/* =====================================================================
   River Tech — base.css (foundation layer, shared by every page)
   Page builders: read docs/components.md. Do not edit this file;
   put page-specific rules in /css/pages/<page>.css.
   1 tokens · 2 surfaces · 3 reset · 4 typography · 5 layout
   6 header · 7 SP menu · 8 footer · 9 buttons · 10 marquee
   11 reveal · 12 sheet, chips, misc · 13 shutter · 14 motion, forced colours · 15 lenis
   ===================================================================== */

/* 1. Tokens ----------------------------------------------------------- */
:root {
  /* palette (greys step 38 -> 45 -> 69 -> 86 -> C2) */
  --c-ink: #121212; --c-paper: #eaeaea; --c-white: #fff;
  --c-band: #383838; --c-line-dark: #454545; --c-mute: #696969; --c-mute-dark: #868686; --c-line: #c2c2c2;
  --c-form-line: #dedede; --c-error: #c42530;
  --c-brand-navy: #001946; --c-brand-mint: #64f0aa;   /* River Tech brand colours (docs/components.md 3.2) */
  --c-accent: var(--c-brand-navy);          /* accent on light surfaces (14.2:1 on paper); never on ink */
  --c-accent-on-dark: var(--c-brand-mint);  /* accent on dark surfaces (13:1 on ink, 8.1:1 on band); never on paper */

  /* families */
  --ff-jp: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic Medium", "Yu Gothic", YuGothic, Meiryo, sans-serif;
  --ff-latin: "Inter Tight", var(--ff-jp);
  --ff-accent: "Bodoni Moda", "Bodoni 72", Didot, "Times New Roman", serif;

  /* type scale: linear 390px -> 1440px viewport (desktop / SP in comments) */
  --fs-display: clamp(3.5rem, 1.8286rem + 6.8571vw, 8rem);        /* 128 / 56 hero catch */
  --fs-banner: clamp(4.5rem, 3.2rem + 5.3333vw, 8rem);            /* 128 / 72 banner marquee */
  --fs-title-xl: clamp(3rem, 1.1429rem + 7.619vw, 8rem);          /* 128 / 48 list page title */
  --fs-title: clamp(3rem, 1.8857rem + 4.5714vw, 6rem);            /* 96 / 48 page title, row ghost */
  --fs-cta: clamp(2.75rem, 2.2857rem + 1.9048vw, 4rem);           /* 64 / 44 footer CTA */
  --fs-h-case: clamp(2rem, 1.6286rem + 1.5238vw, 3rem);           /* 48 / 32 case heading */
  --fs-service-en: clamp(2rem, 1.8143rem + .7619vw, 2.5rem);      /* 40 / 32 service EN title */
  --fs-catch-jp: clamp(1.5rem, 1.3143rem + .7619vw, 2rem);        /* 32 / 24 JP catch, numbers */
  --fs-row: clamp(1.25rem, 1.0643rem + .7619vw, 1.75rem);         /* 28 / 20 row name, JP title */
  --fs-ui-l: clamp(.9375rem, .8679rem + .2857vw, 1.125rem);       /* 18 / 15 button label, JP sub */
  --fs-lead: clamp(.8125rem, .7429rem + .2857vw, 1rem);           /* 16 / 13 pre-line, lead */
  --fs-body: clamp(.9375rem, .9143rem + .0952vw, 1rem);           /* 16 / 15 JP body copy */
  --fs-kicker: clamp(.8125rem, .7661rem + .1905vw, .9375rem);     /* 15 / 13 kicker, index */
  --fs-label: clamp(.8125rem, .7893rem + .0952vw, .875rem);       /* 14 / 13 section label */
  --fs-small: clamp(.75rem, .7268rem + .0952vw, .8125rem);        /* 13 / 12 small UI */
  --fs-en-sub: .75rem;                                             /* 12 EN sub copy */
  --fs-micro: clamp(.625rem, .6018rem + .0952vw, .6875rem);       /* 11 / 10 chips */
  --fs-menu: clamp(1.75rem, 8.205vw, 2.5rem);                      /* 32 @390 SP menu links */
  --ls-display: -.01em; --ls-accent: -.07em; --ls-accent-tight: -.08em;
  --ls-jp: .028em; --ls-label: .04em; --ls-ui: .01em;
  --cap-latin: .727;            /* Inter Tight cap height: the accent serif is matched to it */

  /* spacing rhythm (name = desktop px; 56+ shrink on SP like the reference) */
  --space-24: 1.5rem; --space-40: 2.5rem;
  --space-56: clamp(2.5rem, 2.1286rem + 1.5238vw, 3.5rem);        /* 56 / 40 */
  --space-80: clamp(4rem, 3.6286rem + 1.5238vw, 5rem);            /* 80 / 64 */
  --space-96: clamp(4.5rem, 3.9429rem + 2.2857vw, 6rem);          /* 96 / 72 */
  --space-120: clamp(5rem, 4.0714rem + 3.8095vw, 7.5rem);         /* 120 / 80 */
  --space-200: clamp(10rem, 9.0714rem + 3.8095vw, 12.5rem);       /* 200 / 160 */

