/* =========================================================
   Brilliant Art Rhapsody 2026 — IACF static site
   Elegant bilingual art-catalogue theme
   ========================================================= */
:root{
  --paper:#f6f1e7;
  --paper-2:#efe7d6;
  --ink:#1c1a17;
  --ink-soft:#3a352d;
  --muted:#726a5b;
  --line:#d9cdb4;
  --gold:#a6812e;
  --gold-soft:#c9a24b;
  --seal:#9a2b23;
  --white:#fffdf8;
  --shadow:0 18px 46px -22px rgba(28,26,23,.55);
  --serif-latin:"Cormorant Garamond",Georgia,"Times New Roman",serif;
  --serif-cn:"Noto Serif SC",serif;
  --sans:"Inter","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --maxw:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);line-height:1.7;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--gold-soft);color:#1c1a17}

/* ---------- Top navigation ---------- */
.nav{position:sticky;top:0;z-index:60;background:rgba(246,241,231,.86);
  backdrop-filter:saturate(1.3) blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;
  justify-content:space-between;gap:1rem;padding:.7rem 1.4rem}
.brand{display:flex;align-items:center;gap:.65rem;line-height:1}
.brand .logo{width:44px;height:44px;object-fit:contain;border-radius:50%;flex:0 0 auto}
.brand .seal{width:38px;height:38px;border-radius:50%;background:var(--seal);
  color:#fff;place-items:center;font-family:var(--serif-cn);
  font-weight:700;font-size:1.15rem;box-shadow:inset 0 0 0 2px rgba(255,255,255,.25)}
.brand .bn{display:block}
.brand b{font-family:var(--serif-latin);font-weight:600;font-size:.92rem;letter-spacing:.02em;
  line-height:1.15;display:block;max-width:24ch}
.brand .bn>span{display:block;font-size:.6rem;letter-spacing:.06em;color:var(--muted);
  font-family:var(--serif-cn);margin-top:.15rem}
.menu{display:flex;align-items:center;gap:.2rem;list-style:none;margin:0;padding:0}
.menu>li{position:relative}
.menu>li>a{display:block;padding:.55rem .8rem;font-size:.82rem;letter-spacing:.04em;
  color:var(--ink-soft);border-radius:6px;transition:.2s}
.menu>li>a .cn{font-family:var(--serif-cn);font-weight:500;margin-right:.4em}
.menu>li>a:hover{color:var(--seal);background:rgba(166,129,46,.1)}
.menu>li.active>a{color:var(--seal)}
.menu>li.active>a::after{content:"";display:block;height:2px;background:var(--gold);
  margin-top:3px;border-radius:2px}
.has-sub>a::after{content:"⌄";margin-left:.35em;color:var(--gold);font-size:.9em}
.sub{position:absolute;top:100%;left:0;min-width:190px;background:var(--white);
  border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);
  padding:.35rem;opacity:0;visibility:hidden;transform:translateY(6px);transition:.18s;list-style:none;margin:.4rem 0 0}
.has-sub:hover .sub{opacity:1;visibility:visible;transform:translateY(0)}
.sub a{display:block;padding:.5rem .7rem;font-size:.8rem;border-radius:6px;color:var(--ink-soft)}
.sub a .cn{font-family:var(--serif-cn);margin-right:.4em}
.sub a:hover{background:var(--paper-2);color:var(--seal)}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:6px;
  padding:.4rem .55rem;cursor:pointer;color:var(--ink)}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:88vh;display:grid;place-items:center;overflow:hidden;
  background:#12100c}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.55;filter:saturate(1.05)}
.hero::after{content:"";position:absolute;inset:0;
  background:radial-gradient(120% 90% at 50% 20%,transparent,rgba(10,8,5,.75))}
.hero-inner{position:relative;z-index:2;text-align:center;color:#f7efdd;padding:6rem 1.4rem;max-width:900px}
.hero .kicker{font-size:.7rem;letter-spacing:.5em;text-transform:uppercase;color:var(--gold-soft)}
.hero h1{font-family:var(--serif-latin);font-weight:600;font-size:clamp(2.6rem,7vw,5.4rem);
  line-height:1.02;margin:.5rem 0 .2rem;letter-spacing:.02em}
.hero .cn-title{font-family:var(--serif-cn);font-size:clamp(1.1rem,3.4vw,1.9rem);
  letter-spacing:.28em;color:#efe3c6;margin-bottom:1.4rem}
.hero .yr{font-family:var(--serif-latin);font-size:1.1rem;letter-spacing:.5em;color:#e9dcbb}
.hero .cta{margin-top:2.2rem;display:inline-flex;gap:.9rem;flex-wrap:wrap;justify-content:center}
.btn{display:inline-block;padding:.72rem 1.5rem;border-radius:999px;font-size:.8rem;
  letter-spacing:.12em;text-transform:uppercase;transition:.2s;border:1px solid transparent;cursor:pointer}
.btn.gold{background:var(--gold);color:#1c1a17}
.btn.gold:hover{background:var(--gold-soft)}
.btn.ghost{border-color:rgba(233,220,187,.5);color:#f0e6cd}
.btn.ghost:hover{background:rgba(233,220,187,.14)}
.hero .upcoming{margin:2rem auto 0;max-width:560px;padding:1rem 1.3rem;border-radius:12px;
  background:rgba(20,16,10,.42);border:1px solid rgba(201,162,75,.45);backdrop-filter:blur(2px)}
.hero .upcoming .tag{font-size:.62rem;letter-spacing:.32em;text-transform:uppercase;color:var(--gold-soft)}
.hero .upcoming b{display:block;font-family:var(--serif-latin);font-size:1.5rem;letter-spacing:.03em;
  color:#f7efdd;margin:.25rem 0 .1rem}
.hero .upcoming .sub{font-size:.85rem;color:#e0d5ba}

