:root {
  --bg: #0a0a0a;
  --bg-soft: #141416;
  --bg-card: #17171a;
  --text: #ffffff;
  --muted: #a7a7ad;
  --accent: #22e6ff;
  --accent-dim: rgba(34, 230, 255, 0.12);
  --border: #26262b;
  --radius: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: "Space Grotesk", -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", sans-serif;
}

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 700; font-size: 1.05rem; }
.brand-icon { width: 30px; height: 30px; border-radius: 8px; }
.nav-links { display: flex; gap: 26px; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.nav-links a:hover { color: var(--text); }
.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  padding: 10px; margin-left: 6px;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--text); border-radius: 2px; margin: 5px 0;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block; text-decoration: none; font-weight: 600;
  border-radius: 10px; transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.btn-small { padding: 9px 18px; font-size: 0.9rem; background: var(--accent); color: #04181c; }
.btn-primary { padding: 15px 34px; font-size: 1.05rem; background: var(--accent); color: #04181c; box-shadow: 0 0 32px rgba(34,230,255,0.25); }
.btn-ghost { padding: 15px 34px; font-size: 1.05rem; color: var(--text); border: 1px solid var(--border); background: transparent; }
.btn-large { padding: 18px 44px; font-size: 1.15rem; }
.btn:hover { transform: translateY(-2px); }
.btn-primary:hover { box-shadow: 0 0 44px rgba(34,230,255,0.4); }

/* ---------- hero ---------- */
.hero {
  position: relative; overflow: hidden;
  text-align: center; padding: 84px 24px 64px;
  background: radial-gradient(ellipse 70% 55% at 50% 0%, rgba(34,230,255,0.08), transparent 70%);
}
/* animated dot-matrix field behind the hero logo */
.dot-matrix {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    radial-gradient(circle, rgba(34,230,255,0.22) 1.5px, transparent 1.6px),
    radial-gradient(circle, rgba(34,230,255,0.10) 2.4px, transparent 2.5px);
  background-size: 26px 26px, 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 75% 65% at 50% 22%, #000 25%, transparent 72%);
  mask-image: radial-gradient(ellipse 75% 65% at 50% 22%, #000 25%, transparent 72%);
  animation: dot-drift 30s linear infinite;
}
.hero > :not(.dot-matrix) { position: relative; z-index: 1; }
@keyframes dot-drift {
  to { background-position: 52px 26px, -128px 64px; }
}
@media (prefers-reduced-motion: reduce) {
  .dot-matrix { animation: none; }
}
.hero-logo { width: min(430px, 82vw); height: auto; margin-bottom: 34px; }
.hero h1 { font-size: clamp(2.2rem, 5.4vw, 3.6rem); line-height: 1.12; letter-spacing: -0.02em; margin-bottom: 20px; }
.accent { color: var(--accent); }
.lede { color: var(--muted); font-size: clamp(1.05rem, 2.2vw, 1.3rem); max-width: 640px; margin: 0 auto 34px; }
.hero-ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 18px; }
.hero-note { color: var(--muted); font-size: 0.92rem; }
.hero-link { margin-top: 14px; font-size: 0.98rem; }
.hero-link a { color: var(--accent); text-decoration: none; font-weight: 600; }
.hero-link a:hover { text-decoration: underline; }

/* ---------- hero before/after visual ---------- */
.hero-visual {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  max-width: 880px; margin: 40px auto 0;
}
.hv-item {
  position: relative; border-radius: var(--radius);
  overflow: hidden; border: 1px solid var(--border);
}
.hv-item img { display: block; width: 100%; height: 300px; object-fit: cover; }

/* ---------- stat strip ---------- */
.strip {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  background: var(--bg-soft);
}
.strip-item { padding: 30px 18px; text-align: center; border-left: 1px solid var(--border); }
.strip-item:first-child { border-left: none; }
.strip-item strong { display: block; font-size: 1.9rem; color: var(--accent); letter-spacing: -0.01em; }
.strip-item span { color: var(--muted); font-size: 0.92rem; }

/* ---------- sections ---------- */
section { padding: 88px 24px; max-width: 1060px; margin: 0 auto; }
section h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); letter-spacing: -0.02em; line-height: 1.2; margin-bottom: 22px; text-align: center; }

