:root {
  --wissen-primary: #2f4f5f;
  --wissen-primary-dark: #1f3540;
  --wissen-accent: #4a6f5e;
  --wissen-accent-dark: #355345;
  --wissen-text: #1f2937;
  --wissen-muted: #5f6b7a;
  --wissen-bg: #f5f7f8;
  --wissen-surface: #ffffff;
  --wissen-soft: #eef5f3;
  --wissen-blue-soft: #eef5fa;
  --wissen-border: #dbe4e2;
  --wissen-focus: #7c4a00;
  --wissen-shadow: 0 6px 20px rgba(15, 23, 42, 0.08);
  --wissen-radius: 12px;
  --wissen-max: 1050px;
}

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

html {
  scroll-behavior: smooth;
}

body.wissen-page {
  margin: 0;
  background: var(--wissen-bg);
  color: var(--wissen-text);
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Arial,
    sans-serif;
  line-height: 1.68;
}

.wissen-page a {
  color: var(--wissen-primary);
  text-underline-offset: 0.18em;
}

.wissen-page a:hover {
  color: var(--wissen-primary-dark);
}

.wissen-page a:focus-visible,
.wissen-page button:focus-visible {
  outline: 3px solid var(--wissen-focus);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  z-index: 9999;
  top: 0.5rem;
  left: 0.5rem;
  transform: translateY(-180%);
  padding: 0.75rem 1rem;
  background: #000;
  color: #fff !important;
  border-radius: 6px;
}

.skip-link:focus {
  transform: translateY(0);
}

.wissen-topbar {
  background: #fff;
  border-bottom: 1px solid var(--wissen-border);
}

.wissen-topbar__inner {
  width: min(calc(100% - 2rem), var(--wissen-max));
  min-height: 64px;
  margin: 0 auto;
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}

.wissen-brand {
  font-weight: 800;
  color: var(--wissen-primary-dark) !important;
  text-decoration: none;
}

.wissen-nav {
  display: flex;
  gap: 0.35rem;
  align-items: center;
  flex-wrap: wrap;
}

.wissen-nav a {
  padding: 0.55rem 0.7rem;
  color: var(--wissen-text);
  font-size: 0.94rem;
  font-weight: 650;
  text-decoration: none;
  border-radius: 6px;
}

.wissen-nav a:hover,
.wissen-nav a[aria-current="page"] {
  background: var(--wissen-soft);
  color: var(--wissen-primary-dark);
}

.wissen-main {
  width: min(calc(100% - 2rem), var(--wissen-max));
  margin: 0 auto;
  padding-bottom: 4rem;
}

.wissen-breadcrumb {
  padding: 1.1rem 0 0;
  color: var(--wissen-muted);
  font-size: 0.92rem;
}

.wissen-hero {
  margin: 1.2rem 0 2rem;
  padding: clamp(2rem, 5vw, 3.7rem);
  color: #fff;
  background:
    linear-gradient(
      135deg,
      #111827 0%,
      #1f3540 52%,
      #4a6f5e 100%
    );
  border-radius: var(--wissen-radius);
  box-shadow: var(--wissen-shadow);
}

.wissen-eyebrow {
  margin: 0 0 0.55rem;
  color: #dff2e9;
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.wissen-hero h1 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
}

.wissen-lead {
  max-width: 820px;
  margin: 1.25rem 0 0;
  color: #eef7f3;
  font-size: clamp(1.05rem, 2vw, 1.24rem);
}

.wissen-meta {
  margin: 1.35rem 0 0;
  color: #d8e7e2;
  font-size: 0.9rem;
}

.wissen-content,
.wissen-panel {
  margin-bottom: 1.5rem;
  padding: clamp(1.45rem, 4vw, 2.4rem);
  background: var(--wissen-surface);
  border: 1px solid var(--wissen-border);
  border-radius: var(--wissen-radius);
  box-shadow: var(--wissen-shadow);
}

