:root {
  --deep: #0e1a16;
  --forest: #234638;
  --green: #72b48d;
  --bone: #f4f1e8;
  --warm: #fbf9f3;
  --ink: #18201c;
  --muted: #667069;
  --border: #d8d4c8;
  --gold: #b38b4d;
  --serif: "Noto Serif JP", serif;
  --sans: "Noto Sans JP", sans-serif;
  --study-height: 0px;
}

* { box-sizing: border-box; }
html { color-scheme: light; scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: #d9d7d0; font-family: var(--sans); }
body.study-mode { --study-height: 72px; }
body:not(.study-mode) .study-bar, body:not(.study-mode) .variant-note { display: none; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible { outline: 3px solid var(--gold); outline-offset: 4px; }
[hidden] { display: none !important; }

.skip-link { position: fixed; z-index: 100; top: 10px; left: 10px; padding: 10px 14px; background: white; transform: translateY(-160%); }
.skip-link:focus { transform: none; }

.study-bar {
  position: relative;
  z-index: 20;
  min-height: var(--study-height);
  padding: 12px clamp(16px, 3vw, 40px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: #151a18;
  color: #f5f3eb;
  border-bottom: 1px solid #ffffff24;
}
.study-bar__title { display: grid; gap: 2px; white-space: nowrap; }
.study-bar__title strong { font: 500 13px/1.2 var(--sans); letter-spacing: .12em; text-transform: uppercase; }
.study-bar__title span { color: #ffffff99; font-size: 11px; }
.study-tabs { display: flex; gap: 7px; }
.study-tab { min-height: 44px; padding: 8px 16px; border: 1px solid #ffffff2e; background: transparent; color: #ffffffa6; font: 500 12px var(--sans); cursor: pointer; }
.study-tab span { display: inline-grid; width: 20px; height: 20px; place-items: center; margin-right: 6px; border: 1px solid currentColor; border-radius: 50%; font-family: ui-monospace, monospace; font-size: 10px; }
.study-tab:hover { color: white; border-color: #ffffff80; }
.study-tab.is-active { color: #16201b; background: var(--bone); border-color: var(--bone); }

.study-panel { min-height: calc(100svh - var(--study-height)); }
.hero { position: relative; min-height: calc(100svh - var(--study-height)); overflow: hidden; }
.site-header { position: relative; z-index: 5; height: 76px; padding: 0 clamp(20px, 4.5vw, 72px); display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 36px; }
.site-header--dark, .site-header--overlay { color: #f5f2e9; border-bottom: 1px solid #ffffff25; }
.site-header--light { color: var(--ink); border-bottom: 1px solid var(--border); }
.brand { display: inline-flex; align-items: baseline; gap: 10px; text-decoration: none; white-space: nowrap; }
.brand b { font-size: 19px; letter-spacing: .04em; }
.brand span { font-size: 12px; letter-spacing: .1em; }
.site-nav { justify-self: end; display: flex; gap: clamp(18px, 2.4vw, 36px); }
.site-nav a { padding-block: 14px; font-size: 13px; text-decoration: none; }
.site-nav a:hover { text-decoration: underline; text-underline-offset: 6px; }
.header-cta { min-height: 44px; padding: 0 18px; display: inline-flex; align-items: center; border: 1px solid #d2b77a; color: #ead9ac; font-size: 12px; text-decoration: none; }
.header-cta--dark { color: var(--deep); border-color: var(--deep); }
.menu-button { display: none; width: 44px; height: 44px; border: 0; background: transparent; padding: 12px 8px; }
.menu-button span { display: block; height: 1px; margin: 7px 0; background: currentColor; }
.mobile-menu{position:fixed;inset:0;z-index:1000;padding:24px clamp(22px,6vw,72px) 32px;color:#f3efe6;background:#10241c;overflow:auto}.mobile-menu[hidden]{display:none}.mobile-menu__top{display:flex;align-items:center;justify-content:space-between;padding-bottom:22px;border-bottom:1px solid #ffffff2d}.mobile-menu__top .brand{color:inherit}.mobile-menu__close{min-width:44px;min-height:44px;border:0;color:inherit;background:transparent;font:11px var(--sans);letter-spacing:.08em}.mobile-menu nav{margin-top:28px;border-top:1px solid #ffffff2d}.mobile-menu nav a{min-height:64px;display:grid;grid-template-columns:42px 1fr;align-items:center;border-bottom:1px solid #ffffff2d;color:inherit;font:500 clamp(18px,5.4vw,25px) var(--serif);text-decoration:none}.mobile-menu nav span{color:#94b7a2;font:9px ui-monospace,monospace}.mobile-menu__cta{min-height:58px;margin-top:26px;padding:0 20px;display:flex;align-items:center;justify-content:space-between;color:#173126;background:#efeadd;font-size:13px;text-decoration:none}.menu-open{overflow:hidden}

.eyebrow { margin: 0 0 28px; color: #d1c7ae; font-size: 12px; letter-spacing: .2em; }
.eyebrow--dark { color: var(--forest); }
.lead { max-width: 640px; margin: 28px 0 0; color: #e6e0d3c7; font: 400 clamp(14px, 1.25vw, 18px)/2 var(--sans); }
.lead--dark { color: #4e5953; }
.hero-actions { margin-top: 34px; display: flex; flex-wrap: wrap; align-items: center; gap: 22px; }
.button { min-height: 50px; padding: 0 22px; display: inline-flex; align-items: center; justify-content: center; gap: 18px; border: 1px solid transparent; font-size: 13px; text-decoration: none; transition: transform .2s ease, background-color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button:disabled { cursor: not-allowed; opacity: .72; transform: none; }
.button--gold { color: #151a18; background: #c4a665; }
.button--green { color: white; background: var(--forest); }
.button--ivory { color: var(--deep); background: var(--bone); }
.text-link { padding-block: 12px; font-size: 13px; text-underline-offset: 6px; }
.text-link--light { color: #eee9dd; }
.variant-note { position: absolute; z-index: 5; right: 28px; bottom: 18px; margin: 0; color: #ffffff87; font: 10px ui-monospace, monospace; letter-spacing: .05em; }
.variant-note--dark { color: #34443c9c; }
.mobile-only { display: none; }

/* A — quiet architectural question */
.hero-a { color: #f5f2e9; background: #10192c; }
.hero-a::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(10,18,35,.98) 0%, rgba(12,23,40,.91) 42%, rgba(10,20,34,.35) 78%), url("./assets/fv/o-hero-city.webp") center/cover; }
.hero-a::after { content: ""; position: absolute; inset: 0; opacity: .42; background-image: linear-gradient(90deg, transparent 49.9%, #ffffff12 50%, transparent 50.1%), linear-gradient(0deg, transparent 49.9%, #ffffff0a 50%, transparent 50.1%); background-size: 120px 120px; }
.hero-a__content { position: relative; z-index: 3; width: min(790px, 62vw); padding: clamp(70px, 10vh, 130px) 0 70px clamp(24px, 10vw, 156px); }
.hero-a h1 { margin: 0; font: 400 clamp(40px, 4.05vw, 66px)/1.47 var(--serif); letter-spacing: .01em; text-wrap: balance; }
.hero-a h1 em { color: #d3b36a; font-style: normal; }
.service-line { margin: 28px 0 0; color: #d6d2c7; font-size: 12px; line-height: 1.8; letter-spacing: .12em; }
.hero-a__architecture { position: absolute; z-index: 2; right: 5vw; bottom: 0; width: 37vw; height: 78%; opacity: .22; }
.building { position: absolute; bottom: 0; border: 1px solid #e8e2d04a; background: linear-gradient(90deg, #ffffff0a 50%, transparent 50%); background-size: 48px 100%; }
.building::after { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(0deg, transparent 0 52px, #e8e2d024 53px 54px); }
.building--one { left: 0; width: 34%; height: 58%; }
.building--two { left: 29%; width: 39%; height: 88%; }
.building--three { right: 0; width: 38%; height: 70%; }
.rain { position: absolute; top: 0; width: 1px; height: 24%; background: linear-gradient(transparent, #d3b36a); transform: rotate(8deg); }
.rain--one { left: 15%; }.rain--two { left: 52%; top: 8%; }.rain--three { right: 8%; top: 2%; }

