:root {
  --ink: #0a0a0a;
  --paper: #f7f6f2;
  --white: #fff;
  --muted: #6d6b66;
  --line: #d9d6cf;
  --gold: #b28a32;
  --gold-light: #d7bd78;
  --serif: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif JP", serif;
  --sans: Inter, "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.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; }

.site-header {
  position: fixed; inset: 0 0 auto; z-index: 50; height: 80px; display: flex; align-items: center; justify-content: space-between;
  padding: 0 max(28px, calc((100vw - var(--max)) / 2)); background: rgba(247, 246, 242, .9); border-bottom: 1px solid rgba(10,10,10,.08);
  backdrop-filter: blur(16px);
}
.brand { display: grid; gap: 3px; }
.brand-ja { font-family: var(--serif); font-size: 20px; font-weight: 700; letter-spacing: .05em; }
.brand-en { color: #77736a; font-size: 9px; font-weight: 700; letter-spacing: .2em; }
.global-nav { display: flex; align-items: center; gap: 30px; font-size: 13px; font-weight: 700; }
.global-nav a { transition: color .2s ease; }
.global-nav a:hover { color: var(--gold); }
.global-nav .nav-cta { padding: 13px 20px; color: var(--white); background: var(--ink); }
.menu-button { display: none; width: 44px; height: 44px; padding: 11px; border: 0; background: transparent; }
.menu-button span:not(.sr-only) { display: block; height: 1px; margin: 6px 0; background: var(--ink); transition: transform .2s ease; }

.hero { min-height: 720px; padding-top: 80px; display: grid; grid-template-columns: minmax(0, 52%) minmax(0, 48%); background: var(--white); overflow: hidden; }
.hero-copy { position: relative; z-index: 2; display: flex; flex-direction: column; justify-content: center; padding: 80px clamp(30px, 7vw, 118px); }
.eyebrow, .section-label { margin: 0 0 22px; color: var(--gold); font-size: 12px; font-weight: 800; letter-spacing: .2em; }
.hero h1 { margin: 0; font-family: var(--serif); font-size: clamp(54px, 6vw, 92px); font-weight: 500; line-height: 1.22; letter-spacing: .04em; }
.hero-services { max-width: 610px; margin: 26px 0 0; font-size: 14px; font-weight: 700; line-height: 1.8; }
.hero-lead { max-width: 570px; margin: 20px 0 0; color: #53514c; font-size: 15px; line-height: 2; }
.button-row { display: flex; gap: 14px; margin-top: 34px; }
.button { min-width: 190px; display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 18px 20px; border: 1px solid var(--ink); font-size: 13px; font-weight: 800; transition: transform .25s ease, background .25s ease, color .25s ease; }
.button:hover { transform: translateY(-2px); }
.button-dark { color: var(--white); background: var(--ink); }
.button-light { background: var(--white); }
.hero-visual { position: relative; min-height: 640px; overflow: hidden; background: #151515; clip-path: polygon(23% 0, 100% 0, 100% 100%, 0 100%); }
.hero-visual::after { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(0,0,0,.2), transparent 48%, rgba(0,0,0,.35)); }
.hero-visual img { width: 100%; height: 100%; object-fit: cover; object-position: 55% center; filter: grayscale(1) contrast(1.08); transform: scale(1.04); }
.hero-line { position: absolute; z-index: 2; inset: -20% -10% auto 20%; width: 86%; aspect-ratio: 1; border: 1px solid var(--gold); border-radius: 50%; }
.hero-wave { position: absolute; z-index: 3; right: 4%; top: 58%; color: var(--gold-light); font-size: clamp(18px, 3vw, 40px); letter-spacing: .18em; opacity: .75; }

