:root{--font:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--radius:16px;--radius-sm:10px;--gap:12px}.app{flex-direction:column;min-height:100vh;display:flex}.app.dark{--bg:#0f1115;--surface:#1a1d24;--surface-2:#232833;--text:#f2f4f8;--text-dim:#9aa3b2;--border:#2c333f;--accent:#5b8cff;--accent-soft:#5b8cff24;color:var(--text);background:var(--bg)}.app.light{--bg:#f4f6fa;--surface:#fff;--surface-2:#eef1f7;--text:#15181f;--text-dim:#68707e;--border:#e3e8f0;--accent:#2f6bff;--accent-soft:#2f6bff1a;color:var(--text);background:var(--bg)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}body{font-family:var(--font);margin:0;font-size:16px;line-height:1.5}.header{justify-content:space-between;align-items:center;padding:16px 20px 8px;display:flex}.home-link{border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface);width:fit-content;color:var(--accent);align-self:flex-start;margin:12px 20px 0;padding:8px 14px;font-size:13px;font-weight:600;text-decoration:none;display:inline-block}.home-link:hover{filter:brightness(1.08)}.brand{align-items:baseline;gap:10px;display:flex}.brand-mark{color:var(--accent);font-size:26px;line-height:1}.brand h1{letter-spacing:-.02em;margin:0;font-size:22px;font-weight:700}.brand-tag{color:var(--text-dim);font-size:12px}.icon-btn{background:var(--surface-2);color:var(--text);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;width:42px;height:42px;font-size:18px}.icon-btn:hover{filter:brightness(1.08)}.main{flex:1;width:100%;max-width:560px;margin:0 auto;padding:8px 20px 24px}.categories{scrollbar-width:none;gap:8px;padding:8px 0 16px;display:flex;overflow-x:auto}.categories::-webkit-scrollbar{display:none}.chip{border:1px solid var(--border);background:var(--surface);color:var(--text-dim);cursor:pointer;border-radius:999px;flex:none;padding:8px 16px;font-size:14px;font-weight:500;transition:all .15s}.chip-active{background:var(--accent);border-color:var(--accent);color:#fff}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);gap:var(--gap);flex-direction:column;padding:20px;display:flex;box-shadow:0 8px 30px #00000014}.rates-bar{color:var(--text-dim);align-items:center;gap:8px;font-size:12px;display:flex}.rates-dot{background:#34c759;border-radius:50%;width:8px;height:8px}.text-btn{color:var(--accent);cursor:pointer;background:0 0;border:none;margin-left:auto;padding:2px 4px;font-size:13px;font-weight:600}.amount-field{flex-direction:column;gap:4px;display:flex}.field-label{text-transform:uppercase;letter-spacing:.08em;color:var(--text-dim);font-size:12px;font-weight:600}.amount-field input{color:var(--text);letter-spacing:-.02em;font-variant-numeric:tabular-nums;background:0 0;border:none;outline:none;width:100%;padding:4px 0;font-size:40px;font-weight:700}.row{align-items:center;gap:10px;display:flex}.row select{border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface-2);min-width:0;color:var(--text);appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2399a3b0' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-position:right 12px center;background-repeat:no-repeat;flex:1;padding:12px 32px 12px 12px;font-size:15px;font-weight:500}.swap-btn{border:1px solid var(--border);background:var(--accent-soft);width:46px;height:46px;color:var(--accent);cursor:pointer;border-radius:50%;flex:none;font-size:18px}.swap-btn:hover{filter:brightness(1.1)}.result{background:var(--surface-2);border-radius:var(--radius-sm);letter-spacing:-.02em;font-variant-numeric:tabular-nums;word-break:break-word;margin-top:4px;padding:16px 18px;font-size:32px;font-weight:700}.result-unit{color:var(--text-dim);margin-left:8px;font-size:18px;font-weight:600}.hint{text-align:center;color:var(--text-dim);margin-top:16px;font-size:13px}.footer{text-align:center;color:var(--text-dim);padding:16px;font-size:12px}