/* B — educational cause/effect */
.hero-b { color: var(--ink); background: var(--bone); }
.hero-b::before { content: ""; position: absolute; inset: 76px 0 0; pointer-events: none; background: linear-gradient(90deg, transparent 49.95%, #2a453a12 50%, transparent 50.05%); }
.hero-b::after { content: ""; position: absolute; inset: 76px 50% 56px 0; pointer-events: none; opacity: .68; background: linear-gradient(90deg, transparent 62%, var(--bone) 100%), linear-gradient(0deg, transparent 76%, var(--bone) 100%), url("./assets/fv/o-owner.webp") center bottom/cover no-repeat; filter: saturate(.8) contrast(1.1); }
.hero-b__grid { position: relative; z-index: 2; width: min(1200px, calc(100% - 48px)); min-height: calc(100svh - var(--study-height) - 132px); margin: 0 auto; padding: clamp(55px, 10vh, 110px) 0 88px; display: grid; grid-template-columns: 1.06fr .94fr; align-items: center; gap: clamp(50px, 8vw, 128px); }
.hero-b__copy h1 { margin: 0; font: 500 clamp(40px, 4.25vw, 66px)/1.48 var(--serif); letter-spacing: .01em; text-wrap: balance; }
.hero-b__copy h1 em { color: #397257; font-style: normal; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 12px; }
.cycle-card { position: relative; padding: clamp(28px, 4vw, 56px); color: #ece9df; background: var(--deep); box-shadow: 20px 24px 0 #2c4a3b14; }
.cycle-card__label { margin: 0 0 36px; color: #80a28f; font: 10px ui-monospace, monospace; letter-spacing: .2em; }
.cycle-step { display: grid; grid-template-columns: 40px 1fr; gap: 2px 14px; align-items: baseline; }
.cycle-step span { grid-row: 1 / span 2; color: #81b596; font: 10px ui-monospace, monospace; }
.cycle-step b { font: 500 18px var(--serif); }
.cycle-step small { color: #b9bdb7; font-size: 11px; }
.cycle-line { width: 1px; height: 36px; margin: 8px 0 8px 19px; background: linear-gradient(#81b596, #81b59633); }
.cycle-break { margin: 36px -18px -18px 36px; padding: 22px; display: grid; grid-template-columns: 28px 1fr; gap: 12px; background: #f1eee4; color: var(--deep); transform: rotate(-1deg); }
.cycle-break > span { color: var(--gold); font-size: 22px; }
.cycle-break p { margin: 0; font-size: 12px; line-height: 1.8; }
.cycle-break b { font-family: var(--serif); font-size: 17px; }
.service-ribbon { position: absolute; z-index: 3; left: 0; right: 0; bottom: 0; min-height: 56px; margin: 0; padding: 17px 5vw; display: flex; justify-content: center; align-items: center; gap: 24px; color: #e6e2d8; background: #20392f; font-size: 11px; letter-spacing: .1em; }
.service-ribbon i { width: 3px; height: 3px; border-radius: 50%; background: var(--green); }

