/* Wuhan 1024 · no external font or asset dependency. */
:root{--paper:#faf8f3;--white:#fff;--ink:#202b25;--muted:#647067;--line:#deded5;--orange:#b94515;--orange-bright:#eb602a;--orange-light:#fff0e6;--green:#315d45;--green-light:#eaf0e6;--radius:16px;--max:1180px;--sans:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:104px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed}a:hover{color:var(--orange)}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--orange-bright);outline-offset:4px}input:focus-visible,textarea:focus-visible,select:focus-visible{outline-offset:2px}::selection{background:#ffd4bc;color:var(--ink)}[hidden]{display:none!important}h1,h2,h3,h4,p{margin:0}h1,h2,h3,h4{line-height:1.35;letter-spacing:-.035em}h2{font-size:clamp(28px,3.3vw,42px);font-weight:700}h3{font-size:23px}h4{font-size:18px}ul,ol{margin-top:0;padding-left:1.3em}li+li{margin-top:7px}img,svg{max-width:100%}.container{width:min(var(--max),calc(100% - 80px));margin-inline:auto}.section{padding:92px 0}.section-anchor{scroll-margin-top:100px}.section-tinted{background:#f0eee7}.eyebrow{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--orange);line-height:1.6;margin-bottom:17px}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:38px}.section-heading>p,.faq-layout>div>p:not(.eyebrow){font-size:15px;color:var(--muted);line-height:1.8}.section-footnote{font-size:13px;color:var(--muted);margin-top:22px}.mobile-break{display:none}.skip-link{position:absolute;left:20px;top:-100px;background:var(--ink);color:white;padding:12px 20px;z-index:1000}.skip-link:focus{top:10px}.button{min-height:48px;border:1px solid transparent;border-radius:8px;padding:12px 20px;display:inline-flex;align-items:center;justify-content:center;gap:25px;font-size:14px;line-height:1.5;font-weight:650;transition:background .18s,color .18s,transform .18s}.button span{font-size:18px}.button-primary{color:#fff;background:var(--orange)}.button-primary:hover{background:#96370e;color:#fff;transform:translateY(-1px)}.button-quiet{color:var(--ink);background:transparent;border-color:#c9cfc5}.button-quiet:hover{background:#efeee7;color:var(--ink)}.button-green{color:white;background:var(--green)}.button-green:hover{background:#204a34;color:white}.button:disabled{color:#707970;background:#e7e8e0;border-color:#e7e8e0;transform:none}.small-square{display:inline-block;width:7px;height:7px;background:var(--orange-bright);margin-right:9px}
/* Header and hero */
.site-header{position:sticky;top:0;z-index:50;background:rgba(250,248,243,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.header-inner{height:86px;display:flex;align-items:center;justify-content:space-between;gap:28px}.wordmark{display:flex;gap:12px;align-items:center;flex-shrink:0}.wordmark-number{font-family:var(--mono);font-weight:800;font-size:38px;letter-spacing:-3px;line-height:1}.wordmark-dot{color:var(--orange-bright)}.wordmark-city{font-size:13px;font-weight:750;line-height:1.3;padding-left:12px;border-left:1px solid #a7aea4}.wordmark-city>span{font-family:var(--mono);font-size:9px;font-weight:400;letter-spacing:.01em;color:var(--muted)}.primary-nav{display:flex;align-items:center;gap:25px;font-size:13px;font-weight:650}.primary-nav>a{min-height:44px;display:flex;align-items:center}.primary-nav .nav-cta{background:var(--ink);color:white;border-radius:7px;padding:0 15px;gap:15px}.primary-nav .nav-cta:hover{background:var(--orange)}.primary-nav .account-link{max-width:110px;padding-left:14px;border-left:1px solid var(--line);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--green)}.nav-toggle{display:none}.hero{overflow:hidden;border-bottom:1px solid var(--line);padding:76px 0 0;background:radial-gradient(circle at 86% 27%,#f0eee3 0,transparent 43%)}.hero-grid{display:grid;grid-template-columns:1.07fr .93fr;gap:45px;align-items:center}.hero h1{font-size:clamp(36px,4.1vw,56px);font-weight:760;line-height:1.27;letter-spacing:-.045em;max-width:670px}.hero h1 span{color:var(--orange)}.hero-description{font-size:17px;line-height:1.8;color:var(--muted);margin:25px 0 29px;max-width:600px}.hero-meta{display:flex;gap:34px;padding-top:17px;border-top:1px solid var(--line)}.hero-meta>div{display:grid;gap:4px;min-width:0}.meta-label{font-size:11px;letter-spacing:.04em;color:var(--muted)}.hero-meta strong{font-size:14px;font-weight:650}.hero-actions{display:flex;flex-wrap:wrap;gap:11px;margin-top:28px}.hero-note{font-size:12px;line-height:1.75;color:var(--muted);margin-top:17px;max-width:590px}.hero-art{border:1px solid #d5d8cb;border-radius:18px;background:linear-gradient(155deg,#fffdf8,#eeeee3);box-shadow:0 24px 70px rgba(47,57,40,.07);transform:rotate(1deg);padding:20px 23px 17px;position:relative}.art-topline,.art-bottomline{display:flex;justify-content:space-between;align-items:center;font:9px var(--mono);letter-spacing:.035em;color:var(--muted)}.art-topline{border-bottom:1px solid var(--line);padding-bottom:14px}.art-status{border:1px solid #bac6b3;padding:3px 7px;border-radius:3px;color:var(--green);font-size:9px}.art-stage{position:relative;min-height:338px;margin:10px -10px;background-image:radial-gradient(#d7dacd .7px,transparent .7px);background-size:16px 16px}.art-network{width:100%;height:330px;position:absolute;inset:0}.art-badge{position:absolute;padding:13px 18px;border:1px solid var(--line);border-radius:10px;background:rgba(255,253,248,.95);box-shadow:0 10px 25px rgba(37,45,35,.06)}.art-badge span{display:block;color:var(--orange);font:9px var(--mono);margin-bottom:5px}.art-badge strong{display:block;font-size:17px;letter-spacing:-.03em}.art-badge i{display:block;font-size:11px;color:var(--muted);font-style:normal;margin-top:3px}.art-badge-build{top:43px;left:15px}.art-badge-connect{bottom:34px;right:7px;border-color:#c0d1ba}.art-badge-connect span{color:var(--green)}.art-coordinates{position:absolute;bottom:28px;left:18px;font:8px/1.6 var(--mono);color:#84907e}.art-bottomline{border-top:1px solid var(--line);padding-top:12px}.art-cursor{font-size:23px;color:var(--orange);font-weight:700}.art-plus{font-size:20px;color:var(--green)}.hero-foot{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:64px;padding:22px 0;font-size:12px;color:var(--muted);border-top:1px solid var(--line)}.hero-foot a{min-height:30px;display:flex;gap:18px;align-items:center;font-weight:650}
/* Tabs and content */
.tab-list{display:none}.is-enhanced .tab-list{display:flex}.tab-list button{background:transparent;border:0;color:var(--muted);min-height:60px;transition:background .18s,color .18s;line-height:1.5}.role-tabs{gap:9px;margin-bottom:18px}.role-tabs button{flex:1;text-align:left;padding:16px 20px;border:1px solid var(--line);border-radius:9px;font-size:15px;font-weight:650;background:#fffdf8}.role-tabs button>span{font:11px var(--mono);margin-right:10px;color:#899284}.role-tabs button[aria-selected=true]{color:white;background:var(--ink);border-color:var(--ink)}.role-tabs button[aria-selected=true]>span{color:#cdd5c6}.role-tabs button:hover:not([aria-selected=true]){background:#efeee5}.participation-panel{padding:35px 38px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);display:grid;grid-template-columns:1fr 1fr;gap:22px 50px;align-items:start}.participation-panel+.participation-panel{margin-top:18px}.participation-summary h3{font-size:26px;margin-bottom:13px}.participation-summary p{font-size:15px;color:var(--muted);max-width:510px}.participation-preparation h4{font-size:13px;color:var(--muted);letter-spacing:.03em;margin-bottom:11px}.participation-preparation ul{font-size:14px;padding-left:1.2em;margin-bottom:0}.participation-panel>.button{justify-self:start;margin-top:3px}.participation-panel .participation-preparation+.button{grid-column:1 / -1}.compact-list{font-size:13px;color:var(--muted);margin:20px 0 0;padding-left:1.2em}.activity-grid,.track-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.activity-card{padding:29px 26px 28px;border-radius:var(--radius);background:var(--paper);border:1px solid #dddfd4;position:relative}.activity-card .activity-number{font:38px var(--mono);color:#b1b8a9;display:block;line-height:1;margin-bottom:28px}.activity-card .eyebrow{font-size:10px;margin-bottom:8px}.activity-card h3{font-size:23px;margin-bottom:13px}.activity-card>p:not(.eyebrow){font-size:14px;color:var(--muted)}.activity-card:nth-child(2){background:#fff8ee;border-color:#ebcdb5}.activity-card:nth-child(2) .activity-number{color:#d9a78d}.activity-card:nth-child(3){background:#ebf0e5;border-color:#c6d5bf}.activity-card:nth-child(3) .eyebrow{color:var(--green)}.schedule-tabs{gap:0;border-bottom:1px solid var(--line);margin-bottom:25px}.schedule-tabs button{flex:1;text-align:left;padding:13px 22px 18px;font-size:16px;font-weight:650;border-bottom:3px solid transparent;margin-bottom:-1px}.schedule-tabs button>span{font:10px var(--mono);letter-spacing:.07em;display:block;margin-bottom:6px}.schedule-tabs button[aria-selected=true]{color:var(--orange);border-bottom-color:var(--orange)}.schedule-tabs button:hover{background:#f1eee6}.schedule-panel{padding:25px 30px 10px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white)}.schedule-panel+.schedule-panel{margin-top:20px}.schedule-intro{padding:4px 0 20px;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}.schedule-intro h3{font-size:23px;color:var(--ink);margin-bottom:10px}.agenda-list{list-style:none;padding:0;margin:0}.agenda-list>li{display:grid;grid-template-columns:146px 1fr;gap:25px;padding:22px 0;border-bottom:1px solid #e9ebe4;margin:0}.agenda-list>li:last-child{border-bottom:0}.agenda-time{font-family:var(--mono);color:var(--orange);font-size:14px;font-weight:650;line-height:1.7;white-space:normal}.agenda-list h4{font-size:17px;margin-bottom:5px}.agenda-list p{font-size:13px;color:var(--muted)}.agenda-list .status-label{display:inline-block;font-size:11px;border-radius:4px;background:#f0efe8;color:#586452;padding:2px 7px;margin-left:6px}.hackathon-section{background:#232c27;color:#f8f8ef}.hackathon-section .eyebrow{color:#fdb187}.hackathon-section .section-heading>p{color:#b6c1b4}.hackathon-section h2>span{color:#a8b7a4}.track-card{padding:27px;border:1px solid #536052;background:#2c362e;border-radius:12px}.track-card h3{font-size:23px;margin-bottom:12px}.track-card .eyebrow{font-size:11px;margin-bottom:12px}.track-card