:root {
  --ink: #11132f;
  --muted: #5f6280;
  --paper: #fbfaff;
  --lavender: #f1efff;
  --line: rgba(42, 45, 95, .12);
  --blue: #315df5;
  --orange: #f25c35;
  --purple: #7257e9;
  --white: #fff;
  --shadow: 0 24px 70px rgba(55, 45, 120, .12);
  --soft-shadow: 0 14px 34px rgba(55, 45, 120, .09);
  --radius: 28px;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 110px; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 92% 2%, rgba(108, 86, 235, .13), transparent 25rem),
    radial-gradient(circle at 3% 20%, rgba(49, 93, 245, .08), transparent 22rem),
    var(--paper);
  font-family: "Plus Jakarta Sans", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* The lightweight shared shell keeps the original BOAi header and footer
   without making article pages download the full landing-page artwork. */
body.blog-body .hero {
  display: block;
  min-height: 0;
  grid-template-columns: none;
  gap: 0;
}

body.blog-body nav#nv .lk a[aria-current="page"] {
  color: var(--blue);
}

body.blog-body nav#nv .logo,
body.blog-body footer .logo {
  text-decoration: none;
}

body.blog-body footer {
  margin-top: 0;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input { font: inherit; }
button { color: inherit; }
::selection { color: #fff; background: var(--blue); }

.shell { width:70%; margin-inline:auto; }
.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: 1px solid transparent;
  background: rgba(251, 250, 255, .82);
  backdrop-filter: blur(18px) saturate(145%);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.site-header.scrolled { border-color: var(--line); box-shadow: 0 10px 35px rgba(39, 32, 93, .06); }
.nav { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: max-content; font-weight: 830; letter-spacing: -.04em; font-size: 1.15rem; }
.brand-mark {
  position: relative;
  width: 42px;
  aspect-ratio: 1;
  border-radius: 15px;
  background: linear-gradient(145deg, #ff7b50, #ee4938 55%, #6f4ae4);
  box-shadow: inset 0 1px rgba(255,255,255,.7), 0 9px 20px rgba(239, 77, 53, .25);
  transform: rotate(-7deg);
}
.brand-mark::before { content: ""; position: absolute; inset: 9px; border: 4px solid rgba(255,255,255,.94); border-radius: 50%; }
.brand-mark::after { content: ""; position: absolute; width: 8px; height: 8px; right: 6px; top: 6px; border-radius: 50%; background: #fff; box-shadow: 0 0 0 4px rgba(255,255,255,.22); }
.brand-sub { color: var(--muted); font-weight: 650; letter-spacing: -.02em; }
.slash { color: #c6c5d7; font-weight: 400; }
.nav-note { display: inline-flex; align-items: center; gap: 9px; color: var(--muted); font-weight: 680; font-size: .8rem; letter-spacing: .02em; }
.pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 7px rgba(242,92,53,.11); }

