:root {
  --color-primary: #1E90FF;
  --color-primary-dark: #0f81f0;
  --color-secondary: #2C3E50;
  --color-text: #1f2937;
  --color-text-light: #6b7280;
  --color-bg: #ffffff;
  --color-bg-alt: #f9fafb;
  --color-border: #e5e7eb;
  --font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-size-base: 16px;
  --container-max: 1200px;
  --border-radius: 16px;
  --section-padding: 80px 0;
  --header-height: 72px;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: var(--font-size-base); scroll-behavior: smooth; scroll-padding-top: var(--header-height); }
body { font-family: var(--font-family); color: var(--color-text); line-height: 1.6; background: var(--color-bg); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--color-primary-dark); }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input, select, textarea { font: inherit; border: 1px solid var(--color-border); border-radius: var(--border-radius); padding: 12px 16px; width: 100%; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(37,99,235,.1); }

/* ===== Utilities ===== */
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 20px; }
.section-title { font-size: clamp(1.5rem, 4vw, 2.25rem); font-weight: 700; margin-bottom: 40px; text-align: center; }
.btn { display: inline-block; padding: 14px 28px; border-radius: var(--border-radius); font-weight: 600; font-size: 1rem; text-align: center; transition: background .2s, transform .1s; }
.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-dark); color: #fff; transform: translateY(-1px); }
.btn--secondary { background: transparent; color: var(--color-primary); border: 2px solid var(--color-primary); }
.btn--secondary:hover { background: var(--color-primary); color: #fff; }
.btn--outline { background: transparent; color: var(--color-text); border: 2px solid var(--color-border); }
.btn--outline:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ===== Header ===== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: var(--color-bg); height: var(--header-height); display: flex; align-items: center; transition: box-shadow .3s; }
.header--scrolled { box-shadow: 0 2px 20px rgba(0,0,0,.08); }
.header .container { display: flex; align-items: center; gap: 24px; width: 100%; }
.header__logo { display: flex; align-items: center; gap: 10px; color: var(--color-text); }
.header__logo-icon { color: var(--color-primary); flex-shrink: 0; }
.header__title { font-size: 1rem; font-weight: 700; white-space: nowrap; margin: 0; }
.header__nav ul { display: flex; gap: 20px; align-items: center; }
.header__nav a { color: var(--color-text); font-size: .9rem; font-weight: 500; }
.header__nav a:hover { color: var(--color-primary); }
.header__nav .header__phone { display: none; }
.header__contacts { margin-left: auto; text-align: right; }
.header__phone { color: var(--color-text); font-weight: 700; font-size: 1.05rem; display: block; }
.header__worktime { font-size: .8rem; color: var(--color-text-light); }
.header__cta { margin-left: 16px; padding: 10px 20px; font-size: .9rem; flex-shrink: 0; }
.header__burger { display: none; flex-direction: column; gap: 5px; width: 28px; margin-left: auto; }
.header__burger span { display: block; height: 3px; background: var(--color-text); border-radius: 2px; transition: transform .3s, opacity .3s; }

/* ===== Hero ===== */
.hero { padding: 120px 0 80px; background: var(--color-bg-alt); }
.hero .container { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero__title { font-size: clamp(1.75rem, 5vw, 2.75rem); font-weight: 800; line-height: 1.2; margin-bottom: 16px; }
.hero__subtitle { font-size: 1.1rem; color: var(--color-text-light); margin-bottom: 32px; line-height: 1.7; }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero__media img { border-radius: 12px; width: 100%; }

/* ===== Trust Bar ===== */
.trust-bar { padding: 40px 0; border-bottom: 1px solid var(--color-border); }
.trust-bar__list { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 20px; }
.trust-bar__item { text-align: center; flex: 1; min-width: 120px; }
.trust-bar__number { display: block; font-size: 1.75rem; font-weight: 800; color: var(--color-primary); }
.trust-bar__label { font-size: .85rem; color: var(--color-text-light); }

/* ===== Services ===== */
.services { padding: var(--section-padding); }
.services__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.services__card { padding: 32px 24px; border: 1px solid var(--color-border); border-radius: var(--border-radius); transition: box-shadow .3s, transform .2s; }
.services__card:hover { box-shadow: 0 8px 30px rgba(0,0,0,.08); transform: translateY(-4px); }
.services__icon { margin-bottom: 16px; }
.services__name { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.services__desc { font-size: .9rem; color: var(--color-text-light); margin-bottom: 16px; line-height: 1.6; }
.services__link { font-size: .9rem; font-weight: 600; color: var(--color-primary); }
.services__link:hover { color: var(--color-primary-dark); }

