.dredge-finding {
  border-color: #8b7350;
  background: #f2eadc;
}

.dredge-explainer {
  --dredge-ink: #17211d;
  --dredge-deep: #203b35;
  --dredge-water: #557f83;
  --dredge-water-light: #9bb8b5;
  --dredge-sand: #c4a477;
  --dredge-ivory: #f7f2e8;
  margin: 2.6rem 0 3rem;
  padding: 1.25rem;
  overflow: hidden;
  color: var(--dredge-ink);
  background: var(--dredge-ivory);
  border: 1px solid rgba(23, 33, 29, .18);
  border-radius: 18px;
  box-shadow: 0 22px 50px rgba(44, 38, 29, .08);
}

.dredge-explainer:focus-visible,
.dredge-controls button:focus-visible {
  outline: 3px solid #b56835;
  outline-offset: 3px;
}

.dredge-head {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(13rem, .8fr);
  gap: 1.5rem;
  align-items: end;
  padding: .3rem .25rem 1.1rem;
  border-bottom: 1px solid rgba(23, 33, 29, .16);
}

.dredge-head h3 {
  max-width: 24ch;
  margin: .3rem 0 0;
  font-size: clamp(1.4rem, 3vw, 2.25rem);
  line-height: 1.05;
  letter-spacing: -.035em;
}

.dredge-head p {
  margin: 0;
  color: #5a615c;
  font-size: .9rem;
  line-height: 1.45;
}

.dredge-eyebrow {
  color: #765c3d;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .13em;
}

.dredge-stage {
  position: relative;
  min-height: 360px;
  margin: 1rem 0;
  overflow: hidden;
  background: #e7ddd0;
  border-radius: 14px;
  isolation: isolate;
}

.dredge-sky {
  position: absolute;
  inset: 0 0 58%;
  background: linear-gradient(155deg, #ede5d7, #d6c7b2);
}

.dredge-authority {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: .35rem .5rem;
  color: #f9f5ec;
  background: var(--dredge-deep);
  border-radius: 4px;
  font-size: .58rem;
  font-weight: 700;
  letter-spacing: .11em;
}

.dredge-water {
  position: absolute;
  inset: 42% 0 25%;
  overflow: hidden;
  background:
    repeating-linear-gradient(175deg, rgba(255,255,255,.08) 0 2px, transparent 2px 15px),
    linear-gradient(#76999a, #436e73);
  border-top: 2px solid rgba(255,255,255,.65);
}

.dredge-bed {
  position: absolute;
  inset: 75% 0 0;
  background: linear-gradient(170deg, #ae8b5f 0 34%, #816849 34% 100%);
}

.dredge-bank {
  position: absolute;
  left: 38%;
  bottom: 0;
  width: 43%;
  height: 90%;
  background: #c7a979;
  border-radius: 70% 36% 0 0;
  transform-origin: bottom center;
  transition: height 900ms cubic-bezier(.2,.75,.2,1), transform 900ms cubic-bezier(.2,.75,.2,1), opacity 500ms ease;
}

.dredge-target {
  position: absolute;
  left: 44%;
  bottom: 13%;
  width: 29%;
  height: 66%;
  border: 2px dashed #fff4d9;
  border-radius: 50%;
  opacity: 0;
  transform: scale(.78);
  transition: opacity 350ms ease, transform 500ms ease;
}

.dredge-ship,
.dredge-vessel {
  position: absolute;
  bottom: -9px;
  z-index: 3;
  width: 105px;
  height: 35px;
  transition: transform 900ms cubic-bezier(.2,.75,.2,1), opacity 500ms ease;
}

