:root {
  color-scheme: light;
  --site-bg: #efefea;
  --site-surface: #f8f8f4;
  --site-ink: #0a0a0a;
  --site-muted: #63635e;
  --site-line: rgba(10, 10, 10, .18);
  --site-accent: #0868ff;
  --site-max: 1440px;
  --site-header-height: 72px;
  --site-pad: 28px;
  --site-ease: cubic-bezier(.16, 1, .3, 1);
  --font-display: "Helvetica Neue", Helvetica, Arial, "Hiragino Sans", "Yu Gothic", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  min-width: 320px;
  scroll-behavior: smooth;
  background: var(--site-bg);
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--site-ink);
  background: var(--site-bg);
  font-family: var(--font-body);
  line-height: 1.55;
  letter-spacing: 0;
  overflow-x: clip;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open { overflow: hidden; }

.site-transition {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  align-content: end;
  justify-items: start;
  gap: 6px;
  padding: 30px var(--site-pad);
  color: #f4f4ef;
  background: #0a0a0a;
  transform: translateY(0);
  transition: transform .72s var(--site-ease);
  pointer-events: none;
}
.site-transition span { font-family: var(--font-display); font-size: 74px; font-weight: 760; line-height: .86; }
.site-transition small { color: rgba(244,244,239,.62); font-size: 10px; font-weight: 760; letter-spacing: .1em; text-transform: uppercase; }
body.is-cinematic-ready .site-transition { transform: translateY(-101%); }
body.is-cinematic-leaving .site-transition { transform: translateY(0); }
body.is-cinematic-leaving { overflow: hidden; }

img, picture, video { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--site-accent);
  outline-offset: 4px;
}

::selection { color: #fff; background: var(--site-ink); }

.visually-hidden,
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 500;
  padding: 10px 14px;
  color: #fff;
  background: #0a0a0a;
  transform: translateY(-180%);
  transition: transform .2s ease;
}
.skip-link:focus { transform: translateY(0); }

.site-container {
  width: min(var(--site-max), calc(100% - (var(--site-pad) * 2)));
  margin-inline: auto;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 120;
  min-height: var(--site-header-height);
  color: var(--site-ink);
  background: color-mix(in srgb, var(--site-bg) 76%, transparent);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
  transition: background .25s ease, border-color .25s ease;
}

.site-header.is-scrolled { border-bottom-color: var(--site-line); }

.site-header-inner {
  width: 100%;
  min-height: var(--site-header-height);
  padding: 0 var(--site-pad);
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-brand {
  position: relative;
  z-index: 3;
  min-width: max-content;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  line-height: 1;
}
.site-brand img {
  width: 34px;
  height: 34px;
  border-radius: 7px;
  object-fit: cover;
}

.site-brand-mark {
  display: inline-block;
  font-size: 22px;
  line-height: 1;
  transition: transform .45s var(--site-ease);
}
.site-brand:hover .site-brand-mark { transform: rotate(90deg); }

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 23px;
  color: inherit;
  font-size: 14px;
  font-weight: 650;
  white-space: nowrap;
}

.site-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  transition: opacity .2s ease;
}
.site-nav a:hover { opacity: .48; }
.site-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 4px;
  left: 0;
  height: 1px;
  background: currentColor;
}
.site-nav-divider {
  width: 1px;
  height: 20px;
  background: currentColor;
  opacity: .25;
}

.site-menu-toggle {
  position: relative;
  z-index: 3;
  display: none;
  width: 42px;
  height: 42px;
  margin-left: auto;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}
.site-menu-toggle span,
.site-menu-toggle span::before,
.site-menu-toggle span::after {
  position: absolute;
  left: 9px;
  width: 24px;
  height: 2px;
  background: currentColor;
  content: "";
  transition: transform .3s var(--site-ease), opacity .2s ease;
}
.site-menu-toggle span { top: 20px; }
.site-menu-toggle span::before { top: -7px; left: 0; }
.site-menu-toggle span::after { top: 7px; left: 0; }
.site-menu-toggle[aria-expanded="true"] span { background: transparent; }
.site-menu-toggle[aria-expanded="true"] span::before { transform: translateY(7px) rotate(45deg); }
.site-menu-toggle[aria-expanded="true"] span::after { transform: translateY(-7px) rotate(-45deg); }

