:root { --paper: #eee5d5; --ink: #111015; --purple: #6d25b4; --purple2: #8d43d4; --line: #5d5553; --max: 1500px; }
* { box-sizing: border-box; }
html { max-width: 100%; overflow-x: hidden; scroll-behavior: smooth; background: rgb(0, 0, 0); }
body { max-width: 100%; margin: 0px; overflow-x: hidden; background: rgb(0, 0, 0); color: var(--ink); font-family: Arial, Helvetica, sans-serif; }
img { display: block; max-width: 100%; }
a { color: inherit; }
.skip-link { position: fixed; left: 12px; top: 10px; z-index: 1000; transform: translateY(-180%); background: rgb(255, 255, 255); color: rgb(17, 17, 17); padding: 9px 13px; font-weight: 800; text-decoration: none; }
.skip-link:focus { transform: none; }
.concepts-header { position: sticky; top: 0px; z-index: 100; max-width: var(--max); height: 64px; margin: 0px auto; padding: 0px 34px; display: flex; align-items: center; background: rgba(13, 8, 20, 0.96); border-inline: 1px solid rgb(40, 32, 44); border-bottom: 1px solid rgba(255, 255, 255, 0.16); color: rgb(255, 255, 255); backdrop-filter: blur(10px); }
.concepts-publisher-mark { width: 44px; height: 52px; display: grid; place-items: center; text-decoration: none; }
.concepts-publisher-mark img { display: block; width: 100%; height: 100%; object-fit: contain; filter: drop-shadow(rgba(0, 191, 255, 0.24) 0px 0px 7px); }
.concepts-site-nav { margin-left: auto; display: flex; align-items: center; gap: 30px; }
.concepts-site-nav a { position: relative; color: rgb(255, 255, 255); text-decoration: none; text-transform: uppercase; font-size: 12px; font-weight: 900; letter-spacing: 0.08em; padding: 24px 0px 21px; }
.concepts-site-nav a::after { content: ""; position: absolute; left: 0px; right: 0px; bottom: 12px; height: 2px; background: rgb(141, 67, 212); transform: scaleX(0); transform-origin: left center; transition: transform 0.2s; }
.concepts-site-nav a:hover::after, .concepts-site-nav a:focus-visible::after, .concepts-site-nav a.active::after { transform: scaleX(1); }
.concepts-menu-toggle { display: none; margin-left: auto; border: 1px solid rgba(255, 255, 255, 0.45); background: transparent; color: rgb(255, 255, 255); padding: 8px 12px; text-transform: uppercase; font-weight: 900; }
.vc-page { max-width: var(--max); margin: 0px auto; background: var(--paper) url("../shared/paper-background.svg") center top/cover repeat-y; border-inline: 1px solid rgb(40, 32, 44); }
.vc-hero { position: relative; display: grid; grid-template-columns: 29% 71%; min-height: 420px; border-bottom: 7px solid rgb(17, 17, 17); overflow: hidden; }
.vc-hero-copy { padding: 54px 26px 24px 42px; position: relative; z-index: 2; overflow: visible; }
.vc-logo { display: block; width: 100%; max-width: 420px; overflow: visible; }
.vc-intro { font-size: 17px; line-height: 1.42; max-width: 330px; margin: 8px 0px 17px; font-weight: 600; }
.vc-btn { display: inline-flex; align-items: center; gap: 12px; background: rgb(17, 17, 17); color: rgb(255, 255, 255); text-decoration: none; text-transform: uppercase; font-weight: 900; padding: 12px 18px; box-shadow: 7px 7px 0 var(--purple); font-size: 14px; }
.vc-hero-art { min-width: 0px; height: 100%; position: relative; }
.vc-hero-art picture, .vc-hero-art img { width: 100%; height: 100%; object-fit: cover; }
.vc-section { padding: 16px 38px; }
.vc-ribbon { height: 46px; width: auto; max-width: 360px; object-fit: contain; object-position: left center; margin-bottom: 8px; }
.vc-ribbon.featured { max-width: 470px; }
.vc-ribbon-text { display: inline-flex; align-items: center; height: auto; min-height: 36px; width: auto; max-width: none; padding: 6px 22px 5px 18px; background: rgb(17, 16, 21); color: rgb(255, 255, 255); font-family: Impact, "Arial Narrow", Arial, sans-serif; font-size: 20px; line-height: 1; text-transform: uppercase; letter-spacing: 0.4px; transform: skewX(-4deg); box-shadow: rgba(0, 0, 0, 0.16) 4px 4px 0px; clip-path: polygon(0px 8%, 100% 0px, 96% 100%, 2% 92%); }
