/* ============ Tokens ============ */
:root {
  --color-primary: #19C0D6;
  --color-primary-deep: #14A0B5;
  --color-ink: #1A1A1A;
  --color-body: #4A5568;
  --color-tint: #D9E5EB;
  --color-soft: #F5F7F9;
  --color-bg: #FFFFFF;
  --color-dark: #0F1A24;
  --color-darker: #0A1218;

  --font-head: 'Montserrat', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-card: 0 2px 8px rgba(0,0,0,.06);
  --shadow-card-hover: 0 12px 32px rgba(0,0,0,.10);

  --container-max: 1200px;
  --pad-x: 64px;
}

@media (max-width: 768px) {
  :root { --pad-x: 24px; }
}

/* ============ Reset ============ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-body);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; height: auto; }
a { color: var(--color-primary-deep); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font: inherit; cursor: pointer; }
ul { padding: 0; margin: 0; list-style: none; }

/* ============ Typography ============ */
h1, h2, h3 {
  font-family: var(--font-head);
  color: var(--color-ink);
  margin: 0 0 .5em;
  line-height: 1.2;
}
h1 { font-size: clamp(2.25rem, 4vw + 1rem, 3.5rem); font-weight: 800; letter-spacing: -.01em; }
h2 { font-size: clamp(1.75rem, 2vw + 1rem, 2.5rem); font-weight: 700; }
h3 { font-size: 1.375rem; font-weight: 600; }
p  { margin: 0 0 1em; }
.lede { font-size: 1.125rem; color: var(--color-ink); }
.hl { color: var(--color-primary); }

/* ============ Reveal animation (JS-gated, fail-open) ============ */
@media (prefers-reduced-motion: no-preference) {
  .reveal-init { opacity: 0; transform: translateY(16px); transition: opacity .5s ease, transform .5s ease; }
  .reveal-in { opacity: 1; transform: translateY(0); }
}

/* ============ Skip link ============ */
.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--color-ink); color: #fff; padding: 8px 12px;
  z-index: 1000;
}
.skip-link:focus { left: 8px; top: 8px; }

/* ============ Layout primitives ============ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}
.section { padding: 96px 0; }
.section + .section { border-top: 1px solid rgba(0,0,0,.04); }
.section-about, .section-why, .section-target { background: var(--color-bg); }
.section-services, .section-values { background: var(--color-soft); }
.section-head { max-width: 760px; margin-bottom: 48px; }

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-head { margin-bottom: 32px; }
}

/* ============ Buttons ============ */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-family: var(--font-body);
  text-decoration: none;
  transition: transform .15s, box-shadow .15s, background .15s;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-primary-deep);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(25,192,214,.35);
}

/* ============ Sticky nav ============ */
.site-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0,0,0,.06);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 14px; padding-bottom: 14px;
}
.nav-logo img { height: 40px; width: auto; }
.nav-menu {
  display: flex; gap: 36px;
}
.nav-menu a {
  color: var(--color-ink);
  font-weight: 500;
}
.nav-menu a:hover { color: var(--color-primary-deep); text-decoration: none; }
.nav-cta a {
  background: var(--color-primary);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: 999px;
  font-weight: 600;
  transition: background .15s, transform .15s, box-shadow .15s;
}
.nav-cta a:hover {
  background: var(--color-primary-deep);
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(25,192,214,.35);
}
.nav-cta span { margin-left: 4px; }
.nav-toggle {
  display: none;
  background: transparent; border: 0; padding: 6px;
  color: var(--color-ink);
}
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-menu { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-menu {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: #fff;
    padding: 16px var(--pad-x);
    border-bottom: 1px solid rgba(0,0,0,.08);
    transform: translateY(-12px);
    opacity: 0; pointer-events: none;
    transition: opacity .15s, transform .15s;
  }
  .nav-menu.open { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .nav-menu li { padding: 14px 0; border-bottom: 1px solid rgba(0,0,0,.04); }
  .nav-menu li:last-child { border-bottom: 0; }
}

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 80vh;
  display: flex; align-items: center;
  background:
    radial-gradient(ellipse at top right, rgba(25,192,214,.08), transparent 50%),
    radial-gradient(ellipse at bottom left, rgba(25,192,214,.06), transparent 50%),
    linear-gradient(180deg, #FFFFFF 0%, #F5F9FB 100%);
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  opacity: .8;
  pointer-events: none;
}
.hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.hero-inner {
  position: relative; z-index: 1;
  text-align: center;
  padding-top: 80px; padding-bottom: 80px;
}
.hero-logo {
  max-height: 140px;
  width: auto;
  margin: 0 auto 32px;
}
.hero-title {
  color: var(--color-ink);
  margin-bottom: 16px;
}
.hero-sub {
  font-size: 1.25rem;
  color: var(--color-body);
  margin: 0 auto 36px;
  max-width: 640px;
}

@media (max-width: 768px) {
  .hero { min-height: 65vh; }
  .hero-logo { max-height: 100px; margin-bottom: 24px; }
  .hero-sub { font-size: 1.0625rem; }
}

