/**
 * Easy Quant Landing
 * Структура — по аналогии с TG-ботом (WELCOME_NEW, PRICING)
 * Палитра: акцент #40A7E3, фон #F5F5F5, карточки #FFF, Inter font
 */

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap");

:root {
  --bg: #f5f5f5;
  --bg-card: #ffffff;
  --bg-soft: #f0f6fb;
  --border: #e8e8e8;
  --border-subtle: #ebebeb;
  --text: #0a0a0a;
  --text-secondary: #5a5a64;
  --text-hint: #8e8e93;
  --primary: #40a7e3;
  --primary-hover: #2c95d4;
  --primary-soft: rgba(64, 167, 227, 0.12);
  --primary-soft-strong: rgba(64, 167, 227, 0.22);
  --accent-dark: #1a78b3;
  --radius: 14px;
  --radius-sm: 10px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 6px rgba(20, 40, 60, 0.04);
  --shadow-md: 0 6px 24px rgba(20, 40, 60, 0.08);
  --shadow-lg: 0 16px 48px rgba(20, 40, 60, 0.10);
  --container: 1120px;
  --transition: all .18s ease;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  padding: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-hover); }
img { max-width: 100%; display: block; }

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

/* ── Nav ──────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(245, 245, 245, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.logo-mark { font-size: 1.3rem; }
.logo-text { color: var(--text); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
}

.nav-link:hover { color: var(--text); }

/* ── Button ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-sm { padding: 9px 16px; font-size: 0.9rem; }
.btn-lg { padding: 16px 30px; font-size: 1.05rem; border-radius: 12px; }
.btn-block { width: 100%; }

.btn-primary {
  background: var(--primary);
  color: #ffffff !important;
  box-shadow: 0 4px 14px rgba(64, 167, 227, 0.32);
}

.btn-primary:hover {
  background: var(--primary-hover);
  color: #ffffff !important;
  transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(64, 167, 227, 0.4);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text) !important;
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary) !important;
}

.btn-ghost {
  background: transparent;
  color: var(--text) !important;
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--bg-card);
  border-color: var(--primary);
  color: var(--primary) !important;
}

.btn-arrow { font-size: 1.1em; transition: transform .18s ease; }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* ── Hero ────────────────────────────────────────────────── */
.hero {
  background:
    radial-gradient(circle at 80% 10%, rgba(64, 167, 227, 0.14) 0%, transparent 55%),
    radial-gradient(circle at 0% 90%, rgba(64, 167, 227, 0.08) 0%, transparent 50%),
    var(--bg);
  padding: 64px 0 88px;
  overflow: hidden;
}

.hero-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 56px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  background: var(--primary-soft);
  color: var(--accent-dark);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 22px;
  letter-spacing: 0.01em;
}

.hero h1 {
  margin: 0 0 20px;
  font-size: clamp(2rem, 3.8vw, 2.9rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.025em;
  color: var(--text);
}

.hero h1 .accent { color: var(--primary); }

.hero-lead {
  margin: 0 0 30px;
  font-size: 1.18rem;
  color: var(--text-secondary);
  line-height: 1.55;
  max-width: 540px;
}

.hero-lead strong { color: var(--text); font-weight: 700; }

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.hero-note {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-hint);
  font-size: 0.92rem;
}

.hero-note-icon { font-size: 1rem; }

.hero-image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transform: rotate(0.5deg);
  transition: transform .3s ease;
}

.hero-image-wrap:hover { transform: rotate(0deg) scale(1.01); }
.hero-image-wrap img { width: 100%; height: auto; display: block; }

/* ── IO (На входе / На выходе) ───────────────────────────── */
.io {
  padding: 72px 0;
  background: var(--bg-card);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.io-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: stretch;
  max-width: 900px;
  margin: 0 auto;
}

.io-card {
  background: var(--bg);
  padding: 32px 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.io-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.io-emoji {
  font-size: 2rem;
  margin-bottom: 10px;
}

.io-title {
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.io-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.io-list li {
  padding-left: 22px;
  position: relative;
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.io-list li::before {
  content: "•";
  position: absolute;
  left: 6px;
  color: var(--primary);
  font-weight: 700;
}

.io-list strong { color: var(--text); font-weight: 600; }

.io-arrow {
  align-self: center;
  font-size: 2rem;
  color: var(--primary);
  font-weight: 300;
}

/* ── Flow (📲 Как это работает) ──────────────────────────── */
.flow {
  padding: 72px 0;
}

.flow-inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 32px;
  align-items: center;
  max-width: 860px;
  margin: 0 auto;
  background: var(--bg-card);
  padding: 40px 40px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

.flow-icon {
  font-size: 3.5rem;
  line-height: 1;
}

.flow-text h2 {
  margin: 0 0 10px;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}

.flow-text p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
}

.flow-text strong { color: var(--text); font-weight: 600; }

/* ── Section head ────────────────────────────────────────── */
.section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-head h2 {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 2.6vw, 2.05rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
}

.section-sub {
  margin: 0 auto;
  font-size: 1.02rem;
  color: var(--text-secondary);
  max-width: 600px;
}

/* ── Under hood ──────────────────────────────────────────── */
.under-hood {
  padding: 88px 0;
  background: var(--bg-card);
}

.hood-list {
  list-style: none;
  padding: 0;
  margin: 0 auto;
  max-width: 760px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.hood-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: center;
  background: var(--bg);
  padding: 18px 22px;
  border-radius: var(--radius);
  border: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.hood-list li:hover {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.hood-icon {
  font-size: 1.6rem;
  line-height: 1;
}

