:root {
  --support-bg: linear-gradient(180deg, #eef4fb 0%, #f8fbff 46%, #f4f7fb 100%);
  --support-surface: rgba(255, 255, 255, 0.94);
  --support-surface-strong: #ffffff;
  --support-border: rgba(148, 163, 184, 0.24);
  --support-border-strong: rgba(37, 99, 235, 0.18);
  --support-shadow: 0 24px 48px rgba(15, 23, 42, 0.09);
  --support-text: #0f172a;
  --support-muted: #4b5563;
  --support-subtle: #64748b;
  --support-accent: #2563eb;
  --support-accent-soft: rgba(37, 99, 235, 0.1);
  --support-accent-strong: #1d4ed8;
  --support-warm: #0f2747;
  --support-radius-xl: 28px;
  --support-radius-lg: 20px;
  --support-radius-md: 16px;
  --support-font: "Noto Sans KR", "Pretendard", "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.support-guide-page {
  margin: 0;
  min-height: 100vh;
  background: var(--support-bg);
  color: var(--support-text);
  font-family: var(--support-font);
  line-height: 1.7;
}

.support-guide-page--member {
  --support-bg: linear-gradient(180deg, #eef2f7 0%, #f7fafc 42%, #eef3f8 100%);
}

.support-guide-page--member {
  display: flex;
  flex-direction: column;
}

.support-member-layout {
  flex: 1;
  background:
    radial-gradient(circle at 82% 8%, rgba(75, 156, 255, 0.12), transparent 28%),
    var(--support-bg);
}

.support-member-main {
  padding-top: 0;
}

.support-member-topline {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  margin: 0 0 24px;
  padding: 0;
}

.support-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid rgba(148, 163, 184, 0.16);
  backdrop-filter: blur(18px);
}

.support-brand {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  color: var(--support-warm);
  font-weight: 800;
  line-height: 1.1;
  text-decoration: none;
}

.support-brand strong {
  font-size: 1.12rem;
  letter-spacing: -0.04em;
}

.support-brand span {
  color: var(--support-accent);
  font-size: 0.78rem;
  letter-spacing: -0.02em;
}

.support-topbar-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

.support-language {
  display: inline-flex;
  align-items: center;
  padding: 4px;
  border: 1px solid rgba(148, 163, 184, 0.25);
  border-radius: 999px;
  background: rgba(241, 245, 249, 0.9);
}

.support-language-button,
.support-return-link,
.support-primary-button,
.support-secondary-button,
.support-print-button {
  min-height: 44px;
  border-radius: 999px;
  font: inherit;
}

.support-language-button {
  border: none;
  background: transparent;
  color: var(--support-subtle);
  min-width: 52px;
  padding: 0 16px;
  font-size: 0.92rem;
  font-weight: 800;
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease;
}

.support-language-button.is-active {
  background: var(--support-accent);
  color: #ffffff;
}

.support-return-link,
.support-primary-button,
.support-secondary-button,
.support-print-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border: 1px solid transparent;
  font-size: 0.94rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.support-return-link,
.support-secondary-button {
  background: rgba(255, 255, 255, 0.92);
  color: var(--support-warm);
  border-color: rgba(148, 163, 184, 0.24);
}

.support-primary-button,
.support-print-button {
  background: linear-gradient(135deg, var(--support-accent) 0%, var(--support-accent-strong) 100%);
  color: #ffffff;
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.2);
}

.support-return-link:hover,
.support-primary-button:hover,
.support-secondary-button:hover,
.support-print-button:hover {
  transform: translateY(-1px);
}

.support-return-banner {
  display: grid;
  gap: 14px;
  align-items: center;
  margin-bottom: 18px;
  padding: 18px 20px;
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(235, 245, 255, 0.98) 0%, rgba(220, 236, 255, 0.94) 100%);
  box-shadow: 0 20px 34px rgba(37, 99, 235, 0.09);
}

