@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500&display=swap');

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

:root {
  --bg-primary: #060a13;
  --bg-secondary: #0c1220;
  --bg-card: #111827;
  --bg-card-border: #1e293b;
  --accent-red: #dc2626;
  --accent-red-glow: rgba(220, 38, 38, 0.3);
  --accent-cyan: #22d3ee;
  --accent-cyan-dim: #0e7490;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --max-width: 1200px;
  --nav-height: 72px;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

/* ==================== NAV ==================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  background: rgba(6, 10, 19, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(30, 41, 59, 0.5);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.nav__inner {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav__logo-img {
  width: 120px;
  height: 40px;
  object-fit: contain;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__link {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.nav__link--active {
  color: var(--text-primary);
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-red);
  color: #fff;
  padding: 10px 20px;
  border-radius: 6px;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav__hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav__hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__hamburger.active span:nth-child(2) {
  opacity: 0;
}

.nav__hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ==================== MOBILE NAV ==================== */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  width: 100%;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--bg-card-border);
  z-index: 999;
  padding: 16px 24px 24px;
  flex-direction: column;
  gap: 8px;
}

.mobile-nav.active {
  display: flex;
}

.mobile-nav__link {
  display: block;
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 500;
  padding: 12px 0;
  border-bottom: 1px solid rgba(30, 41, 59, 0.3);
}

.mobile-nav__link--active {
  color: var(--text-primary);
}

.mobile-nav__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--accent-red);
  color: #fff;
  padding: 14px 24px;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 8px;
}

/* ==================== HERO ==================== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-height) + 40px) 24px 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(220, 38, 38, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero__badge {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid var(--bg-card-border);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 24px;
}

.hero__title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.hero__title span {
  display: block;
  color: var(--accent-red);
}

.hero__subtitle {
  font-size: clamp(0.75rem, 2vw, 0.875rem);
  font-weight: 600;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 20px;
}

.hero__desc {
  max-width: 560px;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: 36px;
}

.hero__buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 6px;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border: none;
  cursor: pointer;
  font-family: var(--font-main);
}

.btn--primary {
  background: var(--accent-red);
  color: #fff;
}

.btn--secondary {
  background: rgba(30, 41, 59, 0.6);
  color: var(--text-primary);
  border: 1px solid var(--bg-card-border);
}

/* ==================== STATS ==================== */
.stats {
  padding: 40px 24px;
  border-top: 1px solid rgba(30, 41, 59, 0.3);
  border-bottom: 1px solid rgba(30, 41, 59, 0.3);
  background: rgba(12, 18, 32, 0.5);
}

.stats__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  text-align: center;
}

.stat__value {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.stat__value--red { color: var(--accent-red); }
.stat__value--cyan { color: var(--accent-cyan); }

.stat__label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 4px;
}

/* ==================== SECTIONS ==================== */
.section {
  padding: 80px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section--full {
  max-width: 100%;
  padding-left: 0;
  padding-right: 0;
}

.section--full > .section__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section--bg {
  background: var(--bg-secondary);
}

.section__label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-red);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}

.section__title {
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.section__desc {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: 40px;
}

/* ==================== FEATURES GRID ==================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: 12px;
  padding: 32px 28px;
}

.feature-card__icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 20px;
}

.feature-card__icon--yellow { background: rgba(234, 179, 8, 0.15); color: #eab308; }
.feature-card__icon--cyan { background: rgba(34, 211, 238, 0.15); color: #22d3ee; }
.feature-card__icon--red { background: rgba(220, 38, 38, 0.15); color: #dc2626; }
.feature-card__icon--green { background: rgba(34, 197, 94, 0.15); color: #22c55e; }
.feature-card__icon--purple { background: rgba(168, 85, 247, 0.15); color: #a855f7; }
.feature-card__icon--blue { background: rgba(59, 130, 246, 0.15); color: #3b82f6; }

.feature-card__title {
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: 10px;
}

.feature-card__desc {
  color: var(--text-secondary);
  font-size: 0.8125rem;
  line-height: 1.7;
}

/* ==================== SPLIT SECTION ==================== */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.split__content {
  display: flex;
  flex-direction: column;
}

.split__list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}

.split__list-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.split__list-item::before {
  content: '▸';
  color: var(--accent-red);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ==================== CODE BLOCK ==================== */
.code-block {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: 12px;
  overflow: hidden;
}

