/* ============================================================
   Kingpin X site system — shared by landing.html, mesh.html,
   er.html, zdr.html, aquasentinel.html, group.html
   Derived from the AquaSentinel brand system (docs/BRAND.md).
   ============================================================ */

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

:root{
  --aqua:#2ea3f2; --aqua-dark:#1a8cd8; --aqua-light:#5bb8f5;
  --signal:#FF2D78;
  --deep:#0a1628; --dark:#0d1f3c; --tertiary:#1a2942;
  --white:#ffffff; --silver:#a0b4cc; --mid:#6b7f99;
  --line:rgba(160,180,204,.12); --line-soft:rgba(160,180,204,.06);
  --card:rgba(255,255,255,.03); --card-hover:rgba(46,163,242,.06);
}

html{ scroll-behavior:smooth; background:var(--deep); }
body{
  background:var(--deep); color:var(--white);
  font-family:'Open Sans',sans-serif; font-weight:300; line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

/* ---------- top nav ---------- */
.kpx-nav{
  position:fixed; top:0; left:0; right:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between; gap:18px;
  padding:14px clamp(20px,4vw,48px);
  background:rgba(10,22,40,.82); backdrop-filter:blur(10px); -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
}
.kpx-nav .brand{ font-family:'Poppins',sans-serif; font-size:1.05rem; letter-spacing:.02em;
  text-decoration:none; color:var(--white); font-weight:300; white-space:nowrap; }
.kpx-nav .brand b{ font-weight:700; color:var(--aqua); }
.kpx-nav .brand .punc{ color:var(--signal); font-weight:700; }
.kpx-nav .links{ display:flex; gap:clamp(10px,2.2vw,28px); flex-wrap:wrap; justify-content:flex-end; }
.kpx-nav .links a{ font-family:'Space Grotesk',monospace; font-size:.78rem; letter-spacing:.12em;
  text-transform:uppercase; color:var(--mid); text-decoration:none; transition:color .18s ease; white-space:nowrap; }
.kpx-nav .links a:hover{ color:var(--aqua-light); }
.kpx-nav .links a.on{ color:var(--white); border-bottom:2px solid var(--signal); padding-bottom:2px; }
@media(max-width:720px){ .kpx-nav .links a{ font-size:.68rem; letter-spacing:.08em; } }

/* ---------- sections ---------- */
.hero{
  min-height:100vh; min-height:100svh;
  display:flex; flex-direction:column; justify-content:center;
  padding:110px clamp(24px,6vw,96px) 64px; position:relative; overflow:hidden;
}
.section{ padding:clamp(56px,9vh,110px) clamp(24px,6vw,96px); position:relative; }
.inner{ max-width:1080px; margin:0 auto; width:100%; position:relative; z-index:2; }
.hero::before, .section.amb::before{
  content:''; position:absolute; inset:0; z-index:1; pointer-events:none;
  background:
    radial-gradient(ellipse 70% 50% at 75% 15%, rgba(46,163,242,.10), transparent 60%),
    radial-gradient(ellipse 50% 40% at 15% 90%, rgba(255,45,120,.05), transparent 60%);
}
.section.alt{ background:var(--dark); }

/* ---------- type ---------- */
.eyebrow{ font-family:'Space Grotesk',monospace; text-transform:uppercase; letter-spacing:.28em;
  font-size:.72rem; color:var(--mid); display:flex; align-items:center; gap:10px; margin:0 0 20px; }
.eyebrow::before{ content:''; flex:none; width:6px; height:6px; border-radius:50%; background:var(--signal);
  box-shadow:0 0 8px rgba(255,45,120,.7); }

h1.as-title{ font-family:'Poppins',sans-serif; font-weight:200; letter-spacing:-.035em; line-height:1.04;
  font-size:clamp(2.4rem,6.4vw,4.6rem); color:var(--white); margin-bottom:26px; }
h1.as-title .em{ font-weight:700; color:var(--aqua); }
h1.as-title .punc{ color:var(--signal); }

h2.sec{ font-family:'Poppins',sans-serif; font-weight:300; letter-spacing:-.02em;
  font-size:clamp(1.7rem,3.4vw,2.4rem); margin-bottom:10px; }
h2.sec .em{ font-weight:700; color:var(--aqua); }
h2.sec .punc{ color:var(--signal); }
.sec-sub{ color:var(--mid); font-size:.98rem; margin-bottom:34px; max-width:680px; }
.sec-sub b, .lede b{ color:var(--white); font-weight:600; }

