/* ============================================================
   みかんのき 共通スタイルシート
   ============================================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700;900&display=swap');

/* ============================================================
   CSS変数（デザイントークン）
   ============================================================ */
:root {
  --color-primary: #F47B20;
  --color-primary-dark: #D4650D;
  --color-primary-light: #FFF8F0;
  --color-accent: #FFB347;
  --color-text: #333333;
  --color-text-light: #777777;
  --color-border: #E8E8E8;
  --color-white: #FFFFFF;
  --color-bg: #FAFAFA;
  --gradient-primary: linear-gradient(135deg, #F47B20 0%, #FFB347 100%);
  --font-primary: 'Noto Sans JP', sans-serif;
  --container-max: 1200px;
  --header-height: 80px;
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --transition-base: 0.25s ease;
}

/* ============================================================
   リセット・ベーススタイル
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-primary);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-primary-dark);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: var(--font-primary);
  border: none;
  background: none;
}

/* ============================================================
   コンテナ
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

@media (min-width: 768px) {
  .container {
    padding: 0 32px;
  }
}

/* ============================================================
   セクション共通
   ============================================================ */
.section {
  padding: 64px 0;
}

@media (min-width: 768px) {
  .section {
    padding: 96px 0;
  }
}

.section--bg {
  background-color: var(--color-primary-light);
}

.section--dark {
  background-color: #1a1a2e;
  color: var(--color-white);
}

/* ============================================================
   セクションタイトル
   ============================================================ */
.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title__en {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.section-title__ja {
  display: block;
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--color-text);
  line-height: 1.3;
  position: relative;
  padding-bottom: 16px;
}

.section-title__ja::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: 2px;
  margin: 16px auto 0;
}

.section-title__sub {
  display: block;
  font-size: 0.9375rem;
  color: var(--color-text-light);
  margin-top: 12px;
}

@media (min-width: 768px) {
  .section-title__ja {
    font-size: 2.25rem;
  }
}

/* ============================================================
   ヘッダー
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background: transparent;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header.scrolled {
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 20px;
  max-width: var(--container-max);
  margin: 0 auto;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.header__logo-icon {
  width: 44px;
  height: 44px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.header__logo-name {
  font-size: 1.375rem;
  font-weight: 900;
  color: var(--color-primary);
}

.header__logo-sub {
  font-size: 0.625rem;
  color: var(--color-text-light);
  letter-spacing: 0.05em;
}

/* ナビゲーション（デスクトップ） */
.nav {
  display: none;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav__link {
  display: block;
  padding: 8px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--border-radius-sm);
  transition: color var(--transition-base), background var(--transition-base);
  white-space: nowrap;
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.nav__link.active {
  font-weight: 700;
}

/* ドロップダウンメニュー */
.nav__item {
  position: relative;
}

.nav__item--has-dropdown > .nav__link::after {
  content: '▾';
  font-size: 0.7rem;
  margin-left: 4px;
  vertical-align: middle;
}

.nav__dropdown {
  position: absolute;
  top: 100%;
  padding-top: 8px;
  left: 0;
  min-width: 200px;
  background: var(--color-white);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  border-top: 3px solid var(--color-primary);
  z-index: 1100;
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-6px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
}

.nav__item--has-dropdown:hover .nav__dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.nav__dropdown-link {
  display: block;
  padding: 10px 18px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
  white-space: nowrap;
  transition: color var(--transition-base), background var(--transition-base);
}

.nav__dropdown-link:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* モバイルドロワー内サブメニュー */
.drawer__subnav {
  padding-left: 16px;
  border-left: 2px solid var(--color-primary-light);
  margin: 4px 0 8px;
}

.drawer__subnav-link {
  display: block;
  padding: 8px 12px;
  font-size: 0.875rem;
  color: var(--color-text-light);
  transition: color var(--transition-base);
}

.drawer__subnav-link:hover {
  color: var(--color-primary);
}

.header__cta {
  display: none;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.header__tel {
  font-size: 0.75rem;
  color: var(--color-text-light);
}

.header__tel a {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
}

@media (min-width: 1024px) {
  .header__inner {
    padding: 0 32px;
  }

  .nav {
    display: block;
  }

  .header__cta {
    display: flex;
  }
}

/* ============================================================
   ハンバーガーメニュー
   ============================================================ */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--border-radius-sm);
  transition: background var(--transition-base);
  z-index: 1200;
  position: relative;
}

.hamburger:hover {
  background: var(--color-primary-light);
}

.hamburger__line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
  transform-origin: center;
}

.hamburger.is-open .hamburger__line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.hamburger.is-open .hamburger__line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

