/* AI4S Reading Room: shared Frontier motion above, quiet reading below. */
.center-page [hidden]{display:none!important}
.center-page{overflow-x:clip}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.center-page .header-actions{margin-left:auto}
.center-page .main-nav [aria-current]{color:var(--text);font-weight:550}
.center-home-link{display:none;font-size:11px;color:var(--text-2);padding:8px}
.center-main{padding-top:0;padding-bottom:80px}
.center-intro.frontier{width:100vw;margin:0 calc(50% - 50vw);height:440px;min-height:0;max-height:none;padding:36px 24px 66px}
.center-intro .frontier-content>*{animation:none}
.center-intro .frontier-eyebrow{font-size:10px;letter-spacing:.18em;margin-bottom:17px;gap:9px}
.center-intro .frontier-spark{font-size:25px}
.center-intro h1{font-size:clamp(59px,5vw,70px);font-weight:480;letter-spacing:-.065em;line-height:1.2}
.center-intro .frontier-description{font-size:14px;line-height:1.9;margin-top:17px}
.center-intro .frontier-actions{margin-top:24px;gap:10px}
.center-intro .frontier-button{height:45px;font-size:12px;padding-inline:23px;gap:17px}
.center-intro .frontier-halo{inset:7% 20% 12%;opacity:.84}
.center-intro .frontier-bottom{bottom:32px;font-size:9px}
.center-hero-label{font:8px var(--font-mono);letter-spacing:.16em}
.center-controls{position:relative;z-index:1;margin-top:-10px;padding:0 26px;border:1px solid var(--line);border-radius:25px;background:var(--surface);box-shadow:0 12px 36px -28px #5365aa45;scroll-margin-top:104px}
.center-toolbar{display:flex;justify-content:space-between;align-items:center;gap:28px;padding:22px 0 18px}
.center-views{display:flex;align-items:center;gap:7px}
.center-views button{height:42px;display:flex;align-items:center;gap:9px;padding:0 17px;border-radius:99px;font-size:13px;color:var(--text-2);white-space:nowrap;transition:background .2s,color .2s}
.center-views button>span{font-family:var(--font-mono);font-size:10px;opacity:.6;min-width:12px}
.center-views button svg{width:15px;height:15px}
.center-views button[aria-pressed="true"]{background:var(--pill);color:var(--pill-text)}
.center-views button:hover:not([aria-pressed="true"]){background:var(--bg-2)}
.center-search{display:flex;align-items:center;gap:10px;flex:1;max-width:380px;min-width:0;background:var(--bg-2);border:1px solid var(--line);border-radius:99px;padding:0 16px;height:42px}
.center-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.center-search>svg{width:17px;height:17px;flex:none;color:var(--text-3)}
.center-search input{flex:1;min-width:0;border:0;background:none;font:inherit;font-size:var(--type-input);color:var(--text);outline:none}
.center-search input::placeholder{color:var(--text-3)}
.center-search input::-webkit-search-cancel-button{display:none}
.center-search button{flex:none;font-size:10px;color:var(--text-2);min-width:24px;height:34px}
.center-search #clearSearch{font-size:18px;color:var(--text-3)}
.center-categories{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;padding-bottom:18px}
.center-categories::-webkit-scrollbar{display:none}
.center-categories button{flex:none;padding:7px 13px;border:1px solid transparent;border-radius:99px;font-size:var(--type-meta);color:var(--text-2);white-space:nowrap;transition:border-color .2s,color .2s}
.center-categories button[aria-pressed="true"]{border-color:color-mix(in srgb,var(--accent) 22%,var(--line));background:var(--accent-soft);color:var(--accent)}
.center-categories button:hover{color:var(--accent)}
.center-filter-bottom{display:flex;align-items:center;justify-content:space-between;gap:18px;border-top:1px solid var(--line);padding:14px 0}
.center-toggles{display:flex;align-items:center;flex-wrap:wrap;gap:24px}
.center-toggles label{display:flex;align-items:center;gap:8px;font-size:var(--type-meta);color:var(--text-2);cursor:pointer}
