/* 
  TalkTalkハングル LP - V2 Korean School Style
  韓国語教室テイスト（パステル・ポップ・トレンド風）
*/
:root {
  /* Colors - Logo Green Palette */
  --color-primary: #a8c84f;
  --color-primary-dark: #7d9d32;
  --color-primary-light: #dbe8ae;
  --color-accent: #c7dd74;
  --color-accent-light: #e7f0c1;
  --color-cta: #f29a38;
  --color-cta-dark: #d97916;
  --color-cta-light: #ffd19a;
  --color-bg-hero: #f5fae9;
  --color-bg-gray: #fbfdf4;
  --color-bg-card: rgba(255, 255, 255, 0.82);
  --color-text-main: #313726;
  --color-text-light: #697159;
  --color-danger: #d96d5d;
  --color-white: #FFFFFF;
  --color-yellow: #f1df82;
  --color-mint: #d5e7c7;

  /* Typography */
  --font-main: 'Noto Sans JP', sans-serif;
  --font-heading: 'Noto Sans JP', sans-serif;

  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 40px;
  --spacing-xl: 60px;
  --spacing-xxl: 100px;

  /* Effects */
  --glass-bg: rgba(255, 255, 255, 0.68);
  --glass-border: rgba(168, 200, 79, 0.18);
  --shadow-soft: 0 8px 32px rgba(125, 157, 50, 0.14);
  --shadow-card: 0 4px 20px rgba(125, 157, 50, 0.1);
  --shadow-hover: 0 12px 40px rgba(125, 157, 50, 0.2);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
}

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

html {
  scroll-behavior: smooth;
  background-color: #e8eadf;
  overflow-x: hidden;
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  font-weight: 400;
  color: var(--color-text-main);
  line-height: 1.7;
  background-color: #fcfdf7;
  overflow-x: clip;
  max-width: 480px;
  margin: 0 auto;
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.08);
  position: relative;
}

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

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

ul {
  list-style: none;
}

/* Utilities */
.text-green {
  color: var(--color-primary);
}

.text-center {
  text-align: center;
}

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

.bg-gray {
  background-color: var(--color-bg-gray);
}

.section-padding {
  padding: var(--spacing-xxl) 0;
}

.container {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }

/* ─── Buttons ───────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 32px;
  border-radius: 50px;
  font-weight: 700;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  border: none;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-cta) 0%, var(--color-cta-dark) 100%);
  color: var(--color-white);
  box-shadow: 0 8px 24px rgba(217, 121, 22, 0.28);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 32px rgba(217, 121, 22, 0.38);
}

.btn-hero {
  font-size: 15px;
  width: 100%;
  max-width: 100%;
  padding: 14px 24px;
  animation: pulse-glow 2.5s infinite;
}

.btn-hero .btn-text {
  flex-grow: 1;
  text-align: center;
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 8px 24px rgba(217, 121, 22, 0.28); }
  50% { box-shadow: 0 8px 34px rgba(242, 154, 56, 0.46); }
}

.btn-hero .material-icons {
  margin-left: 8px;
}

.btn-large {
  font-size: 20px;
  padding: 20px 40px;
  width: 100%;
  max-width: 380px;
}

.btn-large .material-icons {
  margin-left: 8px;
  font-size: 24px;
}

/* ─── Section Titles ────────────────────── */
.section-title {
  text-align: center;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-bottom: var(--spacing-xl);
  font-family: var(--font-heading);
  display: flex;
  flex-direction: column;
  align-items: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-light);
  margin-top: 8px;
  letter-spacing: 0.05em;
  -webkit-text-fill-color: var(--color-text-light);
}

/* ─── Header ────────────────────────────── */
.header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 100;
  padding: 14px 18px;
  background-color: rgba(252, 253, 247, 0.92);
  backdrop-filter: blur(10px);
}

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

.logo {
  height: 60px;
}

.hamburger-menu {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: white;
  border: none;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  z-index: 1000;
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.hamburger-menu:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-hover);
}

.mobile-nav {
  position: absolute;
  top: 0;
  right: 0;
  width: 280px;
  height: 100vh;
  background: linear-gradient(180deg, var(--color-bg-hero) 0%, var(--color-white) 100%);
  box-shadow: -5px 0 30px rgba(125, 157, 50, 0.15);
  z-index: 999;
  display: flex;
  flex-direction: column;
  padding: 80px 30px 30px;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(20px);
  transform: translateX(100%);
}

