:root {
    --color-primary: #3D5A40;
    --color-primary-dark: #2E3B2F;
    --color-accent: #C67B4E;
    --color-bg: #FAF8F4;
    --color-surface: #F3EFE7;
    --color-text: #2B2B26;
    --color-text-secondary: #6B6B60;
    --color-text-weak: #9C9C8E;
    --color-border: #E4DFD3;
    --radius-card: 16px;
    --radius-btn: 8px;
    --shadow-card: 0 1px 3px rgba(0,0,0,0.04), 0 4px 16px rgba(0,0,0,0.04);
    --shadow-hover: 0 4px 12px rgba(0,0,0,0.06), 0 12px 30px rgba(0,0,0,0.08);
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: system-ui, -apple-system, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }
  a { color: inherit; text-decoration: none; }
  img { max-width: 100%; display: block; }
  .container-custom {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
  }
  @media (max-width: 767px) {
    .container-custom { padding: 0 16px; }
  }
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(250, 248, 244, 0.86);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  }
  .site-header.scrolled {
    background: rgba(250, 248, 244, 0.97);
    border-bottom-color: var(--color-border);
    box-shadow: 0 2px 12px rgba(0,0,0,0.05);
  }
  .nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: 6px 4px;
    position: relative;
    transition: color 0.2s ease;
  }
  .nav-link:hover { color: var(--color-primary); }
  .nav-link.active {
    color: var(--color-primary);
    font-weight: 600;
  }
  .nav-link.active::after {
    content: '';
    position: absolute;
    left: 0; right: 0;
    bottom: -2px;
    height: 2px;
    background: var(--color-accent);
    border-radius: 999px;
  }
  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--color-accent);
    color: #fff;
    font-weight: 600;
    font-size: 14px;
    padding: 10px 24px;
    border-radius: var(--radius-btn);
    border: 1px solid transparent;
    transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    cursor: pointer;
  }
  .btn-primary:hover {
    background: #b86a3e;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(198, 123, 78, 0.25);
  }
  .btn-primary:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
  }
  .btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: transparent;
    color: var(--color-primary);
    border: 1.5px solid var(--color-primary);
    font-weight: 600;
    font-size: 14px;
    padding: 10px 24px;
    border-radius: var(--radius-btn);
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
    cursor: pointer;
  }
  .btn-outline:hover {
    background: rgba(61, 90, 64, 0.06);
    transform: translateY(-1px);
  }
  .btn-outline:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
  }
  .btn-white-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: transparent;
    color: #FAF8F4;
    border: 1.5px solid rgba(250, 248, 244, 0.7);
    font-weight: 600;
    font-size: 14px;
    padding: 10px 24px;
    border-radius: var(--radius-btn);
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
    cursor: pointer;
  }
  .btn-white-outline:hover {
    background: rgba(250, 248, 244, 0.1);
    border-color: #fff;
    transform: translateY(-1px);
  }
  .badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: rgba(61, 90, 64, 0.1);
    color: var(--color-primary);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
    white-space: nowrap;
  }
  .badge-accent {
    background: rgba(198, 123, 78, 0.12);
    color: #b46a40;
  }
  .search-input {
    height: 40px;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    background: #fff;
    padding: 0 16px 0 36px;
    font-size: 14px;
    color: var(--color-text);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    width: 200px;
  }
  .search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(61, 90, 64, 0.12);
  }
  .search-wrap {
    position: relative;
    display: inline-flex;
    align-items: center;
  }
  .search-wrap .icon-search {
    position: absolute;
    left: 12px;
    pointer-events: none;
    color: var(--color-text-weak);
  }
  .card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
  }
  .card:hover {
    box-shadow: var(--shadow-hover);
  }
  .section-title {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: -0.02em;
    color: var(--color-text);
  }
  .section-subtitle {
    font-size: 15px;
    color: var(--color-text-secondary);
    margin-top: 12px;
    max-width: 640px;
    line-height: 1.8;
  }
  @media (max-width: 767px) {
    .section-title { font-size: 24px; }
  }
  .stat-num {
    font-size: 40px;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1.2;
  }
  @media (max-width: 767px) {
