:root {
  --brand: #2944c8;
  --brand-dark: #17287f;
  --brand-soft: #e9edff;
  --accent: #f4b63d;
  --ink: #182238;
  --muted: #5f6a7d;
  --surface: #ffffff;
  --surface-alt: #f4f6fb;
  --line: #dce2f0;
  --radius: 18px;
  --shadow: 0 16px 40px rgba(25, 39, 91, .10);
  font-family: Inter, Roboto, Arial, sans-serif;
  color: var(--ink);
  scroll-behavior: smooth;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--surface); line-height: 1.5; }
img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.site-header {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 78px;
  padding: 5px max(28px, calc((100vw - 1240px) / 2));
  background: rgba(17, 31, 94, .52);
  border-bottom: 1px solid rgba(255, 255, 255, .22);
  box-shadow: 0 8px 24px rgba(8, 17, 60, .16);
  backdrop-filter: blur(12px);
}

.header-logo {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  padding: 5px 9px;
  background: rgba(255, 255, 255, .92);
  border: 1px solid rgba(255, 255, 255, .58);
  border-radius: 10px;
  box-shadow: 0 8px 18px rgba(7, 16, 58, .14);
  backdrop-filter: blur(4px);
}
.header-logo img { width: 220px; height: auto; background: transparent; }
.site-footer img { width: 250px; height: auto; background: transparent; }
.site-nav { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-left: auto; color: #fff; font-size: 15px; font-weight: 700; }
.site-nav a, .site-footer a { opacity: .9; transition: opacity .2s ease, color .2s ease; }
.site-nav a:hover, .site-footer a:hover { color: var(--accent); opacity: 1; }
.menu-toggle { display: none; }

.hero {
  display: flex;
  align-items: center;
  min-height: 700px;
  padding: 150px max(28px, calc((100vw - 1240px) / 2)) 72px;
  background: linear-gradient(90deg, rgba(15, 26, 82, .76) 0%, rgba(15, 26, 82, .56) 39%, rgba(15, 26, 82, .16) 72%), url("../images/hero.jpg") center / cover no-repeat;
}

.hero-content {
  width: min(560px, 100%);
  padding: 38px;
  color: #fff;
  text-align: center;
  background: rgba(17, 31, 94, .42);
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 24px;
  box-shadow: 0 18px 45px rgba(7, 16, 58, .22);
  backdrop-filter: blur(4px);
}

.hero-brand { width: min(420px, 100%); margin: 0 auto 28px; }
h1 { margin: 0 0 24px; color: #fff; font-size: clamp(30px, 3.2vw, 46px); line-height: 1.13; font-weight: 800; letter-spacing: -.03em; }
.phone, .cta, .slide-order-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 13px 24px;
  color: #182238;
  font-size: 17px;
  font-weight: 800;
  text-align: center;
  background: var(--accent);
  border-radius: 10px;
  box-shadow: 0 9px 20px rgba(0, 0, 0, .16);
  transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
}
.phone:hover, .cta:hover, .slide-order-button:hover { background: #ffc95f; box-shadow: 0 12px 28px rgba(0, 0, 0, .2); transform: translateY(-2px); }
.phone { width: 100%; margin-bottom: 16px; font-size: clamp(25px, 2.8vw, 35px); letter-spacing: .01em; }
.guarantee { margin: 0 0 25px; font-size: clamp(19px, 2.1vw, 26px); line-height: 1.28; }
.cta { max-width: 490px; }

.promo-slide { position: relative; min-height: 520px; background: center / cover no-repeat; }
.slide-order::after { position: absolute; inset: 0; content: ""; background: linear-gradient(90deg, rgba(7, 16, 49, .72), rgba(7, 16, 49, .27) 53%, rgba(7, 16, 49, .06)); pointer-events: none; }
.slide-order { background-image: url("../images/promo-walls-v3.jpg"); }
.slide-plaster { background-image: url("../images/slide-plaster.jpg"); }
.slide-finish { background-image: url("../images/slide-finish.jpg"); }
.promo-content { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; min-height: 520px; width: min(510px, calc(100% - 56px)); margin-left: max(28px, calc((100vw - 1180px) / 2)); color: #fff; }
.promo-kicker { margin: 0 0 14px; color: var(--accent); font-size: 15px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.promo-content h2 { margin: 0 0 16px; color: #fff; font-size: clamp(36px, 4.4vw, 58px); line-height: 1.03; letter-spacing: -.035em; }
.promo-content > p:not(.promo-kicker) { max-width: 430px; margin: 0 0 28px; color: rgba(255, 255, 255, .88); font-size: 19px; }
.slide-order-button { position: static; min-width: 190px; transform: none; }
.slide-order-button:hover { transform: translateY(-2px); }

