/* ============================================================
   KAYIL SYSTEMS — THEME B: Blueprint / Technical  v2.0
   ALL sections use light backgrounds. Dark used ONLY for:
     - Header nav (#midnight-deep)
     - Hero (#midnight-deep)  
     - Stats bar (#midnight)
     - Footer (#midnight-deep)
   Everything else: white or paper backgrounds, dark text.
   ============================================================ */

:root {
  --midnight:      #0B1F3A;
  --midnight-deep: #071428;
  --blueprint:     #1D3D6B;
  --electric:      #1A6EBD;
  --electric-light:#2E8AD4;
  --electric-dim:  rgba(26,110,189,0.08);
  --electric-border: rgba(26,110,189,0.22);
  --paper:         #F4F7FB;
  --paper-mid:     #E8EFF8;
  --slate:         #93B0D0;
  --white:         #FFFFFF;
  --text-dark:     #0D1F36;
  --text-mid:      #2E4A68;
  --text-light:    #5A7A9A;
  --text-hint:     #8BA5BF;
  --border-main:   #D0DFF0;
  --border-strong: #A8BFDB;
  --accent-green:  #0F8A5F;
  --accent-green-bg: rgba(15,138,95,0.08);
  --accent-amber:  #B56A00;
  --accent-amber-bg: rgba(181,106,0,0.08);
  /* on-dark colors - ONLY for hero/nav/footer/stats */
  --on-dark-text:  rgba(255,255,255,0.90);
  --on-dark-muted: rgba(255,255,255,0.55);
  --on-dark-dim:   rgba(255,255,255,0.30);
  --on-dark-border:rgba(255,255,255,0.10);
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; }
body { font-family:'Open Sans',sans-serif; color:var(--text-dark); background:var(--white); margin:0; line-height:1.7; }
h1,h2,h3,h4,h5,h6 { font-family:'Raleway',sans-serif; font-weight:700; line-height:1.25; color:var(--text-dark); margin:0 0 12px; }
a { color:var(--electric); text-decoration:none; transition:color 0.2s; }
a:hover { color:var(--electric-light); }
img { max-width:100%; height:auto; }
p { margin:0 0 14px; }
ul,ol { padding-left:0; margin:0; }

/* ── Navigation (DARK - intended) ── */
#header {
  position:fixed; top:0; left:0; right:0; z-index:997;
  background:var(--midnight-deep) !important;
  border-bottom:1px solid var(--blueprint);
  padding:0;
}
#header .container {
  display:flex; align-items:center; justify-content:space-between;
  padding:0 32px; height:76px; max-width:1260px; margin:0 auto;
}
.logo img { height:52px; width:auto; }
.footer-brand img { height:52px; width:auto; margin-bottom:14px; }

.navbar ul { list-style:none; margin:0; padding:0; display:flex; align-items:center; gap:2px; }
.navbar ul li { position:relative; }
.navbar ul li a {
  font-family:'Raleway',sans-serif; font-size:12px; font-weight:700;
  color:var(--on-dark-muted); padding:8px 14px;
  letter-spacing:0.06em; text-transform:uppercase;
  border:1px solid transparent; transition:all 0.2s; display:block;
  white-space:nowrap;
}
.navbar ul li a:hover,
.navbar ul li a.active {
  color:var(--electric-light); border-color:var(--electric-border);
  background:var(--electric-dim);
}
.navbar .dropdown ul {
  position:absolute; top:calc(100% + 4px); left:0;
  background:var(--midnight-deep); border:1px solid var(--blueprint);
  min-width:210px; display:none; flex-direction:column;
  padding:6px 0; z-index:99;
}
.navbar .dropdown:hover > ul,
.navbar .dropdown.active > ul { display:flex; }
.navbar .dropdown ul li a {
  font-size:12px; padding:9px 18px;
  border:none; text-transform:none; letter-spacing:0.02em;
  color:var(--on-dark-muted);
}
.navbar .dropdown ul li a:hover { background:var(--electric-dim); color:#6BBAFF; }
.nav-cta {
  color:var(--midnight-deep) !important;
  background:var(--electric-light) !important;
  border:1px solid var(--electric-light) !important;
  padding:8px 20px !important; letter-spacing:0.08em !important;
  border-radius:2px;
}
.nav-cta:hover { background:#2E9AE0 !important; border-color:#2E9AE0 !important; color:var(--midnight-deep) !important; }
.mobile-nav-toggle { display:none; color:#6BBAFF; font-size:24px; cursor:pointer; }

