:root{--rr-ink:#172033;--rr-muted:#5f6877;--rr-line:#dce1e7;--rr-paper:#fbfaf7;--rr-white:#fff;--rr-soft:#f1f4f5;--rr-accent:#e65f3c;--rr-accent-dark:#bd472b;--rr-gold:#f2bf68;--rr-blue:#315f77;--rr-radius:18px;--rr-shadow:0 18px 48px rgba(22,32,51,.09)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--rr-paper);color:var(--rr-ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:17px;line-height:1.68}img{max-width:100%;height:auto}a{color:var(--rr-blue);text-underline-offset:.18em}a:hover{color:var(--rr-accent)}button,input,select,textarea{font:inherit}h1,h2,h3,h4{margin-top:0;line-height:1.12;letter-spacing:-.025em}h1{font-size:clamp(2.4rem,6vw,5.5rem)}h2{font-size:clamp(1.75rem,3vw,2.75rem)}h3{font-size:1.25rem}.screen-reader-text{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.screen-reader-text:focus{z-index:100000;top:6px;left:6px;width:auto;height:auto;padding:14px 18px;clip:auto;background:#fff;color:#000}.rrt-container{width:min(1180px,calc(100% - 2rem));margin-inline:auto}.rrt-container.narrow{width:min(820px,calc(100% - 2rem))}.rrt-section{padding:clamp(3.5rem,7vw,7rem) 0}.rrt-soft-section{background:var(--rr-soft)}.rrt-kicker{margin:0 0 .65rem;color:var(--rr-accent);font-size:.78rem;font-weight:850;letter-spacing:.12em;text-transform:uppercase}.rrt-chip{display:inline-flex;padding:.28rem .6rem;border-radius:999px;background:#eef3f5;color:#355569;font-size:.74rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em}.rrt-button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:.72rem 1.05rem;border:1px solid var(--rr-line);border-radius:11px;background:#fff;color:var(--rr-ink);font-weight:800;text-decoration:none}.rrt-button:hover{border-color:var(--rr-ink);color:var(--rr-ink)}.rrt-button-primary{background:var(--rr-accent);border-color:var(--rr-accent);color:#fff}.rrt-button-primary:hover{background:var(--rr-accent-dark);border-color:var(--rr-accent-dark);color:#fff}.rrt-button-ghost{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}.rrt-button-ghost:hover{border-color:#fff;color:#fff}
.site-header{position:relative;z-index:20;border-bottom:1px solid rgba(23,32,51,.08);background:rgba(255,255,255,.94);backdrop-filter:blur(14px)}.header-inner{display:flex;min-height:84px;align-items:center;justify-content:space-between;gap:2rem}.site-brand{display:flex;align-items:center;gap:.75rem;color:var(--rr-ink);text-decoration:none}.brand-mark{display:grid;width:42px;height:42px;place-items:center;border-radius:13px;background:var(--rr-accent);color:#fff;font-size:1.35rem;font-weight:900;transform:rotate(-4deg)}.site-brand strong,.site-brand small{display:block}.site-brand strong{font-size:1.15rem}.site-brand small{color:var(--rr-muted);font-size:.68rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase}.primary-nav ul{display:flex;align-items:center;gap:1.35rem;margin:0;padding:0;list-style:none}.primary-nav a{color:var(--rr-ink);font-size:.94rem;font-weight:750;text-decoration:none}.primary-nav a:hover,.primary-nav .current-menu-item>a{color:var(--rr-accent)}.menu-toggle{display:none;border:1px solid var(--rr-line);border-radius:10px;background:#fff;padding:.55rem .8rem;font-weight:800}
