:root{
    --sg-ink:#0e100e;
    --sg-black:#141614;
    --sg-green-100:#e6f5e0;
    --sg-green-300:#8fdc6a;
    --sg-green-400:#5fcf3d;
    --sg-green-500:#3ea830;
    --sg-green-600:#2c7d28;
    --sg-green-700:#1e5c22;
    --sg-paper:#eeeeeb;
    --sg-paper-2:#e3e3df;
    --sg-white:#fdfdfb;
    --sg-line: rgba(20,22,20,0.1);
    --sg-line-dark: rgba(255,255,255,0.12);

    --sg-font-display: 'Fraunces', serif;
    --sg-font-body: 'Inter', sans-serif;
    --sg-font-mono: 'JetBrains Mono', monospace;

    --sg-space-1: 4px;
    --sg-space-2: 8px;
    --sg-space-3: 12px;
    --sg-space-4: 16px;
    --sg-space-6: 24px;
    --sg-space-8: 32px;
    --sg-space-12: 48px;
    --sg-space-16: 64px;
    --sg-space-24: 96px;

    --sg-radius-sm: 8px;
    --sg-radius-md: 16px;
    --sg-radius-lg: 28px;
    --sg-container: 1180px;
  }

  *{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    font-family:var(--sg-font-body);
    background:var(--sg-paper);
    color:var(--sg-ink);
    line-height:1.5;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  ul{list-style:none;}
  .wrap{max-width:var(--sg-container);margin:0 auto;padding:0 var(--sg-space-6);}
  @media(min-width:900px){.wrap{padding:0 var(--sg-space-8);}}

  ::selection{background:var(--sg-green-400);color:var(--sg-ink);}
  :focus-visible{outline:2px solid var(--sg-green-500);outline-offset:3px;}

  h1,h2,h3,h4{font-family:var(--sg-font-display);font-weight:600;letter-spacing:-0.01em;color:var(--sg-ink);}

  .eyebrow{
    display:inline-flex;align-items:center;gap:var(--sg-space-2);
    font-family:var(--sg-font-mono);
    font-size:12px;letter-spacing:0.08em;text-transform:uppercase;
    color:var(--sg-green-700);
    background:var(--sg-green-100);
    border:1px solid rgba(30,92,34,0.18);
    padding:6px 14px;border-radius:999px;
  }
  .eyebrow::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--sg-green-500);flex:none;}

  /* ---------- Header ---------- */
  header{
    position:sticky;top:0;z-index:100;
    background:rgba(238,238,235,0.82);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border-bottom:1px solid var(--sg-line);
  }
  .nav{display:flex;align-items:center;justify-content:space-between;height:76px;gap:var(--sg-space-6);}
  .nav-logo img{height:26px;width:auto;}
  .nav-links{display:none;align-items:center;gap:var(--sg-space-8);font-size:14.5px;font-weight:500;color:var(--sg-ink);}
  .nav-links a{opacity:0.72;transition:opacity .2s ease;position:relative;}
  .nav-links a:hover{opacity:1;}
  @media(min-width:940px){.nav-links{display:flex;}}
  .nav-cta{display:flex;align-items:center;gap:var(--sg-space-4);}
  .nav-login{font-size:14.5px;font-weight:600;display:none;}
  @media(min-width:640px){.nav-login{display:inline;}}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-family:var(--sg-font-body);font-weight:600;font-size:14.5px;
    padding:12px 22px;border-radius:999px;border:1px solid transparent;
    cursor:pointer;transition:transform .18s ease, box-shadow .18s ease, background .18s ease;
    white-space:nowrap;
  }
  .btn-primary{background:var(--sg-ink);color:var(--sg-white);}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(20,22,20,0.28);}
  .btn-accent{background:var(--sg-green-400);color:var(--sg-ink);}
  .btn-accent:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(95,207,61,0.45);}
  .btn-ghost{background:transparent;border-color:var(--sg-line);color:var(--sg-ink);}
  .btn-ghost:hover{border-color:var(--sg-ink);}
  .btn-on-dark{background:var(--sg-green-400);color:var(--sg-ink);}
  .btn-outline-dark{background:transparent;border:1px solid var(--sg-line-dark);color:var(--sg-white);}
  .btn-outline-dark:hover{border-color:var(--sg-green-400);color:var(--sg-green-400);}
  .btn-sm{padding:9px 16px;font-size:13.5px;}