/* ── Grid dot overlay (dark sections only) ── */
.grid-overlay {
  position:absolute; inset:0; pointer-events:none;
  background-image:
    linear-gradient(rgba(74,158,255,0.08) 1px,transparent 1px),
    linear-gradient(90deg,rgba(74,158,255,0.08) 1px,transparent 1px);
  background-size:30px 30px;
}

/* ── HERO (DARK - intended) ── */
#hero {
  position:relative; background:var(--midnight-deep);
  padding:140px 0 90px; overflow:hidden;
  min-height:100vh; display:flex; align-items:center;
}
.hero-content {
  position:relative; z-index:2; max-width:1200px;
  margin:0 auto; padding:0 32px;
  display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center;
}
.hero-eyebrow { display:flex; align-items:center; gap:10px; margin-bottom:20px; }
.hero-eyebrow-line { width:28px; height:1px; background:#6BBAFF; }
.hero-eyebrow span {
  font-family:'Raleway',sans-serif; font-size:11px; font-weight:700;
  letter-spacing:0.16em; text-transform:uppercase; color:#6BBAFF;
}
.hero-h1 {
  font-size:clamp(30px,3.8vw,50px); font-weight:700;
  color:var(--on-dark-text); line-height:1.15;
  margin-bottom:20px; letter-spacing:-0.02em;
}
.hero-h1 em { font-style:normal; color:#6BBAFF; }
.hero-sub {
  font-size:15px; color:var(--on-dark-muted);
  line-height:1.75; margin-bottom:36px; max-width:480px;
}
.hero-btns { display:flex; gap:12px; flex-wrap:wrap; }

/* ── Buttons ── */
.btn-primary {
  font-family:'Raleway',sans-serif; font-size:12px; font-weight:700;
  letter-spacing:0.08em; text-transform:uppercase;
  background:var(--electric); color:#fff;
  border:2px solid var(--electric);
  padding:12px 28px; cursor:pointer; transition:all 0.2s;
  display:inline-block; line-height:1;
}
.btn-primary:hover { background:var(--electric-light); border-color:var(--electric-light); color:#fff; }

.btn-outline {
  font-family:'Raleway',sans-serif; font-size:12px; font-weight:700;
  letter-spacing:0.08em; text-transform:uppercase;
  background:transparent; color:var(--electric);
  border:2px solid var(--electric);
  padding:12px 28px; cursor:pointer; transition:all 0.2s;
  display:inline-block; line-height:1;
}
.btn-outline:hover { background:var(--electric); color:#fff; }

/* Hero ghost button (on dark bg) */
.btn-ghost {
  font-family:'Raleway',sans-serif; font-size:12px; font-weight:700;
  letter-spacing:0.08em; text-transform:uppercase;
  background:transparent; color:var(--on-dark-muted);
  border:1px solid var(--on-dark-border);
  padding:12px 28px; cursor:pointer; transition:all 0.2s;
  display:inline-block; line-height:1;
}
.btn-ghost:hover { border-color:#6BBAFF; color:#6BBAFF; }

/* ── Hero Schematic ── */
.hero-schematic {
  border:1px solid rgba(107,186,255,0.2); background:rgba(74,158,255,0.04);
  padding:28px 24px; position:relative;
}
.hero-schematic::before {
  content:'SYSTEM ARCHITECTURE';
  position:absolute; top:-10px; left:16px;
  background:var(--midnight-deep); padding:0 8px;
  font-family:'Raleway',sans-serif; font-size:9px; font-weight:700;
  letter-spacing:0.14em; color:#6BBAFF;
}
.sch-row { display:flex; align-items:center; gap:6px; margin-bottom:14px; }
.sch-row:last-child { margin-bottom:0; }
.sch-node {
  font-family:'Raleway',sans-serif; font-size:10px; font-weight:700;
  letter-spacing:0.04em; padding:7px 10px;
  border:1px solid rgba(107,186,255,0.4); color:#6BBAFF;
  background:rgba(74,158,255,0.08); white-space:nowrap; flex-shrink:0;
}
.sch-node.dim { border-color:rgba(107,186,255,0.18); color:rgba(107,186,255,0.4); background:transparent; }
.sch-node.accent { background:var(--electric); color:#fff; border-color:var(--electric); }
.sch-arrow {
  flex:1; height:1px; background:rgba(107,186,255,0.4);
  position:relative; min-width:16px;
}
.sch-arrow::after {
  content:''; position:absolute; right:-1px; top:-3px;
  border-left:5px solid rgba(107,186,255,0.4);
  border-top:3px solid transparent; border-bottom:3px solid transparent;
}
.sch-arrow.dim { background:rgba(107,186,255,0.15); }
.sch-arrow.dim::after { border-left-color:rgba(107,186,255,0.15); }

