/* 私人舊藏 · 書畫館 — 手機/電腦分版自適應 */
:root{
  --ink:#16130e; --ink2:#221d15;
  --paper:#f4eee1; --paper2:#ece4d2;
  --seal:#a33327; --gold:#9a7b4f;
  --muted:#8d8471; --line:#d9cdb4;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:"Noto Serif SC","Songti SC","STSong",serif;line-height:1.8;-webkit-font-smoothing:antialiased}
.wrap{max-width:1200px;margin:0 auto;padding:0 22px}
img{display:block;max-width:100%}
button{font-family:inherit}

/* ===== 頂欄 ===== */
.topbar{background:var(--ink);color:#b9ac93;font-size:12px;letter-spacing:3px;padding:9px 0}
.topbar .wrap{display:flex;justify-content:space-between}

/* ===== 首屏 ===== */
.hero{background:radial-gradient(1200px 500px at 50% -10%,#2a2318 0%,var(--ink) 60%);color:#e9e0cd;position:relative;overflow:hidden;padding:88px 0 70px;text-align:center}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(closest-side,transparent 60%,rgba(0,0,0,.35));pointer-events:none}
.hero-vert{position:absolute;right:5%;top:50%;transform:translateY(-50%);writing-mode:vertical-rl;font-size:15px;letter-spacing:14px;color:#5c5344;user-select:none}
.kicker{font-size:12px;letter-spacing:6px;color:var(--gold);margin-bottom:18px;font-family:Georgia,serif}
.hero h1{font-size:64px;font-weight:600;letter-spacing:26px;text-indent:26px;margin-bottom:20px}
.lede{color:#b9ac93;font-size:15.5px;letter-spacing:2px;line-height:2.1}
.stats{display:flex;gap:54px;justify-content:center;margin-top:38px}
.stats div{display:flex;flex-direction:column;align-items:center}
.stats b{font-size:34px;color:#e9e0cd;font-weight:600;font-family:Georgia,serif}
.stats b::after{content:"";display:block;width:26px;height:2px;background:var(--seal);margin:8px auto 6px}
.stats span{font-size:12px;letter-spacing:4px;color:#8d8471}

/* ===== 篩選 ===== */
.filters{display:flex;gap:9px;flex-wrap:wrap;justify-content:center;padding:34px 0 8px}
.filters button{border:1px solid var(--line);background:transparent;border-radius:2px;padding:7px 18px;font-size:13.5px;letter-spacing:2px;cursor:pointer;color:var(--ink);transition:all .2s}
.filters button.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.count{text-align:center;color:var(--muted);font-size:12.5px;letter-spacing:3px;padding:8px 0 20px}

/* ===== 作品網格（電腦） ===== */
body.desktop .grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:26px 22px;padding-bottom:20px}
body.desktop .card{background:#fbf8f0;border:1px solid var(--line);cursor:pointer;opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease,box-shadow .25s ease}
body.desktop .card.vis{opacity:1;transform:none}
body.desktop .card:hover{box-shadow:0 14px 34px rgba(22,19,14,.14)}
body.desktop .card .im{aspect-ratio:1/1;overflow:hidden;background:#e7ddc7}
body.desktop .card img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
body.desktop .card:hover img{transform:scale(1.045)}
body.desktop .card .tx{padding:13px 15px 15px;border-top:1px solid var(--line)}
body.desktop .card .no{font-size:11px;letter-spacing:3px;color:var(--seal);font-family:Georgia,serif;margin-bottom:4px}
body.desktop .card h3{font-size:16.5px;letter-spacing:1.5px;font-weight:600}
body.desktop .card .meta{font-size:12.5px;color:var(--muted);letter-spacing:1px;margin-top:3px}