  /* radii */
  --r-sheet: clamp(1rem, .8143rem + .7619vw, 1.5rem);             /* 24 / 16 */
  --r-pill: 24px; --r-chip: 10px; --r-media: 8px; --r-thumb: 4px; --r-btn: 60px; --r-round: 50%;
  --sheet-lip: clamp(1.25rem, 1.0643rem + .7619vw, 1.75rem);      /* 28 / 20 */
  --tuck: clamp(1rem, .7214rem + 1.1429vw, 1.75rem);              /* 28 / 16 block over a marquee */

  /* containers, chrome, stacking */
  --w-m: 1280px; --w-l: 1360px; --w-s: 1066px; --w-ss: 958px;
  --header-h: 104px; --z-header: 9999; --z-shutter: 100000; --z-skip: 100001;

  /* motion */
  --ease-shutter: cubic-bezier(.86, 0, .07, 1);
  --ease-expo: cubic-bezier(.16, 1, .3, 1);
  --ease-band: cubic-bezier(.19, 1, .22, 1);
  --ease-quint: cubic-bezier(.23, 1, .32, 1);
  --ease-cubic: cubic-bezier(.215, .61, .355, 1);
  --d-instant: .1s; --d-fast: .2s; --d-base: .3s; --d-menu: .6s;
  --d-fade: 1s; --d-shutter: 1.2s; --d-reveal: 1.5s; --stagger: 80ms;
  --mq-pill: 10s; --mq-row: 40s; --mq-gallery: 45s; --mq-banner: 50s; --mq-statement: 80s;
  --mq-gap-s: .5em; --mq-gap-m: 26px; --mq-gap-l: 80px;

  /* icons (masks; colour comes from background-color) */
  --icon-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M3 10h13.6M11.4 4.8 16.6 10l-5.2 5.2' fill='none' stroke='%23000' stroke-width='1.2'/%3E%3C/svg%3E");
  --icon-arrow-long: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 14'%3E%3Cpath d='M0 7h16.8M10.8 1 16.8 7l-6 6' fill='none' stroke='%23000' stroke-width='1.2'/%3E%3C/svg%3E");
  --icon-glyph: url("/assets/brand/glyph-triangle.svg");   /* signature glyph: the logo's mint triangle */
}

@media (max-width: 768px) { :root { --header-h: 96px; --mq-gallery: 30s; --mq-gap-l: 40px; } }

/* 2. Surfaces: [data-theme] paints a region and re-points semantic tokens */
:root,
[data-theme="light"],
html[data-chrome="simple"] .site-footer {
  --bg: var(--c-paper); --fg: var(--c-ink); --fg-2: var(--c-band); --fg-mute: var(--c-mute);
  --line: var(--c-line); --chip-line: var(--c-line); --accent: var(--c-accent); --on-accent: var(--c-white);
  --btn-label: var(--c-band); --btn-label-hover: var(--c-ink);
}
[data-theme="dark"] {
  --bg: var(--c-ink); --fg: var(--c-white); --fg-2: var(--c-line); --fg-mute: var(--c-mute-dark);
  --line: var(--c-line-dark); --chip-line: var(--c-mute); --accent: var(--c-accent-on-dark); --on-accent: var(--c-ink);
  --btn-label: var(--c-line); --btn-label-hover: var(--c-white);
}
[data-theme] { background-color: var(--bg); color: var(--fg); }

/* 3. Reset (small, own) ----------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; background-color: var(--c-ink); scroll-padding-top: var(--header-h); }
body {
  min-height: 100vh;
  min-height: 100svh;
  background-color: var(--c-paper);
  color: var(--c-ink);
  font-family: var(--ff-jp);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: var(--ls-jp);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, picture, video, canvas, svg { display: block; max-width: 100%; }
img, video { height: auto; }
input, button, textarea, select { font: inherit; color: inherit; letter-spacing: inherit; }
button { padding: 0; border: 0; background: none; cursor: pointer; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, h5, h6 { font-size: inherit; font-weight: inherit; }
p, h1, h2, h3, h4, h5, h6, li, dd { overflow-wrap: break-word; }
ul[class], ol[class] { padding: 0; list-style: none; }
address { font-style: normal; }
table { border-collapse: collapse; }
[hidden] { display: none !important; }
::selection { background-color: var(--accent); color: var(--on-accent); }

