/* =============================================
   RESET & BASE
   ============================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-base:      #0a0a0f;
  --bg-surface:   #12121a;
  --bg-card:      #1a1a2e;
  --bg-card-alt:  #16162a;
  --border:       #2d2d4e;
  --border-light: #3d3d6e;

  --accent-blue:  #4f6ef7;
  --accent-violet:#7c3aed;
  --accent-grad:  linear-gradient(135deg, #4f6ef7, #7c3aed);
  --accent-glow:  rgba(79, 110, 247, 0.25);

  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted:   #64748b;

  --green:        #22c55e;
  --green-bg:     rgba(34, 197, 94, 0.1);
  --green-border: rgba(34, 197, 94, 0.3);

  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  28px;

  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;

  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img, svg {
  display: block;
}

/* =============================================
   CONTAINER
   ============================================= */
.container {
  max-width: 1140px;
  margin-inline: auto;
  padding-inline: 24px;
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

.btn:hover {
  opacity: 0.88;
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
  opacity: 1;
}

.btn--primary {
  background: var(--accent-grad);
  color: #fff;
  box-shadow: 0 4px 24px rgba(79, 110, 247, 0.35);
}

.btn--primary:hover {
  box-shadow: 0 8px 32px rgba(79, 110, 247, 0.5);
}

.btn--lg {
  padding: 16px 36px;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

/* =============================================
   SECTION COMMONS
   ============================================= */
.section {
  padding: 96px 0;
}

.section--alt {
  background-color: var(--bg-surface);
}

.section__label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin-bottom: 16px;
}

.section__title {
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 48px;
}

.section__cta {
  text-align: center;
  margin-top: 48px;
}

.desktop-br {
  display: block;
}

/* =============================================
   HERO
   ============================================= */
.hero {
  position: relative;
  padding: 140px 0 100px;
  overflow: hidden;
}

.hero__glow {
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(79, 110, 247, 0.15) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero__badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(79, 110, 247, 0.12);
  border: 1px solid rgba(79, 110, 247, 0.3);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-blue);
  margin-bottom: 24px;
  letter-spacing: 0.04em;
}

.hero__title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 620px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 44px;
}

.hero__list-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.97rem;
  color: var(--text-secondary);
}

.hero__list-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--green-bg);
  border: 1px solid var(--green-border);
  border-radius: 50%;
  color: var(--green);
  font-size: 0.75rem;
  font-weight: 700;
  margin-top: 2px;
}

/* =============================================
   CARDS GRID
   ============================================= */
.cards-grid {
  display: grid;
  gap: 20px;
}

.cards-grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.cards-grid--5 {
  grid-template-columns: repeat(5, 1fr);
}

/* =============================================
   CARD
   ============================================= */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  border-color: var(--border-light);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.card--accent {
  background: var(--bg-card-alt);
}

.card__icon {
  font-size: 2rem;
  margin-bottom: 16px;
  line-height: 1;
}

.card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.35;
}

.card__text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* =============================================
   CASES
   ============================================= */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.case {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color var(--transition), transform var(--transition);
}

.case:hover {
  border-color: var(--border-light);
  transform: translateY(-3px);
}

.case__badge {
  display: inline-flex;
  align-self: flex-start;
  padding: 4px 12px;
  background: rgba(79, 110, 247, 0.1);
  border: 1px solid rgba(79, 110, 247, 0.25);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-blue);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.case__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
}

.case__text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
}

.case__resolution {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 12px 16px;
  background: var(--green-bg);
  border: 1px solid var(--green-border);
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  color: #86efac;
  line-height: 1.5;
}

.case__resolution-label {
  font-weight: 700;
  color: var(--green);
  flex-shrink: 0;
}

/* =============================================
   STEPS
   ============================================= */
.steps {
  display: flex;
  flex-direction: column;
  max-width: 720px;
}

.step {
  display: flex;
  gap: 20px;
  position: relative;
}

.step:not(:last-child) {
  padding-bottom: 40px;
}

.step__left {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  position: relative;
}

.step__number {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-grad);
  border-radius: 50%;
  font-size: 1rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
  box-shadow: 0 0 0 6px rgba(79, 110, 247, 0.12);
  z-index: 1;
}

.step__connector {
  flex: 1;
  width: 2px;
  background: var(--border);
  margin-top: 8px;
  min-height: 32px;
}

.step__content {
  padding-top: 14px;
  padding-bottom: 0;
}

.step__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.35;
}

.step__text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* =============================================
   CTA SECTION
   ============================================= */
.cta-section {
  background: var(--bg-surface);
}

.cta-block {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 72px 64px;
  text-align: center;
  overflow: hidden;
}

.cta-block__glow {
  position: absolute;
  top: -80px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(124, 58, 237, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta-block__title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
  position: relative;
}

.cta-block__text {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 620px;
  margin-inline: auto;
  margin-bottom: 36px;
  line-height: 1.7;
  position: relative;
}

.cta-block__note {
  margin-top: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
  position: relative;
}

/* =============================================
   CTA FORM (stub)
   ============================================= */
.cta-form {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  margin-bottom: 0;
}

.cta-form__fields {
  flex: 1;
  min-width: 240px;
  max-width: 380px;
}

.cta-form__input {
  width: 100%;
  padding: 16px 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  color: var(--text-primary);
  font-family: var(--font);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.cta-form__input::placeholder {
  color: var(--text-muted);
}

.cta-form__input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(79, 110, 247, 0.15);
}

/* =============================================
   FAQ
   ============================================= */
.faq {
  max-width: 760px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.faq__item {
  border-bottom: 1px solid var(--border);
}

.faq__item:first-child {
  border-top: 1px solid var(--border);
}

.faq__question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 22px 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  font-family: var(--font);
  transition: color var(--transition);
}

.faq__question:hover {
  color: var(--accent-blue);
}

.faq__question[aria-expanded="true"] {
  color: var(--accent-blue);
}

.faq__icon {
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--text-muted);
  flex-shrink: 0;
  line-height: 1;
  transition: transform var(--transition), color var(--transition);
  width: 24px;
  text-align: center;
}

.faq__question[aria-expanded="true"] .faq__icon {
  transform: rotate(45deg);
  color: var(--accent-blue);
}

.faq__answer {
  padding-bottom: 20px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.faq__answer[hidden] {
  display: none;
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer__copy {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer__tg {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.footer__tg:hover {
  color: var(--accent-blue);
}

.footer__tg-icon {
  color: var(--accent-blue);
  flex-shrink: 0;
}

/* =============================================
   SCROLL ANIMATIONS
   ============================================= */
.anim-hidden {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.anim-hidden.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .cards-grid--5 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .section {
    padding: 72px 0;
  }

  .hero {
    padding: 100px 0 80px;
  }

  .cards-grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .cards-grid--5 {
    grid-template-columns: repeat(2, 1fr);
  }

  .cases-grid {
    grid-template-columns: 1fr;
  }

  .cta-block {
    padding: 48px 32px;
  }

  .cta-form {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-form__fields {
    max-width: 100%;
  }

  .desktop-br {
    display: none;
  }
}

@media (max-width: 480px) {
  .container {
    padding-inline: 16px;
  }

  .section {
    padding: 56px 0;
  }

  .hero {
    padding: 80px 0 60px;
  }

  .cards-grid--3,
  .cards-grid--5 {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 24px 20px;
  }

  .cta-block {
    padding: 36px 20px;
  }

  .btn--lg {
    padding: 14px 24px;
    font-size: 1rem;
  }

  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .step {
    gap: 14px;
  }

  .step__number {
    width: 44px;
    height: 44px;
    font-size: 0.85rem;
  }
}