/* ============================================================
   码灵通 官网 - 全局样式表
   科技现代风格 | 响应式适配 | BEM 命名规范
   ============================================================ */

/* ==================== CSS 变量定义 ==================== */
:root {
  /* --- 主题色系：科技蓝/紫渐变 --- */
  --color-primary:        #6366F1;
  --color-primary-light:  #818CF8;
  --color-primary-dark:   #4F46E5;
  --color-secondary:      #8B5CF6;
  --color-accent:         #06B6D4;

  /* --- 渐变 --- */
  --gradient-primary:     linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
  --gradient-hero:        linear-gradient(135deg, #0F0F23 0%, #1A1040 40%, #0F1A3A 100%);
  --gradient-card:        linear-gradient(135deg, rgba(99,102,241,0.08) 0%, rgba(139,92,246,0.08) 100%);
  --gradient-cta:         linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #06B6D4 100%);

  /* --- 背景色 --- */
  --bg-primary:           #0B0B1A;
  --bg-secondary:         #111128;
  --bg-card:              #16163A;
  --bg-card-hover:        #1E1E4A;
  --bg-glass:             rgba(15, 15, 35, 0.75);

  /* --- 文字色 --- */
  --text-primary:         #F1F1F7;
  --text-secondary:       #A0A0C0;
  --text-muted:           #6B6B8A;
  --text-white:           #FFFFFF;

  /* --- 边框 --- */
  --border-color:         rgba(255, 255, 255, 0.08);
  --border-glow:          rgba(99, 102, 241, 0.3);

  /* --- 阴影 --- */
  --shadow-sm:            0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md:            0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg:            0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow:          0 0 30px rgba(99, 102, 241, 0.25);
  --shadow-card-hover:    0 12px 40px rgba(99, 102, 241, 0.2);

  /* --- 圆角 --- */
  --radius-sm:            8px;
  --radius-md:            12px;
  --radius-lg:            16px;
  --radius-xl:            24px;
  --radius-full:          9999px;

  /* --- 间距 --- */
  --section-padding:      100px 0;
  --container-max:        1200px;
  --container-padding:    0 24px;

  /* --- 过渡 --- */
  --transition-fast:      0.2s ease;
  --transition-base:      0.3s ease;
  --transition-slow:      0.5s ease;

  /* --- 字体 --- */
  --font-family:          'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono:            'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  /* --- 导航栏 --- */
  --header-height:        72px;
}


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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

input, textarea {
  font-family: inherit;
  font-size: inherit;
}

::selection {
  background: rgba(99, 102, 241, 0.4);
  color: var(--text-white);
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: var(--radius-full);
}


/* ==================== 通用布局 ==================== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--container-padding);
}

.section {
  padding: var(--section-padding);
}

/* 区域标题 */
.section__header {
  text-align: center;
  margin-bottom: 60px;
}

.section__badge {
  display: inline-block;
  padding: 6px 18px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary-light);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: var(--radius-full);
  margin-bottom: 16px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.section__title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 12px;
  color: var(--text-white);
}

.section__desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

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


/* ==================== 按钮组件 ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--gradient-primary);
  color: var(--text-white);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(99, 102, 241, 0.5);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid rgba(255, 255, 255, 0.25);
}

.btn--outline:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary-light);
  background: rgba(99, 102, 241, 0.08);
}

.btn--outline-white {
  background: transparent;
  color: var(--text-white);
  border: 1.5px solid rgba(255, 255, 255, 0.4);
}

.btn--outline-white:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.7);
}

.btn--lg {
  padding: 14px 32px;
  font-size: 1rem;
}


/* ==================== 导航栏 ==================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: all var(--transition-base);
  /* 初始透明 */
  background: transparent;
}

/* 滚动后毛玻璃效果（由 JS 添加 .header--scrolled 类） */
.header--scrolled {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav__logo-text {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: -0.02em;
}

/* 导航菜单 */
.nav__menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav__link {
  display: block;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.nav__link:hover {
  color: var(--text-white);
  background: rgba(255, 255, 255, 0.06);
}

/* CTA 按钮 */
.nav__cta {
  margin-left: 16px;
  z-index: 1001;
}

/* 汉堡菜单按钮 */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  z-index: 1001;
  transition: background var(--transition-fast);
}

