/* =========================================================
   Satellus — Corporate Site  (Draft v1.1 / performance fix)
   方針：常時アニメーションは transform / opacity のみ。
         スクロール連動のJS処理なし。backdrop-filter・SMIL・
         アニメーション要素への filter は使用しない。
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  /* Night */
  --c-night-950: #05070f;
  --c-night-900: #070a14;
  --c-night-800: #0c1122;
  --c-night-700: #141b33;
  --c-line-dark: rgba(196, 206, 235, .16);
  --c-star: #eef0f6;
  --c-star-2: #b9c0d4;
  --c-star-3: #8b94ab;
  --c-orbit: #8ea2d8;
  /* Light / Dawn */
  --c-dawn: #e9c8a2;
  --c-dawn-strong: #f3dcc0;
  --c-paper: #f2f0eb;
  --c-paper-2: #e7e3da;
  --c-ink: #141a2c;
  --c-ink-2: #434a5e;
  --c-ink-3: #656b7e;
  --c-accent-ink: #7a5a30;
  --c-line-light: rgba(20, 26, 44, .14);
  --c-error: #b3261e;

  --font-jp: "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", sans-serif;
  --font-mincho: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-en: "Jost", "Helvetica Neue", Arial, sans-serif;

  --container: 1200px;
  --gutter: clamp(20px, 5vw, 64px);
  --header-h: 72px;
  --ease-out: cubic-bezier(.16, 1, .3, 1);

  /* FV：画像の主光源（フォーカス）位置。正式画像に合わせて調整 */
  --hero-focus-x: 74%;
  --hero-focus-y: 38%;
  --hero-img-pos: 50% 50%;
}
@media (min-width: 960px) { :root { --container: 1240px; } }
@media (max-width: 767px) {
  :root {
    --header-h: 60px;
    --hero-focus-x: 50%;
    --hero-focus-y: 38%;
    --hero-img-pos: 82% 50%;
  }
  .hero__scroll { bottom: 32px; }
}
/* SVG背景は 16:9 をcover表示している。小さい安定viewportの高さを基準に、
   光源（74%, 38%）とobject-position: 82%の切り抜き後の実座標へ軌道の中心を合わせる。 */
@supports (height: 100svh) {
  @media (max-width: 767px) {
    :root { --hero-focus-x: calc(82% - 14.222svh); }
  }
}
/* PCで表示領域が16:9より縦長になると、coverはSVGを高さ基準で拡大する。
   背景SVG内の光源（x: 74%）の描画後座標へ軌道の中心も追従させる。 */
@supports (height: 100svh) {
  @media (min-width: 768px) and (max-aspect-ratio: 16 / 9) {
    :root { --hero-focus-x: calc(50% + 42.6667svh); }
  }
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  overflow-x: clip;
}
body {
  margin: 0;
  /* 静的な背景星。固定レイヤーやJSを使わないためスクロールに追従しない。 */
  background-color: var(--c-night-900);
  background-image:
    radial-gradient(circle at 30px 40px, rgba(238,240,246,.85) 0 1px, transparent 1.6px),
    radial-gradient(circle at 150px 130px, rgba(238,240,246,.45) 0 .8px, transparent 1.4px),
    radial-gradient(circle at 90px 260px, rgba(233,200,162,.7) 0 1.1px, transparent 1.8px),
    radial-gradient(circle at 300px 70px, rgba(142,162,216,.7) 0 .9px, transparent 1.5px),
    radial-gradient(circle at 210px 410px, rgba(238,240,246,.35) 0 .8px, transparent 1.4px),
    radial-gradient(circle at 430px 190px, rgba(238,240,246,.6) 0 1.2px, transparent 2px);
  background-size: 240px 240px, 240px 240px, 380px 380px, 380px 380px, 520px 520px, 520px 520px;
  color: var(--c-star);
  font-family: var(--font-jp);
  font-size: 1rem;
  line-height: 1.9;
  letter-spacing: .04em;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, p, dl, dd, ol, ul, figure, address { margin: 0; }
ol, ul { padding: 0; list-style: none; }
address { font-style: normal; }
button, input, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--c-dawn); outline-offset: 3px; border-radius: 2px; }
.section--light :focus-visible { outline-color: var(--c-ink); }

.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;
}
.skip-link {
  position: fixed; left: 12px; top: -100px; z-index: 300;
  background: var(--c-star); color: var(--c-ink); padding: .6em 1em; border-radius: 4px; text-decoration: none;
}
.skip-link:focus { top: 12px; }

/* ヘッダー状態切替の目印（ページ最上部120px） */
.header-sentinel { position: absolute; top: 0; left: 0; width: 1px; height: 120px; pointer-events: none; }

.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.sp-only { display: none; }
@media (max-width: 599px) {
  .sp-only { display: inline; }
  .pc-only { display: none; }
}

