/* ============================================================
   КриптоСдача — Design System
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Color tokens */
  --color-bg: #FFFFFF;
  --color-surface: #FAFAFA;
  --color-surface-2: #F4F4F4;
  --color-ink: #0A0A0A;
  --color-ink-secondary: #525252;
  --color-ink-muted: #A3A3A3;
  --color-border: #E8E8E8;
  --color-border-strong: #1A1A1A;

  /* Accent */
  --color-accent: #22A085;
  --color-accent-hover: #1B8470;
  --color-accent-dark: #0F6B58;

  /* Mint (turquoise) — accent for charts, soft backgrounds */
  --color-mint: #3DDBB0;
  --color-mint-soft: #E8FBF3;
  --color-mint-medium: #B5F0D6;

  /* Semantic */
  --color-success: #16A34A;
  --color-warning: #F59E0B;
  --color-danger: #DC2626;

  /* Type */
  --font-sans: 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  --space-32: 128px;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-lg: 0 20px 48px rgba(0,0,0,0.08);

  /* Layout */
  --container: 1240px;
  --container-narrow: 880px;
  --header-h: 76px;
}

/* ----- Reset & Base ----- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.55;
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss02";
}

img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; }

::selection { background: var(--color-accent); color: var(--color-ink); }

/* ----- Typography ----- */
h1, h2, h3, h4 {
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.05;
  color: var(--color-ink);
}

.h-display {
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.98;
}

.h-1 {
  font-size: clamp(40px, 5.5vw, 64px);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.02;
}

.h-2 {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
}

.h-3 {
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.h-eyebrow {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-secondary);
}

.lede {
  font-size: clamp(18px, 1.8vw, 22px);
  line-height: 1.5;
  color: var(--color-ink-secondary);
  font-weight: 400;
}

.muted { color: var(--color-ink-secondary); }
.text-sm { font-size: 14px; }
.text-xs { font-size: 12px; }

.accent { color: var(--color-accent-dark); }

/* ----- Layout ----- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: clamp(48px, 6vw, 96px) 0;
}

.section-tight {
  padding: clamp(32px, 4vw, 56px) 0;
}

/* ----- Header ----- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-h);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.03em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.logo-icon { height: 26px; width: 26px; display: block; flex-shrink: 0; object-fit: contain; }

.logo .crypto { color: var(--color-ink); }
.logo .sdacha { color: var(--color-accent-dark); }

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  position: relative;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-ink-secondary);
  border-radius: var(--radius-md);
  transition: color .2s ease, background .2s ease;
}

.nav-link:hover {
  color: var(--color-ink);
  background: var(--color-surface);
}

.nav-link.active {
  color: var(--color-ink);
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 16px; right: 16px; bottom: 4px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.menu-toggle {
  display: none;
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
}
.menu-toggle svg { width: 22px; height: 22px; }

/* Mobile menu */
.mobile-menu {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  background: var(--color-bg);
  padding: 32px 24px;
  z-index: 99;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: transform .25s ease, opacity .25s ease;
  overflow-y: auto;
}
.mobile-menu.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.mobile-menu .nav-link {
  font-size: 20px;
  padding: 14px 16px;
}
.mobile-menu .btn {
  margin-top: 12px;
  justify-content: center;
}

/* ----- Buttons ----- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  border-radius: var(--radius-full);
  transition: transform .15s ease, background .2s ease, color .2s ease, box-shadow .25s ease, border-color .2s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}

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

.btn-primary {
  background: var(--color-accent);
  color: #FFFFFF;
  font-weight: 600;
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 10px 28px rgba(34,160,133,0.28);
}

.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-border-strong);
}
.btn-ghost:hover {
  background: var(--color-ink);
  color: white;
}

.btn-dark {
  background: var(--color-ink);
  color: white;
}
.btn-dark:hover { background: #1f1f1f; }

.btn-soft {
  background: var(--color-surface);
  color: var(--color-ink);
  border-color: var(--color-border);
}
.btn-soft:hover {
  background: var(--color-surface-2);
}

.btn-sm { padding: 10px 18px; font-size: 14px; }
.btn-lg { padding: 18px 32px; font-size: 16px; }

/* ----- Pills / Badges ----- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  color: var(--color-ink-secondary);
  border: 1px solid var(--color-border);
}
.pill-accent {
  background: var(--color-accent);
  color: #FFFFFF;
  border-color: transparent;
  font-weight: 600;
}
.pill-dot::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-accent-dark);
}

