:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;color:#eef7f3;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;--font-sans:"Avenir Next", "Segoe UI Variable", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;--font-mono:"SFMono-Regular", "Cascadia Code", "Roboto Mono", Consolas, monospace;--bg:#07111d;--bg-soft:#091722;--surface:#0d1c29;--surface-2:#112331;--surface-3:#152a37;--surface-glass:#0a1823d1;--text:#eef7f3;--text-soft:#c8d8d4;--muted:#96aaa9;--subtle:#6b8083;--line:#add6ca24;--line-strong:#91e7c247;--accent:#8df4b4;--accent-strong:#b7ff7c;--accent-rgb:141, 244, 180;--cyan:#65dff0;--violet:#aa93ff;--primary-bg:#8df4b4;--primary-hover:#b5ffd0;--primary-text:#06140e;--danger:#ffaaa3;--warning:#f7ca87;--success:#8df4b4;--shadow:0 28px 80px #0000004d;--shadow-soft:0 16px 42px #0000002e;--radius-sm:8px;--radius:14px;--radius-lg:24px;--header:#07111dd1;background:#07111d;font-family:Avenir Next,Segoe UI Variable,Segoe UI,system-ui,-apple-system,BlinkMacSystemFont,sans-serif}:root[data-theme=light]{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;color:#102029;--bg:#f4f7f4;--bg-soft:#ecf2ee;--surface:#fff;--surface-2:#f7faf8;--surface-3:#e7f0eb;--surface-glass:#f9fcfae0;--text:#102029;--text-soft:#30474b;--muted:#596e70;--subtle:#758789;--line:#173f3921;--line-strong:#08795647;--accent:#087b58;--accent-strong:#075f47;--accent-rgb:8, 123, 88;--cyan:#087d93;--violet:#6652b8;--primary-bg:#087b58;--primary-hover:#066647;--primary-text:#fff;--danger:#a43f39;--warning:#88550a;--success:#087b58;--shadow:0 28px 80px #16332c1f;--shadow-soft:0 14px 36px #16332c17;--header:#f8fbf9e0;background:#f4f7f4}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:96px}body{background:var(--bg);min-width:320px;min-height:100vh;color:var(--text);margin:0}body,button,input,textarea{font-family:var(--font-sans)}button,input,textarea{font:inherit}button{cursor:pointer}a{color:inherit}img,svg{display:block}img{max-width:100%}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:3px}::selection{background:var(--accent);color:var(--primary-text)}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--text);letter-spacing:-.045em;text-wrap:balance}p{line-height:1.65}.site-shell{background:radial-gradient(circle at 82% 0%, rgba(var(--accent-rgb), .06), transparent 28rem), var(--bg);flex-direction:column;min-height:100vh;display:flex;overflow:clip}.site-shell>#main{outline:none;flex:1}.container{width:min(1240px,100% - 64px);margin-inline:auto}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.skip-link{z-index:1000;border-radius:var(--radius-sm);background:var(--primary-bg);color:var(--primary-text);padding:11px 16px;font-weight:800;text-decoration:none;position:fixed;top:-80px;left:18px}.skip-link:focus{top:18px}.eyebrow,.section-heading,.hero-kicker,.lesson-number,.lesson-level,.feature-top,.card-link,.composer-foot,.online-count,.status-label,.bubble-meta,.code-display,.waiting-status,.private-tools,.lesson-side-link span,.rule span:first-child,.private-step>span,.image-label,.privacy-number,.footer-about>span,.chat-preview-head,.journey-time,.lesson-category,.lesson-sidebar-category,.character-count,.preview-timer,.private-code-meta,.code-expiry,.private-message-time{font-family:var(--font-mono)}.site-header{z-index:50;border-bottom:1px solid var(--line);background:var(--header);-webkit-backdrop-filter:blur(18px)saturate(130%);position:sticky;top:0}.header-inner{align-items:center;gap:28px;min-height:76px;display:flex}.brand{color:var(--text);flex:none;text-decoration:none}.brand-lockup{align-items:center;gap:12px;display:inline-flex}.brand-symbol{filter:drop-shadow(0 7px 16px #38e6aa1f);width:40px;height:40px}.brand-word{letter-spacing:-.075em;font-size:22px;font-weight:850;line-height:1}.brand-word>span{color:var(--accent)}.main-nav{align-items:center;gap:2px;min-height:76px;margin-left:auto;display:flex}.nav-link{min-height:76px;color:var(--muted);white-space:nowrap;align-items:center;padding:2px 15px 0;font-size:13px;font-weight:750;text-decoration:none;display:inline-flex;position:relative}.nav-link:after{content:"";background:var(--accent);border-radius:2px 2px 0 0;height:2px;transition:transform .2s;position:absolute;bottom:-1px;left:15px;right:15px;transform:scaleX(0)}.nav-link:hover,.nav-link.active{color:var(--text)}.nav-link.active:after{transform:scaleX(1)}.nav-cta{margin-left:12px;min-height:41px!important;padding-inline:16px!important;font-size:12px!important}.header-tools{align-items:center;gap:7px;display:flex}.theme-toggle,.menu-toggle{border:1px solid var(--line);background:var(--surface-glass);width:40px;height:40px;color:var(--text-soft);border-radius:10px;place-items:center;padding:0;transition:color .18s,border-color .18s,background .18s;display:grid}.theme-toggle:hover,.menu-toggle:hover{color:var(--accent);border-color:var(--line-strong);background:var(--surface-2)}.menu-toggle{display:none}.button{white-space:nowrap;border:1px solid #0000;border-radius:10px;justify-content:center;align-items:center;gap:13px;min-height:48px;padding:0 20px;font-size:13px;font-weight:800;line-height:1;text-decoration:none;transition:transform .18s,border-color .18s,background .18s,box-shadow .18s;display:inline-flex}.button:hover:not(:disabled){transform:translateY(-2px)}.button:disabled{opacity:.5;cursor:not-allowed}.button.primary{background:var(--primary-bg);border-color:var(--primary-bg);color:var(--primary-text);box-shadow:0 10px 28px rgba(var(--accent-rgb), .13)}.button.primary:hover:not(:disabled){background:var(--primary-hover);border-color:var(--primary-hover);box-shadow:0 14px 34px rgba(var(--accent-rgb), .2)}.button.secondary{color:var(--text);border-color:var(--line-strong);background:var(--surface-glass)}.button.secondary:hover:not(:disabled),.button.ghost:hover:not(:disabled){border-color:var(--accent);background:rgba(var(--accent-rgb), .07)}.button.ghost{color:var(--text-soft);border-color:var(--line);background:0 