/* =========================================================================
   Сверков — лендинг. Оформление.
   Дизайн-токены наследуют палитру продукта (frontend/src/index.css).
   ========================================================================= */

:root {
  --navy: #1a1a2e;
  --navy-2: #232a45;
  --navy-deep: #12131f;
  --gold: #ffd700;
  --gold-soft: #ffe680;

  --bg: #f5f6fa;
  --surface: #ffffff;
  --surface-alt: #eef0f7;
  --border: #e3e5ef;
  --border-strong: #d3d6e3;

  --text: #1a1a2e;
  --text-2: #4d5266;
  --text-3: #7a8096;
  --on-dark: #ffffff;
  --on-dark-2: #c3c7d8;

  --success: #247a4b;
  --danger: #b33a3a;

  --shadow-sm: 0 1px 3px rgba(20, 22, 40, 0.06), 0 6px 16px rgba(20, 22, 40, 0.05);
  --shadow-md: 0 4px 12px rgba(20, 22, 40, 0.08), 0 16px 40px rgba(20, 22, 40, 0.07);
  --radius: 16px;
  --radius-lg: 24px;
  --radius-sm: 10px;

  --container: 1120px;
  --header-h: 68px;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12141c;
    --surface: #1a1d27;
    --surface-alt: #161923;
    --border: #2a2e3d;
    --border-strong: #3a4053;

    --text: #eceef6;
    --text-2: #b3b8c9;
    --text-3: #868ca0;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 6px 16px rgba(0, 0, 0, 0.35);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.45), 0 16px 40px rgba(0, 0, 0, 0.4);

    color-scheme: dark;
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

h1,
h2,
h3,
h4 {
  line-height: 1.22;
  letter-spacing: -0.015em;
  margin: 0 0 12px;
}

p {
  margin: 0 0 14px;
}

a {
  color: inherit;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 10px 16px;
  background: var(--navy);
  color: #fff;
  border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus {
  left: 0;
}

:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}

/* ============================== Кнопки ============================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1.5px solid transparent;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease,
    border-color 0.15s ease, color 0.15s ease;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 17px;
}

.btn-primary {
  background: var(--gold);
  color: #1a1a2e;
  box-shadow: 0 6px 18px rgba(255, 215, 0, 0.28);
}

.btn-primary:hover {
  background: var(--gold-soft);
  transform: translateY(-1px);
}

.btn-outline {
  border-color: currentColor;
  color: inherit;
  background: transparent;
}

.btn-outline:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.1);
}

.btn-ghost {
  border-color: var(--border-strong);
  background: transparent;
  color: var(--text);
  font-weight: 500;
}

.btn-ghost:hover {
  border-color: var(--text-3);
}

.btn-block {
  width: 100%;
}

.btn[disabled] {
  opacity: 0.6;
  cursor: progress;
  transform: none;
}

/* ============================== Шапка ============================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.2s ease;
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex: 0 0 auto;
}

.brand-mark {
  display: block;
  border-radius: 10px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text strong {
  font-size: 19px;
  letter-spacing: -0.02em;
}

.brand-text small {
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.02em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.site-nav > a:not(.btn) {
  font-size: 15.5px;
  font-weight: 500;
  color: var(--text-2);
  text-decoration: none;
  white-space: nowrap;
}

.site-nav > a:not(.btn):hover {
  color: var(--text);
}

.nav-action {
  font-size: 15px;
  padding: 9px 18px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 42px;
  height: 38px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

/* ============================== Hero ============================== */

.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(900px 380px at 78% -10%, rgba(255, 215, 0, 0.16), transparent 70%),
    radial-gradient(700px 320px at 8% 110%, rgba(90, 130, 255, 0.18), transparent 70%),
    linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 100%);
  color: var(--on-dark);
  padding: 76px 0 68px;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(1000px 400px at 50% 0%, #000 25%, transparent 78%);
  mask-image: radial-gradient(1000px 400px at 50% 0%, #000 25%, transparent 78%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 880px;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 18px;
  padding: 6px 14px;
  border: 1px solid rgba(255, 215, 0, 0.4);
  border-radius: 999px;
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--gold);
  background: rgba(255, 215, 0, 0.07);
}

.hero h1 {
  font-size: clamp(28px, 4.3vw, 46px);
  font-weight: 750;
  margin-bottom: 18px;
}

.hero h1 .accent {
  color: var(--gold);
}

.hero .lead {
  font-size: clamp(16.5px, 1.6vw, 19px);
  color: var(--on-dark-2);
  max-width: 720px;
  margin-bottom: 30px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 30px;
}

.hero-note {
  margin: 0 0 30px;
  font-size: 15px;
  color: var(--on-dark-2);
}

.hero-note a {
  color: var(--gold);
  font-weight: 600;
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-size: 15px;
  color: var(--on-dark-2);
}

.hero-facts li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-facts li::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  flex: 0 0 auto;
}

