/* ===== Blog + article pages (extends style.css tokens) ===== */
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* category accents */
.c-web{--acc:#22E6D3}.c-app{--acc:#7FB2FF}.c-mkt{--acc:#FFC857}.c-sw{--acc:#B9A2FF}.c-ai{--acc:#FF8FB1}

/* ---------- listing hero ---------- */
.blog-hero .sub{max-width:62ch}
.b-tools{margin-top:28px;display:grid;gap:16px;max-width:760px}
.b-search{position:relative}
.b-search .i{position:absolute;left:18px;top:50%;transform:translateY(-50%);width:20px;height:20px;color:var(--on-dark-muted);pointer-events:none}
.b-search input{width:100%;font:inherit;color:var(--on-dark);background:rgba(255,255,255,.07);border:1.5px solid var(--on-dark-line);border-radius:16px;padding:1rem 1.1rem 1rem 3rem;transition:border-color .15s,background .15s,box-shadow .15s}
.b-search input::placeholder{color:var(--on-dark-muted)}
.b-search input:focus{outline:none;border-color:var(--teal);background:rgba(255,255,255,.1);box-shadow:0 0 0 4px rgba(34,230,211,.18)}
.b-chips{display:flex;flex-wrap:wrap;gap:10px}
.b-chip{font:600 .92rem/1 var(--body);color:var(--on-dark);background:transparent;border:1.5px solid var(--on-dark-line);border-radius:999px;padding:.7rem 1.1rem;cursor:pointer;transition:background .15s,color .15s,border-color .15s}
.b-chip:hover{border-color:var(--teal);color:var(--teal)}
.b-chip[aria-pressed="true"]{background:var(--teal);border-color:var(--teal);color:var(--night)}
.b-chip small{opacity:.7;margin-left:6px;font-weight:600}
.b-stats{display:flex;flex-wrap:wrap;gap:12px 36px;margin-top:30px;padding-top:24px;border-top:1px solid var(--on-dark-line);max-width:760px}
.b-stats div b{display:block;font:800 1.5rem/1 var(--display);color:var(--on-dark)}
.b-stats div span{font-size:.85rem;color:var(--on-dark-muted)}

/* ---------- cover art (no images needed) ---------- */
.cover{position:relative;overflow:hidden;isolation:isolate;aspect-ratio:16/9;background:
  radial-gradient(120% 90% at 85% 10%,color-mix(in srgb,var(--acc,#22E6D3) 38%,transparent),transparent 62%),
  linear-gradient(135deg,#0A0F1C,#0E1A2B 60%,#0A0F1C);color:var(--acc,#22E6D3)}
.cover::before{content:"";position:absolute;inset:0;z-index:-1;background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:32px 32px;-webkit-mask-image:linear-gradient(135deg,transparent 20%,#000);mask-image:linear-gradient(135deg,transparent 20%,#000)}
.cover .big{position:absolute;right:-6%;bottom:-14%;width:62%;height:auto;aspect-ratio:1;stroke-width:.9;opacity:.34}
.cover .badge{position:absolute;left:18px;top:18px;display:inline-flex;align-items:center;gap:8px;padding:.45rem .8rem;border-radius:999px;background:rgba(7,11,20,.72);border:1px solid color-mix(in srgb,var(--acc) 45%,transparent);font:700 .74rem/1 var(--body);letter-spacing:.09em;text-transform:uppercase;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.cover .badge .i{width:15px;height:15px}
.cover .mins{position:absolute;left:18px;bottom:16px;font:600 .85rem/1 var(--body);color:var(--on-dark-muted)}