/* ---------- Page header ---------- */
.page-head{max-width:var(--maxw);margin:0 auto;padding:4rem 1.4rem 1.2rem;text-align:center}
.page-head .cn{font-family:var(--serif-cn);font-size:clamp(1.8rem,5vw,2.8rem);font-weight:600;letter-spacing:.16em}
.page-head .en{font-family:var(--serif-latin);font-size:clamp(1.1rem,3vw,1.6rem);color:var(--gold);
  letter-spacing:.34em;text-transform:uppercase;margin-top:.2rem}
.page-head p.lede{max-width:720px;margin:1.3rem auto 0;color:var(--muted);font-size:1.02rem}
.rule{width:64px;height:2px;background:var(--gold);margin:1.4rem auto 0;border:0}

.section{max-width:var(--maxw);margin:0 auto;padding:2.2rem 1.4rem 3rem}
.section-title{display:flex;align-items:baseline;gap:.9rem;margin:2.6rem 0 1.4rem;
  padding-bottom:.6rem;border-bottom:1px solid var(--line)}
.section-title .cn{font-family:var(--serif-cn);font-size:1.5rem;font-weight:600;letter-spacing:.1em}
.section-title .en{font-family:var(--serif-latin);color:var(--gold);letter-spacing:.24em;text-transform:uppercase;font-size:.95rem}
.section-title .count{margin-left:auto;font-size:.75rem;color:var(--muted);letter-spacing:.18em}

/* ---------- Foreword / reading ---------- */
.reader{max-width:820px;margin:0 auto;padding:1rem 1.4rem 4rem}
.reader .col-cn{font-family:var(--serif-cn);font-size:1.08rem;line-height:2.05;color:var(--ink-soft)}
.reader .col-cn p{margin:0 0 1.1rem;text-indent:2em}
.reader .col-cn p.center{text-indent:0;text-align:center;font-size:1.25rem;color:var(--seal);letter-spacing:.1em}
.reader .divider{display:flex;align-items:center;gap:1rem;margin:2.6rem 0;color:var(--gold);
  font-family:var(--serif-latin);letter-spacing:.3em;text-transform:uppercase;font-size:.8rem}
.reader .divider::before,.reader .divider::after{content:"";flex:1;height:1px;background:var(--line)}
.reader .col-en{font-family:var(--serif-latin);font-size:1.28rem;line-height:1.72;color:var(--ink-soft)}
.reader .col-en p{margin:0 0 1rem}
.sign{margin-top:2.4rem;text-align:right}
.sign .n{font-family:var(--serif-cn);font-size:1.3rem;color:var(--ink)}
.sign .ne{font-family:var(--serif-latin);font-size:1.15rem;color:var(--gold)}
.sign .t{font-size:.82rem;color:var(--muted)}

/* ---------- Galleries ---------- */
.grid{display:grid;gap:1.5rem 1.4rem;
  grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
.grid.wide{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.card{background:var(--white);border:1px solid var(--line);border-radius:10px;overflow:hidden;
  box-shadow:0 8px 24px -18px rgba(28,26,23,.5);transition:.25s;cursor:pointer;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--gold-soft)}
.card .thumb{aspect-ratio:1077/1337;overflow:hidden;background:var(--paper-2)}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:.4s}
.card:hover .thumb img{transform:scale(1.04)}
.card .meta{padding:.7rem .8rem .85rem}
.card .meta .en{font-family:var(--serif-latin);font-size:1.08rem;font-weight:600;line-height:1.2}
.card .meta .cn{font-family:var(--serif-cn);font-size:.86rem;color:var(--ink-soft)}
.card .meta .region{margin-top:.35rem;font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--gold)}
.grp{margin-top:1.4rem}

