:root {
  --measure-blue: #164f8a;
  --measure-blue-dark: #0e345d;
  --measure-blue-soft: #edf6ff;
  --measure-green: #2c9842;
  --measure-green-soft: #edf8ee;
  --measure-red: #d52b2b;
  --measure-ink: #15202b;
  --measure-muted: #5d6875;
  --measure-line: #d9e2ea;
  --measure-bg: #f6f8fa;
  --measure-white: #fff;
  --measure-radius: 22px;
  --measure-shadow: 0 18px 48px rgba(16, 47, 82, .10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--measure-ink);
  background: var(--measure-white);
  font-family: Arial, "Helvetica Neue", sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: inherit; }
.measure-container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.measure-container--wide { width: min(1420px, calc(100% - 40px)); }

.measure-header {
  position: sticky;
  z-index: 50;
  top: 0;
  color: #fff;
  background: linear-gradient(105deg, #0d2f55, #155b95);
  box-shadow: 0 8px 30px rgba(9, 31, 57, .18);
}
.measure-header__inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 28px;
}
.measure-logo {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  padding: 8px 14px;
  border-radius: 12px;
  background: #fff;
}
.measure-logo span { color: var(--measure-blue-dark); font-size: 24px; font-weight: 900; letter-spacing: .08em; }
.measure-nav { display: flex; align-items: center; gap: 22px; margin-right: auto; }
.measure-nav a { color: #fff; font-size: 15px; font-weight: 700; text-decoration: none; }
.measure-nav a:hover, .measure-nav a:focus-visible { text-decoration: underline; text-underline-offset: 5px; }
.measure-header__contacts { display: flex; align-items: flex-end; flex-direction: column; gap: 4px; }
.measure-phone { white-space: nowrap; color: #fff; font-size: 19px; font-weight: 800; text-decoration: none; }
.measure-messengers { display: flex; gap: 12px; }
.measure-messengers a { color: #d9eeff; font-size: 12px; font-weight: 700; text-decoration: none; }
.measure-messengers a:hover, .measure-messengers a:focus-visible { color: #fff; text-decoration: underline; }

.measure-hero {
  padding: 34px 0 70px;
  background:
    radial-gradient(circle at 92% 8%, rgba(27, 107, 171, .13), transparent 32%),
    linear-gradient(180deg, #f7fbff, #fff);
}
.measure-breadcrumbs { display: flex; gap: 10px; margin-bottom: 26px; color: var(--measure-muted); font-size: 14px; }
.measure-breadcrumbs a { color: var(--measure-blue); font-weight: 700; text-decoration: none; }
.measure-hero__intro { display: grid; align-items: end; grid-template-columns: minmax(0, 1.15fr) minmax(420px, .85fr); gap: 44px; margin-bottom: 36px; }
.measure-eyebrow, .measure-heading > span {
  display: inline-flex;
  margin-bottom: 12px;
  color: var(--measure-blue);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.measure-hero h1 { max-width: 820px; margin: 0 0 18px; font-size: clamp(38px, 5vw, 68px); line-height: 1.02; letter-spacing: -.035em; }
.measure-hero__copy > p { max-width: 780px; margin: 0; color: var(--measure-muted); font-size: 21px; }
.measure-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.measure-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 49px;
  padding: 12px 22px;
  border: 2px solid var(--measure-blue);
  border-radius: 12px;
  color: #fff;
  background: var(--measure-blue);
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.measure-btn:hover, .measure-btn:focus-visible { transform: translateY(-2px); box-shadow: 0 12px 24px rgba(22, 79, 138, .2); }
.measure-btn--ghost { color: var(--measure-blue); background: #fff; }
.measure-btn--ghost-light { border-color: rgba(255,255,255,.65); background: transparent; }
.measure-rule-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.measure-rule-grid div { min-height: 112px; padding: 22px; border: 1px solid #dce8f2; border-radius: 18px; background: rgba(255,255,255,.88); box-shadow: 0 12px 30px rgba(15, 55, 96, .08); }
.measure-rule-grid strong { display: block; margin-bottom: 4px; color: var(--measure-blue); font-size: 28px; line-height: 1.1; }
.measure-rule-grid span { color: var(--measure-muted); font-size: 14px; }
.measure-main-figure { margin: 0; overflow: hidden; border: 1px solid var(--measure-line); border-radius: 26px; background: #fff; box-shadow: var(--measure-shadow); }
.measure-main-figure > img { display: block; width: 100%; aspect-ratio: 2.08/1; object-fit: cover; }
.measure-legend { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; padding: 24px; }
.measure-legend__item { display: flex; align-items: flex-start; gap: 13px; padding: 18px; border-radius: 16px; background: var(--measure-bg); }
.measure-legend__item > b { display: grid; width: 40px; height: 40px; flex: 0 0 40px; place-items: center; border-radius: 50%; color: #fff; background: var(--measure-blue); font-size: 21px; }
.measure-legend__item--b > b { background: var(--measure-red); }
.measure-legend__item--c > b { background: var(--measure-green); }
.measure-legend__item strong, .measure-legend__item span { display: block; }
.measure-legend__item span { margin-top: 3px; color: var(--measure-muted); font-size: 14px; }
.measure-main-figure figcaption { padding: 0 24px 24px; color: var(--measure-muted); font-size: 14px; text-align: center; }

