/* S04 Eikaiwa First — Style */

/* ---------- Custom Properties ---------- */
:root {
  --color-deep-blue: #1E3A8A;
  --color-deep-blue-dark: #15296B;
  --color-white: #FFFFFF;
  --color-brick-red: #B91C1C;
  --color-brick-red-dark: #991B1B;
  --color-ecru: #FAF8F3;
  --color-text: #1A1A1A;
  --color-text-light: #4A4A4A;
  --color-text-muted: #6B7280;
  --color-border: #E5E7EB;
  --color-border-light: #F0F0F0;

  --font-display: 'Instrument Serif', serif;
  --font-body: 'Inter Tight', sans-serif;
  --font-jp: 'Zen Kaku Gothic New', sans-serif;

  --max-width: 1200px;
  --header-height: 80px;
  --section-padding: 120px;

  --transition-base: 0.3s ease;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-white);
}

body.no-scroll {
  overflow: hidden;
}

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

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

ul,
ol {
  list-style: none;
}

.sp-only {
  display: none;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-jp);
  font-weight: 700;
  line-height: 1.3;
}

/* ---------- Utility: Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-jp);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  padding: 16px 36px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
}

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

.btn--primary:hover {
  background-color: var(--color-brick-red-dark);
  border-color: var(--color-brick-red-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn--outline:hover {
  background-color: var(--color-deep-blue);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--cta {
  background-color: var(--color-brick-red);
  color: var(--color-white);
  border-color: var(--color-brick-red);
  font-size: 1.1rem;
  padding: 20px 48px;
  border-radius: var(--radius-md);
}

.btn--cta:hover {
  background-color: var(--color-brick-red-dark);
  border-color: var(--color-brick-red-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(185, 28, 28, 0.35);
}

.btn__arrow {
  font-size: 1.2em;
  transition: transform var(--transition-base);
}

.btn--cta:hover .btn__arrow {
  transform: translateX(4px);
}

/* Pulse Animation */
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(185, 28, 28, 0.5); }
  70% { box-shadow: 0 0 0 16px rgba(185, 28, 28, 0); }
  100% { box-shadow: 0 0 0 0 rgba(185, 28, 28, 0); }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(185, 28, 28, 0.4), 0 4px 15px rgba(185, 28, 28, 0.2); }
  50% { box-shadow: 0 0 0 10px rgba(185, 28, 28, 0), 0 8px 25px rgba(185, 28, 28, 0.3); }
}

.btn--pulse {
  animation: pulse 2.5s infinite;
}

.btn--pulse-cta {
  animation: pulseGlow 2s ease-in-out infinite;
}

.btn--hover-active {
  animation: none;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 25px rgba(185, 28, 28, 0.35);
}

/* ---------- Scroll Animation ---------- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.courses__grid .animate-on-scroll:nth-child(2),
.teachers__grid .animate-on-scroll:nth-child(2),
.pricing__grid .animate-on-scroll:nth-child(2),
.voice__grid .animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.courses__grid .animate-on-scroll:nth-child(3),
.teachers__grid .animate-on-scroll:nth-child(3),
.pricing__grid .animate-on-scroll:nth-child(3),
.voice__grid .animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }
.courses__grid .animate-on-scroll:nth-child(4),
.teachers__grid .animate-on-scroll:nth-child(4) { transition-delay: 0.3s; }

/* ---------- Section (common) ---------- */
.section {
  padding: var(--section-padding) 0;
}

.section__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section__label {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-brick-red);
  margin-bottom: 12px;
}

.section__label--light {
  color: rgba(255, 255, 255, 0.7);
}

.section__title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  line-height: 1.35;
}

.section__title--light {
  color: var(--color-white);
}

.section__lead {
  font-size: 1rem;
  font-weight: 300;
  color: var(--color-text-light);
  max-width: 640px;
  margin-bottom: 56px;
  line-height: 1.9;
}

.section__lead--light {
  color: rgba(255, 255, 255, 0.8);
}

.section--blue {
  background-color: var(--color-deep-blue);
}

.section--ecru {
  background-color: var(--color-ecru);
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background-color: transparent;
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