.nav__toggle:hover {
  background: rgba(255, 255, 255, 0.06);
}

.nav__toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

/* 汉堡菜单激活状态 */
.nav__toggle--active .nav__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle--active .nav__toggle-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav__toggle--active .nav__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}


/* ==================== Hero 区域 ==================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--gradient-hero);
  padding-top: var(--header-height);
}

/* 粒子画布 */
.hero__canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* 内容区 */
.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 60px 0 100px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary-light);
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-full);
  margin-bottom: 28px;
  animation: fadeInUp 0.8s ease forwards;
}

.hero__title {
  font-size: clamp(3rem, 7.5vw, 5.2rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-white);
  margin-bottom: 24px;
  letter-spacing: -0.03em;
  animation: fadeInUp 0.8s ease 0.15s forwards;
  opacity: 0;
}

.hero__title--highlight {
  background: linear-gradient(135deg, #818CF8 0%, #A78BFA 40%, #06B6D4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 780px;
  margin: 0 auto 36px;
  line-height: 1.7;
  animation: fadeInUp 0.8s ease 0.3s forwards;
  opacity: 0;
}

.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
  animation: fadeInUp 0.8s ease 0.45s forwards;
  opacity: 0;
}

.hero__trust {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--text-muted);
  animation: fadeInUp 0.8s ease 0.6s forwards;
  opacity: 0;
}

.hero__trust span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero__trust i {
  color: var(--color-accent);
  font-size: 0.9rem;
}

/* Hero 底部波浪 */
.hero__wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  z-index: 2;
}

.hero__wave svg {
  display: block;
  width: 100%;
  height: auto;
}


/* ==================== 特性卡片网格 ==================== */
.features {
  background: var(--bg-primary);
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
  /* 初始隐藏，由 Intersection Observer 触发动画 */
  opacity: 0;
  transform: translateY(30px);
}

/* 卡片顶部渐变装饰线 */
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20px;
  right: 20px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 0 0 4px 4px;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.feature-card:hover::before {
  opacity: 1;
}

/* 动画可见状态 */
.feature-card--visible {
  opacity: 1;
  transform: translateY(0);
}

/* 卡片图标 */
.feature-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  font-size: 1.3rem;
  color: var(--text-white);
}

.feature-card__icon--purple {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.3), rgba(139, 92, 246, 0.1));
  color: #A78BFA;
}

.feature-card__icon--blue {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.3), rgba(99, 102, 241, 0.1));
  color: #818CF8;
}

.feature-card__icon--cyan {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.3), rgba(6, 182, 212, 0.1));
  color: #22D3EE;
}

.feature-card__icon--green {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.3), rgba(34, 197, 94, 0.1));
  color: #4ADE80;
}

.feature-card__icon--orange {
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.3), rgba(249, 115, 22, 0.1));
  color: #FB923C;
}

.feature-card__icon--pink {
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.3), rgba(236, 72, 153, 0.1));
  color: #F472B6;
}

.feature-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 10px;
}

.feature-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}


/* ==================== 技术优势区 ==================== */
.advantages {
  background: var(--bg-secondary);
  position: relative;
}

/* 背景装饰 */
.advantages::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.advantages__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  position: relative;
  z-index: 1;
}

.advantage-item {
  display: flex;
  gap: 20px;
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  opacity: 0;
  transform: translateY(30px);
}

.advantage-item:hover {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-sm);
}

.advantage-item--visible {
  opacity: 1;
  transform: translateY(0);
}

.advantage-item__icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.12);
  color: var(--color-primary-light);
  font-size: 1.2rem;
}

.advantage-item__content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 6px;
}

.advantage-item__content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}


/* ==================== 用户场景区（Tab 切换） ==================== */
.scenarios {
  background: var(--bg-primary);
}

/* Tab 导航容器 */
.scenarios__tabs {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-bottom: 48px;
  flex-wrap: wrap;
  position: relative;
  padding: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  max-width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

/* Tab 按钮 */
.scenarios__tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--radius-full);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  position: relative;
  z-index: 1;
  white-space: nowrap;
}

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

.scenarios__tab--active {
  color: var(--text-white);
  background: var(--gradient-primary);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
  transform: scale(1.03);
}