  /* ---------- Hero ---------- */
  .hero{position:relative;padding:var(--sg-space-16) 0 var(--sg-space-16);overflow:hidden;}
  .hero::before{
    content:'';position:absolute;inset:-20% -10% auto -10%;height:620px;
    background:radial-gradient(60% 60% at 30% 20%, rgba(95,207,61,0.22), transparent 70%);
    pointer-events:none;z-index:0;
  }
  .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:var(--sg-space-16);align-items:center;}
  @media(min-width:980px){.hero-grid{grid-template-columns:1.05fr 0.95fr;gap:var(--sg-space-12);}}

  .hero-copy h1{font-size:clamp(34px,5.4vw,58px);line-height:1.05;margin:var(--sg-space-6) 0 var(--sg-space-6);}
  .hero-copy h1 em{font-style:normal;color:var(--sg-green-600);}
  .hero-copy p{font-size:17px;color:rgba(14,16,14,0.68);max-width:520px;margin-bottom:var(--sg-space-8);}
  .hero-actions{display:flex;flex-wrap:wrap;gap:var(--sg-space-4);align-items:center;margin-bottom:var(--sg-space-8);}
  .hero-watch{display:flex;align-items:center;gap:10px;font-weight:600;font-size:14.5px;}
  .play-dot{width:38px;height:38px;border-radius:50%;background:var(--sg-ink);color:var(--sg-white);display:flex;align-items:center;justify-content:center;flex:none;}

  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
  .tag{
    font-family:var(--sg-font-mono);font-size:11.5px;letter-spacing:0.03em;
    border:1px solid var(--sg-line);border-radius:999px;padding:7px 13px;color:rgba(14,16,14,0.6);
  }

  /* ---------- Simulator card (signature element) ---------- */
  .sim-card{
    position:relative;background:var(--sg-ink);border-radius:var(--sg-radius-lg);
    padding:var(--sg-space-8) var(--sg-space-6) var(--sg-space-6);color:var(--sg-white);
    box-shadow:0 30px 70px rgba(14,16,14,0.35);
    isolation:isolate;overflow:hidden;
  }
  .sim-card::before{
    content:'';position:absolute;inset:0;
    background:radial-gradient(120% 100% at 100% 0%, rgba(95,207,61,0.28), transparent 55%);
    z-index:-1;
  }
  .sim-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--sg-space-6);}
  .sim-head .label{font-family:var(--sg-font-mono);font-size:11.5px;letter-spacing:0.08em;text-transform:uppercase;color:var(--sg-green-300);}
  .sim-seal{
    width:46px;height:46px;border-radius:50%;border:1.5px dashed rgba(255,255,255,0.35);
    display:flex;align-items:center;justify-content:center;flex:none;
    animation:sg-spin 18s linear infinite;
  }
  .sim-seal svg{width:22px;height:22px;}
  @keyframes sg-spin{to{transform:rotate(360deg);}}

  .sim-row{margin-bottom:var(--sg-space-6);}
  .sim-row label{display:block;font-size:12.5px;color:rgba(255,255,255,0.55);margin-bottom:8px;}
  .sim-slider-value{font-family:var(--sg-font-mono);font-size:26px;font-weight:600;color:var(--sg-white);}
  input[type="range"]{
    -webkit-appearance:none;width:100%;height:4px;border-radius:99px;
    background:rgba(255,255,255,0.18);margin-top:12px;
  }
  input[type="range"]::-webkit-slider-thumb{
    -webkit-appearance:none;width:18px;height:18px;border-radius:50%;
    background:var(--sg-green-400);cursor:pointer;border:3px solid var(--sg-ink);
    box-shadow:0 0 0 2px var(--sg-green-400);
  }
  input[type="range"]::-moz-range-thumb{
    width:18px;height:18px;border-radius:50%;background:var(--sg-green-400);
    cursor:pointer;border:3px solid var(--sg-ink);
  }

