.competition-intro{border-top:0!important;padding:55px 0 40px!important}.competition-intro h1{font-size:52px;line-height:1.1;margin:20px 0}.competition-intro>p{color:var(--muted)}.competition-note{max-width:760px;font-size:12px;line-height:1.7;color:var(--muted);border-left:3px solid #a7bb64;padding:10px 15px;background:#edf1e3}.competition-layout{display:grid;grid-template-columns:285px minmax(0,1fr);gap:35px;padding-top:30px!important;align-items:start}.task-sidebar{position:sticky;top:20px;padding-right:0}.sidebar-title{display:flex;justify-content:space-between;font-weight:700;margin-bottom:15px}.sidebar-title span{font:12px monospace;color:var(--muted)}.task-list{display:flex;flex-direction:column;gap:6px;margin-top:18px}.task-option{border:1px solid transparent;background:transparent;text-align:left;color:var(--ink);border-radius:7px;padding:13px 12px;display:block;width:100%}.task-option:hover{background:#edf1e3}.task-option.active{background:#e5ecd8;border-color:#b6c79b}.task-option strong{display:block;font-size:13px;margin-bottom:5px}.task-option small{font-size:10px;color:var(--muted)}.task-option .task-index{font:11px monospace;color:#819264;margin-right:8px}.current{color:#6d8a3d;font-weight:700}#taskDetail{min-height:450px;background:white;border:1px solid var(--line);border-radius:11px;padding:32px;outline:0}.task-welcome{padding:70px 15px;text-align:center}.welcome-symbol{font:40px monospace;color:#91a958}.task-welcome h2{font-size:27px}.task-welcome p{color:var(--muted);font-size:13px}.welcome-tags{display:flex;justify-content:center;gap:10px;margin-top:25px}.task-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}.task-meta .pill{font-size:9px}.task-heading{font-size:34px;letter-spacing:-1px;margin:0 0 10px}.original-title{font-size:13px;color:var(--muted);margin-top:0}.source-links{display:flex;gap:16px;flex-wrap:wrap;font-size:12px;margin:18px 0 28px}.source-links a{border-bottom:1px solid #9bb17a;padding-bottom:3px}.task-section{margin-top:27px;border-top:1px solid var(--line);padding-top:17px}.task-section h3{font-size:20px;letter-spacing:-.5px;margin:6px 0 14px}.task-section p,.task-section li{font-size:14px;line-height:1.85}.task-section li{padding:4px 0}.io-grid,.sample-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.io-grid h4,.sample-grid h4{font-size:12px;margin:12px 0 7px}.io-grid p{margin-top:0;font-size:13px}.sample-grid pre{margin-top:5px;background:#eef2e7;color:var(--ink);font-size:13px}.complexity{font-size:13px;background:#f0f3e9;padding:12px 15px;border-radius:6px}.task-codehead{display:flex;justify-content:space-between;align-items:center;gap:10px}.task-codehead button{font-size:12px;padding:8px 12px}.task-code{max-height:none;white-space:pre;line-height:1.7}.task-pager{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--line);margin-top:30px;padding-top:20px}.task-pager button{font-size:12px}.empty-search{font-size:13px;color:var(--muted)}.task-back{border:0;background:transparent;padding:0;color:var(--muted);font-size:11px;margin-bottom:22px}.continue-link{display:block;font-size:12px}.task-section .callout{font-size:13px;line-height:1.7}@media(max-width:1000px){header{padding-left:24px;padding-right:24px}nav{gap:18px}.competition-layout{grid-template-columns:235px minmax(0,1fr);gap:22px}#taskDetail{padding:24px}}@media(max-width:850px){nav>a.competition-link,nav>a.continue-link{display:block}.competition-layout{grid-template-columns:1fr}.task-sidebar{position:static;display:block}.task-sidebar .aside-note{display:none}.task-list{display:grid;grid-template-columns:1fr 1fr}.task-welcome{padding:35px 10px}.competition-intro h1{font-size:43px}.task-heading{font-size:30px}}@media(max-width:520px){header{flex-wrap:wrap;gap:16px}nav{width:100%;justify-content:space-between}.task-list{grid-template-columns:1fr}.io-grid,.sample-grid{grid-template-columns:1fr;gap:0}#taskDetail{padding:20px}.competition-intro{padding-top:32px!important}.task-pager button{padding:10px}.source-links{gap:12px}}

.task-theme h3{font:700 12px 'DM Sans',sans-serif;letter-spacing:0;margin:18px 0 4px}.task-theme>p{font-size:10px;color:var(--muted);margin:0 0 8px}.task-theme:first-child h3{margin-top:0}.difficulty{font-weight:600;color:#718d40}.event-title{font-size:12px;line-height:1.6;color:#718d40;margin:0 0 6px}.task-list{display:flex!important;flex-direction:column}

.source-links .solve-editor{background:#20382d;color:#fff;border-radius:6px;padding:10px 14px;text-decoration:none;font-weight:600}

