/* 入口(index.html)と info(info.html)の共通の見た目。ベージュの地に深い緑。余白を広く取り、飾りは少なく */
/* 構成: 細い見出しの帯 → 1 段の本文(最大 1120px)。絵は大きな正方形 1 枚だけ */
:root {
  color-scheme: light;
  --bg: #f2ede2;          /* ベージュ */
  --paper: #f8f5ee;
  --ink: #273126;         /* 緑がかった墨 */
  --muted: #6c7264;
  --line: #ddd5c4;
  --green: #3f6b45;       /* 森の緑 */
  --green-soft: #e3e8d6;
  --font-display: 'Outfit', 'Zen Maru Gothic', system-ui, sans-serif;
  --font-body: 'Zen Maru Gothic', 'Hiragino Maru Gothic ProN', 'Yu Gothic UI', system-ui, sans-serif;
  --step--1: 0.8125rem;
  --step-0: 1rem;
  --step-1: 1.2rem;
  --step-2: clamp(1.5rem, 3.4vw, 2.1rem);
  --gutter: clamp(20px, 5vw, 56px);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 var(--step-0)/1.9 var(--font-body); letter-spacing: 0.04em; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3 { text-wrap: balance; margin: 0; line-height: 1.4; font-weight: 500; }
p { margin: 0; }
.wrap { max-width: 1120px; margin: 0 auto; padding-inline: var(--gutter); }
.eyebrow { font: 500 var(--step--1)/1 var(--font-display); letter-spacing: 0.24em; text-transform: uppercase; color: var(--green); }
:focus-visible { outline: 2px solid var(--green); outline-offset: 4px; }

/* タイトルの文字: 緑の濃淡がゆっくり移ろう */
.title-shift {
  background: linear-gradient(100deg, #2f5d3a 0%, #6f9a5e 25%, #a5bf78 45%, #4f7f4a 65%, #2f5d3a 100%);
  background-size: 300% 100%; -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shift 14s ease-in-out infinite alternate;
}
@keyframes shift { from { background-position: 0% 50%; } to { background-position: 100% 50%; } }

/* ---- 見出しの帯 ---- */
.site-head { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5; background: color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter: blur(10px); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 20px; }
.wordmark { font: 600 0.95rem/1 var(--font-display); letter-spacing: 0.26em; text-decoration: none; }
.site-nav { display: flex; align-items: center; gap: clamp(16px, 3vw, 36px); font: 500 var(--step--1)/1 var(--font-display); letter-spacing: 0.2em; }
.site-nav a, .site-nav button { text-decoration: none; color: var(--muted); padding: 6px 0; background: none; border: 0; font: inherit; letter-spacing: inherit; cursor: pointer; }
.site-nav a:hover, .site-nav button:hover, .site-nav a[aria-current="page"] { color: var(--ink); }
@media (max-width: 600px) { .site-nav .wide { display: none; } }

/* ==== ボタン: 主な行き先だけ緑の丸い札。ほかは矢印つきの文字 ==== */
.btn { display: inline-flex; align-items: center; gap: 14px; min-height: 52px; padding: 0 28px; border-radius: 999px; background: var(--green); color: var(--paper);
  font: 500 0.95rem/1 var(--font-body); letter-spacing: 0.12em; text-decoration: none; transition: background 0.3s ease, transform 0.3s ease; }
.btn svg { width: 16px; height: 16px; transition: transform 0.3s ease; }
.btn:hover { background: #335a39; }
.btn:hover svg { transform: translateX(4px); }
.text-link { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-size: 0.92rem; letter-spacing: 0.1em; padding-block: 6px; border-bottom: 1px solid var(--line); transition: border-color 0.3s ease; }
.text-link:hover { border-color: var(--green); }
.text-link svg { width: 14px; height: 14px; }
@media (prefers-reduced-motion: reduce) { .btn, .btn svg, .title-shift { transition: none; animation: none; } }

/* ---- 足もと ---- */
.site-foot { margin-top: clamp(80px, 12vw, 160px); }
.site-foot .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; padding-block: 36px; border-top: 1px solid var(--line); font-size: var(--step--1); color: var(--muted); }
.site-foot a { text-decoration: none; }
.site-foot a:hover { color: var(--ink); }