:root {
  --blue: #00658d;
  --blue-light: #3fb2e0;
  --orange: #f47b2a;
  --orange-dark: #d9651a;
  --ink: #e8f0f4;
  --muted: #9bb0bb;
  --bg: #0b141a;
  --bg-soft: #101c24;
  --card: #15232d;
  --line: #243642;
  --radius: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--blue-light); }
.container { width: min(1120px, 100% - 40px); margin-inline: auto; }

/* Header */
header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(11,20,26,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: inline-block; text-decoration: none; font-weight: 700; font-size: 1.6rem; color: #fff; letter-spacing: -.02em; }
.logo span { color: var(--orange); }
nav ul { display: flex; gap: 28px; list-style: none; }
nav a { text-decoration: none; color: var(--ink); font-weight: 500; }
nav a:hover { color: var(--orange); }
.menu-btn { display: none; background: none; border: 0; font-size: 1.6rem; color: var(--blue-light); cursor: pointer; }

/* Buttons */
.btn {
  display: inline-block; padding: 12px 26px; border-radius: 999px;
  background: var(--orange); color: #fff; font-weight: 600; text-decoration: none;
  border: 0; cursor: pointer; font-size: 1rem; transition: background .15s, transform .15s;
}
.btn:hover { background: var(--orange-dark); transform: translateY(-1px); }

/* Hero */
.hero {
  background: radial-gradient(ellipse at top, #0a4a66 0%, var(--bg) 70%);
  color: #fff; text-align: center; padding: 110px 0 120px;
  border-bottom: 1px solid var(--line);
}
.hero h1 { font-size: clamp(2.4rem, 6vw, 4rem); letter-spacing: -.03em; line-height: 1.1; }
.hero h1 span { color: var(--orange); }
.hero p { margin: 20px auto 36px; font-size: clamp(1.1rem, 2.4vw, 1.5rem); max-width: 560px; opacity: .92; }

/* Sections */
section { padding: 80px 0; }
section.soft { background: var(--bg-soft); }
.section-head { text-align: center; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(1.8rem, 4vw, 2.4rem); color: #fff; letter-spacing: -.02em; }
.section-head h2::after { content: ""; display: block; width: 48px; height: 4px; border-radius: 2px; background: var(--orange); margin: 12px auto 0; }
.section-head p { color: var(--muted); margin-top: 12px; }

/* Add-in cards */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 28px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.card:hover { border-color: var(--orange); box-shadow: 0 10px 28px rgba(0,0,0,.45); transform: translateY(-3px); }
.video {
  aspect-ratio: 16 / 9; background: linear-gradient(135deg, #0d1a22, #173040);
  display: grid; place-items: center; color: var(--blue-light); position: relative;
}
.video iframe, .video video { width: 100%; height: 100%; border: 0; }
.play {
  width: 64px; height: 64px; border-radius: 50%; background: var(--orange);
  display: grid; place-items: center; box-shadow: 0 4px 14px rgba(244,123,42,.45);
}
.play::before { content: ""; border-left: 20px solid #fff; border-top: 12px solid transparent; border-bottom: 12px solid transparent; margin-left: 5px; }
.video small { position: absolute; bottom: 10px; font-size: .8rem; color: var(--muted); }
.card-body { padding: 24px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.card-top { display: flex; align-items: center; gap: 14px; }
.icon {
  width: 56px; height: 56px; flex: none; border-radius: 12px;
  border: 2px dashed var(--blue-light); color: var(--blue-light);
  display: grid; place-items: center; font-size: .65rem; text-align: center; line-height: 1.1;
}
img.icon { border: 0; object-fit: contain; }
.btn.disabled { background: var(--line); color: var(--muted); cursor: default; }
.btn.disabled:hover { background: var(--line); transform: none; }
.card h3 { font-size: 1.25rem; color: #fff; }
.card p { color: var(--muted); flex: 1; }
.badge { display: inline-block; align-self: flex-start; font-size: .75rem; font-weight: 600; padding: 3px 10px; border-radius: 999px; background: rgba(63,178,224,.15); color: var(--blue-light); }
.card-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 8px; padding-top: 16px; border-top: 1px solid var(--line); }
.price { font-size: 1.4rem; font-weight: 700; color: #fff; }
.price small { font-size: .8rem; font-weight: 400; color: var(--muted); }

/* About + contact */
.about { max-width: 720px; margin: 0 auto; text-align: center; color: var(--muted); font-size: 1.1rem; }
.contact { text-align: center; }
.form { max-width: 560px; margin: 0 auto; text-align: left; display: flex; flex-direction: column; gap: 18px; }
.form label { display: flex; flex-direction: column; gap: 6px; font-weight: 500; color: var(--ink); }
.form input, .form textarea {
  font: inherit; color: var(--ink); background: var(--card);
  border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px;
}
.form textarea { resize: vertical; }
.form input:focus, .form textarea:focus { outline: 2px solid var(--orange); border-color: var(--orange); }
.form .btn { align-self: flex-start; }
.form .hp { position: absolute; left: -9999px; }
#form-status { min-height: 1.5em; color: var(--muted); }
#form-status.ok { color: #6fd08c; }
#form-status.err { color: #ff8a80; }

footer { background: #070d11; color: var(--muted); padding: 28px 0; text-align: center; font-size: .9rem; border-top: 1px solid var(--line); }

@media (max-width: 720px) {
  .menu-btn { display: block; }
  nav ul {
    display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
  }
  nav ul.open { display: flex; }
  nav li a { display: block; padding: 14px 20px; }
  .grid { grid-template-columns: 1fr; }
  section { padding: 56px 0; }
  .hero { padding: 80px 0; }
}