:root {
  --paper: #f7f4ec;
  --paper-deep: #eee9dc;
  --ink: #252823;
  --muted: #6e736a;
  --sage: #aab69a;
  --sage-deep: #55664e;
  --sky: #91c9e5;
  --gold: #b39a62;
  --line: rgba(37, 40, 35, 0.16);
  --serif: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif JP", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", sans-serif;
  --max: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.9; letter-spacing: 0.035em; }
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
::selection { background: rgba(145, 201, 229, 0.42); }
.skip-link { position: fixed; z-index: 100; top: 8px; left: 8px; padding: 8px 14px; background: var(--ink); color: white; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 2px solid var(--sage-deep); outline-offset: 4px; }

.site-header { position: fixed; z-index: 30; inset: 0 0 auto; height: 78px; display: flex; align-items: center; justify-content: space-between; padding: 0 clamp(20px, 4vw, 64px); background: rgba(247, 244, 236, 0.78); border-bottom: 1px solid rgba(255,255,255,.55); backdrop-filter: blur(18px); }
.brand { display: inline-flex; align-items: baseline; gap: 12px; }
.brand__ja { font-family: var(--serif); font-size: 1.05rem; letter-spacing: .14em; }
.brand__en { color: var(--muted); font-size: .64rem; letter-spacing: .2em; }
.site-nav { display: flex; align-items: center; gap: clamp(18px, 2.3vw, 38px); font-family: Georgia, serif; font-size: .78rem; letter-spacing: .09em; }
.site-nav a { position: relative; padding-block: 6px; }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px; background: currentColor; transition: right .3s ease; }
.site-nav a:hover::after { right: 0; }
.menu-button { display: none; width: 44px; height: 44px; padding: 0; border: 0; background: none; }
.menu-button span { display: block; width: 22px; height: 1px; margin: 7px auto; background: var(--ink); transition: transform .3s ease; }

.hero { position: relative; min-height: 100svh; display: flex; align-items: center; overflow: hidden; padding: 120px clamp(22px, 7vw, 110px) 90px; background: #d9edf6; }
.hero__image { position: absolute; inset: 0; background: url("/assets/images/hero-rejuvenation.jpg?v=20260917-2") 63% center / cover no-repeat; }
.hero__veil { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(247,244,236,.96) 0%, rgba(247,244,236,.86) 28%, rgba(247,244,236,.18) 60%, rgba(247,244,236,0) 78%); }
.hero__content { position: relative; z-index: 2; width: min(780px, 74vw); }
.eyebrow { margin: 0 0 20px; color: var(--sage-deep); font-family: Georgia, serif; font-size: .7rem; letter-spacing: .23em; text-transform: uppercase; }
.hero h1 { margin: 0 0 26px; font-family: Georgia, "Times New Roman", serif; font-size: clamp(3.5rem, 9.4vw, 9.2rem); font-weight: 400; line-height: .8; letter-spacing: -.045em; }
.hero__lead { margin: 0 0 28px; font-family: var(--serif); font-size: clamp(1.65rem, 3vw, 2.6rem); line-height: 1.48; letter-spacing: .08em; }
.hero__copy { max-width: 510px; margin: 0; color: #3f443d; font-size: clamp(.94rem, 1.2vw, 1.04rem); line-height: 2; }
.hero__actions { display: flex; align-items: center; gap: 30px; margin-top: 38px; }
.button { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; gap: 16px; padding: 13px 25px; border: 1px solid transparent; font-size: .83rem; letter-spacing: .08em; transition: transform .25s ease, background .25s ease, color .25s ease; }
.button:hover { transform: translateY(-2px); }
.button--dark { background: var(--ink); color: #fff; }
.button--dark:hover { background: var(--sage-deep); }
.button--outline { border-color: var(--ink); color: var(--ink); }
.button--outline:hover { background: var(--ink); color: #fff; }
.text-link { border-bottom: 1px solid currentColor; font-size: .83rem; }
.hero__side { position: absolute; z-index: 2; right: 24px; top: 50%; margin: 0; color: rgba(37,40,35,.62); font-family: Georgia, serif; font-size: .6rem; letter-spacing: .24em; writing-mode: vertical-rl; }
.scroll-cue { position: absolute; z-index: 2; bottom: 24px; left: clamp(22px, 7vw, 110px); display: flex; align-items: center; gap: 12px; font-family: Georgia, serif; font-size: .64rem; letter-spacing: .18em; }
.scroll-cue i { display: block; width: 58px; height: 1px; background: var(--ink); transform-origin: left; animation: breathe-line 2.5s ease-in-out infinite; }
@keyframes breathe-line { 50% { transform: scaleX(.45); opacity: .45; } }

