/* 支持与联系：仅合法构建显示；平台包 data-support="off" 时整块隐藏 */
html:not([data-support="on"]) .support-entry {
  display: none !important;
}

.support {
  position: fixed;
  inset: 0;
  z-index: 600;
  display: grid;
  place-items: center;
  padding: 16px;
}

.support[hidden] {
  display: none !important;
}

.support__mask {
  position: absolute;
  inset: 0;
  background: rgba(4, 3, 2, .82);
  backdrop-filter: blur(4px);
}

.support__panel {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  width: min(430px, calc(100vw - 28px));
  max-height: min(88dvh, 640px);
  overflow: hidden;
  padding: 24px 24px 20px;
  text-align: center;
  color: var(--paper);
  background:
    linear-gradient(180deg, rgba(43, 32, 21, .98), rgba(12, 9, 7, .99));
  border: 1px solid rgba(200, 163, 90, .5);
  box-shadow: 0 0 40px rgba(0, 0, 0, .75), 0 0 0 1px rgba(255, 228, 172, .06) inset;
}

.support__panel::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -1px;
  width: 46%;
  height: 1px;
  transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, rgba(240, 200, 130, .9), transparent);
}

.support__close {
  position: absolute;
  top: 5px;
  right: 7px;
  z-index: 2;
  width: 34px;
  height: 34px;
  padding: 0;
  font-size: 24px;
  line-height: 1;
  color: rgba(232, 214, 172, .6);
  background: none;
  border: 0;
}

.support__close:hover {
  color: var(--gold);
}

.support__header {
  flex: 0 0 auto;
}

.support__title {
  margin: 4px 0 8px;
  font-size: 17px;
  font-weight: 400;
  letter-spacing: .16em;
  color: var(--paper);
}

.support__lead {
  margin: 0 0 14px;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .06em;
  color: rgba(232, 214, 172, .62);
}

/* 只有二维码区域会滚；QQ 行固定在底部 */
.support__body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-right: 2px;
  scrollbar-width: thin;
  scrollbar-color: rgba(200, 163, 90, .55) transparent;
}

.support__body::-webkit-scrollbar {
  width: 6px;
}

.support__body::-webkit-scrollbar-track {
  background: transparent;
}

.support__body::-webkit-scrollbar-thumb {
  background: rgba(200, 163, 90, .55);
  border-radius: 3px;
}

.support__qr-wrap {
  width: min(220px, 74vw);
  margin: 0 auto;
  padding: 8px;
  background: #fff;
  border: 1px solid rgba(200, 163, 90, .55);
}

.support__qr {
  display: block;
  width: 100%;
  height: auto;
}

.support__caption {
  margin: 7px 0 10px;
  font-size: 11px;
  letter-spacing: .12em;
  color: rgba(200, 163, 90, .65);
}

.support__footer {
  flex: 0 0 auto;
  padding-top: 8px;
  border-top: 1px solid rgba(200, 163, 90, .22);
}

.support__scroll-hint {
  display: none;
  margin: 0 0 5px;
  font-size: 10px;
  letter-spacing: .06em;
  color: rgba(200, 163, 90, .55);
}

.support__panel.is-scrollable .support__scroll-hint {
  display: block;
}

.support__qq {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 12px;
  color: rgba(232, 214, 172, .7);
}

.support__qq code {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--gold);
}

.support__copy {
  padding: 3px 9px;
  font: inherit;
  font-size: 11px;
  letter-spacing: .08em;
  color: rgba(232, 214, 172, .8);
  background: rgba(200, 163, 90, .08);
  border: 1px solid rgba(200, 163, 90, .35);
}

.support__copy:hover {
  color: var(--gold);
  border-color: var(--gold);
}

.support__status {
  min-height: 1.4em;
  margin: 5px 0 0;
  font-size: 11px;
  letter-spacing: .08em;
  color: rgba(200, 163, 90, .75);
}

/* 真结局收尾页：不抢主按钮，只留一行低存在感入口 */
.epilogue__support {
  display: block;
  margin: 14px auto 0;
  padding: 2px 8px;
  font: inherit;
  font-size: 12px;
  letter-spacing: .1em;
  color: rgba(200, 163, 90, .48);
  background: none;
  border: 0;
}

.epilogue__support:hover {
  color: var(--gold);
}

/* 手机横屏：二维码在左，文案与 QQ 在右，QQ 首屏始终可见 */
@media (max-height: 420px) {
  .support {
    padding: 8px;
  }

  .support__panel {
    display: grid;
    grid-template-columns: 124px minmax(0, 1fr);
    grid-template-areas:
      "body header"
      "body footer";
    align-content: center;
    align-items: stretch;
    gap: 6px 14px;
    width: min(580px, calc(100vw - 24px));
    max-height: 94dvh;
    padding: 14px 16px 12px;
  }

  .support__header {
    grid-area: header;
    align-self: end;
    padding-right: 30px;
    text-align: left;
  }

  .support__title {
    margin: 0 0 4px;
    font-size: 15px;
    letter-spacing: .1em;
  }

  .support__lead {
    margin: 0;
    font-size: 11px;
    line-height: 1.55;
    letter-spacing: .04em;
  }

  .support__body {
    grid-area: body;
    align-self: center;
    max-height: 100%;
    padding-right: 0;
  }

  .support__qr-wrap {
    width: 120px;
    padding: 5px;
  }

  .support__caption {
    margin: 4px 0 0;
    font-size: 10px;
  }

  .support__footer {
    grid-area: footer;
    align-self: start;
    padding-top: 6px;
    border-top: 0;
    text-align: left;
  }

  .support__qq {
    justify-content: flex-start;
    gap: 6px;
    font-size: 11px;
  }

  .support__qq code {
    font-size: 12px;
  }

  .support__copy {
    font-size: 10px;
  }

  .support__status {
    margin-top: 3px;
    text-align: left;
  }

  .support__scroll-hint {
    text-align: left;
  }
}