/* iDesign4Solutions — Staging styles v2
   Dark-forward, dynamic, scroll-alive productized consultancy.
   Premium ops aesthetic — not crypto neon, not WP template. */

:root {
  /* Surfaces */
  --bg: #070a0f;
  --bg-elevated: #0d1219;
  --bg-soft: #111821;
  --bg-card: #0f151d;
  --bg-card-hover: #141c27;
  --bg-tint: #0c1615;
  --bg-deep: #05070b;

  /* Text */
  --text: #eef3f8;
  --text-soft: #c5ced8;
  --text-muted: #8a97a6;
  --ink: var(--text);

  /* Lines */
  --line: rgba(238, 243, 248, 0.07);
  --line-strong: rgba(238, 243, 248, 0.14);
  --line-glow: rgba(20, 184, 166, 0.35);

  /* Accent — teal */
  --accent: #14b8a6;
  --accent-hover: #2dd4bf;
  --accent-pressed: #0d9488;
  --accent-soft: rgba(20, 184, 166, 0.14);
  --accent-glow: rgba(20, 184, 166, 0.22);
  --accent-text: #5eead4;
  --focus: #2dd4bf;

  /* Semantic */
  --danger: #f87171;
  --danger-soft: rgba(248, 113, 113, 0.12);
  --warn-bg: rgba(251, 191, 36, 0.12);
  --warn-text: #fbbf24;
  --info-bg: rgba(129, 140, 248, 0.14);
  --info-text: #a5b4fc;

  --paper: var(--bg-card);
  --paper-warm: var(--bg-soft);
  --paper-tint: var(--bg-tint);

  --radius: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 10px 32px rgba(0, 0, 0, 0.32);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.45), 0 28px 64px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 0 1px rgba(20, 184, 166, 0.25), 0 12px 40px rgba(20, 184, 166, 0.12);

  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "IBM Plex Sans", "Inter", system-ui, sans-serif;
  --max: 1140px;
  --nav-h: 76px;
  --nav-h-compact: 60px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --grain: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; color-scheme: dark; overflow-x: hidden; }
body { overflow-x: hidden; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}
body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text-soft);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9998;
  opacity: 0.035;
  background-image: var(--grain);
  background-size: 180px 180px;
  mix-blend-mode: overlay;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text);
  margin: 0 0 0.6em;
}
h1 { font-size: clamp(2.4rem, 5.2vw, 3.75rem); font-weight: 750; letter-spacing: -0.04em; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.35rem); }
h3 { font-size: 1.22rem; font-weight: 680; }
p { margin: 0 0 1em; color: var(--text-soft); }
p.lead { font-size: 1.2rem; line-height: 1.55; color: var(--text-soft); max-width: 40rem; }
ul, ol { color: var(--text-soft); }
strong { color: var(--text); font-weight: 600; }

.container { width: min(100% - 2.5rem, var(--max)); margin-inline: auto; }
.container-narrow { width: min(100% - 2.5rem, 720px); margin-inline: auto; }

.skip-link {
  position: absolute; left: 1rem; top: -100px; z-index: 10000;
  background: var(--accent); color: #042f2e; padding: 0.6rem 1rem; border-radius: 6px;
  font-weight: 600;
}
.skip-link:focus { top: 1rem; }

/* —— Staging banner —— */
.staging-banner {
  background: #78350f; color: #fef3c7;
  text-align: center; font-size: 0.8rem; font-weight: 560;
  padding: 0.4rem 1rem; letter-spacing: 0.02em;
  position: relative; z-index: 101;
}
.staging-banner a { color: #fde68a; }

/* —— Nav —— */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(7, 10, 15, 0.72);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border-bottom: 1px solid var(--line);
  transition: background 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(7, 10, 15, 0.92);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  border-bottom-color: var(--line-strong);
}
.site-header.is-scrolled .nav { height: var(--nav-h-compact); }
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--nav-h); gap: 1rem;
  transition: height 0.3s var(--ease);
}
.logo {
  display: flex; align-items: center; gap: 0.65rem;
  text-decoration: none; color: var(--text); font-weight: 700; font-size: 1.05rem;
  letter-spacing: -0.02em; font-family: var(--font-display);
}
.logo:hover { color: var(--text); }
.logo-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(145deg, #1a2838, #0a1018);
  display: grid; place-items: center; flex-shrink: 0;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.1), 0 0 20px rgba(20, 184, 166, 0.15);
  transition: box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}
.logo:hover .logo-mark {
  box-shadow: inset 0 0 0 1px rgba(94, 234, 212, 0.35), 0 0 28px rgba(20, 184, 166, 0.28);
  transform: scale(1.04);
}
.logo-mark span {
  font-size: 0.62rem; font-weight: 700; color: var(--accent-text);
  letter-spacing: 0.02em; font-family: var(--font-display);
}
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-text small {
  font-size: 0.62rem; font-weight: 500; color: var(--text-muted);
  letter-spacing: 0.05em; text-transform: uppercase; font-family: var(--font);
}
.nav-links {
  display: flex; align-items: center; gap: 0.1rem; list-style: none; margin: 0; padding: 0;
}
.nav-links a {
  text-decoration: none; color: var(--text-soft); font-size: 0.94rem; font-weight: 500;
  padding: 0.45rem 0.75rem; border-radius: 7px;
  transition: color 0.2s, background 0.2s;
  position: relative;
}
.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute; left: 0.75rem; right: 0.75rem; bottom: 0.3rem;
  height: 1.5px; background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav-links a:not(.nav-cta):hover::after,
.nav-links a:not(.nav-cta)[aria-current="page"]::after { transform: scaleX(1); }
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,0.04); }
.nav-links a[aria-current="page"] { color: var(--text); }
.nav-cta {
  margin-left: 0.5rem !important;
  background: var(--accent) !important; color: #042f2e !important;
  padding: 0.5rem 1.05rem !important; border-radius: 9px !important;
  font-weight: 600 !important;
  box-shadow: 0 0 0 0 transparent;
  transition: background 0.2s, box-shadow 0.3s var(--ease), transform 0.25s var(--ease) !important;
}
.nav-cta:hover {
  background: var(--accent-hover) !important; color: #042f2e !important;
  box-shadow: 0 6px 24px rgba(20, 184, 166, 0.35) !important;
  transform: translateY(-1px);
}
.nav-cta[aria-current="page"] { background: var(--accent-hover) !important; }

