[hidden]{display:none!important}
:root{
  --bg:#f6f7f9; --panel:#fff; --ink:#14181f; --ink2:#4a5261; --ink3:#7b8494; --line:#e4e7ec; --line2:#eef0f3;
  --accent:#1d4f91; --accent-ink:#fff; --accent-soft:#e9f0fa; --warn:#9a5b00; --warn-soft:#fff6e6;
  --radius:14px; --shadow:0 1px 2px rgba(16,24,40,.04),0 1px 3px rgba(16,24,40,.06);
  --shadow-lg:0 12px 32px rgba(16,24,40,.14);
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Text","Inter","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --adbar-h:84px;
  --serif:"Charter","Iowan Old Style","Source Serif Pro",Georgia,serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 var(--font);-webkit-font-smoothing:antialiased}
button{font:inherit;color:inherit}
a{color:var(--accent)}
.ic{width:18px;height:18px;flex:none}

/* top bar */
.topbar{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line)}
.topbar-inner{max-width:1080px;margin:0 auto;padding:12px 20px 8px;display:flex;align-items:center;gap:16px;justify-content:space-between;padding-top:max(12px,env(safe-area-inset-top))}
.brand{display:flex;align-items:center;gap:11px;min-width:0}
.logo{width:34px;height:34px;color:var(--accent);flex:none}
.brand h1{margin:0;font-size:20px;letter-spacing:-.02em;font-weight:700;line-height:1.1}
.updated{font-size:12.5px;color:var(--ink3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.actions{display:flex;gap:8px;flex:none}
.btn{display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 14px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;font-weight:550;font-size:14px;transition:background .15s,border-color .15s,transform .05s}
.btn:hover{background:#f4f6f8}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.primary:hover{background:#174279}
.btn.ghost{background:transparent}
.btn.small{height:30px;padding:0 11px;font-size:13px;border-radius:8px}
.btn[disabled]{opacity:.55;cursor:default}
.btn .count{background:rgba(255,255,255,.22);border-radius:999px;padding:0 7px;font-size:12px;line-height:19px;min-width:20px;text-align:center}
.btn.spinning .ic{animation:spin .9s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.toolbar{max-width:1080px;margin:0 auto;padding:4px 20px 10px;display:flex;gap:12px;align-items:center}
.chips{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;flex:1;min-width:0;padding:2px 0}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 11px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:13px;font-weight:550;color:var(--ink2);cursor:pointer;white-space:nowrap}
.chip .dot{width:8px;height:8px;border-radius:50%}
.chip .n{color:var(--ink3);font-weight:500;font-variant-numeric:tabular-nums}
.chip[aria-selected=true]{background:var(--ink);border-color:var(--ink);color:#fff}
.chip[aria-selected=true] .n{color:#c9ced8}
.search{flex:0 1 300px;display:flex;align-items:center;gap:8px;height:34px;padding:0 11px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink3)}
.search input{border:0;outline:0;font:inherit;font-size:14px;flex:1;min-width:0;background:transparent;color:var(--ink)}
.search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}

