/* ===========================
   リセット & 基本設定
=========================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #0ea5e9;
  --primary-dark: #0284c7;
  --primary-light: #38bdf8;
  --accent: #f97316;
  --accent-light: #fdba74;
  --dark: #111111;
  --dark-2: #1a1a1a;
  --gray: #333333;
  --gray-light: #666666;
  --bg-light: #f0f9ff;
  --bg-warm: #fff7ed;
  --white: #ffffff;
  --font-ja: 'Noto Sans JP', sans-serif;
  --font-en: 'Bebas Neue', cursive;
  --transition: 0.3s ease;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-ja);
  color: var(--dark);
  background: var(--white);
  line-height: 1.8;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
}

/* ===========================
   共通
=========================== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-label {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 3px;
  background: var(--primary);
  color: var(--white);
  padding: 5px 16px;
  border-radius: 99px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 48px;
}

.section-desc {
  color: var(--gray-light);
  margin-top: -32px;
  margin-bottom: 48px;
  font-size: 15px;
}

.btn {
  display: inline-block;
  padding: 14px 36px;
  font-size: 15px;
  font-weight: 700;
  border-radius: 50px;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.05em;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  border: 2px solid var(--primary);
}

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(14, 165, 233, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.6);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--white);
  transform: translateY(-2px);
}

/* ===========================
   ヘッダー
=========================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 32px;
}

.logo {
  display: flex;
  align-items: center;
}

.header-logo-img {
  height: 80px;
  width: auto;
  object-fit: contain;
}

.nav-list {
  display: flex;
  gap: 36px;
  align-items: center;
}

.nav-list a {
  color: var(--gray);
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition);
  letter-spacing: 0.05em;
}

.nav-list a:hover {
  color: var(--primary);
}

.nav-cta {
  background: var(--primary);
  color: var(--white) !important;
  padding: 10px 22px;
  border-radius: 50px;
  transition: background var(--transition) !important;
}

.nav-cta:hover {
  background: var(--primary-dark) !important;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  transition: all var(--transition);
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
  display: none;
  background: rgba(255, 255, 255, 0.98);
  padding: 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.mobile-nav.open {
  max-height: 400px;
  padding: 16px 0 24px;
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
}

.mobile-nav a {
  display: block;
  color: var(--gray);
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 500;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  transition: color var(--transition), background var(--transition);
}

.mobile-nav a:hover {
  color: var(--primary);
  background: var(--bg-light);
}

/* ===========================
   ヒーロー
=========================== */
.hero {
  position: relative;
  margin-top: 120px;
  height: 58vh;
  min-height: 340px;
  max-height: 640px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: #0d1f35;
}

/* カルーセル */
.hero-carousel {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-carousel::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right,
    rgba(255, 255, 255, 0.75) 0%,
    rgba(255, 255, 255, 0.3) 10%,
    rgba(255, 255, 255, 0) 25%,
    rgba(255, 255, 255, 0) 75%,
    rgba(255, 255, 255, 0.3) 90%,
    rgba(255, 255, 255, 0.75) 100%
  );
  z-index: 1;
  pointer-events: none;
}

.hero-slide {
  position: absolute;
  inset: 0 7%;
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 1.2s ease;
}

.hero-slide.active {
  opacity: 1;
}

.hero-carousel-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.75) 0%, rgba(7, 50, 110, 0.88) 65%);
}

.hero-carousel-dots {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 2;
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.4);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: all 0.4s ease;
}

.carousel-dot.active {
  width: 28px;
  background: var(--white);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  padding: 0 40px;
  margin-left: max(40px, calc(50vw - 550px));
}

.hero-sub {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 3px;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.hero-title {
  font-family: var(--font-ja);
  font-size: clamp(40px, 6vw, 88px);
  font-weight: 900;
  background: linear-gradient(135deg, #ffffff 0%, #7dd3fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 16px;
  letter-spacing: 4px;
  white-space: nowrap;
}

.hero-watermark {
  position: absolute;
  bottom: 60px;
  left: 0;
  right: 0;
  text-align: center;
  font-family: var(--font-en);
  font-size: clamp(80px, 14vw, 180px);
  font-weight: 900;
  color: rgba(255, 255, 255, 0.04);
  letter-spacing: 16px;
  pointer-events: none;
  white-space: nowrap;
  z-index: 0;
  user-select: none;
}

