/* 阅后即焚 · 统一暗色余烬主题 */

:root {
  --bg: #0c0d10;
  --bg-2: #12141a;
  --card: rgba(255, 255, 255, 0.038);
  --card-2: rgba(255, 255, 255, 0.065);
  --line: rgba(255, 255, 255, 0.10);
  --line-2: rgba(255, 255, 255, 0.20);
  --tx: #ecebe8;
  --tx-2: #a9a6a1;
  --tx-3: #6e6c68;
  --ember: #ff7a3d;
  --ember-2: #ffab6b;
  --ok: #5dc48b;
  --warn: #e8b23c;
  --bad: #e2604f;
  --r: 14px;
  --r-sm: 10px;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  background-image:
    radial-gradient(900px 420px at 50% -140px, rgba(255, 122, 61, 0.13), transparent 70%),
    radial-gradient(700px 360px at 12% 110%, rgba(255, 122, 61, 0.05), transparent 70%);
  background-repeat: no-repeat;
  color: var(--tx);
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--ember-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 780px; margin: 0 auto; padding: 34px 20px 72px; }
.wrap.narrow { max-width: 620px; }

/* ---------------------------------------------------------------- 页头 */

.hdr {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 26px;
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 13px; }

.brand-mark {
  width: 42px; height: 42px;
  flex: 0 0 42px;
  border-radius: 12px;
  background: linear-gradient(150deg, rgba(255, 122, 61, 0.24), rgba(255, 122, 61, 0.05));
  border: 1px solid rgba(255, 122, 61, 0.28);
  display: grid; place-items: center;
}

.brand h1 { margin: 0; font-size: 19px; font-weight: 600; letter-spacing: 0.4px; }
.brand p { margin: 2px 0 0; font-size: 12.5px; color: var(--tx-3); }

/* ---------------------------------------------------------------- 卡片 */

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 20px;
  margin-bottom: 16px;
}

.card-title {
  margin: 0 0 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--tx-2);
  display: flex; align-items: center; gap: 8px;
}

/* ------------------------------------------------------------ 拖拽上传 */

.drop {
  border: 1.5px dashed var(--line-2);
  border-radius: var(--r);
  padding: 34px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color .18s, background .18s, transform .18s;
}

.drop:hover { border-color: rgba(255, 122, 61, 0.5); background: rgba(255, 122, 61, 0.035); }
.drop.dragover {
  border-color: var(--ember);
  background: rgba(255, 122, 61, 0.09);
  transform: scale(1.008);
}

.drop-icon { display: block; margin: 0 auto 12px; opacity: .85; }
.drop-title { margin: 0; font-size: 15px; }
.drop-sub { margin: 7px 0 0; font-size: 12.5px; color: var(--tx-3); }
.link { color: var(--ember-2); text-decoration: underline; }

/* ---------------------------------------------------------------- 表单 */

.field { margin-bottom: 16px; }
.field:last-child { margin-bottom: 0; }

.field > label {
  display: flex; align-items: baseline; gap: 8px;
  font-size: 13px; font-weight: 600; color: var(--tx-2);
  margin-bottom: 7px;
}
.hint { font-size: 11.5px; font-weight: 400; color: var(--tx-3); }

input[type="text"], input[type="number"], input[type="password"], textarea, select {
  width: 100%;
  background: rgba(0, 0, 0, 0.32);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  color: var(--tx);
  padding: 10px 12px;
  font: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color .16s, box-shadow .16s;
}

input:focus, textarea:focus, select:focus {
  border-color: rgba(255, 122, 61, 0.62);
  box-shadow: 0 0 0 3px rgba(255, 122, 61, 0.12);
}

textarea { resize: vertical; min-height: 74px; line-height: 1.65; }
select { appearance: none; cursor: pointer; padding-right: 34px;
  background-image: linear-gradient(45deg, transparent 50%, var(--tx-3) 50%), linear-gradient(135deg, var(--tx-3) 50%, transparent 50%);
  background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }

/* ---------------------------------------------------------------- 按钮 */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  padding: 10px 18px;
  font: inherit; font-size: 14px; font-weight: 600;
  cursor: pointer;
  transition: filter .16s, background .16s, border-color .16s, opacity .16s;
  white-space: nowrap;
}

