:root {
  --navy-950: #04101b;
  --navy-900: #071827;
  --navy-800: #0b263b;
  --blue-700: #007aa8;
  --blue-600: #0094c6;
  --cyan-400: #36c6e7;
  --cyan-300: #72ddf4;
  --ink: #10202d;
  --muted: #647381;
  --line: #dce5eb;
  --soft: #f2f7fa;
  --white: #fff;
  --shadow: 0 24px 70px rgba(6, 28, 43, .13);
  --radius: 24px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }
.container { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 100; padding: 10px 16px; background: #fff; color: #000; border-radius: 8px; }
.skip-link:focus { top: 12px; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: 86px;
  color: #fff;
  background: rgba(4, 16, 27, .5);
  border-bottom: 1px solid rgba(255, 255, 255, .12);
  backdrop-filter: blur(14px);
  transition: background .25s ease, box-shadow .25s ease;
}
.site-header.scrolled { background: rgba(4, 16, 27, .95); box-shadow: 0 8px 30px rgba(0,0,0,.18); }
.nav-wrap { height: 100%; display: flex; align-items: center; gap: 38px; }
.brand { flex: 0 0 auto; padding: 4px 10px; border-radius: 10px; background: rgba(255,255,255,.96); box-shadow: 0 6px 20px rgba(0,0,0,.12); }
.brand-image { width: 188px; height: auto; }
.main-nav { display: flex; align-items: center; justify-content: center; gap: 30px; margin-left: auto; }
.main-nav a { position: relative; padding: 31px 0; color: rgba(255,255,255,.82); font-weight: 600; font-size: .93rem; }
.main-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 22px; height: 2px; background: var(--cyan-400); transition: right .2s; }
.main-nav a:hover, .main-nav a:focus-visible { color: #fff; }
.main-nav a:hover::after, .main-nav a:focus-visible::after { right: 0; }
.header-phone { display: grid; padding-left: 25px; border-left: 1px solid rgba(255,255,255,.22); line-height: 1.25; }
.phone-label { color: var(--cyan-300); font-size: .72rem; text-transform: uppercase; letter-spacing: .12em; }
.header-phone strong { font-size: .95rem; }
.menu-toggle { display: none; border: 0; background: transparent; padding: 10px; margin-left: auto; }
.menu-toggle span { display: block; width: 25px; height: 2px; margin: 5px; background: #fff; transition: transform .2s, opacity .2s; }

.hero {
  position: relative;
  min-height: 790px;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: #fff;
  background: linear-gradient(112deg, rgba(4,16,27,.99) 0%, rgba(5,28,45,.96) 48%, rgba(4,26,41,.63) 100%), url("hero.webp") center/cover no-repeat;
}
.hero-art { position: absolute; inset: 0; background: radial-gradient(circle at 78% 45%, rgba(0, 174, 219, .24), transparent 30%), linear-gradient(90deg, transparent 65%, rgba(4,16,27,.22)); }
.hero-grid { position: absolute; inset: 0; opacity: .15; background-image: linear-gradient(rgba(255,255,255,.09) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.09) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(90deg, #000, transparent 64%); }
.hero-content { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(330px, .62fr); gap: 82px; align-items: center; padding-top: 122px; padding-bottom: 84px; }
.hero-copy { max-width: 730px; }
.eyebrow { margin: 0 0 18px; display: flex; align-items: center; gap: 12px; color: var(--cyan-300); text-transform: uppercase; letter-spacing: .13em; font-size: .78rem; font-weight: 800; }
.eyebrow span { width: 34px; height: 2px; background: currentColor; }
.eyebrow.dark { color: var(--blue-700); }
.hero h1 { max-width: 740px; margin: 0; font-size: clamp(3.25rem, 6vw, 5.65rem); line-height: .98; letter-spacing: -.055em; font-weight: 750; text-wrap: balance; }
.hero-lead { max-width: 660px; margin: 28px 0 0; color: rgba(255,255,255,.77); font-size: 1.16rem; line-height: 1.65; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.button { min-height: 54px; display: inline-flex; align-items: center; justify-content: center; gap: 12px; padding: 0 24px; border-radius: 10px; font-weight: 750; transition: transform .2s, box-shadow .2s, background .2s, border-color .2s; }
.button:hover { transform: translateY(-2px); }
.button:focus-visible, a:focus-visible, button:focus-visible { outline: 3px solid var(--cyan-300); outline-offset: 3px; }
.button svg { width: 21px; fill: none; stroke: currentColor; stroke-width: 2; }
.button-primary { color: #042234; background: var(--cyan-400); box-shadow: 0 13px 30px rgba(34, 190, 224, .22); }
.button-primary:hover { background: #69daf0; box-shadow: 0 16px 36px rgba(34, 190, 224, .3); }
.button-ghost { color: #fff; border: 1px solid rgba(255,255,255,.32); background: rgba(255,255,255,.045); }
.button-ghost:hover { border-color: rgba(255,255,255,.65); background: rgba(255,255,255,.09); }
.hero-points { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 38px; color: rgba(255,255,255,.66); font-size: .86rem; }
.hero-points span { display: flex; align-items: center; gap: 9px; }
.hero-points span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan-400); box-shadow: 0 0 0 5px rgba(54,198,231,.12); }

