/* =========================================================
   OTL Consulting — Design System
   "Decision in Motion." / A Path Through Complexity.
   ---------------------------------------------------------
   構造: tokens → base → typography → layout → components
        → header/footer → sections → forms → motion → responsive
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
  /* Base */
  --ivory: #F0EDE6;
  --ivory-deep: #E7E3D9;
  --black: #111214;
  --black-soft: #17181B;
  --navy: #0C1424;
  --navy-soft: #101A2E;
  --graphite: #41454D;

  /* Accent */
  --gold: #A98B4F;           /* 線・境界・接続点用 */
  --gold-ink: #7E6531;       /* テキスト用（明背景でコントラスト4.5:1以上） */
  --gold-dim: #A98B4F26;     /* gold at low alpha for fills */
  --silver: #9AA0A8;

  /* Semantic (light section default) */
  --bg: var(--ivory);
  --fg: var(--black);
  --fg-sub: #47483F;
  --line: #1112141f;
  --line-strong: #11121459;

  /* Type */
  --font-en-display: "Cormorant Garamond", "Times New Roman", serif;
  --font-en: "Manrope", "Helvetica Neue", sans-serif;
  --font-ja-mincho: "Shippori Mincho", "Hiragino Mincho ProN", serif;
  --font-ja: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", sans-serif;

  /* Scale */
  --step--1: clamp(0.8125rem, 0.78rem + 0.2vw, 0.875rem);
  --step-0: clamp(0.92rem, 0.88rem + 0.2vw, 1rem);
  --step-1: clamp(1.1rem, 1rem + 0.5vw, 1.35rem);
  --step-2: clamp(1.4rem, 1.2rem + 1vw, 2rem);
  --step-3: clamp(1.9rem, 1.5rem + 2vw, 3rem);
  --step-4: clamp(2.6rem, 1.9rem + 3.4vw, 4.6rem);
  --step-5: clamp(3.4rem, 2.2rem + 6vw, 7.2rem);

  /* Layout */
  --container: 1240px;
  --gutter: clamp(20px, 4vw, 56px);
  --sec-pad: clamp(96px, 12vw, 180px);

  /* Motion */
  --ease-out: cubic-bezier(.19,1,.22,1);
  --ease-io: cubic-bezier(.77,0,.18,1);
  --dur: .9s;
}

/* Simplified Chinese pages: swap CJK font stacks (fonts loaded per-page) */
html[lang="zh-Hans"] {
  --font-ja-mincho: "Noto Serif SC", "Songti SC", serif;
  --font-ja: "Noto Sans SC", "PingFang SC", sans-serif;
}

/* Dark themes: navy / black sections */
[data-theme="navy"], [data-theme="black"] {
  --fg: #EDEAE2;
  --fg-sub: #AFB4BD;
  --gold-ink: #C6A868;       /* 暗背景では明るい金をテキストに使う */
  --line: #EDEAE21c;
  --line-strong: #EDEAE24d;
}
[data-theme="navy"] { --bg: var(--navy); }
[data-theme="black"] { --bg: var(--black); }
[data-theme="ivory-deep"] { --bg: var(--ivory-deep); }

/* ---------- Page transition ---------- */
@keyframes pageIn { from { opacity: 0; } to { opacity: 1; } }
body { animation: pageIn .22s ease-out; }
body.is-leaving { opacity: 0; transition: opacity .12s ease-out; }

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; color-scheme: light; }
body {
  margin: 0;
  background: var(--ivory);
  color: var(--black);
  font-family: var(--font-ja);
  font-size: var(--step-0);
  line-height: 2;
  letter-spacing: .04em;
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
}
img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
a, button, input, select, textarea, .choice { touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
::placeholder { color: #767770; opacity: 1; }
h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }
/* 日本語: 文節単位の改行（対応ブラウザ）+ 禁則強化 */
html[lang="ja"] h1, html[lang="ja"] h2, html[lang="ja"] h3,
html[lang="ja"] .h-display, html[lang="ja"] .lead,
html[lang="ja"] .hero-sub, html[lang="ja"] .page-hero-ja,
html[lang="ja"] .value-ja, html[lang="ja"] .case-title {
  word-break: auto-phrase;
  line-break: strict;
}
html[lang="zh-Hans"] h1, html[lang="zh-Hans"] h2, html[lang="zh-Hans"] h3 {
  line-break: strict;
}
.nw { white-space: nowrap; }
h1,h2,h3,h4,p,figure,ul,ol,dl,dd { margin: 0; }
ul,ol { padding: 0; list-style: none; }
::selection { background: var(--gold); color: #fff; }

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.skip-link {
  position: fixed; top: -100px; left: 16px; z-index: 300;
  background: var(--black); color: var(--ivory);
  padding: 10px 20px; font-size: var(--step--1);
  transition: top .3s var(--ease-out);
}
.skip-link:focus { top: 16px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}

/* ---------- Typography ---------- */
.en { font-family: var(--font-en); }
.en-display {
  font-family: var(--font-en-display);
  font-weight: 500;
  letter-spacing: .01em;
  line-height: 1.08;
}
.ja-mincho { font-family: var(--font-ja-mincho); font-weight: 500; }

.eyebrow {
  display: flex; align-items: center; gap: 14px;
  font-family: var(--font-en);
  font-size: 11px; font-weight: 600;
  letter-spacing: .34em; text-transform: uppercase;
  color: var(--fg-sub);
  margin-bottom: clamp(24px, 3.5vw, 44px);
}
.eyebrow::before {
  content: ""; width: 8px; height: 8px; flex: none;
  border: 1px solid var(--gold);
  transform: rotate(45deg);
}
.eyebrow .idx { color: var(--gold-ink); letter-spacing: .2em; }

.h-display {
  font-family: var(--font-ja-mincho);
  font-size: var(--step-3);
  font-weight: 500;
  line-height: 1.75;
  letter-spacing: .08em;
}
.h-display-en {
  font-family: var(--font-en-display);
  font-size: var(--step-4);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: .01em;
}
.h-sec-en {
  font-family: var(--font-en-display);
  font-size: var(--step-4);
  font-weight: 500;
  line-height: 1.02;
}
.h-sub {
  font-family: var(--font-ja);
  font-size: var(--step-1);
  font-weight: 500;
  line-height: 1.9;
  letter-spacing: .06em;
}
.lead {
  font-size: var(--step-1);
  line-height: 2.2;
  letter-spacing: .05em;
}
.body-text { color: var(--fg); }
.sub-text { color: var(--fg-sub); font-size: var(--step--1); line-height: 2; }

.stat-num {
  font-family: var(--font-en-display);
  font-size: clamp(3rem, 2rem + 5vw, 6.5rem);
  font-weight: 400;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--line-strong);
}