    .stat-num { font-size: 30px; }
  }
  .hero-overlay {
    background: linear-gradient(100deg, rgba(35, 45, 38, 0.92) 0%, rgba(35, 45, 38, 0.72) 45%, rgba(35, 45, 38, 0.35) 100%);
  }
  .pain-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    padding: 24px 22px;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
  }
  .pain-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
  }
  .pain-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(61, 90, 64, 0.1);
    color: var(--color-primary);
  }
  .timeline-item {
    position: relative;
    padding-left: 56px;
  }
  .timeline-item::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 6px;
    bottom: -30px;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-primary), rgba(61, 90, 64, 0.1));
  }
  .timeline-item:last-child::before { display: none; }
  .timeline-dot {
    position: absolute;
    left: 14px;
    top: 4px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-accent);
    border: 3px solid var(--color-bg);
    box-shadow: 0 0 0 2px rgba(198, 123, 78, 0.3);
  }
  .news-item {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    padding: 16px;
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
    display: flex;
    gap: 18px;
  }
  .news-item:hover {
    box-shadow: var(--shadow-hover);
    border-color: rgba(61, 90, 64, 0.3);
  }
  .news-thumb {
    width: 140px;
    flex-shrink: 0;
    border-radius: 10px;
    overflow: hidden;
    background: var(--color-surface);
  }
  .news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
  }
  .news-item:hover .news-thumb img { transform: scale(1.03); }
  @media (max-width: 640px) {
    .news-item { flex-direction: column; }
    .news-thumb { width: 100%; height: 140px; }
  }
  .testimonial-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 18px;
    padding: 28px 26px;
    box-shadow: var(--shadow-card);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
  }
  .testimonial-card:hover {
    box-shadow: var(--shadow-hover);
  }
  .faq-item {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color 0.3s ease;
  }
  .faq-item[open] {
    border-color: rgba(61, 90, 64, 0.35);
  }
  .faq-item summary {
    cursor: pointer;
    padding: 18px 22px;
    font-weight: 600;
    font-size: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    list-style: none;
    color: var(--color-text);
  }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item summary::after {
    content: '+';
    font-size: 26px;
    font-weight: 400;
    color: var(--color-accent);
    line-height: 1;
    transition: transform 0.3s ease;
    flex-shrink: 0;
  }
  .faq-item[open] summary::after {
    transform: rotate(45deg);
  }
  .faq-answer {
    padding: 0 22px 20px;
    color: var(--color-text-secondary);
    font-size: 14px;
    line-height: 1.8;
  }
  .footer-link {
    color: rgba(250, 248, 244, 0.72);
    font-size: 14px;
    transition: color 0.2s ease;
  }
  .footer-link:hover { color: #fff; }
  .footer-social {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: rgba(250, 248, 244, 0.8);
    transition: background 0.2s ease, color 0.2s ease;
  }
  .footer-social:hover {
    background: var(--color-accent);
    color: #fff;
  }
  .hero-stat-item {
    text-align: center;
    padding: 0 20px;
    border-left: 1px solid rgba(255, 255, 255, 0.2);
  }
  .hero-stat-item:first-child { border-left: none; }
  @media (max-width: 767px) {
    .hero-stat-item { padding: 0 10px; }
  }
  .mobile-menu {
    display: none;
    background: #fff;
    border-radius: 0 0 16px 16px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    max-height: 80vh;
    overflow-y: auto;
  }
  @media (max-width: 767px) {
    .mobile-menu.open { display: block; }
  }
  .texture-bg {
    position: relative;
    overflow: hidden;
  }
  .texture-bg::before {
    content: '';
    position: absolute;
    top: -40px; right: -40px;
    width: 260px; height: 260px;
    border-radius: 50%;
    background: rgba(198, 123, 78, 0.08);
    pointer-events: none;
  }
  .texture-bg::after {
    content: '';
    position: absolute;
    bottom: -60px; left: -30px;
    width: 200px; height: 200px;
    border-radius: 50%;
    background: rgba(61, 90, 64, 0.06);
    pointer-events: none;
  }
  .cta-texture {
    position: relative;
  }
  .cta-texture::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 80% 30%, rgba(198, 123, 78, 0.18) 0%, transparent 50%),
                radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.04) 0%, transparent 40%);
    pointer-events: none;
  }
  .star-rating {
    color: #E8A33C;
    letter-spacing: 1px;
  }

