:root {
  color-scheme: light;
  --bg: #7bd7ff;
  --bg-2: #d8f5ff;
  --panel: rgba(255, 255, 255, 0.64);
  --panel-strong: rgba(255, 255, 255, 0.82);
  --text: #12324a;
  --muted: #52718a;
  --line: rgba(40, 147, 209, 0.2);
  --pink: #2ea8ff;
  --violet: #77c9ff;
  --blue: #159df7;
  --green: #30c9b0;
  --gold: #f5b642;
  --danger: #ff7aa8;
  --shadow: 0 26px 90px rgba(64, 151, 205, 0.22);
  font-family: "Zen Kaku Gothic New", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 14% 12%, rgba(255, 255, 255, 0.92), transparent 18rem),
    radial-gradient(circle at 84% 18%, rgba(173, 232, 255, 0.86), transparent 22rem),
    radial-gradient(circle at 50% 92%, rgba(255, 255, 255, 0.72), transparent 30rem),
    linear-gradient(180deg, #66c9ff 0%, var(--bg) 34%, var(--bg-2) 100%);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -2;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.52) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.52) 1px, transparent 1px);
  background-size: 84px 84px;
  mask-image: radial-gradient(circle at center, #000 12%, transparent 78%);
}

body::after {
  content: "";
  position: fixed;
  left: -10vw;
  right: -10vw;
  top: 10vh;
  height: 34vh;
  z-index: -2;
  pointer-events: none;
  opacity: 0.42;
  background:
    radial-gradient(ellipse at 18% 70%, #fff 0 10%, transparent 11%),
    radial-gradient(ellipse at 32% 52%, #fff 0 12%, transparent 13%),
    radial-gradient(ellipse at 72% 58%, #fff 0 14%, transparent 15%),
    radial-gradient(ellipse at 86% 72%, #fff 0 10%, transparent 11%);
  filter: blur(3px);
}

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

.crystal-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.bg-crystal {
  position: absolute;
  width: var(--size);
  height: var(--size);
  left: var(--left);
  top: var(--top);
  border: 1px solid rgba(255, 255, 255, 0.8);
  transform: rotate(45deg);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.72), rgba(80, 190, 255, 0.2));
  box-shadow: 0 0 42px rgba(36, 163, 255, 0.28);
  animation: floatCrystal var(--duration) ease-in-out infinite alternate;
}

.cursor-trail {
  position: fixed;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 20;
  opacity: 0;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.95), rgba(46, 168, 255, 0.36) 45%, transparent 72%);
  filter: blur(1px);
  transform: translate(-50%, -50%);
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  padding: 18px 22px;
  transition: padding 0.28s ease, background 0.28s ease, border-color 0.28s ease;
}

.nav.is-scrolled {
  padding-block: 10px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.68);
  backdrop-filter: blur(22px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1180px, 100%);
  margin: 0 auto;
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.logo-crystal {
  color: var(--pink);
  text-shadow: 0 0 22px rgba(46, 168, 255, 0.55);
}

.nav-links {
  display: flex;
  gap: 8px;
  padding: 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.45);
}

.nav-links a {
  padding: 8px 13px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.94rem;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-links a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.62);
}

.hero {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 100svh;
  padding: 120px 22px 80px;
  isolation: isolate;
}

.hero-content {
  width: min(1050px, 100%);
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(12px);
}

.badge-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 20px var(--green);
}

.hero-title {
  margin: 0;
}

.title-line {
  display: block;
  font-family: "Noto Serif SC", serif;
  font-size: clamp(4.2rem, 13vw, 11rem);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.08em;
  color: #0b78c5;
  text-shadow: 0 12px 42px rgba(255, 255, 255, 0.8), 0 0 34px rgba(46, 168, 255, 0.34);
}

.title-sub {
  display: block;
  margin-top: 18px;
  color: #0878c7;
  font-family: "Crimson Text", serif;
  font-size: clamp(1.2rem, 3vw, 2.1rem);
  font-style: italic;
  letter-spacing: 0.06em;
}

.hero-desc {
  max-width: 660px;
  margin: 24px auto 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.9;
}

.hero-scroll {
  display: inline-grid;
  gap: 8px;
  margin-top: 72px;
  color: rgba(18, 50, 74, 0.58);
  font-size: 0.86rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.scroll-arrow {
  animation: bounce 1.4s ease-in-out infinite;
}

.hero-silhouette {
  position: absolute;
  right: max(4vw, 18px);
  bottom: 7vh;
  width: min(26vw, 300px);
  aspect-ratio: 0.72;
  z-index: -1;
  opacity: 0.68;
  border-radius: 42% 58% 54% 46%;
  background:
    radial-gradient(circle at 50% 18%, rgba(255, 255, 255, 0.75) 0 18%, transparent 19%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.68), rgba(46, 168, 255, 0.16));
  filter: blur(0.5px);
}

