*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:#10233f;background:#f7f9fc;margin:0;font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto}main{min-height:60vh}:root{--bg:#f7f9fc;--surface:#fff;--surface-2:#eef3f9;--text:#10233f;--muted:#5e728f;--line:#dbe4f0;--brand:#f60;--brand-dark:#d75800;--navy:#0a1b35;--cyan:#34dbd6;--shadow:0 16px 45px #10233f14;--radius:24px;--container:1200px}.site-shell{flex-direction:column;min-height:100vh;display:flex}.container{width:min(var(--container), calc(100% - 32px));margin:0 auto}.page-wrap{background:var(--bg)}.section{padding:88px 0}.section-tight{padding-top:48px}.section-muted{background:linear-gradient(#f3f7fb 0%,#edf3fa 100%)}.section-dark{color:#f5f9ff;background:linear-gradient(135deg,#09162d 0%,#132d52 100%)}.cover{object-fit:cover}.ratio-16-9{aspect-ratio:16/9;position:relative;overflow:hidden}.site-header{z-index:50;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#ffffffeb;border-bottom:1px solid #dbe4f0e6;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:18px;min-height:84px;display:flex}.brand-link{align-items:center;display:inline-flex}.brand-logo{width:220px;height:auto}.header-nav{flex-wrap:wrap;gap:18px;display:flex}.nav-link{color:var(--text);opacity:.85;font-size:.96rem;font-weight:600;transition:color .2s,opacity .2s}.nav-link:hover{color:var(--brand);opacity:1}.button{border:1px solid #0000;border-radius:999px;justify-content:center;align-items:center;min-height:48px;padding:0 18px;font-weight:700;transition:transform .2s,box-shadow .2s,background .2s;display:inline-flex}.button:hover{transform:translateY(-1px)}.button-primary{background:var(--brand);color:#fff;box-shadow:0 12px 24px #ff66003d}.button-primary:hover{background:var(--brand-dark)}.button-secondary{color:var(--navy);border-color:var(--line);background:#ffffffeb}.button-small{min-height:42px;padding:0 16px;font-size:.92rem}.text-link{color:var(--brand);font-weight:700}.text-link:hover{text-decoration:underline}.hero-section{background:radial-gradient(circle at 0 0,#34dbd626,#0000 36%),radial-gradient(circle at 100% 100%,#ff66002e,#0000 34%),linear-gradient(#fff 0%,#f7f9fc 100%);position:relative;overflow:hidden}.hero-grid{grid-template-columns:1.05fr .95fr;align-items:center;gap:44px;min-height:700px;padding:64px 0 86px;display:grid}.eyebrow{color:var(--brand);text-transform:uppercase;letter-spacing:.12em;margin-bottom:14px;font-size:.82rem;font-weight:800}.hero-copy h1,.page-hero h1,.detail-hero h1,.simple-center h1{letter-spacing:-.03em;margin:0 0 16px;font-size:clamp(2.6rem,5vw,4.5rem);line-height:1.04}.hero-copy h1 span{color:var(--brand)}.hero-copy p,.page-hero p,.detail-hero .lead,.section-head p,.track-card p,.feature-item span,.site-footer p,.card-body p,.article-panel p,.sidebar-card p,.cta-band p{color:var(--muted);font-size:1.02rem;line-height:1.72}.hero-actions{flex-wrap:wrap;gap:14px;margin:26px 0 30px;display:flex}.metric-row{flex-wrap:wrap;gap:14px;display:flex}.metric-card{min-width:150px;box-shadow:var(--shadow);background:#fff;border:1px solid #dbe4f0e6;border-radius:18px;flex-direction:column;gap:6px;padding:18px 20px;display:flex}.metric-card strong{color:var(--navy);font-size:1.3rem}.metric-card span{color:var(--muted);font-size:.92rem}.hero-visual{position:relative}.hero-image-card{background:#09162d;border-radius:30px;min-height:560px;position:relative;overflow:hidden;box-shadow:0 30px 70px #0814262e}.hero-image-card:after{content:"";background:linear-gradient(#0308161a,#0308168c);position:absolute;inset:0}.hero-badge{z-index:2;color:var(--navy);box-shadow:var(--shadow);background:#fffffff0;border-radius:999px;padding:12px 16px;font-size:.92rem;font-weight:700;position:absolute}.hero-badge-top{top:18px;right:18px}.hero-badge-bottom{bottom:18px;left:18px}.fade-up{animation:.65s both fadeUp}.delay-1{animation-delay:.12s}@keyframes fadeUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.section-head,.section-head-inline{justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px;display:flex}.section-head h2,.section-head-inline h2,.cta-band h2{letter-spacing:-.03em;margin:0 0 12px;font-size:clamp(1.8rem,3vw,2.7rem);line-height:1.12}.card-grid{gap:22px;display:grid}.three-up{grid-template-columns:repeat(3,minmax(0,1fr))}.content-card{border:1px solid