.hb-intro-open { overflow: hidden; }
.hb-intro {
  position: fixed; inset: 0; z-index: 10000; isolation: isolate;
  display: grid; place-items: center; min-height: 100dvh;
  background: #0f1a1f; color: #e8f5ef;
  font-family: Inter, Arial, sans-serif;
  opacity: 1; transition: opacity 300ms ease;
}
.hb-intro__top, .hb-intro__baseline {
  position: absolute; left: clamp(24px, 5vw, 80px); right: clamp(24px, 5vw, 80px);
  display: flex; justify-content: space-between; gap: 24px;
  font-size: 9px; line-height: 1.4; letter-spacing: .16em; font-weight: 500;
}
.hb-intro__top { top: 38px; color: #87a49a; }
.hb-intro__top span:last-child { margin-right: 138px; }
.hb-intro__baseline { bottom: 34px; color: #5f7d74; }
.hb-intro__skip {
  position: absolute; right: clamp(24px, 5vw, 80px); top: 25px; z-index: 3;
  display: flex; align-items: center; justify-content: center; gap: 20px;
  min-height: 42px; padding: 10px 16px; border: 1px solid #365147; border-radius: 30px;
  background: transparent; color: #c4e1d5; font: 500 11px/1.2 Inter, Arial, sans-serif;
  cursor: pointer; transition: background 150ms ease, border-color 150ms ease;
}
.hb-intro__skip:hover { background: #192e2a; border-color: #97fce4; }
.hb-intro__skip:focus-visible { outline: 2px solid #97fce4; outline-offset: 4px; }
.hb-intro__skip span { font-size: 16px; color: #97fce4; }
.hb-intro__neural {
  position: absolute; width: min(700px, 92vw); height: min(630px, 78dvh);
  left: 50%; top: 48%; transform: translate(-50%, -50%);
  opacity: 1; transition: opacity 420ms ease, transform 650ms cubic-bezier(.2,.7,.2,1);
}
.hb-intro__canvas {
  display: block; width: 100%; height: calc(100% - 45px);
  opacity: .94; animation: hb-neural-arrive 750ms ease both;
}
.hb-intro__agents {
  position: absolute; left: 50%; bottom: 13px; transform: translateX(-50%);
  display: flex; align-items: center; gap: 20px; white-space: nowrap;
}
.hb-intro__agents > span {
  display: inline-flex; align-items: center; gap: 9px;
  color: #5c796f; font-size: 12px; letter-spacing: -.02em;
  transition: color 280ms ease, transform 280ms ease;
}
.hb-intro__agents i { width: 4px; height: 4px; border-radius: 50%; background: currentColor; }
.hb-intro__agents b { font-size: 10px; color: #2d4940; font-weight: 400; }
.hb-intro[data-active="pulse"] [data-intro-agent="pulse"],
.hb-intro[data-active="flow"] [data-intro-agent="flow"],
.hb-intro[data-active="guard"] [data-intro-agent="guard"],
.hb-intro[data-active="all"] [data-intro-agent] { color: #97fce4; transform: translateY(-2px); }
.hb-intro__identity {
  display: flex; flex-direction: column; align-items: center; position: relative;
  opacity: 0; transform: translateY(14px) scale(.97); pointer-events: none;
  transition: opacity 480ms ease 100ms, transform 650ms cubic-bezier(.2,.7,.2,1) 100ms;
}
.hb-intro__identity img { display: block; width: 94px; height: 94px; object-fit: contain; margin-bottom: 29px; }
.hb-intro__identity h2 {
  margin: 0; color: #edf8f2; font-family: Inter, Arial, sans-serif;
  font-size: clamp(37px, 6vw, 62px); line-height: 1; letter-spacing: -.07em; font-weight: 550;
}
.hb-intro__identity h2 span { display: inline-block; font-size: .34em; color: #97fce4; margin-left: 8px; vertical-align: top; padding-top: 5px; }
.hb-intro__identity p { margin: 20px 0 0; color: #8aa79b; font-size: 12px; letter-spacing: .01em; }
.hb-intro[data-phase="identity"] .hb-intro__neural {
  opacity: 0; transform: translate(-50%, -50%) scale(.84);
}
.hb-intro[data-phase="identity"] .hb-intro__identity { opacity: 1; transform: translateY(0) scale(1); }
.hb-intro[data-phase="exit"] { opacity: 0; pointer-events: none; }
.hb-intro[data-phase="exit"] .hb-intro__neural { opacity: 0; }
.hb-intro[data-phase="exit"] .hb-intro__identity { opacity: 1; transform: translateY(-7px) scale(1); }
@keyframes hb-neural-arrive { from { opacity: 0; transform: scale(.95); } to { opacity: .94; transform: scale(1); } }
@media (max-width: 600px) {
  .hb-intro__top { top: 34px; font-size: 8px; }
  .hb-intro__top span:last-child { display: none; }
  .hb-intro__skip { top: 21px; }
  .hb-intro__neural { height: min(560px, 70dvh); width: 100vw; }
  .hb-intro__agents { gap: 15px; }
  .hb-intro__baseline { font-size: 7px; letter-spacing: .09em; bottom: 28px; }
}
@media (prefers-reduced-motion: reduce) {
  .hb-intro, .hb-intro *, .hb-intro *::before, .hb-intro *::after { animation: none !important; transition: none !important; }
}