/* Oriel blog: index, article pages, diagrams. Built by tools/blog_build.py. Every class is prefixed ob-.
   Uses the site tokens, so dark mode follows dark.css; figures stay light in both themes (site rule). */

/* ---------- index ---------- */
.ob-hero-x{background:linear-gradient(180deg,var(--bg) 0%,var(--tint,#E9F0EB) 100%);position:relative;overflow:hidden}
.ob-hero-x h1{max-width:18ch}
.ob-hero-x h1 em{font-style:italic}
.ob-pb-link{display:inline-flex;gap:8px;margin-top:30px;font:500 12px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--acc);transition:opacity .15s}
.ob-pb-link:hover{opacity:.75}
.ob-filters{padding:30px 36px 26px}
.ob-frow{display:flex;justify-content:space-between;align-items:center;gap:20px}
.ob-frow .psearch{flex:1}
.ob-frow .pcount{margin:0;white-space:nowrap}
.ob-chips-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.ob-chips-row .fchip{height:34px;padding:0 14px;cursor:pointer}
.ob-chips-row .fchip:not(.on){background:none}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.ob-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line);clip-path:inset(0 1px 0 0)}
.ob-card{position:relative;display:flex;flex-direction:column;padding:32px 30px 32px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);transition:background .2s}
.ob-card:hover{background:var(--surface)}
.ob-card[hidden]{display:none}
.ob-thumb{display:block;overflow:hidden;border:1px solid var(--line-2);aspect-ratio:1200/705;background:#EEF0EC;transition:border-color .2s}
.ob-card.big .ob-thumb{aspect-ratio:1200/630}
.ob-thumb img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.ob-card:hover .ob-thumb{border-color:var(--line-3)}
.ob-card:hover .ob-thumb img{transform:scale(1.02)}
.ob-card .pmeta{margin-top:22px}
.ob-card h3{font-family:var(--sans);font-weight:500;font-size:20px;line-height:1.32;letter-spacing:-.01em;margin-top:14px;color:var(--fg)}
.ob-card h3 a::after{content:"";position:absolute;inset:0;z-index:1}
.ob-card h3 a:focus-visible{outline:none}
.ob-card:has(h3 a:focus-visible){outline:2px solid var(--acc);outline-offset:-2px}
.ob-card.big h3{font-family:var(--serif);font-weight:400;font-size:30px;line-height:1.06;letter-spacing:-.025em}
.ob-desc{font-size:15px;line-height:1.6;color:var(--mut);margin-top:10px}
.ob-auth{display:flex;align-items:center;gap:12px;margin-top:22px}
.ob-auth img{width:44px;height:44px;object-fit:cover;flex:none}
.ob-auth b{display:flex;align-items:center;gap:7px;font-weight:500;font-size:14.5px;color:var(--fg)}
.ob-auth span{display:block;font-size:13px;color:var(--mut);margin-top:2px}
.ob-ai{display:inline-grid;place-items:center;height:17px;padding:0 5px;font:500 9.5px/1 var(--mono);letter-spacing:.08em;font-style:normal;color:var(--acc);border:1px solid color-mix(in srgb,var(--acc) 45%,transparent);vertical-align:middle}
.ob-read{margin-top:auto;width:100%;height:40px;--bc:var(--line-3)}
.ob-card:not(.big) .ob-auth{margin-bottom:26px}
.ob-card:hover .ob-read{background:var(--bg-2)}
.ob-more{position:relative;z-index:2;margin-top:auto;padding-top:22px;align-self:flex-end;font:500 11.5px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--acc)}
#ob-empty button{color:var(--acc);text-decoration:underline;text-underline-offset:3px;background:none;border:0;cursor:pointer;font:inherit}

/* playbook block */
.ob-pb{padding:72px 36px}
.ob-pb-in{border:1px solid var(--line-2);background:linear-gradient(160deg,var(--tint,#E9F0EB),var(--bg) 70%);padding:0 56px}
.ob-tools{padding:30px 0 32px;border-bottom:1px solid var(--line-2);text-align:center}