.home-hero{overflow:hidden;background:linear-gradient(125deg,#152235 0%,#264f67 58%,#3f7f8d 100%);color:#fff}.home-hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);gap:clamp(2rem,5vw,6rem);align-items:center;min-height:690px;padding-block:clamp(4rem,8vw,8rem)}.home-hero h1{max-width:750px;margin:.25rem 0 1.35rem}.hero-lead{max-width:680px;color:#dde8ec;font-size:clamp(1.08rem,2vw,1.35rem)}.hero-actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:2rem}.hero-card-stack{position:relative;min-height:480px}.mini-social-card{position:absolute;width:min(390px,90%);min-height:210px;padding:2rem;border:1px solid rgba(255,255,255,.2);border-radius:24px;background:linear-gradient(145deg,rgba(255,255,255,.16),rgba(255,255,255,.06));box-shadow:0 30px 70px rgba(5,12,23,.28);backdrop-filter:blur(10px)}.mini-social-card span,.mini-social-card small,.mini-social-card strong{display:block}.mini-social-card span{color:var(--rr-gold);font-size:.76rem;font-weight:900;letter-spacing:.12em}.mini-social-card strong{margin:.75rem 0;font-size:2rem;line-height:1.05}.mini-social-card small{color:#dbe6ea}.card-one{top:4%;left:2%;transform:rotate(-6deg)}.card-two{top:30%;right:1%;transform:rotate(5deg);background:linear-gradient(145deg,rgba(230,95,60,.34),rgba(255,255,255,.06))}.card-three{bottom:0;left:7%;transform:rotate(-2deg);min-height:175px}
.section-heading{display:flex;align-items:end;justify-content:space-between;gap:2rem;margin-bottom:2rem}.section-heading h2{margin-bottom:0}.section-heading>div>p:last-child{max-width:720px;color:var(--rr-muted)}.section-heading>a{font-weight:800;text-decoration:none}.rrt-challenge-grid,.rrc-challenges-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.4rem}.rrt-challenge-card{overflow:hidden;border:1px solid var(--rr-line);border-radius:var(--rr-radius);background:#fff;box-shadow:0 8px 24px rgba(23,32,51,.035);transition:transform .18s ease,box-shadow .18s ease}.rrt-challenge-card:hover{transform:translateY(-4px);box-shadow:var(--rr-shadow)}.challenge-image{position:relative;display:block;overflow:hidden;aspect-ratio:16/10;background:linear-gradient(135deg,#315f77,#84aab3)}.challenge-image img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}.rrt-challenge-card:hover .challenge-image img{transform:scale(1.035)}.image-placeholder{display:block;width:100%;height:100%;background:radial-gradient(circle at 25% 25%,rgba(255,255,255,.3),transparent 25%),linear-gradient(135deg,#315f77,#84aab3)}.status-badge{display:inline-flex;width:max-content;padding:.38rem .68rem;border-radius:999px;background:#fff;color:var(--rr-ink);font-size:.72rem;font-weight:900;letter-spacing:.05em;text-transform:uppercase}.challenge-image .status-badge{position:absolute;left:1rem;bottom:1rem;box-shadow:0 6px 20px rgba(0,0,0,.15)}.status-open{background:#e8f7ee;color:#18713b}.status-upcoming{background:#fff3db;color:#875615}.status-permanent{background:#edf1ff;color:#4556a2}.status-closed{background:#eef0f2;color:#5d6570}.challenge-card-body{padding:1.25rem}.challenge-card-body h3{margin:.25rem 0 .65rem}.challenge-card-body h3 a{color:var(--rr-ink);text-decoration:none}.challenge-card-body>p{color:var(--rr-muted)}.card-taxonomy{margin:0!important;color:var(--rr-accent)!important;font-size:.74rem;font-weight:850;letter-spacing:.08em;text-transform:uppercase}.card-footer{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-top:.85rem;border-top:1px solid #edf0f3;color:var(--rr-muted);font-size:.8rem}.card-footer a{display:grid;width:34px;height:34px;place-items:center;border-radius:50%;background:var(--rr-soft);color:var(--rr-ink);font-size:1.2rem;text-decoration:none}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}.feature-grid article{padding-right:2rem}.feature-grid span{display:block;margin-bottom:1rem;color:var(--rr-accent);font-size:2rem;font-weight:900}.feature-grid p{color:var(--rr-muted)}
