:root{
  --paper:#eaf1f8; --paper-2:#dce7f2; --card:#f6f9fd; --ink:#18283d; --ink-2:#3f526b; --muted:#6f839c;
  --rule:#c6d5e5; --accent:#2a64a0; --accent-2:#4f7aa6; --focus:#2a64a055;
  --sky1:#cfe1f3; --sky2:#e3eef9;
  --display:"Cormorant Garamond",Georgia,serif; --serif:"Noto Serif",Georgia,serif; --ui:"Be Vietnam Pro",system-ui,sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#0e1724; --paper-2:#152233; --card:#13202f; --ink:#e3ebf5; --ink-2:#b0c1d5; --muted:#7c90a8;
    --rule:#24364b; --accent:#82b4e6; --accent-2:#a2c3e3; --focus:#82b4e655; --sky1:#15263b; --sky2:#101c2b; color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --paper:#0e1724; --paper-2:#152233; --card:#13202f; --ink:#e3ebf5; --ink-2:#b0c1d5; --muted:#7c90a8;
  --rule:#24364b; --accent:#82b4e6; --accent-2:#a2c3e3; --focus:#82b4e655; --sky1:#15263b; --sky2:#101c2b; color-scheme:dark;
}
*{box-sizing:border-box}
html,body{margin:0}
body{
  background:var(--paper) radial-gradient(ellipse 70% 340px at 18% 0,var(--sky1),transparent 70%) no-repeat, radial-gradient(ellipse 60% 300px at 85% 40px,var(--sky2),transparent 70%) no-repeat;
  background-color:var(--paper); color:var(--ink); font-family:var(--ui); min-height:100vh; display:flex; flex-direction:column;
  -webkit-user-select:none; user-select:none; -webkit-touch-callout:none; -webkit-tap-highlight-color:transparent;
}
input{-webkit-user-select:text; user-select:text}
a{color:inherit; text-decoration:none}
button{font:inherit; color:inherit; cursor:pointer}
:focus-visible{outline:3px solid var(--focus); outline-offset:2px; border-radius:6px}

.top{position:sticky; top:0; z-index:10; display:flex; align-items:center; justify-content:space-between; gap:12px;
  padding:10px max(16px,calc((100vw - 1080px)/2)); background:color-mix(in srgb,var(--paper) 88%,transparent);
  backdrop-filter:blur(8px); border-bottom:1px solid var(--rule)}
.brand{display:flex; align-items:center; gap:10px; min-width:0}
.seal{display:inline-grid; place-items:center; width:32px; height:32px; border-radius:7px; background:var(--accent); color:var(--paper);
  font:600 15px/1 var(--display); letter-spacing:.5px; flex:none}
.brand-text{font:600 21px/1.1 var(--display); white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
.brand-text i{color:var(--accent); font-style:italic}
.brand-text .short{display:none}
.tools button{display:inline-grid; place-items:center}
@media (max-width:440px){ .brand-text .long{display:none} .brand-text .short{display:inline} }
.tools{display:flex; gap:6px; flex:none}
.tools button{border:1px solid var(--rule); background:var(--card); border-radius:8px; height:34px; min-width:38px; padding:0 8px; font-size:14px}
.tools button:hover{border-color:var(--accent)}

main{flex:1; width:100%; max-width:1080px; margin:0 auto; padding:24px 16px 64px}
.foot{text-align:center; color:var(--muted); font-size:12.5px; padding:20px 16px 28px; border-top:1px solid var(--rule)}
.loading,.empty{color:var(--muted); padding:48px 0; text-align:center; font-size:15px}
.noscript{text-align:center; padding:40px}

/* home */
.hero{padding:28px 0 8px; text-align:center}
.hero h1{font:500 clamp(34px,6vw,58px)/1.05 var(--display); margin:0 0 10px; letter-spacing:-.5px}
.hero h1 i{color:var(--accent)}
.hero p{color:var(--ink-2); margin:0 auto; max-width:560px; font:italic 17px/1.6 var(--serif)}
.authors{display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:18px; margin:34px 0 30px}
.author{position:relative; display:block; background:var(--card); border:1px solid var(--rule); border-radius:16px; padding:26px 24px 22px; overflow:hidden;
  transition:transform .18s ease, border-color .18s ease}
.author:hover{transform:translateY(-2px); border-color:var(--accent)}
.author::after{content:attr(data-mono); position:absolute; right:-6px; bottom:-34px; font:600 130px/1 var(--display); color:var(--accent); opacity:.08}
.author h2{font:600 32px/1.1 var(--display); margin:0 0 4px}
.author .yrs{color:var(--muted); font-size:13.5px; margin-bottom:16px}
.author .stats{display:flex; gap:20px; flex-wrap:wrap}
.stat b{display:block; font:600 28px/1 var(--display); color:var(--accent)}
.stat span{font-size:13px; color:var(--ink-2)}