p{font-size:14px;color:#c3ccbf}.track-card ul{font-size:13px;color:#c3ccbf;margin:18px 0 0}.submission-box{padding:35px 0;margin:32px 0 12px;border-top:1px solid #536052;display:grid;grid-template-columns:1fr 2fr;gap:50px}.submission-box h3{font-size:25px;margin-bottom:12px}.submission-box p{font-size:13px;color:#b8c3b4}.submission-rules{font-size:14px;color:#cbd4c5}.rules-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 28px}.rules-grid>div{padding:0}.rules-grid h4{font-size:15px;color:#f5f7ee;margin-bottom:8px}.rules-grid p{font-size:13px}.judging-block{border-top:1px solid #536052;margin-top:23px;padding-top:18px}.judging-block h4{font-size:15px;margin-bottom:12px}.judging-grid{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:12px;color:#c3ccbf}.rules-note{margin-top:14px!important;font-size:12px!important}.opc-section{background:#e8eee1}.opc-section .eyebrow{color:var(--green)}.opc-section h2>span{color:var(--green)}.opc-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.opc-card{padding:30px;background:#f6f8f0;border:1px solid #bdcbb6;border-radius:var(--radius)}.opc-card-number{font:10px var(--mono);letter-spacing:.05em;color:var(--green);display:block;margin-bottom:22px}.opc-card h3{font-size:27px;margin-bottom:16px}.opc-card p,.opc-card ul{font-size:14px;color:#586851;margin-bottom:22px}.opc-card .button{margin-top:5px}.opc-flow{display:flex;gap:22px;justify-content:space-between;align-items:center;padding:25px 0 0;margin-top:20px;border-top:1px solid #bdcbb6;font-size:14px;font-weight:650;color:var(--green)}.opc-flow i{font-style:normal;font-size:18px;color:#758970}
/* Registration */
.registration-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:70px;align-items:start}.registration-intro>p:not(.eyebrow){margin-top:24px;font-size:15px;color:var(--muted)}.registration-intro h2{font-size:clamp(32px,3.4vw,43px);line-height:1.4}.availability-note{padding:22px 23px;margin-top:30px;background:#eeeae0;border:1px solid #dbd8ca;border-radius:11px;font-size:14px}.status-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--orange);margin-right:8px}.availability-note strong{font-size:14px}.availability-note p{font-size:13px;line-height:1.8;color:var(--muted);margin-top:8px}.availability-note.is-open{background:var(--green-light);border-color:#bfceb7}.availability-note.is-open .status-dot{background:var(--green)}.registration-intro>.privacy-note{font-size:12px!important;max-width:380px}.submission-access-note{max-width:560px;padding:20px 24px;margin-top:28px!important;border:2px solid var(--orange);border-left-width:7px;border-radius:8px;background:#fff7ec;color:var(--ink)!important;font-size:18px!important;font-weight:700;line-height:1.6}.registration-form{padding:30px 32px;background:white;border:1px solid var(--line);border-radius:var(--radius);min-width:0}.registration-auth-gate{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 18px;margin-bottom:22px;border:1px solid #d7c4ae;border-radius:10px;background:#fff7ec}.registration-auth-gate strong{font-size:14px}.registration-auth-gate p{margin-top:4px;color:var(--muted);font-size:12px;line-height:1.65}.registration-auth-gate .button{min-width:88px;min-height:42px;flex-shrink:0}.form-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:23px}.form-heading h3{font-size:22px}.form-heading>span{font-size:11px;color:var(--muted)}.required-mark{color:#c62828}.form-field{display:flex;flex-direction:column;gap:7px;margin-bottom:17px;min-width:0}.form-field>label,.field-label{font-size:13px;font-weight:650}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:15px}.contact-row{grid-template-columns:.8fr 1.2fr}.form-field>input,.form-field>select,.form-field>textarea{width:100%;min-width:0;border:1px solid #bfc6ba;background:#fffefb;border-radius:7px;padding:10px 12px;min-height:45px;color:var(--ink);font-size:14px;line-height:1.6}.form-field>textarea{resize:vertical;min-height:102px}.form-field>input::placeholder,.form-field>textarea::placeholder{color:#7f897b;font-size:12px}.form-field>select{padding-right:30px}.form-field>input:disabled,.form-field>textarea:disabled,.form-field>select:disabled{background:#f4f4ee}.field-help{font-size:11px;line-height:1.7;color:var(--muted)}.registration-form fieldset{border:0;border-top:1px solid var(--line);margin:11px 0 0;padding:20px 0 0;min-width:0}.registration-form legend{padding:0 10px 0 0;font-size:14px;font-weight:700}.session-options{display:flex;flex-direction:column;gap:9px;padding-top:2px}.session-option{display:flex;align-items:flex-start;gap:10px;border:1px solid var(--line);border-radius:7px;padding:10px 12px;cursor:pointer;font-size:13px}.session-option input{margin:5px 0 0;accent-color:var(--green);width:17px;height:17px;flex-shrink:0}.session-option small{display:block;font-size:10px;color:var(--muted);margin-top:2px}.consent-field{display:flex;align-items:flex-start;gap:9px;border-top:1px solid var(--line);padding-top:20px;margin-top:4px}.consent-field input{margin:4px 0 0;width:18px;height:18px;accent-color:var(--green);flex-shrink:0}.consent-field label{font-size:11px;color:var(--muted);line-height:1.8;cursor:pointer}.consent-field a{color:var(--orange);text-decoration:underline}.form-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.form-actions .button{flex:1;font-size:13px;padding:12px 11px}.form-status{font-size:12px;line-height:1.8;margin-top:16px;color:var(--muted);overflow-wrap:anywhere}.form-status.is-error{color:#a7351c}.form-status.is-success{color:var(--green);background:#edf3e7;padding:12px 14px;border-radius:7px}.form-note{font-size:13px;background:var(--orange-light);padding:12px;margin-bottom:15px}
