:root{--bg:#0e1020;--panel:#171a31;--panel2:#222645;--cyan:#20d3ee;--orange:#f04488;--ice:#f4f6fa;--muted:#aeb5ca;--line:#34395f;--ink:#0e1020;--shell:1180px;--radius:12px;--shadow:0 18px 45px rgba(0,0,0,.28)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ice);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:17px;line-height:1.72;-webkit-font-smoothing:antialiased}img{max-width:100%;height:auto}a{color:#65d8e5;text-underline-offset:3px}.shell{width:min(calc(100% - 40px),var(--shell));margin:auto}.screen-reader-text{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.skip-link{position:fixed;z-index:999;left:16px;top:10px;background:var(--orange);color:var(--ink);padding:10px 16px;border-radius:8px;transform:translateY(-160%)}.skip-link:focus{transform:none}.site-header{position:relative;z-index:40;border-bottom:1px solid var(--line);background:#0d131a}.header-row{min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:flex;align-items:center;gap:11px;color:var(--ice);text-decoration:none}.brand img{flex:0 0 auto}.brand span{display:flex;flex-direction:column}.brand strong{font-size:19px;line-height:1.2;letter-spacing:.01em}.brand small{color:var(--muted);font-size:11px;letter-spacing:.06em}.primary-menu,.footer-menu{list-style:none;margin:0;padding:0}.primary-menu{display:flex;align-items:center;gap:2px}.primary-menu a{display:block;color:var(--ice);padding:10px 11px;border-radius:8px;text-decoration:none;font-size:14px;font-weight:700}.primary-menu a:hover,.primary-menu .current-menu-item>a{background:var(--panel2);color:#7de5f0}.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--panel);border-radius:9px}.menu-toggle>span:first-child,.menu-toggle>span:first-child:before,.menu-toggle>span:first-child:after{display:block;width:20px;height:2px;background:var(--ice);content:"";margin:auto}.menu-toggle>span:first-child:before{transform:translateY(-6px)}.menu-toggle>span:first-child:after{transform:translateY(4px)}
.hero{position:relative;overflow:hidden;background:radial-gradient(circle at 75% 35%,rgba(24,183,201,.12),transparent 34%),#10161e;border-bottom:1px solid var(--line)}.hero:after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:38px 38px;mask-image:linear-gradient(to right,transparent,black);pointer-events:none}.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:58fr 42fr;align-items:center;gap:50px;min-height:610px;padding:70px 0}.eyebrow,.kicker{margin:0 0 12px;color:#58d2df;font-size:12px;font-weight:900;letter-spacing:.16em;text-transform:uppercase}.hero h1,.page-hero h1,.archive-hero h1{margin:0;max-width:830px;font-size:clamp(40px,5.3vw,70px);line-height:1.04;letter-spacing:-.045em}.hero-lead{max-width:650px;margin:25px 0 10px;font-size:21px;color:#dce6eb}.hero-note{max-width:680px;color:var(--muted)}.hero-actions{display:flex;flex-wrap:wrap;gap:11px;margin-top:25px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:10px 18px;border:1px solid var(--orange);border-radius:10px;background:var(--orange);color:var(--ink);font-weight:900;text-decoration:none}.button.secondary{background:transparent;color:var(--ice);border-color:var(--line)}.hero-media img{display:block;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);aspect-ratio:16/9;object-fit:cover}.hero-media p{color:var(--muted);font-size:12px}.section{padding:80px 0;border-bottom:1px solid rgba(52,68,82,.7)}.section.alt{background:#0d141b}.section-title{margin:0 0 15px;font-size:clamp(31px,4vw,44px);line-height:1.15;letter-spacing:-.025em}.section-intro{max-width:760px;color:var(--muted);font-size:18px}.question-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:30px}.question-card,.metric-card,.limit-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px}.question-card span{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:8px;background:rgba(24,183,201,.14);color:#6ee2ee;font-weight:900;font-size:12px}.question-card h3,.metric-card h3,.limit-card h3{margin:18px 0 7px;font-size:19px}.question-card p,.metric-card p,.limit-card p{margin:0;color:var(--muted);font-size:15px}.data-split{display:grid;grid-template-columns:1.05fr .95fr;gap:38px;align-items:center;margin-top:32px}.field-board{position:relative;min-height:370px;border:1px solid var(--line);border-radius:20px;background:linear-gradient(135deg,rgba(24,183,201,.08),transparent),var(--panel);overflow:hidden}.field-board:before{content:"";position:absolute;inset:25px;border:1px solid rgba(101,216,229,.45);background:linear-gradient(90deg,transparent 49.8%,rgba(101,216,229,.35) 50%,transparent 50.2%)}.field-board:after{content:"";position:absolute;width:95px;height:95px;border:1px solid rgba(101,216,229,.4);border-radius:50%;left:50%;top:50%;transform:translate(-50%,-50%)}.dot{position:absolute;width:16px;height:16px;border-radius:50%;background:var(--cyan);box-shadow:0 0 14px rgba(24,183,201,.55);z-index:2}.dot.orange{background:var(--orange);box-shadow:0 0 14px rgba(245,158,66,.5)}.method-list{list-style:none;margin:26px 0 0;padding:0;counter-reset:method}.method-list li{counter-increment:method;display:grid;grid-template-columns:42px 1fr;gap:14px;border-top:1px solid var(--line);padding:18px 0}.method-list li:before{content:counter(method);display:grid;place-items:center;width:34px;height:34px;border:1px solid var(--cyan);border-radius:9px;color:#7de5f0;font-weight:900;font-size:13px}.method-list strong{display:block}.method-list p{margin:2px 0 0;color:var(--muted)}.prob-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:30px}.prob-panel{border-left:4px solid var(--orange);background:var(--panel);padding:25px;border-radius:0 var(--radius) var(--radius) 0}.prob-panel h3{margin-top:0}.prob-panel p{color:var(--muted)}.demo-lab{margin-top:30px;border:1px solid var(--line);border-radius:20px;background:var(--panel);padding:25px}.demo-label{display:inline-flex;border:1px solid var(--orange);border-radius:999px;padding:4px 10px;color:#ffc382;font-size:12px;font-weight:900;text-transform:uppercase;letter-spacing:.1em}.demo-toolbar{display:flex;gap:9px;margin:20px 0}.demo-toolbar button{min-height:44px;border:1px solid var(--line);border-radius:8px;background:transparent;color:var(--ice);padding:8px 14px;font:inherit;font-weight:800;cursor:pointer}.demo-toolbar button[aria-pressed=true]{background:var(--cyan);color:var(--ink);border-color:var(--cyan)}.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.metric-value{display:block;margin:12px 0 4px;color:#fff;font-size:34px;font-weight:900}.mini-chart{display:flex;align-items:end;gap:10px;height:180px;margin-top:24px;padding:20px;border-top:1px solid var(--line)}.mini-chart span{flex:1;height:var(--bar);min-height:12px;border-radius:5px 5px 0 0;background:linear-gradient(to top,var(--cyan),#73dce7);transition:height .2s}.mini-chart span:nth-child(even){background:linear-gradient(to top,var(--orange),#ffc07c)}.process-grid{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:42px;margin-top:30px}.process-image img{display:block;border:1px solid var(--line);border-radius:18px}.limit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:28px}.limit-card{border-top:4px solid var(--orange)}.term-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:25px}.term-strip a{display:block;background:var(--panel);padding:22px;text-decoration:none}.term-strip strong{display:block;color:var(--ice);margin-bottom:5px}.term-strip small{color:var(--muted)}.faq-list{margin-top:25px}.faq-list details{border-top:1px solid var(--line)}.faq-list details:last-child{border-bottom:1px solid var(--line)}.faq-list summary{min-height:58px;padding:17px 46px 17px 0;cursor:pointer;font-weight:800;position:relative}.faq-list summary:after{content:"+";position:absolute;right:10px;color:var(--cyan);font-size:22px}.faq-list details[open] summary:after{content:"−"}.faq-list details div{color:var(--muted);padding:0 30px 18px 0}
