/* ============================================================
   Nexlyn — AI Systems shared stylesheet
   Dark + teal Nexlyn brand. Manrope + JetBrains Mono.
   ============================================================ */

:root{
  --bg:#0e1420; --bg2:#141b2d; --bgc:#192033;
  --tp:#f0f4ff; --tb:#c4cde0; --tm:#8a97b0; --tg:#5d6982;
  --brand:#22d3c5; --bh:#6fe3e8; --bp:#e2f8f7;
  --bg1:rgba(34,211,197,.08); --bg2c:rgba(34,211,197,.16);
  --bb:rgba(255,255,255,.10); --bbc:rgba(34,211,197,.22);
  --am:#f59e0b; --amd:rgba(245,158,11,.08); --amr:rgba(245,158,11,.2);
  --rd:#ef4444; --rdd:rgba(239,68,68,.08); --rdr:rgba(239,68,68,.22);
  --f:"Manrope",sans-serif; --fm:"JetBrains Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:var(--f);background:var(--bg);color:var(--tp);overflow-x:hidden;line-height:1.72;font-size:16px}
a,button{font-family:var(--f);cursor:pointer;border:none;background:none;text-decoration:none;color:inherit}
img{display:block;max-width:100%}

/* ── Layout containers ─────────────────────────────────────── */
.C{max-width:1160px;margin:0 auto;padding:0 48px}
.Cs{max-width:780px;margin:0 auto;padding:0 48px}
@media(max-width:900px){.C,.Cs{padding:0 24px}}
@media(max-width:480px){.C,.Cs{padding:0 16px}}
.sec{padding:88px 0;border-top:1px solid var(--bb)}
.sec.tight{padding:64px 0}
.sec.alt{background:var(--bg2)}
@media(max-width:768px){.sec{padding:56px 0}.sec.tight{padding:40px 0}}

/* ── Typography ────────────────────────────────────────────── */
.h1{font-size:clamp(38px,5.5vw,72px);font-weight:800;line-height:1.04;letter-spacing:-.035em;color:var(--tp)}
.h2{font-size:clamp(26px,3.2vw,44px);font-weight:800;line-height:1.08;letter-spacing:-.028em;color:var(--tp)}
.h3{font-size:clamp(18px,2vw,24px);font-weight:700;line-height:1.25;letter-spacing:-.02em;color:var(--tp)}
em{font-style:normal;color:var(--brand)}
.lead{font-size:18px;color:var(--tb);line-height:1.78;font-weight:500;max-width:620px}
.body{font-size:15px;color:var(--tb);line-height:1.8;font-weight:400}
.lbl{font-family:var(--fm);font-size:11px;font-weight:600;letter-spacing:.1em;color:#45e1d5;display:flex;align-items:center;gap:8px;margin-bottom:14px;text-transform:uppercase}
.lbl::before{content:"";display:block;width:14px;height:1px;background:var(--brand);flex-shrink:0}
.sh{margin-bottom:44px}
.sh .h2{margin-bottom:10px}
.sh p{color:var(--tb);font-size:16px;font-weight:500;line-height:1.75;max-width:560px}

/* ── Buttons ───────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:50px;padding:0 32px;background:var(--brand);color:#060c12 !important;font-size:14px;font-weight:700;letter-spacing:.01em;border-radius:5px;transition:all 200ms;white-space:nowrap;text-decoration:none}
.btn:hover{background:var(--bh);transform:translateY(-1px);box-shadow:0 8px 28px rgba(34,211,197,.28)}
.btn.lg{height:54px;padding:0 40px;font-size:15px}
.btn.ghost{background:transparent;color:var(--brand) !important;border:1px solid var(--bbc)}
.btn.ghost:hover{background:var(--bg1);box-shadow:none}

