:root{--bg:#ffffff;--text:#1a1a1a;--mute:#5b626b;--line:#dcdfe3;--soft:#f4f5f7;--accent:#1e40af}
@media (prefers-color-scheme:dark){:root{--bg:#0f1115;--text:#e8eaed;--mute:#9aa0a8;--line:#2a2e35;--soft:#171a20;--accent:#8ab4ff}}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Georgia,"Times New Roman",serif;line-height:1.65}
nav,button,input,.ui,.meta,.cat,.read,.sec,small{font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--accent)}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
#progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--accent);z-index:30}
.topstrip{border-bottom:1px solid var(--line);font:12px system-ui,sans-serif;color:var(--mute)}
.topstrip .wrap{display:flex;justify-content:space-between;gap:12px;padding:7px 20px;flex-wrap:wrap}
.brand{text-align:center;padding:22px 20px 16px}
.logo{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:var(--text)}
.logo img{border-radius:10px;display:block}
.logo span{font-family:Georgia,"Times New Roman",serif;font-size:clamp(1.9rem,5vw,2.9rem);font-weight:700;letter-spacing:-.01em;line-height:1}
.mainnav{position:sticky;top:0;z-index:20;background:var(--bg);border-top:3px solid var(--text);border-bottom:1px solid var(--line)}
.mainnav .wrap{display:flex;gap:2px;white-space:nowrap;align-items:center}
.mainnav a{padding:12px 14px;text-decoration:none;color:var(--text);font:600 .9rem system-ui,sans-serif;border-bottom:3px solid transparent;margin-bottom:-1px}
.mainnav a:hover{color:var(--accent)}
.mainnav a.on{border-bottom-color:var(--accent);color:var(--accent)}
.mainnav a.ext{margin-left:auto;color:var(--mute)}
.mainnav .wrap{overflow:visible}
.dd{position:relative}
.dd>button{font:600 .9rem system-ui,sans-serif;padding:12px 14px;background:none;border:0;border-bottom:3px solid transparent;color:var(--text);cursor:pointer;margin-bottom:-1px}
.dd>button:hover,.dd.open>button,.dd.on>button{color:var(--accent)}
.dd .menu{display:none;position:absolute;left:0;top:100%;min-width:230px;background:var(--bg);border:1px solid var(--line);box-shadow:0 10px 28px rgba(0,0,0,.22);z-index:30;padding:6px 0;white-space:normal}
.dd.open .menu{display:block}
@media(hover:hover){.dd:hover .menu{display:block}}
.dd .menu a{display:block;padding:9px 18px;border-bottom:0;margin:0;font-weight:500}
.dd .menu a:hover{background:var(--soft)}
@media(max-width:520px){.mainnav a,.dd>button{padding:12px 9px;font-size:.84rem}}

