/* Bet on Future — site styles */
:root{
  --bg:#f8fafc; --bg2:#ffffff; --fg:#0f172a; --fg2:#334155; --muted:#64748b;
  --line:#e2e8f0; --soft:#f1f5f9; --accent:#ea580c; --accent2:#f59e0b; --ring:rgba(234,88,12,.35);
  --shadow:0 1px 2px rgba(15,23,42,.04),0 8px 24px rgba(15,23,42,.06);
  --shadow-lg:0 2px 6px rgba(15,23,42,.06),0 20px 50px rgba(15,23,42,.12);
  --r:16px; --r-sm:10px;
  --sans: ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --mono: ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  color-scheme: light;
}
[data-theme="dark"]{
  --bg:#0b1120; --bg2:#111827; --fg:#e5e7eb; --fg2:#cbd5e1; --muted:#94a3b8;
  --line:#1f2937; --soft:#162032; --accent:#fb923c; --accent2:#fbbf24; --ring:rgba(251,146,60,.35);
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25);
  --shadow-lg:0 2px 6px rgba(0,0,0,.4),0 20px 50px rgba(0,0,0,.45);
  color-scheme: dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
:focus-visible{outline:3px solid var(--ring);outline-offset:2px;border-radius:6px}
.container{max-width:1160px;margin:0 auto;padding:0 24px}
.narrow{max-width:780px}
.i{width:20px;height:20px;flex:none}
.i-sm{width:16px;height:16px}
.muted{color:var(--muted)}
.skip{position:absolute;left:-999px;top:8px;background:var(--fg);color:var(--bg);padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{left:8px}

/* header */
.hdr{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:saturate(1.6) blur(12px);border-bottom:1px solid var(--line)}
.hdr-in{display:flex;align-items:center;gap:24px;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.01em;text-decoration:none;font-size:17px}
.logo-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--accent2),var(--accent));color:#fff;box-shadow:0 6px 16px var(--ring)}
.logo-mark .i{width:19px;height:19px}
.nav{display:flex;gap:4px;margin-left:12px}
.nav a{text-decoration:none;color:var(--fg2);font-weight:500;font-size:15px;padding:8px 12px;border-radius:999px;transition:background .15s,color .15s}
.nav a:hover,.nav a[aria-current]{background:var(--soft);color:var(--fg)}
.hdr-actions{margin-left:auto;display:flex;gap:6px;align-items:center}
.icon-btn{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;border:1px solid transparent;background:transparent;color:var(--fg2);cursor:pointer;text-decoration:none;transition:background .15s,border-color .15s}
.icon-btn:hover{background:var(--soft);border-color:var(--line);color:var(--fg)}
.t-moon{display:none}[data-theme="dark"] .t-sun{display:none}[data-theme="dark"] .t-moon{display:block}
.t-sun,.t-moon{line-height:0}
.menu-btn{display:none}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font:600 15px var(--sans);padding:11px 18px;border-radius:12px;border:1px solid transparent;background:linear-gradient(135deg,var(--accent2),var(--accent));color:#fff;text-decoration:none;cursor:pointer;box-shadow:0 8px 20px var(--ring);transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-1px);box-shadow:0 12px 26px var(--ring)}
.btn-ghost{background:var(--bg2);color:var(--fg);border-color:var(--line);box-shadow:none}
.btn-ghost:hover{border-color:var(--accent);box-shadow:none}
.btn-sm{padding:7px 12px;font-size:13.5px;border-radius:10px}

/* hero */
.hero{position:relative;overflow:hidden;padding:64px 0 40px}
.hero:before{content:"";position:absolute;inset:-40% -10% auto auto;width:720px;height:720px;background:radial-gradient(closest-side,color-mix(in srgb,var(--accent2) 22%,transparent),transparent);pointer-events:none}
.hero-in{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--accent);background:color-mix(in srgb,var(--accent) 10%,transparent);padding:6px 12px;border-radius:999px;margin-bottom:18px}
h1{font-size:clamp(34px,5vw,56px);line-height:1.06;letter-spacing:-.03em;margin:0 0 18px}
.grad{background:linear-gradient(135deg,var(--accent2),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:clamp(17px,2vw,20px);color:var(--fg2);margin:0 0 26px;max-width:62ch}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.stats{list-style:none;display:flex;gap:28px;padding:0;margin:34px 0 0;color:var(--muted);font-size:14px;flex-wrap:wrap}
.stats strong{display:block;font-size:26px;color:var(--fg);letter-spacing:-.02em}

