/* ADD VLAN IT Services — оформление в цветах логотипа: тёмно-синий, синий, голубой на светлом фоне.
   Без внешних шрифтов, скриптов и запросов к сторонним адресам. */
:root {
  --navy-900: #072f5b;
  --navy-800: #083868;
  --blue-700: #0b4f8f;
  --blue-600: #1868a8;
  --blue-500: #1f7fc4;
  --cyan-500: #14a9e6;
  --cyan-400: #08c8f8;
  --cyan-100: #e3f6fd;
  --ink: #0e2238;
  --slate-600: #485868;
  --slate-500: #637489;
  --line: #dfe8f1;
  --bg: #f6f9fc;
  --radius: 18px;
  --shadow: 0 10px 30px rgba(8, 56, 104, .08), 0 2px 6px rgba(8, 56, 104, .05);
  --font: "Montserrat", "Segoe UI", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue-600); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, .btn:focus-visible { outline: 3px solid rgba(20, 169, 230, .5); outline-offset: 3px; border-radius: 12px; }
.container { width: min(1120px, 100% - 40px); margin-inline: auto; }

/* ---------- шапка ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255, 255, 255, .88);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand img { width: 34px; height: 40px; object-fit: contain; }
.brand-text { display: block; line-height: 1.05; }
.brand-name {
  display: block; font-weight: 800; font-size: 21px; letter-spacing: .015em;
  background: linear-gradient(90deg, var(--blue-600), var(--navy-800));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.brand-sub { display: block; font-size: 9.5px; font-weight: 700; letter-spacing: .26em; color: var(--slate-600); margin-top: 3px; }
.nav { display: flex; gap: 26px; align-items: center; }
.nav a:not(.btn) { color: var(--slate-600); font-weight: 600; font-size: 15px; }
.nav a:not(.btn):hover { color: var(--blue-600); text-decoration: none; }

/* ---------- кнопки ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px; border-radius: 12px;
  font-weight: 700; font-size: 15px; border: 1px solid transparent; cursor: pointer;
  transition: transform .15s, box-shadow .15s, background .15s, border-color .15s;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: linear-gradient(135deg, var(--blue-600), var(--navy-800)); color: #fff; box-shadow: 0 8px 20px rgba(8, 72, 120, .25); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 12px 26px rgba(8, 72, 120, .3); }
.btn-ghost { background: #fff; color: var(--blue-700); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--cyan-500); }
.btn-light { background: #fff; color: var(--navy-800); box-shadow: 0 10px 24px rgba(0, 0, 0, .18); }
.btn-light:hover { transform: translateY(-1px); }

/* ---------- первый экран ---------- */
.hero {
  position: relative; overflow: hidden; padding: 72px 0 84px;
  background:
    radial-gradient(800px 420px at 88% -5%, rgba(8, 200, 248, .20), transparent 62%),
    radial-gradient(700px 380px at -5% 0%, rgba(24, 104, 168, .12), transparent 58%),
    linear-gradient(#f6f9fc, #fff);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .55;
  background-image: radial-gradient(rgba(8, 72, 120, .12) 1px, transparent 1.3px);
  background-size: 22px 22px;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 45%, #000 75%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 45%, #000 75%, transparent);
}
.hero-grid { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.eyebrow {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--blue-600); background: var(--cyan-100); padding: 7px 14px; border-radius: 999px; margin-bottom: 20px;
}
h1 { font-size: clamp(32px, 4.4vw, 52px); line-height: 1.1; letter-spacing: -.02em; margin: 0 0 18px; color: var(--navy-900); }
.lead { font-size: 18px; color: var(--slate-600); max-width: 34em; margin: 0 0 28px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 30px; }
.ticks { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.ticks li { display: flex; gap: 10px; align-items: flex-start; color: var(--slate-600); font-weight: 500; }
.ticks svg { flex: none; width: 20px; height: 20px; color: var(--cyan-500); margin-top: 3px; }
.logo-card {
  position: relative; display: grid; place-items: center; padding: 44px 36px;
  background: linear-gradient(160deg, #fff, #f1f7fc);
  border: 1px solid var(--line); border-radius: 28px; box-shadow: var(--shadow);
}
.logo-card::after {
  content: ""; position: absolute; inset: -1px; border-radius: 28px; pointer-events: none;
  background: radial-gradient(260px 180px at 82% 0%, rgba(8, 200, 248, .16), transparent 70%);
}
.logo-card img { width: min(340px, 100%); position: relative; z-index: 1; }

