/* =============================================
   RATEL SOFTWARE — Main Stylesheet
   ============================================= */

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

:root {
  --bg:         #09090f;
  --bg-alt:     #0e0e18;
  --card:       #13131f;
  --card-hover: #181827;
  --border:     rgba(255, 255, 255, 0.07);
  --border-mid: rgba(255, 255, 255, 0.12);

  --accent:     #6366f1;
  --accent-2:   #8b5cf6;
  --accent-glow:rgba(99, 102, 241, 0.35);

  --text:       #f1f5f9;
  --text-muted: #94a3b8;
  --text-faint: #475569;

  --radius-sm:  8px;
  --radius:     14px;
  --radius-lg:  22px;

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

  --transition: 0.25s ease;
  --shadow-card: 0 4px 24px rgba(0,0,0,0.45);
  --shadow-glow: 0 0 40px var(--accent-glow);
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

/* --- Typography --- */
h1 { font-size: clamp(2.4rem, 5.5vw, 4.2rem); font-weight: 800; line-height: 1.1; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); font-weight: 700; line-height: 1.2; letter-spacing: -0.015em; }
h3 { font-size: 1.15rem; font-weight: 600; line-height: 1.35; }

.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-2), #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Layout --- */
.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}
.section--alt {
  background: var(--bg-alt);
}

.section__header {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 60px;
}
.section__tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(99,102,241,0.1);
  border: 1px solid rgba(99,102,241,0.25);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}
.section__title { margin-bottom: 16px; }
.section__sub { color: var(--text-muted); font-size: 1.05rem; }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  font-family: var(--font);
}
.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 4px 20px rgba(99,102,241,0.4);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(99,102,241,0.55);
}
.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-mid);
}
.btn--ghost:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.2);
}
.btn--sm { padding: 9px 20px; font-size: 0.875rem; }
.btn--full { width: 100%; }

/* =============================================
   HEADER
   ============================================= */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 0;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}
.header.scrolled {
  background: rgba(9, 9, 15, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
  padding: 12px 0;
}
.header__inner {
  display: flex;
  align-items: center;
  gap: 32px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo__icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem; font-weight: 800; color: #fff;
  letter-spacing: -0.02em;
}
.logo__text {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-muted);
}
.logo__text strong {
  font-weight: 700;
  color: var(--text);
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.nav__link {
  padding: 7px 14px;
  font-size: 0.9rem;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.nav__link:hover {
  color: var(--text);
  background: rgba(255,255,255,0.06);
}

.header__cta { flex-shrink: 0; }

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.burger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =============================================
   HERO
   ============================================= */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 130px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 60% 20%, rgba(99,102,241,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(139,92,246,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
  flex: 1;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
  width: fit-content;
}

.hero__title { margin-bottom: 22px; }

.hero__sub {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 52px;
}

.hero__stats {
  display: flex;
  align-items: center;
  gap: 24px;
}
.stat { text-align: center; }
.stat__num {
  font-size: 1.9rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat__sym {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
}
.stat__label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-top: 2px;
}
.stat__divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* Mockup Visual */
.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.mockup {
  width: 100%;
  max-width: 440px;
  background: var(--card);
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card), var(--shadow-glow);
}
.mockup__bar {
  background: rgba(255,255,255,0.04);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 7px;
  border-bottom: 1px solid var(--border);
}
.mockup__bar span {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
}
.mockup__bar span:nth-child(1) { background: #ff5f57; }
.mockup__bar span:nth-child(2) { background: #febc2e; }
.mockup__bar span:nth-child(3) { background: #28c840; }

.mockup__screen { padding: 24px; }
.mockup__line {
  height: 12px;
  background: linear-gradient(90deg, rgba(99,102,241,0.3), rgba(139,92,246,0.15));
  border-radius: 6px;
  margin-bottom: 14px;
}
.mockup__line--wide { width: 75%; }
.mockup__line--mid  { width: 55%; }
.mockup__line--short { width: 40%; margin-top: 20px; }

.mockup__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 20px 0;
}
.mockup__card {
  height: 70px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.mockup__btn {
  height: 36px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: var(--radius-sm);
  width: 45%;
  margin-top: 16px;
  opacity: 0.7;
}

.hero__badge-float {
  position: absolute;
  background: var(--card);
  border: 1px solid var(--border-mid);
  border-radius: 8px;
  padding: 7px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  box-shadow: var(--shadow-card);
  animation: float 6s ease-in-out infinite;
}
.hero__badge-float--1 { top: 10%;  left: -10%; animation-delay: 0s; }
.hero__badge-float--2 { top: 30%;  right: -8%; animation-delay: 1.5s; }
.hero__badge-float--3 { bottom: 25%; left: -12%; animation-delay: 3s; }
.hero__badge-float--4 { bottom: 10%; right: -5%; animation-delay: 4.5s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}