0}.button.light{color:#0a2b20;background:#f3fff8;border-color:#f3fff8}.button.light:hover:not(:disabled){background:#dfffee;border-color:#dfffee}.button.danger{color:var(--danger);background:#ff766c1a;border-color:#ff766c57}.button.small{border-radius:8px;min-height:37px;padding-inline:13px;font-size:11px}.button.text-button{color:var(--muted);background:0 0}.text-link{color:var(--accent);align-items:center;gap:10px;font-size:13px;font-weight:800;text-decoration:none;display:inline-flex}.text-link svg,.card-link svg{transition:transform .18s}.text-link:hover svg,a:hover .card-link svg{transform:translate(4px)}.hero{isolation:isolate;color:#effaf6;background:#06131c;min-height:730px;position:relative;overflow:hidden}.hero:after{content:"";z-index:-1;background:linear-gradient(90deg,#051019fa 0%,#051019e6 34%,#05101959 64%,#0510191f 100%),linear-gradient(#0000 68%,#051019d9);position:absolute;inset:0}.hero-media{z-index:-2;position:absolute;inset:0}.hero-media img{object-fit:cover;object-position:center;width:100%;height:100%}.hero-inner{grid-template-rows:1fr auto;grid-template-columns:minmax(0,.92fr) minmax(380px,1.08fr);gap:36px 60px;min-height:730px;padding-top:82px;padding-bottom:32px;display:grid}.hero-content{z-index:2;align-self:center;max-width:675px;padding-block:38px;position:relative}.hero-kicker{color:#aaf8c7;letter-spacing:.16em;align-items:center;gap:11px;margin-bottom:25px;font-size:10px;font-weight:700;display:flex}.tiny-live{background:#a3ff88;border-radius:50%;width:7px;height:7px;box-shadow:0 0 0 5px #a3ff8817,0 0 16px #a3ff88b8}.hero h1{color:#f4fcf8;letter-spacing:-.078em;margin-bottom:26px;font-size:clamp(60px,6.2vw,92px);font-weight:780;line-height:.96}.hero h1 em{color:#a8fa9e;text-shadow:0 0 34px #8eff9e29;font-style:normal}.hero-lead{color:#b6c9c8;max-width:620px;margin-bottom:30px;font-size:clamp(16px,1.35vw,19px);line-height:1.65}.hero-actions{flex-wrap:wrap;gap:11px;display:flex}.hero .button.secondary{color:#edf8f4;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#0a1a23b3;border-color:#bfe7da40}.hero-note{color:#8fa9a7;align-items:center;gap:8px;margin:17px 0 0;font-size:11px;display:flex}.hero-note svg{color:#a8fa9e}.hero-visual{align-self:stretch;min-height:430px;position:relative}.visual-console{-webkit-backdrop-filter:blur(13px);backdrop-filter:blur(13px);background:#040f17c2;border:1px solid #aaf4cd33;border-radius:14px;width:min(390px,85%);position:absolute;bottom:44px;right:0;overflow:hidden;transform:perspective(800px)rotateY(-4deg)rotateX(2deg);box-shadow:0 30px 70px #00000057}.console-head{color:#769291;border-bottom:1px solid #aaf4cd1f;align-items:center;gap:6px;height:42px;padding:0 15px;display:flex}.console-head span{background:#35505a;border-radius:50%;width:7px;height:7px}.console-head span:nth-child(2){background:#50705f}.console-head span:nth-child(3){background:#87cf86}.console-head b{font:10px var(--font-mono);margin-left:7px;font-weight:500}.visual-console code{color:#d9e8e5;font:12px/1.9 var(--font-mono);padding:25px 22px 18px;display:block}.visual-console code span{color:#67dff0}.visual-console code em{color:#b5ff8a;font-style:normal}.console-status{color:#77928f;font:9px var(--font-mono);text-transform:uppercase;letter-spacing:.09em;align-items:center;gap:8px;margin:0 22px 19px;display:flex}.console-status i{background:#a7fb8c;border-radius:50%;width:6px;height:6px;box-shadow:0 0 9px #a7fb8c}.visual-pill{color:#d8ebe5;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);font:10px var(--font-mono);background:#06161fb8;border:1px solid #b4f4db33;border-radius:999px;align-items:center;gap:9px;padding:10px 13px;display:flex;position:absolute;box-shadow:0 12px 35px #00000038}.visual-pill svg{color:#9ef5ae}.pill-lessons{top:85px;right:25px}.pill-private{top:170px;left:8%}.hero-proof{border-top:1px solid #c4ebdd2b;grid-column:1/-1;grid-template-columns:repeat(3,1fr);display:grid}.hero-proof>span{color:#91aaa7;align-items:center;gap:12px;padding:22px 0 4px;font-size:11px;display:flex}.hero-proof>span+span{border-left:1px solid #c4ebdd21;padding-left:28px}.hero-proof b{color:#9df3af;font:10px var(--font-mono)}.home-section{padding-block:120px}.section-heading{border-top:1px solid var(--line);min-height:55px;color:var(--accent);letter-spacing:.13em;justify-content:space-between;align-items:center;gap:20px;font-size:10px;font-weight:750;display:flex}.section-heading p{color:var(--subtle);letter-spacing:.02em;margin:0;font-size:10px}.section-title-row{grid-template-columns:minmax(0,.95fr) minmax(320px,.65fr);align-items:end;gap:60px;margin:35px 0 45px;display:grid}.section-title-row .eyebrow,.learning-copy .eyebrow,.conversation-copy .eyebrow,.faq-heading-wrap .eyebrow,.builder-copy .eyebrow{color:var(--accent);font:10px var(--font-mono);letter-spacing:.13em;margin-bottom:14px;display:block}.section-title-row h2,.learning-copy h2,.conversation-copy h2,.faq-heading-wrap h2,.builder-copy h2{margin:0;font-size:clamp(39px,4.8vw,66px);line-height:1.03}.section-title-row>p{max-width:500px;color:var(--muted);margin:0;font-size:15px}.feature-grid{grid-template-columns:repeat(3,1fr);gap:14px;display:grid}.feature-card,.lesson-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);color:var(--text);text-align:left;box-shadow:var(--shadow-soft);text-decoration:none;transition:transform .22s,border-color .22s,background .22s,box-shadow .22s;position:relative;overflow:hidden}.feature-card:before{content:"";opacity:.8;background:linear-gradient(90deg, var(--accent), transparent 70%);height:3px;position:absolute;inset:0 0 auto}.feature-chat:before{background:linear-gradient(90deg, var(--cyan), transparent 70%)}.feature-private:before{background:linear-gradient(90deg, var(--violet), transparent 70%)}.feature-card{flex-direction:column;min-height:355px;padding:27px 28px 26px;display:flex}.feature-card:hover,.lesson-card:hover{z-index:1;border-color:var(--line-strong);background:var(--surface-2);box-shadow:var(--shadow);transform:translateY(-6px)}.feature-top{color:var(--muted);letter-spacing:.12em;justify-content:space-between;align-items:flex-start;gap:20px;font-size:10px;display:flex}.feature-icon{border:1px