/* ========== 全局重置与基础 ========== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #6C5CE7;
  --primary-light: #A29BFE;
  --primary-dark: #5A4BD1;
  --accent: #FF6B6B;
  --accent-light: #FF8E8E;
  --telecom: #3B82F6;
  --mobile: #10B981;
  --unicom: #F59E0B;
  --bg: #F8F9FE;
  --white: #FFFFFF;
  --text: #1A1A2E;
  --text-secondary: #6B7280;
  --text-light: #9CA3AF;
  --border: #E5E7EB;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: inherit;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  text-decoration: none;
  gap: 2px;
}

.btn span {
  font-size: 1.05rem;
}

.btn small {
  font-size: 0.75rem;
  font-weight: 400;
  opacity: 0.85;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 4px 20px rgba(108, 92, 231, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(108, 92, 231, 0.5);
}

.btn-secondary {
  background: rgba(108, 92, 231, 0.1);
  color: var(--primary);
  border: 2px solid rgba(108, 92, 231, 0.2);
}

.btn-secondary:hover {
  background: rgba(108, 92, 231, 0.15);
  border-color: var(--primary);
}

.btn-large {
  padding: 18px 40px;
  font-size: 1.1rem;
}

.btn-white {
  background: white;
  color: var(--primary);
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.2);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  padding: 14px 40px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
}

.btn-outline:hover {
  background: var(--primary);
  color: white;
}

.btn-apply {
  width: 100%;
  padding: 14px;
  border-radius: 12px;
  font-size: 1.05rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(108, 92, 231, 0.35);
}

.btn-apply:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(108, 92, 231, 0.5);
}

.btn-block {
  width: 100%;
}

/* ========== 导航栏 ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
  padding: 10px 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.3rem;
}

.logo-icon {
  font-size: 1.6rem;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 8px;
  align-items: center;
}

.nav-menu a {
  padding: 8px 18px;
  border-radius: 50px;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
  color: var(--text-secondary);
}

.nav-menu a:hover {
  color: var(--primary);
  background: rgba(108, 92, 231, 0.08);
}

.nav-cta {
  background: var(--primary) !important;
  color: white !important;
  padding: 10px 24px !important;
  box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
}

.nav-cta:hover {
  background: var(--primary-dark) !important;
  transform: translateY(-1px);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ========== Hero区域 ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #F0EDFF 0%, #E8F4FD 50%, #FFF5F5 100%);
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(108,92,231,0.12) 0%, transparent 70%);
}

.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,107,107,0.08) 0%, transparent 70%);
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  background: rgba(255,255,255,0.9);
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.badge-hot {
  color: var(--accent);
  font-weight: 700;
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.highlight {
  display: block;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-bottom: 36px;
}

.stat-item {
  text-align: center;
}

.stat-num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary);
}

.stat-num span {
  font-size: 1rem;
  font-weight: 600;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-top: 2px;
}

.hero-btns {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
}

.hero-trust {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.trust-icon {
  color: var(--primary);
  font-weight: 700;
}

/* Hero手机模型 */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-mockup {
  position: relative;
  width: 280px;
  height: 560px;
}

.phone-screen {
  position: relative;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  border-radius: 40px;
  border: 4px solid #333;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  z-index: 1;
}

.phone-glow {
  position: absolute;
  inset: -20px;
  border-radius: 50px;
  background: radial-gradient(circle, rgba(108,92,231,0.3) 0%, transparent 70%);
  z-index: 0;
  animation: glow 3s ease-in-out infinite;
}

@keyframes glow {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

.screen-content {
  padding: 50px 24px 24px;
  text-align: center;
  color: white;
}

.signal-bars {
  display: flex;
  justify-content: center;
  gap: 3px;
  margin-bottom: 16px;
}

.signal-bars span {
  width: 4px;
  border-radius: 2px;
  background: rgba(255,255,255,0.3);
}

.signal-bars span:nth-child(1) { height: 6px; }
.signal-bars span:nth-child(2) { height: 10px; }
.signal-bars span:nth-child(3) { height: 14px; }
.signal-bars span:nth-child(4) { height: 18px; background: #4ADE80; }

.5g-badge {
  display: inline-block;
  padding: 4px 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 40px;
}