.vc-rule { height: 1px; background: rgb(34, 29, 32); margin: -22px 0px 12px 200px; }
.services { display: grid; grid-template-columns: repeat(6, 1fr); padding: 2px 0px 8px; }
.service { display: grid; grid-template-columns: 66px 1fr; gap: 8px; padding: 7px 16px; border-right: 1px solid rgb(170, 164, 160); min-width: 0px; }
.service:last-child { border-right: 0px; }
.service img { width: 60px; height: 60px; object-fit: contain; }
.service h3 { font-size: 13px; line-height: 1.05; color: rgb(87, 32, 157); text-transform: uppercase; margin: 4px 0px 8px; }
.service p { font-size: 11px; line-height: 1.3; margin: 0px; }
.featured-proof { display: grid; grid-template-columns: 61% 39%; border: 1px solid rgb(90, 83, 82); margin-top: 5px; }
.featured-side { padding: 14px 14px 12px; border-right: 1px solid rgb(90, 83, 82); }
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.card { position: relative; background: rgb(239, 231, 216); border: 1px solid rgb(138, 131, 125); overflow: hidden; }
.card-art { aspect-ratio: 1.18 / 1; overflow: hidden; border-bottom: 1px solid rgb(138, 131, 125); }
.card-art img { width: 100%; height: 100%; object-fit: cover; }
.card-copy { text-align: center; padding: 8px 5px 10px; }
.card-copy h3 { font-size: 11px; text-transform: uppercase; margin: 0px 0px 4px; }
.card-copy p { font-size: 10px; margin: 0px; }
.why { position: relative; isolation: isolate; padding: 12px 20px; background: url("../shared/why-panel.svg") center center / 100% 100% no-repeat; min-height: 250px; overflow: hidden; }
.why::after { content: ""; position: absolute; z-index: -1; right: -2%; bottom: -6%; width: 57%; height: 94%; background: url("../shared/why-v-watermark.svg") right bottom / contain no-repeat; opacity: 0.075; pointer-events: none; }
.why h2 { font: 900 19px / 1 Arial, Helvetica, sans-serif; text-transform: uppercase; margin: 0px 0px 10px; }
.why-list { display: grid; gap: 10px; padding: 0px; margin: 0px; list-style: none; }
.why-list li { position: relative; padding-left: 34px; font-size: 11px; line-height: 1.25; }
.why-list li::before { content: "✓"; position: absolute; left: 0px; top: 0px; color: rgb(101, 35, 166); border: 2px solid rgb(101, 35, 166); border-radius: 50%; width: 17px; height: 17px; line-height: 13px; text-align: center; font-weight: 900; }
.why-list strong { display: block; text-transform: uppercase; }
.vc-footer { position: relative; min-height: 90px; background: url("../footer/footer-desktop.svg") center center / cover no-repeat rgb(21, 11, 32); color: rgb(255, 255, 255); display: grid; grid-template-columns: 300px 1fr 320px; align-items: center; padding: 14px 44px; }
.footer-brand { display: flex; align-items: center; gap: 12px; font-weight: 800; text-transform: uppercase; }
.footer-mark { width: 36px; height: 43px; display: grid; place-items: center; }
.footer-mark img { display: block; width: 100%; height: 100%; object-fit: contain; filter: drop-shadow(rgba(0, 191, 255, 0.22) 0px 0px 7px); }
.footer-brand small { font-size: 9px; }
.footer-nav { display: flex; justify-content: center; gap: 28px; }
.footer-nav a { text-decoration: none; text-transform: uppercase; font-size: 11px; font-weight: 800; }
.footer-meta { text-align: right; font-size: 9px; }
@media (max-width: 1050px) {
  .concepts-header { padding: 0px 20px; }
  .vc-hero { grid-template-columns: 36% 64%; }
  .services { grid-template-columns: repeat(3, 1fr); row-gap: 12px; }
  .service:nth-child(3) { border-right: 0px; }
  .service { border-bottom: 1px solid rgb(187, 179, 170); }
  .featured-proof { grid-template-columns: 1fr; }
  .featured-side { border-right: 0px; border-bottom: 1px solid rgb(90, 83, 82); }
  .vc-footer { grid-template-columns: 1fr; gap: 10px; text-align: center; }
  .footer-brand, .footer-nav { justify-content: center; }
  .footer-meta { text-align: center; }
}
@media (max-width: 700px) {
  .concepts-header { height: 64px; padding: 0 max(16px,env(safe-area-inset-right)) 0 max(16px,env(safe-area-inset-left)); }
