:root{--bg: #07090d;--bg2: #0d1117;--bg3: #161b22;--bg4: #1c232d;--border: rgba(0, 255, 136, .12);--border2: rgba(0, 255, 136, .28);--green: #00FF88;--green-dim: #00c96a;--blue: #58a6ff;--amber: #f0a500;--red: #ff4757;--purple: #9d6cff;--text: #e6edf3;--text2: #8b949e;--text3: #565f6b;--mono: "JetBrains Mono", "Space Mono", monospace;--sans: "Syne", sans-serif;--radius: 8px;--radius-lg: 14px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:var(--sans);min-height:100vh;overflow-x:hidden}::-webkit-scrollbar{width:7px;height:7px}::-webkit-scrollbar-track{background:var(--bg2)}::-webkit-scrollbar-thumb{background:var(--border2);border-radius:4px}a{color:inherit}.hidden{display:none!important}.btn-primary{background:var(--green);color:#04140c;border:none;padding:12px 26px;font-family:var(--mono);font-size:13px;font-weight:700;border-radius:var(--radius);cursor:pointer;transition:transform .15s,box-shadow .15s}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 28px #00ff8852}.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border2);padding:12px 26px;font-family:var(--mono);font-size:13px;border-radius:var(--radius);cursor:pointer;transition:border-color .2s,color .2s}.btn-ghost:hover{border-color:var(--green);color:var(--green)}.btn-danger{background:var(--red);color:#fff;border:none;padding:11px 22px;font-family:var(--mono);font-size:13px;font-weight:700;border-radius:var(--radius);cursor:pointer}.btn-danger:hover{opacity:.9}.btn-full{width:100%;background:var(--green);color:#04140c;border:none;padding:13px;font-family:var(--mono);font-size:14px;font-weight:700;border-radius:var(--radius);cursor:pointer;transition:transform .15s,box-shadow .15s;margin-top:6px}.btn-full:hover{transform:translateY(-2px);box-shadow:0 8px 24px #00ff884d}.auth-screen{position:fixed;top:0;right:0;bottom:0;left:0;z-index:500;display:flex;align-items:center;justify-content:center;background:var(--bg);overflow:hidden;padding:20px}.auth-canvas{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;opacity:.16}.auth-box{position:relative;z-index:1;background:var(--bg2);border:1px solid var(--border2);border-radius:var(--radius-lg);padding:40px;width:100%;max-width:420px;animation:scaleIn .3s ease}.auth-logo{display:flex;align-items:center;gap:10px;justify-content:center;font-family:var(--sans);font-weight:800;font-size:24px;margin-bottom:8px;letter-spacing:-.5px}.auth-logo em{color:var(--green);font-style:normal}.auth-logo img{height:36px}.auth-sub{text-align:center;color:var(--text2);font-family:var(--mono);font-size:12px;margin-bottom:26px}.auth-tabs{display:flex;gap:4px;background:var(--bg3);border-radius:var(--radius);padding:4px;margin-bottom:22px}.atab{flex:1;padding:10px;border:none;background:transparent;color:var(--text2);font-family:var(--mono);font-size:12px;border-radius:6px;cursor:pointer;transition:all .2s}.atab.active{background:var(--green);color:#04140c;font-weight:700}.field{margin-bottom:15px}.field label{display:block;font-family:var(--mono);font-size:11px;color:var(--text3);margin-bottom:6px;letter-spacing:.04em;text-transform:uppercase}.field input,.field textarea,.admin-input,select.admin-input{width:100%;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:11px 14px;font-family:var(--mono);font-size:13px;color:var(--text);outline:none;transition:border-color .2s}.field input:focus,.admin-input:focus,.field textarea:focus{border-color:var(--border2)}.field input::placeholder,.admin-input::placeholder{color:var(--text3)}.auth-err{color:var(--red);font-family:var(--mono);font-size:12px;min-height:16px;margin:6px 0;line-height:1.4}.pw-rules{font-family:var(--mono);font-size:10.5px;color:var(--text3);margin:-8px 0 12px;line-height:1.6}.pw-rules .ok{color:var(--green)}.auth-divider{display:flex;align-items:center;gap:12px;margin:20px 0;color:var(--text3);font-family:var(--mono);font-size:11px}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:var(--border)}.btn-google{width:100%;display:flex;align-items:center;justify-content:center;gap:10px;background:var(--bg3);color:var(--text);border:1px solid var(--border2);padding:12px;font-family:var(--mono);font-size:13px;border-radius:var(--radius);cursor:pointer;transition:border-color .2s}.btn-google:hover{border-color:var(--text2)}.btn-google svg{width:18px;height:18px}#navbar{position:fixed;top:0;left:0;right:0;z-index:100;background:#07090deb;border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.logo{display:flex;align-items:center;gap:12px;font-family:var(--sans);font-weight:800;font-size:24px;cursor:pointer;-webkit-user-select:none;user-select:none;letter-spacing:-.5px}.logo em{color:var(--green);font-style:normal}.logo img{height:52px;width:52px;object-fit:contain}.nav-links{display:flex;gap:6px;flex:1;justify-content:center}.nav-link{display:flex;align-items:center;gap:7px;padding:8px 16px;border-radius:99px;font-family:var(--mono);font-size:12.5px;color:var(--text2);cursor:pointer;transition:all .2s;text-decoration:none;border:1px solid transparent;position:relative}.nav-link svg{opacity:.7;transition:all .2s}.nav-link:hover{color:var(--text);background:var(--bg3)}.nav-link:hover svg{opacity:1}.nav-link.active{color:var(--green);background:linear-gradient(135deg,#00ff8824,#00ff880a);border-color:#00ff884d;box-shadow:0 0 12px #00ff881a}.nav-link.active svg{opacity:1;color:var(--green)}.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}.score-pill{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--green);background:var(--border);border:1px solid var(--border2);padding:4px 13px;border-radius:99px}.nav-user-menu{position:relative}.avatar-btn{width:36px;height:36px;border-radius:50%;background:var(--bg3);border:1px solid var(--border2);display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:11px;color:var(--green);cursor:pointer;font-weight:700;overflow:hidden}.avatar-btn img{width:100%;height:100%;object-fit:cover}.user-dropdown{position:absolute;top:46px;right:0;background:var(--bg2);border:1px solid var(--border2);border-radius:var(--radius);padding:8px;min-width:230px;display:flex;flex-direction:column;gap:2px;z-index:110}.ud-name{font-family:var(--mono);font-size:12px;color:var(--green);padding:9px 12px;border-bottom:1px solid var(--border);margin-bottom:4px;word-break:break-all}.user-dropdown a{display:flex;align-items:center;gap:10px;padding:10px 12px;font-size:13px;color:var(--text2);border-radius:6px;cursor:pointer;transition:background .15s}.user-dropdown a svg{flex-shrink:0}.user-dropdown a.danger{color:var(--red)}.user-dropdown a.danger:hover{background:#ff47571a}.user-dropdown a:hover{background:var(--bg3);color:var(--text)}.user-dropdown hr{border:none;border-top:1px solid var(--border);margin:4px 0}.page{display:block;padding-top:62px}.page-inner{max-width:1200px;margin:0 auto;padding:46px 24px}.page-h2{font-size:32px;font-weight:800;margin-top:8px;letter-spacing:-1px}.page-title-row{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px;flex-wrap:wrap}.section-tag{font-family:var(--mono);font-size:12px;color:var(--green);letter-spacing:.06em}.section-header{text-align:center;margin-bottom:38px}.section-header h2{font-size:34px;font-weight:800;margin-top:8px;letter-spacing:-1px}.loading{grid-column:1/-1;text-align:center;padding:60px;color:var(--text3);font-family:var(--mono)}.hero{position:relative;min-height:92vh;display:flex;align-items:center;overflow:hidden;margin-top:-62px;padding-top:62px;box-sizing:border-box}#matrix-canvas{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;opacity:.22}.hero-content{position:relative;z-index:1;max-width:1200px;margin:0 auto;padding:0 24px;width:100%}.hero-tag{font-family:var(--mono);font-size:13px;color:var(--green);margin-bottom:22px;animation:fadeIn .6s ease}.hero h1{font-size:clamp(54px,8.5vw,110px);font-weight:800;line-height:.92;letter-spacing:-3px;background:linear-gradient(135deg,#fff 42%,var(--green) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:22px;animation:fadeUp .7s ease}.hero p{max-width:500px;font-size:16px;line-height:1.7;color:var(--text2);margin-bottom:34px;animation:fadeUp .8s ease}.hero-cta{display:flex;gap:14px;margin-bottom:52px;animation:fadeUp .9s ease;flex-wrap:wrap}.hero-stats{display:flex;align-items:center;animation:fadeUp 1s ease;flex-wrap:wrap;gap:8px 0}.hstat{display:flex;flex-direction:column}.hstat-n{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--green)}.hstat-l{font-size:13px;color:var(--text2);margin-top:2px}.hstat-sep{width:1px;height:38px;background:var(--border2);margin:0 30px}.cat-section{max-width:1200px;margin:0 auto;padding:74px 24px}.cat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}.cat-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 24px;cursor:pointer;transition:transform .2s,border-color .2s,box-shadow .2s}.cat-card:hover{transform:translateY(-4px);border-color:var(--border2)}.cat-icon{margin-bottom:16px}.cat-card h3{font-size:18px;font-weight:700;margin-bottom:8px}.cat-card p{font-size:13px;color:var(--text2);line-height:1.6;margin-bottom:16px}.cat-count{font-family:var(--mono);font-size:12px;color:var(--text3);border-top:1px solid var(--border);padding-top:12px}.filter-row{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}.filter-tabs,.diff-filters{display:flex;gap:6px;flex-wrap:wrap}.ftab,.dfab{font-family:var(--mono);font-size:12px;padding:6px 14px;border-radius:99px;border:1px solid var(--border);background:transparent;color:var(--text2);cursor:pointer;transition:all .15s}.ftab:hover,.dfab:hover{border-color:var(--border2);color:var(--text)}.ftab.active{background:var(--green);color:#04140c;border-color:var(--green);font-weight:700}.dfab.active{background:var(--bg3);color:var(--text);border-color:var(--border2)}.search-bar{display:flex;align-items:center;gap:10px;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:8px 14px;color:var(--text2);transition:border-color .2s}.search-bar:focus-within{border-color:var(--border2)}.search-bar input{background:none;border:none;outline:none;font-family:var(--mono);font-size:13px;color:var(--text);width:220px}.search-bar input::placeholder{color:var(--text3)}.challenges-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}.chall-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;cursor:pointer;transition:transform .2s,border-color .2s;position:relative}.chall-card:hover{transform:translateY(-3px);border-color:var(--border2)}.chall-card.solved{border-left:3px solid var(--green)}.chall-card.solved:after{content:"✓";position:absolute;top:16px;right:16px;width:22px;height:22px;background:#00ff881a;border:1px solid rgba(0,255,136,.3);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--green)}.chall-top{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:10px;gap:8px}.chall-name{font-size:16px;font-weight:700;line-height:1.3}.chall-pts{font-family:var(--mono);font-size:14px;font-weight:700;color:var(--green);white-space:nowrap}.chall-badges{display:flex;gap:6px;margin-bottom:10px;flex-wrap:wrap}.badge{font-family:var(--mono);font-size:11px;padding:3px 10px;border-radius:99px;font-weight:700;border:1px solid}.badge-web{background:#9d6cff1f;color:#c4a3ff;border-color:#9d6cff4d}.badge-crypto{background:#00ff881a;color:var(--green-dim);border-color:#00ff8840}.badge-forensics{background:#58a6ff1a;color:var(--blue);border-color:#58a6ff40}.badge-reverse{background:#f0a5001a;color:var(--amber);border-color:#f0a50040}.badge-easy{background:#00c8501a;color:#28d268;border-color:#00c85040}.badge-medium{background:#f0a5001a;color:var(--amber);border-color:#f0a50040}.badge-hard{background:#ff47571a;color:var(--red);border-color:#ff475740}.badge-insane{background:#9d6cff1f;color:var(--purple);border-color:#9d6cff4d}.chall-desc{font-size:13px;color:var(--text2);line-height:1.6;margin-bottom:14px}.chall-footer{display:flex;justify-content:space-between;align-items:center;padding-top:12px;border-top:1px solid