:root {
  --navy: #08243d;
  --blue: #126ba5;
  --aqua: #17bfd3;
  --aqua-soft: #e8fbfe;
  --sky: #f3fbff;
  --white: #ffffff;
  --ink: #13283a;
  --muted: #5e7282;
  --line: #d9edf5;
  --shadow: 0 18px 50px rgba(8, 36, 61, 0.13);
  --radius: 8px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button, a {
  -webkit-tap-highlight-color: transparent;
}

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.section {
  padding: 80px 0;
}

.alt {
  background: linear-gradient(180deg, var(--sky), #ffffff);
}

.top-bar {
  background: var(--navy);
  color: var(--white);
  text-align: center;
  padding: 10px 16px;
  font-weight: 700;
  font-size: 14px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px max(16px, calc((100vw - 1120px) / 2));
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: var(--navy);
}

.brand-mark {
  width: 34px;
  height: 20px;
  border-radius: 100px;
  background: linear-gradient(90deg, var(--aqua), var(--blue));
  clip-path: polygon(0 52%, 18% 27%, 38% 48%, 59% 70%, 82% 38%, 100% 45%, 100% 73%, 78% 68%, 58% 90%, 34% 65%, 14% 55%, 0 76%);
}

nav {
  display: flex;
  gap: 24px;
  color: var(--muted);
  font-weight: 700;
  font-size: 14px;
}

.primary-btn,
.offer-btn,
.order-btn,
.check-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 22px;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 800;
  font-size: 15px;
  line-height: 1.1;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.primary-btn,
.offer-btn,
.order-btn {
  color: var(--white);
  background: linear-gradient(135deg, var(--blue), var(--aqua));
  box-shadow: 0 12px 24px rgba(18, 107, 165, 0.22);
}

.check-btn {
  color: var(--navy);
  background: var(--white);
  border: 1px solid var(--line);
}

.primary-btn:hover,
.offer-btn:hover,
.order-btn:hover,
.check-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.small {
  min-height: 42px;
  padding: 11px 16px;
}

.hero {
  overflow: hidden;
  background:
    radial-gradient(circle at 80% 10%, rgba(23, 191, 211, 0.22), transparent 34%),
    linear-gradient(180deg, #f7fdff 0%, #ffffff 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 42px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1, h2, h3, p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(42px, 6vw, 39px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin: 0 0 18px;
  color: var(--navy);
  font-size: clamp(30px, 4vw, 30px);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 10px;
  color: var(--navy);
  line-height: 1.2;
}

.hero-sub {
  max-width: 650px;
  margin: 22px 0;
  color: var(--muted);
  font-size: 19px;
}

.check-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  font-weight: 700;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--aqua);
  box-shadow: inset 0 0 0 5px var(--aqua-soft);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 28px 0 22px;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.badges span,
.use-grid span,
.score-grid span {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.82);
  padding: 9px 12px;
  color: var(--navy);
  font-size: 13px;
  font-weight: 800;
}

.hero-product {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 540px;
}

.hero-product::before {
  content: "";
  position: absolute;
  width: 86%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: linear-gradient(135deg, #dff8ff, #ffffff);
  box-shadow: var(--shadow);
}

.hero-product img {
  position: relative;
  z-index: 2;
  width: min(94%, 560px);
  filter: drop-shadow(0 24px 30px rgba(8, 36, 61, 0.18));
}

.airflow {
  position: absolute;
  z-index: 1;
  right: 3%;
  width: 46%;
  height: 72px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(23, 191, 211, 0), rgba(23, 191, 211, 0.42), rgba(23, 191, 211, 0));
  filter: blur(7px);
  transform: rotate(-10deg);
  animation: breeze 2.8s ease-in-out infinite;
}

.airflow-one { top: 33%; }
.airflow-two { top: 47%; animation-delay: 0.7s; }

@keyframes breeze {
  0%, 100% { opacity: 0.45; transform: translateX(-16px) rotate(-10deg); }
  50% { opacity: 0.85; transform: translateX(22px) rotate(-4deg); }
}

.price-card {
  position: absolute;
  z-index: 3;
  left: 4%;
  bottom: 8%;
  width: min(270px, 56%);
  padding: 16px;
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.price-card span,
.price-card small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.price-card strong {
  display: block;
  color: var(--blue);
  font-size: 34px;
  line-height: 1;
  margin: 6px 0;
}

.price-card label {
  display: block;
  margin: 12px 0 6px;
  color: var(--navy);
  font-size: 12px;
  font-weight: 900;
}

