:root {
  --ink: #211f1d;
  --muted: #6f6a64;
  --paper: #fbf8f2;
  --mist: #edf1ed;
  --blush: #f4ded8;
  --clay: #a85f50;
  --clay-dark: #7c3e36;
  --sage: #526f63;
  --navy: #26324a;
  --gold: #b89353;
  --white: #ffffff;
  --line: rgba(33, 31, 29, 0.14);
  --shadow: 0 22px 60px rgba(38, 50, 74, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  position: relative;
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", system-ui, sans-serif;
  line-height: 1.75;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(118deg, rgba(168, 95, 80, 0.08), transparent 34%),
    linear-gradient(250deg, rgba(184, 147, 83, 0.1), transparent 38%);
}

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

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(18px, 5vw, 72px);
  background: rgba(251, 248, 242, 0.86);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  color: var(--clay-dark);
  font-family: "Shippori Mincho", Georgia, "Times New Roman", serif;
  font-size: 20px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 3vw, 30px);
  color: var(--muted);
  font-size: 14px;
}

nav a {
  text-decoration: none;
}

.nav-cta {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  color: var(--white);
  background: var(--clay-dark);
  box-shadow: 0 12px 28px rgba(124, 62, 54, 0.18);
}

.hero {
  position: relative;
  min-height: calc(100vh - 72px);
  display: grid;
  align-items: end;
  overflow: hidden;
  background: var(--navy);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(110deg, transparent 18%, rgba(255, 245, 235, 0.16) 46%, transparent 64%);
  animation: softShine 9s ease-in-out infinite;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(24, 24, 28, 0.78), rgba(24, 24, 28, 0.44) 50%, rgba(24, 24, 28, 0.18)),
    linear-gradient(0deg, rgba(24, 24, 28, 0.72), rgba(24, 24, 28, 0.05) 42%);
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(950px, 100%);
  padding: clamp(56px, 8vw, 96px) clamp(20px, 7vw, 96px);
  color: var(--white);
  animation: fadeUp 900ms ease both;
}

.kicker,
.section-label {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p,
dd,
summary {
  overflow-wrap: anywhere;
}

h1,
h2 {
  margin: 0;
  font-family: "Shippori Mincho", Georgia, "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-weight: 600;
  letter-spacing: 0;
}

h1 {
  max-width: 900px;
  font-size: clamp(42px, 7vw, 88px);
  line-height: 1.12;
  text-shadow: 0 18px 44px rgba(0, 0, 0, 0.35);
}

h2 {
  position: relative;
  font-size: clamp(30px, 4.5vw, 58px);
  line-height: 1.22;
}

h3 {
  margin: 0 0 12px;
  font-size: 22px;
  line-height: 1.45;
}

p {
  margin: 18px 0 0;
}

.hero-lead {
  max-width: 760px;
  font-size: clamp(17px, 2vw, 21px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  position: relative;
  overflow: hidden;
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 26px;
  border: 1px solid transparent;
  font-weight: 700;
  text-decoration: none;
  transition: transform 220ms ease, box-shadow 220ms ease, background 220ms ease;
}

.button::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-120%);
  background: linear-gradient(110deg, transparent, rgba(255, 255, 255, 0.34), transparent);
  transition: transform 520ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button:hover::after {
  transform: translateX(120%);
}

.button.primary {
  color: var(--white);
  background: var(--clay);
  box-shadow: var(--shadow);
  animation: gentlePulse 4.2s ease-in-out infinite;
}

.button.ghost {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.5);
}

.button.light {
  flex: 0 0 auto;
  color: var(--clay-dark);
  background: var(--white);
  box-shadow: var(--shadow);
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.hero-proof span {
  padding: 7px 12px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  color: rgba(255, 255, 255, 0.9);
  font-size: 13px;
}

.section {
  padding: clamp(72px, 10vw, 132px) clamp(20px, 6vw, 82px);
  animation: fadeUp 800ms ease both;
  animation-timeline: view();
  animation-range: entry 0% cover 28%;
}

.section[id] {
  scroll-margin-top: 120px;
}

.intro {
  display: grid;
  grid-template-columns: 0.22fr 0.98fr 1fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}

.intro-copy p,
.program-content p,
.mentor p,
.last-cta p,
.offer p {
  color: var(--muted);
  max-width: 720px;
}

.signal-list {
  display: grid;
  gap: 12px;
}

.signal-list div {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 16px;
  align-items: center;
  min-height: 76px;
  padding: 18px;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 0 12px 34px rgba(38, 50, 74, 0.08);
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.signal-list div:hover {
  transform: translateY(-3px);
  border-color: rgba(168, 95, 80, 0.32);
  box-shadow: 0 20px 42px rgba(168, 95, 80, 0.13);
}

.signal-list strong {
  color: var(--clay);
  font-family: "Shippori Mincho", Georgia, "Times New Roman", serif;
  font-size: 28px;
}

.method {
  position: relative;
  overflow: hidden;
  color: var(--white);
  background: var(--navy);
}

.method::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent, rgba(244, 222, 216, 0.1), transparent),
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 20px);
}

.method > * {
  position: relative;
}

.method-head {
  width: min(880px, 100%);
  margin-bottom: 44px;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: rgba(255, 255, 255, 0.22);
}