.dredge-ship { left: 6%; transform: translateX(-115%); opacity: .55; }
.dredge-vessel { left: 68%; opacity: .18; }
.dredge-ship::after,
.dredge-vessel::after {
  content: '';
  position: absolute;
  inset: 17px 0 0;
  background: #30443f;
  clip-path: polygon(0 0, 100% 0, 84% 100%, 17% 100%);
}
.dredge-ship i,
.dredge-vessel i {
  position: absolute;
  left: 35px;
  bottom: 17px;
  width: 35px;
  height: 18px;
  background: #f5ecdd;
  border: 2px solid #30443f;
}
.dredge-ship b,
.dredge-vessel b {
  position: absolute;
  left: 50px;
  bottom: 35px;
  width: 3px;
  height: 16px;
  background: #30443f;
}
.dredge-vessel em {
  position: absolute;
  left: 18px;
  bottom: -72px;
  z-index: 4;
  width: 3px;
  height: 88px;
  background: #d8c39d;
  transform: rotate(10deg);
  transform-origin: top;
}

.dredge-sonar {
  position: absolute;
  left: 29%;
  top: -3px;
  width: 2px;
  height: 105%;
  background: rgba(255,246,216,.75);
  box-shadow: 0 0 14px #fff1bd;
  opacity: 0;
}

.dredge-depth {
  position: absolute;
  right: 1rem;
  top: .75rem;
  display: grid;
  justify-items: end;
  color: #fff9ed;
}
.dredge-depth b { font-size: 1.35rem; }
.dredge-depth small { color: rgba(255,255,255,.7); font-size: .52rem; letter-spacing: .08em; }

.dredge-file {
  position: absolute;
  left: 1rem;
  top: 1rem;
  z-index: 5;
  display: grid;
  width: min(46%, 310px);
  padding: .75rem;
  color: #fff9ed;
  background: rgba(27,45,40,.92);
  border-left: 3px solid var(--dredge-sand);
  box-shadow: 0 8px 18px rgba(25,30,26,.18);
}
.dredge-file > span { color: #d4c09a; font-size: .56rem; font-weight: 700; letter-spacing: .1em; }
.dredge-file strong { margin-top: .3rem; font-size: .82rem; }
.dredge-file small { margin-top: .2rem; color: #bdcfca; font-size: .69rem; }

.dredge-metrics {
  position: absolute;
  z-index: 5;
  left: 1rem;
  right: 1rem;
  bottom: .85rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .45rem;
}
.dredge-metrics div {
  min-width: 0;
  padding: .6rem .7rem;
  background: rgba(247,242,232,.91);
  border: 1px solid rgba(32,59,53,.2);
  border-radius: 6px;
}
.dredge-metrics span { display: block; color: #655e54; font-size: .54rem; text-transform: uppercase; letter-spacing: .06em; }
.dredge-metrics strong { display: block; margin-top: .18rem; font-size: .78rem; line-height: 1.2; }

.dredge-stage[data-state="0"] .dredge-sonar,
.dredge-stage[data-state="3"] .dredge-sonar { opacity: .92; animation: dredge-scan 2.4s ease-in-out infinite alternate; }
.dredge-stage[data-state="1"] .dredge-target { opacity: 1; transform: scale(1); }
.dredge-stage[data-state="2"] .dredge-target { opacity: .55; transform: scale(1); }
.dredge-stage[data-state="2"] .dredge-vessel { opacity: 1; animation: dredge-work 3.5s ease-in-out infinite alternate; }
.dredge-stage[data-state="2"] .dredge-bank,
.dredge-stage[data-state="3"] .dredge-bank,
.dredge-stage[data-state="4"] .dredge-bank { height: 49%; transform: scaleX(.86); }
.dredge-stage[data-state="3"] .dredge-vessel { opacity: .45; transform: translateX(20%); }
.dredge-stage[data-state="4"] .dredge-ship { opacity: 1; transform: translateX(145%); }
.dredge-stage[data-state="4"] .dredge-depth b { color: #e4d19f; }

.dredge-explainer.is-paused *,
.dredge-explainer.is-paused *::before,
.dredge-explainer.is-paused *::after { animation-play-state: paused !important; }

@keyframes dredge-scan {
  from { transform: translateX(-45px); }
  to { transform: translateX(245px); }
}
@keyframes dredge-work {
  from { transform: translateX(-30px); }
  to { transform: translateX(38px); }
}

