* 网站结构 */
  .structure-section { margin-bottom: 48px; }
  .structure-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .structure-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 14px 16px;
    background: var(--gray-50);
    border-radius: 6px;
  }
  .structure-dot {
    width: 6px; height: 6px;
    background: var(--red);
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 8px;
  }
  .structure-item p {
    font-size: 17px;
    color: var(--gray-700);
    line-height: 1.6;
    margin: 0;
  }

  /* 功能模块 */
  .features-section { margin-bottom: 48px; }
  .features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
  .feature-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 24px;
    transition: all 0.2s;
  }
  .feature-card:hover {
    border-color: var(--red);
    box-shadow: 0 4px 16px rgba(230,57,70,0.08);
    transform: translateY(-2px);
  }
  .feature-icon {
    width: 44px; height: 44px;
    background: var(--red-light);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 14px;
    position: relative;
    /* 关键修改：利用 mask 和 背景色继承 currentColor，实现与原型一致的 SVG 效果 */
    background-color: var(--red);
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-position: center;
    -webkit-mask-size: 24px 24px;
    mask-size: 24px 24px;
  }
  
  /* 覆盖原本带有底色和圆角的样式，用外层容器包裹图标底色 */
  .feature-card .feature-icon {
    background-color: var(--red-light); /* 恢复背景色 */
  }
  .feature-card .feature-icon::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--red); /* 图标颜色 */
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-position: center;
    -webkit-mask-size: 24px 24px;
    mask-size: 24px 24px;
  }

  /* ========================================================= */
  /* 高精度 SVG 图标库 (Base64 转码，完美还原原图细节)         */
  /* ========================================================= */

  .feature-icon[data-icon="globe"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpath d='M2 12h20M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpath d='M2 12h20M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z'/%3E%3C/svg%3E");
  }

  .feature-icon[data-icon="zap"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolygon points='13 2 3 14 12 14 11 22 21 10 12 10 13 2'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolygon points='13 2 3 14 12 14 11 22 21 10 12 10 13 2'/%3E%3C/svg%3E");
  }

  .feature-icon[data-icon="robot"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='4' y='8' width='16' height='12' rx='2'/%3E%3Ccircle cx='12' cy='4' r='2'/%3E%3Cpath d='M12 6v2'/%3E%3Cpath d='M9 14h.01M15 14h.01'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='4' y='8' width='16' height='12' rx='2'/%3E%3Ccircle cx='12' cy='4' r='2'/%3E%3Cpath d='M12 6v2'/%3E%3Cpath d='M9 14h.01M15 14h.01'/%3E%3C/svg%3E");
  }

  .feature-icon[data-icon="lock"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='11' width='18' height='11' rx='2'/%3E%3Cpath d='M7 11V7a5 5 0 0 1 10 0v4'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='11' width='18' height='11' rx='2'/%3E%3Cpath d='M7 11V7a5 5 0 0 1 10 0v4'/%3E%3C/svg%3E");
  }

  .feature-icon[data-icon="shield"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z'/%3E%3C/svg%3E");
  }

  .feature-icon[data-icon="chart"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='18' y1='20' x2='18' y2='10'/%3E%3Cline x1='12' y1='20' x2='12' y2='4'/%3E%3Cline x1='6' y1='20' x2='6' y2='14'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='18' y1='20' x2='18' y2='10'/%3E%3Cline x1='12' y1='20' x2='12' y2='4'/%3E%3Cline x1='6' y1='20' x2='6' y2='14'/%3E%3C/svg%3E");
  }

  .feature-icon[data-icon="mobile"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='5' y='2' width='14' height='20' rx='2'/%3E%3Cpath d='M12 18h.01'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='5' y='2' width='14' height='20' rx='2'/%3E%3Cpath d='M12 18h.01'/%3E%3C/svg%3E");
  }

  .feature-icon[data-icon="edit"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7'/%3E%3Cpath d='M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7'/%3E%3Cpath d='M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z'/%3E%3C/svg%3E");
  }

  .feature-icon[data-icon="search"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.35-4.35'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.35-4.35'/%3E%3C/svg%3E");
  }

  .feature-icon[data-icon="doc"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z'/%3E%3Cpolyline points='14 2 14 8 20 8'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z'/%3E%3Cpolyline points='14 2 14 8 20 8'/%3E%3C/svg%3E");
  }

