:root {
  --orange: #f7a72b;
  --orange-d: #e08a0c;
  --blue: #549bcc;
  --blue-d: #2f76a8;
  --navy: #14283a;
  --ink: #1d2733;
  --text: #46525f;
  --gray: #f3f4f6;
  --line: #dfe3e8;
  --white: #ffffff;
  --head: "Urbanist", system-ui, sans-serif;
  --body: "Merriweather Sans", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--gray); color: var(--text); font-family: var(--body); font-size: 16px; line-height: 1.7; overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { color: var(--blue-d); }
h1, h2, h3 { font-family: var(--head); color: var(--ink); line-height: 1.1; margin: 0 0 16px; letter-spacing: -.01em; }
h2 { font-size: clamp(30px, 4vw, 44px); font-weight: 800; }
h3 { font-size: 19px; font-weight: 700; }
p { margin: 0 0 16px; }
.kicker { font-family: var(--head); font-weight: 700; text-transform: uppercase; letter-spacing: .14em; font-size: 13px; color: var(--blue-d); display: inline-flex; align-items: center; gap: 10px; }
.kicker .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 4px rgba(247,167,43,.25); }

/* header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(243,244,246,.85); backdrop-filter: blur(10px); transition: box-shadow .25s, background .25s; }
.site-header.scrolled { background: rgba(255,255,255,.95); box-shadow: 0 6px 24px rgba(20,40,58,.08); }
.bar { max-width: 1200px; margin: 0 auto; padding: 14px 24px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font-family: var(--head); font-size: 21px; font-weight: 700; color: var(--ink); }
.brand img { width: 40px; height: 40px; border-radius: 10px; object-fit: cover; }
.brand b { color: var(--blue-d); font-weight: 800; }
.primary-nav { display: flex; align-items: center; gap: 26px; }
.primary-nav a { font-family: var(--head); font-weight: 600; font-size: 16px; color: var(--ink); text-decoration: none; position: relative; }
.primary-nav a:not(.nav-cta)::after { content: ""; position: absolute; left: 0; right: 0; bottom: -4px; height: 2px; background: var(--orange); transform: scaleX(0); transition: transform .25s; }
.nav-cta { background: var(--navy); color: #fff !important; padding: 9px 18px; border-radius: 999px; }
.nav-toggle { display: none; background: none; border: 0; width: 44px; height: 44px; padding: 10px; cursor: pointer; }
.nav-toggle span { display: block; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; font-family: var(--head); font-weight: 700; font-size: 16px; padding: 14px 26px; border-radius: 12px; text-decoration: none; transition: transform .2s, box-shadow .2s, background .2s, color .2s; }
.btn-orange { background: var(--orange); color: var(--navy); }
.btn-blue { background: var(--blue-d); color: #fff; }
.btn-line { border: 2px solid var(--ink); color: var(--ink); }

/* hero */
.hero { max-width: 1200px; margin: 0 auto; padding: 64px 24px 72px; display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(42px, 6vw, 74px); font-weight: 800; margin: 18px 0 22px; }
.hero h1 em { font-style: normal; color: var(--blue-d); background: linear-gradient(transparent 62%, rgba(247,167,43,.45) 62%); }
.lede { font-size: 18px; max-width: 540px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.hero-mesh { position: relative; }
.hero-mesh svg { width: 100%; height: auto; overflow: visible; }
.plane polygon { fill: rgba(84,155,204,.08); stroke: rgba(84,155,204,.45); stroke-width: 1.5; }
.p2 polygon { fill: rgba(247,167,43,.10); stroke: rgba(224,138,12,.5); }
.plane { animation: float 6s ease-in-out infinite; }
.p2 { animation-delay: -2s; }
.p3 { animation-delay: -4s; }
.links path { fill: none; stroke: #9fb4c6; stroke-width: 1.4; stroke-dasharray: 4 5; }
.pulse { fill: none; stroke: var(--orange); stroke-width: 4; stroke-linecap: round; stroke-dasharray: 40 600; animation: travel 4.2s linear infinite; }
.pulse.b { stroke: var(--blue); animation-delay: -1.4s; }
.pulse.c { animation-delay: -2.8s; }
.nodes circle { fill: var(--blue); stroke: #fff; stroke-width: 3; transform-box: fill-box; transform-origin: center; animation: blink 3s ease-in-out infinite; }
.nodes circle.o { fill: var(--orange); }
.nodes circle:nth-child(2n) { animation-delay: -1s; }
.nodes circle:nth-child(3n) { animation-delay: -2s; }
.layer-tags { list-style: none; margin: 0; padding: 0; position: absolute; right: -6px; top: 6%; display: grid; gap: 70px; }
.layer-tags li { font-family: var(--head); font-weight: 700; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink); background: #fff; border: 1px solid var(--line); padding: 5px 10px; border-radius: 8px; box-shadow: 0 4px 12px rgba(20,40,58,.06); }
@keyframes travel { from { stroke-dashoffset: 640; } to { stroke-dashoffset: 0; } }
@keyframes blink { 0%,100% { transform: scale(1); } 50% { transform: scale(1.35); } }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }

/* layers stacked */
.layers { max-width: 1200px; margin: 0 auto; padding: 24px 24px 96px; display: grid; gap: 0; }
.layer { display: grid; grid-template-columns: 170px 1fr; gap: 32px; padding: 48px 44px; border-radius: 26px; position: relative; scroll-margin-top: 90px; }
.l1 { background: #fff; border: 1px solid var(--line); box-shadow: 0 18px 40px rgba(20,40,58,.06); margin-right: 8%; z-index: 3; }
.l2 { background: var(--navy); margin: -26px 4% 0; padding-top: 74px; z-index: 2; }
.l3 { background: var(--blue-d); margin: -26px 0 0 8%; padding-top: 74px; z-index: 1; }
.layer-num span { display: block; font-family: var(--head); font-weight: 800; font-size: 72px; line-height: 1; color: var(--orange); }
.layer-num small { font-family: var(--head); font-weight: 700; text-transform: uppercase; letter-spacing: .14em; font-size: 12px; color: var(--text); }
.layer-body > p { font-size: 17px; max-width: 720px; }
.l2 h2, .l3 h2 { color: #fff; }
.l2 p, .l3 p, .l2 .layer-num small, .l3 .layer-num small { color: rgba(245,247,252,.92); }
.l3 .layer-num span { color: #ffd38a; }
.chips { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 24px; }
.chip { background: var(--gray); border: 1px solid var(--line); border-radius: 16px; padding: 22px; border-top: 4px solid var(--orange); transition: transform .25s, box-shadow .25s, border-color .25s; }
.chip:nth-child(2) { border-top-color: var(--blue); }
.chip p { margin: 0; font-size: 15px; }
.pattern-list { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 10px; }
.pattern-list li { display: grid; grid-template-columns: 220px 1fr; gap: 18px; padding: 16px 20px; border-radius: 14px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12); transition: transform .25s, background .25s; }
.pattern-list b { font-family: var(--head); font-size: 18px; color: #ffd38a; }
.pattern-list span { color: rgba(245,247,252,.92); font-size: 15px; }
.text-link { display: inline-flex; gap: 8px; font-family: var(--head); font-weight: 700; font-size: 18px; color: #fff; text-decoration: none; border-bottom: 2px solid var(--orange); padding-bottom: 4px; transition: gap .2s; }

/* quote */
.quote-band { background: var(--orange); padding: 88px 24px; }
.quote-inner { max-width: 900px; margin: 0 auto; text-align: center; }
.q-mesh { width: 120px; margin: 0 auto 18px; }
.q-mesh path { fill: none; stroke: var(--navy); stroke-width: 3; }
.q-mesh circle { fill: var(--navy); }
.quote-band blockquote { margin: 0 0 14px; font-family: var(--head); font-weight: 800; font-size: clamp(28px, 4vw, 44px); line-height: 1.2; color: var(--navy); }
.quote-band p { font-family: var(--head); font-weight: 700; text-transform: uppercase; letter-spacing: .14em; font-size: 13px; color: #3a2a08; margin: 0; }