.section { padding: 110px 24px; }
.section-inner { width: min(100%, var(--max)); margin: 0 auto; }
.section-inner.narrow { max-width: 1040px; }
.section-title { margin: 0; font-family: var(--serif); font-size: clamp(38px, 4.6vw, 64px); font-weight: 500; line-height: 1.3; letter-spacing: .04em; }
.section-title-light { color: var(--white); }
.section-label-gold { color: var(--gold-light); }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 40px; margin-bottom: 54px; }
.section-heading > p { max-width: 430px; margin: 0 0 6px; color: var(--muted); line-height: 1.9; }

.reasons { padding: 62px 24px 68px; color: var(--white); background: var(--ink); }
.reasons .section-title { font-size: 34px; }
.reason-grid { margin-top: 46px; display: grid; grid-template-columns: repeat(4, 1fr); }
.reason-grid article { padding: 4px clamp(20px, 3.2vw, 48px) 10px; border-left: 1px solid #46433b; }
.reason-grid article:first-child { border-left: 0; }
.line-icon { display: block; margin-bottom: 20px; color: var(--gold-light); font-family: var(--serif); font-size: 40px; line-height: 1; }
.reason-grid h3 { margin: 0 0 12px; font-size: 17px; }
.reason-grid p { margin: 0; color: #aaa69e; font-size: 13px; line-height: 1.75; }

.concerns { text-align: center; background: var(--white); }
.check-list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 64px; margin: 52px 0 0; padding: 0; list-style: none; text-align: left; }
.check-list li { position: relative; padding: 0 0 14px 34px; border-bottom: 1px solid var(--line); font-size: 15px; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: -2px; width: 20px; height: 20px; display: grid; place-items: center; color: var(--white); background: var(--ink); font-size: 11px; }
.concerns-answer { margin: 48px 0 0; font-family: var(--serif); font-size: 27px; }

.services { background: #f1f0ec; }
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.service-grid article { min-height: 230px; position: relative; padding: 26px; background: var(--white); border: 1px solid var(--line); transition: transform .25s ease, box-shadow .25s ease; }
.service-grid article:hover { transform: translateY(-5px); box-shadow: 0 18px 34px rgba(0,0,0,.07); }
.service-grid article > span { display: block; color: #777; font-size: 11px; letter-spacing: .12em; }
.service-grid i { display: block; margin: 26px 0 18px; color: var(--ink); font-style: normal; font-size: 30px; }
.service-grid h3 { margin: 0; font-family: var(--serif); font-size: 21px; line-height: 1.45; }
.service-grid p { margin: 13px 0 0; color: var(--muted); font-size: 12px; line-height: 1.7; }
.service-grid article:nth-child(5), .service-grid article:nth-child(6), .service-grid article:nth-child(7) { grid-column: span 1; }
.wide-cta { width: min(100%, 720px); margin: 34px auto 0; padding: 20px 28px; display: flex; justify-content: space-between; color: var(--white); background: var(--ink); font-size: 13px; font-weight: 800; transition: background .2s ease; }
.wide-cta:hover { background: #292929; }

.about { padding: 0; display: grid; grid-template-columns: 42% 58%; background: var(--white); }
.about-image { min-height: 600px; position: relative; overflow: hidden; background: var(--ink); }
.about-image::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,.72)); }
.about-image img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1); }
.about-image span { position: absolute; z-index: 2; left: 40px; bottom: 36px; color: var(--white); font-family: var(--serif); font-size: 13px; letter-spacing: .22em; }
.about-copy { display: flex; flex-direction: column; justify-content: center; padding: 90px clamp(38px, 8vw, 126px); }
.about-copy > p:not(.section-label) { max-width: 640px; margin: 32px 0 0; color: var(--muted); line-height: 2.1; }
.role-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; margin-top: 34px; }
.role-row span { padding: 10px 13px; border: 1px solid var(--line); font-size: 10px; font-weight: 800; letter-spacing: .1em; }
.role-row b { color: var(--gold); font-weight: 400; }
.text-link { width: fit-content; margin-top: 34px; padding-bottom: 8px; border-bottom: 1px solid var(--ink); font-size: 13px; font-weight: 800; }

