.site-footer{width:100%;padding:14px 16px calc(14px + env(safe-area-inset-bottom));color:#8c8c8c;text-align:center;flex-shrink:0;font-size:12px;line-height:20px}.site-footer__link{color:inherit;text-decoration:none;transition:color .2s}.site-footer__link:hover,.site-footer__link:focus-visible{color:#1677ff}.site-footer__link:focus-visible{outline-offset:3px;border-radius:2px;outline:2px solid #1677ff4d}.admin-layout{background:#fff;flex-direction:column;min-height:100dvh;display:flex}.admin-layout__content{flex:1 0 auto;min-width:0}.letter-page{background:#f5f5f5;flex-direction:column;width:100%;height:100dvh;display:flex;overflow:hidden}.letter-page--empty{background:radial-gradient(circle at 15% 10%,#1677ff1f,#0000 36%),radial-gradient(circle at 90% 85%,#4d86ff1a,#0000 32%),linear-gradient(145deg,#f7faff 0%,#f3f6fb 55%,#f8f9fc 100%)}.letter-empty-state{flex:1;justify-content:center;align-items:center;min-height:0;padding:32px 20px 16px;display:flex}.letter-empty-card{text-align:center;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#ffffffe0;border:1px solid #ffffffbf;border-radius:24px;width:min(100%,420px);padding:44px 32px 40px;box-shadow:0 20px 60px #2b4b7d1f}.letter-empty-card h1{color:#1f2d3d;letter-spacing:.02em;margin:24px 0 12px;font-size:24px;font-weight:600;line-height:1.4}.letter-empty-card p{color:#748094;margin:0;font-size:14px;line-height:1.8}.letter-empty-icon{color:#1677ff;background:linear-gradient(145deg,#eef6ff,#e1efff);border-radius:22px;justify-content:center;align-items:center;width:76px;height:76px;display:inline-flex;box-shadow:inset 0 0 0 1px #1677ff14}.letter-empty-icon svg{fill:#1677ff14;stroke:currentColor;stroke-width:2.5px;stroke-linecap:round;stroke-linejoin:round;width:42px;height:42px}.pdf-viewport{-webkit-overflow-scrolling:touch;touch-action:pan-y;flex:1;width:100%;height:100%;min-height:0;position:relative;overflow:hidden auto}.pdf-viewport--error{flex-direction:column;display:flex}.pdf-scale{transform-origin:top;will-change:transform;width:100%;transition:transform 50ms ease-out}.pdf-error{color:#ff4d4f;text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;min-height:0;padding:0 16px;display:flex}.pdf-error-detail{color:#999;word-break:break-all;margin-top:8px;font-size:12px}.pdf-footer{background:#f5f5f5;padding:12px 12px 0}.pdf-footer .site-footer{padding-bottom:calc(14px + env(safe-area-inset-bottom))}.pdf-download-btn{color:#fff;cursor:pointer;background:#1677ff;border:none;border-radius:4px;width:100%;height:44px;font-size:16px}.pdf-loading-overlay{color:#666;z-index:10;background:#f5f5f5;flex-direction:column;justify-content:center;align-items:center;gap:12px;display:flex;position:absolute;inset:0}.pdf-spinner{border:4px solid #e0e0e0;border-top-color:#1677ff;border-radius:50%;width:36px;height:36px;animation:.9s linear infinite pdf-spin}@keyframes pdf-spin{to{transform:rotate(360deg)}}@media (height<=560px){.letter-empty-state{padding-top:16px}.letter-empty-card{padding:24px}.letter-empty-card h1{margin-top:16px}.letter-empty-icon{border-radius:18px;width:60px;height:60px}.letter-empty-icon svg{width:34px;height:34px}}