:root{
  --bg:oklch(0.985 0.004 80);
  --surface:oklch(1 0 0);
  --surface-2:oklch(0.978 0.008 80);
  --surface-3:oklch(0.958 0.012 75);
  --border:oklch(0.915 0.010 75);
  --border-strong:oklch(0.86 0.014 75);
  --text:oklch(0.26 0.018 60);
  --text-2:oklch(0.45 0.014 65);
  --muted:oklch(0.62 0.012 70);
  --accent:oklch(0.60 0.145 48);
  --accent-hover:oklch(0.54 0.155 46);
  --accent-soft:oklch(0.955 0.035 60);
  --accent-border:oklch(0.86 0.075 58);
  --green:oklch(0.62 0.13 155);
  --red:oklch(0.58 0.18 25);
  --shadow:0 1px 2px oklch(0.5 0.02 60 / .05),0 8px 28px oklch(0.5 0.02 60 / .05);
  --radius:12px;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
[hidden]{display:none !important}
html,body{height:100%;margin:0}
body{background:var(--bg);color:var(--text);font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
.hidden{display:none !important}

.app{height:100vh;display:flex;flex-direction:column}
.topbar{height:68px;flex:none;display:flex;align-items:center;justify-content:space-between;padding:0 24px;background:var(--surface);border-bottom:1px solid var(--border)}
.brand{display:flex;align-items:center;gap:13px}
.brand-mark{width:34px;height:34px;border-radius:9px;background:var(--accent-soft);border:1px solid var(--accent-border);display:flex;align-items:flex-end;justify-content:center;gap:3px;padding:7px}
.brand-mark span{display:block;width:5px;border-radius:2px;background:var(--accent)}
.brand-mark span:nth-child(1){height:10px;opacity:.55}
.brand-mark span:nth-child(2){height:18px}
.brand-mark span:nth-child(3){height:13px;opacity:.75}
.brand h1{margin:0;font-size:16px;font-weight:650;letter-spacing:.01em}
.brand p{margin:1px 0 0;font-size:12px;color:var(--muted)}
.top-actions{display:flex;align-items:center;gap:9px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--muted);margin-right:6px}
.dot-ok{background:var(--green)}
.dot-err{background:var(--red)}
.dot-busy{background:var(--accent);animation:pulse 1.2s infinite}
@keyframes pulse{50%{opacity:.35}}

.btn{border:1px solid var(--border-strong);background:var(--surface);color:var(--text);border-radius:9px;padding:8px 15px;font-size:13px;font-weight:520;transition:.15s;white-space:nowrap}
.btn:hover:not(:disabled){border-color:var(--accent-border);background:var(--accent-soft)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn-primary{background:var(--accent);border-color:var(--accent);color:white;box-shadow:0 1px 2px oklch(0.4 0.1 45 / .18)}
.btn-primary:hover:not(:disabled){background:var(--accent-hover);border-color:var(--accent-hover)}
.btn-ghost{background:transparent}
.btn-block{width:100%;padding:10px 16px}
.btn-sm{padding:6px 11px;font-size:12px;border-radius:8px}

.layout{flex:1;min-height:0;display:grid;grid-template-columns:392px minmax(0,1fr);gap:16px;padding:16px 18px 18px}
.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);min-height:0;display:flex;flex-direction:column;overflow:hidden}
.panel-scroll{overflow-y:auto;padding:20px 20px 28px}
.section-title{display:flex;align-items:center;gap:9px;font-size:12px;font-weight:650;letter-spacing:.06em;color:var(--text-2);text-transform:uppercase;margin:22px 0 14px}
.section-title:first-child{margin-top:0}
.section-title .num{font-size:11px;color:var(--accent);background:var(--accent-soft);border:1px solid var(--accent-border);border-radius:6px;padding:1px 6px;letter-spacing:0}
.field{display:block;margin-bottom:14px}
.field .label{display:block;font-size:12.5px;font-weight:560;color:var(--text-2);margin-bottom:6px}
.field .label em{color:var(--accent);font-style:normal}
.field input,.field textarea,.field select,.mini-select select{width:100%;border:1px solid var(--border-strong);background:var(--surface);border-radius:9px;padding:9px 11px;font-size:13px;outline:none;transition:.15s;resize:vertical}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--accent);box-shadow:0 0 0 3px oklch(0.60 0.145 48 / .10)}
.field input::placeholder,.field textarea::placeholder{color:oklch(0.72 0.01 70)}
.field-row{display:flex;gap:10px}
.field-row .grow{flex:1;min-width:0}
.hint{font-size:11.5px;color:var(--muted);line-height:1.55;margin:7px 0 14px}
.hint b{color:var(--accent);font-weight:650}

