:root {
    --green: #7BAE3A;
    --green-deep: #5e8a2a;
    --ink: #1F2D1C;
    --ink-soft: #4a5648;
    --ink-mute: #7a8478;
    --cream: #F5F2E8;
    --cream-deep: #ECE6D5;
    --line: #d9d3c2;
    --white: #ffffff;
    --blue-deep: #162F89;
    --teal: #109D93;
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
    color: var(--ink);
    background: var(--white);
    font-weight: 400;
    line-height: 1.9;
    letter-spacing: 0.04em;
    -webkit-font-smoothing: antialiased;
  }
  .mincho { font-family: "Noto Serif JP", "Hiragino Mincho ProN", serif; }
  .latin { font-family: "Cormorant Garamond", serif; letter-spacing: 0.08em; }

  /* ============ HEADER ============ */
  .top-bar {
    height: 110px;
    background: var(--green);
    width: 100%;
  }
  header.site-header {
    position: sticky;
    top: 0;
    background: var(--white);
    z-index: 50;
    border-bottom: 1px solid #eee;
  }
  .header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 22px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
  }
  .logo {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
  }
  .logo-mark {
    width: 56px;
    height: 56px;
    position: relative;
  }
  .logo-text-jp {
    font-family: "Noto Serif JP", serif;
    font-size: 28px;
    font-weight: 500;
    color: var(--ink);
    letter-spacing: 0.18em;
    line-height: 1.1;
  }
  .logo-text-en {
    font-family: "Cormorant Garamond", serif;
    font-size: 10px;
    color: var(--ink-mute);
    letter-spacing: 0.18em;
    margin-top: 4px;
  }
  .logo-img {
    height: 52px;
    width: auto;
    display: block;
  }
  nav.main-nav ul {
    display: flex;
    gap: 38px;
    list-style: none;
  }
  nav.main-nav a {
    color: var(--ink);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.1em;
    padding: 6px 0;
    border-bottom: 2px solid transparent;
    transition: border-color .25s, color .25s;
  }
  nav.main-nav a:hover {
    color: var(--green);
    border-bottom-color: var(--green);
  }

  /* ============ HERO ============ */
  .hero {
    position: relative;
    min-height: 720px;
    background: var(--cream);
    overflow: hidden;
    display: flex;
    align-items: center;
  }
  .hero-bg {
    position: absolute;
    inset: 0;
    opacity: 0.45;
  }
  .hero-bg.has-canvas { opacity: 1; }
  .hero-bg svg { width: 100%; height: 100%; }
  .hero-inner {
    position: relative;
    max-width: 1280px;
    margin: 0 auto;
    padding: 120px 48px;
    width: 100%;
  }
  .hero-eyebrow {
    display: flex;
    align-items: center;
    gap: 16px;
    color: var(--green-deep);
    font-family: "Cormorant Garamond", serif;
    font-size: 14px;
    letter-spacing: 0.4em;
    margin-bottom: 36px;
    text-transform: uppercase;
  }
  .hero-eyebrow::before {
    content: "";
    width: 48px;
    height: 1px;
    background: var(--green-deep);
  }
  .hero h1 {
    font-family: "Noto Serif JP", serif;
    font-weight: 300;
    font-size: clamp(36px, 5vw, 64px);
    line-height: 1.5;
    color: var(--ink);
    letter-spacing: 0.06em;
    margin-bottom: 48px;
    max-width: 1100px;
  }
  .hero h1 .accent {
    color: var(--green-deep);
    font-weight: 400;
  }
  .hero h1 .big {
    font-size: 1.4em;
    display: block;
    margin-bottom: 0.3em;
    font-weight: 400;
  }
  .hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 18px;
    background: var(--green);
    color: white;
    padding: 22px 48px;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-decoration: none;
    transition: background .25s, transform .25s;
  }
  .hero-cta:hover { background: var(--green-deep); transform: translateY(-2px); }
  .hero-cta .arrow {
    width: 28px; height: 1px; background: white; position: relative;
  }
  .hero-cta .arrow::after {
    content: "";
    position: absolute; right: 0; top: -3px;
    width: 8px; height: 8px;
    border-top: 1px solid white;
    border-right: 1px solid white;
    transform: rotate(45deg);
  }
  .hero-meta {
    position: absolute;
    bottom: 36px;
    right: 48px;
    font-family: "Cormorant Garamond", serif;
    font-size: 12px;
    letter-spacing: 0.3em;
    color: var(--ink-mute);
    writing-mode: vertical-rl;
    text-orientation: mixed;
  }

