@charset "UTF-8";
/* Local concept, inspired by the published Codefighters glass-panel campaign. */
:root{--night:#060e14;--ink:#eef9fa;--paper:#09141c;--muted:#adbec7;--line:#293c46;--blue:#85eeed;--green:#8bd9bb;--red:#ad3a31;--max:1280px;color-scheme:dark}
body{background:radial-gradient(ellipse at 80% 40%,#143a422e,transparent 45%),var(--paper)}
.skip{color:#173442}
.hero h1{text-transform:uppercase;font-weight:800}
.preview-bar{background:#12222c;color:#a8bdc6;border-bottom:1px solid #263b44;font-size:10px}
.site-header{background:#08131beF;border-bottom:1px solid #62989c2e;min-height:88px}
.brand small{color:#83d8d9}.desktop-nav a.active{box-shadow:0 2px #82e6e1}.account-link{border-color:#47757a70;background:linear-gradient(140deg,#98ecef0a,#98ecef02)}.account-dot{box-shadow:0 0 12px #a6f8ef88}.brand-mark{background:#f4f6f5}
.eyebrow:before{background:#83e4e0;box-shadow:0 0 10px #74e5e74a}.eyebrow.light{color:#abdedf}.eyebrow.light:before{background:#90eded}.eyebrow{color:#b4d8d9;font-size:10px;letter-spacing:2.2px}
.btn{border-radius:5px;min-height:52px}.btn.light,.btn.dark{background:#9ce9e4;color:#082329;border-color:#b4ffff66;box-shadow:inset 0 1px #e7ffff80,0 4px 22px #56dcdd0a}.btn.light:hover,.btn.dark:hover{background:#c4fff7}.btn.primary{background:#a4342c;color:white}.btn.primary:hover{background:#c24438}.btn.secondary{border-color:#647c8666;color:inherit;background:#abcdef04}.btn.ghost-light{background:#0b1c2770;border-color:#85c6cd55}.btn.ghost-light:hover{background:#17363c}.text-link{color:#abeae8}.btn:focus-visible,a:focus-visible,button:focus-visible,summary:focus-visible{outline-color:#8afaf0}
.hero{background:#050f16}.hero-art{inset:0;width:100%;height:100%;object-position:center;opacity:.7;max-width:none}.hero:after{background:linear-gradient(90deg,#050c13c4 0%,#050c1390 37%,#050c1320 80%),linear-gradient(0deg,#07121b 0%,transparent 25%)}
.hero-layout{display:grid;grid-template-columns:1fr 1fr;gap:68px;align-items:center;padding-top:66px;padding-bottom:86px;min-height:674px}.hero-copy{width:auto;max-width:none}.hero h1{font-family:'Segoe UI',Arial,sans-serif;font-size:clamp(42px,4.1vw,63px);font-weight:750;line-height:1.07;letter-spacing:-2.3px;margin:27px 0 25px}.hero h1 em{color:#92ece8;text-shadow:0 0 32px #78f8ff20}.hero-copy>p{color:#bed0d8;font-size:16px;line-height:1.8;max-width:465px;margin-bottom:29px}.hero .actions{gap:11px;flex-wrap:nowrap}.hero .actions .btn{padding:15px 18px;font-size:13px;gap:16px}.hero-try{display:inline-flex;gap:16px;align-items:center;margin-top:23px;color:#cce2e5;font-size:13px;padding:5px 0;border-bottom:1px solid #78949966}.hero-try:hover{color:white}
.glass-stage{position:relative;perspective:1500px;padding:8px 11px 30px;isolation:isolate}.glass-panel{position:relative;border:1px solid #83eff078;border-radius:15px;background:linear-gradient(120deg,#a1fcff12,#09202d9a 38%,#0b172b88);box-shadow:inset 2px 1px 1px #bdffff95,inset -1px -1px 1px #7ff2e862,0 0 18px #44cfde18,0 24px 45px #0009;backdrop-filter:blur(13px);-webkit-backdrop-filter:blur(13px);padding:26px 30px 20px;transform:rotateY(-8deg) rotateX(2deg);transition:transform .6s ease,border-color .6s ease}.glass-panel:before{content:'';position:absolute;inset:8px;border:1px solid #73d7e021;border-radius:8px;pointer-events:none}.glass-panel:hover,.glass-panel:focus-within{transform:rotateY(0) rotateX(0);border-color:#b7fffaaa}.glass-panel:after{content:'';position:absolute;inset:0;border-radius:inherit;background:linear-gradient(115deg,transparent 