.download-page{min-height:100vh}.download-nav{max-width:1240px;margin:auto;padding:20px 32px;display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid var(--line)}.download-nav .brand{font-size:18px}.download-nav>a:last-child{font-size:13px;color:var(--cyan);text-decoration:none}.download-wrap{max-width:1240px;margin:auto;padding:54px 32px 80px}.download-kicker{font-size:12px;color:var(--cyan);letter-spacing:.1em}.download-wrap h1{font-size:clamp(34px,4vw,52px);line-height:1.25;margin:10px 0 14px}.download-lead{max-width:800px;color:var(--ink-dim);font-size:17px;line-height:1.8}.download-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:36px}.download-card{display:flex;flex-direction:column;padding:28px;border:1px solid var(--line-strong);border-radius:14px;background:linear-gradient(145deg,#151b26,#10141c)}.download-card:before{content:'';height:3px;background:var(--card-accent);width:62px;margin-bottom:20px}.download-num{font-size:12px;color:var(--card-accent)}.download-card h2{font-size:28px;margin:6px 0 10px}.download-card p{font-size:15px;color:var(--ink-dim);line-height:1.8}.download-card ol{margin:18px 0 23px;padding-left:23px;color:var(--ink-dim);font-size:14px;line-height:1.9}.download-card .btn{align-self:flex-start;margin-top:auto}.download-card .download-caveat{font-size:12px;color:var(--ink-faint);margin-top:16px}.download-bottom{margin-top:42px;border-left:3px solid var(--cyan);padding:24px 28px;background:#79e5dc0a}.download-bottom h2{font-size:21px}.download-bottom p{font-size:14px;color:var(--ink-dim);margin:8px 0 14px}.download-bottom a{color:var(--cyan);text-decoration:none}.download-footer{border-top:1px solid var(--line);padding:25px 32px;text-align:center;font-size:12px;color:var(--ink-faint)}@media(max-width:700px){.download-nav{padding:14px 18px}.download-nav .brand{font-size:14px}.download-nav .brand small{font-size:9px}.download-nav>a:last-child{font-size:11px}.download-wrap{padding:36px 18px 60px}.download-lead{font-size:15px}.download-grid{grid-template-columns:1fr;gap:14px;margin-top:25px}.download-card{padding:21px}.download-card h2{font-size:25px}.download-card .btn{width:100%}.download-bottom{padding:20px}}
.download-page{background:radial-gradient(ellipse 48% 330px at 5% 120px,#0b3d584d,transparent 85%),radial-gradient(ellipse 42% 350px at 96% 130px,#35246e55,transparent 88%),var(--bg-0)}
.download-wrap h1{background:var(--brand-gradient);-webkit-background-clip:text;background-clip:text;color:transparent}
.download-card{background:linear-gradient(135deg,#10192a,#0a0f1b 75%)}
.download-bottom{background:linear-gradient(110deg,#2ee6ff12,#8b5cf60d)}
@media(forced-colors:active){.download-wrap h1{background:none;color:CanvasText}}
.download-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:auto}.download-actions .btn{margin-top:0}.download-caveat a{color:var(--cyan)}
.case-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:30px 0}.case-card{border:1px solid var(--line-strong);border-radius:14px;overflow:hidden;background:#10192a}.case-card video{display:block;width:100%;aspect-ratio:16/9;background:#000}.case-card>div{padding:20px}.case-card h2{font-size:20px;margin:0 0 8px}.case-card p{color:var(--ink-dim);font-size:14px;line-height:1.7;margin:0}.course-overview{margin:26px 0 36px;padding:24px;border:1px solid var(--line-strong);border-radius:14px;background:#10192a}.course-overview h2{font-size:22px}.course-overview ol{color:var(--ink-dim);line-height:2}.course-links{display:flex;flex-wrap:wrap;gap:12px}.course-links .btn{min-height:44px}
@media(max-width:700px){.case-grid{grid-template-columns:1fr}.download-actions .btn{width:100%}}
.lesson-layout{max-width:1440px;margin:auto;display:grid;grid-template-columns:288px minmax(0,1fr);gap:38px;padding:34px 32px 80px;align-items:start}.lesson-sidebar{position:sticky;top:18px;max-height:calc(100vh - 36px);overflow:auto;padding:20px 15px;border:1px solid var(--line-strong);border-radius:14px;background:#10192a;scrollbar-width:thin}.lesson-sidebar-title{margin:0 8px 14px;font-size:20px;font-weight:700}.lesson-nav-primary{display:block;padding:10px 12px;border-radius:8px;color:var(--ink-dim);text-decoration:none;font-size:14px}.lesson-nav-primary[aria-current],.lesson-group-links a[aria-current],.lesson-nav-primary:hover,.lesson-group-links a:hover{background:#2ee6ff20;color:var(--cyan)}.lesson-sidebar-note{margin:12px 8px 16px;color:var(--ink-faint);font-size:12px;line-height:1.6}.lesson-group{border-top:1px solid var(--line);padding-top:4px}.lesson-group summary{cursor:pointer;padding:11px 8px;color:var(--ink);font-size:14px;font-weight:700}.lesson-group summary span{color:var(--cyan);margin-right:8px}.lesson-group-links{padding:2px 0 10px}.lesson-group-links a{display:flex;gap:8px;padding:8px 10px;border-radius:8px;color:var(--ink-dim);text-decoration:none;font-size:12px;line-height:1.45}.lesson-group-links a span{flex:none;color:var(--ink-faint)}.lesson-main{min-width:0}.lesson-main h1{font-size:clamp(34px,4vw,52px);line-height:1.25;margin:10px 0 14px;background:var(--brand-gradient);-webkit-background-clip:text;background-clip:text;color:transparent}.lesson-modules{display:grid;gap:20px}.lesson-module{padding:24px;border:1px solid var(--line-strong);border-radius:14px;background:#10192a;scroll-margin-top:24px}.lesson-module h2{font-size:21px;margin:0 0 15px}.lesson-module h2 span{color:var(--cyan);margin-right:8px}.lesson-module ol{list-style:none;margin:0;padding:0}.lesson-module li{display:flex;gap:14px;align-items:baseline;padding:12px 2px;border-top:1px solid var(--line);line-height:1.5;scroll-margin-top:24px}.lesson-code{flex:none;color:var(--cyan);font-size:13px;font-weight:700}.lesson-main .download-bottom{margin-top:28px}@media(max-width:900px){.lesson-layout{grid-template-columns:1fr;gap:22px;padding:24px 18px 60px}.lesson-sidebar{position:static;max-height:none}.lesson-group:not([open]) .lesson-group-links{display:none}.lesson-sidebar-note{margin-bottom:8px}}@media(forced-colors:active){.lesson-main h1{background:none;color:CanvasText}}
.lesson-detail h3{display:inline;font-size:17px;margin:0 0 0 10px}.lesson-detail p{margin:9px 0;color:var(--ink-dim);font-size:14px;line-height:1.75}.lesson-detail small{color:var(--ink-faint)}.lesson-detail .lesson-outcome{color:var(--ink)}