.scenarios__tab i {
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.scenarios__tab--active i {
  transform: scale(1.15);
}

/* Tab 面板容器 */
.scenarios__panels {
  position: relative;
  min-height: 320px;
  overflow: hidden;
}

/* Tab 面板 */
.scenarios__panel {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  visibility: hidden;
  transform: translateX(40px);
  transition: all 1.2s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

.scenarios__panel--active {
  position: relative;
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
  pointer-events: auto;
}

/* 面板退出动画（向左滑出） */
.scenarios__panel--exiting {
  opacity: 0;
  transform: translateX(-30px);
  transition: all 0.9s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 场景内容布局 */
.scenario-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.scenario-content__text h3 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 14px;
}

.scenario-content__text > p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.scenario-content__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.scenario-content__list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.scenario-content__list i {
  color: var(--color-accent);
  font-size: 0.95rem;
  flex-shrink: 0;
}

/* 场景视觉 Mockup */
.scenario-content__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.scenario-content__mockup {
  width: 100%;
  max-width: 380px;
}

/* 浏览器窗口 Mockup */
.mockup-browser,
.mockup-code {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.mockup-browser__dots,
.mockup-code__dots {
  display: flex;
  gap: 6px;
  padding: 14px 18px;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--border-color);
}

.mockup-browser__dots span,
.mockup-code__dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.mockup-browser__dots span:nth-child(1),
.mockup-code__dots span:nth-child(1) {
  background: #EF4444;
}

.mockup-browser__dots span:nth-child(2),
.mockup-code__dots span:nth-child(2) {
  background: #F59E0B;
}

.mockup-browser__dots span:nth-child(3),
.mockup-code__dots span:nth-child(3) {
  background: #22C55E;
}

.mockup-browser__body,
.mockup-code__body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.mockup-icon {
  font-size: 2.5rem;
  color: var(--color-primary-light);
}

/* 火箭 Mockup */
.mockup-rocket,
.mockup-book {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  gap: 16px;
  color: var(--text-muted);
  font-size: 0.9rem;
  box-shadow: var(--shadow-md);
}

.mockup-rocket .mockup-icon,
.mockup-book .mockup-icon {
  font-size: 3rem;
  color: var(--color-primary-light);
}


/* ==================== 数据统计展示区 ==================== */
.stats {
  background: var(--bg-secondary);
}

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

.stat-card {
  text-align: center;
  padding: 36px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  opacity: 0;
  transform: translateY(30px);
}

.stat-card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.stat-card--visible {
  opacity: 1;
  transform: translateY(0);
}

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

.stat-card__number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 8px;
  line-height: 1;
}

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

.stat-card__suffix {
  font-size: 1.5rem;
  color: var(--color-primary-light);
}

.stat-card__label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}


/* ==================== CTA 区域 ==================== */
.cta-section {
  background: var(--bg-primary);
  padding-bottom: 100px;
}

.cta-card {
  text-align: center;
  padding: 64px 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

/* 背景光晕 */
.cta-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.cta-card__title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.cta-card__desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  position: relative;
  z-index: 1;
}

.cta-card__actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}


/* ==================== Footer ==================== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

/* 品牌信息 */
.footer__brand {
  max-width: 280px;
}

.footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.footer__logo span {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-white);
}

.footer__brand-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.footer__social {
  display: flex;
  gap: 12px;
}

.footer__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.footer__social a:hover {
  background: var(--color-primary);
  color: var(--text-white);
}

/* Footer 列 */
.footer__column h4,
.footer__heading {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-white);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}

.footer__column ul,
.footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__column ul li a,
.footer__links li a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer__column ul li a:hover,
.footer__links li a:hover {
  color: var(--color-primary-light);
}

/* Footer 底部 */
.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 12px;
}

.footer__bottom-left {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.footer__bottom p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer__icp {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer__icp:hover {
  color: var(--text-secondary);
}

.footer__bottom-links {
  display: flex;
  gap: 20px;
}

.footer__bottom-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer__bottom-links a:hover {
  color: var(--text-secondary);
}


/* ==================== 动画关键帧 ==================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.5; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}


/* ==================== 法律内容页面（服务条款 / 隐私政策） ==================== */

/* 页面标题区 */
.page-hero {
  padding: 140px 0 60px;
  background: var(--gradient-hero);
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* 背景光晕 */
.page-hero::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