/* ---------- featured ---------- */
.feat{display:grid;grid-template-columns:1.05fr .95fr;gap:0;background:var(--night-2);color:var(--on-dark);border:1px solid rgba(34,230,211,.28);border-radius:var(--r-lg);overflow:hidden;position:relative;box-shadow:0 24px 60px rgba(7,11,20,.16);transition:transform .25s,box-shadow .25s}
.feat:hover{transform:translateY(-3px);box-shadow:0 30px 70px rgba(7,11,20,.22)}
.feat .cover{aspect-ratio:auto;min-height:340px;height:100%}
.feat-body{padding:clamp(24px,4vw,48px);display:flex;flex-direction:column;gap:16px;justify-content:center}
.feat-kicker{display:inline-flex;align-self:flex-start;gap:8px;align-items:center;color:var(--teal);font:700 .8rem/1 var(--body);letter-spacing:.14em;text-transform:uppercase}
.feat-kicker::before{content:"";width:22px;height:2px;background:var(--teal);border-radius:2px}
.feat h2{font-size:clamp(1.55rem,2.6vw,2.2rem);line-height:1.15}
.feat h2 a{text-decoration:none}
.feat h2 a::after{content:"";position:absolute;inset:0;z-index:2}
.feat p{color:var(--on-dark-muted)}
.meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;font-size:.88rem;color:var(--muted)}
.meta i{width:4px;height:4px;border-radius:50%;background:currentColor;opacity:.5}
.feat .meta{color:var(--on-dark-muted)}
.feat .more{color:var(--teal);margin-top:6px}

/* ---------- grid cards ---------- */
.b-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:28px}
.bcard{position:relative;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s}
.bcard:hover{transform:translateY(-4px);border-color:var(--cobalt);box-shadow:0 18px 44px rgba(7,11,20,.12)}
.bcard-body{display:flex;flex-direction:column;gap:12px;padding:22px 24px 26px;flex:1}
.bcard h3{font-size:1.28rem;line-height:1.22;letter-spacing:-.02em}
.bcard h3 a{text-decoration:none}
.bcard h3 a::after{content:"";position:absolute;inset:0;z-index:2}
.bcard p{color:var(--muted);font-size:1rem;line-height:1.6}
.bcard .more{margin-top:auto;padding-top:8px}
.bcard.is-dup{display:none}
.b-grid.filtering .bcard.is-dup{display:flex}
.b-empty{display:none;text-align:center;padding:56px 20px;border:1.5px dashed var(--line);border-radius:var(--r-lg);margin-top:28px;color:var(--muted)}
.b-empty b{display:block;color:var(--ink);font:700 1.3rem/1.2 var(--display);margin-bottom:6px}
.b-empty.show{display:block}

/* ---------- mid band + service tiles ---------- */
.b-band{margin-top:56px;display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center;background:var(--cobalt);color:var(--night);border-radius:var(--r-lg);padding:clamp(26px,4vw,48px);position:relative;overflow:hidden}
.b-band::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(7,11,20,.1) 1px,transparent 1px),linear-gradient(90deg,rgba(7,11,20,.1) 1px,transparent 1px);background-size:40px 40px;-webkit-mask-image:radial-gradient(60% 100% at 100% 0,#000,transparent);mask-image:radial-gradient(60% 100% at 100% 0,#000,transparent);pointer-events:none}
.b-band>*{position:relative}
.b-band h2{font-size:clamp(1.6rem,2.8vw,2.3rem);color:var(--night)}
.b-band p{margin-top:10px;color:rgba(7,11,20,.78);max-width:46ch}
.b-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.btn-night{background:var(--night);color:var(--on-dark)}
.btn-night:hover{background:#000;color:#fff}
.btn-outline-night{border-color:var(--night);color:var(--night);background:transparent}
.btn-outline-night:hover{background:var(--night);color:var(--on-dark)}
.b-topics{margin-top:56px}
.b-topics h2{font-size:clamp(1.5rem,2.6vw,2rem);margin-bottom:20px}
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.topic-grid.five{grid-template-columns:repeat(6,1fr)}
.topic-grid.five .topic{grid-column:span 2}
.topic-grid.five .topic:nth-child(n+4){grid-column:span 3}
.topic{display:flex;gap:16px;align-items:center;padding:20px;border:1px solid var(--line);border-radius:var(--r-md);text-decoration:none;background:var(--surface);transition:border-color .2s,transform .2s}
.topic:hover{border-color:var(--cobalt);transform:translateY(-2px)}
.topic .ico{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:var(--tint);color:var(--cobalt-deep);flex:none}
.topic .ico .i{width:24px;height:24px}
.topic b{display:block;font:700 1.05rem/1.2 var(--display)}
.topic span{display:block;color:var(--muted);font-size:.9rem;margin-top:3px}

