/* 自定义字体加载 */
@font-face {
  font-family: 'Noto Sans SC';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/NotoSansSC-Regular.woff2') format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}

@font-face {
  font-family: 'Noto Sans SC';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/NotoSansSC-Medium.woff2') format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}

@font-face {
  font-family: 'Noto Sans SC';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/NotoSansSC-Bold.woff2') format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}

/* CSS变量：定义全局颜色和值，便于维护和减少重复 */
:root {
  --primary-color: #6c5ce7;
  --primary-light: #a29bfe;
  --primary-gradient: linear-gradient(135deg, #6c5ce7, #a29bfe);
  --accent-color: #fdcb6e;
  --text-color: #2d3436;
  --text-light: #666;
  --bg-color: #f5f7fa;
  --white: #fff;
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 5px 15px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.2s ease;
  --container-width: 1200px;
}

/* 重置和基础样式 - 减少重复声明 */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
  font-size: 16px;
  line-height: 1.6;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Microsoft YaHei', '微软雅黑', sans-serif;
  color: var(--text-color);
  background-color: var(--bg-color);
  overflow-x: hidden;
  text-rendering: optimizeSpeed;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

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

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

input,
select,
textarea {
  font-family: inherit;
  outline: none;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* 布局组件 */
.content-section {
  padding: 80px 0;
}

/* 导航菜单 - 减少选择器嵌套 */
.nav-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  padding: 15px 0;
}

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

.site-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary-color);
}

.nav-menu ul {
  display: flex;
  list-style-type: none;
  gap: 10px;
}

.nav-menu ul li a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 15px;
  border-radius: var(--radius-sm);
  color: var(--text-color);
  font-weight: 500;
  transition: var(--transition);
}

.nav-menu ul li a:hover {
  background-color: rgba(108, 92, 231, 0.1);
  color: var(--primary-color);
  transform: translateY(-2px);
}

.nav-icon {
  color: var(--text-color);
  transition: color 0.2s ease;
  flex-shrink: 0;
}

.nav-menu ul li a:hover .nav-icon {
  color: var(--primary-color);
  transform: scale(1.1);
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 20px;
  cursor: pointer;
}

.hamburger div {
  width: 100%;
  height: 3px;
  background-color: var(--primary-color);
  border-radius: 5px;
  transition: var(--transition);
}

/* 首页区域 - 优化层叠和选择器 */
#home {
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--primary-gradient);
  background-size: cover;
  background-position: center;
  color: var(--white);
  padding: 20px;
  position: relative;
}

#home .container {
  position: relative;
  z-index: 1;
}

#home h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

#home p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 1.5rem;
  max-width: 700px;
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

/* 主页按钮 - 合并通用样式 */
.home-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-top: 30px;
}

.primary-btn,
.secondary-btn {
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  text-align: center;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.primary-btn {
  background-color: var(--accent-color);
  color: var(--text-color);
}

.secondary-btn {
  background-color: rgba(255, 255, 255, 0.15);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.primary-btn:hover,
.secondary-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.primary-btn:hover {
  background-color: #f9ca7b;
}

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

.home-notice {
  background-color: rgba(0, 0, 0, 0.2);
  padding: 10px 20px;
  border-radius: 50px;
  margin-bottom: 25px;
  font-size: 1rem;
  color: var(--white);
  border-left: 4px solid var(--primary-light);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
  box-shadow: var(--shadow-sm);
}

/* 标题样式统一 - 合并相似样式 */
.section-title {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 40px;
  color: var(--primary-color);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), #00cec9);
  border-radius: 3px;
}

.exchange-title .section-title,
.agent-title .section-title,
.about-header .section-title {
  margin: 0;
  display: flex;
  align-items: center;
}

.exchange-title .section-title::after,
.agent-title .section-title::after,
.about-header .section-title::after {
  bottom: -25px;
}

/* 通知栏 */
.notice {
  display: flex;
  align-items: center;
  background: linear-gradient(90deg, var(--accent-color), #ffeaa7);
  color: var(--text-color);
  padding: 15px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin: 20px 0;
  font-weight: 500;
  gap: 15px;
}