/* B — full story prototype */
.home-story { background: var(--warm); }
.story-section { position: relative; padding: clamp(88px, 11vw, 156px) clamp(20px, 5vw, 72px); overflow: hidden; }
.section-shell { width: min(1160px, 100%); margin-inline: auto; }
.section-index { margin: 0 0 25px; color: #4c745f; font: 10px ui-monospace, monospace; letter-spacing: .18em; }
.section-index--light { color: #8fbaa0; }
.section-heading { max-width: 610px; }
.section-heading h2, .story-section h2 { margin: 0; font: 500 clamp(34px, 4.25vw, 58px)/1.5 var(--serif); letter-spacing: .01em; }
.section-heading > p:last-child, .record-intro > p:last-child { margin: 30px 0 0; color: var(--muted); font-size: clamp(15px, 1.2vw, 17px); line-height: 2; }
.section-heading--center { margin-inline: auto; text-align: center; }
.coating-section .section-heading--center { max-width: 820px; }
.reason-section { background: var(--warm); }
.reason-grid { display: grid; grid-template-columns: .83fr 1.17fr; align-items: center; gap: clamp(56px, 9vw, 130px); }
.surface-diagram { position: relative; margin: 0; min-height: 520px; background: #ddd8cc; overflow: hidden; }
.surface-diagram figcaption { position: absolute; z-index: 4; left: 18px; bottom: 15px; color: #55625b; font-size: 10px; letter-spacing: .04em; }
.wall-section { position: absolute; inset: 0 0 42px; display: grid; grid-template-columns: 30% 10% 60%; overflow: hidden; }
.wall-section__outside { position: relative; display: grid; place-items: center; align-content: center; gap: 22px; color: #34463d; background: linear-gradient(135deg, #e9e6dd, #c9d1cd); }
.wall-section__outside p, .wall-section__inside > p { margin: 0; font-size: 11px; letter-spacing: .08em; }
.rain-drop { position: absolute; width: 9px; height: 22px; border-radius: 60% 40% 55% 45%; background: #729e98; transform: rotate(35deg); }
.rain-drop--one { top: 22%; left: 30%; }.rain-drop--two { top: 36%; right: 24%; width: 7px; height: 17px; }
.dirt-particle { position: absolute; border-radius: 50%; background: #715f4c; }
.dirt-particle--one { width: 12px; height: 12px; top: 49%; left: 25%; }.dirt-particle--two { width: 8px; height: 8px; top: 58%; right: 28%; }
.entry-arrow { color: var(--gold); font-size: 38px; line-height: 1; }
.wall-section__surface { position: relative; z-index: 2; display: grid; place-items: center; color: #f3f0e8; background: repeating-linear-gradient(0deg, #6e766f 0 42px, #818981 43px 45px); box-shadow: 8px 0 18px #15231c33; }
.wall-section__surface span { padding: 10px 5px; background: #263b32; font-size: 10px; letter-spacing: .12em; writing-mode: vertical-rl; }
.wall-section__inside { position: relative; padding: 28px; overflow: hidden; color: #35463e; background-color: #c8c0b1; background-image: radial-gradient(circle at 15% 20%, #948a7845 0 4px, transparent 5px), radial-gradient(circle at 70% 72%, #877d6b52 0 6px, transparent 7px), radial-gradient(circle at 42% 48%, #a89f904d 0 3px, transparent 4px); background-size: 80px 70px, 110px 100px, 65px 60px; }
.pore { position: absolute; border: 2px solid #6f6658; border-left-color: transparent; border-radius: 50%; opacity: .75; }
.pore--one { width: 70px; height: 34px; top: 24%; left: 12%; transform: rotate(18deg); }.pore--two { width: 96px; height: 42px; top: 48%; left: 38%; transform: rotate(-12deg); }.pore--three { width: 54px; height: 28px; bottom: 17%; right: 12%; }
.stain-flow { position: absolute; left: 0; height: 9px; border-radius: 0 50% 50% 0; background: linear-gradient(90deg, #4d7166, #745f4ba6 68%, transparent); transform-origin: left center; }
.stain-flow::after { content: ""; position: absolute; right: 4px; top: -5px; width: 17px; height: 17px; border-radius: 50%; background: #715b47; }
.stain-flow--one { width: 58%; top: 34%; transform: rotate(8deg); }.stain-flow--two { width: 78%; top: 57%; transform: rotate(-6deg); }
.inside-label { position: absolute; z-index: 3; right: 24px; bottom: 30px; width: min(260px, 78%); padding: 18px; color: #f1eee5; background: #13221cde; }
.inside-label b { display: block; font: 500 16px var(--serif); }.inside-label small { display: block; margin-top: 7px; color: #b9c1bc; font-size: 10px; line-height: 1.6; }
.shift-section { color: #f0eee5; background: var(--deep); }
.shift-grid { display: grid; grid-template-columns: 1fr .85fr; align-items: center; gap: clamp(60px, 10vw, 150px); }
.shift-answer { padding-left: clamp(24px, 5vw, 70px); border-left: 1px solid #ffffff2b; }
.shift-answer p { margin: 0; color: #b8c2bb; font-size: 16px; }
.shift-arrow { display: block; margin: 25px 0; color: var(--gold); font-size: 28px; }
.shift-answer .shift-answer__strong { color: #f3f0e6; font: 500 clamp(24px, 2.5vw, 35px)/1.65 var(--serif); }
.shift-answer small { display: block; margin-top: 28px; color: #93a098; font-size: 12px; line-height: 1.8; }
.shift-answer small em { display: block; margin-top: 9px; color: #f1eee5; font: 500 18px var(--serif); font-style: normal; }
.prevention-metaphor { grid-column: 1 / -1; margin: clamp(44px, 7vw, 90px) 0 0; display: grid; grid-template-columns: 1.15fr .85fr; background: #101b27; border: 1px solid #ffffff20; }
.prevention-metaphor img { width: 100%; height: 100%; min-height: 390px; display: block; object-fit: cover; object-position: center; }
.prevention-metaphor figcaption { padding: clamp(30px, 5vw, 64px); display: flex; flex-direction: column; justify-content: center; }
.prevention-metaphor figcaption > span { color: #9db5a7; font-size: 11px; letter-spacing: .13em; }
.prevention-metaphor figcaption > b { margin-top: 22px; color: #f2eee5; font: 500 clamp(24px, 2.6vw, 36px)/1.65 var(--serif); }
.prevention-metaphor figcaption > p { margin: 24px 0 0; color: #bdc7c1; font-size: 14px; line-height: 2; }
.prevention-metaphor figcaption > small { margin-top: 30px; padding-top: 16px; border-top: 1px solid #ffffff24; color: #84928a; font-size: 10px; line-height: 1.7; }
.coating-section { background: #efede5; }
.purpose-pair { margin-top: clamp(60px, 8vw, 100px); display: grid; grid-template-columns: 1fr 110px 1fr; align-items: center; }
.purpose-photo { margin: clamp(60px, 8vw, 100px) 0 0; overflow: hidden; border: 1px solid var(--border); background: var(--warm); }
.purpose-photo img { width: 100%; height: auto; display: block; }
.purpose-photo__labels { display: grid; grid-template-columns: 1fr 1fr; }
.purpose-photo__labels > span { padding: clamp(22px, 3vw, 36px); display: grid; gap: 9px; }
.purpose-photo__labels > span + span { border-left: 1px solid var(--border); }
.purpose-photo__labels small { color: #47775d; font: 10px ui-monospace, monospace; letter-spacing: .14em; }
.purpose-photo__labels b { font: 500 clamp(21px, 2.4vw, 30px) var(--serif); }
.purpose-photo__labels em { color: var(--muted); font-size: 12px; font-style: normal; }
.purpose-photo figcaption { padding: 10px 18px; color: #7a817c; border-top: 1px solid var(--border); font-size: 9px; line-height: 1.6; }
.purpose { min-height: 430px; padding: clamp(28px, 4vw, 54px); border: 1px solid var(--border); background: var(--warm); }
.purpose__label { margin: 0; color: #668072; font: 10px ui-monospace, monospace; letter-spacing: .2em; }
.building-cutaway { position: relative; height: 190px; margin: 38px 0; overflow: hidden; border: 1px solid #aab0aa; background: #e8e5dc; }
.building-cutaway span { position: absolute; display: block; }
.building-roof { left: 10%; right: 10%; top: 14%; height: 10px; background: #7b827d; }
.building-floor { left: 10%; right: 10%; height: 7px; background: #8e9690; }
.floor--one { top: 45%; }.floor--two { top: 72%; }
.building-column { top: 14%; bottom: 15%; width: 9px; background: #7b827d; }
.column--one { left: 28%; }.column--two { right: 28%; }
.building-skin { inset: 8% 6%; border: 4px solid #b6bbb6; }
.building-cutaway b { position: absolute; z-index: 2; left: 50%; bottom: 14px; padding: 7px 11px; color: #f2efe7; background: #1e352b; font-size: 11px; transform: translateX(-50%); white-space: nowrap; }
.building-cutaway--structure .building-roof, .building-cutaway--structure .building-floor, .building-cutaway--structure .building-column { background: var(--forest); box-shadow: 0 0 0 3px #72b48d38; }
.building-cutaway--structure .building-skin { border-color: #b8bcb7; }
.building-cutaway--surface .building-roof, .building-cutaway--surface .building-floor, .building-cutaway--surface .building-column { background: #a8aea9; }
.building-cutaway--surface .building-skin { border: 7px solid #3f785b; box-shadow: inset 0 0 0 3px #72b48d4d, 0 0 0 3px #72b48d35; }
.purpose h3 { margin: 0; font: 500 clamp(24px, 2.3vw, 32px) var(--serif); }
.purpose > p:last-child { margin: 15px 0 0; color: var(--muted); font-size: 14px; line-height: 1.9; }
.purpose-connector { position: relative; height: 1px; background: #8a9e92; }
.purpose-connector span { position: absolute; left: 50%; top: 50%; padding: 8px; background: #efede5; color: #69756e; font-size: 10px; white-space: nowrap; transform: translate(-50%, -50%); }
.metaphor-note { margin: 22px 0 0; color: #717971; font-size: 11px; line-height: 1.8; text-align: center; }
.detail-link-panel { margin-top: 42px; padding: clamp(28px, 4vw, 44px); display: flex; align-items: center; justify-content: space-between; gap: 28px; color: #f4f1e8; background: var(--forest); box-shadow: 14px 14px 0 #18332818; }
.detail-link-panel div { display: grid; gap: 8px; }
.detail-link-panel small { color: #94bea5; font: 10px ui-monospace, monospace; letter-spacing: .14em; }
.detail-link-panel b { font: 500 clamp(17px, 2vw, 22px) var(--serif); }
.detail-link-panel__action { min-height: 48px; padding: 0 20px; display: inline-flex; align-items: center; gap: 28px; border: 1px solid #a8c7b5; background: #f4f1e8; color: var(--deep); font-size: 13px; font-weight: 600; text-decoration: none; white-space: nowrap; }
.detail-link-panel__action:hover { background: white; }
.choice-section { color: #f0ede5; background: #20392f; }
.choice-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(60px, 10vw, 140px); }
.choice-section .section-heading > p:last-child { color: #b9c4bd; }
.choice-details { min-width: 0; }
.protection-methods { position: relative; margin: 0; overflow: hidden; border: 1px solid #ffffff2e; background: #13231c; }
.protection-methods img { width: 100%; height: auto; display: block; }
.method-photo-labels { display: grid; grid-template-columns: 1fr 1fr; }
.method-photo-labels > span { padding: 15px 18px; border-top: 1px solid #ffffff28; }
.method-photo-labels > span + span { border-left: 1px solid #ffffff28; }
.method-photo-labels b { display: block; color: #f1eee5; font: 500 15px var(--serif); }
.method-photo-labels small { display: block; margin-top: 5px; color: #aebbb3; font-size: 9px; line-height: 1.6; }
.protection-methods figcaption { padding: 10px 18px; color: #819087; background: #0f1d17; font-size: 9px; line-height: 1.6; }
.method-note { margin: 17px 0 30px; color: #d2d8d4; font-size: 11px; line-height: 1.8; }
.choice-list { margin: 0; border-top: 1px solid #ffffff31; }
.choice-list > div { padding: 24px 0; display: grid; grid-template-columns: .65fr 1.35fr; gap: 26px; border-bottom: 1px solid #ffffff31; }
.choice-list dt { color: #8fbaa0; font-size: 12px; }
.choice-list dd { margin: 0; font: 400 16px/1.7 var(--serif); }
.xop-section { background: var(--bone); }
.xop-grid { display: grid; grid-template-columns: .85fr 1.15fr; align-items: center; gap: clamp(60px, 10vw, 140px); }
.xop-mechanism { position: relative; margin: 0; overflow: hidden; border: 1px solid #aaa99f; background: #111b18; }
.xop-mechanism img { width: 100%; height: auto; min-height: 490px; display: block; object-fit: cover; }
.xop-photo-labels { position: absolute; left: 18px; right: 18px; bottom: 44px; display: flex; justify-content: space-between; gap: 12px; }
.xop-photo-labels span { padding: 9px 12px; color: #f4f1e8; background: #102019df; font-size: 11px; }
.xop-mechanism figcaption { padding: 11px 15px; color: #b5beb8; background: #14231d; font-size: 9px; line-height: 1.6; }
.xop-points { margin: 28px 0 0; padding: 0; list-style: none; border-top: 1px solid #c9c5b9; }
.xop-points li { padding: 16px 0; display: grid; grid-template-columns: 30px 1fr; gap: 13px; border-bottom: 1px solid #c9c5b9; }
.xop-points li > span { color: #47775d; font: 10px ui-monospace, monospace; }
.xop-points b { display: block; font: 500 15px var(--serif); }
.xop-points small { display: block; margin-top: 5px; color: #69726b; font-size: 10px; line-height: 1.7; }
.draft-note { margin: 22px 0 0; padding: 13px 16px; border-left: 2px solid var(--gold); color: #6e736e; background: #eae5d8; font-size: 11px; line-height: 1.8; }
.text-link--prominent { display: inline-block; margin-top: 26px; color: var(--forest); font-weight: 600; }
.evidence-section { background: #e8e5dc; }
.evidence-heading { display: grid; grid-template-columns: 1fr .7fr; align-items: end; gap: clamp(50px, 9vw, 120px); }
.evidence-heading h2 { margin: 0; font: 500 clamp(34px, 4.25vw, 58px)/1.5 var(--serif); }
.evidence-heading > p { margin: 0 0 8px; color: var(--muted); font-size: 14px; line-height: 2; }
.evidence-pair { margin-top: clamp(48px, 7vw, 88px); display: grid; grid-template-columns: 1fr 1fr; gap: clamp(14px, 2.5vw, 34px); }
.evidence-pair figure { margin: 0; background: var(--warm); }
.evidence-pair img { width: 100%; height: auto; display: block; aspect-ratio: 601 / 431; object-fit: cover; }
.evidence-pair figcaption { padding: 18px 20px 21px; display: flex; align-items: baseline; justify-content: space-between; gap: 20px; }
.evidence-pair figcaption span { color: #47775d; font: 10px ui-monospace, monospace; letter-spacing: .15em; }
.evidence-pair figcaption b { font: 500 14px var(--serif); }
.evidence-note { margin: 18px 0 0; color: #747b75; font-size: 10px; line-height: 1.7; }
.record-section { color: #eeeae0; background: var(--deep); }
.record-grid { display: grid; grid-template-columns: 1fr .85fr; align-items: center; gap: clamp(60px, 10vw, 140px); }
.record-intro > p:last-child { color: #acb6af; }
.record-photo { margin: 0; overflow: hidden; background: #16251f; }
.record-photo img { width: 100%; height: auto; display: block; }
.record-photo figcaption { padding: 10px 14px; color: #8d9a92; font-size: 9px; line-height: 1.6; }
.record-process { grid-column: 1 / -1; padding: clamp(26px, 4vw, 46px); color: var(--ink); background: #f0ede4; }
.record-process__title { margin: 0 0 24px; padding-bottom: 16px; border-bottom: 2px solid var(--forest); font: 500 22px var(--serif); }
.record-process ol { margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); list-style: none; }
.record-process li { padding: 8px clamp(18px, 3vw, 34px); display: grid; grid-template-columns: 30px 1fr; gap: 13px; border-right: 1px solid #c9c7bf; }
.record-process li:first-child { padding-left: 0; }.record-process li:last-child { padding-right: 0; border-right: 0; }
.record-process li > span { color: #397257; font: 10px ui-monospace, monospace; }
.record-process li b { display: block; font: 500 16px var(--serif); }
.record-process li small { display: block; margin-top: 7px; color: #68716b; line-height: 1.6; }
.record-process .draft-note { margin-bottom: 0; }
.audience-section { background: var(--warm); }
.audience-links { margin-top: 60px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--border); }
.audience-links a { min-height: 245px; padding: 32px; display: grid; grid-template-columns: 1fr auto; align-content: space-between; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); text-decoration: none; transition: background-color .2s ease, color .2s ease; }
.audience-links a:first-child { border-left: 1px solid var(--border); }
.audience-links a:hover { color: white; background: var(--forest); }
.audience-links small { grid-column: 1 / -1; color: #748077; font: 10px ui-monospace, monospace; letter-spacing: .15em; }
.audience-links b { align-self: end; font: 500 20px var(--serif); }
.audience-links p { grid-column: 1 / -1; margin: 18px 0 0; color: #68716b; font-size: 12px; line-height: 1.8; }
.audience-links a:hover p { color: #d2dbd5; }
.audience-links span { color: var(--gold); font-size: 20px; }
.contact-section { color: #f3efe6; background: #263e34; }
.contact-grid { display: grid; grid-template-columns: 1fr .85fr; align-items: center; gap: clamp(60px, 10vw, 140px); }
.contact-copy > p { margin: 0 0 28px; color: #c4cbc6; font-size: 15px; line-height: 2; }
.contact-steps { margin: 0 0 30px; padding: 0; list-style: none; border-top: 1px solid #ffffff31; }
.contact-steps li { padding: 15px 0; display: grid; grid-template-columns: 32px 1fr; gap: 4px 12px; border-bottom: 1px solid #ffffff31; }
.contact-steps li > span { grid-row: 1 / span 2; color: #8fbaa0; font: 10px ui-monospace, monospace; }
.contact-steps b { font: 500 14px var(--serif); }
.contact-steps small { color: #9eaaa3; font-size: 10px; line-height: 1.6; }
.contact-copy .button { width: 100%; }
.contact-copy small { display: block; margin-top: 18px; color: #98a49d; font-size: 10px; line-height: 1.7; }

