/* ========================================
   発音マスターグループ講座 LP - A案 Style
   参考LP①②③踏襲：赤+青+白+アイボリー
======================================== */

:root {
  --color-accent: #e74c3c;       /* 赤・強調 */
  --color-accent-dark: #c0392b;
  --color-secondary: #2c5fa8;    /* 青・サブ */
  --color-text: #2c2c2c;
  --color-text-light: #555;
  --color-bg: #ffffff;
  --color-bg-cream: #fdf9f3;     /* アイボリー */
  --color-bg-soft: #f7f4ee;
  --color-border: #e8e3da;
  --font-serif: 'Noto Serif JP', 'Yu Mincho', serif;
  --font-sans: 'Noto Sans JP', 'Hiragino Sans', sans-serif;
  --max-width: 760px;
  --shadow-soft: 0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-card: 0 6px 24px rgba(0, 0, 0, 0.08);
  --shadow-lift: 0 18px 48px rgba(42, 48, 66, 0.12);
  --radius-card: 24px;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  line-height: 1.85;
  background:
    radial-gradient(circle at top, rgba(231, 76, 60, 0.06), transparent 22%),
    linear-gradient(180deg, #fffdfb 0%, #ffffff 18%, #fffdfa 100%);
  -webkit-font-smoothing: antialiased;
}

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

/* ========== Container ========== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== Hero ========== */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--color-bg-cream) 0%, #ffffff 100%);
  padding: 56px 0 48px;
  border-bottom: 4px solid var(--color-accent);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 8% 20%, rgba(231, 76, 60, 0.1), transparent 24%),
    radial-gradient(circle at 88% 14%, rgba(44, 95, 168, 0.1), transparent 20%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

.hero-eyebrow {
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--color-secondary);
  font-weight: 700;
  margin-bottom: 16px;
  text-align: center;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 6vw, 38px);
  font-weight: 900;
  line-height: 1.5;
  text-align: center;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.hero-title .accent {
  color: var(--color-accent);
}

.hero-lead {
  font-size: 16px;
  text-align: center;
  margin-bottom: 28px;
  color: var(--color-text-light);
  line-height: 2;
}

.hero-image {
  position: relative;
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  text-align: center;
}

.hero-image::before {
  content: '';
  position: absolute;
  inset: auto -22px -20px auto;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(231, 76, 60, 0.08);
  filter: blur(6px);
}

.hero-image img {
  width: 100%;
  position: relative;
  border-radius: 32px;
  box-shadow: var(--shadow-lift);
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border: 8px solid rgba(255, 255, 255, 0.92);
}

.hero-image-caption {
  margin-top: 12px;
  font-size: 14px;
  color: var(--color-text-light);
  font-weight: 700;
}

.hero-meta {
  list-style: none;
  background: rgba(255, 255, 255, 0.95);
  border: 2px solid var(--color-border);
  border-radius: 20px;
  padding: 20px 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-soft);
  width: 100%;
}

.hero-meta li {
  font-size: 15px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: baseline;
}

.hero-meta li:last-child {
  border-bottom: none;
}

.hero-meta li > span:first-child {
  font-weight: 700;
  color: var(--color-secondary);
  min-width: 56px;
}

.hero-meta .strike {
  text-decoration: line-through;
  color: #999;
  font-size: 14px;
  font-weight: normal;
  margin-right: 0;
}

.hero-meta .price {
  color: var(--color-accent);
  font-weight: 900;
  font-size: 20px;
  font-family: var(--font-serif);
}

.hero-note {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 24px;
  text-align: center;
  line-height: 1.7;
}

/* ========== Buttons ========== */
.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 700;
  text-align: center;
  border-radius: 50px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-accent);
  color: white;
  padding: 16px 48px;
  font-size: 17px;
  box-shadow: 0 6px 16px rgba(231, 76, 60, 0.35);
  letter-spacing: 0.05em;
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(231, 76, 60, 0.45);
}

.btn-large {
  padding: 20px 64px;
  font-size: 19px;
  width: 100%;
  max-width: 360px;
}

/* ========== Sections ========== */
.section {
  position: relative;
  overflow: hidden;
  padding: 56px 0;
}

.section:nth-of-type(even) {
  background: linear-gradient(180deg, #fffdf9 0%, var(--color-bg-cream) 100%);
}

.section .container {
  position: relative;
  z-index: 1;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(22px, 5vw, 28px);
  font-weight: 900;
  text-align: center;
  margin-bottom: 32px;
  position: relative;
  padding-bottom: 16px;
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 56px;
  height: 3px;
  background: var(--color-accent);
}

.section p {
  margin-bottom: 16px;
  font-size: 15.5px;
  line-height: 2;
}

.section strong {
  color: var(--color-accent);
  font-weight: 700;
}

.section-split {
  display: grid;
  gap: 28px;
  align-items: center;
}

.section-copy > :last-child {
  margin-bottom: 0;
}

.section-split-reverse .feature-visual {
  order: 2;
}

.section-split-reverse .section-copy {
  order: 1;
}

.feature-visual {
  position: relative;
  margin: 0;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-lift);
  background: #fff;
}