/* ---------- article ---------- */
.read-progress{position:fixed;top:0;left:0;height:3px;width:100%;transform:scaleX(0);transform-origin:left;background:linear-gradient(90deg,var(--teal),#7FF3E7);z-index:70;pointer-events:none}
.post-hero .ph-copy{max-width:860px}
.post-hero h1{font-size:clamp(1.9rem,3.8vw,3.1rem)}
.cat-pill{display:inline-flex;align-items:center;gap:8px;padding:.5rem .9rem;border-radius:999px;background:rgba(7,11,20,.5);border:1px solid color-mix(in srgb,var(--acc,#22E6D3) 50%,transparent);color:var(--acc,#22E6D3);font:700 .78rem/1 var(--body);letter-spacing:.1em;text-transform:uppercase;text-decoration:none}
.cat-pill .i{width:15px;height:15px}
.byline{display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;margin-top:26px;color:var(--on-dark-muted);font-size:.95rem}
.byline .who{display:flex;align-items:center;gap:12px;color:var(--on-dark)}
.avatar{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:var(--night-3);border:1.5px solid var(--teal);color:var(--teal);font:800 1rem/1 var(--display)}
.byline b{display:block;font-weight:700;line-height:1.2}.byline small{display:block;color:var(--on-dark-muted);font-size:.8rem}

.post-wrap{padding:clamp(28px,4vw,56px) 0 clamp(20px,3vw,40px)}
.post-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:clamp(32px,5vw,72px);align-items:start}
.post-main{min-width:0;max-width:760px}
.post-body .lead{font-size:1.28rem;line-height:1.65;color:var(--ink);font-weight:500;letter-spacing:-.005em}
.takeaways{margin:28px 0 8px;padding:24px 26px;border-radius:var(--r-md);background:linear-gradient(160deg,rgba(15,173,160,.12),rgba(15,173,160,.04));border:1px solid rgba(15,173,160,.3);border-left:5px solid var(--cobalt)}
.post-body .takeaways h2{font:800 .82rem/1 var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--cobalt-deep);margin:0 0 14px}
.takeaways ul{display:grid;gap:10px}
.takeaways li{position:relative;padding-left:28px;font-weight:500;line-height:1.5}
.takeaways li::before{content:"";position:absolute;left:2px;top:.42em;width:12px;height:7px;border-left:2.5px solid var(--cobalt);border-bottom:2.5px solid var(--cobalt);transform:rotate(-45deg)}
.post-body h2{font-size:clamp(1.5rem,2.5vw,1.95rem);margin:52px 0 0;scroll-margin-top:calc(env(safe-area-inset-top,0px) + 96px);letter-spacing:-.025em}
.post-body p{color:#2b2b30;font-size:1.08rem;line-height:1.82;margin-top:16px}
.post-body .ticks{gap:12px;margin-top:18px}
.post-body .ticks li{color:#2b2b30;font-size:1.05rem;line-height:1.6;padding-left:30px}
.post-body .ticks li::before{top:.55em;width:13px}

/* inline CTA inside article */
.in-cta{margin:40px 0 0;padding:clamp(22px,3vw,32px);border-radius:var(--r-md);background:var(--night-2);color:var(--on-dark);position:relative;overflow:hidden;border:1px solid rgba(34,230,211,.35);display:grid;gap:14px}
.in-cta::before{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(34,230,211,.28),transparent 70%)}
.in-cta>*{position:relative}
.in-cta b{font:700 1.35rem/1.2 var(--display);letter-spacing:-.02em}
.in-cta p{margin:0;color:var(--on-dark-muted);font-size:1rem}
.in-cta .row{display:flex;flex-wrap:wrap;gap:12px;margin-top:4px}

/* FAQ */
.faq{margin-top:56px}
.post-body .faq h2{margin-top:0}
.faq details{margin-top:14px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);transition:border-color .2s}
.faq details[open]{border-color:var(--cobalt)}
.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 22px;font:700 1.08rem/1.35 var(--display);letter-spacing:-.01em}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";flex:none;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--tint);color:var(--cobalt-deep);font:600 1.3rem/1 var(--body);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin:0;padding:0 22px 20px;font-size:1.02rem}

/* share */
.share{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:44px;padding-top:24px;border-top:1px solid var(--line)}
.share>span{font-weight:700;margin-right:6px}
.share a,.share button{display:inline-flex;align-items:center;gap:8px;padding:.6rem 1rem;border-radius:999px;border:1.5px solid var(--line);background:var(--surface);font:600 .9rem/1 var(--body);color:var(--ink);text-decoration:none;cursor:pointer;transition:border-color .15s,color .15s,background .15s}
.share a:hover,.share button:hover{border-color:var(--cobalt);color:var(--cobalt-deep)}
.share .i{width:16px;height:16px}
.share button.done{background:var(--cobalt);border-color:var(--cobalt);color:var(--night)}