.searchrow{padding:18px 0 0}
.searchrow input{width:100%;max-width:420px;padding:10px 14px;border:1px solid var(--line);border-radius:6px;background:var(--soft);color:var(--text);font-size:.95rem}
.searchrow input:focus{outline:2px solid var(--accent)}
.sec{font:700 .78rem system-ui,sans-serif;letter-spacing:.12em;text-transform:uppercase;margin:34px 0 14px;padding-top:10px;border-top:2px solid var(--text)}
.top{display:grid;grid-template-columns:1fr;gap:28px;padding:24px 0 8px}
@media(min-width:860px){.top{grid-template-columns:1.7fr 1fr}.top .latest{border-left:1px solid var(--line);padding-left:28px}}
.lead{display:block;color:var(--text);text-decoration:none}
.lead h2{font-size:clamp(1.9rem,4.2vw,2.8rem);line-height:1.12;margin:8px 0 12px}
.lead p{font-size:1.15rem;color:var(--mute);margin:0 0 12px}
.lead:hover h2{color:var(--accent)}
.readmore{font:700 .9rem system-ui,sans-serif;color:var(--accent)}
.leadimg{width:100%;aspect-ratio:16/9;object-fit:cover;display:block;margin-bottom:14px;background:var(--soft)}
.latest .sec{margin-top:0}
.latest ol{list-style:none;margin:0;padding:0}
.latest li{border-bottom:1px solid var(--line);padding:14px 0}
.latest li:first-child{padding-top:0}
.latest li:last-child{border-bottom:0}
.latest a{display:block;text-decoration:none;color:var(--text)}
.latest strong{display:block;font-size:1.12rem;line-height:1.3;margin:4px 0;font-weight:700}
.latest a:hover strong{color:var(--accent)}
.cat{font:700 .72rem system-ui,sans-serif;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.read,.meta{font:.78rem system-ui,sans-serif;color:var(--mute)}
.grid{display:grid;gap:26px;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));padding-bottom:20px}
.card{display:block;text-decoration:none;color:var(--text);border-top:1px solid var(--line);padding-top:14px}
.card h3{font-size:1.3rem;line-height:1.22;margin:6px 0}
.card p{margin:0;color:var(--mute);font-size:.98rem}
.card:hover h3{color:var(--accent)}
.thumb{width:100%;aspect-ratio:16/9;object-fit:cover;margin-bottom:10px;display:block;background:var(--soft)}
.empty{color:var(--mute);font-family:system-ui,sans-serif}
article{max-width:720px;margin:0 auto;padding:28px 0 30px}
article h1{font-size:clamp(2rem,5vw,2.9rem);line-height:1.12;margin:10px 0}
article h2{font-size:1.5rem;margin:1.8em 0 .4em;line-height:1.25}
article p,article li{font-size:1.14rem}
.byline{font:.9rem system-ui,sans-serif;color:var(--mute);margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.back{font:600 .9rem system-ui,sans-serif;text-decoration:none}
figure.hero-img{margin:0 0 22px}
figure.hero-img img{width:100%;height:auto;display:block}
figcaption{font:.8rem system-ui,sans-serif;color:var(--mute);margin-top:6px}
.key{background:var(--soft);border-left:4px solid var(--accent);padding:14px 18px;margin:20px 0}
.key strong{font:700 .78rem system-ui,sans-serif;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
.key ul{margin:6px 0 0;padding-left:20px}
.warn{background:var(--soft);border:1px solid var(--line);padding:12px 16px;font:.9rem system-ui,sans-serif;color:var(--mute)}
.sources{border-top:1px solid var(--line);margin-top:2.4em;padding-top:1em}
.sources h3{font:700 .85rem system-ui,sans-serif;text-transform:uppercase;letter-spacing:.08em;margin:0 0 8px}
.sources ol{padding-left:22px;color:var(--mute);font-size:.95rem}
.sources .note{font:.85rem system-ui,sans-serif;color:var(--mute)}
.share{background:transparent;color:var(--text);border:1px solid var(--line);border-radius:999px;padding:7px 14px;cursor:pointer;font-size:.85rem;margin-top:10px}
.share:hover{border-color:var(--accent);color:var(--accent)}
.pn{display:grid;grid-template-columns:1fr 1fr;gap:12px;max-width:720px;margin:0 auto 24px}
.pn a{padding:14px 16px;border:1px solid var(--line);text-decoration:none;color:var(--text);font:.92rem system-ui,sans-serif}
.pn a:hover{border-color:var(--accent)}
.pn small{display:block;color:var(--accent);font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;font-weight:700}
.pn .r{text-align:right}
.related{max-width:1080px;margin:0 auto;padding-bottom:20px}
.page{max-width:720px;margin:0 auto;padding:10px 0 50px}
.pagetitle{font-size:2.2rem;line-height:1.15;margin:26px 0 16px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.page h2{font-size:1.4rem;margin:1.6em 0 .3em}
.page p,.page li{font-size:1.08rem}
footer{margin-top:50px;background:var(--soft);border-top:3px solid var(--text);padding:30px 0 22px;font:.9rem system-ui,sans-serif;color:var(--mute)}
.fcols{display:grid;gap:24px;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));padding-bottom:20px;border-bottom:1px solid var(--line)}
.fcols h4{margin:0 0 8px;font:700 .75rem system-ui,sans-serif;letter-spacing:.1em;text-transform:uppercase;color:var(--text)}
.fcols a{display:block;color:var(--mute);text-decoration:none;padding:3px 0}
.fcols a:hover{color:var(--accent)}
.legal{padding-top:16px;font-size:.8rem}
#top{position:fixed;right:18px;bottom:18px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:var(--bg);color:var(--accent);font-size:1.2rem;cursor:pointer;display:none;z-index:25}