.btn.primary {
  background: linear-gradient(180deg, var(--ember), #e8622a);
  color: #1a0d05;
  width: 100%;
  padding: 12px 18px;
  font-size: 15px;
}
.btn.primary:hover { filter: brightness(1.08); }
.btn.primary.wide-ok { background: linear-gradient(180deg, #4fbf85, #38a06b); color: #05170e; }

.btn.ghost {
  background: var(--card-2);
  border-color: var(--line);
  color: var(--tx);
  width: auto;
}
.btn.ghost:hover { border-color: var(--line-2); background: rgba(255, 255, 255, 0.09); }

.btn.danger { background: rgba(226, 96, 79, 0.16); border-color: rgba(226, 96, 79, 0.45); color: #ff9d8c; width: auto; }
.btn.danger:hover { background: rgba(226, 96, 79, 0.26); }

.btn.small { padding: 6px 12px; font-size: 12.5px; font-weight: 500; }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }

/* ------------------------------------------------------------ 文件列表 */

.files { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 8px; }
.files:empty { display: none; }

.file-row {
  display: flex; align-items: center; gap: 11px;
  background: rgba(0, 0, 0, 0.26);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 9px 12px;
}

.file-kind {
  flex: 0 0 30px; height: 30px;
  border-radius: 8px;
  display: grid; place-items: center;
  font-size: 10.5px; font-weight: 700; letter-spacing: .3px;
  background: rgba(255, 122, 61, 0.14);
  color: var(--ember-2);
  border: 1px solid rgba(255, 122, 61, 0.25);
}

.file-name { flex: 1 1 auto; min-width: 0; font-size: 13.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-size { flex: 0 0 auto; font-size: 12px; color: var(--tx-3); font-variant-numeric: tabular-nums; }

.file-del {
  flex: 0 0 auto; border: 0; background: transparent; cursor: pointer;
  color: var(--tx-3); font-size: 17px; line-height: 1; padding: 3px 5px; border-radius: 6px;
}
.file-del:hover { color: var(--bad); background: rgba(226, 96, 79, 0.12); }

/* ---------------------------------------------------------------- 结果 */

.result { border-color: rgba(255, 122, 61, 0.34); background: rgba(255, 122, 61, 0.055); }
.result-head { display: flex; align-items: center; gap: 9px; margin-bottom: 15px; font-size: 15px; font-weight: 600; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); flex: 0 0 8px; box-shadow: 0 0 0 4px rgba(93, 196, 139, 0.16); }

.copyrow { display: flex; gap: 8px; margin-bottom: 10px; }
.copyrow input { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12.5px; }
.copyrow .btn { flex: 0 0 auto; width: auto; }

.notice {
  margin-top: 14px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--warn);
  background: rgba(232, 178, 60, 0.09);
  border: 1px solid rgba(232, 178, 60, 0.28);
  border-radius: var(--r-sm);
  padding: 10px 12px;
}

.notice.info { color: var(--tx-2); background: rgba(255, 255, 255, 0.04); border-color: var(--line); }
.notice.bad { color: #ff9d8c; background: rgba(226, 96, 79, 0.09); border-color: rgba(226, 96, 79, 0.3); }

/* ---------------------------------------------------------------- 进度 */

.bar { margin-top: 14px; height: 6px; border-radius: 99px; background: rgba(0, 0, 0, 0.4); overflow: hidden; }
.bar-in { height: 100%; width: 0; border-radius: 99px; background: linear-gradient(90deg, var(--ember), var(--ember-2)); transition: width .2s; }
.bar-txt { margin: 7px 0 0; font-size: 12px; color: var(--tx-3); text-align: center; }

