:root {
  --green-950: #102719;
  --green-900: #173821;
  --green-700: #25563a;
  --green-100: #eaf1ec;
  --gold: #b99a52;
  --gold-soft: #e6d8b0;
  --ink: #182119;
  --muted: #667268;
  --line: #d9dfd9;
  --paper: #f9faf7;
  --white: #ffffff;
  --shadow: 0 18px 45px rgba(16, 39, 25, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", sans-serif;
  line-height: 1.8;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px clamp(16px, 4vw, 56px);
  background: rgba(249, 250, 247, 0.92);
  border-bottom: 1px solid rgba(217, 223, 217, 0.85);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--green-950);
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: clamp(10px, 3vw, 24px);
  color: var(--green-900);
  font-size: 0.88rem;
  font-weight: 700;
}

.section,
.section-band {
  padding: clamp(56px, 9vw, 104px) clamp(18px, 5vw, 72px);
}

.section {
  max-width: 1120px;
  margin: 0 auto;
}

.section-band {
  display: grid;
  max-width: 1240px;
  margin: 0 auto;
}

.hero {
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  min-height: calc(100svh - 64px);
  padding-top: clamp(34px, 7vw, 86px);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--gold);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 20px;
  color: var(--green-950);
  font-size: clamp(2.55rem, 6.4vw, 4.35rem);
  line-height: 1.12;
  font-weight: 900;
}

h1 span {
  display: block;
  white-space: nowrap;
}

h2 {
  margin-bottom: 16px;
  color: var(--green-950);
  font-size: clamp(1.9rem, 5vw, 3rem);
  line-height: 1.24;
  font-weight: 900;
}

h3 {
  margin-bottom: 8px;
  color: var(--green-950);
  font-size: 1.12rem;
  line-height: 1.45;
}

.lead {
  max-width: 680px;
  margin-bottom: 28px;
  color: #3d473f;
  font-size: clamp(1rem, 2.4vw, 1.16rem);
  font-weight: 600;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 13px 20px;
  border-radius: 8px;
  font-weight: 800;
  line-height: 1.35;
  text-align: center;
}

.button-primary {
  background: var(--green-900);
  color: var(--white);
  box-shadow: var(--shadow);
}

.button-secondary {
  background: var(--white);
  color: var(--green-900);
  border: 1px solid var(--line);
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-visual {
  position: relative;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 20px -12px -14px 18px;
  z-index: -1;
  background: var(--green-900);
  border-radius: 8px;
}

.hero-visual img {
  width: 100%;
  max-height: 660px;
  object-fit: cover;
  object-position: center;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.quick-info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  max-width: 1120px;
  margin: -20px auto 0;
  padding: 0 clamp(18px, 5vw, 72px);
}

.quick-info div {
  min-height: 96px;
  padding: 18px;
  background: var(--green-950);
  color: var(--white);
}

.quick-info div:first-child {
  border-radius: 8px 0 0 8px;
}

.quick-info div:last-child {
  border-radius: 0 8px 8px 0;
}

.quick-info span,
.price-item span {
  display: block;
  color: var(--gold-soft);
  font-size: 0.78rem;
  font-weight: 800;
}

.quick-info strong {
  display: block;
  margin-top: 4px;
  font-size: clamp(0.96rem, 2.4vw, 1.15rem);
  line-height: 1.45;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  font-weight: 600;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.72fr);
  gap: clamp(24px, 5vw, 52px);
  align-items: start;
}

.body-copy {
  color: #334037;
  font-size: 1.03rem;
  font-weight: 550;
}

.message-panel {
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 6px solid var(--gold);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.message-panel p {
  margin-bottom: 8px;
  color: var(--green-900);
  font-weight: 800;
}

.message-panel strong {
  display: block;
  margin-top: 16px;
  color: var(--ink);
  line-height: 1.55;
}

.muted {
  max-width: none;
  background: var(--green-100);
}

.muted > * {
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.feature-grid div {
  min-height: 92px;
  padding: 18px;
  background: var(--white);
  border: 1px solid rgba(23, 56, 33, 0.1);
  border-radius: 8px;
  color: var(--green-950);
  font-weight: 800;
}

.lesson-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.lesson-list article {
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 28px rgba(16, 39, 25, 0.08);
}

.lesson-list span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 16px;
  background: var(--green-900);
  color: var(--white);
  border-radius: 50%;
  font-size: 0.8rem;
  font-weight: 900;
}

.lesson-list p {
  margin-bottom: 0;
  color: var(--muted);
  font-weight: 600;
}

.coach {
  grid-template-columns: minmax(280px, 0.82fr) minmax(0, 1fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
  background: var(--white);
}

.coach-photo img {
  width: min(100%, 470px);
  margin: 0 auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center 42%;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.coach-copy p {
  color: #344039;
  font-weight: 550;
}