/* 背景网格装饰 */
.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99, 102, 241, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* 浮动几何装饰 */
.page-hero__decor {
  position: absolute;
  pointer-events: none;
  z-index: 0;
}

/* 装饰圆环 */
.page-hero__decor--ring {
  width: 300px;
  height: 300px;
  border: 1.5px solid rgba(99, 102, 241, 0.12);
  border-radius: 50%;
  top: -80px;
  right: -100px;
  animation: float 6s ease-in-out infinite;
}

/* 装饰方块 */
.page-hero__decor--square {
  width: 80px;
  height: 80px;
  border: 1.5px solid rgba(139, 92, 246, 0.1);
  border-radius: 12px;
  bottom: 40px;
  left: 10%;
  transform: rotate(25deg);
  animation: float 8s ease-in-out infinite 1s;
}

/* 装饰小圆点 */
.page-hero__decor--dots {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  width: 120px;
  top: 30%;
  right: 8%;
  animation: float 7s ease-in-out infinite 0.5s;
}

.page-hero__decor--dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.2);
}

.page-hero__decor--dots span:nth-child(3n) {
  background: rgba(139, 92, 246, 0.25);
}

.page-hero__decor--dots span:nth-child(5n) {
  background: rgba(6, 182, 212, 0.2);
}

/* 装饰渐变线条 */
.page-hero__decor--line {
  width: 200px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.2), transparent);
  bottom: 120px;
  right: 5%;
  transform: rotate(-15deg);
  animation: float 5s ease-in-out infinite 2s;
}

.page-hero__decor--line2 {
  width: 150px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.18), transparent);
  top: 25%;
  left: 5%;
  transform: rotate(10deg);
  animation: float 6s ease-in-out infinite 1.5s;
}

.page-hero__title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
  animation: fadeInUp 0.6s ease forwards;
}

.page-hero__subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  position: relative;
  z-index: 1;
  animation: fadeInUp 0.6s ease 0.15s forwards;
  opacity: 0;
}

/* 法律内容容器 */
.legal-content {
  background: var(--bg-primary);
  padding-top: 60px;
  padding-bottom: 80px;
}

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

/* 法律条款块 */
.legal-block {
  margin-bottom: 40px;
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-base);
}

.legal-block:hover {
  border-color: rgba(99, 102, 241, 0.2);
}

.legal-block:last-child {
  margin-bottom: 0;
}

.legal-block p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 14px;
}

.legal-block p:last-child {
  margin-bottom: 0;
}

.legal-block strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* 条款标题 */
.legal-block__heading {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

.legal-block__heading::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

/* 子标题 */
.legal-block__subheading {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 20px;
  margin-bottom: 10px;
}

.legal-block__subheading:first-of-type {
  margin-top: 0;
}

/* 条款列表 */
.legal-block__list {
  list-style: none;
  padding: 0;
  margin: 0 0 14px 0;
}

.legal-block__list li {
  position: relative;
  padding-left: 22px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 6px;
}

.legal-block__list li:last-child {
  margin-bottom: 0;
}

.legal-block__list li::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 11px;
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
}

.legal-block__list li strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ==================== 视频弹窗 ==================== */
.video-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.video-modal--open {
  opacity: 1;
  visibility: visible;
}

/* 遮罩层 */
.video-modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  cursor: pointer;
}

/* 弹窗容器 */
.video-modal__container {
  position: relative;
  z-index: 1;
  width: 90%;
  max-width: 900px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg), 0 0 80px rgba(99, 102, 241, 0.15);
  transform: translateY(20px) scale(0.97);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.video-modal--open .video-modal__container {
  transform: translateY(0) scale(1);
}

/* 关闭按钮 */
.video-modal__close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 2;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  color: var(--text-white);
  font-size: 1.1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.video-modal__close:hover {
  background: rgba(239, 68, 68, 0.7);
  border-color: rgba(239, 68, 68, 0.5);
  transform: scale(1.08);
}

/* 视频容器（16:9 比例） */
.video-modal__wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  overflow: hidden;
}

.video-modal__player {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  outline: none;
}

/* 视频信息栏 */
.video-modal__info {
  padding: 20px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.video-modal__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-white);
}

.video-modal__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* ==================== 响应式设计 ==================== */

