:root{
  --bg:#fbfcff;--fg:#111322;--muted:#5c6072;--line:#e8e6f6;
  --brand:#6d5efc;--brand-dark:#5646d6;--accent:#efecff;--card:#ffffff;
  --radius:18px;--maxw:1080px;--shadow:0 6px 24px rgba(0,0,0,.07);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,"Segoe UI",Roboto,sans-serif;color:var(--fg);background:var(--bg);line-height:1.65;font-size:17px}
a{color:var(--brand-dark);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
h1,h2,h3{font-family:system-ui,"Segoe UI",Roboto,sans-serif;line-height:1.25;letter-spacing:-.3px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
header.site{border-bottom:1px solid var(--line);position:sticky;top:0;background:#fbfcff;z-index:50}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;height:66px}
.brand{font-family:system-ui,"Segoe UI",Roboto,sans-serif;font-weight:800;font-size:21px;color:var(--brand-dark);letter-spacing:-.3px;
  display:inline-flex;align-items:center;gap:10px}
.brand span{color:var(--brand)}
.logo-img{width:38px;height:38px;object-fit:cover;border-radius:50%;
  flex:none;box-shadow:0 1px 4px rgba(0,0,0,.12)}
nav.menu a{color:var(--fg);margin-left:20px;font-weight:600;font-size:15px}
nav.menu a:hover{color:var(--brand-dark);text-decoration:none}
.hero{background:linear-gradient(180deg,var(--accent),#fbfcff);padding:66px 0 52px;text-align:center}
.hero h1{font-size:40px;line-height:1.14;margin:0 0 14px;letter-spacing:-.6px}
.hero p{font-size:19px;color:var(--muted);max-width:640px;margin:0 auto}
.hero .art{max-width:640px;margin:26px auto 0;aspect-ratio:16/9;border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin:48px 0}
.card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--card);
  transition:transform .15s ease,box-shadow .15s ease;display:flex;flex-direction:column}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.card .thumb{aspect-ratio:16/9;background:var(--accent);overflow:hidden;display:block}
.card .body{padding:20px 20px 22px}
.card .cat{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.6px;color:var(--brand)}
.card h3{margin:8px 0 8px;font-size:18px}
.card h3 a{color:var(--fg)}
.card p{margin:0;color:var(--muted);font-size:15px}
.section-title{font-size:26px;margin:52px 0 12px}
.section-title+.sub{color:var(--muted);margin:0 0 8px}
article.post{max-width:760px;margin:0 auto;padding:36px 0 10px}
article.post .cat{color:var(--brand);font-weight:700;text-transform:uppercase;font-size:12px;letter-spacing:.6px}
article.post h1{font-size:34px;margin:10px 0 10px}
article.post .meta{color:var(--muted);font-size:14px;margin-bottom:22px}
article.post .featured{aspect-ratio:21/9;border-radius:18px;overflow:hidden;margin:4px 0 6px;box-shadow:var(--shadow)}
article.post .credit{font-size:11px;color:var(--muted);margin:0 0 22px;text-align:right}
article.post h2{font-size:24px;margin:34px 0 10px}
article.post h3{font-size:20px;margin:24px 0 8px}
article.post p{margin:0 0 16px}
article.post ul{margin:0 0 18px;padding-left:22px}
article.post li{margin:6px 0}
.disclaimer{background:var(--accent);border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:18px;padding:16px 18px;color:var(--muted);font-size:14px;margin:30px 0}
.page{max-width:760px;margin:0 auto;padding:36px 0}
.page h1{font-size:32px;margin:0 0 18px}
.page h2{font-size:22px;margin:28px 0 10px}
.page p{margin:0 0 15px}
.crumbs{font-size:13px;color:var(--muted);padding:16px 0 0}
.crumbs a{color:var(--muted)}
.related{border-top:1px solid var(--line);margin-top:40px;padding-top:24px}
footer.site{border-top:1px solid var(--line);background:var(--accent);margin-top:60px;padding:34px 0}
footer.site .cols{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
footer.site a{color:var(--muted);display:block;margin:6px 0;font-size:14px}
footer.site .legal{color:var(--muted);font-size:13px;border-top:1px solid var(--line);margin-top:22px;padding-top:18px}