/* sidebar */
.post-aside{position:sticky;top:calc(env(safe-area-inset-top,0px) + 96px);display:grid;gap:20px}
.toc{border:1px solid var(--line);border-radius:var(--r-md);padding:20px 22px;background:var(--surface)}
.toc h2,.toc summary{font:800 .8rem/1 var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 12px}
.toc ol{display:grid;gap:2px;counter-reset:t}
.toc a{display:block;padding:.5rem .7rem;margin-left:-.7rem;border-left:3px solid transparent;border-radius:0 8px 8px 0;text-decoration:none;color:var(--muted);font-size:.95rem;line-height:1.35;transition:color .15s,background .15s,border-color .15s}
.toc a:hover{color:var(--ink);background:rgba(15,173,160,.06)}
.toc a.on{color:var(--cobalt-deep);border-left-color:var(--cobalt);background:rgba(15,173,160,.09);font-weight:600}
.toc-m{display:none}
.ask{background:var(--night-2);color:var(--on-dark);border-radius:var(--r-md);padding:24px;border:1px solid rgba(34,230,211,.35);position:relative;overflow:hidden}
.ask::before{content:"";position:absolute;right:-50px;top:-50px;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,rgba(34,230,211,.28),transparent 70%)}
.ask>*{position:relative}
.ask h2,.ask h3{font:700 1.3rem/1.2 var(--display);letter-spacing:-.02em}
.ask p{margin-top:8px;color:var(--on-dark-muted);font-size:.95rem;line-height:1.5}
.ask .btn{width:100%;margin-top:14px;padding:.85rem 1rem}
.ask ul{margin-top:16px;display:grid;gap:10px;font-size:.93rem}
.ask li{display:flex;gap:10px;align-items:center}
.ask li .i{width:18px;height:18px;color:var(--teal)}
.ask li a{text-decoration:none;color:var(--on-dark)}.ask li a:hover{color:var(--teal)}
.btn-wa{background:#25D366;color:#06210f}.btn-wa:hover{background:#4be586;color:#06210f}

/* end CTA + related */
.end-cta{margin-top:56px}
.end-cta-box{position:relative;overflow:hidden;border-radius:var(--r-lg);background:var(--night-2);color:var(--on-dark);padding:clamp(28px,5vw,56px);border:1.5px solid rgba(34,230,211,.4);display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center}
.end-cta-box::before{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(34,230,211,.13) 1px,transparent 1px),linear-gradient(90deg,rgba(34,230,211,.13) 1px,transparent 1px);background-size:44px 44px;-webkit-mask-image:radial-gradient(70% 90% at 95% 10%,#000,transparent);mask-image:radial-gradient(70% 90% at 95% 10%,#000,transparent)}
.end-cta-box>*{position:relative}
.end-cta-box h2{font-size:clamp(1.7rem,3vw,2.4rem);color:var(--on-dark)}
.end-cta-box h2 span{color:var(--teal)}
.end-cta-box p{margin-top:12px;color:var(--on-dark-muted);max-width:48ch}
.end-cta-box .b-actions{flex-direction:column;align-items:stretch}
.related{padding:clamp(32px,4vw,56px) 0 0}
.related h2{font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:6px}
.related .b-grid{margin-top:22px}

