:root {
  --ink: #082f49;
  --muted: #49667a;
  --blue: #0787c8;
  --sky: #aeeeff;
  --green: #16a36a;
  --mint: #e9fff5;
  --wash: #f2fbff;
  --line: rgba(8, 47, 73, .14);
  --shadow: 0 18px 50px rgba(6, 62, 94, .14);
  --radius: 8px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Manrope", "Segoe UI", sans-serif;
  color: var(--ink);
  background: #fff;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1160px, calc(100% - 36px)); margin: 0 auto; }
.eyebrow { color: var(--green); font-weight: 800; text-transform: uppercase; letter-spacing: .08em; font-size: .78rem; }
.skip-link { position: absolute; left: -999px; top: 12px; background: #fff; padding: 10px; z-index: 10; }
.skip-link:focus { left: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.nav { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 900; font-size: 1.02rem; }
.logo-mark {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  background: linear-gradient(135deg, #eafff3, #dff7ff);
  box-shadow: inset 0 0 0 1px rgba(8,47,73,.1);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
  flex: 0 0 auto;
  animation: logo-float 5.2s ease-in-out infinite;
}
.logo-mark::after {
  content: "";
  position: absolute;
  inset: -40%;
  background: linear-gradient(120deg, transparent 38%, rgba(255,255,255,.78), transparent 62%);
  transform: translateX(-80%) rotate(16deg);
  animation: logo-shine 5.8s ease-in-out infinite;
}
.logo-mark::before {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: inherit;
  background: radial-gradient(circle at 50% 45%, rgba(174,238,255,.52), transparent 65%);
  opacity: .72;
  animation: logo-glow 3.4s ease-in-out infinite;
}
.logo-mark svg { width: 36px; height: 36px; }
.logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
  position: relative;
  z-index: 1;
  transition: transform .28s ease, filter .28s ease;
}
.brand:hover .logo-mark img {
  transform: scale(1.06) rotate(2deg);
  filter: saturate(1.12) brightness(1.04);
}
.nav-links { display: flex; align-items: center; gap: 18px; font-size: .94rem; color: #244a61; }
.nav-links a:hover { color: var(--blue); }
.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}
.menu-toggle span {
  width: 22px;
  height: 2px;
  border-radius: 999px;
  background: var(--ink);
  transition: transform .22s ease, opacity .22s ease;
}
.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); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: var(--radius);
  padding: 13px 18px;
  min-height: 48px;
  font-weight: 850;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent, rgba(255,255,255,.34), transparent);
  transform: translateX(-120%);
  transition: transform .55s ease;
}
.btn:hover::after { transform: translateX(120%); }
.btn:hover { transform: translateY(-1px); box-shadow: 0 14px 30px rgba(7, 135, 200, .18); }
.btn-primary { color: #fff; background: linear-gradient(135deg, var(--green), var(--blue)); }
.btn-ghost { color: var(--ink); background: rgba(255,255,255,.88); border: 1px solid var(--line); }
.btn-outline { color: var(--blue); background: #fff; border: 1px solid rgba(7,135,200,.35); }

