@font-face {
  font-family: "Pretendard";
  font-style: normal;
  font-weight: 45 920;
  font-display: swap;
  src: url("/fonts/PretendardVariable.woff2") format("woff2");
}

:root {
  color-scheme: light;
  --accent-fill: #2549e8;
  --error: light-dark(#a32131, #ff9daa);
  --field-line: light-dark(#b9bec9, #697386);
  --warning: light-dark(#946326, #e4bb7a);
  --warning-line: light-dark(#c6ad82, #8b714c);
  --warning-paper: light-dark(#fcfaf5, #302b22);
  --added-paper: light-dark(#e8f5ec, #203b2b);
  --added-ink: light-dark(#20552d, #ade5bb);
  --removed-paper: light-dark(#fff0ed, #432a2c);
  --removed-ink: light-dark(#85352d, #ffb8af);
  --paper: light-dark(#fff, #16181d);
  --ink: light-dark(#252729, #edf0f5);
  --muted: light-dark(#686c73, #a9b0bd);
  --line: light-dark(#dddfe5, #373d49);
  --subtle: light-dark(#f5f6f8, #20242c);
  --accent: light-dark(#2549e8, #91a7ff);
  --accent-hover: #1939c8;
  --accent-light: light-dark(#edf0ff, #252f50);
  --font:
    "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Malgun Gothic", sans-serif;
  --mono: "SFMono-Regular", Consolas, monospace;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
button,
input {
  font: inherit;
}
button,
a,
input {
  -webkit-tap-highlight-color: transparent;
}
button {
  cursor: pointer;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  color: inherit;
}
button:disabled {
  cursor: default;
}
button,
input {
  border-radius: 0;
}
button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 5px;
}
::selection {
  background: var(--accent-fill);
  color: #fff;
}
h1,
h2,
h3,
p {
  margin: 0;
}
button {
  border: 0;
  background: none;
}
svg {
  display: block;
  flex-shrink: 0;
}
.icon {
  width: 22px;
  height: 22px;
}
main,
.header-inner,
.site-footer {
  width: min(1248px, calc(100% - 96px));
  margin-inline: auto;
}
main:focus {
  outline: none;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  top: -60px;
  left: 16px;
  padding: 12px 20px;
  background: var(--accent-fill);
  color: white;
  z-index: 10;
}
.skip-link:focus {
  top: 12px;
}
.site-header {
  border-bottom: 1px solid var(--line);
}
.header-inner {
  height: 96px;
  display: flex;
  align-items: center;
  gap: 64px;
}
.brand {
  display: flex;
  flex-shrink: 0;
  white-space: nowrap;
  align-items: center;
  min-height: 44px;
  line-height: 1;
}
.brand-korean,
.footer-wordmark {
  position: relative;
  display: inline-block;
  padding-bottom: 0.2em;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.12;
  white-space: nowrap;
}
.brand-korean::after,
.footer-wordmark::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0.94em;
  height: 0.1em;
  background: var(--accent);
}
.brand-korean {
  font-size: 38px;
}
.top-nav {
  display: flex;
  align-self: stretch;
  gap: 32px;
}
.top-link {
  display: flex;
  white-space: nowrap;
  align-items: center;
  gap: 9px;
  position: relative;
  font-size: 15px;
  font-weight: 600;
  color: var(--muted);
}
.top-link.is-active {
  color: var(--ink);
}
.top-link.is-active:after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--ink);
}
.top-link:hover {
  color: var(--accent);
}
.nav-count {
  font: 12px var(--mono);
  color: var(--accent);
  align-self: center;
  margin-top: -9px;
}
.header-note {
  margin-left: auto;
  font-size: 13px;
  color: var(--muted);
}
.intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  padding: 56px 0 48px;
  align-items: center;
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  font: 11px var(--mono);
  letter-spacing: 1.4px;
  font-weight: 600;
}
.eyebrow-line {
  width: 18px;
  height: 2px;
  background: var(--accent);
}
h1 {
  font-size: 48px;
  letter-spacing: -2.1px;
  line-height: 1.27;
  font-weight: 750;
}
.intro h1 {
  margin-top: 18px;
}
.title-accent {
  color: var(--accent);
}
.search-area {
  padding-top: 20px;
}
.search-area > p {
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 22px;
}
.search-form {
  height: 60px;