.nav-toggle {
  display: none; background: none; border: 1px solid var(--line-strong);
  width: 42px; height: 42px; border-radius: 8px; cursor: pointer;
  align-items: center; justify-content: center; flex-direction: column; gap: 5px;
}
.nav-toggle span {
  display: block; width: 18px; height: 2px; background: var(--text); border-radius: 1px;
  transition: transform 0.25s var(--ease), opacity 0.2s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .nav-links {
    display: none; position: absolute; left: 0; right: 0; top: var(--nav-h);
    flex-direction: column; align-items: stretch;
    background: rgba(13, 18, 25, 0.98); border-bottom: 1px solid var(--line);
    padding: 0.75rem 1.25rem 1.25rem; gap: 0.25rem;
    box-shadow: var(--shadow); z-index: 200;
    backdrop-filter: blur(12px);
  }
  .site-header.is-scrolled .nav-links { top: var(--nav-h-compact); }
  body.nav-open { overflow: hidden; }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding: 0.75rem 1rem; }
  .nav-links a:not(.nav-cta)::after { display: none; }
  .nav-cta { margin-left: 0 !important; text-align: center; margin-top: 0.5rem !important; }
}

/* —— Buttons —— */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.45rem;
  font-family: inherit; font-size: 0.98rem; font-weight: 560;
  padding: 0.85rem 1.4rem; border-radius: 10px; border: 1px solid transparent;
  cursor: pointer; text-decoration: none;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.25s var(--ease), box-shadow 0.3s var(--ease);
  line-height: 1.2; position: relative;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--accent); color: #042f2e; font-weight: 600;
  box-shadow: 0 4px 16px rgba(20, 184, 166, 0.25);
}
.btn-primary:hover {
  background: var(--accent-hover); color: #042f2e;
  box-shadow: 0 8px 28px rgba(20, 184, 166, 0.4);
  transform: translateY(-2px);
}
.btn-secondary {
  background: transparent; color: var(--text);
  border-color: var(--line-strong);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.05); color: var(--text);
  border-color: rgba(94, 234, 212, 0.4);
  box-shadow: 0 0 0 1px rgba(20, 184, 166, 0.15);
  transform: translateY(-2px);
}
.btn-dark { background: var(--text); color: var(--bg); }
.btn-dark:hover { background: #fff; color: var(--bg); }
.btn-ghost { background: transparent; color: var(--accent); padding-inline: 0.5rem; }
.btn-ghost:hover { color: var(--accent-hover); }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }

/* —— Sections —— */
.section { padding: 5.5rem 0; position: relative; }
.section-sm { padding: 3.5rem 0; }
.section-tint {
  background:
    radial-gradient(ellipse 60% 50% at 10% 0%, rgba(20, 184, 166, 0.06), transparent 50%),
    var(--bg-soft);
}
.section-dark {
  background:
    radial-gradient(ellipse 50% 60% at 50% 100%, rgba(20, 184, 166, 0.08), transparent 55%),
    var(--bg-deep);
  color: var(--text-soft);
  border-block: 1px solid var(--line);
}
.section-dark h2, .section-dark h3, .section-dark strong { color: var(--text); }
.section-dark p, .section-dark li { color: var(--text-muted); }
.section-accent {
  background:
    radial-gradient(ellipse 70% 80% at 85% 15%, rgba(20, 184, 166, 0.14), transparent 55%),
    radial-gradient(ellipse 40% 50% at 5% 90%, rgba(20, 184, 166, 0.06), transparent 50%),
    linear-gradient(160deg, #0a1018 0%, #0c1817 55%, #080e14 100%);
  color: var(--text-soft);
  border-block: 1px solid var(--line);
  overflow: hidden;
}
.section-accent h2, .section-accent h3 { color: var(--text); }
.section-accent p { color: var(--text-muted); }

