:root{--bg:#02120a;--surface:#062418;--surface2:#0a3525;--border:#114a32;--gem:#10b981;--gem-dark:#047857;--gem-light:#34d399;--gem-glow:rgba(16,185,129,.14);--gold:#fbbf24;--text:#e6fff5;--muted:#5a8870;--radius:14px}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;line-height:1.6}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:1140px;margin:0 auto;padding:0 24px}
nav{position:sticky;top:0;z-index:100;background:rgba(2,18,10,.88);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-size:1.2rem;font-weight:700}
.logo em{color:var(--gem);font-style:normal}
.logo-icon{width:34px;height:34px;background:linear-gradient(135deg,var(--gem),var(--gem-dark));border:1px solid var(--gold);transform:rotate(45deg);display:flex;align-items:center;justify-content:center;font-size:1rem;color:#fff}
.logo-icon span{transform:rotate(-45deg)}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{padding:6px 14px;border-radius:8px;font-size:0.9rem;color:var(--muted);transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--text);background:var(--surface)}
.btn{padding:9px 22px;border-radius:10px;font-size:0.9rem;font-weight:600;cursor:pointer;border:none;transition:.2s;display:inline-flex;align-items:center;gap:6px}
.btn-primary{background:var(--gem-dark);color:#fff;border:1px solid var(--gold)}
.btn-primary:hover{background:var(--gem);color:#000}
.btn-outline{background:transparent;color:var(--gem);border:1px solid var(--gem-dark)}
.btn-outline:hover{background:var(--gem-glow)}
.nav-cta{padding:7px 18px;font-size:0.85rem}
.menu-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.menu-toggle span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:.3s}
/* Hero - emerald gem facets */
.hero{padding:72px 0 60px;text-align:center;position:relative}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--gem-glow);border:1px solid var(--gem-dark);border-radius:6px;padding:6px 14px;font-size:0.78rem;color:var(--gem-light);margin-bottom:22px;letter-spacing:.05em}
.hero h1{font-size:3rem;font-weight:800;line-height:1.15;margin-bottom:18px;max-width:760px;margin-left:auto;margin-right:auto;letter-spacing:-.01em}
.hero h1 em{color:var(--gem-light);font-style:normal}
.hero-sub{color:var(--muted);font-size:1.05rem;line-height:1.7;margin-bottom:30px;max-width:580px;margin-left:auto;margin-right:auto}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-bottom:48px}
/* Gem grid - diamond facet cards */
.gem-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:920px;margin:0 auto}
.gem-card{background:linear-gradient(180deg,var(--surface),var(--surface2));border:1px solid var(--gem-dark);padding:22px 16px;position:relative;clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);min-height:160px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;transition:.3s}
.gem-card:hover{transform:translateY(-4px);box-shadow:0 0 24px rgba(16,185,129,.2)}
.gem-icon{font-size:1.8rem;margin-bottom:6px}
.gem-num{font-size:1.6rem;font-weight:800;color:var(--gem-light);line-height:1}
.gem-lbl{font-size:0.78rem;color:var(--muted);margin-top:6px}
.section{padding:80px 0}
.section-head{text-align:center;margin-bottom:48px}
.section-head h2{font-size:2.1rem;font-weight:800;margin-bottom:10px;letter-spacing:-.01em}
.section-head p{color:var(--muted);max-width:540px;margin:0 auto}
.label{display:inline-block;background:var(--gem-glow);color:var(--gem-light);border:1px solid var(--gem-dark);border-radius:6px;padding:4px 12px;font-size:0.78rem;font-weight:600;margin-bottom:12px}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:28px;transition:.2s;position:relative}
.feat-card::before{content:"";position:absolute;top:0;left:0;width:40px;height:2px;background:var(--gold)}
.feat-card:hover{border-color:var(--gem-dark);transform:translateY(-2px)}
.feat-icon{width:46px;height:46px;border-radius:10px;background:var(--gem-glow);border:1px solid var(--gem-dark);display:flex;align-items:center;justify-content:center;font-size:1.3rem;margin-bottom:16px}
.feat-card h4{font-size:1rem;margin-bottom:8px;font-weight:700}
.feat-card p{color:var(--muted);font-size:0.88rem;line-height:1.7}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.price-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:32px 28px;position:relative}
.price-card.hot{border-color:var(--gold);background:linear-gradient(180deg,var(--surface),rgba(251,191,36,.04))}
.price-hot-tag{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--gold);color:#000;font-size:0.75rem;font-weight:700;padding:4px 14px;border-radius:6px;white-space:nowrap}