  .feature-icon[data-icon="server"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='2' y='2' width='20' height='8' rx='2'/%3E%3Crect x='2' y='14' width='20' height='8' rx='2'/%3E%3Cline x1='6' y1='6' x2='6.01' y2='6'/%3E%3Cline x1='6' y1='18' x2='6.01' y2='18'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='2' y='2' width='20' height='8' rx='2'/%3E%3Crect x='2' y='14' width='20' height='8' rx='2'/%3E%3Cline x1='6' y1='6' x2='6.01' y2='6'/%3E%3Cline x1='6' y1='18' x2='6.01' y2='18'/%3E%3C/svg%3E");
  }

  .feature-icon[data-icon="user"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 21v-2a4 4 0 0 0-4-4H8a4 4 0 0 0-4 4v2'/%3E%3Ccircle cx='12' cy='7' r='4'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 21v-2a4 4 0 0 0-4-4H8a4 4 0 0 0-4 4v2'/%3E%3Ccircle cx='12' cy='7' r='4'/%3E%3C/svg%3E");
  }

  .feature-icon[data-icon="cart"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='9' cy='21' r='1'/%3E%3Ccircle cx='20' cy='21' r='1'/%3E%3Cpath d='M1 1h4l2.68 13.39a2 2 0 0 0 2 1.61h9.72a2 2 0 0 0 2-1.61L23 6H6'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='9' cy='21' r='1'/%3E%3Ccircle cx='20' cy='21' r='1'/%3E%3Cpath d='M1 1h4l2.68 13.39a2 2 0 0 0 2 1.61h9.72a2 2 0 0 0 2-1.61L23 6H6'/%3E%3C/svg%3E");
  }

  .feature-icon[data-icon="card"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='1' y='4' width='22' height='16' rx='2'/%3E%3Cline x1='1' y1='10' x2='23' y2='10'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='1' y='4' width='22' height='16' rx='2'/%3E%3Cline x1='1' y1='10' x2='23' y2='10'/%3E%3C/svg%3E");
  }

  .feature-icon[data-icon="gear"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3Cpath d='M19.4 15a1.65 1.65 0 0 0 .33 1.82l.06.06a2 2 0 0 1 0 2.83 2 2 0 0 1-2.83 0l-.06-.06a1.65 1.65 0 0 0-1.82-.33 1.65 1.65 0 0 0-1 1.51V21a2 2 0 0 1-2 2 2 2 0 0 1-2-2v-.09A1.65 1.65 0 0 0 9 19.4a1.65 1.65 0 0 0-1.82.33l-.06.06a2 2 0 0 1-2.83 0 2 2 0 0 1 0-2.83l.06-.06a1.65 1.65 0 0 0 .33-1.82 1.65 1.65 0 0 0-1.51-1H3a2 2 0 0 1-2-2 2 2 0 0 1 2-2h.09A1.65 1.65 0 0 0 4.6 9a1.65 1.65 0 0 0-.33-1.82l-.06-.06a2 2 0 0 1 0-2.83 2 2 0 0 1 2.83 0l.06.06a1.65 1.65 0 0 0 1.82.33H9a1.65 1.65 0 0 0 1-1.51V3a2 2 0 0 1 2-2 2 2 0 0 1 2 2v.09a1.65 1.65 0 0 0 1 1.51 1.65 1.65 0 0 0 1.82-.33l.06-.06a2 2 0 0 1 2.83 0 2 2 0 0 1 0 2.83l-.06.06a1.65 1.65 0 0 0-.33 1.82V9a1.65 1.65 0 0 0 1.51 1H21a2 2 0 0 1 2 2 2 2 0 0 1-2 2h-.09a1.65 1.65 0 0 0-1.51 1z'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3Cpath d='M19.4 15a1.65 1.65 0 0 0 .33 1.82l.06.06a2 2 0 0 1 0 2.83 2 2 0 0 1-2.83 0l-.06-.06a1.65 1.65 0 0 0-1.82-.33 1.65 1.65 0 0 0-1 1.51V21a2 2 0 0 1-2 2 2 2 0 0 1-2-2v-.09A1.65 1.65 0 0 0 9 19.4a1.65 1.65 0 0 0-1.82.33l-.06.06a2 2 0 0 1-2.83 0 2 2 0 0 1 0-2.83l.06-.06a1.65 1.65 0 0 0 .33-1.82 1.65 1.65 0 0 0-1.51-1H3a2 2 0 0 1-2-2 2 2 0 0 1 2-2h.09A1.65 1.65 0 0 0 4.6 9a1.65 1.65 0 0 0-.33-1.82l-.06-.06a2 2 0 0 1 0-2.83 2 2 0 0 1 2.83 0l.06.06a1.65 1.65 0 0 0 1.82.33H9a1.65 1.65 0 0 0 1-1.51V3a2 2 0 0 1 2-2 2 2 0 0 1 2 2v.09a1.65 1.65 0 0 0 1 1.51 1.65 1.65 0 0 0 1.82-.33l.06-.06a2 2 0 0 1 2.83 0 2 2 0 0 1 0 2.83l-.06.06a1.65 1.65 0 0 0-.33 1.82V9a1.65 1.65 0 0 0 1.51 1H21a2 2 0 0 1 2 2 2 2 0 0 1-2 2h-.09a1.65 1.65 0 0 0-1.51 1z'/%3E%3C/svg%3E");
  }