/* ---------- Layout ---------- */
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--narrow { max-width: 880px; }
.container--wide { max-width: 1440px; }

.sec {
  position: relative;
  background: var(--bg);
  color: var(--fg);
  padding-block: var(--sec-pad);
  overflow: clip;
}
.sec--flush-top { padding-top: 0; }
.sec--hairline-top::before {
  content: ""; position: absolute; top: 0; left: var(--gutter); right: var(--gutter);
  height: 1px; background: var(--line);
}

.grid-2 {
  display: grid; gap: clamp(32px, 6vw, 96px);
  grid-template-columns: minmax(0,5fr) minmax(0,7fr);
  align-items: start;
}
.grid-3 { display: grid; gap: 1px; grid-template-columns: repeat(3, 1fr); }
.grid-sticky-label { position: sticky; top: 120px; }

.rule { border: 0; border-top: 1px solid var(--line); margin: 0; }

/* ---------- Buttons / Links ---------- */
.btn {
  --btn-fg: var(--fg);
  position: relative;
  display: inline-flex; align-items: center; gap: 18px;
  padding: 18px 34px;
  border: 1px solid var(--line-strong);
  font-family: var(--font-en);
  font-size: 12px; font-weight: 600;
  letter-spacing: .28em; text-transform: uppercase;
  color: var(--btn-fg);
  background: transparent;
  cursor: pointer;
  overflow: hidden;
  transition: color .5s var(--ease-out), border-color .5s var(--ease-out);
}
.btn::before {
  content: ""; position: absolute; inset: 0;
  background: currentColor;
  transform: scaleX(0); transform-origin: left;
  transition: transform .55s var(--ease-io);
  z-index: 0;
}
.btn > * { position: relative; z-index: 1; }
.btn .arrow {
  width: 26px; height: 8px; flex: none;
  transition: transform .45s var(--ease-out);
}
.btn .arrow path { stroke: currentColor; fill: none; stroke-width: 1.2; }
.btn:hover::before, .btn:focus-visible::before { transform: scaleX(1); }
.btn:hover, .btn:focus-visible { color: var(--bg); border-color: var(--fg); }
.btn:hover > *, .btn:focus-visible > * { mix-blend-mode: normal; }
.btn:hover .arrow { transform: translateX(6px); }
/* text stays readable over fill: swap via blend */
.btn span, .btn svg { transition: filter .3s; }
.btn:hover span, .btn:hover svg,
.btn:focus-visible span, .btn:focus-visible svg { color: var(--bg); }

.btn--gold { border-color: var(--gold); --btn-fg: var(--gold-ink); }
.btn--gold:hover, .btn--gold:focus-visible { border-color: var(--gold); }

.link-line {
  position: relative;
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-en);
  font-size: 12px; font-weight: 600;
  letter-spacing: .3em; text-transform: uppercase;
  padding-bottom: 8px;
}
.link-line::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px; background: var(--fg);
  transform-origin: right; transition: transform .5s var(--ease-io);
}
.link-line:hover::after { transform: scaleX(.4); transform-origin: left; }
.link-line .arrow { width: 26px; height: 8px; }
.link-line .arrow path { stroke: currentColor; fill: none; stroke-width: 1.2; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 200;
  transition: background .5s, backdrop-filter .5s, box-shadow .5s;
  color: var(--black);
}
.site-header.is-dark { color: #EDEAE2; }
.site-header.is-scrolled {
  background: color-mix(in srgb, var(--ivory) 82%, transparent);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
}
.site-header.is-dark.is-scrolled {
  background: color-mix(in srgb, var(--navy) 76%, transparent);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px clamp(20px, 3.4vw, 48px);
}
.brand { display: block; line-height: 0; }
.brand-logo { height: 44px; width: auto; }
.brand-logo--white { display: none; }
.site-header.is-dark .brand-logo--black { display: none; }
.site-header.is-dark .brand-logo--white { display: block; }
.gnav { display: flex; align-items: center; gap: clamp(18px, 2.2vw, 34px); }
.gnav .gnav-links { display: flex; gap: clamp(18px, 2.2vw, 30px); align-items: center; }
.nav-sub { position: relative; }
.nav-sub-panel {
  position: absolute; top: 100%; left: 50%;
  transform: translate(-50%, 6px);
  min-width: 220px;
  display: grid; gap: 2px;
  padding: 18px 22px 20px;
  background: color-mix(in srgb, var(--ivory) 92%, transparent);
  -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
  border: 1px solid #11121418;
  border-top: 2px solid var(--gold);
  opacity: 0; visibility: hidden; translate: 0 -4px;
  transition: opacity .35s var(--ease-out), translate .35s var(--ease-out), visibility 0s .35s;
}
.nav-sub:hover .nav-sub-panel,
.nav-sub.is-open .nav-sub-panel,
.nav-sub:focus-within .nav-sub-panel {
  opacity: 1; visibility: visible; translate: 0 0;
  transition: opacity .35s var(--ease-out), translate .35s var(--ease-out);
}
.nav-sub-panel a { color: var(--black); padding: 7px 0; white-space: nowrap; }
.site-header.is-dark .nav-sub-panel {
  background: color-mix(in srgb, var(--navy) 88%, transparent);
  border-color: #EDEAE224;
}
.site-header.is-dark .nav-sub-panel a { color: #EDEAE2; }
.gnav a:not(.btn) {
  position: relative;
  font-family: var(--font-en);
  font-size: 11.5px; font-weight: 600;
  letter-spacing: .22em; text-transform: uppercase;
  padding: 6px 0;
}
.gnav a:not(.btn)::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px; background: var(--gold);
  transform: scaleX(0); transform-origin: right;
  transition: transform .45s var(--ease-io);
}
.gnav a:not(.btn):hover::after,
.gnav a:not(.btn)[aria-current="page"]::after {
  transform: scaleX(1); transform-origin: left;
}
.gnav .nav-contact {
  border: 1px solid currentColor;
  padding: 10px 22px;
  font-family: var(--font-en); font-size: 11px; font-weight: 600;
  letter-spacing: .24em; text-transform: uppercase;
  transition: background .4s, color .4s;
}
.site-header:not(.is-dark) .nav-contact:hover { background: var(--black); color: var(--ivory); }
.site-header.is-dark .nav-contact:hover { background: var(--ivory); color: var(--black); }

