:root {
  --ink: #161616;
  --muted: #686868;
  --line: #d9d9d5;
  --paper: #f7f7f5;
  --soft: #ecece8;
  --white: #fff;
  --container: min(1180px, calc(100% - 80px));
  --serif: Georgia, "Times New Roman", "Yu Mincho", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Meiryo, "メイリオ", sans-serif; line-height: 1.8; letter-spacing: .035em; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.container { width: var(--container); margin-inline: auto; }
.skip-link { position: fixed; top: 12px; left: 12px; z-index: 100; padding: 8px 14px; color: var(--white); background: var(--ink); transform: translateY(-150%); transition: transform .2s; }
.skip-link:focus { transform: translateY(0); }

.site-header { position: fixed; inset: 0 0 auto; z-index: 20; background: rgba(247,247,245,.92); border-bottom: 1px solid transparent; transition: border-color .3s, background .3s; }
.site-header.scrolled { border-color: var(--line); background: rgba(247,247,245,.98); }
.header-inner { min-height: 92px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 13px; white-space: nowrap; }
.brand-mark { display: grid; width: 32px; height: 32px; color: var(--ink); place-items: center; }
.brand-mark svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: square; stroke-linejoin: bevel; }
.brand-name { font-size: 18px; font-weight: 700; letter-spacing: .12em; }
.global-nav { display: flex; align-items: center; gap: clamp(18px, 2.6vw, 42px); }
.global-nav a { position: relative; display: flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 700; letter-spacing: .08em; transition: opacity .2s; }
.global-nav a:not(.line-link)::after { position: absolute; right: 0; bottom: -10px; left: 0; height: 1px; content: ""; background: var(--ink); transform: scaleX(0); transform-origin: right; transition: transform .3s; }
.global-nav a:hover::after, .global-nav a.active::after { transform: scaleX(1); transform-origin: left; }
.global-nav a:hover { opacity: .65; }
.global-nav a span:not(.line-icon) { color: #999; font-size: 9px; font-weight: 400; letter-spacing: .03em; }
.line-link { gap: 9px !important; padding-left: 10px; border-left: 1px solid var(--line); }
.line-icon { display: inline-grid; min-width: 33px; height: 24px; padding-inline: 3px; color: var(--white); background: #111; border-radius: 7px; place-items: center; font-family: Arial, sans-serif; font-size: 8px; font-weight: 700; letter-spacing: -.04em; line-height: 1; }
.menu-toggle { display: none; border: 0; background: transparent; }

.hero { position: relative; min-height: 780px; overflow: hidden; background: var(--paper); }
.hero-bg-grid { position: absolute; inset: 0; opacity: .45; background-image: linear-gradient(to right, transparent calc(50% - 1px), #e6e6e2 50%, transparent calc(50% + 1px)), linear-gradient(to bottom, transparent 23%, #e4e4e0 23.1%, transparent 23.2%); background-size: 100% 100%, 100% 100%; pointer-events: none; }
.hero-inner { position: relative; display: grid; min-height: 780px; grid-template-columns: 1fr 1.15fr; align-items: center; gap: 5vw; }
.hero-copy { padding-top: 70px; }
.eyebrow, .section-index { margin: 0 0 28px; color: #737373; font-size: 10px; font-weight: 700; letter-spacing: .17em; line-height: 1.2; }
.eyebrow span, .section-index span { margin-left: 13px; color: #9c9c9c; font-size: 9px; font-weight: 400; }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { line-height: 1.35; }
h1 { margin-bottom: 28px; font-size: clamp(44px, 5.7vw, 80px); letter-spacing: .04em; font-weight: 700; }
h1 em, h2 em { font-family: var(--serif); font-style: italic; font-weight: 400; letter-spacing: .02em; }
.hero-lead { margin-bottom: 38px; font-size: 15px; line-height: 2.15; }
.text-link { display: inline-flex; align-items: center; gap: 20px; border-bottom: 1px solid var(--ink); padding-bottom: 8px; font-size: 12px; font-weight: 700; }
.text-link b { font-family: Arial, sans-serif; font-size: 19px; font-weight: 400; line-height: 1; transition: transform .2s; }
.text-link:hover b { transform: translate(4px, 4px); }
.hero-art { position: relative; min-height: 550px; padding-top: 65px; }
.hero-art svg { width: 100%; height: auto; overflow: visible; }
.hero-art path { fill: none; stroke: var(--ink); stroke-linecap: round; stroke-linejoin: round; }
.hero-art .thin { stroke-width: 1; }.hero-art .medium { stroke-width: 2; }.hero-art .bold { stroke-width: 3.5; }.hero-art .dash { stroke: #9a9a95; stroke-width: 1; stroke-dasharray: 3 7; }
.hero-art circle { fill: var(--paper); stroke: var(--ink); stroke-width: 1; }
.art-note { position: absolute; top: 75px; right: 4%; color: #a2a29d; font-size: 9px; letter-spacing: .18em; line-height: 1.5; }
.art-caption { position: absolute; right: 1%; bottom: 80px; font-family: var(--serif); font-size: 12px; font-style: italic; letter-spacing: .04em; }
.scroll-cue { position: absolute; bottom: 33px; left: 50%; display: flex; align-items: center; gap: 16px; color: #888; transform: translateX(-50%); }
.scroll-cue span { font-size: 9px; letter-spacing: .2em; }.scroll-cue i { display: block; width: 54px; height: 1px; background: #999; }