.problem { text-align: center; }
.problem p { color: var(--muted); max-width: 680px; margin: 0 auto 16px; font-size: 1.08rem; }
.problem strong { color: var(--text); }

/* ---------- how ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 44px; }
.step { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 34px 28px; }
.step-num {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--accent-dim); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.15rem; margin-bottom: 18px;
}
.step h3 { margin-bottom: 10px; font-size: 1.2rem; }
.step p { color: var(--muted); font-size: 0.98rem; }

/* ---------- faq ---------- */
.faq { max-width: 760px; }
.faq details {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; margin-bottom: 12px; overflow: hidden;
}
.faq summary { padding: 20px 24px; cursor: pointer; font-weight: 600; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--accent); font-size: 1.3rem; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { padding: 0 24px 22px; color: var(--muted); }

/* ---------- cta ---------- */
.cta {
  text-align: center; background: var(--bg-soft);
  border: 1px solid var(--border); border-radius: 20px;
  padding: 72px 32px; margin-bottom: 88px;
  background-image: radial-gradient(ellipse 60% 80% at 50% 100%, rgba(34,230,255,0.07), transparent 70%);
}
.cta p { color: var(--muted); max-width: 600px; margin: 0 auto 32px; font-size: 1.08rem; }
.cta-note { margin-top: 18px !important; margin-bottom: 0 !important; font-size: 0.92rem !important; }
.cta-note a { color: var(--accent); text-decoration: none; }
.cta-note a:hover { text-decoration: underline; }

/* ---------- sample form ---------- */
.sample-form { max-width: 640px; margin: 0 auto; text-align: left; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-field { margin-bottom: 16px; }
.form-field label { display: block; font-size: 0.9rem; font-weight: 600; margin-bottom: 6px; }
.form-field .opt { color: var(--muted); font-weight: 400; }
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%; padding: 13px 16px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--bg-card); color: var(--text);
  font-size: 1rem; font-family: inherit; line-height: 1.5;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.form-field select {
  appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2322e6ff' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 16px center;
  padding-right: 40px;
}
.form-field select:invalid { color: var(--muted); }
.form-field select option { background: var(--bg-card); color: var(--text); }
.form-field textarea { resize: vertical; min-height: 76px; }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(34, 230, 255, 0.15);
}
.form-field input::placeholder,
.form-field textarea::placeholder { color: #5b5b62; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form-submit { width: 100%; border: none; cursor: pointer; font-family: inherit; margin-top: 6px; }
.form-submit:disabled { opacity: 0.6; cursor: default; transform: none; }
.form-status { min-height: 1.6em; margin-top: 12px !important; margin-bottom: 0 !important; font-size: 0.95rem !important; text-align: center; }
.form-status.error { color: #ff8a8a; }
.form-success { text-align: center; padding: 28px 12px; }
.form-success-icon {
  width: 60px; height: 60px; border-radius: 50%; margin: 0 auto 18px;
  background: var(--accent-dim); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem; font-weight: 800;
}
.form-success h3 { font-size: 1.4rem; margin-bottom: 10px; }
.form-success p { margin: 0 auto; }

/* ---------- case studies ---------- */
.case-hero { text-align: center; padding: 84px 24px 40px;
  background: radial-gradient(ellipse 70% 55% at 50% 0%, rgba(34,230,255,0.08), transparent 70%); }
.case-hero h1 { font-size: clamp(2.2rem, 5.4vw, 3.6rem); line-height: 1.12; letter-spacing: -0.02em; margin-bottom: 20px; }

.case-study {
  background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: 20px; padding: 56px 44px; margin-bottom: 48px;
}
.case-head { text-align: center; margin-bottom: 40px; }
.case-badge {
  display: inline-block; font-size: 0.8rem; font-weight: 700;
  color: var(--accent); background: var(--accent-dim);
  padding: 5px 16px; border-radius: 20px; margin-bottom: 16px;
}
.case-head h2 { margin-bottom: 10px; }
.case-meta { color: var(--muted); font-size: 1rem; }

