:root {
  --ink: #10213d;
  --muted: #68758e;
  --paper: #fffdf9;
  --paper-2: #f5fbff;
  --line: rgba(16, 33, 61, 0.12);
  --blue: #3d7cff;
  --cyan: #55d9ff;
  --mint: #86f1c7;
  --lime: #b8f66b;
  --peach: #ffae7d;
  --violet: #9b7cff;
  --shadow: 0 28px 80px rgba(7, 30, 71, .18);
  --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #0a3d75;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: -35px;
  z-index: -3;
  background:
    linear-gradient(140deg, rgba(4, 40, 85, .73), rgba(30, 100, 156, .45)),
    url('arena-background.jpg') center / cover no-repeat;
  filter: blur(4px) saturate(1.12);
  transform: scale(1.08);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(circle at 12% 18%, rgba(134, 241, 199, .38), transparent 27%),
    radial-gradient(circle at 90% 72%, rgba(155, 124, 255, .32), transparent 29%),
    linear-gradient(180deg, rgba(4, 29, 59, .08), rgba(4, 29, 59, .58));
}

a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
img { max-width: 100%; display: block; }

.site-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 24px auto;
  background: rgba(255, 253, 249, .95);
  border: 1px solid rgba(255,255,255,.55);
  box-shadow: var(--shadow);
  border-radius: 34px;
  overflow: hidden;
  backdrop-filter: blur(18px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 26px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.72);
}

.brand { display: inline-flex; align-items: center; gap: 11px; min-width: 190px; }
.brand img { width: 38px; height: 38px; border-radius: 11px; box-shadow: 0 8px 18px rgba(35, 99, 188, .18); }
.brand strong { font-family: ui-rounded, "Arial Rounded MT Bold", Inter, ui-sans-serif, system-ui, sans-serif; letter-spacing: -.02em; }
.nav-links { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; justify-content: center; }
.nav-links a {
  padding: 9px 12px;
  border-radius: 999px;
  color: #56627b;
  font-size: .92rem;
  transition: .2s ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); background: #edf6ff; }
.nav-cta { 
  padding: 10px 16px; border-radius: 999px; font-weight: 700; font-size: .9rem;
  background: linear-gradient(135deg, #b8f66b, #74efc8); box-shadow: 0 10px 25px rgba(74, 192, 140, .24);
}
.menu-btn { display:none; border:0; background:#edf6ff; width:42px; height:42px; border-radius:12px; cursor:pointer; }

.hero {
  position: relative;
  min-height: 620px;
  padding: 54px 54px 44px;
  background:
    radial-gradient(circle at 74% 8%, rgba(85, 217, 255, .12), transparent 25%),
    linear-gradient(180deg, rgba(255,255,255,.9), rgba(250, 253, 255, .96));
}

.hero-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 28px;
  margin-bottom: 44px;
}

.kicker, .index-no {
  font-family: ui-rounded, "Arial Rounded MT Bold", Inter, ui-sans-serif, system-ui, sans-serif;
  font-size: clamp(.92rem, 1.5vw, 1.15rem);
  letter-spacing: .14em;
  font-weight: 700;
}
.kicker { text-transform: uppercase; }
.index-no { font-size: clamp(1.4rem, 2vw, 2rem); letter-spacing: -.03em; }

.hero-center { max-width: 880px; margin: 0 auto; }
.hero-heading { text-align: center; margin-bottom: 34px; }
.hero-heading .eyebrow { color: #587089; font-size: .82rem; text-transform: uppercase; letter-spacing: .18em; font-weight: 700; }
.hero-heading h1 { font: 700 clamp(2.6rem, 7vw, 5.6rem)/.95 "Space Grotesk", sans-serif; letter-spacing: -.075em; margin: 12px 0 16px; }
.hero-heading p { max-width: 620px; margin: 0 auto; color: var(--muted); font-size: 1.04rem; line-height: 1.7; }

