@charset "utf-8";

/* =========================================================
   一般社団法人 不燃性潜熱蓄熱材普及協会（IPMA）
   style.css
   ========================================================= */

/* ---------- 1. デザイントークン ---------- */
:root {
  /* color */
  --c-navy:        #0f2f52;
  --c-navy-deep:   #0a2038;
  --c-navy-soft:   #3c5f8a;
  --c-accent:      #c0562f;
  --c-accent-soft: #e6d3c9;

  --c-text:        #1f262d;
  --c-text-muted:  #5d6a76;
  --c-line:        #dfe4ea;
  --c-line-strong: #c3cbd4;

  --c-bg:          #ffffff;
  --c-bg-soft:     #f5f7f9;
  --c-bg-tint:     #eef2f6;

  /* type */
  --f-sans:  "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  --f-serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", serif;
  --f-latin: "Cormorant Garamond", "Noto Serif JP", serif;

  /* layout */
  --w-container: 1120px;
  --h-header: 84px;
  --pad-x: 24px;

  /* motion */
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 2. リセット / ベース ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--h-header) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--f-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.95;
  letter-spacing: .04em;
  color: var(--c-text);
  background: var(--c-bg);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, p, ul, ol, dl, dd, figure, table { margin: 0; padding: 0; }
ul, ol { list-style: none; }

a {
  color: var(--c-navy);
  text-decoration: none;
  transition: color .25s var(--ease), opacity .25s var(--ease);
}
a:hover { color: var(--c-accent); }

img, svg { max-width: 100%; height: auto; vertical-align: middle; }

:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
}

.container {
  width: 100%;
  max-width: var(--w-container);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: fixed;
  top: -100px; left: 16px;
  z-index: 999;
  padding: 10px 20px;
  background: var(--c-navy);
  color: #fff;
  font-size: .85rem;
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 12px; color: #fff; }

.pc-only { display: inline; }
.sp-only { display: none; }

/* ---------- 3. ヘッダー ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: saturate(150%) blur(8px);
  border-bottom: 1px solid var(--c-line);
  transition: box-shadow .3s var(--ease);
}
.site-header.is-scrolled { box-shadow: 0 1px 18px rgba(15, 47, 82, .09); }

.utility-bar {
  background: var(--c-navy-deep);
  color: rgba(255, 255, 255, .78);
  font-size: .72rem;
  letter-spacing: .1em;
}
.utility-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 32px;
  gap: 16px;
}
.utility-bar__tag {
  font-family: var(--f-latin);
  font-size: .8rem;
  letter-spacing: .14em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.utility-bar__links { display: flex; gap: 20px; }
.utility-bar__links a { color: rgba(255, 255, 255, .8); }
.utility-bar__links a:hover { color: #fff; }

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--h-header);
}

.brand { display: flex; align-items: center; gap: 14px; color: var(--c-navy); }
.brand:hover { color: var(--c-navy); opacity: .82; }
.brand__mark { width: 42px; flex: none; color: var(--c-navy); }
.brand__mark svg { display: block; width: 100%; }
.brand__text { display: flex; flex-direction: column; line-height: 1.35; }
.brand__ja {
  font-family: var(--f-serif);
  font-weight: 600;
  font-size: 1.06rem;
  letter-spacing: .02em;
}
.brand__en {
  font-family: var(--f-latin);
  font-size: .78rem;
  letter-spacing: .42em;
  color: var(--c-text-muted);
}

.gnav__list { display: flex; align-items: center; gap: 26px; }
.gnav__list > li > a {
  position: relative;
  display: block;
  padding: 6px 0;
  font-size: .86rem;
  font-weight: 500;
  letter-spacing: .06em;
  white-space: nowrap;
}
.gnav__list > li > a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--c-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .35s var(--ease);
}
.gnav__list > li > a:hover::after,
.gnav__list > li > a.is-current::after { transform: scaleX(1); transform-origin: left; }
.gnav__list > li > a.is-current { color: var(--c-accent); }

