@font-face {
  font-family: "Space Grotesk";
  src: url("../fonts/space-grotesk.woff2") format("woff2");
  font-display: swap;
  font-style: normal;
  font-weight: 300 700;
}

@font-face {
  font-family: "Noto Sans JP Local";
  src: url("../fonts/noto-sans-jp-subset.woff2") format("woff2");
  font-display: swap;
  font-style: normal;
  font-weight: 300 700;
}

:root {
  color-scheme: dark;
  --ink: #0b0906;
  --ink-lift: #151109;
  --paper: #f4f0e7;
  --muted: rgba(244, 240, 231, 0.68);
  --dim: rgba(244, 240, 231, 0.48);
  --faint: rgba(244, 240, 231, 0.18);
  --gold: #c7a458;
  --gold-deep: #8e713b;
  --line: rgba(199, 164, 88, 0.44);
  --gutter: clamp(1.5rem, 6vw, 7rem);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--ink);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background: radial-gradient(ellipse 46rem 30rem at 50% 0%, rgba(111, 82, 30, 0.16), transparent 70%), radial-gradient(circle at 50% 88%, rgba(104, 73, 21, 0.07), transparent 34rem), var(--ink);
  color: var(--paper);
  font-family: "Space Grotesk", "Noto Sans JP Local", sans-serif;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

#network {
  position: fixed;
  z-index: 0;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.58;
  animation: network-breathe 16s ease-in-out infinite;
}

main {
  position: relative;
  z-index: 1;
}

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  padding: 0 var(--gutter);
  isolation: isolate;
  overflow: hidden;
  text-align: center;
}

.hero::before,
.hero::after {
  position: absolute;
  z-index: 0;
  content: "";
  pointer-events: none;
}

.hero::before {
  top: 50%;
  left: 50%;
  width: min(78vw, 48rem);
  aspect-ratio: 1.6;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(199, 164, 88, 0.2), rgba(142, 113, 59, 0.065) 37%, transparent 72%);
  filter: blur(10px);
  transform: translate(-50%, -50%);
  animation: aura-breathe 15s ease-in-out infinite;
}

.hero::after {
  top: calc(50% - 4rem);
  left: -32%;
  width: 32%;
  height: 7rem;
  background: linear-gradient(90deg, transparent, rgba(199, 164, 88, 0.1), rgba(244, 240, 231, 0.17), rgba(199, 164, 88, 0.08), transparent);
  filter: blur(16px);
  opacity: 0;
  transform: skewX(-20deg);
  animation: gold-mist 24s cubic-bezier(0.34, 0, 0.24, 1) 4s infinite;
}

.hero__content {
  position: absolute;
  z-index: 2;
  inset: 0;
  width: 100%;
  padding: 0;
}

.hero__rail {
  position: absolute;
  z-index: 1;
  bottom: clamp(1.6rem, 5vw, 4rem);
  left: 50%;
  width: min(56vw, 35rem);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line) 18%, var(--line) 82%, transparent);
  transform: translateX(-50%);
}

.hero__index {
  position: absolute;
  z-index: 2;
  bottom: clamp(1.6rem, 5vw, 4rem);
  left: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  width: clamp(4rem, 8vw, 7rem);
  height: 1px;
  background: rgba(244, 240, 231, 0.19);
  transform: translateX(-50%);
}

.hero__index span {
  display: block;
  width: 42%;
  height: 1px;
  background: var(--gold);
  box-shadow: 0 0 0.8rem rgba(199, 164, 88, 0.52);
}

.logo-wrap {
  position: absolute;
  top: 50%;
  left: 50%;
  width: clamp(15rem, 35vw, 33rem);
  margin: 0;
  overflow: hidden;
  transform: translate(-50%, -50%);
}

.logo-wrap h1 {
  width: 100%;
  margin: 0;
  line-height: 0;
}

.logo-wrap img {
  display: block;
  width: 100%;
  height: auto;
}

.logo-wrap::after {
  position: absolute;
  top: -30%;
  bottom: -30%;
  left: -38%;
  width: 18%;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(244, 240, 231, 0.58), rgba(225, 193, 120, 0.88), transparent);
  mix-blend-mode: screen;
  transform: skewX(-22deg) translateX(-7rem);
  animation: logo-sweep 10s cubic-bezier(0.55, 0, 0.2, 1) 2.5s infinite;
}

.main-copy {
  position: absolute;
  top: calc(50% + clamp(1.5rem, 3.55vw, 3.375rem) + clamp(1.25rem, 2.5vw, 2rem));
  left: 50%;
  width: min(90vw, 44rem);
  margin: 0;
  color: var(--paper);
  font-size: clamp(1.02rem, 1.8vw, 1.35rem);
  font-weight: 400;
  letter-spacing: 0.025em;
  line-height: 1.52;
  transform: translateX(-50%);
}

.sub-copy {
  position: absolute;
  top: calc(50% + clamp(1.5rem, 3.55vw, 3.375rem) + clamp(4.1rem, 5vw, 4.3rem));
  left: 50%;
  width: min(90vw, 44rem);
  margin: 0;
  color: var(--muted);
  font-family: "Noto Sans JP Local", sans-serif;
  font-size: clamp(0.76rem, 1.15vw, 0.88rem);
  font-weight: 400;
  letter-spacing: 0.14em;
  line-height: 1.8;
  transform: translateX(-50%);
}