.flow { background: var(--white); }
.flow-list { display: grid; grid-template-columns: repeat(6, 1fr); gap: 0; margin: 60px 0 0; padding: 0; list-style: none; }
.flow-list li { position: relative; min-height: 210px; padding: 24px; text-align: center; border-left: 1px solid var(--line); }
.flow-list li:first-child { border-left: 0; }
.flow-list li:not(:last-child)::after { content: "→"; position: absolute; right: -7px; top: 75px; z-index: 2; width: 14px; color: var(--gold); background: var(--white); }
.flow-list span { display: block; color: var(--gold); font-size: 10px; letter-spacing: .16em; }
.flow-list i { display: block; margin: 22px auto; font-style: normal; font-size: 30px; }
.flow-list h3 { margin: 0; font-family: var(--serif); font-size: 17px; }
.flow-list p { margin: 10px 0 0; color: var(--muted); font-size: 11px; line-height: 1.6; }

.works { display: grid; grid-template-columns: 38% 62%; color: var(--white); background: var(--ink); }
.works-copy { padding: 72px max(32px, calc((100vw - var(--max)) / 2)); padding-right: 54px; }
.works-copy h2 { margin: 0; font-family: var(--serif); font-size: 48px; font-weight: 500; }
.works-copy p:not(.section-label) { color: #aaa69e; line-height: 1.8; }
.button-outline-light { width: fit-content; margin-top: 26px; border-color: #777; }
.works-strip { display: grid; grid-template-columns: repeat(4, 1fr); min-height: 340px; }
.works-strip div { display: flex; flex-direction: column; justify-content: end; padding: 24px; border-left: 1px solid #333; background: linear-gradient(180deg, #242424, #0f0f0f); }
.works-strip div:nth-child(even) { background: linear-gradient(180deg, #141414, #292929); }
.works-strip span { color: var(--gold-light); font-size: 10px; font-weight: 800; letter-spacing: .15em; }
.works-strip strong { margin-top: 7px; font-family: var(--serif); font-size: 15px; }

.recording { background: var(--white); }
.spec-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 54px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.spec-grid article { padding: 34px; text-align: center; border-left: 1px solid var(--line); }
.spec-grid article:first-child { border-left: 0; }
.spec-grid span { color: var(--gold); font-size: 28px; }
.spec-grid h3 { margin: 14px 0 7px; font-size: 15px; }
.spec-grid p { margin: 0; color: var(--muted); font-size: 12px; }
.delivery { margin-top: 54px; text-align: center; }
.delivery h3 { font-family: var(--serif); font-size: 24px; font-weight: 500; }
.delivery div { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.delivery span { min-width: 92px; padding: 11px 18px; color: var(--white); background: var(--ink); font-size: 11px; font-weight: 800; }

.faq { background: #f1f0ec; }
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 40px; margin-top: 50px; }
.faq details { border-top: 1px solid #bebbb3; }
.faq details:nth-last-child(-n + 2) { border-bottom: 1px solid #bebbb3; }
.faq summary { position: relative; display: flex; align-items: center; gap: 14px; padding: 23px 40px 23px 0; cursor: pointer; list-style: none; font-size: 13px; font-weight: 700; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "＋"; position: absolute; right: 5px; font-size: 17px; font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq summary span { color: var(--gold); font-size: 10px; letter-spacing: .1em; }
.faq details p { margin: -6px 0 22px 29px; color: var(--muted); font-size: 13px; line-height: 1.8; }

.final-cta { padding: 84px max(28px, calc((100vw - var(--max)) / 2)); display: grid; grid-template-columns: 1fr 400px; align-items: center; gap: 60px; color: var(--white); background: var(--ink); }
.final-cta h2 { margin: 0; font-family: var(--serif); font-size: clamp(42px, 5vw, 68px); font-weight: 500; line-height: 1.35; }
.final-cta p:not(.section-label) { color: #aaa69e; }
.service-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 24px; }
.service-tags span { padding: 7px 12px; border: 1px solid #4c4a45; border-radius: 999px; font-size: 10px; }
.contact-button { min-height: 100px; padding: 0 30px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 20px; color: var(--ink); background: var(--white); transition: transform .25s ease; }
.contact-button:hover { transform: translateY(-4px); }
.contact-button strong { text-align: center; font-family: var(--serif); font-size: 20px; }

