/* =========================================================
   日本未来創造フォーラム — Editorial Institutional Design
   Standalone CSS. Design tokens, type scale, components.
========================================================= */

:root {
  /* --- Neutrals (warm paper foundation) --- */
  --paper: #f6f4ee;        /* warm off-white background */
  --paper-alt: #efece3;    /* slightly deeper stone for alt sections */
  --surface: #fbfaf6;      /* raised surface / cards */
  --ink: #1c1b18;          /* near-black charcoal text */
  --ink-soft: #4a4842;     /* secondary text */
  --ink-mute: #86837a;     /* labels, meta */
  --line: #d9d5c9;         /* hairline borders */
  --line-strong: #bfbaab;

  /* --- Accent (refined deep navy) --- */
  --navy: #1a3a5c;
  --navy-deep: #12283f;
  --navy-tint: #e7ebf0;

  /* --- Supporting category hues (used sparingly) --- */
  --clay: #9a5b3e;         /* warm secondary accent */

  /* --- Typography --- */
  --font-sans: "Noto Sans JP", system-ui, sans-serif;
  --font-serif: "Noto Serif JP", "Hiragino Mincho ProN", serif;

  /* --- Layout --- */
  --header-h: 76px;
  --maxw: 1180px;
  --gutter: clamp(1.25rem, 5vw, 4rem);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* =========================================================
   Reset & Base
========================================================= */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background-color: var(--paper);
  line-height: 1.8;
  font-size: clamp(0.95rem, 0.9rem + 0.2vw, 1.0625rem);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font: inherit; color: inherit; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute;
  left: 1rem; top: -100px;
  z-index: 2000;
  background: var(--navy);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: 2px;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 1rem; }

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

/* =========================================================
   Section framing
========================================================= */
.section {
  padding-block: clamp(4.5rem, 9vw, 8rem);
  position: relative;
}
.section--alt { background-color: var(--paper-alt); }

.section-head {
  display: flex;
  align-items: baseline;
  gap: clamp(1rem, 3vw, 2.5rem);
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}

.kicker {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--navy);
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  white-space: nowrap;
}
.kicker-index {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  color: var(--ink-mute);
  padding-right: 0.75rem;
  border-right: 1px solid var(--line-strong);
}

.section-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.6rem, 1.2rem + 1.8vw, 2.6rem);
  line-height: 1.3;
  letter-spacing: 0.04em;
}

/* =========================================================
   Buttons & links
========================================================= */
.btn {
  --btn-fg: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 1.6rem;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  border: 1px solid transparent;
  border-radius: 2px;
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease),
              border-color 0.35s var(--ease), transform 0.35s var(--ease);
}
.btn-arrow { transition: transform 0.35s var(--ease); }
.btn:hover .btn-arrow { transform: translateX(4px); }

.btn-primary {
  background-color: var(--navy);
  color: #fff;
}
.btn-primary:hover { background-color: var(--navy-deep); }

.btn-ghost {
  color: var(--ink);
  border-color: var(--line-strong);
  background-color: transparent;
}
.btn-ghost:hover { border-color: var(--ink); background-color: var(--ink); color: var(--paper); }

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--navy);
  position: relative;
  padding-bottom: 3px;
}
.link-more span { transition: transform 0.3s var(--ease); }
.link-more::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.link-more:hover::after { transform: scaleX(1); }
.link-more:hover span { transform: translateX(4px); }

/* =========================================================
   Header
========================================================= */
.header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  height: var(--header-h);
  z-index: 1000;
  background-color: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: background-color 0.4s var(--ease), border-color 0.4s var(--ease), height 0.4s var(--ease);
}
.header.scrolled {
  background-color: color-mix(in srgb, var(--paper) 94%, transparent);
  border-bottom-color: var(--line);
  height: 64px;
}

.header-inner {
  height: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand { display: inline-flex; align-items: center; gap: 0.7rem; }
.brand-mark { color: var(--navy); display: grid; place-items: center; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-jp {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.08em;
}
.brand-en {
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-mute);
  font-weight: 500;
}

