:root{--bg:#0a0e19;--side:#101524;--panel:#121a2a;--panel-2:#171f30;--panel-3:#1b2638;--soft:#222d40;--line:#263043;--border:var(--line);--line-light:#313c50;--text:#eff4ff;--muted:#91a0b7;--muted-2:#627189;--mint:#73ead0;--mint-dark:#1c4e4c;--purple:#a8a9fa;--orange:#ffbe87;--blue:#82bbff;--red:#ff7d94;--shadow:0 24px 70px rgba(0,0,0,.22);--radius:20px;--mono:'JetBrains Mono',Consolas,monospace;--font:'DM Sans',system-ui,sans-serif;--heading:'Outfit',system-ui,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.6 var(--font);overflow-x:hidden}button,input,textarea,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.52}a{color:inherit;text-decoration:none}::selection{background:#61d9c065;color:#fff}::-webkit-scrollbar{width:9px;height:9px}::-webkit-scrollbar-thumb{background:#334057;border:2px solid var(--bg);border-radius:20px}::-webkit-scrollbar-track{background:transparent}
.app-shell{min-height:100vh;display:flex}.sidebar{width:267px;min-width:267px;background:var(--side);border-right:1px solid var(--line);height:100vh;position:sticky;top:0;display:flex;flex-direction:column;z-index:25}.brand-zone{padding:29px 22px 29px}.brand{display:flex;align-items:center;gap:12px;width:max-content}.brand-mark{width:54px;height:51px;background:linear-gradient(145deg,#294843,#18322f);border:1px solid #3c6a64;color:var(--mint);border-radius:15px;font:800 29px/.9 var(--heading);display:flex;justify-content:center;align-items:center;letter-spacing:-2px}.brand-slashes{font:800 13px var(--mono);letter-spacing:-3px;margin:12px 0 0 2px}.brand-words{font:900 25px/.95 var(--heading);letter-spacing:-1.5px}.brand-dot{color:var(--mint)}.brand-words small{font:600 8px var(--mono);display:block;letter-spacing:1.9px;color:var(--muted);margin-top:6px}.sidebar-scroll{padding:4px 13px 20px;overflow-y:auto;flex:1;scrollbar-width:thin}.side-caption,.side-heading{font:700 10px var(--mono);letter-spacing:1.7px;color:var(--muted-2);margin:18px 15px 13px}.side-nav{display:grid;gap:4px}.side-link,.module-button{display:flex;align-items:center;border:1px solid transparent;background:transparent;color:var(--muted);border-radius:11px;text-align:left;width:100%;transition:.18s;gap:12px}.side-link{padding:11px 14px;font-weight:700}.side-link svg{width:19px;height:19px;stroke-width:1.8}.side-link:hover,.module-button:hover{background:var(--panel-2);color:var(--text)}.side-link.active{background:#233534;color:var(--mint);border-color:#33534e}.nav-count{margin-left:auto;color:var(--muted-2);font:600 11px var(--mono)}.side-divider{height:1px;background:var(--line);margin:25px 10px 22px}.side-heading{display:flex;justify-content:space-between;align-items:center}.side-percent{color:var(--mint);letter-spacing:0}.side-progress-track{height:5px;background:var(--soft);border-radius:12px;margin:0 14px 16px;overflow:hidden}.side-progress-track span{display:block;width:0;height:100%;border-radius:inherit;background:var(--mint);transition:width .45s}.module-nav{display:grid;gap:3px}.module-button{padding:11px 12px;gap:10px}.module-num{font:600 11px var(--mono);color:var(--muted-2);min-width:24px}.module-text{flex:1;min-width:0}.module-text strong{font-size:12px;display:block;font-weight:700}.module-text small{display:block;font:500 10px var(--font);color:var(--muted-2);margin-top:1px}.module-button.active{color:var(--mint);background:#1c302f}.module-button.active .module-num{color:var(--mint)}.module-check{display:flex;color:var(--mint)}.module-check svg{width:16px;height:16px}.sidebar-footer{padding:16px 16px 18px;border-top:1px solid var(--line)}.footer-help{display:flex;gap:10px;align-items:center;padding:12px;background:#192239;border:1px solid #2b3952;border-radius:12px;margin-bottom:18px}.footer-help-icon{color:#f4d28e}.footer-help-icon svg{width:23px;height:23px}.footer-help strong,.user-line strong{display:block;font-size:11px;line-height:1.5}.footer-help small,.user-line small{display:block;color:var(--muted);font-size:10px}.user-line{display:flex;gap:10px;align-items:center;padding:0 5px}.avatar{width:33px;height:33px;border:1px solid #568e83;background:#26524c;color:var(--mint);border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:16px}.user-online{width:7px;height:7px;background:var(--mint);border-radius:50%;margin-left:auto;box-shadow:0 0 0 4px #1b3733}
.content-area{min-width:0;flex:1;display:flex;flex-direction:column;background:radial-gradient(circle at 70% -10%,#172c3742,transparent 29%),var(--bg)}.topbar{height:78px;min-height:78px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:15px;padding:0 43px;background:#0d121e99;backdrop-filter:blur(18px);position:sticky;top:0;z-index:15}.top-left,.top-actions{display:flex;align-items:center;gap:21px}.breadcrumb{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted)}.breadcrumb strong{font-weight:700;color:var(--text)}.sep{color:var(--muted-2)}.search-trigger{height:37px;width:244px;background:#192234;border:1px solid var(--line);border-radius:10px;color:var(--muted);display:flex;align-items:center;gap:9px;padding:0 10px;font-size:12px;text-align:left}.search-trigger svg{width:16px}.search-trigger kbd{margin-left:auto;border:1px solid var(--line-light);background:var(--panel);color:var(--muted-2);padding:2px 6px;border-radius:5px;font:10px var(--mono);white-space:nowrap}.top-divider{height:26px;width:1px;background:var(--line)}.compiler-indicator{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:11px;white-space:nowrap}.status-dot{height:7px;width:7px;border-radius:50%;background:#c8ac61}.compiler-indicator.online .status-dot{background:var(--mint);box-shadow:0 0 0 4px #69e9cc19}.compiler-indicator.offline .status-dot{background:var(--orange)}.icon-btn{height:35px;width:35px;border:1px solid var(--line);border-radius:10px;background:var(--panel-2);color:var(--muted);display:inline-grid;place-items:center}.icon-btn svg{width:18px;height:18px}.icon-btn:hover{border-color:var(--mint);color:var(--mint)}.mobile-only{display:none!important}#main{flex:1;width:min(1400px,100%);margin:0 auto;padding:39px 43px 65px}.main-footer{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding:19px 43px;color:var(--muted-2);font-size:11px}.footer-spark{color:var(--mint)}
