/* ============================================================
   BINDONGTECH — shared design system
   Editorial-technical: cool whites, ink-black, cobalt accent.
   Deliberately distinct from any warm cream / italic-serif style.
   ============================================================ */

:root{
  /* ── palette ── */
  --paper:        #f4f5f3;     /* very subtle cool off-white */
  --paper-2:      #ebede9;     /* card / panel surface */
  --paper-3:      #e2e4df;     /* hairline divider zone */
  --ink:          #0c0d10;     /* near-black, slightly cool */
  --ink-2:        #1c1e22;
  --ink-3:        #41444a;
  --mute:         #6e7077;
  --line:         rgba(12,13,16,.14);
  --line-soft:    rgba(12,13,16,.08);

  --cobalt:       #2d4cff;     /* primary accent, electric */
  --cobalt-2:     #1b2fc4;
  --cobalt-soft:  rgba(45,76,255,.10);

  --lime:         #c8ff2e;     /* punctuation accent */
  --signal:       #0fb47a;     /* live / OK */
  --warn:         #ff6a3d;     /* tertiary */

  --dark:         #0a0b0e;     /* deep panels */
  --dark-2:       #131419;
  --dark-fg:      #e9ebe6;
  --dark-mute:    #8b8d92;
  --dark-line:    rgba(255,255,255,.10);

  /* ── type ── */
  --sans:  "Space Grotesk", ui-sans-serif, system-ui, "Segoe UI", sans-serif;
  --body:  "IBM Plex Sans", ui-sans-serif, system-ui, "Segoe UI", sans-serif;
  --mono:  "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* ── layout ── */
  --max: 1360px;
  --gut: clamp(20px, 4vw, 56px);
  --rad: 2px;
}

*{ box-sizing:border-box }
html,body{ margin:0; padding:0 }
html{ scroll-behavior:smooth }
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--body);
  font-size:15.5px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  font-feature-settings:"ss01","cv11";
}
a{ color:inherit; text-decoration:none }
img{ max-width:100%; display:block }
hr{ border:0; border-top:1px solid var(--line); margin:0 }
::selection{ background:var(--cobalt); color:#fff }

.wrap{ max-width:var(--max); margin:0 auto; padding:0 var(--gut) }

/* ── reusable atoms ── */
.eyebrow{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--ink-2);
  font-weight:500;
  display:inline-flex; align-items:center; gap:10px;
}
.eyebrow::before{
  content:"";
  width:14px; height:1px;
  background:var(--cobalt);
}
.eyebrow.on-dark{ color:var(--dark-mute) }
.eyebrow.on-dark::before{ background:var(--lime) }

.kicker{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--mute);
}

.h-display{
  font-family:var(--sans);
  font-weight:500;
  font-size:clamp(48px, 7.4vw, 116px);
  line-height:.94;
  letter-spacing:-.035em;
  margin:0;
}
.h-section{
  font-family:var(--sans);
  font-weight:500;
  font-size:clamp(36px, 4.6vw, 64px);
  line-height:1.02;
  letter-spacing:-.025em;
  margin:0;
}
.h-3{
  font-family:var(--sans);
  font-weight:500;
  font-size:clamp(24px, 2.6vw, 34px);
  line-height:1.1;
  letter-spacing:-.018em;
  margin:0;
}

.lede{
  font-family:var(--body);
  font-size:17px;
  line-height:1.55;
  color:var(--ink-3);
  text-wrap:pretty;
  max-width:560px;
}

/* ── top status strip ── */
.topbar{
  background:var(--ink);
  color:var(--dark-fg);
  font-family:var(--mono);
  font-size:10.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
}
.topbar-inner{
  display:flex; justify-content:space-between; align-items:center;
  padding:9px 0;
  gap:24px;
}
.topbar .right{ display:flex; gap:28px }
.topbar a{ color:var(--dark-mute); transition:color .2s }
.topbar a:hover{ color:var(--dark-fg) }
.live{ display:inline-flex; align-items:center; gap:10px; color:var(--dark-fg) }
.live-dot{
  width:6px; height:6px; border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 0 rgba(200,255,46,.6);
  animation:pulse 2.4s infinite;
}
@keyframes pulse{
  0%{   box-shadow:0 0 0 0 rgba(200,255,46,.55) }
  70%{  box-shadow:0 0 0 8px rgba(200,255,46,0) }
  100%{ box-shadow:0 0 0 0 rgba(200,255,46,0) }
}

