:root {
  --paper: #ffffff;
  --paper-alt: #f6f5f1;
  --ink: #14181a;
  --ink-soft: #454a47;
  --muted: #767b76;
  --green: #1c3b2e;
  --green-deep: #0f271d;
  --green-tint: #eaf1ec;
  --line: #e2e0d9;
  --line-strong: #cfcdc4;
  --font-display: "Zen Old Mincho", "Noto Serif JP", serif;
  --font-body: "Noto Sans JP", sans-serif;
  --container-w: 1160px;
  --container-w-narrow: 780px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt";
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
dl, dd { margin: 0; }

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: var(--container-w-narrow);
  margin: 0 auto;
  padding: 0 24px;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink);
  white-space: nowrap;
}

.logo span { color: var(--green); }

.nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav a {
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color 0.2s;
  white-space: nowrap;
}

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

.nav-cta {
  padding: 10px 22px;
  border: 1px solid var(--green);
  border-radius: 2px;
  color: var(--green) !important;
}

.nav-cta:hover {
  background: var(--green);
  color: #fff !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--ink);
  margin: 0 auto;
  transition: transform 0.25s, opacity 0.25s;
}

.nav-toggle.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .nav {
    position: absolute;
    top: 76px; left: 0; right: 0;
    background: var(--paper);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    border-bottom: 1px solid var(--line);
  }
  .nav.open { max-height: 480px; }
  .nav a {
    padding: 16px 24px;
    border-bottom: 1px solid var(--line);
  }
  .nav-cta {
    margin: 16px 24px;
    text-align: center;
  }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 15px 34px;
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  border-radius: 2px;
  transition: transform 0.2s, background 0.2s, color 0.2s, border-color 0.2s;
  text-align: center;
}

.btn-primary {
  background: var(--green);
  color: #fff;
  border: 1px solid var(--green);
}

.btn-primary:hover {
  background: var(--green-deep);
  border-color: var(--green-deep);
}

.btn-outline {
  border: 1px solid var(--line-strong);
  color: var(--ink);
}

.btn-outline:hover {
  border-color: var(--green);
  color: var(--green);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* ---------- Section shared ---------- */
section { padding: 128px 0; }
.section-alt { background: var(--paper-alt); }

.section-label {
  font-family: var(--font-body);
  color: var(--green);
  letter-spacing: 0.2em;
  font-size: 0.76rem;
  font-weight: 700;
  margin: 0 0 18px;
  text-align: center;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  line-height: 1.5;
  text-align: center;
  margin: 0 0 24px;
  text-wrap: balance;
}

.section-lead {
  color: var(--ink-soft);
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
  font-size: 1rem;
}

.is-left .section-label,
.is-left .section-title,
.is-left .section-lead {
  text-align: left;
  margin-left: 0;
  margin-right: 0;
}

.eyebrow-rule {
  display: inline-block;
  width: 40px;
  height: 2px;
  background: var(--green);
  margin-bottom: 16px;
}

/* ---------- Hero ---------- */
.hero {
  padding: 172px 0 108px;
  border-bottom: 1px solid var(--line);
}

.hero-eyebrow {
  font-family: var(--font-body);
  color: var(--green);
  letter-spacing: 0.22em;
  font-size: 0.8rem;
  font-weight: 700;
  margin: 0 0 22px;
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 5.4vw, 3.6rem);
  line-height: 1.55;
  margin: 0 0 36px;
  text-wrap: balance;
}

.hero-stat {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.2vw, 2.5rem);
  color: var(--green);
  margin: 0 0 32px;
  font-variant-numeric: tabular-nums;
}

.hero-stat .arrow { color: var(--ink-soft); font-size: 0.7em; }

.hero-copy {
  font-size: 1.05rem;
  font-weight: 500;
  margin: 0 0 44px;
  color: var(--ink-soft);
  max-width: 480px;
}

.hero-photo {
  margin: 56px 0 0;
  max-width: 760px;
}

.hero-photo img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 2px;
}

.hero-photo figcaption {
  margin-top: 12px;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.about-card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 40px 32px;
}

.about-num {
  display: block;
  font-family: var(--font-display);
  color: var(--green);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 18px;
}

.about-card h3 {
  margin: 0 0 12px;
  font-size: 1.08rem;
  font-weight: 700;
}

.about-card p {
  color: var(--muted);
  margin: 0;
  font-size: 0.92rem;
}

@media (max-width: 780px) {
  .about-grid { grid-template-columns: 1fr; }
}

/* ---------- Real Data ---------- */
.stat-hero {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(20px, 5vw, 56px);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.stat-block { text-align: center; }

