/* === Design Tokens === */
:root {
  --color-bg: #0a0a0f;
  --color-bg-elevated: #111118;
  --color-bg-card: #16161f;
  --color-bg-card-hover: #1c1c28;
  --color-surface: #1e1e2a;
  --color-border: rgba(255,255,255,0.06);
  --color-border-hover: rgba(255,255,255,0.12);
  --color-text: #e8e8ed;
  --color-text-secondary: #9898a6;
  --color-text-muted: #6b6b7b;
  --color-accent: #6366f1;
  --color-accent-hover: #818cf8;
  --color-accent-subtle: rgba(99,102,241,0.08);
  --color-accent-glow: rgba(99,102,241,0.15);
  --color-success: #34d399;
  --color-white: #ffffff;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --header-h: 72px;
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { font-family: var(--font); background: var(--color-bg); color: var(--color-text); line-height: 1.6; font-size: 16px; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
img { max-width: 100%; display: block; }

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

/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 500; font-size: 14px; border-radius: var(--radius-sm);
  padding: 12px 24px; transition: all var(--transition); cursor: pointer;
  white-space: nowrap; letter-spacing: -0.01em; border: none;
}
.btn--primary { background: var(--color-accent); color: var(--color-white); }
.btn--primary:hover { background: var(--color-accent-hover); transform: translateY(-1px); box-shadow: 0 8px 32px rgba(99,102,241,0.3); }
.btn--outline { background: transparent; color: var(--color-text); border: 1px solid var(--color-border-hover); }
.btn--outline:hover { border-color: var(--color-accent); color: var(--color-accent); }
.btn--white { background: var(--color-white); color: var(--color-bg); }
.btn--white:hover { transform: translateY(-1px); box-shadow: 0 8px 32px rgba(255,255,255,0.15); }
.btn--lg { padding: 16px 32px; font-size: 15px; border-radius: var(--radius-md); }
.btn--full { width: 100%; }

/* === Header === */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10,10,15,0.8); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border); height: var(--header-h);
}
.header__inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.header__logo { font-weight: 600; font-size: 16px; letter-spacing: -0.02em; display: flex; align-items: center; gap: 6px; }
.logo-mark { color: var(--color-accent); font-size: 14px; }
.header__nav { display: flex; gap: 32px; }
.nav-link { font-size: 13px; color: var(--color-text-secondary); transition: color var(--transition); letter-spacing: -0.01em; }
.nav-link:hover { color: var(--color-text); }
.header__right { display: flex; align-items: center; gap: 12px; }
.header__cta { font-size: 13px; padding: 10px 20px; }
.burger { display: none; flex-direction: column; gap: 5px; width: 24px; padding: 4px 0; }
.burger span { display: block; height: 1.5px; background: var(--color-text); transition: all var(--transition); border-radius: 2px; }
.burger.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
.burger.active span:nth-child(2) { opacity: 0; }
.burger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* === Language Switcher === */
.lang-switcher { position: relative; }
.lang-switcher__current {
  display: flex; align-items: center; gap: 6px; padding: 6px 10px;
  border-radius: var(--radius-sm); border: 1px solid var(--color-border);
  color: var(--color-text-secondary); font-size: 12px; font-weight: 500;
  transition: all var(--transition); background: transparent; cursor: pointer;
}
.lang-switcher__current:hover { border-color: var(--color-border-hover); color: var(--color-text); }
.lang-switcher__flag { font-size: 14px; line-height: 1; }
.lang-switcher__code { letter-spacing: 0.04em; }
.lang-switcher__chevron { transition: transform var(--transition); }
.lang-switcher.open .lang-switcher__chevron { transform: rotate(180deg); }
.lang-switcher__dropdown {
  position: absolute; top: calc(100% + 8px); right: 0; min-width: 140px;
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); padding: 4px;
  opacity: 0; visibility: hidden; transform: translateY(-4px);
  transition: all var(--transition); z-index: 101;
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}
.lang-switcher.open .lang-switcher__dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-switcher__option {
  display: flex; align-items: center; gap: 8px; width: 100%; padding: 8px 12px;
  font-size: 13px; color: var(--color-text-secondary); border-radius: 6px;
  transition: all var(--transition); background: none; border: none; cursor: pointer;
}
.lang-switcher__option:hover { background: var(--color-bg-card-hover); color: var(--color-text); }
.lang-switcher__option.active { color: var(--color-accent); }
.lang-switcher__option span { font-size: 16px; }