var(--border)}.chall-solves{font-family:var(--mono);font-size:11px;color:var(--text3)}.chall-author{font-size:11px;color:var(--text3)}.modal-overlay{display:flex;position:fixed;top:0;right:0;bottom:0;left:0;z-index:200;background:#000000c7;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);align-items:center;justify-content:center;padding:24px}.modal-box{background:var(--bg2);border:1px solid var(--border2);border-radius:var(--radius-lg);max-width:600px;width:100%;max-height:86vh;overflow-y:auto;padding:32px;position:relative;animation:scaleIn .2s ease}.modal-large{max-width:720px}.modal-close{position:absolute;top:16px;right:16px;background:var(--bg3);border:1px solid var(--border);color:var(--text2);width:30px;height:30px;border-radius:50%;cursor:pointer;font-size:14px;transition:color .2s}.modal-close:hover{color:var(--red);border-color:var(--red)}.modal-title{font-size:25px;font-weight:800;margin-bottom:8px;letter-spacing:-.5px}.modal-meta{display:flex;gap:12px;align-items:center;margin-bottom:20px;flex-wrap:wrap}.modal-pts{font-family:var(--mono);font-size:22px;font-weight:700;color:var(--green)}.modal-desc{font-size:15px;color:var(--text2);line-height:1.8;margin-bottom:24px;border-left:2px solid var(--border2);padding-left:16px}.modal-files h4,.flag-section h4,.hint-section h4{font-family:var(--mono);font-size:12px;color:var(--text3);margin-bottom:10px;letter-spacing:.06em}.modal-files{margin-bottom:22px}.file-item{display:inline-flex;align-items:center;gap:8px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:8px 14px;font-family:var(--mono);font-size:12px;color:var(--blue);cursor:pointer;transition:border-color .2s}.flag-input-row{display:flex;gap:10px}.flag-input{flex:1;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:11px 14px;font-family:var(--mono);font-size:13px;color:var(--green);outline:none;transition:border-color .2s}.flag-input:focus{border-color:var(--border2)}.submit-flag{background:var(--green);color:#04140c;border:none;padding:11px 20px;font-family:var(--mono);font-size:13px;font-weight:700;border-radius:var(--radius);cursor:pointer}.flag-result{margin-top:10px;font-family:var(--mono);font-size:13px;padding:9px 14px;border-radius:var(--radius);display:flex;align-items:center;gap:8px}.flag-result svg{flex-shrink:0}.flag-correct{background:#00ff881a;color:var(--green);border:1px solid rgba(0,255,136,.25)}.flag-firstblood{background:#ff5c6c1f;color:#ff5c6c;border:1px solid rgba(255,92,108,.4);font-weight:700;box-shadow:0 0 16px #ff5c6c33;animation:fbPulse 1.2s ease}@keyframes fbPulse{0%{transform:scale(.96);opacity:.5}50%{transform:scale(1.02)}to{transform:scale(1);opacity:1}}.flag-wrong{background:#ff47571a;color:var(--red);border:1px solid rgba(255,71,87,.25)}.hint-section{margin-top:20px}.hint-btn{background:var(--bg3);border:1px solid var(--border);color:var(--amber);font-family:var(--mono);font-size:12px;padding:8px 14px;border-radius:var(--radius);cursor:pointer;transition:border-color .2s}.hint-btn:hover{border-color:var(--amber)}.hint-text{margin-top:10px;font-size:13px;color:var(--text2);padding:10px 14px;background:#f0a50012;border:1px solid rgba(240,165,0,.2);border-radius:var(--radius)}.lb-podium{display:flex;align-items:flex-end;justify-content:center;gap:16px;margin:40px 0;flex-wrap:wrap}.podium-block{display:flex;flex-direction:column;align-items:center;gap:10px}.podium-avatar{width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:16px;font-weight:700;overflow:hidden}.podium-avatar img{width:100%;height:100%;object-fit:cover}.podium-1 .podium-avatar{border:2px solid #FFD700;background:#ffd7001a;color:gold;width:68px;height:68px;font-size:20px}.podium-2 .podium-avatar{border:2px solid #C0C0C0;background:#c0c0c01a;color:silver}.podium-3 .podium-avatar{border:2px solid #CD7F32;background:#cd7f321a;color:#cd7f32}.podium-name{font-weight:700;font-size:14px}.podium-score{font-family:var(--mono);font-size:13px;color:var(--text2)}.podium-bar{width:80px;border-radius:var(--radius) var(--radius) 0 0;background:var(--bg3);border:1px solid var(--border);border-bottom:none}.podium-1 .podium-bar{height:80px;border-color:#ffd7004d;background:#ffd7000d}.podium-2 .podium-bar{height:60px}.podium-3 .podium-bar{height:44px}.lb-table{width:100%;border-collapse:collapse;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden}.lb-table th{font-family:var(--mono);font-size:11px;color:var(--text3);text-align:left;padding:12px 16px;border-bottom:1px solid var(--border);letter-spacing:.06em;background:var(--bg3)}.lb-table td{padding:13px 16px;border-bottom:1px solid var(--border);font-size:14px}.lb-table tr:last-child td{border-bottom:none}.lb-table tr:hover td{background:var(--bg3)}.lb-table th:nth-child(1),.lb-table td:nth-child(1){width:60px;text-align:center}.lb-table th:nth-child(3),.lb-table td:nth-child(3){width:70px;text-align:center}.lb-table th:nth-child(4),.lb-table td:nth-child(4){width:110px;text-align:center}.lb-table th:nth-child(5),.lb-table td:nth-child(5){width:110px;text-align:right}.lb-rank-n{font-family:var(--mono);font-size:14px;color:var(--text3);font-weight:700}.lb-player{display:flex;align-items:center;gap:12px}.lb-av{width:32px;height:32px;border-radius:50%;background:var(--bg3);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:11px;color:var(--green);font-weight:700;overflow:hidden}.lb-av img{width:100%;height:100%;object-fit:cover}.lb-score-n{font-family:var(--mono);font-weight:700;color:var(--green)}@media (max-width: 640px){.lb-table thead{display:none}.lb-table,.lb-table tbody,.lb-table tr,.lb-table td{display:block;width:100%!important}.lb-table tr{border:1px solid var(--border);border-radius:var(--radius-lg);margin-bottom:10px;padding:10px 0;position:relative;background:var(--bg2)}.lb-table td{border:none;padding:5px 16px;text-align:left!important}.lb-table td:nth-child(1){position:absolute;top:12px;right:14px;width:auto;padding:0}.lb-table td:nth-child(3):before{content:"Challenges : ";color:var(--text3);font-family:var(--mono);font-size:12px}.lb-table td:nth-child(4):before{content:"Score : ";color:var(--text3);font-family:var(--mono);font-size:12px}}.learn-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:16px;margin-top:30px}.learn-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;transition:transform .2s,border-color .2s;cursor:pointer}.learn-card:hover{transform:translateY(-3px);border-color:var(--border2)}.learn-icon{font-size:28px;margin-bottom:12px}.learn-card h3{font-size:16px;font-weight:700;margin-bottom:8px}.learn-card p{font-size:13px;color:var(--text2);line-height:1.6;margin-bottom:16px}.learn-tag{font-family:var(--mono);font-size:11px;color:var(--text3)}.profile-header{display:flex;align-items:flex-start;gap:24px;margin-bottom:38px;flex-wrap:wrap}.profile-avatar-wrap{position:relative}.profile-avatar{width:88px;height:88px;border-radius:50%;background:var(--bg3);border:2px solid var(--border2);display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:26px;font-weight:700;color:var(--green);overflow:hidden}.profile-avatar img{width:100%;height:100%;object-fit:cover}.avatar-edit{position:absolute;bottom:0;right:0;width:28px;height:28px;border-radius:50%;background:var(--green);color:#04140c;border:2px solid var(--bg);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:13px}.profile-info{flex:1;min-width:200px}.profile-info h2{font-size:26px;font-weight:800;margin-bottom:4px;display:flex;align-items:center;gap:10px}.profile-edit-btn{background:var(--bg3);border:1px solid var(--border);color:var(--text2);padding:5px 12px;font-family:var(--mono);font-size:11px;border-radius:var(--radius);cursor:pointer}.profile-edit-btn:hover{border-color:var(--border2);color:var(--text)}.profile-bio{color:var(--text2);font-size:14px;margin-bottom:12px}.profile-badges{display:flex;gap:8px;flex-wrap:wrap}.pbadge{font-size:12px;padding:4px 12px;background:var(--bg3);border:1px solid var(--border);border-radius:99px;color:var(--text2)}.profile-score-big{text-align:right}.profile-score-big span{font-family:var(--mono);font-size:46px;font-weight:700;color:var(--green);display:block;line-height:1}.profile-score-big small{font-size:13px;color:var(--text2)}.profile-stats-row{display:flex;gap:16px;margin-bottom:38px;flex-wrap:wrap}.pstat{flex:1;min-width:100px;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px 20px;display:flex;flex-direction:column;align-items:center;gap:4px}.pstat-n{font-family:var(--mono);font-size:24px;font-weight:700;color:var(--green)}.pstat-l{font-size:12px;color:var(--text2)}.profile-section-title{font-size:18px;font-weight:700;margin-bottom:16px}.solved-list{display:flex;flex-direction:column;gap:8px}.solved-item{display:flex;align-items:center;justify-content:space-between;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px;font-size:14px}.solved-item-left{display:flex;align-items:center;gap:12px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleIn{0%{transform:scale(.96);opacity:0}to{transform:scale(1);opacity:1}}@media (max-width: 768px){.nav-links,.hstat-sep{display:none}.hstat{width:50%;margin-bottom:12px}}.admin-layout{display:flex;min-height:100vh;--bg: #050608;--bg2: #0c0f14;--bg3: #11151c;--text: #cfd6e0;--text2: #7d8799;--text3: #5a6678;--border: #1c2230;--border2: #2a3242;--admin-bg: #050608;--admin-surface: #0c0f14;--admin-surface2: #11151c;--admin-border: #1c2230;--admin-amber: #f0a500;background:linear-gradient(rgba(240,165,0,.025) 1px,transparent 1px) 0 0 / 100% 32px,linear-gradient(90deg,rgba(240,165,0,.025) 1px,transparent 1px) 0 0 / 32px 100%,var(--admin-bg);color:#cfd6e0}.admin-sidebar{width:248px;min-width:248px;background:var(--admin-surface);border-right:1px solid var(--admin-border);padding:24px 14px;display:flex;flex-direction:column;position:fixed;top:0;bottom:0;box-shadow:2px 0 24px #0006}.admin-brand{font-family:var(--sans);font-weight:800;font-size:18px;color:var(--admin-amber);margin-bottom:4px;padding:4px 10px;display:flex;align-items:center;gap:9px;letter-spacing:-.3px}.admin-brand img{height:28px;width:28px;object-fit:contain;filter:drop-shadow(0 0 6px rgba(240,165,0,.5))}.admin-brand-sub{font-family:var(--mono);font-size:10px;color:#4a5364;padding:0 10px;margin-bottom:8px;letter-spacing:.12em;text-transform:uppercase}.admin-status-line{display:flex;align-items:center;gap:7px;padding:8px 10px;margin-bottom:18px;font-family:var(--mono);font-size:10px;color:#5a6678;letter-spacing:.08em}.admin-status-dot{width:7px;height:7px;border-radius:50%;background:var(--admin-amber);box-shadow:0 0 8px var(--admin-amber);animation:adminPulse 2s infinite}@keyframes adminPulse{0%,to{opacity:1}50%{opacity:.4}}.admin-nav{display:flex;flex-direction:column;gap:3px;flex:1}.anav{padding:11px 13px;font-family:var(--mono);font-size:12.5px;color:#7d8799;border-radius:7px;cursor:pointer;transition:all .15s;display:flex;align-items:center;gap:10px;border:1px solid transparent}.anav:hover{background:var(--admin-surface2);color:#cfd6e0}.anav.active{background:linear-gradient(90deg,#f0a50029,#f0a5000a);color:var(--admin-amber);border-color:#f0a50047;box-shadow:inset 2px 0 0 var(--admin-amber)}.admin-user-box{border-top:1px solid var(--admin-border);padding-top:14px;margin-top:14px}.admin-user-box .auser{font-family:var(--mono);font-size:12px;color:var(--admin-amber);padding:0 10px 10px}.admin-logout{width:100%;background:transparent;border:1px solid var(--admin-border);color:#ff5c6c;padding:9px;border-radius:7px;font-family:var(--mono);font-size:12px;cursor:pointer;transition:all .2s}.admin-logout:hover{border-color:#ff5c6c;background:#ff5c6c14}.admin-main{flex:1;margin-left:248px;padding:32px 38px;max-width:1280px}.admin-h2{font-size:23px;font-weight:800;margin-bottom:22px;letter-spacing:-.4px;padding-left:14px;border-left:3px solid var(--admin-amber);line-height:1.1}.admin-h2:before{content:"// ";color:var(--admin-amber);font-family:var(--mono);font-size:15px;font-weight:400}.admin-section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;flex-wrap:wrap;gap:14px}.admin-stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:13px;margin-bottom:26px}.admin-stat{background:var(--admin-surface);border:1px solid