.lang-switch {
  position: relative;
  font-family: var(--font-en); font-size: 11px; font-weight: 600;
  letter-spacing: .14em;
}
.lang-current {
  all: unset; cursor: pointer;
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 2px; color: currentColor;
}
.lang-current .lang-caret {
  width: 9px; height: 6px;
  transition: transform .35s var(--ease-out);
}
.lang-current .lang-caret path { stroke: currentColor; fill: none; stroke-width: 1.2; }
.lang-switch:hover .lang-caret,
.lang-switch:focus-within .lang-caret { transform: rotate(180deg); }
.lang-current:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.lang-panel {
  left: auto; right: -10px; transform: none;
  min-width: 150px; padding: 14px 20px 16px;
}
.lang-panel a {
  font-size: 11.5px; letter-spacing: .12em;
  padding: 7px 0; display: block;
}
.lang-panel a[aria-current="true"] { color: var(--gold-ink); }
.menu-langs { display: flex; gap: 18px; }
.menu-langs a[aria-current="true"] { color: #C6A868; }
.menu-langs a:hover { color: #EDEAE2; }


/* Localized nav captions */
.gnav-links > a, .gnav-links .nav-sub > a { position: relative; }
.gnav-links a .l10n {
  position: absolute; top: 100%; left: 0; margin-top: 3px;
  font-family: var(--font-ja); font-size: 9px; font-weight: 500;
  letter-spacing: .08em; text-transform: none; color: var(--gold-ink);
  white-space: nowrap; opacity: 0; transform: translateY(-4px);
  transition: opacity .3s var(--ease-out), transform .3s var(--ease-out);
  pointer-events: none;
}
.gnav-links a:hover > .l10n,
.gnav-links a:focus-visible > .l10n { opacity: 1; transform: none; }
.nav-sub-panel a { position: relative; }
.nav-sub-panel a .l10n {
  position: static; display: inline-block; margin-left: 12px;
  font-family: var(--font-ja); font-size: 9px; font-weight: 500;
  letter-spacing: .08em; text-transform: none; color: var(--gold-ink);
  opacity: 0; transform: translateX(-4px);
  transition: opacity .3s var(--ease-out), transform .3s var(--ease-out);
}
.nav-sub-panel a:hover .l10n,
.nav-sub-panel a:focus-visible .l10n { opacity: 1; transform: none; }
.menu-overlay nav a .l10n {
  font-family: var(--font-ja); font-size: clamp(10px, 1.4vh, 12px);
  font-weight: 500; letter-spacing: .12em; color: var(--silver);
  margin-left: 6px; transition: color .3s;
}
.menu-overlay nav a:hover .l10n { color: #C6A868; }
.footer-nav a .l10n { display: none; }

/* Menu close button */
.menu-close {
  all: unset; cursor: pointer;
  position: absolute; top: 20px; right: clamp(16px, 3.4vw, 44px);
  width: 48px; height: 48px; z-index: 2;
  color: #EDEAE2;
}
.menu-close span {
  position: absolute; left: 10px; top: 50%; width: 28px; height: 1.5px;
  background: currentColor; transition: transform .4s var(--ease-io);
}
.menu-close span:nth-child(1) { transform: rotate(45deg); }
.menu-close span:nth-child(2) { transform: rotate(-45deg); }
.menu-close:hover span:nth-child(1) { transform: rotate(135deg); }
.menu-close:hover span:nth-child(2) { transform: rotate(45deg); }
.menu-close:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

/* Hamburger */
.menu-toggle {
  all: unset; cursor: pointer; z-index: 260;
  width: 44px; height: 44px; display: none;
  place-items: center; position: relative;
}
.menu-toggle span {
  position: absolute; left: 8px; width: 28px; height: 1.5px;
  background: currentColor; transition: transform .5s var(--ease-io), opacity .3s;
}
.menu-toggle span:nth-child(1) { transform: translateY(-5px); }
.menu-toggle span:nth-child(2) { transform: translateY(5px); }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { transform: rotate(-45deg); }

/* Fullscreen menu */
.menu-overlay {
  --gold-ink: #C6A868;
  position: fixed; inset: 0; z-index: 240;
  overscroll-behavior: contain;
  background: var(--navy); color: #EDEAE2;
  display: grid; align-content: safe center;
  overflow-y: auto;
  padding: 90px var(--gutter) 48px;
  clip-path: inset(0 0 100% 0);
  visibility: hidden;
  transition: clip-path .7s var(--ease-io), visibility 0s .7s;
}
.menu-overlay.is-open {
  clip-path: inset(0 0 0% 0);
  visibility: visible;
  transition: clip-path .7s var(--ease-io);
}
.menu-overlay nav ul { display: grid; gap: 4px; }
.menu-overlay nav a {
  display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap;
  font-family: var(--font-en-display);
  font-size: clamp(1.35rem, 3.4vh, 2.4rem);
  padding: clamp(2px, 0.6vh, 8px) 0;
  opacity: 0; transform: translateY(24px);
  transition: opacity .6s var(--ease-out), transform .6s var(--ease-out);
}
.menu-overlay.is-open nav a { opacity: 1; transform: none; }
.menu-overlay nav a .num {
  font-family: var(--font-en); font-size: 10px; letter-spacing: .2em;
  color: #C6A868;
}
.menu-overlay .menu-foot {
  margin-top: 48px; display: flex; gap: 24px; flex-wrap: wrap;
  font-family: var(--font-en); font-size: 11px; letter-spacing: .2em;
  text-transform: uppercase; color: var(--silver);
}
.menu-lines {
  position: absolute; inset: 0; pointer-events: none; opacity: .5;
}

/* ---------- Progress bar ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; z-index: 210;
  width: 100%; height: 2px;
  background: transparent; pointer-events: none;
}
.scroll-progress i {
  display: block; height: 100%;
  background: var(--gold);
  transform-origin: left; transform: scaleX(0);
}