.notice-icon {
  width: 24px;
  height: 24px;
}

/* 能量租赁区块 - 优化选择器 */
.rental-container {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto auto;
  gap: 30px;
  margin-top: 30px;
}

.rental-second-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  grid-column: 1;
  grid-row: 2;
}

/* 合并卡片通用样式 */
.rental-left,
.rental-right,
.rental-middle {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease;
}

.rental-left {
  grid-column: 1;
  grid-row: 1;
}

.rental-left:hover,
.rental-right:hover,
.rental-middle:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

/* 卡片组件 */
.card-header {
  background: var(--primary-gradient);
  color: var(--white);
  padding: 20px;
  text-align: center;
}

.card-header h3 {
  margin-bottom: 5px;
  font-size: 1.3rem;
}

.card-header p {
  opacity: 0.8;
  font-size: 0.9rem;
}

.card-body {
  padding: 25px;
}

/* 能量信息条目 */
.rental-info {
  padding: 10px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  color: var(--text-light);
}

.rental-info:last-of-type {
  margin-bottom: 15px;
}

/* Telegram容器 */
.telegram-container {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 15px;
  background-color: var(--bg-color);
  border-radius: var(--radius-sm);
  margin-top: 15px;
  color: var(--text-color);
  transition: var(--transition);
}

.telegram-container:hover {
  background-color: #edf0f4;
  transform: translateY(-2px);
}

.telegram-icon {
  width: 20px;
  height: 20px;
}

/* 输入组件 - 合并重复样式 */
.input-container {
  position: relative;
  margin: 20px 0;
}

.energy-input,
.pen-input {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  transition: border-color 0.2s ease;
}

.energy-input:focus,
.pen-input:focus {
  border-color: var(--primary-color);
}

/* 清除按钮 */
.clear-input,
.clear-pen-input {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  color: #999;
  font-size: 16px;
  padding: 5px;
}

/* 按钮组 - 合并相似样式 */
.energy-buttons,
.pen-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.energy-button,
.pen-button {
  padding: 8px 12px;
  background-color: var(--bg-color);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-color);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}

.energy-button:hover,
.pen-button:hover {
  background-color: var(--primary-light);
  color: var(--white);
  transform: translateY(-2px);
}

/* 移动端适配 */
@media (max-width: 768px) {
  .nav-menu ul {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background-color: white;
    flex-direction: column;
    padding: 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transform: translateY(-150%);
    transition: transform 0.3s ease;
    z-index: 999;
  }

  .nav-menu.expanded ul {
    transform: translateY(0);
  }

  .hamburger {
    display: flex;
  }

  .hamburger.active div:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .hamburger.active div:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active div:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  #home h1 {
    font-size: 2rem;
  }

  #home {
    min-height: 500px;
  }
}

/* 价格显示 */
.price-container {
  margin: 25px 0 20px;
}

.price-container h4 {
  margin-bottom: 10px;
  font-size: 0.95rem;
  color: #e74c3c;
  font-weight: 600;
}

.price-display {
  background-color: var(--bg-color);
  color: var(--primary-color);
  padding: 15px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1.2rem;
  text-align: center;
  margin: 15px 0;
  transition: var(--transition);
  border: 1px solid rgba(0, 0, 0, 0.05);
  cursor: pointer;
}

.price-display:hover {
  background-color: rgba(108, 92, 231, 0.1);
}

.price-display.glow-purple {
  animation: pulse 1.5s ease-in-out;
  border-color: var(--primary-color);
}

/* USDT价格显示 */
.usdt-price-display {
  background-color: var(--bg-color);
  color: #e74c3c; /* 红色显示 */
  padding: 15px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1.2rem;
  text-align: center;
  margin: 15px 0;
  transition: var(--transition);
  border: 1px solid rgba(0, 0, 0, 0.05);
  cursor: pointer;
}