/* ── Stats Bar (DARK - intended) ── */
.stats-bar {
  background:var(--midnight);
  border-top:1px solid var(--blueprint); border-bottom:1px solid var(--blueprint);
  padding:32px 0;
}
.stats-bar .inner {
  max-width:1200px; margin:0 auto; padding:0 32px;
  display:grid; grid-template-columns:repeat(4,1fr);
}
.stat-item { text-align:center; padding:0 24px; border-right:1px solid rgba(255,255,255,0.08); }
.stat-item:last-child { border-right:none; }
.stat-num {
  font-family:'Raleway',sans-serif; font-size:38px; font-weight:700;
  color:#6BBAFF; line-height:1; margin-bottom:6px;
}
.stat-label {
  font-size:11px; color:var(--on-dark-muted); letter-spacing:0.08em;
  text-transform:uppercase; font-family:'Raleway',sans-serif;
}

/* ── Section layouts (ALL LIGHT) ── */
.sec { padding:80px 0; }
.sec-paper { background:var(--paper); }
.sec-white { background:var(--white); }
.sec-ruled { background:var(--white); border-top:1px solid var(--border-main); }

.wrap { max-width:1200px; margin:0 auto; padding:0 32px; }

.sec-eyebrow { display:flex; align-items:center; gap:10px; margin-bottom:10px; }
.sec-eyebrow-line { width:20px; height:2px; background:var(--electric); }
.sec-eyebrow span {
  font-family:'Raleway',sans-serif; font-size:10px; font-weight:700;
  letter-spacing:0.16em; text-transform:uppercase; color:var(--electric);
}
.sec-h2 {
  font-size:clamp(22px,2.8vw,34px); font-weight:700;
  color:var(--text-dark); margin-bottom:8px; letter-spacing:-0.01em;
}
.sec-sub {
  font-size:15px; color:var(--text-light); max-width:540px;
  margin-bottom:48px; line-height:1.75;
}

/* ── Capability gradient bar ── */
.cap-bar {
  height:4px;
  background:linear-gradient(90deg,var(--midnight) 0%,var(--blueprint) 45%,var(--electric) 100%);
  margin-bottom:32px;
}
.cap-grid {
  display:grid; grid-template-columns:repeat(4,1fr);
  border:1px solid var(--border-main); margin-bottom:56px;
}
.cap-item {
  padding:24px 20px; border-right:1px solid var(--border-main); text-align:center;
}
.cap-item:last-child { border-right:none; }
.cap-icon {
  width:44px; height:44px;
  border:1px solid var(--electric-border); background:var(--electric-dim);
  display:flex; align-items:center; justify-content:center;
  margin:0 auto 12px; font-size:20px; color:var(--electric);
}
.cap-label {
  font-family:'Raleway',sans-serif; font-size:13px; font-weight:700;
  color:var(--text-dark); margin-bottom:5px;
}
.cap-desc { font-size:12px; color:var(--text-light); line-height:1.55; }

/* ── About grid ── */
.about-grid { display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:start; }
.about-text h2 { font-size:26px; font-weight:700; color:var(--text-dark); margin-bottom:14px; }
.about-text p { font-size:14px; color:var(--text-mid); line-height:1.8; margin-bottom:14px; }
.svc-list { list-style:none; padding:0; margin:0; }
.svc-list li {
  display:flex; align-items:center; gap:10px;
  padding:9px 0; border-bottom:1px solid var(--border-main);
  font-size:13px; color:var(--text-mid);
  font-family:'Raleway',sans-serif; font-weight:600;
}
.svc-list li::before { content:''; width:6px; height:6px; background:var(--electric); flex-shrink:0; }
.about-img { border:1px solid var(--border-main); overflow:hidden; }
.about-img img { width:100%; height:420px; object-fit:cover; display:block; }