/* ---------- Loader ---------- */
.loader {
  position: fixed; inset: 0; z-index: 400;
  background: var(--ivory);
  display: grid; place-items: center;
  transition: opacity .7s var(--ease-out), visibility 0s .8s;
}
.loader.is-done { opacity: 0; visibility: hidden; pointer-events: none; }
.loader canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.loader .loader-mark {
  position: relative;
  font-family: var(--font-en);
  font-size: 10px; letter-spacing: .6em; text-transform: uppercase;
  color: var(--graphite);
  opacity: 0; animation: loaderFade 1.4s .3s forwards;
}
@keyframes loaderFade { to { opacity: 1; } }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid; align-items: center;
  background: var(--ivory); color: var(--black);
  overflow: clip;
}
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-inner {
  position: relative; z-index: 2;
  width: 100%;
  padding: 150px var(--gutter) 120px;
  max-width: var(--container); margin-inline: auto;
}
.hero-ja {
  font-family: var(--font-ja-mincho);
  font-size: clamp(2.5rem, 1.4rem + 6.2vw, 6.4rem);
  font-weight: 500; line-height: 1.42; letter-spacing: .06em;
  margin-bottom: clamp(24px, 3.4vh, 40px);
}
.hero-ja .line { display: block; overflow: hidden; white-space: nowrap; }
.hero-ja--img { margin-bottom: clamp(6px, 1.2vh, 14px); }
.hero-slogan {
  width: min(640px, 84vw); height: auto;
  margin-left: -10px;
}
.hero-ja .line > span { display: inline-block; }
.hero-en {
  font-family: var(--font-en-display);
  font-style: italic;
  font-size: clamp(1.2rem, 1rem + 1.6vw, 2rem);
  font-weight: 500; letter-spacing: .02em;
  color: #33342E;
  display: flex; align-items: center; gap: 22px;
  margin-bottom: clamp(30px, 4.5vh, 52px);
}
.hero-en::after { content: ""; height: 1px; width: 84px; background: var(--gold); }
.hero-sub {
  max-width: 470px;
  color: var(--fg-sub);
  font-size: var(--step--1);
  line-height: 2.3;
  margin-bottom: clamp(36px, 5vh, 56px);
}
.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-mark {
  position: absolute; z-index: 1;
  right: clamp(20px, 4.4vw, 72px); bottom: clamp(28px, 5.5vh, 64px);
  width: clamp(240px, 30vw, 500px);
  opacity: .92;
  pointer-events: none;
}
@media (max-width: 1250px) {
  .hero-mark { width: clamp(190px, 23vw, 290px); }
}
.hero-foot {
  position: absolute; z-index: 2;
  left: 50%; bottom: 28px; transform: translateX(-50%);
}
.scroll-cue {
  display: flex; flex-direction: column; align-items: center; gap: 14px;
  font-family: var(--font-en); font-size: 9px; letter-spacing: .5em;
  text-transform: uppercase; color: var(--fg-sub);
  writing-mode: vertical-rl;
}
.scroll-cue::after {
  content: ""; width: 1px; height: 56px;
  background: linear-gradient(var(--gold), transparent);
  animation: cueDrop 2.4s var(--ease-io) infinite;
}
@keyframes cueDrop {
  0% { transform: scaleY(0); transform-origin: top; }
  45% { transform: scaleY(1); transform-origin: top; }
  55% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- Reveal system ---------- */
.reveal { opacity: 0; transform: translateY(36px); }
.reveal.is-in {
  opacity: 1; transform: none;
  transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}
.reveal[data-delay="1"].is-in { transition-delay: .12s; }
.reveal[data-delay="2"].is-in { transition-delay: .24s; }
.reveal[data-delay="3"].is-in { transition-delay: .36s; }
.reveal[data-delay="4"].is-in { transition-delay: .48s; }

.reveal-mask { overflow: hidden; display: block; }
.reveal-mask > span {
  display: block; transform: translateY(110%);
}
.reveal-mask.is-in > span {
  transform: none;
  transition: transform 1s var(--ease-io);
}

.reveal-rule { transform: scaleX(0); transform-origin: left; }
.reveal-rule.is-in { transform: none; transition: transform 1.2s var(--ease-io); }

/* ---------- Service flow (TOP & Services page) ---------- */
.svc-item {
  position: relative;
  display: grid; gap: clamp(20px, 4vw, 72px);
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  align-items: center;
  padding-block: clamp(36px, 4.6vw, 58px);
  border-top: 1px solid var(--line);
}
.svc-item:last-child { border-bottom: 1px solid var(--line); }
.svc-num {
  font-family: var(--font-en-display);
  font-size: clamp(2.4rem, 1.6rem + 3vw, 4.4rem);
  line-height: 1; color: transparent;
  -webkit-text-stroke: 1px color-mix(in srgb, var(--gold-ink) 52%, transparent);
  transition: color .6s var(--ease-out);
}
.svc-item:hover .svc-num { color: var(--gold); -webkit-text-stroke-color: transparent; }
.svc-name-en {
  font-family: var(--font-en-display);
  font-size: var(--step-2); font-weight: 500; line-height: 1.15;
  margin-top: 10px;
}
.svc-tag {
  display: inline-block; margin-top: 14px;
  font-family: var(--font-en); font-size: 10px; font-weight: 700;
  letter-spacing: .3em; text-transform: uppercase; color: var(--gold-ink);
}
.svc-desc { max-width: 620px; }
.svc-list {
  margin-top: 22px;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 6px 24px;
  color: var(--fg-sub); font-size: var(--step--1);
}
.svc-list li {
  position: relative; padding-left: 18px; line-height: 1.9;
}
.svc-list li::before {
  content: ""; position: absolute; left: 0; top: .82em;
  width: 7px; height: 1px; background: var(--gold);
}

/* ---------- Concept flow D-D-C-M ---------- */
.concept-flow { position: relative; }
.concept-flow::before {
  content: ""; position: absolute; left: 7px; top: 12px; bottom: 12px;
  width: 1px; background: var(--line);
}
.concept-step {
  position: relative;
  padding: clamp(28px, 4vw, 44px) 0 clamp(28px, 4vw, 44px) clamp(36px, 5vw, 64px);
}
.concept-step::before {
  content: ""; position: absolute; left: 3px; top: clamp(40px, 5vw, 58px);
  width: 9px; height: 9px; transform: rotate(45deg);
  background: var(--bg); border: 1px solid var(--gold);
  transition: background .5s;
}
.concept-step.is-in::before { background: var(--gold); }
.concept-step-en {
  font-family: var(--font-en-display);
  font-size: var(--step-3); font-weight: 500; line-height: 1;
  display: flex; align-items: baseline; gap: 18px;
}
.concept-step-en .idx {
  font-family: var(--font-en); font-size: 10px; letter-spacing: .3em;
  color: var(--gold-ink);
}
.concept-step p { margin-top: 14px; max-width: 560px; color: var(--fg-sub); }

/* ---------- Values ---------- */
.value-row {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(16px, 4vw, 72px);
  align-items: baseline;
  padding-block: clamp(26px, 3.6vw, 40px);
  border-top: 1px solid var(--line);
  transition: background .4s;
}
.value-row:last-child { border-bottom: 1px solid var(--line); }
.value-en {
  font-family: var(--font-en-display);
  font-size: clamp(1.9rem, 1.2rem + 3.4vw, 4rem);
  font-weight: 500; line-height: 1;
  display: flex; align-items: baseline; gap: 20px;
  transition: transform .5s var(--ease-out), color .5s;
}
.value-en .idx { font-family: var(--font-en); font-size: 10px; letter-spacing: .3em; color: var(--gold-ink); }
.value-row:hover .value-en { transform: translateX(10px); }
.value-ja { font-family: var(--font-ja-mincho); font-size: var(--step-1); }
.value-note { color: var(--fg-sub); font-size: var(--step--1); margin-top: 8px; }