.mobile-nav.open {
  transform: translateX(0);
}

/* Navigation Overlay */
.nav-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  min-height: 100vh;
  background: rgba(0, 0, 0, 0.35);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.nav-overlay.open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav a {
  font-size: 18px;
  padding: 15px 0;
  border-bottom: 1px solid var(--color-primary-light);
  font-weight: 500;
  color: var(--color-text-main);
  transition: color 0.3s;
}

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

/* ─── Hero Section ──────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--color-bg-hero) 0%, #fdfef6 52%, #eef6d9 100%);
  position: relative;
  overflow: hidden;
  padding: 88px 0 56px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(215, 233, 161, 0.35), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -20%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(168, 200, 79, 0.18), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* Desktop overrides disabled for mobile-native design */

.hero-main {
  position: relative;
  z-index: 2;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  display: grid;
  gap: 28px;
  align-items: center;
}



.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  width: 100%;
  padding: 24px 20px 0;
  z-index: 2;
}

.hero-cta-note {
  font-size: 12px;
  color: var(--color-text-light);
  margin-top: 12px;
  text-align: center;
  width: 100%;
}



.hero-title {
  font-size: clamp(24px, 5vw, 24px);
  font-family: var(--font-heading);
  line-height: 1.35;
  margin-top: 32px;
  margin-bottom: 14px;
  letter-spacing: 0.03em;
  text-align: left;
}

.hero-subtitle {
  font-size: 14px;
  margin-bottom: 20px;
  color: var(--color-text-main);
  font-weight: 500;
  line-height: 1.6;
  text-align: left;
}

.hero-bubbles {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: 10px;
  margin-bottom: 20px;
}

.bubble {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1.5px solid var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 999px;
  padding: 8px 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.3;
  box-shadow: 0 4px 15px rgba(125, 157, 50, 0.12);
  transition: transform 0.3s ease;
}

.bubble:hover {
  transform: translateY(-2px);
}

.hero-campaign {
  background: var(--color-primary);
  border: none;
  border-radius: 20px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 16px;
  color: white;
  display: inline-block;
}

.hero-image-container {
  position: relative;
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
  padding: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
}

.hero-image {
  width: 100%;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  box-shadow: var(--shadow-soft);
  object-fit: cover;
  flex: 1;
  min-height: 300px;
}

.hero-image-badge {
  position: absolute;
  top: 0px;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 120px;
  z-index: 10;
}

.badge-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.hero-image-caption {
  background: var(--glass-bg);
  backdrop-filter: blur(15px);
  padding: 60px 20px 30px;
  text-align: center;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  box-shadow: var(--shadow-soft);
  position: relative;
  border: 1px solid var(--glass-border);
}

.caption-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 10px;
}

.caption-line {
  color: var(--color-text-light);
  font-size: 14px;
}

.hero-cta-note {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-light);
}

.hero-proof-strip {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 32px));
  margin: 26px auto 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}



.hero-proof-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 66px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(168, 200, 79, 0.18);
  box-shadow: var(--shadow-card);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-main);
  text-align: center;
}

.hero-proof-item .material-icons {
  font-size: 20px;
  color: var(--color-primary-dark);
}

.section-lead {
  max-width: 760px;
  margin: 0 auto 34px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-text-light);
}

/* ─── For You Section ───────────────────── */
.for-you-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}



.for-you-card {
  min-height: 100%;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.82) 0%, rgba(245, 250, 233, 0.92) 100%);
  border: 1px solid rgba(168, 200, 79, 0.18);
  box-shadow: var(--shadow-card);
}

.for-you-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(168, 200, 79, 0.14);
  color: var(--color-primary-dark);
}

.for-you-card-title {
  font-size: 21px;
  line-height: 1.5;
  margin-bottom: 12px;
}

.for-you-card-desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-light);
}

/* ─── Feature Section ───────────────────── */
.feature-cards {
  display: flex;
  flex-direction: column;
  gap: 30px;
  max-width: 600px;
  margin: 0 auto;
}

.feature-card {
  background: var(--color-bg-card);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  position: relative;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(168, 200, 79, 0.18);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.feature-img-wrapper {
  margin-top: 30px;
  margin-right: -30px;
  margin-bottom: -40px;
  margin-left: -30px;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  overflow: hidden;
}

.feature-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}



.feature-point {
  color: var(--color-primary);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.1;
  margin-bottom: 20px;
}



.point-num {
  font-size: 32px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.feature-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 15px;
  line-height: 1.4;
}

