:root {
  /* ISHC：国際性・学術性を表すネイビー／ティール。
     ゴールドを品格のあるアクセントとして使用する。 */
  --green-950: #102c3d;
  --green-900: #173a52;
  --green-800: #245f6d;
  --green-700: #2b7c82;
  --green-100: #ddecee;
  --green-50: #f1f6f7;
  --green-50: #f1f6f7;
  --orange: #c69a4b;
  --orange-light: #e5c98a;
  --cream: #f7f4ed;
  --ink: #22323b;
  --muted: #60727a;
  --line: #d8e4e7;
  --white: #fff;
  --serif: "Shippori Mincho", "Noto Serif JP", serif;
  --serif-en: "Cormorant Garamond", serif;
  --sans: "Noto Sans JP", "Noto Sans KR", "Noto Sans TC", sans-serif;
  --wrap: 1180px;
  --gutter: clamp(20px, 4vw, 48px);
  --header-h: 80px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 34px); }
body { color: var(--ink); background: var(--white); font-family: var(--sans); line-height: 1.85; }
html[lang^="zh"] body { font-family: "Noto Sans TC", var(--sans); }
body:has(.global-nav.open) { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.wrap { width: min(var(--wrap), calc(100% - var(--gutter) * 2)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.skip-link { position: fixed; z-index: 999; top: 8px; left: 8px; padding: 8px 14px; background: #fff; transform: translateY(-160%); }
.skip-link:focus { transform: none; }

.preview-bar {
  min-height: 32px; display: grid; place-items: center; padding: 5px var(--gutter);
  color: #fff; background: var(--orange); font-size: 12px; letter-spacing: .04em; text-align: center;
}
.site-header {
  position: sticky; z-index: 100; top: 0; height: var(--header-h);
  background: rgba(255,255,255,.96); border-bottom: 1px solid rgba(23,58,82,.12);
  backdrop-filter: blur(14px);
}
.header-inner {
  width: min(1380px, calc(100% - 32px)); height: 100%; margin: auto;
  display: flex; align-items: center; justify-content: space-between; gap: 22px;
}
.brand { display: flex; align-items: center; gap: 12px; flex: none; }
.brand-mark {
  display: grid; place-items: center; width: 58px; height: 58px; color: #fff;
  border-radius: 50%; background: var(--green-800); font-family: var(--serif-en);
  font-size: 19px; font-weight: 700; letter-spacing: .05em;
}
.brand-name { display: flex; flex-direction: column; line-height: 1.25; }
.brand-name strong { color: var(--green-900); font-family: var(--serif-en); font-size: 16px; letter-spacing: .03em; }
.brand-name small { color: var(--muted); font-size: 11px; letter-spacing: .16em; }
.global-nav { display: flex; align-items: center; gap: clamp(12px, 1.5vw, 26px); }
.global-nav > a { font-size: 13px; font-weight: 500; white-space: nowrap; }
.global-nav > a:hover { color: var(--orange); }
.lang-switch { display: flex; overflow: hidden; border: 1px solid var(--green-800); border-radius: 999px; }
.lang-switch button { border: 0; background: transparent; padding: 5px 8px; color: var(--green-900); font-size: 11px; cursor: pointer; white-space: nowrap; }
.lang-switch button + button { border-left: 1px solid var(--green-800); }
.lang-switch button.active { color: #fff; background: var(--green-800); }
.menu-btn { display: none; }