.button,
.text-link {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 18px;
  border: 1px solid currentColor;
  border-radius: 0;
  color: var(--site-ink);
  background: transparent;
  font-size: 14px;
  font-weight: 720;
  cursor: pointer;
  transition: color .22s ease, background .22s ease, transform .22s var(--site-ease);
}
.button::after,
.text-link::after { content: "↗"; font-size: 15px; line-height: 1; }
.button:hover,
.text-link:hover { color: var(--site-bg); background: var(--site-ink); transform: translateY(-2px); }
.button-primary { color: var(--site-bg); background: var(--site-ink); }
.button-primary:hover { color: var(--site-ink); background: transparent; }
.button-dark { color: #0a0a0a; background: #f4f4ef; }
.button-dark:hover { color: #f4f4ef; background: transparent; }
.button-arrow::after { content: "→"; }

.eyebrow {
  margin: 0;
  color: currentColor;
  font-size: 11px;
  font-weight: 760;
  line-height: 1.2;
  letter-spacing: .12em;
  text-transform: uppercase;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .85s var(--site-ease), transform .85s var(--site-ease);
}
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

[data-scrub-stage] {
  --pointer-x: 0;
  --pointer-y: 0;
  --scroll-shift: 0;
}

[data-scene-stage][data-active-scene="eco"] .hero-screen:not(.hero-screen-eco),
[data-scene-stage][data-active-scene="fuel"] .hero-screen:not(.hero-screen-fuel),
[data-scene-stage][data-active-scene="note"] .hero-screen:not(.hero-screen-note) { opacity: .26; filter: grayscale(1) blur(1px); }
[data-scene-stage][data-active-scene="eco"] .hero-screen-eco,
[data-scene-stage][data-active-scene="fuel"] .hero-screen-fuel,
[data-scene-stage][data-active-scene="note"] .hero-screen-note { z-index: 8; filter: drop-shadow(0 35px 44px rgba(0,0,0,.33)); }

.site-footer {
  color: #f4f4ef;
  background: #0a0a0a;
  border-top: 1px solid rgba(255,255,255,.24);
}
.site-footer-inner {
  width: 100%;
  min-height: 210px;
  padding: 42px var(--site-pad);
  display: grid;
  grid-template-columns: 1fr 2fr auto;
  align-items: end;
  gap: 32px;
}
.site-footer-brand {
  font-family: var(--font-display);
  font-size: 58px;
  font-weight: 760;
  line-height: .9;
}
.site-footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 24px;
  font-size: 13px;
}
.site-footer-links a { text-decoration: underline; text-underline-offset: 4px; }
.site-footer-links a:hover { opacity: .5; }
.site-footer-inner > span { color: rgba(255,255,255,.6); font-size: 12px; }

/* Editorial document pages */
.legal-page { background: var(--site-bg); }
.legal-main {
  width: min(var(--site-max), calc(100% - (var(--site-pad) * 2)));
  min-height: 100svh;
  margin-inline: auto;
  padding: 150px 0 120px;
  display: grid;
  grid-template-columns: minmax(300px, .8fr) minmax(0, 1.2fr);
  gap: 8%;
  align-items: start;
}
.legal-hero {
  position: sticky;
  top: 120px;
  padding: 0;
}
.legal-hero h1 {
  max-width: 660px;
  margin: 20px 0 0;
  font-family: var(--font-display);
  font-size: 82px;
  line-height: .92;
  font-weight: 760;
}
.legal-lead {
  max-width: 590px;
  margin: 28px 0 0;
  color: var(--site-muted);
  font-size: 16px;
  line-height: 1.85;
}
.legal-date { margin: 22px 0 0; color: var(--site-muted); font-size: 12px; }
.legal-content { border-top: 1px solid var(--site-ink); }
.legal-section {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 26px;
  padding: 30px 0 34px;
  border-bottom: 1px solid var(--site-line);
  background: transparent;
}
.legal-section h2 { margin: 0; font-size: 15px; line-height: 1.45; }
.legal-section h3 { margin: 24px 0 8px; font-size: 15px; }
.legal-section p,
.legal-section li { color: #41413d; font-size: 14px; line-height: 1.9; }
.legal-section p { margin: 0; }
.legal-section p + p { margin-top: 14px; }
.legal-section ul,
.legal-section ol { margin: 0; padding-left: 1.25em; }
.legal-section a { text-decoration: underline; text-underline-offset: 4px; }
.legal-section > :not(h2) { min-width: 0; }
.legal-table { margin: 0; border-top: 1px solid var(--site-line); }
.legal-row {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 22px;
  padding: 17px 0;
  border-bottom: 1px solid var(--site-line);
}
.legal-row dt { color: var(--site-muted); font-weight: 650; }
.legal-row dd { margin: 0; overflow-wrap: anywhere; }
.legal-notice { padding: 20px 0; border-block: 1px solid var(--site-line); }

