/* ————————————————————————————————————————————————
   Future Networks — V9 "The Bridge"
   Corporate, high-tech, plain-spoken. Light blue-grey,
   navy ink, electric blue AI accents, legacy grey.
   Archivo + Instrument Sans + JetBrains Mono.
   ———————————————————————————————————————————————— */

:root {
  --bg: #F5F7FA;
  --card: #FFFFFF;
  --navy: #10243A;
  --ink: #17293E;
  --ink-dim: rgba(23, 41, 62, 0.72);
  --ink-faint: rgba(23, 41, 62, 0.48);
  --blue: #2E6BFF;
  --blue-soft: #7FB1FF;
  --legacy: #5B6472;
  --legacy-fill: #EDF0F4;
  --line: rgba(23, 41, 62, 0.14);
  --shadow: 0 16px 44px -20px rgba(16, 36, 58, 0.28);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --disp: "Archivo", "Helvetica Neue", sans-serif;
  --text: "Instrument Sans", -apple-system, sans-serif;
  --mono: "JetBrains Mono", Menlo, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg); color: var(--ink);
  font-family: var(--text); font-size: 1.03rem; line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--blue); color: #fff; }
a { color: inherit; text-decoration: none; }
.mono { font-family: var(--mono); }
img { display: block; max-width: 100%; }

/* ——— nav ——— */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between; gap: 1.4rem;
  padding: 1rem clamp(1.2rem, 4vw, 3.4rem);
  background: rgba(245, 247, 250, 0.9);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand { font-family: var(--disp); font-weight: 700; font-size: 1.08rem; letter-spacing: -0.01em; }
.nav-links { display: flex; gap: 1.7rem; }
.nav-links a { font-size: 0.88rem; color: var(--ink-dim); transition: color 0.2s; }
.nav-links a:hover { color: var(--blue); }

/* ——— buttons ——— */
.btn {
  display: inline-flex; align-items: center; justify-content: center; text-align: center;
  font-weight: 600; font-size: 0.92rem;
  padding: 0.8rem 1.5rem; border-radius: 10px;
  transition: transform 0.22s var(--ease), box-shadow 0.3s, background 0.25s, color 0.25s;
}
.btn-blue {
  background: var(--blue); color: #fff;
  box-shadow: 0 12px 30px -12px rgba(46, 107, 255, 0.65);
}
.btn-blue:hover { background: #1E56E8; transform: translateY(-2px); box-shadow: 0 16px 38px -12px rgba(46, 107, 255, 0.75); }
.btn-ghost { border: 1.5px solid var(--line); color: var(--ink-dim); background: var(--card); }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--navy); box-shadow: 0 14px 34px -14px rgba(0, 0, 0, 0.5); }
.btn-white:hover { transform: translateY(-2px); }
.btn-lg { padding: 1rem 1.9rem; font-size: 0.98rem; }

/* ——— hero ——— */
.hero { max-width: 76rem; margin: 0 auto; padding: clamp(3.6rem, 7vw, 6.5rem) clamp(1.2rem, 4vw, 3.4rem) clamp(2rem, 4vw, 3.5rem); }
.eyebrow {
  font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--blue); margin-bottom: 1.5rem;
}
.hero-h1 {
  font-family: var(--disp); font-weight: 800;
  font-size: clamp(2.3rem, 5.4vw, 4.4rem); line-height: 1.02; letter-spacing: -0.028em;
  margin-bottom: 1.5rem;
}
.hero-h1 span { display: block; }
.hero-h1 .accent { color: var(--blue); }
.hero-sub { max-width: 44rem; color: var(--ink-dim); margin-bottom: 2.2rem; }
.hero-ctas { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 2.4rem; }
.works { display: flex; align-items: center; gap: 0.55rem; flex-wrap: wrap; }
.works-l { font-size: 0.6rem; letter-spacing: 0.18em; color: var(--ink-faint); margin-right: 0.3rem; }
.wchip {
  font-size: 0.78rem; font-weight: 500; color: var(--legacy);
  background: var(--legacy-fill); border: 1px solid rgba(91, 100, 114, 0.3);
  border-radius: 7px; padding: 0.32rem 0.7rem;
}

