/* ==========================================================================
   Apiverse Website
   Farben aus dem Logo: Magenta #DC50FF, Blau #2389F7, Cyan #14BEEB, Tinte #0B1130
   ========================================================================== */

@font-face {
    font-family: "Sora";
    src: url("fonts/sora-latin-wght-normal.woff2") format("woff2");
    font-weight: 100 800;
    font-display: swap;
}

@font-face {
    font-family: "Figtree";
    src: url("fonts/figtree-latin-wght-normal.woff2") format("woff2");
    font-weight: 300 900;
    font-display: swap;
}

:root {
    --bg: #f7f8fd;
    --tint: #eef1fb;
    --paper: #ffffff;
    --ink: #0b1130;
    --text: #2b3353;
    --muted: #5d6687;
    --line: rgb(11 17 48 / 0.1);
    --line-strong: rgb(11 17 48 / 0.2);
    --magenta: #dc50ff;
    --blue: #2389f7;
    --cyan: #14beeb;
    --blue-deep: #1a5fd0;
    --danger: #c4314b;
    --ok: #17a673;

    /* Verlauf wie im Logo; die dunklere Variante für Text und Flächen mit weißer Schrift. */
    --grad: linear-gradient(100deg, var(--magenta), var(--blue) 55%, var(--cyan));
    --grad-deep: linear-gradient(100deg, #b23be0, #1f6fe6 58%, #0a84b8);

    --shadow: 0 1px 2px rgb(11 17 48 / 0.04), 0 22px 50px -28px rgb(35 70 180 / 0.35);

    --font-display: "Sora", system-ui, -apple-system, "Segoe UI", sans-serif;
    --font-body: "Figtree", system-ui, -apple-system, "Segoe UI", sans-serif;

    --gutter: clamp(20px, 5vw, 56px);
    --radius: 28px;
    --radius-sm: 14px;
    --header-h: 76px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-h) + 20px);
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 1.0925rem;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
img { height: auto; }

h1, h2, h3 {
    margin: 0;
    color: var(--ink);
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.12;
    text-wrap: balance;
}

h1 { font-size: clamp(2.3rem, 5.4vw, 4.2rem); line-height: 1.06; letter-spacing: -0.04em; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.6rem); }
h3 { font-size: 1.2rem; letter-spacing: -0.02em; line-height: 1.3; }

p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
address { font-style: normal; }

a { color: var(--blue-deep); text-underline-offset: 0.2em; }
a:hover { color: var(--ink); }

:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; border-radius: 6px; }

.grad {
    background: var(--grad-deep);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.icon { width: 1.25em; height: 1.25em; flex: none; }

.skip-link {
    position: absolute;
    left: 16px;
    top: -60px;
    z-index: 100;
    padding: 10px 18px;
    border-radius: 999px;
    background: var(--ink);
    color: #fff;
}
.skip-link:focus { top: 12px; color: #fff; }

.container {
    width: 100%;
    max-width: 1200px;
    margin-inline: auto;
    padding-inline: var(--gutter);
}

/* --- Bausteine ----------------------------------------------------------- */

.label {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    color: var(--ink);
    font-family: var(--font-display);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.01em;
}
.label::before {
    content: "";
    width: 26px;
    height: 7px;
    border-radius: 99px;
    background: var(--grad);
}

.lead {
    max-width: 62ch;
    color: var(--muted);
    font-size: clamp(1.12rem, 1.5vw, 1.28rem);
    line-height: 1.6;
}

.dim { color: var(--muted); }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 15px 26px;
    border: 1.5px solid transparent;
    border-radius: 999px;
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.2;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.18s, box-shadow 0.18s, background-color 0.18s, border-color 0.18s;
}
.btn .icon { transition: transform 0.18s; }
.btn:hover .icon { transform: translateX(3px); }
.btn-sm { padding: 11px 20px; font-size: 0.875rem; }

