/* Operational service diagram — adapted from the supplied four-node reference. */

.briefing-section .briefing-layout {
  display: block;
}

.briefing-section .briefing-intro {
  isolation: isolate;
  position: relative;
  inset-block-start: auto;
  display: flex;
  max-width: 54rem;
  min-height: clamp(17rem, 25vw, 23rem);
  margin-inline: auto;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-inline: 1rem;
  text-align: center;
}

.briefing-section .briefing-intro::before {
  position: absolute;
  z-index: -1;
  top: 50%;
  left: 50%;
  width: 100vw;
  overflow: hidden;
  color: rgb(12 49 82 / 0.04);
  content: attr(data-watermark);
  font-family: "IRANYekanX", "IRANSansX", sans-serif;
  font-size: clamp(3.2rem, 5.3vw, 6.5rem);
  font-weight: 700;
  line-height: 0.9;
  white-space: nowrap;
  pointer-events: none;
  transform: translate(-50%, -45%);
}

.briefing-section .briefing-intro .section-title {
  max-width: none;
  margin: 0 auto;
  color: #071d39;
  font-family: "IRANYekanX", "IRANSansX", sans-serif;
  font-size: clamp(2.35rem, 4.1vw, 4.8rem);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.045em;
}

.briefing-section .briefing-intro .section-lead {
  max-width: 47rem;
  margin: 1.1rem auto 0;
  color: #ae8615;
  font-size: clamp(0.88rem, 1.2vw, 1.08rem);
  font-weight: 700;
  line-height: 1.9;
}

.briefing-section .briefing-intro .section-lead::after {
  display: block;
  width: 4.75rem;
  height: 3px;
  margin: 1.15rem auto 0;
  background: #d6a516;
  content: "";
}

.briefing-groups--legacy {
  display: none;
}

.service-diagram {
  --diagram-blue: #0d6fc2;
  --diagram-blue-dark: #073b68;
  --diagram-cyan: #48baf2;
  --diagram-line: rgb(31 93 135 / 0.26);
  position: relative;
  display: grid;
  max-width: 76rem;
  min-height: 39rem;
  margin: clamp(3rem, 6vw, 5.5rem) auto 0;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-template-rows: 12rem 1fr;
  gap: 0 clamp(1.35rem, 3.4vw, 3.25rem);
  direction: rtl;
}

.service-diagram__core {
  position: relative;
  z-index: 3;
  grid-column: 2 / 4;
  grid-row: 1;
  align-self: start;
  justify-self: center;
  text-align: center;
}

.service-diagram__core-ring,
.service-output__icon {
  display: grid;
  border-radius: 50%;
  place-items: center;
}

.service-diagram__core-ring {
  width: 8.8rem;
  border: 0.7rem solid #e2e8ec;
  background: #fff;
  box-shadow: 0 5px 12px rgb(8 48 79 / 0.2), inset 0 0 0 1px rgb(10 61 100 / 0.08);
  color: #74a928;
  font-size: 3.35rem;
  aspect-ratio: 1;
}

.service-diagram__core small {
  display: block;
  margin-top: 0.6rem;
  color: var(--diagram-blue-dark);
  font-size: 0.76rem;
  font-weight: 700;
}

.service-diagram__rail {
  position: absolute;
  z-index: 0;
  top: 6.35rem;
  right: 12.5%;
  left: 12.5%;
  height: 8.7rem;
  border-top: 1px dashed var(--diagram-line);
  border-right: 1px dashed var(--diagram-line);
  border-left: 1px dashed var(--diagram-line);
  pointer-events: none;
}

.service-diagram__rail::before,
.service-diagram__rail::after {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  border-left: 1px dashed var(--diagram-line);
  content: "";
}

.service-diagram__rail::before {
  left: 33.333%;
}

.service-diagram__rail::after {
  right: 33.333%;
}

.service-output {
  position: relative;
  z-index: 2;
  grid-row: 2;
  align-self: start;
  padding-inline: 0.35rem;
  text-align: center;
}