.content {
  width: min(100%, 72rem);
  margin: 0 auto;
  padding: clamp(3.8rem, 9vw, 8rem) var(--gutter) clamp(3rem, 7vw, 5.5rem);
  text-align: center;
}

.domains ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.8rem clamp(1.75rem, 4vw, 4.5rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.domains li {
  color: rgba(244, 240, 231, 0.86);
  font-size: clamp(0.85rem, 1.45vw, 1.03rem);
  font-weight: 400;
  letter-spacing: 0.05em;
  line-height: 1.7;
  white-space: nowrap;
}

.domains li::before {
  display: inline-block;
  width: 0.38rem;
  height: 0.38rem;
  margin: 0 0.72rem 0.1rem 0;
  content: "";
  border: 1px solid var(--gold);
  border-radius: 50%;
  box-shadow: 0 0 0.55rem rgba(199, 164, 88, 0.44);
}

.engagement {
  width: min(100%, 44rem);
  margin: clamp(4.8rem, 9vw, 8rem) auto 0;
  padding-top: clamp(1.55rem, 3vw, 2.25rem);
  border-top: 1px solid var(--faint);
}

.engagement h2 {
  max-width: 40rem;
  margin: 0 auto;
  color: rgba(244, 240, 231, 0.9);
  font-size: clamp(0.95rem, 1.58vw, 1.16rem);
  font-weight: 400;
  letter-spacing: 0.025em;
  line-height: 1.65;
}

.engagement p {
  margin: 0.9rem auto 0;
  color: var(--muted);
  font-family: "Noto Sans JP Local", sans-serif;
  font-size: clamp(0.72rem, 1.15vw, 0.81rem);
  font-weight: 400;
  letter-spacing: 0.035em;
  line-height: 1.9;
  line-break: strict;
  word-break: normal;
}

.site-footer {
  margin-top: clamp(5.2rem, 11vw, 9rem);
  padding-top: clamp(1.45rem, 3vw, 2rem);
  border-top: 1px solid rgba(244, 240, 231, 0.16);
  text-align: center;
}

.site-footer p,
.site-footer address {
  margin: 0;
  font-style: normal;
}

.company {
  color: rgba(244, 240, 231, 0.87);
  font-family: "Noto Sans JP Local", sans-serif;
  font-size: clamp(0.77rem, 1.15vw, 0.86rem);
  font-weight: 400;
  letter-spacing: 0.1em;
  line-height: 1.7;
}

.site-footer address,
.corporate-number,
.phone {
  margin-top: 0.65rem !important;
  color: rgba(244, 240, 231, 0.62);
  font-family: "Noto Sans JP Local", "Space Grotesk", sans-serif;
  font-size: clamp(0.67rem, 1.05vw, 0.76rem);
  font-weight: 400;
  letter-spacing: 0.018em;
  line-height: 1.75;
}

.phone a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: rgba(244, 240, 231, 0.38);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.phone a:hover,
.phone a:focus-visible {
  color: var(--gold);
  text-decoration-color: currentColor;
}

.copyright {
  margin-top: 1.75rem !important;
  color: var(--dim);
  font-size: 0.67rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  line-height: 1.5;
}

.reveal {
  opacity: 1;
  transform: none;
}

.reveal-ready .reveal {
  opacity: 0;
  transform: translateY(0.7rem);
  transition: opacity 1s cubic-bezier(0.2, 0.65, 0.2, 1), transform 1s cubic-bezier(0.2, 0.65, 0.2, 1);
}

.reveal-ready .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes network-breathe {
  0%, 100% {
    opacity: 0.48;
  }

  50% {
    opacity: 0.64;
  }
}

@keyframes aura-breathe {
  0%, 100% {
    opacity: 0.48;
    transform: translate(-50%, -50%) scale(0.93);
  }

  50% {
    opacity: 0.85;
    transform: translate(-50%, -50%) scale(1.08);
  }
}

@keyframes gold-mist {
  0%, 20% {
    opacity: 0;
    transform: translateX(0) skewX(-20deg);
  }

  36% {
    opacity: 0.42;
  }

  58% {
    opacity: 0.2;
  }

  75%, 100% {
    opacity: 0;
    transform: translateX(510vw) skewX(-20deg);
  }
}

@keyframes logo-sweep {
  0%, 20% {
    transform: skewX(-22deg) translateX(-7rem);
  }

  36%, 100% {
    transform: skewX(-22deg) translateX(51rem);
  }
}

@media (max-width: 44rem) {
  .hero {
    min-height: 100vh;
    min-height: 100svh;
  }

  .hero__rail {
    width: min(74vw, 21rem);
  }

  .hero__index {
    width: 3.8rem;
  }

  .sub-copy {
    top: calc(50% + clamp(1.5rem, 3.55vw, 3.375rem) + 5.8rem);
  }

  .content {
    padding-top: 3.75rem;
  }

  .domains ul {
    display: block;
  }

  .domains li + li {
    margin-top: 0.34rem;
  }

  .engagement {
    margin-top: 4.7rem;
  }

  .engagement h2 {
    max-width: 21rem;
  }

  .message-fragment {
    display: block;
  }

  .address-line {
    display: block;
    font-size: 0.64rem;
    white-space: nowrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  #network {
    display: none;
    animation: none;
  }

  .hero::before {
    animation: none;
  }

  .hero::after {
    animation: none;
    opacity: 0;
  }

  .logo-wrap::after {
    animation: none;
    opacity: 0;
  }

  .reveal,
  .reveal-ready .reveal,
  .reveal-ready .reveal.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }
}