:root {
  --platform-dark: #191917;
  --platform-dark-soft: #222220;
  --platform-green: #5CCE8A;
  --platform-green-dark: #247A49;
  --platform-green-pale: #E9F5EE;
  --platform-surface: #F5F3EE;
  --platform-card: #FFFFFF;
  --platform-text: #1D1D1A;
  --platform-muted: #686861;
  --platform-border: #D9D5CB;
}

* { box-sizing: border-box; }

html { min-height: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'DM Sans', sans-serif;
  color: var(--platform-text);
  background: var(--platform-surface);
  -webkit-font-smoothing: antialiased;
}

.platform-page {
  display: flex;
  flex-direction: column;
}

.platform-main {
  flex: 1;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 38px 0 56px;
}

.platform-intro {
  max-width: 720px;
  margin-bottom: 26px;
}

.eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--platform-green-dark);
}

.platform-intro h1,
.placeholder-panel h1 {
  margin: 13px 0 12px;
  font-size: clamp(42px, 5vw, 60px);
  line-height: 1.07;
  font-weight: 400;
  letter-spacing: -0.035em;
}

.platform-intro h1 { margin-top: 0; }

.platform-intro > p,
.placeholder-panel > p {
  margin: 0;
  max-width: 640px;
  color: var(--platform-muted);
  font-size: 17px;
  line-height: 1.7;
}

.experience-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.experience-card {
  position: relative;
  min-height: 348px;
  display: flex;
  flex-direction: column;
  padding: 34px;
  background: var(--platform-card);
  border: 1px solid var(--platform-border);
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(25,25,23,0.045);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.experience-card:hover,
.experience-card:focus-within {
  transform: translateY(-3px);
  border-color: #B9B4A9;
  box-shadow: 0 18px 46px rgba(25,25,23,0.09);
}

.experience-card-top {
  display: flex;
  align-items: center;
  margin-bottom: 22px;
}

.experience-icon,
.placeholder-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--platform-green-pale);
  color: var(--platform-green-dark);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 18px;
  font-weight: 600;
}

.experience-card h2 {
  margin: 0 0 13px;
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.025em;
}

.experience-description {
  margin: 0;
  min-height: 48px;
  color: var(--platform-muted);
  font-size: 15px;
  line-height: 1.65;
}

.experience-examples,
.experience-tags {
  margin: 22px 0 26px;
}

.experience-examples ul,
.experience-tags {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 8px;
}

.experience-examples ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.experience-examples li,
.experience-tags span {
  padding: 7px 11px;
  border: 1px solid #D1CCC1;
  border-radius: 999px;
  background: transparent;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  color: #5F5D57;
}

.platform-button {
  margin-top: auto;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 0 20px;
  border: 1px solid var(--platform-dark);
  border-radius: 6px;
  color: #FFFFFF;
  background: var(--platform-dark);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-decoration: none;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
}

.platform-button::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
}

.platform-button:hover,
.platform-button:focus-visible {
  color: var(--platform-dark);
  background: var(--platform-green);
  border-color: var(--platform-green);
}

.experience-card:hover .platform-button {
  color: var(--platform-dark);
  background: var(--platform-green);
  border-color: var(--platform-green);
}

.platform-button:focus-visible {
  outline: 2px solid var(--platform-green);
  outline-offset: 3px;
}

.placeholder-page { background: var(--platform-dark); }

.placeholder-main {
  flex: 1;
  width: min(900px, calc(100% - 48px));
  margin: 0 auto;
  display: grid;
  place-items: center;
  padding: 72px 0;
}

.placeholder-panel {
  width: 100%;
  padding: clamp(32px, 7vw, 68px);
  border: 1px solid rgba(255,255,255,0.12);
  border-top: 3px solid var(--platform-green);
  border-radius: 8px;
  background: var(--platform-dark-soft);
  color: #FFFFFF;
}

.placeholder-panel .placeholder-mark { margin: 32px 0 24px; }

.placeholder-panel h1 {
  max-width: 720px;
  font-size: clamp(32px, 5vw, 52px);
}

.placeholder-panel > p { color: rgba(255,255,255,0.55); }

.platform-button-inline {
  width: fit-content;
  margin-top: 34px;
  background: transparent;
  border-color: rgba(255,255,255,0.28);
}

@media (max-width: 760px) {
  .platform-main,
  .placeholder-main {
    width: min(100% - 32px, 1180px);
  }

  .platform-main { padding: 30px 0 44px; }
  .platform-intro { margin-bottom: 24px; }
  .platform-intro h1 { font-size: 42px; }
  .platform-intro > p { font-size: 16px; }
  .experience-grid { grid-template-columns: 1fr; }
  .experience-card { min-height: 0; padding: 27px 25px; }
  .experience-description { min-height: 0; }
  .platform-button { margin-top: 26px; }
  .placeholder-main { padding: 40px 0; }
  .placeholder-panel { padding: 30px 24px; }
  .placeholder-panel h1 { font-size: 34px; }
}

@media (max-width: 380px) {
  .platform-intro h1 { font-size: 38px; }
  .experience-card { padding: 25px 21px; }
}