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

.header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 1001;
}

.header__logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-deep-blue);
  color: var(--color-white);
  font-family: var(--font-display);
  font-size: 1.25rem;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base);
}

.header--scrolled .header__logo-mark {
  background-color: var(--color-deep-blue);
}

.header__logo-text {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--color-white);
  transition: color var(--transition-base);
}

.header--scrolled .header__logo-text {
  color: var(--color-deep-blue);
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: 32px;
}

.header__nav-link {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-white);
  position: relative;
  padding: 4px 0;
  transition: color var(--transition-base);
}

.header--scrolled .header__nav-link {
  color: var(--color-text);
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background-color: var(--color-brick-red);
  transition: width var(--transition-base);
}

.header__nav-link:hover::after {
  width: 100%;
}

.header__nav-link--cta {
  background-color: var(--color-brick-red);
  color: var(--color-white) !important;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.header__nav-link--cta::after {
  display: none;
}

.header__nav-link--cta:hover {
  background-color: var(--color-brick-red-dark);
}

/* Hamburger */
.header__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 30px;
  height: 30px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.header__hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-white);
  transition: all var(--transition-base);
}

.header--scrolled .header__hamburger-line {
  background-color: var(--color-deep-blue);
}

.header__hamburger--active .header__hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.header__hamburger--active .header__hamburger-line:nth-child(2) {
  opacity: 0;
}

.header__hamburger--active .header__hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  max-height: 1000px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(30, 58, 138, 0.85) 0%,
    rgba(30, 58, 138, 0.6) 50%,
    rgba(30, 58, 138, 0.75) 100%
  );
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  padding: 0 24px;
}

.hero__subtitle {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-style: italic;
  color: rgba(255, 255, 255, 0.75);
  letter-spacing: 0.15em;
  margin-bottom: 20px;
}

.hero__title {
  font-family: var(--font-jp);
  font-size: 3.25rem;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.3;
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}

.hero__description {
  font-family: var(--font-jp);
  font-size: 1rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.85);
  line-height: 2;
  margin-bottom: 40px;
}

.hero__cta {
  font-size: 1rem;
}

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

.course-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-deep-blue);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.course-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.course-card--daily {
  border-top-color: var(--color-deep-blue);
}

.course-card--business {
  border-top-color: #0D6E6E;
}

.course-card--toeic {
  border-top-color: var(--color-brick-red);
}

.course-card--kids {
  border-top-color: #D97706;
}

.course-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--color-ecru);
  margin-bottom: 20px;
  color: var(--color-deep-blue);
}

.course-card--business .course-card__icon { color: #0D6E6E; }
.course-card--toeic .course-card__icon { color: var(--color-brick-red); }
.course-card--kids .course-card__icon { color: #D97706; }

.course-card__title {
  font-family: var(--font-jp);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.course-card__level {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.course-card__lessons {
  font-family: var(--font-jp);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.course-card__desc {
  font-family: var(--font-jp);
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 20px;
}

.course-card__link {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-deep-blue);
  letter-spacing: 0.02em;
  transition: color var(--transition-base);
}

.course-card__link:hover {
  color: var(--color-brick-red);
}

/* ---------- Teachers ---------- */
.teachers__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.teacher-card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid transparent;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.teacher-card:hover {
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.teacher-card__photo-wrap {
  width: 100%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
}

.teacher-card__photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.teacher-card:hover .teacher-card__photo {
  transform: scale(1.05);
}

.teacher-card__info {
  padding: 24px 20px;
}

.teacher-card__name {
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--color-text);
}

.teacher-card__flag {
  font-size: 1.1rem;
  margin-left: 4px;
}

.teacher-card__qual {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}

.teacher-card__message {
  font-family: var(--font-jp);
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--color-text-light);
  line-height: 1.8;
  font-style: italic;
}

/* ---------- Pricing ---------- */
.pricing__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: start;
}

.pricing-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  position: relative;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.pricing-card--recommended {
  border: 2px solid var(--color-deep-blue);
  padding-top: 56px;
  box-shadow: var(--shadow-lg);
  transform: scale(1.03);
}

