/* ============================================
   template-03-service 德扑圈客服中心模板样式
   主色：暖橙色 #f97316，背景：#fffaf5
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --primary: #f97316;
  --primary-dark: #ea580c;
  --primary-light: #ffedd5;
  --primary-lighter: #fff7ed;
  --bg: #fffaf5;
  --bg-alt: #fff1e6;
  --text: #1e1e1e;
  --text-secondary: #4b5563;
  --text-light: #6b7280;
  --white: #ffffff;
  --border: #fde2c5;
  --shadow: 0 4px 24px rgba(249, 115, 22, 0.08);
  --shadow-lg: 0 12px 40px rgba(249, 115, 22, 0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; border: none; font-family: inherit; }

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

.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.section-title {
  font-size: 2rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 16px;
  color: var(--text);
}
.section-desc {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 640px;
  margin: 0 auto 48px;
  line-height: 1.8;
}

/* ---------- Navigation ---------- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255, 250, 245, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.navbar.scrolled {
  box-shadow: 0 2px 20px rgba(249, 115, 22, 0.1);
}
.navbar .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.3rem; font-weight: 800; color: var(--primary);
}
.nav-logo img {
  width: 40px; height: 40px; border-radius: 10px; object-fit: cover;
}
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a {
  padding: 8px 18px; border-radius: 8px;
  font-size: 0.95rem; font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  background: var(--primary-light);
  color: var(--primary-dark);
}
.nav-cta {
  background: var(--primary) !important;
  color: var(--white) !important;
  font-weight: 600 !important;
}
.nav-cta:hover { background: var(--primary-dark) !important; }

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column; gap: 5px;
  background: none; padding: 8px;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--text); border-radius: 2px;
  transition: var(--transition);
}

/* ---------- Hero Section ---------- */
.hero {
  position: relative;
  padding: 140px 0 80px;
  background: linear-gradient(135deg, var(--primary-lighter) 0%, var(--bg-alt) 50%, var(--primary-light) 100%);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; top: -50%; right: -20%;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(249,115,22,0.08) 0%, transparent 70%);
  border-radius: 50%;
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: center;
  position: relative; z-index: 1;
}
.hero-content { max-width: 540px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 8px 18px; border-radius: 40px;
  font-size: 0.85rem; font-weight: 600;
  margin-bottom: 24px;
}
.hero-title {
  font-size: 3rem; font-weight: 900;
  line-height: 1.2; margin-bottom: 20px;
}
.hero-title .highlight { color: var(--primary); }
.hero-desc {
  font-size: 1.1rem; color: var(--text-secondary);
  margin-bottom: 36px; line-height: 1.8;
}
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 12px;
  font-size: 1rem; font-weight: 600;
  transition: var(--transition);
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(249, 115, 22, 0.3);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(249, 115, 22, 0.4);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
}
.btn-white {
  background: var(--white);
  color: var(--primary);
  box-shadow: var(--shadow);
}
.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.hero-image { position: relative; }
.hero-image img {
  width: 100%; border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}
.hero-image .floating-card {
  position: absolute; bottom: -24px; right: -24px;
  background: var(--white);
  padding: 20px; border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  display: flex; align-items: center; gap: 14px;
}
.floating-card .icon {
  width: 48px; height: 48px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
}
.floating-card .info h4 { font-size: 0.9rem; font-weight: 700; }
.floating-card .info p { font-size: 0.8rem; color: var(--text-light); }

/* ---------- Contact Cards ---------- */
.contact-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.contact-card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
}
.contact-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.contact-card .icon {
  width: 64px; height: 64px;
  background: var(--primary-light);
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.8rem;
}
.contact-card h3 {
  font-size: 1.2rem; font-weight: 700;
  margin-bottom: 8px;
}
.contact-card p {
  color: var(--text-light); font-size: 0.9rem;
  margin-bottom: 16px;
}
.contact-card .value {
  font-size: 1.3rem; font-weight: 800;
  color: var(--primary); margin-bottom: 16px;
}
.contact-card .btn { width: 100%; justify-content: center; }

/* ---------- FAQ Quick Entry ---------- */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px;
  transition: var(--transition);
  cursor: pointer;
}
.faq-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.faq-item h4 {
  font-size: 1.05rem; font-weight: 700;
  margin-bottom: 8px;
  display: flex; align-items: center; gap: 10px;
}
.faq-item h4 .q-icon {
  color: var(--primary); font-size: 1.2rem;
}
.faq-item p {
  color: var(--text-secondary); font-size: 0.9rem;
  line-height: 1.6;
}

