/* WEB R6C-A · Sites v4-inspired owned implementation, not source parity. Pure CSS + semantic HTML. */
:root{color-scheme:dark;--bg:#070b15;--bg2:#0c1322;--surface:#111a2a;--surface2:#151f31;--stroke:#26334a;--ink:#f2f7ff;--muted:#aab8cb;--accent:#62e1d5;--accent2:#ad9aff;--shadow:0 22px 70px rgba(0,0,0,.24)}
:root[data-theme="light"]{color-scheme:light;--bg:#f4f8fe;--bg2:#fff;--surface:#fff;--surface2:#eef3fb;--stroke:#c8d3e4;--ink:#132037;--muted:#4b607b;--accent:#006d70;--accent2:#5042b4;--shadow:0 22px 70px rgba(34,53,85,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:radial-gradient(ellipse at 70% -12%,rgba(92,101,221,.14),transparent 36%),var(--bg);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Arial,sans-serif}img{max-width:100%;height:auto}a{color:inherit}button{font:inherit;color:inherit}a:focus-visible,button:focus-visible,[tabindex="0"]:focus-visible{outline:3px solid var(--accent);outline-offset:4px}.skip-link{position:absolute;top:-70px;left:16px;padding:10px;background:var(--ink);color:var(--bg);z-index:100}.skip-link:focus{top:12px}.site-shell{max-width:1500px;margin:auto;padding:0 clamp(20px,4vw,68px)}.topbar{display:flex;gap:30px;align-items:center;justify-content:space-between;min-height:100px;border-bottom:1px solid var(--stroke)}.identity{display:flex;align-items:center;gap:14px;text-decoration:none;white-space:nowrap}.identity-mark{font-size:1.6rem;font-weight:850;letter-spacing:-.06em}.accent-mark{color:var(--accent)}.identity-name{font-size:.72rem;letter-spacing:.12em;font-weight:800}.identity-divider{color:var(--accent);margin:0 3px}.topnav{display:flex;align-items:center;gap:clamp(12px,2vw,32px)}.topnav a{text-decoration:none;font-size:.87rem;color:var(--muted);font-weight:650}.topnav a:hover,.text-link:hover,.footer a:hover{color:var(--accent)}.theme-toggle{border:1px solid var(--stroke);border-radius:28px;background:var(--surface);min-height:44px;padding:8px 14px;cursor:pointer;white-space:nowrap}.theme-toggle:hover{border-color:var(--accent)}.section-pad{padding:clamp(56px,7vw,120px) 0}.eyebrow{font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);font-weight:850}.signal-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 14px var(--accent);margin-right:8px}.hero{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(370px,.88fr);align-items:center;gap:clamp(40px,7vw,116px);min-height:670px}.hero h1{font-size:clamp(2.65rem,5vw,5.4rem);line-height:1.09;letter-spacing:-.062em;margin:25px 0}.gradient-text{color:var(--accent);background:linear-gradient(110deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.lead{font-size:clamp(1.05rem,1.6vw,1.25rem);max-width:625px;color:var(--muted)}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:31px 0 36px}.action{display:inline-flex;align-items:center;gap:14px;min-height:48px;padding:12px 22px;border-radius:7px;font-size:.9rem;text-decoration:none;font-weight:800}.action.primary{background:var(--accent);color:var(--bg);border:1px solid var(--accent)}.action.secondary{background:transparent;border:1px solid var(--stroke);color:var(--ink)}.action:hover{filter:brightness(1.08);border-color:var(--accent)}.tech-chips{list-style:none;display:flex;gap:10px;flex-wrap:wrap;margin:0;padding:0}.tech-chips li,.tag-row span{border:1px solid var(--stroke);border-radius:100px;padding:5px 12px;color:var(--muted);font-size:.75rem}.hero-project{position:relative;background:radial-gradient(circle at 50% 22%,rgba(65,95,165,.25),transparent 57%),linear-gradient(150deg,var(--surface2),var(--surface));border:1px solid var(--stroke);border-radius:22px;padding:clamp(24px,3vw,42px);box-shadow:var(--shadow);min-width:0}.hero-project:before{content:"";position:absolute;inset:13px;pointer-events:none;border:1px solid rgba(125,156,205,.08);border-radius:14px}.project-topline,.selector-footer{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:.65rem;font-weight:850;letter-spacing:.14em}.main-emblem{display:block;width:min(66%,260px);margin:28px auto 14px;filter:drop-shadow(0 0 30px rgba(124,115,255,.3))}.hero-project h2{font-size:clamp(1.65rem,3vw,2.5rem);line-height:1.14;letter-spacing:-.035em;margin:0 0 29px}.accent-text{color:var(--accent)}.selector-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:7px}.selector-tab{min-width:0;min-height:44px;border:1px solid var(--stroke);border-radius:7px;background:transparent;color:var(--muted);font-size:clamp(.65rem,.8vw,.81rem);font-weight:750;padding:9px 4px;cursor:pointer;overflow-wrap:anywhere}.selector-tab[aria-selected="true"]{border-color:var(--accent);color:var(--ink);background:rgba(98,225,213,.10)}.selector-tab:hover{border-color:var(--accent)}.selector-detail{display:flex;align-items:center;gap:15px;padding:19px 0;min-height:106px}.selector-detail img{width:54px;height:54px;object-fit:contain}.selector-detail strong{font-size:.96rem}.selector-detail p{font-size:.76rem;color:var(--muted);line-height:1.5;margin:3px 0 0}.selector-footer{border-top:1px solid