/* =========================================================
   VISION Landing Page
   Palette: deep navy × gold (エンブレム準拠)
   ========================================================= */
:root {
  --navy: #0c2244;
  --navy-deep: #081830;
  --navy-light: #16335f;
  --gold: #c9a14a;
  --gold-light: #e8c87a;
  --blue: #1c7ed6;
  --ink: #1d2733;
  --gray: #5c6b7a;
  --bg: #ffffff;
  --bg-gray: #f4f6f9;
  --radius: 14px;
  --shadow: 0 8px 30px rgba(8, 24, 48, 0.10);
  --font-sans: "Noto Sans JP", sans-serif;
  --font-serif: "Shippori Mincho B1", serif;
  --font-en: "Montserrat", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  touch-action: pan-y pinch-zoom;
}
img { max-width: 100%; display: block; }
a { color: var(--blue); }

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

.text-link {
  color: var(--blue);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}
.text-link:hover { opacity: 0.7; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.9em 2.4em;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  border: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn--gold {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: var(--navy-deep);
  box-shadow: 0 6px 20px rgba(201, 161, 74, 0.4);
}
.btn--ghost {
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  color: #fff;
  background: transparent;
}
.btn--ghost:hover { background: rgba(255, 255, 255, 0.12); }
.btn--full { width: 100%; font-size: 1.05rem; }
.btn--text {
  background: none;
  color: var(--blue);
  padding: 0.4em 0;
  font-size: 0.95rem;
  border-bottom: 1px solid currentColor;
  border-radius: 0;
}
.btn--text:hover { transform: none; opacity: 0.7; }
.btn[disabled] { opacity: 0.5; cursor: wait; transform: none; }

/* ---------- Header ---------- */
.header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  background: rgba(8, 24, 48, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background 0.3s ease;
}
.header__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.header__logo { height: 42px; width: auto; }
.header__name {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.12em;
  color: #fff;
}
.nav { display: flex; align-items: center; gap: 26px; }
.nav__link {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav__link:hover { color: var(--gold-light); }
.nav__link--cta {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: var(--navy-deep);
  font-weight: 700;
  padding: 0.5em 1.4em;
  border-radius: 999px;
}
.nav__link--cta:hover { color: var(--navy-deep); opacity: 0.85; }
.nav-toggle { display: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  overflow: hidden;
  background: var(--navy-deep);
}
.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(28, 126, 214, 0.35), transparent 60%),
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(201, 161, 74, 0.18), transparent 60%),
    linear-gradient(160deg, var(--navy-deep) 0%, var(--navy) 55%, var(--navy-light) 100%);
}
.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(to bottom, transparent, #000 40%);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 40%);
}
.hero__inner {
  position: relative;
  z-index: 1;
  padding: 110px 20px 80px;
  max-width: 820px;
}
.hero__emblem {
  width: 110px;
  margin: 0 auto 22px;
  filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.45));
  animation: float 5s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.hero__eyebrow {
  font-family: var(--font-en);
  font-weight: 600;
  letter-spacing: 0.35em;
  font-size: 0.78rem;
  color: var(--gold-light);
  margin-bottom: 14px;
}
.hero__title {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(1.7rem, 4.6vw, 3.2rem);
  line-height: 1.45;
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}
.hero__title-accent {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__lead {
  font-size: clamp(0.95rem, 1.8vw, 1.1rem);
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 34px;
}
.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 34px;
}
.hero__sns {
  display: flex;
  gap: 18px;
  justify-content: center;
}
.hero__sns a {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.25);
  transition: all 0.25s ease;
}
.hero__sns a:hover {
  color: var(--navy-deep);
  background: var(--gold-light);
  border-color: var(--gold-light);
  transform: translateY(-3px);
}
.hero__sns svg { width: 20px; height: 20px; }
.hero__scroll {
  position: absolute;
  bottom: 26px;
  left: calc(50% - 13px);
  width: 26px;
  height: 44px;
  border: 1.5px solid rgba(255, 255, 255, 0.5);
  border-radius: 999px;
  z-index: 1;
  overflow: hidden;
  contain: strict;
}
.hero__scroll span {
  position: absolute;
  top: 10px;
  left: 50%;
  width: 4px;
  height: 8px;
  margin-left: -2px;
  border-radius: 2px;
  background: var(--gold-light);
}
/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section--gray { background: var(--bg-gray); }
.section--dark {
  background:
    radial-gradient(ellipse 70% 50% at 80% 10%, rgba(28, 126, 214, 0.25), transparent 60%),
    linear-gradient(160deg, var(--navy-deep), var(--navy));
  color: #fff;
}
.section__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}
.section__inner--narrow { max-width: 760px; }
.section__eyebrow {
  font-family: var(--font-en);
  font-weight: 600;
  letter-spacing: 0.3em;
  font-size: 0.78rem;
  color: var(--blue);
  text-align: center;
  margin-bottom: 8px;
}
.section__eyebrow--gold { color: var(--gold-light); }
.section__title {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(1.6rem, 3.4vw, 2.3rem);
  text-align: center;
  letter-spacing: 0.05em;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 18px;
}
.section__title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 54px;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--gold-light), var(--gold));
}
.section__title--light { color: #fff; }
.section__desc {
  text-align: center;
  color: var(--gray);
  margin-bottom: 44px;
}
.section__desc--light { color: rgba(255, 255, 255, 0.8); }