@media (min-width: 1024px) {
  .hamburger {
    display: none;
  }
}

/* ドロワーメニュー */
.drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 300px;
  height: 100vh;
  background: var(--color-white);
  box-shadow: -4px 0 24px rgba(0,0,0,0.12);
  z-index: 1100;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
  padding: 100px 24px 40px;
}

.drawer.is-open {
  transform: translateX(0);
}

.drawer__nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 32px;
}

.drawer__nav-link {
  display: block;
  padding: 14px 16px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--border-radius-md);
  transition: background var(--transition-base), color var(--transition-base);
  border-bottom: 1px solid var(--color-border);
}

.drawer__nav-link:hover,
.drawer__nav-link.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.drawer__cta {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.drawer__tel {
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.drawer__tel a {
  display: block;
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* オーバーレイ */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 1050;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* ============================================================
   フッター
   ============================================================ */
.footer {
  background: #1c1c2e;
  color: #b0b0c0;
  padding: 64px 0 0;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.footer__brand {
  grid-column: 1;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  text-decoration: none;
}

.footer__logo-icon {
  width: 44px;
  height: 44px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.footer__logo-name {
  font-size: 1.375rem;
  font-weight: 900;
  color: var(--color-white);
}

.footer__tagline {
  font-size: 0.875rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.footer__tel {
  font-size: 0.8125rem;
}

.footer__tel a {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-accent);
}

.footer__col-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid #2e2e40;
}

.footer__nav-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer__nav-link {
  font-size: 0.875rem;
  color: #b0b0c0;
  transition: color var(--transition-base);
}

.footer__nav-link:hover {
  color: var(--color-accent);
}

.footer__classroom-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer__classroom-name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 4px;
}

.footer__classroom-info {
  font-size: 0.8125rem;
  line-height: 1.6;
}

.footer__bottom {
  margin-top: 48px;
  padding: 20px;
  border-top: 1px solid #2e2e40;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}

.footer__bottom-links {
  display: flex;
  gap: 16px;
}

.footer__bottom-link {
  font-size: 0.8125rem;
  color: #b0b0c0;
}

.footer__copy {
  font-size: 0.8125rem;
  color: #6b6b80;
}

@media (min-width: 768px) {
  .footer__inner {
    grid-template-columns: 2fr 1fr 1fr 1fr;
    padding: 0 32px;
  }

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    padding: 20px 32px;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
  }
}

/* ============================================================
   ボタン
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.9375rem;
  font-weight: 700;
  border-radius: var(--border-radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
  line-height: 1;
}

.btn--primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(244,123,32,0.35);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(244,123,32,0.45);
  color: var(--color-white);
}

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

.btn--white:hover {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn--ghost:hover {
  background: rgba(255,255,255,0.15);
  transform: translateY(-2px);
}

.btn--lg {
  padding: 16px 40px;
  font-size: 1.0625rem;
  border-radius: var(--border-radius-md);
}

/* ============================================================
   ページヘッダー
   ============================================================ */
.page-header {
  background: var(--gradient-primary);
  padding: 60px 0 48px;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.06'%3E%3Ccircle cx='30' cy='30' r='10'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.page-header__inner {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.page-header__title {
  font-size: 2rem;
  font-weight: 900;
  color: var(--color-white);
  margin-bottom: 8px;
}

.page-header__sub {
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.85);
}

@media (min-width: 768px) {
  .page-header {
    padding: 80px 0 64px;
  }

  .page-header__inner {
    padding: 0 32px;
  }

  .page-header__title {
    font-size: 2.5rem;
  }
}

/* ============================================================
   パンくずリスト
   ============================================================ */
.breadcrumb {
  padding: 12px 0;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.breadcrumb__list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
}

.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

.breadcrumb__item::after {
  content: '›';
  margin-left: 4px;
  color: var(--color-border);
}

.breadcrumb__item:last-child::after {
  display: none;
}

.breadcrumb__link {
  color: var(--color-primary);
}

@media (min-width: 768px) {
  .breadcrumb__inner {
    padding: 0 32px;
  }
}

/* ============================================================
   カード共通
   ============================================================ */
.card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.card__body {
  padding: 24px;
}

.card__icon {
  width: 56px;
  height: 56px;
  background: var(--color-primary-light);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.card__title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-text);
}

.card__text {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ============================================================
   グリッド
   ============================================================ */
.grid {
  display: grid;
  gap: 24px;
}

.grid--2 {
  grid-template-columns: 1fr;
}

.grid--3 {
  grid-template-columns: 1fr;
}

.grid--4 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ============================================================
   CTAバナー
   ============================================================ */
.cta-banner {
  background: var(--gradient-primary);
  padding: 64px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 60%);
  pointer-events: none;
}