/* ── primary navigation ── */
nav.primary{
  position:sticky; top:0; z-index:50;
  background:rgba(244,245,243,.86);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  height:72px;
  gap:48px;
}
.brand{
  display:flex; align-items:center; gap:12px;
  font-family:var(--sans);
  font-weight:500;
  letter-spacing:-.01em;
  font-size:17px;
  color:var(--ink);
}
.brand-mark{
  width:26px; height:26px;
  position:relative;
  background:var(--ink);
}
.brand-mark::before{
  content:""; position:absolute; inset:0;
  background:
    linear-gradient(135deg, transparent 49%, var(--cobalt) 49% 51%, transparent 51%),
    linear-gradient(45deg,  transparent 49%, var(--paper) 49% 51%, transparent 51%);
}
.brand-mark::after{
  content:""; position:absolute;
  left:50%; top:50%;
  width:8px; height:8px;
  background:var(--lime);
  transform:translate(-50%,-50%);
}
.brand b{ font-weight:600 }

.menu{
  display:flex; gap:32px;
  list-style:none; margin:0; padding:0;
  font-family:var(--body);
  font-size:14.5px;
  color:var(--ink-2);
}
.menu a{
  position:relative;
  padding:8px 0;
  display:inline-flex; align-items:center; gap:6px;
  transition:color .2s;
}
.menu a::after{
  content:"";
  position:absolute; left:0; right:0; bottom:0;
  height:1px; background:var(--ink);
  transform:scaleX(0); transform-origin:left;
  transition:transform .3s ease;
}
.menu a:hover{ color:var(--ink) }
.menu a:hover::after,
.menu a.is-active::after{ transform:scaleX(1) }
.menu a.is-active{ color:var(--ink); font-weight:500 }

.nav-ctas{ display:flex; align-items:center; gap:12px }

/* ── buttons ── */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  height:42px;
  padding:0 20px;
  font-family:var(--body);
  font-size:14px;
  font-weight:500;
  letter-spacing:.005em;
  border:1px solid transparent;
  background:transparent;
  cursor:pointer;
  transition:background .25s ease, color .25s ease, border-color .25s ease, transform .25s ease;
  white-space:nowrap;
  border-radius:var(--rad);
}
.btn-solid{ background:var(--ink); color:var(--paper); border-color:var(--ink) }
.btn-solid:hover{ background:var(--cobalt); border-color:var(--cobalt) }
.btn-ghost{ color:var(--ink); border-color:var(--line) }
.btn-ghost:hover{ border-color:var(--ink); background:var(--ink); color:var(--paper) }
.btn-cobalt{ background:var(--cobalt); color:#fff; border-color:var(--cobalt) }
.btn-cobalt:hover{ background:var(--cobalt-2); border-color:var(--cobalt-2) }
.btn-lime{ background:var(--lime); color:var(--ink); border-color:var(--lime) }
.btn-lime:hover{ background:var(--ink); color:var(--lime); border-color:var(--ink) }
.btn .arr{ font-family:var(--mono); font-size:14px; transform:translateY(-1px) }
.btn-sm{ height:34px; padding:0 14px; font-size:12.5px }

/* ── section atoms ── */
section{ padding:120px 0; position:relative }
.section-head{
  display:grid;
  grid-template-columns:1fr 1.6fr;
  gap:48px;
  align-items:end;
  margin-bottom:72px;
}
.section-head h2{
  font-family:var(--sans);
  font-weight:500;
  font-size:clamp(36px, 4.6vw, 64px);
  line-height:1.02;
  letter-spacing:-.025em;
  margin:14px 0 0;
}
.section-head .lede{ margin-top:24px; max-width:560px }