.lede{ color:var(--silver); font-size:clamp(1.05rem,1.8vw,1.28rem); max-width:720px; margin-bottom:14px; }
.zdr-mark{ font-weight:700; color:var(--aqua-light); }
.zdr-mark sup{ color:var(--signal); font-size:.6em; font-weight:400; }
.kp-word{ font-family:'Poppins',sans-serif; font-weight:700; color:var(--white); }
.kp-word .m{ color:var(--aqua); }

/* ---------- buttons ---------- */
.cta-row{ display:flex; gap:14px; flex-wrap:wrap; margin-top:34px; }
.btn{ font-family:'Poppins',sans-serif; font-weight:500; font-size:.95rem; padding:14px 28px;
  border-radius:10px; text-decoration:none; transition:all .22s ease; display:inline-flex; align-items:center; gap:8px; }
.btn .arrow{ transition:transform .22s ease; }
.btn:hover .arrow{ transform:translateX(4px); }
.btn-primary{ background:linear-gradient(135deg,var(--aqua),var(--aqua-dark)); color:var(--white);
  box-shadow:0 4px 18px rgba(46,163,242,.3); }
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 8px 28px rgba(46,163,242,.45); }
.btn-ghost{ background:transparent; border:1px solid var(--line); color:var(--white); }
.btn-ghost:hover{ border-color:var(--aqua); color:var(--aqua-light); }

/* ---------- cards / grids ---------- */
.grid2{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.grid3{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.grid4{ display:grid; grid-template-columns:repeat(4,1fr); gap:18px; }
@media(max-width:960px){ .grid4{ grid-template-columns:1fr 1fr; } }
@media(max-width:820px){ .grid3{ grid-template-columns:1fr; } }
@media(max-width:640px){ .grid2,.grid4{ grid-template-columns:1fr; } }

.card{ background:var(--card); border:1px solid var(--line); border-radius:16px; padding:26px 26px 24px;
  transition:all .22s ease; }
.card:hover{ border-color:rgba(46,163,242,.4); background:var(--card-hover); }
.card h3{ font-family:'Poppins',sans-serif; font-weight:600; font-size:1.08rem; margin-bottom:8px; color:var(--white); }
.card p{ color:var(--silver); font-size:.92rem; }
.card .num{ font-family:'Space Grotesk',monospace; font-size:.72rem; letter-spacing:.24em; color:var(--mid); display:block; margin-bottom:10px; }

a.card{ text-decoration:none; display:block; }
a.card:hover{ transform:translateY(-3px); box-shadow:0 14px 34px rgba(46,163,242,.16); }
a.card .go{ margin-top:14px; display:inline-flex; align-items:center; gap:6px; color:var(--aqua-light);
  font-family:'Poppins',sans-serif; font-weight:500; font-size:.88rem; }
a.card .go .arrow{ transition:transform .22s ease; }
a.card:hover .go .arrow{ transform:translateX(4px); }

/* ---------- checklists ---------- */
.checks{ list-style:none; display:flex; flex-direction:column; gap:10px; }
.checks li{ display:flex; gap:12px; align-items:flex-start; color:var(--silver); font-size:.95rem; }
.checks li::before{ content:'✓'; flex:none; color:var(--aqua); font-weight:700; font-family:'Space Grotesk',monospace; }
.checks li b{ color:var(--white); font-weight:600; }

/* ---------- numbered steps ---------- */
.steps{ list-style:none; counter-reset:step; display:flex; flex-direction:column; gap:0; }
.steps li{ counter-increment:step; display:grid; grid-template-columns:56px 1fr; gap:18px;
  padding:20px 0; border-bottom:1px solid var(--line-soft); }
.steps li:last-child{ border-bottom:none; }
.steps li::before{ content:counter(step,decimal-leading-zero); font-family:'Space Grotesk',monospace;
  font-size:1.3rem; color:var(--aqua); font-weight:500; line-height:1.2; }
.steps li h4{ font-family:'Poppins',sans-serif; font-weight:600; font-size:1rem; color:var(--white); margin-bottom:4px; }
.steps li p{ color:var(--silver); font-size:.93rem; max-width:680px; }

/* ---------- stat tiles ---------- */
.stats{ display:grid; grid-template-columns:repeat(4,1fr); gap:18px; margin-top:34px; }
@media(max-width:820px){ .stats{ grid-template-columns:1fr 1fr; } }
.stat{ border:1px solid var(--line); border-radius:16px; padding:22px; background:var(--card); }
.stat .n{ font-family:'Space Grotesk',monospace; font-size:clamp(1.6rem,3vw,2.2rem); color:var(--aqua); line-height:1.1; }
.stat .l{ color:var(--mid); font-size:.85rem; margin-top:6px; }

