/* ============ RERP · Rakurs — red / black / gray / blue ============ */
:root {
  --red: #e02020;
  --red-dark: #b41414;
  --blue: #1f6feb;
  --blue-dark: #1a56b8;
  --black: #0d0f12;
  --gray-900: #17191f;
  --gray-800: #23262e;
  --gray-700: #343843;
  --gray-500: #6b7280;
  --gray-300: #c9cdd5;
  --gray-100: #eef0f4;
  --white: #ffffff;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(13, 15, 18, 0.10);
  --container: 1160px;
  font-size: 16px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.narrow { max-width: 820px; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  clip: rect(0 0 0 0); overflow: hidden; white-space: nowrap;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-lg { padding: 15px 28px; font-size: 1.02rem; }
.btn-block { width: 100%; }

.btn-primary {
  background: linear-gradient(135deg, var(--red) 0%, var(--red-dark) 100%);
  color: var(--white);
  box-shadow: 0 6px 18px rgba(224, 32, 32, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(224, 32, 32, 0.45); }

.btn-outline {
  border-color: var(--blue);
  color: var(--blue);
  background: transparent;
}
.btn-outline:hover { background: var(--blue); color: var(--white); transform: translateY(-2px); }

.btn-ghost { color: var(--gray-500); background: transparent; }
.btn-ghost:hover { color: var(--black); }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-100);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
}
.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  text-decoration: none;
  color: var(--black);
}
.logo-mark {
  display: inline-grid;
  place-items: center;
  width: 34px; height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--red), var(--red-dark));
  color: var(--white);
  font-weight: 800;
  font-size: 1.1rem;
  align-self: center;
}
.logo-text { font-weight: 800; font-size: 1.35rem; letter-spacing: -0.02em; }
.logo-sub { font-size: 0.72rem; color: var(--gray-500); font-weight: 500; }

.nav { display: flex; gap: 26px; }
.nav a {
  text-decoration: none;
  color: var(--gray-700);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.15s;
}
.nav a:hover { color: var(--red); }

.header-actions { display: flex; align-items: center; gap: 10px; }

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  padding: 8px;
  cursor: pointer;
}
.burger span {
  width: 24px; height: 2.5px;
  background: var(--black);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero {
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(31, 111, 235, 0.14), transparent 60%),
    radial-gradient(700px 420px at -10% 110%, rgba(224, 32, 32, 0.10), transparent 60%),
    linear-gradient(180deg, var(--white) 0%, var(--gray-100) 100%);
  padding: 84px 0 96px;
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: 18px;
}
.dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 4px rgba(224, 32, 32, 0.18);
}
.hero h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  font-weight: 800;
  color: var(--black);
  margin-bottom: 20px;
}
.accent-red { color: var(--red); }
.accent-blue { color: var(--blue); }

.lead {
  font-size: 1.12rem;
  color: var(--gray-700);
  max-width: 540px;
  margin-bottom: 30px;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 26px; }
.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  list-style: none;
  font-size: 0.92rem;
  color: var(--gray-500);
}
.hero-facts li { position: relative; padding-left: 20px; }
.hero-facts li::before {
  content: "✓";
  position: absolute; left: 0;
  color: var(--blue);
  font-weight: 700;
}

/* dashboard mock */
.hero-visual { position: relative; }
.mock {
  background: var(--gray-900);
  border: 1px solid var(--gray-700);
  border-radius: var(--radius);
  box-shadow: 0 30px 60px rgba(13, 15, 18, 0.35);
  overflow: hidden;
  transform: rotate(1.2deg);
}
.mock-topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px;
  background: var(--gray-800);
  border-bottom: 1px solid var(--gray-700);
}
.mock-dots { display: flex; gap: 6px; }
.mock-dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--gray-500); }
.mock-dots i:first-child { background: var(--red); }
.mock-dots i:nth-child(2) { background: #d9a520; }
.mock-dots i:last-child { background: var(--blue); }
.mock-title { color: var(--gray-300); font-size: 0.8rem; font-weight: 500; }
.mock-body { padding: 18px; display: grid; gap: 14px; }
.mock-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.mock-card {
  border-radius: 10px;
  padding: 12px;
  background: var(--gray-800);
  border-top: 3px solid var(--gray-500);
}
.mock-card b { display: block; color: var(--white); font-size: 1.05rem; }
.mock-card span { color: var(--gray-300); font-size: 0.72rem; }
.card-red { border-top-color: var(--red); }
.card-blue { border-top-color: var(--blue); }
.card-gray { border-top-color: var(--gray-500); }
.mock-chart {
  background: var(--gray-800);
  border-radius: 10px;
  padding: 12px;
}
.mock-chart svg { width: 100%; height: 110px; }
.mock-rows { display: grid; gap: 8px; }
.mock-row {
  display: flex; align-items: center; gap: 10px;
  background: var(--gray-800);
  border-radius: 8px;
  padding: 9px 12px;
  color: var(--gray-300);
  font-size: 0.78rem;
}
.mock-row em { margin-left: auto; font-style: normal; color: var(--gray-500); font-size: 0.7rem; white-space: nowrap; }
.pill {
  flex-shrink: 0;
  font-size: 0.66rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 99px;
  color: var(--white);
}
.pill-red { background: var(--red); }
.pill-blue { background: var(--blue); }
.pill-gray { background: var(--gray-500); }