/* ── Solution Cards (numbered, zero-radius, left-border) ── */
.sol-grid {
  display:grid; grid-template-columns:repeat(4,1fr);
  border:1px solid var(--border-main); background:var(--border-main);
  gap:1px;
}
.sol-card {
  padding:32px 24px; background:var(--white);
  border-left:4px solid var(--slate);
  transition:border-left-color 0.2s, background 0.2s;
  cursor:pointer; text-decoration:none; display:block; color:inherit;
}
.sol-card:hover { background:var(--paper); border-left-color:var(--electric); color:inherit; }
.sol-card.hl { border-left-color:var(--electric); }
.sol-num {
  font-family:'Raleway',sans-serif; font-size:38px; font-weight:700;
  color:var(--border-main); line-height:1; margin-bottom:14px;
  transition:color 0.2s;
}
.sol-card:hover .sol-num, .sol-card.hl .sol-num { color:var(--paper-mid); }
.sol-icon {
  width:40px; height:40px; border:1px solid var(--electric-border);
  background:var(--electric-dim); display:flex; align-items:center;
  justify-content:center; margin-bottom:14px; font-size:18px; color:var(--electric);
}
.sol-card h3 { font-size:14px; font-weight:700; color:var(--text-dark); margin-bottom:8px; }
.sol-card p { font-size:13px; color:var(--text-light); line-height:1.65; margin-bottom:18px; }
.sol-arrow {
  font-family:'Raleway',sans-serif; font-size:10px; font-weight:700;
  letter-spacing:0.1em; text-transform:uppercase; color:var(--electric);
  display:flex; align-items:center; gap:6px;
}
.sol-arrow::after { content:'→'; font-size:13px; transition:transform 0.2s; }
.sol-card:hover .sol-arrow::after { transform:translateX(4px); }

/* ── Section content cards (all light) ── */
.content-card {
  background:var(--white); border:1px solid var(--border-main);
  border-top:3px solid var(--electric);
  padding:36px 40px; margin-bottom:20px;
}
.content-card.blue-top { border-top-color:var(--blueprint); }
.content-card.green-top { border-top-color:var(--accent-green); }

.card-header {
  display:flex; align-items:flex-start; justify-content:space-between;
  gap:20px; margin-bottom:16px; flex-wrap:wrap;
}
.card-header h3 { font-size:20px; font-weight:700; color:var(--text-dark); margin:0; }

.tag {
  font-family:'Raleway',sans-serif; font-size:10px; font-weight:700;
  letter-spacing:0.1em; text-transform:uppercase;
  color:var(--electric); border:1px solid var(--electric-border);
  background:var(--electric-dim); padding:4px 12px; white-space:nowrap; flex-shrink:0;
}
.tag.green { color:var(--accent-green); border-color:rgba(15,138,95,0.25); background:var(--accent-green-bg); }
.tag.amber { color:var(--accent-amber); border-color:rgba(181,106,0,0.25); background:var(--accent-amber-bg); }

.content-card p { font-size:14px; color:var(--text-mid); line-height:1.8; margin-bottom:18px; }

.feat-label {
  font-family:'Raleway',sans-serif; font-size:10px; font-weight:700;
  letter-spacing:0.12em; text-transform:uppercase; color:var(--text-hint);
  margin-bottom:12px; display:flex; align-items:center; gap:8px;
}
.feat-label::after { content:''; flex:1; height:1px; background:var(--border-main); }

.feat-grid { display:grid; grid-template-columns:1fr 1fr; gap:8px; margin-bottom:24px; }
.feat-item {
  display:flex; align-items:flex-start; gap:8px;
  font-size:13px; color:var(--text-mid); line-height:1.5;
}
.feat-dot { width:5px; height:5px; background:var(--electric); flex-shrink:0; margin-top:6px; }
.feat-dot.green { background:var(--accent-green); }

/* ── Three-col highlight boxes (IoT comm) ── */
.highlight-cols {
  display:grid; grid-template-columns:repeat(3,1fr);
  border:1px solid var(--border-main); margin:24px 0;
}
.highlight-col {
  padding:20px 18px; border-right:1px solid var(--border-main);
}
.highlight-col:last-child { border-right:none; }
.highlight-col-label {
  font-family:'Raleway',sans-serif; font-size:10px; font-weight:700;
  letter-spacing:0.12em; text-transform:uppercase;
  color:var(--electric); margin-bottom:8px;
}
.highlight-col p { font-size:13px; color:var(--text-light); margin:0; line-height:1.6; }