/* ---------- Forum list ---------- */
.articles{display:grid;gap:1.1rem;grid-template-columns:repeat(auto-fill,minmax(340px,1fr))}
.article{display:flex;gap:1rem;background:var(--white);border:1px solid var(--line);
  border-radius:10px;overflow:hidden;transition:.25s;cursor:pointer}
.article:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--gold-soft)}
.article.static{cursor:default}
.article.static:hover{transform:none;box-shadow:none;border-color:var(--line)}
.article .thumb{flex:0 0 108px;background:var(--paper-2)}
.article .thumb img{width:100%;height:100%;object-fit:cover}
.article .body{padding:.9rem 1rem;display:flex;flex-direction:column;justify-content:center}
.article .num{font-family:var(--serif-latin);color:var(--gold);font-size:.9rem;letter-spacing:.2em}
.article h3{margin:.2rem 0 .1rem;font-family:var(--serif-cn);font-size:1.02rem;font-weight:600;line-height:1.4}
.article .te{font-family:var(--serif-latin);font-size:.92rem;color:var(--muted);line-height:1.3}
.article .au{margin-top:.5rem;font-size:.78rem;color:var(--ink-soft)}
.article .au b{font-family:var(--serif-cn)}

/* ---------- Activities list ---------- */
.acts{list-style:none;margin:0;padding:0;display:grid;gap:1rem;
  grid-template-columns:repeat(auto-fill,minmax(320px,1fr))}
.acts li{background:var(--white);border:1px solid var(--line);border-left:3px solid var(--gold);
  border-radius:10px;padding:1rem 1.2rem;color:var(--ink-soft);font-size:.9rem;line-height:1.6}
.acts li b{display:block;font-family:var(--serif-cn);font-weight:600;font-size:1.02rem;
  color:var(--ink);margin-bottom:.25rem}

/* ---------- Intro band ---------- */
.band{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.band .section{padding-top:3rem;padding-bottom:3rem}
.two{display:grid;gap:2.4rem;grid-template-columns:1.1fr 1fr;align-items:center}
.two .fig{border-radius:12px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line)}
.prose h2{font-family:var(--serif-cn);font-size:1.7rem;letter-spacing:.08em;margin:0 0 .2rem}
.prose h2 small{display:block;font-family:var(--serif-latin);color:var(--gold);
  font-size:.95rem;letter-spacing:.28em;text-transform:uppercase;font-weight:600;margin-top:.3rem}
.prose p{color:var(--ink-soft)}
.prose .lead{font-family:var(--serif-latin);font-size:1.35rem;line-height:1.5;color:var(--ink)}
.pill{display:inline-block;font-family:var(--serif-cn);font-size:.9rem;background:var(--white);
  border:1px solid var(--line);border-radius:999px;padding:.3rem .9rem;margin:.25rem .3rem 0}

/* ---------- Name lists (messages / congratulatory) ---------- */
.namelist{display:grid;gap:.6rem;grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.name{background:var(--white);border:1px solid var(--line);border-radius:8px;padding:.7rem .9rem}
.name .cn{font-family:var(--serif-cn);font-size:1.02rem}
.name .en{font-family:var(--serif-latin);color:var(--muted);font-size:.9rem}
.name .role{font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gold);margin-top:.2rem}

/* ---------- Home feature cards ---------- */
.features{display:grid;gap:1.4rem;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.feat{position:relative;border-radius:12px;overflow:hidden;min-height:300px;display:flex;
  align-items:flex-end;color:#f6ecd4;box-shadow:var(--shadow);border:1px solid var(--line)}
.feat img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:.5s}
.feat:hover img{transform:scale(1.05)}
.feat::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,8,5,.05),rgba(10,8,5,.82))}
.feat .fc{position:relative;z-index:2;padding:1.3rem}
.feat .fc .cn{font-family:var(--serif-cn);font-size:1.5rem;font-weight:600;letter-spacing:.08em}
.feat .fc .en{font-family:var(--serif-latin);letter-spacing:.24em;text-transform:uppercase;font-size:.8rem;color:var(--gold-soft)}
.feat .fc p{margin:.4rem 0 0;font-size:.85rem;color:#e6dcc4}