.section-pad { padding: 135px 0; }.intro { background: var(--white); }.intro-grid { display: grid; grid-template-columns: 1fr 2fr .7fr; gap: 40px; }.intro .section-index { padding-top: 8px; }.intro-content { max-width: 680px; }.intro-content h2, .section-heading h2 { margin-bottom: 30px; font-size: clamp(30px, 3.3vw, 48px); letter-spacing: .05em; }.intro-content h2 span { font-family: var(--serif); font-style: italic; font-weight: 400; }.intro-content p { max-width: 590px; color: #333; font-size: 14px; line-height: 2.2; }.intro-content .muted-copy { margin-top: 28px; color: #999; font-family: var(--serif); font-size: 13px; font-style: italic; }.intro-stamp { align-self: end; width: 112px; height: 112px; display: flex; flex-direction: column; align-items: center; justify-content: center; margin-bottom: 4px; border: 1px solid #b8b8b3; border-radius: 50%; transform: rotate(9deg); }.intro-stamp span { font-size: 11px; font-weight: 700; line-height: 1.45; text-align: center; }.intro-stamp small { margin-top: 5px; color: #999; font-family: Arial, sans-serif; font-size: 6px; letter-spacing: .12em; }

.section-dark { color: var(--white); background: var(--ink); }.section-heading { margin-bottom: 62px; }.section-heading h2 { margin-bottom: 18px; }.section-heading > p:last-child { color: #858581; font-size: 13px; line-height: 2; }.section-heading.light > p:last-child { color: #aaa; }.light .section-index, .light-index { color: #b5b5b0; }.light .section-index span, .light-index span { color: #6e6e69; }
.strength-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid #3d3d3d; }.strength-card { position: relative; min-height: 325px; padding: 32px 34px 36px 0; border-right: 1px solid #3d3d3d; }.strength-card + .strength-card { padding-left: 34px; }.strength-card:last-child { border-right: 0; }.card-number { margin-bottom: 45px; color: #777; font-family: Arial, sans-serif; font-size: 11px; letter-spacing: .1em; }.strength-card h3 { margin-bottom: 24px; font-size: 19px; line-height: 1.6; letter-spacing: .07em; }.strength-card > p:not(.card-number) { max-width: 280px; color: #999; font-size: 12px; line-height: 2; }.card-line { position: absolute; right: 34px; bottom: 34px; width: 36px; height: 1px; background: #777; }