.cta-banner__title {
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--color-white);
  margin-bottom: 12px;
  line-height: 1.3;
}

.cta-banner__text {
  font-size: 1rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 32px;
}

.cta-banner__buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.cta-banner__tel {
  color: rgba(255,255,255,0.9);
  font-size: 0.875rem;
}

.cta-banner__tel a {
  display: inline-block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
  margin-left: 8px;
}

@media (min-width: 768px) {
  .cta-banner__title {
    font-size: 2.25rem;
  }

  .cta-banner__buttons {
    flex-direction: row;
    justify-content: center;
  }
}

/* ============================================================
   フォーム
   ============================================================ */
.form {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: 40px 24px;
  box-shadow: var(--shadow-md);
}

.form__group {
  margin-bottom: 24px;
}

.form__label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.form__required {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-white);
  background: #e53935;
  padding: 2px 6px;
  border-radius: 3px;
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  font-family: var(--font-primary);
  color: var(--color-text);
  background: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--border-radius-md);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  appearance: none;
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(244,123,32,0.15);
}

.form__select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23777' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form__textarea {
  resize: vertical;
  min-height: 140px;
  line-height: 1.7;
}

.form__checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.form__checkbox {
  width: 20px;
  height: 20px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  accent-color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.form__checkbox-label {
  font-size: 0.9375rem;
  line-height: 1.6;
}

.form__error {
  font-size: 0.8125rem;
  color: #e53935;
  margin-top: 6px;
  display: none;
}

.form__error.is-visible {
  display: block;
}

.form__submit {
  text-align: center;
  margin-top: 32px;
}

@media (min-width: 768px) {
  .form {
    padding: 48px 48px;
  }

  .form__row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
}

/* ============================================================
   アコーディオン（details/summary）
   ============================================================ */
.accordion {
  border: 1.5px solid var(--color-border);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  margin-bottom: 12px;
  background: var(--color-white);
}

.accordion summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  cursor: pointer;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
  list-style: none;
  transition: background var(--transition-base);
  user-select: none;
}

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

.accordion summary:hover {
  background: var(--color-primary-light);
}

.accordion[open] summary {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-border);
}

.accordion__q-icon {
  width: 28px;
  height: 28px;
  background: var(--gradient-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 700;
  flex-shrink: 0;
}

.accordion__arrow {
  margin-left: auto;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.accordion[open] .accordion__arrow {
  transform: rotate(180deg);
}

.accordion__body {
  padding: 20px;
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.accordion__a-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 50%;
  font-size: 0.875rem;
  font-weight: 700;
  margin-right: 10px;
  flex-shrink: 0;
  vertical-align: middle;
}

/* ============================================================
   ステップ
   ============================================================ */
.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.step {
  display: flex;
  gap: 20px;
  position: relative;
  padding-bottom: 40px;
}

.step:last-child {
  padding-bottom: 0;
}

.step__left {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
}

.step__number {
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  font-weight: 900;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(244,123,32,0.3);
}

.step__line {
  width: 2px;
  flex: 1;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-border));
  margin-top: 8px;
  min-height: 32px;
}

.step:last-child .step__line {
  display: none;
}

.step__content {
  padding-top: 10px;
}

.step__title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.step__text {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ============================================================
   テーブル
   ============================================================ */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
}

th, td {
  padding: 14px 20px;
  text-align: left;
  font-size: 0.9375rem;
  border-bottom: 1px solid var(--color-border);
}

th {
  background: var(--color-primary-light);
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: #fdf5ee;
}

/* ============================================================
   画像プレースホルダー
   ============================================================ */
.img-placeholder {
  background: #F5E6D3;
  aspect-ratio: 16/9;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #F47B20;
  font-weight: 700;
}

/* ============================================================
   フェードインアニメーション
   ============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* スタッガー遅延 */
.fade-in:nth-child(1) { transition-delay: 0s; }
.fade-in:nth-child(2) { transition-delay: 0.1s; }
.fade-in:nth-child(3) { transition-delay: 0.2s; }
.fade-in:nth-child(4) { transition-delay: 0.3s; }
.fade-in:nth-child(5) { transition-delay: 0.4s; }
.fade-in:nth-child(6) { transition-delay: 0.5s; }

/* ============================================================
   Back to Top ボタン
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 24px;
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(244,123,32,0.4);
  cursor: pointer;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--transition-base), transform var(--transition-base);
  z-index: 900;
  border: none;
  font-size: 1.25rem;
  line-height: 1;
}

.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(244,123,32,0.5);
}

/* ============================================================
   ヒーローセクション
   ============================================================ */
.hero {
  min-height: calc(100vh - var(--header-height));
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 60px 0;
}