/* ---------- Section heading system ---------- */
.sec-label {
  display: flex; align-items: center; gap: .9em;
  font-family: var(--font-en); font-size: .75rem; font-weight: 400;
  letter-spacing: .32em; text-transform: uppercase; color: var(--c-dawn);
}
.sec-label::before { content: ""; width: 28px; height: 1px; background: currentColor; opacity: .6; }
.sec-label__num { color: var(--c-star-3); letter-spacing: .1em; }
.section--light .sec-label { color: var(--c-accent-ink); }
.section--light .sec-label__num { color: var(--c-ink-3); }

.sec-title {
  margin-top: 1.1em;
  font-family: var(--font-mincho); font-weight: 500;
  font-size: clamp(1.7rem, 1.12rem + 2.33vw, 3rem);
  line-height: 1.6; letter-spacing: .06em;
}

.section { position: relative; padding-block: clamp(96px, 13vw, 184px); }
.section--light { background: var(--c-paper); color: var(--c-ink); }

/* ---------- Reveal（opacity / transform のみ・一度きり） ---------- */
.js [data-reveal] {
  opacity: 0; transform: translateY(24px);
  transition: opacity 1.1s var(--ease-out), transform 1.1s var(--ease-out);
  transition-delay: var(--d, 0s);
}
.js [data-reveal].is-visible { opacity: 1; transform: none; }

/* =========================================================
   Header
   ========================================================= */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 100; height: var(--header-h);
  border-bottom: 1px solid transparent;
  transition: background-color .4s, border-color .4s;
}
/* 旧：backdrop-filter: blur(14px) → 不透明度の高い背景色で代替 */
.site-header.is-scrolled {
  background: rgba(7, 10, 20, .9);
  border-bottom-color: var(--c-line-dark);
}
.site-header__inner {
  height: 100%; display: flex; align-items: center; justify-content: space-between;
  max-width: calc(1440px + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter);
}
.brand {
  font-family: var(--font-en); font-weight: 400; font-size: 1.25rem; letter-spacing: .22em;
  text-decoration: none; color: var(--c-star); line-height: 1;
}
.gnav ul { display: flex; align-items: center; gap: clamp(20px, 2.4vw, 40px); }
.gnav a {
  position: relative; display: inline-block; padding: .4em 0;
  font-family: var(--font-en); font-size: .8125rem; letter-spacing: .18em;
  color: var(--c-star-2); text-decoration: none; transition: color .3s;
}
.gnav a:not(.gnav__cta)::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: var(--c-dawn); transform: scaleX(0); transform-origin: right; transition: transform .5s var(--ease-out);
}
.gnav a:hover { color: var(--c-star); }
.gnav a:hover::after { transform: scaleX(1); transform-origin: left; }
.gnav .gnav__cta {
  padding: .55em 1.4em; border: 1px solid rgba(233,200,162,.5); border-radius: 999px; color: var(--c-dawn);
  transition: background-color .3s, color .3s;
}
.gnav .gnav__cta:hover { background: var(--c-dawn); color: var(--c-night-900); }

.menu-toggle {
  display: none; position: relative; z-index: 2;
  align-items: center; gap: 12px; padding: 10px 0 10px 12px;
  background: none; border: 0; cursor: pointer; color: var(--c-star);
}
.menu-toggle__label { font-family: var(--font-en); font-size: .75rem; letter-spacing: .2em; }
.menu-toggle__lines { position: relative; width: 26px; height: 9px; }
.menu-toggle__lines::before, .menu-toggle__lines::after {
  content: ""; position: absolute; left: 0; top: 0; width: 100%; height: 1px; background: currentColor;
  transition: transform .4s var(--ease-out);
}
.menu-toggle__lines::after { transform: translateY(8px); }
.menu-toggle[aria-expanded="true"] .menu-toggle__lines::before { transform: translateY(4px) rotate(20deg); }
.menu-toggle[aria-expanded="true"] .menu-toggle__lines::after { transform: translateY(4px) rotate(-20deg); }

@media (max-width: 959px) {
  .gnav { display: none; }
  .menu-toggle { display: inline-flex; }
}