  border-bottom: 2px solid var(--ink);
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--subtle);
  padding: 0 12px 0 18px;
}
.search-form:focus-within {
  border-color: var(--accent);
  box-shadow: 0 2px 0 var(--accent);
}
.search-form > .icon {
  width: 21px;
  color: var(--muted);
}
.search-form input {
  border: 0;
  background: transparent;
  min-width: 0;
  width: 100%;
  height: 100%;
  font-size: 16px;
  outline: none;
}
.search-form input:focus-visible {
  outline: none;
}
.search-form input::placeholder {
  color: var(--muted);
}
.search-form kbd {
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  width: 25px;
  height: 25px;
  color: var(--muted);
  font: 12px var(--mono);
  flex-shrink: 0;
}
.search-submit {
  height: 40px;
  width: 40px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.search-submit:hover {
  color: var(--accent);
}
.search-suggestions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
}
.search-suggestions > span {
  margin-right: 2px;
  color: var(--muted);
}
.search-suggestions button {
  padding: 4px 0;
  min-height: 32px;
  color: var(--ink);
}
.search-suggestions button:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
  color: var(--accent);
}
.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 16px;
}
.section-heading h2 {
  font-size: 19px;
  letter-spacing: -0.5px;
  font-weight: 700;
}
.section-caption {
  font-size: 13px;
  color: var(--muted);
}
.featured-grid {
  display: grid;
  grid-template-columns: 1.24fr 1fr 1fr;
  border: 1px solid var(--line);
}
.featured {
  height: 260px;
  position: relative;
  overflow: hidden;
  padding: 22px 26px;
  display: flex;
  flex-direction: column;
  transition: background 0.18s ease;
}
.featured + .featured {
  border-left: 1px solid var(--line);
}
.featured:hover .feature-corner {
  transform: translate(2px, -2px);
}
.feature-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 1;
}
.feature-category {
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
}
.feature-corner {
  font-size: 26px;
  font-weight: 300;
  line-height: 1;
  transition: transform 0.18s ease;
}
.feature-bottom {
  margin-top: auto;
  position: relative;
  z-index: 1;
}
.feature-bottom h3 {
  font-size: 22px;
  letter-spacing: -0.7px;
  font-weight: 650;
}
.feature-bottom p {
  font-size: 14px;
  margin-top: 4px;
  color: var(--muted);
}
.featured-primary {
  background: var(--accent-fill);
  color: white;
}
.featured-primary:hover {
  background: var(--accent-hover);
}
.featured-primary .feature-category,
.featured-primary .feature-bottom p {
  color: #e0e5ff;
}
.feature-art {
  position: absolute;
  pointer-events: none;
}
.percentage-art {
  right: 36px;
  top: 19px;
  font:
    italic 172px Georgia,
    serif;
  line-height: 1;
  letter-spacing: -12px;
  transform: rotate(-12deg);
  color: #fff;
}
.feature-index {
  position: absolute;
  right: 20px;
  bottom: 20px;
  font: 10px var(--mono);
  letter-spacing: 1.8px;
  writing-mode: vertical-rl;
  opacity: 0.8;
}
.featured-text {
  background: var(--subtle);
}
.featured-text:hover,
.featured-date:hover {
  background: var(--accent-light);
}
.text-art {
  top: 56px;
  left: 28px;
  right: 28px;
  display: flex;
  align-items: center;
  gap: 5px;
  height: 104px;
}
.text-art > span:first-child {
  font-size: 90px;
  font-weight: 550;
  letter-spacing: -7px;
  line-height: 1;
}
.text-caret {
  height: 74px;
  width: 3px;
  background: var(--accent);
  margin-left: 8px;
}
.text-art-label {
  align-self: flex-end;
  font-size: 11px !important;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.6;
  position: absolute;
  bottom: 14px;
  right: 0;
  writing-mode: vertical-rl;
  color: var(--muted);
}
.date-art {
  top: 63px;
  left: 26px;
  font-family: var(--mono);
  font-size: 80px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -8px;
}
.date-art span {
  color: var(--accent);
}
.toolbox,
.related-tools {
  margin-top: 42px;
}
.toolbox {
  scroll-margin-top: 28px;