.hero-panel { align-self: end; margin-bottom: 26px; padding: 28px; border: 1px solid rgba(255,255,255,.17); border-radius: 20px; background: rgba(5, 24, 38, .73); backdrop-filter: blur(18px); box-shadow: 0 30px 80px rgba(0,0,0,.26); }
.panel-status { display: flex; align-items: center; gap: 8px; color: var(--cyan-300); text-transform: uppercase; letter-spacing: .12em; font-size: .7rem; font-weight: 800; }
.panel-status span { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan-400); box-shadow: 0 0 0 6px rgba(54,198,231,.11); }
.panel-title { margin: 18px 0 24px; font-size: 1.55rem; line-height: 1.25; font-weight: 750; }
.panel-list { display: grid; gap: 0; }
.panel-list > div { display: grid; grid-template-columns: 32px 1fr; gap: 14px; padding: 15px 0; border-top: 1px solid rgba(255,255,255,.12); }
.panel-list > div > span { color: var(--cyan-300); font-family: ui-monospace, monospace; font-size: .75rem; padding-top: 2px; }
.panel-list p { margin: 0; line-height: 1.35; }
.panel-list strong { display: block; font-size: .94rem; }
.panel-list small { display: block; margin-top: 4px; color: rgba(255,255,255,.58); font-size: .79rem; }
.scroll-hint { position: absolute; z-index: 3; left: 50%; bottom: 22px; width: 26px; height: 42px; border: 1px solid rgba(255,255,255,.35); border-radius: 20px; transform: translateX(-50%); }
.scroll-hint span { position: absolute; left: 50%; top: 9px; width: 4px; height: 8px; border-radius: 4px; background: var(--cyan-300); transform: translateX(-50%); animation: scroll 1.8s infinite; }
@keyframes scroll { 0% { opacity: 0; transform: translate(-50%,0); } 35% { opacity: 1; } 100% { opacity: 0; transform: translate(-50%,14px); } }

.trust-strip { position: relative; z-index: 3; margin-top: -1px; color: #fff; background: var(--blue-700); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-grid div { padding: 23px 28px; border-right: 1px solid rgba(255,255,255,.16); }
.trust-grid div:first-child { border-left: 1px solid rgba(255,255,255,.16); }
.trust-grid strong { display: block; font-size: 1rem; }
.trust-grid span { color: rgba(255,255,255,.72); font-size: .78rem; }

