/* ============================================================
   yygq面馆 · 书房 专属样式（挂载在 theme.css 之上）
   风格：延续站点赛博朋克主题（霓虹青/品红、夜城底色、Zpix 像素字）
   ============================================================ */
.study{max-width:1060px;margin:0 auto;padding:20px 16px 90px}
.study-top{display:flex;align-items:center;gap:12px;padding:6px 2px 2px;flex-wrap:wrap}
.study-logo{font-size:26px;color:var(--txt);text-shadow:0 0 16px rgba(0,255,213,.6),0 0 46px rgba(255,0,229,.3)}
.study-tag{color:var(--dim);font-size:12px;letter-spacing:1px}
.study-back{margin-left:auto;font-size:13px;color:var(--dim);border:1px solid var(--line-3);padding:5px 12px;border-radius:999px;text-decoration:none}
.study-back:hover{color:var(--txt);border-color:var(--neon)}

.hero{border:1px solid var(--line-3);background:var(--panel);box-shadow:var(--shadow-neon);border-radius:14px;padding:18px;margin-top:16px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(120deg,rgba(0,255,213,.06),transparent 40%,rgba(255,0,229,.05));pointer-events:none}
.searchbar{display:flex;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:rgba(4,2,14,.7);position:relative}
.searchbar input{flex:1;background:transparent;border:0;outline:0;color:var(--txt);padding:13px 16px;font-size:15px;font-family:inherit;min-width:0}
.searchbar input::placeholder{color:var(--dim2)}
.searchbar button{border:0;cursor:pointer;padding:0 22px;background:linear-gradient(135deg,rgba(0,255,213,.16),rgba(255,0,229,.16));color:var(--txt);font-size:15px;font-family:inherit;border-left:1px solid var(--line)}
.searchbar button:hover{background:linear-gradient(135deg,rgba(0,255,213,.32),rgba(255,0,229,.32))}

.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;position:relative}
.chip{border:1px solid var(--line-3);border-radius:999px;padding:5px 13px;font-size:12.5px;color:var(--dim);cursor:pointer;user-select:none;transition:all .15s}
.chip:hover{color:var(--txt);border-color:var(--neon3)}
.chip.on{color:var(--txt);border-color:var(--neon);box-shadow:0 0 14px rgba(0,255,213,.28);background:rgba(0,255,213,.07)}
.hint{color:var(--dim2);font-size:12px;margin-top:12px;line-height:1.9;position:relative}

.status{color:var(--dim2);font-size:13px;margin-top:16px;min-height:20px}
.results{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:13px;margin-top:8px}
.bcard{border:1px solid var(--line-3);border-radius:12px;background:var(--panel);padding:14px 16px;cursor:pointer;transition:transform .16s ease, box-shadow .16s ease, border-color .16s ease}
.bcard:hover{transform:translateY(-2px);border-color:var(--neon);box-shadow:var(--shadow-neon)}
.bcard h3{font-size:15.5px;color:var(--txt);margin-bottom:5px;line-height:1.45}
.bcard p{font-size:12.5px;color:var(--dim);line-height:1.65;max-height:3.3em;overflow:hidden}
.badge{display:inline-block;font-size:11px;padding:2px 9px;border-radius:999px;border:1px solid var(--line);color:var(--neon);margin-top:9px}
.badge.en{border-color:var(--line-2);color:var(--neon2)}
.badge.cn{border-color:var(--gold);color:var(--gold)}

/* ---------- 书籍页 ---------- */
.book-head{display:flex;align-items:flex-start;gap:16px;flex-wrap:wrap}
.book-title{font-size:26px;line-height:1.45;color:var(--txt);text-shadow:0 0 16px rgba(0,255,213,.35);word-break:break-word}
.book-meta{color:var(--dim);font-size:13px;margin-top:8px;line-height:1.8}
.book-actions{margin-left:auto;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.nbtn{border:1px solid var(--line);border-radius:9px;padding:9px 18px;font-size:14px;color:var(--txt);background:linear-gradient(135deg,rgba(0,255,213,.1),rgba(255,0,229,.08));cursor:pointer;text-decoration:none;display:inline-block;font-family:inherit}
.nbtn:hover{box-shadow:0 0 18px rgba(0,255,213,.3);border-color:var(--neon)}
.nbtn.ghost{background:transparent;border-color:var(--line-3);color:var(--dim)}
.nbtn.ghost:hover{color:var(--txt)}

.chapters{margin-top:18px;border:1px solid var(--line-3);border-radius:12px;background:var(--panel);overflow:hidden}
.chapters .ch-head{padding:12px 18px;border-bottom:1px solid var(--line-3);color:var(--dim);font-size:13px;display:flex;justify-content:space-between;gap:10px}
.ch-list{max-height:62vh;overflow:auto}
.ch-item{display:flex;gap:10px;padding:10px 18px;border-bottom:1px dashed rgba(139,92,255,.14);cursor:pointer;color:var(--txt);font-size:14px;transition:background .12s}
.ch-item:hover{background:rgba(0,255,213,.05)}
.ch-item .no{color:var(--dim2);min-width:2.8em;text-align:right;flex-shrink:0}
.ch-item.done .t{color:var(--dim2)}
.ch-item.done .no{color:var(--neon)}

/* ---------- 阅读器 ---------- */
.rd-top{position:sticky;top:0;z-index:5;background:rgba(5,3,15,.92);border-bottom:1px solid var(--line-3)}
.rd-bar{max-width:1060px;margin:0 auto;display:flex;align-items:center;gap:12px;padding:10px 16px}
.rd-title{font-size:13px;color:var(--dim);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:46vw}
.rd-ctrl{margin-left:auto;display:flex;gap:8px;flex-wrap:wrap}
.rd-ctrl button,.rd-ctrl a{border:1px solid var(--line-3);background:transparent;color:var(--dim);border-radius:8px;padding:5px 11px;font-size:12.5px;cursor:pointer;font-family:inherit;text-decoration:none;line-height:1.8}
.rd-ctrl button:hover,.rd-ctrl a:hover{color:var(--txt);border-color:var(--neon)}
.rd-wrap{max-width:820px;margin:0 auto;padding:22px 18px 110px}
.rd-ch{font-size:21px;color:var(--txt);text-shadow:0 0 14px rgba(0,255,213,.3);margin-bottom:18px;line-height:1.6}
.rd-text{font-size:17px;line-height:2.1;color:#dff6fb;white-space:pre-wrap;word-break:break-word}
.rd-nav{display:flex;gap:12px;max-width:820px;margin:30px auto 0;padding:0 18px}
.rd-nav a{flex:1;text-align:center}
.rd-loading{color:var(--dim);text-align:center;padding:60px 0;font-size:14px}
.foot{color:var(--dim2);font-size:12px;text-align:center;margin-top:60px}
@media(max-width:640px){
  .results{grid-template-columns:1fr}
  .book-actions{margin-left:0}
  .study-logo{font-size:22px}
}