/* rs Software – Entwurf 3 „Offizin“
   Idee: die Seite als gut gesetztes Buch. Pergamentton, Druckerschwarz mit
   warmem Braunstich, Rubrikrot wie die roten Auszeichnungen alter Drucke und
   feine Doppellinien in Altgold. Schrift: Palatino, eine Antiqua nach
   Vorbildern der Renaissance. Initialen, Kapitälchen und römische Ziffern.
   Technik: CSS Grid, fließende Schriftgrößen, Papierkorn als eingebettetes SVG.
   Keine externen Schriften (DSGVO) – nur Schriften, die am Gerät vorhanden sind. */

:root {
  --ink: #261c14;
  --muted: #5f4f40;
  --paper: #f3ecdb;
  --paper-light: #faf5e8;
  --paper-dark: #e9dfc8;
  --line: #cfc1a3;
  --gold: #a07a32;
  --red: #8a1c1c;           /* Rubrikrot */
  --red-strong: #6d1414;
  --dark: #2b2019;

  --max: 1140px;
  --gutter: clamp(18px, 4vw, 40px);

  --font: "Palatino Linotype", Palatino, "Book Antiqua", "Iowan Old Style", "URW Palladio L", "Noto Serif", Georgia, serif;
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .35 0 0 0 0 .25 0 0 0 0 .12 0 0 0 .1 0'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)'/%3E%3C/svg%3E");
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }

body {
  margin: 0;
  background: var(--paper) var(--grain);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.15rem;
  line-height: 1.65;
  font-variant-numeric: oldstyle-nums;
}
img, svg { max-width: 100%; height: auto; }
a { color: var(--red); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--ink); }
:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; }

h1, h2, h3, h4 { font-family: var(--font); font-weight: 400; line-height: 1.15; margin: 0 0 .5em; text-wrap: balance; }
h1 { font-size: clamp(2.5rem, 5.6vw, 4.2rem); letter-spacing: -.01em; }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.7rem); }
h3 { font-size: 1.4rem; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }
.narrow { max-width: 820px; }

.skip-link { position: absolute; left: -9999px; top: 0; background: var(--ink); color: var(--paper-light); padding: 10px 16px; z-index: 100; }
.skip-link:focus { left: 8px; top: 8px; }

/* Kapitälchen-Zeile über Überschriften */
.eyebrow {
  display: flex; align-items: center; gap: 12px;
  font-size: .9rem; letter-spacing: .2em; text-transform: uppercase;
  color: var(--red); margin: 0 0 18px;
}
.mark { width: 8px; height: 8px; background: var(--red); transform: rotate(45deg); flex: none; }

/* ------------------------------------------------------------ Kopfbereich */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--paper) var(--grain); border-bottom: 3px double var(--ink); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 76px; }

.brand { display: flex; align-items: center; gap: 14px; color: var(--ink); text-decoration: none; }
.brand:hover { color: var(--ink); }
.brand-mark { width: 46px; height: 46px; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; white-space: nowrap; }
.brand-name { font-size: 1.5rem; letter-spacing: .01em; }
.brand-sub { font-size: .8rem; font-style: italic; color: var(--muted); }

.nav-toggle {
  display: none; align-items: center; gap: 8px; min-height: 46px; padding: 8px 14px;
  background: none; border: 1px solid var(--ink); border-radius: 2px;
  font: inherit; color: var(--ink); cursor: pointer;
}
.nav-toggle svg { width: 22px; height: 22px; }

.main-nav > ul { list-style: none; margin: 0; padding: 0; display: flex; align-items: center; gap: 2px; }
.main-nav > ul > li > a, .nav-drop-btn {
  display: inline-flex; align-items: center; gap: 6px; min-height: 46px; padding: 8px 14px;
  background: none; border: 0; font: inherit; font-size: .92rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink); text-decoration: none; cursor: pointer;
}
.main-nav > ul > li > a:hover, .nav-drop-btn:hover { color: var(--red); }
.main-nav a[aria-current="page"] { color: var(--red); text-decoration: underline; text-underline-offset: 8px; }
.nav-drop-btn svg { width: 13px; height: 13px; transition: transform .15s; }
.has-drop.open .nav-drop-btn svg { transform: rotate(180deg); }
.main-nav .nav-cta { background: var(--red); color: var(--paper-light); border-radius: 2px; padding-inline: 20px; margin-left: 10px; }
.main-nav .nav-cta:hover { background: var(--red-strong); color: #fff; }

