:root {
  color-scheme: dark;
  --surface: #15151c;
  --text: #f8f7f4;
  --muted: #c4c0c9;
  --line: #393842;
  --focus: #f9dc90;
  font-family: "Instrument Sans", "Noto Sans KR", "Malgun Gothic", system-ui, sans-serif;
  line-height: 1.55;
}

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

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background: var(--surface);
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 5px;
}

.container {
  width: min(100% - 3rem, 66rem);
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem 1.25rem;
  padding-block: 1.1rem;
}

.brand {
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 750;
  letter-spacing: -0.035em;
  text-decoration: none;
}

.admin-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  color: var(--muted);
  font-size: 0.875rem;
  text-decoration: none;
}

.admin-link:hover {
  border-color: var(--muted);
  color: var(--text);
}

main {
  padding-block: clamp(3.75rem, 10vw, 8rem);
}

h1 {
  margin: 0 0 clamp(1.65rem, 4vw, 3rem);
  font-size: clamp(2.75rem, 8vw, 5.5rem);
  font-weight: 750;
  line-height: 1.1;
  letter-spacing: -0.075em;
}

.tools {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(0.875rem, 2.2vw, 1.5rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.tool {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 14rem;
  padding: clamp(1.45rem, 3.6vw, 2.5rem);
  border: 1px solid var(--line);
  border-top: 2px solid var(--accent);
  border-radius: 0.65rem;
  background: linear-gradient(155deg, var(--wash), #1d1c25 72%);
  text-decoration: none;
}

.tool:hover {
  border-color: var(--accent);
}

.tool-gim {
  --accent: #f6d382;
  --wash: #343022;
}

.tool-abc {
  --accent: #b8b0fb;
  --wash: #29253b;
}

.tool-name {
  margin-bottom: auto;
  color: var(--accent);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.tool-arrow {
  position: absolute;
  inset-block-start: clamp(1.3rem, 3vw, 2.2rem);
  inset-inline-end: clamp(1.45rem, 3.6vw, 2.5rem);
  color: var(--accent);
  font-size: 1.6rem;
  line-height: 1;
}

.tool h2 {
  margin: 1.5rem 0 0.3rem;
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-weight: 750;
  letter-spacing: -0.055em;
  word-break: keep-all;
}

.tool p {
  margin: 0;
  color: var(--muted);
  word-break: keep-all;
}

@media (max-width: 42rem) {
  .container {
    width: calc(100% - 2rem);
  }

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

  .tool {
    min-height: 10.75rem;
  }
}