  /* ============ SECTION COMMON ============ */
  section.block {
    padding: 140px 48px;
    position: relative;
  }
  .container {
    max-width: 1180px;
    margin: 0 auto;
  }
  .container-narrow {
    max-width: 820px;
    margin: 0 auto;
  }
  .section-label {
    display: flex;
    align-items: baseline;
    gap: 18px;
    margin-bottom: 28px;
    color: var(--green-deep);
  }
  .section-label .num {
    font-family: "Cormorant Garamond", serif;
    font-size: 18px;
    letter-spacing: 0.2em;
  }
  .section-label .label {
    font-family: "Cormorant Garamond", serif;
    font-size: 13px;
    letter-spacing: 0.4em;
    color: var(--ink-mute);
    text-transform: uppercase;
  }
  .section-label .divider {
    flex: 1;
    height: 1px;
    background: var(--line);
    max-width: 200px;
  }
  h2.section-title {
    font-family: "Noto Serif JP", serif;
    font-weight: 400;
    font-size: clamp(28px, 3.4vw, 44px);
    line-height: 1.55;
    letter-spacing: 0.06em;
    color: var(--ink);
    margin-bottom: 56px;
  }
  h2.section-title .bar {
    display: inline-block;
    width: 6px;
    height: 1em;
    background: var(--green);
    margin-right: 18px;
    transform: translateY(0.1em);
  }
  .lede {
    font-size: 17px;
    line-height: 2.1;
    color: var(--ink-soft);
    letter-spacing: 0.06em;
  }
  .lede + .lede { margin-top: 1.5em; }

  /* ============ SECTION 1 ============ */
  .s-concept {
    background: var(--white);
    text-align: center;
  }
  .s-concept .section-label { justify-content: center; }
  .s-concept .section-label .divider { display: none; }
  .s-concept h2 { text-align: center; }
  .s-concept .lede { text-align: left; }
  .s-concept .ornament {
    width: 1px;
    height: 80px;
    background: var(--green);
    margin: 64px auto 0;
    position: relative;
  }
  .s-concept .ornament::before,
  .s-concept .ornament::after {
    content: "";
    position: absolute;
    left: 50%;
    width: 6px; height: 6px;
    background: var(--green);
    border-radius: 50%;
    transform: translateX(-50%);
  }
  .s-concept .ornament::before { top: 0; }
  .s-concept .ornament::after { bottom: 0; }

  /* ============ FOUNDER ============ */
  .s-founder {
    background: var(--white);
    border-top: 1px solid var(--line);
  }
  .founder-grid {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 80px;
    align-items: start;
  }

  /* Photo column */
  .founder-photo-wrap { position: relative; }
  .founder-photo-inner {
    position: relative;
    padding: 0 18px 18px 0;
  }
  .founder-photo-shadow {
    position: absolute;
    right: 0; bottom: 0;
    width: calc(100% - 18px);
    height: calc(100% - 18px);
    background: linear-gradient(135deg, var(--blue-deep) 0%, var(--teal) 100%);
    opacity: 0.13;
  }
  .founder-photo-frame {
    position: relative;
    z-index: 1;
    aspect-ratio: 3 / 4;
    overflow: hidden;
  }
  .founder-photo-frame::before {
    content: "";
    position: absolute;
    top: 0; left: 0;
    width: 44px; height: 44px;
    border-top: 2px solid var(--blue-deep);
    border-left: 2px solid var(--blue-deep);
    z-index: 2;
    pointer-events: none;
  }
  .founder-photo {
    display: block;
    width: 100%; height: 100%;
    object-fit: cover;
    object-position: top center;
    position: relative;
    z-index: 1;
  }
  .founder-photo-placeholder {
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, #eae6dc 0%, #d9d4c9 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 0;
  }
  .founder-photo-placeholder span {
    font-family: "Cormorant Garamond", serif;
    font-size: 13px;
    color: rgba(31,45,28,0.3);
    letter-spacing: 0.28em;
  }
  .founder-photo-caption {
    margin-top: 16px;
    font-family: "Noto Serif JP", serif;
    font-size: 13px;
    letter-spacing: 0.14em;
    color: var(--ink-mute);
  }