.eyebrow {
  display: inline-block; font-size: 0.76rem; font-weight: 650;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent);
  margin-bottom: 0.85rem;
}
.section-dark .eyebrow, .section-accent .eyebrow { color: var(--accent-text); }
.section-head { max-width: 40rem; margin-bottom: 2.75rem; }
.section-head.centered { margin-inline: auto; text-align: center; }

/* —— Hero —— */
.hero {
  padding: 5rem 0 5.5rem;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; pointer-events: none; overflow: hidden;
}
.hero-mesh {
  position: absolute; inset: -20% -10%;
  background:
    radial-gradient(ellipse 45% 40% at 78% 18%, rgba(20, 184, 166, 0.2), transparent 55%),
    radial-gradient(ellipse 35% 35% at 12% 78%, rgba(20, 184, 166, 0.08), transparent 50%),
    radial-gradient(ellipse 50% 40% at 50% 50%, rgba(15, 30, 45, 0.5), transparent 70%);
  will-change: transform;
}
.hero-grid-motif {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(238, 243, 248, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(238, 243, 248, 0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 70% 40%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 70% 40%, black 20%, transparent 70%);
  opacity: 0.7;
}
.hero-nodes {
  position: absolute; right: 5%; top: 15%; width: min(420px, 45vw); height: min(380px, 50vw);
  opacity: 0.55;
}
.hero-grid {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 3.25rem; align-items: center;
  position: relative; z-index: 1;
}
.hero h1 { margin-bottom: 1.1rem; }
.hero .lead { margin-bottom: 1.85rem; }
.hero-promise {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.85rem; color: var(--text-muted); margin-bottom: 1.25rem;
}
.hero-promise span {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 10px var(--accent);
}

/* Interactive 4Ds explorer */
.dd-explorer {
  background: linear-gradient(160deg, rgba(18, 24, 32, 0.95), rgba(12, 18, 26, 0.98));
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-xl);
  padding: 1.35rem;
  box-shadow: var(--shadow-lg), 0 0 60px rgba(20, 184, 166, 0.06);
  position: relative;
  overflow: hidden;
}
.dd-explorer::before {
  content: "";
  position: absolute; top: -40%; right: -20%; width: 60%; height: 80%;
  background: radial-gradient(circle, rgba(20, 184, 166, 0.1), transparent 65%);
  pointer-events: none;
}
.dd-explorer-title {
  font-family: var(--font-display);
  font-size: 0.95rem; font-weight: 700; color: var(--text);
  margin: 0 0 1rem; letter-spacing: -0.02em;
  position: relative;
}
.dd-tabs {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.4rem;
  margin-bottom: 1.15rem; position: relative;
}
.dd-tab {
  appearance: none; border: 1px solid var(--line);
  background: rgba(255,255,255,0.02);
  color: var(--text-muted); font-family: var(--font-display);
  font-size: 0.78rem; font-weight: 680; letter-spacing: -0.01em;
  padding: 0.65rem 0.35rem; border-radius: 9px; cursor: pointer;
  transition: color 0.25s, background 0.25s, border-color 0.25s, box-shadow 0.3s var(--ease), transform 0.25s var(--ease);
  text-align: center;
}
.dd-tab:hover {
  color: var(--text); border-color: var(--line-strong);
  background: rgba(255,255,255,0.04);
}
.dd-tab[aria-selected="true"] {
  color: #042f2e; background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 4px 18px rgba(20, 184, 166, 0.35);
  transform: translateY(-1px);
}
.dd-tab .dd-tab-num {
  display: block; font-size: 0.65rem; font-weight: 650;
  opacity: 0.7; letter-spacing: 0.06em; margin-bottom: 0.15rem;
  font-family: var(--font);
}
.dd-tab[aria-selected="true"] .dd-tab-num { opacity: 0.85; }
.dd-panels { position: relative; min-height: 9.5rem; }
.dd-panel {
  display: none; padding: 0.25rem 0.15rem 0.15rem;
}
.dd-panel.is-active {
  display: block;
  animation: panelIn 0.4s var(--ease-out) both;
}
.dd-panel h3 {
  font-size: 1.15rem; margin-bottom: 0.4rem;
  display: flex; align-items: center; gap: 0.55rem;
}
.dd-panel h3 .dd-icon {
  width: 28px; height: 28px; flex-shrink: 0;
  color: var(--accent-text);
}
.dd-panel p { font-size: 0.93rem; margin: 0 0 0.75rem; color: var(--text-muted); }
.dd-panel ul {
  margin: 0; padding: 0; list-style: none;
  display: grid; gap: 0.35rem;
}
.dd-panel li {
  font-size: 0.88rem; color: var(--text-soft);
  padding-left: 1rem; position: relative;
}
.dd-panel li::before {
  content: "";
  position: absolute; left: 0; top: 0.55em;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent);
}
.dd-progress {
  display: flex; gap: 0.35rem; margin-top: 1.1rem;
}
.dd-progress span {
  flex: 1; height: 3px; border-radius: 2px;
  background: rgba(255,255,255,0.08);
  transition: background 0.3s, box-shadow 0.3s;
}
.dd-progress span.is-on {
  background: var(--accent);
  box-shadow: 0 0 10px rgba(20, 184, 166, 0.5);
}

