/* ============================================
   抹鲸 App - MobyLink Product Landing Page
   明亮新颖主题样式
   ============================================ */

/* ============================================
   CSS Variables - 明亮主题
   ============================================ */
:root {
  /* 明亮背景色 */
  --bg-light: #FAFBFF;
  --bg-white: #FFFFFF;
  --bg-subtle: #F0F4FF;
  
  /* 品牌色 */
  --primary: #4A90E2;
  --accent-blue: #4A90E2;
  --accent-blue-light: #6BA5E7;
  --accent-blue-dark: #3A7BD5;
  --accent-pink: #FF8FA3;
  --accent-pink-light: #FFB4C2;
  --accent-coral: #FF6B6B;
  --accent-purple: #9B7EDE;
  
  /* 文字色 */
  --text-primary: #1A1A2E;
  --text-secondary: #4A4A68;
  --text-muted: #8A8AA3;
  --text-light: #B0B0C3;
  
  /* 卡片效果 */
  --card-bg: rgba(255, 255, 255, 0.9);
  --card-border: rgba(74, 144, 226, 0.15);
  --card-shadow: 0 8px 32px rgba(74, 144, 226, 0.12);
  
  /* 字体 */
  --font-base: 'Fredoka', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'ZCOOL XiaoWei', serif;
  --font-brand: 'Fredoka', 'Noto Sans SC', sans-serif;
  
  /* 动画 */
  --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-base);
  background: var(--bg-light);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* 柔和的背景渐变 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(ellipse at 20% 20%, rgba(74, 144, 226, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(255, 143, 163, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(155, 126, 222, 0.05) 0%, transparent 60%);
  pointer-events: none;
  z-index: -1;
}

/* ============================================
   Typography
   ============================================ */
h1 {
  font-family: var(--font-brand);
  font-weight: 700;
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  background: linear-gradient(to bottom left, var(--accent-pink-light) 0%, var(--accent-blue) 60%, var(--accent-blue) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.01em;
  line-height: 1.1;
  filter: drop-shadow(0 4px 12px rgba(74, 144, 226, 0.2));
}

h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  color: var(--text-primary);
  margin-bottom: 1rem;
  letter-spacing: 0.02em;
  position: relative;
  display: inline-block;
}

h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-pink));
  border-radius: 2px;
}

h3 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

/* ============================================
   Layout
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: 6rem 1.5rem;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--transition-smooth), 
              transform 0.8s var(--transition-smooth);
}

section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   Reveal Animations
   ============================================ */
[data-reveal] {
  opacity: 0;
  transition: all 0.8s var(--transition-smooth);
}

[data-reveal="fade-up"] {
  transform: translateY(30px);
}

[data-reveal="fade-down"] {
  transform: translateY(-30px);
}

[data-reveal="fade-left"] {
  transform: translateX(30px);
}

[data-reveal="fade-right"] {
  transform: translateX(-30px);
}

[data-reveal].visible {
  opacity: 1;
  transform: translate(0, 0);
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.5rem 0;
  transition: all 0.4s var(--transition-smooth);
}

.header.scrolled {
  padding: 0.8rem 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}

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

.header-logo {
  display: grid;
  place-items: center start;
  text-decoration: none;
  position: relative;
}

.logo-unit {
  grid-area: 1 / 1;
  display: flex;
  align-items: start;
  gap: 0.75rem;
  transition: all 0.5s var(--transition-smooth);
}

.logo-unit img {
  height: 32px;
  width: 32px;
  border-radius: 8px;
}

.logo-unit span {
  font-family: var(--font-brand);
  font-weight: 700;
  font-size: 1.4rem;
  background: linear-gradient(to bottom left, var(--accent-pink-light) 0%, var(--accent-blue) 60%, var(--accent-blue) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.unit-en {
  opacity: 1;
  transform: translateY(0);
}

.unit-cn {
  opacity: 0;
  transform: translateY(1.5rem);
  pointer-events: none;
}

.header.scrolled .unit-en {
  opacity: 0;
  transform: translateY(-1.5rem);
  pointer-events: none;
}

