/* ===================== Design tokens ===================== */
:root {
  --color-bg: #F8F5EF;
  --color-bg-alt: #EBF0EA;
  --color-primary: #1F3D31;
  --color-primary-dark: #14281F;
  --color-primary-light: #E1EAE3;
  --color-accent: #C97B5B;
  --color-accent-dark: #AD6247;
  --color-text: #22301F;
  --color-text-muted: #626F5F;
  --color-white: #FFFFFF;
  --color-border: #E4DED2;

  --font-heading-en: 'Baloo 2', sans-serif;
  --font-heading-ar: 'Baloo Bhaijaan 2', sans-serif;
  --font-body-en: 'Nunito', sans-serif;
  --font-body-ar: 'Cairo', sans-serif;

  --radius-lg: 26px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --shadow-soft: 0 10px 30px -12px rgba(43, 58, 58, 0.18);
  --shadow-card: 0 8px 24px -10px rgba(43, 58, 58, 0.14);
  --header-h: 78px;
}

html[lang="ar"] { --font-heading: var(--font-heading-ar); --font-body: var(--font-body-ar); }
html[lang="en"] { --font-heading: var(--font-heading-en); --font-body: var(--font-body-en); }

/* ===================== Reset ===================== */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body, var(--font-body-en));
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3, h4 { font-family: var(--font-heading, var(--font-heading-en)); margin: 0 0 .5em; line-height: 1.25; font-weight: 700; }
p { margin: 0 0 1em; color: var(--color-text-muted); }
a { color: inherit; text-decoration: none; }
ul { padding-inline-start: 1.2em; margin: 0; }
img, svg { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

.container { max-width: 1160px; margin: 0 auto; padding-inline: 24px; }

.eyebrow {
  display: inline-block;
  color: var(--color-accent-dark);
  background: #F3E4DA;
  padding: 6px 14px;
  border-radius: 999px;
  font-weight: 800;
  font-size: .78rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 1rem;
  border: 2px solid transparent;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn-primary { background: var(--color-primary); color: #fff; box-shadow: var(--shadow-card); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-soft); background: var(--color-primary-dark); }
.btn-outline { border-color: var(--color-primary); color: var(--color-primary-dark); background: #fff; }
.btn-outline:hover { transform: translateY(-2px); background: var(--color-primary-light); }

/* ===================== Reveal animation ===================== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ===================== Header ===================== */
.site-header {
  position: fixed; inset-inline: 0; top: 0; z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid transparent;
  transition: box-shadow .25s ease, border-color .25s ease, padding .25s ease;
  min-height: var(--header-h);
  padding-block: 10px;
  display: flex; align-items: center;
}
.site-header.scrolled { box-shadow: 0 4px 20px -10px rgba(43,58,58,.25); border-color: var(--color-border); padding-block: 6px; }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; width: 100%; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-title { font-family: var(--font-heading, var(--font-heading-en)); font-weight: 800; font-size: 1.02rem; color: var(--color-primary-dark); }
.brand-sub { font-size: .74rem; color: var(--color-text-muted); font-weight: 600; }

.main-nav { display: flex; align-items: center; gap: 28px; }
.nav-link { font-weight: 700; font-size: .95rem; color: var(--color-text); position: relative; padding: 6px 0; }
.nav-link:hover { color: var(--color-primary-dark); }
.nav-link.active { color: var(--color-primary-dark); }
.nav-cta { background: var(--color-primary); color: #fff !important; padding: 10px 20px; border-radius: 999px; }
.nav-cta:hover { background: var(--color-primary-dark); }

.header-actions { display: flex; align-items: center; gap: 10px; }
.lang-toggle {
  border: 2px solid var(--color-primary); background: #fff; color: var(--color-primary-dark);
  border-radius: 999px; padding: 8px 16px; font-weight: 800; font-size: .82rem;
}
.lang-toggle:hover { background: var(--color-primary-light); }
.header-call {
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 50%; background: var(--color-accent); color: #fff;
}
.header-call:hover { background: var(--color-accent-dark); }

.menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 8px; }
.menu-toggle span { width: 24px; height: 2.5px; background: var(--color-text); border-radius: 2px; transition: transform .2s ease, opacity .2s ease; }

