/* Blog: article pages and the blog index. Builds on site.css and landing.css. */
.js-on .rv { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s cubic-bezier(.2,.8,.2,1); }
.js-on .rv.seen { opacity: 1; transform: none; }

/* reading progress */
.bl-progress { position: fixed; left: 0; right: 0; top: 0; height: 4px; z-index: 60; pointer-events: none; }
.bl-progress i { display: block; height: 100%; background: linear-gradient(90deg, var(--green), var(--green-l), var(--yellow)); transform: scaleX(0); transform-origin: left; }

/* hero */
.bl-hero { padding-block: 44px 56px; border-bottom: 1px solid var(--line-2); }
.bl-hero-in { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 40px; align-items: center; }
.bl-hero-t { display: flex; flex-direction: column; gap: 16px; min-width: 0; }
.bl-crumbs { display: flex; gap: 8px; flex-wrap: wrap; font-size: 13.5px; color: var(--muted); }
.bl-crumbs a { color: var(--muted); text-decoration: none; } .bl-crumbs a:hover { color: var(--green); }
.bl-kicker { align-self: flex-start; font-size: 12.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; border-radius: 99px; padding: 6px 14px; border: 1.5px solid var(--green); background: var(--green-t); color: var(--green); animation: blIn .6s ease both; }
.bl-kicker.yellow { border-color: #E0A100; background: var(--yellow-t); color: #6B5200; } .bl-kicker.lav { border-color: #7B61FF; background: var(--lav-t); color: #4B36C9; }
.bl-h1 { font-family: var(--display); font-weight: 800; font-size: clamp(34px, 5vw, 60px); letter-spacing: -0.04em; line-height: 1.02; margin: 0; text-wrap: balance; animation: blIn .7s .05s cubic-bezier(.2,.8,.2,1) both; }
.bl-dek { max-width: 36em; animation: blIn .7s .12s ease both; }
.bl-meta { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; font-size: 14px; color: var(--muted); animation: blIn .7s .18s ease both; }
.bl-meta b { display: block; color: var(--ink); font-size: 14.5px; } .bl-meta small { display: block; font-size: 12.5px; }
.bl-av { width: 38px; height: 38px; border-radius: 50%; background: var(--green); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px; flex: none; }
.bl-av.lg { width: 54px; height: 54px; font-size: 18px; }
.bl-dot { width: 4px; height: 4px; border-radius: 50%; background: var(--line); }
.bl-kw { display: flex; flex-wrap: wrap; gap: 6px; }
.bl-kw span { font-size: 12.5px; font-weight: 600; color: var(--ink-2); background: #fff; border: 1px solid var(--line); border-radius: 99px; padding: 4px 11px; animation: blPop .45s cubic-bezier(.2,1.4,.4,1) both; animation-delay: calc(.3s + var(--i) * 60ms); }
@keyframes blIn { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes blPop { from { opacity: 0; transform: scale(.85); } to { opacity: 1; transform: none; } }
.bl-tldr { background: var(--ink); color: #fff; border-radius: 24px; padding: 24px; box-shadow: 10px 10px 0 var(--yellow); animation: blIn .8s .2s cubic-bezier(.2,.8,.2,1) both; position: relative; }
.bl-tldr-h { display: flex; align-items: center; gap: 8px; font-size: 12.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--yellow); margin-bottom: 12px; }
.bl-pulse { width: 9px; height: 9px; border-radius: 50%; background: var(--green-l); box-shadow: 0 0 0 0 rgba(91,195,106,.6); animation: blPulse 1.8s infinite; }
@keyframes blPulse { 70% { box-shadow: 0 0 0 10px rgba(91,195,106,0); } 100% { box-shadow: 0 0 0 0 rgba(91,195,106,0); } }
.bl-tldr ol { margin: 0; padding: 0; list-style: none; counter-reset: t; display: flex; flex-direction: column; gap: 12px; }
.bl-tldr li { counter-increment: t; display: flex; gap: 12px; font-size: 15px; line-height: 1.5; color: #DDE5E0; animation: blIn .5s ease both; animation-delay: calc(.5s + var(--i) * 180ms); }
.bl-tldr li::before { content: counter(t); flex: none; width: 24px; height: 24px; border-radius: 7px; background: #26312B; color: var(--yellow); font-weight: 700; font-size: 13px; display: flex; align-items: center; justify-content: center; margin-top: 1px; }
.bl-tldr li b { color: #fff; }
.bl-tldr-go { display: inline-block; margin-top: 16px; color: var(--green-l); font-weight: 700; text-decoration: none; }
.bl-tldr-go:hover { color: var(--yellow); }