.task-category{border:1px solid var(--line);border-radius:9px;background:#f7f9f1;margin-bottom:8px;overflow:hidden}.task-category>summary{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:15px 12px;font-size:12px;font-weight:700;cursor:pointer;list-style:none}.task-category>summary::before{content:'▸';color:#718d40}.task-category[open]>summary::before{content:'▾'}.task-category>summary span:first-child{flex:1}.category-count{font:10px monospace;color:var(--muted)}.category-body{padding:0 8px 8px}.task-theme{border-top:1px solid var(--line)}.task-theme>summary{padding:13px 3px;cursor:pointer;font-size:11px;font-weight:600;line-height:1.6}.task-theme>p{padding:0 5px;font-size:10px;line-height:1.6}.task-availability{display:block;font-size:9px;color:var(--muted);margin-top:7px;line-height:1.5}.task-availability.ready{color:#4e702c}.catalogue-filters{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}.catalogue-filters label{font-size:10px;color:var(--muted)}.catalogue-filters select{width:100%;margin-top:5px;padding:8px 5px;font-size:11px}.catalogue-filters label:nth-child(3){grid-column:1/-1}.catalogue-filters button{text-align:left;margin:0}.task-list{max-height:70vh;overflow:auto;scrollbar-width:thin}.task-sidebar{position:static}.task-source{font-size:11px;line-height:1.8;margin:22px 0 0;color:var(--muted)}.task-source a{text-decoration:underline;text-underline-offset:3px}.task-source a:hover{color:var(--ink)}.catalogue-notice{background:#f4f6ed;border-radius:9px;padding:20px}.task-category summary:focus-visible,.task-option:focus-visible{outline:2px solid #789443;outline-offset:-2px}.task-option{transition:background .15s}.task-option strong{overflow-wrap:anywhere}@media(max-width:850px){.task-list{max-height:50vh}.catalogue-filters{grid-template-columns:1fr 1fr 1fr}.catalogue-filters label:nth-child(3){grid-column:auto}}@media(max-width:520px){.catalogue-filters{grid-template-columns:1fr 1fr}.catalogue-filters label:nth-child(3){grid-column:1/-1}}@media(prefers-reduced-motion:reduce){.task-option{transition:none}}

/* Explorer folders occupy their full natural height; never shrink and clip
   expanded children inside the scrollable flex column. */
.task-list{gap:0;border:1px solid var(--line);border-radius:8px;padding:5px 0;background:#f7f9f1;overflow:auto}
.task-category{flex:0 0 auto;border:0;border-radius:0;margin:0;background:transparent;overflow:visible}
.task-category>summary{justify-content:flex-start;padding:10px 12px;gap:7px;transition:background .15s;min-height:40px}
.task-category>summary:hover,.task-theme>summary:hover{background:#edf1e3}
.task-category>summary span:first-child{flex:0 0 auto}
.task-category>summary .folder-name{flex:1}
.folder-icon{color:#809647;font-size:20px;line-height:1}
.task-category>summary::before{display:inline-block;width:10px;flex:0 0 10px}
.category-body{margin:0 0 5px 24px;padding:0 0 0 8px;border-left:1px solid #d8dfca}
.task-theme{border:0;margin:0}
.task-theme>summary{padding:8px 8px;font-size:11px;border-radius:3px}
.task-theme .category-count{margin-left:5px}
.task-theme .task-option{position:relative;margin-left:13px;width:calc(100% - 17px);padding:8px 9px 8px 18px;border-radius:3px}
.task-theme .task-option::before{content:'·';position:absolute;left:6px;top:7px;color:#91a372}
.task-option strong{font-size:12px;margin-bottom:3px}
.task-availability{margin-top:3px;font-size:9px}
@media(prefers-reduced-motion:reduce){.task-category>summary{transition:none}}
/* Long Beginner code samples scroll within their card on narrow screens. */
body[data-competition-category="beginner"] .competition-layout>*{min-width:0}
@media(max-width:850px){body[data-competition-category="beginner"] .competition-layout{grid-template-columns:minmax(0,1fr)}}

/* Professional uses the existing archive layout and internal code scrolling. */
body[data-competition-category="professional"] .competition-layout>*{min-width:0}
@media(max-width:850px){body[data-competition-category="professional"] .competition-layout{grid-template-columns:minmax(0,1fr)}}
body[data-competition-category="professional"] .sample-grid>*{min-width:0}
body[data-competition-category="professional"] .sample-grid pre{max-width:100%;overflow-x:auto}

body[data-competition-category="intermediate"] .competition-layout>*{min-width:0}
@media(max-width:850px){body[data-competition-category="intermediate"] .competition-layout{grid-template-columns:minmax(0,1fr)}}
body[data-competition-category="intermediate"] .sample-grid>*{min-width:0}
body[data-competition-category="intermediate"] .sample-grid pre{max-width:100%;overflow-x:auto}

/* Expert reuses the existing responsive competition layout. */

body[data-competition-category="expert"] .competition-layout>*{min-width:0}
@media(max-width:850px){body[data-competition-category="expert"] .competition-layout{grid-template-columns:minmax(0,1fr)}}
body[data-competition-category="expert"] .sample-grid>*{min-width:0}
body[data-competition-category="expert"] .sample-grid pre{max-width:100%;overflow-x:auto}