.nav-list { display: flex; align-items: center; gap: clamp(1rem, 2.2vw, 2.2rem); }
.nav-link {
  position: relative;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding-block: 0.4rem;
  transition: color 0.3s var(--ease);
}
.nav-link::before {
  content: "";
  position: absolute;
  inset-block-start: -2px;
  inset-inline-start: 50%;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--navy);
  transform: translateX(-50%) scale(0);
  transition: transform 0.35s var(--ease);
}
.nav-link:hover { color: var(--ink); }
.nav-link.is-active { color: var(--navy); }
.nav-link.is-active::before { transform: translateX(-50%) scale(1); }

.nav-link--cta {
  padding: 0.5rem 1.05rem;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  color: var(--ink);
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}
.nav-link--cta::before { display: none; }
.nav-link--cta:hover { background: var(--navy); color: #fff; border-color: var(--navy); }
.nav-link--cta.is-active { color: #fff; background: var(--navy); border-color: var(--navy); }

/* Hamburger */
.hamburger { display: none; padding: 0.6rem; z-index: 1100; }
.hamburger-box { position: relative; display: block; width: 26px; height: 16px; }
.hamburger-line {
  position: absolute;
  inset-inline: 0;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.4s var(--ease), opacity 0.3s var(--ease), width 0.4s var(--ease);
}
.hamburger-line:nth-child(1) { top: 0; }
.hamburger-line:nth-child(2) { top: 50%; transform: translateY(-50%); width: 70%; }
.hamburger-line:nth-child(3) { bottom: 0; }
.hamburger[aria-expanded="true"] .hamburger-line:nth-child(1) { top: 50%; transform: translateY(-50%) rotate(45deg); }
.hamburger[aria-expanded="true"] .hamburger-line:nth-child(2) { opacity: 0; width: 0; }
.hamburger[aria-expanded="true"] .hamburger-line:nth-child(3) { bottom: auto; top: 50%; transform: translateY(-50%) rotate(-45deg); }

.nav-scrim {
  position: fixed; inset: 0;
  background: rgba(20, 18, 14, 0.4);
  backdrop-filter: blur(2px);
  z-index: 900;
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}
.nav-scrim.is-open { opacity: 1; }

/* =========================================================
   Hero
========================================================= */
.hero {
  position: relative;
  min-height: min(92vh, 820px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: calc(var(--header-h) + 2rem) 4rem;
  padding-inline: var(--gutter);
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 85% 0%, var(--surface) 0%, transparent 55%),
    var(--paper);
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: clamp(60px, 8vw, 110px) clamp(60px, 8vw, 110px);
  -webkit-mask-image: radial-gradient(120% 100% at 80% 10%, #000 0%, transparent 62%);
  mask-image: radial-gradient(120% 100% at 80% 10%, #000 0%, transparent 62%);
  opacity: 0.55;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--ink-mute);
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}
.hero-kicker-line { display: inline-block; width: clamp(28px, 5vw, 56px); height: 1px; background: var(--navy); }

.hero-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(2.6rem, 1.4rem + 6vw, 6rem);
  line-height: 1.16;
  letter-spacing: 0.03em;
  color: var(--ink);
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}
.hero-title span { display: block; }

.hero-lead {
  font-size: clamp(1rem, 0.95rem + 0.4vw, 1.2rem);
  color: var(--ink-soft);
  max-width: 34ch;
  line-height: 1.9;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; }

/* vertical Japanese tagline — editorial signature */
.hero-vertical {
  position: absolute;
  inset-block-start: calc(var(--header-h) + 1rem);
  inset-inline-end: max(2rem, calc((100vw - var(--maxw)) / 2 + var(--gutter)));
  writing-mode: vertical-rl;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.35em;
  color: var(--ink-mute);
  padding-block-start: 3.5rem;
}
.hero-vertical::before {
  content: "";
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: 50%;
  width: 1px; height: 2.5rem;
  background: var(--navy);
}