48%,#d8ffff06 48.5%,#ffffff01 65%,transparent 66%);pointer-events:none}.panel-top{display:flex;gap:12px;justify-content:space-between;align-items:center;padding-bottom:20px;border-bottom:1px solid #8fdae02b}.panel-logo{display:flex;align-items:center;gap:10px;font-size:9px;font-weight:650;letter-spacing:1.5px;color:#c1e7e7}.panel-logo svg{width:27px;height:27px;color:#89f1ec;flex-shrink:0}.panel-status{font-size:8px;letter-spacing:1.3px;color:#93bfc6;max-width:98px;text-align:right;line-height:1.7}.panel-kicker{font-size:11px;color:#a9c9d3;line-height:1.6;margin:24px 0 8px}.glass-panel h2{font-size:clamp(26px,2.5vw,35px);font-weight:750;letter-spacing:-1px;line-height:1.12;margin:0 0 25px}.glass-panel h2 em{color:#96e9e8;font-style:normal}.panel-message{padding:16px 18px;background:#c0f5fc0d;border:1px solid #a4e8f334;border-radius:7px}.panel-sender{display:flex;align-items:center;gap:10px}.panel-sender .avatar{width:29px;height:29px;font-size:10px;background:#70c4d02b;color:#d5f3f4;border:1px solid #99e3e03b}.panel-sender strong{display:block;font-size:12px;font-weight:600}.panel-sender small{font-size:9px;color:#a1c1cb}.message-time{margin-left:auto;font-size:10px;color:#9fbfc7}.panel-message>p{font-size:15px;line-height:1.6;margin:13px 0 2px;color:#eff9ff}.panel-rule{display:flex;gap:13px;align-items:center;margin:19px 0;color:#b5ccd1}.panel-rule>span{height:29px;width:29px;border:1px solid #99d3d457;border-radius:50%;display:grid;place-items:center;font-size:14px;color:#b7f4ec;flex-shrink:0}.panel-rule p{font-size:12px;line-height:1.6;margin:0}.panel-action{display:flex;align-items:center;justify-content:space-between;padding:14px 0;font-weight:650;font-size:13px;color:#9df9ee;border-top:1px solid #97d3e041}.panel-action span{font-size:21px}.panel-footer{padding-top:12px;display:flex;justify-content:space-between;color:#88acb6;font-size:7px;letter-spacing:1.6px}.glass-base{position:absolute;bottom:2px;left:11%;right:3%;height:20px;background:#7dffff22;filter:blur(18px);transform:skewX(-22deg);z-index:-1}
.trust-strip{background:#0c1b23;border-block:1px solid #74d7e320}.trust-strip .shell{padding-top:20px;padding-bottom:20px}.trust-strip i{color:#9ae9e4}.trust-strip span{color:#b4cdd3;font-size:11px}
.quick-game{display:flex;align-items:center;gap:17px;margin-top:28px;margin-bottom:-23px;padding:17px 23px;border:1px solid #496a7655;border-radius:8px;background:linear-gradient(105deg,#17313b70,#0d1a23);max-width:1220px}.quick-game-icon{display:grid;place-items:center;width:45px;height:45px;background:#75d6d611;border:1px solid #75d6d638;border-radius:7px;color:#87deda}.quick-game-icon svg{width:26px;height:26px}.quick-game>div{display:flex;align-items:center;gap:19px;flex:1}.quick-game strong{font-size:14px;font-weight:650}.quick-game>div>span{font-size:12px;color:#a8c1ca}.quick-game .text-link{background:none;border:0;font-size:12px;padding:8px 0;white-space:nowrap}
.section h2,.section h1{font-size:clamp(30px,3vw,41px);line-height:1.16;letter-spacing:-1.4px;font-weight:650;margin:15px 0 0}.section-heading>p{color:#acc1ca}.topic-tabs button{color:#bdcfd7;border-color:#44616d88}.topic-tabs button[aria-pressed=true]{background:#b1f4ec;color:#10282e;border-color:#b1f4ec}.topic-tabs button:hover{border-color:#93d6d1}.course-card{border-color:#5b85945c;background:linear-gradient(140deg,#1b354141,#101e29);box-shadow:inset 0 1px #e2faff08;border-radius:11px}.course-card:hover{box-shadow:0 10px 40px #0004,0 0 