/* ========================================
   银联商务蓝牙POS - 品牌设计系统
   深棕金额零风
   ======================================== */

/* CSS变量定义 */
:root {
  /* 主品牌色 - 深棕金 */
  --ums-brown: #713F12;
  --ums-brown-light: #92400E;
  --ums-brown-dark: #5C3410;
  
  /* 额度色 - 额紫 */
  --amount-purple: #8B5CF6;
  --amount-purple-light: #A78BFA;
  --amount-purple-dark: #7C3AED;
  
  /* 零押金色 - 零绿 */
  --zero-green: #10B981;
  --zero-green-light: #34D399;
  --zero-green-dark: #059669;
  
  /* 背景色 */
  --bg-page: #FFFBEB;
  --bg-section: #FEF3C7;
  --bg-card: #FFFFFF;
  
  /* 文字色 */
  --text-dark: #422006;
  --text-body: #334155;
  --text-light: #64748B;
  --text-white: #FFFFFF;
  
  /* 边框色 */
  --border-light: #E5E7EB;
  --border-brown: rgba(113, 63, 18, 0.2);
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-brown: 0 4px 20px rgba(113, 63, 18, 0.15);
  --shadow-purple: 0 4px 20px rgba(139, 92, 246, 0.3);
  --shadow-green: 0 4px 20px rgba(16, 185, 129, 0.3);
  
  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  /* 过渡 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* 字体 */
  --font-cn: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-num: 'DM Sans', 'Roboto', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-body);
  background-color: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--text-white);
  transition: box-shadow var(--transition-normal);
}

.navbar.scrolled {
  box-shadow: 0 2px 20px var(--shadow-brown);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.navbar-logo-icon {
  width: 40px;
  height: 40px;
}

.navbar-logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--ums-brown);
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 40px;
  list-style: none;
}

.navbar-nav a {
  text-decoration: none;
  color: var(--text-body);
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.navbar-nav a:hover,
.navbar-nav a.active {
  color: var(--ums-brown);
}

.navbar-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--amount-purple);
  transition: width var(--transition-fast);
}

.navbar-nav a:hover::after,
.navbar-nav a.active::after {
  width: 100%;
}

.navbar-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  background: linear-gradient(135deg, var(--amount-purple), var(--amount-purple-dark));
  color: var(--text-white);
  text-decoration: none;
  border-radius: var(--radius-full);
  font-weight: 600;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-purple);
}

.navbar-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(139, 92, 246, 0.4);
}

/* 汉堡菜单按钮 */
.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.navbar-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--ums-brown);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ========================================
   Hero区域
   ======================================== */
.hero {
  position: relative;
  padding: 140px 0 100px;
  background: linear-gradient(135deg, var(--ums-brown) 0%, var(--ums-brown-light) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 70%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
              radial-gradient(circle at 70% 30%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  color: var(--text-white);
  font-size: 14px;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--amount-purple);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero-title em {
  font-style: normal;
  color: var(--amount-purple-light);
}

.hero-subtitle {
  font-size: 20px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 40px;
  background: linear-gradient(135deg, var(--amount-purple), var(--amount-purple-dark));
  color: var(--text-white);
  text-decoration: none;
  border-radius: var(--radius-full);
  font-size: 18px;
  font-weight: 600;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-purple);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(139, 92, 246, 0.5);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 40px;
  background: transparent;
  color: var(--text-white);
  text-decoration: none;
  border-radius: var(--radius-full);
  font-size: 18px;
  font-weight: 600;
  border: 2px solid rgba(255, 255, 255, 0.5);
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--text-white);
}

/* ========================================
   页面标题区
   ======================================== */
.page-hero {
  position: relative;
  padding: 120px 0 80px;
  background: linear-gradient(135deg, var(--ums-brown) 0%, var(--ums-brown-light) 100%);
  text-align: center;
}

.page-hero.purple {
  background: linear-gradient(135deg, var(--amount-purple-dark) 0%, var(--amount-purple) 100%);
}

.page-hero.purple::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 100%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.page-hero.green {
  background: linear-gradient(135deg, var(--zero-green-dark) 0%, var(--zero-green) 100%);
}

.page-hero.green::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 100%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

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

.page-hero h1 {
  font-size: 48px;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   内容区块
   ======================================== */
.section {
  padding: 80px 0;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-dark);
  text-align: center;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 18px;
  color: var(--text-light);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 50px;
}

