:root {
  --bg: #f8fbf8;
  --bg-soft: #edf7f2;
  --card: #ffffff;
  --text: #13211d;
  --muted: #5a6c65;
  --primary: #0f766e;
  --primary-dark: #0b4f49;
  --accent: #d6a734;
  --accent-soft: #fff3c6;
  --line: rgba(15, 118, 110, .16);
  --shadow: 0 22px 60px rgba(15, 76, 68, .12);
  --radius: 28px;
  --container: 1180px;
  --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(214, 167, 52, .16), transparent 34rem),
    radial-gradient(circle at top right, rgba(15, 118, 110, .14), transparent 30rem),
    var(--bg);
  line-height: 1.55;
  text-rendering: optimizeSpeed;
}
body.nav-open { overflow: hidden; }
img, svg { max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }

.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  transform: translateY(-150%);
  z-index: 200;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 251, 248, .82);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(18px);
  transition: border-color .25s ease, box-shadow .25s ease;
}
.site-header.is-scrolled {
  border-color: var(--line);
  box-shadow: 0 10px 32px rgba(15, 76, 68, .08);
}
.header__inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: -.02em;
}
.logo__mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 14px 30px rgba(15, 118, 110, .22);
}
.logo__text { line-height: 1.05; font-size: 14px; }
.nav { display: flex; align-items: center; gap: 6px; }
.nav a {
  padding: 10px 12px;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 650;
  font-size: 14px;
}
.nav a:hover, .nav a:focus-visible { background: var(--bg-soft); color: var(--primary-dark); }
.header__phone {
  padding: 12px 16px;
  border-radius: 999px;
  color: var(--primary-dark);
  background: var(--card);
  border: 1px solid var(--line);
  font-weight: 800;
  box-shadow: 0 8px 24px rgba(15, 76, 68, .08);
}
.burger {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 14px;
  background: var(--card);
  box-shadow: var(--shadow);
}
.burger span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--primary-dark);
  border-radius: 999px;
}

.section { padding: 92px 0; }
.hero { padding-top: 86px; overflow: hidden; }
.hero__grid, .split {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
}
.split--reverse { grid-template-columns: .9fr 1.1fr; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  color: var(--primary-dark);
  font-weight: 850;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: 12px;
}
.eyebrow::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(214, 167, 52, .18);
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  margin-bottom: 24px;
  font-size: clamp(40px, 7vw, 76px);
  line-height: .96;
  letter-spacing: -.06em;
}
h2 {
  margin-bottom: 18px;
  font-size: clamp(32px, 4.2vw, 54px);
  line-height: 1.03;
  letter-spacing: -.045em;
}
h3 { margin-bottom: 10px; font-size: 21px; line-height: 1.15; letter-spacing: -.02em; }
.hero__lead {
  max-width: 670px;
  margin-bottom: 24px;
  color: var(--muted);
  font-size: 20px;
}
.hero__lead strong { color: var(--primary-dark); white-space: nowrap; }
.hero__list {
  display: grid;
  gap: 10px;
  margin: 0 0 30px;
  padding: 0;
  list-style: none;
}
.hero__list li {
  position: relative;
  padding-left: 34px;
  color: #263b35;
  font-weight: 650;
}
.hero__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .28em;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent-soft);
  border: 1px solid rgba(214, 167, 52, .45);
}
.hero__list li::before {
    content: "";
    left: 0;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--accent-soft);
    border: 1px solid rgba(214, 167, 52, .45);
}

.hero__list li::after {
    content: "✓";
    left: 6px;
    color: var(--primary-dark);
    font-weight: 900;
    font-size: 13px;
}
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 14px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 15px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 850;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 18px 38px rgba(15, 118, 110, .24);
}
.btn--light {
  color: var(--primary-dark);
  background: #fff;
  border-color: var(--line);
  box-shadow: 0 12px 30px rgba(15, 76, 68, .08);
}
.policy { max-width: 520px; margin: 0; color: var(--muted); font-size: 12px; }

