/* ============ Base ============ */
:root {
  --bg: #000000;
  --bg-alt: #070707;
  --surface: #0c0c0d;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.18);
  --text: #ffffff;
  --text-soft: #d9d9d9;
  --muted: #9a9aa0;
  --accent: #959595;
  --radius: 4px;
  --container: 1200px;
  --header-h: 72px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

::selection { background: rgba(255, 255, 255, 0.2); }

/* ============ Buttons ============ */
.btn {
  display: inline-block;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease, transform 0.15s ease;
  white-space: nowrap;
}

.btn--primary {
  background: #ffffff;
  color: #000000;
}
.btn--primary:hover { background: #d9d9d9; }

.btn--outline {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}
.btn--outline:hover { border-color: #ffffff; background: rgba(255, 255, 255, 0.05); }

.btn:active { transform: translateY(1px); }

/* ============ Header ============ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background-color 0.3s ease;
}
.header.is-scrolled {
  background: rgba(0, 0, 0, 0.82);
  border-bottom-color: var(--line);
}

.header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 40px;
}

.header__logo img { width: 204px; height: auto; }

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: auto;
}

.nav__link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-soft);
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
  position: relative;
}
.nav__link::after {
  content: '';
  position: absolute;
  left: 0; bottom: -6px;
  width: 100%;
  height: 1px;
  background: #ffffff;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.nav__link:hover { color: #ffffff; }
.nav__link:hover::after { transform: scaleX(1); }

.header__cta { padding: 10px 22px; font-size: 14px; }

/* Burger */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 40px;
  height: 40px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
}
.burger span {
  display: block;
  height: 1.5px;
  width: 100%;
  background: #ffffff;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.burger.is-open span:nth-child(1) { transform: translateY(3.75px) rotate(45deg); }
.burger.is-open span:nth-child(2) { transform: translateY(-3.75px) rotate(-45deg); }

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 60px) 0 80px;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__bg canvas { display: block; }

.hero__fade {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.15) 30%, rgba(0,0,0,0.25) 70%, var(--bg) 100%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero__eyebrow {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 28px;
}

.hero__title {
  font-size: clamp(34px, 5.2vw, 56px);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  max-width: 820px;
}

.hero__text {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-soft);
  max-width: 720px;
  margin-bottom: 40px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 56px;
}

.hero__contacts {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 28px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  max-width: 640px;
}

.hero__contacts-label {
  font-size: 14px;
  color: var(--muted);
}

.hero__contact-value {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: color 0.2s ease, opacity 0.2s ease;
}
.hero__contact-value:hover { color: #cfcfdc; }

/* ============ Sections ============ */
.section {
  padding: 110px 0;
  position: relative;
}
.section--alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section__head {
  max-width: 820px;
  margin-bottom: 64px;
}

.section__label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 18px;
}

.section__title {
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.section__intro {
  margin-top: 22px;
  font-size: 16.5px;
  line-height: 1.7;
  color: var(--text-soft);
}

/* ============ About ============ */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.about__lead {
  font-size: 20px;
  line-height: 1.6;
  font-weight: 500;
  margin-bottom: 20px;
}

.about__text {
  color: var(--text-soft);
  font-size: 16px;
  line-height: 1.75;
}
.about__text + .about__text { margin-top: 18px; }

/* ============ Directions ============ */
.directions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.direction {
  display: flex;
  gap: 28px;
  padding: 36px 32px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.3s ease, transform 0.3s ease, background-color 0.3s ease;
}
.direction:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
}

.direction__num {
  font-size: 15px;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--muted);
  padding-top: 6px;
  font-variant-numeric: tabular-nums;
}

.direction__body { flex: 1; min-width: 0; }

.direction__title {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin-bottom: 16px;
}
.direction__subtitle {
  display: block;
  font-size: 15px;
  font-weight: 400;
  color: var(--muted);
  margin-top: 4px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.chip {
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text-soft);
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 5px 13px;
  background: rgba(255, 255, 255, 0.03);
}

.direction__text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-soft);
  margin-bottom: 14px;
}

.list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-soft);
}
.list li + li { margin-top: 9px; }
.list li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 0.62em;
  width: 6px;
  height: 1px;
  background: var(--accent);
}
.list li strong { color: var(--text); font-weight: 600; }

.direction__principle {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}
.direction__principle-label {
  display: block;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.direction__principle p {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--text-soft);
  font-style: italic;
}

