.learn-shell{--background-primary:#ffffff;--background-secondary:#f8fafc;--card-background:#ffffff;--text-primary:#111827;--text-secondary:#4b5563;--border-color:#e5e7eb;--primary-color:#ec4899;--card-shadow:0 4px 12px rgba(0,0,0,0.08);height:100vh;overflow-y:auto;display:flex;flex-direction:column;background:var(--background-primary);color:var(--text-primary)}.learn-shell[data-theme=dark]{--background-primary:#0f172a;--background-secondary:#1e293b;--card-background:#1e293b;--text-primary:#f1f5f9;--text-secondary:#94a3b8;--border-color:#334155;--primary-color:#f472b6;--card-shadow:0 4px 16px rgba(0,0,0,0.45)}.learn-theme-toggle{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:999px;border:1px solid var(--border-color);background:var(--card-background);font-size:16px;cursor:pointer;flex-shrink:0;transition:border-color .15s ease}.learn-theme-toggle:hover{border-color:var(--primary-color)}.learn-header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--background-primary,#ffffff) 88%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border-color,#e5e7eb)}.learn-header-row{display:flex;align-items:center;justify-content:space-between;gap:16px;max-width:1120px;margin:0 auto;padding:12px 24px 8px}.learn-header-brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text-primary,#1f2937);font-weight:700;font-size:15.5px;letter-spacing:-.01em;white-space:nowrap}.learn-header-brand img{border-radius:6px}.learn-header-brand .brand-sub{display:block;font-size:11px;font-weight:500;color:var(--text-secondary,#6b7280);letter-spacing:.02em}.learn-header-cta{padding:8px 18px;border-radius:999px;background:linear-gradient(135deg,#ec4899,#8b5cf6);color:#ffffff;font-weight:600;font-size:14px;text-decoration:none;white-space:nowrap;box-shadow:0 2px 8px rgba(236,72,153,.25);transition:transform .15s ease,box-shadow .15s ease}.learn-header-cta:hover{transform:translateY(-1px);box-shadow:0 4px 14px rgba(236,72,153,.35)}.learn-nav{display:flex;gap:8px;max-width:1120px;margin:0 auto;padding:4px 24px 10px;overflow-x:auto;scrollbar-width:none}.learn-nav::-webkit-scrollbar{display:none}.learn-nav-pill{--pillar-accent:var(--primary-color,#1a73e8);flex-shrink:0;padding:6px 14px;border-radius:999px;border:1px solid var(--border-color,#e5e7eb);color:var(--text-secondary,#4b5563);font-size:13.5px;font-weight:500;text-decoration:none;transition:all .15s ease}.learn-nav-pill:hover{background:color-mix(in srgb,var(--pillar-accent) 8%,transparent)}.learn-nav-pill.active,.learn-nav-pill:hover{border-color:var(--pillar-accent);color:var(--text-primary,#1f2937)}.learn-nav-pill.active{background:color-mix(in srgb,var(--pillar-accent) 14%,transparent);font-weight:600}.learn-hero{position:relative;padding:72px 24px 64px;text-align:center;background:radial-gradient(900px 380px at 15% -10%,rgba(236,72,153,.14),transparent 60%),radial-gradient(900px 380px at 85% -10%,rgba(139,92,246,.13),transparent 60%),radial-gradient(700px 300px at 50% 110%,rgba(16,185,129,.08),transparent 60%)}.learn-hero h1{font-size:clamp(30px,5vw,46px);font-weight:800;letter-spacing:-.02em;line-height:1.12;margin:0 auto 16px;max-width:720px}.learn-hero h1 .accent{background:linear-gradient(120deg,#ec4899,#8b5cf6);-webkit-background-clip:text;background-clip:text;color:transparent}.learn-hero p{font-size:17px;line-height:1.65;color:var(--text-secondary,#4b5563);max-width:640px;margin:0 auto 28px}.learn-hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.learn-btn-primary,.learn-btn-secondary{padding:11px 24px;border-radius:999px;font-size:15px;font-weight:600;text-decoration:none;transition:transform .15s ease,box-shadow .15s ease}.learn-btn-primary{background:linear-gradient(135deg,#ec4899,#8b5cf6);color:#ffffff;box-shadow:0 4px 14px