/* C — diagnostic observation */
.hero-c { color: #f5f2e9; background: var(--deep); }
.hero-c::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, #0b1613 0%, #0d1916e8 48%, #10201b47 100%), url("./assets/fv/o-streaks.webp") right center/56% 100% no-repeat; filter: saturate(.75); }
.hero-c__content { position: relative; z-index: 3; width: min(800px, 65vw); padding: clamp(70px, 9vh, 116px) 0 72px clamp(24px, 9vw, 138px); }
.hero-c h1 { margin: 0; font: 400 clamp(38px, 3.85vw, 61px)/1.5 var(--serif); text-wrap: balance; }
.hero-c h1 em { color: #8dca9f; font-style: normal; }
.surface-study { position: absolute; z-index: 2; top: 76px; right: 0; bottom: 0; width: 45%; overflow: hidden; opacity: .7; }
.surface-study__stone { position: absolute; inset: 0; background: linear-gradient(90deg, #101e19 0%, transparent 20%), url("./assets/fv/surface-detail.jpg") center/cover; mix-blend-mode: luminosity; opacity: .65; }
.surface-study__stone::after { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(90deg, transparent 0 104px, #ffffff19 105px 106px), repeating-linear-gradient(0deg, transparent 0 104px, #ffffff19 105px 106px); }
.surface-study__stain { position: absolute; border: 1px solid #9bd0acb5; border-radius: 50%; }
.stain--one { width: 190px; height: 190px; top: 16%; right: 16%; }
.stain--two { width: 100px; height: 100px; top: 54%; left: 16%; }
.surface-study__water { position: absolute; width: 1px; background: linear-gradient(#89c9a100, #89c9a1, #89c9a100); }
.water--one { height: 54%; top: 8%; right: 34%; transform: rotate(6deg); }
.water--two { height: 36%; top: 45%; left: 37%; transform: rotate(-4deg); }
.surface-study__measure { position: absolute; right: 24px; bottom: 28px; display: grid; gap: 8px; color: #d9e7db; font: 9px ui-monospace, monospace; letter-spacing: .12em; }
.surface-study__measure span::before { content: "—"; margin-right: 8px; color: #84bd98; }
.observation-tags { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 8px; }
.observation-tags span { padding: 7px 11px; border: 1px solid #ffffff2b; color: #c9d6cc; font-size: 10px; letter-spacing: .08em; }

/* XOP detail page */
.subpage { background: var(--warm); }
.subpage-header { position: sticky; top: 0; background: rgba(251, 249, 243, .96); backdrop-filter: blur(12px); }
.subpage-home { display: none; min-height: 44px; align-items: center; font-size: 12px; text-underline-offset: 5px; }
.subpage-hero { padding: clamp(88px, 11vw, 150px) clamp(20px, 5vw, 72px); background: var(--warm); }
.subpage-hero .section-shell { max-width: 960px; }
.subpage-hero h1 { max-width: 860px; margin: 0; font: 500 clamp(40px, 5.4vw, 72px)/1.45 var(--serif); }
.subpage-hero > .section-shell > p:not(.section-index) { max-width: 650px; margin: 34px 0 0; color: var(--muted); font-size: clamp(15px, 1.2vw, 17px); line-height: 2; }
.prevention-section { padding: 0 clamp(20px, 5vw, 72px) clamp(88px, 11vw, 156px); color: #f0eee5; background: var(--warm); }
.prevention-section .prevention-metaphor { margin-top: 0; background: var(--deep); }
.about-next { padding: clamp(82px, 10vw, 136px) clamp(20px, 5vw, 72px); color: #f3efe6; background: var(--deep); text-align: center; }
.about-next p { margin: 0 0 22px; color: #9eb0a5; font-size: 12px; letter-spacing: .1em; }
.about-next h2 { margin: 0; font: 500 clamp(32px, 4vw, 52px)/1.55 var(--serif); }
.about-next .button { margin-top: 38px; }

