/* Figure 2 palette: structure blue, scene purple, instance green, and RL orange. */
:root{--ink:#26334e;--muted:#65708a;--teal:#5b71ae;--line:#ccd7e8;--soft:#eaf1fc;--blue:#579cda;--purple:#9270b3;--green:#94b976;--orange:#ed904e}
body{background:#edf3fb}
::selection{background:#d8c6ed;color:#26334e}
.site-header{background:#f0f4fbef;border-color:#d1dcec}
.header-inner{height:64px;width:min(1320px,calc(100% - 64px))}
nav a{padding:19px 0}
nav a[aria-current]:after{background:var(--purple)}
.header-paper span{color:var(--purple)}

/* The video wall contains 12 scenes in one stream for smooth playback. */
.hero{position:relative;isolation:isolate;overflow:hidden;min-height:700px;display:grid;align-items:center;text-align:center;background:#dce7f4;padding:0}
.hero-wall{position:absolute;inset:0;z-index:-2}
.hero-wall video{width:100%;height:100%;object-fit:cover;border-radius:0;opacity:.85}
.hero:after{content:'';position:absolute;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(180deg,#dfeafb30 0%,#ebedfa18 65%,#f0eaf8 100%)}
.hero-content{position:relative;padding:75px 25px 85px;width:min(1060px,100%)}
.hero-content:before{content:'';position:absolute;inset:-45px -110px;z-index:-1;background:radial-gradient(ellipse at center,#f2f2fcf7 0%,#eef1fced 35%,#eaf0fbc9 50%,#eaf0fb40 65%,transparent 76%)}
.hero .eyebrow{color:#496494;letter-spacing:2.1px}
.hero h1{font-size:clamp(76px,8.6vw,116px);line-height:1.2;margin:12px 0 17px;color:#2e527b}
.hero h1 em{color:#8160a2}
.title-hyphen{color:#a3b889}
.paper-title{font-size:clamp(20px,2.15vw,28px);font-weight:500;max-width:920px}
.hero-actions{gap:13px;margin-top:31px}
.button{background:#f7f5fcbd;border-color:#b8b3d0;padding:10px 22px}
.button:hover{background:#fff}
.button.primary{background:#ec985a;color:#382820;border-color:#d98647}
.button.primary:hover{background:#f3ac76;border-color:#d98647}
.hero-toggle{bottom:27px;right:32px;border:1px solid #bdc6db;border-radius:4px;background:#edf2fbd9;color:#354669;padding:5px 11px;font-size:12px}

