/* ============================================================
   Pizzarro — Case Study
   A carbon-dark, ember-accented technical showcase.
   ============================================================ */

/* ---------- Design tokens ---------- */
:root {
  /* Surfaces */
  --carbon-950: #0b0b0c;
  --carbon-900: #121212;
  --carbon-850: #161617;
  --carbon-800: #1b1b1d;
  --carbon-750: #202023;
  --hairline: rgba(255, 255, 255, 0.08);
  --hairline-strong: rgba(255, 255, 255, 0.14);

  /* Glass */
  --glass: rgba(255, 255, 255, 0.035);
  --glass-strong: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.09);

  /* Brand */
  --brand: #bf1d0f;
  --ember: #ff4d34;
  --ember-soft: #ff7a63;
  --flame: linear-gradient(135deg, #ff7a3d 0%, #ff4d34 38%, #bf1d0f 100%);
  --flame-text: linear-gradient(120deg, #ffb37a 0%, #ff5e44 45%, #bf1d0f 100%);

  /* Type */
  --ink: #f4f1ec;
  --ink-soft: #c9c4bc;
  --ink-mute: #8c8780;
  --ink-faint: #5f5b55;

  /* Fonts */
  --font-display: "Outfit", system-ui, sans-serif;
  --font-body: "Manrope", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  /* Rhythm */
  --maxw: 1180px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 18px;
  --radius-lg: 26px;
  --section-pad: clamp(5rem, 11vw, 9rem);

  /* Motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  font-family: var(--font-body);
  background: var(--carbon-900);
  color: var(--ink);
  line-height: 1.65;
  font-size: 1.0625rem;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- Atmosphere: grain + ambient glow ---------- */
body::before {
  /* fine film grain */
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

.ambient {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.ambient span {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
}
.ambient .glow-1 {
  width: 46vw; height: 46vw;
  top: -14vw; right: -8vw;
  background: radial-gradient(circle, rgba(191, 29, 15, 0.55), transparent 65%);
  animation: drift1 22s var(--ease-soft) infinite alternate;
}
.ambient .glow-2 {
  width: 38vw; height: 38vw;
  bottom: -12vw; left: -10vw;
  background: radial-gradient(circle, rgba(255, 77, 52, 0.28), transparent 68%);
  animation: drift2 26s var(--ease-soft) infinite alternate;
}
.ambient .grid-fade {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--hairline) 1px, transparent 1px),
    linear-gradient(90deg, var(--hairline) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 5%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 5%, transparent 70%);
  opacity: 0.5;
}
@keyframes drift1 {
  to { transform: translate(-6vw, 5vw) scale(1.12); }
}
@keyframes drift2 {
  to { transform: translate(5vw, -4vw) scale(1.15); }
}

/* ---------- Layout primitives ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
  position: relative;
  z-index: 2;
}

section { position: relative; z-index: 2; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ember-soft);
  margin-bottom: 1.4rem;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 1px;
  background: var(--ember);
  box-shadow: 0 0 12px var(--ember);
}

.section-head { max-width: 640px; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section-head h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 4.6vw, 3.1rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.section-head h2 em {
  font-style: normal;
  background: var(--flame-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.section-head p {
  margin-top: 1.1rem;
  color: var(--ink-mute);
  font-size: 1.075rem;
  max-width: 56ch;
}

/* ---------- Buttons ---------- */
.btn {
  --bg: transparent;
  display: inline-flex;
  align-items: center;
  gap: 0.65em;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.97rem;
  letter-spacing: 0.01em;
  padding: 0.95em 1.65em;
  border-radius: 100px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  color: var(--ink);
  position: relative;
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out),
    background 0.3s, border-color 0.3s;
  will-change: transform;
}
.btn svg { width: 1.05em; height: 1.05em; transition: transform 0.4s var(--ease-out); }
.btn:hover { transform: translateY(-3px); }
.btn:active { transform: translateY(-1px); }