/* ---------- timeline ---------- */
.timeline{ list-style:none; display:flex; flex-direction:column; }
.timeline li{ display:grid; grid-template-columns:86px 1fr; gap:18px; padding:13px 0;
  border-bottom:1px solid var(--line-soft); align-items:baseline; }
.timeline li:last-child{ border-bottom:none; }
.timeline .t{ font-family:'Space Grotesk',monospace; color:var(--aqua); font-size:.95rem; }
.timeline .d{ color:var(--silver); font-size:.95rem; }
.timeline .d b{ color:var(--white); font-weight:600; }
.timeline li.hot .t{ color:var(--signal); }

/* ---------- rollout strip ---------- */
.rollout{ display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin:26px 0 12px; }
@media(max-width:820px){ .rollout{ grid-template-columns:1fr 1fr; } }
.rollout .r{ border:1px solid var(--line); border-radius:14px; padding:18px; background:var(--card); text-align:center; }
.rollout .r .num{ font-family:'Space Grotesk',monospace; font-size:.72rem; letter-spacing:.24em; color:var(--mid); display:block; margin-bottom:8px; }
.rollout .r .nm{ font-family:'Poppins',sans-serif; font-weight:600; font-size:.98rem; }
.rollout .r .st{ display:inline-block; margin-top:10px; font-family:'Space Grotesk',monospace; font-size:.68rem;
  letter-spacing:.18em; padding:4px 10px; border-radius:999px; }
.rollout .r .st.live{ color:#10B981; border:1px solid rgba(16,185,129,.4); }
.rollout .r .st.next{ color:var(--signal); border:1px solid rgba(255,45,120,.4); }

/* ---------- wordmark lockup (AquaSentinel page + footer) ---------- */
.as-wordmark{ display:inline-flex; align-items:baseline; gap:.04em; font-family:'Poppins',sans-serif;
  font-weight:700; letter-spacing:.16em; text-transform:lowercase; line-height:1; }
.as-wordmark .wm-aqua{ color:var(--aqua); }
.as-wordmark .wm-sentinel{ color:var(--white); }
.as-wordmark .wm-drop{ display:inline-block; width:.5em; height:.66em; margin:0 .06em;
  transform:translateY(.06em); filter:drop-shadow(0 0 8px rgba(255,45,120,.55)); }
.as-wordmark .wm-drop svg{ width:100%; height:100%; display:block; }
.as-wordmark-line{ display:block; width:clamp(120px,18vw,220px); height:2px; border-radius:1px; margin-top:10px;
  background:linear-gradient(90deg,transparent 0%,var(--aqua) 25%,var(--aqua-light) 50%,var(--signal) 80%,transparent 100%);
  box-shadow:0 0 12px rgba(46,163,242,.35); }

/* ---------- footer ---------- */
.kpx-footer{ border-top:1px solid var(--line-soft); padding:44px clamp(24px,6vw,96px) 54px; background:var(--deep); }
.kpx-footer .inner{ display:flex; flex-wrap:wrap; gap:28px; justify-content:space-between; align-items:flex-start; }
.kpx-footer .fbrand{ font-family:'Poppins',sans-serif; font-weight:300; font-size:1.05rem; }
.kpx-footer .fbrand b{ font-weight:700; color:var(--aqua); }
.kpx-footer .fbrand .punc{ color:var(--signal); font-weight:700; }
.kpx-footer .fsub{ color:var(--mid); font-size:.85rem; margin-top:6px; max-width:380px; }
.kpx-footer .fcontact{ font-size:.92rem; color:var(--silver); line-height:1.9; text-align:right; }
.kpx-footer .fcontact a{ color:var(--aqua-light); text-decoration:none; }
.kpx-footer .fcontact a:hover{ color:var(--white); }
.kpx-footer .fcontact b{ color:var(--white); font-weight:600; font-family:'Poppins',sans-serif; }
@media(max-width:720px){ .kpx-footer .fcontact{ text-align:left; } }
.kpx-footer .fnav{ display:flex; gap:18px; flex-wrap:wrap; margin-top:16px; }
.kpx-footer .fnav a{ font-family:'Space Grotesk',monospace; font-size:.72rem; letter-spacing:.14em;
  text-transform:uppercase; color:var(--mid); text-decoration:none; }
.kpx-footer .fnav a:hover{ color:var(--aqua-light); }