:root {
  --red: #E30613;
  --blue: #0E58BB;
  --ink: #1c1c1c;
  --ink-light: #55606b;
  --bg: #ffffff;
  --bg-alt: #f5f7fa;
  --border: #e4e8ec;
  --radius: 10px;
  --max-width: 960px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header / nav */
header.site-header {
  border-bottom: 1px solid var(--border);
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  padding-bottom: 10px;
}

.site-header .logo img {
  height: 96px;
  width: auto;
}

@media (max-width: 640px) {
  .site-header .logo img {
    height: 72px;
  }
}

nav.main-nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
  margin: 0;
  padding: 0;
}

nav.main-nav a {
  color: var(--ink);
  font-weight: 500;
  font-size: 15px;
}

nav.main-nav a.active {
  color: var(--blue);
}

nav.main-nav a:hover {
  color: var(--blue);
  text-decoration: none;
}

/* Hamburger for mobile */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
  color: var(--ink);
}

@media (max-width: 640px) {
  .nav-toggle { display: block; }
  nav.main-nav {
    display: none;
    width: 100%;
  }
  nav.main-nav.open { display: block; }
  nav.main-nav ul {
    flex-direction: column;
    gap: 0;
    border-top: 1px solid var(--border);
  }
  nav.main-nav a {
    display: block;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
  }
  .site-header .wrap {
    flex-wrap: wrap;
  }
}

/* Hero */
.hero {
  text-align: center;
  padding: 44px 20px 30px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: 28px;
  margin: 0 0 10px;
  font-weight: 600;
}

.hero p {
  max-width: 520px;
  margin: 0 auto;
  color: var(--ink-light);
  font-size: 15px;
}

/* Before / after gallery */
.gallery {
  padding: 30px 0 6px;
}

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

@media (max-width: 640px) {
  .gallery-grid { grid-template-columns: 1fr; }
}

.gallery-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-alt);
}

.gallery-item img {
  width: 100%;
  height: auto;
  display: block;
}

.gallery-item .caption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--ink-light);
  text-align: center;
}

/* Main content sections */
main { padding: 36px 0 60px; }

section { margin-bottom: 36px; }

h2 {
  font-size: 19px;
  font-weight: 600;
  margin: 0 0 12px;
}

p.lead {
  color: var(--ink-light);
  font-size: 14.5px;
}

.benefit-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.benefit {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.benefit .icon {
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  margin-top: 2px;
  color: var(--blue);
}

.benefit .icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.benefit strong {
  color: var(--ink);
}

.benefit span {
  color: var(--ink-light);
  font-size: 14.5px;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 24px;
}

@media (max-width: 560px) {
  .two-col { grid-template-columns: 1fr; }
}

.plain-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.plain-list li {
  font-size: 14.5px;
  color: var(--ink-light);
  padding: 4px 0;
}

.plain-list li::before {
  content: "\2022";
  color: var(--red);
  font-weight: 700;
  display: inline-block;
  width: 1em;
}

ul.applications {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

ul.applications li {
  font-size: 14.5px;
  color: var(--ink-light);
  padding-left: 1.1em;
  position: relative;
}

ul.applications li::before {
  content: "\2022";
  color: var(--red);
  font-weight: 700;
  position: absolute;
  left: 0;
}

/* Video grid */
.video-intro {
  text-align: center;
  padding: 30px 20px 6px;
}

.video-intro h1 {
  font-size: 24px;
  margin: 0 0 6px;
  font-weight: 600;
}

.video-intro p {
  color: var(--ink-light);
  font-size: 14.5px;
  margin: 0;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding: 26px 0 50px;
}

@media (max-width: 720px) {
  .video-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
}

.video-card {
  position: relative;
  width: 100%;
  aspect-ratio: 9 / 16;
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
}

.video-card iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Contact page */
.contact-wrap {
  max-width: 560px;
  margin: 0 auto;
  padding: 50px 20px 70px;
  text-align: center;
}

.contact-wrap h1 {
  font-size: 26px;
  margin: 0 0 14px;
  font-weight: 600;
}

.contact-wrap p.intro {
  color: var(--ink-light);
  font-size: 15px;
  margin: 0 0 34px;
}

.contact-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-alt);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.contact-row {
  display: flex;
  align-items: center;
  gap: 14px;
  justify-content: center;
}

.contact-row .icon {
  width: 24px;
  height: 24px;
  color: var(--blue);
  flex: 0 0 auto;
}

.contact-row .icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.contact-row a, .contact-row span {
  font-size: 16px;
  color: var(--ink);
}

.contact-row a:hover { color: var(--blue); }

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 22px 0;
  text-align: center;
  color: var(--ink-light);
  font-size: 13px;
}