20px #5ddfc609;border-color:#9beade80}.course-thumb{height:204px;background:radial-gradient(ellipse at 85% 20%,#28526399,transparent 62%),linear-gradient(120deg,#10242b,#0b1a27);border-bottom:1px solid #8ce5e533}.course-thumb:before{content:'';position:absolute;inset:19px;border:1px solid #75bbce33;border-radius:8px;box-shadow:inset 1px 1px #b6ffff28;transform:perspective(600px) rotateY(-14deg);background:linear-gradient(135deg,#90eee717,transparent);pointer-events:none}.course-thumb:after{display:none}.course-glyph{position:absolute;left:36px;top:35px;width:56px;height:56px;display:grid;place-items:center;color:#a0fff2;filter:drop-shadow(0 0 9px #62eaf433)}.course-glyph svg{width:48px;height:48px}.course-signal{position:absolute;left:35px;right:30px;top:105px;font-size:13px;line-height:1.5;color:#b9e0e3;max-width:230px}.thumb-label{left:35px;bottom:23px;font-size:8px;letter-spacing:1.2px;color:#90b7c1}.course-thumb .symbol{right:31px;top:32px;color:#9ed5d6;font-size:20px}.course-card h3{font-size:21px;color:#edf6fa}.course-card-body>p{color:#a9bec9}.course-card-bottom{border-color:#41606b50}.course-card-bottom a{color:#aee9e3}.course-card-bottom small,.catalog-foot p{color:#96b0be}.course-card-bottom strong{font-weight:600;color:#eef8fa}
.learning-teaser{background:linear-gradient(125deg,#10232d,#0c1a24);border-block:1px solid #314f5b80}.mini-steps span{background:#1b323e;color:#b7d9dd;border:1px solid #54767d55}.conversation-card{background:linear-gradient(140deg,#244753b8,#132431);border:1px solid #85d2d680;box-shadow:inset 1px 1px #aaf5f23d,0 24px 55px #0004}.conversation-card:before{border-color:#62a8b84a}.chat-person{border-bottom-color:#50727d55}.avatar{color:#c5ede9;background:#315764}.chat-person small{color:#adc4cd}.bubble{background:#25424f;color:#e7f6fa}.bubble.sent{background:#315b5f;color:#e0fff6}.conversation-card .chat-caption{color:#b2d2d1}.game-section{background:#07121c}.game-preview{border-color:#65bbc077;box-shadow:0 0 25px #60d6da13,0 20px 60px #0007}.company-line{border-bottom:1px solid #31505a}.site-footer{background:#08151e;color:#aec3cc}.site-footer .brand{color:#effafa}.site-footer .brand small{color:#8fc4ca}
.course-hero{background:linear-gradient(120deg,#071219,#102530)}.course-title h1{font-weight:700}.course-visual{border-color:#74d9df85;box-shadow:inset 1px 1px #a5f8e8,0 15px 45px #0005;transform:perspective(1000px) rotateY(-4deg);background:#112331}.course-visual>img{object-position:75% center;opacity:.55}.visual-glyph{position:absolute;top:35px;right:30px;width:104px;height:104px;color:#86f3e866;filter:drop-shadow(0 0 12px #95ffff55);z-index:-1}.visual-glyph svg{width:100%;height:100%}.floating-message{background:#0e2b3ac9;border-color:#8aceca88;color:#e2f8f9;backdrop-filter:blur(8px);box-shadow:0 12px 20px #0004}.floating-message small{color:#a2d7d8}.price-card{background:linear-gradient(140deg,#1a3441,#122431);border-color:#75b2b655;box-shadow:inset 0 1px #abffff2b}.price-card ul{color:#b4ced7}.price-card .subnote{color:#a9c0cb}.course-extra{background:#18303a}.syllabus summary span{color:#93bbc6}.course-body h2{font-weight:650}.outcomes li:before{color:#98ead5}
.continue-card{background:linear-gradient(125deg,#13313e,#0d1924);border:1px solid #75e1e35c;box-shadow:inset 1px 1px #c6ffff24}.continue-art img{object-position:70% center;opacity:.7}.dash-panel{background:#10232e;border-color:#5c899d55}.skill-row{border-color:#365465}.skill-row>span{color:#93e0be}.business-hero .hero-copy{max-width:660px}.business-hero .hero-layout{grid-template-columns:1.3fr 1fr}.business-hero h1{font-size:clamp(43px,5vw,67px)}.business-hero .hero-art{object-position:70% center;opacity:.8}.business-benefits>div{border-top:1px solid #5e9caa66;margin-top:30px}