var(--line);box-shadow:var(--shadow);background:#fff;border-radius:24px;overflow:hidden}.card-image{background:#dfe8f1}.card-body{padding:20px}.card-meta,.card-actions,.chip-row,.detail-badges{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.card-meta{color:var(--muted);margin-bottom:10px;font-size:.9rem}.card-body h3{margin:0 0 10px;font-size:1.22rem;line-height:1.3}.card-actions{margin-top:14px}.pill,.chip{border-radius:999px;align-items:center;padding:8px 12px;font-size:.8rem;font-weight:700;display:inline-flex}.pill{color:var(--brand);background:#ff66001f}.chip{border:1px solid var(--line);color:var(--navy);background:#fff}.chip-solid{background:var(--navy);color:#fff;border-color:var(--navy)}.video-rail{scroll-snap-type:x proximity;grid-auto-columns:minmax(320px,1fr);grid-auto-flow:column;gap:18px;padding-bottom:8px;display:grid;overflow-x:auto}.video-card{border:1px solid var(--line);box-shadow:var(--shadow);scroll-snap-align:start;background:#fff;border-radius:24px;overflow:hidden}.video-thumb{aspect-ratio:16/9;position:relative}.video-card-body{padding:18px}.video-card-body h3{margin:12px 0 10px;font-size:1.12rem}.track-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;display:grid}.track-card{border:1px solid var(--line);box-shadow:var(--shadow);background:#fff;border-radius:24px;padding:28px}.track-card h3,.feature-item strong,.sidebar-card h3{color:var(--navy);margin:0 0 12px;font-size:1.28rem}.track-card ul,.check-list{color:var(--muted);margin:16px 0 0;padding-left:20px;line-height:1.8}.check-list li::marker{color:var(--brand)}.code-layout{grid-template-columns:1fr 1fr;align-items:start;gap:30px;display:grid}.feature-list{gap:14px;margin-top:22px;display:grid}.feature-item{background:#ffffff14;border:1px solid #ffffff1f;border-radius:20px;gap:6px;padding:18px 20px;display:grid}.code-showcase{background:#ffffff0f;border:1px solid #ffffff1f;border-radius:24px;padding:22px}.code-showcase-head h3{color:#fff;margin:0 0 14px;font-size:1.5rem}.code-block-wrap{background:#07162c;border:1px solid #ffffff1f;border-radius:20px;overflow:hidden}.code-block-head{color:#ced7e4;text-transform:uppercase;letter-spacing:.08em;background:#0d2549;justify-content:space-between;padding:12px 16px;font-size:.84rem;display:flex}.code-block{color:#eff6ff;margin:0;padding:18px;font-size:.93rem;line-height:1.7;overflow-x:auto}.page-hero,.detail-hero{background:radial-gradient(circle at 0 0,#34dbd621,#0000 34%),radial-gradient(circle at 100% 0,#ff660024,#0000 36%),linear-gradient(#fff 0%,#f4f8fc 100%)}.page-hero-small .container{padding:72px 0 44px}.detail-hero .container{padding:64px 0}.detail-grid{grid-template-columns:1.05fr .95fr;align-items:center;gap:32px;display:grid}.breadcrumb{color:var(--muted);flex-wrap:wrap;gap:8px;margin-bottom:20px;font-size:.92rem;display:flex}.lead{max-width:760px;font-size:1.07rem}.detail-cover{aspect-ratio:16/10;box-shadow:var(--shadow);border-radius:26px;position:relative;overflow:hidden}.detail-content-grid,.article-layout,.two-column-about{grid-template-columns:minmax(0,2fr) minmax(300px,1fr);gap:24px;display:grid}.article-layout{grid-template-columns:1fr}.article-panel,.sidebar-card{border:1px solid var(--line);box-shadow:var(--shadow);background:#fff;border-radius:24px}.article-panel{padding:28px}.article-wide{max-width:860px}.article-section+.article-section{margin-top:28px}.article-section h2{margin:0 0 12px;font-size:1.55rem}.article-section h3{margin:0 0 8px;font-size:1.1rem}.sidebar-panel{align-content:start;gap:18px;display:grid}.sidebar-card{padding:22px}.curriculum-list{gap:16px;display:grid}.curriculum-item{border-top:1px solid var(--line);grid-template-columns:56px 1fr;align-items:start;gap:14px;padding:16px 0;display:grid}.curriculum-item:first-child{border-top:none;padding-top:0}.curriculum-index{width:44px;height:44px;color:var(--brand);background:#ff66001f;border-radius:14px;justify-content:center;align-items:center;font-weight:800;display:inline-flex}.resource-checklist,.contact-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-top:24px;display:grid}.about-side-media{align-content:start;gap:22px;display:grid}.portrait-card{min-height:460px;box-shadow:var(--shadow);border-radius:24px;position:relative;overflow:hidden}.cta-band{color:#fff;box-shadow:var(--shadow);background:linear-gradient(135deg,#0d2344,#173968);border-radius:28px;justify-content:space-between;align-items:center;gap:24px;padding:34px;display:flex}.cta-band