.stat-value {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
  line-height: 1.05;
}

.stat-value.is-muted {
  color: var(--muted);
  font-size: clamp(1.9rem, 5.5vw, 3.2rem);
}

.stat-value.is-strong {
  color: var(--ink);
  font-size: clamp(2.6rem, 8.5vw, 5.4rem);
}

.stat-date {
  display: block;
  margin-top: 10px;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.stat-arrow {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--line-strong);
}

.stat-badge {
  display: block;
  text-align: center;
  font-family: var(--font-body);
  font-weight: 700;
  color: var(--green);
  font-size: 1rem;
  letter-spacing: 0.05em;
  margin: 0 auto 72px;
}

@media (max-width: 640px) {
  .stat-arrow { transform: rotate(90deg); }
}

.chart {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: clamp(40px, 8vw, 96px);
  max-width: 460px;
  margin: 0 auto;
  height: 220px;
  border-bottom: 1px solid var(--ink);
}

.chart-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  width: 88px;
}

.chart-fill {
  width: 100%;
  margin-top: auto;
  border-radius: 1px 1px 0 0;
}

.chart-fill.is-muted { background: var(--line-strong); }
.chart-fill.is-accent { background: var(--green); }

.chart-caption {
  text-align: center;
  color: var(--muted);
  font-size: 0.82rem;
  margin: 20px auto 0;
  max-width: 480px;
}

.data-photo {
  margin: 64px auto 0;
  max-width: 420px;
  text-align: center;
}

.data-photo img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 2px;
}

.data-photo figcaption {
  margin-top: 16px;
  font-family: var(--font-display);
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.data-note {
  text-align: center;
  max-width: 560px;
  margin: 88px auto 40px;
  padding-top: 48px;
  border-top: 1px solid var(--line-strong);
}

.data-note-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  margin: 0 0 20px;
  text-wrap: balance;
}

.data-note-text {
  color: var(--ink-soft);
  font-size: 0.96rem;
  margin: 0;
}

/* ---------- Concept (From Feeling to Data) ---------- */
.concept {
  background: var(--green);
  color: #fff;
  text-align: center;
  padding: 176px 0;
}

.concept-eyebrow {
  font-family: var(--font-body);
  color: rgba(255, 255, 255, 0.68);
  letter-spacing: 0.22em;
  font-size: 0.78rem;
  font-weight: 700;
  margin: 0 0 28px;
}

.concept-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.9rem, 5vw, 3rem);
  line-height: 1.55;
  margin: 0;
  color: #fff;
  text-wrap: balance;
}

@media (max-width: 600px) {
  .concept { padding: 120px 0; }
  .data-note { margin-top: 64px; }
}

/* ---------- Changed ---------- */
.changed-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 20px;
}

.changed-card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 32px 26px;
}

.changed-num {
  display: block;
  font-family: var(--font-display);
  color: var(--green);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.changed-card h3 {
  margin: 0 0 10px;
  font-size: 1.02rem;
  font-weight: 700;
}

.changed-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

/* ---------- Vol.1 ---------- */
.vol1-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: clamp(40px, 6vw, 88px);
  align-items: center;
}

.vol1-cover {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  border: 1px solid var(--line);
  overflow: hidden;
  justify-self: stretch;
}

.vol1-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.vol1-cover-placeholder[hidden] {
  display: none;
}

.vol1-cover-placeholder {
  position: absolute;
  inset: 0;
  border: 1px dashed var(--line-strong);
  background: var(--green-tint);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 24px;
  text-align: center;
}

.vol1-cover-eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--green);
  font-weight: 700;
}

.vol1-cover-num {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--ink);
}

.vol1-cover-note {
  font-size: 0.76rem;
  color: var(--muted);
}

.vol1-subtitle {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.6vw, 1.5rem);
  font-weight: 600;
  color: var(--green);
  margin: 0 0 28px;
}

.vol1-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 0 0 36px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.vol1-list li {
  padding-left: 22px;
  position: relative;
  font-size: 0.94rem;
  color: var(--ink-soft);
}

.vol1-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 6px; height: 6px;
  background: var(--green);
}

.vol1-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  border: 1px solid var(--line-strong);
  padding: 6px 12px;
}

@media (max-width: 780px) {
  .vol1-grid { grid-template-columns: 1fr; }
  .vol1-cover { max-width: 240px; margin: 0 auto; }
}

/* ---------- Real Business ---------- */
.business-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: clamp(40px, 6vw, 88px);
  align-items: start;
}

