*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --brand: #18CB96;
  --brand-dark: #0fa87c;
  --brand-light: #e6faf4;
  --brand-border: #b3f0da;
  --text: #373643;
  --text-muted: #6b7280;
  --text-hint: #9ca3af;
  --bg: #ffffff;
  --bg-alt: #f8fffe;
  --bg-dark: #0d2d24;
  --border: #f0f0f0;
  --border-mid: #e5e7eb;
}
html { scroll-behavior: smooth; }
body { font-family: 'DM Sans', system-ui, sans-serif; color: var(--text); background: var(--bg); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: inherit; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 40px; }
.section { padding: 80px 0; }
.section-alt { padding: 80px 0; background: var(--bg-alt); }
.section-dark { padding: 80px 0; background: var(--bg-dark); }

.btn-primary { display: inline-flex; align-items: center; gap: 8px; background: var(--brand); color: #fff; border: none; padding: 13px 28px; border-radius: 8px; font-size: 15px; font-weight: 500; cursor: pointer; font-family: inherit; transition: background 0.2s; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-outline { display: inline-flex; align-items: center; gap: 8px; background: transparent; color: var(--brand); border: 1.5px solid var(--brand); padding: 12px 28px; border-radius: 8px; font-size: 15px; font-weight: 500; cursor: pointer; font-family: inherit; transition: all 0.2s; }
.btn-outline:hover { background: var(--brand-light); }
.btn-ghost { display: inline-flex; align-items: center; gap: 6px; background: transparent; color: var(--text-muted); border: 1px solid var(--border-mid); padding: 12px 20px; border-radius: 8px; font-size: 14px; cursor: pointer; font-family: inherit; transition: all 0.2s; }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }

.label-tag { display: inline-flex; align-items: center; gap: 6px; background: var(--brand-light); color: #0a7a5a; font-size: 12px; font-weight: 500; padding: 5px 14px; border-radius: 20px; margin-bottom: 16px; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { font-size: 32px; font-weight: 500; color: var(--text); margin-bottom: 12px; }
.section-header p { font-size: 16px; color: var(--text-muted); max-width: 520px; margin: 0 auto; line-height: 1.7; }

nav { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.95); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 16px 40px; max-width: 1100px; margin: 0 auto; }
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo-icon { width: 34px; height: 34px; background: var(--brand); border-radius: 9px; display: flex; align-items: center; justify-content: center; }
.nav-logo-icon svg { width: 18px; height: 18px; fill: #fff; }
.nav-logo-text { font-size: 18px; font-weight: 500; color: var(--text); }
.nav-logo-text span { color: var(--brand); }
.nav-logo-by { font-size: 11px; color: var(--text-hint); margin-top: 1px; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { font-size: 14px; color: var(--text-muted); transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a.active { font-weight: 500; }
.nav-cta { display: flex; align-items: center; gap: 12px; }

.feat-list { list-style: none; }
.feat-list li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-muted); padding: 6px 0; border-bottom: 1px solid var(--border); }
.feat-list li:last-child { border-bottom: none; }
.feat-list li svg { width: 15px; height: 15px; fill: var(--brand); flex-shrink: 0; }

footer { padding: 40px; border-top: 1px solid var(--border); }
.footer-inner { max-width: 1100px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px; }
.footer-logo { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.footer-logo-icon { width: 28px; height: 28px; background: var(--brand); border-radius: 7px; display: flex; align-items: center; justify-content: center; }
.footer-logo-icon svg { width: 14px; height: 14px; fill: #fff; }
.footer-logo-text { font-size: 15px; font-weight: 500; color: var(--text); }
.footer-logo-text span { color: var(--brand); }
.footer-by { font-size: 12px; color: var(--text-hint); }
.footer-links { display: flex; gap: 28px; flex-wrap: wrap; }
.footer-links a { font-size: 13px; color: var(--text-hint); transition: color 0.2s; }
.footer-links a:hover { color: var(--text); }
.footer-copy { font-size: 12px; color: var(--text-hint); }

.page-hero { padding: 60px 0 40px; text-align: center; border-bottom: 1px solid var(--border); background: var(--bg-alt); }
.page-hero h1 { font-size: 40px; font-weight: 500; color: var(--text); margin-bottom: 14px; }
.page-hero p { font-size: 17px; color: var(--text-muted); max-width: 560px; margin: 0 auto; line-height: 1.7; }

.faq-item { border-bottom: 1px solid var(--border); padding: 24px 0; cursor: pointer; }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-q { display: flex; align-items: center; justify-content: space-between; font-size: 16px; font-weight: 500; color: var(--text); gap: 16px; }
.faq-q svg { width: 18px; height: 18px; fill: var(--text-hint); flex-shrink: 0; transition: transform 0.2s; }
.faq-item.open .faq-q svg { transform: rotate(180deg); }
.faq-a { font-size: 15px; color: var(--text-muted); line-height: 1.7; margin-top: 12px; display: none; }
.faq-item.open .faq-a { display: block; }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .container { padding: 0 20px; }
  .nav-inner { padding: 16px 20px; }
  .page-hero h1 { font-size: 28px; }
}