.hero-tagline {
  font-size: clamp(16px, 2vw, 22px);
  color: var(--primary-light);
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: 0.1em;
}

.hero-desc {
  color: rgba(255, 255, 255, 0.75);
  font-size: 15px;
  line-height: 2;
  margin-bottom: 40px;
}

.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-logo {
  position: relative;
  z-index: 1;
  margin-left: auto;
  margin-right: max(40px, calc(50vw - 550px));
  flex-shrink: 0;
}

.hero-logo img {
  width: clamp(200px, 22vw, 320px);
  height: auto;
  object-fit: contain;
}

@media (max-width: 900px) {
  .hero-logo {
    display: none;
  }
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 1;
}

.hero-scroll span {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 4px;
  color: rgba(255, 255, 255, 0.5);
}

.scroll-line {
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.5), transparent);
  animation: scrollDown 1.5s ease-in-out infinite;
}

@keyframes scrollDown {
  0% {
    transform: scaleY(0);
    transform-origin: top;
  }

  50% {
    transform: scaleY(1);
    transform-origin: top;
  }

  51% {
    transform: scaleY(1);
    transform-origin: bottom;
  }

  100% {
    transform: scaleY(0);
    transform-origin: bottom;
  }
}

/* ===========================
   ヒーロー バッジ
=========================== */
.hero-badges {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 99px;
  font-size: 13px;
  color: var(--white);
  font-weight: 700;
  letter-spacing: 0.05em;
  backdrop-filter: blur(4px);
}

.badge-accent {
  background: rgba(249, 115, 22, 0.85);
  border-color: rgba(249, 115, 22, 0.6);
}

/* ===========================
   Welcome セクション
=========================== */
.welcome {
  background: #f0f9ff;
  background-image: radial-gradient(circle, rgba(14, 165, 233, 0.1) 1px, transparent 1px);
  background-size: 28px 28px;
}

.welcome-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.welcome-card {
  background: var(--white);
  border-radius: 20px;
  padding: 36px 24px 32px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
  border: none;
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.welcome-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary);
  border-radius: 0 0 20px 20px;
}

.welcome-card:nth-child(even)::after {
  background: var(--accent);
}

.welcome-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 48px rgba(14, 165, 233, 0.16);
}

.welcome-card:nth-child(even):hover {
  box-shadow: 0 20px 48px rgba(249, 115, 22, 0.16);
}

.welcome-icon {
  width: 72px;
  height: 72px;
  background: var(--bg-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--primary);
  transition: background var(--transition);
}

.welcome-card:nth-child(even) .welcome-icon {
  background: var(--bg-warm);
  color: var(--accent);
}

.welcome-card:hover .welcome-icon {
  background: rgba(14, 165, 233, 0.14);
}

.welcome-card:nth-child(even):hover .welcome-icon {
  background: rgba(249, 115, 22, 0.12);
}

.welcome-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--dark);
}

.welcome-card p {
  font-size: 14px;
  color: var(--gray-light);
  line-height: 1.8;
}

/* ===========================
   FAQ セクション
=========================== */
.faq {
  background: var(--bg-light);
}

.faq-list {
  max-width: 720px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.faq-item summary {
  padding: 20px 24px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--dark);
  transition: color var(--transition);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 22px;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform var(--transition);
  line-height: 1;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item[open] summary {
  color: var(--primary);
}

.faq-item p {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--gray-light);
  line-height: 2;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  padding-top: 16px;
}

/* ===========================
   About セクション
=========================== */
.about {
  background: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-text p {
  color: var(--gray);
  font-size: 15px;
  margin-bottom: 20px;
  line-height: 2;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.stat-card {
  background: var(--white);
  color: var(--dark);
  padding: 28px 24px;
  border-radius: 8px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition);
  border: 1px solid rgba(14, 165, 233, 0.15);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(14, 165, 233, 0.15);
}

.stat-card::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary);
}

.stat-num {
  font-family: var(--font-en);
  font-size: 58px;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-num span {
  font-size: 20px;
  color: var(--gray-light);
}

