/* Kigumi tokens — brand guide v1.2 */
:root {
  --hinoki: #FAF7F0;
  --paper:  #FCFAF5;
  --ink:    #110D0A;
  --sumi:   #1A1613;
  --aizome: #1B2845;
  --shu:    #B04A3A;
  --kinako: #C9A878;
  --kasumi: #8B8276;

  --ease: cubic-bezier(.22, 1, .36, 1);
  --d-fast: 180ms;
  --d-base: 400ms;
  --d-slow: 600ms;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--hinoki);
  color: var(--sumi);
  font-family: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body { overflow-x: hidden; }

a { color: inherit; text-decoration: none; }
::selection { background: var(--shu); color: var(--hinoki); }

/* Eyebrow */
.km-eyebrow {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--kasumi);
  font-weight: 400;
}

.km-label-mono {
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--kasumi);
  margin-top: 6px;
}

/* Display */
.km-display-xl {
  font-family: "IBM Plex Serif", Georgia, serif;
  font-weight: 600;
  font-size: clamp(56px, 7.2vw, 112px);
  line-height: 0.98;
  letter-spacing: -0.024em;
  color: var(--sumi);
  margin: 0;
}
.km-display-lg {
  font-family: "IBM Plex Serif", Georgia, serif;
  font-weight: 600;
  font-size: clamp(48px, 5.6vw, 84px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--sumi);
  margin: 0;
}
.km-display-md {
  font-family: "IBM Plex Serif", Georgia, serif;
  font-weight: 600;
  font-size: clamp(36px, 4.5vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.018em;
  color: var(--sumi);
  margin: 0;
}
.km-display-sm {
  font-family: "IBM Plex Serif", Georgia, serif;
  font-weight: 600;
  font-size: clamp(28px, 3vw, 36px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--sumi);
  margin: 0;
}

.km-body {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--sumi);
  margin: 0;
}

.km-data-xl {
  font-family: "IBM Plex Mono", monospace;
  font-size: 56px;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--sumi);
  line-height: 1;
}
.km-data-md {
  font-family: "IBM Plex Mono", monospace;
  font-size: 32px;
  font-weight: 400;
  letter-spacing: -0.015em;
  color: var(--sumi);
  line-height: 1;
}
.km-data-inline {
  font-family: "IBM Plex Mono", monospace;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--sumi);
}

/* Nav */
.km-nav-link {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 13px;
  font-weight: 500;
  color: var(--sumi);
  position: relative;
  padding-bottom: 2px;
  transition: color var(--d-fast) var(--ease);
}
.km-nav-link::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0;
  height: 1px; background: var(--sumi);
  transform: scaleX(0); transform-origin: left center;
  transition: transform var(--d-base) var(--ease);
}
.km-nav-link:hover::after { transform: scaleX(1); }

/* Buttons */
.km-btn {
  display: inline-flex;
  align-items: center; justify-content: center;
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 500;
  font-size: 13px;
  padding: 12px 20px;
  border-radius: 4px;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: all var(--d-fast) var(--ease);
  border: 0.5px solid transparent;
  white-space: nowrap;
}
.km-btn-lg { padding: 16px 28px; font-size: 14px; }
.km-btn-primary {
  background: var(--aizome); color: var(--hinoki);
  border-color: var(--aizome);
}
.km-btn-primary:hover { filter: brightness(1.12); }
.km-btn-primary:active { transform: scale(0.98); }
.km-btn-secondary {
  background: transparent; color: var(--sumi);
  border-color: rgba(26, 22, 19, 0.25);
}
.km-btn-secondary:hover { border-color: var(--sumi); }
.km-btn-ghost {
  background: transparent; color: var(--sumi);
  border-color: transparent;
}
.km-btn-ghost:hover { color: var(--shu); }

