:root {
  --bg: #0f1220;
  --bg2: #171b2e;
  --card: #1d2240;
  --line: #2c3358;
  --text: #e8eaf6;
  --text-dim: #9aa3c7;
  --accent: #ff9f43;
  --accent-deep: #f97f2a;
  --accent2: #38d39f;
  --accent2-deep: #1fb98a;
  --danger: #ff6b6b;
  --radius: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  background:
    radial-gradient(1100px 700px at 15% -10%, rgba(64, 84, 168, 0.28), transparent 60%),
    radial-gradient(900px 600px at 95% 105%, rgba(56, 211, 159, 0.08), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  overflow: hidden;
}

::selection { background: rgba(255, 159, 67, 0.35); }

/* 全局滚动条 */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #333c6b, #262d52);
  border-radius: 6px; border: 2px solid transparent; background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover { background: #45508a; background-clip: padding-box; border: 2px solid transparent; }

/* ---------- 顶栏 ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  background: rgba(23, 27, 46, 0.75);
  backdrop-filter: blur(10px);
  position: relative; z-index: 10;
}
.topbar::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,159,67,.45), rgba(56,211,159,.4), transparent);
}
.brand { display: flex; align-items: center; gap: 14px; }
.logo {
  width: 44px; height: 44px; border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 4px 18px rgba(40, 60, 150, 0.4), 0 0 0 1px rgba(255,255,255,0.08);
}
.brand h1 {
  font-size: 18px; letter-spacing: 2px;
  background: linear-gradient(100deg, #fff 20%, #ffd9a8 60%, #ff9f43);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.brand p { font-size: 12px; color: var(--text-dim); margin-top: 3px; letter-spacing: 1px; }
.top-status {
  display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-dim);
  background: var(--bg2); border: 1px solid var(--line);
  padding: 6px 14px; border-radius: 20px;
}
.status-dot { width: 9px; height: 9px; border-radius: 50%; background: #666; transition: background .3s; }
.status-dot.ok { background: var(--accent2); box-shadow: 0 0 8px var(--accent2); animation: breathe 2.4s infinite; }
.status-dot.err { background: var(--danger); box-shadow: 0 0 8px var(--danger); }
@keyframes breathe { 0%,100% { opacity: 1; } 50% { opacity: .45; } }

/* ---------- 布局 ---------- */
.layout {
  display: flex;
  height: calc(100vh - 69px);
  gap: 12px;
  padding: 10px;
}
.panel {
  width: 400px; min-width: 400px;
  overflow-y: auto;
  display: flex; flex-direction: column; gap: 10px;
  padding-right: 6px;
}
.panel::-webkit-scrollbar { width: 8px; }

.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.025), transparent 40%), var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 16px 18px;
  box-shadow: 0 6px 24px rgba(0,0,0,0.25);
  transition: border-color .25s, box-shadow .25s;
}
.card:hover { border-color: #3d4675; box-shadow: 0 8px 28px rgba(0,0,0,0.35); }
.card-title {
  font-size: 15px; margin-bottom: 14px;
  display: flex; align-items: center; gap: 10px;
  letter-spacing: 1px;
}
.card-title::after { content: ""; flex: 1; height: 1px; background: linear-gradient(90deg, var(--line), transparent); }
.step-num {
  width: 24px; height: 24px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 800; color: #2a1a05;
  background: linear-gradient(135deg, #ffc46b, var(--accent-deep));
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(255,159,67,.35);
}
.sub-title { font-size: 12px; color: var(--text-dim); margin: 12px 0 8px; letter-spacing: 1px; }

