/* ВАСТ landing — dark graphite theme */
:root {
  --bg: #1a1d24;
  --bg-soft: #22262f;
  --bg-card: #2a2f3a;
  --bg-callout: #f4f5f7;
  --ink: #eef0f4;
  --ink-soft: #a8b0bd;
  --accent: #f59e0b;
  --accent-hover: #fbbf24;
  --accent-muted: rgba(245, 158, 11, 0.15);
  --border: rgba(255, 255, 255, 0.08);
  --radius: 14px;
  --radius-btn: 10px;
  --max: 1140px;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.3; }

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 16px;
  font-family: inherit;
  cursor: pointer;
  border: none;
  text-align: center;
  transition: opacity 0.2s, transform 0.15s, background 0.2s;
}
.btn:hover { text-decoration: none; opacity: 0.95; }
.btn-primary {
  background: var(--accent);
  color: #1a1d24 !important;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary {
  background: transparent;
  color: var(--ink) !important;
  border: 1.5px solid var(--border);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent) !important; }
.btn-lg { padding: 16px 28px; font-size: 17px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(26, 29, 36, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}
.brand-lockup { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.logo { font-weight: 800; font-size: 22px; color: var(--ink); letter-spacing: 0.04em; }
.descriptor { font-size: 14px; color: var(--ink-soft); max-width: 220px; line-height: 1.35; }

/* Hero */
.hero {
  padding: 56px 0 72px;
  background: var(--bg);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.hero-copy { text-align: left; }
.hero h1 {
  font-size: clamp(26px, 3.8vw, 38px);
  margin: 0 0 20px;
  font-weight: 800;
}
.hero h2 {
  font-size: clamp(16px, 2vw, 18px);
  font-weight: 400;
  color: var(--ink-soft);
  margin: 0 0 24px;
  line-height: 1.6;
}
.hero-list {
  margin: 0 0 32px;
  padding-left: 20px;
  color: var(--ink-soft);
}
.hero-list li { margin-bottom: 10px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; }

.conveyor {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 24px;
  background: var(--bg-soft);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.conveyor-step {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: var(--bg-card);
  border-radius: 10px;
  font-weight: 600;
  font-size: 16px;
}
.conveyor-step-accent {
  background: var(--accent-muted);
  border: 1px solid var(--accent);
  color: var(--accent);
}
.conveyor-icon { font-size: 24px; }
.conveyor-arrow {
  width: 2px;
  height: 20px;
  background: var(--accent);
  margin: 4px auto;
  opacity: 0.5;
}

/* Sections */
.section { padding: 64px 0; }
.section-alt { background: var(--bg-soft); }
.section-lead {
  color: var(--ink-soft);
  max-width: 820px;
  margin: 0 0 36px;
  font-size: 17px;
}
h2 {
  font-size: clamp(24px, 3.2vw, 32px);
  margin: 0 0 16px;
  font-weight: 700;
}

/* Problems */
.problems-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
  align-items: start;
}
.problems-intro p { color: var(--ink-soft); margin: 0; }
.problems-cards { display: flex; flex-direction: column; gap: 14px; }
.problem-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
}
.problem-card p { margin: 0; color: var(--ink-soft); }

/* Pipeline */
.pipeline-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}
.pipeline-col {
  padding: 28px 24px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: relative;
}
.pipeline-col:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -24px;
  width: 16px;
  height: 2px;
  background: var(--accent);
  opacity: 0.6;
}
.pipeline-col h3 { margin: 0 0 12px; font-size: 18px; }
.pipeline-col p { margin: 0; color: var(--ink-soft); font-size: 15px; }

/* Split 50/50 */
.split-50 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.check-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.check-list li {
  margin-bottom: 16px;
  color: var(--ink-soft);
  padding-left: 0;
}
.split-media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  display: block;
}

/* Cases */
.cases-stack { display: flex; flex-direction: column; gap: 16px; }
.case-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.case-cell {
  padding: 24px;
  border-right: 1px solid var(--border);
}
.case-cell:last-child { border-right: none; }
.case-cell h3 {
  margin: 0 0 8px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
}
.case-cell p { margin: 0; color: var(--ink-soft); font-size: 15px; }

/* Plans */
.plans-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: start;
  margin-top: 32px;
}
.plan {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.plan-featured {
  transform: translateY(-12px);
  border-color: var(--accent);
  box-shadow: 0 12px 40px rgba(245, 158, 11, 0.15);
  position: relative;
}
.plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #1a1d24;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 4px 14px;
  border-radius: 6px;
}
.plan h3 { margin: 8px 0 4px; font-size: 20px; }
.plan-label { color: var(--ink-soft); font-size: 14px; margin: 0 0 16px; }
.plan-prices { margin-bottom: 20px; }
.price-num { font-size: 28px; font-weight: 800; color: var(--ink); }
.price-note { display: block; font-size: 13px; color: var(--ink-soft); margin-top: 2px; }
.price-setup { margin: 0 0 12px; }
.price-month { margin: 0; }
.plan ul {
  padding-left: 18px;
  margin: 0 0 24px;
  color: var(--ink-soft);
  font-size: 15px;
  flex: 1;
}
.plan .btn { width: 100%; margin-top: auto; }

