/* ============================================
   étoile — 男女混合バレーボールチーム
   Modern dark-navy + gold "star" theme v2
   ============================================ */

:root {
  --navy-900: #070b1f;
  --navy-800: #0b1130;
  --navy-700: #131a3f;
  --gold: #ffc857;
  --gold-light: #ffe29a;
  --line-green: #06c755;
  --white: #ffffff;
  --ink: #1c2333;
  --ink-soft: #5a637a;
  --bg-light: #f7f8fc;
  --radius: 18px;
  --shadow: 0 12px 40px rgba(7, 11, 31, 0.12);
  --font-jp: "Noto Sans JP", sans-serif;
  --font-en: "Montserrat", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: var(--font-jp);
  color: var(--ink);
  background: var(--white);
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; }
ul, ol { list-style: none; }

::selection { background: var(--gold); color: var(--navy-900); }

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: min(1120px, 92%);
  margin-inline: auto;
}
.container--narrow { width: min(820px, 92%); }

.pc-only { display: inline; }
@media (max-width: 768px) { .pc-only { display: none; } }

/* ============ Scroll progress bar ============ */
.progress {
  position: fixed;
  inset: 0 0 auto;
  height: 3px;
  z-index: 200;
  pointer-events: none;
}
.progress span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  box-shadow: 0 0 12px rgba(255, 200, 87, 0.7);
  transition: width 0.1s linear;
}

/* ============ Reveal animation ============ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible { opacity: 1; transform: none; }
.delay-1 { transition-delay: 0.12s; }
.delay-2 { transition-delay: 0.24s; }
.delay-3 { transition-delay: 0.36s; }
.delay-4 { transition-delay: 0.48s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__stars, .hero__stars::before, .hero__stars::after,
  .hero__aurora span, .hero__scroll span { animation: none !important; }
}

/* ============ Header ============ */
/* NOTE: すりガラス効果は .header 本体ではなく ::before に付ける。
   backdrop-filter を .header に直接付けると、fixed配置の .nav（モバイル
   全画面メニュー）の基準がヘッダーになり、スクロール後にメニュー背景が
   72pxに潰れるバグが起きるため。 */
.header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
}
.header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(7, 11, 31, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.header.is-scrolled::before { opacity: 1; }

.header__inner {
  width: min(1200px, 94%);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.header__logo {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: 0.04em;
  color: var(--white);
  text-decoration: none;
}
.header__logo-star { color: var(--gold); }

.nav__list {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav__list a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.2s;
  position: relative;
}
.nav__list a:not(.nav__cta)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.nav__list a:hover, .nav__list a.is-active { color: var(--gold); }
.nav__list a:hover::after, .nav__list a.is-active::after { transform: scaleX(1); }

.nav__cta {
  background: var(--line-green);
  color: #fff !important;
  padding: 9px 20px;
  border-radius: 999px;
  font-weight: 700;
  transition: opacity 0.2s, transform 0.2s;
}
.nav__cta:hover { opacity: 0.88; transform: translateY(-1px); }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  background: none;
  border: 0;
  cursor: pointer;
  z-index: 110;
}
.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  margin-inline: auto;
  background: var(--white);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

@media (max-width: 900px) {
  .hamburger { display: flex; }
  .nav {
    position: fixed;
    inset: 0;
    background:
      radial-gradient(ellipse 70% 50% at 50% 0%, rgba(64, 90, 255, 0.18), transparent),
      rgba(7, 11, 31, 0.97);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    display: grid;
    place-items: center;
    overscroll-behavior: contain;
  }
  .nav.is-open { opacity: 1; pointer-events: auto; }
  .nav__list { flex-direction: column; gap: 28px; }
  .nav__list a { font-size: 1.2rem; }
  .nav__list a:not(.nav__cta)::after { content: none; }
  .hamburger.is-open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .hamburger.is-open span:nth-child(2) { opacity: 0; }
  .hamburger.is-open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
}

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--white);
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(64, 90, 255, 0.25), transparent),
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(255, 200, 87, 0.12), transparent),
    linear-gradient(160deg, var(--navy-900), var(--navy-800) 55%, var(--navy-700));
  overflow: hidden;
}