}
.toolbox-heading {
  border-bottom: 2px solid var(--ink);
  padding-bottom: 18px;
  margin-bottom: 0;
}
.heading-group {
  display: flex;
  align-items: center;
  gap: 12px;
}
.heading-group h2 {
  font-size: 25px;
}
.total-count {
  font: 13px var(--mono);
  color: var(--accent);
  margin-top: 2px;
}
.directory-layout {
  display: grid;
  grid-template-columns: 208px 1fr;
  gap: 40px;
  padding-top: 24px;
}
.category-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.category-button {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  padding: 0 13px;
  text-align: left;
  font-size: 15px;
  color: var(--muted);
  border-left: 2px solid transparent;
  transition: background 0.15s ease;
}
.category-button .icon {
  width: 19px;
  height: 19px;
}
.category-button:hover {
  background: var(--subtle);
  color: var(--ink);
}
.category-button.is-active {
  background: var(--accent-light);
  border-left-color: var(--accent);
  color: var(--accent);
  font-weight: 650;
}
.category-count {
  margin-left: auto;
  font: 11px var(--mono);
}
.directory-note {
  margin: 28px 14px 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.note-cross {
  font-size: 25px;
  font-weight: 300;
  line-height: 1;
  color: var(--accent);
}
.directory-note p {
  font-size: 14px;
  line-height: 1.65;
  margin-top: 12px;
  color: var(--muted);
}
.directory-note > span:last-child {
  display: block;
  font-size: 11px;
  color: var(--muted);
  margin-top: 12px;
}
.results-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 48px;
  padding: 0 0 18px;
  border-bottom: 1px solid var(--line);
}
.results-heading h3 {
  font-size: 15px;
  font-weight: 650;
}
.results-heading > span {
  font-size: 12px;
  color: var(--muted);
}
.tool-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 32px;
}
.tool-row {
  position: relative;
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 14px;
  border-bottom: 1px solid var(--line);
  padding: 23px 2px;
  min-height: 107px;
  transition:
    background 0.15s ease,
    color 0.15s ease;
}
.tool-row:hover {
  color: var(--accent);
  background: var(--subtle);
}
.tool-number {
  position: absolute;
  top: 12px;
  left: 2px;
  font: 9px var(--mono);
  color: var(--muted);
}
.tool-icon {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.tool-icon .icon {
  width: 23px;
  height: 23px;
}
.tool-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 5px;
  flex: 1;
}
.tool-name {
  font-size: 16px;
  font-weight: 650;
  letter-spacing: -0.4px;
}
.tool-status {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 6px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.5;
  vertical-align: middle;
  white-space: nowrap;
}
.tool-description {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.6;
  word-break: keep-all;
}
.tool-category {
  display: none;
}
.row-arrow {
  width: 17px;
  height: 17px;
  color: var(--muted);
  flex-shrink: 0;
  transition: transform 0.15s ease;
}
.tool-row:hover .row-arrow {
  color: var(--accent);
  transform: translateX(3px);
}
.directory-footnote {
  font-size: 12px;
  color: var(--muted);
  margin-top: 20px;
}
.empty-state {
  grid-column: 1/-1;
  text-align: center;
  padding: 60px 16px 68px;
}
.empty-state > .icon {
  margin: 0 auto 16px;
  width: 30px;
  height: 30px;
  color: var(--muted);
}
.empty-state h3 {
  font-size: 20px;
}
.empty-state p {
  font-size: 14px;
  color: var(--muted);
  margin: 10px 0 24px;
}
.outline-button,
.solid-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  min-height: 48px;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
}
.outline-button {
  border: 1px solid var(--line);
  background: var(--paper);
}
.outline-button:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.solid-button {
  background: var(--accent-fill);
  color: white;
}
.solid-button:hover {
  background: var(--accent-hover);
}
.solid-button .icon,
.outline-button .icon {
  width: 19px;
  height: 19px;
}
.site-footer {