/* ── Arch cols (3-col split) ── */
.arch-cols {
  display:grid; grid-template-columns:repeat(3,1fr);
  border:1px solid var(--border-main); margin:20px 0;
}
.arch-col { padding:20px 18px; border-right:1px solid var(--border-main); }
.arch-col:last-child { border-right:none; }
.arch-col-title {
  font-family:'Raleway',sans-serif; font-size:11px; font-weight:700;
  letter-spacing:0.08em; text-transform:uppercase; color:var(--text-dark);
  margin-bottom:10px; padding-bottom:8px; border-bottom:1px solid var(--border-main);
}
.arch-col ul { list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:6px; }
.arch-col ul li {
  font-size:12px; color:var(--text-light);
  display:flex; gap:6px; align-items:flex-start;
}
.arch-col ul li span { color:var(--electric); flex-shrink:0; font-weight:700; }

/* ── Workflow pipeline ── */
.pipeline {
  display:flex; align-items:stretch; border:1px solid var(--border-main);
  margin:16px 0 24px; overflow:hidden;
}
.pipe-step {
  flex:1; padding:14px 12px; text-align:center;
  border-right:1px solid var(--border-main); background:var(--white);
  font-family:'Raleway',sans-serif; font-size:11px; font-weight:700;
  letter-spacing:0.06em; text-transform:uppercase; color:var(--text-mid);
  position:relative;
}
.pipe-step:last-child { border-right:none; }
.pipe-step.active { background:var(--electric-dim); color:var(--electric); }
.pipe-step::after {
  content:'→'; position:absolute; right:-10px; top:50%;
  transform:translateY(-50%); font-size:14px; color:var(--slate);
  z-index:2; background:var(--border-main); padding:0 2px;
}
.pipe-step:last-child::after { display:none; }

/* ── Data-grid cards (2-col) ── */
.data-grid { display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-bottom:20px; }
.data-item {
  border:1px solid var(--border-main); border-left:3px solid var(--electric);
  padding:14px 16px;
}
.data-item.blue { border-left-color:var(--blueprint); }
.data-item-title {
  font-family:'Raleway',sans-serif; font-size:11px; font-weight:700;
  color:var(--text-dark); margin-bottom:5px;
}
.data-item p { font-size:12px; color:var(--text-light); margin:0; line-height:1.55; }

/* ── Field pills (monospace) ── */
.pill-wrap { margin-bottom:16px; }
.pill {
  display:inline-block; background:var(--paper);
  color:var(--electric); border:1px solid var(--border-strong);
  padding:3px 10px; font-size:11px; font-family:'Courier New',monospace;
  margin:3px 2px; letter-spacing:0.02em;
}

/* ── Protocol box (monospace code) ── */
.proto-box {
  font-family:'Courier New',monospace; font-size:12px;
  color:var(--electric); background:var(--midnight);
  border:1px solid var(--blueprint); padding:16px 20px;
  letter-spacing:0.03em; margin-bottom:20px; line-height:1.6;
}

/* ── Stat-quad (packet sizes / QoS) ── */
.stat-quad {
  display:grid; grid-template-columns:repeat(4,1fr);
  border:1px solid var(--border-main); margin-bottom:20px;
}
.stat-quad-item {
  padding:18px 14px; border-right:1px solid var(--border-main); text-align:center;
}
.stat-quad-item:last-child { border-right:none; }
.stat-quad-num {
  font-family:'Raleway',sans-serif; font-size:22px; font-weight:700;
  color:var(--electric); margin-bottom:4px;
}
.stat-quad-label { font-size:11px; color:var(--text-light); }

/* ── Tables ── */
.b-table { width:100%; border-collapse:collapse; font-size:13px; margin:12px 0; }
.b-table th {
  background:var(--midnight); color:#6BBAFF;
  font-family:'Raleway',sans-serif; font-size:10px; font-weight:700;
  letter-spacing:0.08em; text-transform:uppercase;
  padding:10px 14px; text-align:left; border:1px solid var(--blueprint);
}
.b-table th:last-child { color:#B8A0FF; }
.b-table td {
  padding:10px 14px; border:1px solid var(--border-main);
  color:var(--text-mid); vertical-align:middle;
}
.b-table tr:nth-child(odd) td { background:var(--paper); }
.b-table tr:nth-child(even) td { background:var(--white); }
.b-table td:last-child { color:#5A30A0; font-weight:600; }
.b-table td.ack { color:var(--accent-green); font-weight:600; font-family:monospace; }
.b-table td.nak { color:#C0392B; font-weight:600; font-family:monospace; }
.b-table td.code { color:var(--electric); font-family:monospace; }