.data-amount {
  margin-bottom: 8px;
}

.data-num {
  font-size: 4.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #60A5FA, #A78BFA);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.data-unit {
  font-size: 1.8rem;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
}

.data-label {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 30px;
}

.data-progress {
  width: 100%;
  height: 8px;
  background: rgba(255,255,255,0.1);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #60A5FA, #A78BFA);
  border-radius: 4px;
  transition: width 1s ease;
}

/* 浮动卡片 */
.floating-cards {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
}

.float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: rgba(255,255,255,0.95);
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  animation: float 4s ease-in-out infinite;
}

.card-1 {
  top: 10%;
  right: -10%;
  animation-delay: 0s;
}

.card-2 {
  top: 45%;
  left: -15%;
  animation-delay: 1.3s;
}

.card-3 {
  bottom: 15%;
  right: -5%;
  animation-delay: 2.6s;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}

.card-icon {
  font-size: 1.2rem;
}

/* 滚动提示 */
.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-light);
  z-index: 1;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--text-light);
  border-bottom: 2px solid var(--text-light);
  transform: rotate(45deg);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: rotate(45deg) translateY(0); }
  40% { transform: rotate(45deg) translateY(-8px); }
  60% { transform: rotate(45deg) translateY(-4px); }
}

/* ========== 通用Section ========== */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-tag {
  display: inline-block;
  padding: 6px 20px;
  background: rgba(108, 92, 231, 0.1);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

/* ========== 优势特点 ========== */
.features {
  padding: 100px 0;
  background: var(--white);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  padding: 36px 28px;
  border-radius: var(--radius);
  background: var(--bg);
  transition: var(--transition);
  border: 1px solid transparent;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(108, 92, 231, 0.1);
}

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(108,92,231,0.1), rgba(255,107,107,0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ========== 套餐产品 ========== */
.products {
  padding: 100px 0;
}

.operator-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 10px 28px;
  border: 2px solid var(--border);
  border-radius: 50px;
  background: var(--white);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn:hover {
  border-color: var(--primary-light);
  color: var(--primary);
}

.tab-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-card {
  position: relative;
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.card-badge {
  position: absolute;
  top: 16px;
  right: -30px;
  background: linear-gradient(135deg, var(--accent), #FF4757);
  color: white;
  padding: 6px 40px;
  font-size: 0.8rem;
  font-weight: 700;
  transform: rotate(45deg);
  z-index: 10;
}

.card-header {
  padding: 28px 24px 20px;
  color: white;
  position: relative;
  overflow: hidden;
}

.card-header::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.08;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 10px,
    rgba(255,255,255,0.1) 10px,
    rgba(255,255,255,0.1) 20px
  );
}

.card-header.telecom {
  background: linear-gradient(135deg, #3B82F6, #1D4ED8);
}

.card-header.mobile {
  background: linear-gradient(135deg, #10B981, #059669);
}

.card-header.unicom {
  background: linear-gradient(135deg, #F59E0B, #D97706);
}

.operator-tag {
  display: inline-block;
  padding: 3px 12px;
  background: rgba(255,255,255,0.2);
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.product-name {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.product-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.price-num {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1;
}

.price-unit {
  font-size: 0.9rem;
  font-weight: 500;
  opacity: 0.85;
}

.card-body {
  padding: 24px;
}

.data-highlight {
  text-align: center;
  padding: 16px;
  background: var(--bg);
  border-radius: 12px;
  margin-bottom: 20px;
}

.data-value {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary);
}

.data-value span {
  font-size: 1rem;
  font-weight: 600;
}

.data-desc {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-top: 2px;
}

.feature-list {
  list-style: none;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.92rem;
  color: var(--text-secondary);
  border-bottom: 1px dashed var(--border);
}

.feature-list li:last-child {
  border-bottom: none;
}

.check {
  color: #10B981;
  font-weight: 700;
  font-size: 1rem;
}

.card-footer {
  padding: 0 24px 24px;
  text-align: center;
}

.apply-count {
  display: block;
  margin-top: 10px;
  font-size: 0.8rem;
  color: var(--text-light);
}

/* 性价比标签 */
.product-card.cheap .card-header {
  background: linear-gradient(135deg, #8B5CF6, #6D28D9);
}