.scroll-indicator {
  position: absolute;
  inset-block-end: 2rem;
  inset-inline-start: max(var(--gutter), calc((100vw - var(--maxw)) / 2 + var(--gutter)));
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  color: var(--ink-mute);
}
.scroll-label { font-size: 0.68rem; letter-spacing: 0.28em; text-transform: uppercase; }
.scroll-line { position: relative; width: 56px; height: 1px; background: var(--line-strong); overflow: hidden; }
.scroll-line::after {
  content: ""; position: absolute; inset: 0; width: 40%;
  background: var(--navy);
  animation: scrollDot 2.2s var(--ease) infinite;
}
@keyframes scrollDot {
  0% { transform: translateX(-100%); }
  60%, 100% { transform: translateX(250%); }
}

.br-sp { display: none; }

/* =========================================================
   News — editorial list
========================================================= */
.news-list { border-top: 1px solid var(--line); }
.news-list li { border-bottom: 1px solid var(--line); }

.news-item {
  display: grid;
  grid-template-columns: minmax(190px, auto) 1fr auto;
  align-items: center;
  gap: clamp(1rem, 3vw, 2.5rem);
  padding-block: 1.5rem;
  position: relative;
  transition: color 0.3s var(--ease);
}
.news-item::before {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-start: calc(-1 * var(--gutter));
  width: 2px;
  background: var(--navy);
  transform: scaleY(0);
  transition: transform 0.4s var(--ease);
}
.news-item:hover::before { transform: scaleY(1); }

.news-meta { display: inline-flex; align-items: center; gap: 1rem; }
.news-date {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}
.news-cat {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 0.25rem 0.7rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  white-space: nowrap;
}
.news-cat--notice { color: var(--navy); }
.news-cat--event { color: var(--clay); }
.news-cat--report { color: var(--ink-mute); }

.news-title {
  font-size: 1.02rem;
  font-weight: 500;
  line-height: 1.6;
  transition: color 0.3s var(--ease);
}
.news-item:hover .news-title { color: var(--navy); }

.news-arrow {
  color: var(--line-strong);
  font-size: 1.1rem;
  transition: transform 0.35s var(--ease), color 0.35s var(--ease);
}
.news-item:hover .news-arrow { color: var(--navy); transform: translateX(6px); }

.news-item--lead { padding-block: 2rem; }
.news-item--lead .news-title { font-size: clamp(1.1rem, 1rem + 0.6vw, 1.4rem); font-weight: 500; }
.news-item--lead .news-date { font-size: 1.05rem; }

.news-foot { margin-top: 2.5rem; }

/* =========================================================
   About — asymmetric editorial columns
========================================================= */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}
.about-item {
  display: flex;
  gap: 1.5rem;
  padding: clamp(2rem, 3vw, 3rem) clamp(1.5rem, 2.5vw, 2.5rem);
  border-bottom: 1px solid var(--line);
  border-inline-end: 1px solid var(--line);
  transition: background-color 0.4s var(--ease);
}
.about-item:last-child { border-inline-end: none; }
.about-item:hover { background-color: var(--surface); }

.about-label {
  writing-mode: vertical-rl;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: 0.2em;
  color: var(--navy);
  position: relative;
  padding-inline-start: 0.5rem;
  flex-shrink: 0;
}
.about-label::before {
  content: "";
  position: absolute;
  inset-block-start: 0;
  inset-inline-end: 0;
  width: 2px; height: 2.2rem;
  background: var(--navy);
}
.about-heading {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 1rem;
}
.about-text { font-size: 0.95rem; color: var(--ink-soft); line-height: 1.95; }

/* =========================================================
   Activities
========================================================= */
.activity-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.25rem, 2.5vw, 2rem);
}
.activity {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  padding: clamp(1.75rem, 2.5vw, 2.5rem);
  position: relative;
  overflow: hidden;
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease);
}
.activity::after {
  content: "";
  position: absolute;
  inset-block-start: 0;
  inset-inline: 0;
  height: 2px;
  background: var(--navy);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease);
}
.activity:hover { transform: translateY(-6px); border-color: var(--line-strong); }
.activity:hover::after { transform: scaleX(1); }