  /* factory (工厂/制造) */
  .feature-icon[data-icon="factory"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2 20v-8a2 2 0 0 1 2-2h2V6l5 4h2v4h2V8l5 4h2a2 2 0 0 1 2 2v6H2z'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2 20v-8a2 2 0 0 1 2-2h2V6l5 4h2v4h2V8l5 4h2a2 2 0 0 1 2 2v6H2z'/%3E%3C/svg%3E");
  }

  /* cpu (芯片/技术) */
  .feature-icon[data-icon="cpu"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='4' y='4' width='16' height='16' rx='2'/%3E%3Crect x='9' y='9' width='6' height='6'/%3E%3Cline x1='9' y1='1' x2='9' y2='4'/%3E%3Cline x1='15' y1='1' x2='15' y2='4'/%3E%3Cline x1='9' y1='20' x2='9' y2='23'/%3E%3Cline x1='15' y1='20' x2='15' y2='23'/%3E%3Cline x1='20' y1='9' x2='23' y2='9'/%3E%3Cline x1='20' y1='14' x2='23' y2='14'/%3E%3Cline x1='1' y1='9' x2='4' y2='9'/%3E%3Cline x1='1' y1='14' x2='4' y2='14'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='4' y='4' width='16' height='16' rx='2'/%3E%3Crect x='9' y='9' width='6' height='6'/%3E%3Cline x1='9' y1='1' x2='9' y2='4'/%3E%3Cline x1='15' y1='1' x2='15' y2='4'/%3E%3Cline x1='9' y1='20' x2='9' y2='23'/%3E%3Cline x1='15' y1='20' x2='15' y2='23'/%3E%3Cline x1='20' y1='9' x2='23' y2='9'/%3E%3Cline x1='20' y1='14' x2='23' y2='14'/%3E%3Cline x1='1' y1='9' x2='4' y2='9'/%3E%3Cline x1='1' y1='14' x2='4' y2='14'/%3E%3C/svg%3E");
  }

  /* book (书籍/知识/案例) */
  .feature-icon[data-icon="book"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 19.5A2.5 2.5 0 0 1 6.5 17H20V3H6.5A2.5 2.5 0 0 0 4 5.5v14z'/%3E%3Cpath d='M4 19.5A2.5 2.5 0 0 0 6.5 22H20v-5H6.5a2.5 2.5 0 0 1-2.5-2.5z'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 19.5A2.5 2.5 0 0 1 6.5 17H20V3H6.5A2.5 2.5 0 0 0 4 5.5v14z'/%3E%3Cpath d='M4 19.5A2.5 2.5 0 0 0 6.5 22H20v-5H6.5a2.5 2.5 0 0 1-2.5-2.5z'/%3E%3C/svg%3E");
  }

  /* heart (喜爱/核心/关怀) */
  .feature-icon[data-icon="heart"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20.84 4.61a5.5 5.5 0 0 0-7.78 0L12 5.67l-1.06-1.06a5.5 5.5 0 0 0-7.78 7.78l1.06 1.06L12 21.23l7.78-7.78 1.06-1.06a5.5 5.5 0 0 0 0-7.78z'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20.84 4.61a5.5 5.5 0 0 0-7.78 0L12 5.67l-1.06-1.06a5.5 5.5 0 0 0-7.78 7.78l1.06 1.06L12 21.23l7.78-7.78 1.06-1.06a5.5 5.5 0 0 0 0-7.78z'/%3E%3C/svg%3E");
  }