.hero { position: relative; padding: clamp(64px, 10vw, 118px) 0 52px; isolation: isolate; }
.hero::before, .hero::after { content:""; position:absolute; z-index:-1; border-radius:50%; filter:blur(1px); animation: drift 9s ease-in-out infinite alternate; }
.hero::before { width: 170px; height: 170px; top: 38px; right: 3%; background: radial-gradient(circle at 32% 30%, #fff, #e4ddff 35%, #b9aaff 70%, transparent 72%); opacity:.45; }
.hero::after { width: 90px; height:90px; left:-20px; bottom:15px; background: radial-gradient(circle at 35% 32%, #fff, #ffd6c7 35%, #ff8b65 72%); opacity:.3; animation-delay:-3s; }
@keyframes drift { to { transform: translate3d(0, 16px, 0) rotate(4deg); } }
.eyebrow { display: flex; align-items: center; gap: 12px; margin: 0 0 22px; color: var(--blue); font-size: .74rem; font-weight: 820; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow::before { content:""; width: 34px; height: 2px; border-radius: 2px; background: linear-gradient(90deg, var(--orange), var(--blue)); }
.hero h1 { max-width: 930px; margin: 0; font-size: clamp(3.15rem, 7.5vw, 6.7rem); line-height: .94; letter-spacing: -.075em; font-weight: 850; text-wrap: balance; }
.hero h1 em { color: transparent; font-style: normal; background: linear-gradient(95deg, var(--blue), var(--purple) 45%, var(--orange)); -webkit-background-clip: text; background-clip: text; }
.hero-bottom { margin-top: 34px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, .72fr); gap: 38px; align-items: end; }
.hero-copy { max-width: 670px; margin: 0; color: var(--muted); font-size: clamp(1rem, 1.8vw, 1.22rem); line-height: 1.7; }
.search-wrap { position: relative; }
.search-wrap svg { position: absolute; width: 19px; left: 18px; top: 50%; transform: translateY(-50%); color: var(--blue); }
.search-wrap input { width: 100%; height: 58px; padding: 0 48px 0 50px; color: var(--ink); border: 1px solid rgba(49,93,245,.2); border-radius: 18px; outline: none; background: rgba(255,255,255,.78); box-shadow: var(--soft-shadow); transition: border-color .2s, box-shadow .2s, background .2s; }
.search-wrap input:focus { border-color: var(--blue); background:#fff; box-shadow: 0 0 0 5px rgba(49,93,245,.1), var(--soft-shadow); }
.keycap { position:absolute; right:14px; top:50%; transform:translateY(-50%); display:grid; place-items:center; min-width:27px; height:27px; padding:0 6px; border:1px solid var(--line); border-bottom-width:2px; border-radius:8px; background:#fff; color:#8b8da5; font-size:.68rem; font-weight:750; }

.filters { position: relative; display: flex; gap: 9px; padding: 14px 0 32px; overflow-x: auto; scrollbar-width: none; }
.filters::-webkit-scrollbar { display:none; }
.filter {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 16px;
  background: rgba(255,255,255,.64);
  cursor: pointer;
  font-size: .8rem;
  font-weight: 760;
  transition: transform .2s, color .2s, background .2s, border-color .2s;
}
.filter:hover { transform: translateY(-2px); border-color: rgba(49,93,245,.3); }
.filter.active { color:#fff; border-color: var(--ink); background: var(--ink); box-shadow: 0 8px 20px rgba(17,19,47,.17); }
.filter span { opacity:.55; margin-left:4px; }

.featured { padding-bottom: 25px; }
.feature-card {
  position: relative;
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  min-height: 460px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.8);
  border-radius: 36px;
  background: linear-gradient(135deg, #fff 0 42%, #eeeaff 100%);
  box-shadow: var(--shadow);
  transform: translateZ(0);
}
.feature-copy { z-index:2; display:flex; flex-direction:column; justify-content:center; padding: clamp(32px, 5vw, 62px); }
.meta { display:flex; align-items:center; flex-wrap:wrap; gap:8px 13px; color:var(--muted); font-size:.72rem; font-weight:760; letter-spacing:.04em; text-transform:uppercase; }
.tag { display:inline-flex; align-items:center; min-height:28px; padding:0 11px; border-radius:999px; color:var(--accent,var(--blue)); background: color-mix(in srgb, var(--accent,var(--blue)) 10%, white); border:1px solid color-mix(in srgb, var(--accent,var(--blue)) 16%, white); }
.feature-copy h2 { margin: 20px 0 17px; font-size: clamp(2.1rem, 4vw, 4.1rem); line-height: 1.02; letter-spacing: -.055em; text-wrap: balance; }
.feature-copy p { max-width: 600px; margin:0 0 26px; color:var(--muted); line-height:1.7; font-size:.98rem; }
.read-link { display:inline-flex; align-items:center; gap:10px; width:max-content; font-size:.86rem; font-weight:830; color:var(--blue); }
.read-link i { display:grid; place-items:center; width:31px; height:31px; border-radius:50%; color:#fff; background:var(--blue); font-style:normal; transition:transform .2s; }
a:hover .read-link i, .read-link:hover i { transform: translateX(4px) rotate(-8deg); }
.feature-media { position:relative; min-height:420px; overflow:hidden; }
.feature-media::before { content:""; position:absolute; inset:9% 8%; border:1px solid rgba(255,255,255,.8); border-radius:50%; background:rgba(255,255,255,.25); backdrop-filter:blur(10px); transform:rotate(-7deg); }
.feature-media img { position:absolute; z-index:1; width:110%; height:110%; right:-8%; bottom:-5%; object-fit:cover; border-radius: 44% 0 0 44%; filter: drop-shadow(0 28px 35px rgba(68,47,145,.18)); transition: transform .7s cubic-bezier(.2,.8,.2,1); }
.feature-card:hover .feature-media img { transform: scale(1.035) translateX(-1%); }
.feature-no { position:absolute; z-index:2; right:24px; top:20px; color:rgba(17,19,47,.16); font-size:clamp(3.5rem,7vw,7rem); line-height:1; font-weight:900; letter-spacing:-.08em; }