  margin-top: 80px;
  border-top: 2px solid var(--ink);
}
.footer-top {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 30px 0;
}
.footer-wordmark {
  font-size: 30px;
  min-height: 44px;
}
.footer-top p {
  font-size: 13px;
  color: var(--muted);
}
.footer-top > a:last-child {
  font-size: 13px;
  margin-left: auto;
  display: flex;
  gap: 20px;
}
.footer-top > a:last-child:hover {
  color: var(--accent);
}
.footer-bottom {
  display: flex;
  gap: 28px;
  border-top: 1px solid var(--line);
  padding: 18px 0 28px;
  color: var(--muted);
  font-size: 11px;
}
.footer-bottom > span:first-child {
  font: 10px var(--mono);
  letter-spacing: 0.5px;
  align-self: center;
}
.back-top {
  margin-left: auto;
  display: flex;
  gap: 16px;
}
.back-top:hover {
  color: var(--accent);
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--muted);
  padding: 30px 0;
}
.breadcrumb a:hover {
  color: var(--accent);
  text-decoration: underline;
}
.breadcrumb [aria-current] {
  color: var(--ink);
}
.detail-heading {
  padding: 24px 0 32px;
  position: relative;
}
.detail-heading .eyebrow {
  color: var(--accent);
  font-family: var(--font);
  font-size: 14px;
  letter-spacing: 0;
}
.detail-heading h1 {
  font-size: 40px;
  margin-top: 12px;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
.detail-heading > p:last-child {
  margin-top: 12px;
  color: var(--muted);
}
.detail-icon {
  position: absolute;
  right: 0;
  top: 36px;
  width: 80px;
  height: 80px;
  background: var(--accent-light);
  display: grid;
  place-items: center;
  color: var(--accent);
}
.detail-icon .icon {
  width: 38px;
  height: 38px;
}
.coming-soon {
  border-top: 2px solid var(--ink);
  background: var(--subtle);
  text-align: center;
  padding: 60px 24px 64px;
}
.outline-label {
  display: inline-block;
  padding: 3px 10px;
  border: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}
.coming-soon h2 {
  font-size: 30px;
  letter-spacing: -1px;
  margin-top: 18px;
}
.coming-soon p {
  color: var(--muted);
  font-size: 16px;
  margin-top: 14px;
}
.coming-soon .solid-button {
  margin-top: 28px;
}
.related-tools .section-heading {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.related-tools .tool-row {
  padding-left: 4px;
}
.about-page {
  padding: 64px 0 0;
  max-width: 960px;
  margin: auto;
}
.about-page .eyebrow {
  color: var(--accent);
  margin-bottom: 24px;
}
.about-page h1 {
  word-break: keep-all;
  font-size: 60px;
}
.about-lead {
  font-size: 22px;
  line-height: 1.8;
  margin: 32px 0 20px;
  letter-spacing: -0.4px;
}
.about-page > p:not(.eyebrow):not(.about-lead) {
  color: var(--muted);
}
.about-principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 48px 0;
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--line);
}
.about-principles section {
  padding: 28px 20px 28px 0;
}
.about-principles section > span {
  font: 12px var(--mono);
  color: var(--accent);
}
.about-principles h2,
.about-principles h3 {
  font-size: 20px;
  margin-top: 12px;
}
.about-principles p {
  font-size: 14px;
  color: var(--muted);
  margin-top: 10px;
}
.about-note {
  max-width: 680px;
  margin-bottom: 32px;
}
.privacy-promise {
  margin: 48px 0 40px;
  border-top: 2px solid var(--ink);
  padding-top: 32px;
}
.privacy-promise h2 {
  font-size: clamp(26px, 4vw, 34px);
  line-height: 1.4;
  letter-spacing: -1px;
}
.privacy-promise > p:not(.eyebrow) {
  max-width: 680px;
  margin-top: 16px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}
.privacy-promise .eyebrow {
  font-family: var(--font);
  font-size: 13px;
  letter-spacing: 0;
  margin-bottom: 12px;
}
.privacy-promise .about-principles {
  margin: 28px 0 20px;
  border-top: 1px solid var(--line);
}
.privacy-promise > .privacy-status {
  font-size: 14px;
}
.about-note h2 {
  font-size: 18px;
}
.about-note p {
  color: var(--muted);
  font-size: 15px;
  margin-top: 10px;
}
.not-found {
  padding: 110px 0;
  text-align: center;
}
.not-found .eyebrow {