rgba(236,72,153,.3)}.learn-btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(236,72,153,.4)}.learn-btn-secondary{border:1px solid var(--border-color,#e5e7eb);color:var(--text-primary,#1f2937);background:var(--card-background,#ffffff)}.learn-btn-secondary:hover{border-color:var(--primary-color,#1a73e8)}.learn-pillar-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px;max-width:1080px;margin:48px auto 0;text-align:left}.learn-pillar-card{--pillar-accent:var(--primary-color,#1a73e8);display:flex;flex-direction:column;gap:8px;padding:18px 16px 16px;border-radius:14px;border:1px solid var(--border-color,#e5e7eb);border-top:3px solid var(--pillar-accent);background:var(--card-background,#ffffff);text-decoration:none;color:var(--text-primary,#1f2937);transition:transform .15s ease,box-shadow .15s ease}.learn-pillar-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(0,0,0,.08)}.learn-pillar-card .pillar-icon{width:36px;height:36px;display:flex;align-items:center;justify-content:center;font-size:19px;border-radius:10px;background:color-mix(in srgb,var(--pillar-accent) 14%,transparent)}.learn-pillar-card h3{font-size:14.5px;font-weight:700;margin:0;line-height:1.3}.learn-pillar-card p{font-size:12.5px;line-height:1.5;color:var(--text-secondary,#6b7280);margin:0}.learn-pillar-card .pillar-count{margin-top:auto;font-size:12px;font-weight:600;color:var(--pillar-accent)}.learn-main{flex:1;width:100%;max-width:1120px;margin:0 auto;padding:0 24px 72px}.learn-section-head{--pillar-accent:var(--primary-color,#1a73e8);display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin:52px 0 6px}.learn-section-head h2{font-size:23px;font-weight:750;letter-spacing:-.01em;margin:0;display:flex;align-items:center;gap:10px}.learn-section-head h2 a{color:inherit;text-decoration:none}.learn-section-head .pillar-dot{width:10px;height:10px;border-radius:999px;background:var(--pillar-accent);flex-shrink:0}.learn-section-head .see-all{font-size:13.5px;font-weight:600;color:var(--pillar-accent);text-decoration:none;white-space:nowrap}.learn-section-tagline{color:var(--text-secondary,#6b7280);font-size:14.5px;margin:0 0 18px}.learn-card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}.learn-card{--pillar-accent:var(--primary-color,#1a73e8);position:relative;display:flex;flex-direction:column;border:1px solid var(--border-color,#e5e7eb);border-radius:14px;overflow:hidden;background:var(--card-background,#ffffff);text-decoration:none;color:var(--text-primary,#1f2937);transition:transform .15s ease,box-shadow .15s ease}.learn-card:hover{box-shadow:0 10px 28px rgba(0,0,0,.1);transform:translateY(-3px)}.learn-card img{width:100%;aspect-ratio:16/9;-o-object-fit:cover;object-fit:cover}.learn-card-content{display:flex;flex-direction:column;gap:6px;padding:14px 16px 18px}.learn-card-content h3{font-size:15.5px;font-weight:650;line-height:1.35;margin:0}.learn-card-content p{font-size:13px;line-height:1.55;color:var(--text-secondary,#4b5563);margin:0}.learn-card .card-chip{position:absolute;top:10px;left:10px;padding:3px 10px;border-radius:999px;font-size:11px;font-weight:650;color:#ffffff;background:color-mix(in srgb,var(--pillar-accent) 85%,#000000 0%);box-shadow:0 1px 4px rgba(0,0,0,.25)}.learn-pillar-banner{--pillar-accent:var(--primary-color,#1a73e8);margin:28px 0 26px;padding:30px 30px 28px;border-radius:18px;border:1px solid color-mix(in srgb,var(--pillar-accent) 30%,var(--border-color,#e5e7eb));background:radial-gradient(500px 220px at 8% -30%,color-mix(in srgb,var(--pillar-accent) 18%,transparent),transparent 70%),var(--card-background,#ffffff)}.learn-pillar-banner .banner-icon{font-size:26px}.learn-pillar-banner h1{font-size:clamp(24px,3.4vw,32px);font-weight:800;letter-spacing:-.015em;margin:8px 0}.learn-pillar-banner