/* ----- Cards ----- */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(24px, 3vw, 32px);
  transition: border-color .2s ease, transform .2s ease, box-shadow .25s ease;
}
.card:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card-soft {
  background: var(--color-surface);
  border: 1px solid transparent;
}
.card-soft:hover {
  border-color: var(--color-border);
}

.card-dark {
  background: var(--color-ink);
  color: white;
  border-color: transparent;
}
.card-dark .muted { color: rgba(255,255,255,0.65); }

/* ----- Grid utilities ----- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 960px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ----- Hero ----- */
.hero {
  padding: clamp(40px, 5vw, 72px) 0 clamp(32px, 5vw, 64px);
  position: relative;
  overflow: hidden;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  margin-bottom: 32px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-ink-secondary);
}
.hero-eyebrow::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-accent-dark);
  box-shadow: 0 0 0 4px rgba(34,160,133,0.25);
}

.hero-title {
  font-size: clamp(44px, 8.5vw, 104px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.96;
  max-width: 1100px;
}
.hero-title .accent {
  color: var(--color-accent-dark);
}

.hero-sub {
  margin-top: 28px;
  max-width: 640px;
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.55;
  color: var(--color-ink-secondary);
}

.hero-actions {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-meta {
  margin-top: 56px;
  display: flex;
  flex-wrap: wrap;
  gap: 28px 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}
.hero-meta .stat-num {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-ink);
}
.hero-meta .stat-label {
  font-size: 14px;
  color: var(--color-ink-secondary);
  margin-top: 4px;
}

/* ----- Step list (numbered process) ----- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  counter-reset: stepcount;
}
.step {
  position: relative;
  padding: 32px;
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: border-color .2s ease, transform .2s ease;
}
.step:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-2px);
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #FFFFFF;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.step h3 { margin-bottom: 10px; }
.step p { color: var(--color-ink-secondary); }

@media (max-width: 900px) {
  .steps { grid-template-columns: 1fr; }
}

/* ----- Feature row ----- */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.feature-row.reverse { direction: rtl; }
.feature-row.reverse > * { direction: ltr; }

@media (max-width: 900px) {
  .feature-row { grid-template-columns: 1fr; gap: 32px; }
  .feature-row.reverse { direction: ltr; }
}

/* ----- Visual blocks ----- */
.visual {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--color-mint-soft);
  color: var(--color-ink);
  border: 1px solid var(--color-mint-medium);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}

.visual-light {
  background: var(--color-surface);
  color: var(--color-ink);
  border: 1px solid var(--color-border);
}

.visual-dark {
  background: var(--color-ink);
  color: #FFFFFF;
  border-color: transparent;
}

/* ----- Pricing ----- */
.price-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
@media (max-width: 1024px) { .price-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .price-grid { grid-template-columns: 1fr; } }

.price-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: border-color .2s ease, transform .2s ease;
}
.price-card:hover { border-color: var(--color-border-strong); }
.price-card.featured {
  background: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
  transform: scale(1.02);
  box-shadow: 0 24px 56px rgba(34,160,133,0.25);
}
.price-card.featured .muted { color: rgba(255,255,255,0.85); }
.price-card.featured .price-amount { color: #FFFFFF; }
.price-card.featured .price-amount small { color: rgba(255,255,255,0.8); }
.price-card.featured .price-badge { background: #FFFFFF; color: var(--color-accent-dark); }
.price-card.featured .check { background: #FFFFFF; color: var(--color-accent-dark); }
.price-card.featured .btn-primary { background: #FFFFFF; color: var(--color-accent-dark); }
.price-card.featured .btn-primary:hover { background: #F0F9F5; box-shadow: 0 8px 24px rgba(0,0,0,0.15); }

.price-tier {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.price-amount {
  font-size: 48px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}
.price-amount small {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-ink-secondary);
  margin-left: 4px;
}
.price-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 8px;
  border-top: 1px solid var(--color-border);
  margin-top: 4px;
}
.price-card.featured .price-features { border-top-color: rgba(255,255,255,0.12); }
.price-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
}
.check {
  flex-shrink: 0;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #FFFFFF;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 12px;
  margin-top: 2px;
}

.price-badge {
  position: absolute;
  top: -10px; right: 20px;
  background: var(--color-accent);
  color: #FFFFFF;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.price-card { position: relative; }

