/* 牛来博物馆 · 漆与光 */
:root{
  --bg:#f4ede0; --bg2:#ece2cf; --ink:#2e2a22; --ink2:#6b6353;
  --line:#d8cbb2; --card:#faf6ec; --accent:#c46a2b; --accent2:#8a5a2b;
  --gold:#b08a3e; --shadow:0 24px 60px -24px rgba(60,40,10,.35);
}
body.night{
  --bg:#191713; --bg2:#211d17; --ink:#e8dfc9; --ink2:#a89d85;
  --line:#3a3428; --card:#24201a; --accent:#e0954f; --accent2:#c4a05e;
  --gold:#cfa856; --shadow:0 24px 60px -24px rgba(0,0,0,.7);
}
*{box-sizing:border-box; margin:0; padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--ink);
  font-family:'Jost','Noto Serif SC',sans-serif;
  overflow-x:hidden; transition:background .5s ease, color .5s ease;
}
button{font:inherit; color:inherit; background:none; border:none; cursor:pointer}
img{display:block; max-width:100%}
em,i{font-style:normal}

/* ── 入口帷幕 ── */
.veil{position:fixed; inset:0; z-index:60; display:flex; align-items:center; justify-content:center; overflow:hidden; transition:opacity .85s ease, visibility .85s}
.veil.gone{opacity:0; visibility:hidden}
.veil-poster{position:absolute; inset:0; width:100%; height:100%; object-fit:cover; transform:scale(1.04)}
.veil-wash{position:absolute; inset:0; background:linear-gradient(180deg, rgba(20,14,6,.25), rgba(20,14,6,.62))}
.veil-content{position:relative; text-align:center; color:#f6efdd; padding:0 20px}
.veil-kicker{font-size:13px; letter-spacing:.55em; opacity:.85; text-indent:.55em}
.veil-title{font-family:'Noto Serif SC',serif; font-weight:700; font-size:clamp(44px,9vw,96px); letter-spacing:.14em; text-indent:.14em; margin:14px 0 10px; text-shadow:0 4px 30px rgba(0,0,0,.45)}
.veil-sub{font-family:'Noto Serif SC',serif; font-size:clamp(14px,2.2vw,18px); letter-spacing:.28em; text-indent:.28em; opacity:.92; margin-bottom:38px}
.veil-enter{display:inline-flex; align-items:center; gap:10px; padding:14px 44px; border:1px solid rgba(246,239,221,.65); color:#f6efdd; font-size:15px; letter-spacing:.5em; text-indent:.5em; transition:.35s; backdrop-filter:blur(3px); background:rgba(20,14,6,.18)}
.veil-enter:hover{background:#f6efdd; color:#3a2c16}
.veil-enter svg{width:18px; height:18px; stroke:currentColor; stroke-width:1.6; fill:none; margin-left:-6px}

/* ── 顶栏 ── */
#hdr{position:fixed; top:0; left:0; right:0; z-index:40; display:flex; align-items:center; gap:6px; padding:14px 26px; background:linear-gradient(180deg, rgba(20,16,10,.28), transparent); opacity:0; pointer-events:none; transition:opacity .6s ease .15s}
body.entered #hdr{opacity:1; pointer-events:auto}
body.scrolled #hdr{background:linear-gradient(180deg, var(--bg) 62%, transparent); backdrop-filter:blur(6px)}
.hdr-btn,.menu-trigger{width:40px; height:40px; display:grid; place-items:center; border:1px solid transparent; transition:.3s}
.hdr-btn:hover,.menu-trigger:hover{border-color:var(--line)}
.hdr-btn svg{width:20px; height:20px; stroke:var(--ink); stroke-width:1.5; fill:none}
#hdr{color:var(--ink)}
.icon-sun{display:none}
body.night .icon-sun{display:block} body.night .icon-moon{display:none}
.menu-trigger{flex-direction:column; gap:5px}
.menu-trigger span{width:18px; height:1.5px; background:var(--ink); transition:.3s}
.header-word{font-size:12px; letter-spacing:.3em; margin-right:6px; opacity:.75}
.brand-lockup{margin-left:auto; text-align:right; text-decoration:none; color:var(--ink); line-height:1.05}
.brand-lockup strong{display:block; font-family:'Cormorant Garamond',serif; font-size:17px; letter-spacing:.34em}
.brand-lockup span{font-size:11px; letter-spacing:.42em; opacity:.7}
#hdr nav{display:flex; gap:22px; margin:0 34px}
#hdr nav a{text-decoration:none; color:var(--ink2); font-size:13.5px; letter-spacing:.22em; transition:.3s; position:relative}
#hdr nav a:hover{color:var(--ink)}
#hdr nav a::after{content:""; position:absolute; left:0; bottom:-6px; width:0; height:1px; background:var(--accent); transition:.3s}
#hdr nav a:hover::after{width:100%}
body.night #hdr{background:linear-gradient(180deg, rgba(10,8,4,.5), transparent)}