/* ---------- 广告轮播 ---------- */
.card-ads { padding: 8px; }
.ads-slider {
  position: relative;
  aspect-ratio: 1200 / 420;
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg2);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.05);
}
.ads-track, .ads-slide {
  position: absolute; inset: 0;
}
.ads-slide {
  opacity: 0;
  transform: scale(1.04);
  pointer-events: none;          /* 非当前图不拦截任何鼠标事件（点击/右键另存为） */
  visibility: hidden;            /* 彻底移出命中测试，避免透明层挡住下面的图 */
  transition: opacity .9s ease, transform 5s ease, visibility 0s .9s;
}
.ads-slide.active {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;          /* 只有当前可见的图可以点击下载 */
  visibility: visible;           /* 切到时立即显示（淡出延迟隐藏由上一行处理） */
  transition: opacity .9s ease, transform 5s ease, visibility 0s;
  animation: kenburns 6s ease forwards;
}
@keyframes kenburns { from { transform: scale(1.02); } to { transform: scale(1.1); } }
.ads-slide img {
  width: 100%; height: 100%;
  object-fit: cover; display: block;
}
.ads-link {
  display: block; width: 100%; height: 100%;
  cursor: pointer; -webkit-tap-highlight-color: transparent;
}
.ads-dl-badge {
  position: absolute; right: 10px; bottom: 10px;
  background: rgba(0,0,0,.55); color: #fff;
  font-size: 12px; padding: 4px 12px; border-radius: 14px;
  letter-spacing: 1px; pointer-events: none;
  backdrop-filter: blur(4px);
  opacity: .85; transition: opacity .3s;
}
.ads-slide.active .ads-dl-badge { opacity: 1; }
.ads-dots {
  position: absolute; left: 0; right: 0; bottom: 8px;
  display: flex; justify-content: center; gap: 7px;
  z-index: 5;
}
.ads-dot {
  width: 8px; height: 8px; border-radius: 5px;
  background: rgba(255,255,255,0.38);
  cursor: pointer;
  transition: width .25s, background .25s;
}
.ads-dot.active {
  width: 22px;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(255,159,67,.7);
}

/* ---------- 背景 ---------- */
.bg-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
}
.bg-thumb {
  aspect-ratio: 9 / 16;
  border-radius: 9px;
  background-size: cover; background-position: center;
  border: 2px solid rgba(255,255,255,0.06);
  cursor: pointer;
  position: relative;
  transition: transform .18s, border-color .18s, box-shadow .18s;
}
.bg-thumb:hover { transform: scale(1.06); border-color: rgba(255,255,255,0.25); }
/* 亮色纯色块（白/黄）加可见描边 */
.bg-thumb.solid.light { border-color: rgba(0,0,0,0.28); }
.bg-thumb.solid.light:hover { border-color: rgba(0,0,0,0.5); }
.bg-thumb.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255,159,67,.22), 0 4px 14px rgba(255,159,67,.25);
}
.bg-thumb .bg-name {
  position: absolute; left: 4px; bottom: 4px;
  font-size: 10px; color: #fff;
  text-shadow: 0 1px 4px #000;
  background: rgba(0,0,0,0.5); padding: 1px 6px; border-radius: 6px;
  backdrop-filter: blur(2px);
}
.upload-btn {
  display: block; text-align: center;
  margin-top: 10px; padding: 9px;
  border: 1px dashed #3d4675; border-radius: 10px;
  color: var(--text-dim); font-size: 13px; cursor: pointer;
  transition: border-color .18s, color .18s, background .18s;
}
.upload-btn:hover { border-color: var(--accent); color: var(--text); background: rgba(255,159,67,.05); }

/* 背景占位（仅手机端显示，填满 4×2 网格） */
.bg-thumb-placeholder {
  display: none; /* PC 端隐藏 */
}

.color-row { display: flex; gap: 8px; flex-wrap: wrap; }
.color-chip {
  width: 34px; height: 34px; border-radius: 9px;
  border: 2px solid rgba(255,255,255,0.12); cursor: pointer;
  transition: transform .15s, border-color .15s, box-shadow .15s;
}
.color-chip:hover { transform: scale(1.1); }
.color-chip.active { border-color: var(--accent); transform: scale(1.12); box-shadow: 0 0 0 3px rgba(255,159,67,.22); }
.color-picker {
  width: 34px; height: 34px; border-radius: 9px; cursor: pointer;
  background: conic-gradient(red, yellow, lime, cyan, blue, magenta, red);
  border: 2px solid rgba(255,255,255,0.12);
  transition: transform .15s, border-color .15s;
}
.color-picker.active { border-color: var(--accent); transform: scale(1.12); }

/* 字体颜色 */
.font-color-row { display: flex; gap: 5px; align-items: center; flex: 1; flex-wrap: wrap; }
.font-color-chip {
  width: 21px; height: 21px; border-radius: 6px;
  border: 2px solid rgba(255,255,255,0.16); cursor: pointer;
  transition: transform .15s, border-color .15s, box-shadow .15s;
}
.font-color-chip:hover { transform: scale(1.12); }
.font-color-chip.active { border-color: var(--accent); transform: scale(1.16); box-shadow: 0 0 0 3px rgba(255,159,67,.22); }
.font-color-picker {
  width: 21px; height: 21px; border-radius: 6px; cursor: pointer;
  background: conic-gradient(red, yellow, lime, cyan, blue, magenta, red);
  border: 2px solid rgba(255,255,255,0.16); padding: 0;
  transition: transform .15s, border-color .15s;
}
.font-color-picker.active { border-color: var(--accent); transform: scale(1.16); }
/* 窄屏（手机）进一步缩小色块，保证 8 色 + 自定义全部可见 */
@media (max-width: 480px) {
  .font-color-row { gap: 4px; }
  .font-color-chip, .font-color-picker { width: 18px; height: 18px; border-radius: 5px; }
}