/* Building record detail page */
.record-detail-hero { padding: clamp(82px, 10vw, 136px) clamp(20px, 5vw, 72px); color: #f3efe6; background: var(--deep); }
.record-detail-hero__grid { display: grid; grid-template-columns: .82fr 1.18fr; align-items: center; gap: clamp(48px, 8vw, 110px); }
.record-detail-hero h1 { margin: 0; font: 500 clamp(39px, 5vw, 68px)/1.5 var(--serif); }
.record-detail-hero p:not(.section-index) { margin: 30px 0 0; color: #b7c1bb; font-size: 16px; line-height: 2; }
.record-detail-hero .button { margin-top: 34px; }
.record-detail-photo { margin: 0; background: #172720; }
.record-detail-photo img { width: 100%; height: auto; display: block; }
.record-detail-photo figcaption { padding: 11px 15px; color: #8d9a92; font-size: 9px; line-height: 1.6; }
.record-detail-section { padding: clamp(88px, 11vw, 156px) clamp(20px, 5vw, 72px); background: var(--warm); }
.record-detail-heading { display: grid; grid-template-columns: 1fr .75fr; align-items: end; gap: clamp(48px, 9vw, 120px); }
.record-detail-heading h2, .record-sheet-copy h2 { margin: 0; font: 500 clamp(34px, 4.25vw, 58px)/1.5 var(--serif); }
.record-detail-heading > p, .record-sheet-copy > p:last-child { margin: 0; color: var(--muted); font-size: 15px; line-height: 2; }
.record-detail-steps { margin: clamp(56px, 8vw, 96px) 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); list-style: none; border-top: 1px solid var(--border); border-left: 1px solid var(--border); }
.record-detail-steps li { min-height: 390px; padding: 18px; display: flex; flex-direction: column; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.record-detail-steps span { color: #47775d; font: 10px ui-monospace, monospace; }
.record-detail-steps img { width: 100%; height: auto; aspect-ratio: 4/3; margin: 16px 0 22px; object-fit: cover; filter: saturate(.78); }
.record-detail-steps b { margin-top: auto; font: 500 20px var(--serif); }
.record-detail-steps p { margin: 15px 0 0; color: var(--muted); font-size: 12px; line-height: 1.8; }
.record-sheet-section { padding: clamp(88px, 11vw, 156px) clamp(20px, 5vw, 72px); background: #e8e5dc; }
.record-sheet-grid { display: grid; grid-template-columns: .82fr 1.18fr; align-items: center; gap: clamp(48px, 9vw, 130px); }
.record-sheet-copy > p:last-child { margin-top: 28px; }
.record-sheet { padding: clamp(26px, 4vw, 44px); background: var(--warm); box-shadow: 16px 18px 0 #223d3112; }
.record-sheet header { padding-bottom: 20px; display: flex; align-items: baseline; justify-content: space-between; gap: 20px; border-bottom: 2px solid var(--forest); }
.record-sheet header span { color: #47775d; font: 9px ui-monospace, monospace; letter-spacing: .14em; }
.record-sheet header b { font: 500 22px var(--serif); }
.record-sheet dl { margin: 0; }
.record-sheet dl > div { padding: 18px 0; display: grid; grid-template-columns: .7fr 1.3fr; gap: 20px; border-bottom: 1px solid var(--border); }
.record-sheet dt { color: #617068; font-size: 11px; }
.record-sheet dd { margin: 0; font: 500 14px var(--serif); }
.record-sheet > p { margin: 20px 0 0; color: #747b75; font-size: 9px; line-height: 1.7; }

/* Building owner page */
.building-hero { padding: clamp(88px, 11vw, 150px) clamp(20px, 5vw, 72px); background: #efede5; }
.building-hero__grid { display: grid; grid-template-columns: 1fr .75fr; align-items: center; gap: clamp(60px, 10vw, 140px); }
.building-hero h1 { margin: 0; font: 500 clamp(39px, 5vw, 68px)/1.5 var(--serif); }
.building-hero > .section-shell > div:first-child > p:not(.section-index) { max-width: 620px; margin: 30px 0 0; color: var(--muted); font-size: 16px; line-height: 2; }
.building-hero .button { margin-top: 34px; }
.building-hero__cycle { padding: clamp(28px, 4vw, 46px); color: #eef0e9; background: var(--deep); }
.building-hero__cycle > span { float: left; width: 36px; color: #8fbaa0; font: 10px ui-monospace, monospace; }
.building-hero__cycle p { margin: 0 0 27px 36px; padding-bottom: 24px; border-bottom: 1px solid #ffffff28; }
.building-hero__cycle b { display: block; font: 500 17px var(--serif); }
.building-hero__cycle small { display: block; margin-top: 7px; color: #aab5ae; font-size: 10px; }
.building-hero__cycle strong { display: block; padding: 20px; color: var(--deep); background: var(--bone); font: 500 17px/1.7 var(--serif); }
.service-proof-overview { padding: clamp(82px, 9vw, 128px) clamp(20px, 5vw, 72px); color: #f2efe6; background: var(--forest); }
.proof-overview-heading { max-width: 780px; }
.proof-overview-heading h2 { margin: 0; font: 500 clamp(34px, 4.25vw, 58px)/1.5 var(--serif); }
.proof-overview-heading > p:last-child { margin: 24px 0 0; color: #bdc9c1; font-size: 15px; line-height: 2; }
.relation-heading { max-width: 800px; }
.relation-heading h2 { margin: 0; font: 500 clamp(34px, 4.25vw, 58px)/1.5 var(--serif); }
.relation-heading > p:last-child { max-width: 620px; margin: 26px 0 0; color: var(--muted); font-size: 15px; line-height: 2; }
.relation-map { margin-top: clamp(48px, 7vw, 78px); display: grid; grid-template-columns: .9fr 1.1fr; gap: 18px; }
.relation-map article { padding: clamp(26px, 3vw, 38px); display: flex; flex-direction: column; border: 1px solid #beb9ad; background: var(--warm); }
.relation-map__primary { min-height: 330px; color: #f2efe6; background: var(--forest) !important; border-color: var(--forest) !important; }
.relation-map__support { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.relation-map__support article { min-height: 330px; }
.relation-map small { color: #47775d; font: 10px ui-monospace, monospace; letter-spacing: .1em; }
.relation-map__primary small { color: #9fc4ae; }
.relation-map b { margin-top: auto; font: 500 clamp(20px, 2.2vw, 27px)/1.55 var(--serif); }
.relation-map p { margin: 15px 0 0; color: var(--muted); font-size: 11px; line-height: 1.8; }
.relation-map__primary p { color: #bdc9c1; }
.proof-title { margin: clamp(50px, 7vw, 82px) 0 20px; font: 500 22px var(--serif); }
.service-proof { margin-top: clamp(42px, 6vw, 72px); display: grid; grid-template-columns: repeat(3, 1fr); color: #f2efe6; border-top: 1px solid #ffffff38; border-bottom: 1px solid #ffffff38; }
.service-proof > div { min-height: 190px; padding: 30px; border-right: 1px solid #ffffff2b; }
.service-proof > div:last-child { border-right: 0; }
.service-proof > div > small { color: #9fc4ae; font: 9px ui-monospace, monospace; letter-spacing: .12em; }
.service-proof strong { display: block; margin-top: 18px; color: #d7c08b; font: 500 clamp(27px, 3vw, 39px)/1.3 var(--serif); }
.service-proof p { margin: 20px 0 0; font-size: 12px; line-height: 1.8; }
.service-proof p em { display: block; margin-top: 5px; color: #aebbb3; font-size: 9px; font-style: normal; }
.service-proof-note { margin: 18px 0 0; color: #aebbb3; font-size: 10px; line-height: 1.8; }
.published-works { margin-top: 44px; padding-top: 34px; display: grid; grid-template-columns: .7fr 1.3fr; gap: 26px 60px; border-top: 1px solid #bdb8ac; }
.published-works small { color: #47775d; font: 9px ui-monospace, monospace; letter-spacing: .14em; }
.published-works h3 { margin: 10px 0 0; font: 500 22px var(--serif); }
.published-works ul { margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); list-style: none; border-top: 1px solid #bdb8ac; border-left: 1px solid #bdb8ac; }
.published-works li { min-height: 90px; padding: 22px; display: grid; place-items: center; border-right: 1px solid #bdb8ac; border-bottom: 1px solid #bdb8ac; font: 500 16px var(--serif); text-align: center; }
.published-works__pending { margin: 0; padding: 26px; border: 1px solid #bdb8ac; color: var(--muted); background: var(--warm); font-size: 13px; line-height: 1.8; }
.published-works > p { grid-column: 2; margin: 0; color: #707871; font-size: 9px; line-height: 1.7; }
.published-works > .published-works__pending { font-size: 13px; }
.building-areas, .building-path { padding: clamp(88px, 11vw, 156px) clamp(20px, 5vw, 72px); background: var(--warm); }
.building-area-grid { margin-top: clamp(52px, 7vw, 86px); display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--border); border-left: 1px solid var(--border); }
.building-area-grid article { min-height: 260px; padding: 30px; display: flex; flex-direction: column; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.building-area-grid small { color: #47775d; font: 9px ui-monospace, monospace; letter-spacing: .14em; }
.building-area-grid h3 { margin: auto 0 0; font: 500 24px var(--serif); }
.building-area-grid p { margin: 17px 0 0; color: var(--muted); font-size: 12px; line-height: 1.9; }
.building-evidence { padding: clamp(88px, 11vw, 156px) clamp(20px, 5vw, 72px); color: #f2efe6; background: var(--forest); }
.building-evidence .evidence-pair { color: var(--ink); }
.evidence-note--dark { color: #aebbb3; }
.building-path { background: #e8e5dc; }
.building-path h2 { margin: 0; font: 500 clamp(34px, 4.25vw, 58px)/1.5 var(--serif); }
.building-path ol { margin: 54px 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); list-style: none; border-top: 1px solid #bdb9ae; }
.building-path li { min-height: 150px; padding: 24px 20px; border-right: 1px solid #bdb9ae; border-bottom: 1px solid #bdb9ae; }
.building-path li:first-child { border-left: 1px solid #bdb9ae; }
.building-path li span { display: block; color: #47775d; font: 10px ui-monospace, monospace; }
.building-path li b { display: block; margin-top: 48px; font: 500 15px var(--serif); }

