:root {
  --red: #c8102e;
  --bg: #060607;
  --panel: #101013;
  --line: #26262a;
  --grey: #9a9aa0;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  background: var(--bg);
  color: #fff;
  font-family: Inter, "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

/* Header */
.pf-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: calc(18px + env(safe-area-inset-top)) 6vw 18px;
  background: rgba(6, 6, 7, 0.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.pf-logo {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.04em;
  text-decoration: none;
  white-space: nowrap;
}

.pf-logo span {
  color: var(--red);
}

.pf-header__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.2s, background-color 0.2s;
}

.pf-header__cta:hover,
.pf-header__cta:focus-visible {
  border-color: var(--red);
  background: rgba(200, 16, 46, 0.14);
  outline: none;
}

/* Hero */
.pf-hero {
  padding: 64px 6vw 48px;
  max-width: 960px;
}

.pf-eyebrow {
  color: var(--red);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0 0 18px;
}

.pf-hero h1 {
  margin: 0 0 24px;
  font-size: clamp(34px, 6vw, 58px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.pf-hero p {
  margin: 0;
  max-width: 640px;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.6;
}

/* Section heading shared by features / steps / example / body */
.pf-section {
  padding: 0 6vw 56px;
  max-width: 1100px;
}

.pf-section h2 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 28px;
}

/* Feature tiles */
.pf-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.pf-features li {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
}

.pf-features svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: var(--red);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin-bottom: 14px;
}

.pf-features strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
}

.pf-features span {
  display: block;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  line-height: 1.55;
}

/* Process steps */
.pf-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: pf-step;
}

.pf-steps li {
  position: relative;
  padding: 24px 20px 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(160deg, rgba(200, 16, 46, 0.08), rgba(16, 16, 19, 0.4));
}

.pf-steps li::before {
  counter-increment: pf-step;
  content: counter(pf-step, decimal-leading-zero);
  display: block;
  color: var(--red);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

.pf-steps strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
}

.pf-steps span {
  display: block;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  line-height: 1.55;
}

/* Illustrative example */
.pf-example {
  padding: 30px 30px 30px 28px;
  border-left: 3px solid var(--red);
  border-radius: 4px 14px 14px 4px;
  background: var(--panel);
}

.pf-example__label {
  display: block;
  color: var(--red);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.pf-example p {
  margin: 0;
  color: rgba(255, 255, 255, 0.85);
  font-size: 16px;
  line-height: 1.75;
}

/* Example / case cards (individuelle Entwicklung) */
.pf-cases {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.pf-cases__card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
}

.pf-cases__label {
  display: block;
  margin-bottom: 16px;
  color: var(--red);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.pf-cases__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  color: var(--grey);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.pf-cases__head svg {
  flex: none;
  width: 24px;
  height: 24px;
  fill: none;
  stroke: var(--red);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.pf-cases h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.pf-cases p {
  margin: 0;
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
  line-height: 1.65;
}

.pf-cases__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.pf-cases__tags li {
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 10.5px;
}

/* Body copy */
.pf-body p {
  color: rgba(255, 255, 255, 0.78);
  font-size: 16px;
  line-height: 1.7;
  margin: 0 0 20px;
  max-width: 760px;
}

.pf-body p:last-child {
  margin-bottom: 0;
}

/* CTA band */
.pf-cta {
  margin: 0 6vw 72px;
  padding: 40px 6vw;
  max-width: 1100px;
  border-radius: 20px;
  background: linear-gradient(140deg, rgba(200, 16, 46, 0.16), rgba(16, 16, 19, 0.4));
  border: 1px solid rgba(200, 16, 46, 0.28);
  text-align: center;
}

.pf-cta h2 {
  margin: 0 0 12px;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.pf-cta p {
  margin: 0 0 26px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 16px;
}

.pf-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.pf-cta__actions a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s, background-color 0.2s, border-color 0.2s;
}

.pf-cta__actions a.primary {
  background: var(--red);
  color: #fff;
}

.pf-cta__actions a.primary:hover {
  background: #ed1842;
}

.pf-cta__actions a.secondary {
  border: 1px solid rgba(255, 255, 255, 0.24);
}

.pf-cta__actions a.secondary:hover {
  border-color: rgba(255, 255, 255, 0.6);
}

/* Footer (mirrors index.html's .site-footer) */
.pf-footer {
  display: grid;
  gap: 6px;
  padding: 32px 6vw calc(40px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  color: var(--grey);
  font-size: 13px;
}

.pf-footer a {
  text-decoration: none;
}

.pf-footer a:hover {
  color: #fff;
}

.pf-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
}

@media (max-width: 900px) {
  .pf-features,
  .pf-steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 700px) {
  .pf-header {
    padding: calc(14px + env(safe-area-inset-top)) 20px 14px;
  }

  .pf-hero,
  .pf-section,
  .pf-footer {
    padding-left: 20px;
    padding-right: 20px;
  }

  .pf-features,
  .pf-steps,
  .pf-cases {
    grid-template-columns: 1fr;
  }

  .pf-example {
    padding: 24px 22px;
  }

  .pf-cta {
    margin-left: 20px;
    margin-right: 20px;
    padding: 32px 20px;
  }
}