.page-hero,.archive-hero{padding:70px 0;background:linear-gradient(135deg,#101820,#162531);border-bottom:1px solid var(--line)}.page-hero h1,.archive-hero h1{font-size:clamp(38px,5vw,60px)}.page-hero-lead,.archive-description{max-width:760px;color:var(--muted);font-size:18px;margin:18px 0 0}.post-meta{display:flex;flex-wrap:wrap;gap:8px 16px;color:var(--muted);font-size:13px;margin-top:18px}.archive-body{padding:60px 0}.archive-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.post-card{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:23px}.post-card h2{font-size:23px;line-height:1.3;margin:15px 0 10px}.post-card h2 a{color:var(--ice);text-decoration:none}.post-card p{color:var(--muted);font-size:15px}.read-link{margin-top:auto;font-weight:800}.content-wrap{width:min(calc(100% - 40px),820px);margin:auto;padding:55px 0}.content-panel{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:clamp(25px,5vw,52px)}.entry-content h2{margin:42px 0 13px;font-size:32px;line-height:1.2}.entry-content h2:before{content:"";display:block;width:40px;height:4px;background:var(--orange);border-radius:9px;margin-bottom:12px}.entry-content h3{margin:29px 0 8px;color:#79e1eb;font-size:21px}.entry-content p,.entry-content li{color:#d5e0e5}.entry-content blockquote,.editor-note{border-left:4px solid var(--orange);background:#252d32;padding:18px 20px;margin:25px 0}.entry-content table{width:100%;border-collapse:collapse}.entry-content th,.entry-content td{border:1px solid var(--line);padding:11px;text-align:left}.entry-content th{background:#0e151c}.related-reading{background:var(--panel2);border:1px solid var(--line);border-radius:14px;padding:22px;margin-top:22px}.search-form{display:flex;gap:8px;margin-top:24px;max-width:590px}.search-form label{flex:1}.search-field{width:100%;min-height:48px;border:1px solid var(--line);border-radius:9px;background:var(--panel);color:var(--ice);padding:10px 14px;font:inherit}.search-submit{min-height:48px;border:0;border-radius:9px;background:var(--orange);color:var(--ink);padding:10px 17px;font-weight:900}.site-footer{background:#0a1016;border-top:1px solid var(--line);padding-top:55px}.footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1.1fr;gap:45px}.site-footer h2{font-size:16px;margin-top:0}.site-footer p{color:var(--muted);font-size:14px}.footer-menu li+li{margin-top:7px}.footer-menu a{color:var(--ice)}.age-note{border-left:3px solid var(--orange);padding-left:12px}.footer-base{border-top:1px solid var(--line);margin-top:38px;padding:16px 0}.footer-base p{margin:0}.pagination{margin-top:30px}.nav-links{display:flex;gap:8px}.page-numbers{display:grid;place-items:center;min-width:42px;height:42px;border:1px solid var(--line);border-radius:8px;text-decoration:none}.page-numbers.current{background:var(--cyan);color:var(--ink)}.empty-state{padding:30px;background:var(--panel);border:1px solid var(--line);border-radius:14px}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--orange);outline-offset:3px}@media(max-width:979px){.menu-toggle{display:block}.primary-nav{display:none;position:absolute;top:70px;left:0;right:0;background:#0d131a;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}.primary-nav.is-open{display:block}.primary-menu{display:block;padding:12px 20px 18px}.primary-menu a{padding:13px}.hero-grid{grid-template-columns:1fr;min-height:auto;padding:52px 0}.question-grid{grid-template-columns:repeat(2,1fr)}.archive-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.3fr 1fr}.footer-grid>div:last-child{grid-column:1/-1}}@media(max-width:680px){.shell{width:min(calc(100% - 32px),var(--shell))}.brand strong{font-size:17px}.brand small{font-size:10px}.hero h1{font-size:40px}.hero-lead{font-size:19px}.hero-actions,.search-form{display:grid}.hero-media img{aspect-ratio:4/5;object-position:70% center}.section{padding:52px 0}.question-grid,.prob-grid,.metric-grid,.process-grid,.limit-grid,.archive-grid,.footer-grid{grid-template-columns:1fr}.data-split{grid-template-columns:1fr}.field-board{min-height:300px}.term-strip{grid-template-columns:1fr 1fr}.demo-toolbar{display:grid;grid-template-columns:1fr 1fr}.mini-chart{height:150px;padding-inline:5px}.page-hero,.archive-hero{padding:50px 0}.content-wrap{width:min(calc(100% - 28px),820px);padding:28px 0}.content-panel{padding:22px}.entry-content h2{font-size:27px}.footer-grid>div:last-child{grid-column:auto}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}