.ob-tools .cap{display:block;color:var(--mut);margin-bottom:16px}
.ob-logos{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}
.ob-logos span{width:40px;height:40px;display:grid;place-items:center;border:1px solid var(--line-2);background:#fff;overflow:hidden}
.ob-logos img{width:22px;height:22px;object-fit:contain;filter:grayscale(1);opacity:.85;transition:filter .2s,opacity .2s}
.ob-logos span:hover img{filter:none;opacity:1}
.ob-pb-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:56px;padding:52px 0 56px}
.ob-pb-k{color:var(--acc);display:block}
.ob-faces{display:flex;align-items:center;gap:4px;margin-top:20px}
.ob-faces img{width:52px;height:52px;object-fit:cover}
.ob-faces span{margin-left:14px;font-size:14px;color:var(--fg-2);line-height:1.4}
.ob-pb h2{font-family:var(--serif);font-weight:400;font-size:54px;line-height:1.02;letter-spacing:-.035em}
.ob-pb h2 span{color:var(--acc)}
.ob-pb-l{font-size:16px;line-height:1.65;color:var(--fg-2);margin-top:20px;max-width:52ch}
.ob-pb-list{list-style:none;margin-top:22px;display:flex;flex-direction:column;gap:12px}
.ob-pb-list li{position:relative;padding-left:26px;font-size:15.5px;color:var(--fg)}
.ob-pb-list li::before{content:"\2197";position:absolute;left:0;top:0;color:var(--acc);font-size:14px}
.ob-pb-form{border-left:1px solid var(--line-2);padding-left:44px}
.ob-pb-form h3{font-family:var(--serif);font-weight:400;font-size:30px;letter-spacing:-.02em}
.ob-pb-form form{display:flex;flex-direction:column;gap:18px;margin-top:22px}
.ob-pb-form label span{display:block;font-size:14px;color:var(--fg);margin-bottom:8px}
.ob-pb-form input:not(.hp){width:100%;height:50px;padding:0 16px;border:1px solid var(--line-3);background:var(--surface);font:inherit;font-size:15px;color:var(--fg);outline:0;transition:border-color .15s}
.ob-pb-form input:focus{border-color:var(--acc)}
.ob-pb-form small{display:block;font-size:13px;color:var(--mut);margin-top:8px}
.ob-pb-form .btn{align-self:flex-start;height:44px;padding:0 22px}
.ob-pb-form .fine{font-size:13px;color:var(--mut)}
.ob-pb-form .fine a{color:var(--acc);text-decoration:underline;text-underline-offset:3px}
.ob-pb-form .hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.ob-pb-form .sub-msg{margin-top:18px;font-size:15px;color:var(--acc)}
.ob-pb-form .sub-msg.err{color:#A3362B}

/* ---------- article ---------- */
.ob-post{display:grid;grid-template-columns:290px minmax(0,1fr);gap:64px;padding:56px 36px 40px;align-items:start}
.ob-side{position:sticky;top:92px;align-self:start}
.ob-side-in{display:flex;flex-direction:column;gap:28px}
.ob-toc{border-top:1px solid var(--line-2);padding-top:18px}
.ob-toc ol{list-style:none;margin-top:16px;max-height:calc(100vh - 470px);min-height:160px;overflow-y:auto;scrollbar-width:thin;border-left:1px solid var(--line);
  -webkit-mask-image:linear-gradient(180deg,#000 85%,transparent);mask-image:linear-gradient(180deg,#000 85%,transparent);padding-bottom:22px}
.ob-toc a{display:block;padding:7px 0 7px 14px;margin-left:-1px;border-left:2px solid transparent;font-size:14px;line-height:1.4;color:var(--mut);transition:color .15s,border-color .15s}
.ob-toc a:hover{color:var(--fg)}
.ob-toc a.on{color:var(--acc);border-left-color:var(--acc)}
.ob-side-cta{border:1px solid var(--line-2);padding:26px 24px;background:var(--surface)}
.ob-side-cta .cap,.ob-cta .cap,.ob-cta-in .cap{color:var(--acc)}
.ob-side-cta h3{font-family:var(--serif);font-weight:400;font-size:28px;line-height:1.04;letter-spacing:-.025em;margin-top:14px}
