:root{
  --paper:#f3ead6; --paper-edge:#e8dcc0; --paper-hi:#fbf6ea;
  --ink:#3b2a1c; --ink-soft:#6b5840;
  --amber:#b8860b; --amber-deep:#9a6a0c;
  --rule:#c9b88f; --shadow:rgba(59,42,28,.12);
  --err:#a0392b;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{height:100%;margin:0;max-width:100%;overflow-x:hidden}
body{
  background:var(--paper);
  background-image:radial-gradient(rgba(120,90,40,.03) 1px,transparent 1px);
  background-size:3px 3px;
  color:var(--ink);
  font-family:"Crimson Text",Georgia,"Times New Roman",serif;
  font-size:18px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -webkit-text-size-adjust:100%;
}

/* 口令门 */
.gate{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:var(--paper);z-index:50;padding:1rem}
.gate-card{text-align:center;max-width:320px}
.gate-card h1{margin:0;font-size:1.9rem;color:var(--amber-deep);font-weight:400}
.gate-sub{color:var(--ink-soft);margin:.2rem 0 1.6rem;font-style:italic;font-size:.95rem}
.gate-card input{display:block;width:100%;margin-top:.5rem;padding:.7rem .8rem;font-size:1rem;border:1px solid var(--rule);border-radius:8px;background:var(--paper-hi);color:var(--ink);font-family:inherit;text-align:center;box-sizing:border-box}
#pw-btn{margin:.8rem auto 0;padding:.55rem 1.6rem;background:var(--amber);color:#fff;border:none;border-radius:8px;font-size:1rem;cursor:pointer;font-family:inherit}
#pw-btn:hover{background:var(--amber-deep)}
.err{color:var(--err);font-size:.85rem;min-height:1.1rem;margin-top:.6rem}
#gate input{display:block;width:100%;margin-top:.5rem}
/* 书架 - 番茄式: 扁平、高留白、2:3封面、左对齐 */
.shelf{display:flex;flex-direction:column;height:100vh;height:100dvh;background:var(--paper)}
.shelf-main{flex:1;overflow-y:auto;padding:1.8rem 1.2rem 2.5rem;-webkit-overflow-scrolling:touch}
.shelf-main::-webkit-scrollbar{display:none}
.books{display:grid;grid-template-columns:repeat(3,1fr);gap:1.8rem 1.1rem;max-width:560px;margin:0 auto}
@media(min-width:600px){.books{grid-template-columns:repeat(4,1fr);max-width:760px;gap:2.2rem 1.4rem}}
@media(min-width:900px){.books{grid-template-columns:repeat(5,1fr);max-width:920px;gap:2.4rem 1.6rem}}
.book-card{cursor:pointer;transition:transform .2s}
.book-card:hover{transform:translateY(-3px)}
.book-card .cover{width:100%;aspect-ratio:2/3;object-fit:cover;border-radius:4px;box-shadow:0 1px 4px rgba(59,42,28,.1);background:var(--paper-edge);display:block}
.book-info{margin-top:.55rem;text-align:left}
.book-title{color:var(--ink);font-size:.88rem;line-height:1.3;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.book-author{color:var(--ink-soft);font-size:.74rem;line-height:1.4;margin-top:.1rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.book-meta{margin-top:.35rem;display:flex;align-items:center;gap:.4rem;flex-wrap:wrap}
.badge{display:inline-block;padding:.12rem .5rem;font-size:.62rem;border-radius:10px;background:rgba(184,134,11,.15);color:var(--amber-deep);line-height:1.5}
.dur{color:var(--ink-soft);font-size:.68rem;opacity:.8}
.reader{display:flex;flex-direction:column;height:100vh;height:100dvh}

/* app 布局 */
#app{display:flex;flex-direction:column;height:100vh;height:100dvh}
.topbar{display:flex;align-items:center;gap:.5rem;padding:.6rem .7rem;border-bottom:1px solid var(--rule);background:var(--paper);flex:none}
.title{font-style:italic;color:var(--amber-deep);font-size:1.05rem;flex:1;min-width:0;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ch-btn{background:transparent;border:1px solid var(--rule);border-radius:8px;padding:.35rem .7rem;color:var(--ink);cursor:pointer;font-family:inherit;font-size:.9rem}
.icon-btn{width:2.2rem;height:2.2rem;border-radius:50%;border:1px solid var(--rule);background:transparent;color:var(--ink-soft);cursor:pointer;flex:none;display:inline-flex;align-items:center;justify-content:center;padding:0;font-size:1rem;font-family:inherit;line-height:1}
.icon-btn:hover{background:var(--paper-hi);color:var(--amber-deep);border-color:var(--amber)}
.icon-btn.active{background:var(--amber);color:#fff;border-color:var(--amber)}
.top-actions{display:flex;gap:.4rem;flex:none}

