@charset "UTF-8";

/* ======== 科技感配色变量 ======== */
:root {
  /* 主色调 - 科技蓝 */
  --primary: #ffffff;
  --primary-dark: #ccccff;
  --primary-light: #e0e0e0;
  --primary-glow: rgba(255, 255, 255, 0.3);
  
  /* 次要色 - 霓虹绿 */
  --secondary: #00ff88;
  --secondary-dark: #00cc6a;
  --secondary-light: #66ffaa;
  --secondary-glow: rgba(0, 255, 136, 0.3);
  
  /* 强调色 - 电光紫 */
  --accent: #ff0080;
  --accent-dark: #cc0066;
  --accent-light: #ff66b3;
  --accent-glow: rgba(255, 0, 128, 0.3);
  
  /* 背景色 - 深空色调 */
  --bg-primary: #0a0a0f;
  --bg-secondary: #1a1a2e;
  --bg-tertiary: #16213e;
  --bg-glass: rgba(26, 26, 46, 0.8);
  --bg-card: rgba(22, 33, 62, 0.9);
  
  /* 文字色 */
  --text-primary: #ffffff;
  --text-secondary: #b8c5d6;
  --text-muted: #7a8ba0;
  --text-glow: rgba(255, 255, 255, 0.9);
  
  /* 渐变色 */
  --gradient-primary: linear-gradient(135deg, #ffffff 0%, #e0e0e0 50%, #cccccc 100%);
  --gradient-secondary: linear-gradient(135deg, #e0e0e0 0%, #ffffff 50%, #cccccc 100%);
  --gradient-dark: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 50%, #16213e 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.1) 100%);
  
  /* 阴影效果 */
  --shadow-neon: 0 0 20px var(--primary-glow), 0 0 40px var(--primary-glow), 0 0 60px var(--primary-glow);
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.5);
  --shadow-deep: 0 20px 40px rgba(0, 0, 0, 0.8);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  
  /* 动画变量 */
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-bounce: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* 边框效果 */
  --border-glow: 1px solid var(--primary);
  --border-neon: 2px solid var(--primary);
}

/* ======== 全局样式重置 ======== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

*::before,
*::after {
  box-sizing: border-box;
}

/* ======== 主体样式 ======== */
body {
  font-family: 
    "JetBrains Mono",
    "Fira Code", 
    "Roboto Mono",
    "SF Mono",
    Monaco,
    "Cascadia Code",
    "Ubuntu Mono",
    monospace;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
}

/* 科技感背景动画 */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(0, 255, 136, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(255, 0, 128, 0.05) 0%, transparent 50%);
  animation: backgroundPulse 8s ease-in-out infinite alternate;
  z-index: -2;
}

@keyframes backgroundPulse {
  0% {
    opacity: 0.3;
    transform: scale(1);
  }
  100% {
    opacity: 0.6;
    transform: scale(1.1);
  }
}

/* 网格背景效果 */
body::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: gridMove 20s linear infinite;
  z-index: -1;
  opacity: 0.3;
}

@keyframes gridMove {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(50px, 50px);
  }
}

.container {

  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
  width: 100vw; /* 修改为屏幕宽度的80% */
}

main {
  display: flex;
  flex-direction: column;
  gap: 40px;
  padding: 40px 0;
}

/* ======== 高级卡片设计 ======== */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  padding: 32px;
  border-radius: 20px;
  border: var(--border-glow);
  box-shadow: var(--shadow-card);
  position: relative;
  transition: var(--transition-smooth);
  overflow: hidden;
}

/* 卡片发光边框动画 */
.card::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: var(--gradient-primary);
  border-radius: 22px;
  z-index: -1;
  opacity: 0;
  transition: var(--transition-smooth);
}

.card::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  transition: left 0.8s ease;
}

.card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-neon), var(--shadow-deep);
}

.card:hover::before {
  opacity: 1;
  animation: borderGlow 2s ease-in-out infinite alternate;
}

.card:hover::after {
  left: 100%;
}

@keyframes borderGlow {
  0% {
    filter: hue-rotate(0deg);
  }
  100% {
    filter: hue-rotate(90deg);
  }
}

/* ======== 头部区域增强 ======== */
.twitter-header {
  text-align: center;
  padding: 60px 0;
  position: relative;
}

.twitter-header::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  animation: headerPulse 3s ease-in-out infinite;
  z-index: -1;
}

@keyframes headerPulse {
  0%, 100% {
    transform: translate(-50%, -50%) scale(0.8);
    opacity: 0.3;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.2);
    opacity: 0.6;
  }
}

.twitter-link {
  display: inline-block;
  position: relative;
  padding: 20px;
  border-radius: 50%;
  background: var(--gradient-glass);
  backdrop-filter: blur(10px);
  border: var(--border-glow);
  transition: var(--transition-bounce);
}