/* ===================== Hero ===================== */
.hero {
  position: relative; overflow: hidden; isolation: isolate;
  padding-top: calc(var(--header-h) + 120px); padding-bottom: 130px;
  min-height: 640px; display: flex; align-items: center;
}
.hero-media {
  position: absolute; inset: 0; z-index: -2;
  background-size: cover; background-position: center 55%;
}
.hero-scrim {
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, rgba(13,28,21,.88) 0%, rgba(13,28,21,.82) 50%, rgba(13,28,21,.94) 100%);
}
.hero-inner { display: block; }
.hero-copy { max-width: 640px; }
.hero-text { font-size: 1.08rem; max-width: 46ch; color: #E4E9E2; }
h1 { font-size: clamp(2.1rem, 4vw, 3.1rem); color: var(--color-text); }
.hero-copy h1 { color: #fff; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 26px 0 22px; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 10px; }
.badge {
  font-size: .78rem; font-weight: 700; color: var(--color-primary-dark);
  background: var(--color-primary-light); padding: 7px 14px; border-radius: 999px;
}
.badge-on-photo { background: rgba(255,255,255,.14); color: #fff; border: 1px solid rgba(255,255,255,.28); }
.eyebrow-on-photo { background: rgba(255,255,255,.14); color: #F3D9C8; border: 1px solid rgba(255,255,255,.24); }
.btn-outline-on-photo { border-color: rgba(255,255,255,.5); color: #fff; background: rgba(255,255,255,.08); }
.btn-outline-on-photo:hover { background: rgba(255,255,255,.18); }

/* ===================== Stats strip ===================== */
.stats-strip { background: var(--color-primary); padding: 44px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.stat { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; color: #fff; }
.stat-icon {
  width: 44px; height: 44px; border-radius: 12px; background: rgba(255,255,255,.1);
  display: flex; align-items: center; justify-content: center; margin-bottom: 4px;
}
.stat strong { font-family: var(--font-heading, var(--font-heading-en)); font-size: 1.4rem; }
.stat span { font-size: .84rem; color: #C6D3C8; line-height: 1.4; }

/* ===================== Section basics ===================== */
.section { padding: 86px 0; }
.section-alt { background: var(--color-bg-alt); }
.section-head { max-width: 620px; margin-inline: auto; text-align: center; margin-bottom: 50px; }
.section-head h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); }
.section-head p { font-size: 1.02rem; }

/* ===================== Services grid ===================== */
.grid { display: grid; gap: 22px; }
.services-grid, .other-services-grid { grid-template-columns: repeat(4, 1fr); }
.card {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md);
  padding: 30px 26px; box-shadow: var(--shadow-card);
  transition: transform .22s ease, box-shadow .22s ease;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-soft); }
.card-icon {
  width: 60px; height: 60px; border-radius: 16px; background: var(--color-primary-light);
  display: flex; align-items: center; justify-content: center; margin-bottom: 16px;
}
.card h3 { font-size: 1.12rem; color: var(--color-text); }
.card p { font-size: .94rem; margin-bottom: 0; }

/* ===================== Risk calculator ===================== */
.calc-banner {
  max-width: 780px; margin: 0 auto 28px; display: flex; align-items: flex-start; gap: 12px;
  background: var(--color-primary-light); border: 1px solid #CBDECD; border-radius: var(--radius-md); padding: 16px 20px;
}
.calc-banner-icon { flex-shrink: 0; margin-top: 2px; }
.calc-banner p { margin: 0; font-size: .9rem; color: var(--color-primary-dark); }
.calc-banner strong { color: var(--color-primary-dark); }
.calculator { display: grid; grid-template-columns: .8fr 1.2fr; gap: 26px; max-width: 1000px; margin: 0 auto; align-items: start; }
.calc-result {
  background: var(--color-primary); color: #fff; border-radius: var(--radius-lg);
  padding: 32px 28px; box-shadow: var(--shadow-soft); position: sticky; top: calc(var(--header-h) + 20px);
  transition: background .3s ease;
}
.calc-result-icon { width: 46px; height: 46px; border-radius: 12px; background: #fff; display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.calc-result-tag { display: block; font-size: .76rem; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; color: #B9CBBB; margin-bottom: 6px; }
.calc-result h3 { color: #fff; font-size: 1.3rem; margin-bottom: 10px; }
.calc-result p { color: #D6E0D6; font-size: .92rem; margin-bottom: 20px; }
.calc-result.level-watch { background: var(--color-accent-dark); }
.calc-result.level-watch p { color: #F5E2D8; }
.calc-result.level-watch .calc-result-tag { color: #F0CDB8; }
.calc-cta { background: #fff; color: var(--color-primary-dark); }
.calc-cta:hover { background: #EFEAE0; }

