:root {
  --primary: #4F46E5;
  --primary-dark: #3730A3;
  --primary-dark-rgb: 55, 48, 163;
  --primary-light: #818CF8;
  --primary-rgb: 79, 70, 229;
  --primary-deep: #1E1B4B;
  --primary-mid: #4338CA;
  --accent: #F97316;
  --accent-dark: #EA580C;
  --accent-light: #FB923C;
  --accent-rgb: 249, 115, 22;
  --indigo-light: #EEF2FF;
  --indigo-border: #A5B4FC;
  --indigo-border-rgb: 165, 180, 252;
  --bg: #F8F9FC;
  --surface: #ffffff;
  --text: #1A1F2E;
  --text-secondary: #5A6170;
  --text-tertiary: #9A9EB0;
  --white: #ffffff;
  --footer-bg: #0F0D24;
  --cross-bg: #f0f0f5;
  --kanji-red: #DC2626;
  --kanji-red-light: #FEF2F2;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Noto Sans JP", sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}