.usdt-price-display:hover {
  background-color: rgba(108, 92, 231, 0.1);
}

.usdt-price-display.glow-purple {
  animation: pulse 1.5s ease-in-out;
  border-color: var(--primary-color);
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 0 rgba(108, 92, 231, 0);
  }
  50% {
    box-shadow: 0 0 10px rgba(108, 92, 231, 0.8);
  }
}

/* 地址容器 */
.address-container {
  margin-top: 25px;
}

.address-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.address-title h4 {
  font-size: 0.95rem;
  color: var(--text-light);
}

.show-qrcode-div {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  background-color: var(--bg-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.85rem;
}

.show-qrcode-div:hover {
  background-color: rgba(108, 92, 231, 0.1);
}

.address-display {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  background-color: var(--bg-color);
  padding: 15px 20px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.address-display span {
  font-weight: 500;
  font-size: 0.9rem;
  width: 100%;
  word-break: break-all;
  line-height: 1.4;
  margin-bottom: 5px;
}

.copy-actions {
  display: flex;
  align-items: center;
  width: 100%;
  justify-content: flex-start;
}

.copy-tip {
  position: static;
  color: #888;
  font-size: 0.7rem;
  opacity: 0.7;
  margin-right: 5px;
  display: inline-flex;
  align-items: center;
}

.copy-icon {
  opacity: 0.5;
  transition: var(--transition);
  margin-left: 5px;
  width: 16px;
  height: 16px;
}

.address-display:hover {
  background-color: rgba(108, 92, 231, 0.1);
  border-color: var(--primary-color);
}

.address-display:hover span {
  color: var(--primary-color);
}

.address-display:hover .copy-icon {
  opacity: 1;
}

/* 兑换标题 */
.exchange-title {
  display: flex;
  align-items: center;
  gap: 20px;
  justify-content: center;
  margin-bottom: 40px;
}

.exchange-title img {
  width: 40px;
  height: 40px;
}

.exchange-title h2 {
  margin: 0;
}

.exchange-rate {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: var(--white);
  padding: 20px;
  border-radius: var(--radius-md);
  text-align: center;
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 30px;
  box-shadow: var(--shadow-sm);
}

#currentRate {
  display: inline-block;
  padding: 5px 15px;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  margin: 0 5px;
}

.exchange-inputs {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  margin-bottom: 30px;
}

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

.input-label {
  font-size: 0.9rem;
  color: var(--text-light);
  font-weight: 500;
}

.exchange-input {
  padding: 15px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0, 0, 0, 0.1);
  font-size: 1.1rem;
  transition: var(--transition);
}

.exchange-input:focus {
  border-color: var(--primary-color);
}

.exchange-input.trx-input {
  color: #e74c3c;
}

.convert-icon {
  width: 40px;
  height: 40px;
  opacity: 0.7;
  justify-self: center;
  align-self: center;
}

.exchange-info {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 30px;
}

.exchange-info span {
  background-color: white;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-light);
  box-shadow: var(--shadow-sm);
}

/* 代理区域 */
#agent {
  background-color: #f8f9fa;
}

.agent-title {
  display: flex;
  align-items: center;
  gap: 20px;
  justify-content: center;
  margin-bottom: 40px;
}

.agent-title img {
  width: 40px;
  height: 40px;
}

.agent-title h2 {
  margin: 0;
}

.agent-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, auto);
  gap: 25px;
  margin-top: 30px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 15px;
  background-color: white;
  padding: 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.feature-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

/* 关于区域 */
.about-header {
  display: flex;
  align-items: center;
  gap: 20px;
  justify-content: center;
  margin-bottom: 40px;
}

.about-header img {
  width: 40px;
  height: 40px;
}

.about-header h2 {
  margin: 0;
}

.about-text {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 40px;
  line-height: 1.8;
  color: var(--text-light);
}

/* 特性卡片样式 */
.features-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  max-width: 1200px;
  margin: 40px auto 0;
}

/* 在PC端固定为3列2行布局 */
@media (min-width: 992px) {
  .features-container {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, auto);
  }
}