.gnav__cta {
  padding: 9px 22px !important;
  background: var(--c-navy);
  color: #fff !important;
  letter-spacing: .1em;
}
.gnav__cta::after { display: none; }
.gnav__cta:hover { background: var(--c-accent); }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--c-line-strong);
  background: transparent;
  color: var(--c-navy);
  font-family: var(--f-latin);
  font-size: .8rem;
  letter-spacing: .16em;
  cursor: pointer;
}
.nav-toggle__bars { display: block; width: 20px; }
.nav-toggle__bars i {
  display: block;
  height: 1.5px;
  background: currentColor;
  transition: transform .3s var(--ease), opacity .2s var(--ease);
}
.nav-toggle__bars i + i { margin-top: 5px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- 4. ヒーロー ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #fbfcfd 0%, var(--c-bg-tint) 100%);
  border-bottom: 1px solid var(--c-line);
}
.hero__bands {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      180deg,
      rgba(15, 47, 82, .05) 0px,
      rgba(15, 47, 82, .05) 1px,
      transparent 1px,
      transparent 13px
    ),
    radial-gradient(120% 90% at 85% 10%, rgba(192, 86, 47, .13) 0%, transparent 58%),
    radial-gradient(90% 70% at 8% 95%, rgba(15, 47, 82, .12) 0%, transparent 60%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 22%, #000 100%);
  pointer-events: none;
}
.hero__inner {
  position: relative;
  padding-block: clamp(72px, 11vw, 132px);
}
.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 26px;
  font-family: var(--f-latin);
  font-size: .95rem;
  letter-spacing: .3em;
  color: var(--c-accent);
  text-transform: uppercase;
}
.hero__eyebrow::after {
  content: "";
  flex: 1;
  max-width: 180px;
  height: 1px;
  background: linear-gradient(90deg, var(--c-accent-soft), transparent);
}
.hero__title {
  font-family: var(--f-serif);
  font-weight: 600;
  font-size: clamp(1.5rem, 2.2vw, 1.9rem);
  line-height: 1.5;
  letter-spacing: .04em;
  color: var(--c-navy-deep);
}
.hero__title-main {
  display: block;
  margin-top: 6px;
  font-size: clamp(2.1rem, 5.2vw, 3.5rem);
  line-height: 1.32;
  letter-spacing: .02em;
}
.hero__title-abbr {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--f-latin);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: .5em;
  color: var(--c-navy-soft);
}
.hero__lead {
  margin-top: 30px;
  padding-left: 20px;
  border-left: 2px solid var(--c-accent);
  font-size: 1rem;
  line-height: 2.1;
  color: var(--c-text-muted);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 42px; }

/* ---------- 5. ボタン ---------- */
.btn {
  --btn-bg: var(--c-navy);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 15px 34px;
  font-size: .92rem;
  font-weight: 500;
  letter-spacing: .1em;
  border: 1px solid var(--btn-bg);
  transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease);
}
.btn::after {
  content: "";
  width: 18px; height: 1px;
  background: currentColor;
  transition: width .3s var(--ease);
}
.btn:hover::after { width: 26px; }
.btn--primary { background: var(--btn-bg); color: #fff; }
.btn--primary:hover { --btn-bg: var(--c-accent); color: #fff; }
.btn--ghost { background: transparent; color: var(--c-navy); border-color: var(--c-line-strong); }
.btn--ghost:hover { border-color: var(--c-accent); color: var(--c-accent); }
.btn--wide { width: 100%; justify-content: center; padding-block: 18px; }

/* ---------- 6. セクション共通 ---------- */
.section { padding-block: clamp(64px, 8vw, 104px); }
.section--soft { background: var(--c-bg-soft); border-block: 1px solid var(--c-line); }
.section--contact { background: var(--c-bg); }

.section__head {
  position: relative;
  margin-bottom: 48px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--c-line-strong);
}
.section__num {
  font-family: var(--f-latin);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: .22em;
  color: var(--c-accent);
}
.section__title {
  margin-top: 4px;
  font-family: var(--f-serif);
  font-weight: 600;
  font-size: clamp(1.5rem, 3vw, 2.05rem);
  line-height: 1.5;
  letter-spacing: .06em;
  color: var(--c-navy-deep);
}
.section__title-en {
  position: absolute;
  right: 0; bottom: 20px;
  font-family: var(--f-latin);
  font-size: 1.05rem;
  letter-spacing: .24em;
  color: var(--c-text-muted);
  text-transform: uppercase;
}

.lead-text {
  max-width: 62em;
  margin-bottom: 34px;
  font-size: 1.02rem;
  line-height: 2.15;
}

