@charset "UTF-8";
/* =========================================================
   JTIC 一般社団法人日本免税インフラ協議会 公式サイト
   トーン: ネイビー×ゴールド（官公庁系フォーマル）
   規約: gonmura-design-rules base-rules 準拠
   - コンテンツ最大幅 1100px / SP 左右 20px
   - ヘッダー左右 60px / vw フォント不使用
   - 欧文・数字は .en / .num（欧文フォント）
   ========================================================= */

:root {
  --gold-700: #8a6a1f; /* 白背景上の小さめゴールド文字用（WCAG AA 4.5:1 対応） */
  --navy-900: #0a1633;
  --navy-800: #0f1f45;
  --navy-700: #16294f;
  --navy-600: #1e3560;
  --gold-600: #a37f2c;
  --gold-500: #b8923a;
  --gold-400: #c9a24b;
  --gold-300: #d9b45e;
  --gold-100: #f3e9d2;
  --red-600: #c0392b;
  --red-500: #c73e2e;
  --ink: #1a2333;
  --text: #333a45;
  --muted: #6b7280;
  --line: #e3e6ec;
  --bg-light: #f4f6f9;
  --white: #ffffff;
  --font-jp: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --font-jp-serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-en: "Marcellus", "Times New Roman", serif;
  --header-h: 88px;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-jp);
  font-size: 16px;
  line-height: 1.9;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { max-width: 100%; vertical-align: middle; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

.en, .num { font-family: var(--font-en); letter-spacing: 0.06em; }

/* スキップリンク（キーボード操作時のみ表示） */
.skip-link {
  position: absolute;
  top: -48px;
  left: 8px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--navy-900);
  color: var(--white);
  font-size: 13px;
  border-radius: 0 0 4px 4px;
  transition: top 0.2s;
}
.skip-link:focus { top: 0; }

/* コンテンツコンテナ（header / footer / KV は対象外） */
.container { max-width: 1100px; margin: 0 auto; padding: 0 40px; }

.section { padding: 88px 0; }
.section--light { background: var(--bg-light); }

.section-title { text-align: center; margin-bottom: 48px; }
.section-title .ja {
  display: block;
  font-family: var(--font-jp-serif);
  font-size: 30px;
  font-weight: 600;
  color: var(--navy-900);
  letter-spacing: 0.08em;
}
.section-title .en {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--gold-700);
  text-transform: uppercase;
  letter-spacing: 0.24em;
}
/* ネイビー背景上は明るいゴールドで十分なコントラストが出る */
.member-band .section-title .en { color: var(--gold-300); }
.section-title::after {
  content: "";
  display: block;
  width: 48px;
  height: 2px;
  margin: 18px auto 0;
  background: linear-gradient(90deg, var(--gold-600), var(--gold-300));
}

/* ---------- header（全幅・左右 60px） ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--header-h);
  padding: 0 60px;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}
.site-header.is-scrolled { box-shadow: 0 4px 18px rgba(10, 22, 51, 0.1); }

.brand { display: flex; align-items: center; gap: 14px; min-width: 0; }
.brand:hover { opacity: 0.75; }
.brand, .brand:hover { transition: opacity 0.25s; }
.brand-mark {
  font-family: var(--font-en);
  font-size: 34px;
  line-height: 1;
  color: var(--navy-900);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.brand-mark .dot { color: var(--red-600); }
.brand-text { line-height: 1.35; white-space: nowrap; }
.brand-text .org { display: block; font-size: 11px; color: var(--muted); }
.brand-text .name { display: block; font-size: 15px; font-weight: 700; color: var(--navy-900); }
.brand-text .en { display: block; font-size: 9px; color: var(--muted); letter-spacing: 0.1em; }

.global-nav ul { display: flex; align-items: center; gap: 28px; }
.global-nav a {
  position: relative;
  display: inline-block;
  padding: 8px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--navy-900);
  transition: color 0.25s;
}
.global-nav a:hover { color: var(--gold-600); }
.global-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--gold-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s;
}
.global-nav a:hover::after, .global-nav a.is-current::after { transform: scaleX(1); }

