/* =========================================================
   Keck Stage – Hauptstylesheet
   Basiert 1:1 auf den HTML-Vorlagen Keck_Design_04_*.html
   ========================================================= */

/* ---------- Font ---------- */
@font-face {
    font-family: 'MaisonNeue';
    src: url('../fonts/MaisonNeue-Bold.woff2') format('woff2'),
         url('../fonts/MaisonNeue-Bold.woff') format('woff');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

/* ---------- Tokens (D4_*) ---------- */
:root {
    --keck-bg: #FFFFFF;
    --keck-ink: #0F0F0E;
    --keck-muted: rgba(15, 15, 14, 0.5);
    --keck-line: rgba(15, 15, 14, 0.12);

    --keck-yellow: #E8C441;
    --keck-blue-light: #CCE1F4;
    --keck-orange: #E07D4C;
    --keck-red: #ED4742;
    --keck-green: #317E6B;
    --keck-sky: #9DD3EE;
    --keck-green-soft: #D4E5DF;
    --keck-orange-soft: #F5D5C2;
    --keck-yellow-soft: #FBEDB1;

    --keck-surface-grey: #F2F2F0;
    --keck-surface-grey-2: #F7F7F5;

    --keck-font-display: 'MaisonNeue', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --keck-font-body: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --keck-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    --keck-font-serif: Georgia, 'Times New Roman', serif;

    --container-pad: 64px;
    --hl-height: 45%;

    --z-cursor: 9999;
    --z-nav: 100;
    --z-modal: 200;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
    margin: 0;
    padding: 0;
    background: var(--keck-bg);
    color: var(--keck-ink);
    font-family: var(--keck-font-body);
    font-size: 17px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}
img, picture, video, svg { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; padding: 0; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
.keck-display, h1, h2, h3, h4, h5, h6 {
    font-family: var(--keck-font-display);
    font-weight: 700;
    margin: 0;
    line-height: 1.05;
    letter-spacing: -0.025em;
}
p { margin: 0 0 1em; }
input, textarea, select { font: inherit; }

/* ---------- Highlight ---------- */
.d4-highlight {
    background-image: linear-gradient(
        transparent calc(100% - var(--hl-height)),
        var(--hl) calc(100% - var(--hl-height))
    );
    background-repeat: no-repeat;
    background-size: 0% 100%;
    background-position: 0 0;
    transition: background-size 0.9s cubic-bezier(0.65, 0, 0.35, 1);
    -webkit-box-decoration-break: clone;
    box-decoration-break: clone;
    padding-inline: 0.05em;
}
.d4-highlight.is-revealed { background-size: 100% 100%; }
.d4-highlight[data-color="gelb"]        { --hl: var(--keck-yellow); }
.d4-highlight[data-color="sky"]         { --hl: var(--keck-sky); }
.d4-highlight[data-color="gruen"]       { --hl: var(--keck-green); }
.d4-highlight[data-color="orange"]      { --hl: var(--keck-orange); }
.d4-highlight[data-color="rot"]         { --hl: var(--keck-red); }
.d4-highlight[data-color="gruen-soft"]  { --hl: var(--keck-green-soft); }
.d4-highlight[data-color="orange-soft"] { --hl: var(--keck-orange-soft); }
.d4-highlight[data-color="blue-light"]  { --hl: var(--keck-blue-light); }
.d4-section--dark .d4-highlight[data-color="gruen"] { color: #fff; }

/* ---------- Cursor ---------- */
.d4-cursor {
    position: fixed; top: 0; left: 0;
    width: 18px; height: 18px;
    border-radius: 50%;
    background: #fff;
    pointer-events: none;
    z-index: var(--z-cursor);
    mix-blend-mode: difference;
    will-change: transform;
    transition: opacity 0.2s ease;
}
@media (pointer: fine) {
    *, *::before, *::after { cursor: none !important; }
}
@media (pointer: coarse) {
    .d4-cursor { display: none; }
}

/* ---------- Section-Label ---------- */
.d4-section-label {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
}
.d4-section-label__line {
    width: 24px;
    height: 2px;
    background: currentColor;
    flex: 0 0 24px;
}
.d4-section-label__text {
    font-family: var(--keck-font-body);
    font-size: 13px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    font-weight: 600;
    line-height: 1;
}

/* ---------- Buttons ---------- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    padding: 20px 36px;
    background: var(--keck-ink);
    color: #fff;
    border-radius: 999px;
    font-family: var(--keck-font-body);
    font-size: 18px;
    font-weight: 500;
    transition: transform 0.2s ease, background 0.2s ease;
}
.btn-primary:hover { transform: translateY(-2px); }
.d4-section--dark .btn-primary { background: #fff; color: var(--keck-ink); }
.d4-section--dark .btn-primary:hover { background: #fff; }

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 28px;
    background: transparent;
    color: var(--keck-ink);
    border: 2px solid var(--keck-ink);
    border-radius: 999px;
    font-size: 18px;
    transition: background 0.2s, color 0.2s;
}
.btn-secondary:hover { background: var(--keck-ink); color: #fff; }

/* =========================================================
   Header
   Grid 1fr auto 1fr (Logo | Nav | Meta)
   ========================================================= */
.d4-header {
    position: sticky;
    top: 0;
    z-index: var(--z-nav);
    background: var(--keck-bg);
}
.d4-header__inner {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 32px var(--container-pad);
    gap: 36px;
}
.d4-header__logo {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    line-height: 1;
    text-decoration: none;
}
.d4-header__logo-main {
    display: inline-flex;
    align-items: baseline;
    gap: 8px;
}
.d4-header__logo-text {
    font-family: var(--keck-font-display);
    font-size: 44px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.05em;
    color: var(--keck-ink);
}
.d4-header__logo-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--keck-ink);
    display: inline-block;
    align-self: baseline;
    flex-shrink: 0;
}
.d4-header__logo-sub {
    font-size: 11px;
    opacity: 0.6;
    color: var(--keck-ink);
    letter-spacing: 0.05em;
}
/* max-width: none verhindert, dass die globale Regel img{max-width:100%} das Logo
   mit der schrumpfenden Grid-Spalte verkleinert – Grösse bleibt bis zum Burger (≤1024px) stabil. */
.d4-header__logo img { max-height: 52px; width: auto; max-width: none; display: block; }
.d4-header__logo--img .d4-header__logo-main { align-items: flex-end; gap: 12px; }
.d4-header__logo--img .d4-header__logo-dot { align-self: flex-end; }
.d4-header__brand { display: inline-flex; align-items: center; gap: 20px; }
.d4-header__icon { display: inline-flex; align-items: center; flex-shrink: 0; }
.d4-header__icon img { max-height: 52px; width: auto; max-width: none; display: block; }
/* Ab Tablet (Burger-Menü-Bereich) kompaktere Logo-/Icon-Grösse. */
@media (max-width: 1024px) {
    .d4-header__logo-text { font-size: 32px; }
    .d4-header__logo-dot { width: 11px; height: 11px; }
    .d4-header__logo-sub { font-size: 10px; }
    .d4-header__logo img { max-height: 40px; }
    .d4-header__brand { gap: 14px; }
    .d4-header__icon img { max-height: 40px; }
}

.d4-nav {
    display: flex;
    gap: 36px;
    font-size: 15px;
    align-items: center;
    justify-content: center;
}
.d4-nav__item {
    position: relative;
    padding: 4px 0 2px;
    color: var(--keck-ink);
    font-weight: 400;
}
.d4-nav__item.current-menu-item { font-weight: 700; }
.d4-nav__item::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    height: 5px;
    width: 0%;
    background: var(--keck-yellow);
    transition: width 0.3s ease;
}
.d4-nav__item:nth-child(1)::after { background: var(--keck-yellow); }
.d4-nav__item:nth-child(2)::after { background: var(--keck-sky); }
.d4-nav__item:nth-child(3)::after { background: var(--keck-orange); }
.d4-nav__item:nth-child(4)::after { background: var(--keck-green); }
.d4-nav__item:nth-child(5)::after { background: var(--keck-red); }
.d4-nav__item:hover::after,
.d4-nav__item.current-menu-item::after { width: 100%; }

.d4-header__meta {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 24px;
    font-size: 14px;
}
.d4-header__meta a:hover { color: var(--keck-orange); }

.d4-hamburger {
    display: none;
    width: 38px;
    height: 38px;
    border: 1.5px solid var(--keck-ink);
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 4px;
    padding: 0;
}
.d4-hamburger span {
    display: block;
    width: 16px;
    height: 1.5px;
    background: var(--keck-ink);
    transition: transform 0.3s ease, opacity 0.2s ease;
}
.d4-hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.d4-hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.d4-hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

.d4-mobile-nav {
    position: fixed;
    inset: 0;
    background: var(--keck-bg);
    z-index: calc(var(--z-nav) + 1);
    padding: 24px var(--container-pad, 24px) 40px;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1);
    overflow-y: auto;
}
.d4-mobile-nav[aria-hidden="false"] { transform: translateX(0); }