.btn-primary { background: var(--ink); color: #fff; box-shadow: 0 14px 30px -16px rgb(11 17 48 / 0.7); }
.btn-primary:hover { background: #1b2452; color: #fff; transform: translateY(-1px); }

.btn-secondary { background: var(--paper); border-color: var(--line-strong); color: var(--ink); }
.btn-secondary:hover { border-color: var(--ink); color: var(--ink); }

.btn-light { background: #fff; color: var(--ink); }
.btn-light:hover { color: var(--ink); transform: translateY(-1px); }

.btn-outline-light { border-color: rgb(255 255 255 / 0.4); color: #fff; }
.btn-outline-light:hover { border-color: #fff; color: #fff; }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--ink);
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    background: var(--grad) 0 100% / 100% 2px no-repeat;
    padding-bottom: 5px;
}
.text-link .icon { transition: transform 0.18s; }
.text-link:hover .icon { transform: translateX(3px); }

/* Runder Icon-Träger mit Verlaufskontur. */
.ring {
    display: grid;
    place-items: center;
    width: 54px;
    height: 54px;
    border: 2px solid transparent;
    border-radius: 50%;
    background: linear-gradient(var(--paper), var(--paper)) padding-box, var(--grad) border-box;
    color: var(--ink);
}

.sheet {
    padding: clamp(24px, 3vw, 36px);
    border-radius: var(--radius);
    background: var(--paper);
    box-shadow: var(--shadow);
}

/* --- Header -------------------------------------------------------------- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgb(247 248 253 / 0.82);
    backdrop-filter: saturate(1.4) blur(14px);
    -webkit-backdrop-filter: saturate(1.4) blur(14px);
    transition: box-shadow 0.2s;
}
.site-header.is-scrolled { box-shadow: 0 1px 0 var(--line); }

.header-inner {
    display: flex;
    align-items: center;
    gap: 28px;
    height: var(--header-h);
}

.brand { flex: none; }
.brand img { width: 168px; }

.site-nav {
    display: flex;
    gap: 6px;
    margin-left: auto;
}
.site-nav a {
    padding: 8px 14px;
    border-radius: 999px;
    color: var(--text);
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
}
.site-nav a:hover { color: var(--ink); background: rgb(11 17 48 / 0.05); }
.site-nav a.active { color: var(--ink); background: var(--paper); box-shadow: 0 0 0 1px var(--line); }

.nav-toggle, .nav-burger { display: none; }

/* --- Abschnitte ---------------------------------------------------------- */

.section { padding-block: clamp(72px, 10vw, 132px); }
.section-tight { padding-block: clamp(40px, 6vw, 72px); }
.section-flush-top { padding-top: 0; }
.section-tint { background: var(--tint); }

.section-head { max-width: 780px; margin-bottom: clamp(36px, 5vw, 60px); }
.section-head .lead { margin-top: 20px; }
.section-more { margin-top: clamp(32px, 4vw, 48px); }

/* Zweispaltiges Raster: schmale Randspalte mit Rubrik, daneben der Inhalt. */
.rail {
    display: grid;
    grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
    gap: clamp(24px, 5vw, 72px);
}
.rail-side .label { position: sticky; top: calc(var(--header-h) + 28px); margin: 8px 0 0; }
.rail-main > * + * { margin-top: 24px; }
.rail-main > h2 { max-width: 20ch; }
.rail-main > p:not(.lead):not(.aside-note) { max-width: 68ch; }

.statement {
    max-width: 24ch !important;
    font-size: clamp(1.9rem, 4vw, 3.2rem);
    font-weight: 500;
    line-height: 1.14;
}
.statement .grad { display: block; }

.columns {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(20px, 3vw, 44px);
    margin-top: 36px !important;
}

.aside-note {
    max-width: 56ch;
    margin-top: 36px !important;
    padding-left: 22px;
    border-left: 4px solid transparent;
    border-image: linear-gradient(180deg, var(--magenta), var(--blue), var(--cyan)) 1;
    color: var(--ink);
    font-family: var(--font-display);
    font-size: 1.08rem;
    font-weight: 500;
    line-height: 1.5;
}

