/* PC 端样式 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 251, 247, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: contain;
  flex-shrink: 0;
}

.logo-text {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 1px;
}

.logo-text span {
  display: block;
  font-size: 12px;
  color: var(--text-light);
  font-weight: 400;
  letter-spacing: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav a {
  color: var(--text-secondary);
  font-size: 15px;
  position: relative;
  padding: 4px 0;
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition);
}

.nav a:hover,
.nav a.active {
  color: var(--primary);
}

.nav a:hover::after,
.nav a.active::after {
  width: 100%;
}

.nav-cta {
  padding: 10px 24px !important;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: var(--white) !important;
  border-radius: var(--radius);
  font-size: 14px !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  color: var(--white) !important;
  box-shadow: 0 4px 12px rgba(230, 81, 0, 0.3);
}

/* Hero */
.hero {
  padding: 160px 0 100px;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-section) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(230, 81, 0, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
  position: relative;
}

.hero-content {
  flex: 1;
  max-width: 580px;
}

.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(230, 81, 0, 0.08);
  color: var(--primary);
  font-size: 13px;
  border-radius: 20px;
  margin-bottom: 24px;
  letter-spacing: 2px;
}

.hero-title {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 24px;
  letter-spacing: 2px;
}

.hero-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
}

.hero-visual {
  flex: 1;
  max-width: 480px;
  position: relative;
}

.hero-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

.hero-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.hero-card-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
}

.hero-card-dot:nth-child(2) { background: var(--primary-light); opacity: 0.6; }
.hero-card-dot:nth-child(3) { background: var(--accent); opacity: 0.4; }

.hero-card-title {
  font-size: 14px;
  color: var(--text-light);
  margin-left: 8px;
}

.hero-stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.hero-stat {
  text-align: center;
  padding: 20px;
  background: var(--bg-section);
  border-radius: var(--radius);
}

.hero-stat-num {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.hero-stat-label {
  font-size: 13px;
  color: var(--text-secondary);
}

/* 服务 */
.services {
  padding: 100px 0;
  background: var(--white);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.service-card {
  padding: 40px 32px;
  background: var(--bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transition: transform var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(230, 81, 0, 0.1) 0%, rgba(216, 67, 21, 0.1) 100%);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 24px;
}

.service-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.service-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.service-features {
  list-style: none;
}

.service-features li {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
}

.service-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 600;
}

/* 优势 */
.advantages {
  padding: 100px 0;
  background: var(--bg-section);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.advantage-item {
  text-align: center;
  padding: 36px 24px;
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.advantage-item:hover {
  box-shadow: var(--shadow);
}

.advantage-num {
  font-size: 36px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

.advantage-item h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.advantage-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 流程 */
.process {
  padding: 100px 0;
  background: var(--white);
}

.process-steps {
  display: flex;
  justify-content: space-between;
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 60px;
  right: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-light), var(--accent));
  opacity: 0.3;
}

.process-step {
  text-align: center;
  flex: 1;
  position: relative;
}

.step-circle {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  margin: 0 auto 20px;
  position: relative;
  z-index: 1;
}

.process-step h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 160px;
  margin: 0 auto;
}

/* FAQ */
.faq {
  padding: 100px 0;
  background: var(--bg-section);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border-radius: var(--radius);
  margin-bottom: 12px;
  border: 1px solid var(--border);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  text-align: left;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: inherit;
  transition: color var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question::after {
  content: '+';
  font-size: 20px;
  color: var(--primary);
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item.active .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* 联系 */
.contact {
  padding: 100px 0;
  background: var(--white);
}

.contact-inner {
  display: flex;
  gap: 60px;
  align-items: stretch;
}

.contact-info {
  flex: 1;
}

.contact-info h3 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-icon {
  width: 44px;
  height: 44px;
  background: rgba(230, 81, 0, 0.08);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 4px;
  font-weight: 400;
}

.contact-item p {
  font-size: 16px;
  color: var(--text);
}

.contact-form {
  flex: 1;
  background: var(--bg);
  padding: 40px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.contact-form h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 15px;
  font-family: inherit;
  background: var(--white);
  color: var(--text);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-submit {
  width: 100%;
}

/* 企微二维码 */
.contact-qrcode .qrcode-img {
  width: 96px;
  height: 96px;
  margin-top: 8px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a:hover {
  color: var(--primary-light);
}

/* CTA 横幅 */
.cta-banner {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--accent) 100%);
  text-align: center;
  color: var(--white);
}

.cta-banner h2 {
  font-size: 32px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.cta-banner p {
  font-size: 16px;
  opacity: 0.9;
  margin-bottom: 32px;
}

.cta-banner .btn-primary {
  background: var(--white);
  color: var(--primary);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.cta-banner .btn-primary:hover {
  background: var(--bg);
  color: var(--primary-dark);
}