:root {
  --paper: #f3efe6;
  --ink: #11110f;
  --vermilion: #c53a28;
  --muted: #77736b;
  --line: #cfc8bc;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 20% 15%, rgba(255, 255, 255, 0.48), transparent 27%),
    radial-gradient(circle at 78% 52%, rgba(255, 255, 255, 0.32), transparent 34%),
    var(--paper);
  color: var(--ink);
  font-family: "Helvetica Neue", Arial, "Noto Sans JP", sans-serif;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

a:focus-visible {
  outline: 2px solid var(--vermilion);
  outline-offset: 5px;
}

main {
  width: min(100%, 1600px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 0 clamp(24px, 3.6vw, 58px);
}

.studio-home {
  position: relative;
  display: grid;
  min-height: 100svh;
  padding-block: clamp(28px, 4vw, 58px);
  overflow: hidden;
  place-items: center;
}

.studio-home::before {
  position: absolute;
  top: 50%;
  right: clamp(24px, 3.6vw, 58px);
  left: clamp(24px, 3.6vw, 58px);
  height: 1px;
  background: var(--line);
  content: "";
}

.studio-home-line {
  position: absolute;
  top: clamp(28px, 4vw, 58px);
  right: clamp(24px, 3.6vw, 58px);
  left: clamp(24px, 3.6vw, 58px);
  height: 1px;
  background: var(--line);
}

.studio-home-mark {
  position: relative;
  z-index: 1;
  display: block;
  padding: clamp(38px, 5vw, 72px);
  background: var(--paper);
  text-align: center;
  animation: enter 620ms ease-out both;
}

.studio-home-kicker {
  color: var(--vermilion);
  font-size: 11px;
  font-weight: 520;
  letter-spacing: 0.15em;
}

.studio-home h1 {
  margin: 22px 0 28px;
  font-size: clamp(58px, 9.5vw, 150px);
  font-weight: 310;
  letter-spacing: -0.075em;
  line-height: 0.9;
}

.studio-home-project {
  display: inline-flex;
  padding-bottom: 7px;
  gap: 18px;
  border-bottom: 1px solid var(--ink);
  font-size: 13px;
  letter-spacing: 0.04em;
  transition: color 180ms ease, border-color 180ms ease;
}

.studio-home-mark:hover .studio-home-project {
  border-color: var(--vermilion);
  color: var(--vermilion);
}

.studio-home-meta {
  position: absolute;
  right: clamp(24px, 3.6vw, 58px);
  bottom: clamp(28px, 4vw, 58px);
  left: clamp(24px, 3.6vw, 58px);
  display: flex;
  padding-top: 18px;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.site-header {
  display: flex;
  min-height: 112px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand {
  font-size: clamp(25px, 2.4vw, 39px);
  font-weight: 430;
  letter-spacing: -0.045em;
}

nav {
  display: flex;
  align-items: center;
  gap: clamp(20px, 2.6vw, 42px);
  font-size: 14px;
}

nav a {
  position: relative;
}

nav a::after {
  position: absolute;
  right: 0;
  bottom: -6px;
  left: 0;
  height: 1px;
  background: var(--vermilion);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.hero {
  display: grid;
  min-height: calc(100vh - 180px);
  padding: clamp(110px, 16vh, 190px) 0 clamp(74px, 11vh, 120px);
  grid-template-columns: 34px 1fr;
  gap: clamp(24px, 2.8vw, 48px);
  align-items: start;
}

.hero-index {
  height: clamp(168px, 18vw, 220px);
  padding-top: 4px;
  border-left: 1px solid var(--vermilion);
  color: var(--vermilion);
  font-size: 19px;
  text-align: right;
}

.hero-content {
  animation: enter 620ms ease-out both;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-bottom: clamp(34px, 4.2vw, 58px);
  color: var(--vermilion);
  font-size: 13px;
  font-weight: 520;
  letter-spacing: 0.03em;
}

.eyebrow i {
  width: 1px;
  height: 20px;
  background: var(--muted);
}

.eyebrow .muted {
  color: var(--muted);
}

h1 {
  max-width: 1420px;
  margin: 0;
  font-size: clamp(64px, 9.15vw, 145px);
  font-weight: 310;
  letter-spacing: -0.072em;
  line-height: 0.92;
}

.hero-copy {
  max-width: 680px;
  margin: clamp(44px, 5vw, 70px) 0 0;
  font-size: clamp(17px, 1.35vw, 22px);
  line-height: 1.9;
}

.primary-link {
  display: flex;
  width: min(100%, 320px);
  min-height: 64px;
  margin-top: 42px;
  padding: 0 28px;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--muted);
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.primary-link .arrow {
  font-size: 24px;
  transition: transform 180ms ease;
}

.primary-link:hover {
  border-color: var(--vermilion);
  background: var(--vermilion);
  color: var(--paper);
}

.primary-link:hover .arrow {
  transform: translateX(5px);
}

.disclaimer {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.content-section {
  padding: clamp(100px, 12vw, 190px) 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: clamp(24px, 2.8vw, 48px);
}

.section-number,
.kicker {
  color: var(--vermilion);
  font-size: 13px;
  font-weight: 520;
  letter-spacing: 0.05em;
}