.hero__bg-pattern {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero__circle {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.07);
}

.hero__circle--1 {
  width: 400px;
  height: 400px;
  top: -100px;
  right: -100px;
}

.hero__circle--2 {
  width: 250px;
  height: 250px;
  bottom: -60px;
  left: -60px;
}

.hero__circle--3 {
  width: 150px;
  height: 150px;
  top: 40%;
  right: 15%;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(8px);
  color: var(--color-white);
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 24px;
  border: 1px solid rgba(255,255,255,0.3);
}

.hero__title {
  font-size: 2.25rem;
  font-weight: 900;
  color: var(--color-white);
  line-height: 1.25;
  margin-bottom: 20px;
}

.hero__title span {
  display: block;
}

.hero__sub {
  font-size: 1.0625rem;
  color: rgba(255,255,255,0.9);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 540px;
}

.hero__buttons {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 48px;
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.hero__stat {
  color: rgba(255,255,255,0.9);
}

.hero__stat-num {
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--color-white);
  display: block;
}

.hero__stat-label {
  font-size: 0.8125rem;
}

@media (min-width: 768px) {
  .hero__title {
    font-size: 3.25rem;
  }

  .hero__buttons {
    flex-direction: row;
  }

  .hero__inner {
    padding: 0 32px;
  }
}

/* ============================================================
   お知らせカード
   ============================================================ */
.news-card {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--color-white);
  border-radius: var(--border-radius-md);
  border: 1.5px solid var(--color-border);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  text-decoration: none;
  color: var(--color-text);
}

.news-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  color: var(--color-text);
}

.news-card__date {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  white-space: nowrap;
  flex-shrink: 0;
}

.news-card__badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 100px;
  white-space: nowrap;
  flex-shrink: 0;
}

.news-card__badge--info {
  background: #e3f2fd;
  color: #1565c0;
}

.news-card__badge--event {
  background: #fce4ec;
  color: #c62828;
}

.news-card__badge--notice {
  background: #f3e5f5;
  color: #6a1b9a;
}

.news-card__title {
  font-size: 0.9375rem;
  line-height: 1.6;
  flex: 1;
}

/* ============================================================
   特徴カード（選ばれる理由）
   ============================================================ */
.reason-card {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.reason-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.reason-card__icon {
  width: 56px;
  height: 56px;
  background: var(--gradient-primary);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.reason-card__body {}

.reason-card__title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.reason-card__text {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ============================================================
   教室カード
   ============================================================ */
.classroom-card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.classroom-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.classroom-card__header {
  background: var(--gradient-primary);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.classroom-card__num {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-white);
}

.classroom-card__name {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--color-white);
}

.classroom-card__body {
  padding: 24px;
}

.classroom-card__info {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.classroom-card__info-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9375rem;
}

.classroom-card__info-icon {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ============================================================
   保護者の声カード
   ============================================================ */
.voice-card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.voice-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.voice-card::before {
  content: '"';
  position: absolute;
  top: 16px;
  left: 20px;
  font-size: 5rem;
  color: var(--color-primary);
  opacity: 0.15;
  line-height: 1;
  font-family: Georgia, serif;
}

.voice-card__stars {
  display: flex;
  gap: 2px;
  margin-bottom: 12px;
  color: var(--color-accent);
  font-size: 1rem;
}

.voice-card__text {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 20px;
}

.voice-card__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.voice-card__avatar {
  width: 44px;
  height: 44px;
  background: var(--color-primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.voice-card__info {}

.voice-card__name {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text);
}

.voice-card__detail {
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

/* ============================================================
   プログラムカード
   ============================================================ */
.program-card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.program-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.program-card__header {
  padding: 24px 24px 0;
  display: flex;
  align-items: center;
  gap: 14px;
}

.program-card__icon {
  width: 56px;
  height: 56px;
  background: var(--gradient-primary);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.program-card__title {
  font-size: 1.125rem;
  font-weight: 700;
}

.program-card__body {
  padding: 20px 24px 24px;
}

.program-card__desc {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.program-card__list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.program-card__list-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--color-text);
}

.program-card__list-item::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ============================================================
   ユーティリティ
   ============================================================ */
.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.text-light { color: var(--color-text-light); }
.fw-bold { font-weight: 700; }
.fw-black { font-weight: 900; }

.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mt-8 { margin-top: 32px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.mb-8 { margin-bottom: 32px; }

.tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.8125rem;
  font-weight: 700;
  border-radius: 100px;
}

.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 32px 0;
}

.lead {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-text-light);
}

.highlight-box {
  background: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
  padding: 16px 20px;
  font-size: 0.9375rem;
  line-height: 1.7;
}