@font-face {
  font-family: Comfortaa;
  src: url('./assets/fonts/comfortaa-variable.ttf') format('truetype');
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
}
@font-face {
  font-family: Manrope;
  src: url('./assets/fonts/manrope-variable.ttf') format('truetype');
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
}
:root {
  font-family: Manrope, Arial, sans-serif;
  color: #191919;
  color-scheme: light;
  font-synthesis: none;
  background: #fff;
  --ink: #191919;
  --muted: #595959;
  --quiet: #626262;
  --red: #e8142a;
  --accent: var(--red);
  --accent-strong: #c90d20;
  --paper: #fff;
  --paper-light: #fff;
  --main-surface: #fff;
  --line: #dedede;
  --page-pad: clamp(24px, 5vw, 92px);
  --content-width: 1680px;
  --curve-height: clamp(84px, 11vw, 176px);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 105px; }
body { margin: 0; min-width: 320px; }
button, input, select { font: inherit; }
a { color: inherit; text-decoration: none; }
button, a, summary, input { -webkit-tap-highlight-color: transparent; }
button, summary { cursor: pointer; }
button { color: inherit; }
h1, h2, h3, p, figure, dl, dd { margin: 0; }
img { display: block; max-width: 100%; }
svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linejoin: round; stroke-linecap: round; }
h1, h2 { font-family: Comfortaa, sans-serif; font-weight: 400; letter-spacing: -.065em; }
[hidden] { display: none !important; }
::selection { color: #fff; background: #a20d20; }
:focus-visible { outline: 3px solid #8b1524; outline-offset: 5px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip-link { position: fixed; z-index: 100; top: 12px; left: 20px; padding: 14px 24px; border-radius: 999px; background: #fff; box-shadow: 0 3px 20px #0002; transform: translateY(-160%); }
.skip-link:focus { transform: none; }

/* A quiet fixed header keeps the continuous product views navigable. */
.site-header { position: fixed; z-index: 60; inset: 0 0 auto; min-height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 17px var(--page-pad); background: rgb(255 255 255 / 94%); backdrop-filter: blur(16px); }
.brand { flex: 0 0 auto; display: flex; align-items: center; min-height: 44px; }
.brand img { width: 150px; height: auto; }
.site-nav { display: flex; align-items: center; gap: clamp(20px, 2.2vw, 36px); }
.site-nav a { min-height: 44px; display: inline-flex; align-items: center; font-size: 14px; font-weight: 500; white-space: nowrap; transition: color .2s; }
.site-nav a:hover, .site-nav a[aria-current="location"] { color: var(--red); }
.header-actions { display: flex; align-items: center; gap: 18px; }
.header-phone { min-height: 44px; display: flex; align-items: center; gap: 9px; font-size: 14px; font-weight: 550; white-space: nowrap; }
.header-price, .mobile-menu { display: none; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 24px; min-height: 58px; padding: 17px 29px; border: 1px solid transparent; border-radius: 999px; font-size: 15px; font-weight: 600; line-height: 1.5; transition: background .2s, color .2s, transform .2s; }
.button > span { font-size: 23px; font-weight: 400; line-height: 1; }
.button:hover { transform: translateY(-2px); }
.button--solid { background: var(--red); color: #fff; }
.button--solid:hover { background: var(--accent-strong); }
.button--light { background: #fff; color: var(--red); }
.button--light:hover { background: #fff; color: #a20d20; }
.button--small { min-height: 48px; padding: 12px 23px; font-size: 14px; gap: 16px; }
.text-link { display: inline-flex; align-items: center; gap: 14px; min-height: 44px; font-size: 15px; font-weight: 600; }
.text-link > span { font-size: 23px; font-weight: 400; transition: transform .2s; }
.text-link:hover > span { transform: translate(2px, -2px); }

/* Retain the fixed canvas and camera-story coordinate system. */
.scene { position: fixed; z-index: 0; inset: 0; height: 100svh; width: 100%; background: var(--main-surface); overflow: hidden; transition: opacity .2s; }
