/* ======================================================
   子页公共：蓝色渐变页头
   ====================================================== */
.page-header {
  padding: 50px 2rem 80px;
  background: linear-gradient(135deg, #0066cc 0%, #004d99 100%);
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)" /></svg>');
  opacity: 0.5;
}
.page-header h1 { font-size: 2.8rem; font-weight: 900; margin-bottom: 1rem; position: relative; }
.page-header p { font-size: 1.25rem; opacity: 0.9; position: relative; }

/* ======================================================
   首页：Hero
   ====================================================== */
.hero {
  padding: 90px 2rem;
  background: linear-gradient(135deg, #0066cc 0%, #004d99 100%);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)" /></svg>');
  opacity: 0.5;
}
.hero-container {
  max-width: var(--container); margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 4rem;
  align-items: center; position: relative; z-index: 1;
}
.hero-content h1 { font-size: 3.2rem; color: #fff; margin-bottom: 1.5rem; line-height: 1.25; font-weight: 900; }
.hero-content h1 .highlight { color: var(--secondary-color); }
.hero-content p { font-size: 1.25rem; color: rgba(255, 255, 255, 0.9); margin-bottom: 2.5rem; line-height: 1.8; }
.hero-buttons { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 3rem; }
.hero-stats .stat-item {
  text-align: center; padding: 1.5rem;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}
.hero-stats .stat-number { font-size: 2.4rem; font-weight: 900; color: #fff; margin-bottom: 0.5rem; }
.hero-stats .stat-label { color: rgba(255, 255, 255, 0.8); font-size: 0.95rem; }
.hero-image { position: relative; }
.hero-image img { width: 100%; border-radius: 20px; box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3); }

/* ======================================================
   首页：核心优势 features
   ====================================================== */
.features { padding: 50px 2rem; background: var(--bg-light); }
.features-container { max-width: var(--container); margin: 0 auto; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.feature-card {
  background: #fff; padding: 2.5rem; border-radius: 20px;
  box-shadow: var(--shadow); transition: all 0.3s;
  border: 2px solid transparent;
}
.feature-card:hover { transform: translateY(-10px); box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15); border-color: var(--primary-color); }
.feature-icon {
  width: 70px; height: 70px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-darker));
  border-radius: 20px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.5rem; font-size: 2rem; color: #fff;
}
.feature-card h3 { font-size: 1.4rem; margin-bottom: 1rem; color: var(--text-dark); }
.feature-card p { color: var(--text-light); line-height: 1.8; }

/* ======================================================
   首页：服务项目 services
   ====================================================== */
.services { padding: 50px 2rem; background: #fff; }
.services-container { max-width: var(--container); margin: 0 auto; }
.services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 3rem; margin-top: 3rem; }
.service-card {
  background: var(--bg-light); padding: 3rem; border-radius: 25px;
  position: relative; overflow: hidden; transition: all 0.3s;
}
.service-card::before {
  content: ''; position: absolute; top: 0; left: 0; width: 5px; height: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  transform: scaleY(0); transition: transform 0.3s;
}
.service-card:hover::before { transform: scaleY(1); }
.service-card:hover { background: #fff; box-shadow: var(--shadow); }
.service-number { position: absolute; top: 2rem; right: 2rem; font-size: 4rem; font-weight: 900; color: rgba(0, 102, 204, 0.1); }
.service-card h3 { font-size: 1.7rem; margin-bottom: 1rem; color: var(--text-dark); }
.service-card > p { color: var(--text-light); margin-bottom: 1.5rem; line-height: 1.8; }
.service-features { list-style: none; }
.service-features li { padding: 0.7rem 0; color: var(--text-dark); display: flex; align-items: center; gap: 0.7rem; }
.service-features li i { color: var(--success-color); font-size: 1rem; }
.service-link {
  display: inline-flex; align-items: center; gap: 0.5rem;
  color: var(--primary-color); font-weight: 600; margin-top: 1.5rem; transition: gap 0.3s;
}
.service-link:hover { gap: 1rem; }

/* ======================================================
   首页：选择理由 why-choose
   ====================================================== */
.why-choose { padding: 50px 2rem; background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%); }
.why-choose-container { max-width: var(--container); margin: 0 auto; }
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 3rem; }
.why-card {
  background: #fff; padding: 2.5rem; border-radius: 20px; text-align: center;
  box-shadow: var(--shadow); transition: all 0.3s;
}
.why-card:hover { transform: translateY(-10px); }
.why-icon {
  width: 80px; height: 80px;
  background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1.5rem; font-size: 2.2rem; color: #fff;
}
.why-card h3 { font-size: 1.4rem; margin-bottom: 1rem; color: var(--text-dark); }
.why-card p { color: var(--text-light); line-height: 1.8; }

