@charset "UTF-8";

:root {
  --red: #cb1d1c;
  --ink: #231815;
  --ink-soft: #5b5552;
  --paper: #f7f5f0;
  --white: #ffffff;
  --night: #0c1330;
  --dusk: #f39a4a;
  --dawn: #f5e3d2;
  --line: rgba(35, 24, 21, .12);

  --font-ja: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --font-mincho: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-en: "Cormorant Garamond", Cambria, Georgia, serif;

  --ease: cubic-bezier(.22, 1, .36, 1);
  --header-h: 88px;
  --container: 1200px;
  --gutter: 48px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) - 10px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-ja);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: .04em;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.is-locked { overflow: hidden; }

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, p, figure, dl, dd { margin: 0; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.sp-only { display: none; }

.loader {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  background: var(--paper);
  transition: opacity .8s var(--ease) .2s, visibility .8s .2s;
}
.loader__inner { display: grid; justify-items: center; gap: 28px; }
.loader__logo {
  width: 220px;
  opacity: 0;
  transform: translateY(12px);
  animation: loaderLogo 1s var(--ease) .1s forwards;
}
.loader__bar {
  width: 160px;
  height: 1px;
  background: var(--line);
  overflow: hidden;
}
.loader__bar span {
  display: block;
  height: 100%;
  background: var(--red);
  transform-origin: left;
  transform: scaleX(0);
  animation: loaderBar 1.3s var(--ease) .2s forwards;
}
.is-loaded .loader { opacity: 0; visibility: hidden; }

@keyframes loaderLogo { to { opacity: 1; transform: none; } }
@keyframes loaderBar { to { transform: scaleX(1); } }

.progress {
  position: fixed;
  top: 0; left: 0;
  z-index: 200;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--red), var(--dusk));
  transform-origin: left;
  transform: scaleX(0);
}

.cursor {
  position: fixed;
  top: 0; left: 0;
  z-index: 999;
  width: 36px; height: 36px;
  margin: -18px 0 0 -18px;
  border: 1px solid rgba(203, 29, 28, .7);
  border-radius: 50%;
  pointer-events: none;
  opacity: 0;
  transition: width .3s var(--ease), height .3s var(--ease), margin .3s var(--ease),
              background-color .3s, opacity .3s;
  mix-blend-mode: multiply;
}
.cursor.is-visible { opacity: 1; }
.cursor.is-hover {
  width: 72px; height: 72px;
  margin: -36px 0 0 -36px;
  background: rgba(203, 29, 28, .1);
}
@media (hover: none), (pointer: coarse) { .cursor { display: none; } }

.header {
  position: fixed;
  top: 0; left: 0;
  z-index: 100;
  width: 100%;
  height: var(--header-h);
  transition: height .4s var(--ease), background-color .4s, box-shadow .4s, transform .5s var(--ease);
}
.header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
}
.header__logo { display: grid; }
.header__logo img {
  grid-area: 1 / 1;
  width: 150px;
  transition: opacity .4s, width .4s var(--ease);
}
.header__logo .logo-color { opacity: 0; }
.header.is-scrolled .header__logo .logo-color { opacity: 1; }
.header.is-scrolled .header__logo .logo-light { opacity: 0; }

.header.is-scrolled {
  --header-h: 68px;
  background: rgba(247, 245, 240, .82);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  box-shadow: 0 1px 0 var(--line);
}
.header.is-scrolled .header__logo img { width: 120px; }
.header.is-hidden { transform: translateY(-100%); }


.header.is-menu-open {
  transform: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.nav__list { display: flex; align-items: center; gap: 36px; }
.nav__link {
  position: relative;
  display: grid;
  justify-items: center;
  font-family: var(--font-en);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .16em;
  line-height: 1.3;
  color: var(--white);
  transition: color .3s;
}
.nav__link span {
  font-family: var(--font-ja);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .1em;
  opacity: .7;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -8px;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--red);
  transform: translateX(-50%) scale(0);
  transition: transform .4s var(--ease);
}
.nav__link:hover::after,
.nav__link.is-active::after { transform: translateX(-50%) scale(1); }

.nav__link--cta {
  padding: 10px 22px;
  border: 1px solid rgba(255, 255, 255, .6);
  border-radius: 999px;
  transition: background-color .3s, color .3s, border-color .3s;
}
.nav__link--cta::after { display: none; }
.nav__link--cta:hover { background: var(--white); color: var(--ink); }