solid var(--line);background:rgba(var(--accent-rgb), .055);width:48px;height:48px;color:var(--accent);border-radius:12px;place-items:center;margin-top:-4px;display:grid}.feature-chat .feature-icon{color:var(--cyan)}.feature-private .feature-icon{color:var(--violet)}.feature-card h3{max-width:320px;margin:auto 0 14px;padding-top:62px;font-size:clamp(24px,2.15vw,31px);line-height:1.12}.feature-card p,.lesson-card p{color:var(--muted);margin-bottom:25px;font-size:13px;line-height:1.65}.card-link{color:var(--accent);letter-spacing:.05em;justify-content:space-between;align-items:center;gap:15px;margin-top:auto;font-size:10px;font-weight:750;display:flex}.feature-chat .card-link{color:var(--cyan)}.feature-private .card-link{color:var(--violet)}.learning-showcase{border-block:1px solid var(--line);background:var(--bg-soft);padding-block:110px}.learning-showcase-inner{grid-template-columns:minmax(360px,.85fr) minmax(0,1.15fr);align-items:start;gap:clamp(45px,7vw,100px);display:grid}.learning-visual{border:1px solid var(--line);border-radius:var(--radius-lg);min-height:630px;box-shadow:var(--shadow);background:#06141e;position:sticky;top:112px;overflow:hidden}.learning-visual:after{content:"";pointer-events:none;background:linear-gradient(#0000 55%,#041018ad);position:absolute;inset:0}.learning-visual img{object-fit:cover;object-position:center;width:100%;height:100%;min-height:630px}.image-label{z-index:1;color:#cce6dc;letter-spacing:.11em;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#05121bb3;border:1px solid #bbf0db33;border-radius:7px;padding:9px 11px;font-size:9px;position:absolute;bottom:20px;left:22px}.learning-copy{margin-bottom:34px}.learning-copy h2{margin-bottom:20px}.learning-copy p{max-width:620px;color:var(--muted);margin-bottom:0;font-size:15px}.journey-list{border-top:1px solid var(--line);margin:0 0 25px;padding:0;list-style:none}.journey-list li{border-bottom:1px solid var(--line)}.journey-link{min-height:95px;color:var(--text);grid-template-columns:38px minmax(0,1fr) auto 22px;align-items:center;gap:16px;text-decoration:none;transition:color .18s,padding .18s,background .18s;display:grid}.journey-link:hover{color:var(--accent);background:rgba(var(--accent-rgb), .045);padding-inline:12px}.journey-index{color:var(--accent);font:10px var(--font-mono)}.journey-main{flex-direction:column;gap:5px;min-width:0;display:flex}.journey-main strong{font-size:15px}.journey-main small{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;font-size:11px;line-height:1.45;overflow:hidden}.journey-time{color:var(--subtle);white-space:nowrap;font-size:9px}.journey-link>svg{color:var(--subtle);transition:transform .18s}.journey-link:hover>svg{color:var(--accent);transform:translate(4px)}.conversation-section{padding-block:115px}.conversation-grid{grid-template-columns:minmax(320px,.78fr) minmax(0,1.22fr);align-items:center;gap:clamp(45px,8vw,105px);padding-block:58px 70px;display:grid}.conversation-copy h2{margin-bottom:22px}.conversation-copy>p{max-width:530px;color:var(--muted);margin-bottom:28px;font-size:15px}.conversation-actions{flex-wrap:wrap;gap:10px;display:flex}.conversation-visuals{gap:14px;display:grid}.chat-preview{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);overflow:hidden}.chat-preview-head{border-bottom:1px solid var(--line);min-height:53px;color:var(--text-soft);letter-spacing:.08em;justify-content:space-between;align-items:center;gap:15px;padding:0 18px;font-size:9px;display:flex}.chat-preview-head>span{align-items:center;gap:8px;display:flex}.chat-preview-head i{background:var(--success);width:7px;height:7px;box-shadow:0 0 10px rgba(var(--accent-rgb), .45);border-radius:50%}.chat-preview-head b{color:var(--subtle);font-size:8px;font-weight:500}.preview-message{gap:12px;margin:20px 20px 0;display:flex}.preview-message.answer{margin-left:54px}.preview-avatar{border:1px solid var(--line-strong);background:rgba(var(--accent-rgb), .08);height:34px;color:var(--accent);font:10px var(--font-mono);border-radius:10px;flex:0 0 34px;place-items:center;display:grid}.preview-message small{color:var(--subtle);font:8px var(--font-mono)}.preview-message p{color:var(--text-soft);margin:4px 0 0;font-size:12px;line-height:1.5}.preview-composer{border:1px solid var(--line);background:var(--bg-soft);min-height:51px;color:var(--subtle);border-radius:9px;justify-content:space-between;align-items:center;margin:22px 18px 17px;padding:0 8px 0 14px;font-size:10px;display:flex}.preview-composer b{background:var(--primary-bg);width:35px;height:35px;color:var(--primary-text);border-radius:8px;place-items:center;font-size:17px;display:grid}.private-visual-card{border:1px solid var(--line);border-radius:var(--radius);min-height:165px;box-shadow:var(--shadow-soft);background:#06141d;position:relative;overflow:hidden}.private-visual-card:after{content:"";background:linear-gradient(90deg,#040f17e6,#040f170d);position:absolute;inset:0}.private-visual-card>img{object-fit:cover;object-position:center;width:100%;height:175px}.private-visual-card>div{z-index:1;color:#9ef5b0;align-items:center;gap:13px;display:flex;position:absolute;top:50%;left:22px;transform:translateY(-50%)}.private-visual-card>div>span{flex-direction:column;gap:4px;display:flex}.private-visual-card strong{color:#edf9f4;font-size:13px}.private-visual-card small{color:#93aaa8;font-size:9px}.trust-rail{border-block:1px solid var(--line);grid-template-columns:repeat(3,1fr);display:grid}.trust-rail>div{align-items:center;gap:15px;min-height:120px;padding-right:28px;display:flex}.trust-rail>div+div{border-left:1px solid var(--line);padding-left:28px}.trust-rail svg{color:var(--accent);flex:none}.trust-rail span{flex-direction:column;gap:5px;display:flex}.trust-rail strong{font-size:12px}.trust-rail small{color:var(--muted);font-size:10px;line-height:1.5}.builder-spotlight{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-soft);grid-template-columns:1.08fr .92fr;margin-bottom:120px;display:grid;overflow:hidden}.builder-image{background:#06141d;min-height:470px;overflow:hidden}.builder-image