.style-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.style-card{border:1px solid var(--border-strong);border-radius:10px;overflow:hidden;cursor:pointer;transition:.15s;background:var(--surface);display:flex;flex-direction:column;min-width:0}
.style-card:hover{border-color:var(--accent-border);background:var(--surface-2)}
.style-card.active{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 2px oklch(0.60 0.145 48 / .12)}
.style-thumb{position:relative;width:100%;aspect-ratio:3/4;overflow:hidden;background:var(--surface-3);display:block}
.style-thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s}
.style-card:hover .style-thumb img{transform:scale(1.04)}
.style-card.active .style-thumb:after{content:"";position:absolute;inset:0;border:2px solid var(--accent);border-radius:0;pointer-events:none}
.style-zoom{position:absolute;right:4px;top:4px;z-index:2;width:20px;height:20px;border-radius:6px;border:0;background:oklch(0.25 0.02 60 / .5);color:#fff;font-size:11px;line-height:20px;text-align:center;padding:0;backdrop-filter:blur(2px);transition:.15s}
.style-zoom:hover{background:var(--accent);transform:scale(1.08)}
.style-info{padding:7px 6px 8px;min-width:0;flex:1}
.style-name{font-size:11.5px;font-weight:600;line-height:1.35;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.style-card.active .style-name{color:var(--accent)}
.style-sub{font-size:10.5px;color:var(--muted);line-height:1.3;margin-top:3px;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.style-hint{margin:8px 0 14px}

.lightbox{position:fixed;inset:0;z-index:70;background:oklch(0.2 0.01 60 / .74);display:flex;align-items:center;justify-content:center;padding:22px;animation:fadein .16s ease}
@keyframes fadein{from{opacity:0}to{opacity:1}}
.lightbox-inner{background:var(--surface);border-radius:14px;padding:12px;width:min(94vw,560px);max-height:94vh;display:flex;flex-direction:column;gap:10px;box-shadow:0 24px 70px oklch(0.25 0.02 60 / .38)}
.lightbox-inner img{display:block;width:100%;max-height:72vh;object-fit:contain;border-radius:8px;background:var(--surface-3)}
.lightbox-bar{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}
.lightbox-text{font-size:12px;color:var(--text-2);line-height:1.55;min-width:0}
.lightbox-text b{display:block;font-size:13px;color:var(--text);margin-bottom:2px;font-weight:650}

.chips{display:flex;flex-wrap:wrap;gap:7px}
.chip{border:1px solid var(--border-strong);background:var(--surface);border-radius:8px;padding:6px 12px;font-size:12.5px;color:var(--text-2);transition:.15s}
.chip:hover{border-color:var(--accent-border)}
.chip.active{background:var(--accent);border-color:var(--accent);color:white;font-weight:560}
.chip small{display:block;font-size:10px;opacity:.7;line-height:1.2}

.result-head{flex:none;padding:18px 22px 14px;display:flex;justify-content:space-between;align-items:flex-start;gap:14px;border-bottom:1px solid var(--border)}
.result-title{font-size:16px;font-weight:650}
.result-sub{font-size:12px;color:var(--muted);margin-top:3px}
.result-actions{display:flex;gap:7px}

