/* ============================================
   iFolo 心流笔记 官网样式
   设计风格: Liquid Glass + 现代简约
   ============================================ */

:root {
  --theme: #69CF3D;
  --theme-dark: #5ab835;
  --theme-light: rgba(105, 207, 61, 0.1);
  --bg: #0a0a0b;
  --bg-secondary: #111113;
  --card: rgba(255, 255, 255, 0.03);
  --card-border: rgba(255, 255, 255, 0.08);
  --text: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.6);
  --text-tertiary: rgba(255, 255, 255, 0.4);
  --gradient-start: #69CF3D;
  --gradient-end: #3B82F6;
}

/* 浅色模式 */
[data-theme="light"] {
  --bg: #f8f9fa;
  --bg-secondary: #ffffff;
  --card: rgba(0, 0, 0, 0.02);
  --card-border: rgba(0, 0, 0, 0.08);
  --text: #1a1a1b;
  --text-secondary: rgba(0, 0, 0, 0.6);
  --text-tertiary: rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .navbar {
  background: transparent;
  border-bottom: 1px solid rgba(0, 0, 0, 0.02);
}

[data-theme="light"] .navbar.scrolled {
  background: rgba(255, 255, 255, 0.9);
}

[data-theme="light"] .hero-gradient {
  background: radial-gradient(ellipse at center, rgba(105, 207, 61, 0.2) 0%, transparent 60%);
}

[data-theme="light"] .phone-mockup {
  background: linear-gradient(145deg, #e8e8e8, #f5f5f5);
  box-shadow: 0 50px 100px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .phone-screen {
  background: linear-gradient(180deg, #f0f0f0 0%, #e5e5e5 100%);
}

[data-theme="light"] .showcase-card {
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .feature-icon {
  background: rgba(105, 207, 61, 0.15);
}

[data-theme="light"] .cta-section::before {
  background: radial-gradient(ellipse, rgba(105, 207, 61, 0.2) 0%, transparent 70%);
}

[data-theme="light"] .mockup-glow {
  background: radial-gradient(circle, rgba(105, 207, 61, 0.2) 0%, transparent 70%);
}

[data-theme="light"] .btn-secondary {
  background: rgba(0, 0, 0, 0.06);
  border-color: rgba(0, 0, 0, 0.12);
  color: var(--text);
}

[data-theme="light"] .btn-secondary:hover {
  background: rgba(0, 0, 0, 0.1);
  border-color: rgba(0, 0, 0, 0.18);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  margin: 0;
  padding: 0;
}

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

/* ============================================
   导航栏
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all 0.3s ease;
  background: transparent;
  backdrop-filter: blur(12px) saturate(120%);
  -webkit-backdrop-filter: blur(12px) saturate(120%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.02);
}

.navbar.scrolled {
  background: rgba(10, 10, 11, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--card-border);
}

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

.nav-logo {
  font-family: 'Quicksand', 'Nunito', sans-serif;
  font-size: 26px;
  font-weight: 700;
  text-decoration: none;
  display: flex;
  align-items: center;
  letter-spacing: -0.5px;
}

.logo-i {
  color: var(--theme);
}

.logo-folo {
  color: var(--text);
}

/* ============================================
   动态 Liquid Flow Logo (精确还原版)
   结构: 第一行圆点+长条, 第二行长条, 第三行圆点
   ============================================ */
.logo-icon-right {
  position: relative;
  width: 24px;
  height: 20px;
  display: grid;
  grid-template-columns: 6px 1fr;
  grid-template-rows: 5px 5px 5px;
  gap: 3px;
  flex-shrink: 0;
  margin-left: 8px;
  margin-top: 4px;
}

.logo-el {
  background: var(--theme);
  transition: all 0.3s ease;
}

/* 第一行：左圆点 */
.logo-dot-1 {
  grid-column: 1;
  grid-row: 1;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  align-self: center;
  animation: logoDotPulse 3s ease-in-out infinite;
}

/* 第一行：右长条 */
.logo-bar-1 {
  grid-column: 2;
  grid-row: 1;
  width: 16px;
  height: 5px;
  border-radius: 3px;
  align-self: center;
  animation: logoBarFlow 2.5s ease-in-out infinite;
  animation-delay: 0.3s;
}

/* 第二行：长条（偏左对齐） */
.logo-bar-2 {
  grid-column: 1 / 3;
  grid-row: 2;
  width: 18px;
  height: 5px;
  border-radius: 3px;
  animation: logoBarFlow 2.5s ease-in-out infinite;
  animation-delay: 0.6s;
}

/* 第三行：圆点（偏左位置，与原图一致） */
.logo-dot-2 {
  grid-column: 1 / 3;
  grid-row: 3;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  justify-self: start;
  margin-left: 8px;
  animation: logoDotPulse 3s ease-in-out infinite;
  animation-delay: 0.9s;
}

@keyframes logoDotPulse {

  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }

  50% {
    transform: scale(0.85);
    opacity: 0.7;
  }
}

@keyframes logoBarFlow {

  0%,
  100% {
    transform: scaleX(1);
    opacity: 1;
  }

  50% {
    transform: scaleX(1.08);
    opacity: 0.85;
  }
}

.nav-logo:hover .logo-el {
  filter: brightness(1.15);
  box-shadow: 0 0 12px rgba(105, 207, 61, 0.6);
}

[data-theme="light"] .nav-logo:hover .logo-el {
  filter: brightness(1.1);
  box-shadow: 0 2px 16px rgba(105, 207, 61, 0.4), 0 0 8px rgba(105, 207, 61, 0.3);
}


.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--theme);
  border-radius: 1px;
}

/* 导航下拉菜单 */
.nav-dropdown {
  position: relative;
  padding-bottom: 15px;
  margin-bottom: -15px;
}

.nav-dropdown>.nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-dropdown>.nav-link::after {
  content: '';
  width: 12px;
  height: 12px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  transition: transform 0.2s;
  position: static;
  background-color: transparent;
}

.nav-dropdown:hover>.nav-link::after {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  min-width: 180px;
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
  z-index: 9999;
}

/* 添加透明桥接区域，防止鼠标移动时 hover 状态丢失 */
.nav-dropdown-menu::before {
  content: '';
  position: absolute;
  top: -15px;
  left: 0;
  right: 0;
  height: 15px;
  background: transparent;
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(8px);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  border-radius: 8px;
  transition: all 0.2s;
}