img{object-fit:cover;width:100%;height:100%}.builder-copy{align-self:center;padding:clamp(38px,5vw,72px)}.builder-copy h2{margin-bottom:20px;font-size:clamp(35px,4vw,53px)}.builder-copy>p{color:var(--muted);font-size:14px}.builder-copy ul{flex-wrap:wrap;gap:8px;margin:25px 0 29px;padding:0;list-style:none;display:flex}.builder-copy li{border:1px solid var(--line);color:var(--text-soft);background:var(--surface-2);border-radius:8px;align-items:center;gap:7px;padding:8px 10px;font-size:10px;display:flex}.builder-copy li svg{color:var(--accent)}.faq-section{grid-template-columns:minmax(260px,.55fr) minmax(0,1fr);gap:clamp(40px,8vw,110px);padding-bottom:120px;display:grid}.faq-heading-wrap h2{font-size:clamp(38px,4vw,56px)}.faq-list{border-top:1px solid var(--line)}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{min-height:82px;color:var(--text);cursor:pointer;justify-content:space-between;align-items:center;gap:24px;font-size:15px;font-weight:750;list-style:none;display:flex}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary span{border:1px solid var(--line);width:30px;height:30px;color:var(--accent);font:18px var(--font-mono);border-radius:50%;flex:none;place-items:center;transition:transform .18s;display:grid}.faq-list details[open] summary span{transform:rotate(45deg)}.faq-list details p{max-width:720px;color:var(--muted);padding:0 50px 25px 0;font-size:13px}.home-cta{color:#f1fff8;background:linear-gradient(125deg,#0b614a,#123f42 55%,#172653);border-top:1px solid #c8ffdf29}.home-cta-inner{justify-content:space-between;align-items:center;gap:45px;min-height:320px;display:flex}.home-cta .eyebrow{color:#b6ffd0;font:10px var(--font-mono);letter-spacing:.14em;margin-bottom:13px;display:block}.home-cta h2{color:#f4fff9;max-width:790px;margin-bottom:10px;font-size:clamp(38px,5vw,62px)}.home-cta p{color:#b5d5ce;margin:0;font-size:14px}.page-spacing{padding-top:82px;padding-bottom:110px}.page-intro{justify-content:space-between;align-items:center;gap:40px;margin-bottom:58px;display:flex}.page-intro.compact{margin-bottom:42px}.page-intro .eyebrow,.lesson-main .eyebrow{color:var(--accent);letter-spacing:.13em;font-size:10px}.page-intro h1,.lesson-main h1{margin:15px 0 16px;font-size:clamp(46px,5.3vw,76px);line-height:1.02}.lead{max-width:720px;color:var(--muted);margin-bottom:0;font-size:17px}.intro-mark{border:1px solid var(--line-strong);background:linear-gradient(145deg, rgba(var(--accent-rgb), .1), var(--surface));width:150px;height:135px;color:var(--accent);box-shadow:var(--shadow-soft);border-radius:24px;flex:none;place-items:center;display:grid;transform:rotate(-4deg)}.panel{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-soft)}.empty{text-align:center;padding:80px 30px}.empty .eyebrow{color:var(--accent);letter-spacing:.12em;font-size:10px}.empty h1{margin:15px 0 10px;font-size:44px}.empty p{color:var(--muted)}.lessons-grid{grid-template-columns:repeat(3,1fr);gap:14px;display:grid}.lesson-card{flex-direction:column;min-height:275px;padding:25px 26px;display:flex}.lesson-number{color:var(--accent);font-size:10px}.lesson-level{color:var(--subtle);margin-top:auto;padding-top:42px;font-size:9px}.lesson-card h2{margin:10px 0;font-size:25px;line-height:1.15}.lesson-card p{margin-bottom:25px}.learning-note{border:1px solid var(--line-strong);border-radius:var(--radius);background:linear-gradient(110deg, rgba(var(--accent-rgb), .075), var(--surface));align-items:center;gap:24px;margin-top:45px;padding:28px;display:flex}.note-icon{color:var(--accent);font-size:38px}.learning-note h2{margin:0 0 4px;font-size:21px}.learning-note p{color:var(--muted);margin:0;font-size:12px}.learning-note .button{margin-left:auto}.lesson-layout{grid-template-columns:minmax(0,1fr) 280px;gap:clamp(40px,7vw,90px);display:grid}.lesson-main{min-width:0;max-width:780px}.lesson-byline{color:var(--subtle);margin:-4px 0 22px;font-size:11px}.back-button{color:var(--muted);background:0 0;border:0;margin:0 0 40px;padding:0;font-size:12px}.back-button:hover{color:var(--accent)}.lesson-goal{border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:0 var(--radius-sm) var(--radius-sm) 0;background:rgba(var(--accent-rgb), .055);margin:34px 0 48px;padding:18px 22px}.lesson-visual{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-2);margin:30px 0 0;overflow:hidden}.lesson-visual img{aspect-ratio:16/9;object-fit:cover;width:100%;max-height:360px}.lesson-visual figcaption{color:var(--muted);padding:10px 16px;font-size:11px;line-height:1.5}.lesson-goal strong{color:var(--accent);font-size:12px}.lesson-goal p{color:var(--text-soft);margin:6px 0 0;font-size:14px}.lesson-section{margin-bottom:40px}.lesson-section h2,.exercise h2{margin-bottom:11px;font-size:28px}.lesson-section p,.exercise p{color:var(--text-soft);font-size:15px}pre{border:1px solid var(--line);color:#bff1b0;max-width:100%;font:12px/1.7 var(--font-mono);white-space:pre;background:#06101a;border-radius:10px;padding:22px;overflow:auto;box-shadow:inset 0 1px #ffffff08}.exercise{border:1px solid var(--line-strong);border-radius:var(--radius);background:linear-gradient(135deg, rgba(var(--accent-rgb), .08), var(--surface));margin:45px 0 25px;padding:26px}.exercise h2{margin-top:9px}.exercise p{margin-bottom:0}.lesson-actions{justify-content:space-between;gap:10px;display:flex}.lesson-sidebar{align-self:start;min-width:0;padding:22px;position:sticky;top:104px}.lesson-sidebar .eyebrow{color:var(--accent);letter-spacing:.1em;margin-bottom:17px;font-size:9px;display:block}.lesson-side-link{border:0;border-top:1px solid var(--line);width:100%;color:var(--muted);text-align:left;background:0 0;gap:12px;padding:13px 0;font-size:11px;line-height:1.45;text-decoration:none;display:flex}.lesson-side-link.active,.lesson-side-link:hover{color:var(--text)}.lesson-side-link span{color:var(--accent)}.learn-path{border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(125deg, rgba(var(--accent-rgb), .075), var(--surface));grid-template-columns:minmax(220px,.7fr) minmax(0,1.3fr);gap:30px;margin-bottom:45px;padding:28px;display:grid}.learn-path-visual{border:1px