@keyframes panelIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

/* Path diagram (problem → solution) */
.path-flow {
  display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap;
  margin-top: 1.5rem; font-size: 0.82rem;
}
.path-flow .path-node {
  padding: 0.4rem 0.7rem; border-radius: 7px;
  border: 1px solid var(--line-strong);
  background: rgba(255,255,255,0.03);
  color: var(--text-soft); font-weight: 520;
}
.path-flow .path-node.is-end {
  border-color: rgba(20, 184, 166, 0.4);
  background: var(--accent-soft);
  color: var(--accent-text);
}
.path-flow .path-arrow {
  color: var(--accent); font-weight: 700; opacity: 0.7;
}

@media (max-width: 860px) {
  .hero { padding: 3.25rem 0 3.75rem; }
  .hero-grid { grid-template-columns: 1fr; gap: 2.25rem; }
  .hero-nodes { display: none; }
  .dd-tabs { grid-template-columns: repeat(2, 1fr); }
}

/* —— Trust strip —— */
.trust {
  border-block: 1px solid var(--line);
  padding: 1.65rem 0;
  background: var(--bg-elevated);
  position: relative;
}
.trust-inner {
  display: flex; flex-wrap: wrap; gap: 1.5rem 2.5rem;
  align-items: center; justify-content: space-between;
}
.trust-item {
  display: flex; flex-direction: column; gap: 0.15rem; min-width: 140px;
}
.trust-item strong {
  font-size: 0.92rem; color: var(--text);
  font-family: var(--font-display); font-weight: 680; letter-spacing: -0.02em;
}
.trust-item span { font-size: 0.85rem; color: var(--text-muted); }

/* —— Cards / grids —— */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.grid-6 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
@media (max-width: 900px) {
  .grid-3, .grid-6 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .grid-3, .grid-2, .grid-6 { grid-template-columns: 1fr; }
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.55rem 1.45rem;
  transition: border-color 0.3s, box-shadow 0.35s var(--ease), background 0.3s, transform 0.35s var(--ease);
  position: relative;
}
.card:hover {
  border-color: rgba(20, 184, 166, 0.35);
  box-shadow: var(--shadow), 0 0 0 1px rgba(20, 184, 166, 0.08);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}
.card-tint { background: var(--bg-soft); }
.card-featured {
  border-color: rgba(20, 184, 166, 0.35);
  box-shadow: 0 0 0 1px var(--accent-soft);
}
.card-featured::after {
  content: "Core";
  position: absolute; top: 1rem; right: 1rem;
  font-size: 0.68rem; font-weight: 650; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--accent-text);
  background: var(--accent-soft); padding: 0.2rem 0.5rem; border-radius: 4px;
}
.card-icon {
  width: 44px; height: 44px; border-radius: 11px;
  background: var(--accent-soft); color: var(--accent-text);
  display: grid; place-items: center; margin-bottom: 1.1rem;
  font-weight: 700; font-size: 0.85rem;
  transition: transform 0.35s var(--ease), box-shadow 0.35s;
}
.card:hover .card-icon {
  transform: scale(1.06);
  box-shadow: 0 0 20px rgba(20, 184, 166, 0.25);
}
.card-icon svg { width: 22px; height: 22px; }
.card h3 { margin-bottom: 0.45rem; }
.card p { font-size: 0.95rem; margin-bottom: 0; }
.card a.card-link {
  display: inline-flex; align-items: center; gap: 0.35rem;
  margin-top: 1.1rem; font-size: 0.9rem; font-weight: 560;
  text-decoration: none; color: var(--accent);
  position: relative;
}
.card a.card-link::after {
  content: "";
  position: absolute; left: 0; bottom: -2px; width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.card a.card-link:hover { color: var(--accent-hover); }
.card a.card-link:hover::after { transform: scaleX(1); }

.flow-arrow { color: var(--accent-text); font-weight: 600; font-size: 0.85rem; }

/* Problem → solution cards asymmetric */
.problem-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem;
}
@media (max-width: 900px) { .problem-grid { grid-template-columns: 1fr; } }
.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.6rem 1.45rem;
  transition: transform 0.35s var(--ease), border-color 0.3s, box-shadow 0.35s;
  position: relative;
  overflow: hidden;
}
.problem-card::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0; transition: opacity 0.3s;
}
.problem-card:hover {
  transform: translateY(-5px);
  border-color: rgba(20, 184, 166, 0.3);
  box-shadow: var(--shadow-glow);
}
.problem-card:hover::before { opacity: 1; }
.problem-card .card-icon { margin-bottom: 1rem; }

