:root {
  --bg: #0f1220;
  --bg-soft: #171b2f;
  --card: #1d2238;
  --card-2: #222844;
  --text: #edf1ff;
  --muted: #b6bfdc;
  --line: rgba(255,255,255,0.1);
  --accent: #ff9e64;
  --accent-2: #ffd0af;
  --success: #9ce2b2;
  --max: 1180px;
  --radius: 22px;
  --shadow: 0 20px 50px rgba(0,0,0,0.25);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255,158,100,0.12), transparent 28%),
    radial-gradient(circle at top right, rgba(112,171,255,0.12), transparent 30%),
    var(--bg);
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.narrow { width: min(760px, calc(100% - 32px)); }
.section { padding: 80px 0; }
.section-tight { padding: 56px 0; }
.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card-soft { padding: 30px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 20px;
  border-radius: 999px;
  font-weight: 700;
  background: var(--accent);
  color: #191919;
  border: 1px solid transparent;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
}
.button:hover { transform: translateY(-2px); box-shadow: 0 16px 30px rgba(255,158,100,.25); }
.button-outline { background: transparent; color: var(--text); border-color: var(--line); }
.button-outline:hover { border-color: var(--accent); color: var(--accent); box-shadow: none; }
.button-small { padding: 10px 16px; font-size: 14px; }
.button-full { width: 100%; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.lead { font-size: clamp(18px, 2vw, 21px); color: var(--muted); margin-top: 16px; }
.site-header {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(15,18,32,.75);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 76px; gap: 20px; }
.logo { font-size: 1.4rem; font-weight: 800; letter-spacing: -0.03em; }
.logo span { color: var(--accent); }
.site-nav { display: flex; align-items: center; gap: 20px; }
.site-nav a { color: var(--muted); font-weight: 600; }
.site-nav a.active, .site-nav a:hover { color: var(--text); }
.menu-toggle { display: none; background: transparent; border: 0; padding: 0; }
.menu-toggle span { display: block; width: 24px; height: 2px; margin: 5px 0; background: var(--text); border-radius: 999px; }
.hero {
  padding: 94px 0 70px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 28px;
  align-items: stretch;
}
.hero-copy h1,
.page-hero h1 { font-size: clamp(2.7rem, 6vw, 4.6rem); line-height: 1.02; letter-spacing: -0.05em; margin: 14px 0 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.proof-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 16px;
  margin-top: 34px;
}
.proof-list .mini-card { padding: 18px; background: rgba(255,255,255,.03); border: 1px solid var(--line); border-radius: 18px; }
.proof-list h3 { margin: 0 0 8px; font-size: 16px; }
.proof-list p { margin: 0; color: var(--muted); font-size: 14px; }
.hero-panel {
  padding: 28px;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.metric-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin-top: 22px; }
.metric { padding: 16px; background: rgba(255,255,255,.03); border: 1px solid var(--line); border-radius: 18px; }
.metric strong { display: block; font-size: 1.7rem; margin-bottom: 6px; }
.metric span { color: var(--muted); font-size: 14px; }
.section-heading { display: flex; justify-content: space-between; gap: 18px; align-items: end; margin-bottom: 26px; }
.section-heading h2 { font-size: clamp(2rem, 4vw, 3rem); line-height: 1.05; margin: 8px 0 0; letter-spacing: -0.04em; }
.section-heading p { margin: 0; max-width: 620px; color: var(--muted); }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 22px; }
.prompt-card, .post-card { overflow: hidden; }
.prompt-card-body, .post-card-body { padding: 22px; }
.thumb {
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, rgba(255,158,100,.22), rgba(112,171,255,.18));
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: end;
  padding: 18px;
}
.thumb span { display: inline-flex; background: rgba(15,18,32,.8); border: 1px solid var(--line); padding: 8px 12px; border-radius: 999px; font-size: 13px; font-weight: 700; }
.prompt-card h3, .post-card h3 { margin: 0 0 10px; font-size: 1.25rem; line-height: 1.2; }
.prompt-card p, .post-card p { color: var(--muted); margin: 0 0 18px; }
.card-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--muted); font-size: 14px; }
.price { color: var(--accent); font-weight: 800; font-size: 1.1rem; }
.badge-row, .pill-row { display: flex; flex-wrap: wrap; gap: 10px; }
.badge, .pill {
  display: inline-flex; align-items: center;
  padding: 8px 12px; border-radius: 999px;
  background: rgba(255,255,255,.04); border: 1px solid var(--line);
  color: var(--muted); font-size: 13px; font-weight: 700;
}
.split-panel {
