:root {
  --ink: #151515;
  --paper: #f4f1e8;
  --acid: #f3ff53;
  --coral: #ff684c;
  --blue: #88a7ff;
  --line: rgba(21, 21, 21, 0.2);
  --serif: "Songti SC", "Noto Serif CJK SC", "STSong", serif;
  --sans: "Avenir Next", "PingFang SC", "Hiragino Sans GB", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 8%, rgba(255, 255, 255, 0.95), transparent 28rem),
    var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.65rem 1rem;
  color: var(--paper);
  background: var(--ink);
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.page-shell {
  min-height: 100vh;
  overflow-x: clip;
}

.site-header {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 2rem clamp(1.25rem, 4vw, 4.5rem);
}

.brand {
  display: inline-flex;
  gap: 0.75rem;
  align-items: center;
  text-decoration: none;
}

.brand-mark {
  position: relative;
  display: inline-block;
  width: 2rem;
  height: 2rem;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
}

.brand-mark::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 2.85rem;
  height: 0.85rem;
  content: "";
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  transform: translate(-50%, -50%) rotate(-24deg);
}

.brand-mark span {
  position: absolute;
  top: -0.18rem;
  right: 0.15rem;
  z-index: 1;
  width: 0.48rem;
  height: 0.48rem;
  background: var(--coral);
  border-radius: 50%;
}

.brand-name {
  font-family: var(--serif);
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.site-nav {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.site-nav a {
  position: relative;
  padding-bottom: 0.25rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.site-nav a::after {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  content: "";
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 240ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.hero {
  position: relative;
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100svh;
  padding: 9.5rem clamp(1.25rem, 8vw, 9rem) 3rem;
  isolation: isolate;
}

.hero::before {
  position: absolute;
  inset: 0;
  z-index: -3;
  content: "";
  background-image:
    linear-gradient(rgba(21, 21, 21, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 21, 21, 0.045) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to bottom, transparent, black 12%, black 78%, transparent);
}

.eyebrow,
.section-label,
.section-heading > p {
  margin: 0;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.22em;
}

.hero-copy {
  align-self: center;
  width: min(100%, 76rem);
  margin: 3rem auto 5rem;
}

.hero h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3.7rem, 8.4vw, 9rem);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.07em;
}

.hero h1 .line {
  display: block;
}

.hero h1 .line:nth-child(2) {
  margin-left: clamp(0rem, 8vw, 8rem);
}

.hero h1 i {
  color: var(--coral);
  font-style: normal;
}

.accent-word {
  position: relative;
  z-index: 1;
  display: inline-block;
  padding: 0 0.12em 0.05em;
  margin: 0 0.04em;
}

.accent-word::before {
  position: absolute;
  right: -0.06em;
  bottom: 0.04em;
  left: -0.04em;
  z-index: -1;
  height: 0.38em;
  content: "";
  background: var(--acid);
  transform: rotate(-2.5deg);
}

.hero-intro {
  max-width: 32rem;
  margin: clamp(2.25rem, 5vw, 4.75rem) 0 0 auto;
  font-size: clamp(0.92rem, 1.3vw, 1.08rem);
  line-height: 2;
  letter-spacing: 0.05em;
}

.hero-meta {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding-top: 1.2rem;
  border-top: 1px solid var(--ink);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
}

.hero-arrow {
  font-family: serif;
  font-size: 2rem;
  line-height: 1;
}

.orbit {
  position: absolute;
  z-index: -2;
  pointer-events: none;
  border: 1px solid rgba(21, 21, 21, 0.18);
  border-radius: 50%;
}

.orbit::after {
  position: absolute;
  content: "";
  background: var(--ink);
  border-radius: 50%;
}

.orbit-large {
  top: 18%;
  right: -17vw;
  width: min(72vw, 65rem);
  aspect-ratio: 1.8;
  transform: rotate(-22deg);
  animation: breathe 7s ease-in-out infinite;
}

.orbit-large::after {
  bottom: 10%;
  left: 18%;
  width: 0.55rem;
  height: 0.55rem;
}

.orbit-small {
  bottom: 12%;
  left: -10rem;
  width: 25rem;
  height: 11rem;
  transform: rotate(20deg);
}