/* Top-Bar im offenen Menü: Logo links, Close-Button rechts */
.d4-mobile-nav__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 56px;
}
.d4-mobile-nav__logo {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    line-height: 1;
    color: var(--keck-ink);
    text-decoration: none;
}
.d4-mobile-nav__logo-main {
    display: inline-flex;
    align-items: baseline;
    gap: 8px;
}
.d4-mobile-nav__logo--img .d4-mobile-nav__logo-main {
    align-items: flex-end;
    gap: 8px;
}
.d4-mobile-nav__logo--img .d4-mobile-nav__logo-dot { align-self: flex-end; }
.d4-mobile-nav__logo img { max-height: 40px; width: auto; display: block; } /* gleiche Höhe wie Header (mobil) */
.d4-mobile-nav__brand { display: inline-flex; align-items: center; gap: 16px; }
.d4-mobile-nav__icon { display: inline-flex; align-items: center; flex-shrink: 0; }
.d4-mobile-nav__icon img { max-height: 40px; width: auto; display: block; } /* gleiche Höhe wie Header (mobil) */
.d4-mobile-nav__logo-text {
    font-family: var(--keck-font-display);
    font-weight: 700;
    font-size: 32px;
    line-height: 1;
    letter-spacing: -0.04em;
}
.d4-mobile-nav__logo-dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: var(--keck-ink);
    align-self: baseline;
    flex-shrink: 0;
}
.d4-mobile-nav__logo-sub {
    font-size: 11px;
    color: var(--keck-muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.d4-mobile-nav__close {
    position: relative;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1.5px solid var(--keck-ink);
    background: transparent;
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
    transition: background 0.2s ease;
}
.d4-mobile-nav__close:hover { background: var(--keck-ink); }
.d4-mobile-nav__close span {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 18px;
    height: 1.5px;
    background: var(--keck-ink);
    border-radius: 1px;
    transition: background 0.2s ease;
}
.d4-mobile-nav__close span:nth-child(1) { transform: translate(-50%, -50%) rotate(45deg); }
.d4-mobile-nav__close span:nth-child(2) { transform: translate(-50%, -50%) rotate(-45deg); }
.d4-mobile-nav__close:hover span { background: #fff; }

.d4-mobile-nav ul { display: flex; flex-direction: column; gap: 32px; list-style: none; padding: 0; margin: 0; }
.d4-mobile-nav a {
    font-family: var(--keck-font-display);
    font-size: 40px;
    line-height: 1;
}
.d4-mobile-nav__meta {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--keck-line);
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 16px;
}

/* =========================================================
   Footer
   ========================================================= */
.d4-footer {
    border-top: 1px solid var(--keck-line);
    padding: 40px var(--container-pad);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 28px;
    flex-wrap: wrap;
    font-size: 13px;
    color: var(--keck-muted);
}
.d4-footer__links {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
}
.d4-footer__links a:hover { color: var(--keck-ink); }

/* =========================================================
   STARTSEITE — section 1 Hero
   padding 120/64/160/64, Headline 120px, Watermark "K"
   + 2-Col-Grid darunter (Zitat | Prosa)
   ========================================================= */
.d4-hero {
    position: relative;
    padding: 120px var(--container-pad) 160px;
    overflow: hidden;
}
.d4-hero__watermark {
    position: absolute;
    top: 40%;
    right: -80px;
    transform: translateY(-50%);
    font-family: var(--keck-font-display);
    font-weight: 700;
    font-size: 600px;
    line-height: 0.8;
    letter-spacing: -0.05em;
    color: var(--keck-ink);
    opacity: 0.04;
    pointer-events: none;
    user-select: none;
    z-index: 0;
}
.d4-hero__content {
    position: relative;
    z-index: 1;
    max-width: 1400px;
}
.d4-hero__headline {
    font-size: 120px;
    line-height: 1.0;
    margin: 0;
    letter-spacing: -0.035em;
    min-height: 360px;
}
.d4-hero__eyebrow,
.d4-hero__typewriter-wrap {
    display: block;
}
.d4-typewriter { display: inline-block; }
.d4-typewriter-cursor {
    display: inline-block;
    color: var(--keck-ink);
    font-weight: 400;
    animation: blink 1s steps(2, end) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.d4-hero__below {
    position: relative;
    z-index: 1;
    margin-top: 100px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 96px;
    align-items: start;
}
.d4-hero__quote {
    font-family: var(--keck-font-serif);
    font-style: italic;
    font-weight: 400;
    font-size: 32px;
    line-height: 1.45;
    margin: 0;
    color: var(--keck-ink);
}
.d4-hero__sig {
    margin-top: 28px;
    display: flex;
    gap: 12px;
    align-items: center;
    font-size: 15px;
}
.d4-hero__sig-line { width: 24px; height: 2px; background: var(--keck-ink); flex: 0 0 24px; }
.d4-hero__sig-name { font-family: var(--keck-font-display); font-weight: 700; }

.d4-hero__np-headline {
    font-size: 32px;
    margin: 0 0 20px;
    letter-spacing: -0.015em;
}
.d4-hero__np-text {
    font-size: 19px;
    line-height: 1.6;
    margin: 0;
    max-width: 540px;
}

/* =========================================================
   STARTSEITE — Marlies-Sektion (über Mein Angebot)
   ========================================================= */
.d4-marlies { padding: 160px var(--container-pad); }
.d4-marlies__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}
.d4-marlies__portrait {
    width: 100%;
    max-width: 520px;
    justify-self: center;
}
.d4-marlies__headline {
    font-size: 72px;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin: 0 0 32px;
    color: var(--keck-ink);
}
.d4-marlies__body {
    font-size: 20px;
    line-height: 1.6;
    margin: 0 0 40px;
    max-width: 540px;
    color: var(--keck-ink);
}
.d4-marlies__portrait {
    position: relative;
    aspect-ratio: 4 / 5;
    background: var(--keck-green-soft);
    border-radius: 12px;
    overflow: hidden;
}
.d4-marlies__portrait-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.d4-marlies__portrait-img--default {
    z-index: 1;
    opacity: 1;
}
.d4-marlies__portrait-img--hover {
    z-index: 2;
    opacity: 0;
    transition: opacity 0.4s ease;
}
.d4-marlies__portrait:hover .d4-marlies__portrait-img--hover { opacity: 1; }
.d4-marlies__portrait-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(15, 15, 14, 0.4);
    font-family: var(--keck-font-display);
    font-size: 18px;
    letter-spacing: 0.15em;
}

@media (max-width: 900px) {
    .d4-marlies { padding: 80px var(--container-pad); }
    .d4-marlies__grid { grid-template-columns: 1fr; gap: 48px; }
    .d4-marlies__headline { font-size: 48px; margin-bottom: 24px; }
}
@media (max-width: 640px) {
    .d4-marlies__headline { font-size: 36px; }
    .d4-marlies__body { font-size: 18px; }
}

/* =========================================================
   STARTSEITE — Angebot dunkel
   padding 160/64, H2 96px, Services 4-col grid
   ========================================================= */
.d4-section { padding: 160px var(--container-pad); }
.d4-section--dark { background: var(--keck-ink); color: #fff; }
.d4-section--grey { background: var(--keck-surface-grey-2); }
.d4-section--border-top { border-top: 1px solid var(--keck-line); }

.d4-angebot__headline {
    font-size: 96px;
    line-height: 1.0;
    margin: 0 0 80px;
    letter-spacing: -0.03em;
    max-width: 1200px;
    color: #fff;
}

.d4-services { border-top: 1px solid rgba(255, 255, 255, 0.2); }
.d4-service-row {
    display: grid;
    grid-template-columns: 80px 1fr 1fr 200px;
    gap: 48px;
    padding: 48px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    align-items: center;
    color: #fff;
    text-decoration: none;
    transition: background 0.3s ease, padding-left 0.3s ease;
}
a.d4-service-row { color: #fff; }
.d4-service-row:hover {
    background: rgba(255, 255, 255, 0.04);
    padding-left: 24px;
}
.d4-service-row[data-color="gruen-soft"]  { --accent: var(--keck-green-soft); }
.d4-service-row[data-color="blue-light"]  { --accent: var(--keck-blue-light); }
.d4-service-row[data-color="orange-soft"] { --accent: var(--keck-orange-soft); }
.d4-service-row[data-color="gelb"]        { --accent: var(--keck-yellow); }
.d4-service-row[data-color="sky"]         { --accent: var(--keck-sky); }
.d4-service-row[data-color="gruen"]       { --accent: var(--keck-green); }
.d4-service-row[data-color="orange"]      { --accent: var(--keck-orange); }
.d4-service-row[data-color="rot"]         { --accent: var(--keck-red); }

.d4-service-row__num {
    font-family: var(--keck-font-mono);
    font-size: 14px;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.4);
    transition: color 0.3s ease;
}
.d4-service-row:hover .d4-service-row__num { color: var(--accent); }

.d4-service-row__title {
    font-family: var(--keck-font-display);
    font-size: 40px;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin: 0;
    color: #fff;
}
/* LEFT-Col: Default = Titel, Hover = "Ich komponiere…" in Titel-Grösse + italic */
.d4-service-row__title-default { display: inline; }
.d4-service-row__title-hover {
    display: none;
    font-style: italic;
    color: var(--accent);
    white-space: nowrap;
}
.d4-service-row:hover .d4-service-row__title-default { display: none; }
.d4-service-row:hover .d4-service-row__title-hover { display: inline; }

/* RIGHT-Col: Default-Lead "Ich komponiere…" ↔ Hover-Lead = Titel mit Unterstrich */
.d4-service-row__body-col { display: block; }
.d4-service-row__lead {
    display: block;
    font-size: 17px;
    line-height: 1.4;
    margin: 0 0 0.8em;
    max-width: 520px;
}
.d4-service-row__lead--hover {
    display: none;
    color: var(--accent);
    font-weight: 700;
    text-decoration: underline;
    text-decoration-color: var(--accent);
    text-underline-offset: 4px;
    text-decoration-thickness: 2px;
}
.d4-service-row:hover .d4-service-row__lead--default { display: none; }
.d4-service-row:hover .d4-service-row__lead--hover { display: block; }