/* three-column layout */
.bl-layout { display: grid; grid-template-columns: 220px minmax(0, 720px) 250px; gap: 40px; justify-content: center; padding-block: 48px 24px; align-items: start; }
.bl-toc, .bl-side { position: sticky; top: calc(var(--promo-h, 0px) + 92px); }
.bl-toc-in { display: flex; flex-direction: column; gap: 10px; font-size: 14px; }
.bl-toc-in > b { font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.bl-toc ol { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; border-left: 2px solid var(--line-2); }
.bl-toc a { display: block; padding: 6px 0 6px 14px; margin-left: -2px; border-left: 2px solid transparent; color: var(--muted); text-decoration: none; line-height: 1.35; transition: color .2s, border-color .2s, padding .2s; }
.bl-toc a:hover { color: var(--ink); }
.bl-toc a.on { color: var(--ink); font-weight: 600; border-left-color: var(--green); padding-left: 18px; }
.bl-toc-prog { height: 5px; border-radius: 99px; background: var(--line-2); overflow: hidden; margin-top: 6px; }
.bl-toc-prog i { display: block; height: 100%; background: var(--green); transform: scaleX(0); transform-origin: left; }
.bl-toc-left { font-family: var(--mono); font-size: 12px; color: var(--muted); }

/* article typography */
.bl-article { min-width: 0; font-size: 18px; line-height: 1.75; color: #1D2621; }
.bl-article > * + * { margin-top: 22px; }
.bl-article :where(p) { margin: 0; }
.bl-article > h2 + *, .bl-article > h3 + * { margin-top: 12px; }
.bl-article a.btn, .bl-article a.btn:hover { color: #fff; text-decoration: none; }
.bl-article h2 { font-size: clamp(26px, 3vw, 34px); font-weight: 800; margin-top: 56px; scroll-margin-top: 130px; position: relative; }
.bl-article h2::before { content: ""; display: block; width: 44px; height: 6px; border-radius: 99px; background: var(--yellow); margin-bottom: 14px; transform-origin: left; }
.js-on .bl-article h2.rv::before { transform: scaleX(0); transition: transform .6s .2s cubic-bezier(.2,.8,.2,1); }
.js-on .bl-article h2.rv.seen::before { transform: none; }
.bl-article h3 { font-size: 22px; font-weight: 700; margin-top: 36px; letter-spacing: -0.02em; }
.bl-article a { color: var(--green); text-decoration-thickness: 1.5px; text-underline-offset: 3px; }
.bl-article code { font-family: var(--mono); font-size: .85em; background: var(--mist-2); border-radius: 6px; padding: 1px 6px; }
.bl-list { padding-left: 0; list-style: none; display: flex; flex-direction: column; gap: 10px; }
.bl-list li { position: relative; padding-left: 30px; }
.bl-list li::before { content: ""; position: absolute; left: 4px; top: .62em; width: 10px; height: 10px; border-radius: 3px; background: var(--green-l); transform: rotate(45deg); }
.js-on .bl-list.rv li { opacity: 0; transform: translateX(-10px); transition: opacity .45s ease, transform .45s ease; transition-delay: calc(var(--i) * 90ms); }
.js-on .bl-list.rv.seen li { opacity: 1; transform: none; }
ol.bl-list { counter-reset: l; } ol.bl-list li::before { counter-increment: l; content: counter(l); transform: none; width: 22px; height: 22px; left: 0; top: .2em; border-radius: 7px; background: var(--ink); color: #fff; font-size: 13px; font-weight: 700; display: flex; align-items: center; justify-content: center; }

/* callouts */
.bl-callout { border-radius: 18px; padding: 18px 20px; background: var(--green-t); border: 1.5px solid var(--green-t2); font-size: 16.5px; line-height: 1.65; position: relative; overflow: hidden; }
.bl-callout.key { background: #fff; border: 2px solid var(--ink); box-shadow: 6px 6px 0 var(--green-l); }
.bl-callout.warn { background: var(--red-t); border-color: #F6CFCB; }
.bl-callout.story { background: var(--yellow-t); border-color: var(--yellow-t2); }
.bl-callout-h { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 6px; }
.bl-callout-k { font-size: 11.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; border-radius: 99px; padding: 3px 10px; background: var(--ink); color: var(--yellow); }
.bl-callout-h b { font-size: 17px; }

/* stats */
.bl-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; }
.bl-stat { border-top: 4px solid var(--ink); background: #fff; border-radius: 4px 4px 16px 16px; padding: 16px 14px; display: flex; flex-direction: column; gap: 4px; box-shadow: 0 10px 26px rgba(15,21,18,.06); }
.js-on .bl-stats.rv .bl-stat { opacity: 0; transform: translateY(16px); transition: opacity .5s ease, transform .5s ease; transition-delay: calc(var(--i) * 130ms); }
.js-on .bl-stats.rv.seen .bl-stat { opacity: 1; transform: none; }
.bl-stat:nth-child(2) { border-top-color: var(--green); } .bl-stat:nth-child(3) { border-top-color: var(--yellow); }
.bl-num { font-family: var(--display); font-weight: 800; font-size: 46px; line-height: 1; letter-spacing: -0.04em; }
.bl-stat span { font-size: 14.5px; line-height: 1.4; color: var(--ink-2); }
.bl-stat small { font-size: 12px; color: var(--muted); }

