:root{
  --bg: #ffffff;
  --ink: #0f172a;
  --muted: #475569;
  --line: #e5e7eb;
  --soft: #f1f5f9;
  --soft2:#eef2ff;
  --blue: #1d4ed8;
  --sky: #0ea5e9;
  --red: #dc2626;
  --shadow: 0 18px 55px rgba(2, 6, 23, 0.10);
  --shadow2: 0 10px 30px rgba(2, 6, 23, 0.08);
  --radius: 18px;
  --max: 1160px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background:
    radial-gradient(1200px 600px at 75% 0%, rgba(14,165,233,.18), transparent 55%),
    radial-gradient(1000px 520px at 10% 20%, rgba(29,78,216,.12), transparent 55%),
    linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  color: var(--ink);
  line-height: 1.6;
}

img{max-width:100%; height:auto; display:block}
a{color:inherit;text-decoration:none}
a:hover{opacity:.95}

.container{width:min(var(--max), calc(100% - 44px)); margin:0 auto}

.site-header{
  position: sticky; top:0; z-index: 50;
  background: rgba(255,255,255,.86);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.header-inner{display:flex; align-items:center; justify-content:space-between; gap:16px; padding: 12px 0}

.brand{display:flex; align-items:center; gap:12px; font-weight:800}
.brand img{height:46px; width:auto; display:block}
.nav{display:flex; gap:18px; align-items:center}
.nav a{color: #0f172a; font-weight:600; font-size: 14px}
.nav a.active{color: var(--blue)}
.nav a.btn{color:#ffffff}
.nav-toggle{
  display:none;
  border: 1px solid var(--line);
  background:#fff;
  border-radius: 12px;
  padding: 8px 10px;
  cursor:pointer;
}

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding: 12px 16px;
  border-radius: 999px;
  color: #fff;
  font-weight:800;
  border:0;
  background: linear-gradient(135deg, var(--blue), var(--sky));
  box-shadow: var(--shadow2);
  transform: translateZ(0);
  transition: transform .18s ease, box-shadow .18s ease, filter .18s ease;
}
.btn:hover{transform: translateY(-2px); box-shadow: var(--shadow)}
.btn:active{transform: translateY(0)}
.btn-sm{padding:10px 14px; font-size: 13px}
.btn-ghost{
  background:#fff;
  color: var(--ink);
  border: 1px solid var(--line);
}
.btn-ghost:hover{filter: brightness(0.98)}

.pill-btn{
  display:inline-flex; align-items:center; gap:10px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background:#fff;
  color: var(--ink);
  font-weight:700;
  font-size: 13px;
}

.kicker{
  display:inline-block;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 10px;
}

.hero{padding: 56px 0 22px}
.hero-inner{
  display:grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 28px;
  align-items:center;
}
h1{font-size: clamp(34px, 4.3vw, 54px); line-height:1.06; margin:0 0 12px}
.lead{color: var(--muted); font-size: 18px; margin: 0 0 18px}
.hero-cta{display:flex; gap:12px; flex-wrap:wrap; margin-top: 10px}

.hero-card{
  border-radius: 24px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 10px;
  overflow:hidden;
}
.hero-card img{border-radius: 18px}

.section{padding: 50px 0}
.section-head{margin-bottom: 18px}
.section-head h2{margin:0 0 6px; font-size: clamp(22px, 2.6vw, 30px)}
.section-head p{margin:0; color: var(--muted)}

.cards{display:grid; grid-template-columns: repeat(3, 1fr); gap: 16px}
.card{
  background:#fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow2);
  padding: 18px;
  transition: transform .18s ease, box-shadow .18s ease;
}
.card:hover{transform: translateY(-4px); box-shadow: var(--shadow)}
.card h3{margin: 0 0 8px; font-size: 16px}
.card p{margin: 0; color: var(--muted)}
.card .icon{
  width: 42px; height: 42px; border-radius: 14px;
  background: linear-gradient(135deg, rgba(29,78,216,.14), rgba(14,165,233,.14));
  display:grid; place-items:center;
  margin-bottom: 12px;
  color: var(--blue);
  font-weight:900;
}

.section-soft{
  background: linear-gradient(180deg, rgba(241,245,249,.75), rgba(255,255,255,.55));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}

.grid-2{display:grid; grid-template-columns: 1fr 1fr; gap: 16px}
.panel{
  background:#fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow2);
  padding: 18px;
}

.list{margin: 12px 0 0; padding-left: 18px}
.list li{margin: 7px 0}

.cta{
  display:flex; align-items:center; justify-content:space-between; gap: 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow2);
  padding: 18px;
}

.page-hero{padding: 34px 0 14px}
.page-hero h1{font-size: clamp(28px, 3.2vw, 40px)}
.breadcrumbs{color: var(--muted); font-size: 13px}

.article-card{
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 16px;
  align-items:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow2);
  padding: 18px;
}
.article-meta{color: var(--muted); font-size: 13px; margin: 8px 0}
.article-card h3{margin:0 0 6px; font-size: 20px}
.article-card p{margin:0; color: var(--muted)}
.article-card img{border-radius: 16px; border:1px solid var(--line)}

.purchase-grid{display:grid; grid-template-columns: repeat(3, 1fr); gap: 16px}
.purchase-card .badge{
  display:inline-flex; align-items:center; gap:8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--soft);
  border: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 10px;
}

.site-footer{
  border-top: 1px solid var(--line);
  padding: 20px 0;
  background: rgba(255,255,255,.85);
}
.footer-inner{display:flex; align-items:center; justify-content:space-between; gap: 12px}
.footer-links{display:flex; gap: 12px; color: var(--muted); font-size: 14px}
.footer-links a{color: var(--muted)}

.form label{display:block; font-weight:700; font-size: 14px; margin-bottom: 12px}
input,textarea,select{
  width: 100%;
  margin-top: 6px;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #fff;
  outline:none;
  font-size: 14px;
}
textarea{resize:vertical}
.form-hint{margin: 10px 0 0; color: var(--muted); font-size: 13px}

.nav.show{display:flex}

/* ---------- Animations (subtle) ---------- */
.reveal{opacity:0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease}
.reveal.in{opacity:1; transform: translateY(0)}
.floaty{animation: floaty 5.5s ease-in-out infinite}
@keyframes floaty{
  0%,100%{transform: translateY(0)}
  50%{transform: translateY(-8px)}
}
.sheen{
  position: relative;
  overflow:hidden;
}
.sheen::after{
  content:"";
  position:absolute; inset:-40%;
  background: linear-gradient(120deg, transparent 40%, rgba(255,255,255,.55) 50%, transparent 60%);
  transform: translateX(-60%) rotate(12deg);
  animation: sheen 6s ease-in-out infinite;
}
@keyframes sheen{
  0%{transform: translateX(-70%) rotate(12deg)}
  35%{transform: translateX(70%) rotate(12deg)}
  100%{transform: translateX(70%) rotate(12deg)}
}

/* Responsive */
@media (max-width: 980px){
  .hero-inner{grid-template-columns: 1fr}
  .cards{grid-template-columns: 1fr}
  .grid-2{grid-template-columns: 1fr}
  .purchase-grid{grid-template-columns: 1fr}
  .article-card{grid-template-columns: 1fr}
  .nav-toggle{display:inline-flex}
  .nav{
    display:none;
    position:absolute;
    top: 70px;
    right: 22px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 12px;
    flex-direction: column;
    min-width: 230px;
    box-shadow: var(--shadow2);
  }
}