.section { position: relative; max-width: var(--max); margin-inline: auto; padding: clamp(100px, 13vw, 190px) clamp(22px, 5vw, 72px); }
.section h2 { margin: 0; font-family: var(--serif); font-size: clamp(2.25rem, 5vw, 4.9rem); font-weight: 400; line-height: 1.35; letter-spacing: .06em; }
.section-number { position: absolute; top: clamp(80px, 10vw, 140px); right: clamp(22px, 5vw, 72px); color: var(--gold); font-family: Georgia, serif; font-size: .72rem; }
.intro { min-height: 760px; display: grid; grid-template-columns: 1.2fr .8fr; align-items: center; gap: 10%; overflow: hidden; }
.intro__copy { align-self: end; max-width: 500px; padding-bottom: 7%; }
.intro__copy p { margin: 0 0 24px; }
.intro__copy p:first-child { font-family: var(--serif); font-size: 1.2rem; line-height: 2; }
.orbit { position: absolute; width: 360px; height: 360px; left: 36%; top: 49%; opacity: .25; pointer-events: none; }
.orbit span { position: absolute; inset: 0; border: 1px solid var(--gold); border-radius: 50%; transform: rotate(45deg) scaleY(.28); }
.orbit span:nth-child(2) { transform: rotate(-20deg) scaleY(.28); }
.orbit span:nth-child(3) { transform: rotate(90deg) scaleY(.28); }

.body-mind { max-width: 1400px; display: grid; grid-template-columns: minmax(300px, .85fr) minmax(400px, 1.15fr); gap: clamp(48px, 8vw, 120px); align-items: start; }
.image-frame { position: relative; overflow: hidden; }
.image-frame img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s cubic-bezier(.2,.8,.2,1); }
.image-frame:hover img { transform: scale(1.02); }
.body-mind__image { height: min(70vw, 860px); min-height: 620px; }
.image-caption { position: absolute; left: 18px; bottom: 18px; padding: 8px 12px; background: rgba(247,244,236,.72); backdrop-filter: blur(12px); font-family: Georgia, serif; font-size: .58rem; letter-spacing: .18em; }
.theme-block { padding-top: 30px; }
.theme-block + .theme-block { margin-top: clamp(90px, 13vw, 170px); }
.theme-block__meta { display: flex; gap: 20px; margin-bottom: 40px; color: var(--gold); font-family: Georgia, serif; font-size: .7rem; letter-spacing: .18em; text-transform: uppercase; }
.theme-block h2 { margin-bottom: 32px; }
.theme-block > p { max-width: 580px; margin: 0; }
.theme-block--mind { border-top: 1px solid var(--line); }
.keyword-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 32px 0 0; padding: 0; list-style: none; }
.keyword-list li { padding: 5px 13px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: .74rem; letter-spacing: .08em; }

.science { max-width: 1400px; display: grid; grid-template-columns: 1fr .85fr; gap: clamp(48px, 9vw, 130px); align-items: center; }
.science__content { padding-block: 50px; }
.science__content h2 { margin-bottom: 38px; }
.science__content > p { max-width: 600px; }
.science__lead { font-family: var(--serif); font-size: 1.2rem; }
.science__note { display: grid; grid-template-columns: 60px 1fr; gap: 16px; max-width: 580px; margin-top: 36px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); }
.science__note span { color: var(--gold); font-family: Georgia, serif; font-size: .65rem; letter-spacing: .16em; }
.science__note p { margin: 0; font-size: .75rem; line-height: 1.8; }
.science__image { height: min(68vw, 800px); min-height: 580px; }

