:root {
  --ink: #0a0a0a;
  --paper: #f4f2eb;
  --acid: #dfff00;
  --white: #fff;
  --line: rgba(10, 10, 10, 0.2);
  --sans: "Inter", "Noto Sans JP", sans-serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  overflow-x: hidden;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  display: block;
  max-width: 100%;
}
button {
  font: inherit;
}
.cursor-glow {
  position: fixed;
  width: 28rem;
  height: 28rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(223, 255, 0, 0.2), transparent 68%);
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 2;
  opacity: 0;
  transition: opacity 0.3s;
}
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 88px;
  padding: 0 3.2vw;
  background: rgba(244, 242, 235, 0.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.brand {
  width: 128px;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 2.1rem;
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}
.site-nav a {
  display: flex;
  gap: 0.55rem;
  transition: opacity 0.2s;
}
.site-nav a:hover {
  opacity: 0.5;
}
.site-nav a span {
  font-size: 0.55rem;
  opacity: 0.5;
}
.site-nav .nav-contact {
  background: var(--ink);
  color: var(--white);
  padding: 1rem 1.35rem;
  border-radius: 100px;
}
.menu-button {
  display: none;
  background: none;
  border: 0;
}
.hero {
  position: relative;
  min-height: 100svh;
  padding: 130px 3.2vw 60px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  isolation: isolate;
  overflow: hidden;
}
.hero-fx {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.hero-spark {
  position: absolute;
  width: 9rem;
  height: 9rem;
  right: 24%;
  top: 34%;
  opacity: 0;
  transform: scale(0) rotate(0deg);
  animation: kirari 1.05s 1.7s cubic-bezier(0.2, 0.9, 0.2, 1) forwards;
}
.hero-spark::before,
.hero-spark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: #fff;
  box-shadow: 0 0 18px 6px rgba(255, 255, 255, 0.9), 0 0 36px 10px rgba(223, 255, 0, 0.75);
  transform: translate(-50%, -50%);
}
.hero-spark::before { width: 100%; height: 3px; }
.hero-spark::after { width: 3px; height: 100%; }
@keyframes kirari {
  0% { opacity: 0; transform: scale(0) rotate(0deg); }
  28% { opacity: 1; transform: scale(1) rotate(45deg); }
  52% { opacity: 1; transform: scale(0.6) rotate(58deg); }
  100% { opacity: 0; transform: scale(0.08) rotate(76deg); }
}
.hero-flare,
.hero-ring,
.hero-ray,
.hero-particles { display: none; }
.hero-flare {
  position: absolute;
  width: 180%;
  height: 8px;
  left: -40%;
  top: 48%;
  opacity: 0;
  background: linear-gradient(90deg, transparent, #fff 42%, var(--acid) 50%, #fff 58%, transparent);
  filter: blur(3px) drop-shadow(0 0 18px var(--acid));
  transform: rotate(-16deg) scaleX(0);
  transform-origin: center;
  animation: hero-flash 1.15s 0.55s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}
.hero-ring {
  position: absolute;
  border: 2px solid rgba(10, 10, 10, 0.65);
  border-radius: 50%;
  opacity: 0;
  animation: fizz-ring 2.4s ease-out forwards;
}
.hero-ring-a { width: 80px; height: 80px; right: 27%; top: 31%; animation-delay: 0.8s; }
.hero-ring-b { width: 36px; height: 36px; right: 15%; top: 58%; animation-delay: 1.05s; }
.hero-ray {
  position: absolute;
  width: 22vw;
  height: 2px;
  right: 20%;
  top: 47%;
  background: var(--ink);
  transform-origin: right center;
  opacity: 0;
}
.hero-ray-a { transform: rotate(28deg) scaleX(0); animation: ray-pop 0.8s 0.9s ease-out forwards; }
.hero-ray-b { transform: rotate(-38deg) scaleX(0); animation: ray-pop-b 0.8s 1.05s ease-out forwards; }
.fx-particle {
  position: absolute;
  width: var(--size);
  height: var(--size);
  left: var(--x);
  top: var(--y);
  border-radius: 50%;
  border: 1px solid rgba(10, 10, 10, 0.85);
  background: rgba(255, 255, 255, 0.28);
  opacity: 0;
  animation: fizz-pop var(--duration) var(--delay) cubic-bezier(0.1, 0.7, 0.2, 1) forwards;