.hero {
  position: relative; overflow: hidden; min-height: min(820px, calc(100vh - 32px));
  display: grid; align-items: center; color: #fff;
  background:
    radial-gradient(circle at 78% 28%, rgba(244,201,149,.16), transparent 25%),
    linear-gradient(125deg, var(--green-950), var(--green-900) 52%, var(--green-700));
}
.hero::after {
  content: ""; position: absolute; inset: auto 0 0; height: 160px;
  background: linear-gradient(to top, rgba(9,31,45,.34), transparent);
}
.hero-inner, .hero-inner { position: relative; z-index: 2; padding-block: clamp(90px, 14vw, 160px) 110px; }
.eyebrow, .eyebrow, .section-no, .section-no { color: var(--orange-light); font-family: var(--serif-en); font-size: 15px; font-weight: 600; letter-spacing: .2em; text-transform: uppercase; }
.hero h1 { max-width: 890px; margin-top: 24px; font-family: var(--serif); font-size: clamp(38px, 6.2vw, 76px); font-weight: 600; line-height: 1.45; letter-spacing: .06em; }
.hero h1 { font-family: var(--serif-en); font-size: clamp(42px, 6.4vw, 82px); line-height: 1.08; letter-spacing: .02em; }
html[lang="en"] .hero h1 { font-family: var(--serif-en); font-size: clamp(48px, 7vw, 88px); line-height: 1.05; }
.hero-copy, .hero-copy { max-width: 720px; margin-top: 28px; color: rgba(255,255,255,.82); font-size: clamp(16px, 1.5vw, 19px); }
.hero-actions, .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 38px; }
.btn { min-height: 52px; display: inline-flex; align-items: center; justify-content: space-between; gap: 28px; padding: 12px 22px; font-weight: 700; font-size: 14px; transition: .2s; }
.btn-primary, .btn-primary { background: var(--orange); }
.btn-primary:hover, .btn-primary:hover { background: #d4ab62; transform: translateY(-2px); }
.btn-secondary, .btn-secondary { border: 1px solid rgba(255,255,255,.5); }
.btn-secondary:hover, .btn-secondary:hover { background: rgba(255,255,255,.1); }
.hero-meta, .hero-meta { display: flex; flex-wrap: wrap; gap: 1px; margin-top: 60px; }
.hero-meta > div, .hero-meta > div { width: 160px; padding: 13px 18px; background: rgba(255,255,255,.08); border-left: 2px solid var(--orange); }
.hero-meta span, .hero-meta span { display: block; font-family: var(--serif-en); font-size: 34px; line-height: 1; }
.hero-meta small, .hero-meta small { color: rgba(255,255,255,.72); font-size: 12px; }
.hero-orbit, .hero-orbit { position: absolute; border: 1px solid rgba(255,255,255,.12); border-radius: 50%; }
.orbit-one { width: 620px; height: 620px; right: -120px; top: 6%; }
.orbit-two { width: 360px; height: 360px; right: 70px; top: 23%; border-color: rgba(244,201,149,.25); }

.section { padding-block: clamp(76px, 9vw, 130px); }
#gallery { overflow-x: hidden; }
.section-tint, .section-tint { background: var(--green-50); }
.section-head, .section-head { max-width: 790px; margin-bottom: clamp(38px, 5vw, 64px); }
.section-head .section-no, .section-head .section-no { color: var(--orange); }
.section-head h2, .section-head h2 { margin-top: 12px; color: var(--green-900); font-family: var(--serif); font-size: clamp(30px, 4.5vw, 52px); font-weight: 600; letter-spacing: .06em; }
html[lang="en"] .section-head h2, html[lang="en"] .section-head h2 { font-family: var(--serif-en); font-size: clamp(38px, 5vw, 60px); letter-spacing: .02em; }
.section-head > p:last-child, .section-head > p:last-child { margin-top: 18px; color: var(--muted); font-size: 17px; }

.org-note {
  margin: 0 0 28px; padding: 18px 22px; color: var(--muted); background: #fff;
  border: 1px solid var(--line); border-left: 4px solid var(--orange); font-size: 14px; line-height: 1.8;
}

.about-feature {
  display: grid; grid-template-columns: 1fr 1fr; gap: 18px;
  margin-bottom: 18px;
}
.about-image-placeholder {
  min-height: 430px; display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: rgba(255,255,255,.78); text-align: center;
  background:
    radial-gradient(circle at 72% 24%, rgba(229,201,138,.35), transparent 25%),
    linear-gradient(145deg, var(--green-700), var(--green-950));
}
.about-image-placeholder span { font-family: var(--serif-en); font-size: clamp(54px, 9vw, 100px); letter-spacing: .08em; }
.about-image-placeholder p { margin-top: 12px; font-size: 13px; letter-spacing: .15em; }
.about-definitions { display: grid; gap: 18px; }
.about-definitions article { padding: clamp(30px, 4vw, 48px); border: 1px solid var(--line); background: var(--green-50); }
.about-definitions span { color: var(--orange); font-family: var(--serif-en); font-weight: 700; letter-spacing: .18em; }
.about-definitions h3 { margin-top: 16px; color: var(--green-900); font-family: var(--serif); font-size: 26px; }
.about-definitions p { margin-top: 14px; color: var(--muted); }