/* steps */
.bl-steps { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 0; position: relative; }
.bl-steps::before { content: ""; position: absolute; left: 19px; top: 20px; bottom: 20px; width: 2px; background: var(--line); }
.js-on .bl-steps.rv::after { content: ""; position: absolute; left: 19px; top: 20px; width: 2px; height: 0; background: var(--green); transition: height 1.6s cubic-bezier(.2,.8,.2,1) .2s; }
.js-on .bl-steps.rv.seen::after { height: calc(100% - 40px); }
.bl-steps li { display: flex; gap: 16px; padding: 10px 0; position: relative; z-index: 1; }
.js-on .bl-steps.rv li { opacity: 0; transform: translateY(12px); transition: opacity .5s ease, transform .5s ease; transition-delay: calc(.15s + var(--i) * 200ms); }
.js-on .bl-steps.rv.seen li { opacity: 1; transform: none; }
.bl-step-n { flex: none; width: 40px; height: 40px; border-radius: 12px; background: var(--ink); color: var(--yellow); font-family: var(--display); font-weight: 800; font-size: 18px; display: flex; align-items: center; justify-content: center; box-shadow: 0 0 0 6px var(--paper); }
.bl-steps li > div { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 14px 16px; flex: 1; min-width: 0; font-size: 16.5px; line-height: 1.6; transition: border-color .2s, transform .2s; }
.bl-steps li > div:hover { border-color: var(--green); transform: translateX(3px); }
.bl-steps b { display: block; font-size: 17px; margin-bottom: 2px; }
.bl-step-t { display: inline-block; margin-top: 8px; font-family: var(--mono); font-size: 12px; background: var(--green-t); color: var(--green-d); border-radius: 6px; padding: 2px 8px; }

/* comparison */
.bl-compare { margin: 32px 0 0; background: #fff; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; box-shadow: 0 18px 40px rgba(15,21,18,.07); }
.bl-compare figcaption { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; justify-content: space-between; padding: 14px 16px; border-bottom: 1px solid var(--line-2); background: #FAFBF9; font-size: 15px; }
.bl-cmp-tabs { display: inline-flex; gap: 4px; background: var(--mist-2); border-radius: 99px; padding: 4px; flex-wrap: wrap; }
.bl-cmp-tabs button { border: 0; background: none; border-radius: 99px; padding: 6px 12px; font: inherit; font-size: 13px; font-weight: 600; color: var(--ink-2); cursor: pointer; }
.bl-cmp-tabs button.on { background: var(--ink); color: #fff; }
.bl-cmp-diff { display: inline-flex; gap: 6px; align-items: center; font-size: 13.5px; color: var(--ink-2); cursor: pointer; }
.bl-cmp-diff input { accent-color: var(--green); width: 16px; height: 16px; }
.bl-cmp-wrap { overflow-x: auto; }
.bl-compare table { width: 100%; border-collapse: collapse; font-size: 15px; line-height: 1.4; }
.bl-compare th, .bl-compare td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--line-2); vertical-align: middle; }
.bl-compare thead th { font-size: 13px; color: var(--muted); background: #fff; position: sticky; top: 0; }
.bl-compare thead th[data-c="1"] { color: var(--green-d); }
.bl-compare tbody th { font-weight: 600; }
.bl-compare td[data-c="1"] { background: rgba(227,245,233,.45); }
.bl-compare tbody tr { transition: background .2s; }
.bl-compare tbody tr:hover { background: var(--mist); }
.js-on .bl-compare.rv tbody tr { opacity: 0; transform: translateX(-8px); transition: opacity .4s ease, transform .4s ease, background .2s; transition-delay: calc(.2s + var(--i) * 55ms); }
.js-on .bl-compare.rv.seen tbody tr { opacity: 1; transform: none; }
.bl-compare[data-view="0"] [data-c="1"], .bl-compare[data-view="1"] [data-c="0"] { display: none; }
.bl-compare.diff tr[data-same="true"] { display: none; }
.bl-yes, .bl-no { width: 24px; height: 24px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; color: #fff; background: var(--green); }
.bl-no { background: #C9D0CB; }
.bl-compare.seen .bl-yes { animation: blPop .4s cubic-bezier(.2,1.4,.4,1) both; animation-delay: .6s; }