/* Guide, FAQ, history and footer */
.guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}.guide-item{border-top:2px solid #c5ccbe;padding-top:21px}.guide-item h3{font-size:20px;margin-bottom:12px}.guide-item p{font-size:14px;color:var(--muted);margin-bottom:10px}.guide-item a{text-decoration:underline;text-underline-offset:3px}.guide-item .eyebrow{font-size:10px;margin-bottom:11px}.contact-box{margin-top:30px;border-top:1px solid #d0d4c7;padding-top:20px;font-size:13px;color:var(--muted)}.contact-box h3{font-size:17px;color:var(--ink);margin-bottom:8px}.contact-box a{color:var(--orange);text-decoration:underline;text-underline-offset:3px}.faq-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px}.faq-layout>div>p:not(.eyebrow){margin-top:22px}.faq-list details{border-bottom:1px solid var(--line);padding:0}.faq-list details:first-child{border-top:1px solid var(--line)}.faq-list summary{font-size:15px;font-weight:650;padding:20px 35px 20px 0;cursor:pointer;list-style:none;position:relative;min-height:60px}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary::after{content:'+';position:absolute;right:2px;top:16px;font-size:22px;font-weight:400;color:var(--green)}.faq-list details[open] summary::after{content:'−'}.faq-list details>p,.faq-list details>div{font-size:13px;color:var(--muted);padding:0 24px 22px 0}.history-section{padding-top:0}.history-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.history-card{display:block;border:1px solid var(--line);border-radius:12px;padding:25px 28px;background:#f1efe7}.history-year{font:37px var(--mono);letter-spacing:-2px;float:left;margin-right:26px;color:#75846e}.history-card h3{font-size:18px;margin:3px 0 10px}.history-card p{font-size:13px;color:var(--muted)}.history-card a,.history-card .history-link{font-size:12px;color:var(--orange);display:inline-flex;gap:20px;align-items:center;margin-top:15px;text-decoration:underline;text-underline-offset:3px;min-height:30px}.history-card>div{overflow:hidden}.site-footer{background:#ecebe3;border-top:1px solid #d2d5c7;padding:33px 0 22px}.footer-top{display:flex;align-items:center;gap:40px}.footer-top>p{font-size:13px;color:var(--muted);flex:1}.share-button{background:transparent;color:var(--ink);border:1px solid #b8c2b0;border-radius:7px;min-height:44px;padding:10px 14px;font-size:12px;display:flex;align-items:center;gap:20px}.share-button:hover{background:#e2e7d9}.share-status{font-size:12px;color:var(--green);padding-top:10px;overflow-wrap:anywhere}.share-status:empty{padding:0}.footer-bottom{border-top:1px solid #cfd4c6;margin-top:25px;padding-top:18px;display:flex;justify-content:space-between;align-items:start;gap:28px;font-size:11px;color:var(--muted)}.footer-bottom>p{max-width:740px}.footer-bottom>a{white-space:nowrap;min-height:25px}
.share-fallback{margin-top:8px;width:100%;max-width:600px;border:1px solid #acb8a1;border-radius:5px;padding:8px 11px;font-size:12px;background:#fafbf5;color:var(--ink)}
.hero h1{text-wrap:balance}
.rules-grid h3{font-size:16px;margin-bottom:10px}.rules-grid h3:not(:first-child){margin-top:22px}.rules-grid ul,.rules-grid ol{font-size:13px;line-height:1.8;margin-bottom:0}.judging-block>h3{font-size:17px;margin-bottom:15px}.judging-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 22px}.judging-grid h4{font-size:13px;margin-bottom:6px}.judging-grid p{font-size:12px!important}.participation-preparation .button{margin-top:20px}.activity-name{color:var(--orange)!important;font-size:12px!important;margin-bottom:9px}.activity-card:nth-child(3) .activity-name{color:var(--green)!important}
@media(min-width:1500px){.hero{padding-top:92px}.hero-art{margin-left:10px}}@media(max-width:1100px){.container{width:calc(100% - 56px)}.primary-nav{gap:16px;font-size:12px}.hero-grid{gap:25px}.hero h1{font-size:43px}.hero-description{font-size:15px}.hero-art{padding-inline:17px}.art-topline{font-size:8px}.art-stage{min-height:316px}.art-network{height:310px}.art-badge{padding:12px 14px}.art-badge strong{font-size:15px}.art-badge-build{left:0}.art-badge-connect{right:0}.role-tabs button{padding-inline:15px;font-size:13px}.role-tabs button>span{margin-right:7px}.activity-card{padding:25px 22px}.activity-card h3{font-size:20px}.registration-layout{gap:38px}.registration-form{padding:27px 25px}.submission-box{gap:35px}.faq-layout{gap:45px}}