/* ===== Portfolio ===== */
.portfolio { padding: var(--section-padding); background: var(--color-bg-alt); }
.portfolio__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.portfolio__card { border-radius: var(--border-radius); overflow: hidden; cursor: pointer; transition: transform .2s; border: 1px solid var(--color-border); background: var(--color-bg); }
.portfolio__card:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(0,0,0,.1); }
.portfolio__card img { width: 100%; height: 240px; object-fit: cover; }
.portfolio__info { padding: 16px; }
.portfolio__info h3 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.portfolio__client { font-size: .85rem; color: var(--color-text-light); margin-bottom: 4px; }
.portfolio__result { font-size: .9rem; font-weight: 600; color: var(--color-primary); }

/* ===== Modal ===== */
.modal { display: none; position: fixed; inset: 0; z-index: 2000; align-items: center; justify-content: center; }
.modal--active { display: flex; }
.modal__overlay { position: absolute; inset: 0; background: rgba(0,0,0,.6); }
.modal__content { position: relative; background: var(--color-bg); border-radius: 12px; max-width: 700px; width: 90%; max-height: 90vh; overflow-y: auto; padding: 32px; z-index: 1; }
.modal__close { position: absolute; top: 12px; right: 16px; font-size: 1.5rem; color: var(--color-text-light); line-height: 1; }
.modal__close:hover { color: var(--color-text); }
.modal__img { width: 100%; border-radius: var(--border-radius); margin-bottom: 20px; }
.modal__title { font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; }
.modal__body p { margin-bottom: 8px; font-size: .95rem; }

/* ===== Calculator ===== */
.calculator { padding: var(--section-padding); }
.calculator__fields { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-bottom: 24px; }
.calculator__field label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 6px; }
.calculator__btn { margin-bottom: 24px; }
.calculator__result { background: var(--color-bg-alt); padding: 24px; border-radius: var(--border-radius); margin-bottom: 16px; }
.calculator__result-item { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; }
.calculator__result-item + .calculator__result-item { border-top: 1px solid var(--color-border); }
.calculator__price, .calculator__time { font-size: 1.25rem; color: var(--color-primary); font-weight: 700; }
.calculator__cta { display: none; }
.calculator__result.has-result ~ .calculator__cta { display: inline-block; }

/* ===== Steps ===== */
.steps { padding: var(--section-padding); background: var(--color-bg-alt); }
.steps__list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; }
.steps__item { padding: 24px 16px; text-align: center; }
.steps__number { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: 50%; background: var(--color-primary); color: #fff; font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; }
.steps__name { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.steps__desc { font-size: .85rem; color: var(--color-text-light); line-height: 1.5; }

/* ===== Partners ===== */
.partners { padding: var(--section-padding); }
.partners__grid { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 24px; }
.partners__item { flex: 0 0 auto; }
.partners__name { padding: 12px 24px; border: 1px solid var(--color-border); border-radius: var(--border-radius); font-size: .9rem; font-weight: 600; color: var(--color-text-light); transition: border-color .2s, color .2s; }
.partners__name:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ===== Reviews ===== */
.reviews { padding: var(--section-padding); background: var(--color-bg-alt); }
.reviews__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.reviews__card { background: var(--color-bg); padding: 28px; border-radius: var(--border-radius); border: 1px solid var(--color-border); }
.reviews__author { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.reviews__author img { width: 48px; height: 48px; border-radius: 50%; object-fit: cover; }
.reviews__author strong { display: block; font-size: .95rem; }
.reviews__author span { font-size: .8rem; color: var(--color-text-light); }
.reviews__text { font-size: .9rem; line-height: 1.6; color: var(--color-text); margin-bottom: 12px; }
.reviews__rating { color: var(--color-secondary); font-size: 1.1rem; }

/* ===== About ===== */
.about { padding: var(--section-padding); }
.about__content { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: center; }
.about__text p { margin-bottom: 16px; line-height: 1.7; }
.about__text .btn { margin-top: 8px; }
.about__image img { border-radius: 12px; width: 100%; }

/* ===== Team ===== */
.team { padding: var(--section-padding); background: var(--color-bg-alt); }
.team__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.team__card { text-align: center; }
.team__card img { width: 120px; height: 120px; border-radius: 50%; object-fit: cover; margin: 0 auto 12px; }
.team__card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.team__position { font-size: .85rem; color: var(--color-primary); font-weight: 600; margin-bottom: 4px; }
.team__bio { font-size: .8rem; color: var(--color-text-light); }

