:root{
  --bg:#000;
  --text:rgba(255,255,255,.92);
  --muted:rgba(255,255,255,.62);
  --muted2:rgba(255,255,255,.42);
  --line:rgba(255,255,255,.10);
  --pill:rgba(255,255,255,.06);
  --pill2:rgba(255,255,255,.10);
  --shadow:rgba(0,0,0,.70);
}

*{ box-sizing:border-box; margin:0; padding:0; }
html,body{ height:100%; }
body{
  background:var(--bg);
  color:var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  overflow-x:hidden;
}

/* background canvas */
#galaxy-canvas{
  position:fixed;
  inset:0;
  width:100%;
  height:100%;
  z-index:-2;
  display:block;
}

/* subtle vignette to keep text readable without blocking galaxy */
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  /* 旧版太黑，会把银河吃掉；改成“轻雾” */
  background:
    radial-gradient(ellipse at center,
      rgba(0,0,0,.05) 0%,
      rgba(0,0,0,.28) 55%,
      rgba(0,0,0,.55) 100%);
  body{
  background:
    radial-gradient(circle at 20% 30%, rgba(255,255,255,.08) 0 1px, transparent 2px) 0 0/180px 180px,
    radial-gradient(circle at 70% 60%, rgba(255,255,255,.06) 0 1px, transparent 2px) 0 0/220px 220px,
    radial-gradient(circle at 40% 80%, rgba(255,255,255,.05) 0 1px, transparent 2px) 0 0/260px 260px,
    #000;
}

}


/* NAV */
.nav{
  position:fixed;
  top:0; left:0; right:0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:18px 28px;
  z-index:50;
  background: linear-gradient(to bottom, rgba(0,0,0,.55), rgba(0,0,0,0));
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  letter-spacing:.02em;
  color:rgba(255,255,255,.82);
}

.brand .dot{
  width:6px; height:6px;
  border-radius:999px;
  background:rgba(255,255,255,.65);
  box-shadow:0 0 12px rgba(255,255,255,.25);
}

.navlinks{
  display:flex;
  gap:18px;
}

.navlinks a{
  color:rgba(255,255,255,.55);
  text-decoration:none;
  font-size:13px;
  letter-spacing:.02em;
}

.navlinks a:hover{ color:rgba(255,255,255,.82); }

.navcta{
  display:flex;
  gap:10px;
}

.pill{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:30px;
  padding:0 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--pill);
  color:rgba(255,255,255,.80);
  text-decoration:none;
  font-size:12px;
}

.pill:hover{ background:var(--pill2); }

.pill.primary{
  border-color:rgba(255,255,255,.18);
  background:rgba(255,255,255,.08);
  color:rgba(255,255,255,.90);
}

/* HERO */
.hero{
  min-height:100vh;
  display:flex;
  align-items:center;
}

.hero-inner{
  width:min(920px, 92vw);
  margin:0 auto;
  padding:0 2vw;
  transform: translateY(-2vh);
}

.kicker{
  font-size:11px;
  letter-spacing:.14em;
  color:rgba(255,255,255,.35);
  margin-bottom:16px;
}

.title{
  font-size: clamp(34px, 5.2vw, 64px);
  font-weight:750;
  letter-spacing:.02em;
  line-height:1.06;
  text-shadow: 0 18px 60px var(--shadow);
}

.subtitle{
  margin-top:14px;
  font-size:14px;
  letter-spacing:.08em;
  color:rgba(255,255,255,.55);
}

.questions{
  margin-top:18px;
  font-size: clamp(16px, 1.7vw, 20px);
  line-height:1.55;
  color:rgba(255,255,255,.88);
  text-shadow: 0 14px 50px var(--shadow);
}

.scrollhint{
  margin-top:26px;
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:rgba(255,255,255,.55);
  text-decoration:none;
  font-size:12px;
  letter-spacing:.12em;
}

.scrollhint:hover{ color:rgba(255,255,255,.78); }

.mouse{
  width:18px; height:26px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.22);
  position:relative;
}

.mouse::after{
  content:"";
  position:absolute;
  left:50%; top:7px;
  width:3px; height:3px;
  border-radius:999px;
  transform:translateX(-50%);
  background:rgba(255,255,255,.55);
  animation: wheel 1.6s infinite;
}

@keyframes wheel{
  0%{ opacity:.0; transform:translate(-50%, -2px); }
  30%{ opacity:1; }
  70%{ opacity:1; transform:translate(-50%, 8px); }
  100%{ opacity:0; transform:translate(-50%, 10px); }
}

/* BELOW */
.below{
  min-height:38vh;
  display:flex;
  align-items:flex-start;
  padding:6vh 0 10vh;
}

.below-inner{
  width:min(920px, 92vw);
  margin:0 auto;
  padding:0 2vw;
}

.inner-voice{
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.68);
  text-shadow: 0 14px 50px var(--shadow);
}

/* MARQUEE - fixed bottom, SpaceX-like */
/* =========================
   Scientists Marquee — “站台级”卡片
   ========================= */
.marquee-wrap{
  position: fixed;
  left: 0; right: 0;
  bottom: 0;
  padding: 14px 0 16px;
  z-index: 50;
  pointer-events: none;
  background: linear-gradient(to top, rgba(0,0,0,.78), rgba(0,0,0,.22), transparent);
  border-top: 1px solid rgba(255,255,255,.06);
}

.marquee{
  width: 100%;
  overflow: hidden;
}

#marqueeTrack{
  display: flex;
  gap: 18px;
  width: max-content;
  animation: marquee 120s linear infinite; /* 你觉得慢一点更“神圣”可以调 150s */
}

@keyframes marquee{
  0%{ transform: translateX(0); }
  100%{ transform: translateX(-50%); }
}

.marquee-card{
  min-width: 300px;
  max-width: 360px;
  padding: 10px 14px 10px;
  border: 1px solid rgba(255,255,255,.10);
  border-radius: 12px;
  background: rgba(0,0,0,.32);
  backdrop-filter: blur(8px);
  box-shadow: 0 0 0 1px rgba(0,0,0,.25) inset;
}

.m-name{
  font-size: 13px;
  letter-spacing: .06em;
  color: rgba(255,255,255,.92);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.m-meta{
  margin-top: 2px;
  font-size: 11px;
  color: rgba(255,255,255,.55);
  letter-spacing: .04em;
}

.m-mark{
  margin-top: 6px;
  font-size: 12px;
  color: rgba(255,255,255,.78);
  font-family: ui-serif, "Times New Roman", serif;
  font-style: italic;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}