/* ------------------------------------------------------------ 徽章/统计 */

.badges { display: flex; flex-wrap: wrap; gap: 8px; }

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12.5px;
  padding: 5px 11px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid var(--line);
  color: var(--tx-2);
}
.badge b { color: var(--tx); font-weight: 600; font-variant-numeric: tabular-nums; }
.badge.ember { background: rgba(255, 122, 61, 0.13); border-color: rgba(255, 122, 61, 0.3); color: var(--ember-2); }
.badge.ember b { color: var(--ember-2); }
.badge.ok { background: rgba(93, 196, 139, 0.13); border-color: rgba(93, 196, 139, 0.3); color: #8ddcae; }
.badge.ok b { color: #8ddcae; }
.badge.bad { background: rgba(226, 96, 79, 0.13); border-color: rgba(226, 96, 79, 0.32); color: #ff9d8c; }
.badge.bad b { color: #ff9d8c; }

/* ------------------------------------------------------------ 分享页 */

.share-hero { text-align: center; padding: 12px 0 22px; }
.share-count {
  font-size: 62px; font-weight: 700; line-height: 1;
  color: var(--ember-2);
  font-variant-numeric: tabular-nums;
  letter-spacing: -2px;
}
.share-count.small { font-size: 44px; }
.share-count-label { margin: 10px 0 0; font-size: 13.5px; color: var(--tx-3); }

.meta-line { margin: 14px 0 0; font-size: 12.5px; color: var(--tx-3); text-align: center; }

.content-text {
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 14.5px;
  line-height: 1.8;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 14px 16px;
  margin-bottom: 4px;
  max-height: 420px;
  overflow: auto;
}

.preview {
  margin-top: 12px;
  border-radius: var(--r-sm);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #000;
  display: grid; place-items: center;
}
.preview img, .preview video { max-width: 100%; max-height: 440px; display: block; }
.preview audio { width: 100%; display: block; }

.file-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }

/* ------------------------------------------------------------ 访问记录 */

.views { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; max-height: 260px; overflow: auto; }
.views li {
  display: flex; gap: 10px; align-items: baseline;
  font-size: 12.5px; color: var(--tx-2);
  background: rgba(0, 0, 0, 0.24);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 7px 11px;
}
.views .t { flex: 0 0 auto; font-variant-numeric: tabular-nums; color: var(--tx-3); }
.views .ip { flex: 0 0 auto; font-family: ui-monospace, Menlo, Consolas, monospace; }
.views .ua { flex: 1 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--tx-3); }

/* ------------------------------------------------------------ 我的分享 */

.mine { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.mine li {
  display: flex; align-items: center; gap: 12px;
  background: rgba(0, 0, 0, 0.24);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 10px 12px;
}
.mine .id { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12.5px; color: var(--tx-2); flex: 0 0 auto; }
.mine .when { font-size: 12px; color: var(--tx-3); flex: 1 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------------------------------------------------------------- 杂项 */

.hidden { display: none !important; }
.muted { color: var(--tx-3); font-size: 12.5px; }
.center { text-align: center; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.spacer { flex: 1 1 auto; }

.toast {
  position: fixed; left: 50%; bottom: 34px; transform: translateX(-50%) translateY(14px);
  background: #1d2027; border: 1px solid var(--line-2);
  color: var(--tx);
  padding: 10px 18px; border-radius: 99px;
  font-size: 13.5px; box-shadow: 0 12px 40px rgba(0, 0, 0, .55);
  opacity: 0; pointer-events: none;
  transition: opacity .22s, transform .22s;
  z-index: 50;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ------------------------------------------------------------ 失效页 */

.page-gone .gone-wrap {
  max-width: 560px; margin: 0 auto;
  padding: 40px 20px 80px;
  text-align: center;
}

.gone-art { margin: 0 auto 4px; max-width: 420px; }
.gone-art svg { width: 100%; height: auto; display: block; }

.gone-tag {
  display: inline-block;
  margin: 0 0 12px;
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 12px; letter-spacing: 3px;
  color: var(--tx-3);
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: 3px 14px;
}

.gone-title { margin: 0 0 12px; font-size: 27px; font-weight: 700; letter-spacing: 3px; }
.gone-desc { margin: 0 0 26px; font-size: 14px; color: var(--tx-2); line-height: 1.85; }

.gone-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.gone-actions .btn.primary { width: auto; padding: 10px 22px; }

.gone-meta { margin: 30px 0 0; font-size: 12px; color: var(--tx-3); font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------- 次数点选控件 */

