:root {
  --orange: #E8720C;
  --orange-light: #F5A623;
  --orange-pale: #FFF3E8;
  --orange-mid: #FDEBD0;
  --brown-dark: #2C1A0E;
  --brown-mid: #7A4E2D;
  --brown-light: #A67C52;
  --cream: #FFFAF5;
  --cream-dark: #F7EFE5;
  --white: #FFFFFF;
  --text-dark: #1C0F00;
  --text-mid: #5C3D1E;
  --text-light: #9C7B5E;
  --green: #27AE60;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Zen Kaku Gothic New', sans-serif;
  background: var(--cream);
  color: var(--text-dark);
  overflow-x: hidden;
}

.br-sp {
  display: none;
}

.accordion-icon {
  display: none;
}

/* ========== HERO ========== */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: 2rem 2rem 3rem;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(to right,
      var(--brown-dark) 0%,
      var(--brown-dark) 50%,
      rgba(44, 26, 14, 0.7) 80%,
      rgba(44, 26, 14, 0) 95%),
    url('./img/top.jpg') center right / cover no-repeat;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 114, 12, 0.2) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: 'mogu+';
  position: absolute;
  bottom: -80px;
  right: -20px;
  font-family: 'DM Serif Display', serif;
  font-size: 300px;
  color: rgba(255, 255, 255, 0.03);
  pointer-events: none;
  white-space: nowrap;
}

/* ========== NAV ========== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: rgba(44, 26, 14, 0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 0 2rem;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo-icon {
  height: 36px;
  width: auto;
  object-fit: contain;
}

.nav-logo-text {
  height: 24px;
  width: auto;
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--orange-light);
}

.nav-btn {
  padding: 0.6rem 1.4rem !important;
  font-size: 0.82rem !important;
  flex-shrink: 0;
}

/* ========== HERO CONTENT ========== */
.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 4rem 0 4rem;
  padding-top: 6rem;
  position: relative;
  z-index: 10;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(232, 114, 12, 0.2);
  color: var(--orange-light);
  font-size: 0.75rem;
  font-family: 'Space Mono', monospace;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 2rem;
  letter-spacing: 0.1em;
  border: 1px solid rgba(232, 114, 12, 0.35);
  animation: fadeInUp 0.6s ease both;
}

.hero-title {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(3rem, 6vw, 5rem);
  color: white;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.6s ease 0.1s both;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.85;
  margin-bottom: 3rem;
  max-width: 520px;
  animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-btns {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease 0.3s both;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--orange);
  color: white;
  text-decoration: none;
  padding: 0.9rem 2.2rem;
  border-radius: 100px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 10px rgba(232, 114, 12, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(232, 114, 12, 0.5);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: white;
  text-decoration: none;
  padding: 0.9rem 2.2rem;
  border-radius: 100px;
  font-weight: 700;
  font-size: 0.95rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: background 0.2s;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* ========== HERO STATS ========== */
.hero-stats {
  display: flex;
  gap: 3rem;
  position: relative;
  z-index: 10;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  animation: fadeInUp 0.6s ease 0.4s both;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.stat-item {
  text-align: left;
}

.stat-num {
  font-family: 'DM Serif Display', serif;
  font-size: 2.2rem;
  color: white;
  line-height: 1;
}

.stat-label {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.38);
  margin-top: 0.3rem;
  letter-spacing: 0.05em;
}

/* ========== SHARED LAYOUT ========== */
.container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  color: var(--orange);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}

.section-title {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  line-height: 1.25;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
}

.section-desc {
  font-size: 1rem;
  color: var(--text-mid);
  line-height: 1.8;
  margin-bottom: 0;
  /* max-width: 560px; */
}

/* ========== ICONS (Lucide) ========== */

/* --- ボタン内（ナビ・ヒーロー・CTA） --- */
.btn-primary svg,
.btn-secondary svg,
.btn-white svg,
.btn-outline-white svg {
  width: 16px;
  height: 16px;
}