  /* Body column */
  .founder-eyebrow {
    font-family: "Cormorant Garamond", serif;
    font-size: 12px;
    letter-spacing: 0.5em;
    color: var(--teal);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 14px;
  }
  .founder-eyebrow::before {
    content: "";
    width: 36px; height: 1px;
    background: linear-gradient(to right, var(--blue-deep), var(--teal));
    flex-shrink: 0;
  }
  .founder-title-block { margin-bottom: 36px; }
  .founder-role {
    font-size: 12.5px;
    color: var(--ink-mute);
    letter-spacing: 0.1em;
    line-height: 1.9;
    margin-bottom: 10px;
  }
  .founder-name {
    font-family: "Noto Serif JP", serif;
    font-weight: 500;
    font-size: clamp(28px, 3vw, 42px);
    letter-spacing: 0.14em;
    color: var(--ink);
    line-height: 1.2;
    display: flex;
    align-items: baseline;
    gap: 18px;
    flex-wrap: wrap;
  }
  .founder-name-en {
    font-family: "Cormorant Garamond", serif;
    font-weight: 300;
    font-size: 0.46em;
    letter-spacing: 0.22em;
    color: var(--ink-mute);
  }
  .founder-quote {
    position: relative;
    font-family: "Noto Serif JP", serif;
    font-weight: 300;
    font-size: clamp(17px, 1.8vw, 22px);
    line-height: 1.95;
    color: var(--ink);
    letter-spacing: 0.06em;
    padding: 8px 0 8px 28px;
    margin: 0 0 44px;
  }
  .founder-quote::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--blue-deep), var(--teal));
    border-radius: 2px;
  }
  .founder-story p {
    font-size: 15.5px;
    line-height: 2.1;
    color: var(--ink-soft);
    letter-spacing: 0.05em;
  }
  .founder-story p + p { margin-top: 1.4em; }

  /* Stats row */
  .founder-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin-top: 52px;
    padding-top: 44px;
    border-top: 1px solid var(--line);
  }
  .stat-item {
    padding: 0 28px;
    border-right: 1px solid var(--line);
  }
  .stat-item:first-child { padding-left: 0; }
  .stat-item:last-child { border-right: none; padding-right: 0; }
  .stat-num {
    display: block;
    font-family: "Cormorant Garamond", serif;
    font-size: clamp(26px, 2.8vw, 38px);
    font-weight: 400;
    line-height: 1.1;
    background: linear-gradient(135deg, var(--blue-deep) 0%, var(--teal) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
  }
  .stat-unit {
    font-family: "Noto Sans JP", sans-serif;
    font-size: 0.42em;
    letter-spacing: 0.05em;
  }
  .stat-label {
    display: block;
    font-size: 12.5px;
    color: var(--ink-mute);
    letter-spacing: 0.08em;
    line-height: 1.7;
  }
  .stat-label small {
    font-size: 10.5px;
    display: block;
    margin-top: 2px;
  }