.ob-side-cta p{font-size:14px;line-height:1.6;color:var(--mut);margin:12px 0 20px}
.ob-art{min-width:0;max-width:820px}
.ob-crumb{display:flex;flex-wrap:wrap;gap:10px;font:500 11px/1.5 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--mut)}
.ob-crumb a{color:var(--acc)}
.ob-crumb span:last-child{color:var(--fg-2)}
.ob-cat{display:inline-block;margin-top:34px;font:500 11.5px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--acc)}
.ob-art h1{font-family:var(--serif);font-weight:400;font-size:58px;line-height:1.02;letter-spacing:-.035em;margin-top:20px;text-wrap:balance}
.ob-head{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;margin-top:30px;padding-bottom:28px;border-bottom:1px solid var(--line-2)}
.ob-by{display:flex;gap:14px;align-items:flex-start}
.ob-by img{width:56px;height:56px;object-fit:cover;flex:none}
.ob-by > div{display:flex;flex-wrap:wrap;align-items:center;gap:4px 8px;max-width:420px}
.ob-by-n{font-weight:500;font-size:16px;color:var(--fg);text-decoration:underline;text-decoration-color:var(--line-3);text-underline-offset:4px}
.ob-rt{flex-basis:100%;font:500 11.5px/1.4 var(--mono);color:var(--mut)}
.ob-role{flex-basis:100%;font-size:14.5px;color:var(--fg-2)}
.ob-rev{flex-basis:100%;font-size:13px;color:var(--mut)}
.ob-rev a{color:var(--acc);text-decoration:underline;text-underline-offset:3px}
.ob-pub{text-align:right;display:flex;flex-direction:column;gap:6px;flex:none}
.ob-pub time{font:500 12px/1 var(--mono);color:var(--fg-2)}
.ob-pub .cap + time + .cap{margin-top:8px}
.ob-hero{margin:30px 0 0;border:1px solid var(--line-2);overflow:hidden;background:#F4F3EE}
.ob-hero img{display:block;width:100%;height:auto}
.ob-take{margin-top:44px;padding:30px 32px;border:1px solid var(--line-2);background:var(--surface)}
.ob-take h2{font-family:var(--serif);font-weight:400;font-size:30px;letter-spacing:-.02em}
.ob-take ul{list-style:none;margin-top:16px;display:flex;flex-direction:column;gap:12px}
.ob-take li{position:relative;padding-left:22px;font-size:16px;line-height:1.65;color:var(--fg-2)}
.ob-take li::before{content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;background:var(--acc)}
.ob-take b,.ob-take strong{color:var(--fg);font-weight:600}

.ob-body{margin-top:44px;font-size:17px;line-height:1.78;color:var(--fg-2)}
.ob-body > * + *{margin-top:22px}
.ob-body h2{font-family:var(--serif);font-weight:400;font-size:40px;line-height:1.08;letter-spacing:-.03em;color:var(--fg);margin-top:72px;scroll-margin-top:100px}
.ob-body h3{font-family:var(--sans);font-weight:600;font-size:21px;line-height:1.35;letter-spacing:-.01em;color:var(--fg);margin-top:40px;scroll-margin-top:100px}
.ob-body h2 + *,.ob-body h3 + *{margin-top:16px}
.ob-body strong{color:var(--fg);font-weight:600}
.ob-body a{color:var(--acc);text-decoration:underline;text-decoration-color:color-mix(in srgb,var(--acc) 40%,transparent);text-underline-offset:3px;transition:text-decoration-color .15s}
.ob-body a:hover{text-decoration-color:var(--acc)}
.ob-body > ul,.ob-body > ol,.ob-body li > ul,.ob-body li > ol{padding-left:0;list-style:none;display:flex;flex-direction:column;gap:12px}
.ob-body > ul > li,.ob-body li > ul > li{position:relative;padding-left:24px}
.ob-body > ul > li::before,.ob-body li > ul > li::before{content:"";position:absolute;left:3px;top:12px;width:6px;height:6px;background:var(--acc)}
.ob-body > ol,.ob-body li > ol{counter-reset:ob}
.ob-body > ol > li,.ob-body li > ol > li{position:relative;padding-left:40px;counter-increment:ob}