p{color:var(--text-secondary,#4b5563);font-size:15.5px;max-width:680px;margin:0}.learn-article{max-width:780px;margin:0 auto;padding-top:28px}.learn-breadcrumb{--pillar-accent:var(--primary-color,#1a73e8);font-size:13px;color:var(--text-secondary,#6b7280);margin-bottom:14px}.learn-breadcrumb a{color:var(--pillar-accent);font-weight:550;text-decoration:none}.learn-breadcrumb a:hover{text-decoration:underline}.learn-article h1.article-title{font-size:clamp(26px,4vw,36px);font-weight:800;letter-spacing:-.02em;line-height:1.15;margin:4px 0 12px}.learn-article .article-lede{font-size:17px;line-height:1.6;color:var(--text-secondary,#4b5563);margin:0 0 20px}.learn-hero-image{width:100%;aspect-ratio:21/9;-o-object-fit:cover;object-fit:cover;border-radius:16px;margin:4px 0 32px}.learn-article-body{font-size:16.5px;line-height:1.75;color:var(--text-primary,#1f2937)}.learn-article-body h2{--pillar-accent:var(--primary-color,#1a73e8);font-size:23px;font-weight:750;letter-spacing:-.01em;margin:40px 0 14px;padding-top:10px}.learn-article-body h3{font-size:17.5px;font-weight:650;margin:26px 0 8px}.learn-article-body p{margin:0 0 16px}.learn-article-body ol,.learn-article-body ul{margin:0 0 18px;padding-left:24px}.learn-article-body li{margin-bottom:8px}.learn-article-body li::marker{color:var(--pillar-accent,var(--primary-color,#1a73e8))}.learn-article-body a{color:var(--primary-color,#1a73e8);text-decoration:underline;text-underline-offset:2px}.learn-article-body blockquote{border-left:3px solid var(--pillar-accent,var(--primary-color,#1a73e8));margin:0 0 18px;padding:10px 18px;color:var(--text-secondary,#4b5563);background:var(--background-secondary,#f9fafb);border-radius:0 10px 10px 0}.learn-sakura-box{margin-top:44px;padding:24px 26px;border-radius:16px;border:1px solid color-mix(in srgb,#ec4899 25%,var(--border-color,#e5e7eb));background:radial-gradient(400px 160px at 0 -40%,rgba(236,72,153,.1),transparent 70%),radial-gradient(400px 160px at 100% 140%,rgba(139,92,246,.08),transparent 70%),var(--card-background,#ffffff)}.learn-sakura-box h2{display:flex;align-items:center;gap:8px;font-size:16.5px;font-weight:750;margin:0 0 8px}.learn-sakura-box p{font-size:14.5px;line-height:1.65;color:var(--text-secondary,#4b5563);margin:0 0 14px}.learn-sakura-box a{display:inline-block;padding:9px 20px;border-radius:999px;background:linear-gradient(135deg,#ec4899,#8b5cf6);color:#ffffff;font-size:14px;font-weight:600;text-decoration:none;box-shadow:0 2px 10px rgba(236,72,153,.25)}.learn-article-footer{max-width:780px;margin:40px auto 0}.learn-pagenav{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px}.learn-pagenav a{--pillar-accent:var(--primary-color,#1a73e8);display:flex;flex-direction:column;gap:4px;padding:14px 18px;border-radius:12px;border:1px solid var(--border-color,#e5e7eb);background:var(--card-background,#ffffff);text-decoration:none;color:var(--text-primary,#1f2937);transition:border-color .15s ease,transform .15s ease}.learn-pagenav a:hover{border-color:var(--pillar-accent);transform:translateY(-2px)}.learn-pagenav a.next{text-align:right}.learn-pagenav .pagenav-label{font-size:12px;font-weight:600;color:var(--text-secondary,#6b7280);text-transform:uppercase;letter-spacing:.04em}.learn-pagenav .pagenav-title{font-size:14.5px;font-weight:650;line-height:1.35}.learn-footer{border-top:1px solid var(--border-color,#e5e7eb);padding:28px 24px;text-align:center;font-size:13px;background:var(--background-secondary,#f9fafb)}.learn-footer,.learn-footer a{color:var(--text-secondary,#6b7280)}.learn-footer a{text-decoration:underline;text-underline-offset:2px;margin:0 8px}@media (max-width:640px){.learn-hero{padding:48px 20px 44px}.learn-main{padding:0 16px 56px}.learn-pagenav{grid-template-columns:1fr}.learn-pillar-banner{padding:22px 20px}}