/* blocks */
.block{padding:40px 24px}
.block-hdr{display:flex;align-items:end;justify-content:space-between;margin-bottom:22px;gap:16px}
.block-hdr h2,.related h2{font-size:26px;letter-spacing:-.02em;margin:0}
.more{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--accent);text-decoration:none;font-size:15px}
.more:hover .i{transform:translateX(3px)}.more .i{transition:transform .15s}
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}

/* cards */
.card{display:flex;flex-direction:column;background:var(--bg2);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:color-mix(in srgb,var(--accent) 35%,var(--line))}
.card-img{display:block;aspect-ratio:1200/630;overflow:hidden;background:var(--soft)}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.card:hover .card-img img{transform:scale(1.04)}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card h3{font-size:19px;line-height:1.3;letter-spacing:-.01em;margin:0}
.card h3 a{text-decoration:none}
.card h3 a:hover{color:var(--accent)}
.card p{margin:0;color:var(--fg2);font-size:15px}
.card-big h3{font-size:24px}
.card-top{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;text-decoration:none;color:var(--c);background:color-mix(in srgb,var(--c) 12%,transparent);padding:4px 10px;border-radius:999px}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;padding:4px 10px;border-radius:999px}
.badge-guide{color:#0e7490;background:rgba(14,116,144,.12)}
[data-theme="dark"] .badge-guide{color:#67e8f9;background:rgba(103,232,249,.12)}
.meta{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-top:auto;flex-wrap:wrap}
.meta .i{vertical-align:-3px}
.av{width:24px;height:24px;border-radius:50%}
.sep{opacity:.5}

/* topics, guides, tools */
.topics{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.topic{display:flex;align-items:center;gap:14px;padding:18px;border:1px solid var(--line);border-radius:var(--r);background:var(--bg2);text-decoration:none;transition:border-color .2s,transform .2s,box-shadow .2s}
.topic:hover{border-color:var(--c);transform:translateY(-2px);box-shadow:var(--shadow)}
.topic-ic{display:grid;place-items:center;width:46px;height:46px;border-radius:12px;color:var(--c);background:color-mix(in srgb,var(--c) 13%,transparent);flex:none}
.topic-tx{display:flex;flex-direction:column}.topic-tx span{font-size:13.5px;color:var(--muted)}
.topic .go{margin-left:auto;color:var(--muted)}
.guides{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.guide{display:flex;flex-direction:column;gap:8px;padding:22px;border-radius:var(--r);border:1px solid var(--line);background:linear-gradient(180deg,var(--bg2),var(--soft));text-decoration:none;transition:transform .2s,box-shadow .2s}
.guide:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.guide strong{font-size:18px;line-height:1.3}
.guide>span:not(.guide-ic):not(.guide-meta){color:var(--fg2);font-size:15px}
.guide-ic{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--accent2),var(--accent));color:#fff;margin-bottom:6px}
.guide-meta{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);margin-top:auto}
.guides-list{display:grid;gap:20px}
.guide-lg{flex-direction:row;padding:0;overflow:hidden;align-items:stretch}
.guide-lg img{width:40%;object-fit:cover}
.guide-lg>div{display:flex;flex-direction:column;gap:10px;padding:26px}
.guide-lg strong{font-size:22px}
.tools{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.tool{display:flex;align-items:center;gap:12px;padding:14px;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--bg2);text-decoration:none;transition:border-color .2s}
.tool:hover{border-color:var(--accent)}
.tool span span{display:block;font-size:13px;color:var(--muted)}
.tool-ic{display:grid;place-items:center;width:40px;height:40px;border-radius:10px;background:var(--soft);color:var(--accent);flex:none}
.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.tool-card{display:flex;flex-direction:column;gap:12px;padding:20px;border:1px solid var(--line);border-radius:var(--r);background:var(--bg2);box-shadow:var(--shadow);scroll-margin-top:90px}
.tool-card:target{border-color:var(--accent);box-shadow:0 0 0 4px var(--ring)}
.tool-card-hdr{display:flex;gap:12px;align-items:center}
.tool-card h3{margin:0;font-size:18px}
.tool-card p{margin:0;color:var(--fg2);font-size:15px;flex:1}
.tool-foot{display:flex;justify-content:space-between;align-items:center;font-size:13.5px;border-top:1px solid var(--line);padding-top:12px}
.tool-foot a{display:inline-flex;align-items:center;gap:5px;color:var(--accent);text-decoration:none;font-weight:600}
.lic{display:inline-flex;align-items:center;gap:6px;color:var(--muted)}
.note{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:14px;margin-top:22px}