/* ---------- Home section links (text cards) ---------- */
.linkcards{display:grid;gap:1.2rem;grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.linkcard{display:block;background:var(--white);border:1px solid var(--line);border-radius:12px;
  padding:1.5rem 1.6rem;box-shadow:0 8px 24px -18px rgba(28,26,23,.5);transition:.25s}
.linkcard:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--gold-soft)}
.linkcard .en{font-family:var(--serif-latin);letter-spacing:.22em;text-transform:uppercase;
  font-size:.78rem;color:var(--gold)}
.linkcard .cn{font-family:var(--serif-cn);font-size:1.5rem;font-weight:600;margin:.15rem 0 .5rem}
.linkcard p{margin:0;font-size:.86rem;color:var(--muted);line-height:1.6}

/* ---------- Stats ---------- */
.stats{display:grid;gap:1.4rem;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));text-align:center;margin-top:1rem}
.stat .num{font-family:var(--serif-latin);font-size:2.8rem;color:var(--seal);line-height:1}
.stat .lab{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin-top:.3rem}
.stat .lab .cn{font-family:var(--serif-cn);display:block;letter-spacing:.1em;color:var(--ink-soft);text-transform:none;font-size:.95rem}

/* ---------- Tabs ---------- */
.tabs{display:flex;gap:.5rem;justify-content:center;flex-wrap:wrap;margin:0 0 1.8rem}
.tab{padding:.55rem 1.3rem;border:1px solid var(--line);border-radius:999px;background:var(--white);
  cursor:pointer;font-size:.82rem;letter-spacing:.06em;transition:.2s;color:var(--ink-soft)}
.tab .cn{font-family:var(--serif-cn);margin-right:.4em}
.tab:hover{border-color:var(--gold-soft)}
.tab.active{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.tabpane,[data-pane]{display:none}
.tabpane.active,[data-pane].active{display:block;animation:fade .4s ease}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---------- Lightbox ---------- */
.lb{position:fixed;inset:0;z-index:100;background:rgba(14,11,7,.94);display:none;
  align-items:center;justify-content:center}
.lb.open{display:flex}
.lb img{max-width:92vw;max-height:86vh;object-fit:contain;box-shadow:0 30px 80px -20px #000;border-radius:2px}
.lb .cap{position:absolute;bottom:2.2vh;left:0;right:0;text-align:center;color:#f2e8cf;padding:0 1rem}
.lb .cap .en{font-family:var(--serif-latin);font-size:1.25rem}
.lb .cap .cn{font-family:var(--serif-cn);font-size:.95rem;color:#d9cba7}
.lb .cap .region{font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold-soft);margin-top:.2rem}
.lb button{position:absolute;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.25);
  color:#f2e8cf;width:52px;height:52px;border-radius:50%;font-size:1.4rem;cursor:pointer;transition:.2s;display:grid;place-items:center}
.lb button:hover{background:rgba(255,255,255,.18)}
.lb .close{top:3vh;right:3vw;width:46px;height:46px}
.lb .prev{left:2vw;top:50%;transform:translateY(-50%)}
.lb .next{right:2vw;top:50%;transform:translateY(-50%)}

/* ---------- Footer ---------- */
.foot{background:#17140f;color:#d8ccb0;margin-top:3rem}
.foot-inner{max-width:var(--maxw);margin:0 auto;padding:3rem 1.4rem;
  display:grid;gap:2rem;grid-template-columns:1.4fr 1fr 1fr}
.foot h4{font-family:var(--serif-cn);letter-spacing:.1em;margin:0 0 .3rem;color:#f0e6cd}
.foot h4 small{display:block;font-family:var(--serif-latin);letter-spacing:.24em;
  text-transform:uppercase;color:var(--gold-soft);font-size:.75rem;margin-top:.2rem}
.foot p,.foot a{color:#c3b799;font-size:.86rem;line-height:1.9}
.foot a:hover{color:var(--gold-soft)}
.foot .links{list-style:none;margin:0;padding:0}
.foot-bottom{border-top:1px solid #2a2519;text-align:center;padding:1.1rem;font-size:.74rem;color:#8f866f;letter-spacing:.08em}

/* ---------- Responsive ---------- */
@media (max-width:860px){
  .two{grid-template-columns:1fr}
  .foot-inner{grid-template-columns:1fr}
  .menu{position:fixed;inset:64px 0 auto 0;flex-direction:column;align-items:stretch;
    background:var(--paper);border-bottom:1px solid var(--line);padding:.6rem 1rem 1.1rem;
    gap:.1rem;display:none;box-shadow:var(--shadow)}
  .menu.show{display:flex}
  .menu>li>a{padding:.75rem .5rem;font-size:.95rem}
  .sub{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;
    border:0;border-left:2px solid var(--line);margin:.1rem 0 .4rem 1rem;padding:0}
  .nav-toggle{display:block}
}