.hero__scroll-hint {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--text-faint);
  margin-top: 40px;
  animation: fadeInDown 1s ease 1.5s both;
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* =============================================
   SERVICES
   ============================================= */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(99,102,241,0.06), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.service-card:hover {
  background: var(--card-hover);
  border-color: rgba(99,102,241,0.3);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}
.service-card:hover::before { opacity: 1; }

.service-card__icon {
  width: 48px; height: 48px;
  background: rgba(99,102,241,0.1);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
  transition: background var(--transition);
}
.service-card__icon svg {
  width: 24px; height: 24px;
  stroke: var(--accent);
}
.service-card:hover .service-card__icon {
  background: rgba(99,102,241,0.2);
}

.service-card h3 { margin-bottom: 10px; }
.service-card > p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 18px;
  line-height: 1.6;
}
.service-card__list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.service-card__list li {
  font-size: 0.825rem;
  color: var(--text-faint);
  display: flex;
  align-items: center;
  gap: 8px;
}
.service-card__list li::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  opacity: 0.7;
}

/* =============================================
   PORTFOLIO
   ============================================= */
.portfolio__filters {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 8px 20px;
  font-size: 0.875rem;
  font-weight: 500;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 100px;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
}
.filter-btn:hover,
.filter-btn--active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.portfolio-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
}
.portfolio-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.5);
  border-color: var(--border-mid);
}
.portfolio-card.hidden { display: none; }

.portfolio-card__img {
  height: 200px;
  background: linear-gradient(135deg,
    hsl(calc(var(--hue)), 60%, 15%),
    hsl(calc(var(--hue) + 30), 50%, 22%)
  );
  position: relative;
  overflow: hidden;
}
.portfolio-card__img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255,255,255,0.03) 0%,
    transparent 50%,
    rgba(0,0,0,0.2) 100%
  );
}

.portfolio-card__overlay {
  position: absolute;
  bottom: 12px; left: 12px;
  z-index: 1;
}
.portfolio-card__tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.1);
}

.portfolio-card__info { padding: 20px; }
.portfolio-card__info h3 {
  margin-bottom: 8px;
  font-size: 1rem;
}
.portfolio-card__info p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 14px;
  line-height: 1.55;
}
.portfolio-card__tech {
  display: flex;
  gap: 7px;
  flex-wrap: wrap;
}
.portfolio-card__tech span {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 100px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

/* =============================================
   ABOUT
   ============================================= */
.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about__content .section__tag { margin-bottom: 12px; }
.about__content .section__title { margin-bottom: 20px; }
.about__text {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: 14px;
}
.about__values {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 28px;
}
.value-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.value-item svg {
  width: 18px; height: 18px;
  stroke: var(--accent);
  flex-shrink: 0;
}

.about__stats-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.about__stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: border-color var(--transition);
}
.about__stat-card:hover {
  border-color: rgba(99,102,241,0.3);
}
.about__stat-num {
  font-size: 2.4rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.about__stat-card span:nth-child(2) {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
}
.about__stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-faint);
  margin-top: 6px;
}

/* =============================================
   WHY US
   ============================================= */
.why__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.why-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: all var(--transition);
}
.why-card:hover {
  border-color: rgba(99,102,241,0.3);
  background: var(--card-hover);
  transform: translateY(-3px);
}
.why-card__num {
  font-size: 2.2rem;
  font-weight: 900;
  color: rgba(99,102,241,0.15);
  margin-bottom: 16px;
  letter-spacing: -0.04em;
  line-height: 1;
}
.why-card h3 { margin-bottom: 10px; font-size: 1rem; }
.why-card p { color: var(--text-muted); font-size: 0.875rem; line-height: 1.6; }

/* =============================================
   TESTIMONIALS
   ============================================= */
.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
}
.testimonial-card:hover {
  border-color: var(--border-mid);
  transform: translateY(-3px);
}
.testimonial-card__stars {
  color: #f59e0b;
  font-size: 0.9rem;
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.testimonial-card__text {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 22px;
  font-style: italic;
}
.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.testimonial-card__avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}
.testimonial-card__author strong {
  display: block;
  font-size: 0.9rem;
}
.testimonial-card__author span {
  font-size: 0.8rem;
  color: var(--text-faint);
}