  /* wine (酒杯/品鉴/高端 - 极简) */
  .feature-icon[data-icon="wine"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M8 22h8'/%3E%3Cpath d='M12 15v7'/%3E%3Cpath d='M12 15a5 5 0 0 1-5-5V4h10v6a5 5 0 0 1-5 5z'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M8 22h8'/%3E%3Cpath d='M12 15v7'/%3E%3Cpath d='M12 15a5 5 0 0 1-5-5V4h10v6a5 5 0 0 1-5 5z'/%3E%3C/svg%3E");
  }

  /* sparkle (闪耀/亮点/增长) */
  .feature-icon[data-icon="sparkle"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 2v4'/%3E%3Cpath d='M12 18v4'/%3E%3Cpath d='M4.93 4.93l2.83 2.83'/%3E%3Cpath d='M16.24 16.24l2.83 2.83'/%3E%3Cpath d='M2 12h4'/%3E%3Cpath d='M18 12h4'/%3E%3Cpath d='M4.93 19.07l2.83-2.83'/%3E%3Cpath d='M16.24 7.76l2.83-2.83'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 2v4'/%3E%3Cpath d='M12 18v4'/%3E%3Cpath d='M4.93 4.93l2.83 2.83'/%3E%3Cpath d='M16.24 16.24l2.83 2.83'/%3E%3Cpath d='M2 12h4'/%3E%3Cpath d='M18 12h4'/%3E%3Cpath d='M4.93 19.07l2.83-2.83'/%3E%3Cpath d='M16.24 7.76l2.83-2.83'/%3E%3C/svg%3E");
  }

  /* flask (实验/测试/数据) */
  .feature-icon[data-icon="flask"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 2v2'/%3E%3Cpath d='M15 2v2'/%3E%3Cpath d='M12 2v6l-4 8a4 4 0 0 0 3.2 6.4A4 4 0 0 0 16 16l-4-8V2'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 2v2'/%3E%3Cpath d='M15 2v2'/%3E%3Cpath d='M12 2v6l-4 8a4 4 0 0 0 3.2 6.4A4 4 0 0 0 16 16l-4-8V2'/%3E%3C/svg%3E");
  }

  /* chat (沟通/客服/咨询) */
  .feature-icon[data-icon="chat"]::before {
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 11.5a8.38 8.38 0 0 1-.9 3.8 8.5 8.5 0 0 1-7.6 4.7 8.38 8.38 0 0 1-3.8-.9L3 21l1.9-5.7a8.38 8.38 0 0 1-.9-3.8 8.5 8.5 0 0 1 4.7-7.6 8.38 8.38 0 0 1 3.8-.9h.5a8.48 8.48 0 0 1 8 8v.5z'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 11.5a8.38 8.38 0 0 1-.9 3.8 8.5 8.5 0 0 1-7.6 4.7 8.38 8.38 0 0 1-3.8-.9L3 21l1.9-5.7a8.38 8.38 0 0 1-.9-3.8 8.5 8.5 0 0 1 4.7-7.6 8.38 8.38 0 0 1 3.8-.9h.5a8.48 8.48 0 0 1 8 8v.5z'/%3E%3C/svg%3E");
  }

  /* 其他复杂 SVG 此处省略展示，请根据 main.js 中的键名补充对应的 Mask (如: factory, cpu, book, heart, wine, sparkle, flask, chat) */

  /* ========================================================= */

  .feature-card h4 {
    font-size: 17px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 6px;
  }
  .feature-card p {
    font-size: 15px;
    color: var(--gray-500);
    line-height: 1.6;
  }

  /* 服务 */
  .services-section { margin-bottom: 48px; }
  .services-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .service-item {
    display: flex;
    align-items: center;
    gap: 17px;
    padding: 12px 16px;
    background: var(--gray-50);
    border-radius: 6px;
    font-size: 17px;
    color: var(--gray-700);
  }
  .service-check {
    width: 18px; height: 18px;
    background: var(--red);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    color: white;
    font-size: 11px;
    font-weight: 700;
  }

  /* 典型案例 */
  .case-showcase { margin-bottom: 48px; }
  .showcase-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  .showcase-item {
    border-radius: 10px;
    overflow: hidden;
    background: var(--white);
    border: 1px solid var(--border);
    transition: all 0.3s;
    cursor: pointer;
  }
  .showcase-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.1);
    border-color: transparent;
  }
  .showcase-img {
    aspect-ratio: 16/10;
    background: var(--gray-100);
    overflow: hidden;
  }
  .showcase-img img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
  }
  .showcase-item:hover .showcase-img img { transform: scale(1.03); }
  .showcase-label { padding: 16px; }
  .showcase-label h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 4px;
  }
  .showcase-label span {
    font-size: 13px;
    color: var(--gray-400);
  }