.page-banner{padding:clamp(3rem,6vw,6rem) 0;background:linear-gradient(135deg,#f4f1e9,#edf4f5);border-bottom:1px solid var(--rr-line)}.page-banner h1{margin-bottom:1rem;font-size:clamp(2.5rem,5vw,4.6rem)}.page-banner p{color:var(--rr-muted);font-size:1.15rem}.archive-filters{display:flex;align-items:end;gap:1rem;margin-bottom:2rem;padding:1.2rem;border:1px solid var(--rr-line);border-radius:14px;background:#fff}.archive-filters label{display:grid;flex:1;gap:.35rem;font-weight:800}.archive-filters select{width:100%;min-height:45px;border:1px solid #cdd3da;border-radius:10px;background:#fff;padding:.55rem}.rrt-pagination{margin-top:2.5rem}.nav-links{display:flex;gap:.5rem;justify-content:center}.page-numbers{display:grid;min-width:42px;height:42px;place-items:center;border:1px solid var(--rr-line);border-radius:9px;background:#fff;text-decoration:none}.page-numbers.current{background:var(--rr-ink);color:#fff}.rrt-empty{padding:3rem;border:1px dashed #bfc7d0;border-radius:18px;text-align:center;background:#fff}
.challenge-hero{position:relative;isolation:isolate;overflow:hidden;background:linear-gradient(125deg,#142236,#315f77);color:#fff}.challenge-hero.has-image::before{content:"";position:absolute;z-index:-2;inset:0;background-image:var(--hero-image);background-position:center;background-size:cover}.challenge-hero::after{content:"";position:absolute;z-index:-1;inset:0;background:linear-gradient(90deg,rgba(7,15,28,.96) 0%,rgba(7,15,28,.76) 56%,rgba(7,15,28,.38) 100%)}.challenge-hero-inner{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(310px,.65fr);gap:4rem;align-items:end;min-height:650px;padding-block:5.5rem}.challenge-title-block{max-width:780px}.challenge-title-block h1{margin:1rem 0}.challenge-title-block>p{max-width:700px;color:#dfe8ed;font-size:1.22rem}.hero-meta{display:flex;flex-wrap:wrap;gap:.65rem;margin-top:1.4rem}.hero-meta span{padding:.4rem .7rem;border:1px solid rgba(255,255,255,.22);border-radius:999px;background:rgba(255,255,255,.09);font-size:.78rem;font-weight:750}.challenge-action-box{padding:1.5rem;border:1px solid rgba(255,255,255,.23);border-radius:18px;background:rgba(8,17,31,.7);backdrop-filter:blur(10px)}.challenge-action-box h2{font-size:1.55rem}.challenge-action-box p:not(.rrt-kicker){color:#dfe7eb;font-size:.95rem}.challenge-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:clamp(2.5rem,5vw,5rem);align-items:start;padding-block:clamp(3rem,6vw,6rem)}.challenge-main{min-width:0}.challenge-sidebar{position:sticky;top:1.5rem;display:grid;gap:1rem}.sidebar-card{padding:1.25rem;border:1px solid var(--rr-line);border-radius:14px;background:#fff}.sidebar-card h2{font-size:1.12rem}.sidebar-card dl{margin:0}.sidebar-card dl div{display:flex;justify-content:space-between;gap:1rem;padding:.65rem 0;border-bottom:1px solid #edf0f2}.sidebar-card dl div:last-child{border:0}.sidebar-card dt{color:var(--rr-muted);font-size:.84rem}.sidebar-card dd{margin:0;text-align:right;font-size:.88rem;font-weight:800}.challenge-index{display:grid;gap:.55rem}.challenge-index a{color:var(--rr-ink);font-size:.9rem;text-decoration:none}.challenge-content{font-size:1.08rem}.entry-content>*{max-width:100%}.entry-content h2{margin-top:2.5rem}.entry-content p,.entry-content li{color:#30394a}.entry-content .is-style-lead{font-size:1.28rem;color:var(--rr-ink)}.challenge-section{padding:clamp(3rem,6vw,5.5rem) 0;border-top:1px solid var(--rr-line)}.resource-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.8rem;margin-bottom:2rem}.resource-links a{display:flex;gap:.8rem;align-items:center;padding:1rem;border:1px solid var(--rr-line);border-radius:12px;background:#fff;color:var(--rr-ink);text-decoration:none}.resource-links a span{display:grid;width:36px;height:36px;place-items:center;border-radius:50%;background:var(--rr-soft)}.video-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.video-grid article{overflow:hidden;border:1px solid var(--rr-line);border-radius:14px;background:#fff}.video-grid h3{padding:1rem 1rem 0}.video-grid iframe{display:block;width:100%;aspect-ratio:16/9;height:auto;border:0}.museum-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.museum-item{overflow:hidden;border:1px