.minor { margin-top: 40px !important; color: var(--muted); font-size: 1rem; font-weight: 500; }

/* Nummerierte Liste mit feinen Trennlinien. */
.index { counter-reset: index; margin-top: 36px !important; border-top: 1px solid var(--line); }
.index li {
    counter-increment: index;
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    padding-block: 28px;
    border-bottom: 1px solid var(--line);
}
.index li::before {
    content: counter(index);
    grid-row: span 2;
    font-family: var(--font-display);
    font-size: 2.4rem;
    font-weight: 300;
    line-height: 1;
    background: var(--grad-deep);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.index h3 { margin-bottom: 8px; }
.index p { max-width: 62ch; color: var(--muted); }

.duo {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(32px, 6vw, 88px);
    align-items: center;
}
.duo > div > * + * { margin-top: 20px; }
.duo > div > .label + * { margin-top: 0; }
.duo .btn { margin-top: 32px; }
.duo-flip > :first-child { order: 2; }

/* --- Hero ---------------------------------------------------------------- */

.hero {
    position: relative;
    padding-block: clamp(48px, 8vw, 104px) clamp(48px, 7vw, 88px);
    overflow: hidden;
}

.hero-copy {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 900px;
    margin-inline: auto;
    text-align: center;
}
.hero-copy .label { margin-bottom: 24px; }
.hero-copy .lead { margin-top: 26px; }
.hero-copy .btn-row { justify-content: center; margin-top: 36px; }

.arc { position: absolute; pointer-events: none; }
.hero-arc { width: min(46vw, 560px); right: -12%; top: -8%; opacity: 0.16; }
.page-hero-arc { width: min(40vw, 420px); right: -6%; top: -18%; opacity: 0.16; }

/* Schaubild: Systeme links und rechts, Apiverse in der Mitte. */
.flow {
    position: relative;
    display: grid;
    grid-template-columns: auto minmax(48px, 1fr) auto minmax(48px, 1fr) auto;
    align-items: center;
    max-width: 1000px;
    margin: clamp(48px, 7vw, 84px) auto 0;
    padding-bottom: 44px;
}

.flow-col { display: grid; grid-template-rows: repeat(3, 80px); align-items: center; }
.flow-col li {
    padding: 11px 22px;
    border-radius: 999px;
    background: var(--paper);
    box-shadow: var(--shadow);
    color: var(--ink);
    font-family: var(--font-display);
    font-size: 0.92rem;
    font-weight: 500;
    white-space: nowrap;
}
.flow-col:first-child li { justify-self: end; }
.flow-col:last-child li { justify-self: start; }

.flow-lines { width: 100%; height: 240px; }
.flow-lines path { stroke-width: 2.5; stroke-linecap: round; vector-effect: non-scaling-stroke; }
.flow-dash path { stroke: var(--bg); stroke-dasharray: 4 44; animation: flow 2.4s linear infinite; }

@keyframes flow { to { stroke-dashoffset: -48; } }

.flow-hub {
    position: relative;
    display: grid;
    place-items: center;
    width: 156px;
    height: 156px;
    border-radius: 50%;
    background: var(--paper);
    box-shadow: var(--shadow), 0 0 0 12px rgb(255 255 255 / 0.55);
}
.flow-hub img { width: 96px; }

.flow-status {
    position: absolute;
    top: calc(100% + 26px);
    left: 50%;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    background: var(--paper);
    box-shadow: 0 0 0 1px var(--line);
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 500;
    white-space: nowrap;
    transform: translateX(-50%);
}
.flow-status i { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 4px rgb(23 166 115 / 0.18); }

.page-hero {
    position: relative;
    padding-block: clamp(56px, 8vw, 108px) clamp(48px, 7vw, 88px);
    overflow: hidden;
}
.page-hero .container { position: relative; }
.page-hero h1 { max-width: 17ch; font-size: clamp(2.1rem, 4.8vw, 3.7rem); }
.page-hero .lead { margin-top: 26px; }