/* ── Two-col table layout ── */
.table-pair { display:grid; grid-template-columns:1fr 1fr; gap:16px; }

/* ── CTA Strip (DARK - intended) ── */
.cta-strip {
  background:var(--midnight-deep); border-top:1px solid var(--blueprint);
  border-bottom:1px solid var(--blueprint);
  padding:72px 0; text-align:center; position:relative; overflow:hidden;
}
.cta-strip h2 { font-size:30px; font-weight:700; color:var(--on-dark-text); margin-bottom:12px; }
.cta-strip p { font-size:15px; color:var(--on-dark-muted); margin-bottom:32px; max-width:540px; margin-left:auto; margin-right:auto; }
.cta-btns { display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }
.cta-eyebrow { display:flex; align-items:center; justify-content:center; gap:10px; margin-bottom:16px; }
.cta-eyebrow-line { width:20px; height:1px; background:#6BBAFF; }
.cta-eyebrow span { font-family:'Raleway',sans-serif; font-size:10px; font-weight:700; letter-spacing:0.16em; text-transform:uppercase; color:#6BBAFF; }

/* ── Contact ── */
.contact-grid { display:grid; grid-template-columns:1fr 1.4fr; gap:60px; align-items:start; }
.contact-info h3 { font-size:20px; font-weight:700; color:var(--text-dark); margin-bottom:24px; }
.contact-detail { display:flex; align-items:flex-start; gap:14px; margin-bottom:22px; }
.contact-icon {
  width:42px; height:42px; border:1px solid var(--electric-border);
  background:var(--electric-dim); display:flex; align-items:center;
  justify-content:center; font-size:18px; color:var(--electric); flex-shrink:0;
}
.contact-text strong {
  display:block; font-family:'Raleway',sans-serif; font-size:10px;
  font-weight:700; letter-spacing:0.12em; text-transform:uppercase;
  color:var(--electric); margin-bottom:4px;
}
.contact-text span { font-size:13px; color:var(--text-mid); line-height:1.65; }
.form-lbl {
  display:block; font-family:'Raleway',sans-serif; font-size:10px; font-weight:700;
  letter-spacing:0.12em; text-transform:uppercase; color:var(--text-light); margin-bottom:6px;
}
.form-ctrl {
  width:100%; background:var(--paper); border:1px solid var(--border-main);
  padding:11px 14px; font-family:'Open Sans',sans-serif; font-size:14px;
  color:var(--text-dark); outline:none; border-radius:0; resize:vertical;
  transition:border-color 0.2s; display:block;
}
.form-ctrl:focus { border-color:var(--electric); background:var(--white); }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.form-group { margin-bottom:14px; }

/* ── Breadcrumb ── */
.breadcrumb-b {
  background:var(--midnight); border-bottom:1px solid var(--blueprint);
  padding:100px 0 32px; position:relative; overflow:hidden;
}
.bc-inner {
  max-width:1200px; margin:0 auto; padding:0 32px;
  display:flex; align-items:flex-end; justify-content:space-between; flex-wrap:wrap; gap:12px;
}
.bc-inner h2 { font-size:30px; font-weight:700; color:var(--on-dark-text); margin:0; }
.bc-nav { display:flex; align-items:center; gap:0; list-style:none; padding:0; margin:0; }
.bc-nav li { font-size:11px; color:var(--on-dark-muted); font-family:'Raleway',sans-serif; font-weight:700; letter-spacing:0.06em; text-transform:uppercase; }
.bc-nav li a { color:#6BBAFF; }
.bc-nav li + li::before { content:' / '; margin:0 6px; color:var(--on-dark-dim); }

/* ── Detail page wrapper ── */
.detail-wrap { max-width:1200px; margin:0 auto; padding:56px 32px; }

/* ── Image caption blocks ── */
.img-block { border:1px solid var(--border-main); padding:20px; background:var(--paper); text-align:center; margin:24px 0; }
.img-block img { max-width:100%; height:auto; }
.img-caption { font-size:11px; color:var(--text-hint); margin-top:10px; font-family:'Raleway',sans-serif; letter-spacing:0.04em; }