/* 4. Typography ------------------------------------------------------- */
.f-latin { font-family: var(--ff-latin); }
/* Fixed small optical size: auto would pick opsz 96 at 64–128px, whose ~0.5px hairlines break up the W, K, T and U.
   "opsz" 11 keeps visible hairlines at every size, like the reference's Didot italic (pages may override). */
.accent-word {
  font-family: var(--ff-accent);
  font-size-adjust: cap-height var(--cap-latin);
  font-style: italic;
  font-weight: 400;
  font-variation-settings: "opsz" 11;
  letter-spacing: var(--ls-accent);
  text-transform: uppercase;
}
.accent-word--tight { letter-spacing: var(--ls-accent-tight); }
.accent-word--color { color: var(--accent); }
.label {
  font-family: var(--ff-latin);
  font-size: var(--fs-label);
  font-weight: 300;
  line-height: 1;
  letter-spacing: var(--ls-label);
}
.label__word {
  font-family: var(--ff-accent);
  font-size-adjust: cap-height var(--cap-latin);
  font-style: italic;
  font-weight: 400;
  letter-spacing: .02em;
  text-transform: uppercase;
}
.label--l { font-size: var(--fs-ui-l); }
.label--rule { padding-top: var(--space-24); border-top: 1px solid var(--line); }
.t-display, .t-banner, .t-title, .t-title-xl, .t-cta, .t-service-en {
  font-family: var(--ff-latin);
  font-weight: 400;
  line-height: 1;
  letter-spacing: var(--ls-display);
  text-transform: uppercase;
}
.t-display { font-size: var(--fs-display); }
.t-banner { font-size: var(--fs-banner); }
.t-title { font-size: var(--fs-title); }
.t-title-xl { font-size: var(--fs-title-xl); }
.t-cta { font-size: var(--fs-cta); }
.t-service-en { font-size: var(--fs-service-en); }
.t-h-case { font-size: var(--fs-h-case); line-height: 1.4; letter-spacing: var(--ls-display); }
.t-catch-jp { font-size: var(--fs-catch-jp); font-weight: 500; line-height: 1.7; letter-spacing: var(--ls-jp); }
.t-row { font-size: var(--fs-row); font-weight: 400; line-height: 1.4; letter-spacing: var(--ls-display); }
.t-num { font-family: var(--ff-latin); font-size: var(--fs-catch-jp); font-weight: 300; line-height: 1; }
.t-jp-sub { font-size: var(--fs-ui-l); font-weight: 300; line-height: 1.6; letter-spacing: var(--ls-jp); }
.t-pre { font-family: var(--ff-latin); font-size: var(--fs-lead); font-weight: 400; line-height: 1; }
.t-lead { font-size: var(--fs-lead); line-height: 1.65; letter-spacing: var(--ls-jp); }
.t-kicker { font-size: var(--fs-kicker); line-height: 1.4; letter-spacing: var(--ls-jp); }
.t-en-sub { font-family: var(--ff-latin); font-size: var(--fs-en-sub); line-height: 1.6; letter-spacing: 0; color: var(--fg-2); }
[data-theme="dark"] .t-en-sub { color: var(--fg-mute); }
.t-small { font-family: var(--ff-latin); font-size: var(--fs-small); font-weight: 300; line-height: 1.6; letter-spacing: var(--ls-ui); }
.t-micro { font-family: var(--ff-latin); font-size: var(--fs-micro); font-weight: 300; line-height: 1.4; letter-spacing: var(--ls-label); }
.tnum { font-variant-numeric: tabular-nums; }
.c-fg-2 { color: var(--fg-2); }
.c-mute { color: var(--fg-mute); }
.c-accent { color: var(--accent); }
.u-optical { margin-inline-start: -.06em; }
.link {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: .22em;
  transition: color var(--d-fast);
}
.glyph {
  display: inline-block;
  flex: none;
  width: var(--glyph, 14px);
  height: var(--glyph, 14px);
  background-color: var(--accent);
  -webkit-mask: var(--icon-glyph) center / contain no-repeat;
  mask: var(--icon-glyph) center / contain no-repeat;
}
.glyph--l { --glyph: clamp(1.5rem, 6.15vw, 2rem); }
.counter, .clock { font-family: var(--ff-latin); font-size: var(--fs-small); font-weight: 300; line-height: 1; letter-spacing: var(--ls-ui); }
.counter { display: flex; flex-direction: column; gap: 6px; }
.clock { display: inline-flex; align-items: center; gap: 8px; font-variant-numeric: tabular-nums; }