.d4-service-row__body {
    font-size: 17px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.85);
    margin: 0;
    max-width: 520px;
}

.d4-service-row__arrow {
    justify-self: end;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    box-sizing: border-box;
    border-radius: 50%;
    border: 1.5px solid rgba(255, 255, 255, 0.4);
    background: transparent;
    color: #fff;
    font-family: var(--keck-font-display);
    font-size: 24px;
    line-height: 1;
    /* Optisches Zentrieren des '→'-Glyphs: padding-bottom hebt den
       flex-zentrierten Inhalt um wenige Pixel nach OBEN. */
    padding-bottom: 4px;
    transition: all 0.3s ease;
}
.d4-service-row:hover .d4-service-row__arrow {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--keck-ink);
    transform: translateX(8px);
}

/* =========================================================
   STARTSEITE — Projekte
   padding 160/64, H2 88px maxWidth 1200
   Featured: 1.3fr/1fr Grid, Bild mit Hover-Overlay
   3-col grid darunter mit Hover-Overlay-Cards
   ========================================================= */
.d4-projects__headline {
    font-size: 88px;
    line-height: 1.15;
    margin: 0 0 80px;
    letter-spacing: -0.03em;
    max-width: 1200px;
}
.d4-projects__featured {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 80px;
    align-items: start;
}
.d4-proj-thumb {
    aspect-ratio: 4 / 3;
    background: var(--keck-surface-grey);
    position: relative;
    overflow: hidden;
}
.d4-proj-thumb img { width: 100%; height: 100%; object-fit: cover; }
.d4-proj-thumb__overlay {
    position: absolute;
    inset: 0;
    background: var(--keck-ink);
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 40px;
    opacity: 0;
    transition: opacity 0.4s ease;
}
.d4-proj-thumb:hover .d4-proj-thumb__overlay { opacity: 1; }
.d4-proj-thumb__overlay-label {
    font-size: 13px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    opacity: 0.7;
    margin-bottom: 12px;
}
.d4-proj-thumb__overlay-title {
    font-family: var(--keck-font-display);
    font-size: 36px;
    margin: 0;
    letter-spacing: -0.02em;
}
.d4-projects__featured-cat {
    font-size: 12px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--keck-muted);
    margin: 0 0 16px;
}
.d4-projects__featured-text {
    font-size: 19px;
    line-height: 1.65;
    margin: 0 0 32px;
}

.d4-projects__grid {
    margin-top: 120px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.d4-projects__all {
    margin-top: 64px;
    display: flex;
    justify-content: center;
}
.d4-mini-card {
    display: block;
    color: var(--keck-ink);
    text-decoration: none;
    --accent: var(--keck-surface-grey);
}
.d4-mini-card[data-accent="gelb"]        { --accent: var(--keck-yellow); }
.d4-mini-card[data-accent="sky"]         { --accent: var(--keck-sky); }
.d4-mini-card[data-accent="gruen-soft"]  { --accent: var(--keck-green-soft); }
.d4-mini-card[data-accent="orange-soft"] { --accent: var(--keck-orange-soft); }
.d4-mini-card[data-accent="blue-light"]  { --accent: var(--keck-blue-light); }
.d4-mini-card[data-accent="orange"]      { --accent: var(--keck-orange); }

.d4-mini-card .d4-proj-thumb {
    margin-bottom: 20px;
    background: var(--keck-surface-grey);
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}
.d4-mini-card .d4-proj-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.d4-mini-card:hover .d4-proj-thumb img {
    transform: scale(1.06);
}
.d4-mini-card .d4-proj-card__arrow {
    position: absolute;
    right: 16px;
    bottom: 16px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--keck-ink);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 0;
    transform: translate(8px, 8px) scale(0.85);
    opacity: 0;
    transition: transform 0.35s ease, opacity 0.3s ease;
    box-shadow: 0 6px 20px rgba(15, 15, 14, 0.18);
    z-index: 2;
}
.d4-mini-card:hover .d4-proj-card__arrow {
    opacity: 1;
    transform: translate(0, 0) scale(1);
}
.d4-mini-card__cat {
    font-size: 12px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--keck-muted);
    margin-bottom: 8px;
    transition: color 0.25s ease;
}
.d4-mini-card__title {
    font-family: var(--keck-font-display);
    font-size: 24px;
    margin: 0;
    letter-spacing: -0.015em;
}
.d4-mini-card:hover .d4-mini-card__title {
    text-decoration: underline;
    text-decoration-color: var(--accent);
    text-underline-offset: 6px;
    text-decoration-thickness: 3px;
}
.d4-mini-card:hover .d4-mini-card__cat { color: var(--keck-ink); }

/* Featured-Projekt-Thumb: Zoom-Hover + farbiger Pfeil */
.d4-proj-thumb--featured {
    display: block;
    position: relative;
    --accent: var(--keck-yellow);
    background: var(--keck-surface-grey);
    border-radius: 8px;
    overflow: hidden;
}
.d4-proj-thumb--featured[data-accent="gelb"]        { --accent: var(--keck-yellow); }
.d4-proj-thumb--featured[data-accent="sky"]         { --accent: var(--keck-sky); }
.d4-proj-thumb--featured[data-accent="gruen-soft"]  { --accent: var(--keck-green-soft); }
.d4-proj-thumb--featured[data-accent="orange-soft"] { --accent: var(--keck-orange-soft); }
.d4-proj-thumb--featured[data-accent="blue-light"]  { --accent: var(--keck-blue-light); }
.d4-proj-thumb--featured[data-accent="orange"]      { --accent: var(--keck-orange); }

.d4-proj-thumb--featured img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.d4-proj-thumb--featured:hover img {
    transform: scale(1.05);
}
.d4-proj-thumb--featured .d4-proj-card__arrow {
    position: absolute;
    right: 24px;
    bottom: 24px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--keck-ink);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 0;
    transform: translate(10px, 10px) scale(0.85);
    opacity: 0;
    transition: transform 0.35s ease, opacity 0.3s ease;
    box-shadow: 0 8px 24px rgba(15, 15, 14, 0.2);
    z-index: 2;
}
.d4-proj-thumb--featured:hover .d4-proj-card__arrow {
    opacity: 1;
    transform: translate(0, 0) scale(1);
}

/* =========================================================
   STARTSEITE — Region
   padding 160/64, H2 88px, Subline 32px fontWeight 700
   ========================================================= */
.d4-region__headline {
    font-size: 88px;
    line-height: 1.15;
    margin: 0 0 24px;
    letter-spacing: -0.03em;
    max-width: 1200px;
}
.d4-region__subline {
    font-family: var(--keck-font-display);
    font-weight: 700;
    font-size: 32px;
    line-height: 1.3;
    letter-spacing: -0.015em;
    margin: 0;
    max-width: 1100px;
}

/* =========================================================
   STARTSEITE — Logo-Carousel
   padding 120/0, Section-Label-Container padding 0 64
   Marquee mit Kreis-Logos 180x180
   ========================================================= */
.d4-logos-section {
    padding: 120px 0;
    border-top: 1px solid var(--keck-line);
    overflow: hidden;
}
.d4-logos-section__head {
    padding: 0 var(--container-pad);
    margin-bottom: 56px;
}
.d4-marquee {
    overflow-x: auto;
    overflow-y: hidden;
    cursor: grab;
    scrollbar-width: none;
    -ms-overflow-style: none;
    -webkit-overflow-scrolling: touch;
    touch-action: pan-x pan-y;
    user-select: none;
}
.d4-marquee::-webkit-scrollbar { display: none; }
.d4-marquee.is-dragging { cursor: grabbing; }
.d4-marquee__track {
    display: flex;
    gap: 24px;
    width: max-content;
    align-items: center;
}

/* =========================================================
   Logo-Tile (einheitlich auf Home, Referenzen, Über mich)
   Bordered, weisses Tile, grau → farbig beim Hover
   ========================================================= */
.d4-logo {
    flex: 0 0 auto;
    width: 200px;
    height: 110px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 18px 24px;
    text-align: center;
    background: #fff;
    border: 1.5px solid rgba(15, 15, 14, 0.12);
    border-radius: 14px;
    font-family: var(--keck-font-display);
    font-weight: 700;
    font-size: 15px;
    color: var(--keck-ink);
    line-height: 1.2;
    text-decoration: none;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: filter 0.4s ease, opacity 0.4s ease, border-color 0.3s ease;
}
.d4-logo:hover {
    filter: grayscale(0%);
    opacity: 1;
    border-color: var(--keck-ink);
}
.d4-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    pointer-events: none;
}

/* =========================================================
   STARTSEITE — Kontakt dunkel
   padding 160/64, H2 88px maxWidth 1300, 3-col grid mit Borders
   ========================================================= */
.d4-kontakt-home__headline {
    font-size: 88px;
    line-height: 1.15;
    margin: 0 0 80px;
    letter-spacing: -0.03em;
    max-width: 1300px;
    color: #fff;
}
.d4-kontakt-home__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
}
.d4-kontakt-home__cell {
    padding: 40px 32px 40px 0;
    border-right: 1px solid rgba(255, 255, 255, 0.18);
}
.d4-kontakt-home__cell + .d4-kontakt-home__cell { padding-left: 32px; }
.d4-kontakt-home__cell:last-child { border-right: 0; }
.d4-kontakt-home__label {
    font-size: 12px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 16px;
}
.d4-kontakt-home__value {
    font-family: var(--keck-font-display);
    font-size: 28px;
    line-height: 1.3;
    letter-spacing: -0.015em;
    color: #fff;
    display: block;
}
.d4-kontakt-home__value--text {
    font-size: 22px;
    line-height: 1.4;
    white-space: pre-line;
}
.d4-kontakt-home__cta { margin-top: 64px; }