/* ——— sections ——— */
.section { max-width: 76rem; margin: 0 auto; padding: clamp(3rem, 6vw, 5rem) clamp(1.2rem, 4vw, 3.4rem); }
.sec-head { max-width: 50rem; margin-bottom: 2.2rem; }
.sec-title {
  font-family: var(--disp); font-weight: 800;
  font-size: clamp(1.8rem, 3.8vw, 2.9rem); letter-spacing: -0.025em; line-height: 1.08;
}
.sec-dek { margin-top: 0.9rem; color: var(--ink-dim); }

/* ——— figure / bridge ——— */
.fig {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  box-shadow: var(--shadow); overflow: hidden;
}
.fig-wrap { padding: 0.8rem; }
.fig-svg { display: block; width: 100%; height: auto; }
.fig-cap {
  border-top: 1px solid var(--line); padding: 0.7rem 1.1rem;
  font-size: 0.6rem; letter-spacing: 0.16em; color: var(--ink-faint);
}
.flabel { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; fill: var(--ink-faint); }
.flabel.mid { fill: var(--blue); }
.legacy rect { fill: var(--legacy-fill); stroke: var(--legacy); stroke-width: 1.3; rx: 8; }
.legacy text { font-family: var(--disp); font-size: 14px; font-weight: 700; letter-spacing: 0.02em; fill: var(--legacy); }
.legacy text.sub { font-family: var(--mono); font-size: 8.5px; font-weight: 400; letter-spacing: 0.1em; fill: rgba(91, 100, 114, 0.75); }
.wire { fill: none; stroke: var(--legacy); stroke-width: 1.4; }
.wire.blue { stroke: var(--blue); stroke-width: 1.6; }
.wire.dash { stroke-dasharray: 5 5; }
.bridge rect { fill: #fff; stroke: var(--navy); stroke-width: 1.6; }
.bridge .t1, .ai-in .t1 { font-family: var(--disp); font-size: 15px; font-weight: 800; letter-spacing: 0.06em; fill: var(--navy); text-anchor: middle; }
.bridge .sub, .ai-in .sub, .gate .sub { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.12em; fill: var(--ink-dim); text-anchor: middle; }
.bridge .sub.faint, .ai-in .sub.faint { fill: var(--ink-faint); font-size: 8.5px; }
.ai rect { fill: rgba(46, 107, 255, 0.06); stroke: url(#aiStroke); stroke-width: 2; }
.airow { fill: rgba(46, 107, 255, 0.1); stroke: rgba(46, 107, 255, 0.35); stroke-width: 1; }
.ai-in .sub { fill: var(--navy); }
.gate rect { fill: #fff; stroke: var(--blue); stroke-width: 1.4; stroke-dasharray: 6 5; }
.gate .t2 { font-family: var(--disp); font-size: 12px; font-weight: 700; letter-spacing: 0.08em; fill: var(--blue); text-anchor: middle; }
.pkt { fill: var(--legacy); opacity: 0; }
.pkt.blue { fill: var(--blue); }
.node-flash rect { stroke: var(--blue) !important; }
.flash-fill rect { fill: rgba(46, 107, 255, 0.16) !important; }

/* ——— why cards ——— */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.why-card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 1.5rem 1.4rem; box-shadow: var(--shadow);
}
.why-n { font-size: 0.6rem; letter-spacing: 0.2em; color: var(--blue); margin-bottom: 0.7rem; }
.why-card h3 { font-family: var(--disp); font-weight: 700; font-size: 1.22rem; letter-spacing: -0.015em; margin-bottom: 0.5rem; }
.why-card p { font-size: 0.92rem; color: var(--ink-dim); }
.link { color: var(--blue); border-bottom: 1.5px solid rgba(46, 107, 255, 0.4); }

/* ——— numbers band ——— */
.band { background: var(--navy); color: #EAF1FA; }
.band-in {
  max-width: 76rem; margin: 0 auto;
  padding: clamp(2.6rem, 5vw, 4rem) clamp(1.2rem, 4vw, 3.4rem);
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem;
}
.bstat-n {
  font-family: var(--disp); font-weight: 800; letter-spacing: -0.02em;
  font-size: clamp(2.4rem, 4.6vw, 3.8rem); line-height: 1.05;
}
.bstat:nth-child(3) .bstat-n { color: var(--blue-soft); }
.bstat-l { color: rgba(234, 241, 250, 0.65); font-size: 0.88rem; margin-top: 0.3rem; }
.bstat-l sup { color: var(--blue-soft); }
.odo { display: inline-flex; align-items: baseline; overflow: hidden; }
.odo .oc { display: inline-block; height: 1.05em; overflow: hidden; }
.odo .oc > span { display: block; line-height: 1.05em; transition: transform 1.1s var(--ease); will-change: transform; }
.odo .os { display: inline-block; }

