:root {
  color-scheme: dark;
  --bg: #040506;
  --panel: rgba(11, 14, 19, 0.84);
  --panel-soft: rgba(15, 18, 24, 0.72);
  --border: rgba(136, 162, 255, 0.14);
  --text: #f4f7fb;
  --text-soft: rgba(212, 220, 235, 0.72);
  --text-faint: rgba(154, 166, 188, 0.54);
  --accent: #5f76ff;
  --accent-strong: #7f92ff;
  --accent-cyan: #74d8ff;
  --max-width: 1240px;
  --shadow: 0 26px 70px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: #040506;
  color: var(--text);
  font-family: "Outfit", "Noto Sans SC", sans-serif;
}

body {
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.12;
  background-image:
    radial-gradient(circle, rgba(255, 255, 255, 0.18) 0 1px, transparent 1.3px),
    radial-gradient(circle, rgba(255, 255, 255, 0.08) 0 1px, transparent 1.2px);
  background-size: 200px 200px, 280px 280px;
  background-position: 0 0, 70px 90px;
}

.purchase-noise {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.06;
  mix-blend-mode: soft-light;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 3px 3px;
}

.purchase-header {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 18px;
}

.purchase-header__inner {
  width: min(100%, var(--max-width));
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 14px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(9, 12, 16, 0.76);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.purchase-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.purchase-brand__mark {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background:
    radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.28), transparent 45%),
    linear-gradient(145deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.03));
}

.purchase-header__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px 24px;
}

.purchase-header__nav a {
  color: var(--text-faint);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  transition: color 180ms ease;
}

.purchase-header__nav a:hover,
.purchase-header__nav a:focus-visible {
  color: var(--text);
}

.purchase-header__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 16px;
  border: 0;
  border-radius: 999px;
  color: #fff;
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  background: linear-gradient(180deg, var(--accent-strong) 0%, var(--accent) 100%);
  box-shadow: 0 10px 28px rgba(90, 112, 255, 0.28);
  cursor: pointer;
  font-family: inherit;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.purchase-header__cta:hover,
.purchase-header__cta:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 14px 34px rgba(90, 112, 255, 0.4);
}

.purchase-page {
  position: relative;
  z-index: 2;
  padding: 12px 18px 80px;
}

.purchase-hero__inner,
.purchase-layout__inner {
  width: min(100%, var(--max-width));
  margin: 0 auto;
}

.purchase-hero {
  padding: 48px 0 28px;
}

.purchase-kicker {
  margin: 0;
  color: var(--text-faint);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.purchase-hero h1 {
  margin: 18px 0 0;
  display: flex;
  flex-direction: column;
  font-size: clamp(3rem, 7vw, 5.4rem);
  line-height: 0.88;
  font-weight: 800;
  letter-spacing: -0.08em;
}

.purchase-title-primary {
  color: #ffffff;
}

.purchase-title-secondary {
  color: rgba(113, 121, 139, 0.42);
}

.purchase-hero__description {
  max-width: 760px;
  margin: 24px 0 0;
  color: var(--text-soft);
  font-size: 1.04rem;
  line-height: 1.9;
}

.purchase-layout {
  padding-top: 12px;
}

.purchase-layout__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.42fr);
  gap: 24px;
  align-items: start;
}

.purchase-form {
  display: grid;
  gap: 18px;
}

.purchase-card,
.purchase-summary__card {
  border-radius: 30px;
  border: 1px solid var(--border);
  background:
    linear-gradient(180deg, rgba(13, 17, 23, 0.92), rgba(8, 10, 14, 0.96));
  box-shadow: var(--shadow);
}

.purchase-card {
  padding: 28px;
}

.purchase-card__head {
  margin-bottom: 22px;
}

.purchase-card__kicker,
.purchase-summary__kicker {
  margin: 0;
  color: var(--text-faint);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.purchase-card h2,
.purchase-summary__card h2 {
  margin: 14px 0 0;
  color: #ffffff;
  font-size: 1.6rem;
  line-height: 1.14;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.purchase-grid {
  display: grid;
  gap: 16px;
}

.purchase-grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field {
  display: grid;
  gap: 10px;
}

.field span {
  color: rgba(212, 220, 235, 0.8);
  font-size: 0.92rem;
  font-weight: 600;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid rgba(136, 162, 255, 0.12);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
  color: #ffffff;
  font: inherit;
  padding: 16px 18px;
  outline: none;
  transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.field input::placeholder,
.field textarea::placeholder {
  color: rgba(154, 166, 188, 0.5);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: rgba(116, 216, 255, 0.38);
  box-shadow: 0 0 0 4px rgba(116, 216, 255, 0.08);
  background: rgba(255, 255, 255, 0.045);
}