/* ============================== Секции ============================== */

.section {
  padding: 72px 0;
}

.section-alt {
  background: var(--surface-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head {
  max-width: 760px;
  margin-bottom: 38px;
}

.section-head h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
}

.section-sub {
  color: var(--text-2);
  font-size: 17px;
  margin: 0;
}

/* ============================== Боли ============================== */

.quote-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.quote-card {
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius-sm);
}

.quote {
  font-size: 17px;
  font-weight: 650;
  margin-bottom: 6px;
}

.quote-note {
  margin: 0;
  color: var(--text-2);
  font-size: 15px;
}

.callout {
  margin-top: 30px;
  padding: 26px 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.callout h3 {
  font-size: 19px;
}

.callout-note {
  margin: 0;
  color: var(--text-2);
  font-size: 15px;
}

.tick-list {
  display: grid;
  gap: 10px;
  margin: 0 0 16px;
}

.tick-list li {
  position: relative;
  padding-left: 28px;
  color: var(--text-2);
}

.tick-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 7px;
  width: 15px;
  height: 9px;
  border-left: 2.5px solid var(--success);
  border-bottom: 2.5px solid var(--success);
  transform: rotate(-45deg);
}

/* ============================== Шаги ============================== */

.steps {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  counter-reset: step;
}

.step {
  padding: 24px 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--gold);
  font-weight: 700;
  font-size: 16px;
}

.step h3 {
  font-size: 18px;
}

.step p {
  margin: 0;
  color: var(--text-2);
  font-size: 15.5px;
}

/* ============================== Сравнение ============================== */

.compare {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  margin-top: 30px;
}

.compare-col {
  padding: 24px 26px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
}

.compare-col h3 {
  font-size: 18px;
}

.compare-col ul {
  display: grid;
  gap: 10px;
}

.compare-col li {
  position: relative;
  padding-left: 24px;
  color: var(--text-2);
  font-size: 15.5px;
}

.compare-before li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--text-3);
}

.compare-after {
  border-color: rgba(36, 122, 75, 0.35);
  background: rgba(36, 122, 75, 0.05);
}

.compare-after li::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 7px;
  width: 12px;
  height: 7px;
  border-left: 2.5px solid var(--success);
  border-bottom: 2.5px solid var(--success);
  transform: rotate(-45deg);
}

/* ============================== Карточки ============================== */

.cards {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.cards-4 {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  padding: 24px 24px 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.card p {
  margin: 0;
  color: var(--text-2);
  font-size: 15.5px;
}

.partners-note {
  margin: 24px 0 0;
  padding: 18px 22px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  color: var(--text-2);
  font-size: 16px;
}

/* ============================== Честность ============================== */

.honest-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.honest-grid li {
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--text-3);
  border-radius: var(--radius-sm);
}

.honest-grid h3 {
  font-size: 17px;
}

.honest-grid p {
  margin: 0;
  color: var(--text-2);
  font-size: 15.5px;
}

/* ============================== Этапы ============================== */

.stages {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.stage {
  position: relative;
  padding: 26px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.stage-tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(26, 26, 46, 0.06);
  color: var(--text-2);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

@media (prefers-color-scheme: dark) {
  .stage-tag {
    background: rgba(255, 255, 255, 0.08);
  }
}

.stage h3 {
  font-size: 18px;
}

.stage p {
  margin: 0;
  color: var(--text-2);
  font-size: 15.5px;
}

.pricing-note {
  margin: 26px 0 0;
  color: var(--text-2);
  font-size: 16px;
}

/* ============================== FAQ ============================== */

.faq {
  display: grid;
  gap: 12px;
  max-width: 860px;
}

.faq details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 4px 4px;
}

.faq summary {
  cursor: pointer;
  padding: 16px 20px;
  font-weight: 600;
  font-size: 17px;
  border-radius: var(--radius-sm);
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: '+';
  float: right;
  font-weight: 400;
  font-size: 22px;
  line-height: 1;
  color: var(--text-3);
}

.faq details[open] summary::after {
  content: '–';
}

.faq details p {
  margin: 0;
  padding: 0 20px 18px;
  color: var(--text-2);
  font-size: 16px;
}

/* ============================== CTA / форма ============================== */

.cta-section {
  background:
    radial-gradient(700px 300px at 85% 0%, rgba(255, 215, 0, 0.14), transparent 70%),
    linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 100%);
  color: var(--on-dark);
  padding: 72px 0;
}

.cta-grid {
  display: grid;
  gap: 40px;
  grid-template-columns: minmax(0, 1fr) minmax(0, 440px);
  align-items: start;
}