  justify-content: center;
  color: var(--accent);
}
.not-found h1 {
  font-size: 32px;
  margin: 20px 0 14px;
}
.not-found > p {
  color: var(--muted);
}
.not-found .solid-button {
  margin-top: 28px;
}
.noscript {
  margin: 24px;
  text-align: center;
}
@media (min-width: 1500px) {
  .intro {
    padding: 64px 0 56px;
  }
  .featured {
    height: 276px;
  }
  .percentage-art {
    top: 24px;
    font-size: 180px;
  }
  .text-art {
    top: 65px;
  }
  .date-art {
    top: 76px;
  }
}
@media (max-width: 1100px) {
  main,
  .header-inner,
  .site-footer {
    width: calc(100% - 64px);
  }
  .header-inner {
    gap: 48px;
  }
  .intro {
    gap: 40px;
  }
  .directory-layout {
    grid-template-columns: 176px 1fr;
    gap: 28px;
  }
  .tool-list {
    column-gap: 24px;
  }
  .tool-row {
    gap: 9px;
  }
  .tool-description {
    font-size: 12px;
  }
  .tool-name {
    font-size: 15px;
  }
  .featured {
    padding: 20px;
    height: 252px;
  }
  .percentage-art {
    font-size: 158px;
    right: 25px;
    top: 30px;
  }
  .feature-bottom h3 {
    font-size: 20px;
  }
  .text-art {
    left: 20px;
  }
  .date-art {
    left: 20px;
    font-size: 72px;
    top: 68px;
  }
  .header-note {
    font-size: 12px;
  }
  .feature-bottom p {
    font-size: 13px;
  }
}
@media (max-width: 850px) {
  .header-note {
    display: none;
  }
  .header-inner {
    height: 84px;
    justify-content: space-between;
  }
  .intro {
    gap: 28px;
    padding: 40px 0;
  }
  .intro h1 {
    font-size: 40px;
  }
  .search-area > p {
    font-size: 14px;
  }
  .search-form {
    height: 54px;
    padding-left: 12px;
    gap: 8px;
  }
  .search-form input {
    font-size: 14px;
  }
  .search-form kbd {
    display: none;
  }
  .search-suggestions {
    gap: 12px;
    font-size: 12px;
  }
  .search-suggestions > span {
    display: none;
  }
  .featured-grid {
    grid-template-columns: 1.05fr 1fr 1fr;
  }
  .featured {
    height: 232px;
    padding: 18px;
  }
  .feature-category {
    font-size: 11px;
  }
  .feature-bottom h3 {
    font-size: 18px;
  }
  .feature-bottom p {
    font-size: 12px;
  }
  .percentage-art {
    top: 46px;
    right: 28px;
    font-size: 124px;
  }
  .text-art {
    top: 62px;
    height: 76px;
    left: 18px;
  }
  .text-art > span:first-child {
    font-size: 74px;
  }
  .text-caret {
    height: 58px;
  }
  .text-art-label {
    display: none;
  }
  .date-art {
    font-size: 61px;
    top: 72px;
    left: 18px;
    letter-spacing: -6px;
  }
  .feature-index {
    display: none;
  }
  .directory-layout {
    grid-template-columns: 1fr;
    gap: 20px;
    padding-top: 16px;
  }
  .category-nav {
    flex-direction: row;
    gap: 4px;
    flex-wrap: wrap;
  }
  .category-button {
    border-left: 0;
    border-bottom: 2px solid transparent;
    gap: 8px;
    padding: 0 13px;
  }
  .category-button.is-active {
    border-bottom-color: var(--accent);
  }
  .category-button .icon {
    width: 17px;
    height: 17px;
  }
  .category-count {
    display: none;
  }
  .directory-note {
    display: none;
  }
  .tool-row {
    padding: 24px 4px;
    gap: 14px;
  }
  .tool-name {
    font-size: 16px;
  }
  .tool-description {
    font-size: 13px;
  }
  .site-footer {
    margin-top: 60px;
  }
}
@media (max-width: 600px) {
  main,
  .header-inner,
  .site-footer {
    width: calc(100% - 40px);
  }
  .header-inner {
    height: 76px;
    gap: 20px;
  }
  .brand-korean {
    font-size: 33px;
  }
  .top-nav {
    gap: 22px;
  }
  .top-link {
    font-size: 13px;
    gap: 5px;
  }
  .nav-count {
    font-size: 10px;
  }
  .intro {
    grid-template-columns: 1fr;
    gap: 26px;
    padding: 34px 0 32px;
  }
  .eyebrow {
    font-size: 10px;
    letter-spacing: 1.1px;
  }
  .intro h1 {
    font-size: 42px;
    line-height: 1.25;
    margin-top: 16px;
    letter-spacing: -1.8px;
  }
  .intro-copy {
    position: relative;
  }
  .search-area {
    padding: 0;
  }
  .search-area > p {
