:root {
  --bg: #ffffff;
  --bg-dark: #0f1115;
  --bg-soft: #f3f4f6;

  --text: #0f1115;
  --muted: #6b7280;

  --accent: #6366f1;
  --accent-soft: #e0e7ff;

  --radius: 20px;
  --shadow: 0 20px 40px rgba(0,0,0,.08);
}

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

body {
  font-family: "Inter", sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* LAYOUT */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* HEADER */
.header {
  position: sticky;
  top: 0;
  background: #fff;
  border-bottom: 1px solid #e5e7eb;
  z-index: 100;
}

.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 800;
  font-size: 1.4rem;
}

.nav a {
  margin: 0 14px;
  text-decoration: none;
  color: var(--muted);
}

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

.icon-btn {
  background: none;
  border: none;
  font-size: 1.1rem;
  cursor: pointer;
}

/* HERO */
.hero {
  padding: 120px 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-text h1 {
  font-size: 3.6rem;
  line-height: 1.1;
}

.hero-text span {
  color: var(--accent);
}

.hero-text p {
  margin: 24px 0 36px;
  color: var(--muted);
}

.hero-visual {
  position: relative;
  height: 360px;
}

.visual-card {
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #e5e7eb, #c7d2fe);
}

.visual-card.accent {
  transform: rotate(6deg);
  opacity: .6;
}

/* BUTTONS */
.btn {
  padding: 14px 32px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  border: none;
  cursor: pointer;
}

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

.btn-outline {
  border: 2px solid var(--accent);
  color: var(--accent);
  background: transparent;
}

.btn-small {
  margin-top: 14px;
  padding: 10px 18px;
  font-size: .85rem;
}

/* SECTIONS */
.section {
  padding: 110px 0;
}

.section-dark {
  background: var(--bg-dark);
  color: #fff;
}

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

.section-title {
  font-size: 2.4rem;
  margin-bottom: 60px;
}

.section-title.light {
  color: #fff;
}

/* FEATURES */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 30px;
}

.feature {
  background: var(--bg-soft);
  padding: 36px;
  border-radius: var(--radius);
}

/* PRODUCTS */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(220px,1fr));
  gap: 30px;
}

.product-card {
  background: #1a1c22;
  padding: 28px;
  border-radius: var(--radius);
}

.product-card.featured {
  outline: 2px solid var(--accent);
}

.product-img {
  height: 180px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #2a2d3a, #11131a);
  margin-bottom: 16px;
}

.product-card h4 {
  color: #fff;
}

.product-card .desc {
  color: #9ca3af;
  font-size: .9rem;
}

.price {
  display: block;
  margin-top: 8px;
  color: #a5b4fc;
  font-weight: 600;
}

/* BENEFITS */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 30px;
}

.benefit {
  background: var(--bg-soft);
  padding: 40px;
  border-radius: var(--radius);
}

/* TESTIMONIALS */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 30px;
}

.testimonial {
  background: #fff;
  padding: 36px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* CONTACT */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-form {
  background: #fff;
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 14px;
  margin-bottom: 16px;
  border-radius: 12px;
  border: 1px solid #d1d5db;
}

/* FOOTER */
.footer {
  padding: 40px;
  text-align: center;
  background: var(--bg-soft);
  color: var(--muted);
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

  .hero-text h1 {
    font-size: 2.6rem;
  }
}