:root {
  --forest: #102b27;
  --forest-2: #1c443c;
  --forest-3: #2b5b51;
  --terracotta: #a3624f;
  --copper: #c7a16a;
  --sand: #e7dac7;
  --ivory: #faf6ef;
  --panel: #fffdf9;
  --white: #ffffff;
  --ink: #1a2321;
  --muted: #5f6d67;
  --line: rgba(16, 43, 39, 0.12);
  --shadow: 0 24px 70px rgba(16, 43, 39, 0.10);
  --shadow-soft: 0 12px 30px rgba(16, 43, 39, 0.08);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  background:
    radial-gradient(circle at top left, rgba(199,161,106,.11), transparent 25%),
    radial-gradient(circle at bottom right, rgba(16,43,39,.07), transparent 24%),
    linear-gradient(180deg, #fdfbf7 0%, var(--ivory) 44%, #f7f1e7 100%);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea, select { font: inherit; }
.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }

.site-header {
  position: sticky; top: 0; z-index: 60; backdrop-filter: blur(18px);
  background: rgba(250,246,239,.86); border-bottom: 1px solid rgba(16,43,39,.08);
  box-shadow: 0 10px 30px rgba(16,43,39,.06);
}
.nav { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; min-width: 220px; }
.brand-logo { width: 310px; height: auto; display: block; }
.site-header .nav-links { display: flex; align-items: center; gap: 24px; font-size: 14px; }
.site-header .nav-links a { color: #31403b; font-weight: 650; position: relative; padding-bottom: 4px; }
.site-header .nav-links a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--copper), transparent);
  transform: scaleX(0); transition: transform .22s ease;
}
.site-header .nav-links a:hover::after, .site-header .nav-links a.active::after { transform: scaleX(1); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.lang-switch {
  display: inline-flex; overflow: hidden; border-radius: 999px;
  border: 1px solid rgba(16,43,39,.10); background: rgba(255,255,255,.84); box-shadow: var(--shadow-soft);
}
.lang-switch button { border: 0; padding: 8px 11px; background: transparent; color: var(--muted); cursor: pointer; font-weight: 750; font-size: 12px; }
.lang-switch button.active { background: linear-gradient(135deg, var(--forest), var(--forest-2)); color: white; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 52px;
  padding: 0 24px; border-radius: 999px; border: 1px solid transparent;
  font-weight: 750; cursor: pointer; letter-spacing: .02em;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: linear-gradient(135deg, var(--forest), var(--forest-2)); color: white; box-shadow: 0 14px 30px rgba(16,43,39,.18); }
.btn-primary:hover { background: linear-gradient(135deg, var(--forest-2), var(--forest-3)); box-shadow: 0 18px 34px rgba(16,43,39,.22); }
.btn-secondary { border-color: rgba(16,43,39,.18); background: rgba(255,255,255,.72); color: var(--forest); box-shadow: var(--shadow-soft); }
.btn-light { background: white; color: var(--forest); box-shadow: 0 14px 30px rgba(0,0,0,.12); }
.mobile-toggle {
  display: none; width: 44px; height: 44px; border-radius: 14px;
  border: 1px solid rgba(16,43,39,.12); background: rgba(255,255,255,.86); box-shadow: var(--shadow-soft); cursor: pointer;
}

h1, h2, h3 { margin: 0; color: var(--forest); font-family: Georgia, "Times New Roman", serif; line-height: 1.07; letter-spacing: -.025em; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px; margin-bottom: 20px;
  color: var(--terracotta); font-size: 12px; font-weight: 850; text-transform: uppercase; letter-spacing: .22em;
}
.eyebrow::before { content: ""; width: 34px; height: 2px; background: currentColor; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.section-head { display: grid; grid-template-columns: .9fr 1.1fr; gap: 60px; align-items: end; margin-bottom: 44px; }
.section-head.compact { grid-template-columns: 1fr auto; align-items: end; }
.section-head h2 { font-size: clamp(38px, 4.8vw, 60px); }
.section-head p { margin: 0; color: var(--muted); font-size: 17px; line-height: 1.8; }
.text-link, .article-link { color: var(--terracotta); font-weight: 800; }

[data-lang] { display: none; }
[data-lang].visible { display: inline; }
.block[data-lang].visible { display: block; }