/* ---------- About ---------- */
.about {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: start;
  margin-top: 40px;
}
.about__catch {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 1.35rem;
  line-height: 1.7;
  color: var(--navy);
  margin-bottom: 18px;
}
.about__text p { margin-bottom: 14px; }
.about__more { animation: fadeIn 0.4s ease; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.about__nics {
  display: flex;
  gap: 18px;
  align-items: center;
  background: var(--bg-gray);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-top: 6px;
}
.about__nics img { width: 90px; flex-shrink: 0; }
.about__nics p { font-size: 0.9rem; margin: 0; color: var(--gray); }
.about__photo {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.about__photo img { width: 100%; }
.about__photo figcaption {
  font-size: 0.82rem;
  color: var(--gray);
  text-align: center;
  padding: 10px;
  background: #fff;
}
.about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 56px;
}
.stat {
  text-align: center;
  background: var(--bg-gray);
  border-radius: var(--radius);
  padding: 26px 12px;
}
.stat__num {
  display: block;
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 2rem;
  color: var(--navy);
}
.stat__num small { font-size: 1rem; }
.stat__label { font-size: 0.85rem; color: var(--gray); }

/* ---------- Mission ---------- */
.mission { text-align: center; margin-top: 36px; }
.mission__lead {
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  line-height: 2.1;
  margin-bottom: 16px;
}
.mission__lead strong { color: var(--gold-light); }
.mission__body {
  color: rgba(255, 255, 255, 0.8);
  max-width: 640px;
  margin: 0 auto 52px;
}
.mission__values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.value-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 34px 24px;
  backdrop-filter: blur(4px);
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.value-card:hover {
  transform: translateY(-5px);
  border-color: rgba(201, 161, 74, 0.5);
}
.value-card__icon { font-size: 2.2rem; margin-bottom: 12px; }
.value-card h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--gold-light);
  margin-bottom: 10px;
  letter-spacing: 0.1em;
}
.value-card p { font-size: 0.9rem; color: rgba(255, 255, 255, 0.8); }

/* ---------- Activities ---------- */
.activities {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.activity-card {
  background: #fff;
  border: 1px solid #e6ebf2;
  border-radius: var(--radius);
  padding: 38px 28px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease;
  position: relative;
  overflow: hidden;
}
.activity-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: linear-gradient(90deg, var(--blue), var(--gold));
}
.activity-card:hover { transform: translateY(-6px); }
.activity-card__icon { font-size: 2.6rem; margin-bottom: 14px; }
.activity-card h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--navy);
  margin-bottom: 12px;
}
.activity-card p { font-size: 0.92rem; color: var(--gray); text-align: left; }