.header.scrolled .unit-cn {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav a {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.3s ease;
  position: relative;
}

.nav a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s ease;
}

.nav a:not(.nav-cta):hover::after {
  width: 100%;
}

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

.nav-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff !important;
  padding: 0.6rem 1.4rem;
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.nav-cta:hover {
  opacity: 0.9;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem 2rem 6rem;
  position: relative;
  overflow: hidden;
  opacity: 1;
  transform: none;
}

.hero-bg-elements {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.hero-blob {
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60vw;
  height: 60vw;
  max-width: 900px;
  max-height: 900px;
  background: radial-gradient(circle, rgba(74, 144, 226, 0.1) 0%, transparent 70%);
  filter: blur(80px);
  border-radius: 50%;
  z-index: 0;
  animation: blobFloat 20s infinite ease-in-out;
}

@keyframes blobFloat {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  50% { transform: translate(-48%, -52%) scale(1.1); }
}

.hero-content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 800px;
  width: 100%;
  z-index: 10;
}

.logo-wrapper {
  position: relative;
  margin-bottom: 2rem;
}

.logo-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 140%;
  height: 140%;
  background: radial-gradient(circle, 
    rgba(74, 144, 226, 0.4) 0%, 
    rgba(74, 144, 226, 0.2) 30%,
    rgba(255, 180, 194, 0.1) 60%, 
    rgba(155, 126, 222, 0) 80%
  );
  transform: translate(-50%, -50%);
  opacity: 0.5;
  filter: blur(30px);
  animation: logoGlow 6s infinite ease-in-out;
}

@keyframes logoGlow {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.3; }
  50% { transform: translate(-50%, -50%) scale(1.1); opacity: 0.6; }
}

.hero-logo {
  position: relative;
  width: 100px;
  height: 100px;
  border-radius: 24px;
  box-shadow: 0 20px 50px rgba(74, 144, 226, 0.2);
  z-index: 2;
}

.hero-title {
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  padding-left: 0.3em;
}

.hero-tagline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  font-size: clamp(1.5rem, 5vw, 2.8rem);
  color: var(--text-primary);
  font-weight: 700;
  margin-bottom: 2rem;
}

.tagline-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-pink);
  border-radius: 50%;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  line-height: 1.8;
  max-width: 620px;
}

.hero-description p {
  margin: 0;
}

.hero-description .highlight {
  color: var(--accent-blue-dark);
  font-weight: 600;
  padding: 0 0.2rem;
  background: linear-gradient(120deg, rgba(74, 144, 226, 0.1) 0%, rgba(74, 144, 226, 0.1) 100%);
  background-repeat: no-repeat;
  background-size: 100% 40%;
  background-position: 0 85%;
}

.hero-action {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.btn-primary {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--primary);
  color: white;
  padding: 1rem 2.8rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  box-shadow: 0 10px 30px rgba(74, 144, 226, 0.3);
  transition: all 0.3s var(--transition-smooth);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(74, 144, 226, 0.4);
}


/* 移动端响应式 */
@media (max-width: 768px) {
  .header-container {
    padding: 0 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 44px;
  }

  .header-logo {
    place-items: center; /* 移动端完全居中 */
  }

  .logo-unit {
    justify-content: center; /* 确保 unit 内部元素也是居中的 */
  }

  .hero {
    padding: 6rem 1.5rem 4rem;
  }
  
  .hero-tagline {
    gap: 0.5rem;
    font-size: 2rem;
  }
  
  .tagline-dot {
    display: none;
  }
  
  .hero-description {
    font-size: 1rem;
  }
  
  .nav {
    display: none;
  }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 8px 24px rgba(74, 144, 226, 0.3); }
  50% { box-shadow: 0 8px 40px rgba(74, 144, 226, 0.5); }
}

/* ============================================
   App Mockups Section
   ============================================ */
.mockups-section {
  padding: 8rem 1.5rem;
  position: relative;
  overflow: hidden;
  background: white;
}

.section-header {
  text-align: center;
  margin-bottom: 5rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-family: var(--font-brand);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2rem;
  display: inline-block;
  position: relative;
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-top: 1rem;
}