.hero .wrap{display:flex;flex-direction:column}.hero .art{order:-1;max-width:100%;height:330px;aspect-ratio:auto;margin:0 0 22px}
.postlist{display:flex;flex-direction:column;gap:24px;margin:34px 0}
.postrow{display:flex;gap:22px;align-items:stretch;border-bottom:1px solid var(--line);padding-bottom:24px}
.postrow .pthumb{width:38%;min-width:150px;flex:none;aspect-ratio:4/3;border-radius:18px;overflow:hidden;display:block}
.postrow .pbody{flex:1;display:flex;flex-direction:column;justify-content:center}
.postrow h3{font-size:22px;margin:6px 0 8px}.postrow h3 a{color:var(--fg)}
.postrow p{color:var(--muted);margin:0}
.featured-post{display:block;border:1px solid var(--line);border-radius:18px;overflow:hidden;margin:44px 0 18px;background:var(--card);box-shadow:var(--shadow)}
.featured-post .fp-img{aspect-ratio:2/1;overflow:hidden}
.featured-post .fp-body{padding:22px 26px 26px}
.featured-post h2{font-size:30px;margin:8px 0 10px;color:var(--fg)}
.featured-post p{color:var(--muted);margin:0;font-size:17px}
header.h-stacked .nav{flex-direction:column;align-items:flex-start;height:auto;padding:16px 0;gap:2px}
header.h-stacked .brand-tag{color:var(--muted);font-size:13px}
header.h-stacked nav.menu{margin-top:6px}
footer.site.minimal{padding:24px 0}
footer.site.minimal .mini{font-size:14px;color:var(--muted)}
footer.site.minimal .mini .brand{color:var(--brand-dark);font-weight:800}
footer.site.minimal a{display:inline;color:var(--muted);margin:0}
.takeaways{background:var(--accent);border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:18px;padding:18px 22px;margin:6px 0 28px}
.takeaways h2{font-size:18px;margin:0 0 10px;color:var(--brand-dark)}
.takeaways ul{margin:0;padding-left:20px}
.takeaways li{margin:7px 0;color:var(--fg)}
.faq{margin:40px 0 10px}
.faq-item{border-bottom:1px solid var(--line);padding:16px 0}
.faq-item h3{font-size:18px;margin:0 0 7px}
.faq-item p{margin:0;color:var(--muted)}
.topstrip{background:var(--brand-dark);color:#fff;font-size:12.5px;font-weight:600}
.topstrip .wrap{padding:8px 20px}
footer.site.dark{background:#16233a;color:#c3ccda;border-top:none}
footer.site.dark .brand{color:#fff}
footer.site.dark strong{color:#fff}
footer.site.dark p{color:#9fabbd!important}
footer.site.dark a{color:#aab6c8}
footer.site.dark a:hover{color:#fff}
footer.site.dark .legal{color:#8b98ab;border-top-color:#2a3a55}
.nav-cb{display:none}
.nav-btn{cursor:pointer;font-size:24px;line-height:1;user-select:none;color:var(--fg);padding:2px 8px}
header.h-toggle .nav{position:relative}
header.h-toggle nav.menu{display:none;position:absolute;top:calc(100% + 8px);right:0;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 18px;
  box-shadow:var(--shadow);min-width:210px;z-index:60}
header.h-toggle nav.menu a{margin:8px 0;display:block}
.nav-cb:checked ~ nav.menu{display:flex}
@media(min-width:900px){
  header.h-sidebar{position:fixed;top:0;left:0;width:240px;height:100vh;border-right:1px solid var(--line);
    border-bottom:none;background:var(--card);padding:26px 22px;z-index:60;overflow:auto}
  header.h-sidebar .side-inner{display:flex;flex-direction:column}
  header.h-sidebar .brand{font-size:22px}
  header.h-sidebar nav.menu{flex-direction:column;margin-top:24px}
  header.h-sidebar nav.menu a{margin:10px 0;display:block;font-size:15px}
  body:has(header.h-sidebar){padding-left:240px}
}
@media(max-width:899px){
  header.h-sidebar .side-inner{max-width:1080px;margin:0 auto;padding:0 20px;display:flex;
    align-items:center;justify-content:space-between;height:66px}
}
@media(max-width:820px){.grid{grid-template-columns:1fr!important;gap:16px}.hero .wrap{display:block!important}.hero .art{margin:20px auto 0!important}.hero h1{font-size:31px}.card{flex-direction:column!important}.card .thumb{width:100%!important;aspect-ratio:16/9!important}.postrow{flex-direction:column}.postrow .pthumb{width:100%!important;aspect-ratio:16/9!important}nav.menu{display:none}}