/* --- 平板端 (≤1024px) --- */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px 0;
  }

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

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

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

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

  .scenario-content__visual {
    order: -1;
  }

  .scenario-content__mockup {
    max-width: 300px;
  }

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

  .footer__brand {
    grid-column: 1 / -1;
    max-width: 100%;
  }
}

/* --- 手机端 (≤768px) --- */
@media (max-width: 768px) {
  :root {
    --section-padding: 64px 0;
    --header-height: 60px;
  }

  .container {
    padding: 0 16px;
  }

  /* 导航栏 */
  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 8px;
    background: var(--bg-glass);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 1000;
  }

  .nav__menu--open {
    opacity: 1;
    visibility: visible;
  }

  .nav__link {
    font-size: 1.1rem;
    padding: 12px 24px;
  }

  .nav__cta {
    margin-left: 0;
    margin-top: 16px;
  }

  /* Hero */
  .hero__title {
    font-size: clamp(1.8rem, 8vw, 2.6rem);
  }

  .hero__trust {
    gap: 16px;
  }

  /* 特性卡片 */
  .features__grid {
    grid-template-columns: 1fr;
  }

  /* 统计 */
  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .stat-card {
    padding: 24px 16px;
  }

  .stat-card__number {
    font-size: 2rem;
  }

  /* Tab */
  .scenarios__tabs {
    gap: 6px;
  }

  .scenarios__tab {
    padding: 10px 18px;
    font-size: 0.8rem;
  }

  /* CTA */
  .cta-card {
    padding: 40px 24px;
  }

  /* 法律内容 */
  .page-hero {
    padding: 120px 0 48px;
  }

  /* 移动端隐藏部分装饰 */
  .page-hero__decor--ring,
  .page-hero__decor--square {
    display: none;
  }

  .legal-content {
    padding-top: 40px;
    padding-bottom: 60px;
  }

  .legal-block {
    padding: 24px 20px;
    margin-bottom: 28px;
  }

  .legal-block__heading {
    font-size: 1.15rem;
  }

  /* Footer */
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

  .footer__bottom-left {
    flex-direction: column;
    gap: 8px;
  }

  /* 联系我们 - 移动端卡片降级为单列 */
  .contact-info__cards {
    grid-template-columns: 1fr !important;
  }

  .contact-main__grid--single {
    max-width: 100%;
  }
}

/* --- 小手机端 (≤480px) --- */
@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    width: 100%;
  }

  .hero__actions .btn {
    width: 100%;
  }

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

  .section__title {
    font-size: 1.5rem;
  }

  .btn--lg {
    padding: 12px 24px;
    font-size: 0.95rem;
  }

  /* 法律内容 */
  .page-hero {
    padding: 100px 0 36px;
  }

  .legal-block {
    padding: 20px 16px;
    margin-bottom: 24px;
  }

  .legal-block__heading {
    font-size: 1.05rem;
  }

  .legal-block__subheading {
    font-size: 0.95rem;
  }

  .legal-block p,
  .legal-block__list li {
    font-size: 0.88rem;
  }
}


/* ============================================================
   定价方案页面样式
   ============================================================ */

/* 计费周期切换 */
.pricing-toggle {
  background: var(--bg-primary);
  padding-top: 0;
  padding-bottom: 0;
}

.pricing-toggle__wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.pricing-toggle__label {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  cursor: pointer;
  user-select: none;
}

.pricing-toggle__label--active {
  color: var(--text-white);
  font-weight: 600;
}

.pricing-toggle__badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: #22C55E;
  background: rgba(34, 197, 94, 0.12);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

/* 切换开关 */
.pricing-toggle__switch {
  position: relative;
  width: 52px;
  height: 28px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-base);
  flex-shrink: 0;
}

.pricing-toggle__switch::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.pricing-toggle__switch--yearly::after {
  transform: translateX(24px);
}

/* 定价卡片网格 */
.pricing-cards {
  background: var(--bg-primary);
  padding-top: 40px;
}

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

/* 定价卡片 */
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.pricing-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

/* 推荐方案高亮 */
.pricing-card--featured {
  border-color: var(--color-primary);
  box-shadow: 0 0 40px rgba(99, 102, 241, 0.15);
  transform: scale(1.03);
}