/* ======================================================
   首页：CTA
   ====================================================== */
.cta-section {
  padding: 90px 2rem;
  background: linear-gradient(135deg, var(--primary-color) 0%, #004d99 100%);
  position: relative; overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)" /></svg>');
  opacity: 0.5;
}
.cta-container { max-width: 1000px; margin: 0 auto; text-align: center; position: relative; z-index: 1; }
.cta-container h2 { font-size: 2.5rem; color: #fff; margin-bottom: 1.5rem; font-weight: 900; }
.cta-container > p { font-size: 1.25rem; color: rgba(255, 255, 255, 0.9); margin-bottom: 3rem; }
.cta-buttons { display: flex; gap: 2rem; justify-content: center; flex-wrap: wrap; }
.cta-box {
  background: #fff; padding: 2rem; border-radius: 15px;
  display: flex; align-items: center; gap: 1.5rem; min-width: 300px;
  transition: all 0.3s; text-align: left;
}
.cta-box:hover { transform: translateY(-5px); box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2); }
.cta-icon {
  width: 60px; height: 60px; background: var(--bg-light); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem; color: var(--primary-color); flex-shrink: 0;
}
.cta-info h4 { font-size: 1rem; color: var(--text-light); margin-bottom: 0.3rem; }
.cta-value { font-size: 1.5rem; font-weight: 700; color: var(--primary-color); }
.cta-value a { color: var(--primary-color); }

/* ======================================================
   服务项目页 services.php
   ====================================================== */
.service-detail { padding: 50px 2rem; background: #fff; }
.service-detail:nth-child(even) { background: var(--bg-light); }
.service-container { max-width: 1200px; margin: 0 auto; }
.service-content { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; margin-bottom: 2rem; }
.service-info h2 { font-size: 2.3rem; font-weight: 900; color: var(--text-dark); margin-bottom: 1rem; }
.service-subtitle { font-size: 1.2rem; color: var(--text-light); margin-bottom: 2rem; }
.service-description { color: var(--text-dark); line-height: 1.8; margin-bottom: 2rem; }
.svc-features { list-style: none; margin-bottom: 2rem; }
.svc-features li { padding: 0.5rem 0; display: flex; align-items: flex-start; gap: 0.6rem; }
.svc-features li i { color: var(--success-color); font-size: 1.2rem; margin-top: 0.4rem; }
.svc-features li strong { color: var(--text-dark); }
.price-box {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-darker));
  color: #fff; padding: 2rem; border-radius: 20px; margin-bottom: 2rem;
}
.price-label { font-size: 1rem; opacity: 0.9; margin-bottom: 0.5rem; }
.price-value { font-size: 2.4rem; font-weight: 900; margin-bottom: 0.5rem; }
.price-note { font-size: 0.9rem; opacity: 0.8; }
.service-cta {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--secondary-color); color: #fff;
  padding: 1rem 2.5rem; border-radius: 50px; font-weight: 600; transition: all 0.3s;
}
.service-cta:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(255, 107, 53, 0.4); }
.service-image img { width: 100%; border-radius: 20px; box-shadow: var(--shadow); }
.process-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 2rem; margin-top: 3rem; }
.step-card { background: #fff; padding: 2rem; border-radius: 15px; box-shadow: var(--shadow); text-align: center; }
.step-number {
  width: 50px; height: 50px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-darker));
  color: #fff; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; font-weight: 900; margin: 0 auto 1rem;
}
.step-card h3 { font-size: 1.2rem; margin-bottom: 0.8rem; color: var(--text-dark); }
.step-card p { color: var(--text-light); font-size: 0.95rem; }
.comparison-section { padding: 50px 2rem; background: var(--bg-light); }
.comparison-container { max-width: 1200px; margin: 0 auto; }
.comparison-table { background: #fff; border-radius: 20px; overflow: hidden; box-shadow: var(--shadow); }
.comparison-table table { width: 100%; border-collapse: collapse; }
.comparison-table th, .comparison-table td { padding: 1.3rem 1.5rem; text-align: left; border-bottom: 1px solid var(--border-color); }
.comparison-table th { background: var(--primary-color); color: #fff; font-weight: 600; }
.comparison-table tr:last-child td { border-bottom: none; }
.comparison-table td:first-child { font-weight: 600; color: var(--text-dark); white-space: nowrap; }
.check-icon { color: var(--success-color); font-size: 1.1rem; margin-right: 0.4rem; }
.cross-icon { color: #ef4444; font-size: 1.1rem; margin-right: 0.4rem; }

