:root {
  color-scheme: dark;
  font-family: "Yu Gothic UI", "Noto Sans JP", system-ui, sans-serif;
  color: #f5f7f8;
  background: #06101a;
  --background: #06101a;
  --surface: #0b1722;
  --surface-raised: #111e29;
  --line: #263844;
  --line-gold: #8b6425;
  --text: #f5f7f8;
  --muted: #b7c2ca;
  --accent: #55d2b1;
  --accent-strong: #87efd5;
  --gold: #f6bd3a;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background: var(--background);
  color: var(--text);
  line-height: 1.75;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

.site-header,
.hero,
.feature-section,
.details-section,
.requirements-section,
.about-section,
.site-footer {
  width: min(1240px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 28px 0 20px;
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--text);
  font-size: 1.55rem;
  font-weight: 800;
  text-decoration: none;
}

.brand img,
.footer-brand img,
.about-icon img {
  border-radius: 14px;
}

.header-nav,
.site-footer nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.header-nav a,
.site-footer nav a {
  color: var(--muted);
  font-weight: 700;
  text-decoration: none;
}

.header-nav a:hover,
.header-nav a:focus-visible,
.site-footer nav a:hover,
.site-footer nav a:focus-visible,
.text-link:hover,
.text-link:focus-visible {
  color: var(--accent-strong);
}

.hero {
  display: grid;
  grid-template-columns: minmax(360px, 0.9fr) minmax(520px, 1.1fr);
  min-height: 820px;
  padding: 72px 0 88px;
  border-bottom: 1px solid var(--line);
}

.hero > * {
  min-width: 0;
}

.hero-copy {
  position: relative;
  z-index: 2;
  align-self: center;
  padding: 24px 0 80px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.18em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  line-height: 1.3;
}

h1 {
  margin-bottom: 28px;
  font-size: clamp(3.4rem, 6.6vw, 6.4rem);
  letter-spacing: -0.055em;
}

h1 span {
  color: var(--accent);
}

.hero-lead {
  max-width: 570px;
  margin-bottom: 32px;
  color: #d3dbe0;
  font-size: clamp(1.05rem, 1.6vw, 1.35rem);
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 24px;
}

.store-coming {
  display: inline-flex;
  min-height: 58px;
  align-items: center;
  justify-content: center;
  padding: 0 28px;
  border: 1px solid #57616a;
  border-radius: 12px;
  background: #2b3239;
  color: #c4c9cd;
  font-size: 1.08rem;
  font-weight: 800;
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.28);
}

.text-link {
  color: var(--accent);
  font-size: 1.05rem;
  font-weight: 900;
  text-decoration: none;
}

.text-link span {
  margin-left: 10px;
  font-size: 1.35em;
}

.requirement-note {
  max-width: 520px;
  margin: 26px 0 0;
  color: #8fa0ab;
  font-size: 0.82rem;
}

.hero-visual {
  position: relative;
  min-width: 0;
  min-height: 680px;
}

.hero-mascot {
  position: absolute;
  top: -78px;
  right: 0;
  width: min(650px, 95%);
  filter: drop-shadow(0 0 30px rgba(40, 205, 181, 0.22));
}

.controller-shot {
  position: absolute;
  z-index: 2;
  right: 0;
  bottom: 28px;
  width: min(760px, 100%);
  margin: 0;
  overflow: hidden;
  border: 1px solid #5d6b74;
  border-radius: 18px;
  background: #0b1118;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.62);
}

.controller-shot img {
  width: 100%;
}

.feature-section {
  padding: 64px 0 74px;
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  margin-bottom: 38px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(1.3rem, 2.6vw, 2rem);
  text-align: center;
}

.heading-line {
  height: 1px;
  background: var(--line-gold);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card {
  padding: 0 36px 18px;
}

.feature-card + .feature-card {
  border-left: 1px solid var(--line-gold);
}

.feature-art {
  height: 238px;
  margin-bottom: 28px;
}

.feature-art img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.feature-art-away img {
  filter: drop-shadow(0 14px 25px rgba(0, 0, 0, 0.45));
}

.feature-art-hotkey img {
  border-radius: 18px;
}

.feature-card h3 {
  margin-bottom: 12px;
  color: var(--accent);
  font-size: 1.28rem;
}

.feature-card p {
  margin-bottom: 0;
  color: #d0d8dd;
}

.feature-card .feature-note {
  margin-top: 14px;
  color: #8fa0ab;
  font-size: 0.78rem;
}

.details-section,
.requirements-section,
.about-section {
  display: grid;
  gap: 54px;
  margin-bottom: 28px;
  padding: 52px 56px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: 0 22px 55px rgba(0, 0, 0, 0.24);
}