.mode-grid { display:grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.mode-card {
  min-height: 150px;
  border-radius: 22px;
  position: relative;
  overflow: hidden;
  padding: 20px;
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  box-shadow: 0 14px 30px rgba(38, 73, 133, .12);
  transform: translateY(0) rotate(0);
  transition: transform .35s cubic-bezier(.2,.8,.2,1), box-shadow .35s ease;
  isolation: isolate;
}
.mode-card::before, .mode-card::after { content:""; position:absolute; border-radius: 34% 66% 60% 40% / 52% 46% 54% 48%; z-index:-1; }
.mode-card::before { width:170px; height:170px; right:-42px; top:-66px; background:rgba(255,255,255,.26); transform:rotate(25deg); }
.mode-card::after { width:95px; height:95px; left:-30px; bottom:-40px; background:rgba(255,255,255,.24); }
.mode-card:hover { transform: translateY(-7px) rotate(-.6deg); box-shadow: 0 20px 44px rgba(30, 68, 132, .2); }
.mode-card:nth-child(2):hover, .mode-card:nth-child(4):hover { transform: translateY(-7px) rotate(.6deg); }
.card-a { background: linear-gradient(135deg, #74d8ff, #b9b3ff 55%, #ffd0cf); }
.card-b { background: linear-gradient(135deg, #8beccc, #64d8ea 60%, #9efbc1); }
.card-c { background: linear-gradient(135deg, #ff9ac8, #a993ff 58%, #73d6ff); }
.card-d { background: linear-gradient(135deg, #ffd77d, #ff9d86 58%, #b9f17b); }

.mode-icon {
  position:relative; z-index:2; width:76px; height:76px; border-radius:22px; padding:10px;
  background:rgba(255,255,255,.82); box-shadow: 0 12px 24px rgba(25, 57, 108, .15); object-fit:cover;
}
.mode-copy { position:relative; z-index:2; min-width:0; color:#10213d; }
.mode-card h3 { margin:0; font:700 1.05rem/1.15 "Space Grotesk", sans-serif; text-transform:uppercase; letter-spacing:-.02em; text-shadow:0 1px 0 rgba(255,255,255,.25); }
.mode-card small { display:block; margin-top:7px; color:#334661; opacity:1; font-weight:700; line-height:1.3; }
.play-pill { position:relative; z-index:2; justify-self:end; background:rgba(255,255,255,.94); border-radius:999px; padding:9px 16px; font-weight:800; color:#2f5068; box-shadow:0 7px 18px rgba(45,67,109,.12); white-space:nowrap; }

.hero-foot { margin-top: 42px; display:flex; align-items:center; justify-content:space-between; gap:20px; color:#53627a; font-size:.76rem; text-transform:uppercase; letter-spacing:.08em; font-weight:700; }
.hero-line { width:86px; height:3px; background:var(--ink); border-radius:999px; }

.section { padding: 78px 54px; border-top:1px solid var(--line); }
.section.soft { background: linear-gradient(180deg, #f8fcff, #fffdf9); }
.section-head { max-width: 760px; margin-bottom: 34px; }
.section-tag { display:inline-flex; align-items:center; gap:8px; font-weight:800; font-size:.76rem; text-transform:uppercase; letter-spacing:.14em; color:#5a6b85; }
.section-tag::before { content:""; width:20px; height:6px; border-radius:999px; background:linear-gradient(90deg,var(--cyan),var(--violet)); }
.section h2 { font:700 clamp(2rem, 4vw, 3.5rem)/1 "Space Grotesk", sans-serif; letter-spacing:-.05em; margin:10px 0 14px; }
.section-head p, .copy { color: var(--muted); line-height:1.78; }