/* ---------- Download Section ---------- */
.download-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  position: relative; overflow: hidden;
}
.download-section::before {
  content: '';
  position: absolute; top: 0; right: 0;
  width: 400px; height: 400px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%; transform: translate(30%, -30%);
}
.download-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: center;
  position: relative; z-index: 1;
}
.download-content h2 {
  font-size: 2.2rem; font-weight: 800;
  margin-bottom: 20px;
}
.download-content p {
  font-size: 1.05rem; opacity: 0.9;
  margin-bottom: 32px; line-height: 1.8;
}
.download-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.download-btn {
  display: flex; align-items: center; gap: 12px;
  background: var(--white); color: var(--primary-dark);
  padding: 14px 28px; border-radius: 12px;
  font-weight: 700; transition: var(--transition);
}
.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}
.download-btn .btn-icon { font-size: 1.6rem; }
.download-btn .btn-text { text-align: left; }
.download-btn .btn-text small { font-size: 0.7rem; font-weight: 400; opacity: 0.7; }
.download-btn .btn-text span { font-size: 0.95rem; }

.download-mockup img {
  width: 100%; border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

/* ---------- Footer ---------- */
.footer {
  background: #1a1a1a;
  color: rgba(255,255,255,0.7);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px; margin-bottom: 40px;
}
.footer-brand h3 {
  color: var(--white); font-size: 1.3rem;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 0.9rem; line-height: 1.7;
  margin-bottom: 20px;
}
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 40px; height: 40px;
  background: rgba(255,255,255,0.1);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  transition: var(--transition);
}
.footer-social a:hover {
  background: var(--primary);
  color: var(--white);
}
.footer-col h4 {
  color: var(--white); font-size: 1rem;
  margin-bottom: 20px; font-weight: 700;
}
.footer-col a {
  display: block; padding: 6px 0;
  font-size: 0.9rem; color: rgba(255,255,255,0.6);
  transition: var(--transition);
}
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.85rem;
}
.footer-bottom a { color: var(--primary); }

/* ---------- Floating Customer Service Button ---------- */
.float-cs {
  position: fixed; bottom: 30px; right: 30px;
  z-index: 9999;
}
.float-cs-btn {
  width: 60px; height: 60px;
  background: var(--primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; color: var(--white);
  box-shadow: 0 4px 20px rgba(249, 115, 22, 0.4);
  transition: var(--transition);
  position: relative;
}
.float-cs-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 30px rgba(249, 115, 22, 0.5);
}
.float-cs-btn .pulse {
  position: absolute; inset: -6px;
  border: 2px solid var(--primary);
  border-radius: 50%;
  animation: cs-pulse 2s infinite;
}
@keyframes cs-pulse {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(1.5); opacity: 0; }
}
.float-cs-panel {
  position: absolute; bottom: 76px; right: 0;
  width: 300px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: 0 12px 40px rgba(0,0,0,0.15);
  opacity: 0; visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  overflow: hidden;
}
.float-cs-panel.active {
  opacity: 1; visibility: visible;
  transform: translateY(0);
}
.float-cs-header {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  padding: 20px; text-align: center;
}
.float-cs-header h4 { font-size: 1.1rem; margin-bottom: 4px; }
.float-cs-header p { font-size: 0.8rem; opacity: 0.8; }
.float-cs-body { padding: 20px; }
.float-cs-body .cs-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px; border-radius: 10px;
  margin-bottom: 8px;
  transition: var(--transition);
}
.float-cs-body .cs-item:hover { background: var(--primary-lighter); }
.float-cs-body .cs-item .cs-icon {
  width: 40px; height: 40px;
  background: var(--primary-light);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
}
.float-cs-body .cs-item .cs-info .label {
  font-size: 0.75rem; color: var(--text-light);
}
.float-cs-body .cs-item .cs-info .value {
  font-size: 1rem; font-weight: 700; color: var(--primary-dark);
}
.float-cs-close {
  position: absolute; top: 8px; right: 12px;
  background: none; color: rgba(255,255,255,0.8);
  font-size: 1.2rem; padding: 4px 8px;
}

/* ---------- Page Hero (sub pages) ---------- */
.page-hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, var(--primary-lighter) 0%, var(--bg-alt) 100%);
  text-align: center;
}
.page-hero h1 {
  font-size: 2.8rem; font-weight: 900;
  margin-bottom: 16px;
}
.page-hero p {
  font-size: 1.1rem; color: var(--text-secondary);
  max-width: 600px; margin: 0 auto;
}