.pricing-card--featured:hover {
  transform: scale(1.03) translateY(-4px);
}

.pricing-card__badge {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-primary);
  padding: 5px 14px;
  border-radius: var(--radius-full);
}

.pricing-card__header {
  margin-bottom: 24px;
}

.pricing-card__name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 6px;
}

.pricing-card__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* 价格 */
.pricing-card__price {
  margin-bottom: 24px;
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.pricing-card__currency {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-white);
}

.pricing-card__amount {
  font-size: 3rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1;
  transition: all 0.3s ease;
}

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

/* CTA 按钮 */
.pricing-card__cta {
  width: 100%;
  margin-bottom: 28px;
}

/* 特性列表 */
.pricing-card__features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: auto;
}

.pricing-card__features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.pricing-card__features li i.fa-check {
  color: #22C55E;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.pricing-card__feature--disabled {
  opacity: 0.4;
}

.pricing-card__feature--disabled i.fa-xmark {
  color: var(--text-muted);
  font-size: 0.85rem;
  flex-shrink: 0;
}

/* ==================== 功能对比表 ==================== */
.compare {
  background: var(--bg-secondary);
}

.compare__table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.compare__table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

.compare__table thead {
  background: var(--bg-card);
}

.compare__table th {
  padding: 16px 20px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-white);
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.compare__table th:first-child {
  text-align: left;
}

.compare__col--highlight {
  background: rgba(99, 102, 241, 0.08);
}

.compare__table td {
  padding: 14px 20px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.compare__table td:first-child {
  text-align: left;
  font-weight: 500;
  color: var(--text-primary);
}

.compare__table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.compare__icon--yes {
  color: #22C55E;
}

.compare__icon--no {
  color: var(--text-muted);
}

/* ==================== FAQ 折叠面板 ==================== */
.faq {
  background: var(--bg-primary);
}

.faq__list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq__item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-base);
}

.faq__item:hover {
  border-color: rgba(99, 102, 241, 0.25);
}

.faq__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.faq__question:hover {
  color: var(--color-primary-light);
}

.faq__icon {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0;
}

.faq__item--open .faq__icon {
  transform: rotate(180deg);
  color: var(--color-primary-light);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease;
}

.faq__item--open .faq__answer {
  max-height: 300px;
}

.faq__answer p {
  padding: 0 24px 20px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==================== CTA 区域（通用） ==================== */
.cta {
  background: var(--bg-primary);
  padding-bottom: 100px;
}

.cta__card {
  text-align: center;
  padding: 64px 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.cta__card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.cta__title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.cta__desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  position: relative;
  z-index: 1;
}

.cta__actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}


/* ============================================================
   关于我们页面样式
   ============================================================ */

/* 使命愿景 */
.about-mission {
  background: var(--bg-primary);
}

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

.about-mission__card {
  text-align: center;
  padding: 40px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-slow);
  opacity: 0;
  transform: translateY(30px);
}

.about-mission__card.feature-card--visible {
  opacity: 1;
  transform: translateY(0);
}

.about-mission__card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.about-mission__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.12);
  color: var(--color-primary-light);
  font-size: 1.6rem;
  margin-bottom: 20px;
}

.about-mission__card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
}

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

/* 发展历程时间线 */
.timeline {
  background: var(--bg-secondary);
}

.timeline__list {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  padding-left: 40px;
}

/* 时间线竖线 */
.timeline__list::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-secondary), transparent);
}

.timeline__item {
  position: relative;
  margin-bottom: 36px;
  opacity: 0;
  transform: translateX(-20px);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline__item:last-child {
  margin-bottom: 0;
}

.timeline__item.feature-card--visible {
  opacity: 1;
  transform: translateX(0);
}

/* 时间线圆点 */
.timeline__dot {
  position: absolute;
  left: -33px;
  top: 6px;
  width: 14px;
  height: 14px;
  background: var(--gradient-primary);
  border-radius: 50%;
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.5);
  z-index: 1;
}

.timeline__content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: border-color var(--transition-base);
}

.timeline__content:hover {
  border-color: rgba(99, 102, 241, 0.25);
}

.timeline__date {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary-light);
  margin-bottom: 6px;
}

.timeline__content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 6px;
}

.timeline__content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 核心价值观 */
.values {
  background: var(--bg-primary);
}