.has-drop { position: relative; }
.drop {
  display: none; position: absolute; top: calc(100% + 16px); left: -12px; width: 560px;
  list-style: none; margin: 0; padding: 10px; grid-template-columns: 1fr 1fr; gap: 2px;
  background: var(--paper-light); border: 1px solid var(--ink); outline: 1px solid var(--gold); outline-offset: 3px;
  box-shadow: 0 18px 40px rgba(38, 28, 20, .22);
}
.has-drop.open .drop { display: grid; }
.drop a { display: flex; align-items: center; gap: 12px; padding: 10px; color: var(--ink); text-decoration: none; }
.drop a:hover, .drop a[aria-current="page"] { background: var(--paper-dark); }
.drop .ico { width: 40px; height: 40px; flex: none; }
.drop strong { display: block; font-weight: 400; font-size: 1.2rem; line-height: 1.2; }
.drop small { display: block; color: var(--muted); font-style: italic; font-size: .9rem; line-height: 1.3; }

@media (max-width: 1080px) {
  .nav-toggle { display: inline-flex; }
  .main-nav { display: none; position: absolute; left: 0; right: 0; top: 100%; background: var(--paper) var(--grain); border-bottom: 3px double var(--ink); padding: 8px var(--gutter) 22px; max-height: calc(100vh - 80px); overflow-y: auto; }
  .main-nav.open { display: block; }
  .main-nav > ul { flex-direction: column; align-items: stretch; gap: 0; }
  .main-nav > ul > li > a, .nav-drop-btn { width: 100%; justify-content: space-between; border-bottom: 1px solid var(--line); padding-inline: 0; }
  .main-nav .nav-cta { justify-content: center; margin: 18px 0 0; border-bottom: 0; }
  .drop { position: static; width: auto; grid-template-columns: 1fr; border: 0; outline: 0; box-shadow: none; padding: 4px 0 8px; background: none; }
}
@media (max-width: 440px) { .brand-sub { display: none; } }

/* ------------------------------------------------------------ Schaltflächen */
.btn {
  display: inline-flex; align-items: center; gap: 10px; min-height: 52px; padding: 12px 26px;
  border: 1px solid var(--ink); border-radius: 2px;
  font-size: .95rem; letter-spacing: .14em; text-transform: uppercase; text-decoration: none;
  color: var(--ink); background: transparent; transition: background .2s, color .2s;
}
.btn svg { width: 16px; height: 16px; }
.btn:hover { background: var(--ink); color: var(--paper-light); }
.btn-primary { background: var(--red); border-color: var(--red); color: var(--paper-light); }
.btn-primary:hover { background: var(--red-strong); border-color: var(--red-strong); color: #fff; }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }

/* ------------------------------------------------------------ Startseite: Einstieg */
.hero { padding: clamp(44px, 7vw, 96px) 0 clamp(44px, 6vw, 80px); }
.hero > .container { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.hero h1 em { font-style: italic; color: var(--red); }
.hero .lead { font-size: 1.25rem; max-width: 32em; }
.hero-art { background: var(--paper-light); border: 1px solid var(--ink); outline: 1px solid var(--gold); outline-offset: 5px; padding: clamp(10px, 2vw, 22px); margin: 6px; box-shadow: 0 24px 50px -20px rgba(38, 28, 20, .45); }
.hero-art svg { display: block; width: 100%; }
@media (max-width: 940px) { .hero > .container { grid-template-columns: 1fr; } }

/* Kennzahlen */
.facts { display: grid; grid-template-columns: repeat(4, 1fr); border-block: 3px double var(--ink); text-align: center; }
.fact { padding: 26px 18px; }
.fact + .fact { border-left: 1px solid var(--line); }
.fact b { display: block; font-size: 1.75rem; font-weight: 400; line-height: 1.15; }
.fact span { display: block; color: var(--muted); font-style: italic; font-size: 1rem; line-height: 1.4; margin-top: 6px; }
@media (max-width: 860px) {
  .facts { grid-template-columns: 1fr 1fr; }
  .fact:nth-child(3) { border-left: 0; }
  .fact:nth-child(n+3) { border-top: 1px solid var(--line); }
}

/* ------------------------------------------------------------ Abschnitte */
.section { padding: clamp(60px, 8vw, 108px) 0; }
.section-alt { background: var(--paper-light) var(--grain); border-block: 1px solid var(--line); }
.section-head { max-width: 760px; margin: 0 auto clamp(30px, 4vw, 52px); text-align: center; }
.section-head .eyebrow { justify-content: center; }
.section-head h2::after { content: ""; display: block; width: 96px; margin: 22px auto 0; border-top: 3px double var(--gold); }
.section-head p:last-child { color: var(--muted); font-size: 1.18rem; margin: 0; }