/* ---------- 7. 法人の目的 ---------- */
.purpose-list {
  border-top: 1px solid var(--c-line);
  max-width: 900px;
}
.purpose-list__item {
  display: flex;
  gap: 14px;
  padding: 18px 6px;
  border-bottom: 1px solid var(--c-line);
  transition: background .3s var(--ease), padding-left .3s var(--ease);
}
.purpose-list__item:hover { background: var(--c-bg-soft); padding-left: 14px; }
.purpose-list__num {
  flex: none;
  font-family: var(--f-serif);
  font-weight: 600;
  color: var(--c-navy-soft);
  letter-spacing: 0;
}
.purpose-list__text { line-height: 1.85; }

/* ---------- 8. 潜熱蓄熱材とは ---------- */
.pcm__grid {
  display: grid;
  grid-template-columns: 1fr minmax(320px, .82fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}
.pcm__text p + p { margin-top: 1.5em; }
.pcm__text strong {
  font-weight: 700;
  background: linear-gradient(transparent 66%, rgba(192, 86, 47, .2) 66%);
}

.feature-badges { margin-top: 34px; display: grid; gap: 10px; }
.feature-badges li {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 18px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-accent);
  font-size: .92rem;
  color: var(--c-text-muted);
}
.feature-badges li span {
  flex: none;
  min-width: 6.5em;
  font-family: var(--f-serif);
  font-weight: 600;
  font-size: 1rem;
  color: var(--c-navy-deep);
  letter-spacing: .06em;
}

.pcm__figure {
  padding: 26px 22px 20px;
  background: #fff;
  border: 1px solid var(--c-line);
}
.pcm__chart { display: block; width: 100%; }
.pcm__chart-latent {
  stroke-dasharray: 130;
  stroke-dashoffset: 130;
  transition: stroke-dashoffset 1.1s .35s var(--ease);
}
.reveal.is-visible .pcm__chart-latent,
.pcm__figure.is-visible .pcm__chart-latent { stroke-dashoffset: 0; }
.pcm__axis {
  font-family: var(--f-sans);
  font-size: 12px;
  fill: var(--c-text-muted);
}
.pcm__label {
  font-family: var(--f-sans);
  font-size: 12.5px;
  font-weight: 500;
  fill: var(--c-navy-deep);
}
.pcm__label--accent { fill: var(--c-accent); font-weight: 700; }
.pcm__figure figcaption {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--c-line);
  font-size: .82rem;
  line-height: 1.85;
  color: var(--c-text-muted);
}

/* ---------- 9. 活動予定 ---------- */
.activity-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}
.activity-card {
  position: relative;
  padding: 34px 26px 38px;
  background: #fff;
  transition: background .35s var(--ease), transform .35s var(--ease);
}
.activity-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 100%; height: 2px;
  background: var(--c-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.activity-card:hover::before { transform: scaleX(1); }
.activity-card:hover { background: #fdfdfe; }
.activity-card__num {
  font-family: var(--f-serif);
  font-size: 1.6rem;
  line-height: 1;
  color: var(--c-accent);
  opacity: .85;
}
.activity-card__title {
  margin-top: 16px;
  font-family: var(--f-serif);
  font-weight: 600;
  font-size: 1.08rem;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--c-navy-deep);
}
.activity-card__note {
  margin-top: 8px;
  font-size: .82rem;
  color: var(--c-text-muted);
}

/* ---------- 10. 会員募集 ---------- */
.member-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}
.member-card {
  display: flex;
  flex-direction: column;
  padding: 34px 32px 30px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-top: 3px solid var(--c-navy-soft);
}
.member-card--regular { border-top-color: var(--c-accent); }
.member-card__head { padding-bottom: 20px; border-bottom: 1px dashed var(--c-line-strong); }
.member-card__title {
  font-family: var(--f-serif);
  font-weight: 600;
  font-size: 1.4rem;
  letter-spacing: .12em;
  color: var(--c-navy-deep);
}
.member-card__fee {
  margin-top: 10px;
  font-size: .95rem;
  color: var(--c-text-muted);
  letter-spacing: .06em;
}
.member-card__fee strong {
  font-family: var(--f-latin);
  font-size: 2.3rem;
  font-weight: 600;
  line-height: 1;
  margin-inline: 6px;
  color: var(--c-accent);
}
.member-card__tentative { font-size: .8rem; margin-left: 4px; }
.member-card__list { margin-top: 22px; flex: 1; }
.member-card__list li {
  position: relative;
  padding-left: 22px;
  line-height: 1.9;
  font-size: .96rem;
}
.member-card__list li + li { margin-top: 8px; }
.member-card__list li::before {
  content: "";
  position: absolute;
  left: 2px; top: .82em;
  width: 8px; height: 8px;
  border: 1px solid var(--c-navy-soft);
  transform: rotate(45deg);
}
.member-card__note {
  margin-top: 22px;
  padding-top: 14px;
  border-top: 1px solid var(--c-line);
  font-size: .8rem;
  color: var(--c-text-muted);
}
.member-cta {
  margin-top: 32px;
  padding: 20px 24px;
  background: #fff;
  border: 1px solid var(--c-line);
  text-align: center;
  font-size: .95rem;
}
.member-cta a {
  font-weight: 500;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

