:root {
  --bg: #08080f;
  --panel: rgba(255, 255, 255, .04);
  --border: rgba(255, 255, 255, .09);
  --text: #e8e8f0;
  --muted: #9b9bb0;
  --cyan: #37e6f5;
  --magenta: #f472e0;
  --violet: #8b7cf6;
  --gold: #ffe066;
  --red: #ff6b81;
  --grad: linear-gradient(100deg, var(--cyan), var(--violet) 50%, var(--magenta));
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
  --ease-drawer: cubic-bezier(0.32, 0.72, 0, 1);
  --radius: 16px;
  --shadow: 0 18px 50px rgba(0, 0, 0, .45);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(900px 500px at 15% -10%, rgba(139, 124, 246, .16), transparent 60%),
    radial-gradient(800px 500px at 85% 0%, rgba(244, 114, 224, .12), transparent 60%),
    radial-gradient(1000px 600px at 50% 110%, rgba(55, 230, 245, .10), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

canvas#bg {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: .55;
}

::selection { background: rgba(139, 124, 246, .45); }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(139, 124, 246, .35); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: rgba(139, 124, 246, .6); }

/* ---------------- Nav ---------------- */

header.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 14px 28px;
  backdrop-filter: blur(16px) saturate(150%);
  background: rgba(8, 8, 15, .62);
  transition: background .3s ease, box-shadow .3s ease;
}

header.nav::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(139, 124, 246, .35), transparent);
  opacity: 0;
  transition: opacity .3s ease;
}

header.nav.scrolled {
  background: rgba(8, 8, 15, .86);
  box-shadow: 0 10px 30px rgba(0, 0, 0, .35);
}

header.nav.scrolled::after { opacity: 1; }

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: .5px;
  color: var(--text);
  text-decoration: none;
}

.brand .logo {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--grad);
  display: grid;
  place-items: center;
  font-size: 17px;
  color: #0a0a14;
  box-shadow: 0 0 18px rgba(139, 124, 246, .5);
}

nav.links { display: flex; gap: 22px; margin-left: auto; }

nav.links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14.5px;
  transition: color .2s;
}

nav.links a:hover,
nav.links a.active { color: var(--text); }

.nav-pill {
  font-size: 12px;
  color: var(--gold);
  border: 1px solid rgba(255, 224, 102, .35);
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

/* ---------------- Hero ---------------- */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  z-index: 1;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  max-width: none;
  width: 100%;
  padding: 0 24px;
}

.hero-text {
  text-align: left;
  max-width: 520px;
  margin-left: auto;
  margin-right: 0;
}

.hero-text .hero-actions,
.hero-text .stats { justify-content: flex-start; }

.hero-kicker {
  letter-spacing: .35em;
  font-size: 12.5px;
  color: var(--cyan);
  text-transform: uppercase;
  margin-bottom: 18px;
  opacity: .9;
}

.hero-title {
  font-size: clamp(44px, 9vw, 96px);
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: -0.025em;
  font-optical-sizing: auto;
  margin-bottom: 18px;
}

.hero-title .strike {
  display: block;
  font-size: .38em;
  color: var(--muted);
  text-decoration: line-through;
  text-decoration-color: var(--red);
  text-decoration-thickness: 3px;
  opacity: .75;
}

.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 26px rgba(139, 124, 246, .45));
}

.hero-sub {
  color: var(--muted);
  font-size: clamp(14px, 2.2vw, 18px);
  letter-spacing: .05em;
  margin-bottom: 16px;
}

.hero-tagline {
  display: inline-block;
  font-size: clamp(15px, 2.4vw, 19px);
  color: var(--gold);
  border: 1px dashed rgba(255, 224, 102, .4);
  padding: 8px 18px;
  border-radius: 999px;
  margin-bottom: 38px;
  background: rgba(255, 224, 102, .05);
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 64px;
}

.btn {
  padding: 13px 30px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  font-size: 15px;
  transition: transform 220ms var(--ease-out), box-shadow 220ms var(--ease-out), border-color 220ms ease, color 220ms ease;
  border: 1px solid transparent;
}

