:root {
  --blue: #1a56db;
  --blue-dark: #1e40af;
  --blue-light: #eff6ff;
  --text: #0f172a;
  --text-sub: #475569;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --bg: #f8fafc;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.support-page {
  margin: 0;
  color: var(--text);
  background: #fff;
  font-family: "Malgun Gothic", "맑은 고딕", "Apple SD Gothic Neo", "Noto Sans KR", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.support-main { min-height: calc(100vh - 206px); }
.support-header {
  position: relative;
  overflow: hidden;
  padding: 68px 24px 54px;
  text-align: center;
  background: linear-gradient(180deg, #f8fbff 0%, #fff 100%);
  border-bottom: 1px solid var(--border);
}
.support-header::before, .support-header::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}
.support-header::before { width: 280px; height: 280px; left: -100px; top: -150px; background: radial-gradient(circle, rgba(26,86,219,.10), transparent 72%); }
.support-header::after { width: 340px; height: 340px; right: -120px; bottom: -220px; background: radial-gradient(circle, rgba(59,130,246,.10), transparent 72%); }
.support-header-inner { position: relative; z-index: 1; max-width: 1180px; margin: 0 auto; }
.breadcrumb { display: flex; align-items: center; justify-content: center; gap: 8px; margin-bottom: 19px; color: var(--text-muted); font-size: 13px; }
.breadcrumb a { color: inherit; text-decoration: none; }
.breadcrumb a:hover { color: var(--blue); }
.support-icon { width: 52px; height: 52px; margin: 0 auto 15px; border-radius: 16px; display: flex; align-items: center; justify-content: center; background: var(--blue-light); color: var(--blue); }
.support-icon svg { width: 26px; height: 26px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.support-header h1 { margin: 0; color: var(--text); font-size: 38px; font-weight: 700; line-height: 1.25; letter-spacing: -1.2px; }
.support-line { width: 44px; height: 3px; margin: 18px auto 0; border-radius: 99px; background: var(--blue); }
.support-tabs { position: sticky; top: 64px; z-index: 50; display: flex; justify-content: center; gap: 38px; min-height: 57px; padding: 0 24px; background: #fff; border-bottom: 1px solid var(--border); }
.support-tabs a { position: relative; display: inline-flex; align-items: center; padding: 0 5px; color: var(--text-sub); font-size: 14px; font-weight: 600; line-height: 57px; text-decoration: none; white-space: nowrap; }
.support-tabs a:hover, .support-tabs a:focus, .support-tabs a.is-active { color: var(--blue); }
.support-tabs a.is-active::after { content: ''; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--blue); }
.support-section { padding: 72px 24px 82px; }
.support-section.alt { background: var(--bg); }
.support-inner { width: 100%; max-width: 1180px; margin: 0 auto; }
.eyebrow { margin-bottom: 10px; color: var(--blue); font-size: 12px; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase; }
.section-title { margin: 0 0 12px; color: var(--text); font-size: 30px; font-weight: 700; line-height: 1.35; letter-spacing: -.8px; }
.section-desc { margin: 0 0 30px; color: var(--text-sub); font-size: 15px; line-height: 1.8; }
.inquiry-grid { display: grid; grid-template-columns: minmax(0,1.42fr) minmax(300px,.58fr); gap: 28px; align-items: start; }
.inquiry-card { padding: 34px; border: 1px solid var(--border); border-radius: 18px; background: #fff; box-shadow: 0 12px 30px rgba(15,23,42,.05); }
.inquiry-card h3 { margin: 0 0 12px; color: var(--text); font-size: 22px; font-weight: 700; line-height: 1.45; }
.inquiry-card p { margin: 0; color: var(--text-sub); font-size: 14px; line-height: 1.85; }
.inquiry-form { position: relative; }
.form-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 26px; padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.form-heading h3 { margin: 0; }
.form-heading p { color: #64748b; font-size: 12px; white-space: nowrap; }
.form-heading p span, .form-field em, .privacy-check em { color: #dc2626; font-style: normal; }
.form-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 20px; }
.form-field { display: grid; gap: 8px; color: #334155; font-size: 13px; font-weight: 700; }
.form-field-wide { grid-column: 1 / -1; }
.form-field input, .form-field select, .form-field textarea {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  font: inherit;
  font-size: 14px;
  font-weight: 400;
  outline: none;
  transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
}
.form-field input, .form-field select { height: 46px; padding: 0 13px; }
.form-field select { appearance: none; padding-right: 40px; background-image: linear-gradient(45deg,transparent 50%,#64748b 50%),linear-gradient(135deg,#64748b 50%,transparent 50%); background-position: calc(100% - 19px) 19px,calc(100% - 14px) 19px; background-size: 5px 5px,5px 5px; background-repeat: no-repeat; }
.form-field textarea { min-height: 170px; padding: 13px; line-height: 1.7; resize: vertical; }
.form-field input::placeholder, .form-field textarea::placeholder { color: #94a3b8; }
.form-field input:hover, .form-field select:hover, .form-field textarea:hover { border-color: #94a3b8; }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(26,86,219,.12); }
.form-field small { justify-self: end; margin-top: -3px; color: #94a3b8; font-size: 11px; font-weight: 400; }