/* faq */
.faq { padding: 96px 24px; }
.faq-wrap { max-width: 1120px; margin: 0 auto; display: grid; grid-template-columns: .8fr 1.2fr; gap: 48px; align-items: start; }
.faq-list { display: grid; gap: 12px; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 14px; border-left: 4px solid var(--blue); transition: transform .2s, box-shadow .2s, border-color .2s; }
.faq-item:nth-child(2n) { border-left-color: var(--orange); }
.faq-q { width: 100%; text-align: left; background: none; border: 0; cursor: pointer; padding: 18px 20px; display: flex; justify-content: space-between; gap: 16px; align-items: center; font-family: var(--head); font-weight: 700; font-size: 18px; color: var(--ink); }
.pm { position: relative; width: 16px; height: 16px; flex: none; }
.pm::before, .pm::after { content: ""; position: absolute; left: 0; top: 7px; width: 16px; height: 2px; background: var(--blue-d); transition: transform .25s; }
.pm::after { transform: rotate(90deg); }
.faq-item.open .pm::after { transform: rotate(0); }
.faq-a { display: none; padding: 0 20px 18px; }
.faq-a p { margin: 0; }
.faq-item.open .faq-a { display: block; }

/* contact */
.contact { padding: 0 24px 96px; }
.contact-card { max-width: 1120px; margin: 0 auto; background: #fff; border: 1px solid var(--line); border-radius: 26px; padding: 48px; display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; align-items: center; box-shadow: 0 18px 40px rgba(20,40,58,.06); background-image: radial-gradient(circle at 100% 0, rgba(84,155,204,.14), transparent 45%), radial-gradient(circle at 0 100%, rgba(247,167,43,.14), transparent 40%); }
.contact-links { display: grid; gap: 12px; }

/* footer */
.site-footer { background: var(--navy); padding: 36px 24px; }
.foot { max-width: 1200px; margin: 0 auto; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 14px 24px; }
.foot .brand { color: #fff; font-size: 18px; }
.foot .brand b { color: #9dd0f2; }
.foot .brand img { width: 32px; height: 32px; }
.foot p { margin: 0; color: rgba(245,247,252,.85); font-size: 14px; }
.foot a { color: #ffd38a; }

/* reveal */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.in { opacity: 1; transform: none; }

@media (hover: hover) and (pointer: fine) {
  .primary-nav a:not(.nav-cta):hover::after { transform: scaleX(1); }
  .nav-cta:hover { background: var(--blue-d); }
  .btn:hover { transform: translateY(-3px); box-shadow: 0 10px 22px rgba(20,40,58,.18); }
  .btn-orange:hover { background: #ffb848; }
  .btn-line:hover { background: var(--ink); color: #fff; }
  .chip:hover { transform: translateY(-6px); box-shadow: 0 14px 28px rgba(20,40,58,.1); background: #fff; }
  .pattern-list li:hover { transform: translateX(8px); background: rgba(255,255,255,.12); }
  .text-link:hover { gap: 14px; }
  .faq-item:hover { transform: translateX(6px); box-shadow: 0 8px 20px rgba(20,40,58,.08); border-left-color: var(--navy); }
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 40px; }
  .hero-mesh { max-width: 460px; margin: 0 auto; width: 100%; }
  .layer-tags { right: 0; }
  .layer { grid-template-columns: 1fr; gap: 12px; padding: 36px 26px; }
  .l1, .l2, .l3 { margin-left: 0; margin-right: 0; }
  .l2, .l3 { padding-top: 60px; }
  .layer-num { display: flex; align-items: baseline; gap: 12px; }
  .layer-num span { font-size: 52px; }
  .chips { grid-template-columns: 1fr; }
  .pattern-list li { grid-template-columns: 1fr; gap: 4px; }
  .faq-wrap, .contact-card { grid-template-columns: 1fr; gap: 28px; }
  .contact-card { padding: 34px 24px; }
}
@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .primary-nav { position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0; background: #fff; padding: 8px 24px 20px; box-shadow: 0 14px 28px rgba(20,40,58,.12); display: none; }
  .primary-nav.open { display: flex; }
  .primary-nav a { padding: 13px 0; border-bottom: 1px solid var(--line); }
  .primary-nav a::after { display: none; }
  .nav-cta { margin-top: 12px; text-align: center; border-bottom: 0 !important; }
  .hero h1 { font-size: 42px; }
  .lede { font-size: 17px; }
  .cta-row .btn { flex: 1 1 100%; }
  .layer-tags { gap: 52px; }
  .layer-tags li { font-size: 10px; }
  .quote-band { padding: 64px 24px; }
  .faq { padding: 72px 20px; }
  .faq-q { font-size: 17px; }
  .contact { padding: 0 16px 72px; }
  .foot { flex-direction: column; align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .js .reveal { opacity: 1; transform: none; }
}