/* =========================================================
   OTONO TSUSHIN — Special Site
   Stack: vanilla CSS, Three.js, custom scroll JS
   ========================================================= */

/* ---------- design tokens ---------- */
:root {
  --bg:         #04070d;
  --bg-2:       #070b14;
  --ink:        #e6f1ff;
  --ink-soft:   #b8c8dd;
  --ink-mute:   #6f8094;
  --line:       rgba(180, 210, 240, 0.14);
  --line-soft:  rgba(180, 210, 240, 0.06);
  --cyan:       #7adbff;
  --cyan-deep:  #2aa9d6;
  --cyan-glow:  rgba(122, 219, 255, 0.45);
  --accent:     #b6f2ff;

  --font-jp:  "Noto Sans JP", "Hiragino Kaku Gothic ProN", system-ui, sans-serif;
  --font-en:  "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-min: "Shippori Mincho", "Hiragino Mincho ProN", serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace;

  --ease-out:  cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.65, 0.05, 0.36, 1);

  --pad-x:  clamp(20px, 4vw, 64px);
  --header-h: 72px;
}

/* ---------- reset ---------- */
*,*::before,*::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: auto; }
body {
  font-family: var(--font-jp);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  cursor: none;
}
@media (max-width: 880px) { body { cursor: auto; } }
img, svg, video, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol, dl { list-style: none; padding: 0; margin: 0; }
button { font: inherit; }
em, i { font-style: normal; }
::selection { background: var(--cyan); color: #04070d; }

/* ---------- global layers ---------- */
#webgl {
  position: fixed; inset: 0;
  width: 100vw; height: 100vh;
  z-index: 0;
  pointer-events: none;
}
.grain {
  position: fixed; inset: -10%;
  z-index: 5; pointer-events: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' seed='5'/><feColorMatrix values='0 0 0 0 0.55  0 0 0 0 0.78  0 0 0 0 0.95  0 0 0 0.55 0'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.4'/></svg>");
  opacity: .06;
  mix-blend-mode: overlay;
  animation: grain 1.6s steps(4) infinite;
}
@keyframes grain {
  0%   { transform: translate(0,0); }
  25%  { transform: translate(-1%, 1%); }
  50%  { transform: translate(1%, -1%); }
  75%  { transform: translate(-2%, -1%); }
  100% { transform: translate(0,0); }
}

/* ---------- custom cursor ---------- */
.cursor {
  position: fixed; left: 0; top: 0;
  width: 0; height: 0;
  z-index: 9999; pointer-events: none;
  mix-blend-mode: difference;
}
.cursor__dot, .cursor__ring {
  position: absolute; left: 0; top: 0;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width .35s var(--ease-out), height .35s var(--ease-out),
              background .3s, border-color .3s, opacity .3s;
}
.cursor__dot  { width: 6px;  height: 6px;  background: #fff; }
.cursor__ring { width: 32px; height: 32px; border: 1px solid #fff; opacity: .8; }
body.cursor-link .cursor__ring { width: 64px; height: 64px; border-color: var(--cyan); }
body.cursor-link .cursor__dot  { width: 4px;  height: 4px;  background: var(--cyan); }
@media (max-width: 880px) { .cursor { display: none; } }

/* ---------- scroll progress ---------- */
.scroll-progress {
  position: fixed; left: 0; top: 0; right: 0;
  height: 2px; z-index: 100;
  background: rgba(255,255,255,.04);
}
.scroll-progress span {
  display: block; height: 100%; width: 0;
  background: linear-gradient(90deg, var(--cyan-deep), var(--cyan));
  box-shadow: 0 0 14px var(--cyan-glow);
  transition: width .15s linear;
}

/* ---------- loader ---------- */
.loader {
  position: fixed; inset: 0;
  z-index: 10000;
  background: var(--bg);
  display: grid; place-items: center;
  transition: opacity .8s var(--ease-out), visibility .8s;
}
.loader.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loader__inner {
  width: min(360px, 60vw);
  text-align: center;
  font-family: var(--font-en);
}
.loader__line {
  position: relative;
  height: 1px;
  background: var(--line);
  overflow: hidden;
  margin: 0 0 24px;
}
.loader__line span {
  position: absolute; left: 0; top: 0;
  height: 100%; width: 0;
  background: linear-gradient(90deg, var(--cyan-deep), var(--cyan), #fff);
  box-shadow: 0 0 18px var(--cyan-glow);
}
.loader__brand {
  letter-spacing: .42em;
  font-size: 11px;
  color: var(--ink-soft);
  margin: 0;
}
.loader__counter {
  margin: 8px 0 0;
  font-size: 56px;
  font-weight: 200;
  letter-spacing: -0.02em;
  color: var(--ink);
  font-family: var(--font-en);
  font-variant-numeric: tabular-nums;
}
.loader__counter::after { content: "%"; font-size: 14px; vertical-align: top; margin-left: 6px; color: var(--ink-mute); }

/* ---------- site header ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 92;
  height: var(--header-h);
  padding: 0 var(--pad-x);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  color: var(--ink);
  transition: background .4s var(--ease-out), backdrop-filter .4s;
}
.site-header.is-scrolled {
  background: linear-gradient(to bottom, rgba(4,7,13,.78), rgba(4,7,13,0));
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.site-header__logo {
  display: inline-flex; gap: 12px; align-items: center;
  color: var(--ink);
}
.logo-mark { color: var(--cyan); display: inline-flex; }
.logo-text { display: inline-flex; flex-direction: column; line-height: 1; }
.logo-text__jp { font-family: var(--font-min); font-size: 15px; letter-spacing: .12em; }
.logo-text__en { font-family: var(--font-en); font-size: 9.5px; letter-spacing: .35em; color: var(--ink-mute); margin-top: 4px; }

