/* CertTrack Pro marketing site — shared styles */
:root{
  --brand:#0f6b5f; --brand-dark:#0a4c44; --accent:#e8734a; --ink:#1a2b32;
  --muted:#5b6b72; --bg:#f7f9f9; --card:#ffffff; --line:#e3e9e9; --ok:#1c7c46;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","Noto Sans","PingFang SC","Hiragino Sans","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.65}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.container{max-width:1080px;margin:0 auto;padding:0 20px}

/* header */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px;flex-wrap:wrap}
.logo{font-weight:800;font-size:1.15rem;color:var(--brand-dark);display:flex;align-items:center;gap:8px}
.logo .mark{width:28px;height:28px;border-radius:7px;background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:.85rem}
nav.main-nav{display:flex;gap:20px;flex-wrap:wrap;font-size:.95rem}
nav.main-nav a{color:var(--ink);font-weight:500}
nav.main-nav a:hover{color:var(--brand);text-decoration:none}
.lang-switch{font-size:.85rem;color:var(--muted)}
.lang-switch a{margin:0 3px;color:var(--muted)}
.lang-switch a.active{color:var(--brand);font-weight:700}
.btn{display:inline-block;padding:10px 22px;border-radius:8px;font-weight:600;font-size:.95rem;transition:.15s}
.btn:hover{text-decoration:none;opacity:.9}
.btn-primary{background:var(--brand);color:#fff}
.btn-outline{border:1.5px solid var(--brand);color:var(--brand)}
.btn-accent{background:var(--accent);color:#fff}
.btn-sm{padding:7px 16px;font-size:.88rem}

/* hero */
.hero{background:linear-gradient(160deg,var(--brand-dark),var(--brand));color:#fff;padding:72px 0 64px}
.hero h1{font-size:2.3rem;line-height:1.25;max-width:760px}
.hero p.lead{font-size:1.15rem;margin:18px 0 30px;max-width:680px;opacity:.92}
.hero .btn{margin-right:12px}
.hero .btn-outline{border-color:#fff;color:#fff}
.eyebrow{display:inline-block;background:rgba(255,255,255,.15);padding:4px 12px;border-radius:99px;font-size:.8rem;letter-spacing:.05em;text-transform:uppercase;margin-bottom:16px}

/* sections */
section{padding:64px 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 44px}
.section-head h2{font-size:1.8rem}
.section-head p{color:var(--muted);margin-top:10px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:26px}
.card h3{font-size:1.12rem;margin-bottom:10px}
.card p{color:var(--muted);font-size:.95rem}
.card .tag{display:inline-block;font-size:.75rem;background:#e6f2f0;color:var(--brand-dark);border-radius:99px;padding:2px 10px;margin-bottom:12px}
.product-card{display:flex;flex-direction:column}
.product-card .price{font-size:1.5rem;font-weight:800;color:var(--brand-dark);margin:12px 0 4px}
.product-card .price span{font-size:.85rem;color:var(--muted);font-weight:400}
.product-card ul{list-style:none;margin:12px 0 18px}
.product-card ul li{padding-left:20px;position:relative;color:var(--muted);font-size:.92rem;margin:5px 0}
.product-card ul li::before{content:"✓";color:var(--ok);position:absolute;left:0;font-weight:700}
.product-card .btn{margin-top:auto;text-align:center}
.feature-card .ico{font-size:1.6rem;margin-bottom:10px}

/* steps */
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:24px}
.step::before{counter-increment:step;content:counter(step);display:inline-flex;width:34px;height:34px;border-radius:50%;background:var(--brand);color:#fff;align-items:center;justify-content:center;font-weight:700;margin-bottom:12px}
.step h3{font-size:1.02rem;margin-bottom:6px}
.step p{color:var(--muted);font-size:.92rem}

/* faq */
.faq details{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px 20px;margin-bottom:12px}
.faq summary{font-weight:600;cursor:pointer}
.faq details p{color:var(--muted);margin-top:10px;font-size:.95rem}

/* pricing table */
.price-table{width:100%;border-collapse:collapse;background:var(--card);border-radius:12px;overflow:hidden}
.price-table th,.price-table td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;font-size:.95rem}
.price-table th{background:var(--brand);color:#fff}
.price-table td:first-child{font-weight:600}

/* legal */
.legal{background:#fff;padding:48px 0}
.legal h1{font-size:1.7rem;margin-bottom:8px}
.legal .updated{color:var(--muted);font-size:.85rem;margin-bottom:28px}
.legal h2{font-size:1.2rem;margin:28px 0 10px}
.legal h3{font-size:1.02rem;margin:18px 0 6px}
.legal p,.legal li{color:#3d4d54;font-size:.95rem}
.legal ul,.legal ol{padding-left:22px;margin:8px 0}
.legal table{width:100%;border-collapse:collapse;margin:12px 0;font-size:.92rem}
.legal th,.legal td{border:1px solid var(--line);padding:8px 12px;text-align:left}
.legal th{background:#eef4f3}

/* cta band */
.cta-band{background:var(--brand-dark);color:#fff;text-align:center;padding:56px 0}
.cta-band h2{font-size:1.6rem;margin-bottom:14px}
.cta-band .btn-primary{background:#fff;color:var(--brand-dark)}

/* footer */
.site-footer{background:#10201f;color:#c6d4d2;padding:44px 0 24px;font-size:.9rem}
.site-footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:28px}
.site-footer h4{color:#fff;font-size:.95rem;margin-bottom:12px}
.site-footer a{color:#c6d4d2;display:block;margin:5px 0}
.site-footer a:hover{color:#fff}
.site-footer .bottom{border-top:1px solid #234;border-top:1px solid rgba(255,255,255,.12);padding-top:16px;color:#8aa39f;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}

@media(max-width:900px){
  .grid-3,.grid-2,.steps{grid-template-columns:1fr}
  .site-footer .cols{grid-template-columns:1fr 1fr}
  .hero h1{font-size:1.7rem}
  .price-table{display:block;overflow-x:auto}
}