.twitter-icon {
  width: 64px;
  height: 64px;
  transition: var(--transition-bounce);
  filter: drop-shadow(0 0 20px var(--primary-glow));
}

.twitter-link:hover {
  transform: translateY(-10px) rotate(10deg) scale(1.1);
  box-shadow: var(--shadow-neon);
}

.twitter-link:hover .twitter-icon {
  filter: drop-shadow(0 0 30px var(--primary-glow)) hue-rotate(45deg);
  animation: iconFloat 2s ease-in-out infinite;
}

@keyframes iconFloat {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-5px) rotate(5deg);
  }
}

/* ======== 历史区域科技感升级 ======== */
.history-section {
  display: block;
  text-align: center;
  padding: 48px 32px 24px;
  width: 90%;
  margin: 32px auto 0;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border-radius: 24px;
  border: var(--border-glow);
  box-shadow: var(--shadow-card);
  transition: var(--transition-smooth);
  max-width: 1800px;
  position: relative;
  overflow: hidden;
}

/* 动态扫描线效果 */
.history-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 2px;
  background: var(--gradient-primary);
  animation: scanLine 3s linear infinite;
}

@keyframes scanLine {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

/* 粒子效果 */
.history-section::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 25% 25%, var(--primary-glow) 1px, transparent 1px),
    radial-gradient(circle at 75% 75%, var(--secondary-glow) 1px, transparent 1px);
  background-size: 100px 100px, 150px 150px;
  animation: particleFloat 15s linear infinite;
  opacity: 0.3;
  z-index: -1;
}

@keyframes particleFloat {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(-100px, -100px);
  }
}

.history-section:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: var(--shadow-neon), var(--shadow-deep);
  border-color: var(--secondary);
}

/* ======== 余额区域增强 ======== */
.balance-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  position: relative;
  padding: 20px;
  background: var(--gradient-glass);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.balance-header h2 {
  font-size: 2.2rem;
  margin: 0;
  color: var(--text-primary);
  flex-grow: 1;
  font-weight: 700;
  letter-spacing: -1px;
  text-shadow: 0 0 20px var(--primary-glow);
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

#current-balance,
#symbol {
  color: var(--primary);
  font-weight: 900;
  text-shadow: 0 0 20px var(--primary-glow);
  animation: numberGlow 2s ease-in-out infinite alternate;
}

@keyframes numberGlow {
  0% {
    text-shadow: 0 0 20px var(--primary-glow);
  }
  100% {
    text-shadow: 0 0 30px var(--primary-glow), 0 0 40px var(--primary-glow);
  }
}

#period-select {
  padding: 12px 20px;
  font-size: 1.1rem;
  border: var(--border-glow);
  border-radius: 16px;
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-card);
  font-weight: 600;
  outline: none;
  min-width: 200px;
  position: relative;
  font-family: inherit;
}

#period-select:hover,
#period-select:focus {
  border-color: var(--secondary);
  box-shadow: 0 0 0 4px var(--secondary-glow), var(--shadow-card);
  transform: translateY(-2px);
}

/* ======== 图表区域科技感升级（白色透明背景） ======== */
.chart-container {
  position: relative;
  width: 100%;
  height: 480px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.1); /* 修改为白色透明背景 */
  backdrop-filter: blur(20px);
  border-radius: 20px;
  border: var(--border-glow);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

/* 图表扫描效果 */
.chart-container::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.15) 50%, transparent 100%); /* 更柔和的扫描线 */
  animation: chartScan 4s ease-in-out infinite;
  z-index: 1;
  pointer-events: none;
}

@keyframes chartScan {
  0%, 100% {
    transform: translateX(-100%);
    opacity: 0;
  }
  50% {
    transform: translateX(100%);
    opacity: 0.3;
  }
}

.chart-message {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--text-secondary);
  font-size: 1.5rem;
  text-align: center;
  font-weight: 600;
  max-width: 80%;
  z-index: 2;
  text-shadow: 0 0 10px var(--primary-glow);
}

/* ======== 按钮区域科技感升级 ======== */
.action-button {
  display: block;
  text-align: center;
  text-decoration: none;
  padding: 20px 32px;
  width: 90%;
  margin: 0 auto;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: var(--border-neon);
  border-radius: 24px;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-card);
  max-width: 1800px;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.3rem;
  position: relative;
  overflow: hidden;
  font-family: inherit;
}

/* 按钮能量流动效果 */
.action-button::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  transition: left 1s ease;
  z-index: -1;
}

.action-button::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  transition: var(--transition-smooth);
  z-index: -1;
}

.action-button:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-neon), var(--shadow-deep);
  border-color: var(--secondary);
  color: var(--bg-primary);
}