/* ============ About ============ */
.vm-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 32px;
  margin-top: 32px;
}
.vm-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-card);
  border-top: 4px solid var(--color-primary);
}
.vm-card h3 { color: var(--color-primary-deep); }
@media (max-width: 768px) {
  .vm-grid { grid-template-columns: 1fr; gap: 16px; }
  .vm-card { padding: 24px; }
}

/* ============ Services ============ */
.services-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.service-card {
  position: relative;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px 24px 28px;
  box-shadow: var(--shadow-card);
  transition: transform .25s, box-shadow .25s;
  overflow: hidden;
}
.service-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--color-primary);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}
.service-num {
  font-family: var(--font-head); font-weight: 800;
  color: var(--color-primary);
  font-size: 1.25rem;
}
.service-icon {
  margin: 14px 0 8px;
  color: var(--color-ink);
}
.service-tag {
  font-weight: 600; color: var(--color-ink); margin-bottom: 6px;
}
.service-card p:last-child { margin-bottom: 0; }

@media (max-width: 1024px) { .services-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px)  { .services-grid { grid-template-columns: 1fr; } }

/* ============ Why Us ============ */
.why-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.why-tile {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 28px;
  border-left: 3px solid var(--color-primary);
  box-shadow: var(--shadow-card);
}
.why-tile h3 { color: var(--color-primary-deep); }
.why-tile p:last-child { margin-bottom: 0; }
@media (max-width: 1024px) { .why-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px)  { .why-grid { grid-template-columns: 1fr; } }

/* ============ Core Values ============ */
.values-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px;
}
.value-cell {
  display: flex; flex-direction: column; gap: 8px;
}
.value-cell h3 {
  font-size: 1.125rem;
  display: flex; align-items: baseline; gap: 8px;
}
.value-cell .letter {
  color: var(--color-primary);
  font-size: 1.5rem; font-weight: 800;
}
.value-cell img {
  width: 28px; height: 28px;
  color: var(--color-primary-deep);
  margin-bottom: 8px;
}
.value-cell p:last-child { margin-bottom: 0; }
@media (max-width: 768px) { .values-grid { grid-template-columns: 1fr 1fr; gap: 28px; } }
@media (max-width: 480px) { .values-grid { grid-template-columns: 1fr; } }

/* ============ Target Market ============ */
.target-inner {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 64px; align-items: center;
}
.target-list li {
  padding: 16px 0 16px 32px;
  border-bottom: 1px solid rgba(0,0,0,.06);
  position: relative;
  color: var(--color-ink);
}
.target-list li:last-child { border-bottom: 0; }
.target-list li::before {
  content: ""; position: absolute; left: 0; top: 50%;
  width: 12px; height: 12px; transform: translateY(-50%);
  border: 2px solid var(--color-primary); border-radius: 50%;
}
.target-visual { opacity: .8; }
@media (max-width: 768px) {
  .target-inner { grid-template-columns: 1fr; gap: 32px; }
  .target-visual { display: none; }
}

/* ============ Contact ============ */
.section-contact {
  background: var(--color-dark);
  color: rgba(255,255,255,.92);
  position: relative;
  overflow: hidden;
}
.section-contact::before {
  content: ""; position: absolute;
  top: -120px; right: -120px;
  width: 360px; height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(25,192,214,.18), transparent 70%);
  pointer-events: none;
}
.section-contact h2,
.section-contact h3 { color: #fff; }
.section-contact .lede { color: rgba(255,255,255,.85); }
.section-contact a { color: var(--color-primary); }
.section-contact a:hover { color: #fff; }
.contact-list {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px 48px;
  margin-top: 32px;
  position: relative; z-index: 1;
}
.contact-list li {
  padding: 20px 0;
  border-top: 1px solid rgba(255,255,255,.08);
  color: rgba(255,255,255,.92);
  line-height: 1.55;
}
.contact-list li a { word-break: break-word; }
.contact-list strong {
  display: block;
  font-family: var(--font-head);
  color: rgba(255,255,255,.5);
  font-size: .75rem; letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 8px;
  font-weight: 600;
}
@media (max-width: 900px) {
  .contact-list { grid-template-columns: repeat(2, 1fr); gap: 24px 32px; }
}
@media (max-width: 540px) {
  .contact-list { grid-template-columns: 1fr; gap: 0; }
}

/* ============ Footer ============ */
.site-footer {
  background: var(--color-darker);
  color: rgba(255,255,255,.7);
  padding: 56px 0 32px;
}
.footer-inner {
  display: grid; grid-template-columns: 2fr 1fr; gap: 32px; align-items: start;
}
.footer-wordmark {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.75rem;
  color: #fff;
  letter-spacing: -.02em;
  display: inline-block;
  margin-bottom: 8px;
}
.footer-dot { color: var(--color-primary); }
.footer-tagline {
  font-style: italic;
  margin: 0;
  color: rgba(255,255,255,.6);
}
.footer-links {
  display: flex; flex-direction: column; gap: 10px;
  text-align: right;
}
.footer-links a { color: rgba(255,255,255,.85); }
.footer-copy {
  grid-column: 1 / -1;
  margin: 40px 0 0;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.08);
  font-size: .875rem;
  color: rgba(255,255,255,.5);
  text-align: center;
}
@media (max-width: 768px) {
  .footer-inner { grid-template-columns: 1fr; }
  .footer-links { text-align: left; }
}