.vision-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 18px; }
.vision-card { min-height: 310px; padding: clamp(32px, 5vw, 58px); border: 1px solid var(--line); background: #fff; }
.vision-main { color: #fff; border: 0; background: var(--green-800); }
.vision-card > span { color: var(--orange); font-family: var(--serif-en); font-size: 15px; font-weight: 700; letter-spacing: .2em; }
.vision-main > span { color: var(--orange-light); }
.vision-card h3 { margin-top: 28px; color: var(--green-900); font-family: var(--serif); font-size: clamp(23px, 3vw, 32px); line-height: 1.65; }
.vision-main h3 { color: #fff; }
.vision-card p { margin-top: 18px; color: var(--muted); }
.vision-main p { color: rgba(255,255,255,.78); }

.honorary-grid, .honorary-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-bottom: 26px; }
.honorary-grid article { padding: 26px 30px; background: var(--green-800); color: #fff; }
.honorary-grid span { display: block; color: var(--orange-light); font-size: 13px; }
.honorary-grid strong { display: block; margin-top: 7px; font-family: var(--serif); font-size: 25px; letter-spacing: .1em; }
.advisor-message {
  display: grid; grid-template-columns: 230px 1fr; gap: clamp(28px, 5vw, 64px);
  align-items: center; margin-bottom: 26px; padding: clamp(30px, 4vw, 52px);
  background: #fff; border: 1px solid var(--line);
}
.advisor-portrait {
  width: 100%; aspect-ratio: 1; display: grid; place-items: center;
  color: rgba(255,255,255,.82); background:
    radial-gradient(circle at 70% 25%, rgba(229,201,138,.38), transparent 26%),
    linear-gradient(145deg, var(--green-700), var(--green-900));
  font-family: var(--serif); font-size: 54px; border-radius: 50%;
}
.message-label { color: var(--orange); font-family: var(--serif-en); font-size: 13px; font-weight: 700; letter-spacing: .12em; }
.advisor-message h3 { margin-top: 9px; color: var(--green-900); font-family: var(--serif); font-size: 27px; }
.advisor-message-body > p { margin-top: 18px; color: var(--muted); }
.advisor-sign { display: flex; align-items: baseline; gap: 14px; margin-top: 28px; }
.advisor-sign strong { color: var(--green-900); font-family: var(--serif); font-size: 21px; }
.advisor-sign small { color: var(--muted); font-size: 12px; }
.country-board { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.advisor-departments { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 24px; }
.board-country { min-height: 210px; padding: 26px; background: #fff; border: 1px solid var(--line); }
.advisor-departments .board-country { min-height: 0; }
.board-country h3 { color: var(--orange); font-family: var(--serif-en); font-size: 20px; }
.board-country ul { margin-top: 18px; list-style: none; }
.board-country li { padding-block: 6px; border-bottom: 1px solid var(--line); font-size: 14px; }
.board-country li.is-tbd { color: var(--muted); border-bottom-style: dashed; }
.section-note { margin-top: 24px; color: var(--muted); font-size: 13px; }

.pillar-grid, .pillar-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.pillar-card { min-height: 350px; padding: 32px 26px; background: #fff; }
.pillar-card .pillar-no { color: var(--orange); font-family: var(--serif-en); font-size: 28px; }
.pillar-card .pillar-en { display: block; margin-top: 10px; color: var(--muted); font-family: var(--serif-en); font-size: 12px; letter-spacing: .06em; }
.pillar-card h3 { margin-top: 18px; color: var(--green-900); font-family: var(--serif); font-size: 22px; line-height: 1.55; }
.pillar-card p { margin-top: 16px; color: var(--muted); font-size: 14px; }