}
@keyframes hero-flash {
  0% { opacity: 0; transform: rotate(-16deg) scaleX(0); }
  35% { opacity: 1; transform: rotate(-16deg) scaleX(1); }
  65% { opacity: 0.85; }
  100% { opacity: 0; transform: rotate(-16deg) scaleX(1.1); }
}
@keyframes fizz-ring {
  0% { opacity: 0; transform: scale(0.15); }
  20% { opacity: 0.8; }
  100% { opacity: 0; transform: scale(6); border-width: 0.5px; }
}
@keyframes fizz-pop {
  0% { opacity: 0; transform: translate3d(0, 24px, 0) scale(0); }
  25% { opacity: 0.95; }
  75% { opacity: 0.55; }
  100% { opacity: 0; transform: translate3d(var(--drift), -110px, 0) scale(1.8); }
}
@keyframes ray-pop {
  0% { opacity: 0; transform: rotate(28deg) scaleX(0); }
  40% { opacity: 0.8; transform: rotate(28deg) scaleX(1); }
  100% { opacity: 0; transform: rotate(28deg) scaleX(1.15); }
}
@keyframes ray-pop-b {
  0% { opacity: 0; transform: rotate(-38deg) scaleX(0); }
  40% { opacity: 0.8; transform: rotate(-38deg) scaleX(1); }
  100% { opacity: 0; transform: rotate(-38deg) scaleX(1.15); }
}
.hero:before {
  content: "";
  position: absolute;
  width: min(43vw, 650px);
  aspect-ratio: 1;
  border-radius: 50%;
  right: 4vw;
  top: 19%;
  background: var(--acid);
  z-index: -1;
}
.hero-meta {
  display: flex;
  justify-content: flex-end;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}
.hero-copy {
  position: relative;
  z-index: 1;
}
.eyebrow {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  margin: 0 0 1.4rem;
}
.hero h1 {
  font-size: clamp(3.6rem, 8.5vw, 9rem);
  line-height: 0.94;
  letter-spacing: -0.075em;
  margin: 0;
  font-weight: 900;
}
.hero h1 span {
  display: block;
}
.hero-word {
  opacity: 0;
  transform: translate3d(-1.15em, 0, 0);
  animation: copy-slide 0.82s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.hero-word-1 { animation-delay: 0.32s; }
.hero-word-2 { animation-delay: 0.72s; }
.hero-word-3 { animation-delay: 1.12s; }
.hero-intro-fade {
  opacity: 0;
  animation: content-fade 0.7s 0.1s ease-out forwards;
}
.hero-content-fade {
  opacity: 0;
  transform: translateY(16px);
  animation: content-fade-up 0.9s 1.9s ease-out forwards;
}
@keyframes copy-slide {
  0% { opacity: 0; transform: translate3d(-1.15em, 0, 0); filter: blur(8px); }
  100% { opacity: 1; transform: translate3d(0, 0, 0); filter: blur(0); }
}
@keyframes content-fade { to { opacity: 1; } }
@keyframes content-fade-up {
  to { opacity: 1; transform: translateY(0); }
}
.hero-lead {
  font-size: clamp(0.95rem, 1.3vw, 1.15rem);
  line-height: 2;
  margin: 2rem 0 0 48%;
  font-weight: 600;
}
.hero-mark {
  position: absolute;
  right: -0.04em;
  bottom: -0.21em;
  font-size: clamp(10rem, 26vw, 31rem);
  font-weight: 900;
  letter-spacing: -0.12em;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(10, 10, 10, 0.18);
  white-space: nowrap;
  z-index: -2;
}
.scroll-cue {
  position: absolute;
  left: 3.2vw;
  bottom: 2rem;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  writing-mode: vertical-rl;
}
.scroll-cue i {
  margin-top: 1rem;
  font-style: normal;
}
.ticker {
  background: var(--ink);
  color: var(--acid);
  overflow: hidden;
  border-block: 1px solid var(--ink);
}
.ticker-track {
  display: flex;
  width: max-content;
  animation: ticker 25s linear infinite;
}
.ticker span {
  font-size: clamp(2.6rem, 6vw, 6.5rem);
  font-weight: 900;
  letter-spacing: -0.055em;
  white-space: nowrap;
  padding-right: 0.35em;
}
@keyframes ticker {
  to {
    transform: translateX(-50%);
  }
}
.section-shell {
  padding: 10rem 3.2vw;
}
.section-label {
  display: flex;
  align-items: center;
  gap: 1rem;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}
.section-label span {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: 0.55rem;
}
.section-label-light {
  border-color: rgba(255, 255, 255, 0.25);
}
.vision-grid,