.works { background: var(--paper); }.heading-row { display: flex; align-items: center; justify-content: space-between; gap: 30px; }.heading-row h2 { margin-bottom: 0; }.heading-row .text-link { margin-top: -8px; }.works-grid { display: grid; grid-template-columns: 1.25fr 1fr 1fr; gap: 20px; align-items: start; }.work-card-large { grid-row: span 2; }.work-visual { position: relative; min-height: 380px; overflow: hidden; background: #d8d8d2; isolation: isolate; }.work-card:not(.work-card-large) .work-visual { min-height: 270px; }.visual-label { position: absolute; z-index: 3; top: 19px; left: 20px; color: #666; font-family: Arial, sans-serif; font-size: 8px; letter-spacing: .14em; }.visual-courtyard { background: #cfcfc8; }.visual-flat { background: #dddcd6; }.visual-renovation { background: #babbb7; }.visual-shape { position: absolute; display: block; }.shape-house { right: 10%; bottom: 0; width: 66%; height: 71%; background: #f4f4ef; clip-path: polygon(0 28%, 53% 0, 100% 28%, 100% 100%, 0 100%); }.shape-house::before { position: absolute; top: 28%; left: 0; width: 100%; height: 1px; content: ""; background: #777; }.shape-window { right: 26%; bottom: 17%; width: 23%; height: 29%; border: 1px solid #696965; background: linear-gradient(90deg, transparent 48%, #696965 49%, #696965 51%, transparent 52%), linear-gradient(0deg, transparent 48%, #696965 49%, #696965 51%, transparent 52%); }.visual-courtyard::after { position: absolute; right: 7%; bottom: -30px; width: 30%; height: 45%; content: ""; border-radius: 50% 50% 0 0; background: #969993; z-index: -1; }.shape-flat { right: 7%; bottom: 0; width: 78%; height: 48%; border-top: 14px solid #f0f0ec; background: #ecece7; box-shadow: -30px 0 0 -18px #bfc0bc; }.shape-flat::after { position: absolute; top: 26%; left: 13%; width: 25%; height: 44%; content: ""; border: 1px solid #777; background: #c1c2be; }.shape-tree { left: 14%; bottom: 0; width: 24%; height: 58%; border-radius: 50% 50% 0 0; background: #989a94; }.shape-tree::after { position: absolute; bottom: 0; left: 46%; width: 2px; height: 53%; content: ""; background: #686965; }.shape-wall { inset: 0 0 auto; height: 68%; background: #e2e2dd; clip-path: polygon(0 12%, 100% 0, 100% 100%, 0 80%); }.shape-wall::after { position: absolute; right: 12%; bottom: 0; width: 33%; height: 46%; content: ""; border: 1px solid #777; background: repeating-linear-gradient(90deg, transparent 0 30px, #858580 31px 32px), repeating-linear-gradient(0deg, transparent 0 29px, #858580 30px 31px); }.shape-chair { bottom: 0; left: 12%; width: 29%; height: 57%; border: 2px solid #7d7e79; border-bottom: 0; border-radius: 35% 35% 0 0; }.shape-chair::after { position: absolute; bottom: -1px; left: 20%; width: 60%; height: 65%; content: ""; border-top: 2px solid #7d7e79; border-left: 2px solid #7d7e79; transform: skew(-20deg); }.work-meta { padding: 19px 0 28px; }.work-meta h3 { margin-bottom: 1px; font-size: 15px; letter-spacing: .08em; }.work-meta p { display: inline; margin-right: 14px; color: #777; font-size: 11px; }.work-meta span { color: #aaa; font-size: 10px; }

.section-soft { background: var(--soft); }.faq-grid { display: grid; grid-template-columns: .9fr 1.4fr; gap: 12vw; }.faq-list { border-top: 1px solid #aaa; }.faq-list details { border-bottom: 1px solid #aaa; }.faq-list summary { display: flex; align-items: center; gap: 22px; padding: 22px 0; cursor: pointer; list-style: none; font-size: 13px; font-weight: 700; }.faq-list summary::-webkit-details-marker { display: none; }.faq-list summary span { color: #999; font-family: var(--serif); font-size: 18px; font-style: italic; font-weight: 400; }.faq-list summary b { margin-left: auto; color: #777; font-size: 20px; font-weight: 400; transition: transform .2s; }.faq-list details[open] summary b { transform: rotate(45deg); }.faq-list details p { max-width: 600px; margin: -3px 40px 22px; color: #666; font-size: 12px; line-height: 2; }