/* .global-nav a より詳細度を上げないと color/padding が上書きされる（レビュー指摘対応） */
.global-nav a.nav-cta {
  display: inline-block;
  padding: 12px 22px;
  background: var(--navy-900);
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  border-radius: 3px;
  transition: background-color 0.25s, transform 0.25s, color 0.25s;
}
.global-nav a.nav-cta::after { content: none; }
.global-nav a.nav-cta:hover { background: var(--navy-600); color: var(--white); transform: translateY(-2px); }

.nav-toggle {
  display: none;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  transition: opacity 0.25s;
}
.nav-toggle:hover { opacity: 0.7; }
.nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  margin: 6px auto;
  background: var(--navy-900);
  transition: transform 0.3s, opacity 0.3s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---------- hero（KV・全幅） ---------- */
.hero {
  position: relative;
  overflow: hidden;
  color: var(--white);
  background:
    radial-gradient(1200px 600px at 85% 20%, rgba(201, 162, 75, 0.18), transparent 60%),
    linear-gradient(110deg, var(--navy-900) 0%, var(--navy-800) 55%, var(--navy-700) 100%);
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1100px;
  margin: 0 auto;
  padding: 120px 40px 128px;
}
.hero-catch {
  font-family: var(--font-jp-serif);
  font-size: 48px;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.06em;
}
.hero-sub {
  margin-top: 18px;
  font-family: var(--font-jp-serif);
  font-size: 22px;
  color: var(--gold-300);
  letter-spacing: 0.08em;
}
.hero-lead { margin-top: 28px; max-width: 560px; font-size: 15.5px; line-height: 2.1; color: #dce1ec; }
.hero-art {
  position: absolute;
  right: -40px;
  bottom: 0;
  z-index: 1;
  width: 620px;
  opacity: 0.5;
  pointer-events: none;
}

/* ---------- 入会 CTA バナー（ゴールド） ---------- */
.join-banner { background: linear-gradient(120deg, var(--gold-600) 0%, var(--gold-300) 48%, var(--gold-500) 100%); }
.join-banner-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  color: var(--navy-900);
}
.join-banner-copy .small { display: block; font-size: 14px; font-weight: 700; letter-spacing: 0.06em; }
.join-banner-copy .big {
  display: block;
  margin-top: 6px;
  font-family: var(--font-jp-serif);
  font-size: 40px;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.3;
}
.join-banner-btn {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 20px 36px;
  background: var(--navy-900);
  color: var(--white);
  font-size: 16px;
  font-weight: 700;
  border-radius: 999px;
  transition: background-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.join-banner-btn:hover {
  background: var(--navy-600);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(10, 22, 51, 0.35);
}
.join-banner-btn .arrow { font-family: var(--font-en); }

/* ---------- 発起人・参画省庁・後援（ネイビー3カラム帯・全幅） ---------- */
.founders-band { background: var(--navy-900); color: var(--white); }
.founders-band-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 40px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.founder-item { display: flex; gap: 18px; align-items: flex-start; }
.founder-item .icon { flex-shrink: 0; width: 44px; height: 44px; color: var(--gold-400); }
.founder-item h3 {
  font-family: var(--font-jp-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--gold-300);
  letter-spacing: 0.08em;
}
.founder-item p { margin-top: 8px; font-size: 14px; line-height: 1.8; color: #d4d9e6; }

/* ---------- 設立趣意・想定される課題 ---------- */
.purpose-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: stretch; }
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 3px solid var(--gold-500);
  padding: 40px;
  box-shadow: 0 6px 24px rgba(10, 22, 51, 0.05);
}
.card h3 {
  font-family: var(--font-jp-serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--navy-900);
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}
.card p { font-size: 15px; }
.card .more { margin-top: 24px; }