.config-banner{flex:none;display:flex;align-items:center;justify-content:space-between;gap:12px;margin:12px 22px 0;padding:9px 13px;border:1px solid var(--accent-border);background:var(--accent-soft);border-radius:9px;font-size:12.5px;color:var(--text-2);line-height:1.6}
.config-banner b{color:var(--accent);font-weight:650}
.progress-wrap{flex:none;padding:12px 22px 0}
.progress-top{display:flex;justify-content:space-between;font-size:12px;color:var(--text-2);margin-bottom:7px}
.progress-bar{height:5px;background:var(--surface-3);border-radius:4px;overflow:hidden}
.progress-bar div{height:100%;width:0;background:var(--accent);border-radius:4px;transition:width .3s}
.log-box{flex:none;margin:12px 22px 0;max-height:150px;overflow:auto;background:oklch(0.22 0.015 60);color:oklch(0.88 0.01 80);border-radius:9px;padding:11px 13px;font:11.5px/1.65 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre-wrap}

.tabs{flex:none;display:flex;gap:22px;padding:0 22px;border-bottom:1px solid var(--border)}
.tab{border:0;background:transparent;padding:13px 1px;font-size:13px;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px;font-weight:520}
.tab.active{color:var(--accent);border-bottom-color:var(--accent)}
.result-toolbar{flex:none;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;padding:11px 22px;border-bottom:1px solid var(--border);background:var(--surface-2)}
.toolbar-left,.toolbar-right{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.mini-check,.mini-select{display:flex;align-items:center;gap:6px;font-size:11.5px;color:var(--text-2);white-space:nowrap}
.mini-check input{accent-color:var(--accent)}
.mini-select select{width:auto;padding:4px 8px;font-size:11.5px;border-radius:7px;border:1px solid var(--border-strong);background:var(--surface)}

.result-scroll{flex:1;min-height:0;overflow-y:auto;padding:20px 22px 40px}
.empty{height:100%;min-height:330px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--muted);gap:5px}
.empty-art{display:flex;gap:5px;align-items:flex-end;height:52px;margin-bottom:14px;opacity:.5}
.empty-art span{width:22px;border-radius:4px;background:var(--accent-border)}
.empty-art span:nth-child(1){height:26px}
.empty-art span:nth-child(2){height:48px;background:var(--accent);opacity:.65}
.empty-art span:nth-child(3){height:34px}
.empty p{margin:0;font-size:15px;color:var(--text-2);font-weight:560}
.empty small{font-size:12px}

.page-card{border:1px solid var(--border);border-radius:11px;margin-bottom:14px;background:var(--surface);overflow:hidden}
.page-head{display:flex;align-items:center;gap:10px;padding:11px 14px;background:var(--surface-2);border-bottom:1px solid var(--border)}
.page-no{font-size:12px;font-weight:650;color:var(--accent);background:var(--accent-soft);border:1px solid var(--accent-border);border-radius:6px;padding:2px 8px}
.badge{font-size:10.5px;padding:2px 7px;border-radius:5px;background:var(--surface-3);color:var(--text-2)}
.badge.done{background:oklch(0.94 0.05 155);color:var(--green)}
.badge.fail{background:oklch(0.94 0.05 25);color:var(--red)}
.page-scene{font-size:12px;color:var(--text-2);flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.page-body{padding:14px}
.copy-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.copy-pill{background:var(--surface-2);border:1px solid var(--border);border-radius:7px;padding:5px 9px;font-size:12px;color:var(--text-2)}
.copy-pill b{color:var(--muted);font-weight:500;margin-right:5px;font-size:11px}
.prompt-block{margin-bottom:11px}
.prompt-label{font-size:11.5px;font-weight:600;color:var(--text-2);margin-bottom:5px;display:flex;justify-content:space-between;align-items:center}
.prompt-label span{font-weight:400;color:var(--muted)}
.prompt-block textarea{width:100%;min-height:74px;border:1px solid var(--border);border-radius:8px;padding:9px 11px;font-size:12px;line-height:1.7;resize:vertical;background:var(--surface-2);outline:none}
.prompt-block textarea:focus{border-color:var(--accent);background:var(--surface)}
.page-foot{display:flex;gap:7px;align-items:center;flex-wrap:wrap;margin-top:4px}
.page-foot .spacer{flex:1}
.mini-btn{border:1px solid var(--border-strong);background:var(--surface);border-radius:7px;padding:5px 10px;font-size:11.5px;color:var(--text-2)}
.mini-btn:hover{border-color:var(--accent-border);color:var(--accent)}
.mini-btn.primary{background:var(--accent);border-color:var(--accent);color:white}
.mini-btn.primary:hover{background:var(--accent-hover)}
.seg{display:inline-flex;border:1px solid var(--border-strong);border-radius:7px;overflow:hidden}
.seg button{border:0;background:var(--surface);padding:4px 9px;font-size:11px;color:var(--muted)}
.seg button.active{background:var(--accent-soft);color:var(--accent);font-weight:600}