@media(max-width:900px){.header-inner{height:75px}.wordmark-number{font-size:34px}.wordmark-city{font-size:12px}.nav-toggle{display:flex;flex-direction:column;justify-content:center;gap:5px;align-items:center;width:45px;height:45px;background:transparent;border:1px solid #c4cabc;border-radius:7px;padding:10px}.nav-toggle>span{width:19px;height:1.5px;background:var(--ink);transition:transform .18s,opacity .18s}.nav-toggle[aria-expanded=true]>span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}.nav-toggle[aria-expanded=true]>span:nth-child(2){opacity:0}.nav-toggle[aria-expanded=true]>span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}.primary-nav{display:none;position:absolute;top:75px;left:0;right:0;padding:17px 28px 23px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:0 15px 22px rgba(32,43,37,.04);flex-wrap:wrap;gap:8px 25px;font-size:14px}.primary-nav.is-open{display:flex}.primary-nav>a{flex:1 1 27%;min-height:44px}.primary-nav .nav-cta{flex:1 1 100%;justify-content:center;margin-top:5px}.hero{padding-top:55px}.hero-grid{grid-template-columns:1fr 1fr;gap:24px}.hero h1{font-size:37px}.hero-description{font-size:14px}.hero-meta{gap:20px}.hero-meta strong{font-size:12px}.hero-actions .button{font-size:12px;padding:10px 14px}.hero-art{transform:none;padding:13px 14px}.art-topline>span:first-child{font-size:7px}.art-stage{min-height:287px}.art-network{height:283px}.art-badge{padding:10px 12px}.art-badge strong{font-size:13px}.art-badge i{font-size:10px}.art-badge-build{top:33px}.art-badge-connect{bottom:33px}.art-bottomline{font-size:7px}.hero-foot{margin-top:46px;font-size:11px}.section{padding:70px 0}.section-heading{margin-bottom:29px}.section-heading>p{font-size:13px}.activity-grid,.track-grid{gap:13px}.activity-card{padding:22px 18px}.activity-card h3{font-size:19px}.activity-card>p:not(.eyebrow){font-size:13px}.compact-list{font-size:12px}.track-card{padding:22px 18px}.track-card h3{font-size:20px}.track-card p{font-size:13px}.submission-box{grid-template-columns:1fr;gap:25px}.submission-box>div>p br{display:none}.opc-card{padding:26px}.opc-card h3{font-size:23px}.registration-layout{grid-template-columns:1fr 1.25fr;gap:30px}.registration-intro h2{font-size:32px}.registration-intro>p:not(.eyebrow){font-size:13px}.registration-form{padding:25px 21px}.form-row{grid-template-columns:1fr;gap:0}.contact-row{grid-template-columns:1fr}.guide-grid{gap:20px}.guide-item h3{font-size:18px}.faq-layout{gap:35px}.history-section{padding-top:0}.history-year{float:none;margin:0 0 10px;display:block;font-size:30px}.footer-top{gap:28px}.footer-top>p{font-size:11px}}
@media(max-width:680px){html{scroll-padding-top:90px}.container{width:calc(100% - 40px)}.section{padding:55px 0}.section-anchor{scroll-margin-top:87px}.hero{padding-top:40px}.hero-grid{grid-template-columns:1fr;gap:32px}.hero h1{font-size:clamp(34px,7vw,44px);max-width:100%}.hero .eyebrow{font-size:11px;margin-bottom:14px}.hero-description{font-size:15px;margin:20px 0 23px}.hero-meta strong{font-size:13px}.hero-meta{gap:25px}.hero-actions{margin-top:23px}.hero-actions .button{font-size:13px;min-height:46px;padding:12px 16px}.hero-note{font-size:11px;margin-top:15px}.hero-art{width:min(100%,430px);justify-self:center;padding:16px 19px}.art-topline>span:first-child{font-size:9px}.art-stage{min-height:260px}.art-network{height:260px}.art-badge strong{font-size:15px}.art-badge-build{left:12px;top:18px}.art-badge-connect{right:0;bottom:18px}.art-bottomline{font-size:8px}.art-coordinates{bottom:16px}.hero-foot{margin-top:33px;flex-direction:column;align-items:start;gap:7px;padding:18px 0;font-size:11px}.hero-foot a{min-height:30px}.section-heading{display:block;margin-bottom:25px}.section-heading>p{margin-top:15px;font-size:13px}.section-heading>p br{display:none}.eyebrow{font-size:10px;margin-bottom:12px}h2{font-size:30px}.mobile-break{display:block}.role-tabs{flex-wrap:wrap;gap:8px;margin-bottom:13px}.role-tabs button{flex:1 1 44%;min-height:54px;font-size:12px;padding:12px 13px}.role-tabs button>span{font-size:10px;margin-right:6px}.participation-panel{grid-template-columns:1fr;gap:20px;padding:25px 23px}.participation-summary h3{font-size:23px;margin-bottom:11px}.participation-summary p{font-size:13px}.participation-preparation ul{font-size:13px}.participation-panel>.button{font-size:13px}.activity-grid,.track-grid{grid-template-columns:1fr;gap:13px}.activity-card{padding:24px}.activity-card .activity-number{float:right;font-size:30px;margin:0 0 0 12px}.activity-card h3{font-size:23px}.activity-card .eyebrow{font-size:10px}.activity-card>p:not(.eyebrow){font-size:14px}.compact-list{font-size:13px;margin-top:15px}.schedule-tabs button{padding:11px 7px 15px;font-size:12px;line-height:1.8}.schedule-tabs button>span{font-size:9px;letter-spacing:.02em}.schedule-panel{padding:22px 22px 8px}.schedule-intro{font-size:13px;padding-bottom:15px}.schedule-intro h3{font-size:21px}.agenda-list>li{grid-template-columns:1fr;gap:6px;padding:18px 0}.agenda-time{font-size:12px}.agenda-list h4{font-size:16px}.agenda-list p{font-size:12px}.track-card{padding:24px}.track-card h3{font-size:23px}.track-card p{font-size:14px}.submission-box{gap:23px;margin-top:25px;padding:25px 0 18px}.submission-box h3{font-size:24px}.rules-grid{grid-template-columns:1fr;gap:18px}.judging-grid{gap:6px 16px}.opc-grid{grid-template-columns:1fr;gap:15px}.opc-card{padding:25px}.opc-card