.btn:active {
  transform: scale(.97);
  transition-duration: 100ms;
}

.btn:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--grad);
  color: #0a0a14;
  box-shadow: 0 8px 30px rgba(139, 124, 246, .35);
}

.btn-ghost {
  border-color: rgba(255, 255, 255, .22);
  color: var(--text);
  background: rgba(255, 255, 255, .04);
}

.stats {
  display: flex;
  gap: clamp(20px, 5vw, 64px);
  flex-wrap: wrap;
  justify-content: center;
}

.stat b {
  display: block;
  font-size: clamp(30px, 5vw, 44px);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat span {
  color: var(--muted);
  font-size: 13.5px;
  letter-spacing: .08em;
}

/* ---------------- Marquee ---------------- */

.marquee {
  overflow: hidden;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: relative;
  z-index: 1;
  background: rgba(14, 14, 26, .6);
}

.marquee-track {
  display: flex;
  gap: 36px;
  width: max-content;
  animation: scroll 36s linear infinite;
  will-change: transform;
}

.marquee span {
  color: var(--muted);
  font-size: 14px;
  letter-spacing: .12em;
  white-space: nowrap;
}

@keyframes scroll { to { transform: translateX(-50%); } }

/* ---------------- Sections ---------------- */

section.block {
  padding: 96px 24px;
  position: relative;
  z-index: 1;
  scroll-margin-top: 72px;
}

.wrap { max-width: 1100px; margin: 0 auto; }

.kicker {
  color: var(--magenta);
  letter-spacing: .28em;
  font-size: 12px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

h2.title {
  font-size: clamp(28px, 4.6vw, 42px);
  font-weight: 900;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}

.lead {
  color: var(--muted);
  max-width: 640px;
  margin-bottom: 44px;
  font-size: 16.5px;
}

.sub-title {
  font-size: 19px;
  margin: 10px 0 18px;
}

.prose p { margin-bottom: 14px; color: #d4d4e0; font-size: 15.5px; }
.prose { margin-bottom: 36px; max-width: 820px; }

/* ---------------- Cards & callouts ---------------- */

.mission-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-bottom: 36px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform 220ms var(--ease-out), border-color 220ms ease, box-shadow 220ms ease;
}

.card .icon { font-size: 28px; margin-bottom: 12px; }
.card h3 { font-size: 17px; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 14.5px; }

.callout {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: rgba(255, 224, 102, .05);
  border: 1px solid rgba(255, 224, 102, .28);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 40px;
}

.callout .ico { font-size: 22px; line-height: 1.4; }
.callout p { font-size: 14.5px; color: #d8d8e4; }
.callout a { color: var(--gold); }

.diff-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}

.diff {
  background: rgba(139, 124, 246, .06);
  border: 1px solid rgba(139, 124, 246, .25);
  border-radius: var(--radius);
  padding: 20px 22px;
}

.diff h4 {
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--violet);
  margin-bottom: 6px;
}

.diff p { font-size: 14px; color: var(--muted); }

/* ---------------- Mascot ---------------- */

.oc-wrap {
  position: relative;
  max-width: min(70vw, 1100px);
  width: 100%;
  justify-self: end;
}

.oc-card {
  position: relative;
  line-height: 0;
  transition: transform 220ms var(--ease-out);
}

.oc-card img {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 24px 44px rgba(139, 124, 246, .35));
  animation: mascotFloat 4.8s ease-in-out infinite;
}

@keyframes mascotFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

.oc-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(8, 8, 15, .72);
  backdrop-filter: blur(8px);
  color: var(--gold);
  font-size: 11px;
  letter-spacing: .18em;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 224, 102, .35);
  white-space: nowrap;
}

.msg-wrap {
  position: absolute;
  top: 3%;
  left: -14%;
  width: clamp(160px, 26vw, 300px);
  z-index: 3;
  transform: rotate(-4deg);
  transition: transform 220ms var(--ease-out);
  animation: msgIn 500ms var(--ease-out) 800ms backwards;
}

