:root{
  --paper:#f4ece0; --paper2:#efe5d6; --ink:#23201c; --ink2:#5b5247;
  --accent:#7c2b27; --accent2:#9c4a3a; --gold:#b08d57; --wood:#5a3d2b; --wood2:#6e4a33;
  --line:#d8cab2; --dialog:#1c1916; --shadow:rgba(40,28,18,.25);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:"Noto Serif SC","Songti SC","Source Han Serif SC",STSong,"SimSun",serif;
  color:var(--ink); background:var(--paper);
  background-image:radial-gradient(circle at 20% 10%,rgba(176,141,87,.07),transparent 40%),
    radial-gradient(circle at 80% 90%,rgba(124,43,39,.06),transparent 45%);
  height:100vh; overflow:hidden; display:flex; flex-direction:column;
}
/* header */
header{
  flex:0 0 auto; display:flex; align-items:center; justify-content:space-between;
  padding:10px 20px; background:linear-gradient(180deg,#2a2420,#211c18); color:var(--paper);
  border-bottom:3px solid var(--gold); box-shadow:0 2px 10px var(--shadow); z-index:30;
}
header .brand{display:flex;align-items:baseline;gap:12px}
header .brand h1{font-size:20px;letter-spacing:4px;font-weight:700}
header .brand .sub{font-size:12px;color:var(--gold);letter-spacing:2px}
header .tools{display:flex;gap:8px;align-items:center}
.btn{
  font-family:inherit;cursor:pointer;border:1px solid var(--gold);background:transparent;color:var(--paper);
  padding:6px 14px;border-radius:4px;font-size:13px;letter-spacing:1px;transition:.2s;
}
.btn:hover{background:var(--gold);color:#211c18}
.btn.solid{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.solid:hover{background:var(--accent2)}
/* stage = 主区(#top) + 先生栏(#dock)。默认上下堆叠（窄屏/竖屏）。 */
#stage{flex:1 1 auto;min-height:0;display:flex;flex-direction:column;overflow:hidden}
/* top region */
#top{flex:1 1 auto; min-height:0; position:relative; overflow:hidden;}
.scroll{height:100%;overflow-y:auto;}
.scroll::-webkit-scrollbar{width:10px}
.scroll::-webkit-scrollbar-thumb{background:var(--line);border-radius:6px}
/* bookshelf */
#shelf{padding:22px 26px 40px;}
.shelf-intro{max-width:780px;margin:4px auto 22px;text-align:center;color:var(--ink2);font-size:14px;line-height:1.9}
.shelf-intro b{color:var(--accent)}
.collection{margin:0 auto 26px;max-width:1100px}
.collection h2{
  font-size:16px;letter-spacing:3px;color:var(--accent);margin-bottom:4px;
  display:flex;align-items:center;gap:10px;
}
.collection h2::before{content:"";width:18px;height:18px;border:2px solid var(--gold);transform:rotate(45deg);display:inline-block}
.collection .desc{font-size:12px;color:var(--ink2);margin-bottom:14px}
.shelf-row{
  display:flex;flex-wrap:wrap;gap:16px;padding:18px 16px 22px;border-radius:8px;
  background:linear-gradient(180deg,#6e4a33,#5a3d2b);
  box-shadow:inset 0 2px 6px rgba(0,0,0,.3),0 6px 16px var(--shadow);
  border-bottom:10px solid #4a3122;position:relative;
}
.book{
  width:120px;min-height:150px;cursor:pointer;position:relative;
  background:linear-gradient(135deg,#f7efe2,#e7d8bf);border:1px solid #cbb78f;border-left:6px solid var(--accent);
  border-radius:3px 5px 5px 3px;padding:14px 12px;display:flex;flex-direction:column;justify-content:space-between;
  box-shadow:2px 4px 10px rgba(0,0,0,.3);transition:transform .18s,box-shadow .18s;
}
.book:hover{transform:translateY(-8px) rotate(-1deg);box-shadow:4px 10px 22px rgba(0,0,0,.4)}
.book .bt{font-size:18px;font-weight:700;letter-spacing:2px;line-height:1.35;color:var(--ink);margin-top:6px}
.book .bmeta{font-size:11px;color:var(--ink2);line-height:1.6}
.book .bgenre{font-size:10px;color:#fff;background:var(--gold);padding:1px 6px;border-radius:8px;align-self:flex-start;letter-spacing:1px}
.book.classic::after{content:"经典";position:absolute;top:-8px;right:-8px;background:var(--accent);color:#fff;font-size:10px;padding:2px 7px;border-radius:10px;box-shadow:0 2px 5px var(--shadow)}
.book .bmeta .bp{color:var(--accent);font-weight:700}
.book .bmeta .bp.done{color:#3f7d4f}