/* ---------- responsive ---------- */
@media (max-width:1020px){
  .post-layout{grid-template-columns:minmax(0,1fr)}
  .post-aside{position:static;order:2}
  .post-aside .toc{display:none}
  .toc-m{display:block;padding:0;margin:0 0 24px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface)}
  .toc-m summary{cursor:pointer;list-style:none;padding:16px 20px;margin:0}
  .toc-m summary::-webkit-details-marker{display:none}
  .toc-m summary::after{content:" ▾";}
  .toc-m ol{padding:0 20px 16px}
  .b-grid,.topic-grid,.topic-grid.five{grid-template-columns:repeat(2,1fr)}
  .topic-grid.five .topic,.topic-grid.five .topic:nth-child(n+4){grid-column:auto}
  .end-cta-box,.b-band{grid-template-columns:1fr}
  .b-actions{justify-content:flex-start}
  .end-cta-box .b-actions{flex-direction:row;flex-wrap:wrap}
}
@media (max-width:760px){
  .feat{grid-template-columns:1fr}.feat .cover{min-height:0;aspect-ratio:16/9}
  .b-grid,.topic-grid,.topic-grid.five{grid-template-columns:1fr}
  .b-chips{flex-wrap:nowrap;overflow-x:auto;margin-inline:-24px;padding:2px 24px 6px;scrollbar-width:none}
  .b-chips::-webkit-scrollbar{display:none}.b-chip{white-space:nowrap}
  .post-body .lead{font-size:1.16rem}
  .byline{gap:10px 18px}
  .in-cta .btn,.b-actions .btn{flex:1 1 100%}
}
@media (prefers-reduced-motion:reduce){.bcard,.feat,.topic{transition:none}.bcard:hover,.feat:hover,.topic:hover{transform:none}}

/* rich article content: sub-headings, images, author note */
.post-body h3{font-size:clamp(1.15rem,2vw,1.35rem);margin:34px 0 0;letter-spacing:-.02em;line-height:1.3;scroll-margin-top:calc(env(safe-area-inset-top,0px) + 96px)}
.post-body h3+p,.post-body h3+.ticks{margin-top:12px}
.post-fig{margin:28px 0 0}
.post-fig img{display:block;width:100%;height:auto;border-radius:var(--r-md);border:1px solid var(--line);background:var(--surface)}
.author-note{margin-top:44px;display:flex;gap:16px;align-items:flex-start;padding:22px 24px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface)}
.author-note .avatar{flex:none}
.author-note p{margin:0;font-size:1rem;line-height:1.65}

/* photo cover on listing cards: image fills the same box as the icon cover */
.cover.cover-img{background:var(--night-2)}
.cover.cover-img::before{display:none}
.cover.cover-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;transition:transform .6s cubic-bezier(.22,1,.36,1)}
.bcard:hover .cover-img img,.feat:hover .cover-img img{transform:scale(1.04)}

/* Inline links inside article text (internal SEO links) */
.post-body p a,.post-body .ticks a,.post-body .faq p a{color:var(--cobalt-deep);font-weight:600;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:.18em}
.post-body p a:hover,.post-body .ticks a:hover,.post-body .faq p a:hover{text-decoration-thickness:2px}

/* h4 sub-headings, bold text, tables and the image above the intro */
.post-body h4{font-size:1.05rem;margin:24px 0 0;letter-spacing:-.01em;line-height:1.35;color:var(--ink);font-weight:700}
.post-body h4+p,.post-body h4+.ticks{margin-top:10px}
.post-body strong{font-weight:700;color:var(--ink)}
.post-fig-top{margin:0 0 28px}
.tbl-wrap{margin:22px 0 0;overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--r-md);background:#fff}
.post-table{width:100%;border-collapse:collapse;font-size:1rem;line-height:1.5;min-width:520px}
.post-table th,.post-table td{padding:13px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.post-table thead th{background:var(--surface);font-weight:700;color:var(--ink);white-space:nowrap}
.post-table tbody th{font-weight:600;color:var(--ink)}
.post-table td{color:#2b2b30}
.post-table tbody tr:last-child th,.post-table tbody tr:last-child td{border-bottom:0}

/* Code blocks in posts */
.post-code{margin:18px 0;padding:16px 18px;background:#0f172a;color:#e2e8f0;border-radius:12px;overflow-x:auto;font-size:.88rem;line-height:1.6;tab-size:2}
.post-code code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace !important;white-space:pre;color:inherit;background:none;padding:0}

/* Older technical notes (archived posts) */
.b-archive{margin-top:48px;border:1px solid rgba(7,11,20,.12);border-radius:var(--r-lg);padding:18px 24px;background:rgba(7,11,20,.025)}
.b-archive summary{cursor:pointer;font-weight:700;list-style-position:inside}
.b-archive summary small{font-weight:500;opacity:.65}
.b-archive p{margin-top:12px;opacity:.75}
.b-archive ul{margin-top:14px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 32px;padding:0;list-style:none}
.b-archive li small{opacity:.6;margin-left:4px}
.b-archive a{text-decoration:underline;text-underline-offset:3px}
@media (max-width:760px){.b-archive ul{grid-template-columns:minmax(0,1fr)}}