/* 额零板块 - 左图右文 */
.feature-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.feature-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
}

.feature-content h3 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 20px;
}

.feature-content p {
  font-size: 18px;
  color: var(--text-body);
  line-height: 1.8;
}

.feature-content .highlight {
  color: var(--amount-purple);
  font-weight: 700;
}

/* 额度卡片 - 错落布局 */
.amount-cards {
  display: grid;
  grid-template-columns: 55% 43%;
  gap: 30px;
}

.amount-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.amount-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.amount-card-full {
  grid-column: span 1;
}

.amount-card-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--amount-purple), var(--amount-purple-dark));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.amount-card-icon svg {
  width: 32px;
  height: 32px;
  color: var(--text-white);
}

.amount-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.amount-card p {
  color: var(--text-light);
  margin-bottom: 20px;
}

.amount-stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.amount-stat-value {
  font-family: var(--font-num);
  font-size: 48px;
  font-weight: 700;
  color: var(--amount-purple);
}

.amount-stat-unit {
  font-size: 20px;
  color: var(--text-light);
}

/* 零押金板块 */
.zero-section {
  background: var(--bg-section);
  padding: 80px 0;
}

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

.zero-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 16px;
}

.zero-title .highlight-green {
  color: var(--zero-green);
}

.zero-desc {
  font-size: 18px;
  color: var(--text-body);
  margin-bottom: 30px;
  line-height: 1.8;
}

.zero-promises {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 40px;
}

.zero-promise {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  color: var(--text-body);
}

.zero-promise-icon {
  width: 24px;
  height: 24px;
  background: var(--zero-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.zero-promise-icon svg {
  width: 14px;
  height: 14px;
  color: var(--text-white);
}

/* 对比表格 */
.compare-table {
  width: 100%;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border-collapse: collapse;
}

.compare-table th,
.compare-table td {
  padding: 20px 24px;
  text-align: left;
  border-bottom: 1px solid var(--border-light);
}

.compare-table th {
  background: var(--ums-brown);
  color: var(--text-white);
  font-weight: 600;
  font-size: 16px;
}

.compare-table th:first-child {
  border-radius: var(--radius-lg) 0 0 0;
}

.compare-table th:last-child {
  border-radius: 0 var(--radius-lg) 0 0;
}

.compare-table tr:last-child td {
  border-bottom: none;
}

.compare-table td {
  font-size: 15px;
  color: var(--text-body);
}

.compare-table .check {
  color: var(--zero-green);
  font-weight: 700;
}

.compare-table .cross {
  color: var(--text-light);
}

.compare-highlight {
  background: linear-gradient(135deg, var(--ums-brown), var(--ums-brown-light));
  color: var(--text-white) !important;
  font-weight: 600;
}

/* ========================================
   FAQ手风琴
   ======================================== */
.faq-section {
  padding: 80px 0;
}

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

.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  text-align: left;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: all var(--transition-fast);
}

.faq-question:hover {
  color: var(--ums-brown);
}

.faq-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer-content {
  padding: 0 24px 20px;
  color: var(--text-body);
  line-height: 1.7;
}

/* ========================================
   底部申请区
   ======================================== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--ums-brown) 0%, var(--ums-brown-light) 100%);
  text-align: center;
}

.cta-content h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 16px;
}

.cta-content h2 .highlight-green {
  color: var(--zero-green-light);
}

.cta-content p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
}

.cta-content .btn-primary {
  padding: 18px 48px;
  font-size: 20px;
}

/* ========================================
   页脚
   ======================================== */
.footer {
  background: linear-gradient(180deg, var(--ums-brown-light) 0%, var(--ums-brown) 100%);
  color: var(--text-white);
  padding: 60px 0 30px;
}

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

.footer-brand h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.8;
}

.footer-links h4 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
}

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

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

.footer-links a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
}

/* ========================================
   品牌对比页
   ======================================== */
.brand-compare {
  padding: 80px 0;
}

.brand-table {
  width: 100%;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border-collapse: collapse;
}

.brand-table th,
.brand-table td {
  padding: 24px 30px;
  text-align: center;
  border-bottom: 1px solid var(--border-light);
}

.brand-table th {
  background: linear-gradient(135deg, var(--ums-brown) 0%, var(--ums-brown-light) 100%);
  color: var(--text-white);
  font-weight: 600;
  font-size: 18px;
}

.brand-table th:first-child {
  text-align: left;
  border-radius: var(--radius-lg) 0 0 0;
}