.site-nav ul {
  display: flex; gap: clamp(16px, 2.4vw, 36px);
  font-family: var(--font-en);
  font-size: 12.5px;
  letter-spacing: .18em;
}
.site-nav a { display: inline-flex; align-items: baseline; gap: 6px; color: var(--ink-soft); transition: color .3s; }
.site-nav a span { font-size: 9.5px; color: var(--ink-mute); }
.site-nav a:hover { color: var(--cyan); }
@media (max-width: 880px) { .site-nav { display: none; } }

.site-header__cta {
  justify-self: end;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--ink);
  transition: border-color .3s, color .3s, background .3s;
}
.site-header__cta:hover { border-color: var(--cyan); color: var(--cyan); }
.site-header__cta svg { transition: transform .3s var(--ease-out); }
.site-header__cta:hover svg { transform: translateX(4px); }

/* ---------- shared section structure ---------- */
main { position: relative; z-index: 2; }
.section {
  position: relative;
  padding: clamp(96px, 14vh, 180px) var(--pad-x);
  min-height: 100vh;
  display: flex; flex-direction: column;
}
.section__index {
  display: inline-flex; align-items: center; gap: 14px;
  font-family: var(--font-en);
  font-size: 11px; letter-spacing: .34em;
  color: var(--ink-soft);
  margin-bottom: clamp(48px, 10vh, 120px);
}
.section__index span:first-child { color: var(--cyan); font-weight: 500; }
.section__index i {
  display: inline-block; width: clamp(40px, 6vw, 80px); height: 1px;
  background: linear-gradient(90deg, var(--cyan-deep), transparent);
}

/* ============== HERO ============== */
.hero {
  position: relative;
  min-height: 100vh; height: auto;
  padding: var(--header-h) var(--pad-x) 96px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  row-gap: clamp(40px, 8vh, 96px);
}
.hero__meta {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px;
  font-family: var(--font-en);
  font-size: 11px; letter-spacing: .3em;
  color: var(--ink-mute);
}
.meta-label { color: var(--cyan); }
.meta-coord { font-variant-numeric: tabular-nums; }

.hero__title {
  font-family: var(--font-en);
  font-weight: 200;
  font-size: clamp(48px, 16vw, 220px);
  line-height: 0.86;
  letter-spacing: -0.04em;
  margin: 0; padding: 0;
  align-self: end;
  text-transform: uppercase;
  color: var(--ink);
}
.hero__title-line { display: block; overflow: hidden; }
.hero__title-line--center { padding-left: clamp(40px, 12vw, 220px); }
.hero__title-line .reveal {
  display: inline-block;
  transform: translateY(110%);
  transition: transform 1.2s var(--ease-out);
}
.is-ready .hero__title-line .reveal { transform: translateY(0); }
.is-ready .hero__title-line:nth-child(2) .reveal { transition-delay: .1s; }
.is-ready .hero__title-line:nth-child(3) .reveal { transition-delay: .2s; }
.hero__dot {
  color: var(--cyan);
  display: inline-block;
  transform: translateY(-6px);
}

.hero__sub {
  margin: clamp(24px, 4vh, 40px) 0 0;
  display: flex; gap: clamp(20px, 4vw, 64px); align-items: baseline;
  flex-wrap: wrap;
}
.hero__sub-jp {
  font-family: var(--font-min);
  font-size: clamp(20px, 2.4vw, 30px);
  letter-spacing: .14em;
  color: var(--ink);
}
.hero__sub-en {
  font-family: var(--font-en);
  font-size: 12.5px; letter-spacing: .22em;
  color: var(--ink-mute);
  text-transform: uppercase;
}

.hero__caption {
  align-self: end;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 24px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.hero__caption p {
  max-width: 520px;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.95;
  color: var(--ink-soft);
}
.hero__caption p i { color: var(--cyan); }

.hero__scroll {
  display: inline-flex; flex-direction: column;
  align-items: center; gap: 12px;
  font-family: var(--font-en);
  font-size: 10.5px; letter-spacing: .42em;
  color: var(--ink-soft);
  padding: 4px 0;
}
.hero__scroll-line {
  width: 1px; height: 56px;
  background: var(--line);
  position: relative; overflow: hidden;
}
.hero__scroll-line i {
  position: absolute; left: 0; top: -50%;
  width: 100%; height: 50%;
  background: linear-gradient(to bottom, transparent, var(--cyan));
  animation: scrollPulse 2.2s var(--ease-soft) infinite;
}
@keyframes scrollPulse {
  0%   { top: -50%; }
  100% { top: 100%; }
}

.side-rail {
  position: absolute; top: 50%;
  transform: translateY(-50%) rotate(-90deg);
  transform-origin: center;
  font-family: var(--font-en);
  font-size: 10px; letter-spacing: .4em;
  color: var(--ink-mute);
}
.side-rail--left  { left:  calc(var(--pad-x) * 0.6 - 32px); }
.side-rail--right { right: calc(var(--pad-x) * 0.6 - 64px); }
.side-rail--right span { font-variant-numeric: tabular-nums; }
@media (max-width: 1080px) { .side-rail { display: none; } }

