:root{color-scheme:dark;--color-surface-window: #0b0d10;--color-surface-chrome: #101318;--color-surface-raised: #15191f;--color-surface-control: rgba(255, 255, 255, .035);--color-surface-control-hover: rgba(255, 255, 255, .065);--color-text-primary: rgba(255, 255, 255, .92);--color-text-secondary: rgba(255, 255, 255, .64);--color-text-tertiary: rgba(255, 255, 255, .42);--color-stroke-subtle: rgba(255, 255, 255, .08);--color-stroke-strong: rgba(255, 255, 255, .14);--color-accent: #397bff;--color-accent-hover: #4f89ff;--color-accent-soft: rgba(57, 123, 255, .16);--color-success: #42e6c6;--color-focus-ring: rgba(91, 124, 250, .46);--color-glass-tint: rgba(15, 17, 20, .4);--color-glass-fallback: rgba(15, 17, 20, .92);--color-shadow-product: rgba(0, 0, 0, .36);--color-mask-opaque: #000;--font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Segoe UI", "Microsoft YaHei UI", "Noto Sans SC", sans-serif;--type-display-size: 40px;--type-display-line: 52px;--type-section-size: 32px;--type-section-line: 42px;--type-list-size: 18px;--type-list-line: 26px;--type-body-size: 16px;--type-body-line: 26px;--type-control-size: 15px;--type-control-line: 20px;--type-meta-size: 13px;--type-meta-line: 20px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-16: 64px;--space-20: 80px;--space-24: 96px;--radius-button: 8px;--radius-media: 10px;--radius-panel: 14px;--layout-max: 1180px;--layout-gutter: 24px;--layout-gutter-mobile: 16px;--motion-fast: .16s;--motion-standard: .22s;--easing-standard: cubic-bezier(.2, .8, .2, 1);--material-reading-width: 58%;--material-reading-blur: 36px;--material-reading-saturate: 1.2;--material-reading-feather: 96px;--elevation-product: 0 24px 64px var(--color-shadow-product)}*,*:before,*:after{box-sizing:border-box}html{min-width:320px;background:var(--color-surface-window);scroll-behavior:smooth}body{min-width:320px;min-height:100vh;margin:0;overflow-x:hidden;background:var(--color-surface-window);color:var(--color-text-primary);font-family:var(--font-sans);font-size:var(--type-body-size);line-height:var(--type-body-line);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}button,a{-webkit-tap-highlight-color:transparent}button,input,textarea,select{font:inherit}a{color:inherit;text-decoration:none}img,svg{display:block}img{max-width:100%}h1,h2,h3,p,figure,ol,ul{margin:0}ol,ul{padding:0;list-style:none}:focus-visible{outline:2px solid var(--color-focus-ring);outline-offset:3px}::selection{background:var(--color-accent-soft);color:var(--color-text-primary)}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.section-shell{width:min(calc(100% - 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