:root{--bg: #dfe8ef;--panel: #ffffff;--text: #333333;--muted: #6b7785;--link: #336699;--link-hover: #234c73;--nav-active: #0088cc;--accent: #8cbd2e;--accent-dark: #6f9a1f;--border: #d6dee6;--maxw: 980px;--radius: 3px;--font: Arial, Helvetica, sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font);font-size:14px;line-height:1.4;color:var(--text);background:var(--bg)}img{max-width:100%;height:auto}a{color:var(--link);text-decoration:none}a:hover{color:var(--link-hover);text-decoration:underline}h1,h2,h3,h4,h5{font-family:var(--font);font-weight:400;color:#333;margin:0 0 10px}h1{font-size:30px;line-height:30px;margin-bottom:18px;text-shadow:0 2px 2px rgba(0,0,0,.2)}h2{font-size:25px;line-height:28px;margin-bottom:15px;text-shadow:0 1px 2px rgba(0,0,0,.2)}h3{font-size:20px;line-height:24px;margin-bottom:7px;text-shadow:0 1px 1px rgba(0,0,0,.2)}h4{font-size:16px;line-height:25px;margin-bottom:5px;text-shadow:0 1px 1px rgba(0,0,0,.2)}h5{font-size:12px;line-height:16px;margin-bottom:5px;text-shadow:0 1px 1px rgba(0,0,0,.2)}p{margin:10px 0 12px}hr{border:0;border-top:1px solid var(--border);margin:2rem 0}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 16px}.skip-link{position:absolute;left:-9999px;top:0;background:#fff;padding:.5rem 1rem;z-index:100}.skip-link:focus{left:0}.site-header{background:#ffffffb3;position:relative}.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:nowrap;padding-top:10px;padding-bottom:0}.site-logo{display:flex;align-items:center;gap:.6rem;flex:none}.site-logo:hover{text-decoration:none}.site-logo img{display:block;height:80px;width:auto}.main-nav{min-width:0;flex:1;padding:23px 0 34px}.main-nav>ul{list-style:none;margin:0;padding:0;display:flex;gap:2px;flex-wrap:wrap;justify-content:flex-end}.main-nav a{display:block;padding:8px 12px;border-radius:var(--radius);color:#444;font-weight:400;font-size:16px;line-height:18px;white-space:nowrap}.main-nav a:hover{background:#eef3f8;text-decoration:none}.main-nav a[aria-current=page]{background:var(--nav-active);color:#fff}.main-nav a.is-strong{color:var(--link)}.main-nav .nav-caret{font-size:.7em;margin-left:.25em;opacity:.65}.main-nav li.has-children{position:relative}.main-nav .submenu{position:absolute;top:100%;left:0;z-index:50;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 4px 14px #0000001f;list-style:none;margin:0;padding:.35rem 0;min-width:16rem;display:none}.main-nav .submenu li{display:block}.main-nav .submenu a{display:block;padding:.45rem .9rem;border-radius:0;font-weight:500;white-space:nowrap}.main-nav .submenu a:hover{background:#eef3f8}.main-nav li.has-children:hover>.submenu,.main-nav li.has-children:focus-within>.submenu{display:block}.lang-switch{display:flex;gap:.35rem;align-items:center;flex:none}.lang-switch a{display:inline-flex;padding:1px;border:1px solid transparent;border-radius:2px;line-height:0}.lang-switch a img{display:block;width:18px;height:12px}.lang-switch a[aria-current=true]{border-color:#888}.lang-switch a:hover{text-decoration:none;border-color:#888}main{display:block;padding:1.5rem 0 2.5rem}.panel{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem 1.75rem;margin-bottom:1.5rem}.prose img{border-radius:4px}.prose ul,.prose ol{padding-left:1.4rem}.prose blockquote{margin:1.2rem 0;padding:.6rem 1rem;border-left:4px solid var(--accent);background:#f6f8f4;color:#444}.breadcrumbs{font-size:.85rem;color:var(--muted);margin-bottom:1rem}.breadcrumbs a{color:var(--muted)}.module-band{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:16px 0 