/* ================================
   CSS RESET
================================ */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 16px;
  font-weight: 400;
  color: #0F172A;
  background-color: #ffffff;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* ================================
   CSS VARIABLES
================================ */

:root {
  /* Colors */
  --color-dark:        #0F172A;
  --color-white:       #FFFFFF;
  --color-gray-light:  #F8F8F6;
  --color-gray-border: #D3D1C7;
  --color-gray-muted:  #888780;
  --color-gray-bg:     #F1EFE8;
  --color-green:       #639922;
  --color-green-light: #C0DD97;
  --color-green-pale:  #EAF3DE;
  --color-green-dark:  #3B6D11;
  --color-card-dark:   #1E293B;
  --color-card-border: #2D3F55;

  /* Typography */
  --font-main: 'Noto Sans JP', sans-serif;

  /* Spacing */
  --section-padding-desktop: 96px;
  --section-padding-mobile:  56px;
  --container-max:           1100px;
  --container-side-desktop:  40px;
  --container-side-mobile:   20px;

  /* Border radius */
  --radius-card:   12px;
  --radius-btn:    6px;
  --radius-tag:    6px;

  /* Transitions */
  --transition: all 0.25s ease;
}

/* ================================
   COMMON LAYOUT
================================ */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-side-desktop);
}

.section-padding {
  padding: var(--section-padding-desktop) 0;
}

/* ================================
   COMMON TYPOGRAPHY
================================ */

.eyebrow {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-green);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 12px;
}

.section-title {
  font-size: 40px;
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 15px;
  font-weight: 400;
  color: var(--color-gray-muted);
  line-height: 1.7;
  margin-bottom: 56px;
}

.section-header {
  text-align: center;
}

/* ================================
   RESPONSIVE
================================ */

@media (max-width: 767px) {
  .container {
    padding: 0 var(--container-side-mobile);
  }

  .section-padding {
    padding: var(--section-padding-mobile) 0;
  }

  .section-title {
    font-size: 28px;
  }

  .section-subtitle {
    margin-bottom: 36px;
  }
}