/* ---------- stats ---------- */
.stats { background: var(--black); padding: 40px 0; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat b {
  display: block;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--white);
}
.stat span { color: var(--gray-300); font-size: 0.9rem; }
.stat:nth-child(odd) b { color: #ff5a5a; }
.stat:nth-child(even) b { color: #6ea8ff; }

/* ---------- sections ---------- */
.section { padding: 96px 0; }
.section-gray { background: var(--gray-100); }
.section-dark {
  background:
    radial-gradient(700px 400px at 90% 0%, rgba(31, 111, 235, 0.18), transparent 60%),
    radial-gradient(600px 380px at 0% 100%, rgba(224, 32, 32, 0.16), transparent 60%),
    var(--gray-900);
  color: var(--gray-100);
}
.section-dark h2 { color: var(--white); }
.section-dark .eyebrow { color: var(--gray-300); }
.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-head .eyebrow { justify-content: center; margin-inline: auto; }
.section-head h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  letter-spacing: -0.02em;
  line-height: 1.18;
  color: var(--black);
  margin-bottom: 14px;
}
.section-lead { color: var(--gray-500); font-size: 1.05rem; }
.section-dark .section-lead { color: var(--gray-300); }

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

/* feature cards */
.card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 30px 26px;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.card:hover {
  transform: translateY(-5px);
  border-color: var(--gray-300);
  box-shadow: 0 18px 40px rgba(13, 15, 18, 0.14);
}
.card h3 { font-size: 1.15rem; margin-bottom: 10px; color: var(--black); }
.card p { color: var(--gray-500); font-size: 0.95rem; }

.card-icon {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  border-radius: 12px;
  margin-bottom: 18px;
}
.card-icon svg { width: 26px; height: 26px; }
.icon-red { background: rgba(224, 32, 32, 0.10); color: var(--red); }
.icon-blue { background: rgba(31, 111, 235, 0.10); color: var(--blue); }

/* steps */
.steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  counter-reset: step;
}
.step {
  position: relative;
  background: var(--gray-800);
  border: 1px solid var(--gray-700);
  border-radius: var(--radius);
  padding: 34px 26px 28px;
}
.step-num {
  position: absolute;
  top: -20px; left: 26px;
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 12px;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--white);
  background: linear-gradient(135deg, var(--red), var(--red-dark));
  box-shadow: 0 8px 20px rgba(224, 32, 32, 0.4);
}
.step:nth-child(2) .step-num { background: linear-gradient(135deg, var(--blue), var(--blue-dark)); box-shadow: 0 8px 20px rgba(31, 111, 235, 0.4); }
.step h3 { color: var(--white); font-size: 1.1rem; margin-bottom: 10px; }
.step p { color: var(--gray-300); font-size: 0.93rem; }

/* pricing */
.price-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 34px 28px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.price-card h3 { font-size: 1.05rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--gray-500); margin-bottom: 8px; }
.price b { font-size: 2.1rem; font-weight: 800; color: var(--black); letter-spacing: -0.02em; }
.price span { color: var(--gray-500); font-size: 0.88rem; }
.price-card ul {
  list-style: none;
  margin: 24px 0 28px;
  display: grid; gap: 11px;
  flex: 1;
}
.price-card li {
  position: relative;
  padding-left: 26px;
  color: var(--gray-700);
  font-size: 0.94rem;
}
.price-card li::before {
  content: "";
  position: absolute; left: 0; top: 4px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M5 13l4 4 10-10' fill='none' stroke='%23fff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/10px no-repeat,
    var(--blue);
}
.price-card.featured {
  border: 2px solid var(--red);
  box-shadow: 0 20px 50px rgba(224, 32, 32, 0.18);
}
.price-card.featured li::before { background-color: var(--red); background-position: center; }
.badge {
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  padding: 5px 14px;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--white);
}
.badge-red { background: linear-gradient(135deg, var(--red), var(--red-dark)); }