/* --- Startseite ---------------------------------------------------------- */

.facts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.facts li { padding: 8px clamp(18px, 2.4vw, 34px); border-left: 1px solid var(--line); }
.facts li:first-child { padding-left: 0; border-left: 0; }
.facts h2 { margin: 22px 0 10px; font-size: 1.12rem; letter-spacing: -0.02em; line-height: 1.3; }
.facts p { color: var(--muted); font-size: 1rem; }

.models { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(16px, 2vw, 28px); }
.models .sheet { display: flex; flex-direction: column; }
.models h2, .models h3 { margin: 22px 0 10px; font-size: 1.45rem; }
.models p { color: var(--muted); font-size: 1rem; }
.models .layers { margin-top: auto; padding-top: 28px; }

.layers { display: grid; gap: 6px; }
.layers li {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 16px;
    border-radius: 12px;
    font-size: 0.88rem;
    font-weight: 500;
}
.layers em { font-style: normal; font-weight: 600; white-space: nowrap; }
.layers .is-cloud { background: #e8f2ff; color: #164a9e; }
.layers .is-local { background: var(--ink); color: #fff; }

.handover { position: relative; display: grid; gap: 14px; }
.handover li {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 20px 24px;
    border-radius: 22px;
    background: var(--paper);
    box-shadow: var(--shadow);
    color: var(--muted);
}
.handover .icon { width: 26px; height: 26px; color: var(--blue-deep); }
.handover strong { color: var(--ink); font-family: var(--font-display); font-weight: 600; }
.handover .is-you { background: var(--grad-deep); box-shadow: none; }
.handover .is-you .icon, .handover .is-you strong { color: #fff; }
.handover-wide { grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 40px !important; }

.trust { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px clamp(28px, 4vw, 56px); margin-top: 48px !important; }
.trust li { display: grid; grid-template-columns: 54px minmax(0, 1fr); gap: 20px; }
.trust h3 { margin: 4px 0 8px; }
.trust p { color: var(--muted); font-size: 1rem; }

.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chips li {
    padding: 11px 22px;
    border: 1.5px solid var(--line-strong);
    border-radius: 999px;
    color: var(--ink);
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 500;
}

/* --- Plattform ----------------------------------------------------------- */

.kit { display: grid; gap: 12px; }
.kit-row { display: flex; gap: 12px; }
.kit-block {
    flex: 1;
    display: grid;
    place-items: center;
    min-height: 84px;
    padding: 12px;
    border-radius: 20px;
    font-family: var(--font-display);
    font-size: 0.92rem;
    font-weight: 600;
    text-align: center;
}
.kit-block.is-std { background: var(--paper); box-shadow: var(--shadow); color: var(--ink); }
.kit-block.is-own { background: var(--grad-deep); color: #fff; }
.kit-block.is-free { border: 2px dashed var(--line-strong); color: var(--muted); }
.kit-note { margin-top: 8px; color: var(--muted); font-size: 0.92rem; }

.pulse { margin: 0; padding: clamp(24px, 3vw, 36px); border-radius: var(--radius); background: var(--paper); box-shadow: var(--shadow); }
.pulse-bars { display: flex; align-items: flex-end; gap: 4px; height: 150px; }
.pulse-bars i { flex: 1; height: var(--h); border-radius: 99px; background: #d5e2fb; }
.pulse-bars .is-flag { height: 100%; background: var(--magenta); }
.pulse-axis { display: flex; justify-content: space-between; margin-top: 12px; color: var(--muted); font-size: 0.8rem; }
.pulse figcaption { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 22px; color: var(--ink); font-size: 0.95rem; font-weight: 500; }
.pulse figcaption i { width: 10px; height: 10px; border-radius: 50%; background: var(--magenta); }
.pulse figcaption small { margin-left: auto; color: var(--muted); font-size: 0.8rem; font-weight: 400; }