.support-return-caption {
  margin: 0;
  color: var(--support-warm);
  font-size: 0.96rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.support-return-link--inline {
  width: min(100%, 360px);
  min-height: 56px;
  justify-content: flex-start;
  gap: 12px;
  padding: 0 22px;
  margin-bottom: 0;
  border: 1px solid rgba(18, 78, 183, 0.22);
  background: linear-gradient(135deg, var(--support-accent) 0%, var(--support-accent-strong) 100%);
  color: #ffffff;
  box-shadow: 0 16px 30px rgba(37, 99, 235, 0.22);
}

.support-return-link--inline:hover,
.support-return-link--inline:focus-visible {
  color: #ffffff;
  border-color: rgba(18, 78, 183, 0.24);
  background: linear-gradient(135deg, #1f5ce0 0%, #1d4ed8 100%);
}

.support-return-link-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  font-size: 1rem;
  line-height: 1;
  flex: 0 0 auto;
}

.support-return-link-copy {
  display: grid;
  gap: 2px;
}

.support-return-link-label {
  font-size: 1.02rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.support-return-link-hint {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.82rem;
  line-height: 1.2;
}

.support-main,
.support-member-shell {
  width: min(100%, 1100px);
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.support-member-shell {
  width: min(100%, 210mm);
}

.support-guide-page--member .support-member-shell {
  padding-top: 0;
}

.support-hero,
.support-member-intro {
  margin-bottom: 24px;
  padding: 34px 36px;
  border: 1px solid var(--support-border);
  border-radius: var(--support-radius-xl);
  background: linear-gradient(155deg, rgba(255, 255, 255, 0.98) 0%, rgba(242, 248, 255, 0.92) 100%);
  box-shadow: var(--support-shadow);
}

.support-member-intro {
  max-width: min(100%, 210mm);
  margin-inline: auto;
}

.support-guide-page--member .support-member-intro {
  max-width: min(100%, 210mm);
  border-color: rgba(203, 213, 225, 0.78);
  background:
    radial-gradient(circle at 84% 18%, rgba(75, 156, 255, 0.1), transparent 32%),
    linear-gradient(155deg, rgba(255, 255, 255, 0.98) 0%, rgba(242, 248, 255, 0.92) 100%);
}

.support-mode-badge {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 14px;
  border-radius: 999px;
  background: var(--support-accent-soft);
  color: var(--support-accent-strong);
  font-size: 0.82rem;
  font-weight: 800;
}

.support-role-eyebrow {
  margin: 16px 0 8px;
  color: var(--support-accent-strong);
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.support-title {
  margin: 0;
  color: var(--support-warm);
  font-size: clamp(1.92rem, 4vw, 3rem);
  line-height: 1.18;
  letter-spacing: -0.05em;
}

.support-lead {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--support-muted);
  font-size: 1.04rem;
}

.support-document {
  border: 1px solid var(--support-border);
  border-radius: var(--support-radius-xl);
  background: var(--support-surface);
  box-shadow: var(--support-shadow);
}

.support-document--public {
  padding: 28px;
}

.support-document--member {
  width: min(100%, 210mm);
  min-height: 297mm;
  margin: 0 auto;
  padding: 22mm 18mm 18mm;
  background: var(--support-surface-strong);
  border-color: rgba(15, 23, 42, 0.08);
}

.support-guide-page--member .support-document--member {
  box-shadow: 0 24px 56px rgba(15, 23, 42, 0.12);
}

.support-document-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.support-doc-code,
.support-role-label {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(241, 245, 249, 0.96);
  color: var(--support-subtle);
  font-size: 0.84rem;
  font-weight: 700;
}

.support-summary-panel {
  padding: 22px 24px;
  border: 1px solid var(--support-border-strong);
  border-radius: var(--support-radius-lg);
  background: linear-gradient(180deg, rgba(250, 252, 255, 0.98) 0%, rgba(241, 247, 255, 0.92) 100%);
}

.support-summary-panel h2 {
  margin: 0 0 10px;
  color: var(--support-warm);
  font-size: 1.22rem;
  line-height: 1.45;
}

.support-summary-panel p {
  margin: 0;
  color: var(--support-muted);
  font-size: 0.98rem;
}

.support-sections {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

.support-section {
  padding: 20px 22px;
  border: 1px solid rgba(226, 232, 240, 0.96);
  border-radius: var(--support-radius-md);
  background: rgba(255, 255, 255, 0.92);
}

