.skyline-hero {
  isolation: isolate;
  background:
    linear-gradient(180deg, rgba(255, 253, 248, .04), rgba(43, 33, 27, .18)),
    url("bangkok-skyline-morning.png") center / cover no-repeat;
}

.skyline-hero::after {
  position: absolute;
  z-index: 0;
  top: -180px;
  right: -160px;
  width: 440px;
  height: 440px;
  content: "";
  border: 1px solid rgba(255, 253, 248, .68);
  border-radius: 50%;
}

/* A warm paper envelope: a visual cue for mail, not a technical scan icon. */
.skyline-hero .skyline-letter {
  position: absolute;
  z-index: 1;
  top: 34px;
  right: 35px;
  width: 132px;
  height: 90px;
  overflow: hidden;
  border: 1.5px solid rgba(43, 33, 27, .78);
  border-radius: 10px;
  background:
    linear-gradient(90deg, var(--orange), var(--orange)) 17px 17px / 34px 3px no-repeat,
    linear-gradient(90deg, rgba(43, 33, 27, .42), rgba(43, 33, 27, .42)) 17px 27px / 72px 2px no-repeat,
    linear-gradient(90deg, rgba(43, 33, 27, .26), rgba(43, 33, 27, .26)) 17px 35px / 59px 2px no-repeat,
    linear-gradient(34deg, transparent 49.2%, rgba(43, 33, 27, .68) 49.7%, rgba(43, 33, 27, .68) 50.5%, transparent 51%),
    linear-gradient(-34deg, transparent 49.2%, rgba(43, 33, 27, .68) 49.7%, rgba(43, 33, 27, .68) 50.5%, transparent 51%),
    rgba(255, 253, 248, .88);
  box-shadow: 0 14px 30px rgba(43, 33, 27, .18);
}

.skyline-hero .skyline-letter::before {
  position: absolute;
  right: 15px;
  bottom: 15px;
  left: 15px;
  height: 28px;
  content: "";
  border-top: 1.5px solid rgba(43, 33, 27, .68);
  transform: skewY(-22deg);
}

.skyline-hero .skyline-letter::after {
  position: absolute;
  top: 0;
  right: 0;
  width: 10px;
  height: 100%;
  content: "";
  background: linear-gradient(180deg, rgba(220, 255, 161, .96), rgba(220, 255, 161, .48));
}

@media (max-width: 580px) {
  .skyline-hero::after {
    top: -105px;
    right: -125px;
    width: 320px;
    height: 320px;
  }

  .skyline-hero .skyline-letter {
    top: 22px;
    right: 22px;
    transform: scale(.78);
    transform-origin: top right;
  }
}