/* CTA */
.cta{display:flex;align-items:center;gap:22px;padding:30px 32px;border-radius:22px;background:linear-gradient(135deg,#0f172a,#1e293b);color:#e2e8f0;box-shadow:var(--shadow-lg)}
.cta h2{margin:0 0 4px;font-size:24px;color:#fff}.cta p{margin:0;color:#cbd5e1}
.cta .btn{margin-left:auto;white-space:nowrap}
.cta-ic{width:48px;height:48px;color:var(--accent2);flex:none}

/* page hero */
.page-hero{padding:56px 0 18px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,var(--soft),transparent)}
.page-hero h1{font-size:clamp(32px,4vw,46px)}
.topic-hero{background:linear-gradient(180deg,color-mix(in srgb,var(--c) 12%,transparent),transparent)}
.topic-ic-lg{width:60px;height:60px;border-radius:16px;margin-bottom:16px}.topic-ic-lg .i{width:28px;height:28px}
.topic-hero .kicker{color:var(--c);background:color-mix(in srgb,var(--c) 12%,transparent)}
.nf{padding:90px 0}

/* filters */
.filters{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:24px}
.chip{display:inline-flex;align-items:center;gap:6px;font:600 14px var(--sans);padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:var(--bg2);color:var(--fg2);cursor:pointer}
.chip:hover{border-color:var(--accent)}
.chip.active{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.filter-search{margin-left:auto;display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:999px;padding:7px 14px;background:var(--bg2);color:var(--muted)}
.filter-search input{border:0;background:transparent;outline:0;font:14px var(--sans);color:var(--fg);width:200px}
.empty{color:var(--muted);text-align:center;padding:30px}