.nav-btn svg {
  width: 14px;
  height: 14px;
}

/* --- 機能紹介カード --- */
.fi-img svg {
  width: 35px;
  height: 35px;
}

.fi-img--crud {
  background: #FFF0E0;
  color: var(--orange);
}

.fi-img--url {
  background: #ffe0e0;
  color: #e83b3b;
}

.fi-img--search {
  background: #E8F5FF;
  color: #2980B9;
}

.fi-img--tag {
  background: #F0F8E8;
  color: #27AE60;
}

.fi-img--memo {
  background: #FFF8E0;
  color: #E6A817;
}

.fi-img--image {
  background: #F0E8FF;
  color: #8E44AD;
}

.fi-img--auth {
  background: #E8FFF2;
  color: #16A085;
}

/* --- 使い方カード --- */
.why-icon svg {
  width: 26px;
  height: 26px;
}

/* --- 技術スタックカード --- */
.tech-icon svg {
  width: 30px;
  height: 30px;
}

/* ========== ABOUT ========== */
.about {
  background: var(--cream-dark);
  padding: 8rem 2rem;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: center;
}

.about-text p {
  font-size: 1rem;
  line-height: 1.95;
  color: var(--text-mid);
  margin-bottom: 1.4rem;
}

.about-text strong {
  color: var(--text-dark);
}

.about-phone {
  display: flex;
  justify-content: center;
  align-items: center;
}

.mockup-img {
  width: 100%;
  max-width: 420px;
  height: auto;
  /* box-shadow: 0 30px 80px rgba(44, 26, 14, 0.2); */
  filter: drop-shadow(0 30px 80px rgba(44, 26, 14, 0.2));
  display: block;
}

/* ========== FEATURES INTRO ========== */
.features-intro {
  background: var(--white);
  padding: 8rem 2rem;
}

.features-intro .section-title {
  margin-bottom: 0.6rem;
}

.features-intro .section-desc {
  margin-bottom: 3.5rem;
}

.fi-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 3.5rem;
}

.fi-card {
  display: flex;
  gap: 1.6rem;
  align-items: flex-start;
  background: var(--cream);
  border-radius: 20px;
  padding: 2rem 2rem;
  border: 1px solid rgba(232, 114, 12, 0.1);
}

.fi-img {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.fi-body {
  flex: 1;
}

.fi-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.6rem;
  line-height: 1.4;
}

.fi-desc {
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--text-mid);
  margin-bottom: 0.9rem;
}

.fi-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.fi-tag {
  display: inline-block;
  background: var(--orange-pale);
  color: var(--orange);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 100px;
  font-family: 'Space Mono', monospace;
}

/* ========== HOW TO USE ========== */
.why {
  background: var(--cream-dark);
  padding: 8rem 2rem;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
}

.why-card {
  background: var(--white);
  border-radius: 20px;
  padding: 2.2rem 2rem;
  border: 1px solid rgba(232, 114, 12, 0.1);
}

.why-icon {
  width: 48px;
  height: 48px;
  background: var(--orange-pale);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  margin-bottom: 1.2rem;
}

.why-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.7rem;
  color: var(--text-dark);
}

.why-card p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-mid);
}

/* ========== TECH ========== */
.tech {
  background: var(--brown-dark);
  padding: 8rem 2rem;
}

.tech h2 {
  color: white;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
}

.tech-card {
  background: var(--white);
  border-radius: 18px;
  padding: 2rem 1.5rem;
  text-align: center;
  border: 1px solid rgba(232, 114, 12, 0.1);
}

.tech-icon {
  width: 56px;
  height: 56px;
  background: var(--orange-pale);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  margin: 0 auto 1rem;
}

.tech-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-dark);
  margin-bottom: 0.3rem;
}

.tech-role {
  font-size: 0.78rem;
  color: var(--text-light);
}

/* ========== STRUGGLES ========== */
.struggles {
  background: var(--white);
  padding: 8rem 2rem;
}

.struggles-list {
  margin-top: 3.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.struggle-item {
  background: var(--cream);
  border-radius: 20px;
  padding: 2.5rem;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2.5rem;
  align-items: start;
  border-left: 4px solid var(--orange);
}

.struggle-num {
  font-family: 'DM Serif Display', serif;
  font-size: 3rem;
  color: var(--orange);
  line-height: 1;
  opacity: 0.55;
}