/* ---------- 滑条（自定义样式） ---------- */
.slider-row {
  display: flex; align-items: center; gap: 10px;
  margin-top: 14px;
}
.slider-row label { font-size: 13px; color: var(--text-dim); width: 62px; flex-shrink: 0; }
.slider-row input[type=range] {
  -webkit-appearance: none; appearance: none;
  flex: 1; height: 6px; border-radius: 4px; outline: none; cursor: pointer;
  background: linear-gradient(90deg, #2b3260, #454f8f);
  transition: background .2s;
}
.slider-row input[type=range]:hover { background: linear-gradient(90deg, #38407a, #57639f); }
.slider-row input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 17px; height: 17px; border-radius: 50%;
  background: linear-gradient(135deg, #ffc46b, var(--accent-deep));
  border: 2px solid #fff3;
  box-shadow: 0 2px 8px rgba(255,159,67,.5);
  transition: transform .15s;
}
.slider-row input[type=range]::-webkit-slider-thumb:hover { transform: scale(1.25); }
.slider-row input[type=range]::-moz-range-thumb {
  width: 15px; height: 15px; border-radius: 50%;
  background: linear-gradient(135deg, #ffc46b, var(--accent-deep));
  border: 2px solid rgba(255,255,255,.2);
  box-shadow: 0 2px 8px rgba(255,159,67,.5);
}
.slider-val {
  font-size: 12px; color: var(--text);
  background: var(--bg2); padding: 3px 9px; border-radius: 7px;
  min-width: 44px; text-align: center;
  font-variant-numeric: tabular-nums;
  border: 1px solid var(--line);
}

/* ---------- 文案 ---------- */
textarea {
  width: 100%; resize: vertical;
  background: var(--bg2); color: var(--text);
  border: 1px solid var(--line); border-radius: 10px;
  padding: 12px; font-size: 14px; line-height: 1.7;
  outline: none; font-family: inherit;
  transition: border-color .18s, box-shadow .18s;
}
textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,159,67,.14); }
.btn-row { display: flex; gap: 8px; margin-top: 10px; }
.hint { font-size: 12px; color: var(--text-dim); margin-top: 8px; }

/* ---------- 音色 ---------- */
.voice-row { display: flex; gap: 8px; align-items: stretch; }
.voice-row .select-wrap { flex: 1; }
.voice-row .btn { flex-shrink: 0; }

/* 自定义音频（不朗读模式） */
.voice-mode { margin-bottom: 12px; }
.custom-audio-row { display: flex; gap: 8px; margin-top: 10px; align-items: center; }
.custom-audio-row .btn { flex-shrink: 0; }
.custom-audio-row input[type=text] {
  flex: 1; min-width: 0;
  padding: 9px 12px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
}
.custom-audio-row input[type=text]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255,159,67,.14);
}
.hidden-file { display: none; }