/* =============================================
   CTA SECTION
   ============================================= */
.cta-section {
  padding: 100px 0;
  background: var(--bg-alt);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 50%, rgba(99,102,241,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.cta-section__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.cta-section__content h2 { margin-bottom: 18px; }
.cta-section__content p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.cta-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.cta-form__input {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.95rem;
  padding: 13px 16px;
  font-family: var(--font);
  transition: border-color var(--transition);
  outline: none;
  resize: none;
}
.cta-form__input::placeholder { color: var(--text-faint); }
.cta-form__input:focus { border-color: var(--accent); }
.cta-form__textarea { min-height: 90px; }
.cta-form__note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-faint);
  margin-top: -4px;
}

/* Success state */
.cta-form.submitted { text-align: center; padding: 40px 0; }
.cta-form__success {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.cta-form__success-icon {
  width: 56px; height: 56px;
  background: rgba(99,102,241,0.1);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid rgba(99,102,241,0.3);
}
.cta-form__success-icon svg {
  width: 26px; height: 26px;
  stroke: var(--accent);
}
.cta-form__success h3 { margin-bottom: 6px; }
.cta-form__success p { color: var(--text-muted); font-size: 0.9rem; }

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 60px 0 40px;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 60px;
}
.footer__tagline {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-top: 10px;
  margin-bottom: 20px;
}
.footer__copy {
  font-size: 0.8rem;
  color: var(--text-faint);
}
.footer__nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer__nav-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  margin-bottom: 6px;
}
.footer__nav a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer__nav a:hover { color: var(--text); }

/* =============================================
   SEO ARTICLE
   ============================================= */
.seo-section {
  padding: 80px 0 72px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.seo-article__title {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 700;
  margin-bottom: 36px;
  letter-spacing: -0.01em;
  color: var(--text);
}
.seo-article__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.seo-article__col p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 18px;
}
.seo-article__col p:last-child { margin-bottom: 0; }
.seo-link {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition);
}
.seo-link:hover { color: var(--accent-2); }
.seo-article__col h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin: 26px 0 12px;
}

/* =============================================
   FAQ
   ============================================= */
.faq-section {
  padding: 80px 0;
}
.faq__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 0;
}
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: rgba(99,102,241,0.35); }

.faq-item__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  background: none;
  border: none;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  text-align: left;
  transition: color var(--transition);
}
.faq-item__q:hover { color: var(--accent); }
.faq-item.open .faq-item__q { color: var(--accent); }

.faq-item__icon {
  width: 18px; height: 18px;
  flex-shrink: 0;
  stroke: currentColor;
  transition: transform var(--transition);
}
.faq-item.open .faq-item__icon { transform: rotate(180deg); }

.faq-item__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 22px;
}
.faq-item.open .faq-item__a {
  max-height: 300px;
  padding: 0 22px 18px;
}
.faq-item__a p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.75;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

/* =============================================
   SCROLL REVEAL ANIMATION
   ============================================= */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .services__grid    { grid-template-columns: repeat(2, 1fr); }
  .portfolio__grid   { grid-template-columns: repeat(2, 1fr); }
  .why__grid         { grid-template-columns: repeat(2, 1fr); }
  .faq__grid         { grid-template-columns: 1fr; }
  .seo-article__body { grid-template-columns: 1fr; gap: 0; }
}

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

  /* Header */
  .header__cta { display: none; }
  .burger { display: flex; }
  .nav {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(9, 9, 15, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 12px;
    z-index: 99;
  }
  .nav.open { display: flex; }
  .nav__link { font-size: 1.4rem; padding: 12px 24px; }

  /* Hero */
  .hero { padding: 110px 0 60px; }
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero__visual { display: none; }
  .hero__stats { gap: 16px; }

  /* Grids */
  .services__grid    { grid-template-columns: 1fr; }
  .portfolio__grid   { grid-template-columns: 1fr; }
  .testimonials__grid{ grid-template-columns: 1fr; }
  .why__grid         { grid-template-columns: 1fr 1fr; }
  .about__inner      { grid-template-columns: 1fr; gap: 48px; }
  .cta-section__inner{ grid-template-columns: 1fr; gap: 48px; }
  .footer__inner     { grid-template-columns: 1fr; gap: 36px; }
  .about__stats-block{ grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  h1 { font-size: 2.2rem; }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; justify-content: center; }
  .hero__stats { justify-content: center; }
  .why__grid { grid-template-columns: 1fr; }
  .about__stats-block{ grid-template-columns: 1fr 1fr; }
}