h3{font-size:24px}.opc-card p,.opc-card ul{font-size:13px}.opc-card-number{margin-bottom:17px}.opc-flow{display:grid;grid-template-columns:1fr 18px 1fr;gap:13px;font-size:12px;padding-top:20px}.opc-flow>i:nth-of-type(2){display:none}.opc-flow>span:nth-of-type(3){grid-column:1;grid-row:2}.opc-flow>i:nth-of-type(3){grid-column:2;grid-row:2}.opc-flow>span:nth-of-type(4){grid-column:3;grid-row:2}.section-footnote{font-size:11px;margin-top:18px}.registration-layout{grid-template-columns:1fr;gap:28px}.registration-intro h2{font-size:34px}.registration-intro h2 br{display:none}.registration-intro>p:not(.eyebrow){margin-top:18px}.registration-intro>p br{display:none}.availability-note{margin-top:22px;padding:18px 20px}.registration-form{padding:24px 22px}.form-row{grid-template-columns:1fr 1fr;gap:12px}.contact-row{grid-template-columns:.75fr 1.25fr}.form-heading{margin-bottom:20px}.form-actions .button{font-size:12px}.form-field label,.field-label{font-size:12px}.guide-grid{grid-template-columns:1fr;gap:24px}.guide-item{padding-top:16px}.guide-item h3{font-size:20px}.guide-item p{font-size:13px}.faq-layout{grid-template-columns:1fr;gap:25px}.faq-layout>div>p:not(.eyebrow){margin-top:16px;font-size:13px}.faq-layout>div>p:not(.eyebrow) br{display:none}.faq-list summary{font-size:14px;padding-top:18px;padding-bottom:18px}.history-section{padding-top:0}.history-grid{grid-template-columns:1fr;gap:13px}.history-card{padding:23px}.history-year{float:left;font-size:30px;margin:0 20px 0 0}.history-card h3{font-size:17px}.footer-top{flex-wrap:wrap;gap:23px}.footer-top>p{flex-basis:50%;font-size:11px}.share-button{min-height:44px;width:100%;justify-content:space-between}.footer-bottom{display:block;margin-top:22px;font-size:10px}.footer-bottom>a{display:inline-flex;align-items:center;margin-top:12px;min-height:30px}.site-footer{padding-top:27px}}
@media(max-width:380px){.container{width:calc(100% - 32px)}.hero h1{font-size:32px}.hero-meta{gap:16px}.hero-meta strong{font-size:12px}.hero-actions{gap:8px}.hero-actions .button{font-size:12px;padding:11px 13px;gap:12px}.art-topline>span:first-child{font-size:7px}.art-stage{min-height:238px}.art-network{height:238px}.art-badge strong{font-size:13px}.art-badge{padding:10px 12px}.art-badge-build{left:0}.art-bottomline{font-size:7px}.role-tabs button{font-size:11px;padding:11px 9px}.role-tabs button>span{font-size:9px;margin-right:5px}.participation-panel{padding:23px 20px}.schedule-tabs button{font-size:11px;padding-inline:4px}.registration-form{padding:23px 18px}.form-row{grid-template-columns:1fr;gap:0}.form-heading>span{font-size:10px}.history-year{float:none;margin-bottom:10px}.history-card h3{font-size:18px}.opc-flow{font-size:11px;gap:10px}.wordmark-number{font-size:31px}.wordmark-city{font-size:11px}}
/* Keep navigation usable if scripting is unavailable. */
@media(max-width:900px){body:not(.is-enhanced) .header-inner{height:auto;min-height:75px;flex-wrap:wrap;padding-top:17px}body:not(.is-enhanced) .nav-toggle{display:none}body:not(.is-enhanced) .primary-nav{display:flex;position:static;flex:1 1 100%;border:0;box-shadow:none;padding:0 0 15px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}

/* Six-page layout. Each anchor receives the header offset once. */
:root{--anchor-offset:102px}
html{scroll-padding-top:0}
.section-anchor,.home-section,.page-intro,main>section[id],main :is(h2,h3,details)[id]{scroll-margin-top:var(--anchor-offset)}
.primary-nav>a{position:relative}
.primary-nav>a[aria-current=page]:not(.nav-cta){color:var(--orange)}
.primary-nav>a[aria-current=page]:not(.nav-cta)::after{content:"";position:absolute;left:0;right:0;bottom:3px;height:2px;background:var(--orange);border-radius:2px}
.primary-nav .nav-cta[aria-current=page]{background:var(--orange);color:var(--white)}
.page-intro{padding:43px 0 36px;border-bottom:1px solid var(--line);background:radial-gradient(circle at 92% 5%,#f0eee3,transparent 42%)}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:25px;font-size:12px;color:var(--muted);line-height:1.6}
.breadcrumb a{display:inline-flex;align-items:center;min-height:28px;text-decoration:underline;text-underline-offset:3px}
.breadcrumb :is(span,i){font-style:normal}
.breadcrumb [aria-current=page]{color:var(--ink)}
.page-kicker{font-family:var(--mono);font-size:11px;font-weight:650;letter-spacing:.09em;color:var(--orange);line-height:1.6;margin-bottom:13px}
.page-intro h1{font-size:clamp(35px,4.2vw,52px);font-weight:760;line-height:1.3;max-width:840px;text-wrap:balance}
.page-description{max-width:760px;margin-top:18px;color:var(--muted);font-size:16px;line-height:1.8}
.page-actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:24px}
.page-local-nav{display:flex;align-items:center;flex-wrap:wrap;gap:8px 20px;padding:18px 0 0;margin-top:28px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.page-local-nav>a{min-height:35px;display:inline-flex;align-items:center;gap:8px;text-decoration:underline;text-decoration-color:#c7cec1;text-underline-offset:5px}
.page-local-nav>a:hover{color:var(--orange);text-decoration-color:var(--orange)}
body[data-page]:not([data-page=home]) .section{padding-top:48px;padding-bottom:64px}