.hero-crystals .crystal {
  position: absolute;
  width: var(--s, 42px);
  height: var(--s, 42px);
  border: 1px solid rgba(255, 255, 255, 0.9);
  transform: rotate(45deg);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.72), rgba(38, 166, 255, 0.18));
  box-shadow: 0 0 36px rgba(36, 163, 255, 0.24);
  animation: floatCrystal 5s ease-in-out infinite alternate;
}

.c1 { --s: 72px; left: 11%; top: 22%; }
.c2 { --s: 30px; left: 22%; bottom: 22%; animation-delay: 0.8s; }
.c3 { --s: 56px; right: 18%; top: 24%; animation-delay: 1.2s; }
.c4 { --s: 24px; right: 10%; bottom: 28%; animation-delay: 1.8s; }
.c5 { --s: 38px; left: 48%; top: 14%; animation-delay: 2.2s; }
.c6 { --s: 26px; left: 6%; bottom: 12%; animation-delay: 2.8s; }
.c7 { --s: 46px; right: 34%; bottom: 13%; animation-delay: 3.3s; }

.section-shell {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: 86px 0 0;
}

.section-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 24px;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-family: "Noto Serif SC", serif;
  font-size: clamp(2rem, 4vw, 3.6rem);
  letter-spacing: -0.05em;
}

.title-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.55);
  font-size: 1.5rem;
}

.section-sub {
  margin: 0;
  color: var(--muted);
}

.about-card,
.game-card,
.social-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(145deg, var(--panel), rgba(255, 255, 255, 0.42));
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.about-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 22px;
  align-items: end;
  min-height: 330px;
  padding: clamp(24px, 5vw, 52px);
  border-radius: 34px;
}

.about-card::before,
.game-card::before,
.social-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.72), transparent);
  transform: translateX(-120%);
  transition: transform 0.7s ease;
}

.about-card:hover::before,
.game-card:hover::before,
.social-card:hover::before {
  transform: translateX(120%);
}

.card-glow {
  position: absolute;
  inset: auto -90px -130px auto;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(46, 168, 255, 0.18);
  filter: blur(46px);
}

.card-content {
  position: relative;
  z-index: 1;
}

.card-content h3 {
  margin: 0 0 14px;
  font-family: "Noto Serif SC", serif;
  font-size: clamp(2rem, 4vw, 3.8rem);
}

.card-desc {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.9;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.tag {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #0f75bd;
  background: rgba(255, 255, 255, 0.58);
}

.btn-jump {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 50px;
  padding: 0 20px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 999px;
  color: #fff;
  font: inherit;
  font-weight: 800;
  background: linear-gradient(135deg, #22a9ff, #7dd7ff);
  white-space: nowrap;
  cursor: pointer;
}

.accent-gold {
  background: linear-gradient(135deg, #20a7ff, #ffd166);
}

.jump-arrow,
.game-arrow,
.social-arrow {
  transition: transform 0.2s ease;
}

.btn-jump:hover .jump-arrow,
.game-card:hover .game-arrow,
.social-card:hover .social-arrow {
  transform: translateX(5px);
}

.tribute-card {
  grid-template-columns: minmax(0, 1fr) 180px;
}

.qrcode-wrap {
  width: min(280px, 100%);
  margin-top: 24px;
  padding: 12px;
  border-radius: 28px;
  background: #fff;
  box-shadow: 0 18px 48px rgba(38, 166, 255, 0.24);
}

.qrcode-img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  border-radius: 18px;
  object-fit: cover;
}

.games-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  transition: max-height 0.42s ease, opacity 0.3s ease;
}

.games-grid.is-collapsed {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
}

.games-grid:not(.is-collapsed) {
  max-height: 2200px;
  opacity: 1;
}

.games-toggle {
  flex: 0 0 auto;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid rgba(255, 255, 255, 0.74);
  border-radius: 999px;
  color: #fff;
  font: inherit;
  font-weight: 900;
  background: linear-gradient(135deg, #1fa7ff, #7dd7ff);
  box-shadow: 0 14px 36px rgba(38, 166, 255, 0.22);
  cursor: pointer;
  white-space: nowrap;
}

.game-card {
  display: grid;
  align-content: space-between;
  min-height: 190px;
  padding: 20px;
  border-radius: 26px;
  transition: transform 0.24s ease, border-color 0.24s ease, background 0.24s ease;
}

.game-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 255, 255, 0.76);
  background: linear-gradient(145deg, var(--panel-strong), rgba(255, 255, 255, 0.6));
}

.game-num {
  color: rgba(8, 120, 199, 0.3);
  font-family: "Crimson Text", serif;
  font-size: 2rem;
  font-weight: 600;
}

.game-name {
  margin: 28px 0 24px;
  font-size: 1.12rem;
  line-height: 1.55;
}

.game-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--pink);
  font-weight: 800;
}