.service-output--plan { grid-column: 4; }
.service-output--handoff { grid-column: 3; }
.service-output--delivery { grid-column: 2; }
.service-output--fleet { grid-column: 1; }

.service-output__icon {
  width: clamp(7.1rem, 9vw, 8.25rem);
  margin: 0 auto 1.15rem;
  border: clamp(0.8rem, 1vw, 1rem) solid var(--diagram-blue);
  background: #fff;
  box-shadow:
    0 0 0 0.35rem #dce4e9,
    0 6px 13px rgb(8 50 84 / 0.22),
    inset 0 0 0 1px rgb(6 60 101 / 0.14);
  color: var(--diagram-blue);
  font-size: clamp(2.35rem, 3vw, 3rem);
  aspect-ratio: 1;
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.service-output:is(:hover, :focus-within) .service-output__icon {
  box-shadow:
    0 0 0 0.35rem #dce4e9,
    0 10px 24px rgb(8 74 125 / 0.25),
    inset 0 0 0 1px rgb(6 60 101 / 0.14);
  transform: translateY(-0.35rem);
}

.service-output h3 {
  margin: 0;
  color: #071d39;
  font-size: clamp(1.15rem, 1.65vw, 1.45rem);
  font-weight: 700;
  line-height: 1.45;
}

.service-output p {
  margin: 0.65rem auto 0;
  color: #3c5b77;
  font-size: clamp(0.84rem, 1vw, 0.94rem);
  line-height: 2;
  text-align: justify;
  text-align-last: center;
}

@media (max-width: 64rem) {
  .service-diagram {
    max-width: 48rem;
    min-height: auto;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: 11rem repeat(2, auto);
    gap: 3.5rem 3rem;
  }

  .service-diagram__core {
    grid-column: 1 / -1;
  }

  .service-diagram__rail {
    right: 25%;
    left: 25%;
    height: 25rem;
  }

  .service-diagram__rail::before {
    left: 50%;
  }

  .service-diagram__rail::after {
    display: none;
  }

  .service-output--plan { grid-column: 2; grid-row: 2; }
  .service-output--handoff { grid-column: 1; grid-row: 2; }
  .service-output--delivery { grid-column: 2; grid-row: 3; }
  .service-output--fleet { grid-column: 1; grid-row: 3; }
}

@media (max-width: 40rem) {
  .briefing-section .briefing-intro {
    min-height: 20rem;
    padding-inline: 0;
  }

  .briefing-section .briefing-intro::before {
    font-size: clamp(3rem, 12vw, 4.3rem);
  }

  .briefing-section .briefing-intro .section-title {
    max-width: 14ch;
    font-size: clamp(2rem, 9vw, 3rem);
  }

  .briefing-section .briefing-intro .section-lead {
    max-width: 32rem;
    font-size: 0.86rem;
  }

  .service-diagram {
    display: flex;
    max-width: 27rem;
    flex-direction: column;
    gap: 2.75rem;
    padding-inline-start: 2.25rem;
  }

  .service-diagram__core {
    align-self: center;
  }

  .service-diagram__core-ring {
    width: 7.4rem;
    font-size: 2.85rem;
  }

  .service-diagram__rail {
    top: 7rem;
    right: auto;
    bottom: 3.5rem;
    left: 0.8rem;
    width: 1px;
    height: auto;
    border: 0;
    border-left: 1px dashed var(--diagram-line);
  }

  .service-diagram__rail::before,
  .service-diagram__rail::after {
    display: none;
  }

  .service-output {
    display: grid;
    grid-template-columns: 5.6rem minmax(0, 1fr);
    column-gap: 1.15rem;
    padding: 0;
    text-align: start;
  }

  .service-output__icon {
    width: 5rem;
    grid-column: 1;
    grid-row: 1 / 3;
    margin: 0;
    border-width: 0.55rem;
    font-size: 1.8rem;
  }

  .service-output h3,
  .service-output p {
    grid-column: 2;
    text-align: start;
    text-align-last: auto;
  }

  .service-output p {
    margin-top: 0.35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .service-output__icon {
    transition: none;
  }
}