/* aurora blobs */
/* NOTE: filter: blur() は使わない（巨大要素への常時ぼかしはGPU負荷が
   高く、低スペック環境でレンダリングが固まるため）。radial-gradientの
   減衰だけで柔らかい光を表現し、transformのみアニメーションする。 */
.hero__aurora { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.hero__aurora span {
  position: absolute;
  width: 60vmax;
  height: 60vmax;
  border-radius: 50%;
  will-change: transform;
  animation: drift 26s ease-in-out infinite alternate;
}
.hero__aurora span:nth-child(1) {
  background: radial-gradient(circle, rgba(72, 100, 255, 0.28) 0%, rgba(72, 100, 255, 0.12) 35%, transparent 65%);
  top: -22%;
  left: -14%;
}
.hero__aurora span:nth-child(2) {
  background: radial-gradient(circle, rgba(255, 200, 87, 0.16) 0%, rgba(255, 200, 87, 0.07) 35%, transparent 65%);
  bottom: -28%;
  right: -16%;
  animation-delay: -13s;
}
@keyframes drift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(7vmax, 5vmax) scale(1.12); }
}

/* starfield (generated dots) */
.hero__stars,
.hero__stars::before,
.hero__stars::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1.5px 1.5px at 12% 22%, #fff, transparent),
    radial-gradient(1px 1px at 28% 64%, rgba(255,255,255,0.9), transparent),
    radial-gradient(2px 2px at 41% 12%, var(--gold-light), transparent),
    radial-gradient(1px 1px at 55% 48%, #fff, transparent),
    radial-gradient(1.5px 1.5px at 68% 78%, rgba(255,255,255,0.8), transparent),
    radial-gradient(1px 1px at 75% 28%, #fff, transparent),
    radial-gradient(2px 2px at 88% 58%, var(--gold-light), transparent),
    radial-gradient(1px 1px at 94% 14%, #fff, transparent),
    radial-gradient(1.5px 1.5px at 6% 86%, rgba(255,255,255,0.7), transparent),
    radial-gradient(1px 1px at 48% 92%, #fff, transparent);
  animation: twinkle 5s ease-in-out infinite;
}
.hero__stars::before { transform: scale(1.6) rotate(40deg); animation-delay: 1.6s; opacity: 0.7; }
.hero__stars::after { transform: scale(2.2) rotate(80deg); animation-delay: 3.2s; opacity: 0.5; }

@keyframes twinkle {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.hero__inner { position: relative; z-index: 2; padding: 120px 6% 80px; }

.hero__badge {
  display: inline-block;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 8px 22px;
  border: 1px solid rgba(255, 200, 87, 0.6);
  border-radius: 999px;
  color: var(--gold-light);
  background: rgba(255, 200, 87, 0.08);
  margin-bottom: 28px;
}

.hero__title { line-height: 1.1; }
.hero__title-main {
  display: block;
  font-family: var(--font-en);
  font-size: clamp(4rem, 13vw, 8.5rem);
  font-weight: 800;
  letter-spacing: 0.02em;
  background: linear-gradient(120deg, #fff 30%, var(--gold) 75%, var(--gold-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  filter: drop-shadow(0 6px 30px rgba(255, 200, 87, 0.25));
}
.hero__title-sub {
  display: block;
  margin-top: 10px;
  font-size: clamp(0.95rem, 2.4vw, 1.25rem);
  font-weight: 700;
  letter-spacing: 0.55em;
  text-indent: 0.55em;
  color: rgba(255, 255, 255, 0.75);
}
.hero__title-en {
  display: block;
  margin-top: 18px;
  font-family: var(--font-en);
  font-size: clamp(0.68rem, 1.6vw, 0.8rem);
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: rgba(255, 200, 87, 0.75);
}
.hero__title-en::before, .hero__title-en::after {
  content: "———";
  letter-spacing: -0.1em;
  margin-inline: 14px;
  color: rgba(255, 255, 255, 0.25);
}
@media (max-width: 640px) {
  .hero__title-en::before, .hero__title-en::after { content: none; }
}

.hero__lead {
  margin: 30px auto 0;
  font-size: clamp(0.98rem, 2vw, 1.15rem);
  color: rgba(255, 255, 255, 0.85);
}