.business-photo {
  margin: 32px 0;
}

.business-photo img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 2px;
}

.pull-quote {
  margin: 32px 0 0;
  padding: 28px 0 0;
  border-top: 1px solid var(--line);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.15rem, 2.6vw, 1.5rem);
  line-height: 1.7;
  color: var(--green);
}

.business-card {
  background: var(--green);
  color: #fff;
  padding: 40px 32px;
}

.business-facts {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.business-facts > div {
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.business-facts > div:last-child { border-bottom: none; padding-bottom: 0; }

.business-facts dt {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: rgba(255, 255, 255, 0.62);
  margin-bottom: 6px;
}

.business-facts dd {
  font-size: 1rem;
  font-weight: 600;
}

@media (max-width: 860px) {
  .business-grid { grid-template-columns: 1fr; }
}

/* ---------- Contents ---------- */
.contents-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
}

.contents-card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.contents-num {
  font-size: 0.74rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.contents-label {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
}

.contents-note {
  color: var(--muted);
  font-size: 0.8rem;
  text-align: center;
  margin: 28px 0 0;
}

/* ---------- For Trainers ---------- */
.check-list {
  max-width: var(--container-w-narrow);
  margin: 0 auto;
  border-top: 1px solid var(--line);
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 1rem;
}

.check-list svg {
  flex: none;
  width: 20px; height: 20px;
  margin-top: 3px;
  color: var(--green);
}

/* ---------- Profile ---------- */
.profile-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(36px, 6vw, 72px);
  align-items: start;
}

.profile-photo {
  aspect-ratio: 1 / 1;
  background: var(--paper-alt);
  border: 1px dashed var(--line-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-align: center;
  padding: 16px;
}

.profile-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 8px;
}

.profile-role {
  color: var(--green);
  font-weight: 600;
  font-size: 0.92rem;
  margin: 0 0 24px;
}

.profile-bio {
  color: var(--ink-soft);
  font-size: 0.96rem;
  max-width: 620px;
}

@media (max-width: 700px) {
  .profile-grid { grid-template-columns: 1fr; }
  .profile-photo { width: 140px; }
}

/* ---------- Final CTA ---------- */
.final-cta {
  background: var(--ink);
  color: #fff;
  text-align: center;
}

.final-cta .section-title {
  color: #fff;
}

.final-cta-vol {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.7);
  margin: 0 0 6px;
}

.final-cta-sub {
  font-size: 1.3rem;
  font-weight: 600;
  font-family: var(--font-display);
  color: #fff;
  margin: 0 0 44px;
}

.final-cta .btn-primary {
  background: #fff;
  color: var(--ink);
  border-color: #fff;
}

.final-cta .btn-primary:hover {
  background: var(--green-tint);
}

.final-cta-note {
  margin: 16px 0 0;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--paper);
  border-top: 1px solid var(--line);
  padding: 56px 0 40px;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 24px;
}

.footer-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  margin: 0 0 10px;
}

.footer-logo span { color: var(--green); }

.footer-tagline {
  color: var(--muted);
  font-size: 0.88rem;
  max-width: 320px;
  margin: 0;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
}

.footer-nav a {
  font-size: 0.86rem;
  color: var(--ink-soft);
}

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

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  color: var(--muted);
  font-size: 0.78rem;
}

@media (max-width: 600px) {
  section { padding: 88px 0; }
  .hero { padding: 148px 0 80px; }
}

/* ---------- Vol.1 Reader ---------- */
.vol1-reader-top {
  max-width: 1080px;
  margin: 0 auto;
  padding: 96px 16px 16px;
}

.vol1-back-link {
  display: inline-block;
  font-size: 0.84rem;
  color: var(--ink-soft);
}

.vol1-back-link:hover { color: var(--green); }

.vol1-reader-pages {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.vol1-reader-pages img {
  width: 100%;
  height: auto;
  display: block;
}

@media (min-width: 700px) {
  .vol1-reader-pages { padding: 0 32px; gap: 12px; }
}

.vol1-next {
  text-align: center;
  padding: 96px 0;
  border-top: 1px solid var(--line);
}

.vol1-next-label {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: var(--muted);
  font-weight: 700;
  line-height: 1.8;
  margin: 0 0 32px;
}

.vol1-next-vol {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  font-weight: 700;
  color: var(--green);
  margin: 0;
}

.vol1-next-status {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: var(--muted);
  font-weight: 700;
  margin: 8px 0 32px;
}

.vol1-next-text {
  color: var(--ink-soft);
  font-size: 0.98rem;
  max-width: 480px;
  margin: 0 auto 40px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}