/* Flat chapters replace numbered headings, extra labels, and boxed controls. */
.section.wrap{width:100%;margin:0;padding:65px max(40px,calc((100% - var(--max))/2));border:0}
.section-heading{display:block;margin:0 0 31px;text-align:center}
.section-heading h2{margin:0;font-size:clamp(28px,3vw,36px)}
.section-heading p{font-size:16px;margin:10px auto 0;max-width:780px}
#memory{background:#f0eaf8;--teal:#805aa4}
#memory h2{color:#735396}
.instance-block{--teal:#5b7943}
.instance-block h3{color:#52783a}
.tinted-section{background:#fff0e4}
#rl{--teal:#a5602e}
#rl h2{color:#935729}
#scenes{background:#eaf2fd;--teal:#3975ac}
#scenes h2{color:#356fa4}
#control{background:#edf4e5;--teal:#54763a}
#control h2{color:#54763a}
.dark-section{background:#e5edf9;color:var(--ink)}
#long-horizon{--teal:#506ca2}
#long-horizon h2{color:#45649a}
.dark-section .section-heading p:last-child{color:var(--muted)}
#method{background:#f6f5fa}
.demo-block+.demo-block{margin-top:42px}
.demo-top{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:17px}
.demo-top .demo-heading{margin:0}
.demo-heading p{font-size:14px;margin-top:5px;max-width:710px}
.switcher{gap:16px;margin-bottom:17px;flex-shrink:0}
.demo-top .switcher{margin:0}
.switcher button{background:none;border:0;border-bottom:2px solid transparent;border-radius:0;padding:6px 0;color:var(--muted);font-size:13px;white-space:nowrap}
.switcher button:hover{background:none;color:var(--teal)}
.switcher button.selected{background:none;border-color:var(--teal);color:var(--teal)}
.comparison-labels{margin-bottom:7px}
.comparison-labels.three span{border:0;padding-bottom:0}
.sync-controls{padding:10px 0 0;margin-top:2px;background:none;border:0;border-radius:0}
.sync-play{background:#627f4b}
.sync-seek{accent-color:#749653}
.rl-columns{gap:28px}
.rl-columns .demo-top{align-items:flex-start;gap:12px}
.rl-columns .demo-heading p{max-width:270px}
.rl-columns .switcher{gap:12px;padding-top:2px}
.rl-columns .switcher button{font-size:12px}
.subsection-title{margin-bottom:18px;font-size:21px}
.gallery-grid+.subsection-title{margin-top:32px}
.gallery-grid{row-gap:23px}
.gallery-grid figcaption{display:block;margin-top:7px;font-size:14px;color:#56647b}
.long-player video{border:0}
.long-player figcaption{color:var(--muted);font-size:13px;margin-top:9px}
.sequence-picker{gap:13px;margin-top:21px}
.sequence-picker button{background:none;border:0;border-bottom:3px solid transparent;border-radius:0;padding:0 0 8px;color:var(--muted)}
.sequence-picker button:hover{background:none;border-color:#a2b4d6}
.sequence-picker button.selected{background:none;border-color:#677eae;color:var(--ink)}
.sequence-picker b{color:#7588a7}
.sequence-picker small{color:#75819a}
.memory-types>div{border-left:0;border-top:2px solid var(--blue);padding:12px 0 0}
.memory-types>div:nth-child(2){border-color:var(--purple)}
.memory-types>div:nth-child(3){border-color:var(--green)}
.memory-types span{color:var(--muted)}
.ours-row{background:#e9e1f3;color:#71518e}
.text-link{border-color:#a7b7d1}
.site-footer{padding-block:30px}
.site-footer p span{color:#7c8aa0}
@media(min-width:1700px){.hero{min-height:780px}}
@media(max-width:1100px){.rl-columns .demo-top{display:block}.rl-columns .switcher{margin-top:10px}}
@media(max-width:760px){
 .header-inner{width:calc(100% - 40px);height:auto;min-height:60px}nav{border-color:#dce2ef}nav a{padding:8px 0}.header-inner>.wordmark,.header-paper{margin-block:13px}
 .hero{min-height:650px;padding:0}.hero-content{width:100%;padding:70px 20px}.hero-content:before{inset:-80px -80px;background:radial-gradient(ellipse at center,#eff0fdfc 0%,#eff0fdee 34%,#edf0fbbb 51%,#edf0fb20 72%,transparent 80%)}.hero h1{font-size:82px;letter-spacing:-4px}.hero h1 em{letter-spacing:-5px}.hero .eyebrow{font-size:11px;letter-spacing:1.7px}.paper-title{font-size:22px;line-height:1.6}.hero-actions{gap:10px;margin-top:27px}.button{padding:10px 17px;font-size:13px}.hero-toggle{font-size:11px;bottom:22px;right:20px}
 .section.wrap{padding:46px 20px}.section-heading{margin-bottom:26px}.section-heading h2{font-size:28px}.section-heading p{font-size:14px;margin-top:8px}.demo-top{display:block;margin-bottom:15px}.demo-top .switcher{margin-top:12px}.demo-block+.demo-block{margin-top:34px}.switcher{gap:18px}.switcher button{padding:6px 0;font-size:13px}.rl-columns .switcher button{padding:6px 0;font-size:12px}.gallery-grid{row-gap:20px}.sequence-picker{gap:10px}.site-footer{padding-block:25px}
}
@media(max-width:600px){.rl-columns{grid-template-columns:1fr;gap:30px}.rl-columns .demo-heading p{min-height:0}.rl-columns .demo-top{display:flex;align-items:flex-end}.rl-columns .switcher{margin:0}.rl-columns .demo-heading p{max-width:210px}.rl-columns video{max-height:none}}
@media(max-width:420px){.header-inner{width:calc(100% - 32px)}.hero h1{font-size:74px}.hero{min-height:600px}.hero-content{padding-inline:16px}.paper-title{font-size:20px}.section.wrap{padding-inline:16px}.section-heading h2{font-size:26px}.rl-columns .demo-top{display:block}.rl-columns .switcher{margin-top:10px}}