.summit { color: #fff; background: var(--green-900); }
.summit-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(42px, 7vw, 90px); align-items: start; }
.summit h2 { margin-top: 14px; font-family: var(--serif-en); font-size: clamp(39px, 5vw, 62px); line-height: 1.05; }
.summit-copy, .summit-copy { margin-top: 24px; color: rgba(255,255,255,.8); }
.summit-note { margin-top: 22px; color: var(--orange-light); font-size: 13px; }
.summit .btn { margin-top: 26px; }
.summit-year { margin-top: 8px; margin-bottom: 14px; color: #fff; font-family: var(--serif); font-size: 20px; }
.summit .summit-year { color: #fff; margin-top: 8px; }
.summit .summit-year:first-child { margin-top: 0; }
.summit-year + .city-grid { margin-bottom: 28px; }
.btn-disabled, .btn-disabled { opacity: .62; cursor: not-allowed; }
.city-grid, .city-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.city-card { position: relative; min-height: 140px; padding: 24px; overflow: hidden; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.18); }
.city-card::after { content: attr(data-no); position: absolute; right: 15px; bottom: -20px; color: rgba(255,255,255,.05); font-family: var(--serif-en); font-size: 100px; line-height: 1; }
.city-card span { color: var(--orange-light); font-size: 12px; letter-spacing: .12em; }
.city-card h3 { margin-top: 22px; font-family: var(--serif); font-size: clamp(20px, 2.2vw, 26px); line-height: 1.35; }
.city-card p { color: rgba(255,255,255,.58); font-size: 12px; }

.activity-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.activity-card { position: relative; min-height: 280px; padding: 30px; overflow: hidden; border: 1px solid var(--line); background: #fff; }
.activity-card::after {
  content: attr(data-no); position: absolute; right: 12px; bottom: -30px;
  color: var(--green-100); font-family: var(--serif-en); font-size: 120px; line-height: 1;
}
.activity-card .activity-label { position: relative; z-index: 1; color: var(--orange); font-size: 11px; letter-spacing: .15em; text-transform: uppercase; }
.activity-card h3 { position: relative; z-index: 1; margin-top: 38px; color: var(--green-900); font-family: var(--serif); font-size: 24px; }
.activity-card p { position: relative; z-index: 1; margin-top: 16px; color: var(--muted); font-size: 13px; }

.ambassador-summary { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }
.ambassador-summary span { padding: 7px 14px; background: #fff; border: 1px solid var(--line); border-radius: 999px; font-size: 12px; }
.ambassador-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.ambassador-card { min-height: 150px; display: flex; flex-direction: column; justify-content: space-between; padding: 22px; background: #fff; border: 1px solid var(--line); }
.ambassador-card .country { color: var(--orange); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; }
.ambassador-card strong { color: var(--green-900); font-family: var(--serif); font-size: 19px; letter-spacing: .06em; }
.ambassador-card.is-tbd { color: #8b9691; border-style: dashed; background: rgba(255,255,255,.55); }
.ambassador-card.is-tbd strong { color: #8b9691; font-family: var(--sans); font-size: 14px; font-weight: 500; }

.partnership-list { border-top: 1px solid var(--line); }
.partnership-empty {
  display: grid; grid-template-columns: 160px 1fr; gap: 28px; align-items: center;
  min-height: 180px; padding: 34px 0; border-bottom: 1px solid var(--line);
}
.partnership-empty .mark {
  display: grid; place-items: center; width: 90px; height: 90px;
  color: var(--orange); background: var(--green-50); border-radius: 50%;
  font-family: var(--serif-en); font-size: 32px;
}
.partnership-empty h3 { color: var(--green-900); font-family: var(--serif); font-size: 22px; }
.partnership-empty p { margin-top: 8px; color: var(--muted); font-size: 13px; }

.secretary-card { display: flex; align-items: center; gap: 18px; padding: 26px 30px; color: #fff; background: var(--green-800); }
.secretary-card span { color: var(--orange-light); font-size: 13px; }
.secretary-card strong { font-family: var(--serif); font-size: 24px; }
.secretary-card small { margin-left: auto; }
.department-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-top: 16px; }
.department-card { padding: 22px; border: 1px solid var(--line); }
.department-card h3 { color: var(--green-900); font-size: 15px; }
.department-card p { margin-top: 8px; color: var(--muted); font-size: 12px; }
.sub-title { margin-top: 60px; color: var(--green-900); font-family: var(--serif); font-size: 26px; }
.chapter-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 20px; }
.chapter-card { padding: 28px; background: var(--green-50); border-top: 3px solid var(--orange); }
.chapter-card h3 { color: var(--green-900); font-family: var(--serif); font-size: 22px; }
.chapter-card p { margin-top: 10px; color: var(--muted); font-size: 13px; }