/* 4Ds static grid (homepage secondary) */
.dd-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem;
}
@media (max-width: 900px) { .dd-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .dd-grid { grid-template-columns: 1fr; } }
.dd-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: 1.45rem 1.25rem;
  transition: transform 0.35s var(--ease), border-color 0.3s, background 0.3s, box-shadow 0.35s;
  cursor: default;
}
.dd-card:hover {
  transform: translateY(-4px);
  border-color: rgba(20, 184, 166, 0.4);
  background: rgba(20, 184, 166, 0.06);
  box-shadow: 0 12px 32px rgba(0,0,0,0.3);
}
.dd-card .num {
  font-size: 0.75rem; font-weight: 700; color: var(--accent-text);
  letter-spacing: 0.06em; margin-bottom: 0.75rem;
  font-family: var(--font-display);
}
.dd-card h3 { font-size: 1.15rem; margin-bottom: 0.4rem; }
.dd-card p { font-size: 0.92rem; margin: 0; color: var(--text-muted); }

/* Work samples */
.badge {
  display: inline-block; font-size: 0.68rem; font-weight: 650;
  letter-spacing: 0.06em; text-transform: uppercase;
  padding: 0.25rem 0.55rem; border-radius: 4px;
  background: var(--warn-bg); color: var(--warn-text); margin-bottom: 0.75rem;
}
.badge-sample { background: var(--warn-bg); color: var(--warn-text); }
.badge-conceptual { background: var(--info-bg); color: var(--info-text); }
.work-meta {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
  font-size: 0.82rem; color: var(--text-muted); margin: 0.85rem 0 0;
}
.work-meta span {
  padding: 0.2rem 0.55rem; border-radius: 5px;
  background: rgba(255,255,255,0.04); border: 1px solid var(--line);
}

/* About */
.about-split {
  display: grid; grid-template-columns: 0.85fr 1.35fr; gap: 3rem; align-items: start;
}
@media (max-width: 760px) { .about-split { grid-template-columns: 1fr; gap: 1.5rem; } }
.portrait {
  aspect-ratio: 4/5; border-radius: var(--radius-xl);
  background:
    radial-gradient(ellipse 80% 60% at 50% 30%, rgba(20, 184, 166, 0.15), transparent 60%),
    linear-gradient(160deg, #1a2838, #0a1018 60%, #0c1817);
  display: grid; place-items: center; color: var(--accent-text);
  font-weight: 700; letter-spacing: 0.04em; font-size: 1.4rem;
  border: 1px solid var(--line-strong);
  font-family: var(--font-display);
  position: relative; overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.portrait::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(238,243,248,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(238,243,248,0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.5;
}
.portrait-inner { position: relative; z-index: 1; text-align: center; }
.portrait-inner small {
  display: block; font-size: 0.7rem; font-weight: 500;
  color: var(--text-muted); margin-top: 0.5rem;
  font-family: var(--font); letter-spacing: 0.08em; text-transform: uppercase;
}
.about-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.85rem;
  margin-top: 1.75rem;
}
@media (max-width: 500px) { .about-stats { grid-template-columns: 1fr; } }
.about-stat {
  padding: 1rem; border-radius: var(--radius);
  border: 1px solid var(--line); background: var(--bg-card);
}
.about-stat strong {
  display: block; font-family: var(--font-display);
  font-size: 0.95rem; margin-bottom: 0.25rem;
}
.about-stat span { font-size: 0.82rem; color: var(--text-muted); }

/* CTA band */
.cta-band {
  text-align: center; max-width: 38rem; margin-inline: auto;
}
.cta-band h2 { margin-bottom: 0.75rem; }
.cta-band p { margin-bottom: 1.5rem; margin-inline: auto; }

/* Page hero (inner) */
.page-hero {
  padding: 3.75rem 0 2.75rem;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse 50% 80% at 100% 0%, var(--accent-glow), transparent 50%),
    radial-gradient(ellipse 30% 50% at 0% 100%, rgba(20, 184, 166, 0.05), transparent 50%),
    var(--bg);
  position: relative; overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(238, 243, 248, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(238, 243, 248, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, black, transparent);
  -webkit-mask-image: linear-gradient(180deg, black, transparent);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { margin-bottom: 0.75rem; }
.page-hero .lead { margin-bottom: 0; }