.mockups-container {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 3rem;
  position: relative;
  z-index: 1;
}

.iphone-frame-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  transition: all 0.5s var(--transition-smooth);
}

.iphone-frame-wrapper:hover {
  transform: translateY(-20px) scale(1.02);
}

.iphone-frame-wrapper.highlighted {
  margin-top: 0;
}

.iphone-frame {
  width: 280px;
  height: 580px;
  background: linear-gradient(145deg, #1a1a1a 0%, #2d2d2d 100%);
  border-radius: 45px;
  padding: 12px;
  box-shadow: 
    0 50px 100px rgba(0, 0, 0, 0.15),
    0 20px 40px rgba(0, 0, 0, 0.1),
    inset 0 0 0 2px rgba(255, 255, 255, 0.1);
  position: relative;
}

/* 动态岛 */
.iphone-frame::before {
  content: '';
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 28px;
  background: #000;
  border-radius: 20px;
  z-index: 10;
}

.iphone-screen {
  width: 100%;
  height: 100%;
  background: var(--bg-white);
  border-radius: 38px;
  overflow: hidden;
  position: relative;
}

/* 状态栏 */
.screen-statusbar {
  height: 50px;
  background: var(--bg-white);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 0 18px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.screen-content {
  padding: 16px;
  height: calc(100% - 50px);
  overflow: hidden;
}

.mockup-label {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 1.1rem;
  background: white;
  padding: 0.5rem 1.5rem;
  border-radius: 50px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--card-border);
}

.chat-screen { background: #FFFFFF; }
.booking-screen { background: var(--bg-white); }
.map-screen { background: #FFFFFF; }

/* ============================================
   Mockup 1: AI 对话页
   ============================================ */
.chat-screen .screen-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.chat-avatar {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.chat-name {
  font-weight: 600;
  color: var(--text-primary);
}

.chat-status {
  font-size: 12px;
  color: var(--accent-blue);
}

.chat-messages {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.chat-bubble {
  max-width: 85%;
  padding: 12px 16px;
  border-radius: 18px;
  font-size: 14px;
  line-height: 1.5;
}

.chat-bubble.ai {
  background: var(--bg-subtle);
  color: var(--text-primary);
  align-self: flex-start;
  border-bottom-left-radius: 6px;
}

.chat-bubble.user {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-dark));
  color: white;
  align-self: flex-end;
  border-bottom-right-radius: 6px;
}

/* 语音消息气泡 */
.voice-bubble {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-subtle);
  padding: 14px 18px;
  border-radius: 20px;
  border-bottom-left-radius: 6px;
}

.voice-play {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.voice-waveform {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 24px;
}

.voice-bar {
  width: 3px;
  background: var(--accent-blue);
  border-radius: 2px;
  animation: waveform 1.2s ease-in-out infinite;
}

.voice-bar:nth-child(1) { height: 8px; animation-delay: 0s; }
.voice-bar:nth-child(2) { height: 16px; animation-delay: 0.1s; }
.voice-bar:nth-child(3) { height: 12px; animation-delay: 0.2s; }
.voice-bar:nth-child(4) { height: 20px; animation-delay: 0.3s; }
.voice-bar:nth-child(5) { height: 14px; animation-delay: 0.4s; }
.voice-bar:nth-child(6) { height: 18px; animation-delay: 0.5s; }
.voice-bar:nth-child(7) { height: 10px; animation-delay: 0.6s; }
.voice-bar:nth-child(8) { height: 16px; animation-delay: 0.7s; }

@keyframes waveform {
  0%, 100% { transform: scaleY(1); }
  50% { transform: scaleY(0.5); }
}

.voice-duration {
  font-size: 12px;
  color: var(--text-muted);
  margin-left: auto;
}

/* ============================================
   Mockup 2: 预约页
   ============================================ */
.booking-screen .screen-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.booking-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.booking-cards {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.booking-card {
  background: var(--bg-white);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all 0.3s var(--transition-smooth);
  animation: card-float 4s ease-in-out infinite;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.booking-card:nth-child(1) { animation-delay: 0s; }
.booking-card:nth-child(2) { animation-delay: 0.5s; }
.booking-card:nth-child(3) { animation-delay: 1s; }