.dropdown-item:hover {
  background: rgba(105, 207, 61, 0.1);
  color: var(--theme-color);
}

.dropdown-item i {
  width: 16px;
  text-align: center;
  font-size: 13px;
}

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

/* 主题切换按钮 */
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--card);
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.theme-toggle:hover {
  background: var(--theme-light);
  color: var(--theme);
  border-color: var(--theme);
}

.theme-toggle .icon-sun {
  display: none;
}

.theme-toggle .icon-moon {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-moon {
  display: none;
}

/* 语言切换 */
.lang-switcher {
  position: relative;
}

.lang-btn {
  padding: 8px 12px;
  border-radius: 10px;
  background: var(--card);
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}

.lang-btn:hover {
  background: var(--theme-light);
  color: var(--theme);
  border-color: var(--theme);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 8px;
  min-width: 120px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s;
  z-index: 100;
}

.lang-dropdown.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: block;
  width: 100%;
  padding: 10px 12px;
  border: none;
  background: none;
  color: var(--text-secondary);
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.2s;
  text-decoration: none;
}

.lang-option:hover {
  background: var(--theme-light);
  color: var(--theme);
}

.lang-option.active {
  color: var(--theme);
  font-weight: 600;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 100;
  position: relative;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ============================================
   按钮样式
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
}

.btn-primary {
  background: var(--theme);
  color: #000;
}

.btn-primary:hover {
  background: var(--theme-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(105, 207, 61, 0.3);
}

/* 浅色模式下绿色按钮样式 */
[data-theme="light"] .btn-primary {
  color: #fff;
}

[data-theme="light"] .btn-primary:hover {
  background: var(--theme);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 35px rgba(105, 207, 61, 0.35), 0 0 0 4px rgba(105, 207, 61, 0.15);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
  border: 1px solid var(--card-border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--card-border);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--theme);
  color: var(--theme);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
  border-radius: 16px;
}


/* ============================================
   Hero Section
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-gradient {
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 150%;
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(105, 207, 61, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 600px;
  margin-right: auto;
  padding-left: calc((100vw - 1200px) / 2 + 24px);
}

@media (max-width: 1248px) {
  .hero-content {
    padding-left: 24px;
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(105, 207, 61, 0.1);
  border: 1px solid rgba(105, 207, 61, 0.2);
  border-radius: 50px;
  font-size: 13px;
  color: var(--theme);
  margin-bottom: 24px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--theme);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

.hero-title {
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.text-gradient {
  background: linear-gradient(90deg, #69CF3D, #2DD4BF, #06B6D4, #69CF3D);
  background-size: 300% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: flowGradient 4s ease-in-out infinite;
}

@keyframes flowGradient {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

.hero-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.7;
}

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

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
}

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

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
}

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

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--card-border);
}


/* Hero Mockup */
.hero-mockup {
  position: absolute;
  right: 0;
  top: 55%;
  transform: translateY(-50%);
  width: 50%;
  display: flex;
  justify-content: center;
  z-index: 1;
}

.mockup-container {
  position: relative;
}

.mockup-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(105, 207, 61, 0.3) 0%, transparent 70%);
  filter: blur(60px);
  pointer-events: none;
}

.phone-mockup {
  width: 280px;
  height: 580px;
  background: linear-gradient(145deg, #1a1a1c, #0d0d0e);
  border-radius: 44px;
  padding: 8px;
  box-shadow:
    0 50px 100px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  position: relative;
  animation: phoneFloat 6s ease-in-out infinite;
}

@keyframes phoneFloat {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

.phone-mockup::before {
  content: '';
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: 70px;
  height: 20px;
  background: #000;
  border-radius: 20px;
  z-index: 10;
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, #1a1a1c 0%, #0f0f10 100%);
  border-radius: 36px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.placeholder-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: 700;
  color: var(--text-tertiary);
}

.placeholder-screen .logo-i {
  color: var(--theme);
}

/* ============================================
   Section 通用样式
   ============================================ */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  padding: 6px 14px;
  background: var(--theme-light);
  color: var(--theme);
  font-size: 12px;
  font-weight: 600;
  border-radius: 50px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}


/* ============================================
   Security Section - 隐私安全
   ============================================ */
.security-section {
  padding: 120px 0;
  background: var(--bg-secondary);
}

.security-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.security-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 28px;
  transition: all 0.3s ease;
}

.security-card:hover {
  border-color: rgba(105, 207, 61, 0.3);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.security-card.security-main {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 48px;
  background: linear-gradient(135deg, rgba(105, 207, 61, 0.05) 0%, rgba(105, 207, 61, 0.02) 100%);
  border-color: rgba(105, 207, 61, 0.2);
}

.security-icon-large {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, rgba(105, 207, 61, 0.15) 0%, rgba(105, 207, 61, 0.05) 100%);
  border-radius: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--theme);
}

.security-card.security-main h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
}

.security-card.security-main p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 600px;
  margin-bottom: 24px;
}

.security-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.security-badges .badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: rgba(105, 207, 61, 0.1);
  border: 1px solid rgba(105, 207, 61, 0.2);
  border-radius: 20px;
  font-size: 13px;
  color: var(--theme);
  font-weight: 500;
}

.security-icon {
  width: 48px;
  height: 48px;
  background: rgba(105, 207, 61, 0.1);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--theme);
}

.security-card h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.security-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ============================================
   Features Preview Section
   ============================================ */
.features-preview {
  padding: 120px 0;
  background: var(--bg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

/* 功能高亮大卡片 */
.feature-highlight {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 48px;
  margin-bottom: 48px;
}

.feature-highlight-content .feature-tag {
  display: inline-block;
  padding: 6px 14px;
  background: linear-gradient(135deg, rgba(105, 207, 61, 0.15) 0%, rgba(105, 207, 61, 0.05) 100%);
  color: var(--theme);
  font-size: 12px;
  font-weight: 600;
  border-radius: 20px;
  margin-bottom: 16px;
}

.feature-highlight-content h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
}

.feature-highlight-content p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.feature-list-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  list-style: none;
}

.feature-list-inline li {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-secondary);
}

.feature-list-inline li svg {
  color: var(--theme);
}

/* AI Demo 卡片 */
.feature-highlight-visual {
  display: flex;
  justify-content: center;
}

.ai-demo-card {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 24px;
  width: 100%;
  max-width: 360px;
}

