/* ===== Shared Sub-page Styles ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#050507;--surface:#0c0c10;--surface2:#111116;--surface3:#18181d;
  --border:rgba(255,255,255,.06);--border2:rgba(255,255,255,.1);
  --text:#e4e4e7;--dim:#9d9da8;--muted:#71717a;
  --accent:#3b82f6;--accent2:#60a5fa;--accent-dim:rgba(59,130,246,.08);
  --radius:14px;--max:800px;
  --font:'Inter',system-ui,-apple-system,sans-serif;
}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.8;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:underline;text-underline-offset:2px;transition:color .15s}
a:hover{color:var(--accent2)}
::selection{background:var(--accent);color:#fff}

/* Top bar */
.topbar{
  position:sticky;top:0;z-index:100;
  background:rgba(5,5,7,.9);backdrop-filter:blur(20px) saturate(1.3);
  border-bottom:1px solid var(--border);padding:0 32px
}
.topbar-inner{max-width:var(--max);margin:0 auto;height:56px;display:flex;align-items:center;justify-content:space-between}
.topbar-logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:#fff}
.topbar-logo svg{height:22px}
.topbar-nav{display:flex;align-items:center;gap:16px}
.topbar-link{font-size:13px;font-weight:500;color:var(--dim);text-decoration:none;transition:color .15s}
.topbar-link:hover{color:#fff}
.topbar-lang{
  background:rgba(255,255,255,.04);border:1px solid var(--border);border-radius:6px;
  padding:4px 10px;color:var(--dim);font-size:12px;font-weight:600;
  cursor:pointer;font-family:var(--font);transition:all .15s
}
.topbar-lang:hover{background:rgba(255,255,255,.08);color:#fff}

/* Page content */
.page{max-width:var(--max);margin:0 auto;padding:64px 32px 80px}
.page-title{font-size:clamp(32px,5vw,48px);font-weight:900;color:#fff;letter-spacing:-.04em;margin-bottom:12px}
.page-subtitle{font-size:17px;color:var(--dim);line-height:1.8;margin-bottom:48px;max-width:600px}

/* Sections */
.s-title{font-size:24px;font-weight:800;color:#fff;letter-spacing:-.02em;margin:48px 0 16px}
.s-title:first-of-type{margin-top:0}
.s-text{font-size:15px;color:var(--dim);line-height:1.9;margin-bottom:20px}
.s-text strong{color:var(--text);font-weight:600}

/* Cards grid */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;margin:24px 0 32px}
.info-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;transition:all .2s
}
.info-card:hover{border-color:var(--border2)}
.info-card h3{font-size:16px;font-weight:700;color:#fff;margin-bottom:8px}
.info-card p{font-size:13px;color:var(--dim);line-height:1.7}

/* Timeline */
.timeline{position:relative;padding-left:28px;margin:24px 0 32px}
.timeline::before{content:'';position:absolute;left:6px;top:4px;bottom:4px;width:2px;background:var(--border2)}
.timeline-item{position:relative;margin-bottom:24px}
.timeline-item::before{
  content:'';position:absolute;left:-24px;top:8px;width:10px;height:10px;
  border-radius:50%;background:var(--accent);border:2px solid var(--bg)
}
.timeline-year{font-size:12px;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.06em;margin-bottom:4px}
.timeline-text{font-size:14px;color:var(--dim);line-height:1.7}

/* Blog list */
.blog-list{display:flex;flex-direction:column;gap:20px;margin-top:32px}
.blog-card{
  display:block;text-decoration:none;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px 32px;transition:all .3s
}
.blog-card:hover{border-color:var(--border2);transform:translateY(-2px);box-shadow:0 12px 40px rgba(0,0,0,.4)}
.blog-tag{
  display:inline-block;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;
  padding:3px 10px;border-radius:99px;margin-bottom:12px
}
.blog-tag.tools{background:rgba(59,130,246,.1);color:#60a5fa}
.blog-tag.finance{background:rgba(245,158,11,.1);color:#fbbf24}
.blog-tag.privacy{background:rgba(139,92,246,.1);color:#a78bfa}
.blog-tag.business{background:rgba(16,185,129,.1);color:#34d399}
.blog-card h2{font-size:20px;font-weight:800;color:#fff;letter-spacing:-.02em;margin-bottom:8px;text-decoration:none}
.blog-card p{font-size:14px;color:var(--dim);line-height:1.7}
.blog-meta{display:flex;gap:16px;margin-top:12px;font-size:12px;color:var(--muted)}