.pick {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.pick-item {
  -webkit-appearance: none;
  appearance: none;
  font: inherit;
  font-size: 16px;
  font-weight: 600;
  color: var(--tx-2);
  background: rgba(0, 0, 0, 0.32);
  border: 1.5px solid var(--line);
  border-radius: var(--r-sm);
  /* 手机点按目标不低于 48px，手指才不容易点空 */
  min-height: 50px;
  cursor: pointer;
  transition: background .16s, border-color .16s, color .16s, transform .1s;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.pick-item:hover { border-color: var(--line-2); }
.pick-item:active { transform: scale(0.97); }

.pick-item.on {
  background: linear-gradient(180deg, rgba(255, 122, 61, 0.22), rgba(255, 122, 61, 0.1));
  border-color: var(--ember);
  color: var(--ember-2);
}

.custom-num {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
}

.custom-num-label {
  flex: 0 0 auto;
  font-size: 13px;
  color: var(--tx-3);
}

.custom-num input {
  flex: 1 1 auto;
  min-height: 44px;
  font-size: 15px;
}

.custom-num-unit { flex: 0 0 auto; font-size: 13px; color: var(--tx-3); }

.pick-hint {
  margin: 10px 0 0;
  font-size: 12.5px;
  color: var(--tx-3);
}
.pick-hint b { color: var(--ember-2); font-weight: 600; }

.pick.pick-3 { grid-template-columns: repeat(3, 1fr); }

/* ---------------------------------------------------------- 内容标签页 */

.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 5px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 16px;
}

.tab {
  -webkit-appearance: none;
  appearance: none;
  font: inherit;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--tx-3);
  background: transparent;
  border: 0;
  border-radius: 9px;
  min-height: 46px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  transition: background .18s, color .18s;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.tab:hover { color: var(--tx-2); }

.tab.on {
  background: rgba(255, 122, 61, 0.16);
  color: var(--ember-2);
  box-shadow: inset 0 0 0 1px rgba(255, 122, 61, 0.35);
}

.tab-badge {
  font-style: normal;
  font-size: 11px;
  font-weight: 600;
  line-height: 1;
  padding: 3px 6px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.12);
  color: var(--tx-2);
  font-variant-numeric: tabular-nums;
}
.tab.on .tab-badge { background: rgba(255, 122, 61, 0.28); color: var(--ember-2); }

.tabpane { animation: paneIn .18s ease-out; }

@keyframes paneIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: none; }
}

.mix-hint {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--tx-2);
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 9px 12px;
}

/* ------------------------------------------------------------ 分步向导 */

.steps { margin-bottom: 18px; }

.steps-track {
  height: 4px;
  border-radius: 99px;
  background: rgba(0, 0, 0, 0.42);
  overflow: hidden;
}

.steps-track i {
  display: block;
  height: 100%;
  width: 25%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--ember), var(--ember-2));
  transition: width .26s ease-out;
}

.steps-label { margin: 9px 0 0; font-size: 12.5px; color: var(--tx-3); }

.step { animation: paneIn .2s ease-out; }

.step .card-title { font-size: 16px; margin-bottom: 16px; }

.step-nav {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 10px;
  margin-top: 20px;
}
.step-nav .btn { width: 100%; }

#submitWrap { margin-top: 10px; }

/* -------------------------------------------------------------- 确认摘要 */

.summary {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  overflow: hidden;
}

.summary dl {
  margin: 0;
  display: grid;
  grid-template-columns: auto 1fr;
}

.summary dt,
.summary dd {
  margin: 0;
  padding: 9px 13px;
  font-size: 13px;
  line-height: 1.5;
  border-bottom: 1px solid var(--line);
  word-break: break-word;
}

.summary dt { color: var(--tx-3); white-space: nowrap; }
.summary dd { color: var(--tx); text-align: right; }
.summary dt:last-of-type,
.summary dd:last-of-type { border-bottom: 0; }

/* ------------------------------------------------------------ 内容区块 */

.block-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 9px;
}
.block-label { font-size: 13px; font-weight: 600; color: var(--tx-2); }
.block-head .btn { margin-left: auto; }

