/* 特定非営利活動法人DiNA 共通スタイル（2026-10 新サイト）
   色はロゴ（黒 #231815・橙 #F39800・黄 #FFD35C）から取る。
   フレームワーク・ビルドなし。モバイル優先。 */

:root {
  --ink: #231815;        /* ロゴの黒 */
  --ink-2: #4a403b;      /* 本文の濃い茶灰 */
  --ink-3: #6f655f;      /* 補足文 */
  --orange: #f39800;     /* ロゴの橙（装飾・ボタン背景） */
  --orange-deep: #b85f00;/* 文字リンク用（白地で 5:1 以上） */
  --yellow: #ffd35c;     /* ロゴの黄（薄い装飾） */
  --cream: #fbf8f2;      /* 交互セクションの背景 */
  --sand: #f1ece2;       /* フッター・表の見出し */
  --line: #e4ddd0;       /* 罫線 */
  --white: #ffffff;
  --max: 1100px;
  --radius: 10px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", "Meiryo", sans-serif;
  color: var(--ink-2);
  background: var(--white);
  line-height: 1.9;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-wrap: anywhere;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--orange-deep); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--ink); }
[hidden] { display: none !important; }
h1, h2, h3, h4 { color: var(--ink); line-height: 1.5; margin: 0 0 0.6em; letter-spacing: 0.02em; }
h1 { font-size: 1.75rem; }
h2 { font-size: 1.45rem; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
ul, ol { padding-left: 1.4em; margin: 0 0 1em; }
li { margin-bottom: 0.3em; }
small { font-size: 0.85em; }
.container { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.skip-link { position: absolute; left: -9999px; top: 8px; background: var(--ink); color: #fff; padding: 8px 12px; z-index: 100; }
.skip-link:focus { left: 8px; }

/* ── ヘッダー ── */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--white); border-bottom: 1px solid var(--line); }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; position: relative; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); min-width: 0; }
.brand img { height: 30px; width: auto; }
.brand__name { font-size: 0.8rem; font-weight: 700; letter-spacing: 0.04em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
@media (max-width: 419px) { .brand__name { display: none; } }
.nav-toggle {
  display: inline-flex; flex-direction: column; justify-content: center; gap: 5px;
  width: 44px; height: 44px; padding: 0 10px; background: none; border: 1px solid var(--line); border-radius: 8px; cursor: pointer; flex-shrink: 0;
}
.nav-toggle span { display: block; height: 2px; width: 100%; background: var(--ink); border-radius: 2px; transition: transform .25s ease, opacity .2s ease; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.site-nav {
  display: none; position: absolute; top: 100%; left: -20px; right: -20px;
  flex-direction: column; background: var(--white); border-bottom: 1px solid var(--line);
  box-shadow: 0 12px 24px rgba(35,24,21,0.08); padding: 8px 20px 16px; max-height: calc(100vh - 64px); overflow-y: auto;
}
.site-nav.open { display: flex; }
.site-nav a { color: var(--ink); text-decoration: none; font-size: 0.95rem; font-weight: 500; padding: 12px 4px; border-bottom: 1px solid var(--cream); }
.site-nav a[aria-current="page"] { color: var(--orange-deep); font-weight: 700; }
.site-nav a.btn { margin-top: 12px; border-bottom: none; justify-content: center; }
@media (min-width: 900px) {
  .brand img { height: 36px; }
  .brand__name { font-size: 0.9rem; }
  .nav-toggle { display: none; }
  .site-nav { display: flex; position: static; flex-direction: row; align-items: center; gap: 4px 18px; background: none; border: none; box-shadow: none; padding: 0; max-height: none; overflow: visible; }
  .site-nav a { padding: 6px 0; border-bottom: 2px solid transparent; font-size: 0.9rem; }
  .site-nav a:hover { border-bottom-color: var(--orange); }
  .site-nav a[aria-current="page"] { border-bottom-color: var(--orange); }
  .site-nav a.btn { margin-top: 0; margin-left: 6px; }
}