.site-footer { padding: 46px max(28px, calc((100vw - var(--max)) / 2)); display: grid; grid-template-columns: 1fr auto; gap: 36px; align-items: center; color: #a6a39c; background: #050505; border-top: 1px solid #262626; font-size: 11px; }
.site-footer > div { display: grid; gap: 4px; color: var(--white); }
.site-footer > div strong { font-family: var(--serif); font-size: 17px; }
.site-footer > div span { color: var(--gold); font-size: 9px; letter-spacing: .18em; }
.site-footer nav { display: flex; gap: 22px; }
.site-footer p { grid-column: 1 / -1; margin: 0; }
.mobile-cta { display: none; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 980px) {
  .site-header { height: 68px; padding-inline: 22px; }
  .menu-button { display: block; }
  .global-nav { position: fixed; inset: 68px 0 auto; display: grid; gap: 0; padding: 18px 22px 24px; background: var(--paper); border-bottom: 1px solid var(--line); transform: translateY(-130%); transition: transform .25s ease; }
  .global-nav.is-open { transform: translateY(0); }
  .global-nav a { padding: 15px 0; border-bottom: 1px solid var(--line); }
  .global-nav .nav-cta { margin-top: 14px; padding: 15px 18px; text-align: center; }
  .hero { padding-top: 68px; grid-template-columns: 1fr; }
  .hero-copy { padding: 78px 28px 52px; }
  .hero h1 { font-size: clamp(48px, 13vw, 74px); }
  .hero-visual { min-height: 520px; clip-path: none; }
  .reason-grid, .service-grid { grid-template-columns: repeat(2, 1fr); }
  .reason-grid article:nth-child(3) { border-left: 0; }
  .reason-grid article { padding-block: 24px; }
  .about { grid-template-columns: 1fr; }
  .about-image { min-height: 480px; }
  .flow-list { grid-template-columns: repeat(3, 1fr); }
  .flow-list li:nth-child(4) { border-left: 0; }
  .works { grid-template-columns: 1fr; }
  .works-copy { padding: 70px 28px; }
  .works-strip { min-height: 270px; }
  .final-cta { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  body { padding-bottom: 74px; }
  .brand-ja { font-size: 16px; }
  .hero-copy { padding: 70px 22px 44px; }
  .hero h1 { font-size: 50px; line-height: 1.25; }
  .hero-services { font-size: 12px; line-height: 1.8; }
  .hero-lead { font-size: 14px; line-height: 1.9; }
  .button-row { display: grid; }
  .button { width: 100%; min-width: 0; }
  .hero-visual { min-height: 390px; }
  .hero-visual img { object-position: 51% center; }
  .section { padding: 82px 20px; }
  .section-label { margin-bottom: 15px; }
  .section-title { font-size: 38px; }
  .reasons { padding: 62px 20px; }
  .reason-grid { grid-template-columns: 1fr 1fr; margin-top: 26px; }
  .reason-grid article { padding: 22px 16px; border-left: 0; border-top: 1px solid #46433b; }
  .reason-grid article:nth-child(odd) { border-right: 1px solid #46433b; }
  .line-icon { margin-bottom: 12px; font-size: 30px; }
  .reason-grid h3 { font-size: 14px; }
  .reason-grid p { font-size: 11px; }
  .check-list { grid-template-columns: 1fr; gap: 13px; margin-top: 38px; }
  .concerns-answer { font-size: 22px; }
  .section-heading { display: block; margin-bottom: 38px; }
  .section-heading > p { margin-top: 20px; font-size: 13px; }
  .service-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .service-grid article { min-height: 195px; padding: 20px 16px; }
  .service-grid i { margin: 20px 0 14px; font-size: 25px; }
  .service-grid h3 { font-size: 17px; }
  .service-grid p { font-size: 10px; }
  .service-grid article:nth-child(7) { grid-column: 1 / -1; min-height: 170px; }
  .about-image { min-height: 360px; }
  .about-copy { padding: 70px 22px; }
  .about-copy > p:not(.section-label) { margin-top: 24px; font-size: 13px; }
  .role-row { gap: 7px; }
  .role-row span { padding: 8px; font-size: 8px; }
  .flow-list { grid-template-columns: 1fr 1fr; margin-top: 38px; }
  .flow-list li { min-height: 180px; padding: 20px 12px; border-top: 1px solid var(--line); }
  .flow-list li:nth-child(odd) { border-left: 0; }
  .flow-list li:not(:last-child)::after { display: none; }
  .works-strip { grid-template-columns: 1fr 1fr; }
  .works-strip div:nth-child(3), .works-strip div:nth-child(4) { border-top: 1px solid #333; }
  .spec-grid { grid-template-columns: 1fr 1fr; }
  .spec-grid article:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .spec-grid article:nth-child(4) { border-top: 1px solid var(--line); }
  .spec-grid article { padding: 25px 12px; }
  .delivery span { min-width: 74px; padding-inline: 12px; }
  .faq-grid { grid-template-columns: 1fr; margin-top: 36px; }
  .faq details:nth-last-child(2) { border-bottom: 0; }
  .final-cta { padding: 76px 22px; gap: 36px; }
  .final-cta h2 { font-size: 42px; }
  .contact-button { min-height: 82px; }
  .site-footer { grid-template-columns: 1fr; padding: 42px 22px; }
  .site-footer nav { flex-wrap: wrap; }
  .mobile-cta { position: fixed; z-index: 60; inset: auto 12px 12px; height: 56px; padding: 0 22px; display: flex; align-items: center; justify-content: space-between; color: var(--ink); background: linear-gradient(100deg, #e3bd61, #c48b14); border-radius: 999px; box-shadow: 0 14px 40px rgba(0,0,0,.24); font-size: 13px; font-weight: 800; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* Shared three-line mobile menu and footer treatment. */
@media (max-width: 980px) {
  .site-header {
    z-index: 1000;
  }