  /* 更多相关案例 */
  .related-cases { margin-bottom: 24px; }
  .related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
  .related-card {
    border-radius: 8px;
    overflow: hidden;
    background: var(--white);
    border: 1px solid var(--border);
    transition: all 0.2s;
    cursor: pointer;
  }
  .related-card:hover {
    border-color: var(--red);
    box-shadow: 0 4px 16px rgba(230,57,70,0.08);
  }
  .related-img {
    aspect-ratio: 16/10;
    background: var(--gray-100);
    overflow: hidden;
  }
  .related-img img {
    width: 100%; height: 100%;
    object-fit: cover;
  }
  .related-body { padding: 14px 16px; }
  .related-tag {
    display: inline-block;
    font-size: 11px;
    padding: 2px 10px;
    background: var(--red-light);
    color: var(--red);
    border-radius: 100px;
    margin-bottom: 8px;
    font-weight: 500;
  }
  .related-body h4 {
    font-size: 17px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 4px;
  }
  .related-body p {
    font-size: 14px;
    color: var(--gray-400);
  }

  /* ===== CTA ===== */
  .footer-callout {
    background: linear-gradient(135deg, #2A0A0A 0%, #1A0505 100%);
    padding: 56px 0;
  }
  .footer-callout .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
  }
  .footer-callout h2 {
    font-size: 28px;
    font-weight: 800;
    color: white;
    margin-bottom: 8px;
  }
  .footer-callout p {
    color: #999;
    font-size: 15px;
  }


  /* ===== Responsive ===== */
  @media (max-width: 1024px) {
    .sol-layout { grid-template-columns: 1fr; gap: 32px; }
    .sol-sidebar { position: static; }
    .sol-list { display: flex; overflow-x: auto; gap: 8px; padding-bottom: 8px; -webkit-overflow-scrolling: touch; }
    .sol-item { border-left: none; border-bottom: 2px solid var(--gray-200); min-width: 140px; flex-shrink: 0; }
    .sol-item.active { border-bottom-color: var(--red); background: #FEF2F3; }
    .showcase-grid, .related-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .nav nav { gap: 20px; }
  }
  @media (max-width: 768px) {
    .page-hero h1 { font-size: 36px; }
    .metric-band .wrap { grid-template-columns: repeat(2, 1fr); gap: 24px 0; }
    .metric { border-right: none; }
    .showcase-grid, .related-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: repeat(2, 1fr);
        gap: 8px; }
    .structure-grid, .services-list { grid-template-columns: 1fr; }
    .footer-callout .wrap { flex-direction: column; text-align: center; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .nav nav { display: none; }
    .nav-phone { display: none; }
    .wrap { padding: 0 20px; }
    .sol-list{
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 10px;
    }
  }
/* ===== Lightbox ===== */
.lb-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.88);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: lbFadeIn 0.2s ease;
}
@keyframes lbFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.lb-stage {
    max-width: 85vw;
    max-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.lb-img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
    animation: lbZoomIn 0.25s ease;
}
@keyframes lbZoomIn {
    from { transform: scale(0.85); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}
.lb-close {
    position: absolute;
    top: 16px;
    right: 24px;
    color: #fff;
    font-size: 36px;
    line-height: 1;
    width: 44px;
    height: 44px;
    text-align: center;
    cursor: pointer;
    z-index: 10;
    opacity: 0.85;
    transition: opacity 0.2s, transform 0.2s;
}
.lb-close:hover { opacity: 1; transform: scale(1.15); }
.lb-prev, .lb-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: #fff;
    font-size: 48px;
    width: 60px;
    height: 60px;
    line-height: 60px;
    text-align: center;
    cursor: pointer;
    z-index: 10;
    opacity: 0.7;
    user-select: none;
    border-radius: 50%;
    transition: background 0.2s, opacity 0.2s;
}
.lb-prev { left: 78px; }
.lb-next { right: 78px; }
.lb-prev:hover, .lb-next:hover {
    opacity: 1;
    background: rgba(255,255,255,0.1);
}
.lb-counter {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255,255,255,0.85);
    font-size: 14px;
    padding: 6px 16px;
    background: rgba(255,255,255,0.1);
    border-radius: 20px;
    z-index: 10;
}