/* Let the footage play first, then bring the project name into the same shot. */
.hero-content{transition:opacity 1.4s ease,transform 1.4s ease,visibility 1.4s}
.hero:after,.hero-wall video{transition:opacity 1.8s ease}
.js .hero:not(.hero-ready) .hero-content{opacity:0;visibility:hidden;transform:translateY(16px);pointer-events:none}
.js .hero:not(.hero-ready):after{opacity:0}
.js .hero:not(.hero-ready) .hero-wall video{opacity:1}
.example-stack{display:grid;gap:26px}
.rl-example-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.rl-example-grid video{max-height:none}
.long-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px 20px}
.long-grid figcaption{display:flex;justify-content:space-between;gap:10px}
.long-grid figcaption span:last-child{font-variant-numeric:tabular-nums}
.scroll-reveal{opacity:0;transform:translateY(22px);transition:opacity .65s ease,transform .65s ease}
.scroll-reveal.is-visible{opacity:1;transform:none}
@media(max-width:760px){.long-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 13px}.rl-columns{grid-template-columns:1fr;gap:32px}.rl-columns .demo-heading p{max-width:none;min-height:0}.example-stack{gap:22px}.long-grid figcaption{display:block}.long-grid figcaption span:last-child{display:block;font-size:11px}}
@media(prefers-reduced-motion:reduce){.scroll-reveal{opacity:1;transform:none}.js .hero:not(.hero-ready) .hero-content{opacity:1;visibility:visible;transform:none;pointer-events:auto}}

/* Exhibition-wall hero: the wall from the overview video, with the title revealed once it settles. */
.hero{min-height:0;height:clamp(560px,56.25vw,calc(100vh - 64px))}
.hero:after{background:radial-gradient(ellipse 55% 42% at 50% 50%,rgba(239,241,252,.86) 0%,rgba(239,241,252,.83) 75%,rgba(239,241,252,.62) 105%,rgba(239,241,252,.45) 170%)}
.hero-content:before{display:none}
.hero-toggle{right:auto;left:32px}
.film-button{position:absolute;right:32px;bottom:24px;z-index:2;display:inline-flex;align-items:center;gap:10px;padding:10px 20px 10px 13px;border-radius:999px;border:1px solid #b8b3d0;background:#f7f5fce8;color:var(--ink);font-size:15px;font-weight:600;box-shadow:0 6px 24px #2e3f5c22;backdrop-filter:blur(8px);transition:opacity 1.2s ease,visibility 1.2s,transform .2s,background .2s}
.film-button:hover{background:#fff;transform:translateY(-2px)}
.film-button svg{width:26px;height:26px}
.film-button circle{fill:none;stroke:#8160a2;stroke-width:1.5}
.film-button path{fill:#8160a2}
.js .hero:not(.hero-ready) .film-button{opacity:0;visibility:hidden}
.film-dialog{padding:0;border:0;background:transparent;width:min(1280px,94vw);max-width:none;overflow:visible}
.film-dialog::backdrop{background:rgba(22,30,48,.84)}
.film-frame{position:relative}
.film-frame video{border-radius:8px;background:#000}
.film-close{position:absolute;top:-46px;right:-4px;width:40px;height:40px;border:0;border-radius:50%;background:transparent;color:#fff;font-size:32px;line-height:1}
.film-close:hover{background:#ffffff1f}

/* Highlight rings and captions that follow the video clock. */
.annotated{position:relative}
.annot-layer{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.annot-ring{stroke-width:3px;opacity:0}
.annot-caption{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-content:start;gap:23px;height:58px;overflow:hidden;margin-top:12px;font-size:17px;font-weight:600;line-height:1.5;text-align:center;opacity:0;transition:opacity .4s ease}
.annot-caption.showing{opacity:1}
.annot-caption .cap-shared{grid-column:1/-1;color:var(--ink)}
.annot-caption .cap-shared:empty{display:none}
.annot-caption .cap-left{color:#c0602a}
.annot-caption .cap-right{color:#4f7f31}
.rl-example-grid figcaption{text-align:center;margin-top:9px;font-size:14px;color:var(--muted)}

