body{
  margin:0;
  background:#fff;
  color:#111;
  font-family: Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.origin-spiral{
  width:100%;
  overflow:hidden;
}

/* --------------------------------
   Hero
--------------------------------- */
.hero{
  position:relative;
  min-height:100vh;
  background-size:cover;
  background-position:center 70%;
  display:flex;
  align-items:center;
  justify-content:flex-start;
  color:#fff;
  padding:0 6%;
}

.hero-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(
    to bottom,
    rgba(0,0,0,0.18) 0%,
    rgba(0,0,0,0.28) 45%,
    rgba(0,0,0,0.42) 100%
  );
}

.hero-inner{
  position:relative;
  z-index:2;
  max-width:760px;
  margin-left:4%;
  opacity:0;
  transform:translateY(30px);
  transition:opacity 1.3s ease, transform 1.3s ease;
}

.hero-inner.is-visible{
  opacity:1;
  transform:translateY(0);
}

.eyebrow{
  margin:0 0 18px;
  font-size:0.78rem;
  letter-spacing:0.24em;
  text-transform:uppercase;
  opacity:0.9;
}

.hero h1{
  margin:0 0 20px;
  font-size:4rem;
  line-height:1.05;
  letter-spacing:0.04em;
  font-weight:700;
}

.tagline{
  margin:0;
  font-size:1.95rem;
  line-height:1.5;
  font-weight:700;
}

.sub{
  margin:18px 0 0;
  font-size:0.98rem;
  letter-spacing:0.03em;
  opacity:0.88;
}

/* --------------------------------
   Sections
--------------------------------- */
.container{
  max-width:1080px;
  margin:0 auto;
  padding:110px 24px;
}

.narrow{
  max-width:760px;
  margin:0 auto;
}

section h2{
  margin:0 0 28px;
  font-size:2.5rem;
  line-height:1.25;
  font-weight:700;
  letter-spacing:0.01em;
}

section h3{
  margin:0 0 24px;
  font-size:1.8rem;
  line-height:1.3;
  font-weight:700;
}

section p{
  margin:0 0 24px;
  font-size:1.12rem;
  line-height:2;
  letter-spacing:0.01em;
}

.lead{
  font-size:1.28rem;
  line-height:1.9;
  margin-bottom:28px;
}

/* --------------------------------
   Reveal
--------------------------------- */
.reveal{
  opacity:0;
  transform:translateY(34px);
  transition:opacity 1s ease, transform 1s ease;
}

.reveal.is-visible{
  opacity:1;
  transform:translateY(0);
}

/* --------------------------------
   Origin photos
--------------------------------- */
.origin-photos{
  display:flex;
  gap:40px;
  justify-content:center;
  align-items:flex-start;
  margin-bottom:64px;
}

.origin-photo-item{
  flex:1;
  max-width:420px;
  opacity:0;
  transform:translateY(24px);
  transition:opacity 1s ease, transform 1s ease;
}

.origin-photo-item.is-visible{
  opacity:1;
  transform:translateY(0);
}

.photo-left{
  transition-delay:.05s;
}

.photo-right{
  transition-delay:.18s;
}

.origin-photo-item img{
  width:100%;
  height:auto;
  display:block;
}

.caption{
  font-size:0.9rem;
  line-height:1.6;
  color:#777;
  margin-top:12px;
  margin-bottom:0;
}

/* --------------------------------
   Spiral image
--------------------------------- */
.spiral-image{
  margin:56px 0;
  text-align:center;
  overflow:hidden;
}

.spiral-image img{
  width:100%;
  max-width:520px;
  height:auto;
  display:block;
  margin:0 auto;
  opacity:0;
  transform:scale(1.03);
  transition:opacity 1.25s ease, transform 1.5s ease;
}

.spiral-image img.is-visible{
  opacity:1;
  transform:scale(1);
}

.spiral-core{
  margin-top:40px;
  margin-bottom:0;
  font-weight:600;
  font-size:1.08rem;
  line-height:1.9;
}

/* --------------------------------
   Link
--------------------------------- */
.from-spiral{
  border-top:1px solid #ececec;
}

.text-link{
  display:inline-block;
  margin-top:10px;
  color:#111;
  text-decoration:underline;
  font-size:0.98rem;
  line-height:1.8;
}

.text-link:hover{
  opacity:0.7;
}

/* --------------------------------
   Responsive
--------------------------------- */
@media screen and (max-width:768px){
  .hero{
    min-height:88vh;
    background-position:center center;
    justify-content:center;
    text-align:center;
    padding:0 20px;
  }

  .hero-inner{
    max-width:100%;
    margin:0 auto;
  }

  .eyebrow{
    font-size:0.72rem;
    letter-spacing:0.2em;
  }

  .hero h1{
    font-size:2.8rem;
  }

  .tagline{
    font-size:1.45rem;
    line-height:1.55;
  }

  .sub{
    font-size:0.92rem;
  }

  .container{
    padding:78px 20px;
  }

  section h2{
    font-size:2rem;
  }

  section h3{
    font-size:1.45rem;
  }

  section p{
    font-size:1.02rem;
    line-height:1.9;
  }

  .lead{
    font-size:1.12rem;
  }

  .origin-photos{
    flex-direction:column;
    gap:28px;
    margin-bottom:44px;
  }

  .origin-photo-item{
    max-width:100%;
  }

  .spiral-image{
    margin:42px 0;
  }

  .spiral-image img{
    max-width:100%;
  }
}

/* --------------------------------
   Reduced motion
--------------------------------- */
@media (prefers-reduced-motion: reduce){
  .hero-inner,
  .reveal,
  .origin-photo-item,
  .spiral-image img{
    opacity:1 !important;
    transform:none !important;
    transition:none !important;
  }
}