/* Mobile menu */
.mobile-menu {
  position: fixed; inset: 0; z-index: 90; overflow-y: auto;
  display: flex; flex-direction: column; justify-content: space-between; gap: 40px;
  padding: calc(var(--header-h) + 32px) var(--gutter) 40px;
  background: rgba(5, 7, 15, .97);
  opacity: 0; transition: opacity .4s ease;
}
.mobile-menu[hidden] { display: none; }
.mobile-menu::before {
  content: ""; position: absolute; width: 140vw; aspect-ratio: 1; right: -70vw; top: 10%;
  border: 1px solid var(--c-line-dark); border-radius: 50%; pointer-events: none;
}
.mobile-menu.is-open { opacity: 1; }
.mobile-menu__list li { opacity: 0; transform: translateY(12px); transition: opacity .5s, transform .6s var(--ease-out); }
.mobile-menu.is-open .mobile-menu__list li { opacity: 1; transform: none; }
.mobile-menu.is-open .mobile-menu__list li:nth-child(2) { transition-delay: .04s; }
.mobile-menu.is-open .mobile-menu__list li:nth-child(3) { transition-delay: .08s; }
.mobile-menu.is-open .mobile-menu__list li:nth-child(4) { transition-delay: .12s; }
.mobile-menu.is-open .mobile-menu__list li:nth-child(5) { transition-delay: .16s; }
.mobile-menu.is-open .mobile-menu__list li:nth-child(6) { transition-delay: .2s; }
.mobile-menu__list a {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
  padding: 18px 0; border-bottom: 1px solid var(--c-line-dark); text-decoration: none;
}
.mobile-menu__list .en { font-family: var(--font-en); font-weight: 300; font-size: 1.6rem; letter-spacing: .08em; }
.mobile-menu__list .ja { font-size: .75rem; color: var(--c-star-3); }
.mobile-menu__foot { display: flex; flex-direction: column; gap: 10px; font-family: var(--font-en); font-size: .875rem; color: var(--c-star-2); letter-spacing: .08em; }
.mobile-menu__foot a { text-decoration: none; }
body.menu-open { overflow: hidden; }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: 100vh; min-height: 100svh;
  display: grid; align-items: end;
  background: #000; color: var(--c-star);
}
/* SPでは小さいviewportをHeroのレイアウト基準に固定する。URLバー収納で
   visual viewportだけが広がっても、Heroと次セクションのレイアウト高は変えない。 */
@media (max-width: 767px) {
  .hero { height: 100svh; min-height: 100svh; }
}
/* svh非対応の旧ブラウザだけは、従来のvhへ安全にフォールバックする。 */
@supports not (height: 100svh) {
  @media (max-width: 767px) {
    .hero { height: 100vh; min-height: 100vh; }
  }
}
/* 旧：パララックス用に inset:-6% / will-change → 削除 */
.hero__media { position: absolute; inset: 0; z-index: -3; }
.hero__media picture, .hero__media img { width: 100%; height: 100%; }
.hero__media img { object-fit: cover; object-position: var(--hero-img-pos); }

.hero__scrim {
  position: absolute; inset: 0; z-index: -2; pointer-events: none;
  background:
    linear-gradient(180deg, rgba(5,7,15,.65) 0%, rgba(5,7,15,0) 20%),
    linear-gradient(90deg, rgba(5,7,15,.82) 0%, rgba(5,7,15,.42) 40%, rgba(5,7,15,0) 68%),
    linear-gradient(0deg, var(--c-night-900) 0%, rgba(7,10,20,0) 28%);
}
@media (max-width: 767px) {
  .hero__scrim {
    background:
      linear-gradient(180deg, rgba(5,7,15,.6) 0%, rgba(5,7,15,0) 18%),
      linear-gradient(0deg, var(--c-night-900) 0%, rgba(7,10,20,.88) 30%, rgba(7,10,20,.35) 55%, rgba(7,10,20,0) 72%);
  }
}

/* --- 軌道（静的SVG＋transformだけで動く光） --- */
.hero__orbits {
  position: absolute; z-index: -1; pointer-events: none;
  left: var(--hero-focus-x); top: var(--hero-focus-y);
  width: min(96vw, 1440px); aspect-ratio: 1280 / 800;
  transform: translate(-50%, -50%);
}
.hero__orbits svg { width: 100%; height: 100%; max-width: none; overflow: visible; }
@media (max-width: 767px) { .hero__orbits { width: 190vw; } }
.hero[data-orbits="off"] .hero__orbits { display: none; }
.hero__core { opacity: .9; }
.orbit-line { fill: none; stroke: rgba(196,210,245,.22); stroke-width: 1; vector-effect: non-scaling-stroke; }
.orbit-line--faint { stroke: rgba(196,210,245,.12); }
.orbit-trail { fill: none; stroke-linecap: round; }
.orbit-trail--wide { stroke: rgba(243,220,192,.28); stroke-width: 2; stroke-dasharray: 130 870; }
.orbit-trail--head { stroke: #fff4e4; stroke-width: 2.4; stroke-dasharray: 10 990; }
.orbit-fallback { display: none; }

/*
  動く光：円形リングを rotate で回し、親要素で scaleY して楕円軌道に重ねる。
  rotate はGPU合成のみで処理され、再描画が発生しない。
  サイズ・比率はSVG側の楕円（rx / ry / 傾き）に対応。
*/
.hero__comet {
  position: absolute; left: 50%; top: 50%; aspect-ratio: 1;
  transform: translate(-50%, -50%) rotate(var(--tilt)) scaleY(var(--squash));
}
.hero__comet::before {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  background: conic-gradient(from 0deg,
    rgba(243,220,192,0) 0deg 290deg,
    rgba(243,220,192,.3) 345deg,
    #fff4e4 358deg,
    rgba(255,244,228,0) 360deg);
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 3.5px), #000 calc(100% - 2.5px), #000 calc(100% - 1px), transparent 100%);
          mask: radial-gradient(farthest-side, transparent calc(100% - 3.5px), #000 calc(100% - 2.5px), #000 calc(100% - 1px), transparent 100%);
  animation: comet var(--dur) linear infinite;
  animation-delay: var(--delay, 0s);
}
.hero__comet--1 { width: 90.625%;  --tilt: -14deg; --squash: .338; --dur: 26s; }   /* rx580 ry196 */
.hero__comet--2 { width: 45.3125%; --tilt: -36deg; --squash: .3586; --dur: 19s; --delay: -6s; } /* rx290 ry104 */
.hero__comet--3 { width: 68.75%;   --tilt: 16deg;  --squash: .2909; --dur: 22.5s; --delay: -14s; } /* rx440 ry128 */
@keyframes comet { to { transform: rotate(360deg); } }
/* FVが画面外のときは停止 */
.hero.is-offscreen .hero__comet::before { animation-play-state: paused; }

