:root{
  --ink:#0A0D13; --surface:#10151F; --panel:#141A26; --line:#212938;
  --text:#E8EBF1; --muted:#8B94A7; --dim:#7A8399; --field:#5D6679;
  --gold:#E3B158; --signal:#5CC8C0; --risk:#E0705A;
  --max:1160px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-padding-top:88px}
body{background:var(--ink);color:var(--text);font:400 16px/1.6 Inter,system-ui,-apple-system,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.mono{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.grid-bg{background-image:radial-gradient(var(--line) 1px,transparent 1px);background-size:22px 22px}
.skip{position:absolute;left:-999px;top:8px;background:var(--gold);color:#1a1405;padding:8px 12px;border-radius:6px;z-index:99}
.skip:focus{left:8px}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px}

/* nav */
header.top{position:sticky;top:0;z-index:10;background:rgba(10,13,19,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
nav.main{display:flex;align-items:center;gap:28px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:600;letter-spacing:-.01em}
.logo svg{width:26px;height:26px;flex:none}
.links{display:flex;gap:24px;margin-left:auto;font-size:14px;color:var(--muted)}
.links a:hover,.links a[aria-current]{color:var(--text)}
.lang{display:inline-flex;align-items:center;font-size:13px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:2px;white-space:nowrap}
.lang a,.lang b{display:inline-flex;align-items:center;justify-content:center;min-width:34px;min-height:32px;padding:0 8px;border-radius:999px}
.lang b{color:var(--text);font-weight:500;background:var(--panel)}
.lang a:hover{color:var(--text)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;min-height:44px;padding:10px 20px;font-size:14px;font-weight:500;white-space:nowrap;border:0;cursor:pointer;font-family:inherit}
.btn-primary{background:var(--text);color:var(--ink)}
.btn-ghost{border:1px solid var(--field);color:var(--text);background:transparent;transition:border-color .2s,background .2s}
.btn-ghost:hover{border-color:var(--muted);background:var(--surface)}
.btn-primary:hover{background:#fff}
.btn-gold:hover{background:#ECC173}
nav.main .btn{min-height:40px;padding:8px 18px}
.btn-gold{background:var(--gold);color:#1a1405}
.btn-gold:disabled{opacity:.6;cursor:wait}

/* hero */
.hero,.hero.page-hero{padding:96px 0 72px;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
h1{font-size:clamp(32px,5.2vw,62px);line-height:1.06;letter-spacing:-.035em;font-weight:600}
h1,h2,h3,summary{overflow-wrap:break-word}
h1 .m,h2 .m{color:var(--muted)}
.lede{margin-top:22px;font-size:18px;color:var(--muted);max-width:560px}
.ctas{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap}
.chart{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:20px}
.chart-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:10px}
.chart-title{font-size:14px;font-weight:500}
.tag{font-family:"JetBrains Mono",monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--gold);border:1px solid rgba(227,177,88,.35);border-radius:4px;padding:2px 6px;white-space:nowrap}
.legend{display:flex;flex-wrap:wrap;gap:16px;margin-top:10px;font-size:12px;color:var(--muted)}
.legend i{display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:6px;vertical-align:-1px}

