:root {
  --bg: #08080b;
  --bg-alt: #0e0e13;
  --card: #131318;
  --border: #232330;
  --text: #f5f5f7;
  --text-soft: #9ca0ae;
  --accent: #6c5ce7;
  --accent-hover: #7d6ef0;
  --radius: 14px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter", Helvetica, Arial, sans-serif;
  line-height: 1.5;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 { margin: 0; font-weight: 700; letter-spacing: -0.02em; }
p { margin: 0; color: var(--text-soft); }

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(8, 8, 11, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
}
.logo__mark {
  width: 30px;
  height: 30px;
  color: var(--text);
}
.logo__text {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
}
.nav__links {
  display: flex;
  gap: 28px;
  flex: 1;
  justify-content: center;
}
.nav__links a {
  color: var(--text-soft);
  text-decoration: none;
  font-size: 14px;
}
.nav__links a:hover { color: var(--text); }
.nav__cta { white-space: nowrap; }

@media (max-width: 860px) {
  .nav__links { display: none; }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 24px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:active { transform: scale(0.98); }
.btn--primary {
  background: var(--accent);
  color: #fff;
}
.btn--primary:hover { background: var(--accent-hover); }
.btn--secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn--secondary:hover { border-color: var(--text-soft); }
.btn--ghost {
  background: #fff;
  color: #08080b;
}
.btn--ghost:hover { background: #e4e4e7; }
.btn--full { width: 100%; }

/* Hero */
.hero {
  padding: 96px 0 80px;
  background: radial-gradient(circle at 50% -10%, rgba(108,92,231,0.25), transparent 60%);
}
.hero__inner { text-align: center; max-width: 760px; margin: 0 auto; }
.eyebrow {
  display: inline-block;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}
.hero h1 {
  font-size: 48px;
  line-height: 1.1;
  margin-bottom: 20px;
}
.hero__sub {
  font-size: 18px;
  margin-bottom: 36px;
}
.hero__actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 640px) {
  .hero h1 { font-size: 32px; }
  .hero__sub { font-size: 16px; }
}

/* Sections */
section { padding: 88px 0; }
section h2 {
  font-size: 32px;
  text-align: center;
  margin-bottom: 12px;
}
.section__sub {
  text-align: center;
  font-size: 16px;
  margin-bottom: 48px;
}
.advantages h2 { margin-bottom: 48px; }

.grid { display: grid; gap: 20px; }
.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: 860px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.card .check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(108, 92, 231, 0.15);
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 14px;
}
.card p { color: var(--text); font-size: 15px; }

/* How it works */
.how { background: var(--bg-alt); }
.step {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.step__num {
  display: block;
  color: var(--accent);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.step h3 { font-size: 17px; margin-bottom: 8px; }
.step p { font-size: 14px; }

/* Demo */
.demo {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 24px;
  align-items: start;
}

.demo__tabs {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.demo__tab {
  text-align: left;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  cursor: pointer;
  font-family: inherit;
  color: inherit;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.demo__tab:hover { border-color: var(--text-soft); }
.demo__tab.active {
  border-color: var(--accent);
  background: rgba(108, 92, 231, 0.08);
}
.demo__tab h3 { font-size: 16px; margin-bottom: 6px; }
.demo__tab p { font-size: 13px; }

.demo__screen {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
}

.demo__app {
  display: grid;
  grid-template-columns: 160px 1fr;
  background: #0b0b10;
  border-radius: 10px;
  overflow: hidden;
  min-height: 420px;
}

.demo__sidebar {
  background: #0e0e13;
  border-right: 1px solid var(--border);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.demo__sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 13px;
}
.demo__sidebar-badge {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
}
.demo__sidebar-balance {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  color: var(--text-soft);
  border-bottom: 1px solid var(--border);
  padding-bottom: 16px;
}
.demo__sidebar-balance strong { color: var(--text); font-size: 15px; }
.demo__nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.demo__nav-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-soft);
  margin: 10px 0 2px;
}
.demo__nav-item {
  font-size: 12.5px;
  color: var(--text-soft);
  padding: 8px 10px;
  border-radius: 8px;
}
.demo__nav-item.is-current {
  background: rgba(108, 92, 231, 0.18);
  color: var(--text);
}

