@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;700&family=Noto+Sans+JP:wght@400;500;700&display=swap');

:root {
  /* Colors */
  --color-base: #ece0d5;
  --color-main: #1e344d;
  --color-accent: #f08000;
  --color-white: #ffffff;
  --color-text: #1e344d;
  
  /* Fonts */
  --font-jp: "Yu Gothic", "YuGothic", "Noto Sans JP", sans-serif;
  --font-heading: "Ryumin", "Hiragino Mincho ProN", "HGS Mincho E", "MS Mincho", serif;
  --font-en: "Montserrat", sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;
  
  /* Breakpoints */
  --bp-mobile: 375px;
  --bp-tablet: 768px;
  --bp-desktop: 1024px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-base);
  color: var(--color-text);
  font-family: var(--font-jp);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: var(--spacing-sm);
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.3s ease;
}

a:hover {
  opacity: 0.7;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.btn {
  display: inline-block;
  padding: 1rem 3rem;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-en);
  font-weight: 700;
  border-radius: 50px;
  letter-spacing: 0.1em;
  box-shadow: 0 4px 10px rgba(240, 128, 0, 0.3);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(240, 128, 0, 0.4);
  opacity: 1;
}

.section-title {
  font-size: 2rem;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  color: var(--color-main);
}

.section-title span {
  display: block;
  font-family: var(--font-en);
  font-size: 1rem;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
  letter-spacing: 0.2em;
}