:root {
  --ink: #102f44;
  --muted: #607789;
  --paper: #ffffff;
  --ice: #f4fbff;
  --mist: #eaf7ff;
  --blue: #178bd3;
  --blue-deep: #075d9b;
  --aqua: #68d7ff;
  --line: rgba(122, 180, 214, .28);
  --glass: rgba(255, 255, 255, .72);
  --shadow: 0 28px 80px rgba(21, 107, 162, .16);
  --soft-shadow: 0 18px 46px rgba(16, 47, 68, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  line-height: 1.55;
  overflow-x: hidden;
}
img { display: block; width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { letter-spacing: 0; line-height: 1.04; }
h1 { margin-bottom: 22px; font-size: clamp(42px, 6.5vw, 82px); }
h2 { margin-bottom: 16px; font-size: clamp(30px, 4vw, 52px); }
h3 { margin-bottom: 10px; font-size: clamp(20px, 2vw, 24px); }
ul { margin: 0; padding: 0; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 14px clamp(18px, 4vw, 54px);
  background: rgba(255,255,255,.78);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: max-content; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, var(--blue-deep), var(--aqua));
  font-weight: 900;
  box-shadow: 0 14px 26px rgba(23, 139, 211, .22);
}
.brand strong, .brand small { display: block; }
.brand strong { font-size: 18px; line-height: 1.1; }
.brand small { color: var(--muted); font-size: 12px; }
.nav { display: flex; gap: 24px; color: var(--muted); font-size: 15px; }
.nav a:hover { color: var(--blue-deep); }

.top-cta, .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  white-space: nowrap;
}
.top-cta, .button.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--blue-deep), var(--blue) 58%, var(--aqua));
  box-shadow: 0 18px 34px rgba(23, 139, 211, .26);
}
.button.secondary {
  color: var(--ink);
  background: rgba(255,255,255,.74);
  border: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(360px, 1.05fr);
  align-items: center;
  gap: clamp(28px, 5vw, 76px);
  min-height: calc(100vh - 76px);
  padding: clamp(34px, 6vw, 86px) clamp(18px, 5vw, 72px) 48px;
  background:
    radial-gradient(circle at 82% 18%, rgba(104,215,255,.24), transparent 28%),
    linear-gradient(125deg, #f7fcff 0%, #e9f7ff 46%, #fff 100%);
}
.hero-copy { max-width: 680px; }
.eyebrow {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.lead { max-width: 620px; color: #466579; font-size: clamp(18px, 2vw, 22px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.price-line {
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  margin-top: 22px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--glass);
  box-shadow: var(--soft-shadow);
  backdrop-filter: blur(16px);
}
.price-line span, .order-price span { color: var(--muted); font-size: 14px; font-weight: 800; }
.price-line strong, .order-price strong { color: var(--blue-deep); font-size: clamp(27px, 3vw, 36px); line-height: 1; }
.trust-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.trust-row span {
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #31566e;
  background: rgba(255,255,255,.72);
  font-size: 14px;
  font-weight: 800;
}
.hero-media, .image-card, .lab-visual, .comparison article, .final-cta img {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255,255,255,.66);
  box-shadow: var(--shadow);
}
.hero-media img { aspect-ratio: 1 / 1.06; object-fit: cover; }

.section-pad { padding: clamp(62px, 8vw, 112px) clamp(18px, 5vw, 72px); }
.section-head { max-width: 840px; margin: 0 auto 36px; text-align: center; }
.section-head p:not(.eyebrow) { color: var(--muted); font-size: 18px; }
.cards { display: grid; gap: 18px; max-width: 1180px; margin: 0 auto; }
.cards.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card, .review, .feature-grid article, .faq-list details {
  min-height: 100%;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255,255,255,.78);
  box-shadow: var(--soft-shadow);
  backdrop-filter: blur(16px);
}
.card p, .review p, .feature-grid p, .advantage-panel p, .composition-copy p, .order-card p, .faq-list p, .apartment p, .lifestyle p, .final-cta p { color: var(--muted); }
.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 20px;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--aqua));
  font-weight: 900;
}
.split, .composition, .apartment, .final-cta, .advantage-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 1fr);
  gap: clamp(26px, 5vw, 64px);
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
}
.problem, .before-after, .faq { background: linear-gradient(180deg, #fff, var(--ice)); }
.problem-list { margin: 0; }
.image-card img, .lab-visual img, .comparison img, .final-cta img { aspect-ratio: 4 / 3; object-fit: cover; }