/* feed */
main{max-width:1080px;margin:0 auto;padding:18px 20px 60px}
.feed{display:flex;flex-direction:column;gap:14px}
.day{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink3);margin:10px 2px -2px}
.card{display:grid;grid-template-columns:340px 1fr;gap:0;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:box-shadow .2s,border-color .2s}
.card:hover{box-shadow:0 4px 18px rgba(16,24,40,.08);border-color:#d9dde4}
.ga{position:relative;background:#fff;border-right:1px solid var(--line2);display:flex;align-items:center;justify-content:center;min-height:190px;cursor:zoom-in;padding:10px}
.ga img{max-width:100%;max-height:260px;object-fit:contain;display:block}
.ga .tag{position:absolute;left:8px;bottom:8px;font-size:10.5px;font-weight:650;letter-spacing:.03em;padding:2px 7px;border-radius:6px;background:rgba(20,24,31,.72);color:#fff}
.mono{cursor:default;padding:0;background:color-mix(in srgb,var(--mono,#334) 9%,#fff)}
.mono .mono-inner{width:100%;height:100%;min-height:190px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;color:var(--mono,#334);position:relative;overflow:hidden}
.mono svg.hexes{position:absolute;inset:0;width:100%;height:100%;opacity:.16}
.mono svg.hexes g{stroke:var(--mono,#334)}
.mono .abbr{font:700 26px/1 var(--serif);letter-spacing:-.01em;position:relative}
.mono .sub{font-size:11.5px;opacity:.75;position:relative;font-weight:550;letter-spacing:.04em;text-transform:uppercase}
.body{padding:16px 20px 14px;display:flex;flex-direction:column;gap:7px;min-width:0}
.meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 8px;font-size:12.5px;color:var(--ink3)}
.pill{display:inline-flex;align-items:center;height:22px;padding:0 9px;border-radius:999px;font-size:12px;font-weight:650;color:#fff;background:var(--c,#333)}
.badge{display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:6px;font-size:11.5px;font-weight:600;color:var(--ink2);background:#f1f3f6}
.badge.pre{background:var(--warn-soft);color:var(--warn)}
.sep{width:3px;height:3px;border-radius:50%;background:#c3c8d1}
.title{margin:0;font:600 18px/1.32 var(--serif);letter-spacing:-.005em;color:var(--ink)}
.title a{color:inherit;text-decoration:none}
.title a:hover{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.authors{font-size:13.5px;color:var(--ink2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.abstract{font-size:14px;color:#2b313c;line-height:1.55;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.card.open .abstract{-webkit-line-clamp:unset;display:block}
.abstract sub,.abstract sup{line-height:0}
.foot{display:flex;align-items:center;gap:6px;margin-top:4px;flex-wrap:wrap}
.link{display:inline-flex;align-items:center;gap:5px;height:30px;padding:0 11px;border-radius:8px;font-size:13px;font-weight:600;text-decoration:none;border:1px solid var(--line);color:var(--ink);background:#fff}
.link:hover{background:#f4f6f8}
.link.primary{color:var(--accent);border-color:#cfdcef;background:var(--accent-soft)}
.link.primary:hover{background:#dde8f7}
.doi{margin-left:auto;font:12px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--ink3);background:none;border:0;cursor:copy;padding:4px;border-radius:6px;max-width:48%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.doi:hover{background:#f1f3f6;color:var(--ink2)}

/* skeleton */
.sk{background:linear-gradient(90deg,#eef0f3 0,#f7f8fa 40%,#eef0f3 80%);background-size:300% 100%;animation:sh 1.3s ease-in-out infinite;border-radius:6px}
@keyframes sh{0%{background-position:100% 0}100%{background-position:0 0}}
.card.skel .ga{cursor:default}
.card.skel .ga .sk{width:100%;height:170px}

/* banners / empty */
.banner{border:1px solid #f3d9a8;background:var(--warn-soft);color:#6b4300;border-radius:12px;padding:10px 14px;font-size:13.5px;margin-bottom:14px}
.empty{text-align:center;padding:70px 20px;color:var(--ink2);background:#fff;border:1px dashed #d6dbe3;border-radius:var(--radius)}
.empty h3{margin:12px 0 6px;font:600 20px var(--serif);color:var(--ink)}
.empty p{margin:0 0 18px}
.sources{margin-top:26px;font-size:12px;color:var(--ink3);display:flex;flex-wrap:wrap;gap:6px 14px;justify-content:center}
.sources .ok::before{content:"●";color:#2e9e5b;margin-right:5px}
.sources .cached::before{content:"●";color:#d39b00;margin-right:5px}
.sources .bad::before{content:"●";color:#c0392b;margin-right:5px}

