/* ===========================
   RESET & BASE
   =========================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #ffffff;
  color: #111111;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===========================
   CONTAINER
   =========================== */
.container {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===========================
   NAV
   =========================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: #ffffff;
  border-bottom: 1px solid #e8e8e8;
  transition: box-shadow 0.2s ease;
}

.nav.scrolled {
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
}

.nav-logo {
  font-size: 15px;
  font-weight: 600;
  color: #111111;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-logo:hover {
  color: #333333;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  font-size: 14px;
  font-weight: 400;
  color: #444444;
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 6px;
  transition: background 0.15s ease, color 0.15s ease;
}

.nav-link:hover {
  background: #f4f4f4;
  color: #111111;
}

.nav-login {
  font-weight: 500;
  color: #111111;
  border: 1px solid #d0d0d0;
}

.nav-login:hover {
  background: #111111;
  color: #ffffff;
  border-color: #111111;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  transition: background 0.15s;
}

.hamburger:hover {
  background: #f4f4f4;
}

.hamburger span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: #111111;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.hamburger.open span:first-child {
  transform: translateY(6.5px) rotate(45deg);
}

.hamburger.open span:last-child {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
  display: none;
  flex-direction: column;
  border-top: 1px solid #e8e8e8;
  padding: 8px 24px 16px;
}

.mobile-menu.open {
  display: flex;
}

.mobile-link {
  font-size: 15px;
  font-weight: 400;
  color: #444444;
  text-decoration: none;
  padding: 10px 0;
  border-bottom: 1px solid #f0f0f0;
  transition: color 0.15s;
}

.mobile-link:last-child {
  border-bottom: none;
}

.mobile-link:hover {
  color: #111111;
}

/* ===========================
   SECTION DIVIDER
   =========================== */
.section-divider {
  width: 100%;
  height: 1px;
  background: #e8e8e8;
}

/* ===========================
   HERO
   =========================== */
.hero {
  padding-top: 124px;
  padding-bottom: 96px;
}

.hero-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  color: #888888;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 28px;
  padding: 4px 10px;
  border: 1px solid #e0e0e0;
  border-radius: 4px;
}

.hero-headline {
  font-size: clamp(32px, 6vw, 52px);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: #111111;
  margin-bottom: 24px;
  max-width: 720px;
}

.hero-sub {
  font-size: 17px;
  color: #444444;
  line-height: 1.65;
  max-width: 620px;
  margin-bottom: 16px;
}

.hero-supporting {
  font-size: 14px;
  color: #888888;
  line-height: 1.6;
  max-width: 520px;
  margin-bottom: 40px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===========================
   BUTTONS
   =========================== */
.btn {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  padding: 10px 20px;
  border-radius: 6px;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  cursor: pointer;
}

.btn-primary {
  background: #111111;
  color: #ffffff;
  border: 1px solid #111111;
}

.btn-primary:hover {
  background: #333333;
  border-color: #333333;
}

.btn-secondary {
  background: transparent;
  color: #111111;
  border: 1px solid #d0d0d0;
}

.btn-secondary:hover {
  background: #f4f4f4;
  border-color: #b0b0b0;
}

/* ===========================
   SECTIONS — GENERAL
   =========================== */
.section {
  padding: 72px 0;
}

.section-dark {
  background: #111111;
}

.section-heading {
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
  color: #111111;
  margin-bottom: 24px;
}

.section-heading-center {
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
  color: #111111;
  margin-bottom: 40px;
  text-align: center;
}

.section-heading-light {
  color: #ffffff;
}

.section-text {
  font-size: 15px;
  color: #555555;
  line-height: 1.75;
  margin-bottom: 16px;
}

.section-text:last-child {
  margin-bottom: 0;
}

.section-text-light {
  color: #aaaaaa;
}

/* ===========================
   TWO-COL LAYOUT
   =========================== */
.two-col {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 48px;
  align-items: start;
}