.how, .composition, .order { background: linear-gradient(135deg, #f5fbff, #fff); }
.advantage { background: linear-gradient(135deg, #e8f7ff, #ffffff); }
.advantage-panel { padding: clamp(28px, 5vw, 54px); border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.74); box-shadow: var(--shadow); backdrop-filter: blur(18px); }
.flow { display: grid; gap: 14px; }
.flow span {
  position: relative;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(135deg, #fff, #eaf8ff);
  color: var(--blue-deep);
  font-weight: 900;
  box-shadow: var(--soft-shadow);
}
.flow span:not(:last-child)::after { content: "↓"; position: absolute; right: 24px; bottom: -25px; color: var(--blue); font-size: 22px; }
.check-list { display: grid; gap: 11px; margin: 24px 0 0; list-style: none; }
.check-list li { position: relative; padding-left: 30px; color: #476375; }
.check-list li::before { content: ""; position: absolute; left: 0; top: .45em; width: 14px; height: 14px; border-radius: 50%; background: var(--blue); box-shadow: inset 0 0 0 4px #dff4ff; }

.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; max-width: 1180px; margin: 0 auto; }
.feature-grid article span { display: block; margin-bottom: 16px; font-size: 30px; }
.lab-visual { position: relative; }
.molecule { position: absolute; width: 74px; height: 74px; border: 1px solid rgba(104,215,255,.52); border-radius: 50%; background: rgba(255,255,255,.34); backdrop-filter: blur(10px); }
.molecule::before, .molecule::after { content: ""; position: absolute; width: 18px; height: 18px; border-radius: 50%; background: rgba(23,139,211,.34); }
.molecule::before { left: 12px; top: 18px; }
.molecule::after { right: 14px; bottom: 16px; }
.m1 { right: 8%; top: 8%; } .m2 { left: 8%; bottom: 12%; transform: scale(.76); } .m3 { right: 18%; bottom: 8%; transform: scale(.56); }

.comparison { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; max-width: 1120px; margin: 0 auto; }
.comparison article { background: #fff; }
.comparison h3, .comparison ul { padding-left: 24px; padding-right: 24px; }
.comparison h3 { margin-top: 22px; }
.comparison ul { display: grid; gap: 8px; padding-bottom: 24px; color: var(--muted); }
.lifestyle { position: relative; min-height: 520px; display: grid; align-items: end; padding: clamp(32px, 5vw, 72px); overflow: hidden; }
.lifestyle img { position: absolute; inset: 0; height: 100%; object-fit: cover; }
.lifestyle::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(255,255,255,.9), rgba(255,255,255,.2)); }
.lifestyle div { position: relative; z-index: 1; max-width: 560px; }
.reviews-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.stars { margin-bottom: 14px; color: #f3a23b; letter-spacing: .06em; }
.review strong { display: block; color: var(--ink); }
.faq-list { display: grid; gap: 12px; max-width: 900px; margin: 0 auto; }
.faq-list summary { cursor: pointer; font-weight: 900; font-size: 18px; }
.faq-list p { margin: 12px 0 0; }

