:root{
  --bg:#05070d; --bg2:#0a0f1c; --ink:#e9ecf3; --mute:#9aa3b8; --dim:#5d667c;
  --sky:#f2c46d; --sea:#5fd0e6; --line:rgba(255,255,255,.12);
  --serif:"Cormorant Garamond",Georgia,serif; --sans:"Inter",system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font:300 17px/1.65 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:var(--sea)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3{font-family:var(--serif);font-weight:400;line-height:1.1}
h2{font-size:clamp(34px,5vw,58px);margin:.2em 0 .4em}
h3{font-size:30px}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.kicker{font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:var(--sky)}
.dark .kicker{color:var(--sea)}
.intro{max-width:720px;color:var(--mute);font-size:19px}
.intro.small{font-size:16px}
.note{color:var(--mute);font-size:15px;margin-top:18px;min-height:1.6em}
.sub-h{margin-top:72px;font-size:32px}
.mt{margin-top:110px}

/* header */
.top{position:fixed;inset:0 0 auto 0;z-index:50;display:flex;align-items:center;gap:24px;padding:14px 24px;background:linear-gradient(#05070dee,#05070d00)}
.brand{font-family:var(--serif);font-size:24px;color:var(--ink);text-decoration:none;margin-right:auto}
.top nav{display:flex;gap:22px}
.top nav a{color:var(--mute);text-decoration:none;font-size:14px;letter-spacing:.05em}
.top nav a:hover{color:var(--ink)}
.expo-btn{border:1px solid var(--line);border-radius:30px;padding:7px 16px;font-size:13px;color:var(--ink)}
.expo-btn:hover{border-color:var(--sky)}
@media(max-width:760px){.top nav a:not(.nav-expo){display:none}}
.nav-expo{color:var(--sky)!important;border:1px solid #f2c46d66;border-radius:30px;padding:4px 12px}

/* hero */
.hero{position:relative;height:100svh;min-height:560px;display:flex;overflow:hidden}
.hero-half{flex:1;background-size:cover;background-position:center;transform:scale(1.08);animation:drift 30s ease-in-out infinite alternate}
.hero-half.sea{animation-delay:-15s}
@keyframes drift{to{transform:scale(1.18) translateY(-2%)}}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at center,#05070d88 0%,#05070d77 50%,#05070dee 100%)}
.hero-text{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:24px}
.hero h1{font-size:clamp(64px,13vw,170px);letter-spacing:-.01em;margin:.05em 0 .15em}
.hero .lead{max-width:640px;font-size:clamp(18px,2.2vw,23px);color:#cfd5e2}
.scroll-cue{margin-top:40px;color:var(--ink);text-decoration:none;font-size:14px;letter-spacing:.15em;text-transform:uppercase;opacity:.75}
@media(max-width:700px){.hero{flex-direction:column}}

.block{padding:120px 0}
.block.dark{background:var(--bg2)}

/* stats */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;margin-top:44px}
.stat{border:1px solid var(--line);border-radius:16px;padding:26px 24px;background:#ffffff05}
.stat .num{font-family:var(--serif);font-size:clamp(24px,2.4vw,32px);color:var(--sky);line-height:1.2;font-variant-numeric:tabular-nums}
.stat .u{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink);margin:10px 0 12px}
.stat p{font-size:15px;color:var(--mute)}

/* ladder */
.ladder{margin-top:28px;display:flex;flex-direction:column;gap:10px}
.rung{display:grid;grid-template-columns:minmax(150px,260px) 1fr 90px;align-items:center;gap:14px;cursor:pointer}
.rung .lab{font-size:15px;color:var(--mute);text-align:right}
.rung .bar{height:22px;border-radius:4px;background:linear-gradient(90deg,#5fd0e655,#f2c46d);width:0;transition:width 1.4s cubic-bezier(.2,.8,.2,1)}
.rung .exp{font-family:var(--serif);font-size:20px;color:var(--ink)}
.rung.on .lab{color:var(--ink)}
@media(max-width:620px){.rung{grid-template-columns:1fr 70px}.rung .lab{grid-column:1/-1;text-align:left;margin-bottom:-6px}}

