/* AI & Humanoid Robotics Weekly — shared styles */
:root{--ink:#111827;--muted:#6b7280;--line:#e5e7eb;--bg:#ffffff;--soft:#f8fafc;--accent:#e4572e;--link:#2563eb;}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:760px;margin:0 auto;padding:0 22px}
.site-header{border-bottom:1px solid var(--line);background:#fff}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:16px;padding-bottom:16px}
.brand{font-weight:800;letter-spacing:-.01em;color:var(--ink);font-size:18px}
.brand .dot{display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--accent);margin-right:8px;vertical-align:middle}
.site-header nav a{color:var(--muted);font-size:14px;margin-left:16px}
.hero{padding:44px 0 8px}
.hero h1{font-size:34px;line-height:1.15;margin:0 0 8px;letter-spacing:-.02em}
.hero p{color:var(--muted);margin:0}
.post-list{list-style:none;margin:28px 0 60px;padding:0}
.post-list li{padding:22px 0;border-top:1px solid var(--line)}
.post-list time{font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.post-list h2{margin:4px 0 6px;font-size:22px;line-height:1.3}
.post-list h2 a{color:var(--ink)}
.post-list p{margin:0;color:#374151}
.post-meta{font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-top:36px}
article h1{font-size:32px;line-height:1.2;margin:6px 0 14px;letter-spacing:-.02em}
.lede{font-size:19px;line-height:1.6;border-left:4px solid var(--accent);padding:4px 0 4px 16px;margin:18px 0 24px}
.glance{background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:16px 20px;margin:0 0 30px}
.glance h3{margin:0 0 8px;font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.glance ol{margin:0;padding-left:20px}
.glance li{margin:6px 0}
article h2{font-size:23px;margin:42px 0 6px;padding-top:14px;border-top:2px solid var(--ink);letter-spacing:-.01em}
article h3{font-size:19px;margin:28px 0 6px}
article ul{padding-left:22px}
article li{margin:5px 0}
.why{background:#fff7ed;border:1px solid #fed7aa;border-radius:8px;padding:10px 14px;margin:12px 0 4px;font-size:16px}
.why b{color:#9a3412}
figure{margin:22px 0}
figure img{width:100%;height:auto;border-radius:8px;border:1px solid var(--line);display:block}
figcaption{font-size:13px;color:var(--muted);margin-top:6px;line-height:1.45}
.src{font-size:14px;color:var(--muted)}
.note{font-size:14px;color:var(--muted);border-top:1px solid var(--line);margin-top:40px;padding-top:14px}
.site-footer{border-top:1px solid var(--line);margin-top:50px;padding:22px 0 40px;color:var(--muted);font-size:13px}
@media (max-width:600px){body{font-size:16px}.hero h1,article h1{font-size:27px}.lede{font-size:17px}}
/* glance -> section jump links */
article h2[id],article h3[id]{scroll-margin-top:20px}
.glance a.jump{color:inherit;text-decoration:none}
.glance a.jump::after{content:"\2193";color:var(--muted);font-size:.8em;margin-left:3px}
.glance a.jump:hover strong{text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:3px}
.glance a.jump:hover::after{color:var(--accent)}