*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { min-height: 100vh; color: #111; background-color: #fff; background-image: linear-gradient(rgba(37,99,235,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(37,99,235,.07) 1px,transparent 1px); background-size: 40px 40px; animation: gridMove 20s linear infinite; font-family: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif; }
@keyframes gridMove { from { background-position: 0 0; } to { background-position: 40px 40px; } }
.site-header { padding: 24px 16px 16px; text-align: center; border-bottom: 1px solid #eee; }
.logo-icon { width: 150px; height: 150px; margin: 0 auto 10px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; }
.logo-mark { width: 104px; height: 104px; display: grid; place-items: center; color: #fff; background: linear-gradient(145deg,#1d4ed8,#2563eb 58%,#60a5fa); border: 4px solid #dbeafe; border-radius: 30px 30px 38px 38px; box-shadow: 0 12px 26px rgba(37,99,235,.24); font-family: "STKaiti","KaiTi","Microsoft YaHei",sans-serif; font-size: 62px; font-weight: 900; line-height: 1; }
.logo-brand { color: #1d4ed8; font-size: 17px; font-weight: 900; letter-spacing: 1px; white-space: nowrap; }
.logo-main { color: #111; font-size: clamp(18px,5vw,26px); font-weight: 900; letter-spacing: 1px; }
.logo-sub { margin-top: 6px; color: #111; font-size: clamp(16px,4vw,22px); font-weight: 800; }
.contact-section { padding: 20px 16px; display: flex; justify-content: center; border-bottom: 2px solid #f0f0f0; }
.contact-inner { width: 100%; max-width: 720px; }
.contact-items { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px 20px; }
.contact-chip { display: flex; align-items: center; gap: 12px; color: #111; cursor: default; text-decoration: none; }
.contact-chip.tg-chip { cursor: pointer; }
.tg-chip-hint { margin-top: 2px; display: inline-block; color: #2aabee; font-size: 11px; font-weight: 600; transform-origin: left center; animation: tgBreath 2s ease-in-out infinite; }
@keyframes tgBreath { 0%,100% { transform: scale(1); } 50% { transform: scale(1.18); } }
.chip-icon-img { width: 48px; height: 48px; object-fit: contain; flex-shrink: 0; }
.chip-val { color: #111; font-size: clamp(15px,4vw,20px); font-weight: 700; word-break: break-all; }
.exchange-section { width: 100%; max-width: 900px; margin: 0 auto; padding: 16px 12px 48px; }
.section-title { margin-bottom: 4px; color: #111; font-size: clamp(20px,5vw,28px); font-weight: 900; text-align: center; }
.section-subtitle { margin-bottom: 16px; color: #e53e3e; font-size: clamp(15px,4vw,20px); font-weight: 700; text-align: center; }
.exchange-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 10px 16px; }
.exchange-item { padding: 8px 4px; display: flex; align-items: flex-start; gap: 10px; color: #111; border-bottom: 1px solid #f0f0f0; border-radius: 4px; }
.tg-chip:focus-visible { outline: 2px solid #2563eb; outline-offset: 3px; }
.item-icon { width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; overflow: hidden; flex-shrink: 0; background: #eee; border-radius: 10px; font-size: 22px; font-weight: 700; }
.item-icon img { width: 100%; height: 100%; object-fit: cover; border-radius: 10px; }
.item-info { min-width: 0; flex: 1; }
.item-name-line { font-size: clamp(13px,3.5vw,16px); font-weight: 800; line-height: 1.3; }
.item-rate { color: #e53e3e; }
.item-desc { margin-top: 2px; color: #666; font-size: clamp(11px,2.8vw,13px); line-height: 1.4; word-break: break-all; }
.site-footer { padding: 16px; color: #999; border-top: 1px solid #eee; font-size: 13px; text-align: center; }
@media (max-width: 480px) { .contact-items { gap: 10px 12px; } .chip-icon-img,.item-icon { width: 40px; height: 40px; } .exchange-grid { gap: 6px 10px; } }
@media (prefers-reduced-motion: reduce) { body,.tg-chip-hint { animation: none; } }