  .menu-button {
    position: relative;
    z-index: 1002;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    width: 50px;
    height: 52px;
    padding: 4px 0;
  }

  .menu-button span:not(.sr-only) {
    display: block;
    width: 30px;
    height: 1px;
    margin: 0 0 7px;
    background: currentColor;
    transform-origin: center;
    transition: transform .2s ease, opacity .2s ease;
  }

  .menu-button small {
    display: block;
    width: 100%;
    margin-top: 1px;
    font-size: 8px;
    line-height: 1;
    text-align: right;
    letter-spacing: .1em;
  }

  .menu-button[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .menu-button[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .menu-button[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .global-nav {
    position: fixed !important;
    inset: 72px 0 0 !important;
    z-index: 999 !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    justify-content: center !important;
    gap: 0 !important;
    min-height: calc(100dvh - 72px) !important;
    padding: 28px 24px 42px !important;
    color: var(--ink) !important;
    background: #f7f6f2 !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transform: none !important;
    pointer-events: none !important;
  }

  .global-nav.is-open {
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
  }

  .global-nav a {
    display: flex !important;
    justify-content: space-between !important;
    min-height: 60px !important;
    padding: 18px 4px !important;
    border-bottom: 1px solid var(--line) !important;
    color: var(--ink) !important;
  }

  .global-nav .nav-cta {
    margin-top: 14px !important;
    padding-inline: 20px !important;
    color: #fff !important;
    background: #111 !important;
    border-bottom-color: #111 !important;
  }

  .site-footer {
    gap: 22px;
    padding: 42px 22px;
  }

  .site-footer nav {
    gap: 18px;
  }

  .site-footer p {
    color: #7e7b75;
    font-size: 10px;
    letter-spacing: .04em;
  }
}