.msg-wrap img {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 14px 28px rgba(0, 0, 0, .38));
  animation: msgFloat 5s ease-in-out 1.4s infinite;
}

@keyframes msgIn {
  from { opacity: 0; transform: translateY(16px) scale(.9) rotate(-4deg); }
  to   { opacity: 1; transform: translateY(0) scale(1) rotate(-4deg); }
}

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

/* ---------------- Games ---------------- */

.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}

.game-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform 220ms var(--ease-out), border-color 220ms ease, box-shadow 220ms ease;
}

.game-card .ghead {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.game-card .ghead .gicon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 22px;
  background: linear-gradient(135deg, rgba(55, 230, 245, .15), rgba(139, 124, 246, .15));
  border: 1px solid rgba(139, 124, 246, .3);
}

.game-card h3 { font-size: 17px; }
.game-card .gen { font-size: 11px; letter-spacing: .22em; color: var(--cyan); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }

.chip {
  font-size: 12.5px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .05);
  border: 1px solid var(--border);
  color: #d0d0dd;
}

.games-note {
  margin-top: 22px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

/* ---------------- Timeline & blueprint ---------------- */

.timeline {
  border-left: 2px solid rgba(139, 124, 246, .35);
  margin: 8px 0 48px 8px;
  padding-left: 28px;
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.tl-item { position: relative; }

.tl-item::before {
  content: "";
  position: absolute;
  left: -35px;
  top: 7px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--grad);
  box-shadow: 0 0 14px rgba(139, 124, 246, .8);
}

.tl-time {
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
  text-transform: uppercase;
}

.tl-item h3 { font-size: 17px; margin: 4px 0 6px; }
.tl-item p { color: var(--muted); font-size: 14.5px; }

.blueprint {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 14px;
}

.bp {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 20px;
  display: flex;
  gap: 14px;
  align-items: center;
}

.bp .month {
  flex: none;
  font-weight: 900;
  font-size: 13px;
  color: var(--magenta);
  background: rgba(244, 114, 224, .10);
  border: 1px solid rgba(244, 114, 224, .3);
  padding: 6px 10px;
  border-radius: 8px;
  letter-spacing: .05em;
}

.bp p { font-size: 14.5px; }

/* ---------------- Join ---------------- */

.join-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: start;
}

.join-info { max-width: 720px; }

.join-info p { color: var(--muted); margin-bottom: 18px; }

.join-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 26px;
}

.join-list li { display: flex; gap: 10px; font-size: 14.5px; color: #d0d0dd; }
.join-list .dot { color: var(--cyan); }

.contacts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 26px;
}

.contact-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 999px;
  background: var(--panel);
  border: 1px solid var(--border);
  font-size: 13.5px;
  color: #d0d0dd;
  text-decoration: none;
  transition: border-color .2s, color .2s;
}

.contact-chip:hover { border-color: var(--cyan); color: var(--cyan); }
.contact-chip.tba { opacity: .55; cursor: default; }

.download-btn { margin-bottom: 8px; }

@media (hover: hover) and (pointer: fine) {
  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(139, 124, 246, .55);
  }

  .btn-ghost:hover {
    border-color: var(--cyan);
    color: var(--cyan);
    transform: translateY(-2px);
  }

  .card:hover {
    transform: translateY(-4px);
    border-color: rgba(139, 124, 246, .5);
    box-shadow: var(--shadow);
  }

  .game-card:hover {
    transform: translateY(-4px);
    border-color: rgba(55, 230, 245, .4);
    box-shadow: var(--shadow);
  }

  .oc-wrap:hover .oc-card {
    transform: translateY(-5px) scale(1.01);
  }

  .msg-wrap:hover {
    transform: rotate(0deg) scale(1.04);
  }
}

.form-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.form-card h3 { margin-bottom: 18px; font-size: 18px; }