/* checklist */
.bl-check { background: #fff; border: 2px solid var(--ink); border-radius: 22px; padding: 20px; box-shadow: 8px 8px 0 var(--yellow); }
.bl-check.complete { box-shadow: 8px 8px 0 var(--green-l); }
.bl-check-h { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.bl-check-h b { font-family: var(--display); font-size: 22px; letter-spacing: -0.02em; }
.bl-check-n { font-family: var(--mono); font-size: 13px; color: var(--muted); }
.bl-check-bar { height: 8px; border-radius: 99px; background: var(--line-2); overflow: hidden; margin: 12px 0 8px; }
.bl-check-bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--green), var(--green-l)); transition: width .4s cubic-bezier(.2,.8,.2,1); }
.bl-check ul { list-style: none; margin: 0; padding: 0; }
.bl-check li { border-top: 1px solid var(--line-2); transition: background .2s; border-radius: 10px; }
.bl-check li.on { background: var(--green-t); }
.bl-check label { display: flex; gap: 12px; align-items: flex-start; padding: 11px 8px; cursor: pointer; font-size: 16px; line-height: 1.45; }
.bl-check input { position: absolute; opacity: 0; pointer-events: none; }
.bl-box { flex: none; width: 24px; height: 24px; border-radius: 7px; border: 2px solid var(--line); background: #fff; color: transparent; display: inline-flex; align-items: center; justify-content: center; transition: all .18s; margin-top: 1px; }
.bl-check input:checked + .bl-box { background: var(--green); border-color: var(--green); color: #fff; transform: scale(1.08); }
.bl-check input:focus-visible + .bl-box { outline: 3px solid var(--green-t2); }
.bl-check li.on b { text-decoration: line-through; text-decoration-color: var(--green); color: var(--green-d); }
.bl-check small { display: block; color: var(--muted); font-size: 14px; }
.bl-check-done { margin: 12px 0 0; font-weight: 700; color: var(--green-d); }
.bl-confetti { position: fixed; z-index: 80; width: 8px; height: 12px; border-radius: 2px; pointer-events: none; animation: blConf 1.2s cubic-bezier(.2,.7,.4,1) forwards; }
@keyframes blConf { to { transform: translate(var(--x), calc(var(--y) * -1 + 120px)) rotate(var(--r)); opacity: 0; } 30% { transform: translate(calc(var(--x) * .5), var(--y)) rotate(calc(var(--r) * .4)); opacity: 1; } }

/* robots.txt simulator */
.bl-sim { background: var(--ink); color: #fff; border-radius: 22px; padding: 20px; }
.bl-sim-h b { display: block; font-family: var(--display); font-size: 21px; letter-spacing: -0.02em; }
.bl-sim-h span { display: block; color: #9FB0A6; font-size: 15px; margin-top: 4px; }
.bl-sim-body { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; margin-top: 16px; }
.bl-sim-bots { display: flex; flex-direction: column; gap: 6px; }
.bl-bot { display: flex; align-items: center; gap: 10px; background: #1A2420; border-radius: 12px; padding: 8px 10px; cursor: pointer; font-size: 14px; transition: background .2s; }
.bl-bot:hover { background: #222E28; }
.bl-bot input { position: absolute; opacity: 0; pointer-events: none; }
.bl-tgl { flex: none; width: 36px; height: 20px; border-radius: 99px; background: #4A2723; position: relative; transition: background .2s; }
.bl-tgl::after { content: ""; position: absolute; left: 3px; top: 3px; width: 14px; height: 14px; border-radius: 50%; background: #fff; transition: transform .2s; }
.bl-bot input:checked + .bl-tgl { background: var(--green); }
.bl-bot input:checked + .bl-tgl::after { transform: translateX(16px); }
.bl-bot input:focus-visible + .bl-tgl { outline: 3px solid var(--green-l); }
.bl-bot .mono { flex: 1; min-width: 0; font-size: 13px; }
.bl-bot em { font-style: normal; font-size: 11.5px; color: #8FA197; }
.bl-sim-out { display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.bl-robots { margin: 0; background: #0A0F0C; border: 1px solid #26312B; border-radius: 12px; padding: 12px 14px; font-family: var(--mono); font-size: 12.5px; line-height: 1.6; color: #C9D3CD; white-space: pre-wrap; min-height: 120px; }
.bl-robots .k { color: #8FA197; } .bl-robots .n { color: #FF9C93; } .bl-robots .y { color: #7BE08F; }
.bl-sim-eng { display: flex; flex-wrap: wrap; gap: 6px; }
.bl-sim-eng span { font-size: 13px; font-weight: 700; border-radius: 99px; padding: 5px 12px; background: #1E4D33; color: #9FF0AE; transition: background .25s, color .25s; }
.bl-sim-eng span::before { content: "✓ "; }
.bl-sim-eng span.n { background: #5A1F1B; color: #FFC9C3; text-decoration: line-through; }
.bl-sim-eng span.n::before { content: "✕ "; }
.bl-sim-eng span.pop { animation: blPop .4s cubic-bezier(.2,1.4,.4,1); }
.bl-sim-note { margin: 0; font-size: 14.5px; line-height: 1.5; border-radius: 12px; padding: 10px 12px; background: #1A2420; color: #DDE5E0; }
.bl-sim-note.bad { background: #3A1715; color: #FFD5D0; } .bl-sim-note.mid { background: #3A3310; color: #FFEFB3; } .bl-sim-note.good { background: #12301F; color: #C6F2CF; }
.bl-sim-note b { color: #fff; }