/* ── Hero ──────────────────────────────────────────────────── */
.hero{padding:140px 0 80px;position:relative;overflow:hidden}
.hglow{position:absolute;top:-80px;left:50%;transform:translateX(-50%);width:1100px;height:520px;background:radial-gradient(ellipse at 50% 0%,rgba(34,211,197,.10) 0%,transparent 62%);pointer-events:none}
.hero-inner{position:relative;z-index:2}
.badge{display:inline-flex;align-items:center;gap:10px;font-family:var(--fm);font-size:10px;letter-spacing:.14em;color:var(--brand);background:var(--bg1);border:1px solid var(--bbc);padding:6px 16px;border-radius:3px;margin-bottom:24px;text-transform:uppercase}
.dot{width:6px;height:6px;border-radius:50%;background:var(--brand);animation:blink 2s infinite;flex-shrink:0}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.3}}
.tagline{font-size:18px;color:var(--tb);max-width:620px;margin:14px 0 32px;line-height:1.7}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;margin-top:8px}
@media(max-width:768px){.hero{padding:100px 0 56px}}

/* ── Stack chips ───────────────────────────────────────────── */
.stack-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;background:var(--bg2);border:1px solid var(--bb);border-radius:99px;font-family:var(--fm);font-size:11px;color:var(--tb);letter-spacing:.04em}
.chip::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand);flex-shrink:0;opacity:.7}

/* ── Reveal anim ───────────────────────────────────────────── */
.rv{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
.rv.on{opacity:1;transform:none}
.rv.d1{transition-delay:.1s}.rv.d2{transition-delay:.2s}.rv.d3{transition-delay:.3s}.rv.d4{transition-delay:.4s}

/* ── Index: system gallery cards ───────────────────────────── */
.sys-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:48px}
@media(max-width:860px){.sys-grid{grid-template-columns:1fr}}
.syscard{background:var(--bgc);border:1px solid var(--bb);border-radius:14px;overflow:hidden;display:flex;flex-direction:column;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;cursor:pointer;text-decoration:none;color:inherit;position:relative}
.syscard:hover{transform:translateY(-4px);border-color:var(--bbc);box-shadow:0 24px 64px rgba(0,0,0,.45),0 0 0 1px rgba(34,211,197,.10)}
.syscard:hover .sysimg img{transform:scale(1.04)}
.syscard:hover .sysarrow{transform:translate(6px,-6px);color:var(--brand)}
.sysimg{aspect-ratio:16/10;background:#0b1018;overflow:hidden;border-bottom:1px solid var(--bb);position:relative}
.sysimg img{width:100%;height:100%;object-fit:cover;object-position:top center;transition:transform .35s ease}
.sysmeta{padding:24px 26px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
.sysmeta .lbl{margin-bottom:0;font-size:10px}
.sysname{font-size:22px;font-weight:800;color:var(--tp);letter-spacing:-.02em;line-height:1.2;margin-top:2px}
.systag{font-size:14px;color:var(--tb);line-height:1.55;font-weight:500}
.sysstack{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.sysstack .chip{padding:3px 10px;font-size:10px}
.sysrow{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:14px;border-top:1px solid var(--bb)}
.sysstatus{font-family:var(--fm);font-size:10px;letter-spacing:.1em;color:var(--brand);text-transform:uppercase;display:flex;align-items:center;gap:8px}
.sysstatus .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);animation:blink 2s infinite}
.sysstatus.priv{color:var(--am)} .sysstatus.priv .dot{background:var(--am)}
.sysarrow{font-size:18px;color:var(--tm);transition:transform .25s ease,color .25s ease}