.header.is-scrolled .nav__link { color: var(--ink); }
.header.is-scrolled .nav__link--cta { border-color: var(--red); background: var(--red); color: var(--white); }
.header.is-scrolled .nav__link--cta:hover { background: var(--ink); border-color: var(--ink); }

.burger { display: none; }

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 18px;
  padding: 18px 32px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .1em;
  overflow: hidden;
  isolation: isolate;
  transition: color .4s var(--ease);
}
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .5s var(--ease);
}
.btn:hover::before { transform: scaleX(1); transform-origin: left; }

.btn__arrow {
  position: relative;
  width: 28px; height: 1px;
  background: currentColor;
  transition: width .4s var(--ease);
}
.btn__arrow::after {
  content: "";
  position: absolute;
  right: 0; top: -3px;
  width: 7px; height: 7px;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
  transform: rotate(45deg);
}
.btn:hover .btn__arrow { width: 40px; }

.btn--line { border: 1px solid var(--ink); }
.btn--line::before { background: var(--ink); }
.btn--line:hover { color: var(--white); }

.btn--solid { background: var(--red); color: var(--white); }
.btn--solid::before { background: var(--ink); }

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1.1s var(--ease), transform 1.1s var(--ease);
  transition-delay: var(--delay, 0s);
}
.reveal.is-in { opacity: 1; transform: none; }

.tilt.is-in {
  transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) translateY(var(--ty, 0px));
}

.reveal--mask {
  opacity: 1;
  transform: none;
}
.reveal--mask > img {
  clip-path: inset(0 0 100% 0);
  transition: clip-path 1.4s var(--ease);
}
.reveal--mask.is-in > img { clip-path: inset(0 0 0 0); }

.section { position: relative; padding: 160px 0; }

.sec-head { margin-bottom: 72px; }
.sec-head__en {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-family: var(--font-en);
  font-style: italic;
  font-weight: 500;
  font-size: 22px;
  letter-spacing: .12em;
  color: var(--red);
}
.sec-head__en::before {
  content: "";
  width: 40px; height: 1px;
  background: currentColor;
  transform: translateY(-5px);
}
.sec-head__en small { font-size: 16px; color: var(--ink-soft); }
.sec-head__ja {
  margin-top: 18px;
  font-family: var(--font-mincho);
  font-weight: 600;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.5;
  letter-spacing: .08em;
}
.sec-head__lead {
  margin-top: 24px;
  max-width: 640px;
  color: var(--ink-soft);
}
.sec-head--light .sec-head__ja { color: var(--white); }
.sec-head--light .sec-head__en { color: #ffb38a; }

.hero {
  position: relative;
  height: 100vh;
  min-height: 680px;
  display: flex;
  align-items: center;
  color: var(--white);
  overflow: hidden;
  background: var(--night);
}
.hero__bg {
  position: absolute;
  inset: -8% 0 0 0;
  will-change: transform;
  inset: 0;
}
.hero__bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: 60% center;
  transform: scale(1.15);
  animation: heroZoom 14s var(--ease) forwards;
  animation-play-state: paused;
}
.is-loaded .hero__bg img { animation-play-state: running; }
@keyframes heroZoom { to { transform: scale(1.02); } }

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  opacity: .55;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(8, 12, 36, .78) 0%, rgba(8, 12, 36, .35) 50%, rgba(8, 12, 36, 0) 80%),
    linear-gradient(0deg, rgba(8, 12, 36, .55) 0%, rgba(8, 12, 36, 0) 40%);
}

.hero__content { position: relative; z-index: 2; }
.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-en);
  font-style: italic;
  font-size: 20px;
  letter-spacing: .2em;
  color: #ffc9a3;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 1s var(--ease) 1.4s, transform 1s var(--ease) 1.4s;
}
.hero__eyebrow .line {
  width: 56px; height: 1px;
  background: currentColor;
}
.hero__title {
  margin-top: 28px;
  font-family: var(--font-mincho);
  font-weight: 600;
  font-size: clamp(40px, 5.4vw, 76px);
  line-height: 1.45;
  letter-spacing: .08em;
  text-shadow: 0 4px 30px rgba(0, 0, 0, .3);
}
.hero__title .split { display: block; }
.hero__title em {
  font-family: var(--font-en);
  font-style: italic;
  font-weight: 600;
  margin: 0 .08em;
}
.hero__title em .char {
  background: linear-gradient(160deg, #ffd6a8, var(--dusk) 60%, #ff7a6b);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-right: .04em;
}
.hero__title .char {
  display: inline-block;
  opacity: 0;
  transform: translateY(.6em) rotate(6deg);
  filter: blur(6px);
  transition: opacity .9s var(--ease), transform .9s var(--ease), filter .9s var(--ease);
  transition-delay: calc(var(--i) * 45ms + .6s);
}
.hero__lead {
  margin-top: 32px;
  font-size: 17px;
  line-height: 2.1;
  letter-spacing: .1em;
  color: rgba(255, 255, 255, .88);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 1s var(--ease) 1.8s, transform 1s var(--ease) 1.8s;
}