.calc-options { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 26px; }
.calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px; }
.calc-option {
  display: flex; align-items: flex-start; gap: 10px; padding: 14px 16px; border-radius: var(--radius-sm);
  background: var(--color-bg); border: 1.5px solid var(--color-border); cursor: pointer; font-size: .88rem; font-weight: 700;
  transition: border-color .18s ease, background .18s ease;
}
.calc-option:has(input:checked) { border-color: var(--color-primary); background: var(--color-primary-light); }
.calc-option input { accent-color: var(--color-primary); width: 17px; height: 17px; flex-shrink: 0; margin-top: 2px; }
.calc-option-text { flex: 1; display: flex; flex-direction: column; gap: 3px; }
.calc-option-label { line-height: 1.3; }
.calc-option-tag { color: var(--color-accent-dark); font-weight: 700; font-size: .75rem; }
.calc-flag {
  display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-radius: var(--radius-sm);
  background: #FBEFE9; border: 1.5px solid #EBCDBB; cursor: pointer; font-size: .88rem; font-weight: 700; color: var(--color-accent-dark);
  margin-bottom: 16px;
}
.calc-flag input { accent-color: var(--color-accent-dark); width: 17px; height: 17px; flex-shrink: 0; }
.calc-flag-icon { flex-shrink: 0; }
.calc-reset {
  background: none; border: 1.5px solid var(--color-border); color: var(--color-text-muted);
  padding: 9px 18px; border-radius: 999px; font-weight: 700; font-size: .84rem;
}
.calc-reset:hover { border-color: var(--color-primary); color: var(--color-primary-dark); }

/* ===================== Accordion ===================== */
.accordion { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.acc-item { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md); overflow: hidden; }
.acc-trigger {
  width: 100%; display: flex; align-items: center; gap: 14px; text-align: start;
  background: none; border: none; padding: 20px 22px; font-weight: 800; font-size: 1.02rem; color: var(--color-text);
}
.acc-icon { flex-shrink: 0; width: 40px; height: 40px; border-radius: 12px; background: var(--color-bg-alt); display: flex; align-items: center; justify-content: center; }
.acc-title { flex: 1; }
.acc-caret { transition: transform .25s ease; color: var(--color-primary); font-size: 1.2rem; }
.acc-item.is-open .acc-caret { transform: rotate(180deg); }
.acc-panel { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .32s ease; }
.acc-item.is-open .acc-panel { grid-template-rows: 1fr; }
.acc-panel-inner { overflow: hidden; }
.acc-panel-inner > p { padding: 0 22px 22px 74px; margin: 0; font-size: .96rem; }
html[dir="rtl"] .acc-panel-inner > p { padding: 0 74px 22px 22px; }
.acc-media { margin: 0 22px 16px 74px; max-width: 260px; }
html[dir="rtl"] .acc-media { margin: 0 74px 16px 22px; }

/* ===================== Hip diagram toggle ===================== */
.hip-toggle { margin: 0 22px 22px 74px; }
html[dir="rtl"] .hip-toggle { margin: 0 74px 22px 22px; }
.hip-toggle-buttons { display: inline-flex; background: var(--color-bg); border-radius: 999px; padding: 4px; gap: 4px; margin-bottom: 14px; border: 1px solid var(--color-border); }
.hip-toggle-btn { border: none; background: none; padding: 8px 18px; border-radius: 999px; font-weight: 700; font-size: .84rem; color: var(--color-text-muted); }
.hip-toggle-btn.is-active { background: var(--color-primary); color: #fff; }
.hip-diagram { max-width: 220px; background: var(--color-primary-light); border-radius: var(--radius-md); padding: 18px; text-align: center; }
.hip-head { transition: transform .45s cubic-bezier(.34,1.4,.64,1), fill .3s ease; }
.hip-diagram.is-normal .hip-head { transform: translate(-28px, 46px); fill: var(--color-primary); }
.hip-diagram-label { display: block; margin-top: 6px; font-weight: 800; font-size: .84rem; color: var(--color-accent-dark); }
.hip-diagram.is-normal .hip-diagram-label { color: var(--color-primary-dark); }

/* ===================== Stat bars ===================== */
.stat-bars { margin: 0 22px 6px 74px; }
html[dir="rtl"] .stat-bars { margin: 0 74px 6px 22px; }
.stat-bars h4 { font-size: .96rem; margin-bottom: 14px; }
.stat-bar-row { margin-bottom: 16px; }
.stat-bar-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 6px; font-size: .86rem; font-weight: 700; }
.stat-bar-value { font-size: 1rem; }
.stat-bar-track { height: 10px; border-radius: 999px; background: var(--color-border); overflow: hidden; }
.stat-bar-fill { height: 100%; width: 0; border-radius: 999px; transition: width 1s cubic-bezier(.22,.9,.32,1); }
.stat-bar-fill-good { background: var(--color-primary); }
.stat-bar-fill-low { background: var(--color-accent); }
.stat-bar-row.is-visible .stat-bar-fill { width: var(--fill-width, 0%); }