.gallery-carousel { position: relative; margin-top: 8px; width: min(1280px, 100%); margin-inline: auto; }
.gallery-stage {
  position: relative;
  height: clamp(220px, 34vw, 430px);
  overflow: visible;
}
.gallery-slide {
  position: absolute; inset: 0 auto 0 50%;
  width: min(1040px, 84%);
  margin: 0;
  transform: translateX(-50%) scale(0.985);
  opacity: 0;
  overflow: hidden;
  background: #102c3d;
  pointer-events: none;
  z-index: 0;
  transition: opacity .8s ease-in-out, transform 1.1s cubic-bezier(.4,0,.2,1);
}
.gallery-slide.is-current {
  transform: translateX(-50%) scale(1);
  opacity: 1;
  z-index: 3;
  pointer-events: auto;
  box-shadow: 0 18px 48px rgba(16,44,61,.22);
}
.gallery-slide.is-prev,
.gallery-slide.is-next {
  transform: translateX(-50%) scale(0.985);
  opacity: 0;
}
.gallery-slide img {
  width: 100%; height: 100%; object-fit: contain; object-position: center; display: block;
}
.gallery-slide span {
  position: absolute; inset: auto 0 0; padding: 28px 18px 14px;
  color: #fff; font-size: 13px; letter-spacing: .06em;
  background: linear-gradient(transparent, rgba(9,31,45,.78));
}
.gallery-slide.is-prev span,
.gallery-slide.is-next span { opacity: 0; }
.gallery-controls {
  display: flex; align-items: center; justify-content: center; gap: 18px;
  margin-top: 22px;
}
.gallery-btn {
  position: absolute;
  top: clamp(110px, 17vw, 215px);
  z-index: 5;
  transform: translateY(-50%);
  width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 50%;
  background: rgba(255,255,255,.9); color: var(--green-800); font-family: var(--serif-en);
  font-size: 28px; line-height: 1; cursor: pointer; transition: .2s;
  box-shadow: 0 6px 20px rgba(9,31,45,.18);
  backdrop-filter: blur(6px);
}
.gallery-btn[data-gallery-dir="-1"] { left: calc(8% + 14px); }
.gallery-btn[data-gallery-dir="1"] { right: calc(8% + 14px); }
.gallery-btn:hover {
  border-color: var(--orange); color: var(--orange); background: #fff;
  transform: translateY(-50%) scale(1.06);
}
.gallery-dots { display: flex; gap: 8px; }
.gallery-dots button {
  width: 8px; height: 8px; padding: 0; border: 0; border-radius: 50%;
  background: #c5d4d7; cursor: pointer; transition: .25s;
}
.gallery-dots button.is-active { width: 22px; border-radius: 999px; background: var(--orange); }

@media (prefers-reduced-motion: reduce) {
  .gallery-slide { transition: none; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}

.membership { color: #fff; background: var(--green-950); }
.section-head-light h2, .section-head-light h2 { color: #fff; }
.section-head-light > p:last-child, .section-head-light > p:last-child { color: rgba(255,255,255,.7); }
.membership-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.membership-card { min-height: 260px; padding: 28px; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.14); }
.membership-card h3 { color: #fff; font-family: var(--serif); font-size: 22px; }
.membership-card .price { margin-top: 20px; color: var(--orange-light); font-family: var(--serif-en); font-size: 28px; }
.membership-card .price small { font-family: var(--sans); font-size: 12px; }
.membership-card p { margin-top: 18px; color: rgba(255,255,255,.68); font-size: 13px; }
.membership-note { margin-top: 24px; color: rgba(255,255,255,.58); font-size: 13px; }

.staff-entry, .staff-entry { color: #fff; background: var(--green-700); }
.staff-entry-inner { display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: center; }
.staff-entry h2 { margin-top: 10px; font-family: var(--serif); font-size: clamp(29px, 4vw, 45px); }
.staff-entry p:not(.section-no) { margin-top: 12px; color: rgba(255,255,255,.78); }
.staff-entry-action { min-width: 280px; display: flex; flex-direction: column; gap: 10px; }
.staff-entry-action .btn { background: var(--orange); }
.staff-entry-action small { color: rgba(255,255,255,.68); font-size: 12px; }