    font-size: 14px;
    line-height: 1.65;
    margin-bottom: 18px;
  }
  .search-area > p br {
    display: none;
  }
  .search-form {
    height: 56px;
  }
  .search-form input {
    font-size: 15px;
  }
  .search-suggestions {
    gap: 16px;
    margin-top: 9px;
  }
  .search-suggestions > span {
    display: inline;
    font-size: 11px;
  }
  .section-heading {
    margin-bottom: 13px;
  }
  .section-heading h2 {
    font-size: 17px;
  }
  .section-caption {
    font-size: 11px;
  }
  .featured-grid {
    grid-template-columns: 1fr 1fr;
  }
  .featured {
    height: 210px;
    padding: 18px;
  }
  .featured-primary {
    grid-column: 1/-1;
    height: 206px;
  }
  .featured + .featured {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .featured-date {
    border-left: 1px solid var(--line) !important;
  }
  .featured-primary .percentage-art {
    font-size: 170px;
    top: 14px;
    right: 32px;
  }
  .featured-primary .feature-bottom h3 {
    font-size: 23px;
  }
  .featured-primary .feature-bottom p {
    font-size: 14px;
  }
  .feature-category {
    font-size: 11px;
  }
  .feature-bottom h3 {
    font-size: 17px;
    letter-spacing: -0.4px;
  }
  .feature-bottom p {
    font-size: 11px;
  }
  .feature-corner {
    font-size: 23px;
  }
  .text-art {
    top: 56px;
    height: 70px;
  }
  .text-art > span:first-child {
    font-size: 67px;
  }
  .text-caret {
    height: 51px;
    margin-left: 5px;
  }
  .date-art {
    top: 61px;
    font-size: 57px;
  }
  .feature-index {
    display: block;
    bottom: 22px;
    right: 13px;
    font-size: 8px;
  }
  .toolbox,
  .related-tools {
    margin-top: 32px;
  }
  .toolbox-heading {
    padding-bottom: 13px;
    margin-bottom: 0;
  }
  .heading-group h2 {
    font-size: 23px;
  }
  .toolbox-heading > .section-caption {
    display: none;
  }
  .directory-layout {
    padding-top: 12px;
    gap: 14px;
  }
  .category-nav {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 4px;
  }
  .category-button {
    font-size: 13px;
    gap: 7px;
    min-height: 44px;
    padding: 0 7px;
    white-space: nowrap;
  }
  .category-button .icon {
    width: 16px;
    height: 16px;
  }
  .results-heading {
    height: 42px;
    padding-bottom: 12px;
  }
  .results-heading h3 {
    font-size: 14px;
  }
  .results-heading > span {
    font-size: 11px;
  }
  .tool-list {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .tool-row {
    min-height: 101px;
    padding: 24px 2px 22px;
    gap: 15px;
  }
  .tool-icon {
    width: 30px;
  }
  .tool-copy {
    gap: 4px;
  }
  .tool-name {
    font-size: 16px;
  }
  .tool-description {
    font-size: 13px;
  }
  .tool-number {
    top: 10px;
    font-size: 9px;
  }
  .row-arrow {
    width: 19px;
    height: 19px;
  }
  .directory-footnote {
    font-size: 11px;
    line-height: 1.8;
    margin-top: 16px;
  }
  .site-footer {
    margin-top: 44px;
  }
  .footer-top {
    padding: 22px 0;
    gap: 16px;
    flex-wrap: wrap;
  }
  .footer-wordmark {
    font-size: 28px;
  }
  .footer-top p {
    font-size: 11px;
    flex: 1;
    line-height: 1.6;
  }
  .footer-top > a:last-child {
    font-size: 11px;
    gap: 7px;
  }
  .footer-bottom {
    gap: 12px;
    padding-bottom: 22px;
    font-size: 10px;
  }
  .footer-bottom > span:nth-child(2) {
    display: none;
  }
  .footer-bottom > span:first-child {
    font-size: 9px;
  }
  .breadcrumb {
    font-size: 12px;
    gap: 9px;
    padding: 24px 0;
  }
  .detail-heading {
    padding: 20px 0 28px;
  }
  .detail-heading h1 {
    font-size: 30px;
    letter-spacing: -1px;
    padding-right: 45px;
  }
  .detail-heading > p:last-child {
    font-size: 14px;
  }
  .detail-icon {
    height: 44px;
    width: 44px;
    top: 58px;
  }
  .detail-icon .icon {
    width: 25px;
    height: 25px;
  }
  .coming-soon {
    padding: 44px 18px 48px;
  }
  .coming-soon h2 {
    font-size: 25px;
  }
  .coming-soon p {
    font-size: 14px;
  }
  .detail-heading .eyebrow {