/* Modulverzeichnis – wie ein Inhaltsverzeichnis */
.register { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--ink); }
.register li { border-bottom: 1px solid var(--line); }
.register li:last-child { border-bottom: 1px solid var(--ink); }
.register a {
  display: grid; grid-template-columns: 3rem 56px minmax(11rem, 16rem) minmax(0, 1fr) 28px;
  gap: 22px; align-items: center; padding: 24px 10px; color: var(--ink); text-decoration: none; transition: background .2s;
}
.register a:hover { background: var(--paper-light); }
.section-alt .register a:hover { background: var(--paper-dark); }
.register .no { font-size: 1.25rem; font-style: italic; color: var(--red); text-align: right; }
.register .ico { width: 56px; height: 56px; }
.register h3 { margin: 0; font-size: 1.75rem; display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.register .tag { color: var(--muted); font-style: italic; font-size: 1.02rem; }
.register p { margin: 0; color: var(--muted); font-size: 1.05rem; line-height: 1.5; }
.register .go { color: var(--red); }
.register .go svg { width: 24px; height: 24px; display: block; transition: transform .2s; }
.register a:hover .go svg { transform: translateX(5px); }
.badge { font-size: .7rem; letter-spacing: .16em; text-transform: uppercase; padding: 3px 8px 2px; border: 1px solid var(--red); color: var(--red); line-height: 1.3; }
.badge.core { border-color: var(--gold); color: #6f5218; }
@media (max-width: 860px) {
  .register a { grid-template-columns: 46px minmax(0, 1fr) 24px; gap: 4px 14px; align-items: start; padding: 20px 0; }
  .register .no { display: none; }
  .register .ico { width: 46px; height: 46px; grid-row: span 2; }
  .register p { grid-column: 2 / 3; }
  .register .go { grid-column: 3; grid-row: 1; align-self: center; }
  .register h3 { font-size: 1.5rem; }
}

/* Ablauf */
.flow { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(6, 1fr); counter-reset: schritt; border-top: 1px solid var(--ink); }
.flow li { counter-increment: schritt; position: relative; padding: 26px 14px 0; display: flex; flex-direction: column; gap: 6px; text-align: center; }
.flow li::before { content: ""; position: absolute; top: -6px; left: calc(50% - 5px); width: 10px; height: 10px; background: var(--red); transform: rotate(45deg); }
.flow li::after { content: counter(schritt, upper-roman) "."; font-style: italic; font-size: 1.05rem; color: var(--red); order: -1; }
.flow strong { font-size: 1.4rem; font-weight: 400; line-height: 1.15; }
.flow span { color: var(--muted); font-size: 1rem; line-height: 1.45; }
.flow .mod { font-size: .82rem; letter-spacing: .1em; text-transform: uppercase; font-style: normal; color: var(--ink); margin-top: 4px; }
@media (max-width: 940px) {
  .flow { grid-template-columns: 1fr; border-top: 0; border-left: 1px solid var(--ink); }
  .flow li { padding: 0 0 28px 26px; text-align: left; }
  .flow li:last-child { padding-bottom: 0; }
  .flow li::before { top: 9px; left: -6px; }
}

/* Neuerungen */
.news-grid { columns: 3 300px; column-gap: 48px; column-rule: 1px solid var(--line); }
.news { break-inside: avoid; margin: 0 0 34px; }
.news h3 { font-size: 1.1rem; letter-spacing: .14em; text-transform: uppercase; color: var(--red); border-bottom: 1px solid var(--ink); padding-bottom: 8px; margin-bottom: 8px; }
.news h3 a { color: inherit; }

.checks { list-style: none; margin: 0 0 1.2em; padding: 0; }
.checks li { position: relative; padding: 6px 0 6px 24px; line-height: 1.45; font-size: 1.05rem; }
.checks li::before { content: ""; position: absolute; left: 4px; top: .78em; width: 7px; height: 7px; background: var(--gold); transform: rotate(45deg); }