  /* ============ SECTION 2 - 3 PILLARS ============ */
  .s-evidence {
    background: var(--cream);
  }
  .pillars {
    display: grid;
    gap: 80px;
    margin-top: 80px;
  }
  .pillar {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 64px;
    align-items: start;
    padding-bottom: 80px;
    border-bottom: 1px solid var(--line);
  }
  .pillar:last-child { border-bottom: none; padding-bottom: 0; }
  .pillar-visual {
    aspect-ratio: 1 / 1;
    background: var(--white);
    border: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
  }
  .pillar-visual svg { width: 100%; height: 100%; }
  .pillar-head {
    display: flex;
    align-items: baseline;
    gap: 24px;
    margin-bottom: 24px;
  }
  .pillar-num {
    font-family: "Cormorant Garamond", serif;
    font-size: 64px;
    font-weight: 300;
    color: var(--green);
    line-height: 1;
  }
  .pillar-title {
    font-family: "Noto Serif JP", serif;
    font-weight: 500;
    font-size: 22px;
    line-height: 1.6;
    color: var(--ink);
    letter-spacing: 0.04em;
  }
  .pillar-title .en {
    display: block;
    font-family: "Cormorant Garamond", serif;
    font-size: 14px;
    color: var(--ink-mute);
    letter-spacing: 0.15em;
    margin-top: 8px;
    font-weight: 400;
  }
  .pillar-body {
    font-size: 16px;
    line-height: 2.05;
    color: var(--ink-soft);
  }
  .evidence-intro {
    margin-bottom: 0;
    font-size: 17px;
    line-height: 2.1;
    color: var(--ink-soft);
  }

  /* ============ SECTION 3 - LIFE SYSTEM ============ */
  .s-life {
    background: var(--ink);
    color: #d8dcd5;
    overflow: hidden;
    position: relative;
  }
  .s-life::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
      radial-gradient(ellipse at 20% 30%, rgba(123,174,58,0.12), transparent 50%),
      radial-gradient(ellipse at 80% 70%, rgba(123,174,58,0.08), transparent 55%);
    pointer-events: none;
  }
  .s-life .section-label { color: #a8c87a; }
  .s-life .section-label .label { color: #8a9686; }
  .s-life .section-label .divider { background: #3a4a37; }
  .s-life h2.section-title { color: #f5f2e8; }
  .s-life .lede { color: #c4cabd; }
  .life-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
    align-items: start;
    position: relative;
  }
  .life-visual {
    aspect-ratio: 3 / 4;
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.08);
    position: relative;
    overflow: hidden;
  }
  .life-visual .placeholder-label {
    position: absolute;
    bottom: 20px; left: 20px;
    font-family: "Courier New", monospace;
    font-size: 11px;
    color: rgba(255,255,255,0.5);
    letter-spacing: 0.1em;
    z-index: 2;
  }
  .life-visual .stripes {
    position: absolute;
    inset: 0;
    background-image: repeating-linear-gradient(
      135deg,
      transparent 0 14px,
      rgba(123,174,58,0.06) 14px 15px
    );
  }
  .life-visual svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
  }
  .life-body p {
    font-size: 16.5px;
    line-height: 2.15;
    color: #c4cabd;
    margin-bottom: 1.5em;
  }
  .life-body p:last-child { margin-bottom: 0; }
  .life-pullquote {
    font-family: "Noto Serif JP", serif;
    font-weight: 300;
    font-size: 22px;
    line-height: 1.9;
    color: #f5f2e8;
    border-left: 2px solid var(--green);
    padding: 4px 0 4px 24px;
    margin: 32px 0;
  }

  /* ============ SECTION 4 - MECHANISM + SYMPTOMS ============ */
  .s-mechanism {
    background: var(--white);
  }
  .s-mechanism .lede { margin-bottom: 1.6em; }
  .symptoms-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-top: 80px;
  }
  .symptom-card {
    background: var(--cream);
    padding: 56px 48px;
    position: relative;
  }
  .symptom-card .corner {
    position: absolute;
    top: 0; left: 0;
    width: 32px; height: 32px;
    border-top: 2px solid var(--green);
    border-left: 2px solid var(--green);
  }
  .symptom-card h4 {
    font-family: "Noto Serif JP", serif;
    font-weight: 500;
    font-size: 22px;
    color: var(--ink);
    letter-spacing: 0.06em;
    margin-bottom: 8px;
  }
  .symptom-card .en-cap {
    font-family: "Cormorant Garamond", serif;
    font-size: 13px;
    color: var(--ink-mute);
    letter-spacing: 0.25em;
    margin-bottom: 32px;
  }
  .symptom-card ul {
    list-style: none;
  }
  .symptom-card li {
    padding: 14px 0 14px 24px;
    border-bottom: 1px solid var(--line);
    font-size: 15.5px;
    color: var(--ink-soft);
    position: relative;
    letter-spacing: 0.06em;
  }
  .symptom-card li:last-child { border-bottom: none; }
  .symptom-card li::before {
    content: "";
    position: absolute;
    left: 0; top: 50%;
    width: 8px; height: 1px;
    background: var(--green);
  }
  .symptom-card .heading-row {
    font-size: 15px;
    color: var(--ink-mute);
    font-weight: 500;
    margin-bottom: 12px;
    letter-spacing: 0.08em;
  }
  .closing-statement {
    margin-top: 96px;
    text-align: center;
    padding: 64px 32px;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }
  .closing-statement p {
    font-family: "Noto Serif JP", serif;
    font-weight: 400;
    font-size: clamp(18px, 1.8vw, 22px);
    line-height: 2.1;
    color: var(--ink);
    letter-spacing: 0.08em;
  }
  .closing-statement .accent {
    color: var(--green-deep);
    font-weight: 500;
  }