.ob-body > ol > li::before,.ob-body li > ol > li::before{content:counter(ob);position:absolute;left:0;top:3px;width:26px;height:26px;display:grid;place-items:center;border:1px solid var(--acc);color:var(--acc);font:500 11.5px/1 var(--mono)}
.ob-body li > ul,.ob-body li > ol{margin-top:10px}
.ob-body blockquote{border-left:2px solid var(--acc);padding:4px 0 4px 22px;font-family:var(--serif);font-size:25px;line-height:1.3;color:var(--fg);letter-spacing:-.01em}
.ob-body hr{border:0;border-top:1px solid var(--line-2);margin:48px 0}
.ob-tw{overflow-x:auto;border:1px solid var(--line-2);background:var(--surface)}
.ob-body table{width:100%;border-collapse:collapse;font-size:15px;line-height:1.55;min-width:560px}
.ob-body th{text-align:left;font:500 10.5px/1.4 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--fg);padding:14px 16px;background:var(--bg-2);border-bottom:1px solid var(--line-2)}
.ob-body td{padding:14px 16px;border-top:1px solid var(--line);vertical-align:top;color:var(--fg-2)}
.ob-body td:first-child{color:var(--fg);font-weight:500}

.ob-cta-in{display:flex;gap:28px;align-items:center;padding:30px 32px;border:1px solid var(--line-2);background:var(--surface);margin-top:48px!important}
.ob-cta-in h3{font-family:var(--serif);font-weight:400;font-size:32px;line-height:1.05;letter-spacing:-.025em;color:var(--fg);margin-top:12px}
.ob-cta-in p{font-size:15.5px;line-height:1.6;color:var(--mut);margin:10px 0 20px}
.ob-cta-in img{width:96px;height:96px;object-fit:cover;flex:none}
.ob-body .ob-cta-in a.btn,.ob-body a.btn{color:var(--bg);text-decoration:none}
.ob-further{padding:24px 28px;border:1px solid var(--line-2);margin-top:40px!important}
.ob-further .cap{color:var(--acc)}
.ob-further p{margin-top:12px;font-size:16px}
.ob-faq{border-top:1px solid var(--line-2)}
.ob-faq details{border-bottom:1px solid var(--line-2)}
.ob-faq summary{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:20px 0;cursor:pointer;list-style:none;font-weight:500;font-size:17.5px;line-height:1.4;color:var(--fg)}
.ob-faq summary::-webkit-details-marker{display:none}
.ob-faq summary i{font-style:normal;flex:none;width:28px;height:28px;display:grid;place-items:center;border:1px solid var(--line-2);color:var(--acc);transition:transform .2s}
.ob-faq details[open] summary i{transform:rotate(45deg)}
.ob-faq details > div{padding:0 44px 22px 0;font-size:16px;line-height:1.7;color:var(--fg-2)}
.ob-faq details > div p + p{margin-top:12px}

.ob-h{font-family:var(--serif);font-weight:400;font-size:30px;letter-spacing:-.02em;color:var(--fg)}
.ob-proofs{margin-top:72px}
.ob-proofs > div{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:20px}
.ob-proof{position:relative;display:block;padding:22px 52px 22px 22px;border:1px solid var(--line-2);transition:border-color .15s,background .15s}
.ob-proof:hover{border-color:var(--acc);background:var(--surface)}
.ob-proof .cap{color:var(--acc)}
.ob-proof p{margin-top:10px;font-size:15px;line-height:1.55;color:var(--fg-2)}
.ob-proof i{position:absolute;right:20px;top:20px;font-style:normal;color:var(--acc)}
.ob-about{display:flex;gap:26px;margin-top:56px;padding:40px 44px;border:1px solid var(--line-2);border-left:2px solid var(--acc);background:var(--bg-2)}
.ob-about > img{width:88px;height:88px;object-fit:cover;flex:none}
.ob-about h2{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-weight:400;font-size:32px;letter-spacing:-.02em;margin-top:10px}
.ob-about .ob-role{display:block;margin-top:4px}
.ob-about p{font-size:16px;line-height:1.72;color:var(--fg-2);margin-top:18px}
.ob-about .ob-ai-note{font-size:14.5px;color:var(--mut);margin-top:12px}