/* =========================================================
   PAGE-HERO (Sub-Pages: Angebot/Referenzen/Q-A/Übermich/Kontakt)
   padding 100/64/80/64, Title 96px (Angebot: 88px mit Inline-Highlights)
   ========================================================= */
.d4-page-hero {
    padding: 100px var(--container-pad) 80px;
}
.d4-page-hero__title {
    font-size: 96px;
    line-height: 1.05;
    margin: 0;
    letter-spacing: -0.03em;
    max-width: 1300px;
}
.d4-page-hero__title--medium {
    font-size: 88px;
    line-height: 1.1;
    letter-spacing: -0.03em;
    max-width: 1400px;
}

/* =========================================================
   ANGEBOT — Service-Rows wie Startseite (eigene Spec aber identisch)
   CTA-Block: padding 120/64, H2 56px maxWidth 1000, p 20px maxWidth 720
   ========================================================= */
.d4-cta-block { padding: 120px var(--container-pad); }
.d4-cta-block__headline {
    font-size: 56px;
    line-height: 1.1;
    margin: 0 0 32px;
    letter-spacing: -0.025em;
    max-width: 1000px;
}
.d4-cta-block__text {
    font-size: 20px;
    line-height: 1.6;
    margin: 0 0 40px;
    max-width: 720px;
    color: var(--keck-ink);
}

/* Angebot-Services-Wrapper (Light → Dark Block) */
.d4-section--services-dark { padding: 64px var(--container-pad); background: var(--keck-ink); color: #fff; }
@media (max-width: 767px) {
    .d4-section--services-dark { padding: 40px var(--container-pad); }
}

/* =========================================================
   REFERENZEN
   Intro: padding 40/64/60/64. Headline 36px lineHeight 1.3 mit Highlight
   Filter: padding 20/64/60. Chips 10/20 border 1.5px borderRadius 999
   Grid: 3-col gap 32. Card-Thumbnail aspect 4/3 Accent-BG + Hover-Overlay
   ========================================================= */
.d4-ref-intro { padding: 40px var(--container-pad) 60px; }
.d4-ref-intro__headline {
    font-size: 36px;
    line-height: 1.3;
    margin: 0 0 16px;
    letter-spacing: -0.02em;
    max-width: 1100px;
    font-weight: 700;
}
.d4-ref-intro__subline {
    font-size: 22px;
    line-height: 1.55;
    margin: 0;
    max-width: 900px;
    color: var(--keck-ink);
}

.d4-ref-filter { padding: 20px var(--container-pad) 60px; display: flex; flex-wrap: wrap; gap: 12px; }
.d4-ref-filter__chip {
    padding: 10px 20px;
    border: 1.5px solid rgba(15, 15, 14, 0.18);
    background: transparent;
    color: var(--keck-ink);
    border-radius: 999px;
    font-size: 14px;
    transition: all 0.2s ease;
}
.d4-ref-filter__chip:hover { border-color: var(--keck-ink); }
.d4-ref-filter__chip.is-active {
    background: var(--keck-ink);
    color: #fff;
    border-color: var(--keck-ink);
}

.d4-ref-grid { padding: 0 var(--container-pad) 120px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.d4-proj-card {
    display: block;
    color: var(--keck-ink);
    text-decoration: none;
    --accent: var(--keck-surface-grey);
}
.d4-proj-card .d4-proj-thumb {
    aspect-ratio: 4 / 3;
    margin-bottom: 16px;
    background: var(--keck-surface-grey);
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}
.d4-proj-card .d4-proj-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.d4-proj-card:hover .d4-proj-thumb img {
    transform: scale(1.06);
}
/* Pfeil-Badge unten rechts in Akzentfarbe */
.d4-proj-card__arrow {
    position: absolute;
    right: 16px;
    bottom: 16px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--keck-ink);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 0;
    transform: translate(8px, 8px) scale(0.85);
    opacity: 0;
    transition: transform 0.35s ease, opacity 0.3s ease, background 0.25s ease;
    box-shadow: 0 6px 20px rgba(15, 15, 14, 0.18);
    z-index: 2;
}
.d4-proj-card:hover .d4-proj-card__arrow {
    opacity: 1;
    transform: translate(0, 0) scale(1);
}

/* SVG-Pfeil exakt in der Kreismitte */
.d4-proj-card__arrow svg { display: block; }

/* Übersicht hat keinen Overlay-Layer (Titel steht unter dem Bild) */
.d4-proj-card .d4-proj-thumb__overlay { display: none; }

.d4-proj-card__cat {
    font-size: 12px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--keck-muted);
    margin-bottom: 6px;
    transition: color 0.25s ease;
}
.d4-proj-card__title {
    font-family: var(--keck-font-display);
    font-size: 22px;
    margin: 0;
    letter-spacing: -0.015em;
    transition: opacity 0.25s ease;
}
.d4-proj-card:hover .d4-proj-card__title {
    text-decoration: underline;
    text-decoration-color: var(--accent);
    text-underline-offset: 6px;
    text-decoration-thickness: 3px;
}
.d4-proj-card:hover .d4-proj-card__cat { color: var(--keck-ink); }


/* Akzentfarben pro Card (data-accent) */
.d4-proj-card[data-accent="gelb"]        { --accent: var(--keck-yellow); }
.d4-proj-card[data-accent="sky"]         { --accent: var(--keck-sky); }
.d4-proj-card[data-accent="gruen-soft"]  { --accent: var(--keck-green-soft); }
.d4-proj-card[data-accent="orange-soft"] { --accent: var(--keck-orange-soft); }
.d4-proj-card[data-accent="blue-light"]  { --accent: var(--keck-blue-light); }
.d4-proj-card[data-accent="orange"]      { --accent: var(--keck-orange); }

/* Referenzen Long-Term Clients Block (background #F7F7F5, 5-col Kreise) */
.d4-ref-clients { padding: 120px var(--container-pad); background: var(--keck-surface-grey-2); }
.d4-ref-clients__headline {
    font-size: 56px;
    line-height: 1.1;
    margin: 0 0 32px;
    letter-spacing: -0.025em;
    max-width: 1200px;
}
.d4-ref-clients__body {
    font-size: 19px;
    line-height: 1.65;
    margin: 0 0 64px;
    max-width: 820px;
}
.d4-ref-clients__grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    justify-items: center;
}

/* Referenzen Kontakt-Block am Ende */
.d4-ref-contact { padding: 120px var(--container-pad); }
.d4-ref-contact__headline {
    font-size: 56px;
    line-height: 1.15;
    margin: 0 0 32px;
    letter-spacing: -0.025em;
    max-width: 1200px;
}
.d4-ref-contact__body {
    font-size: 22px;
    line-height: 1.55;
    margin: 0 0 40px;
    max-width: 900px;
}
.d4-ref-contact__body a { font-weight: 700; }
.d4-ref-contact__cta { margin-top: 8px; }

/* =========================================================
   Q/A
   Hero 100/64/80/64. Akkordeon padding 60/64/120/64
   Kategorie-Head: flex baseline gap 20 marginBottom 32
   Nummer monospace 13. Name 40px keck-display mit Highlight 30%
   Items: borderTop 1.5px INK. Trigger padding 24/0 fontSize 24
   Icon Kreis 40px borderRadius 50% border 1.5px INK
   ========================================================= */
.d4-qa-section { padding: 60px var(--container-pad) 120px; }
.d4-qa-grid { display: grid; gap: 80px; }
.d4-qa-cat__head {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 32px;
}
.d4-qa-cat__num {
    font-family: var(--keck-font-mono);
    font-size: 13px;
    color: var(--keck-muted);
    letter-spacing: 0.05em;
}
.d4-qa-cat__name {
    font-family: var(--keck-font-display);
    font-size: 40px;
    margin: 0;
    letter-spacing: -0.02em;
    line-height: 1.05;
}
.d4-qa-items { border-top: 1.5px solid var(--keck-ink); }
.d4-qa-item { border-bottom: 1px solid var(--keck-line); }
.d4-qa-trigger {
    width: 100%;
    text-align: left;
    padding: 24px 0;
    background: transparent;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 32px;
    color: var(--keck-ink);
}
.d4-qa-trigger__label {
    font-family: var(--keck-font-display);
    font-size: 24px;
    letter-spacing: -0.015em;
    flex: 1;
    font-weight: 700;
    line-height: 1.3;
}
.d4-qa-icon {
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1.5px solid var(--keck-ink);
    font-size: 0;
    flex-shrink: 0;
    transition: background 0.3s ease, transform 0.3s ease;
}
.d4-qa-icon::before,
.d4-qa-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    background: var(--keck-ink);
    border-radius: 1px;
    transition: background 0.3s ease;
}
.d4-qa-icon::before {
    width: 14px;
    height: 1.5px;
    transform: translate(-50%, -50%);
}
.d4-qa-icon::after {
    width: 1.5px;
    height: 14px;
    transform: translate(-50%, -50%);
}
.d4-qa-item.is-open .d4-qa-icon {
    background: var(--keck-ink);
    transform: rotate(45deg);
}
.d4-qa-item.is-open .d4-qa-icon::before,
.d4-qa-item.is-open .d4-qa-icon::after {
    background: #fff;
}
.d4-qa-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}
.d4-qa-content__inner {
    max-width: none;
    padding-right: 0;
}
.d4-qa-content__inner p {
    font-size: 17px;
    line-height: 1.7;
    margin: 0 0 1em;
    color: var(--keck-ink);
}
.d4-qa-content__inner p:last-child { margin-bottom: 0; }
.d4-qa-item.is-open .d4-qa-content { padding-bottom: 32px; }
.d4-qa-download {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-top: 20px;
    padding: 12px 22px;
    background: var(--keck-ink);
    color: #fff;
    font-size: 14px;
    border-radius: 999px;
}
.d4-qa-download:hover { background: #1a1a18; }