/* —— Approach: immersive phases + progress —— */
.approach-layout {
  display: grid; grid-template-columns: 200px 1fr; gap: 2.5rem; align-items: start;
}
@media (max-width: 800px) {
  .approach-layout { grid-template-columns: 1fr; }
  .phase-rail { display: none; }
}
.phase-rail {
  position: sticky; top: calc(var(--nav-h-compact) + 1.5rem);
  padding: 1rem 0;
}
.phase-rail-list {
  list-style: none; margin: 0; padding: 0; position: relative;
}
.phase-rail-list::before {
  content: "";
  position: absolute; left: 7px; top: 8px; bottom: 8px; width: 2px;
  background: var(--line-strong);
}
.phase-rail-progress {
  position: absolute; left: 7px; top: 8px; width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent-text));
  box-shadow: 0 0 12px rgba(20, 184, 166, 0.5);
  height: 0; transform-origin: top;
  transition: height 0.1s linear;
}
.phase-rail a {
  display: flex; align-items: center; gap: 0.75rem;
  text-decoration: none; color: var(--text-muted);
  padding: 0.7rem 0; font-size: 0.88rem; font-weight: 550;
  transition: color 0.25s;
  position: relative;
}
.phase-rail a::before {
  content: "";
  width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid var(--line-strong);
  background: var(--bg);
  flex-shrink: 0; z-index: 1;
  transition: border-color 0.25s, background 0.25s, box-shadow 0.3s;
}
.phase-rail a.is-active { color: var(--text); }
.phase-rail a.is-active::before,
.phase-rail a.is-done::before {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 0 12px rgba(20, 184, 166, 0.45);
}
.phase-rail a .rail-label {
  font-family: var(--font-display); font-weight: 680; letter-spacing: -0.02em;
}
.phase-rail a .rail-num {
  display: block; font-size: 0.7rem; color: var(--text-muted);
  font-family: var(--font); font-weight: 500; letter-spacing: 0.04em;
}

.phase {
  display: grid; grid-template-columns: 110px 1fr; gap: 2rem;
  padding: 2.5rem 0; border-bottom: 1px solid var(--line);
  position: relative;
}
.phase:last-child { border-bottom: 0; }
.phase-num {
  font-size: 0.78rem; font-weight: 700; color: var(--accent);
  letter-spacing: 0.08em; font-family: var(--font-display);
}
.phase h3 { font-size: 1.5rem; }
.phase ul { margin: 0.75rem 0 0; padding-left: 1.15rem; }
.phase li { margin-bottom: 0.4rem; }
.phase-visual {
  margin-top: 1.25rem; padding: 1.1rem 1.25rem;
  border-radius: var(--radius);
  border: 1px dashed rgba(20, 184, 166, 0.3);
  background: rgba(20, 184, 166, 0.04);
  font-size: 0.9rem; color: var(--text-soft);
}
@media (max-width: 600px) {
  .phase { grid-template-columns: 1fr; gap: 0.5rem; }
}

/* Scroll progress bar (top) */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-text));
  z-index: 200; pointer-events: none;
  box-shadow: 0 0 12px rgba(20, 184, 166, 0.6);
  transform-origin: left;
}

/* Work case expand/collapse */
.case {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-bottom: 1.5rem;
  background: var(--bg-card);
  transition: border-color 0.3s, box-shadow 0.35s var(--ease), transform 0.35s var(--ease);
}
.case:hover {
  border-color: rgba(20, 184, 166, 0.28);
  box-shadow: var(--shadow);
}
.case.is-open {
  border-color: rgba(20, 184, 166, 0.4);
  box-shadow: var(--shadow-glow);
}
.case-head {
  padding: 1.5rem 1.5rem 1.25rem;
  border-bottom: 1px solid transparent;
  background: var(--bg-soft);
  cursor: pointer;
  list-style: none;
  display: block;
  width: 100%;
  text-align: left;
  font: inherit; color: inherit;
  border: none;
  transition: background 0.25s;
}
.case-head::-webkit-details-marker { display: none; }
.case-head:hover { background: var(--bg-card-hover); }
.case.is-open .case-head { border-bottom-color: var(--line); }
.case-head-inner {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem;
}
.case-toggle-icon {
  width: 32px; height: 32px; border-radius: 8px; flex-shrink: 0;
  border: 1px solid var(--line-strong);
  display: grid; place-items: center;
  color: var(--accent-text);
  transition: transform 0.35s var(--ease), background 0.25s;
  margin-top: 0.25rem;
}
.case.is-open .case-toggle-icon {
  transform: rotate(180deg);
  background: var(--accent-soft);
}
.case-body {
  padding: 0 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s var(--ease), padding 0.4s var(--ease);
}
.case.is-open .case-body {
  padding: 1.5rem;
  max-height: 1200px;
}
.case-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem 1.75rem;
}
@media (max-width: 700px) { .case-grid { grid-template-columns: 1fr; } }
.case-block h4 {
  font-size: 0.75rem; font-weight: 650; letter-spacing: 0.07em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 0.4rem;
  font-family: var(--font);
}
.case-block p { font-size: 0.95rem; margin: 0; }

/* Ways to work — interactive picker */
.ways {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
}
@media (max-width: 700px) { .ways { grid-template-columns: 1fr; } }
.way {
  padding: 1.4rem; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-card);
  transition: transform 0.3s var(--ease), border-color 0.25s, box-shadow 0.3s;
}
.way:hover {
  transform: translateY(-3px);
  border-color: rgba(20, 184, 166, 0.35);
  box-shadow: var(--shadow);
}
.way h3 { font-size: 1.05rem; margin-bottom: 0.35rem; }
.way p { font-size: 0.92rem; margin: 0; }