/* 文本 / 文件两个区块之间的分隔 */
.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0 14px;
  color: var(--tx-3);
  font-size: 12px;
}
.divider::before,
.divider::after {
  content: '';
  flex: 1 1 auto;
  height: 1px;
  background: var(--line);
}

.clip-tip {
  margin: 10px 0 0;
  padding: 9px 12px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ember-2);
  background: rgba(255, 122, 61, 0.09);
  border: 1px solid rgba(255, 122, 61, 0.26);
  border-radius: var(--r-sm);
}
.clip-tip.bad {
  color: #ff9d8c;
  background: rgba(226, 96, 79, 0.09);
  border-color: rgba(226, 96, 79, 0.3);
}

.file-card { padding: 16px; }

/* 内联主按钮：默认 primary 是整行宽，这里要按内容宽度 */
.btn.primary.inline {
  width: auto;
  padding: 10px 20px;
  font-size: 14px;
}

.btn.copied {
  background: rgba(93, 196, 139, 0.18) !important;
  border-color: rgba(93, 196, 139, 0.5) !important;
  color: #8ddcae !important;
}

.touch-tip {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--tx-3);
}

.preview img { cursor: zoom-in; }

/* ---------------------------------------------------- 手动复制兜底弹层 */

.sheet-mask {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.66);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 60;
  padding: 0;
}

.sheet {
  width: 100%;
  max-width: 620px;
  background: #16181e;
  border: 1px solid var(--line-2);
  border-bottom: 0;
  border-radius: 18px 18px 0 0;
  padding: 20px 18px calc(20px + env(safe-area-inset-bottom, 0px));
  animation: sheetUp .22s ease-out;
}

@keyframes sheetUp {
  from { transform: translateY(22px); opacity: .6; }
  to { transform: translateY(0); opacity: 1; }
}

.sheet-title { margin: 0 0 8px; font-size: 16px; font-weight: 600; }
.sheet-tip { margin: 0 0 12px; font-size: 13px; color: var(--tx-2); }

.sheet-text {
  width: 100%;
  height: 190px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.7;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid var(--line-2);
  border-radius: var(--r-sm);
  color: var(--tx);
  padding: 12px;
  resize: vertical;
  -webkit-user-select: text;
  user-select: text;
}

.sheet-actions { display: flex; justify-content: flex-end; margin-top: 14px; }
.sheet-actions .btn { width: auto; }

/* -------------------------------------------------------- 图片全屏预览 */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 70;
  background: rgba(6, 7, 9, 0.96);
  display: flex;
  flex-direction: column;
  padding: env(safe-area-inset-top, 0px) 0 env(safe-area-inset-bottom, 0px);
}

.lightbox-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  flex: 0 0 auto;
}

.lightbox-name {
  font-size: 13px;
  color: var(--tx-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 45%;
}

.lightbox-bar .btn { width: auto; }

.lightbox-stage {
  flex: 1 1 auto;
  display: grid;
  place-items: center;
  overflow: auto;
  padding: 14px;
  -webkit-overflow-scrolling: touch;
}

.lightbox-stage img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 4px;
  -webkit-user-select: none;
  user-select: none;
}

.lightbox-hint {
  flex: 0 0 auto;
  margin: 0;
  padding: 0 16px 16px;
  font-size: 12px;
  color: var(--tx-3);
  text-align: center;
}
.lightbox-hint:empty { display: none; }

/* --------------------------------------------------------------- 响应式 */

@media (max-width: 640px) {
  .wrap { padding: 24px 15px 60px; }
  .card { padding: 16px; }
  .grid { grid-template-columns: 1fr; }
  .share-count { font-size: 50px; }
  .gone-title { font-size: 23px; }
  .brand h1 { font-size: 17px; }

  /* 手机：按钮排成两列，主操作占满整行 */
  .file-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  .file-actions .btn { width: 100%; }
  .file-actions .btn.primary.inline { grid-column: 1 / -1; }
  .file-actions > a.btn { display: inline-flex; }

  .pick-item { min-height: 54px; font-size: 17px; }
  .sheet-text { height: 220px; font-size: 14px; }
}