.archive-head { display:flex; align-items:end; justify-content:space-between; gap:24px; margin:64px 0 24px; }
.archive-head h2 { margin:0; font-size:clamp(2rem,4vw,3.6rem); letter-spacing:-.055em; }
.result-count { color:var(--muted); font-size:.83rem; font-weight:720; }
.grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:22px; padding-bottom:100px; }
.post-card { --accent: var(--blue); position:relative; display:flex; flex-direction:column; min-height:100%; overflow:hidden; border:1px solid var(--line); border-radius:var(--radius); background:rgba(255,255,255,.76); box-shadow:var(--soft-shadow); content-visibility:auto; contain-intrinsic-size:520px; transition:transform .35s cubic-bezier(.2,.8,.2,1), box-shadow .35s, border-color .35s; }
.post-card:hover { transform:translateY(-9px); border-color:color-mix(in srgb,var(--accent) 30%,white); box-shadow:0 28px 54px color-mix(in srgb,var(--accent) 16%,transparent); }
.post-card[hidden] { display:none; }
.card-media { position:relative; aspect-ratio: 1.57; overflow:hidden; background:var(--lavender); }
.card-media::after { content:""; position:absolute; inset:auto 0 0; height:45%; background:linear-gradient(transparent,rgba(18,17,48,.09)); }
.card-media img { width:100%; height:100%; object-fit:cover; transition:transform .7s cubic-bezier(.2,.8,.2,1); }
.post-card:hover .card-media img { transform:scale(1.055); }
.card-no { position:absolute; z-index:2; top:14px; right:16px; width:39px; height:39px; display:grid; place-items:center; border:1px solid rgba(255,255,255,.7); border-radius:13px; color:#fff; background:rgba(17,19,47,.3); backdrop-filter:blur(12px); font-size:.72rem; font-weight:850; }
.card-body { display:flex; flex:1; flex-direction:column; padding:23px 23px 21px; }
.card-body h3 { margin:15px 0 12px; font-size:1.3rem; line-height:1.2; letter-spacing:-.035em; text-wrap:balance; }
.card-body p { margin:0; color:var(--muted); font-size:.88rem; line-height:1.65; }
.card-foot { display:flex; align-items:center; justify-content:space-between; gap:14px; margin-top:auto; padding-top:24px; color:var(--accent); font-size:.74rem; font-weight:830; }
.arrow { display:grid; place-items:center; width:35px; height:35px; border-radius:50%; color:#fff; background:var(--accent); transition:transform .25s; }
.post-card:hover .arrow { transform:translateX(4px) rotate(-8deg); }
.empty { display:none; margin:20px 0 90px; padding:50px 24px; text-align:center; border:1px dashed rgba(49,93,245,.3); border-radius:var(--radius); color:var(--muted); }
.empty.show { display:block; }