/* 时间轴切割（自定义音频） */
.cut-area { margin-top: 12px; padding-top: 12px; border-top: 1px dashed rgba(255,255,255,.12); }
.cut-track {
  position: relative; height: 52px; border-radius: 10px;
  background: var(--bg2); border: 1px solid var(--line);
  cursor: pointer; touch-action: none;
  user-select: none;
  padding: 0 11px;
}
.cut-bars {
  position: absolute; inset: 0; display: flex; align-items: flex-end; gap: 1px;
  padding: 6px 11px; pointer-events: none;
}
.cut-bar {
  flex: 1; min-width: 1px; border-radius: 1px;
  background: rgba(255,255,255,.16);
}
#cutSegs { position: absolute; inset: 0; pointer-events: none; z-index: 1; }
.cut-seg {
  position: absolute; top: 0; bottom: 0; border-radius: 4px;
  opacity: .32; box-shadow: inset 0 0 0 1px rgba(255,255,255,.18);
}
.cut-point {
  position: absolute; top: -4px; bottom: -4px; width: 20px; margin-left: -10px;
  cursor: ew-resize; touch-action: none; z-index: 3; pointer-events: auto;
}
.cut-point::before {
  content: ''; position: absolute; top: 0; bottom: 0; left: 50%;
  width: 2px; background: rgba(255,255,255,.85); transform: translateX(-50%);
}
.cut-point::after {
  content: ''; position: absolute; top: 50%; left: 50%;
  width: 15px; height: 15px; border-radius: 50%;
  background: #fff; border: 3px solid var(--accent-deep);
  transform: translate(-50%, -50%);
  box-shadow: 0 2px 6px rgba(0,0,0,.4);
}
.cut-point:hover::after { transform: translate(-50%, -50%) scale(1.15); }
.cut-insert {
  position: absolute; top: 0; bottom: 0; width: 2px; margin-left: -1px;
  background: #fff; box-shadow: 0 0 6px rgba(255,255,255,.8);
  z-index: 3; display: none; pointer-events: none;
}
.cut-insert.show { display: block; }
.cut-playhead {
  position: absolute; top: -7px; bottom: -7px; width: 2px; margin-left: -1px;
  background: #ff4757; box-shadow: 0 0 6px rgba(255,71,87,.9);
  z-index: 4; display: none; pointer-events: none;
}
.cut-playhead.show { display: block; }
.cut-playhead::before {
  content: '▼'; position: absolute; top: -11px; left: 50%;
  transform: translateX(-50%);
  font-size: 11px; line-height: 1; color: #ff4757;
}
.cut-times { display: flex; align-items: center; gap: 6px; margin-top: 10px; flex-wrap: wrap; }
.cut-sep { color: var(--text-dim); font-size: 13px; }
.cut-unit { color: var(--text-dim); font-size: 12px; }
.cut-dur {
  margin-left: auto; font-size: 13px; font-weight: 700;
  color: var(--accent); white-space: nowrap;
}
.cut-list { margin-top: 8px; display: flex; flex-direction: column; gap: 6px; }
.cut-item {
  display: flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);
  border-radius: 8px; padding: 6px 10px; font-size: 12px;
}
.cut-idx {
  width: 20px; height: 20px; border-radius: 50%; flex: none;
  background: var(--accent); color: #2a1a05; font-weight: 800;
  display: flex; align-items: center; justify-content: center; font-size: 11px;
}
.cut-range { flex: 1; font-variant-numeric: tabular-nums; }
.cut-len { color: var(--accent); font-weight: 700; font-variant-numeric: tabular-nums; }
/* 正在播放的片段行：高亮 */
.cut-item.playing {
  background: rgba(255,159,67,.14);
  border-color: rgba(255,159,67,.55);
  box-shadow: 0 0 0 1px rgba(255,159,67,.25);
}
.cut-item.playing .cut-idx {
  background: #fff; color: #2a1a05;
}
#cutPlayAllBtn.playing {
  background: rgba(255,159,67,.22);
  border-color: var(--accent);
  color: var(--accent);
}
/* 撤销按钮：有可撤销步骤时点亮 */
#cutUndoBtn:not(:disabled) {
  color: #7ee787;
  border-color: rgba(126,231,135,.55);
}
.cut-even {
  display: flex; align-items: center; gap: 4px;
  font-size: 12px; color: var(--text-dim);
}
.cut-even select {
  background: var(--bg2); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px;
  padding: 5px 6px; font-size: 12px; outline: none; cursor: pointer;
}
.btn.mini { padding: 6px 12px; font-size: 12px; border-radius: 8px; }
.btn.mini:disabled { opacity: .45; cursor: not-allowed; }
#cutHint { display: block; margin-top: 8px; }
.select-wrap select {
  width: 100%; padding: 10px 12px;
  background: var(--bg2); color: var(--text);
  border: 1px solid var(--line); border-radius: 10px;
  font-size: 14px; outline: none; cursor: pointer;
  transition: border-color .18s, box-shadow .18s;
}
.select-wrap select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,159,67,.14); }