.game-card.accent-blue { --pink: var(--blue); }
.game-card.accent-purple { --pink: #4dbbff; }
.game-card.accent-green { --pink: var(--green); }
.game-card.accent-gold { --pink: var(--gold); }
.game-card.accent-pink { --pink: #5ccfff; }
.game-card::after {
  content: "";
  position: absolute;
  right: 18px;
  top: 18px;
  width: 34px;
  height: 18px;
  border-radius: 999px;
  opacity: 0.55;
  background:
    radial-gradient(circle at 25% 70%, #fff 0 42%, transparent 43%),
    radial-gradient(circle at 55% 45%, #fff 0 48%, transparent 49%),
    radial-gradient(circle at 78% 68%, #fff 0 38%, transparent 39%);
}

.social-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
}

.modal.is-open {
  opacity: 1;
  pointer-events: auto;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(36, 126, 182, 0.24);
  backdrop-filter: blur(14px);
}

.modal-card {
  position: relative;
  width: min(520px, 100%);
  padding: clamp(24px, 5vw, 42px);
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: 32px;
  color: var(--text);
  background:
    radial-gradient(circle at 88% 18%, rgba(125, 215, 255, 0.44), transparent 10rem),
    rgba(255, 255, 255, 0.84);
  box-shadow: 0 28px 92px rgba(42, 139, 199, 0.3);
  transform: translateY(12px) scale(0.98);
  transition: transform 0.22s ease;
}

.modal.is-open .modal-card {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--text);
  font: inherit;
  font-size: 1.4rem;
  background: rgba(255, 255, 255, 0.64);
  cursor: pointer;
}

.modal-kicker {
  margin: 0 0 10px;
  color: var(--blue);
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.modal-card h2 {
  margin: 0 0 14px;
  font-family: "Noto Serif SC", serif;
  font-size: clamp(1.9rem, 5vw, 3rem);
  letter-spacing: -0.04em;
}

.modal-card p {
  color: var(--muted);
  line-height: 1.85;
}

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.social-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px 18px;
  align-items: center;
  padding: 24px;
  border-radius: 28px;
}

.social-icon {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  grid-row: span 2;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.58);
  font-size: 1.7rem;
}

.social-name {
  font-size: 1.25rem;
  font-weight: 900;
}

.social-desc {
  color: var(--muted);
}

.social-arrow {
  grid-row: span 2;
  color: var(--gold);
  font-size: 1.6rem;
}

.footer {
  width: min(1180px, calc(100% - 36px));
  margin: 100px auto 28px;
  padding: 40px 20px;
  border: 1px solid var(--line);
  border-radius: 32px;
  text-align: center;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(18px);
}

.footer-crystals {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 18px;
  color: var(--pink);
}

.footer-crystal {
  text-shadow: 0 0 18px currentColor;
  animation: pulse 1.8s ease-in-out infinite alternate;
}

.footer-crystal:nth-child(2) { animation-delay: 0.2s; }
.footer-crystal:nth-child(3) { animation-delay: 0.4s; }
.footer-crystal:nth-child(4) { animation-delay: 0.6s; }

.footer-text {
  margin: 0 0 10px;
  font-weight: 900;
}

.footer-quote {
  margin: 0;
  color: var(--muted);
  font-family: "Crimson Text", "Noto Serif SC", serif;
  font-style: italic;
}

.reveal-card {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

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

@keyframes floatCrystal {
  from { transform: translateY(0) rotate(45deg); }
  to { transform: translateY(-18px) rotate(58deg); }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

@keyframes pulse {
  from { opacity: 0.45; transform: scale(0.88); }
  to { opacity: 1; transform: scale(1.08); }
}

@media (max-width: 980px) {
  .nav-inner {
    align-items: flex-start;
    gap: 14px;
  }

  .nav-links {
    max-width: 66vw;
    overflow-x: auto;
  }

  .about-card,
  .tribute-card {
    grid-template-columns: 1fr;
  }

  .games-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .nav {
    padding-inline: 12px;
  }

  .nav-inner {
    display: block;
  }

  .nav-logo {
    margin-bottom: 10px;
  }

  .nav-links {
    width: 100%;
    max-width: none;
    justify-content: flex-start;
  }

  .nav-links a {
    flex: 0 0 auto;
    font-size: 0.88rem;
  }

  .hero {
    padding-top: 150px;
  }

  .hero-badge {
    max-width: 100%;
    line-height: 1.5;
  }

  .section-header,
  .social-grid {
    grid-template-columns: 1fr;
  }

  .section-header {
    display: grid;
    align-items: start;
  }

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

  .game-card {
    min-height: 150px;
  }

  .social-grid {
    display: grid;
  }

  .social-card {
    grid-template-columns: auto 1fr;
  }

  .social-arrow {
    display: none;
  }

  .btn-jump {
    width: 100%;
    white-space: normal;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}