18px}.module-box{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}.module-title{margin:0;padding:9px 12px 7px;font-size:20px;line-height:24px;font-weight:400;color:#333;text-shadow:0 1px 1px rgba(0,0,0,.2);border-bottom:1px solid var(--border);background:transparent}.module-title a{color:#333}.module-title a:hover{color:var(--link);text-decoration:none}.module-body{padding:10px 12px}.module-thumb{display:block;text-align:center;margin-bottom:8px}.module-thumb img{display:inline-block;max-width:100%;max-height:130px;width:auto;border-radius:3px}.module-body p{margin:6px 0}.module-links{list-style:none;margin:6px 0 0;padding:0}.module-links li{margin:0 0 4px;padding-left:12px;position:relative}.module-links li:before{content:"›";position:absolute;left:0;color:var(--muted)}.module-links a{color:var(--link)}.module-box .btn{padding:.4rem .9rem;font-size:13px}.article-feed{margin:0}.feed-item{padding:14px 0;border-bottom:1px solid var(--border);overflow:hidden}.feed-item:first-child{padding-top:4px}.feed-item:last-child{border-bottom:0}.feed-thumb{float:left;margin:6px 14px 8px 0;max-width:135px}.feed-thumb img{display:block;max-width:100%;height:auto;border-radius:3px}.feed-item h2{font-size:25px;line-height:28px;margin:0 0 8px;text-shadow:0 1px 2px rgba(0,0,0,.2)}.feed-item h2 a{color:var(--link)}.feed-item p{margin:0 0 12px;color:#333}.feed-item .feed-excerpt p:last-child{margin-bottom:6px}.readmore{display:inline-block;color:var(--link);font-size:14px;font-style:italic;font-weight:400}@media(max-width:720px){.module-band{grid-template-columns:repeat(2,1fr)}}@media(max-width:460px){.feed-thumb{float:none;margin:0 0 8px;max-width:100%}}.card-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}.card img{display:block;width:100%;aspect-ratio:4 / 3;object-fit:cover}.card-body{padding:12px 14px;flex:1}.card-body h3{margin-top:0;margin-bottom:6px;font-size:18px;line-height:22px}.card-body p{margin:4px 0;font-size:13px;line-height:18px;color:#555}.card .btn{margin:0 14px 14px;padding:.4rem .9rem;font-size:13px}.btn{display:inline-block;padding:.55rem 1rem;border-radius:var(--radius);background:var(--link);color:#fff;font-weight:600;border:0;cursor:pointer}.btn:hover{background:var(--link-hover);color:#fff;text-decoration:none}.btn.btn-accent{background:var(--accent-dark)}.btn.btn-accent:hover{background:#5e8419}.btn.btn-ghost{background:transparent;color:var(--link);border:1px solid var(--link)}.btn.btn-ghost:hover{background:#eef3f8;color:var(--link)}.tag-free{display:inline-block;font-size:.75rem;font-weight:700;text-transform:uppercase;color:#fff;background:var(--accent-dark);border-radius:3px;padding:1px 6px;letter-spacing:.03em}.course-series{margin-bottom:2rem}.course-series>h2{border-bottom:2px solid var(--accent);padding-bottom:.3rem}.course-list{list-style:none;margin:0;padding:0;display:grid;gap:.5rem}.course-row{display:flex;align-items:center;gap:1rem;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:.6rem .8rem}.course-row:hover{border-color:var(--accent)}.course-row img{width:64px;height:64px;object-fit:cover;border-radius:4px;flex:none}.course-row .course-title{flex:1;font-weight:600;color:#2b2b2b}.course-row .course-title small{display:block;font-weight:400;color:var(--muted)}.video-wrap{position:relative;background:#000;border-radius:var(--radius);overflow:hidden;aspect-ratio:16 / 9;margin:1.25rem 0}.video-wrap video{width:100%;height:100%;display:block}.video-embed{position:relative;aspect-ratio:16 / 9;background:#000;border-radius:var(--radius);overflow:hidden;margin:1.25rem 