:root {
  color-scheme: light;
  --color-bg-primary: oklch(0.985 0.003 285);
  --color-bg-secondary: oklch(0.97 0.004 285);
  --color-bg-tertiary: oklch(0.945 0.007 285);
  --color-bg-inverse: oklch(0.145 0.012 285);
  --color-text-primary: oklch(0.22 0.012 285);
  --color-text-secondary: oklch(0.43 0.014 285);
  --color-text-tertiary: oklch(0.47 0.014 285);
  --color-text-inverse: oklch(0.98 0.003 285);
  --color-border-primary: oklch(0.84 0.008 285);
  --color-border-secondary: oklch(0.89 0.006 285);
  --color-border-strong: oklch(0.67 0.015 285);
  --color-accent-primary: oklch(0.53 0.2 286);
  --color-accent-primary-hover: oklch(0.48 0.2 286);
  --color-accent-secondary: oklch(0.67 0.13 243);
  --color-status-success: oklch(0.65 0.15 154);
  --color-status-warning: oklch(0.75 0.16 81);
  --color-status-error: oklch(0.6 0.21 28);
  --color-surface-overlay: oklch(0.15 0.012 285 / .62);
  --font-family-display: "Manrope", "Noto Sans SC", ui-sans-serif, system-ui, sans-serif;
  --font-family-body: "Manrope", "Noto Sans SC", ui-sans-serif, system-ui, sans-serif;
  --font-family-cjk: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.375rem;
  --font-size-xl: 1.75rem;
  --font-size-2xl: 2.25rem;
  --font-size-3xl: 3rem;
  --font-size-4xl: 3.75rem;
  --font-size-5xl: 4.5rem;
  --font-size-6xl: 6rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-display: .98;
  --line-height-tight: 1.14;
  --line-height-normal: 1.52;
  --line-height-relaxed: 1.68;
  --letter-spacing-display: -.04em;
  --letter-spacing-tight: -.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: .09em;
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;
  --space-10: 8rem;
  --space-11: 12rem;
  --space-12: 16rem;
  --max-width-content: 72ch;
  --max-width-wide: 78rem;
  --max-width-page: 84rem;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 2px oklch(0.15 0.012 285 / .05);
  --shadow-md: 0 12px 30px oklch(0.15 0.012 285 / .09);
  --shadow-lg: 0 24px 48px oklch(0.15 0.012 285 / .15);
  --shadow-focus: 0 0 0 3px oklch(0.57 0.19 286 / .35);
  --duration-instant: 60ms;
  --duration-fast: 160ms;
  --duration-normal: 240ms;
  --duration-slow: 400ms;
  --duration-slower: 560ms;
  --easing-default: cubic-bezier(.2, 0, 0, 1);
  --easing-in: cubic-bezier(.3, 0, 1, 1);
  --easing-out: cubic-bezier(.16, 1, .3, 1);
  --easing-in-out: cubic-bezier(.4, 0, .2, 1);
  --breakpoint-sm: 375px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --z-base: 0;
  --z-sticky: 20;
  --z-modal: 40;
  --z-toast: 60;
}

[data-theme="dark"] {
  color-scheme: dark;
  --color-bg-primary: oklch(0.145 0.012 285);
  --color-bg-secondary: oklch(0.18 0.012 285);
  --color-bg-tertiary: oklch(0.215 0.014 285);
  --color-bg-inverse: oklch(0.98 0.003 285);
  --color-text-primary: oklch(0.955 0.004 285);
  --color-text-secondary: oklch(0.76 0.01 285);
  --color-text-tertiary: oklch(0.63 0.012 285);
  --color-text-inverse: oklch(0.12 0.012 285);
  --color-border-primary: oklch(0.31 0.014 285);
  --color-border-secondary: oklch(0.25 0.012 285);
  --color-border-strong: oklch(0.43 0.018 285);
  --color-accent-primary: oklch(0.72 0.17 286);
  --color-accent-primary-hover: oklch(0.78 0.15 286);
  --color-accent-secondary: oklch(0.74 0.11 243);
  --color-status-success: oklch(0.73 0.14 154);
  --color-status-warning: oklch(0.81 0.14 81);
  --color-status-error: oklch(0.7 0.19 28);
  --color-surface-overlay: oklch(0.04 0.01 285 / .68);
  --shadow-sm: 0 1px 2px oklch(0.04 0.01 285 / .25);
  --shadow-md: 0 12px 30px oklch(0.04 0.01 285 / .28);
  --shadow-lg: 0 24px 48px oklch(0.04 0.01 285 / .42);
  --shadow-focus: 0 0 0 3px oklch(0.72 0.17 286 / .38);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --color-bg-primary: oklch(0.145 0.012 285);
    --color-bg-secondary: oklch(0.18 0.012 285);
    --color-bg-tertiary: oklch(0.215 0.014 285);
    --color-bg-inverse: oklch(0.98 0.003 285);
    --color-text-primary: oklch(0.955 0.004 285);
    --color-text-secondary: oklch(0.76 0.01 285);
    --color-text-tertiary: oklch(0.63 0.012 285);
    --color-text-inverse: oklch(0.12 0.012 285);
    --color-border-primary: oklch(0.31 0.014 285);
    --color-border-secondary: oklch(0.25 0.012 285);
    --color-border-strong: oklch(0.43 0.018 285);
    --color-accent-primary: oklch(0.72 0.17 286);
    --color-accent-primary-hover: oklch(0.78 0.15 286);
  }
}

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }