:root {
  --bg: #ffffff;
  --bg-2: #fff7ed;
  --bg-3: #f9fafb;
  --text: #111827;
  --text-sub: #6b7280;
  --accent: #f97316;
  --accent-dark: #ea580c;
  --accent-soft: rgba(249,115,22,0.1);
  --blue: #3b82f6;
  --green: #10b981;
  --border: #e5e7eb;
  --radius: 12px;
  --max: 1080px;
  --tr: 0.25s ease;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'Noto Sans JP', sans-serif; background: var(--bg); color: var(--text); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ===== Navbar ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; height: 64px;
  background: rgba(255,255,255,0.92); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border); z-index: 100;
}
.nav-inner { max-width: var(--max); height: 100%; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-weight: 900; font-size: 1.1rem; letter-spacing: 0.05em; display: flex; align-items: center; gap: 8px; }
.nav-logo-icon { width: 30px; height: 30px; background: var(--accent); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 0.85rem; }
.nav-links { display: flex; gap: 28px; list-style: none; align-items: center; }
.nav-links a { font-size: 0.88rem; color: var(--text-sub); font-weight: 500; transition: color var(--tr); }
.nav-links a:hover { color: var(--text); }
.nav-cta { padding: 9px 22px; background: var(--accent); color: #fff !important; border-radius: 8px; font-weight: 700 !important; transition: background var(--tr), transform var(--tr) !important; }
.nav-cta:hover { background: var(--accent-dark) !important; transform: translateY(-1px); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; color: var(--text); }
.nav-toggle svg { width: 24px; height: 24px; }

/* ===== Hero ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  padding: 100px 24px 64px; position: relative; overflow: hidden;
  background:
    linear-gradient(160deg, rgba(255,247,237,1) 0%, rgba(255,255,255,1) 60%),
    url('https://images.unsplash.com/photo-1516321318423-f06f85e504b3?auto=format&fit=crop&w=1920&q=80') right center/contain no-repeat;
}
.hero::before {
  content: ''; position: absolute; top: -100px; right: -100px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(249,115,22,0.1) 0%, transparent 65%);
  pointer-events: none;
}
.hero-inner { max-width: var(--max); margin: 0 auto; width: 100%; position: relative; z-index: 1; max-width: 620px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: var(--accent-soft); border: 1px solid rgba(249,115,22,0.25); color: var(--accent-dark); padding: 7px 16px; border-radius: 999px; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.05em; margin-bottom: 28px; }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 900; line-height: 1.2; letter-spacing: -0.02em; margin-bottom: 12px; }
.hero h1 .accent { color: var(--accent); }
.hero-sub { font-size: 1.15rem; font-weight: 700; color: var(--text-sub); margin-bottom: 20px; }
.hero-desc { font-size: 0.98rem; color: var(--text-sub); margin-bottom: 36px; line-height: 1.9; }
.hero-cta-wrap { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }
.btn-main { display: inline-flex; align-items: center; gap: 10px; padding: 17px 36px; background: var(--accent); color: #fff; border-radius: var(--radius); font-weight: 900; font-size: 1.05rem; cursor: pointer; transition: all var(--tr); border: none; font-family: inherit; box-shadow: 0 6px 24px rgba(249,115,22,0.4); }
.btn-main:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 10px 32px rgba(249,115,22,0.45); }
.btn-main svg { width: 18px; height: 18px; }
.hero-note { font-size: 0.78rem; color: var(--text-sub); }
.hero-stats { display: flex; gap: 32px; margin-top: 48px; padding-top: 36px; border-top: 1px solid var(--border); flex-wrap: wrap; }
.hero-stat-num { font-size: 1.9rem; font-weight: 900; color: var(--accent); line-height: 1; margin-bottom: 3px; }
.hero-stat-label { font-size: 0.78rem; color: var(--text-sub); }

/* ===== Section ===== */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-3); }
.section-warm { background: var(--bg-2); }
.section-dark { background: #111827; color: #fff; }
.section-label { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.12em; color: var(--accent); margin-bottom: 10px; text-transform: uppercase; }
.section-title { font-size: clamp(1.7rem, 3.2vw, 2.4rem); font-weight: 900; line-height: 1.25; letter-spacing: -0.01em; margin-bottom: 14px; }
.section-desc { color: var(--text-sub); max-width: 500px; font-size: 0.95rem; margin-bottom: 52px; line-height: 1.85; }
.section-dark .section-title { color: #fff; }
.section-dark .section-desc { color: rgba(255,255,255,0.6); }