.ob-li{display:inline-flex;gap:6px;margin-top:18px;font-size:15px;color:var(--acc)}
.ob-cta{margin-top:40px;padding:48px 48px 52px;border:1px solid var(--line-2);--bc:var(--line-3)}
.ob-cta h2{font-family:var(--serif);font-weight:400;font-size:46px;line-height:1.02;letter-spacing:-.035em;margin-top:14px}
.ob-cta p{font-size:16px;color:var(--fg-2);margin:14px 0 26px}
.ob-cta .btn{height:44px;padding:0 22px}

.ob-keep{padding:84px 36px 72px;border-top:1px solid var(--line);text-align:center}
.ob-keep h2{font-family:var(--serif);font-weight:400;font-size:52px;letter-spacing:-.035em}
.ob-all{display:inline-flex;gap:6px;margin-top:14px;font-size:17px;color:var(--acc)}
.ob-grid.rel{margin-top:44px;text-align:left;gap:0 22px;border-top:0;clip-path:none}
.ob-grid.rel .ob-card{border-right:0;border-bottom:0;border-top:1px solid var(--line-2);padding:26px 0 0}
.ob-grid.rel .ob-card:hover{background:none}

/* ---------- figures (light in both themes) ---------- */
.ob-fig{--f-bg:#FBFAF7;--f-bg2:#F1F2EE;--f-ink:#141B17;--f-ink2:#38423D;--f-mut:#68706B;--f-line:rgba(20,27,23,.12);--f-line2:rgba(20,27,23,.22);--f-acc:#1F5A43;--f-wash:#DCEBE1;
  color-scheme:light;margin-top:44px!important;margin-bottom:8px;padding:28px 28px 26px;border:1px solid var(--f-line2);color:var(--f-ink2);font-size:14.5px;line-height:1.55;
  background:radial-gradient(rgba(20,27,23,.09) 1px,transparent 1.3px) 0 0/12px 12px,var(--f-bg)}
.ob-fig-h{display:flex;align-items:baseline;gap:14px;padding-bottom:16px;margin-bottom:22px;border-bottom:1px solid var(--f-line)}
.ob-fig-h .cap{color:var(--f-acc);white-space:nowrap;flex:none}
.ob-fig-h b{font-family:var(--serif);font-weight:400;font-size:24px;line-height:1.15;letter-spacing:-.015em;color:var(--f-ink)}
.ob-fig figcaption{margin-top:20px;font-size:13.5px;line-height:1.55;color:var(--f-mut)}
.ob-fig b{color:var(--f-ink)}
.ob-fig p{margin:0}
.ob-fig a{color:var(--f-acc)}
/* flow */
.ob-flow{list-style:none;display:grid;grid-template-columns:repeat(var(--n),minmax(0,1fr));gap:14px;counter-reset:none}
.ob-flow li{position:relative;padding:16px 14px 16px;background:#fff;border:1px solid var(--f-line2)}
.ob-flow li:not(:last-child)::after{content:"";position:absolute;right:-14px;top:30px;width:14px;height:1px;background:var(--f-ink2)}
.ob-flow li:not(:last-child)::before{content:"";position:absolute;right:-12px;top:27px;width:6px;height:6px;border:solid var(--f-ink2);border-width:1px 1px 0 0;transform:rotate(45deg);z-index:1}
.ob-n{display:inline-grid;place-items:center;height:22px;padding:0 6px;background:var(--f-ink);color:#fff;font:500 10.5px/1 var(--mono);letter-spacing:.06em}
.ob-flow b{display:block;margin-top:12px;font-weight:600;font-size:14.5px;line-height:1.3}
.ob-flow p{margin-top:6px;font-size:13.5px;line-height:1.5;color:var(--f-mut)}
/* stack */
.ob-stack{list-style:none;display:flex;flex-direction:column;gap:8px}
.ob-stack li{display:grid;grid-template-columns:190px minmax(0,1fr);background:#fff;border:1px solid var(--f-line2)}
.ob-sl{padding:16px 16px;background:var(--f-ink);color:#fff;font:500 11px/1.35 var(--mono);letter-spacing:.08em;text-transform:uppercase;display:flex;align-items:center}
.ob-stack li > div:last-child{padding:14px 18px}
.ob-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.ob-chips span{height:24px;display:inline-flex;align-items:center;padding:0 8px;background:var(--f-wash);color:var(--f-acc);font:500 10.5px/1 var(--mono);letter-spacing:.06em;text-transform:uppercase}
/* compare */