.center-toggles input{width:14px;height:14px;accent-color:var(--accent);cursor:pointer}
.center-sort{font-size:10px;color:var(--text-3);border-left:1px solid var(--line);padding-left:24px}
#refreshNews{display:flex;align-items:center;gap:7px;flex:none;font-size:11px;color:var(--text-2)}
#refreshNews svg{width:15px;height:15px}
#refreshNews:disabled{opacity:.5;cursor:progress}
.center-feedback{padding:17px 3px 24px;color:var(--text-3);font-size:var(--type-meta);line-height:1.8}
.center-feedback p:empty{display:none}
.center-feedback p+p{margin-top:5px}
#readerNotice{color:var(--accent)}
#storageNotice,.status-error{color:#ac6541}
[data-theme="dark"] #storageNotice,[data-theme="dark"] .status-error{color:#e2b494}
.center-content{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:54px;align-items:start}
.center-feed{min-width:0}
.center-list-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:17px}
.center-list-heading .section-eyebrow{font-size:8px;margin-bottom:12px}
.center-list-heading h2{font-size:27px;font-weight:500;letter-spacing:-.045em}
#resultCount{font-size:10px;color:var(--text-3)}
#newsList{scroll-margin-top:110px;outline:none}
#newsList:focus-visible{outline:2px solid var(--accent);outline-offset:5px}
.news-day{display:flex;align-items:center;gap:15px;font-family:var(--font-mono);font-size:10px;letter-spacing:.04em;margin:28px 0 15px;color:var(--text-3)}
.news-day::after{content:'';height:1px;background:var(--line);flex:1}
.news-day>span:last-child{font-size:7px;letter-spacing:.08em}
.center-card{border:1px solid transparent;border-radius:23px;padding:27px 30px 0;margin-bottom:20px;background:var(--bg-2);transition:border-color .25s,box-shadow .25s,background .25s}
/* Keep the card itself stationary: reading anchors must not drift on hover. */
.center-card:hover,.center-card:focus-within{border-color:color-mix(in srgb,var(--accent) 22%,var(--line));background:var(--surface-hover);box-shadow:0 16px 36px -27px #627bc952}
.center-card:focus{outline:none}
.center-card:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.center-card-top{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:15px}
.center-card-source{display:flex;align-items:center;gap:9px;flex-wrap:wrap;font-size:var(--type-meta);color:var(--text-3);min-width:0}
.source-initial{display:grid;place-items:center;width:25px;height:25px;border:1px solid var(--line);background:var(--surface);border-radius:8px;flex:none;color:var(--text-2);font:12px Georgia,serif}
.field-tag{border-left:1px solid var(--line);padding-left:10px;white-space:nowrap;color:var(--text-2)}
.center-ai{font-size:var(--type-meta);padding:1px 6px;border-radius:4px;border:1px solid color-mix(in srgb,var(--accent) 20%,transparent);color:var(--accent);white-space:nowrap}
.save-article{display:flex;align-items:center;justify-content:center;gap:5px;border:1px solid var(--line);border-radius:99px;padding:6px 10px;font-size:9px;white-space:nowrap;flex:none;color:var(--text-3);min-height:32px}
.save-article svg{width:15px;height:15px;transition:transform .2s}
.save-article{transition:background .2s,color .2s,border-color .2s}
.save-article:hover{color:var(--accent);border-color:color-mix(in srgb,var(--accent) 28%,var(--line))}
.save-article:hover svg{transform:translateY(-2px)}
.save-article[aria-pressed="true"]{color:var(--accent);background:var(--accent-soft);border-color:color-mix(in srgb,var(--accent) 30%,transparent)}
.save-article[aria-pressed="true"] svg{fill:var(--accent-soft)}
.center-card h3{font-size:21px;font-weight:550;line-height:1.65;letter-spacing:-.025em;overflow-wrap:anywhere}
.center-card h3 a:hover{color:var(--accent)}
.center-card.is-read h3{color:var(--text-2)}
.center-original-title{font-size:var(--type-detail);line-height:1.75;color:var(--text-3);margin-top:8px;overflow-wrap:anywhere;max-width:80ch}
