:root {
  --color-bg: #ffffff;
  --color-ink: #1a1a1a;
  --color-ink-2: #555555;
  --color-ink-3: #8a8a8a;
  --color-grid: #ececec;
  --font-jp: "LINE Seed JP", "Noto Sans JP", sans-serif;
  --font-en: "Figtree", "LINE Seed JP", sans-serif;
    --font-size-jp-display: 32px;
  --font-size-jp-lead: 14px;
  --font-size-jp-button: 15px;
  --font-size-jp-nav: 15px;
  --font-size-en-eyebrow: 15px;
  --font-size-en-menu: 13px;
  --gutter: 20px;
  --grid-step: 32px;
    --ease-snap: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-morph: cubic-bezier(0.7, 0, 0.2, 1);
  --morph-duration: 1.1s;
}

@media (min-width: 960px) {
  :root {
        --font-size-jp-display: 56px;
    --font-size-jp-lead: 16px;
    --font-size-en-eyebrow: 16px;
    --gutter: 80px;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--font-jp);
  color: var(--color-ink);
  background-color: var(--color-bg);
    background-image:
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px);
  background-size: var(--grid-step) var(--grid-step);
  background-position: 0 0;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
p, h1 { margin: 0; }

.site-header {
  position: absolute; top: 0; left: 0; right: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 12px 0 20px;
}
.site-header__logo { display: block; padding: 8px 0; }   .site-header__logo img { height: 28px; width: auto; }
.site-header__nav { display: none; }
.site-header__menu {
  width: 64px; height: 44px;                         border: 0; border-radius: 8px; padding: 0;
  background: var(--color-ink); color: #fff;
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.04em;
  cursor: pointer;
}
@media (min-width: 960px) {
    .site-header { position: relative; height: 80px; padding: 0 var(--gutter); background: var(--color-bg); border-bottom: 1px solid var(--color-ink); }
  .site-header__logo img { height: 36px; }
  .site-header__menu { display: none; }
  .site-header__nav { display: flex; align-items: center; gap: 32px; }
  .site-header__nav a:not(.btn) { color: inherit; text-decoration: none; font-weight: 700; font-size: var(--font-size-jp-nav); }
  .site-header__nav .ext { display: inline-flex; align-items: center; gap: 4px; }
  .site-header__nav .ext svg { width: 14px; height: 14px; }
  .site-header__nav .btns { display: flex; gap: 12px; margin-left: 8px; }
}

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 56px; padding: 0 24px;
  font-weight: 700; font-size: var(--font-size-jp-button);
  text-decoration: none;
  border: 1px solid var(--color-ink);
  background: var(--color-ink); color: #fff;
}
.btn--ghost { background: var(--color-bg); color: var(--color-ink); }

.btn-c {
  display: inline-flex; align-items: stretch;
  width: 240px; height: 56px;
  border-radius: 8px; overflow: hidden;
  background: var(--color-ink); color: #fff;
  text-decoration: none;
  box-shadow: inset 0 0 0 1px var(--color-ink);
}
.btn-c__label { flex: 1; display: flex; align-items: center; padding: 0 24px; font-weight: 700; font-size: var(--font-size-jp-button); }
.btn-c__icon { width: 56px; display: grid; place-items: center; border-left: 1px solid var(--color-ink-2); transition: background-color 0.2s ease, color 0.2s ease; }
.btn-c__icon svg { width: 16px; height: 16px; }
.btn-c:hover .btn-c__icon, .btn-c:focus-visible .btn-c__icon { background: var(--color-bg); color: var(--color-ink); }   
.link-u {
  display: inline-block; padding: 12px 0;         font-weight: 700; font-size: var(--font-size-jp-button); line-height: 1.6;
  color: var(--color-ink);
  text-decoration: underline; text-underline-offset: 6px; text-decoration-thickness: 1px;
}
.link-u:hover { text-decoration-thickness: 2px; }

.mv {
  position: relative;
  padding: 32px 16px 32px;
}
.mv__house { position: relative; }
.mv__copy { margin-top: 31px; padding: 0 16px; }
.mv__en {
  font-family: var(--font-en);
  font-weight: 600;
  font-size: var(--font-size-en-eyebrow);
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--color-ink-2);
}
.mv__title {
  margin-top: 8px;
  font-weight: 700;
  font-size: var(--font-size-jp-display);
  line-height: 1.4;
}
.mv__title, .mv__lead { word-break: keep-all; overflow-wrap: anywhere; }
.mv__lead {
  margin-top: 12px;
  font-size: var(--font-size-jp-lead);
  line-height: 1.8;
  color: var(--color-ink);
}
.mv__btns { display: flex; align-items: center; gap: 24px; margin-top: 24px; }
.mv__btns .link-u { display: none; }   
@media (min-width: 960px) {
  .mv {
    display: grid;
    grid-template-columns: 1fr 1.25fr;
    align-items: center;
    gap: 64px;
    min-height: calc(100vh - 80px);
    padding: 48px var(--gutter);
  }
  .mv__copy { margin-top: 0; padding: 0; order: -1; }
  .mv__title { margin-top: 20px; }
  .mv__lead { margin-top: 20px; max-width: 30em; }
  .mv__btns { margin-top: 40px; }
  .mv__btns .link-u { display: inline-block; }
}