/* ---------- Values pentagon ---------- */
.values-widget {
  display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  gap: clamp(32px, 5vw, 72px); align-items: center;
}
.values-pent { position: relative; max-width: 480px; margin-inline: auto; width: 100%; }
.values-pent svg { width: 100%; height: auto; display: block; }
.vp-outline { fill: none; stroke: var(--line-strong); stroke-width: 1; }
.vp-spokes line {
  stroke: var(--line); stroke-width: 1;
  transition: stroke .5s;
}
.vp-spokes line.is-active { stroke: var(--gold); }
.vp-marks rect {
  fill: var(--bg); stroke: var(--line-strong); stroke-width: 1;
  transition: fill .4s, stroke .4s;
}
.vp-marks rect.is-active { fill: var(--gold); stroke: var(--gold); }
.vp-center { fill: var(--gold); }
.vp-label {
  all: unset; cursor: pointer;
  position: absolute; transform: translate(-50%, -50%);
  font-family: var(--font-en); font-size: clamp(9px, 1.2vw, 11.5px); font-weight: 700;
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--fg-sub); padding: 6px 8px;
  transition: color .4s;
  white-space: nowrap;
}
.vp-label.is-active { color: var(--gold-ink); }
.vp-label:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.values-detail { min-height: 240px; }
.vp-idx {
  font-family: var(--font-en); font-size: 10px; font-weight: 700;
  letter-spacing: .3em; color: var(--gold-ink);
}
.vp-en {
  font-family: var(--font-en-display);
  font-size: clamp(2rem, 1.4rem + 2.6vw, 3.6rem);
  font-weight: 500; line-height: 1; margin-top: 10px;
}
.vp-ja { font-size: var(--step-1); margin-top: 16px; }
.vp-note { color: var(--fg-sub); font-size: var(--step--1); margin-top: 12px; max-width: 440px; }
.vp-en, .vp-ja, .vp-note { transition: opacity .35s; }
.values-detail.is-switching .vp-en,
.values-detail.is-switching .vp-ja,
.values-detail.is-switching .vp-note { opacity: 0; }
@media (max-width: 760px) {
  .values-widget { grid-template-columns: 1fr !important; }
  .values-pent { max-width: 320px; }
  .vp-label { font-size: 8.5px; letter-spacing: .16em; }
  .values-detail { min-height: 220px; text-align: center; }
  .vp-note { margin-inline: auto; }
}

/* ---------- Feature grid (Why OTL / Industries) ---------- */
.feat-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line); border-left: 1px solid var(--line);
}
.feat-cell {
  padding: clamp(24px, 3vw, 40px);
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  transition: background .5s var(--ease-out);
}
.feat-cell:hover { background: color-mix(in srgb, var(--gold) 5%, transparent); }
.feat-cell .idx {
  font-family: var(--font-en); font-size: 10px; font-weight: 700;
  letter-spacing: .3em; color: var(--gold-ink);
}
.feat-cell .feat-en {
  font-family: var(--font-en-display);
  font-size: var(--step-2); font-weight: 500; line-height: 1.1;
  margin-top: 14px;
}
.feat-cell .feat-ja {
  font-size: var(--step--1); font-weight: 500; letter-spacing: .12em;
  margin-top: 6px; color: var(--fg-sub);
}
.feat-cell p { margin-top: 16px; color: var(--fg-sub); font-size: var(--step--1); }

/* ---------- Case / theme cards ---------- */
.case-card {
  border: 1px solid var(--line);
  padding: clamp(28px, 3.4vw, 44px);
  display: grid; gap: 18px; align-content: start;
  transition: border-color .5s, transform .5s var(--ease-out);
  background: var(--bg);
}
.case-card:hover { border-color: var(--gold); transform: translateY(-4px); }
a.case-card { cursor: pointer; }
.case-card[id] { scroll-margin-top: 120px; }
.case-badge {
  font-family: var(--font-en); font-size: 9.5px; font-weight: 700;
  letter-spacing: .3em; text-transform: uppercase;
  color: var(--gold-ink); border: 1px solid var(--gold);
  background: var(--gold-dim);
  padding: 5px 12px; justify-self: start;
}
.case-title { font-size: var(--step-1); font-weight: 500; line-height: 1.7; }
.case-meta {
  display: flex; flex-wrap: wrap; gap: 8px;
  font-family: var(--font-en); font-size: 9px; font-weight: 700;
  letter-spacing: .22em; text-transform: uppercase; color: var(--fg-sub);
}
.case-meta span { border: 1px solid var(--line); padding: 4px 10px; }
.case-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2vw, 28px);
}

/* SDDCM structure rows inside case detail */
.sddcm { display: grid; gap: 0; border-top: 1px solid var(--line); }
.sddcm-row {
  display: grid; grid-template-columns: 190px 1fr;
  gap: 16px; padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.sddcm-row dt {
  font-family: var(--font-en); font-size: 10px; font-weight: 700;
  letter-spacing: .28em; text-transform: uppercase; color: var(--gold-ink);
  padding-top: 6px;
}
.sddcm-row dd { color: var(--fg-sub); font-size: var(--step--1); }

/* ---------- Philosophy (Kumiko abstraction) ---------- */
.phil-canvas-wrap {
  position: relative; aspect-ratio: 1/1; max-width: 520px;
  border: 1px solid var(--line);
}
.phil-canvas-wrap canvas { position: absolute; inset: 0; width: 100%; height: 100%; }

/* 組子 — 部材が織り合わさり、見えない設計が流れ続ける */
.kumiko-joint { position: absolute; inset: 0; width: 100%; height: 100%; color: var(--fg); }
.kumiko-joint .kj-grid line {
  stroke-dasharray: 400; stroke-dashoffset: 400;
  transition: stroke-dashoffset 1.4s var(--ease-io);
}
.kumiko-joint .kj-beam { transition: transform 1.2s var(--ease-io), opacity .8s; opacity: 0; }
.kumiko-joint .kj-v1 { transform: translateY(-52px); transition-delay: .4s; }
.kumiko-joint .kj-v2 { transform: translateY(52px);  transition-delay: .55s; }
.kumiko-joint .kj-h1 { transform: translateX(-52px); transition-delay: .7s; }
.kumiko-joint .kj-h2 { transform: translateX(52px);  transition-delay: .85s; }
.kumiko-joint .kj-hidden {
  stroke-dashoffset: 120; opacity: 0;
  transition: stroke-dashoffset 1.2s var(--ease-io) 1.9s, opacity .6s 1.9s;
}
.kumiko-joint .kj-nodes circle {
  opacity: 0; transform: scale(.2); transform-origin: center; transform-box: fill-box;
  transition: opacity .5s 2.5s, transform .6s var(--ease-out) 2.5s;
}
.phil-canvas-wrap.is-in .kj-grid line { stroke-dashoffset: 0; }
.phil-canvas-wrap.is-in .kj-beam { transform: none; opacity: 1; }
.phil-canvas-wrap.is-in .kj-hidden { stroke-dashoffset: 0; opacity: 1; }
.phil-canvas-wrap.is-in .kj-nodes circle { opacity: 1; transform: scale(1); }