.action-button:hover::before {
  left: 0;
}

.action-button:hover::after {
  width: 300px;
  height: 300px;
}

/* ======== 消息区域科技感升级 ======== */
.message-btn {
  position: fixed;
  top: 32px;
  right: 32px;
  width: 64px;
  height: 64px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: var(--border-glow);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  box-shadow: var(--shadow-card);
  transition: var(--transition-bounce);
  overflow: hidden;
}

.message-btn::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition-smooth);
  z-index: -1;
}

.message-btn:hover {
  transform: rotate(15deg) scale(1.15);
  box-shadow: var(--shadow-neon);
  border-color: var(--secondary);
}

.message-btn:hover::before {
  opacity: 1;
  animation: buttonPulse 1s ease-in-out infinite;
}

@keyframes buttonPulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

.message-btn svg {
  width: 28px;
  height: 28px;
  fill: var(--text-primary);
  transition: var(--transition-smooth);
  position: relative;
  z-index: 2;
  filter: drop-shadow(0 0 10px var(--primary-glow));
}

.message-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(20px);
  z-index: 3000;
  flex-direction: column;
  padding: 32px;
  box-sizing: border-box;
}

.message-modal.open {
  display: flex;
  animation: modalFadeIn 0.5s ease-out forwards;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.close-btn {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  background: var(--accent);
  border: none;
  border-radius: 50%;
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
  z-index: 1;
  transition: var(--transition-bounce);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-card);
}

.close-btn:hover {
  background: var(--accent-light);
  transform: rotate(180deg) scale(1.1);
  box-shadow: 0 0 20px var(--accent-glow);
}

.message-list {
  flex: 1;
  overflow-y: auto;
  max-height: calc(100vh - 200px);
  padding: 32px 32px 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.message-item {
  padding: 24px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  color: var(--text-primary);
  animation: messageSlideIn 0.5s ease-out forwards;
  transform: translateX(50px);
  opacity: 0;
  transition: var(--transition-smooth);
}

@keyframes messageSlideIn {
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.message-item:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 0 20px var(--primary-glow), var(--shadow-card);
}

.message-item .username {
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 8px;
  font-size: 1.2rem;
  text-shadow: 0 0 10px var(--secondary-glow);
}

.message-item .content {
  font-size: 1.1rem;
  color: var(--text-secondary);
  word-break: break-word;
  line-height: 1.6;
  margin-bottom: 12px;
}

.message-item .timestamp {
  font-size: 0.9rem;
  color: var(--text-muted);
  align-self: flex-end;
  font-weight: 500;
  opacity: 0.8;
}

.message-input-container {
  position: sticky;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 24px 32px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  display: flex;
  gap: 16px;
  align-items: center;
  box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.3);
  box-sizing: border-box;
  z-index: 2;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px 20px 0 0;
}

.message-input {
  flex: 1;
  padding: 16px 24px;
  border: var(--border-glow);
  border-radius: 16px;
  outline: none;
  background: var(--bg-secondary);
  backdrop-filter: blur(10px);
  font-family: inherit;
  font-size: 1.1rem;
  color: var(--text-primary);
  transition: var(--transition-smooth);
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.2);
}

.message-input:focus {
  border-color: var(--secondary);
  box-shadow: 
    0 0 0 4px var(--secondary-glow),
    inset 0 2px 8px rgba(0, 0, 0, 0.2);
  background: var(--bg-tertiary);
}

.send-btn {
  padding: 16px 32px;
  background: var(--gradient-primary);
  border: none;
  border-radius: 16px;
  color: var(--bg-primary);
  cursor: pointer;
  font-family: inherit;
  font-weight: 700;
  font-size: 1.1rem;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.send-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.6s ease;
}

.send-btn:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: var(--shadow-neon);
}

.send-btn:hover::before {
  left: 100%;
}

/* ======== 捐赠区域科技感升级 ======== */
.donation-container {
  width: 90%;
  max-width: 1800px;
  margin: 40px auto;
  padding: 48px 32px 32px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: var(--border-glow);
  border-radius: 24px;
  box-shadow: var(--shadow-card);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.donation-container::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
  animation: progressBar 3s ease-in-out infinite;
}

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

.donation-container:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: var(--shadow-neon), var(--shadow-deep);
  border-color: var(--secondary);
}

.donation-title {
  text-align: center;
  font-size: 1.6rem;
  color: var(--text-primary);
  margin-bottom: 32px;
  line-height: 1.8;
  font-weight: 700;
  text-shadow: 0 0 20px var(--primary-glow);
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.donation-addresses {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.address-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px;
  background: var(--bg-secondary);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.address-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
  transition: left 0.8s ease;
}

.address-item:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 0 20px var(--primary-glow), var(--shadow-card);
}