.is-loaded .hero__eyebrow,
.is-loaded .hero__lead { opacity: 1; transform: none; }
.is-loaded .hero__title .char { opacity: 1; transform: none; filter: none; }

.hero__scroll {
  position: absolute;
  left: 50%; bottom: 36px;
  z-index: 2;
  display: grid;
  justify-items: center;
  gap: 10px;
  transform: translateX(-50%);
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: .3em;
}
.hero__scroll i {
  position: relative;
  width: 1px; height: 64px;
  background: rgba(255, 255, 255, .3);
  overflow: hidden;
}
.hero__scroll i::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--white);
  animation: scrollLine 2.2s var(--ease) infinite;
}
@keyframes scrollLine {
  0% { transform: translateY(-100%); }
  60%, 100% { transform: translateY(100%); }
}

.hero__vertical {
  position: absolute;
  right: 40px; bottom: 40px;
  z-index: 2;
  writing-mode: vertical-rl;
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: .3em;
  color: rgba(255, 255, 255, .6);
}

.mission { background: var(--paper); overflow: hidden; }
.mission::before {
  content: "MISSION";
  position: absolute;
  top: 90px; right: -20px;
  font-family: var(--font-en);
  font-style: italic;
  font-size: 220px;
  line-height: 1;
  color: rgba(35, 24, 21, .06);
  pointer-events: none;
}

.business::before,
.vision::before,
.challenge::after,
.contact::before {
  position: absolute;
  font-family: var(--font-en);
  font-style: italic;
  font-size: 220px;
  line-height: 1;
  white-space: nowrap;
  pointer-events: none;
}
.business::before { content: "BUSINESS"; top: 125px; left: -20px; color: rgba(35, 24, 21, .06); }
.vision::before { content: "MESSAGE"; top: 90px; right: -20px; color: rgba(35, 24, 21, .06); }
.challenge::after { content: "CHALLENGE"; z-index: 1; top: 90px; left: -20px; color: rgba(255, 255, 255, .11); }
.contact::before { content: "CONTACT"; top: 90px; right: -20px; color: rgba(255, 255, 255, .07); }

.mission__intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-bottom: 120px;
}
.lead-text {
  font-family: var(--font-mincho);
  font-size: 22px;
  line-height: 2.2;
  letter-spacing: .08em;
  margin-bottom: 48px;
}
.lead-text strong {
  font-weight: 600;
  background: linear-gradient(transparent 62%, rgba(243, 154, 74, .35) 62%);
}
.mission__photo {
  position: relative;
  border-radius: 4px 120px 4px 4px;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  max-height: 620px;
  justify-self: end;
  width: 100%;
}
.mission__photo img {
  width: 100%; height: 115%;
  object-fit: cover;
  object-position: center 30%;
}

.steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.steps::before {
  content: "";
  position: absolute;
  top: 88px; left: 12%; right: 12%;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--line) 0 6px, transparent 6px 12px);
}
.step {
  position: relative;
  padding: 44px 30px 40px;
  background: var(--white);
  border-radius: 20px;
  box-shadow: 0 10px 40px rgba(35, 24, 21, .05);
  transition: box-shadow .5s var(--ease), transform .6s var(--ease), opacity 1.1s var(--ease);
  transition-delay: var(--delay, 0s);
}
.step::after {
  content: "";
  position: absolute;
  left: 30px; right: 30px; bottom: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: var(--c);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .6s var(--ease);
}
.step:hover { box-shadow: 0 24px 60px rgba(35, 24, 21, .12); }
.step:hover::after { transform: scaleX(1); }

.step__num {
  position: absolute;
  top: 22px; right: 26px;
  font-family: var(--font-en);
  font-style: italic;
  font-size: 18px;
  color: var(--c);
}
.step__icon {
  width: 88px; height: 88px;
  display: grid;
  place-items: center;
  margin-bottom: 28px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--c) 14%, white);
  transition: transform .6s var(--ease);
}
.step__icon img { width: 42px; }
.step:hover .step__icon { transform: rotate(-8deg) scale(1.08); }
.step__title {
  font-family: var(--font-en);
  font-style: italic;
  font-weight: 600;
  font-size: 30px;
  line-height: 1.2;
  letter-spacing: .04em;
}
.step__ja {
  margin: 4px 0 16px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--c);
  filter: brightness(.85);
}
.step__desc { font-size: 14px; line-height: 1.9; color: var(--ink-soft); }