/* Home owner page */
.house-hero { padding: clamp(100px, 14vw, 190px) clamp(20px, 7vw, 100px); background: linear-gradient(110deg, #f4f1e8 0 72%, #dfe6df 72%); }
.house-hero .section-shell { max-width: 1080px; }
.house-hero h1 { max-width: 900px; margin: 0; font: 500 clamp(40px, 5.5vw, 74px)/1.5 var(--serif); }
.house-hero p:not(.section-index) { max-width: 650px; margin: 30px 0 0; color: var(--muted); font-size: 16px; line-height: 2; }
.house-hero .button { margin-top: 36px; }
.house-timing, .house-example { padding: clamp(88px, 11vw, 156px) clamp(20px, 5vw, 72px); background: var(--warm); }
.house-timing-grid { margin-top: clamp(56px, 8vw, 96px); display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.house-timing-grid article { min-height: 370px; padding: clamp(28px, 4vw, 46px); display: flex; flex-direction: column; border: 1px solid var(--border); background: #efede5; }
.house-timing-grid article:last-child { color: #f3efe6; background: var(--forest); border-color: var(--forest); }
.house-timing-grid small { color: #47775d; font: 9px ui-monospace, monospace; letter-spacing: .14em; }
.house-timing-grid article:last-child small { color: #9fc4ae; }
.house-timing-grid span { margin-top: 20px; color: var(--gold); font: 12px ui-monospace, monospace; }
.house-timing-grid h3 { margin: auto 0 0; font: 500 clamp(25px, 3vw, 36px)/1.6 var(--serif); }
.house-timing-grid p { margin: 20px 0 0; color: var(--muted); font-size: 13px; line-height: 2; }
.house-timing-grid article:last-child p { color: #bdc9c1; }
.house-places { padding: clamp(88px, 11vw, 156px) clamp(20px, 5vw, 72px); color: #f3efe6; background: var(--deep); }
.house-places h2, .house-flow h2 { margin: 0; font: 500 clamp(34px, 4.25vw, 58px)/1.5 var(--serif); }
.house-place-list { margin-top: clamp(48px, 7vw, 84px); display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid #ffffff31; border-left: 1px solid #ffffff31; }
.house-place-list article { min-height: 230px; padding: 26px; border-right: 1px solid #ffffff31; border-bottom: 1px solid #ffffff31; }
.house-place-list span { color: #8fbaa0; font: 10px ui-monospace, monospace; }
.house-place-list h3 { margin: 70px 0 0; font: 500 20px var(--serif); }
.house-place-list p { color: #aeb8b2; font-size: 11px; line-height: 1.8; }
.house-places .draft-note { color: #b7bdb9; background: #1a2b24; }
.house-example { background: #e8e5dc; }
.house-flow { padding: clamp(88px, 11vw, 150px) clamp(20px, 5vw, 72px); color: #f3efe6; background: var(--forest); }
.house-flow ol { margin: 50px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); list-style: none; border-top: 1px solid #ffffff32; }
.house-flow li { min-height: 150px; padding: 24px; border-right: 1px solid #ffffff32; border-bottom: 1px solid #ffffff32; }
.house-flow li:first-child { border-left: 1px solid #ffffff32; }
.house-flow li span { display: block; color: #9fc4ae; font: 10px ui-monospace, monospace; }
.house-flow li b { display: block; margin-top: 48px; font: 500 15px var(--serif); }
.house-flow > .section-shell > p:last-child { margin: 24px 0 0; color: #bdc9c1; font-size: 12px; }

/* Partner page */
.partner-hero { padding: clamp(104px, 14vw, 190px) clamp(20px, 7vw, 100px); color: #f3efe6; background: var(--deep); }
.partner-hero h1 { margin: 0; font: 500 clamp(44px, 6.2vw, 82px)/1.45 var(--serif); }
.partner-hero p:not(.section-index) { max-width: 640px; margin: 30px 0 0; color: #b8c3bc; font-size: 16px; line-height: 2; }
.partner-hero .button { margin-top: 36px; }
.partner-work, .partner-start { padding: clamp(88px, 11vw, 156px) clamp(20px, 5vw, 72px); background: var(--warm); }
.partner-work-grid { margin-top: clamp(52px, 7vw, 86px); display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--border); border-left: 1px solid var(--border); }
.partner-work-grid article { min-height: 245px; padding: 26px; display: flex; flex-direction: column; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.partner-work-grid span { color: #47775d; font: 10px ui-monospace, monospace; }
.partner-work-grid b { margin-top: auto; font: 500 17px/1.6 var(--serif); }
.partner-work-grid p { color: var(--muted); font-size: 11px; line-height: 1.8; }
.partner-fit { padding: clamp(88px, 11vw, 156px) clamp(20px, 5vw, 72px); color: #f3efe6; background: var(--forest); }
.partner-fit h2 { margin: 0; font: 500 clamp(34px, 4.25vw, 58px)/1.5 var(--serif); }
.partner-fit ul { margin: 52px 0 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; list-style: none; border-top: 1px solid #ffffff32; border-left: 1px solid #ffffff32; }
.partner-fit li { min-height: 120px; padding: 28px; border-right: 1px solid #ffffff32; border-bottom: 1px solid #ffffff32; font: 500 15px/1.8 var(--serif); }
.partner-fit .draft-note { color: #bdc9c1; background: #1c382d; }
.partner-start ol { margin: 52px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); list-style: none; border-top: 1px solid var(--border); }
.partner-start li { min-height: 150px; padding: 25px; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.partner-start li:first-child { border-left: 1px solid var(--border); }
.partner-start span { color: #47775d; font: 10px ui-monospace, monospace; }
.partner-start b { display: block; margin-top: 48px; font: 500 16px var(--serif); }

/* FAQ page */
.faq-hero { padding: clamp(92px, 12vw, 166px) clamp(20px, 7vw, 100px); background: #efede5; }
.faq-hero h1 { margin: 0; font: 500 clamp(42px, 5.8vw, 78px)/1.5 var(--serif); }
.faq-hero p:not(.section-index) { margin: 28px 0 0; color: var(--muted); font-size: 16px; }
.faq-list-section { padding: clamp(80px, 10vw, 140px) clamp(20px, 5vw, 72px); background: var(--warm); }
.faq-layout { display: grid; grid-template-columns: 230px 1fr; align-items: start; gap: clamp(50px, 9vw, 130px); }
.faq-layout > nav { position: sticky; top: 110px; display: grid; border-top: 1px solid var(--border); }
.faq-layout > nav a { min-height: 52px; padding: 16px 0; border-bottom: 1px solid var(--border); color: var(--muted); font-size: 12px; text-decoration: none; }
.faq-list > section + section { margin-top: 88px; }
.faq-list h2 { margin: 0 0 34px; font: 500 clamp(29px, 3.4vw, 44px)/1.5 var(--serif); }
.faq-list details { border-top: 1px solid var(--border); }
.faq-list details:last-child { border-bottom: 1px solid var(--border); }
.faq-list summary { min-height: 72px; padding: 22px 46px 22px 0; display: flex; align-items: center; position: relative; cursor: pointer; font: 500 17px/1.7 var(--serif); list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 8px; color: #47775d; font: 300 24px var(--sans); }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { margin: 0; padding: 0 54px 28px 0; color: var(--muted); font-size: 14px; line-height: 2; }

