:root {
      --main: #b45309;
      --accent: #ca8a04;
      --bg: #fefce8;
      --text: #451a03;
      --white: #fffaf0;
      --shadow: 0 12px 30px rgba(180, 83, 9, 0.15);
      --shadow-lg: 0 20px 40px rgba(180, 83, 9, 0.25);
    }

    body {
      background-color: var(--bg);
      color: var(--text);
      font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
      font-weight: 400;
      font-size: 0.95rem;
      line-height: 1.6;
      letter-spacing: 0.01em;
    }

    /* 拟物厚重感: 渐变高光+投影 */
    .solid-card {
      background: linear-gradient(145deg, #fffbf0 0%, #fdf3d7 100%);
      box-shadow: var(--shadow), inset 0 1px 4px rgba(255, 255, 255, 0.8), inset 0 -2px 4px rgba(180, 83, 9, 0.1);
      border: 1px solid rgba(180, 83, 9, 0.25);
      border-radius: 18px;
    }

    .btn-special {
      background: linear-gradient(135deg, var(--main) 0%, var(--accent) 100%);
      color: white;
      border: none;
      box-shadow: 0 8px 16px rgba(180, 83, 9, 0.35), inset 0 2px 4px rgba(255, 255, 255, 0.4);
      font-weight: 600;
      position: relative;
      overflow: hidden;
      transition: all 0.2s ease;
    }
    .btn-special::after {
      content: "";
      position: absolute;
      top: 0;
      left: -80%;
      width: 40%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
      transform: skewX(-20deg);
      transition: left 0.5s;
    }
    .btn-special:hover {
      background: linear-gradient(135deg, var(--accent) 0%, var(--main) 100%);
      box-shadow: 0 12px 24px rgba(180, 83, 9, 0.45);
      color: #fff;
    }
    .btn-special:hover::after {
      left: 120%;
    }

    .navbar-brand {
      font-weight: 800;
      font-size: 1.9rem;
      color: var(--main) !important;
      text-shadow: 2px 2px 0 rgba(202, 138, 4, 0.15);
      letter-spacing: -0.5px;
    }
    .navbar-brand i {
      margin-right: 8px;
      color: var(--accent);
    }

    .nav-link {
      color: var(--text) !important;
      font-weight: 600;
      margin: 0 0.3rem;
    }
    .nav-link:hover {
      color: var(--main) !important;
    }

    .hero-title {
      font-weight: 900;
      font-size: calc(2.2rem + 1.5vw);
      line-height: 1.2;
      color: var(--text);
      text-shadow: 2px 2px 0 rgba(202, 138, 4, 0.15);
    }

    .section-title {
      font-weight: 800;
      color: var(--text);
      border-left: 6px solid var(--accent);
      padding-left: 1rem;
      margin-bottom: 1.5rem;
    }

    .comparison-table th {
      background: var(--main);
      color: #fff;
      font-weight: 600;
      border-bottom: 3px solid var(--accent);
    }
    .comparison-table td {
      background: rgba(255, 255, 255, 0.75);
      border: 1px solid #ecd9b0;
    }

    .list-num {
      background: var(--accent);
      color: white;
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      margin-right: 12px;
      box-shadow: 0 4px 8px rgba(180, 83, 9, 0.2);
    }

    .faq-item {
      background: #fffdf5;
      border: 1px solid rgba(180, 83, 9, 0.2);
      border-radius: 14px;
      margin-bottom: 1rem;
      box-shadow: 0 4px 8px rgba(0,0,0,0.02);
    }
    .faq-item summary {
      font-weight: 700;
      padding: 0.9rem 1rem;
      list-style: none;
      cursor: pointer;
      color: var(--text);
      background: linear-gradient(to right, #fdf3d7, transparent);
      border-radius: 14px;
    }
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-item p {
      padding: 0 1rem 1rem 1rem;
      margin: 0;
      color: #5e2e0e;
    }

    #backTop {
      display: none;
      position: fixed;
      bottom: 2rem;
      right: 1.8rem;
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: var(--main);
      color: white;
      border: none;
      box-shadow: 0 6px 16px rgba(180, 83, 9, 0.4);
      z-index: 999;
      font-size: 1.4rem;
    }
    #backTop.show {
      display: block;
    }

    .img-placeholder {
      background: linear-gradient(145deg, #eedbb8, #dbbd88);
      border-radius: 8px;
      height: 100%;
      min-height: 100px;
      box-shadow: inset 0 4px 10px rgba(255,255,255,0.5), 0 6px 14px rgba(180,83,9,0.1);
    }

    .footer-links a {
      color: var(--text);
      text-decoration: none;
      font-weight: 500;
      margin-right: 1rem;
    }
    .footer-links a:hover {
      color: var(--main);
      text-decoration: underline;
    }