/* ----- Calculator widget ----- */
.calc {
  background: var(--color-mint-soft);
  color: var(--color-ink);
  border: 1px solid var(--color-mint-medium);
  border-radius: var(--radius-2xl);
  padding: clamp(28px, 4vw, 48px);
  overflow: hidden;
  position: relative;
}
.calc-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}
@media (max-width: 800px) { .calc-inner { grid-template-columns: 1fr; gap: 24px; } }

.calc-fields {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.calc-field label {
  display: block;
  font-size: 13px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-ink-secondary);
  margin-bottom: 8px;
  font-weight: 500;
}
.calc-field input, .calc-field select {
  width: 100%;
  padding: 14px 18px;
  font-size: 17px;
  font-weight: 500;
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-ink);
  transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
}
.calc-field input:focus, .calc-field select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(34,160,133,0.12);
}
.calc-field input::placeholder { color: var(--color-ink-muted); }

.calc-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 480px) { .calc-row { grid-template-columns: 1fr; } }

.calc-result {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 28px;
  text-align: left;
}
.calc-result-label {
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-secondary);
  margin-bottom: 10px;
}
.calc-tax {
  font-size: clamp(40px, 6vw, 56px);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-accent-dark);
  line-height: 1;
}
.calc-detail {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
  color: var(--color-ink-secondary);
}
.calc-detail .row { display: flex; justify-content: space-between; }
.calc-detail .row strong { color: var(--color-ink); font-weight: 600; }

/* ----- Bullet stats ----- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
@media (max-width: 800px) { .kpi-grid { grid-template-columns: 1fr; } }

.kpi-num {
  font-size: clamp(48px, 6vw, 72px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
}
.kpi-num .accent { color: var(--color-accent-dark); }
.kpi-label {
  margin-top: 12px;
  color: var(--color-ink-secondary);
  font-size: 16px;
  max-width: 280px;
}

/* ----- Date marker ----- */
.dates {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 800px) { .dates { grid-template-columns: 1fr; } }
.date-card {
  padding: 28px;
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}
.date-mark {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  margin-bottom: 16px;
}
.date-num {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}
.date-desc {
  color: var(--color-ink-secondary);
}

/* ----- Exchange grid ----- */
.exchange-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}
@media (max-width: 900px) { .exchange-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 480px) { .exchange-grid { grid-template-columns: repeat(2, 1fr); } }
.exchange-chip {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
  font-weight: 500;
  font-size: 14px;
  transition: all .2s ease;
}
.exchange-chip:hover {
  background: var(--color-bg);
  border-color: var(--color-border-strong);
  transform: translateY(-2px);
}
.exchange-chip .em { font-size: 24px; display: block; margin-bottom: 8px; }

/* ----- Audience tabs ----- */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
@media (max-width: 800px) { .audience-grid { grid-template-columns: 1fr; } }
.audience-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 36px;
  transition: all .25s ease;
  overflow: hidden;
}
.audience-card:hover {
  border-color: var(--color-border-strong);
  background: var(--color-bg);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.audience-card h3 { margin-bottom: 12px; }
.audience-card .tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-accent);
  color: #FFFFFF;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 16px;
}
.audience-card ul {
  list-style: none;
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--color-ink-secondary);
  font-size: 15px;
}
.audience-card li::before {
  content: "→";
  color: var(--color-accent-dark);
  margin-right: 10px;
  font-weight: 600;
}

/* ----- FAQ ----- */
.faq {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 24px 0;
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  width: 100%;
  text-align: left;
  cursor: pointer;
  padding: 0;
}
.faq-question::after {
  content: "+";
  flex-shrink: 0;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--color-surface);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 400;
  transition: transform .2s ease, background .2s ease;
}
.faq-item.open .faq-question::after {
  content: "−";
  background: var(--color-accent);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  color: var(--color-ink-secondary);
  font-size: 16px;
  line-height: 1.6;
  transition: max-height .3s ease, padding-top .3s ease;
}
.faq-item.open .faq-answer {
  max-height: 500px;
  padding-top: 16px;
}