.about-feature-item {
  text-align: center;
  background-color: white;
  border-radius: 15px;
  padding: 30px 25px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.about-feature-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 30px rgba(108, 92, 231, 0.2);
  background-color: #f9f9ff;
  border-bottom: 3px solid #6c5ce7;
}

.about-feature-item img {
  width: 60px;
  height: 60px;
  margin-bottom: 20px;
  transition: transform 0.3s ease;
}

.about-feature-item:hover img {
  transform: scale(1.1);
}

.about-feature-item h4 {
  margin-bottom: 15px;
  color: #6c5ce7;
  font-size: 1.2rem;
  font-weight: 600;
}

.about-feature-item p {
  color: #666;
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
}

/* 页脚 */
footer {
  background-color: var(--text-color);
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 30px;
  text-align: center;
}

footer p {
  margin: 10px 0;
  font-size: 0.9rem;
}

footer img {
  margin: 0 auto 20px;
}

/* 模态框 */
.qrcode-modal,
.query-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  will-change: opacity, visibility;
}

.qr-container,
.query-modal-content {
  background-color: white;
  border-radius: var(--radius-md);
  width: 90%;
  max-width: 400px;
  padding: 30px;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  opacity: 0;
  transition: transform 0.4s ease, opacity 0.4s ease;
  will-change: transform, opacity;
}

.qrcode-modal.active,
.query-modal.show {
  opacity: 1;
  visibility: visible;
}

.qrcode-modal.active .qr-container,
.query-modal.show .query-modal-content {
  transform: translateY(0);
  opacity: 1;
}

.qr-container h3,
.query-modal h3 {
  color: var(--text-color);
  margin-bottom: 20px;
  font-size: 1.3rem;
}

.qr-container #qrcode {
  width: 200px;
  height: 200px;
  margin: 0 auto 20px;
}

.qr-address {
  background-color: var(--bg-color);
  padding: 15px;
  border-radius: var(--radius-sm);
  word-break: break-all;
  margin-bottom: 20px;
  font-size: 0.9rem;
  overflow-wrap: break-word;
  color: var(--text-color);
}

/* 模态框按钮 */
.close-btn {
  position: absolute;
  top: 10px;
  right: 15px;
  font-size: 24px;
  color: #999;
  background: none;
  border: none;
  cursor: pointer;
  transition: color 0.2s ease;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  line-height: 1;
}

.close-btn:hover {
  color: var(--primary-color);
}

.qr-action-btn {
  background-color: var(--primary-color);
  color: white;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 500;
  transition: var(--transition);
  display: block;
  width: 100%;
}

.qr-action-btn:hover {
  background-color: var(--primary-light);
  transform: translateY(-2px);
}

/* 查询模态框 */
.query-modal .subtitle {
  color: var(--text-light);
  margin-bottom: 25px;
  font-size: 0.9rem;
}

.steps-list {
  margin-bottom: 30px;
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  margin-bottom: 15px;
  text-align: left;
}

.step-number {
  width: 30px;
  height: 30px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.step-content {
  font-size: 0.95rem;
  color: var(--text-color);
}

.modal-buttons {
  display: flex;
  gap: 15px;
  margin-top: 20px;
}

.telegram-btn {
  flex: 1;
  display: inline-block;
  background-color: #0088cc;
  color: white;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

.telegram-btn:hover {
  background-color: #0077b5;
  transform: translateY(-2px);
  color: white;
}

.query-modal .modal-buttons .close-btn {
  position: static;
  flex: 1;
  background-color: #f1f1f1;
  color: var(--text-color);
  font-size: 1rem;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  width: auto;
  height: auto;
}

.query-modal .modal-buttons .close-btn:hover {
  background-color: #e1e1e1;
  transform: translateY(-2px);
}

/* 动画 */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  will-change: opacity, transform;
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* 媒体查询 - 按大小排序 */
@media (max-width: 992px) {
  .agent-features {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(3, auto);
  }

  .rental-container {
    display: flex;
    flex-direction: column;
  }

  .rental-second-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .exchange-inputs {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .convert-icon {
    transform: rotate(90deg);
    margin: 5px auto;
  }
}