.measure-section { padding: 82px 0; }
.measure-section--soft { background: var(--measure-bg); }
.measure-heading { max-width: 860px; margin-bottom: 34px; }
.measure-heading h2 { margin: 0 0 12px; font-size: clamp(30px, 4vw, 48px); line-height: 1.08; letter-spacing: -.025em; }
.measure-heading p { margin: 0; color: var(--measure-muted); font-size: 19px; }
.measure-formula-line {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  overflow-x: auto;
  padding: 24px 26px;
  border-radius: 18px;
  color: var(--measure-blue-dark);
  background: linear-gradient(100deg, #e9f4ff, #f6fbff);
  font-size: clamp(20px, 3vw, 30px);
  white-space: nowrap;
}
.measure-formula-note { margin: 16px 0 34px; color: var(--measure-muted); text-align: center; }
.measure-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.measure-steps article { padding: 24px; border: 1px solid var(--measure-line); border-radius: 18px; background: #fff; box-shadow: 0 10px 28px rgba(13, 52, 93, .06); }
.measure-steps article > b { display: grid; width: 42px; height: 42px; place-items: center; border-radius: 12px; color: #fff; background: var(--measure-blue); font-size: 20px; }
.measure-steps h3 { margin: 18px 0 8px; font-size: 20px; }
.measure-steps p { margin: 0; color: var(--measure-muted); font-size: 15px; }
.measure-examples { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 16px; }
.measure-examples article { padding: 22px 26px; border-radius: 18px; background: var(--measure-blue-soft); }
.measure-examples span, .measure-examples strong, .measure-examples p { display: block; }
.measure-examples span { margin-bottom: 6px; color: var(--measure-blue); font-size: 13px; font-weight: 800; text-transform: uppercase; }
.measure-examples strong { font-size: 21px; }
.measure-examples p { margin: 5px 0 0; color: var(--measure-muted); }

.measure-length-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.measure-length-grid article { overflow: hidden; padding: 26px; border: 1px solid #cfe1ef; border-radius: var(--measure-radius); background: var(--measure-blue-soft); }
.measure-length-grid__green { border-color: #cce5d1 !important; background: var(--measure-green-soft) !important; }
.measure-length-grid h3 { margin: 0; font-size: 27px; }
.measure-equation { margin: 6px 0 18px; color: var(--measure-blue); font-weight: 800; }
.measure-length-grid__green .measure-equation { color: var(--measure-green); }
.measure-length-grid img { display: block; width: 100%; margin: 0 0 18px; border-radius: 12px; background: #fff; }
.measure-length-grid article > p:last-child { margin: 0; color: var(--measure-muted); }
.measure-cut-banner { display: flex; align-items: center; gap: 20px; margin-top: 20px; padding: 24px 28px; border-radius: var(--measure-radius); color: #fff; background: linear-gradient(105deg, var(--measure-blue-dark), var(--measure-blue)); }
.measure-cut-banner > b { font-size: 42px; }
.measure-cut-banner h3 { margin: 0 0 3px; }
.measure-cut-banner p { margin: 0; color: #e7f2fc; }
.measure-chips { display: flex; flex-wrap: wrap; gap: 12px; }
.measure-chips span { padding: 11px 17px; border: 1px solid #cbd9e5; border-radius: 999px; color: var(--measure-blue-dark); background: #fff; font-weight: 800; }