.section { padding: 112px 0; }
.section-heading { display: grid; grid-template-columns: 1fr 470px; gap: 80px; align-items: end; margin-bottom: 52px; }
.section-heading h2, .solutions h2, .contact-card h2 { margin: 0; font-size: clamp(2.25rem, 4vw, 3.7rem); line-height: 1.06; letter-spacing: -.04em; text-wrap: balance; }
.section-heading > p { margin: 0 0 7px; color: var(--muted); font-size: 1.04rem; }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.service-card { position: relative; min-height: 330px; padding: 31px; overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: #fff; transition: transform .25s, box-shadow .25s, border-color .25s; }
.service-card::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 4px; background: var(--blue-600); transition: right .28s; }
.service-card:hover { transform: translateY(-6px); border-color: #b8d2de; box-shadow: var(--shadow); }
.service-card:hover::after { right: 0; }
.service-icon { width: 54px; height: 54px; display: grid; place-items: center; margin-bottom: 34px; border-radius: 15px; color: var(--blue-700); background: #e9f7fb; }
.service-icon svg { width: 28px; height: 28px; fill: none; stroke: currentColor; stroke-width: 1.65; stroke-linecap: round; stroke-linejoin: round; }
.service-num { position: absolute; right: 27px; top: 27px; color: #aebdc6; font-family: ui-monospace, monospace; font-size: .75rem; }
.service-card h3 { margin: 0 0 13px; font-size: 1.3rem; line-height: 1.25; }
.service-card p { margin: 0; color: var(--muted); font-size: .93rem; }
.service-card ul { display: flex; flex-wrap: wrap; gap: 7px; margin: 22px 0 0; padding: 0; list-style: none; }
.service-card li { padding: 5px 9px; border-radius: 6px; color: #32718a; background: #eef8fb; font-size: .73rem; font-weight: 650; }
.service-card.featured { color: #fff; background: var(--navy-800); border-color: var(--navy-800); }
.service-card.featured .service-icon { color: var(--cyan-300); background: rgba(76,207,234,.12); }
.service-card.featured p { color: rgba(255,255,255,.66); }
.service-card.featured .service-num { color: rgba(255,255,255,.4); }
.service-card.featured li { color: var(--cyan-300); background: rgba(76,207,234,.1); }

.solutions { position: relative; overflow: hidden; color: #fff; background: var(--navy-900); }
.solutions::before { content: ""; position: absolute; inset: 0; opacity: .1; background-image: linear-gradient(rgba(255,255,255,.12) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.12) 1px, transparent 1px); background-size: 68px 68px; mask-image: radial-gradient(circle at 20% 50%, #000, transparent 54%); }
.solutions-layout { position: relative; display: grid; grid-template-columns: .9fr 1.1fr; gap: 110px; align-items: center; }
.solutions-copy > p:not(.eyebrow) { max-width: 560px; margin: 28px 0; color: rgba(255,255,255,.65); font-size: 1.05rem; }
.text-link { display: inline-flex; align-items: center; gap: 12px; color: var(--cyan-300); font-weight: 750; }
.text-link span { font-size: 1.4rem; transition: transform .2s; }
.text-link:hover span { transform: translateX(4px); }
.solution-stack { display: grid; gap: 12px; }
.solution-stack article { position: relative; padding: 27px 30px 27px 112px; border: 1px solid rgba(255,255,255,.12); border-radius: 15px; background: rgba(255,255,255,.045); transition: border-color .2s, background .2s; }
.solution-stack article:hover { border-color: rgba(114,221,244,.45); background: rgba(255,255,255,.075); }
.solution-stack article > span { position: absolute; left: 25px; top: 29px; width: 62px; color: var(--cyan-300); font-size: .69rem; text-transform: uppercase; letter-spacing: .08em; }
.solution-stack h3 { margin: 0 0 7px; font-size: 1.15rem; }
.solution-stack p { margin: 0; color: rgba(255,255,255,.59); font-size: .9rem; }