.divider{ border-top:1px solid var(--line); margin:0 }

/* ── card primitives ── */
.card{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--rad);
  padding:28px;
  display:flex; flex-direction:column;
}
.card.dark{
  background:var(--dark);
  border-color:var(--dark-line);
  color:var(--dark-fg);
}

.tag{
  display:inline-flex; align-items:center; gap:6px;
  font-family:var(--mono);
  font-size:10.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--mute);
  padding:4px 10px;
  border:1px solid var(--line);
  border-radius:999px;
}
.tag .dot{ width:5px; height:5px; border-radius:50%; background:var(--signal) }

/* ── slot (image placeholder) ── */
.slot{
  position:relative;
  background:
    repeating-linear-gradient(135deg,
      var(--paper-3) 0 6px,
      var(--paper-2) 6px 12px);
  border:1px solid var(--line);
  border-radius:var(--rad);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--mono);
  font-size:11px; letter-spacing:.14em; text-transform:uppercase;
  color:var(--mute);
  text-align:center; padding:24px;
  min-height:240px;
}
.slot::before{
  content:attr(data-label);
  background:var(--paper);
  padding:6px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  white-space:nowrap;
}
.slot.dark{
  background:
    repeating-linear-gradient(135deg,
      var(--dark-2) 0 6px,
      var(--dark) 6px 12px);
  border-color:var(--dark-line);
  color:var(--dark-mute);
}
.slot.dark::before{ background:var(--dark); border-color:var(--dark-line); color:var(--dark-mute) }

/* ── compliance band (re-used) ── */
.compliance{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--paper-2);
  padding:30px 0;
}
.compliance-inner{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:48px;
  align-items:center;
}
.comp-label{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--mute);
  white-space:nowrap;
}
.comp-grid{
  display:grid;
  grid-template-columns:repeat(8,1fr);
  gap:14px;
}
.comp{
  display:flex; flex-direction:column; gap:4px;
  padding:10px 14px;
  border:1px solid var(--line);
  border-radius:var(--rad);
  background:var(--paper);
}
.comp .k{ font-family:var(--sans); font-weight:500; font-size:13.5px; color:var(--ink) }
.comp .v{ font-family:var(--mono); font-size:10px; letter-spacing:.14em; text-transform:uppercase; color:var(--mute) }

/* ── Partner band (Google/Meta/TikTok/Bing) ── */
.partners-band{
  background:var(--paper-2);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:40px 0;
}
.partners-inner{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:48px;
  align-items:center;
}
.partners-row{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:18px;
}
.partner-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--rad);
  padding:18px 24px;
  display:flex; align-items:center; justify-content:center;
  min-height:88px;
}
.partner-card img{
  max-height:54px;
  width:auto;
  object-fit:contain;
  filter:saturate(.95);
}
@media (max-width:780px){
  .partners-inner{ grid-template-columns:1fr; gap:20px }
  .partners-row{ grid-template-columns:repeat(2, 1fr) }
}

/* ── CTA banner ── */
.cta{
  padding:140px 0;
  background:var(--ink);
  color:var(--dark-fg);
  border-top:1px solid var(--ink);
  position:relative; overflow:hidden;
}
.cta::before{
  content:"";
  position:absolute; inset:0;
  background:
    linear-gradient(90deg, var(--dark-line) 1px, transparent 1px) 0 0 / 80px 100%,
    linear-gradient(0deg,  var(--dark-line) 1px, transparent 1px) 0 0 / 100% 80px;
  opacity:.4;
  pointer-events:none;
}
.cta .inner{ position:relative; max-width:920px }
.cta h2{
  font-family:var(--sans);
  font-weight:500;
  font-size:clamp(44px, 6.4vw, 96px);
  line-height:.96;
  letter-spacing:-.03em;
  margin:24px 0 0;
  color:var(--dark-fg);
}
.cta .row{ display:flex; gap:14px; margin-top:48px; flex-wrap:wrap }