.vision {
  color: var(--ink);
  background: linear-gradient(180deg, var(--white) 0%, #fbf5ee 40%, var(--dawn) 100%);
  overflow: clip;
}
.vision__glow {
  position: absolute;
  top: 50%; right: -15%;
  width: 70vw; height: 70vw;
  max-width: 900px; max-height: 900px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(243, 154, 74, .35) 0%, rgba(203, 29, 28, .12) 40%, transparent 70%);
  transform: translateY(-50%);
  filter: blur(20px);
  animation: glow 10s ease-in-out infinite alternate;
}
@keyframes glow {
  from { transform: translate(0, -50%) scale(1); }
  to   { transform: translate(-8%, -42%) scale(1.15); }
}
.vision__inner {
  position: relative;
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 60px;
}
.vision__side { position: sticky; top: 120px; align-self: start; }
.vision .sec-head { margin-bottom: 48px; }

.vision__portrait {
  position: relative;
  max-width: min(400px, (100svh - 430px) * .8);
  min-width: 260px;
  isolation: isolate;
}
.vision__portrait::before {
  content: "";
  position: absolute;
  left: 50%; top: 8%;
  z-index: -1;
  width: 86%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, rgba(255, 201, 163, .55), rgba(243, 154, 74, .25) 45%, rgba(203, 29, 28, .08) 70%, transparent 72%);
  transform: translateX(-50%);
  animation: portraitGlow 6s ease-in-out infinite alternate;
}
.vision__portrait::after {
  content: "";
  position: absolute;
  left: 50%; top: 4%;
  z-index: -1;
  width: 94%;
  aspect-ratio: 1;
  border: 1px solid rgba(203, 29, 28, .16);
  border-radius: 50%;
  transform: translateX(-50%);
}
@keyframes portraitGlow {
  from { transform: translateX(-50%) scale(1); }
  to   { transform: translateX(-50%) scale(1.05); }
}
.vision__portrait img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: 50% 0;
  -webkit-mask-image: linear-gradient(180deg, #000 72%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 72%, transparent 100%);
}
.vision__portrait figcaption {
  position: absolute;
  left: 0; bottom: 6%;
  display: grid;
  gap: 2px;
  padding: 12px 20px;
  background: rgba(255, 255, 255, .72);
  border-left: 2px solid var(--dusk);
  box-shadow: 0 10px 30px rgba(120, 70, 30, .08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.vision__portrait-role {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--red);
}
.vision__portrait figcaption .vision__portrait-name {
  display: block;
  width: 168px;
  height: auto;
  aspect-ratio: auto;
  margin-top: 4px;
  -webkit-mask-image: none;
  mask-image: none;
}
.vision__message p {
  font-family: var(--font-mincho);
  font-size: 17px;
  line-height: 2.3;
  letter-spacing: .08em;
}
.vision__message p + p { margin-top: 32px; }
.vision__message .is-key {
  font-size: 21px;
  color: var(--ink);
  padding-left: 24px;
  border-left: 2px solid var(--dusk);
}

.business { background: var(--white); padding-top: 0; overflow: hidden; }

.marquee {
  padding: 36px 0;
  margin-bottom: 60px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  white-space: nowrap;
}
.marquee__track {
  display: flex;
  width: max-content;
  animation: marquee var(--marquee-duration, 36s) linear infinite;
}
.marquee__group { display: flex; flex-shrink: 0; }
.marquee__track span {
  padding: 0 40px;
  font-family: var(--font-en);
  font-style: italic;
  font-size: 64px;
  line-height: 1.1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(35, 24, 21, .25);
}
.marquee__track span:nth-child(odd) { color: rgba(203, 29, 28, .08); }
@keyframes marquee { to { transform: translateX(calc(-1 * var(--marquee-shift, 50%))); } }

.services { border-top: 1px solid var(--line); }
.service {
  position: relative;
  display: grid;
  grid-template-columns: 120px 1fr 60px;
  align-items: center;
  gap: 32px;
  padding: 48px 24px;
  border-bottom: 1px solid var(--line);
  isolation: isolate;
  transition: padding .5s var(--ease), opacity 1.1s var(--ease), transform 1.1s var(--ease);
  transition-delay: var(--delay, 0s);
}
.service::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--paper);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform .5s var(--ease);
}
.service:hover::before { transform: scaleY(1); }
.service:hover { padding-left: 48px; }