/* Mobile language buttons */
.mobile-nav__lang { display: flex; gap: 8px; margin-top: 8px; }
.mobile-lang-btn {
  padding: 8px 16px; border-radius: var(--radius-sm); font-size: 13px;
  border: 1px solid var(--color-border); color: var(--color-text-secondary);
  background: transparent; cursor: pointer; transition: all var(--transition);
}
.mobile-lang-btn:hover { border-color: var(--color-border-hover); color: var(--color-text); }
.mobile-lang-btn.active { border-color: var(--color-accent); color: var(--color-accent); background: var(--color-accent-subtle); }

/* === Mobile Nav === */
.mobile-nav {
  position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0; z-index: 99;
  background: rgba(10,10,15,0.95); backdrop-filter: blur(20px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: all var(--transition);
}
.mobile-nav.active { opacity: 1; visibility: visible; }
.mobile-nav__inner { display: flex; flex-direction: column; align-items: center; gap: 24px; }
.mobile-nav__link { font-size: 18px; color: var(--color-text-secondary); transition: color var(--transition); }
.mobile-nav__link:hover { color: var(--color-text); }
.mobile-nav__cta { margin-top: 16px; }

/* === Hero === */
.hero {
  padding: 160px 0 100px; position: relative; overflow: hidden;
  min-height: 85vh; display: flex; align-items: center;
}
.hero__glow {
  position: absolute; top: -200px; left: 50%; transform: translateX(-50%);
  width: 800px; height: 600px;
  background: radial-gradient(ellipse, var(--color-accent-glow), transparent 70%);
  pointer-events: none; opacity: 0.6;
}
.hero__content { position: relative; z-index: 1; max-width: 800px; margin: 0 auto; text-align: center; }
.hero__badge {
  display: inline-block; font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-accent); padding: 8px 16px; border: 1px solid var(--color-accent-subtle);
  border-radius: 100px; margin-bottom: 32px; background: var(--color-accent-subtle);
}
.hero__title { font-size: clamp(28px, 4vw, 44px); font-weight: 600; line-height: 1.2; letter-spacing: -0.03em; margin-bottom: 20px; }
.hero__subtitle { font-size: clamp(15px, 1.6vw, 18px); color: var(--color-text-secondary); line-height: 1.7; margin-bottom: 40px; max-width: 680px; margin-left: auto; margin-right: auto; }
.hero__actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }
.hero__tags { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; font-size: 13px; color: var(--color-text-muted); }
.hero__dot { color: var(--color-border-hover); }

/* === Sections === */
.section { padding: 100px 0; }
.section--dark { background: var(--color-bg-elevated); }
.section--accent {
  background: linear-gradient(135deg, var(--color-accent) 0%, #4f46e5 100%);
  color: var(--color-white);
}
.section--next { padding: 60px 0; border-top: 1px solid var(--color-border); }
.section__header { text-align: center; max-width: 720px; margin: 0 auto 60px; }
.section__title { font-size: clamp(24px, 3vw, 36px); font-weight: 600; letter-spacing: -0.03em; line-height: 1.25; margin-bottom: 16px; }
.section__desc { font-size: 16px; color: var(--color-text-secondary); line-height: 1.7; }
.section--accent .section__desc { color: rgba(255,255,255,0.8); }

/* === Cards Grid === */
.cards { display: grid; gap: 16px; }
.cards--2 { grid-template-columns: repeat(2, 1fr); }
.cards--3 { grid-template-columns: repeat(3, 1fr); }
.cards--4 { grid-template-columns: repeat(4, 1fr); }

/* === Card Styles === */
.card {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 32px; transition: all var(--transition);
}
.card:hover { border-color: var(--color-border-hover); background: var(--color-bg-card-hover); transform: translateY(-2px); }
.card__icon { color: var(--color-accent); margin-bottom: 20px; }
.card__icon-sm { color: var(--color-accent); margin-bottom: 16px; }
.card__number { font-size: 32px; font-weight: 700; color: var(--color-accent-subtle); margin-bottom: 16px; letter-spacing: -0.04em; background: linear-gradient(135deg, var(--color-accent), transparent); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.card__label { display: inline-block; font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--color-accent); margin-bottom: 12px; font-weight: 500; }
.card__meta {
  display: inline-block; margin-bottom: 14px; padding: 6px 10px;
  border-radius: 100px; background: var(--color-accent-subtle);
  color: var(--color-accent); font-size: 11px; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase;
}
.card__title { font-size: 17px; font-weight: 600; margin-bottom: 10px; letter-spacing: -0.02em; line-height: 1.3; }
.card__text { font-size: 14px; color: var(--color-text-secondary); line-height: 1.65; }
.card__list { display: flex; flex-direction: column; gap: 10px; margin-top: 18px; }
.card__list li {
  position: relative; padding-left: 18px;
  font-size: 13px; color: var(--color-text-secondary); line-height: 1.55;
}
.card__list li::before {
  content: '•'; position: absolute; left: 0; top: 0;
  color: var(--color-accent);
}

