.bitrix-installation {
  position: relative;
  overflow: hidden;
  color: #f3f6ff;
  background:
    radial-gradient(circle at 83% 14%, rgba(45, 106, 255, .18), transparent 32rem),
    #080b15;
  border-block: 1px solid rgba(151, 169, 213, .14);
}

.bitrix-installation::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .2;
  background-image:
    linear-gradient(rgba(114, 139, 201, .13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(114, 139, 201, .13) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, #000, transparent 90%);
}

.bitrix-installation__inner {
  position: relative;
  width: min(100% - 48px, 1120px);
  margin: 0 auto;
  padding: 72px 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.bitrix-installation__summary,
.bitrix-installation__form-wrap {
  border: 1px solid rgba(151, 169, 213, .2);
  border-radius: 20px;
  background: linear-gradient(145deg, rgba(18, 25, 43, .96), rgba(9, 13, 25, .96));
  box-shadow: 0 24px 80px rgba(0, 0, 0, .25);
}

.bitrix-installation__summary { padding: 40px; }

.bitrix-installation__eyebrow {
  margin: 0 0 14px;
  color: #37d9ff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.bitrix-installation h2 {
  max-width: 800px;
  margin: 0;
  color: #f5f7ff;
  font: inherit;
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 650;
  line-height: 1.05;
  letter-spacing: -.035em;
}

.bitrix-installation__lead {
  max-width: 720px;
  margin: 20px 0 0;
  color: #aeb9d5;
  font-size: 18px;
  line-height: 1.65;
}

.bitrix-installation__term {
  margin-top: 24px;
  padding: 16px 18px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3px 12px;
  align-items: center;
  width: fit-content;
  border: 1px solid rgba(55, 217, 255, .26);
  border-radius: 14px;
  background: rgba(23, 104, 183, .12);
}

.bitrix-installation__term > span { grid-row: 1 / 3; color: #37d9ff; font-size: 24px; }
.bitrix-installation__term strong { color: #f5f7ff; font-size: 15px; }
.bitrix-installation__term small { color: #93a1c2; line-height: 1.4; }

.bitrix-installation__features {
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 24px;
  list-style: none;
}

.bitrix-installation__features li {
  position: relative;
  padding-left: 24px;
  color: #d3d9ea;
  font-size: 14px;
  line-height: 1.5;
}

.bitrix-installation__features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #37d9ff;
  font-weight: 800;
}

.bitrix-installation__cta,
.bitrix-installation__submit {
  min-height: 48px;
  margin-top: 32px;
  padding: 0 22px;
  border: 0;
  border-radius: 10px;
  color: #fff;
  background: #2f68f6;
  box-shadow: 0 10px 34px rgba(47, 104, 246, .26);
  font: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: transform .16s ease, background .16s ease, opacity .16s ease;
}

.bitrix-installation__cta:hover,
.bitrix-installation__submit:hover { background: #4278ff; transform: translateY(-1px); }
.bitrix-installation__cta:focus-visible,
.bitrix-installation__submit:focus-visible,
.bitrix-installation input:focus-visible,
.bitrix-installation select:focus-visible,
.bitrix-installation textarea:focus-visible { outline: 2px solid #37d9ff; outline-offset: 2px; }
.bitrix-installation__submit:disabled { cursor: wait; opacity: .65; transform: none; }
.bitrix-installation__cta span { margin-left: 10px; }

.bitrix-installation__scope {
  max-width: 760px;
  margin: 18px 0 0;
  color: #7f8cac;
  font-size: 13px;
  line-height: 1.55;
}

.bitrix-installation__form-wrap { padding: 32px 40px 40px; }
.bitrix-installation__form-wrap[hidden] { display: none; }
.bitrix-installation__form-head h3,
.bitrix-installation__success h3 {
  margin: 0;
  color: #f5f7ff;
  font: inherit;
  font-size: 24px;
  font-weight: 650;
  letter-spacing: -.02em;
}
.bitrix-installation__form-head > p:last-child { margin: 8px 0 0; color: #93a1c2; }

.bitrix-installation__grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.bitrix-installation label { display: grid; gap: 8px; color: #c8d0e5; font-size: 13px; }
.bitrix-installation label b { color: #37d9ff; }
.bitrix-installation label em { color: #7f8cac; font-style: normal; }
.bitrix-installation input:not([type="checkbox"]),
.bitrix-installation select,
.bitrix-installation textarea {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid rgba(151, 169, 213, .26);
  border-radius: 10px;
  color: #f5f7ff;
  background: rgba(3, 7, 16, .72);
  font: inherit;
  font-size: 15px;
}
.bitrix-installation input:not([type="checkbox"]),
.bitrix-installation select { min-height: 48px; padding: 0 14px; }
.bitrix-installation textarea { padding: 13px 14px; resize: vertical; }
.bitrix-installation select option { color: #111827; background: #fff; }
.bitrix-installation input::placeholder,
.bitrix-installation textarea::placeholder { color: #667391; }

.bitrix-installation__additional {
  margin: 28px 0 0;
  padding: 22px;
  border: 1px solid rgba(151, 169, 213, .16);
  border-radius: 14px;
}
.bitrix-installation__additional legend { padding: 0 8px; color: #eef2ff; font-size: 15px; font-weight: 700; }
.bitrix-installation__additional legend span { margin-left: 6px; color: #7f8cac; font-size: 12px; font-weight: 500; }
.bitrix-installation__additional .bitrix-installation__grid { margin-top: 4px; }
.bitrix-installation__server { margin-top: 18px; }
.bitrix-installation__server[hidden] { display: none; }
.bitrix-installation__additional > label:last-child { margin-top: 18px; }

.bitrix-installation__consent {
  margin-top: 20px;
  display: flex !important;
  grid-template-columns: auto 1fr;
  align-items: flex-start;
  gap: 10px !important;
  color: #93a1c2 !important;
  line-height: 1.5;
}
.bitrix-installation__consent input { width: 17px; height: 17px; margin: 2px 0 0; accent-color: #2f68f6; }
.bitrix-installation__consent a { color: #37d9ff; }
.bitrix-installation__actions { display: flex; align-items: center; gap: 18px; }
.bitrix-installation__status { margin: 30px 0 0; color: #ff9d9d; font-size: 13px; }

.bitrix-installation__success { padding: 42px 0 10px; text-align: center; }
.bitrix-installation__success[hidden] { display: none; }
.bitrix-installation__success > span {
  width: 48px;
  height: 48px;
  margin: 0 auto 18px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #061019;
  background: #37d9ff;
  font-size: 24px;
  font-weight: 800;
}
.bitrix-installation__success p { max-width: 580px; margin: 12px auto 0; color: #aeb9d5; line-height: 1.6; }

@media (max-width: 760px) {
  .bitrix-installation__inner { width: min(100% - 32px, 1120px); padding: 48px 0; }
  .bitrix-installation__summary,
  .bitrix-installation__form-wrap { padding: 26px 20px; border-radius: 16px; }
  .bitrix-installation h2 { font-size: clamp(30px, 10vw, 40px); }
  .bitrix-installation__lead { font-size: 16px; }
  .bitrix-installation__features,
  .bitrix-installation__grid { grid-template-columns: minmax(0, 1fr); }
  .bitrix-installation__term { width: auto; }
  .bitrix-installation__additional { padding: 18px 14px; }
  .bitrix-installation__actions { display: block; }
  .bitrix-installation__submit { width: 100%; }
  .bitrix-installation__status { margin-top: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  .bitrix-installation__cta,
  .bitrix-installation__submit { transition: none; }
}