.mv-house {
  position: relative;
  aspect-ratio: 358.5 / 370;        }
@media (min-width: 960px) {
  .mv-house { max-height: calc(100vh - 176px); margin-left: auto; }
}
.mv-house__mask {
  position: absolute; inset: 0;
  overflow: hidden;
  background: #f2f2f2;                clip-path: var(--shape);
  transition: clip-path var(--morph-duration) var(--ease-morph);
  transform-origin: 0 0;
}
.mv-house__scene {
  position: absolute; inset: 0;
  margin: 0;
  opacity: 0;
  transition: opacity 0.9s ease;
}
.mv-house__scene video {
  display: block;
  width: 100%; height: 100%;
  object-fit: cover;                 transform: scale(1.06);
}
.mv-house__scene[data-shape="tell"] video { object-position: 74% 50%; }
.mv-house__scene[data-shape="connect"] video { object-position: 42% 50%; }
.mv-house__scene.is-active { opacity: 1; }
.mv-house__scene.is-active video {
  transform: scale(1);
  transition: transform 6s linear;   }
.mv-house.is-intro .mv-house__scene { opacity: 0; transition: none; }
.mv-house.is-intro .mv-house__mask { transition: none; background: var(--color-ink); }

.mv-progress {
  position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%);
  display: flex; gap: 8px;
}
.mv-progress span {
  position: relative; flex: 1; height: 2px;
  background: var(--color-grid);
  overflow: hidden;
}
.mv-progress span::after {
  content: ""; position: absolute; inset: 0;
  background: var(--color-ink);
  transform: scaleX(0); transform-origin: 0 50%;
}
.mv-progress span.is-done::after { transform: scaleX(1); }
.mv-progress span.is-active::after { animation: progress var(--scene-ms, 4500ms) linear forwards; }
.mv-progress__label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.mv-pause {
  position: absolute; right: 4px; bottom: 4px; z-index: 1;
  width: 44px; height: 44px; padding: 0;             display: grid; place-items: center;
  border: 0; background: none; color: #fff;
  cursor: pointer;
}
.mv-pause::before {
  content: ""; position: absolute; inset: 4px;
  border-radius: 8px; background: rgba(26, 26, 26, 0.72);
}
.mv-pause svg { position: relative; width: 14px; height: 14px; }
.mv-pause .i-play { display: none; }
.mv-pause[aria-pressed="true"] .i-play { display: block; }
.mv-pause[aria-pressed="true"] .i-pause { display: none; }
@keyframes progress { to { transform: scaleX(1); } }
@media (min-width: 960px) {  }
.mv-progress.is-paused span::after { animation-play-state: paused; }

.is-before-reveal [data-reveal] { opacity: 0; transform: translateY(12px); }
[data-reveal] { transition: opacity 0.6s ease, transform 0.6s var(--ease-snap); }

.splash {
  position: fixed; inset: 0; z-index: 10;
  display: grid; place-items: center;
  background-color: var(--color-bg);
  background-image:
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px);
  background-size: var(--grid-step) var(--grid-step);
  background-position: 0 0;
  transition: background-color 0.5s ease, opacity 0.5s ease;
}
.splash.is-leaving { background-color: transparent; background-image: none; }
.splash.is-gone { opacity: 0; pointer-events: none; }
.splash__logo { width: 132px; height: auto; overflow: visible; }
@media (min-width: 960px) { .splash__logo { width: 168px; } }
.splash__logo .blk,
.splash__logo .wm { transform-box: fill-box; transform-origin: center; }

.scroll-cue {
  position: absolute; z-index: 1;
  right: 34px; top: calc(100svh - 152px);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  transition: opacity 0.4s ease;
}
.scroll-cue.is-hidden { opacity: 0; }
.scroll-cue__track {
  position: relative; display: block;
  width: 4px; height: 123px; border-radius: 2px;
  background: var(--color-ink-3, #8a8a8a);
  overflow: hidden;
}
.scroll-cue__thumb {
  position: absolute; left: 0; top: 0;
  width: 4px; height: 32px; border-radius: 2px;
  background: var(--color-ink);
  animation: cue-run 2.4s infinite;
}
.scroll-cue__dot {
  display: block; width: 4px; height: 8px; border-radius: 2px;
  background: var(--color-ink-3, #8a8a8a);
  animation: cue-dot 2.4s infinite;
}
@keyframes cue-run {
  0%   { transform: translateY(-32px); animation-timing-function: cubic-bezier(0.65, 0, 0.35, 1); }
  65%  { transform: translateY(123px); }
  100% { transform: translateY(123px); }
}
@keyframes cue-dot {
  0%, 58%  { background: var(--color-ink-3, #8a8a8a); }
  66%      { background: var(--color-ink); }
  90%, 100% { background: var(--color-ink-3, #8a8a8a); }
}
@media (min-width: 960px) {
  .scroll-cue { right: 40px; top: calc(100vh - 160px); }   }

@media (prefers-reduced-motion: reduce) {
  .splash { display: none; }
  .mv-house__mask, .mv-house__scene, .mv-house__scene video, [data-reveal] { transition: none !important; }
  .scroll-cue__thumb, .scroll-cue__dot { animation: none; }
  .scroll-cue__thumb { display: none; }
}