.ai-demo-text {
  margin-bottom: 16px;
}

.selected-text {
  background: rgba(105, 207, 61, 0.2);
  padding: 2px 4px;
  border-radius: 4px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.ai-popup {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.ai-popup-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
  transition: all 0.2s;
}

.ai-popup-item:hover {
  background: rgba(105, 207, 61, 0.1);
  border-color: rgba(105, 207, 61, 0.3);
}

/* 增强版功能卡片 */
.feature-card-enhanced {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 32px;
  transition: all 0.3s ease;
}

.feature-card-enhanced:hover,
.feature-card-enhanced:focus-within {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* 触摸设备支持 */
@media (hover: none) {
  .feature-card-enhanced:active {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  }
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 32px;
  transition: all 0.3s ease;
}

.feature-card:hover,
.feature-card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

@media (hover: none) {
  .feature-card:active {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  }
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: rgba(105, 207, 61, 0.1);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--icon-color, var(--theme));
}

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

.feature-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 功能演示区 */
.feature-demo {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--card-border);
}

/* 双链演示 */
.link-tag {
  display: inline-block;
  padding: 6px 12px;
  background: rgba(105, 207, 61, 0.1);
  color: var(--theme);
  font-size: 12px;
  font-weight: 500;
  border-radius: 6px;
  font-family: monospace;
}

.link-arrow {
  margin: 0 8px;
  color: var(--text-tertiary);
}

/* 热力图演示 */
.heatmap-demo {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.heatmap-row {
  display: flex;
  gap: 4px;
}

.heat {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  background: rgba(105, 207, 61, 0.1);
}

.heat.l1 {
  background: rgba(105, 207, 61, 0.2);
}

.heat.l2 {
  background: rgba(105, 207, 61, 0.4);
}

.heat.l3 {
  background: rgba(105, 207, 61, 0.6);
}

.heat.l4 {
  background: rgba(105, 207, 61, 0.9);
}

/* 语音演示 */
.voice-demo {
  display: flex;
  align-items: center;
  gap: 12px;
}

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

.voice-wave span {
  width: 4px;
  height: 100%;
  background: #3B82F6;
  border-radius: 2px;
  animation: voiceWave 1s ease-in-out infinite;
}

.voice-wave span:nth-child(1) {
  animation-delay: 0s;
  height: 40%;
}

.voice-wave span:nth-child(2) {
  animation-delay: 0.1s;
  height: 70%;
}

.voice-wave span:nth-child(3) {
  animation-delay: 0.2s;
  height: 100%;
}

.voice-wave span:nth-child(4) {
  animation-delay: 0.3s;
  height: 60%;
}

.voice-wave span:nth-child(5) {
  animation-delay: 0.4s;
  height: 30%;
}

@keyframes voiceWave {

  0%,
  100% {
    transform: scaleY(1);
  }

  50% {
    transform: scaleY(0.5);
  }
}

.voice-text {
  font-size: 12px;
  color: #3B82F6;
  font-weight: 500;
}

.features-cta {
  text-align: center;
  margin-top: 48px;
}

/* ============================================
   Showcase Section
   ============================================ */
.showcase {
  padding: 120px 0;
  overflow: hidden;
}

.showcase .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.showcase-content {
  max-width: 480px;
}

.showcase-desc {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}

.showcase-list {
  list-style: none;
  margin-bottom: 32px;
}

.showcase-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  font-size: 15px;
  color: var(--text-secondary);
}

.showcase-list li svg {
  color: var(--theme);
  flex-shrink: 0;
}

.showcase-visual {
  position: relative;
  height: 600px;
}

.showcase-cards {
  position: relative;
  width: 100%;
  height: 100%;
}

.showcase-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 16px;
  transition: all 0.4s ease;
  animation: cardFloat 6s ease-in-out infinite;
}

.showcase-card:hover {
  transform: translateY(-8px) scale(1.02);
  border-color: rgba(105, 207, 61, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

@keyframes cardFloat {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-6px);
  }
}

.card-1 {
  top: 0;
  left: 0;
  width: 220px;
  animation-delay: 0s;
}

.card-2 {
  top: 20px;
  right: 0;
  width: 200px;
  animation-delay: 0.5s;
}

.card-3 {
  top: 200px;
  left: 20px;
  width: 180px;
  animation-delay: 1s;
}

.card-4 {
  top: 180px;
  right: 20px;
  width: 180px;
  animation-delay: 1.5s;
}

.card-5 {
  bottom: 80px;
  left: 60px;
  width: 200px;
  animation-delay: 2s;
}

.card-6 {
  bottom: 40px;
  right: 40px;
  width: 190px;
  animation-delay: 2.5s;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.card-dot {
  width: 8px;
  height: 8px;
  background: var(--theme);
  border-radius: 50%;
}

.card-dot.green {
  background: #69CF3D;
}

.card-dot.blue {
  background: #3B82F6;
}

.card-dot.purple {
  background: var(--theme);
}

.card-dot.orange {
  background: #F59E0B;
}

.card-dot.yellow {
  background: #EAB308;
}

.card-title {
  font-size: 13px;
  font-weight: 600;
}

/* 每日回顾卡片 */
.review-item {
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.review-item:last-child {
  border-bottom: none;
}

.review-date {
  font-size: 10px;
  color: var(--text-tertiary);
}

.review-text {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 热力图卡片 */
.card-heatmap {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.heatmap-row {
  display: flex;
  gap: 3px;
}

.heat-cell {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  background: rgba(105, 207, 61, 0.1);
  transition: transform 0.2s;
}

.heat-cell:hover {
  transform: scale(1.2);
}

.heat-cell.l1 {
  background: rgba(105, 207, 61, 0.2);
}

.heat-cell.l2 {
  background: rgba(105, 207, 61, 0.4);
}

.heat-cell.l3 {
  background: rgba(105, 207, 61, 0.6);
}

.heat-cell.l4 {
  background: rgba(105, 207, 61, 0.9);
}

.heatmap-stats {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  font-size: 11px;
  color: var(--text-tertiary);
}

.heatmap-stats strong {
  color: var(--theme);
}

.heatmap-stats .streak {
  color: #F59E0B;
}

/* 标签云卡片 */
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  padding: 5px 10px;
  background: rgba(105, 207, 61, 0.1);
  color: var(--theme);
  font-size: 11px;
  border-radius: 12px;
  transition: all 0.2s;
}