body[data-page]:not([data-page=home]) .section-heading{margin-bottom:30px}
body[data-page]:not([data-page=home]) .history-section{padding-top:0}
body[data-page]:not([data-page=home]) .registration-intro h2{font-size:clamp(28px,2.7vw,36px)}
body[data-page]:not([data-page=home]) .registration-intro h2 br{display:none}

/* Home: clear routes to detail pages, with a short editorial overview. */
body[data-page=home] .hero{padding-top:58px}
body[data-page=home] .hero-description{margin:22px 0 24px}
body[data-page=home] .hero-foot{margin-top:43px;padding:18px 0}
.home-section{padding:58px 0}
.home-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:25px}
.home-heading h2{font-size:clamp(26px,3vw,36px);line-height:1.4}
.home-heading .eyebrow{margin-bottom:11px}
.home-heading>p{max-width:400px;font-size:14px;color:var(--muted);line-height:1.8}
.home-heading>a{font-size:13px;font-weight:650;min-height:36px;display:inline-flex;align-items:center;gap:12px;color:var(--orange);white-space:nowrap}
.role-entry-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.role-entry-card{display:flex;flex-direction:column;align-items:flex-start;min-width:0;min-height:215px;padding:25px 23px;border:1px solid var(--line);border-radius:12px;background:var(--white);color:var(--ink);transition:border-color .18s,background .18s,transform .18s}
.role-entry-card:hover{border-color:#c29579;background:#fffaf3;color:var(--ink);transform:translateY(-2px)}
.role-entry-number{display:block;margin-bottom:16px;font:11px var(--mono);letter-spacing:.06em;color:var(--orange)}
.role-entry-card h3{font-size:20px;margin-bottom:11px;line-height:1.45}
.role-entry-card p{font-size:13px;color:var(--muted);line-height:1.75}
.entry-link{display:inline-flex;align-items:center;gap:18px;margin-top:auto;padding-top:17px;color:var(--orange);font-size:12px;font-weight:650;line-height:1.5}
.entry-link span{font-size:17px}
.role-entry-card:nth-child(3),.role-entry-card:nth-child(4){background:#f1f5eb;border-color:#c9d5bf}
.role-entry-card:nth-child(3):hover,.role-entry-card:nth-child(4):hover{background:#eaf0e1;border-color:#98ac8b}
.role-entry-card:nth-child(3) :is(.role-entry-number,.entry-link),.role-entry-card:nth-child(4) :is(.role-entry-number,.entry-link){color:var(--green)}
.home-activity-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.home-activity-card{min-width:0;padding:23px 25px;border-top:2px solid #c6cbbd;border-radius:0 0 9px 9px;background:#faf9f4}
.home-activity-card .eyebrow{font-size:10px;margin-bottom:10px}
.home-activity-card h3{font-size:21px;line-height:1.4;margin-bottom:11px}
.home-activity-card p:not(.eyebrow){font-size:13px;color:var(--muted);line-height:1.75}
.home-activity-card .entry-link{margin-top:0}
.home-activity-card:nth-child(2){border-color:#d59a79;background:#fff8ef}
.home-activity-card:nth-child(3){border-color:#9daf8f;background:#edf2e5}
.home-timeline{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.home-phase{position:relative;min-width:0;padding:22px 24px;border:1px solid var(--line);border-radius:11px;background:#fffdf8}
.home-phase .eyebrow,.home-phase>span{display:block;font-size:11px;line-height:1.6;color:var(--orange);margin-bottom:10px}
.home-phase h3{font-size:21px;line-height:1.45;margin-bottom:9px}
.home-phase p:not(.eyebrow){font-size:13px;color:var(--muted);line-height:1.75}
.home-phase:nth-child(3){background:#eef3e7;border-color:#bdccb0}
.home-phase:nth-child(3) .eyebrow,.home-phase:nth-child(3)>span{color:var(--green)}
.home-history{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.history-mini{display:flex;align-items:center;gap:23px;padding:23px 0;border-top:1px solid var(--line);min-width:0}
.history-mini>.history-year,.history-mini>span{float:none;flex-shrink:0;font:31px var(--mono);letter-spacing:-1.5px;color:#75846e;margin:0}
.history-mini>div{min-width:0;flex:1}
.history-mini h3{font-size:18px;line-height:1.45;margin-bottom:6px}
.history-mini p{font-size:12px;color:var(--muted);line-height:1.7}
.history-mini>a,.history-mini a{display:inline-flex;align-items:center;gap:12px;min-height:32px;font-size:12px;color:var(--orange);text-decoration:underline;text-underline-offset:3px}
.history-mini>a{flex-shrink:0}
@media(max-width:1100px){.role-entry-grid{gap:13px}.role-entry-card{padding:22px 19px}.role-entry-card h3{font-size:18px}.home-activity-grid{gap:15px}.home-activity-card{padding:22px}.home-heading h2{font-size:31px}}
@media(max-width:900px){:root{--anchor-offset:91px}.page-intro{padding-top:34px;padding-bottom:29px}.page-intro h1{font-size:39px}.page-description{font-size:15px}.home-section{padding:47px 0}.home-heading{margin-bottom:23px}.role-entry-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.role-entry-card{min-height:180px;padding:23px}.role-entry-card h3{font-size:21px}.role-entry-number{margin-bottom:12px}.home-activity-card{padding:20px 17px}.home-activity-card h3{font-size:19px}.home-phase{padding:20px}.home-phase h3{font-size:19px}.history-mini{gap:15px}.history-mini>a{font-size:11px}.history-mini h3{font-size:16px}.history-mini p{font-size:11px}.history-mini>.history-year,.history-mini>span{font-size:27px}body[data-page=home] .hero{padding-top:44px}body[data-page=home] .hero-foot{margin-top:34px}}
