.letter-container{position:relative;border:1px solid #f1f1f1;border-radius:1rem;padding:3rem;margin:5rem auto;max-width:48rem}.dark .letter-container{background:linear-gradient(180deg,#1a1a1a 0,#0f0f0f)}.handwriting-text{line-height:2.2;letter-spacing:.5px;margin-bottom:2rem}.letter-content{position:relative}.letter-title{text-align:center;margin-bottom:2rem;font-size:1.875rem;font-weight:700}.support-note{margin-bottom:2rem;border:1px solid rgba(229,231,235,.8);border-radius:1rem;padding:1.25rem;background:rgba(249,250,251,.7)}.dark .support-note{border-color:rgba(75,85,99,.8);background:rgba(31,41,55,.35)}.wechat-qr-wrapper{display:flex;flex-direction:column;align-items:center;gap:.75rem;padding:.5rem 0}.wechat-qr-image{width:200px;height:200px;border-radius:.75rem;background:#ffffff;padding:.5rem;box-shadow:0 4px 12px -2px rgba(0,0,0,.12)}.wechat-caption{font-size:.95rem;font-weight:600;color:#374151;letter-spacing:.5px}.dark .wechat-caption{color:#e5e7eb}@media (max-width:768px){.letter-container{padding:2rem;margin:0 1rem}.handwriting-text{font-size:1rem;line-height:2}.wechat-qr-image{width:160px;height:160px}}