/* sections */
section{padding:96px 0;border-bottom:1px solid var(--line)}
h2{font-size:clamp(28px,3.6vw,44px);line-height:1.12;letter-spacing:-.03em;font-weight:600;max-width:820px}
.sec-label{margin-bottom:18px}
.cols3{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden;margin-top:48px}
.cols3>div{background:var(--ink);padding:28px}
.cols3 h3{font-size:17px;font-weight:600;margin:14px 0 6px}
.cols3 p{color:var(--muted);font-size:15px}
.uc{margin-top:48px;border-top:1px solid var(--line)}
.uc a{display:grid;grid-template-columns:80px 1fr 1.4fr 24px;gap:24px;align-items:center;padding:26px 4px;border-bottom:1px solid var(--line);transition:background .2s}
.uc a:hover{background:var(--surface)}
.uc .n{font-family:"JetBrains Mono",monospace;color:var(--gold);font-size:13px}
.uc .t{font-size:20px;font-weight:600;letter-spacing:-.01em;display:flex;align-items:center;gap:14px}
.uc .d{color:var(--muted);font-size:15px}
.uc .arr{color:var(--dim);transition:transform .2s,color .2s}
.uc a:hover .arr,.uc a:focus-visible .arr{color:var(--gold);transform:translateX(3px)}
.pipe{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:48px}
.step{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:24px}
.step .mono{color:var(--signal)}
.step h3{font-size:17px;margin:12px 0 6px;font-weight:600}
.step p{color:var(--muted);font-size:14px}
.split{display:grid;grid-template-columns:1fr 1.2fr;gap:56px;align-items:start}
.split p{color:var(--muted);margin-top:18px}
.cards{display:grid;gap:12px}
.q{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:18px 20px}
.q-top{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:12px}
.q h3,.q h4{font-size:15px;font-weight:500;line-height:1.4}
.bar{height:6px;background:var(--line);border-radius:4px;overflow:hidden;margin-top:6px}
.bar span{display:block;height:100%;border-radius:4px}
.range{display:flex;justify-content:space-between;gap:8px;font-size:12px;color:var(--muted);margin-top:6px;font-family:"JetBrains Mono",monospace}
.sec4{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:48px}
.sec4>div{border:1px solid var(--line);border-radius:14px;padding:24px;display:flex;gap:16px}
.sec4 svg{flex:none}
.sec4 h3{font-size:16px;font-weight:600}
.sec4 p{color:var(--muted);font-size:14px;margin-top:4px}
.myth{text-align:center;padding:120px 0;border-bottom:1px solid var(--line)}
.myth blockquote{font-size:clamp(24px,3vw,36px);letter-spacing:-.02em;line-height:1.3;max-width:820px;margin:20px auto 0;font-weight:500}
.myth blockquote span{color:var(--gold)}
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:48px}
.post{border:1px solid var(--line);border-radius:14px;padding:24px;background:var(--surface);display:flex;flex-direction:column;gap:10px;transition:border-color .2s}
.post:hover{border-color:var(--dim)}
.post h3{font-size:18px;font-weight:600;letter-spacing:-.01em;line-height:1.3}
.post p{color:var(--muted);font-size:14px}
.post .mono{margin-top:auto}

/* cta + form */
.cta{padding:96px 0}
.cta-box{border:1px solid var(--line);border-radius:20px;padding:56px;display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center;background:linear-gradient(180deg,var(--surface),var(--ink))}
.cta-box p{color:var(--muted);margin-top:14px}
.form{display:grid;gap:6px}
.form label{font-size:13px;color:var(--muted);margin-top:10px}
.form>label:first-child{margin-top:0}
.form input,.form select,.form textarea{width:100%;min-height:46px;background:var(--ink);border:1px solid var(--field);border-radius:10px;padding:12px 14px;color:var(--text);font:inherit;font-size:16px}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--gold)}
.form [aria-invalid="true"]{border-color:var(--risk)}
.form textarea{min-height:110px;resize:vertical}
.form .check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted);margin-top:14px;cursor:pointer}
.form .check input{width:20px;height:20px;min-height:0;flex:none;margin-top:1px;accent-color:var(--gold);cursor:pointer}
.form .check input[aria-invalid="true"]{outline:2px solid var(--risk);outline-offset:2px}
.form button{margin-top:12px;width:100%}
.form .check a{color:var(--text);text-decoration:underline}
.form small{color:var(--dim);font-size:12px;line-height:1.5}
.form .hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-msg{font-size:14px;min-height:1.4em;margin-top:4px}
.form-msg:empty{min-height:0;margin:0}
.form-msg.ok{color:var(--signal)}
.form-msg.err{color:var(--risk)}

/* inner pages */
.page-hero{padding:56px 0 56px;border-bottom:1px solid var(--line)}
.crumbs{font-size:13px;color:var(--dim);margin-bottom:28px}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px}
.crumbs li+li::before{content:"/";margin-right:8px;color:var(--dim)}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--text)}
.page-hero .lede{max-width:720px}
.prose{max-width:700px;padding:64px 0 96px}
.page-hero .ctas{margin-top:28px}
.prose h2{font-size:clamp(22px,2.6vw,30px);margin:48px 0 14px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:18px;font-weight:600;margin:28px 0 8px}
.prose p,.prose li{color:#C5CBD7;font-size:17px;line-height:1.75}
.prose p+p{margin-top:16px}
.prose ul,.prose ol{margin:12px 0 12px 22px}
.prose li+li{margin-top:6px}
.prose a{color:var(--gold);text-decoration:underline;text-underline-offset:3px}
.prose strong{color:var(--text)}
.prose table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px}
.prose th,.prose td{border-bottom:1px solid var(--line);padding:10px 8px;text-align:left;color:#C5CBD7}
.prose th{color:var(--text);font-weight:500}
.note{border:1px solid var(--line);border-left:3px solid var(--gold);border-radius:8px;padding:16px 18px;margin:24px 0;color:var(--muted);font-size:15px;background:var(--surface)}
.sources{margin-top:48px;padding-top:24px;border-top:1px solid var(--line)}
.sources li{font-size:14px}
.todo{background:rgba(227,177,88,.12);border:1px dashed var(--gold);color:var(--gold);border-radius:4px;padding:0 6px;font-size:.9em}
.meta{display:flex;gap:16px;flex-wrap:wrap;margin-top:18px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;font-weight:500;font-size:17px;list-style:none;display:flex;justify-content:space-between;gap:16px;padding:18px 0}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:#fff}
.faq summary::after{content:"+";color:var(--gold);flex:none}
.faq details[open] summary::after{content:"−"}
.faq details p{margin:-6px 0 20px}
.related{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:20px}
.related a{border:1px solid var(--line);border-radius:12px;padding:16px 18px;text-decoration:none;color:var(--text);font-size:15px;transition:border-color .2s,background .2s}
.related a:hover{border-color:var(--dim);background:var(--surface)}

