:root {
  --guide-ink: #263244;
  --guide-muted: #617083;
  --guide-line: #dfe8ef;
  --guide-paper: #ffffff;
  --guide-soft: #f4fbfa;
  --guide-teal: #237d76;
  --guide-mint: #bdeee8;
  --guide-coral: #ff9a8b;
  --guide-shadow: 0 18px 44px rgba(45, 70, 92, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--guide-ink);
  background: #fbfdff;
  font-family: Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  word-break: keep-all;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

.guide-skip {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 100;
  padding: 10px 14px;
  color: #fff;
  background: var(--guide-ink);
  border-radius: 8px;
}

.guide-skip:focus {
  top: 12px;
}

.guide-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid rgba(223, 232, 239, 0.9);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.guide-header-inner,
.guide-main,
.guide-footer-inner {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.guide-header-inner {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.guide-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 900;
  text-decoration: none;
}

.guide-brand img {
  width: 38px;
  height: 38px;
  object-fit: contain;
  border-radius: 8px;
}

.guide-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--guide-muted);
  font-size: 14px;
  font-weight: 750;
}

.guide-nav a,
.guide-breadcrumb a,
.guide-related a,
.guide-footer a {
  text-decoration: none;
}

.guide-nav a:hover,
.guide-nav a:focus-visible,
.guide-breadcrumb a:hover,
.guide-breadcrumb a:focus-visible,
.guide-related a:hover,
.guide-related a:focus-visible {
  color: var(--guide-teal);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.guide-main {
  padding: 32px 0 88px;
}

.guide-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
  color: var(--guide-muted);
  font-size: 14px;
}

.guide-breadcrumb span[aria-current="page"] {
  color: var(--guide-ink);
  font-weight: 800;
}

.guide-article {
  overflow: hidden;
  background: var(--guide-paper);
  border: 1px solid var(--guide-line);
  border-radius: 20px;
  box-shadow: var(--guide-shadow);
}

.guide-hero {
  padding: clamp(44px, 7vw, 78px) clamp(24px, 7vw, 88px) 48px;
  background:
    radial-gradient(circle at 92% 10%, rgba(189, 238, 232, 0.65), transparent 32%),
    linear-gradient(145deg, #ffffff, #f5fbff);
  border-bottom: 1px solid var(--guide-line);
}

.guide-eyebrow {
  margin: 0 0 14px;
  color: var(--guide-teal);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.guide-hero h1 {
  max-width: 880px;
  margin: 0;
  font-size: clamp(38px, 7vw, 68px);
  line-height: 1.13;
  letter-spacing: -0.045em;
}

.guide-lead {
  max-width: 780px;
  margin: 24px 0 0;
  color: var(--guide-muted);
  font-size: clamp(18px, 2.5vw, 22px);
  line-height: 1.72;
}

.guide-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 24px;
  color: var(--guide-muted);
  font-size: 14px;
}

.guide-hero-actions,
.guide-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.guide-button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  color: var(--guide-ink);
  background: var(--guide-mint);
  border: 1px solid #8edbd2;
  border-radius: 9px;
  font-weight: 900;
  text-decoration: none;
}

.guide-button.secondary {
  background: #fff;
  border-color: var(--guide-line);
}

.guide-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 56px;
  padding: 52px clamp(24px, 7vw, 88px) 70px;
}

.guide-content {
  min-width: 0;
}

.guide-content section {
  scroll-margin-top: 92px;
  margin-top: 60px;
}

.guide-content section:first-child {
  margin-top: 0;
}

.guide-content h2 {
  margin: 0 0 20px;
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.3;
  letter-spacing: -0.035em;
}

.guide-content h3 {
  margin: 34px 0 12px;
  font-size: 22px;
  line-height: 1.4;
  letter-spacing: -0.02em;
}

.guide-content p,
.guide-content li,
.guide-note p,
.guide-faq p {
  color: var(--guide-muted);
  font-size: 17px;
  line-height: 1.82;
}

.guide-content strong {
  color: var(--guide-ink);
}

.guide-content ul,
.guide-content ol {
  padding-left: 24px;
}

.guide-content li + li {
  margin-top: 9px;
}

.guide-toc {
  position: sticky;
  top: 94px;
  align-self: start;
  padding: 20px;
  background: var(--guide-soft);
  border: 1px solid var(--guide-line);
  border-radius: 12px;
}

.guide-toc strong {
  display: block;
  margin-bottom: 12px;
}

.guide-toc ol {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 20px;
  color: var(--guide-muted);
  font-size: 14px;
  line-height: 1.5;
}

.guide-toc a {
  text-decoration: none;
}

.guide-toc a:hover,
.guide-toc a:focus-visible {
  color: var(--guide-teal);
  text-decoration: underline;
}