.site-footer { border-top:1px solid var(--line); background:rgba(255,255,255,.5); }
.footer-inner { min-height:94px; display:flex; align-items:center; justify-content:space-between; gap:20px; color:var(--muted); font-size:.77rem; }
.footer-inner .brand { color:var(--ink); font-size:.95rem; }
.footer-inner .brand-mark { width:32px; border-radius:11px; }
.footer-inner .brand-mark::before { inset:7px; border-width:3px; }
.footer-inner .brand-mark::after { width:6px; height:6px; right:4px; top:4px; }

/* Article pages */
.article-shell { width:70%; margin-inline:auto; }
.article-top { padding:46px 0 30px; }
.breadcrumb { display:flex; flex-wrap:wrap; align-items:center; gap:8px; color:var(--muted); font-size:.76rem; font-weight:720; }
.breadcrumb a:hover { color:var(--blue); }
.article-head { max-width:970px; padding:50px 0 36px; }
.article-head h1 { margin:20px 0 22px; font-size:clamp(2.7rem,6.5vw,6.3rem); line-height:.98; letter-spacing:-.068em; text-wrap:balance; }
.article-dek { max-width:830px; margin:0; color:var(--muted); font-size:clamp(1.05rem,2vw,1.35rem); line-height:1.68; }
.article-byline { display:flex; align-items:center; flex-wrap:wrap; gap:12px; margin-top:27px; color:var(--muted); font-size:.8rem; font-weight:680; }
.author-dot { width:29px; height:29px; display:grid; place-items:center; border-radius:10px; color:#fff; background:linear-gradient(145deg,var(--accent,var(--blue)),var(--purple)); font-size:.6rem; font-weight:900; }
.hero-image { position:relative; aspect-ratio:1.9; max-height:650px; overflow:hidden; border-radius:36px; background:var(--lavender); box-shadow:var(--shadow); }
.hero-image img { width:100%; height:100%; object-fit:cover; }
.hero-image::after { content:""; position:absolute; inset:0; border-radius:inherit; box-shadow:inset 0 0 0 1px rgba(255,255,255,.7); pointer-events:none; }
.article-facts { display:grid; grid-template-columns:repeat(3,1fr); margin:22px 0 0; border:1px solid var(--line); border-radius:22px; background:rgba(255,255,255,.72); box-shadow:var(--soft-shadow); }
.article-facts div { padding:20px 22px; }
.article-facts div + div { border-left:1px solid var(--line); }
.article-facts small { display:block; margin-bottom:6px; color:var(--muted); font-size:.65rem; font-weight:800; letter-spacing:.11em; text-transform:uppercase; }
.article-facts b { font-size:.92rem; letter-spacing:-.02em; }
.article-layout { display:grid; grid-template-columns:minmax(160px,240px) minmax(0,760px); justify-content:center; gap:clamp(24px,4vw,72px); padding:70px 0 110px; }
.toc { position:sticky; top:108px; align-self:start; }
.toc b { display:block; margin-bottom:16px; font-size:.72rem; letter-spacing:.12em; text-transform:uppercase; }
.toc a { display:block; margin:0 0 11px; padding-left:13px; border-left:2px solid var(--line); color:var(--muted); font-size:.78rem; line-height:1.45; transition:color .2s,border-color .2s; }
.toc a:hover, .toc a.active { color:var(--blue); border-color:var(--blue); }
.share-row { display:flex; gap:8px; margin-top:24px; }
.share-button { min-height:36px; padding:0 12px; border:1px solid var(--line); border-radius:11px; background:#fff; cursor:pointer; color:var(--muted); font-size:.7rem; font-weight:760; transition:color .2s,border-color .2s,transform .2s; }
.share-button:hover { color:var(--blue); border-color:rgba(49,93,245,.3); transform:translateY(-2px); }
.article-body { min-width:0; }
.article-body > p:first-child { margin-top:0; font-size:1.22rem; line-height:1.75; color:#363854; }
.quick-answer { position:relative; margin:0 0 55px; padding:27px 28px 27px 30px; overflow:hidden; border:1px solid color-mix(in srgb,var(--accent) 22%,white); border-radius:22px; background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 7%,white),#fff); box-shadow:var(--soft-shadow); }
.quick-answer::before { content:""; position:absolute; inset:0 auto 0 0; width:5px; background:var(--accent); }
.quick-answer b { display:block; margin-bottom:8px; color:var(--accent); font-size:.7rem; letter-spacing:.12em; text-transform:uppercase; }
.quick-answer p { margin:0; color:#373955; line-height:1.72; }
.article-section { padding:12px 0 40px; content-visibility:auto; contain-intrinsic-size:520px; }
.article-section + .article-section { border-top:1px solid var(--line); padding-top:50px; }
.article-section h2 { margin:0 0 21px; font-size:clamp(1.75rem,3.5vw,2.55rem); line-height:1.12; letter-spacing:-.045em; text-wrap:balance; }
.article-section h3 { margin:28px 0 8px; font-size:1.12rem; letter-spacing:-.025em; }
.article-section p { margin:0 0 19px; color:#4d506d; font-size:1rem; line-height:1.8; }
.article-section ul:not(.big-checks) { margin:14px 0 24px; padding-left:22px; color:#4d506d; line-height:1.75; }
.article-section li + li { margin-top:8px; }
.flow-list { margin:26px 0 28px; padding:0; list-style:none; counter-reset:flow; }
.flow-list li { counter-increment:flow; display:grid; grid-template-columns:43px minmax(0,1fr); gap:5px 15px; align-items:start; padding:17px 0; border-bottom:1px solid var(--line); }