/* === Process === */
.process { max-width: 640px; margin: 0 auto; }
.process__step { display: flex; gap: 24px; }
.process__marker { display: flex; flex-direction: column; align-items: center; flex-shrink: 0; }
.process__num {
  width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--color-accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 600; color: var(--color-accent); flex-shrink: 0;
  background: var(--color-accent-subtle);
}
.process__line { flex: 1; width: 1px; background: var(--color-border); margin: 8px 0; }
.process__content { padding-bottom: 40px; }
.process__title { font-size: 17px; font-weight: 600; margin-bottom: 8px; letter-spacing: -0.02em; }
.process__text { font-size: 14px; color: var(--color-text-secondary); line-height: 1.65; }

/* === Fit === */
.fit { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.fit__col { padding: 40px; border-radius: var(--radius-lg); border: 1px solid var(--color-border); }
.fit__col--yes { background: rgba(52,211,153,0.04); border-color: rgba(52,211,153,0.15); }
.fit__col--no { background: rgba(255,255,255,0.02); }
.fit__heading { display: flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 600; margin-bottom: 24px; letter-spacing: -0.02em; }
.fit__col--yes .fit__heading svg { color: var(--color-success); }
.fit__col--no .fit__heading svg { color: var(--color-text-muted); }
.fit__list { display: flex; flex-direction: column; gap: 14px; }
.fit__list li { font-size: 14px; color: var(--color-text-secondary); line-height: 1.5; padding-left: 20px; position: relative; }
.fit__list li::before { content: '—'; position: absolute; left: 0; color: var(--color-text-muted); }

/* === About === */
.about__content { max-width: 720px; margin: 0 auto; }
.about__text { font-size: 16px; color: var(--color-text-secondary); line-height: 1.75; margin-bottom: 20px; }
.about__stack { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 32px; }
.about__stack span {
  font-size: 12px; padding: 6px 14px; border-radius: 100px;
  border: 1px solid var(--color-border); color: var(--color-text-muted);
  background: var(--color-bg-card); letter-spacing: 0.02em;
}

/* === Offer === */
.offer { text-align: center; max-width: 640px; margin: 0 auto; }
.offer__title { font-size: clamp(22px, 2.5vw, 30px); font-weight: 600; letter-spacing: -0.03em; margin-bottom: 16px; line-height: 1.3; }
.offer__text { font-size: 16px; opacity: 0.85; margin-bottom: 32px; line-height: 1.7; }
.offer__items { display: flex; flex-direction: column; gap: 16px; text-align: left; max-width: 440px; margin: 0 auto 40px; }
.offer__item { display: flex; align-items: center; gap: 12px; font-size: 15px; }
.offer__check { flex-shrink: 0; color: var(--color-white); }

/* === FAQ === */
.faq { max-width: 680px; margin: 0 auto; }
.faq__item { border-bottom: 1px solid var(--color-border); }
.faq__question {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  padding: 24px 0; font-size: 15px; font-weight: 500; color: var(--color-text);
  text-align: left; cursor: pointer; transition: color var(--transition);
}
.faq__question:hover { color: var(--color-accent); }
.faq__chevron { transition: transform var(--transition); flex-shrink: 0; margin-left: 16px; color: var(--color-text-muted); }
.faq__item.active .faq__chevron { transform: rotate(180deg); }
.faq__answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease; }
.faq__item.active .faq__answer { max-height: 300px; padding-bottom: 24px; }
.faq__answer p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* === Contact === */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.contact__title { font-size: clamp(22px, 2.5vw, 30px); font-weight: 600; letter-spacing: -0.03em; line-height: 1.3; margin-bottom: 16px; }
.contact__text { font-size: 15px; color: var(--color-text-secondary); line-height: 1.7; margin-bottom: 32px; }
.contact__channels { display: flex; flex-direction: column; gap: 12px; }
.contact__channel {
  display: inline-flex; align-items: center; gap: 10px; font-size: 14px;
  color: var(--color-text-secondary); transition: color var(--transition);
}
.contact__channel:hover { color: var(--color-accent); }