/* Side cards */
.km-side-card {
  padding: 40px;
  background: var(--paper);
  height: 100%;
}
.km-row {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 0.5px solid rgba(26, 22, 19, 0.08);
}
.km-row:last-child { border-bottom: none; }
.km-row:first-child { padding-top: 0; }
.km-row-num {
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  color: var(--kasumi);
}
.km-row-h {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 600;
  font-size: 15px;
  color: var(--sumi);
  margin-bottom: 4px;
}
.km-row-b {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 13px;
  line-height: 1.55;
  color: var(--kasumi);
}

/* Pipeline */
.km-pipeline {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin-top: 32px;
  flex-wrap: wrap;
}
.km-pipeline-step {
  flex: 1;
  min-width: 110px;
  padding: 16px;
  border: 0.5px solid rgba(26, 22, 19, 0.12);
  background: var(--paper);
}
.km-pipeline-arrow {
  display: flex; align-items: center; justify-content: center;
  font-family: "IBM Plex Mono", monospace;
  color: var(--kasumi);
  padding: 0 8px;
}
.km-pipeline-name {
  font-family: "IBM Plex Serif", serif;
  font-weight: 600;
  font-size: 16px;
  color: var(--sumi);
  margin: 6px 0 4px;
}
.km-pipeline-desc {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 11px;
  color: var(--kasumi);
  line-height: 1.4;
}

.km-stat-row {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 24px 0;
  border-top: 0.5px solid rgba(26, 22, 19, 0.12);
  border-bottom: 0.5px solid rgba(26, 22, 19, 0.12);
}

/* Wins */
.km-win {
  padding: 32px;
  border-right: 0.5px solid rgba(26, 22, 19, 0.12);
  height: 100%;
  background: var(--paper);
  transition: background var(--d-base) var(--ease);
}
.km-win:last-child { border-right: none; }
.km-win:hover { background: var(--hinoki); }
.km-win-h {
  font-family: "IBM Plex Serif", serif;
  font-weight: 600;
  font-size: 22px;
  color: var(--sumi);
  margin: 16px 0 12px;
  line-height: 1.15;
}
.km-win-b {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 13px;
  line-height: 1.6;
  color: var(--kasumi);
  margin: 0;
}

/* Input */
.km-input {
  flex: 1;
  font-family: "IBM Plex Mono", monospace;
  font-size: 14px;
  padding: 16px 18px;
  border: 0.5px solid rgba(26, 22, 19, 0.25);
  background: var(--paper);
  color: var(--sumi);
  border-radius: 4px;
  outline: none;
  transition: border-color var(--d-fast) var(--ease), box-shadow var(--d-fast) var(--ease);
  min-width: 0;
}
.km-input:focus {
  border-color: var(--aizome);
  box-shadow: 0 0 0 2px rgba(27, 40, 69, 0.2);
}
.km-input::placeholder { color: var(--kasumi); }

/* Footer */
.km-foot-link {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 13px;
  color: var(--kinako);
  transition: color var(--d-fast) var(--ease);
}
.km-foot-link:hover { color: var(--hinoki); }

@media (max-width: 880px) {
  section { padding-left: 24px !important; padding-right: 24px !important; }
  header nav { display: none !important; }
  div[style*="grid-template-columns: 1fr 1fr"] { grid-template-columns: 1fr !important; }
  div[style*="grid-template-columns: 1.1fr 1fr"] { grid-template-columns: 1fr !important; }
  div[style*="grid-template-columns: 1.2fr 1fr"] { grid-template-columns: 1fr !important; }
  div[style*="grid-template-columns: 1.4fr 1fr"] { grid-template-columns: 1fr !important; }
  div[style*="grid-template-columns: 2fr 1fr"] { grid-template-columns: 1fr !important; }
  div[style*="grid-template-columns: repeat(4, 1fr)"] { grid-template-columns: 1fr 1fr !important; }
  .km-win { border-right: none; border-bottom: 0.5px solid rgba(26, 22, 19, 0.12); }
}