.btn-primary {
  background: var(--flame);
  color: #fff;
  box-shadow: 0 10px 30px -8px rgba(191, 29, 15, 0.7),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn-primary:hover {
  box-shadow: 0 18px 44px -10px rgba(255, 77, 52, 0.85),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
}
.btn-primary:hover svg { transform: translateX(3px); }

.btn-ghost {
  background: var(--glass);
  border-color: var(--glass-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.btn-ghost:hover {
  border-color: var(--ember);
  background: var(--glass-strong);
  color: #fff;
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem var(--gutter);
  transition: padding 0.4s var(--ease-soft), background 0.4s, border-color 0.4s,
    backdrop-filter 0.4s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  padding-block: 0.7rem;
  background: rgba(13, 13, 14, 0.72);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--hairline);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.18rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}
.brand .mark {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  border-radius: 10px;
  background: var(--flame);
  box-shadow: 0 6px 18px -6px rgba(191, 29, 15, 0.8);
  font-size: 1.1rem;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-soft);
  text-decoration: none;
  position: relative;
  transition: color 0.3s;
}
.nav-links a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 100%; height: 1px;
  background: var(--ember);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s var(--ease-out);
}
.nav-links a:not(.btn):hover { color: var(--ink); }
.nav-links a:not(.btn):hover::after { transform: scaleX(1); transform-origin: left; }
.nav-links .btn { padding: 0.6em 1.2em; font-size: 0.88rem; }
.nav-cta-only { display: none; }

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 8rem;
  padding-bottom: 4rem;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.45em 0.95em;
  border-radius: 100px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 1.8rem;
}
.hero-badge .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #38d16a;
  box-shadow: 0 0 0 0 rgba(56, 209, 106, 0.6);
  animation: pulse 2.4s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(56, 209, 106, 0.55); }
  70% { box-shadow: 0 0 0 9px rgba(56, 209, 106, 0); }
  100% { box-shadow: 0 0 0 0 rgba(56, 209, 106, 0); }
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.6rem, 6.4vw, 4.7rem);
  line-height: 0.98;
  letter-spacing: -0.035em;
}
.hero h1 .accent {
  background: var(--flame-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  margin-top: 1.6rem;
  font-size: clamp(1.05rem, 1.6vw, 1.22rem);
  color: var(--ink-soft);
  max-width: 46ch;
}
.hero-cta {
  margin-top: 2.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.hero-meta {
  margin-top: 3rem;
  display: flex;
  gap: clamp(1.5rem, 4vw, 3rem);
  flex-wrap: wrap;
}
.hero-meta .stat {
  display: flex;
  flex-direction: column;
}
.hero-meta .stat b {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.7rem;
  line-height: 1;
  letter-spacing: -0.02em;
}
.hero-meta .stat span {
  font-size: 0.78rem;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 0.4rem;
}