  /* ============ VOICE / TESTIMONIALS ============ */
  .s-voice {
    background: var(--cream);
  }
  .voice-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-top: 64px;
  }
  .voice-embed {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #000;
  }
  .voice-embed iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: none;
  }

  /* ============ SECTION 5 - CLOSING ============ */
  .s-closing {
    background: var(--cream);
    text-align: center;
    padding: 160px 48px;
  }
  .s-closing .section-label { justify-content: center; }
  .s-closing .section-label .divider { display: none; }
  .closing-poem {
    font-family: "Noto Serif JP", serif;
    font-weight: 300;
    font-size: clamp(20px, 2.2vw, 28px);
    line-height: 2.2;
    color: var(--ink);
    letter-spacing: 0.08em;
    margin: 60px 0 80px;
  }
  .closing-poem .green-line {
    color: var(--green-deep);
    font-weight: 500;
    font-size: 1.15em;
    display: inline-block;
    padding: 0.3em 0;
    border-top: 1px solid var(--green);
    border-bottom: 1px solid var(--green);
    margin: 0.4em 0;
  }
  .closing-body {
    max-width: 720px;
    margin: 0 auto 80px;
    text-align: left;
    font-size: 16.5px;
    line-height: 2.15;
    color: var(--ink-soft);
  }
  .closing-body p { margin-bottom: 1.4em; }
  .final-cta {
    display: inline-flex;
    align-items: center;
    gap: 24px;
    background: var(--ink);
    color: white;
    padding: 28px 64px;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 0.16em;
    text-decoration: none;
    transition: background .3s;
  }
  .final-cta:hover { background: var(--green-deep); }
  .final-cta .arrow {
    width: 32px; height: 1px; background: white; position: relative;
  }
  .final-cta .arrow::after {
    content: "";
    position: absolute; right: 0; top: -3px;
    width: 8px; height: 8px;
    border-top: 1px solid white;
    border-right: 1px solid white;
    transform: rotate(45deg);
  }

  /* ============ FOOTER ============ */
  footer {
    background: var(--ink);
    color: #b8bdb2;
    padding: 80px 48px 40px;
  }
  .footer-inner {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 64px;
    padding-bottom: 60px;
    border-bottom: 1px solid #2e3a2b;
  }
  .footer-logo .jp {
    font-family: "Noto Serif JP", serif;
    font-size: 24px;
    color: white;
    letter-spacing: 0.16em;
    margin-bottom: 6px;
  }
  .footer-logo .en {
    font-family: "Cormorant Garamond", serif;
    font-size: 11px;
    color: #8a9686;
    letter-spacing: 0.2em;
    margin-bottom: 24px;
  }
  .footer-logo p {
    font-size: 13px;
    line-height: 1.9;
    color: #8a9686;
  }
  .footer-col h5 {
    font-family: "Cormorant Garamond", serif;
    font-size: 13px;
    color: #a8c87a;
    letter-spacing: 0.3em;
    margin-bottom: 24px;
    text-transform: uppercase;
  }
  .footer-col ul { list-style: none; }
  .footer-col li {
    padding: 8px 0;
    font-size: 14px;
  }
  .footer-col a {
    color: #b8bdb2;
    text-decoration: none;
    transition: color .2s;
  }
  .footer-col a:hover { color: white; }
  .footer-bottom {
    max-width: 1280px;
    margin: 0 auto;
    padding-top: 32px;
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: #6a7367;
    font-family: "Cormorant Garamond", serif;
    letter-spacing: 0.2em;
  }

