/* 3qdaichien.wanmeivn.com — one-page site: header, key art, news (read in a panel on the same page), pictures,
   download, community, footer. Dark theme with the gold of the main site. */
:root{
  --bg:#0b0f1e; --bg2:#121833; --card:#171e3b; --line:rgba(233,217,176,.16);
  --gold:#c9a45c; --gold2:#e9d9b0; --text:#e8e6e1; --mute:#a3a7b8; --red:#b3262d;
  --hd:64px; --radius:12px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:var(--hd)}
body{margin:0;background:var(--bg);color:var(--text);font:400 16px/1.6 'Be Vietnam Pro',system-ui,sans-serif}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h2,h3{font-family:'Noto Serif',serif;color:var(--gold2);margin:0}
h2{font-size:clamp(24px,3vw,34px)}
.wrap{width:min(1180px,100% - 32px);margin:0 auto}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;padding:0 18px;border-radius:8px;
  font:600 15px/1 'Be Vietnam Pro',sans-serif;text-decoration:none;cursor:pointer;border:1px solid var(--gold);white-space:nowrap;
  transition:filter .15s,background .15s}
.btn-gold{background:linear-gradient(180deg,#e2c27a,#b88d3f);color:#1a1206;border-color:#e2c27a}
.btn-line{background:rgba(11,15,30,.55);color:var(--gold2)}
.btn:hover{filter:brightness(1.12)}
.btn-lg{min-height:52px;padding:0 28px;font-size:17px}

/* header */
.hd{position:fixed;inset:0 0 auto;height:var(--hd);z-index:20;display:flex;align-items:center;gap:24px;padding:0 24px;
  background:rgba(11,15,30,.82);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hd-logo img{height:48px;width:auto}
.hd-nav{display:flex;gap:4px;margin-right:auto}
.hd-nav>a{padding:8px 14px;border-radius:8px;text-decoration:none;color:var(--text);font-weight:500}
.hd-nav>a:hover,.hd-nav>a.on{color:var(--gold2);background:rgba(201,164,92,.12)}
.hd-acc{display:flex;gap:10px}
.hd-acc-m{display:none}
.hd-menu{display:none;width:44px;height:44px;border:1px solid var(--gold);border-radius:10px;background:var(--bg);cursor:pointer;position:relative}
.hd-menu span,.hd-menu span::before,.hd-menu span::after{position:absolute;left:11px;right:11px;height:2px;background:var(--gold2);content:'';transition:transform .2s}
.hd-menu span{top:21px}.hd-menu span::before{top:-7px;left:0;right:0}.hd-menu span::after{top:7px;left:0;right:0}
.hd-menu[aria-expanded="true"] span{background:transparent}
.hd-menu[aria-expanded="true"] span::before{transform:translateY(7px) rotate(45deg)}
.hd-menu[aria-expanded="true"] span::after{transform:translateY(-7px) rotate(-45deg)}

/* key art: the whole picture under the header, buttons over its lower part */
.kv{position:relative;margin-top:var(--hd);background:#000}
.kv-art{width:100%}
.kv-cta{position:absolute;left:0;right:0;bottom:6%;display:flex;justify-content:center;gap:16px;flex-wrap:wrap;padding:0 16px}

/* sections */
.sec{padding:72px 0}
.sec-alt{background:var(--bg2)}
.sec-hd{display:flex;align-items:end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:28px}

/* news */
.tabs{display:flex;gap:6px;flex-wrap:wrap}
.tabs button{border:1px solid var(--line);background:transparent;color:var(--mute);padding:8px 16px;border-radius:999px;cursor:pointer;
  font:500 14px/1 'Be Vietnam Pro',sans-serif}
.tabs button[aria-selected="true"]{background:var(--gold);color:#1a1206;border-color:var(--gold)}
.news{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  cursor:pointer;text-align:left;padding:0;color:inherit;font:inherit;transition:transform .15s,border-color .15s}
.card:hover{transform:translateY(-3px);border-color:rgba(201,164,92,.5)}
.card img{aspect-ratio:16/9;object-fit:cover;width:100%;background:#0e1329}
.card-in{padding:14px 16px 18px;display:flex;flex-direction:column;gap:6px}
.card-meta{font-size:13px;color:var(--mute)}
.card-meta b{color:var(--gold);font-weight:600;margin-right:8px}
.card h3{font:600 17px/1.4 'Be Vietnam Pro',sans-serif;color:var(--text)}
.card p{margin:0;font-size:14px;color:var(--mute);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-empty{grid-column:1/-1;text-align:center;color:var(--mute);padding:40px 0}
.news-more{display:flex;margin:28px auto 0}

/* pictures: swipe or arrows */
.gal{position:relative}
.gal-track{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;border-radius:var(--radius)}
.gal-track::-webkit-scrollbar{display:none}
.gal-track img{flex:0 0 100%;scroll-snap-align:center;border-radius:var(--radius);aspect-ratio:1211/680;object-fit:cover}
.gal-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:2;width:48px;height:48px;border-radius:50%;border:1px solid var(--gold);
  background:rgba(11,15,30,.7);color:var(--gold2);font-size:28px;line-height:1;cursor:pointer}
.gal-prev{left:12px}.gal-next{right:12px}
.gal-dots{display:flex;justify-content:center;gap:8px;margin-top:16px}
.gal-dots button{width:10px;height:10px;border-radius:50%;border:0;padding:0;background:var(--line);cursor:pointer}
.gal-dots button[aria-current="true"]{background:var(--gold)}

