@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

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

:root {
  --primary: #f58220;
  --primary-light: #ffe8d3;
  --primary-mid: #f59e42;
  --dark: #0b1120;
  --gray-900: #1a1f2e;
  --gray-700: #3d4356;
  --gray-500: #6b7280;
  --gray-300: #d1d5db;
  --gray-100: #f3f4f6;
  --gray-50: #f9fafb;
  --white: #ffffff;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow-card:
    0 1px 3px rgba(11, 17, 32, 0.04), 0 4px 12px rgba(11, 17, 32, 0.03);
  --shadow-hover:
    0 2px 8px rgba(11, 17, 32, 0.06), 0 8px 24px rgba(11, 17, 32, 0.06);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html,
body {
  overflow-x: hidden;
  max-width: 100vw;
}

body {
  font-family: 'Plus Jakarta Sans', 'Outfit', sans-serif;
  background: var(--gray-50);
  color: var(--gray-900);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 28px;
}

.back-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(249, 250, 251, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}
.back-nav .container {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 60px;
}
.back-link {
  display: flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 6px 12px 6px 8px;
  border-radius: 8px;
  transition: var(--transition);
}
.back-link:hover {
  background: var(--primary-light);
}
.back-link svg {
  width: 18px;
  height: 18px;
}
.back-nav-title {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--dark);
}

.page-hero {
  padding: 100px 0 40px;
  text-align: center;
  position: relative;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -40px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 500px;
  background: radial-gradient(
    ellipse,
    rgba(245, 130, 32, 0.06) 0%,
    transparent 70%
  );
  pointer-events: none;
}
.hero-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-mid));
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeUp 0.5s ease both;
}
.hero-icon svg {
  width: 28px;
  height: 28px;
  color: var(--white);
}
.page-hero h1 {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 10px;
  animation: fadeUp 0.5s ease 0.08s both;
}
.page-hero p {
  font-size: 1rem;
  color: var(--gray-500);
  max-width: 520px;
  margin: 0 auto;
  animation: fadeUp 0.5s ease 0.16s both;
}

.tab-pills {
  display: flex;
  gap: 4px;
  justify-content: center;
  padding: 6px;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--gray-100);
  margin-bottom: 48px;
  animation: fadeUp 0.5s ease 0.22s both;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.tab-pill {
  flex: 1;
  padding: 10px 16px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--gray-500);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  white-space: nowrap;
}
.tab-pill:hover {
  color: var(--gray-900);
  background: var(--gray-50);
}
.tab-pill.active {
  color: var(--primary);
  background: var(--primary-light);
  font-weight: 600;
}
.tab-pill svg {
  width: 16px;
  height: 16px;
}

.tab-panel {
  display: none;
  animation: fadeIn 0.4s ease;
}
.tab-panel.active {
  display: block;
}

.showcase-section {
  padding: 0 0 60px;
}
.showcase-layout {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 48px;
  align-items: start;
}
.showcase-phone {
  position: sticky;
  top: 80px;
}
.phone-frame {
  position: relative;
  width: 270px;
  background: var(--dark);
  border-radius: 40px;
  padding: 12px;
  box-shadow:
    0 0 0 2px rgba(255, 255, 255, 0.1),
    0 20px 60px rgba(11, 17, 32, 0.18),
    0 8px 24px rgba(11, 17, 32, 0.12);
}
.phone-frame::before {
  content: '';
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 90px;
  height: 24px;
  background: var(--dark);
  border-radius: 0 0 14px 14px;
  z-index: 3;
}
.phone-screen {
  width: 100%;
  border-radius: 30px;
  overflow: hidden;
  background: var(--gray-50);
}
.phone-screen img {
  width: 100%;
  display: block;
}

.showcase-features {
  padding-top: 8px;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}
.section-label .dot {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
}
.section-label span {
  font-family: 'Outfit', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.feature-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 22px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.feature-card:hover {
  border-color: rgba(245, 130, 32, 0.15);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary), var(--primary-mid));
  transform: scaleY(0);
  transition: transform 0.3s ease;
  transform-origin: bottom;
  border-radius: 0 2px 2px 0;
}
.feature-card:hover::before {
  transform: scaleY(1);
}
.feature-icon {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  background: var(--primary-light);
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.feature-card:hover .feature-icon {
  background: var(--primary);
}
.feature-icon svg {
  width: 20px;
  height: 20px;
  color: var(--primary);
  transition: var(--transition);
}
.feature-card:hover .feature-icon svg {
  color: var(--white);
}
.feature-info {
  flex: 1;
  min-width: 0;
}
.feature-info h3 {
  font-family: 'Outfit', sans-serif;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
}
.feature-info p {
  font-size: 0.82rem;
  color: var(--gray-500);
  line-height: 1.55;
}

.levels-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 16px;
}
.level-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  border: 1px solid var(--gray-100);
  transition: var(--transition);
}
.level-badge:hover {
  border-color: rgba(245, 130, 32, 0.2);
  background: var(--primary-light);
}
.level-rank {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--primary);
  min-width: 42px;
}
.level-name {
  font-size: 0.78rem;
  color: var(--gray-700);
  font-weight: 500;
}

.tip-box {
  background: var(--primary-light);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-top: 24px;
}
.tip-box svg {
  width: 20px;
  height: 20px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}
.tip-box-content h4 {
  font-family: 'Outfit', sans-serif;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 3px;
}
.tip-box-content p {
  font-size: 0.8rem;
  color: var(--gray-700);
  line-height: 1.55;
}

footer {
  border-top: 1px solid var(--gray-100);
  padding: 28px 0;
  text-align: center;
  background: var(--white);
}
footer a {
  font-size: 0.78rem;
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}
footer a:hover {
  text-decoration: underline;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.stagger-1 {
  animation: fadeUp 0.5s ease 0.05s both;
}
.stagger-2 {
  animation: fadeUp 0.5s ease 0.1s both;
}
.stagger-3 {
  animation: fadeUp 0.5s ease 0.15s both;
}
.stagger-4 {
  animation: fadeUp 0.5s ease 0.2s both;
}
.stagger-5 {
  animation: fadeUp 0.5s ease 0.25s both;
}

@media (max-width: 768px) {
  .page-hero {
    padding: 85px 0 30px;
  }
  .showcase-layout {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .showcase-phone {
    position: static;
    display: flex;
    justify-content: center;
  }
  .phone-frame {
    width: 240px;
    border-radius: 34px;
    padding: 10px;
  }
  .phone-frame::before {
    width: 76px;
    height: 20px;
    top: 10px;
  }
  .phone-screen {
    border-radius: 26px;
  }
  .levels-grid {
    grid-template-columns: 1fr 1fr;
  }
  .tab-pills {
    flex-wrap: wrap;
  }
  .tip-box {
    flex-direction: column;
    gap: 10px;
  }
}
@media (max-width: 480px) {
  .container {
    padding: 0 18px;
  }
  .phone-frame {
    width: 220px;
    border-radius: 30px;
  }
  .phone-screen {
    border-radius: 22px;
  }
  .levels-grid {
    grid-template-columns: 1fr;
  }
  .tab-pill {
    font-size: 0.76rem;
    padding: 9px 10px;
  }
}