.image-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:16px}
.image-card{border:1px solid var(--border);border-radius:11px;overflow:hidden;background:var(--surface)}
.image-box{position:relative;background:var(--surface-2);aspect-ratio:3/4;display:flex;align-items:center;justify-content:center;overflow:hidden}
.image-box img{width:100%;height:100%;object-fit:contain;display:block}
.image-box.r-4-3,.image-box.r-16-9{aspect-ratio:4/3}
.image-placeholder{font-size:12px;color:var(--muted);text-align:center;padding:16px;line-height:1.7}
.image-placeholder.err{color:var(--red)}
.image-meta{padding:9px 11px;border-top:1px solid var(--border)}
.image-meta .t{font-size:12px;font-weight:600;display:flex;justify-content:space-between;gap:8px}
.image-meta .s{font-size:10.5px;color:var(--muted);margin-top:2px}
.image-actions{display:flex;gap:6px;padding:0 11px 11px;flex-wrap:wrap}

/* 逐页配音（TTS）：语言模式 / 生成 / 试听 / 下载 MP3 */
.tts-box{border-top:1px dashed var(--border);padding:10px 11px 11px;background:var(--surface-2)}
.tts-row{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.tts-label{font-size:11.5px;font-weight:650;color:var(--text-2);flex:none}
.tts-mode{flex:1;min-width:78px;max-width:120px;border:1px solid var(--border-strong);background:var(--surface);border-radius:7px;padding:5px 6px;font-size:11.5px}
.tts-mode:focus{outline:2px solid var(--accent-soft);border-color:var(--accent)}
.tts-status{flex-basis:100%;font-size:10.5px;color:var(--muted);line-height:1.5;min-height:0}
.tts-status:empty{display:none}
.tts-result{margin-top:8px;min-width:0}
.tts-empty{font-size:10.5px;color:var(--muted);line-height:1.5;display:block}
.tts-player{display:flex;flex-direction:column;gap:7px;min-width:0}
.tts-player audio{width:100%;height:34px;display:block}
.tts-player .mini-btn{text-align:center;text-decoration:none;line-height:1.5}
.tts-meta{font-size:10px;color:var(--muted);line-height:1.5;word-break:break-word}
/* 设置抽屉宽 400px，音色名较长，两列并排会截断；改上下单列 */
.field-row.tts-voices{flex-direction:column;gap:0}
.field-row.tts-voices .grow{width:100%}