/* Results and method chapters, always expanded. */
#results{background:#f2f5fb}
.results-section .subsection-title{color:#45649a}
.results-section .table-scroll+.subsection-title{margin-top:46px}
.table-note{font-size:14px;margin:-8px 0 14px;max-width:900px}
.results-section table{background:#fff;border-radius:6px}
.results-section thead th{text-align:right;vertical-align:bottom}
.results-section .group-row th{text-align:center;font-size:12px;letter-spacing:.6px;text-transform:uppercase;color:var(--muted);border-bottom:1px solid #d5ddeb}
.results-section .group-row th[rowspan]{text-align:left;text-transform:none;letter-spacing:0;font-size:13px;color:var(--ink)}
.results-section .section-row th{text-align:left;font-size:12px;letter-spacing:.6px;text-transform:uppercase;color:#7585a0;background:#f6f8fc;padding-block:7px}
.results-section .reference-row{color:#7c889c}
.method-subtitle{margin-top:46px;text-align:center;color:#935729}
.method-text{max-width:820px;margin:0 auto;text-align:center;font-size:15px}
@media(max-width:760px){.hero{height:auto;min-height:650px}.film-button{right:16px;bottom:16px;font-size:13px;padding:8px 15px 8px 10px}.film-button svg{width:22px;height:22px}.hero-toggle{left:16px;bottom:22px}.annot-caption{font-size:15px}}
@media(max-width:600px){.annot-caption{grid-template-columns:1fr;gap:4px;text-align:left}.annot-caption .cap-left:not(:empty):before{content:'Without memory: ';color:var(--muted);font-weight:500}.annot-caption .cap-right:not(:empty):before{content:'WAM-Sim: ';color:var(--muted);font-weight:500}}

/* Capability-oriented chapters, following the overview video. */
.section-heading .eyebrow{font-size:12px;margin:0 auto 8px;text-align:center;color:var(--teal);letter-spacing:2px}
.capabilities{background:#f6f8fc}
.capabilities.section.wrap{padding-block:46px}
.cap-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.cap-card{display:block;text-align:center;padding:22px 18px 20px;border-radius:8px;transition:background .2s,transform .2s}
.cap-card:hover{background:#fff;transform:translateY(-2px)}
.cap-num{font-family:var(--heading);font-weight:650;font-size:15px;color:var(--teal)}
.cap-card:nth-child(1){--teal:#735396}.cap-card:nth-child(2){--teal:#52783a}.cap-card:nth-child(3){--teal:#45649a}
.cap-card h2{font-size:clamp(20px,1.9vw,24px);text-wrap:balance;margin:6px 0 8px;letter-spacing:-.6px;color:var(--ink)}
.cap-card p{font-size:15px;margin:0}
.cap-card:after{content:'';display:block;width:44px;height:2px;margin:14px auto 0;background:var(--teal)}
#scene{background:#f0eaf8;--teal:#805aa4}
#scene h2{color:#735396}
#identity{background:#eef4ea;--teal:#5b7943}
#identity h2{color:#52783a}
#long-horizon{background:#e5edf9;--teal:#506ca2}
#long-horizon h2{color:#45649a}
#traffic{background:#fff0e4;--teal:#a5602e}
#traffic h2{color:#935729}
#generalization{background:#eaf2fd;--teal:#3975ac}
#generalization h2{color:#356fa4}
.three{grid-template-columns:repeat(3,minmax(0,1fr))}