.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--mint);font:700 10px var(--mono);letter-spacing:2px;text-transform:uppercase}.eyebrow:before{content:'';display:inline-block;width:18px;height:2px;background:var(--mint)}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:15px;margin:32px 0 17px}.section-heading h2{font:750 22px/1.3 var(--heading);letter-spacing:-.5px;margin:0}.section-heading p{margin:4px 0 0;color:var(--muted);font-size:12px}.text-link{background:none;border:0;color:var(--mint);font-size:12px;font-weight:700;display:inline-flex;align-items:center;gap:7px;padding:5px 0;white-space:nowrap}.text-link:hover{text-decoration:underline}.text-link svg{width:15px}.hero{min-height:316px;border:1px solid #2e4949;border-radius:var(--radius);background:radial-gradient(circle at 30% 110%,#2c655239,transparent 50%),linear-gradient(115deg,#142b30 0%,#182431 48%,#151c2b 100%);position:relative;overflow:hidden;display:grid;grid-template-columns:1.08fr 1fr;align-items:center;padding:39px 42px;gap:15px}.hero:before{content:'';position:absolute;inset:0;background-image:linear-gradient(#c8fbe807 1px,transparent 1px),linear-gradient(90deg,#c8fbe807 1px,transparent 1px);background-size:32px 32px;mask-image:linear-gradient(to left,#000,transparent 77%);pointer-events:none}.hero-copy{position:relative;z-index:2}.hero-tag{display:inline-flex;align-items:center;gap:7px;color:#b2f5e6;background:#2c544b;border:1px solid #44786e;padding:6px 10px;border-radius:7px;font:650 10px var(--mono);letter-spacing:.4px}.hero-tag svg{width:14px}.hero h1{font:800 clamp(30px,3.5vw,47px)/1.11 var(--heading);letter-spacing:-1.7px;margin:18px 0 13px;max-width:540px}.hero h1 em{font-style:normal;color:var(--mint)}.hero p{font-size:13px;color:#b1c2cf;line-height:1.8;max-width:430px;margin:0 0 23px}.hero-actions,.btn-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.btn{display:inline-flex;gap:9px;align-items:center;justify-content:center;min-height:40px;padding:10px 17px;font-size:12px;border-radius:10px;font-weight:800;border:1px solid transparent;transition:transform .2s,box-shadow .2s,border-color .2s}.btn:hover:not(:disabled){transform:translateY(-2px)}.btn svg{width:16px;height:16px}.btn-primary{background:var(--mint);color:#09271e;box-shadow:0 8px 20px #55cfb219}.btn-primary:hover{box-shadow:0 10px 30px #55cfb23c}.btn-secondary{background:#ffffff0b;border-color:#4b6470;color:#e6f9f5}.btn-ghost{background:var(--panel-2);color:var(--text);border-color:var(--line-light)}.btn-danger{border-color:#a94e63;color:#ffc2ce;background:#43232c}.hero-art{position:relative;z-index:2;min-height:220px;display:flex;align-items:center;justify-content:center}.floating-window{width:min(100%,428px);border:1px solid #496071;background:#111b2add;border-radius:15px;overflow:hidden;box-shadow:0 30px 65px #020b165c;transform:rotate(2.4deg);animation:floaty 7s ease-in-out infinite}.floating-top{height:36px;border-bottom:1px solid #2c3d4e;display:flex;align-items:center;gap:7px;padding:0 14px;color:#7e9aab;font:10px var(--mono)}.window-dot{height:8px;width:8px;border-radius:50%;background:#ef8890}.window-dot:nth-child(2){background:#f6c379}.window-dot:nth-child(3){background:#7bddad}.floating-top span:nth-child(4){margin-left:12px}.floating-code{margin:0;padding:18px 20px 23px;font:12px/1.85 var(--mono);color:#d6e5f0}.code-mint{color:#82f4d4}.code-purple{color:#b6b4ff}.code-orange{color:#fbd39c}.code-grey{color:#6d8298}.hero-chip{position:absolute;right:-8px;bottom:11px;display:flex;gap:9px;align-items:center;background:#244339;border:1px solid #417560;color:#9befd1;box-shadow:var(--shadow);padding:9px 13px;border-radius:10px;font:700 11px var(--mono);transform:rotate(-4deg)}.hero-chip svg{width:15px}@keyframes floaty{0%,100%{transform:translateY(0) rotate(2.4deg)}50%{transform:translateY(-7px) rotate(1deg)}}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px;margin-top:19px}.stat-card{border:1px solid var(--line);background:var(--panel);border-radius:16px;padding:17px 18px;position:relative;overflow:hidden}.stat-top{display:flex;justify-content:space-between;align-items:center;gap:10px}.stat-top span:first-child{font-size:11px;color:var(--muted);font-weight:600}.stat-icon{height:29px;width:29px;border-radius:9px;display:grid;place-items:center;background:#23423e;color:var(--mint)}.stat-icon.purple{color:#b6b6ff;background:#302d4d}.stat-icon.blue{color:#92c0ff;background:#293954}.stat-icon.orange{color:#ffce99;background:#453527}.stat-icon svg{width:16px;height:16px}.stat-value{margin-top:12px;font:750 29px/1 var(--heading);letter-spacing:-.6px}.stat-value small{font-size:14px;color:var(--muted);font-weight:500}.stat-foot{margin-top:8px;color:var(--muted-2);font-size:10px}.stat-progress{height:4px;width:100%;border-radius:9px;background:var(--soft);margin-top:14px;overflow:hidden}.stat-progress span{display:block;height:100%;background:var(--mint);border-radius:9px}.modules-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.module-card{min-height:197px;text-align:left;color:var(--text);background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:18px;display:flex;flex-direction:column;transition:transform .18s,border .18s,background .18s}.module-card:hover{border-color:var(--module-color,var(--mint));background:var(--panel-2);transform:translateY(-3px)}.module-card-top{display:flex;justify-content:space-between;align-items:center}.module-card-icon{height:39px;width:39px;border-radius:11px;background:color-mix(in srgb,var(--module-color) 15%,transparent);color:var(--module-color);display:grid;place-items:center}.module-card-icon svg{width:20px;height:20px}.module-card-index{font:700 11px var(--mono);color:var(--muted-2)}.module-card h3{font:700 16px/1.3 var(--heading);margin:17px 0 3px}.module-card p{font-size:11px;color:var(--muted);margin:0 0 14px}.module-card-bottom{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;color:var(--muted);font-size:10px}.module-card-bottom svg{width:16px;height:16px;color:var(--module-color)}.mini-track{margin-top:11px;height:4px;background:var(--soft);border-radius:5px;overflow:hidden}.mini-track>span{display:block;height:100%;background:var(--module-color);border-radius:5px}
.dashboard-bottom{display:grid;grid-template-columns:1.25fr 1fr;gap:17px;margin-top:22px}.feature-panel{border:1px solid var(--line);background:var(--panel);border-radius:17px;padding:22px;min-height:194px}.feature-title{font-size:11px;font-weight:700;color:var(--muted);display:flex;align-items:center;gap:8px}.feature-title svg{width:16px;color:var(--mint)}.feature-panel h3{font:700 19px var(--heading);margin:12px 0 4px}.feature-panel p{color:var(--muted);font-size:12px;margin:0 0 18px;line-height:1.75}.feature-panel .btn{min-height:35px;padding:7px 12px}.challenge-layout{display:flex;gap:17px;align-items:center;justify-content:space-between}.challenge-glyph{height:94px;width:92px;border-radius:16px;background:#263f3c;display:grid;place-items:center;color:var(--mint);flex-shrink:0}.challenge-glyph svg{width:38px;height:38px}.small-lesson-list{display:grid;gap:9px}.small-lesson{display:flex;gap:11px;align-items:center;background:var(--panel-2);border:1px solid var(--line);border-radius:11px;text-align:left;padding:12px 14px;color:var(--text)}.small-lesson:hover{border-color:var(--mint)}.small-lesson-icon{height:32px;width:32px;border-radius:9px;display:grid;place-items:center;color:var(--mint);background:#244039}.small-lesson-icon svg{width:17px}.small-lesson strong{font-weight:700;display:block;font-size:12px}.small-lesson small{font-size:10px;color:var(--muted)}.small-lesson-arrow{margin-left:auto;color:var(--muted)}.small-lesson-arrow svg{width:17px}
.page-intro{margin-bottom:27px}.page-intro h1{font:800 clamp(28px,3.3vw,39px)/1.15 var(--heading);letter-spacing:-1px;margin:12px 0 9px}.page-intro p{font-size:13px;color:var(--muted);max-width:690px;line-height:1.8;margin:0}.path-header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 24px;border:1px solid #3d5b57;background:linear-gradient(115deg,#17332e,#192534);border-radius:16px;margin:24px 0}.path-header strong{font:750 17px var(--heading)}.path-header p{color:#b0c6c4;font-size:11px;margin:4px 0 0}.path-ring{height:74px;width:74px;border-radius:50%;display:grid;place-items:center;flex-shrink:0}.path-ring>span{height:60px;width:60px;display:grid;place-items:center;border-radius:50%;background:#1b2c32;font:800 19px var(--heading)}.curriculum-section{margin:25px 0}.curriculum-top{display:flex;gap:13px;align-items:center;margin-bottom:12px}.curriculum-index{width:46px;height:46px;display:grid;place-items:center;border-radius:13px;border:1px solid var(--line-light);background:var(--panel-2);color:var(--module-color);font:800 14px var(--mono)}.curriculum-top h2{font:750 19px var(--heading);margin:0}.curriculum-top p{font-size:11px;color:var(--muted);margin:1px 0}.curriculum-top>span:last-child{margin-left:auto;font-size:11px;color:var(--muted)}.lesson-list{border:1px solid var(--line);background:var(--panel);border-radius:15px;overflow:hidden}.lesson-row{width:100%;padding:15px 18px;display:flex;gap:14px;align-items:center;text-align:left;background:transparent;border:0;color:var(--text);border-bottom:1px solid var(--line);transition:.16s}.lesson-row:last-child{border:0}.lesson-row:hover{background:var(--panel-2)}.lesson-number{height:34px;width:34px;border-radius:10px;background:#263146;display:grid;place-items:center;color:var(--muted);font:700 12px var(--mono);flex-shrink:0}.lesson-number.done{background:#24443d;color:var(--mint)}.lesson-row-main{min-width:0;flex:1}.lesson-row-main strong{display:block;font-size:13px;font-weight:700}.lesson-row-main small{display:block;font-size:11px;color:var(--muted);margin-top:2px}.lesson-row-side{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:10px}.lesson-row-side svg{width:16px}.pill{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line-light);border-radius:7px;padding:4px 8px;font:600 10px var(--mono);color:var(--muted)}.pill.mint{color:var(--mint);border-color:#376a5d;background:#1a3530}.pill.orange{color:var(--orange);border-color:#5b4933;background:#362b20}
.lesson-page{max-width:1150px}.lesson-top{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:11px;margin-bottom:18px}.back-link{display:inline-flex;align-items:center;gap:7px;color:var(--muted);font-size:11px;background:transparent;border:0;padding:0}.back-link:hover{color:var(--mint)}.back-link svg{width:15px}.lesson-top .lesson-divider{color:var(--muted-2)}.lesson-title-row{display:flex;justify-content:space-between;align-items:flex-start;gap:20px}.lesson-title-row h1{font:800 clamp(29px,4vw,43px)/1.1 var(--heading);letter-spacing:-1.1px;margin:11px 0 12px}.lesson-title-row p{color:var(--muted);font-size:13px;line-height:1.75;max-width:710px;margin:0}.lesson-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:17px}.lesson-meta .pill{padding:6px 10px}.lesson-content-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(270px,.8fr);gap:18px;margin-top:29px;align-items:start}.content-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:24px;margin-bottom:17px}.content-card