.coach-statement {
  margin-top: 20px;
  padding: 20px;
  background: var(--green-950);
  color: var(--white);
  border-radius: 8px;
  font-weight: 800;
  line-height: 1.75;
}

.campaign {
  padding: 22px;
  background: var(--green-950);
  color: var(--white);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.campaign span {
  display: block;
  color: var(--gold-soft);
  font-weight: 900;
}

.campaign strong {
  display: block;
  margin: 4px 0;
  font-size: clamp(1.7rem, 5vw, 2.55rem);
  line-height: 1.25;
}

.campaign p {
  margin-bottom: 0;
}

.price-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.price-item {
  min-height: 138px;
  padding: 18px;
  background: var(--white);
  border: 1px solid rgba(23, 56, 33, 0.12);
  border-radius: 8px;
}

.price-item span {
  color: var(--green-700);
}

.price-item strong {
  display: block;
  margin-top: 12px;
  color: var(--green-950);
  font-size: clamp(1.34rem, 3vw, 1.9rem);
  line-height: 1.18;
}

.price-item strong span {
  display: inline;
  color: var(--ink);
  font-size: 0.85rem;
}

.price-item.highlight {
  border-color: rgba(185, 154, 82, 0.75);
}

.price-item.trial strong {
  color: var(--gold);
}

.access-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.92fr) minmax(0, 1fr);
  gap: clamp(24px, 5vw, 48px);
  align-items: center;
}

.access-layout img {
  width: 100%;
  max-height: 560px;
  object-fit: cover;
  object-position: center;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

dl {
  margin: 0;
}

dl div {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

dt {
  color: var(--green-700);
  font-weight: 900;
}

dd {
  margin: 0;
  color: var(--ink);
  font-size: 1.08rem;
  font-weight: 800;
}

.note {
  max-width: 1120px;
  margin: 18px auto 0;
  color: var(--muted);
  font-weight: 650;
}

.contact {
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 26px;
  align-items: center;
  background: var(--green-950);
  color: var(--white);
  border-radius: 0;
}

.contact h2 {
  color: var(--white);
}

.contact p:not(.eyebrow) {
  max-width: 680px;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.82);
  font-weight: 600;
}

.contact .button-secondary {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.28);
}

footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 34px 18px 100px;
  background: var(--white);
  color: var(--green-900);
  text-align: center;
  font-weight: 800;
}

footer img {
  width: 110px;
  height: auto;
}

footer p {
  margin: 0;
}

.floating-cta {
  position: fixed;
  right: 16px;
  bottom: 16px;
  left: 16px;
  z-index: 25;
  display: none;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 12px 18px;
  background: var(--green-900);
  color: var(--white);
  border-radius: 8px;
  box-shadow: 0 16px 34px rgba(16, 39, 25, 0.26);
  font-weight: 900;
  text-align: center;
}

@media (max-width: 940px) {
  .hero,
  .coach,
  .contact,
  .two-column,
  .access-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    max-width: 560px;
    margin: 0 auto;
  }

  .feature-grid,
  .lesson-list {
    grid-template-columns: 1fr 1fr;
  }

  .price-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  body {
    padding-bottom: 70px;
  }

  .site-header {
    padding: 8px 14px;
  }

  .brand span {
    font-size: 0.98rem;
  }

  .brand img {
    width: 38px;
    height: 38px;
  }

  .header-nav {
    gap: 12px;
    font-size: 0.78rem;
  }

  .section,
  .section-band {
    padding: 50px 18px;
  }

  .hero {
    padding-top: 46px;
  }

  h1 {
    font-size: clamp(2.08rem, 10.5vw, 2.85rem);
    line-height: 1.16;
  }

  h2 {
    font-size: clamp(1.75rem, 8vw, 2.25rem);
  }

  .hero-actions,
  .contact-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .hero-visual::before {
    inset: 12px -8px -10px 10px;
  }

  .quick-info {
    grid-template-columns: 1fr;
    margin-top: 0;
    padding: 0 18px;
  }

  .quick-info div,
  .quick-info div:first-child,
  .quick-info div:last-child {
    min-height: auto;
    border-radius: 0;
  }

  .quick-info div:first-child {
    border-radius: 8px 8px 0 0;
  }

  .quick-info div:last-child {
    border-radius: 0 0 8px 8px;
  }

  .feature-grid,
  .lesson-list,
  .price-grid {
    grid-template-columns: 1fr;
  }

  .feature-grid div,
  .lesson-list article,
  .price-item {
    min-height: auto;
  }

  .coach-photo img {
    aspect-ratio: 1 / 1.08;
  }

  dl div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .contact {
    margin: 0;
  }

  footer {
    flex-direction: column;
    padding-bottom: 104px;
  }

  .floating-cta {
    display: flex;
  }
}