.stat-label {
  font-size: 13px;
  color: var(--gray-light);
  letter-spacing: 0.05em;
}

/* ===========================
   Activity セクション
=========================== */
.activity {
  background: #f8faff;
  color: var(--dark);
}

.activity-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.activity-card {
  background: var(--white);
  border: 1px solid rgba(14, 165, 233, 0.15);
  border-radius: 16px;
  padding: 36px 24px;
  text-align: center;
  transition: all var(--transition);
}

.activity-card:hover {
  border-color: var(--primary);
  transform: translateY(-6px);
  box-shadow: 0 12px 36px rgba(14, 165, 233, 0.18);
}

.activity-card:nth-child(even) {
  border-color: rgba(249, 115, 22, 0.15);
}

.activity-card:nth-child(even):hover {
  border-color: var(--accent);
  box-shadow: 0 12px 36px rgba(249, 115, 22, 0.18);
}

.activity-icon {
  width: 64px;
  height: 64px;
  background: rgba(14, 165, 233, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--primary);
  transition: background var(--transition);
}

.activity-card:nth-child(even) .activity-icon {
  background: rgba(249, 115, 22, 0.1);
  color: var(--accent);
}

.activity-card:hover .activity-icon {
  background: rgba(14, 165, 233, 0.18);
}

.activity-card:nth-child(even):hover .activity-icon {
  background: rgba(249, 115, 22, 0.18);
}

.activity-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--dark);
}

.activity-card p {
  font-size: 14px;
  color: var(--gray-light);
  line-height: 1.8;
}

/* ===========================
   Member セクション
=========================== */
.member {
  background: var(--bg-light);
}

.member-bars {
  max-width: 600px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.bar-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 15px;
  font-weight: 700;
  color: var(--dark);
}

.bar-track {
  height: 10px;
  background: rgba(0, 0, 0, 0.1);
  border-radius: 99px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 99px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.age-note {
  margin-top: 48px;
  padding: 24px 32px;
  background: var(--white);
  border-left: 4px solid var(--primary);
  border-radius: 0 8px 8px 0;
  font-size: 15px;
  color: var(--gray);
  max-width: 600px;
}

.age-note strong {
  color: var(--dark);
}

/* ===========================
   Join セクション
=========================== */
.join {
  background: var(--white);
}

.join-steps {
  display: flex;
  align-items: stretch;
  gap: 20px;
  margin-bottom: 64px;
  flex-wrap: wrap;
}

.step {
  flex: 1;
  min-width: 200px;
  display: flex;
  flex-direction: column;
  background: #f8faff;
  border-radius: 16px;
  padding: 28px 24px 24px;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(14, 165, 233, 0.1);
}

.step-num {
  font-family: var(--font-en);
  font-size: 100px;
  color: var(--accent);
  line-height: 0.9;
  opacity: 0.1;
  position: absolute;
  bottom: -12px;
  right: 8px;
  pointer-events: none;
  user-select: none;
}

.step-content h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--dark);
}

.step-content p {
  font-size: 14px;
  color: var(--gray-light);
  line-height: 1.8;
}

.step-content strong {
  color: var(--primary);
}

.step-arrow {
  font-size: 28px;
  color: var(--primary);
  flex-shrink: 0;
  align-self: center;
  opacity: 0.4;
}

.fee-box {
  background: var(--bg-light);
  color: var(--dark);
  border-radius: 12px;
  padding: 48px;
  max-width: 700px;
  border: 1px solid rgba(14, 165, 233, 0.15);
}

.fee-box h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 32px;
  color: var(--dark);
  letter-spacing: 0.1em;
}

.fee-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.fee-item {
  text-align: center;
  padding: 28px;
  background: var(--white);
  border-radius: 8px;
  border: 1px solid rgba(14, 165, 233, 0.15);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.fee-label {
  font-size: 13px;
  color: var(--gray-light);
  margin-bottom: 12px;
  letter-spacing: 0.1em;
}

.fee-price {
  font-family: var(--font-en);
  font-size: 36px;
  color: var(--primary);
  line-height: 1;
}