/* ---------- секции ---------- */
section { padding: 72px 0; }
.section-head { max-width: 660px; margin: 0 0 40px; }
.section-head h2 { font-size: clamp(26px, 3vw, 36px); letter-spacing: -.015em; margin: 0 0 10px; color: var(--navy-900); }
.section-head p { margin: 0; color: var(--slate-600); font-size: 17px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px;
  box-shadow: 0 1px 2px rgba(8, 56, 104, .04); transition: box-shadow .2s, transform .2s, border-color .2s;
}
.card:hover { box-shadow: var(--shadow); transform: translateY(-2px); border-color: #cfe3f3; }
.icon {
  width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center; margin-bottom: 16px;
  background: linear-gradient(135deg, var(--cyan-100), #d6ecfa); color: var(--blue-700);
}
.icon svg { width: 24px; height: 24px; }
.card h3 { margin: 0 0 8px; font-size: 18px; color: var(--navy-800); }
.card p { margin: 0; color: var(--slate-600); font-size: 15px; }
.alt { background: #fff; border-block: 1px solid var(--line); }
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; list-style: none; margin: 0; padding: 0; }
.steps li { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 22px; }
.steps li::before {
  counter-increment: step; content: "0" counter(step); display: block; margin-bottom: 12px;
  font-weight: 800; font-size: 32px; line-height: 1; color: transparent; -webkit-text-stroke: 1.5px var(--cyan-500);
}
.steps h3 { margin: 0 0 6px; font-size: 17px; color: var(--navy-800); }
.steps p { margin: 0; color: var(--slate-600); font-size: 15px; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip { background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 9px 16px; font-weight: 600; font-size: 14px; color: var(--blue-700); }

/* ---------- контакты ---------- */
.contact {
  display: grid; grid-template-columns: 1.2fr .8fr; gap: 32px; align-items: center; padding: 48px; color: #fff;
  border-radius: 28px; box-shadow: 0 20px 50px rgba(8, 56, 104, .22);
  background: radial-gradient(500px 260px at 100% 0%, rgba(8, 200, 248, .35), transparent 70%), linear-gradient(135deg, var(--navy-800), var(--blue-700) 62%, #1b86c9);
}
.contact h2 { margin: 0 0 10px; font-size: clamp(24px, 3vw, 34px); letter-spacing: -.015em; }
.contact p { margin: 0; color: rgba(255, 255, 255, .88); }
.contact-box { display: grid; gap: 14px; justify-items: start; }
.contact .mail { font-weight: 700; font-size: 20px; color: #fff; word-break: break-all; }
.contact small { color: rgba(255, 255, 255, .75); }

/* ---------- подвал ---------- */
.site-footer { border-top: 1px solid var(--line); background: #fff; padding: 28px 0; color: var(--slate-500); font-size: 14px; }
.site-footer .container { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; align-items: center; }
.site-footer .brand img { width: 24px; height: 28px; }
.site-footer .brand-name { font-size: 15px; }
.site-footer .brand-sub { font-size: 8px; }

/* ---------- 404 ---------- */
.notfound { min-height: 62vh; display: grid; place-items: center; text-align: center; padding: 80px 0; background: linear-gradient(#f6f9fc, #fff); }
.notfound .big404 {
  display: inline-block;
  font-size: clamp(76px, 15vw, 150px); font-weight: 800; line-height: 1; letter-spacing: -.03em; margin: 0 0 8px;
  background: linear-gradient(90deg, var(--cyan-500), var(--navy-800)); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.notfound h1 { font-size: clamp(22px, 3vw, 30px); margin-bottom: 10px; }
.notfound p { color: var(--slate-600); margin: 0 0 24px; }

/* ---------- адаптивность ---------- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .logo-card { order: -1; max-width: 460px; width: 100%; margin-inline: auto; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .contact { grid-template-columns: 1fr; padding: 36px; }
}
@media (max-width: 620px) {
  .nav a:not(.btn) { display: none; }
  .cards, .steps { grid-template-columns: 1fr; }
  .hero { padding: 36px 0 52px; }
  section { padding: 52px 0; }
  .logo-card { padding: 30px 24px; }
  .contact { padding: 28px 22px; border-radius: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}