solid var(--rr-line);border-radius:15px;background:#fff}.museum-item>img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover}.museum-item>div{padding:1.1rem}.museum-item h3{margin:.6rem 0}.museum-item small{color:var(--rr-muted)}.comments-area .comment-list{display:grid;gap:1rem;padding:0;list-style:none}.comment-body{padding:1rem;border:1px solid var(--rr-line);border-radius:13px;background:#fff}.comment-meta{display:flex;align-items:center;gap:.8rem}.comment-author img{border-radius:50%}.comment-form{display:grid;gap:.8rem}.comment-form textarea,.comment-form input[type=text],.comment-form input[type=email],.comment-form input[type=url]{width:100%;border:1px solid #ccd3da;border-radius:10px;padding:.75rem;background:#fff}.form-submit .submit{min-height:46px;border:0;border-radius:10px;background:var(--rr-accent);color:#fff;padding:.7rem 1rem;font-weight:800;cursor:pointer}.comment-notes{padding:1rem;background:#fff8e9}.standard-post{padding:1.5rem 0;border-bottom:1px solid var(--rr-line)}
.site-footer{padding:4rem 0 1.5rem;background:#121c2b;color:#fff}.footer-grid{display:grid;grid-template-columns:1fr auto;gap:3rem}.footer-grid p,.footer-bottom{color:#acb7c4}.footer-grid ul{margin:0;padding:0;list-style:none}.footer-grid a{color:#fff;text-decoration:none}.footer-bottom{display:flex;justify-content:space-between;gap:2rem;margin-top:3rem;padding-top:1.25rem;border-top:1px solid rgba(255,255,255,.13);font-size:.76rem}
@media(max-width:980px){.home-hero-grid,.challenge-hero-inner,.challenge-layout{grid-template-columns:1fr}.hero-card-stack{min-height:420px}.challenge-hero-inner{min-height:auto}.challenge-action-box{max-width:620px}.challenge-sidebar{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}.rrt-challenge-grid,.rrc-challenges-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){body{font-size:16px}.header-inner{min-height:72px}.menu-toggle{display:block}.primary-nav{display:none;position:absolute;top:72px;left:1rem;right:1rem;padding:1rem;border:1px solid var(--rr-line);border-radius:14px;background:#fff;box-shadow:var(--rr-shadow)}.primary-nav.is-open{display:block}.primary-nav ul{display:grid;gap:.8rem}.home-hero-grid{min-height:auto}.hero-card-stack{min-height:350px}.mini-social-card{width:85%;min-height:160px;padding:1.35rem}.mini-social-card strong{font-size:1.4rem}.rrt-challenge-grid,.rrc-challenges-grid,.feature-grid,.video-grid,.museum-grid,.resource-links,.challenge-sidebar,.contribution-page-content{grid-template-columns:1fr}.section-heading,.footer-bottom{align-items:start;flex-direction:column}.archive-filters{align-items:stretch;flex-direction:column}.footer-grid{grid-template-columns:1fr}.challenge-hero::after{background:rgba(7,15,28,.78)}.challenge-hero-inner{padding-block:3.5rem}.rrc-share-copy{inset:auto 6% 9%}.card-three{display:none}}
@media(max-width:480px){.rrt-container{width:min(100% - 1.2rem,1180px)}.rrt-challenge-grid,.rrc-challenges-grid{grid-template-columns:1fr}.hero-card-stack{min-height:290px}.card-one{left:0}.card-two{top:40%;right:0}.site-brand small{display:none}.hero-actions{display:grid}.rrt-button{width:100%}}