.fee-note {
  font-size: 12px;
  color: var(--gray-light);
  margin-top: 8px;
}

.fee-price-free {
  color: var(--accent);
}

/* ===========================
   Blog セクション
=========================== */
.blog {
  background: var(--white);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.blog-card {
  background: var(--white);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
  border: none;
  border-left: 5px solid var(--primary);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}

.blog-card:nth-child(3n+2) {
  border-left-color: var(--accent);
}

.blog-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(14, 165, 233, 0.15);
}

.blog-card:nth-child(3n+2):hover {
  box-shadow: 0 20px 48px rgba(249, 115, 22, 0.15);
}

.blog-card-header {
  background: none;
  padding: 20px 24px 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.blog-card-date {
  font-family: var(--font-en);
  font-size: 13px;
  color: var(--gray-light);
  letter-spacing: 2px;
  opacity: 1;
  margin-bottom: 0;
}

.blog-card-tag {
  display: inline-block;
  background: var(--bg-light);
  border-radius: 99px;
  padding: 3px 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--primary);
}

.blog-card:nth-child(3n+2) .blog-card-tag {
  background: var(--bg-warm);
  color: var(--accent);
}

.blog-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--dark);
  line-height: 1.5;
}

.blog-card-desc {
  font-size: 13px;
  color: var(--gray-light);
  line-height: 1.8;
  flex: 1;
}

.blog-more {
  text-align: center;
  margin-top: 48px;
}

/* ===========================
   Contact セクション
=========================== */
.contact {
  background: var(--bg-light);
  color: var(--dark);
  text-align: center;
}

.contact .section-title {
  color: var(--dark);
}

.contact .section-desc {
  color: var(--gray-light);
  margin-bottom: 56px;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.contact-btn {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 40px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 16px;
  transition: all var(--transition);
  min-width: 260px;
  color: var(--white);
}

.contact-btn:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.instagram {
  background: linear-gradient(135deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
}

.instagram:hover {
  box-shadow: 0 8px 32px rgba(220, 39, 67, 0.5);
}

.x-twitter {
  background: #000000;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.x-twitter:hover {
  background: #111;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
}

.contact-btn svg {
  flex-shrink: 0;
}

.contact-btn small {
  font-size: 12px;
  opacity: 0.8;
  font-weight: 400;
}

/* ===========================
   申し込みフォーム
=========================== */
.contact-form-wrap {
  max-width: 640px;
  margin: 0 auto 64px;
  background: var(--white);
  border: 1px solid rgba(14, 165, 233, 0.15);
  border-radius: 16px;
  padding: 48px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.07);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.form-group label {
  font-size: 13px;
  font-weight: 700;
  color: var(--gray);
  letter-spacing: 0.05em;
}

.form-group label .required {
  color: var(--primary);
  margin-left: 4px;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--white);
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 15px;
  color: var(--dark);
  font-family: var(--font-ja);
  transition: border-color var(--transition), background var(--transition);
  outline: none;
  width: 100%;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(0, 0, 0, 0.3);
}

.form-group select option {
  background: var(--white);
  color: var(--dark);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  background: var(--bg-light);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-submit {
  width: 100%;
  padding: 16px;
  font-size: 16px;
  font-weight: 700;
  background: var(--primary);
  color: var(--white);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  letter-spacing: 0.1em;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  margin-top: 8px;
}

.form-submit:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(14, 165, 233, 0.4);
}

.form-divider {
  text-align: center;
  color: var(--gray-light);
  font-size: 13px;
  margin: 40px 0 32px;
  position: relative;
}

.form-divider::before,
.form-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  width: calc(50% - 80px);
  height: 1px;
  background: rgba(0, 0, 0, 0.1);
}

.form-divider::before {
  left: 0;
}

.form-divider::after {
  right: 0;
}

.form-success {
  text-align: center;
  padding: 40px 20px;
  color: var(--dark);
}

.form-success .success-icon {
  margin-bottom: 16px;
}

.form-success h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
}

.form-success p {
  font-size: 14px;
  color: var(--gray-light);
  line-height: 2;
}

/* ===========================
   フッター
=========================== */
.footer {
  background: var(--white);
  color: var(--gray-light);
  text-align: center;
  padding: 40px 24px;
  border-top: 1px solid rgba(14, 165, 233, 0.15);
}