.method-grid article {
  min-height: 300px;
  padding: clamp(26px, 4vw, 42px);
  background: var(--navy);
  transition: background 220ms ease, transform 220ms ease;
}

.method-grid article:hover {
  transform: translateY(-4px);
  background: #2e3c58;
}

.method-grid span {
  display: block;
  margin-bottom: 56px;
  color: #d7bd86;
  font-family: "Shippori Mincho", Georgia, "Times New Roman", serif;
  font-size: 15px;
}

.method-grid p {
  color: rgba(255, 255, 255, 0.74);
}

.program,
.mentor {
  display: grid;
  grid-template-columns: minmax(280px, 0.86fr) minmax(0, 1fr);
  gap: clamp(34px, 6vw, 86px);
  align-items: center;
}

.program {
  background: var(--mist);
}

.program-visual img,
.mentor img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  box-shadow: var(--shadow);
  transition: transform 700ms ease, filter 700ms ease;
}

.program-visual,
.mentor {
  overflow: hidden;
}

.program-visual:hover img,
.mentor:hover img {
  transform: scale(1.025);
  filter: saturate(1.06) contrast(1.02);
}

.program-list {
  margin: 32px 0 0;
}

.program-list div {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 20px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.program-list div:last-child {
  border-bottom: 1px solid var(--line);
}

.program-list dt {
  color: var(--clay-dark);
  font-weight: 700;
}

.program-list dd {
  margin: 0;
}

.offer {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  color: var(--white);
  background: var(--sage);
}

.offer::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: min(520px, 62vw);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.72));
  animation: lineGlow 4.8s ease-in-out infinite;
}

.offer > * {
  position: relative;
}

.offer p {
  color: rgba(255, 255, 255, 0.82);
}

.voice-head {
  width: min(920px, 100%);
  margin-bottom: 42px;
}

.voice-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.voice-row article {
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transition: transform 240ms ease, box-shadow 240ms ease;
}

.voice-row article:hover {
  transform: translateY(-5px);
  box-shadow: 0 26px 62px rgba(124, 62, 54, 0.16);
}

.voice-row img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  filter: sepia(0.05) saturate(1.04);
}

.voice-row p {
  margin: 0;
  padding: 24px;
  color: var(--muted);
}

.mentor {
  background: var(--paper);
}

.faq {
  background: #f3ede4;
}

.faq h2 {
  margin-bottom: 34px;
}

details {
  max-width: 920px;
  padding: 0 22px;
  margin: 12px 0;
  background: var(--white);
  border: 1px solid var(--line);
}

summary {
  cursor: pointer;
  padding: 20px 0;
  font-weight: 700;
}

details p {
  margin-top: 0;
  padding-bottom: 22px;
  color: var(--muted);
}

.last-cta {
  position: relative;
  overflow: hidden;
  padding: clamp(82px, 12vw, 150px) clamp(20px, 6vw, 82px);
  color: var(--white);
  background:
    linear-gradient(115deg, rgba(124, 62, 54, 0.96), rgba(38, 50, 74, 0.98)),
    linear-gradient(90deg, var(--blush), transparent);
  text-align: center;
}

.last-cta::before {
  content: "";
  position: absolute;
  top: 34px;
  left: 50%;
  width: min(520px, 72vw);
  height: 1px;
  transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.72), transparent);
}

.last-cta > * {
  position: relative;
}

.last-cta p {
  margin-left: auto;
  margin-right: auto;
  color: rgba(255, 255, 255, 0.8);
}

.last-cta .button {
  margin-top: 30px;
}

.footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 26px clamp(20px, 6vw, 82px);
  color: rgba(255, 255, 255, 0.78);
  background: #171717;
}

.footer p {
  margin: 0;
  color: var(--white);
  font-family: "Shippori Mincho", Georgia, "Times New Roman", serif;
}

.footer div {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer a {
  text-decoration: none;
}

@media (max-width: 920px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    width: 100%;
    justify-content: space-between;
  }

  .intro,
  .program,
  .mentor,
  .method-grid,
  .voice-row {
    grid-template-columns: 1fr;
  }

  .section-label {
    margin-bottom: 0;
  }

  .offer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .brand {
    font-size: 18px;
  }

  nav {
    gap: 8px;
    font-size: 12px;
  }

  .nav-cta {
    padding: 7px 10px;
  }

  .hero {
    min-height: 760px;
  }

  .hero-bg::after {
    background:
      linear-gradient(180deg, rgba(24, 24, 28, 0.18), rgba(24, 24, 28, 0.88)),
      linear-gradient(90deg, rgba(24, 24, 28, 0.58), rgba(24, 24, 28, 0.25));
  }

  h1 {
    font-size: 40px;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .program-list div,
  .signal-list div {
    grid-template-columns: 1fr;
  }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes softShine {
  0%,
  100% {
    opacity: 0.18;
    transform: translateX(-18%);
  }

  50% {
    opacity: 0.36;
    transform: translateX(18%);
  }
}

@keyframes gentlePulse {
  0%,
  100% {
    box-shadow: 0 18px 42px rgba(168, 95, 80, 0.18);
  }

  50% {
    box-shadow: 0 22px 54px rgba(168, 95, 80, 0.32);
  }
}

@keyframes lineGlow {
  0%,
  100% {
    opacity: 0.28;
    transform: translateX(12%);
  }

  50% {
    opacity: 0.84;
    transform: translateX(-4%);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }
}