/* ---------- Hero device mockup ---------- */
.device-stage {
  position: relative;
  display: grid;
  place-items: center;
  perspective: 1400px;
}
.device {
  position: relative;
  width: clamp(240px, 24vw, 300px);
  aspect-ratio: 9 / 19;
  border-radius: 42px;
  padding: 12px;
  background: linear-gradient(160deg, #2a2a2d, #0d0d0e 70%);
  box-shadow:
    0 40px 80px -24px rgba(0, 0, 0, 0.85),
    0 0 0 1px rgba(255, 255, 255, 0.06),
    inset 0 1px 1px rgba(255, 255, 255, 0.12);
  transform: rotateY(-16deg) rotateX(6deg) rotateZ(1deg);
  transform-style: preserve-3d;
  animation: floaty 7s var(--ease-soft) infinite alternate;
}
@keyframes floaty {
  to { transform: rotateY(-9deg) rotateX(3deg) translateY(-14px); }
}
.device-screen {
  position: relative;
  height: 100%;
  border-radius: 32px;
  overflow: hidden;
  background:
    radial-gradient(120% 60% at 50% -10%, rgba(191, 29, 15, 0.4), transparent 60%),
    var(--carbon-850);
  display: flex;
  flex-direction: column;
}
.device-notch {
  position: absolute;
  top: 11px; left: 50%;
  transform: translateX(-50%);
  width: 38%; height: 22px;
  background: #050505;
  border-radius: 0 0 14px 14px;
  z-index: 4;
}
.scr-top {
  padding: 2.4rem 1.1rem 0.9rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.scr-top .logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}
.scr-top .logo b { color: var(--ember); }
.scr-loc {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--ink-soft);
  background: var(--glass-strong);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  padding: 0.35em 0.7em;
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  max-width: 60%;
}
.scr-loc .pin { color: var(--ember); }
.scr-card {
  margin: 0.9rem 1.1rem;
  border-radius: 18px;
  overflow: hidden;
  background: var(--glass-strong);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(6px);
}
.scr-card .img {
  height: 92px;
  background:
    radial-gradient(circle at 30% 30%, #f0a23c, transparent 45%),
    radial-gradient(circle at 70% 60%, #c43a1f, transparent 50%),
    linear-gradient(135deg, #d8531f, #7a1b0c);
  position: relative;
}
.scr-card .img::after {
  content: "★ 4.9";
  position: absolute;
  bottom: 8px; right: 8px;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  background: rgba(0, 0, 0, 0.55);
  padding: 0.25em 0.6em;
  border-radius: 100px;
  color: #ffd07a;
}
.scr-card .body { padding: 0.7rem 0.85rem 0.9rem; }
.scr-card .body h4 {
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 600;
}
.scr-card .body p {
  font-size: 0.62rem;
  color: var(--ink-mute);
  margin-top: 0.2rem;
  line-height: 1.4;
}
.scr-card .row {
  margin-top: 0.7rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.scr-card .price {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
}
.scr-add {
  font-size: 0.6rem;
  font-weight: 700;
  font-family: var(--font-display);
  color: #fff;
  background: var(--flame);
  border-radius: 100px;
  padding: 0.5em 0.95em;
  letter-spacing: 0.04em;
}
.scr-pay {
  margin: auto 1.1rem 1.3rem;
  border-radius: 14px;
  background: #fff;
  color: #111;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.72rem;
  text-align: center;
  padding: 0.85em;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
}
.scr-pay .lock { font-size: 0.7rem; }
.scr-secure {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  text-align: center;
  padding-bottom: 1rem;
}

/* floating chips around the device */
.float-chip {
  position: absolute;
  z-index: 5;
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.6em 0.95em;
  border-radius: 14px;
  background: rgba(20, 20, 22, 0.72);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  box-shadow: 0 16px 40px -16px rgba(0, 0, 0, 0.8);
  white-space: nowrap;
}
.float-chip .ic {
  display: grid;
  place-items: center;
  width: 22px; height: 22px;
  border-radius: 7px;
  background: var(--flame);
  color: #fff;
  font-size: 0.7rem;
}
.float-chip.sync {
  top: 8%; left: -14%;
  animation: bob 5s ease-in-out infinite;
}
.float-chip.geo {
  bottom: 16%; right: -16%;
  animation: bob 5.6s ease-in-out infinite 0.6s;
}
@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ---------- Brief ---------- */
.brief { padding-block: var(--section-pad); }
.brief-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.25rem, 3vw, 2rem);
}
.brief-card {
  padding: clamp(1.8rem, 3vw, 2.6rem);
  border-radius: var(--radius-lg);
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
}
.brief-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: var(--flame);
  opacity: 0.85;
}
.brief-card.solution::before { background: linear-gradient(90deg, #38d16a, #1b9e4b); }
.brief-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ember-soft);
}
.brief-card.solution .brief-tag { color: #58e08a; }
.brief-card h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.5rem;
  margin: 0.7rem 0 1rem;
  letter-spacing: -0.01em;
}
.brief-card p { color: var(--ink-soft); font-size: 1.0rem; }
.brief-card p + p { margin-top: 0.9rem; }
.brief-card strong { color: var(--ink); font-weight: 600; }