.tag:hover {
  background: rgba(105, 207, 61, 0.2);
  transform: scale(1.05);
}

.tag.tag-lg {
  font-size: 13px;
  padding: 6px 12px;
}

.tag.tag-sm {
  font-size: 10px;
  padding: 4px 8px;
}

/* 知识网络卡片 */
.card-network {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.network-svg {
  width: 100%;
  height: 80px;
}

.network-svg .node-center {
  animation: nodePulse 2s ease-in-out infinite;
}

.network-svg .node {
  animation: nodeFloat 3s ease-in-out infinite;
}

@keyframes nodePulse {

  0%,
  100% {
    r: 8;
    opacity: 1;
  }

  50% {
    r: 10;
    opacity: 0.8;
  }
}

@keyframes nodeFloat {

  0%,
  100% {
    opacity: 0.6;
  }

  50% {
    opacity: 1;
  }
}

.network-label {
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 8px;
}

/* AI 摘要卡片 */
.card-ai {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ai-typing {
  position: relative;
}

.ai-typing p {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}

.ai-cursor {
  display: inline-block;
  width: 2px;
  height: 14px;
  background: var(--theme);
  margin-left: 2px;
  animation: blink 1s infinite;
}

@keyframes blink {

  0%,
  50% {
    opacity: 1;
  }

  51%,
  100% {
    opacity: 0;
  }
}

.ai-tags {
  display: flex;
  gap: 6px;
}

.ai-tag {
  font-size: 10px;
  padding: 3px 8px;
  background: rgba(245, 158, 11, 0.1);
  color: #F59E0B;
  border-radius: 8px;
}

/* 提醒卡片 */
.card-reminder {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.reminder-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  background: rgba(234, 179, 8, 0.05);
  border-radius: 8px;
}

.reminder-item.active {
  background: rgba(234, 179, 8, 0.1);
  border: 1px solid rgba(234, 179, 8, 0.2);
}

.reminder-icon {
  font-size: 16px;
  animation: bellRing 2s ease-in-out infinite;
}

@keyframes bellRing {

  0%,
  100% {
    transform: rotate(0);
  }

  10%,
  30% {
    transform: rotate(-10deg);
  }

  20%,
  40% {
    transform: rotate(10deg);
  }

  50% {
    transform: rotate(0);
  }
}

.reminder-content {
  display: flex;
  flex-direction: column;
}

.reminder-title {
  font-size: 12px;
  font-weight: 500;
}

.reminder-time {
  font-size: 10px;
  color: #EAB308;
}

/* 装饰元素 */
.showcase-decorations {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.deco-circle {
  position: absolute;
  border-radius: 50%;
  background: var(--theme);
  opacity: 0.1;
  animation: decoFloat 8s ease-in-out infinite;
}

.deco-1 {
  width: 60px;
  height: 60px;
  top: 10%;
  right: 30%;
  animation-delay: 0s;
}

.deco-2 {
  width: 40px;
  height: 40px;
  bottom: 20%;
  left: 10%;
  animation-delay: 2s;
  background: #3B82F6;
}

.deco-line {
  position: absolute;
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--theme), transparent);
  border-radius: 2px;
  opacity: 0.2;
}

.deco-3 {
  bottom: 30%;
  right: 10%;
  transform: rotate(-20deg);
  animation: decoLine 6s ease-in-out infinite;
}

@keyframes decoFloat {

  0%,
  100% {
    transform: translateY(0) scale(1);
    opacity: 0.1;
  }

  50% {
    transform: translateY(-15px) scale(1.1);
    opacity: 0.2;
  }
}

@keyframes decoLine {

  0%,
  100% {
    opacity: 0.1;
    transform: rotate(-20deg) translateX(0);
  }

  50% {
    opacity: 0.3;
    transform: rotate(-20deg) translateX(10px);
  }
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  padding: 6px 12px;
  background: rgba(105, 207, 61, 0.1);
  color: var(--theme);
  font-size: 12px;
  border-radius: 20px;
}


/* ============================================
   Testimonials Section
   ============================================ */
.testimonials {
  padding: 120px 0;
  background: var(--bg-secondary);
  overflow: hidden;
}

/* 统计数据 */
.testimonials-stats {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.testimonials-stats .stat-item {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-value-row {
  display: flex;
  align-items: baseline;
  justify-content: center;
}

.testimonials-stats .stat-number {
  font-size: 48px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--theme), #4CAF50);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
  line-height: 1;
}

.testimonials-stats .stat-suffix {
  font-size: 32px;
  font-weight: 700;
  color: var(--theme);
  margin-left: 2px;
}

.testimonials-stats .stat-label {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 8px;
}

.stat-divider {
  width: 1px;
  height: 50px;
  background: var(--card-border);
}

/* 轮播容器 */
.testimonials-carousel {
  margin-top: 48px;
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  position: relative;
  z-index: 1;
  padding-top: 20px;
}

.testimonials-track {
  display: flex;
  gap: 24px;
  animation: scrollTestimonials 40s linear infinite;
  width: max-content;
}

.testimonials-track:hover {
  animation-play-state: paused;
}

@keyframes scrollTestimonials {
  0% {
    transform: translateX(0);
  }

  100% {
    transform: translateX(calc(-380px * 9 - 24px * 9));
  }
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 28px;
  min-width: 360px;
  max-width: 380px;
  position: relative;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  cursor: pointer;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  border-color: var(--theme);
  z-index: 10;
}

.testimonial-quote {
  position: absolute;
  top: 16px;
  right: 24px;
  font-size: 64px;
  font-weight: 700;
  color: var(--theme);
  opacity: 0.15;
  line-height: 1;
  font-family: Georgia, serif;
}

.testimonial-stars {
  display: flex;
  gap: 2px;
  margin-bottom: 16px;
  color: #F59E0B;
  font-size: 14px;
  letter-spacing: 2px;
}

.testimonial-text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
  min-height: 80px;
}

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

.author-avatar {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--theme), var(--gradient-end));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 16px;
  color: white;
  flex-shrink: 0;
}

.author-info {
  flex: 1;
}

.author-info h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 2px;
}

.author-info span {
  font-size: 12px;
  color: var(--text-tertiary);
}

.testimonial-date {
  font-size: 12px;
  color: var(--text-tertiary);
  opacity: 0.6;
}

/* App Store 评分徽章 */
.appstore-rating {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-top: 48px;
  padding: 24px 40px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.rating-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
}