/* 組み上がり後 — 止まらない: 格子が開いては締まり、見えない設計が流れ続ける */
@keyframes kjFlow { to { stroke-dashoffset: -120; } }
@keyframes kjWeaveUp {
  0%, 100% { transform: translateY(0); }
  42%, 58% { transform: translateY(-13px); }
}
@keyframes kjWeaveDown {
  0%, 100% { transform: translateY(0); }
  42%, 58% { transform: translateY(13px); }
}
@keyframes kjWeaveLeft {
  0%, 100% { transform: translateX(0); }
  42%, 58% { transform: translateX(-13px); }
}
@keyframes kjWeaveRight {
  0%, 100% { transform: translateX(0); }
  42%, 58% { transform: translateX(13px); }
}
@keyframes kjPulse {
  0%, 100% { opacity: .5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.6); }
}
.phil-canvas-wrap.is-in .kj-hidden {
  animation: kjFlow 3.6s linear 3s infinite;
}
.phil-canvas-wrap.is-in .kj-v1 { animation: kjWeaveUp 8s ease-in-out 3s infinite; }
.phil-canvas-wrap.is-in .kj-v2 { animation: kjWeaveDown 8s ease-in-out 3s infinite; }
.phil-canvas-wrap.is-in .kj-h1 { animation: kjWeaveLeft 8s ease-in-out 3s infinite; }
.phil-canvas-wrap.is-in .kj-h2 { animation: kjWeaveRight 8s ease-in-out 3s infinite; }
.phil-canvas-wrap.is-in .kj-nodes circle {
  animation: kjPulse 4s ease-in-out infinite;
}
.phil-canvas-wrap.is-in .kj-nodes circle:nth-child(1) { animation-delay: 3s; }
.phil-canvas-wrap.is-in .kj-nodes circle:nth-child(2) { animation-delay: 4s; }
.phil-canvas-wrap.is-in .kj-nodes circle:nth-child(3) { animation-delay: 5s; }
.phil-canvas-wrap.is-in .kj-nodes circle:nth-child(4) { animation-delay: 6s; }
@media (prefers-reduced-motion: reduce) {
  .kumiko-joint .kj-grid line { stroke-dashoffset: 0; }
  .kumiko-joint .kj-beam, .kumiko-joint .kj-hidden, .kumiko-joint .kj-nodes circle {
    opacity: 1; transform: none; stroke-dashoffset: 0;
    animation: none !important;
  }
}

.phil-keys { display: grid; gap: 0; margin-top: 8px; }
.phil-key {
  display: flex; align-items: baseline; gap: 18px;
  padding: 16px 0; border-bottom: 1px solid var(--line);
}
.phil-key .en {
  font-family: var(--font-en); font-size: 11px; font-weight: 700;
  letter-spacing: .3em; text-transform: uppercase; min-width: 200px;
}
.phil-key .ja { color: var(--fg-sub); font-size: var(--step--1); }

/* ---------- Message ---------- */
.message-name {
  display: grid; gap: 4px; margin-top: clamp(32px, 5vw, 56px);
}
.message-name .position { font-size: var(--step--1); color: var(--fg-sub); }
.message-name .name {
  font-family: var(--font-ja-mincho); font-size: var(--step-2);
  letter-spacing: .14em;
}
.signature {
  height: clamp(48px, 6vw, 68px); width: auto;
  margin-top: 6px;
}
.signature--sm { height: clamp(30px, 3.6vw, 40px); }
.message-name .name-en {
  font-family: var(--font-en-display); font-size: var(--step-0);
  font-style: italic; color: var(--gold-ink); letter-spacing: .08em;
}
.portrait {
  position: relative;
  aspect-ratio: 3/4;
  border: 1px solid var(--line);
  overflow: hidden;
}
.portrait img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: 52% 20%;
}
.portrait-stack { display: grid; }
.portrait .portrait-alt {
  position: absolute; inset: 0; z-index: 1;
  width: 100%; height: 100%;
  object-fit: cover; object-position: 50% 18%;
  opacity: 0;
  transition: opacity .55s var(--ease-out);
}
.portrait:hover .portrait-alt,
.portrait.is-alt .portrait-alt { opacity: 1; }
.portrait figcaption { z-index: 2; }
.portrait figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 14px 18px;
  font-family: var(--font-en); font-size: 9px; font-weight: 700;
  letter-spacing: .3em; text-transform: uppercase;
  color: #EDEAE2;
  background: linear-gradient(transparent, #11121466 40%, #11121499);
}
.portrait-placeholder {
  position: relative; aspect-ratio: 3/4;
  border: 1px solid var(--line);
  display: grid; place-items: center;
  background:
    linear-gradient(160deg, transparent 48%, var(--gold-dim) 49%, transparent 52%),
    linear-gradient(20deg, transparent 58%, #9AA0A814 59%, transparent 62%);
  overflow: hidden;
}
.portrait-placeholder .ph-mark {
  font-family: var(--font-en-display);
  font-size: clamp(4rem, 10vw, 8rem); line-height: 1;
  color: transparent; -webkit-text-stroke: 1px var(--line-strong);
}
.portrait-placeholder .ph-note {
  position: absolute; bottom: 18px; left: 0; right: 0; text-align: center;
  font-family: var(--font-en); font-size: 9px; letter-spacing: .3em;
  text-transform: uppercase; color: var(--fg-sub);
}

/* ---------- Network ---------- */
.network-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line); border-left: 1px solid var(--line);
}
.network-cell {
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: clamp(26px, 3vw, 38px) 16px;
  display: grid; place-content: center; gap: 8px; text-align: center;
  font-family: var(--font-en); font-size: 13px; font-weight: 600;
  letter-spacing: .26em; text-transform: uppercase;
  transition: background .5s;
}
.network-cell:hover { background: color-mix(in srgb, var(--gold) 6%, transparent); }
.network-cell .dot {
  width: 6px; height: 6px; margin-inline: auto;
  transform: rotate(45deg); border: 1px solid var(--gold);
}

/* ---------- Architectural imagery ---------- */
.arch-band {
  position: relative;
  height: clamp(260px, 44vh, 500px);
  overflow: clip;
}
.arch-band img {
  width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(.55) contrast(.98);
  transition: filter 1.6s var(--ease-out), transform 1.6s var(--ease-out);
  transform: scale(1.04);
}
.arch-band.is-in img { filter: grayscale(.25) contrast(1); transform: scale(1); }
.arch-band figcaption {
  position: absolute; right: var(--gutter); bottom: 16px;
  font-family: var(--font-en); font-size: 8.5px; font-weight: 600;
  letter-spacing: .3em; text-transform: uppercase; color: #FFFFFFB8;
}