.scene-poster { position: absolute; inset: 0 0 0 auto; width: 66%; height: 100%; object-fit: contain; }
#viewer { position: absolute; inset: 0; display: block; width: 100%; height: 100%; opacity: 0; touch-action: pan-y; }
.scene-ready #viewer { opacity: 1; }
.scene-ready .scene-poster { visibility: hidden; }
.is-after-story .scene { opacity: 0; visibility: hidden; }
.status { position: absolute; z-index: 2; right: var(--page-pad); bottom: 28px; font-size: 14px; color: var(--muted); display: flex; align-items: center; gap: 9px; }
.status > span { width: 6px; height: 6px; border-radius: 50%; background: var(--red); }
.status.is-ready, .scene-deferred .status { display: none; }
.status.is-error { max-width: 280px; line-height: 1.5; padding: 14px 18px; border-radius: 20px; background: #fff; }
#main-content { position: relative; }
.story { position: relative; z-index: 1; }
.chapter { --presence: 1; position: relative; display: grid; align-items: center; min-height: 100svh; padding: 140px var(--page-pad) 90px; pointer-events: none; }
.chapter-copy { position: relative; width: min(460px, 36vw); }
.scene-ready .chapter-copy { opacity: var(--presence); }
.chapter-copy a { pointer-events: auto; }
.chapter--right .chapter-copy { justify-self: end; margin-right: 1.5vw; }
.chapter--hero { padding-top: 140px; padding-bottom: 90px; }
.chapter--hero .chapter-copy { width: min(650px, 48vw); }
h1, .hero-title { font-size: clamp(58px, 6.7vw, 100px); line-height: 1.13; }
.lede { max-width: 36ch; margin-top: 26px; font-size: clamp(17px, 1.3vw, 20px); line-height: 1.65; color: var(--muted); }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 24px; margin-top: 30px; }
.hero-commercial { display: flex; flex-direction: column; gap: 5px; margin-top: 24px; font-size: 15px; color: var(--muted); line-height: 1.6; }
.hero-commercial strong { font-weight: 650; color: var(--ink); font-size: 21px; letter-spacing: -.025em; }
.hero-commercial > span { font-size: 14px; }
.scroll-cue { position: absolute; bottom: 22px; left: var(--page-pad); pointer-events: auto; display: inline-flex; align-items: center; gap: 27px; min-height: 44px; font-size: 14px; font-weight: 550; }
.scroll-cue span { font-size: 24px; }
.chapter h2 { font-size: clamp(43px, 4.2vw, 66px); line-height: 1.2; max-width: 13ch; text-wrap: balance; }
.chapter-copy > p:not(.lede) { margin-top: 25px; font-size: 17px; color: var(--muted); line-height: 1.65; max-width: 39ch; }
.chapter-facts { display: flex; flex-wrap: wrap; gap: 10px 22px; list-style: none; margin: 25px 0 0; padding: 0; font-size: 15px; font-weight: 550; line-height: 1.6; }
.chapter--final { align-items: end; }
.final-note { justify-self: center; margin: 0 auto; padding: 12px 20px; font-size: 15px; color: var(--muted); line-height: 1.6; text-align: center; }
.live-dot { display: inline-block; width: 6px; height: 6px; flex: 0 0 6px; background: currentColor; border-radius: 50%; }

/* Each broad curve leads into a full-width color field. */
.site-content { position: relative; z-index: 3; background: #fff; }
.color-section { --muted: #fff; --quiet: #fff; --line: rgb(255 255 255 / 30%); position: relative; background: linear-gradient(var(--red) calc(100% - 3px), #fff calc(100% - 3px)); color: #fff; }
.living-edge { position: relative; height: var(--curve-height); margin-bottom: -1px; overflow: hidden; pointer-events: none; }
.living-edge svg { width: 100%; height: 100%; display: block; stroke: none; }
.living-edge[data-edge="enter"], .living-edge--enter { background: #fff; }
.living-edge[data-edge="enter"] path, .living-edge--enter path { fill: var(--red); }
.living-edge[data-edge="exit"], .living-edge--exit { margin-top: -1px; margin-bottom: 0; background: linear-gradient(var(--red) calc(100% - 3px), #fff calc(100% - 3px)); }
.living-edge[data-edge="exit"] path, .living-edge--exit path { fill: #fff; }