.hero, .page-hero, .landing-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background:
    linear-gradient(105deg, rgba(240,253,255,.94) 0%, rgba(235,255,245,.86) 48%, rgba(255,255,255,.52) 100%),
    var(--hero-image, url("https://images.unsplash.com/photo-1600585154340-be6161a56a0c?auto=format&fit=crop&w=1800&q=72")) center/cover;
}
.hero::after, .page-hero::after, .landing-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(circle at 16% 72%, rgba(25,174,230,.18) 0 5px, transparent 6px),
    radial-gradient(circle at 78% 26%, rgba(22,163,106,.16) 0 8px, transparent 9px),
    radial-gradient(circle at 88% 76%, rgba(174,238,255,.32) 0 12px, transparent 13px),
    radial-gradient(circle at 48% 18%, rgba(25,174,230,.15) 0 4px, transparent 5px);
  background-size: 220px 220px, 310px 310px, 430px 430px, 180px 180px;
  animation: ozone-drift 18s linear infinite;
}
.hero::before, .page-hero::before, .process-band::before, .cta-band::before, .landing-hero::before {
  content: "O3";
  position: absolute;
  right: clamp(20px, 7vw, 120px);
  top: 16%;
  font-size: clamp(70px, 16vw, 210px);
  font-weight: 900;
  line-height: 1;
  color: rgba(7, 135, 200, .09);
  z-index: -1;
}
.hero-inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 46px; align-items: center; min-height: 680px; padding: 70px 0; }
.hero h1, .page-hero h1, .landing-hero h1 {
  animation: rise-in .85s cubic-bezier(.2,.8,.2,1) both;
}
.hero .lead, .page-hero .lead, .landing-hero .lead {
  animation: rise-in .85s cubic-bezier(.2,.8,.2,1) .12s both;
}
.hero-actions, .trust-points {
  animation: rise-in .85s cubic-bezier(.2,.8,.2,1) .22s both;
}
h1, h2, h3 { line-height: 1.05; margin: 0 0 16px; }
h1 { font-size: clamp(2.45rem, 6vw, 5rem); max-width: 760px; letter-spacing: 0; }
h2 { font-size: clamp(2rem, 4vw, 3.2rem); }
h3 { font-size: 1.28rem; }
.lead { font-size: clamp(1.05rem, 2vw, 1.28rem); color: var(--muted); max-width: 720px; }
.hero-actions, .action-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-panel {
  background: rgba(255, 255, 255, .82);
  border: 1px solid rgba(8, 47, 73, .12);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 24px;
  animation: float-in .95s cubic-bezier(.2,.8,.2,1) .18s both, panel-breathe 6s ease-in-out 1.4s infinite;
}
.metric-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 20px; }
.metric { background: var(--wash); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.metric strong { display: block; font-size: 1.9rem; color: var(--blue); line-height: 1; }
.metric span { color: var(--muted); font-size: .92rem; }

section { padding: 82px 0; }
.home-ozone-bg {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background:
    linear-gradient(115deg, rgba(255,255,255,.94), rgba(242,251,255,.88) 46%, rgba(233,255,245,.84)),
    url("assets/ozone-molecules-background-optimized.jpg") center center/cover fixed;
}
.home-ozone-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(circle at 12% 18%, rgba(174,238,255,.5), transparent 28%),
    radial-gradient(circle at 82% 72%, rgba(22,163,106,.12), transparent 32%);
  animation: ozone-bg-breathe 9s ease-in-out infinite;
}
.home-ozone-bg > section:not(.process-band):not(.cta-band) {
  background: transparent;
}
.home-ozone-bg .container {
  position: relative;
  z-index: 1;
}
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 34px; }
.section-head p { max-width: 610px; color: var(--muted); margin: 0; }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.service-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  box-shadow: 0 12px 34px rgba(8,47,73,.08);
  transform: translateZ(0);
  transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}
.service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(7,135,200,.32);
  box-shadow: 0 22px 50px rgba(8,47,73,.14);
}
.service-card img { height: 205px; width: 100%; object-fit: cover; }
.service-card:hover img { transform: scale(1.045); }
.service-card img {
  transition: transform .55s ease, filter .55s ease;
}
.service-card:hover img { filter: saturate(1.08) brightness(1.04); }
.service-card div { padding: 20px; }
.service-card p { color: var(--muted); margin: 0 0 16px; }
.service-card a { color: var(--blue); font-weight: 850; }

.process-band, .cta-band {
  position: relative;
  isolation: isolate;
  background:
    linear-gradient(120deg, rgba(8,47,73,.88), rgba(7,135,200,.72)),
    url("https://images.unsplash.com/photo-1600566753190-17f0baa2a6c3?auto=format&fit=crop&w=1800&q=72") center/cover;
  color: #fff;
}
.process-band {
  background-attachment: fixed;
}
.process-band .eyebrow, .cta-band .eyebrow { color: var(--sky); }
.process-band p, .cta-band p { color: rgba(255,255,255,.82); }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 30px; }
.step { border: 1px solid rgba(255,255,255,.2); border-radius: var(--radius); padding: 20px; background: rgba(255,255,255,.1); }
.step {
  transition: transform .28s ease, background .28s ease, border-color .28s ease;
}
.step:hover {
  transform: translateY(-6px);
  background: rgba(255,255,255,.16);
  border-color: rgba(255,255,255,.36);
}
.step strong { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: #fff; color: var(--blue); margin-bottom: 16px; }
.step strong {
  animation: oxygen-pulse 3.2s ease-in-out infinite;
}