.details-section {
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.85fr);
}

.details-section h2,
.requirements-section h2,
.about-section h2 {
  margin-bottom: 18px;
  font-size: clamp(1.8rem, 3.6vw, 3rem);
}

.details-copy > p:last-child,
.about-section p {
  color: #c5d0d7;
}

.details-list {
  display: grid;
  gap: 1px;
  align-self: center;
  margin: 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--line);
  list-style: none;
}

.details-list li {
  display: grid;
  gap: 3px;
  padding: 16px 20px;
  background: var(--surface-raised);
}

.details-list strong {
  color: var(--accent-strong);
}

.details-list span {
  color: var(--muted);
  font-size: 0.88rem;
}

.requirements-section {
  grid-template-columns: 0.55fr 1.45fr;
  align-items: start;
}

.requirements-list {
  margin: 0;
}

.requirements-list div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 18px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.requirements-list div:first-child {
  padding-top: 0;
}

.requirements-list dt {
  color: var(--accent);
  font-weight: 900;
}

.requirements-list dd {
  margin: 0;
  color: #d0d8dd;
}

.requirements-caution {
  grid-column: 1 / -1;
  margin: -22px 0 0;
  color: #8fa0ab;
  font-size: 0.86rem;
}

.about-section {
  grid-template-columns: auto 1fr;
  align-items: start;
  margin-bottom: 72px;
}

.about-icon {
  padding-top: 8px;
}

.about-section p:last-child {
  margin-bottom: 0;
}

.about-section .about-note {
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: #8fa0ab;
  font-size: 0.84rem;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 28px 0 34px;
  border-top: 1px solid var(--line);
}

.footer-brand {
  font-size: 1.2rem;
}

.trademark-note {
  grid-column: 1 / -1;
  margin: 0;
  color: #71818d;
  font-size: 0.74rem;
}

@media (max-width: 980px) {
  .site-header,
  .hero,
  .feature-section,
  .details-section,
  .requirements-section,
  .about-section,
  .site-footer {
    width: min(100% - 32px, 760px);
  }

  .header-nav {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 42px;
  }

  .hero-copy {
    padding-bottom: 0;
  }

  .hero-visual {
    min-height: 690px;
  }

  .hero-mascot {
    top: 20px;
    right: 0;
    width: min(620px, 96%);
  }

  .controller-shot {
    bottom: 20px;
    width: 94%;
  }

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

  .feature-card {
    display: grid;
    grid-template-columns: minmax(180px, 0.58fr) 1fr;
    gap: 0 28px;
    padding: 28px 12px;
  }

  .feature-card + .feature-card {
    border-top: 1px solid var(--line-gold);
    border-left: 0;
  }

  .feature-art {
    grid-row: 1 / span 3;
    height: 210px;
    margin: 0;
  }

  .details-section,
  .requirements-section {
    grid-template-columns: 1fr;
  }

  .requirements-caution {
    grid-column: auto;
    margin-top: -20px;
  }
}

@media (max-width: 620px) {
  .site-header,
  .hero,
  .feature-section,
  .details-section,
  .requirements-section,
  .about-section,
  .site-footer {
    width: min(100% - 32px, 760px);
  }

  .site-header {
    padding-top: 18px;
  }

  .brand {
    font-size: 1.3rem;
  }

  .brand img {
    width: 44px;
    height: 44px;
  }

  .hero {
    min-height: auto;
    padding: 32px 0 52px;
  }

  h1 {
    font-size: clamp(2.8rem, 10.6vw, 4rem);
  }

  .hero-lead {
    font-size: 1rem;
  }

  .hero-visual {
    min-height: 510px;
  }

  .hero-mascot {
    top: 12px;
    right: -8px;
    width: 105%;
  }

  .controller-shot {
    right: 4px;
    bottom: 12px;
    width: 96%;
    border-radius: 10px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .section-heading .heading-line {
    display: none;
  }

  .feature-grid {
    gap: 0;
  }

  .feature-card {
    display: block;
    padding: 30px 8px;
  }

  .feature-art {
    height: 220px;
    margin-bottom: 22px;
  }

  .details-section,
  .requirements-section,
  .about-section {
    gap: 30px;
    padding: 30px 24px;
    border-radius: 18px;
  }

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

  .about-icon img {
    width: 74px;
    height: 74px;
  }

  .requirements-list div {
    grid-template-columns: 1fr;
    gap: 3px;
  }

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

  .site-footer nav {
    flex-wrap: wrap;
    gap: 12px 22px;
  }

  .trademark-note {
    grid-column: auto;
  }
}

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