.wissen-hero { position: relative; overflow: hidden; padding: 92px 0 86px; }
.wissen-hero::before {
  content: ""; position: absolute; width: 680px; height: 680px; border-radius: 50%;
  right: -210px; top: -260px; background: radial-gradient(circle, rgba(199,161,106,.25), transparent 68%);
}
.wissen-hero::after {
  content: ""; position: absolute; width: 520px; height: 520px; border-radius: 50%;
  left: -280px; bottom: -320px; background: radial-gradient(circle, rgba(16,43,39,.09), transparent 70%);
}
.wissen-hero-grid { display: grid; grid-template-columns: minmax(0,1.08fr) minmax(360px,.92fr); gap: 64px; align-items: center; position: relative; z-index: 2; }
.wissen-hero h1 { max-width: 760px; font-size: clamp(52px, 6.4vw, 82px); }
.wissen-hero .hero-lead { margin: 28px 0 34px; max-width: 730px; color: #46544f; font-size: clamp(18px, 2vw, 22px); line-height: 1.78; }
.wissen-promise {
  min-height: 500px; padding: 42px; border-radius: 36px; color: white; position: relative; overflow: hidden;
  display: flex; flex-direction: column; justify-content: space-between;
  background: radial-gradient(circle at top right, rgba(199,161,106,.22), transparent 28%), linear-gradient(155deg, #102b27, #173732 58%, #0a211e);
  border: 1px solid rgba(255,255,255,.11); box-shadow: 0 36px 86px rgba(16,43,39,.24);
}
.wissen-promise::before { content: ""; position: absolute; inset: 22px; border: 1px solid rgba(199,161,106,.30); border-radius: 26px; pointer-events: none; }
.wissen-promise::after { content: "W"; position: absolute; right: -22px; bottom: -100px; font: 700 320px/1 Georgia, serif; color: rgba(255,255,255,.035); }
.wissen-promise > * { position: relative; z-index: 2; }
.wissen-promise-label { color: #d9e5e1; font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .2em; }
.wissen-promise h2 { color: white; font-size: clamp(38px, 4.2vw, 56px); margin: 22px 0 36px; }
.wissen-promise-list { display: grid; gap: 12px; }
.wissen-promise-list div { display: flex; gap: 12px; align-items: center; padding: 14px 15px; border-radius: 15px; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.10); color: #dbe6e2; }
.wissen-promise-list strong { color: var(--copper); }

.wissen-topics { padding: 96px 0; background: rgba(255,255,255,.70); border-block: 1px solid var(--line); }
.topic-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.topic-card {
  position: relative; min-height: 250px; padding: 28px; border-radius: 26px; overflow: hidden;
  background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(251,247,240,.95));
  border: 1px solid rgba(16,43,39,.09); box-shadow: var(--shadow-soft);
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.topic-card:hover, .topic-card.active { transform: translateY(-5px); border-color: rgba(199,161,106,.55); box-shadow: var(--shadow); }
.topic-number { color: var(--terracotta); font-size: 12px; font-weight: 850; letter-spacing: .2em; }
.topic-card h3 { font-size: 27px; margin: 18px 0 12px; max-width: 270px; }
.topic-card p { margin: 0; color: var(--muted); line-height: 1.72; font-size: 15px; max-width: 290px; }
.topic-arrow { position: absolute; right: 22px; bottom: 18px; width: 38px; height: 38px; display: grid; place-items: center; border-radius: 50%; color: var(--forest); background: rgba(199,161,106,.16); }
.topic-card::after { content: ""; position: absolute; left: 28px; right: 28px; bottom: 0; height: 2px; background: linear-gradient(90deg, transparent, var(--copper), transparent); }