.company-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 8vw;
  margin-top: 7rem;
}
.display-title {
  font-size: clamp(4rem, 9.5vw, 10rem);
  line-height: 0.78;
  letter-spacing: -0.085em;
  margin: 0;
  font-weight: 900;
}
.vision-copy {
  padding-top: 2rem;
  max-width: 36rem;
}
.vision-copy p {
  font-size: 1rem;
  line-height: 2.15;
  margin: 0 0 2rem;
}
.vision-copy .vision-ja {
  font-size: clamp(1.7rem, 2.6vw, 2.8rem);
  line-height: 1.55;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 3rem;
}
.services {
  background: var(--ink);
  color: var(--white);
}
.services-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin: 7rem 0 5rem;
}
.services-head p {
  line-height: 2;
  font-weight: 600;
}
.service-card {
  position: relative;
  display: grid;
  grid-template-columns: 6rem 1.05fr 1fr 3rem;
  gap: 2rem;
  align-items: center;
  padding: 2.4rem 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.32);
  transition:
    background 0.3s,
    color 0.3s,
    padding 0.3s;
}
.service-card:last-child {
  border-bottom: 1px solid rgba(255, 255, 255, 0.32);
}
.service-no {
  font-size: 0.72rem;
}
.service-en {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  margin: 0 0 0.65rem;
}
.service-card h3 {
  font-size: 1.6rem;
  margin: 0;
  letter-spacing: -0.04em;
}
.service-card h3 em {
  font-size: 0.62rem;
  font-style: normal;
  border: 1px solid currentColor;
  border-radius: 100px;
  padding: 0.3rem 0.6rem;
  margin-left: 0.6rem;
  vertical-align: middle;
}
.service-card > p {
  font-size: 0.87rem;
  line-height: 1.9;
  margin: 0;
}
.service-arrow {
  font-size: 1.7rem;
  text-align: right;
}
.is-preparing {
  color: rgba(255, 255, 255, 0.65);
}
.company-list {
  margin: 0;
  padding: 0;
}
.company-list div {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 1rem;
  padding: 1.7rem 0;
  border-top: 1px solid var(--line);
}
.company-list div:last-child {
  border-bottom: 1px solid var(--line);
}
.company-list dt {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}
.company-list dd {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.9;
}
.company-list a {
  text-decoration: underline;
  text-underline-offset: 4px;
}
.contact {
  position: relative;
  background: var(--acid);
  min-height: 90vh;
  padding: 8rem 3.2vw;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  overflow: hidden;
}
.contact h2 {
  font-size: clamp(3.2rem, 7vw, 7.5rem);
  line-height: 1.05;
  letter-spacing: -0.07em;
  margin: 0 0 2rem;
}
.contact h2 span {
  display: block;
  white-space: nowrap;
}
.contact > p:not(.eyebrow) {
  line-height: 2;
}
.contact-button {
  width: min(560px, 88vw);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 2px solid var(--ink);
  border-radius: 100px;
  padding: 1.3rem 1.3rem 1.3rem 2rem;
  margin-top: 2rem;
  font-size: 0.9rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  transition: 0.3s;
}
.contact-button i {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  background: var(--ink);
  color: var(--white);
  border-radius: 50%;
  font-style: normal;
  font-size: 1.5rem;
}
.contact-orbit {
  position: absolute;
  width: 32rem;
  height: 32rem;
  animation: spin 22s linear infinite;
  opacity: 0.6;
  overflow: visible;
}
.contact-orbit circle {
  fill: none;
  stroke: rgba(10, 10, 10, 0.2);
  stroke-width: 1;
}
.contact-orbit text {
  fill: var(--ink);
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.5px;
}
@media (hover: hover) and (pointer: fine) {
  .service-card:hover {
    background: var(--acid);
    color: var(--ink);
    padding-inline: 2rem;
  }
  .contact-button:hover {
    background: var(--ink);
    color: var(--white);
  }
  .contact-button:hover i {
    background: var(--acid);
    color: var(--ink);
  }
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
.site-footer {
  background: var(--ink);
  color: var(--white);
