:root {
  --ink: #14181f;
  --muted: #5a6372;
  --line: #e3e6ec;
  --bg: #ffffff;
  --soft: #f5f7fa;
  --blue: #1f4fd1;
  --blue-dark: #183fa8;
  --green: #dcf8c6;
  --radius: 14px;
}

* { 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;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue); }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 680px; }
.center { text-align: center; }

/* Header */
.top {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.top-row { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; color: var(--ink); text-decoration: none; }
.mark {
  display: grid; place-items: center;
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--blue); color: #fff; font-size: 17px;
}
nav { display: flex; gap: 22px; }
nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
nav a:hover { color: var(--ink); }

/* Hero */
.hero { padding: 96px 0 88px; background: linear-gradient(180deg, #f3f6fd 0%, #ffffff 100%); }
.eyebrow { margin: 0 0 12px; color: var(--blue); font-weight: 600; font-size: 14px; letter-spacing: 0.06em; text-transform: uppercase; }
h1 { margin: 0 0 20px; font-size: clamp(34px, 6vw, 54px); line-height: 1.12; letter-spacing: -0.02em; max-width: 760px; }
.lead { margin: 0 0 32px; font-size: 19px; color: var(--muted); max-width: 640px; }

.button {
  display: inline-block; padding: 13px 24px; border-radius: 10px;
  background: var(--blue); color: #fff; text-decoration: none; font-weight: 600;
}
.button:hover { background: var(--blue-dark); }
.button.big { font-size: 22px; padding: 16px 32px; margin-top: 8px; }

/* Sections */
.section { padding: 80px 0; }
.section.alt { background: var(--soft); }
h2 { margin: 0 0 28px; font-size: 32px; letter-spacing: -0.01em; }
h3 { margin: 28px 0 6px; font-size: 18px; }
.card h3 { margin-top: 0; }
p { margin: 0 0 14px; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; background: #fff; }
.card p { color: var(--muted); margin: 0; }

/* Example */
.example { display: grid; grid-template-columns: 1fr 360px; gap: 56px; align-items: center; }
.example h2 { margin-bottom: 18px; }
.example p { color: var(--muted); }
.note { font-size: 15px; border-left: 3px solid var(--line); padding-left: 12px; }

.phone {
  position: relative; margin: 0;
  background: #e9e4dc; border-radius: 26px; padding: 40px 18px 22px;
  border: 8px solid #1c1f26;
}
.tag {
  position: absolute; top: 12px; left: 50%; transform: translateX(-50%);
  background: #1c1f26; color: #fff; font-size: 12px; font-weight: 600;
  padding: 2px 10px; border-radius: 999px; letter-spacing: 0.04em; text-transform: uppercase;
}
.bubble { background: var(--green); border-radius: 12px; padding: 14px 16px; font-size: 15px; box-shadow: 0 1px 1px rgba(0,0,0,0.08); }
.bubble p { margin: 0 0 8px; color: var(--ink); }
.file { display: flex; align-items: center; gap: 10px; background: rgba(255,255,255,0.7); border-radius: 8px; padding: 8px 10px; margin: 6px 0 10px; }
.file-icon { background: #d93a2b; color: #fff; font-size: 11px; font-weight: 700; padding: 4px 6px; border-radius: 4px; }
.stops { margin: 0; padding-left: 20px; color: #3b4250; font-size: 14px; }
.phone figcaption { text-align: center; color: #5a6372; font-size: 13px; margin-top: 12px; }

/* Footer */
.foot { border-top: 1px solid var(--line); padding: 28px 0; color: var(--muted); font-size: 14px; }
.foot p { margin: 0; }

/* Phones and tablets */
@media (max-width: 820px) {
  .cards { grid-template-columns: 1fr; }
  .example { grid-template-columns: 1fr; gap: 32px; }
  .phone { max-width: 360px; width: 100%; margin: 0 auto; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  nav { gap: 14px; }
  nav a { font-size: 14px; }
  .hero { padding: 64px 0 56px; }
  .lead { font-size: 17px; }
  .section { padding: 56px 0; }
  h2 { font-size: 26px; }
}
@media (max-width: 380px) {
  nav a[href="#services"] { display: none; }
}