.flow-list li::before { content:counter(flow,decimal-leading-zero); grid-row:span 2; display:grid; place-items:center; width:43px; height:43px; border-radius:14px; color:#fff; background:var(--accent); box-shadow:0 8px 18px color-mix(in srgb,var(--accent) 24%,transparent); font-size:.68rem; font-weight:850; }
.flow-list strong { align-self:end; font-size:.95rem; }
.flow-list span { color:var(--muted); font-size:.88rem; line-height:1.58; }
.decision-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin:26px 0; }
.decision-grid > div { padding:20px; border:1px solid var(--line); border-radius:18px; background:rgba(255,255,255,.82); }
.decision-grid h3 { margin:12px 0 8px; font-size:1rem; }
.decision-grid p { margin:0; font-size:.83rem; line-height:1.55; }
.decision-grid ul { margin:10px 0 0 !important; padding-left:17px !important; font-size:.8rem; }
.mini-label { display:inline-flex; min-height:24px; align-items:center; padding:0 9px; border-radius:999px; font-size:.62rem; font-weight:850; letter-spacing:.06em; text-transform:uppercase; }
.mini-label.safe { color:#087a68; background:#e5f7f2; }
.mini-label.review { color:#9b6500; background:#fff4d5; }
.mini-label.stop { color:#b63230; background:#ffe9e5; }
.check-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:10px; margin:24px 0 28px; }
.check-grid span { padding:13px 15px; border:1px solid var(--line); border-radius:13px; background:#fff; color:#393c59; font-size:.82rem; font-weight:700; }
.timeline { display:grid; grid-template-columns:repeat(4,1fr); gap:10px; margin:25px 0 28px; }
.timeline div { position:relative; padding:19px 17px; border:1px solid var(--line); border-radius:17px; background:#fff; }
.timeline div::before { content:""; position:absolute; top:-1px; left:16px; right:16px; height:3px; border-radius:0 0 4px 4px; background:var(--accent); }
.timeline b { font-size:.78rem; color:var(--accent); }
.timeline p { margin:9px 0 0; font-size:.78rem; line-height:1.55; }
.callout { margin:28px 0; padding:22px 24px; border-radius:18px; background:var(--ink); box-shadow:0 18px 42px rgba(17,19,47,.16); }
.callout strong { color:#fff; font-size:1rem; }
.callout p { margin:8px 0 0; color:#cfd1e3; font-size:.86rem; line-height:1.65; }
.metric-table { margin:25px 0 30px; overflow:hidden; border:1px solid var(--line); border-radius:18px; background:#fff; }
.metric-table > div { display:grid; grid-template-columns:1fr 1.35fr .8fr; }
.metric-table > div + div { border-top:1px solid var(--line); }
.metric-table span { padding:13px 15px; color:#555873; font-size:.76rem; line-height:1.45; }
.metric-table span + span { border-left:1px solid var(--line); }
.metric-table .head { background:var(--ink); }
.metric-table .head span { color:#fff; font-size:.65rem; font-weight:800; letter-spacing:.08em; text-transform:uppercase; }
.card-list { display:grid; grid-template-columns:repeat(2,1fr); gap:12px; margin:25px 0; }
.card-list article { padding:20px; border:1px solid var(--line); border-radius:17px; background:#fff; }
.card-list b { display:block; margin-bottom:7px; color:var(--accent); }
.card-list p { margin:0; font-size:.82rem; line-height:1.55; }
.score-stack { margin:24px 0; border:1px solid var(--line); border-radius:18px; overflow:hidden; }
.score-stack div { display:flex; align-items:center; justify-content:space-between; gap:18px; padding:14px 17px; background:#fff; }
.score-stack div + div { border-top:1px solid var(--line); }
.score-stack span { color:var(--muted); font-size:.78rem; }
.score-stack b { text-align:right; font-size:.78rem; }
.flow-strip { display:flex; align-items:center; justify-content:space-between; gap:8px; margin:28px 0; padding:18px; overflow-x:auto; border:1px solid var(--line); border-radius:18px; background:#fff; }
.flow-strip span { flex:0 0 auto; padding:9px 12px; border-radius:10px; color:#343750; background:var(--lavender); font-size:.72rem; font-weight:760; }
.flow-strip i { color:var(--accent); font-style:normal; }
.big-checks { margin:25px 0; padding:0; list-style:none; }
.big-checks li { display:grid; grid-template-columns:minmax(130px,.6fr) 1.4fr; gap:18px; padding:15px 0; border-bottom:1px solid var(--line); }
.big-checks b { font-size:.85rem; }
.big-checks span { color:var(--muted); font-size:.83rem; line-height:1.55; }
.formula { display:flex; align-items:center; justify-content:center; flex-wrap:wrap; gap:9px; margin:27px 0; padding:21px; border-radius:18px; color:#fff; background:linear-gradient(125deg,var(--ink),color-mix(in srgb,var(--accent) 55%,var(--ink))); box-shadow:var(--soft-shadow); }
.formula span { padding:8px 11px; border:1px solid rgba(255,255,255,.16); border-radius:10px; background:rgba(255,255,255,.08); font-size:.76rem; font-weight:760; }
.formula b { color:#bfc8ff; }
.agent-map { display:flex; align-items:center; gap:9px; margin:26px 0; padding:20px; overflow-x:auto; border:1px solid var(--line); border-radius:19px; background:#fff; }
.agent-map article { flex:0 0 145px; padding:15px; border-radius:14px; background:var(--lavender); }
.agent-map article:first-child { color:#fff; background:var(--accent); }
.agent-map b { display:block; margin-bottom:6px; font-size:.75rem; }
.agent-map span { display:block; font-size:.68rem; line-height:1.45; opacity:.78; }
.agent-map i { color:var(--accent); font-style:normal; font-weight:900; }