.section { padding: 84px max(28px, calc((100vw - 1180px) / 2)); }
.section h2 { max-width: 920px; margin: 0 auto 38px; color: var(--brand-dark); font-size: clamp(27px, 3vw, 40px); line-height: 1.15; font-weight: 800; letter-spacing: -.02em; text-align: center; text-transform: none; }
.section h2::after { display: block; width: 58px; height: 4px; margin: 18px auto 0; content: ""; background: var(--accent); border-radius: 99px; }
.section p { color: var(--muted); }

.advantage-intro {
  text-align: center;
  background-image: linear-gradient(rgba(255, 255, 255, .20), rgba(255, 255, 255, .20)), url("../images/section-advantages-bg-v2.jpg");
  background-position: center;
  background-size: cover;
}
.advantage-intro p { margin: 8px 0; font-size: 21px; }
.advantage-intro .callout { color: var(--brand); font-size: 30px; font-weight: 800; letter-spacing: .05em; }
.advantage-intro h3 { margin: 20px 0 0; color: var(--ink); font-size: 25px; }
.advantages, .prices, .faq, .reviews { background: var(--surface-alt); }
.advantages {
  background-image: linear-gradient(rgba(248, 249, 253, .22), rgba(248, 249, 253, .22)), url("../images/section-advantages-bg-v2.jpg");
  background-position: center;
  background-size: cover;
}
.advantages-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.advantages article, .service-grid article {
  height: 100%;
  padding: 28px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.advantages article { border-top: 4px solid var(--brand); }
.advantages strong, .advantages span { display: block; }
.advantages strong { margin-bottom: 12px; font-size: 19px; line-height: 1.3; }
.advantages span { color: var(--muted); }
.advantages .icon { margin-bottom: 18px; color: var(--brand); font-size: 34px; font-weight: 800; line-height: 1; }

.seo-text > p { max-width: 940px; margin: 0 auto 34px; font-size: 18px; text-align: center; }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.service-grid article { position: relative; overflow: hidden; }
.service-grid article::before { display: block; width: 36px; height: 36px; margin-bottom: 18px; content: ""; background: var(--brand-soft); border-radius: 50%; }
.service-grid h3 { margin: 0 0 10px; color: var(--brand-dark); font-size: 21px; line-height: 1.25; }
.service-grid p { margin: 0; }

.price-card { max-width: 710px; margin: auto; padding: 42px; text-align: center; background: var(--surface); border: 1px solid var(--line); border-radius: 22px; box-shadow: var(--shadow); }
.price-label { margin: 0; font-size: 20px; font-weight: 700; }
.price { margin: 10px 0 15px; color: var(--brand); font-size: clamp(40px, 5vw, 58px); font-weight: 800; line-height: 1; }
.price-card .cta { margin-top: 25px; }

.process ol { display: grid; max-width: 920px; margin: 0 auto; padding: 0; list-style: none; counter-reset: process; }
.process li { position: relative; min-height: 74px; margin: 0; padding: 0 0 23px 78px; color: var(--muted); counter-increment: process; }
.process li::before { position: absolute; top: -2px; left: 0; display: grid; place-items: center; width: 48px; height: 48px; color: #fff; content: counter(process); font-weight: 800; background: var(--brand); border-radius: 50%; }
.process li:not(:last-child)::after { position: absolute; top: 48px; bottom: 0; left: 23px; width: 2px; content: ""; background: var(--brand-soft); }
.process li strong { color: var(--ink); }

.works { background: #fff; }
.work-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.work-grid img { width: 100%; height: 310px; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); transition: transform .25s ease; }
.work-grid img:hover { transform: translateY(-5px); }

.reviews-content { display: grid; grid-template-columns: minmax(0, 1fr) minmax(310px, .9fr); align-items: start; gap: 26px; }
.reviews img { width: 100%; max-height: 610px; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); }
.review-videos { display: grid; gap: 16px; }
.review-videos video { width: 100%; max-height: 190px; background: #11182d; border-radius: 12px; box-shadow: var(--shadow); }