/* ── footer ── */
footer{
  background:var(--dark);
  color:var(--dark-fg);
  padding:96px 0 32px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:48px;
  padding-bottom:72px;
  border-bottom:1px solid var(--dark-line);
}
.foot-grid h4{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--dark-mute);
  font-weight:500;
  margin:0 0 24px;
}
.foot-grid ul{ list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:14px }
.foot-grid a{
  font-family:var(--body);
  font-size:14.5px;
  color:#cfd1cd;
  transition:color .2s;
}
.foot-grid a:hover{ color:var(--dark-fg) }
.foot-brand .brand{ color:var(--dark-fg) }
.foot-brand .brand-mark::before{
  background:
    linear-gradient(135deg, transparent 49%, var(--cobalt) 49% 51%, transparent 51%),
    linear-gradient(45deg,  transparent 49%, var(--dark) 49% 51%, transparent 51%);
}
.foot-brand p{ margin-top:24px; font-size:14px; color:#cfd1cd; max-width:340px; line-height:1.6 }
.foot-brand .addr{
  margin-top:32px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--dark-mute);
  line-height:1.75;
}
.foot-brand .addr strong{ color:var(--dark-fg); font-weight:500 }
.foot-bot{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  gap:32px; align-items:center;
  padding-top:24px;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--dark-mute);
  text-transform:uppercase;
}
.foot-bot .center{ text-align:center }
.foot-bot .right{ text-align:right; display:flex; gap:18px; justify-content:flex-end }
.foot-bot a:hover{ color:var(--dark-fg) }

.wordmark{
  font-family:var(--sans);
  font-weight:500;
  font-size:clamp(80px, 18vw, 280px);
  letter-spacing:-.045em;
  line-height:.9;
  color:transparent;
  -webkit-text-stroke:1px rgba(233,235,230,.18);
  margin:80px 0 32px;
  text-align:center;
  user-select:none;
}
.wordmark .bold{ -webkit-text-stroke:1px rgba(45,76,255,.55) }

/* ── page-header (used by every internal page) ── */
.page-header{
  padding:120px 0 80px;
  border-bottom:1px solid var(--line);
  position:relative; overflow:hidden;
}
.page-header .grid-bg{
  position:absolute; inset:0;
  background:
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px) 0 0 / 80px 100%,
    linear-gradient(0deg,  var(--line-soft) 1px, transparent 1px) 0 0 / 100% 80px;
  pointer-events:none;
}
.page-header .crumb{
  position:relative;
  display:flex; gap:14px;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--mute);
  margin-bottom:48px;
}
.page-header .crumb span{ color:var(--ink) }
.page-header h1{
  position:relative;
  font-family:var(--sans);
  font-weight:500;
  font-size:clamp(56px, 8vw, 132px);
  line-height:.92;
  letter-spacing:-.035em;
  margin:0;
}
.page-header .meta{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:32px;
  margin-top:80px;
  padding-top:32px;
  border-top:1px solid var(--line);
}
.page-header .meta .cell .l{
  font-family:var(--mono);
  font-size:10.5px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--mute);
}
.page-header .meta .cell .v{
  font-family:var(--sans);
  font-weight:500;
  font-size:22px;
  letter-spacing:-.01em;
  margin-top:8px;
}

/* ── responsive ── */
@media (max-width:1080px){
  .comp-grid{ grid-template-columns:repeat(4,1fr) }
}
@media (max-width:980px){
  .section-head{ grid-template-columns:1fr; gap:32px }
  .foot-grid{ grid-template-columns:1fr 1fr }
  .page-header .meta{ grid-template-columns:repeat(2,1fr); gap:24px }
}
@media (max-width:760px){
  .menu, .topbar .right > :not(:first-child){ display:none }
  .compliance-inner{ grid-template-columns:1fr; gap:18px }
  .comp-grid{ grid-template-columns:repeat(2,1fr) }
  section{ padding:80px 0 }
  .foot-grid{ grid-template-columns:1fr }
  .foot-bot{ grid-template-columns:1fr; text-align:center }
  .foot-bot .right{ justify-content:center }
}