/* ============== PHILOSOPHY ============== */
.section--philosophy { background: linear-gradient(to bottom, transparent, rgba(7,11,20,0.4)); }
.philosophy {
  max-width: 920px;
}
.philosophy__lead {
  font-family: var(--font-min);
  font-size: clamp(28px, 4.4vw, 60px);
  line-height: 1.45;
  letter-spacing: .04em;
  color: var(--ink);
  margin: 0;
}
.philosophy__lead em { color: var(--cyan); }
.philosophy__body {
  margin: clamp(40px, 6vh, 64px) 0 0;
  max-width: 620px;
  font-size: 14.5px;
  line-height: 2.1;
  color: var(--ink-soft);
}
.philosophy__quote {
  margin-top: clamp(48px, 7vh, 80px);
  padding: 32px 0 0;
  border-top: 1px solid var(--line);
  display: grid; grid-template-columns: auto 1fr; gap: 24px;
  align-items: start;
}
.philosophy__quote span {
  font-family: var(--font-min);
  font-size: 96px;
  line-height: .6;
  color: var(--cyan);
}
.philosophy__quote p {
  font-family: var(--font-min);
  font-size: clamp(18px, 1.8vw, 22px);
  line-height: 1.85;
  margin: 0;
  color: var(--ink);
  letter-spacing: .08em;
}

/* ============== PILLARS ============== */
.pillars__header {
  display: grid; grid-template-columns: auto 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: end;
  margin-bottom: clamp(56px, 9vh, 100px);
}
.pillars__header h2 {
  font-family: var(--font-min);
  font-size: clamp(40px, 6vw, 88px);
  font-weight: 500;
  letter-spacing: .04em;
  line-height: 1.18;
  margin: 0;
  white-space: nowrap;
}
.pillars__header p {
  max-width: none;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--ink-soft);
  padding-bottom: 6px;
}
@media (max-width: 880px) {
  .pillars__header { grid-template-columns: 1fr; }
  .pillars__header h2 { white-space: normal; font-size: clamp(32px, 7.5vw, 56px); }
}

.pillars {
  display: flex; flex-direction: column;
  border-top: 1px solid var(--line);
}
.pillar {
  display: grid;
  grid-template-columns: minmax(120px, 1fr) minmax(280px, 2fr) minmax(220px, 1.4fr);
  gap: clamp(20px, 3vw, 56px);
  padding: clamp(40px, 6vh, 64px) 0;
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: background .6s var(--ease-out);
}
.pillar::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 80% 50%, var(--cyan-glow), transparent 60%);
  opacity: 0; transition: opacity .8s var(--ease-out);
  pointer-events: none;
}
.pillar:hover::after { opacity: .25; }

.pillar__head {
  display: flex; flex-direction: column; gap: 12px;
  font-family: var(--font-en);
}
.pillar__num {
  font-size: clamp(56px, 6vw, 96px);
  font-weight: 200;
  letter-spacing: -0.04em;
  color: var(--cyan);
  line-height: 1;
}
.pillar__tag {
  font-size: 10.5px; letter-spacing: .38em;
  color: var(--ink-mute);
}

.pillar__title {
  font-family: var(--font-min);
  font-size: clamp(28px, 3.4vw, 52px);
  font-weight: 500;
  letter-spacing: .04em;
  line-height: 1.3;
  margin: 0;
}
.pillar__title .reveal {
  display: block;
  opacity: 0; transform: translateY(40px);
  transition: opacity .9s var(--ease-out), transform .9s var(--ease-out);
}
.pillar.is-in .pillar__title .reveal { opacity: 1; transform: translateY(0); }
.pillar.is-in .pillar__title .reveal:nth-child(2) { transition-delay: .08s; }

.pillar__body {
  font-size: 13.5px;
  line-height: 1.95;
  color: var(--ink-soft);
  margin: 0;
  grid-column: 2;
  max-width: 520px;
}
.pillar__meta {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: .14em;
  display: flex; flex-direction: column;
  gap: 14px;
  padding-top: 4px;
  border-left: 1px solid var(--line);
  padding-left: clamp(16px, 1.6vw, 28px);
}
.pillar__meta div { display: flex; flex-direction: column; gap: 2px; }
.pillar__meta dt { color: var(--ink-mute); font-size: 9.5px; letter-spacing: .3em; text-transform: uppercase; margin: 0; }
.pillar__meta dd { color: var(--ink); margin: 0; font-family: var(--font-jp); font-size: 12.5px; letter-spacing: .04em; }

@media (max-width: 880px) {
  .pillar { grid-template-columns: 1fr; }
  .pillar__body { grid-column: 1; }
  .pillar__meta { border-left: none; padding-left: 0; border-top: 1px solid var(--line); padding-top: 20px; }
}

/* ============== SERVICES ============== */
.services__header {
  display: grid; grid-template-columns: auto 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: end;
  margin-bottom: clamp(48px, 8vh, 88px);
}
.services__header h2 {
  font-family: var(--font-min);
  font-size: clamp(36px, 5.2vw, 76px);
  font-weight: 500;
  letter-spacing: .04em;
  line-height: 1.18;
  margin: 0;
  white-space: nowrap;
}
.services__header p {
  max-width: none;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--ink-soft);
  padding-bottom: 6px;
}
@media (max-width: 880px) {
  .services__header { grid-template-columns: 1fr; }
  .services__header h2 { white-space: normal; font-size: clamp(32px, 7.5vw, 56px); }
}