@media (max-width: 768px) {
  .agent-features {
    grid-template-columns: 1fr;
    grid-template-rows: repeat(6, auto);
  }

  .features-container {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .about-feature-item {
    padding: 20px;
  }

  .about-feature-item img {
    width: 40px;
    height: 40px;
  }
}

@media (max-width: 480px) {
  #home h1 {
    font-size: 1.7rem;
  }

  .price-display,
  .usdt-price-display {
    font-size: 1rem;
  }

  .card-body {
    padding: 15px;
  }

  .energy-buttons,
  .pen-buttons {
    gap: 5px;
  }

  .energy-button,
  .pen-button {
    padding: 6px 10px;
  }

  .address-display {
    padding: 12px 15px 12px 12px;
  }

  .address-display span {
    font-size: 0.8rem;
    line-height: 1.5;
  }

  .copy-icon {
    top: 12px;
    right: 12px;
  }

  .exchange-rate {
    font-size: 1.1rem;
    padding: 12px;
    margin-bottom: 15px;
  }

  .exchange-input {
    padding: 10px;
    font-size: 0.95rem;
  }

  .exchange-inputs {
    margin-bottom: 20px;
    gap: 8px;
  }

  .copy-actions {
    margin-top: 2px;
  }

  .copy-tip {
    font-size: 0.65rem;
  }
}

/* 打印样式 */
@media print {
  body {
    background: white;
    color: black;
    font-size: 12pt;
  }

  .nav-menu,
  .hamburger,
  .modal-buttons,
  .telegram-btn,
  .energy-buttons,
  .pen-buttons,
  .address-display .copy-icon,
  .show-qrcode-div {
    display: none !important;
  }

  a {
    color: black;
    text-decoration: underline;
  }

  .container {
    width: 100%;
    max-width: 100%;
    padding: 0;
  }

  #home,
  .content-section {
    padding: 1cm 0;
    height: auto;
    min-height: 0;
  }

  .rental-container,
  .rental-second-row,
  .exchange-inputs,
  .features-container {
    display: block;
  }

  .rental-left,
  .rental-right,
  .rental-middle,
  .about-feature-item {
    margin-bottom: 1cm;
    break-inside: avoid;
    page-break-inside: avoid;
  }
}

/* 无障碍支持 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .animate-on-scroll {
    opacity: 1;
    transform: none;
  }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
  :root {
    --primary-color: #0000aa;
    --primary-light: #0000ff;
    --accent-color: #ffcc00;
    --text-color: #000000;
    --text-light: #333333;
    --bg-color: #ffffff;
  }

  .card-header,
  .exchange-rate,
  #home {
    background: var(--primary-color) !important;
    background-image: none !important;
  }

  a, button, input, .address-display {
    outline: 2px solid transparent;
  }

  a:focus, button:focus, input:focus, .address-display:focus {
    outline: 2px solid var(--primary-color);
  }
}

/* 复制成功提示 */
.copy-success-toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}

.copy-success-toast.show {
  opacity: 1;
  visibility: visible;
}

.floating-contact {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    font-family: sans-serif;
}

.contact-toggle-btn {
    background-color: #28a745;
    color: white;
    padding: 10px 16px;
    border-radius: 30px;
    font-size: 14px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    transition: background-color 0.3s;
    display: inline-block;
}

.contact-toggle-btn:hover {
    background-color: #218838;
}

.contact-card {
    width: 280px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    padding: 15px;
    animation: fadeIn 0.3s ease-in-out;
    display: none;
}

.contact-card h4 {
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 18px;
    color: #333;
}

.contact-card .wechat-img {
    width: 120px;
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 10px;
    display: block;
}

.contact-card .item {
    margin: 8px 0;
    font-size: 14px;
    color: #333;
    word-break: break-word;
}

.contact-card .item a {
    color: #007bff;
    text-decoration: none;
}

.contact-card .item a:hover {
    text-decoration: underline;
}

.contact-card .close-btn {
    float: right;
    font-size: 14px;
    color: #999;
    cursor: pointer;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}