:root {
  --white: #ffffff;
  --sand: #fff8e8;
  --sky: #d9f4ff;
  --sea: #19a7ce;
  --deep: #06364f;
  --navy: #082b42;
  --gold: #f7c948;
  --muted: #5d7482;
  --shadow: 0 18px 45px rgba(8, 43, 66, 0.14);
  --radius: 24px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--deep);
  background: linear-gradient(180deg, #f7fdff 0%, var(--white) 45%, #f9fbfc 100%);
  line-height: 1.6;
}
img { max-width: 100%; display: block; object-fit: cover; }
a { color: inherit; text-decoration: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(25, 167, 206, 0.14);
}
.navbar {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  font-weight: 900;
  font-size: clamp(1.25rem, 2vw, 1.65rem);
  letter-spacing: -0.04em;
  color: var(--navy);
}
.logo::after { content: ".pt"; color: var(--sea); }
.nav-menu { display: flex; align-items: center; gap: 18px; margin: 0; padding: 0; list-style: none; font-weight: 700; font-size: 0.94rem; }
.nav-menu a { padding: 10px 4px; color: var(--deep); }
.nav-menu a:hover { color: var(--sea); }
.menu-toggle { display: none; border: 0; background: var(--sky); border-radius: 14px; padding: 10px; cursor: pointer; }
.menu-toggle span { display: block; width: 24px; height: 3px; margin: 4px; background: var(--deep); border-radius: 4px; }

.hero-slider { position: relative; height: min(720px, calc(100vh - 78px)); min-height: 560px; overflow: hidden; background: var(--navy); }
.slide { position: absolute; inset: 0; opacity: 0; transition: opacity 650ms ease; }
.slide.active { opacity: 1; z-index: 1; }
.slide img { width: 100%; height: 100%; filter: saturate(1.04); }
.slide::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(6, 54, 79, 0.84), rgba(6, 54, 79, 0.42), rgba(6, 54, 79, 0.14)); }
.slide-content { position: absolute; z-index: 2; top: 50%; left: max(24px, calc((100vw - 1180px) / 2)); transform: translateY(-50%); width: min(660px, calc(100% - 48px)); color: var(--white); }
.slide-content h1, .slide-content h2 { font-size: clamp(2.5rem, 6vw, 5.5rem); line-height: 0.95; letter-spacing: -0.07em; margin: 8px 0 20px; }
.slide-content p:not(.eyebrow) { font-size: clamp(1.05rem, 2vw, 1.35rem); color: #e8f8ff; max-width: 560px; }
.eyebrow { margin: 0 0 8px; color: var(--gold); text-transform: uppercase; letter-spacing: 0.16em; font-size: 0.78rem; font-weight: 900; }
.btn { display: inline-flex; align-items: center; justify-content: center; border-radius: 999px; font-weight: 900; transition: transform 180ms ease, box-shadow 180ms ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { margin-top: 18px; padding: 14px 24px; background: var(--gold); color: var(--navy); box-shadow: 0 12px 30px rgba(247, 201, 72, 0.28); }
.btn-small { margin-top: 8px; padding: 9px 15px; background: var(--sky); color: var(--deep); font-size: 0.9rem; }
.slider-btn { position: absolute; top: 50%; z-index: 3; transform: translateY(-50%); width: 46px; height: 46px; border: 0; border-radius: 50%; background: rgba(255,255,255,0.86); color: var(--deep); font-size: 1.4rem; cursor: pointer; }
.prev { left: 18px; } .next { right: 18px; }
.slider-dots { position: absolute; z-index: 3; left: 50%; bottom: 28px; transform: translateX(-50%); display: flex; gap: 10px; }
.slider-dots button { width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--white); background: transparent; cursor: pointer; }
.slider-dots button.active { background: var(--gold); border-color: var(--gold); }