/* ===================== Treatment steps ===================== */
.treatment-steps { list-style: none; padding: 0; margin: 18px 22px 4px 74px; display: flex; flex-direction: column; gap: 14px; counter-reset: tx; }
html[dir="rtl"] .treatment-steps { margin: 18px 74px 4px 22px; }
.treatment-steps li { display: flex; flex-direction: column; gap: 2px; padding-inline-start: 34px; position: relative; font-size: .9rem; }
.treatment-steps li::before {
  counter-increment: tx; content: counter(tx); position: absolute; inset-inline-start: 0; top: 1px;
  width: 24px; height: 24px; border-radius: 50%; background: var(--color-primary); color: #fff;
  font-size: .76rem; font-weight: 800; display: flex; align-items: center; justify-content: center;
}
.treatment-steps strong { color: var(--color-text); }
.treatment-steps span { color: var(--color-text-muted); }

/* ===================== Myths vs facts ===================== */
.myth-grid { grid-template-columns: repeat(3, 1fr); }
.myth-card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 22px; }
.myth-row { display: flex; align-items: flex-start; gap: 10px; }
.myth-row + .myth-row { margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--color-border); }
.myth-icon {
  flex-shrink: 0; width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: .8rem; font-weight: 800; margin-top: 1px;
}
.myth-icon-x { background: #F6E2DB; color: var(--color-accent-dark); }
.myth-icon-check { background: var(--color-primary-light); color: var(--color-primary-dark); }
.myth-label, .fact-label { display: block; font-size: .72rem; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; margin-bottom: 3px; }
.myth-label { color: var(--color-accent-dark); }
.fact-label { color: var(--color-primary-dark); }
.myth-card p { margin: 0; font-size: .9rem; color: var(--color-text); }

/* ===================== Prevention ===================== */
.prevention-grid {
  display: grid; grid-template-columns: 1.1fr .9fr; grid-template-rows: auto auto; gap: 22px;
  max-width: 1000px; margin: 0 auto;
}
.prevention-photo {
  position: relative; grid-row: 1 / 3; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-card); min-height: 320px;
}

/* ===================== Swaddle diagram ===================== */
.swaddle-diagram { background: var(--color-primary-light); padding: 24px; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.swaddle-toggle-buttons { background: #fff; margin-bottom: 18px; }
.swaddle-diagram svg { max-width: 200px; }
.swaddle-legs-incorrect, .swaddle-legs-correct { transition: opacity .3s ease; }
.swaddle-diagram.is-correct .swaddle-legs-incorrect { opacity: 0; }
.swaddle-diagram:not(.is-correct) .swaddle-legs-correct { opacity: 0; }
.swaddle-diagram-label { margin-top: 12px; font-weight: 800; font-size: .92rem; color: var(--color-accent-dark); }
.swaddle-diagram.is-correct .swaddle-diagram-label { color: var(--color-primary-dark); }

.prevention-checklist, .prevention-signs {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 26px;
}
.prevention-signs { background: var(--color-bg-alt); border-color: transparent; }
.prevention-signs-icon { display: inline-flex; margin-bottom: 10px; }
.prevention-checklist h3, .prevention-signs h3 { font-size: 1.08rem; margin-bottom: 14px; }
.check-list { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 11px; }
.check-list li { display: flex; align-items: flex-start; gap: 10px; font-size: .9rem; color: var(--color-text); }
.check-dot {
  flex-shrink: 0; width: 20px; height: 20px; border-radius: 50%; background: var(--color-primary-light); color: var(--color-primary-dark);
  display: flex; align-items: center; justify-content: center; font-size: .7rem; font-weight: 800; margin-top: 1px;
}

/* ===================== About ===================== */
.about-inner { display: grid; grid-template-columns: .5fr 1fr; gap: 48px; align-items: center; }
.about-circle {
  width: 220px; height: 220px; border-radius: 50%; background: var(--color-primary-light);
  display: flex; align-items: center; justify-content: center; margin-inline: auto;
}
.about-list { display: flex; flex-direction: column; gap: 10px; margin-top: 18px; }
.about-list li { color: var(--color-text); font-weight: 700; font-size: .95rem; }
.about-feature {
  display: flex; gap: 14px; margin-top: 26px; padding: 20px; background: var(--color-bg-alt);
  border-radius: var(--radius-md);
}
.about-feature-icon { flex-shrink: 0; width: 40px; height: 40px; border-radius: 10px; background: #fff; display: flex; align-items: center; justify-content: center; }
.about-feature strong { display: block; margin-bottom: 6px; color: var(--color-text); font-size: .96rem; }
.about-feature p { margin: 0; font-size: .88rem; }