/* ---------- 11. 法人概要テーブル ---------- */
.info-table {
  width: 100%;
  border-collapse: collapse;
  border-top: 1px solid var(--c-line-strong);
}
.info-table th,
.info-table td {
  padding: 20px 8px;
  border-bottom: 1px solid var(--c-line);
  text-align: left;
  vertical-align: top;
  font-size: .98rem;
  line-height: 1.9;
}
.info-table th {
  width: 220px;
  font-family: var(--f-serif);
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--c-navy-deep);
  white-space: nowrap;
}

.officer-list li { display: flex; gap: 18px; }
.officer-list li + li { margin-top: 6px; }
.officer-list__role {
  flex: none;
  min-width: 6em;
  font-size: .8rem;
  letter-spacing: .1em;
  color: var(--c-text-muted);
  border: 1px solid var(--c-line-strong);
  text-align: center;
  line-height: 1.9;
  height: 1.9em;
  margin-top: .3em;
}
.officer-list__name { letter-spacing: .12em; }

/* ---------- 12. 公告テーブル ---------- */
.notice-table-wrap { overflow-x: auto; }
.notice-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--c-line);
}
.notice-table th,
.notice-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--c-line);
  font-size: .94rem;
  vertical-align: middle;
}
.notice-table thead th {
  background: var(--c-navy-deep);
  color: rgba(255, 255, 255, .92);
  font-weight: 500;
  font-size: .82rem;
  letter-spacing: .12em;
  border-bottom: none;
}
.notice-table__date { width: 150px; }
.notice-table__file { width: 190px; }
.notice-table tbody tr:last-child td { border-bottom: none; }
.notice-table tbody tr { transition: background .25s var(--ease); }
.notice-table tbody tr:hover { background: var(--c-bg-soft); }
.notice-table time {
  font-family: var(--f-latin);
  font-size: 1.02rem;
  letter-spacing: .06em;
  color: var(--c-text-muted);
}
.notice-title { font-weight: 500; }
.notice-pdf {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--c-line-strong);
  font-size: .82rem;
  letter-spacing: .06em;
  white-space: nowrap;
}
.notice-pdf:hover { border-color: var(--c-accent); background: #fff; }
.notice-pdf::before {
  content: "PDF";
  font-family: var(--f-latin);
  font-weight: 600;
  color: var(--c-accent);
  letter-spacing: .08em;
}
.notice-empty {
  padding: 46px 20px !important;
  text-align: center !important;
  color: var(--c-text-muted);
  font-size: .92rem;
}

/* ---------- 13. お問合せ ---------- */
.contact__grid {
  display: grid;
  grid-template-columns: minmax(280px, .8fr) 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}
.contact__info {
  padding: 34px 32px;
  background: var(--c-bg-soft);
  border-top: 3px solid var(--c-navy);
}
.contact__info-title {
  font-family: var(--f-serif);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: .08em;
  color: var(--c-navy-deep);
}
.contact__mail {
  margin-top: 10px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--c-line-strong);
  font-family: var(--f-latin);
  font-size: clamp(1.3rem, 2.4vw, 1.65rem);
  letter-spacing: .04em;
}
.contact__mail a { color: var(--c-navy-deep); border-bottom: 1px solid var(--c-accent-soft); }
.contact__mail a:hover { color: var(--c-accent); }
.contact__meta { margin-top: 22px; }
.contact__meta > div + div { margin-top: 16px; }
.contact__meta dt {
  font-size: .76rem;
  letter-spacing: .14em;
  color: var(--c-text-muted);
}
.contact__meta dd { margin: 2px 0 0; font-size: .95rem; line-height: 1.8; }
.contact__note {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--c-line);
  font-size: .8rem;
  line-height: 1.85;
  color: var(--c-text-muted);
}