.package-grid,
.payment-grid {
  display: grid;
  gap: 14px;
}

.package-grid {
  grid-template-columns: minmax(0, 1fr);
}

.package-option,
.payment-option {
  display: block;
  cursor: pointer;
}

.package-option input,
.payment-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.package-option__box,
.payment-option__box {
  display: grid;
  gap: 8px;
  padding: 18px 18px 16px;
  border-radius: 22px;
  border: 1px solid rgba(136, 162, 255, 0.12);
  background: rgba(255, 255, 255, 0.03);
  transition: border-color 180ms ease, background 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.package-option__box strong,
.payment-option__box strong {
  color: #ffffff;
  font-size: 1.08rem;
  font-weight: 700;
}

.package-option__box em,
.payment-option__box em {
  color: var(--text-soft);
  font-style: normal;
  font-size: 0.92rem;
  line-height: 1.7;
}

.package-option__box b {
  color: var(--accent-cyan);
  font-size: 1.3rem;
  font-weight: 700;
}

.package-option input:checked + .package-option__box,
.payment-option input:checked + .payment-option__box {
  border-color: rgba(116, 216, 255, 0.36);
  background: rgba(116, 216, 255, 0.08);
  box-shadow: 0 0 0 4px rgba(116, 216, 255, 0.08);
  transform: translateY(-1px);
}

.purchase-summary {
  position: sticky;
  top: 104px;
}

.purchase-summary__card {
  padding: 28px;
}

.purchase-product {
  display: grid;
  grid-template-columns: 116px 1fr;
  gap: 16px;
  align-items: center;
  margin-top: 22px;
  padding: 16px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.03);
}

.purchase-product img {
  width: 100%;
  display: block;
  filter: drop-shadow(0 14px 30px rgba(0, 0, 0, 0.24));
}

.purchase-product strong {
  color: #ffffff;
  font-size: 1.08rem;
  font-weight: 700;
}

.purchase-product p {
  margin: 10px 0 0;
  color: var(--text-soft);
  font-size: 0.92rem;
  line-height: 1.7;
}

.summary-list {
  margin-top: 20px;
  display: grid;
  gap: 12px;
}

.summary-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 12px;
  border-top: 1px solid rgba(136, 162, 255, 0.08);
}

.summary-row span {
  color: var(--text-faint);
  font-size: 0.9rem;
}

.summary-row strong {
  color: #ffffff;
  font-size: 0.96rem;
  font-weight: 700;
}

.purchase-total {
  margin-top: 22px;
  padding: 18px 20px;
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(95, 118, 255, 0.12), rgba(116, 216, 255, 0.06));
  border: 1px solid rgba(116, 216, 255, 0.18);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.purchase-total span {
  color: rgba(212, 220, 235, 0.78);
  font-size: 0.94rem;
  font-weight: 600;
}

.purchase-total strong {
  color: #ffffff;
  font-size: 1.8rem;
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.05em;
}

.purchase-submit {
  width: 100%;
  min-height: 62px;
  margin-top: 20px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--accent-strong) 0%, var(--accent) 100%);
  color: #ffffff;
  font: inherit;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  box-shadow: 0 18px 40px rgba(90, 112, 255, 0.34);
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.purchase-submit:hover,
.purchase-submit:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 22px 44px rgba(90, 112, 255, 0.42);
}

.purchase-submit:disabled,
.purchase-submit[aria-disabled="true"] {
  background: linear-gradient(180deg, #495161 0%, #343b49 100%);
  box-shadow: none;
  cursor: not-allowed;
  transform: none;
  opacity: 0.92;
}

.purchase-summary__note {
  margin: 16px 0 0;
  color: var(--text-faint);
  font-size: 0.86rem;
  line-height: 1.7;
}

@media (max-width: 960px) {
  .purchase-header__inner {
    border-radius: 28px;
    grid-template-columns: 1fr;
  }

  .purchase-header__nav {
    justify-content: flex-start;
  }

  .purchase-header__cta {
    justify-self: flex-start;
  }

  .purchase-layout__inner {
    grid-template-columns: 1fr;
  }

  .purchase-summary {
    position: static;
  }
}

@media (max-width: 640px) {
  .purchase-header {
    padding: 12px;
  }

  .purchase-page {
    padding: 8px 12px 52px;
  }

  .purchase-hero {
    padding: 34px 0 20px;
  }

  .purchase-hero h1 {
    font-size: clamp(2.7rem, 15vw, 4.2rem);
  }

  .purchase-hero__description {
    font-size: 0.96rem;
    line-height: 1.82;
  }

  .purchase-card,
  .purchase-summary__card {
    padding: 22px 18px;
    border-radius: 24px;
  }

  .purchase-grid-2 {
    grid-template-columns: 1fr;
  }

  .purchase-product {
    grid-template-columns: 1fr;
  }

  .purchase-total {
    align-items: flex-start;
    flex-direction: column;
  }

  .purchase-total strong {
    font-size: 1.56rem;
  }
}