/* ── Detail page: clean single-column screenshot showcase ── */
.show{display:flex;flex-direction:column;gap:48px;margin-top:48px}
.shot{background:var(--bgc);border:1px solid var(--bb);border-radius:14px;overflow:hidden;max-width:900px;margin-left:auto;margin-right:auto}
.shot-frame{padding:14px 14px 0;background:linear-gradient(180deg,#0b1018 0%,#0b1018 100%);border-bottom:1px solid var(--bb)}
.shot-bar{display:flex;align-items:center;gap:8px;padding:8px 4px 12px}
.shot-bar .d{width:10px;height:10px;border-radius:50%}
.shot-bar .d.r{background:#ff5f57}.shot-bar .d.y{background:#ffbd2e}.shot-bar .d.g{background:#28c840}
.shot-bar .u{flex:1;text-align:center;font-family:var(--fm);font-size:10px;color:var(--tm);background:rgba(255,255,255,.04);border:1px solid var(--bb);border-radius:4px;padding:3px 12px;margin:0 12px;letter-spacing:.04em}
.shot-img{background:#0b1018}
.shot-img img{width:100%;display:block;image-rendering:-webkit-optimize-contrast;image-rendering:crisp-edges}
.shot-cap{padding:18px 24px;display:flex;align-items:center;justify-content:space-between;gap:18px;font-size:13px;color:var(--tm);flex-wrap:wrap}
.shot-cap b{color:var(--tp);font-weight:600;font-size:14px}

/* ── Problem / outcome two-card panel ──────────────────────── */
.po-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:32px}
@media(max-width:860px){.po-grid{grid-template-columns:1fr}}
.po-card{background:var(--bgc);border:1px solid var(--bb);border-radius:12px;padding:30px 32px;position:relative;overflow:hidden}
.po-card.problem{border-top:3px solid #ef4444}
.po-card.outcome{border-top:3px solid var(--brand)}
.po-card .lbl{margin-bottom:14px}
.po-card.problem .lbl{color:#fca5a5}
.po-card.problem .lbl::before{background:#ef4444}
.po-card h3{font-size:20px;font-weight:700;margin-bottom:10px;color:var(--tp);line-height:1.3;letter-spacing:-.01em}
.po-card p{font-size:15px;color:var(--tb);line-height:1.75}

/* ── Bullet list ───────────────────────────────────────────── */
.bullets{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--bb);border:1px solid var(--bb);border-radius:12px;overflow:hidden;margin-top:32px}
@media(max-width:768px){.bullets{grid-template-columns:1fr}}
.bullet{background:var(--bgc);padding:24px 26px;transition:background .2s}
.bullet:hover{background:var(--bg2)}
.bullet-num{font-family:var(--fm);font-size:11px;font-weight:700;color:var(--brand);margin-bottom:10px;letter-spacing:.08em}
.bullet-title{font-size:15px;font-weight:700;color:var(--tp);margin-bottom:6px;letter-spacing:-.01em}
.bullet-desc{font-size:13.5px;color:var(--tb);line-height:1.65}

/* ── Outcome metrics row ───────────────────────────────────── */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:32px}
@media(max-width:860px){.metrics{grid-template-columns:repeat(2,1fr)}}
.metric{background:var(--bgc);border:1px solid var(--bb);border-radius:10px;padding:24px 22px;text-align:left;position:relative;overflow:hidden}
.metric::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--brand) 40%,transparent)}
.metric-val{font-family:var(--fm);font-size:32px;font-weight:700;color:var(--brand);letter-spacing:-.04em;line-height:1;margin-bottom:8px}
.metric-lbl{font-size:12px;color:var(--tb);font-weight:500;letter-spacing:.01em;line-height:1.5}

/* ── Architecture flow ─────────────────────────────────────── */
.flow{display:flex;gap:8px;align-items:stretch;flex-wrap:wrap;margin-top:32px;padding:24px;background:var(--bgc);border:1px solid var(--bb);border-radius:12px}
.flow-step{flex:1;min-width:140px;background:var(--bg);border:1px solid var(--bb);border-radius:8px;padding:16px;display:flex;flex-direction:column;gap:6px}
.flow-icon{font-family:var(--fm);font-size:14px;color:var(--brand);margin-bottom:4px}
.flow-name{font-size:13px;font-weight:700;color:var(--tp);letter-spacing:-.01em}
.flow-desc{font-size:11px;color:var(--tm);line-height:1.5}
.flow-sep{align-self:center;color:var(--brand);font-size:14px;opacity:.6}