.calculation { color: #fff; text-align: center; background: linear-gradient(120deg, var(--brand-dark), var(--brand)); }
.calculation h2, .calculation p { color: #fff; }
.calculation p { max-width: 640px; margin: 0 auto; font-size: 19px; }
.calculation .cta { width: min(360px, 100%); margin-top: 28px; }
.faq details { max-width: 900px; margin: 0 auto 12px; padding: 20px 24px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 6px 18px rgba(25, 39, 91, .05); }
.faq summary { position: relative; padding-right: 28px; cursor: pointer; color: var(--brand-dark); font-size: 18px; font-weight: 800; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { position: absolute; right: 2px; content: "+"; color: var(--brand); font-size: 26px; line-height: .75; }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: 15px 0 2px; }
.geography, .vacancies { text-align: center; }
.geography p, .vacancies p { max-width: 850px; margin: auto; font-size: 18px; }

/* Фотографические фоны для смысловых блоков: текст остаётся на светлой подложке. */
.seo-text, .process, .faq {
  background-image: linear-gradient(rgba(248, 249, 253, .64), rgba(248, 249, 253, .64)), url("../images/section-plaster-bg-v2.jpg");
  background-position: center;
  background-size: cover;
}
.prices, .works, .reviews {
  background-image: linear-gradient(rgba(248, 249, 253, .54), rgba(248, 249, 253, .54)), url("../images/section-interior-bg-v2.jpg");
  background-position: center;
  background-size: cover;
}
.geography, .vacancies {
  background-image: linear-gradient(90deg, rgba(15, 29, 88, .72), rgba(15, 29, 88, .46)), url("../images/section-crimea-bg-v2.jpg");
  background-position: center;
  background-size: cover;
}
.geography h2, .vacancies h2, .geography p, .vacancies p { color: #fff; }
.geography h2::after, .vacancies h2::after { background: var(--accent); }
.price-card, .faq details, .advantages article, .service-grid article { background-color: rgba(255, 255, 255, .94); }
.calculation {
  background-image: linear-gradient(120deg, rgba(23, 40, 127, .94), rgba(41, 68, 200, .84)), url("../images/section-crimea-bg-v2.jpg");
  background-position: center;
  background-size: cover;
}

.site-footer { display: flex; flex-wrap: wrap; align-items: center; gap: 28px; padding: 38px max(28px, calc((100vw - 1240px) / 2)); color: var(--ink); background: #edf0f8; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-left: auto; font-size: 15px; }
.site-footer small { width: 100%; padding-top: 20px; color: var(--muted); border-top: 1px solid var(--line); }

@media (max-width: 900px) {
  .site-header { min-height: 78px; padding: 5px 20px; }
  .header-logo img { width: 185px; }
  .menu-toggle { display: block; margin-left: auto; padding: 4px; color: #fff; font-size: 29px; background: transparent; border: 0; cursor: pointer; }
  .site-nav { position: absolute; top: 78px; right: 0; left: 0; display: none; flex-direction: column; gap: 0; margin: 0; padding: 10px 20px 20px; color: #fff; background: rgba(17, 31, 94, .94); box-shadow: 0 14px 18px rgba(13, 22, 76, .2); }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 11px 0; }
  .hero { min-height: 640px; padding: 48px 20px; }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .service-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .section { padding: 60px 20px; }
  .hero { padding-top: 118px; }
  .hero-content { padding: 28px 18px; border-radius: var(--radius); }
  .hero-brand { margin-bottom: 22px; }
  .guarantee { font-size: 19px; }
  .promo-slide { min-height: 360px; }
  .promo-content { min-height: 360px; width: calc(100% - 40px); margin-left: 20px; }
  .promo-content > p:not(.promo-kicker) { font-size: 17px; }
  .advantages-grid, .work-grid, .reviews-content { grid-template-columns: 1fr; }
  .advantages article, .service-grid article { padding: 24px 20px; }
  .price-card { padding: 32px 20px; }
  .work-grid img { height: 255px; }
  .reviews img { max-height: none; }
  .process li { padding-left: 64px; }
  .site-footer { padding: 30px 20px; }
  .site-footer nav { width: 100%; margin-left: 0; }
}