/* vortrag-innovation.de · Stylesheet
   Systemschrift Arial: keine externen Fonts, keine Datenübertragung an Dritte. */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }

:root {
  --blue: #1f53a3;
  --blue-dark: #163d7a;
  --blue-soft: #eaf0fa;
  --blue-line: #c9d7ee;
  --ink: #101828;
  --ink-2: #3d4656;
  --muted: #6b7486;
  --line: #e3e7ee;
  --paper: #f5f7fa;
  --white: #ffffff;
  --accent: #f2b631;
  --radius: 6px;
  --wrap: 1180px;
  --gutter: 24px;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.narrow { max-width: 780px; }

.skip { position: absolute; left: -9999px; top: 0; background: var(--blue); color: #fff; padding: 10px 16px; z-index: 200; }
.skip:focus { left: 16px; top: 16px; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* ── Header ── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.96);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.brand { display: flex; flex-direction: column; text-decoration: none; line-height: 1.15; }
.brand-name { font-weight: 700; font-size: 17px; color: var(--ink); letter-spacing: -0.01em; }
.brand-name b { color: var(--blue); }
.brand-sub { font-size: 12px; color: var(--muted); letter-spacing: 0.04em; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a { text-decoration: none; font-size: 15px; color: var(--ink-2); padding: 8px 12px; border-radius: var(--radius); }
.nav a:hover { color: var(--blue); background: var(--blue-soft); }
.nav a[aria-current="page"] { color: var(--blue); font-weight: 700; }
.nav .nav-cta { background: var(--blue); color: #fff; font-weight: 700; margin-left: 8px; padding: 10px 18px; }
.nav .nav-cta:hover { background: var(--blue-dark); color: #fff; }

.menu-btn { display: none; background: none; border: 1px solid var(--line); border-radius: var(--radius); padding: 8px 12px; font: inherit; font-size: 15px; color: var(--ink); cursor: pointer; }

/* ── Buttons ── */
.btn { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; font-size: 16px; padding: 15px 26px; border-radius: var(--radius); border: 2px solid transparent; transition: background .15s, color .15s, border-color .15s; }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); }
.btn-outline { border-color: var(--blue); color: var(--blue); background: transparent; }
.btn-outline:hover { background: var(--blue-soft); }
.btn-white { background: #fff; color: var(--blue); }
.btn-white:hover { background: var(--blue-soft); }
.btn-line-white { border-color: rgba(255,255,255,.6); color: #fff; }
.btn-line-white:hover { border-color: #fff; background: rgba(255,255,255,.08); }
.btn .arr { font-weight: 400; }

.text-link { color: var(--blue); font-weight: 700; text-decoration: none; border-bottom: 2px solid var(--blue-line); }
.text-link:hover { border-color: var(--blue); }

/* ── Typo ── */
h1, h2, h3 { line-height: 1.12; letter-spacing: -0.02em; margin: 0; }
h1 { font-size: clamp(2.3rem, 5.2vw, 3.9rem); font-weight: 700; }
h2 { font-size: clamp(1.75rem, 3.4vw, 2.6rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--blue); margin-bottom: 14px; }
.lead { font-size: 1.15rem; color: var(--ink-2); line-height: 1.7; }
.muted { color: var(--muted); }

section { padding: 96px 0; }
.sec-head { max-width: 760px; margin-bottom: 48px; }
.sec-head h2 { margin-bottom: 16px; }
.sec-head p { color: var(--ink-2); font-size: 1.08rem; }
.bg-paper { background: var(--paper); }
.bg-soft { background: var(--blue-soft); }

/* ── Hero ── */
.hero { padding: 72px 0 80px; }
.hero .wrap { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 64px; align-items: center; }
.h1-kicker { display: block; font-size: 15px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--blue); margin-bottom: 18px; }
.hero h1 { margin-bottom: 26px; }
.hero h1 .hl { background: linear-gradient(transparent 68%, rgba(242,182,49,.55) 68%); }
.hero .lead { max-width: 560px; margin-bottom: 34px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 44px; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); padding-top: 26px; max-width: 600px; }
.stat b { display: block; font-size: 1.9rem; letter-spacing: -0.02em; line-height: 1; color: var(--ink); }
.stat span { display: block; font-size: 13px; color: var(--muted); margin-top: 8px; }

.hero-figure { position: relative; margin: 0; border-radius: 8px; overflow: hidden; background: #1c2a44; aspect-ratio: 683 / 900; }
.hero-figure img { width: 100%; height: 100%; object-fit: cover; object-position: center 15%; }
.hero-figure figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 80px 28px 24px; background: linear-gradient(to top, rgba(10,18,34,.88), rgba(10,18,34,0)); color: #fff; }
.hero-figure blockquote { margin: 0 0 10px; font-size: 1.02rem; line-height: 1.55; font-style: italic; }
.hero-figure cite { font-style: normal; font-size: 13px; color: rgba(255,255,255,.72); }