/* ===== 设计变量 ===== */
  :root {
    --color-primary: #3D5A40;
    --color-primary-dark: #2E3B2F;
    --color-accent: #C67B4E;
    --color-accent-dark: #B06A42;
    --color-bg: #FAF8F4;
    --color-surface: #FFFFFF;
    --color-surface-muted: #F3EFE7;
    --color-text: #2B2B26;
    --color-text-secondary: #6B6B60;
    --color-text-muted: #9C9C8E;
    --color-border: #E4DFD3;
    --radius-card: 14px;
    --shadow-card: 0 1px 3px rgba(0,0,0,0.04), 0 4px 16px rgba(0,0,0,0.04);
    --shadow-card-hover: 0 4px 12px rgba(0,0,0,0.06), 0 12px 30px rgba(0,0,0,0.08);
  }

  /* ===== 基础重置 ===== */
  * { margin: 0; padding: 0; box-sizing: border-box; }

  body {
    font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }

  img { max-width: 100%; display: block; }
  a { text-decoration: none; color: inherit; }
  button, input, select, textarea { font: inherit; }

  ::selection {
    background: rgba(61, 90, 64, 0.18);
    color: var(--color-primary-dark);
  }

  .container-custom {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 24px;
  }

  @media (max-width: 640px) {
    .container-custom { padding: 0 16px; }
  }

  /* ===== 导航 ===== */
  .site-header {
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 1px 4px rgba(43, 43, 38, 0.03);
    position: sticky;
    top: 0;
    z-index: 100;
  }

  .nav-link {
    position: relative;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: 6px 2px;
    transition: color 0.3s ease;
    white-space: nowrap;
  }

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

  .nav-link.active {
    color: var(--color-primary);
    font-weight: 600;
  }

  .nav-link.active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -3px;
    height: 2px;
    border-radius: 2px;
    background: var(--color-accent);
  }

  .search-wrap {
    position: relative;
    display: flex;
    align-items: center;
  }

  .search-wrap .icon-search {
    position: absolute;
    left: 14px;
    color: var(--color-text-muted);
    pointer-events: none;
  }

  .search-input {
    width: 200px;
    height: 40px;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    padding: 0 16px 0 40px;
    font-size: 13px;
    color: var(--color-text);
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
  }

  .search-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(61, 90, 64, 0.12);
  }

  .search-input::placeholder { color: var(--color-text-muted); }

  /* 移动端菜单 */
  .mobile-menu {
    display: none;
    background: #fff;
  }

  .mobile-menu.open {
    display: block;
    animation: menuFade 0.25s ease;
  }

  @keyframes menuFade {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
  }

  /* ===== 按钮 ===== */
  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: var(--color-accent);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    border-radius: 8px;
    padding: 10px 20px;
    transition: background 0.3s ease, transform 0.2s ease, box-shadow 0.3s;
    border: none;
    cursor: pointer;
    white-space: nowrap;
  }

  .btn-primary:hover {
    background: var(--color-accent-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(198, 123, 78, 0.25);
  }

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

  .btn-primary:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
  }

  .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: transparent;
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 600;
    border: 1px solid var(--color-primary);
    border-radius: 8px;
    padding: 10px 20px;
    transition: background 0.3s ease, transform 0.2s ease;
    cursor: pointer;
  }

  .btn-secondary:hover {
    background: rgba(61, 90, 64, 0.08);
    transform: translateY(-1px);
  }

  .btn-secondary:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
  }

  .btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: transparent;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.65);
    border-radius: 8px;
    padding: 10px 20px;
    transition: border-color 0.3s ease, background 0.3s ease, transform 0.2s ease;
    cursor: pointer;
  }

  .btn-ghost:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
  }

  .btn-ghost:focus {
    outline: 2px solid rgba(255, 255, 255, 0.7);
    outline-offset: 2px;
  }

