:root {
  --bg-dark: #121212;
  --bg-card: #1e1e1e;
  --text-main: #f5f5f5;
  --text-sub: #b3b3b3;
  --green-accent: #a3e635;
  --green-dark: #4d7c0f;
  --border-color: #333;
  --radius: 12px;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
}
a {
  text-decoration: none;
  color: inherit;
}
img {
  max-width: 100%;
  display: block;
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  background-color: rgba(18, 18, 18, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--green-accent);
}
.brand img {
  height: 32px;
  width: auto;
  border-radius: 6px;
}
.nav-links {
  display: none;
  gap: 20px;
  font-size: 0.9rem;
  color: var(--text-sub);
}
.nav-links a:hover {
  color: var(--green-accent);
}

/* Hero */
.hero {
  padding: 60px 0 40px;
  background: radial-gradient(circle at top right, #1a2e05 0%, var(--bg-dark) 60%);
  text-align: center;
}
.hero h1 {
  font-size: 2rem;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--text-main);
}
.hero h1 span {
  color: var(--green-accent);
}
.hero p {
  color: var(--text-sub);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto 30px;
}
.hero-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 320px;
  margin: 0 auto;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  border-radius: var(--radius);
  font-weight: bold;
  font-size: 1rem;
  transition: transform 0.2s, background 0.2s;
}
.btn:active {
  transform: scale(0.98);
}
.btn-primary {
  background-color: var(--green-accent);
  color: #000;
}
.btn-primary:hover {
  background-color: #bef264;
}
.btn-secondary {
  background-color: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}
.btn-secondary:hover {
  background-color: #2a2a2a;
}
.hero-marquee {
  margin-top: 40px;
  overflow: hidden;
  white-space: nowrap;
  position: relative;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}
.marquee-track {
  display: inline-flex;
  gap: 16px;
  animation: scroll 20s linear infinite;
}
.marquee-track img {
  height: 180px;
  border-radius: 8px;
  object-fit: cover;
  aspect-ratio: 3/4;
}
@keyframes scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* Sections */
section {
  padding: 60px 0;
}
.section-bg {
  background-color: var(--bg-card);
}
.section-title {
  font-size: 1.5rem;
  margin-bottom: 10px;
  color: var(--green-accent);
  display: flex;
  align-items: center;
  gap: 8px;
}
.section-title::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 20px;
  background: var(--green-accent);
  border-radius: 2px;
}
.section-desc {
  color: var(--text-sub);
  margin-bottom: 30px;
  font-size: 0.9rem;
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.card {
  background-color: var(--bg-dark);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
}
.card img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  transition: transform 0.3s;
}
.card:hover img {
  transform: scale(1.05);
}
.card-info {
  padding: 12px;
}
.card-title {
  font-weight: bold;
  font-size: 0.95rem;
  margin-bottom: 4px;
}
.card-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.tag {
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: #333;
  color: #ccc;
}
.card-date {
  font-size: 0.75rem;
  color: var(--text-sub);
}

/* Split Layout */
.split {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.split-img {
  width: 100%;
  border-radius: var(--radius);
}
.split-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.list-item {
  display: flex;
  gap: 12px;
  padding: 12px;
  background: var(--bg-dark);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}
.list-num {
  color: var(--green-accent);
  font-weight: bold;
  font-size: 1.1rem;
}
.list-text {
  font-size: 0.9rem;
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 20px;
  border-left: 2px solid var(--green-dark);
  margin: 20px 0;
}
.timeline-item {
  position: relative;
  margin-bottom: 20px;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 4px;
  width: 12px;
  height: 12px;
  background: var(--green-accent);
  border-radius: 50%;
  border: 2px solid var(--bg-card);
}
.timeline-time {
  font-weight: bold;
  color: var(--green-accent);
  font-size: 0.9rem;
  margin-bottom: 4px;
}
.timeline-title {
  font-size: 0.95rem;
  font-weight: bold;
}
.timeline-desc {
  font-size: 0.85rem;
  color: var(--text-sub);
}

/* Reviews */
.reviews {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.review-item {
  display: flex;
  gap: 12px;
  padding: 16px;
  background: var(--bg-dark);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
}
.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}
.review-body {
  flex: 1;
}
.review-name {
  font-size: 0.85rem;
  color: var(--green-accent);
  margin-bottom: 4px;
}
.review-text {
  font-size: 0.85rem;
  color: var(--text-main);
}

/* FAQ / Q&A */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 16px;
}
.faq-q {
  font-weight: bold;
  font-size: 0.95rem;
  margin-bottom: 8px;
  color: var(--green-accent);
}
.faq-a {
  font-size: 0.85rem;
  color: var(--text-sub);
}

/* Download Area */
.download-area {
  text-align: center;
  background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-dark) 100%);
  border-top: 1px solid var(--border-color);
}
.steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: left;
  margin: 30px auto;
  max-width: 500px;
}
.step-item {
  background: rgba(255,255,255,0.05);
  padding: 16px;
  border-radius: 8px;
}
.step-title {
  font-weight: bold;
  color: var(--green-accent);
  margin-bottom: 4px;
}
.step-desc {
  font-size: 0.85rem;
  color: var(--text-sub);
}

/* Footer */
.site-footer {
  padding: 30px 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 0.75rem;
  color: #666;
}
.footer-inner p {
  margin-bottom: 8px;
}
.footer-inner a {
  color: #888;
}
.footer-inner a:hover {
  text-decoration: underline;
}

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.8);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.active {
  display: flex;
}
.modal-box {
  background: var(--bg-card);
  padding: 24px;
  border-radius: var(--radius);
  width: 100%;
  max-width: 400px;
  text-align: center;
  border: 1px solid var(--border-color);
}
.modal-title {
  font-size: 1.1rem;
  font-weight: bold;
  margin-bottom: 12px;
  color: #f87171;
}
.modal-desc {
  font-size: 0.9rem;
  color: var(--text-sub);
  margin-bottom: 16px;
}
.copy-box {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}
.copy-input {
  flex: 1;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--bg-dark);
  color: var(--text-main);
  font-size: 0.85rem;
  outline: none;
}
.btn-copy {
  padding: 10px 16px;
  background: var(--green-accent);
  color: #000;
  font-weight: bold;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}
.btn-close {
  background: transparent;
  color: var(--text-sub);
  border: none;
  font-size: 0.9rem;
  cursor: pointer;
}

/* Media Queries */
@media (min-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  .hero-actions {
    flex-direction: row;
    max-width: none;
    justify-content: center;
  }
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  .split {
    flex-direction: row;
    align-items: flex-start;
  }
  .split-img-wrap {
    width: 40%;
    flex-shrink: 0;
  }
  .split-content {
    width: 60%;
  }
  .nav-links {
    display: flex;
  }
  .reviews {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .hero {
    padding: 100px 0 60px;
  }
  .hero h1 {
    font-size: 3rem;
  }
  .grid-3 {
    grid-template-columns: repeat(4, 1fr);
  }
  .marquee-track img {
    height: 240px;
  }
  .reviews {
    grid-template-columns: repeat(3, 1fr);
  }
  section {
    padding: 80px 0;
  }
}