/* ---- animated masthead + motion ---- */
header{position:relative;background:linear-gradient(180deg,#060914,#161c52);color:#e8ecf8;overflow:hidden}
#fx{position:absolute;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
header .topstrip{position:relative;z-index:1;border-bottom:1px solid rgba(255,255,255,.14);color:#b4bddb}
header .brand{position:relative;z-index:1;padding:34px 20px 30px}
header .logo{color:#fff}
header .logo span{text-shadow:0 0 28px rgba(138,180,255,.55)}
.logo img{animation:bob 6s ease-in-out infinite;box-shadow:0 0 24px rgba(138,180,255,.55)}
@keyframes bob{50%{transform:translateY(-4px)}}
.mainnav{border-top:3px solid var(--accent)}
.rv{opacity:1}
.rv.in{opacity:1;animation:rise .6s ease backwards;animation-delay:var(--d,0ms)}
@keyframes rise{from{opacity:0;transform:translateY(14px)}}
.card{transition:transform .2s,border-color .2s}
.card:hover{transform:translateY(-3px)}
@media (prefers-reduced-motion:reduce){.logo img{animation:none}.rv{opacity:1}}
.fcols .fh{margin:0 0 8px;font:700 .75rem system-ui,sans-serif;letter-spacing:.1em;text-transform:uppercase;color:var(--text)}
.sr{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
a.cat{text-decoration:none}a.cat:hover{text-decoration:underline}
.logo img{width:44px;height:44px}
.hero-img img,.thumb,.leadimg{height:auto}
@media(max-width:520px){.mainnav .wrap{flex-wrap:wrap}.mainnav a,.dd>button{padding:10px 8px}.mainnav a.ext{margin-left:0}}
.fcols a.rss::before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:#f08a1c;margin-right:8px}

:root[data-theme="dark"]{--bg:#0f1115;--text:#e8eaed;--mute:#9aa0a8;--line:#2a2e35;--soft:#171a20;--accent:#8ab4ff;color-scheme:dark}
:root[data-theme="light"]{--bg:#ffffff;--text:#1a1a1a;--mute:#5b626b;--line:#dcdfe3;--soft:#f4f5f7;--accent:#1e40af;color-scheme:light}
.themebtn{margin-left:auto;font:600 .82rem system-ui,sans-serif;background:none;border:1px solid var(--line);color:var(--text);border-radius:999px;padding:6px 12px;cursor:pointer;align-self:center;white-space:nowrap}
.themebtn:hover{border-color:var(--accent);color:var(--accent)}
.mainnav a.ext+.themebtn{margin-left:10px}
body,header,.card,.key,.menu{transition:background-color .25s,color .25s,border-color .25s}