@keyframes card-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

.booking-card.selected {
  border-color: var(--accent-blue);
  background: linear-gradient(135deg, rgba(74, 144, 226, 0.08), rgba(155, 126, 222, 0.05));
}

.booking-date {
  width: 48px;
  height: 48px;
  background: var(--bg-subtle);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid rgba(74, 144, 226, 0.1);
}

.booking-weekday {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-blue);
}

.booking-info {
  flex: 1;
}

.booking-time {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 15px;
}

.booking-slots {
  font-size: 12px;
  color: var(--text-muted);
}

.booking-check {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.booking-card.selected .booking-check {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
  color: white;
}

.booking-card.selected .booking-check::after {
  content: '✓';
  font-size: 14px;
  font-weight: bold;
}

/* ============================================
   Mockup 3: 咖啡馆地图页
   ============================================ */
.map-screen .screen-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.map-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.map-container {
  background: #FFFFFF;
  border-radius: 20px;
  height: 320px;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(74, 144, 226, 0.1);
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.02);
}

/* 简化的深圳地图轮廓 */
.map-outline {
  position: absolute;
  inset: 10px;
  opacity: 0.15;
  width: 100%;
  height: 100%;
}

/* 咖啡馆标记点 */
.map-marker {
  position: absolute;
  width: 32px;
  height: 32px;
  background: white;
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 5;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.map-marker::after {
  content: '☕';
  transform: rotate(45deg);
  font-size: 16px;
}

.map-marker.active {
  background: var(--accent-blue);
  animation: marker-pulse 1.5s ease-in-out infinite;
  box-shadow: 0 8px 20px rgba(0, 112, 243, 0.2);
}

.map-marker.active::after {
  content: '☕';
}

@keyframes marker-pulse {
  0%, 100% { 
    transform: rotate(-45deg) scale(1);
    box-shadow: 0 8px 20px rgba(0, 112, 243, 0.2);
  }
  50% { 
    transform: rotate(-45deg) scale(1.1);
    box-shadow: 0 12px 25px rgba(0, 112, 243, 0.3);
  }
}

/* 标记位置 - 深圳各区 (整体向左上方大幅挪动) */
.map-marker.baoan { top: 20%; left: 12%; }
.map-marker.shekou { top: 52%; left: 15%; }
.map-marker.nanshan { top: 38%; left: 28%; }
.map-marker.oct { top: 28%; left: 40%; }
.map-marker.futian { top: 32%; left: 60%; }
.map-marker.luohu { top: 28%; left: 78%; }

/* 地图底部信息 */
.map-info {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  background: white;
  border-radius: 12px;
  padding: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.map-info-icon {
  width: 40px;
  height: 40px;
  background: rgba(0, 112, 243, 0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.map-info-text {
  flex: 1;
}

.map-info-name {
  font-weight: 600;
  font-size: 14px;
  color: var(--text-primary);
}

.map-info-address {
  font-size: 12px;
  color: var(--text-muted);
}

/* ============================================
   Features Section Redesign - Alternating Rows
   ============================================ */
.features-section {
  padding: 8rem 1.5rem;
  background: #f4f6f8;
  overflow: hidden;
}

.features-section .container {
  max-width: 1000px;
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 8rem;
  margin-top: 5rem;
}

.feature-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6rem;
}

.feature-item.reverse {
  flex-direction: row-reverse;
}

.feature-info {
  flex: 1;
  max-width: 500px;
}

.feature-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.feature-visual-inner {
  position: relative;
  width: 280px;
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.feature-large-icon {
  font-size: 8rem;
  filter: drop-shadow(0 20px 40px rgba(74, 144, 226, 0.2));
  z-index: 2;
  transition: transform 0.5s var(--transition-smooth);
}

.feature-item:hover .feature-large-icon {
  transform: scale(1.1) rotate(5deg);
}

.visual-blob {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(74, 144, 226, 0.1), rgba(155, 126, 222, 0.1));
  border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
  z-index: 1;
  animation: blob-bounce 10s ease-in-out infinite;
}