    font-size: 12px;
  }
  .about-page {
    padding-top: 36px;
  }
  .about-page h1 {
    font-size: 44px;
  }
  .about-lead {
    font-size: 19px;
    margin-top: 26px;
  }
  .desktop-break {
    display: none;
  }
  .about-page > p:not(.eyebrow):not(.about-lead) {
    font-size: 14px;
  }
  .about-principles {
    grid-template-columns: 1fr;
    margin: 32px 0;
  }
  .about-principles section {
    padding: 24px 0;
  }
  .about-principles section + section {
    border-top: 1px solid var(--line);
  }
  .about-principles p {
    font-size: 14px;
  }
  .about-note p {
    font-size: 14px;
  }
  .not-found {
    padding: 72px 0;
  }
  .not-found h1 {
    font-size: 28px;
    line-height: 1.5;
  }
  .not-found > p {
    font-size: 14px;
  }
  .empty-state {
    padding: 48px 10px;
  }
  .empty-state h3 {
    font-size: 18px;
  }
  .empty-state p {
    font-size: 13px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}
/* Keep supporting copy readable on every screen size. */
.tool-description {
  font-size: 14px;
}
.feature-bottom p {
  font-size: 14px;
}
.section-caption,
.search-suggestions,
.directory-footnote {
  font-size: 12px;
}
.feature-category,
.category-count,
.tool-number,
.eyebrow,
.results-heading > span {
  font-size: 12px;
}
.featured {
  min-height: 260px;
}
@media (max-width: 600px) {
  .featured {
    min-height: 220px;
  }
  .featured-primary {
    min-height: 206px;
  }
  .feature-bottom p {
    font-size: 12px;
  }
  .tool-description {
    font-size: 14px;
  }
  .footer-top p {
    font-size: 12px;
  }
}
.tool-guide {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--line, #dededb);
  max-width: 780px;
}
.tool-guide h2 { margin: 0 0 16px; font-size: 20px; }
.tool-guide p { margin: 10px 0; line-height: 1.8; overflow-wrap: anywhere; }

.featured-symbol {
  top: 62px;
  left: 26px;
  right: 26px;
  font: 64px/1.2 var(--mono);
  letter-spacing: -3px;
  white-space: nowrap;
}
.featured-symbol.unit-symbol {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 48px;
  letter-spacing: 0;
}
.unit-symbol .unit-arrow { font-size: 0.7em; color: var(--accent); }
.featured .feature-bottom h3 { word-break: keep-all; }
@media (max-width: 600px) {
  .featured-symbol { top: 58px; left: 18px; right: 18px; font-size: 44px; }
  .featured-symbol.unit-symbol { font-size: 28px; gap: 6px; }
  .featured-primary .featured-symbol { top: 45px; font-size: 64px; }
}

@media (max-width: 380px) {
  .header-inner { gap: 12px; justify-content: space-between; }
  .brand-korean { font-size: 28px; }
  .top-nav { gap: 12px; }
  .top-link { font-size: 12px; gap: 3px; }
}


/* OS preference applies before scripts load; a manual choice lasts this visit. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { color-scheme: dark; }
}
:root[data-theme="dark"] { color-scheme: dark; }
.search-form input { color: var(--ink); }
input::placeholder, textarea::placeholder { color: var(--muted); opacity: 1; }
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-shrink: 0;
  min-width: 44px;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  font-size: 13px;
  white-space: nowrap;
  margin-left: auto;
}
.theme-toggle[hidden] { display: none; }
.theme-toggle:hover { background: var(--subtle); border-color: var(--accent); }
.theme-toggle[aria-pressed="true"] { color: var(--accent); background: var(--accent-light); }
.theme-toggle .icon { width: 18px; height: 18px; }
.header-inner { column-gap: 32px; }
.header-note + .theme-toggle { margin-left: 0; }
@media (max-width: 1100px) {
  .header-note { display: none; }
  .header-note + .theme-toggle { margin-left: auto; }
}
@media (max-width: 600px) {
  .header-inner { height: auto; min-height: 76px; flex-wrap: wrap; gap: 0 16px; padding-top: 12px; }
  .theme-toggle { order: 1; }
  .top-nav { order: 2; width: 100%; min-height: 48px; gap: 24px; }
}
@media print {
  :root, :root[data-theme] { color-scheme: light !important; }
  .theme-toggle { display: none; }
}