/* Guarantee */
.section-guarantee { background: var(--bg-soft); }
.guarantee-grid {
  display: grid;
  grid-template-columns: 40% 60%;
  gap: 32px;
  align-items: stretch;
}
.guarantee-left p { color: var(--ink-soft); margin: 0; }
.guarantee-callout {
  background: var(--bg-callout);
  color: #1a1d24;
  border-radius: var(--radius);
  padding: 32px 28px;
  border-left: 4px solid var(--accent);
}
.guarantee-callout h3 { margin: 0 0 12px; font-size: 18px; color: #1a1d24; }
.guarantee-callout p { margin: 0; color: #4b5260; font-size: 15px; line-height: 1.65; }

/* FAQ */
.faq-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 22px;
  background: var(--bg-soft);
  margin-bottom: 12px;
}
.faq-item summary {
  font-weight: 600;
  cursor: pointer;
  font-size: 16px;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item p { color: var(--ink-soft); margin: 14px 0 0; font-size: 15px; }

/* Quiz section */
.section-quiz { background: var(--bg); }
.quiz-final-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}
.founder-photo {
  width: 100%;
  max-width: 320px;
  height: auto;
  border-radius: var(--radius);
  display: block;
  margin-bottom: 20px;
  opacity: 0.92;
}
.founder-info p { color: var(--ink-soft); font-size: 15px; margin: 0 0 10px; }
.quiz-intro-title { font-weight: 600; color: var(--ink); margin: 0 0 8px; }
.quiz-intro-sub { color: var(--ink-soft); margin: 0 0 24px; font-size: 15px; }

/* Quiz card */
.quiz-card { max-width: 100%; }
.quiz-progress {
  height: 4px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  margin-bottom: 12px;
  overflow: hidden;
}
.quiz-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.35s ease;
}
.quiz-step-counter {
  color: var(--ink-soft);
  font-size: 13px;
  margin-bottom: 20px;
}
.quiz-step { display: none; }
.quiz-step.active { display: block; animation: fadeUp 0.3s ease; }
.quiz-step h3 {
  margin: 0 0 20px;
  font-size: clamp(18px, 2.5vw, 22px);
}
.quiz-hint { color: var(--ink-soft); font-size: 14px; margin: -8px 0 16px; }
.quiz-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}
.quiz-options button {
  min-height: 56px;
  text-align: left;
  padding: 14px 16px;
  background: var(--bg-soft);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
  line-height: 1.35;
  transition: border-color 0.2s, background 0.2s;
}
.quiz-options button:hover,
.quiz-options button.selected {
  border-color: var(--accent);
  background: var(--accent-muted);
}
.quiz-other {
  width: 100%;
  padding: 14px 16px;
  margin-bottom: 12px;
  background: var(--bg-soft);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  color: var(--ink);
  font: inherit;
}
.quiz-next { margin-top: 8px; }
.quiz-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.quiz-contact input[type="text"],
.quiz-contact input[type="tel"] {
  width: 100%;
  min-height: 52px;
  padding: 0 16px;
  background: var(--bg-soft);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  color: var(--ink);
  font: inherit;
}
.quiz-contact input:focus { outline: none; border-color: var(--accent); }
.messenger-fieldset {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin: 0;
}
.messenger-fieldset legend { font-size: 14px; color: var(--ink-soft); padding: 0 6px; }
.messenger-fieldset label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-right: 16px;
  margin-top: 8px;
  cursor: pointer;
  font-size: 15px;
}
.quiz-contacts-small {
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 16px;
}
.quiz-thanks h3 { margin: 0 0 10px; }
.quiz-thanks p { color: var(--ink-soft); margin: 0; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Modal */
.quiz-modal {
  border: none;
  padding: 0;
  max-width: 640px;
  width: calc(100% - 32px);
  background: var(--bg-soft);
  color: var(--ink);
  border-radius: var(--radius);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
}
.quiz-modal::backdrop { background: rgba(0, 0, 0, 0.65); }
.quiz-modal-inner { padding: 28px 24px 32px; position: relative; max-height: 90vh; overflow-y: auto; }
.quiz-modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  color: var(--ink-soft);
  font-size: 28px;
  cursor: pointer;
  line-height: 1;
  padding: 4px;
}
.quiz-modal h2 { font-size: 22px; margin: 0 32px 8px 0; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  font-size: 14px;
  color: var(--ink-soft);
}
.site-footer p { margin: 0; }

/* Responsive */
@media (max-width: 960px) {
  .hero-grid,
  .problems-grid,
  .split-50,
  .pipeline-grid,
  .plans-row,
  .guarantee-grid,
  .quiz-final-grid {
    grid-template-columns: 1fr;
  }
  .pipeline-col:not(:last-child)::after { display: none; }
  .plan-featured { transform: none; }
  .case-row { grid-template-columns: 1fr; }
  .case-cell { border-right: none; border-bottom: 1px solid var(--border); }
  .case-cell:last-child { border-bottom: none; }
  .descriptor { display: none; }
  .hero-visual { order: -1; }
  .conveyor { flex-direction: row; flex-wrap: wrap; justify-content: center; }
  .conveyor-arrow { width: 20px; height: 2px; margin: auto 4px; }
}

@media (max-width: 640px) {
  .hero { padding: 40px 0 48px; }
  .section { padding: 48px 0; }
  .quiz-options { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; }
}