/* ── 抽屉 ── */
.drawer{position:fixed; top:0; left:0; bottom:0; width:min(380px,86vw); z-index:50; background:var(--card); transform:translateX(-102%); transition:transform .5s cubic-bezier(.7,0,.3,1); padding:30px 34px; display:flex; flex-direction:column; box-shadow:var(--shadow)}
.drawer.open{transform:none}
.drawer-head{display:flex; justify-content:space-between; align-items:flex-start}
.drawer-head span{font-size:11px; letter-spacing:.4em; color:var(--accent2)}
.drawer-head h2{font-family:'Noto Serif SC',serif; font-size:30px; letter-spacing:.2em; margin-top:8px}
.drawer-close{width:38px; height:38px; display:grid; place-items:center}
.drawer-close svg{width:20px; height:20px; stroke:var(--ink); stroke-width:1.5; fill:none}
.drawer-rule{height:1px; background:var(--line); margin:22px 0}
.drawer-nav{display:flex; flex-direction:column; gap:4px; flex:1}
.drawer-nav button{display:flex; flex-direction:column; gap:5px; padding:14px 10px; text-align:left; border-bottom:1px solid var(--line); transition:.3s}
.drawer-nav button:hover{padding-left:18px; color:var(--accent)}
.drawer-nav b{font-family:'Noto Serif SC',serif; font-size:17px; letter-spacing:.28em}
.drawer-nav small{font-size:12px; color:var(--ink2); letter-spacing:.08em}
.drawer-foot{display:flex; gap:10px; padding-top:20px}
.drawer-foot button{flex:1; padding:10px; border:1px solid var(--line); font-size:13px; letter-spacing:.2em; transition:.3s}
.drawer-foot button:hover{background:var(--ink); color:var(--bg)}

/* ── 通用段 ── */
main section{padding:120px 6vw}
.sec-head{text-align:center; margin-bottom:54px}
.sec-no{font-family:'Cormorant Garamond',serif; font-size:15px; letter-spacing:.5em; color:var(--gold)}
.sec-head h2{font-family:'Noto Serif SC',serif; font-size:clamp(28px,4.6vw,44px); letter-spacing:.3em; text-indent:.3em; margin:12px 0 14px}
.sec-head p{color:var(--ink2); font-size:14.5px; letter-spacing:.14em}
.reveal{opacity:0; transform:translateY(26px); transition:opacity .8s ease, transform .8s ease}
.reveal.in{opacity:1; transform:none}

/* ── 序言 ── */
.intro{min-height:88vh; display:flex; align-items:center; background:linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%)}
.intro-inner{max-width:860px; margin:0 auto; text-align:center}
.intro-kicker{font-size:13px; letter-spacing:.6em; text-indent:.6em; color:var(--gold); margin-bottom:22px}
.intro-title{font-family:'Noto Serif SC',serif; font-size:clamp(34px,6vw,64px); letter-spacing:.22em; text-indent:.22em; margin-bottom:30px}
.intro-lead{font-family:'Noto Serif SC',serif; font-size:16.5px; line-height:2.15; color:var(--ink2); margin-bottom:16px; text-align:justify; text-align-last:center}
.intro-lead.dim{opacity:.8; font-size:15px}
.intro-stats{display:flex; justify-content:center; gap:58px; margin-top:52px}
.intro-stats b{display:block; font-family:'Cormorant Garamond',serif; font-size:44px; color:var(--accent)}
.intro-stats span{font-size:12.5px; letter-spacing:.3em; color:var(--ink2)}

/* ── 筛选 ── */
.filters{display:flex; justify-content:center; gap:12px; margin-bottom:44px; flex-wrap:wrap}
.chip{padding:9px 26px; border:1px solid var(--line); font-size:13.5px; letter-spacing:.3em; text-indent:.3em; color:var(--ink2); transition:.3s}
.chip.on,.chip:hover{border-color:var(--ink); color:var(--ink); background:var(--card)}
.chip-cn{border-color:#9e3d3d; color:#9e3d3d}
.chip-cn.on,.chip-cn:hover{background:#9e3d3d; color:#f6efdd; border-color:#9e3d3d}
.gallery.cn-hall .piece-frame{background:#f3e7d2; padding:14px 12px 20px}
.gallery.cn-hall .piece-frame::before{border-color:#c9b58f}
.gallery.cn-hall .piece em{color:#7a2e2e}