/* ---------- Gallery ---------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.gallery__item {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  box-shadow: var(--shadow);
  background: #fff;
}
.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.gallery__item:hover img { transform: scale(1.06); }
.gallery__item--placeholder {
  display: grid;
  place-items: center;
  background: repeating-linear-gradient(45deg, #eef1f6, #eef1f6 12px, #f6f8fb 12px, #f6f8fb 24px);
  border: 1.5px dashed #c8d2de;
  box-shadow: none;
  text-align: center;
  color: var(--gray);
  font-size: 0.9rem;
  line-height: 1.6;
}
.gallery__item--placeholder small { font-size: 0.75rem; }
.gallery__item iframe { width: 100%; height: 100%; border: 0; }
.gallery__note { text-align: center; margin-top: 28px; color: var(--gray); font-size: 0.92rem; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 14px; }
.faq__item {
  background: #fff;
  border: 1px solid #e6ebf2;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.faq__item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 56px 20px 24px;
  font-weight: 700;
  color: var(--navy);
  position: relative;
  transition: background 0.2s;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::before {
  content: "Q";
  font-family: var(--font-en);
  font-weight: 800;
  color: var(--gold);
  margin-right: 12px;
}
.faq__item summary::after {
  content: "+";
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--gold);
  transition: transform 0.25s ease;
}
.faq__item[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq__item summary:hover { background: var(--bg-gray); }
.faq__item p {
  padding: 0 24px 20px 52px;
  color: var(--gray);
  font-size: 0.95rem;
}

/* ---------- Contact ---------- */
.contact__sns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 36px;
}
.sns-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 12px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  color: #fff;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.sns-btn:hover { transform: translateY(-3px); opacity: 0.92; }
.sns-btn svg { width: 22px; height: 22px; flex-shrink: 0; }
.sns-btn--x { background: #000; border: 1px solid rgba(255,255,255,0.25); }
.sns-btn--ig { background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888); }
.sns-btn--line { background: #06c755; }
.contact__divider {
  text-align: center;
  position: relative;
  margin-bottom: 32px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.88rem;
}
.contact__divider::before,
.contact__divider::after {
  content: "";
  position: absolute;
  top: 50%;
  width: calc(50% - 90px);
  height: 1px;
  background: rgba(255, 255, 255, 0.2);
}
.contact__divider::before { left: 0; }
.contact__divider::after { right: 0; }

.contact-form { display: grid; gap: 20px; }
.contact-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.contact-form__field { display: grid; gap: 8px; }
.contact-form__field label {
  font-size: 0.9rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
}
.req {
  display: inline-block;
  background: var(--gold);
  color: var(--navy-deep);
  font-size: 0.68rem;
  font-weight: 700;
  border-radius: 4px;
  padding: 1px 7px;
  margin-left: 6px;
  vertical-align: 2px;
}
.contact-form__field input,
.contact-form__field select,
.contact-form__field textarea {
  width: 100%;
  padding: 13px 16px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s, background 0.2s;
}
.contact-form__field input::placeholder,
.contact-form__field textarea::placeholder { color: rgba(255, 255, 255, 0.35); }
.contact-form__field input:focus,
.contact-form__field select:focus,
.contact-form__field textarea:focus {
  outline: none;
  border-color: var(--gold-light);
  background: rgba(255, 255, 255, 0.12);
}
.contact-form__field select option { color: var(--ink); }
.contact-form__status {
  text-align: center;
  font-size: 0.95rem;
  font-weight: 700;
  min-height: 1.5em;
}
.contact-form__status.is-success { color: #7be3a0; }
.contact-form__status.is-error { color: #ff9d9d; }