.footer-logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  opacity: 0.7;
  margin-bottom: 12px;
}

.footer-area {
  font-size: 13px;
  margin-bottom: 16px;
}

.footer-copy {
  font-size: 12px;
  color: rgba(0, 0, 0, 0.3);
}

/* ===========================
   ポジション診断
=========================== */
.diagnosis {
  background: linear-gradient(160deg, #f0f9ff 0%, #e0f2fe 100%);
}

/* 画面切り替え */
.diag-screen {
  display: none;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  max-width: 640px;
  margin: 0 auto;
}

.diag-screen.diag-active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

/* カード共通 */
.diag-card {
  background: var(--white);
  border-radius: 24px;
  padding: 48px 40px;
  box-shadow: 0 8px 40px rgba(14, 165, 233, 0.12);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

/* イントロ */
.diag-intro-desc {
  font-size: 15px;
  color: var(--gray);
  line-height: 2;
  margin-bottom: 28px;
  text-align: center;
}

.diag-intro-badges {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-bottom: 36px;
}

.diag-start-btn {
  display: block;
  width: 100%;
  text-align: center;
  font-size: 16px;
  padding: 16px;
}

/* プログレスバー */
.diag-progress-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.diag-progress-track {
  flex: 1;
  height: 6px;
  background: rgba(14, 165, 233, 0.15);
  border-radius: 99px;
  overflow: hidden;
}

.diag-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 99px;
  width: 0%;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.diag-progress-label {
  font-family: var(--font-en);
  font-size: 13px;
  color: var(--gray-light);
  letter-spacing: 1px;
  white-space: nowrap;
  flex-shrink: 0;
}

/* 質問 */
.diag-qnum {
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--primary);
  margin-bottom: 16px;
  font-weight: 700;
}

.diag-qtext {
  font-size: 20px;
  font-weight: 900;
  color: var(--dark);
  line-height: 1.5;
  margin-bottom: 32px;
}

/* 回答ボタン */
.diag-answers {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.diag-answer-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 14px 18px;
  background: var(--white);
  border: 2px solid rgba(14, 165, 233, 0.2);
  border-radius: 12px;
  cursor: pointer;
  font-family: var(--font-ja);
  font-size: 15px;
  color: var(--dark);
  text-align: left;
  transition: all 0.2s ease;
}

.diag-answer-btn:hover:not(:disabled) {
  border-color: var(--primary);
  background: var(--bg-light);
  transform: translateX(4px);
}

.diag-answer-btn:disabled {
  cursor: default;
  opacity: 0.5;
}

.diag-answer-btn.selected {
  border-color: var(--primary);
  background: var(--bg-light);
  opacity: 1;
}

.diag-answer-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: rgba(14, 165, 233, 0.12);
  color: var(--primary);
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
  transition: background 0.2s ease, color 0.2s ease;
}

.diag-answer-btn.selected .diag-answer-label {
  background: var(--primary);
  color: var(--white);
}

/* カードスライドアニメーション */
.diag-card.diag-exit {
  opacity: 0;
  transform: translateX(-24px);
}

.diag-card.diag-exit-back {
  opacity: 0;
  transform: translateX(24px);
}

.diag-card.diag-enter {
  animation: diagSlideIn 0.3s ease forwards;
}

.diag-card.diag-enter-back {
  animation: diagSlideInBack 0.3s ease forwards;
}

@keyframes diagSlideIn {
  from { opacity: 0; transform: translateX(24px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes diagSlideInBack {
  from { opacity: 0; transform: translateX(-24px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* 戻るボタン */
.diag-back-btn {
  display: block;
  margin-top: 20px;
  padding: 0;
  background: none;
  border: none;
  color: var(--gray-light);
  font-family: var(--font-ja);
  font-size: 13px;
  cursor: pointer;
  transition: color var(--transition);
}

.diag-back-btn:hover {
  color: var(--primary);
}

/* 結果画面 */
.diag-result-lead {
  text-align: center;
  font-size: 15px;
  color: var(--gray-light);
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}

