/* 文心绘本书房 · /picturebook/ */
[hidden]{display:none!important}
:root{--teal:#1b4f47;--teal2:#2a7a6c;--mint:#6ec9b3;--coral:#c83c23;--coral-soft:#fde8e4;--paper:#fbf6ec;--card:#fff;--ink:#2b2b2b;--muted:#7a6f63;--line:#ece3d3;--gold:#e9a23b}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;background:var(--paper);color:var(--ink);line-height:1.6}
a{color:inherit}
button,input{font:inherit}
.serif{font-family:"Noto Serif SC","Songti SC","STSong",serif}
/* top bar */
.pb-top{position:sticky;top:0;z-index:40;background:rgba(251,246,236,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.pb-bar{max-width:1180px;margin:0 auto;padding:8px 16px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.pb-brand{display:flex;align-items:center;gap:8px;text-decoration:none}
.pb-brand img{height:40px;width:auto}
.pb-brand b{display:block;font-size:17px;font-weight:900;color:var(--teal);line-height:1.1}.pb-brand small{font-size:11px;color:var(--muted);font-weight:700}
.pb-nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.pb-nav a{text-decoration:none;font-weight:800;font-size:14px;padding:6px 12px;border-radius:999px;color:var(--teal)}
.pb-nav a:hover{background:#fff}
/* hero */
.pb-hero{max-width:1180px;margin:18px auto 0;padding:0 16px}
.pb-hero-in{position:relative;border-radius:26px;overflow:hidden;min-height:330px;display:flex;align-items:flex-end;color:#fff;
  background:linear-gradient(100deg,rgba(17,52,47,.88) 0%,rgba(17,52,47,.55) 45%,rgba(17,52,47,.05) 75%),url(https://visionchinese.com/wp-content/uploads/2025/03/绘本推荐网页banner.webp) center/cover no-repeat,#1b4f47}
.pb-hero-tx{padding:34px 36px;max-width:620px}
.pb-eyebrow{font-size:13px;letter-spacing:.18em;opacity:.85;font-weight:700}
.pb-hero h1{font-size:clamp(28px,4.2vw,44px);font-weight:900;line-height:1.25;margin:8px 0 10px}
.pb-hero p{font-size:16px;opacity:.92}
.pb-stats{display:flex;gap:22px;margin:16px 0 18px;flex-wrap:wrap}
.pb-stats b{display:block;font-size:30px;font-weight:900;line-height:1}.pb-stats span{font-size:13px;opacity:.85}
.pb-btns{display:flex;gap:10px;flex-wrap:wrap}
.pb-btn{display:inline-flex;align-items:center;gap:6px;border:0;border-radius:999px;padding:10px 20px;font-weight:900;font-size:15px;cursor:pointer;text-decoration:none}
.pb-btn.coral{background:var(--coral);color:#fff}.pb-btn.white{background:#fff;color:var(--teal)}.pb-btn.ghost{background:rgba(255,255,255,.14);color:#fff;border:1.5px solid rgba(255,255,255,.6)}
.pb-btn.line{background:#fff;color:var(--teal);border:1.5px solid var(--line)}
/* sections */
.pb-sec{max-width:1180px;margin:0 auto;padding:44px 16px 0}
.pb-h{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.pb-h h2{font-size:28px;font-weight:900;color:var(--teal)}
.pb-h p{color:var(--muted);font-size:15px}
.pb-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.pb-tab{border:1.5px solid var(--line);background:#fff;border-radius:16px;padding:8px 16px;cursor:pointer;text-align:left;color:var(--ink)}
.pb-tab b{display:block;font-size:17px;font-weight:900}.pb-tab span{font-size:12px;color:var(--muted)}
.pb-tab.on{background:var(--teal);border-color:var(--teal);color:#fff}.pb-tab.on span{color:#cfe9e3}
.pb-tools{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:18px}
.pb-search{flex:1;min-width:220px;position:relative}
.pb-search input{width:100%;border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:10px 16px 10px 38px;font-size:15px}
.pb-search::before{content:"🔍";position:absolute;left:14px;top:50%;transform:translateY(-50%);font-size:14px}
.pb-search input:focus{outline:none;border-color:var(--mint)}