.color-section .button--solid { background: #fff; color: var(--red); }
.color-section .button--solid:hover { color: #a20d20; }
.color-section :focus-visible { outline-color: #fff; }
.content-section { max-width: var(--content-width); margin: 0 auto; padding: 85px var(--page-pad); }
.section-heading { min-width: 0; }
.section-heading h2 { font-size: clamp(42px, 4.5vw, 72px); line-height: 1.2; max-width: 15ch; text-wrap: balance; }
.muted-heading { color: inherit; }
.section-heading > p { margin-top: 26px; max-width: 41ch; color: var(--muted); font-size: 17px; line-height: 1.65; }
.detail-section { display: grid; grid-template-columns: .85fr 1.2fr; column-gap: 5vw; row-gap: 52px; padding-top: 35px; padding-bottom: 42px; }
.detail-section .section-heading { grid-column: 1; align-self: center; }
.detail-visual { grid-column: 2; grid-row: 1; align-self: center; min-width: 0; position: relative; overflow: clip; }
.detail-visual img { width: 100%; height: auto; display: block; transform: scale(1.04); }
.improvement-list { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 34px; padding-top: 30px; border-top: 1px solid var(--line); }
.improvement-list article { min-width: 0; }
.improvement-list h3 { font-size: 21px; font-weight: 650; letter-spacing: -.025em; line-height: 1.4; }
.improvement-list p { margin-top: 14px; font-size: 16px; color: var(--muted); line-height: 1.7; }
.proof-strip { grid-column: 1 / -1; display: grid; grid-template-columns: 1.2fr 1fr auto; align-items: center; gap: 35px; padding: 32px 0 0; border-top: 1px solid var(--line); }
.proof-strip > p { display: flex; align-items: center; gap: 23px; }
.proof-strip strong { font-family: Comfortaa, sans-serif; font-size: 55px; font-weight: 450; letter-spacing: -.065em; line-height: 1.2; }
.proof-strip > p > span { font-size: 16px; line-height: 1.5; }
.proof-strip small { display: block; max-width: 215px; margin-top: 5px; font-size: 13px; color: var(--muted); line-height: 1.5; }
.proof-strip > div { display: grid; gap: 9px; font-size: 15px; color: var(--muted); line-height: 1.5; }
.fitting-section { display: grid; grid-template-columns: .85fr 1.2fr; gap: 6vw; padding-top: 50px; padding-bottom: 65px; }
.section-lede { font-size: 19px; line-height: 1.65; max-width: 43ch; }
.process-list { padding: 0; margin: 30px 0 20px; list-style: none; }
.process-list li { padding: 17px 0; border-bottom: 1px solid var(--line); }
.process-list p { font-size: 16px; color: var(--muted); line-height: 1.6; }

/* Preserve the approved package sequence's sticky height and frame sizing. */
.content-section.packaging-section { --packaging-header-height: 88px; padding-top: 0; padding-bottom: 0; background: #fff; }
.packaging-copy h2 { font-size: clamp(42px, 4.5vw, 72px); line-height: 1.2; max-width: 12ch; }
.packaging-copy.section-heading > p { font-size: 17px; line-height: 1.65; max-width: 29ch; margin-top: 26px; }
.packaging-copy .text-link { margin-top: 22px; }
.packaging-scene-inner { gap: 28px; }
.packaging-scene-inner .packaging-visual { margin: 0; }
.kit-section { display: grid; grid-template-columns: .85fr 1.2fr; gap: 6vw; padding-top: 45px; padding-bottom: 55px; }
.kit-heading h2 { font-size: clamp(34px, 3vw, 48px); line-height: 1.25; max-width: 14ch; }
.kit-heading > p { max-width: 30ch; font-size: 17px; color: var(--muted); line-height: 1.65; margin-top: 20px; }
.kit-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 36px; align-content: start; }
.kit-list > div { display: flex; justify-content: space-between; align-items: baseline; gap: 14px; padding: 17px 0; border-bottom: 1px solid var(--line); font-size: 16px; line-height: 1.5; }
.kit-list dd { color: var(--muted); white-space: nowrap; }
.pricing-section { display: grid; grid-template-columns: .85fr 1.2fr; gap: 6vw; padding-top: 35px; padding-bottom: 48px; }
.price-panel { min-width: 0; }