.book .bprog{position:absolute;left:0;right:0;bottom:0;height:4px;background:rgba(90,61,43,.18);border-radius:0 0 4px 4px;overflow:hidden}
.book .bprog i{display:block;height:100%;background:var(--accent)}
/* 文集标题旁的整体进度 */
.collection h2 .cprog{font-size:12px;font-weight:400;color:var(--gold);letter-spacing:1px;margin-left:6px}
/* 折叠：默认两排，其余收起 */
.shelf-row.collapsed{overflow:hidden;position:relative}
.shelf-row.collapsed::after{content:"";position:absolute;left:0;right:0;bottom:0;height:42px;background:linear-gradient(to bottom,rgba(90,61,43,0),#5a3d2b);pointer-events:none}
.shelf-toggle{display:block;margin:10px auto 0;background:transparent;border:1px solid var(--gold);color:var(--accent);font-family:inherit;font-size:12px;letter-spacing:1px;padding:4px 18px;border-radius:14px;cursor:pointer;transition:.15s}
.shelf-toggle:hover{background:var(--gold);color:#211c18}
/* reader */
#reader{display:none;padding:0;height:100%}
#reader.active{display:block}
.reader-bar{
  position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 22px;background:rgba(244,236,224,.95);backdrop-filter:blur(4px);border-bottom:1px solid var(--line);
}
.reader-bar .rt{font-size:17px;font-weight:700;letter-spacing:2px}
.reader-bar .rmeta{font-size:12px;color:var(--ink2);margin-left:6px}
.reader-actions{display:flex;gap:8px;align-items:center}
.btn.dark{border-color:var(--accent);color:var(--accent)}
.btn.dark:hover{background:var(--accent);color:#fff}
.reader-body{max-width:760px;margin:0 auto;padding:26px 28px 60px}
.reader-body .lead{font-size:13px;color:var(--ink2);border-left:3px solid var(--gold);padding:6px 14px;margin-bottom:24px;line-height:1.9;background:rgba(176,141,87,.08)}
.reader-body h3{text-align:center;font-size:18px;color:var(--accent);letter-spacing:6px;margin:30px 0 18px;font-weight:700}
.para{position:relative;margin:0 0 18px;padding-right:42px}
.para p{font-size:18px;line-height:2.05;text-align:justify;text-indent:2em;letter-spacing:.5px}
.para .tbtn{
  position:absolute;top:2px;right:0;opacity:0;cursor:pointer;border:1px solid var(--gold);background:#fff;color:var(--accent);
  font-size:11px;padding:2px 7px;border-radius:4px;transition:.18s;font-family:inherit;white-space:nowrap;
}
.para:hover .tbtn{opacity:1}
.para .tbtn:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
.para .trans{
  display:none;margin-top:10px;padding:12px 16px;border-radius:6px;background:#fbf6ec;border:1px dashed var(--gold);
  font-size:15px;line-height:1.95;color:var(--ink2);text-indent:0;
}
.para .trans.show{display:block;animation:fade .3s}
.para .trans .lbl{font-size:11px;color:var(--accent);letter-spacing:2px;display:block;margin-bottom:4px}
@keyframes fade{from{opacity:0;transform:translateY(-4px)}to{opacity:1}}
.reader-tip{text-align:center;font-size:12px;color:var(--ink2);margin:0 0 18px}
/* galgame dock */
#dock{flex:0 0 auto;height:230px;position:relative;display:flex;align-items:flex-end;z-index:25;}
.avatar-wrap{position:relative;z-index:2;flex:0 0 200px;height:230px;display:flex;align-items:flex-end;justify-content:center;pointer-events:none}
.avatar-wrap svg,.avatar-wrap img{width:200px;height:225px;object-fit:contain;object-position:bottom;filter:drop-shadow(0 6px 12px rgba(0,0,0,.35));animation:idle 4.5s ease-in-out infinite}
.avatar-wrap.talking svg,.avatar-wrap.talking img{animation:talk .5s ease-in-out infinite}
@keyframes idle{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}
@keyframes talk{0%,100%{transform:translateY(0)}50%{transform:translateY(-3px) rotate(.4deg)}}
.dialog{
  position:relative;z-index:2;flex:1 1 auto;margin:0 18px 16px 0;align-self:flex-end;
  background:linear-gradient(180deg,rgba(24,21,18,.93),rgba(20,17,14,.96));
  border:1px solid var(--gold);border-radius:12px;box-shadow:0 8px 28px rgba(0,0,0,.4);
  display:flex;flex-direction:column;max-height:206px;
}