.wissen-content h2,
.wissen-panel h2 {
  margin: 2.4rem 0 1rem;
  color: var(--wissen-primary-dark);
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.2;
}

.wissen-content > h2:first-child,
.wissen-panel > h2:first-child {
  margin-top: 0;
}

.wissen-content h3,
.wissen-panel h3 {
  margin: 1.8rem 0 0.75rem;
  color: #273640;
  font-size: 1.25rem;
}

.wissen-content p,
.wissen-panel p {
  max-width: 78ch;
}

.wissen-summary {
  margin-bottom: 2rem;
  padding: 1.3rem 1.45rem;
  background: var(--wissen-soft);
  border-left: 5px solid var(--wissen-accent);
  border-radius: 0 9px 9px 0;
}

.wissen-summary p:last-child {
  margin-bottom: 0;
}

.wissen-note {
  padding: 1.1rem 1.3rem;
  background: var(--wissen-blue-soft);
  border-left: 5px solid var(--wissen-primary);
  border-radius: 0 8px 8px 0;
}

.wissen-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(245px, 1fr));
  gap: 1.1rem;
  margin: 1.5rem 0;
}

.wissen-card {
  min-width: 0;
  padding: 1.3rem;
  background: #fff;
  border: 1px solid var(--wissen-border);
  border-radius: 10px;
}

.wissen-card h2,
.wissen-card h3 {
  margin-top: 0;
}

.wissen-card p:last-child {
  margin-bottom: 0;
}

.wissen-tag {
  display: inline-block;
  margin-bottom: 0.65rem;
  padding: 0.25rem 0.6rem;
  color: var(--wissen-accent-dark);
  background: var(--wissen-soft);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 750;
}

.wissen-source-box {
  margin: 2rem 0 0;
  padding: 1.3rem 1.45rem;
  background: #f8faf9;
  border: 1px solid var(--wissen-border);
  border-left: 5px solid var(--wissen-primary);
  border-radius: 9px;
}

.wissen-source-box h2,
.wissen-source-box h3 {
  margin-top: 0;
}

.source-type {
  display: inline-block;
  margin-right: 0.3rem;
  padding: 0.14rem 0.48rem;
  color: #fff;
  background: var(--wissen-primary);
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 750;
  vertical-align: 0.08em;
}

.source-type.primary {
  background: var(--wissen-accent-dark);
}

.source-type.literature {
  background: #4b5563;
}

.source-type.analysis {
  background: #75543b;
}

.source-type.model {
  background: #5b3f82;
}

.source-type.international {
  background: #2f6b6a;
}

.source-type.book {
  background: #795548;
}

.wissen-checklist {
  padding-left: 1.25rem;
}

.wissen-checklist li {
  margin-bottom: 0.65rem;
}

.wissen-table-wrap {
  overflow-x: auto;
}

.wissen-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
}

.wissen-table th,
.wissen-table td {
  padding: 0.8rem;
  border: 1px solid var(--wissen-border);
  text-align: left;
  vertical-align: top;
}

.wissen-table th {
  background: var(--wissen-soft);
}

.wissen-steps {
  counter-reset: wissen-step;
  padding: 0;
  list-style: none;
}

.wissen-steps li {
  position: relative;
  margin: 0 0 1rem;
  padding: 1rem 1rem 1rem 3.6rem;
  background: #fafcfb;
  border: 1px solid var(--wissen-border);
  border-radius: 9px;
}

.wissen-steps li::before {
  counter-increment: wissen-step;
  content: counter(wissen-step);
  position: absolute;
  top: 0.92rem;
  left: 1rem;
  width: 1.9rem;
  height: 1.9rem;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--wissen-accent);
  border-radius: 50%;
  font-weight: 800;
}

.wissen-cta {
  margin-top: 2rem;
  padding: 1.4rem 1.5rem;
  background: var(--wissen-soft);
  border-left: 5px solid var(--wissen-accent);
  border-radius: 9px;
}

