:root {
  --ink: #e9f6f3;
  --muted: #b7d0cb;
  --mist: #90c5be;
  --deep: #1d3b57;
  --night: #121a20;
  --line: rgba(144, 197, 190, 0.38);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(980px 520px at 50% -8%, rgba(34, 62, 86, 0.88), transparent 68%),
    radial-gradient(640px 420px at 92% 18%, rgba(144, 197, 190, 0.1), transparent 62%),
    var(--night);
  font-family: "Segoe UI", "PingFang SC", "Helvetica Neue", sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(144, 197, 190, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(144, 197, 190, 0.045) 1px, transparent 1px);
  background-size: 76px 76px;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 15%, transparent 72%);
}

[v-cloak] {
  display: none;
}

a {
  color: inherit;
  text-decoration: none;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  column-gap: 16px;
  padding: 12px 7vw;
  background: rgba(18, 26, 32, 0.18);
  backdrop-filter: blur(10px);
}

.topbar.is-scrolled {
  background: rgba(18, 26, 32, 0.86);
  border-bottom: 1px solid var(--line);
}

.mark {
  display: inline-flex;
  align-items: center;
  gap: 1px;
  font-size: 1.05rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.mark-logo {
  display: block;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  object-fit: cover;
}

.mark span,
.word span {
  color: var(--mist);
}

.topbar-link {
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--mist);
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.topbar-link:hover,
.topbar-link:focus-visible {
  background: var(--mist);
  color: var(--night);
}

.topnav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.topnav-item {
  position: relative;
}

.topnav-btn {
  padding: 6px 12px;
  border: 0;
  border-radius: 999px;
  color: var(--ink);
  background: transparent;
  font: inherit;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.topnav-btn::after {
  content: "";
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: 7px;
  vertical-align: 1px;
  border-left: 3px solid transparent;
  border-right: 3px solid transparent;
  border-top: 4px solid currentColor;
}

.topnav-btn:hover,
.topnav-btn:focus-visible,
.topnav-btn.is-open {
  background: var(--mist);
  color: var(--night);
}

.topnav-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  z-index: 2;
  min-width: 188px;
  margin: 0;
  padding: 16px 6px 6px;
  list-style: none;
  background: transparent;
  transform: translateX(-50%);
}

.topnav-menu::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 10px;
  bottom: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(18, 26, 32, 0.96);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.28);
}

.topnav-menu button {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  padding: 8px 12px;
  border: 0;
  border-radius: 8px;
  color: var(--ink);
  background: transparent;
  font: inherit;
  font-size: 0.88rem;
  text-align: left;
  white-space: nowrap;
  cursor: pointer;
}

.topnav-menu button:hover,
.topnav-menu button:focus-visible {
  color: var(--night);
  background: var(--mist);
}

.topbar-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.user-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 32px;
  border: 1px solid var(--line);
  border-radius: 8px;
  line-height: 0;
}

.user-btn:hover,
.user-btn:active,
.user-btn:focus-visible {
  border-color: var(--mist);
  background: var(--mist);
}

.user-btn img {
  display: block;
  width: 18px;
  height: 18px;
  object-fit: contain;
}

.user-btn .user-icon-dark {
  display: none;
}

.user-btn:hover .user-icon-light,
.user-btn:active .user-icon-light,
.user-btn:focus-visible .user-icon-light {
  display: none;
}

.user-btn:hover .user-icon-dark,
.user-btn:active .user-icon-dark,
.user-btn:focus-visible .user-icon-dark {
  display: block;
}

.user-page {
  min-height: calc(100vh - 140px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 72px 7vw;
}

.slider {
  position: relative;
  width: 100%;
  max-height: 1200px;
  margin: 0 auto;
  overflow: hidden;
}

.slider-list {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.slider-list li {
  position: relative;
  overflow: hidden;
}

.slider-list img {
  display: block;
  width: 100%;
  height: auto;
}

.slider.swiper-container-horizontal > .swiper-pagination-bullets {
  bottom: 35px;
}

.slider .swiper-pagination-bullet {
  width: 12px;
  height: 4px;
  border-radius: 0;
  background: #fff;
  opacity: 1;
  transition: width 0.5s ease;
}

.slider .swiper-pagination-bullet-active {
  width: 25px;
  background: #90c5be;
}

.intro,
.downloads {
  width: min(820px, calc(100% - 48px));
  margin: 0 auto;
  text-align: center;
}

.intro {
  padding: 30px 0 28px;
}

.kicker {
  margin: 0 0 20px;
  color: var(--mist);
  font-family: Consolas, "Cascadia Mono", monospace;
  font-size: 0.8rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.word {
  margin: 0;
  color: #f4fbf9;
  font-family: Palatino, "Palatino Linotype", "Iowan Old Style", serif;
  font-size: clamp(4.4rem, 12vw, 6.8rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.88;
}

.rule {
  width: 96px;
  height: 1px;
  margin: 28px auto 26px;
  background: linear-gradient(90deg, transparent, var(--mist), transparent);
}