/* === Form === */
.form { display: flex; flex-direction: column; gap: 16px; }
.form__group { display: flex; flex-direction: column; gap: 6px; }
.form__label { font-size: 13px; color: var(--color-text-muted); font-weight: 500; }
.form__input {
  padding: 14px 16px; background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); color: var(--color-text); font-size: 14px;
  font-family: var(--font); transition: all var(--transition); outline: none;
}
.form__input:focus { border-color: var(--color-accent); box-shadow: 0 0 0 3px var(--color-accent-subtle); }
.form__input::placeholder { color: var(--color-text-muted); }
.form__textarea { resize: vertical; min-height: 80px; }
.form__note { font-size: 12px; color: var(--color-text-muted); text-align: center; margin-top: 4px; }
.form__input.error { border-color: #ef4444; }
.form__status { min-height: 20px; font-size: 13px; text-align: center; line-height: 1.5; }
.form__status.is-error { color: #f87171; }
.form__status.is-success { color: var(--color-success); }
.form__hp {
  position: absolute; left: -9999px; width: 1px; height: 1px;
  opacity: 0; pointer-events: none;
}

/* === Form Success === */
.form-success { display: none; text-align: center; padding: 60px 20px; }
.form-success.active { display: block; animation: fadeUp 0.5s ease; }
.form-success__icon { color: var(--color-success); margin-bottom: 20px; }
.form-success__title { font-size: 22px; font-weight: 600; margin-bottom: 12px; }
.form-success__text { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }
.form-success__hint { font-size: 13px; color: var(--color-text-muted); line-height: 1.7; margin-top: 14px; }
.form-success__hint a { color: var(--color-accent); }
.form-success__hint a:hover { color: var(--color-accent-hover); }

/* === Next === */
.next { text-align: center; max-width: 560px; margin: 0 auto; }
.next__icon { color: var(--color-accent); margin-bottom: 16px; }
.next__title { font-size: 18px; font-weight: 600; margin-bottom: 12px; letter-spacing: -0.02em; }
.next__text { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* === Footer === */
.footer { padding: 60px 0 40px; border-top: 1px solid var(--color-border); }
.footer__inner { display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: start; }
.footer__logo { font-weight: 600; font-size: 15px; display: flex; align-items: center; gap: 6px; margin-bottom: 12px; }
.footer__desc { font-size: 13px; color: var(--color-text-muted); max-width: 360px; line-height: 1.6; }
.footer__contacts { display: flex; gap: 24px; }
.footer__link { font-size: 13px; color: var(--color-text-secondary); transition: color var(--transition); }
.footer__link:hover { color: var(--color-accent); }
.footer__bottom { grid-column: 1 / -1; padding-top: 32px; border-top: 1px solid var(--color-border); margin-top: 20px; }
.footer__bottom p { font-size: 12px; color: var(--color-text-muted); }

/* === Sticky CTA === */
.sticky-cta {
  display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 90;
  padding: 12px 16px; background: rgba(10,10,15,0.95);
  backdrop-filter: blur(20px); border-top: 1px solid var(--color-border);
  transform: translateY(100%); transition: transform var(--transition);
}
.sticky-cta.visible { transform: translateY(0); }

/* === Reveal Animation === */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* === Animations === */
@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

/* === Header scroll state === */
.header.scrolled { background: rgba(10,10,15,0.95); }

/* === Responsive === */
@media (max-width: 1024px) {
  .cards--2 { grid-template-columns: 1fr; }
  .cards--4 { grid-template-columns: repeat(2, 1fr); }
  .cards--3 { grid-template-columns: repeat(2, 1fr); }
  .contact { grid-template-columns: 1fr; gap: 48px; }
}
@media (max-width: 768px) {
  :root { --header-h: 60px; }
  .header__nav, .header__right { display: none; }
  .burger { display: flex; }
  .hero { padding: 120px 0 72px; min-height: auto; }
  .hero__title { font-size: 26px; }
  .section { padding: 72px 0; }
  .section__header { margin-bottom: 40px; }
  .cards--2, .cards--3, .cards--4 { grid-template-columns: 1fr; }
  .fit { grid-template-columns: 1fr; }
  .fit__col { padding: 28px; }
  .footer__inner { grid-template-columns: 1fr; }
  .footer__contacts { margin-top: 8px; }
  .sticky-cta { display: block; }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; }
  .hero__tags { font-size: 12px; }
  .process__content { padding-bottom: 28px; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .card { padding: 24px; }
  .hero__title { font-size: 22px; }
}