.about-prose, .definition-prose {
  max-width: 820px; display: grid; gap: 18px; color: var(--muted); font-size: 17px;
}
.definition-essay { max-width: 820px; display: grid; gap: 42px; }
.definition-block h3 {
  margin-bottom: 14px; color: var(--green-900); font-family: var(--serif); font-size: clamp(20px, 2.2vw, 26px);
}
.definition-block p { color: var(--muted); font-size: 17px; }
.definition-block p + p { margin-top: 16px; }
.definition-quote {
  color: var(--green-900); font-family: var(--serif); font-size: clamp(20px, 2.4vw, 26px); line-height: 1.7;
}
.definition-quotes { display: grid; gap: 14px; margin: 18px 0; }
.definition-manifesto {
  padding: clamp(28px, 4vw, 48px); background: var(--green-50); border-left: 4px solid var(--orange);
}
.definition-manifesto h3 { margin-bottom: 18px; color: var(--green-900); font-family: var(--serif); font-size: clamp(22px, 2.4vw, 28px); }
.definition-manifesto p { color: var(--ink); font-size: 16px; }
.definition-manifesto p + p { margin-top: 14px; }
.theory-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-top: 40px; }
.theory-card { min-height: 140px; padding: 22px 18px; border: 1px solid var(--line); background: var(--green-50); }
.theory-card span { color: var(--orange); font-family: var(--serif-en); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; }
.theory-card strong { display: block; margin-top: 14px; color: var(--green-900); font-family: var(--serif-en); font-size: 18px; line-height: 1.35; font-weight: 600; }

.journey-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin: 36px 0 42px; background: rgba(255,255,255,.14); }
.summit .journey-stats { border: 1px solid rgba(255,255,255,.14); }
.journey-stats > div { padding: 22px 24px; background: rgba(9,31,45,.28); }
.journey-stats strong { display: block; font-family: var(--serif-en); font-size: 32px; line-height: 1.1; }
.journey-stats small { color: rgba(255,255,255,.7); font-size: 12px; }
.summit-media { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(32px, 6vw, 72px); align-items: start; }
.video-placeholder {
  min-height: 280px; display: grid; place-items: center; padding: 32px;
  color: rgba(255,255,255,.78); text-align: center; letter-spacing: .08em;
  background:
    radial-gradient(circle at 70% 30%, rgba(229,201,138,.28), transparent 28%),
    rgba(255,255,255,.06);
  border: 1px dashed rgba(255,255,255,.28);
}
.summit-media .btn { margin-top: 18px; }

.sub-title { margin: 56px 0 18px; color: var(--green-900); font-family: var(--serif-en); font-size: 22px; letter-spacing: .04em; }
.people-note { margin: 0 0 20px; color: var(--muted); font-size: 14px; }
.honorary-grid small { display: block; margin-top: 6px; color: rgba(255,255,255,.72); font-size: 13px; }
.ambassador-card small { margin-top: 10px; color: var(--muted); font-size: 12px; line-height: 1.6; }

.program-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.program-card { padding: 0 0 28px; border: 1px solid var(--line); background: #fff; }
.program-photo {
  aspect-ratio: 4 / 3; display: grid; place-items: center; padding: 0; overflow: hidden;
  color: rgba(255,255,255,.82); text-align: center; font-size: 13px; letter-spacing: .06em;
  background:
    radial-gradient(circle at 78% 24%, rgba(229,201,138,.35), transparent 26%),
    linear-gradient(145deg, var(--green-700), var(--green-950));
}
.program-photo img { width: 100%; height: 100%; object-fit: cover; display: block; object-position: center 30%; }
.program-photo span { padding: 20px; }
.program-card small { display: block; margin: 20px 24px 0; color: var(--orange); font-family: var(--serif-en); font-size: 12px; letter-spacing: .12em; }
.program-card h3 { margin: 8px 24px 0; color: var(--green-900); font-family: var(--serif); font-size: 22px; }
.program-card p { margin: 12px 24px 0; color: var(--muted); font-size: 14px; }

.officer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.officer-card { min-height: 160px; padding: 24px; border: 1px solid var(--line); background: #fff; }
.officer-card span { color: var(--orange); font-family: var(--serif-en); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; }
.officer-card strong { display: block; margin-top: 12px; color: var(--green-900); font-family: var(--serif-en); font-size: 20px; }
html[lang="ja"] .officer-card strong,
html[lang="ja"] .honorary-grid strong,
html[lang^="zh"] .officer-card strong,
html[lang^="zh"] .honorary-grid strong,
html[lang="ko"] .officer-card strong,
html[lang="ko"] .honorary-grid strong {
  font-family: var(--serif); letter-spacing: .08em;
}
.officer-card small { display: block; margin-top: 8px; color: var(--muted); font-size: 13px; }

