/* Aquapin A: the toolkit uses the same paper, sage and teal as the shop home. */
:root {
  --ink: #153d3a;
  --muted: #60746e;
  --teal: #127368;
  --teal-hover: #0b5b53;
  --pale: #e5efe3;
  --border: #d9e3dc;
  --surface: #fff;
  --bg: #f8faf5;
  --blue: var(--teal);
  --navy: var(--ink);
  --mint: var(--teal);
  font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: #edf1eb;
  font-synthesis: none;
}
* { box-sizing: border-box; }
body { margin: 0; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; color: inherit; }
button, a, input, select, summary { touch-action: manipulation; }
a { color: inherit; }
svg { vertical-align: middle; }
h1, h2, h3, p { margin-top: 0; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid #b87a24; outline-offset: 4px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; top: -100px; left: 18px; background: white; padding: 12px 18px; border-radius: 8px; z-index: 20; }
.skip-link:focus { top: 10px; }
.tools-header {
  min-height: 82px; max-width: 1200px; margin: 20px auto 0; padding: 16px 30px;
  display: flex; align-items: center; flex-wrap: wrap; gap: 18px 28px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px 16px 0 0;
}
.brand { text-decoration: none; display: flex; align-items: center; gap: 11px; font-size: 23px; font-weight: 800; letter-spacing: -.8px; line-height: 1.2; flex-shrink: 0; }
.brand small { display: block; margin-top: 5px; font-size: 10px; letter-spacing: 3px; font-weight: 600; color: var(--muted); }
.brand-icon { width: 40px; height: 45px; display: grid; place-items: center; color: var(--teal); flex-shrink: 0; }
.brand-icon svg { width: 34px; height: 34px; stroke-linecap: round; stroke-linejoin: round; }
.site-nav { display: flex; align-items: center; gap: 12px; font-size: 14px; }
.site-nav a { text-decoration: none; color: var(--muted); padding: 10px 15px; min-height: 44px; border-radius: 9px; white-space: nowrap; }
.site-nav a[aria-current] { color: var(--teal); background: var(--pale); font-weight: 700; }
.site-nav a:hover { color: var(--teal); background: var(--bg); }
.visitor-counter { display: flex; gap: 8px; margin-left: auto; white-space: nowrap; color: var(--muted); font-size: 12px; }
.visitor-counter strong { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }
.admin-controls { display: flex; gap: 12px; font-size: 13px; }
.admin-controls a { text-decoration: none; }
.tools-main { max-width: 1200px; margin: 0 auto; min-height: 60vh; padding: 40px 34px 44px; background: var(--bg); border: 1px solid var(--border); border-top: 0; border-radius: 0 0 16px 16px; }
.tools-heading { margin-bottom: 30px; }
.tools-eyebrow, .tool-category { display: block; margin-bottom: 10px; font-size: 11px; font-weight: 700; color: var(--teal); letter-spacing: .12em; }
.tools-heading h1 { margin: 0 0 12px; font-size: 36px; line-height: 1.35; letter-spacing: -1.5px; font-weight: 800; word-break: keep-all; overflow-wrap: anywhere; }
.tools-heading p { font-size: 15px; line-height: 1.8; color: var(--muted); margin-bottom: 0; }
.tools-hub-heading { padding: 4px 0 26px; margin-bottom: 28px; border-bottom: 1px solid var(--border); }
.tools-hero-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; margin-top: 22px; font-size: 12px; color: var(--muted); }
.tools-hero-meta > span { padding: 6px 10px; background: var(--pale); color: var(--teal); border-radius: 6px; }
.tools-hero-meta a { color: var(--teal); text-decoration: none; padding: 6px 0; }
.tools-section-heading { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 18px; }
.tools-section-heading h2 { font-size: 21px; line-height: 1.5; letter-spacing: -.6px; margin: 0; }
.tools-section-heading > span { font-size: 12px; color: var(--muted); white-space: nowrap; }
.tools-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
.tool-card { display: flex; flex-direction: column; padding: 24px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; text-decoration: none; min-width: 0; box-shadow: 0 3px 15px #173e3905; transition: border-color .15s, box-shadow .15s; }
.tool-card:hover { border-color: var(--teal); box-shadow: 0 5px 20px #153d3a0d; }
.tool-card-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 22px; }