.rating-badge svg {
  color: var(--text);
}

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

.score-number {
  font-size: 36px;
  font-weight: 800;
  color: var(--text);
}

.score-stars {
  color: #F59E0B;
  font-size: 16px;
  letter-spacing: 2px;
}

.score-count {
  font-size: 12px;
  color: var(--text-tertiary);
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
  padding: 120px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(105, 207, 61, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

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

.cta-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.cta-desc {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: 80px 0 40px;
  border-top: 1px solid var(--card-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand {
  max-width: 280px;
}

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

.footer-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 40px;
  height: 40px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all 0.2s;
  font-size: 18px;
  text-decoration: none;
}

.social-link:hover {
  background: var(--theme);
  border-color: var(--theme);
  color: #000;
}

.footer-column h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text);
}

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

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

.footer-links a {
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-bottom {
  display: flex;
  flex-direction: column;
  padding-top: 32px;
  border-top: 1px solid var(--card-border);
}

.footer-bottom-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-copyright {
  font-size: 13px;
  color: var(--text-tertiary);
}

.footer-copyright a {
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-copyright a:hover {
  color: var(--theme);
}

.footer-icp {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 8px;
}

.footer-icp-left {
  display: flex;
  align-items: center;
  gap: 2px;
}

.footer-icp .icp-shield {
  flex-shrink: 0;
  vertical-align: middle;
  position: relative;
  top: -1px;
}

.footer-icp a {
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-security {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-tertiary);
}

.footer-security svg {
  flex-shrink: 0;
  opacity: 0.7;
  position: relative;
  top: -1px;
}


/* ============================================
   响应式布局
   ============================================ */
@media (max-width: 1024px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: 140px;
  }

  .hero-content {
    padding-left: 0;
    margin: 0 auto;
  }

  .hero-mockup {
    position: relative;
    width: 100%;
    transform: none;
    top: auto;
    right: auto;
    margin-top: 60px;
  }

  .ipad-mockup {
    display: none;
  }

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

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

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

  .showcase .container {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .showcase-content {
    max-width: 100%;
    text-align: center;
  }

  .showcase-list {
    display: inline-block;
    text-align: left;
  }

  .showcase-visual {
    height: 400px;
  }

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

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--card-border);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  }

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

  .mobile-menu-btn {
    display: flex;
  }

  .mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .nav-actions .btn {
    display: none;
  }

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

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

  .feature-highlight {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 32px;
  }

  .feature-highlight-content h3 {
    font-size: 22px;
  }

  .feature-list-inline {
    gap: 12px;
  }

  .features-grid-3 {
    grid-template-columns: 1fr;
  }

  .testimonials-stats {
    gap: 24px;
  }

  .testimonials-stats .stat-number {
    font-size: 36px;
  }

  .testimonials-stats .stat-suffix {
    font-size: 24px;
  }

  .stat-divider {
    display: none;
  }

  .testimonials-carousel {
    margin-top: 32px;
  }

  .testimonial-card {
    min-width: 300px;
    max-width: 320px;
  }

  @keyframes scrollTestimonials {
    0% {
      transform: translateX(0);
    }

    100% {
      transform: translateX(calc(-320px * 9 - 24px * 9));
    }
  }

  .appstore-rating {
    flex-direction: column;
    gap: 16px;
    padding: 20px;
  }

  .score-number {
    font-size: 28px;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }

  .stat-divider {
    width: 40px;
    height: 1px;
  }

  .phone-mockup {
    width: 240px;
    height: 500px;
  }

  .showcase-visual {
    height: 350px;
  }

  .showcase-card {
    padding: 16px;
  }

  .card-1 {
    width: 200px;
  }

  .card-2 {
    width: 180px;
    top: 40px;
  }

  .card-3 {
    width: 170px;
    left: 20px;
  }

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

  .footer-brand {
    max-width: 100%;
  }

  .footer-social {
    justify-content: center;
  }

  .footer-column h4 {
    margin-bottom: 16px;
  }

  .footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px 16px;
  }

  .footer-links li {
    margin-bottom: 0;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .footer-legal {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 32px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .btn-lg {
    padding: 14px 24px;
    font-size: 14px;
  }

  .section-title {
    font-size: 28px;
  }

  .feature-card {
    padding: 24px;
  }

  .cta-title {
    font-size: 28px;
  }
}

/* ============================================
   动画效果
   ============================================ */
@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-float {
  animation: float 6s ease-in-out infinite;
}

.animate-fade-in {
  animation: fadeInUp 0.8s ease forwards;
}

/* 滚动显示动画 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}


/* ============================================
   Page Header
   ============================================ */
.page-header {
  padding: 160px 0 80px;
  text-align: center;
  position: relative;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at center top, rgba(105, 207, 61, 0.1) 0%, transparent 60%);
  pointer-events: none;
}

.page-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.page-desc {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   Feature Detail Sections
   ============================================ */
.feature-detail {
  padding: 100px 0;
}

.feature-detail.alt {
  background: var(--bg-secondary);
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.feature-row.reverse {
  direction: rtl;
}

.feature-row.reverse>* {
  direction: ltr;
}

.feature-icon-lg {
  width: 72px;
  height: 72px;
  background: rgba(105, 207, 61, 0.1);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--icon-color, var(--theme));
}

.feature-content h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
}

.feature-content>p {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.7;
}

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

.feature-list li {
  padding: 10px 0;
  padding-left: 28px;
  position: relative;
  color: var(--text-secondary);
  font-size: 15px;
}

.feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--theme);
  font-weight: 600;
}

/* Feature Visual Demos */
.feature-visual {
  display: flex;
  justify-content: center;
}

.feature-card-demo {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 24px;
  width: 100%;
  max-width: 360px;
}

.demo-toolbar {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--card-border);
}

.tool-btn {
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
  color: var(--text-secondary);
}

.tool-btn.active {
  background: var(--theme);
  color: #000;
}

.demo-content p {
  margin-bottom: 12px;
  font-size: 15px;
  color: var(--text-secondary);
}

.demo-content .highlight {
  background: rgba(245, 158, 11, 0.3);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Voice Demo */
.voice-demo {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 32px;
  text-align: center;
  width: 100%;
  max-width: 320px;
}

.voice-wave {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-bottom: 20px;
}

.voice-wave span {
  width: 4px;
  height: 40px;
  background: var(--theme);
  border-radius: 2px;
  animation: wave 1s ease-in-out infinite;
}