/* 5. Layout ----------------------------------------------------------- */
.container { width: 90%; max-width: var(--w-m); margin-inline: auto; }
.container--l { max-width: var(--w-l); }
.container--ll { max-width: none; }
.container--s { width: 80%; max-width: var(--w-s); }
.container--ss { width: 80%; max-width: var(--w-ss); }
.container--max { width: calc(100% - 20px); max-width: none; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: var(--z-skip);
  padding: 12px 18px;
  border-radius: var(--r-media);
  background-color: var(--c-ink);
  color: var(--c-white);
  font-size: 14px;
  line-height: 1;
  transform: translateY(-200%);
  transition: transform var(--d-fast) var(--ease-cubic);
}
.skip-link:focus { transform: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
@media (min-width: 769px) { .sp-only { display: none !important; } }
@media (max-width: 768px) {
  .pc-only { display: none !important; }
  .container--s, .container--ss { width: 85%; }
}

/* 6. Header ----------------------------------------------------------- */
.site-header {
  --hd-line: var(--c-line);
  --hd-tick: var(--c-accent-on-dark);
  --hd-on-tick: var(--c-ink);
  --hd-logo: var(--c-white);
  position: fixed;
  inset: 0 0 auto;
  z-index: var(--z-header);
  color: var(--c-white);
  pointer-events: none;
  transition: color var(--d-fast);
}
html[data-header="ink"] .site-header,
html.is-menu-open .site-header {
  --hd-line: var(--c-mute-dark);
  --hd-tick: var(--c-accent);
  --hd-on-tick: var(--c-white);
  --hd-logo: var(--c-brand-navy);
  color: var(--c-ink);
}
.site-header :focus-visible { outline-color: currentColor; }
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 32px 16px 40px;
}
.site-header__logo { position: relative; z-index: 2; display: block; width: 120px; color: var(--hd-logo); pointer-events: auto; transition: color var(--d-fast); }
.site-header__logo svg, .site-footer__logo svg { width: 100%; height: auto; overflow: visible; }
.site-header__burger { display: none; }
.site-header__panel { display: flex; align-items: center; pointer-events: auto; }
.site-nav__list { display: flex; align-items: center; gap: 24px; }
.site-nav__item--cta { margin-left: 16px; }
.site-nav__link {
  position: relative;
  display: inline-block;
  padding-block: 6px;
  font-family: var(--ff-latin);
  font-size: 13px;
  font-weight: 300;
  line-height: 1;
  letter-spacing: var(--ls-ui);
}
.site-nav__link::after {
  content: "";
  position: absolute;
  bottom: 3px;
  left: 50%;
  width: 12px;
  height: 1px;
  background-color: currentColor;
  transform: translateX(-50%) scaleX(0);
  transition: transform var(--d-fast) var(--ease-cubic), background-color var(--d-fast);
}
.site-nav__link[aria-current]::after { background-color: var(--hd-tick); transform: translateX(-50%) scaleX(1); }
.site-nav__link:focus-visible::after { transform: translateX(-50%) scaleX(1); }
.pill-cta {
  position: relative;
  display: flex;
  width: 140px;
  padding: 24px 0;
  border: 1px solid var(--hd-line);
  border-radius: var(--r-pill);
  overflow: hidden;
  isolation: isolate;
  font-family: var(--ff-latin);
  font-size: 14px;
  font-weight: 300;
  line-height: 1;
  letter-spacing: var(--ls-ui);
  white-space: nowrap;
  transition: color var(--d-fast), border-color var(--d-fast), background-color var(--d-fast);
}
.pill-cta .marquee { width: 100%; }
.site-header .pill-cta:focus-visible { outline-color: var(--hd-tick); }
.pill-cta:focus-visible,
.pill-cta.is-hover { border-color: var(--hd-tick); background-color: var(--hd-tick); color: var(--hd-on-tick); }
@media (hover: hover) and (pointer: fine) {
  .site-nav__link:hover::after { transform: translateX(-50%) scaleX(1); }
  .pill-cta:hover { border-color: var(--hd-tick); background-color: var(--hd-tick); color: var(--hd-on-tick); }
}
.site-menu__direct { display: none; }
/* Simple chrome (<html data-chrome="simple">: contact, thanks): logo-only header at the usual logo position,
   and a minimal light footer (legal line, Privacy, Motion) in place of the nav and the CTA block. */
html[data-chrome="simple"] :is(.site-header__burger, .site-header__panel, .site-footer__nav, .site-footer__contents, .site-footer__logo) { display: none; }
html[data-chrome="simple"] .site-header__inner { min-height: var(--header-h); }