.feature-desc {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ─── Price Section ─────────────────────── */
.price-layout {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.price-side-column {
  display: grid;
  gap: 20px;
}

.price-card {
  border: 1.5px solid rgba(168, 200, 79, 0.22);
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  position: relative;
  background: var(--color-bg-card);
  backdrop-filter: blur(10px);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.price-card-primary {
  box-shadow: 0 18px 40px rgba(125, 157, 50, 0.14);
}

.price-card-secondary {
  background: rgba(255, 255, 255, 0.74);
  box-shadow: 0 10px 28px rgba(125, 157, 50, 0.08);
}

.price-card-secondary .price-card-title {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
}

.price-header-img {
  margin: -40px -30px 40px -30px;
}

.price-img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

.price-card-title {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  padding: 8px 24px;
  color: white;
  font-size: 18px;
  font-weight: 700;
  text-align: center;
  width: max-content;
  border-radius: 50px;
  box-shadow: 0 4px 15px rgba(125, 157, 50, 0.22);
}

.price-card-recommendation {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  margin-bottom: 22px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(168, 200, 79, 0.14);
  color: var(--color-primary-dark);
  font-size: 14px;
  font-weight: 700;
}

.price-list-features {
  margin-top: 20px;
  margin-bottom: 30px;
}

.price-list-features li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 10px;
  font-size: 15px;
}

.price-list-features li::before {
  content: "✦";
  color: var(--color-primary);
  position: absolute;
  left: 0;
  font-size: 14px;
}

.price-table {
  width: 100%;
  margin-bottom: 30px;
}

.price-table-header {
  display: flex;
  justify-content: space-between;
  background: linear-gradient(135deg, var(--color-bg-hero), #f2f8df);
  color: var(--color-text-main);
  padding: 12px 20px;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  font-weight: 700;
}

.price-row {
  display: flex;
  justify-content: space-between;
  padding: 15px 20px;
  border-bottom: 1px solid rgba(168, 200, 79, 0.18);
  align-items: center;
  transition: background-color 0.3s ease;
}

.price-row:hover {
  background-color: rgba(168, 200, 79, 0.06);
}

.price-row:nth-child(even) {
  background-color: rgba(245, 250, 233, 0.85);
}

.price-row-recommended {
  background-color: rgba(168, 200, 79, 0.12);
}

.price-row-recommended:hover {
  background-color: rgba(168, 200, 79, 0.18);
}

.price-plan {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.price-plan-main {
  font-weight: 700;
}

.price-plan-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 26px;
  padding: 4px 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.price-amount {
  font-size: 24px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.price-amount span {
  font-size: 14px;
  -webkit-text-fill-color: var(--color-text-main);
}

.discount-banner {
  background: linear-gradient(135deg, #fff7d9, #f2f8df);
  padding: 20px;
  border-radius: var(--radius-md);
  text-align: center;
  font-weight: 700;
  border: 1px solid rgba(168, 200, 79, 0.2);
}

.discount-title {
  color: var(--color-primary-dark);
  margin-bottom: 10px;
  font-size: 18px;
}

.discount-amount {
  color: var(--color-danger);
  font-size: 32px;
  font-weight: 700;
}

.price-side-note {
  margin-bottom: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text-light);
}

.admission-offer {
  padding: 24px 22px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #fff4de, #fff9eb);
  border: 1px solid rgba(242, 154, 56, 0.22);
  box-shadow: 0 10px 28px rgba(217, 121, 22, 0.08);
  text-align: center;
}

.admission-offer-label {
  margin-bottom: 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-cta-dark);
}

.admission-offer-price {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text-main);
}

.admission-offer-note {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-light);
}

/* ─── Teacher Section ───────────────────── */
.teacher {
  background:
    radial-gradient(circle at top left, rgba(219, 232, 174, 0.28), transparent 28%),
    radial-gradient(circle at bottom right, rgba(199, 221, 116, 0.22), transparent 24%),
    var(--color-bg-gray);
}

.teacher-stage {
  position: relative;
  margin-top: 8px;
}

.teacher-carousel {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 104px 24px 24px;
  scrollbar-width: none;
}

.teacher-carousel::-webkit-scrollbar {
  display: none;
}

.teacher-track {
  display: flex;
  gap: 24px;
  width: max-content;
  align-items: stretch;
}