/* =========================================================
   ÜBER MICH
   Intro: padding 40/64/80/64, Grid 1fr/1fr gap 80
   Linke Spalte: H1 64px + Subline 28px keck-display
   Rechte Spalte: Portrait aspect 4/5 BG green-soft
   Story: padding 80/64/120/64, maxWidth 960, gestaffelte Sizes
   Werdegang dunkel: padding 120/64, Credentials Grid 80/1fr
   Mitgliedschaften: Pills 80px hoch
   Regionen-Akkordeon: 2-col Kunden-Grid mit roten Bullets
   ========================================================= */
.d4-um-intro { padding: 40px var(--container-pad) 80px; }
.d4-um-intro__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}
.d4-um-intro__headline {
    font-size: 64px;
    line-height: 1.1;
    margin: 0 0 24px;
    letter-spacing: -0.025em;
}
.d4-um-intro__subline {
    font-family: var(--keck-font-display);
    font-weight: 700;
    font-size: 28px;
    line-height: 1.35;
    letter-spacing: -0.01em;
    margin: 0;
    color: var(--keck-ink);
}
.d4-um-portrait {
    aspect-ratio: 4 / 5;
    background: var(--keck-green-soft);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}
.d4-um-portrait img { width: 100%; height: 100%; object-fit: cover; }
.d4-um-portrait__placeholder {
    font-family: var(--keck-font-display);
    font-weight: 700;
    font-size: 18px;
    color: var(--keck-ink);
    opacity: 0.4;
    letter-spacing: 0.1em;
}

.d4-um-story { padding: 80px var(--container-pad) 120px; }
.d4-um-story__inner { max-width: 960px; }
.d4-um-story__p {
    font-size: 22px;
    line-height: 1.55;
    margin: 0 0 28px;
}
.d4-um-story__p-betont {
    font-family: var(--keck-font-display);
    font-weight: 700;
    font-size: 28px;
    line-height: 1.4;
    letter-spacing: -0.015em;
    margin: 16px 0 28px;
}
.d4-um-story__inner > *:first-child { margin-top: 0; }
.d4-um-story__inner > *:last-child { margin-bottom: 0; }

.d4-um-werdegang { padding: 120px var(--container-pad); background: var(--keck-ink); color: #fff; }
.d4-um-werdegang__headline {
    font-family: var(--keck-font-display);
    font-size: 56px;
    line-height: 1.1;
    margin: 0 0 56px;
    letter-spacing: -0.025em;
    color: #fff;
    max-width: 1100px;
}
.d4-um-creds { border-top: 1px solid rgba(255, 255, 255, 0.2); }
.d4-um-creds__row {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 32px;
    align-items: center;
    padding: 28px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}
.d4-um-creds__num {
    font-family: var(--keck-font-mono);
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 0.05em;
}
.d4-um-creds__text {
    font-family: var(--keck-font-display);
    font-size: 24px;
    letter-spacing: -0.015em;
    color: #fff;
    line-height: 1.3;
}
.d4-um-werdegang__abschluss {
    font-size: 19px;
    line-height: 1.7;
    margin: 48px 0 0;
    max-width: 920px;
    color: rgba(255, 255, 255, 0.9);
}
.d4-um-werdegang__frage {
    font-family: var(--keck-font-display);
    font-size: 24px;
    line-height: 1.5;
    margin: 48px 0 0;
    max-width: 920px;
    color: #fff;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.d4-um-pills { padding: 120px var(--container-pad); }
.d4-um-pills__list {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    align-items: center;
}

.d4-um-regions { padding: 60px var(--container-pad) 120px; }
.d4-um-regions__headline {
    font-family: var(--keck-font-display);
    font-size: 56px;
    line-height: 1.1;
    margin: 0 0 24px;
    letter-spacing: -0.025em;
    max-width: 1100px;
}
.d4-um-regions__subline {
    font-size: 20px;
    line-height: 1.6;
    margin: 0 0 56px;
    max-width: 820px;
}
.d4-um-regions__list { border-top: 1.5px solid var(--keck-ink); }
.d4-um-region {
    border-bottom: 1px solid var(--keck-line);
    padding: 28px 0;
}
.d4-um-region__header {
    display: flex;
    align-items: center;
    gap: 32px;
}
.d4-um-region__left { display: flex; align-items: center; gap: 20px; }
.d4-um-region__num {
    font-family: var(--keck-font-mono);
    font-size: 13px;
    color: var(--keck-muted);
    letter-spacing: 0.05em;
}
.d4-um-region__name {
    font-family: var(--keck-font-display);
    font-size: 28px;
    letter-spacing: -0.015em;
    line-height: 1;
}
.d4-um-region__content {
    padding-top: 20px;
}
.d4-um-region__kunden {
    list-style: none;
    padding: 0 0 0 36px;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px 32px;
}
.d4-um-region__kunden li {
    font-size: 16px;
    color: var(--keck-ink);
    padding: 0;
    display: flex;
    align-items: baseline;
    gap: 12px;
}
.d4-um-region__kunden li::before {
    content: '●';
    color: var(--keck-red);
    font-size: 10px;
}

/* =========================================================
   KONTAKT
   Intro: padding 40/64/60/64. Headline 36px keck-display
   Info-Grid: padding 40/64/80. 3-col gap 0 borderTop+borderBottom
   Form-Block: padding 80/64/120. Grid 1fr/1.4fr gap 96
   Linke: Headline 56px mit Highlight, Hinweis-Box graue
   Rechte: dunkles Form D4_INK background, padding 40/48 borderRadius 12
   ========================================================= */
.d4-kontakt-intro { padding: 40px var(--container-pad) 60px; }
.d4-kontakt-intro__headline {
    font-family: var(--keck-font-display);
    font-size: 36px;
    line-height: 1.3;
    margin: 0 0 24px;
    letter-spacing: -0.02em;
    max-width: 1100px;
    font-weight: 700;
}
.d4-kontakt-intro__subline {
    font-size: 22px;
    line-height: 1.55;
    margin: 0;
    max-width: 900px;
}
.d4-kontakt-intro__subline a {
    color: var(--keck-ink);
    font-weight: 700;
}

.d4-kontakt-info { padding: 40px var(--container-pad) 80px; }
.d4-kontakt-info__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border-top: 1px solid var(--keck-line);
    border-bottom: 1px solid var(--keck-line);
}
.d4-kontakt-info__cell {
    padding: 40px 32px;
    border-right: 1px solid var(--keck-line);
}
.d4-kontakt-info__cell:first-child { padding-left: 0; }
.d4-kontakt-info__cell:last-child { padding-right: 0; border-right: 0; }
.d4-kontakt-info__label {
    font-size: 12px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--keck-muted);
    margin-bottom: 16px;
}
.d4-kontakt-info__value {
    font-family: var(--keck-font-display);
    font-size: 26px;
    line-height: 1.3;
    letter-spacing: -0.015em;
    color: var(--keck-ink);
    display: block;
}
.d4-kontakt-info__value:hover { color: var(--keck-orange); }
.d4-kontakt-info__value--text {
    font-size: 18px;
    line-height: 1.5;
    white-space: pre-line;
}

.d4-kontakt-form { padding: 80px var(--container-pad) 120px; }
.d4-kontakt-form__grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 96px;
    align-items: start;
}
.d4-kontakt-form__intro h2 {
    font-family: var(--keck-font-display);
    font-size: 56px;
    line-height: 1.1;
    margin: 0 0 24px;
    letter-spacing: -0.025em;
}
.d4-kontakt-form__sub {
    font-size: 18px;
    line-height: 1.65;
    margin: 0 0 32px;
}
.d4-kontakt-form__hint {
    padding: 24px 28px;
    background: var(--keck-surface-grey-2);
    border-radius: 8px;
    font-size: 15px;
    line-height: 1.6;
}
.d4-kontakt-form__hint strong {
    font-family: var(--keck-font-display);
    font-weight: 700;
}

/* Form: dunkler Block */
.d4-form {
    display: grid;
    gap: 24px;
    padding: 40px 48px;
    background: var(--keck-ink);
    color: #fff;
    border-radius: 12px;
}
.d4-form__row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.d4-form__field { display: flex; flex-direction: column; }
.d4-form label {
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 8px;
    display: block;
}
.d4-form input,
.d4-form textarea {
    width: 100%;
    background: transparent;
    color: #fff;
    border: 0;
    border-bottom: 1.5px solid rgba(255, 255, 255, 0.3);
    padding: 12px 0;
    font-size: 17px;
    outline: none;
    transition: border-color 0.2s ease;
    resize: vertical;
}
.d4-form textarea { min-height: 120px; }
.d4-form input::placeholder,
.d4-form textarea::placeholder { color: rgba(255, 255, 255, 0.4); }
.d4-form input:focus,
.d4-form textarea:focus { border-bottom-color: var(--keck-yellow); }
.d4-form__honey { position: absolute; left: -9999px; }
.d4-form__field--math input { max-width: 220px; }