.price-table { width: 100%; border-collapse: collapse; text-align: left; }
.price-table thead th { padding: 0 0 18px; border-bottom: 1px solid var(--line); font-size: 15px; font-weight: 500; }
.price-table thead th:last-child { text-align: right; }
.price-table tbody tr { border-bottom: 1px solid var(--line); }
.price-table tbody th { padding: 24px 8px 24px 0; font-size: 25px; font-weight: 500; white-space: nowrap; }
.price-table tbody th span { font-size: 15px; font-weight: 400; }
.price-table td { font-family: Comfortaa, sans-serif; font-variant-numeric: tabular-nums; text-align: right; font-size: clamp(34px, 3vw, 47px); letter-spacing: -.05em; font-weight: 400; white-space: nowrap; }
.price-table td span { font-family: Manrope, sans-serif; font-size: 23px; }
.price-benefits { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 20px; margin: 26px 0; font-size: 15px; line-height: 1.6; }
.price-benefits p:first-child { display: flex; align-items: center; gap: 10px; }
.price-panel > .button { display: flex; width: 100%; justify-content: space-between; text-align: left; }
.specifications-section { padding-top: 35px; padding-bottom: 50px; }
.specification-details { border-bottom: 1px solid var(--line); }
.specification-details summary { display: flex; justify-content: space-between; align-items: center; gap: 30px; padding: 32px 0; list-style: none; }
.specification-details summary::-webkit-details-marker { display: none; }
.specification-details summary > span:first-child { display: block; }
.details-title { font-family: Comfortaa, sans-serif; font-size: clamp(27px, 2.5vw, 40px); font-weight: 450; letter-spacing: -.055em; line-height: 1.3; }
.details-sign { width: 46px; height: 46px; flex: 0 0 46px; display: grid; place-items: center; border: 1px solid #bebebe; border-radius: 50%; font-size: 27px; font-weight: 400; transition: transform .2s; }
.specification-details[open] .details-sign { transform: rotate(45deg); }
.specification-body { padding-bottom: 30px; }
.specs-list > div { display: grid; grid-template-columns: 1fr 2fr; gap: 32px; padding: 20px 0; border-top: 1px solid var(--line); font-size: 16px; line-height: 1.65; }
.specs-list dt { font-weight: 650; }
.specs-list dd { color: var(--muted); }
.specification-note { font-size: 15px; color: var(--muted); padding-top: 18px; line-height: 1.65; }
.contact-section { max-width: var(--content-width); margin: 0 auto; padding: 26px var(--page-pad) 34px; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: clamp(48px, 8vw, 130px); }
.contact-section .section-heading > p { max-width: 38ch; }
.inquiry-section { display: grid; grid-template-columns: .88fr 1.12fr; align-items: start; gap: clamp(48px, 7vw, 116px); padding-top: 54px; padding-bottom: 94px; }
.inquiry-section .section-heading > p { max-width: 32ch; }
.inquiry-composer { min-width: 0; }
.inquiry-composer fieldset { display: none; border: 0; padding: 0; margin: 0; min-width: 0; }
.inquiry-ready .inquiry-composer fieldset { display: block; }
.inquiry-composer legend { font-size: 17px; font-weight: 600; margin-bottom: 18px; }
.inquiry-options { display: flex; flex-wrap: wrap; gap: 10px; }
.inquiry-options label { position: relative; display: flex; max-width: 100%; }
.inquiry-options input { position: absolute; inset: 0; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.inquiry-options span { border: 1px solid #a1a1a1; padding: 12px 18px; min-height: 48px; border-radius: 999px; font-size: 15px; line-height: 1.5; transition: background .2s, color .2s; }
.inquiry-options input:checked + span { background: var(--ink); color: #fff; border-color: var(--ink); }
.inquiry-options input:focus-visible + span { outline: 3px solid var(--red); outline-offset: 4px; }
.inquiry-options input:hover + span { border-color: var(--ink); }
.inquiry-description { color: var(--muted); min-height: 58px; max-width: 48ch; margin-top: 24px; font-size: 16px; line-height: 1.65; }