.form-field .phone-format-help { color: #64748b; }
.form-trap { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }
.privacy-check { display: flex; align-items: flex-start; gap: 10px; margin-top: 22px; color: #475569; font-size: 13px; line-height: 1.65; cursor: pointer; }
.privacy-check input { flex: 0 0 auto; width: 17px; height: 17px; margin: 2px 0 0; accent-color: var(--blue); }
.privacy-check a { color: var(--blue); font-weight: 700; text-underline-offset: 3px; }
.privacy-summary {
  display: grid;
  gap: 8px;
  margin: 12px 0 0;
  padding: 16px 18px;
  border: 1px solid #edf2f7;
  border-radius: 10px;
  background: #f8fafc;
  color: #64748b;
  font-size: 12px;
  line-height: 1.65;
}
.privacy-summary-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}
.privacy-summary dt,
.privacy-summary dd { margin: 0; }
.privacy-summary dt {
  color: #334155;
  font-weight: 700;
}
.privacy-summary-note {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 12px;
  margin-top: 3px;
  padding-top: 11px;
  border-top: 1px solid #e2e8f0;
}
.privacy-summary-note strong {
  color: var(--blue);
  font-weight: 700;
}
.form-submit { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-width: 138px; min-height: 46px; margin-top: 22px; padding: 0 22px; border: 0; border-radius: 10px; background: var(--blue); color: #fff; font: inherit; font-size: 14px; font-weight: 700; cursor: pointer; transition: background .18s ease, transform .18s ease; }
.form-submit:hover { background: var(--blue-dark); }
.form-submit:active { transform: translateY(1px); }
.form-submit:disabled { cursor: wait; opacity: .72; }
.submit-spinner { display: none; width: 15px; height: 15px; border: 2px solid rgba(255,255,255,.42); border-top-color: #fff; border-radius: 50%; animation: contact-spin .7s linear infinite; }
.form-submit.is-loading .submit-spinner { display: block; }
.form-status { display: none; margin-top: 16px; padding: 13px 15px; border-radius: 10px; font-size: 13px; font-weight: 600; line-height: 1.6; }
.form-status.is-success { display: block; border: 1px solid #bbf7d0; background: #f0fdf4; color: #166534; }
.form-status.is-error { display: block; border: 1px solid #fecaca; background: #fef2f2; color: #b91c1c; }
.contact-panel { position: sticky; top: 150px; }
.contact-panel > p { margin-bottom: 22px; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.contact-actions a { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 18px; border-radius: 9px; font-size: 14px; font-weight: 600; text-decoration: none; }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); }
.btn-secondary { border: 1px solid var(--border); color: var(--text); background: #fff; }
.btn-secondary:hover { border-color: #93c5fd; color: var(--blue); }
.contact-list { display: grid; gap: 16px; }
.contact-item { padding: 18px 20px; border-radius: 12px; background: var(--blue-light); }
.contact-item span { display: block; margin-bottom: 5px; color: #64748b; font-size: 12px; font-weight: 700; letter-spacing: .2px; }
.contact-item a, .contact-item strong { color: var(--text); font-size: 15px; font-weight: 600; line-height: 1.6; text-decoration: none; }
.phone-button { display: flex; align-items: center; justify-content: center; min-height: 44px; margin-top: 18px; border: 1px solid #bfdbfe; border-radius: 9px; background: #fff; color: var(--blue); font-size: 14px; font-weight: 700; text-decoration: none; }
.phone-button:hover { border-color: var(--blue); background: var(--blue-light); }
@keyframes contact-spin { to { transform: rotate(360deg); } }
.notice-card { overflow: hidden; border: 1px solid var(--border); border-radius: 16px; background: #fff; box-shadow: 0 12px 30px rgba(15,23,42,.04); }
.notice-head, .notice-row { display: grid; grid-template-columns: 100px minmax(0,1fr) 120px; gap: 20px; align-items: center; }
.notice-head { min-height: 48px; padding: 0 26px; background: #f8fafc; border-bottom: 1px solid var(--border); color: #64748b; font-size: 12px; font-weight: 700; }
.notice-head span:last-child, .notice-date { text-align: right; }
.notice-row { min-height: 66px; padding: 0 26px; }
.notice-row + .notice-row { border-top: 1px solid var(--border); }
.notice-label { color: var(--blue); font-size: 12px; font-weight: 700; }
.notice-title { color: var(--text); font-size: 15px; font-weight: 600; }
.notice-date { color: var(--text-muted); font-size: 12px; }

@media (max-width: 800px) {
  .support-header { padding: 52px 20px 43px; }
  .support-header h1 { font-size: 32px; }
  .support-section { padding: 54px 20px 64px; }
  .inquiry-grid { grid-template-columns: 1fr; }
  .contact-panel { position: static; }
  .notice-head { display: none; }
  .notice-row { grid-template-columns: 1fr; gap: 5px; min-height: 0; padding: 18px 20px; }
  .notice-date { text-align: left; }
}
@media (max-width: 520px) {
  .support-tabs { gap: 26px; }
  .section-title { font-size: 26px; }
  .inquiry-card { padding: 26px 22px; }
  .form-heading { display: block; }
  .form-heading p { margin-top: 7px; white-space: normal; }
  .form-grid { grid-template-columns: 1fr; gap: 17px; }
  .form-field-wide { grid-column: auto; }
  .privacy-summary { padding: 15px; }
  .privacy-summary-row,
  .privacy-summary-note { grid-template-columns: 64px minmax(0, 1fr); gap: 10px; }
  .form-submit { width: 100%; }
}