h2,.content-card h3{font:750 21px var(--heading);letter-spacing:-.3px;margin:0 0 17px}.content-card h3{font-size:16px}.content-card p{font-size:13px;line-height:1.93;color:#b8c6d8;margin:0 0 13px}.content-card p:last-child{margin-bottom:0}.content-card .prose-label{display:flex;align-items:center;gap:9px;margin-bottom:16px;color:var(--mint);font:700 11px var(--mono)}.content-card .prose-label svg{width:17px}.keypoint-list{display:grid;gap:14px}.keypoint{display:flex;align-items:flex-start;gap:10px;color:#c6d1df;font-size:12px;line-height:1.6}.keypoint svg{width:17px;height:17px;color:var(--mint);flex-shrink:0;margin-top:2px}.lesson-side-card{position:sticky;top:98px}.lesson-side-card h3{margin:0 0 15px;font:750 16px var(--heading)}.step-list{display:grid;gap:13px}.step-list-item{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted)}.step-list-item span{display:grid;place-items:center;width:27px;height:27px;background:var(--panel-2);border:1px solid var(--line-light);border-radius:8px;color:var(--mint);font:700 11px var(--mono)}.lesson-tip{background:#1b3431;border:1px solid #345e56;border-radius:12px;margin-top:18px;padding:15px;color:#b9e6d9;font-size:11px;line-height:1.7}.lesson-tip strong{display:block;color:var(--mint);margin-bottom:4px}.example-code-wrap{border:1px solid var(--line-light);border-radius:12px;overflow:hidden;background:#0a1120}.code-head{background:#182235;border-bottom:1px solid var(--line);padding:10px 13px;display:flex;align-items:center;justify-content:space-between;color:var(--muted);font:600 10px var(--mono)}.code-head-left{display:flex;gap:8px;align-items:center}.code-file-mark{display:inline-flex;align-items:center;justify-content:center;background:#234840;color:var(--mint);border-radius:4px;width:19px;height:19px;font:800 10px var(--mono)}.copy-code{display:flex;gap:6px;align-items:center;background:none;border:0;color:var(--muted);font-size:10px}.copy-code:hover{color:var(--mint)}.copy-code svg{width:14px;height:14px}.example-pre{padding:17px;overflow:auto;margin:0;color:#d8e4f1;font:11.8px/1.85 var(--mono);tab-size:4}.tok-keyword{color:#b9a9ff}.tok-type{color:#81decb}.tok-str{color:#f0bf96}.tok-comment{color:#718299;font-style:italic}.tok-number{color:#c9dc94}.tok-preprocessor{color:#92b9ff}.tok-func{color:#8fccfa}
.practice-panel{margin-top:15px;background:var(--panel);border:1px solid var(--line);border-radius:17px;overflow:hidden}.practice-header{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:21px 23px 18px}.practice-header h2{font:750 21px var(--heading);margin:0 0 6px}.practice-header p{font-size:12px;color:var(--muted);margin:0;line-height:1.7}.practice-content{padding:0 23px 22px}.practice-target{background:#192537;border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin:14px 0;font-size:12px;color:#b9c7d6}.practice-target strong{color:var(--mint)}.editor-shell{border:1px solid var(--line-light);border-radius:12px;overflow:hidden;background:#0b1220}.editor-toolbar{min-height:39px;padding:0 12px;background:#182237;border-bottom:1px solid #2c3b51;display:flex;align-items:center;justify-content:space-between;gap:12px}.editor-toolbar-left,.editor-toolbar-right{display:flex;gap:10px;align-items:center;font:600 10px var(--mono);color:var(--muted)}.editor-toolbar-left .file-indicator{color:var(--mint)}.window-lights{display:flex;gap:5px}.window-lights i{width:7px;height:7px;border-radius:50%;background:#ed778a}.window-lights i:nth-child(2){background:#ecbd6a}.window-lights i:nth-child(3){background:#7ed9b1}.editor-body{display:flex;align-items:stretch;position:relative;min-height:260px;max-height:620px}.line-numbers{flex-shrink:0;width:45px;background:#0d1625;border-right:1px solid #223047;padding:15px 9px 15px 0;text-align:right;color:#607189;font:12px/22px var(--mono);white-space:pre;overflow:hidden;user-select:none}.code-edit-area{position:relative;flex:1;min-width:0;overflow:hidden}.code-edit-area pre,.code-edit-area textarea{margin:0;padding:15px 16px;position:absolute;inset:0;width:100%;height:100%;border:0;outline:0;resize:none;tab-size:4;white-space:pre;overflow:auto;overflow-wrap:normal;font:12px/22px var(--mono);letter-spacing:0;background:transparent}.code-edit-area pre{pointer-events:none;color:#d7e4ef;scrollbar-width:none}.code-edit-area pre::-webkit-scrollbar{display:none}.code-edit-area textarea{color:transparent;-webkit-text-fill-color:transparent;caret-color:#7fefd4;z-index:2}.code-edit-area textarea::selection{background:#68b5e655}.code-edit-area textarea::placeholder{color:var(--muted-2);-webkit-text-fill-color:var(--muted-2)}.editor-status{background:#121d30;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;padding:7px 13px;font:10px var(--mono);color:var(--muted-2)}.practice-controls{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:15px 0}.practice-control-right{display:flex;gap:9px;align-items:center;flex-wrap:wrap}.inline-hint{border:1px solid #4d4434;background:#30291c;color:#e9cfa4;border-radius:10px;font-size:12px;padding:12px 14px;margin:0 0 14px}.result-area{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#0d1525;min-height:77px}.result-head{padding:10px 13px;background:#171f30;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);color:#bac5d6;font:700 11px var(--mono)}.result-placeholder{padding:17px;color:var(--muted-2);font:11px/1.8 var(--mono)}.result-output{margin:0;padding:15px 17px;font:11.5px/1.8 var(--mono);color:#d1eadd;white-space:pre-wrap;overflow-wrap:anywhere;max-height:300px;overflow:auto}.result-output.error{color:#ffb1bc}.test-list{display:grid;gap:8px;padding:13px}.test-result{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;border:1px