/* ── ボタン ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 48px; padding: 0 24px; border-radius: 8px; border: 2px solid var(--ink);
  background: var(--ink); color: var(--white) !important; font-weight: 700; text-decoration: none !important; font-size: 0.95rem; cursor: pointer; font-family: inherit;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.btn:hover { background: var(--orange-deep); border-color: var(--orange-deep); }
.btn--accent { background: var(--orange); border-color: var(--orange); color: var(--ink) !important; }
.btn--accent:hover { background: var(--yellow); border-color: var(--yellow); }
.btn--ghost { background: transparent; color: var(--ink) !important; }
.btn--ghost:hover { background: var(--cream); color: var(--ink) !important; }
.btn--ghost.on-dark { color: var(--white) !important; border-color: rgba(255,255,255,0.75); }
.btn--ghost.on-dark:hover { background: rgba(255,255,255,0.15); }
.btn--small { min-height: 40px; padding: 0 16px; font-size: 0.85rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }
.btn[disabled] { opacity: .6; cursor: wait; }
@media (max-width: 599px) { .btn-row .btn { width: 100%; } }

/* ── ヒーロー ── */
.hero { position: relative; color: var(--white); background: var(--ink); overflow: hidden; }
.hero__bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.55; }
.hero__inner { position: relative; padding: 72px 20px 80px; max-width: var(--max); margin: 0 auto; }
.hero__bar { width: 48px; height: 4px; background: var(--orange); margin-bottom: 20px; }
.hero h1 { color: var(--white); font-size: clamp(1.6rem, 4.5vw, 2.5rem); margin-bottom: 16px; text-shadow: 0 2px 16px rgba(0,0,0,0.4); }
.hero p { font-size: 1.05rem; max-width: 640px; color: #f5efe6; text-shadow: 0 1px 10px rgba(0,0,0,0.5); }
.hero__badge { display: inline-block; background: var(--orange); color: var(--ink); font-weight: 700; font-size: 0.85rem; padding: 4px 12px; border-radius: 999px; margin-bottom: 16px; }
@media (min-width: 900px) { .hero__inner { padding: 120px 20px 128px; } }

/* ── ページ見出し（下層） ── */
.page-head { background: var(--cream); border-bottom: 1px solid var(--line); padding: 40px 0 32px; }
.page-head__label { display: block; color: var(--orange-deep); font-weight: 700; font-size: 0.8rem; letter-spacing: 0.1em; margin-bottom: 6px; }
.page-head h1 { margin-bottom: 8px; }
.page-head p { margin: 0; color: var(--ink-3); max-width: 720px; }
.breadcrumb { font-size: 0.8rem; color: var(--ink-3); margin: 0 0 12px; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 4px; }
.breadcrumb li + li::before { content: "›"; margin: 0 6px; color: var(--line); }
.breadcrumb a { color: var(--ink-3); }

/* ── セクション ── */
.section { padding: 56px 0; }
.section--alt { background: var(--cream); }
.section--ink { background: var(--ink); color: #f5efe6; }
.section--ink h2, .section--ink h3 { color: var(--white); }
.section--ink a:not(.btn) { color: var(--yellow); }
.section__head { margin-bottom: 28px; }
.section__head h2 { position: relative; padding-left: 16px; }
.section__head h2::before { content: ""; position: absolute; left: 0; top: 0.25em; bottom: 0.25em; width: 5px; background: var(--orange); border-radius: 3px; }
.section__head p { color: var(--ink-3); margin: 0; max-width: 720px; }
.section__foot { margin-top: 28px; }
.lead { font-size: 1.05rem; max-width: 760px; }
.note { font-size: 0.85rem; color: var(--ink-3); }
@media (min-width: 900px) { .section { padding: 80px 0; } }

/* ── カード ── */
.cards { display: grid; grid-template-columns: 1fr; gap: 18px; list-style: none; padding: 0; margin: 0; }
@media (min-width: 640px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .cards--4 { grid-template-columns: repeat(4, 1fr); } .cards--3 { grid-template-columns: repeat(3, 1fr); } }
.card {
  background: var(--white); border: 1px solid var(--line); border-top: 4px solid var(--orange); border-radius: var(--radius);
  padding: 24px 22px; display: flex; flex-direction: column; gap: 10px; margin: 0;
}
.card--plain { border-top-color: var(--line); }
.card__num { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; background: var(--yellow); color: var(--ink); font-weight: 700; font-size: 0.95rem; }
.card h3 { margin: 0; }
.card p { margin: 0; font-size: 0.95rem; flex: 1; }
.card a.more { font-weight: 700; font-size: 0.9rem; }
.card ul { margin: 0; font-size: 0.95rem; }