.issue-list { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 24px; }
.issue-list li { display: flex; align-items: center; gap: 12px; font-size: 14.5px; font-weight: 500; color: var(--ink); }
.issue-list .icon { flex-shrink: 0; width: 34px; height: 34px; color: var(--navy-700); }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1px solid var(--gold-500);
  color: var(--gold-700);
  font-size: 14px;
  font-weight: 700;
  border-radius: 3px;
  transition: background-color 0.25s, color 0.25s, border-color 0.25s;
}
.text-link:hover { background: var(--gold-700); border-color: var(--gold-700); color: var(--white); }

/* ---------- 協議会の目的（9カード） ---------- */
.objective-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.objective-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  padding: 56px 16px 24px;
  text-align: center;
  font-size: 13.5px;
  font-weight: 500;
  line-height: 1.7;
  color: var(--ink);
}
.objective-card .no {
  position: absolute;
  top: 12px;
  left: 14px;
  font-family: var(--font-en);
  font-size: 22px;
  color: var(--gold-500);
  line-height: 1;
}
.objective-card .icon { display: block; width: 40px; height: 40px; margin: 0 auto 14px; color: var(--navy-700); }

/* ---------- 活動内容・政策提言 ---------- */
.activity-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 32px; align-items: stretch; }
.activity-list li { display: flex; gap: 14px; padding: 13px 0; border-bottom: 1px dashed var(--line); font-size: 14.5px; }
.activity-list li:last-child { border-bottom: 0; }
.activity-list .icon { flex-shrink: 0; width: 26px; height: 26px; margin-top: 3px; color: var(--gold-600); }
.activity-list b { color: var(--navy-900); }
.activity-list .desc { display: block; font-size: 13px; color: var(--muted); line-height: 1.7; }

.policy-card { display: flex; flex-direction: column; }
.policy-visual {
  margin: 24px 0;
  padding: 44px 20px;
  text-align: center;
  background: linear-gradient(120deg, var(--navy-900), var(--navy-700));
  color: var(--white);
}
.policy-visual .mark { font-family: var(--font-en); font-size: 40px; letter-spacing: 0.05em; }
.policy-visual .mark .dot { color: var(--red-500); }
.policy-visual .sub { display: block; margin-top: 4px; font-size: 10px; letter-spacing: 0.2em; color: #aeb6c9; }
.policy-vision {
  margin-top: auto;
  padding: 20px 24px;
  background: var(--navy-900);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: background-color 0.25s;
}
.policy-vision:hover { background: var(--navy-600); }
.policy-vision h4 { font-family: var(--font-jp-serif); font-size: 16px; color: var(--gold-300); }
.policy-vision p { font-size: 13px; color: #d4d9e6; }
.policy-vision .arrow { flex-shrink: 0; color: var(--gold-300); font-family: var(--font-en); font-size: 20px; }

/* ---------- 会員区分帯（ネイビー・全幅） ---------- */
.member-band { background: var(--navy-900); color: var(--white); }
.member-band-inner { max-width: 1100px; margin: 0 auto; padding: 64px 40px; }
.member-band .section-title .ja { color: var(--white); }
.member-grid { display: grid; grid-template-columns: repeat(4, 1fr) auto; gap: 28px; align-items: start; }
.member-item .icon { width: 40px; height: 40px; color: var(--gold-400); }
.member-item h3 {
  margin-top: 12px;
  font-family: var(--font-jp-serif);
  font-size: 18px;
  color: var(--gold-300);
  letter-spacing: 0.08em;
}
.member-item p { margin-top: 8px; font-size: 12.5px; line-height: 1.8; color: #ccd2e0; }
.member-join-btn {
  align-self: center;
  display: inline-block;
  padding: 26px 30px;
  text-align: center;
  background: linear-gradient(135deg, #d0542f, var(--red-600));
  color: var(--white);
  border-radius: 4px;
  transition: transform 0.25s, box-shadow 0.25s, filter 0.25s;
}
.member-join-btn:hover { transform: translateY(-3px); box-shadow: 0 12px 26px rgba(192, 57, 43, 0.4); filter: brightness(1.06); }
.member-join-btn .big { display: block; font-size: 20px; font-weight: 700; letter-spacing: 0.1em; }
.member-join-btn .small { display: block; margin-top: 6px; font-size: 11px; }