/* ===== Features ===== */
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.feature-card { background: #fff; border: 1px solid var(--border); border-radius: 16px; padding: 32px 28px; transition: transform var(--tr), box-shadow var(--tr), border-color var(--tr); }
.feature-card:hover { transform: translateY(-5px); box-shadow: 0 12px 32px rgba(0,0,0,0.08); border-color: rgba(249,115,22,0.3); }
.feature-num { font-size: 3rem; font-weight: 900; color: rgba(249,115,22,0.15); line-height: 1; margin-bottom: 14px; letter-spacing: -0.03em; }
.feature-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; }
.feature-desc { font-size: 0.87rem; color: var(--text-sub); line-height: 1.8; }

/* ===== Curriculum ===== */
.curriculum-list { display: flex; flex-direction: column; gap: 0; max-width: 680px; }
.curriculum-item { display: flex; gap: 20px; padding: 22px 0; border-bottom: 1px solid var(--border); align-items: flex-start; }
.curriculum-item:first-child { border-top: 1px solid var(--border); }
.curriculum-week { font-size: 0.75rem; font-weight: 700; color: var(--accent); letter-spacing: 0.08em; min-width: 64px; padding-top: 3px; }
.curriculum-title { font-weight: 700; font-size: 0.98rem; margin-bottom: 4px; }
.curriculum-desc { font-size: 0.83rem; color: var(--text-sub); line-height: 1.65; }

/* ===== Instructor ===== */
.instructor-card {
  display: flex; gap: 40px; align-items: center;
  background: #fff; border: 1px solid var(--border); border-radius: 20px; padding: 40px;
  max-width: 780px;
}
.instructor-avatar {
  width: 120px; height: 120px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, var(--accent), #fbbf24);
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem; font-weight: 900; color: #fff;
  box-shadow: 0 8px 24px rgba(249,115,22,0.3);
}
.instructor-name { font-size: 1.3rem; font-weight: 900; margin-bottom: 4px; }
.instructor-title { font-size: 0.85rem; color: var(--accent); font-weight: 600; margin-bottom: 12px; }
.instructor-bio { font-size: 0.88rem; color: var(--text-sub); line-height: 1.8; }
.instructor-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.instructor-tag { font-size: 0.75rem; background: var(--accent-soft); color: var(--accent-dark); padding: 4px 12px; border-radius: 999px; font-weight: 600; }

/* ===== Voice ===== */
.voices-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; }
.voice-card { background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 26px; }
.voice-stars { color: var(--accent); font-size: 0.85rem; margin-bottom: 12px; letter-spacing: 2px; }
.voice-text { font-size: 0.88rem; color: var(--text); line-height: 1.8; margin-bottom: 16px; }
.voice-author { display: flex; align-items: center; gap: 10px; }
.voice-avatar { width: 38px; height: 38px; border-radius: 50%; background: linear-gradient(135deg, #e5e7eb, #d1d5db); display: flex; align-items: center; justify-content: center; font-size: 1rem; flex-shrink: 0; }
.voice-name { font-size: 0.85rem; font-weight: 700; }
.voice-meta { font-size: 0.75rem; color: var(--text-sub); }