.field { margin-bottom: 14px; }

.field label {
  display: block;
  font-size: 12.5px;
  color: var(--muted);
  margin-bottom: 6px;
  letter-spacing: .05em;
}

.field input,
.field textarea {
  width: 100%;
  padding: 11px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(8, 8, 15, .6);
  color: var(--text);
  font: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}

.field input:focus,
.field textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(55, 230, 245, .12);
}

.field textarea { resize: vertical; min-height: 84px; }
.form-note { font-size: 12px; color: var(--muted); margin-top: 10px; }

.btn-block {
  width: 100%;
  margin-top: 6px;
  cursor: pointer;
  font-family: inherit;
  font-size: 15px;
  border: none;
}

/* ---------------- Footer ---------------- */

footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px 56px;
  position: relative;
  z-index: 1;
  background: rgba(8, 8, 15, .6);
}

.foot-wrap {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  text-align: center;
}

.foot-brand { font-weight: 800; }

.disclaimer { font-size: 12px; color: #76768c; max-width: 720px; }
.copyright { font-size: 12.5px; color: var(--muted); }

/* ---------------- Combo easter egg ---------------- */

#combo-layer {
  position: fixed;
  inset: 0;
  z-index: 120;
  pointer-events: none;
}

.combo-pop {
  position: fixed;
  transform: translate(-50%, -50%);
  font-weight: 900;
  font-size: 26px;
  letter-spacing: .04em;
  text-shadow: 0 0 18px currentColor;
  animation: comboFloat .85s cubic-bezier(.16, 1, .3, 1) forwards;
}

.combo-pop.perfect { color: var(--gold); }
.combo-pop.great { color: var(--cyan); }
.combo-pop.good { color: var(--violet); }
.combo-pop.miss { color: var(--red); font-size: 20px; }

.combo-pop small {
  display: block;
  text-align: center;
  font-size: .5em;
  opacity: .85;
  margin-top: 2px;
}

@keyframes comboFloat {
  0%   { opacity: 0; transform: translate(-50%, -50%) scale(.7); }
  15%  { opacity: 1; transform: translate(-50%, -50%) scale(1.08); }
  100% { opacity: 0; transform: translate(-50%, -110%) scale(1); }
}

@keyframes comboFade {
  from { opacity: 1; }
  to   { opacity: 0; }
}

/* ---------------- Reveal ---------------- */

.js-anim .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
}

.js-anim .reveal.visible {
  opacity: 1;
  transform: none;
}

/* ---------------- Responsive ---------------- */

@media (max-width: 820px) {
  .join-grid { grid-template-columns: 1fr; }
  nav.links { display: none; }
  header.nav { padding: 12px 18px; }
  .hero { padding: 110px 16px 64px; }
  section.block { padding: 72px 20px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; padding: 0; }
  .hero-text { text-align: center; }
  .hero-text .hero-actions,
  .hero-text .stats { justify-content: center; }
  .oc-wrap { width: 100%; max-width: 420px; margin: 0 auto; justify-self: center; }
  .msg-wrap { left: -2%; top: -6%; width: 150px; }
}

@media (max-width: 1180px) and (min-width: 821px) {
  .hero-inner {
    max-width: 1060px;
    gap: 44px;
  }
  .oc-wrap { max-width: 500px; }
}

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

  .js-anim .reveal {
    opacity: 1;
    transform: none;
    transition: opacity 200ms ease;
  }

  .marquee-track { animation: none; }
  .combo-pop { animation: comboFade 200ms ease-out forwards; }
  .oc-card img { animation: none; }
  .msg-wrap {
    animation: none;
    transform: rotate(-4deg);
  }
  .msg-wrap img { animation: none; }

  .btn:hover,
  .btn-primary:hover,
  .btn-ghost:hover,
  .card:hover,
  .game-card:hover,
  .oc-wrap:hover .oc-card {
    transform: none;
  }
}

@media (prefers-reduced-transparency: reduce) {
  header.nav {
    background: rgba(8, 8, 15, .97);
    backdrop-filter: none;
  }
}