/* ---------- FAQ Page Specific ---------- */
.faq-categories {
  display: flex; gap: 12px; justify-content: center;
  flex-wrap: wrap; margin-bottom: 48px;
}
.faq-cat-btn {
  padding: 10px 24px; border-radius: 40px;
  background: var(--white); border: 2px solid var(--border);
  font-size: 0.9rem; font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
}
.faq-cat-btn:hover, .faq-cat-btn.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.faq-accordion { max-width: 800px; margin: 0 auto; }
.faq-accordion-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-accordion-item:hover { border-color: var(--primary); }
.faq-accordion-header {
  padding: 20px 24px;
  display: flex; align-items: center; justify-content: space-between;
  cursor: pointer; font-weight: 700;
  font-size: 1rem;
  transition: var(--transition);
}
.faq-accordion-header:hover { background: var(--primary-lighter); }
.faq-accordion-header .arrow {
  transition: var(--transition);
  font-size: 0.8rem; color: var(--primary);
}
.faq-accordion-item.open .arrow { transform: rotate(180deg); }
.faq-accordion-body {
  max-height: 0; overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-accordion-item.open .faq-accordion-body {
  max-height: 400px;
}
.faq-accordion-body p {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ---------- Contact Page Specific ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px; align-items: start;
}
.contact-info-card {
  background: var(--white);
  border: 2px solid var(--primary);
  border-radius: var(--radius);
  padding: 36px;
  text-align: center;
  box-shadow: 0 0 0 4px var(--primary-light);
}
.contact-info-card .wechat-qr {
  width: 160px; height: 160px;
  background: var(--primary-lighter);
  border-radius: var(--radius-sm);
  margin: 0 auto 20px;
  display: flex; align-items: center; justify-content: center;
  font-size: 4rem;
}
.contact-info-card h3 {
  font-size: 1.4rem; font-weight: 800;
  color: var(--primary); margin-bottom: 8px;
}
.contact-info-card .wechat-id {
  font-size: 2rem; font-weight: 900;
  color: var(--primary-dark);
  margin-bottom: 12px;
  letter-spacing: 2px;
}
.contact-info-card .hint {
  color: var(--text-secondary); font-size: 0.9rem;
}
.contact-form {
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow);
}
.contact-form h3 {
  font-size: 1.3rem; font-weight: 700;
  margin-bottom: 24px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; font-size: 0.9rem;
  font-weight: 600; margin-bottom: 8px;
  color: var(--text);
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%; padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: 10px; font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
  background: var(--bg);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.contact-form .btn { width: 100%; justify-content: center; }

/* ---------- Downloads Page Specific ---------- */
.app-showcase {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.app-card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  transition: var(--transition);
}
.app-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.app-card .app-icon {
  width: 80px; height: 80px;
  background: var(--primary-light);
  border-radius: 20px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  font-size: 2.5rem;
}
.app-card h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 8px; }
.app-card .version {
  font-size: 0.85rem; color: var(--text-light);
  margin-bottom: 16px;
}
.app-card .features {
  text-align: left; margin-bottom: 24px;
}
.app-card .features li {
  padding: 6px 0; font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex; align-items: center; gap: 8px;
}
.app-card .features li::before {
  content: '✓'; color: var(--primary); font-weight: 700;
}

/* ---------- Article Page Specific ---------- */
.article-body {
  max-width: 800px; margin: 0 auto;
  padding: 60px 24px;
}
.article-body h2 {
  font-size: 1.6rem; font-weight: 800;
  margin: 40px 0 20px; color: var(--text);
}
.article-body h3 {
  font-size: 1.2rem; font-weight: 700;
  margin: 28px 0 12px; color: var(--text);
}
.article-body p {
  color: var(--text-secondary);
  line-height: 1.9; margin-bottom: 16px;
}
.article-body .step-box {
  background: var(--primary-lighter);
  border-left: 4px solid var(--primary);
  padding: 20px 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
}
.article-body .step-box h4 {
  font-size: 1rem; font-weight: 700;
  color: var(--primary-dark); margin-bottom: 8px;
}
.article-body img {
  border-radius: var(--radius-sm);
  margin: 24px 0;
  box-shadow: var(--shadow);
}
.article-body .tip-box {
  background: #f0fdf4;
  border: 1px solid #86efac;
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin: 20px 0;
  display: flex; align-items: flex-start; gap: 12px;
}
.article-body .tip-box .tip-icon { font-size: 1.3rem; }
.article-body .tip-box p { margin: 0; color: #166534; font-size: 0.9rem; }