/* flip cards */
.bl-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; perspective: 1200px; }
.bl-flip { border: 0; padding: 0; background: none; font: inherit; text-align: left; cursor: pointer; min-height: 210px; }
.bl-flip-in { position: relative; display: block; height: 100%; min-height: 210px; transition: transform .6s cubic-bezier(.2,.8,.2,1); transform-style: preserve-3d; }
.bl-flip.flipped .bl-flip-in { transform: rotateY(180deg); }
.bl-front, .bl-back { position: absolute; inset: 0; border-radius: 18px; padding: 16px; display: flex; flex-direction: column; gap: 8px; backface-visibility: hidden; -webkit-backface-visibility: hidden; font-size: 15px; line-height: 1.5; }
.bl-front { background: var(--red-t); border: 1.5px solid #F6CFCB; }
.bl-front b { font-size: 17px; line-height: 1.35; color: var(--ink); }
.bl-back { background: var(--green-t); border: 1.5px solid var(--green-t2); transform: rotateY(180deg); color: var(--ink); }
.bl-flip-k { font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--red); }
.bl-back .bl-flip-k { color: var(--green-d); }
.bl-flip-hint { margin-top: auto; font-size: 12.5px; color: var(--muted); }
.bl-flip:hover .bl-front { transform: translateY(-3px); }
.js-on .bl-cards.rv .bl-flip { opacity: 0; transform: translateY(14px) rotate(-1deg); transition: opacity .5s ease, transform .5s ease; transition-delay: calc(var(--i) * 120ms); }
.js-on .bl-cards.rv.seen .bl-flip { opacity: 1; transform: none; }

/* quote */
.bl-quote { margin: 32px 0 0; padding: 8px 0 8px 24px; border-left: 6px solid var(--yellow); }
.bl-quote p { font-family: var(--display); font-size: clamp(22px, 2.6vw, 28px); font-weight: 700; line-height: 1.3; letter-spacing: -0.02em; color: var(--ink); }
.bl-quote cite { display: block; margin-top: 10px; font-style: normal; font-size: 14px; color: var(--muted); }

/* CTA */
.bl-cta { position: relative; overflow: hidden; background: var(--green-t); border: 2px solid var(--green); border-radius: 22px; padding: 22px; display: flex; flex-direction: column; gap: 8px; }
.bl-cta-glow { position: absolute; width: 260px; height: 260px; right: -80px; top: -120px; border-radius: 50%; background: radial-gradient(circle, rgba(255,216,77,.7), transparent 70%); animation: blGlow 6s ease-in-out infinite; }
@keyframes blGlow { 50% { transform: translate(-40px, 30px) scale(1.15); } }
.bl-cta > *:not(.bl-cta-glow) { position: relative; }
.bl-cta-k { align-self: flex-start; font-size: 11.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--green-d); }
.bl-cta b { font-family: var(--display); font-size: 24px; letter-spacing: -0.02em; line-height: 1.15; }
.bl-cta p { font-size: 16px; line-height: 1.55; color: var(--ink-2); }
.bl-cta .btn { align-self: flex-start; margin-top: 4px; }
.bl-cta-form { display: flex; gap: 8px; background: #fff; border: 2px solid var(--ink); border-radius: 14px; padding: 6px; margin-top: 6px; max-width: 480px; }
.bl-cta-form input:not([type=hidden]) { flex: 1; min-width: 0; border: 0; outline: 0; font-size: 16px; padding: 0 10px; background: transparent; }
.bl-cta-form .btn { margin: 0; min-height: 44px; padding: 0 16px; font-size: 15px; }

/* right rail */
.bl-side-in { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 18px; display: flex; flex-direction: column; gap: 8px; box-shadow: 0 16px 36px rgba(15,21,18,.08); }
.bl-side-in b { font-family: var(--display); font-size: 20px; line-height: 1.15; letter-spacing: -0.02em; }
.bl-side-in p { margin: 0; color: var(--muted); font-size: 14px; }
.bl-side-ring { position: relative; width: 104px; height: 104px; margin: 6px auto; }
.bl-side-ring svg, .bl-fa-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.bl-side-ring circle, .bl-fa-ring circle { fill: none; stroke-width: 11; stroke: var(--line-2); }
.bl-side-ring circle.v, .bl-fa-ring circle.v { stroke: #E0A100; stroke-linecap: round; stroke-dasharray: 314; stroke-dashoffset: 314; transition: stroke-dashoffset 1.4s cubic-bezier(.2,.8,.2,1) .3s; }
.bl-side-in.seen circle.v { stroke-dashoffset: 88; animation: blRing 7s ease-in-out 2s infinite; }
@keyframes blRing { 50% { stroke-dashoffset: 40; stroke: var(--green); } }
.bl-side-ring span { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 28px; font-weight: 500; }
.bl-side-in form { display: flex; flex-direction: column; gap: 8px; }
.bl-side-in input:not([type=hidden]) { border: 1.5px solid var(--line); border-radius: 10px; min-height: 42px; padding: 0 12px; font: inherit; font-size: 15px; }
.bl-side-in input:focus { outline: 3px solid var(--green-t2); border-color: var(--green); }

