/* Публичный промо-landing MAXCITYS (корневой URL, не мини-приложение MAX) */
:root {
  --ink: #0b1f4a;
  --ink-soft: #243a66;
  --muted: #5a6d8c;
  --line: #c9d4e8;
  --paper: #f3f6fb;
  --paper-deep: #e4ebf6;
  --brand: #1e5bb8;
  --brand-deep: #0f3f8a;
  --white: #ffffff;
  --font-display: "Syne", sans-serif;
  --font-body: "Manrope", sans-serif;
  --nav-h: 4.25rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  background: var(--paper);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 100;
  padding: 0.5rem 0.85rem;
  background: var(--ink);
  color: var(--white);
  text-decoration: none;
  border-radius: 0.25rem;
}

.skip-link:focus {
  top: 1rem;
}

/* —— Навигация —— */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: var(--nav-h);
  padding: 0.65rem clamp(1rem, 3vw, 2.5rem);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
}

.site-nav__brand img {
  width: 2.5rem;
  height: auto;
}

.site-nav__links {
  display: none;
  gap: 1.5rem;
  margin-left: auto;
  font-size: 0.95rem;
  font-weight: 600;
}

.site-nav__links a {
  text-decoration: none;
  color: var(--ink-soft);
}

.site-nav__links a:hover,
.site-nav__links a:focus-visible {
  color: var(--brand);
}

.site-nav__cta {
  margin-left: auto;
  padding: 0.55rem 1rem;
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--white);
  background: var(--brand);
  border-radius: 0.35rem;
}

.site-nav__cta:hover,
.site-nav__cta:focus-visible {
  background: var(--brand-deep);
}

@media (min-width: 720px) {
  .site-nav__links {
    display: flex;
  }

  .site-nav__cta {
    margin-left: 0;
  }
}

/* —— Общие экраны —— */
.screen {
  min-height: 100svh;
  display: grid;
  align-items: center;
  padding: clamp(3rem, 8vh, 5.5rem) clamp(1.25rem, 4vw, 3rem);
}

.screen__inner {
  width: min(52rem, 100%);
  margin: 0 auto;
}

.screen__eyebrow {
  margin: 0 0 0.65rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand);
}

.screen__title {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.screen__lead {
  margin: 0 0 2.5rem;
  max-width: 40rem;
  font-size: 1.08rem;
  color: var(--ink-soft);
}

.screen--about {
  background:
    linear-gradient(180deg, #dce6f4 0%, var(--paper) 18%, var(--white) 100%);
}

.screen--features {
  background:
    radial-gradient(ellipse 80% 40% at 100% 0%, rgba(126, 182, 239, 0.28) 0%, transparent 55%),
    linear-gradient(180deg, var(--white) 0%, var(--paper-deep) 100%);
}

/* —— О системе: поток —— */
.about-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.about-flow li {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1rem;
  padding: 1.35rem 0;
  border-top: 1px solid var(--line);
}

.about-flow li:last-child {
  border-bottom: 1px solid var(--line);
}

.about-flow__step {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--brand);
  line-height: 1.4;
}

.about-flow h2 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
}

.about-flow p {
  margin: 0;
  color: var(--muted);
}

/* —— Возможности —— */
.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.feature-list li {
  display: grid;
  gap: 0.35rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--line);
}

.feature-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.feature-list h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
}

.feature-list p {
  margin: 0;
  color: var(--muted);
  max-width: 36rem;
}

@media (min-width: 800px) {
  .feature-list {
    grid-template-columns: 1fr 1fr;
    column-gap: 2.5rem;
  }

  .feature-list li {
    border-top: none;
    border-bottom: 1px solid var(--line);
    padding: 1.4rem 0;
  }

  .feature-list li:nth-child(-n + 2) {
    border-top: 1px solid var(--line);
  }
}

/* —— Footer —— */
.site-footer {
  display: grid;
  gap: 0.85rem;
  justify-items: start;
  padding: 2.5rem clamp(1.25rem, 4vw, 3rem) 2rem;
  background: var(--white);
  border-top: 1px solid var(--line);
}

.site-footer img {
  width: 8.5rem;
}

.site-footer p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

/* —— Motion —— */
.reveal {
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}