.center-summary{font-size:var(--type-body);line-height:1.85;color:var(--text-2);margin-top:15px;overflow-wrap:anywhere;max-width:72ch}
.translation-note{display:inline-block;margin-top:7px;color:var(--text-3);font-size:var(--type-meta)}
.center-card-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;color:var(--text-3);font-size:var(--type-meta);margin:21px 0 20px}
.center-card-meta>a{margin-left:auto;display:flex;align-items:center;gap:9px;color:var(--text-2);font-size:var(--type-meta)}
.center-card-meta>a:hover{color:var(--accent)}
.center-card-meta>a span{transition:transform .2s}
.center-card-meta>a:hover span{transform:translate(2px,-2px)}
.read-mark{font-size:var(--type-meta);border:1px solid var(--line);border-radius:4px;padding:0 5px}
.evidence-details{border-top:1px solid var(--line);margin:0 -30px;padding:0 30px;background:color-mix(in srgb,var(--surface) 32%,transparent);border-radius:0 0 22px 22px}
.evidence-details>summary{list-style:none;display:flex;align-items:center;gap:8px;cursor:pointer;padding:15px 0;color:var(--text-2);font-size:var(--type-meta)}
.evidence-details>summary::-webkit-details-marker{display:none}
.evidence-symbol{font-size:16px;color:var(--text-3)}
.evidence-summary-note{font-size:var(--type-meta);color:var(--text-3);margin-left:8px}
.evidence-chevron{margin-left:auto;font-size:16px;transition:transform .2s}
.evidence-details[open] .evidence-chevron{transform:rotate(180deg)}
.evidence-body{padding:8px 0 24px;animation:none}
.evidence-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:3px 0 15px}
.evidence-heading strong{font-size:17px;font-weight:500;letter-spacing:-.03em}
.evidence-heading a{font-size:var(--type-meta);color:var(--accent)}
.evidence-facts{display:grid;gap:12px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:20px}
.evidence-facts>div{display:grid;grid-template-columns:65px minmax(0,1fr);gap:16px;font-size:var(--type-detail);line-height:1.85}
.evidence-facts dt{color:var(--text-3)}
.evidence-facts dd{color:var(--text-2);overflow-wrap:anywhere}
.evidence-facts a{color:var(--accent)}
.original-material{padding:23px 0 18px;border-bottom:1px solid var(--line)}
.original-material>span{font-size:var(--type-meta);letter-spacing:.03em;color:var(--text-3);display:block;margin-bottom:7px}
.original-material>p{font-size:var(--type-detail);color:var(--text-2);line-height:1.8;overflow-wrap:anywhere;margin-bottom:18px;max-width:80ch}
.original-material blockquote{font-size:var(--type-detail);color:var(--text-2);line-height:1.85;border-left:2px solid var(--line-strong);padding-left:13px;overflow-wrap:anywhere;max-width:80ch}
.evidence-pending{padding-top:20px}
.evidence-pending strong{font-size:12px;font-weight:500}
.evidence-pending ul{display:grid;grid-template-columns:1fr 1fr;gap:8px 22px;list-style:none;margin:13px 0;font-size:var(--type-detail);color:var(--text-2)}
.evidence-pending li::before{content:'○';color:var(--text-3);margin-right:7px;font-size:10px}
.evidence-pending p,.evidence-disclaimer{font-size:var(--type-meta);color:var(--text-3);line-height:1.85;max-width:80ch}
.evidence-disclaimer{margin-top:16px}
.center-pagination{text-align:center;margin-top:30px}
#pageCount{font-size:11px;color:var(--text-3);margin-bottom:17px}
#loadMore{font-size:12px;height:46px;padding-inline:30px}
.center-empty{text-align:center;padding:60px 24px;border:1px solid var(--line);border-radius:22px;margin-top:25px}
.center-empty>span{display:block;font-size:36px;color:var(--text-3);margin-bottom:15px}
.center-empty h3{font-size:19px;font-weight:500;letter-spacing:-.03em}
.center-empty p{font-size:12px;line-height:1.9;color:var(--text-3);max-width:370px;margin:15px auto 24px}
.center-empty button{font-size:11px;height:42px}
.reading-tools{position:sticky;top:116px;padding-top:21px}
.reading-tool-card{display:block}