/*
  SP：PCと同じ .hero__comet ×3 を表示（transform回転のみ）。
  SPでは軌道全体が190vwと画面に対して大きく、PCと同じ速度だと速く見えるため、
  周期を約1.15倍に延ばす（delayも同じ比率にして、3つの開始位置はPCとほぼ同じにする）。
  静的fallbackは通常時は非表示（.orbit-fallback の既定値 display:none のまま）。
*/
@media (max-width: 767px) {
  .hero__comet { opacity: .9; }
  .hero__comet--1 { --dur: 30s; }
  .hero__comet--2 { --dur: 22s; --delay: -7s; }
  .hero__comet--3 { --dur: 26s; --delay: -16s; }
}

.hero__inner { padding-top: calc(var(--header-h) + 40px); padding-bottom: clamp(96px, 15vh, 168px); }
.hero__eyebrow {
  font-family: var(--font-en); font-size: .75rem; letter-spacing: .4em; text-transform: uppercase; color: var(--c-dawn);
}
.hero__title {
  margin-top: .9em;
  font-family: var(--font-mincho); font-weight: 500;
  font-size: clamp(1.9rem, .9rem + 3vw, 3.75rem);
  line-height: 1.62; letter-spacing: .08em;
  text-shadow: 0 2px 30px rgba(5,7,15,.55);
}
.hero__title .line { display: block; }
.hero__title .ph { display: inline-block; }
.hero__lead { margin-top: 2em; max-width: 34em; font-size: clamp(.875rem, .82rem + .2vw, 1rem); line-height: 2.1; color: var(--c-star-2); }

@media (max-width: 599px) {
  .hero__title { font-size: min(8.8vw, 2.3rem); line-height: 1.58; letter-spacing: .06em; }
  .hero__title .ph { display: block; }
  .hero__inner { padding-bottom: 104px; }
  /* Hero直後の表示開始時だけは縦移動をさせず、スクロールとの視覚的な段差を防ぐ。 */
  .js .philosophy [data-reveal] { transform: none; }
}

/* Hero intro motion（旧：filter: blur のトランジション → opacity / transform のみ） */
.js .hero__media { opacity: 0; transition: opacity 1.5s ease; }
.js .hero__eyebrow, .js .hero__lead { opacity: 0; transform: translateY(12px); transition: opacity 1.2s var(--ease-out), transform 1.2s var(--ease-out); }
.js .hero__lead { transition-delay: 1.15s; }
.js .hero__title .ph {
  opacity: 0; transform: translateY(.45em);
  transition: opacity 1.4s var(--ease-out), transform 1.4s var(--ease-out);
  transition-delay: calc(.3s + var(--i) * .18s);
}
.js .hero__orbits { opacity: 0; transition: opacity 2.4s ease .2s; }
.is-loaded .hero__media, .is-loaded .hero__eyebrow, .is-loaded .hero__lead, .is-loaded .hero__title .ph { opacity: 1; transform: none; }
.is-loaded .hero__orbits { opacity: 1; }

.hero__scroll {
  position: absolute; right: var(--gutter); bottom: clamp(28px, 5vh, 48px);
  display: flex; flex-direction: column; align-items: center; gap: 14px;
  font-family: var(--font-en); font-size: .625rem; letter-spacing: .3em; text-transform: uppercase;
  color: var(--c-star-2); text-decoration: none; writing-mode: vertical-rl;
}
.hero__scroll-line { position: relative; width: 1px; height: 64px; background: rgba(238,240,246,.22); overflow: hidden; }
/* 旧：top をアニメーション → transform に変更 */
.hero__scroll-line::after {
  content: ""; position: absolute; left: 0; top: 0; width: 1px; height: 30%;
  background: var(--c-dawn); transform: translateY(-100%);
  animation: scrollLine 2.6s var(--ease-out) infinite;
}
@keyframes scrollLine { to { transform: translateY(340%); } }
.hero.is-offscreen .hero__scroll-line::after { animation-play-state: paused; }
@media (max-width: 767px) { .hero__scroll { bottom: 32px; } }
.hero__placeholder {
  position: absolute; top: calc(var(--header-h) + 16px); right: var(--gutter);
  font-family: var(--font-en); font-size: .625rem; letter-spacing: .2em; text-transform: uppercase;
  color: var(--c-star-3); border: 1px dashed rgba(185,192,212,.35); padding: .35em .8em; border-radius: 2px;
}