/* Werte */
.values { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--ink); }
.value { padding: 28px 22px 0; text-align: center; }
.value + .value { border-left: 1px solid var(--line); }
.value .num { display: block; font-size: 2rem; font-style: italic; line-height: 1; color: var(--red); margin-bottom: 12px; }
.value p { color: var(--muted); font-size: 1.05rem; margin: 0; }
@media (max-width: 900px) {
  .values { grid-template-columns: 1fr 1fr; }
  .value { padding: 26px 16px; border-bottom: 1px solid var(--line); }
  .value:nth-child(3) { border-left: 0; }
}
@media (max-width: 560px) {
  .values { grid-template-columns: 1fr; }
  .value + .value { border-left: 0; }
}

/* ------------------------------------------------------------ Unterseiten */
.page-head { padding: clamp(34px, 5vw, 64px) 0 clamp(30px, 4vw, 50px); border-bottom: 3px double var(--ink); }
.page-head > .container { display: flex; gap: 26px; align-items: flex-start; }
.page-head .ico { width: 78px; height: 78px; flex: none; margin-top: 34px; }
.page-head h1 { font-size: clamp(2.2rem, 4.6vw, 3.4rem); }
.page-head h1 .sub { font-style: italic; color: var(--red); }
.page-head p:last-child { font-size: 1.22rem; max-width: 44em; margin: 0; color: var(--muted); }
.crumbs { font-size: .95rem; font-style: italic; color: var(--muted); margin-bottom: 14px; }
.crumbs a { color: var(--muted); }
@media (max-width: 640px) { .page-head .ico { display: none; } }

.split { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: clamp(32px, 5vw, 76px); align-items: start; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }
@media (min-width: 901px) and (min-height: 760px) { .split > aside { position: sticky; top: 104px; } }

.prose h2 { font-size: clamp(1.6rem, 2.7vw, 2.05rem); margin-top: 1.8em; }
.prose h2::after { content: ""; display: block; width: 64px; margin-top: 14px; border-top: 3px double var(--gold); }
.prose h2:first-child { margin-top: 0; }
.prose > p { max-width: 42em; }
.prose > h2:first-child + p::first-letter { float: left; font-size: 3.7em; line-height: .82; padding: .06em .1em 0 0; color: var(--red); }

.aside-card { background: var(--paper-light); border: 1px solid var(--ink); outline: 1px solid var(--gold); outline-offset: 4px; padding: 24px; margin: 5px 5px 30px; }
.aside-card h3 { font-size: .9rem; letter-spacing: .18em; text-transform: uppercase; color: var(--red); margin-bottom: 14px; }
.rel { list-style: none; margin: 0; padding: 0; }
.rel li + li { border-top: 1px solid var(--line); }
.rel a { display: flex; align-items: center; gap: 12px; padding: 10px 0; color: var(--ink); text-decoration: none; font-size: 1.25rem; line-height: 1.2; }
.rel a:hover { color: var(--red); }
.rel .ico { width: 38px; height: 38px; flex: none; }
.rel small { display: block; font-style: italic; font-size: .9rem; color: var(--muted); }

.download { display: flex; align-items: center; gap: 14px; margin-top: 16px; padding: 12px 14px; border: 1px solid var(--line); background: var(--paper); color: var(--ink); text-decoration: none; }
.download:hover { border-color: var(--red); color: var(--ink); }
.download svg { width: 38px; height: 38px; flex: none; }
.download b { display: block; font-weight: 400; line-height: 1.25; }
.download small { color: var(--muted); font-style: italic; font-size: .9rem; }

.highlight-grid { list-style: none; margin: 0 0 1.4em; padding: 0; display: grid; grid-template-columns: 1fr 1fr; column-gap: 36px; }
.highlight-grid li { position: relative; padding: 8px 0 8px 24px; border-bottom: 1px solid var(--line); line-height: 1.4; font-size: 1.05rem; }
.highlight-grid li::before { content: ""; position: absolute; left: 4px; top: .95em; width: 7px; height: 7px; background: var(--gold); transform: rotate(45deg); }
@media (max-width: 620px) { .highlight-grid { grid-template-columns: 1fr; } }

.figure { margin: 34px 6px; }
.figure img { display: block; width: 100%; border: 1px solid var(--ink); outline: 1px solid var(--gold); outline-offset: 5px; background: #fff; }
.figure figcaption { font-size: 1rem; font-style: italic; color: var(--muted); margin-top: 18px; text-align: center; }

.tiles { list-style: none; margin: 0 0 1.4em; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.tiles li { border: 1px solid var(--ink); background: var(--paper-light); padding: 8px 16px; line-height: 1.3; }
.tiles small { display: block; font-style: italic; font-size: .85rem; color: var(--muted); }

.callout { margin: 38px 0 0; padding: 26px 30px; border-block: 3px double var(--ink); text-align: center; }
.callout p { margin: 0; font-style: italic; font-size: 1.4rem; line-height: 1.4; }