.services {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
@media (max-width: 1280px) { .services { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 880px)  { .services { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px)  { .services { grid-template-columns: 1fr; } }

.service {
  position: relative;
  padding: 36px clamp(14px, 1.4vw, 24px) 36px;
  border-right: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 14px;
  min-height: 340px;
  transition: background .5s var(--ease-out);
}
.service:last-child { border-right: none; }
@media (max-width: 1280px) {
  .service:nth-child(3n) { border-right: none; }
  .service:not(:nth-last-child(-n+3)) { border-bottom: 1px solid var(--line); }
}
@media (max-width: 880px) {
  .service { border-right: none; }
  .service:nth-child(odd) { border-right: 1px solid var(--line); }
  .service:not(:nth-last-child(-n+2)) { border-bottom: 1px solid var(--line); }
}
@media (max-width: 560px) {
  .service { border-right: none; border-bottom: 1px solid var(--line); }
  .service:last-child { border-bottom: none; }
}
.service::before {
  content: ""; position: absolute; inset: auto 0 0 0; height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  transform: scaleX(0); transform-origin: left;
  transition: transform .6s var(--ease-out);
}
.service:hover::before { transform: scaleX(1); }
.service:hover { background: rgba(122,219,255,0.04); }

.service__num {
  font-family: var(--font-en);
  font-size: 10.5px; letter-spacing: .3em;
  color: var(--cyan);
}
.service__icon {
  display: inline-flex;
  width: 44px; height: 44px;
  margin: 6px 0 -2px;
  color: var(--cyan);
  opacity: .82;
  transition: opacity .4s var(--ease-out), transform .5s var(--ease-out), color .3s;
}
.service__icon svg { width: 100%; height: 100%; }
.service:hover .service__icon { opacity: 1; transform: translateY(-2px); color: #b6f2ff; }
.service__title {
  margin: 8px 0 0;
  display: flex; flex-direction: column; gap: 4px;
}
.service__en {
  font-family: var(--font-en);
  font-size: clamp(20px, 1.8vw, 26px);
  letter-spacing: -0.01em;
  font-weight: 400;
  color: var(--ink);
}
.service__jp {
  font-family: var(--font-min);
  font-size: 13px;
  letter-spacing: .2em;
  color: var(--ink-mute);
}
.service__desc {
  margin: auto 0 0; padding-top: 16px;
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}
.service__arrow {
  font-family: var(--font-en);
  font-size: 22px;
  color: var(--ink-mute);
  align-self: end;
  transition: color .3s, transform .3s var(--ease-out);
}
.service:hover .service__arrow { color: var(--cyan); transform: translateX(6px); }

/* clickable cover for top-page service cards */
.service__cover {
  position: absolute; inset: 0;
  z-index: 3;
  background: transparent;
  cursor: none;
}
.service { transition: background .5s var(--ease-out), transform .5s var(--ease-out); }
.service:hover { transform: translateY(-4px); }

.marquee {
  margin-top: clamp(80px, 12vh, 140px);
  overflow: hidden;
  white-space: nowrap;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 16px 0;
}
.marquee__track {
  display: inline-flex; gap: 32px;
  font-family: var(--font-en);
  font-size: clamp(28px, 3vw, 44px);
  letter-spacing: .12em;
  color: var(--ink-soft);
  animation: marquee 28s linear infinite;
}
.marquee__track span:nth-child(2n) { color: var(--cyan); }
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ============== CONTACT ============== */
.section--contact {
  text-align: left;
}
.contact {
  max-width: 1400px;
  margin: 0 auto;
  text-align: center;
}
.contact__pre {
  font-family: var(--font-min);
  font-size: clamp(14px, 1.4vw, 18px);
  letter-spacing: .2em;
  color: var(--cyan);
  margin: 0 0 24px;
}
.contact__title {
  font-family: var(--font-min);
  font-size: clamp(28px, 9vw, 168px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: .03em;
  margin: 0;
  white-space: nowrap;
}
@media (max-width: 960px) {
  .contact__title { white-space: normal; font-size: clamp(28px, 8vw, 88px); line-height: 1.2; text-wrap: balance; }
  .contact__title br { display: none; }
}
.contact__lead {
  margin: clamp(32px, 5vh, 56px) auto 0;
  max-width: 540px;
  font-size: 13.5px;
  line-height: 2;
  color: var(--ink-soft);
}

.contact__cta {
  display: inline-block;
  margin: clamp(48px, 8vh, 96px) 0 0;
  padding: 26px 56px;
  border: 1px solid var(--cyan);
  border-radius: 999px;
  color: var(--ink);
  position: relative;
  overflow: hidden;
  transition: color .5s var(--ease-out);
}
.contact__cta::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at center, var(--cyan-deep), var(--cyan) 70%);
  transform: scaleX(0); transform-origin: center;
  transition: transform .7s var(--ease-out);
  z-index: 0;
}
.contact__cta:hover { color: #04070d; }
.contact__cta:hover::before { transform: scaleX(1); }

.contact__cta-inner {
  position: relative; z-index: 1;
  display: inline-flex; align-items: center; gap: 28px;
}
.contact__cta-text { display: inline-flex; flex-direction: column; align-items: flex-start; gap: 4px; }
.contact__cta-text em {
  font-family: var(--font-en);
  font-size: clamp(22px, 2vw, 28px);
  letter-spacing: .3em;
  font-weight: 400;
}
.contact__cta-text i {
  font-family: var(--font-jp);
  font-size: 11.5px; letter-spacing: .2em;
  color: var(--ink-soft);
}
.contact__cta:hover .contact__cta-text i { color: rgba(4,7,13,0.7); }
.contact__cta-arrow { color: currentColor; display: inline-flex; }