.orbit-small::after {
  top: 16%;
  right: 18%;
  width: 0.4rem;
  height: 0.4rem;
  background: var(--coral);
}

.floating-dot {
  position: absolute;
  z-index: -1;
  border-radius: 50%;
}

.dot-one {
  top: 19%;
  right: 12%;
  width: 1.1rem;
  height: 1.1rem;
  background: var(--blue);
  animation: float 5s ease-in-out infinite;
}

.dot-two {
  bottom: 24%;
  left: 9%;
  width: 0.65rem;
  height: 0.65rem;
  background: var(--coral);
  animation: float 4s 1s ease-in-out infinite reverse;
}

.about {
  display: grid;
  grid-template-columns: 0.35fr 1.25fr 1fr;
  gap: clamp(2rem, 5vw, 6rem);
  padding: clamp(6rem, 12vw, 10rem) clamp(1.25rem, 8vw, 9rem);
  border-top: 1px solid var(--line);
}

.section-index {
  align-self: start;
  font-family: var(--serif);
  font-size: clamp(3rem, 6vw, 6rem);
  line-height: 0.9;
  color: transparent;
  -webkit-text-stroke: 1px var(--ink);
}

.section-heading h2,
.focus-header h2 {
  margin: 1.5rem 0 0;
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1.35;
  letter-spacing: -0.04em;
}

.about-body {
  align-self: end;
  max-width: 30rem;
  padding-top: 8rem;
}

.about-body p {
  margin: 0;
  font-size: 0.96rem;
  line-height: 2;
  text-align: justify;
}

.about-body p + p {
  margin-top: 1.5rem;
}

.focus {
  padding: clamp(5rem, 10vw, 9rem) clamp(1.25rem, 4vw, 4.5rem);
  background: var(--ink);
}

.focus-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 0 clamp(0rem, 4vw, 4.5rem) 4rem;
  color: var(--paper);
}

.focus-header h2 {
  font-size: clamp(2.6rem, 5vw, 5.2rem);
}

.focus-count {
  font-family: var(--serif);
  font-size: 1.2rem;
}

.focus-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
  max-width: 90rem;
  margin: 0 auto;
}

.focus-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 30rem;
  padding: 1.6rem;
  overflow: hidden;
  transition:
    transform 350ms cubic-bezier(0.2, 0.8, 0.2, 1),
    border-radius 350ms ease;
}

.focus-card:hover {
  z-index: 2;
  border-radius: 7rem 0 0;
  transform: translateY(-0.75rem);
}

.focus-card h3 {
  margin: 0 0 1.2rem;
  font-family: var(--serif);
  font-size: clamp(2rem, 3vw, 3.4rem);
}

.focus-card p {
  max-width: 18rem;
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.85;
}

.card-number {
  align-self: flex-end;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
}

.card-symbol {
  position: absolute;
  top: 30%;
  left: 12%;
  font-family: var(--serif);
  font-size: 5rem;
  line-height: 1;
}

.card-content {
  background: var(--acid);
}

.card-brand {
  background: var(--coral);
}

.card-media {
  color: var(--paper);
  background: var(--blue);
}

.card-media .card-symbol {
  top: 27%;
  left: auto;
  right: 13%;
  font-size: 7rem;
  transform: rotate(7deg);
}

.card-orbit {
  width: 8rem;
  height: 8rem;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
}

.card-orbit::before {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 13rem;
  height: 3.8rem;
  content: "";
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  transform: translate(-50%, -50%) rotate(-28deg);
}

.statement {
  position: relative;
  display: grid;
  place-content: center;
  min-height: 42rem;
  padding: 7rem 1.25rem;
  overflow: hidden;
  text-align: center;
  background: var(--paper);
}

.statement > p {
  margin: 0 0 1.5rem;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.3em;
}

.statement h2 {
  position: relative;
  z-index: 1;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(4rem, 9vw, 9rem);
  line-height: 1.08;
  letter-spacing: -0.07em;
}

.statement-en {
  position: absolute;
  right: clamp(1.5rem, 8vw, 8rem);
  bottom: 4rem;
  font-family: var(--serif);
  font-size: clamp(1rem, 2vw, 1.5rem);
  font-style: italic;
  line-height: 1.2;
  text-align: left;
}

