:root{
  --bg:#0f0b17;            /* พื้นหลังมืดม่วงอมดำ */
  --bg-2:#161127;          /* พื้นหลังซ้อน */
  --primary:#6d28d9;       /* ม่วงเข้ม */
  --primary-2:#8b5cf6;     /* ม่วงไลต์ */
  --highlight:#b794f4;     /* ไฮไลต์ */
  --text:#e7e2f4;          /* ตัวอักษรหลัก */
  --muted:#b4a8d6;         /* ตัวอักษรรอง */
  --card:#1b1430;          /* พื้นการ์ด */
  --success:#10b981;       /* เขียวสำเร็จ */
  --warning:#f59e0b;       /* เหลืองเตือน */
  --danger:#ef4444;        /* แดงเตือน */
  --radius:16px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:radial-gradient(1200px 800px at 80% -10%, rgba(139,92,246,.25), transparent 60%),
 linear-gradient(180deg, #100b1a 0%, #0f0b17 100%);color:var(--text);font:16px/1.7 system-ui,-apple-system,Segoe UI,Roboto,Inter,Arial,sans-serif}
img{max-width:100%;height:auto;border-radius:12px}
a{color:var(--highlight);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1180px;margin:0 auto;padding:0 20px}

/* Header (Desktop) */
.header{position:relative;background:transparent}
.header .bar{display:flex;gap:24px;align-items:center;justify-content:space-between;padding:18px 0}
.logo{display:flex;gap:12px;align-items:center}
.logo .mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--primary-2));box-shadow:var(--shadow)}
.logo .brand{font-weight:700;letter-spacing:.4px}
.nav{display:flex;gap:18px}
.nav a{padding:10px 14px;border-radius:10px}
.nav a:hover{background:rgba(139,92,246,.12)}
.cta-btn{background:linear-gradient(135deg,var(--primary-2),var(--primary));padding:10px 16px;border-radius:12px;color:white;border:0;font-weight:600;cursor:pointer;box-shadow:var(--shadow)}
.cta-btn:hover{opacity:.95}

/* Mobile Top‑Sheet Menu (ส่วนหัวเวอร์ชันมือถือเป็นป๊อปอัพเลื่อนลง) */
.mobile-menu-toggle{display:none}
@media (max-width: 768px){
  .nav{display:none}
  .mobile-menu-toggle{display:block;background:linear-gradient(135deg,var(--primary-2),var(--primary));color:#fff;border:0;border-radius:12px;padding:10px 14px;font-weight:700}
}

.top-sheet{position:fixed;inset:0 0 auto 0;transform:translateY(-100%);background:rgba(22,17,39,.98);backdrop-filter:blur(10px);border-bottom-left-radius:18px;border-bottom-right-radius:18px;box-shadow:0 40px 60px rgba(0,0,0,.55);transition:transform .35s ease;z-index:9999}
.top-sheet.open{transform:translateY(0)}
.top-sheet .panel{max-width:1180px;margin:0 auto;padding:18px 20px 28px}
.top-sheet .menu a{display:block;padding:14px 8px;border-radius:12px;font-size:18px}
.top-sheet .menu a:hover{background:rgba(139,92,246,.12)}
.top-sheet .close{display:inline-block;margin-top:4px;background:transparent;border:2px solid rgba(139,92,246,.35);color:var(--text);padding:8px 14px;border-radius:10px}

/* Hero */
.hero{padding:48px 0 24px}
.hero .stage{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center}
.hero h1{font-size:clamp(28px,4vw,44px);line-height:1.2;margin:0 0 12px}
.hero p.lead{font-size:18px;color:var(--muted);margin:0 0 18px}
.hero .tag{display:inline-flex;gap:8px;align-items:center;border:1px solid rgba(139,92,246,.35);border-radius:999px;padding:8px 12px 8px 8px;margin-bottom:14px}
.hero .tag i{width:8px;height:8px;border-radius:999px;background:var(--success);box-shadow:0 0 12px rgba(16,185,129,.6)}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:16px}
.kpi{background:linear-gradient(180deg,rgba(109,40,217,.22),rgba(27,20,48,.6));border:1px solid rgba(139,92,246,.25);padding:16px;border-radius:14px;text-align:center}
.kpi b{font-size:22px;display:block}

@media (max-width: 980px){
  .hero .stage{grid-template-columns:1fr;gap:18px}
  .kpis{grid-template-columns:repeat(2,1fr)}
}

.mobile-top-stack{display:none}
@media (max-width:768px){
  .mobile-top-stack{display:block;margin:0;padding:0}
  .mobile-top-stack a{display:block;line-height:0}
  .mobile-top-stack img{width:100%;height:auto;display:block}
}

/* Sections */
.section{padding:48px 0}
.section h2{font-size:clamp(22px,3.2vw,32px);margin:0 0 10px}
.section p{margin:8px 0;color:var(--text)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media (max-width: 980px){.grid-3{grid-template-columns:1fr}.grid-2{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid rgba(139,92,246,.18);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.card h3{margin:6px 0 8px;font-size:20px}
.badge{display:inline-block;background:rgba(139,92,246,.18);border:1px solid rgba(139,92,246,.35);padding:6px 10px;border-radius:999px;font-size:12px;color:var(--highlight)}

/* Portfolio */
.portfolio .item{display:grid;grid-template-columns:1fr .9fr;gap:18px}
.portfolio .item:nth-child(even){grid-template-columns:.9fr 1fr}
@media (max-width: 980px){.portfolio .item,.portfolio .item:nth-child(even){grid-template-columns:1fr}}

/* Testimonials */
.testi{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media (max-width: 980px){.testi{grid-template-columns:1fr}}
.quote{font-style:italic;color:#eae3ff}

/* Blog */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media (max-width: 980px){.blog-grid{grid-template-columns:1fr}}

/* FAQ */
.faq details{background:var(--card);border:1px solid rgba(139,92,246,.25);border-radius:14px;padding:14px;margin:10px 0}
.faq summary{cursor:pointer;font-weight:600}

/* Contact */
.contact .form{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.contact .form textarea{grid-column:1/-1}
input,textarea,select{width:100%;background:rgba(255,255,255,.04);border:1px solid rgba(139,92,246,.25);color:var(--text);border-radius:12px;padding:12px;outline:none}
input:focus,textarea:focus,select:focus{border-color:var(--highlight)}

/* Footer */
.footer{padding:28px 0 60px;border-top:1px solid rgba(139,92,246,.2);background:linear-gradient(180deg,rgba(139,92,246,.06),transparent)}
.footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:18px}
@media (max-width: 980px){.footer .cols{grid-template-columns:1fr}}
.small{font-size:13px;color:var(--muted)}

/* Utility */
.row{display:flex;gap:12px;align-items:center}
.spacer{height:14px}
.shadow{box-shadow:var(--shadow)}
.center{text-align:center}
.visually-hidden{position:absolute!important;clip:rect(1px,1px,1px,1px);padding:0;border:0;height:1px;width:1px;overflow:hidden}

/* Ads/Compliance helpers */
.safe-list{list-style:disc;padding-left:20px;color:var(--muted)}
.csp-banner{background:rgba(16,185,129,.12);border:1px solid rgba(16,185,129,.35);padding:10px;border-radius:12px;margin:10px 0}