/* =========================================================
   01 PHILOSOPHY
   ========================================================= */
.philosophy { background: radial-gradient(60% 50% at 85% 10%, rgba(62,79,143,.18), transparent 70%); overflow: hidden; }
.philosophy__body p { color: var(--c-star-2); font-size: clamp(.95rem, .9rem + .2vw, 1.0625rem); line-height: 2.2; }
.philosophy__body p + p { margin-top: 1.4em; }
.philosophy__body { margin-top: 40px; }
@media (min-width: 960px) {
  .philosophy__top { display: grid; grid-template-columns: 5fr 6fr; gap: 64px; align-items: end; }
  .philosophy__body { margin-top: 0; padding-bottom: .6em; }
}

.commitments {
  margin-top: clamp(108px, 12vw, 168px);
  /* 本文全体の星空は維持しつつ、縦ライン／本文と重なる反復パターンだけを
     この領域で静かな非反復の星に置き換える。 */
  background-color: var(--c-night-900);
  background-image:
    radial-gradient(circle at 86% 8%, rgba(238,240,246,.48) 0 .85px, transparent 1.5px),
    radial-gradient(circle at 72% 34%, rgba(142,162,216,.36) 0 .7px, transparent 1.35px),
    radial-gradient(circle at 91% 62%, rgba(233,200,162,.48) 0 .95px, transparent 1.65px),
    radial-gradient(circle at 58% 88%, rgba(238,240,246,.28) 0 .7px, transparent 1.3px);
  background-size: 100% 100%;
}
.commitments__label { font-family: var(--font-en); font-size: .75rem; letter-spacing: .28em; text-transform: uppercase; color: var(--c-star-3); }
.commitments__label span { margin-left: 1em; font-family: var(--font-jp); letter-spacing: .12em; text-transform: none; }
.commitments__track { position: relative; margin-top: 40px; }
.commitments__arc { display: none; }

.commitment { position: relative; }
.commitment__node {
  position: absolute; width: 13px; height: 13px; border-radius: 50%;
  border: 1px solid var(--c-dawn); background: var(--c-night-900);
  box-shadow: 0 0 0 6px rgba(233,200,162,.07), 0 0 22px rgba(233,200,162,.45);
}
.commitment__node::after { content: ""; position: absolute; inset: 3px; border-radius: 50%; background: var(--c-dawn-strong); }
.commitment__num { font-family: var(--font-en); font-size: .72rem; letter-spacing: .26em; text-transform: uppercase; color: var(--c-dawn); }
.commitment__title { margin: .8em 0 .9em; font-family: var(--font-mincho); font-weight: 500; font-size: clamp(1.2rem, 1.05rem + .5vw, 1.4rem); line-height: 1.6; letter-spacing: .05em; }
.commitment__text { font-size: .9rem; line-height: 2.05; color: var(--c-star-2); }

/* SP/TB：縦の軌道 */
@media (max-width: 959px) {
  .commitments__list { position: relative; }
  .commitments__list::before {
    content: ""; position: absolute; left: 6px; top: 10px; bottom: 10px; width: 1px;
    background: linear-gradient(180deg, rgba(233,200,162,.5), rgba(233,200,162,.08));
  }
  .commitment { padding-left: 40px; }
  .commitment + .commitment { margin-top: 52px; }
  .commitment__node { left: 0; top: 6px; }
}
/* PC：弧状の軌道上に4点 */
@media (min-width: 960px) {
  .commitments__arc {
    display: block; position: absolute; left: -10%; width: 120%; top: 30px; height: 240px;
    border: 1px solid rgba(233,200,162,.32); border-radius: 50%;
    clip-path: inset(0 0 50% 0); pointer-events: none;
  }
  /* 旧：clip-path アニメーション → opacity のみ */
  .js .commitments__arc[data-reveal] { transform: none; transition: opacity 1.6s var(--ease-out); }
  .commitments__list { display: grid; grid-template-columns: repeat(4, 1fr); }
  .commitment { --y: 56px; padding: calc(var(--y) + 44px) clamp(14px, 1.6vw, 28px) 0; text-align: center; }
  .commitment:nth-child(2), .commitment:nth-child(3) { --y: 33px; }
  .commitment__node { left: 50%; top: var(--y); transform: translate(-50%, -50%); }
  .commitment__text { max-width: 16.5em; margin-inline: auto; text-align: left; }
}

/* =========================================================
   02 ABOUT THE NAME
   ========================================================= */
.name { overflow: hidden; }
.name__visual { position: relative; margin: clamp(40px, 6vw, 72px) 0 clamp(64px, 9vw, 120px); }
.name__word {
  font-family: var(--font-en); font-weight: 300; text-align: center;
  font-size: clamp(4.25rem, 18vw, 15.5rem); line-height: 1; letter-spacing: .02em;
  background: linear-gradient(180deg, rgba(238,240,246,.92) 10%, rgba(238,240,246,.1) 95%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.name__orbit { position: absolute; left: -6%; top: -30%; width: 112%; height: 160%; max-width: none; overflow: visible; pointer-events: none; }
.name__orbit-line { fill: none; stroke: rgba(233,200,162,.35); stroke-width: 1; vector-effect: non-scaling-stroke; }
.name__orbit-dot { fill: #fff4e4; }