/* ---------- Features ---------- */
.features { padding-block: var(--section-pad); }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: clamp(1rem, 2.4vw, 1.6rem);
}
.feature {
  --accent: var(--ember);
  position: relative;
  padding: clamp(1.6rem, 2.6vw, 2.2rem);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--glass-strong), var(--glass));
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  overflow: hidden;
  transition: transform 0.5s var(--ease-out), border-color 0.4s, box-shadow 0.5s;
  will-change: transform;
}
.feature::after {
  /* spotlight that follows the cursor */
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  background: radial-gradient(
    320px circle at var(--mx, 50%) var(--my, 0%),
    rgba(255, 77, 52, 0.16),
    transparent 60%
  );
  transition: opacity 0.4s;
  pointer-events: none;
}
.feature:hover {
  transform: translateY(-8px);
  border-color: rgba(255, 77, 52, 0.45);
  box-shadow: 0 30px 60px -28px rgba(191, 29, 15, 0.6);
}
.feature:hover::after { opacity: 1; }
.feature .icon {
  display: grid;
  place-items: center;
  width: 52px; height: 52px;
  border-radius: 15px;
  background: rgba(255, 77, 52, 0.12);
  border: 1px solid rgba(255, 77, 52, 0.28);
  color: var(--ember-soft);
  margin-bottom: 1.4rem;
  transition: transform 0.5s var(--ease-out), background 0.4s;
}
.feature:hover .icon { transform: scale(1.08) rotate(-4deg); background: rgba(255, 77, 52, 0.2); }
.feature .icon svg { width: 26px; height: 26px; }
.feature h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.22rem;
  letter-spacing: -0.01em;
}
.feature p {
  margin-top: 0.7rem;
  color: var(--ink-mute);
  font-size: 0.96rem;
}
.feature .tag {
  display: inline-block;
  margin-top: 1.3rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: var(--ember-soft);
  padding: 0.35em 0.7em;
  border-radius: 8px;
  background: rgba(255, 77, 52, 0.08);
  border: 1px solid rgba(255, 77, 52, 0.2);
}
.feature .index {
  position: absolute;
  top: 1.2rem; right: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
}

/* ---------- Architecture ---------- */
.arch { padding-block: var(--section-pad); }
.arch-stage {
  margin-top: 1rem;
  padding: clamp(1.6rem, 4vw, 3.2rem);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(80% 120% at 50% -10%, rgba(191, 29, 15, 0.1), transparent 60%),
    var(--carbon-850);
  border: 1px solid var(--hairline);
  position: relative;
  overflow: hidden;
}
.arch-flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.8rem, 4vw, 2.6rem);
  position: relative;
  z-index: 2;
}
.arch-layer {
  text-align: center;
}
.layer-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 1rem;
}
.node-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}
.node {
  flex: 1 1 220px;
  max-width: 320px;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  text-align: left;
  padding: 1.1rem 1.25rem;
  border-radius: var(--radius);
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform 0.4s var(--ease-out), border-color 0.4s, background 0.4s;
}
.node:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 77, 52, 0.4);
  background: var(--glass-strong);
}
.node .n-ic {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 42px; height: 42px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
}
.node .n-ic svg { width: 22px; height: 22px; }
.node.accent .n-ic { background: rgba(255, 77, 52, 0.15); border-color: rgba(255, 77, 52, 0.35); color: var(--ember-soft); }
.node h4 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
}
.node span {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
}

/* connectors */
.connector {
  display: grid;
  place-items: center;
  height: 56px;
  position: relative;
}
.connector .line {
  width: 2px;
  height: 100%;
  background: linear-gradient(var(--ink-faint), transparent);
  position: relative;
  overflow: hidden;
  border-radius: 2px;
  opacity: 0.5;
}
.connector .line::after {
  content: "";
  position: absolute;
  left: -1px;
  top: -30%;
  width: 4px; height: 30%;
  border-radius: 4px;
  background: linear-gradient(var(--ember), transparent);
  box-shadow: 0 0 10px var(--ember);
  animation: travel 2.6s linear infinite;
}
.connector.up .line::after { animation-delay: 1.3s; }
@keyframes travel {
  0% { top: -35%; opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}
.connector .label {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  background: var(--carbon-850);
  padding: 0.2em 0.7em;
  border-radius: 100px;
  border: 1px solid var(--hairline);
  white-space: nowrap;
}