.voice-wave span:nth-child(2) {
  animation-delay: 0.1s;
}

.voice-wave span:nth-child(3) {
  animation-delay: 0.2s;
}

.voice-wave span:nth-child(4) {
  animation-delay: 0.3s;
}

.voice-wave span:nth-child(5) {
  animation-delay: 0.4s;
}

@keyframes wave {

  0%,
  100% {
    height: 20px;
  }

  50% {
    height: 40px;
  }
}

.voice-text {
  color: var(--theme);
  font-weight: 600;
  margin-bottom: 12px;
}

.voice-transcription {
  color: var(--text-secondary);
  font-size: 14px;
  font-style: italic;
}

/* AI Demo */
.ai-demo {
  display: flex;
  align-items: center;
  gap: 20px;
}

.ai-input {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 20px;
  color: var(--text-tertiary);
  font-size: 14px;
  width: 120px;
}

.ai-arrow {
  font-size: 24px;
  color: var(--theme);
}

.ai-output {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 20px;
  flex: 1;
}

.ai-summary {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.ai-tags {
  display: flex;
  gap: 8px;
}

.ai-tags span {
  padding: 4px 10px;
  background: var(--theme-light);
  color: var(--theme);
  font-size: 12px;
  border-radius: 20px;
}

/* More Features */
.more-features {
  padding: 120px 0;
  background: var(--bg-secondary);
}

@media (max-width: 768px) {

  .feature-row,
  .feature-row.reverse {
    grid-template-columns: 1fr;
    gap: 40px;
    direction: ltr;
  }

  .feature-content {
    text-align: center;
  }

  .feature-list {
    display: inline-block;
    text-align: left;
  }

  .ai-demo {
    flex-direction: column;
  }

  .ai-input {
    width: 100%;
  }

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


/* ============================================
   Pricing Section
   ============================================ */
.pricing-section {
  padding: 40px 0 120px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.pricing-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 32px;
  position: relative;
}

.pricing-card.featured {
  border-color: var(--theme);
  transform: scale(1.05);
  box-shadow: 0 20px 60px rgba(105, 207, 61, 0.15);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--theme);
  color: #000;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.pricing-header {
  text-align: center;
  margin-bottom: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--card-border);
}

.pricing-header h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 16px;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
  margin-bottom: 8px;
}

.price-amount {
  font-size: 48px;
  font-weight: 700;
  color: var(--text);
}

.price-period {
  font-size: 16px;
  color: var(--text-secondary);
}

.pricing-desc {
  font-size: 14px;
  color: var(--text-tertiary);
}

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

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  font-size: 14px;
  color: var(--text-secondary);
}

.pricing-features li.included svg {
  color: var(--theme);
}

.pricing-features li.excluded {
  color: var(--text-tertiary);
}

.pricing-features li.excluded svg {
  color: var(--text-tertiary);
}

.pricing-features li.highlight {
  color: var(--text);
  font-weight: 500;
}

.btn-block {
  width: 100%;
}

/* FAQ Section */
.faq-section {
  padding: 80px 0 120px;
  background: var(--bg-secondary);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 24px;
}

.faq-item h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
}

.faq-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .pricing-card.featured {
    transform: none;
    order: -1;
  }
}

@media (max-width: 768px) {
  .faq-grid {
    grid-template-columns: 1fr;
  }
}


/* ============================================
   Download Page
   ============================================ */
.download-hero {
  padding: 160px 0 100px;
  position: relative;
}

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

.download-content {
  max-width: 500px;
}

.download-buttons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 40px 0;
  max-width: 500px;
}

.download-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 24px;
  background: #000;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 14px;
  color: #fff;
  text-decoration: none;
  transition: all 0.3s;
}

[data-theme="light"] .download-btn {
  background: #000;
  border-color: #000;
}

.download-btn:hover {
  background: #222;
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.download-btn.macos-coming {
  background: transparent;
  border: 2px dashed var(--card-border);
  color: var(--text-secondary);
  cursor: default;
}

[data-theme="light"] .download-btn.macos-coming {
  background: transparent;
  border: 2px dashed rgba(0, 0, 0, 0.2);
  color: var(--text-secondary);
}

.download-btn.macos-coming:hover {
  transform: none;
  background: transparent;
}

.download-btn.macos-coming svg {
  opacity: 0.5;
}

.download-btn-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.download-label {
  font-size: 12px;
  opacity: 0.8;
}

.download-store {
  font-size: 18px;
  font-weight: 600;
}

.download-store.coming-soon {
  color: var(--theme);
  font-size: 16px;
}

@media (max-width: 600px) {
  .download-buttons {
    grid-template-columns: 1fr;
  }
}

.download-info {
  display: flex;
  gap: 40px;
}

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

.info-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.info-label {
  font-size: 13px;
  color: var(--text-tertiary);
}

.download-visual {
  display: flex;
  justify-content: center;
}

.qr-code-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 40px;
  text-align: center;
}

.qr-placeholder {
  width: 160px;
  height: 160px;
  background: #fff;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: #000;
}

.qr-code-card p {
  color: var(--text-secondary);
  font-size: 14px;
}

/* Device Support */
.device-support {
  padding: 80px 0;
  background: var(--bg-secondary);
}

.devices-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 600px;
  margin: 0 auto;
}

.device-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 32px;
  text-align: center;
}

.device-icon {
  color: var(--theme);
  margin-bottom: 16px;
}

.device-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.device-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Version Info */
.version-info {
  padding: 80px 0;
}

.version-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 32px;
  max-width: 600px;
  margin: 0 auto;
}

.version-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--card-border);
}

.version-number {
  font-size: 20px;
  font-weight: 700;
  color: var(--theme);
}

.version-date {
  font-size: 14px;
  color: var(--text-tertiary);
}

.version-content h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}

.version-content ul {
  list-style: none;
}

.version-content li {
  padding: 8px 0;
  padding-left: 24px;
  position: relative;
  font-size: 14px;
  color: var(--text-secondary);
}

.version-content li::before {
  content: '•';
  position: absolute;
  left: 8px;
  color: var(--theme);
}

@media (max-width: 768px) {
  .download-hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .download-content {
    max-width: 100%;
  }

  .download-info {
    justify-content: center;
  }

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


/* ============================================
   About Page
   ============================================ */

/* 图标设计说明区块 */
.about-icon-design {
  padding: 80px 0;
  background: var(--bg);
}