/* ── 表（団体概要） ── */
.dl { display: grid; grid-template-columns: 1fr; gap: 0; border-top: 1px solid var(--line); margin: 0 0 1em; }
.dl > div { display: grid; grid-template-columns: 1fr; border-bottom: 1px solid var(--line); }
.dl dt { background: var(--sand); padding: 10px 14px; font-weight: 700; color: var(--ink); margin: 0; }
.dl dd { padding: 10px 14px 14px; margin: 0; }
@media (min-width: 700px) {
  .dl > div { grid-template-columns: 200px 1fr; }
  .dl dt, .dl dd { padding: 14px 18px; }
}

/* ── 折りたたみ（details） ── */
.fold { border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); margin-bottom: 12px; }
.fold summary { cursor: pointer; padding: 14px 18px; font-weight: 700; color: var(--ink); list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.fold summary::-webkit-details-marker { display: none; }
.fold summary::after { content: "＋"; color: var(--orange-deep); flex-shrink: 0; }
.fold[open] summary::after { content: "－"; }
.fold summary:hover { background: var(--cream); border-radius: var(--radius); }
.fold__body { padding: 0 18px 18px; }
.fold__body ol { margin: 0; }

/* ── 年表 ── */
.timeline { list-style: none; padding: 0; margin: 0; border-left: 3px solid var(--yellow); }
.timeline li { position: relative; padding: 0 0 20px 24px; }
.timeline li::before { content: ""; position: absolute; left: -9px; top: 10px; width: 15px; height: 15px; border-radius: 50%; background: var(--orange); border: 3px solid var(--white); }
.timeline time { display: block; font-weight: 700; color: var(--ink); font-size: 0.95rem; }
.timeline p { margin: 0; }

/* ── 活動の柱（詳細） ── */
.pillar { padding: 48px 0; border-bottom: 1px solid var(--line); }
.pillar:last-of-type { border-bottom: none; }
.pillar__head { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.pillar__head h2 { margin: 0; }
.pillar__grid { display: grid; grid-template-columns: 1fr; gap: 14px; margin-top: 20px; }
@media (min-width: 760px) { .pillar__grid { grid-template-columns: repeat(2, 1fr); } }
.pillar__item { background: var(--cream); border-radius: var(--radius); padding: 18px 20px; }
.pillar__item h3 { font-size: 0.95rem; color: var(--orange-deep); margin-bottom: 6px; letter-spacing: 0.08em; }
.pillar__item p, .pillar__item ul { margin: 0; font-size: 0.95rem; }
.pillar__note { background: var(--white); border: 1px dashed var(--line); border-radius: var(--radius); padding: 14px 18px; font-size: 0.9rem; color: var(--ink-3); margin-top: 16px; }

/* ── 実績 ── */
.result { display: grid; grid-template-columns: 1fr; gap: 8px 20px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.result:last-child { border-bottom: none; }
.result__year { font-weight: 700; color: var(--orange-deep); font-size: 1.05rem; }
.result h2 { font-size: 1.15rem; margin-bottom: 6px; }
.result p { margin: 0 0 6px; }
.result dl { margin: 8px 0 0; font-size: 0.92rem; display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; }
.result dt { font-weight: 700; color: var(--ink); }
.result dd { margin: 0; }
@media (min-width: 700px) { .result { grid-template-columns: 110px 1fr; } }

/* ── お知らせ ── */
.news-list { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line); }
.news-list li { display: grid; grid-template-columns: 1fr; gap: 2px 20px; padding: 14px 4px; border-bottom: 1px solid var(--line); }
.news-list time { color: var(--ink-3); font-size: 0.9rem; }
.news-list .tag { display: inline-block; font-size: 0.75rem; background: var(--yellow); color: var(--ink); padding: 1px 8px; border-radius: 4px; margin-left: 8px; }
@media (min-width: 640px) { .news-list li { grid-template-columns: 170px 1fr; align-items: baseline; } }
.article { max-width: 760px; }
.article__meta { color: var(--ink-3); font-size: 0.9rem; margin-bottom: 20px; }
.article h2 { font-size: 1.2rem; margin-top: 1.8em; padding-bottom: 6px; border-bottom: 2px solid var(--yellow); }
.article img { border-radius: var(--radius); margin: 20px 0; }