.section { width: min(1180px, calc(100% - 32px)); margin: 0 auto; padding: 86px 0; }
.section-heading { max-width: 760px; margin: 0 auto 38px; text-align: center; }
h1, h2, h3 { color: var(--navy); line-height: 1.1; }
.section-heading h2, .about-card h2, .cta-section h2, .page-hero h1 { margin: 0 0 14px; font-size: clamp(2rem, 4vw, 3.6rem); letter-spacing: -0.055em; }
.section-heading p, .about-card p, .page-hero p { color: var(--muted); }
.ad-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.ad-card, .category-ad { background: var(--white); border: 1px solid rgba(25, 167, 206, 0.16); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.ad-card img { width: 100%; height: 168px; background: linear-gradient(135deg, var(--sky), #eefbff); }
.ad-card div { padding: 18px; }
.ad-card h3 { margin: 0 0 4px; }
.ad-card p { margin: 0; color: var(--muted); }
.premium-ad { border: 2px solid var(--gold); position: relative; }
.premium-ad::before { content: "Premium"; position: absolute; top: 14px; right: 14px; z-index: 2; background: var(--gold); color: var(--navy); padding: 5px 10px; border-radius: 999px; font-weight: 900; font-size: 0.76rem; }
.section-blue { width: 100%; max-width: none; background: linear-gradient(135deg, #e8f9ff, #ffffff); padding-left: max(16px, calc((100vw - 1180px) / 2)); padding-right: max(16px, calc((100vw - 1180px) / 2)); }
.ad-formats { display: grid; grid-template-columns: 1.3fr 1fr 0.75fr; gap: 24px; align-items: stretch; }
.ad-banner-large, .ad-horizontal, .ad-vertical { border: 2px dashed rgba(25, 167, 206, 0.45); border-radius: var(--radius); background: var(--white); padding: 16px; box-shadow: var(--shadow); min-height: 260px; }
.ad-banner-large span, .ad-horizontal span, .ad-vertical span { display: inline-block; margin-bottom: 12px; font-weight: 900; color: var(--sea); }
.ad-banner-large img, .ad-horizontal img, .ad-vertical img { width: 100%; height: calc(100% - 38px); min-height: 200px; border-radius: 16px; background: var(--sky); }
.ad-vertical { min-height: 380px; }
.about-section { display: grid; place-items: center; }
.about-card { max-width: 880px; padding: clamp(28px, 5vw, 58px); background: var(--sand); border-radius: 32px; box-shadow: var(--shadow); border: 1px solid rgba(247, 201, 72, 0.35); }
.photo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.photo-grid img { width: 100%; height: 250px; border-radius: 22px; background: var(--sky); box-shadow: var(--shadow); }
.cta-section { text-align: center; padding: 86px 20px; background: linear-gradient(135deg, var(--navy), #0b5f80); color: var(--white); }
.cta-section h2 { color: var(--white); }
.cta-section p { color: #d7f5ff; }
.site-footer { padding: 34px 20px; text-align: center; color: #d7f5ff; background: var(--navy); }
.site-footer p { margin: 6px 0; }

.page-hero { padding: 138px 20px 78px; text-align: center; background: radial-gradient(circle at top, var(--sky), #ffffff 65%); }
.page-hero p { max-width: 740px; margin-left: auto; margin-right: auto; }
.categories-wrapper { padding-top: 60px; }
.category-list { display: grid; gap: 28px; }
.category-block { padding: 24px; border-radius: 30px; background: rgba(255,255,255,0.75); border: 1px solid rgba(25, 167, 206, 0.14); }
.category-block h2 { margin-top: 0; }
.category-ads { display: grid; grid-template-columns: 1.35fr 0.75fr 0.6fr; gap: 18px; }
.category-ad { padding: 14px; }
.category-ad.ad-horizontal { display: grid; grid-template-columns: 180px 1fr; gap: 16px; align-items: center; min-height: 150px; }
.category-ad.ad-horizontal img { width: 100%; height: 122px; border-radius: 16px; background: var(--sky); }
.category-ad.ad-vertical img { width: 100%; height: 190px; border-radius: 16px; background: var(--sky); }
.small-banner { display: grid; place-items: center; min-height: 150px; border-style: dashed; color: var(--sea); font-weight: 900; text-align: center; }

@media (max-width: 960px) {
  .menu-toggle { display: block; }
  .nav-menu { position: absolute; top: 78px; left: 16px; right: 16px; display: none; flex-direction: column; align-items: stretch; gap: 4px; padding: 18px; background: var(--white); border-radius: 22px; box-shadow: var(--shadow); }
  .nav-menu.open { display: flex; }
  .ad-grid, .photo-grid { grid-template-columns: repeat(2, 1fr); }
  .ad-formats, .category-ads { grid-template-columns: 1fr; }
  .category-ad.ad-horizontal { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .hero-slider { min-height: 620px; }
  .slider-btn { top: auto; bottom: 24px; }
  .prev { left: 20px; } .next { right: 20px; }
  .slider-dots { bottom: 86px; }
  .ad-grid, .photo-grid { grid-template-columns: 1fr; }
  .section { padding: 62px 0; }
  .photo-grid img { height: 220px; }
}