.section-heading h2,
.contact-block h2 {
  max-width: 950px;
  margin: 20px 0 0;
  font-size: clamp(40px, 6vw, 88px);
  font-weight: 320;
  letter-spacing: -0.06em;
  line-height: 1;
}

.about-grid {
  display: grid;
  margin: clamp(80px, 10vw, 140px) 0 0 calc(34px + clamp(24px, 2.8vw, 48px));
  border-top: 1px solid var(--line);
  grid-template-columns: repeat(3, 1fr);
}

.about-grid article {
  min-height: 300px;
  padding: 30px clamp(24px, 3vw, 48px) 30px 0;
  border-bottom: 1px solid var(--line);
}

.about-grid article + article {
  padding-left: clamp(24px, 3vw, 48px);
  border-left: 1px solid var(--line);
}

.about-grid span {
  color: var(--vermilion);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.about-grid h3,
.policy-item h3 {
  margin: 42px 0 16px;
  font-size: clamp(22px, 2vw, 31px);
  font-weight: 430;
  letter-spacing: -0.035em;
}

.about-grid p,
.policy-item p,
.policy-intro p {
  margin: 0;
  color: #4e4b45;
  font-size: 15px;
  line-height: 1.9;
}

.effective-date {
  margin: 30px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.policy-intro {
  display: grid;
  margin: clamp(72px, 9vw, 128px) 0 70px calc(34px + clamp(24px, 2.8vw, 48px));
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(32px, 7vw, 120px);
}

.policy-intro p {
  max-width: 560px;
  font-size: clamp(16px, 1.25vw, 20px);
}

.policy-list {
  margin-left: calc(34px + clamp(24px, 2.8vw, 48px));
  border-top: 1px solid var(--line);
}

.policy-item {
  display: grid;
  padding: 30px 0 38px;
  border-bottom: 1px solid var(--line);
  grid-template-columns: minmax(70px, 0.3fr) minmax(0, 1.7fr);
  gap: 28px;
}

.policy-item > span {
  padding-top: 8px;
  color: var(--muted);
  font-size: 12px;
}

.policy-item h3 {
  margin-top: 0;
}

.policy-item p {
  max-width: 850px;
}

.contact-block {
  display: flex;
  margin: clamp(90px, 11vw, 160px) 0 0 calc(34px + clamp(24px, 2.8vw, 48px));
  padding-top: 44px;
  align-items: flex-end;
  justify-content: space-between;
  border-top: 1px solid var(--ink);
}

.contact-block h2 {
  font-size: clamp(34px, 4vw, 58px);
}

.contact-name {
  transition: color 160ms ease;
}

.contact-name:hover {
  color: var(--vermilion);
}

.contact-block > a {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--ink);
  font-size: 18px;
}

footer {
  display: flex;
  min-height: 110px;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

@keyframes enter {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 860px) {
  .site-header {
    min-height: 92px;
  }

  nav a:not(:last-child) {
    display: none;
  }

  .hero {
    min-height: auto;
    padding-top: 92px;
    grid-template-columns: 24px 1fr;
  }

  h1 {
    font-size: clamp(54px, 15vw, 92px);
  }

  .desktop-break {
    display: none;
  }

  .disclaimer {
    display: block;
    padding: 24px 0;
  }

  .disclaimer span {
    display: block;
  }

  .disclaimer span + span {
    margin-top: 7px;
  }

  .about-grid,
  .policy-intro,
  .policy-list,
  .contact-block {
    margin-left: 0;
  }

  .about-grid,
  .policy-intro {
    grid-template-columns: 1fr;
  }

  .about-grid article {
    min-height: auto;
    padding: 32px 0;
  }

  .about-grid article + article {
    padding-left: 0;
    border-left: 0;
  }

  .about-grid h3 {
    margin-top: 24px;
  }

  .policy-item {
    grid-template-columns: 40px 1fr;
  }

  .contact-block {
    display: block;
  }

  .contact-block > a {
    display: inline-block;
    margin-top: 46px;
  }
}

@media (max-width: 520px) {
  main {
    padding-inline: 20px;
  }

  .studio-home {
    padding-inline: 20px;
  }

  .studio-home::before,
  .studio-home-line,
  .studio-home-meta {
    right: 20px;
    left: 20px;
  }

  .studio-home-mark {
    padding-inline: 16px;
  }

  .studio-home h1 {
    font-size: 18vw;
  }

  .brand {
    font-size: 24px;
  }

  nav {
    font-size: 13px;
  }

  .hero {
    padding: 76px 0 64px;
    grid-template-columns: 1fr;
  }

  .hero-index {
    width: 44px;
    height: 32px;
    padding: 0 0 0 10px;
    border-top: 1px solid var(--vermilion);
    border-left: 0;
    text-align: left;
  }

  .eyebrow {
    gap: 16px;
    margin-bottom: 32px;
    font-size: 11px;
  }

  h1 {
    font-size: 16.5vw;
    line-height: 0.94;
  }

  .hero-copy {
    margin-top: 36px;
    font-size: 15px;
  }

  .primary-link {
    min-height: 58px;
  }

  .content-section {
    padding: 86px 0;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .section-heading h2 {
    font-size: 42px;
  }

  .policy-intro {
    margin-top: 62px;
  }

  .policy-item {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  footer {
    display: block;
    padding: 34px 0;
  }

  footer a {
    display: block;
    margin-top: 14px;
  }
}

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

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