.search{position:relative; max-width:640px; margin:0 auto 18px}
.search input{width:100%; height:48px; border-radius:24px; border:1px solid var(--rule); background:var(--card); color:var(--ink);
  padding:0 20px 0 46px; font:16px var(--ui)}
.search input:focus{outline:none; border-color:var(--accent); box-shadow:0 0 0 3px var(--focus)}
.search svg{position:absolute; left:17px; top:15px; width:18px; height:18px; color:var(--muted)}

/* lists */
.page-head{display:flex; align-items:flex-end; justify-content:space-between; gap:16px; flex-wrap:wrap; margin:6px 0 18px}
.page-head h1{font:600 clamp(30px,5vw,44px)/1.05 var(--display); margin:0}
.crumb{font-size:13px; color:var(--muted); margin-bottom:6px; display:block}
.crumb:hover{color:var(--accent)}
.tabs{display:flex; gap:4px; background:var(--paper-2); border-radius:12px; padding:4px}
.tabs a{padding:8px 16px; border-radius:9px; font-size:14.5px; color:var(--ink-2); font-weight:500}
.tabs a.on{background:var(--card); color:var(--ink); box-shadow:0 1px 2px #0002}
.list-tools{display:flex; gap:12px; align-items:center; flex-wrap:wrap; margin-bottom:12px}
.list-tools .search{margin:0; flex:1; min-width:220px; max-width:none}
.count{font-size:13px; color:var(--muted)}
.letters{display:flex; flex-wrap:wrap; gap:4px; margin:4px 0 18px}
.letters a{min-width:30px; height:30px; display:grid; place-items:center; border-radius:8px; font-size:13.5px; color:var(--ink-2); border:1px solid transparent}
.letters a:hover{border-color:var(--rule); color:var(--accent)}
.grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(250px,1fr)); gap:2px 22px}
.letter-h{grid-column:1/-1; font:600 22px/1 var(--display); color:var(--accent); margin:18px 0 4px; padding-bottom:6px; border-bottom:1px solid var(--rule); scroll-margin-top:80px}
.item{display:flex; justify-content:space-between; align-items:baseline; gap:10px; padding:9px 2px; border-bottom:1px dashed var(--rule); font:16.5px/1.35 var(--serif)}
.item:hover .t{color:var(--accent)}
.item .m{font:12.5px var(--ui); color:var(--muted); flex:none}
.item .who{font:12px var(--ui); color:var(--accent-2); display:block; margin-top:2px}
.plays{display:grid; grid-template-columns:repeat(auto-fill,minmax(230px,1fr)); gap:14px}
.play{background:var(--card); border:1px solid var(--rule); border-radius:12px; padding:16px 18px 14px; transition:border-color .15s, transform .15s}
.play:hover{border-color:var(--accent); transform:translateY(-1px)}
.play .t{font:600 21px/1.15 var(--display); margin-bottom:8px}
.play .m{font-size:12.5px; color:var(--muted)}
.results h3{font:600 15px var(--ui); color:var(--ink-2); margin:22px 0 6px; text-transform:uppercase; letter-spacing:.6px}