.icon-design-content {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 60px;
  align-items: start;
  max-width: 1000px;
  margin: 0 auto;
}

.icon-showcase {
  position: sticky;
  top: 120px;
}

.app-icon-display {
  background: linear-gradient(135deg, rgba(105, 207, 61, 0.1), rgba(105, 207, 61, 0.05));
  border-radius: 32px;
  padding: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.app-icon-img {
  width: 180px;
  height: 180px;
  border-radius: 40px;
  box-shadow: 0 20px 60px rgba(105, 207, 61, 0.3);
  transition: transform 0.3s ease;
}

.app-icon-img:hover {
  transform: scale(1.05);
}

.icon-design-info h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
}

.icon-intro {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
}

.design-aspects {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 40px;
}

.design-aspect {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  transition: all 0.3s ease;
}

.design-aspect:hover {
  border-color: var(--theme);
  box-shadow: 0 8px 32px rgba(105, 207, 61, 0.15);
}

.aspect-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--theme), #4CAF50);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.aspect-icon i {
  color: white;
  font-size: 20px;
}

.aspect-content h4 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.aspect-content p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.color-meaning {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 24px;
}

.color-meaning h4 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.color-meaning h4 i {
  color: var(--theme);
}

.color-chips {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.color-chip {
  display: flex;
  align-items: center;
  gap: 16px;
}

.color-swatch {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  flex-shrink: 0;
}

.color-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.color-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  font-family: 'SF Mono', 'Monaco', monospace;
}

.color-desc {
  font-size: 14px;
  color: var(--text-secondary);
}

@media (max-width: 900px) {
  .icon-design-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .icon-showcase {
    position: static;
    display: flex;
    justify-content: center;
  }

  .app-icon-display {
    max-width: 280px;
  }
}

@media (max-width: 600px) {
  .about-icon-design {
    padding: 60px 0;
  }

  .icon-design-info h2 {
    font-size: 26px;
  }

  .design-aspect {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .aspect-icon {
    margin: 0 auto;
  }

  .color-chip {
    flex-direction: column;
    text-align: center;
  }
}

/* 品牌介绍区块 */
.about-brand {
  padding: 80px 0;
  background: var(--bg-secondary);
}

.brand-intro {
  max-width: 900px;
  margin: 0 auto;
}

.brand-name-breakdown {
  text-align: center;
  margin-bottom: 60px;
}

.brand-name-breakdown h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 40px;
}

.name-parts {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.name-part {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.name-part .letter {
  font-family: 'Quicksand', sans-serif;
  font-size: 64px;
  font-weight: 700;
  color: var(--theme);
  line-height: 1;
}

.letter-meaning {
  text-align: center;
}

.letter-meaning h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.letter-meaning p {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 180px;
}

.brand-concept {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 40px;
  text-align: center;
}

.brand-concept h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 20px;
}

.concept-text {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 700px;
  margin: 0 auto 32px;
}

.concept-highlights {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
}

.highlight-item i {
  color: var(--theme);
  font-size: 18px;
}

@media (max-width: 768px) {
  .name-parts {
    flex-direction: column;
    gap: 32px;
  }

  .name-part .letter {
    font-size: 48px;
  }

  .concept-highlights {
    flex-direction: column;
    gap: 16px;
  }

  .brand-concept {
    padding: 24px;
  }
}

.about-story {
  padding: 80px 0;
}

.story-content {
  max-width: 700px;
  margin: 0 auto;
}

.story-content h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 24px;
  text-align: center;
}

.story-content p {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-values {
  padding: 80px 0;
  background: var(--bg-secondary);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.value-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 32px;
  text-align: center;
}

.value-icon {
  width: 64px;
  height: 64px;
  background: var(--theme-light);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--theme);
}

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

.value-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.about-team {
  padding: 80px 0;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
}

.team-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 28px 20px;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 16px;
  object-fit: cover;
  border: 3px solid var(--card-border);
  background: linear-gradient(135deg, var(--theme), var(--gradient-end));
}

img.team-avatar {
  display: block;
}

.team-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 4px;
}

.team-role {
  font-size: 14px;
  color: var(--theme);
  margin-bottom: 12px;
}

.team-bio {
  font-size: 14px;
  color: var(--text-secondary);
}

.about-contact {
  padding: 80px 0;
  background: var(--bg-secondary);
}

.contact-cta {
  text-align: center;
  max-width: 500px;
  margin: 0 auto;
}

.contact-cta h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
}

.contact-cta p {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

@media (max-width: 768px) {

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

  .team-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .team-grid {
    grid-template-columns: 1fr;
  }
}


/* ============================================
   Contact Page
   ============================================ */
.contact-section {
  padding: 40px 0 120px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 24px;
}

.contact-icon {
  width: 48px;
  height: 48px;
  background: var(--theme-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--theme);
  margin-bottom: 16px;
}

.contact-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.contact-card p {
  font-size: 15px;
  color: var(--text);
  margin-bottom: 4px;
}

.contact-note {
  font-size: 13px;
  color: var(--text-tertiary);
}

.contact-form-wrapper {
  display: flex;
  align-items: flex-start;
}

.contact-form-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 40px;
  width: 100%;
}

.contact-form-card h2 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 32px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 15px;
  color: var(--text);
  font-family: inherit;
  transition: border-color 0.2s;
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-tertiary);
}

.form-group select {
  cursor: pointer;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .contact-form-card {
    padding: 24px;
  }
}


/* ============================================
   Legal Pages (Privacy, Terms)
   ============================================ */
.legal-page {
  padding: 140px 0 80px;
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
}

.legal-content h1 {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 8px;
}

.legal-date {
  font-size: 14px;
  color: var(--text-tertiary);
  margin-bottom: 48px;
}

.legal-content h2 {
  font-size: 22px;
  font-weight: 600;
  margin-top: 40px;
  margin-bottom: 16px;
  color: var(--text);
}

.legal-content p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.legal-content ul {
  margin-bottom: 16px;
  padding-left: 24px;
}

.legal-content li {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 8px;
}


/* ============================================
   Cookie 设置弹窗
   ============================================ */
.cookie-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.cookie-modal.active {
  opacity: 1;
  visibility: visible;
}

.cookie-modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.cookie-modal-content {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  max-width: 520px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px) scale(0.95);
  transition: transform 0.3s ease;
}

.cookie-modal.active .cookie-modal-content {
  transform: translateY(0) scale(1);
}