/* form */
.field + .field { margin-top: 24px; }
.field__label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  font-size: .9rem;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--c-navy-deep);
}
.req {
  padding: 2px 8px;
  background: var(--c-accent);
  color: #fff;
  font-size: .66rem;
  font-weight: 500;
  letter-spacing: .1em;
  line-height: 1.6;
}
.field__input {
  width: 100%;
  padding: 13px 16px;
  font-family: inherit;
  font-size: .96rem;
  line-height: 1.7;
  color: var(--c-text);
  background: #fff;
  border: 1px solid var(--c-line-strong);
  border-radius: 0;
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
  -webkit-appearance: none;
  appearance: none;
}
.field__input:focus {
  outline: none;
  border-color: var(--c-navy);
  box-shadow: 0 0 0 3px rgba(15, 47, 82, .1);
}
.field__input--area { resize: vertical; min-height: 150px; }

.field__select { position: relative; }
.field__select::after {
  content: "";
  position: absolute;
  right: 18px; top: 50%;
  width: 8px; height: 8px;
  margin-top: -6px;
  border-right: 1.5px solid var(--c-navy);
  border-bottom: 1.5px solid var(--c-navy);
  transform: rotate(45deg);
  pointer-events: none;
}
.field__select select {
  width: 100%;
  padding: 13px 44px 13px 16px;
  font-family: inherit;
  font-size: .96rem;
  color: var(--c-text);
  background: #fff;
  border: 1px solid var(--c-line-strong);
  border-radius: 0;
  -webkit-appearance: none;
  appearance: none;
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.field__select select:focus {
  outline: none;
  border-color: var(--c-navy);
  box-shadow: 0 0 0 3px rgba(15, 47, 82, .1);
}

.field.is-error .field__input,
.field.is-error select { border-color: var(--c-accent); background: #fdf7f5; }
.field__error {
  margin-top: 6px;
  font-size: .8rem;
  color: var(--c-accent);
  min-height: 0;
}
.field__error:empty { display: none; }

.field--check { margin-top: 28px; }
.check {
  display: inline-flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  font-size: .92rem;
}
.check input { position: absolute; opacity: 0; width: 0; height: 0; }
.check__box {
  flex: none;
  width: 20px; height: 20px;
  margin-top: 5px;
  border: 1px solid var(--c-line-strong);
  background: #fff;
  transition: background .2s var(--ease), border-color .2s var(--ease);
}
.check input:checked + .check__box {
  background: var(--c-navy);
  border-color: var(--c-navy);
  background-image: linear-gradient(45deg, transparent 45%, #fff 45%, #fff 55%, transparent 55%),
                    linear-gradient(-45deg, transparent 45%, #fff 45%, #fff 55%, transparent 55%);
  background-size: 14px 14px;
  background-position: center;
  background-repeat: no-repeat;
}
.check input:focus-visible + .check__box { outline: 2px solid var(--c-accent); outline-offset: 2px; }
.check__text { display: inline-flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.field--check .field__error { margin-left: 32px; }

.form__submit { margin-top: 34px; }
.form__status {
  margin-top: 16px;
  font-size: .9rem;
  line-height: 1.8;
  text-align: center;
}
.form__status.is-ok { color: var(--c-navy); }
.form__status.is-ng { color: var(--c-accent); }