/* ======================================================
   成功案例页 case.php
   ====================================================== */
.cases-section { padding: 50px 2rem; background: var(--bg-light); }
.cases-container { max-width: var(--container); margin: 0 auto; }
.filter-tabs { display: flex; justify-content: center; gap: 1rem; margin-bottom: 3rem; flex-wrap: wrap; }
.filter-btn {
  padding: 0.7rem 1.8rem; border: 2px solid var(--primary-color);
  background: #fff; color: var(--primary-color);
  border-radius: 50px; font-weight: 600; cursor: pointer; transition: all 0.3s;
}
.filter-btn:hover, .filter-btn.active { background: var(--primary-color); color: #fff; }
.cases-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(380px, 1fr)); gap: 2.5rem; }
.case-card { background: #fff; border-radius: 20px; overflow: hidden; box-shadow: var(--shadow); transition: all 0.3s; }
.case-card:hover { transform: translateY(-10px); box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15); }
.case-image { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
.case-content { padding: 2rem; }
.case-category {
  display: inline-block; padding: 0.35rem 1rem;
  background: var(--primary-color); color: #fff;
  border-radius: 20px; font-size: 0.85rem; font-weight: 600; margin-bottom: 1rem;
}
.case-title { font-size: 1.4rem; font-weight: 700; color: var(--text-dark); margin-bottom: 1rem; }
.case-description { color: var(--text-light); margin-bottom: 1.5rem; line-height: 1.8; }
.case-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; padding: 1.5rem; background: var(--bg-light); border-radius: 15px; margin-bottom: 1.5rem; }
.case-stats .stat-item { text-align: center; }
.case-stats .stat-value { font-size: 1.6rem; font-weight: 900; color: var(--primary-color); margin-bottom: 0.3rem; }
.case-stats .stat-label { font-size: 0.85rem; color: var(--text-light); }
.testimonial { background: #fffbf0; padding: 1.5rem; border-radius: 15px; border-left: 4px solid var(--secondary-color); margin-bottom: 1.5rem; }
.testimonial-text { color: var(--text-dark); font-style: italic; margin-bottom: 0.8rem; }
.testimonial-author { font-weight: 600; color: var(--text-dark); font-size: 0.95rem; }
.case-link { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--primary-color); font-weight: 600; transition: gap 0.3s; }
.case-link:hover { gap: 1rem; }

/* ======================================================
   关于我们页 about.php
   ====================================================== */
.about-section { padding: 50px 2rem; }
.about-container { max-width: 1200px; margin: 0 auto; }
.about-content { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.about-text h2 { font-size: 2.3rem; font-weight: 900; color: var(--text-dark); margin-bottom: 1.5rem; line-height: 1.35; }
.about-text p { color: var(--text-dark); margin-bottom: 1.5rem; line-height: 1.9; }
.about-image img { width: 100%; border-radius: 20px; box-shadow: var(--shadow); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; padding: 2rem 0; }
.stat-card { text-align: center; padding: 2rem; background: var(--bg-light); border-radius: 15px; transition: all 0.3s; }
.stat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.stat-card .stat-number { font-size: 2.8rem; font-weight: 900; color: var(--primary-color); margin-bottom: 0.5rem; }
.stat-card .stat-label { color: var(--text-light); font-size: 1rem; }
.values-section { padding: 50px 2rem; background: var(--bg-light); }
.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; max-width: 1200px; margin: 3rem auto 0; }
.value-card { background: #fff; padding: 2.5rem; border-radius: 20px; text-align: center; box-shadow: var(--shadow); transition: all 0.3s; }
.value-card:hover { transform: translateY(-8px); }
.value-icon {
  width: 70px; height: 70px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-darker));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1.5rem; font-size: 2rem; color: #fff;
}
.value-card h3 { font-size: 1.4rem; margin-bottom: 1rem; color: var(--text-dark); }
.value-card p { color: var(--text-light); line-height: 1.8; }