var(--admin-border);border-radius:10px;padding:20px;position:relative;overflow:hidden}.admin-stat:after{content:"";position:absolute;top:0;right:0;width:28px;height:28px;background:linear-gradient(135deg,transparent 50%,rgba(240,165,0,.18) 50%)}.admin-stat-n{font-family:var(--mono);font-size:29px;font-weight:700;color:var(--admin-amber)}.admin-stat-l{font-size:12px;color:#7d8799;margin-top:4px;font-family:var(--mono);letter-spacing:.04em}.admin-card{background:var(--admin-surface);border:1px solid var(--admin-border);border-radius:10px;padding:22px}.admin-card h3{font-size:15px;font-weight:700;margin-bottom:16px;color:#e6edf3}.admin-table-wrap{background:var(--admin-surface);border:1px solid var(--admin-border);border-radius:10px;overflow-x:auto}.admin-table th{font-family:var(--mono);font-size:10.5px;color:#5a6678;text-align:left;padding:13px 16px;border-bottom:1px solid var(--admin-border);letter-spacing:.08em;text-transform:uppercase;white-space:nowrap;background:var(--admin-bg)}.admin-table td{padding:12px 16px;border-bottom:1px solid var(--admin-border);font-size:13px;white-space:nowrap}.admin-table tr:hover td{background:var(--admin-surface2)}.act-btn{background:var(--admin-surface2);border:1px solid var(--admin-border);color:#9aa4b5;width:30px;height:30px;border-radius:7px;cursor:pointer;margin-right:4px;transition:all .15s;font-size:13px}.act-btn:hover{border-color:var(--admin-amber);color:var(--admin-amber)}.act-btn.del:hover{border-color:#ff5c6c;color:#ff5c6c}.admin-main .btn-primary,.admin-layout .btn-primary{background:var(--admin-amber);color:#1a1200;border:none;font-weight:700}.admin-main .btn-primary:hover{box-shadow:0 0 16px #f0a50066}.role-pill{font-family:var(--mono);font-size:11px;padding:3px 10px;border-radius:99px}.role-admin{background:#f0a50024;color:var(--admin-amber);border:1px solid rgba(240,165,0,.34)}.role-user{background:var(--admin-surface2);color:#7d8799;border:1px solid var(--admin-border)}.role-mod,.role-moderator{background:#5865f229;color:#8b95f7;border:1px solid rgba(88,101,242,.4);font-family:var(--mono);font-size:11px;padding:3px 10px;border-radius:99px}.role-select{background:var(--admin-surface2);color:#cfd6e0;border:1px solid var(--admin-border);border-radius:7px;padding:5px 8px;font-family:var(--mono);font-size:12px;cursor:pointer}.role-select:hover{border-color:var(--admin-amber)}.prov-pill{font-family:var(--mono);font-size:11px;padding:3px 10px;border-radius:99px;background:var(--admin-surface2);color:#9aa4b5;border:1px solid var(--admin-border)}.prov-google{color:#58a6ff}.admin-section{display:block}.admin-section.active{animation:fadeIn .3s ease}.admin-h2{font-size:26px;font-weight:800;margin-bottom:24px;letter-spacing:-.5px}.admin-section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;flex-wrap:wrap;gap:12px}.admin-section-header .admin-h2{margin-bottom:0}.admin-stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-bottom:28px}.admin-stat{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px}.admin-stat-n{font-family:var(--mono);font-size:30px;font-weight:700;color:var(--green)}.admin-stat-l{font-size:13px;color:var(--text2);margin-top:4px}.admin-two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}.admin-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px}.admin-card h3{font-size:16px;font-weight:700;margin-bottom:16px}.admin-list{display:flex;flex-direction:column;gap:2px}.admin-list-item{display:flex;justify-content:space-between;align-items:center;font-size:13px;padding:9px 0;border-bottom:1px solid var(--border)}.admin-list-item:last-child{border-bottom:none}.admin-table-wrap{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);overflow-x:auto}.admin-table{width:100%;border-collapse:collapse}.admin-table th{font-family:var(--mono);font-size:11px;color:var(--text3);text-align:left;padding:14px 16px;border-bottom:1px solid var(--border);letter-spacing:.04em;text-transform:uppercase;white-space:nowrap}.admin-table td{padding:13px 16px;border-bottom:1px solid var(--border);font-size:13px;white-space:nowrap}.admin-table tr:last-child td{border-bottom:none}.admin-table tr:hover td{background:var(--bg3)}.act-btn{background:var(--bg3);border:1px solid var(--border);color:var(--text2);width:30px;height:30px;border-radius:var(--radius);cursor:pointer;font-size:13px;transition:all .15s;margin-right:4px}.act-btn.edit:hover{color:var(--blue);border-color:var(--blue)}.act-btn.del:hover{color:var(--red);border-color:var(--red)}.act-btn:hover{border-color:var(--border2)}.status-pill,.role-pill,.prov-pill{font-family:var(--mono);font-size:11px;padding:3px 10px;border-radius:99px}.status-on{background:#00ff881a;color:var(--green)}.status-off{background:#ff47571a;color:var(--red)}.role-admin{background:#f0a5001f;color:var(--amber)}.role-user{background:var(--bg3);color:var(--text2)}.prov-google{background:#58a6ff1a;color:var(--blue)}.prov-local{background:var(--bg3);color:var(--text3)}.admin-textarea{min-height:100px;resize:vertical;font-family:var(--mono);line-height:1.5}.docker-lab{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px 20px;margin-bottom:12px;display:flex;justify-content:space-between;align-items:center}.dl-name{color:var(--text);font-weight:700;margin-bottom:4px;font-family:var(--mono);font-size:13px}.dl-meta{color:var(--text3);font-size:11px;font-family:var(--mono)}.docker-status{font-family:var(--mono);font-size:11px;padding:4px 12px;border-radius:99px;background:var(--bg3);color:var(--text3)}@media (max-width: 768px){.admin-sidebar{display:none}.admin-main{margin-left:0;padding:24px 16px}.admin-two-col,.form-grid{grid-template-columns:1fr}}.client-shell{display:flex;flex-direction:column;min-height:100vh}.app-content{flex:1 1 auto;display:flex;flex-direction:column}.matrix-canvas{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;opacity:.18}.hero .matrix-canvas{opacity:.22}.logo-img{height:52px;width:52px;object-fit:contain;filter:drop-shadow(0 0 8px rgba(157,108,255,.4))}.auth-logo-img{height:52px;width:52px;object-fit:contain;filter:drop-shadow(0 0 10px rgba(157,108,255,.45))}.nav-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;padding:8px 24px;min-height:64px}.search-bar-input{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:9px 14px;font-family:var(--mono);font-size:13px;color:var(--text);outline:none;min-width:220px}.search-bar-input:focus{border-color:var(--border2)}.btn-amber{background:var(--amber)!important;color:#1a1200!important}.modal-small{max-width:440px}.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:16px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.form-grid textarea{min-height:100px;resize:vertical;font-family:var(--mono)}.db-info{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:16px;font-family:var(--mono);font-size:13px;line-height:1.9}.dim{color:var(--text3)}.green{color:var(--green);font-family:var(--mono)}.amber{color:var(--amber)}.bold{font-weight:700}.admin-main input,.admin-main select,.admin-main textarea,.modal-box input,.modal-box select,.modal-box textarea{width:100%;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:11px 14px;font-family:var(--mono);font-size:13px;color:var(--text);outline:none}.admin-main input:focus,.modal-box input:focus,.modal-box select:focus,.modal-box textarea:focus{border-color:var(--border2)}.lb-mono{font-family:var(--mono);color:var(--text2)}.field-full{grid-column:1 / -1}.avatar{border-radius:50%;background:var(--bg3);border:1px solid var(--border2);display:flex;align-items:center;justify-content:center;font-family:var(--mono);color:var(--green);font-weight:700;overflow:hidden}.avatar img{width:100%;height:100%;object-fit:cover}.conn-section{margin:18px 0}.conn-section h4,.files-section h4{font-family:var(--mono);font-size:12px;color:var(--text3);margin-bottom:8px;letter-spacing:.06em}.conn-box{background:var(--bg3);border:1px solid var(--border2);border-radius:var(--radius);padding:12px 14px;font-family:var(--mono);font-size:13px}.conn-link{color:var(--green);text-decoration:none}.conn-link:hover{text-decoration:underline}.files-section{margin:18px 0}.files-list{display:flex;flex-direction:column;gap:8px}.file-item{display:flex;align-items:center;gap:8px;width:100%;text-align:left;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:10px 14px;font-family:var(--mono);font-size:13px;color:var(--blue);text-decoration:none;cursor:pointer;transition:border-color .2s}.file-item:hover{border-color:var(--blue)}.file-size{color:var(--text3)}.files-admin{margin:18px 0;padding-top:16px;border-top:1px solid var(--border)}.files-admin h4{font-size:14px;margin-bottom:12px}.file-admin-item{display:flex;align-items:center;justify-content:space-between;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:8px 12px;font-family:var(--mono);font-size:12px;margin-bottom:8px}.upload-btn{display:inline-block;cursor:pointer;margin-top:4px}.cat-admin-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}.cat-admin-card{background:var(--bg2);border:1px solid var(--border);border-left-width:3px;border-radius:var(--radius-lg);padding:18px;position:relative}.cat-admin-head{display:flex;align-items:center;gap:10px;margin-bottom:8px}.cat-admin-icon{font-size:22px}.cat-admin-name{font-weight:700;font-size:16px}.cat-admin-meta{font-family:var(--mono);font-size:12px;color:var(--text2)}.cat-admin-desc{font-size:12px;margin-top:6px}.cat-admin-actions{display:flex;gap:4px;margin-top:12px}input[type=color]{height:42px;padding:4px;cursor:pointer}.htb-banner{position:relative;display:flex;align-items:center;gap:26px;background:linear-gradient(135deg,var(--bg2),var(--bg3));border:1px solid var(--border2);border-radius:var(--radius-lg);padding:32px;margin-bottom:18px;overflow:hidden;flex-wrap:wrap}.htb-banner-glow{position:absolute;top:-50%;right:-10%;width:400px;height:400px;background:radial-gradient(circle,rgba(0,255,136,.12),transparent 70%);pointer-events:none}.htb-avatar{position:relative;z-index:1}.htb-identity{flex:1;min-width:220px;z-index:1}.htb-rank-title{font-family:var(--mono);font-size:13px;color:var(--green);letter-spacing:.08em;text-transform:uppercase;margin-bottom:4px}.htb-username{font-family:var(--mono);font-size:26px;font-weight:700;letter-spacing:-.5px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:6px}.htb-rank-box{text-align:center;z-index:1;padding:12px 20px;background:var(--bg);border:1px solid var(--border2);border-radius:var(--radius-lg)}.htb-rank-num{font-family:var(--mono);font-size:32px;font-weight:700;color:var(--green);line-height:1}.htb-rank-label{font-size:11px;color:var(--text2);margin-top:4px}.pbadge.verified{background:#00ff881f;color:var(--green);border-color:#00ff884d}.pbadge.unverified{background:#f0a5001f;color:var(--amber);border-color:#f0a5004d}.htb-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px}.htb-stat{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:18px;text-align:center}.htb-stat-n{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--green)}.htb-stat-l{font-size:12px;color:var(--text2);margin-top:4px}.htb-columns{display:grid;grid-template-columns:1fr 1fr;gap:16px}.htb-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px}.htb-card-title{font-size:16px;font-weight:700;margin-bottom:18px}.htb-cat-list{display:flex;flex-direction:column;gap:16px}.htb-cat-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.htb-cat-val{font-family:var(--mono);font-size:12px;color:var(--text2)}.htb-bar{height:8px;background:var(--bg3);border-radius:99px;overflow:hidden}.htb-bar-fill{height:100%;background:linear-gradient(90deg,var(--green-dim),var(--green));border-radius:99px;transition:width .6s ease}.htb-timeline{display:flex;flex-direction:column;position:relative}.htb-timeline-item{display:flex;gap:14px;padding-bottom:18px;position:relative}.htb-timeline-item:not(:last-child):before{content:"";position:absolute;left:5px;top:14px;bottom:0;width:1px;background:var(--border2)}.htb-timeline-dot{width:11px;height:11px;border-radius:50%;background:var(--green);margin-top:3px;flex-shrink:0;box-shadow:0 0 8px #00ff8880;z-index:1}.htb-timeline-content{flex:1}.htb-timeline-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}.htb-timeline-name{font-weight:700;font-size:14px}.htb-timeline-pts{font-family:var(--mono);font-weight:700;color:var(--green)}.htb-timeline-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.htb-timeline-date{font-family:var(--mono);font-size:11px;color:var(--text3)}@media (max-width: 768px){.htb-stats{grid-template-columns:repeat(2,1fr)}.htb-columns{grid-template-columns:1fr}}.chall-card.solved{border-color:#0f86;background:linear-gradient(160deg,rgba(0,255,136,.06),var(--bg2) 60%);position:relative;overflow:hidden}.chall-card.solved:after{display:none}.solved-banner{position:absolute;top:12px;right:-32px;background:var(--green);color:#04140c;font-family:var(--mono);font-size:10px;font-weight:700;padding:3px 36px;transform:rotate(45deg);letter-spacing:.08em;box-shadow:0 2px 8px #0000004d}.chall-card.solved .chall-name{color:var(--green)}.admin-filters{display:flex;align-items:center;gap:12px;margin-bottom:18px;flex-wrap:wrap}.admin-search{flex:1;min-width:240px;background:var(--admin-surface, var(--bg3));border:1px solid var(--admin-border, var(--border));border-radius:8px;padding:10px 14px;font-family:var(--mono);font-size:13px;color:var(--text);outline:none}.admin-search:focus{border-color:var(--amber)}.admin-filters select{background:var(--admin-surface, var(--bg3));border:1px solid var(--admin-border, var(--border));border-radius:8px;padding:10px 12px;font-family:var(--mono);font-size:13px;color:var(--text);outline:none;cursor:pointer}.admin-count{font-family:var(--mono);font-size:12px;color:var(--text2)}.sort-btn{background:var(--admin-surface, var(--bg3));border:1px solid var(--admin-border, var(--border));border-radius:8px;padding:10px 14px;font-family:var(--mono);font-size:12px;color:var(--text2);cursor:pointer;transition:all .2s}.sort-btn:hover{border-color:var(--amber);color:var(--amber)}.toggle-pill{font-family:var(--mono);font-size:11px;font-weight:700;padding:4px 12px;border-radius:99px;cursor:pointer;border:1px solid;transition:all .2s}.toggle-pill.on{background:#00ff881f;color:var(--green);border-color:#0f86}.toggle-pill.on:hover{background:#0f83}.toggle-pill.off{background:#7878781f;color:var(--text3);border-color:var(--border2)}.toggle-pill.off:hover{background:#78787833}.row-inactive{opacity:.5}.checkbox-row{display:flex;align-items:center;gap:10px;margin:6px 0 4px;font-size:14px;cursor:pointer}.checkbox-row input{width:auto!important;cursor:pointer}.filter-select-group{display:flex;flex-direction:column;gap:5px}.filter-select-group label{font-family:var(--mono);font-size:11px;color:var(--text3);letter-spacing:.05em}.filter-select-group select{background:var(--bg2);border:1px solid var(--border2);border-radius:var(--radius);padding:10px 14px;font-family:var(--mono);font-size:13px;color:var(--text);outline:none;cursor:pointer;min-width:200px}.filter-select-group select:focus{border-color:var(--green)}.pagination{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:32px;flex-wrap:wrap}.page-btn{background:var(--bg2);border:1px solid var(--border2);color:var(--text2);min-width:40px;height:40px;padding:0 12px;border-radius:var(--radius);font-family:var(--mono);font-size:13px;cursor:pointer;transition:all .15s}.page-btn:hover:not(:disabled){border-color:var(--green);color:var(--green)}.page-btn.active{background:var(--green);color:#04140c;border-color:var(--green);font-weight:700}.page-btn:disabled{opacity:.4;cursor:not-allowed}html[data-theme=light]{--bg: #f4f6f8;--bg2: #ffffff;--bg3: #eef1f4;--bg4: #e3e8ee;--border: rgba(0, 170, 90, .18);--border2: rgba(0, 170, 90, .4);--green: #00a85a;--green-dim: #00874a;--blue: #2563eb;--amber: #d18700;--red: #e0344a;--purple: #7c3aed;--text: #1a2230;--text2: #55606e;--text3: #8a94a0}html[data-theme=light] body{background:var(--bg);color:var(--text)}html[data-theme=light] .hero h1{background:linear-gradient(135deg,#1a2230 42%,var(--green) 100%);-webkit-background-clip:text;background-clip:text}html[data-theme=light] .matrix-canvas{opacity:.08}html[data-theme=light] .hero .matrix-canvas{opacity:.1}html[data-theme=light] .chall-card,html[data-theme=light] .cat-card,html[data-theme=light] .learn-card,html[data-theme=light] .htb-card,html[data-theme=light] .htb-stat,html[data-theme=light] .admin-card{box-shadow:0 1px 3px #0000000f}html[data-theme=light] .chall-card.solved{background:linear-gradient(160deg,rgba(0,168,90,.08),var(--bg2) 60%)}html[data-theme=light] .navbar{background:#ffffffd9;border-bottom:1px solid var(--border)}.theme-toggle{display:flex;align-items:center;width:100%;background:transparent;border:none;color:var(--text2);padding:9px 12px;font-family:var(--sans);font-size:14px;text-align:left;cursor:pointer;border-radius:var(--radius)}.theme-toggle:hover{background:var(--bg3);color:var(--text)}.settings-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:26px;margin-bottom:18px}.settings-card-title{font-size:17px;font-weight:700;margin-bottom:6px}.settings-desc{font-size:13px;color:var(--text2);margin-bottom:20px}.settings-soon{opacity:.6}.theme-choices{display:flex;gap:16px;flex-wrap:wrap}.theme-choice{background:var(--bg3);border:2px solid var(--border);border-radius:var(--radius-lg);padding:14px;cursor:pointer;transition:all .2s;display:flex;flex-direction:column;gap:10px;align-items:center;min-width:150px}.theme-choice:hover{border-color:var(--border2)}.theme-choice.active{border-color:var(--green);box-shadow:0 0 0 3px #00ff881f}.theme-choice-label{font-family:var(--mono);font-size:13px;color:var(--text)}.theme-preview{width:120px;height:72px;border-radius:8px;position:relative;overflow:hidden;border:1px solid var(--border)}.theme-preview-dark{background:#0d1117}.theme-preview-light{background:#f4f6f8}.theme-preview .tp-bar{position:absolute;top:12px;left:12px;right:12px;height:10px;border-radius:3px;background:#0f8;opacity:.8}.theme-preview-light .tp-bar{background:#00a85a}.theme-preview .tp-dot{position:absolute;bottom:12px;left:12px;width:22px;height:22px;border-radius:50%;background:#58a6ff}.theme-preview-light .tp-dot{background:#2563eb}.badges-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}.badge-card{display:flex;gap:12px;align-items:flex-start;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius-lg);padding:14px;transition:all .2s}.badge-card.unlocked{border-color:var(--border2);background:linear-gradient(150deg,rgba(0,255,136,.07),var(--bg3) 70%)}.badge-card.locked{opacity:.65}.badge-icon{font-size:30px;line-height:1;flex-shrink:0;width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:var(--bg2);border-radius:10px}.badge-name{font-weight:700;font-size:14px}.badge-card.unlocked .badge-name{color:var(--green)}.badge-desc{font-size:11.5px;color:var(--text2);margin-top:2px;line-height:1.4}.badge-progress{height:5px;background:var(--bg);border-radius:99px;overflow:hidden;margin-top:8px}.badge-progress-fill{height:100%;background:var(--green-dim);border-radius:99px}.settings-danger{border-color:#ff47574d}.settings-danger .settings-card-title{color:var(--red)}.btn-danger{background:var(--red);color:#fff;border:none;padding:11px 20px;border-radius:var(--radius);font-family:var(--sans);font-weight:600;font-size:14px;cursor:pointer;transition:all .2s}.btn-danger:hover{box-shadow:0 0 16px #ff475766}.country-flag{font-size:22px}.social-links{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}.social-link{font-family:var(--mono);font-size:12px;padding:4px 11px;background:var(--bg3);border:1px solid var(--border);border-radius:99px;color:var(--text2);text-decoration:none;transition:all .2s}.social-link:hover{border-color:var(--green);color:var(--green)}.modal-subtitle{font-family:var(--mono);font-size:12px;color:var(--text3);margin:20px 0 10px;letter-spacing:.06em;text-transform:uppercase}.lb-flag{font-size:18px;text-align:center}.lb-clickable{cursor:pointer;transition:color .2s}.lb-clickable:hover span{color:var(--green)}.reason-list{display:flex;flex-direction:column;gap:6px;margin:10px 0;max-height:280px;overflow-y:auto}.reason-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;font-size:13px;transition:all .15s}.reason-item:hover{border-color:var(--border2)}.reason-item.selected{border-color:var(--green);background:#00ff880f}.reason-item input{width:auto!important}.flag-img{width:24px;height:18px;border-radius:2px;object-fit:cover;vertical-align:middle;box-shadow:0 0 0 1px #0000001a}.flag-img-lg{width:28px;height:21px;border-radius:3px;object-fit:cover;vertical-align:middle;box-shadow:0 0 0 1px #00000026}.lb-flag{text-align:center}.sort-btn.active-filter{border-color:var(--admin-amber, var(--amber));color:var(--admin-amber, var(--amber))}.logs-list{display:flex;flex-direction:column;gap:8px}.log-item{display:flex;align-items:center;gap:16px;background:var(--admin-surface, var(--bg2));border:1px solid var(--admin-border, var(--border));border-radius:8px;padding:12px 16px}.log-deletion{border-left:3px solid #ff5c6c}.log-action{font-weight:700;font-size:13px;min-width:180px}.log-body{flex:1;display:flex;flex-direction:column;gap:2px}.log-actor{font-family:var(--mono);font-size:12px;color:var(--admin-amber, var(--amber))}.log-detail{font-size:12.5px;color:var(--text2)}.log-date{font-family:var(--mono);font-size:11px;color:var(--text3);white-space:nowrap}@media (max-width: 640px){.log-item{flex-direction:column;align-items:flex-start;gap:6px}.log-action{min-width:0}}@media (max-width: 768px){.nav-links{gap:0}.nav-link{padding:8px 10px;font-size:13px}.page-inner{padding:28px 16px}.htb-banner{flex-direction:column;text-align:center}.htb-identity{text-align:center}.social-links{justify-content:center}.admin-sidebar{position:static;width:100%;min-width:0;flex-direction:row;flex-wrap:wrap;align-items:center;padding:12px}.admin-nav{flex-direction:row;flex-wrap:wrap}.admin-main{margin-left:0;padding:20px 16px}.admin-user-box{border-top:none;border-left:1px solid var(--admin-border);padding-top:0;padding-left:14px;margin-top:0}.admin-status-line{display:none}}html,body{max-width:100%;overflow-x:hidden}*{box-sizing:border-box}img{max-width:100%}.hamburger{display:none;background:transparent;border:1px solid var(--border2);color:var(--text);width:40px;height:40px;border-radius:var(--radius);font-size:18px;cursor:pointer}.mobile-nav{display:none}@media (max-width: 900px){.htb-columns,.form-grid{grid-template-columns:1fr}}@media (max-width: 680px){.nav-inner{padding:8px 12px;min-height:58px;gap:8px}.nav-links,.score-pill{display:none}.hamburger{display:block}.logo{gap:8px;font-size:18px;min-width:0;flex-shrink:1}.logo span{font-size:18px;white-space:nowrap}.logo img,.logo-img{height:38px;width:38px;object-fit:contain;flex-shrink:0}.nav-right{gap:8px;flex-shrink:0}.mobile-nav{display:flex;flex-direction:column;background:var(--bg2);border-bottom:1px solid var(--border2);padding:8px;gap:2px}.mobile-nav-link{padding:13px 16px;border-radius:var(--radius);font-family:var(--mono);font-size:15px;color:var(--text);text-decoration:none}.mobile-nav-link.active,.mobile-nav-link:active{color:var(--green);background:var(--border)}.page-inner{padding:22px 14px}.hero-content{padding:0 14px}.hero{min-height:70vh}.hero h1{font-size:clamp(38px,13vw,60px);letter-spacing:-1px}.hero p{font-size:15px}.cat-section{padding:40px 14px}.challenges-grid,.cat-grid,.learn-grid,.badges-grid,.cat-admin-grid{grid-template-columns:1fr!important}.htb-stats{grid-template-columns:repeat(2,1fr);gap:10px}.htb-columns,.form-grid{grid-template-columns:1fr}.theme-choices{flex-direction:column}.htb-banner{flex-direction:column;text-align:center;padding:22px 16px;gap:16px}.htb-identity{text-align:center;width:100%}.htb-username{justify-content:center;font-size:21px}.social-links{justify-content:center}.htb-rank-box{width:100%}.page-h2{font-size:24px}.hero-stats{gap:16px}.modal-overlay{padding:10px}.modal-box{padding:22px 18px;max-height:92vh}.modal-large,.modal-small{max-width:100%}.filter-row{flex-direction:column;align-items:stretch;gap:10px}.filter-select-group select{min-width:0;width:100%}.admin-filters{flex-direction:column;align-items:stretch}.admin-search{min-width:0;width:100%}.page-title-row{flex-direction:column;align-items:stretch;gap:12px}.search-bar-input{min-width:0;width:100%}.pagination{gap:5px}.page-btn{min-width:34px;height:34px;padding:0 