:root{color-scheme:dark;--bg:#0B0D12;--ink:#F4F6FB;--ink2:#A8B0BE;--ink3:#6C7585;--line:#242A35;--primary:#8E7CFF;--link:#B9AFFF;--check:#2ED3B7;--aurora:linear-gradient(135deg,#7C5CFF 0%,#2D8CFF 52%,#1FD4C3 100%);--btn-grad:linear-gradient(135deg,#6E5BFF,#5E4BF0);--glass:rgba(15,18,26,0.62);--glass-line:rgba(255,255,255,0.08);--card-bg:rgba(255,255,255,0.04);--card-line:rgba(255,255,255,0.09);--card-hover-bg:rgba(255,255,255,0.065);--card-hover-line:rgba(255,255,255,0.17);--card-shadow:inset 0 1px 0 rgba(255,255,255,0.05);--card-hover-shadow:inset 0 1px 0 rgba(255,255,255,0.07),0 18px 44px -20px rgba(0,0,0,0.6);--chip-bg:rgba(142,124,255,0.16);--chip-text:#C2B6FF;--blob-a:rgba(124,92,255,0.30);--blob-b:rgba(45,140,255,0.20);--blob-c:rgba(31,212,195,0.15);--code-bg:rgba(255,255,255,0.06);--ease:cubic-bezier(0.2,0,0,1);--wrap:760px;--wide:1120px}
@media (prefers-color-scheme:light){:root{color-scheme:light;--bg:#F7F8FB;--ink:#0E1116;--ink2:#5A6372;--ink3:#8A93A3;--line:#E6E9EF;--primary:#6E5BFF;--link:#5E4BF0;--check:#0FA68F;--glass:rgba(255,255,255,0.7);--glass-line:rgba(14,17,22,0.08);--card-bg:rgba(255,255,255,0.72);--card-line:rgba(14,17,22,0.09);--card-hover-bg:rgba(255,255,255,0.92);--card-hover-line:rgba(14,17,22,0.16);--card-shadow:0 1px 2px rgba(16,24,40,0.05),0 4px 10px -4px rgba(16,24,40,0.06);--card-hover-shadow:0 12px 28px -10px rgba(16,24,40,0.16);--chip-bg:rgba(110,91,255,0.13);--chip-text:#4635C4;--blob-a:rgba(124,92,255,0.18);--blob-b:rgba(45,140,255,0.12);--blob-c:rgba(31,212,195,0.12);--code-bg:rgba(14,17,22,0.05)}}
*,*::before,*::after{box-sizing:border-box}*{margin:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font:400 1.02rem/1.68 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
img,svg{display:block;max-width:100%}a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;font-weight:750;line-height:1.16;letter-spacing:-0.02em;text-wrap:balance}
::selection{background:rgba(124,92,255,0.4)}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
.skip{position:fixed;top:-48px;left:16px;z-index:100;padding:10px 16px;border-radius:999px;background:var(--btn-grad);color:#fff;font-weight:600;font-size:.9rem;transition:top .2s var(--ease)}
.skip:focus{top:12px}
/* aurora backdrop */
.bg{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(8px)}
.b1{width:60vmax;height:60vmax;left:-20vmax;top:-24vmax;background:radial-gradient(closest-side,var(--blob-a),transparent 72%)}
.b2{width:52vmax;height:52vmax;right:-22vmax;top:-6vmax;background:radial-gradient(closest-side,var(--blob-b),transparent 70%)}
.b3{width:56vmax;height:56vmax;right:-16vmax;bottom:-30vmax;background:radial-gradient(closest-side,var(--blob-c),transparent 70%)}
/* nav */
.nav{position:sticky;top:0;z-index:50;background:var(--glass);-webkit-backdrop-filter:blur(18px) saturate(1.5);backdrop-filter:blur(18px) saturate(1.5);border-bottom:1px solid var(--glass-line)}
.nav-in{width:min(var(--wide),100% - 40px);margin-inline:auto;height:62px;display:flex;align-items:center;gap:22px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.16rem;letter-spacing:-0.02em}
.brand .mark{width:30px;height:30px;border-radius:9px;background:var(--aurora);box-shadow:0 6px 16px -6px rgba(124,92,255,.7);flex:none}
.brand .tag{font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--ink3);padding:3px 8px;border:1px solid var(--card-line);border-radius:999px}
.nav-links{display:flex;gap:20px;margin-left:auto;align-items:center}
.nav-links a{font-size:.92rem;font-weight:500;color:var(--ink2);transition:color .2s var(--ease)}
.nav-links a:hover{color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:999px;font-weight:600;font-size:.92rem;line-height:1.2;transition:transform .2s var(--ease),box-shadow .3s var(--ease);white-space:nowrap}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--btn-grad);color:#fff;box-shadow:0 1px 0 rgba(255,255,255,.18) inset,0 10px 28px -10px rgba(110,91,255,.65)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 36px -10px rgba(110,91,255,.75)}
.btn-glass{background:var(--card-bg);color:var(--ink);border:1px solid var(--card-line)}
.btn-glass:hover{transform:translateY(-2px);border-color:var(--card-hover-line)}
.btn-sm{padding:9px 16px;font-size:.86rem}
@media (max-width:640px){.nav-links a.hide-sm{display:none}}
/* layout */
.wrap{width:min(var(--wrap),100% - 40px);margin-inline:auto}
.wide{width:min(var(--wide),100% - 40px);margin-inline:auto}
main{padding:44px 0 20px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:.76rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--ink2)}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--aurora);box-shadow:0 0 12px rgba(124,92,255,.8)}
.chip{display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;font-size:.72rem;font-weight:700;letter-spacing:.03em;background:var(--chip-bg);color:var(--chip-text)}
.crumbs{font-size:.82rem;color:var(--ink3);margin-bottom:18px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.crumbs a{color:var(--ink2)}.crumbs a:hover{color:var(--ink)}
.crumbs .sep{opacity:.5}
/* index hero */
.blog-hero{text-align:center;padding:22px 0 8px}