/* ======================================================
   联系我们页 contact.php
   ====================================================== */
.contact-methods { padding: 60px 2rem; background: var(--bg-light); }
.contact-container { max-width: 1200px; margin: 0 auto; }
.methods-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.method-card {
  background: #fff; padding: 2.5rem; border-radius: 20px; text-align: center;
  box-shadow: var(--shadow); transition: all 0.3s; border: 3px solid transparent;
}
.method-card:hover { transform: translateY(-10px); border-color: var(--primary-color); }
.method-icon {
  width: 80px; height: 80px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-darker));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1.5rem; font-size: 2rem; color: #fff;
}
.method-card h3 { font-size: 1.4rem; margin-bottom: 1rem; color: var(--text-dark); }
.method-value { font-size: 1.3rem; font-weight: 700; color: var(--primary-color); margin-bottom: 1rem; }
.method-value a { color: var(--primary-color); }
.method-card p { color: var(--text-light); line-height: 1.8; }
.qr-code {
  width: 160px; height: 160px; background: var(--bg-light);
  margin: 1rem auto; border-radius: 15px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: var(--text-light); font-size: 0.85rem; gap: 6px;
}
.qr-code i { font-size: 3rem; color: var(--success-color); }
.contact-form-section { padding: 50px 2rem; background: #fff; }
.form-container { max-width: 800px; margin: 0 auto; }
.contact-form { background: var(--bg-light); padding: 3rem; border-radius: 25px; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; margin-bottom: 1.5rem; }
.form-group { display: flex; flex-direction: column; }
.form-group.full-width { grid-column: 1 / -1; }
.form-group label { font-weight: 600; margin-bottom: 0.5rem; color: var(--text-dark); }
.form-group label .required { color: var(--secondary-color); }
.form-group input, .form-group textarea {
  padding: 1rem; border: 2px solid var(--border-color); border-radius: 10px;
  font-size: 1rem; transition: all 0.3s; background: #fff; margin-bottom: 0.5rem;
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1); }
.form-group textarea { min-height: 150px; resize: vertical; }
.form-group .err-msg { color: #e53935; font-size: 0.85rem; min-height: 1.2em; }
.form-group.error input, .form-group.error textarea { border-color: #e53935; }
.submit-btn {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-darker));
  color: #fff; padding: 1.2rem 3rem; border: none; border-radius: 50px;
  font-size: 1.1rem; font-weight: 600; cursor: pointer; transition: all 0.3s;
  width: 100%; display: flex; align-items: center; justify-content: center; gap: 0.5rem;
  margin-top: 1.5rem;
}
.submit-btn:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(0, 102, 204, 0.3); }
.submit-btn:disabled { opacity: 0.7; cursor: not-allowed; transform: none; }
.form-success { display: none; text-align: center; padding: 3rem 1rem; color: var(--text-dark); }
.form-success i { font-size: 3rem; color: var(--success-color); margin-bottom: 1rem; }
.form-success h3 { font-size: 1.5rem; margin-bottom: 0.8rem; }
.form-success p { color: var(--text-light); }
.faq-section { padding: 50px 2rem; background: var(--bg-light); }
.faq-container { max-width: 900px; margin: 0 auto; }
.faq-item { background: #fff; padding: 2rem; border-radius: 15px; margin-bottom: 1.5rem; box-shadow: var(--shadow); }
.faq-question { display: flex; align-items: center; gap: 1rem; font-size: 1.15rem; font-weight: 600; color: var(--text-dark); }
.faq-question i { color: var(--primary-color); font-size: 1.4rem; flex-shrink: 0; }
.faq-answer { color: var(--text-light); line-height: 1.8; padding: 1rem 0 0 2.5rem; }

/* ======================================================
   博客列表 opview.php
   ====================================================== */
.blog-section { padding: 60px 2rem 80px; background: var(--bg-light); }
.blog-container { max-width: 1200px; margin: 0 auto; }
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(350px, 1fr)); gap: 2.5rem; }
.blog-card { background: #fff; border-radius: 20px; overflow: hidden; box-shadow: var(--shadow); transition: all 0.3s; }
.blog-card:hover { transform: translateY(-10px); box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15); }
.blog-card a { display: block; }
.blog-image { width: 100%; height: 220px; object-fit: cover; }
.blog-content { padding: 2rem; }
.blog-meta { display: flex; gap: 1.5rem; margin-bottom: 1rem; font-size: 0.9rem; color: var(--text-light); }
.blog-meta-item { display: flex; align-items: center; gap: 0.4rem; }
.blog-title { font-size: 1.3rem; font-weight: 700; color: var(--text-dark); line-height: 1.5; transition: color 0.3s; }
.blog-card:hover .blog-title { color: var(--primary-color); }