.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 32px; }
.contact-card {
  min-height: 210px; display: flex; flex-direction: column; justify-content: space-between;
  padding: 28px; color: #fff; border: 1px solid rgba(255,255,255,.18); background: rgba(255,255,255,.08);
}
.contact-card h3 { font-family: var(--serif-en); font-size: 24px; }
.contact-card p { margin-top: 12px; color: rgba(255,255,255,.76); font-size: 14px; }
.contact-card span { margin-top: 24px; color: var(--orange-light); font-size: 12px; letter-spacing: .04em; }
.contact-card:hover { background: rgba(255,255,255,.12); }

.site-footer { padding-block: 40px; color: rgba(255,255,255,.7); background: #091f2d; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.footer-inner div { display: flex; flex-direction: column; }
.footer-inner strong { color: #fff; font-family: var(--serif-en); font-size: 18px; }
.footer-inner span, .footer-inner a { font-size: 12px; }
.footer-inner a:hover { color: var(--orange-light); }

@media (max-width: 1120px) {
  .brand-name { display: none; }
  .global-nav { gap: 13px; }
  .country-board, .pillar-grid, .membership-grid, .advisor-departments { grid-template-columns: repeat(2, 1fr); }
  .ambassador-grid { grid-template-columns: repeat(3, 1fr); }
  .department-grid { grid-template-columns: repeat(3, 1fr); }
  .theory-grid { grid-template-columns: repeat(2, 1fr); }
  .program-grid, .officer-grid, .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .photo-placeholder.is-wide { grid-column: span 1; }
}
@media (max-width: 1180px) {
  :root { --header-h: 68px; }
  .brand-mark { width: 50px; height: 50px; font-size: 17px; }
  .menu-btn { display: flex; width: 46px; height: 46px; flex-direction: column; justify-content: center; gap: 5px; border: 0; background: transparent; }
  .menu-btn > span:not(.sr-only) { display: block; width: 24px; height: 2px; margin-inline: auto; background: var(--green-900); transition: .2s; }
  .menu-btn.open > span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-btn.open > span:nth-child(2) { opacity: 0; }
  .menu-btn.open > span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .global-nav { position: fixed; inset: var(--header-h) 0 0; display: flex; flex-direction: column; align-items: stretch; gap: 0; padding: 24px var(--gutter) 50px; background: #fff; transform: translateX(100%); transition: .25s; overflow-y: auto; }
  .global-nav.open { transform: none; }
  .global-nav > a { padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 16px; }
  .lang-switch { align-self: flex-start; margin-top: 24px; }
  .lang-switch button { padding: 7px 11px; }
  .about-feature, .vision-grid, .summit-layout, .staff-entry-inner, .summit-media { grid-template-columns: 1fr; }
  .chapter-grid, .theory-grid, .program-grid, .officer-grid, .contact-grid { grid-template-columns: 1fr; }
  .staff-entry-action { min-width: 0; align-items: flex-start; }
}
@media (max-width: 620px) {
  .preview-bar { font-size: 10px; }
  .hero { min-height: 680px; }
  .hero h1 br { display: none; }
  .hero-meta > div { width: calc(50% - 1px); }
  .honorary-grid, .country-board, .advisor-departments, .pillar-grid, .city-grid, .activity-grid, .ambassador-grid, .department-grid, .membership-grid { grid-template-columns: 1fr; }
  .advisor-message { grid-template-columns: 1fr; }
  .advisor-portrait { max-width: 160px; }
  .partnership-empty { grid-template-columns: 1fr; }
  .pillar-card { min-height: 0; }
  .secretary-card { align-items: flex-start; flex-direction: column; }
  .secretary-card small { margin-left: 0; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 720px) {
  .gallery-slide { width: 88%; }
  .gallery-btn { width: 40px; height: 40px; }
  .gallery-btn[data-gallery-dir="-1"] { left: calc(6% + 8px); }
  .gallery-btn[data-gallery-dir="1"] { right: calc(6% + 8px); }
}