.inquiry-composer .button { margin-top: 24px; min-width: 250px; background: var(--red); color: #fff; }
.inquiry-composer .button:hover { background: var(--accent-strong); color: #fff; }
.email-hint { font-size: 14px; margin-top: 16px; line-height: 1.6; }
.order-contacts { font-style: normal; min-width: 0; }
.order-contacts a { position: relative; display: flex; flex-direction: column; gap: 12px; padding: 0 35px 25px 0; border-bottom: 1px solid var(--line); min-height: 102px; }
.order-contacts a + a { padding-top: 25px; }
.order-contacts a > span:first-child { font-size: 15px; }
.order-contacts strong { font-size: clamp(24px, 2.5vw, 38px); font-weight: 450; line-height: 1.3; letter-spacing: -.03em; }
.order-contacts .contact-arrow { position: absolute; right: 0; bottom: 25px; font-size: 27px; }
.order-contacts > p { font-size: 15px; line-height: 1.65; margin-top: 25px; }
.site-footer { max-width: var(--content-width); margin: 0 auto; padding: 28px var(--page-pad) 40px; display: grid; grid-template-columns: 1fr 1fr auto; align-items: center; gap: 28px; }
.site-footer img { width: 150px; height: auto; }
.site-footer p { font-size: 15px; font-weight: 650; line-height: 1.65; }
.site-footer p span { font-weight: 400; color: var(--muted); }
.footer-business { grid-column: 1 / -1; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 28px; padding-top: 30px; border-top: 1px solid var(--line); }
.site-footer .footer-business p { margin: 0; font-size: 14px; font-weight: 400; color: var(--muted); }
.footer-business p:last-child { display: flex; flex-wrap: wrap; gap: 6px 24px; }
.site-footer small { grid-column: 1 / -1; font-size: 13px; color: var(--muted); }
.back-to-top { position: fixed; z-index: 65; right: max(20px, env(safe-area-inset-right)); bottom: max(18px, env(safe-area-inset-bottom)); min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 0 17px 0 20px; border: 1px solid var(--line); border-radius: 999px; background: rgb(255 255 255 / 96%); color: var(--ink); font-size: 14px; font-weight: 600; box-shadow: 0 3px 18px #260c1714; backdrop-filter: blur(12px); transition: transform .2s, color .2s, border-color .2s; }
.back-to-top:hover { transform: translateY(-2px); color: var(--red); border-color: var(--red); }
.back-to-top svg { width: 20px; height: 20px; }

@media (max-width: 1320px) {
  .header-phone span { display: none; }
  .header-phone { justify-content: center; min-width: 44px; }
  .header-actions { gap: 10px; }
  .site-nav { gap: 22px; }
  .site-header { gap: 22px; }
  .proof-strip { grid-template-columns: 1.25fr 1fr; }
  .proof-strip > .text-link { display: none; }
}
@media (max-width: 1050px) {
  .site-nav { display: none; }
  .header-price { display: inline-flex; min-height: 44px; align-items: center; font-size: 15px; font-weight: 550; padding: 0 12px; }
  .mobile-menu { display: block; }
  .mobile-menu > summary { list-style: none; width: 44px; height: 44px; display: flex; flex-direction: column; justify-content: center; gap: 7px; padding: 10px; }
  .mobile-menu > summary::-webkit-details-marker { display: none; }
  .mobile-menu > summary > span { height: 1.5px; width: 23px; background: var(--ink); transition: transform .2s; }
  .mobile-menu[open] > summary > span:first-child { transform: translateY(4.25px) rotate(45deg); }
  .mobile-menu[open] > summary > span:last-child { transform: translateY(-4.25px) rotate(-45deg); }
  .mobile-menu nav { position: absolute; top: 100%; left: 0; right: 0; padding: 18px var(--page-pad) 26px; background: #fff; display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; border-radius: 0 0 28px 28px; box-shadow: 0 18px 30px #0000000a; }
  .mobile-menu nav a { display: flex; align-items: center; min-height: 52px; border-bottom: 1px solid var(--line); font-size: 16px; }
  .chapter--right .chapter-copy { margin-right: 0; }
  .chapter h2 { font-size: clamp(39px, 4.3vw, 48px); }