solid var(--line);background:#06141e;border-radius:12px;margin:0;overflow:hidden}.learn-path-visual img{object-fit:cover;width:100%;height:230px}.learn-path-visual figcaption{color:var(--muted);padding:10px 14px;font-size:10px;line-height:1.5}.learn-path-copy h2{margin:8px 0 10px;font-size:28px}.learn-path-copy p{color:var(--muted);margin:0;font-size:13px}.learn-path-steps{grid-column:1/-1;grid-template-columns:repeat(4,1fr);gap:8px;display:grid}.learn-path-step{border:1px solid var(--line);background:var(--surface-glass);border-radius:10px;min-height:115px;padding:14px}.learn-category-nav{flex-wrap:wrap;gap:8px;margin-bottom:45px;display:flex}.learn-category-link{border:1px solid var(--line);background:var(--surface);color:var(--text-soft);border-radius:999px;padding:9px 12px;font-size:11px;text-decoration:none}.learn-category-link:hover{border-color:var(--accent);color:var(--accent)}.learn-category{margin-top:62px;scroll-margin-top:110px}.learn-category-heading{border-bottom:1px solid var(--line);justify-content:space-between;align-items:end;gap:25px;margin-bottom:24px;padding-bottom:17px;display:flex}.learn-category-heading h2{margin:0;font-size:32px}.learn-category-heading p{max-width:560px;color:var(--muted);margin:0;font-size:12px}.lesson-category,.lesson-sidebar-category{color:var(--cyan);letter-spacing:.09em;font-size:9px}.lesson-steps{color:var(--text-soft);margin:18px 0 30px;padding-left:22px}.lesson-steps li{margin-bottom:12px;padding-left:8px;line-height:1.6}.lesson-notes-grid{grid-template-columns:repeat(2,1fr);gap:12px;margin:24px 0 34px;display:grid}.lesson-note-block{border:1px solid var(--line);background:var(--surface-2);border-radius:10px;padding:18px}.lesson-note-block.caution{background:#f7ca870f;border-color:#f7ca874d}.lesson-note-block.positive{border-color:var(--line-strong);background:rgba(var(--accent-rgb), .06)}.lesson-note-block h3{margin-bottom:7px;font-size:16px}.lesson-note-block p{color:var(--muted);margin:0;font-size:12px}.lesson-related{border-top:1px solid var(--line);margin-top:42px;padding-top:28px}.lesson-related h2{font-size:23px}.lesson-related-links{flex-wrap:wrap;gap:8px;display:flex}.lesson-related-links a{border:1px solid var(--line);color:var(--text-soft);border-radius:8px;padding:9px 12px;font-size:11px;text-decoration:none}.lesson-related-links a:hover{border-color:var(--accent);color:var(--accent)}.lesson-discussion{border:1px solid var(--line-strong);border-radius:var(--radius);background:rgba(var(--accent-rgb), .06);justify-content:space-between;align-items:center;gap:25px;margin-top:28px;padding:24px;display:flex}.lesson-discussion h2{margin:0 0 5px;font-size:21px}.lesson-discussion p{color:var(--muted);margin:0;font-size:12px}.chat-layout,.private-layout{grid-template-columns:minmax(0,1fr) 310px;align-items:start;gap:18px;display:grid}.chat-panel{flex-direction:column;min-height:620px;display:flex;overflow:hidden}.chat-panel-head,.private-conversation-head{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;min-height:68px;padding:0 22px;display:flex}.chat-panel-head>div,.private-conversation-head>div{align-items:center;gap:10px;display:flex}.chat-panel-head strong,.private-conversation-head strong{font-size:13px}.live-dot,.chat-status-dot,.private-status-dot{background:var(--success);width:8px;height:8px;box-shadow:0 0 11px rgba(var(--accent-rgb), .5);border-radius:50%;flex:none;display:inline-block}.status-label{color:var(--subtle);font-size:9px}.online-count{color:var(--muted);white-space:nowrap;font-size:9px}.messages{scrollbar-color:var(--line-strong) transparent;height:410px;padding:21px;overflow-y:auto}.messages-empty{min-height:100%;color:var(--muted);text-align:center;flex-direction:column;justify-content:center;align-items:center;padding:40px 16px;display:flex}.empty-glyph{color:var(--accent);margin-bottom:15px;font-size:42px;line-height:1}.messages-empty h2{margin-bottom:5px;font-size:22px}.messages-empty p{max-width:320px;font-size:12px}.message{gap:12px;margin-bottom:22px;display:flex}.message-avatar{border:1px solid var(--line-strong);background:rgba(var(--accent-rgb), .08);height:33px;color:var(--accent);font:10px var(--font-mono);border-radius:10px;flex:0 0 33px;place-items:center;display:grid}.message-content{flex:1;min-width:0}.message-meta{align-items:baseline;gap:10px;display:flex}.message-meta strong{color:var(--text-soft);font-size:12px}.message-meta time{color:var(--subtle);font:9px var(--font-mono)}.message-content p{color:var(--text-soft);overflow-wrap:anywhere;margin:5px 0 0;font-size:13px;line-height:1.55}.report-button{color:var(--subtle);background:0 0;border:0;margin-left:auto;padding:3px;font-size:9px}.report-button:hover{color:var(--danger)}.chat-composer-wrap{border-top:1px solid var(--line);margin-top:auto;padding:15px 18px 12px}.chat-composer{gap:8px;display:flex}.chat-composer input{border:1px solid var(--line);background:var(--bg-soft);min-width:0;height:46px;color:var(--text);border-radius:9px;outline:none;flex:1;padding:0 14px;font-size:13px}.chat-composer input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(var(--accent-rgb), .08)}.chat-composer input:disabled{opacity:.68}.chat-composer input::placeholder{color:var(--subtle)}.send-button{background:var(--primary-bg);width:46px;height:46px;color:var(--primary-text);border:0;border-radius:9px;flex:none;place-items:center;padding:0;font-size:24px;display:grid}.send-button:disabled{opacity:.38;cursor:not-allowed}.composer-foot{color:var(--subtle);justify-content:space-between;gap:15px;margin-top:9px;font-size:9px;display:flex}.inline-alert,.feedback-error,.feedback-success,.feedback-info{color:var(--warning);background:#f7ca8712;border:1px solid #f7ca874d;border-radius:8px;margin-bottom:10px;padding:10px 13px;font-size:11px;line-height:1.5}.feedback-error{color:var(--danger);background:#ff6e690f;border-color:#ff6e694d}.feedback-success{border-color:var(--line-strong);background:rgba(var(--accent-rgb), .07);color:var(--success)}.feedback-info{color:var(--cyan);background:#65dff00f;border-color:#65dff047}.identity-prompt{border:1px