/* ----- CTA banner ----- */
.cta-banner {
  background: var(--color-mint-soft);
  color: var(--color-ink);
  border: 1px solid var(--color-mint-medium);
  border-radius: var(--radius-2xl);
  padding: clamp(40px, 6vw, 80px);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top, rgba(61,219,176,0.18), transparent 70%);
  pointer-events: none;
}
.cta-banner > * { position: relative; z-index: 1; }
.cta-banner h2 { color: var(--color-ink); margin-bottom: 16px; }
.cta-banner p { color: var(--color-ink-secondary); max-width: 560px; margin: 0 auto 32px; }

/* Green variant — for high-impact final CTAs */
.cta-banner-green {
  background: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
}
.cta-banner-green::before {
  background: radial-gradient(ellipse at top, rgba(255,255,255,0.18), transparent 70%);
}
.cta-banner-green h2 { color: #FFFFFF; }
.cta-banner-green p { color: rgba(255,255,255,0.9); }
.cta-banner-green .btn-ghost {
  border-color: rgba(255,255,255,0.4);
  color: #FFFFFF;
  background: transparent;
}
.cta-banner-green .btn-ghost:hover {
  background: rgba(255,255,255,0.12);
  color: #FFFFFF;
}
.cta-banner-green .btn-primary {
  background: #FFFFFF;
  color: var(--color-accent-dark);
}
.cta-banner-green .btn-primary:hover {
  background: #F0F9F5;
  box-shadow: 0 8px 24px rgba(0,0,0,0.18);
}

/* ----- Article cards ----- */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 900px) { .article-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .article-grid { grid-template-columns: 1fr; } }

.article-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 28px;
  transition: all .2s ease;
  height: 100%;
}
.article-card:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.article-meta {
  display: flex;
  gap: 12px;
  font-size: 13px;
  color: var(--color-ink-secondary);
  margin-bottom: 16px;
}
.article-meta .tag {
  background: var(--color-accent);
  color: var(--color-ink);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-weight: 600;
}
.article-title {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.3;
  margin-bottom: 12px;
}
.article-excerpt {
  color: var(--color-ink-secondary);
  font-size: 15px;
  line-height: 1.5;
  margin-bottom: 20px;
  flex-grow: 1;
}
.article-read {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent-dark);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ----- Contact form ----- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; gap: 32px; } }

.form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.form-field label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--color-ink);
}
.form-field input, .form-field textarea, .form-field select {
  width: 100%;
  padding: 14px 18px;
  font-size: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-ink);
  transition: border-color .2s ease, background .2s ease;
}
.form-field input:focus, .form-field textarea:focus, .form-field select:focus {
  outline: none;
  border-color: var(--color-ink);
  background: var(--color-bg);
}
.form-field textarea { resize: vertical; min-height: 140px; }

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.contact-row {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  transition: all .2s ease;
}
.contact-row:hover {
  background: var(--color-bg);
  border-color: var(--color-border);
}
.contact-icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #FFFFFF;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.contact-row strong { display: block; margin-bottom: 4px; font-weight: 600; }
.contact-row .muted { font-size: 14px; }

/* ----- Footer ----- */
.footer {
  background: var(--color-ink);
  color: white;
  padding: 80px 0 32px;
  margin-top: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 64px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
}
.footer-brand .logo { font-size: 28px; }
.footer-brand .logo-icon { height: 32px; width: 32px; }
.footer-brand .logo .crypto { color: white; }
.footer-tagline {
  margin-top: 20px;
  color: rgba(255,255,255,0.6);
  font-size: 15px;
  line-height: 1.55;
  max-width: 360px;
}
.footer-col h4 {
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 20px;
  font-weight: 500;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.footer-col a {
  color: rgba(255,255,255,0.85);
  font-size: 15px;
  transition: color .2s ease;
}
.footer-col a:hover { color: var(--color-accent); }

.footer-bottom {
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-socials {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.footer-social {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.85);
  font-size: 14px;
  font-weight: 500;
  transition: color .2s ease;
}
.footer-social:hover { color: var(--color-accent); }
.footer-social svg { width: 20px; height: 20px; }
.footer-copy {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}

/* Floating contact bubble */
.fab {
  position: fixed;
  bottom: 24px; right: 24px;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #FFFFFF;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 12px 32px rgba(34,160,133,0.45);
  z-index: 50;
  transition: transform .2s ease;
}
.fab:hover { transform: scale(1.08); }
.fab svg { width: 24px; height: 24px; }

/* ----- Disclaimer note ----- */
.disclaimer {
  margin-top: 24px;
  padding: 16px 20px;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  font-size: 13px;
  color: var(--color-ink-secondary);
  line-height: 1.5;
}