/* Lessons remain calm, solid and high-contrast; no atmospheric effect behind reading. */
body.in-lesson{--ink:#18303e;--paper:#f0f5f5;--muted:#526b77;--line:#c7d8dc;background:var(--paper);color:var(--ink);color-scheme:light}.in-lesson .eyebrow{color:#39636b}.in-lesson .eyebrow:before{background:#388878;box-shadow:none}.in-lesson .scene-chat .chat-person{background:#e7f1f2}.in-lesson .scene-chat .bubble{background:#eaf1f4;color:#193644}.in-lesson .chat-person small{color:#55727e}.in-lesson .avatar{background:#cbdfe3;color:#264d58}.in-lesson .lesson-aside li.current .step-circle{background:#24575d;border-color:#24575d}.in-lesson .btn.dark{background:#174953;color:#f1fffc;border-color:#174953}.in-lesson .btn.secondary{border-color:#a4b8bf}.in-lesson .hint{color:#456673}.in-lesson .text-link{color:#18525a}.in-lesson .eyebrow.light{color:#aadadb}.in-lesson .lesson-aside li{font-size:12px}
dialog{--ink:#18303e;--muted:#526b77;--line:#c7d8dc;color:#18303e;background:#f2f7f7;color-scheme:light}dialog .eyebrow{color:#356068}dialog .btn.dark{background:#184e57;color:white}dialog .btn.secondary{border-color:#90aab7}dialog::backdrop{background:#031017c9}
@media(min-width:1440px){.hero-art{right:auto;left:0;width:100%;max-width:none}.hero-layout{min-height:690px}.quick-game{padding:20px 24px;max-width:var(--max)}}
@media(max-width:1100px){.hero-layout{gap:30px;padding-top:50px;padding-bottom:55px}.hero h1{font-size:47px;letter-spacing:-1.8px}.hero .actions{flex-wrap:wrap}.glass-panel{padding:24px}.panel-status{display:none}.hero-copy>p{font-size:15px}.quick-game{margin-left:30px;margin-right:30px}.course-thumb{height:220px}.course-signal{max-width:265px;top:110px}.glass-panel h2{font-size:29px}}
@media(max-width:760px){.site-header{min-height:76px}.hero-art{top:0;bottom:auto;width:100%;height:100%;object-position:64% center;opacity:.65}.hero:after{background:linear-gradient(180deg,#06111bcc,#06111b55 55%,#09141c 100%)}.hero-layout{display:block;min-height:0;padding-top:40px;padding-bottom:42px}.hero-copy{max-width:540px;width:100%}.hero h1{font-size:clamp(35px,7.5vw,53px);letter-spacing:-1.7px;margin:22px 0;line-height:1.1}.hero-copy>p{font-size:14px;max-width:485px;margin-bottom:25px}.hero .actions{flex-wrap:wrap;gap:10px}.hero .actions .btn{font-size:12px;gap:10px;padding:14px 16px;min-height:48px}.hero-try{font-size:12px;margin-top:18px}.glass-stage{max-width:520px;margin:35px auto 0;padding:0 3px 24px}.glass-panel{transform:none;padding:23px 24px 19px;background:linear-gradient(120deg,#659ca92b,#071d2ade 90%);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.glass-panel h2{font-size:29px}.panel-status{display:block;font-size:7px;max-width:80px}.panel-kicker{font-size:11px;margin-top:22px}.panel-logo{font-size:8px;letter-spacing:1.2px}.panel-top{padding-bottom:17px}.panel-message{padding:15px}.panel-message>p{font-size:14px}.panel-rule{margin:17px 0}.panel-rule p{font-size:12px}.panel-action{font-size:13px;min-height:48px}.panel-footer{font-size:7px;letter-spacing:1px}.trust-strip .shell{padding-block:19px}.trust-strip span{font-size:10px}.quick-game{margin:22px 23px -9px;padding:16px;gap:12px}.quick-game>div{display:block}.quick-game>div>span{display:block;line-height:1.6;font-size:10px;margin-top:4px}.quick-game