solid var(--line-strong);background:rgba(var(--accent-rgb), .07);border-radius:9px;justify-content:space-between;align-items:center;gap:13px;margin-bottom:13px;padding:13px;display:flex}.identity-prompt div,.identity-prompt-copy{flex-direction:column;gap:3px;display:flex}.identity-prompt strong{font-size:12px}.identity-prompt span,.guest-hint,.identity-note{color:var(--muted);font-size:10px}.guest-hint{margin-bottom:10px}.aside-card{padding:24px}.aside-card .eyebrow{color:var(--accent);letter-spacing:.1em;font-size:9px}.aside-card h2{margin:18px 0 7px;font-size:24px}.aside-card>p{color:var(--muted);margin-bottom:23px;font-size:11px}.rule{border-top:1px solid var(--line);color:var(--text-soft);gap:14px;padding:11px 0;font-size:11px;display:flex}.rule span:first-child{color:var(--accent)}.aside-note,.privacy-boundary{border-left:2px solid var(--line-strong);color:var(--subtle);margin:18px 3px;padding:4px 0 4px 16px;font-size:10px;line-height:1.7}.privacy-boundary strong{color:var(--text-soft);margin-bottom:8px;display:block}.privacy-boundary span{margin-top:6px;display:block}.public-preview{border:1px solid var(--line);background:var(--surface-2);border-radius:10px;margin-bottom:14px;padding:14px}.public-preview-expired,.public-preview-gate{border-color:var(--line-strong);background:rgba(var(--accent-rgb), .06)}.public-preview-copy{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.public-preview-copy strong{font-size:11px}.public-preview-copy p{color:var(--muted);margin:3px 0 0;font-size:10px;line-height:1.45}.preview-timer{color:var(--muted);justify-content:space-between;gap:15px;margin-bottom:8px;font-size:9px;display:flex}.preview-progress,.code-expiry-bar,.file-transfer-bar{background:var(--line);border-radius:999px;height:4px;overflow:hidden}.preview-progress-bar,.code-expiry-bar>span,.file-transfer-bar>span{border-radius:inherit;background:linear-gradient(90deg, var(--cyan), var(--accent));height:100%;display:block}.public-messages{position:relative}.public-preview-gate{text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:365px;padding:44px 24px;display:flex}.public-preview-gate h2{margin-bottom:8px;font-size:23px}.public-preview-gate p{max-width:410px;color:var(--muted);margin-bottom:20px;font-size:12px}.messages-loading{min-height:365px;color:var(--muted);place-items:center;font-size:11px;display:grid}.message.is-mine .message-avatar{border-color:var(--line-strong);background:rgba(var(--accent-rgb), .13)}.message-author{color:var(--text-soft);font-size:12px;font-weight:750}.message-body{color:var(--text-soft);overflow-wrap:anywhere;font-size:13px;line-height:1.55}.chat-status,.private-connection-status{align-items:center;gap:10px;display:flex}.chat-status-copy,.private-status-copy{flex-direction:column;gap:2px;display:flex}.chat-status-copy small,.private-status-copy small{color:var(--subtle);font-size:9px}.chat-status.is-connecting .chat-status-dot,.chat-status-dot.is-connecting,.private-connection-status.is-connecting .private-status-dot,.private-status-dot.is-connecting{background:var(--warning);animation:1.5s ease-in-out infinite pulse-status;box-shadow:0 0 11px #f7ca876b}.chat-status.is-offline .chat-status-dot,.chat-status-dot.is-offline,.private-connection-status.is-offline .private-status-dot,.private-status-dot.is-offline{background:var(--danger);box-shadow:none}@keyframes pulse-status{50%{opacity:.42;transform:scale(.84)}}.public-identity-chip{border:1px solid var(--line-strong);background:rgba(var(--accent-rgb), .07);color:var(--accent);font:9px var(--font-mono);border-radius:999px;align-items:center;padding:6px 9px;display:inline-flex}.character-count{color:var(--subtle);font-size:9px}.character-count.is-near-limit,.identity-note.is-locked{color:var(--warning)}.private-start{text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:510px;padding:65px 30px;display:flex}.private-start-icon{border:1px solid var(--line-strong);background:rgba(var(--accent-rgb), .08);width:68px;height:68px;color:var(--accent);border-radius:18px;place-items:center;margin-bottom:22px;font-size:34px;display:grid}.private-start h2{margin-bottom:10px;font-size:31px}.private-start>p{max-width:440px;color:var(--muted);margin-bottom:28px;font-size:12px}.private-actions{flex-direction:column;align-items:center;gap:15px;width:min(100%,430px);display:flex}.private-actions>span{color:var(--subtle);font:10px var(--font-mono)}.private-actions form{gap:7px;width:100%;display:flex}.private-actions input{border:1px solid var(--line);background:var(--bg-soft);min-width:0;height:48px;color:var(--text);font:11px var(--font-mono);border-radius:9px;flex:1;padding:0 12px}.private-actions input:focus{border-color:var(--accent)}.private-aside .aside-card{padding-bottom:15px}.private-step{border-top:1px solid var(--line);gap:15px;padding:18px 0;display:flex}.private-step:first-of-type{margin-top:22px}.private-step>span{color:var(--accent);font-size:10px}.private-step strong{font-size:11px}.private-step p{color:var(--muted);margin:5px 0 0;font-size:10px}.code-display{border:1px dashed var(--line-strong);background:var(--bg-soft);color:var(--accent);letter-spacing:.1em;word-break:break-all;border-radius:10px;margin:18px 0;padding:18px 20px;font-size:clamp(22px,4vw,40px)}.code-actions{align-items:center;gap:8px;display:flex}.waiting-status{color:var(--muted);margin-top:29px;font-size:11px}.spinner{vertical-align:middle;border:2px solid var(--line-strong);border-top-color:var(--accent);border-radius:50%;width:12px;height:12px;animation:1s linear infinite rotate;display:inline-block}.spinner.large{border-width:3px;width:48px;height:48px;margin-bottom:25px}@keyframes rotate{to{transform:rotate(360deg)}}.private-conversation{overflow:hidden}.private-safety,.private-safety-code{border-bottom:1px solid var(--line-strong);background:rgba(var(--accent-rgb), .065);flex-direction:column;gap:4px;padding:12px 22px;display:flex}.private-safety