8px;font-size:12px}}@media (max-width: 860px){.admin-sidebar{position:static;width:100%;min-width:0;flex-direction:row;flex-wrap:wrap;align-items:center;gap:8px;padding:12px 14px;box-shadow:none}.admin-brand{margin-bottom:0}.admin-brand-sub,.admin-status-line{display:none}.admin-nav{flex-direction:row;flex-wrap:wrap;flex:1 1 100%;gap:4px}.anav{padding:8px 11px;font-size:12px}.admin-user-box{border:none;padding:0;margin:0 0 0 auto}.admin-main{margin-left:0;padding:20px 14px}.admin-table-wrap{overflow-x:auto}.admin-stats-grid{grid-template-columns:repeat(2,1fr)}}.site-footer{border-top:1px solid var(--border);background:var(--bg2);margin-top:60px}.footer-inner{max-width:1200px;margin:0 auto;padding:40px 24px;display:flex;flex-direction:column;align-items:center;gap:18px;text-align:center}.footer-brand{font-family:var(--sans);font-weight:800;font-size:22px;letter-spacing:-.5px}.footer-brand em{color:var(--green);font-style:normal}.footer-social{display:flex;gap:12px}.footer-icon{width:38px;height:38px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:var(--bg3);border:1px solid var(--border);color:var(--text2);transition:all .2s}.footer-icon:hover{color:var(--green);border-color:var(--green);transform:translateY(-2px)}.footer-copy{font-family:var(--mono);font-size:12px;color:var(--text3)}@media (max-width: 680px){.footer-inner{flex-direction:column;text-align:center;padding:28px 16px}}.cat-icon{display:flex;align-items:center}.learn-icon{display:flex;align-items:center;color:var(--green)}.cat-dropdown{position:relative;min-width:220px}.cat-dropdown-btn{width:100%;display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--bg2);border:1px solid var(--border2);border-radius:var(--radius);padding:10px 14px;font-family:var(--mono);font-size:13px;color:var(--text);cursor:pointer;transition:border-color .2s}.cat-dropdown-btn:hover{border-color:var(--green)}.cat-dropdown-label{display:flex;align-items:center;gap:9px}.cat-chevron{transition:transform .2s;flex-shrink:0}.cat-chevron.open{transform:rotate(180deg)}.cat-dropdown-menu{position:absolute;top:calc(100% + 6px);left:0;right:0;background:var(--bg2);border:1px solid var(--border2);border-radius:var(--radius);padding:6px;z-index:50;max-height:320px;overflow-y:auto;box-shadow:0 12px 32px #0006}.cat-option{width:100%;display:flex;align-items:center;gap:10px;background:transparent;border:none;border-radius:7px;padding:10px 12px;font-family:var(--mono);font-size:13px;color:var(--text2);cursor:pointer;text-align:left;transition:all .15s}.cat-option:hover{background:var(--bg3);color:var(--text)}.cat-option.selected{background:var(--border);color:var(--green)}.diff-tabs{display:flex;gap:8px;flex-wrap:wrap}.diff-tab{background:var(--bg2);border:1px solid var(--border2);border-radius:var(--radius);padding:9px 18px;font-family:var(--mono);font-size:13px;color:var(--text2);cursor:pointer;transition:all .2s}.diff-tab:hover{color:var(--text);border-color:var(--text3)}.diff-tab.active{font-weight:700}.diff-tab.diff-all.active{background:var(--text);color:var(--bg);border-color:var(--text)}.diff-tab.diff-easy.active{background:#00ff8826;color:var(--green);border-color:var(--green)}.diff-tab.diff-medium.active{background:#f0a50026;color:var(--amber);border-color:var(--amber)}.diff-tab.diff-hard.active{background:#ff475726;color:var(--red);border-color:var(--red)}.diff-tab.diff-insane.active{background:#9d6cff26;color:var(--purple);border-color:var(--purple)}@media (max-width: 680px){.cat-dropdown{min-width:0;width:100%}.diff-tabs{width:100%}.diff-tab{flex:1;padding:9px 8px;text-align:center}.filters-controls{gap:12px}.filter-group{flex-direction:column;align-items:stretch;gap:6px;width:100%}.filter-sort{margin-left:0;width:100%;min-width:0}.filter-search{max-width:none}}.badge-icon{display:flex;align-items:center;justify-content:center}.badge-card.unlocked .badge-icon{color:var(--green)}.badge-card.locked .badge-icon{color:var(--text3)}.theme-switch-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 12px}.theme-switch-label{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text2)}.theme-switch-label svg{flex-shrink:0}.toggle-switch{position:relative;width:42px;height:24px;border-radius:99px;background:var(--bg4);border:1px solid var(--border2);cursor:pointer;transition:background .2s;flex-shrink:0;padding:0}.toggle-switch.on{background:var(--green);border-color:var(--green)}.toggle-knob{position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;background:var(--text);transition:transform .2s}.toggle-switch.on .toggle-knob{transform:translate(18px);background:#04140c}.hints-list{display:flex;flex-direction:column;gap:8px}.hint-row{display:flex;align-items:center;gap:10px}.hint-num{font-family:var(--mono);font-size:12px;color:var(--text3);min-width:24px}.hint-row .hint-text{flex:1;background:#00ff880f;border:1px solid rgba(0,255,136,.2);border-radius:var(--radius);padding:10px 14px;font-size:13px;color:var(--text)}.hint-locked{flex:1;font-size:12.5px;color:var(--text3);font-style:italic;padding:10px 14px}.hint-btn{background:var(--bg3);border:1px solid var(--border2);color:var(--text);padding:9px 16px;border-radius:var(--radius);font-family:var(--mono);font-size:12.5px;cursor:pointer;transition:all .2s}.hint-btn:hover{border-color:var(--amber);color:var(--amber)}.hint-cost{color:var(--amber);font-weight:700}.hint-confirm{display:flex;align-items:center;gap:10px;flex:1;background:var(--bg3);border:1px solid var(--border2);border-radius:var(--radius);padding:8px 14px;font-size:12.5px}.hint-yes{background:var(--green);color:#04140c;border:none;padding:5px 14px;border-radius:6px;font-weight:700;cursor:pointer;font-family:var(--mono);font-size:12px}.hint-no{background:transparent;color:var(--text2);border:1px solid var(--border2);padding:5px 14px;border-radius:6px;cursor:pointer;font-family:var(--mono);font-size:12px}.hint-no:hover{color:var(--text)}.first-blood{font-family:var(--mono);font-size:12px;color:#ff5c6c;background:#ff5c6c1a;border:1px solid rgba(255,92,108,.3);padding:3px 10px;border-radius:99px}.hints-editor{margin:18px 0;padding:16px;background:var(--admin-surface, var(--bg3));border:1px solid var(--admin-border, var(--border));border-radius:var(--radius)}.hints-editor-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.hints-editor-head label{font-family:var(--mono);font-size:12px;color:var(--text2);letter-spacing:.05em}.btn-sm{padding:5px 12px;font-size:12px}.hint-edit-row{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}.hint-edit-controls{display:flex;align-items:center;gap:10px}.hint-edit-num{font-family:var(--mono);font-size:12px;font-weight:700;color:var(--amber);min-width:24px}.hint-edit-cost-wrap{display:flex;align-items:center;gap:6px;margin-right:auto}.hint-edit-cost{width:64px;background:var(--bg2);border:1px solid var(--border2);border-radius:6px;padding:7px 8px;font-size:13px;color:var(--text);outline:none}.hint-edit-cost-unit{font-family:var(--mono);font-size:11px;color:var(--text3)}.hint-edit-text{width:100%;background:var(--bg2);border:1px solid var(--border2);border-radius:6px;padding:9px 12px;font-size:13px;color:var(--text);outline:none}.hint-edit-text:focus,.hint-edit-cost:focus{border-color:var(--amber)}.hint-edit-del{background:transparent;border:1px solid var(--border2);color:#ff5c6c;width:34px;height:34px;border-radius:6px;cursor:pointer;flex-shrink:0}.hint-edit-del:hover{border-color:#ff5c6c;background:#ff5c6c1a}.notif-bell{position:relative}.notif-btn{position:relative;width:38px;height:38px;border-radius:50%;background:var(--bg3);border:1px solid var(--border2);color:var(--text2);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s}.notif-btn:hover{color:var(--green);border-color:var(--green)}.notif-badge{position:absolute;top:-4px;right:-4px;background:var(--red);color:#fff;font-family:var(--mono);font-size:10px;font-weight:700;min-width:18px;height:18px;border-radius:99px;display:flex;align-items:center;justify-content:center;padding:0 4px;border:2px solid var(--bg)}.notif-panel{position:absolute;top:48px;right:0;width:340px;max-width:90vw;background:var(--bg2);border:1px solid var(--border2);border-radius:var(--radius-lg);z-index:120;box-shadow:0 16px 40px #0006;overflow:hidden}.notif-head{padding:14px 16px;font-weight:700;font-size:14px;border-bottom:1px solid var(--border)}.notif-empty{padding:30px 16px;text-align:center;color:var(--text3);font-size:13px}.notif-items{max-height:380px;overflow-y:auto}.notif-item{display:flex;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border);transition:background .15s}.notif-item:last-child{border-bottom:none}.notif-item.unread{background:#00ff880d}.notif-icon{font-size:18px;flex-shrink:0}.notif-title{font-size:13px;font-weight:600;color:var(--text)}.notif-body{font-size:12px;color:var(--text2);margin-top:2px}.notif-time{font-family:var(--mono);font-size:10.5px;color:var(--text3);margin-top:4px}@media (max-width: 680px){.notif-panel{position:fixed;top:60px;right:8px;left:8px;width:auto}}.filter-row-2{margin-top:14px}.sort-select{background:var(--bg2);border:1px solid var(--border2);border-radius:var(--radius);padding:10px 14px;font-family:var(--mono);font-size:13px;color:var(--text);outline:none;cursor:pointer;min-width:200px}.sort-select:focus{border-color:var(--green)}.filters-bar{display:flex;flex-direction:column;gap:14px;margin-bottom:26px}.filter-search{width:100%;max-width:420px}.filters-controls{display:flex;flex-wrap:wrap;align-items:center;gap:16px}.filter-group{display:flex;align-items:center;gap:8px}.filter-tag{font-family:var(--mono);font-size:10px;color:var(--text3);letter-spacing:.08em;text-transform:uppercase;white-space:nowrap}.filter-sort{min-width:170px;margin-left:auto}.notif-icon{display:flex;align-items:center}.ni-solve{color:var(--green)}.ni-badge{color:var(--amber)}.ni-new{color:var(--blue)}.ni-info{color:var(--text2)}.landing{position:relative;min-height:100vh;overflow-x:hidden}.landing-bg{position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;opacity:.18;pointer-events:none}.landing>*:not(.landing-bg){position:relative;z-index:1}.landing-nav{position:sticky;top:0;z-index:50;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#07090db3;border-bottom:1px solid var(--border)}.landing-nav-inner{max-width:1200px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between}.landing-logo{display:flex;align-items:center;gap:12px;font-family:var(--sans);font-weight:800;font-size:24px;letter-spacing:-.5px}.landing-logo img{width:52px;height:52px;object-fit:contain}.landing-logo em{color:var(--green);font-style:normal}.landing-nav-links{display:flex;align-items:center;gap:28px}.landing-nav-links a{color:var(--text2);font-family:var(--mono);font-size:13px;text-decoration:none;transition:color .2s}.landing-nav-links a:hover{color:var(--green)}.landing-login-btn{background:var(--green);color:#04140c;border:none;padding:9px 22px;font-family:var(--mono);font-size:13px;font-weight:700;border-radius:var(--radius);cursor:pointer;transition:transform .15s,box-shadow .2s}.landing-login-btn:hover{transform:translateY(-1px);box-shadow:0 6px 20px #00ff884d}.landing-hero{max-width:900px;margin:0 auto;padding:90px 24px 60px;text-align:center}.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--bg3);border:1px solid var(--border2);border-radius:99px;padding:7px 16px;font-family:var(--mono);font-size:12px;color:var(--text2);margin-bottom:28px;animation:fadeUp .6s ease both}.hero-badge-dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green);animation:pulse 2s infinite}.hero-title{font-family:var(--sans);font-weight:800;font-size:clamp(48px,9vw,92px);line-height:.95;letter-spacing:-.03em;margin-bottom:26px}.hero-line{display:block;animation:fadeUp .7s ease both}.hero-line:nth-child(2){animation-delay:.12s}.hero-line:nth-child(3){animation-delay:.24s}.hero-accent{color:var(--green);text-shadow:0 0 40px rgba(0,255,136,.4)}.hero-sub{font-size:18px;color:var(--text2);line-height:1.6;max-width:620px;margin:0 auto 36px;animation:fadeUp .7s ease .36s both}.