.struggle-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  color: var(--text-dark);
}

.struggle-content p {
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--text-mid);
}

.struggle-tag {
  display: inline-block;
  background: var(--orange);
  color: white;
  font-size: 0.68rem;
  font-family: 'Space Mono', monospace;
  padding: 0.2rem 0.8rem;
  border-radius: 100px;
  margin-bottom: 0.8rem;
}

/* .struggle-resolved {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(39, 174, 96, 0.1);
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.3rem 0.9rem;
  border-radius: 100px;
  margin-top: 1rem;
} */

/* ========== FUTURE ========== */
.future {
  background: var(--cream-dark);
  padding: 8rem 2rem;
}

.future-list {
  margin-top: 3.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.future-item {
  background: var(--white);
  border-radius: 20px;
  padding: 2.5rem;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2.5rem;
  align-items: start;
  border-left: 4px solid var(--orange-light);
  position: relative;
  overflow: hidden;
}

.future-item::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 160px;
  height: 160px;
  background: radial-gradient(circle at top right, rgba(232, 114, 12, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.future-num {
  font-family: 'DM Serif Display', serif;
  font-size: 3rem;
  color: var(--orange-light);
  line-height: 1;
  opacity: 0.5;
}

.future-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-family: 'Space Mono', monospace;
  padding: 0.2rem 0.8rem;
  border-radius: 100px;
  margin-bottom: 0.8rem;
  font-weight: 700;
}

.future-badge--api {
  background: rgba(142, 68, 173, 0.12);
  color: #8E44AD;
}

.future-badge--save {
  background: rgba(39, 174, 96, 0.12);
  color: #1E8449;
}

.future-badge--calendar {
  background: rgba(41, 128, 185, 0.12);
  color: #2471A3;
}

.future-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  color: var(--text-dark);
}

.future-content p {
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--text-mid);
  margin-bottom: 1rem;
}

.future-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.future-tag {
  display: inline-block;
  background: var(--orange-mid);
  color: var(--brown-mid);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 100px;
  font-family: 'Space Mono', monospace;
}

/* ========== CTA ========== */
.cta {
  background: var(--orange);
  padding: 8rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  pointer-events: none;
}

.cta::after {
  content: '';
  position: absolute;
  bottom: -150px;
  right: -50px;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.08);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
}

.cta h2 {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(2.5rem, 6vw, 5rem);
  color: white;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.cta p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.05rem;
  margin-bottom: 3rem;
}

.cta-btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: white;
  color: var(--orange);
  text-decoration: none;
  padding: 1rem 2.5rem;
  border-radius: 100px;
  font-weight: 700;
  font-size: 1rem;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
}

.btn-outline-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: white;
  text-decoration: none;
  padding: 1rem 2.5rem;
  border-radius: 100px;
  font-weight: 700;
  font-size: 1rem;
  border: 2px solid white;
  transition: background 0.2s;
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* ========== FOOTER ========== */
footer {
  background: var(--brown-dark);
  color: rgba(255, 255, 255, 0.38);
  text-align: center;
  padding: 3rem 2rem;
  font-size: 0.85rem;
}

footer strong {
  color: rgba(255, 255, 255, 0.75);
}

/* ========== ANIMATIONS ========== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

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

/* ========== RESPONSIVE ========== */

/* ---- タブレット (〜900px) ---- */
@media (max-width: 900px) {

  /* NAV */
  .nav-links {
    display: none;
  }

  /* HERO */
  .hero-stats {
    gap: 1.5rem;
    flex-wrap: wrap;
  }

  /* ABOUT */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  /* FEATURES */
  .fi-grid {
    grid-template-columns: 1fr;
  }

  /* HOW TO USE */
  .why-grid {
    grid-template-columns: 1fr 1fr;
  }

  /* TECH */
  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ---- スマホ (〜600px) ---- */
@media (max-width: 600px) {