/* download */
.dl{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;background:linear-gradient(90deg,#1a2144,#121833);
  border:1px solid var(--line);border-radius:var(--radius);padding:32px}
.dl p{margin:8px 0 0;color:var(--mute)}

/* community */
.social{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.soc{display:flex;flex-direction:column;align-items:center;gap:6px;padding:28px 16px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);text-decoration:none;cursor:pointer;text-align:center}
.soc:hover{border-color:var(--gold)}
.soc small{color:var(--mute)}
.soc-ic{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;background:#0068ff;color:#fff;font-weight:700;font-size:14px;margin-bottom:6px}
.soc-fb{background:#1877f2 center/28px no-repeat url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M14 8h3V4h-3c-2.8 0-5 2.2-5 5v2H7v4h2v8h4v-8h3l1-4h-4V9c0-.6.4-1 1-1z'/%3E%3C/svg%3E")}

/* footer */
.ft{border-top:1px solid var(--line);padding:28px 0 36px;color:var(--mute);font-size:14px}
.ft-in{display:flex;align-items:center;gap:18px}
.ft img{height:52px;width:auto}
.ft p{margin:2px 0}
.ft-note{font-size:13px}

/* article reader: opens over the page */
.rd{position:fixed;inset:0;z-index:40;display:flex;justify-content:center;align-items:flex-start;padding:5vh 16px;overflow-y:auto}
.rd[hidden]{display:none}
.rd-bg{position:fixed;inset:0;background:rgba(3,5,12,.78)}
.rd-box{position:relative;width:min(820px,100%);background:#10152b;border:1px solid var(--line);border-radius:var(--radius);padding:36px 40px 44px}
.rd-x{position:absolute;top:10px;right:10px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:transparent;
  color:var(--gold2);font-size:28px;line-height:1;cursor:pointer}
.rd-meta{margin:0 0 8px;color:var(--mute);font-size:14px}
.rd-meta b{color:var(--gold);margin-right:8px}
.rd-box h3{font-size:clamp(22px,2.6vw,30px);line-height:1.35;margin-bottom:18px;padding-right:40px}
.rd-body{color:#d9d7d1;overflow-wrap:anywhere}
.rd-body img{border-radius:8px;margin:14px auto}
.rd-body h2,.rd-body h3,.rd-body h4{font-family:'Be Vietnam Pro',sans-serif;color:var(--gold2);font-size:20px;margin:26px 0 10px}
.rd-body a{color:var(--gold2)}
.rd-body table{width:100%;border-collapse:collapse;font-size:14px;display:block;overflow-x:auto}
.rd-body th,.rd-body td{border:1px solid var(--line);padding:8px 10px}
.rd-body blockquote{margin:16px 0;padding:10px 16px;border-left:3px solid var(--gold);background:rgba(201,164,92,.08)}
.rd-load{color:var(--mute)}
body.rd-open{overflow:hidden}

/* tablets and phones */
@media (max-width:1024px){
  .hd{gap:12px;padding:0 12px}
  .hd>.hd-acc{display:none}
  .hd-menu{display:block;margin-left:auto}
  .hd-nav{display:none;position:fixed;top:var(--hd);left:0;right:0;flex-direction:column;gap:0;padding:8px 16px 18px;background:#0b0f1e;
    border-bottom:1px solid var(--line);margin:0}
  .hd-nav.open{display:flex}
  .hd-nav>a{padding:14px 8px;border-bottom:1px solid var(--line);border-radius:0}
  .hd-acc-m{display:flex;margin-top:14px}
  .hd-acc-m .btn{flex:1;min-height:44px}
  .news{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  :root{--hd:56px}
  .hd-logo img{height:40px}
  .sec{padding:48px 0}
  .kv-cta{position:static;padding:16px;background:var(--bg)}
  .kv-cta .btn{flex:1 1 100%}
  .news{grid-template-columns:1fr;gap:14px}
  .card{flex-direction:row}
  .card img{width:38%;aspect-ratio:4/3;flex:0 0 38%}
  .card-in{padding:10px 12px}
  .card h3{font-size:15px}
  .card p{-webkit-line-clamp:2;font-size:13px}
  .gal-nav{display:none}
  .gal-track{gap:10px}
  .gal-track img{flex-basis:88%}
  .dl{padding:22px;flex-direction:column;align-items:stretch;text-align:center}
  .social{grid-template-columns:1fr;gap:12px}
  .soc{display:grid;grid-template-columns:48px 1fr;column-gap:14px;row-gap:2px;align-items:center;text-align:left;padding:16px}
  .soc-ic{margin:0;width:48px;height:48px;grid-row:span 2}
  .soc b{align-self:end}
  .soc small{align-self:start}
  .rd{padding:0}
  .rd-box{border-radius:0;min-height:100%;padding:56px 18px 36px}
}