  /* ── Section 3: Life rings + orb + waves ── */
  @keyframes ring-breathe {
    0%, 100% { opacity: 0.12; }
    50%       { opacity: 0.42; }
  }
  @keyframes orb-pulse {
    0%, 100% { opacity: 0.45; transform: scale(1); }
    50%       { opacity: 0.9;  transform: scale(1.18); }
  }
  @keyframes wave-float {
    0%, 100% { transform: translateY(0);   }
    50%       { transform: translateY(-7px); }
  }
  #life-rings circle:nth-child(1) { animation: ring-breathe 4s ease-in-out infinite 0.0s; }
  #life-rings circle:nth-child(2) { animation: ring-breathe 4s ease-in-out infinite 0.4s; }
  #life-rings circle:nth-child(3) { animation: ring-breathe 4s ease-in-out infinite 0.8s; }
  #life-rings circle:nth-child(4) { animation: ring-breathe 4s ease-in-out infinite 1.2s; }
  #life-rings circle:nth-child(5) { animation: ring-breathe 4s ease-in-out infinite 1.6s; }
  #life-orb {
    animation: orb-pulse 3s ease-in-out infinite;
    transform-box: fill-box;
    transform-origin: center;
  }
  #life-waves { animation: wave-float 6s ease-in-out infinite; }

  /* ── Section 4: Symptom cards ── */
  .symptom-card { transition: transform 0.35s ease, box-shadow 0.35s ease; }
  .symptom-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(31,45,28,0.07);
  }
  .symptom-card.s4-init li {
    opacity: 0;
    transform: translateX(-12px);
    transition: opacity 0.4s ease, transform 0.4s ease;
  }
  .symptom-card.s4-revealed li            { opacity: 1; transform: translateX(0); }
  .symptom-card.s4-revealed li:nth-child(1) { transition-delay: 0.04s; }
  .symptom-card.s4-revealed li:nth-child(2) { transition-delay: 0.11s; }
  .symptom-card.s4-revealed li:nth-child(3) { transition-delay: 0.18s; }
  .symptom-card.s4-revealed li:nth-child(4) { transition-delay: 0.25s; }
  .symptom-card.s4-revealed li:nth-child(5) { transition-delay: 0.32s; }
  .symptom-card.s4-revealed li:nth-child(6) { transition-delay: 0.39s; }

  /* ============ ANIMATIONS ============ */
  .fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 1s ease, transform 1s ease;
  }
  .fade-in.in {
    opacity: 1;
    transform: translateY(0);
  }

  /* ============ MOBILE NAV ============ */
  .nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    position: relative;
    flex-shrink: 0;
    z-index: 60;
  }
  .nav-toggle span {
    position: absolute;
    left: 10px;
    width: 24px;
    height: 1.5px;
    background: var(--ink);
    transition: transform .3s, opacity .3s, top .3s;
  }
  .nav-toggle span:nth-child(1) { top: 16px; }
  .nav-toggle span:nth-child(2) { top: 22px; }
  .nav-toggle span:nth-child(3) { top: 28px; }
  .nav-toggle.open span:nth-child(1) { top: 22px; transform: rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { top: 22px; transform: rotate(-45deg); }