/* article */
.progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--accent2),var(--accent));z-index:60}
.crumbs{display:flex;align-items:center;gap:6px;font-size:14px;color:var(--muted);padding-top:26px}
.crumbs a{text-decoration:none}.crumbs a:hover{color:var(--accent)}
.post-hdr{max-width:820px;padding:22px 0 26px}
.post-hdr h1{font-size:clamp(32px,4.4vw,50px);margin-top:14px}
.meta-lg{margin-top:4px;gap:12px;font-size:14px}
.meta-lg .av{width:36px;height:36px}
.meta-lg div{display:flex;flex-direction:column;line-height:1.25}.meta-lg div span{font-size:12.5px}
.meta-lg strong{color:var(--fg)}
.share{margin-left:auto}
.post-cover{width:100%;border-radius:22px;box-shadow:var(--shadow-lg);aspect-ratio:1200/630;object-fit:cover}
.post-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:56px;padding:40px 0 20px}
.prose{font-size:18px;line-height:1.78;color:var(--fg2);max-width:72ch}
.prose p{margin:0 0 22px}
.prose h2{font-size:26px;line-height:1.25;color:var(--fg);letter-spacing:-.02em;margin:42px 0 14px;position:relative}
.prose h2 .anchor{position:absolute;left:-26px;color:var(--muted);text-decoration:none;opacity:0;font-weight:400}
.prose h2:hover .anchor{opacity:1}
.prose ul,.prose ol{margin:0 0 22px;padding-left:24px}.prose li{margin:6px 0}
.prose li::marker{color:var(--accent)}
.prose a{color:var(--accent)}
.prose-p{color:var(--fg2);font-size:17px}
blockquote{margin:30px 0;padding:22px 26px 22px 64px;position:relative;border-radius:var(--r);background:var(--soft);color:var(--fg);font-size:21px;line-height:1.5;font-weight:500}
blockquote p{margin:0}
blockquote .q{position:absolute;left:22px;top:24px;color:var(--accent);width:26px;height:26px}
.tip{display:flex;gap:14px;align-items:flex-start;padding:16px 18px;border-radius:var(--r-sm);border:1px solid color-mix(in srgb,var(--accent2) 45%,var(--line));background:color-mix(in srgb,var(--accent2) 9%,transparent);margin:26px 0;font-size:16px}
.tip .i{color:var(--accent);margin-top:3px}.tip p{margin:0}
.code{position:relative;margin:0 0 24px}
pre{margin:0;background:#0f172a;color:#e2e8f0;padding:18px 20px;border-radius:var(--r-sm);overflow:auto;font:14px/1.6 var(--mono);border:1px solid #1e293b}
.copy{position:absolute;top:10px;right:10px;display:grid;place-items:center;width:32px;height:32px;border-radius:8px;border:1px solid #334155;background:#1e293b;color:#cbd5e1;cursor:pointer;opacity:.8}
.copy:hover{opacity:1}.copy.done{color:#4ade80;border-color:#166534}
.author-box{display:flex;gap:16px;align-items:flex-start;margin:44px 0 0;padding:20px;border:1px solid var(--line);border-radius:var(--r);background:var(--bg2)}
.author-box img{width:56px;height:56px;border-radius:50%}
.author-box strong{display:block;color:var(--fg);font-size:17px}.author-box span{font-size:13.5px;color:var(--muted)}
.author-box p{margin:6px 0 0;font-size:15px}
.post-side{position:relative}
.toc{position:sticky;top:96px;margin-bottom:22px}
.toc h4,.side-card h4{font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 10px}
.toc ol{list-style:none;padding:0;margin:0;border-left:2px solid var(--line)}
.toc a{display:block;padding:6px 0 6px 14px;margin-left:-2px;border-left:2px solid transparent;text-decoration:none;color:var(--fg2);font-size:14.5px}
.toc a:hover,.toc a.on{color:var(--accent);border-left-color:var(--accent)}
.side-card{padding:18px;border:1px solid var(--line);border-radius:var(--r);background:var(--bg2)}
.side-card>.i{color:var(--accent);margin-bottom:8px}
.side-card p{font-size:14px;color:var(--fg2);margin:0 0 12px}
.related{padding:30px 0 50px;border-top:1px solid var(--line);margin-top:20px}
.related h2{margin-bottom:20px}

/* about / faq */
.values{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.value{padding:22px;border:1px solid var(--line);border-radius:var(--r);background:var(--bg2)}
.value .i{color:var(--accent);width:26px;height:26px;margin-bottom:10px}
.value strong{display:block;font-size:17px}.value p{margin:6px 0 0;color:var(--fg2);font-size:15px}
.two-col{display:grid;grid-template-columns:1.1fr .9fr;gap:48px}
.two-col h2{font-size:24px;margin:0 0 12px}
.timeline{list-style:none;padding:0;margin:0;border-left:2px solid var(--line)}
.timeline li{position:relative;padding:0 0 18px 22px}
.timeline li:before{content:"";position:absolute;left:-7px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--ring)}
.timeline span{font-weight:700}.timeline p{margin:2px 0 0;color:var(--fg2)}
.people{display:grid;gap:16px}
.person{display:grid;grid-template-columns:72px 1fr;column-gap:16px;padding:18px;border:1px solid var(--line);border-radius:var(--r);background:var(--bg2)}
.person img{grid-row:span 3;width:72px;height:72px;border-radius:50%}
.person span{color:var(--muted);font-size:14px}.person p{margin:4px 0 0;font-size:15px;color:var(--fg2)}
.faq{border:1px solid var(--line);border-radius:var(--r-sm);background:var(--bg2);margin-bottom:12px}
.faq summary{list-style:none;cursor:pointer;padding:18px 20px;font-weight:600;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary .i{transition:transform .2s;color:var(--muted)}
.faq[open] summary .i{transform:rotate(180deg)}
.faq p{margin:0;padding:0 20px 18px;color:var(--fg2)}
.lic-text{white-space:pre-wrap;font-size:13px}