.ai-invitation { max-width: 1400px; display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(55px, 10vw, 150px); align-items: center; overflow: hidden; }
.ai-invitation::before { content: ""; position: absolute; width: 420px; height: 420px; top: 50%; left: 13%; border: 1px solid rgba(179,154,98,.3); border-radius: 50%; transform: translateY(-50%); }
.ai-invitation::after { content: ""; position: absolute; width: 260px; height: 260px; top: 50%; left: 19%; background: radial-gradient(circle, rgba(145,201,229,.22), rgba(170,182,154,.08) 45%, transparent 70%); border-radius: 50%; transform: translateY(-50%); filter: blur(5px); }
.ai-invitation__intro, .ai-invitation__copy { position: relative; z-index: 1; }
.ai-invitation__intro h2 { font-size: clamp(3rem, 5.4vw, 5.8rem); white-space: nowrap; }
.ai-invitation__copy { max-width: 520px; padding: 60px 0; }
.ai-invitation__lead { margin: 0 0 28px; font-family: var(--serif); font-size: clamp(1.5rem, 2.7vw, 2.2rem); line-height: 1.6; }
.ai-invitation__copy > p:not(.ai-invitation__lead) { color: var(--muted); }
.ai-invitation__copy .button { margin-top: 28px; }
.ai-invitation__words { position: absolute; right: 5%; bottom: 60px; display: flex; align-items: center; gap: 12px; color: var(--gold); font-family: var(--serif); font-size: .72rem; letter-spacing: .12em; }
.ai-invitation__words i { width: 34px; height: 1px; background: rgba(179,154,98,.5); }

.journal { max-width: 1400px; }
.journal__header { display: flex; justify-content: space-between; align-items: end; gap: 40px; margin-bottom: 70px; }
.journal__header > p { max-width: 360px; margin: 0; color: var(--muted); }
.journal-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 60px 26px; }
.journal-card { display: grid; grid-template-columns: 42% 1fr; min-height: 260px; background: rgba(255,255,255,.35); border-top: 1px solid var(--line); transition: transform .3s ease, background .3s ease; }
a.journal-card:hover { transform: translateY(-3px); background: rgba(255,255,255,.7); }
.journal-card img { width: 100%; height: 100%; min-height: 260px; object-fit: cover; }
.journal-card:nth-child(3) img { object-position: 60% center; }
.journal-card__body { display: flex; flex-direction: column; padding: 24px 24px 20px; }
.journal-card__meta { margin: 0 0 28px; color: var(--gold); font-family: Georgia, serif; font-size: .62rem; letter-spacing: .12em; }
.journal-card h3 { margin: 0 0 16px; font-family: var(--serif); font-size: clamp(1.1rem, 2vw, 1.45rem); font-weight: 400; line-height: 1.65; }
.journal-card__body > p:last-child { margin: auto 0 0; color: var(--muted); font-size: .8rem; line-height: 1.75; }

.about { display: grid; grid-template-columns: .8fr 1fr; align-items: center; gap: clamp(55px, 10vw, 150px); min-height: 850px; }
.portrait-ring { position: relative; border-radius: 50%; padding: 4%; border: 1px solid rgba(179,154,98,.5); }
.portrait-ring::after { content: ""; position: absolute; inset: -6% 10% 6% -10%; border: 1px solid rgba(145,201,229,.6); border-radius: 50%; pointer-events: none; }
.portrait-ring img { aspect-ratio: 1; border-radius: 50%; object-fit: cover; }
.about__content { max-width: 520px; }
.about__content h2 { margin-bottom: 42px; }
.about__name { display: flex; align-items: baseline; gap: 16px; margin-bottom: 30px !important; font-family: var(--serif); font-size: 1.35rem; }
.about__name span { color: var(--muted); font-family: Georgia, serif; font-size: .62rem; letter-spacing: .18em; }
.about__content > p { margin: 0 0 22px; }