.values__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.values__card {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-slow);
  opacity: 0;
  transform: translateY(30px);
}

.values__card.feature-card--visible {
  opacity: 1;
  transform: translateY(0);
}

.values__card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.values__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.12);
  color: var(--color-primary-light);
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.values__card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
}

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

/* 团队介绍 */
.team {
  background: var(--bg-secondary);
}

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

.team__card {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-slow);
  opacity: 0;
  transform: translateY(30px);
}

.team__card.feature-card--visible {
  opacity: 1;
  transform: translateY(0);
}

.team__card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.team__avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 2rem;
  color: var(--color-primary-light);
}

.team__name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 4px;
}

.team__role {
  display: block;
  font-size: 0.8rem;
  color: var(--color-primary-light);
  font-weight: 500;
  margin-bottom: 10px;
}

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

/* 合作伙伴 */
.partners {
  background: var(--bg-primary);
}

.partners__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}

.partners__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 28px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  opacity: 0;
  transform: translateY(20px);
}

.partners__item.feature-card--visible {
  opacity: 1;
  transform: translateY(0);
}

.partners__item:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-sm);
}

.partners__item i {
  font-size: 2rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.partners__item:hover i {
  color: var(--color-primary-light);
}

.partners__item span {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}


/* ============================================================
   联系我们页面样式
   ============================================================ */

/* 联系表单 + 信息卡片 布局 */
.contact-main {
  background: var(--bg-primary);
}

.contact-main__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: stretch;
}

/* 单列模式（无表单时使用） */
.contact-main__grid--single {
  grid-template-columns: 1fr;
  max-width: 900px;
  margin: 0 auto;
}

/* 表单区域 */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 36px;
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-form.feature-card--visible {
  opacity: 1;
  transform: translateY(0);
}

.contact-form__title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 6px;
}

.contact-form__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

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

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

.contact-form__field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.contact-form__label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.contact-form__required {
  color: #EF4444;
}

.contact-form__input {
  padding: 12px 16px;
  font-size: 0.9rem;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.contact-form__input::placeholder {
  color: var(--text-muted);
}

.contact-form__input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.contact-form__select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%236B6B8A' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 40px;
  cursor: pointer;
}

.contact-form__textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form__submit {
  align-self: flex-start;
  padding: 12px 32px;
}

/* 提交成功提示 */
.contact-form__success {
  text-align: center;
  padding: 40px 20px;
}

.contact-form__success i {
  font-size: 3rem;
  color: #22C55E;
  margin-bottom: 16px;
}

.contact-form__success h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
}

.contact-form__success p {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* 联系信息区域 */
.contact-info {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-info.feature-card--visible {
  opacity: 1;
  transform: translateY(0);
}

.contact-info__title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 6px;
}

.contact-info__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.contact-info__cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}

.contact-info__card {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-base);
}

.contact-info__card:hover {
  border-color: rgba(99, 102, 241, 0.25);
}

.contact-info__icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(99, 102, 241, 0.12);
  color: var(--color-primary-light);
  font-size: 1.1rem;
}

.contact-info__text h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 4px;
}

.contact-info__text p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 2px;
}

.contact-info__text span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* 社交媒体 */
.contact-info__social h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 12px;
}

.contact-info__social-links {
  display: flex;
  gap: 10px;
}

.contact-info__social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  font-size: 1.1rem;
  transition: all var(--transition-fast);
}

.contact-info__social-links a:hover {
  background: var(--color-primary);
  color: var(--text-white);
}

/* 地图占位区 */
.contact-map {
  background: var(--bg-secondary);
  padding-top: 0;
}

.contact-map__placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 80px 20px;
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  text-align: center;
}

.contact-map__placeholder i {
  font-size: 2.5rem;
  color: var(--color-primary-light);
}

.contact-map__placeholder p {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.contact-map__placeholder span {
  font-size: 0.85rem;
  color: var(--text-muted);
}


/* ============================================================
   响应式设计 - 新增页面
   ============================================================ */

/* 平板端 */
@media (max-width: 1024px) {
  .pricing-cards__grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

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

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

  .about-mission__grid {
    grid-template-columns: 1fr;
  }

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

  .team__grid {
    grid-template-columns: repeat(2,