.faq, .sources { padding-top:48px; border-top:1px solid var(--line); }
.faq h2, .sources h2 { margin:0 0 22px; font-size:1.7rem; letter-spacing:-.04em; }
.faq details { border-bottom:1px solid var(--line); }
.faq summary { display:flex; justify-content:space-between; gap:18px; padding:18px 0; cursor:pointer; font-weight:760; font-size:.92rem; list-style:none; }
.faq summary::-webkit-details-marker { display:none; }
.faq summary::after { content:'+'; color:var(--accent); font-size:1.25rem; transition:transform .2s; }
.faq details[open] summary::after { transform:rotate(45deg); }
.faq details p { margin:0; padding:0 34px 20px 0; color:var(--muted); font-size:.86rem; line-height:1.7; }
.sources { margin-top:50px; }
.sources ol { margin:0; padding-left:20px; }
.sources li { padding:6px 0; color:var(--muted); font-size:.8rem; line-height:1.5; }
.sources a { text-decoration:underline; text-decoration-color:rgba(49,93,245,.35); text-underline-offset:3px; }
.sources a:hover { color:var(--blue); }
.related { padding:75px 0 100px; border-top:1px solid var(--line); }
.related-head { display:flex; align-items:end; justify-content:space-between; gap:20px; margin-bottom:24px; }
.related-head h2 { margin:0; font-size:clamp(2rem,4vw,3.4rem); letter-spacing:-.055em; }
.related-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.related-grid .post-card:nth-child(n+4) { display:none; }
.progress { position:fixed; z-index:130; top:0; left:0; width:0; height:3px; background:linear-gradient(90deg,var(--orange),var(--blue),var(--purple)); box-shadow:0 0 12px rgba(49,93,245,.4); }