.cta-copy h2 {
  font-size: clamp(24px, 3vw, 32px);
}

.cta-copy > p {
  color: var(--on-dark-2);
  font-size: 17px;
}

.cta-copy .tick-list li {
  color: var(--on-dark-2);
}

.cta-copy .tick-list li::before {
  border-color: var(--gold);
}

.cta-direct {
  margin: 20px 0 0;
  color: var(--on-dark-2);
}

.cta-direct a {
  color: var(--gold);
  font-weight: 600;
}

.lead-form {
  padding: 28px 26px;
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.lead-form h3 {
  font-size: 20px;
  margin-bottom: 18px;
}

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  margin-bottom: 6px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text-2);
}

.field input[type='text'],
.field textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 16px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field textarea {
  resize: vertical;
  min-height: 96px;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.35);
}

.field input.is-invalid,
.field textarea.is-invalid {
  border-color: var(--danger);
}

.field-check input.is-invalid {
  outline: 2px solid var(--danger);
  outline-offset: 2px;
}

.field-check {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.field-check input {
  margin-top: 3px;
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.field-check label {
  margin: 0;
  font-weight: 400;
  font-size: 14.5px;
  color: var(--text-2);
}

.field-check a {
  color: var(--navy);
}

@media (prefers-color-scheme: dark) {
  .field-check a {
    color: var(--gold);
  }
}

.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-status {
  margin: 12px 0 0;
  font-size: 15px;
  min-height: 22px;
}

.form-status.is-ok {
  color: var(--success);
}

.form-status.is-error {
  color: var(--danger);
}

.form-hint {
  margin: 12px 0 0;
  font-size: 14px;
  color: var(--text-3);
}

.form-hint a {
  color: var(--text-2);
}

/* ============================== Подвал ============================== */

.site-footer {
  background: var(--navy-deep);
  color: var(--on-dark-2);
  padding: 56px 0 26px;
  font-size: 15.5px;
}

.footer-inner {
  display: grid;
  gap: 32px;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr);
}

.brand-footer {
  margin-bottom: 14px;
}

.footer-brand p {
  max-width: 380px;
  margin: 0;
}

.footer-nav,
.footer-contacts {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-nav h4,
.footer-contacts h4 {
  margin: 0 0 4px;
  color: var(--on-dark);
  font-size: 15px;
  letter-spacing: 0.01em;
}

.footer-nav a,
.footer-contacts a {
  color: var(--on-dark-2);
  text-decoration: none;
}

.footer-nav a:hover,
.footer-contacts a:hover {
  color: var(--gold);
}

.footer-cookie-settings {
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  color: var(--on-dark-2);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.footer-cookie-settings:hover {
  color: var(--gold);
}

.footer-bottom {
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 14px;
  color: rgba(195, 199, 216, 0.75);
}

.footer-bottom p {
  margin: 0;
}

/* ============================ Cookie-баннер ============================ */

.cookie-banner {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 80;
  display: flex;
  justify-content: center;
  padding: 16px 20px;
  background: var(--navy);
  color: var(--on-dark);
  box-shadow: 0 -10px 34px rgba(20, 22, 40, 0.3);
}

/* атрибут hidden важнее display:flex выше */
.cookie-banner[hidden] {
  display: none;
}

.cookie-banner-inner {
  width: 100%;
  max-width: var(--container);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px 24px;
}

.cookie-banner-text {
  flex: 1 1 340px;
  min-width: 0;
}

.cookie-banner-text p {
  margin: 0;
  color: var(--on-dark-2);
  font-size: 15.5px;
  line-height: 1.5;
}

.cookie-banner-text .cookie-banner-policy {
  margin-top: 4px;
}

.cookie-banner-title {
  margin: 0 0 4px;
  color: var(--on-dark);
  font-size: 17px;
  font-weight: 700;
}

.cookie-banner-text a {
  color: var(--gold);
}

.cookie-banner-actions {
  display: flex;
  flex-shrink: 0;
  gap: 10px;
}

.cookie-banner .btn-ghost {
  border-color: rgba(255, 255, 255, 0.4);
  color: var(--on-dark);
}

.cookie-banner .btn-ghost:hover {
  border-color: var(--on-dark);
  background: rgba(255, 255, 255, 0.08);
}

/* ============================== Адаптив ============================== */

@media (max-width: 980px) {
  .cta-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

@media (max-width: 900px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 14px 20px 20px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    display: none;
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav > a:not(.btn) {
    padding: 11px 4px;
    border-bottom: 1px solid var(--border);
    font-size: 16.5px;
  }

  .nav-action {
    margin-top: 12px;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 16px;
  }

  .section {
    padding: 54px 0;
  }

  .hero {
    padding: 52px 0 48px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .cookie-banner {
    padding: 12px 16px;
  }

  .cookie-banner-inner {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  /* в колонке flex-basis 340px (ширина для десктопной раскладки) работал
     как высота текстового блока — отсюда провал между текстом и кнопками */
  .cookie-banner-text {
    flex: 0 0 auto;
  }

  .cookie-banner-actions {
    flex-direction: column;
  }

  .cookie-banner-actions .btn {
    width: 100%;
  }

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}