.pack-select {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--sky);
  color: var(--navy);
  font-weight: 800;
  padding: 9px 10px;
}

.price-card-btn {
  width: 100%;
  min-height: 42px;
  margin-top: 12px;
  padding: 11px 14px;
}

.feature-icon {
  width: 48px;
  height: 48px;
  object-fit: contain;
  margin-bottom: 16px;
}

.trust-grid .feature-icon {
  padding: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.96);
}

.trust-strip {
  padding: 28px 0;
  background: var(--navy);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.trust-grid article {
  min-height: 168px;
  padding: 22px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: var(--white);
}

.trust-grid h2 {
  margin-bottom: 8px;
  color: var(--white);
  font-size: 20px;
}

.trust-grid p {
  margin: 0;
  color: #d5eff7;
}

.two-col {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 42px;
}

.two-col p {
  margin-top: 0;
  color: var(--muted);
  font-size: 18px;
}

.section-head {
  max-width: 760px;
  margin: 0 auto 36px;
  text-align: center;
}

.section-head p:not(.eyebrow) {
  color: var(--muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.card-grid article,
.step-grid article,
.package-grid article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 14px 34px rgba(8, 36, 61, 0.08);
}

.card-grid article {
  padding: 24px;
}

.benefits-grid .feature-icon {
  padding: 8px;
  border-radius: var(--radius);
  background: var(--aqua-soft);
}

.card-grid p,
.feature-block p,
.expert-card p,
.guarantee-box p {
  margin: 0;
  color: var(--muted);
}

.features .container {
  display: grid;
  gap: 26px;
}

.feature-block {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 34px;
  align-items: center;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.feature-block.reverse {
  grid-template-columns: 1.28fr 0.72fr;
}

.feature-block.reverse img {
  order: 2;
}

.feature-block img {
  width: min(260px, 100%);
  margin: 0 auto;
}

.four {
  grid-template-columns: repeat(4, 1fr);
}

.step-grid,
.package-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.step-grid article {
  overflow: hidden;
}

.step-grid img {
  width: 100%;
  aspect-ratio: 1.18;
  object-fit: cover;
}

.step-grid span,
.step-grid h3,
.step-grid p {
  display: block;
  margin-left: 22px;
  margin-right: 22px;
}

.step-grid span {
  margin-top: 18px;
  color: var(--blue);
  font-weight: 900;
}

.step-grid p {
  margin-bottom: 24px;
  color: var(--muted);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
}

th, td {
  padding: 16px 18px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

th {
  background: var(--navy);
  color: var(--white);
}

td:nth-child(2) {
  color: var(--blue);
  font-weight: 800;
}

.review-summary {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 36px;
  align-items: center;
}

.rating-big {
  color: var(--blue);
  font-size: 58px;
  font-weight: 900;
  line-height: 1;
}

.rating-bars {
  display: grid;
  gap: 12px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.rating-bars div {
  display: grid;
  grid-template-columns: 72px 1fr 54px;
  gap: 12px;
  align-items: center;
  font-weight: 800;
}

meter {
  width: 100%;
  height: 14px;
}

.score-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.score-grid strong {
  margin-left: 8px;
  color: var(--blue);
}

.two {
  grid-template-columns: repeat(2, 1fr);
}

.testimonial span {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
}

.testimonial p {
  margin-bottom: 16px;
}

.avatar {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--aqua-soft), #ffffff);
  border: 1px solid var(--line);
  color: var(--blue);
  font-weight: 900;
}

.avatar.large {
  flex: 0 0 84px;
  width: 84px;
  height: 84px;
  font-size: 26px;
}

.expert-card,
.guarantee-box {
  display: flex;
  gap: 24px;
  align-items: center;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, #ffffff, var(--sky));
  box-shadow: var(--shadow);
}

blockquote {
  margin: 0 0 14px;
  color: var(--navy);
  font-size: 20px;
  font-weight: 700;
}

.fine-print {
  font-size: 13px;
}

.use-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.use-grid span {
  justify-content: center;
  min-height: 62px;
}

.guarantee-box {
  justify-content: space-between;
}

.packages .section-head {
  margin-bottom: 24px;
}

.package-grid {
  grid-template-columns: repeat(4, 1fr);
}

.package-grid article {
  position: relative;
  padding: 24px;
  text-align: center;
}

.package-option {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.package-option label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  margin-bottom: 16px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--sky);
  color: var(--navy);
  font-size: 13px;
  font-weight: 900;
  cursor: pointer;
}

