:root{
  --ink:#1f2937; --muted:#6b7280; --bg:#f3f4f6; --white:#fff;
  --green:#81C784; --blue:#90CAF9; --yellow:#FFF59D; --orange:#FFAB91;
  --radius:18px; --shadow:0 8px 26px rgba(0,0,0,.08);
  --border:rgba(17,24,39,.08);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink)}
.container{max-width:1200px;margin:0 auto;padding:0 18px}
nav{position:sticky;top:0;background:rgba(255,255,255,.8);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);z-index:10}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{font-weight:900;letter-spacing:.4px}
.brand b{background:linear-gradient(90deg,#3B82F6,#06B6D4);-webkit-background-clip:text;color:transparent}
nav ul{display:flex;gap:16px;list-style:none;margin:0;padding:0}
nav a{text-decoration:none;color:var(--muted);font-weight:600}
nav a:hover{color:var(--ink)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:12px;border:1px solid var(--border);background:#fff;text-decoration:none;color:var(--ink);box-shadow:var(--shadow)}
.btn.primary{background:linear-gradient(90deg,#3B82F6,#06B6D4);border-color:transparent;color:#fff}
.hero{padding:56px 0 28px;background:linear-gradient(180deg,#ffffff,#eef6ff 50%,#ffffff)}
.hero h1{font-size:42px;line-height:1.1;margin:4px 0 10px}
.hero p{color:var(--muted);font-size:18px}
.grid-2{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:center}
.tag{display:inline-flex;align-items:center;gap:8px;border:1px dashed var(--border);padding:8px 12px;border-radius:999px;background:#fff;box-shadow:var(--shadow);color:var(--muted)}
.section{padding:50px 0}
h2{margin:0 0 14px}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.card{background:var(--white);border:1px solid var(--border);border-radius:28px;box-shadow:var(--shadow);overflow:hidden}
.card .head{padding:16px 18px;font-weight:800}
.card .sub{padding:0 18px 14px;color:var(--muted)}
.card .body{background:#fafafa;border-top-left-radius:26px;border-top-right-radius:26px;margin:0 12px;padding:22px;border:1px solid var(--border)}
.card .big{font-size:24px;font-weight:800;margin:8px 0}
.card .old{color:#9ca3af;text-decoration:line-through;font-weight:800}
.card .new{font-size:28px;font-weight:900;margin:6px 0}
.card .note{color:var(--muted);font-size:13px}
.card .foot{padding:18px;color:#111827;font-weight:800;display:flex;align-items:center;gap:8px}
.col-green .head{background:var(--green)}
.col-blue .head{background:var(--blue)}
.col-yellow .head{background:var(--yellow)}
.col-orange .head{background:var(--orange)}
.small{font-size:12px;color:var(--muted)}
.contact{display:grid;grid-template-columns:1fr 1fr;gap:16px}
input,textarea{width:100%;padding:12px;border-radius:12px;border:1px solid var(--border);background:#fff}
footer{padding:22px 0;color:var(--muted)}
@media(max-width:1024px){ .cards{grid-template-columns:1fr 1fr} .grid-2{grid-template-columns:1fr} }
@media(max-width:640px){ .cards{grid-template-columns:1fr} }