  display: grid; grid-template-columns: 1fr .9fr; gap: 24px; align-items: center;
  padding: 28px;
}
.check-list { list-style: none; padding: 0; margin: 18px 0 0; }
.check-list li { position: relative; padding-left: 28px; margin: 10px 0; color: var(--muted); }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--success); font-weight: 800; }
.page-hero { padding: 86px 0 34px; }
.page-hero-compact { padding-bottom: 22px; }
.page-meta { color: var(--muted); font-weight: 600; }
.list-grid { display: grid; gap: 20px; }
.article-shell { display: grid; grid-template-columns: minmax(0,1fr) 290px; gap: 26px; }
.article-content { font-size: 18px; }
.article-content h2, .article-content h3 { line-height: 1.15; letter-spacing: -0.03em; }
.article-content h2 { margin: 34px 0 14px; font-size: 1.9rem; }
.article-content h3 { margin: 28px 0 12px; font-size: 1.35rem; }
.article-content p, .article-content li { color: #dbe3ff; }
.article-content strong { color: var(--accent-2); }
.article-content blockquote {
  margin: 22px 0;
  padding: 18px 20px;
  border-left: 4px solid var(--accent);
  background: rgba(255,255,255,.03);
  border-radius: 0 18px 18px 0;
  color: var(--muted);
}
.article-content code {
  background: rgba(255,255,255,.08);
  padding: 2px 8px;
  border-radius: 8px;
  font-size: .95em;
}
.article-sidebar, .prompt-sidebar { padding: 22px; height: max-content; }
.sticky-card { position: sticky; top: 96px; }
.price-tag { font-size: 2.2rem; font-weight: 800; color: var(--accent); margin-bottom: 16px; }
.prompt-layout { display: grid; grid-template-columns: minmax(0,1fr) 320px; gap: 26px; }
.filter-bar { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 24px; }
.filter-chip {
  padding: 10px 14px; border-radius: 999px; background: transparent; border: 1px solid var(--line); color: var(--muted); cursor: pointer; font-weight: 700;
}
.filter-chip.active, .filter-chip:hover { color: var(--text); border-color: var(--accent); }
.cta-banner {
  padding: 30px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: center;
}
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 20px; }
.faq-item h3 { margin: 0 0 8px; font-size: 1.05rem; }
.faq-item p { margin: 0; color: var(--muted); }
.site-footer { border-top: 1px solid var(--line); padding: 30px 0 20px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr .8fr .8fr; gap: 24px; }
.footer-brand { font-size: 1.25rem; font-weight: 800; margin-bottom: 8px; }
.site-footer p, .site-footer li, .site-footer a { color: var(--muted); }
.site-footer h3 { margin: 0 0 10px; font-size: 1rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer-bottom { padding-top: 14px; margin-top: 18px; border-top: 1px solid var(--line); }
.hide { display: none !important; }
.notice {
  padding: 16px 18px; border: 1px dashed rgba(255,255,255,.16); border-radius: 18px; color: var(--muted);
}
@media (max-width: 980px) {
  .hero-grid, .grid-3, .grid-2, .split-panel, .prompt-layout, .article-shell, .footer-grid { grid-template-columns: 1fr; }
  .proof-list { grid-template-columns: 1fr; }
  .sticky-card { position: static; }
}
@media (max-width: 760px) {
  .site-nav {
    position: absolute; left: 16px; right: 16px; top: 76px;
    flex-direction: column; align-items: stretch; padding: 16px;
    background: rgba(23,27,47,.98); border: 1px solid var(--line); border-radius: 20px;
    display: none;
  }
  .site-nav.open { display: flex; }
  .menu-toggle { display: inline-block; }
  .metric-row { grid-template-columns: 1fr; }
  .cta-banner { grid-template-columns: 1fr; }
  .hero { padding-top: 72px; }
  .section { padding: 64px 0; }
}


html[lang="en"] .lang-vi { display: none !important; }
html[lang="vi"] .lang-en { display: none !important; }
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.lang-switcher {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
}
.lang-switch {
  border: 0;
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  padding: 8px 12px;
  font-weight: 800;
  cursor: pointer;
}
.lang-switch.active {
  background: var(--accent);
  color: #191919;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.logo img,
.footer-brand-logo img {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  box-shadow: 0 12px 24px rgba(255,158,100,.18);
}
.logo-text { display: inline-flex; gap: 0; }
.footer-brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
@media (max-width: 760px) {
  .header-actions { margin-left: auto; }
  .lang-switcher { order: -1; }
  .logo img, .footer-brand-logo img { width: 34px; height: 34px; border-radius: 12px; }
}
.prompt-detail-image {
  margin-bottom: 20px;
  border-radius: 18px;
  overflow: hidden;
}

.prompt-detail-image img {
  display: block;
  width: 100%;
  height: auto;
}