.dialog .nametag{
  position:absolute;top:-15px;left:18px;background:var(--accent);color:#fff;padding:3px 16px;border-radius:14px;
  font-size:13px;letter-spacing:4px;box-shadow:0 3px 8px var(--shadow);border:1px solid var(--gold);
}
.transcript{flex:1 1 auto;min-height:0;overflow-y:auto;padding:18px 20px 6px;color:#ece2d2;font-size:15px;line-height:1.85}
.transcript::-webkit-scrollbar{width:8px}
.transcript::-webkit-scrollbar-thumb{background:#4a4138;border-radius:6px}
.msg{margin-bottom:12px;display:flex;gap:8px}
.msg .who{flex:0 0 auto;font-size:12px;color:var(--gold);letter-spacing:1px;padding-top:2px;min-width:30px}
.msg.user .who{color:#8fb0c9}
.msg .txt{flex:1 1 auto;white-space:pre-wrap}
.msg.lx .txt{color:#f0e7d6}
.msg.user .txt{color:#cfd9e2}
.msg.sys .txt{color:#9b8f7d;font-style:italic;font-size:13px}
.typing span{display:inline-block;width:6px;height:6px;margin:0 1px;background:var(--gold);border-radius:50%;animation:blink 1.2s infinite}
.typing span:nth-child(2){animation-delay:.2s}.typing span:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,60%,100%{opacity:.25}30%{opacity:1}}
.chips{display:flex;gap:7px;flex-wrap:wrap;padding:2px 16px 8px}
.chip{font-size:12px;color:#e7dcc8;border:1px solid #5a4f40;background:rgba(255,255,255,.04);padding:3px 10px;border-radius:12px;cursor:pointer;transition:.15s}
.chip:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.inbar{display:flex;gap:8px;padding:8px 14px 12px;border-top:1px solid #3a332b}
.inbar input{
  flex:1 1 auto;background:rgba(255,255,255,.06);border:1px solid #4a4138;border-radius:8px;color:#f2ead9;
  padding:9px 14px;font-family:inherit;font-size:15px;outline:none;
}
.inbar input:focus{border-color:var(--gold)}
.inbar .send{flex:0 0 auto;background:var(--accent);border:none;color:#fff;padding:0 20px;border-radius:8px;cursor:pointer;font-family:inherit;font-size:15px;letter-spacing:2px}
.inbar .send:hover{background:var(--accent2)}
.inbar .send:disabled{opacity:.5;cursor:default}
/* modal */
.modal{position:fixed;inset:0;background:rgba(20,16,12,.6);display:none;align-items:center;justify-content:center;z-index:100}
.modal.show{display:flex}
.modal .box{background:var(--paper);width:min(520px,92vw);border-radius:10px;border-top:5px solid var(--accent);padding:24px 26px;box-shadow:0 20px 60px rgba(0,0,0,.4);max-height:90vh;overflow:auto}
.modal h3{font-size:18px;letter-spacing:2px;color:var(--accent);margin-bottom:4px}
.modal .hint{font-size:12px;color:var(--ink2);line-height:1.8;margin-bottom:16px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:var(--ink);margin-bottom:5px;letter-spacing:1px}
.field input,.field select{width:100%;padding:9px 12px;border:1px solid var(--line);border-radius:6px;font-family:inherit;font-size:14px;background:#fff;color:var(--ink)}
.field .sm{font-size:11px;color:var(--ink2);margin-top:4px}
.modal .row{display:flex;gap:10px;justify-content:flex-end;margin-top:6px}
.modal .btn{color:var(--ink);border-color:var(--accent)}
.modal .btn:hover{background:var(--accent);color:#fff}
/* 宽屏（桌面/横屏）：左侧先生栏 + 右侧主区 */
@media (min-width:820px) and (min-aspect-ratio:1/1){
  #stage{flex-direction:row}
  #dock{order:-1;flex:0 0 28%;width:28%;max-width:380px;min-width:264px;height:auto;
        flex-direction:column;align-items:stretch;
        border-right:1px solid var(--line);
        background:linear-gradient(180deg,rgba(176,141,87,.06),rgba(124,43,39,.04))}
  #top{min-width:0}
  .avatar-wrap{flex:0 0 auto;width:100%;height:auto;justify-content:center;padding:16px 0 4px}
  .avatar-wrap svg,.avatar-wrap img{width:auto;height:190px}
  .dialog{margin:0 16px 16px;flex:1 1 auto;min-height:0;max-height:none;align-self:stretch}
}

@media(max-width:680px){
  .avatar-wrap{flex-basis:96px}.avatar-wrap svg,.avatar-wrap img{width:96px;height:150px}
  .book{width:104px}#dock{height:250px}.dialog{margin-right:12px}
}