.contact { max-width: none; padding: 0; background: #293128; color: #f8f5ed; }
.contact__inner { min-height: 620px; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 90px 22px; text-align: center; background: radial-gradient(circle at 50% 35%, rgba(145,201,229,.12), transparent 36%); }
.contact .eyebrow { color: #c9d7bd; }
.contact h2 { margin-bottom: 22px; font-size: clamp(2.6rem, 6vw, 5.3rem); }
.contact__inner > p { color: rgba(255,255,255,.7); }
.button--light { margin-top: 26px; border-color: rgba(255,255,255,.45); color: #fff; }
.button--light:hover { background: #f8f5ed; color: var(--ink); }
.button[aria-disabled="true"] { cursor: not-allowed; opacity: .68; }
.contact__status { margin: 12px 0 0; font-size: .75rem; }

.site-footer { min-height: 190px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 30px; padding: 45px clamp(22px, 5vw, 72px); background: #1f241e; color: rgba(255,255,255,.7); }
.site-footer__brand { display: flex; flex-direction: column; font-family: var(--serif); color: white; letter-spacing: .12em; }
.site-footer__brand small { font-family: Georgia, serif; font-size: .55rem; letter-spacing: .2em; }
.site-footer nav { display: flex; gap: 28px; font-family: Georgia, serif; font-size: .75rem; }
.site-footer a[aria-disabled="true"] { opacity: .38; cursor: default; }
.site-footer > p { justify-self: end; margin: 0; font-family: Georgia, serif; font-size: .64rem; }

/* AI & Creation */
.ai-page { background: #f7f4ec; }
.ai-page .site-header { background: rgba(247,244,236,.86); }
.ai-page .site-nav a[aria-current="page"]::after { right: 0; }
.ai-hero { position: relative; min-height: 86svh; display: grid; grid-template-columns: 1fr .38fr; align-items: center; overflow: hidden; padding: 150px clamp(22px, 8vw, 130px) 100px; background: linear-gradient(128deg, #f7f4ec 8%, #eef1e8 65%, #e4edf0 100%); }
.ai-hero::before { content: ""; position: absolute; inset: 14% 10% 10% 46%; border: 1px solid rgba(255,255,255,.72); border-radius: 48% 52% 46% 54%; background: linear-gradient(140deg, rgba(255,255,255,.48), rgba(255,255,255,.08)); box-shadow: inset 0 0 60px rgba(255,255,255,.4), 0 32px 90px rgba(85,102,78,.08); backdrop-filter: blur(18px); transform: rotate(-7deg); }
.ai-hero::after { content: ""; position: absolute; width: min(35vw, 430px); aspect-ratio: 1; right: 12%; top: 17%; border: 1px solid rgba(179,154,98,.35); border-radius: 50%; }
.ai-hero__glow { position: absolute; width: 440px; height: 440px; right: 8%; bottom: -15%; border-radius: 50%; background: radial-gradient(circle, rgba(145,201,229,.34), rgba(170,182,154,.12) 50%, transparent 72%); filter: blur(16px); }
.ai-hero__content { position: relative; z-index: 2; max-width: 930px; }
.ai-hero h1 { margin: 0; font-family: var(--serif); font-size: clamp(3rem, 7.8vw, 7.5rem); font-weight: 400; line-height: 1.22; letter-spacing: .04em; }
.ai-hero__lead { margin: 42px 0 0; color: var(--sage-deep); font-family: var(--serif); font-size: clamp(1.15rem, 2vw, 1.65rem); line-height: 1.75; letter-spacing: .08em; }
.ai-hero__note { position: relative; z-index: 2; justify-self: end; display: flex; flex-direction: column; gap: 40px; color: rgba(37,40,35,.45); font-family: Georgia, serif; font-size: .62rem; letter-spacing: .24em; writing-mode: vertical-rl; }
.ai-hero .scroll-cue { left: clamp(22px, 8vw, 130px); }