/* ---------- footer（全幅） ---------- */
.site-footer { background: #071026; color: #c7cddc; }
.footer-inner { max-width: 1100px; margin: 0 auto; padding: 56px 40px 32px; }
.footer-statement { text-align: center; font-size: 14px; line-height: 2.1; }
.footer-nav { margin-top: 32px; display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 28px; }
.footer-nav a { font-size: 13px; transition: color 0.25s; }
.footer-nav a:hover { color: var(--gold-300); }
.footer-brand { margin-top: 36px; text-align: center; }
.footer-brand .mark { font-family: var(--font-en); font-size: 28px; color: var(--white); }
.footer-brand .mark .dot { color: var(--red-500); }
.footer-brand .org { display: block; margin-top: 4px; font-size: 12px; }
.copyright { margin-top: 28px; text-align: center; font-size: 11px; color: #7d8598; letter-spacing: 0.08em; }

/* ---------- 下層ページ共通 ---------- */
.page-hero {
  background:
    radial-gradient(900px 400px at 90% 0%, rgba(201, 162, 75, 0.16), transparent 60%),
    linear-gradient(110deg, var(--navy-900), var(--navy-700));
  color: var(--white);
}
.page-hero-inner { max-width: 1100px; margin: 0 auto; padding: 72px 40px; }
.page-hero .en { display: block; font-size: 13px; color: var(--gold-300); text-transform: uppercase; letter-spacing: 0.24em; }
.page-hero h1 {
  margin-top: 10px;
  font-family: var(--font-jp-serif);
  font-size: 36px;
  font-weight: 600;
  letter-spacing: 0.1em;
}
.breadcrumb { background: var(--bg-light); border-bottom: 1px solid var(--line); }
.breadcrumb ol { max-width: 1100px; margin: 0 auto; padding: 12px 40px; display: flex; gap: 8px; font-size: 12px; color: #5b6472; }
.breadcrumb a { color: var(--navy-700); transition: color 0.25s; }
.breadcrumb a:hover { color: var(--gold-600); }
.breadcrumb li + li::before { content: "/"; margin-right: 8px; color: var(--line); }

.prose { max-width: 820px; margin: 0 auto; }
.prose p + p { margin-top: 1.4em; }
.prose .lead { font-size: 17px; font-family: var(--font-jp-serif); color: var(--navy-900); }

.subsection-title {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 56px 0 24px;
  font-family: var(--font-jp-serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--navy-900);
  letter-spacing: 0.08em;
}
.subsection-title::before { content: ""; width: 6px; height: 26px; background: linear-gradient(180deg, var(--gold-300), var(--gold-600)); }

.info-table th, .info-table td { padding: 14px 18px; border: 1px solid var(--line); font-size: 14.5px; text-align: left; vertical-align: top; }
.info-table th { width: 220px; background: var(--bg-light); color: var(--navy-900); font-weight: 700; white-space: nowrap; }

.note { font-size: 12.5px; color: var(--muted); }

/* 活動内容ページ */
.activity-detail { border: 1px solid var(--line); background: var(--white); padding: 28px 32px; }
.activity-detail + .activity-detail { margin-top: 20px; }
.activity-detail h3 { display: flex; align-items: center; gap: 12px; font-size: 18px; color: var(--navy-900); font-family: var(--font-jp-serif); }
.activity-detail h3 .no { font-family: var(--font-en); font-size: 20px; color: var(--gold-500); }
.activity-detail ul { margin-top: 14px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 24px; }
.activity-detail ul li { position: relative; padding-left: 18px; font-size: 14px; }
.activity-detail ul li::before { content: ""; position: absolute; left: 0; top: 0.75em; width: 8px; height: 2px; background: var(--gold-500); }
.activity-detail .tag { display: inline-block; margin-left: 8px; padding: 2px 10px; background: var(--gold-100); color: var(--gold-700); font-size: 11px; font-weight: 700; border-radius: 999px; }