/* Shared product directory: the applications keep distinct voices, while the
   route between them stays legible and consistent. */
.esc-product-directory {
  --directory-ink: #f4f4ef;
  --directory-muted: rgba(244, 244, 239, .62);
  --directory-line: rgba(244, 244, 239, .22);
  color: var(--directory-ink);
  background: #0a0a0a;
  border-top: 1px solid var(--directory-line);
}
.esc-product-directory-heading,
.esc-product-directory-list,
.esc-product-directory-current {
  width: min(var(--site-max), calc(100% - (var(--site-pad) * 2)));
  margin-inline: auto;
}
.esc-product-directory-heading {
  min-height: 430px;
  padding: 78px 0 60px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: flex-start;
}
.esc-product-directory-heading > p,
.esc-product-directory-current,
.esc-product-directory-list small,
.esc-product-directory-number,
.esc-product-directory-state {
  margin: 0;
  color: var(--directory-muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .08em;
}
.esc-product-directory-heading h2 {
  max-width: 930px;
  margin: 22px 0 34px;
  font-family: var(--font-display);
  font-size: clamp(42px, 6vw, 82px);
  font-weight: 760;
  line-height: .9;
}
.esc-product-directory-heading a {
  display: inline-flex;
  gap: 14px;
  padding-bottom: 6px;
  border-bottom: 1px solid currentColor;
  font-size: 14px;
  font-weight: 720;
}
.esc-product-directory-heading a:hover,
.esc-product-directory-list a:hover { opacity: .55; }
.esc-product-directory-list {
  margin-block: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--directory-line);
}
.esc-product-directory-list li {
  min-height: 168px;
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
  border-bottom: 1px solid var(--directory-line);
}
.esc-product-directory-list div { min-width: 0; }
.esc-product-directory-list small { display: block; margin-bottom: 7px; }
.esc-product-directory-list strong {
  display: block;
  font-family: var(--font-display);
  font-size: 28px;
  line-height: 1.05;
}
.esc-product-directory-list p {
  max-width: 620px;
  margin: 10px 0 0;
  color: var(--directory-muted);
  font-size: 14px;
  line-height: 1.65;
}
.esc-product-directory-list a,
.esc-product-directory-state {
  min-width: 118px;
  display: inline-flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid currentColor;
  color: var(--directory-ink);
  font-size: 13px;
  font-weight: 720;
}
.esc-product-directory-state { color: var(--directory-muted); border-bottom-color: transparent; }
.esc-product-directory-current { padding: 18px 0 22px; }

.ecounit-site .esc-product-directory {
  --directory-ink: #10261f;
  --directory-muted: rgba(16, 38, 31, .66);
  --directory-line: rgba(16, 38, 31, .24);
  background: #f0c84b;
}
.kyuyucho-site .esc-product-directory {
  --directory-ink: #e9f7ff;
  --directory-muted: rgba(233, 247, 255, .62);
  --directory-line: rgba(105, 221, 255, .3);
  background: #061114;
}
.noteflow-site .esc-product-directory {
  --directory-ink: #f2f6ed;
  --directory-muted: rgba(242, 246, 237, .64);
  --directory-line: rgba(242, 246, 237, .22);
  background: #153e32;
}