.measure-check-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.measure-check-grid article { padding: 30px; border: 1px solid #cae2d0; border-radius: var(--measure-radius); background: var(--measure-green-soft); }
.measure-check-grid__warning { border-color: #efd0d0 !important; background: #fff2f2 !important; }
.measure-check-grid h2 { margin: 0 0 18px; font-size: 28px; }
.measure-check-grid ul { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.measure-check-grid li { position: relative; padding-left: 30px; }
.measure-check-grid li::before { position: absolute; top: 0; left: 0; color: var(--measure-green); content: "✓"; font-weight: 900; }
.measure-check-grid__warning li::before { color: var(--measure-red); content: "!"; }
.measure-faq { display: grid; gap: 12px; }
.measure-faq details { border: 1px solid var(--measure-line); border-radius: 16px; background: #fff; }
.measure-faq summary { padding: 20px 24px; cursor: pointer; color: var(--measure-blue-dark); font-size: 18px; font-weight: 800; }
.measure-faq details p { margin: 0; padding: 0 24px 22px; color: var(--measure-muted); }
.measure-cta { padding: 0 0 82px; }
.measure-cta__card { display: flex; align-items: center; justify-content: space-between; gap: 34px; padding: 40px; border-radius: 26px; color: #fff; background: linear-gradient(115deg, #0d3159, #1769a7); box-shadow: var(--measure-shadow); }
.measure-cta h2 { margin: 0 0 8px; font-size: 34px; }
.measure-cta p { max-width: 650px; margin: 0; color: #dcecf8; }
.measure-cta .measure-actions { flex: 0 0 auto; margin: 0; }

.measure-footer { padding: 54px 0 22px; color: #d6e4f0; background: #0b243e; }
.measure-footer__grid { display: grid; grid-template-columns: 1.3fr .8fr 1fr; gap: 44px; }
.measure-footer__brand { display: inline-block; padding: 7px 13px; border-radius: 9px; color: var(--measure-blue-dark); background: #fff; font-size: 21px; letter-spacing: .08em; }
.measure-footer h2 { margin: 0 0 12px; color: #fff; font-size: 16px; }
.measure-footer p { max-width: 380px; }
.measure-footer__grid > div > a { display: block; width: fit-content; margin: 7px 0; color: #d6e4f0; text-decoration: none; }
.measure-footer__grid > div > a:hover { color: #fff; text-decoration: underline; }
.measure-footer__messengers { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 12px; }
.measure-footer__messengers a { color: #8fcaff; font-size: 14px; font-weight: 800; text-decoration: none; }
.measure-footer__bottom { margin-top: 34px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12); color: #8fa7bb; font-size: 13px; }

@media (max-width: 1060px) {
  .measure-nav { display: none; }
  .measure-header__inner { justify-content: space-between; }
  .measure-hero__intro { grid-template-columns: 1fr; }
  .measure-rule-grid { grid-template-columns: repeat(4, 1fr); }
  .measure-rule-grid div { min-height: 0; padding: 18px; }
  .measure-rule-grid strong { font-size: 22px; }
  .measure-steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  body { font-size: 16px; }
  .measure-container, .measure-container--wide { width: min(100% - 24px, 1160px); }
  .measure-header { position: relative; }
  .measure-header__inner { min-height: 68px; gap: 12px; }
  .measure-logo { padding: 6px 10px; }
  .measure-logo span { font-size: 20px; }
  .measure-header__contacts { align-items: flex-end; }
  .measure-phone { font-size: 16px; }
  .measure-messengers { gap: 8px; }
  .measure-messengers a { font-size: 10px; }
  .measure-hero { padding: 22px 0 48px; }
  .measure-hero h1 { font-size: 39px; }
  .measure-hero__copy > p { font-size: 18px; }
  .measure-rule-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .measure-rule-grid div { padding: 15px; }
  .measure-main-figure { border-radius: 18px; }
  .measure-main-figure > img { aspect-ratio: auto; }
  .measure-legend { grid-template-columns: 1fr; padding: 14px; }
  .measure-main-figure figcaption { padding: 0 16px 18px; }
  .measure-section { padding: 56px 0; }
  .measure-heading { margin-bottom: 26px; }
  .measure-heading h2 { font-size: 32px; }
  .measure-heading p { font-size: 17px; }
  .measure-formula-line { justify-content: flex-start; gap: 12px; padding: 20px; font-size: 20px; }
  .measure-steps, .measure-examples, .measure-length-grid, .measure-check-grid { grid-template-columns: 1fr; }
  .measure-length-grid article { padding: 18px; }
  .measure-cut-banner { align-items: flex-start; padding: 22px; }
  .measure-cta__card { align-items: flex-start; flex-direction: column; padding: 28px 22px; }
  .measure-cta .measure-actions { width: 100%; }
  .measure-cta .measure-btn { width: 100%; }
  .measure-footer__grid { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 410px) {
  .measure-header__inner { align-items: flex-start; padding: 10px 0; }
  .measure-messengers { max-width: 170px; flex-wrap: wrap; justify-content: flex-end; }
  .measure-hero h1 { font-size: 34px; }
  .measure-rule-grid { grid-template-columns: 1fr; }
}