/* ===== Blog ===== */
.blog { padding: var(--section-padding); }
.blog__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 32px; }
.blog__card { padding: 24px; border: 1px solid var(--color-border); border-radius: var(--border-radius); }
.blog__date { font-size: .8rem; color: var(--color-text-light); }
.blog__card h3 { font-size: 1rem; font-weight: 700; margin: 8px 0; }
.blog__card h3 a { color: var(--color-text); }
.blog__card h3 a:hover { color: var(--color-primary); }
.blog__card p { font-size: .85rem; color: var(--color-text-light); line-height: 1.5; }
.blog .btn--outline { display: block; width: fit-content; margin: 0 auto; }

/* ===== Video ===== */
.video { padding: var(--section-padding); background: var(--color-bg-alt); }
.video__wrapper { max-width: 800px; margin: 0 auto; }
.video__facade { position: relative; cursor: pointer; border-radius: 12px; overflow: hidden; aspect-ratio: 16/9; }
.video__facade img { width: 100%; height: 100%; object-fit: cover; }
.video__play { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); opacity: .9; transition: opacity .2s; }
.video__facade:hover .video__play { opacity: 1; }
.video__facade iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: none; }

/* ===== FAQ ===== */
.faq { padding: var(--section-padding); }
.faq__list { max-width: 800px; margin: 0 auto; }
.faq__item { border-bottom: 1px solid var(--color-border); }
.faq__question { display: flex; justify-content: space-between; align-items: center; width: 100%; padding: 20px 0; font-size: 1rem; font-weight: 600; text-align: left; cursor: pointer; list-style: none; }
.faq__question::-webkit-details-marker { display: none; }
.faq__question::after { content: "+"; font-size: 1.5rem; color: var(--color-primary); transition: transform .3s; flex-shrink: 0; margin-left: 16px; }
.faq__item[open] .faq__question::after { transform: rotate(45deg); }
.faq__answer { padding: 0 0 20px; font-size: .9rem; line-height: 1.7; color: var(--color-text-light); }
.faq__answer p { margin-bottom: 8px; }

/* ===== Form ===== */
.form-section { padding: var(--section-padding); background: var(--color-bg-alt); }
.form { max-width: 700px; margin: 0 auto; }
.form__fields { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-bottom: 24px; }
.form__field label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 6px; }
.form__field--full { grid-column: 1 / -1; }
.form__notice { margin-top: 12px; font-size: .8rem; color: var(--color-text-light); }
.form__notice a { color: var(--color-primary); }

/* ===== Contacts ===== */
.contacts { padding: var(--section-padding); }
.contacts__grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 40px; }
.contacts__info address { font-style: normal; }
.contacts__info address p { margin-bottom: 12px; line-height: 1.6; }
.contacts__info a { color: var(--color-text); }
.contacts__info a:hover { color: var(--color-primary); }
.contacts__social { display: flex; gap: 12px; margin-top: 16px; }
.contacts__social a { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; background: var(--color-bg-alt); color: var(--color-text); transition: background .2s, color .2s; }
.contacts__social a:hover { background: var(--color-primary); color: #fff; }
.contacts__map { min-height: 350px; border-radius: var(--border-radius); background: var(--color-bg-alt); overflow: hidden; border: 1px solid var(--color-border); display: flex; align-items: center; justify-content: center; color: var(--color-text-light); font-size: .9rem; }

/* ===== Footer ===== */
.footer { padding: 48px 0 24px; background: var(--color-text); color: #fff; }
.footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
.footer__logo { color: #fff; display: inline-block; margin-bottom: 12px; font-size: 1.1rem; font-weight: 700; }
.footer__col p { font-size: .85rem; color: rgba(255,255,255,.7); line-height: 1.6; margin-bottom: 12px; }
.footer__col h3 { font-size: .9rem; font-weight: 700; margin-bottom: 12px; }
.footer__col ul li { margin-bottom: 8px; }
.footer__col a { color: rgba(255,255,255,.7); font-size: .85rem; }
.footer__col a:hover { color: #fff; }
.footer__social { display: flex; gap: 12px; margin-top: 12px; }
.footer__social a { padding: 6px 12px; border: 1px solid rgba(255,255,255,.3); border-radius: var(--border-radius); font-size: .8rem; color: rgba(255,255,255,.7); }
.footer__social a:hover { border-color: #fff; color: #fff; }
.footer__bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; font-size: .8rem; color: rgba(255,255,255,.5); }
.footer__bottom a { color: rgba(255,255,255,.5); }
.footer__bottom a:hover { color: #fff; }