.d4-form__chips-label {
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 14px;
    display: block;
}
.d4-form__chips { display: flex; flex-wrap: wrap; gap: 10px; }
.d4-form__chip {
    padding: 10px 18px;
    border: 1.5px solid rgba(255, 255, 255, 0.3);
    background: transparent;
    color: #fff;
    border-radius: 999px;
    font-size: 14px;
    transition: all 0.2s ease;
}
.d4-form__chip:hover { border-color: #fff; }
.d4-form__chip.is-active {
    background: var(--keck-yellow);
    color: var(--keck-ink);
    border-color: var(--keck-yellow);
}

.d4-form__submit {
    justify-self: start;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 32px;
    background: #fff;
    color: var(--keck-ink);
    border-radius: 999px;
    font-size: 17px;
    font-weight: 600;
    transition: all 0.2s ease;
}
.d4-form__submit:disabled,
.d4-form__submit[aria-disabled="true"] {
    background: rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.5);
    cursor: not-allowed;
}
.d4-form__disclaimer {
    font-size: 12px;
    line-height: 1.5;
    margin: 0;
    color: rgba(255, 255, 255, 0.5);
}

.d4-banner {
    padding: 24px 32px;
    border-radius: 6px;
    margin-bottom: 32px;
    font-size: 18px;
    line-height: 1.5;
}
.d4-banner--error { background: var(--keck-orange-soft); color: var(--keck-ink); }

/* Vollflächige Success-Ansicht nach Formular-Submit */
.d4-kontakt-success {
    min-height: calc(100vh - 240px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 96px var(--container-pad);
    text-align: center;
}
.d4-kontakt-success__inner {
    max-width: 1100px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 48px;
}
.d4-kontakt-success__text {
    font-family: var(--keck-font-display);
    font-size: 64px;
    line-height: 1.15;
    letter-spacing: -0.025em;
    margin: 0;
    color: var(--keck-ink);
}
.d4-kontakt-success__back {
    font-size: 16px;
    letter-spacing: 0.02em;
    color: var(--keck-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}
.d4-kontakt-success__back:hover { color: var(--keck-ink); }
@media (max-width: 900px) {
    .d4-kontakt-success { min-height: calc(100vh - 160px); padding: 64px var(--container-pad); }
    .d4-kontakt-success__text { font-size: 40px; }
}
@media (max-width: 640px) {
    .d4-kontakt-success__text { font-size: 30px; }
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1280px) {
    .d4-hero__headline { font-size: 96px; min-height: 280px; }
    .d4-page-hero__title { font-size: 80px; }
    .d4-page-hero__title--medium { font-size: 72px; }
    .d4-angebot__headline,
    .d4-projects__headline,
    .d4-region__headline,
    .d4-kontakt-home__headline { font-size: 72px; }
    .d4-service-row__title { font-size: 34px; }
    .d4-um-intro__headline { font-size: 56px; }
    .d4-ref-grid { grid-template-columns: repeat(3, 1fr); }
    .d4-ref-clients__grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 1024px) {
    :root { --container-pad: 40px; }
    /* Ab Tablet das Burger-Menü statt der horizontalen Navigation zeigen,
       damit Logo + Jubiläums-Icon genügend Platz haben. */
    .d4-nav, .d4-header__meta { display: none; }
    .d4-hamburger { display: inline-flex; }
    .d4-header__inner { grid-template-columns: 1fr auto; padding: 20px var(--container-pad); }
    .d4-hero { padding: 80px var(--container-pad) 120px; }
    .d4-hero__headline { font-size: 72px; min-height: 220px; }
    .d4-hero__watermark { font-size: 400px; right: -60px; }
    .d4-section { padding: 100px var(--container-pad); }
    .d4-page-hero { padding: 80px var(--container-pad) 60px; }
    .d4-page-hero__title { font-size: 64px; }
    .d4-page-hero__title--medium { font-size: 56px; }
    .d4-angebot__headline,
    .d4-projects__headline,
    .d4-region__headline,
    .d4-kontakt-home__headline { font-size: 56px; margin-bottom: 56px; }
    .d4-hero__below,
    .d4-projects__featured,
    .d4-um-intro__grid,
    .d4-kontakt-form__grid { grid-template-columns: 1fr; gap: 48px; }
    .d4-service-row { grid-template-columns: 60px 1fr 56px; gap: 24px; }
    .d4-service-row__body-col { display: none; }
    .d4-service-row__title { font-size: 28px; }
    .d4-ref-grid,
    .d4-projects__grid { grid-template-columns: repeat(2, 1fr); }
    .d4-ref-clients__grid { grid-template-columns: repeat(3, 1fr); }
    .d4-um-werdegang__headline { font-size: 44px; }
    .d4-kontakt-intro__headline { font-size: 28px; }
    .d4-kontakt-form__intro h2 { font-size: 40px; }
}

@media (max-width: 767px) {
    :root { --container-pad: 24px; }
    /* Enger Abstand zwischen Brand und Burger, damit Logo+Icon+Burger auch auf
       schmalen Phones (~320px) sicher in eine Zeile passen. */
    .d4-header__inner { gap: 16px; }

    .d4-hero { padding: 56px var(--container-pad) 80px; }
    .d4-hero__headline { font-size: 48px; min-height: 0; }
    .d4-hero__watermark { font-size: 240px; top: auto; bottom: -40px; right: -40px; transform: none; }
    .d4-hero__below { margin-top: 56px; gap: 32px; }
    .d4-hero__quote { font-size: 22px; }
    .d4-hero__np-headline { font-size: 24px; }

    .d4-section { padding: 64px var(--container-pad); }
    .d4-page-hero { padding: 48px var(--container-pad) 40px; }
    .d4-page-hero__title,
    .d4-page-hero__title--medium { font-size: 44px; }

    .d4-angebot__headline,
    .d4-projects__headline,
    .d4-region__headline,
    .d4-kontakt-home__headline { font-size: 36px; margin-bottom: 40px; }
    .d4-region__subline { font-size: 22px; }

    .d4-service-row {
        grid-template-columns: 28px 1fr 44px;
        gap: 16px;
        padding: 28px 0;
        align-items: center;
    }
    .d4-service-row__body-col { display: none; }
    .d4-service-row__title { font-size: 26px; line-height: 1.15; }
    .d4-service-row__title-hover { white-space: normal; }
    .d4-service-row__arrow {
        width: 44px;
        height: 44px;
        font-size: 18px;
        padding-top: 0;
        padding-bottom: 3px;
    }
    .d4-service-row:hover { padding-left: 0; }
    .d4-service-row:hover .d4-service-row__arrow { transform: none; }

    .d4-projects__grid,
    .d4-ref-grid,
    .d4-ref-clients__grid { grid-template-columns: 1fr; }

    .d4-kontakt-home__grid,
    .d4-kontakt-info__grid { grid-template-columns: 1fr; }
    .d4-kontakt-home__cell,
    .d4-kontakt-info__cell {
        padding: 24px 0;
        border-right: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.18);
    }
    .d4-kontakt-info__cell { border-bottom-color: var(--keck-line); }
    .d4-kontakt-home__cell + .d4-kontakt-home__cell,
    .d4-kontakt-info__cell:first-child { padding-left: 0; }
    .d4-kontakt-home__cell:last-child,
    .d4-kontakt-info__cell:last-child { border-bottom: 0; }
    .d4-kontakt-home__value { font-size: 22px; }
    .d4-kontakt-info__value { font-size: 22px; }

    .d4-um-intro { padding: 24px var(--container-pad) 56px; }
    .d4-um-intro__headline { font-size: 40px; }
    .d4-um-intro__subline { font-size: 22px; }
    .d4-um-story { padding: 56px var(--container-pad) 72px; }
    .d4-um-story__p1 { font-size: 20px; }
    .d4-um-werdegang { padding: 72px var(--container-pad); }
    .d4-um-werdegang__headline { font-size: 32px; margin-bottom: 32px; }
    .d4-um-creds__row {
        grid-template-columns: 28px 1fr;
        gap: 16px;
        padding: 20px 0;
        align-items: center;
    }
    .d4-um-creds__text { font-size: 18px; line-height: 1.35; }
    .d4-um-pills { padding: 72px var(--container-pad); }
    .d4-um-pills__item { height: 60px; padding: 0 22px; font-size: 16px; }
    .d4-um-regions { padding: 40px var(--container-pad) 72px; }
    .d4-um-regions__headline { font-size: 32px; }
    .d4-um-region__name { font-size: 22px; }
    .d4-um-region__count { display: none; }
    .d4-um-region__kunden { grid-template-columns: 1fr; padding-left: 0; }

    .d4-qa-section { padding: 32px var(--container-pad) 80px; }
    .d4-qa-grid { gap: 48px; }
    .d4-qa-cat__name { font-size: 28px; }
    .d4-qa-trigger__label { font-size: 18px; }
    .d4-qa-content__inner { padding-right: 0; }

    .d4-cta-block { padding: 72px var(--container-pad); }
    .d4-cta-block__headline { font-size: 36px; }

    .d4-kontakt-intro { padding: 24px var(--container-pad) 40px; }
    .d4-kontakt-intro__headline { font-size: 24px; }
    .d4-kontakt-form { padding: 56px var(--container-pad) 72px; }
    .d4-kontakt-form__intro h2 { font-size: 32px; }
    .d4-form { padding: 28px 24px; }
    .d4-form__row-2 { grid-template-columns: 1fr; gap: 16px; }