0}.video-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.video-actions{display:flex;gap:.75rem;flex-wrap:wrap;align-items:center;margin:1rem 0}.with-sidebar{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:28px;align-items:start}.with-sidebar.cols-left{grid-template-columns:250px minmax(0,1fr)}.with-sidebar>.main-col{min-width:0}.with-sidebar>.main-col>.wrap{max-width:none;padding:0}.sidebar{display:flex;flex-direction:column;gap:.9rem;font-size:.9rem}.sb-section{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:.7rem .85rem}.sb-section h3{margin:0 0 .45rem;font-size:.95rem;color:#2b2b2b;font-weight:700;letter-spacing:.01em}.sb-section h3 a{color:inherit}.sb-section p{margin:.35rem 0;line-height:1.4}.sb-nav{background:#f3f7fb}.sb-nav h3{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:700;margin-bottom:.35rem}.sb-nav ul{list-style:none;margin:0;padding:0}.sb-nav li{margin:0}.sb-nav a{display:block;padding:.3rem .15rem .3rem 1rem;position:relative;border-radius:3px;color:var(--link);font-weight:600}.sb-nav a:before{content:"›";position:absolute;left:.15rem;color:var(--muted);font-weight:400}.sb-nav a:hover{background:#e5edf4;text-decoration:none}.sb-media .sb-img{display:block;margin:.15rem 0 .45rem}.sb-media .sb-img img{display:block;max-width:100%;height:auto;border-radius:3px}.sb-media .sb-meta{font-style:italic;color:var(--muted);font-size:.85rem;margin-top:.2rem}.sb-media .btn{padding:.35rem .9rem;font-size:.85rem}.sb-shop .sb-img{text-align:center}.sb-shop .sb-img img{display:inline-block;max-height:110px;width:auto}.sb-video{position:relative;aspect-ratio:16 / 9;background:#000;border-radius:3px;overflow:hidden}.sb-video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.sb-note{background:transparent;border:0;padding:.25rem .15rem;color:var(--muted);font-size:.87rem}.sb-note h3{font-size:.82rem;text-transform:uppercase;letter-spacing:.06em;color:#2b2b2b;margin-bottom:.25rem}.sb-note p{font-style:italic;margin:0;line-height:1.4}.sb-read ul{list-style:none;margin:0;padding:0}.sb-read-item{display:flex;gap:.65rem;align-items:flex-start;padding:.55rem 0;border-top:1px solid var(--border)}.sb-read-item:first-child{border-top:0;padding-top:.25rem}.sb-read-thumb{flex:none;display:block;width:56px;height:56px;border-radius:3px;overflow:hidden;background:#eef3f8}.sb-read-thumb img{width:100%;height:100%;object-fit:cover;display:block}.sb-read-text{min-width:0}.sb-read-title{display:block;font-weight:600;color:var(--link);line-height:1.25}.sb-read-hint{display:block;color:var(--muted);font-size:.82rem;margin-top:.15rem}.home-intro{margin-top:1.5rem}.home-intro h2{margin-top:0}.home-intro+.card-grid{margin-top:1.25rem}@media(max-width:900px){.with-sidebar,.with-sidebar.cols-left{grid-template-columns:1fr}}.site-footer{background:transparent;color:#333;font-size:14px;padding:18px 0 24px;margin-top:24px;border-top:1px solid var(--border)}.site-footer a{color:var(--link)}.site-footer .wrap{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;max-width:var(--maxw)}@media(max-width:720px){.site-header .wrap{padding-top:8px;padding-bottom:6px;gap:.5rem;align-items:center}.site-logo img{height:40px}.main-nav{padding:0;flex:1;min-width:0;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}.main-nav::-webkit-scrollbar{display:none}.main-nav>ul{flex-wrap:nowrap;justify-content:flex-start;gap:2px}.main-nav a{padding:6px 10px;font-size:14px;line-height:16px}.lang-switch{gap:.25rem}.lang-switch a img{width:16px;height:11px}}@media(max-width:480px){.site-header .wrap{flex-wrap:wrap}.main-nav{flex-basis:100%;order:3;padding:4px 0 6px}}