.reading-tool-art{height:206px;display:grid;place-items:center;position:relative;isolation:isolate;margin-bottom:29px;perspective:800px}
.reading-tool-art::before{content:'';position:absolute;inset:12% 4%;z-index:-1;background:radial-gradient(ellipse,#8eaeef20,transparent 67%)}
.reading-tool-sheet{width:150px;padding:18px 16px 16px;border:1px solid var(--line-strong);border-radius:4px 12px 12px 4px;background:linear-gradient(135deg,var(--surface),var(--bg-2));transform:rotate(-8deg) rotateY(-10deg);box-shadow:6px 6px 0 -1px var(--bg-2),7px 7px 0 var(--line),10px 18px 28px -17px #52688d45;transition:transform .4s var(--ease),box-shadow .4s}
.reading-tool-sheet>span{display:block;font:5px var(--font-mono);letter-spacing:.07em;color:var(--text-3)}
.reading-tool-sheet svg{display:block;width:100%;height:78px;margin:8px 0 4px;color:var(--accent);opacity:.8}
.reading-tool-sheet strong{display:block;font-size:19px;line-height:1.1;font-weight:500;letter-spacing:-.05em;margin-bottom:18px}
.reading-tool-card:hover .reading-tool-sheet{transform:rotate(-3deg) rotateY(0);box-shadow:6px 6px 0 -1px var(--bg-2),7px 7px 0 var(--line),10px 22px 32px -17px #52688d55}
.reading-tools .section-eyebrow{font-size:7px;letter-spacing:.13em;margin-bottom:16px}
.reading-tools h2{font-size:29px;line-height:1.45;font-weight:480;letter-spacing:-.05em}
.reading-tool-card>p{font-size:12px;color:var(--text-2);margin:18px 0 8px}
.reading-tool-description{display:block;font-size:11px;line-height:1.9;color:var(--text-3)}
.reading-tool-link{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);margin-top:24px;padding-top:20px;font-size:11px;color:var(--text-2)}
.reading-tool-link>span{font-size:18px;transition:transform .2s}
.reading-tool-card:hover .reading-tool-link>span{transform:translate(2px,-2px)}
.center-footer{background:var(--bg-2);padding:32px 0}
.center-footer>.container{display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:11px;color:var(--text-3)}
.center-footer a:first-child{font-size:15px;color:var(--text);font-weight:500}
@media(max-width:1100px){.center-content{grid-template-columns:minmax(0,1fr) 215px;gap:34px}.center-card{padding:23px 24px 0}.evidence-details{margin-inline:-24px;padding-inline:24px}.center-card h3{font-size:20px}.center-views button{font-size:12px;padding-inline:15px}.center-search{max-width:330px}.center-card-source{gap:7px}}
@media(max-width:900px){.center-home-link{display:block}.center-content{grid-template-columns:1fr}.reading-tools{display:none}.center-intro.frontier{height:410px}.center-intro h1{font-size:clamp(49px,calc(24.384615px + 3.846154vw),59px)}.center-search{max-width:320px}.center-controls{padding-inline:22px}.center-categories{gap:1px}.center-categories button{padding-inline:11px}}
@media(max-width:640px){
  .center-page .header .container{gap:8px}.center-page .header-actions{gap:4px}.center-page .icon-btn.theme{display:grid}.center-page .sub-cta{margin-left:2px}.center-home-link{font-size:10px}
  .center-main{padding-bottom:48px}.center-intro.frontier{height:390px;padding:24px 20px 66px}.center-intro .frontier-eyebrow{font-size:8px;margin-bottom:17px;gap:8px}.center-intro .frontier-spark{font-size:22px}.center-intro h1{font-size:49px}.center-intro .frontier-description{font-size:12px;line-height:1.85;margin-top:14px}.center-intro .frontier-actions{margin-top:21px;gap:8px}.center-intro .frontier-button{font-size:11px;height:43px;padding-inline:19px;gap:13px}.center-intro .frontier-halo{inset:10% 0 16%}.center-intro .frontier-bottom{bottom:26px}.center-hero-label{font-size:7px}.center-controls{scroll-margin-top:80px;padding-inline:17px;border-radius:21px;margin-top:-7px}
  .center-toolbar{flex-direction:column;align-items:stretch;gap:18px;padding:20px 0}.center-views{gap:9px}.center-views button{height:39px;padding-inline:15px;font-size:12px}.center-views button>span{font-size:9px}.center-search{max-width:none;height:44px;padding-inline:15px}.center-search input{font-size:var(--type-input)}.center-search button{font-size:11px}
