/* TechZip article CSS.
   Safe scope: every style is limited to .tz-article. */

.tz-article {
  --tz-text: #17201d;
  --tz-muted: #68726e;
  --tz-line: #d6ddd8;
  --tz-accent: #14b8a6;
  --tz-accent-deep: #0f766e;
  --tz-guide: #64748b;
  --tz-card: #ffffff;
  --tz-soft: #f3f7f6;
  --tz-mint: #dff7ef;
  --tz-warm: #fff8e8;
  --tz-shadow: 0 18px 50px rgba(15, 23, 42, 0.12);
  box-sizing: border-box;
  max-width: 860px;
  margin: 0 auto 32px;
  padding: 34px 42px 48px;
  border: 1px solid var(--tz-line);
  border-radius: 8px;
  background: var(--tz-card);
  box-shadow: var(--tz-shadow);
  color: var(--tz-text);
  font: 17px/1.72 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", Arial, sans-serif;
  overflow: hidden;
}

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

.tz-article > *:first-child {
  margin-top: 0;
}

.tz-article p {
  margin: 0 0 17px;
}

.tz-article a {
  color: var(--tz-accent-deep);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.tz-article strong {
  color: #151b18;
}

.tz-article code {
  border: 1px solid #e1ddd5;
  border-radius: 5px;
  background: #f7f4ef;
  color: #7c2d12;
  padding: 1px 5px;
  font-size: 0.9em;
}

.tz-article .lead {
  margin-bottom: 20px;
  color: #35413b;
  font-size: 20px;
  line-height: 1.75;
}

.tz-article .toc-box,
.tz-article .summary-box,
.tz-article .source-box {
  border-radius: 8px;
  margin: 24px 0;
  padding: 18px 20px;
}

.tz-article .toc-box {
  border: 1px solid var(--tz-line);
  background: #fffdf8;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.7);
}

.tz-article .toc-box strong {
  display: block;
  margin-bottom: 10px;
  color: var(--tz-accent-deep);
  font-size: 15px;
}

.tz-article .toc-box ol {
  margin: 0;
  padding-left: 20px;
}

.tz-article .toc-box li + li {
  margin-top: 6px;
}

.tz-article .summary-box {
  border: 1px solid #b7dcd4;
  background: var(--tz-mint);
  color: #26352f;
}

.tz-article .source-box {
  border: 1px solid #e1c98f;
  background: var(--tz-warm);
  color: #3d3526;
}

.tz-article h2 {
  margin: 44px 0 16px;
  padding-top: 20px;
  border-top: 1px solid var(--tz-line);
  color: var(--tz-text);
  font: 800 26px/1.38 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", Arial, sans-serif;
  letter-spacing: 0;
  scroll-margin-top: 96px;
}

.tz-article h2::before {
  content: "";
  display: block;
  width: 42px;
  height: 3px;
  margin-bottom: 14px;
  border-radius: 999px;
  background: var(--tz-accent);
}

.tz-article h3 {
  margin: 26px 0 11px;
  padding-left: 12px;
  border-left: 3px solid var(--tz-guide);
  color: #2d3833;
  font: 750 20px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", Arial, sans-serif;
}

.tz-article ul,
.tz-article ol {
  padding-left: 24px;
}

.tz-article li + li {
  margin-top: 6px;
}

.tz-article blockquote {
  margin: 24px 0;
  padding: 16px 18px;
  border-left: 4px solid var(--tz-accent);
  border-radius: 0 8px 8px 0;
  background: #f5fbf9;
  color: #34443e;
  font: inherit;
  text-align: left;
}

.tz-article blockquote p:last-child {
  margin-bottom: 0;
}

.tz-article table {
  width: 100%;
  margin: 24px 0 26px;
  border: 1px solid var(--tz-line);
  border-collapse: separate;
  border-spacing: 0;
  border-radius: 8px;
  overflow: hidden;
  background: var(--tz-card);
  font-size: 15px;
  line-height: 1.6;
}

.tz-article th {
  border: 0;
  background: #104c43;
  color: #ffffff;
  padding: 12px 14px;
  text-align: left;
  font-weight: 800;
}

.tz-article td {
  border: 0;
  border-top: 1px solid var(--tz-line);
  background: var(--tz-card);
  padding: 13px 14px;
  vertical-align: top;
}

.tz-article tr:nth-child(even) td {
  background: #f6faf8;
}

.tz-article .action-row {
  display: flex;
  justify-content: center;
  margin: 28px 0;
}

.tz-article .action-button {
  position: relative;
  width: min(100%, 420px);
  min-height: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(15, 118, 110, 0.25);
  border-radius: 999px;
  background: linear-gradient(135deg, #2dd4bf 0%, #14b8a6 52%, #22c55e 100%);
  color: #052e2b;
  padding: 12px 62px 12px 22px;
  box-shadow: 0 14px 26px rgba(20, 184, 166, 0.28);
  font-size: 17px;
  font-weight: 850;
  text-align: center;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.tz-article .action-button::after {
  content: ">";
  position: absolute;
  right: 13px;
  top: 50%;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(5, 46, 43, 0.16);
  color: #052e2b;
  transform: translateY(-50%);
  font-size: 18px;
  font-weight: 900;
}

.tz-article .action-button:hover {
  transform: translateY(-1px);
  background: linear-gradient(135deg, #5eead4 0%, #2dd4bf 52%, #34d399 100%);
  box-shadow: 0 18px 34px rgba(20, 184, 166, 0.34);
  color: #052e2b;
  text-decoration: none;
}

.tz-article .action-button:focus-visible {
  outline: 3px solid rgba(20, 184, 166, 0.35);
  outline-offset: 3px;
}

@media (min-width: 700px) {
  .tz-article .toc-box ol {
    columns: 2;
    column-gap: 28px;
  }

  .tz-article .toc-box li {
    break-inside: avoid;
  }
}

@media (max-width: 640px) {
  .tz-article {
    padding: 24px 20px 36px;
    font-size: 16px;
  }

  .tz-article .lead {
    font-size: 18px;
  }

  .tz-article h2 {
    font-size: 23px;
  }

  .tz-article h3 {
    font-size: 18px;
  }

  .tz-article table {
    display: block;
    overflow-x: auto;
    white-space: normal;
  }
}