.name__grid { display: grid; gap: 40px; }
@media (min-width: 960px) { .name__grid { grid-template-columns: 5fr 6fr; gap: 64px; } }
.name__body p { color: var(--c-star-2); line-height: 2.2; }
.name__body p + p { margin-top: 1.3em; }
.etymology {
  display: flex; align-items: baseline; flex-wrap: wrap; gap: .4em 1.2em;
  padding-bottom: 24px; margin-bottom: 28px; border-bottom: 1px solid var(--c-line-dark);
}
.etymology dt { font-family: var(--font-mincho); font-style: italic; font-size: 1.8rem; letter-spacing: .04em; color: var(--c-star); }
.etymology dd { color: var(--c-star-2); }
.etymology__lang { margin-right: .8em; font-size: .72rem; letter-spacing: .14em; color: var(--c-dawn); }

/* =========================================================
   03 BUSINESS
   ========================================================= */
.business { background: linear-gradient(180deg, transparent, rgba(20,27,51,.5) 50%, transparent); }
.business__layout { display: grid; gap: 56px; }
.business__intro { margin-top: 28px; color: var(--c-star-2); line-height: 2.1; }
.business__note { margin-top: 16px; font-size: .8125rem; color: var(--c-star-3); }
.bdiagram { display: none; }

@media (min-width: 960px) {
  .business__layout { grid-template-columns: 5fr 6fr; gap: 72px; align-items: start; }
  .business__sticky { position: sticky; top: calc(var(--header-h) + 40px); }
  .bdiagram { display: block; width: min(100%, 340px); margin-top: 56px; overflow: visible; }
}
.bd__ring { fill: none; stroke: rgba(196,210,245,.2); stroke-width: 1; }
.bd__ring--dash { stroke-dasharray: 2 6; }
.bd__core { fill: #fff4e4; }
.bd__core-label, .bd__num { font-family: var(--font-en); font-size: 11px; letter-spacing: .24em; fill: var(--c-star-3); }
.bd__dot { fill: var(--c-night-900); stroke: var(--c-orbit); stroke-width: 1; transition: fill .5s, stroke .5s; }
.bd__halo { fill: rgba(233,200,162,0); transition: fill .5s; }
.bd__node.is-active .bd__dot { fill: var(--c-dawn-strong); stroke: var(--c-dawn); }
.bd__node.is-active .bd__halo { fill: rgba(233,200,162,.16); }
.bd__node.is-active .bd__num { fill: var(--c-dawn); }

.bitem {
  display: grid; grid-template-columns: auto 1fr; gap: 0 clamp(20px, 3vw, 40px);
  padding: clamp(32px, 4vw, 48px) 0; border-top: 1px solid var(--c-line-dark);
}
.bitem:last-child { border-bottom: 1px solid var(--c-line-dark); }
.bitem__num { font-family: var(--font-en); font-weight: 300; font-size: clamp(1.6rem, 1.2rem + 1.4vw, 2.4rem); line-height: 1; color: var(--c-star-3); transition: color .5s; }
.bitem.is-active .bitem__num { color: var(--c-dawn); }
.bitem__en { font-family: var(--font-en); font-size: .72rem; letter-spacing: .26em; text-transform: uppercase; color: var(--c-dawn); }
.bitem__title { margin: .6em 0 .9em; font-family: var(--font-mincho); font-weight: 500; font-size: clamp(1.2rem, 1.05rem + .6vw, 1.5rem); line-height: 1.6; }
.bitem__text { font-size: .9375rem; line-height: 2.05; color: var(--c-star-2); }
.bitem__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.bitem__tags li {
  padding: .35em 1em; font-size: .78rem; line-height: 1.6; color: var(--c-star-2);
  border: 1px solid var(--c-line-dark); border-radius: 999px;
}

/* =========================================================
   04 VISION
   ========================================================= */
.vision { overflow: hidden; }
.vision__layout { display: grid; gap: 56px; align-items: center; }
@media (min-width: 960px) { .vision__layout { grid-template-columns: 5fr 6fr; gap: 64px; } }
.vision__text p:not(.sec-label) { margin-top: 1.3em; color: var(--c-star-2); line-height: 2.2; }
.vision__text .sec-title + p { margin-top: 2em; }
.vdiagram { width: 100%; overflow: visible; }
.vd__orbit { fill: none; stroke-width: 1; vector-effect: non-scaling-stroke; }
.vd__orbit--now { stroke: rgba(233,200,162,.6); }
.vd__orbit--future { stroke: rgba(142,162,216,.44); stroke-dasharray: 3 7; }
.vd__orbit--far { stroke: rgba(142,162,216,.27); }
.vd__dot--now { fill: #fff4e4; }
.vd__dot--future { fill: var(--c-night-900); stroke: var(--c-orbit); stroke-width: 1.2; }
.vd__label { font-family: var(--font-en); font-size: 11px; letter-spacing: .3em; fill: var(--c-star-3); }
.vision__legend { display: flex; flex-wrap: wrap; gap: 10px 28px; margin-top: 24px; font-size: .8125rem; color: var(--c-star-2); }
.vision__legend li { display: flex; align-items: center; gap: 10px; }
.lg { width: 22px; height: 0; border-top: 1px solid var(--c-dawn); }
.lg--future { border-top: 1px dashed var(--c-orbit); }