/* ---------- 参数 ---------- */
.param-row { display: flex; align-items: center; justify-content: space-between; margin-top: 10px; }
.param-label { font-size: 13px; color: var(--text-dim); }
.seg-control {
  display: flex; background: var(--bg2); border-radius: 10px; padding: 3px;
  border: 1px solid var(--line);
}
.seg-btn {
  border: none; background: transparent; color: var(--text-dim);
  padding: 6px 16px; border-radius: 8px; cursor: pointer; font-size: 13px;
  transition: background .18s, color .18s;
}
.seg-btn:hover { color: var(--text); }
.seg-btn.active {
  background: linear-gradient(135deg, #ffc46b, var(--accent-deep));
  color: #2a1a05; font-weight: 700;
  box-shadow: 0 2px 8px rgba(255,159,67,.3);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  border: none; cursor: pointer;
  font-size: 14px; font-weight: 600;
  padding: 11px 18px; border-radius: 11px;
  transition: transform .12s, opacity .12s, box-shadow .18s, filter .18s;
  font-family: inherit; letter-spacing: .5px;
}
.btn:hover { transform: translateY(-1px); filter: brightness(1.06); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; filter: none; }
.btn.wide { width: 100%; }
.btn.primary {
  background: linear-gradient(135deg, #ffb763, var(--accent-deep));
  color: #2a1a05;
  box-shadow: 0 4px 18px rgba(255,159,67,.32);
}
.btn.accent {
  background: linear-gradient(135deg, #5ae3b3, var(--accent2-deep));
  color: #06301f;
  box-shadow: 0 4px 18px rgba(56,211,159,.32);
}
.btn.accent.wide:not(:disabled) { animation: glowGreen 2.6s infinite; }
@keyframes glowGreen {
  0%, 100% { box-shadow: 0 4px 18px rgba(56,211,159,.32); }
  50% { box-shadow: 0 4px 26px rgba(56,211,159,.55); }
}
.btn.ghost {
  background: var(--bg2); color: var(--text);
  border: 1px solid var(--line);
}
.btn.ghost:hover { border-color: #454f8f; }
.btn.success {
  background: linear-gradient(135deg, #5ae3b3, var(--accent2-deep));
  color: #06301f; text-align: center; text-decoration: none; margin-top: 10px;
  box-shadow: 0 4px 18px rgba(56,211,159,.32);
}

/* ---------- 操作区：三按钮并排（完全等大） ---------- */
.action-row { display: flex; gap: 10px; }
.action-row .btn,
.action-row .dl-btn {
  flex: 1 1 0;
  display: inline-flex; flex-direction: row;
  align-items: center; justify-content: center;
  gap: 5px;
  height: 44px;
  padding: 0 8px !important;
  font-size: 14px !important;
  line-height: 1 !important;
  border-radius: 11px !important;
  box-sizing: border-box;
  white-space: nowrap;
}
/* 图标：内嵌 SVG，固定 16×16 画布精确绘制，像素级对齐 */
.action-row .bi {
  width: 16px; height: 16px;
  flex: 0 0 16px;
  display: inline-flex;
}
.action-row .bi svg { width: 100%; height: 100%; display: block; }
.action-row .bt { line-height: 1; }
.action-row .dl-btn {
  text-decoration: none;
  transition: opacity .2s, filter .2s, box-shadow .3s;
}
.action-row .dl-btn.disabled {
  opacity: 0.4;
  pointer-events: none;
  filter: grayscale(0.5);
  box-shadow: none;
}
.action-row .dl-btn:not(.disabled) { animation: glowGreen 2.6s infinite; }

/* ---------- 进度 ---------- */
.progress { margin-top: 12px; }
.progress-bar { height: 8px; background: var(--bg2); border-radius: 6px; overflow: hidden; border: 1px solid var(--line); }
.progress-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 6px; transition: width .2s;
  background-size: 200% 100%;
  animation: flow 2s linear infinite;
}
@keyframes flow { 0% { background-position: 0% 0; } 100% { background-position: -200% 0; } }
.progress-text { display: block; text-align: center; font-size: 12px; color: var(--text-dim); margin-top: 6px; }

.msg { margin-top: 10px; font-size: 13px; line-height: 1.7; white-space: pre-line; word-break: break-all; }
.msg.warn { color: #ffd08a; }
.msg.error { color: var(--danger); }
.msg.ok { color: var(--accent2); }

/* 复制下载链接兜底按钮 */
.copy-link {
  display: block;
  width: 100%;
  margin-top: 8px;
  padding: 11px 0;
  border: 1.5px dashed var(--accent2);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.25);
  font-size: 14px;
  font-weight: 600;
  color: var(--accent2);
  font-size: 13px;
  cursor: pointer;
}
.copy-link:active { opacity: 0.7; }