/* Why buildings get dirty */
.why-hero { padding: clamp(100px, 14vw, 190px) clamp(20px, 7vw, 100px); color: #f3efe6; background: var(--deep); }
.why-hero h1 { margin: 0; font: 500 clamp(42px, 6vw, 80px)/1.48 var(--serif); }
.why-hero p:not(.section-index) { margin: 30px 0 0; color: #b7c1bb; font-size: 16px; line-height: 2; }.why-hero .button{margin-top:34px}
.why-cycle,.why-shift { padding: clamp(88px,11vw,156px) clamp(20px,5vw,72px); background:var(--warm) }
.why-cycle ol { margin:60px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);list-style:none;border-top:1px solid var(--border);border-left:1px solid var(--border) }
.why-cycle li{min-height:230px;padding:26px;border-right:1px solid var(--border);border-bottom:1px solid var(--border)}.why-cycle li span{color:#47775d;font:10px ui-monospace,monospace}.why-cycle li b{display:block;margin-top:70px;font:500 20px var(--serif)}.why-cycle li p{color:var(--muted);font-size:11px;line-height:1.8}
.why-places{padding:clamp(88px,11vw,156px) clamp(20px,5vw,72px);color:#f3efe6;background:var(--forest)}.why-places h2,.why-shift h2{margin:0;font:500 clamp(34px,4.25vw,58px)/1.5 var(--serif)}.why-places>.section-shell>div{margin-top:56px;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid #ffffff32;border-left:1px solid #ffffff32}.why-places article{min-height:250px;padding:28px;border-right:1px solid #ffffff32;border-bottom:1px solid #ffffff32}.why-places small{color:#9fc4ae}.why-places h3{margin:70px 0 0;font:500 21px var(--serif)}.why-places article p{color:#bdc9c1;font-size:11px;line-height:1.8}.why-shift p:not(.section-index){max-width:680px;color:var(--muted);line-height:2}.why-shift .button{margin-top:30px}

.why-cycle li{min-height:360px;padding:18px}.why-cycle li img{width:100%;height:auto;aspect-ratio:4/3;margin:16px 0 22px;object-fit:cover;filter:saturate(.75)}.why-cycle li b{margin-top:0}

/* Works page */
.works-case--light{color:var(--ink)!important;background:#e8e4da!important}.works-case--light dl,.works-case--light dl div{border-color:#1b2d2630!important}.works-case--light dt{color:#47775d}.works-case--light .works-caution{color:#66716a}
.works-hero{padding:clamp(96px,13vw,180px) clamp(20px,7vw,100px);background:#efede5}.works-hero h1{margin:0;font:500 clamp(42px,5.8vw,78px)/1.5 var(--serif)}.works-hero p:not(.section-index){max-width:640px;margin:28px 0 0;color:var(--muted);font-size:16px;line-height:2}.works-case{padding:clamp(88px,11vw,156px) clamp(20px,5vw,72px);color:#f3efe6;background:var(--forest)}.works-case header{display:grid;grid-template-columns:1fr .7fr;align-items:end;gap:60px}.works-case h2,.works-standard h2{margin:0;font:500 clamp(34px,4.25vw,58px)/1.5 var(--serif)}.works-case dl{margin:0;border-top:1px solid #ffffff31}.works-case dl div{padding:13px 0;display:grid;grid-template-columns:.7fr 1.3fr;border-bottom:1px solid #ffffff31}.works-case dt{color:#9fc4ae;font-size:10px}.works-case dd{margin:0;font-size:12px}.works-case .evidence-pair{color:var(--ink)}.works-caution{margin:18px 0 0;color:#adbbb3;font-size:10px;line-height:1.8}.works-standard{padding:clamp(88px,11vw,156px) clamp(20px,5vw,72px);background:var(--warm)}.works-standard>.section-shell>div{margin-top:54px;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--border);border-left:1px solid var(--border)}.works-standard article{min-height:180px;padding:25px;border-right:1px solid var(--border);border-bottom:1px solid var(--border)}.works-standard article span{color:#47775d;font:10px ui-monospace,monospace}.works-standard article b{display:block;margin-top:48px;font:500 18px var(--serif)}.works-standard article p{color:var(--muted);font-size:11px}

/* Story page */
.story-bridge{padding:clamp(90px,12vw,160px) clamp(20px,7vw,100px);color:#f5f0e7;background:#1d3f31}.story-bridge h2{margin:10px 0 24px;font:500 clamp(32px,4.3vw,58px)/1.65 var(--serif)}.story-bridge p:not(.section-index){max-width:720px;color:#c2cfc7;line-height:2}.story-bridge .button{margin-top:34px}
.story-hero{position:relative;min-height:min(800px,86vh);display:grid;align-items:end;color:#f6f1e7;background:#13251e;overflow:hidden}.story-hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.54)}.story-hero>div{position:relative;z-index:1;width:min(1180px,calc(100% - 40px));margin:0 auto;padding:clamp(110px,15vw,190px) 0 72px}.story-hero h1{margin:0;font:500 clamp(46px,7vw,92px)/1.42 var(--serif)}.story-hero p:last-child{margin:24px 0 0;font:400 clamp(15px,1.7vw,21px)/2 var(--serif)}.story-declaration{padding:clamp(90px,13vw,180px) clamp(20px,7vw,100px);background:#ebe7dd;text-align:center}.story-declaration h2{margin:24px auto;font:500 clamp(30px,4.2vw,56px)/1.7 var(--serif)}.story-declaration p{max-width:760px;margin:0 auto;color:var(--muted);line-height:2.2}.story-declaration p:first-child{color:#47775d;font-size:11px;letter-spacing:.08em}.story-chapter{padding:clamp(90px,12vw,160px) clamp(20px,6vw,84px);background:#f5f2ea}.story-chapter>.section-shell>header{max-width:760px;margin-bottom:clamp(70px,10vw,130px)}.story-chapter header h2{margin:8px 0 22px;font:500 clamp(38px,5vw,68px)/1.5 var(--serif)}.story-chapter header>p:last-child{color:var(--muted);line-height:2}.story-scene{margin:0 0 clamp(100px,14vw,190px);display:grid;grid-template-columns:1.08fr .92fr;align-items:center;gap:clamp(34px,7vw,100px)}.story-scene--reverse img{order:2}.story-scene img{width:100%;aspect-ratio:3/2;object-fit:cover}.story-scene small{color:#47775d;font:10px ui-monospace,monospace;letter-spacing:.14em}.story-scene h3{margin:22px 0;font:500 clamp(27px,3.3vw,46px)/1.65 var(--serif)}.story-scene p{color:var(--muted);line-height:2.15}.story-chapter--dark{color:#f5f0e7;background:#142820}.story-chapter--dark header>p:last-child,.story-chapter--dark .story-scene p{color:#bdc8c0}.story-chapter--dark .story-scene small{color:#9fc4ae}.story-ending{padding:clamp(110px,15vw,210px) clamp(20px,7vw,100px);color:#f5f0e7;background:#0e1d17;text-align:center}.story-ending p{color:#9fc4ae}.story-ending h2{margin:24px auto 48px;font:500 clamp(32px,4.7vw,62px)/1.7 var(--serif)}

/* Content-led card imagery */
.house-timing-grid article::before,.house-place-list article::before,.building-area-grid article::before,.partner-work-grid article::before,.works-standard article::before,.why-places article::before{content:"";display:block;width:100%;aspect-ratio:16/9;margin:0 0 24px;background-position:center;background-size:cover;filter:saturate(.78)}
.house-timing-grid article{min-height:500px}.house-timing-grid article::before{aspect-ratio:2/1;margin-bottom:22px}.house-timing-grid article:nth-child(1)::before{background-image:url('./assets/story/house-01.jpg')}.house-timing-grid article:nth-child(2)::before{background-image:url('./assets/fv/o-owner.webp');background-position:center 35%}.house-timing-grid h3{margin:auto 0 0}
.house-place-list article{min-height:350px;padding:18px}.house-place-list article:nth-child(1)::before{background-image:url('./assets/works/akasaka-before.jpg')}.house-place-list article:nth-child(2)::before{background-image:url('./assets/works/stone-before.jpg')}.house-place-list article:nth-child(3)::before{background-image:url('./assets/fv/o-streaks.webp')}.house-place-list article:nth-child(4)::before{background-image:url('./assets/fv/surface-detail.jpg')}.house-place-list h3{margin:22px 0 0}
.building-area-grid article{min-height:390px;padding:18px}.building-area-grid article:nth-child(1)::before{background-image:url('./assets/story/building-02.jpg')}.building-area-grid article:nth-child(2)::before{background-image:url('./assets/fv/o-streaks.webp')}.building-area-grid article:nth-child(3)::before{background-image:url('./assets/works/akasaka-before.jpg')}.building-area-grid h3{margin:auto 0 0}
.partner-work-grid article{min-height:370px;padding:18px}.partner-work-grid article:nth-child(1)::before{background-image:url('./assets/fv/o-owner.webp')}.partner-work-grid article:nth-child(2)::before{background-image:url('./assets/works/stone-before.jpg')}.partner-work-grid article:nth-child(3)::before{background-image:url('./assets/fv/xop-stone-protection-v2.png')}.partner-work-grid article:nth-child(4)::before{background-image:url('./assets/fv/annual-inspection-record-v1.png')}.partner-work-grid b{margin-top:auto}
.works-standard article{min-height:330px;padding:18px}.works-standard article:nth-child(1)::before{background-image:url('./assets/fv/annual-inspection-record-v1.png')}.works-standard article:nth-child(2)::before{background-image:url('./assets/story/house-02.jpg')}.works-standard article:nth-child(3)::before{background-image:url('./assets/works/akasaka-after.jpg')}.works-standard article:nth-child(4)::before{background-image:url('./assets/story/house-03.jpg')}.works-standard article b{margin-top:0}
.why-places article{min-height:380px;padding:18px}.why-places article:nth-child(1)::before{background-image:url('./assets/fv/o-streaks.webp')}.why-places article:nth-child(2)::before{background-image:url('./assets/works/akasaka-before.jpg')}.why-places article:nth-child(3)::before{background-image:url('./assets/fv/o-pores.webp')}.why-places h3{margin:22px 0 0}
.house-flow li,.building-path li,.partner-start li{min-height:110px}.house-flow li b,.building-path li b,.partner-start li b{margin-top:24px}