/* ----- Section header pattern ----- */
.sh {
  margin-bottom: 56px;
  max-width: 760px;
}
.sh .h-eyebrow {
  display: inline-block;
  margin-bottom: 16px;
}
.sh p {
  margin-top: 16px;
  color: var(--color-ink-secondary);
  font-size: 18px;
}

/* ----- Page header ----- */
.page-header {
  padding: 80px 0 40px;
  border-bottom: 1px solid var(--color-border);
}
.page-header .h-eyebrow { margin-bottom: 16px; }
.page-header h1 { max-width: 880px; }
.page-header p {
  margin-top: 20px;
  color: var(--color-ink-secondary);
  max-width: 640px;
  font-size: 18px;
}

/* ----- Animations ----- */
@keyframes rise {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.rise {
  animation: rise .7s cubic-bezier(0.16, 1, 0.3, 1) both;
}
.rise-2 { animation-delay: 0.08s; }
.rise-3 { animation-delay: 0.16s; }
.rise-4 { animation-delay: 0.24s; }
.rise-5 { animation-delay: 0.32s; }

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(34,160,133,0.45); }
  50% { box-shadow: 0 0 0 8px rgba(34,160,133,0); }
}

/* ----- Mobile nav ----- */
@media (max-width: 900px) {
  .nav { display: none; }
  .menu-toggle { display: inline-flex; }
  .header-cta .btn:not(.menu-toggle) { display: none; }
}

/* ----- Misc ----- */
.divider {
  height: 1px;
  background: var(--color-border);
  margin: 64px 0;
}
.text-center { text-align: center; }
.mt-8 { margin-top: 32px; }
.mt-12 { margin-top: 48px; }
.mb-4 { margin-bottom: 16px; }

/* Hover lift utility */
.lift { transition: transform .2s ease, box-shadow .25s ease; }
.lift:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }

/* ============================================ */
/*  Article page (blog/*.html)                  */
/* ============================================ */
.article-page {
  padding-top: clamp(40px, 6vw, 80px);
  padding-bottom: clamp(40px, 6vw, 80px);
}
.article-page .container { max-width: 760px; }

.article-header {
  margin-bottom: 48px;
}
.article-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-ink-secondary);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  margin-bottom: 32px;
  transition: color .2s ease;
}
.article-back:hover { color: var(--color-accent-dark); }

.article-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  font-size: 14px;
  color: var(--color-ink-secondary);
}
.article-meta-row .tag {
  background: var(--color-mint-soft);
  color: var(--color-accent-dark);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.article-title-page {
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.article-lede {
  font-size: 19px;
  line-height: 1.55;
  color: var(--color-ink-secondary);
  margin-bottom: 0;
}

.article-content {
  font-size: 17px;
  line-height: 1.65;
  color: var(--color-ink);
}
.article-content h2 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: 48px;
  margin-bottom: 16px;
  line-height: 1.25;
}
.article-content h3 {
  font-size: 22px;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
  line-height: 1.3;
}
.article-content p {
  margin-bottom: 18px;
}
.article-content ul,
.article-content ol {
  margin-bottom: 18px;
  padding-left: 24px;
}
.article-content li {
  margin-bottom: 8px;
}
.article-content strong {
  font-weight: 600;
  color: var(--color-ink);
}
.article-content a {
  color: var(--color-accent-dark);
  font-weight: 500;
  border-bottom: 1px solid var(--color-mint-medium);
  text-decoration: none;
  transition: border-color .2s ease;
}
.article-content a:hover { border-color: var(--color-accent-dark); }

.article-callout {
  background: var(--color-mint-soft);
  border: 1px solid var(--color-mint-medium);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin: 24px 0;
}
.article-callout strong {
  display: block;
  margin-bottom: 8px;
  color: var(--color-accent-dark);
}

.article-callout-warning {
  background: #FFF8E1;
  border-color: #FFE082;
}
.article-callout-warning strong {
  color: #B7791F;
}

.article-cta {
  margin-top: 64px;
  padding: 40px;
  background: var(--color-accent);
  color: #FFFFFF;
  border-radius: var(--radius-2xl);
  text-align: center;
}
.article-cta h3 {
  color: #FFFFFF;
  font-size: 24px;
  margin-bottom: 12px;
}
.article-cta p {
  color: rgba(255,255,255,0.92);
  margin-bottom: 24px;
}
.article-cta .btn-primary {
  background: #FFFFFF;
  color: var(--color-accent-dark);
}
.article-cta .btn-primary:hover {
  background: #F0F9F5;
}