.contact__info {
  margin: clamp(64px, 9vh, 112px) auto 0;
  max-width: 760px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  padding: 1px;
  border: 1px solid var(--line);
}
.contact__info li {
  background: var(--bg);
  padding: 24px 16px;
  display: flex; flex-direction: column; gap: 10px;
  text-align: left;
}
.contact__info-label {
  font-family: var(--font-en);
  font-size: 9.5px; letter-spacing: .38em;
  color: var(--cyan);
}
.contact__info-value {
  font-size: 12.5px; letter-spacing: .04em;
  color: var(--ink);
}
@media (max-width: 760px) { .contact__info { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .contact__info { grid-template-columns: 1fr; } }

/* ============== FOOTER ============== */
.site-footer {
  position: relative; z-index: 2;
  padding: clamp(80px, 12vh, 140px) var(--pad-x) 40px;
  background: var(--bg-2);
  border-top: 1px solid var(--line);
}
.site-footer__top {
  display: grid; grid-template-columns: auto 1fr;
  align-items: end; gap: 40px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--line);
}
.site-footer__nav {
  display: flex; flex-wrap: wrap;
  gap: 28px;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-en);
  font-size: 10.5px; letter-spacing: .28em;
  color: var(--ink-soft);
}
.site-footer__nav a { color: var(--ink-soft); transition: color .3s; }
.site-footer__nav a:hover { color: var(--cyan); }
.site-footer__mark {
  font-family: var(--font-min);
  font-size: clamp(64px, 9vw, 140px);
  margin: 0; line-height: .9;
  letter-spacing: .08em;
  color: var(--ink);
}
.site-footer__claim {
  margin: 0;
  font-family: var(--font-min);
  font-size: clamp(14px, 1.4vw, 18px);
  letter-spacing: .14em;
  color: var(--ink-soft);
  text-align: right;
}
.site-footer__bottom {
  padding-top: 28px;
  display: flex; gap: 24px; justify-content: space-between; flex-wrap: wrap;
  font-family: var(--font-en);
  font-size: 11px; letter-spacing: .22em;
  color: var(--ink-mute);
}
.site-footer__bottom span,
.site-footer__bottom small { display: inline-flex; }

/* ============== reveal helpers ============== */
[data-reveal] {
  opacity: 0; transform: translateY(28px);
  transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
}
[data-reveal].is-in { opacity: 1; transform: translateY(0); }

[data-split] .word, [data-split] .char {
  display: inline-block;
  opacity: 0; transform: translateY(110%);
  transition: opacity .9s var(--ease-out), transform .9s var(--ease-out);
}
[data-split].is-in .word, [data-split].is-in .char { opacity: 1; transform: translateY(0); }

/* ============== media tweaks ============== */
@media (max-width: 880px) {
  .section { padding-left: clamp(20px, 5vw, 32px); padding-right: clamp(20px, 5vw, 32px); }
  .section__index { margin-bottom: 40px; font-size: 10px; }
  .site-header { padding: 14px clamp(20px, 5vw, 32px); }
  .site-header__cta { padding: 8px 14px; font-size: 10.5px; }
  .site-header__cta span { font-size: 11px; }
  .logo-text__jp { font-size: 14px; }
  .logo-text__en { font-size: 8.5px; }
}

@media (max-width: 720px) {
  .hero {
    min-height: 100vh; padding-top: var(--header-h);
    padding-bottom: 64px;
    row-gap: 32px;
  }
  .hero__title { font-size: clamp(58px, 22vw, 110px); }
  .hero__title-line--center { padding-left: 10vw; }
  .hero__caption { grid-template-columns: 1fr; padding-top: 18px; }
  .hero__caption p { font-size: 12.5px; line-height: 1.85; }
  .hero__meta { font-size: 10px; letter-spacing: .25em; padding-top: 14px; }
  .hero__sub { margin-top: 18px; gap: 12px; }
  .hero__sub-jp { font-size: 18px; letter-spacing: .1em; }
  .hero__sub-en { font-size: 10.5px; letter-spacing: .18em; }

  .side-rail { display: none; }
  .hero__scroll { font-size: 9.5px; letter-spacing: .3em; }

  /* Philosophy */
  .philosophy__lead { width: auto !important; font-size: clamp(24px, 7vw, 38px); line-height: 1.45; }
  .philosophy__body { font-size: 13px; line-height: 1.95; }
  .philosophy__quote { grid-template-columns: 24px 1fr; gap: 14px; margin-top: 40px; padding-top: 24px; }
  .philosophy__quote span { font-size: 56px; }
  .philosophy__quote p { font-size: 14.5px; line-height: 1.8; }

  /* Pillars */
  .pillars__header { margin-bottom: 40px; }
  .pillars__header h2 { font-size: clamp(30px, 9vw, 48px); }
  .pillars__header p { font-size: 12.5px; line-height: 1.85; padding-bottom: 0; }
  .pillar { padding: 32px 0; gap: 20px; }
  .pillar__num { font-size: clamp(44px, 13vw, 68px); }
  .pillar__title { font-size: clamp(22px, 6.5vw, 32px); line-height: 1.35; }
  .pillar__body { font-size: 13px; line-height: 1.9; }
  .pillar__meta { font-size: 10.5px; padding-top: 16px; }
  .pillar__meta dd { font-size: 12px; }

