@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --blue: #2563eb;
  --violet: #7c3aed;
  --pink: #ec4899;
  --navy: #0f172a;
  --bg: #f8fafc;
  --card: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --muted: #64748b;
  --grad: linear-gradient(135deg, #2563eb 0%, #7c3aed 45%, #ec4899 100%);
  --grad-soft: linear-gradient(135deg, rgba(37,99,235,.08) 0%, rgba(124,58,237,.08) 45%, rgba(236,72,153,.08) 100%);
  --radius: 16px;
  --shadow: 0 1px 2px rgba(15,23,42,.04), 0 10px 30px rgba(15,23,42,.07);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue); }

.site-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- 헤더 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 64px;
}
.site-brand { display: flex; flex-direction: column; text-decoration: none; line-height: 1.1; }
.site-brand-name {
  font-size: 20px; font-weight: 800; letter-spacing: .02em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.site-brand-tag { font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.site-nav { display: flex; gap: 22px; margin-left: auto; }
.site-nav a { color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 600; }
.site-nav a:hover, .site-nav a.active { color: var(--text); }
.site-cta-btn {
  background: var(--grad); color: #fff; text-decoration: none;
  padding: 9px 18px; border-radius: 10px; font-size: 14px; font-weight: 700;
  box-shadow: 0 2px 10px rgba(124,58,237,.3);
}
.site-cta-btn:hover { filter: brightness(1.06); }

/* ---------- 버튼 ---------- */
.btn-primary, .btn-ghost {
  display: inline-block; text-decoration: none; font-weight: 700; cursor: pointer;
  padding: 11px 22px; border-radius: 12px; font-size: 15px; border: 1px solid transparent;
  transition: transform .12s ease, filter .12s ease, background .12s ease;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 4px 16px rgba(124,58,237,.28); }
.btn-primary:hover { transform: translateY(-1px); filter: brightness(1.05); }
.btn-ghost { background: var(--card); color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: #f1f5f9; }
.btn-lg { padding: 14px 30px; font-size: 16px; }

/* ---------- 히어로 ---------- */
.hero {
  background:
    radial-gradient(circle at 12% 15%, rgba(37,99,235,.12), transparent 42%),
    radial-gradient(circle at 88% 20%, rgba(236,72,153,.12), transparent 42%),
    var(--bg);
  padding: 92px 0 76px;
  text-align: center;
}
.hero-badge {
  display: inline-block; padding: 5px 14px; border-radius: 999px; font-size: 12px; font-weight: 700;
  color: var(--violet); background: var(--grad-soft); border: 1px solid rgba(124,58,237,.18);
  text-transform: uppercase; letter-spacing: .06em; margin-bottom: 20px;
}
.hero-title { font-size: 46px; font-weight: 800; letter-spacing: -.02em; margin: 0 0 18px; line-height: 1.15; }
.hero-sub { font-size: 18px; color: var(--muted); max-width: 640px; margin: 0 auto 28px; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero-note { margin-top: 16px; font-size: 13px; color: #94a3b8; }

/* ---------- 섹션 ---------- */
.section { padding: 68px 0; }
.section-alt { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-title { font-size: 30px; font-weight: 800; letter-spacing: -.01em; text-align: center; margin: 0 0 14px; color: var(--navy); }
.section-lead { font-size: 16px; color: var(--muted); max-width: 720px; margin: 0 auto 18px; text-align: center; }

/* ---------- 기능 카드 ---------- */
.feature-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 36px;
}
.feature-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow); transition: transform .15s ease, box-shadow .15s ease;
}
.feature-card:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(15,23,42,.1); }
.feature-icon {
  width: 46px; height: 46px; display: flex; align-items: center; justify-content: center;
  font-size: 22px; border-radius: 12px; background: var(--grad-soft); margin-bottom: 14px;
}
.feature-card h3 { margin: 0 0 8px; font-size: 17px; color: var(--navy); }
.feature-card p { margin: 0; color: var(--muted); font-size: 14px; }

/* ---------- 단계 ---------- */
.step-list { list-style: none; margin: 36px auto 0; padding: 0; max-width: 720px; display: flex; flex-direction: column; gap: 14px; }
.step-list li { display: flex; gap: 16px; align-items: flex-start; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 22px; box-shadow: var(--shadow); }
.step-num { flex-shrink: 0; width: 34px; height: 34px; border-radius: 50%; background: var(--grad); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; }
.step-list h3 { margin: 2px 0 4px; font-size: 16px; color: var(--navy); }
.step-list p { margin: 0; color: var(--muted); font-size: 14px; }