  .concepts-publisher-mark { width: 40px; height: 47px; }
  .concepts-menu-toggle { display: block; }
  .concepts-menu-toggle { min-width: 82px; min-height: 44px; padding: 10px 14px; font-size: 13px; letter-spacing: 0.06em; }
  .concepts-site-nav { display: none; position: absolute; left: 0px; right: 0px; top: 64px; margin: 0px; padding: 10px 18px 16px; background: rgb(21, 11, 32); border-bottom: 1px solid rgba(255, 255, 255, 0.18); flex-direction: column; align-items: stretch; gap: 0px; }
  .concepts-site-nav.is-open { display: flex; }
  .concepts-site-nav a { padding: 13px 4px; border-bottom: 1px solid rgba(255, 255, 255, 0.12); }
  .concepts-site-nav a:last-child { border-bottom: 0px; }
  .concepts-site-nav a::after { display: none; }
  .vc-page { border: 0px; }
  .vc-hero { display: block; }
  .vc-hero-copy { padding: 24px 18px 22px; }
  .vc-logo { width: min(100%, 330px); max-width: 100%; height: auto; }
  .vc-intro { max-width: none; margin: 12px 0px 20px; font-size: 15px; line-height: 1.5; }
  .vc-btn { min-height: 48px; padding: 13px 16px; font-size: 13px; }
  .vc-hero-art { height: auto; aspect-ratio: 1.13 / 1; overflow: hidden; }
  .vc-hero-art picture { display: block; height: 100%; }
  .vc-hero-reference { object-position: 58% center; }
  .vc-section { padding: 16px; }
  .services { grid-template-columns: repeat(2, 1fr); }
  .service { grid-template-columns: 55px 1fr; padding: 10px 8px; }
  .service:nth-child(2n) { border-right: 0px; }
  .service:nth-child(3) { border-right: 1px solid rgb(170, 164, 160); }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .why { min-height: 320px; }
  .why::after { width: 72%; height: 68%; opacity: 0.055; }
  .vc-footer { min-height: 300px; background-image: url("../footer/footer-mobile.svg"); background-size: cover; padding: 30px 18px; }
  .footer-nav { flex-wrap: wrap; }
}
@media (max-width: 430px) {
  .services, .cards { grid-template-columns: 1fr; }
  .service { border-right: 0px !important; }
}
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0px; margin: -1px; overflow: hidden; clip: rect(0px, 0px, 0px, 0px); white-space: nowrap; border: 0px; }
.vc-hero-art picture, .vc-hero-art img { width: 100%; height: 100%; }
.vc-hero-reference { object-fit: cover; object-position: 50% center; }
@media (min-width: 1051px) {
  .vc-hero { grid-template-columns: 27% 73%; min-height: 390px; height: 390px; }
  .vc-hero-copy { padding: 22px 12px 18px 32px; overflow: visible; }
  .vc-logo { width: calc(100% - 4px); max-width: 478px; transform: none; overflow: visible; }
  .vc-intro { max-width: 318px; margin-top: -2px; margin-bottom: 14px; }
  .vc-btn { box-shadow: rgb(109, 37, 180) 5px 5px 0px; }
  .service img { width: 70px; height: 70px; }
  .service { grid-template-columns: 76px 1fr; padding: 5px 12px 4px; }
  .service h3 { font-size: 13.5px; font-weight: 900; margin: 3px 0px 5px; }
  .service p { line-height: 1.2; }
  .featured-side { padding: 11px; }
  .cards { gap: 7px; }
  .card { border-color: rgb(117, 109, 104); box-shadow: rgba(32, 24, 34, 0.16) 2px 3px 0px; }
  .card-art { aspect-ratio: 1.08 / 1; border-bottom-color: rgb(117, 109, 104); }
  .card-copy { padding: 7px 4px 8px; }
  .why { padding: 16px 24px; }
  .why h2 { font-size: 21px; margin-bottom: 12px; }
  .why-list { gap: 11px; }
  .vc-footer { min-height: 84px; padding: 12px 42px; grid-template-columns: 270px 1fr 300px; }
}
@media (max-width: 1050px) {
  .vc-hero-art picture, .vc-hero-art img { object-fit: cover; }
}
@media (max-width: 700px) {
  .vc-logo { transform: none; }
  .vc-ribbon-text { font-size: 17px; min-height: 32px; }
}
@media (max-width: 520px) {
  .vc-hero-copy { padding: 22px 16px 20px; }
  .vc-logo { width: min(88vw, 306px); }
  .vc-intro { font-size: clamp(14px, 4vw, 15px); line-height: 1.48; }
  .vc-btn { display: flex; width: 100%; justify-content: center; gap: 10px; box-shadow: 5px 5px 0 var(--purple); }
  .vc-hero-art { aspect-ratio: 1.08 / 1; }
  .vc-section { padding: 16px; }
