/* おとの森ピアノ教室 — やさしい（ラベンダー×クリーム） */

:root {
  --bg: #fbfaf6;
  --bg-alt: #f1eef8;
  --ink: #4e4a5a;
  --lavender: #8d7bb8;
  --lavender-deep: #6d5b9e;
  --cream: #f5e9c9;
  --green: #9bb89a;
}

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

body {
  font-family: "Kiwi Maru", serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 2;
}

/* header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 5vw;
}

.logo { font-size: 21px; font-weight: 500; color: var(--lavender-deep); }

.nav a {
  color: var(--ink);
  text-decoration: none;
  margin-left: 22px;
  font-size: 14px;
}

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

/* hero */
.hero {
  position: relative;
  text-align: center;
  padding: 40px 5vw 100px;
  background: linear-gradient(175deg, #ece7f6, #f7f3e8);
  overflow: hidden;
}

/* 鍵盤 */
.keys { display: flex; justify-content: center; gap: 3px; margin-bottom: 46px; }

.key { border-radius: 0 0 5px 5px; }
.key.w { width: 34px; height: 90px; background: #fff; border: 1px solid #ddd6ea; }
.key.b { width: 22px; height: 56px; background: var(--ink); margin: 0 -13px; z-index: 2; }

.hero h2 {
  font-family: "Zen Old Mincho", serif;
  font-size: clamp(28px, 4.5vw, 44px);
  font-weight: 700;
  line-height: 1.7;
  margin-bottom: 18px;
  color: var(--lavender-deep);
}

.hero-lead { margin-bottom: 34px; }

.hero-button {
  display: inline-block;
  background: var(--lavender);
  color: #fff;
  text-decoration: none;
  padding: 15px 46px;
  border-radius: 999px;
  box-shadow: 0 6px 18px rgba(109,91,158,0.3);
  transition: 0.3s;
}

.hero-button:hover { background: var(--lavender-deep); }

.note { position: absolute; color: var(--lavender); opacity: 0.4; font-size: 40px; }
.n1 { left: 10%; top: 30%; transform: rotate(-14deg); }
.n2 { right: 12%; top: 20%; font-size: 54px; transform: rotate(10deg); }
.n3 { right: 22%; bottom: 12%; transform: rotate(-6deg); }

/* sections */
.section { padding: 88px 5vw; max-width: 920px; margin: 0 auto; }
.section-alt { background: var(--bg-alt); max-width: none; }
.section-alt > * { max-width: 920px; margin-left: auto; margin-right: auto; }

.section-title {
  font-family: "Zen Old Mincho", serif;
  text-align: center;
  font-size: 25px;
  font-weight: 700;
  color: var(--lavender-deep);
  margin-bottom: 46px;
}

.section-title::after {
  content: "♪";
  display: block;
  font-size: 16px;
  color: var(--green);
  margin-top: 10px;
}

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

/* courses */
.course-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }

.course-card {
  background: #fff;
  border-radius: 20px;
  padding: 32px 24px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(78,74,90,0.08);
}

.course-icon { font-size: 36px; margin-bottom: 8px; }
.course-card h3 { font-size: 18px; color: var(--lavender-deep); }
.course-target { font-size: 13px; color: var(--green); margin-bottom: 10px; }

.course-price {
  font-family: "Zen Old Mincho", serif;
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 10px;
}

.course-price span { font-size: 13px; font-weight: 400; color: var(--ink); }
.course-desc { font-size: 13px; text-align: left; }

/* teacher */
.teacher { display: flex; gap: 40px; align-items: center; }

.teacher-photo {
  flex: 0 0 180px;
  height: 180px;
  border-radius: 50%;
  background: linear-gradient(160deg, #cec2e6, #9c8bc4);
  display: grid;
  place-items: center;
  color: rgba(255,255,255,0.85);
  letter-spacing: 0.2em;
  font-size: 14px;
}

.teacher-name { font-family: "Zen Old Mincho", serif; font-size: 21px; font-weight: 700; margin-bottom: 10px; }
.teacher-title { font-size: 14px; font-weight: 400; }
.teacher-license { margin-top: 12px; font-size: 13px; color: var(--lavender-deep); }

/* cta */
.cta {
  text-align: center;
  padding: 88px 5vw;
  background: linear-gradient(175deg, #f2ede0, #ece7f6);
}

.cta h2 { font-family: "Zen Old Mincho", serif; font-size: 25px; font-weight: 700; color: var(--lavender-deep); margin-bottom: 16px; }

.cta-button {
  display: inline-block;
  margin-top: 26px;
  background: #06c755;
  color: #fff;
  text-decoration: none;
  padding: 15px 48px;
  border-radius: 999px;
  box-shadow: 0 6px 18px rgba(6,199,85,0.3);
  transition: 0.3s;
}

.cta-button:hover { transform: translateY(-3px); }
.cta-sub { margin-top: 20px; font-size: 13px; }

/* footer */
.footer { text-align: center; padding: 30px; background: var(--lavender-deep); color: #fff; }
.footer-copy { font-size: 12px; opacity: 0.8; margin-top: 6px; }

/* mobile */
@media (max-width: 760px) {
  .header { flex-direction: column; gap: 10px; }
  .nav a { margin: 0 8px; font-size: 13px; }
  .key.w { width: 26px; height: 70px; }
  .key.b { width: 16px; height: 44px; margin: 0 -10px; }
  .course-cards { grid-template-columns: 1fr; }
  .teacher { flex-direction: column; text-align: center; }
  .teacher-license { text-align: center; }
  .section { padding: 56px 6vw; }
}