.visual-blob.variant-1 {
  background: linear-gradient(135deg, rgba(255, 143, 163, 0.15), rgba(255, 192, 203, 0.1));
  border-radius: 60% 40% 30% 70% / 50% 30% 70% 50%;
}

.visual-blob.variant-2 {
  background: linear-gradient(135deg, rgba(15, 192, 252, 0.1), rgba(123, 104, 238, 0.1));
  border-radius: 30% 70% 70% 30% / 50% 60% 40% 50%;
}

.visual-blob.variant-3 {
  background: linear-gradient(135deg, rgba(252, 114, 147, 0.1), rgba(255, 160, 122, 0.1));
  border-radius: 70% 30% 50% 50% / 30% 30% 70% 70%;
}

@keyframes blob-bounce {
  0%, 100% { border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%; transform: translate(-50%, -50%) scale(1); }
  33% { border-radius: 70% 30% 50% 50% / 30% 30% 70% 70%; transform: translate(-50%, -52%) scale(1.05); }
  66% { border-radius: 30% 70% 70% 30% / 50% 60% 40% 50%; transform: translate(-48%, -50%) scale(0.95); }
}

.feature-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.feature-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.feature-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-blue);
  letter-spacing: 1.5px;
  background: rgba(74, 144, 226, 0.08);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  margin-bottom: 1.2rem;
}

/* ============================================
   Social Proof Section Redesign
   ============================================ */
.proof-section {
  position: relative;
  background: #f8faff;
  padding: 8rem 1.5rem;
  overflow: hidden;
  color: var(--text-primary);
  text-align: center;
}

.proof-section h2 {
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.proof-bg-blobs {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.proof-blob {
  position: absolute;
  filter: blur(80px);
  opacity: 0.12;
  border-radius: 50%;
}

.blob-1 {
  width: 400px;
  height: 400px;
  background: var(--accent-blue);
  top: -100px;
  right: -100px;
}

.blob-2 {
  width: 350px;
  height: 350px;
  background: var(--accent-pink);
  bottom: -100px;
  left: -50px;
}

.proof-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 5rem;
  position: relative;
  z-index: 1;
}

.proof-card {
  background: var(--bg-white);
  border: 1px solid rgba(74, 144, 226, 0.15);
  border-radius: 32px;
  padding: 2.5rem 2rem;
  transition: all 0.4s var(--transition-smooth);
  box-shadow: 0 10px 30px rgba(74, 144, 226, 0.05);
}

.proof-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 30px 60px rgba(74, 144, 226, 0.15);
  border: 2px solid var(--accent-blue) !important; /* 强制统一 Hover 边框颜色 */
  padding: calc(2.5rem - 1px) calc(2rem - 1px);
}

.proof-card-icon {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.stat-number {
  font-family: var(--font-brand);
  font-size: 3rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.stat-detail {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Companies Redesign */
.companies-container {
  margin-top: 2.5rem;
  z-index: 1;
  position: relative;
}

.companies-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-weight: 600;
}

.companies-marquee {
  width: 100%;
  overflow: hidden;
  white-space: nowrap;
  position: relative;
  mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent);
}

.marquee-content {
  display: flex;
  width: max-content;
  animation: marquee 40s linear infinite;
  padding: 10px 0;
}

.marquee-content span {
  flex-shrink: 0;
  display: block;
  padding: 0.7rem 1.8rem;
  margin: 0 0.8rem; /* 保持 margin 也可以，但 inline-block 的空白字符会被 flex 忽略从而消除误差 */
  background: var(--bg-white);
  border-radius: 50px;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
  border: 1px solid rgba(0, 0, 0, 0.03);
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@media (max-width: 900px) {
  .proof-cards-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto 4rem;
  }
}

/* ============================================
   CTA Section Redesign - 公众号引流
   ============================================ */
.cta-section {
  padding: 8rem 1.5rem;
  position: relative;
  overflow: hidden;
}

.cta-bg-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(74, 144, 226, 0.15) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
}

