:root{--bg: var(--tg-theme-bg-color, #0f1419);--text: var(--tg-theme-text-color, #e8edf4);--hint: var(--tg-theme-hint-color, #8b9cb3);--button: var(--tg-theme-button-color, #3b82f6);--button-text: var(--tg-theme-button-text-color, #fff);--secondary: var(--tg-theme-secondary-bg-color, #1a2332)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);padding:16px;min-height:100vh}.rate-card{background:var(--secondary);border-radius:16px;padding:20px;margin-bottom:12px}.rate-card .label{color:var(--hint);font-size:13px;margin-bottom:4px}.rate-card .value{font-size:32px;font-weight:700}.rate-card .icon{font-size:24px;margin-bottom:8px}.toggle-row{display:flex;align-items:center;justify-content:space-between;background:var(--secondary);border-radius:12px;padding:14px 16px;margin:16px 0}.toggle{width:48px;height:28px;border-radius:14px;background:#4b5563;position:relative;cursor:pointer;border:none;transition:background .2s}.toggle.on{background:var(--button)}.toggle:after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;transition:transform .2s}.toggle.on:after{transform:translate(20px)}.history{margin-top:20px}.history-item{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid rgba(255,255,255,.06);font-size:13px;color:var(--hint)}.tabs{display:flex;gap:8px;margin-bottom:20px}.tab{flex:1;padding:10px;border:none;border-radius:10px;background:var(--secondary);color:var(--text);font-size:14px;cursor:pointer}.tab.active{background:var(--button);color:var(--button-text)}.form-group{margin-bottom:16px}.form-group label{display:block;color:var(--hint);font-size:13px;margin-bottom:6px}.form-group input,.form-group select{width:100%;padding:12px;border-radius:10px;border:1px solid rgba(255,255,255,.1);background:var(--secondary);color:var(--text);font-size:16px}.method-btns{display:flex;gap:8px}.method-btn{flex:1;padding:14px;border-radius:12px;border:2px solid transparent;background:var(--secondary);color:var(--text);font-size:15px;cursor:pointer}.method-btn.active{border-color:var(--button)}.cny-preview{text-align:center;padding:20px;background:var(--secondary);border-radius:12px;margin:16px 0}.cny-preview .amount{font-size:28px;font-weight:700;color:var(--button)}.submit-btn{width:100%;padding:14px;border:none;border-radius:12px;background:var(--button);color:var(--button-text);font-size:16px;font-weight:600;cursor:pointer}.submit-btn:disabled{opacity:.5}.error{color:#ef4444;text-align:center;padding:20px}.loading{text-align:center;padding:40px;color:var(--hint)}