/* FAQ, sources, end */
.bl-faq { margin-top: 56px; }
.bl-faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.bl-faq summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 16px; padding: 14px 0; font-weight: 700; font-size: 18px; }
.bl-faq summary::-webkit-details-marker { display: none; }
.bl-faq summary::after { content: "+"; flex: none; width: 28px; height: 28px; border-radius: 50%; background: var(--mist-2); display: inline-flex; align-items: center; justify-content: center; font-weight: 700; transition: transform .25s, background .25s; }
.bl-faq details[open] summary::after { transform: rotate(45deg); background: var(--yellow); }
.bl-faq details p { padding-bottom: 14px; font-size: 16.5px; color: var(--ink-2); }
.bl-sources { margin-top: 36px; font-size: 14px; background: var(--mist); border-radius: 16px; padding: 16px 18px; }
.bl-sources b { font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.bl-sources ol { margin: 8px 0 0; padding-left: 18px; display: flex; flex-direction: column; gap: 6px; line-height: 1.45; }
.bl-end { margin-top: 36px; display: flex; flex-direction: column; gap: 16px; }
.bl-author { display: flex; gap: 14px; align-items: flex-start; border: 1px solid var(--line); border-radius: 18px; padding: 16px; }
.bl-author p { margin: 4px 0 0; font-size: 15px; line-height: 1.55; color: var(--ink-2); }
.bl-share { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: 14px; }
.bl-share > span { font-weight: 700; color: var(--muted); margin-right: 4px; }
.bl-sh { border: 1px solid var(--line); background: #fff; border-radius: 99px; padding: 7px 14px; font: inherit; font-size: 14px; font-weight: 600; color: var(--ink); text-decoration: none; cursor: pointer; transition: transform .15s, border-color .15s; }
.bl-sh:hover { transform: translateY(-2px); border-color: var(--ink); color: var(--ink); }
.bl-final { margin-bottom: 72px; }

/* cards, index */
.bl-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 24px; }
.bl-card { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; background: #fff; text-decoration: none; color: var(--ink); transition: transform .25s cubic-bezier(.2,.8,.2,1), box-shadow .25s, border-color .25s; }
.js-on .bl-card { opacity: 0; transform: translateY(18px); }
.js-on .bl-card.seen { opacity: 1; transform: none; transition-delay: calc(var(--i) * 70ms); }
.bl-card:hover { transform: translateY(-6px); box-shadow: 0 20px 40px rgba(15,21,18,.12); border-color: var(--ink-2); color: var(--ink); }
.bl-card-art { position: relative; height: 150px; display: flex; flex-direction: column; justify-content: flex-end; padding: 16px; background: var(--green); color: #fff; overflow: hidden; }
.bl-card-art::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px); background-size: 24px 24px; transition: transform .6s; }
.bl-card:hover .bl-card-art::before { transform: scale(1.15) rotate(2deg); }
.bl-card-art.yellow { background: var(--yellow); color: var(--ink); } .bl-card-art.lav { background: #7B61FF; }
.bl-card-n { position: relative; font-size: 46px; line-height: 1; } .bl-card-l { position: relative; font-size: 13px; opacity: .85; }
.bl-card-b { display: flex; flex-direction: column; gap: 8px; padding: 16px; flex: 1; }
.bl-card-c { font-size: 12.5px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: var(--green); }
.bl-card-b b { font-family: var(--display); font-size: 20px; line-height: 1.2; letter-spacing: -0.02em; }
.bl-card-d { font-size: 14.5px; color: var(--muted); line-height: 1.5; }
.bl-card-f { margin-top: auto; display: flex; justify-content: space-between; font-size: 13px; color: var(--muted); padding-top: 8px; }
.bl-card-go { font-weight: 700; color: var(--ink); transition: transform .2s; } .bl-card:hover .bl-card-go { transform: translateX(4px); }
.bl-ix-hero { border-bottom: 1px solid var(--line-2); }
.bl-ix-tools { display: flex; flex-direction: column; gap: 14px; align-items: center; width: 100%; }
.bl-search { display: flex; align-items: center; gap: 10px; width: 100%; max-width: 520px; background: #fff; border: 2px solid var(--ink); border-radius: 14px; padding: 0 14px; color: var(--muted); }
.bl-search input { flex: 1; min-width: 0; border: 0; outline: 0; min-height: 50px; font-size: 17px; background: transparent; color: var(--ink); }
#blCats .chip.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.bl-feature { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); border: 2px solid var(--ink); border-radius: 26px; overflow: hidden; text-decoration: none; color: var(--ink); background: #fff; box-shadow: 10px 10px 0 var(--yellow); transition: transform .3s, box-shadow .3s; }
.bl-feature:hover { transform: translate(-3px, -3px); box-shadow: 14px 14px 0 var(--yellow); color: var(--ink); }
.bl-feature-art { background: var(--ink); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px; padding: 32px; position: relative; overflow: hidden; }
.bl-feature-art::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 32px 32px; }
.bl-fa-ring { position: relative; width: 150px; height: 150px; }
.bl-fa-ring circle { stroke: #26312B; }
.bl-feature.seen .bl-fa-ring circle.v { stroke-dashoffset: 60; stroke: var(--green-l); }
.bl-fa-ring b { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 40px; font-weight: 500; }
.bl-fa-chips { position: relative; display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.bl-fa-chips span { font-size: 12.5px; font-weight: 600; color: var(--yellow); border: 1px solid #3B463F; border-radius: 99px; padding: 4px 10px; animation: blPop .45s cubic-bezier(.2,1.4,.4,1) both; animation-delay: calc(.4s + var(--i) * 90ms); }
.bl-feature-b { display: flex; flex-direction: column; gap: 12px; padding: 32px; justify-content: center; }
.bl-feature-b b { font-family: var(--display); font-size: clamp(26px, 3vw, 36px); line-height: 1.08; letter-spacing: -0.03em; }