/* ---------- 요금제 요약 ---------- */
.plan-summary-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 36px; }
.plan-summary-card { position: relative; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 20px; box-shadow: var(--shadow); }
.plan-summary-card.featured { border-color: transparent; background: linear-gradient(var(--card),var(--card)) padding-box, var(--grad) border-box; }
.plan-tag { position: absolute; top: -11px; right: 16px; background: var(--grad); color: #fff; font-size: 11px; font-weight: 700; padding: 3px 12px; border-radius: 999px; }
.plan-summary-card h3 { margin: 0 0 8px; font-size: 18px; color: var(--navy); }
.plan-summary-card p { margin: 0; color: var(--muted); font-size: 14px; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 760px; margin: 32px auto 0; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 6px 20px; box-shadow: var(--shadow); }
.faq-item summary { cursor: pointer; font-weight: 700; padding: 14px 0; color: var(--navy); list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; float: right; color: var(--violet); font-weight: 800; }
.faq-item[open] summary::after { content: '−'; }
.faq-item p { margin: 0 0 16px; color: var(--muted); font-size: 15px; }

/* ---------- CTA 밴드 ---------- */
.center-cta { text-align: center; margin-top: 36px; }
.cta-band { background: var(--grad); padding: 64px 0; text-align: center; color: #fff; }
.cta-band h2 { font-size: 30px; font-weight: 800; margin: 0 0 8px; }
.cta-band p { margin: 0 0 24px; opacity: .92; }
.cta-band .btn-primary { background: #fff; color: var(--violet); box-shadow: 0 8px 24px rgba(0,0,0,.18); }

/* ---------- 서브페이지 ---------- */
.page-hero { background: var(--grad-soft); border-bottom: 1px solid var(--border); padding: 56px 0 40px; text-align: center; }
.page-hero h1 { font-size: 34px; font-weight: 800; margin: 0 0 10px; color: var(--navy); }
.page-hero p { margin: 0; color: var(--muted); font-size: 16px; }
.prose { max-width: 760px; margin: 0 auto; }
.prose h2 { font-size: 21px; color: var(--navy); margin: 34px 0 10px; }
.prose p, .prose li { color: #334155; font-size: 15.5px; }
.prose ul { padding-left: 20px; }
.prose-meta { color: #94a3b8; font-size: 13px; margin-top: 30px; }

/* ---------- 문의 카드 ---------- */
.contact-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 22px; box-shadow: var(--shadow); margin: 20px 0; }
.contact-row { display: flex; gap: 14px; padding: 13px 0; border-bottom: 1px solid var(--border); font-size: 15px; }
.contact-row:last-child { border-bottom: none; }
.contact-label { width: 90px; flex-shrink: 0; color: var(--muted); font-weight: 600; }

/* ---------- 푸터 ---------- */
.site-footer { background: var(--navy); color: #cbd5e1; padding: 52px 0 24px; margin-top: 0; }
.site-footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 28px; }
.site-footer .site-brand-name { font-size: 22px; }
.site-footer-desc { color: #94a3b8; font-size: 14px; margin: 10px 0 6px; }
.site-footer-company { color: #64748b; font-size: 13px; margin: 0; }
.site-footer-col h4 { color: #f1f5f9; font-size: 14px; margin: 0 0 12px; }
.site-footer-col a { display: block; color: #cbd5e1; text-decoration: none; font-size: 14px; margin-bottom: 9px; }
.site-footer-col a:hover { color: #fff; }
.site-footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 32px; padding-top: 20px; color: #64748b; font-size: 13px; text-align: center; }

/* ---------- 반응형 ---------- */
@media (max-width: 860px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .plan-summary-grid { grid-template-columns: repeat(2, 1fr); }
  .site-footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-title { font-size: 36px; }
}
@media (max-width: 560px) {
  .site-nav { display: none; }
  .feature-grid, .plan-summary-grid, .site-footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 64px 0 52px; }
  .hero-title { font-size: 30px; }
  .section { padding: 52px 0; }
  .section-title { font-size: 25px; }
}