  /* ---- 共通 ---- */
  .br-sp {
    display: block;
  }

  section {
    padding: 5rem 1.5rem !important;
  }

  /* ---- NAV ---- */
  .nav {
    padding: 0 1rem;
  }

  /* ---- HERO ---- */
  .hero {
    padding: 1.5rem 1.5rem 2.5rem;
    background:
      linear-gradient(to right,
        var(--brown-dark) 0%,
        var(--brown-dark) 50%,
        rgba(44, 26, 14, 0.7) 80%,
        rgba(44, 26, 14, 0) 95%),
      url('./img/top-sp.jpg') center right / cover no-repeat;
  }

  .stat-num {
    font-size: 2rem;
  }

  .hero-title {
    font-size: 2.6rem;
  }

  /* ---- ABOUT ---- */
  .about-phone {
    position: relative;
    height: 400px;
    overflow: hidden;
  }

  .mockup-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
  }

  .about-phone::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 150px;
    background: linear-gradient(to bottom,
        rgba(247, 239, 229, 0) 0%,
        var(--cream-dark) 100%);
  }

  /* ---- FEATURES (アコーディオン) ---- */
  .fi-img {
    width: 60px;
    height: 60px;
    border-radius: 18px;
  }

  .fi-img svg {
    width: 30px;
    height: 30px;
  }

  /* ---- FEATURES (アコーディオン) ---- */

  /* カードのベースレイアウトを固定 */
  .fi-card {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
  }

  /* fi-bodyを縦並びに固定 */
  .fi-body {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
  }

  /* タイトル行：タイトルとアイコンを左右に並べる */
  .fi-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
  }

  .fi-title {
    margin: 0;
    flex: 1;
  }

  .accordion-icon {
    display: inline-block;
    flex-shrink: 0;
    transition: transform 0.3s ease;
  }

  /* 閉じている状態 */
  .fi-body .fi-desc,
  .fi-body .fi-tags {
    display: none;
  }

  /* 開いている状態 */
  .fi-card.active {
    align-items: flex-start;
  }

  .fi-card.active .accordion-icon {
    transform: rotate(180deg);
  }

  .fi-card.active .fi-desc,
  .fi-card.active .fi-tags {
    display: block;
    margin-top: 0.6rem;
  }

  /* ---- HOW TO USE (アコーディオン) ---- */
  .why-grid {
    grid-template-columns: 1fr;
  }

  /* カードのベースレイアウトを固定 */
  .why-card {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
  }

  .why-icon {
    margin-bottom: 0;
    flex-shrink: 0;
  }

  /* テキスト部分まとめるラッパー */
  .why-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
  }

  /* タイトル行：タイトルとアイコンを左右に並べる */
  .why-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
  }

  .why-card h3 {
    margin-bottom: 0;
    flex: 1;
  }

  /* 閉じている状態 */
  .why-card p {
    display: none;
  }

  /* 開いている状態 */
  .why-card.active {
    align-items: flex-start;
  }

  .why-card.active .accordion-icon {
    transform: rotate(180deg);
  }

  .why-card.active p {
    display: block;
    margin-top: 0.6rem;
  }

  /* ---- STRUGGLES (アコーディオン) ---- */
  .struggle-item {
    padding: 1.5rem;
    gap: 1.5rem;
  }

  .struggle-num {
    font-size: 2rem;
  }

  .struggle-sp {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
  }

  .struggle-item .accordion-icon {
    display: inline-block;
    flex-shrink: 0;
    transition: transform 0.3s ease;
  }

  /* 閉じている状態 */
  .struggle-content p {
    display: none;
  }

  /* 開いている状態 */
  .struggle-item.active .accordion-icon {
    transform: rotate(180deg);
  }

  .struggle-item.active .struggle-content p {
    display: block;
  }

  /* ---- FUTURE (アコーディオン) ---- */
  .future-item {
    padding: 1.5rem;
    gap: 1.5rem;
  }

  .future-num {
    font-size: 2rem;
  }

  .future-sp {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
  }

  .future-item .accordion-icon {
    display: inline-block;
    flex-shrink: 0;
    transition: transform 0.3s ease;
  }

  /* 閉じている状態 */
  .future-content p,
  .future-tech {
    display: none;
  }

  /* 開いている状態 */
  .future-item.active .accordion-icon {
    transform: rotate(180deg);
  }

  .future-item.active .future-content p,
  .future-item.active .future-tech {
    display: block;
  }
}