.ai-introduction { min-height: 760px; display: grid; grid-template-columns: 1fr .82fr; align-items: center; gap: 10%; }
.ai-introduction__heading h2 { font-size: clamp(2.3rem, 4.8vw, 4.6rem); }
.ai-introduction__copy { max-width: 540px; }
.ai-introduction__copy p { margin: 0 0 26px; }
.ai-introduction__copy p:first-child { font-family: var(--serif); font-size: 1.25rem; }
.ai-introduction__copy strong, .ai-belief__content strong { font-weight: 500; background: linear-gradient(transparent 68%, rgba(179,154,98,.18) 68%); }

.ai-services { max-width: 1400px; }
.ai-services__header { display: grid; grid-template-columns: 1fr .65fr; column-gap: 8%; align-items: end; margin-bottom: 75px; }
.ai-services__header .eyebrow { grid-column: 1 / -1; }
.ai-services__header h2 { font-size: clamp(2.2rem, 4.4vw, 4.4rem); }
.ai-services__header > p:last-child { margin: 0 0 10px; color: var(--muted); }
.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.service-card { position: relative; min-height: 460px; display: flex; flex-direction: column; padding: clamp(28px, 4vw, 54px); border: 1px solid var(--line); background: rgba(255,255,255,.28); }
.service-card--featured { grid-column: 1 / -1; min-height: 560px; display: grid; grid-template-columns: .24fr 1fr; align-items: start; background: linear-gradient(135deg, rgba(255,255,255,.7), rgba(226,235,224,.63)); border-color: rgba(85,102,78,.26); }
.service-card--featured::after { content: "HOMEPAGE"; position: absolute; right: 28px; bottom: 16px; color: rgba(85,102,78,.09); font-family: Georgia, serif; font-size: clamp(3rem, 10vw, 9rem); line-height: 1; letter-spacing: -.02em; pointer-events: none; }
.service-card__number { color: var(--gold); font-family: Georgia, serif; font-size: .72rem; letter-spacing: .18em; }
.service-card__label { margin: 0 0 18px; color: var(--sage-deep); font-family: Georgia, serif; font-size: .65rem; letter-spacing: .2em; text-transform: uppercase; }
.service-card h3 { margin: 0 0 26px; font-family: var(--serif); font-size: clamp(1.65rem, 3vw, 2.8rem); font-weight: 400; line-height: 1.45; letter-spacing: .05em; }
.service-card--featured h3 { font-size: clamp(2.3rem, 5vw, 5rem); }
.service-card__for { font-family: var(--serif); font-size: 1.05rem; }
.service-card p { max-width: 720px; }
.service-card ul { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 34px; max-width: 760px; margin: 26px 0 36px; padding: 22px 0 0; border-top: 1px solid var(--line); list-style: none; color: var(--muted); font-size: .84rem; }
.service-card li::before { content: "—"; margin-right: 9px; color: var(--gold); }
.service-card .text-link { align-self: flex-start; margin-top: auto; padding-top: 26px; }
.service-card .button { position: relative; z-index: 1; align-self: flex-start; }
.ai-services__status { margin: 20px 0 0; color: var(--muted); text-align: center; }

.ai-belief { max-width: 1400px; display: grid; grid-template-columns: .6fr 1fr; gap: clamp(50px, 10vw, 150px); align-items: center; min-height: 780px; }
.ai-belief__label { min-height: 380px; display: flex; flex-direction: column; justify-content: space-between; padding: 35px; border: 1px solid rgba(255,255,255,.6); background: linear-gradient(145deg, rgba(170,182,154,.25), rgba(145,201,229,.13)); box-shadow: inset 0 0 50px rgba(255,255,255,.32); }
.ai-belief__label > span { color: var(--sage-deep); font-family: Georgia, serif; font-size: clamp(2rem, 4vw, 4.4rem); line-height: 1.05; letter-spacing: -.04em; }
.ai-belief__content { max-width: 650px; }
.ai-belief__content h2 { margin-bottom: 42px; }
.ai-belief__content p { margin: 0 0 22px; }

