*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  background:#0f0f10;
  overflow:hidden;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
}

.home{
  position:fixed;
  inset:0;
}

.home__bg{
  position:fixed;   /* ⭐ 改这里：不要 absolute */
  inset:0;

  width:100vw;
  height:100vh;

  object-fit:cover;
  display:block;

  filter: blur(0.6px) saturate(1.05);
}

.home__overlay{
  position:absolute;
  inset:48px;
  display:grid;
  place-items:center;
  text-align:center;
  color:#fff;
}

.home__title{
  font-weight:900;
  letter-spacing:.10em;
  line-height:1.05;

  font-size: clamp(64px, 8vw, 120px);
  text-transform:uppercase;
  text-align:center;

  color:#ffffff;

  /* ⭐ 关键：视觉加粗 */
  -webkit-text-stroke: 1.5px rgba(255,255,255,0.9);

  text-shadow: 0 10px 32px rgba(0,0,0,.35);

  transform: translateY(200px);
}

.home__sub{
  font-weight:900;
  font-size: 16px;
  letter-spacing:.58em;
  text-transform:uppercase;
  -webkit-text-stroke:0.2px #fff;

}

.home__cta{
  margin-top: 26px;
  transform: translateY(60px); /* ✅ 只让按钮往下，不会带动标题/副标题 */

  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.65);
  background: rgba(0,0,0,.18);
  color:#fff;
  font-weight:900;
  letter-spacing:.08em;
  cursor:pointer;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.home__frame{
  position:absolute;
  inset:0;
  pointer-events:none;
}

/* 点击后的淡出 */
.home.is-exit .home__overlay{
  opacity:0;
  transform: translateY(6px);
  transition: opacity 220ms ease, transform 220ms ease;
}