strong,.private-safety-code strong{color:var(--success);font:10px var(--font-mono);overflow-wrap:anywhere}.private-safety span,.private-safety-copy{color:var(--muted);font-size:10px;line-height:1.5}.private-messages{flex-direction:column;gap:14px;height:400px;display:flex}.private-messages .messages-empty{min-height:100%}.private-bubble,.private-message{border:1px solid var(--line);background:var(--surface-3);max-width:min(76%,500px);color:var(--text);overflow-wrap:anywhere;border-radius:12px 12px 12px 2px;align-self:flex-start;padding:11px 14px}.private-bubble.mine,.private-message.mine{border-color:var(--line-strong);background:rgba(var(--accent-rgb), .11);border-radius:12px 12px 2px;align-self:flex-end}.bubble-meta,.private-message-author,.private-message-time{color:var(--muted);margin-bottom:6px;font-size:8px}.private-bubble p,.private-message p{color:var(--text);white-space:pre-wrap;margin:0;font-size:13px;line-height:1.5}.private-bubble a,.private-message a{color:var(--accent);font-size:11px;text-decoration:underline}.shared-file img,.shared-file video{border-radius:8px;max-width:100%;max-height:260px;margin-bottom:8px;display:block}.private-composer{border-top:1px solid var(--line);padding:11px 16px 15px}.private-tools,.private-composer-meta{color:var(--subtle);align-items:center;gap:14px;margin-bottom:10px;font-size:9px;display:flex}.private-tools button,.private-tool-button{color:var(--text-soft);font:inherit;background:0 0;border:0;padding:5px 0}.private-tools button:hover,.private-tool-button:hover{color:var(--accent)}.private-tools>span,.private-composer-meta>span:last-child{margin-left:auto}.private-alert{margin:12px 0 0}.private-session-note,.private-code-meta{color:var(--muted);font-size:10px;line-height:1.55}.private-session-note{max-width:520px;margin:8px auto 0}.private-session-note strong{color:var(--text-soft);margin-bottom:4px;display:block}.private-waiting,.private-connecting{flex-direction:column;align-items:center;width:min(100%,520px);display:flex}.code-expiry{width:min(100%,420px);color:var(--subtle);margin:12px 0;font-size:9px}.connection-steps{grid-template-columns:repeat(3,1fr);gap:7px;width:min(100%,430px);margin:24px 0;display:grid}.connection-step{border:1px solid var(--line);background:var(--surface-2);min-height:64px;color:var(--subtle);text-align:center;border-radius:9px;place-items:center;padding:9px;font-size:9px;display:grid}.connection-step.is-active{color:var(--warning);border-color:#f7ca8761}.connection-step.is-complete{border-color:var(--line-strong);color:var(--success);background:rgba(var(--accent-rgb), .06)}.private-head-actions{align-items:center;gap:10px;display:flex}.session-countdown{color:var(--muted);font:9px var(--font-mono);white-space:nowrap}.private-active-status{align-items:center;gap:9px;display:flex}.private-safety-label{color:var(--subtle);font:8px var(--font-mono);letter-spacing:.08em;text-transform:uppercase}.private-safety-code{overflow-wrap:anywhere}.file-transfer{margin-top:8px}.file-transfers{border-top:1px solid var(--line);background:var(--surface-2);gap:7px;padding:9px 16px;display:grid}.file-transfer-meta{color:var(--muted);justify-content:space-between;gap:12px;margin-bottom:5px;font-size:9px;display:flex}.shared-file-size{color:var(--subtle);margin-top:4px;font-size:8px;display:block}.privacy-grid{grid-template-columns:repeat(2,1fr);gap:14px;display:grid}.privacy-card{padding:28px;position:relative}.privacy-number{color:var(--accent);letter-spacing:.1em;margin-bottom:45px;font-size:9px;display:block}.privacy-card h2{margin-bottom:13px;font-size:25px}.privacy-card p{color:var(--muted);font-size:12px}.privacy-card p:last-child{margin-bottom:0}.site-footer{border-top:1px solid var(--line);background:var(--bg-soft)}.footer-grid{grid-template-columns:1.55fr repeat(3,1fr);gap:60px;padding-top:68px;padding-bottom:60px;display:grid}.footer-brand .brand-symbol{width:36px;height:36px}.footer-brand .brand-word{font-size:20px}.footer-about p{max-width:320px;color:var(--muted);margin:19px 0 22px;font-size:12px}.footer-about>span{color:var(--subtle);letter-spacing:.14em;font-size:8px}.footer-column{flex-direction:column;align-items:flex-start;gap:11px;display:flex}.footer-column h2{color:var(--subtle);font:9px var(--font-mono);letter-spacing:.12em;text-transform:uppercase;margin:4px 0 10px}.footer-column a{color:var(--muted);font-size:11px;text-decoration:none}.footer-column a:hover{color:var(--accent)}.footer-bottom{border-top:1px solid var(--line);min-height:70px;color:var(--subtle);font:8px var(--font-mono);letter-spacing:.06em;justify-content:space-between;align-items:center;gap:25px;display:flex}.analytics-settings{color:var(--muted);letter-spacing:0;text-underline-offset:3px;background:0 0;border:0;padding:4px 0;font-size:11px;text-decoration:underline}.analytics-settings:hover{color:var(--accent)}.analytics-consent{z-index:100;border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--surface);width:min(520px,100vw - 40px);box-shadow:var(--shadow);color:var(--text);font-family:var(--font-sans);letter-spacing:0;padding:24px;position:fixed;bottom:20px;right:20px}.analytics-consent strong{font-size:18px}.analytics-consent p{color:var(--muted);font:13px/1.55 var(--font-sans);margin:10px 0 18px}.analytics-consent-actions{flex-wrap:wrap;gap:10px;display:flex}.analytics-consent-actions .button{flex:1;font-size:12px}@media (width<=1080px){.container{width:min(1240px,100% - 44px)}.nav-link{padding-inline:11px}.nav-link:after{left:11px;right:11px}.nav-cta{display:none}.hero-inner{grid-template-columns:minmax(0,1fr) minmax(310px,.72fr);gap:30px}.hero h1{font-size:clamp(58px,7vw,78px)}.feature-card{padding-inline:23px}.feature-card h3{font-size:25px}.learning-showcase-inner{grid-template-columns:minmax(330px,.8fr) minmax(0,1.2fr);gap:48px}.learning-visual,.learning-visual img{min-height:570px}.lesson-layout{gap:38px}.footer-grid{gap:35px}}@media (width<=820px){.header-inner{min-height:68px}.brand-symbol{width:36px;height:36px}.brand-word{font-size:20px}.main-nav{border-bottom:1px