.ob-cmp{background:#fff;border:1px solid var(--f-line2);overflow-x:auto}
.ob-cr{display:grid;grid-template-columns:minmax(130px,1fr) repeat(var(--c),minmax(130px,1.2fr));min-width:calc(130px + var(--c)*130px)}
.ob-cr > *{padding:13px 14px;border-top:1px solid var(--f-line)}
.ob-cr > *:not(:first-child){border-left:1px solid var(--f-line)}
.ob-ch > *{border-top:0;background:var(--f-bg2);font:500 10.5px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--f-ink)}
.ob-ch b.on{background:var(--f-ink);color:#fff}
.ob-cr em{font-style:normal;font-weight:600;color:var(--f-ink);font-size:13.5px}
.ob-cr span{font-size:13.5px}
.ob-cr span.on{background:color-mix(in srgb,var(--f-wash) 55%,#fff)}
/* funnel */
.ob-funnel{list-style:none;display:flex;flex-direction:column;align-items:center;gap:8px}
.ob-funnel li{width:var(--w);display:flex;flex-direction:column;align-items:center;text-align:center}
.ob-fb{width:100%;display:flex;justify-content:space-between;gap:12px;align-items:center;padding:13px 18px;background:var(--f-ink);color:#fff}
.ob-funnel li:nth-child(2) .ob-fb{background:#24312A}.ob-funnel li:nth-child(3) .ob-fb{background:#2F4A3D}.ob-funnel li:nth-child(4) .ob-fb{background:var(--f-acc)}.ob-funnel li:nth-child(n+5) .ob-fb{background:#2E7A58}
.ob-fb b{color:#fff;font-weight:500;font-size:14px;text-align:left}
.ob-fb span{font:500 12px/1 var(--mono);color:#CFE6D8;white-space:nowrap}
.ob-funnel p{font-size:13px;color:var(--f-mut);margin-top:6px;max-width:60ch}
/* matrix */
.ob-mx{display:grid;grid-template-columns:28px minmax(0,1fr);grid-template-rows:auto auto;gap:10px}
.ob-mx-y{writing-mode:vertical-rl;transform:rotate(180deg);text-align:center;font:500 10.5px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--f-mut)}
.ob-mx-x{grid-column:2;text-align:center;font:500 10.5px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--f-mut)}
.ob-mx-g{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.ob-q{padding:18px;background:#fff;border:1px solid var(--f-line2);min-height:120px}
.ob-q.on{background:var(--f-ink);border-color:var(--f-ink)}
.ob-q.on b{color:#fff}.ob-q.on p{color:#C9D3CD}
.ob-q b{display:block;font-weight:600;font-size:14.5px}
.ob-q p{margin-top:6px;font-size:13.5px;color:var(--f-mut)}
/* timeline */
.ob-tl{list-style:none;display:flex;flex-direction:column}
.ob-tl li{display:grid;grid-template-columns:120px minmax(0,1fr);gap:18px;padding:14px 0;border-top:1px solid var(--f-line)}
.ob-tl li:first-child{border-top:0;padding-top:0}
.ob-when{font:500 11px/1.5 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--f-acc);padding-top:2px}
.ob-tl b{font-weight:600;font-size:15px}
.ob-tl p{margin-top:4px;font-size:14px;color:var(--f-mut)}
/* wireframes */
.ob-wf{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:22px;align-items:start}
.ob-em,.ob-br{background:#fff;border:1px solid var(--f-line2);box-shadow:0 1px 0 var(--f-line),0 12px 30px -18px rgba(20,27,23,.25)}
.ob-em-bar{display:flex;gap:6px;padding:10px 14px;border-bottom:1px solid var(--f-line);background:var(--f-bg2)}
.ob-em-bar i{width:9px;height:9px;border-radius:50%;background:#D3D7D3}
.ob-em-m{display:flex;gap:12px;padding:9px 16px;border-bottom:1px solid var(--f-line);font-size:13.5px;color:var(--f-ink)}
.ob-em-m > span:first-child{width:56px;flex:none;font:500 10.5px/1.9 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--f-mut)}
.ob-em-b{padding:18px 18px 20px;font-size:14px;line-height:1.65;color:var(--f-ink)}
.ob-em-b p + p{margin-top:12px}