/* 7. SP menu (<=768px) ------------------------------------------------- */
@media (max-width: 768px) {
  .site-header__inner { width: 90%; margin-inline: auto; padding: 28px 0; }
  .site-header__logo { width: 96px; }
  .site-header__burger {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 40px;
    height: 40px;
    margin-right: -6px;
    padding: 16px 6px;
    border-radius: var(--r-thumb);
    pointer-events: auto;
  }
  .site-header__burger span {
    display: block;
    height: 2px;
    background-color: currentColor;
    transition: transform var(--d-base) ease;
  }
  html.is-menu-open .site-header__burger span:first-child { transform: translateY(3px) rotate(45deg); }
  html.is-menu-open .site-header__burger span:last-child { transform: translateY(-3px) rotate(-45deg); }
  .site-header__panel {
    position: fixed;
    inset: 0;
    z-index: 1;
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    height: 100vh;
    height: 100dvh;
    padding: 80px 10%;
    overflow-y: auto;
    overscroll-behavior: contain;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--d-fast) ease, visibility 0s linear var(--d-fast);
  }
  .site-header__panel::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background-color: var(--c-white);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform var(--d-menu) var(--ease-quint);
  }
  html.is-menu-open .site-header__panel { opacity: 1; visibility: visible; transition: opacity var(--d-fast) ease; }
  html.is-menu-open .site-header__panel::before { transform: scaleY(1); }
  .site-nav__list { flex-direction: column; align-items: flex-end; gap: 0; }
  /* slide-up mask: clip-path cuts only the bottom edge (4px below the li), so focus rings are not clipped */
  .site-nav__item { padding-bottom: .2em; text-align: right; clip-path: inset(-12px -12px -4px -12px); }
  .site-nav__item + .site-nav__item { margin-top: 1.1rem; }
  .site-nav__item--cta { margin: 0; }
  .site-nav__item + .site-nav__item--cta { margin-top: 26.5px; } /* pill top 36.5px under the About glyphs */
  .site-nav__link { padding-block: 0; font-size: var(--fs-menu); }
  .site-nav__link::after { bottom: -.1em; }
  .site-nav__item > * {
    transform: translate3d(0, 140%, 0);
    transition: transform var(--d-menu) var(--ease-expo) calc(var(--i, 0) * 60ms + 80ms);
  }
  html.is-menu-open .site-nav__item > * { transform: none; }
  .pill-cta { width: 180px; font-size: 24px; }
  html:not(.is-menu-open) .site-header__panel .marquee__track { animation-play-state: paused; }
  .site-menu__direct {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 16px;
    margin-top: 80px;
    font-family: var(--ff-latin);
    font-size: 14px;
    font-weight: 300;
    line-height: 1;
    letter-spacing: var(--ls-label);
  }
  .site-menu__direct li { display: flex; gap: 8px; }
  .site-menu__direct a { text-decoration: underline; text-underline-offset: .2em; }
}