  .improvement-list { grid-template-columns: 1fr 1fr; gap: 32px 36px; }
  .packaging-copy h2 { font-size: clamp(39px, 4.4vw, 50px); }
  .kit-list { grid-template-columns: 1fr; }
  .contact-section { gap: 5vw; }
  .inquiry-section { grid-template-columns: .85fr 1.15fr; gap: 5vw; }
  .order-contacts strong { overflow-wrap: anywhere; }
}
@media (max-width: 820px) {
  :root { --page-pad: 24px; --curve-height: 104px; --mobile-copy-height: max(52svh, 385px); }
  html { scroll-padding-top: 88px; }
  .site-header { min-height: 72px; padding-block: 10px; }
  .brand img { width: 128px; }
  .header-cta { min-height: 44px; }
  .scene { top: var(--mobile-copy-height); bottom: 0; height: calc(100svh - var(--mobile-copy-height)); background: #fff; }
  .scene-poster { width: 100%; }
  .status { bottom: 18px; font-size: 13px; }
  .story { background: linear-gradient(#fff, #fff) top left / 100% var(--mobile-copy-height) no-repeat; }
  .chapter { min-height: 100svh; align-items: start; padding: 115px var(--page-pad) calc(100svh - var(--mobile-copy-height)); }
  .chapter-copy, .chapter--hero .chapter-copy { width: 100%; max-width: 610px; }
  .scene-ready .chapter-copy, .scene-ready .chapter--hero .chapter-copy { position: fixed; top: 115px; left: var(--page-pad); width: calc(100% - 2 * var(--page-pad)); max-width: 610px; opacity: 0; visibility: hidden; transition: opacity .2s; }
  .scene-ready .chapter[data-active="true"] .chapter-copy { opacity: 1; visibility: visible; }
  .scene-ready.is-after-story .chapter[data-active] .chapter-copy { opacity: 0; visibility: hidden; }
  .chapter--right .chapter-copy { justify-self: start; margin-right: 0; }
  .chapter-copy::before { content: ''; position: absolute; z-index: -1; inset: -43px calc(-1 * var(--page-pad)) -22px; background: #fff; }
  h1, .hero-title { font-size: clamp(42px, 8.2vw, 62px); line-height: 1.14; }
  .hero-title br:nth-of-type(2) { display: none; }
  .lede { font-size: 17px; line-height: 1.55; margin-top: 18px; max-width: 45ch; }
  .hero-actions { margin-top: 22px; gap: 16px 22px; }
  .hero-actions .button { min-height: 52px; padding-block: 14px; }
  .hero-commercial { margin-top: 16px; gap: 2px; font-size: 14px; }
  .hero-commercial strong { font-size: 18px; }
  .hero-commercial > span { display: none; }
  .scroll-cue { display: none; }
  .chapter h2 { font-size: clamp(37px, 6vw, 49px); max-width: 18ch; }
  .chapter-copy > p:not(.lede) { margin-top: 18px; font-size: 16px; line-height: 1.6; max-width: 49ch; }
  .chapter-facts { margin-top: 18px; gap: 8px 22px; font-size: 14px; }
  .chapter--final { padding-bottom: 16px; align-items: end; }
  .final-note { max-width: 80%; padding-inline: 0; font-size: 14px; }
  .proof-strip { gap: 28px; }
  .proof-strip strong { font-size: 46px; }
  .proof-strip > p { gap: 18px; }
  .content-section { padding-block: 60px; }
  .section-heading h2 { font-size: clamp(38px, 6vw, 52px); }
  .detail-section { gap: 34px; padding-top: 26px; padding-bottom: 35px; }
  .detail-section .section-heading { grid-column: 1; }
  .detail-visual { margin-inline: -12px; }
  .improvement-list { gap: 30px; }
  .improvement-list h3 { font-size: 20px; }
  .fitting-section { grid-template-columns: 1fr; gap: 30px; padding-top: 35px; }
  .section-lede { max-width: 52ch; font-size: 18px; }
  .content-section.packaging-section { --packaging-header-height: 72px; }
  .packaging-copy h2 { font-size: clamp(38px, 5.5vw, 48px); }
  .packaging-copy.section-heading > p { font-size: 16px; margin-top: 20px; }
  .kit-section { gap: 35px; }
  .kit-heading h2 { font-size: 35px; }
  .pricing-section { grid-template-columns: 1fr; gap: 38px; padding-top: 30px; padding-bottom: 35px; }
  .price-table td { font-size: 42px; }
  .specifications-section { padding-block: 24px 35px; }
  .contact-section { padding-block: 30px 35px; gap: 35px; }
  .inquiry-section { grid-template-columns: 1fr; gap: 34px; padding-top: 35px; }