  .vc-ribbon-text { max-width: 65%; padding-inline: 16px; font-size: 16px; }
  .vc-rule { margin-left: 150px; }
  .services, .cards { grid-template-columns: 1fr; }
  .services { row-gap: 0px; }
  .service { min-height: 78px; grid-template-columns: 54px 1fr; gap: 10px; padding: 11px 6px; border-bottom: 1px solid rgb(187, 179, 170); border-right: 0px !important; }
  .service:last-child { border-bottom: 0px; }
  .service img { width: 50px; height: 50px; }
  .service h3 { font-size: 14px; margin: 3px 0px 5px; }
  .service p { font-size: 12px; }
  .cards { gap: 12px; }
  .card-art { aspect-ratio: 1.35 / 1; }
  .card-copy h3 { font-size: 12px; }
  .card-copy p { font-size: 11px; }
  .why { min-height: 0px; padding: 20px 16px 24px; }
  .why h2 { font-size: 18px; line-height: 1.1; }
  .why-list li { font-size: 12px; line-height: 1.35; }
  .vc-footer { min-height: 260px; padding: 26px 16px calc(26px + env(safe-area-inset-bottom)); }
  .footer-nav { gap: 16px 20px; }
}

/* Concepts structural pass v1 — stable production shell matching the approved reference. */
:root{--max:1320px}
.concepts-header,.vc-page{width:calc(100% - 28px);max-width:1320px}
.concepts-header{height:66px;padding:0 18px}
.vc-hero{grid-template-columns:30% 70%;height:400px;min-height:400px;border-bottom-width:6px}
.vc-hero-copy{padding:24px 22px 20px 32px}.vc-logo{max-width:430px}.vc-intro{max-width:340px;font-size:15px;line-height:1.4}
.vc-section{padding:14px 28px}.services{padding-bottom:6px}.service{padding-inline:10px}
.featured-proof{grid-template-columns:61% 39%;margin-top:3px}.featured-side{padding:11px}.why{min-height:248px}
.vc-footer{min-height:58px;padding:7px 26px;grid-template-columns:250px 1fr 270px;background:linear-gradient(115deg,#100719,#291034 55%,#09050e)}
.footer-mark{width:35px;height:41px}.footer-nav{gap:24px}.footer-nav a{font-size:10px}.footer-meta{font-size:8px}
@media(max-width:1050px) and (min-width:701px){
  .vc-hero{grid-template-columns:36% 64%;height:430px}
  .vc-hero-copy{padding:30px 20px 22px 28px}
  .vc-section{padding-inline:22px}
  .featured-proof{grid-template-columns:1fr}.featured-side{border-right:0;border-bottom:1px solid #5a5352}
  .vc-footer{min-height:68px;grid-template-columns:190px 1fr 190px;gap:10px;padding-inline:20px;text-align:left}
  .footer-brand{justify-content:flex-start}.footer-nav{justify-content:center;gap:14px}.footer-meta{text-align:right}
}
@media(max-width:700px){
  .concepts-header,.vc-page{width:100%}
  .vc-hero{display:block;height:auto;min-height:0}
  .vc-hero-copy{padding:22px 16px 20px}
  .vc-hero-art{height:auto!important;aspect-ratio:1.5/1!important;overflow:hidden;background:#120b19}
  .vc-hero-art picture,.vc-hero-art img{display:block;width:100%;height:100%!important}
  .vc-hero-reference{object-fit:cover!important;object-position:63% center!important}
  .vc-section{padding:15px 14px}
  .featured-proof{grid-template-columns:1fr}.featured-side{border-right:0;border-bottom:1px solid #5a5352}
  .vc-footer{min-height:190px;grid-template-columns:1fr;gap:12px;padding:24px 16px calc(24px + env(safe-area-inset-bottom));text-align:center}
  .footer-brand,.footer-nav{justify-content:center}.footer-meta{text-align:center}
}
@media(max-width:430px){
  .vc-hero-art{aspect-ratio:1.35/1!important}.vc-hero-reference{object-position:65% center!important}
}


/* Navigation and accessibility QA */
:where(a,button):focus-visible{outline:3px solid #b879f2;outline-offset:4px}
.footer-meta{display:grid;gap:6px;justify-items:end}
.footer-social{display:flex;gap:13px;justify-content:flex-end}
.footer-social a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding-inline:8px;color:#fff;text-decoration:none;text-transform:uppercase;font-size:9px;font-weight:800}
.footer-nav a{display:inline-flex;align-items:center;min-height:44px;padding-block:8px}
@media(max-width:1050px){.footer-meta{justify-items:center}.footer-social{justify-content:center}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}