/* Page hero (Unterseiten) */
.page-hero { padding: 64px 0 56px; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, var(--blue-soft), #fff); }
.page-hero h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); margin-bottom: 20px; max-width: 900px; }
.page-hero .lead { max-width: 760px; margin-bottom: 0; }
.crumbs { font-size: 14px; color: var(--muted); margin-bottom: 22px; }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--blue); }

/* ── Logos ── */
.clients { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--paper); padding: 26px 0; }
.clients .wrap { display: flex; align-items: center; gap: 28px; }
.clients-label { font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); white-space: nowrap; }
.clients ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px 30px; }
.clients li { font-weight: 700; font-size: 16px; color: #8a92a3; letter-spacing: -0.01em; }

/* ── Intro two columns ── */
.cols-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.cols-2 p { color: var(--ink-2); }

/* ── Cards ── */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card { border: 1px solid var(--line); border-radius: 8px; padding: 32px 28px; background: #fff; display: flex; flex-direction: column; transition: border-color .15s, box-shadow .15s; }
.card:hover { border-color: var(--blue-line); box-shadow: 0 10px 30px rgba(16,24,40,.06); }
.card-num { font-size: 13px; font-weight: 700; color: var(--blue); letter-spacing: .1em; margin-bottom: 18px; }
.card h3 { margin-bottom: 6px; }
.card .sub { font-weight: 700; color: var(--ink-2); font-size: 15px; margin-bottom: 14px; line-height: 1.45; }
.card p { color: var(--ink-2); font-size: 15.5px; flex: 1; }
.card .text-link { align-self: flex-start; font-size: 15px; }
.sec-foot { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 14px; }

/* ── Facts (dark) ── */
.dark { background: var(--ink); color: #fff; }
.dark .eyebrow { color: var(--accent); }
.dark .sec-head p { color: rgba(255,255,255,.68); }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid rgba(255,255,255,.12); border-left: 1px solid rgba(255,255,255,.12); }
.fact { padding: 32px 28px; border-right: 1px solid rgba(255,255,255,.12); border-bottom: 1px solid rgba(255,255,255,.12); }
.fact b { display: block; font-size: 2.4rem; letter-spacing: -0.03em; line-height: 1; color: var(--accent); margin-bottom: 12px; }
.fact h3 { font-size: 1.05rem; margin-bottom: 8px; }
.fact p { margin: 0; font-size: 15px; color: rgba(255,255,255,.66); }

/* ── Tiles (Anlässe) ── */
.tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.tile { display: block; text-decoration: none; background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 26px 22px; transition: border-color .15s, transform .15s; }
.tile:hover { border-color: var(--blue); transform: translateY(-2px); }
.tile h3 { font-size: 1.08rem; margin-bottom: 8px; }
.tile p { font-size: 14.5px; color: var(--ink-2); margin: 0 0 14px; }
.tile .go { font-size: 14px; font-weight: 700; color: var(--blue); }

/* ── Feature (Ratgeber-Teaser) ── */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.feature-box { background: #fff; border: 1px solid var(--blue-line); border-left: 5px solid var(--blue); border-radius: 8px; padding: 32px; }
.feature-box h3 { margin-bottom: 16px; }

/* Pfeil-Listen */
.arrows { list-style: none; margin: 0 0 1em; padding: 0; }
.arrows li { position: relative; padding-left: 28px; margin-bottom: 10px; color: var(--ink-2); }
.arrows li::before { content: "\2192"; position: absolute; left: 0; top: 0; color: var(--blue); font-weight: 700; }
.dark .arrows li { color: rgba(255,255,255,.78); }

/* ── Testimonials ── */
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.quote { margin: 0; background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 30px 28px; display: flex; flex-direction: column; }
.quote blockquote { margin: 0 0 22px; font-size: 15.5px; line-height: 1.7; color: var(--ink-2); flex: 1; }
.quote blockquote::before { content: "\201E"; display: block; font-size: 3rem; line-height: .6; color: var(--blue); margin-bottom: 12px; font-family: Georgia, serif; }
.quote figcaption { border-top: 1px solid var(--line); padding-top: 16px; font-size: 14px; }
.quote figcaption b { display: block; color: var(--ink); }
.quote figcaption span { color: var(--muted); }

/* ── FAQ ── */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 22px 48px 22px 0; font-weight: 700; font-size: 1.05rem; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 6px; top: 16px; font-size: 1.7rem; font-weight: 400; color: var(--blue); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--ink-2); padding-right: 48px; margin-bottom: 22px; }