/* ======================================================
   文章详情 opview-article.php
   ====================================================== */
.article-container { max-width: 900px; margin: 50px auto; padding: 0 2rem; }
.article-header { margin-bottom: 2.5rem; }
.article-title { font-size: 2.4rem; font-weight: 900; color: var(--text-dark); margin-bottom: 1.5rem; line-height: 1.35; }
.article-meta { display: flex; gap: 1.5rem; color: var(--text-light); flex-wrap: wrap; font-size: 0.95rem; }
.article-meta-item { display: flex; align-items: center; gap: 0.5rem; }
.article-featured-image { width: 100%; border-radius: 20px; margin-bottom: 2rem; }
.article-content { font-size: 1.1rem; line-height: 1.9; }
.article-content h2 { font-size: 1.7rem; font-weight: 700; color: var(--text-dark); margin: 2rem 0 1rem; }
.article-content h3 { font-size: 1.35rem; font-weight: 600; color: var(--text-dark); margin: 1.5rem 0 1rem; }
.article-content p { margin-bottom: 1.5rem; color: var(--text-dark); }
.article-content ul { list-style-type: disc; margin: 1.5rem 0; padding-left: 2rem; }
.article-content ol { list-style-type: decimal; margin: 1.5rem 0; padding-left: 2rem; }
.article-content li { margin-bottom: 0.8rem; }
.article-content strong { color: var(--text-dark); font-weight: 600; }
.article-content a { color: var(--primary-color); border-bottom: 1px solid var(--primary-color); }
.article-content a:hover { color: var(--secondary-color); border-bottom-color: var(--secondary-color); }
.article-content blockquote {
  color: #999; font-style: italic; margin: 1.5rem 0; padding: 20px 24px;
  background: #f6f6f6; line-height: 1.8; border-radius: 4px; border-left: 5px solid #dbdbdb;
}
.article-content img { border-radius: 12px; margin: 1.5rem 0; }
.article-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 3rem; }
.article-nav a {
  background: var(--bg-light); border: 1px solid var(--border-color);
  padding: 1.5rem; border-radius: 15px; transition: all 0.3s;
}
.article-nav a:hover { border-color: var(--primary-color); box-shadow: var(--shadow); }
.article-nav .an-label { font-size: 0.9rem; color: var(--text-light); margin-bottom: 0.5rem; display: flex; align-items: center; gap: 0.4rem; }
.article-nav .an-title { font-weight: 600; color: var(--text-dark); line-height: 1.5; }
.article-nav .next { text-align: right; }
.article-nav .next .an-label { justify-content: flex-end; }
.article-cta {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-darker));
  color: #fff; padding: 2.5rem; border-radius: 20px; text-align: center; margin: 3rem 0 0;
}
.article-cta h3 { font-size: 1.7rem; margin-bottom: 0.8rem; }
.article-cta p { font-size: 1.05rem; opacity: 0.9; margin-bottom: 1.5rem; }
.article-cta .btn-primary { display: inline-flex; }

/* ======================================================
   响应式
   ====================================================== */
@media (max-width: 968px) {
  .page-header { padding: 30px 1.2rem; }
  .page-header h1 { font-size: 2rem; }
  .page-header p { font-size: 1.05rem; }
  .hero { padding: 40px 1.2rem; }
  .hero-container { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-content h1 { font-size: 2.3rem; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); gap: 0.8rem; }
  .hero-stats .stat-number { font-size: 1.6rem; }
  .hero-stats .stat-item { padding: 1rem 0.5rem; }
  .services-grid { grid-template-columns: 1fr; gap: 2rem; }
  .features-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .cta-container h2 { font-size: 1.8rem; }
  .cta-box { min-width: 0; width: 100%; }
  .service-content { grid-template-columns: 1fr; }
  .service-info h2 { font-size: 1.8rem; }
  .comparison-table { overflow-x: auto; }
  .comparison-table table { min-width: 640px; }
  .cases-grid { grid-template-columns: 1fr; }
  .case-stats .stat-value { font-size: 1.2rem; }
  .case-stats .stat-label { font-size: 0.7rem; }
  .about-content { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .stat-card { padding: 1.2rem; }
  .stat-card .stat-number { font-size: 2rem; }
  .values-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .contact-form { padding: 1.5rem; }
  .blog-grid { grid-template-columns: 1fr; }
  .article-container { margin: 24px auto; }
  .article-title { font-size: 1.8rem; }
  .article-nav { grid-template-columns: 1fr; }
  .article-nav .next { text-align: left; }
  .article-nav .next .an-label { justify-content: flex-start; }
  .features, .services, .why-choose, .service-detail, .comparison-section,
  .cases-section, .about-section, .values-section, .contact-methods,
  .contact-form-section, .faq-section, .blog-section { padding-left: 1.2rem; padding-right: 1.2rem; }
}