/* ── 长廊 ── */
.gallery{columns:4 240px; column-gap:26px}
.piece{break-inside:avoid; margin:0 0 26px; cursor:pointer}
.piece-frame{position:relative; background:var(--card); padding:10px; box-shadow:var(--shadow); transition:transform .45s ease, box-shadow .45s}
.piece-frame::before{content:""; position:absolute; inset:0; border:1px solid var(--line); pointer-events:none}
.piece:hover .piece-frame{transform:translateY(-6px)}
.piece-frame img{width:100%; transition:filter .4s}
.piece-veil{position:absolute; inset:10px; display:grid; place-items:center; background:rgba(30,22,10,.42); opacity:0; transition:.4s}
.piece-veil span{color:#f6efdd; font-size:30px; font-weight:200}
.piece:hover .piece-veil{opacity:1}
.piece figcaption{padding:12px 4px 0}
.piece em{display:block; font-family:'Noto Serif SC',serif; font-size:15.5px; letter-spacing:.14em}
.piece figcaption span{font-size:12px; color:var(--ink2); letter-spacing:.08em}

/* ── 灯箱 ── */
.lightbox{position:fixed; inset:0; z-index:70; background:rgba(16,12,6,.9); display:flex; align-items:center; justify-content:center; gap:26px; padding:5vh 5vw; opacity:0; visibility:hidden; transition:.45s}
.lightbox.open{opacity:1; visibility:visible}
.lb-body{display:flex; gap:44px; align-items:center; max-width:1240px; max-height:88vh}
.lb-body img{max-height:80vh; max-width:min(56vw,760px); width:auto; box-shadow:0 30px 80px rgba(0,0,0,.6)}
.lb-body figcaption{max-width:330px; color:#e8dfc9}
.lb-body em{display:block; font-family:'Noto Serif SC',serif; font-size:26px; letter-spacing:.18em; margin-bottom:8px}
.lb-body figcaption>span{font-size:13px; letter-spacing:.16em; color:#bfb298; display:block; margin-bottom:20px}
.lb-body p{font-family:'Noto Serif SC',serif; font-size:14.5px; line-height:2.05; color:#d8cdb4}
.lb-close{position:absolute; top:26px; right:30px; width:44px; height:44px; display:grid; place-items:center; border:1px solid rgba(232,223,201,.3)}
.lb-close svg{width:20px; height:20px; stroke:#e8dfc9; stroke-width:1.5; fill:none}
.lb-nav{width:48px; height:48px; border:1px solid rgba(232,223,201,.3); display:grid; place-items:center; flex:none; transition:.3s}
.lb-nav:hover{background:rgba(232,223,201,.14)}
.lb-nav svg{width:20px; height:20px; stroke:#e8dfc9; stroke-width:1.5; fill:none}

/* ── 中国馆 ── */
.china-anchor{padding:110px 6vw 70px; background:linear-gradient(180deg, var(--bg) 0%, #efe3cc 100%)}
body.night .china-anchor{background:linear-gradient(180deg, var(--bg) 0%, #221c14 100%)}
.china-anchor .sec-no{color:#9e3d3d}
.china-gate{text-align:center; margin-top:8px}
.china-gate .btn-line{border-color:#9e3d3d; color:#9e3d3d; letter-spacing:.5em; text-indent:.5em; padding:14px 46px}
.china-gate .btn-line:hover{background:#9e3d3d; color:#f6efdd}
.china-note{margin-top:16px; font-size:12.5px; letter-spacing:.16em; color:var(--ink2)}

/* ── 梦的回廊 ── */
.dream-sec{background:linear-gradient(180deg,var(--bg2),var(--bg))}
.dream-strip{display:flex; gap:26px; overflow-x:auto; padding:10px 6vw 30px; scroll-snap-type:x mandatory; scrollbar-width:none}
.dream-strip::-webkit-scrollbar{display:none}
.dream-card{flex:0 0 min(760px,82vw); scroll-snap-align:center; margin:0}
.dream-card img{width:100%; box-shadow:var(--shadow)}
.dream-card figcaption{padding:16px 6px 0; display:flex; flex-direction:column; gap:7px}
.dream-card b{font-family:'Noto Serif SC',serif; font-size:18px; letter-spacing:.22em; color:var(--accent)}
.dream-card span{font-family:'Noto Serif SC',serif; font-size:14.5px; line-height:1.95; color:var(--ink2)}
.dream-dots{display:flex; justify-content:center; gap:10px; padding-bottom:10px}
.dream-dots i{width:8px; height:8px; border:1px solid var(--ink2); transform:rotate(45deg); cursor:pointer; transition:.3s}
.dream-dots i.on{background:var(--accent); border-color:var(--accent)}