.hero__actions {
  margin-top: 44px;
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: rgba(255, 255, 255, 0.5);
  display: grid;
  justify-items: center;
  gap: 8px;
  z-index: 2;
}
.hero__scroll span {
  width: 1px;
  height: 44px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scrollline 2s ease-in-out infinite;
  transform-origin: top;
}
@keyframes scrollline {
  0% { transform: scaleY(0); }
  50% { transform: scaleY(1); }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============ Buttons ============ */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 34px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
  overflow: hidden;
}
.btn::after {
  content: "";
  position: absolute;
  top: 0;
  left: -80%;
  width: 50%;
  height: 100%;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: skewX(-20deg);
  transition: left 0.5s ease;
}
.btn:hover::after { left: 130%; }
.btn:hover { transform: translateY(-2px); }
.btn--line {
  background: var(--line-green);
  color: #fff;
  box-shadow: 0 8px 28px rgba(6, 199, 85, 0.35);
}
.btn--line:hover { box-shadow: 0 12px 34px rgba(6, 199, 85, 0.45); }
.btn--ghost {
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: var(--white);
}
.btn--ghost:hover { border-color: var(--gold); color: var(--gold-light); }
.btn--large { padding: 18px 44px; font-size: 1.08rem; }

/* ============ Sections ============ */
.section { padding: 110px 0; }
.section--dark {
  background:
    radial-gradient(ellipse 70% 50% at 85% 8%, rgba(64, 90, 255, 0.15), transparent),
    linear-gradient(180deg, var(--navy-900), var(--navy-800));
  color: var(--white);
}

.section__label {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold);
}
.section__label::before { content: "✦ "; }

.section__title {
  font-size: clamp(1.7rem, 4.2vw, 2.5rem);
  font-weight: 900;
  letter-spacing: 0.04em;
  margin: 8px 0 48px;
  position: relative;
  padding-bottom: 18px;
}
.section__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
}
.section__desc { margin: -28px 0 36px; color: var(--ink-soft); }
.section--dark .section__desc { color: rgba(255, 255, 255, 0.7); }

/* ============ About ============ */
.about {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 56px;
  align-items: center;
}
.about__catch {
  font-size: clamp(1.25rem, 2.6vw, 1.6rem);
  font-weight: 900;
  line-height: 1.6;
  margin-bottom: 22px;
}
.about__text > p:not(.about__catch) { color: var(--ink-soft); }
.about__text p + p { margin-top: 14px; }

.about__stats {
  margin-top: 36px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.about__stats li {
  flex: 1 1 130px;
  background: var(--bg-light);
  border: 1px solid #e8ebf4;
  border-radius: var(--radius);
  padding: 18px 14px;
  text-align: center;
  display: grid;
  gap: 2px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.about__stats li:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.about__stats strong {
  font-family: var(--font-en);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--navy-800);
}
.about__stats span { font-size: 0.78rem; color: var(--ink-soft); }

.about__image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  position: relative;
}
.about__image::before {
  content: "✦";
  position: absolute;
  top: -14px;
  right: 18px;
  font-size: 2rem;
  color: var(--gold);
  z-index: 2;
  filter: drop-shadow(0 2px 8px rgba(255, 200, 87, 0.6));
}
.about__image::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  border: 1px solid rgba(7, 11, 31, 0.08);
  pointer-events: none;
}
.about__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4/3;
  transition: transform 0.6s ease;
}
.about__image:hover img { transform: scale(1.04); }

@media (max-width: 860px) {
  .about { grid-template-columns: 1fr; gap: 36px; }
  .about__image { order: -1; }
}

/* ============ Cards (募集要項) ============ */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.card {
  position: relative;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 34px 28px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), transparent 70%);
  opacity: 0;
  transition: opacity 0.25s;
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 200, 87, 0.5);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.35);
}
.card:hover::before { opacity: 1; }
.card__icon { font-size: 2rem; margin-bottom: 14px; }
.card h3 { font-size: 1.15rem; margin-bottom: 10px; color: var(--gold-light); }
.card p { font-size: 0.92rem; color: rgba(255, 255, 255, 0.78); }

.join__note {
  margin-top: 22px;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.55);
}