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.photo-frame { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.photo-frame img { aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.photo-frame img { transition: transform 1.1s ease; }
.photo-frame:hover img { transform: scale(1.04); }
.area-list { columns: 2; padding-left: 18px; color: var(--muted); }
.reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.review { background: var(--wash); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.review {
  transition: transform .28s ease, box-shadow .28s ease, background .28s ease;
}
.review:hover {
  transform: translateY(-5px);
  background: #fff;
  box-shadow: 0 18px 42px rgba(8,47,73,.1);
}
.process-band .review {
  background: rgba(255, 255, 255, .94);
  border-color: rgba(255, 255, 255, .42);
  color: var(--ink);
}
.process-band .review p {
  color: var(--muted);
}
.process-band .review strong {
  color: var(--ink);
}
.stars { color: #0a9f68; letter-spacing: .06em; }

.form-wrap { background: linear-gradient(135deg, #effcff, #f3fff8); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.form-wrap {
  position: relative;
  overflow: hidden;
}
.form-wrap::before {
  content: "";
  position: absolute;
  width: 190px;
  height: 190px;
  right: -82px;
  top: -86px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(174,238,255,.64), transparent 66%);
  animation: soft-orbit 7s ease-in-out infinite;
}
.estimate-form { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.estimate-form label { font-weight: 800; font-size: .9rem; }
.estimate-form input, .estimate-form select, .estimate-form textarea {
  width: 100%;
  margin-top: 6px;
  border: 1px solid rgba(8,47,73,.18);
  border-radius: var(--radius);
  padding: 12px 13px;
  font: inherit;
  min-height: 46px;
  transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.estimate-form input:focus, .estimate-form select:focus, .estimate-form textarea:focus {
  outline: 0;
  border-color: rgba(7,135,200,.65);
  box-shadow: 0 0 0 4px rgba(174,238,255,.45);
  background: #fff;
}
.estimate-form textarea, .estimate-form .wide { grid-column: 1 / -1; }
.estimate-form textarea { min-height: 118px; }
.form-status {
  grid-column: 1 / -1;
  margin: 0;
  padding: 11px 12px;
  border-radius: var(--radius);
  background: #f2fbff;
  color: var(--ink);
  font-size: .92rem;
  font-weight: 750;
}
.form-status[data-type="success"] {
  background: #e9fff5;
  color: #0f6b45;
}
.form-status[data-type="error"] {
  background: #fff1f1;
  color: #9b1c1c;
}
.estimate-form button:disabled,
.chat-estimate-form button:disabled {
  cursor: wait;
  opacity: .72;
}

.page-hero { padding: 96px 0; }
.page-hero .container { max-width: 900px; margin-left: max(18px, calc((100vw - 1160px)/2)); }
.thank-you-hero {
  position: relative;
  isolation: isolate;
  min-height: 68vh;
  display: flex;
  align-items: center;
  padding: 88px 0;
  overflow: hidden;
  background:
    linear-gradient(105deg, rgba(240,253,255,.96) 0%, rgba(235,255,245,.9) 48%, rgba(255,255,255,.62) 100%),
    var(--hero-image) center/cover;
}
.thank-you-hero::after {
  content: "";
  position: absolute;
  inset: auto -8% -24% 30%;
  height: 280px;
  background: radial-gradient(circle, rgba(174,238,255,.62), transparent 64%);
  z-index: -1;
}
.thank-you-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) 380px;
  gap: 34px;
  align-items: center;
}
.thank-you-copy {
  max-width: 760px;
}
.thank-you-panel {
  background: rgba(255,255,255,.9);
  border: 1px solid rgba(8,47,73,.12);
  border-radius: 14px;
  padding: 26px;
  box-shadow: 0 22px 54px rgba(6,62,94,.16);
  backdrop-filter: blur(10px);
}
.confirm-mark {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  color: #fff;
  font-size: 1.45rem;
  font-weight: 950;
  background: linear-gradient(135deg, var(--green), var(--blue));
  box-shadow: 0 16px 36px rgba(7,135,200,.24);
}
.next-steps {
  margin: 16px 0 18px;
  padding-left: 20px;
  color: var(--muted);
}
.next-steps li {
  margin: 10px 0;
  padding-left: 4px;
}
.thank-you-panel a {
  color: var(--blue);
  font-weight: 900;
}
.content-grid { display: grid; grid-template-columns: 1fr 340px; gap: 34px; align-items: start; }
.content-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; background: #fff; box-shadow: 0 12px 34px rgba(8,47,73,.06); }
.bullets { padding-left: 20px; color: var(--muted); }
.side-box { position: sticky; top: 104px; background: var(--wash); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }

