/* CSS Variables for TianSheng Medical Equipment Co., Ltd. Website */

:root {
    /* --- Color Palette (Modern Professional, Tech-focused) --- */
    --color-primary: #1976d2; /* Medical Blue - Main brand color */
    --color-primary-dark: #0d47a1; /* Deeper blue for hover/active */
    --color-secondary: #37474f; /* Professional gray for text */
    --color-accent: #43a047; /* Health green highlight */
    --color-highlight: #e53935; /* Medical red accent */
    --color-background-light: #f4f8fb; /* Gentle light background */
    --color-background-white: #ffffff; /* Pure white for surfaces */
    --color-text-dark: #1f2a37; /* Headline color */
    --color-text-muted: #5c6b77; /* Secondary text */
    --color-text-light: #f8f9fa; /* Light text on dark */
    --color-border: #dae4ed; /* Subtle divider */
    --gradient-hero: linear-gradient(135deg, rgba(25,118,210,0.9), rgba(6,71,137,0.95));
    --gradient-card: linear-gradient(135deg, rgba(25,118,210,0.08), rgba(67,160,71,0.08));

    /* --- Typography --- */
    --font-family-main: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Helvetica, Arial, sans-serif;
    --font-family-heading: "SimHei", "Microsoft YaHei", sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.75rem;
    --line-height-base: 1.68;

    /* --- Spacing --- */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 48px;
    --spacing-xxl: 80px;

    /* --- Border Radius --- */
    --border-radius-sm: 4px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
    --border-radius-pill: 999px;

    /* --- Shadow --- */
    --box-shadow-sm: 0 10px 30px rgba(15, 46, 83, 0.08);
    --box-shadow-md: 0 20px 40px rgba(8, 44, 80, 0.12);
    --box-shadow-lg: 0 40px 80px rgba(4, 35, 76, 0.14);

    /* --- Layout --- */
    --max-width: 1200px;
    --header-height: 94px;

    /* --- Motion --- */
    --transition-fast: 0.2s ease;
    --transition-base: 0.35s ease;
    --transition-slow: 0.6s ease;
}