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

:root {
  --blue:     #0057FF;
  --blue-dk:  #0041CC;
  --black:    #0A0A0A;
  --gray-9:   #111;
  --gray-7:   #444;
  --gray-5:   #777;
  --gray-2:   #E8E8E8;
  --gray-1:   #F5F5F5;
  --white:    #FFFFFF;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;

  --radius:   12px;
  --shadow:   0 2px 16px rgba(0,0,0,.07);
  --shadow-md:0 4px 32px rgba(0,0,0,.10);

  --nav-h:    64px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--black);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 8px;
  font-size: .9375rem;
  font-weight: 550;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background .15s, color .15s, border-color .15s, box-shadow .15s;
  letter-spacing: -.01em;
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
}
.btn-primary:hover { background: var(--blue-dk); }

.btn-outline {
  border-color: var(--gray-2);
  color: var(--black);
}
.btn-outline:hover { border-color: #bbb; background: var(--gray-1); }

.btn-ghost {
  color: var(--gray-7);
}
.btn-ghost:hover { color: var(--black); background: var(--gray-1); }

.btn-lg { padding: 15px 32px; font-size: 1.0625rem; border-radius: 10px; }

/* ── Nav ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-2);
}

.nav-logo {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--black);
  text-decoration: none;
  letter-spacing: -.03em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a {
  color: var(--gray-7);
  text-decoration: none;
  font-size: .9375rem;
  padding: 6px 12px;
  border-radius: 6px;
  transition: color .15s, background .15s;
}
.nav-links a:not(.btn):hover { color: var(--black); background: var(--gray-1); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--black);
  border-radius: 2px;
  transition: transform .2s, opacity .2s;
}

/* ── Hero ── */
.hero {
  position: relative;
  padding: 96px 0 112px;
  overflow: hidden;
}

.hero-eyebrow {
  display: inline-block;
  font-size: .8125rem;
  font-weight: 600;
  color: var(--blue);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.hero-headline {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 750;
  line-height: 1.1;
  letter-spacing: -.04em;
  color: var(--black);
  margin-bottom: 20px;
}

.accent { color: var(--blue); }

.hero-sub {
  font-size: 1.125rem;
  color: var(--gray-7);
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.65;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-bg {
  position: absolute;
  top: -120px;
  right: -160px;
  width: 640px;
  height: 640px;
  background: radial-gradient(circle at 60% 40%, rgba(0,87,255,.08) 0%, transparent 70%);
  pointer-events: none;
}

/* ── Section headings ── */
.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -.03em;
  margin-bottom: 12px;
}
.section-sub {
  font-size: 1.0625rem;
  color: var(--gray-5);
  margin-bottom: 52px;
}

/* ── Services ── */
.services {
  padding: 96px 0;
  background: var(--gray-1);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.card {
  background: var(--white);
  border: 1px solid var(--gray-2);
  border-radius: var(--radius);
  padding: 28px;
  transition: box-shadow .2s, transform .2s;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

.card-icon {
  width: 44px;
  height: 44px;
  background: rgba(0,87,255,.07);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--blue);
}
.card-icon svg { width: 22px; height: 22px; }

.card h3 {
  font-size: 1.0625rem;
  font-weight: 650;
  letter-spacing: -.02em;
  margin-bottom: 10px;
}

.card p {
  font-size: .9375rem;
  color: var(--gray-7);
  line-height: 1.6;
}

/* ── About ── */
.about {
  padding: 96px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-text p {
  font-size: 1rem;
  color: var(--gray-7);
  line-height: 1.7;
  margin-bottom: 16px;
}

.checklist {
  list-style: none;
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.checklist li {
  font-size: .9375rem;
  color: var(--gray-7);
  padding-left: 24px;
  position: relative;
}
.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--blue);
  font-weight: 700;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.stat {
  background: var(--gray-1);
  border: 1px solid var(--gray-2);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-number {
  font-size: 2rem;
  font-weight: 750;
  letter-spacing: -.04em;
  color: var(--black);
}

.stat-label {
  font-size: .8125rem;
  color: var(--gray-5);
  font-weight: 500;
}

/* ── Contact ── */
.contact {
  padding: 96px 0;
  background: var(--black);
  color: var(--white);
  text-align: center;
}

.contact-inner h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 750;
  letter-spacing: -.04em;
  margin-bottom: 16px;
}

.contact-inner p {
  font-size: 1.0625rem;
  color: rgba(255,255,255,.6);
  margin-bottom: 36px;
}

.contact-form {
  width: 100%;
  max-width: 580px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: left;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: .875rem;
  font-weight: 550;
  color: rgba(255,255,255,.7);
}

.form-group input,
.form-group textarea {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 8px;
  padding: 11px 14px;
  font-size: .9375rem;
  font-family: var(--font);
  color: var(--white);
  outline: none;
  transition: border-color .15s, background .15s;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,.3); }

.form-group input:focus,
.form-group textarea:focus {
  border-color: rgba(255,255,255,.4);
  background: rgba(255,255,255,.12);
}

.contact-form .btn-primary {
  align-self: flex-start;
  background: var(--blue);
  font-size: 1rem;
}
.contact-form .btn-primary:hover { background: var(--blue-dk); }

@media (max-width: 540px) {
  .form-row { grid-template-columns: 1fr; }
}

.contact .btn-primary {
  background: var(--blue);
  font-size: 1.0625rem;
}
.contact .btn-primary:hover { background: var(--blue-dk); }

/* ── Support form ── */
.support-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 640px;
}

.support-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.support-form .form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.support-form label {
  font-size: .875rem;
  font-weight: 550;
  color: var(--gray-7);
}

.support-form input,
.support-form textarea {
  background: var(--white);
  border: 1px solid var(--gray-2);
  border-radius: 8px;
  padding: 11px 14px;
  font-size: .9375rem;
  font-family: var(--font);
  color: var(--black);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
  resize: vertical;
}

.support-form input::placeholder,
.support-form textarea::placeholder { color: var(--gray-5); }

.support-form input:focus,
.support-form textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(0,87,255,.1);
}

@media (max-width: 540px) {
  .support-form .form-row { grid-template-columns: 1fr; }
}

/* ── Footer ── */
.footer {
  padding: 24px 0;
  border-top: 1px solid var(--gray-2);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-links {
  display: flex;
  gap: 4px;
}
.footer-links a {
  font-size: .875rem;
  color: var(--gray-5);
  text-decoration: none;
  padding: 4px 10px;
  border-radius: 6px;
  transition: color .15s, background .15s;
}
.footer-links a:hover { color: var(--black); background: var(--gray-1); }

.footer-copy {
  font-size: .875rem;
  color: var(--gray-5);
}

/* ── Mobile nav ── */
@media (max-width: 720px) {
  .nav-toggle { display: flex; }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-2);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    gap: 4px;
    box-shadow: var(--shadow-md);
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; }

  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
}

/* ── Fade-in animation ── */
.fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .5s ease, transform .5s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: none;
}