.cookie-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 24px 16px;
  border-bottom: 1px solid var(--card-border);
}

.cookie-modal-header h3 {
  font-size: 20px;
  font-weight: 600;
}

.cookie-close-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--card);
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text-secondary);
}

.cookie-close-btn:hover {
  background: var(--theme);
  border-color: var(--theme);
  color: white;
}

.cookie-modal-body {
  padding: 24px;
}

.cookie-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.cookie-option {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--card-border);
}

.cookie-option:last-child {
  border-bottom: none;
}

.cookie-option-info h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.cookie-option-info p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Toggle 开关 */
.cookie-toggle {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
  flex-shrink: 0;
}

.cookie-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--card-border);
  border-radius: 26px;
  transition: 0.3s;
}

.toggle-slider::before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background: white;
  border-radius: 50%;
  transition: 0.3s;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.cookie-toggle input:checked+.toggle-slider {
  background: var(--theme);
}

.cookie-toggle input:checked+.toggle-slider::before {
  transform: translateX(22px);
}

.cookie-toggle.disabled .toggle-slider {
  cursor: not-allowed;
  opacity: 0.6;
}

.cookie-modal-footer {
  display: flex;
  gap: 12px;
  padding: 16px 24px 24px;
  border-top: 1px solid var(--card-border);
}

.cookie-modal-footer .btn {
  flex: 1;
  padding: 12px 16px;
  font-size: 14px;
}

/* Cookie 横幅 */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: var(--bg);
  border-top: 1px solid var(--card-border);
  padding: 16px 24px;
  transform: translateY(100%);
  transition: transform 0.4s ease;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
}

.cookie-banner.active {
  transform: translateY(0);
}

/* 当 cookie 横幅显示时，给 body 添加底部 padding 防止遮挡内容 */
body.cookie-banner-visible {
  padding-bottom: 80px;
}

/* 当 cookie 横幅显示时，返回顶部按钮上移 */
body.cookie-banner-visible .back-to-top {
  bottom: 100px;
}

@media (max-width: 768px) {
  body.cookie-banner-visible .back-to-top {
    bottom: 140px;
  }
}

.cookie-banner-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.cookie-banner-content p {
  font-size: 14px;
  color: var(--text-secondary);
  flex: 1;
  min-width: 300px;
}

.cookie-banner-content a {
  color: var(--theme);
  text-decoration: underline;
}

.cookie-banner-actions {
  display: flex;
  gap: 12px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

/* Toast 提示 */
.toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--bg);
  border: 1px solid var(--card-border);
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 14px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 10001;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.success {
  border-left: 4px solid var(--theme);
}

@media (max-width: 768px) {
  .cookie-modal-content {
    width: 95%;
    max-height: 85vh;
  }

  .cookie-modal-footer {
    flex-direction: column;
  }

  .cookie-banner-content {
    flex-direction: column;
    text-align: center;
  }

  .cookie-banner-content p {
    min-width: auto;
  }
}


/* ============================================
   微信二维码弹窗
   ============================================ */
.wechat-modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.wechat-modal.active {
  opacity: 1;
  visibility: visible;
}

.wechat-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.wechat-modal-content {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 40px;
  max-width: 360px;
  width: 90%;
  text-align: center;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.wechat-modal.active .wechat-modal-content {
  transform: scale(1);
}

.wechat-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--card);
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.wechat-close-btn:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: #EF4444;
  color: #EF4444;
}

.wechat-icon {
  margin-bottom: 16px;
}

.wechat-modal-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.wechat-modal-content>p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.wechat-qr-placeholder {
  margin-bottom: 16px;
}

.qr-code-box {
  width: 200px;
  height: 200px;
  background: #fff;
  border-radius: 12px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #999;
  font-size: 14px;
}

.qr-code-box small {
  font-size: 11px;
  margin-top: 4px;
  color: #bbb;
}

.qr-code-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 12px;
}

.wechat-id {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-top: 8px;
}

/* 社交图标换行 */
.footer-social {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}


/* ============================================
   返回顶部按钮
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 999;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--theme);
  border-color: var(--theme);
  transform: translateY(-4px);
}

.back-to-top svg {
  color: var(--text-secondary);
  transition: color 0.3s ease;
}

.back-to-top:hover svg {
  color: white;
}

@media (max-width: 768px) {
  .back-to-top {
    bottom: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
  }
}

.footer-legal {
  display: flex;
  gap: 24px;
}

.footer-legal a {
  font-size: 13px;
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* ============================================
   Subscription Philosophy Section
   ============================================ */
.subscription-philosophy {
  padding: 40px 0 60px;
}

.philosophy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 20px;
}

.philosophy-main {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, rgba(105, 207, 61, 0.08) 0%, rgba(105, 207, 61, 0.02) 100%);
  border: 1px solid rgba(105, 207, 61, 0.2);
  border-radius: 20px;
  padding: 40px;
  text-align: center;
  margin-bottom: 8px;
}

.philosophy-icon {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, rgba(105, 207, 61, 0.15) 0%, rgba(105, 207, 61, 0.05) 100%);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--theme);
}

.philosophy-main h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
}

.philosophy-main p {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.6;
}

.philosophy-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 24px;
  transition: all 0.3s ease;
}

.philosophy-card:hover {
  border-color: rgba(105, 207, 61, 0.3);
  transform: translateY(-2px);
}

.philosophy-card-icon {
  width: 48px;
  height: 48px;
  background: rgba(105, 207, 61, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--theme);
}

.philosophy-card h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.philosophy-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Pricing Grid - keep default 3 columns */
.pricing-trial {
  text-align: center;
  font-size: 13px;
  color: var(--text-tertiary);
  margin-top: 12px;
}

/* Pricing Guarantees */
.pricing-guarantees {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--card-border);
}

.guarantee-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.guarantee-item svg {
  color: var(--theme);
  flex-shrink: 0;
}

@media (max-width: 900px) {
  .philosophy-grid {
    grid-template-columns: 1fr 1fr;
  }

  .philosophy-main {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .philosophy-grid {
    grid-template-columns: 1fr;
  }

  .pricing-guarantees {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }
}

/* ============================================
   Phone Carousel - 手机截图轮播
   ============================================ */
.phone-carousel {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.phone-carousel .carousel-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.8s ease-in-out;
}

.phone-carousel .carousel-img.active {
  opacity: 1;
}