/* ---------- Dawn transition ---------- */
.dawn {
  position: relative; height: clamp(220px, 32vw, 420px); overflow: hidden;
  background: linear-gradient(180deg, rgba(7,10,20,0) 0%, rgba(62,79,143,.35) 35%, rgba(233,200,162,.55) 72%, var(--c-paper) 100%);
}
.dawn__text {
  position: absolute; left: 50%; bottom: 22%; transform: translateX(-50%);
  font-family: var(--font-en); font-weight: 300; font-size: .75rem; letter-spacing: .5em; text-transform: uppercase;
  color: rgba(20,26,44,.55); white-space: nowrap;
}

/* =========================================================
   05 COMPANY / 06 CONTACT（Light）
   ========================================================= */
.company { padding-top: clamp(48px, 6vw, 88px); }
.company__layout, .contact__layout { display: grid; gap: 40px; }
@media (min-width: 960px) {
  .company__layout { grid-template-columns: 4fr 7fr; gap: 64px; }
  .contact__layout { grid-template-columns: 5fr 6fr; gap: 72px; align-items: start; }
}
.company__table { border-top: 1px solid var(--c-line-light); }
.company__row { display: grid; grid-template-columns: 8.5em 1fr; gap: 16px; padding: 24px 0; border-bottom: 1px solid var(--c-line-light); }
.company__row dt { font-size: .8125rem; font-weight: 500; letter-spacing: .12em; color: var(--c-ink-3); padding-top: .2em; }
.company__row dd { line-height: 1.95; }
.company__biz li { position: relative; padding-left: 1.2em; }
.company__biz li + li { margin-top: .5em; }
.company__biz li::before { content: ""; position: absolute; left: 0; top: .85em; width: 5px; height: 5px; border-radius: 50%; border: 1px solid var(--c-accent-ink); }
@media (max-width: 599px) {
  .company__row { grid-template-columns: 1fr; gap: 6px; padding: 20px 0; }
}
.text-link { display: inline-block; margin-top: .3em; color: var(--c-accent-ink); text-underline-offset: .3em; text-decoration-thickness: 1px; }
.company__row dd .text-link { display: block; font-size: .875rem; }

.contact { padding-top: 0; }
.contact__lead { margin-top: 24px; color: var(--c-ink-2); line-height: 2.05; }
.confidentiality {
  position: relative; margin-top: 40px; padding: 28px 28px 28px 32px;
  background: #fff; border: 1px solid var(--c-line-light); border-radius: 4px;
}
.confidentiality::before { content: ""; position: absolute; left: 0; top: 28px; bottom: 28px; width: 2px; background: var(--c-dawn); }
.confidentiality__title { font-family: var(--font-mincho); font-weight: 600; font-size: 1.05rem; letter-spacing: .08em; }
.confidentiality p { margin-top: 12px; font-size: .875rem; line-height: 2; color: var(--c-ink-2); }
.contact__mail { margin-top: 32px; }
.contact__mail-label { font-size: .75rem; color: var(--c-ink-3); letter-spacing: .1em; }
.contact__mail a { font-family: var(--font-en); font-size: 1.15rem; letter-spacing: .06em; color: var(--c-ink); text-underline-offset: .3em; word-break: break-all; }

.form { padding: clamp(28px, 4vw, 48px); background: #fff; border: 1px solid var(--c-line-light); border-radius: 4px; }
.field + .field { margin-top: 26px; }
.field label { display: flex; align-items: center; gap: 10px; font-size: .875rem; font-weight: 500; letter-spacing: .08em; }
.badge { padding: .1em .7em; font-size: .6875rem; line-height: 1.7; letter-spacing: .1em; color: #fff; background: var(--c-ink); border-radius: 2px; }
.badge--optional { color: var(--c-ink-2); background: var(--c-paper-2); }
.field input, .field textarea {
  display: block; width: 100%; margin-top: 10px; padding: 14px 16px;
  font-size: 1rem; /* iOSズーム防止 */ line-height: 1.7;
  color: var(--c-ink); -webkit-text-fill-color: var(--c-ink); background: var(--c-paper); border: 1px solid rgba(20,26,44,.28); border-radius: 3px;
  transition: border-color .3s, background-color .3s;
}
.field textarea { resize: vertical; min-height: 180px; }
.field input:focus, .field textarea:focus { outline: none; background: #fff; border-color: var(--c-ink); }
.field input::placeholder, .field textarea::placeholder { color: var(--c-ink-3); opacity: 1; }
.field input:-webkit-autofill,
.field input:-webkit-autofill:hover,
.field input:-webkit-autofill:focus {
  -webkit-text-fill-color: var(--c-ink);
  -webkit-box-shadow: 0 0 0 1000px var(--c-paper) inset;
  box-shadow: 0 0 0 1000px var(--c-paper) inset;
  border-color: rgba(20,26,44,.28);
}
.field [aria-invalid="true"] { border-color: var(--c-error); background: #fff; }
.field__error { margin-top: 8px; font-size: .8125rem; color: var(--c-error); }
.form__privacy { margin-top: 28px; font-size: .8125rem; color: var(--c-ink-2); }
.form__privacy a { color: var(--c-accent-ink); text-underline-offset: .25em; }
.form__turnstile { min-height: 65px; margin-top: 24px; }
.form__actions { margin-top: 28px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 14px;
  min-width: 240px; padding: 18px 32px; cursor: pointer;
  font-size: .9375rem; letter-spacing: .16em; color: var(--c-paper);
  background: var(--c-ink); border: 0; border-radius: 999px; transition: background-color .3s;
}
.btn:hover { background: #26304d; }
.btn:disabled { opacity: .6; cursor: default; }
.btn__icon { width: 20px; height: 20px; transition: transform .4s var(--ease-out); }
.btn:hover .btn__icon { transform: translateX(4px); }
@media (max-width: 599px) { .btn { width: 100%; } }
.form__status { margin-top: 20px; padding: 16px 18px; font-size: .875rem; line-height: 1.9; background: var(--c-paper); border-radius: 3px; }
.form__status a { color: var(--c-accent-ink); }