/* search */
.search{position:fixed;inset:0;z-index:80;background:rgba(2,6,23,.55);backdrop-filter:blur(4px);display:flex;justify-content:center;align-items:flex-start;padding:12vh 16px 16px}
.search[hidden]{display:none}
.search-box{width:min(640px,100%);background:var(--bg2);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-lg);overflow:hidden}
.search-in{display:flex;align-items:center;gap:12px;padding:16px 18px;border-bottom:1px solid var(--line);color:var(--muted)}
.search-in input{flex:1;border:0;outline:0;background:transparent;font:17px var(--sans);color:var(--fg)}
kbd{font:12px var(--mono);border:1px solid var(--line);border-radius:6px;padding:2px 6px;color:var(--muted)}
.search-res{list-style:none;margin:0;padding:8px;max-height:56vh;overflow:auto}
.search-res a{display:block;padding:12px 14px;border-radius:12px;text-decoration:none}
.search-res a:hover,.search-res a.sel{background:var(--soft)}
.search-res strong{display:block}.search-res span{font-size:13.5px;color:var(--muted)}
.search-res em{font-style:normal;font-size:12px;font-weight:600;color:var(--accent);margin-right:6px}
.search-empty{padding:18px;color:var(--muted);text-align:center}

/* footer */
.ftr{border-top:1px solid var(--line);margin-top:30px;background:var(--bg2)}
.ftr-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding:48px 24px 24px}
.ftr-brand p{color:var(--fg2);font-size:15px;max-width:40ch;margin:14px 0 16px}
.ftr h4{font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:6px 0 12px}
.ftr ul{list-style:none;padding:0;margin:0}.ftr li{margin:7px 0}
.ftr ul a{text-decoration:none;color:var(--fg2);font-size:15px}.ftr ul a:hover{color:var(--accent)}
.ftr-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;border-top:1px solid var(--line);padding:18px 24px 30px;font-size:13.5px;color:var(--muted)}

/* responsive */
@media (max-width:1024px){
  .grid-3,.tool-grid,.guides{grid-template-columns:repeat(2,1fr)}
  .topics{grid-template-columns:repeat(2,1fr)}.tools{grid-template-columns:repeat(2,1fr)}
  .values{grid-template-columns:repeat(2,1fr)}
  .post-grid{grid-template-columns:1fr}.post-side{display:none}
  .hero-in{grid-template-columns:1fr}
}
@media (max-width:760px){
  .menu-btn{display:grid}
  .nav{position:absolute;top:68px;left:0;right:0;flex-direction:column;gap:2px;margin:0;padding:10px 16px 16px;background:var(--bg2);border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);display:none}
  .nav.open{display:flex}
  .nav a{padding:12px 14px;border-radius:12px}
  .hide-sm{display:none}
  .grid-3,.tool-grid,.guides,.topics,.tools,.values,.two-col{grid-template-columns:1fr}
  .ftr-grid{grid-template-columns:1fr 1fr}.ftr-brand{grid-column:1/-1}
  .cta{flex-direction:column;align-items:flex-start}.cta .btn{margin-left:0}
  .guide-lg{flex-direction:column}.guide-lg img{width:100%}
  .filter-search{margin-left:0;width:100%}.filter-search input{width:100%}
  .share{margin-left:0}
  .container{padding:0 18px}.block{padding:30px 18px}
  .prose{font-size:17px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}