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  padding: 20px 0;
  font-size: 0.85rem;
  color: var(--text-light);
}
.breadcrumb a { color: var(--primary); }
.breadcrumb span { margin: 0 8px; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero .container { grid-template-columns: 1fr; text-align: center; }
  .hero-content { max-width: 100%; }
  .hero-buttons { justify-content: center; }
  .hero-image { display: none; }
  .contact-cards { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: 1fr; }
  .download-mockup { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .app-showcase { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .section-title { font-size: 1.6rem; }
  .hero { padding: 120px 0 60px; }
  .hero-title { font-size: 2rem; }
  .page-hero h1 { font-size: 2rem; }
  .nav-links { display: none; }
  .nav-links.active {
    display: flex; flex-direction: column;
    position: absolute; top: 72px; left: 0; right: 0;
    background: var(--white);
    padding: 20px;
    box-shadow: var(--shadow-lg);
    border-radius: 0 0 var(--radius) var(--radius);
  }
  .nav-toggle { display: flex; }
  .faq-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .float-cs-panel { width: 260px; right: -10px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.6rem; }
  .btn { padding: 12px 24px; font-size: 0.9rem; }
  .contact-card { padding: 24px 20px; }
}

/* ---------- Article Center Page ---------- */
.article-center-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}
.article-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.article-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.article-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.article-card .card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: var(--primary-lighter);
}
.article-card .card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.article-card .card-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 10px;
  align-self: flex-start;
}
.article-card .card-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
  line-height: 1.4;
}
.article-card .card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
  flex: 1;
}
.article-card .card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: var(--text-light);
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.article-card .card-meta a {
  color: var(--primary);
  font-weight: 600;
}

/* Sidebar */
.article-sidebar {
  position: sticky;
  top: 90px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.sidebar-widget {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}
.sidebar-widget h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
}
.sidebar-widget .cs-wechat-box {
  text-align: center;
}
.sidebar-widget .cs-wechat-box .icon {
  width: 64px; height: 64px;
  background: var(--primary-light);
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 14px;
  font-size: 1.8rem;
}
.sidebar-widget .cs-wechat-box .wechat-num {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: 3px;
  margin-bottom: 8px;
}
.sidebar-widget .cs-wechat-box p {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 16px;
}
.sidebar-widget .download-cta-box {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  color: var(--white);
}
.sidebar-widget .download-cta-box h4 {
  color: var(--white);
  margin-bottom: 8px;
}
.sidebar-widget .download-cta-box p {
  font-size: 0.85rem;
  opacity: 0.9;
  margin-bottom: 16px;
}
.sidebar-widget .download-cta-box .btn {
  width: 100%;
  justify-content: center;
}
.sidebar-widget .quick-links li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}
.sidebar-widget .quick-links li:last-child { border-bottom: none; }
.sidebar-widget .quick-links a {
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-widget .quick-links a:hover { color: var(--primary); }
.sidebar-widget .quick-links a::before {
  content: '›';
  color: var(--primary);
  font-weight: 700;
}

/* GEO FAQ Block */
.geo-faq-block {
  max-width: 800px;
  margin: 0 auto;
}
.geo-faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  overflow: hidden;
}
.geo-faq-item summary {
  padding: 18px 24px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
}
.geo-faq-item summary::-webkit-details-marker { display: none; }
.geo-faq-item summary::before {
  content: 'Q';
  background: var(--primary);
  color: var(--white);
  width: 28px; height: 28px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  flex-shrink: 0;
}
.geo-faq-item summary:hover { background: var(--primary-lighter); }
.geo-faq-item[open] summary { border-bottom: 1px solid var(--border); }
.geo-faq-item .geo-answer {
  padding: 16px 24px 20px 62px;
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 0.92rem;
}

/* Site Map / Internal Links Grid */
.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 32px;
}
.sitemap-grid a {
  display: block;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: var(--transition);
}
.sitemap-grid a:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
  background: var(--primary-lighter);
}
.sitemap-grid a::before {
  content: '🔗';
  margin-right: 8px;
}

/* Related Articles (article pages) */
.related-articles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.related-article-card {
  display: block;
  background: var(--white);
  padding: 20px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}
.related-article-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}
.related-article-card h4 {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
}
.related-article-card p {
  font-size: 0.83rem;
  color: var(--text-secondary);
  margin: 0;
}

/* Article wechat CTA at end */
.article-wechat-cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius);
  padding: 36px;
  text-align: center;
  margin: 40px 0;
  color: var(--white);
}
.article-wechat-cta h3 {
  color: var(--white);
  margin-top: 0;
}
.article-wechat-cta .wechat-id-large {
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: 3px;
  margin: 8px 0 20px;
}

@media (max-width: 1024px) {
  .article-center-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; flex-direction: row; flex-wrap: wrap; }
  .article-sidebar > * { flex: 1; min-width: 260px; }
  .sitemap-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .article-cards { grid-template-columns: 1fr; }
  .related-articles { grid-template-columns: 1fr; }
  .sitemap-grid { grid-template-columns: 1fr; }
  .article-sidebar { flex-direction: column; }
}