/* ===================== Location ===================== */
.location-inner { display: grid; grid-template-columns: .85fr 1.15fr; gap: 44px; align-items: center; }
.location-line { font-size: 1.05rem; color: var(--color-text); font-weight: 700; }
.location-details { display: flex; flex-direction: column; gap: 14px; margin-top: 22px; }
.location-item { display: flex; align-items: center; gap: 12px; font-weight: 700; }
.location-item:hover { color: var(--color-primary-dark); }
.map-wrap { border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-card); height: 340px; }
.map-wrap iframe { width: 100%; height: 100%; border: 0; }

/* ===================== Contact form ===================== */
.contact-form { max-width: 720px; margin: 0 auto; background: #fff; padding: 36px; border-radius: var(--radius-lg); box-shadow: var(--shadow-card); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 800; font-size: .88rem; margin-bottom: 7px; color: var(--color-text); }
.field input, .field textarea {
  width: 100%; padding: 12px 16px; border-radius: var(--radius-sm); border: 1.5px solid var(--color-border);
  font-family: inherit; font-size: .96rem; background: var(--color-bg); color: var(--color-text);
  transition: border-color .18s ease, box-shadow .18s ease;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-primary-light); }
.form-status { margin-top: 14px; font-weight: 700; font-size: .92rem; min-height: 1.4em; }
.form-status.ok { color: var(--color-primary-dark); }
.form-status.err { color: #C0402B; }

/* ===================== Footer ===================== */
.site-footer { background: var(--color-primary); color: #DCE6DE; padding: 44px 0 0; }
.site-footer .brand-title { color: #fff; }
.site-footer .brand-sub, .site-footer .footer-contact a { color: #C6D3C8; }
.site-footer .footer-contact a:hover { color: #fff; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; padding-bottom: 30px; }
.footer-brand { display: flex; flex-direction: column; gap: 3px; }
.footer-contact { display: flex; gap: 20px; flex-wrap: wrap; font-weight: 700; }
.footer-contact a:hover { color: var(--color-primary-dark); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); text-align: center; padding: 16px 0; font-size: .84rem; color: #9FB09F; }

/* ===================== Floating buttons ===================== */
.whatsapp-fab {
  position: fixed; bottom: 24px; inset-inline-end: 24px; z-index: 90;
  width: 56px; height: 56px; border-radius: 50%; background: #25D366;
  display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-soft);
  transition: transform .18s ease;
}
.whatsapp-fab:hover { transform: scale(1.08); }
.back-to-top {
  position: fixed; bottom: 24px; inset-inline-start: 24px; z-index: 90;
  width: 46px; height: 46px; border-radius: 50%; background: #fff; color: var(--color-primary-dark);
  border: 1.5px solid var(--color-border); box-shadow: var(--shadow-card);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transform: translateY(10px);
  transition: opacity .25s ease, transform .25s ease;
}
.back-to-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }

/* ===================== Responsive ===================== */
@media (max-width: 900px) {
  .services-grid, .other-services-grid, .myth-grid { grid-template-columns: repeat(2, 1fr); }
  .about-inner, .location-inner { grid-template-columns: 1fr; }
  .about-art { order: -1; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px 16px; }
  .calculator { grid-template-columns: 1fr; }
  .calc-result { position: static; }
  .prevention-grid { grid-template-columns: 1fr; }
  .prevention-photo { grid-row: auto; min-height: 260px; }
}

@media (max-width: 760px) {
  .main-nav {
    position: fixed; top: var(--header-h); inset-inline: 0; background: #fff;
    flex-direction: column; align-items: stretch; gap: 0;
    box-shadow: 0 12px 24px -12px rgba(0,0,0,.15);
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: transform .22s ease, opacity .22s ease;
  }
  .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .main-nav .nav-link { padding: 16px 24px; border-bottom: 1px solid var(--color-border); }
  .nav-cta { border-radius: 0; text-align: center; }
  .menu-toggle { display: flex; }
  .brand-title { font-size: .88rem; }
  .brand-sub { font-size: .68rem; }
  .brand-mark svg { width: 34px; height: 34px; }
  .services-grid, .other-services-grid, .myth-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .header-call { display: none; }
  .calc-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
}