.pricing-card--recommended:hover {
  transform: scale(1.03) translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.pricing-card__badge {
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-deep-blue);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 24px;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.pricing-card__header {
  margin-bottom: 24px;
}

.pricing-card__name {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--color-deep-blue);
  margin-bottom: 4px;
}

.pricing-card__frequency {
  font-family: var(--font-jp);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.pricing-card__price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-border);
}

.pricing-card__yen {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
}

.pricing-card__amount {
  font-family: var(--font-body);
  font-size: 2.75rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
  letter-spacing: -0.02em;
}

.pricing-card__tax {
  font-family: var(--font-jp);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.pricing-card__features {
  text-align: left;
  margin-bottom: 32px;
}

.pricing-card__feature {
  font-family: var(--font-jp);
  font-size: 0.85rem;
  color: var(--color-text-light);
  padding: 8px 0;
  padding-left: 24px;
  position: relative;
  line-height: 1.6;
}

.pricing-card__feature::before {
  content: '';
  position: absolute;
  left: 0;
  top: 14px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--color-ecru);
  border: 2px solid var(--color-deep-blue);
}

.pricing-card--recommended .pricing-card__feature::before {
  background-color: var(--color-deep-blue);
}

.pricing-card__btn {
  width: 100%;
}

/* ---------- Student Voice ---------- */
.voice__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.testimonial {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: 40px 32px 32px;
  position: relative;
  border: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition-base);
}

.testimonial:hover {
  box-shadow: var(--shadow-md);
}

.testimonial__quote-mark {
  font-family: var(--font-display);
  font-size: 5rem;
  line-height: 1;
  color: var(--color-deep-blue);
  opacity: 0.12;
  position: absolute;
  top: 12px;
  left: 24px;
  user-select: none;
}

.testimonial__text {
  font-family: var(--font-jp);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-light);
  line-height: 1.9;
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
}

.testimonial__photo {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.testimonial__name {
  font-family: var(--font-jp);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 2px;
}

.testimonial__course {
  font-family: var(--font-jp);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ---------- Trial CTA ---------- */
.trial__inner {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.trial__en {
  font-family: var(--font-display);
  font-size: 1rem;
  font-style: italic;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.15em;
  margin-bottom: 12px;
}

.trial__title {
  font-family: var(--font-jp);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 20px;
}

.trial__desc {
  font-family: var(--font-jp);
  font-size: 1rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.8);
  line-height: 2;
  margin-bottom: 40px;
}

.trial__cta {
  margin-bottom: 16px;
}

.trial__note {
  font-family: var(--font-jp);
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ---------- FAQ ---------- */
.faq__list {
  max-width: 800px;
  margin: 0 auto;
}

.faq__item {
  border-bottom: 1px solid var(--color-border);
}

.faq__item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: color var(--transition-base);
}

.faq__question::-webkit-details-marker {
  display: none;
}

.faq__question::marker {
  display: none;
  content: '';
}

.faq__question:hover {
  color: var(--color-deep-blue);
}

.faq__q-text {
  font-family: var(--font-jp);
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.6;
}

.faq__icon {
  flex-shrink: 0;
  font-family: var(--font-body);
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--color-text-muted);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-base), color var(--transition-base);
}

.faq__item[open] .faq__icon {
  color: var(--color-brick-red);
}

.faq__answer {
  padding: 0 0 24px 0;
}

.faq__answer p {
  font-family: var(--font-jp);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-light);
  line-height: 1.9;
}

/* ---------- Access ---------- */
.access__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.access__list {
  display: flex;
  flex-direction: column;
}

.access__row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

.access__row:first-child {
  border-top: 1px solid var(--color-border);
}

.access__term {
  font-family: var(--font-jp);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text);
}

.access__detail {
  font-family: var(--font-jp);
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.access__link {
  color: var(--color-deep-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.access__link:hover {
  color: var(--color-brick-red);
}