/* 滚动区 + 渐隐遮罩 */
.scroll-area{flex:1;min-width:0;overflow-y:auto;overflow-x:hidden;padding:0 1.2rem;
  -webkit-mask-image:linear-gradient(to bottom,transparent 0,#000 11%,#000 89%,transparent 100%);
  mask-image:linear-gradient(to bottom,transparent 0,#000 11%,#000 89%,transparent 100%);
  scroll-behavior:smooth;-webkit-overflow-scrolling:touch}
.text{padding:2.5rem 0;max-width:680px;margin:0 auto;overflow-wrap:break-word;word-break:break-word}
.seg{color:var(--ink-soft);opacity:.6;margin:0 0 .35rem;cursor:pointer;transition:color .3s,opacity .3s}
.seg:hover{opacity:.85}
.seg.active{color:var(--amber);opacity:1}
.ch-title{color:var(--amber-deep);font-size:1.3rem;font-weight:400;margin:2.2rem 0 .9rem;text-align:center;font-style:italic;letter-spacing:.05em;border-bottom:1px solid var(--rule);padding-bottom:.4rem}
.ch-title:first-child{margin-top:.5rem}

/* 回到当前句 */
.back-btn{position:fixed;right:1rem;bottom:5.5rem;background:var(--amber);color:#fff;border:none;border-radius:20px;padding:.5rem 1rem;font-size:.85rem;cursor:pointer;box-shadow:0 2px 8px var(--shadow);z-index:20;font-family:inherit}

/* 播放器 */
.player{display:flex;align-items:center;gap:.6rem;padding:.7rem .8rem;border-top:1px solid var(--rule);background:var(--paper);flex:none;max-width:100%}
.play{width:2.4rem;height:2.4rem;border-radius:50%;border:none;background:var(--amber);color:#fff;font-size:1rem;cursor:pointer;flex:none}
.play:hover{background:var(--amber-deep)}
.ch-nav{width:1.9rem;height:1.9rem;border-radius:50%;border:1px solid var(--rule);background:transparent;color:var(--ink-soft);cursor:pointer;font-size:.7rem;flex:none}
.ch-nav:hover{background:var(--paper-hi);color:var(--amber-deep);border-color:var(--amber)}
.seek{ -webkit-appearance:none; appearance:none; flex:1; min-width:0; height:8px; background:var(--paper-edge); border-radius:4px; outline:none; cursor:pointer; accent-color:var(--amber) }
.seek::-webkit-slider-thumb{ -webkit-appearance:none; width:18px; height:18px; border-radius:50%; background:var(--amber); cursor:pointer; box-shadow:0 1px 3px var(--shadow) }
.seek::-moz-range-thumb{ width:18px; height:18px; border-radius:50%; background:var(--amber); cursor:pointer; border:none }
.time{font-size:.75rem;color:var(--ink-soft);white-space:nowrap;font-variant-numeric:tabular-nums;flex:none}

/* 章节抽屉: 手机=底部 / 桌面=左侧栏 */
.drawer{position:fixed;left:0;right:0;bottom:0;max-height:60vh;overflow-y:auto;background:var(--paper);border-top:1px solid var(--rule);box-shadow:0 -4px 16px var(--shadow);z-index:30;padding:1rem 1rem 1.5rem}
.drawer-head{font-style:italic;color:var(--amber-deep);margin-bottom:.6rem;font-size:1.1rem}
.ch-list{list-style:none;margin:0;padding:0}
.ch-list li{padding:.55rem .2rem;border-bottom:1px solid var(--paper-edge);cursor:pointer}
.ch-list li:hover{background:var(--paper-hi)}
.ch-list .n{color:var(--amber-deep);font-weight:bold;margin-right:.6rem}
.ch-list .preview{color:var(--ink-soft);font-size:.92rem}
.top-actions{display:flex;gap:.4rem}
.sleep-label{color:var(--ink-soft);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;margin:.2rem 0 .5rem}
.sleep-opts{display:grid;grid-template-columns:repeat(3,1fr);gap:.5rem;margin-bottom:.7rem}
.sleep-opt{padding:.75rem .4rem;border:1px solid var(--rule);border-radius:8px;background:var(--paper-hi);color:var(--ink);cursor:pointer;font-family:inherit;font-size:.95rem;font-variant-numeric:tabular-nums}
.sleep-opt:hover{background:var(--amber);color:#fff;border-color:var(--amber)}
.sleep-row{display:flex;gap:.5rem;margin-bottom:.7rem;align-items:center}
.sleep-row input{flex:1;min-width:0;padding:.7rem;border:1px solid var(--rule);border-radius:8px;background:var(--paper-hi);color:var(--ink);font-family:inherit;text-align:center;font-size:1rem}
.sleep-end{display:block;width:100%}
.sleep-active{display:flex;flex-direction:column;align-items:center;gap:.3rem;padding:.3rem 0 1rem;margin-bottom:.6rem;border-bottom:1px dashed var(--rule)}
.sleep-countdown{font-size:2.6rem;font-weight:300;color:var(--amber-deep);font-variant-numeric:tabular-nums;line-height:1;letter-spacing:.02em}
.sleep-detail{color:var(--ink-soft);font-size:.8rem;font-style:italic}
.sleep-cancel{margin-top:.45rem;padding:.5rem 1.5rem;background:transparent;border:1px solid var(--rule);border-radius:20px;color:var(--ink-soft);cursor:pointer;font-family:inherit;font-size:.85rem}
.sleep-cancel:hover{border-color:var(--err);color:var(--err)}

@media(min-width:760px){
  .text{font-size:19.5px}
  .drawer{left:0;right:auto;top:0;bottom:0;max-height:none;width:320px;border-top:none;border-right:1px solid var(--rule);box-shadow:4px 0 16px var(--shadow)}
}