/* ============ Services ============ */
.services {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.service {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 44px 40px;
  transition: border-color 0.3s ease;
}
.service:hover { border-color: var(--line-strong); }

.service__head {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  margin-bottom: 36px;
}

.service__num {
  flex-shrink: 0;
  font-size: 40px;
  font-weight: 300;
  line-height: 1;
  color: var(--accent);
  letter-spacing: 0.05em;
  font-family: 'Inter', Arial, sans-serif;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.service__title {
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-bottom: 10px;
}

.service__lead {
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--text-soft);
  max-width: 760px;
}

.service__methods {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.method {
  padding: 22px 20px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.method__name {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}
.method p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

.service__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.service__block-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

/* Steps */
.steps li {
  display: flex;
  gap: 14px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--text-soft);
}
.steps li + li { margin-top: 14px; }
.steps__num {
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  padding-top: 3px;
}
.steps strong { color: var(--text); font-weight: 600; }

/* ============ Approach ============ */
.benefits {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 72px;
}

.benefit {
  padding: 30px 26px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.benefit:hover { border-color: var(--line-strong); transform: translateY(-3px); }

.benefit__icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 20px;
}
.benefit__icon svg { width: 22px; height: 22px; }

.benefit__title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.benefit__text {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--muted);
}

.process {
  border-top: 1px solid var(--line);
  padding-top: 56px;
}

.process__title {
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-bottom: 40px;
}

.process__steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.process__step {
  position: relative;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.process__step::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  width: 36px;
  height: 1px;
  background: #ffffff;
}

.process__num {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  margin-bottom: 10px;
}

.process__step h4 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
}

.process__step p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted);
}

/* ============ Contact ============ */
.contact {
  padding-bottom: 130px;
}

.contact__inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: start;
}

.contact__lead {
  font-size: 16.5px;
  line-height: 1.7;
  color: var(--text-soft);
  margin-top: 22px;
  margin-bottom: 32px;
  max-width: 520px;
}

.contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.contact__card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 32px;
}

.contact__row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  padding: 20px 0;
}
.contact__row + .contact__row { border-top: 1px solid var(--line); }

.contact__row-label {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 2px;
}

.contact__row a,
.contact__row span:last-child {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
}
.contact__row a { transition: color 0.2s ease; }
.contact__row a:hover { color: #cfcfdc; }

/* ============ Footer ============ */
.footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 40px;
  background: var(--bg);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.footer__logo img { width: 180px; height: auto; opacity: 0.95; }

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
}
.footer__nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.2s ease;
}
.footer__nav a:hover { color: #ffffff; }

.footer__meta p {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.6;
}
.footer__meta p + p { margin-top: 4px; }

.footer__copy {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

/* ============ Reveal animation ============ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  .benefits { grid-template-columns: repeat(2, 1fr); }
  .process__steps { grid-template-columns: repeat(3, 1fr); row-gap: 36px; }
  .service__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(0, 0, 0, 0.96);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    padding: 12px 24px 24px;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  }
  .nav.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
  .nav__link { padding: 14px 0; font-size: 16px; width: 100%; border-bottom: 1px solid var(--line); }
  .nav__link::after { display: none; }

  .burger { display: flex; margin-left: auto; }
  .header__cta { display: none; }

  .about__grid { grid-template-columns: 1fr; gap: 8px; }
  .directions { grid-template-columns: 1fr; }
  .service__methods { grid-template-columns: 1fr; }
  .service__grid { grid-template-columns: 1fr; gap: 28px; }
  .service { padding: 32px 24px; }
  .contact__inner { grid-template-columns: 1fr; gap: 40px; }

  .section { padding: 80px 0; }
  .section__head { margin-bottom: 44px; }
}

@media (max-width: 560px) {
  .benefits { grid-template-columns: 1fr; }
  .process__steps { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-top: calc(var(--header-h) + 48px); }
  .hero__contact-value { font-size: 17px; }
  .service__head { flex-direction: column; gap: 16px; }
  .service__num { width: 52px; height: 52px; font-size: 26px; }
  .direction { flex-direction: column; gap: 12px; padding: 28px 22px; }
  .direction__num { padding-top: 0; }
  .contact__row { grid-template-columns: 1fr; gap: 4px; }
  .header__logo img { width: 160px; }
}