.dfact{margin:0 0 20px}.dfl{border:1px solid var(--line);border-radius:12px;padding:14px 20px;background:linear-gradient(135deg,var(--soft),var(--bg));border-left:5px solid var(--accent)}
.dfk{font:800 .72rem system-ui,sans-serif;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
.dfl p{margin:4px 0 6px;font-size:1.12rem;line-height:1.5}.dfm{font:.85rem system-ui,sans-serif;color:var(--mute)}
.dfb{font:600 .85rem system-ui,sans-serif;background:none;border:0;color:var(--accent);cursor:pointer;padding:0;text-decoration:underline}
.tool{font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
.tool label{display:block;font-weight:600;font-size:.88rem;margin:10px 0 4px}
.tool input,.tool select,.tool textarea{font:inherit;font-size:1rem;padding:9px 12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--text);max-width:100%}
.tool textarea{width:100%;min-height:120px}
.tool .row{display:flex;flex-wrap:wrap;gap:14px;align-items:flex-end}
.tool .row>div{min-width:120px}
.btn{font:700 .95rem system-ui,sans-serif;background:var(--accent);color:var(--bg);border:0;border-radius:999px;padding:10px 22px;cursor:pointer}
.btn.ghost{background:none;color:var(--accent);border:1px solid var(--accent)}
.tool table{border-collapse:collapse;width:100%;margin:16px 0}
.tool th,.tool td{border:1px solid var(--line);padding:8px 12px;text-align:left}
.tool th small{display:block;font-weight:400;color:var(--mute);font-size:.75rem}
.gl{display:flex;flex-wrap:wrap;gap:6px;margin:14px 0}.gl a{padding:4px 10px;border:1px solid var(--line);border-radius:6px;text-decoration:none;font-weight:700;color:var(--text)}.gl a.on,.gl a:hover{background:var(--accent);color:var(--bg);border-color:var(--accent)}
.gsec h2{border-bottom:2px solid var(--accent);padding-bottom:4px;font-family:system-ui,sans-serif}
.gitem{padding:10px 0;border-bottom:1px solid var(--line)}.gitem h3{margin:0;font:700 1.05rem system-ui,sans-serif}.gitem p{margin:4px 0;font-size:1rem}.gitem small{color:var(--mute)}
.sl{list-style:none;padding:0;margin:16px 0}.sl li{padding:10px 14px;border:1px solid var(--line);border-radius:10px;margin:0 0 10px;cursor:pointer;background:var(--soft)}
.sl li.hl{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent)}
.sh{display:flex;justify-content:space-between;gap:12px}.sh span{color:var(--accent);font-weight:700;white-space:nowrap}
.sbar{height:8px;background:var(--line);border-radius:6px;margin:6px 0}.sbar i{display:block;height:100%;background:var(--accent);border-radius:6px}
.sl p{margin:0;font-size:.88rem;color:var(--mute)}
.zbox{border:1px solid var(--line);border-radius:12px;padding:16px 20px;background:var(--soft);margin:16px 0}.zbox input[type=range]{width:100%}
.big{display:block;font:800 1.8rem system-ui,sans-serif;color:var(--accent)}
.cmp{padding:14px 18px;border-left:5px solid var(--accent);background:var(--soft);border-radius:0 10px 10px 0;margin:12px 0;font-size:1.05rem}
.ptable td.pc,.ptable th{text-align:center}.ptable{overflow-x:auto}.pres{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}.pres ul{padding-left:18px}
.perr{color:#d97706;font-weight:600}.mono{font:600 1.05rem ui-monospace,Menlo,Consolas,monospace;word-break:break-all;background:var(--soft);padding:10px 14px;border-radius:8px}
.cds{display:flex;flex-wrap:wrap;gap:8px}.cd{border:1px solid var(--line);border-radius:8px;padding:6px 10px;text-align:center;background:var(--soft)}.cd i{display:block;font:normal 600 .9rem ui-monospace,monospace}.cd b{font-size:.9rem;color:var(--accent)}.cd.st{border-color:#d97706}.cd.st b{color:#d97706}.cd.sa{border-color:#198754}
.fcard{perspective:1000px;cursor:pointer;margin:16px auto;max-width:520px;height:260px}.fi{position:relative;width:100%;height:100%;transition:transform .5s;transform-style:preserve-3d}.fcard.flip .fi{transform:rotateY(180deg)}
.ff{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border:1px solid var(--line);border-radius:16px;padding:22px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;background:var(--soft);overflow:auto}
.ff.front b{font:700 1.7rem Georgia,serif}.ff span{font:800 .7rem system-ui;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:8px}.ff.back{transform:rotateY(180deg);border-color:var(--accent)}.ff p{margin:0;font-size:1.05rem;line-height:1.5}
.fctl{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin:10px 0}
.hint2{color:var(--mute);font-size:.9rem}
.toolgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:20px 0}.tcard{display:block;border:1px solid var(--line);border-radius:12px;padding:18px;text-decoration:none;color:var(--text);background:var(--soft)}.tcard:hover{border-color:var(--accent)}.tcard b{display:block;font:700 1.05rem system-ui,sans-serif;color:var(--accent);margin-bottom:4px}.tcard span{font:.9rem/1.45 system-ui,sans-serif;color:var(--mute)}