  .sim-result{
    background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.1);
    border-radius:var(--sg-radius-md);padding:var(--sg-space-6);
    display:flex;align-items:flex-end;justify-content:space-between;gap:var(--sg-space-4);
    margin-bottom:var(--sg-space-4);
  }
  .sim-result .rlabel{font-size:12.5px;color:rgba(255,255,255,0.55);margin-bottom:6px;}
  .sim-result .rvalue{font-family:var(--sg-font-mono);font-size:28px;color:var(--sg-green-300);font-weight:600;}
  .sim-result .rmeta{font-family:var(--sg-font-mono);font-size:12px;color:rgba(255,255,255,0.45);text-align:right;}

  .sim-stamp{
    position:absolute;bottom:18px;right:18px;
    font-family:var(--sg-font-mono);font-size:10px;letter-spacing:0.06em;color:rgba(255,255,255,0.28);
    border:1px solid rgba(255,255,255,0.18);border-radius:999px;padding:5px 10px;
    transform:rotate(-6deg);
  }

  /* ---------- Trust strip ---------- */
  .trust{padding:var(--sg-space-12) 0;border-top:1px solid var(--sg-line);border-bottom:1px solid var(--sg-line);}
  .trust-label{font-family:var(--sg-font-mono);font-size:11.5px;letter-spacing:0.08em;text-transform:uppercase;color:rgba(14,16,14,0.45);text-align:center;margin-bottom:var(--sg-space-8);}
  .trust-row{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--sg-space-8) var(--sg-space-6);}
  @media(min-width:760px){.trust-row{grid-template-columns:repeat(4,1fr);}}
  .trust-item{text-align:center;}
  .trust-item .num{font-family:var(--sg-font-display);font-size:clamp(28px,3.6vw,40px);font-weight:600;color:var(--sg-ink);}
  .trust-item .num span{color:var(--sg-green-600);}
  .trust-item .desc{font-size:13.5px;color:rgba(14,16,14,0.55);margin-top:4px;}

  /* ---------- Section heading pattern ---------- */
  .section{padding:var(--sg-space-24) 0;}
  .section-head{display:grid;grid-template-columns:1fr;gap:var(--sg-space-6);margin-bottom:var(--sg-space-12);}
  @media(min-width:860px){.section-head{grid-template-columns:1.3fr 0.9fr;align-items:end;}}
  .section-head h2{font-size:clamp(28px,3.6vw,42px);line-height:1.15;margin-top:var(--sg-space-4);}
  .section-head .accent{color:var(--sg-green-600);}
  .section-head .support{color:rgba(14,16,14,0.6);font-size:15px;}

  /* ---------- Features ---------- */
  .feat-grid{display:grid;grid-template-columns:1fr;gap:var(--sg-space-4);}
  @media(min-width:700px){.feat-grid{grid-template-columns:repeat(2,1fr);}}
  @media(min-width:1040px){.feat-grid{grid-template-columns:repeat(4,1fr);}}
  .feat-card{
    background:var(--sg-white);border:1px solid var(--sg-line);border-radius:var(--sg-radius-md);
    padding:var(--sg-space-6);min-height:230px;display:flex;flex-direction:column;justify-content:space-between;
    transition:transform .25s ease, box-shadow .25s ease;
  }
  .feat-card:hover{transform:translateY(-4px);box-shadow:0 20px 40px rgba(20,22,20,0.08);}
  .feat-icon{
    width:44px;height:44px;border-radius:12px;background:var(--sg-green-100);
    display:flex;align-items:center;justify-content:center;margin-bottom:var(--sg-space-6);
  }
  .feat-icon svg{width:22px;height:22px;color:var(--sg-green-700);}
  .feat-card h3{font-size:18px;font-weight:600;margin-bottom:8px;}
  .feat-card p{font-size:14px;color:rgba(14,16,14,0.6);}
  .feat-card.dark{background:var(--sg-ink);color:var(--sg-white);border-color:var(--sg-ink);}
  .feat-card.dark p{color:rgba(255,255,255,0.62);}
  .feat-card.dark .feat-icon{background:rgba(95,207,61,0.16);}
  .feat-card.dark .feat-icon svg{color:var(--sg-green-300);}