    .d4-ref-clients { padding: 72px var(--container-pad); }
    .d4-ref-clients__headline { font-size: 32px; }
    .d4-ref-contact { padding: 72px var(--container-pad); }
    .d4-ref-contact__headline { font-size: 32px; }

    .d4-footer { flex-direction: column; align-items: flex-start; padding: 32px var(--container-pad); }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .d4-highlight { background-size: 100% 100%; }
}

/* =========================================================
   BLOG — Listing + Single + Filter (an Referenzen-Look angeglichen)
   ========================================================= */

/* Intro-Section unter dem Page-Hero (analog .d4-ref-intro) */
.d4-blog-intro { padding: 40px var(--container-pad) 60px; }
.d4-blog-intro__headline {
    font-size: 36px;
    line-height: 1.3;
    margin: 0 0 16px;
    letter-spacing: -0.02em;
    max-width: 1100px;
    font-weight: 700;
}
.d4-blog-intro__subline {
    font-size: 22px;
    line-height: 1.55;
    margin: 0;
    max-width: 900px;
    color: var(--keck-ink);
}

/* Filter-Chips (Phase 3) – exakt im Referenzen-Stil */
.d4-blog-filter { padding: 20px var(--container-pad) 60px; display: flex; flex-wrap: wrap; gap: 12px; }
.d4-blog-filter__chip {
    padding: 10px 20px;
    border: 1.5px solid rgba(15, 15, 14, 0.18);
    background: transparent;
    color: var(--keck-ink);
    border-radius: 999px;
    font-size: 14px;
    text-decoration: none;
    transition: all 0.2s ease;
}
.d4-blog-filter__chip:hover { border-color: var(--keck-ink); }
.d4-blog-filter__chip.is-active {
    background: var(--keck-ink);
    color: #fff;
    border-color: var(--keck-ink);
}

/* Listing-Grid – wie .d4-ref-grid */
.d4-blog-list { padding: 0 var(--container-pad) 120px; }
.d4-blog-list__items {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 56px 32px;
}
.d4-blog-list__empty {
    font-size: 19px;
    color: var(--keck-muted);
    max-width: 600px;
}

/* Cards – Struktur wie .d4-proj-card mit Arrow-Badge */
.d4-blog-card { margin: 0; --accent: var(--keck-yellow); }
.d4-blog-card__link {
    display: block;
    color: var(--keck-ink);
    text-decoration: none;
}
.d4-blog-card__thumb {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: 8px;
    margin-bottom: 20px;
    background: var(--keck-surface-grey);
    position: relative;
}
.d4-blog-card__thumb img,
.d4-blog-card__thumb .wp-post-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.d4-blog-card__link:hover .d4-blog-card__thumb img,
.d4-blog-card__link:hover .d4-blog-card__thumb .wp-post-image {
    transform: scale(1.06);
}
.d4-blog-card__cat {
    font-size: 12px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--keck-muted);
    margin-bottom: 8px;
}
.d4-blog-card__title {
    font-family: var(--keck-font-display);
    font-size: 26px;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin: 0 0 12px;
}
.d4-blog-card__link:hover .d4-blog-card__title {
    text-decoration: underline;
    text-decoration-color: var(--accent);
    text-underline-offset: 6px;
    text-decoration-thickness: 3px;
}
.d4-blog-card__teaser {
    font-size: 16px;
    line-height: 1.55;
    color: var(--keck-ink);
    margin: 0 0 16px;
}
.d4-blog-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: var(--keck-muted);
    letter-spacing: 0.02em;
}

/* Arrow-Badge wie .d4-proj-card__arrow, scoped für Blog */
.d4-blog-card .d4-proj-card__arrow {
    position: absolute;
    right: 16px;
    bottom: 16px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--keck-ink);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 0;
    transform: translate(8px, 8px) scale(0.85);
    opacity: 0;
    transition: transform 0.35s ease, opacity 0.3s ease;
    box-shadow: 0 6px 20px rgba(15, 15, 14, 0.18);
    z-index: 2;
}
.d4-blog-card .d4-proj-card__arrow svg { display: block; }
.d4-blog-card__link:hover .d4-proj-card__arrow {
    opacity: 1;
    transform: translate(0, 0) scale(1);
}

/* Pagination */
.d4-blog-pagination {
    margin-top: 80px;
    display: flex;
    justify-content: center;
}
.d4-blog-pagination .nav-links {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}
.d4-blog-pagination .page-numbers {
    padding: 10px 16px;
    border: 1.5px solid var(--keck-line);
    border-radius: 999px;
    color: var(--keck-ink);
    text-decoration: none;
    font-size: 14px;
    line-height: 1;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.d4-blog-pagination .page-numbers:hover,
.d4-blog-pagination .page-numbers.current {
    background: var(--keck-ink);
    color: #fff;
    border-color: var(--keck-ink);
}

/* Single Blog Post */
.d4-blog-single__hero { padding: 100px var(--container-pad) 40px; }
.d4-blog-single__title {
    font-size: 64px;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin: 0 0 24px;
    max-width: 1100px;
}
.d4-blog-single__teaser {
    font-family: var(--keck-font-display);
    font-size: 24px;
    line-height: 1.4;
    margin: 0 0 24px;
    max-width: 820px;
    color: var(--keck-ink);
}
.d4-blog-single__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 14px;
    color: var(--keck-muted);
    letter-spacing: 0.02em;
}
.d4-blog-single__meta-author {
    font-weight: 700;
    color: var(--keck-ink);
}
.d4-blog-single__feature-img { padding: 24px var(--container-pad) 56px; }
.d4-blog-single__img-wrap {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: 12px;
    background: var(--keck-surface-grey-2);
}
.d4-blog-single__img-wrap img,
.d4-blog-single__img-wrap .wp-post-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.d4-blog-single__body { padding: 0 var(--container-pad) 96px; }
.d4-blog-single__body-inner {
    max-width: 820px;
    font-size: 19px;
    line-height: 1.7;
    color: var(--keck-ink);
}
.d4-blog-single__body-inner p { margin: 0 0 1.4em; }
.d4-blog-single__body-inner h2 {
    font-family: var(--keck-font-display);
    font-size: 36px;
    line-height: 1.2;
    margin: 56px 0 24px;
    letter-spacing: -0.02em;
}
.d4-blog-single__body-inner h3 {
    font-family: var(--keck-font-display);
    font-size: 26px;
    line-height: 1.25;
    margin: 40px 0 16px;
    letter-spacing: -0.015em;
}
.d4-blog-single__body-inner a {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 3px;
}
.d4-blog-single__body-inner blockquote {
    border-left: 4px solid var(--keck-ink);
    margin: 32px 0;
    padding: 16px 0 16px 28px;
    font-family: var(--keck-font-display);
    font-size: 22px;
    line-height: 1.5;
}
.d4-blog-single__body-inner ul,
.d4-blog-single__body-inner ol { padding-left: 24px; margin: 0 0 1.4em; }
.d4-blog-single__body-inner li { margin-bottom: 8px; }
.d4-blog-single__body-inner img { border-radius: 12px; }

.d4-blog-single__extra-imgs { padding: 0 var(--container-pad) 96px; }
.d4-blog-single__extra-imgs-grid {
    max-width: 1000px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}
.d4-blog-single__extra-img { margin: 0; }
.d4-blog-single__extra-img img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: 8px;
    display: block;
}
.d4-blog-single__extra-img figcaption {
    margin-top: 8px;
    font-size: 13px;
    color: var(--keck-muted);
}

.d4-blog-single__related-dark {
    padding: 64px var(--container-pad);
}
.d4-blog-single__related-dark .d4-service-row {
    grid-template-columns: 80px 1fr 1fr 120px;
}
/* Im Related-Block keinen Title-/Lead-Swap auf Hover (es gibt kein title-hover) */
.d4-blog-single__related-dark .d4-service-row:hover .d4-service-row__title-default { display: inline; }
.d4-blog-single__related-dark .d4-service-row:hover .d4-service-row__lead--default { display: block; }
.d4-blog-single__related-dark .d4-service-row__title { font-size: 32px; }
.d4-blog-single__back {
    padding: 80px var(--container-pad) 120px;
}

@media (max-width: 900px) {
    .d4-blog-list__items { grid-template-columns: repeat(2, 1fr); gap: 48px 32px; }
    .d4-blog-single__title { font-size: 44px; }
    .d4-blog-single__teaser { font-size: 20px; }
    .d4-blog-single__body-inner { font-size: 17px; }
    .d4-blog-single__body-inner h2 { font-size: 28px; margin: 40px 0 20px; }
    .d4-blog-single__extra-imgs-grid { grid-template-columns: 1fr; }
    .d4-blog-single__related-dark { padding: 40px var(--container-pad); }
    .d4-blog-single__related-dark .d4-service-row { grid-template-columns: 60px 1fr 80px; gap: 24px; }
    .d4-blog-single__related-dark .d4-service-row__body-col { display: none; }
    .d4-blog-single__related-dark .d4-service-row__title { font-size: 24px; }
}
@media (max-width: 640px) {
    .d4-blog-list__items { grid-template-columns: 1fr; gap: 48px; }
    .d4-blog-single__hero { padding: 64px var(--container-pad) 24px; }
    .d4-blog-single__title { font-size: 32px; }
    .d4-blog-single__body { padding: 0 var(--container-pad) 64px; }
    .d4-blog-single__img-wrap { aspect-ratio: 4 / 3; }
}

