/* 全局变量 */
:root {
    --background: #0a0a0f;
    --foreground: #f5f5f7;
    --card: #12121a;
    --card-foreground: #f5f5f7;
    --border: #1e1e2e;
    --muted: #27273a;
    --muted-foreground: #8b8b9e;
    --primary: #3b82f6;
    --primary-foreground: #ffffff;
    --secondary: #1e1e2e;
    --secondary-foreground: #f5f5f7;
    --accent: #f59e0b;
    --up: #22c55e;
    --down: #ef4444;
    --radius: 12px;
  }
  
  /* 重置样式 */
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--background);
    color: var(--foreground);
    line-height: 1.6;
    min-height: 100vh;
  }
  
  .container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 16px;
  }
  
  /* Header */
  .header {
    position: sticky;
    top: 0;
    z-index: 50;
    background-color: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
  }
  
  .header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
  }
  
  .logo {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  
  .logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary);
    color: var(--primary-foreground);
    border-radius: 10px;
  }
  
  .logo h1 {
    font-size: 20px;
    font-weight: 700;
    color: var(--foreground);
  }
  
  .logo p {
    font-size: 12px;
    color: var(--muted-foreground);
  }
  
  .header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
  }
  
  .update-time {
    font-size: 14px;
    color: var(--muted-foreground);
    display: none;
  }
  
  @media (min-width: 640px) {
    .update-time {
      display: block;
    }
  }
  
  .refresh-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background-color: var(--secondary);
    color: var(--secondary-foreground);
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
  }
  
  .refresh-btn:hover {
    background-color: var(--muted);
  }
  
  .refresh-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
  }
  
  .refresh-icon.spinning {
    animation: spin 1s linear infinite;
  }
  
  @keyframes spin {
    from {
      transform: rotate(0deg);
    }
    to {
      transform: rotate(360deg);
    }
  }
  
  .btn-text {
    display: none;
  }
  
  @media (min-width: 640px) {
    .btn-text {
      display: inline;
    }
  }
  
  /* Main */
  .main {
    padding: 24px 16px;
  }
  
  /* Sections */
  .section {
    margin-bottom: 32px;
  }

  .section-description {
    margin-bottom: 12px;
    padding: 12px 16px;
    background-color: rgba(59, 130, 246, 0.05);
    border-left: 3px solid var(--primary);
    border-radius: 0 8px 8px 0;
  }

  .section-description p {
    font-size: 14px;
    color: var(--muted-foreground);
    line-height: 1.5;
  }

  .section-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
  }
  
  .section-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary);
    border-radius: 10px;
  }
  
  .section-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--foreground);
  }
  
  .section-header p {
    font-size: 12px;
    color: var(--muted-foreground);
  }
  
  /* Grid */
  .grid {
    display: grid;
    gap: 16px;
  }
  
  .grid-2 {
    grid-template-columns: repeat(1, 1fr);
  }
  
  .grid-3 {
    grid-template-columns: repeat(1, 1fr);
  }
  
  .grid-4 {
    grid-template-columns: repeat(1, 1fr);
  }
  
  @media (min-width: 640px) {
    .grid-2,
    .grid-3,
    .grid-4 {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  
  @media (min-width: 1024px) {
    .grid-3 {
      grid-template-columns: repeat(3, 1fr);
    }
    .grid-4 {
      grid-template-columns: repeat(4, 1fr);
    }
  }
  
  /* Price Card */
  .price-card {
    position: relative;
    overflow: hidden;
    padding: 16px;
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all 0.2s;
  }
  
  .price-card:hover {
    border-color: rgba(59, 130, 246, 0.5);
    box-shadow: 0 10px 40px rgba(59, 130, 246, 0.1);
  }
  
  .price-card-glow {
    position: absolute;
    right: 0;
    top: 0;
    width: 96px;
    height: 96px;
    transform: translate(32px, -32px);
    border-radius: 50%;
    opacity: 0.1;
    filter: blur(24px);
    transition: opacity 0.2s;
  }
  