/* --- Betriebsmodelle ----------------------------------------------------- */

.questions { margin-top: 32px !important; border-top: 1px solid var(--line); }
.questions li {
    position: relative;
    padding: 22px 0 22px 56px;
    border-bottom: 1px solid var(--line);
    color: var(--ink);
    font-size: 1.1rem;
    font-weight: 500;
}
.questions li::before {
    content: "?";
    position: absolute;
    left: 0;
    top: 20px;
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--paper);
    box-shadow: 0 0 0 1px var(--line);
    color: var(--blue-deep);
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
}

/* --- Services ------------------------------------------------------------ */

.services { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 48px clamp(28px, 4vw, 56px); }
.services li { padding-top: 28px; border-top: 1px solid var(--line); }
.services h2 { margin: 22px 0 10px; font-size: 1.3rem; letter-spacing: -0.02em; }
.services p { color: var(--muted); font-size: 1rem; }

/* --- Blog ---------------------------------------------------------------- */

.posts { border-top: 1px solid var(--line); }
.post {
    display: grid;
    grid-template-columns: 200px minmax(0, 1fr) auto;
    gap: clamp(16px, 3vw, 40px);
    align-items: center;
    padding-block: 30px;
    border-bottom: 1px solid var(--line);
    color: inherit;
    text-decoration: none;
}
.post h3 { margin-bottom: 6px; font-size: 1.35rem; }
.post p { color: var(--muted); font-size: 1rem; }
.post > .icon { width: 26px; height: 26px; color: var(--ink); transition: transform 0.18s; }
.post:hover > .icon { transform: translateX(5px); }
.post:hover h3 { color: var(--blue-deep); }

.post-meta { display: flex; flex-wrap: wrap; gap: 4px 14px; color: var(--muted); font-size: 0.9rem; }
.post .post-meta { flex-direction: column; }
.post-meta time { color: var(--ink); font-weight: 600; }

.empty { max-width: 620px; }
.empty p { margin: 14px 0 28px; color: var(--muted); }

.article-head { padding-block: clamp(40px, 6vw, 72px) clamp(28px, 4vw, 44px); }
.article-head .post-meta { margin: 36px 0 16px; }
.article-head h1 { max-width: 22ch; font-size: clamp(2rem, 4.4vw, 3.3rem); }

.article-body { max-width: 720px; padding-bottom: clamp(64px, 9vw, 112px); font-size: 1.14rem; }
.article-body > * + * { margin-top: 1.2em; }
.article-body h2 { margin-top: 2em; font-size: 1.6rem; }
.article-body h3 { margin-top: 1.8em; }
.article-body ul, .article-body ol { padding-left: 1.3em; list-style: revert; }
.article-body li + li { margin-top: 0.4em; }
.article-body img { border-radius: var(--radius-sm); }
.article-body blockquote { margin-inline: 0; padding-left: 22px; border-left: 4px solid var(--blue); color: var(--ink); }
.article-body code { padding: 2px 6px; border-radius: 6px; background: var(--tint); font-size: 0.9em; }
.article-body pre { padding: 18px 20px; border-radius: var(--radius-sm); background: var(--ink); color: #e8ecff; overflow-x: auto; }
.article-body pre code { padding: 0; background: none; }
.article-body table { width: 100%; border-collapse: collapse; font-size: 1rem; }
.article-body th, .article-body td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; }

/* --- Kontakt ------------------------------------------------------------- */

.contact-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 72px); align-items: start; }

.form { display: grid; gap: 20px; }
.field-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.field { display: grid; gap: 8px; }
.field label { color: var(--ink); font-size: 0.92rem; font-weight: 600; }
.optional { margin-left: 6px; color: var(--muted); font-weight: 400; }