/* Long-horizon player: two enlarged rollouts above, four smaller ones below. */
.lh-player{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-template-areas:"m1 m1 m2 m2" "s1 s2 s3 s4";gap:26px 18px}
.lh-item[data-slot=m1]{grid-area:m1}.lh-item[data-slot=m2]{grid-area:m2}
.lh-item[data-slot=s1]{grid-area:s1}.lh-item[data-slot=s2]{grid-area:s2}.lh-item[data-slot=s3]{grid-area:s3}.lh-item[data-slot=s4]{grid-area:s4}
.lh-item{position:relative;min-width:0;will-change:transform}
.lh-media{position:relative}
.lh-pick{position:absolute;inset:0;width:100%;height:100%;border:0;padding:0;background:transparent;border-radius:5px;cursor:pointer;display:none}
.lh-item[data-slot^=s] .lh-pick{display:block}
.lh-item[data-slot^=s] .lh-pick:hover,.lh-item[data-slot^=s] .lh-pick:focus-visible{box-shadow:inset 0 0 0 3px #506ca2;background:#ffffff1a}
.lh-item[data-slot^=s] .lh-pick:after{content:'Move up';position:absolute;right:8px;bottom:8px;padding:2px 9px;border-radius:999px;background:#f7f9fde6;color:#45649a;font-size:12px;font-weight:600;opacity:0;transition:opacity .2s}
.lh-item[data-slot^=s] .lh-pick:hover:after,.lh-item[data-slot^=s] .lh-pick:focus-visible:after{opacity:1}
.lh-item figcaption{display:flex;justify-content:space-between;gap:10px;margin-top:8px;font-size:14px}
.lh-item figcaption span:first-child{color:var(--ink);font-weight:500}
.lh-item figcaption span:last-child{font-variant-numeric:tabular-nums}
.lh-item[data-slot^=s] figcaption{font-size:12.5px;margin-top:6px}
.lh-item.lh-next:before{content:'Moves down next';position:absolute;z-index:2;left:10px;top:10px;padding:2px 9px;border-radius:999px;background:#f7f9fde6;color:#45649a;font-size:12px;font-weight:600;opacity:0;transition:opacity .2s;pointer-events:none}
.lh-player.picking .lh-item.lh-next:before{opacity:1}
.lh-hint{text-align:center}

/* Results tables: compact and centered rather than full width. */
.results-section .subsection-title,.results-section .table-note{text-align:center;margin-inline:auto}
.results-section .table-scroll{max-width:960px;margin:0 auto}
.results-section table{width:auto;margin:0 auto;font-size:13.5px}
.results-section th,.results-section td{padding:9px 12px}
@media(max-width:1000px){.three{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.cap-grid{grid-template-columns:1fr;gap:6px}.capabilities.section.wrap{padding-block:30px}.cap-card{padding:14px 10px}
 .lh-player{grid-template-columns:repeat(2,minmax(0,1fr));grid-template-areas:"m1 m1" "m2 m2" "s1 s2" "s3 s4";gap:18px 12px}
 .three{grid-template-columns:1fr}}

.lh-player{row-gap:18px}
@media(max-width:600px){.annot-caption{height:auto;min-height:64px}}

/* No top navigation bar: the hero opens the page. */
html{scroll-padding-top:0}
.hero{height:clamp(600px,56.25vw,100vh)}
.affiliations{display:flex;justify-content:center;flex-wrap:wrap;gap:6px 34px;margin:20px 0 0;font-size:16px;color:#4d5a76}
.authors-toggle{margin-top:10px;border:0;background:none;color:#5b71ae;font-size:14px;font-weight:600;padding:4px 8px;border-radius:4px}
.authors-toggle:hover{background:#ffffff8c}
.authors-toggle span{display:inline-block;width:12px}
.author-list{margin:6px auto 0;max-width:820px}
.author-list p{font-size:15px;line-height:1.8;color:var(--ink)}
.author-list sup{font-size:.7em;margin-left:1px}
.author-list .mail-icon,.author-notes .mail-icon{width:12px;height:9px;vertical-align:baseline}
.mail-icon rect,.mail-icon path{fill:none;stroke:currentColor;stroke-width:1.3;stroke-linejoin:round}
.author-list p.author-notes{font-size:12.5px;color:var(--muted);margin-top:2px}
.author-notes .sep{display:inline-block;width:18px}
.hero-actions{margin-top:24px}
@media(max-width:760px){.hero{height:auto;min-height:100svh}.affiliations{font-size:14px;gap:2px 20px}.author-list p{font-size:13.5px}}