  .inquiry-section .section-heading > p { max-width: 45ch; }
  .inquiry-options { gap: 10px; }
  .inquiry-options span { font-size: 14px; padding-inline: 15px; }
  .order-contacts strong { font-size: 25px; }
  .inquiry-composer .button { min-width: 0; width: 100%; }
}
@media (max-width: 560px) {
  :root { --curve-height: 92px; }
  .site-header { gap: 12px; }
  .brand img { width: 112px; }
  .header-cta { display: none; }
  .header-actions { gap: 3px; }
  .header-phone { min-width: 40px; }
  .header-price { padding-inline: 10px; }
  .mobile-menu nav { grid-template-columns: 1fr; }
  .chapter { padding-top: 96px; }
  .scene-ready .chapter-copy, .scene-ready .chapter--hero .chapter-copy { top: 96px; }
  .chapter-copy::before { top: -24px; bottom: -20px; }
  h1, .hero-title { font-size: clamp(37px, 12vw, 48px); }
  .lede { font-size: 16px; margin-top: 15px; line-height: 1.55; }
  .hero-actions { gap: 12px 18px; margin-top: 20px; }
  .hero-actions .button { font-size: 15px; padding: 13px 20px; gap: 13px; min-height: 50px; }
  .hero-actions .text-link { display: none; }
  .hero-commercial { font-size: 14px; margin-top: 13px; }
  .hero-commercial strong { font-size: 18px; }
  .chapter h2 { font-size: clamp(34px, 9vw, 42px); max-width: 16ch; }
  .chapter-copy > p:not(.lede) { font-size: 16px; margin-top: 17px; line-height: 1.55; }
  .chapter-facts { font-size: 14px; gap: 6px 16px; margin-top: 15px; }
  .proof-strip { grid-template-columns: 1fr; gap: 24px; padding-top: 27px; }
  .proof-strip > div { gap: 8px; }
  .proof-strip small { max-width: 220px; }
  .content-section { padding-block: 46px; }
  .section-heading h2 { font-size: clamp(35px, 9vw, 45px); line-height: 1.23; }
  .section-heading > p { font-size: 16px; margin-top: 22px; }
  .detail-section { grid-template-columns: 1fr; row-gap: 18px; padding-top: 25px; padding-bottom: 20px; }
  .detail-visual { grid-column: 1; grid-row: 2; margin-inline: -12px; }
  .improvement-list { grid-template-columns: 1fr; gap: 27px; padding-top: 26px; }
  .improvement-list h3 { font-size: 21px; }
  .improvement-list p { margin-top: 10px; font-size: 16px; line-height: 1.65; }
  .fitting-section { gap: 25px; padding-top: 30px; }
  .section-lede { font-size: 17px; }
  .process-list { margin-top: 20px; }
  .process-list li { padding-block: 15px; }
  .packaging-copy h2 { font-size: clamp(34px, 8.5vw, 43px); max-width: 14ch; line-height: 1.2; }
  .packaging-copy.section-heading > p { margin-top: 16px; font-size: 16px; }
  .packaging-copy .text-link { margin-top: 12px; font-size: 15px; }
  .packaging-scene-inner { gap: 12px; }
  .kit-section { grid-template-columns: 1fr; gap: 23px; padding-top: 28px; }
  .kit-heading h2 { font-size: 34px; }
  .kit-heading > p { font-size: 16px; margin-top: 17px; }
  .kit-list { grid-template-columns: 1fr; }
  .kit-list > div { padding-block: 15px; }
  .pricing-section { gap: 32px; padding-top: 26px; padding-bottom: 26px; }
  .price-table thead th { font-size: 14px; }
  .price-table tbody th { font-size: 23px; padding-block: 22px; }
  .price-table tbody th span { display: block; font-size: 14px; margin-top: 5px; }
  .price-table td { font-size: clamp(31px, 8.8vw, 39px); }
  .price-table td span { font-size: 21px; }
  .price-benefits { flex-direction: column; gap: 10px; }
  .price-panel > .button { gap: 16px; padding: 16px 22px; }
  .specifications-section { padding-block: 16px 26px; }
  .details-title { font-size: 28px; }
  .specification-details summary { gap: 15px; padding-block: 26px; }
  .details-sign { width: 44px; height: 44px; flex-basis: 44px; }
  .specs-list > div { grid-template-columns: 1fr; gap: 8px; }
  .contact-section { grid-template-columns: 1fr; gap: 38px; padding-block: 28px 24px; }
  .inquiry-section { padding-top: 28px; padding-bottom: 58px; gap: 28px; }
  .inquiry-options { gap: 10px; }
  .inquiry-options span { font-size: 15px; padding-inline: 17px; }