@media (max-width: 860px) {
  .cards { grid-template-columns: 1fr; }
}

/* ============ Pricing ============ */
.pricing {
  margin-top: 60px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.pricing__item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 30px 22px;
  text-align: center;
  display: grid;
  gap: 6px;
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.pricing__item:hover { transform: translateY(-4px); border-color: rgba(255, 200, 87, 0.4); }
.pricing__item--accent {
  border-color: rgba(255, 200, 87, 0.55);
  background:
    radial-gradient(ellipse 100% 60% at 50% 0%, rgba(255, 200, 87, 0.14), transparent),
    rgba(255, 200, 87, 0.05);
}
.pricing__label { font-size: 0.88rem; font-weight: 700; color: rgba(255, 255, 255, 0.7); }
.pricing__value {
  font-family: var(--font-en);
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--gold-light);
  line-height: 1.2;
}
.pricing__value small { font-size: 1rem; font-weight: 700; }
.pricing__note { font-size: 0.78rem; color: rgba(255, 255, 255, 0.55); }

@media (max-width: 860px) {
  .pricing { grid-template-columns: 1fr; }
}

/* ============ Steps ============ */
.steps { margin-top: 70px; }
.steps__title {
  text-align: center;
  font-size: 1.4rem;
  margin-bottom: 40px;
  color: var(--white);
}
.steps__list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.steps__list li {
  position: relative;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 34px 26px 28px;
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.steps__list li:hover { transform: translateY(-4px); border-color: rgba(255, 200, 87, 0.4); }
.steps__list li:not(:last-child)::after {
  content: "→";
  position: absolute;
  top: 50%;
  right: -19px;
  transform: translateY(-50%);
  color: var(--gold);
  font-size: 1.1rem;
  z-index: 2;
}
.steps__num {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  color: var(--gold);
}
.steps__num::before { content: "STEP "; font-size: 0.7rem; }
.steps__list h4 { margin: 8px 0 8px; font-size: 1.08rem; color: var(--white); }
.steps__list p { font-size: 0.9rem; color: rgba(255, 255, 255, 0.75); }
.steps__cta { margin-top: 44px; text-align: center; }

@media (max-width: 860px) {
  .steps__list { grid-template-columns: 1fr; }
  .steps__list li:not(:last-child)::after {
    content: "↓";
    top: auto;
    bottom: -21px;
    right: 50%;
    transform: translateX(50%);
  }
}

/* ============ Calendar ============ */
.calendar {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid #e8ebf4;
  background: #fff;
}
.calendar iframe {
  width: 100%;
  height: 600px;
  border: 0;
  display: block;
}
@media (max-width: 640px) {
  .calendar iframe { height: 480px; }
}

/* ============ Events ============ */
.events { margin-top: 70px; }
.events__title { font-size: 1.4rem; margin-bottom: 32px; }
.events__timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.events__item {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--bg-light);
  border: 1px solid #e8ebf4;
  border-radius: var(--radius);
  padding: 22px 26px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.events__item:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.events__month {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--navy-800);
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  border-radius: 12px;
  padding: 8px 14px;
  white-space: nowrap;
}
.events__name { font-weight: 700; font-size: 1.02rem; }

@media (max-width: 860px) {
  .events__timeline { grid-template-columns: 1fr; }
}

/* ============ Access ============ */
.access {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.access__card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.access__card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 200, 87, 0.5);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.35);
}
.access__map iframe {
  width: 100%;
  height: 210px;
  border: 0;
  display: block;
  filter: saturate(0.9);
}
.access__body { padding: 22px 24px 26px; }
.access__body h3 { font-size: 1.15rem; color: var(--gold-light); margin-bottom: 6px; }
.access__address { font-size: 0.88rem; color: rgba(255, 255, 255, 0.75); }
.access__station { font-size: 0.85rem; color: rgba(255, 255, 255, 0.6); margin-top: 6px; }