.service__no {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 44px;
  color: var(--red);
  line-height: 1;
}
.service__title {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-family: var(--font-mincho);
  font-weight: 600;
  font-size: 26px;
  letter-spacing: .08em;
}
.service__title small {
  font-family: var(--font-en);
  font-style: italic;
  font-weight: 500;
  font-size: 16px;
  color: var(--ink-soft);
  letter-spacing: .08em;
}
.service__desc { margin-top: 10px; color: var(--ink-soft); font-size: 15px; }
.service__arrow {
  width: 56px; height: 56px;
  border: 1px solid var(--line);
  border-radius: 50%;
  position: relative;
  transition: background-color .4s, border-color .4s, transform .5s var(--ease);
}
.service__arrow::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 10px; height: 10px;
  border-top: 1px solid var(--ink);
  border-right: 1px solid var(--ink);
  transform: translate(-70%, -50%) rotate(45deg);
  transition: border-color .4s;
}
.service:hover .service__arrow { background: var(--red); border-color: var(--red); transform: rotate(-45deg); }
.service:hover .service__arrow::after { border-color: var(--white); }

.challenge {
  padding-top: 180px;
  background: var(--night);
  overflow: hidden;
}
.challenge__visual {
  position: relative;
  padding-bottom: 88px;
  color: rgba(255, 255, 255, .9);
}
.challenge__bg { position: absolute; inset: 0; overflow: hidden; }
.challenge__bg img {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 118%;
  object-fit: cover;
  object-position: 60% 45%;
}
.challenge__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, var(--dawn) 0%, rgba(245, 227, 210, .55) 5%, rgba(245, 227, 210, 0) 14%),
    linear-gradient(90deg, rgba(12, 19, 48, .72) 0%, rgba(12, 19, 48, .38) 48%, rgba(12, 19, 48, 0) 78%),
    linear-gradient(180deg, rgba(12, 19, 48, 0) 10%, rgba(12, 19, 48, .15) 60%, rgba(12, 19, 48, .7) 92%, var(--night) 100%);
}

.challenge .container { position: relative; z-index: 2; }
.challenge__title { text-shadow: 0 2px 24px rgba(12, 19, 48, .35); }
.challenge__title span {
  display: inline-block;
  text-shadow: none;
  background: linear-gradient(100deg, #ffe0b0 0%, #ffb27a 55%, #ff8a6b 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.challenge__message {
  max-width: 820px;
  margin-top: -24px;
  text-shadow: 0 1px 12px rgba(12, 19, 48, .45);
}
.challenge__message p { font-size: 17px; line-height: 2.2; }
.challenge__message p + p { margin-top: 24px; }
.challenge__message strong {
  font-family: var(--font-mincho);
  font-size: 20px;
  font-weight: 600;
  color: var(--white);
}

.pillars {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr 1.4fr;
  gap: 24px;
}
.pillar {
  position: relative;
  padding: 44px 36px;
  background: rgba(255, 255, 255, 88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: 24px;
  overflow: hidden;
  transition: box-shadow .5s var(--ease), transform .6s var(--ease), opacity 1.1s var(--ease);
  transition-delay: var(--delay, 0s);
}
.pillar::before {
  content: "";
  position: absolute;
  top: -60px; right: -60px;
  width: 180px; height: 180px;
  border-radius: 50%;
  background: var(--c);
  opacity: .12;
  transition: transform .8s var(--ease);
}
.pillar:hover { box-shadow: 0 30px 60px rgba(40, 70, 120, .14); }
.pillar:hover::before { transform: scale(1.6); }
.pillar__icon { width: 64px; margin-bottom: 28px; }
.pillar__title {
  font-family: var(--font-en);
  font-style: italic;
  font-weight: 600;
  font-size: 34px;
  line-height: 1.2;
  margin-bottom: 14px;
}
.pillar__title span { color: var(--red); font-style: normal; }
.pillar__desc { font-size: 15px; color: var(--ink-soft); }
.pillar__note {
  display: inline-block;
  margin-top: 20px;
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--red);
  border: 1px solid rgba(203, 29, 28, .4);
  border-radius: 999px;
}