/* Results tables: plain, booktabs-like rules and tabular figures in a neutral sans for the numbers. */
.results-section table{background:transparent;border-collapse:collapse;font-size:14px;border-top:1.5px solid #3c4762;border-bottom:1.5px solid #3c4762;border-radius:0}
.results-section th,.results-section td{border-bottom:0;padding:7px 14px;text-align:center}
.results-section td{font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-variant-numeric:tabular-nums lining-nums;color:#2b3550}
.results-section thead th{background:transparent;font-weight:600;font-size:13.5px;color:var(--ink);text-align:center;vertical-align:bottom}
.results-section thead tr:last-child th{border-bottom:1px solid #3c4762}
.results-section .group-row th{text-transform:none;letter-spacing:0;font-size:13.5px;color:var(--ink);border-bottom:1px solid #b9c3d6}
.results-section .group-row th[rowspan]{text-align:left;font-size:13.5px;border-bottom:1px solid #3c4762}
.results-section tbody th{text-align:left;font-weight:500;color:var(--ink)}
.results-section .section-row th{text-transform:none;letter-spacing:0;font-size:13px;font-weight:500;font-style:italic;color:var(--muted);background:transparent;padding-top:10px;border-top:1px solid #d5dce8}
.results-section .reference-row td,.results-section .reference-row th{color:#7c889c}
.results-section .ours-row{background:#eef1f8;color:inherit}
.results-section .ours-row th,.results-section .ours-row td{font-weight:700;color:#26334e}
.results-section .ours-row th,.results-section .ours-row td{border-top:1px solid #d5dce8}
.results-section .table-scroll{max-width:1120px}
/* Separate rules under each metric group; best values in bold; our row marked by colour only. */
.results-section .group-row th[scope=colgroup]{border-bottom:0;padding:7px 6px 0}
.results-section .grp{display:block;border-bottom:1px solid #8f9bb3;padding:0 6px 5px}
.results-section td.best{font-weight:700}
.results-section .ours-row{background:transparent}
.results-section .ours-row th,.results-section .ours-row td{font-weight:400;color:#7a4fa6}
.results-section .ours-row td.best{font-weight:700}
.results-section .ours-row th{font-weight:600}

/* Long horizon: the four rollouts from the overview video, 2x2. */
.lh-grid{gap:20px}
/* Scene labels drawn inside the video, matching the overview video's chips. */
.labeled{position:relative}
.video-chip{position:absolute;left:1.9%;bottom:3.2%;padding:.15em .75em;border-radius:5px;background:#f7f9fde6;color:var(--ink);font-size:clamp(11px,1.15vw,15px);font-weight:500;line-height:1.5;pointer-events:none;transition:opacity .2s}
.labeled:hover .video-chip{opacity:0}
.labeled.is-paused .video-chip{opacity:0}
/* "Read the paper" is a placeholder until the paper link is public: plain buttons with no action. */
button.button,button.text-link{font:inherit;color:inherit;cursor:default}
.hero-actions button.button{background:#f7f5fcbd;border:1px solid #b8b3d0;font-size:14px;font-weight:600;color:var(--ink)}
.site-footer button.text-link{background:none;border:0;border-bottom:1px solid #a7b7d1;padding:5px 0;font-size:13px;font-weight:600;color:var(--teal)}

/* Hero link row: Video, Demos, Paper, Code, Hugging Face. */
.hero-actions{flex-wrap:wrap;gap:10px}
.hero-actions .button{gap:7px;padding:9px 18px 9px 14px}
.hero-actions .button svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.hero-actions .button svg .fill{fill:currentColor;stroke:none}
.hero-actions button.button.film-open{background:#ec985a;color:#382820;border-color:#d98647;cursor:pointer}
.hero-actions button.button.film-open:hover{background:#f3ac76}
.hf-icon{font-size:16px;line-height:1}
/* Hint at the foot of the hero, shown with the title. */
.scroll-hint{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);z-index:2;display:inline-flex;flex-direction:column;align-items:center;gap:2px;font-size:13px;color:#6b7690;letter-spacing:.2px;transition:opacity 1.2s ease,visibility 1.2s}
.scroll-hint svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;animation:hint-bob 2.2s ease-in-out infinite}
.scroll-hint:hover{color:var(--ink)}
@keyframes hint-bob{0%,100%{transform:translateY(0)}50%{transform:translateY(4px)}}
.js .hero:not(.hero-ready) .scroll-hint{opacity:0;visibility:hidden}
@media(max-width:760px){.scroll-hint{font-size:12px;bottom:56px}}
.scroll-hint{font-size:14px;color:#56627d;bottom:26px}
/* Keep the title block exactly where it sat before the author button was removed
   (that button and its margin took 42px of the centred block). */
.hero-content{padding-bottom:calc(85px + 42px)}
.scroll-hint{bottom:10px;gap:0;font-size:14px;color:#4f5b76}
.scroll-hint svg{width:24px;height:24px;stroke-width:2;color:#4f5b76}
@media(max-width:760px){.hero-content{padding-bottom:calc(70px + 42px)}.scroll-hint{bottom:48px}}