/* drawer */
.scrim{position:fixed;inset:0;background:rgba(15,20,30,.38);z-index:40;animation:fade .2s}
@keyframes fade{from{opacity:0}}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(420px,100vw);background:#fff;z-index:50;box-shadow:var(--shadow-lg);display:flex;flex-direction:column;transform:translateX(102%);transition:transform .28s cubic-bezier(.2,.8,.2,1)}
.drawer.open{transform:none}
.drawer-head{display:flex;justify-content:space-between;align-items:flex-start;padding:20px 20px 10px;padding-top:max(20px,env(safe-area-inset-top))}
.drawer-head h2{margin:0;font:700 22px var(--serif)}
.drawer-head p{margin:2px 0 0;color:var(--ink3);font-size:13.5px}
.icon-btn{border:0;background:#f1f3f6;width:32px;height:32px;border-radius:50%;cursor:pointer;font-size:14px;color:var(--ink2)}
.drawer-quick{display:flex;gap:6px;padding:4px 20px 12px;border-bottom:1px solid var(--line)}
.drawer-body{flex:1;overflow:auto;padding:6px 10px 10px}
.group-label{font-size:11.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink3);padding:14px 10px 6px}
.jrow{display:flex;align-items:center;gap:12px;padding:10px;border-radius:10px;cursor:pointer;user-select:none}
.jrow:hover{background:#f6f7f9}
.jrow .sw{width:36px;height:36px;border-radius:9px;color:#fff;font:700 11px/1 var(--font);display:flex;align-items:center;justify-content:center;flex:none;text-align:center;letter-spacing:-.01em;padding:2px}
.jrow .txt{flex:1;min-width:0}
.jrow .nm{font-weight:600;font-size:14.5px;line-height:1.25}
.jrow .pub{font-size:12.5px;color:var(--ink3)}
.toggle{position:relative;width:42px;height:25px;flex:none}
.toggle input{opacity:0;position:absolute;inset:0;margin:0;cursor:pointer}
.toggle span{position:absolute;inset:0;background:#d5d9e0;border-radius:999px;transition:background .18s;pointer-events:none}
.toggle span::after{content:"";position:absolute;width:19px;height:19px;left:3px;top:3px;background:#fff;border-radius:50%;box-shadow:0 1px 2px rgba(0,0,0,.2);transition:transform .18s}
.toggle input:checked+span{background:var(--accent)}
.toggle input:checked+span::after{transform:translateX(17px)}
.toggle input:focus-visible+span{box-shadow:0 0 0 3px var(--accent-soft)}
.drawer-foot{display:flex;gap:8px;justify-content:flex-end;padding:14px 20px;border-top:1px solid var(--line);padding-bottom:max(14px,env(safe-area-inset-bottom))}
.drawer-foot .btn{height:40px}
.drawer-note{font-size:12px;color:var(--ink3);padding:4px 10px 0}

/* lightbox */
.lightbox{position:fixed;inset:0;z-index:60;background:rgba(10,12,16,.82);display:flex;align-items:center;justify-content:center;padding:24px;cursor:zoom-out;animation:fade .15s}
.lightbox figure{margin:0;max-width:min(1100px,96vw);max-height:92vh;display:flex;flex-direction:column;gap:10px}
.lightbox img{background:#fff;border-radius:10px;max-width:100%;max-height:82vh;object-fit:contain;padding:12px}
.lightbox figcaption{color:#e8ebf0;font:500 14px/1.4 var(--serif);text-align:center}

.toast{position:fixed;left:50%;bottom:calc(var(--adbar-h) + 18px);transform:translateX(-50%);background:var(--ink);color:#fff;padding:8px 14px;border-radius:10px;font-size:13px;z-index:70;box-shadow:var(--shadow-lg);animation:fade .2s}

.card.noimg{grid-template-columns:132px 1fr}
.card.noimg .mono .mono-inner{min-height:100%;padding:12px 8px;gap:8px}
.card.noimg .mono .abbr{font-size:19px;text-align:center}
.card.noimg .mono .sub{font-size:10px;text-align:center;line-height:1.3}
@media (max-width:760px){
  .card.noimg{grid-template-columns:1fr;border-left:4px solid var(--c)}
  .card.noimg .ga{display:none}
  .topbar-inner{padding:10px 14px 6px}
  .toolbar{padding:2px 14px 10px;flex-direction:column;align-items:stretch;gap:8px}
  .search{flex:none}
  main{padding:12px 12px 50px}
  .card{grid-template-columns:1fr}
  .ga{border-right:0;border-bottom:1px solid var(--line2);min-height:150px}
  .ga img{max-height:230px}
  .mono .mono-inner{min-height:96px}
  .body{padding:14px 15px 12px}
  .title{font-size:17px}
  .btn .lbl{display:none}
  .btn{padding:0 11px}
  .doi{display:none}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
.abstract .lead{font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--ink3);margin-right:4px}
.abstract.full{display:none}
.card.open .abstract.full{display:block}
.card.open .abstract.toc{-webkit-line-clamp:unset;display:block}