/* ---------- Footer ---------- */
.footer {
  background: var(--navy-deep);
  color: rgba(255, 255, 255, 0.75);
  text-align: center;
  padding: 56px 20px 36px;
}
.footer__logo { width: 64px; margin: 0 auto 12px; }
.footer__name {
  font-family: var(--font-en);
  font-weight: 800;
  letter-spacing: 0.15em;
  font-size: 1.2rem;
  color: #fff;
}
.footer__tag { font-size: 0.85rem; margin: 6px 0 22px; }
.footer__sns {
  display: flex;
  gap: 22px;
  justify-content: center;
  margin-bottom: 26px;
  flex-wrap: wrap;
}
.footer__sns a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-size: 0.88rem;
  font-family: var(--font-en);
  font-weight: 600;
  letter-spacing: 0.05em;
}
.footer__sns a:hover { color: var(--gold-light); }
.footer__copy { font-size: 0.78rem; color: rgba(255, 255, 255, 0.4); }

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 860px) {
  html { scroll-padding-top: 0; }

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

  .header {
    position: relative;
    inset: auto;
    background: rgba(8, 24, 48, 0.97);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    transition: none;
  }

  .nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(8, 24, 48, 0.97);
    padding: 12px 24px 24px;
    transform: translateY(-130%);
    transition: transform 0.3s ease;
  }
  .nav.is-open { transform: translateY(0); }
  .nav__link { padding: 14px 4px; font-size: 1rem; border-bottom: 1px solid rgba(255,255,255,0.08); }
  .nav__link--cta { margin-top: 16px; text-align: center; border-bottom: none; }
  .nav-toggle {
    display: grid;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
  }
  .nav-toggle span {
    width: 24px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .hero__emblem {
    filter: none;
  }

  .hero {
    min-height: calc(100svh - 64px);
    background: linear-gradient(160deg, var(--navy-deep) 0%, var(--navy) 58%, var(--navy-light) 100%);
  }

  .hero__bg {
    display: none;
  }

  .hero__emblem {
    animation: none;
  }

  .hero__scroll {
    bottom: 18px;
    transform: none;
    background: rgba(255, 255, 255, 0.08);
  }

  .hero__actions .btn,
  .hero__scroll,
  .hero__sns a {
    transition: none;
  }

  .hero__actions .btn:hover,
  .hero__scroll:hover,
  .hero__sns a:hover {
    transform: none;
  }

  .hero__actions .btn--gold {
    box-shadow: none;
  }

  .value-card {
    backdrop-filter: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .section { padding: 68px 0; }
  .about { grid-template-columns: 1fr; gap: 32px; }
  .about__photo { max-width: 440px; margin: 0 auto; }
  .about__stats { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .stat { padding: 18px 8px; }
  .stat__num { font-size: 1.5rem; }
  .stat__label { font-size: 0.72rem; }
  .mission__values { grid-template-columns: 1fr; }
  .activities { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .contact__sns { grid-template-columns: 1fr; }
  .contact-form__row { grid-template-columns: 1fr; }
  .contact__divider::before,
  .contact__divider::after { width: calc(50% - 100px); }
}

@media (max-width: 480px) {
  .gallery { grid-template-columns: 1fr; }
  .hero__actions { flex-direction: column; align-items: stretch; padding: 0 16px; }
  .about__nics { flex-direction: column; text-align: center; }
}

@media (hover: none) and (pointer: coarse) {
  .btn,
  .hero__scroll,
  .hero__sns a,
  .nav__link,
  .activity-card,
  .gallery__item img,
  .sns-btn {
    transition: none;
  }

  .btn:hover,
  .hero__scroll:hover,
  .hero__sns a:hover,
  .activity-card:hover,
  .gallery__item:hover img,
  .sns-btn:hover {
    transform: none;
  }
}