/* ── 鉴定所 ── */
.quiz-sec{background:var(--bg)}
.quiz-stage{display:flex; gap:52px; align-items:center; max-width:1150px; margin:0 auto}
.quiz-frame{flex:1.35; background:var(--card); padding:14px; box-shadow:var(--shadow); position:relative}
.quiz-frame::before{content:""; position:absolute; inset:0; border:1px solid var(--line)}
.quiz-frame img{width:100%}
.quiz-side{flex:1}
.quiz-q{font-family:'Noto Serif SC',serif; font-size:24px; letter-spacing:.2em; margin-bottom:14px}
.quiz-hint{color:var(--ink2); font-size:14.5px; line-height:1.9; min-height:52px; margin-bottom:22px}
.quiz-progress{display:flex; align-items:center; gap:14px; margin-bottom:20px}
.quiz-progress span{font-size:13px; letter-spacing:.2em; color:var(--ink2)}
.quiz-bar{flex:1; height:2px; background:var(--line)}
.quiz-bar i{display:block; height:100%; background:var(--accent); transition:.5s}
.quiz-actions{display:flex; flex-wrap:wrap; gap:12px; align-items:center}
.btn-line{padding:12px 30px; border:1px solid var(--ink); font-size:14px; letter-spacing:.28em; text-indent:.28em; transition:.3s}
.btn-line:hover:not(:disabled){background:var(--ink); color:var(--bg)}
.btn-line:disabled{opacity:.35; cursor:default}
.btn-line.ghost{border-color:var(--line); color:var(--ink2)}
.btn-line.real:hover{background:#2e6b46; border-color:#2e6b46; color:#f4ede0}
.btn-line.fake:hover{background:#a03a2e; border-color:#a03a2e; color:#f4ede0}
.quiz-note{width:100%; font-family:'Noto Serif SC',serif; font-size:14.5px; letter-spacing:.06em; line-height:1.9; padding:12px 16px; margin-top:6px}
.quiz-note.good{background:rgba(46,107,70,.12); border-left:2px solid #2e6b46}
.quiz-note.bad{background:rgba(160,58,46,.1); border-left:2px solid #a03a2e}
.quiz-note .swap{margin-left:14px; padding:4px 12px; font-size:12px; letter-spacing:.16em; border:1px solid var(--line); color:var(--ink2)}
.quiz-note .swap:hover{color:var(--ink); border-color:var(--ink)}
.quiz-verdict{max-width:560px; margin:34px auto 0; text-align:center; font-family:'Noto Serif SC',serif; color:var(--accent); letter-spacing:.14em}

/* ── 群像 ── */
.cast-sec{background:linear-gradient(180deg,var(--bg2),var(--bg))}
.cast-grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(230px,1fr)); gap:26px}
.cast-card{background:var(--card); box-shadow:var(--shadow); transition:transform .4s}
.cast-card:hover{transform:translateY(-6px)}
.cast-card img{width:100%; aspect-ratio:3/4; object-fit:cover}
.cast-empty{aspect-ratio:3/4; display:grid; place-items:center; background:repeating-linear-gradient(45deg,var(--bg2),var(--bg2) 12px,var(--card) 12px,var(--card) 24px)}
.cast-empty span{font-family:'Cormorant Garamond',serif; font-size:64px; color:var(--line)}
.cast-empty small{font-size:11px; letter-spacing:.3em; color:var(--ink2)}
.cast-card figcaption{padding:16px 18px 20px; display:flex; flex-direction:column; gap:7px}
.cast-card b{font-family:'Noto Serif SC',serif; font-size:18px; letter-spacing:.22em}
.cast-card i{font-size:12px; letter-spacing:.2em; color:var(--accent)}
.cast-card span{font-size:13px; line-height:1.85; color:var(--ink2)}

/* ── 造访 ── */
.visit-sec{background:var(--bg); text-align:center}
.visit-inner{max-width:760px; margin:0 auto}
.visit-inner h2{font-family:'Noto Serif SC',serif; font-size:clamp(26px,4vw,40px); letter-spacing:.4em; text-indent:.4em; margin:12px 0 26px}
.visit-line{font-family:'Noto Serif SC',serif; font-size:16px; line-height:2.1; color:var(--ink2); margin-bottom:18px}
.visit-credit{font-size:12.5px; letter-spacing:.18em; color:var(--gold); margin-bottom:40px}

/* ── 响应式 ── */
@media (max-width:900px){
  #hdr nav{display:none}
  main section{padding:90px 6vw}
  .quiz-stage{flex-direction:column; gap:30px}
  .lb-body{flex-direction:column; gap:18px; overflow-y:auto}
  .lb-body img{max-width:88vw; max-height:52vh}
  .lb-body figcaption{max-width:88vw}
  .intro-stats{gap:30px}
}