/* ===== shared explorer layout ===== */


.body3d .lede{color:var(--mute);margin:-4px 0 18px;max-width:62ch}
.bwrap{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:18px;align-items:start}
.bstage{position:relative;border-radius:14px;overflow:hidden;background:radial-gradient(ellipse at 50% 35%,#27384a 0,#101722 62%,#0a0f16 100%);border:1px solid var(--line);height:min(80vh,760px);min-height:440px;touch-action:none}
.bpanel{display:flex;flex-direction:column;gap:12px;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
.bbox{border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:var(--soft)}
.bl{display:block;font-weight:700;font-size:.85rem;margin:2px 0 8px}
.bbox input[type=range]{width:100%;accent-color:var(--accent)}
.bsteps{display:flex;justify-content:space-between;font-size:.68rem;color:var(--mute);margin:2px 0 10px}
.blay{display:flex;flex-wrap:wrap;gap:6px}
.bchip{display:inline-flex;align-items:center;font-size:.75rem;padding:5px 10px;border:1px solid var(--line);border-radius:999px;cursor:pointer;background:var(--bg);color:var(--mute);user-select:none}
.bchip input{position:absolute;opacity:0;pointer-events:none}
.bchip.on{background:var(--accent);color:#fff;border-color:var(--accent)}
:root[data-theme=dark] .bchip.on{color:#0b1410}
#bq{width:100%;box-sizing:border-box;font:inherit;padding:9px 12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--text)}
.bres{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.bres button{font:inherit;font-size:.75rem;padding:5px 9px;border-radius:8px;border:1px solid var(--line);background:var(--bg);color:var(--text);cursor:pointer;text-align:left}
.bmute{color:var(--mute);font-size:.85rem;margin:0}
.binfo h3{margin:2px 0 6px;font-size:1.05rem}.bsys{font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);font-weight:700}
.bgrp{font-size:.88rem;line-height:1.5;margin:6px 0}.bread{display:inline-block;font-weight:700;font-size:.85rem;margin:4px 0}
.brow{display:flex;gap:8px;margin-top:8px}.brow button{background:var(--bg);color:var(--text);border-color:var(--line);backdrop-filter:none}
@media(max-width:820px){.bwrap{grid-template-columns:1fr}.bstage{height:72vh;min-height:420px}}

/* ===== star map ===== */

main.wrap:has(.skypage){max-width:1180px}
.page.skypage{max-width:none}

/* ===== features ===== */
details.sources{border:1px solid var(--line);border-radius:12px;margin-top:2.2em;background:var(--soft);padding:0}
details.sources>summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:10px;padding:13px 16px;font:700 .9rem system-ui,-apple-system,"Segoe UI",sans-serif;letter-spacing:.02em;border-radius:12px;user-select:none}
details.sources>summary::-webkit-details-marker{display:none}
details.sources>summary .sn{background:var(--accent);color:#fff;border-radius:999px;font-size:.75rem;padding:2px 9px}
:root[data-theme=dark] details.sources>summary .sn{color:#0b1410}
details.sources>summary .sh{margin-left:auto;color:var(--mute);font-weight:600;font-size:.78rem}
details.sources>summary::after{content:"\25BE";color:var(--mute);transition:transform .2s}
details.sources[open]>summary::after{transform:rotate(180deg)}
details.sources>summary:hover{background:rgba(127,127,127,.08)}
details.sources>summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
details.sources .sbody{padding:2px 18px 14px;border-top:1px solid var(--line)}
details.sources ol{margin-top:12px}
details.sources li.flash{background:rgba(255,200,60,.28);border-radius:6px;transition:background 1.2s}
a.cite{text-decoration:none;font-weight:700;color:var(--accent)}
a.cite:hover{text-decoration:underline}
sup:has(>a.cite){font-size:.7em}
.card{position:relative}
.progbar{display:flex;gap:12px;align-items:center;flex-wrap:wrap;border:1px solid var(--line);background:var(--soft);border-radius:12px;padding:10px 14px;margin:14px 0;font:600 .85rem system-ui,sans-serif}
.progbar .track{flex:1;min-width:120px;height:8px;background:var(--line);border-radius:99px;overflow:hidden}
.progbar .fill{height:100%;background:var(--accent);border-radius:99px;transition:width .6s}
.progbar a{font-weight:700}
.igcta{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap;border-radius:14px;padding:16px 20px;margin:26px 0;background:linear-gradient(120deg,var(--accent),#8b5cf6);color:#fff;font:600 .95rem system-ui,sans-serif}
.igcta a{background:#fff;color:#111;padding:8px 16px;border-radius:999px;font-weight:700;text-decoration:none}
.igcta strong{font-size:1.05rem;display:block}
.hub{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin:18px 0}
.hub a{display:block;border:1px solid var(--line);border-radius:14px;padding:16px 18px;background:var(--soft);text-decoration:none;color:var(--text);transition:transform .15s,border-color .15s}
.hub a:hover{transform:translateY(-2px);border-color:var(--accent)}
.hub .ic{font-size:1.8rem;display:block;margin-bottom:6px}
.hub strong{display:block;font:700 1rem system-ui,sans-serif;margin-bottom:3px}
.hub span.d{font:.84rem/1.4 system-ui,sans-serif;color:var(--mute)}
@media print{header,nav,footer,.noprint,#top,#progress,.themebtn{display:none!important}body{background:#fff!important;color:#000!important}.sheet{border:0!important}}
.tool .out{margin-top:14px;font-size:1rem}
.btn{font:700 .9rem system-ui,sans-serif;padding:9px 16px;border-radius:999px;border:1px solid var(--accent);background:var(--accent);color:#fff;cursor:pointer}
:root[data-theme=dark] .btn{color:#0b1410}
.btn.ghost{background:transparent;color:var(--accent)}
.pill{display:inline-block;font:600 .75rem system-ui,sans-serif;padding:3px 10px;border-radius:99px;background:var(--soft);border:1px solid var(--line);color:var(--mute)}