/* ---------- 14. フッター ---------- */
.site-footer {
  background: var(--c-navy-deep);
  color: rgba(255, 255, 255, .74);
  font-size: .88rem;
}
.site-footer a { color: rgba(255, 255, 255, .74); }
.site-footer a:hover { color: #fff; }
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 40px;
  padding-block: 56px 40px;
}
.site-footer__name {
  font-family: var(--f-serif);
  font-weight: 600;
  font-size: 1.12rem;
  letter-spacing: .06em;
  color: #fff;
}
.site-footer__en {
  margin-top: 6px;
  font-family: var(--f-latin);
  font-size: .9rem;
  letter-spacing: .18em;
  color: rgba(255, 255, 255, .55);
}
.site-footer__addr { margin-top: 14px; font-size: .84rem; line-height: 1.9; }
.site-footer__nav ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(140px, auto));
  gap: 10px 40px;
}
.site-footer__nav a {
  position: relative;
  padding-left: 14px;
  font-size: .86rem;
}
.site-footer__nav a::before {
  content: "";
  position: absolute;
  left: 0; top: .72em;
  width: 6px; height: 1px;
  background: var(--c-accent);
}
.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 20px;
  border-top: 1px solid rgba(255, 255, 255, .14);
}
.copyright {
  font-family: var(--f-latin);
  font-size: .82rem;
  letter-spacing: .1em;
  color: rgba(255, 255, 255, .5);
}
.pagetop a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-latin);
  font-size: .82rem;
  letter-spacing: .18em;
}
.pagetop a::before {
  content: "";
  width: 8px; height: 8px;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
  transform: rotate(-45deg);
  transition: transform .3s var(--ease);
}
.pagetop a:hover::before { transform: rotate(-45deg) translate(3px, -3px); }

/* ---------- 15. スクロールリビール ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- 16. レスポンシブ ---------- */
@media (max-width: 1024px) {
  .gnav__list { gap: 18px; }
  .gnav__list > li > a { font-size: .8rem; }
  .brand__ja { font-size: .96rem; }
}

@media (max-width: 900px) {
  :root { --h-header: 68px; --pad-x: 20px; }

  .pc-only { display: none; }
  .sp-only { display: inline; }

  .nav-toggle { display: inline-flex; }

  .gnav {
    position: fixed;
    inset: calc(var(--h-header) + 32px) 0 auto 0;
    max-height: calc(100dvh - var(--h-header) - 32px);
    overflow-y: auto;
    background: #fff;
    border-top: 1px solid var(--c-line);
    box-shadow: 0 20px 40px rgba(15, 47, 82, .12);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s var(--ease), transform .3s var(--ease), visibility .3s;
  }
  .gnav.is-open { opacity: 1; visibility: visible; transform: none; }
  .gnav__list { display: block; padding: 8px var(--pad-x) 28px; }
  .gnav__list > li { border-bottom: 1px solid var(--c-line); }
  .gnav__list > li > a { padding: 16px 4px; font-size: .95rem; }
  .gnav__list > li > a::after { display: none; }
  .gnav__cta {
    margin-top: 20px;
    text-align: center;
    padding: 16px !important;
  }
  .gnav__list > li:last-child { border-bottom: none; }

  .utility-bar__tag { display: none; }
  .utility-bar__inner { justify-content: flex-end; }

  .section__title-en { position: static; display: block; margin-top: 8px; font-size: .9rem; }
  .section__head { margin-bottom: 34px; }

  .pcm__grid,
  .contact__grid { grid-template-columns: 1fr; }

  .info-table th, .info-table td { display: block; width: auto; padding: 0; border: none; }
  .info-table tr {
    display: block;
    padding: 18px 0;
    border-bottom: 1px solid var(--c-line);
  }
  .info-table th { margin-bottom: 4px; font-size: .82rem; color: var(--c-accent); }

  .officer-list li { gap: 12px; }

  .site-footer__inner { flex-direction: column; gap: 30px; padding-block: 44px 30px; }
}

@media (max-width: 560px) {
  body { font-size: 15px; }
  .hero__inner { padding-block: 56px 64px; }
  .hero__eyebrow { font-size: .8rem; letter-spacing: .22em; }
  .hero__actions .btn { width: 100%; justify-content: center; }
  .brand__mark { width: 34px; }
  .brand__ja { font-size: .8rem; letter-spacing: 0; }
  .brand__en { font-size: .68rem; }
  .member-card { padding: 28px 22px 26px; }
  .contact__info { padding: 26px 22px; }
  .feature-badges li { flex-direction: column; align-items: flex-start; gap: 4px; }
  .site-footer__nav ul { grid-template-columns: 1fr 1fr; gap: 10px 20px; }
}

/* ---------- 17. モーション低減 / 印刷 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .site-header, .hero__bands, .nav-toggle, .pagetop, .contact__form { display: none !important; }
  body { font-size: 11pt; color: #000; }
  .section { padding-block: 18pt; break-inside: avoid; }
  .reveal { opacity: 1 !important; transform: none !important; }
}
.contact__honeypot {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}