  .price-card:hover .price-card-glow {
    opacity: 0.2;
  }
  
  .price-card-glow.up {
    background-color: var(--up);
  }
  .price-card-glow.down {
    background-color: var(--down);
  }
  .price-card-glow.flat {
    background-color: var(--muted);
  }
  
  .price-card-content {
    position: relative;
  }
  
  .price-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
  }
  
  .price-card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--foreground);
  }
  
  .price-card-symbol {
    font-size: 12px;
    color: var(--muted-foreground);
  }
  
  .price-card-indicator {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
  }
  
  .price-card-indicator.up {
    background-color: rgba(34, 197, 94, 0.1);
    color: var(--up);
  }
  
  .price-card-indicator.down {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--down);
  }
  
  .price-card-indicator.flat {
    background-color: var(--muted);
    color: var(--muted-foreground);
  }
  
  .price-card-price {
    margin-top: 12px;
    display: flex;
    align-items: baseline;
    gap: 8px;
  }
  
  .price-card-value {
    font-size: 24px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--foreground);
  }
  
  .price-card-unit {
    font-size: 12px;
    color: var(--muted-foreground);
  }
  
  .price-card-change {
    margin-top: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  
  .price-card-badge {
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
  }
  
  .price-card-badge.up {
    background-color: rgba(34, 197, 94, 0.1);
    color: var(--up);
  }
  
  .price-card-badge.down {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--down);
  }
  
  .price-card-badge.flat {
    background-color: var(--muted);
    color: var(--muted-foreground);
  }
  
  .price-card-period {
    font-size: 12px;
    color: var(--muted-foreground);
  }
  
  /* Bank Rates Card */
  .bank-rates-card {
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background-color: var(--card);
  }
  
  .bank-rates-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background-color: rgba(30, 30, 46, 0.3);
    border-bottom: 1px solid var(--border);
  }
  
  .bank-rates-header span:first-child {
    font-size: 14px;
    font-weight: 500;
    color: var(--foreground);
  }
  
  .bank-rates-header span:last-child {
    font-size: 12px;
    color: var(--muted-foreground);
  }
  
  .bank-rates-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background-color: var(--border);
  }
  
  @media (min-width: 640px) {
    .bank-rates-grid {
      grid-template-columns: repeat(3, 1fr);
    }
  }
  
  @media (min-width: 1024px) {
    .bank-rates-grid {
      grid-template-columns: repeat(5, 1fr);
    }
  }
  
  .bank-rate-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background-color: var(--card);
    transition: background-color 0.2s;
  }
  
  .bank-rate-item:hover {
    background-color: rgba(30, 30, 46, 0.3);
  }
  
  .bank-rate-item .label {
    font-size: 14px;
    font-weight: 500;
    color: var(--foreground);
  }
  
  .bank-rate-item .period {
    font-size: 12px;
    color: var(--muted-foreground);
  }
  
  .bank-rate-item .rate {
    margin-top: 8px;
    display: flex;
    align-items: baseline;
    gap: 2px;
  }
  
  .bank-rate-item .rate-value {
    font-size: 24px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--accent);
  }
  
  .bank-rate-item .rate-symbol {
    font-size: 14px;
    color: var(--accent);
  }
  
  .bank-rates-footer {
    padding: 8px 16px;
    text-align: center;
    background-color: rgba(30, 30, 46, 0.2);
    border-top: 1px solid var(--border);
  }
  
  .bank-rates-footer p {
    font-size: 12px;
    color: var(--muted-foreground);
  }
  
  /* Footer */
  .footer {
    margin-top: 48px;
    padding: 24px 0;
    border-top: 1px solid var(--border);
    background-color: rgba(18, 18, 26, 0.5);
  }
  
  .footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
  }
  
  @media (min-width: 640px) {
    .footer-content {
      flex-direction: row;
    }
  }
  
  .footer-content p {
    font-size: 14px;
    color: var(--muted-foreground);
  }