/* 組織・体制ページ */
.org-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.org-list li { background: var(--white); border: 1px solid var(--line); padding: 18px 22px; font-size: 14.5px; }
.org-list b { display: block; color: var(--navy-900); }
.org-list span { font-size: 13px; color: var(--muted); }
.division-list { display: flex; flex-wrap: wrap; gap: 10px; }
.division-list li { padding: 8px 18px; background: var(--white); border: 1px solid var(--gold-400); color: var(--navy-900); font-size: 13.5px; border-radius: 999px; }

/* 会員についてページ */
.member-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.member-detail {
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 3px solid var(--gold-500);
  padding: 30px 32px;
}
.member-detail .icon { width: 38px; height: 38px; color: var(--navy-700); }
.member-detail h3 { margin-top: 10px; font-family: var(--font-jp-serif); font-size: 20px; color: var(--navy-900); }
.member-detail p { margin-top: 10px; font-size: 14px; }

/* ---------- フォーム ---------- */
.form-notice {
  max-width: 820px;
  margin: 0 auto 40px;
  padding: 16px 22px;
  background: var(--gold-100);
  border-left: 4px solid var(--gold-500);
  font-size: 13.5px;
  color: var(--ink);
}
.form { max-width: 820px; margin: 0 auto; }
.form-row { margin-bottom: 26px; }
.form-fieldset { border: 0; padding: 0; margin: 0 0 26px; min-width: 0; }
.form-fieldset legend { padding: 0; }
.form-row > label, .form-row > .form-label { display: block; font-weight: 700; font-size: 14.5px; color: var(--navy-900); margin-bottom: 8px; }
.required, .optional {
  display: inline-block;
  margin-left: 10px;
  padding: 1px 10px;
  font-size: 11px;
  font-weight: 700;
  border-radius: 2px;
  vertical-align: 2px;
}
.required { background: var(--red-600); color: var(--white); }
.optional { background: var(--muted); color: var(--white); }
input[type="text"], input[type="email"], input[type="tel"], select, textarea {
  width: 100%;
  padding: 13px 16px;
  font-family: inherit;
  font-size: 15px;
  color: var(--ink);
  background: var(--white);
  border: 1px solid #c9cfda;
  border-radius: 3px;
  transition: border-color 0.25s, box-shadow 0.25s;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--gold-500);
  box-shadow: 0 0 0 3px rgba(184, 146, 58, 0.18);
}
textarea { min-height: 160px; resize: vertical; }
.radio-group { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.radio-card {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 16px;
  border: 1px solid #c9cfda;
  border-radius: 3px;
  cursor: pointer;
  transition: border-color 0.25s, background-color 0.25s;
}
.radio-card:hover { border-color: var(--gold-500); background: #fdfaf3; }
.radio-card input { margin-top: 6px; accent-color: var(--gold-600); }
.radio-card b { display: block; font-size: 14.5px; color: var(--navy-900); }
.radio-card span { font-size: 12px; color: var(--muted); line-height: 1.6; }
.form-submit { text-align: center; margin-top: 40px; }
.submit-btn {
  display: inline-block;
  min-width: 280px;
  padding: 18px 40px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  background: var(--navy-900);
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  transition: background-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.submit-btn:not(:disabled):hover { background: var(--navy-600); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(10, 22, 51, 0.3); }
.submit-btn:disabled { opacity: 0.55; cursor: not-allowed; }
.form-result { margin-top: 20px; text-align: center; font-size: 14px; font-weight: 700; color: var(--red-600); }