.contact {
  color: rgba(255, 255, 255, .85);
  background:
    radial-gradient(ellipse at 10% 0%, rgba(243, 154, 74, .25), transparent 55%),
    linear-gradient(160deg, var(--night) 0%, #141a3d 100%);
  overflow: hidden;
}
.contact__inner {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 80px;
  align-items: start;
}
.contact__lead { margin-bottom: 48px; }
.contact__list div {
  display: flex;
  gap: 24px;
  padding: 16px 0;
  border-top: 1px solid rgba(255, 255, 255, .15);
}
.contact__list div:last-child { border-bottom: 1px solid rgba(255, 255, 255, .15); }
.contact__en {
  display: block;
  font-family: var(--font-en);
  font-style: italic;
  font-size: 15px;
  letter-spacing: .08em;
  color: rgba(255, 255, 255, .6);
}
.contact__list dd a { transition: color .3s; }
.contact__list dd a:hover { color: #ffb38a; }
.contact__list dt {
  flex-shrink: 0;
  width: 80px;
  font-family: var(--font-en);
  font-style: italic;
  color: #ffb38a;
}

.mail {
  position: relative;
  padding: 56px;
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 28px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  overflow: hidden;
}
.mail::before {
  content: "";
  position: absolute;
  top: -120px; right: -120px;
  width: 320px; height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(243, 154, 74, .28), transparent 70%);
  pointer-events: none;
}

.mail__label {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .12em;
  color: #ffb38a;
}
.mail__icon {
  position: relative;
  width: 26px; height: 18px;
  border: 1.5px solid currentColor;
  border-radius: 3px;
}
.mail__icon::before {
  content: "";
  position: absolute;
  left: 50%; top: -6px;
  width: 14px; height: 14px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateX(-50%) scaleY(.7) rotate(45deg);
}

.mail__address {
  position: relative;
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  margin: 20px 0 40px;
  padding-bottom: 10px;
  font-family: var(--font-en);
  font-style: italic;
  font-weight: 600;
  font-size: clamp(28px, 3.2vw, 44px);
  line-height: 1.2;
  letter-spacing: .02em;
  color: var(--white);
  word-break: break-all;
}
.mail__address::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: linear-gradient(90deg, var(--dusk), var(--red));
  transform: scaleX(.25);
  transform-origin: left;
  transition: transform .6s var(--ease);
}
.mail__address:hover::after { transform: scaleX(1); }
.mail__at {
  margin: 0 .06em;
  color: var(--dusk);
  transition: transform .6s var(--ease);
  display: inline-block;
}
.mail__address:hover .mail__at { transform: rotate(360deg); }

.mail__actions { display: flex; flex-wrap: wrap; gap: 14px; }
.btn--ghost {
  border: 1px solid rgba(255, 255, 255, .35);
  color: var(--white);
}
.btn--ghost::before { background: var(--white); }
.btn--ghost:hover { color: var(--ink); }
.btn--ghost.is-copied { border-color: #a8f0c6; color: #a8f0c6; }
.btn--ghost.is-copied::before { transform: scaleX(0); }

.mail__toast {
  min-height: 1.6em;
  margin-top: 12px;
  font-size: 13px;
  color: #a8f0c6;
}

.mail__guide {
  margin-top: 28px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, .12);
}
.mail__guide-title {
  margin-bottom: 18px;
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
}
.mail__checklist {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 28px;
}
.mail__checklist li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  font-size: 14px;
  background: rgba(255, 255, 255, .05);
  border-radius: 12px;
}
.mail__checklist span {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 16px;
  color: var(--dusk);
}
.mail__topics-title {
  margin-bottom: 12px;
  font-size: 12px;
  letter-spacing: .12em;
  color: rgba(255, 255, 255, .6);
}
.mail__topics { display: flex; flex-wrap: wrap; gap: 8px; }
.mail__topics li {
  padding: 6px 14px;
  font-size: 12px;
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 999px;
  color: rgba(255, 255, 255, .75);
}

.footer { padding: 72px 0 40px; color: rgba(255, 255, 255, .78); background: #080d24; }
.footer__inner {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 40px;
}
.footer__logo img { width: 160px; }
.footer__nav {
  display: flex;
  justify-content: flex-end;
  gap: 36px;
  font-family: var(--font-en);
  font-weight: 600;
  letter-spacing: .16em;
  font-size: 14px;
}
.footer__nav a { transition: color .3s; }
.footer__nav a:hover { color: #ffb38a; }
.footer__copy {
  grid-column: 1 / -1;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  font-size: 12px;
  color: rgba(255, 255, 255, .5);
  letter-spacing: .1em;
}