@media (max-width: 900px) {
  :root { --site-header-height: 62px; --site-pad: 18px; }
  /* A backdrop filter creates a containing block for the fixed menu on mobile.
     Remove it here so the navigation genuinely covers the viewport. */
  .site-header {
    background: var(--site-bg);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .site-header-inner { gap: 16px; }
  .site-brand { font-size: 19px; }
  .site-menu-toggle {
    position: absolute;
    top: 10px;
    right: var(--site-pad);
    z-index: 5;
    display: grid !important;
    place-items: center;
    border: 1px solid currentColor;
  }
  .site-menu-toggle span,
  .site-menu-toggle span::before,
  .site-menu-toggle span::after { display: none; }
  .site-menu-toggle::after {
    content: "+";
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 400;
    line-height: 1;
  }
  .site-menu-toggle[aria-expanded="true"]::after { content: "x"; font-size: 23px; }
  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 2;
    margin: 0;
    padding: 112px 24px 38px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    color: var(--site-ink);
    background: color-mix(in srgb, var(--site-bg) 96%, transparent);
    white-space: normal;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-12px);
    transition: opacity .25s ease, visibility .25s ease, transform .35s var(--site-ease);
  }
  .site-nav.is-open { opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0); }
  .site-nav a {
    width: 100%;
    min-height: 58px;
    border-bottom: 1px solid var(--site-line);
    font-family: var(--font-display);
    font-size: 27px;
    font-weight: 650;
  }
  .site-nav a:first-child { border-top: 1px solid var(--site-line); }
  .site-nav a[aria-current="page"]::after { display: none; }
  .site-nav-divider { display: none; }
  .site-footer-inner { min-height: 260px; grid-template-columns: 1fr; align-items: start; gap: 26px; }
  .site-footer-brand { font-size: 50px; }
  .site-footer-links { justify-content: flex-start; }
  .legal-main { padding: 118px 0 90px; grid-template-columns: 1fr; gap: 56px; }
  .legal-hero { position: static; }
  .legal-hero h1 { font-size: 58px; }
  .legal-content { width: 100%; }
  .esc-product-directory-heading { min-height: 360px; padding: 70px 0 54px; }
  .esc-product-directory-list li { grid-template-columns: 52px minmax(0, 1fr); gap: 18px; }
  .esc-product-directory-list a,
  .esc-product-directory-state { grid-column: 2; width: max-content; margin-bottom: 26px; }
}

/* Locale switcher and calmer cinematic feedback. The movement is scroll/focus based only. */
.locale-control { display: inline-flex; align-items: center; min-height: 28px; margin-left: 4px; padding-left: 12px; border-left: 1px solid var(--site-line); }
.locale-control select { min-width: 54px; padding: 4px 20px 4px 7px; border: 0; border-radius: 0; color: currentColor; background: transparent; font: 700 10px/1 var(--font-body); letter-spacing: .08em; cursor: pointer; appearance: auto; }
.locale-control select:focus-visible { outline: 2px solid var(--site-accent); outline-offset: 3px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
body::before { content: ''; position: fixed; z-index: 1000; top: 0; left: 0; width: max(0px, calc(var(--page-progress, 0) * 100%)); height: 2px; background: var(--site-accent); pointer-events: none; transition: width .08s linear; }
a:focus-visible, button:focus-visible, select:focus-visible { outline: 2px solid var(--site-accent); outline-offset: 4px; }
@media (min-width: 901px) { .site-nav .locale-control { margin-left: 12px; } }
@media (max-width: 900px) {
  .site-nav .locale-control { width: 100%; min-height: 58px; margin: 0; padding-left: 0; border-bottom: 1px solid var(--site-line); border-left: 0; }
  .site-nav .locale-control select { width: 100%; padding-left: 0; font-family: var(--font-display); font-size: 18px; letter-spacing: .04em; }
}

@media (prefers-reduced-motion: reduce) {
  .site-transition { display: none; }
}

@media (max-width: 560px) {
  .button, .text-link { width: 100%; }
  .legal-main { width: calc(100% - 36px); }
  .legal-hero h1 { font-size: 43px; overflow-wrap: anywhere; }
  .legal-lead { font-size: 15px; }
  .legal-section { grid-template-columns: 1fr; gap: 12px; padding: 25px 0 28px; }
  .legal-section h2 { font-size: 18px; }
  .legal-row { grid-template-columns: 1fr; gap: 4px; }
  .esc-product-directory-heading { min-height: 330px; padding: 64px 0 48px; }
  .esc-product-directory-heading h2 { font-size: 42px; }
  .esc-product-directory-list li { min-height: 0; padding: 28px 0 0; gap: 14px; }
  .esc-product-directory-list strong { font-size: 23px; }
  .esc-product-directory-list p { font-size: 13px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  [data-scrub-stage] { --pointer-x: 0 !important; --pointer-y: 0 !important; --scroll-shift: 0 !important; }
}