solid var(--line);background:var(--surface-glass);min-height:auto;box-shadow:var(--shadow);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);flex-direction:column;align-items:stretch;margin:0;padding:10px 22px 20px;display:none;position:absolute;top:68px;left:0;right:0}.main-nav.open{display:flex}.nav-link{border-bottom:1px solid var(--line);min-height:50px;padding:0}.nav-link:after{display:none}.nav-cta{width:100%;margin:12px 0 0;display:inline-flex}.header-tools{margin-left:auto}.menu-toggle{display:grid}.hero{min-height:700px}.hero:after{background:linear-gradient(90deg,#051019f5,#0510199e),linear-gradient(#0000 58%,#051019db)}.hero-media img{object-position:64% center;opacity:.78}.hero-inner{grid-template-rows:1fr auto;grid-template-columns:1fr;min-height:700px;padding-top:40px}.hero-content{max-width:640px;padding-block:55px 20px}.hero h1{max-width:620px}.hero-lead{max-width:560px}.hero-visual{pointer-events:none;position:absolute;inset:0}.visual-console,.visual-pill{display:none}.hero-proof{grid-column:1}.section-title-row{grid-template-columns:1fr;align-items:start;gap:20px}.feature-grid,.lessons-grid{grid-template-columns:repeat(2,1fr)}.feature-card:last-child{grid-column:1/-1;min-height:295px}.learning-showcase-inner{grid-template-columns:1fr}.learning-visual{aspect-ratio:16/9;min-height:auto;position:relative;top:auto}.learning-visual img{height:100%;min-height:0}.conversation-grid{grid-template-columns:1fr}.conversation-copy{max-width:650px}.trust-rail{grid-template-columns:1fr}.trust-rail>div{min-height:92px}.trust-rail>div+div{border-top:1px solid var(--line);border-left:0;padding-left:0}.builder-spotlight{grid-template-columns:1fr}.builder-image{min-height:360px}.faq-section{grid-template-columns:1fr;gap:30px}.home-cta-inner{flex-direction:column;justify-content:center;align-items:flex-start;padding-block:55px}.chat-layout,.private-layout{grid-template-columns:1fr}.chat-aside,.private-aside{grid-template-columns:1fr 1fr;gap:15px;display:grid}.aside-note,.privacy-boundary{margin-top:0}.lesson-layout{grid-template-columns:minmax(0,1fr)}.lesson-sidebar{position:static}.learn-path{grid-template-columns:1fr}.learn-path-steps{grid-template-columns:repeat(4,1fr)}.footer-grid{grid-template-columns:1.25fr repeat(3,1fr);gap:24px}}@media (width<=620px){.container{width:calc(100% - 32px)}.theme-toggle,.menu-toggle{width:38px;height:38px}.header-tools{gap:5px}.hero{min-height:730px}.hero-media img{object-position:68% center;opacity:.62}.hero:after{background:linear-gradient(90deg,#051019f7,#0510198f),linear-gradient(#0000 42%,#051019f0 92%)}.hero-inner{min-height:730px;padding-top:20px;padding-bottom:22px}.hero-content{padding-block:46px 12px}.hero-kicker{margin-bottom:20px}.hero h1{font-size:clamp(51px,15vw,68px)}.hero-lead{font-size:15px}.hero-actions{flex-direction:column;align-items:stretch}.hero-actions .button{width:100%}.hero-note{justify-content:center}.hero-proof{grid-template-columns:1fr;padding-top:10px}.hero-proof>span{padding:10px 0}.hero-proof>span+span{border-top:1px solid #c4ebdd1f;border-left:0;padding-left:0}.home-section,.conversation-section{padding-block:78px}.section-heading p{display:none}.section-title-row{margin:26px 0 30px}.section-title-row h2,.learning-copy h2,.conversation-copy h2,.faq-heading-wrap h2{font-size:41px}.feature-grid,.lessons-grid,.privacy-grid{grid-template-columns:1fr}.feature-card,.feature-card:last-child{grid-column:auto;min-height:305px}.learning-showcase{padding-block:75px}.learning-showcase-inner{gap:35px}.learning-visual{aspect-ratio:4/3;border-radius:var(--radius)}.journey-link{grid-template-columns:30px minmax(0,1fr) 20px;gap:10px;min-height:86px}.journey-time,.journey-main small{display:none}.conversation-grid{gap:40px;padding-block:36px 48px}.conversation-actions{flex-direction:column;align-items:stretch}.chat-preview{margin-inline:-4px}.preview-message.answer{margin-left:20px}.private-visual-card>img{height:150px}.builder-spotlight{border-radius:var(--radius);margin-bottom:80px}.builder-image{min-height:260px}.builder-copy{padding:30px 24px}.builder-copy h2{font-size:36px}.faq-section{padding-bottom:80px}.faq-list summary{min-height:75px;font-size:13px}.home-cta-inner{min-height:0}.home-cta h2{font-size:40px}.home-cta .button{width:100%}.page-spacing{padding-top:58px;padding-bottom:78px}.page-intro{margin-bottom:38px}.page-intro h1,.lesson-main h1{font-size:43px}.lead{font-size:15px}.intro-mark{display:none}.learning-note{flex-wrap:wrap;align-items:flex-start}.learning-note .button{width:100%;margin-left:0}.lesson-actions{flex-wrap:wrap}.lesson-actions .button{white-space:normal;text-align:center;flex:1}.learn-path-steps{grid-template-columns:1fr}.learn-category-heading{flex-direction:column;align-items:flex-start}.lesson-notes-grid{grid-template-columns:1fr}.lesson-discussion{flex-direction:column;align-items:flex-start}.lesson-discussion .button{width:100%}.chat-aside,.private-aside{grid-template-columns:1fr}.chat-panel-head,.private-conversation-head{padding-inline:13px}.status-label{display:none}.messages{padding:15px 12px}.chat-composer-wrap{padding:13px 10px}.identity-prompt{flex-direction:column;align-items:stretch}.private-start{min-height:460px;padding:45px 17px}.private-start h2{font-size:27px}.private-actions form{flex-direction:column}.private-actions input,.private-actions form .button{width:100%}.code-display{font-size:22px}.private-tools,.private-composer-meta{flex-wrap:wrap;gap:6px 15px}.private-tools>span,.private-composer-meta>span:last-child{width:100%;margin-left:0}.private-bubble,.private-message{max-width:90%}.footer-grid{grid-template-columns:repeat(2,1fr);gap:38px 25px;padding-top:50px}.footer-about{grid-column:1/-1}.footer-bottom{flex-direction:column;justify-content:center;align-items:flex-start;padding-block:20px}}@media (width<=390px){.brand-word{font-size:18px}.brand-symbol{width:34px;height:34px}.hero h1{font-size:47px}.footer-grid{grid-template-columns:1fr}.footer-about{grid-column:auto}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}