  padding: 6rem 3.2vw 2rem;
}
.footer-logo {
  width: min(250px, 42vw);
  filter: invert(1);
  margin-bottom: 2.2rem;
}
.footer-info {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 1.25rem;
  padding: 1.35rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.25);
  font-size: 0.78rem;
  line-height: 1.4;
}
.footer-info p {
  margin: 0;
}
.footer-info a {
  text-decoration: underline;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  margin-top: 5rem;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
}
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition:
    opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.delay {
  transition-delay: 0.12s;
}
@media (max-width: 800px) {
  .cursor-glow {
    display: none;
  }
  .site-header {
    height: 70px;
    padding: 0 20px;
  }
  .brand {
    width: 100px;
  }
  .menu-button {
    display: none;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    position: relative;
    z-index: 2;
    padding: 0;
    background: var(--ink);
    color: var(--white);
    border-radius: 50%;
  }
  .menu-button span {
    display: none;
  }
  .menu-button span:nth-child(1) {
    top: 15px;
  }
  .menu-button span:nth-child(2) {
    top: 22px;
  }
  .menu-button span:nth-child(3) {
    top: 29px;
  }
  .menu-button b {
    display: block;
    font-size: 0.5rem;
    letter-spacing: 0.08em;
  }
  .menu-button[aria-expanded="true"] span:nth-child(1) {
    top: 23px;
    transform: rotate(45deg);
  }
  .menu-button[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }
  .menu-button[aria-expanded="true"] span:nth-child(3) {
    top: 23px;
    transform: rotate(-45deg);
  }
  .site-nav {
    position: fixed;
    inset: 0;
    background: var(--acid);
    display: none;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 15vw;
    gap: 1.7rem;
    font-size: 1.5rem;
  }
  .site-nav.open {
    display: flex;
  }
  .site-nav .nav-contact {
    margin-top: 1rem;
  }
  .hero {
    padding: 105px 20px 30px;
    min-height: 92svh;
  }
  .hero:before {
    width: 85vw;
    right: -28vw;
    top: 27%;
  }
  .hero-meta { display: none; }
  .hero h1 {
    font-size: clamp(3rem, 12.5vw, 4.2rem);
  }
  .hero-lead {
    margin: 2rem 0 0;
    font-size: 0.88rem;
  }
  .hero-mark {
    font-size: 40vw;
    bottom: 0.05em;
  }
  .scroll-cue {
    display: none;
  }
  .section-shell {
    padding: 6rem 20px;
  }
  .vision-grid,
  .company-grid {
    grid-template-columns: 1fr;
    margin-top: 4rem;
    gap: 4rem;
  }
  .display-title {
    font-size: 21vw;
  }
  .vision-copy {
    padding-top: 0;
  }
  .vision-copy .vision-ja {
    font-size: 1.7rem;
  }
  .services-head {
    display: block;
    margin: 4rem 0 3rem;
  }
  .services-head p {
    margin-top: 3rem;
  }
  .service-card {
    grid-template-columns: 3rem 1fr 2rem;
    gap: 1rem;
    padding: 2rem 0;
  }
  .service-card > p {
    grid-column: 2/4;
  }
  .company-list div {
    grid-template-columns: 1fr;
    gap: 0.7rem;
  }
  .contact {
    padding: 6rem 20px;
    min-height: 80vh;
  }
  .contact h2 {
    font-size: clamp(2.5rem, 10.4vw, 3.5rem);
    letter-spacing: -0.075em;
  }
  .contact-orbit {
    width: 90vw;
    height: 90vw;
  }
  .site-footer {
    padding: 5rem 20px 2rem;
  }
  .footer-logo {
    width: 170px;
    margin-bottom: 1.8rem;
  }
  .footer-info {
    grid-template-columns: 1fr;
    gap: 0.7rem;
    padding: 1.1rem 0;
    line-height: 1.35;
  }
  .footer-bottom {
    margin-top: 4rem;
  }
  .footer-bottom p {
    margin: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .ticker-track,
  .contact-orbit {
    animation: none;
  }
  .hero-fx {
    display: none;
  }
  .hero-word,
  .hero-intro-fade,
  .hero-content-fade {
    opacity: 1;
    transform: none;
    filter: none;
    animation: none;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}