.demo__panel {
  display: none;
  background: #f7f7f9;
  color: #1a1a1f;
  padding: 24px;
}
.demo__panel.is-active { display: block; }

.demo__topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.demo__title { font-weight: 700; font-size: 16px; }
.demo__count { font-size: 12px; color: #6b6f7b; }

.demo__search {
  background: #fff;
  border: 1px solid #e3e3e8;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13px;
  color: #9a9da6;
  margin-bottom: 16px;
}

.demo__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}
.demo__stat {
  background: #fff;
  border: 1px solid #e3e3e8;
  border-radius: 10px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.demo__stat span { font-size: 10px; text-transform: uppercase; letter-spacing: 0.05em; color: #9a9da6; }
.demo__stat strong { font-size: 17px; }
.demo__positive { color: #1a9c5b; }

.demo__table {
  background: #fff;
  border: 1px solid #e3e3e8;
  border-radius: 10px;
  overflow: hidden;
}
.demo__row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  font-size: 13px;
  border-bottom: 1px solid #eeeef1;
}
.demo__row:last-child { border-bottom: none; }
.demo__row--head {
  color: #9a9da6;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: #fafafb;
}
.demo__row--success { border-left: 3px solid #1a9c5b; }
.demo__row--danger { border-left: 3px solid #e0473f; }

.demo__tag {
  display: inline-flex;
  align-self: start;
  background: #fdeeee;
  color: #c94b3f;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 6px;
}

.demo__badge {
  display: inline-flex;
  align-self: start;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
}
.demo__badge--success { background: #e5f7ee; color: #1a9c5b; }
.demo__badge--danger { background: #fbeaea; color: #e0473f; }

.demo__mini-btn {
  justify-self: end;
  background: #16161a;
  color: #fff;
  border: none;
  border-radius: 7px;
  padding: 7px 12px;
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
}
.demo__mini-btn--full {
  justify-self: stretch;
  width: 100%;
  padding: 12px;
  margin-top: 12px;
  background: var(--accent);
}

.demo__summary {
  margin-top: 16px;
  background: #fff;
  border: 1px solid #e3e3e8;
  border-radius: 10px;
  padding: 16px;
}
.demo__summary div {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  padding: 6px 0;
  color: #6b6f7b;
}
.demo__summary strong { color: #1a1a1f; }

@media (max-width: 960px) {
  .demo { grid-template-columns: 1fr; }
  .demo__app { grid-template-columns: 1fr; }
  .demo__sidebar { display: none; }
  .demo__row { grid-template-columns: 1.6fr 1fr 1fr; font-size: 12px; }
  .demo__row span:nth-child(4), .demo__row .demo__mini-btn { display: none; }
  .demo__row--head span:nth-child(4) { display: none; }
}

/* Services */
.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.service-card h3 { font-size: 20px; margin-bottom: 12px; }
.service-card p { font-size: 15px; margin-bottom: 20px; }
.link-arrow {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}
.link-arrow:hover { color: var(--accent-hover); }

/* Contact */
.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.contact h2 { text-align: left; font-size: 32px; margin-bottom: 12px; }
.contact__text p { font-size: 16px; margin-bottom: 32px; }
.contact__list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 16px; }
.contact__list li {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  padding-bottom: 14px;
  font-size: 15px;
}
.contact__list span { color: var(--text-soft); }
.contact__list a { color: var(--text); text-decoration: none; font-weight: 600; }
.contact__list a:hover { color: var(--accent); }

.contact__form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.contact__form label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
  color: var(--text-soft);
}
.contact__form input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 13px 14px;
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
}
.contact__form input:focus {
  outline: none;
  border-color: var(--accent);
}
.form__hint {
  text-align: center;
  font-size: 13px;
  margin: 0;
}

@media (max-width: 860px) {
  .contact__inner { grid-template-columns: 1fr; }
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-soft);
}