@media (max-width: 960px) {
  .access { grid-template-columns: 1fr; }
}

/* ============ FAQ ============ */
.faq { display: grid; gap: 14px; }
.faq__item {
  background: var(--bg-light);
  border: 1px solid #e8ebf4;
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.faq__item:hover { box-shadow: var(--shadow); }
.faq__item[open] { border-color: var(--gold); }
.faq__item summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  padding: 20px 60px 20px 24px;
  position: relative;
}
.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: 18px;
  top: 50%;
  transform: translateY(-50%);
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid #d8dcea;
  font-family: var(--font-en);
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1;
  color: var(--ink-soft);
  transition: transform 0.25s, background 0.25s, color 0.25s, border-color 0.25s;
}
.faq__item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
  background: var(--gold);
  border-color: var(--gold);
  color: var(--navy-900);
}
.faq__item p {
  padding: 0 24px 22px 24px;
  color: var(--ink-soft);
  font-size: 0.95rem;
}
.faq__item p::before {
  content: "A.";
  font-family: var(--font-en);
  font-weight: 800;
  color: var(--navy-700);
  margin-right: 12px;
}
.faq__more { margin-top: 30px; text-align: center; color: var(--ink-soft); }
.faq__more a { color: var(--line-green); font-weight: 700; }

/* ============ CTA section ============ */
.section--cta {
  position: relative;
  text-align: center;
  color: var(--white);
  background:
    radial-gradient(ellipse 70% 60% at 50% 0%, rgba(64, 90, 255, 0.3), transparent),
    linear-gradient(180deg, var(--navy-800), var(--navy-900));
  overflow: hidden;
}
.section--cta .container { position: relative; z-index: 2; }
.cta__title {
  font-size: clamp(1.6rem, 4vw, 2.3rem);
  font-weight: 900;
  background: linear-gradient(120deg, #fff 40%, var(--gold-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.cta__desc { margin: 16px 0 36px; color: rgba(255, 255, 255, 0.8); }

.sns { margin-top: 64px; }
.sns__lead { font-size: 0.92rem; color: rgba(255, 255, 255, 0.65); margin-bottom: 18px; }
.sns__links { display: flex; justify-content: center; gap: 18px; }
.sns__links a {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--white);
  transition: border-color 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.sns__links a:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(255, 200, 87, 0.2);
}

/* ============ Footer ============ */
.footer {
  background: var(--navy-900);
  color: rgba(255, 255, 255, 0.6);
  padding: 48px 0 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.footer__inner { text-align: center; display: grid; gap: 18px; justify-items: center; }
.footer__mascot {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(255, 200, 87, 0.5);
  background: #fff;
}
.footer__logo {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--white);
}
.footer__nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 26px;
}
.footer__nav a {
  font-size: 0.85rem;
  text-decoration: none;
  transition: color 0.2s;
}
.footer__nav a:hover { color: var(--gold); }
.footer__copy { font-size: 0.75rem; color: rgba(255, 255, 255, 0.35); }
@media (max-width: 640px) {
  .footer { padding-bottom: 92px; }
}

/* ============ Back to top ============ */
.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(255, 200, 87, 0.5);
  background: rgba(7, 11, 31, 0.85);
  color: var(--gold);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 0.3s, transform 0.3s, background 0.2s;
}
.to-top.is-visible { opacity: 1; pointer-events: auto; transform: none; }
.to-top:hover { background: var(--navy-700); }

/* ============ Terms page ============ */
.terms-hero {
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(64, 90, 255, 0.25), transparent),
    linear-gradient(160deg, var(--navy-900), var(--navy-800));
  color: var(--white);
  padding: 160px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.terms-hero .container { position: relative; z-index: 2; }
.terms-hero h1 { font-size: clamp(1.8rem, 4.5vw, 2.6rem); font-weight: 900; }
.terms-hero p {
  font-family: var(--font-en);
  letter-spacing: 0.3em;
  color: var(--gold);
  font-size: 0.85rem;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.terms-body { padding: 80px 0 110px; }
.terms-article { display: grid; gap: 36px; }
.terms-article section {
  background: var(--bg-light);
  border: 1px solid #e8ebf4;
  border-radius: var(--radius);
  padding: 30px 34px;
}
.terms-article h2 {
  font-size: 1.05rem;
  color: var(--navy-700);
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--gold);
  display: inline-block;
}
.terms-article p, .terms-article li { font-size: 0.95rem; color: var(--ink); }
.terms-article ol { list-style: none; display: grid; gap: 6px; margin-top: 6px; }
.terms-back { text-align: center; margin-top: 64px; }
.terms-back .btn {
  background: var(--navy-800);
  color: #fff;
  box-shadow: var(--shadow);
}