.ways-picker {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem;
  margin-bottom: 1.5rem;
}
@media (max-width: 600px) { .ways-picker { grid-template-columns: 1fr; } }
.way-pick {
  appearance: none; cursor: pointer;
  padding: 1.1rem 1rem; border-radius: var(--radius);
  border: 1px solid var(--line); background: var(--bg-card);
  color: var(--text-soft); text-align: left;
  font: inherit; transition: border-color 0.25s, background 0.25s, box-shadow 0.3s, transform 0.25s;
}
.way-pick:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}
.way-pick[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 0 0 1px rgba(20, 184, 166, 0.25), 0 8px 24px rgba(20, 184, 166, 0.12);
  color: var(--text);
}
.way-pick strong {
  display: block; font-family: var(--font-display);
  font-size: 0.98rem; margin-bottom: 0.25rem; color: var(--text);
}
.way-pick span { font-size: 0.82rem; color: var(--text-muted); }

/* Levels */
.levels {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
}
@media (max-width: 700px) { .levels { grid-template-columns: 1fr; } }
.level {
  padding: 1.4rem; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-card);
  transition: transform 0.3s var(--ease), border-color 0.25s, box-shadow 0.3s;
}
.level:hover {
  transform: translateY(-3px);
  border-color: rgba(20, 184, 166, 0.3);
  box-shadow: var(--shadow);
}
.level h3 { font-size: 1.05rem; margin-bottom: 0.35rem; }
.level p { font-size: 0.92rem; margin: 0; }
.level .level-label {
  display: inline-block; font-size: 0.7rem; font-weight: 650;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--accent-text); margin-bottom: 0.5rem;
}

/* Forms */
.form { display: grid; gap: 1.15rem; max-width: 560px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.15rem; }
@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 0.35rem; }
.field label { font-size: 0.9rem; font-weight: 560; color: var(--text); }
.field .hint { font-size: 0.8rem; color: var(--text-muted); font-weight: 400; }
.field input, .field select, .field textarea {
  font-family: inherit; font-size: 1rem;
  padding: 0.75rem 0.9rem; border: 1px solid var(--line-strong);
  border-radius: 9px; background: var(--bg-elevated); color: var(--text);
  transition: border-color 0.2s, box-shadow 0.25s var(--ease), background 0.2s;
}
.field input::placeholder, .field textarea::placeholder { color: var(--text-muted); }
.field select option { background: var(--bg-elevated); color: var(--text); }
.field input:hover, .field select:hover, .field textarea:hover {
  border-color: rgba(238, 243, 248, 0.22);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow), 0 0 24px rgba(20, 184, 166, 0.1);
  background: var(--bg-soft);
}
.field textarea { min-height: 140px; resize: vertical; }
.field.has-error input, .field.has-error select, .field.has-error textarea {
  border-color: var(--danger);
}
.field-error { font-size: 0.82rem; color: var(--danger); display: none; }
.field.has-error .field-error { display: block; }
.form-note { font-size: 0.88rem; color: var(--text-muted); margin: 0; }
.form-success {
  display: none; padding: 1rem 1.15rem; border-radius: 8px;
  background: var(--accent-soft); color: var(--accent-text); font-weight: 500;
  margin-bottom: 1rem;
}
.form-success.is-visible { display: block; }

.contact-layout {
  display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 3rem; align-items: start;
}
@media (max-width: 800px) { .contact-layout { grid-template-columns: 1fr; } }
.contact-aside {
  background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: var(--radius-xl); padding: 1.6rem;
  position: sticky; top: calc(var(--nav-h-compact) + 1.25rem);
}
.contact-aside h3 { font-size: 1.05rem; }
.contact-aside ul { margin: 0.5rem 0 0; padding-left: 1.1rem; }
.contact-aside li { margin-bottom: 0.4rem; font-size: 0.95rem; }

/* Service filter + cards */
.svc-filter {
  display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 2rem;
}
.svc-filter-btn {
  appearance: none; cursor: pointer;
  padding: 0.55rem 1rem; border-radius: 999px;
  border: 1px solid var(--line-strong); background: transparent;
  color: var(--text-soft); font: inherit; font-size: 0.9rem; font-weight: 550;
  transition: background 0.25s, color 0.25s, border-color 0.25s, box-shadow 0.3s;
}
.svc-filter-btn:hover {
  border-color: rgba(20, 184, 166, 0.4); color: var(--text);
}
.svc-filter-btn[aria-pressed="true"] {
  background: var(--accent); color: #042f2e; border-color: var(--accent);
  box-shadow: 0 4px 16px rgba(20, 184, 166, 0.3);
  font-weight: 600;
}

