:root {
  --blue-brand: #2377ff;
  --blue-dark: #06244c;
  --orange-cta: #ff610b;
  --white: #ffffff;
  --gray-50: #f4f7fb;
  --gray-100: #e8eef6;
  --gray-300: #c5d0de;
  --gray-600: #5a6b7d;
  --shadow-sm: 0 4px 16px rgba(6, 36, 76, 0.08);
  --shadow-md: 0 12px 40px rgba(6, 36, 76, 0.12);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --header-h: auto;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-heading: "Korolev Condensed", system-ui, sans-serif;
}

@font-face {
  font-family: "Korolev Condensed";
  src: url("../assets/fonts/korolev-light-condensed.otf") format("opentype");
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Korolev Condensed";
  src: url("../assets/fonts/korolev-medium-condensed.otf") format("opentype");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Korolev Condensed";
  src: url("../assets/fonts/korolev-bold-condensed.otf") format("opentype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

h1,
h2,
h3,
h4,
h5,
h6,
.hero__title,
.section__title,
.benefit-card__title,
.form-step__title,
.success-panel__title,
.store-block__title,
.trust-item__value,
.iss-footer__heading,
.iss-nav__panel-title {
  font-family: var(--font-heading);
  font-weight: 700;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--blue-dark);
  background: var(--white);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--blue-brand);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(100% - 2rem, 720px);
  margin-inline: auto;
}

.container--wide {
  width: min(100% - 2rem, 960px);
  margin-inline: auto;
}

.site-footer {
  padding-bottom: calc(5rem + env(safe-area-inset-bottom));
}

.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #0a2f5c 0%, var(--blue-brand) 55%, #4d9dff 100%);
  color: var(--white);
  padding: 2rem 0 2.5rem;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 85% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 45%),
    radial-gradient(circle at 10% 80%, rgba(255, 97, 11, 0.12) 0%, transparent 40%);
  pointer-events: none;
}

.hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1.75rem;
  align-items: center;
}

.hero__content {
  order: 2;
}

.hero__visual {
  order: 1;
  display: flex;
  justify-content: center;
}

.hero__visual img {
  width: min(100%, 320px);
  filter: drop-shadow(0 20px 40px rgba(6, 36, 76, 0.35));
}

.hero__badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 1rem;
}

.hero__title {
  margin: 0 0 0.75rem;
  font-size: clamp(1.875rem, 7vw, 2.75rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.hero__subtitle {
  margin: 0 0 0.5rem;
  font-size: clamp(1rem, 3.5vw, 1.25rem);
  font-weight: 600;
  opacity: 0.95;
}

.hero__text {
  margin: 0 0 1.5rem;
  font-size: 1rem;
  opacity: 0.88;
  max-width: 36ch;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: none;
  border-radius: 999px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
  padding: 0.95rem 1.5rem;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  text-decoration: none;
}

.btn:active {
  transform: scale(0.98);
}

.btn--primary {
  background: var(--orange-cta);
  color: var(--white);
  box-shadow: 0 8px 24px rgba(255, 97, 11, 0.35);
}

.btn--primary:hover {
  background: #e8560a;
  text-decoration: none;
}

.btn--secondary {
  background: var(--white);
  color: var(--blue-dark);
  border: 2px solid var(--gray-100);
}

.btn--secondary:hover {
  border-color: var(--gray-300);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.12);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.btn--block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.trust-bar {
  background: var(--gray-50);
  border-block: 1px solid var(--gray-100);
  padding: 1.25rem 0;
}

.trust-bar__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.trust-item {
  text-align: center;
  padding: 0.5rem;
}

.trust-item__value {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--blue-brand);
  margin-bottom: 0.15rem;
}

.trust-item__label {
  font-size: 0.8125rem;
  color: var(--gray-600);
  line-height: 1.3;
}

.section {
  padding: 3rem 0;
}

.section--alt {
  background: var(--gray-50);
}

.section__title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 5vw, 2rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.section__intro {
  margin: 0 0 2rem;
  color: var(--gray-600);
  font-size: 1rem;
}

.benefits {
  display: grid;
  gap: 1rem;
}

.benefit-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.benefit-card__icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(35, 119, 255, 0.1);
  color: var(--blue-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.benefit-card__title {
  margin: 0 0 0.35rem;
  font-size: 1.0625rem;
  font-weight: 700;
}