solid var(--line);border-radius:9px;padding:11px 12px;font-size:11px}.test-result.pass{border-color:#2d574c;background:#122f2a}.test-result.fail{border-color:#6b3a46;background:#3a2029}.test-result strong{font-weight:700}.test-result small{color:var(--muted);display:block;font:10px/1.7 var(--mono);margin-top:4px;white-space:pre-wrap;word-break:break-word}.test-result.pass .test-mark{color:var(--mint)}.test-result.fail .test-mark{color:var(--red)}.quiz-box{margin-top:22px;padding:23px;border:1px solid var(--line);border-radius:16px;background:var(--panel)}.quiz-box h3{font:750 18px var(--heading);margin:0 0 5px}.quiz-box>p{color:var(--muted);font-size:12px;margin:0 0 20px}.quiz-question{font-weight:700;font-size:13px;margin-bottom:13px}.quiz-answers{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.quiz-option{display:flex;align-items:center;gap:11px;padding:12px;border-radius:10px;text-align:left;background:var(--panel-2);border:1px solid var(--line);color:var(--text);font-size:12px}.quiz-option:hover:not(:disabled){border-color:var(--purple)}.quiz-option.selected{border-color:var(--purple);background:#252b43}.quiz-option.correct{border-color:var(--mint);background:#1d3833}.quiz-option.incorrect{border-color:var(--red);background:#412a33}.quiz-option-letter{height:23px;width:23px;border-radius:7px;border:1px solid #465168;display:grid;place-items:center;font:700 10px var(--mono);flex-shrink:0}.quiz-feedback{padding:12px 14px;margin-top:13px;border-radius:10px;font-size:12px;background:#1e3631;border:1px solid #385c52;color:#b8eadb}.quiz-feedback.bad{color:#ffbec6;background:#3b262e;border-color:#69414c}.lesson-next{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:22px}.next-label{font:700 10px var(--mono);color:var(--muted-2);letter-spacing:1px}.next-name{display:block;font:700 16px var(--heading);margin-top:3px}
.playground-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(300px,.85fr);gap:17px;align-items:start}.playground-left,.playground-right{min-width:0}.surface-card{border:1px solid var(--line);background:var(--panel);border-radius:16px;padding:20px;margin-bottom:17px}.surface-heading{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:15px}.surface-heading h2{font:750 17px var(--heading);margin:0}.surface-heading small{color:var(--muted);font-size:11px}.select-input{max-width:220px;width:100%;background:var(--panel-2);border:1px solid var(--line-light);color:var(--text);padding:8px 10px;border-radius:9px;font:11px var(--font);outline:0}.stdin-label{font-size:11px;color:var(--muted);font-weight:700;margin:12px 0 8px;display:block}.stdin-textarea{display:block;width:100%;background:#0c1422;border:1px solid var(--line-light);border-radius:10px;resize:vertical;min-height:94px;padding:11px 12px;color:var(--text);font:12px/1.65 var(--mono);outline:0}.stdin-textarea:focus{border-color:var(--mint)}.console-legend{display:flex;gap:14px;align-items:center;margin-top:13px;color:var(--muted-2);font-size:10px}.console-legend span{display:flex;align-items:center;gap:6px}.console-legend i{height:7px;width:7px;border-radius:50%;background:var(--mint)}.console-legend span:last-child i{background:var(--orange)}.compiler-help{display:flex;gap:12px;align-items:flex-start;border:1px solid #554b34;background:#302b20;border-radius:11px;padding:13px;color:#f2cfa4;font-size:11px;line-height:1.7}.compiler-help svg{width:18px;flex-shrink:0}.compiler-help strong{display:block;color:#ffdda7}
.flashcard-layout{display:grid;grid-template-columns:1fr 320px;gap:22px;align-items:start}.flashcard-stage{min-height:330px;cursor:pointer;perspective:1200px}.flashcard-inner{height:330px;position:relative;transform-style:preserve-3d;transition:transform .55s}.flashcard-stage.is-flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;border-radius:21px;border:1px solid #39544f;background:radial-gradient(circle at 50% 100%,#24574766,transparent 65%),linear-gradient(135deg,#1a3236,#192132);padding:34px}.flashcard-face.back{transform:rotateY(180deg);border-color:#5c5c91;background:radial-gradient(circle at 50% 100%,#5453a766,transparent 65%),linear-gradient(135deg,#272847,#192132)}.flashcard-face .flash-icon{height:47px;width:47px;border-radius:15px;background:#2b5249;color:var(--mint);display:grid;place-items:center;margin-bottom:25px}.flashcard-face.back .flash-icon{background:#474472;color:#c9caff}.flashcard-face .flash-icon svg{width:23px}.flashcard-face span{font:700 11px var(--mono);color:var(--muted);letter-spacing:1.5px;text-transform:uppercase}.flashcard-face h2{font:750 clamp(18px,3vw,28px)/1.4 var(--heading);margin:18px 0}.flashcard-face small{color:var(--muted);font-size:11px;margin-top:10px}.flash-actions{display:flex;gap:10px;justify-content:center;margin-top:19px}.flash-counter{display:flex;gap:6px;align-items:center;justify-content:center;margin-top:16px;color:var(--muted);font:11px var(--mono)}.flash-stat{padding:17px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px}.flash-stat:last-child{border:0}.flash-stat strong{color:var(--text);font:750 18px var(--heading)}.flash-help{margin-top:16px;color:var(--muted);font-size:12px;line-height:1.8}.flash-progress{height:7px;background:var(--soft);border-radius:10px;overflow:hidden;margin:9px 0 0}.flash-progress>span{height:100%;background:var(--mint);display:block;transition:.25s}