.field input:not([type="checkbox"]), .field select, .field textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1.5px solid transparent;
    border-radius: var(--radius-sm);
    background: var(--bg);
    color: var(--ink);
    font: inherit;
    transition: border-color 0.15s, background-color 0.15s, box-shadow 0.15s;
}
.field textarea { resize: vertical; min-height: 140px; }
.field input:focus, .field select:focus, .field textarea:focus {
    outline: none;
    border-color: var(--blue);
    background: var(--paper);
    box-shadow: 0 0 0 4px rgb(35 137 247 / 0.16);
}
.field .invalid { border-color: var(--danger) !important; }
.validation-message { color: var(--danger); font-size: 0.88rem; }

.field-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.field-check { grid-template-columns: 22px minmax(0, 1fr); gap: 6px 12px; align-items: start; }
.field-check input { width: 20px; height: 20px; margin: 3px 0 0; accent-color: var(--blue-deep); }
.field-check label { color: var(--muted); font-size: 0.92rem; font-weight: 400; }
.field-check .validation-message { grid-column: 2; }

.form .btn { justify-self: start; margin-top: 4px; }
.form-error { padding: 12px 16px; border-radius: var(--radius-sm); background: #fdecef; color: var(--danger); }

.form-success > * + * { margin-top: 16px; }
.form-success h2 { font-size: 1.6rem; }
.form-success .btn { margin-top: 28px; }

.contact-aside { display: grid; gap: 36px; padding-top: 12px; }
.contact-aside h2 { margin: 18px 0 8px; font-size: 1.2rem; letter-spacing: -0.02em; }
.contact-aside p, .contact-aside address { color: var(--muted); font-size: 1rem; }
.contact-aside address { margin-top: 12px; }
.contact-aside .text-link { margin-top: 16px; }

/* --- Abschluss ----------------------------------------------------------- */

.cta { padding-block: clamp(24px, 4vw, 48px) clamp(72px, 9vw, 120px); }
.section-tint + .cta { padding-top: clamp(72px, 9vw, 120px); }

.cta-inner {
    position: relative;
    padding: clamp(36px, 6vw, 80px);
    border-radius: clamp(28px, 4vw, 44px);
    background: var(--ink);
    color: #c5cbe6;
    overflow: hidden;
}
.cta-inner > :not(.arc) { position: relative; }
.cta-inner h2 { max-width: 18ch; color: #fff; font-size: clamp(1.9rem, 4vw, 3.1rem); }
.cta-inner p { max-width: 54ch; margin-top: 20px; font-size: 1.12rem; }
.cta-inner .btn-row { margin-top: 36px; }
.cta-arc { width: min(52%, 520px); right: -8%; bottom: -34%; opacity: 0.9; }

.site-footer { border-top: 1px solid var(--line); background: var(--paper); font-size: 0.96rem; }
.footer-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
    gap: 40px clamp(24px, 4vw, 56px);
    padding-block: clamp(48px, 6vw, 72px) 40px;
}
.footer-brand img { width: 160px; }
.footer-brand p { max-width: 34ch; margin-top: 18px; color: var(--muted); }
.site-footer h2 { margin-bottom: 14px; font-size: 0.82rem; font-weight: 600; letter-spacing: 0.01em; }
.site-footer nav a { display: block; padding-block: 5px; color: var(--muted); text-decoration: none; }
.site-footer nav a:hover { color: var(--ink); }
.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px 32px;
    padding-block: 22px 28px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.88rem;
}

/* --- Textseiten ---------------------------------------------------------- */

.legal { padding-top: clamp(48px, 7vw, 88px); }
.prose { max-width: 820px; }
.prose h1 { font-size: clamp(2rem, 4.4vw, 3.2rem); }
.prose .lead { margin-top: 22px; }
.prose h2 { margin: 44px 0 12px; font-size: 1.3rem; letter-spacing: -0.02em; }
.prose ul { padding-left: 1.2em; list-style: disc; margin-top: 28px; }
.prose li + li { margin-top: 8px; }
.prose .btn { margin-top: 32px; }
.prose .dim { margin-top: 40px; font-size: 0.92rem; }