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;animation:fadeUp .7s ease .48s both}.hero-cta-primary{display:inline-flex;align-items:center;gap:10px;background:var(--green);color:#04140c;border:none;padding:15px 32px;font-family:var(--mono);font-size:15px;font-weight:700;border-radius:var(--radius);cursor:pointer;transition:transform .15s,box-shadow .2s}.hero-cta-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px #00ff8859}.hero-cta-ghost{display:inline-flex;align-items:center;gap:6px;background:transparent;color:var(--text);border:1px solid var(--border2);padding:15px 28px;font-family:var(--mono);font-size:15px;border-radius:var(--radius);cursor:pointer;text-decoration:none;transition:border-color .2s,color .2s}.hero-cta-ghost:hover{border-color:var(--green);color:var(--green)}.hero-terminal{max-width:580px;margin:60px auto 0;background:var(--bg2);border:1px solid var(--border2);border-radius:var(--radius-lg);overflow:hidden;text-align:left;box-shadow:0 30px 80px #00000080;animation:fadeUp .8s ease .6s both}.hero-terminal-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;background:var(--bg3);border-bottom:1px solid var(--border)}.hero-terminal-bar span{width:11px;height:11px;border-radius:50%;background:var(--text3)}.hero-terminal-bar span:nth-child(1){background:#ff5f56}.hero-terminal-bar span:nth-child(2){background:#ffbd2e}.hero-terminal-bar span:nth-child(3){background:#27c93f}.hero-terminal-bar em{margin-left:10px;font-family:var(--mono);font-size:12px;color:var(--text3);font-style:normal}.hero-terminal-body{margin:0;padding:20px;font-family:var(--mono);font-size:13px;line-height:1.7;color:var(--green);white-space:pre-wrap}.landing-features{max-width:1100px;margin:40px auto;padding:0 24px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.feature-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 22px;transition:transform .2s,border-color .2s}.feature-card:hover{transform:translateY(-4px);border-color:var(--border2)}.feature-card svg{color:var(--green);margin-bottom:14px}.feature-card h3{font-family:var(--sans);font-size:18px;font-weight:700;margin-bottom:8px}.feature-card p{font-size:13.5px;color:var(--text2);line-height:1.5}.landing-section{max-width:1100px;margin:90px auto;padding:0 24px}.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s ease}.reveal.shown{opacity:1;transform:none}.section-head{text-align:center;margin-bottom:48px}.section-kicker{font-family:var(--mono);font-size:12px;color:var(--green);letter-spacing:.1em}.section-head h2{font-family:var(--sans);font-size:clamp(32px,5vw,48px);font-weight:800;letter-spacing:-.02em;margin:12px 0 10px}.section-head p{color:var(--text2);font-size:16px}.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.cat-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;transition:transform .2s,border-color .2s;position:relative;overflow:hidden}.cat-card:before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:var(--cat);opacity:.6}.cat-card:hover{transform:translateY(-5px);border-color:var(--cat)}.cat-icon{width:52px;height:52px;border-radius:12px;background:color-mix(in srgb,var(--cat) 14%,transparent);color:var(--cat);display:flex;align-items:center;justify-content:center;margin-bottom:18px}.cat-card h3{font-family:var(--sans);font-size:19px;font-weight:700;margin-bottom:8px}.cat-card p{font-family:var(--mono);font-size:12.5px;color:var(--text2)}.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.step-card{position:relative;padding:24px}.step-num{font-family:var(--mono);font-size:42px;font-weight:700;color:var(--green);opacity:.25}.step-card h3{font-family:var(--sans);font-size:18px;font-weight:700;margin:8px 0 10px}.step-card p{font-size:14px;color:var(--text2);line-height:1.55}.landing-cta{max-width:760px;margin:100px auto;padding:64px 32px;text-align:center;background:linear-gradient(135deg,#00ff8814,#00ff8805);border:1px solid var(--border2);border-radius:var(--radius-lg)}.landing-cta h2{font-family:var(--sans);font-size:clamp(30px,5vw,44px);font-weight:800;letter-spacing:-.02em;margin-bottom:14px}.landing-cta p{color:var(--text2);font-size:17px;margin-bottom:32px}.landing-footer{border-top:1px solid var(--border);padding:40px 24px;text-align:center}.landing-footer .landing-logo{justify-content:center;margin-bottom:12px;font-size:18px}.landing-footer .landing-logo img{width:44px;height:44px}.landing-footer p{font-family:var(--mono);font-size:12px;color:var(--text3)}@keyframes fadeUp{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}@media (max-width: 880px){.landing-features,.cat-grid,.steps-grid{grid-template-columns:repeat(2,1fr)}.landing-nav-links a{display:none}.landing-nav-inner{padding:12px 14px;gap:8px}.landing-nav-links{gap:10px;flex-shrink:0}.landing-logo{font-size:19px;gap:8px;min-width:0;flex-shrink:1;overflow:hidden}.landing-logo span{white-space:nowrap}.landing-logo img{width:38px;height:38px;flex-shrink:0}.landing-theme-btn{flex-shrink:0}.landing-login-btn{flex-shrink:0;padding:8px 16px}}@media (max-width: 520px){.landing-features,.cat-grid,.steps-grid{grid-template-columns:1fr}.hero-terminal-body{font-size:11.5px}.landing-logo{font-size:17px}.landing-logo img{width:34px;height:34px}.landing-login-btn{padding:7px 14px;font-size:12px}}.landing-theme-btn{width:38px;height:38px;border-radius:50%;background:var(--bg3);border:1px solid var(--border2);color:var(--text2);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s}.landing-theme-btn:hover{color:var(--green);border-color:var(--green)}.landing-lang-btn{height:38px;min-width:38px;padding:0 10px;border-radius:19px;background:var(--bg3);border:1px solid var(--border2);color:var(--text2);font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.5px;cursor:pointer;transition:all .2s}.landing-lang-btn:hover{color:var(--green);border-color:var(--green)}.lang-choices{display:flex;gap:12px;flex-wrap:wrap}.lang-choice{display:flex;align-items:center;gap:8px;background:var(--bg3);border:2px solid var(--border);border-radius:var(--radius-lg);padding:12px 18px;cursor:pointer;transition:all .2s;font-family:var(--mono);font-size:14px;color:var(--text)}.lang-choice:hover{border-color:var(--border2)}.lang-choice.active{border-color:var(--green);box-shadow:0 0 0 3px #00ff881f}.lang-flag{font-size:18px;line-height:1}.podium{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:22px;align-items:end}.podium-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:18px 12px;text-align:center;position:relative;transition:transform .2s;cursor:pointer}.podium-card:hover{transform:translateY(-3px)}.podium-1{border-color:gold;box-shadow:0 0 0 1px #ffd70059,0 8px 30px #ffd7001f;order:2;padding-top:26px}.podium-2{border-color:silver;order:1}.podium-3{border-color:#cd7f32;order:3}.podium-rank{position:absolute;top:-12px;left:50%;transform:translate(-50%);width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-weight:800;font-size:13px;color:#0b0e13}.podium-1 .podium-rank{background:gold}.podium-2 .podium-rank{background:silver}.podium-3 .podium-rank{background:#cd7f32}.podium-name{font-weight:700;margin-top:8px;word-break:break-word}.podium-score{font-family:var(--mono);color:var(--green);font-size:15px;margin-top:2px}.podium-sub{color:var(--text3);font-size:12px;margin-top:2px}@media (max-width: 640px){.podium{grid-template-columns:1fr}.podium-1,.podium-2,.podium-3{order:0}}.lb-table tr.lb-me{background:#00ff8814}.lb-table tr.lb-me td{border-top:1px solid var(--green);border-bottom:1px solid var(--green)}.lb-you-tag{font-family:var(--mono);font-size:10px;color:var(--green);border:1px solid var(--green);border-radius:5px;padding:1px 5px;margin-left:6px}.lb-search{width:100%;max-width:280px}.feedback-textarea{width:100%;background:var(--bg3);border:1px solid var(--border2);border-radius:var(--radius);padding:12px 14px;color:var(--text);font-family:inherit;font-size:14px;line-height:1.5;resize:vertical;min-height:130px;transition:border-color .2s}.feedback-textarea:focus{outline:none;border-color:var(--green)}.feedback-counter{text-align:right;font-family:var(--mono);font-size:11px;color:var(--text3);margin-top:6px}.feedback-success{text-align:center;padding:22px 10px;color:var(--green);display:flex;flex-direction:column;align-items:center;gap:12px}.feedback-success p{color:var(--text);font-size:15px;margin:0}.feedback-page{flex:1 1 auto;display:flex;padding-top:0}.feedback-screen{flex:1 1 auto;display:flex;align-items:center;justify-content:center;padding:16px;background:radial-gradient(ellipse 60% 50% at 50% 38%,rgba(0,255,136,.07),transparent 70%)}body.feedback-route .site-footer{margin-top:0}.feedback-card{width:100%;max-width:600px;padding:28px 36px 24px;border-radius:18px;border:1px solid var(--border2);box-shadow:0 26px 70px #00000073}.feedback-head{text-align:center;margin-bottom:18px;padding-bottom:16px;border-bottom:1px solid var(--border)}.feedback-title{display:inline-flex;align-items:center;gap:10px;font-size:27px;font-weight:800;letter-spacing:-.5px}.feedback-title svg{color:var(--green)}.feedback-subtitle{color:var(--text2);margin-top:8px;font-size:14px}.feedback-stars{display:flex;gap:6px}.star-btn{background:none;border:none;cursor:pointer;padding:2px;line-height:0;transition:transform .1s}.star-btn:hover{transform:scale(1.15)}.htb-banner-img{background-size:cover;background-position:center}.htb-banner-img .htb-username,.htb-banner-img .profile-bio,.htb-banner-img .htb-rank-title{color:#f4f6f8}.podium-1{background:linear-gradient(180deg,rgba(255,215,0,.12),var(--bg2))}.podium-2{background:linear-gradient(180deg,rgba(192,192,192,.12),var(--bg2))}.podium-3{background:linear-gradient(180deg,rgba(205,127,50,.14),var(--bg2))}.podium-has-banner{background-size:cover;background-position:center}.podium-has-banner .podium-name,.podium-has-banner .podium-sub{color:#f4f6f8}.preset-grid{display:flex;flex-wrap:wrap;gap:10px;margin:4px 0 10px}.preset-item{cursor:pointer;border:2px solid var(--border2);border-radius:10px;background:var(--bg3);padding:0;overflow:hidden;transition:all .15s}.preset-item:hover{border-color:var(--text2)}.preset-item.selected{border-color:var(--green);box-shadow:0 0 0 3px #00ff882e}.avatar-modal{max-width:560px}.avatar-modal .preset-grid{gap:14px;justify-content:flex-start}.avatar-preset{width:76px;height:76px}.avatar-preset img{width:100%;height:100%;object-fit:cover;display:block}.avatar-upload{width:76px;height:76px;display:flex;align-items:center;justify-content:center;color:var(--text2);border-style:dashed}.avatar-upload:hover{color:var(--green);border-color:var(--green)}.banner-preset{width:154px;height:50px;background-size:cover;background-position:center}.banner-none{display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:12px;color:var(--text2)}.banner-edit{position:absolute;top:12px;right:12px;z-index:2;display:inline-flex;align-items:center;gap:6px;background:#00000080;color:#fff;border:1px solid rgba(255,255,255,.25);border-radius:8px;padding:5px 10px;font-size:12px;font-family:var(--mono);cursor:pointer;transition:all .15s}.banner-edit:hover{background:var(--green);color:#04140c;border-color:var(--green)}.notfound-screen{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;overflow:hidden}.notfound-bg{position:absolute;top:0;right:0;bottom:0;left:0;opacity:.25;pointer-events:none}.notfound-card{position:relative;z-index:1;text-align:center;max-width:520px}.notfound-code{font-family:var(--mono);font-weight:800;font-size:clamp(80px,18vw,160px);line-height:1;color:var(--green);text-shadow:0 0 40px rgba(0,255,136,.35);letter-spacing:4px}.notfound-title{font-size:clamp(24px,5vw,36px);margin:8px 0 10px;color:var(--text)}.notfound-desc{color:var(--text2);margin-bottom:26px}.notfound-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.errboundary-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:var(--bg)}.errboundary-card{text-align:center;max-width:460px}.errboundary-icon{width:64px;height:64px;margin:0 auto 