.brand-table th:last-child {
  border-radius: 0 var(--radius-lg) 0 0;
}

.brand-table tr:last-child td {
  border-bottom: none;
}

.brand-table td:first-child {
  text-align: left;
  font-weight: 600;
  color: var(--text-dark);
  background: var(--bg-section);
}

.brand-table .brand-highlight {
  background: linear-gradient(135deg, rgba(113, 63, 18, 0.1), rgba(146, 64, 14, 0.1));
}

/* ========================================
   额度优势卡片 - 错落布局
   ======================================== */
.advantage-cards {
  display: grid;
  gap: 30px;
}

.advantage-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.advantage-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.advantage-card:nth-child(1) {
  max-width: 70%;
}

.advantage-card:nth-child(2) {
  max-width: 100%;
}

.advantage-card:nth-child(3) {
  background: linear-gradient(135deg, var(--amount-purple-dark), var(--amount-purple));
  color: var(--text-white);
}

.advantage-card:nth-child(3) h3,
.advantage-card:nth-child(3) p {
  color: var(--text-white);
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  max-width: 100%;
}

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

.advantage-value {
  font-family: var(--font-num);
  font-size: 56px;
  font-weight: 700;
  color: var(--amount-purple);
  line-height: 1;
  margin-bottom: 8px;
}

.advantage-card:nth-child(3) .advantage-value {
  color: var(--text-white);
}

.advantage-label {
  font-size: 16px;
  color: var(--text-light);
}

.advantage-card:nth-child(3) .advantage-label {
  color: rgba(255, 255, 255, 0.8);
}

/* 零押金场景 */
.zero场景 {
  display: grid;
  gap: 30px;
}

.zero场景-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.zero场景-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.zero场景-item {
  text-align: center;
}

.zero场景-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--zero-green), var(--zero-green-dark));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.zero场景-icon svg {
  width: 32px;
  height: 32px;
  color: var(--text-white);
}

.zero场景-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.zero场景-title .highlight-green {
  color: var(--zero-green);
}

.zero场景-desc {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
}

/* 押金规则说明框 */
.fee-box {
  background: rgba(16, 185, 129, 0.08);
  border: 2px solid var(--zero-green);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-top: 40px;
}

.fee-box h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 24px;
}

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

.fee-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(16, 185, 129, 0.2);
}

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

.fee-list .fee-label {
  color: var(--text-light);
  min-width: 120px;
}

.fee-list .fee-value {
  color: var(--zero-green);
  font-weight: 600;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 992px) {
  .hero-title {
    font-size: 42px;
  }
  
  .section-title {
    font-size: 30px;
  }
  
  .feature-split {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .amount-cards {
    grid-template-columns: 1fr;
  }
  
  .amount-card:nth-child(1) {
    max-width: 100%;
  }
  
  .advantage-card:nth-child(1) {
    max-width: 100%;
  }
  
  .advantage-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .zero场景-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .navbar-nav {
    display: none;
  }
  
  .navbar-toggle {
    display: flex;
  }
  
  .navbar-cta {
    display: none;
  }
  
  .mobile-nav {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--text-white);
    padding: 20px;
    box-shadow: var(--shadow-lg);
  }
  
  .mobile-nav.active {
    display: block;
  }
  
  .mobile-nav a {
    display: block;
    padding: 15px 0;
    color: var(--text-body);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid var(--border-light);
  }
  
  .mobile-nav a:last-child {
    border-bottom: none;
  }
  
  .hero {
    padding: 120px 0 80px;
  }
  
  .hero-title {
    font-size: 32px;
  }
  
  .hero-subtitle {
    font-size: 16px;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .btn-primary, .btn-secondary {
    width: 100%;
    text-align: center;
  }
  
  .section {
    padding: 60px 0;
  }
  
  .page-hero h1 {
    font-size: 32px;
  }
  
  .advantage-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .compare-table th,
  .compare-table td {
    padding: 16px;
    font-size: 14px;
  }
  
  .brand-table th,
  .brand-table td {
    padding: 16px 12px;
    font-size: 14px;
  }
}

/* ========================================
   表单样式
   ======================================== */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 16px;
  font-family: var(--font-cn);
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--amount-purple);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.form-input::placeholder {
  color: var(--text-light);
}

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

.animate-fadeInUp {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }

/* Hero渐变动画 */
@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.hero {
  background-size: 200% 200%;
  animation: gradientShift 8s ease infinite;
}