.museum-actions{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem;margin-top:1.5rem}.museum-actions>span{color:var(--rr-muted);font-size:.92rem}.museum-image-link{display:block;overflow:hidden}.museum-image-link img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .2s ease}.museum-image-link:hover img{transform:scale(1.02)}.subpage-hero{padding:clamp(3rem,7vw,5.5rem) 0;background:linear-gradient(135deg,#f7f9fb,#eef4f8);border-bottom:1px solid var(--rr-line)}.subpage-hero h1{max-width:900px;margin:.5rem 0 1rem}.subpage-hero p{max-width:780px;color:var(--rr-muted);font-size:1.05rem}.subpage-back{display:inline-flex;margin-bottom:1.5rem;color:var(--rr-ink);font-weight:800;text-decoration:none}.museum-page-content{padding-block:clamp(2.5rem,5vw,5rem)}.museum-grid-full{grid-template-columns:repeat(3,minmax(0,1fr))}.museum-pagination{display:flex;align-items:center;justify-content:center;gap:1rem;margin-top:2rem}.museum-pagination span{color:var(--rr-muted);font-size:.9rem}.contribution-page-content{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:2rem;align-items:start;padding-block:clamp(2.5rem,5vw,5rem)}.contribution-form-card,.contribution-rules{padding:clamp(1.2rem,3vw,2rem);border:1px solid var(--rr-line);border-radius:16px;background:#fff}.contribution-rules{position:sticky;top:1.5rem}.contribution-rules h2{font-size:1.2rem}.contribution-rules ul{padding-left:1.2rem;color:var(--rr-muted)}

@media(max-width:980px){.museum-grid-full{grid-template-columns:repeat(2,minmax(0,1fr))}.contribution-page-content{grid-template-columns:1fr}.contribution-rules{position:static}}
@media(max-width:620px){.museum-grid-full{grid-template-columns:1fr}.museum-pagination{align-items:stretch;flex-direction:column}.museum-pagination .rrt-button{text-align:center}}

/* Account controls and custom authentication pages */
.header-account{display:flex;align-items:center;gap:.65rem;white-space:nowrap}.header-account-user{display:flex;align-items:center;gap:.5rem;color:var(--rr-ink);font-size:.86rem;font-weight:800;text-decoration:none}.header-account-user img{border-radius:50%}.header-account-logout{color:var(--rr-muted);font-size:.78rem;font-weight:750;text-decoration:none}.header-login{min-height:40px;padding:.5rem .85rem;font-size:.86rem}
.rrt-auth-stage{position:relative;isolation:isolate;overflow:hidden;min-height:calc(100vh - 84px);padding:clamp(3rem,7vw,7rem) 0;background:linear-gradient(125deg,#142236 0%,#264f67 58%,#3f7f8d 100%);color:#fff}.rrt-auth-stage::before{content:"";position:absolute;z-index:-1;width:520px;height:520px;top:-210px;right:-130px;border-radius:50%;background:rgba(242,191,104,.15)}.rrt-auth-stage::after{content:"";position:absolute;z-index:-1;width:400px;height:400px;bottom:-230px;left:-120px;border-radius:50%;background:rgba(230,95,60,.16)}.rrt-auth-stage-inner{display:grid;grid-template-columns:minmax(0,1fr) minmax(420px,540px);gap:clamp(2.5rem,7vw,7rem);align-items:center}.rrt-auth-copy{max-width:620px}.rrt-auth-copy h2{margin:.35rem 0 1.25rem;font-size:clamp(2.45rem,5vw,4.6rem)}.rrt-auth-copy>p{max-width:580px;color:#dce8ed;font-size:1.15rem}.rrt-auth-copy ul{display:grid;gap:.75rem;margin:2rem 0 0;padding:0;list-style:none}.rrt-auth-copy li{display:flex;gap:.7rem;align-items:flex-start;color:#e5eef1}.rrt-auth-copy li::before{content:"✓";display:grid;flex:0 0 25px;height:25px;place-items:center;border-radius:50%;background:rgba(255,255,255,.14);color:var(--rr-gold);font-weight:900}.rrt-auth-content{color:var(--rr-ink)}
@media(max-width:1080px){.header-inner{gap:1rem}.primary-nav ul{gap:.85rem}.header-account-user span{display:none}.rrt-auth-stage-inner{grid-template-columns:1fr}.rrt-auth-copy{margin-inline:auto;text-align:center}.rrt-auth-copy ul{width:max-content;max-width:100%;margin-inline:auto;text-align:left}}
@media(max-width:760px){.header-account{margin-left:auto}.header-account-logout{display:none}.header-login{min-height:38px;padding:.45rem .7rem}.menu-toggle{order:4}.primary-nav{top:72px}.rrt-auth-stage{min-height:auto;padding:2.5rem 0 4rem}.rrt-auth-copy h2{font-size:2.25rem}.rrt-auth-copy>p{font-size:1rem}}
@media(max-width:480px){.header-login{width:auto}.header-account-user img{width:34px;height:34px}.rrt-auth-copy{display:none}.rrt-auth-stage-inner{display:block}}