@media (max-width: 920px) {
  .site-nav, .header-cta { display: none; }
  .site-header { grid-template-columns: 1fr auto; height: 68px; }
  .menu-button { display: block; color: inherit; }
  .subpage-home { display: inline-flex; }
  .hero-a__content, .hero-c__content { width: 82vw; }
  .hero-b__grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .reason-grid, .shift-grid, .choice-grid, .xop-grid, .record-grid, .contact-grid { gap: 48px; }
  .record-detail-hero__grid, .record-sheet-grid { gap: 48px; }
  .building-hero__grid { gap: 48px; }
  .record-detail-steps { grid-template-columns: repeat(2, 1fr); }
  .works-case header { grid-template-columns: 1fr; }
  .story-scene{grid-template-columns:1fr}.story-scene--reverse img{order:0}
  .relation-map { grid-template-columns: 1fr; }
  .relation-map__primary { min-height: 250px; }
  .relation-map__support article { min-height: 250px; }
}

@media (max-width: 680px) {
  body.study-mode { --study-height: 116px; }
  .study-bar { align-items: flex-start; flex-direction: column; gap: 9px; }
  .study-bar__title { display: flex; align-items: baseline; gap: 8px; }
  .study-tabs { width: 100%; display: grid; grid-template-columns: repeat(3, 1fr); }
  .study-tab { padding: 7px 4px; font-size: 10px; }
  .study-tab span { display: none; }
  .hero { min-height: calc(100svh - var(--study-height)); }
  .site-header { padding-inline: 20px; }
  .brand b { font-size: 17px; }
  .brand span { font-size: 10px; }
  .desktop-only { display: none; }
  .mobile-only { display: initial; }
  .eyebrow { margin-bottom: 20px; font-size: 10px; line-height: 1.8; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 8px; margin-top: 26px; }
  .button { width: 100%; }
  .variant-note { display: none; }

  .hero-a::before { background: linear-gradient(180deg, rgba(10,18,35,.65) 0%, rgba(10,18,35,.96) 48%, #0a1223 100%), url("./assets/fv/o-hero-city.webp") 66% top/auto 54% no-repeat; }
  .hero-a::after { background-size: 80px 80px; }
  .hero-a__content { width: auto; padding: clamp(82px, 14vh, 132px) 22px 44px; }
  .hero-a h1 { font-size: clamp(29px, 8.5vw, 36px); line-height: 1.58; }
  .hero-a h1 em { white-space: nowrap; }
  .hero-a__architecture { display: none; }
  .service-line { padding-top: 16px; border-top: 1px solid #ffffff2b; }

  .hero-b__grid { width: auto; min-height: auto; padding: 54px 20px 116px; grid-template-columns: 1fr; gap: 44px; }
  .hero-b::after { inset: 68px 0 66px; opacity: .48; background: linear-gradient(180deg, var(--bone) 0%, transparent 15%, var(--bone) 80%), url("./assets/fv/o-owner.webp") center 28%/100% auto no-repeat; }
  .hero-b__copy h1 { font-size: clamp(31px, 9.4vw, 42px); line-height: 1.55; }
  .hero-b__copy h1 em { text-underline-offset: 7px; }
  .cycle-card { padding: 28px 24px; }
  .cycle-break { margin-left: 20px; }
  .service-ribbon { min-height: 66px; padding-inline: 18px; flex-wrap: wrap; gap: 5px 11px; font-size: 9px; }

  .story-section { padding: 84px 20px; }
  .section-heading h2, .story-section h2 { font-size: clamp(29px, 8.2vw, 39px); line-height: 1.55; }
  .reason-grid, .shift-grid, .choice-grid, .xop-grid, .record-grid, .contact-grid { grid-template-columns: 1fr; gap: 46px; }
  .surface-diagram { min-height: 390px; }
  .wall-section { grid-template-columns: 26% 12% 62%; }
  .wall-section__outside p { max-width: 70px; line-height: 1.7; text-align: center; }
  .wall-section__inside { padding: 18px 12px; }
  .inside-label { right: 12px; bottom: 18px; padding: 13px; }
  .inside-label b { font-size: 13px; }.inside-label small { font-size: 9px; }
  .shift-answer { padding: 32px 0 0; border-left: 0; border-top: 1px solid #ffffff2b; }
  .prevention-metaphor { grid-template-columns: 1fr; }
  .prevention-metaphor img { min-height: 0; aspect-ratio: 16 / 10; }
  .purpose-pair { grid-template-columns: 1fr; gap: 0; }
  .purpose-photo__labels { grid-template-columns: 1fr; }
  .purpose-photo__labels > span + span { border-left: 0; border-top: 1px solid var(--border); }
  .detail-link-panel { align-items: stretch; flex-direction: column; }
  .detail-link-panel__action { justify-content: space-between; }
  .purpose { min-height: 0; }
  .purpose-connector { width: 1px; height: 58px; margin-inline: auto; }
  .purpose-connector span { transform: translate(-50%, -50%) rotate(-90deg); }
  .choice-list > div { grid-template-columns: 1fr; gap: 8px; }
  .method-photo-labels { grid-template-columns: 1fr; }
  .method-photo-labels > span + span { border-left: 0; border-top: 1px solid #ffffff28; }
  .xop-grid { display: flex; flex-direction: column-reverse; align-items: stretch; }
  .xop-mechanism { width: min(100%, 520px); align-self: center; }
  .xop-mechanism img { min-height: 0; }
  .record-process ol { grid-template-columns: 1fr; }
  .record-process li { padding: 18px 0; border-right: 0; border-bottom: 1px solid #c9c7bf; }
  .evidence-heading, .evidence-pair { grid-template-columns: 1fr; }
  .evidence-heading { gap: 25px; }
  .audience-links { grid-template-columns: 1fr; }
  .audience-links a { min-height: 190px; border-left: 1px solid var(--border); }
  .record-detail-hero__grid, .record-detail-heading, .record-sheet-grid { grid-template-columns: 1fr; }
  .record-detail-heading { gap: 26px; }
  .record-detail-steps { grid-template-columns: 1fr; }
  .record-detail-steps li { min-height: 190px; }
  .record-sheet header { align-items: flex-start; flex-direction: column; }
  .record-sheet dl > div { grid-template-columns: 1fr; gap: 7px; }
  .building-hero__grid { grid-template-columns: 1fr; }
  .building-area-grid, .building-path ol { grid-template-columns: 1fr; }
  .relation-map, .relation-map__support { grid-template-columns: 1fr; }
  .relation-map__primary, .relation-map__support article { min-height: 230px; }
  .service-proof { grid-template-columns: 1fr; }
  .service-proof > div { min-height: 150px; border-right: 0; border-bottom: 1px solid #ffffff2b; }
  .service-proof > div:last-child { border-bottom: 0; }
  .published-works { grid-template-columns: 1fr; }
  .published-works ul { grid-template-columns: 1fr; }
  .published-works > p { grid-column: 1; }
  .building-area-grid article { min-height: 200px; }
  .house-timing-grid, .house-place-list, .house-flow ol { grid-template-columns: 1fr; }
  .house-timing-grid article { min-height: 300px; }
  .house-place-list article { min-height: 180px; }
  .partner-work-grid, .partner-fit ul, .partner-start ol { grid-template-columns: 1fr; }
  .partner-work-grid article { min-height: 190px; }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-layout > nav { position: static; }
  .works-standard > .section-shell > div { grid-template-columns: 1fr; }
  .why-cycle ol,.why-places>.section-shell>div{grid-template-columns:1fr}.why-cycle li,.why-places article{min-height:190px}

  .hero-c::before { background: linear-gradient(180deg, #0b161350 0%, #0b1613e6 38%, #0b1613 70%), url("./assets/fv/o-streaks.webp") center top/100% 52% no-repeat; }
  .hero-c__content { width: auto; padding: clamp(100px, 18vh, 154px) 22px 50px; }
  .hero-c h1 { font-size: clamp(29px, 8.7vw, 39px); line-height: 1.6; }
  .surface-study { display: none; }
  .observation-tags { gap: 6px; }
  .observation-tags span { font-size: 9px; }
}

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