.ai-faq { max-width: 1400px; display: grid; grid-template-columns: .6fr 1fr; gap: clamp(50px, 10vw, 150px); align-items: start; }
.ai-faq__header { position: sticky; top: 130px; }
.ai-faq__header h2 { font-size: clamp(2.2rem, 4vw, 4rem); }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { display: grid; grid-template-columns: 46px 1fr; gap: 14px; padding: 26px 36px 26px 0; cursor: pointer; font-family: var(--serif); font-size: 1.06rem; line-height: 1.65; list-style: none; position: relative; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 4px; top: 25px; color: var(--gold); font-family: Georgia, serif; font-size: 1.2rem; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list summary span { color: var(--gold); font-family: Georgia, serif; font-size: .68rem; letter-spacing: .14em; }
.faq-list details p { margin: -4px 0 28px 60px; color: var(--muted); font-size: .92rem; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .8s ease, transform .8s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; } .reveal { opacity: 1; transform: none; } }

@media (max-width: 900px) {
  .site-header { height: 68px; }
  .menu-button { position: relative; z-index: 2; display: block; }
  .menu-open .menu-button span:first-child { transform: translateY(4px) rotate(45deg); }
  .menu-open .menu-button span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .site-nav { position: fixed; top: 0; left: 0; width: 100%; height: 100svh; display: flex; flex-direction: column; justify-content: center; gap: 20px; background: rgba(247,244,236,.98); opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .3s ease, visibility .3s ease; font-size: 1.35rem; }
  .menu-open .site-nav { opacity: 1; visibility: visible; pointer-events: auto; }
  .hero { min-height: 920px; align-items: end; padding-bottom: 100px; }
  .hero__image { background-position: 68% center; }
  .hero__veil { background: linear-gradient(180deg, rgba(247,244,236,.1) 0%, rgba(247,244,236,.18) 34%, rgba(247,244,236,.93) 72%, var(--paper) 100%); }
  .hero__content { width: 100%; }
  .hero h1 { font-size: clamp(3rem, 13vw, 6rem); }
  .hero__side { display: none; }
  .intro { min-height: 700px; grid-template-columns: 1fr; gap: 40px; align-content: center; }
  .intro__copy { padding: 0; }
  .orbit { left: 48%; top: 38%; width: 250px; height: 250px; }
  .body-mind, .science, .about, .ai-invitation, .ai-introduction, .ai-belief, .ai-faq { grid-template-columns: 1fr; }
  .body-mind__image { height: min(125vw, 760px); min-height: 500px; }
  .science__image { order: -1; height: min(120vw, 760px); min-height: 500px; }
  .about { min-height: auto; }
  .about__portrait { width: min(520px, 86vw); margin-inline: auto; }
  .journal-grid { grid-template-columns: 1fr; }
  .ai-invitation { gap: 38px; }
  .ai-invitation::before { left: 6%; top: 32%; }
  .ai-invitation::after { left: 15%; top: 32%; }
  .ai-invitation__copy { justify-self: end; width: min(100%, 620px); }
  .ai-hero { grid-template-columns: 1fr; min-height: 820px; }
  .ai-hero::before { inset: 26% -5% 9% 35%; }
  .ai-hero__note { display: none; }
  .ai-introduction { min-height: 700px; gap: 48px; align-content: center; }
  .ai-services__header { grid-template-columns: 1fr; gap: 26px; }
  .ai-services__header > p:last-child { max-width: 580px; }
  .ai-belief { min-height: auto; }
  .ai-belief__label { min-height: 280px; }
  .ai-faq__header { position: static; }
}