.blog-hero h1{font-size:clamp(2rem,5vw,3.1rem);letter-spacing:-0.03em}
.blog-hero p{color:var(--ink2);max-width:56ch;margin:16px auto 0;font-size:1.08rem}
/* post cards grid */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;margin-top:40px}
.pcard{display:flex;flex-direction:column;background:var(--card-bg);border:1px solid var(--card-line);border-radius:20px;overflow:hidden;box-shadow:var(--card-shadow);transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease)}
.pcard:hover{transform:translateY(-4px);border-color:var(--card-hover-line);box-shadow:var(--card-hover-shadow)}
.pcard .thumb{aspect-ratio:1200/630;width:100%;object-fit:cover;background:var(--aurora)}
.pcard .pc-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:9px;flex:1}
.pcard .pc-meta{display:flex;gap:10px;align-items:center;font-size:.74rem;color:var(--ink3)}
.pcard h2{font-size:1.14rem;line-height:1.28;letter-spacing:-0.01em}
.pcard p{color:var(--ink2);font-size:.92rem;line-height:1.55}
.pcard .pc-more{margin-top:auto;font-weight:600;font-size:.86rem;color:var(--link)}
/* pagination */
.pager{display:flex;justify-content:space-between;gap:12px;margin:44px 0 8px}
.pager a{flex:0 0 auto}
.pager .muted{opacity:.4;pointer-events:none}
/* article */
.post-head{margin-bottom:24px}
.post-head h1{font-size:clamp(2.1rem,4.6vw,3rem);letter-spacing:-0.03em;margin:14px 0 0}
.post-meta{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;margin-top:18px;font-size:.86rem;color:var(--ink3)}
.post-meta time{color:var(--ink2)}
.banner-wrap{margin:26px 0 6px;border-radius:22px;overflow:hidden;border:1px solid var(--card-line);box-shadow:0 24px 60px -30px rgba(0,0,0,.6)}
.banner-wrap img{width:100%;aspect-ratio:1200/630;object-fit:cover;background:var(--aurora)}
.tldr{margin:26px 0;padding:18px 20px;border-radius:16px;background:var(--card-bg);border:1px solid var(--card-line);border-left:3px solid var(--primary)}
.tldr b{display:block;font-size:.74rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--primary);margin-bottom:6px}
.tldr p{color:var(--ink);font-size:1.04rem;line-height:1.6}
.prose{font-size:1.06rem;line-height:1.72}
.prose h2{font-size:1.6rem;margin:44px 0 14px;letter-spacing:-0.02em;scroll-margin-top:80px}
.prose h3{font-size:1.24rem;margin:32px 0 10px;letter-spacing:-0.015em}
.prose h4{font-size:1.06rem;margin:24px 0 8px}
.prose p{margin:0 0 18px}
.prose ul,.prose ol{margin:0 0 18px;padding-left:1.3em}
.prose li{margin:0 0 8px}
.prose li::marker{color:var(--primary)}
.prose a{color:var(--link);font-weight:600;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1.5px;text-decoration-color:color-mix(in srgb,var(--link) 45%,transparent)}
.prose a:hover{text-decoration-thickness:2.5px}
.prose strong{color:var(--ink);font-weight:700}
.prose code{font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;font-size:.9em;background:var(--code-bg);padding:2px 6px;border-radius:6px}
.prose blockquote{margin:22px 0;padding:4px 20px;border-left:3px solid var(--primary);color:var(--ink2);font-style:italic}
.prose blockquote p{margin:8px 0}
/* faq */
.faq{margin:52px 0 8px}
.faq h2{font-size:1.6rem;margin-bottom:8px}
.faq details{border:1px solid var(--card-line);border-radius:14px;background:var(--card-bg);margin-top:12px;overflow:hidden}
.faq summary{cursor:pointer;padding:16px 18px;font-weight:650;font-size:1.02rem;list-style:none;display:flex;justify-content:space-between;gap:12px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.3rem;color:var(--primary);transition:transform .2s var(--ease);flex:none}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .fa{padding:0 18px 16px;color:var(--ink2);line-height:1.62}
/* cta band */
.cta{margin:52px 0 8px;padding:34px 28px;border-radius:22px;text-align:center;position:relative;overflow:hidden;background:var(--card-bg);border:1px solid var(--card-line)}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 120% at 50% -20%,rgba(124,92,255,.22),transparent 70%);pointer-events:none}
.cta h2{font-size:1.6rem;position:relative}
.cta p{color:var(--ink2);max-width:48ch;margin:12px auto 0;position:relative}
.cta .cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:22px;position:relative}
/* related */
.related{margin:52px 0 8px}
.related h2{font-size:1.4rem;margin-bottom:6px}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:26px}
.tags .tg{font-size:.78rem;color:var(--ink2);background:var(--card-bg);border:1px solid var(--card-line);border-radius:999px;padding:5px 12px}
/* footer */
.footer{border-top:1px solid var(--line);margin-top:64px;padding:36px 0 56px}
.footer-in{display:flex;flex-wrap:wrap;align-items:center;gap:14px 26px}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--ink2);font-size:.92rem}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;margin-left:auto}
.footer-links a{color:var(--ink2);font-size:.9rem;font-weight:500}
.footer-links a:hover{color:var(--ink)}
.footer-legal{flex-basis:100%;color:var(--ink3);font-size:.8rem;margin-top:4px}
.empty{text-align:center;color:var(--ink2);padding:60px 0}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}