.products-more {
  text-align: center;
  margin-top: 48px;
}

.products-more .arrow {
  display: inline-block;
  transition: transform 0.3s;
}

.products-more .btn-outline:hover .arrow {
  transform: translateX(4px);
}

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

.process-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.step {
  text-align: center;
  padding: 32px 24px;
  border-radius: var(--radius);
  background: var(--bg);
  width: 220px;
  position: relative;
}

.step-num {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 2.5rem;
  font-weight: 800;
  color: rgba(108, 92, 231, 0.08);
  line-height: 1;
}

.step-icon {
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.step h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.step-arrow {
  font-size: 1.5rem;
  color: var(--primary-light);
  font-weight: 700;
}

/* ========== 用户评价 ========== */
.testimonials {
  padding: 100px 0;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-card {
  padding: 32px;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.stars {
  color: #FBBF24;
  font-size: 1.1rem;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.testimonial-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
  font-style: italic;
}

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

.user-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.user-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.user-meta {
  font-size: 0.8rem;
  color: var(--text-light);
}

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

.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

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

.faq-item:hover {
  border-color: var(--primary-light);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  background: var(--bg);
  transition: var(--transition);
}

.faq-question:hover {
  background: rgba(108, 92, 231, 0.05);
}

.faq-icon {
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--primary);
  transition: transform 0.3s;
}

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

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

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}

.faq-answer p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ========== CTA区域 ========== */
.cta-section {
  padding: 100px 0;
}

.cta-box {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-lg);
  padding: 64px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
}

.cta-box::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: 10%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-content h2 {
  font-size: 2rem;
  font-weight: 800;
  color: white;
  margin-bottom: 10px;
}

.cta-content p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.85);
}

.cta-box .btn {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

/* ========== 页脚 ========== */
.footer {
  padding: 60px 0 30px;
  background: #1A1A2E;
  color: rgba(255,255,255,0.7);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo {
  color: white;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer-links h4,
.footer-contact h4 {
  color: white;
  font-weight: 700;
  margin-bottom: 16px;
  font-size: 1rem;
}

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

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: white;
}

.footer-contact p {
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 0.85rem;
}

.footer-notice {
  margin-top: 6px;
  font-size: 0.8rem;
  opacity: 0.5;
}

/* ========== 移动端固定按钮 ========== */
.mobile-fixed-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px 16px;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(10px);
  box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
  z-index: 999;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }

  .hero-title {
    font-size: 2.6rem;
  }

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

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

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

  .hero-visual {
    order: -1;
  }

  .phone-mockup {
    width: 220px;
    height: 440px;
  }

  .data-num {
    font-size: 3.5rem;
  }

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

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

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

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

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 16px;
    z-index: 100;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu a {
    font-size: 1.2rem;
    padding: 12px 32px;
  }

  .mobile-menu-btn {
    display: flex;
    z-index: 101;
  }

  .hero {
    padding: 100px 0 60px;
    min-height: auto;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-desc {
    font-size: 1rem;
  }

  .hero-stats {
    gap: 24px;
  }

  .stat-num {
    font-size: 1.8rem;
  }

  .hero-btns {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-btns .btn {
    width: 100%;
  }

  .floating-cards {
    display: none;
  }

  .scroll-indicator {
    display: none;
  }

  .section-title {
    font-size: 1.8rem;
  }

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

  .products-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto;
  }

  .process-steps {
    flex-direction: column;
  }

  .step-arrow {
    transform: rotate(90deg);
  }

  .step {
    width: 100%;
    max-width: 320px;
  }

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

  .cta-box {
    flex-direction: column;
    text-align: center;
    padding: 40px 28px;
  }

  .cta-content h2 {
    font-size: 1.6rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .mobile-fixed-cta {
    display: block;
  }

  body {
    padding-bottom: 70px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.7rem;
  }

  .hero-badge {
    font-size: 0.8rem;
  }

  .hero-stats {
    gap: 16px;
  }

  .stat-num {
    font-size: 1.5rem;
  }

  .operator-tabs {
    gap: 8px;
  }

  .tab-btn {
    padding: 8px 18px;
    font-size: 0.85rem;
  }

  .price-num {
    font-size: 2.2rem;
  }

  .data-value {
    font-size: 1.8rem;
  }
}