.cta-card {
  max-width: 1000px;
  margin: 0 auto;
  background: linear-gradient(135deg, white, #f8faff);
  border: 1px solid rgba(74, 144, 226, 0.1);
  border-radius: 40px;
  padding: 4rem;
  display: flex;
  align-items: center;
  gap: 4rem;
  box-shadow: 0 40px 100px rgba(74, 144, 226, 0.1);
  position: relative;
  z-index: 1;
  overflow: hidden; /* 确保背景元素不溢出 */
}

.card-bg-whale {
  position: absolute;
  right: -50px;
  bottom: -40px;
  font-size: 20rem;
  opacity: 0.1;
  transform: rotate(-15deg);
  filter: blur(2px);
  pointer-events: none;
  z-index: 0;
}

.card-bg-whale.top-left {
  right: auto;
  bottom: auto;
  left: 5%;
  top: -5%;
  font-size: 10rem;
  transform: rotate(15deg);
}

.cta-content {
  flex: 1;
  text-align: left;
}

.cta-title {
  font-family: var(--font-brand);
  font-size: 2.8rem;
  color: var(--text-primary);
  margin-bottom: 2rem;
  position: relative;
  display: inline-block;
}

.cta-title::after {
  left: 0;
  transform: none;
}

.cta-desc {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 3rem;
}

.cta-desc p {
  margin: 0;
}

.cta-desc .highlight {
  color: var(--accent-blue-dark);
  font-weight: 600;
  padding: 0 0.2rem;
  background: linear-gradient(120deg, rgba(74, 144, 226, 0.1) 0%, rgba(74, 144, 226, 0.1) 100%);
  background-repeat: no-repeat;
  background-size: 100% 40%;
  background-position: 0 85%;
}

.cta-status {
  display: inline;
}

.cta-features {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.cta-feat-item {
  background: rgba(74, 144, 226, 0.05);
  color: var(--accent-blue);
  padding: 0.6rem 1.2rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid rgba(74, 144, 226, 0.1);
}

.cta-visual {
  flex-shrink: 0;
  text-align: center;
}

.qrcode-container {
  position: relative;
  min-height: 280px; /* 约等于二维码+文字的高度 */
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
}

.qrcode-wrapper {
  background: white;
  padding: 1.2rem;
  border-radius: 32px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  align-items: center;
  border: 1px solid var(--card-border);
  position: absolute;
  height: fit-content;
  top: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.4s var(--transition-smooth);
}

.qrcode-wrapper.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  position: relative; /* 激活时占据文档流 */
}

.qrcode-image {
  width: 180px;
  height: 180px;
  display: block;
  border-radius: 12px;
}

.qrcode-hint {
  margin-top: 1rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.qrcode-tabs {
  background: var(--bg-subtle);
  padding: 0.4rem;
  border-radius: 100px;
  display: inline-flex;
  gap: 0.5rem;
  border: 1px solid var(--card-border);
}

.qr-tab {
  border: none;
  background: transparent;
  padding: 0.6rem 1.5rem;
  border-radius: 100px;
  font-family: var(--font-base);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
}

.qr-tab.active {
  background: var(--bg-white);
  color: var(--primary);
  box-shadow: 0 4px 12px rgba(74, 144, 226, 0.15);
}

.qr-tab:hover:not(.active) {
  color: var(--primary);
}

@media (max-width: 900px) {
  .cta-card {
    flex-direction: column;
    padding: 3.5rem 1.5rem;
    text-align: center;
    gap: 3rem;
  }
  
  .cta-content {
    text-align: center;
  }
  
  .cta-features {
    justify-content: center;
  }
  
  .cta-title {
    font-size: 2.2rem;
  }

  .cta-title::after {
    left: 50%;
    transform: translateX(-50%);
  }

  .cta-desc {
    font-size: 1.1rem;
    margin-bottom: 2rem;
  }
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--bg-white);
  padding: 3rem 1.5rem;
  text-align: center;
  border-top: 1px solid var(--card-border);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.3s ease;
}

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

.footer-copyright {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-icp {
  margin-top: 0.5rem;
}

.footer-icp a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
}

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

/* ============================================
   Floating Decorations
   ============================================ */
.floating-shapes {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.floating-shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
}