  /* ============ TABLET ============ */
  @media (max-width: 960px) {
    .header-inner { padding: 18px 28px; }
    .logo-text-jp { font-size: 22px; }
    .logo-text-en { font-size: 9px; }
    .logo-mark { width: 44px; height: 44px; }
    .logo-img { height: 42px; }
    nav.main-nav ul { gap: 20px; }
    nav.main-nav a { font-size: 13px; }
    .top-bar { height: 60px; }
    section.block { padding: 80px 28px; }
    .hero { min-height: 540px; }
    .hero-inner { padding: 80px 28px; }
    .hero-meta { display: none; }
    .pillar { grid-template-columns: 1fr; gap: 32px; }
    .pillar-visual { max-width: 200px; }
    .life-grid { grid-template-columns: 1fr; gap: 48px; }
    .symptoms-grid { grid-template-columns: 1fr; }
    /* Voice */
    .voice-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-inner { grid-template-columns: 1fr; gap: 40px; }
    .footer-bottom { flex-direction: column; gap: 12px; }
    /* Founder */
    .founder-grid { grid-template-columns: 1fr; gap: 48px; }
    .founder-photo-inner { max-width: 300px; }
  }

  /* ============ SMARTPHONE (390px iPhone) ============ */
  @media (max-width: 720px) {
    /* Header */
    .top-bar { height: 36px; }
    .header-inner {
      padding: 12px 20px;
      gap: 12px;
    }
    .logo { gap: 10px; }
    .logo-mark { width: 36px; height: 36px; }
    .logo-text-jp { font-size: 17px; letter-spacing: 0.12em; }
    .logo-text-en { font-size: 7.5px; letter-spacing: 0.12em; margin-top: 3px; }
    .logo-img { height: 32px; }

    .nav-toggle { display: block; }
    nav.main-nav {
      position: fixed;
      top: 0; left: 0; right: 0;
      background: white;
      padding: 100px 32px 48px;
      transform: translateY(-100%);
      transition: transform .4s ease;
      box-shadow: 0 20px 40px rgba(0,0,0,0.06);
      max-height: 100vh;
      overflow-y: auto;
      z-index: 55;
    }
    nav.main-nav.open { transform: translateY(0); }
    nav.main-nav ul {
      flex-direction: column;
      gap: 0;
    }
    nav.main-nav li {
      border-bottom: 1px solid var(--line);
    }
    nav.main-nav a {
      display: block;
      padding: 20px 0;
      font-size: 15px;
      letter-spacing: 0.12em;
    }

    /* Hero */
    .hero { min-height: auto; }
    .hero-inner { padding: 64px 24px 80px; }
    .hero-eyebrow {
      font-size: 11px;
      letter-spacing: 0.3em;
      margin-bottom: 24px;
      gap: 12px;
    }
    .hero-eyebrow::before { width: 28px; }
    .hero h1 {
      font-size: 22px;
      line-height: 1.7;
      margin-bottom: 36px;
      letter-spacing: 0.04em;
    }
    .hero h1 .big {
      font-size: 1.35em;
      margin-bottom: 0.5em;
      line-height: 1.5;
    }
    .hero-cta {
      padding: 18px 24px;
      font-size: 13px;
      letter-spacing: 0.06em;
      width: 100%;
      justify-content: space-between;
    }

    /* Section common */
    section.block { padding: 72px 24px; }
    .section-label { margin-bottom: 20px; gap: 12px; flex-wrap: wrap; }
    .section-label .num { font-size: 15px; }
    .section-label .label { font-size: 11px; letter-spacing: 0.3em; }
    .section-label .divider { max-width: 60px; }
    h2.section-title {
      font-size: 24px;
      line-height: 1.6;
      margin-bottom: 36px;
      letter-spacing: 0.04em;
    }
    h2.section-title .bar {
      width: 4px;
      margin-right: 12px;
    }
    h2.section-title br { display: none; }
    .lede { font-size: 15px; line-height: 1.95; }

    /* Section 1 - concept */
    .s-concept .ornament { height: 60px; margin-top: 48px; }

    /* Section 2 - pillars */
    .pillars { gap: 56px; margin-top: 56px; }
    .pillar {
      gap: 28px;
      padding-bottom: 56px;
    }
    .pillar-visual {
      width: 140px;
      max-width: 140px;
      margin: 0 auto;
      padding: 18px;
    }
    .pillar-head {
      gap: 16px;
      margin-bottom: 18px;
      align-items: center;
    }
    .pillar-num { font-size: 44px; }
    .pillar-title { font-size: 17px; line-height: 1.55; }
    .pillar-title .en { font-size: 11px; margin-top: 4px; }
    .pillar-body { font-size: 14.5px; line-height: 1.95; }
    .evidence-intro { font-size: 15px; line-height: 1.95; }
    .evidence-intro br { display: none; }