/* ── Footer (DARK - intended) ── */
#footer { background:var(--midnight-deep); border-top:1px solid var(--blueprint); padding:60px 0 0; }
.footer-inner { max-width:1200px; margin:0 auto; padding:0 32px; display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:48px; margin-bottom:48px; }
.footer-brand img { height:30px; margin-bottom:18px; }
.footer-brand p { font-size:13px; color:var(--on-dark-muted); line-height:1.7; }
.footer-col h4 { font-family:'Raleway',sans-serif; font-size:10px; font-weight:700; letter-spacing:0.16em; text-transform:uppercase; color:#6BBAFF; margin-bottom:18px; }
.footer-col ul { list-style:none; padding:0; margin:0; }
.footer-col ul li { margin-bottom:9px; }
.footer-col ul li a { font-size:13px; color:var(--on-dark-muted); transition:color 0.2s; }
.footer-col ul li a:hover { color:#6BBAFF; }
.social-row { display:flex; gap:8px; margin-top:18px; }
.social-row a {
  width:34px; height:34px; border:1px solid rgba(255,255,255,0.12);
  display:flex; align-items:center; justify-content:center;
  color:var(--on-dark-muted); font-size:15px; transition:all 0.2s;
}
.social-row a:hover { border-color:#6BBAFF; color:#6BBAFF; }
.footer-bottom {
  border-top:1px solid rgba(255,255,255,0.07); padding:18px 32px;
  max-width:1200px; margin:0 auto;
  display:flex; align-items:center; justify-content:space-between;
}
.footer-bottom p { font-size:12px; color:var(--on-dark-dim); margin:0; }

/* ── Back-to-top ── */
.back-to-top {
  position:fixed; right:20px; bottom:20px; width:40px; height:40px;
  background:var(--electric); color:#fff; display:flex; align-items:center;
  justify-content:center; font-size:22px; z-index:996;
  visibility:hidden; opacity:0; transition:all 0.3s; text-decoration:none;
}
.back-to-top.active { visibility:visible; opacity:1; }
.back-to-top:hover { background:var(--electric-light); color:#fff; }

/* ── Preloader ── */
#preloader {
  position:fixed; inset:0; z-index:9999; background:var(--midnight-deep);
  display:flex; align-items:center; justify-content:center;
}
#preloader::after {
  content:''; width:34px; height:34px;
  border:2px solid var(--blueprint); border-top-color:#6BBAFF;
  border-radius:50%; animation:spin 0.7s linear infinite;
}
@keyframes spin { to { transform:rotate(360deg); } }

/* ── Responsive ── */
@media (max-width:1024px) {
  .hero-content { grid-template-columns:1fr; gap:40px; }
  .hero-schematic { display:none; }
  .sol-grid { grid-template-columns:1fr 1fr; }
  .cap-grid { grid-template-columns:1fr 1fr; }
  .about-grid { grid-template-columns:1fr; }
  .contact-grid { grid-template-columns:1fr; }
  .footer-inner { grid-template-columns:1fr 1fr; }
  .stats-bar .inner { grid-template-columns:1fr 1fr; gap:24px; }
  .stat-item { border-right:none; border-bottom:1px solid rgba(255,255,255,0.07); padding-bottom:20px; }
  .stat-item:nth-child(2n) { border-right:none; }
  .table-pair { grid-template-columns:1fr; }
  .highlight-cols { grid-template-columns:1fr; }
  .arch-cols { grid-template-columns:1fr; }
  .highlight-col, .arch-col { border-right:none; border-bottom:1px solid var(--border-main); }
  .highlight-col:last-child, .arch-col:last-child { border-bottom:none; }
  .stat-quad { grid-template-columns:1fr 1fr; }
  .stat-quad-item:nth-child(2) { border-right:none; }
}
@media (max-width:768px) {
  .mobile-nav-toggle { display:block; }
  .navbar { display:none; }
  .navbar.navbar-mobile {
    display:block; position:fixed; top:76px; left:0; right:0;
    background:var(--midnight-deep); border-bottom:1px solid var(--blueprint);
    padding:12px; z-index:998;
  }
  .navbar.navbar-mobile ul { flex-direction:column; gap:2px; }
  .navbar.navbar-mobile .dropdown ul { position:static; border:none; padding-left:14px; display:none; }
  .navbar.navbar-mobile .dropdown.active ul { display:flex; }
  .sol-grid { grid-template-columns:1fr; }
  .cap-grid { grid-template-columns:1fr 1fr; }
  .footer-inner { grid-template-columns:1fr; }
  .hero-h1 { font-size:26px; }
  .form-row { grid-template-columns:1fr; }
  .feat-grid { grid-template-columns:1fr; }
  .data-grid { grid-template-columns:1fr; }
  .bc-inner { flex-direction:column; align-items:flex-start; }
  .pipeline { flex-direction:column; }
  .pipe-step { border-right:none; border-bottom:1px solid var(--border-main); }
  .pipe-step::after { display:none; }
  .stat-quad { grid-template-columns:1fr 1fr; }
  .wrap, .detail-wrap { padding-left:18px; padding-right:18px; }
}