strong{font-size:13px}.quick-game .text-link{font-size:11px;gap:6px}.quick-game-icon{display:none}.section h2,.section h1{font-size:32px}.course-thumb{height:211px}.course-signal{font-size:12px;right:27px;top:99px}.course-glyph{top:30px}.conversation-card{transform:none}.course-visual{transform:none}.business-hero .hero-layout{min-height:0;padding-block:48px}.business-hero h1{font-size:45px}.business-hero .hero-art{object-position:70% center}.business-hero .hero-copy{max-width:490px}.business-hero .hero-copy>p{margin-bottom:30px}.in-lesson .lesson-aside ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 17px}.in-lesson .lesson-aside li{font-size:11px;flex-direction:row;align-items:center;line-height:1.4}.in-lesson .step-circle{width:25px;height:25px}.in-lesson .lesson-grid{gap:24px}}
@media(max-width:410px){.hero h1{font-size:36px}.hero-copy>p{font-size:14px}.hero .actions .btn{font-size:12px;padding-inline:13px;gap:9px}.glass-panel{padding:23px 20px 17px}.glass-panel h2{font-size:27px}.panel-logo svg{width:23px;height:23px}.panel-logo{font-size:7px;letter-spacing:1px}.panel-top{gap:5px}.panel-status{font-size:6px;max-width:70px}.panel-message>p{font-size:13px}.section h2,.section h1{font-size:30px}.course-thumb{height:212px}.course-signal{font-size:14px;max-width:245px}.course-glyph{top:29px}.course-signal{top:99px}.thumb-label{font-size:8px}.quick-game{margin-left:23px;margin-right:23px;gap:9px}.quick-game .text-link{white-space:normal;max-width:68px;text-align:left}.hero-copy .eyebrow{font-size:9px;letter-spacing:1.6px}}
@media(max-width:350px){.hero h1{font-size:32px;letter-spacing:-1.4px}.hero .actions .btn{width:100%;justify-content:space-between}.glass-panel h2{font-size:23px}.panel-status{display:none}.panel-kicker{font-size:10px}.panel-rule p{font-size:11px}.panel-footer{font-size:6px}.preview-bar{font-size:8px}.in-lesson .lesson-aside li{font-size:10px}.quick-game{padding:13px}.quick-game>div>span{font-size:9px}.business-hero h1{font-size:38px}}
@media(prefers-reduced-motion:reduce){.glass-panel{transform:none}.glass-panel:hover,.glass-panel:focus-within{transform:none}}
.in-lesson :is(button,a,input,summary):focus-visible,dialog :is(button,a,input,summary):focus-visible{outline-color:#146c75}
.in-lesson .lesson-aside li,.in-lesson .lesson-aside>p,.in-lesson .scene-chat>.scene-time,.in-lesson .lesson-topline span{color:#526977}
.glass-panel{border-color:#86f6ecb3;background:linear-gradient(120deg,#a1fcff10,#09202d72 38%,#0b172b88);box-shadow:inset 2px 1px 1px #c1ffffb3,inset -1px -1px 1px #7ff2e899,0 0 20px #44cfde25,0 24px 45px #0009;backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px)}
@media(max-width:600px){.course-grid{grid-template-columns:1fr}.course-signal{font-size:14px;max-width:280px}}
/* Topic-specific cinematic covers. Labels live below the artwork. */
.course-thumb{display:block;height:auto;aspect-ratio:3/2;isolation:isolate;background:#102029;border-bottom:1px solid #72b8c040}
.course-thumb:before,.course-thumb:after{display:none}
.course-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;transform:scale(1);filter:none;transition:transform .45s ease}
.course-card:hover .course-thumb img{transform:scale(1.045)}
.course-card:focus-within{border-color:#99e7dfaa}
.course-category{color:#a2cbcf;font-size:9px;letter-spacing:1.6px;line-height:1.6;margin:0 0 11px}
.course-card-body{padding-top:20px}
@media(prefers-reduced-motion:reduce){.course-card:hover .course-thumb img{transform:none}}