  /* Services */
  .services__header { margin-bottom: 36px; }
  .services__header h2 { font-size: clamp(28px, 8vw, 44px); }
  .services__header p { font-size: 12.5px; line-height: 1.85; padding-bottom: 0; }
  .service { padding: 28px 22px; min-height: 0; gap: 12px; }
  .service__num { font-size: 10px; }
  .service__icon { width: 36px; height: 36px; }
  .service__en { font-size: 17px; letter-spacing: .08em; }
  .service__jp { font-size: 12px; }
  .service__desc { font-size: 12px; line-height: 1.75; padding-top: 12px; }
  .service__arrow { font-size: 18px; }

  /* Contact */
  .section--contact { padding-top: clamp(72px, 11vh, 120px); padding-bottom: clamp(72px, 11vh, 120px); }
  .contact { max-width: 100%; }
  .contact__title { font-size: clamp(36px, 11vw, 64px); line-height: 1.18; white-space: normal; }
  .contact__pre { font-size: 12px; letter-spacing: .15em; margin-bottom: 16px; }
  .contact__lead { font-size: 12.5px; line-height: 1.85; margin-top: 28px; max-width: 100%; }
  .contact__cta { margin-top: 40px; padding: 18px 32px; width: 100%; max-width: 360px; border-radius: 999px; }
  .contact__cta-inner { gap: 16px; width: 100%; justify-content: space-between; }
  .contact__cta-text em { font-size: 18px; letter-spacing: .2em; }
  .contact__cta-text i { font-size: 10.5px; letter-spacing: .15em; }
  .contact__cta-arrow svg { width: 26px; height: 26px; }
  .contact__info { margin-top: 56px; max-width: 100%; }
  .contact__info li { padding: 18px 16px; gap: 8px; }
  .contact__info-label { font-size: 9px; letter-spacing: .32em; }
  .contact__info-value { font-size: 12.5px; line-height: 1.6; }

  /* Footer */
  .site-footer { padding: 60px var(--pad-x) 32px; }
  .site-footer__top { grid-template-columns: 1fr; gap: 16px; padding-bottom: 32px; align-items: start; }
  .site-footer__mark { font-size: clamp(48px, 14vw, 80px); }
  .site-footer__claim { text-align: left; font-size: 13px; }
  .site-footer__nav { gap: 16px 22px; font-size: 10px; letter-spacing: .22em; padding: 22px 0; }
  .site-footer__bottom { padding-top: 22px; gap: 12px; font-size: 9.5px; letter-spacing: .2em; }

  /* Company info bar */
  .company-info { padding: 24px var(--pad-x); }
  .company-info dl { gap: 16px 24px; }
  .company-info dt { font-size: 9px; letter-spacing: .28em; }
  .company-info dd { font-size: 13px; }
}

@media (max-width: 480px) {
  .hero__title { font-size: clamp(48px, 22vw, 90px); }
  .hero__title-line--center { padding-left: 8vw; }
  .contact__cta { padding: 16px 22px; }
  .pillar__num { font-size: clamp(36px, 14vw, 56px); }
  .contact__info { grid-template-columns: 1fr; }
  .site-nav { display: none; }
}

@media (max-width: 450px) {
  :root { --pad-x: 16px; --header-h: 60px; }

  .site-header { padding: 12px 16px; gap: 12px; }
  .site-header__logo { gap: 8px; }
  .logo-mark svg { width: 18px; height: 18px; }
  .logo-text__jp { font-size: 12.5px; }
  .logo-text__en { font-size: 8px; letter-spacing: .25em; }
  .site-header__cta { padding: 7px 12px; gap: 6px; font-size: 10px; letter-spacing: .15em; border-radius: 999px; }
  .site-header__cta span { font-size: 10.5px; }
  .site-header__cta svg { width: 12px; height: 12px; }

  /* Hero */
  .hero { padding-bottom: 48px; row-gap: 24px; }
  .hero__title { font-size: clamp(44px, 21vw, 80px); line-height: 0.88; }
  .hero__title-line--center { padding-left: 6vw; }
  .hero__sub { gap: 8px; margin-top: 14px; }
  .hero__sub-jp { font-size: 16px; }
  .hero__sub-en { font-size: 9.5px; letter-spacing: .15em; }
  .hero__meta { font-size: 9px; letter-spacing: .2em; }
  .hero__caption p { font-size: 12px; }

  /* Sections */
  .section { padding-left: 16px; padding-right: 16px; padding-top: 72px; padding-bottom: 72px; }
  .section__index { font-size: 9.5px; letter-spacing: .3em; margin-bottom: 28px; gap: 10px; }
  .section__index i { width: 28px; }

  /* Philosophy */
  .philosophy__lead { font-size: clamp(22px, 7vw, 32px); line-height: 1.5; letter-spacing: .03em; }
  .philosophy__lead br { display: inline; }
  .philosophy__body { font-size: 12.5px; line-height: 1.9; }
  .philosophy__quote { grid-template-columns: 22px 1fr; gap: 10px; margin-top: 32px; padding-top: 20px; }
  .philosophy__quote span { font-size: 48px; }
  .philosophy__quote p { font-size: 13.5px; line-height: 1.75; }