.ba-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 40px; }
.ba-item {
  position: relative; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden;
}
.ba-item img { display: block; width: 100%; height: auto; }
.ba-label {
  position: absolute; top: 14px; left: 14px; z-index: 2;
  font-size: 0.78rem; font-weight: 800; letter-spacing: 0.08em;
  padding: 5px 14px; border-radius: 8px;
}
.ba-before { background: rgba(10,10,10,0.8); color: var(--muted); border: 1px solid var(--border); }
.ba-after { background: var(--accent); color: #04181c; }
.ba-item figcaption { padding: 16px 20px; color: var(--muted); font-size: 0.92rem; }

.changes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 40px; }
.change { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 24px; }
.change h3 { color: var(--accent); font-size: 1.05rem; margin-bottom: 12px; }
.change p { color: var(--muted); font-size: 0.94rem; margin-bottom: 12px; }
.change p:last-child { margin-bottom: 0; }
.change strong { color: var(--text); }

.copy-excerpt {
  border-left: 3px solid var(--accent); background: var(--bg-card);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 28px 32px; margin: 0 0 40px;
}
.copy-excerpt p { font-size: 1.12rem; line-height: 1.7; margin-bottom: 12px; }
.copy-excerpt cite { color: var(--muted); font-size: 0.9rem; font-style: normal; }

.case-media { margin-bottom: 36px; }
.case-media video {
  width: 100%; max-height: 520px; border-radius: var(--radius);
  border: 1px solid var(--border); background: #000; margin-bottom: 20px;
}
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.gallery img { width: 100%; height: 220px; object-fit: cover; border-radius: 10px; border: 1px solid var(--border); }

.case-takeaway {
  color: var(--muted); font-size: 1.02rem; max-width: 780px; margin: 0 auto;
  text-align: center;
}
.case-takeaway strong { color: var(--text); }

/* ---------- samples preview ---------- */
.samples { text-align: center; }
.samples-sub { color: var(--muted); max-width: 620px; margin: 0 auto 40px; font-size: 1.08rem; }
.samples-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; text-align: left; }
.sample-card {
  display: block; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  text-decoration: none; color: var(--text);
  transition: transform 0.12s ease, border-color 0.15s ease;
}
.sample-card:hover { transform: translateY(-3px); border-color: var(--accent); }
.sample-imgs { display: grid; grid-template-columns: 1fr 1fr; }
.sample-imgs img { display: block; width: 100%; height: 190px; object-fit: cover; }
.sample-card h3 { padding: 20px 24px 6px; font-size: 1.15rem; }
.sample-card p { padding: 0 24px 24px; color: var(--muted); font-size: 0.95rem; }

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--border); color: var(--muted); font-size: 0.92rem;
  padding: 52px 24px 40px;
}
.footer-inner {
  max-width: 1060px; margin: 0 auto 30px;
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 32px; flex-wrap: wrap;
}
.footer-brand { max-width: 340px; }
.footer-icon { width: 40px; height: 40px; border-radius: 10px; margin-bottom: 14px; }
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; padding-top: 6px; }
.footer-links a { color: var(--muted); text-decoration: none; }
.footer-links a:hover { color: var(--text); }
.social-link { display: inline-flex; align-items: center; gap: 7px; }
.x-icon { width: 15px; height: 15px; fill: currentColor; }
.footer-copy { text-align: center; font-size: 0.85rem; }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .nav { padding: 14px 20px; }
  .nav-links {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: rgba(10, 10, 10, 0.98);
    border-bottom: 1px solid var(--border);
    padding: 8px 24px 18px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; font-size: 1.05rem; border-top: 1px solid var(--border); }
  .nav-links a:first-child { border-top: none; }
  .nav .btn-small { margin-left: auto; }
  .nav-toggle { display: block; }
  .hv-item img { height: 210px; }
  .samples-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; }
  .strip { grid-template-columns: repeat(2, 1fr); }
  .strip-item:nth-child(3) { border-left: none; }
  .strip-item { border-top: 1px solid var(--border); }
  .strip-item:nth-child(-n+2) { border-top: none; }
  .steps { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .ba-grid { grid-template-columns: 1fr; }
  .changes { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; }
  .gallery img { height: auto; }
  .case-study { padding: 36px 22px; }
  section { padding: 64px 20px; }
}