.service-block {
  padding: 2.15rem 0;
  border-bottom: 1px solid var(--line);
  display: grid; grid-template-columns: 1fr 1.6fr; gap: 2rem;
  transition: opacity 0.35s, transform 0.35s var(--ease);
}
.service-block.is-hidden {
  display: none;
}
.service-block:last-child { border-bottom: 0; }
.service-block.featured-svc .svc-label {
  display: inline-block; font-size: 0.7rem; font-weight: 650;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--accent-text); background: var(--accent-soft);
  padding: 0.2rem 0.5rem; border-radius: 4px; margin-bottom: 0.5rem;
}
.svc-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--accent-soft); color: var(--accent-text);
  display: grid; place-items: center; margin-bottom: 1rem;
}
.svc-icon svg { width: 24px; height: 24px; }
@media (max-width: 700px) {
  .service-block { grid-template-columns: 1fr; gap: 0.75rem; }
}

/* Footer */
.site-footer {
  background: var(--bg-deep);
  color: var(--text-muted);
  padding: 3.5rem 0 2rem;
  margin-top: auto;
  border-top: 1px solid var(--line);
}
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2.5rem;
  padding-bottom: 2.5rem; border-bottom: 1px solid var(--line);
}
@media (max-width: 700px) {
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
}
.site-footer .logo { color: var(--text); margin-bottom: 0.75rem; }
.site-footer .logo:hover { color: var(--text); }
.site-footer .logo-text small { color: var(--text-muted); }
.site-footer p { color: var(--text-muted); font-size: 0.92rem; max-width: 28rem; }
.footer-col h4 {
  color: var(--text); font-size: 0.8rem; font-weight: 650;
  letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 0.85rem;
  font-family: var(--font);
}
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 0.45rem; }
.footer-col a {
  color: var(--text-soft); text-decoration: none; font-size: 0.95rem;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--accent-text); }
.footer-ways {
  display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.5rem;
}
.footer-ways span {
  font-size: 0.8rem; color: var(--text-soft);
  background: rgba(255,255,255,0.04); border: 1px solid var(--line-strong);
  padding: 0.35rem 0.65rem; border-radius: 6px;
}
.footer-bottom {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem;
  padding-top: 1.5rem; font-size: 0.85rem;
}

/* Utils */
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.list-clean { list-style: none; padding: 0; margin: 0; }
.divider { height: 1px; background: var(--line); border: 0; margin: 0; }

/* —— Scroll reveals (alive by default) —— */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
    transition-delay: var(--reveal-delay, 0ms);
  }
  .reveal.is-visible { opacity: 1; transform: none; }

  .reveal-left {
    opacity: 0;
    transform: translateX(-28px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
    transition-delay: var(--reveal-delay, 0ms);
  }
  .reveal-left.is-visible { opacity: 1; transform: none; }

  .reveal-right {
    opacity: 0;
    transform: translateX(28px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
    transition-delay: var(--reveal-delay, 0ms);
  }
  .reveal-right.is-visible { opacity: 1; transform: none; }

  .reveal-scale {
    opacity: 0;
    transform: scale(0.94);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
    transition-delay: var(--reveal-delay, 0ms);
  }
  .reveal-scale.is-visible { opacity: 1; transform: none; }

  .stagger > .reveal:nth-child(1) { --reveal-delay: 0ms; }
  .stagger > .reveal:nth-child(2) { --reveal-delay: 80ms; }
  .stagger > .reveal:nth-child(3) { --reveal-delay: 160ms; }
  .stagger > .reveal:nth-child(4) { --reveal-delay: 240ms; }
  .stagger > .reveal:nth-child(5) { --reveal-delay: 320ms; }
  .stagger > .reveal:nth-child(6) { --reveal-delay: 400ms; }

  .phase.reveal {
    transform: translateY(36px);
  }
  .phase.reveal.is-visible { transform: none; }

  /* Soft float for decorative nodes */
  @keyframes floatSoft {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
  }
  .hero-nodes svg .float-a { animation: floatSoft 7s ease-in-out infinite; }
  .hero-nodes svg .float-b { animation: floatSoft 9s ease-in-out infinite 1s; }
  .hero-nodes svg .float-c { animation: floatSoft 8s ease-in-out infinite 2s; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-left, .reveal-right, .reveal-scale,
  .phase.reveal {
    opacity: 1; transform: none; transition: none;
  }
  .dd-panel.is-active { animation: none; }
  .card:hover, .problem-card:hover, .dd-card:hover,
  .way:hover, .level:hover, .btn-primary:hover, .btn-secondary:hover {
    transform: none;
  }
  .hero-mesh { transform: none !important; }
  .scroll-progress { display: none; }
  .hero-nodes svg .float-a,
  .hero-nodes svg .float-b,
  .hero-nodes svg .float-c { animation: none; }
}

/* Focus visibility */
:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}
a:focus:not(:focus-visible), button:focus:not(:focus-visible) { outline: none; }

/* Asymmetric overlap helper */
.overlap-panel {
  margin-top: -2.5rem; position: relative; z-index: 2;
}
@media (max-width: 860px) { .overlap-panel { margin-top: 0; } }

/* Mobile overflow guard */
@media (max-width: 860px) {
  .hero-grid, .dd-explorer, .path-steps, .workflow-strip, .problem-path, .ops-path {
    max-width: 100%;
  }
  .dd-explorer, .problem-path, .path-track {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  body { overflow-x: hidden; }
}