.support-document--member .support-section {
  background: rgba(250, 252, 255, 0.94);
}

.support-section-title {
  margin: 0 0 8px;
  color: var(--support-text);
  font-size: 1rem;
  line-height: 1.45;
}

.support-section-body {
  margin: 0;
  color: var(--support-muted);
  font-size: 0.97rem;
}

.support-note-card {
  margin-top: 20px;
  padding: 18px 20px;
  border-radius: var(--support-radius-md);
  background: rgba(15, 39, 71, 0.05);
  border: 1px solid rgba(15, 39, 71, 0.08);
}

.support-note-title {
  display: block;
  margin-bottom: 6px;
  color: var(--support-warm);
  font-size: 0.92rem;
  font-weight: 800;
}

.support-note-body {
  margin: 0;
  color: var(--support-muted);
  font-size: 0.94rem;
}

.support-public-actions {
  display: grid;
  gap: 18px;
  align-items: center;
  grid-template-columns: minmax(0, 1fr) auto;
  margin-top: 24px;
  padding: 26px 28px;
  border: 1px solid rgba(37, 99, 235, 0.14);
  border-radius: var(--support-radius-xl);
  background: linear-gradient(150deg, rgba(15, 39, 71, 0.98) 0%, rgba(37, 99, 235, 0.9) 100%);
  box-shadow: 0 24px 40px rgba(15, 23, 42, 0.12);
}

.support-public-copy h2 {
  margin: 0 0 8px;
  color: #ffffff;
  font-size: 1.22rem;
  line-height: 1.4;
}

.support-public-copy p {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
}

.support-public-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.support-public-buttons .support-secondary-button {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.28);
}

.support-company-block {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid rgba(226, 232, 240, 0.96);
}

.support-company-block h2 {
  margin: 0 0 10px;
  color: var(--support-warm);
  font-size: 0.96rem;
}

.support-company-meta p {
  margin: 0 0 4px;
  color: var(--support-subtle);
  font-size: 0.84rem;
}

@media (max-width: 900px) {
  .support-topbar {
    padding: 16px;
    align-items: flex-start;
    flex-direction: column;
  }

  .support-topbar-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .support-main,
  .support-member-shell {
    padding: 28px 16px 64px;
  }

  .support-member-layout {
    padding-top: calc(var(--header-height-mobile, 56px) + 50px);
  }

  .support-member-topline {
    position: static;
    width: calc(100% - 32px);
    flex-direction: column;
    align-items: stretch;
    padding-top: 16px;
  }

  .support-hero,
  .support-member-intro {
    padding: 26px 20px;
  }

  .support-document--public {
    padding: 20px 18px;
  }

  .support-document--member {
    width: 100%;
    min-height: auto;
    padding: 28px 18px 24px;
  }

  .support-public-actions {
    grid-template-columns: 1fr;
    padding: 22px 20px;
  }

  .support-return-banner {
    padding: 18px;
  }

  .support-public-buttons {
    justify-content: stretch;
  }

  .support-public-buttons .support-primary-button,
  .support-public-buttons .support-secondary-button,
  .support-return-link,
  .support-print-button {
    width: 100%;
  }

  .support-return-link--inline {
    width: 100%;
  }
}

@media print {
  @page {
    size: A4;
    margin: 14mm;
  }

  body.support-guide-page {
    background: #ffffff;
  }

  #globalHeaderContainer,
  #globalSidebarContainer,
  #desktopSidebarContainer,
  #globalFooterContainer,
  #subNavigationLayer,
  .support-member-topline,
  .support-topbar,
  .support-member-intro {
    display: none !important;
  }

  .support-member-layout {
    display: block;
    padding-top: 0;
    background: #ffffff;
  }

  .support-member-shell {
    width: 100%;
    margin: 0;
    padding: 0;
  }

  .support-document--member {
    width: 100%;
    min-height: auto;
    margin: 0;
    padding: 0;
    border: none;
    border-radius: 0;
    box-shadow: none;
  }

  .support-note-card,
  .support-company-block,
  .support-summary-panel,
  .support-section {
    break-inside: avoid;
  }
}