  .btn-lg {
    padding: 13px 28px;
    font-size: 16px;
    border-radius: 10px;
  }

  /* ===== 徽章 / 标签 ===== */
  .badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(61, 90, 64, 0.1);
    color: var(--color-primary);
    white-space: nowrap;
  }

  .badge-accent {
    background: rgba(198, 123, 78, 0.12);
    color: var(--color-accent);
  }

  .tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    color: var(--color-accent);
    background: rgba(198, 123, 78, 0.1);
    border-radius: 999px;
    padding: 3px 10px;
  }

  /* ===== 文章页头 ===== */
  .article-hero {
    position: relative;
    background: linear-gradient(120deg, #F3EFE7 0%, #FAF8F4 45%, #F1ECDF 100%);
    border-bottom: 1px solid var(--color-border);
    padding: 44px 0 42px;
    overflow: hidden;
  }

  .article-hero::after {
    content: '';
    position: absolute;
    top: -70px;
    right: -40px;
    width: 240px;
    height: 240px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(198, 123, 78, 0.08), transparent 70%);
    pointer-events: none;
  }

  .breadcrumb {
    position: relative;
    z-index: 1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 20px;
  }

  .breadcrumb a {
    color: var(--color-text-muted);
    transition: color 0.3s;
  }

  .breadcrumb a:hover { color: var(--color-accent); }

  .breadcrumb .sep { color: #C9C4BA; }

  .breadcrumb .current {
    color: var(--color-primary);
    font-weight: 500;
    max-width: 360px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .article-heading {
    position: relative;
    z-index: 1;
  }

  .article-heading h1 {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.3;
    color: var(--color-text);
    max-width: 800px;
    margin-bottom: 18px;
    letter-spacing: -0.01em;
  }

  .article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    font-size: 14px;
    color: var(--color-text-secondary);
  }

  .meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .meta-item svg { color: var(--color-accent); }

  @media (max-width: 767px) {
    .article-hero { padding: 30px 0 28px; }
    .article-heading h1 { font-size: 28px; }
    .article-meta { gap: 10px; font-size: 13px; }
    .breadcrumb .current { max-width: 260px; }
  }

  /* ===== 文章正文区 ===== */
  .article-main {
    background: #fff;
    padding: 48px 0 80px;
  }

  .article-content-wrap {
    max-width: 740px;
    margin: 0 auto;
  }

  .article-content {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text);
    word-break: break-word;
  }

  .article-content > *:first-child { margin-top: 0; }

  .article-content p { margin: 0 0 1.4em; }

  .article-content h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin: 2em 0 0.8em;
    padding-bottom: 14px;
    border-bottom: 2px solid var(--color-surface-muted);
    position: relative;
  }

  .article-content h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 48px;
    height: 2px;
    border-radius: 2px;
    background: var(--color-accent);
  }

  .article-content h3 {
    font-size: 19px;
    font-weight: 600;
    color: var(--color-primary);
    margin: 1.8em 0 0.8em;
  }

  .article-content h4 {
    font-size: 17px;
    font-weight: 600;
    margin: 1.5em 0 0.6em;
  }

  .article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 1.5em auto;
    display: block;
    border: 1px solid var(--color-border);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  }

  .article-content img + em {
    display: block;
    text-align: center;
    font-size: 13px;
    font-style: normal;
    color: var(--color-text-muted);
    margin: -0.8em 0 1.5em;
  }

  .article-content blockquote {
    border-left: 4px solid var(--color-primary);
    background: var(--color-surface-muted);
    padding: 16px 20px;
    border-radius: 0 10px 10px 0;
    margin: 1.6em 0;
    color: #5A5A52;
  }

  .article-content blockquote p { margin: 0 0 0.5em; }
  .article-content blockquote p:last-child { margin: 0; }

  .article-content ul,
  .article-content ol {
    margin: 0 0 1.5em;
    padding-left: 1.4em;
  }

  .article-content ul li {
    padding-left: 8px;
    margin-bottom: 8px;
  }

  .article-content ul li::marker { color: var(--color-accent); }

  .article-content ol li {
    padding-left: 4px;
    margin-bottom: 8px;
  }

  .article-content ol li::marker {
    color: var(--color-primary);
    font-weight: 600;
  }

