.intro-screen{position:fixed;inset:0;z-index:9999;display:grid;place-items:center;min-height:100dvh;padding:28px 22px;background:linear-gradient(180deg,#f8fbff 0%,#eef5ff 100%);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#0a2f66}.intro-screen.intro-hidden{display:none}.intro-card{width:min(560px,100%);text-align:center}.intro-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 13px;border-radius:999px;background:#fff;border:1px solid rgba(10,47,102,.12);box-shadow:0 8px 26px rgba(10,47,102,.08);font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:#f47b20}.intro-date{margin:20px 0 8px;font-size:14px;font-weight:700;color:#5c6f89}.intro-title{margin:0;font-size:clamp(44px,10vw,78px);line-height:.95;letter-spacing:-.055em;font-weight:900}.intro-title span{color:#f47b20}.intro-subtitle{margin:22px auto 0;max-width:430px;font-size:clamp(18px,4.5vw,24px);line-height:1.35;font-weight:700;color:#274f7f}.intro-rules{display:flex;justify-content:center;align-items:center;gap:10px;margin:18px 0 0;flex-wrap:wrap;color:#68809b;font-size:14px;font-weight:700}.intro-rules span+span:before{content:"•";margin-right:10px;color:#f47b20}.intro-play{margin-top:34px;width:min(390px,100%);border:0;border-radius:18px;padding:17px 22px;background:#0a2f66;color:#fff;font:inherit;font-size:17px;font-weight:850;box-shadow:0 14px 34px rgba(10,47,102,.24);cursor:pointer;transition:transform .16s ease,box-shadow .16s ease,background .16s ease}.intro-play:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(10,47,102,.28);background:#0d397a}.intro-play:active{transform:translateY(0)}.intro-note{margin:16px 0 0;color:#8191a4;font-size:13px;font-weight:650}@media(max-width:520px){.intro-card{transform:translateY(-2vh)}.intro-title{font-size:54px}.intro-subtitle{font-size:19px}.intro-play{margin-top:28px}}