.activity-visual {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  height: 96px;
  margin-bottom: 1.75rem;
  color: var(--navy);
}
.activity-num {
  font-family: var(--font-serif);
  font-size: 3.4rem;
  line-height: 1;
  font-weight: 500;
  color: var(--line-strong);
  transition: color 0.4s var(--ease);
}
.activity:hover .activity-num { color: var(--navy-tint); }
.activity-visual svg { transition: transform 0.5s var(--ease); }
.activity:hover .activity-visual svg { transform: translateY(-4px); }

.activity-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: 0.04em;
  margin-bottom: 0.85rem;
}
.activity-text { font-size: 0.92rem; color: var(--ink-soft); line-height: 1.9; margin-bottom: 1.75rem; }
.activity .link-more { margin-top: auto; }

/* =========================================================
   Members — editorial horizontal rows
========================================================= */
.member-list { border-top: 1px solid var(--line); }
.member {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  align-items: center;
  padding-block: clamp(1.5rem, 2.5vw, 2.25rem);
  border-bottom: 1px solid var(--line);
  transition: padding-inline-start 0.4s var(--ease);
}
.member:hover { padding-inline-start: 0.75rem; }

.member-photo {
  width: 96px; height: 96px;
  background:
    linear-gradient(135deg, var(--paper-alt), var(--surface));
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}
.member-photo::before {
  content: attr(data-initial);
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 500;
  color: var(--navy);
  opacity: 0.65;
}
.member-photo::after {
  content: "";
  position: absolute;
  inset-block-end: 0; inset-inline-start: 0;
  width: 100%; height: 3px;
  background: var(--navy);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.member:hover .member-photo::after { transform: scaleX(1); }

.member-info { display: flex; flex-direction: column; gap: 0.25rem; }
.member-role {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--navy);
}
.member-name {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.3rem;
  letter-spacing: 0.04em;
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  flex-wrap: wrap;
}
.member-name-en {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.member-desc { font-size: 0.9rem; color: var(--ink-soft); line-height: 1.8; max-width: 62ch; }

/* =========================================================
   Contact
========================================================= */
.contact-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}
.contact-intro .section-head { border-bottom: none; margin-bottom: 1.75rem; padding-bottom: 0; }
.contact-desc { color: var(--ink-soft); margin-bottom: 2.5rem; }

.contact-meta { display: flex; flex-direction: column; gap: 1.25rem; border-top: 1px solid var(--line); padding-top: 1.75rem; }
.contact-meta dt {
  font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink-mute); font-weight: 700; margin-bottom: 0.25rem;
}
.contact-meta dd { font-size: 0.95rem; color: var(--ink); }

.contact-form { display: flex; flex-direction: column; gap: 1.6rem; }
.field { display: flex; flex-direction: column; gap: 0.55rem; }
.field label {
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}
.req {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--clay);
  border: 1px solid currentColor;
  padding: 0.1rem 0.4rem;
  border-radius: 2px;
}
.field input,
.field textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line-strong);
  padding: 0.75rem 0.25rem;
  font-size: 1rem;
  transition: border-color 0.3s var(--ease), background-color 0.3s var(--ease);
}
.field textarea { resize: vertical; min-height: 120px; }
.field input::placeholder,
.field textarea::placeholder { color: var(--ink-mute); opacity: 0.7; }
.field input:focus,
.field textarea:focus {
  outline: none;
  border-bottom-color: var(--navy);
  background-color: color-mix(in srgb, var(--navy-tint) 45%, transparent);
}
.field.has-error input,
.field.has-error textarea { border-bottom-color: var(--clay); }

.btn-submit { align-self: flex-start; margin-top: 0.5rem; padding-inline: 2.5rem; }
.form-note { font-size: 0.85rem; color: var(--navy); min-height: 1.2em; }
.form-note.is-error { color: var(--clay); }