/* ---------- Results ---------- */
.results { padding-block: var(--section-pad); }
.results-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.result-list { list-style: none; display: grid; gap: 1rem; }
.result-list li {
  display: flex;
  gap: 1rem;
  padding: 1.15rem 1.3rem;
  border-radius: var(--radius);
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: transform 0.4s var(--ease-out), border-color 0.4s;
}
.result-list li:hover { transform: translateX(6px); border-color: rgba(255,77,52,0.4); }
.result-list .check {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  border-radius: 9px;
  background: rgba(56, 209, 106, 0.14);
  border: 1px solid rgba(56, 209, 106, 0.35);
  color: #58e08a;
}
.result-list .check svg { width: 16px; height: 16px; }
.result-list b {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.02rem;
  display: block;
}
.result-list span { font-size: 0.9rem; color: var(--ink-mute); }

.stat-cluster {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.stat-box {
  padding: 1.6rem 1.5rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(170deg, var(--glass-strong), var(--glass));
  border: 1px solid var(--glass-border);
  position: relative;
  overflow: hidden;
}
.stat-box:nth-child(1) { grid-row: span 1; }
.stat-box .num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.2rem, 5vw, 3rem);
  line-height: 1;
  letter-spacing: -0.03em;
  background: var(--flame-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat-box .lbl {
  margin-top: 0.6rem;
  font-size: 0.86rem;
  color: var(--ink-mute);
}

/* ---------- CTA footer ---------- */
.cta {
  padding-block: clamp(5rem, 10vw, 8rem);
  margin-top: var(--section-pad);
  position: relative;
}
.cta-card {
  position: relative;
  text-align: center;
  padding: clamp(3rem, 7vw, 5.5rem) clamp(1.5rem, 5vw, 4rem);
  border-radius: clamp(24px, 4vw, 38px);
  background:
    radial-gradient(90% 140% at 50% 0%, rgba(191, 29, 15, 0.28), transparent 60%),
    var(--carbon-850);
  border: 1px solid var(--glass-border);
  overflow: hidden;
}
.cta-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(255,122,99,0.5), transparent 40%, transparent 60%, rgba(255,77,52,0.4));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.cta-card h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 5.5vw, 3.6rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  max-width: 16ch;
  margin-inline: auto;
}
.cta-card h2 em {
  font-style: normal;
  background: var(--flame-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.cta-card p {
  margin: 1.3rem auto 2.4rem;
  color: var(--ink-soft);
  max-width: 50ch;
  font-size: 1.08rem;
}
.cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.site-footer {
  padding: 2.5rem var(--gutter) 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  border-top: 1px solid var(--hairline);
  color: var(--ink-mute);
  font-size: 0.86rem;
}
.site-footer a { color: var(--ink-soft); text-decoration: none; transition: color 0.3s; }
.site-footer a:hover { color: var(--ember-soft); }
.footer-links { display: flex; gap: 1.6rem; flex-wrap: wrap; }

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; gap: 3.5rem; }
  .device-stage { order: -1; }
  .device { transform: rotateY(-8deg) rotateX(4deg); }
  .results-grid { grid-template-columns: 1fr; }
  .brief-grid { grid-template-columns: 1fr; }
  .float-chip.sync { left: 0; }
  .float-chip.geo { right: 0; }
}

@media (max-width: 680px) {
  .nav-links { display: none; }
  .nav-cta-only { display: inline-flex; }
  .hero { padding-top: 7rem; min-height: auto; }
  .hero-meta { gap: 1.8rem; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { justify-content: center; }
  .node { flex-basis: 100%; }
  .connector .label { font-size: 0.55rem; }
  .site-footer { flex-direction: column; text-align: center; justify-content: center; }
}