.hero__visual {
  position: relative;
  min-height: 570px;
  border-radius: 40px;
  background:
    linear-gradient(135deg, rgba(255,255,255,.84), rgba(237,247,242,.92)),
    repeating-linear-gradient(-45deg, transparent 0 20px, rgba(15, 118, 110, .04) 20px 40px);
  border: 1px solid rgba(255, 255, 255, .72);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.hero__visual::before,
.hero__visual::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  background: rgba(15, 118, 110, .10);
}
.hero__visual::before { width: 260px; height: 260px; right: -80px; top: -80px; }
.hero__visual::after { width: 180px; height: 180px; left: -50px; bottom: -40px; background: rgba(214, 167, 52, .16); }
.hero-card {
  position: absolute;
  z-index: 2;
  padding: 22px;
  border-radius: 24px;
  background: rgba(255, 255, 255, .88);
  border: 1px solid rgba(255, 255, 255, .9);
  box-shadow: 0 18px 40px rgba(15, 76, 68, .12);
  backdrop-filter: blur(14px);
}
.hero-card strong { display: block; color: var(--primary-dark); font-size: 30px; line-height: 1.05; letter-spacing: -.04em; }
.hero-card small, .hero-card__label { color: var(--muted); }
.hero-card--main { left: 32px; top: 34px; max-width: 270px; }
.hero-card--main strong { font-size: 44px; }
.hero-card--mini { right: 32px; top: 260px; max-width: 210px; animation: float 5.6s ease-in-out infinite; }
.hero-card--doc { left: 36px; bottom: 38px; max-width: 240px; animation: float 6.2s ease-in-out infinite reverse; }
.tank {
  position: absolute;
  inset: 150px 58px 74px;
  z-index: 1;
  border-radius: 44px 44px 70px 70px;
  background: linear-gradient(180deg, rgba(15,118,110,.96), rgba(11,79,73,.96));
  box-shadow: inset 0 18px 40px rgba(255,255,255,.16), 0 30px 60px rgba(15, 76, 68, .22);
  animation: tankGlow 4s ease-in-out infinite;
}
.tank::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -48px;
  transform: translateX(-50%);
  width: 160px;
  height: 58px;
  border-radius: 28px 28px 8px 8px;
  background: var(--primary-dark);
}
.tank__drop {
  position: absolute;
  left: 50%;
  top: 42%;
  width: 92px;
  height: 120px;
  transform: translate(-50%, -50%) rotate(45deg);
  border-radius: 70% 0 70% 70%;
  background: linear-gradient(135deg, var(--accent), #ffdc73);
  opacity: .94;
  animation: tankDropPulse 3s ease-in-out infinite;
}
.tank__line {
  position: absolute;
  left: 38px;
  right: 38px;
  height: 1px;
  background: rgba(255,255,255,.24);
}
.tank__line--one { top: 32%; }
.tank__line--two { bottom: 26%; }

.ticker {
  overflow: hidden;
  border-block: 1px solid var(--line);
  background: rgba(255,255,255,.5);
}
.ticker__track {
  display: flex;
  width: max-content;
  gap: 12px;
  padding: 16px 0;
  animation: marquee 34s linear infinite;
}
.ticker__track span {
  padding: 9px 16px;
  border-radius: 999px;
  background: #fff;
  color: var(--primary-dark);
  font-weight: 800;
  box-shadow: 0 8px 20px rgba(15, 76, 68, .06);
}

.section-head p, .about__text p, .service p, .faq p, .contact-card p {
  color: var(--muted);
  font-size: 18px;
}
.section-head--center { max-width: 760px; margin: 0 auto 40px; text-align: center; }
.section-head--center .eyebrow { justify-content: center; }
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 28px;
}
.stats div {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--card);
  box-shadow: 0 10px 28px rgba(15, 76, 68, .07);
}
.stats strong { display: block; color: var(--primary-dark); font-size: 34px; line-height: 1; letter-spacing: -.04em; }
.stats span { color: var(--muted); font-weight: 700; }

.price-grid, .benefit-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.price-card, .benefit, .step, details {
  background: rgba(255,255,255,.88);
  border: 1px solid rgba(15, 118, 110, .12);
  border-radius: var(--radius);
  box-shadow: 0 14px 34px rgba(15, 76, 68, .08);
}
.price-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}
.price-card__icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 22px;
  border-radius: 16px;
  background: var(--bg-soft);
  color: var(--primary-dark);
  font-weight: 900;
}
.price-card p { color: var(--muted); margin-bottom: 20px; }
.price-card ul { margin: auto 0 0; padding: 0; list-style: none; }
.price-card li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 0;
  border-top: 1px solid var(--line);
}
.price-card li span { color: var(--muted); }
.price-card li strong { color: var(--primary-dark); white-space: nowrap; }

.service { background: linear-gradient(180deg, transparent, rgba(237,247,242,.78), transparent); }
.service__card {
  position: relative;
  min-height: 360px;
  display: grid;
  align-content: end;
  padding: 34px;
  border-radius: 38px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: var(--shadow);
}
.service__card::before {
  content: "";
  position: absolute;
  inset: 36px;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 30px;
}
.service__card strong { position: relative; z-index: 1; font-size: 40px; line-height: 1; letter-spacing: -.04em; }
.service__card small { position: relative; z-index: 1; max-width: 330px; margin-top: 10px; color: rgba(255,255,255,.72); font-size: 16px; }
.service__drop {
  position: absolute;
  right: 62px;
  top: 58px;
  width: 126px;
  height: 158px;
  transform: rotate(45deg);
  border-radius: 70% 0 70% 70%;
  background: linear-gradient(135deg, var(--accent), #ffe28a);
  animation: dropPulse 3.8s ease-in-out infinite;
}

.cities {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}
.cities span {
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--primary-dark);
  font-weight: 760;
  box-shadow: 0 8px 22px rgba(15, 76, 68, .06);
}
.benefit-grid { grid-template-columns: repeat(3, 1fr); }
.benefit { padding: 28px; }
.benefit span {
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  margin-bottom: 20px;
  border-radius: 16px;
  background: var(--accent-soft);
  color: var(--primary-dark);
  font-weight: 900;
}
.benefit p { margin-bottom: 0; color: var(--muted); }