/* ── Bottom CTA ────────────────────────────────────────────── */
.bcta{padding:88px 0;text-align:center;position:relative;overflow:hidden;border-top:1px solid var(--bb)}
.bcta::before{content:"";position:absolute;bottom:-40px;left:50%;transform:translateX(-50%);width:600px;height:220px;background:radial-gradient(ellipse,var(--bg1) 0%,transparent 70%);pointer-events:none}
.bcta .h2{margin-bottom:16px;position:relative;z-index:2}
.bcta .lead{margin:0 auto 28px;position:relative;z-index:2;text-align:center}
.bcta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative;z-index:2}

/* ── Live frame ────────────────────────────────────────────── */
.live-frame{margin-top:32px;background:var(--bgc);border:1px solid var(--bb);border-radius:14px;overflow:hidden;position:relative}
.live-frame iframe{width:100%;height:720px;border:0;background:#0b1018;display:block}
.live-meta{display:flex;justify-content:space-between;align-items:center;padding:14px 22px;border-top:1px solid var(--bb);font-size:13px;color:var(--tm);flex-wrap:wrap;gap:14px}
.live-meta b{color:var(--tp);font-weight:600}
@media(max-width:768px){.live-frame iframe{height:520px}}

/* Click-to-load facade — saves ~600 KB and ~1-2 s of LCP */
.lf-facade{position:relative;display:block;width:100%;height:520px;border:0;padding:0;cursor:pointer;background:#0b1018;overflow:hidden;text-align:center}
@media(max-width:768px){.lf-facade{height:380px}}
.lf-facade img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:top center;opacity:.45;filter:blur(1px) saturate(.9);transition:opacity .25s ease, transform .35s ease}
.lf-facade .lf-grad{position:absolute;inset:0;background:radial-gradient(ellipse at 50% 30%,rgba(34,211,197,.18) 0%,transparent 60%),linear-gradient(135deg,#0b1018 0%,#141b2d 100%)}
.lf-facade .lf-overlay{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;height:100%;color:var(--tp);font-family:var(--f);gap:8px;background:linear-gradient(180deg,rgba(14,20,32,.15) 0%,rgba(14,20,32,.55) 100%)}
.lf-facade .lf-play{display:flex;align-items:center;justify-content:center;width:72px;height:72px;border-radius:50%;background:var(--brand);color:#060c12;font-size:28px;font-weight:700;box-shadow:0 12px 40px rgba(34,211,197,.45),0 0 0 8px rgba(34,211,197,.10);transition:transform .25s ease, box-shadow .25s ease;padding-left:4px}
.lf-facade .lf-text{font-size:18px;font-weight:700;letter-spacing:-.01em;margin-top:14px}
.lf-facade .lf-sub{font-family:var(--fm);font-size:11px;color:var(--brand);letter-spacing:.14em;text-transform:uppercase}
.lf-facade:hover img{opacity:.6;transform:scale(1.02)}
.lf-facade:hover .lf-play{transform:scale(1.06);box-shadow:0 16px 48px rgba(34,211,197,.55),0 0 0 10px rgba(34,211,197,.14)}
.lf-facade:focus-visible{outline:2px solid var(--brand);outline-offset:-2px}

/* ── Index hero list ───────────────────────────────────────── */
.idx-stats{display:flex;gap:24px;margin-top:36px;flex-wrap:wrap;font-family:var(--fm)}
.idx-stat{display:flex;flex-direction:column;gap:4px;padding-right:24px;border-right:1px solid var(--bb)}
.idx-stat:last-child{border-right:0;padding-right:0}
.idx-stat-val{font-size:24px;font-weight:700;color:var(--brand);letter-spacing:-.02em}
.idx-stat-lbl{font-size:11px;color:var(--tm);letter-spacing:.08em;text-transform:uppercase}