/* ── 写真帯 ── */
.photo-band { display: grid; grid-template-columns: 1fr; gap: 20px; align-items: center; }
.photo-band img { border-radius: var(--radius); }
@media (min-width: 800px) { .photo-band { grid-template-columns: 1fr 1fr; gap: 40px; } }

/* ── 呼びかけ（CTA） ── */
.cta { background: var(--ink); color: #f5efe6; border-radius: 14px; padding: 32px 24px; text-align: center; }
.cta h2 { color: var(--white); }
.cta p { max-width: 640px; margin: 0 auto 20px; }
.cta .btn-row { justify-content: center; }

/* ── フォーム ── */
.form-layout { display: grid; grid-template-columns: 1fr; gap: 28px; align-items: start; }
@media (min-width: 900px) { .form-layout { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); } }
.form { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 20px; display: flex; flex-direction: column; gap: 20px; }
@media (min-width: 700px) { .form { padding: 36px; } }
.form label, .form .label { display: block; font-weight: 700; color: var(--ink); margin-bottom: 6px; font-size: 0.95rem; }
.req, .opt { display: inline-block; margin-left: 8px; padding: 0 8px; border-radius: 4px; font-size: 0.72rem; font-weight: 700; vertical-align: middle; }
.req { background: var(--orange); color: var(--ink); }
.opt { background: var(--sand); color: var(--ink-3); }
.form input[type="text"], .form input[type="email"], .form input[type="tel"], .form select, .form textarea {
  width: 100%; min-height: 48px; padding: 10px 14px; border: 1px solid #cfc5b5; border-radius: 8px; font-size: 16px; font-family: inherit; color: var(--ink); background: var(--white);
}
.form textarea { min-height: 180px; line-height: 1.7; resize: vertical; }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--orange); box-shadow: 0 0 0 3px rgba(243,152,0,0.25); }
.form .two { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 600px) { .form .two { grid-template-columns: 1fr 1fr; } }
.form .radio { display: inline-flex; align-items: center; gap: 6px; margin: 0 18px 4px 0; font-weight: 400; }
.form .check { display: flex; align-items: flex-start; gap: 10px; font-weight: 400; }
.form .check input { margin-top: 7px; }
.form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-error { margin: 0; padding: 12px 16px; border-radius: 8px; background: #fdecec; color: #8f2b1f; font-size: 0.95rem; }
.form-done { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 40px 24px; text-align: center; }
.aside-box { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; margin-bottom: 16px; }
.aside-box h2 { font-size: 1rem; margin-bottom: 8px; }
.aside-box ul { margin: 0; font-size: 0.92rem; }

/* ── プライバシー等の文書 ── */
.doc { max-width: 800px; }
.doc h2 { font-size: 1.15rem; margin-top: 1.8em; }
.doc ol, .doc ul { margin-bottom: 1em; }

/* ── フッター ── */
.site-footer { background: var(--sand); border-top: 4px solid var(--orange); margin-top: 40px; }
.site-footer__inner { display: grid; grid-template-columns: 1fr; gap: 28px; padding: 40px 20px 32px; }
@media (min-width: 800px) { .site-footer__inner { grid-template-columns: 1fr auto; gap: 48px; } }
.site-footer__logo { height: 72px; width: auto; margin-bottom: 12px; }
.site-footer__org p { margin: 0; font-size: 0.9rem; color: var(--ink-2); }
.site-footer__nav { display: grid; grid-template-columns: repeat(2, auto); gap: 8px 32px; }
.site-footer__nav a { color: var(--ink); text-decoration: none; font-size: 0.9rem; }
.site-footer__nav a:hover { color: var(--orange-deep); text-decoration: underline; }
.site-footer__bottom { border-top: 1px solid var(--line); text-align: center; padding: 16px 20px; font-size: 0.8rem; color: var(--ink-3); }

/* ── ユーティリティ ── */
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.center { text-align: center; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}