.article-footer-meta {
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
  font-size: 14px;
  color: var(--color-ink-secondary);
}

/* Coming-soon article cards */
.article-card.coming-soon {
  pointer-events: none;
  opacity: 0.6;
  cursor: default;
}
.article-card.coming-soon .article-read {
  color: var(--color-ink-muted);
}

/* ============================================ */
/*  Featured article on /blog                   */
/* ============================================ */
.featured-article {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  padding: 48px;
  background: var(--color-mint-soft);
  color: var(--color-ink);
  border: 1px solid var(--color-mint-medium);
}
.featured-article-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.featured-article-title {
  color: var(--color-ink);
  font-size: clamp(28px, 3.5vw, 42px);
}
.featured-article-excerpt {
  margin-top: 20px;
  color: var(--color-ink-secondary);
  font-size: 17px;
  line-height: 1.5;
}
.featured-article-meta {
  margin-top: 32px;
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--color-ink-secondary);
  font-size: 14px;
}
.featured-article-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 32px;
}
.featured-article-date-num {
  font-size: clamp(48px, 6vw, 72px);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-accent-dark);
  line-height: 1;
}
.featured-article-date-year {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-accent-dark);
  margin-top: 4px;
  line-height: 1;
}
.featured-article-date-label {
  margin-top: 16px;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-secondary);
}

@media (max-width: 800px) {
  .featured-article {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 28px;
  }
  .featured-article-visual { padding: 28px; min-height: 180px; }
}

/* ============================================ */
/*  Mobile / tablet adaptation — all pages       */
/* ============================================ */

/* ---- Container side paddings ---- */
@media (max-width: 768px) {
  .container { padding-left: 20px; padding-right: 20px; }
  .container-narrow { padding-left: 20px; padding-right: 20px; }
}
@media (max-width: 480px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .container-narrow { padding-left: 16px; padding-right: 16px; }
}

/* ---- Typography on mobile ---- */
@media (max-width: 768px) {
  .h-1 { font-size: clamp(36px, 9vw, 56px); line-height: 1.05; }
  .h-2 { font-size: clamp(28px, 7vw, 40px); line-height: 1.1; }
  .h-3 { font-size: clamp(20px, 5vw, 24px); }
  .hero-title { font-size: clamp(40px, 11vw, 72px) !important; line-height: 1.02; }
  .hero-sub { font-size: 16px; }
}
@media (max-width: 480px) {
  .h-1 { font-size: clamp(30px, 9vw, 42px); }
  .h-2 { font-size: clamp(24px, 8vw, 32px); }
  .hero-title { font-size: clamp(30px, 9vw, 42px) !important; word-break: normal; overflow-wrap: break-word; hyphens: none; }
}

/* ---- Hero section ---- */
@media (max-width: 768px) {
  .hero { padding: 32px 0 24px; }
  .hero-meta {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; justify-content: center; }
}

/* ---- Section paddings on mobile ---- */
@media (max-width: 768px) {
  .section { padding: 40px 0; }
  .section-tight { padding: 24px 0; }
}

/* ---- Grids: 2/3/4 cols → 1 on mobile ---- */
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr !important; gap: 16px !important; }
  .audience-grid { grid-template-columns: 1fr !important; }
  .price-grid { grid-template-columns: 1fr !important; }
  .article-grid { grid-template-columns: 1fr !important; }
  .dates { grid-template-columns: 1fr !important; }
  .steps { grid-template-columns: 1fr !important; gap: 16px !important; }
  .contact-grid { grid-template-columns: 1fr !important; gap: 24px !important; }
  .footer-grid { grid-template-columns: 1fr !important; gap: 32px !important; }
}

/* ---- Calculator on mobile ---- */
@media (max-width: 800px) {
  .calc { padding: 24px !important; }
  .calc-inner { grid-template-columns: 1fr !important; gap: 20px !important; }
}
@media (max-width: 480px) {
  .calc { padding: 16px !important; border-radius: 20px !important; }
  .calc-row { grid-template-columns: 1fr !important; }
  .calc-tax { font-size: clamp(32px, 9vw, 44px) !important; }
  .calc-result { padding: 20px !important; }
  /* Кнопка "Заказать точный расчёт..." не должна вылазить */
  .calc-result .btn {
    width: 100%;
    padding: 14px 16px !important;
    font-size: 14px !important;
    white-space: normal;
    line-height: 1.3;
    text-align: center;
  }
  /* На очень узких экранах сократим текст метки */
  .calc-result-label { font-size: 11px !important; }
}

