/* 优珩科技官网 - 深色科技风 */

:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: #1e293b;
  --text-primary: #ffffff;
  --text-secondary: #94a3b8;
  --accent: #00d4ff;
  --accent-light: #00d4ff;
  --accent-purple: #a855f7;
  --gradient: linear-gradient(135deg, #00d4ff, #a855f7);
  --border: #2d3a56;
  --success: #10b981;
  --warning: #f59e0b;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

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

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(10, 14, 26, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  padding: 16px 0;
  transition: all 0.4s ease;
}
.navbar.scrolled {
  background: rgba(10, 14, 26, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo img {
  height: 40px;
  border-radius: 50%;
  transition: filter 0.3s ease, transform 0.3s ease;
}
.logo img:hover {
  filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.5));
  transform: scale(1.05);
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: #94a3b8;
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: var(--text-primary);
}

/* 按钮 */
.btn-primary {
  background: var(--gradient);
  color: white;
  padding: 14px 28px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-block;
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 212, 255, 0.2);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0, 212, 255, 0.4), 0 0 40px rgba(168, 85, 247, 0.2);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  padding: 14px 28px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  border: 1px solid var(--border);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

.btn-secondary:hover {
  border-color: var(--accent);
  background: rgba(0, 212, 255, 0.08);
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  padding: 14px 28px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  border: 1px solid var(--border);
  display: block;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

.btn-outline:hover {
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.1);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.2);
}

.btn-full {
  width: 100%;
}

/* Hero 区 */
.hero {
  padding: 160px 0 100px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 50% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
}

.hero-badge {
  display: inline-block;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--accent-light);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 700;
  line-height: 1.05;
  margin-bottom: 32px;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 18px;
  color: #94a3b8;
  margin-bottom: 32px;
  max-width: 500px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 40px;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 32px;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 14px;
  color: #94a3b8;
}

/* 终端动画 */
.terminal-window {
  background: var(--bg-card);
  border-radius: 16px;
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(59, 130, 246, 0.1);
  position: relative;
}

.terminal-window::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  bottom: -1px;
  background: var(--gradient);
  border-radius: 17px;
  z-index: -1;
  opacity: 0.3;
  filter: blur(20px);
}

.terminal-header {
  background: var(--bg-secondary);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border);
}

.terminal-dots {
  display: flex;
  gap: 8px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.red { background: #ef4444; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #10b981; }

.terminal-title {
  font-size: 12px;
  color: #94a3b8;
}

.terminal-body {
  padding: 20px;
  font-family: 'Monaco', 'Menlo', monospace;
  font-size: 14px;
}

.terminal-line {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  opacity: 0;
  animation: fadeIn 0.5s ease forwards;
}

.terminal-line:nth-child(1) { animation-delay: 0.5s; }
.terminal-line:nth-child(2) { animation-delay: 1.5s; }
.terminal-line:nth-child(3) { animation-delay: 2.5s; }
.terminal-line:nth-child(4) { animation-delay: 3.5s; }
.terminal-line:nth-child(5) { animation-delay: 4.5s; }
.terminal-line:nth-child(6) { animation-delay: 5.5s; }
.terminal-line:nth-child(7) { animation-delay: 6.5s; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.prompt {
  color: var(--accent);
}

.command {
  color: var(--text-primary);
}

.output {
  color: #94a3b8;
  padding-left: 20px;
}

.success {
  color: var(--success);
}

.info {
  color: var(--accent-light);
}

.cursor {
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 50% { opacity: 0; }
  51%, 100% { opacity: 1; }
}

/* 通用区块样式 */
.section-header {
  text-align: center;
  margin-bottom: 72px;
}

.section-badge {
  display: inline-block;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--accent-light);
  padding: 8px 20px;
  border-radius: 24px;
  font-size: 13px;
  font-weight: 600;
  color: #f1f5f9; margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.section-header h2 {
  font-size: 44px;
  font-weight: 700;
  color: #f1f5f9; margin-bottom: 20px;
  line-height: 1.2;
}

.section-header p {
  font-size: 18px;
  color: #94a3b8;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* 工具站 */
.tools {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.tools-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.tools-text h2 {
  font-size: 40px;
  font-weight: 700;
  margin: 16px 0 24px;
}