@media(max-width:680px){:root{--anchor-offset:87px}.primary-nav>a[aria-current=page]:not(.nav-cta)::after{right:auto;width:22px;bottom:5px}.page-intro{padding:26px 0 23px}.breadcrumb{margin-bottom:19px;font-size:11px;gap:6px}.page-kicker{font-size:10px;margin-bottom:10px}.page-intro h1{font-size:clamp(30px,7.5vw,39px);line-height:1.35}.page-description{font-size:14px;margin-top:14px;line-height:1.8}.page-description br{display:none}.page-actions{margin-top:19px;gap:10px}.page-actions .button{font-size:12px;padding:11px 15px;min-height:44px}.page-local-nav{margin-top:21px;padding-top:12px;gap:4px 17px;font-size:12px}.page-local-nav>a{min-height:33px}body[data-page]:not([data-page=home]) .section{padding-top:35px;padding-bottom:45px}body[data-page]:not([data-page=home]) .section-heading{margin-bottom:23px}body[data-page]:not([data-page=home]) .registration-intro h2{font-size:27px}body[data-page]:not([data-page=home]) .history-section{padding-top:0}body[data-page=home] .hero{padding-top:29px}body[data-page=home] .hero-grid{gap:24px}body[data-page=home] .hero h1{font-size:clamp(31px,8vw,39px)}body[data-page=home] .hero-description{font-size:14px;margin:17px 0 20px;line-height:1.75}body[data-page=home] .hero-actions{margin-top:20px}body[data-page=home] .hero-actions .button{min-height:44px;font-size:12px;gap:13px;padding:11px 15px}body[data-page=home] .hero-note{margin-top:12px;font-size:10px}body[data-page=home] .hero-art{padding:11px 16px;width:min(100%,380px);border-radius:13px}body[data-page=home] .art-topline{padding-bottom:8px}body[data-page=home] .art-stage{min-height:172px;height:172px;margin:5px -7px}body[data-page=home] .art-network{height:172px}body[data-page=home] .art-badge{padding:9px 12px;border-radius:7px}body[data-page=home] .art-badge strong{font-size:13px}body[data-page=home] .art-badge span{font-size:8px;margin-bottom:3px}body[data-page=home] .art-badge i{display:none}body[data-page=home] .art-badge-build{top:10px;left:5px}body[data-page=home] .art-badge-connect{bottom:10px;right:0}body[data-page=home] .art-coordinates{bottom:10px;left:10px;font-size:7px}body[data-page=home] .art-bottomline{padding-top:8px;font-size:7px}body[data-page=home] .art-cursor{font-size:18px}body[data-page=home] .hero-foot{margin-top:24px;padding:14px 0;gap:3px;font-size:10px}body[data-page=home] .hero-foot a{min-height:27px}.home-section{padding:34px 0}.home-heading{display:flex;align-items:flex-end;gap:15px;margin-bottom:18px}.home-heading h2{font-size:26px}.home-heading .eyebrow{font-size:9px;margin-bottom:8px}.home-heading>p{font-size:12px;max-width:170px}.home-heading>p br{display:none}.home-heading>a{font-size:11px;gap:8px;white-space:normal;text-align:right;justify-content:flex-end;min-width:65px}.role-entry-grid{gap:11px}.role-entry-card{min-height:171px;padding:19px 17px}.role-entry-card h3{font-size:18px;margin-bottom:8px;letter-spacing:-.035em}.role-entry-card p{font-size:12px;line-height:1.7}.role-entry-number{font-size:9px;margin-bottom:10px}.entry-link{font-size:11px;padding-top:13px;gap:12px}.home-activity-grid{grid-template-columns:1fr;gap:10px}.home-activity-card{padding:18px 20px}.home-activity-card .eyebrow{font-size:9px;margin-bottom:7px}.home-activity-card h3{font-size:20px;margin-bottom:8px}.home-activity-card p:not(.eyebrow){font-size:12px}.home-activity-card .entry-link{padding-top:10px}.home-timeline{grid-template-columns:1fr;gap:9px}.home-phase{padding:16px 20px}.home-phase .eyebrow,.home-phase>span{font-size:10px;margin-bottom:5px}.home-phase h3{font-size:18px;margin-bottom:6px}.home-phase p:not(.eyebrow){font-size:12px}.home-history{grid-template-columns:1fr;gap:0}.history-mini{padding:17px 0;gap:17px}.history-mini>.history-year,.history-mini>span{font-size:27px}.history-mini h3{font-size:16px;margin-bottom:4px}.history-mini p{font-size:11px}.history-mini a{font-size:11px;gap:8px;min-height:30px}.history-mini>a{max-width:73px;font-size:10px}.home-section:last-child{padding-bottom:27px}body[data-page=home] .site-footer{padding-top:24px}body[data-page=home] .footer-top{gap:18px}body[data-page=home] .footer-bottom{margin-top:16px;padding-top:13px}}
@media(max-width:380px){.page-intro h1{font-size:29px}.page-description{font-size:13px}.home-heading h2{font-size:24px}.home-heading>p{max-width:140px;font-size:11px}.role-entry-card{padding:17px 15px;min-height:175px}.role-entry-card h3{font-size:17px}.role-entry-card p{font-size:11px}.entry-link{font-size:10px}.home-activity-card h3{font-size:19px}.home-phase{padding:15px 18px}.history-mini{gap:13px}}
.field-help.is-uploading{padding:11px 13px;border:1px solid #d89133;border-left:5px solid var(--orange);border-radius:6px;background:#fff7ec;color:#8a4814;font-size:14px;font-weight:700;line-height:1.6}.field-help.is-success{color:var(--green);font-weight:650}.field-help.is-error{padding:11px 13px;border:1px solid #c94b32;border-left:5px solid #a7351c;border-radius:6px;background:#fff0ed;color:#8e2516;font-size:14px;font-weight:700;line-height:1.6}