.feature-strip { display:grid; grid-template-columns: repeat(4, 1fr); gap:14px; }
.feature-box { padding:22px; border:1px solid var(--line); border-radius:20px; background:#fff; min-height:180px; transition:.25s ease; }
.feature-box:hover { transform:translateY(-5px); border-color:rgba(61,124,255,.28); box-shadow:0 14px 35px rgba(30,72,135,.09); }
.feature-num { width:42px; height:42px; border-radius:13px; display:grid; place-items:center; background:#edf6ff; font-weight:800; margin-bottom:30px; }
.feature-box h3 { font:700 1.04rem "Space Grotesk", sans-serif; margin:0 0 8px; }
.feature-box p { margin:0; color:var(--muted); line-height:1.6; font-size:.92rem; }


.arena-info { background:#fffdf9; }
.arena-info-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.info-card { position:relative; overflow:hidden; padding:28px; border:1px solid var(--line); border-radius:24px; background:linear-gradient(155deg,#fff,#f7fbff); min-height:270px; transition:.28s ease; }
.info-card::after { content:""; position:absolute; width:150px; height:150px; border-radius:50%; right:-70px; top:-70px; background:linear-gradient(135deg,rgba(85,217,255,.18),rgba(155,124,255,.13)); }
.info-card.featured { background:linear-gradient(145deg,#ecfff6,#ecf9ff 58%,#f3efff); }
.info-card:hover { transform:translateY(-5px); box-shadow:0 18px 38px rgba(30,72,135,.1); }
.info-label { display:inline-flex; padding:7px 10px; border-radius:999px; background:#edf6ff; color:#3d5b7b; text-transform:uppercase; letter-spacing:.12em; font-size:.7rem; font-weight:800; }
.info-card h3 { position:relative; z-index:1; margin:44px 0 10px; max-width:260px; font:700 1.35rem/1.15 "Space Grotesk",sans-serif; letter-spacing:-.03em; }
.info-card p { position:relative; z-index:1; color:var(--muted); line-height:1.68; margin:0 0 18px; }
.info-card a { position:relative; z-index:1; font-weight:800; font-size:.88rem; color:#2d62b5; }

.split-heading { display:grid; grid-template-columns:1fr 1fr; gap:44px; align-items:end; margin-bottom:34px; }
.split-heading h2 { margin-bottom:0; }
.split-heading > p { margin:0; color:var(--muted); line-height:1.75; }
.flow-track { display:grid; grid-template-columns:repeat(4,1fr); gap:14px; }
.flow-card { padding:24px; min-height:190px; border-radius:22px; border:1px solid var(--line); background:#fff; position:relative; overflow:hidden; }
.flow-card::after { content:""; position:absolute; left:24px; right:24px; bottom:0; height:4px; border-radius:999px 999px 0 0; background:linear-gradient(90deg,var(--cyan),var(--violet)); opacity:.75; }
.flow-card span { display:inline-grid; place-items:center; width:44px; height:44px; border-radius:14px; background:linear-gradient(135deg,#dff7ff,#ece4ff); font-weight:800; }
.flow-card h3 { margin:27px 0 8px; font:700 1.08rem "Space Grotesk",sans-serif; }
.flow-card p { margin:0; color:var(--muted); line-height:1.58; font-size:.92rem; }
.setting-row { margin-top:18px; display:grid; grid-template-columns:repeat(4,1fr); border:1px solid var(--line); border-radius:20px; overflow:hidden; background:#fff; }
.setting-row > div { padding:18px 20px; border-right:1px solid var(--line); }
.setting-row > div:last-child { border-right:0; }
.setting-row strong, .setting-row span { display:block; }
.setting-row strong { font-family:"Space Grotesk",sans-serif; font-size:.95rem; }
.setting-row span { color:var(--muted); margin-top:5px; font-size:.8rem; }