.pb-intro{background:#fff;border:1px solid var(--line);border-left:5px solid var(--mint);border-radius:14px;padding:14px 18px;margin-bottom:18px;font-size:15px;color:#4a4339}
.pb-intro b{color:var(--teal)}
.pb-count{font-size:14px;color:var(--muted);font-weight:700}
/* book grid */
.pb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:18px}
.pb-book{background:var(--card);border-radius:16px;overflow:hidden;cursor:pointer;border:1px solid var(--line);display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s;text-align:left;padding:0;color:var(--ink)}
.pb-book:hover{transform:translateY(-4px);box-shadow:0 12px 26px rgba(80,60,30,.12)}
.pb-cv{position:relative;aspect-ratio:3/4;background:#f3ede2;overflow:hidden}
.pb-cv img{width:100%;height:100%;object-fit:cover;display:block}
.pb-gen{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:16px 14px;text-align:center;color:#fff}
.pb-gen::before{content:"";position:absolute;left:10px;top:0;bottom:0;width:6px;background:rgba(0,0,0,.12)}
.pb-gen .gt{font-family:"Noto Serif SC","Songti SC",serif;font-size:22px;font-weight:900;line-height:1.35;text-shadow:0 2px 6px rgba(0,0,0,.15)}
.pb-gen .ga{font-size:12px;opacity:.85;margin-top:10px}
.pb-gen .gd{position:absolute;right:-26px;bottom:-26px;width:110px;height:110px;border-radius:50%;background:rgba(255,255,255,.16)}
.pb-badges{position:absolute;left:8px;top:8px;display:flex;gap:4px;flex-wrap:wrap}
.pb-badges span{font-size:11px;font-weight:900;padding:2px 8px;border-radius:999px;background:rgba(255,255,255,.95);color:var(--teal)}
.pb-badges span.c{background:var(--coral);color:#fff}
.pb-fav{position:absolute;right:8px;top:8px;width:30px;height:30px;border-radius:50%;background:rgba(255,255,255,.92);display:grid;place-items:center;font-size:15px}
.pb-info{padding:10px 12px 14px;display:flex;flex-direction:column;gap:3px}
.pb-info h3{font-size:16px;font-weight:900;line-height:1.35}
.pb-info .au{font-size:12px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.pb-info .why{font-size:13px;color:#5b534a;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-top:2px}
.pb-empty{padding:40px;text-align:center;color:var(--muted)}
/* lessons */
.pb-lgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:16px}
.pb-lesson{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;display:flex;flex-direction:column}
.pb-lesson .pb-cv{cursor:zoom-in}
.pb-lesson .num{position:absolute;left:8px;top:8px;background:var(--coral);color:#fff;font-weight:900;font-size:12px;border-radius:999px;padding:2px 9px}
.pb-lesson h3{font-size:15px;font-weight:900;padding:10px 12px 6px;line-height:1.35}
.pb-lesson a.dl{margin:auto 12px 12px;text-align:center;background:var(--coral);color:#fff;border-radius:999px;padding:7px 10px;font-weight:900;font-size:14px;text-decoration:none}
/* music */
.pb-player{background:linear-gradient(120deg,#1b4f47,#2a7a6c);color:#fff;border-radius:20px;padding:18px 20px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:14px}
.pb-disc{width:64px;height:64px;border-radius:50%;background:radial-gradient(circle,#fff 0 6px,#173f39 7px 16px,#0f2e2a 17px);flex:none;box-shadow:0 4px 12px rgba(0,0,0,.3)}
.pb-player.on .pb-disc{animation:pbSpin 3s linear infinite}
@keyframes pbSpin{to{transform:rotate(360deg)}}
.pb-np{flex:1;min-width:180px}
.pb-np small{opacity:.8;font-size:12px}.pb-np b{display:block;font-size:20px;font-weight:900}
.pb-ctrl{display:flex;gap:8px}
.pb-ctrl button{border:0;width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.18);color:#fff;font-size:18px;cursor:pointer}
.pb-ctrl button.main{width:52px;height:52px;background:#fff;color:var(--teal);font-size:22px}
.pb-prog{flex-basis:100%;display:flex;align-items:center;gap:10px;font-size:12px;opacity:.9}