.col-label {
  padding-top: 6px;
}

.label-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #888888;
  padding: 4px 8px;
  border: 1px solid #e0e0e0;
  border-radius: 4px;
}

.label-tag-light {
  color: #888888;
  border-color: #333333;
}

/* ===========================
   USER PATHS
   =========================== */
.paths-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  overflow: hidden;
}

.path-card {
  padding: 40px 36px;
  background: #ffffff;
}

.path-card:first-child {
  border-right: 1px solid #e8e8e8;
}

.path-tag {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #888888;
  margin-bottom: 16px;
}

.path-title {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #111111;
  margin-bottom: 16px;
  line-height: 1.25;
}

.path-text {
  font-size: 14px;
  color: #555555;
  line-height: 1.75;
  margin-bottom: 12px;
}

.path-text:last-of-type {
  margin-bottom: 20px;
}

.path-link {
  font-size: 13px;
  font-weight: 500;
  color: #111111;
  text-decoration: none;
  border-bottom: 1px solid #d0d0d0;
  padding-bottom: 2px;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.path-link:hover {
  border-color: #111111;
  color: #333333;
}

/* ===========================
   PLATFORM MODELS
   =========================== */
.models-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.model-card {
  padding: 32px;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  transition: border-color 0.2s ease;
}

.model-card:hover {
  border-color: #c0c0c0;
}

.model-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #888888;
  background: #f6f6f6;
  padding: 3px 8px;
  border-radius: 4px;
  margin-bottom: 14px;
}

.model-title {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: #111111;
  margin-bottom: 14px;
}

.model-text {
  font-size: 14px;
  color: #555555;
  line-height: 1.75;
  margin-bottom: 10px;
}

.model-text:last-child {
  margin-bottom: 0;
}

/* ===========================
   STEPS LIST
   =========================== */
.steps-list {
  list-style: none;
  margin-top: 36px;
  border-top: 1px solid #e8e8e8;
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid #e8e8e8;
}

.step-num {
  font-size: 12px;
  font-weight: 500;
  color: #bbbbbb;
  letter-spacing: 0.04em;
  min-width: 24px;
  padding-top: 2px;
}

.step-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.step-body strong {
  font-size: 14px;
  font-weight: 600;
  color: #111111;
}

.step-body span {
  font-size: 13px;
  color: #666666;
  line-height: 1.55;
}

/* ===========================
   TRUST BAR
   =========================== */
.trust-bar {
  padding: 36px 0;
  border-top: 1px solid #e8e8e8;
  border-bottom: 1px solid #e8e8e8;
  background: #fafafa;
}

.trust-text {
  font-size: 14px;
  color: #666666;
  line-height: 1.7;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

/* ===========================
   FOOTER
   =========================== */
.footer {
  padding: 56px 0 32px;
  background: #ffffff;
}

.footer-inner {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-logo {
  font-size: 15px;
  font-weight: 600;
  color: #111111;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.footer-tagline {
  font-size: 13px;
  color: #888888;
  line-height: 1.55;
  max-width: 180px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col-head {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #999999;
  margin-bottom: 4px;
}

.footer-link {
  font-size: 13px;
  color: #555555;
  text-decoration: none;
  transition: color 0.15s ease;
  line-height: 1.4;
}

.footer-link:hover {
  color: #111111;
}

.footer-bottom {
  border-top: 1px solid #e8e8e8;
  padding-top: 20px;
  font-size: 12px;
  color: #aaaaaa;
}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 700px) {
  .nav-links {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero {
    padding-top: 100px;
    padding-bottom: 64px;
  }

  .section {
    padding: 52px 0;
  }

  .two-col {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .col-label {
    padding-top: 0;
  }

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

  .path-card:first-child {
    border-right: none;
    border-bottom: 1px solid #e8e8e8;
  }

  .path-card {
    padding: 28px 24px;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-links {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn {
    width: 100%;
    text-align: center;
  }
}