/* ---------- 预览 ---------- */
.preview-wrap {
  flex: 1;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  min-width: 0;
  /* 墙面质感 */
  background:
    radial-gradient(560px 420px at 50% 12%, rgba(255, 240, 210, 0.07), transparent 70%),
    radial-gradient(900px 700px at 50% 110%, rgba(0, 0, 0, 0.35), transparent 75%),
    linear-gradient(180deg, #1b2040, #101326 85%);
  border-radius: 16px;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.05);
}
.preview-stage {
  height: 100%;
  max-height: calc(100vh - 180px);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
  background: #000;
  /* 画框装裱：金线 → 卡纸 → 木框，从内到外 */
  border: none;
  box-shadow:
    inset 0 0 0 2px rgba(255, 226, 150, 0.55),   /* 画面内金线 */
    0 0 0 2px #6d4a1e,                           /* 框内沿深线 */
    0 0 0 9px #f0e6d0,                           /* 米白卡纸 */
    0 0 0 10px rgba(110, 74, 28, 0.5),           /* 卡纸压线 */
    0 0 0 20px #b98a4e,                          /* 木质框 */
    0 0 0 22px #7c5220,                          /* 木框外沿 */
    0 0 0 23px rgba(255, 226, 150, 0.25),        /* 框外亮边 */
    0 22px 55px rgba(0, 0, 0, 0.55),
    0 8px 18px rgba(0, 0, 0, 0.4);
  transition: box-shadow .3s;
}
.preview-stage.aspect-9-16 { aspect-ratio: 9 / 16; }
.preview-stage.aspect-16-9 { aspect-ratio: 16 / 9; max-width: 100%; }
.preview-stage canvas {
  width: 100%; height: 100%;
  display: block;
}
.stage-cover {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 14px;
  background: rgba(8, 10, 22, 0.55);
  backdrop-filter: blur(2px);
  cursor: pointer;
  transition: opacity .3s;
}
.cover-icon {
  width: 88px; height: 88px; border-radius: 50%;
  background: linear-gradient(135deg, #ffb763, var(--accent-deep)); color: #2a1a05;
  font-size: 34px; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 40px rgba(255,159,67,.5);
  animation: pulse 1.8s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 8px 40px rgba(255,159,67,.5), 0 0 0 0 rgba(255,159,67,.4); }
  50% { box-shadow: 0 8px 40px rgba(255,159,67,.5), 0 0 0 22px rgba(255,159,67,0); }
}
.cover-text { font-size: 15px; color: #fff; text-shadow: 0 2px 10px #000; letter-spacing: 1px; }

.preview-info {
  margin-top: 36px;
  display: flex; justify-content: space-between; align-items: center;
  width: min(440px, 80%);
  color: var(--text-dim); font-size: 13px;
  background: rgba(23, 27, 46, 0.6);
  border: 1px solid var(--line);
  border-radius: 20px; padding: 6px 16px;
  backdrop-filter: blur(6px);
}
#playTime { font-variant-numeric: tabular-nums; }

.hidden { display: none !important; }

/* ---------- 会员状态条 ---------- */
.membership-bar {
  display: flex; align-items: center; justify-content: space-between;
  background: linear-gradient(135deg, rgba(255,159,67,.12), rgba(255,159,67,.03));
  border: 1px solid rgba(255,159,67,.35);
  border-radius: 11px; padding: 9px 14px; margin-bottom: 12px;
  font-size: 13px; color: #ffc98f;
}
.membership-bar .btn.sm { padding: 5px 12px; font-size: 12px; }
.membership-bar.is-member {
  background: linear-gradient(135deg, rgba(56,211,159,.12), rgba(56,211,159,.03));
  border-color: rgba(56,211,159,.4); color: var(--accent2);
}

/* ---------- 弹窗 ---------- */
.modal-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(5, 7, 16, 0.7); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  animation: fadeIn .2s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), transparent 15%), var(--card);
  border: 1px solid #3a4370;
  border-radius: 20px; padding: 28px; width: 440px; max-width: 92vw;
  max-height: 90vh; overflow-y: auto; position: relative;
  box-shadow: 0 20px 80px rgba(0,0,0,0.6);
  animation: popIn .25s cubic-bezier(.2,.9,.3,1.2);
}
@keyframes popIn { from { opacity: 0; transform: scale(0.92) translateY(12px); } to { opacity: 1; transform: scale(1) translateY(0); } }
.modal-lg { width: 560px; }