@media (max-width: 600px) {
  body { font-size: 16px; line-height: 1.85; }
  .brand__en { display: none; }
  .hero { min-height: 100svh; padding: 100px 20px 78px; }
  .hero__image { background-position: 67% center; }
  .hero__content { padding-top: 48vh; }
  .hero h1 { margin-bottom: 20px; font-size: clamp(2.45rem, 10.7vw, 4.6rem); letter-spacing: -.06em; }
  .hero__lead { font-size: 1.55rem; }
  .hero__copy { font-size: .88rem; }
  .hero__actions { align-items: flex-start; flex-direction: column; gap: 18px; margin-top: 28px; }
  .button { width: 100%; min-height: 54px; }
  .scroll-cue { display: none; }
  .section { padding: 90px 20px; }
  .section h2 { font-size: 2.25rem; }
  .intro { min-height: 720px; }
  .intro__copy p:first-child { font-size: 1.05rem; }
  .body-mind { padding-top: 0; }
  .body-mind__image, .science__image { min-height: 0; height: 124vw; }
  .theme-block + .theme-block { margin-top: 90px; }
  .theme-block__meta { margin-bottom: 26px; }
  .science { gap: 32px; }
  .science__content { padding-block: 10px; }
  .science__note { grid-template-columns: 1fr; gap: 6px; }
  .ai-invitation { padding-top: 100px; padding-bottom: 110px; }
  .ai-invitation::before { width: 230px; height: 230px; top: 25%; }
  .ai-invitation::after { width: 170px; height: 170px; top: 25%; }
  .ai-invitation__intro h2 { font-size: 3rem; }
  .ai-invitation__copy { padding: 50px 0 0; }
  .ai-invitation__words { right: 20px; bottom: 38px; gap: 8px; font-size: .63rem; }
  .ai-invitation__words i { width: 18px; }
  .journal__header { align-items: start; flex-direction: column; margin-bottom: 44px; }
  .journal-grid { gap: 32px; }
  .journal-card { grid-template-columns: 1fr; }
  .journal-card img { aspect-ratio: 5 / 3; min-height: 0; }
  .journal-card__body { min-height: 230px; }
  .about { gap: 55px; }
  .about__content h2 { margin-bottom: 32px; }
  .about__name { align-items: start; flex-direction: column; gap: 2px; }
  .contact__inner { min-height: 560px; }
  .ai-hero { min-height: 100svh; padding: 118px 20px 90px; align-items: center; }
  .ai-hero::before { inset: 33% -42% 8% 28%; }
  .ai-hero::after { width: 76vw; right: -12%; top: 27%; }
  .ai-hero h1 { font-size: clamp(2.55rem, 11.2vw, 4.8rem); line-height: 1.3; }
  .ai-hero__lead { margin-top: 30px; font-size: 1.12rem; }
  .ai-introduction { min-height: auto; gap: 42px; }
  .ai-introduction__copy p:first-child { font-size: 1.1rem; }
  .service-grid { grid-template-columns: 1fr; gap: 16px; }
  .service-card, .service-card--featured { min-height: 0; grid-column: auto; display: flex; padding: 30px 24px; }
  .service-card--featured::after { right: 10px; bottom: 8px; font-size: 3rem; }
  .service-card__number { margin-bottom: 32px; }
  .service-card ul { grid-template-columns: 1fr; }
  .service-card .button { width: 100%; }
  .ai-belief { gap: 46px; }
  .ai-belief__label { min-height: 230px; padding: 26px; }
  .ai-faq { gap: 50px; }
  .faq-list summary { grid-template-columns: 34px 1fr; padding-right: 30px; font-size: .98rem; }
  .faq-list details p { margin-left: 48px; }
  .site-footer { grid-template-columns: 1fr; min-height: 300px; text-align: center; }
  .site-footer__brand { align-items: center; }
  .site-footer nav { justify-content: center; }
  .site-footer > p { justify-self: center; }
}