.arena-band { margin:0 54px 78px; border-radius:30px; padding:42px; color:#fff; background:
  linear-gradient(115deg, rgba(13,52,105,.92), rgba(33,115,157,.78)),
  url('arena-background.jpg') center/cover;
  position:relative; overflow:hidden;
}
.arena-band::after { content:""; position:absolute; width:260px; height:260px; border:1px solid rgba(255,255,255,.2); border-radius:48px; right:-80px; top:-80px; transform:rotate(18deg); }
.arena-band h3 { font:700 clamp(2rem,4vw,3.2rem)/1 "Space Grotesk", sans-serif; margin:0 0 12px; max-width:650px; }
.arena-band p { max-width:650px; line-height:1.7; color:rgba(255,255,255,.82); }
.arena-actions { display:flex; gap:12px; flex-wrap:wrap; margin-top:26px; }
.button { display:inline-flex; align-items:center; justify-content:center; min-height:45px; padding:0 18px; border-radius:999px; font-weight:800; border:1px solid transparent; transition:.2s ease; }
.button.primary { background:linear-gradient(135deg,var(--lime),var(--mint)); color:#12324a; }
.button.ghost { border-color:rgba(255,255,255,.42); color:#fff; background:rgba(255,255,255,.08); }
.button:hover { transform:translateY(-2px); }

.page-hero { padding:72px 54px 46px; background:linear-gradient(180deg,#fff,#f7fbff); border-bottom:1px solid var(--line); }
.page-hero .crumb { color:#66738b; text-transform:uppercase; letter-spacing:.15em; font-size:.74rem; font-weight:800; }
.page-hero h1 { font:700 clamp(2.5rem,6vw,5rem)/.96 "Space Grotesk", sans-serif; letter-spacing:-.065em; margin:13px 0 16px; max-width:850px; }
.page-hero p { max-width:720px; color:var(--muted); line-height:1.75; margin:0; }

.content-grid { display:grid; grid-template-columns: 1fr 1fr; gap:18px; }
.content-card { padding:28px; border-radius:22px; border:1px solid var(--line); background:#fff; }
.content-card h2, .content-card h3 { font-family:"Space Grotesk",sans-serif; margin-top:0; }
.content-card p, .content-card li { color:var(--muted); line-height:1.72; }
.content-card ul, .content-card ol { padding-left:20px; }

.steps { display:grid; grid-template-columns:repeat(4,1fr); gap:14px; counter-reset:steps; }
.step { counter-increment:steps; border:1px solid var(--line); border-radius:20px; padding:22px; background:#fff; }
.step::before { content:"0" counter(steps); display:inline-grid; place-items:center; width:42px; height:42px; border-radius:14px; background:linear-gradient(135deg,#dff7ff,#e8ddff); font-weight:800; margin-bottom:26px; }
.step h3 { font-family:"Space Grotesk",sans-serif; margin:0 0 8px; }
.step p { color:var(--muted); line-height:1.65; margin:0; }

.faq-list { display:grid; gap:12px; }
.faq-item { border:1px solid var(--line); border-radius:18px; background:#fff; overflow:hidden; }
.faq-question { width:100%; border:0; background:transparent; color:var(--ink); text-align:left; padding:20px 22px; font-weight:800; cursor:pointer; display:flex; justify-content:space-between; gap:16px; }
.faq-answer { max-height:0; overflow:hidden; transition:max-height .3s ease; }
.faq-answer p { padding:0 22px 20px; margin:0; color:var(--muted); line-height:1.7; }
.faq-item.open .faq-answer { max-height:260px; }
.faq-item .plus { transition:.25s ease; }
.faq-item.open .plus { transform:rotate(45deg); }

.policy { max-width:850px; }
.policy h2 { font:700 1.35rem "Space Grotesk",sans-serif; margin:34px 0 8px; }
.policy p { color:var(--muted); line-height:1.78; }
.policy .updated { color:#43546d; font-weight:700; }
.notice { padding:18px 20px; border-radius:16px; background:linear-gradient(135deg,#eef9ff,#f4efff); border:1px solid #dce9f5; color:#52627a; line-height:1.65; }