.pb-prog input{flex:1;accent-color:#fff}
.pb-tracks{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:10px}
.pb-track{display:flex;align-items:center;gap:12px;background:#fff;border:1.5px solid var(--line);border-radius:14px;padding:10px 12px;cursor:pointer;text-align:left;color:var(--ink)}
.pb-track i{font-style:normal;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:20px;flex:none}
.pb-track b{font-size:15px;font-weight:800}
.pb-track.on{border-color:var(--mint);background:#effaf7}
/* tips */
.pb-tips{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.pb-tip{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px 18px}
.pb-tip h3{font-size:17px;color:var(--teal);margin-bottom:6px}
.pb-tip p,.pb-tip li{font-size:14px;color:#4a4339}
.pb-tip ul{padding-left:18px}
.pb-foot{max-width:1180px;margin:50px auto 0;padding:20px 16px 50px;text-align:center;font-size:12px;color:#a39888;border-top:1px solid var(--line)}
/* modal */
.pb-ov{position:fixed;inset:0;z-index:80;background:rgba(30,25,18,.55);display:none;align-items:center;justify-content:center;padding:14px}
.pb-ov.show{display:flex}
.pb-box{background:#fff;border-radius:22px;width:min(720px,100%);max-height:92vh;overflow-y:auto;position:relative}
.pb-x{position:absolute;right:12px;top:12px;width:34px;height:34px;border-radius:50%;border:0;background:rgba(0,0,0,.06);font-size:16px;cursor:pointer;z-index:2}
.pb-d{display:grid;grid-template-columns:240px 1fr;gap:20px;padding:22px}
.pb-d .pb-cv{border-radius:14px}
.pb-d h3{font-size:24px;font-weight:900;color:var(--teal);line-height:1.3;padding-right:30px}
.pb-d .meta{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0}
.pb-d .meta span{font-size:12px;font-weight:800;background:#f3ede2;border-radius:999px;padding:3px 10px;color:#5b534a}
.pb-d p{font-size:15px;color:#3d372f;margin-top:8px}
.pb-d .lbl{display:block;font-size:12px;font-weight:900;color:var(--coral);margin-top:12px}
.pb-d .acts{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.pb-shelf{padding:22px}
.pb-shelf h3{font-size:22px;color:var(--teal);margin-bottom:4px}
.pb-shelf li{list-style:none;display:flex;align-items:center;gap:10px;padding:8px 0;border-bottom:1px dashed var(--line)}
.pb-shelf li b{flex:1}.pb-shelf li span{font-size:12px;color:var(--muted)}
.pb-shelf li button{border:0;background:none;color:var(--coral);cursor:pointer;font-size:13px}
.pb-floating{position:fixed;right:18px;bottom:96px;z-index:50;border:0;background:var(--coral);color:#fff;font-weight:900;border-radius:999px;padding:11px 18px;box-shadow:0 8px 20px rgba(200,60,35,.35);cursor:pointer;display:none}
.pb-floating.show{display:block}
#pbPrint{display:none}
@media (max-width:640px){
  .pb-grid{grid-template-columns:repeat(2,1fr);gap:12px}.pb-lgrid{grid-template-columns:repeat(2,1fr)}
  .pb-hero-in{min-height:0;background-position:70% center}.pb-hero-tx{padding:26px 20px}
  .pb-d{grid-template-columns:1fr}.pb-d .pb-cv{max-width:220px;margin:0 auto}
  .pb-nav{margin-left:0;flex-wrap:nowrap;overflow-x:auto;width:100%;scrollbar-width:none}.pb-nav::-webkit-scrollbar{display:none}.pb-nav a{flex:none;padding:4px 10px}.pb-brand img{height:32px}.pb-gen .gt{font-size:18px}
}
@media print{
  body{background:#fff}
  body>*:not(#pbPrint){display:none!important}
  #pbPrint{display:block!important;font-size:12px}
  #pbPrint h1{font-size:20px;color:#1b4f47;margin-bottom:4px}
  #pbPrint table{width:100%;border-collapse:collapse;margin-top:10px}
  #pbPrint th,#pbPrint td{border:1px solid #ccc;padding:5px 7px;text-align:left;vertical-align:top}
  #pbPrint th{background:#f3ede2}
  @page{size:A4;margin:12mm}
}