.final-cta { background: linear-gradient(135deg, #f5fbff, #ffffff); }
.final-cta .button { margin-top: 24px; }
.order-card { display: grid; grid-template-columns: minmax(0, .95fr) minmax(320px, .75fr); gap: clamp(26px, 5vw, 56px); max-width: 1080px; margin: 0 auto; padding: clamp(28px, 5vw, 52px); border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.8); box-shadow: var(--shadow); backdrop-filter: blur(18px); }
.order-price { display: grid; gap: 6px; width: fit-content; margin: 0 0 18px; padding: 16px 18px; border-radius: 8px; background: #e6f7ff; border: 1px solid var(--line); }
.promo-ribbon {
  display: inline-flex;
  width: fit-content;
  margin-bottom: 14px;
  padding: 8px 13px;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, var(--blue-deep), var(--blue));
  font-size: 14px;
  font-weight: 900;
  box-shadow: 0 14px 28px rgba(23,139,211,.22);
}
.pack-selector {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.pack-option {
  position: relative;
  display: grid;
  gap: 5px;
  min-height: 132px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: rgba(255,255,255,.86);
  box-shadow: var(--soft-shadow);
  text-align: left;
  font: inherit;
  cursor: pointer;
}
.pack-option span { font-size: 22px; font-weight: 900; }
.pack-option strong { color: var(--blue-deep); font-size: 24px; line-height: 1; }
.pack-option small { color: var(--muted); font-weight: 800; }
.pack-option em {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 4px 9px;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, #0a6ead, var(--aqua));
  font-size: 11px;
  font-style: normal;
  font-weight: 900;
  text-transform: uppercase;
}
.pack-option.is-selected {
  border-color: rgba(23,139,211,.72);
  background: linear-gradient(135deg, #fff, #e8f7ff);
  box-shadow: 0 18px 42px rgba(23,139,211,.18);
}
.pack-option.is-selected::after {
  content: "✓";
  position: absolute;
  right: 14px;
  bottom: 12px;
  display: grid;
  place-items: center;
  width: 25px;
  height: 25px;
  border-radius: 50%;
  color: #fff;
  background: var(--blue);
  font-weight: 900;
}
.form { display: grid; gap: 16px; padding: 24px; border-radius: 8px; background: #f4fbff; border: 1px solid var(--line); }
.form label { display: grid; gap: 7px; color: var(--ink); font-weight: 800; }
.form input { width: 100%; min-height: 52px; padding: 0 16px; border: 1px solid rgba(122,180,214,.55); border-radius: 8px; color: var(--ink); background: #fff; font: inherit; }
.form input:focus { outline: 3px solid rgba(23,139,211,.16); border-color: var(--blue); }
.form-note { margin: 0; font-size: 13px; }
.footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding: 26px clamp(18px, 5vw, 72px); color: #46616a; background: #eaf6fc; font-size: 14px; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

.order-result { display: grid; place-items: center; min-height: 100vh; padding: 24px; background: var(--ice); }
.order-result-card { width: min(620px, 100%); padding: clamp(28px, 6vw, 54px); border: 1px solid var(--line); border-radius: 8px; background: #fff; box-shadow: var(--shadow); }
.order-result-card h1 { font-size: clamp(34px, 6vw, 58px); }
.order-summary { display: grid; gap: 6px; margin: 24px 0; padding: 18px; border-radius: 8px; background: #e6f7ff; border: 1px solid var(--line); }
.order-summary span { color: var(--muted); }
.order-summary strong { color: var(--blue-deep); font-size: 24px; }

@media (max-width: 980px) {
  .nav { display: none; }
  .hero, .split, .composition, .apartment, .final-cta, .advantage-panel, .order-card { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .cards.three, .feature-grid, .reviews-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .topbar { padding: 12px 14px; }
  .brand small { display: none; }
  .top-cta { min-height: 42px; padding: 0 14px; font-size: 14px; }
  .hero { padding-top: 28px; }
  .hero-actions, .hero-actions .button, .button { width: 100%; }
  .price-line { display: grid; width: 100%; gap: 6px; }
  .cards.three, .feature-grid, .reviews-grid, .comparison { grid-template-columns: 1fr; }
  .card, .review, .feature-grid article, .form, .faq-list details { padding: 22px; }
  .order-card, .advantage-panel { padding: 22px; }
  .pack-selector { grid-template-columns: 1fr; }
  .lifestyle { min-height: 460px; }
  .lifestyle::after { background: linear-gradient(180deg, rgba(255,255,255,.2), rgba(255,255,255,.92)); }
}