.prize-intro {
  margin: 0 0 46px;
  padding: 28px 32px;
  color: #34423c;
  background: linear-gradient(110deg,#effbf6 0%,#fff 55%,#fff5f9 100%);
  border: 1px solid var(--line);
  border-left: 7px solid var(--pink);
  font-size: 16px;
  font-weight: 650;
  line-height: 1.9;
}

.prize-intro p { margin: 0; }

.prize-intro-kicker {
  margin-bottom: 7px !important;
  color: var(--green-dark);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .18em;
}

.prizepage-prize-1block {
  position: relative;
  margin: 0 0 42px;
  padding: 42px 38px 38px;
  overflow: hidden;
  text-align: center;
  background:
    radial-gradient(circle at 5% 2%,rgba(244,63,133,.08),transparent 28%),
    radial-gradient(circle at 96% 95%,rgba(22,159,202,.1),transparent 30%),
    linear-gradient(135deg,rgba(255,255,255,.99),rgba(246,253,250,.97));
  border: 1px solid rgba(17,159,48,.14);
  border-radius: 20px 5px 20px 5px;
  box-shadow: 0 18px 46px rgba(17,19,24,.09);
}

.prizepage-prize-1block::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 7px;
  background: linear-gradient(90deg,var(--pink) 0 27%,#1da4d1 27% 51%,var(--green) 51% 76%,#f0a126 76% 100%);
  content: "";
}

.prizepage-prize-1block::after {
  position: absolute;
  right: -38px;
  bottom: -38px;
  width: 200px;
  height: 100px;
  background: repeating-linear-gradient(90deg,rgba(17,159,48,.06) 0 13px,transparent 13px 27px);
  content: "";
  pointer-events: none;
  transform: rotate(-15deg);
}

.prizepage-prize-1block > * { position: relative; z-index: 1; }

.prizepage-prize-1block > br { display: none; }

.prize-company-img {
  display: block;
  width: min(400px,82%);
  height: 124px;
  margin: 4px auto 20px;
  object-fit: contain;
}

.prizepage-companyname {
  display: block;
  margin-bottom: 5px;
  color: var(--black);
  font-size: 21px;
  font-weight: 900;
  line-height: 1.5;
}

.textlink {
  display: inline-block;
  color: var(--green-dark);
  font-size: 13px;
  font-weight: 750;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prizepage-container {
  margin-top: 28px;
  text-align: left;
}

.acMenu2 { margin: 0; }

.acMenu2 dt {
  position: relative;
  margin: 9px 0 0;
  padding: 16px 56px 16px 17px;
  cursor: pointer;
  color: var(--black);
  background: rgba(255,255,255,.9);
  border: 1px solid rgba(17,159,48,.18);
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(17,19,24,.035);
  font-size: 15px;
  font-weight: 850;
  line-height: 1.65;
  text-align: left;
  transition: border-color .2s ease,background-color .2s ease;
}

.acMenu2 dt:hover,
.acMenu2 dt:focus-visible {
  background: #fff;
  border-color: rgba(17,159,48,.48);
  outline: none;
}

.acMenu2 dt.is-open { border-radius: 10px 10px 0 0; }

.acMenu2 dt::after {
  position: absolute;
  top: 50%;
  right: 18px;
  width: 25px;
  height: 25px;
  background-color: var(--green);
  background-image: linear-gradient(#fff,#fff),linear-gradient(#fff,#fff);
  background-position: center;
  background-repeat: no-repeat;
  background-size: 11px 2px,2px 11px;
  box-shadow: 0 0 0 rgba(17,159,48,0);
  content: "";
  transform: translateY(-50%);
  transition: background-color .2s ease,box-shadow .2s ease;
}

.acMenu2 dt.is-open::after {
  background-color: var(--green-dark);
  background-image: linear-gradient(#fff,#fff);
  background-size: 11px 2px;
  box-shadow: 0 3px 8px rgba(17,159,48,.16);
}

.acMenu2 dd {
  display: grid;
  grid-template-rows: 0fr;
  margin: 0;
  overflow: hidden;
  opacity: 0;
  color: #4c5550;
  background: #f2f8f5;
  border-right: 1px solid transparent;
  border-bottom: 1px solid transparent;
  border-left: 1px solid transparent;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.9;
  transition: grid-template-rows .38s cubic-bezier(.22,.8,.24,1),opacity .24s ease,border-color .24s ease;
}

.acMenu2 dt.is-open + dd {
  grid-template-rows: 1fr;
  opacity: 1;
  border-color: var(--line);
  border-radius: 0 0 10px 10px;
}

.prize-detail-clip { min-height: 0; overflow: hidden; }
.prize-detail-inner { padding: 20px 22px 23px; }

.prizepage-category {
  display: inline-flex;
  min-width: 112px;
  margin-right: 12px;
  padding: 6px 10px;
  align-items: center;
  justify-content: center;
  color: #fff;
  border-radius: 2px;
  font-size: 12px;
  font-weight: 900;
  line-height: 1.3;
  vertical-align: middle;
}

.sougou-active { background: #815d32; }
.sweet-active { background: #e5059c; }
.bitter-active { background: #02a0e9; }
.cherry-active { background: #02a641; }
.shiny-active { background: #fa735b; }
.passion-active { background: #e10914; }
.compass-active { background: #ff8808; }
.all-active { background: #c6024d; }
.takumi-active { background: #7c9b43; }
.U25-active { background: #cab45d; }
.liver-active { background: #000000; }