.address-item:hover::before {
  left: 100%;
}

.address-label {
  font-weight: 700;
  color: var(--secondary);
  min-width: 160px;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  gap: 12px;
  text-shadow: 0 0 10px var(--secondary-glow);
}

.address-value {
  flex: 1;
  font-family: "JetBrains Mono", monospace;
  color: var(--text-secondary);
  word-break: break-all;
  cursor: pointer;
  transition: var(--transition-smooth);
  font-size: 1rem;
  padding: 12px 0;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  padding: 12px 16px;
}

.address-value:hover {
  color: var(--primary);
  background: rgba(0, 212, 255, 0.1);
  text-shadow: 0 0 10px var(--primary-glow);
}

.copy-btn {
  padding: 12px 24px;
  background: var(--gradient-secondary);
  border: none;
  border-radius: 12px;
  color: var(--bg-primary);
  cursor: pointer;
  transition: var(--transition-smooth);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.copy-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.6s ease;
}

.copy-btn:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: var(--shadow-neon);
}

.copy-btn:hover::before {
  left: 100%;
}

.copy-btn.copied {
  background: var(--gradient-primary);
  animation: copySuccess 0.6s ease-out;
}

@keyframes copySuccess {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}

/* ======== 页脚科技感升级 ======== */
footer {
  text-align: center;
  padding: 48px 0;
  color: var(--text-muted);
  font-size: 1rem;
  position: relative;
  margin-top: 60px;
}

footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 200px;
  height: 2px;
  background: var(--gradient-primary);
  transform: translateX(-50%);
  border-radius: 1px;
}

/* ======== 响应式设计增强 ======== */
@media (max-width: 1200px) {
  .history-section,
  .action-button,
  .donation-container {
    width: 95%;
  }
  
  .chart-container {
    height: 400px;
  }
  
  .container {
    padding: 0 20px;
  }
}

@media (max-width: 768px) {
  :root {
    font-size: 14px;
  }
  
  .container {
    padding: 0 16px;
  }
  
  main {
    gap: 32px;
    padding: 32px 0;
  }
  
  .card {
    padding: 24px;
    border-radius: 16px;
  }
  
  .twitter-header {
    padding: 40px 0;
  }
  
  .twitter-icon {
    width: 48px;
    height: 48px;
  }
  
  .history-section,
  .action-button,
  .donation-container {
    width: 98%;
    padding: 32px 20px 20px;
    border-radius: 20px;
  }
  
  .balance-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 28px;
    padding: 16px;
  }
  
  .balance-header h2 {
    font-size: 1.8rem;
  }
  
  #period-select {
    width: 100%;
    min-width: auto;
  }
  
  .chart-container {
    height: 320px;
  }
  
  .message-btn {
    top: 20px;
    right: 20px;
    width: 56px;
    height: 56px;
  }
  
  .message-btn svg {
    width: 24px;
    height: 24px;
  }
  
  .message-modal {
    padding: 24px 16px;
  }
  
  .message-list {
    padding: 24px 16px 0;
    max-height: calc(100vh - 160px);
    gap: 20px;
  }
  
  .message-item {
    padding: 20px;
  }
  
  .message-input-container {
    padding: 20px 16px;
    gap: 12px;
  }
  
  .message-input {
    padding: 14px 20px;
    font-size: 1rem;
  }
  
  .send-btn {
    padding: 14px 24px;
    font-size: 1rem;
  }
  
  .close-btn {
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    font-size: 20px;
  }
  
  .address-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
  }
  
  .address-label {
    min-width: auto;
    padding-bottom: 8px;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.2);
    width: 100%;
    font-size: 1.1rem;
  }
  
  .address-value {
    width: 100%;
    padding: 12px;
    font-size: 0.9rem;
  }
  
  .copy-btn {
    margin-top: 8px;
    align-self: flex-end;
    padding: 10px 20px;
  }
  
  .donation-title {
    font-size: 1.4rem;
  }
}

@media (max-width: 480px) {
  .chart-container {
    height: 280px;
  }
  
  .balance-header h2 {
    font-size: 1.6rem;
  }
  
  .donation-title {
    font-size: 1.2rem;
  }
  
  .address-label {
    font-size: 1rem;
  }
  
  .copy-btn {
    padding: 8px 16px;
    font-size: 0.9rem;
  }
  
  .action-button {
    font-size: 1.1rem;
    padding: 16px 24px;
  }
  
  .twitter-link {
    padding: 16px;
  }
  
  .twitter-icon {
    width: 40px;
    height: 40px;
  }
}

/* ======== 特殊动画效果 ======== */
@keyframes dataFlow {
  0% {
    transform: translateX(-100%) scaleX(0);
  }
  50% {
    transform: translateX(0) scaleX(1);
  }
  100% {
    transform: translateX(100%) scaleX(0);
  }
}

@keyframes hologramFlicker {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.8;
  }
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: 4px;
}