.tools-text p {
  font-size: 18px;
  color: #94a3b8;
  margin-bottom: 32px;
  line-height: 1.6;
}

.tools-preview {
  display: flex;
  justify-content: center;
}

.tool-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 32px;
  border: 1px solid var(--border);
  text-align: center;
  max-width: 300px;
  transition: all 0.3s;
}

.tool-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.tool-icon {
  font-size: 32px;
  color: var(--accent);
  margin-bottom: 16px;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 16px;
  margin: 0 auto 16px;
}

.tool-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.tool-card p {
  font-size: 14px;
  color: #94a3b8;
}

/* 服务板块 */
.services {
  padding: 100px 0;
  background: var(--bg-secondary);
}

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

.service-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 32px;
  border: 1px solid var(--border);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transition: transform 0.4s;
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

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

.service-card.featured {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.1) 0%, var(--bg-card) 100%);
}

.service-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--gradient);
  color: white;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
}

.service-icon {
  font-size: 32px;
  color: #f1f5f9; margin-bottom: 20px;
  color: var(--accent);
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 16px;
}

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

.service-card p {
  font-size: 14px;
  color: #94a3b8;
  color: #f1f5f9; margin-bottom: 20px;
}

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

.service-features li {
  font-size: 13px;
  color: #94a3b8;
  padding: 8px 0;
  border-top: 1px solid var(--border);
}

.service-features li:first-child {
  border-top: none;
}

/* 特性展示 */
.features {
  padding: 100px 0;
}

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

.feature-item {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 32px;
  border: 1px solid var(--border);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.feature-item:hover {
  transform: translateY(-8px);
  border-color: var(--accent);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.feature-icon {
  font-size: 24px;
  margin-bottom: 16px;
  color: var(--accent);
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 12px;
}

.feature-item h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-item p {
  font-size: 14px;
  color: #94a3b8;
}

/* 服务流程 */
.process {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.step {
  text-align: center;
  position: relative;
  padding: 24px;
  background: var(--bg-card);
  border-radius: 16px;
  border: 1px solid var(--border);
  transition: all 0.3s;
}

.step:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.step::after {
  content: '→';
  position: absolute;
  top: 50%;
  right: -20px;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 20px;
  z-index: 1;
}

.step:last-child::after {
  display: none;
}

.step-number {
  font-size: 36px;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  display: inline-block;
  width: 64px;
  height: 64px;
  line-height: 64px;
  border-radius: 50%;
  background-color: rgba(59, 130, 246, 0.1);
  -webkit-text-fill-color: var(--accent);
}

.step h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.step p {
  font-size: 14px;
  color: #94a3b8;
}

/* 套餐方案 */
.pricing {
  padding: 100px 0;
}

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

.pricing-card {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 40px;
  border: 1px solid var(--border);
  text-align: center;
  transition: transform 0.3s;
}

.pricing-card:hover {
  transform: translateY(-4px);
}

.pricing-card.featured {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.1) 0%, var(--bg-card) 100%);
  transform: scale(1.05);
}

.pricing-badge {
  display: inline-block;
  background: var(--gradient);
  color: white;
  padding: 4px 16px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 24px;
}

.pricing-card h3 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 24px;
}

.price {
  margin-bottom: 32px;
}

.currency {
  font-size: 24px;
  vertical-align: top;
}

.amount {
  font-size: 48px;
  font-weight: 700;
}

.period {
  font-size: 16px;
  color: #94a3b8;
}

.pricing-features {
  list-style: none;
  margin-bottom: 32px;
  text-align: left;
}

.pricing-features li {
  font-size: 14px;
  color: #94a3b8;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.pricing-features li:last-child {
  border-bottom: none;
}

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

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

.faq-item {
  background: var(--bg-card);
  border-radius: 16px;
  margin-bottom: 16px;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all 0.3s;
}

.faq-item:hover {
  border-color: rgba(59, 130, 246, 0.3);
}

.faq-question {
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: background 0.3s;
}

.faq-question:hover {
  background: rgba(59, 130, 246, 0.1);
}

.faq-question span:first-child {
  font-size: 16px;
  font-weight: 600;
}

.faq-icon {
  font-size: 20px;
  color: var(--accent);
  transition: transform 0.3s;
}