var(--stroke);padding-top:15px}.selector-footer output{color:var(--accent)}.value-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--stroke);border-bottom:1px solid var(--stroke)}.value-strip>div{padding:27px 15px 27px 5px;display:grid;gap:2px;border-right:1px solid var(--stroke)}.value-strip>div:last-child{border:0}.value-index{color:var(--accent);font-size:.7rem;font-weight:800}.value-strip strong{font-size:1.1rem}.value-strip small{color:var(--muted)}.content-section{border-bottom:1px solid var(--stroke)}.section-head{max-width:940px;margin-bottom:42px}.section-head h2,.closing h2{font-size:clamp(2.2rem,4.5vw,4.4rem);line-height:1.15;letter-spacing:-.05em;margin:14px 0 19px}.section-intro{max-width:760px;font-size:1.08rem;color:var(--muted)}.module-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.module-card,.other-card,.principles-grid article{border:1px solid var(--stroke);background:linear-gradient(155deg,var(--surface2),var(--surface));border-radius:15px;padding:clamp(23px,2.5vw,34px);min-width:0}.module-card img{width:78px;height:78px;object-fit:contain;margin:2px 0 18px}.module-number,.category,.process-number{display:block;color:var(--accent);font-weight:800;font-size:.7rem;letter-spacing:.14em}.module-card h3,.other-card h3{font-size:1.48rem;letter-spacing:-.025em;margin:8px 0}.module-card p,.other-card p,.process-grid p,.principles-grid p{color:var(--muted);margin:0}.module-link{display:block;border-top:1px solid var(--stroke);padding-top:16px;margin-top:30px;color:var(--muted);font-size:.8rem}.architecture-note{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:28px 34px;background:var(--surface);border:1px solid var(--stroke);border-radius:12px;margin-top:24px}.architecture-note h3{font-size:1.35rem;margin:7px 0}.architecture-note p:last-child{margin:0;color:var(--muted)}.note-pill{flex-shrink:0;color:var(--accent);border:1px solid var(--stroke);border-radius:30px;padding:9px 15px;font-size:.72rem;font-weight:800;letter-spacing:.08em}.other-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.other-card{min-height:286px}.tag-row{display:flex;gap:7px;flex-wrap:wrap;margin-top:28px}.feature-card{background:radial-gradient(circle at 100% 0%,rgba(98,225,213,.14),transparent 56%),var(--surface2)}.text-link{display:inline-block;margin-top:25px;font-weight:800;text-decoration:none;color:var(--accent)}.process-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:36px}.process-grid>div{padding:6px 25px 6px 0;border-right:1px solid var(--stroke)}.process-grid>div:last-child{border:0}.process-grid h3{font-size:1.35rem}.principles-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.principle-icon{width:56px;height:56px;border:1px solid var(--stroke);background:rgba(98,225,213,.06);display:grid;place-items:center;font-size:1.35rem;font-weight:900;color:var(--accent);border-radius:12px}.principles-grid h3{margin:18px 0 10px}.closing{text-align:center;max-width:850px;margin:0 auto}.closing p:not(.eyebrow){color:var(--muted)}.closing .action{margin-top:19px}.footer{padding:34px 0 45px;display:flex;align-items:flex-start;justify-content:space-between;gap:30px;color:var(--muted);border-top:1px solid var(--stroke)}.footer strong{font-size:1.45rem;color:var(--ink)}.footer p{font-size:.78rem}.footer-note{max-width:370px}.footer a{color:var(--muted);text-decoration:none;font-size:.85rem;white-space:nowrap}
@media(max-width:1160px){.topbar{flex-wrap:wrap;padding:20px 0}.topnav{order:3;width:100%;justify-content:flex-start}.hero{grid-template-columns:minmax(0,1fr) minmax(345px,.9fr);gap:35px}.module-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.other-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-card{grid-column:1/-1}}
@media(max-width:790px){.hero{grid-template-columns:1fr;min-height:0}.hero-project{max-width:570px}.value-strip{grid-template-columns:repeat(2,1fr)}.value-strip>div:nth-child(2){border-right:0}.value-strip>div:nth-child(-n+2){border-bottom:1px solid var(--stroke)}.module-grid,.other-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.process-grid{gap:18px}.principles-grid{grid-template-columns:1fr}.architecture-note{align-items:flex-start;flex-direction:column}}
@media(max-width:560px){.identity-name{font-size:.62rem}.topnav{gap:13px;overflow-x:auto;padding-bottom:8px}.topnav a{white-space:nowrap}.theme-label{display:none}.hero-project{padding:22px}.selector-tabs{grid-template-columns:repeat(2,1fr)}.module-grid,.other-grid,.process-grid{grid-template-columns:1fr}.value-strip strong{font-size:1rem}.process-grid>div{border-right:0;border-bottom:1px solid var(--stroke);padding-bottom:20px}.footer{flex-direction:column}.section-pad{padding:65px 0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
@media(prefers-reduced-motion:no-preference){.module-card,.other-card,.principles-grid article{transition:border-color .18s,transform .18s}.module-card:hover,.other-card:hover,.principles-grid article:hover{border-color:var(--accent);transform:translateY(-3px)}}