:root{--color-primary: #007AFF;--color-primary-dark: #0051D0;--color-secondary: #5856D6;--color-success: #34C759;--color-warning: #FF9500;--color-error: #FF3B30;--color-text: #1C1C1E;--color-text-secondary: #6D6D70;--color-background: #FFFFFF;--color-surface: #F2F2F7;--color-border: #C7C7CC;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .04);--shadow-md: 0 4px 16px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .12);--radius: 12px;--radius-lg: 16px}*{box-sizing:border-box;margin:0;padding:0}html{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--color-background);color:var(--color-text);scroll-behavior:smooth}body{line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.container{max-width:1200px;margin:0 auto;padding:0 20px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 24px;border-radius:var(--radius);font-weight:600;text-decoration:none;transition:all .2s 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ease;text-align:left}.lang-option[data-astro-cid-3ef6ksr2]:hover{background:var(--color-surface)}.download-btn[data-astro-cid-3ef6ksr2]{white-space:nowrap}.mobile-menu-btn[data-astro-cid-3ef6ksr2]{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:8px}.mobile-menu-btn[data-astro-cid-3ef6ksr2] span[data-astro-cid-3ef6ksr2]{width:24px;height:2px;background:var(--color-text);border-radius:1px;transition:all .3s ease}.mobile-menu-btn[data-astro-cid-3ef6ksr2].active span[data-astro-cid-3ef6ksr2]:nth-child(1){transform:rotate(45deg) translate(6px,6px)}.mobile-menu-btn[data-astro-cid-3ef6ksr2].active span[data-astro-cid-3ef6ksr2]:nth-child(2){opacity:0}.mobile-menu-btn[data-astro-cid-3ef6ksr2].active span[data-astro-cid-3ef6ksr2]:nth-child(3){transform:rotate(-45deg) translate(6px,-6px)}@media (max-width: 768px){.nav[data-astro-cid-3ef6ksr2]{padding:12px 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