/* reviews */
.review {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--gray-100);
  border-left: 4px solid var(--blue);
  padding: 28px 26px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.review:nth-child(odd) { border-left-color: var(--red); }
.review blockquote {
  color: var(--gray-700);
  font-size: 0.97rem;
  font-style: italic;
}
.review figcaption { display: flex; align-items: center; gap: 12px; margin-top: auto; }
.review b { display: block; color: var(--black); font-size: 0.95rem; }
.review figcaption span:not(.avatar) { color: var(--gray-500); font-size: 0.83rem; }
.avatar {
  width: 44px; height: 44px;
  flex-shrink: 0;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--av, var(--gray-500));
  color: var(--white);
  font-weight: 700;
  font-size: 0.85rem;
}

/* faq */
.faq-list { display: grid; gap: 14px; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.2s;
}
.faq-item[open] { border-color: var(--blue); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  font-weight: 600;
  color: var(--black);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--red);
  transition: transform 0.2s;
  line-height: 1;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 22px 20px; color: var(--gray-500); font-size: 0.95rem; }

/* cta */
.cta {
  background:
    radial-gradient(600px 300px at 100% 0%, rgba(31, 111, 235, 0.35), transparent 60%),
    linear-gradient(135deg, var(--gray-900) 0%, var(--black) 55%, #2a0d0d 100%);
  color: var(--white);
  padding: 88px 0;
}
.cta-inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
}
.cta h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); letter-spacing: -0.02em; margin-bottom: 12px; }
.cta p { color: var(--gray-300); font-size: 1.05rem; }
.cta-form { display: grid; gap: 14px; }
.cta-form input {
  width: 100%;
  padding: 15px 18px;
  border-radius: 10px;
  border: 1px solid var(--gray-700);
  background: var(--gray-800);
  color: var(--white);
  font-size: 1rem;
  font-family: inherit;
}
.cta-form input::placeholder { color: var(--gray-500); }
.cta-form input:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(31, 111, 235, 0.3);
}
.cta-form input.invalid {
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(224, 32, 32, 0.25);
}
.form-note { font-size: 0.86rem; color: var(--gray-300); min-height: 1.2em; }
.form-note.ok { color: #6ea8ff; }
.form-note.err { color: #ff7a7a; }

/* footer */
.site-footer {
  background: var(--black);
  color: var(--gray-300);
  padding: 64px 0 0;
  border-top: 3px solid var(--red);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.site-footer .logo-text { color: var(--white); }
.footer-brand p { margin-top: 16px; font-size: 0.9rem; color: var(--gray-500); max-width: 300px; }
.footer-col { display: grid; gap: 10px; align-content: start; }
.footer-col h4 {
  color: var(--white);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.footer-col a { color: var(--gray-300); text-decoration: none; font-size: 0.92rem; transition: color 0.15s; }
.footer-col a:hover { color: #ff5a5a; }
.muted { color: var(--gray-500); font-size: 0.85rem; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 20px 24px;
  border-top: 1px solid var(--gray-800);
  font-size: 0.83rem;
  color: var(--gray-500);
}
.footer-links a { color: var(--gray-500); text-decoration: none; }
.footer-links a:hover { color: var(--white); }

/* reveal animation */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }
.delay-1 { transition-delay: 0.12s; }
.delay-2 { transition-delay: 0.24s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- responsive ---------- */
@media (max-width: 1020px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { max-width: 560px; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step:nth-child(3) { grid-column: span 2; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .nav {
    position: fixed;
    inset: 72px 0 auto 0;
    flex-direction: column;
    gap: 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-100);
    box-shadow: 0 20px 40px rgba(13, 15, 18, 0.15);
    transform: translateY(-110%);
    transition: transform 0.25s ease;
    z-index: 40;
  }
  .nav.open { transform: none; }
  .nav a { padding: 16px 24px; border-bottom: 1px solid var(--gray-100); }
  .burger { display: flex; }
  .btn-ghost { display: none; }
  .header-actions .btn-primary { padding: 10px 16px; font-size: 0.85rem; }

  .hero { padding: 56px 0 72px; }
  .section { padding: 68px 0; }
  .grid-3, .steps { grid-template-columns: 1fr; }
  .step:nth-child(3) { grid-column: auto; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-inner { grid-template-columns: 1fr; gap: 32px; }
  .mock-cards { grid-template-columns: 1fr 1fr; }
  .mock-card:last-child { grid-column: span 2; }
}

@media (max-width: 480px) {
  .hero-cta .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { justify-content: center; text-align: center; }
}