/* =========================================================
   Footer
========================================================= */
.footer { background: var(--navy-deep); color: #cdd6df; }
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  padding-block: clamp(3.5rem, 6vw, 5rem);
}
.footer-name {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.5rem, 1.2rem + 1vw, 2rem);
  letter-spacing: 0.08em;
  color: #fff;
}
.footer-en {
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: #8fa3b5;
  margin-top: 0.35rem;
  margin-bottom: 1.5rem;
}
.footer-desc { font-size: 0.9rem; color: #9fb0be; max-width: 34ch; line-height: 1.9; }
.footer-sns { display: flex; gap: 0.75rem; margin-top: 1.75rem; }
.footer-sns a {
  display: grid; place-items: center;
  width: 40px; height: 40px;
  border: 1px solid #2f4a63;
  border-radius: 2px;
  color: #9fb0be;
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}
.footer-sns a:hover { background: #fff; color: var(--navy-deep); border-color: #fff; }

.footer-nav-title {
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: #7f93a6;
  margin-bottom: 1.5rem;
}
.footer-nav ul { display: grid; gap: 0.9rem; }
.footer-nav a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.85rem;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: #cdd6df;
  transition: color 0.3s var(--ease), gap 0.3s var(--ease);
}
.footer-nav a span {
  font-size: 0.72rem;
  color: #7f93a6;
  letter-spacing: 0.05em;
  font-weight: 400;
}
.footer-nav a:hover { color: #fff; gap: 1.2rem; }

.footer-bottom { border-top: 1px solid #24384c; }
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding-block: 1.5rem;
  flex-wrap: wrap;
}
.footer-bottom p { font-size: 0.78rem; color: #7f93a6; letter-spacing: 0.04em; }
.footer-legal { display: flex; gap: 1.5rem; }
.footer-legal a:hover { color: #fff; }

/* =========================================================
   Reveal animations
========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
  transition-delay: calc(var(--d, 0) * 90ms);
}
.reveal.is-visible { opacity: 1; transform: none; }

.hero .reveal { transition-duration: 0.9s; }

/* =========================================================
   Responsive
========================================================= */
@media (max-width: 1024px) {
  .contact-layout { grid-template-columns: 1fr; gap: 3rem; }
  .hero-vertical { display: none; }
}

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-item { border-inline-end: none; }
  .activity-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --header-h: 64px; }
  .hamburger { display: block; }

  .nav {
    position: fixed;
    top: 0;
    bottom: 0;
    height: 100dvh;
    inset-inline-end: -100%;
    width: min(80vw, 320px);
    background: var(--surface);
    padding: calc(var(--header-h) + 2rem) 2rem 2rem;
    box-shadow: -20px 0 50px rgba(20, 18, 14, 0.12);
    transition: inset-inline-end 0.45s var(--ease);
    z-index: 1000;
    overflow-y: auto;
  }
  .nav.is-open { inset-inline-end: 0; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-list li { border-bottom: 1px solid var(--line); }
  .nav-link {
    display: block;
    padding-block: 1.1rem;
    font-size: 0.9rem;
    letter-spacing: 0.16em;
  }
  .nav-link::before { display: none; }
  .nav-link--cta {
    text-align: center;
    margin-top: 1.5rem;
    padding-block: 0.9rem;
  }
  .nav-list li:last-child { border-bottom: none; }

  .news-item {
    grid-template-columns: 1fr;
    gap: 0.65rem;
    padding-block: 1.35rem;
  }
  .news-item::before { inset-inline-start: calc(-1 * var(--gutter)); }
  .news-arrow { display: none; }

  .member { grid-template-columns: 72px 1fr; gap: 1.25rem; }
  .member-photo { width: 72px; height: 72px; }
  .member-photo::before { font-size: 1.8rem; }

  .footer-bottom-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .br-sp { display: inline; }
  .hero { min-height: 88vh; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .section-head { gap: 0.75rem; }
  .about-item { flex-direction: row; }
  .about-label { font-size: 1.2rem; }
}

@media (max-width: 360px) {
  .brand-jp { font-size: 0.95rem; }
  .activity-num { font-size: 2.8rem; }
}

/* =========================================================
   Reduced motion
========================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}