.faq-list { display: grid; gap: 12px; }
details { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; background: #fff; }
details {
  transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
}
details[open] {
  border-color: rgba(7,135,200,.28);
  box-shadow: 0 14px 34px rgba(8,47,73,.08);
}
details:hover { transform: translateY(-2px); }
summary { cursor: pointer; font-weight: 900; }
details p { color: var(--muted); margin-bottom: 0; }

.landing-header { padding: 16px 0; background: #fff; border-bottom: 1px solid var(--line); }
.landing-top { display: flex; justify-content: space-between; align-items: center; gap: 18px; }
.landing-hero .hero-inner { grid-template-columns: .9fr 1.1fr; min-height: 690px; }
.trust-points { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 24px; }
.trust-points span { background: rgba(255,255,255,.82); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px; font-weight: 800; }

.site-footer { background: #06334a; color: #fff; padding: 48px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 28px; }
.site-footer a, .site-footer p { color: rgba(255,255,255,.82); }
.footer-call {
  margin-top: 28px;
}
.footer-call-button {
  width: min(100%, 760px);
  min-height: 64px;
  margin: 0 auto;
  padding: 16px 24px;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  letter-spacing: 0;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  box-shadow: 0 18px 42px rgba(19,166,111,.22);
}
.footer-call-button span {
  font-size: .9em;
  opacity: .9;
  text-transform: uppercase;
}
.footer-call-button strong {
  font-size: 1.12em;
  letter-spacing: .01em;
}
.footer-bottom { margin-top: 32px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.16); color: rgba(255,255,255,.65); font-size: .9rem; }

.chat-button {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 30;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  border: 0;
  background: linear-gradient(135deg, var(--green), var(--blue));
  color: #fff;
  box-shadow: 0 16px 40px rgba(7,135,200,.34);
  font-size: 24px;
  cursor: pointer;
  font-weight: 900;
  isolation: isolate;
  animation: chat-wiggle 5s ease-in-out infinite, chat-pulse 2.8s ease-in-out infinite;
}
.chat-button::before,
.chat-button::after {
  content: "";
  position: absolute;
  inset: -8px;
  z-index: -1;
  border-radius: 50%;
  border: 2px solid rgba(22, 163, 106, .34);
  animation: chat-ring 2.2s ease-out infinite;
}
.chat-button::after {
  inset: -15px;
  border-color: rgba(25, 174, 230, .24);
  animation-delay: .45s;
}
.chat-button .chat-badge {
  position: absolute;
  top: -3px;
  right: -2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #13a66f;
  border: 3px solid #fff;
  box-shadow: 0 0 0 0 rgba(19, 166, 111, .5);
  animation: badge-pop 1.8s ease-in-out infinite;
}
.chat-box {
  position: fixed;
  right: 18px;
  bottom: 88px;
  z-index: 30;
  width: min(360px, calc(100vw - 36px));
  max-height: min(680px, calc(100dvh - 118px));
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: none;
  flex-direction: column;
}
.chat-box.open { display: flex; }
.chat-box.open { animation: chat-pop .28s cubic-bezier(.2,.8,.2,1) both; }
.chat-head { background: #06334a; color: #fff; padding: 12px 14px; display: flex; justify-content: space-between; align-items: center; gap: 10px; flex: 0 0 auto; }
.chat-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.chat-brand img {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 0 0 1px rgba(255,255,255,.28), 0 8px 18px rgba(0,0,0,.18);
}
.chat-status {
  margin-left: auto;
  font-size: .82rem;
  color: rgba(255,255,255,.78);
}
.chat-close {
  width: 32px;
  height: 32px;
  border: 1px solid rgba(255,255,255,.24);
  border-radius: 50%;
  background: rgba(255,255,255,.08);
  color: #fff;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}
.chat-body { padding: 14px; max-height: 320px; overflow-y: auto; display: grid; gap: 10px; flex: 1 1 auto; }
.message { border-radius: 14px; padding: 10px 12px; max-width: 92%; font-size: .92rem; }
.message { animation: message-in .24s ease both; }
.bot { background: var(--wash); }
.user { background: #def7e9; justify-self: end; }
.chat-actions {
  padding: 0 12px 12px;
}
.chat-estimate-toggle {
  width: 100%;
  border: 0;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--green), var(--blue));
  color: #fff;
  font-weight: 900;
  min-height: 42px;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(7,135,200,.2);
}
.chat-estimate-form {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 9px;
  padding: 12px;
  border-top: 1px solid var(--line);
  background: linear-gradient(135deg, #f4fdff, #f2fff8);
}
.chat-estimate-form.open {
  display: grid;
  animation: chat-pop .24s cubic-bezier(.2,.8,.2,1) both;
  overflow-y: auto;
}
.chat-estimate-form label {
  font-size: .76rem;
  font-weight: 850;
  color: var(--ink);
}
.chat-estimate-form input,
.chat-estimate-form select,
.chat-estimate-form textarea {
  width: 100%;
  margin-top: 4px;
  border: 1px solid rgba(8,47,73,.18);
  border-radius: var(--radius);
  padding: 8px 9px;
  font: inherit;
  font-size: .86rem;
  background: #fff;
}
.chat-estimate-form label:nth-last-of-type(1),
.chat-estimate-form textarea,
.chat-estimate-form button {
  grid-column: 1 / -1;
}
.chat-estimate-form textarea {
  min-height: 70px;
  resize: vertical;
}
.chat-estimate-form button {
  border: 0;
  border-radius: var(--radius);
  background: #06334a;
  color: #fff;
  font-weight: 900;
  min-height: 40px;
  cursor: pointer;
}
.chat-input { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--line); }
.chat-input input { flex: 1; min-width: 0; border: 1px solid var(--line); border-radius: var(--radius); padding: 10px; }
.chat-input button { border: 0; border-radius: var(--radius); background: var(--blue); color: #fff; font-weight: 850; padding: 0 13px; }