  /* ---------- How it works ---------- */
  .steps{position:relative;display:grid;grid-template-columns:1fr;gap:var(--sg-space-8);counter-reset:step;}
  @media(min-width:860px){.steps{grid-template-columns:repeat(3,1fr);}}
  .steps::before{
    content:'';position:absolute;top:26px;left:0;right:0;height:1px;background:var(--sg-line);
    display:none;
  }
  @media(min-width:860px){.steps::before{display:block;}}
  .step{position:relative;}
  .step-num{
    counter-increment:step;
    width:52px;height:52px;border-radius:50%;background:var(--sg-white);border:1px solid var(--sg-line);
    display:flex;align-items:center;justify-content:center;position:relative;z-index:1;
    font-family:var(--sg-font-mono);font-weight:600;font-size:15px;color:var(--sg-green-700);margin-bottom:var(--sg-space-6);
  }
  .step h3{font-size:19px;margin-bottom:10px;}
  .step p{font-size:14.5px;color:rgba(14,16,14,0.6);max-width:320px;}
  .step-protocol{font-family:var(--sg-font-mono);font-size:11px;color:rgba(14,16,14,0.35);margin-top:10px;letter-spacing:.04em;}

  /* ---------- Compliance / dark section ---------- */
  .compliance{
    background:var(--sg-ink);color:var(--sg-white);border-radius:var(--sg-radius-lg);
    padding:var(--sg-space-16) var(--sg-space-8);position:relative;overflow:hidden;
  }
  .compliance::after{
    content:'';position:absolute;right:-10%;top:-20%;width:520px;height:520px;border-radius:50%;
    background:radial-gradient(circle, rgba(95,207,61,0.18), transparent 65%);
  }
  .compliance-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:var(--sg-space-12);}
  @media(min-width:940px){.compliance-grid{grid-template-columns:1fr 1fr;}}
  .compliance h2{color:var(--sg-white);font-size:clamp(26px,3.4vw,38px);margin-bottom:var(--sg-space-4);}
  .compliance p.lead{color:rgba(255,255,255,0.65);font-size:15.5px;max-width:460px;margin-bottom:var(--sg-space-8);}
  .compliance-list{display:grid;gap:var(--sg-space-4);}
  .compliance-item{display:flex;gap:14px;align-items:flex-start;padding:var(--sg-space-4) 0;border-top:1px solid var(--sg-line-dark);}
  .compliance-item:first-child{border-top:none;}
  .compliance-item .ico{
    width:34px;height:34px;border-radius:9px;background:rgba(95,207,61,0.14);flex:none;
    display:flex;align-items:center;justify-content:center;
  }
  .compliance-item .ico svg{width:17px;height:17px;color:var(--sg-green-300);}
  .compliance-item h4{color:var(--sg-white);font-size:15.5px;font-family:var(--sg-font-body);font-weight:600;margin-bottom:3px;}
  .compliance-item p{color:rgba(255,255,255,0.55);font-size:13.5px;}

  .seal-wrap{position:relative;display:flex;align-items:center;justify-content:center;min-height:280px;}
  .seal{
    width:220px;height:220px;border-radius:50%;border:1.5px dashed rgba(255,255,255,0.35);
    display:flex;align-items:center;justify-content:center;position:relative;
  }
  .seal-inner{
    width:172px;height:172px;border-radius:50%;border:1px solid rgba(95,207,61,0.5);
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
    background:radial-gradient(circle, rgba(95,207,61,0.08), transparent 70%);
  }
  .seal-inner .s1{font-family:var(--sg-font-mono);font-size:10px;letter-spacing:0.14em;color:var(--sg-green-300);text-transform:uppercase;}
  .seal-inner .s2{font-family:var(--sg-font-display);font-size:26px;color:var(--sg-white);}
  .seal-inner .s3{font-family:var(--sg-font-mono);font-size:9.5px;color:rgba(255,255,255,0.4);}
  .seal-ring-text{position:absolute;inset:0;animation:sg-spin 30s linear infinite;}