/* =========================================================
   Fade-in beim Hereinscrollen
   ========================================================= */
.is-fade {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
    will-change: opacity, transform;
}
.is-fade.is-visible {
    opacity: 1;
    transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
    .is-fade,
    .is-fade.is-visible {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* =========================================================
   Cursor-Punkt: invertiert die Fläche darunter zu Schwarz/Weiß
   ========================================================= */
.d4-cursor {
    transition: opacity 0.2s ease, width 0.2s ease, height 0.2s ease,
                margin 0.2s ease;
}
@supports (backdrop-filter: invert(1)) or (-webkit-backdrop-filter: invert(1)) {
    .d4-cursor {
        background: transparent;
        mix-blend-mode: normal;
        backdrop-filter: grayscale(1) invert(1) brightness(2.5) contrast(3);
        -webkit-backdrop-filter: grayscale(1) invert(1) brightness(2.5) contrast(3);
    }
}
.d4-cursor.is-hover {
    width: 40px;
    height: 40px;
    margin-left: -11px;
    margin-top: -11px;
}

/* =========================================================
   Aufzählungs-Nummern als Punkte
   ========================================================= */
.d4-service-row__num,
.d4-um-creds__num,
.d4-um-region__num,
.d4-qa-cat__num {
    display: inline-block;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    font-size: 0;
    line-height: 0;
    letter-spacing: 0;
    vertical-align: middle;
    flex-shrink: 0;
}
.d4-service-row__num,
.d4-um-creds__num {
    background: rgba(255, 255, 255, 0.6);
    transition: background 0.3s ease;
}
.d4-service-row:hover .d4-service-row__num {
    background: var(--accent);
}
.d4-um-region__num,
.d4-qa-cat__num {
    background: var(--keck-ink);
}

/* =========================================================
   Adresse als Google-Maps-Link
   ========================================================= */
.d4-address-link {
    color: inherit;
    text-decoration: none;
}
.d4-address-link:hover {
    text-decoration: underline;
    text-underline-offset: 4px;
}

/* =========================================================
   Leistungs-Unterseiten (Angebot > Sub)
   ========================================================= */
.d4-leistung-intro { padding: 40px var(--container-pad) 80px; }
.d4-leistung-intro__lead {
    font-family: var(--keck-font-display);
    font-size: 36px;
    line-height: 1.3;
    letter-spacing: -0.02em;
    max-width: 1100px;
    margin: 0;
}
.d4-leistung-body { padding: 40px var(--container-pad) 120px; }
.d4-leistung-body__inner { max-width: 960px; }
.d4-leistung-body__h2 {
    font-size: 44px;
    line-height: 1.15;
    margin: 0 0 24px;
    letter-spacing: -0.025em;
}
.d4-leistung-body__h2 + .d4-leistung-body__p { margin-top: 0; }
.d4-leistung-body__p {
    font-size: 22px;
    line-height: 1.5;
    margin: 0 0 56px;
    max-width: 900px;
}
.d4-leistung-body__p:last-child { margin-bottom: 0; }

.d4-leistung-refs { padding: 80px var(--container-pad) 120px; border-top: 1px solid var(--keck-line); }
.d4-leistung-refs__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 32px;
}

/* =========================================================
   Single Referenz – Projekt-Detailseite
   ========================================================= */
.d4-ref-single__hero {
    padding: 100px var(--container-pad) 40px;
}
.d4-ref-single__title {
    font-size: 88px;
    line-height: 1.0;
    letter-spacing: -0.03em;
    margin: 0;
    max-width: 1200px;
}
.d4-ref-single__media {
    padding: 24px var(--container-pad) 80px;
}
.d4-ref-single__media-grid {
    display: grid;
    gap: 64px;
    align-items: start;
}
.d4-ref-single__media-grid--two {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
}
.d4-ref-single__media-img {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: 12px;
    background: var(--keck-surface-grey-2);
}
.d4-ref-single__media-img img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.d4-ref-single__media-text {
    display: flex;
    flex-direction: column;
    gap: 40px;
    padding-top: 8px;
}
.d4-ref-single__header-text {
    font-family: var(--keck-font-display);
    font-size: 24px;
    line-height: 1.45;
    letter-spacing: -0.015em;
    color: var(--keck-ink);
    margin: 0;
}
.d4-ref-single__lead-row {
    padding: 0 var(--container-pad) 96px;
}
.d4-ref-single__lead {
    font-size: 56px;
    line-height: 1.15;
    letter-spacing: -0.025em;
    margin: 0;
    max-width: 1200px;
}
.d4-ref-single__link {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.d4-ref-single__link-label {
    font-size: 12px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--keck-muted);
}
.d4-ref-single__link-url {
    font-family: var(--keck-font-display);
    font-size: 22px;
    letter-spacing: -0.01em;
    color: var(--keck-ink);
    text-decoration: none;
    line-height: 1.3;
    transition: opacity 0.2s ease;
}
.d4-ref-single__link-url:hover { opacity: 0.7; }

.d4-ref-single__body {
    padding: 0 var(--container-pad) 96px;
}
.d4-ref-single__body-inner {
    max-width: 820px;
    font-size: 19px;
    line-height: 1.7;
    color: var(--keck-ink);
}
.d4-ref-single__body-inner p { margin: 0 0 24px; }
.d4-ref-single__body-inner p:last-child { margin-bottom: 0; }
.d4-ref-single__body-inner a { color: inherit; text-decoration: underline; text-underline-offset: 3px; }

.d4-ref-single__quote {
    background: var(--keck-ink);
    color: #fff;
    padding: 120px var(--container-pad);
}
.d4-ref-single__quote-text {
    font-size: 44px;
    line-height: 1.3;
    letter-spacing: -0.02em;
    margin: 0 0 40px;
    max-width: 1100px;
    color: #fff;
}
.d4-ref-single__quote-text::before { content: "« "; }
.d4-ref-single__quote-text::after  { content: " »"; }
.d4-ref-single__quote-author {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
}
.d4-ref-single__quote-line {
    width: 32px;
    height: 1.5px;
    background: rgba(255, 255, 255, 0.6);
    flex: 0 0 32px;
}

.d4-ref-single__back {
    padding: 80px var(--container-pad) 120px;
    border-top: 1px solid var(--keck-line);
}

@media (max-width: 900px) {
    .d4-ref-single__hero { padding: 72px var(--container-pad) 32px; }
    .d4-ref-single__title { font-size: 56px; }
    .d4-ref-single__media { padding: 16px var(--container-pad) 48px; }
    .d4-ref-single__media-grid--two { grid-template-columns: 1fr; gap: 32px; }
    .d4-ref-single__media-text { gap: 28px; padding-top: 0; }
    .d4-ref-single__header-text { font-size: 20px; }
    .d4-ref-single__lead-row { padding: 0 var(--container-pad) 64px; }
    .d4-ref-single__lead { font-size: 36px; }
    .d4-ref-single__quote { padding: 80px var(--container-pad); }
    .d4-ref-single__quote-text { font-size: 28px; }
    .d4-ref-single__body-inner { font-size: 17px; }
}
@media (max-width: 640px) {
    .d4-ref-single__title { font-size: 40px; }
    .d4-ref-single__lead { font-size: 28px; }
    .d4-ref-single__quote-text { font-size: 22px; }
}

/* =========================================================
   Legal-Seiten (Impressum, AGB, Datenschutz)
   ========================================================= */
.d4-legal { padding: 40px var(--container-pad) 120px; }
.d4-legal__inner { max-width: 800px; color: var(--keck-ink); }
.d4-legal__inner > *:first-child { margin-top: 0; }
.d4-legal__inner h2 {
    font-family: var(--keck-font-display);
    font-size: 28px;
    line-height: 1.25;
    letter-spacing: -0.02em;
    margin: 48px 0 16px;
}
.d4-legal__inner h3 {
    font-family: var(--keck-font-display);
    font-size: 22px;
    line-height: 1.3;
    letter-spacing: -0.015em;
    margin: 40px 0 12px;
}
.d4-legal__inner h2 + p,
.d4-legal__inner h3 + p { margin-top: 0; }
.d4-legal__inner p {
    font-size: 17px;
    line-height: 1.7;
    margin: 0 0 16px;
}
.d4-legal__inner ul,
.d4-legal__inner ol {
    font-size: 17px;
    line-height: 1.7;
    margin: 0 0 16px;
    padding-left: 24px;
}
.d4-legal__inner li { margin: 0 0 6px; }
.d4-legal__inner a {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 3px;
}
.d4-legal__inner a:hover { text-decoration: none; }
.d4-legal__inner a.btn-primary,
.d4-legal__inner a.btn-secondary { text-decoration: none; }
.d4-legal__inner p:has(> a.btn-secondary:only-child),
.d4-legal__inner p:has(> a.btn-primary:only-child) { margin: 24px 0 32px; }
.d4-legal__inner hr {
    border: 0;
    border-top: 1px solid var(--keck-line);
    margin: 56px 0;
}
.d4-legal__inner strong { font-weight: 700; }

@media (max-width: 900px) {
    .d4-leistung-intro__lead { font-size: 26px; }
    .d4-leistung-body__h2 { font-size: 32px; }
    .d4-leistung-body__p { font-size: 19px; margin-bottom: 40px; }
    .d4-leistung-refs__grid { grid-template-columns: repeat(2, 1fr); }
    .d4-legal__inner h2 { font-size: 24px; margin: 40px 0 12px; }
    .d4-legal__inner h3 { font-size: 20px; }
    .d4-legal__inner p,
    .d4-legal__inner ul,
    .d4-legal__inner ol { font-size: 16px; }
}
@media (max-width: 640px) {
    .d4-leistung-refs__grid { grid-template-columns: 1fr; }
}