@media (max-width: 900px) {
  .nav { display: grid; grid-template-columns: 1fr auto; align-items: center; padding: 12px 0; }
  .menu-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    grid-column: 1 / -1;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 12px 0 4px;
  }
  .nav-links.open { display: flex; }
  .nav-links a:not(.btn) {
    display: block;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255,255,255,.86);
  }
  .nav-links .btn {
    width: 100%;
    min-height: 58px;
    font-size: 1.08rem;
  }
  .hero-inner, .landing-hero .hero-inner, .split, .content-grid { grid-template-columns: 1fr; }
  .thank-you-grid { grid-template-columns: 1fr; }
  .hero-inner { min-height: auto; }
  .services-grid, .reviews, .steps { grid-template-columns: repeat(2, 1fr); }
  .side-box { position: static; }
}
@media (max-width: 620px) {
  .container { width: min(100% - 24px, 1160px); }
  section { padding: 58px 0; }
  .services-grid, .reviews, .steps, .metric-grid, .estimate-form, .trust-points { grid-template-columns: 1fr; }
  .section-head { display: block; }
  .area-list { columns: 1; }
  .hero-panel { padding: 18px; }
  .landing-header .brand > span:not(.logo-mark) {
    display: none;
  }
  .landing-header .landing-top {
    gap: 12px;
  }
  .landing-header .brand {
    flex: 0 0 auto;
  }
  .landing-header .logo-mark {
    width: 58px;
    height: 58px;
  }
  .landing-header .btn {
    flex: 1 1 auto;
    min-width: 0;
    padding-inline: 12px;
  }
  .thank-you-hero {
    min-height: auto;
    padding: 62px 0;
  }
  .thank-you-panel {
    padding: 20px;
  }
  .btn { width: 100%; }
  .site-footer {
    padding: 34px 0 22px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .site-footer .brand {
    align-items: center;
  }
  .site-footer p {
    margin: 10px 0 0;
    max-width: 34ch;
  }
  .site-footer h3 {
    margin-bottom: 10px;
  }
  .site-footer a {
    display: inline-block;
    padding: 3px 0;
  }
  .footer-call {
    margin-top: 24px;
  }
  .site-footer .footer-call-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 56px;
    padding: 12px 16px;
    font-size: 1rem;
    line-height: 1.15;
    text-align: center;
    border-radius: 14px;
    color: #fff;
    background: linear-gradient(135deg, #12b886 0%, #0ea5d9 100%);
    box-shadow: 0 14px 30px rgba(5, 150, 190, .25);
  }
  .site-footer .footer-call-button span,
  .site-footer .footer-call-button strong {
    display: block;
    padding: 0;
    color: #fff;
  }
  .site-footer .footer-call-button span {
    width: 100%;
    font-size: .72rem;
    letter-spacing: .08em;
    line-height: 1;
  }
  .site-footer .footer-call-button strong {
    width: 100%;
    font-size: 1.2rem;
    line-height: 1.15;
  }
  .footer-bottom {
    margin-top: 24px;
    padding-right: 74px;
    font-size: .86rem;
    line-height: 1.55;
  }
  .chat-button {
    right: 14px;
    bottom: 14px;
    width: 56px;
    height: 56px;
  }
  .chat-box {
    left: 12px;
    right: 12px;
    bottom: 82px;
    width: auto;
    max-height: calc(100dvh - 106px);
    border-radius: 10px;
  }
  .chat-head {
    padding: 10px 12px;
  }
  .chat-brand strong {
    font-size: .92rem;
  }
  .chat-brand img {
    width: 30px;
    height: 30px;
  }
  .chat-status {
    display: none;
  }
  .chat-body {
    padding: 12px;
    max-height: none;
  }
  .message {
    max-width: 100%;
    font-size: .88rem;
  }
  .chat-estimate-form {
    grid-template-columns: 1fr;
    max-height: 44dvh;
    padding: 10px 12px;
  }
  .chat-estimate-form input,
  .chat-estimate-form select,
  .chat-estimate-form textarea {
    min-height: 40px;
    font-size: .84rem;
  }
  .chat-estimate-form textarea {
    min-height: 58px;
  }
  .chat-input {
    padding: 10px;
    flex: 0 0 auto;
  }
  .chat-input button {
    min-width: 64px;
  }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .72s ease, transform .72s cubic-bezier(.2,.8,.2,1);
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: .08s; }
.reveal-delay-2 { transition-delay: .16s; }
.reveal-delay-3 { transition-delay: .24s; }