/* ── CTA band ── */
.cta-band { background: var(--blue); color: #fff; padding: 88px 0; }
.cta-band .wrap { display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; align-items: center; }
.cta-band h2 { margin-bottom: 14px; }
.cta-band p { color: rgba(255,255,255,.82); font-size: 1.08rem; margin: 0; }
.cta-band .actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: flex-end; }

/* ── Themen-Seite ── */
.jump { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; }
.jump a { text-decoration: none; font-size: 14.5px; font-weight: 700; color: var(--blue); background: #fff; border: 1px solid var(--blue-line); padding: 8px 14px; border-radius: 999px; }
.jump a:hover { background: var(--blue); color: #fff; border-color: var(--blue); }

.topic { display: grid; grid-template-columns: 220px 1fr; gap: 48px; padding: 64px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 90px; }
.topic:last-child { border-bottom: 0; }
.topic-side .n { font-size: 4rem; font-weight: 700; color: var(--blue-line); line-height: 1; letter-spacing: -0.04em; }
.topic-side .tag { display: block; margin-top: 12px; font-size: 13px; font-weight: 700; color: var(--blue); letter-spacing: .08em; text-transform: uppercase; }
.topic h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 8px; }
.topic .talk { font-weight: 700; color: var(--ink-2); margin-bottom: 20px; }
.topic-body > p { color: var(--ink-2); max-width: 760px; }
.topic-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin: 26px 0 22px; }
.topic-grid h3 { font-size: 15px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; }
.topic-img { margin: 0 0 26px; border-radius: 8px; overflow: hidden; background: #1c2a44; aspect-ratio: 16 / 7; max-width: 760px; }
.topic-img img { width: 100%; height: 100%; object-fit: cover; }

.books { display: grid; grid-template-columns: 300px 1fr; gap: 48px; align-items: center; }
.books-img { border-radius: 8px; overflow: hidden; background: #dfe5ef; aspect-ratio: 4 / 5; }
.books-img img { width: 100%; height: 100%; object-fit: cover; }
.book-list { list-style: none; margin: 0 0 24px; padding: 0; }
.book-list li { padding: 14px 0; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; gap: 16px; }
.book-list li span { color: var(--muted); font-size: 14.5px; white-space: nowrap; }

/* ── Anlässe-Seite ── */
.occasion { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; padding: 64px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 90px; }
.occasion:last-child { border-bottom: 0; }
.occasion h2 { font-size: clamp(1.6rem, 3vw, 2.15rem); margin-bottom: 18px; }
.occasion-main p { color: var(--ink-2); }
.howto { background: var(--paper); border-radius: 8px; padding: 30px 30px 18px; align-self: start; }
.howto h3 { font-size: 15px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin-bottom: 16px; }
.meta-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 22px; }
.meta-row span { font-size: 13.5px; background: var(--blue-soft); color: var(--blue-dark); padding: 5px 11px; border-radius: 999px; font-weight: 700; }

/* ── Ratgeber ── */
.article { padding: 64px 0 40px; }
.article-grid { display: grid; grid-template-columns: 240px 1fr; gap: 64px; align-items: start; }
.toc { position: sticky; top: 96px; font-size: 14.5px; }
.toc b { display: block; font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; }
.toc ol { margin: 0; padding: 0 0 0 18px; }
.toc li { margin-bottom: 8px; color: var(--muted); }
.toc a { color: var(--ink-2); text-decoration: none; }
.toc a:hover { color: var(--blue); }
.prose { max-width: 760px; min-width: 0; }
.article-grid > * { min-width: 0; }
.prose h2 { font-size: clamp(1.5rem, 2.8vw, 2rem); margin: 56px 0 18px; scroll-margin-top: 90px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin: 30px 0 12px; }
.prose p, .prose li { color: var(--ink-2); }
.summary { background: var(--blue-soft); border-left: 5px solid var(--blue); border-radius: 0 8px 8px 0; padding: 26px 28px 12px; margin-bottom: 8px; }
.summary b.t { display: block; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--blue); margin-bottom: 10px; }
.summary p { color: var(--ink); }
.tbl-wrap { overflow-x: auto; margin: 22px 0 26px; border: 1px solid var(--line); border-radius: 8px; }
table { border-collapse: collapse; width: 100%; font-size: 15.5px; min-width: 560px; }
th, td { text-align: left; vertical-align: top; padding: 14px 16px; border-bottom: 1px solid var(--line); }
th { background: var(--paper); font-size: 13px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
tr:last-child td { border-bottom: 0; }
td:first-child { font-weight: 700; color: var(--ink); white-space: nowrap; }
.note { background: var(--paper); border-radius: 8px; padding: 22px 24px 8px; margin: 22px 0; }
.checklist { border: 2px solid var(--blue); border-radius: 8px; padding: 30px 30px 16px; margin-top: 18px; }
.checklist h3 { margin-top: 26px; font-size: 1.05rem; color: var(--blue); }
.checklist h3:first-of-type { margin-top: 0; }
.checklist ul { list-style: none; padding: 0; margin: 0 0 8px; }
.checklist li { position: relative; padding-left: 34px; margin-bottom: 10px; }
.checklist li::before { content: ""; position: absolute; left: 0; top: 3px; width: 18px; height: 18px; border: 2px solid var(--blue); border-radius: 3px; }
.print-btn { font: inherit; cursor: pointer; }
.author { display: flex; gap: 22px; align-items: center; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 26px 0; margin-top: 56px; }
.author-img { width: 84px; height: 84px; border-radius: 50%; overflow: hidden; flex-shrink: 0; background: #dfe5ef; }
.author-img img { width: 100%; height: 100%; object-fit: cover; object-position: center 12%; }
.author p { margin: 0; font-size: 15.5px; }
.updated { font-size: 14px; color: var(--muted); margin-top: 18px; }