/* --- Einblenden beim Scrollen -------------------------------------------- */

.js [data-reveal] { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.js [data-reveal].is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .js [data-reveal] { opacity: 1; transform: none; transition: none; }
    .flow-dash path { animation: none; }
    .btn, .btn .icon, .text-link .icon, .post > .icon { transition: none; }
}

/* --- Kleinere Bildschirme ------------------------------------------------ */

@media (max-width: 1020px) {
    .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 40px; }
    .facts li:nth-child(odd) { padding-left: 0; border-left: 0; }
    .models { grid-template-columns: 1fr; }
    .services { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .handover-wide { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
    .nav-burger {
        display: grid;
        gap: 5px;
        order: 3;
        margin-left: 4px;
        padding: 12px 8px;
        cursor: pointer;
    }
    .nav-burger span { width: 24px; height: 2px; border-radius: 2px; background: var(--ink); transition: transform 0.2s, opacity 0.2s; }
    .nav-toggle { display: block; position: absolute; opacity: 0; pointer-events: none; }
    .nav-toggle:focus-visible ~ .nav-burger { outline: 3px solid var(--blue); outline-offset: 2px; border-radius: 8px; }
    .nav-toggle:checked ~ .nav-burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-toggle:checked ~ .nav-burger span:nth-child(2) { opacity: 0; }
    .nav-toggle:checked ~ .nav-burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    .header-inner { gap: 12px; }
    .header-cta { margin-left: auto; }

    .site-nav {
        display: none;
        position: absolute;
        top: var(--header-h);
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 2px;
        padding: 12px var(--gutter) 24px;
        background: var(--bg);
        box-shadow: 0 24px 40px -24px rgb(11 17 48 / 0.3);
    }
    .nav-toggle:checked ~ .site-nav { display: flex; }
    .site-nav a { padding: 14px 16px; font-size: 1.05rem; }

    .rail { grid-template-columns: 1fr; gap: 0; }
    .rail-side .label { position: static; margin: 0 0 20px; }
    .duo, .contact-grid { grid-template-columns: 1fr; }
    .duo-flip > :first-child { order: 0; }
    .columns { grid-template-columns: 1fr; }
    .post { grid-template-columns: minmax(0, 1fr) auto; }
    .post .post-meta { grid-column: 1 / -1; flex-direction: row; }

    /* Schaubild gestapelt: Systeme oben, Apiverse in der Mitte, Systeme unten. */
    .flow { display: flex; flex-direction: column; align-items: center; padding-bottom: 0; }
    .flow-lines, .flow-status { display: none; }
    .flow-col { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
    .flow-col li { padding: 9px 16px; font-size: 0.85rem; }
    .flow-hub { width: 124px; height: 124px; margin-block: 44px; }
    .flow-hub img { width: 76px; }
    .flow-hub::before, .flow-hub::after {
        content: "";
        position: absolute;
        left: 50%;
        width: 3px;
        height: 26px;
        margin-left: -1.5px;
        border-radius: 3px;
        background: linear-gradient(180deg, var(--magenta), var(--blue));
    }
    .flow-hub::before { bottom: calc(100% + 9px); }
    .flow-hub::after { top: calc(100% + 9px); background: linear-gradient(180deg, var(--blue), var(--cyan)); }
}

@media (max-width: 640px) {
    body { font-size: 1.04rem; }
    .brand img { width: 136px; }
    .header-cta { display: none; }
    .nav-burger { margin-left: auto; }
    .facts, .services, .trust, .field-row, .handover-wide { grid-template-columns: 1fr; }
    .facts li { padding-left: 0; border-left: 0; }
    .index li { grid-template-columns: 48px minmax(0, 1fr); }
    .index li::before { font-size: 1.9rem; }
    .footer-grid { grid-template-columns: 1fr; }
    .cta-arc { opacity: 0.35; }
    .hero-arc, .page-hero-arc { opacity: 0.1; }
    .hero-copy .label::before { display: none; }
    .btn-row .btn { flex: 1 1 100%; }
}