/* advertiser strip — sticky bottom banner */
main{padding-bottom:calc(var(--adbar-h) + 40px)}
.adbar{position:fixed;left:0;right:0;bottom:0;z-index:30;height:calc(var(--adbar-h) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:rgba(255,255,255,.94);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-top:1px solid var(--line);box-shadow:0 -4px 16px rgba(16,24,40,.05)}
.adbar-inner{max-width:1080px;height:var(--adbar-h);margin:0 auto;padding:7px 20px;display:flex;align-items:stretch;gap:12px}
.ad-label{writing-mode:vertical-rl;transform:rotate(180deg);font-size:9.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--ink3);text-align:center;flex:none;border-left:1px solid var(--line);padding-left:6px}
.ad-slots{flex:1;display:flex;gap:10px;min-width:0}
.ad-slot{position:relative;display:flex;align-items:center;justify-content:center;border-radius:10px;overflow:hidden;text-decoration:none;color:var(--ink3);min-width:0}
.ad-slot.primary{flex:0 1 728px}
.ad-slot.secondary{flex:1 1 220px;max-width:300px}
/* real creatives: keep the IAB aspect ratio so 728×90 / 300×90 art is never cropped */
.ad-slot.has-cr{background:#f4f6f9;border:1px solid var(--line)}
.ad-slot.primary.has-cr{flex:0 1 auto;aspect-ratio:728/90;height:100%;max-width:728px}
.ad-slot.secondary.has-cr{flex:0 1 auto;aspect-ratio:300/90;height:100%;max-width:300px}
.ad-cr{position:absolute;inset:0;display:block;opacity:0;visibility:hidden;transition:opacity .6s ease,visibility 0s linear .6s}
.ad-cr.on{opacity:1;visibility:visible;transition:opacity .6s ease}
.ad-cr img{width:100%;height:100%;object-fit:contain;display:block;user-select:none}
.ad-slot img{width:100%;height:100%;object-fit:contain;display:block}
.ad-slot.ph{border:1.5px dashed #c9d2df;background:repeating-linear-gradient(135deg,#fafbfc 0 10px,#f4f6f9 10px 20px)}
.ad-slot.ph .ph-inner{display:flex;align-items:center;gap:10px;padding:0 14px;white-space:nowrap;overflow:hidden}
.ad-slot.ph svg{width:24px;height:24px;color:var(--accent);opacity:.45;flex:none}
.ad-slot.ph .t{font-size:13.5px;font-weight:600;color:var(--ink2)}
.ad-slot.ph .s{font-size:11.5px;color:var(--ink3);font-variant-numeric:tabular-nums}
.ad-slot .corner{position:absolute;top:3px;right:5px;z-index:2;font-size:8.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#fff;background:rgba(20,24,31,.45);padding:1px 5px;border-radius:4px;pointer-events:none}
.ad-slot.ph .corner{color:var(--ink3);background:none}
.ad-dots{position:absolute;left:50%;bottom:4px;transform:translateX(-50%);z-index:2;display:flex;gap:4px;pointer-events:none}
.ad-dots i{width:5px;height:5px;border-radius:50%;background:rgba(255,255,255,.55);box-shadow:0 0 0 1px rgba(0,0,0,.12)}
.ad-dots i.on{background:#fff}
@media (max-width:760px){
  :root{--adbar-h:80px}
  .adbar-inner{padding:6px 12px;flex-direction:column;gap:3px}
  .ad-label{writing-mode:horizontal-tb;transform:none;border:0;padding:0;text-align:left;font-size:9px}
  .ad-slots{flex:1;min-height:0;justify-content:center}
  .ad-slot.primary,.ad-slot.primary.has-cr{flex:1 1 auto;height:auto;max-width:none;aspect-ratio:auto}
  .ad-slot.secondary{display:none}
  main{padding-bottom:calc(var(--adbar-h) + 30px)}
}
.jrow .new{display:inline-block;vertical-align:1px;margin-left:4px;font:700 9.5px/1 var(--font);letter-spacing:.06em;text-transform:uppercase;color:var(--accent);background:var(--accent-soft);padding:3px 5px;border-radius:5px}
.more{display:flex;justify-content:center;padding:18px 0 6px;color:var(--ink3);font-size:13px}
.more:empty{padding:0}