    /* Section 3 - life */
    .life-grid { gap: 32px; }
    .life-visual { aspect-ratio: 4 / 3; }
    .life-visual .placeholder-label { font-size: 10px; bottom: 14px; left: 14px; }
    .life-body p { font-size: 14.5px; line-height: 1.95; margin-bottom: 1.2em; }
    .life-body p br { display: none; }
    .life-pullquote {
      font-size: 16px;
      line-height: 1.85;
      padding: 4px 0 4px 16px;
      margin: 24px 0;
    }

    /* Section 4 - mechanism + symptoms */
    .lede br { display: none; }
    .symptoms-grid { gap: 20px; margin-top: 56px; }
    .symptom-card { padding: 40px 28px; }
    .symptom-card h4 { font-size: 19px; }
    .symptom-card .en-cap { font-size: 11px; margin-bottom: 20px; letter-spacing: 0.2em; }
    .symptom-card .heading-row { font-size: 11px; letter-spacing: 0.2em; margin-bottom: 8px; }
    .symptom-card li { font-size: 14px; padding: 12px 0 12px 20px; }
    .closing-statement {
      margin-top: 64px;
      padding: 40px 4px;
    }
    .closing-statement p {
      font-size: 15px;
      line-height: 2;
      letter-spacing: 0.04em;
    }
    .closing-statement p br { display: none; }

    /* Section 5 - closing */
    .s-closing { padding: 88px 24px; }
    .closing-poem {
      font-size: 16px;
      line-height: 2;
      margin: 40px 0 48px;
    }
    .closing-poem .green-line {
      font-size: 1.05em;
      padding: 0.5em 0.4em;
      line-height: 1.7;
    }
    .closing-body { font-size: 14.5px; line-height: 1.95; margin-bottom: 56px; }
    .final-cta {
      padding: 22px 24px;
      font-size: 13px;
      letter-spacing: 0.08em;
      width: 100%;
      justify-content: space-between;
      gap: 12px;
    }

    /* Footer */
    footer { padding: 56px 24px 32px; }
    .footer-inner {
      grid-template-columns: 1fr;
      gap: 36px;
      padding-bottom: 32px;
    }
    .footer-logo .jp { font-size: 20px; }
    .footer-logo p { font-size: 12.5px; }
    .footer-col h5 { font-size: 12px; margin-bottom: 16px; }
    .footer-col li { font-size: 13px; padding: 6px 0; }
    .footer-bottom { font-size: 10px; padding-top: 24px; }

    /* Voice */
    .voice-grid { grid-template-columns: 1fr; gap: 20px; margin-top: 40px; }

    /* Founder */
    .founder-photo-inner { max-width: 100%; padding: 0 12px 12px 0; }
    .founder-eyebrow { font-size: 10px; letter-spacing: 0.35em; gap: 10px; }
    .founder-eyebrow::before { width: 22px; }
    .founder-role { font-size: 11.5px; }
    .founder-name { font-size: 26px; gap: 10px; }
    .founder-quote { font-size: 15px; padding: 5px 0 5px 18px; margin-bottom: 28px; }
    .founder-story p { font-size: 14.5px; line-height: 1.95; }
    .founder-stats {
      grid-template-columns: 1fr;
      padding-top: 32px;
      margin-top: 36px;
      gap: 0;
    }
    .stat-item {
      display: flex;
      align-items: baseline;
      gap: 16px;
      padding: 20px 0;
      border-right: none;
      border-bottom: 1px solid var(--line);
    }
    .stat-item:first-child { padding-top: 0; }
    .stat-item:last-child { border-bottom: none; padding-bottom: 0; }
    .stat-num { margin-bottom: 0; flex-shrink: 0; font-size: 24px; }
    .stat-label { font-size: 12px; }
  }