.teacher-card {
  position: relative;
  width: min(82vw, 428px);
  min-height: 468px;
  scroll-snap-align: center;
  background: rgba(255, 255, 255, 0.78);
  border-radius: 12px;
  padding: 124px 36px 34px;
  text-align: center;
  border: 1.5px solid rgba(168, 200, 79, 0.28);
  box-shadow: 0 14px 34px rgba(125, 157, 50, 0.12);
  transition: transform 0.35s ease, box-shadow 0.35s ease, opacity 0.35s ease;
  backdrop-filter: blur(10px);
  opacity: 0.62;
  transform: scale(0.96);
}

.teacher-card.is-active {
  opacity: 1;
  transform: scale(1);
}

.teacher-card:hover {
  opacity: 1;
  transform: translateY(-4px) scale(0.99);
  box-shadow: 0 18px 42px rgba(125, 157, 50, 0.18);
}

.teacher-img-wrapper {
  position: absolute;
  top: -102px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  justify-content: center;
}

.teacher-img {
  width: 204px;
  height: 204px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--color-primary-light);
  background: #fff;
  box-shadow: 0 0 0 8px rgba(168, 200, 79, 0.1);
}

.teacher-name {
  font-size: clamp(26px, 2.5vw, 32px);
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: 0.04em;
  color: var(--color-text-main);
}

.teacher-role {
  margin-bottom: 30px;
}

.teacher-role-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 6px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.04em;
  box-shadow: 0 8px 18px rgba(125, 157, 50, 0.18);
}

.teacher-quote {
  font-size: 19px;
  line-height: 1.9;
  color: var(--color-text-main);
  margin-bottom: 24px;
}

.teacher-favorites {
  text-align: left;
}

.teacher-favorites-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 5px 14px;
  border-radius: 999px;
  border: 1.5px solid rgba(125, 157, 50, 0.42);
  color: var(--color-primary-dark);
  background: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 12px;
}

.teacher-favorites-text {
  font-size: 19px;
  line-height: 1.85;
  color: var(--color-text-light);
}

.teacher-lead {
  max-width: 720px;
  margin-bottom: 28px;
}

.teacher-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 12px 24px rgba(125, 157, 50, 0.22);
  cursor: pointer;
  z-index: 2;
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.teacher-nav:hover {
  transform: translateY(-50%) scale(1.06);
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-accent) 100%);
}

.teacher-nav .material-icons {
  font-size: 30px;
}

.teacher-nav-prev {
  left: 0;
}

.teacher-nav-next {
  right: 0;
}

/* ─── Mobile-native base styles ──────── */
.section-padding {
  padding: 72px 0;
}

.container {
  padding: 0 18px;
}

.section-title {
  font-size: 28px;
  letter-spacing: 0.12em;
  margin-bottom: 36px;
}

.section-subtitle {
  font-size: 12px;
  margin-top: 6px;
}

.btn {
  padding: 15px 24px;
}

.btn-hero {
  max-width: 100%;
  font-size: 16px;
}

.btn-large {
  max-width: 100%;
  padding: 18px 28px;
  font-size: 18px;
}

.header {
  padding: 14px 18px;
}

.logo {
  height: 42px;
}

.hamburger-menu {
  width: 48px;
  height: 48px;
  top: 16px;
  right: 18px;
}

.hero {
  padding: 24px 0 36px;
}

.hero-main {
  width: 100%;
  gap: 0;
}

/* ── Mobile: 画像をコンパクトカードに ── */
.hero-image-container {
  max-width: none;
  padding: 0 20px;
  margin: 0;
}

.hero-image {
  min-height: 0;
  height: auto;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  object-fit: cover;
  width: 100%;
  display: block;
}

.hero-image-caption {
  position: absolute;
  bottom: 0px;
  left: 20px;
  right: 20px;
  padding: 16px 20px 16px 20px;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  backdrop-filter: blur(2px);
  border: none;
  box-shadow: none;
  text-align: left;
}

.hero-image-badge {
  top: auto;
  bottom: 40px;
  left: 36px;
  width: 64px;
  height: 64px;
  transform: none;
}

.hero-image-badge .badge-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.hero-image-caption p {
  color: #fff;
  text-shadow: 0 1px 3px rgba(0,0,0,0.5);
  margin-left: 0;
}

.caption-title {
  font-size: 16px;
}

.caption-title .text-green {
  color: #c9e47c;
}

.caption-line {
  font-size: 10px;
  margin-top: 4px;
  color: rgba(255,255,255,0.85);
}

.caption-title {
  font-size: 14px;
  line-height: 1.4;
  color: #fff;
  margin-bottom: 2px;
  -webkit-text-fill-color: #fff;
  padding-left: 90px;
}