  /* Pillars */
  .pillars__header { margin-bottom: 32px; }
  .pillars__header h2 { font-size: clamp(26px, 9vw, 40px); line-height: 1.2; }
  .pillars__header p { font-size: 11.5px; line-height: 1.8; }
  .pillar { padding: 28px 0; gap: 14px; }
  .pillar__num { font-size: clamp(34px, 13vw, 52px); }
  .pillar__tag { font-size: 9px; letter-spacing: .3em; }
  .pillar__title { font-size: clamp(20px, 6.5vw, 28px); }
  .pillar__body { font-size: 12.5px; line-height: 1.85; }
  .pillar__meta { font-size: 10px; padding-top: 12px; gap: 12px; }
  .pillar__meta dt { font-size: 8.5px; letter-spacing: .25em; }
  .pillar__meta dd { font-size: 11.5px; }

  /* Services */
  .services__header { margin-bottom: 28px; }
  .services__header h2 { font-size: clamp(26px, 8vw, 40px); }
  .services__header p { font-size: 11.5px; line-height: 1.8; }
  .service { padding: 22px 18px; gap: 10px; }
  .service__num { font-size: 9.5px; letter-spacing: .28em; }
  .service__icon { width: 32px; height: 32px; }
  .service__en { font-size: 15px; letter-spacing: .06em; }
  .service__jp { font-size: 11.5px; }
  .service__desc { font-size: 11.5px; line-height: 1.7; padding-top: 10px; }
  .service__arrow { font-size: 16px; }

  /* Contact */
  .section--contact { padding-top: 60px; padding-bottom: 60px; }
  .contact__title { font-size: clamp(28px, 8.5vw, 44px); line-height: 1.25; }
  .contact__title br { display: none; }
  .contact__pre { font-size: 11px; letter-spacing: .12em; margin-bottom: 12px; }
  .contact__lead { font-size: 12px; line-height: 1.8; margin-top: 22px; }
  .contact__cta { margin-top: 32px; padding: 14px 22px; width: 100%; max-width: 100%; }
  .contact__cta-inner { gap: 12px; width: 100%; justify-content: space-between; }
  .contact__cta-text em { font-size: 16px; letter-spacing: .18em; }
  .contact__cta-text i { font-size: 9.5px; letter-spacing: .12em; }
  .contact__cta-arrow svg { width: 22px; height: 22px; }
  .contact__info { margin-top: 40px; grid-template-columns: 1fr; }
  .contact__info li { padding: 14px 14px; gap: 6px; }
  .contact__info-label { font-size: 8.5px; letter-spacing: .28em; }
  .contact__info-value { font-size: 12px; }

  /* Footer */
  .site-footer { padding: 48px 16px 24px; }
  .site-footer__top { padding-bottom: 24px; gap: 12px; }
  .site-footer__mark { font-size: clamp(40px, 14vw, 64px); letter-spacing: .06em; }
  .site-footer__claim { font-size: 12px; line-height: 1.7; }
  .site-footer__nav { gap: 12px 18px; font-size: 9.5px; letter-spacing: .2em; padding: 18px 0; }
  .site-footer__bottom { padding-top: 16px; gap: 8px; font-size: 9px; letter-spacing: .18em; }

  /* Company info bar */
  .company-info { padding: 20px 16px; }
  .company-info dl { gap: 14px 18px; }
  .company-info dt { font-size: 8.5px; letter-spacing: .25em; }
  .company-info dd { font-size: 12px; }

  /* Loader */
  .loader__brand { font-size: 11px; letter-spacing: .3em; }
  .loader__counter { font-size: clamp(40px, 16vw, 64px); }
}

@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { animation: none !important; transition: none !important; }
  .hero__title-line .reveal { transform: none; }
  [data-reveal], [data-split] .word, [data-split] .char { opacity: 1; transform: none; }
}

/* ============== Company info bar (above footer) ============== */
.company-info {
  position: relative; z-index: 2;
  padding: 36px var(--pad-x);
  background: var(--bg-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.company-info dl {
  display: grid;
  grid-template-columns: repeat(4, auto);
  justify-content: space-between;
  gap: 28px 56px;
  margin: 0;
}
.company-info dl > div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.company-info dt {
  font-family: var(--font-en);
  font-size: 9.5px;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--cyan);
}
.company-info dd {
  margin: 0;
  font-family: var(--font-min);
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--ink);
  line-height: 1.6;
}
@media (max-width: 880px) {
  .company-info dl { grid-template-columns: 1fr 1fr; gap: 20px 24px; }
}
@media (max-width: 480px) {
  .company-info dl { grid-template-columns: 1fr; }
}


/* ============================================================
   Hamburger / Mobile menu drawer
   ============================================================ */
.menu-toggle {
  display: none;
  position: fixed;
  top: 14px;
  right: var(--pad-x);
  width: 44px; height: 44px;
  background: rgba(4,7,13,.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  cursor: pointer;
  padding: 0;
  z-index: 95;
  transition: border-color .3s, background .3s;
}
.menu-toggle:hover { border-color: var(--cyan); }
.menu-toggle__bars {
  position: absolute;
  left: 50%; top: 50%;
  width: 20px; height: 14px;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.menu-toggle__bars i {
  position: absolute;
  left: 0; right: 0;
  height: 1px;
  background: var(--ink);
  transition: transform .4s var(--ease-out), top .3s var(--ease-out), opacity .25s, background .3s;
}
.menu-toggle__bars i:nth-child(1) { top: 2px; }
.menu-toggle__bars i:nth-child(2) { top: 7px; }
.menu-toggle__bars i:nth-child(3) { top: 12px; }
.menu-toggle.is-open .menu-toggle__bars i:nth-child(1) { top: 7px; transform: rotate(45deg); background: var(--cyan); }
.menu-toggle.is-open .menu-toggle__bars i:nth-child(2) { opacity: 0; }
.menu-toggle.is-open .menu-toggle__bars i:nth-child(3) { top: 7px; transform: rotate(-45deg); background: var(--cyan); }