.wissen-articles { padding: 104px 0; scroll-margin-top: 120px; }
.article-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; }
.article-card { min-width: 0; border-radius: 28px; overflow: hidden; background: rgba(255,255,255,.94); border: 1px solid rgba(16,43,39,.09); box-shadow: var(--shadow-soft); transition: transform .22s ease, box-shadow .22s ease; }
.article-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.article-card-featured { grid-column: span 2; display: grid; grid-template-columns: minmax(0,.95fr) minmax(0,1.05fr); }
.article-visual { min-height: 220px; position: relative; display: grid; place-items: center; overflow: hidden; background: radial-gradient(circle at top right, rgba(199,161,106,.32), transparent 33%), linear-gradient(145deg, #183a34, #0b2521); }
.article-visual img { width: 100%; height: 100%; object-fit: cover; }
.article-monogram { color: rgba(255,255,255,.92); font: 700 64px/1 Georgia, serif; letter-spacing: -.06em; }
.article-visual-line { position: absolute; width: 120px; height: 1px; bottom: 35%; background: var(--copper); }
.article-card-body { padding: 28px; display: flex; flex-direction: column; align-items: flex-start; }
.article-meta { display: flex; gap: 9px 14px; flex-wrap: wrap; color: #75817c; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }
.article-meta span:first-child { color: var(--terracotta); }
.article-card h3 { font-size: clamp(26px, 2.7vw, 35px); margin: 19px 0 14px; overflow-wrap: anywhere; }
.article-card p { margin: 0 0 22px; color: var(--muted); line-height: 1.75; }
.article-card .article-link { margin-top: auto; }
.wissen-empty { display: grid; grid-template-columns: auto 1fr; gap: 22px; align-items: center; padding: 36px; border-radius: 28px; background: rgba(255,255,255,.9); border: 1px solid var(--line); box-shadow: var(--shadow-soft); }
.wissen-empty-icon { width: 64px; height: 64px; display: grid; place-items: center; border-radius: 20px; background: var(--forest); color: var(--copper); font-size: 28px; }
.wissen-empty h3 { font-size: 29px; margin-bottom: 8px; }
.wissen-empty p { margin: 0; color: var(--muted); }
.navigation.pagination { margin-top: 42px; }
.navigation.pagination .nav-links { display: flex; gap: 8px; }
.page-numbers { display: inline-grid; min-width: 42px; height: 42px; place-items: center; border-radius: 12px; border: 1px solid var(--line); background: white; }
.page-numbers.current { background: var(--forest); color: white; }

.wissen-cta { padding: 28px 0 96px; }
.wissen-cta-card { display: grid; grid-template-columns: 1.2fr auto; gap: 40px; align-items: center; padding: 48px; border-radius: 34px; color: white; background: radial-gradient(circle at top right, rgba(199,161,106,.17), transparent 20%), linear-gradient(135deg, #102b27, #1c443c); box-shadow: 0 30px 70px rgba(16,43,39,.22); }
.wissen-cta-card .eyebrow { color: #dfb982; }
.wissen-cta-card h2 { color: white; font-size: clamp(38px, 4.6vw, 58px); margin-bottom: 14px; }
.wissen-cta-card p { margin: 0; max-width: 760px; color: #d5e1dd; font-size: 18px; }