.caption-title .text-green {
  color: var(--color-accent-light);
  -webkit-text-fill-color: var(--color-accent-light);
}

.caption-line {
  font-size: 11px;
  color: rgba(255,255,255,0.82);
  padding-left: 90px;
}

.hero-image-badge {
  width: 52px;
  height: 52px;
  top: auto;
  bottom: 10px;
  left: 16px;
  transform: none;
}

/* ── Mobile: テキストコンテンツを左揃え圧縮 ── */
.hero-content {
  width: 100%;
  max-width: none;
  padding: 0 20px;
  align-items: flex-start;
  text-align: left;
}

.hero-title {
  font-size: 22px;
  line-height: 1.45;
  letter-spacing: 0.01em;
  margin-bottom: 10px;
  max-width: none;
}

.hero-subtitle {
  font-size: 14px;
  line-height: 1.65;
  margin-bottom: 14px;
  max-width: none;
}

/* ── Mobile: バブルをピル型タグに変更 ── */
.hero-bubbles {
  gap: 8px;
  margin-bottom: 14px;
  justify-content: flex-start;
}

.bubble {
  width: auto;
  height: auto;
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 12px;
  line-height: 1.2;
  background: rgba(168, 200, 79, 0.12);
  border-color: rgba(168, 200, 79, 0.3);
  box-shadow: none;
}

.bubble br {
  display: none;
}

.hero-campaign {
  font-size: 12px;
  padding: 5px 14px;
  margin-bottom: 12px;
  border-radius: 999px;
}

.hero-cta-note {
  font-size: 12px;
  line-height: 1.5;
  margin-top: 8px;
  text-align: left;
}

.btn-hero {
  max-width: 100%;
  font-size: 15px;
  padding: 14px 20px;
}

.hero-proof-strip {
  width: 100%;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 16px;
  padding: 0 16px;
}

.hero-proof-item {
  min-height: 52px;
  padding: 10px 10px;
  font-size: 12px;
  line-height: 1.4;
}

.section-lead {
  margin-bottom: 24px;
  font-size: 14px;
  line-height: 1.8;
}

.for-you-cards {
  grid-template-columns: 1fr;
  gap: 16px;
}

.for-you-card {
  padding: 22px 20px;
}

.for-you-card-title {
  font-size: 18px;
  margin-bottom: 10px;
}

.for-you-card-desc {
  font-size: 14px;
  line-height: 1.7;
}

.feature-cards {
  gap: 20px;
}

.feature-card {
  padding: 28px 22px;
}

.feature-point {
  margin-bottom: 14px;
  font-size: 14px;
}

.point-num {
  font-size: 28px;
}

.feature-title {
  font-size: 20px;
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 14px;
  line-height: 1.65;
}

.feature-img-wrapper {
  margin-top: 20px;
  margin-right: -22px;
  margin-bottom: -28px;
  margin-left: -22px;
}

.feature-img {
  height: 170px;
}

.method-catch,
.trial-catch {
  font-size: 22px;
}

.method .section-lead {
  font-size: 14px;
  line-height: 1.8;
}

.price-card {
  padding: 32px 20px 24px;
}

.price-header-img {
  margin: -32px -20px 32px;
}

.price-card-title {
  width: calc(100% - 36px);
  max-width: 300px;
  padding: 8px 16px;
  font-size: 15px;
  line-height: 1.4;
}

.price-card-recommendation {
  min-height: 34px;
  margin-bottom: 18px;
  padding: 7px 12px;
  font-size: 12px;
}

.price-list-features {
  margin-top: 16px;
  margin-bottom: 24px;
}

.price-list-features li {
  padding-left: 20px;
  margin-bottom: 8px;
  font-size: 14px;
}

.price-table {
  margin-bottom: 24px;
}

.price-table-header {
  padding: 10px 14px;
  font-size: 13px;
}

.price-row {
  gap: 12px;
  padding: 12px 14px;
}

.price-row > div:first-child {
  font-size: 14px;
}

.price-plan {
  gap: 6px;
}

.price-plan-badge {
  font-size: 11px;
  min-height: 24px;
}

.price-row small {
  font-size: 11px;
}

.price-amount {
  font-size: 20px;
}

.price-amount span {
  font-size: 12px;
}

.discount-banner {
  padding: 16px;
}

.discount-title {
  font-size: 16px;
}

.discount-amount {
  font-size: 26px;
}

.price-side-note,
.admission-offer-note {
  font-size: 13px;
}

.admission-offer {
  padding: 20px 18px;
}

.admission-offer-price {
  font-size: 24px;
}

.teacher-lead {
  margin-bottom: 22px;
}

.teacher-stage {
  --teacher-card-width: min(86vw, 334px);
  margin-top: 8px;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
}