/* ── Footer ── */
.site-footer { background: var(--ink); color: rgba(255,255,255,.7); padding: 64px 0 32px; font-size: 15px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.foot-brand { color: #fff; font-weight: 700; font-size: 18px; margin-bottom: 12px; }
.site-footer h4 { margin: 0 0 14px; font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: rgba(255,255,255,.45); }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 9px; }
.site-footer a { text-decoration: none; color: rgba(255,255,255,.78); }
.site-footer a:hover { color: #fff; }
.foot-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 24px; font-size: 13.5px; color: rgba(255,255,255,.45); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }

/* ── Responsive ── */
@media (max-width: 1080px) {
  .tiles { grid-template-columns: repeat(2, 1fr); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  :root { --gutter: 16px; }
  body { font-size: 16.5px; }
  section { padding: 64px 0; }
  .menu-btn { display: block; }
  .nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--line); flex-direction: column; align-items: stretch; padding: 10px 16px 18px; gap: 2px; box-shadow: 0 12px 24px rgba(16,24,40,.08); }
  .nav.open { display: flex; }
  .nav a { padding: 12px 10px; font-size: 16px; }
  .nav .nav-cta { margin: 10px 0 0; text-align: center; justify-content: center; }
  .hero { padding: 40px 0 56px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 36px; }
  .hero-figure { aspect-ratio: 4 / 3; order: -1; }
  .hero-figure img { object-position: center 12%; }
  .hero-figure figcaption { padding: 60px 20px 18px; }
  .hero-figure blockquote { font-size: .95rem; }
  .stats { grid-template-columns: repeat(2, 1fr); row-gap: 22px; }
  .hero-actions .btn { flex: 1 1 100%; justify-content: center; }
  .clients .wrap { flex-direction: column; align-items: flex-start; gap: 12px; }
  .clients ul { gap: 8px 20px; }
  .clients li { font-size: 15px; }
  .cols-2, .cards, .quotes, .feature, .facts, .topic-grid, .occasion, .books, .article-grid { grid-template-columns: 1fr; }
  .cols-2 { gap: 0; }
  .feature, .occasion, .books { gap: 32px; }
  .topic { grid-template-columns: 1fr; gap: 12px; padding: 48px 0; }
  .topic-side { display: flex; align-items: baseline; gap: 14px; }
  .topic-side .n { font-size: 2.6rem; }
  .topic-side .tag { margin: 0; }
  .occasion { padding: 48px 0; }
  .books-img { max-width: 280px; }
  .toc { position: static; background: var(--paper); border-radius: 8px; padding: 20px 22px; }
  .article-grid { gap: 32px; }
  .cta-band { padding: 64px 0; }
  .cta-band .wrap { grid-template-columns: 1fr; gap: 28px; }
  .cta-band .actions { justify-content: flex-start; }
  .cta-band .btn { flex: 1 1 100%; justify-content: center; }
  .foot-grid { grid-template-columns: 1fr; gap: 28px; }
  .book-list li { flex-direction: column; gap: 2px; }
}
@media (max-width: 560px) {
  .tiles { grid-template-columns: 1fr; }
  .stat b { font-size: 1.6rem; }
  .fact { padding: 26px 22px; }
  .faq details p { padding-right: 0; }
  .author { flex-direction: column; align-items: flex-start; }
}

/* ── Druck (Checkliste) ── */
@media print {
  .site-header, .site-footer, .cta-band, .toc, .page-hero .lead, .print-btn, .author, .no-print { display: none !important; }
  body { font-size: 12pt; color: #000; }
  .article-grid { display: block; }
  .prose h2 { break-after: avoid; }
  .checklist { break-inside: avoid; }
  a { text-decoration: none; }
}