.access__map {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

/* ---------- Footer ---------- */
.footer {
  background-color: var(--color-deep-blue-dark);
  color: var(--color-white);
  padding: 72px 0 32px;
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.footer__top {
  display: flex;
  justify-content: space-between;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 32px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.footer__logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--color-white);
  color: var(--color-deep-blue);
  font-family: var(--font-display);
  font-size: 1.1rem;
  border-radius: var(--radius-sm);
}

.footer__logo-text {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--color-white);
}

.footer__tagline {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-style: italic;
  color: rgba(255, 255, 255, 0.5);
}

.footer__links {
  display: flex;
  gap: 64px;
}

.footer__heading {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 16px;
}

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

.footer__link {
  font-family: var(--font-jp);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.75);
  transition: color var(--transition-base);
}

.footer__link:hover {
  color: var(--color-white);
}

.footer__bottom {
  text-align: center;
}

.footer__copyright {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.03em;
}

/* ---------- Tablet (768px) ---------- */
@media (max-width: 768px) {
  :root {
    --section-padding: 80px;
    --header-height: 64px;
  }

  .sp-only {
    display: inline;
  }

  /* Header */
  .header__hamburger {
    display: flex;
  }

  .header__nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-deep-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
    z-index: 999;
  }

  .header__nav--open {
    opacity: 1;
    visibility: visible;
  }

  .header__nav-list {
    flex-direction: column;
    gap: 24px;
    text-align: center;
  }

  .header__nav-link {
    font-size: 1.2rem;
    color: var(--color-white);
  }

  .header__nav--open .header__nav-link--cta {
    font-size: 1rem;
  }

  .header__hamburger--active .header__hamburger-line {
    background-color: var(--color-white);
  }

  /* Hero */
  .hero {
    min-height: 500px;
    max-height: 700px;
  }

  .hero__title {
    font-size: 2.25rem;
  }

  .hero__subtitle {
    font-size: 0.95rem;
  }

  .hero__description {
    font-size: 0.9rem;
  }

  .hero__description br {
    display: none;
  }

  /* Section */
  .section__title {
    font-size: 1.75rem;
  }

  .section__lead {
    margin-bottom: 40px;
  }

  .courses__grid,
  .teachers__grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }

  .pricing__grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto;
    gap: 24px;
  }
  .pricing-card--recommended { transform: none; }
  .pricing-card--recommended:hover { transform: translateY(-4px); }

  .voice__grid,
  .access__grid { grid-template-columns: 1fr; }
  .voice__grid { gap: 24px; }
  .access__grid { gap: 32px; }

  .trial__title { font-size: 1.75rem; }
  .trial__desc { font-size: 0.9rem; }
  .trial__desc br { display: none; }

  .footer__top { flex-direction: column; gap: 32px; }
  .footer__links { gap: 32px; flex-wrap: wrap; }
}

/* ---------- Mobile (480px) ---------- */
@media (max-width: 480px) {
  :root {
    --section-padding: 60px;
  }

  .section__inner {
    padding: 0 16px;
  }

  .hero { min-height: 450px; }
  .hero__title { font-size: 1.75rem; }
  .hero__subtitle { font-size: 0.85rem; }
  .hero__description { font-size: 0.85rem; }
  .hero__cta { font-size: 0.9rem; padding: 14px 28px; }

  .section__title { font-size: 1.5rem; }
  .section__lead { font-size: 0.9rem; margin-bottom: 32px; }

  .courses__grid { grid-template-columns: 1fr; }
  .course-card { padding: 28px 20px; }

  .teachers__grid { grid-template-columns: 1fr; max-width: 320px; margin: 0 auto; }

  .pricing-card { padding: 32px 24px; }
  .pricing-card__amount { font-size: 2.25rem; }

  .trial__title { font-size: 1.5rem; }
  .btn--cta { font-size: 0.95rem; padding: 16px 32px; }

  .faq__q-text { font-size: 0.9rem; }

  .access__row { grid-template-columns: 1fr; gap: 4px; }
  .access__map iframe { height: 250px; }

  .footer__links { flex-direction: column; gap: 28px; }
  .footer { padding: 48px 0 24px; }
}