  /* ---------- Testimonial-ish quote strip (kept minimal) ---------- */
  .quote-strip{display:grid;grid-template-columns:1fr;gap:var(--sg-space-6);}
  @media(min-width:860px){.quote-strip{grid-template-columns:repeat(3,1fr);}}
  .quote-card{background:var(--sg-white);border:1px solid var(--sg-line);border-radius:var(--sg-radius-md);padding:var(--sg-space-6);}
  .quote-card p{font-size:14.5px;color:rgba(14,16,14,0.72);margin-bottom:var(--sg-space-4);}
  .quote-who{display:flex;align-items:center;gap:10px;}
  .quote-avatar{width:36px;height:36px;border-radius:50%;background:var(--sg-green-100);color:var(--sg-green-700);display:flex;align-items:center;justify-content:center;font-family:var(--sg-font-mono);font-weight:600;font-size:13px;flex:none;}
  .quote-name{font-size:13.5px;font-weight:600;}
  .quote-role{font-size:12px;color:rgba(14,16,14,0.5);}

  /* ---------- Final CTA ---------- */
  .final-cta{
    background:linear-gradient(135deg, var(--sg-green-400), var(--sg-green-600));
    border-radius:var(--sg-radius-lg);padding:var(--sg-space-16) var(--sg-space-8);
    display:grid;grid-template-columns:1fr;gap:var(--sg-space-8);align-items:center;position:relative;overflow:hidden;
  }
  @media(min-width:860px){.final-cta{grid-template-columns:1.3fr 0.7fr;}}
  .final-cta::before{
    content:'';position:absolute;inset:0;
    background:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="120" height="120"><text x="0" y="90" font-size="90" fill="rgba(255,255,255,0.05)" font-family="Georgia">G</text></svg>');
    background-size:120px 120px;opacity:0.5;
  }
  .final-cta h2{position:relative;z-index:1;color:var(--sg-ink);font-size:clamp(26px,3.4vw,36px);margin-bottom:var(--sg-space-4);}
  .final-cta p{position:relative;z-index:1;color:rgba(14,16,14,0.75);font-size:15.5px;max-width:420px;}
  .final-cta-actions{position:relative;z-index:1;display:flex;flex-direction:column;gap:12px;}
  .final-cta .btn{width:100%;}

  /* ---------- Footer ---------- */
  footer{background:var(--sg-ink);color:rgba(255,255,255,0.7);padding:var(--sg-space-16) 0 var(--sg-space-8);}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:var(--sg-space-8);margin-bottom:var(--sg-space-12);}
  @media(min-width:760px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;}}
  .footer-logo{font-family:var(--sg-font-display);font-size:22px;color:var(--sg-white);margin-bottom:var(--sg-space-4);}
  .footer-logo span{color:var(--sg-green-400);}
  .footer-desc{font-size:13.5px;color:rgba(255,255,255,0.5);max-width:280px;margin-bottom:var(--sg-space-6);}
  .footer-col h5{font-family:var(--sg-font-mono);font-size:11.5px;letter-spacing:0.08em;text-transform:uppercase;color:rgba(255,255,255,0.4);margin-bottom:var(--sg-space-4);}
  .footer-col ul{display:grid;gap:10px;}
  .footer-col a{font-size:13.5px;color:rgba(255,255,255,0.65);transition:color .2s ease;}
  .footer-col a:hover{color:var(--sg-green-300);}
  .footer-bottom{border-top:1px solid var(--sg-line-dark);padding-top:var(--sg-space-6);display:flex;flex-direction:column;gap:var(--sg-space-4);font-size:12.5px;color:rgba(255,255,255,0.4);}
  @media(min-width:700px){.footer-bottom{flex-direction:row;justify-content:space-between;align-items:center;}}
  .footer-legal-links{display:flex;gap:var(--sg-space-6);}

  /* reveal on scroll */
  .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease, transform .7s ease;}
  .reveal.in{opacity:1;transform:translateY(0);}

  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    .reveal{transition:none;opacity:1;transform:none;}
    .sim-seal, .seal-ring-text{animation:none;}
  }