.feature-visual::after {
  content: '';
  position: absolute;
  inset: auto 0 0;
  height: 32%;
  background: linear-gradient(180deg, transparent 0%, rgba(255, 255, 255, 0.02) 100%);
  pointer-events: none;
}

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

.feature-visual-wide {
  aspect-ratio: 16 / 11;
}

.feature-visual-square {
  max-width: 360px;
  aspect-ratio: 1 / 1;
  margin: 0 auto;
}

.feature-visual-portrait {
  border: 8px solid rgba(255, 255, 255, 0.92);
}

/* ========== Lists ========== */
.check-list {
  list-style: none;
  max-width: 600px;
  margin: 0 auto;
}

.check-list li {
  padding: 14px 0 14px 36px;
  position: relative;
  font-size: 15.5px;
  line-height: 1.8;
  border-bottom: 1px dashed var(--color-border);
}

.check-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 14px;
  width: 24px;
  height: 24px;
  background: var(--color-accent);
  color: white;
  border-radius: 50%;
  text-align: center;
  line-height: 24px;
  font-size: 14px;
  font-weight: 700;
}

.simple-list {
  list-style: disc;
  padding-left: 1.5em;
  margin: 12px 0 20px;
}

.simple-list li {
  font-size: 15.5px;
  padding: 4px 0;
}

.change-list {
  list-style: none;
  margin: 24px 0;
}

.change-list li {
  background: white;
  border-left: 4px solid var(--color-secondary);
  padding: 18px 22px;
  margin-bottom: 16px;
  font-size: 15px;
  border-radius: 14px;
  box-shadow: var(--shadow-soft);
  line-height: 1.8;
}

.change-list .arrow {
  color: var(--color-accent);
  font-weight: 700;
  margin-right: 4px;
}

.change-conclusion {
  text-align: center;
  margin-top: 32px;
  font-size: 16px;
}

/* ========== Schedule ========== */
.schedule-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  max-width: 600px;
  margin: 0 auto;
}

.schedule-card {
  background: white;
  border: 2px solid var(--color-border);
  border-radius: 18px;
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-soft);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.schedule-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.schedule-day {
  font-family: var(--font-serif);
  color: var(--color-accent);
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 8px;
}

.schedule-date {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}

.schedule-time {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.schedule-content {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-secondary);
}

.schedule-note {
  text-align: center;
  font-size: 13px;
  color: var(--color-text-light);
  margin-top: 20px;
}

/* ========== Price Section ========== */
.section-price p {
  text-align: center;
}

.big-price {
  font-family: var(--font-serif);
  font-size: 40px;
  color: var(--color-accent);
  font-weight: 900;
}

.section-price .strike {
  text-decoration: line-through;
  color: #999;
}

.price-note {
  font-size: 13px;
  color: var(--color-text-light);
  margin-top: 24px;
}

/* ========== CTA Section ========== */
.section-cta {
  background: linear-gradient(135deg, #fff5f3 0%, #fdf9f3 100%);
  text-align: center;
  padding: 72px 0;
  border-top: 4px solid var(--color-accent);
  border-bottom: 4px solid var(--color-accent);
}

.cta-title {
  font-family: var(--font-serif);
  font-size: clamp(26px, 5vw, 32px);
  font-weight: 900;
  margin-bottom: 24px;
  color: var(--color-accent);
}

.cta-lead {
  font-size: 17px;
  margin-bottom: 32px;
  line-height: 2;
}

.cta-lead span {
  display: block;
  margin: 4px 0;
}

.cta-lead .strike {
  text-decoration: line-through;
  color: #999;
  display: inline;
}

.cta-lead .price {
  color: var(--color-accent);
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 24px;
  display: inline;
}

.cta-note {
  font-size: 13px;
  color: var(--color-text-light);
  margin-top: 20px;
  line-height: 1.7;
}

/* ========== Footer ========== */
.footer {
  background: var(--color-bg-soft);
  padding: 32px 0;
  text-align: center;
}

.footer-name {
  font-family: var(--font-serif);
  font-weight: 700;
  margin-bottom: 8px;
  font-size: 15px;
}

.footer-copyright {
  font-size: 12px;
  color: var(--color-text-light);
}

/* ========== Responsive ========== */
@media (min-width: 768px) {
  .hero {
    padding: 80px 0 64px;
  }

  .hero-inner {
    flex-direction: row;
    align-items: center;
    gap: 48px;
  }

  .hero-text {
    flex: 1;
  }

  .hero-image {
    flex: 0 0 320px;
    max-width: 320px;
  }

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

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

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

  .section {
    padding: 80px 0;
  }

  .section-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
    gap: 44px;
  }

  .section-split-reverse .feature-visual {
    order: 1;
  }

  .section-split-reverse .section-copy {
    order: 2;
  }

  .section-split .section-title {
    text-align: left;
  }

  .section-split .section-title::after {
    left: 0;
    transform: none;
  }

  .section-closing .feature-visual-square {
    max-width: 320px;
  }

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

@media (min-width: 1024px) {
  :root {
    --max-width: 880px;
  }

  .hero-image {
    flex: 0 0 360px;
    max-width: 360px;
  }
}