.achievements-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.achievement-card{padding:22px;border:1px solid var(--line);border-radius:17px;background:var(--panel);display:flex;flex-direction:column;min-height:185px}.achievement-icon{width:49px;height:49px;border-radius:15px;display:grid;place-items:center;color:var(--mint);background:#25453e;margin-bottom:15px}.achievement-icon svg{width:23px}.achievement-card.locked .achievement-icon{color:var(--muted-2);background:#262e3a}.achievement-card.locked{opacity:.71}.achievement-card h3{margin:0;font:750 17px var(--heading)}.achievement-card p{margin:5px 0 13px;font-size:11px;line-height:1.7;color:var(--muted)}.achievement-tag{font:700 10px var(--mono);color:var(--mint);margin-top:auto}.achievement-card.locked .achievement-tag{color:var(--muted-2)}
.challenge-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.challenge-card{background:var(--panel);border:1px solid var(--line);border-radius:15px;padding:18px;text-align:left;color:var(--text);display:flex;flex-direction:column;gap:10px}.challenge-card:hover{border-color:var(--mint);background:var(--panel-2)}.challenge-card-header{display:flex;align-items:center;justify-content:space-between}.challenge-card h3{font:750 16px var(--heading);margin:0}.challenge-card p{font-size:11px;color:var(--muted);line-height:1.7;margin:0}.challenge-card-bottom{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto}.challenge-filter-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:17px}.filter-chip{padding:7px 12px;border-radius:9px;background:var(--panel);border:1px solid var(--line);color:var(--muted);font-size:11px;font-weight:700}.filter-chip.active{background:#21413a;border-color:#376557;color:var(--mint)}
.modal-backdrop{position:fixed;inset:0;background:#03070dcc;backdrop-filter:blur(6px);z-index:90;display:flex;justify-content:center;align-items:flex-start;padding:15vh 18px 20px}.modal-backdrop[hidden]{display:none}.search-modal-content{max-width:650px;width:100%;background:#161e2e;border:1px solid #425065;border-radius:16px;overflow:hidden;box-shadow:0 40px 120px #0009}.search-modal-input{display:flex;align-items:center;gap:12px;padding:16px 19px;border-bottom:1px solid var(--line)}.search-modal-input svg{color:var(--muted);width:20px}.search-modal-input input{flex:1;min-width:0;background:transparent;border:0;outline:0;color:var(--text);font-size:13px}.search-modal-input input::placeholder{color:var(--muted-2)}.escape-key{border:1px solid var(--line-light);border-radius:5px;background:var(--panel);color:var(--muted);font:10px var(--mono);padding:5px 7px}.search-results{max-height:340px;overflow:auto;padding:8px}.search-result{width:100%;background:transparent;border:0;border-radius:10px;color:var(--text);display:flex;text-align:left;gap:11px;align-items:center;padding:11px}.search-result:hover,.search-result.highlighted{background:#27344b}.search-result-icon{color:var(--mint);background:#23463f;border-radius:8px;height:33px;width:33px;display:grid;place-items:center}.search-result-icon svg{width:17px}.search-result strong{display:block;font-size:12px}.search-result small{font-size:10px;color:var(--muted)}.search-result>.arrow-right{margin-left:auto;color:var(--muted)}.search-result>.arrow-right svg{width:16px}.search-empty{text-align:center;color:var(--muted);padding:28px;font-size:12px}.modal-foot{border-top:1px solid var(--line);padding:10px 16px;color:var(--muted-2);font:10px var(--mono);display:flex;gap:9px}.toast-area{position:fixed;right:24px;bottom:24px;z-index:100;display:grid;gap:9px}.toast{border:1px solid #3a695b;border-radius:11px;background:#21453d;box-shadow:var(--shadow);padding:12px 15px;color:#d3ffed;font-size:12px;max-width:340px;animation:toast-in .25s ease-out}@keyframes toast-in{from{transform:translateY(12px);opacity:0}to{transform:translateY(0);opacity:1}}
.light-theme{--bg:#f4f7fc;--side:#fff;--panel:#fff;--panel-2:#f3f6fc;--panel-3:#edf1f8;--soft:#e3eaf3;--line:#dee5ee;--line-light:#cad7e3;--text:#132337;--muted:#53667d;--muted-2:#788aa0;--shadow:0 24px 70px rgba(23,38,62,.13);--mint:#168b78;--mint-dark:#d6f6ea;--purple:#675bc7;--blue:#397ec5;--orange:#ac6b2c;--red:#c43b53}.light-theme .content-area{background:radial-gradient(circle at 80% 0%,#cce8e659,transparent 31%),var(--bg)}.light-theme .topbar{background:#fffffff0}.light-theme .hero{background:linear-gradient(110deg,#183d3c,#172b42);color:#f4fffe}.light-theme .hero .btn-primary{background:#82efd4;color:#0f3e36}.light-theme .hero h1 em{color:#82efd4}.light-theme .hero .hero-tag{color:#e0fff6}.light-theme .stat-icon,.light-theme .module-card-icon,.light-theme .module-button.active,.light-theme .side-link.active{color:#168b78}.light-theme .module-card-icon{background:#e1f5ee}.light-theme .sidebar .footer-help{background:#e9f5ef}.light-theme .sidebar .avatar{color:#075c52}.light-theme .search-trigger{background:#f5f7fb}.light-theme .code-head,.light-theme .editor-toolbar,.light-theme .result-head{color:#b5c6df}.light-theme .surface-card .editor-shell,.light-theme .practice-panel .editor-shell,.light-theme .example-code-wrap,.light-theme .result-area{color:#ecf2fa}.light-theme .result-placeholder{color:#96a4bf}.light-theme .flashcard-face{color:#fff}.light-theme .flashcard-face.back{color:#fff}.light-theme .path-header{color:#e7f8ef}.light-theme .path-header strong{color:#f8fffe}.light-theme .path-ring>span{color:#e7fffa}.light-theme .quiz-feedback{color:#235f50;background:#e1f6ed}.light-theme .quiz-feedback.bad{color:#992944;background:#ffe8ed}.light-theme .result-output{color:#dbf7ea}.light-theme .result-output.error{color:#ffc1c8}.light-theme .test-result.pass{background:#e4f9ee}.light-theme .test-result.fail{background:#ffedf1}.light-theme .practice-target{color:#52657b}.light-theme .code-edit-area pre{color:#e5eaf2}.light-theme .content-card p{color:#53677c}.light-theme .keypoint{color:#45596d}.light-theme .lesson-tip{color:#236b56;background:#e4f4ed}.light-theme .hero-chip{color:#dcfff4}.light-theme .stat-value{color:var(--text)}