.contact-panel { display:grid; grid-template-columns:1.15fr .85fr; gap:18px; }
.contact-box { padding:30px; border:1px solid var(--line); border-radius:22px; background:#fff; }
.contact-box h2 { font-family:"Space Grotesk",sans-serif; margin-top:0; }
.contact-box p { color:var(--muted); line-height:1.7; }
.contact-badge { display:inline-block; margin-top:8px; padding:10px 13px; border-radius:999px; background:#eff8ff; font-weight:800; font-size:.84rem; }

.footer { padding:30px 36px; border-top:1px solid var(--line); background:#fbfdff; display:flex; justify-content:space-between; align-items:center; gap:22px; flex-wrap:wrap; }
.footer-left { display:flex; align-items:center; gap:10px; }
.footer-left img { width:34px; height:34px; border-radius:10px; }
.footer small { color:#738198; }
.footer-links { display:flex; gap:16px; flex-wrap:wrap; font-size:.86rem; color:#65738b; }
.footer-links a:hover { color:var(--blue); }

.reveal { opacity:0; transform:translateY(18px); transition:opacity .65s ease, transform .65s ease; }
.reveal.visible { opacity:1; transform:none; }

@media (max-width: 900px) {
  .nav-links { display:none; position:absolute; z-index:20; top:78px; left:28px; right:28px; padding:12px; background:#fff; border:1px solid var(--line); border-radius:18px; box-shadow:0 18px 45px rgba(17,46,88,.15); }
  .nav-links.open { display:grid; }
  .nav-links a { text-align:center; }
  .nav-cta { display:none; }
  .menu-btn { display:grid; place-items:center; }
  .hero, .section, .page-hero { padding-left:28px; padding-right:28px; }
  .feature-strip, .steps, .arena-info-grid, .flow-track { grid-template-columns:1fr 1fr; }
  .split-heading { grid-template-columns:1fr; gap:16px; }
  .setting-row { grid-template-columns:1fr 1fr; }
  .setting-row > div:nth-child(2) { border-right:0; }
  .setting-row > div:nth-child(-n+2) { border-bottom:1px solid var(--line); }
  .arena-band { margin-left:28px; margin-right:28px; }
  .content-grid, .contact-panel { grid-template-columns:1fr; }
}

@media (max-width: 620px) {
  .site-shell { width:min(100% - 18px,1180px); margin:9px auto; border-radius:24px; }
  .nav { padding:14px 16px; }
  .brand { min-width:0; }
  .brand strong { font-size:.94rem; }
  .hero { min-height:auto; padding:32px 18px 30px; }
  .hero-top { margin-bottom:34px; }
  .hero-heading h1 { font-size:clamp(2.5rem,16vw,4.4rem); }
  .mode-grid { grid-template-columns:1fr; }
  .mode-card { min-height:126px; grid-template-columns:64px minmax(0,1fr) auto; gap:12px; padding:16px; }
  .mode-icon { width:64px; height:64px; border-radius:18px; padding:8px; }
  .mode-card h3 { font-size:.92rem; }
  .mode-card small { font-size:.76rem; margin-top:5px; }
  .play-pill { padding:8px 12px; font-size:.86rem; }
  .hero-foot { margin-top:28px; }
  .section, .page-hero { padding:54px 20px; }
  .feature-strip, .steps, .arena-info-grid, .flow-track, .setting-row { grid-template-columns:1fr; }
  .setting-row > div { border-right:0; border-bottom:1px solid var(--line); }
  .setting-row > div:last-child { border-bottom:0; }
  .arena-band { margin:0 18px 54px; padding:28px 22px; }
  .footer { padding:24px 20px; }
}


@media (max-width: 420px) {
  .mode-card { grid-template-columns:58px minmax(0,1fr); }
  .mode-icon { width:58px; height:58px; }
  .play-pill { grid-column:2; justify-self:start; margin-top:-2px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior:auto!important; animation:none!important; transition:none!important; }
}