.company { background: var(--white); }.company-grid { display: grid; grid-template-columns: .9fr 1.4fr; gap: 12vw; }.company-info { border-top: 1px solid var(--ink); }.company-info dl { margin: 0; }.company-info dl > div { display: grid; grid-template-columns: 150px 1fr; padding: 17px 0; border-bottom: 1px solid var(--line); }.company-info dt { color: #888; font-size: 11px; }.company-info dd { margin: 0; font-size: 13px; line-height: 1.9; }
.contact { padding: 125px 0 138px; text-align: center; }.contact-inner > .section-index { margin-bottom: 44px; }.contact h2 { margin-bottom: 22px; font-size: clamp(34px, 4.5vw, 62px); }.contact h2 em { font-size: 1.05em; }.contact p:not(.section-index) { color: #aaa; font-size: 13px; line-height: 2; }.contact-actions { display: flex; justify-content: center; gap: 18px; margin-top: 48px; }.line-button { display: inline-flex; min-width: 260px; align-items: center; justify-content: center; gap: 13px; padding: 18px 21px; color: var(--ink); background: var(--white); font-size: 12px; font-weight: 700; transition: opacity .2s, transform .2s; }.line-button:hover { opacity: .85; transform: translateY(-2px); }.line-button b { margin-left: auto; font-family: Arial, sans-serif; font-size: 18px; font-weight: 400; }.phone-link { display: flex; min-width: 260px; flex-direction: column; align-items: flex-start; justify-content: center; padding: 13px 21px; border: 1px solid #4b4b4b; text-align: left; }.phone-link small, .phone-link span { color: #999; font-size: 9px; }.phone-link strong { font-family: Arial, sans-serif; font-size: 20px; letter-spacing: .08em; line-height: 1.5; }
.site-footer { background: var(--paper); }.footer-inner { display: flex; min-height: 100px; align-items: center; justify-content: space-between; gap: 20px; }.footer-brand .brand-name { font-size: 14px; }.footer-inner p { margin: 0; color: #999; font-family: Arial, sans-serif; font-size: 9px; letter-spacing: .1em; }.back-to-top { display: grid; width: 38px; height: 38px; border: 1px solid #aaa; place-items: center; font-family: Arial, sans-serif; font-size: 18px; transition: background .2s, color .2s; }.back-to-top:hover { color: var(--white); background: var(--ink); }
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .75s ease, transform .75s ease; }.reveal.is-visible { opacity: 1; transform: translateY(0); }.reveal-delay { transition-delay: .12s; }.reveal-delay-2 { transition-delay: .22s; }

@media (max-width: 800px) {
  :root { --container: min(100% - 40px, 620px); }
  .header-inner { min-height: 76px; }.brand-name { font-size: 16px; }.menu-toggle { display: inline-flex; align-items: center; gap: 10px; padding: 12px 0 12px 12px; cursor: pointer; }.menu-toggle-label { color: #777; font-size: 9px; letter-spacing: .1em; }.menu-icon { display: flex; width: 22px; flex-direction: column; gap: 5px; }.menu-icon i { display: block; width: 100%; height: 1px; background: var(--ink); transition: transform .2s; }.menu-toggle[aria-expanded="true"] .menu-icon i:first-child { transform: translateY(3px) rotate(45deg); }.menu-toggle[aria-expanded="true"] .menu-icon i:last-child { transform: translateY(-3px) rotate(-45deg); }
  .global-nav { position: absolute; top: 76px; right: 0; left: 0; display: grid; max-height: 0; padding: 0 20px; overflow: hidden; background: rgba(247,247,245,.98); transition: max-height .35s ease, padding .35s ease; }.global-nav.is-open { max-height: 410px; padding: 12px 20px 23px; border-bottom: 1px solid var(--line); }.global-nav a { justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--line); }.global-nav a::after { display: none; }.global-nav .line-link { padding-left: 0; border-left: 0; }
  .hero { min-height: 770px; }.hero-inner { min-height: 770px; grid-template-columns: 1fr; align-items: start; padding-top: 150px; }.hero-copy { padding-top: 0; }.hero-art { position: absolute; right: -7%; bottom: 60px; width: 90%; min-height: 0; opacity: .7; }.art-note { top: 10px; }.art-caption { bottom: 14px; }.scroll-cue { bottom: 17px; }
  .section-pad { padding: 88px 0; }.intro-grid, .faq-grid, .company-grid { grid-template-columns: 1fr; gap: 34px; }.intro-stamp { width: 94px; height: 94px; margin-top: 12px; }.intro-stamp span { font-size: 10px; }.section-heading { margin-bottom: 42px; }.strength-list { grid-template-columns: 1fr; }.strength-card, .strength-card + .strength-card { min-height: auto; padding: 27px 0 42px; border-right: 0; border-bottom: 1px solid #3d3d3d; }.strength-card:first-child { padding-top: 26px; }.strength-card:last-child { border-bottom: 0; }.card-number { margin-bottom: 22px; }.strength-card h3 { margin-bottom: 16px; }.card-line { right: 0; bottom: 25px; }
  .heading-row { align-items: flex-end; }.works-grid { grid-template-columns: 1fr; gap: 0; }.work-card-large { grid-row: auto; }.work-visual, .work-card:not(.work-card-large) .work-visual { min-height: 260px; }.work-card-large .work-visual { min-height: 310px; }.work-meta { padding-bottom: 34px; }.contact { padding: 90px 0 100px; }.contact-actions { flex-direction: column; align-items: stretch; margin-top: 35px; }.line-button, .phone-link { min-width: 0; }.footer-inner { min-height: 130px; flex-wrap: wrap; padding-block: 24px; }.footer-inner p { order: 3; width: 100%; }
}

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; } }