/* ---- CTA banner on mobile ---- */
@media (max-width: 768px) {
  .cta-banner { padding: 32px 24px !important; }
  .cta-banner h2 { font-size: clamp(24px, 7vw, 32px); }
  .cta-banner p { font-size: 15px; }
  .cta-banner > div[style*="display:flex"] {
    flex-direction: column !important;
    gap: 12px !important;
  }
  .cta-banner > div[style*="display:flex"] .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ---- Cards on mobile ---- */
@media (max-width: 768px) {
  .card { padding: 24px !important; }
  .card .h-2, .card .h-3 { word-wrap: break-word; }
}

/* ---- Steps detail rows: hide visual on mobile or stack ---- */
@media (max-width: 900px) {
  .feature-row { grid-template-columns: 1fr !important; gap: 24px !important; }
  .feature-row.reverse > *:first-child { order: 0 !important; }
  .visual { aspect-ratio: auto; min-height: 200px; padding: 24px !important; }
}

/* ---- Page header (services/business/contacts) ---- */
@media (max-width: 768px) {
  .page-header { padding: 32px 0 24px !important; }
}

/* ---- Article page (blog) ---- */
@media (max-width: 768px) {
  .article-page { padding-top: 24px; padding-bottom: 32px; }
  .article-page .container { max-width: 100%; }
  .article-title-page { font-size: clamp(28px, 7vw, 36px) !important; }
  .article-lede { font-size: 16px; }
  .article-content { font-size: 16px; }
  .article-content h2 { font-size: 22px; margin-top: 32px; }
  .article-content h3 { font-size: 18px; margin-top: 24px; }
  .article-callout { padding: 16px 18px; margin: 18px 0; }
  .article-cta { padding: 24px; margin-top: 40px; }
  .article-cta h3 { font-size: 20px; }
}

/* ---- Header / navigation ---- */
@media (max-width: 900px) {
  .nav { display: none !important; }
  .menu-toggle { display: inline-flex !important; }
  .header-cta .btn-sm { display: none; }
}
@media (max-width: 480px) {
  .logo { font-size: 18px !important; }
  .logo-icon { height: 22px !important; width: 22px !important; }
}

/* ---- Form fields on mobile ---- */
@media (max-width: 768px) {
  .form input,
  .form select,
  .form textarea {
    font-size: 16px; /* preserve, prevents iOS auto-zoom */
  }
}

/* ---- FAB position on mobile ---- */
@media (max-width: 480px) {
  .fab {
    bottom: 16px;
    right: 16px;
    width: 52px;
    height: 52px;
  }
}

/* ---- Pricing/services pills: inline-wrapping  ---- */
@media (max-width: 480px) {
  .pill {
    font-size: 11px;
    padding: 4px 10px;
  }
}

/* ---- Tap targets: keep buttons big enough ---- */
@media (max-width: 768px) {
  .btn-sm { padding: 10px 18px; font-size: 14px; min-height: 44px; }
  .btn { min-height: 44px; }
  .btn-lg { min-height: 52px; }
  .nav-link, .faq-question, .article-card, .audience-card { min-height: 44px; }
}

/* ---- Audience cards: tighter on mobile ---- */
@media (max-width: 768px) {
  .audience-card { padding: 24px !important; }
}

/* ---- Inline element overrides: huge inline visual numbers ---- */
@media (max-width: 480px) {
  /* Контакты — большие цифры в карточках "Защита/152-ФЗ/259-ФЗ" */
  .card-soft div[style*="font-size:48px"] { font-size: 36px !important; }
}

/* ---- Long Russian words: avoid horizontal overflow ---- */
@media (max-width: 480px) {
  h1, h2, h3 {
    overflow-wrap: break-word;
    word-break: normal;
    hyphens: none;
  }
  body { overflow-x: hidden; }
}

/* ---- Pricing pills + meta on cards ---- */
@media (max-width: 480px) {
  .article-meta {
    flex-wrap: wrap;
    gap: 8px;
  }
  .article-meta-row {
    flex-wrap: wrap;
  }
}