/* 메가파일 무료쿠폰 - Global Styles */
* { box-sizing: border-box; margin: 0; padding: 0; }
:root{
  --primary:#1e6bff;
  --primary-dark:#0a3d99;
  --accent:#ffb800;
  --bg:#f5f8ff;
  --card:#ffffff;
  --text:#0f1b3d;
  --muted:#5b6890;
  --border:#e3eaf7;
  --success:#10b981;
  --danger:#ef4444;
  --radius:14px;
  --shadow:0 6px 20px rgba(20,40,90,0.08);
}
html,body{font-family:'Pretendard','Apple SD Gothic Neo','Malgun Gothic',-apple-system,BlinkMacSystemFont,sans-serif;color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--primary);text-decoration:none;}
a:hover{text-decoration:underline;}
.container{max-width:1080px;margin:0 auto;padding:0 20px;}

/* Header */
.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50;}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:64px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--text);}
.brand img{width:32px;height:32px;border-radius:8px;}
.nav{display:flex;gap:22px;}
.nav a{color:var(--muted);font-weight:600;font-size:15px;}
.nav a.active,.nav a:hover{color:var(--primary);text-decoration:none;}

/* Hero */
.hero{background:linear-gradient(135deg,#0a3d99 0%,#1e6bff 60%,#3a8bff 100%);color:#fff;padding:60px 0 70px;position:relative;overflow:hidden;}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(800px 300px at 80% 20%,rgba(255,184,0,0.25),transparent 60%);pointer-events:none;}
.hero-grid{display:grid;grid-template-columns:1.1fr 0.9fr;gap:40px;align-items:center;position:relative;z-index:1;}
.hero h1{font-size:42px;line-height:1.25;font-weight:900;letter-spacing:-0.5px;margin-bottom:14px;}
.hero h1 .point{color:var(--accent);}
.hero p.lead{font-size:18px;opacity:.95;margin-bottom:26px;}
.hero-badge{display:inline-block;background:rgba(255,255,255,0.18);border:1px solid rgba(255,255,255,0.3);padding:6px 14px;border-radius:999px;font-size:13px;font-weight:700;margin-bottom:18px;backdrop-filter:blur(6px);}
.cta{display:inline-flex;align-items:center;gap:10px;background:var(--accent);color:#1a1a1a;padding:16px 30px;border-radius:12px;font-weight:800;font-size:17px;border:none;cursor:pointer;box-shadow:0 8px 22px rgba(255,184,0,0.45);transition:transform .15s ease, box-shadow .15s ease;}
.cta:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,184,0,0.55);text-decoration:none;}
.cta.secondary{background:#fff;color:var(--primary-dark);box-shadow:0 6px 16px rgba(0,0,0,0.15);}
.hero-img{border-radius:18px;box-shadow:0 20px 50px rgba(0,0,0,0.25);}

/* Sections */
section{padding:60px 0;}
section h2{font-size:30px;font-weight:900;margin-bottom:12px;letter-spacing:-0.3px;}
section .sub{color:var(--muted);font-size:16px;margin-bottom:32px;max-width:720px;}

/* Coupon box */
.coupon-box{background:#fff;border:2px dashed var(--primary);border-radius:var(--radius);padding:30px;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;box-shadow:var(--shadow);}
.coupon-box .info h3{font-size:22px;margin-bottom:6px;}
.coupon-box .info p{color:var(--muted);font-size:14px;}
.coupon-value{font-size:28px;font-weight:900;color:var(--primary);}

/* Cards */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .15s ease;}
.card:hover{transform:translateY(-3px);}
.card img{border-radius:10px;margin-bottom:14px;aspect-ratio:4/3;object-fit:cover;}
.card h3{font-size:18px;margin-bottom:8px;}
.card p{color:var(--muted);font-size:14px;}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.step{background:#fff;border-radius:var(--radius);padding:22px;border:1px solid var(--border);position:relative;}
.step .n{position:absolute;top:-14px;left:18px;background:var(--primary);color:#fff;width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;}
.step h4{font-size:16px;margin:8px 0;}
.step p{color:var(--muted);font-size:13.5px;}

/* Table */
.table-wrap{overflow-x:auto;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);}
table{width:100%;border-collapse:collapse;min-width:600px;}
th,td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--border);font-size:14.5px;}
th{background:#f1f6ff;font-weight:800;color:var(--primary-dark);}
tr:last-child td{border-bottom:none;}
td.good{color:var(--success);font-weight:700;}
td.bad{color:var(--danger);font-weight:700;}

/* Calculator */
.calc{background:#fff;border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);display:grid;grid-template-columns:1fr 1fr;gap:30px;}
.calc .field{margin-bottom:16px;}
.calc label{display:block;font-weight:700;margin-bottom:6px;font-size:14px;color:var(--text);}
.calc input,.calc select{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:10px;font-size:15px;font-family:inherit;}
.calc input:focus,.calc select:focus{outline:none;border-color:var(--primary);}
.calc .result{background:linear-gradient(135deg,#eaf2ff,#f7faff);border-radius:12px;padding:24px;display:flex;flex-direction:column;justify-content:center;}
.calc .result .row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px dashed var(--border);font-size:15px;}
.calc .result .row:last-child{border-bottom:none;font-size:20px;font-weight:900;color:var(--primary);margin-top:8px;}

/* FAQ */
.faq details{background:#fff;border:1px solid var(--border);border-radius:10px;padding:16px 20px;margin-bottom:10px;}
.faq summary{cursor:pointer;font-weight:700;font-size:16px;list-style:none;display:flex;justify-content:space-between;align-items:center;}
.faq summary::after{content:"+";font-size:22px;color:var(--primary);}
.faq details[open] summary::after{content:"−";}
.faq details p{margin-top:12px;color:var(--muted);font-size:14.5px;}

/* Gallery */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.gallery img{border-radius:10px;aspect-ratio:4/3;object-fit:cover;}

/* Footer */
footer{background:#0a1733;color:#cfd8ee;padding:36px 0;margin-top:40px;font-size:14px;}
footer .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;}
footer a{color:#9fbcff;}

/* Responsive */
@media (max-width:860px){
  .hero-grid{grid-template-columns:1fr;}
  .hero h1{font-size:32px;}
  .grid-3{grid-template-columns:1fr;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .calc{grid-template-columns:1fr;}
  .coupon-box{grid-template-columns:1fr;text-align:center;}
  .gallery{grid-template-columns:repeat(2,1fr);}
  .nav{gap:14px;}
  .nav a{font-size:13px;}
  section h2{font-size:24px;}
}