.drawer-mask{position:fixed;inset:0;background:oklch(0.2 0.01 60 / .28);z-index:40}
.drawer{position:fixed;top:0;right:0;bottom:0;width:400px;max-width:92vw;background:var(--surface);z-index:41;box-shadow:-12px 0 40px oklch(0.3 0.02 60 / .12);display:flex;flex-direction:column}
.drawer-left{right:auto;left:0;box-shadow:12px 0 40px oklch(0.3 0.02 60 / .12)}
.drawer-head{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;border-bottom:1px solid var(--border)}
.drawer-head h2{margin:0;font-size:16px;font-weight:650}
.icon-btn{border:0;background:transparent;font-size:16px;color:var(--muted);padding:4px 8px;border-radius:6px}
.icon-btn:hover{background:var(--surface-3);color:var(--text)}
.drawer-body{flex:1;overflow-y:auto;padding:6px 20px 24px}
.drawer-section{padding:16px 0;border-bottom:1px solid var(--border)}
.drawer-section:last-child{border-bottom:0}
.drawer-section h3{margin:0 0 13px;font-size:13px;font-weight:650}
.drawer-foot{padding:14px 20px;border-top:1px solid var(--border)}
.test-result{margin-top:11px;font-size:11.5px;line-height:1.7;white-space:pre-wrap;background:var(--surface-2);border-radius:8px;padding:10px;display:none}
.test-result.show{display:block}
.test-result .ok{color:var(--green)}
.test-result .bad{color:var(--red)}
.history-list{display:flex;flex-direction:column;gap:9px;padding-top:14px}
.history-item{border:1px solid var(--border);border-radius:10px;padding:11px 12px;cursor:pointer;transition:.15s;background:var(--surface)}
.history-item:hover{border-color:var(--accent-border);background:var(--surface-2)}
.history-item .h-t{font-size:13px;font-weight:600;display:flex;justify-content:space-between;gap:8px}
.history-item .h-s{font-size:11px;color:var(--muted);margin-top:4px}
.history-empty{font-size:12.5px;color:var(--muted);text-align:center;padding:40px 0}

.toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%);background:oklch(0.25 0.02 60);color:white;padding:10px 18px;border-radius:9px;font-size:13px;z-index:60;box-shadow:0 8px 24px oklch(0.2 0.02 60 / .2)}
.toast.bad{background:var(--red)}

/* 窄屏：左右两栏改为上下堆叠、整页滚动。
   修复前 grid 隐式行被容器高度压缩（params 仅 124px / 内容 1273px），
   .panel-scroll{overflow:visible} 令内容溢出并与结果面板重叠。 */
@media (max-width:980px){
  .app{height:100dvh}
  .layout{display:block;overflow-y:auto;overflow-x:hidden;padding:14px}
  .panel{margin-bottom:14px;min-height:auto}
  .panel:last-child{margin-bottom:0}
  .params{max-height:none}
  .panel-scroll{overflow:visible}
  .result{min-height:420px}
  .result-scroll{overflow:visible}
  .empty{min-height:260px}
}

/* 手机 / 窄预览面板：字段单列、尺寸按钮 2×2、收紧内边距 */
@media (max-width:520px){
  .topbar{height:60px;padding:0 12px;gap:8px;flex-wrap:nowrap}
  .brand{gap:9px;min-width:0}
  .brand-mark{width:30px;height:30px;padding:6px}
  .brand h1{font-size:14.5px;white-space:nowrap}
  .brand p{display:none}
  .top-actions{flex:none;gap:3px}
  .top-actions .btn{padding:6px 8px;font-size:11.5px}
  .layout{padding:10px}
  .panel{margin-bottom:10px}
  .panel-scroll{padding:16px 15px 22px}
  .field-row{flex-direction:column;gap:0}
  .field-row .grow{width:100%}
  .chips{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}
  #langChips{grid-template-columns:repeat(3,minmax(0,1fr))}
  .chips .chip{text-align:center;padding:7px 6px}
  .result-head{padding:14px;flex-direction:column;gap:10px}
  .result-actions{width:100%}
  .result-actions .btn{flex:1}
  .config-banner{margin:10px 14px 0;flex-wrap:wrap}
  .progress-wrap{padding:10px 14px 0}
  .log-box{margin:10px 14px 0}
  .tabs{padding:0 14px;gap:16px}
  .result-toolbar{padding:10px 14px}
  .result-scroll{padding:14px 14px 28px}
  .image-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px}
  .tts-box{padding:9px 9px 10px}
  .tts-row{gap:5px}
  .tts-label{flex-basis:100%}
  .tts-mode{max-width:none;flex:1}
  .drawer{width:100%;max-width:100vw}
  .page-head,.page-body,.page-foot{padding-left:11px;padding-right:11px}
}