/* 8. Footer ----------------------------------------------------------- */
/* No top padding (as the reference): the nav rule sits on the footer's top edge. A light last region carries its own bottom padding. */
.site-footer { padding: 0 0 48px; }
.site-footer__nav { padding-top: 48px; border-top: 1px solid var(--c-line-dark); }
.site-footer__nav ul { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 12px 24px; padding: 0; list-style: none; }
.site-footer__nav li { line-height: 1.15; }
.site-footer__nav a, .site-footer__direct, .site-footer__bottom { font-family: var(--ff-latin); line-height: 1; }
.site-footer__nav a { font-size: var(--fs-small); letter-spacing: var(--ls-ui); color: var(--c-line); transition: color var(--d-fast); }
.site-footer__nav a[aria-current] { color: var(--c-white); }
.site-footer__contents { display: flex; justify-content: space-between; gap: var(--space-40); margin-top: var(--space-96); }
.site-footer__kicker { font-size: var(--fs-kicker); font-weight: 500; line-height: 1.4; letter-spacing: var(--ls-jp); }
.footer-cta {
  position: relative;
  display: inline-block;
  margin-top: clamp(1px, .2571px + .1905vw, 3px); /* cap top 15/12px under the kicker glyphs (the reference's inline link ignores its 12px) */
  font-family: var(--ff-latin);
  font-size: var(--fs-cta);
  line-height: 1;
  letter-spacing: var(--ls-display);
  text-transform: uppercase;
}
.footer-cta .accent-word { margin-inline-end: .08em; letter-spacing: -.06em; transition: color var(--d-fast); }   /* the full stop clears the italic's last stroke */
.footer-cta .rv-mask { padding-inline-end: .12em; margin-inline-end: -.12em; }
/* The 2px rule draws in from the left after the masked text has risen (never a bare rule under the kicker). */
.footer-cta::after {
  content: "";
  display: block;
  height: 2px;
  background-color: currentColor;
  transform-origin: left center;
  transition: transform var(--d-fade) var(--ease-expo) .4s;
}
.rv-on .site-footer__cta:not(.is-in) .footer-cta::after { transform: scaleX(0); }
.site-footer__note { margin-top: 42px; font-size: var(--fs-small); line-height: 1.6; color: var(--c-line); word-break: keep-all; word-break: auto-phrase; overflow-wrap: anywhere; text-wrap: pretty; }
.site-footer__links { display: flex; flex-direction: column; align-items: flex-end; justify-content: space-between; gap: 32px; }
.site-footer__direct { display: flex; flex-direction: column; gap: 12px; font-size: var(--fs-small); font-weight: 300; letter-spacing: var(--ls-label); color: var(--c-line); }
.site-footer__direct li { display: flex; justify-content: flex-end; gap: 8px; }
.site-footer__direct a, .site-footer__privacy { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .22em; transition: color var(--d-fast); }
.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 32px;
  margin-top: var(--space-80);
  font-size: 12px;
  font-weight: 300;
  letter-spacing: var(--ls-ui);
  color: var(--fg-mute);
}
.site-footer__legal { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px; }
.site-footer__logo { display: block; width: 96px; color: var(--c-white); }
.site-footer__legal :is(address, .site-footer__privacy) { font-family: var(--ff-jp); letter-spacing: var(--ls-jp); }
.site-footer__privacy { padding-block: 6px; margin-block: -6px; }   /* 24px target, no layout change */
.site-footer__privacy[aria-current] { color: var(--fg); }
html[data-chrome="simple"] .site-footer { padding-bottom: 0; }
html[data-chrome="simple"] .site-footer__bottom { margin-top: 0; padding-block: var(--space-40); border-top: 1px solid var(--line); }
.footer-cta:focus-visible::after,
.footer-cta.is-hover::after { animation: rt-wipe .9s both; }
.footer-cta:focus-visible .accent-word,
.footer-cta.is-hover .accent-word { color: var(--accent); }
@media (hover: hover) and (pointer: fine) {
  .site-footer__nav a:hover, .site-footer__direct a:hover, .site-footer__privacy:hover { color: var(--fg); }
  .footer-cta:hover::after { animation: rt-wipe .9s both; }
  .footer-cta:hover .accent-word { color: var(--accent); }
}
@keyframes rt-wipe {
  0% { transform: scaleX(1); transform-origin: right center; animation-timing-function: cubic-bezier(.7, 0, .84, 0); }
  45% { transform: scaleX(0); transform-origin: right center; }
  46% { transform: scaleX(0); transform-origin: left center; animation-timing-function: var(--ease-expo); }
  100% { transform: scaleX(1); transform-origin: left center; }
}
.motion-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-btn);
  font-family: var(--ff-latin);
  font-size: 12px;
  line-height: 1;
  letter-spacing: var(--ls-label);
  color: var(--fg-2);
  transition: color var(--d-fast), border-color var(--d-fast);
}
.motion-toggle::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: var(--r-round);
  background-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}
.motion-toggle[aria-checked="false"]::before { background-color: transparent; box-shadow: inset 0 0 0 1px currentColor; }
html:not(.js) .motion-toggle { display: none; }
@media (hover: hover) and (pointer: fine) {
  .motion-toggle:hover { border-color: var(--fg-2); color: var(--fg); }
}
@media (max-width: 768px) {
  .site-footer { padding-bottom: 24px; }
  .site-footer__contents { flex-direction: column; }
  .footer-cta { display: block; }
  .site-footer__note { margin-top: 24px; }
  /* colophon stack: logo, ©, address, Privacy (one line each), then Motion */
  .site-footer__bottom { flex-direction: column; align-items: flex-start; gap: var(--space-24); }
  .site-footer__legal { flex-direction: column; align-items: flex-start; gap: 12px; }
  .site-footer__logo { margin-bottom: 4px; }
}