/* ── System picker / quiz ──────────────────────────────────── */
.quiz{background:linear-gradient(180deg,rgba(34,211,197,.04) 0%,transparent 100%),var(--bgc);border:1px solid var(--bb);border-radius:16px;padding:40px 42px;margin:0 0 48px;position:relative;overflow:hidden}
.quiz::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--brand) 50%,transparent)}
@media(max-width:768px){.quiz{padding:28px 22px}}
.quiz-head{margin-bottom:32px;max-width:640px}
.quiz-title{font-size:clamp(22px,2.6vw,30px);font-weight:800;letter-spacing:-.02em;color:var(--tp);line-height:1.2;margin-bottom:6px}
.quiz-sub{font-size:14px;color:var(--tb);line-height:1.65}
.quiz-q{margin-bottom:28px}
.quiz-q-label{font-family:var(--fm);font-size:10px;color:var(--brand);letter-spacing:.14em;text-transform:uppercase;margin-bottom:6px}
.quiz-q-text{font-size:16px;font-weight:700;color:var(--tp);margin-bottom:14px;letter-spacing:-.01em}
.quiz-opts{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
@media(max-width:768px){.quiz-opts{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.quiz-opts{grid-template-columns:1fr}}
.quiz-opt{display:flex;align-items:center;justify-content:flex-start;text-align:left;background:var(--bg);border:1px solid var(--bb);color:var(--tb);font-size:13px;font-weight:500;line-height:1.4;padding:14px 16px;border-radius:9px;cursor:pointer;transition:all .18s ease;min-height:54px;font-family:var(--f)}
.quiz-opt:hover{border-color:var(--bbc);color:var(--tp);background:var(--bg2)}
.quiz-opt.on{border-color:var(--brand);background:rgba(34,211,197,.10);color:var(--tp);box-shadow:inset 0 0 0 1px var(--brand)}
.quiz-opt.on::before{content:"✓";color:var(--brand);font-weight:700;margin-right:8px;font-size:14px}
.quiz-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:8px}
.quiz-actions .btn[disabled]{opacity:.45;cursor:not-allowed;background:var(--bg2);color:var(--tm) !important;box-shadow:none;transform:none}
.quiz-actions .btn[disabled]:hover{background:var(--bg2);transform:none;box-shadow:none}
.quiz-reset{font-family:var(--fm);font-size:11px;color:var(--tm);letter-spacing:.1em;text-transform:uppercase;cursor:pointer;background:transparent;border:0;padding:6px 10px;border-radius:4px}
.quiz-reset:hover{color:var(--tp)}
.quiz-hint{font-size:12px;color:var(--tm);font-family:var(--fm);letter-spacing:.04em}

.quiz-result{margin-top:28px;background:linear-gradient(180deg,rgba(34,211,197,.10) 0%,rgba(34,211,197,.02) 100%);border:1px solid var(--bbc);border-radius:12px;padding:28px 30px;position:relative;overflow:hidden;animation:qres .45s ease}
@keyframes qres{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.quiz-result::before{content:"";position:absolute;top:0;left:0;bottom:0;width:3px;background:var(--brand)}
.quiz-match-name{font-size:clamp(22px,2.4vw,28px);font-weight:800;color:var(--tp);letter-spacing:-.02em;line-height:1.2;margin-bottom:6px}
.quiz-match-tag{font-size:14px;color:var(--tb);margin-bottom:18px;line-height:1.55}
.quiz-result-actions{display:flex;gap:12px;flex-wrap:wrap}
.quiz-alt{font-family:var(--fm);font-size:11px;color:var(--tm);letter-spacing:.06em;margin-top:14px}

/* Highlight the matched card */
.syscard.matched{border-color:var(--brand) !important;box-shadow:0 0 0 1px var(--brand),0 24px 64px rgba(0,0,0,.45),0 0 60px rgba(34,211,197,.18) !important;transform:translateY(-2px)}
.syscard .match-badge{position:absolute;top:14px;right:14px;z-index:3;background:var(--brand);color:#060c12;font-family:var(--fm);font-size:9px;font-weight:700;letter-spacing:.16em;padding:5px 10px;border-radius:99px;text-transform:uppercase;box-shadow:0 4px 16px rgba(34,211,197,.32);animation:badgePop .35s ease}
@keyframes badgePop{from{opacity:0;transform:scale(.7)}to{opacity:1;transform:scale(1)}}