.shape-1 {
  width: 500px;
  height: 500px;
  background: rgba(74, 144, 226, 0.25);
  top: -10%;
  right: -10%;
  animation: float-slow 20s ease-in-out infinite;
}

.shape-2 {
  width: 400px;
  height: 400px;
  background: rgba(255, 143, 163, 0.2);
  bottom: 10%;
  left: -10%;
  animation: float-slow 25s ease-in-out infinite reverse;
}

.shape-3 {
  width: 300px;
  height: 300px;
  background: rgba(155, 126, 222, 0.2);
  top: 40%;
  right: 5%;
  animation: float-slow 18s ease-in-out infinite;
}

@keyframes float-slow {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(30px, -40px); }
  50% { transform: translate(-20px, 30px); }
  75% { transform: translate(25px, 15px); }
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
  .mockups-container {
    gap: 1.5rem;
  }
  
  .iphone-frame {
    width: 240px;
    height: 500px;
  }
  
  .cta-card {
    padding: 3rem;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  section {
    padding: 4rem 1rem;
  }
  
  .section-header {
    margin-bottom: 3rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .hero {
    padding: 5rem 1rem 3rem;
  }
  
  .hero-logo {
    width: 100px;
    height: 100px;
  }
  
  .mockups-container {
    flex-direction: row;
    justify-content: flex-start;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    width: 100vw;
    margin-left: -2.5rem; /* 抵消 section (1rem) + container (1.5rem) 的边距 */
    padding: 1.5rem 2.5rem 3rem;
    gap: 1.5rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  
  .mockups-container::-webkit-scrollbar {
    display: none;
  }
  
  .iphone-frame-wrapper {
    flex: 0 0 auto;
    width: 280px;
    scroll-snap-align: center;
  }
  
  .iphone-frame-wrapper.highlighted {
    margin-bottom: 0;
  }
  
  .iphone-frame {
    width: 280px;
    height: 580px;
  }
  
  .proof-section {
    padding: 4rem 1rem;
  }
  
  .stat-number {
    font-size: 2.5rem;
  }
  
  .companies-marquee {
    mask-image: linear-gradient(to right, transparent, black 5%, black 95%, transparent);
  }
  
  .marquee-content span {
    padding: 0.5rem 1.2rem;
    font-size: 0.85rem;
  }
  
  .features-section {
    text-align: center;
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .cta-section {
    text-align: center;
    padding-left: 0;
    padding-right: 0;
    background: var(--bg-white);
  }

  .cta-section .container {
    padding: 0;
  }
  
  .features-list {
    gap: 3.5rem;
  }
  
  .feature-item,
  .feature-item.reverse {
    flex-direction: column;
    gap: 2rem;
    text-align: center;
  }
  
  .feature-visual-inner {
    width: 200px;
    height: 200px;
  }
  
  .feature-large-icon {
    font-size: 5rem;
  }
  
  .feature-title {
    font-size: 1.8rem;
  }
  
  .feature-desc {
    font-size: 1rem;
  }
  
  .cta-card {
    flex-direction: column;
    padding: 0 1.5rem; /* 取消上下 padding，因为 section 已经有 padding */
    border: none;
    background: transparent;
    box-shadow: none;
    gap: 3rem;
  }
  
  .cta-content {
    text-align: center;
  }
  
  .cta-title {
    font-size: 2rem;
  }

  .cta-title::after {
    left: 50%;
    transform: translateX(-50%);
  }

  .cta-desc {
    font-size: 1rem;
    margin-bottom: 1.5rem;
  }

  .cta-status {
    display: block;
    margin-right: 0;
  }

  .cta-features {
    justify-content: center;
    gap: 0.8rem;
  }

  .cta-feat-item {
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
  }
}

@media (max-width: 480px) {
  .section-title {
    font-size: 1.75rem;
  }
  
  .iphone-frame {
    width: 260px;
    height: 540px;
    border-radius: 40px;
  }
  
  .iphone-screen {
    border-radius: 34px;
  }
  
  .qrcode-image {
    width: 160px;
    height: 160px;
  }
}

/* ============================================
   Prefers Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}