/* Expanded home content */
.board-guide { background:linear-gradient(180deg,#fffdf9,#f9fdff); }
.board-stage-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.board-stage { padding:28px; border:1px solid var(--line); border-radius:24px; background:#fff; min-height:230px; position:relative; overflow:hidden; transition:.28s ease; }
.board-stage::after { content:""; position:absolute; width:130px; height:130px; border-radius:50%; right:-58px; bottom:-58px; background:linear-gradient(135deg,rgba(85,217,255,.17),rgba(155,124,255,.14)); }
.board-stage:hover { transform:translateY(-5px); box-shadow:0 18px 38px rgba(30,72,135,.09); }
.stage-dot { display:grid; place-items:center; width:46px; height:46px; border-radius:15px; background:linear-gradient(135deg,#dff7ff,#ebe4ff); font:700 .9rem "Space Grotesk",sans-serif; }
.board-stage h3 { margin:38px 0 9px; font:700 1.2rem "Space Grotesk",sans-serif; }
.board-stage p { margin:0; color:var(--muted); line-height:1.68; position:relative; z-index:1; }
.guide-link { margin-top:16px; padding:18px 22px; display:flex; justify-content:space-between; align-items:center; gap:18px; border:1px solid var(--line); border-radius:18px; background:linear-gradient(135deg,#eefaff,#f7f1ff); color:#51627a; }
.guide-link a { font-weight:800; color:#2d62b5; white-space:nowrap; }

.stat-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:14px; }
.stat-card { min-height:170px; padding:24px; border:1px solid var(--line); border-radius:22px; background:#fff; }
.stat-card strong { display:block; font:700 1.05rem "Space Grotesk",sans-serif; margin-bottom:32px; }
.stat-card p { color:var(--muted); line-height:1.65; margin:0; font-size:.92rem; }

.privacy-focus { background:#fffdf9; }
.privacy-panel { display:grid; grid-template-columns:1.05fr .95fr; gap:24px; padding:32px; border-radius:28px; background:linear-gradient(135deg,#edfaff,#f0fff7 48%,#f7f1ff); border:1px solid #dce9f5; }
.privacy-copy { padding:10px; }
.privacy-copy h2 { max-width:590px; }
.privacy-copy p { color:var(--muted); line-height:1.78; max-width:620px; }
.privacy-actions { display:flex; align-items:center; gap:16px; flex-wrap:wrap; margin-top:24px; }
.ink-button { background:#10213d; color:#fff; }
.text-link { color:#2d62b5; font-weight:800; }
.privacy-points { display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.privacy-points > div { background:rgba(255,255,255,.82); border:1px solid rgba(16,33,61,.09); border-radius:18px; padding:18px; }
.privacy-points span { display:inline-grid; place-items:center; width:36px; height:36px; border-radius:11px; background:#edf6ff; font-weight:800; font-size:.78rem; margin-bottom:24px; }
.privacy-points strong, .privacy-points small { display:block; }
.privacy-points strong { font-family:"Space Grotesk",sans-serif; margin-bottom:6px; }
.privacy-points small { color:var(--muted); line-height:1.55; }

.mini-faq-grid { display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.mini-faq { padding:25px; border:1px solid var(--line); border-radius:22px; background:#fff; }
.mini-faq h3 { font:700 1.05rem "Space Grotesk",sans-serif; margin:0 0 10px; }
.mini-faq p { margin:0; color:var(--muted); line-height:1.67; }
.faq-more { margin-top:20px; text-align:right; }
.faq-more a { color:#2d62b5; font-weight:800; }

@media (max-width: 900px) {
  .board-stage-grid, .stat-grid { grid-template-columns:1fr 1fr; }
  .privacy-panel { grid-template-columns:1fr; }
}
@media (max-width: 620px) {
  .board-stage-grid, .stat-grid, .privacy-points, .mini-faq-grid { grid-template-columns:1fr; }
  .guide-link { align-items:flex-start; flex-direction:column; }
  .privacy-panel { padding:20px; }
}