.menu-drawer {
  position: fixed;
  inset: 0;
  z-index: 88;
  background: rgba(4,7,13,.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: opacity .45s var(--ease-out), transform .55s var(--ease-out), visibility .45s;
  display: flex; flex-direction: column;
  padding: calc(var(--header-h) + 24px) clamp(20px, 6vw, 56px) 40px;
  overflow-y: auto;
}
.menu-drawer.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.menu-drawer__label {
  font-family: var(--font-en);
  font-size: 10px; letter-spacing: .35em;
  color: var(--cyan);
  text-transform: uppercase;
  margin: 0 0 12px;
}
.menu-drawer__nav {
  display: flex; flex-direction: column;
  gap: 0;
}
.menu-drawer__nav a {
  display: grid;
  grid-template-columns: 36px 1fr auto;
  align-items: baseline;
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-min);
  font-size: clamp(18px, 4.6vw, 26px);
  letter-spacing: .04em;
  color: var(--ink);
  position: relative;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s var(--ease-out), transform .6s var(--ease-out), color .3s, padding .3s;
}
.menu-drawer.is-open .menu-drawer__nav a {
  opacity: 1;
  transform: translateY(0);
}
.menu-drawer.is-open .menu-drawer__nav a:nth-child(1) { transition-delay: .08s; }
.menu-drawer.is-open .menu-drawer__nav a:nth-child(2) { transition-delay: .14s; }
.menu-drawer.is-open .menu-drawer__nav a:nth-child(3) { transition-delay: .2s; }
.menu-drawer.is-open .menu-drawer__nav a:nth-child(4) { transition-delay: .26s; }
.menu-drawer.is-open .menu-drawer__nav a:nth-child(5) { transition-delay: .32s; }
.menu-drawer.is-open .menu-drawer__nav a:nth-child(6) { transition-delay: .38s; }
.menu-drawer.is-open .menu-drawer__nav a:nth-child(7) { transition-delay: .44s; }
.menu-drawer.is-open .menu-drawer__nav a:nth-child(8) { transition-delay: .5s; }
.menu-drawer.is-open .menu-drawer__nav a:nth-child(9) { transition-delay: .56s; }
.menu-drawer__nav a:hover { color: var(--cyan); padding-left: 6px; }
.menu-drawer__nav a > em {
  font-family: var(--font-en);
  font-size: 10px; letter-spacing: .28em;
  color: var(--cyan);
  font-style: normal;
  font-weight: 500;
  align-self: start;
  margin-top: .85em;
}
.menu-drawer__nav a > i {
  font-family: var(--font-en);
  font-size: 9px; letter-spacing: .22em;
  color: var(--ink-mute);
  font-style: normal;
  text-transform: uppercase;
}
.menu-drawer__cta {
  margin-top: 28px;
  display: inline-flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 20px 26px;
  border: 1px solid var(--cyan);
  border-radius: 999px;
  background: var(--cyan-deep);
  font-family: var(--font-en);
  font-size: 11px; letter-spacing: .3em;
  color: var(--ink);
  text-transform: uppercase;
  align-self: stretch;
  text-align: left;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s var(--ease-out) .55s, transform .6s var(--ease-out) .55s, background .3s, color .3s;
}
.menu-drawer.is-open .menu-drawer__cta {
  opacity: 1;
  transform: translateY(0);
}
.menu-drawer__cta:hover { background: var(--cyan); color: var(--bg); }
.menu-drawer__cta-text {
  display: inline-flex; flex-direction: column; gap: 4px;
}
.menu-drawer__cta strong {
  font-family: var(--font-min);
  font-size: 15px;
  letter-spacing: .06em;
  font-weight: 500;
  color: var(--ink);
}
.menu-drawer__cta:hover strong { color: var(--bg); }
.menu-drawer__cta small {
  font-family: var(--font-en);
  font-size: 9.5px; letter-spacing: .25em;
  color: var(--cyan);
}
.menu-drawer__cta:hover small { color: var(--bg); }
.menu-drawer__contact {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 20px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s var(--ease-out) .62s, transform .6s var(--ease-out) .62s;
}
.menu-drawer.is-open .menu-drawer__contact {
  opacity: 1;
  transform: translateY(0);
}
.menu-drawer__contact > div { display: flex; flex-direction: column; gap: 4px; }
.menu-drawer__contact dt {
  font-family: var(--font-en);
  font-size: 9px; letter-spacing: .28em;
  color: var(--cyan);
  text-transform: uppercase;
  margin: 0;
}
.menu-drawer__contact dd {
  margin: 0;
  font-family: var(--font-min);
  font-size: 13px;
  color: var(--ink);
  letter-spacing: .04em;
  line-height: 1.5;
}

body.menu-open { overflow: hidden; }

@media (max-width: 880px) {
  .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .site-header { grid-template-columns: auto 1fr; padding-right: calc(var(--pad-x) + 60px); }
  .site-header > .site-nav { display: none; }
  .site-header > .site-header__cta { display: none; }
}
@media (min-width: 881px) {
  .menu-drawer, .menu-toggle { display: none !important; }
}