18px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-weight:800;font-size:34px;color:var(--red, #ff5470);border:2px solid var(--red, #ff5470);box-shadow:0 0 30px #ff547040}.errboundary-card h1{font-size:26px;margin-bottom:8px;color:var(--text)}.errboundary-card p{color:var(--text2);margin-bottom:22px}html[data-theme=light] .landing-bg{opacity:.08}html[data-theme=light] .landing-nav{background:#f4f6f8cc}html[data-theme=light] .hero-accent{text-shadow:0 0 30px rgba(0,168,90,.25)}html[data-theme=light] .hero-terminal{background:#0d1117;border-color:#00a85a4d;box-shadow:0 20px 50px #0000002e}html[data-theme=light] .hero-terminal-bar{background:#161b22;border-color:#ffffff14}html[data-theme=light] .hero-terminal-body{color:#0f8}html[data-theme=light] .feature-card,html[data-theme=light] .cat-card{box-shadow:0 2px 12px #0000000a}html[data-theme=light] .landing-cta{background:linear-gradient(135deg,#00a85a1a,#00a85a08)}.verify-banner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;background:#f0a5001a;border:1px solid var(--amber);border-radius:var(--radius);padding:14px 18px;margin-bottom:24px;font-size:13.5px;color:var(--amber)}.verify-banner button{background:var(--amber);color:#1a1200;border:none;padding:8px 18px;font-family:var(--mono);font-size:12.5px;font-weight:700;border-radius:6px;cursor:pointer;white-space:nowrap}.verify-banner button:disabled{opacity:.6;cursor:default}.verify-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg);padding:20px}.verify-box{background:var(--bg2);border:1px solid var(--border2);border-radius:var(--radius-lg);padding:44px 36px;max-width:420px;width:100%;text-align:center}.verify-logo{font-family:var(--sans);font-weight:800;font-size:24px;margin-bottom:24px}.verify-logo em{color:var(--green);font-style:normal}.verify-icon{width:64px;height:64px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:32px;margin:0 auto 18px}.verify-icon.ok{background:#00ff8826;color:var(--green)}.verify-icon.err{background:#ff475726;color:var(--red)}.verify-box h2{font-family:var(--sans);font-size:22px;margin-bottom:10px}.verify-msg{color:var(--text2);font-size:14px;margin-bottom:22px;line-height:1.5}.verify-inline-btn{background:#f0a5001f;border:1px solid var(--amber);color:var(--amber);padding:8px 18px;font-family:var(--mono);font-size:12.5px;font-weight:600;border-radius:6px;cursor:pointer;margin-top:4px;transition:all .2s}.verify-inline-btn:hover{background:var(--amber);color:#1a1200}.verify-icon.pending{background:#f0a50026;color:var(--amber)}.verify-secondary{background:transparent;border:none;color:var(--text2);font-family:var(--mono);font-size:12.5px;cursor:pointer;margin-top:14px;text-decoration:underline}.verify-secondary:hover{color:var(--text)}.signup-chart{display:flex;align-items:flex-end;gap:6px;height:120px;padding-top:10px}.signup-bar-wrap{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;gap:6px}.signup-bar{width:100%;max-width:28px;background:linear-gradient(180deg,var(--amber),rgba(240,165,0,.4));border-radius:4px 4px 0 0;min-height:3px;transition:height .3s}.signup-day{font-family:var(--mono);font-size:9px;color:var(--text3);white-space:nowrap}.mono-cell{font-family:var(--mono);font-size:11px;max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.auth-forgot-link{color:var(--text2);font-family:var(--mono);font-size:12px;text-decoration:none}.auth-forgot-link:hover{color:var(--green)}.content-page{max-width:760px;margin:0 auto;padding:30px 24px 80px}.content-back{background:transparent;border:1px solid var(--border2);color:var(--text2);font-family:var(--mono);font-size:12.5px;padding:8px 16px;border-radius:var(--radius);cursor:pointer;margin-bottom:30px;transition:all .2s}.content-back:hover{color:var(--green);border-color:var(--green)}.content-header{text-align:center;margin-bottom:44px}.content-logo{width:200px;height:200px;object-fit:contain;margin:0 auto 6px;display:block}.content-page h1{font-family:var(--sans);font-size:clamp(26px,4vw,34px);font-weight:800;letter-spacing:-.02em;margin-bottom:12px}.content-page .content-sub{display:inline-block;color:var(--green);font-family:var(--mono);font-size:12px;letter-spacing:.15em;text-transform:uppercase;background:#00ff8814;border:1px solid var(--border2);padding:5px 14px;border-radius:99px;margin:0}.content-page h2{font-family:var(--sans);font-size:22px;font-weight:700;margin:32px 0 12px;color:var(--green)}.content-page h3{font-family:var(--sans);font-size:17px;font-weight:600;margin:22px 0 8px}.content-page p,.content-page li{color:var(--text);font-size:15px;line-height:1.7}.content-page ul,.content-page ol{padding-left:22px;margin:10px 0}.content-page li{margin-bottom:6px}.content-page code{font-family:var(--mono);background:var(--bg3);padding:2px 7px;border-radius:4px;font-size:13px;color:var(--green)}.content-page .updated{color:var(--text3);font-size:12px;font-family:var(--mono);margin-top:40px}.faq-item{border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;margin-bottom:10px;background:var(--bg2)}.faq-item h3{margin:0 0 6px;color:var(--green);font-size:15px}.faq-item p{margin:0;color:var(--text2);font-size:14px}.footer-links{display:flex;gap:20px;flex-wrap:wrap;justify-content:center;margin:4px 0}.footer-links a{color:var(--text2);font-family:var(--mono);font-size:12px;text-decoration:none;transition:color .2s}.footer-links a:hover{color:var(--green)}.auth2-screen{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;overflow:hidden}.auth2-bg{position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;opacity:.16;pointer-events:none}html[data-theme=light] .auth2-bg{opacity:.07}.auth2-theme{position:fixed;top:20px;right:20px;z-index:10;width:40px;height:40px;border-radius:50%;background:var(--bg3);border:1px solid var(--border2);color:var(--text2);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s}.auth2-theme:hover{color:var(--green);border-color:var(--green)}.auth2-card{position:relative;z-index:1;width:100%;background:var(--bg2);border:1px solid var(--border2);border-radius:var(--radius-lg);padding:42px 40px;box-shadow:0 30px 80px #00000073}.auth2-wrap{position:relative;z-index:1;width:100%;max-width:470px;display:flex;flex-direction:column}.auth2-logo{display:flex;align-items:center;justify-content:flex-start;gap:14px;text-decoration:none;margin-bottom:24px}.auth2-logo img{width:56px;height:56px;object-fit:contain}.auth2-logo span{font-family:var(--sans);font-weight:800;font-size:28px;letter-spacing:-.5px;color:var(--text)}.auth2-logo em{color:var(--green);font-style:normal}.auth2-title{font-family:var(--sans);font-size:25px;font-weight:700;text-align:left;margin-bottom:6px;letter-spacing:-.01em;line-height:1.25}.auth2-subtitle{text-align:left;color:var(--text2);font-size:14.5px;margin-bottom:28px}.auth2-field{margin-bottom:18px}.auth2-field label{display:block;font-family:var(--mono);font-size:12.5px;color:var(--text2);margin-bottom:8px}.auth2-field input{width:100%;background:var(--bg);border:1px solid var(--border2);border-radius:var(--radius);padding:13px 15px;color:var(--text);font-size:15px;transition:border-color .2s;box-sizing:border-box}.auth2-field input:focus{outline:none;border-color:var(--green)}.auth2-forgot{display:inline-block;font-family:var(--mono);font-size:12px;color:var(--text2);text-decoration:none;margin-bottom:18px}.auth2-forgot:hover{color:var(--green)}.auth2-hint{font-family:var(--mono);font-size:11px;color:var(--text3);margin:-4px 0 16px;line-height:1.4}.auth2-btn{width:100%;background:var(--green);color:#04140c;border:none;padding:14px;font-family:var(--mono);font-size:15px;font-weight:700;border-radius:var(--radius);cursor:pointer;transition:transform .15s,box-shadow .2s}.auth2-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 8px 24px #00ff884d}.auth2-btn:disabled{opacity:.6;cursor:default}.auth2-or{display:flex;align-items:center;gap:12px;margin:20px 0;color:var(--text3);font-family:var(--mono);font-size:12px}.auth2-or:before,.auth2-or:after{content:"";flex:1;height:1px;background:var(--border)}.auth2-oauth{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;background:var(--bg);border:1px solid var(--border2);border-radius:var(--radius);padding:13px;color:var(--text);font-family:var(--mono);font-size:14.5px;font-weight:600;text-decoration:none;cursor:pointer;transition:border-color .2s,background .2s;box-sizing:border-box}.auth2-oauth:hover{border-color:var(--green);background:var(--bg3)}.auth2-err{background:#ff47571a;border:1px solid rgba(255,71,87,.4);color:#ff6b7a;font-size:13px;padding:10px 12px;border-radius:var(--radius);margin-bottom:14px;text-align:center}.auth2-footer{text-align:left;margin-top:24px;font-size:13px;color:var(--text2)}.auth2-footer a{color:var(--green);text-decoration:none;font-weight:600}.auth2-footer a:hover{text-decoration:underline}@media (max-width: 520px){.auth2-card{padding:30px 22px}.auth2-logo{gap:11px;margin-bottom:20px}.auth2-logo img{width:52px;height:52px}.auth2-logo span{font-size:23px}.auth2-title{font-size:22px}.auth2-subtitle{font-size:13.5px;margin-bottom:22px}}.auth2-legal{text-align:center;margin-top:22px;font-size:12px;color:var(--text3);line-height:1.7}.auth2-legal p{margin:0}.auth2-legal a{color:var(--text2);text-decoration:none}.auth2-legal a:hover{color:var(--green);text-decoration:underline}.auth2-sent{text-align:center;padding:10px 0}.auth2-sent-icon{width:64px;height:64px;border-radius:50%;background:#00ff881f;color:var(--green);display:flex;align-items:center;justify-content:center;font-size:30px;margin:0 auto 18px}.auth2-sent p{color:var(--text);font-size:14px;line-height:1.6;margin-bottom:10px}.auth2-sent-hint{color:var(--text3);font-size:12.5px}.solve-history{display:flex;flex-direction:column;gap:2px}.solve-row{display:flex;align-items:center;justify-content:space-between;padding:11px 4px;border-bottom:1px solid var(--border);gap:12px}.solve-row:last-child{border-bottom:none}.solve-row-left{display:flex;align-items:center;gap:12px;min-width:0}.solve-name{font-size:14px;color:var(--text);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.solve-row-right{display:flex;align-items:center;gap:14px;flex-shrink:0}.solve-pts{font-family:var(--mono);font-size:13px;color:var(--green);font-weight:700}.solve-date{font-family:var(--mono);font-size:12px;color:var(--text3)}.ni-firstblood{color:#ff5c6c}.coming-soon{max-width:560px;margin:60px auto;text-align:center;padding:50px 30px;background:var(--bg2);border:1px solid var(--border2);border-radius:var(--radius-lg)}.coming-soon-icon{width:96px;height:96px;margin:0 auto 24px;border-radius:50%;background:#00ff8814;border:1px solid rgba(0,255,136,.2);display:flex;align-items:center;justify-content:center;color:var(--green)}.coming-soon-title{font-family:var(--sans);font-size:26px;font-weight:800;margin-bottom:12px;letter-spacing:-.02em}.coming-soon-sub{color:var(--text2);font-size:15px;line-height:1.7;margin-bottom:26px}.coming-soon-tags{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:26px}.coming-soon-tag{font-family:var(--mono);font-size:12px;color:var(--text2);background:var(--bg3);border:1px solid var(--border);padding:6px 13px;border-radius:99px}.coming-soon-badge{display:inline-block;font-family:var(--mono);font-size:13px;font-weight:700;color:var(--amber, #f0a500);background:#f0a5001a;border:1px solid rgba(240,165,0,.3);padding:8px 18px;border-radius:99px}.landing:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;pointer-events:none;background:radial-gradient(620px circle at 18% 8%,rgba(0,255,136,.1),transparent 60%),radial-gradient(560px circle at 85% 22%,rgba(88,166,255,.08),transparent 60%),radial-gradient(700px circle at 50% 100%,rgba(157,108,255,.07),transparent 65%)}html[data-theme=light] .landing:before{background:radial-gradient(620px circle at 18% 8%,rgba(0,168,90,.08),transparent 60%),radial-gradient(560px circle at 85% 22%,rgba(60,130,230,.06),transparent 60%)}.landing-hero{position:relative}.landing-hero:before{content:"";position:absolute;top:-10%;right:-20%;bottom:30%;left:-20%;z-index:-1;pointer-events:none;background-image:linear-gradient(rgba(0,255,136,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(0,255,136,.05) 