.lead {
  margin: 0 auto;
  max-width: 46rem;
  color: var(--muted);
  font-size: 1.12rem;
  line-height: 1.75;
}

.pillars {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.pillars li {
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: rgba(29, 59, 87, 0.35);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.features {
  width: min(960px, calc(100% - 48px));
  margin: 56px auto 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  text-align: left;
}

.feature-col {
  padding: 22px 14px 14px;
  background:
    linear-gradient(165deg, rgba(29, 59, 87, 0.72), rgba(7, 16, 24, 0.35));
  border: 1px solid var(--line);
  border-radius: 16px;
}

.feature-col h2 {
  margin: 0 0 16px;
  color: var(--mist);
  font-family: Consolas, "Cascadia Mono", monospace;
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.feature-col ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-col li {
  padding: 9px 0;
  border-top: 1px solid rgba(144, 197, 190, 0.16);
  color: var(--ink);
  font-size: 0.98rem;
}

.feature-col li:first-child {
  border-top: 0;
  padding-top: 0;
}

.downloads {
  padding: 56px 0 96px;
}

.downloads h2 {
  margin: 0 0 28px;
  font-family: Palatino, "Palatino Linotype", serif;
  font-size: clamp(2rem, 4vw, 2.6rem);
  font-weight: 500;
}

.download-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.download-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
  min-height: 168px;
  padding: 26px 24px 22px;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  background:
    linear-gradient(165deg, rgba(29, 59, 87, 0.72), rgba(7, 16, 24, 0.35));
  border: 1px solid var(--line);
  border-radius: 16px;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.download-card:hover,
.download-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--mist);
  background:
    linear-gradient(165deg, rgba(144, 197, 190, 0.18), rgba(29, 59, 87, 0.72));
}

.download-platform {
  font-size: 1.35rem;
  letter-spacing: 0.02em;
}

.download-edition {
  color: var(--mist);
  font-family: Consolas, "Cascadia Mono", monospace;
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.download-file {
  margin-top: auto;
  color: var(--muted);
  font-size: 0.78rem;
}

.download-action {
  margin-top: 8px;
  color: var(--night);
  background: var(--mist);
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.notice {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(18, 26, 32, 0.72);
  backdrop-filter: blur(8px);
}

.notice-card {
  width: min(460px, 100%);
  padding: 36px 32px 28px;
  text-align: center;
  background:
    radial-gradient(420px 180px at 50% 0%, rgba(144, 197, 190, 0.16), transparent 70%),
    linear-gradient(165deg, rgba(29, 59, 87, 0.94), rgba(18, 26, 32, 0.98));
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.38);
}

.notice-card .kicker {
  margin-bottom: 14px;
}

.notice-card .rule {
  margin: 22px auto 0;
}

.notice-card h3 {
  margin: 0;
  color: #f4fbf9;
  font-family: Palatino, "Palatino Linotype", "Iowan Old Style", serif;
  font-size: clamp(1.7rem, 4vw, 2.15rem);
  font-weight: 500;
  line-height: 1.25;
}

.notice-close {
  margin-top: 22px;
  padding: 8px 18px;
  border: 0;
  border-radius: 999px;
  color: var(--night);
  background: var(--mist);
  font: inherit;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
}

.notice-close:hover,
.notice-close:focus-visible {
  background: var(--ink);
}

.site-footer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 12px 24px;
  padding: 0 7vw 28px;
  color: rgba(183, 208, 203, 0.7);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-quote {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.32em;
  margin: 0;
  text-align: center;
  text-transform: none;
  letter-spacing: 0.04em;
  font-size: 0.92rem;
}

.site-quote span {
  opacity: 0;
  transform: translateY(0.4em);
}

.site-quote.is-shown span {
  animation: quote-in 1.2s ease forwards;
}

@keyframes quote-in {
  from {
    opacity: 0;
    transform: translateY(0.4em);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.site-credit {
  justify-self: end;
  text-transform: none;
  letter-spacing: 0.04em;
}

@media (max-width: 980px) {
  .topbar {
    padding: 10px 16px;
  }

  .topnav-btn {
    padding: 6px 8px;
    font-size: 0.72rem;
    letter-spacing: 0.04em;
  }
}

@media (max-width: 720px) {
  .topbar {
    grid-template-columns: minmax(0, 1fr) auto;
    row-gap: 8px;
  }

  .topnav {
    grid-column: 1 / -1;
    justify-content: flex-start;
    overflow-x: auto;
  }

  .topbar-actions {
    grid-column: 2;
    grid-row: 1;
  }

  .site-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding-left: 16px;
    padding-right: 16px;
  }

  .site-footer > span:first-child {
    display: none;
  }

  .site-quote {
    flex-wrap: nowrap;
    white-space: nowrap;
  }

  .site-credit {
    justify-self: center;
  }

  .intro,
  .features,
  .downloads {
    width: calc(100% - 28px);
  }

  .features {
    margin-top: 40px;
  }

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

  .intro {
    padding-top: 72px;
  }

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

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

  .download-card,
  .notice {
    transition: none;
  }

  .site-quote span {
    opacity: 1;
    transform: none;
    animation: none;
  }
}