:root {
  --black: #0e0e0e;
  --white: #fafaf8;
  --green: #00c896;
  --green-dark: #00a07a;
  --green-light: #e0fff6;
  --amber: #f5a623;
  --card-bg: #ffffff;
  --surface: #f4f4f0;
  --border: rgba(0,0,0,0.08);
  --text: #0e0e0e;
  --muted: #666;
  --radius: 16px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'DM Sans', sans-serif; background: var(--white); color: var(--text); font-size: 16px; line-height: 1.65; overflow-x: hidden; }

.lang-bar { position: fixed; top: 0; left: 0; right: 0; z-index: 100; display: flex; justify-content: flex-end; align-items: center; padding: 10px 24px; background: rgba(250,250,248,0.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); }
.lang-btn { font-family: 'DM Sans', sans-serif; font-size: 13px; font-weight: 500; padding: 5px 14px; border-radius: 50px; border: 1px solid var(--border); background: transparent; cursor: pointer; color: var(--muted); text-decoration: none; display: inline-block; transition: all 0.2s; letter-spacing: 0.02em; }
.lang-btn.active { background: var(--black); color: var(--white); border-color: var(--black); }
.lang-btn:hover:not(.active) { background: var(--surface); }

.hero { padding: 120px 24px 80px; max-width: 760px; margin: 0 auto; text-align: center; }
.badge { display: inline-flex; align-items: center; gap: 8px; background: var(--green-light); color: var(--green-dark); font-size: 13px; font-weight: 500; padding: 6px 16px; border-radius: 50px; margin-bottom: 28px; letter-spacing: 0.02em; }
.badge::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--green); flex-shrink: 0; animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
h1 { font-family: 'Syne', sans-serif; font-size: clamp(40px, 7vw, 72px); font-weight: 800; line-height: 1.05; letter-spacing: -0.03em; color: var(--black); margin-bottom: 20px; }
h1 span { color: var(--green); }
.hero-sub { font-size: 18px; color: var(--muted); max-width: 520px; margin: 0 auto 36px; font-weight: 300; line-height: 1.7; }
.cta-group { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.cta-main { display: inline-block; font-family: 'Syne', sans-serif; font-size: 17px; font-weight: 700; letter-spacing: -0.01em; background: var(--black); color: var(--white); padding: 16px 36px; border-radius: 50px; text-decoration: none; transition: all 0.2s; position: relative; overflow: hidden; }
.cta-main::after { content: ''; position: absolute; inset: 0; background: var(--green); opacity: 0; transition: opacity 0.3s; }
.cta-main:hover::after { opacity: 0.15; }
.cta-main:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }
.cta-sub { font-size: 13px; color: var(--muted); }

.code-box { margin: 0 auto 60px; max-width: 480px; background: var(--black); border-radius: var(--radius); padding: 24px 28px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.code-label { font-size: 12px; color: rgba(255,255,255,0.45); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 4px; }
.code-value { font-family: 'Syne', sans-serif; font-size: 28px; font-weight: 800; color: var(--green); letter-spacing: 0.1em; }
.copy-btn { font-family: 'DM Sans', sans-serif; font-size: 13px; font-weight: 500; padding: 10px 18px; border-radius: 50px; border: 1px solid rgba(255,255,255,0.2); background: rgba(255,255,255,0.07); color: rgba(255,255,255,0.85); cursor: pointer; transition: all 0.2s; white-space: nowrap; }
.copy-btn:hover { background: rgba(255,255,255,0.15); }
.copy-btn.copied { background: var(--green); border-color: var(--green); color: var(--black); }

.trust-bar { background: var(--surface); padding: 32px 24px; display: flex; justify-content: center; flex-wrap: wrap; gap: 32px; }
.trust-item { text-align: center; }
.trust-num { font-family: 'Syne', sans-serif; font-size: 26px; font-weight: 800; color: var(--black); letter-spacing: -0.02em; }
.trust-label { font-size: 12px; color: var(--muted); margin-top: 2px; }

.section { max-width: 800px; margin: 0 auto; padding: 60px 24px; }
.section-label { font-size: 12px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--green-dark); margin-bottom: 12px; }
h2 { font-family: 'Syne', sans-serif; font-size: clamp(26px, 4vw, 40px); font-weight: 800; letter-spacing: -0.025em; line-height: 1.1; margin-bottom: 8px; }
.section-desc { color: var(--muted); font-size: 17px; margin-bottom: 36px; font-weight: 300; }