.code-block__header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 20px;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--bg-card-border);
}

.code-block__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.code-block__dot--red { background: #ef4444; }
.code-block__dot--yellow { background: #eab308; }
.code-block__dot--green { background: #22c55e; }

.code-block__title {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: 8px;
  font-family: var(--font-mono);
}

.code-block__body {
  padding: 24px 20px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 2;
  color: var(--text-secondary);
  overflow-x: auto;
}

.code-block__body .kw { color: var(--accent-red); }
.code-block__body .fn { color: #22d3ee; }
.code-block__body .str { color: #22c55e; }
.code-block__body .num { color: #eab308; }
.code-block__body .cm { color: var(--text-muted); }
.code-block__body .var { color: #c084fc; }

/* ==================== CONTENT SECTION (Article) ==================== */
.content-section {
  padding: 60px 24px;
  max-width: 860px;
  margin: 0 auto;
}

.content-section h2 {
  font-size: 1.5rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  margin-top: 48px;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.content-section h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-top: 32px;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.content-section p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.content-section ul {
  margin-bottom: 20px;
  padding-left: 0;
}

.content-section ul li {
  position: relative;
  padding-left: 20px;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.8;
  margin-bottom: 6px;
}

.content-section ul li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent-red);
  font-weight: 700;
}

.content-section a {
  color: var(--accent-cyan);
}

/* ==================== CTA SECTION ==================== */
.cta-section {
  text-align: center;
  padding: 100px 24px;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(220, 38, 38, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section .section__label {
  position: relative;
}

.cta-section .section__title {
  position: relative;
  font-size: clamp(2rem, 6vw, 3.5rem);
}

.cta-section .section__title span {
  color: var(--accent-red);
}

.cta-section .section__desc {
  position: relative;
  margin-left: auto;
  margin-right: auto;
}

.cta-section .btn {
  position: relative;
}

/* ==================== FOOTER ==================== */
.footer {
  border-top: 1px solid rgba(30, 41, 59, 0.3);
  padding: 40px 24px;
  background: var(--bg-primary);
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer__brand {
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.footer__links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.footer__link {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 500;
}

.footer__copy {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==================== STEPS ==================== */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}

.step {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: 12px;
  padding: 28px 24px;
  position: relative;
}

.step__number {
  font-size: 2.5rem;
  font-weight: 900;
  color: rgba(220, 38, 38, 0.15);
  line-height: 1;
  margin-bottom: 12px;
}

.step__title {
  font-size: 0.9375rem;
  font-weight: 700;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.step__desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==================== CONTACT FORM ==================== */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.9375rem;
  font-family: var(--font-main);
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent-cyan-dim);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

/* ==================== PAGE HEADER ==================== */
.page-header {
  padding: calc(var(--nav-height) + 60px) 24px 40px;
  text-align: center;
  position: relative;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(circle, rgba(220, 38, 38, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.page-header .section__title {
  position: relative;
}

.page-header .section__label {
  position: relative;
}

.page-header .section__desc {
  position: relative;
  margin-left: auto;
  margin-right: auto;
}

/* ==================== INTERNAL LINK BOX ==================== */
.internal-links {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: 12px;
  padding: 28px;
  margin-top: 48px;
}

.internal-links__title {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.internal-links__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.internal-links__item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-cyan);
  font-size: 0.875rem;
  font-weight: 500;
}

.internal-links__item::before {
  content: '→';
  color: var(--accent-red);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .split {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav__links {
    display: none;
  }

  .nav__hamburger {
    display: none;
  }

  .mobile-nav {
    display: none !important;
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--nav-height) + 60px);
    padding-bottom: 50px;
  }

  .hero__title {
    font-size: clamp(2.5rem, 12vw, 4rem);
  }

  .stats__inner {
    grid-template-columns: repeat(3, 1fr);
  }

  .stats__inner .stat:nth-child(4),
  .stats__inner .stat:nth-child(5) {
    grid-column: span 1;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 60px 20px;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }

  .footer__links {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .stats__inner {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero__buttons {
    flex-direction: column;
    width: 100%;
  }

  .hero__buttons .btn {
    justify-content: center;
  }

  .content-section {
    padding: 40px 16px;
  }
}