.benefit-card__text {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--gray-600);
}

.form-section {
  padding: 3rem 0;
  background: linear-gradient(180deg, var(--white) 0%, var(--gray-50) 100%);
}

.form-section__header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.form-section__header .section__intro {
  margin-bottom: 0;
}

.form-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-100);
  padding: 1.5rem;
}

.form-progress {
  margin-bottom: 1.5rem;
}

.form-progress__label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--gray-600);
  margin-bottom: 0.5rem;
}

.form-progress__track {
  height: 6px;
  background: var(--gray-100);
  border-radius: 999px;
  overflow: hidden;
}

.form-progress__fill {
  height: 100%;
  width: 25%;
  background: linear-gradient(90deg, var(--blue-brand), var(--orange-cta));
  border-radius: 999px;
  transition: width 0.3s ease;
}

.form-step__title {
  margin: 0 0 0.35rem;
  font-size: 1.25rem;
  font-weight: 700;
}

.form-step__desc {
  margin: 0 0 1.25rem;
  font-size: 0.9375rem;
  color: var(--gray-600);
}

.field {
  margin-bottom: 1rem;
}

.field label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.8rem 0.9rem;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  color: var(--blue-dark);
  background: var(--white);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--blue-brand);
  box-shadow: 0 0 0 3px rgba(35, 119, 255, 0.15);
}

.field input.is-invalid,
.field select.is-invalid {
  border-color: #e53935;
}

.field-error {
  display: none;
  margin-top: 0.35rem;
  font-size: 0.8125rem;
  color: #e53935;
}

.field-error.is-visible {
  display: block;
}

.field-row {
  display: grid;
  gap: 1rem;
}

.choice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
}

.choice {
  position: relative;
}

.choice input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.choice span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.65rem 0.5rem;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.choice input:checked + span {
  border-color: var(--blue-brand);
  background: rgba(35, 119, 255, 0.08);
  color: var(--blue-brand);
}

.field--checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
}

.field--checkbox input {
  width: auto;
  margin-top: 0.2rem;
  flex-shrink: 0;
}

.field--checkbox label {
  margin: 0;
  font-weight: 400;
  font-size: 0.8125rem;
  color: var(--gray-600);
  line-height: 1.45;
}

.form-actions {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.form-error {
  background: #fdecea;
  color: #c62828;
  border: 1px solid #f5c6cb;
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.success-panel {
  text-align: center;
  padding: 2rem 1rem;
}

.success-panel__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: rgba(35, 119, 255, 0.1);
  color: var(--blue-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.success-panel__title {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
}

.success-panel__text {
  margin: 0 0 1.5rem;
  color: var(--gray-600);
}

.store-block {
  background: var(--blue-dark);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.store-block__title {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
}

.store-block__text {
  margin: 0 0 0.35rem;
  opacity: 0.9;
  font-size: 0.9375rem;
}

.store-block__phone {
  margin: 1rem 0 0;
  font-weight: 600;
  font-size: 0.9375rem;
}

.mobile-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  padding: 0.75rem 1rem calc(0.75rem + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--gray-100);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
}

.mobile-cta .btn {
  font-size: 0.875rem;
  padding: 0.85rem 0.75rem;
}

.iss-footer {
  padding-bottom: calc(5rem + env(safe-area-inset-bottom));
}

body.iss-form-active .iss-footer {
  padding-bottom: calc(1.5rem + env(safe-area-inset-bottom));
}

@media (min-width: 640px) {
  .trust-bar__grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .field-row {
    grid-template-columns: 1fr 1fr;
  }

  .form-actions {
    grid-template-columns: auto 1fr;
  }

  .form-actions #btn-next {
    grid-column: 2;
  }

  .mobile-cta {
    display: none;
  }

  .iss-footer {
    padding-bottom: 1.5rem;
  }
}

@media (min-width: 900px) {
  .hero {
    padding: 3rem 0 3.5rem;
  }

  .hero__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }

  .hero__content {
    order: 1;
  }

  .hero__visual {
    order: 2;
  }

  .hero__visual img {
    width: min(100%, 420px);
  }

  .benefits {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }

  .form-card {
    padding: 2rem 2.25rem;
  }
}