/* responsive */
@media (max-width: 1240px) { .bl-layout { grid-template-columns: 200px minmax(0, 1fr); } .bl-side { display: none; } }
@media (max-width: 980px) {
  .bl-hero-in { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .bl-layout { grid-template-columns: minmax(0, 1fr); padding-top: 28px; }
  .bl-toc { position: static; display: none; }
  .bl-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bl-feature { grid-template-columns: minmax(0, 1fr); }
  .bl-sim-body { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 700px) {
  .bl-article { font-size: 17px; }
  .bl-cards { grid-template-columns: minmax(0, 1fr); }
  .bl-flip, .bl-flip-in { min-height: 170px; }
  .bl-grid { grid-template-columns: minmax(0, 1fr); }
  .bl-cmp-all { display: none; }
  .bl-tldr { box-shadow: 6px 6px 0 var(--yellow); }
  .bl-feature-b, .bl-feature-art { padding: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  .js-on .rv, .js-on .bl-card, .js-on .bl-list.rv li, .js-on .bl-steps.rv li, .js-on .bl-compare.rv tbody tr, .js-on .bl-cards.rv .bl-flip, .js-on .bl-stats.rv .bl-stat { opacity: 1 !important; transform: none !important; transition: none !important; }
  .bl-kicker, .bl-h1, .bl-dek, .bl-meta, .bl-kw span, .bl-tldr, .bl-tldr li, .bl-cta-glow, .bl-pulse, .bl-fa-chips span { animation: none !important; }
}

/* sortable table */
.bl-table { margin: 32px 0 0; background: #fff; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; box-shadow: 0 18px 40px rgba(15,21,18,.07); }
.bl-table figcaption { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; justify-content: space-between; padding: 14px 16px; border-bottom: 1px solid var(--line-2); background: #FAFBF9; font-size: 15px; }
.bl-table figcaption > span { font-size: 13px; color: var(--muted); }
.bl-tfilters { display: flex; flex-wrap: wrap; gap: 12px; }
.bl-tfilters label { display: inline-flex; gap: 6px; align-items: center; font-size: 13.5px; color: var(--ink-2); cursor: pointer; }
.bl-tfilters input { accent-color: var(--green); width: 16px; height: 16px; }
.bl-table table { width: 100%; border-collapse: collapse; font-size: 14.5px; line-height: 1.4; min-width: 720px; }
.bl-table th, .bl-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--line-2); vertical-align: middle; }
.bl-table thead th { background: #fff; padding: 0; }
.bl-table thead button { width: 100%; display: flex; gap: 4px; align-items: center; justify-content: space-between; border: 0; background: none; padding: 10px 12px; font: inherit; font-size: 12.5px; font-weight: 700; color: var(--muted); cursor: pointer; text-align: left; }
.bl-table thead button:hover, .bl-table thead button.on { color: var(--ink); background: var(--mist); }
.bl-table thead button span { opacity: .5; } .bl-table thead button.on span { opacity: 1; color: var(--green); }
.bl-table tbody th { font-weight: 700; position: sticky; left: 0; background: #fff; z-index: 1; }
.bl-table tbody tr.hi th, .bl-table tbody tr.hi td { background: var(--green-t); }
.bl-table tbody tr:hover td, .bl-table tbody tr:hover th { background: var(--mist); }
.bl-table tbody tr.flash { animation: blRow .5s ease; animation-delay: calc(var(--i) * 30ms); }
@keyframes blRow { from { opacity: .2; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.js-on .bl-table.rv tbody tr { opacity: 0; transform: translateX(-8px); transition: opacity .4s ease, transform .4s ease; transition-delay: calc(.2s + var(--i) * 60ms); }
.js-on .bl-table.rv.seen tbody tr { opacity: 1; transform: none; }