/* 9. Buttons ---------------------------------------------------------- */
.btn-ring {
  --ring: 44px;
  --ring-inset: 1px;
  --ring-arrow: 20px;
  display: inline-flex;
  align-items: center;
  gap: 16px;
  width: fit-content;
  font-family: var(--ff-latin);
  font-size: var(--fs-ui-l);
  line-height: 1;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--btn-label);
  transition: color var(--d-fast);
}
.btn-ring__label { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .2em; }
.btn-ring__icon {
  position: relative;
  flex: none;
  width: var(--ring);
  height: var(--ring);
  border: 1px solid var(--accent);
  border-radius: var(--r-round);
  transition: background-color var(--d-fast);
}
.btn-ring__icon::before {
  content: "";
  position: absolute;
  inset: var(--ring-inset);
  border: 1px solid var(--accent);
  border-radius: var(--r-round);
  transition: border-color var(--d-fast);
}
.btn-ring__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--ring-arrow);
  height: var(--ring-arrow);
  margin: calc(var(--ring-arrow) / -2) 0 0 calc(var(--ring-arrow) / -2);
  background-color: var(--accent);
  -webkit-mask: var(--icon-arrow) center / contain no-repeat;
  mask: var(--icon-arrow) center / contain no-repeat;
  transition: background-color var(--d-fast), transform var(--d-fast) var(--ease-cubic);
}
.btn-ring--mini { --ring: 40px; --ring-inset: 1.5px; --ring-arrow: 18px; font-size: var(--fs-kicker); }
.btn-ring--center { display: flex; margin-inline: auto; }
.btn-ring:focus-visible { outline-offset: 6px; }
.btn-ring:focus-visible, .btn-ring.is-hover { color: var(--btn-label-hover); }
.btn-ring:focus-visible .btn-ring__icon, .btn-ring.is-hover .btn-ring__icon { background-color: var(--accent); }
.btn-ring:focus-visible .btn-ring__icon::before, .btn-ring.is-hover .btn-ring__icon::before { border-color: var(--on-accent); }
.btn-ring:focus-visible .btn-ring__icon::after, .btn-ring.is-hover .btn-ring__icon::after { background-color: var(--on-accent); transform: translateX(3px); }
.btn-pill, .btn-back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  font-family: var(--ff-latin);
  font-size: 14px;
  font-style: italic;
  line-height: 1;
  letter-spacing: .02em;
  text-transform: uppercase;
  transition: background-color var(--d-fast), color var(--d-fast), border-color var(--d-fast);
}
.btn-pill {
  min-width: 228px;
  padding: 18px 40px;
  border: 1px solid var(--c-line-dark);
  border-radius: var(--r-btn);
  background-color: var(--c-white);
  color: var(--c-ink);
}
.btn-pill::after, .btn-back::before {
  content: "";
  flex: none;
  width: 18px;
  height: 14px;
  background-color: currentColor;
  -webkit-mask: var(--icon-arrow-long) center / contain no-repeat;
  mask: var(--icon-arrow-long) center / contain no-repeat;
  transition: transform var(--d-fast) var(--ease-cubic);
}
.btn-back { padding: 12px 0; border-radius: var(--r-btn); color: var(--fg); }
.btn-back::before { transform: scaleX(-1); }
.btn-pill:focus-visible, .btn-pill.is-hover { background-color: var(--c-ink); color: var(--c-white); }
.btn-pill:focus-visible::after, .btn-pill.is-hover::after { transform: translateX(3px); }
.btn-back:focus-visible::before, .btn-back.is-hover::before { transform: translateX(-3px) scaleX(-1); }
@media (hover: hover) and (pointer: fine) {
  .btn-ring:hover { color: var(--btn-label-hover); }
  .btn-ring:hover .btn-ring__icon { background-color: var(--accent); }
  .btn-ring:hover .btn-ring__icon::before { border-color: var(--on-accent); }
  .btn-ring:hover .btn-ring__icon::after { background-color: var(--on-accent); transform: translateX(3px); }
  .btn-pill:hover { background-color: var(--c-ink); color: var(--c-white); }
  .btn-pill:hover::after { transform: translateX(3px); }
  .btn-back:hover::before { transform: translateX(-3px) scaleX(-1); }
  .link:hover { color: var(--accent); }
}
@media (max-width: 768px) {
  .btn-pill, .btn-back { font-size: 12px; }
  .btn-pill { min-width: 180px; padding: 14px 32px; }
  .btn-ring--mini { font-size: var(--fs-small); }
}

/* 10. Marquee: two identical copies, seamless (-100% minus the gap) ----- */
.marquee {
  --mq-dur: var(--mq-banner);
  --mq-gap: var(--mq-gap-m);
  display: flex;
  gap: var(--mq-gap);
  overflow: hidden;
  white-space: nowrap;
}
.marquee__track {
  display: flex;
  flex: none;
  gap: var(--mq-gap);
  min-width: 100%;
  animation: rt-marquee var(--mq-dur) linear infinite;
}
.marquee__track > * { flex: none; }
.marquee--reverse .marquee__track { animation-direction: reverse; }
.marquee--10 { --mq-dur: var(--mq-pill); }
.marquee--40 { --mq-dur: var(--mq-row); }
.marquee--45 { --mq-dur: var(--mq-gallery); }
.marquee--50 { --mq-dur: var(--mq-banner); }
.marquee--80 { --mq-dur: var(--mq-statement); }
.marquee--gap-s { --mq-gap: var(--mq-gap-s); }
.marquee--gap-m { --mq-gap: var(--mq-gap-m); }
.marquee--gap-l { --mq-gap: var(--mq-gap-l); }
.marquee--hover-pause:hover .marquee__track,
.marquee--hover-pause:focus-within .marquee__track,
.marquee.is-offscreen .marquee__track,
.marquee.is-paused .marquee__track,
html[data-motion="paused"] .marquee__track { animation-play-state: paused; }
@keyframes rt-marquee {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(calc(-100% - var(--mq-gap)), 0, 0); }
}