    /* 紧凑排版 */
    .compact p, .compact li {
      font-size: 0.9rem;
    }
    h2, h3 {
      letter-spacing: -0.02em;
    }
    .text-muted-custom {
      color: #6b4a21;
    }

    /* 图片懒加载渐显 */
    .lazy-img {
      opacity: 0;
      transition: opacity 0.4s ease-in-out;
    }
    .lazy-img.loaded {
      opacity: 1;
    }
    .lazy-placeholder {
      background: #ebd6ae;
      height: 100%;
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #b45309;
      font-weight: 600;
    }

/* --- 子页面追加 --- */
/* 本页专属微调，保持整体风格 */
    .about-hero {
      padding: 4rem 0 3rem;
      background: linear-gradient(135deg, rgba(180, 83, 9, 0.08) 0%, rgba(202, 138, 4, 0.06) 100%);
      border-bottom: 2px solid rgba(180, 83, 9, 0.15);
    }
.about-hero h1 {
      font-weight: 900;
      font-size: 2.4rem;
      letter-spacing: -0.02em;
    }
.about-hero .lead {
      max-width: 720px;
      margin: 1rem auto 0;
      color: var(--text);
      opacity: 0.85;
      font-weight: 400;
    }
.about-section {
      padding: 3.5rem 0;
    }
.about-section + .about-section {
      border-top: 1px dashed rgba(180, 83, 9, 0.25);
    }
.about-section h2 {
      font-weight: 800;
      font-size: 1.6rem;
      margin-bottom: 1.5rem;
      color: var(--main);
      position: relative;
      padding-bottom: 0.6rem;
    }
.about-section h2::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 56px;
      height: 3px;
      background: var(--accent);
      border-radius: 3px;
    }
.about-section p, .about-section li {
      font-size: 1.02rem;
      line-height: 1.8;
      color: var(--text);
      opacity: 0.92;
    }
.about-section ul, .about-section ol {
      padding-left: 1.2rem;
    }
.about-section li {
      margin-bottom: 0.5rem;
    }
.feature-grid .solid-card {
      height: 100%;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      padding: 1.8rem 1.5rem;
    }
.feature-grid .solid-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }
.feature-grid .solid-card i {
      font-size: 1.8rem;
      color: var(--accent);
      margin-bottom: 1rem;
    }
.feature-grid .solid-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 0.6rem;
      color: var(--main);
    }
.feature-grid .solid-card p {
      font-size: 0.95rem;
      line-height: 1.6;
      margin-bottom: 0;
    }
.about-badge {
      display: inline-block;
      background: var(--accent);
      color: var(--white);
      font-weight: 600;
      font-size: 0.8rem;
      padding: 0.25rem 0.8rem;
      border-radius: 20px;
      margin-bottom: 1rem;
      letter-spacing: 0.03em;
    }
.contact-box {
      background: var(--white);
      border: 2px solid rgba(180, 83, 9, 0.15);
      border-radius: 12px;
      padding: 1.5rem;
      margin-top: 1rem;
    }
.contact-box a {
      color: var(--main);
      font-weight: 600;
      text-decoration: underline;
      text-underline-offset: 3px;
    }
.about-hero h1 { font-size: 1.8rem; }
.about-section h2 { font-size: 1.3rem; }

/* --- 子页面追加 --- */
.privacy-hero { background: linear-gradient(135deg, var(--bg), #fef3c7); padding: 4rem 0 3rem; }
.privacy-hero .hero-title { color: var(--main); font-weight: 800; }
.privacy-section { padding: 2.5rem 0; border-bottom: 1px solid rgba(180, 83, 9, 0.1); }
.privacy-section:last-child { border-bottom: none; }
.privacy-section h2 { color: var(--main); font-weight: 700; margin-bottom: 1.2rem; font-size: 1.5rem; }
.privacy-section h3 { color: var(--text); font-weight: 600; margin-bottom: 0.8rem; font-size: 1.15rem; }
.privacy-section p, .privacy-section li { color: var(--text); line-height: 1.8; }
.privacy-section ul { padding-left: 1.2rem; }
.privacy-section li { margin-bottom: 0.5rem; }
.privacy-badge { background: var(--white); border: 1px solid rgba(180, 83, 9, 0.2); border-radius: 8px; padding: 0.8rem 1rem; margin-bottom: 1rem; display: flex; align-items: center; gap: 0.75rem; }
.privacy-badge i { color: var(--accent); font-size: 1.2rem; }
.last-updated { color: var(--accent); font-size: 0.9rem; font-weight: 500; }
.highlight-box { background: var(--white); border-left: 4px solid var(--accent); padding: 1.2rem 1.5rem; border-radius: 0 8px 8px 0; margin: 1.5rem 0; }
.highlight-box p { margin-bottom: 0; }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.table { color:#451a03 !important; border-color:rgba(0,0,0,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#451a03 !important; }