/* 実行委員会からの目玉プライズ */
.featured-organizer-prize {
  isolation: isolate;
  padding: 38px 34px 32px;
  background:
    radial-gradient(circle at 12% 0%,rgba(255,210,106,.2),transparent 34%),
    radial-gradient(circle at 92% 100%,rgba(17,159,48,.18),transparent 35%),
    linear-gradient(135deg,#111318 0%,#20252a 58%,#11251a 100%);
  border: 1px solid rgba(225,177,63,.78);
  border-radius: 18px 5px 18px 5px;
  box-shadow: 0 16px 38px rgba(17,19,24,.16),inset 0 0 0 1px rgba(255,255,255,.05);
}

.featured-organizer-prize::before {
  height: 6px;
  background: linear-gradient(90deg,#8c5c08 0%,#e6b743 24%,#fff0a8 50%,#d69a20 76%,#78500b 100%);
}

.featured-organizer-prize::after {
  right: -70px;
  bottom: -100px;
  width: 280px;
  height: 280px;
  background:
    radial-gradient(circle,transparent 0 42%,rgba(244,202,97,.08) 42.5% 43%,transparent 43.5% 56%,rgba(244,202,97,.1) 56.5% 57%,transparent 57.5%);
  border: 1px solid rgba(244,202,97,.12);
  border-radius: 50%;
  transform: none;
}

.featured-organizer-prize .prizepage-companyname {
  margin-bottom: 0;
  color: #fff;
  font-size: clamp(21px,2.2vw,28px);
  letter-spacing: .025em;
  text-shadow: 0 2px 14px rgba(0,0,0,.38);
}

.featured-organizer-prize .prizepage-companyname::before {
  display: block;
  margin-bottom: 7px;
  color: #efc45a;
  content: "FEATURED PRIZE";
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .3em;
  text-shadow: none;
}

.featured-organizer-prize .prizepage-container { margin-top: 24px; }

.featured-organizer-prize .acMenu2 dt {
  min-height: 72px;
  margin-top: 0;
  padding: 16px 58px 16px 18px;
  background: linear-gradient(135deg,#fffef8 0%,#fff7dc 64%,#f3dda0 100%);
  border: 1px solid rgba(213,163,42,.92);
  border-radius: 11px;
  box-shadow: 0 8px 20px rgba(0,0,0,.16),inset 0 1px 0 rgba(255,255,255,.85);
  font-size: clamp(16px,1.6vw,20px);
}

.featured-organizer-prize .acMenu2 dt:hover,
.featured-organizer-prize .acMenu2 dt:focus-visible {
  background: linear-gradient(135deg,#fff 0%,#fff9e8 62%,#f7e6b6 100%);
  border-color: #f0c75e;
}

.featured-organizer-prize .acMenu2 dt::after,
.featured-organizer-prize .acMenu2 dt.is-open::after {
  background-color: #9c6c0b;
  box-shadow: 0 4px 12px rgba(116,76,0,.28);
}

.featured-organizer-prize .sougou-active {
  padding: 6px 12px;
  background: linear-gradient(135deg,#75500a,#d7a52d);
  border: 1px solid rgba(255,238,175,.62);
  border-radius: 999px;
  box-shadow: 0 3px 9px rgba(105,68,0,.18);
}

.featured-organizer-prize .acMenu2 dd {
  color: #483b20;
  background: linear-gradient(180deg,#fff9e8 0%,#fffaf0 100%);
}

.featured-organizer-prize .acMenu2 dt.is-open {
  border-bottom-color: rgba(213,163,42,.28);
  border-radius: 11px 11px 0 0;
  box-shadow: 0 5px 14px rgba(0,0,0,.12);
}

.featured-organizer-prize .acMenu2 dt.is-open + dd {
  border-color: rgba(213,163,42,.48);
  border-radius: 0 0 11px 11px;
  box-shadow: 0 10px 22px rgba(0,0,0,.12);
}

@media (max-width: 680px) {
  .prizepage-prize-1block.featured-organizer-prize { padding: 34px 14px 18px; border-radius: 15px 4px 15px 4px; }
  .featured-organizer-prize .prizepage-companyname { font-size: 18px; line-height: 1.6; }
  .featured-organizer-prize .prizepage-companyname::before { margin-bottom: 5px; font-size: 9px; letter-spacing: .22em; }
  .featured-organizer-prize .prizepage-container { margin-top: 20px; }
  .featured-organizer-prize .acMenu2 dt { min-height: 0; padding: 14px 46px 14px 13px; font-size: 16px; }
  .featured-organizer-prize .sougou-active { padding: 6px 11px; }
}

@media (max-width: 680px) {
  .prize-intro {
    margin-bottom: 31px;
    padding: 22px 19px;
    border-left-width: 6px;
    font-size: 14px;
  }

  .prizepage-prize-1block {
    margin-bottom: 28px;
    padding: 38px 16px 20px;
  }

  .prize-company-img { width: min(290px,86%); height: 98px; margin-bottom: 16px; }
  .prizepage-companyname { font-size: 18px; }
  .textlink { max-width: 100%; overflow-wrap: anywhere; font-size: 12px; }
  .prizepage-container { margin-top: 22px; }

  .acMenu2 dt {
    padding: 14px 47px 14px 13px;
    font-size: 14px;
  }

  .acMenu2 dt::after { right: 12px; }

  .prizepage-category {
    display: flex;
    width: fit-content;
    min-width: 100px;
    margin: 0 0 8px;
  }

  .prize-detail-inner { padding: 17px 15px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  .acMenu2 dt,.acMenu2 dt::after,.acMenu2 dd { transition: none; }
}