/* ---------- スクロールフェードイン ---------- */
.fade-in { opacity: 0; transform: translateY(16px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-in.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fade-in { opacity: 1; transform: none; transition: none; }
}

/* =========================================================
   レスポンシブ
   - 1100px 以下: ナビ→ハンバーガー（項目が重なる前に切替）
   - 767px 以下: SP（左右 20px）
   ========================================================= */
@media (max-width: 1100px) {
  .site-header { padding: 0 24px; height: 72px; }
  :root { --header-h: 72px; }
  .nav-toggle { display: block; }
  .global-nav {
    position: fixed;
    top: 72px;
    right: 0;
    left: 0;
    bottom: 0;
    z-index: 99;
    background: rgba(10, 22, 51, 0.98);
    padding: 40px 24px;
    transform: translateX(100%);
    /* 閉時は visibility も隠す（閉じたメニューへキーボードフォーカスが入るのを防ぐ） */
    visibility: hidden;
    transition: transform 0.35s ease, visibility 0s linear 0.35s;
    overflow-y: auto;
  }
  .global-nav.is-open { transform: translateX(0); visibility: visible; transition: transform 0.35s ease; }
  .global-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .global-nav a { display: block; padding: 16px 8px; color: var(--white); font-size: 16px; border-bottom: 1px solid rgba(255, 255, 255, 0.12); }
  .global-nav a::after { content: none; }
  .global-nav a:hover { color: var(--gold-300); }
  .global-nav a.nav-cta { display: block; margin-top: 24px; padding: 16px 8px; text-align: center; font-size: 16px; background: var(--gold-600); border-bottom: 0; }
  .global-nav a.nav-cta:hover { background: var(--gold-500); color: var(--white); transform: none; }
  .objective-grid { grid-template-columns: repeat(3, 1fr); }
  .member-grid { grid-template-columns: repeat(2, 1fr); }
  .member-join-btn { grid-column: 1 / -1; justify-self: center; }
}

@media (max-width: 900px) {
  .purpose-grid, .activity-grid { grid-template-columns: 1fr; }
  .founders-band-inner { grid-template-columns: 1fr; gap: 24px; }
  .hero-catch { font-size: 38px; }
  .join-banner-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 767px) {
  body { font-size: 15px; }
  .container { padding: 0 20px; }
  /* ブランド表記が 375px 幅で溢れないよう縮小（英文行は非表示） */
  .brand { gap: 10px; }
  .brand-mark { font-size: 26px; }
  .brand-text .org { font-size: 10px; }
  .brand-text .name { font-size: 13px; }
  .brand-text .en { display: none; }
  .hero-inner { padding: 72px 20px 88px; }
  .hero-catch { font-size: 30px; }
  .hero-sub { font-size: 17px; }
  .hero-art { width: 420px; right: -80px; opacity: 0.3; }
  .join-banner-inner { padding: 36px 20px; }
  .join-banner-copy .big { font-size: 30px; }
  .founders-band-inner { padding: 36px 20px; }
  .member-band-inner { padding: 48px 20px; }
  .footer-inner { padding: 48px 20px 28px; }
  .page-hero-inner { padding: 48px 20px; }
  .page-hero h1 { font-size: 26px; }
  .breadcrumb ol { padding: 10px 20px; }
  .section { padding: 56px 0; }
  .section-title .ja { font-size: 24px; }
  .card { padding: 28px 22px; }
  .issue-list { grid-template-columns: 1fr; }
  .objective-grid { grid-template-columns: repeat(2, 1fr); }
  .member-grid { grid-template-columns: 1fr; }
  .activity-detail ul { grid-template-columns: 1fr; }
  .org-list { grid-template-columns: 1fr; }
  .member-detail-grid { grid-template-columns: 1fr; }
  .radio-group { grid-template-columns: 1fr; }
  .info-table th { width: auto; display: block; border-bottom: 0; }
  .info-table td { display: block; }
  .info-table tr { display: block; }
  .info-table tr + tr { margin-top: -1px; }
}