:root{--primary-color: #007AFF;--primary-dark: #0056CC;--bg-color: #FFFFFF;--bg-secondary: #F5F5F7;--text-primary: #1D1D1F;--text-secondary: #6E6E73;--border-color: #E5E5E7;--success-color: #34C759;--warning-color: #FF9500;--error-color: #FF3B30}@media(prefers-color-scheme:dark){:root{--primary-color: #0A84FF;--primary-dark: #409CFF;--bg-color: #1C1C1E;--bg-secondary: #2C2C2E;--text-primary: #F5F5F7;--text-secondary: #8E8E93;--border-color: #38383A}}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-primary);line-height:1.6;font-size:16px}[dir=rtl]{text-align:right}a{color:var(--primary-color);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:800px;margin:0 auto;padding:40px 24px}.header{text-align:center;padding:60px 24px 40px;background:linear-gradient(180deg,var(--bg-secondary) 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