/* 11. Reveal (hidden states only while html.rv-on, i.e. JS armed + motion on) */
.rv-mask { display: block; overflow: hidden; padding-bottom: .14em; margin-bottom: -.14em; }
.rv-mask--inline { display: inline-block; vertical-align: top; }
.rv-mask > * { display: inline-block; }
.rv-on .rv-mask > * {
  transform: translate3d(0, calc(100% + .2em), 0);
  transition: transform var(--d-reveal) var(--ease-expo) calc(var(--i, 0) * var(--stagger));
}
.rv-on .rv-up {
  opacity: 0;
  transform: translate3d(0, 80px, 0);
  transition: opacity var(--d-fade) ease, transform var(--d-fade) ease;
  transition-delay: calc(var(--i, 0) * var(--stagger));
}
.rv-on .rv-fade {
  opacity: 0;
  transition: opacity .8s ease-out calc(var(--i, 0) * var(--stagger));
}
.rv-on .rv-mask.is-in > *, .rv-on .is-in .rv-mask > * { transform: none; }
.rv-on .rv-up.is-in, .rv-on .is-in .rv-up,
.rv-on .rv-fade.is-in, .rv-on .is-in .rv-fade { opacity: 1; transform: none; }
@media (max-width: 768px) {
  .rv-on .rv-up { transform: translate3d(0, 56px, 0); transition-duration: 1.2s; }
}

/* 12. Sheet, curtain, chips, vertical copyright ------------------------- */
.curtain-stage { position: sticky; top: 0; z-index: 0; height: 100vh; height: 100svh; overflow: hidden; }
.curtain-stage ~ * { position: relative; z-index: 1; }
.sheet {
  position: relative;
  z-index: 1;
  margin-top: calc(var(--sheet-lip) * -1);
  border-radius: var(--r-sheet) var(--r-sheet) 0 0;
  background-color: var(--bg);
}
.tuck { position: relative; z-index: 1; margin-top: calc(var(--tuck) * -1); border-top: 1px solid var(--line); background-color: var(--bg); }
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  display: inline-flex;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--chip-line);
  border-radius: var(--r-chip);
  font-family: var(--ff-latin);
  font-size: var(--fs-micro);
  font-weight: 300;
  line-height: 1;
  letter-spacing: var(--ls-label);
  color: var(--fg-2);
}
.v-copy {
  position: absolute;
  top: 50vh;
  left: 59px;
  z-index: 100;
  font-family: var(--ff-latin);
  font-size: var(--fs-small);
  font-weight: 300;
  line-height: 1;
  letter-spacing: var(--ls-ui);
  white-space: nowrap;
  color: var(--c-line);
  transform: translate(-50%, -50%) rotate(90deg);
  pointer-events: none;
}
@media (max-width: 768px) {
  .curtain-stage { height: 90vh; height: 90svh; }
  .v-copy { top: 35vh; left: 5vw; font-size: 11px; }
}

/* 13. Shutter (opening; home only; boot.js adds .shutter-skip) ---------- */
.shutter { display: none; }
html.js .shutter { position: fixed; inset: 0; z-index: var(--z-shutter); display: block; }
.shutter__panel { position: absolute; inset: 0; background-color: var(--c-ink); transform-origin: top center; }
.shutter.is-open { pointer-events: none; }
.shutter.is-open .shutter__panel {
  transform: scaleY(0);
  transition: transform var(--d-shutter) var(--ease-shutter) .4s;
}
html.shutter-skip .shutter, html.rt-fallback .shutter { display: none; }

/* 14. Motion contract -------------------------------------------------- */
html[data-motion="on"]:not(.lenis) { scroll-behavior: smooth; }
html.is-scroll-locked { overflow: hidden; }
@media (prefers-reduced-motion: reduce) {
  html:not([data-motion="on"]) { scroll-behavior: auto; }
  html:not([data-motion="on"]) *,
  html:not([data-motion="on"]) *::before,
  html:not([data-motion="on"]) *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    transition-delay: 0s !important;
    scroll-behavior: auto !important;
  }
}

/* Forced colours (Windows High Contrast): background/mask glyphs would be painted Canvas and vanish */
@media (forced-colors: active) {
  .site-header__burger span, .site-nav__link::after, .btn-ring__icon::after, .btn-pill::after, .btn-back::before,
  .footer-cta::after, .motion-toggle::before, .glyph { forced-color-adjust: none; background-color: CanvasText; }
  .motion-toggle[aria-checked="false"]::before { background-color: Canvas; box-shadow: inset 0 0 0 1px CanvasText; }
}

/* 15. Lenis (vendor 1.3.x) --------------------------------------------- */
html.lenis, html.lenis body { height: auto; }
.lenis:not(.lenis-autoToggle).lenis-stopped { overflow: clip; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-smooth iframe { pointer-events: none; }