.cta-band--arch { position: relative; overflow: clip; }
.cta-band--arch .cta-arch-bg {
  position: absolute; inset: 0; z-index: 0;
  background-size: cover; background-position: center;
  opacity: .16;
  filter: grayscale(.6);
}
.cta-band--arch::after {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(color-mix(in srgb, var(--ivory) 55%, transparent), var(--ivory) 86%);
}
.cta-band--arch > .container { position: relative; z-index: 2; }

/* ---------- Support themes list (TOP) ---------- */
.theme-list {
  list-style: none; margin: 0; padding: 0;
  display: grid;
  border-top: 1px solid var(--line);
}
.theme-list li { border-bottom: 1px solid var(--line); }
.theme-list a {
  display: flex; align-items: baseline; gap: clamp(18px, 3vw, 32px);
  padding: clamp(18px, 2.6vw, 26px) 4px;
  transition: padding-left .4s var(--ease-out);
}
.theme-list .t-idx {
  font-family: var(--font-en); font-size: 10px; font-weight: 700;
  letter-spacing: .3em; text-transform: uppercase;
  color: var(--gold-ink); flex: none; width: 74px;
}
.theme-list .t-title { font-size: var(--step-0); }
.theme-list .arrow {
  width: 26px; height: 8px; flex: none;
  margin-left: auto; align-self: center;
  opacity: .35; transform: translateX(-8px);
  transition: opacity .4s var(--ease-out), transform .4s var(--ease-out);
}
.theme-list .arrow path { stroke: var(--gold-ink); fill: none; stroke-width: 1.2; }
.theme-list a:hover, .theme-list a:focus-visible { padding-left: 12px; }
.theme-list a:hover .arrow, .theme-list a:focus-visible .arrow { opacity: 1; transform: translateX(0); }

/* ---------- CTA band ---------- */
.cta-band { text-align: center; }
.cta-band .h-display { margin-bottom: 20px; font-size: clamp(25px, 3.1vw, 40px); }
.cta-band .sub { color: var(--fg-sub); margin-bottom: clamp(32px, 5vw, 52px); }

/* ---------- Page hero (subpages) ---------- */
.page-hero {
  position: relative;
  padding: clamp(180px, 24vh, 260px) 0 clamp(72px, 9vw, 120px);
  background: var(--bg); color: var(--fg);
  overflow: clip;
}
.page-hero .crumbs {
  display: flex; gap: 12px; align-items: center;
  font-family: var(--font-en); font-size: 10px; font-weight: 600;
  letter-spacing: .26em; text-transform: uppercase; color: var(--fg-sub);
  margin-bottom: clamp(28px, 4vw, 48px);
}
.page-hero .crumbs a:hover { color: var(--gold); }
.page-hero .crumbs .sep { color: var(--gold); }
.page-hero-en {
  font-family: var(--font-en-display);
  font-size: clamp(2.6rem, 1.6rem + 5.4vw, 6.4rem);
  font-weight: 500; line-height: 1; letter-spacing: 0;
}
.page-hero-ja {
  font-family: var(--font-ja-mincho);
  font-size: var(--step-2); letter-spacing: .1em; line-height: 1.9;
  margin-top: clamp(20px, 3vw, 36px);
}
.page-hero-lead { max-width: 720px; margin-top: clamp(24px, 3vw, 40px); color: var(--fg-sub); }
.page-hero-canvas { position: absolute; inset: 0; opacity: .55; pointer-events: none; }

/* ---------- Process steps (Approach) ---------- */
.proc-step {
  display: grid; grid-template-columns: minmax(0,4fr) minmax(0,8fr);
  gap: clamp(16px, 4vw, 64px);
  padding-block: clamp(32px, 4.4vw, 52px);
  border-top: 1px solid var(--line);
}
.proc-step:last-child { border-bottom: 1px solid var(--line); }
.proc-step .idx {
  font-family: var(--font-en-display);
  font-size: clamp(2rem, 1.4rem + 2.4vw, 3.4rem); line-height: 1;
  color: transparent; -webkit-text-stroke: 1px var(--line-strong);
}
.proc-step:hover .idx { color: var(--gold); -webkit-text-stroke-color: transparent; }
.proc-step .proc-en {
  font-family: var(--font-en-display); font-size: var(--step-2);
  font-weight: 500; margin-top: 8px; line-height: 1.1;
}
.proc-step .proc-ja { font-size: var(--step--1); color: var(--fg-sub); letter-spacing: .14em; margin-top: 4px; }
.proc-step p { color: var(--fg-sub); max-width: 620px; }

/* ---------- Company table ---------- */
.company-table { border-top: 1px solid var(--line); }
.company-table > div {
  display: grid; grid-template-columns: 220px 1fr;
  gap: 16px; padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.company-table dt {
  font-weight: 500; font-size: var(--step--1); letter-spacing: .12em;
  color: var(--fg-sub); padding-top: 2px;
}
.company-table dd { line-height: 1.9; }
.badge-review {
  display: inline-block; margin-left: 12px; vertical-align: 2px;
  font-family: var(--font-en); font-size: 9px; font-weight: 700;
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--gold-ink); border: 1px solid var(--gold);
  padding: 2px 8px;
}

/* ---------- Legal note ---------- */
.legal-note {
  border: 1px solid var(--line);
  border-left: 2px solid var(--gold);
  padding: clamp(24px, 3vw, 36px);
  color: var(--fg-sub); font-size: var(--step--1); line-height: 2.1;
}
.legal-note strong { color: var(--fg); font-weight: 500; }

/* ---------- Forms ---------- */
.form-grid { display: grid; gap: clamp(28px, 4vw, 40px); }
.form-row { display: grid; gap: 10px; }
.form-row.cols { grid-template-columns: 1fr 1fr; gap: clamp(20px, 3vw, 32px); }
.form-label {
  font-size: var(--step--1); font-weight: 500; letter-spacing: .1em;
  display: flex; align-items: center; gap: 10px;
}
.form-label .req {
  font-family: var(--font-en); font-size: 9px; font-weight: 700;
  letter-spacing: .2em; color: var(--gold-ink);
  border: 1px solid var(--gold); padding: 2px 8px;
}
.form-label .opt { color: var(--fg-sub); font-size: 10px; letter-spacing: .2em; }
input[type="text"], input[type="email"], input[type="tel"], select, textarea {
  width: 100%; appearance: none;
  background: transparent; color: var(--fg);
  border: 0; border-bottom: 1px solid var(--line-strong);
  border-radius: 0;
  font-family: var(--font-ja); font-size: var(--step-0);
  padding: 12px 2px;
  transition: border-color .4s;
}
select { cursor: pointer; }
.select-wrap { position: relative; }
.select-wrap::after {
  content: ""; position: absolute; right: 8px; top: 50%;
  width: 8px; height: 8px;
  border-right: 1px solid var(--fg-sub); border-bottom: 1px solid var(--fg-sub);
  transform: translateY(-70%) rotate(45deg); pointer-events: none;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-bottom-color: var(--gold);
}
input.is-error, select.is-error, textarea.is-error { border-bottom-color: #B0483C; }
.form-error { color: #B0483C; font-size: 12px; display: none; }
.form-error.is-visible { display: block; }
textarea { min-height: 180px; resize: vertical; line-height: 2; }