@media (max-width: 980px) {
  .shell,.article-shell{width:92%}
  .hero-bottom { grid-template-columns:1fr; }
  .search-wrap { max-width:560px; }
  .feature-card { grid-template-columns:1fr; }
  .feature-media { min-height:360px; order:-1; }
  .feature-media img { right:0; bottom:0; width:100%; height:100%; border-radius:0; }
  .grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .article-layout { grid-template-columns:minmax(0,760px); gap:0; }
  .toc { position:relative; top:auto; display:flex; gap:8px; overflow-x:auto; margin-bottom:42px; padding-bottom:8px; scrollbar-width:none; }
  .toc::-webkit-scrollbar { display:none; }
  .toc b { flex:0 0 auto; align-self:center; margin:0 6px 0 0; }
  .toc a { flex:0 0 auto; margin:0; padding:8px 11px; border:1px solid var(--line); border-radius:999px; background:#fff; font-size:.68rem; }
  .share-row { flex:0 0 auto; margin:0 0 0 5px; }
  .decision-grid { grid-template-columns:1fr; }
  .timeline { grid-template-columns:repeat(2,1fr); }
}

@media (max-width: 680px) {
  .shell, .article-shell { width:min(100% - 26px,1180px); }
  .nav { min-height:68px; }
  .brand-sub, .slash, .nav-note span:last-child { display:none; }
  .brand-mark { width:36px; border-radius:13px; }
  .hero { padding-top:52px; }
  .hero h1 { font-size:clamp(2.7rem,15vw,4.5rem); }
  .hero::before { width:100px; height:100px; opacity:.25; }
  .feature-card { border-radius:25px; }
  .feature-copy { padding:28px 23px 32px; }
  .feature-media { min-height:260px; }
  .feature-copy h2 { font-size:2rem; }
  .archive-head { margin-top:48px; }
  .grid { grid-template-columns:1fr; gap:16px; padding-bottom:75px; }
  .post-card { border-radius:22px; }
  .footer-inner { padding:22px 0; align-items:flex-start; flex-direction:column; }
  .article-top { padding-top:28px; }
  .article-head { padding:38px 0 28px; }
  .article-head h1 { font-size:clamp(2.45rem,13vw,4rem); }
  .hero-image { aspect-ratio:1.25; border-radius:24px; }
  .article-facts { grid-template-columns:1fr; }
  .article-facts div + div { border-left:0; border-top:1px solid var(--line); }
  .article-layout { padding-top:48px; padding-bottom:80px; }
  .article-body > p:first-child { font-size:1.07rem; }
  .quick-answer { padding:23px 21px; }
  .article-section + .article-section { padding-top:42px; }
  .decision-grid, .card-list, .check-grid, .timeline { grid-template-columns:1fr; }
  .metric-table { overflow-x:auto; }
  .metric-table > div { min-width:560px; }
  .big-checks li { grid-template-columns:1fr; gap:5px; }
  .related-grid { grid-template-columns:1fr; }
  .related-grid .post-card:nth-child(n+3) { display:none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior:auto; }
  *, *::before, *::after { animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; }
}