.statement-orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(90vw, 65rem);
  height: min(38vw, 21rem);
  border: 1px solid var(--ink);
  border-radius: 50%;
  transform: translate(-50%, -50%) rotate(-13deg);
}

.statement-orbit span {
  position: absolute;
  top: 50%;
  right: -0.65rem;
  width: 1.3rem;
  height: 1.3rem;
  background: var(--coral);
  border-radius: 50%;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: end;
  padding: 4rem clamp(1.25rem, 4vw, 4.5rem) 2rem;
  color: var(--paper);
  background: var(--ink);
}

.footer-brand {
  display: flex;
  gap: 1.2rem;
  align-items: center;
}

.brand-mark-light,
.brand-mark-light::after {
  border-color: var(--paper);
}

.footer-brand div {
  display: grid;
  gap: 0.35rem;
}

.footer-brand strong {
  font-family: var(--serif);
  letter-spacing: 0.08em;
}

.footer-brand div > span {
  font-size: 0.55rem;
  letter-spacing: 0.16em;
  opacity: 0.6;
}

.footer-meta {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  font-size: 0.67rem;
  letter-spacing: 0.04em;
  opacity: 0.72;
}

.icp-link {
  text-underline-offset: 0.28em;
  transition: opacity 180ms ease;
}

.icp-link:hover,
.icp-link:focus-visible {
  opacity: 0.65;
}

.reveal {
  opacity: 0;
  transform: translateY(1.5rem);
  animation: reveal 850ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.reveal-delay-1 {
  animation-delay: 120ms;
}

.reveal-delay-2 {
  animation-delay: 240ms;
}

.reveal-delay-3 {
  animation-delay: 420ms;
}

.reveal-delay-4 {
  animation-delay: 580ms;
}

@keyframes reveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  50% {
    transform: translate(0.5rem, -0.8rem);
  }
}

@keyframes breathe {
  50% {
    transform: rotate(-20deg) scale(1.025);
  }
}

@media (max-width: 820px) {
  .site-header {
    padding-top: 1.4rem;
  }

  .site-nav {
    gap: 1.1rem;
  }

  .hero {
    padding-top: 8.5rem;
  }

  .hero h1 {
    font-size: clamp(2.7rem, 10.5vw, 5.4rem);
  }

  .hero h1 .line:nth-child(2) {
    margin-top: 0.3rem;
    margin-left: 0;
  }

  .hero-intro {
    margin-left: 12vw;
  }

  .about {
    grid-template-columns: 5rem 1fr;
  }

  .section-heading {
    grid-column: 2;
  }

  .about-body {
    grid-column: 2;
    padding-top: 1rem;
  }

  .focus-grid {
    grid-template-columns: 1fr;
  }

  .focus-card {
    min-height: 22rem;
  }

  .card-symbol {
    top: 20%;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }

  .footer-meta {
    flex-wrap: wrap;
  }
}

@media (max-width: 520px) {
  .site-header {
    align-items: flex-start;
  }

  .site-nav {
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-end;
  }

  .site-nav a {
    font-size: 0.72rem;
  }

  .hero {
    min-height: 48rem;
    padding-right: 1rem;
    padding-left: 1rem;
  }

  .hero-copy {
    width: 100%;
    margin-top: 6rem;
  }

  .hero-intro {
    margin-top: 2.25rem;
    margin-left: 5vw;
    font-size: 0.82rem;
    line-height: 1.85;
  }

  .hero-intro br {
    display: none;
  }

  .hero-meta {
    gap: 1rem;
  }

  .about {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .section-index,
  .section-heading,
  .about-body {
    grid-column: 1;
  }

  .about-body {
    padding-top: 0;
  }

  .focus-header {
    align-items: flex-start;
  }

  .focus-count {
    margin-top: 0.4rem;
  }

  .focus-card:hover {
    border-radius: 4rem 0 0;
  }

  .statement {
    min-height: 34rem;
  }

  .statement-orbit {
    width: 130vw;
    height: 48vw;
  }

  .statement-en {
    right: 1.5rem;
    bottom: 2.5rem;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}