p{color:#dbe7f7}.cta-actions{flex-wrap:wrap;gap:12px;display:flex}.simple-center{text-align:center;padding:70px 0}.site-footer{color:#dbe7f7;background:#0a1830;margin-top:auto;padding-top:56px}.footer-grid{grid-template-columns:1.2fr .8fr .8fr 1fr;gap:24px;display:grid}.footer-brand{color:#fff;margin-bottom:14px;font-size:1.4rem;font-weight:800}.footer-copy,.footer-grid li{color:#bfd0e5;line-height:1.75}.footer-grid h4{color:#fff;margin:0 0 12px}.footer-grid ul{margin:0;padding:0;list-style:none}.footer-bottom{color:#bfd0e5;border-top:1px solid #ffffff1f;justify-content:space-between;gap:16px;margin-top:34px;padding:18px 0 24px;font-size:.92rem;display:flex}@media (max-width:1100px){.hero-grid,.detail-grid,.code-layout,.detail-content-grid,.two-column-about{grid-template-columns:1fr}.three-up,.track-grid,.resource-checklist,.contact-grid,.footer-grid{grid-template-columns:1fr 1fr}.cta-band{flex-direction:column;align-items:flex-start}}@media (max-width:860px){.header-inner{flex-wrap:wrap;justify-content:center;padding:12px 0}.header-nav{justify-content:center}.hero-grid{min-height:auto;padding:46px 0 68px}.hero-image-card{min-height:420px}.three-up,.track-grid,.resource-checklist,.contact-grid,.footer-grid{grid-template-columns:1fr}.section{padding:72px 0}.section-head,.section-head-inline{flex-direction:column;align-items:flex-start}.footer-bottom{flex-direction:column}}@media (max-width:560px){.container{width:min(var(--container), calc(100% - 22px))}.hero-copy h1,.page-hero h1,.detail-hero h1,.simple-center h1{font-size:2.25rem}.brand-logo{width:190px}.metric-card{width:100%}.hero-badge{padding:10px 12px;font-size:.82rem}.page-hero-small .container,.detail-hero .container{padding:54px 0 34px}.article-panel{padding:22px}.cta-band{padding:26px}}.tutorial-template-hero .small-note{color:var(--muted);margin-top:-14px;font-size:.92rem}.button-disabled{opacity:.75;cursor:not-allowed}.tutorial-layout{grid-template-columns:280px minmax(0,1fr);align-items:start;gap:24px;display:grid}.tutorial-toc{position:relative}.sticky-card{position:sticky;top:110px}.toc-list{gap:10px;margin:12px 0 0;padding:0;list-style:none;display:grid}.toc-list a{color:var(--muted);border:1px solid var(--line);background:#f6f9fc;border-radius:14px;padding:10px 12px;font-weight:700;display:block}.toc-list a:hover{color:var(--brand);background:#fff}.tutorial-article{padding:34px}.template-callout{color:#18324f;background:#34dbd61c;border:1px solid #34dbd659;border-radius:18px;margin-top:18px;padding:16px 18px;line-height:1.65}.warning-callout{background:#ff66001a;border-color:#ff660047}.template-callout code{background:#0a1b3514;border-radius:6px;padding:2px 6px}.content-subsection{border-top:1px solid var(--line);margin-top:22px;padding-top:18px}.content-subsection:first-of-type{border-top:none;padding-top:0}.content-subsection h3{color:var(--navy)}.result-gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:20px;display:grid}.result-card{border:1px solid var(--line);background:#fff;border-radius:22px;margin:0;overflow:hidden;box-shadow:0 10px 30px #10233f12}.result-image{aspect-ratio:16/9;background:#edf3fa;position:relative}.result-card figcaption{color:var(--muted);padding:14px 16px;font-size:.95rem;line-height:1.55}.code-block-stack{gap:20px;margin-top:18px;display:grid}.code-explain-card{border:1px solid var(--line);background:#fbfdff;border-radius:22px;padding:18px}.code-explain-card h3{margin-top:0}.download-panel{background:linear-gradient(135deg,#fff7f0,#f5fbff);border:1px solid #ff660038;border-radius:24px;padding:24px}@media (max-width:1100px){.tutorial-layout{grid-template-columns:1fr}.sticky-card{position:static}}@media (max-width:760px){.tutorial-article{padding:22px}.result-gallery{grid-template-columns:1fr}}.notebook-output-text{border:1px solid var(--line);background:#f7faff;border-radius:18px;margin:16px 0;overflow:hidden}.notebook-output-label{letter-spacing:.08em;text-transform:uppercase;color:var(--brand);border-bottom:1px solid var(--line);background:#fff;padding:10px 14px;font-size:.78rem;font-weight:800}.notebook-output-text pre{white-space:pre-wrap;color:#17314f;margin:0;padding:16px;font-size:.9rem;line-height:1.6;overflow-x:auto}.notebook-output-images{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:16px 0;display:grid}.mini-result-card{margin:0}@media (max-width:720px){.notebook-output-images{grid-template-columns:1fr}}