/* ── Solution tiles (home page clickable grid) ── */
.sol-tiles {
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
  margin-top:48px;
}
.sol-tile {
  display:block;
  text-decoration:none;
  background:var(--white);
  border:1px solid var(--border-main);
  border-top:4px solid var(--electric);
  padding:32px 28px 28px;
  position:relative;
  transition:box-shadow 0.2s, border-top-color 0.2s, transform 0.2s;
  color:inherit;
}
.sol-tile.t-green { border-top-color:var(--accent-green); }
.sol-tile.t-blue  { border-top-color:var(--blueprint); }
.sol-tile.t-amber { border-top-color:var(--accent-amber); }
.sol-tile:hover {
  box-shadow:0 4px 24px rgba(26,110,189,0.10);
  transform:translateY(-3px);
  color:inherit;
}
.sol-tile-icon {
  width:48px; height:48px;
  border:1px solid var(--electric-border);
  background:var(--electric-dim);
  display:flex; align-items:center; justify-content:center;
  font-size:22px; color:var(--electric);
  margin-bottom:18px;
}
.sol-tile.t-green .sol-tile-icon { background:var(--accent-green-bg); border-color:rgba(15,138,95,0.25); color:var(--accent-green); }
.sol-tile.t-blue  .sol-tile-icon { background:rgba(29,61,107,0.08); border-color:rgba(29,61,107,0.2); color:var(--blueprint); }
.sol-tile.t-amber .sol-tile-icon { background:var(--accent-amber-bg); border-color:rgba(181,106,0,0.25); color:var(--accent-amber); }
.sol-tile h3 {
  font-family:'Raleway',sans-serif; font-size:17px; font-weight:700;
  color:var(--text-dark); margin-bottom:10px;
}
.sol-tile p {
  font-size:13px; color:var(--text-light); line-height:1.7; margin-bottom:20px;
}
.sol-tile-sub {
  list-style:none; padding:0; margin:0 0 22px;
  display:flex; flex-direction:column; gap:6px;
}
.sol-tile-sub li {
  font-size:12px; color:var(--text-mid);
  display:flex; align-items:center; gap:8px;
  font-family:'Raleway',sans-serif; font-weight:600;
}
.sol-tile-sub li::before {
  content:''; width:5px; height:5px;
  background:var(--electric); flex-shrink:0; border-radius:1px;
}
.sol-tile.t-green .sol-tile-sub li::before { background:var(--accent-green); }
.sol-tile.t-blue  .sol-tile-sub li::before { background:var(--blueprint); }
.sol-tile.t-amber .sol-tile-sub li::before { background:var(--accent-amber); }
.sol-tile-cta {
  font-family:'Raleway',sans-serif; font-size:11px; font-weight:700;
  letter-spacing:0.1em; text-transform:uppercase;
  color:var(--electric); display:flex; align-items:center; gap:6px;
}
.sol-tile.t-green .sol-tile-cta { color:var(--accent-green); }
.sol-tile.t-blue  .sol-tile-cta { color:var(--blueprint); }
.sol-tile.t-amber .sol-tile-cta { color:var(--accent-amber); }
.sol-tile-cta::after { content:'→'; font-size:14px; transition:transform 0.2s; }
.sol-tile:hover .sol-tile-cta::after { transform:translateX(5px); }
.sol-tile-link { display:block; text-decoration:none; color:inherit; }
.sol-tile-sub li a { color:inherit; text-decoration:none; transition:color 0.15s; }
.sol-tile-sub li a:hover { color:var(--electric); text-decoration:underline; }
.sol-tile.t-green .sol-tile-sub li a:hover { color:var(--accent-green); }
.sol-tile.t-blue  .sol-tile-sub li a:hover { color:var(--blueprint); }
.sol-tile.t-amber .sol-tile-sub li a:hover { color:var(--accent-amber); }
.sol-tile-cta { text-decoration:none; }

@media(max-width:768px){
  .sol-tiles { grid-template-columns:1fr; }
}