/* ===== Page Hero (inner pages) ===== */
.page-hero { padding: 100px 0 48px; background: var(--color-bg-alt); border-bottom: 1px solid var(--color-border); }
.page-hero h1 { font-size: clamp(1.5rem, 4vw, 2.25rem); font-weight: 800; margin-bottom: 12px; }
.page-hero__subtitle { font-size: 1.1rem; color: var(--color-text-light); }
.breadcrumb { display: flex; gap: 8px; font-size: .85rem; color: var(--color-text-light); margin-bottom: 16px; }
.breadcrumb li:not(:last-child)::after { content: "→"; margin-left: 8px; }
.breadcrumb a { color: var(--color-text-light); }
.breadcrumb a:hover { color: var(--color-primary); }

/* ===== Privacy page ===== */
.privacy-content { padding: var(--section-padding); }
.privacy-text h2 { font-size: 1.25rem; font-weight: 700; margin: 32px 0 12px; }
.privacy-text h2:first-child { margin-top: 0; }
.privacy-text p { margin-bottom: 12px; line-height: 1.7; color: var(--color-text); }
.privacy-text ul { margin: 12px 0 12px 20px; list-style: disc; }
.privacy-text ul li { margin-bottom: 6px; line-height: 1.6; }
.privacy-text address { font-style: normal; margin-top: 12px; }
.privacy-text address p { margin-bottom: 6px; }

/* ===== Cookie Banner ===== */
.cookie-banner { position: fixed; bottom: 0; left: 0; right: 0; z-index: 3000; background: var(--color-text); color: #fff; padding: 16px 20px; box-shadow: 0 -4px 20px rgba(0,0,0,.15); transition: transform .3s ease; }
.cookie-banner--hidden { transform: translateY(100%); pointer-events: none; }
.cookie-banner__content { max-width: var(--container-max); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.cookie-banner__content p { font-size: .85rem; color: rgba(255,255,255,.85); line-height: 1.5; flex: 1; min-width: 200px; margin: 0; }
.cookie-banner__content a { color: #fff; text-decoration: underline; }
.cookie-banner__btn { padding: 10px 24px; font-size: .85rem; white-space: nowrap; flex-shrink: 0; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .services__grid { grid-template-columns: repeat(2, 1fr); }
    .portfolio__grid { grid-template-columns: repeat(2, 1fr); }
    .steps__list { grid-template-columns: repeat(3, 1fr); }
    .team__grid { grid-template-columns: repeat(2, 1fr); }
    .footer__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    :root { --section-padding: 60px 0; --header-height: 64px; }
    .header__nav, .header__contacts, .header__cta { display: none; }
    .header__burger { display: flex; }
    .header__title { font-size: .85rem; }
    .header__nav--active { display: block; position: absolute; top: var(--header-height); left: 0; right: 0; background: var(--color-bg); padding: 20px; box-shadow: 0 10px 30px rgba(0,0,0,.1); }
    .header__nav--active ul { flex-direction: column; gap: 16px; }
    .header__nav--active .header__phone { display: block; margin-top: 16px; font-weight: 700; font-size: 1.1rem; color: var(--color-text); }
    .hero { padding: 90px 0 60px; }
    .hero .container { grid-template-columns: 1fr; text-align: center; }
    .hero__media { order: -1; }
    .hero__media img { max-height: 250px; width: auto; margin: 0 auto; }
    .hero__actions { justify-content: center; }
    .services__grid { grid-template-columns: 1fr; }
    .portfolio__grid { grid-template-columns: 1fr; }
    .portfolio__card img { height: 200px; }
    .calculator__fields { grid-template-columns: 1fr; }
    .steps__list { grid-template-columns: 1fr; }
    .reviews__grid { grid-template-columns: 1fr; }
    .about__content { grid-template-columns: 1fr; }
    .team__grid { grid-template-columns: repeat(2, 1fr); }
    .blog__grid { grid-template-columns: 1fr; }
    .contacts__grid { grid-template-columns: 1fr; }
    .contacts__map { min-height: 250px; }
    .form__fields { grid-template-columns: 1fr; }
    .footer__grid { grid-template-columns: 1fr; }
    .footer__bottom { flex-direction: column; gap: 8px; text-align: center; }
    .trust-bar__list { justify-content: center; }
    .modal__content { padding: 20px; width: 95%; }
    .cookie-banner__content { flex-direction: column; text-align: center; gap: 12px; }
    .cookie-banner__btn { width: 100%; }
}

@media (max-width: 480px) {
    .trust-bar__list { flex-direction: column; align-items: center; }
    .team__grid { grid-template-columns: 1fr; }
    .hero__title { font-size: 1.5rem; }
    .hero__actions { flex-direction: column; align-items: stretch; }
    .hero__actions .btn { text-align: center; }
    .section-title { font-size: 1.3rem; margin-bottom: 24px; }
}