1px,transparent 1px);background-size:46px 46px;-webkit-mask-image:radial-gradient(circle at 50% 40%,#000 0%,transparent 72%);mask-image:radial-gradient(circle at 50% 40%,#000 0%,transparent 72%)}html[data-theme=light] .landing-hero:before{background-image:linear-gradient(rgba(0,120,70,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(0,120,70,.07) 1px,transparent 1px)}.hero-accent{position:relative;background:linear-gradient(180deg,var(--green),var(--green-dim));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.hero-badge{-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#161b228c}.hero-cta-primary,.btn-primary,.btn-full,.auth2-btn,.landing-login-btn{position:relative;overflow:hidden}.hero-cta-primary:after,.btn-primary:after,.btn-full:after,.auth2-btn:after,.landing-login-btn:after{content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.45),transparent);transform:skew(-18deg);transition:left .55s ease}.hero-cta-primary:hover:after,.btn-primary:hover:after,.btn-full:hover:after,.auth2-btn:hover:not(:disabled):after,.landing-login-btn:hover:after{left:130%}.feature-card{position:relative;overflow:hidden;background:linear-gradient(180deg,var(--bg2),rgba(13,17,23,.6));transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}.feature-card:before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--green),transparent);opacity:0;transition:opacity .25s ease}.feature-card:hover{transform:translateY(-6px);border-color:var(--border2);box-shadow:0 18px 40px #0006,0 0 0 1px #00ff8814}.feature-card:hover:before{opacity:1}.feature-card svg{width:44px;height:44px;padding:9px;border-radius:12px;background:#00ff8814;border:1px solid rgba(0,255,136,.18);box-sizing:border-box}.cat-card{transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}.cat-card:before{height:3px;transition:opacity .25s ease,height .25s ease}.cat-card:hover{box-shadow:0 18px 44px #00000073}.cat-card:hover:before{opacity:1;height:4px}.cat-card .cat-icon{display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:12px;color:var(--cat, var(--green));background:color-mix(in srgb,var(--cat, var(--green)) 12%,transparent);border:1px solid color-mix(in srgb,var(--cat, var(--green)) 28%,transparent)}.steps-grid{position:relative}.step-num{background:linear-gradient(180deg,var(--green),transparent);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;opacity:.55}.step-card{transition:transform .2s ease}.step-card:hover{transform:translateY(-4px)}.step-card:not(:last-child):after{content:"";position:absolute;top:30px;right:-8px;width:16px;height:1px;background:linear-gradient(90deg,var(--border2),transparent)}@media (max-width: 880px){.step-card:after{display:none}}.landing-cta{position:relative;overflow:hidden}.landing-cta:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;z-index:-1;background:radial-gradient(420px circle at 50% 0%,rgba(0,255,136,.16),transparent 70%);animation:ctaGlow 5s ease-in-out infinite}@keyframes ctaGlow{0%,to{opacity:.55}50%{opacity:1}}.hero-terminal{position:relative}.hero-terminal:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;background:linear-gradient(180deg,rgba(0,255,136,.05),transparent 30%)}.chall-card{transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}.chall-card:hover{box-shadow:0 16px 38px #0000006b,0 0 0 1px #00ff8812}.chall-card:before{content:"";position:absolute;top:0;left:0;bottom:0;width:3px;border-radius:var(--radius-lg) 0 0 var(--radius-lg);background:linear-gradient(180deg,var(--green),transparent);opacity:0;transition:opacity .22s ease}.chall-card:hover:before{opacity:.7}.ftab.active{box-shadow:0 4px 14px #00ff8847}.ftab,.dfab{transition:all .18s ease}.hstat-n,.pstat-n,.profile-score-big span{text-shadow:0 0 24px rgba(0,255,136,.28)}.pstat{transition:transform .2s ease,border-color .2s ease}.pstat:hover{transform:translateY(-3px);border-color:var(--border2)}.solved-item,.solve-row{transition:background .18s ease}.solved-item:hover{border-color:var(--border2)}.solve-row:hover{background:#00ff8808}.profile-avatar{box-shadow:0 0 0 4px #00ff880f}@media (prefers-reduced-motion: reduce){.landing-cta:before,.hero-cta-primary:after,.btn-primary:after,.btn-full:after,.auth2-btn:after,.landing-login-btn:after{animation:none;transition:none}}.card-spotlight{position:relative}.card-spotlight:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;z-index:0;pointer-events:none;opacity:0;transition:opacity .45s ease;border-radius:inherit;background:radial-gradient(circle 260px at var(--mouse-x, 50%) var(--mouse-y, 50%),var(--spotlight-color, rgba(0,255,136,.25)),transparent 72%)}.card-spotlight:hover:after{opacity:1}.card-spotlight>*{position:relative;z-index:1}.shiny-text{display:inline-block;background:linear-gradient(110deg,var(--text2) 40%,#ffffff 50%,var(--text2) 60%);background-size:220% 100%;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:var(--text2);animation-name:shinySweep;animation-timing-function:linear;animation-iteration-count:infinite}@keyframes shinySweep{0%{background-position:220% 0}to{background-position:-120% 0}}.shiny-disabled{animation:none}html[data-theme=light] .shiny-text{background:linear-gradient(110deg,var(--text2) 40%,#000 50%,var(--text2) 60%);background-size:220% 100%;-webkit-background-clip:text;background-clip:text}@media (prefers-reduced-motion: reduce){.shiny-text{animation:none}.card-spotlight:after{transition:none}}.act-btn{display:inline-flex;align-items:center;justify-content:center;vertical-align:middle}.act-btn svg{display:block}.btn-icon{display:inline-flex;align-items:center;justify-content:center;gap:7px}.btn-icon svg{flex-shrink:0}.h2-icon,.h3-icon,.label-icon,.badge-inline,.auser{display:inline-flex;align-items:center;gap:7px}.badge-inline{gap:5px}.badge-inline svg,.label-icon svg{flex-shrink:0}.anav svg{flex-shrink:0;opacity:.9;transition:transform .15s}.anav:hover svg{transform:translate(1px)}.anav.active svg{opacity:1}.admin-search-wrap{position:relative;display:inline-flex;align-items:center;flex:1;min-width:220px}.admin-search-wrap .admin-search-icon{position:absolute;left:11px;color:#5a6678;pointer-events:none}.admin-search-wrap .admin-search{width:100%;padding-left:34px}.admin-stat{transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}.admin-stat:hover{transform:translateY(-3px);border-color:#f0a50066;box-shadow:0 12px 30px #0006,0 0 0 1px #f0a50014}.admin-card{transition:border-color .2s ease,box-shadow .2s ease}.admin-card:hover{box-shadow:0 10px 28px #00000052}.toggle-pill{display:inline-flex;align-items:center;gap:7px}.toggle-pill:before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor;box-shadow:0 0 6px currentColor}.toggle-pill.off:before{box-shadow:none;opacity:.5}.admin-table th.th-sortable{cursor:pointer;-webkit-user-select:none;user-select:none;transition:color .15s}.admin-table th.th-sortable:hover{color:var(--admin-amber, var(--amber))}.th-sort{display:inline-flex;align-items:center;gap:5px}.th-sort-idle{opacity:.35}.fb-player{display:inline-flex;align-items:center;gap:6px;font-weight:600}.fb-drop{color:#ff5c6c;flex-shrink:0}.hero h1{background:none;-webkit-text-fill-color:var(--text);color:var(--text)}.hero h1 .hero-line{display:block}.hero h1 .hero-line:nth-child(2){color:var(--green);-webkit-text-fill-color:var(--green);text-shadow:0 0 40px rgba(0,255,136,.35)}html[data-theme=light] .hero h1{background:none;-webkit-text-fill-color:#0d1117;color:#0d1117}html[data-theme=light] .hero h1 .hero-line:nth-child(2){-webkit-text-fill-color:#00b368;color:#00b368}.home-hero-badge{margin-bottom:18px}.chall-card.card-spotlight>*{position:relative;z-index:1}.chall-card .solved-banner{position:absolute;z-index:3}.first-blood{display:inline-flex;align-items:center;gap:5px}.landing-stats{position:relative;z-index:1;max-width:980px;margin:10px auto 30px;padding:0 24px;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.lstat{text-align:center;padding:28px 18px;border-radius:var(--radius-lg);background:color-mix(in srgb,var(--bg2) 70%,transparent);border:1px solid var(--border);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}.lstat:hover{transform:translateY(-4px);border-color:var(--green);box-shadow:0 14px 40px #0006,0 0 0 1px #00ff881f}.lstat-n{display:block;font-family:var(--mono);font-weight:800;line-height:1;font-size:clamp(32px,5.2vw,52px);color:var(--green);text-shadow:0 0 32px rgba(0,255,136,.45)}.lstat-l{display:block;margin-top:12px;font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--text2)}@media (max-width: 640px){.landing-stats{grid-template-columns:1fr;gap:12px}}.discord-code-box{display:flex;flex-direction:column;gap:6px;margin:10px 0 14px}.discord-code{font-family:var(--mono);font-size:16px;font-weight:700;color:var(--green);background:var(--bg3);border:1px solid var(--border2);border-radius:8px;padding:10px 14px;letter-spacing:.04em;-webkit-user-select:all;user-select:all}.toast-host{position:fixed;top:18px;right:18px;z-index:10000;display:flex;flex-direction:column;gap:10px;pointer-events:none}.toast{display:flex;align-items:center;gap:10px;min-width:240px;max-width:380px;background:var(--bg2, #161b22);color:var(--text, #e6edf3);border:1px solid var(--border2, #30363d);border-left-width:3px;border-radius:10px;padding:12px 15px;font-size:13.5px;box-shadow:0 12px 34px #00000073;animation:toastIn .25s ease both}.toast svg{flex-shrink:0}.toast-success{border-left-color:var(--green, #00FF88)}.toast-success svg{color:var(--green, #00FF88)}.toast-error{border-left-color:#ff5c6c}.toast-error svg{color:#ff5c6c}.toast-info{border-left-color:var(--blue, #4d9fff)}.toast-info svg{color:var(--blue, #4d9fff)}@keyframes toastIn{0%{opacity:0;transform:translate(30px)}to{opacity:1;transform:translate(0)}}.confirm-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:10001;background:#0000009e;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);display:flex;align-items:center;justify-content:center;padding:20px;animation:fadeIn .15s ease both}.confirm-box{width:100%;max-width:420px;text-align:center;background:var(--bg2, #161b22);border:1px solid var(--border2, #30363d);border-radius:16px;padding:28px 26px;box-shadow:0 30px 80px #0009;animation:fadeUp .22s ease both}.confirm-icon{width:52px;height:52px;margin:0 auto 14px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:#4d9fff1f;color:var(--blue, #4d9fff)}.confirm-danger .confirm-icon{background:#ff5c6c1f;color:#ff5c6c}.confirm-title{font-size:18px;font-weight:700;margin-bottom:8px}.confirm-message{font-size:14px;color:var(--text2, #8b949e);line-height:1.55;margin-bottom:22px}.confirm-actions{display:flex;gap:10px;justify-content:center}.confirm-actions button{min-width:110px}.loading-spinner-wrap{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:48px 0;color:var(--text2)}.loading-spinner{border-radius:50%;border:3px solid var(--border2);border-top-color:var(--green);animation:spin .7s linear infinite}.loading-spinner-text{font-family:var(--mono);font-size:13px;letter-spacing:.04em;color:var(--text3)}@keyframes spin{to{transform:rotate(360deg)}}.lb-medal{vertical-align:-4px}.lb-medal-1{color:gold;filter:drop-shadow(0 0 5px rgba(255,215,0,.4))}.lb-medal-2{color:silver;filter:drop-shadow(0 0 5px rgba(192,192,192,.35))}.lb-medal-3{color:#cd7f32;filter:drop-shadow(0 0 5px rgba(205,127,50,.35))}.verify-banner-msg,.pbadge,.chall-solves,.hint-text,.hint-locked,.theme-choice-label,.coming-soon-badge,.verify-inline-btn,.file-item,.twofa-note{display:inline-flex;align-items:center;gap:6px}.hint-text{align-items:flex-start}.hint-text svg,.hint-locked svg,.pbadge svg,.chall-solves svg,.verify-banner-msg svg,.theme-choice-label svg,.coming-soon-badge svg,.verify-inline-btn svg,.file-item svg,.twofa-note svg{flex-shrink:0}.twofa-note{display:flex}.modal-close,.avatar-edit{display:inline-flex;align-items:center;justify-content:center}.scroll-reveal{will-change:transform}.scroll-reveal .sr-word{backface-visibility:hidden}@media (prefers-reduced-motion: reduce){.scroll-reveal{transform:none!important}.scroll-reveal .sr-word{opacity:1!important;filter:none!important}}