.chips{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0 4px}
.chip{font:600 .8rem system-ui,sans-serif;padding:6px 12px;border-radius:99px;border:1px solid var(--line);background:var(--bg);color:var(--text);cursor:pointer}
.chip.on{background:var(--accent);color:#fff;border-color:var(--accent)}
.tlist{list-style:none;margin:20px 0;padding:0;position:relative}
.tlist::before{content:"";position:absolute;left:120px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tlist li{display:flex;gap:40px;margin:0 0 20px;position:relative}.tlist li[hidden]{display:none}
.tlist .ty{flex:0 0 100px;text-align:right;font:800 .95rem system-ui,sans-serif;color:var(--accent);padding-top:12px}
.tlist .tc{flex:1;border:1px solid var(--line);border-radius:12px;padding:12px 16px;background:var(--soft);position:relative}
.tlist .tc::before{content:"";position:absolute;left:-27px;top:16px;width:12px;height:12px;border-radius:50%;background:var(--accent);border:2px solid var(--bg)}
.tlist .tc h3{margin:0 0 4px;font-size:1.05rem}.tlist .tc p{margin:0;font-size:.92rem;line-height:1.5;color:var(--mute)}
@media(max-width:560px){.tlist::before{left:8px}.tlist li{flex-direction:column;gap:4px;padding-left:28px}.tlist .ty{text-align:left;padding:0;flex:none}.tlist .tc::before{left:-27px}}
.sheet{border:1px solid var(--line);border-radius:12px;padding:6px 18px 14px;margin:18px 0;break-inside:avoid}.sheet h2{margin:.8em 0 .4em;font-size:1.25rem}.sheet table{border-collapse:collapse;width:100%;font-size:.9rem}.sheet th,.sheet td{border:1px solid var(--line);padding:6px 10px;text-align:left}.small{font-size:.8rem;color:var(--mute)}

/* progress + share */
.pgstats{display:flex;gap:12px;flex-wrap:wrap;margin:14px 0}.pgs{flex:1;min-width:130px;border:1px solid var(--line);border-radius:12px;padding:14px;background:var(--soft);text-align:center}.pgs strong{display:block;font:800 1.9rem system-ui,sans-serif;color:var(--accent)}.pgs span{font-size:.82rem;color:var(--mute)}
.pgbar{height:14px;background:var(--line);border-radius:99px;overflow:hidden}.pgbar span{display:block;height:100%;background:var(--accent);width:0;transition:width .4s}
.pglist{list-style:none;padding:0}.pglist li{padding:8px 0;border-bottom:1px solid var(--line)}.mute{color:var(--mute)}
.sccanvas{width:100%;max-width:540px;height:auto;border:1px solid var(--line);border-radius:12px;display:block;margin:14px 0}

/* mobile nav v2 */
@media(max-width:700px){.mainnav{position:static}.mainnav .wrap{position:relative}.dd{position:static}.dd .menu{left:8px;right:8px;top:100%;min-width:0;max-height:min(70vh,520px);overflow:auto;border-radius:0 0 12px 12px}.dd .menu a{padding:12px 18px}}