/* light */
.light{display:grid;grid-template-columns:1.3fr 1fr;gap:40px;margin-top:44px;align-items:center}
.light-view{aspect-ratio:4/3;border-radius:16px;overflow:hidden;background:#000}
.light-view img{width:100%;height:100%;object-fit:cover;transition:opacity .5s}
.light-type{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--sea)}
.light-info h3{font-size:clamp(28px,3vw,40px);margin:.2em 0 .5em}
.light-big{font-family:var(--serif);font-size:clamp(46px,6vw,76px);line-height:1;color:var(--sky)}
.light-big small{display:block;font-family:var(--sans);font-size:15px;color:var(--mute);margin-top:8px}
.light-when{font-size:19px;margin:22px 0}
.light-bar{height:6px;border-radius:3px;background:#ffffff14;overflow:hidden}
.light-bar div{height:100%;width:0;background:var(--sky);transition:width 1s}
.light-scale{font-size:13px;color:var(--dim);margin-top:8px}
.thumbs{display:flex;gap:10px;overflow-x:auto;margin-top:30px;padding-bottom:10px;scrollbar-width:thin}
.thumbs button{flex:0 0 auto;width:112px;border-radius:10px;overflow:hidden;opacity:.5;transition:opacity .3s,outline .3s;outline:2px solid transparent}
.thumbs button.on,.thumbs button:hover{opacity:1}
.thumbs button.on{outline-color:var(--sky)}
.thumbs img{width:112px;height:80px;object-fit:cover}
@media(max-width:860px){.light{grid-template-columns:1fr}}

/* calendar */
.calendar{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin-top:40px}
.month{border:1px solid var(--line);border-radius:12px;padding:12px;min-height:96px;cursor:pointer;position:relative;transition:border-color .3s}
.month .mn{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--mute)}
.month .dots{display:flex;flex-wrap:wrap;gap:5px;margin-top:10px}
.month .dot{width:9px;height:9px;border-radius:50%;background:var(--sky)}
.month.on{border-color:var(--sky)}
.month.dec{background:#f2c46d0d}
@media(max-width:700px){.calendar{grid-template-columns:repeat(3,1fr)}}
.cal-detail{margin-top:24px;min-height:70px;font-size:19px}
.cal-detail b{font-family:var(--serif);font-weight:500;font-size:30px;color:var(--sky);display:block}
.cal-list{margin-top:26px;border-top:1px solid var(--line)}
.cal-row{display:flex;justify-content:space-between;gap:16px;padding:11px 4px;border-bottom:1px solid var(--line);cursor:pointer;font-size:16px}
.cal-row span:last-child{color:var(--mute);font-variant-numeric:tabular-nums;text-align:right}
.cal-row.on{color:var(--sky)}
.cal-row.on span:last-child{color:var(--sky)}

/* clock */
.clock-wrap{display:grid;grid-template-columns:420px 1fr;gap:40px;margin-top:36px;align-items:start}
#clock{width:100%;max-width:420px}
.clock-list{max-height:430px;overflow-y:auto;border-top:1px solid var(--line)}
@media(max-width:860px){.clock-wrap{grid-template-columns:1fr}.clock-list{max-height:none}}

/* ancients */
.ancients{margin-top:44px;display:flex;flex-direction:column;gap:16px}
.anc{display:grid;grid-template-columns:76px 1fr;gap:16px;align-items:center;cursor:pointer}
.anc .ph{width:76px;height:76px;border-radius:50%;background:#ffffff10 center/cover;border:1px solid var(--line)}
.anc .nm{display:flex;justify-content:space-between;font-size:16px;margin-bottom:6px}
.anc .nm span:last-child{color:var(--mute)}
.anc .tr{height:16px;border-radius:3px;background:#ffffff0d;overflow:hidden}
.anc .tr div{height:100%;width:0;background:linear-gradient(90deg,#5fd0e6,#5fd0e6aa);transition:width 1.6s cubic-bezier(.2,.8,.2,1)}
.anc.human .tr div{background:var(--sky)}
.anc.on .nm span:first-child{color:var(--sea)}
.compare{margin-top:36px;border:1px solid var(--line);border-radius:16px;padding:26px;font-size:19px;min-height:120px}
.compare b{font-family:var(--serif);font-weight:500;font-size:28px;display:block;margin-bottom:8px;color:var(--sea)}

