:root{--bg: #0f172a;--surface: #1e293b;--surface-2: #334155;--border: #334155;--text: #e2e8f0;--text-muted: #94a3b8;--accent: #38bdf8;--accent-strong: #0ea5e9;--danger: #f87171;--radius: 14px;--shadow: 0 10px 30px rgba(0, 0, 0, .35)}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:radial-gradient(1200px 600px at 50% -10%,#15233f,var(--bg));color:var(--text);min-height:100vh}.app{max-width:880px;margin:0 auto;padding:48px 24px}.app__header{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:24px}.app__title{font-size:1.6rem;margin:0;letter-spacing:-.02em}.app__actions{display:flex;align-items:center;gap:14px}.app__updated{color:var(--text-muted);font-size:.85rem}.btn{background:var(--accent-strong);color:#04121f;border:none;border-radius:10px;padding:10px 18px;font-size:.95rem;font-weight:600;cursor:pointer;transition:background .15s ease,transform .05s ease}.btn:hover{background:var(--accent)}.btn:active{transform:translateY(1px)}.countdown{margin-bottom:28px}.countdown__track{height:8px;background:var(--surface-2);border-radius:999px;overflow:hidden}.countdown__fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-strong));border-radius:999px;transition:width .2s linear}.countdown__label{margin-top:8px;font-size:.82rem;color:var(--text-muted)}.app__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}@media (max-width: 640px){.app__grid{grid-template-columns:1fr}}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);min-height:130px}.card__title{margin:0 0 16px;font-size:.95rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em}.card__balance{display:flex;align-items:baseline;gap:10px}.card__currency{font-size:1.1rem;font-weight:600;color:var(--accent)}.card__amount{font-size:2.4rem;font-weight:700;letter-spacing:-.02em}.card__error{display:flex;align-items:center;gap:10px;color:var(--danger);font-size:.95rem}.card__error-icon{font-size:1.2rem}.card__skeleton{display:flex;flex-direction:column;gap:12px}.skeleton{background:linear-gradient(90deg,var(--surface-2) 25%,#3f4d63 37%,var(--surface-2) 63%);background-size:400% 100%;border-radius:8px;animation:shimmer 1.4s ease infinite}.skeleton--amount{height:38px;width:60%}.skeleton--label{height:16px;width:35%}@keyframes shimmer{0%{background-position:100% 0}to{background-position:0 0}}