.teacher-carousel {
  padding: 78px calc((100vw - var(--teacher-card-width)) / 2) 18px;
}

.teacher-track {
  gap: 18px;
}

.teacher-card {
  width: var(--teacher-card-width);
  min-height: 398px;
  padding: 96px 24px 28px;
  opacity: 0.72;
  transform: scale(0.97);
}

.teacher-img-wrapper {
  top: -72px;
}

.teacher-img {
  width: 146px;
  height: 146px;
  box-shadow: 0 0 0 6px rgba(168, 200, 79, 0.1);
}

.teacher-name {
  font-size: 20px;
  margin-bottom: 12px;
}

.teacher-role {
  margin-bottom: 20px;
}

.teacher-role-pill {
  min-height: 30px;
  padding: 5px 14px;
  font-size: 12px;
}

.teacher-quote {
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 20px;
}

.teacher-favorites-label {
  min-height: 30px;
  padding: 4px 12px;
  font-size: 12px;
  margin-bottom: 10px;
}

.teacher-favorites-text {
  font-size: 16px;
  line-height: 1.75;
}

.teacher-nav {
  top: 188px;
  width: 38px;
  height: 38px;
}

.teacher-nav .material-icons {
  font-size: 22px;
}

.teacher-nav-prev {
  left: 8px;
}

.teacher-nav-next {
  right: 8px;
}

.faq-item summary {
  padding: 18px 18px 14px;
  font-size: 16px;
}

.faq-answer {
  padding: 0 18px 18px;
  font-size: 14px;
}

.trial-steps {
  gap: 16px;
}

.trial-step {
  padding: 24px 20px;
}

.step-title {
  font-size: 16px;
  margin-bottom: 10px;
}

.step-desc {
  font-size: 13px;
}

.contact .mb-md,
.access .mb-md {
  font-size: 14px;
}

.contact-tagline {
  font-size: 1.6rem;
  line-height: 1.6;
}

.contact-reassurance {
  font-size: 14px;
  line-height: 1.7;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-link {
  margin: 0;
  font-size: 13px;
}


/* ─── Trial Section ─────────────────────── */
.trial-catch {
  font-size: clamp(20px, 4vw, 24px);
  font-weight: 700;
  line-height: 1.5;
}

.trial-desc {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.7;
}

.trial-steps {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}



.trial-step {
  background: var(--color-bg-card);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-md);
  padding: 30px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(168, 200, 79, 0.16);
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.trial-step:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.step-label {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 10px;
}

.step-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 15px;
}

.step-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

.step-link {
  display: inline-flex;
  align-items: center;
  margin-top: 15px;
  font-weight: 700;
  font-size: 14px;
  color: var(--color-primary);
}

.step-link .material-icons {
  font-size: 18px;
  margin-left: 5px;
  transition: transform 0.3s;
}

.step-link:hover .material-icons {
  transform: translateX(4px);
}

/* ─── FAQ Section ───────────────────────── */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}

.faq-item {
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(168, 200, 79, 0.18);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 24px 18px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

.faq-item summary::after {
  content: 'add';
  font-family: 'Material Icons';
  font-size: 22px;
  color: var(--color-primary-dark);
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  content: 'remove';
}

.faq-answer {
  padding: 0 24px 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-light);
}

.faq-item summary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
  border-radius: var(--radius-sm);
}

/* ─── Access / Contact Section ──────────── */
.contact-tagline {
  font-size: 28px;
  line-height: 1.7;
}

.contact-reassurance {
  max-width: 620px;
  margin: 0 auto;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-light);
}

/* ─── Footer ────────────────────────────── */
.footer {
  background: linear-gradient(135deg, #4b5b1f, #748d2f);
  color: white;
  padding: 40px 0;
}

.footer-logo {
  height: 40px;
  margin: 0 auto 20px;
  filter: brightness(0) invert(1);
}

.footer-links {
  margin-bottom: 20px;
}

.footer-link {
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  margin: 0 10px;
  text-decoration: underline;
}

.copyright {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
}

/* ─── Animation Classes ─────────────────── */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

/* ─── Method section (Diary) ────────────── */
.method-catch {
  font-size: clamp(20px, 4vw, 24px);
  font-weight: 700;
  line-height: 1.5;
}