.steps__line {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  position: relative;
}
.step { position: relative; padding: 28px; }
.step span {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  margin-bottom: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-weight: 900;
  box-shadow: 0 16px 34px rgba(15, 118, 110, .2);
}
.step p { margin-bottom: 0; color: var(--muted); }

.faq__list { display: grid; gap: 14px; }
details { padding: 0; overflow: hidden; }
summary {
  cursor: pointer;
  padding: 22px 24px;
  list-style: none;
  color: var(--primary-dark);
  font-size: 18px;
  font-weight: 850;
}
summary::-webkit-details-marker { display: none; }
details p { padding: 0 24px 22px; margin: 0; }

.contact-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
  padding: clamp(28px, 5vw, 54px);
  border-radius: 40px;
  background:
    radial-gradient(circle at top right, rgba(214,167,52,.18), transparent 22rem),
    linear-gradient(135deg, #fff, var(--bg-soft));
  border: 1px solid rgba(255,255,255,.92);
  box-shadow: var(--shadow);
}
.contact-card h2 { max-width: 730px; }
.contact-actions {
  display: grid;
  gap: 12px;
  min-width: 270px;
}
.phone-big {
  display: block;
  padding: 18px;
  border-radius: 22px;
  background: var(--primary-dark);
  color: #fff;
  text-align: center;
  font-weight: 900;
  box-shadow: 0 16px 36px rgba(15, 76, 68, .22);
}
.footer {
  padding: 32px 0;
  color: var(--muted);
  border-top: 1px solid var(--line);
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.footer p { margin: 0; }
.footer a { color: var(--primary-dark); font-weight: 800; }

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .65s ease, transform .65s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal--delay { transition-delay: .12s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}
@keyframes tankGlow {
  0%, 100% { filter: drop-shadow(0 0 0 rgba(214, 167, 52, 0)); }
  50% { filter: drop-shadow(0 0 18px rgba(214, 167, 52, .24)); }
}
@keyframes dropPulse {
  0%, 100% { transform: rotate(45deg) scale(1); }
  50% { transform: rotate(45deg) scale(1.06); }
}
@keyframes marquee { to { transform: translateX(-50%); } }

@media (max-width: 1080px) {
  .nav, .header__phone { display: none; }
  .burger { display: block; }
  .nav {
    position: fixed;
    inset: 78px 16px auto;
    display: grid;
    gap: 8px;
    padding: 18px;
    border-radius: 24px;
    background: rgba(255,255,255,.96);
    box-shadow: var(--shadow);
    transform: translateY(-20px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s ease, transform .2s ease;
  }
  .nav.is-open { opacity: 1; pointer-events: auto; transform: translateY(0); }
  .nav a { padding: 14px 16px; }
  .hero__grid, .split, .split--reverse { grid-template-columns: 1fr; }
  .hero__visual { min-height: 510px; }
  .price-grid { grid-template-columns: repeat(2, 1fr); }
  .benefit-grid { grid-template-columns: repeat(2, 1fr); }
  .steps__line { grid-template-columns: repeat(2, 1fr); }
  .contact-card { grid-template-columns: 1fr; }
  .contact-actions { min-width: 0; }
}

@media (max-width: 700px) {
  .container { width: min(100% - 24px, var(--container)); }
  .section { padding: 64px 0; }
  .hero { padding-top: 56px; }
  .header__inner { min-height: 68px; }
  .nav { inset: 68px 12px auto; }
  .logo__text { display: none; }
  h1 { font-size: clamp(38px, 12vw, 54px); }
  h2 { font-size: clamp(30px, 9vw, 42px); }
  .hero__lead { font-size: 18px; }
  .hero__actions, .contact-actions { width: 100%; }
  .btn { width: 100%; }
  .hero__visual { min-height: 450px; border-radius: 30px; }
  .tank { inset: 136px 34px 70px; border-radius: 34px 34px 56px 56px; }
  .tank::before { width: 128px; height: 46px; top: -38px; }
  .tank__drop { width: 70px; height: 92px; }
  .hero-card { padding: 16px; border-radius: 20px; }
  .hero-card strong { font-size: 24px; }
  .hero-card--main { left: 18px; top: 20px; max-width: 230px; }
  .hero-card--main strong { font-size: 34px; }
  .hero-card--mini { right: 18px; top: 226px; max-width: 166px; }
  .hero-card--doc { left: 18px; bottom: 24px; max-width: 210px; }
  .stats, .price-grid, .benefit-grid, .steps__line { grid-template-columns: 1fr; }
  .section-head--center { text-align: left; }
  .section-head--center .eyebrow { justify-content: flex-start; }
  .service__card { min-height: 300px; border-radius: 30px; }
  .contact-card { border-radius: 30px; }
  .footer__inner { display: grid; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

@keyframes tankDropPulse {
  0%, 100% { transform: translate(-50%, -50%) rotate(45deg) scale(1); }
  50% { transform: translate(-50%, -50%) rotate(45deg) scale(1.06); }
}