.totop {
  position: fixed;
  right: 32px; bottom: 32px;
  z-index: 90;
  width: 56px; height: 56px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity .4s, transform .4s var(--ease), background-color .3s;
}
.totop span {
  width: 10px; height: 10px;
  border-top: 1px solid var(--white);
  border-left: 1px solid var(--white);
  transform: translateY(3px) rotate(45deg);
}
.totop.is-show { opacity: 1; transform: none; pointer-events: auto; }
.totop:hover { background: var(--red); }

@media (max-width: 1024px) {
  :root { --gutter: 32px; }
  .nav__list { gap: 22px; }
  .nav__link { font-size: 13px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .steps::before { display: none; }
  .mission__intro { gap: 48px; }
  .pillars { grid-template-columns: 1fr 1fr; }
  .pillar--wide { grid-column: 1 / -1; }
  .vision__inner, .contact__inner { grid-template-columns: 1fr; gap: 40px; }
  .vision__side {
    position: static;
    display: grid;
    grid-template-columns: 300px 1fr;
    align-items: center;
    gap: 48px;
  }
  .vision .sec-head { order: 2; margin-bottom: 0; }
  .vision__portrait { order: 1; width: 100%; min-width: 0; max-width: 300px; }
}

@media (max-width: 768px) {
  :root { --gutter: 22px; --header-h: 64px; }
  body { font-size: 15px; }
  .sp-only { display: inline; }
  .pc-only { display: none; }

  .section { padding: 96px 0; }
  .sec-head { margin-bottom: 44px; }
  .sec-head__en { font-size: 18px; }
  .sec-head__en::before { width: 24px; }
  .sec-head__ja { font-size: 28px; }

  .header__inner { padding: 0 20px; }
  .header__logo img { width: 110px; }
  .header.is-scrolled { --header-h: 58px; }
  .header.is-scrolled .header__logo img { width: 96px; }

  .burger {
    position: relative;
    z-index: 110;
    display: block;
    width: 44px; height: 44px;
  }
  .burger span {
    position: absolute;
    left: 10px;
    width: 24px; height: 1.5px;
    background: var(--white);
    transition: transform .5s var(--ease), opacity .3s, background-color .3s, width .4s var(--ease);
  }
  .burger span:nth-child(1) { top: 15px; }
  .burger span:nth-child(2) { top: 21px; width: 16px; }
  .burger span:nth-child(3) { top: 27px; }
  .header.is-scrolled .burger span { background: var(--ink); }
  .burger.is-open span { background: var(--white) !important; }
  .burger.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .burger.is-open span:nth-child(2) { opacity: 0; }
  .burger.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  .nav {
    position: fixed;
    inset: 0;
    z-index: 105;
    display: grid;
    place-items: center;
    background: linear-gradient(160deg, var(--night) 0%, #2a2350 100%);
    clip-path: circle(0 at calc(100% - 42px) 32px);
    transition: clip-path .8s var(--ease);
    visibility: hidden;
  }
  .nav.is-open { clip-path: circle(150% at calc(100% - 42px) 32px); visibility: visible; }
  .nav__list { flex-direction: column; gap: 26px; }
  .nav__link,
  .header.is-scrolled .nav__link {
    font-size: 28px;
    color: var(--white);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity .6s var(--ease), transform .6s var(--ease);
  }
  .nav__link span { font-size: 11px; margin-top: 4px; }
  .nav.is-open .nav__link { opacity: 1; transform: none; }
  .nav.is-open li:nth-child(1) .nav__link { transition-delay: .25s; }
  .nav.is-open li:nth-child(2) .nav__link { transition-delay: .3s; }
  .nav.is-open li:nth-child(3) .nav__link { transition-delay: .35s; }
  .nav.is-open li:nth-child(4) .nav__link { transition-delay: .4s; }
  .nav.is-open li:nth-child(5) .nav__link { transition-delay: .45s; }
  .nav.is-open li:nth-child(6) .nav__link { transition-delay: .5s; }
  .nav__link--cta,
  .header.is-scrolled .nav__link--cta {
    margin-top: 12px;
    padding: 14px 40px;
    background: var(--red);
    border-color: var(--red);
  }

  .hero { height: 100svh; min-height: 600px; align-items: flex-end; padding-bottom: 140px; }
  .hero__bg img { object-position: 72% center; }
  .hero__overlay {
    background: linear-gradient(0deg, rgba(8, 12, 36, .85) 0%, rgba(8, 12, 36, .35) 55%, rgba(8, 12, 36, .15) 100%);
  }
  .hero__eyebrow { font-size: 15px; gap: 10px; }
  .hero__eyebrow .line { width: 28px; }
  .hero__title { margin-top: 16px; font-size: 32px; line-height: 1.55; }
  .hero__lead { margin-top: 20px; font-size: 13px; line-height: 2; }
  .hero__vertical { display: none; }
  .hero__scroll { bottom: 24px; }
  .hero__scroll i { height: 44px; }