.approach { background: var(--soft); }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin: 0; padding: 0; list-style: none; counter-reset: none; }
.steps li { position: relative; min-height: 228px; padding: 30px 32px; border: 1px solid var(--line); border-right: 0; background: #fff; }
.steps li:first-child { border-radius: 16px 0 0 16px; }
.steps li:last-child { border-right: 1px solid var(--line); border-radius: 0 16px 16px 0; }
.steps li:not(:last-child)::after { content: "→"; position: absolute; z-index: 2; right: -17px; top: 31px; width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; color: var(--blue-700); background: #fff; }
.steps span { color: var(--blue-700); font-family: ui-monospace, monospace; font-size: .78rem; font-weight: 750; }
.steps h3 { margin: 33px 0 10px; font-size: 1.25rem; }
.steps p { margin: 0; color: var(--muted); font-size: .9rem; }

.cta-section { padding: 90px 0; }
.contact-card { position: relative; display: grid; grid-template-columns: 1.2fr .8fr; gap: 76px; padding: 66px; overflow: hidden; border-radius: var(--radius); color: #fff; background: linear-gradient(120deg, #007fae, #005c82); box-shadow: var(--shadow); }
.contact-card::after { content: ""; position: absolute; right: -120px; top: -160px; width: 430px; height: 430px; border: 1px solid rgba(255,255,255,.13); border-radius: 50%; box-shadow: 0 0 0 50px rgba(255,255,255,.035), 0 0 0 100px rgba(255,255,255,.025); }
.contact-copy { position: relative; z-index: 1; }
.contact-copy > p:not(.eyebrow) { max-width: 620px; margin: 22px 0 0; color: rgba(255,255,255,.75); }
.contact-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button-white { color: #075675; background: #fff; }
.button-outline { color: #fff; border: 1px solid rgba(255,255,255,.5); }
.contact-list { position: relative; z-index: 1; display: grid; align-content: center; }
.contact-list a, .contact-list div { padding: 15px 0; border-bottom: 1px solid rgba(255,255,255,.18); }
.contact-list a:last-child, .contact-list div:last-child { border-bottom: 0; }
.contact-list span { display: block; color: rgba(255,255,255,.58); font-size: .75rem; text-transform: uppercase; letter-spacing: .08em; }
.contact-list strong { display: block; margin-top: 4px; font-size: 1rem; }
.contact-list a:hover strong { color: var(--cyan-300); }

.site-footer { padding: 50px 0 34px; color: rgba(255,255,255,.6); background: var(--navy-950); }
.footer-grid { display: grid; grid-template-columns: 1.2fr .7fr .7fr; gap: 70px; align-items: end; }
.footer-logo { width: 190px; height: auto; margin-bottom: 18px; }
.site-footer p { margin: 0; max-width: 420px; font-size: .86rem; }
.footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 26px; }
.footer-links a { color: rgba(255,255,255,.74); font-size: .86rem; }
.footer-links a:hover { color: var(--cyan-300); }
.footer-meta { text-align: right; }
.footer-meta p + p { margin-top: 8px; color: var(--cyan-300); }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 1020px) {
  .main-nav { gap: 20px; }
  .header-phone { display: none; }
  .hero-content { grid-template-columns: 1fr .58fr; gap: 38px; }
  .hero h1 { font-size: clamp(3rem, 7vw, 4.8rem); }
  .section-heading { grid-template-columns: 1fr 390px; gap: 40px; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .solutions-layout { gap: 55px; }
  .contact-card { gap: 40px; padding: 50px; }
}