.defs { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); margin-bottom: 1.4em; }
.defs > div { padding: 16px 22px 16px 0; border-bottom: 1px solid var(--line); }
.defs > div:nth-child(even) { padding-left: 22px; border-left: 1px solid var(--line); }
.defs b { font-weight: 400; font-size: 1.25rem; }
.defs p { margin: 4px 0 0; color: var(--muted); font-size: 1.02rem; }
@media (max-width: 620px) { .defs { grid-template-columns: 1fr; } .defs > div:nth-child(even) { padding-left: 0; border-left: 0; } }

.timeline { list-style: none; margin: 0; padding: 0 0 0 20px; border-left: 1px solid var(--ink); }
.timeline li { position: relative; padding-bottom: 18px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before { content: ""; position: absolute; left: -25px; top: 9px; width: 9px; height: 9px; background: var(--red); transform: rotate(45deg); }
.timeline b { display: block; font-weight: 400; font-size: 1.3rem; }
.timeline span { color: var(--muted); font-size: 1rem; }

/* ------------------------------------------------------------ Kontakt */
.cta { background: var(--dark) var(--grain); color: var(--paper-light); padding: clamp(30px, 5vw, 64px); display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: clamp(26px, 4vw, 60px); align-items: center; outline: 1px solid var(--gold); outline-offset: -10px; }
.cta .eyebrow { color: #d9b56a; }
.cta .mark { background: #d9b56a; }
.cta h2 { color: var(--paper-light); }
.cta p { color: #dccfb6; margin: 0; }
.contact-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid rgba(217, 181, 106, .5); }
.contact-list li { border-bottom: 1px solid rgba(217, 181, 106, .5); }
.contact-list a, .contact-list div { display: flex; align-items: center; gap: 16px; padding: 16px 6px; color: var(--paper-light); text-decoration: none; font-size: 1.35rem; line-height: 1.25; overflow-wrap: anywhere; }
.contact-list a:hover { color: #f0d595; }
.contact-list svg { width: 26px; height: 26px; flex: none; color: #d9b56a; }
.contact-list small { display: block; font-size: .74rem; letter-spacing: .18em; text-transform: uppercase; color: #d9b56a; }
@media (max-width: 860px) { .cta { grid-template-columns: 1fr; } }

/* ------------------------------------------------------------ Rechtliches */
.legal h2 { font-size: 1.6rem; margin-top: 2em; }
.legal h2::after { content: ""; display: block; width: 64px; margin-top: 12px; border-top: 3px double var(--gold); }
.legal h2:first-child { margin-top: 0; }
.legal dl { display: grid; grid-template-columns: 230px minmax(0, 1fr); margin: 0; }
.legal dt, .legal dd { margin: 0; padding: 10px 0; border-bottom: 1px solid var(--line); }
.legal dt { font-style: italic; color: var(--muted); padding-right: 16px; }
.legal ul { padding-left: 1.2em; }
@media (max-width: 600px) {
  .legal dl { grid-template-columns: 1fr; }
  .legal dt { border-bottom: 0; padding-bottom: 0; }
  .legal dd { padding-top: 2px; }
}
.todo { background: #f2d98a; color: #4a3a00; padding: 1px 6px; }

/* ------------------------------------------------------------ Fußbereich */
.site-footer { background: var(--dark) var(--grain); color: #cdbfa6; margin-top: clamp(24px, 4vw, 48px); font-size: 1.02rem; border-top: 3px double var(--gold); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1.5fr 1.2fr 1fr; gap: 36px; padding-block: 58px 42px; }
.site-footer .brand, .site-footer .brand:hover { color: var(--paper-light); }
.site-footer .brand-sub { color: #b3a488; }
.site-footer address { font-style: normal; margin-top: 18px; line-height: 1.6; }
.site-footer h4 { font-size: .82rem; letter-spacing: .18em; text-transform: uppercase; color: #d9b56a; margin-bottom: 14px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 4px; }
.site-footer a { color: #efe6d2; text-decoration: none; display: inline-block; padding: 4px 0; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; padding-block: 20px; border-top: 1px solid #55463a; font-size: .95rem; font-style: italic; }
.footer-bottom nav { display: flex; gap: 22px; }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } }

@media print {
  .site-header, .site-footer, .cta, .btn-row, .skip-link { display: none !important; }
  body { background: #fff; font-size: 11pt; }
  .section { padding: 16pt 0; }
}