/* ===== 作品流（手機） ===== */
body.mobile .wrap{padding:0 14px}
body.mobile .grid{display:flex;flex-direction:column;gap:26px;padding-bottom:26px}
body.mobile .card{background:#fbf8f0;border:1px solid var(--line);cursor:pointer;opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
body.mobile .card.vis{opacity:1;transform:none}
body.mobile .card .im{background:#e7ddc7}
body.mobile .card img{width:100%;height:auto;max-height:78vh;object-fit:contain;background:#14110b}
body.mobile .card .tx{padding:14px 16px 16px;display:flex;align-items:baseline;gap:10px;border-top:1px solid var(--line)}
body.mobile .card .no{font-size:11px;letter-spacing:2px;color:var(--seal);font-family:Georgia,serif;white-space:nowrap}
body.mobile .card h3{font-size:17px;letter-spacing:1px;font-weight:600;flex:1}
body.mobile .card .meta{font-size:12px;color:var(--muted);white-space:nowrap}
body.mobile .filters{position:sticky;top:0;z-index:20;background:var(--paper);flex-wrap:nowrap;overflow-x:auto;justify-content:flex-start;padding:12px 14px;margin:0 -14px;scrollbar-width:none}
body.mobile .filters::-webkit-scrollbar{display:none}
body.mobile .filters button{flex-shrink:0;padding:8px 16px;font-size:14px}

/* ===== 大圖（電腦） ===== */
body.desktop .lb{position:fixed;inset:0;background:rgba(14,12,8,.93);display:none;align-items:center;justify-content:center;z-index:60;padding:24px}
body.desktop .lb.show{display:flex}
body.desktop .lb-in{display:flex;max-width:min(1060px,94vw);max-height:90vh;background:var(--paper);overflow:hidden}
body.desktop .lb-in img{max-height:90vh;max-width:62vw;object-fit:contain;background:#0e0c08}
body.desktop .lb-tx{padding:38px 34px;min-width:280px;max-width:360px;overflow-y:auto}
body.desktop .lb .hint{display:none}

/* ===== 大圖（手機） ===== */
body.mobile .lb{position:fixed;inset:0;background:#0e0c08;display:none;z-index:60;overflow-y:auto}
body.mobile .lb.show{display:block}
body.mobile .lb-in{background:#0e0c08;min-height:100%}
body.mobile .lb-in img{width:100%;height:auto;max-height:70vh;object-fit:contain}
body.mobile .lb-tx{background:var(--paper);padding:20px 20px 40px;border-radius:14px 14px 0 0;margin-top:-14px;position:relative}
body.mobile .lb .nav{display:none}
body.mobile .lb .x{position:fixed;top:calc(10px + env(safe-area-inset-top));right:16px;background:rgba(20,17,13,.55);color:#fff;border:none;width:38px;height:38px;border-radius:50%;font-size:22px;z-index:61}

/* 大圖共用 */
.lb-tx .no{font-size:12px;letter-spacing:4px;color:var(--seal);font-family:Georgia,serif;margin-bottom:10px}
.lb-tx h2{font-size:25px;letter-spacing:3px;margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.lb-tx dl div{display:flex;gap:12px;padding:9px 0;border-bottom:1px dotted var(--line);font-size:14px}
.lb-tx dt{color:var(--muted);letter-spacing:2px;min-width:44px;flex-shrink:0}
.lb-tx dd{letter-spacing:1px}
.lb-tx .hint{margin-top:16px;font-size:12px;color:var(--muted);letter-spacing:2px;text-align:center}
body.desktop .lb .x{position:absolute;top:16px;right:24px;color:#e9e0cd;font-size:34px;cursor:pointer;background:none;border:none;line-height:1}
body.desktop .lb .nav{position:absolute;top:50%;transform:translateY(-50%);background:rgba(233,224,205,.12);color:#e9e0cd;border:1px solid rgba(233,224,205,.25);font-size:26px;width:48px;height:70px;cursor:pointer}
body.desktop .lb .nav:hover{background:rgba(233,224,205,.25)}
body.desktop .lb .prev{left:14px}body.desktop .lb .next{right:14px}

/* ===== 頁尾 ===== */
.foot{background:var(--ink);color:#8d8471;text-align:center;padding:34px 0 44px;font-size:12.5px;letter-spacing:2px;line-height:2.2;margin-top:40px}
.foot .brand{color:#b9ac93;margin-top:8px}

/* ===== 手機首屏微調 ===== */
body.mobile .hero{padding:56px 0 44px}
body.mobile .hero h1{font-size:44px;letter-spacing:18px;text-indent:18px}
body.mobile .hero-vert{display:none}
body.mobile .stats{gap:30px}
body.mobile .lede{font-size:14px;padding:0 8px}
body.mobile .topbar{font-size:11px}