.tool-card-category { font-size: 11px; color: var(--muted); }
.tool-icon { height: 48px; width: 48px; flex-shrink: 0; border-radius: 12px; background: var(--pale); color: var(--teal); display: grid; place-items: center; }
.tool-icon svg { height: 27px; width: 27px; }
.tool-card h2 { font-size: 20px; line-height: 1.5; letter-spacing: -.6px; margin-bottom: 9px; word-break: keep-all; overflow-wrap: anywhere; }
.tool-card p { font-size: 14px; line-height: 1.8; color: var(--muted); margin-bottom: 24px; word-break: keep-all; overflow-wrap: anywhere; }
.tool-card-open { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding-top: 15px; border-top: 1px solid #edf1e9; font-size: 12px; color: var(--teal); margin-top: auto; font-weight: 600; }
.tool-card-open > span { font-size: 18px; line-height: 1; }
.hub-help { margin-top: 36px; padding: 28px; background: var(--pale); border: 1px solid var(--border); border-radius: 12px; scroll-margin-top: 24px; }
.hub-help h2 { font-size: 22px; letter-spacing: -.6px; }
.hub-help > div { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.hub-help p { font-size: 14px; line-height: 1.9; color: var(--muted); }
.hub-help strong { display: block; color: var(--ink); margin-bottom: 7px; font-size: 16px; }
.hub-help .hub-note { font-size: 12px; margin: 8px 0 0; border-top: 1px solid #cfddcd; padding-top: 17px; }
.tools-footer { max-width: 1200px; margin: auto; padding: 24px 34px 32px; display: flex; gap: 14px 24px; flex-wrap: wrap; font-size: 12px; color: var(--muted); }
.tools-footer a { text-decoration: none; color: var(--teal); }
.tools-footer span { margin-left: auto; }
.tools-breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 7px 11px; margin: -12px 0 24px; font-size: 12px; color: var(--muted); }
.tools-breadcrumb a { color: var(--teal); text-decoration: none; padding: 6px 0; }
.tools-breadcrumb [aria-current] { overflow-wrap: anywhere; }
.tool-heading { display: flex; align-items: flex-start; gap: 20px; }
.tool-title-icon { display: grid; place-items: center; flex-shrink: 0; width: 64px; height: 64px; border-radius: 16px; color: var(--teal); background: var(--pale); }
.tool-title-icon svg { width: 35px; height: 35px; }
.tool-heading-copy { flex: 1; min-width: 0; }
.tool-heading h1 { font-size: clamp(25px, 2.7vw, 32px); letter-spacing: -1px; margin-bottom: 10px; }
.tool-category { letter-spacing: 0; margin-bottom: 7px; font-size: 12px; }
.guide-jump { display: flex; align-items: center; gap: 18px; flex-shrink: 0; padding: 10px 14px; border: 1px solid var(--border); border-radius: 9px; background: white; color: var(--teal); text-decoration: none; font-size: 13px; min-height: 44px; }
.guide-jump:hover { border-color: var(--teal); }
.tool-loading { font-size: 14px; color: var(--muted); }
.tool-loading button { margin-left: 10px; min-height: 44px; padding: 6px 12px; background: white; color: var(--teal); border: 1px solid var(--border); border-radius: 8px; }
.tool-noscript { padding: 18px; background: var(--pale); border-radius: 12px; }
.tool-guide { max-width: 880px; margin: 40px auto 0; background: white; border: 1px solid var(--border); border-radius: 12px; padding: 36px 40px; line-height: 1.95; scroll-margin-top: 24px; }
.tool-guide h2 { font-size: 25px; line-height: 1.5; margin: 9px 0 18px; letter-spacing: -.7px; }
.tool-guide h3 { font-size: 19px; line-height: 1.5; margin: 0 0 14px; letter-spacing: -.3px; }
.tool-guide p, .tool-guide li, .tool-guide dd { font-size: 15px; color: var(--muted); word-break: keep-all; overflow-wrap: anywhere; }
.tool-guide section { padding-top: 28px; margin-top: 24px; border-top: 1px solid var(--border); scroll-margin-top: 24px; }
.tool-guide ol, .tool-guide ul { padding-left: 24px; margin-bottom: 0; }
.tool-guide li { padding-left: 5px; margin: 12px 0; }
.guide-kicker { font-size: 12px; color: var(--teal); }
.guide-toc { display: flex; flex-wrap: wrap; gap: 4px 18px; padding: 12px 18px; border-radius: 9px; background: var(--pale); }
.guide-toc a { color: var(--teal); font-size: 13px; text-decoration: none; padding: 7px 0; }
.guide-definitions { margin: 0; }
.guide-definitions > div { margin: 18px 0; }
.guide-definitions dt { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.guide-definitions dd { margin: 0; }