.wissen-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.1rem;
}

.wissen-button {
  display: inline-block;
  padding: 0.72rem 1rem;
  color: #fff !important;
  background: var(--wissen-primary);
  border-radius: 7px;
  font-weight: 750;
  text-decoration: none;
}

.wissen-button:hover {
  background: var(--wissen-primary-dark);
}

.wissen-button--secondary {
  background: var(--wissen-accent);
}

.wissen-button--secondary:hover {
  background: var(--wissen-accent-dark);
}

.wissen-footer {
  margin-top: 3rem;
  padding: 1.8rem 1rem;
  color: #fff;
  background: #111827;
  text-align: center;
}

.wissen-footer a {
  color: #fff;
}

.wissen-footer p {
  margin-inline: auto;
}

@media (max-width: 700px) {
  .wissen-topbar__inner {
    padding: 0.6rem 0;
    align-items: flex-start;
    flex-direction: column;
  }

  .wissen-nav {
    width: 100%;
  }

  .wissen-hero {
    padding: 1.7rem;
  }

  .wissen-content,
  .wissen-panel {
    padding: 1.25rem;
  }
}


/* BOOK CONTEXT START */

.book-context {
  display: grid;
  grid-template-columns: minmax(145px, 190px) 1fr;
  gap: clamp(1.25rem, 3vw, 2rem);
  align-items: start;
  margin: 2rem 0;
  padding: clamp(1.25rem, 3vw, 1.8rem);
  background: linear-gradient(135deg, #f8faf9, #eef5f3);
  border: 1px solid var(--wissen-border);
  border-left: 5px solid var(--wissen-accent);
  border-radius: var(--wissen-radius);
}

.book-context__cover {
  text-align: center;
}

.book-context__cover a {
  display: inline-block;
}

.book-context__cover img {
  display: block;
  width: 100%;
  max-width: 180px;
  height: auto;
  margin-inline: auto;
  border-radius: 8px;
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.18);
}

.book-context__eyebrow,
.author-context__eyebrow {
  margin: 0 0 0.45rem;
  color: var(--wissen-accent-dark);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.book-context h2 {
  margin: 0 0 0.6rem;
  color: var(--wissen-primary-dark);
  font-size: clamp(1.45rem, 3vw, 2rem);
}

.book-context__subtitle {
  max-width: 66ch;
  margin-bottom: 0.9rem;
  font-weight: 650;
  color: #374151;
}

.book-context__meta {
  margin: 0.8rem 0 1rem;
  color: var(--wissen-muted);
  font-size: 0.92rem;
}

.book-context__chapters {
  margin: 1rem 0;
  padding: 1rem 1.1rem;
  background: #fff;
  border: 1px solid var(--wissen-border);
  border-radius: 8px;
}

.book-context__chapters p {
  margin-bottom: 0.55rem;
}

.book-context__chapters p:last-child {
  margin-bottom: 0;
}

.author-context {
  display: grid;
  grid-template-columns: 125px 1fr;
  gap: 1.4rem;
  align-items: start;
  margin: 2rem 0;
  padding: 1.4rem;
  background: #fff;
  border: 1px solid var(--wissen-border);
  border-radius: var(--wissen-radius);
  box-shadow: var(--wissen-shadow);
}

.author-context__portrait {
  display: block;
  width: 120px;
  height: 120px;
  object-fit: cover;
  object-position: center top;
  border-radius: 50%;
}

.author-context h2 {
  margin: 0 0 0.7rem;
  color: var(--wissen-primary-dark);
  font-size: 1.55rem;
}

.author-context p:last-child {
  margin-bottom: 0;
}

.book-context .wissen-buttons {
  margin-top: 1rem;
}

@media (max-width: 650px) {
  .book-context {
    grid-template-columns: 1fr;
  }

  .book-context__cover {
    text-align: left;
  }

  .book-context__cover img {
    max-width: 155px;
    margin-inline: 0;
  }

  .author-context {
    grid-template-columns: 1fr;
  }

  .author-context__portrait {
    width: 105px;
    height: 105px;
  }
}

/* BOOK CONTEXT END */