@keyframes rise-in {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes float-in {
  from { opacity: 0; transform: translateY(28px) scale(.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes panel-breathe {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@keyframes ozone-drift {
  from { background-position: 0 0, 0 0, 0 0, 0 0; }
  to { background-position: 220px -220px, -310px 310px, 430px -430px, -180px -180px; }
}
@keyframes ozone-bg-breathe {
  0%, 100% { opacity: .68; transform: scale(1); }
  50% { opacity: .95; transform: scale(1.025); }
}
@keyframes oxygen-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(174,238,255,.0); }
  50% { box-shadow: 0 0 0 9px rgba(174,238,255,.22); }
}
@keyframes soft-orbit {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-22px, 18px) scale(1.08); }
}
@keyframes chat-pulse {
  0%, 100% { box-shadow: 0 16px 40px rgba(7,135,200,.34), 0 0 0 0 rgba(22,163,106,.28); }
  50% { box-shadow: 0 16px 40px rgba(7,135,200,.34), 0 0 0 10px rgba(22,163,106,0); }
}
@keyframes chat-ring {
  0% { opacity: .85; transform: scale(.78); }
  100% { opacity: 0; transform: scale(1.35); }
}
@keyframes chat-wiggle {
  0%, 74%, 100% { transform: rotate(0deg) scale(1); }
  78% { transform: rotate(-7deg) scale(1.04); }
  82% { transform: rotate(7deg) scale(1.04); }
  86% { transform: rotate(-5deg) scale(1.03); }
  90% { transform: rotate(4deg) scale(1.02); }
}
@keyframes badge-pop {
  0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(19, 166, 111, .46); }
  50% { transform: scale(1.18); box-shadow: 0 0 0 8px rgba(19, 166, 111, 0); }
}
@keyframes chat-pop {
  from { opacity: 0; transform: translateY(12px) scale(.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes logo-shine {
  0%, 62% { transform: translateX(-90%) rotate(16deg); }
  78%, 100% { transform: translateX(90%) rotate(16deg); }
}
@keyframes logo-float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-3px) rotate(-1.5deg); }
}
@keyframes logo-glow {
  0%, 100% { opacity: .36; transform: scale(.92); }
  50% { opacity: .85; transform: scale(1.08); }
}
@keyframes message-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

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