.guide-table { margin: 20px 0 28px; border: 1px solid var(--border); border-radius: 9px; overflow: hidden; }
.guide-table table { width: 100%; border-collapse: collapse; font-size: 14px; text-align: left; line-height: 1.8; table-layout: fixed; }
.guide-table caption { text-align: left; background: var(--bg); padding: 12px 16px; color: var(--muted); font-size: 13px; }
.guide-table th, .guide-table td { padding: 12px 16px; vertical-align: top; overflow-wrap: anywhere; border-top: 1px solid var(--border); }
.guide-table th { font-weight: 500; }
.guide-table th:first-child { width: 34%; }
.guide-table thead th { background: var(--bg); }
.tool-guide details { border-bottom: 1px solid var(--border); padding: 12px 0; }
.tool-guide summary { cursor: pointer; font-size: 15px; font-weight: 600; padding: 7px 2px; line-height: 1.8; }
.tool-guide details p { margin: 12px 0 5px; padding-left: 5px; }
.tool-guide .guide-editorial { font-size: 13px; margin-top: 28px; color: var(--muted); }
.guide-top { font-size: 14px; color: var(--teal); text-underline-offset: 4px; }
.related-tools { margin-top: 40px; }
.related-tools > h2 { font-size: 21px; margin-bottom: 18px; letter-spacing: -.5px; }
.tool-ad { text-align: center; margin: 30px auto; min-height: 84px; padding: 12px 0; max-width: none; }
.tool-ad > span { display: block; font-size: 12px; color: var(--muted); margin-bottom: 8px; }
.tool-ad > div { width: 320px; height: 100px; margin: auto; }
@media (max-width: 950px) {
  .tools-header { margin-top: 0; padding-inline: 22px; border-radius: 0; gap: 16px; }
  .tools-main { border-radius: 0; border-inline: 0; }
  .tools-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .tools-footer span { width: 100%; margin: 0; }
  .guide-jump { align-self: center; }
}
@media (max-width: 780px) {
  .tools-main { padding: 30px 24px 36px; }
  .tool-heading { flex-wrap: wrap; gap: 14px; }
  .guide-jump { margin-left: 78px; }
  .tool-guide { padding: 28px; }
  .hub-help > div { grid-template-columns: 1fr; gap: 0; }
}
@media (max-width: 600px) {
  .tools-header { min-height: 76px; padding: 14px 18px 10px; gap: 8px 18px; }
  .brand { font-size: 20px; gap: 5px; }
  .brand small { font-size: 8px; letter-spacing: 2.5px; }
  .brand-icon { width: 32px; height: 38px; }
  .brand-icon svg { width: 29px; height: 29px; }
  .site-nav { order: 3; width: 100%; gap: 10px; }
  .site-nav a { flex: 1; text-align: center; font-size: 13px; padding: 9px 8px; }
  .visitor-counter { font-size: 11px; gap: 5px; }
  .admin-controls { order: 4; width: 100%; justify-content: center; }
  .tools-main { padding: 26px 20px 32px; }
  .tools-heading h1 { font-size: 29px; letter-spacing: -1.2px; }
  .tools-heading p { font-size: 14px; }
  .tools-hub-heading { padding-top: 0; margin-bottom: 24px; }
  .tools-hero-meta { gap: 9px 14px; margin-top: 18px; }
  .tools-section-heading h2, .related-tools > h2 { font-size: 19px; }
  .tools-grid { grid-template-columns: 1fr; gap: 16px; }
  .tool-card { padding: 22px; }
  .tool-card-top { margin-bottom: 18px; }
  .tool-card p { margin-bottom: 20px; }
  .hub-help { padding: 22px; margin-top: 28px; }
  .hub-help h2 { font-size: 20px; }
  .tools-breadcrumb { margin: -8px 0 22px; font-size: 11px; }
  .tool-title-icon { width: 48px; height: 48px; border-radius: 12px; }
  .tool-title-icon svg { width: 28px; height: 28px; }
  .tool-heading { gap: 14px 12px; }
  .tool-heading h1 { font-size: 25px; line-height: 1.45; }
  .guide-jump { margin-left: 60px; }
  .tool-guide { padding: 24px 19px; margin-top: 28px; }
  .tool-guide h2 { font-size: 22px; }
  .tool-guide p, .tool-guide li, .tool-guide dd { word-break: normal; }
  .guide-table th, .guide-table td { padding: 10px; font-size: 13px; }
  .guide-toc { gap: 4px 14px; padding: 11px 14px; }
  .tools-footer { padding: 24px 20px 30px; gap: 12px 18px; }
  .related-tools { margin-top: 30px; }
}
@media (max-width: 359px) {
  .tools-main { padding-inline: 12px; }
  .tools-header { padding-inline: 12px; }
  .visitor-counter { flex-wrap: wrap; justify-content: flex-end; max-width: 120px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}

@media(min-width:761px){.tool-ad > div{width:728px;height:90px}}