/* ===== Pricing ===== */
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; max-width: 780px; }
.pricing-card { border: 1.5px solid var(--border); border-radius: 16px; padding: 36px 28px; position: relative; background: #fff; }
.pricing-card.popular { border-color: var(--accent); box-shadow: 0 8px 32px rgba(249,115,22,0.15); }
.pricing-badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--accent); color: #fff; font-size: 0.75rem; font-weight: 700; padding: 4px 16px; border-radius: 999px; white-space: nowrap; }
.pricing-plan { font-size: 0.82rem; font-weight: 700; color: var(--text-sub); letter-spacing: 0.08em; margin-bottom: 10px; }
.pricing-price { font-size: 2.4rem; font-weight: 900; line-height: 1; margin-bottom: 4px; }
.pricing-price span { font-size: 1rem; font-weight: 500; color: var(--text-sub); }
.pricing-note { font-size: 0.78rem; color: var(--text-sub); margin-bottom: 24px; }
.pricing-list { list-style: none; display: flex; flex-direction: column; gap: 10px; margin-bottom: 28px; }
.pricing-list li { font-size: 0.87rem; display: flex; align-items: center; gap: 8px; }
.pricing-list li::before { content: '✓'; color: var(--green); font-weight: 700; flex-shrink: 0; }
.btn-pricing { width: 100%; padding: 14px; border-radius: var(--radius); font-weight: 700; font-size: 0.95rem; cursor: pointer; transition: all var(--tr); border: none; font-family: inherit; text-align: center; }
.btn-pricing-main { background: var(--accent); color: #fff; box-shadow: 0 4px 16px rgba(249,115,22,0.35); }
.btn-pricing-main:hover { background: var(--accent-dark); transform: translateY(-1px); }
.btn-pricing-sub { background: var(--bg-3); color: var(--text); border: 1.5px solid var(--border); }
.btn-pricing-sub:hover { border-color: var(--accent); color: var(--accent); }

/* ===== FAQ ===== */
.faq-list { max-width: 680px; display: flex; flex-direction: column; gap: 0; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-q { display: flex; justify-content: space-between; align-items: center; padding: 20px 0; cursor: pointer; font-weight: 700; font-size: 0.95rem; gap: 16px; }
.faq-q svg { width: 18px; height: 18px; color: var(--accent); flex-shrink: 0; transition: transform var(--tr); }
.faq-item.open .faq-q svg { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding var(--tr); font-size: 0.88rem; color: var(--text-sub); line-height: 1.85; }
.faq-item.open .faq-a { max-height: 300px; padding-bottom: 18px; }

/* ===== Final CTA ===== */
.cta-box {
  background:
    linear-gradient(135deg, rgba(249,115,22,0.92) 0%, rgba(234,88,12,0.9) 100%),
    url('https://images.unsplash.com/photo-1434030216411-0b793f4b4173?auto=format&fit=crop&w=1600&q=80') center/cover;
  border-radius: 24px; padding: 80px 48px; text-align: center; color: #fff;
}
.cta-box h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); font-weight: 900; line-height: 1.25; margin-bottom: 16px; }
.cta-box p { color: rgba(255,255,255,0.85); margin-bottom: 40px; font-size: 1rem; line-height: 1.85; }
.btn-cta-white { display: inline-flex; align-items: center; gap: 10px; padding: 17px 40px; background: #fff; color: var(--accent-dark); border-radius: var(--radius); font-weight: 900; font-size: 1.05rem; transition: all var(--tr); box-shadow: 0 6px 24px rgba(0,0,0,0.15); border: none; font-family: inherit; cursor: pointer; }
.btn-cta-white:hover { transform: translateY(-2px); box-shadow: 0 10px 32px rgba(0,0,0,0.2); }

/* ===== Footer ===== */
footer { background: #111827; color: rgba(255,255,255,0.4); padding: 40px 24px; text-align: center; font-size: 0.82rem; }
.footer-logo { color: #fff; font-weight: 900; font-size: 1rem; display: flex; align-items: center; gap: 8px; justify-content: center; margin-bottom: 10px; }
.footer-logo-icon { width: 26px; height: 26px; background: var(--accent); border-radius: 7px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 0.75rem; }

/* ===== Reveal ===== */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open { display: flex; flex-direction: column; position: fixed; top: 64px; left: 0; right: 0; background: #fff; padding: 20px 24px; gap: 18px; border-bottom: 1px solid var(--border); }
  .nav-toggle { display: block; }
  .hero { padding: 90px 20px 56px; background-image: radial-gradient(circle at 80% 20%, rgba(249,115,22,0.1) 0%, transparent 50%); background-color: var(--bg-2); }
  .hero-stats { gap: 20px; }
  .instructor-card { flex-direction: column; align-items: flex-start; gap: 20px; padding: 28px; }
  .cta-box { padding: 52px 24px; }
  .section { padding: 72px 0; }
}