  .article-content a {
    color: var(--color-accent);
    text-decoration: none;
    border-bottom: 1px solid rgba(198, 123, 78, 0.4);
    transition: border-color 0.3s;
  }

  .article-content a:hover { border-bottom-color: var(--color-accent); }

  .article-content table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    overflow: hidden;
    margin: 1.5em 0;
    font-size: 14px;
  }

  .article-content table th {
    background: rgba(61, 90, 64, 0.08);
    font-weight: 600;
    padding: 12px 16px;
    text-align: left;
    white-space: nowrap;
  }

  .article-content table td {
    padding: 11px 16px;
    border-top: 1px solid var(--color-border);
    vertical-align: top;
  }

  .article-content hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 2em 0;
  }

  .article-content iframe {
    max-width: 100%;
    border-radius: 10px;
    margin: 1.5em 0;
  }

  @media (max-width: 767px) {
    .article-main { padding: 32px 0 48px; }
    .article-content { font-size: 15px; }
    .article-content h2 { font-size: 21px; }
  }

  /* ===== 内容未找到 ===== */
  .not-found-box {
    text-align: center;
    padding: 48px 24px;
    border: 1px dashed var(--color-border);
    border-radius: 14px;
    background: var(--color-bg);
  }

  .not-found-box p {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 20px;
  }

  /* ===== 相关推荐 ===== */
  .related-section {
    background: var(--color-surface-muted);
    padding: 72px 0;
  }

  .related-heading {
    max-width: 740px;
    margin: 0 auto 32px;
    text-align: left;
  }

  .related-heading h2 {
    font-size: 26px;
    font-weight: 800;
    color: var(--color-text);
    margin: 10px 0 6px;
    letter-spacing: -0.01em;
  }

  .related-heading p {
    font-size: 14px;
    color: var(--color-text-secondary);
  }

  .related-list {
    max-width: 740px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .related-item {
    display: flex;
    align-items: center;
    gap: 16px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 12px 14px;
    box-shadow: var(--shadow-card);
    transition: box-shadow 0.3s, transform 0.3s;
  }

  .related-item:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-1px);
  }

  .related-item img {
    transition: transform 0.4s ease;
  }

  .related-item:hover img {
    transform: scale(1.05);
  }

  .related-item .item-title {
    font-size: 15px;
    font-weight: 700;
    line-height: 1.5;
    color: var(--color-text);
    margin: 4px 0 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.3s;
  }

  .related-item:hover .item-title { color: var(--color-primary); }

  .related-item .item-meta {
    font-size: 12px;
    color: var(--color-text-muted);
  }

  .related-more {
    max-width: 740px;
    margin: 32px auto 0;
    text-align: center;
  }

  @media (max-width: 767px) {
    .related-section { padding: 48px 0; }
    .related-item { align-items: flex-start; }
    .related-item .item-cover { width: 100px; height: 76px; }
  }

  /* ===== CTA 区 ===== */
  .cta-section {
    background: var(--color-primary-dark);
    padding: 72px 0;
    position: relative;
    overflow: hidden;
  }

  .cta-section::before {
    content: '';
    position: absolute;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    left: -80px;
    bottom: -120px;
    border: 1px solid rgba(255, 255, 255, 0.08);
  }

  .cta-section::after {
    content: '';
    position: absolute;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    right: -50px;
    top: -60px;
    border: 1px solid rgba(255, 255, 255, 0.06);
  }

  .cta-inner {
    position: relative;
    z-index: 1;
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    color: #fff;
  }

  .cta-inner h2 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
  }

  .cta-inner p {
    font-size: 16px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 32px;
  }

  .cta-note {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
    margin-top: 24px;
  }

  @media (max-width: 767px) {
    .cta-section { padding: 52px 0; }
    .cta-inner h2 { font-size: 26px; }
  }

  /* ===== 页脚 ===== */
  .footer-social {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: background 0.3s, color 0.3s, transform 0.3s;
    cursor: pointer;
  }

  .footer-social:hover {
    background: var(--color-accent);
    color: #fff;
    transform: translateY(-2px);
  }