/* Presentación Hola Mundo — se limita a la pantalla Shield. */
:root { color-scheme: dark; }
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body.sbhs-body { min-height: 100svh; overflow: hidden; background: #080a16; color: #f8fafc; font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; -webkit-font-smoothing: antialiased; }
.sbhs-body:before { content: ""; position: fixed; inset: 0; pointer-events: none; opacity: .27; background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px); background-size: 52px 52px; mask-image: radial-gradient(ellipse at center, black 15%, transparent 75%); }
.sbhs-ambient { position: fixed; width: min(70vw, 800px); aspect-ratio: 1; border-radius: 50%; filter: blur(85px); pointer-events: none; opacity: .27; animation: sbhs-float 13s ease-in-out infinite alternate; }
.sbhs-ambient--one { left: -28%; top: -43%; background: #634bff; }
.sbhs-ambient--two { right: -25%; bottom: -55%; background: #10c0d5; animation-delay: -6s; }
.sbhs-stars { position: fixed; inset: 0; pointer-events: none; background-image: radial-gradient(2px 2px at 15% 27%, #fff9 45%, transparent 70%), radial-gradient(2px 2px at 78% 22%, #fff8 45%, transparent 70%), radial-gradient(2px 2px at 84% 68%, #fff8 45%, transparent 70%), radial-gradient(2px 2px at 26% 83%, #fff8 45%, transparent 70%); animation: sbhs-twinkle 5s ease-in-out infinite alternate; }
.sbhs-stage { position: relative; display: flex; justify-content: center; align-items: center; min-height: 100svh; padding: 24px; isolation: isolate; }
.sbhs-panel { width: min(100%, 850px); text-align: center; padding: clamp(32px, 6vw, 70px) 24px; position: relative; animation: sbhs-appear .9s cubic-bezier(.2,.8,.2,1) both; }
.sbhs-orbit { height: 94px; width: 94px; display: grid; place-items: center; margin: 0 auto 35px; position: relative; border: 1px solid rgba(255,255,255,.2); border-radius: 50%; box-shadow: 0 0 60px rgba(139,92,246,.16), inset 0 0 32px rgba(139,92,246,.12); }
.sbhs-orbit:before, .sbhs-orbit:after { content: ""; position: absolute; border: 1px solid rgba(167,139,250,.36); inset: -10px; border-radius: 50%; border-left-color: transparent; border-bottom-color: transparent; animation: sbhs-spin 10s linear infinite; }
.sbhs-orbit:after { inset: -21px; border-color: rgba(45,212,191,.24); border-right-color: transparent; border-top-color: transparent; animation-direction: reverse; animation-duration: 14s; }
.sbhs-orbit-core { font-size: 42px; line-height: 1; color: #ddd6fe; text-shadow: 0 0 30px #a78bfa; animation: sbhs-pulse 3s ease-in-out infinite; }
.sbhs-eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: 11px; letter-spacing: .22em; font-weight: 700; color: #a5b4cc; }
.sbhs-indicator { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: #5eead4; box-shadow: 0 0 18px #5eead4; }
.sbhs-title { margin: 23px 0 19px; font-size: clamp(56px, 10vw, 112px); line-height: 1.06; font-weight: 800; letter-spacing: -.075em; }
.sbhs-gradient { background: linear-gradient(105deg, #b7a4ff 12%, #7dd3fc 58%, #5eead4 100%); background-size: 200% 100%; -webkit-background-clip: text; background-clip: text; color: transparent; animation: sbhs-shimmer 7s ease-in-out infinite alternate; }
.sbhs-smile { display: inline-block; color: #c4b5fd; letter-spacing: -.07em; animation: sbhs-wave 2.8s ease-in-out infinite; transform-origin: 45% 75%; }
.sbhs-subtitle { font-weight: 400; margin: 0; font-size: clamp(16px, 2vw, 21px); color: #9ca9be; letter-spacing: -.015em; }
.sbhs-divider { height: 1px; width: min(260px, 70%); margin: 43px auto 26px; background: rgba(255,255,255,.13); overflow: hidden; }
.sbhs-divider span { display: block; width: 40%; height: 100%; background: linear-gradient(90deg, transparent, #a78bfa, transparent); animation: sbhs-slide 3.5s ease-in-out infinite; }
.sbhs-footer { color: #65728d; display: flex; gap: 12px; align-items: center; justify-content: center; letter-spacing: .2em; font-size: 10px; font-weight: 600; }
.sbhs-sparkle { color: #c4b5fd; font-size: 20px; }
@keyframes sbhs-float { to { transform: translate(7%, 9%) scale(1.12); } }
@keyframes sbhs-twinkle { to { opacity: .3; } }
@keyframes sbhs-appear { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes sbhs-spin { to { transform: rotate(360deg); } }
@keyframes sbhs-pulse { 50% { transform: scale(1.13) rotate(14deg); opacity: .8; } }
@keyframes sbhs-shimmer { to { background-position: 100% 0; } }
@keyframes sbhs-wave { 0%, 78%, 100% { transform: rotate(0); } 85% { transform: rotate(11deg); } 92% { transform: rotate(-6deg); } }
@keyframes sbhs-slide { from { transform: translateX(-120%); } to { transform: translateX(370%); } }
@media (max-width: 600px) { .sbhs-title { font-size: clamp(48px, 12vw, 70px); } .sbhs-orbit { margin-bottom: 30px; transform: scale(.86); } .sbhs-eyebrow { font-size: 9px; letter-spacing: .14em; } .sbhs-divider { margin-top: 34px; } .sbhs-footer { letter-spacing: .1em; font-size: 9px; } }
@media (prefers-reduced-motion: reduce) { *, *:before, *:after { animation: none !important; } }