footer.site{padding:56px 0 40px;color:var(--muted);font-size:14px}
.foot{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:32px}
.foot h2{font-size:12px;color:var(--text);font-weight:500;margin-bottom:12px;letter-spacing:0}
.foot a{display:block;padding:4px 0;margin:2px 0}
.foot a.logo{display:flex;padding:0;margin:0;color:var(--text)}
.foot a:hover{color:var(--text)}
.legal{margin-top:40px;padding-top:24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--dim);font-size:13px}

@media (max-width:860px){
  .links{display:none}
  nav.main{gap:12px}
  .lang{margin-left:auto}
  nav.main .btn-primary{display:none}
  .wrap{padding:0 16px}
  .hero,.hero.page-hero{padding:48px 0 56px}
  .hero-grid,.split,.cta-box{grid-template-columns:1fr}
  .hero-grid{gap:40px}
  .cols3,.sec4,.posts,.related{grid-template-columns:1fr}
  .pipe{grid-template-columns:1fr 1fr;gap:12px}
  .uc a{grid-template-columns:36px 1fr 18px;grid-template-areas:"n t a" ". d a";column-gap:12px;row-gap:6px;padding:20px 0}
  .uc .n{grid-area:n}.uc .t{grid-area:t;font-size:18px;gap:12px}.uc .d{grid-area:d;font-size:14px}.uc .arr{grid-area:a}
  .uc .aicon{width:32px;height:32px}
  .photo-band img{aspect-ratio:16/9}
  .page-hero{padding:40px 0 48px}
  .crumbs{margin-bottom:20px}
  .cta-box{padding:28px}
  .foot{grid-template-columns:1fr 1fr}
  .foot>div:first-child{grid-column:1/-1}
  section{padding:64px 0}
  .myth{padding:72px 0}
  .prose{padding:40px 0 64px}
  .prose p,.prose li{font-size:16.5px;line-height:1.7}
  .foot a{padding:8px 0;margin:0}
}
@media (max-width:520px){
  .pipe{grid-template-columns:1fr}
  .ctas .btn{width:100%}
  .step{padding:20px}
}

/* mobile menu */
.menu{display:none;position:relative}
.menu summary{list-style:none;cursor:pointer;border:1px solid var(--line);border-radius:999px;min-height:36px;display:flex;align-items:center;gap:6px;padding:0 14px;font-size:13px;color:var(--text)}
.menu summary::after{content:"";width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:translateY(-2px) rotate(45deg);transition:transform .2s}
.menu[open] summary::after{transform:translateY(1px) rotate(-135deg)}
.menu summary::-webkit-details-marker{display:none}
.menu .panel{position:absolute;right:0;top:44px;z-index:20;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px;display:grid;min-width:220px;box-shadow:0 20px 40px rgba(0,0,0,.4)}
.menu .panel a{padding:12px;border-radius:8px;font-size:15px;color:var(--muted)}
.menu .panel a:hover,.menu .panel a[aria-current]{background:var(--panel);color:var(--text)}
.menu .panel a.btn{margin-top:8px;color:#1a1405;background:var(--gold);justify-content:center}
@media (max-width:860px){.menu{display:block}}