/* Article */
.article{max-width:var(--max);margin:0 auto;padding:48px 32px 80px}
.article-header{margin-bottom:40px}
.article-tag{margin-bottom:16px}
.article-title{font-size:clamp(28px,4.5vw,40px);font-weight:900;color:#fff;letter-spacing:-.03em;line-height:1.2;margin-bottom:12px}
.article-meta{font-size:13px;color:var(--muted);display:flex;gap:16px;margin-bottom:16px}
.article-intro{font-size:16px;color:var(--dim);line-height:1.9;padding:20px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.article h2{font-size:22px;font-weight:800;color:#fff;margin:40px 0 14px;letter-spacing:-.02em}
.article h3{font-size:17px;font-weight:700;color:#fff;margin:28px 0 10px}
.article p{font-size:15px;color:var(--dim);line-height:1.9;margin-bottom:16px}
.article ul,.article ol{margin:12px 0 20px 20px;color:var(--dim);font-size:15px;line-height:2}
.article li{margin-bottom:4px}
.article strong{color:var(--text)}
.article-cta{
  margin:48px 0 0;padding:32px;border-radius:var(--radius);
  background:var(--accent-dim);border:1px solid rgba(59,130,246,.15);text-align:center
}
.article-cta h3{margin:0 0 8px;color:#fff}
.article-cta p{color:var(--dim);margin-bottom:16px}
.article-cta .cta-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 28px;background:var(--accent);color:#fff;
  font-size:15px;font-weight:600;border-radius:10px;text-decoration:none;transition:all .2s
}
.article-cta .cta-btn:hover{background:var(--accent2);transform:translateY(-1px)}

/* Related posts */
.related{margin:48px 0 0;padding-top:32px;border-top:1px solid var(--border)}
.related h3{font-size:14px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:16px}
.related-list{display:flex;flex-direction:column;gap:12px}
.related-link{
  display:block;text-decoration:none;padding:16px 20px;
  background:var(--surface);border:1px solid var(--border);border-radius:10px;
  font-size:14px;font-weight:600;color:var(--text);transition:all .2s
}
.related-link:hover{border-color:var(--border2);color:var(--accent);transform:translateX(4px)}
.related-link span{display:block;font-size:11px;font-weight:600;color:var(--muted);margin-bottom:4px;text-transform:uppercase;letter-spacing:.06em}

/* Product hero */
.product-hero{text-align:center;margin-bottom:48px}
.product-icon-lg{width:64px;height:64px;margin:0 auto 20px;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.03);border:1px solid var(--border2);border-radius:16px}
.product-icon-lg svg{width:32px;height:32px}
.product-hero .page-title{margin-bottom:4px}
.product-hero .page-subtitle{max-width:100%;margin-bottom:24px}
.product-domain{font-size:13px;font-weight:600;color:var(--pc,var(--accent));margin-bottom:16px;letter-spacing:.02em}
.product-cta-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 32px;background:var(--pc,var(--accent));color:#fff;
  font-size:16px;font-weight:700;border-radius:12px;text-decoration:none;transition:all .2s;
  box-shadow:0 4px 20px rgba(0,0,0,.3)
}
.product-cta-btn:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(0,0,0,.4);color:#fff;filter:brightness(1.1)}

/* Feature list */
.feature-list{list-style:none;padding:0;margin:16px 0 32px}
.feature-list li{
  position:relative;padding:12px 0 12px 28px;font-size:15px;color:var(--dim);line-height:1.7;
  border-bottom:1px solid var(--border)
}
.feature-list li:last-child{border-bottom:none}
.feature-list li::before{content:'';position:absolute;left:0;top:18px;width:8px;height:8px;border-radius:50%;background:var(--accent)}
.feature-list li strong{color:var(--text)}

/* Footer */
.page-footer{
  border-top:1px solid var(--border);padding:24px 32px;
  text-align:center;font-size:12px;color:var(--muted)
}
.page-footer a{color:var(--dim);margin:0 8px}

/* Responsive */
@media(max-width:768px){
  .topbar{padding:0 20px}
  .page,.article{padding-left:20px;padding-right:20px}
  .card-grid{grid-template-columns:1fr}
  .blog-card{padding:22px 24px}
  .topbar-link{display:none}
}
@media(max-width:480px){
  .topbar{padding:0 16px}
  .page,.article{padding-left:16px;padding-right:16px}
  .blog-card{padding:20px}
}