/* Single article */
.article-hero { padding: 72px 0 66px; position: relative; overflow: hidden; }
.article-hero::after { content: ""; position: absolute; width: 620px; height: 620px; border-radius: 50%; right: -230px; top: -300px; background: radial-gradient(circle, rgba(199,161,106,.25), transparent 68%); }
.article-hero-inner { position: relative; z-index: 2; max-width: 980px; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 34px; color: #71807a; font-size: 13px; }
.breadcrumbs a:hover { color: var(--terracotta); }
.article-hero h1 { max-width: 960px; font-size: clamp(48px, 6.3vw, 78px); overflow-wrap: anywhere; }
.article-deck { max-width: 830px; margin: 26px 0 28px; color: #46544f; font-size: clamp(19px, 2.1vw, 23px); line-height: 1.75; }
.article-byline { display: flex; flex-wrap: wrap; gap: 8px 12px; color: #71807a; font-size: 14px; }
.article-featured-image { margin-top: 8px; }
.article-featured-image img { width: 100%; max-height: 620px; object-fit: cover; border-radius: 32px; box-shadow: var(--shadow); }
.article-layout { display: grid; grid-template-columns: 260px minmax(0,760px); justify-content: center; gap: 64px; padding-top: 72px; }
.article-sidebar { min-width: 0; }
.article-sidebar-card { position: sticky; top: 120px; padding: 24px; border-radius: 22px; background: rgba(255,255,255,.9); border: 1px solid var(--line); box-shadow: var(--shadow-soft); }
.article-sidebar-card strong { color: var(--forest); }
.article-sidebar-card p { color: var(--muted); font-size: 14px; line-height: 1.7; }
.article-sidebar-card a { color: var(--terracotta); font-weight: 800; }
.article-content-wrap { min-width: 0; }
.article-copy { color: #303b37; font-size: 18px; line-height: 1.88; }
.article-copy > :first-child { margin-top: 0; }
.article-copy h2 { margin: 52px 0 18px; font-size: clamp(31px, 3.6vw, 44px); }
.article-copy h3 { margin: 36px 0 14px; font-size: 28px; }
.article-copy p { margin: 0 0 24px; }
.article-copy ul, .article-copy ol { margin: 0 0 28px; padding-left: 26px; }
.article-copy li { margin: 8px 0; }
.article-copy strong { color: var(--forest); }
.article-copy blockquote { margin: 34px 0; padding: 24px 28px; border-left: 3px solid var(--copper); background: rgba(255,255,255,.7); border-radius: 0 18px 18px 0; }
.article-note { margin-top: 42px; padding: 24px 26px; border-radius: 20px; background: rgba(199,161,106,.13); border: 1px solid rgba(199,161,106,.30); }
.article-note strong { color: var(--forest); }
.article-note p { margin: 8px 0 0; color: #56645f; }
.article-author-box { display: grid; grid-template-columns: auto 1fr; gap: 20px; align-items: center; margin-top: 38px; padding: 28px; border-radius: 24px; background: linear-gradient(145deg, #102b27, #1b433b); color: white; }
.author-mark { width: 64px; height: 64px; display: grid; place-items: center; border-radius: 50%; border: 1px solid rgba(199,161,106,.6); color: var(--copper); font: 700 24px/1 Georgia, serif; }
.author-label { color: #b7c9c3; font-size: 12px; text-transform: uppercase; letter-spacing: .13em; }
.article-author-box h3 { color: white; font-size: 26px; margin: 3px 0 8px; }
.article-author-box p { margin: 0; color: #cfddd8; line-height: 1.7; }
.related-articles { padding: 100px 0 72px; }
.related-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; }
.related-card { padding: 26px; border-radius: 24px; background: rgba(255,255,255,.92); border: 1px solid var(--line); box-shadow: var(--shadow-soft); }
.related-date { color: #71807a; font-size: 12px; }
.related-card h3 { font-size: 26px; margin: 15px 0 22px; overflow-wrap: anywhere; }

footer { margin-top: 0; padding: 50px 0; color: #d9e4e0; background: radial-gradient(circle at top right, rgba(199,161,106,.14), transparent 16%), linear-gradient(180deg, #0f2925, #091b19); }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 32px; }
footer h3 { color: white; font-size: 24px; margin: 0 0 12px; }
footer p, footer a { color: #aebfba; font-size: 14px; }
.footer-links { display: grid; gap: 8px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; margin-top: 30px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.1); color: #91a59f; font-size: 13px; }

@media (max-width: 1050px) {
  .wissen-hero-grid, .section-head, .wissen-cta-card, .article-layout { grid-template-columns: 1fr; }
  .wissen-promise { min-height: 440px; }
  .topic-grid, .article-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .article-card-featured { grid-column: auto; display: block; }
  .article-sidebar { display: none; }
  .article-content-wrap { max-width: 780px; margin-inline: auto; }
  .related-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 700px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .wissen-hero { padding: 58px 0 66px; }
  .wissen-hero-grid { gap: 36px; }
  .wissen-promise { min-height: 430px; padding: 28px; border-radius: 28px; }
  .wissen-promise::before { inset: 14px; border-radius: 21px; }
  .wissen-topics, .wissen-articles { padding: 72px 0; }
  .topic-grid, .article-grid, .related-grid, .footer-grid { grid-template-columns: 1fr; }
  .topic-card { min-height: 220px; }
  .section-head { gap: 22px; }
  .section-head.compact { grid-template-columns: 1fr; }
  .article-hero { padding: 48px 0 52px; }
  .article-layout { padding-top: 48px; }
  .article-copy { font-size: 17px; line-height: 1.82; }
  .article-author-box { grid-template-columns: 1fr; }
  .wissen-cta { padding-bottom: 70px; }
  .wissen-cta-card { padding: 30px; border-radius: 26px; }
  .wissen-cta-card .btn { width: 100%; }
  .wissen-empty { grid-template-columns: 1fr; padding: 28px; }
  .hero-actions .btn { width: 100%; }
}