.diag-result-card {
  background: var(--white);
  border-radius: 24px;
  padding: 40px 36px;
  box-shadow: 0 8px 40px rgba(14, 165, 233, 0.12);
  border-top: 6px solid var(--primary);
  text-align: center;
  margin-bottom: 32px;
}

.diag-result-icon {
  font-size: 64px;
  line-height: 1;
  margin-bottom: 16px;
  animation: diagBounce 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes diagBounce {
  from { transform: scale(0.3); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}

.diag-result-type {
  font-family: var(--font-ja);
  font-size: clamp(22px, 4vw, 32px);
  font-weight: 900;
  color: var(--dark);
  margin-bottom: 12px;
}

.diag-result-tagline {
  font-size: 15px;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 8px;
}

.diag-result-desc {
  font-size: 14px;
  color: var(--gray);
  line-height: 2;
  margin-bottom: 24px;
}

.diag-result-traits {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 24px;
}

.diag-trait {
  display: inline-block;
  padding: 5px 14px;
  background: var(--bg-light);
  border-radius: 99px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 700;
}

.diag-result-catchcopy {
  font-size: 16px;
  font-weight: 900;
  color: var(--dark);
  letter-spacing: 0.05em;
}

/* スコアバー */
.diag-score-wrap {
  background: var(--white);
  border-radius: 20px;
  padding: 32px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  margin-bottom: 32px;
}

.diag-score-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--gray-light);
  letter-spacing: 0.05em;
  margin-bottom: 24px;
  text-align: center;
}

.diag-score-bars {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.diag-score-bar-item {
  display: grid;
  grid-template-columns: 130px 1fr 40px;
  align-items: center;
  gap: 12px;
  opacity: 0.55;
  transition: opacity 0.2s;
}

.diag-score-bar-item.winner {
  opacity: 1;
}

.diag-score-bar-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--dark);
  white-space: nowrap;
}

.diag-score-bar-track {
  height: 8px;
  background: rgba(0, 0, 0, 0.07);
  border-radius: 99px;
  overflow: hidden;
}

.diag-score-bar-fill {
  height: 100%;
  border-radius: 99px;
  width: 0%;
  transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.diag-score-bar-num {
  font-family: var(--font-en);
  font-size: 13px;
  color: var(--gray-light);
  text-align: right;
}

/* CTA */
.diag-cta {
  text-align: center;
  padding: 40px 32px;
  background: var(--white);
  border-radius: 20px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.diag-cta-text {
  font-size: 15px;
  color: var(--gray);
  line-height: 2;
  margin-bottom: 28px;
}

.diag-cta-btns {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.diag-retry-btn {
  background: transparent;
  color: var(--gray);
  border: 2px solid rgba(0,0,0,0.15);
}

.diag-retry-btn:hover {
  border-color: var(--gray);
  background: rgba(0,0,0,0.04);
}

/* ===========================
   レスポンシブ
=========================== */
@media (max-width: 900px) {
  .nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .mobile-nav {
    display: block;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .activity-grid {
    grid-template-columns: 1fr 1fr;
  }

  .welcome-grid {
    grid-template-columns: 1fr 1fr;
  }

  .blog-grid {
    grid-template-columns: 1fr 1fr;
  }

  .join-steps {
    flex-direction: column;
  }

  .step-arrow {
    transform: rotate(90deg);
    align-self: flex-start;
    margin-left: 20px;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 72px 0;
  }

  .hero-content {
    padding: 0 24px;
    margin-left: 0;
  }

  .activity-grid {
    grid-template-columns: 1fr;
  }

  .welcome-grid {
    grid-template-columns: 1fr;
  }

  .blog-grid {
    grid-template-columns: 1fr;
  }

  .fee-grid {
    grid-template-columns: 1fr;
  }

  .contact-btn {
    min-width: unset;
    width: 100%;
    max-width: 340px;
  }

  .about-stats {
    grid-template-columns: 1fr 1fr;
  }

  .fee-box {
    padding: 32px 24px;
  }

  .header-inner {
    padding: 16px 20px;
  }

  .hero {
    margin-top: 112px;
    height: 50vw;
    min-height: 220px;
    max-height: 420px;
  }

  .hero-slide {
    inset: 0 4%;
  }

  .contact-form-wrap {
    padding: 28px 20px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
}