.hood-text {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.5;
}

.hood-text strong { color: var(--text); font-weight: 600; }

/* ── Soon (🔜 чипсы) ─────────────────────────────────────── */
.soon {
  padding: 88px 0;
}

.soon-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  max-width: 780px;
  margin: 0 auto;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 12px 20px;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text);
  transition: var(--transition);
}

.chip:hover {
  border-color: var(--primary);
  background: var(--primary-soft);
  color: var(--accent-dark);
}

.chip-sub {
  color: var(--text-hint);
  font-weight: 400;
  font-size: 0.88rem;
}

/* ── Safety (🔒) ─────────────────────────────────────────── */
.safety {
  padding: 0 0 88px;
}

.safety-card {
  max-width: 720px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 22px;
  align-items: center;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-subtle);
  padding: 24px 28px;
  box-shadow: var(--shadow-sm);
}

.safety-emoji { font-size: 2.4rem; line-height: 1; }

.safety-title {
  font-weight: 800;
  font-size: 1.15rem;
  margin-bottom: 4px;
  color: var(--text);
}

.safety-desc {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.5;
}

/* ── Author / personal pitch ─────────────────────────────── */
.author {
  padding: 0 0 88px;
}

.author-card {
  max-width: 760px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 28px;
  align-items: flex-start;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--primary);
  padding: 32px 36px;
  box-shadow: var(--shadow-sm);
}

.author-emoji {
  font-size: 2.2rem;
  line-height: 1;
  padding-top: 4px;
}

.author-title {
  font-weight: 800;
  font-size: 1.2rem;
  margin-bottom: 8px;
  color: var(--text);
  letter-spacing: -0.01em;
}

.author-body {
  margin: 0 0 10px;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
}

.author-body strong { color: var(--text); font-weight: 600; }

.author-signature {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-hint);
  font-style: italic;
}

.author-signature a {
  color: var(--primary);
  font-style: normal;
}

@media (max-width: 560px) {
  .author { padding: 0 0 56px; }
  .author-card { grid-template-columns: 1fr; gap: 14px; padding: 24px 22px; }
  .author-emoji { font-size: 1.8rem; padding-top: 0; }
}

/* ── Pricing ─────────────────────────────────────────────── */
.pricing {
  padding: 88px 0;
  background: var(--bg-card);
}

.tariff-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.tariff {
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: var(--transition);
  position: relative;
}

.tariff:hover {
  border-color: var(--primary);
  background: var(--bg-card);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.tariff-highlight {
  background: linear-gradient(180deg, rgba(64, 167, 227, 0.10), var(--bg-card) 80%);
  border-color: var(--primary);
  box-shadow: 0 8px 32px rgba(64, 167, 227, 0.14);
}

.tariff-head {
  display: flex;
  align-items: center;
  gap: 10px;
}

.tariff-emoji { font-size: 1.4rem; line-height: 1; }

.tariff-name {
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--text);
}

.tariff-price {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.price-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}

.price-unit {
  font-size: 0.82rem;
  color: var(--text-hint);
}

.tariff-features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex-grow: 1;
}

.tariff-features li {
  position: relative;
  padding-left: 22px;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.tariff-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--primary);
  font-weight: 700;
}

.pricing-note {
  text-align: center;
  margin: 40px 0 0;
  color: var(--text-secondary);
  font-size: 0.96rem;
  line-height: 1.7;
}

/* ── Final CTA ───────────────────────────────────────────── */
.cta-final {
  padding: 88px 0;
  background:
    radial-gradient(circle at 50% 0%, rgba(64, 167, 227, 0.12) 0%, transparent 60%),
    var(--bg);
}

.cta-final-inner {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 56px 32px;
  text-align: center;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-md);
  max-width: 720px;
  margin: 0 auto;
}

.cta-final h2 {
  margin: 0 0 12px;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}

.cta-final p {
  margin: 0 0 28px;
  font-size: 1.05rem;
  color: var(--text-secondary);
}

.cta-final-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-final-sub {
  margin: 24px 0 0 !important;
  font-size: 0.92rem !important;
  color: var(--text-hint) !important;
}

/* ── Footer ──────────────────────────────────────────────── */
.footer {
  padding: 36px 0;
  background: var(--bg-card);
  border-top: 1px solid var(--border-subtle);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.footer-links a:hover { color: var(--primary); }

.footer-copy {
  color: var(--text-hint);
  font-size: 0.9rem;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .hero-image { order: -1; max-width: 480px; margin: 0 auto; }
  .io-grid { grid-template-columns: 1fr; }
  .io-arrow { transform: rotate(90deg); justify-self: center; }
  .flow-inner { grid-template-columns: 1fr; gap: 16px; text-align: center; padding: 32px 24px; }
  .flow-icon { font-size: 3rem; }
  .tariff-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-link:not(.btn) { display: none; }
}

@media (max-width: 560px) {
  .hero { padding: 40px 0 56px; }
  .io, .flow, .under-hood, .soon, .pricing, .cta-final { padding: 56px 0; }
  .safety { padding: 0 0 56px; }
  .hero h1 { font-size: 1.85rem; }
  .hero-lead { font-size: 1.05rem; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { width: 100%; }
  .tariff-grid { grid-template-columns: 1fr; }
  .cta-final-inner { padding: 40px 24px; }
  .safety-card { grid-template-columns: 1fr; text-align: center; gap: 12px; padding: 24px 20px; }
  .hood-list li { grid-template-columns: 1fr; gap: 8px; text-align: center; }
  .footer-inner { flex-direction: column; text-align: center; gap: 16px; }
  .nav-inner { padding: 12px 18px; }
}