/* reader */
.reader{max-width:760px; margin:0 auto}
.reader-head{text-align:center; margin:4px 0 26px}
.reader-head .crumb{display:inline-block}
.reader-head h1{font:600 clamp(30px,5.5vw,46px)/1.1 var(--display); margin:4px 0 6px}
.reader-head .by{color:var(--accent-2); font-size:14px; letter-spacing:.4px}
.orn{display:block; text-align:center; color:var(--accent); margin:10px 0 0; font-size:18px; letter-spacing:10px}
.text{position:relative; margin:0 auto}
.text canvas{display:block; pointer-events:none}
.blk{position:relative}
.shield{position:absolute; inset:0; z-index:2}
.pager{display:flex; justify-content:space-between; gap:12px; margin:38px 0 0; padding-top:18px; border-top:1px solid var(--rule)}
.pager a{max-width:48%; font-size:13px; color:var(--muted)}
.pager a b{display:block; font:600 18px/1.2 var(--display); color:var(--ink); margin-top:3px}
.pager a:hover b{color:var(--accent)}
.pager .next{text-align:right; margin-left:auto}
.play-layout{display:grid; grid-template-columns:200px minmax(0,1fr); gap:36px; align-items:start}
.toc{position:sticky; top:72px; max-height:calc(100vh - 96px); overflow:auto; font-size:13px; padding-right:6px}
.toc b{display:block; font:600 12px var(--ui); color:var(--muted); letter-spacing:.8px; text-transform:uppercase; margin-bottom:8px}
.toc a{display:block; padding:5px 8px; border-radius:6px; color:var(--ink-2); line-height:1.3}
.toc a:hover,.toc a.on{background:var(--paper-2); color:var(--accent)}
.toc-mobile{display:none}
@media (max-width:860px){
  .play-layout{grid-template-columns:1fr}
  .toc{display:none}
  .toc-mobile{display:block; margin:0 auto 18px; max-width:360px}
  .toc-mobile select{width:100%; height:40px; border-radius:10px; border:1px solid var(--rule); background:var(--card); color:var(--ink); padding:0 10px; font:14px var(--ui)}
}
@media (max-width:520px){
  .brand-text{font-size:18px}
  main{padding-top:16px}
  .author{padding:22px 18px 18px}
}
.navlink{display:inline-grid; place-items:center; height:34px; padding:0 12px; border-radius:8px; font-size:14px; font-weight:500; color:var(--ink-2); border:1px solid transparent}
.navlink:hover{color:var(--accent); border-color:var(--rule)}
body.locked .tools, body.locked .foot{visibility:hidden}
.lock{max-width:380px; margin:8vh auto 0; text-align:center; background:var(--card); border:1px solid var(--rule); border-radius:18px; padding:34px 28px 26px; box-shadow:0 18px 50px -24px #1b3a6355}
.lock .seal.big{width:52px; height:52px; font-size:22px; border-radius:12px; margin-bottom:14px}
.lock h1{font:600 28px/1.15 var(--display); margin:0 0 6px}
.lock h1 i{color:var(--accent)}
.lock p{color:var(--ink-2); margin:0 0 20px; font-size:14.5px}
.lock input[type=password]{width:100%; height:46px; border-radius:12px; border:1px solid var(--rule); background:var(--paper); color:var(--ink); padding:0 14px; font:16px var(--ui)}
.lock input[type=password]:focus{outline:none; border-color:var(--accent); box-shadow:0 0 0 3px var(--focus)}
.lock .remember{display:flex; gap:8px; align-items:center; justify-content:center; font-size:13.5px; color:var(--ink-2); margin:14px 0 16px}
.lock button{width:100%; height:46px; border:0; border-radius:12px; background:var(--accent); color:#fff; font:600 15.5px var(--ui)}
.lock button:disabled{opacity:.7}
.lock .err{color:#c0392b; font-size:14px; min-height:20px; margin-top:12px}
:root[data-theme="dark"] .lock button{color:#0e1724}
.video-card{display:flex; align-items:center; gap:16px; background:var(--card); border:1px solid var(--rule); border-radius:16px; padding:20px 22px; grid-column:1/-1; transition:border-color .18s}
.video-card:hover{border-color:var(--accent)}
.video-card .play-ico{display:grid; place-items:center; width:48px; height:48px; border-radius:50%; background:var(--accent); color:var(--card); flex:none}
.video-card b{display:block; font:600 24px/1.1 var(--display)}
.video-card span span{font-size:13.5px; color:var(--ink-2)}
.video-frame{position:relative; aspect-ratio:16/9; width:100%; border-radius:14px; overflow:hidden; background:#000; border:1px solid var(--rule)}
.video-frame iframe{position:absolute; inset:0; width:100%; height:100%; border:0}
.video-note{color:var(--ink-2); font-size:14px; margin:14px 2px}
.video-note a{color:var(--accent); text-decoration:underline}
@media (max-width:440px){ .navlink{padding:0 8px} .tools{gap:4px} .tools button{min-width:34px; padding:0 6px} }
@media print{ body *{display:none!important} body::after{content:"Không hỗ trợ in nội dung này."; display:block; padding:40px; font:16px sans-serif} }