*{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #F2F2F7;--bg-card: #FFFFFF;--bg-input: #FFFFFF;--text-primary: #000000;--text-secondary: #3C3C43;--text-tertiary: #8E8E93;--border-color: #E5E5EA;--border-input: #C7C7CC;--accent-color: #007AFF;--accent-hover: #0056b3;--success-bg: #e8f5e9;--success-text: #34C759;--error-bg: #ffebee;--error-text: #FF3B30}body.dark-theme{--bg-primary: #000000;--bg-card: #1C1C1E;--bg-input: #2C2C2E;--text-primary: #FFFFFF;--text-secondary: #EBEBF5;--text-tertiary: #AEAEB2;--border-color: #38383A;--border-input: #48484A;--accent-color: #0A84FF;--accent-hover: #409cff;--success-bg: #1b3d1f;--success-text: #34C759;--error-bg: #3d1f1f;--error-text: #FF3B30}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg-primary);min-height:100vh;transition:background-color .3s ease}.support-page{max-width:600px;margin:0 auto;padding:40px 20px}.support-page.embedded{padding-top:20px}.language-selector{display:flex;justify-content:flex-end;align-items:center;gap:10px;margin-bottom:20px}.language-selector label{color:var(--text-secondary);font-size:14px}.language-selector select{padding:8px 12px;border-radius:6px;border:1px solid var(--border-input);background:var(--bg-card);color:var(--text-primary);font-size:14px;cursor:pointer}.header{text-align:center;color:var(--text-primary);margin-bottom:40px}.header h1{font-size:2rem;margin-bottom:8px;color:var(--accent-color)}.header p{font-size:1rem;color:var(--text-secondary)}section{background:var(--bg-card);border-radius:8px;padding:24px;margin-bottom:20px;border:1px solid var(--border-color);transition:background-color .3s ease,border-color .3s ease}section h2{color:var(--text-primary);margin-bottom:12px;font-size:1.1rem;font-weight:600}section p{color:var(--text-secondary);line-height:1.6;font-size:14px}.email-box{display:flex;align-items:center;gap:12px;margin-top:16px;padding:12px;background:var(--bg-input);border-radius:6px;border:1px solid var(--border-color);flex-wrap:wrap}.email{font-family:monospace;font-size:14px;color:var(--text-primary);flex:1;word-break:break-all}.copy-btn{padding:8px 16px;background:var(--accent-color);color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:13px;transition:background .2s}.copy-btn:hover{background:var(--accent-hover)}.feedback-section .email-input{width:100%;padding:12px;border:1px solid var(--border-input);border-radius:6px;font-size:14px;font-family:inherit;margin-top:8px;background:var(--bg-card);color:var(--text-primary);transition:border-color .2s}.feedback-section .email-input:focus{outline:none;border-color:var(--accent-color)}.feedback-section textarea{width:100%;padding:12px;border:1px solid var(--border-input);border-radius:6px;font-size:14px;resize:vertical;font-family:inherit;margin-top:8px;background:var(--bg-card);color:var(--text-primary);transition:border-color .2s}.feedback-section textarea:focus{outline:none;border-color:var(--accent-color)}.feedback-section textarea::placeholder,.feedback-section .email-input::placeholder{color:var(--text-tertiary)}.submit-btn{width:100%;padding:12px;background:var(--accent-color);color:#fff;border:none;border-radius:4px;font-size:14px;cursor:pointer;margin-top:12px;transition:background .2s}.submit-btn:hover:not(:disabled){background:var(--accent-hover)}.submit-btn:disabled{opacity:.7;cursor:not-allowed}.loading-spinner{display:inline-block;width:14px;height:14px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite;margin-right:8px;vertical-align:middle}@keyframes spin{to{transform:rotate(360deg)}}.status-message{margin-top:12px;padding:10px;border-radius:4px;background:var(--success-bg);color:var(--success-text);text-align:center;font-size:14px}.status-message.error{background:var(--error-bg);color:var(--error-text)}@media (max-width: 480px){.header h1{font-size:1.5rem}section{padding:16px}.email-box{flex-direction:column;align-items:stretch}.copy-btn{width:100%}}