/* v1.1.1: refined responsive typography for the Wissen area. */
.wissen-main { overflow-x: clip; }
.wissen-hero-copy { min-width: 0; }

@media (max-width: 700px) {
  .wissen-hero { padding: 44px 0 58px; }
  .wissen-hero h1 {
    max-width: 100%;
    font-size: clamp(36px, 10.5vw, 46px);
    line-height: 1.04;
    letter-spacing: -.03em;
    overflow-wrap: break-word;
    hyphens: auto;
  }
  .wissen-hero .hero-lead {
    margin: 22px 0 28px;
    font-size: 17px;
    line-height: 1.68;
  }
  .wissen-promise h2 { font-size: clamp(32px, 9.5vw, 42px); }
  .article-hero h1 {
    font-size: clamp(36px, 10.5vw, 48px);
    line-height: 1.05;
    overflow-wrap: break-word;
    hyphens: auto;
  }
  .section-head h2,
  .wissen-cta-card h2 { font-size: clamp(32px, 9vw, 42px); }
}

@media (max-width: 360px) {
  .wissen-hero h1 { font-size: clamp(34px, 11vw, 39px); }
  .wissen-hero .hero-lead { font-size: 16.5px; }
  .eyebrow { font-size: 10px; letter-spacing: .18em; }
}

/* v1.2.0: ingredient reference entry card within Salon Business Wissen. */
.ingredient-feature-card { display: grid; grid-template-columns: minmax(0,1.1fr) auto; gap: 36px; align-items: center; margin-bottom: 24px; padding: 32px; border-radius: 28px; color: white; background: radial-gradient(circle at 88% 10%,rgba(199,161,106,.23),transparent 30%),linear-gradient(140deg,#102b27,#1b433b); box-shadow: 0 22px 55px rgba(16,43,39,.18); }
.ingredient-feature-card h3 { margin: 10px 0 8px; color: white; font-size: clamp(30px,3.5vw,45px); overflow-wrap: anywhere; }
.ingredient-feature-card p { margin: 0; max-width: 760px; color: #d0ddd9; line-height: 1.65; }
.ingredient-feature-card .btn { white-space: nowrap; }
@media (max-width: 780px) {
  .ingredient-feature-card { grid-template-columns: 1fr; padding: 27px; }
  .ingredient-feature-card .btn { width: 100%; }
}


/* v1.3.0: Knowledge tools overview cards. */
.knowledge-tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 18px;
  margin-bottom: 26px;
}
.knowledge-tool-card {
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 26px;
  min-width: 0;
  padding: 30px;
  border-radius: 28px;
  color: white;
  background: radial-gradient(circle at 88% 10%,rgba(199,161,106,.23),transparent 30%),linear-gradient(140deg,#102b27,#1b433b);
  box-shadow: 0 22px 55px rgba(16,43,39,.18);
  overflow: hidden;
  position: relative;
}
.knowledge-tool-card::after {
  content: "";
  position: absolute;
  right: -52px;
  bottom: -52px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.10);
  pointer-events: none;
}
.knowledge-tool-card.ingredient-card {
  background: radial-gradient(circle at 88% 10%,rgba(199,161,106,.20),transparent 30%),linear-gradient(140deg,#173732,#254d45);
}
.knowledge-tool-card h3 {
  margin: 10px 0 8px;
  color: white;
  font-size: clamp(27px,3vw,41px);
  overflow-wrap: anywhere;
}
.knowledge-tool-card p {
  margin: 0;
  color: #d0ddd9;
  line-height: 1.65;
}
.knowledge-tool-card .btn {
  width: fit-content;
  white-space: nowrap;
  position: relative;
  z-index: 1;
}
@media (max-width: 850px) {
  .knowledge-tool-grid { grid-template-columns: 1fr; }
  .knowledge-tool-card { padding: 27px; }
  .knowledge-tool-card .btn { width: 100%; }
}