.dredge-track {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: .35rem;
  margin: 1rem 0;
  padding: 0;
  list-style: none;
}
.dredge-track li {
  min-width: 0;
  padding: .75rem .6rem;
  background: #ede5d7;
  border: 1px solid transparent;
  border-radius: 9px;
  transition: background 300ms ease, transform 300ms ease, border-color 300ms ease;
}
.dredge-track li.is-past { background: #dce4dd; }
.dredge-track li.is-active { background: #fffaf0; border-color: #866b49; transform: translateY(-4px); }
.dredge-track b,.dredge-track strong,.dredge-track small { display: block; }
.dredge-track b { color: #8b7252; font-size: .63rem; letter-spacing: .08em; }
.dredge-track strong { margin-top: .25rem; font-size: .8rem; }
.dredge-track small { margin-top: .2rem; color: #66645f; font-size: .65rem; line-height: 1.25; }

.dredge-live {
  min-height: 108px;
  padding: 1rem 1.1rem;
  background: #fffaf0;
  border-left: 4px solid var(--dredge-water);
}
.dredge-live > span { color: #826846; font-size: .61rem; font-weight: 700; letter-spacing: .1em; }
.dredge-live strong { display: block; margin: .3rem 0; font-size: 1rem; }
.dredge-live p { margin: 0; color: #505650; font-size: .83rem; line-height: 1.5; }

.dredge-controls { display: flex; flex-wrap: wrap; gap: .45rem; align-items: center; margin-top: .75rem; }
.dredge-controls[hidden] { display: none; }
.dredge-controls button {
  padding: .55rem .75rem;
  color: var(--dredge-ink);
  background: transparent;
  border: 1px solid rgba(23,33,29,.35);
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  font-size: .72rem;
  font-weight: 600;
}
.dredge-controls button:hover { background: #e8decc; }
.dredge-controls > span { margin-left: auto; color: #716f68; font-size: .72rem; }

.dredge-state-copy {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: .55rem;
  margin: 1.1rem 0 .5rem;
  padding: 0;
  list-style: none;
}
.dredge-state-copy li { padding-top: .65rem; border-top: 2px solid #c8b18d; }
.dredge-state-copy strong,.dredge-state-copy span { display: block; }
.dredge-state-copy strong { font-size: .72rem; }
.dredge-state-copy span { margin-top: .25rem; color: #65635e; font-size: .66rem; line-height: 1.4; }
.dredge-explainer figcaption { margin: 1rem .2rem .1rem; color: #66645f; font-size: .72rem; line-height: 1.45; }

@media (max-width: 700px) {
  .dredge-explainer { margin-inline: -.5rem; padding: .8rem; border-radius: 12px; }
  .dredge-head { grid-template-columns: 1fr; gap: .7rem; }
  .dredge-stage { min-height: 420px; }
  .dredge-file { width: calc(100% - 2rem); }
  .dredge-ship,.dredge-vessel { width: 80px; }
  .dredge-metrics { grid-template-columns: 1fr; }
  .dredge-metrics div { display: grid; grid-template-columns: 1fr 1.1fr; align-items: center; }
  .dredge-metrics strong { margin: 0; text-align: right; }
  .dredge-track { grid-template-columns: 1fr; }
  .dredge-track li { display: grid; grid-template-columns: 2rem 5.5rem 1fr; gap: .3rem; align-items: center; }
  .dredge-track strong,.dredge-track small { margin: 0; }
  .dredge-state-copy { grid-template-columns: 1fr; }
  .dredge-state-copy li { display: grid; grid-template-columns: 7.5rem 1fr; gap: .6rem; }
  .dredge-state-copy span { margin: 0; }
  .dredge-controls > span { width: 100%; margin: .2rem 0 0; }
}

@media (prefers-reduced-motion: reduce) {
  .dredge-explainer *, .dredge-explainer *::before, .dredge-explainer *::after {
    scroll-behavior: auto !important;
    animation: none !important;
    transition: none !important;
  }
}