@media(min-width:1650px){.sidebar{width:286px;min-width:286px}#main{padding-left:55px;padding-right:55px}}@media(max-width:1300px){.topbar{padding:0 29px}#main{padding:29px 30px 50px}.main-footer{padding-left:30px;padding-right:30px}.modules-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero h1{font-size:37px}.hero{padding:31px}.search-trigger{width:206px}}@media(max-width:1020px){.sidebar{width:230px;min-width:230px}.topbar{padding:0 22px}#main{padding:26px 22px}.hero{grid-template-columns:1fr}.hero-art{display:none}.hero h1{font-size:39px}.top-actions{gap:9px}.compiler-indicator span:last-child{display:none}.compiler-indicator{margin:0 4px}.search-trigger{width:190px}.search-trigger kbd{display:none}.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.dashboard-bottom,.lesson-content-grid,.playground-grid,.flashcard-layout{grid-template-columns:1fr}.lesson-side-card{position:static}.achievements-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-side-card .step-list{grid-template-columns:repeat(3,minmax(0,1fr))}.lesson-tip{margin-top:13px}}@media(max-width:760px){.mobile-only{display:inline-grid!important}.sidebar{position:fixed;left:0;top:0;bottom:0;transform:translateX(-110%);transition:transform .25s ease;box-shadow:var(--shadow);width:280px;z-index:40}.sidebar.open{transform:translateX(0)}.sidebar-scrim{position:fixed;inset:0;z-index:39;background:#000b;display:none}.sidebar-scrim.open{display:block}.brand-zone{display:flex;justify-content:space-between;align-items:center}.topbar{height:65px;min-height:65px;padding:0 17px}.top-left{gap:11px}.top-actions{gap:7px}.search-trigger{height:33px;width:35px;justify-content:center;padding:0}.search-trigger span:nth-child(2),.search-trigger kbd{display:none}.top-divider{display:none}.compiler-indicator{display:flex}.compiler-indicator span:last-child{display:none}.breadcrumb{gap:6px;font-size:11px}.theme-button{width:32px;height:32px}#main{padding:22px 16px 45px}.hero{padding:25px;min-height:308px}.hero h1{font-size:34px}.hero p{font-size:12px}.hero-actions .btn{flex:1}.modules-grid,.stats-grid,.dashboard-bottom,.achievements-grid,.challenge-list{grid-template-columns:1fr 1fr}.module-card{min-height:180px}.main-footer{padding:17px;font-size:10px}.main-footer span:last-child{display:none}.lesson-title-row{flex-direction:column}.lesson-side-card .step-list{grid-template-columns:1fr}.quiz-answers{grid-template-columns:1fr}.practice-header{padding:19px 16px}.practice-content{padding:0 16px 18px}.editor-body{min-height:260px}.lesson-next{flex-direction:column;align-items:stretch}.lesson-next .btn{width:100%}.section-heading h2{font-size:21px}.page-intro h1{font-size:31px}.flashcard-layout{grid-template-columns:1fr}.challenge-layout{flex-direction:column;align-items:stretch}.challenge-glyph{display:none}}@media(max-width:480px){.stats-grid,.modules-grid,.dashboard-bottom,.achievements-grid,.challenge-list{grid-template-columns:1fr}.stat-card{padding:15px}.hero h1{font-size:31px}.hero .hero-actions{flex-direction:column;align-items:stretch}.hero .hero-actions .btn{width:100%}.module-card{min-height:160px}.practice-controls{align-items:stretch;flex-direction:column}.practice-control-right{width:100%}.practice-control-right .btn{flex:1}.surface-heading{align-items:start;flex-direction:column}.feature-panel{padding:18px}.lesson-meta{gap:7px}.flashcard-face{padding:21px}.flash-actions{flex-direction:column}.flash-actions .btn{width:100%}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}

/* C//LAB 2.0 — lekkie podpowiedzi edytora. */
.code-edit-area {position:relative}
.editor-autocomplete {
  position:absolute;z-index:20;width:286px;max-width:calc(100% - 12px);
  background:var(--panel-2);border:1px solid var(--line-light);
  border-radius:12px;box-shadow:0 16px 40px #0007;
  overflow:hidden;user-select:none;
}
.editor-autocomplete[hidden] {display:none!important}
.suggest-title {display:flex;justify-content:space-between;padding:8px 11px;border-bottom:1px solid var(--line);color:var(--mint);font:700 10px var(--mono);letter-spacing:.4px}
.suggest-title span {color:var(--muted-2);font-weight:500}
.suggest-item {width:100%;display:flex;align-items:center;justify-content:space-between;padding:9px 11px;border:0;color:var(--text);background:transparent;text-align:left;gap:12px}
.suggest-item.active,.suggest-item:hover{background:var(--soft)}
.suggest-item strong{display:block;font:700 12px var(--mono);color:var(--mint)}
.suggest-item small{display:block;color:var(--muted);font-size:10px;margin-top:1px}
.suggest-insert{color:var(--muted-2);font-size:13px}
.editor-status{gap:10px;flex-wrap:wrap}
.assist-toggle{padding:3px 8px;margin-left:6px;border:1px solid var(--mint-dark);border-radius:7px;background:var(--mint-dark);color:var(--mint);font-size:10px;font-weight:750}
.assist-toggle:hover{border-color:var(--mint)}
.editor-help{font-size:11px;color:var(--orange);background:var(--panel-2);padding:0 14px;line-height:1.7}
.editor-help:not(:empty){padding:8px 14px;border-top:1px solid var(--line)}
.compiler-indicator.offline{max-width:210px}
@media(max-width:700px){
  .editor-autocomplete{width:min(260px,95%);left:4px!important;top:24px!important}
  .editor-status{font-size:10px}
  .practice-control-right{flex-wrap:wrap;justify-content:flex-end}
}

/* C//LAB 3.0 — panel konta i synchronizacji w Node.js. */
.account-trigger{display:inline-flex;align-items:center;justify-content:center;gap:7px;max-width:165px;min-width:86px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;border:1px solid #3c736b;border-radius:10px;background:#1b3536;color:var(--mint);padding:8px 11px;font:750 12px var(--font);height:36px}
.account-trigger:hover{border-color:var(--mint);background:#214741}
.account-trigger span{overflow:hidden;text-overflow:ellipsis}