.price-name{font-size:1rem;font-weight:700;margin-bottom:6px}
.price-amount{font-size:2.6rem;font-weight:800;color:var(--gem-light);margin:10px 0 4px}
.price-amount span{font-size:1rem;font-weight:400;color:var(--muted)}
.price-period{font-size:0.82rem;color:var(--muted);margin-bottom:18px}
.price-list{display:flex;flex-direction:column;gap:10px;margin-bottom:22px}
.price-list li{font-size:0.88rem;color:var(--muted);padding-left:20px;position:relative}
.price-list li::before{content:"◆";position:absolute;left:0;color:var(--gold);font-size:0.7rem;top:6px}
.faq-list{max-width:720px;margin:0 auto;display:flex;flex-direction:column;gap:10px}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:12px;overflow:hidden}
.faq-q{width:100%;padding:18px 22px;display:flex;justify-content:space-between;align-items:center;background:none;border:none;color:var(--text);font-size:0.95rem;font-weight:500;cursor:pointer;text-align:left}
.faq-q::after{content:"+";font-size:1.3rem;color:var(--muted);transition:.2s;flex-shrink:0}
.faq-item.open .faq-q::after{transform:rotate(45deg);color:var(--gem-light)}
.faq-a{max-height:0;overflow:hidden;transition:.3s}
.faq-item.open .faq-a{max-height:300px}
.faq-a p{padding:0 22px 18px;color:var(--muted);font-size:0.9rem;line-height:1.7}
footer{background:var(--surface);border-top:1px solid var(--border);padding:52px 0 28px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand p{color:var(--muted);font-size:0.85rem;line-height:1.6;max-width:260px;margin-top:12px}
.footer-col h4{font-size:0.85rem;text-transform:uppercase;letter-spacing:.05em;color:var(--gold);margin-bottom:14px;font-weight:700}
.footer-col li{margin-bottom:8px}
.footer-col a{color:var(--muted);font-size:0.88rem;transition:.2s}
.footer-col a:hover{color:var(--text)}
.footer-bottom{border-top:1px solid var(--border);padding-top:20px;text-align:center}
.footer-bottom p{color:var(--muted);font-size:0.82rem}
.page-hero{padding:52px 0 40px;background:var(--surface);border-bottom:1px solid var(--border)}
.page-hero h1{font-size:2.1rem;font-weight:800;margin-bottom:8px}
.page-hero p{color:var(--muted)}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:0.82rem;color:var(--muted);margin-bottom:12px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--text)}
.breadcrumb span{color:var(--border)}
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:48px}
.dl-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:30px;text-align:center}
.dl-icon{font-size:2.5rem;margin-bottom:14px}
.dl-card h3{font-size:1.08rem;margin-bottom:6px;font-weight:700}
.dl-card p{color:var(--muted);font-size:0.85rem;margin-bottom:20px}
.dl-mobile{display:grid;grid-template-columns:1fr 1fr;gap:18px;max-width:620px;margin:0 auto}
.sub-box{background:var(--surface);border:1px solid var(--gem-dark);border-radius:16px;padding:26px;margin-top:48px}
.sub-code{background:var(--surface2);border:1px solid var(--border);border-radius:8px;padding:14px 18px;font-family:monospace;font-size:0.88rem;color:var(--gem-light);word-break:break-all;margin-bottom:16px}
.sub-steps{counter-reset:step;display:flex;flex-direction:column;gap:10px}
.sub-steps li{font-size:0.9rem;color:var(--muted);padding-left:20px;position:relative}
.sub-steps li::before{content:counter(step);counter-increment:step;position:absolute;left:0;color:var(--gem-light);font-weight:700;font-size:0.78rem}
.tut-content{max-width:820px}
.tut-sec{margin-bottom:48px}
.tut-sec h2{font-size:1.5rem;font-weight:800;margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid var(--border)}
.tut-sec h2::before{content:"◆ ";color:var(--gold);font-size:0.8em}
.tut-sec h3{font-size:1rem;font-weight:700;margin:18px 0 10px}
.tut-sec p{color:var(--muted);line-height:1.8;margin-bottom:10px}
.tut-sec ol,.tut-sec ul{color:var(--muted);padding-left:20px;line-height:2;margin-bottom:10px}
.tip-box{background:var(--gem-glow);border:1px solid var(--gem-dark);border-radius:10px;padding:14px 16px;font-size:0.88rem;line-height:1.7;margin-top:14px}
@media(max-width:900px){
  .gem-grid{grid-template-columns:1fr 1fr;gap:18px}
  .feat-grid{grid-template-columns:1fr 1fr}
  .price-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .dl-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
  .hero h1{font-size:2.2rem}
  .gem-grid{grid-template-columns:1fr 1fr}
  .feat-grid{grid-template-columns:1fr}
  .dl-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:var(--surface);border-bottom:1px solid var(--border);flex-direction:column;padding:16px;gap:4px}
  .nav-links.open{display:flex}
  .menu-toggle{display:flex}
}