.package-option input {
  width: 16px;
  height: 16px;
  accent-color: var(--blue);
}

.package-option.selected {
  border-color: var(--blue);
  box-shadow: 0 18px 50px rgba(18, 107, 165, 0.18);
}

.package-option.selected label {
  background: var(--aqua-soft);
  border-color: var(--aqua);
}

.package-grid .best {
  border: 2px solid var(--aqua);
  transform: translateY(-8px);
}

.package-grid b {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--navy);
  color: var(--white);
  font-size: 12px;
}

.package-grid del {
  color: var(--muted);
}

.package-grid strong {
  display: block;
  color: var(--blue);
  font-size: 38px;
  line-height: 1;
  margin-top: 8px;
}

.package-grid p {
  color: var(--navy);
  font-weight: 900;
}

.package-grid .order-btn {
  width: 100%;
  margin-top: auto;
}

.final-cta {
  background: var(--navy);
  color: var(--white);
}

.final-grid {
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  gap: 36px;
  align-items: center;
}

.final-cta h2,
.final-cta .check-list li {
  color: var(--white);
}

.final-cta img {
  max-height: 420px;
  margin: 0 auto;
  filter: drop-shadow(0 26px 30px rgba(0, 0, 0, 0.25));
}

.compact {
  margin-bottom: 24px;
}

.narrow {
  width: min(880px, calc(100% - 32px));
}

.faq-list {
  display: grid;
  gap: 12px;
}

details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 12px 28px rgba(8, 36, 61, 0.06);
}

summary {
  cursor: pointer;
  padding: 18px 20px;
  color: var(--navy);
  font-weight: 900;
}

details p {
  margin: 0;
  padding: 0 20px 20px;
  color: var(--muted);
}

.site-footer {
  padding: 42px 0 24px;
  color: #dcecf4;
  background: #061a2d;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 28px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.footer-links button {
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius);
  background: transparent;
  color: var(--white);
  padding: 10px 12px;
  cursor: pointer;
  font-weight: 700;
}

.copyright {
  width: min(1120px, calc(100% - 32px));
  margin: 24px auto 0;
  color: #a9c5d4;
  font-size: 14px;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  place-items: center;
  padding: 18px;
  background: rgba(6, 26, 45, 0.62);
}

.modal.show {
  display: grid;
}

.modal-panel {
  position: relative;
  width: min(520px, 100%);
  padding: 28px;
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.26);
}

.modal-panel p {
  color: var(--muted);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 50%;
  background: var(--aqua-soft);
  color: var(--navy);
  font-size: 24px;
  cursor: pointer;
}

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.exit-panel {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 18px;
  align-items: center;
  width: min(720px, 100%);
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 120;
  transform: translateY(20px);
  opacity: 0;
  pointer-events: none;
  padding: 12px 16px;
  border-radius: var(--radius);
  background: var(--navy);
  color: var(--white);
  font-weight: 800;
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 940px) {
  nav { display: none; }
  .hero-grid,
  .two-col,
  .review-summary,
  .final-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-product {
    min-height: 420px;
  }
  .trust-grid,
  .card-grid,
  .four,
  .package-grid,
  .use-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .feature-block,
  .feature-block.reverse {
    grid-template-columns: 1fr;
  }
  .feature-block.reverse img {
    order: 0;
  }
  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .section { padding: 58px 0; }
  .site-header {
    padding: 12px 16px;
  }
  .brand {
    font-size: 18px;
  }
  .site-header .small {
    max-width: 142px;
    padding-left: 10px;
    padding-right: 10px;
    font-size: 12px;
  }
  h1 {
    font-size: 42px;
  }
  .hero-sub {
    font-size: 17px;
  }
  .trust-grid,
  .card-grid,
  .four,
  .step-grid,
  .package-grid,
  .use-grid,
  .two {
    grid-template-columns: 1fr;
  }
  .hero-actions,
  .modal-actions {
    flex-direction: column;
  }
  .primary-btn,
  .offer-btn,
  .order-btn,
  .check-btn {
    width: 100%;
  }
  .price-card {
    position: relative;
    left: auto;
    bottom: auto;
    width: 100%;
    margin-top: -40px;
  }
  .hero-product {
    min-height: auto;
    padding-bottom: 20px;
  }
  .expert-card,
  .guarantee-box,
  .exit-panel {
    display: block;
  }
  .exit-panel img {
    width: 170px;
    margin: 0 auto 16px;
  }
  .rating-bars div {
    grid-template-columns: 58px 1fr 42px;
    font-size: 13px;
  }
}