/* =========================================================
   Footer
   ========================================================= */
.site-footer { position: relative; overflow: hidden; padding: clamp(44px, 5vw, 64px) 0 24px; background: var(--c-night-950); color: var(--c-star-2); }
.footer__grid { display: grid; gap: 24px; font-size: .875rem; }
@media (min-width: 768px) { .footer__grid { grid-template-columns: 2fr 2fr 1fr; } }
.footer__name { color: var(--c-star); font-weight: 500; margin-bottom: .6em; }
.footer__info a, .footer__links a, .footer__nav a { text-decoration: none; transition: color .3s; }
.footer__info a:hover, .footer__links a:hover, .footer__nav a:hover { color: var(--c-dawn); }
.footer__nav ul { display: grid; grid-template-columns: repeat(2, max-content); gap: 8px 40px; font-family: var(--font-en); letter-spacing: .14em; }
.footer__bottom { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-top: 28px; padding-top: 16px; border-top: 1px solid var(--c-line-dark); font-family: var(--font-en); font-size: .75rem; letter-spacing: .14em; }

/* UA/OSの自動ダーク化でSVGや入力欄の指定色が反転しないようにする。 */
.hero__orbits, .vdiagram, .name__orbit, .brand { forced-color-adjust: none; }
.footer__top { text-decoration: none; }

/* =========================================================
   Privacy page
   ========================================================= */
.page-hero { position: relative; overflow: hidden; padding: calc(var(--header-h) + clamp(64px, 10vw, 120px)) 0 clamp(64px, 8vw, 104px); }
.page-hero__orbit { position: absolute; right: -10%; top: 0; width: min(900px, 120vw); max-width: none; fill: none; stroke: rgba(196,210,245,.18); pointer-events: none; }
.page-hero__title { margin-top: .8em; font-family: var(--font-mincho); font-weight: 500; font-size: clamp(1.75rem, 1.2rem + 2vw, 2.75rem); letter-spacing: .08em; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: .6em; margin-bottom: 40px; font-size: .75rem; color: var(--c-star-3); }
.breadcrumb li + li::before { content: "/"; margin-right: .6em; }
.breadcrumb a { text-decoration: none; }
.policy { max-width: calc(800px + var(--gutter) * 2); }
.policy p, .policy li { line-height: 2.05; color: var(--c-ink-2); }
.policy > p + p { margin-top: 1em; }
.policy h2 {
  display: flex; align-items: baseline; gap: 16px; margin: 64px 0 20px; padding-bottom: 14px;
  font-family: var(--font-mincho); font-weight: 600; font-size: 1.2rem; color: var(--c-ink); border-bottom: 1px solid var(--c-line-light);
}
.policy h2 .num { font-family: var(--font-en); font-size: .8rem; font-weight: 400; color: var(--c-accent-ink); letter-spacing: .1em; }
.policy ul { margin-top: 12px; }
.policy li { position: relative; padding-left: 1.2em; }
.policy li::before { content: ""; position: absolute; left: 0; top: .95em; width: 5px; height: 5px; border-radius: 50%; background: var(--c-accent-ink); }
.policy a { color: var(--c-accent-ink); text-underline-offset: .25em; }
.policy__contact { padding: 24px; background: #fff; border-radius: 4px; line-height: 2; color: var(--c-ink-2); }
.policy__date { margin-top: 56px; text-align: right; font-size: .875rem; }

/* =========================================================
   Reduced motion
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; transition-delay: 0s !important; }
  .js [data-reveal], .js .hero__media, .js .hero__title .ph, .js .hero__eyebrow, .js .hero__lead, .js .hero__orbits { opacity: 1 !important; transform: none !important; }
  .hero__orbits { transform: translate(-50%, -50%) !important; }
  .hero__comet { display: none; }
  .orbit-fallback { display: inline; }
  .hero__scroll-line::after { display: none; }
}