.offers-section { max-width: 800px; margin: 0 auto; padding: 60px 24px; }
.offers-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.offer-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px 20px; display: flex; flex-direction: column; gap: 10px; transition: transform 0.2s, box-shadow 0.2s; }
.offer-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.07); }
.offer-card.hot { border-color: var(--amber); border-width: 2px; }
.offer-card.ref { border-color: var(--green); border-width: 2px; }
.offer-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.offer-pill { font-size: 10px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; padding: 3px 9px; border-radius: 50px; white-space: nowrap; flex-shrink: 0; }
.pill-hot { background: #fff4e0; color: #b86800; }
.pill-ref { background: var(--green-light); color: var(--green-dark); }
.pill-stack { background: #f0eeff; color: #4a3db5; }
.offer-icon { font-size: 22px; line-height: 1; }
.offer-title { font-family: 'Syne', sans-serif; font-size: 16px; font-weight: 700; color: var(--black); line-height: 1.25; }
.offer-bonus { font-family: 'Syne', sans-serif; font-size: 28px; font-weight: 800; color: var(--black); letter-spacing: -0.02em; line-height: 1; }
.offer-card.hot .offer-bonus { color: #b86800; }
.offer-card.ref .offer-bonus { color: var(--green-dark); }
.offer-desc { font-size: 13px; color: var(--muted); line-height: 1.55; }
.offer-expiry { font-size: 11px; color: var(--muted); margin-top: auto; padding-top: 8px; border-top: 1px solid var(--border); }
.offer-expiry strong { color: #c0392b; }
.updated-note { font-size: 11px; color: var(--muted); text-align: right; margin-top: 12px; font-style: italic; }
.stack-note { background: #f0eeff; border-radius: 10px; padding: 14px 18px; font-size: 13px; color: #4a3db5; margin-top: 16px; display: flex; gap: 10px; align-items: flex-start; }
.stack-note-icon { font-size: 16px; flex-shrink: 0; margin-top: 1px; }

.tiers { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin-bottom: 20px; }
.tier { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 16px; text-align: center; transition: transform 0.2s, box-shadow 0.2s; }
.tier:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.07); }
.tier.featured { border-color: var(--green); border-width: 2px; background: var(--green-light); }
.tier-amount { font-size: 11px; color: var(--muted); margin-bottom: 8px; }
.tier-bonus { font-family: 'Syne', sans-serif; font-size: 26px; font-weight: 800; color: var(--black); margin-bottom: 4px; }
.tier.featured .tier-bonus { color: var(--green-dark); }
.tier-tag { font-size: 11px; color: var(--muted); }
.tier-note { font-size: 12px; color: var(--muted); text-align: center; margin-top: 8px; }

.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; }
.step { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 22px; }
.step-num { font-family: 'Syne', sans-serif; font-size: 40px; font-weight: 800; color: var(--surface); line-height: 1; margin-bottom: 16px; letter-spacing: -0.04em; }
.step-title { font-family: 'Syne', sans-serif; font-size: 17px; font-weight: 700; margin-bottom: 8px; color: var(--black); }
.step-body { font-size: 14px; color: var(--muted); line-height: 1.6; }
.step-tag { display: inline-block; margin-top: 12px; font-size: 11px; font-weight: 600; background: var(--green-light); color: var(--green-dark); padding: 3px 10px; border-radius: 50px; }

.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.faq-q { width: 100%; text-align: left; font-family: 'DM Sans', sans-serif; font-size: 15px; font-weight: 500; color: var(--black); padding: 18px 22px; background: none; border: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq-q::after { content: '+'; font-size: 20px; font-weight: 300; color: var(--muted); flex-shrink: 0; transition: transform 0.25s; }
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a { font-size: 14px; color: var(--muted); line-height: 1.7; max-height: 0; overflow: hidden; transition: max-height 0.3s ease, padding 0.2s; padding: 0 22px; }
.faq-item.open .faq-a { max-height: 300px; padding: 0 22px 20px; }

.final-cta { max-width: 600px; margin: 0 auto; padding: 80px 24px; text-align: center; }
.final-cta h2 { margin-bottom: 14px; }
.final-cta p { color: var(--muted); margin-bottom: 36px; font-size: 16px; font-weight: 300; }

footer { border-top: 1px solid var(--border); padding: 24px; text-align: center; font-size: 12px; color: var(--muted); line-height: 1.7; max-width: 700px; margin: 0 auto; }
.divider { border: none; border-top: 1px solid var(--border); max-width: 800px; margin: 0 auto; }

@media (max-width: 520px) {
  .code-box { flex-direction: column; text-align: center; }
  .tiers { grid-template-columns: repeat(2, 1fr); }
}