@media (max-width: 780px) {
  .container { width: min(100% - 30px, 680px); }
  .site-header { height: 74px; }
  .brand-image { width: 160px; }
  .menu-toggle { display: block; z-index: 3; }
  .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .main-nav { position: fixed; inset: 0; display: grid; place-content: center; gap: 2px; background: rgba(4,16,27,.98); transform: translateX(100%); transition: transform .25s ease; }
  .main-nav.open { transform: none; }
  .main-nav a { padding: 14px 32px; text-align: center; font-size: 1.35rem; }
  .main-nav a::after { display: none; }
  .hero { min-height: auto; }
  .hero-content { grid-template-columns: 1fr; padding-top: 145px; padding-bottom: 110px; }
  .hero-copy { max-width: 650px; }
  .hero h1 { font-size: clamp(3rem, 13vw, 4.6rem); }
  .hero-panel { max-width: 540px; margin: 4px 0 0; }
  .hero-grid { mask-image: linear-gradient(#000, transparent 75%); }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-grid div { border-bottom: 1px solid rgba(255,255,255,.16); }
  .section { padding: 86px 0; }
  .section-heading { grid-template-columns: 1fr; gap: 20px; margin-bottom: 38px; }
  .solutions-layout { grid-template-columns: 1fr; gap: 45px; }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .steps li, .steps li:first-child, .steps li:last-child { min-height: 205px; border: 1px solid var(--line); border-radius: 14px; }
  .steps li:not(:last-child)::after { display: none; }
  .contact-card { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-meta { grid-column: 1 / -1; display: flex; justify-content: space-between; text-align: left; padding-top: 25px; border-top: 1px solid rgba(255,255,255,.1); }
}

@media (max-width: 540px) {
  .hero-content { padding-top: 125px; }
  .hero h1 { font-size: clamp(2.75rem, 14vw, 3.55rem); }
  .hero-lead { font-size: 1rem; }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .hero-points { display: grid; gap: 11px; }
  .hero-panel { padding: 23px; }
  .trust-grid { grid-template-columns: 1fr; }
  .trust-grid div, .trust-grid div:first-child { border-left: 1px solid rgba(255,255,255,.16); }
  .section { padding: 72px 0; }
  .section-heading h2, .solutions h2, .contact-card h2 { font-size: 2.35rem; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 0; }
  .solution-stack article { padding: 88px 24px 25px; }
  .solution-stack article > span { left: 24px; top: 24px; width: auto; }
  .steps { grid-template-columns: 1fr; }
  .steps li { min-height: 0; }
  .contact-card { padding: 34px 25px; border-radius: 18px; }
  .contact-list strong { font-size: .92rem; word-break: break-word; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .footer-meta { grid-column: auto; display: grid; gap: 7px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* Единое поведение карточек услуг */
.service-card.featured {
    color: var(--ink);
    background: #fff;
    border-color: var(--line);
}

.service-card.featured .service-icon {
    color: var(--blue-700);
    background: #e9f7fb;
}

.service-card.featured p {
    color: var(--muted);
}

.service-card.featured .service-num {
    color: #aebdc6;
}

.service-card.featured li {
    color: #32718a;
    background: #eef8fb;
}

@media (hover: hover) {
    .service-card:hover {
        color: #fff;
        background: var(--navy-800);
        border-color: var(--navy-800);
    }

    .service-card:hover .service-icon {
        color: var(--cyan-300);
        background: rgba(76, 207, 234, .12);
    }

    .service-card:hover .service-num {
        color: rgba(255, 255, 255, .4);
    }

    .service-card:hover p {
        color: rgba(255, 255, 255, .66);
    }

    .service-card:hover li {
        color: var(--cyan-300);
        background: rgba(76, 207, 234, .1);
    }
}

/* Исправление карточек блока инфраструктуры */
@media (min-width: 541px) {
  .solution-stack article {
    display: grid;
    grid-template-columns: 118px minmax(0, 1fr);
    column-gap: 20px;
    align-items: start;
    padding: 27px 30px;
  }

  .solution-stack article > span {
    position: static;
    grid-column: 1;
    grid-row: 1 / span 2;
    width: auto;
    padding-top: 3px;
  }

  .solution-stack h3,
  .solution-stack p {
    grid-column: 2;
  }
}

/* Прозрачный логотип в шапке */
.brand {
  padding: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}