  .inquiry-description { min-height: 0; }
  .order-contacts strong { font-size: 29px; }
  .order-contacts a { min-height: 100px; }
  .site-footer { grid-template-columns: 1fr auto; gap: 24px; padding-top: 20px; padding-bottom: 82px; }
  .site-footer > p { grid-column: 1; grid-row: 2; }
  .site-footer > .text-link { grid-column: 2; grid-row: 1; font-size: 14px; }
  .site-footer img { width: 128px; }
  .back-to-top { right: max(14px, env(safe-area-inset-right)); bottom: max(14px, env(safe-area-inset-bottom)); }
}
@media (max-width: 370px) {
  :root { --page-pad: 20px; --curve-height: 80px; --mobile-copy-height: max(54svh, 435px); }
  .brand img { width: 102px; }
  .hero-actions { gap: 8px 14px; }
  .hero-actions .button { gap: 12px; padding-inline: 19px; }
  .hero-commercial { margin-top: 8px; }
  .chapter h2 { font-size: 32px; }
  .chapter-copy > p:not(.lede) { font-size: 15px; }
  .chapter-facts { font-size: 14px; }
  .section-heading h2 { font-size: 34px; }
  .order-contacts strong { font-size: 25px; }
  .price-table td { font-size: 30px; }
}
@media (max-height: 740px) and (min-width: 821px) {
  .chapter--hero { padding-top: 112px; padding-bottom: 66px; }
  h1, .hero-title { font-size: clamp(54px, 5.4vw, 75px); }
  .lede { margin-top: 20px; font-size: 17px; }
  .hero-actions { margin-top: 22px; }
  .hero-commercial { margin-top: 17px; }
}
@media (max-height: 680px) and (max-width: 820px) {
  :root { --mobile-copy-height: 380px; }
  .chapter { padding-top: 90px; }
  h1, .hero-title { font-size: 37px; }
  .chapter h2 { font-size: 32px; }
  .lede { margin-top: 12px; font-size: 15px; }
  .hero-actions { margin-top: 14px; }
  .hero-commercial { margin-top: 10px; }
  .chapter-copy > p:not(.lede) { margin-top: 14px; font-size: 15px; }
  .chapter-facts { margin-top: 12px; }
  .scene-ready .chapter-copy, .scene-ready .chapter--hero .chapter-copy { top: 90px; }
}
/* Short landscape keeps the model beside the copy, with room for both. */
@media (orientation: landscape) and (max-width: 1050px) and (max-height: 520px) {
  .site-header { min-height: 64px; padding-block: 7px; }
  .header-cta { display: none; }
  .scene { inset: 64px 0 0 auto; width: 51vw; height: calc(100svh - 64px); }
  .scene-poster { width: 100%; }
  .story { background: none; }
  .chapter { min-height: max(100svh, 350px); padding: 82px var(--page-pad) 20px; align-items: start; }
  .chapter-copy, .chapter--hero .chapter-copy { width: calc(49vw - var(--page-pad) - 12px); max-width: none; }
  .scene-ready .chapter-copy, .scene-ready .chapter--hero .chapter-copy { position: fixed; top: 82px; left: var(--page-pad); width: calc(49vw - var(--page-pad) - 12px); max-width: none; opacity: 0; visibility: hidden; transition: opacity .2s; }
  .scene-ready .chapter[data-active="true"] .chapter-copy { opacity: 1; visibility: visible; }
  .scene-ready.is-after-story .chapter[data-active] .chapter-copy { opacity: 0; visibility: hidden; }
  .chapter--right .chapter-copy { justify-self: start; margin-right: 0; }
  .chapter-copy::before { display: none; }
  h1, .hero-title { font-size: clamp(28px, 4.5vw, 42px); line-height: 1.13; }
  .hero-title br:nth-of-type(2) { display: none; }
  .chapter h2 { font-size: clamp(28px, 3.9vw, 36px); }
  .lede, .chapter-copy > p:not(.lede) { font-size: 15px; line-height: 1.45; margin-top: 12px; }
  .hero-actions { margin-top: 14px; }
  .hero-actions .button { min-height: 44px; padding: 10px 19px; font-size: 14px; }
  .hero-actions .text-link { display: none; }
  .hero-commercial { margin-top: 10px; font-size: 14px; }
  .hero-commercial > span { display: none; }
  .hero-commercial strong { font-size: 18px; }
  .chapter-facts { margin-top: 12px; font-size: 14px; }
  .scroll-cue { display: none; }
  .chapter--final { align-items: end; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .button:hover, .back-to-top:hover { transform: none; }
  .scene-ready .chapter-copy { opacity: 1; }
}