/* quiz */
.bl-quiz { background: var(--lav-t); border: 2px solid #7B61FF; border-radius: 22px; padding: 20px; display: flex; flex-direction: column; gap: 14px; }
.bl-quiz-h { display: flex; flex-direction: column; gap: 6px; align-items: flex-start; }
.bl-quiz-h b { font-family: var(--display); font-size: 22px; letter-spacing: -0.02em; line-height: 1.2; }
.bl-q { border: 0; margin: 0; padding: 0; }
.bl-q legend { font-weight: 700; font-size: 16px; margin-bottom: 8px; padding: 0; }
.bl-q div { display: flex; flex-wrap: wrap; gap: 8px; }
.bl-q button { border: 1.5px solid #CFC6FF; background: #fff; border-radius: 99px; padding: 8px 14px; font: inherit; font-size: 14.5px; font-weight: 600; color: var(--ink); cursor: pointer; transition: all .15s; }
.bl-q button:hover { border-color: #7B61FF; transform: translateY(-1px); }
.bl-q button.on { background: #7B61FF; border-color: #7B61FF; color: #fff; }
.bl-quiz-out { background: #fff; border-radius: 16px; padding: 16px; display: flex; flex-direction: column; gap: 6px; align-items: flex-start; }
.bl-quiz-out.pop { animation: blPop .45s cubic-bezier(.2,1.4,.4,1); }
.bl-quiz-out b { font-family: var(--display); font-size: 21px; } .bl-quiz-out p { font-size: 15.5px; line-height: 1.55; color: var(--ink-2); }

/* code */
.bl-code { margin: 28px 0 0; background: #0F1512; border-radius: 18px; overflow: hidden; }
.bl-code figcaption { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 10px 14px; background: #1A2420; color: #DDE5E0; font-size: 14px; }
.bl-copy { border: 1px solid #3B463F; background: none; color: var(--yellow); border-radius: 8px; padding: 4px 12px; font: inherit; font-size: 13px; font-weight: 700; cursor: pointer; }
.bl-copy:hover { background: #26312B; }
.bl-code pre { margin: 0; padding: 14px 16px; overflow-x: auto; font-family: var(--mono); font-size: 13.5px; line-height: 1.6; color: #C9F2D2; }
.bl-code p { margin: 0; padding: 0 16px 14px; color: #9FB0A6; font-size: 14px; }

/* before / after */
.bl-ba { border: 1px solid var(--line); border-radius: 20px; overflow: hidden; background: #fff; box-shadow: 0 14px 34px rgba(15,21,18,.07); }
.bl-ba-h { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; padding: 12px 16px; background: #FAFBF9; border-bottom: 1px solid var(--line-2); }
.bl-ba-tg { display: inline-flex; gap: 4px; background: var(--mist-2); border-radius: 99px; padding: 4px; }
.bl-ba-tg button { border: 0; background: none; border-radius: 99px; padding: 6px 14px; font: inherit; font-size: 13.5px; font-weight: 700; color: var(--ink-2); cursor: pointer; }
.bl-ba-tg button.on { background: var(--ink); color: #fff; }
.bl-ba-panes { display: grid; }
.bl-ba-p { grid-area: 1 / 1; padding: 18px; font-size: 16.5px; line-height: 1.65; transition: opacity .4s ease, transform .4s ease; }
.bl-ba-p small { display: block; margin-top: 10px; font-size: 13.5px; font-weight: 600; }
.bl-ba-p.before { background: var(--red-t); } .bl-ba-p.before small { color: var(--red); }
.bl-ba-p.after { background: var(--green-t); opacity: 0; transform: translateX(16px); pointer-events: none; } .bl-ba-p.after small { color: var(--green-d); }
.bl-ba[data-show="after"] .bl-ba-p.after { opacity: 1; transform: none; pointer-events: auto; }
.bl-ba[data-show="after"] .bl-ba-p.before { opacity: 0; transform: translateX(-16px); pointer-events: none; }
.bl-table table { min-width: 980px; }
.bl-table td { min-width: 110px; }
.bl-table td:nth-child(4), .bl-table td:last-child { min-width: 210px; }
.bl-table tbody th { min-width: 150px; }
.bl-table .bl-cmp-wrap { position: relative; }
.bl-table figcaption::after { content: "Scroll sideways for more →"; flex-basis: 100%; font-size: 12px; color: var(--muted); }
.bl-article .bl-code code { background: none; padding: 0; border-radius: 0; font-size: inherit; color: inherit; }