.guide-steps,
.guide-grid,
.guide-related-grid {
  display: grid;
  gap: 14px;
}

.guide-steps {
  counter-reset: guide-step;
}

.guide-step,
.guide-card {
  padding: 22px;
  background: #fff;
  border: 1px solid var(--guide-line);
  border-radius: 12px;
}

.guide-step {
  counter-increment: guide-step;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
}

.guide-step::before {
  content: counter(guide-step);
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: #164e49;
  background: var(--guide-mint);
  border-radius: 50%;
  font-weight: 900;
}

.guide-step h3,
.guide-card h3 {
  margin-top: 2px;
}

.guide-step p,
.guide-card p {
  margin-bottom: 0;
}

.guide-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.guide-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--guide-line);
  border-radius: 12px;
}

.guide-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  background: #fff;
}

.guide-table th,
.guide-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--guide-line);
  font-size: 15px;
  line-height: 1.65;
}

.guide-table th {
  color: var(--guide-ink);
  background: var(--guide-soft);
}

.guide-table td {
  color: var(--guide-muted);
}

.guide-table tr:last-child td {
  border-bottom: 0;
}

.guide-note {
  margin: 28px 0;
  padding: 22px 24px;
  background: #fff8f5;
  border-left: 4px solid var(--guide-coral);
  border-radius: 8px;
}

.guide-note strong {
  display: block;
  margin-bottom: 8px;
}

.guide-checklist {
  list-style: none;
  padding-left: 0 !important;
}

.guide-checklist li {
  position: relative;
  padding: 12px 14px 12px 44px;
  background: var(--guide-soft);
  border-radius: 8px;
}

.guide-checklist li::before {
  content: "✓";
  position: absolute;
  top: 12px;
  left: 16px;
  color: var(--guide-teal);
  font-weight: 900;
}

.guide-faq details {
  padding: 18px 0;
  border-top: 1px solid var(--guide-line);
}

.guide-faq details:last-child {
  border-bottom: 1px solid var(--guide-line);
}

.guide-faq summary {
  cursor: pointer;
  color: var(--guide-ink);
  font-size: 18px;
  font-weight: 850;
  line-height: 1.5;
}

.guide-faq p {
  margin: 12px 0 0;
}

.guide-cta {
  margin-top: 62px;
  padding: clamp(26px, 5vw, 44px);
  color: var(--guide-ink);
  background: linear-gradient(135deg, #dcf8ed, #e8f7ff);
  border: 1px solid #b7e6e0;
  border-radius: 16px;
}

.guide-cta h2 {
  margin-bottom: 12px;
}

.guide-related {
  padding: 46px clamp(24px, 7vw, 88px) 58px;
  background: #f7fbfd;
  border-top: 1px solid var(--guide-line);
}

.guide-related h2 {
  margin: 0 0 22px;
  font-size: 28px;
}

.guide-related-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.guide-related a {
  display: grid;
  gap: 8px;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--guide-line);
  border-radius: 10px;
}

.guide-related a strong {
  font-size: 18px;
}

.guide-related a span {
  color: var(--guide-muted);
  font-size: 14px;
  line-height: 1.55;
}

.guide-footer {
  padding: 38px 0;
  color: var(--guide-muted);
  background: #edf6f8;
  border-top: 1px solid var(--guide-line);
}

.guide-footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 28px;
}

.guide-footer p {
  max-width: 680px;
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
}

.guide-footer nav {
  display: flex;
  flex-wrap: wrap;
  align-content: start;
  justify-content: flex-end;
  gap: 14px;
  font-size: 14px;
}

@media (max-width: 860px) {
  .guide-nav a:not(.guide-nav-primary) {
    display: none;
  }

  .guide-layout {
    grid-template-columns: 1fr;
  }

  .guide-toc {
    position: static;
    grid-row: 1;
  }

  .guide-related-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .guide-header-inner,
  .guide-main,
  .guide-footer-inner {
    width: min(100% - 28px, 1120px);
  }

  .guide-header-inner {
    min-height: 62px;
  }

  .guide-nav {
    gap: 8px;
  }

  .guide-nav-primary {
    padding: 8px 10px;
    background: var(--guide-mint);
    border-radius: 7px;
  }

  .guide-main {
    padding-top: 20px;
  }

  .guide-article {
    border-radius: 14px;
  }

  .guide-hero,
  .guide-layout,
  .guide-related {
    padding-left: 20px;
    padding-right: 20px;
  }

  .guide-layout {
    gap: 30px;
  }

  .guide-grid {
    grid-template-columns: 1fr;
  }

  .guide-step {
    grid-template-columns: 36px minmax(0, 1fr);
  }

  .guide-step::before {
    width: 36px;
    height: 36px;
  }

  .guide-button {
    width: 100%;
  }

  .guide-footer-inner {
    flex-direction: column;
  }

  .guide-footer nav {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}