/* diptychs */
.diptychs{display:flex;flex-direction:column;gap:90px;margin-top:50px}
.dip-imgs{display:grid;grid-template-columns:1fr 1fr;gap:6px;border-radius:16px;overflow:hidden}
.dip-imgs img{width:100%;aspect-ratio:1/1;object-fit:cover;cursor:zoom-in}
.dip h3{margin-top:22px}
.dip p{color:var(--mute);max-width:680px;font-size:18px;margin-top:6px}

/* gallery */
.filters{display:flex;gap:10px;margin:30px 0}
.filters button{border:1px solid var(--line);border-radius:30px;padding:7px 18px;font-size:14px;color:var(--mute)}
.filters button.on{color:var(--bg);background:var(--ink);border-color:var(--ink)}
.grid{columns:3 280px;column-gap:12px}
.grid figure{break-inside:avoid;margin-bottom:12px;border-radius:10px;overflow:hidden;cursor:zoom-in;position:relative}
.grid figure img{width:100%;transition:transform .6s}
.grid figure:hover img{transform:scale(1.04)}
.grid figcaption{position:absolute;inset:auto 0 0 0;padding:30px 12px 10px;font-size:13px;background:linear-gradient(#0000,#000c);opacity:0;transition:opacity .3s}
.grid figure:hover figcaption{opacity:1}

/* footer */
.foot{padding:140px 0 80px;text-align:center;background:radial-gradient(ellipse at top,#0e1630,var(--bg) 70%)}
.foot h2{max-width:800px;margin:0 auto .5em}
.foot p{max-width:640px;margin:0 auto;color:var(--mute)}
.credits{margin-top:60px!important;font-size:14px}
.sources{margin-top:16px!important;font-size:12px;color:var(--dim)!important}

/* lightbox */
.lightbox{position:fixed;inset:0;z-index:100;background:#000e;display:flex;align-items:center;justify-content:center}
.lightbox[hidden]{display:none}
.lightbox img{max-width:94vw;max-height:84vh;object-fit:contain}
.lb-close{position:absolute;top:12px;right:20px;font-size:44px;line-height:1;color:#fff}
.lb-nav{position:absolute;top:50%;transform:translateY(-50%);font-size:64px;color:#fff;padding:20px;opacity:.6}
.lb-nav:hover{opacity:1}
.lb-nav.prev{left:4px}.lb-nav.next{right:4px}
.lb-cap{position:absolute;bottom:22px;left:0;right:0;text-align:center;font-size:16px;padding:0 20px}
.lb-cap small{display:block;color:var(--mute);font-size:14px}

/* expo mode */
.expo{position:fixed;inset:0;z-index:200;background:#000;cursor:none}
.expo[hidden]{display:none}
.expo-slide{position:absolute;inset:0;background:#000 center/contain no-repeat;opacity:0;transition:opacity 2s}
.expo-slide.show{opacity:1;animation:kb 12s linear forwards}
@keyframes kb{from{transform:scale(1)}to{transform:scale(1.06)}}
.expo-cap{position:absolute;left:5vw;bottom:6vh;max-width:60vw;text-shadow:0 2px 12px #000;transition:opacity 1s}
.expo-cap .k{font-size:clamp(12px,1.2vw,16px);letter-spacing:.18em;text-transform:uppercase;color:var(--sky)}
.expo-cap h3{font-size:clamp(28px,3.6vw,56px);margin:.15em 0}
.expo-cap p{font-size:clamp(16px,1.6vw,24px);color:#dfe4ee}
.expo-cap.fact{left:50%;top:50%;bottom:auto;transform:translate(-50%,-50%);text-align:center;max-width:80vw}
.expo-cap.fact h3{font-size:clamp(40px,6vw,96px);color:var(--sky)}
.expo::after{content:"";position:absolute;inset:auto 0 0 0;height:40vh;background:linear-gradient(#0000,#000b);pointer-events:none}
.expo-cap{z-index:2}
.expo-hint{position:absolute;top:16px;right:20px;font-size:12px;color:#fff6}

@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* language switch */
.lang{display:flex;border:1px solid var(--line);border-radius:30px;overflow:hidden}
.lang button{font-size:12px;letter-spacing:.06em;padding:6px 10px;color:var(--mute)}
.lang button.on{background:var(--ink);color:var(--bg)}
@media(max-width:520px){.top{gap:10px;padding:12px 14px}.brand{font-size:20px}.expo-btn{font-size:0;padding:7px 12px}.expo-btn::before{content:"▶";font-size:13px}.lang button{padding:6px 8px;font-size:11px}}