/* mobile chrome */
@media(max-width:700px){header .topstrip{display:none}header .brand,header.brandh .brand{padding:14px 16px 12px}.logo img{width:34px;height:34px}.logo span{font-size:1.6rem!important}.mainnav a,.dd>button{padding:9px 7px!important;font-size:.8rem!important}.pagetitle{font-size:1.65rem!important;margin:14px 0 10px!important;padding-bottom:8px!important}.page .lede{font-size:.98rem;line-height:1.5;margin:.4em 0 .8em}.wrap{padding:0 16px}}

/* glance */
.glance{margin-top:16px!important;display:grid;grid-template-columns:1fr 1fr;gap:14px;align-items:start;margin:0 0 14px}.glance .dfact{margin:0}.glance .dq{margin:0}.glance .dq .qo{display:grid;grid-template-columns:1fr 1fr;gap:8px}.glance .dq .qopt{padding:10px 12px;font-size:.88rem}.glance .dq h3{font-size:1rem}
.schoolbanner{margin:0 0 14px!important;padding:12px 18px!important}
@media(max-width:820px){.glance{grid-template-columns:1fr}.glance .dq .qo{grid-template-columns:1fr 1fr}}

.dfact{margin-top:16px}.glance .dfact{margin-top:0}

/* skip link */
.skip{position:absolute;left:8px;top:-60px;z-index:1000;background:#fff;color:#111;padding:8px 14px;border-radius:6px;font:600 14px/1.2 system-ui,sans-serif;box-shadow:0 2px 10px rgba(0,0,0,.4)}
.skip:focus{top:8px}

/* astro tools */
.mnow{display:flex;gap:22px;align-items:center;flex-wrap:wrap;border:1px solid var(--line);border-radius:14px;padding:18px 22px;background:var(--soft);font-family:system-ui,sans-serif}
.mname{font:800 1.6rem system-ui,sans-serif}.mnow p{margin:6px 0 0}
.mnext{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin:14px 0 22px;font-family:system-ui,sans-serif}
.mn{display:flex;flex-direction:column;align-items:center;gap:4px;border:1px solid var(--line);border-radius:12px;padding:12px;background:var(--soft);text-align:center;font-size:.85rem}.mn strong{font-size:.95rem}
.mcal{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;margin:14px 0;font-family:system-ui,sans-serif}
.mcal .mh{font-size:.7rem;text-transform:uppercase;letter-spacing:.06em;color:var(--mute);text-align:center;font-weight:700}
.mcal .md{display:flex;flex-direction:column;align-items:center;gap:2px;border:1px solid var(--line);border-radius:10px;padding:5px 2px;background:var(--soft);min-height:60px}.mcal .md span{font-size:.72rem;color:var(--mute)}
.mcal .md.today{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent)}
.bhtool canvas{width:100%;max-width:900px;height:auto;margin-top:16px}
/* sky ux */
.binfo[hidden]{display:none}

/* instagram card */
.igcard{display:flex;align-items:center;gap:16px;max-width:520px;margin:10px 0 6px;padding:16px 18px;border:1px solid var(--line,#ffffff33);border-radius:16px;text-decoration:none;color:inherit;background:linear-gradient(135deg,rgba(131,58,180,.16),rgba(253,29,29,.12) 55%%,rgba(252,176,69,.14));transition:transform .18s,box-shadow .18s}
.igcard:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.25)}
.igcard svg{flex:none;color:#e1306c}.igcard span{flex:1;display:flex;flex-direction:column;gap:2px}.igcard b{font-size:1.05rem}.igcard small{opacity:.75;font-size:.85rem}
.igcard em{font-style:normal;font-weight:600;padding:7px 16px;border-radius:999px;background:#e1306c;color:#fff;font-size:.88rem}

@media print{.rv{opacity:1!important}}

/* inline article figures */
figure.fig{margin:26px 0}
figure.fig img{width:100%;height:auto;display:block;border:1px solid var(--line);background:#0b0f2a}
figure.fig.tall{max-width:520px;margin-left:auto;margin-right:auto}
figure.fig figcaption{font:.82rem/1.45 system-ui,sans-serif;color:var(--mute);margin-top:8px}