/* ============ 视频生成成功·下载引导弹窗 ============ */
.dl-modal { width: 420px; text-align: center; padding-top: 36px; }
.dl-icon { font-size: 46px; line-height: 1; margin-bottom: 8px; }
.dl-modal .modal-title { margin-bottom: 6px; }
.dl-tip { font-size: 14px; color: var(--muted); margin-bottom: 18px; white-space: pre-line; }
.dl-go {
  margin-top: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 18px;
  min-height: 128px;
}
.dl-logo {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 6px 22px rgba(0,0,0,.25);
  border: 2px solid rgba(255,255,255,.45);
  background: #fff;
}
.dl-go .bt { font-size: 16px; letter-spacing: 1px; }
.dl-copy { margin-top: 10px; }
.dl-hint {
  margin-top: 14px; padding: 10px 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px dashed #3a4370; border-radius: 10px;
  font-size: 12.5px; line-height: 1.7; color: var(--muted);
  text-align: left; white-space: pre-line;
}
.dl-later {
  margin-top: 14px; padding: 6px 18px;
  background: none; border: none;
  color: var(--muted); font-size: 13px;
  cursor: pointer;
}
.dl-later:active { opacity: 0.6; }
.modal-close {
  position: absolute; top: 14px; right: 14px;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--bg2); border: 1px solid var(--line);
  color: var(--text-dim);
  font-size: 15px; cursor: pointer; line-height: 1;
  transition: color .15s, border-color .15s, transform .15s;
}
.modal-close:hover { color: var(--text); border-color: #454f8f; transform: rotate(90deg); }
.modal-title { font-size: 20px; margin-bottom: 22px; text-align: center; letter-spacing: 2px; }

/* 付费套餐 */
.pay-plans { display: flex; gap: 12px; flex-wrap: wrap; }
.pay-plan {
  flex: 1; text-align: center;
  min-width: 96px;
  border: 2px solid var(--line); border-radius: 15px;
  padding: 20px 10px; position: relative;
  background: var(--bg2);
  transition: transform .2s, border-color .2s, box-shadow .2s;
}
.pay-plan:hover { transform: translateY(-3px); box-shadow: 0 10px 28px rgba(0,0,0,.35); }
.pay-plan.recommend { border-color: var(--accent2); box-shadow: 0 0 24px rgba(56,211,159,.14); }
.plan-badge {
  position: absolute; top: -11px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, #5ae3b3, var(--accent2-deep)); color: #06301f;
  font-size: 11px; font-weight: 700; padding: 2px 14px; border-radius: 20px;
  box-shadow: 0 3px 10px rgba(56,211,159,.35);
}
.plan-name { font-size: 14px; color: var(--text-dim); margin-bottom: 10px; letter-spacing: 1px; }
.plan-price { font-size: 21px; font-weight: 800; color: var(--accent); margin-bottom: 12px; font-variant-numeric: tabular-nums; white-space: nowrap; }
.plan-desc { font-size: 12px; color: var(--text-dim); line-height: 1.7; margin-bottom: 16px; }
.pay-hint { text-align: center; font-size: 12px; color: var(--text-dim); margin-top: 16px; }

/* 扫码支付区域 */
.qr-pay { margin-top: 18px; text-align: center; animation: popIn .3s ease; }
.qr-title { font-size: 15px; font-weight: 600; margin-bottom: 12px; }
.qr-title span { color: #07c160; margin-left: 6px; }
.qr-box {
  display: inline-block; padding: 12px; background: #fff; border-radius: 14px;
  box-shadow: 0 4px 20px rgba(0,0,0,.25), 0 0 0 1px rgba(56,211,159,.2);
}
.qr-box img, .qr-box canvas { display: block; }
.qr-status { margin-top: 12px; font-size: 13px; color: var(--text-dim); }
.qr-status.ok { color: #07c160; font-weight: 600; }

/* 兑换区域 */
.redeem-area { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 12px; }
.redeem-area summary { font-size: 13px; color: var(--text-dim); cursor: pointer; user-select: none; }
.redeem-area summary:hover { color: var(--accent); }
.redeem-row { display: flex; gap: 8px; margin-top: 10px; }
.redeem-input {
  flex: 1; padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px;
  font-size: 13px; background: var(--bg2); color: var(--text);
}
.redeem-input:focus { outline: none; border-color: var(--accent); }
.redeem-hint { margin-top: 8px; font-size: 13px; }
.redeem-hint.ok { color: #07c160; }
.redeem-hint.err { color: #e74c3c; }

/* 兑换码管理（管理后台） */
.code-admin-btns { display: flex; gap: 8px; margin-bottom: 8px; flex-wrap: wrap; }
#codeList {
  width: 100%; padding: 8px 12px; box-sizing: border-box;
  background: var(--bg2); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px;
  font-size: 12px; font-family: Consolas, Monaco, monospace;
  line-height: 1.8; resize: vertical; outline: none;
}