.ob-pin{display:inline-grid;place-items:center;width:18px;height:18px;margin:0 3px;border-radius:50%;background:var(--f-acc);color:#fff;font:500 10px/1 var(--mono);vertical-align:1px}
.ob-notes{list-style:none;display:flex;flex-direction:column;gap:12px}
.ob-notes li{display:grid;grid-template-columns:24px minmax(0,1fr);gap:8px;font-size:13.5px;line-height:1.55}
.ob-notes .ob-pin{margin:1px 0 0}
.ob-fig .ob-pin,.ob-fig .ob-n,.ob-fig .ob-sl,.ob-fig .ob-fb b,.ob-fig .ob-ch b.on,.ob-fig .ob-q.on b{color:#fff}
.ob-fig .ob-fb span{color:#CFE6D8}
.ob-funnel li:nth-child(n+4) .ob-fb span{color:#fff}
/* site.css greys the first span in every ol li; figures use ordered lists, so restate their own colours */
.ob-fig .ob-when{color:var(--f-acc)}
.ob-fig .ob-q.on p{color:#C9D3CD}
.ob-br-h{padding:16px 18px;border-bottom:1px solid var(--f-line);background:var(--f-bg2)}
.ob-br-h b{display:block;font-family:var(--serif);font-weight:400;font-size:21px}
.ob-br-h span{font:500 10.5px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--f-mut)}
.ob-br-s{padding:13px 18px;border-bottom:1px solid var(--f-line)}
.ob-br-s:last-child{border-bottom:0}
.ob-br-s > span{display:block;font:500 10.5px/1.5 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--f-acc);margin-bottom:6px}
.ob-br-s p{font-size:13.5px;line-height:1.55;color:var(--f-ink2)}

/* ---------- responsive ---------- */
@media (max-width:1180px){.ob-post{grid-template-columns:250px minmax(0,1fr);gap:44px}.ob-art h1{font-size:50px}}
@media (max-width:980px){
  .ob-grid{grid-template-columns:1fr 1fr}
  .ob-post{grid-template-columns:1fr;gap:0;padding-top:40px}.ob-side{position:static;order:2;margin-top:48px}.ob-toc{display:none}
  .ob-art{max-width:none}.ob-pb-grid{grid-template-columns:1fr;gap:40px}.ob-pb-form{border-left:0;padding-left:0;border-top:1px solid var(--line-2);padding-top:36px}
  .ob-flow{grid-template-columns:1fr 1fr}.ob-flow li::after,.ob-flow li::before{display:none}.ob-wf{grid-template-columns:1fr}
  .ob-grid.rel{grid-template-columns:1fr 1fr}
}
@media (max-width:620px){
  .ob-filters{padding:22px 18px}.ob-frow{flex-direction:column;align-items:stretch;gap:12px}.ob-frow .psearch{max-width:none}
  .ob-grid,.ob-grid.rel{grid-template-columns:1fr}.ob-grid > .ob-card{border-right:0!important;padding:26px 18px}
  .ob-grid.rel .ob-card{padding:24px 0 0}
  .ob-post{padding:32px 18px 24px}.ob-art h1{font-size:38px}.ob-head{flex-direction:column;gap:16px}.ob-pub{text-align:left}
  .ob-body{font-size:16.5px}.ob-body h2{font-size:31px;margin-top:56px}.ob-body h3{font-size:19px}
  .ob-take,.ob-cta-in,.ob-further{padding:22px 20px}.ob-cta-in{flex-direction:column;align-items:flex-start}.ob-cta-in img{display:none}
  .ob-about{flex-direction:column;padding:28px 22px}.ob-cta{padding:32px 22px}.ob-cta h2{font-size:34px}.ob-proofs > div{grid-template-columns:1fr}
  .ob-keep{padding:60px 18px}.ob-keep h2{font-size:40px}
  .ob-pb{padding:40px 18px}.ob-pb-in{padding:0 20px}.ob-pb h2{font-size:38px}.ob-faces img{width:40px;height:40px}
  .ob-fig{padding:20px 16px}.ob-flow{grid-template-columns:1fr}.ob-stack li{grid-template-columns:1fr}.ob-tl li{grid-template-columns:1fr;gap:4px}
  .ob-mx-g{grid-template-columns:1fr}.ob-mx{grid-template-columns:1fr}.ob-mx-y{display:none}.ob-mx-x{grid-column:1}
  .ob-funnel li{width:100%!important}.ob-fb{flex-wrap:wrap;gap:4px 12px}.ob-fb span{white-space:normal}
}
@media (prefers-reduced-motion:reduce){.ob-thumb img,.ob-card,.ob-faq summary i{transition:none}}

/* blog index: the playbook block is the one call to action, so the footer follows it directly */
.ob-foot-only .foot{border-top:0}