  .mission::before { font-size: 96px; top: 60px; right: -10px; }
  .business::before, .vision::before, .challenge::after, .contact::before { font-size: 96px; top: 60px; }
  .business::before { top: 68px; left: -10px; }
  .vision::before, .contact::before { right: -10px; }
  .challenge::after { left: -10px; }
  .mission__intro { grid-template-columns: 1fr; gap: 40px; margin-bottom: 64px; }
  .lead-text { font-size: 17px; line-height: 2.1; margin-bottom: 32px; }
  .mission__photo { aspect-ratio: 4 / 4.4; border-radius: 4px 64px 4px 4px; }
  .steps { grid-template-columns: 1fr; gap: 16px; }
  .step {
    display: grid;
    grid-template-columns: 64px 1fr;
    column-gap: 20px;
    padding: 26px 22px;
    border-radius: 16px;
  }
  .step__icon { grid-row: 1 / 4; width: 64px; height: 64px; margin: 0; }
  .step__icon img { width: 30px; }
  .step__title { font-size: 24px; }
  .step__ja { margin: 0 0 8px; }
  .step__num { top: 18px; right: 20px; font-size: 15px; }

  .vision__side { grid-template-columns: 1fr; gap: 28px; }
  .vision .sec-head, .vision__portrait { order: 0; }
  .vision__portrait { width: 100%; min-width: 0; max-width: 300px; margin: 0 auto; }
  .vision__portrait figcaption { padding: 10px 16px; }
  .vision__portrait figcaption .vision__portrait-name { width: 140px; }
  .vision__message p { font-size: 15px; line-height: 2.1; }
  .vision__message p + p { margin-top: 24px; }
  .vision__message .is-key { font-size: 17px; padding-left: 16px; }

  .business { padding-top: 0; }
  .marquee { padding: 20px 0; margin-bottom: 24px; }
  .marquee__track span { font-size: 36px; padding: 0 20px; }
  .service {
    grid-template-columns: 1fr 40px;
    gap: 12px 16px;
    padding: 28px 4px;
  }
  .service:hover { padding-left: 12px; }
  .service__no { grid-column: 1 / -1; font-size: 28px; }
  .service__title { font-size: 20px; gap: 4px; flex-direction: column; }
  .service__title small { font-size: 14px; }
  .service__desc { font-size: 14px; }
  .service__arrow { width: 40px; height: 40px; }

  .challenge { padding-top: 110px; }
  .challenge__visual { padding-bottom: 48px; }
  .challenge__bg img { object-position: 68% 45%; }
  .challenge__veil {
    background:
      linear-gradient(180deg, var(--dawn) 0%, rgba(245, 227, 210, 0) 7%),
      linear-gradient(180deg, rgba(12, 19, 48, .6) 0%, rgba(12, 19, 48, .45) 40%, rgba(12, 19, 48, .4) 75%, rgba(12, 19, 48, .8) 94%, var(--night) 100%);
  }
  .challenge__message { margin-top: -12px; }
  .challenge__message p { font-size: 15px; line-height: 2.1; }
  .challenge__message strong { font-size: 17px; }
  .pillars { grid-template-columns: 1fr; gap: 16px; }
  .pillar { padding: 32px 26px; border-radius: 20px; }
  .pillar__icon { width: 52px; margin-bottom: 20px; }
  .pillar__title { font-size: 28px; }

  .mail { padding: 32px 22px; border-radius: 20px; }
  .mail__address { font-size: 26px; margin: 14px 0 28px; }
  .mail__actions .btn { width: 100%; justify-content: center; }
  .mail__checklist { grid-template-columns: 1fr; gap: 8px; }
  .mail__checklist li { padding: 12px 16px; }
  .contact__lead { margin-bottom: 32px; }

  .footer { padding: 56px 0 100px; }
  .footer__inner { grid-template-columns: 1fr; justify-items: center; gap: 28px; text-align: center; }
  .footer__logo img { width: 130px; }
  .footer__nav { flex-wrap: wrap; justify-content: center; gap: 14px 24px; font-size: 13px; }
  .footer__copy { width: 100%; font-size: 11px; }

  .totop { right: 16px; bottom: 16px; width: 48px; height: 48px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    transition-delay: 0s !important;
    scroll-behavior: auto !important;
  }
}