.account-backdrop{position:fixed;inset:0;z-index:90;background:#020811c9;display:flex;align-items:center;justify-content:center;padding:18px;backdrop-filter:blur(6px)}
.account-backdrop[hidden],#account-guest[hidden],#account-logged[hidden],#account-error[hidden]{display:none!important}
.account-panel{background:var(--panel);border:1px solid var(--line-light);box-shadow:var(--shadow);border-radius:22px;width:min(440px,100%);max-height:90vh;overflow:auto;padding:30px;position:relative}
.account-close{position:absolute;right:18px;top:16px;color:var(--muted);border:1px solid var(--line);background:var(--panel-2);border-radius:8px;padding:6px 11px}
.account-symbol{width:62px;height:62px;background:#234a42;border:1px solid #408775;border-radius:17px;display:flex;align-items:center;justify-content:center;font:bold 33px var(--mono);color:var(--mint)}
.account-symbol span{font-size:14px;align-self:end;margin-bottom:17px;margin-left:2px}
.account-panel h2{font:750 25px var(--heading);margin:20px 0 5px}
.account-subtitle{color:var(--muted);font-size:12px;line-height:1.7;margin:0 0 24px}
.account-switch{display:grid;grid-template-columns:1fr 1fr;gap:5px;padding:5px;border:1px solid var(--line);border-radius:12px;background:var(--panel-2);margin-bottom:18px}
.account-switch button{border:0;border-radius:8px;padding:10px;color:var(--muted);background:transparent;font-weight:750;font-size:12px}
.account-switch button.active{background:#31584f;color:#d1fff0;box-shadow:0 4px 10px #0002}
#account-form{display:flex;flex-direction:column;gap:8px}
#account-form label{font-weight:700;color:var(--text);font-size:12px;margin-top:5px}
#account-form input{width:100%;padding:12px 13px;border-radius:10px;border:1px solid var(--line-light);outline:none;background:var(--panel-2);color:var(--text);font-size:13px}
#account-form input:focus{border-color:var(--mint)}
#account-form button[type=submit]{margin-top:12px;width:100%;height:43px}
.account-error{color:#ff97a6;font-size:12px;padding:9px;border:1px solid #9d3e55;background:#692f3933;border-radius:8px;margin:8px 0 0}
.account-footnote{color:var(--muted-2);font-size:11px;margin:17px 0 0;line-height:1.7}
.account-success{background:#20453c;border:1px solid #376e5e;color:#c4ffe8;padding:13px;border-radius:10px;margin-bottom:15px}
#account-logged p{color:var(--muted);font-size:12px;line-height:1.65}
#account-logged .account-sync-status{color:var(--mint);font-weight:700}
#account-logout{margin-top:12px}
@media(max-width:760px){.account-trigger{width:37px;min-width:37px;padding:7px}.account-trigger span{display:none}.account-panel{padding:23px}}

/* MSOX 5.0 — identyfikacja projektu, konta i kolokwia */
.msox-footer{display:flex;gap:20px;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;padding-top:25px;padding-bottom:25px}.msox-footer-title{font-size:12px;line-height:1.7;max-width:340px}.msox-footer-title strong{color:var(--mint)}.msox-footer-title span{display:block;opacity:.75;font-size:11px}.msox-footer-links{display:flex;flex-wrap:wrap;gap:10px 17px;max-width:530px}.msox-footer-links a{font-size:12px;color:var(--muted);text-decoration:none}.msox-footer-links a:hover{color:var(--mint)}.terms-row{display:flex;gap:10px;align-items:flex-start;margin:15px 0!important;font-size:12px;color:var(--muted);line-height:1.65}.terms-row input{margin-top:3px;flex-shrink:0;accent-color:#73e4cf}.terms-row a,.account-footnote a{color:var(--mint)}.account-management{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:17px}.account-management .btn{font-size:12px}.exam-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px;margin:20px 0}.exam-option{width:100%;text-align:left;cursor:pointer;border:1px solid var(--border);background:var(--panel);color:var(--text);border-radius:12px;padding:14px 16px;margin:7px 0;font-size:14px}.exam-option.selected{border-color:var(--mint);background:color-mix(in srgb,var(--mint) 10%,var(--panel))}.exam-card{margin:14px 0;border:1px solid var(--border);border-radius:14px;background:var(--panel);padding:23px}.exam-card h3{font-size:17px;margin:0 0 9px}.exam-card small{color:var(--muted)}.exam-top-bar{position:sticky;top:0;z-index:5;display:flex;gap:16px;justify-content:space-between;align-items:center;border:1px solid var(--border);padding:15px 20px;border-radius:14px;background:var(--panel);box-shadow:0 7px 30px #0002}.exam-clock{font-variant-numeric:tabular-nums;font-weight:800;color:var(--mint);font-size:21px}.exam-clock.warning{color:#f4a86d}.exam-history{border-collapse:collapse;width:100%;font-size:13px}.exam-history td,.exam-history th{text-align:left;border-bottom:1px solid var(--border);padding:12px 8px}.exam-history th{color:var(--muted);font-weight:600}.exam-actions{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0}.exam-score{font-size:clamp(36px,7vw,64px);font-weight:850;letter-spacing:-2px;color:var(--mint)}.exam-notice{border-left:3px solid #f3bd76;background:var(--panel);padding:15px 18px;border-radius:8px;color:var(--muted);font-size:13px;line-height:1.8}.exam-code{min-height:170px;width:100%;resize:vertical;border:1px solid var(--border);border-radius:11px;background:#090e1c;color:#d9f2e9;padding:15px;font:13px/1.6 ui-monospace,Consolas,monospace;tab-size:4}.exam-result{white-space:pre-wrap;color:var(--muted);font-family:ui-monospace,Consolas,monospace;font-size:12px;margin:11px 0 0}.exam-levels{display:flex;gap:9px;flex-wrap:wrap;margin:18px 0}.exam-levels button{padding:11px 16px;border:1px solid var(--border);border-radius:10px;background:var(--panel);color:var(--text);cursor:pointer}.exam-levels button:hover{border-color:var(--mint)}@media(max-width:720px){.account-management{grid-template-columns:1fr}.exam-summary{grid-template-columns:1fr}.exam-top-bar{position:static}}

.terms-row[hidden]{display:none!important}