.radio-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
}
.choice {
  position: relative; display: flex; align-items: center; gap: 12px;
  border: 1px solid var(--line); padding: 14px 18px;
  cursor: pointer; font-size: var(--step--1);
  transition: border-color .35s, background .35s;
}
.choice:hover { border-color: var(--line-strong); }
.choice input { position: absolute; opacity: 0; }
.choice .mark {
  width: 9px; height: 9px; flex: none; transform: rotate(45deg);
  border: 1px solid var(--line-strong); transition: background .3s, border-color .3s;
}
.choice input:checked ~ .mark { background: var(--gold); border-color: var(--gold); }
.choice input:checked ~ .choice-label { color: var(--fg); }
.choice input:focus-visible ~ .mark { outline: 2px solid var(--gold); outline-offset: 3px; }
.choice:has(input:checked) { border-color: var(--gold); }

.agree-row { display: flex; align-items: flex-start; gap: 14px; font-size: var(--step--1); }
.agree-row a { text-decoration: underline; text-underline-offset: 4px; }
.agree-row a:hover { color: var(--gold); }

.form-note {
  border: 1px solid var(--line);
  padding: clamp(20px, 3vw, 28px);
  font-size: 12.5px; color: var(--fg-sub); line-height: 2;
}

.submit-btn {
  justify-content: center; width: 100%; max-width: 380px;
  padding-block: 22px;
}
.submit-btn[disabled] { opacity: .4; pointer-events: none; }
.form-status { font-size: var(--step--1); color: var(--fg-sub); }

/* ---------- Footer ---------- */
.site-footer {
  --gold-ink: #C6A868;
  background: var(--black); color: #EDEAE2;
  padding: clamp(72px, 9vw, 120px) 0 40px;
  position: relative; overflow: clip;
}
.footer-top {
  display: grid; grid-template-columns: minmax(0,6fr) minmax(0,6fr);
  gap: clamp(40px, 6vw, 96px);
  padding-bottom: clamp(48px, 6vw, 80px);
  border-bottom: 1px solid #EDEAE21c;
}
.footer-logo {
  width: clamp(140px, 18vw, 220px); height: auto;
}
.footer-brand .statement {
  font-family: var(--font-ja-mincho); font-size: var(--step-0);
  letter-spacing: .16em; margin-top: 28px; color: #C6C9CE;
}
.footer-nav {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px 32px;
  align-content: start;
}
.footer-nav a {
  font-family: var(--font-en); font-size: 11px; font-weight: 600;
  letter-spacing: .24em; text-transform: uppercase;
  padding: 8px 0; color: var(--silver);
  transition: color .3s, padding-left .3s;
}
.footer-nav a:hover { color: #EDEAE2; padding-left: 8px; }
.footer-bottom {
  display: flex; flex-wrap: wrap; gap: 16px 32px;
  justify-content: space-between; align-items: center;
  padding-top: 32px;
  font-family: var(--font-en); font-size: 10.5px;
  letter-spacing: .2em; text-transform: uppercase; color: #9AA0A8;
}
.footer-bottom .legal-links { display: flex; gap: 24px; }
.footer-bottom a:hover { color: #EDEAE2; }

/* ---------- 404 / Complete ---------- */
.state-page {
  min-height: 100svh;
  display: grid; align-content: center; justify-items: center;
  text-align: center; gap: 24px;
  background: var(--ivory); color: var(--black);
  position: relative; overflow: clip;
  padding: 120px var(--gutter);
}
.state-page canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.state-page > * { position: relative; z-index: 1; }
.state-en {
  font-family: var(--font-en-display);
  font-size: clamp(2.6rem, 1.4rem + 6vw, 6rem);
  font-weight: 500; line-height: 1.05;
}
.state-en em { font-style: italic; color: var(--gold-ink); }
.state-ja { color: var(--fg-sub); font-size: var(--step--1); line-height: 2.4; }
.state-ctas { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; margin-top: 16px; }

/* ---------- Draft overlay (?draft=1) ---------- */
.draft-panel {
  position: fixed; right: 16px; bottom: 16px; z-index: 320;
  width: min(360px, calc(100vw - 32px));
  max-height: 60vh; overflow: auto;
  background: var(--black); color: var(--ivory);
  border: 1px solid var(--gold);
  padding: 20px; font-size: 12px; line-height: 1.8;
}
.draft-panel h2 {
  font-family: var(--font-en); font-size: 11px; letter-spacing: .3em;
  text-transform: uppercase; color: var(--gold); margin-bottom: 12px;
}
.draft-panel li { display: flex; gap: 10px; justify-content: space-between; padding: 4px 0; border-bottom: 1px solid #EDEAE21a; }
.draft-panel .st { color: var(--gold); font-family: var(--font-en); font-size: 9px; letter-spacing: .12em; text-transform: uppercase; flex: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .gnav .gnav-links { display: none; }
  .menu-toggle { display: grid; }
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .network-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  body { line-height: 2.05; }
  .grid-2, .svc-item, .proc-step { grid-template-columns: 1fr !important; }
  .grid-sticky-label { position: static; }
  .feat-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .value-row { grid-template-columns: 1fr; gap: 10px; }
  .company-table > div { grid-template-columns: 1fr; gap: 6px; padding: 18px 0; }
  .sddcm-row { grid-template-columns: 1fr; gap: 4px; }
  .footer-top { grid-template-columns: 1fr; }
  .form-row.cols { grid-template-columns: 1fr; }
  .hero-foot { display: none; }
  .hero { min-height: auto; }
  .hero-inner { padding-top: 140px; padding-bottom: 16px; }
  .hero-mark { position: static; width: 170px; margin: 24px 0 8px var(--gutter); opacity: .9; }
  .brand-logo { height: 34px; }
  .network-grid { grid-template-columns: 1fr 1fr; }
  .network-cell { font-size: 10px; letter-spacing: .2em; }
  .gnav .nav-contact { display: none; }
  .lang-panel { right: -52px; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001s !important;
  }
  .reveal, .reveal-mask > span, .reveal-rule { opacity: 1 !important; transform: none !important; }
  .hero-canvas, .page-hero-canvas, .menu-lines { display: none; }
  .scroll-cue::after { animation: none; }
}