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

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s, padding 0.3s;
}

.faq-item.active .faq-answer {
  max-height: 200px;
  padding: 0 24px 20px;
}

.faq-answer p {
  font-size: 14px;
  color: #94a3b8;
  line-height: 1.8;
}

/* 联系我们 */
.contact {
  padding: 100px 0;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info h2 {
  font-size: 40px;
  font-weight: 700;
  margin: 16px 0 24px;
}

.contact-info > p {
  font-size: 18px;
  color: #94a3b8;
  margin-bottom: 40px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.contact-icon {
  font-size: 20px;
  margin-top: 4px;
  color: var(--accent);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 12px;
}

.contact-item h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-item p {
  font-size: 14px;
  color: #94a3b8;
}

.contact-form {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 40px;
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.contact-form::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient);
}

.form-group {
  color: #f1f5f9; margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 16px 18px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 14px;
  transition: all 0.3s;
  font-family: inherit;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #94a3b8;
  opacity: 0.7;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.05);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group textarea {
  resize: vertical;
}

/* 右下角固定联系按钮 */
.fixed-contact-btn {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
  background: var(--gradient);
  color: white;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.3), 0 0 40px rgba(168, 85, 247, 0.15);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s ease;
  font-size: 20px;
}
.fixed-contact-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 12px 32px rgba(0, 212, 255, 0.4), 0 0 60px rgba(168, 85, 247, 0.25);
}
.fixed-contact-btn::after {
  content: '咨询';
  position: absolute;
  right: 64px;
  background: var(--bg-card);
  color: white;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 13px;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(8px);
  transition: all 0.3s ease;
  border: 1px solid var(--border);
}
.fixed-contact-btn:hover::after {
  opacity: 1;
  transform: translateX(0);
}

/* 底部 */
.footer {
  padding: 60px 0 30px;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 40px;
}

.footer-logo {
  height: 32px;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  color: #94a3b8;
}

.footer-links h4 {
  font-size: 14px;
  font-weight: 600;
  color: #f1f5f9; margin-bottom: 20px;
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  font-size: 14px;
  color: #94a3b8;
  text-decoration: none;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--border);
}

.footer-bottom p {
  font-size: 13px;
  color: #94a3b8;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.footer-bottom a {
  color: #94a3b8;
  text-decoration: none;
  transition: color 0.3s;
}

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

.beian-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  vertical-align: middle;
}

.beian-icon {
  width: 16px;
  height: 16px;
  vertical-align: middle;
  display: inline-block;
  margin-top: -2px;
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.animate-in {
  animation: fadeInUp 0.6s ease-out forwards;
  opacity: 0;
}

.animate-in:nth-child(1) { animation-delay: 0.1s; }
.animate-in:nth-child(2) { animation-delay: 0.2s; }
.animate-in:nth-child(3) { animation-delay: 0.3s; }
.animate-in:nth-child(4) { animation-delay: 0.4s; }
.animate-in:nth-child(5) { animation-delay: 0.5s; }
.animate-in:nth-child(6) { animation-delay: 0.6s; }

/* 滚动动画观察器样式 */
[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

/* 响应式 */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-desc {
    margin: 0 auto 32px;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-visual {
    display: none;
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .step::after {
    display: none;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .pricing-card.featured {
    transform: none;
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero h1 {
    font-size: 36px;
  }

  .section-header h2 {
    font-size: 28px;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .process-steps {
    grid-template-columns: 1fr;
  }
}
/* ===== 汉堡菜单 ===== */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: #e2e8f0;
  border-radius: 2px;
  transition: all 0.3s ease;
}
@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(10,14,26,0.98);
    backdrop-filter: blur(20px);
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    box-shadow: 0 12px 40px rgba(0,0,0,0.5);
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links li {
    width: 100%;
  }
  .nav-links a {
    display: block;
    padding: 14px 24px;
    font-size: 15px;
    width: 100%;
  }
  .nav-links .btn-primary {
    margin: 8px 16px;
    text-align: center;
  }
}
/* 手机菜单文字提亮 */
@media (max-width: 768px) {
  .nav-links a {
    color: #e2e8f0;
  }
}
/* 修复手机菜单溢出 */
@media (max-width: 768px) {
  .navbar { position: relative; }
  .nav-links { box-sizing: border-box; left: 0; right: 0; }
  .nav-links a { box-sizing: border-box; }
}