/* ——— proof cards ——— */
.proof-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.pcard {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 1.4rem; box-shadow: var(--shadow);
  display: flex; flex-direction: column;
  transition: transform 0.3s var(--ease), box-shadow 0.35s;
}
.pcard:hover { transform: translateY(-4px); box-shadow: 0 24px 54px -22px rgba(16, 36, 58, 0.4); }
.pcard header { display: flex; align-items: center; gap: 0.8rem; margin-bottom: 0.9rem; }
.pface { width: 48px; height: 48px; border-radius: 50%; object-fit: cover; }
.pface-mono {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--navy); color: #CFE0F5;
  font-family: var(--disp); font-weight: 700; font-size: 0.95rem;
}
.pcard header strong { display: block; font-family: var(--disp); font-weight: 700; font-size: 0.98rem; letter-spacing: -0.01em; }
.pcard header span { font-size: 0.74rem; color: var(--blue); font-weight: 500; }
.pval { margin-left: auto; font-family: var(--disp); font-weight: 800; font-size: 1.3rem; color: var(--navy); text-align: right; line-height: 1; }
.pval span { display: block; font-family: var(--mono); font-weight: 400; font-size: 0.56rem; letter-spacing: 0.12em; color: var(--ink-faint); margin-top: 0.2rem; }
.pwhat { font-size: 0.9rem; color: var(--ink-dim); margin-bottom: 1rem; flex: 1; }
.pcard blockquote {
  font-size: 1rem; font-weight: 500; line-height: 1.45; letter-spacing: -0.005em;
  border-left: 3px solid var(--blue); padding-left: 0.9rem; margin-bottom: 0.5rem;
}
.pwho { font-size: 0.76rem; color: var(--ink-faint); }

/* ——— how ——— */
.how { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.how li {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 1.5rem 1.4rem; box-shadow: var(--shadow);
  display: flex; flex-direction: column;
}
.how-n { font-size: 0.6rem; letter-spacing: 0.2em; color: var(--blue); }
.how h3 { font-family: var(--disp); font-weight: 700; font-size: 1.22rem; letter-spacing: -0.015em; margin: 0.6rem 0 0.5rem; }
.how p { font-size: 0.92rem; color: var(--ink-dim); }
.deliver { margin-top: auto; border-top: 1px dashed var(--line); margin-top: 1.1rem; padding-top: 0.8rem; font-size: 0.56rem; letter-spacing: 0.14em; color: var(--navy); font-weight: 500; }
.svc-line { margin-top: 2rem; color: var(--ink-dim); font-size: 0.94rem; max-width: 46rem; }

/* ——— finale ——— */
.finale {
  background: linear-gradient(160deg, var(--navy), #0B1A2C);
  color: #EAF1FA; text-align: center;
  padding: clamp(4.5rem, 9vw, 8rem) 1.4rem;
}
.finale-title {
  font-family: var(--disp); font-weight: 800;
  font-size: clamp(2rem, 4.8vw, 3.7rem); letter-spacing: -0.028em; line-height: 1.04;
  margin-bottom: 1rem;
}
.finale-sub { color: rgba(234, 241, 250, 0.68); max-width: 38rem; margin: 0 auto 2.2rem; }

/* ——— footer ——— */
.footer {
  display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap;
  padding: 1.4rem clamp(1.2rem, 4vw, 3.4rem);
  border-top: 1px solid var(--line);
  font-size: 0.78rem; color: var(--ink-faint);
}
.foot-note { font-size: 0.7rem; max-width: 36rem; }
.foot-note sup { color: var(--blue); }
.footer a:hover { color: var(--blue); }

/* ——— reveals ——— */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
html.review .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }

/* ——— responsive ——— */
@media (max-width: 1000px) {
  .nav-links { display: none; }
  .why-grid, .proof-grid, .how { grid-template-columns: 1fr; }
  .band-in { grid-template-columns: 1fr; gap: 1.6rem; }
  .fig-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .fig-svg { min-width: 900px; }
}

/* ——— reduced motion ——— */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .odo .oc > span { transition: none; }
  .pkt { display: none; }
}