:root {
  --color-bg: #f7f3eb;
  --color-surface: #ffffff;
  --color-surface-soft: #efe8db;
  --color-text: #1f1a17;
  --color-muted: #6e655d;
  --color-line: #d9cfc2;

  --color-accent: #7b8b5a;
  --color-accent-dark: #5e6d41;

  --color-green-deep: #4f6b46;
  --color-green-main: #627c55;
  --color-green-soft: #78906c;
  --color-cream: #f7f3eb;

  --color-hero-overlay: rgba(24, 20, 16, 0.48);

  --max-width: 1200px;
  --radius: 18px;
  --radius-lg: 28px;
  --shadow: 0 12px 30px rgba(0, 0, 0, 0.06);

  --space-xs: 8px;
  --space-sm: 14px;
  --space-md: 20px;
  --space-lg: 32px;
  --space-xl: 56px;
  --space-2xl: 88px;

  --font-serif: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif;
  --font-sans: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-serif);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.85;
}

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

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

main {
  min-height: 60vh;
}

/* =========================================
   Layout
========================================= */

.container {
  width: min(100% - 32px, var(--max-width));
  margin-inline: auto;
}

.narrow {
  width: min(100% - 32px, 920px);
  margin-inline: auto;
}

/* =========================================
   Section
========================================= */

.section {
  padding: var(--space-2xl) 0;
}

.section-head {
  margin-bottom: 34px;
  display: grid;
  gap: 12px;
}

.kicker {
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
}

.section-title {
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.25;
  font-weight: 600;
}

.section-text {
  color: var(--color-muted);
  max-width: 72ch;
}

/* =========================================
   Page Hero
========================================= */

.page-hero {
  padding: 96px 0 72px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.24), rgba(255, 255, 255, 0.1)),
    var(--color-surface-soft);
  border-bottom: 1px solid var(--color-line);
}

.page-hero-title {
  font-size: clamp(34px, 5vw, 60px);
  line-height: 1.2;
  margin-bottom: 16px;
  font-weight: 600;
}

.page-hero-text {
  max-width: 70ch;
  color: var(--color-muted);
}

/* =========================================
   Typography
========================================= */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
}

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

/* =========================================
   Utility
========================================= */

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

.text-muted {
  color: var(--color-muted);
}

.bg-surface {
  background: var(--color-surface);
}

.bg-soft {
  background: var(--color-surface-soft);
}