/* ---------- animated icons ---------- */
.aicon{width:40px;height:40px;color:var(--text);flex:none;overflow:visible}
.aicon-lg{width:52px;height:52px}
.ai-flicker{transform-origin:24px 40px;animation:ai-flicker 2.4s ease-in-out infinite}
.ai-flicker2{transform-origin:24px 40px;animation:ai-flicker 1.6s ease-in-out infinite reverse}
@keyframes ai-flicker{0%,100%{transform:scaleY(1) skewX(0)}30%{transform:scaleY(1.06) skewX(-2deg)}60%{transform:scaleY(.96) skewX(2deg)}}
.ai-drift{animation:ai-dash 3s linear infinite}
.ai-flow{animation:ai-dash 1.6s linear infinite}
.ai-delay{animation-delay:-.8s}
@keyframes ai-dash{to{stroke-dashoffset:-16}}
.ai-drop{animation:ai-drop 2.6s ease-in-out infinite}
@keyframes ai-drop{0%,15%{transform:translateY(-4px);opacity:0}35%{opacity:1}60%,100%{transform:translateY(6px);opacity:0}}
.ai-heat{animation:ai-rise 2.2s ease-in-out infinite}
@keyframes ai-rise{0%{transform:translateY(3px);opacity:0}50%{opacity:1}100%{transform:translateY(-4px);opacity:0}}
.ai-draw{stroke-dasharray:100;stroke-dashoffset:100;animation:ai-draw 3.2s ease-in-out infinite}
@keyframes ai-draw{0%{stroke-dashoffset:100}50%,80%{stroke-dashoffset:0}100%{stroke-dashoffset:-100}}
.ai-pulse{transform-box:fill-box;transform-origin:center;animation:ai-pulse 2.4s ease-in-out infinite}
@keyframes ai-pulse{0%,100%{opacity:.5;transform:scale(.9)}50%{opacity:1;transform:scale(1.08)}}
.ai-spin{transform-origin:24px 23px;animation:ai-spin 9s linear infinite}
@keyframes ai-spin{to{transform:rotate(360deg)}}
.ai-shackle{animation:ai-shackle 3s ease-in-out infinite}
@keyframes ai-shackle{0%,70%,100%{transform:translateY(0)}80%{transform:translateY(-3px)}}
.ai-scan{animation:ai-scan 2.8s ease-in-out infinite}
@keyframes ai-scan{0%{transform:translateY(0);opacity:0}15%{opacity:1}85%{opacity:1}100%{transform:translateY(26px);opacity:0}}
/* hero chart: draw the observed line, breathe the bands */
.chart .obs{stroke-dasharray:400;stroke-dashoffset:400;animation:obs-draw 2.2s ease-out .3s forwards}
@keyframes obs-draw{to{stroke-dashoffset:0}}
.chart .band{transform-origin:250px 150px;animation:band 4.6s ease-in-out .4s 1}
@keyframes band{0%,100%{transform:scaleY(1)}50%{transform:scaleY(1.06)}}
.chart .now-dot{animation:ai-pulse 2s ease-in-out -1s 2;transform-box:fill-box;transform-origin:center}
/* WCAG 2.2.2: icon loops are paused on a visible frame and play only while
   their card or link is hovered or focused. Negative delays pick that frame. */
.aicon *{animation-play-state:paused}
.ai-drop{animation-delay:-.95s}
.ai-heat{animation-delay:-1.1s}
.ai-scan{animation-delay:-1.3s}
.ai-draw{animation-delay:-2.1s}
.ai-pulse{animation-delay:-1.2s}
:is(a,.step,.cols3>div,.sec4>div):is(:hover,:focus-within) .aicon *{animation-play-state:running}
/* icon placement */
.uc a .ico{color:var(--muted);transition:color .2s}
.uc a:hover .ico{color:var(--text)}
.step .aicon,.cols3 .aicon{margin-bottom:12px}
@media (prefers-reduced-motion:reduce){
  .aicon *,.chart *{animation:none!important;stroke-dashoffset:0!important}
}

/* ---------- photos ---------- */
.photo{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line);background:var(--surface)}
.photo img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}
.photo figcaption{position:absolute;left:0;right:0;bottom:0;padding:18px 14px 8px;font-size:12px;color:#D5DAE3;background:linear-gradient(0deg,rgba(10,13,19,.92) 40%,transparent)}
.photo figcaption a{text-decoration:underline}
.photo.tint img{filter:saturate(.85) contrast(1.05)}
.photo-band{margin-top:40px}
.uc-card-img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;display:block}
.page-hero.has-photo{position:relative;overflow:hidden}
.page-hero.has-photo .bg{position:absolute;inset:0;z-index:0}
.page-hero.has-photo .bg img{width:100%;height:100%;object-fit:cover;opacity:.28}
.page-hero.has-photo .bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--ink) 35%,rgba(10,13,19,.55))}
.page-hero.has-photo .wrap{position:relative;z-index:1}
.post .photo{margin:-24px -24px 6px;border:0;border-radius:14px 14px 0 0}
.post .photo img{aspect-ratio:16/9}
.prose .photo{margin:0 0 32px}
.hero.has-photo .bg img{opacity:.22}
.photo-band img{aspect-ratio:21/8}
@media (max-width:860px){.photo-band img{aspect-ratio:16/9}}