  .center-categories{margin-inline:0;padding:0 0 17px;gap:3px;overscroll-behavior-x:contain}.center-categories button{font-size:var(--type-meta);padding:7px 12px}.center-filter-bottom{padding:13px 0;gap:12px}.center-toggles{gap:17px}.center-toggles label{font-size:var(--type-meta);gap:7px}.center-toggles input{width:15px;height:15px}.center-sort{display:none}#refreshNews{font-size:10px;gap:5px}.center-feedback{padding:15px 2px 16px;font-size:var(--type-meta);line-height:1.85}
  .center-list-heading{padding-top:15px;gap:15px}.center-list-heading h2{font-size:20px}#resultCount{font-size:9px}.news-day{margin-top:24px;font-size:9px;gap:13px}.news-day>span:last-child{font-size:6px}.center-card{padding:20px 20px 0;border-radius:18px;margin-bottom:16px}.center-card-top{gap:10px;align-items:flex-start;margin-bottom:14px}.center-card-source{font-size:var(--type-meta);gap:6px}.source-initial{width:21px;height:21px;border-radius:6px;font-size:11px}.field-tag{font-size:var(--type-meta);padding-left:7px}.center-ai{font-size:var(--type-meta);padding:1px 5px}.save-article{padding:5px 7px;min-width:32px;min-height:32px}.save-article>span{display:none}.save-article svg{width:16px;height:16px}
  .center-card h3{font-size:19px;line-height:1.65}.center-original-title{font-size:var(--type-detail);line-height:1.75;margin-top:9px}.center-summary{font-size:var(--type-body);line-height:1.85;margin-top:13px}.translation-note{font-size:var(--type-meta)}.center-card-meta{font-size:var(--type-meta);margin:18px 0;gap:8px}.center-card-meta>a{font-size:var(--type-meta);gap:7px}.read-mark{font-size:var(--type-meta)}
  .evidence-details{margin-inline:-20px;padding-inline:20px;border-radius:0 0 17px 17px}.evidence-details>summary{font-size:var(--type-meta);gap:6px;padding:14px 0}.evidence-summary-note{font-size:var(--type-meta);margin-left:3px}.evidence-symbol{font-size:14px}.evidence-heading strong{font-size:17px}.evidence-heading a{font-size:var(--type-meta)}.evidence-facts{padding:16px;gap:13px}.evidence-facts>div{grid-template-columns:53px minmax(0,1fr);gap:12px;font-size:var(--type-detail)}.evidence-body{padding-bottom:20px}.original-material{padding-top:20px}.original-material>span{font-size:var(--type-meta)}.original-material>p,.original-material blockquote{font-size:var(--type-detail);line-height:1.85}.evidence-pending ul{grid-template-columns:1fr;gap:8px;font-size:var(--type-detail)}.evidence-pending strong{font-size:var(--type-detail)}.evidence-pending p,.evidence-disclaimer{font-size:var(--type-meta);line-height:1.85}
  .center-empty{padding:38px 20px}.center-empty h3{font-size:18px}.center-empty p{font-size:11px}.center-pagination{margin-top:25px}#pageCount{font-size:10px}#loadMore{font-size:11px}.center-footer>.container{flex-wrap:wrap;font-size:9px;gap:17px}.center-footer a:first-child{flex-basis:100%;font-size:16px}
}
@media(max-width:374px){.center-home-link{display:none}.center-intro.frontier{height:370px}.center-intro h1{font-size:43px}.center-controls{padding-inline:13px}.center-card{padding:18px 16px 0}.evidence-details{margin-inline:-16px;padding-inline:16px}.evidence-summary-note{font-size:var(--type-meta);max-width:144px}.center-card h3{font-size:18px}.center-card-source>.field-tag{border:0;padding-left:0}.center-card-meta>a{font-size:var(--type-meta)}.center-views button{font-size:11px;padding-inline:12px}}
@media(prefers-reduced-motion:reduce){.center-page *,.center-page *::before,.center-page *::after{scroll-behavior:auto!important;transition:none!important}.reading-tool-card:hover .reading-tool-sheet{transform:rotate(-8deg) rotateY(-10deg)}.center-card-meta>a:hover span,.reading-tool-card:hover .reading-tool-link>span,.save-article:hover svg{transform:none}}