/* 管理后台 */
.admin-entry {
  position: fixed; bottom: 14px; right: 18px; z-index: 50;
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--bg2); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-dim); font-size: 16px; cursor: pointer;
  opacity: 0.4; transition: opacity .2s, transform .2s;
  backdrop-filter: blur(6px);
}
.admin-entry:hover { opacity: 1; transform: rotate(45deg); }
.admin-login { display: flex; gap: 10px; margin-bottom: 16px; }
.pw-field { position: relative; flex: 1; display: flex; }
.pw-field .admin-input { width: 100%; padding-right: 44px; }
.pw-eye {
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  width: 32px; height: 32px; padding: 0;
  background: transparent; border: none; border-radius: 8px;
  font-size: 16px; line-height: 1; cursor: pointer;
  color: var(--text-dim); opacity: .75;
}
.pw-eye:hover { opacity: 1; background: rgba(128,128,128,.12); }
.pw-eye.active { color: var(--accent); opacity: 1; }
.admin-input {
  flex: 1; padding: 10px 14px;
  background: var(--bg2); color: var(--text);
  border: 1px solid var(--line); border-radius: 10px; outline: none;
  transition: border-color .18s, box-shadow .18s;
}
.admin-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,159,67,.14); }
.admin-panel h3 {
  font-size: 13px; margin: 20px 0 10px; color: var(--text-dim);
  letter-spacing: 1px; display: flex; align-items: center; gap: 8px;
}
.admin-panel h3::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.admin-row {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 10px; gap: 12px;
}
.admin-row label { font-size: 13px; color: var(--text-dim); flex-shrink: 0; width: 120px; }
.admin-row input[type=text], .admin-row input[type=password], .admin-row input[type=number] {
  flex: 1; padding: 8px 12px;
  background: var(--bg2); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px; outline: none; font-size: 13px;
  transition: border-color .18s, box-shadow .18s;
}
.admin-row input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,159,67,.14); }
.admin-row input[type=checkbox] { accent-color: var(--accent); width: 17px; height: 17px; cursor: pointer; }
.admin-row textarea {
  flex: 1; padding: 8px 12px;
  background: var(--bg2); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px; outline: none;
  font-size: 12px; line-height: 1.6; font-family: Consolas, monospace;
  resize: vertical;
  transition: border-color .18s, box-shadow .18s;
}
.admin-row textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,159,67,.14); }
.admin-row label small { color: #6b7399; font-weight: 400; }
.admin-stats {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px;
  margin-bottom: 10px;
}
.admin-stats .stat-item {
  background: var(--bg2); border-radius: 10px; padding: 12px 14px;
  border: 1px solid var(--line);
}
.admin-stats .stat-label { font-size: 11px; color: var(--text-dim); }
.admin-stats .stat-val { font-size: 19px; font-weight: 700; color: var(--accent); margin-top: 5px; font-variant-numeric: tabular-nums; }

/* ---------- 窄屏适配 ---------- */
@media (max-width: 1080px) {
  .layout { padding: 12px; gap: 12px; }
  .panel { width: 340px; min-width: 340px; }
}

/* ---------- 手机版（自动识别） ---------- */
@media (max-width: 768px) {
  body { overflow: auto; }
  .topbar { padding: 10px 14px; flex-wrap: wrap; gap: 8px; }
  .brand h1 { font-size: 16px; }
  .brand p { font-size: 11px; }

  .layout {
    flex-direction: column;
    height: auto;
    padding: 10px;
    gap: 12px;
  }
  /* 让面板内的卡片提升为 layout 的直接子项，便于排序 */
  .panel {
    display: contents;
    width: auto; min-width: 0;
    overflow: visible;
    padding-right: 0;
  }

  /* 手机版顺序：广告轮播 → 背景 → 文案 → 音色 → 视频参数 → 预览舞台 → 视频生成操作区 */
  .card-ads   { order: 1; }
  .card-bg    { order: 2; }
  .card-text  { order: 3; }
  .card-voice { order: 4; }
  .card-param { order: 5; }
  .preview-wrap { order: 6; }
  .card-gen   { order: 7; }

  .preview-wrap { justify-content: flex-start; }
  .preview-stage {
    height: auto;
    max-height: none;
    width: 100%;
    max-width: min(300px, calc(100% - 56px));
    margin: 26px auto;
  }
  .preview-info { width: 100%; max-width: 340px; margin: 10px auto 0; }

  .bg-grid { grid-template-columns: repeat(3, 1fr); }
  .modal { width: 94vw; padding: 20px; }
  .modal-lg { width: 94vw; }
  .pay-plans { flex-direction: column; }
}