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

body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: #0f172a;
    background-color: #f1f5f9;
    line-height: 1.6;
}

a {
    color: #0ea5e9;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
}

/* Header */

.kfu-header {
    background: #020617;
    border-bottom: 1px solid #0f172a;
    position: sticky;
    top: 0;
    z-index: 50;
}

.kfu-header-inner {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.kfu-logo a {
    display: flex;
    flex-direction: column;
    font-weight: 700;
    color: #e5e7eb;
}

.kfu-logo-main {
    font-size: 1.15rem;
}

.kfu-logo-main span {
    font-weight: 400;
}

.kfu-logo-sub {
    font-size: 0.75rem;
    color: #9ca3af;
}

/* Navigation */

.kfu-nav {
    display: flex;
}

.kfu-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 1.5rem;
    font-size: 0.95rem;
}

.kfu-menu > li > a {
    color: #e5e7eb;
    font-weight: 500;
}

.kfu-menu > li > a:hover {
    color: #38bdf8;
}

.kfu-menu li {
    position: relative;
}

.kfu-menu li ul {
    position: absolute;
    top: 100%;
    right: 0;
    background: #020617;
    border: 1px solid #111827;
    padding: 0.5rem 0;
    min-width: 200px;
    display: none;
    z-index: 40;
}

.kfu-menu li:hover > ul {
    display: block;
}

.kfu-menu li ul a {
    display: block;
    padding: 0.4rem 0.75rem;
    font-size: 0.9rem;
    color: #e5e7eb;
}

/* Mobile-Navigation */

.kfu-nav-toggle {
    display: none;
    background: none;
    border: none;
    padding: 0.25rem;
    cursor: pointer;
}

.kfu-nav-toggle-bar {
    width: 20px;
    height: 2px;
    background: #e5e7eb;
    display: block;
    margin: 4px 0;
}

@media (max-width: 768px) {
    .kfu-nav {
        position: absolute;
        top: 56px;
        right: 0;
        left: 0;
        background: #020617;
        border-bottom: 1px solid #111827;
        display: none;
        flex-direction: column;
        padding: 0.5rem 1rem 1rem;
    }

    .kfu-nav.is-open {
        display: flex;
    }

    .kfu-menu {
        flex-direction: column;
        gap: 0.75rem;
    }

    .kfu-menu li ul {
        position: static;
        border: none;
        background: transparent;
        padding-left: 1rem;
    }

    .kfu-nav-toggle {
        display: block;
    }
}

/* Layout */

.kfu-main {
    max-width: 1120px;
    margin: 0 auto;
    padding: 1.5rem 1rem 3rem;
}

/* Hero */

.kfu-hero {
    padding: 2.5rem 1.75rem 3rem;
    border-radius: 1.5rem;
    margin-top: 1.5rem;
    background: radial-gradient(circle at top left, #e0f2fe 0%, #f9fafb 45%, #f1f5f9 100%);
    color: #0f172a;
    border: 1px solid #e2e8f0;
}

.kfu-hero-inner {
    max-width: 1120px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(0, 3fr) minmax(0, 2.2fr);
    gap: 2.5rem;
    align-items: center;
}

.kfu-hero-text h1 {
    font-size: 2.2rem;
    margin-bottom: 0.85rem;
    color: #0f172a;
}

.kfu-hero-subheadline {
    font-size: 1rem;
    color: #1f2933;
    margin-bottom: 1.1rem;
}

.kfu-hero-bullets {
    list-style: none;
    padding: 0;
    margin: 0 0 1.25rem 0;
    color: #111827;
    font-size: 0.95rem;
}

.kfu-hero-bullets li {
    margin-bottom: 0.25rem;
}

.kfu-trust-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.kfu-trust-label {
    font-size: 0.8rem;
    background: #ecfdf5;
    border: 1px solid #bbf7d0;
    color: #166534;
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
}

.kfu-hero-box {
    background: #f9fafb;
    color: #0f172a;
    border-radius: 1rem;
    padding: 1.5rem 1.75rem;
    box-shadow: 0 20px 55px rgba(15, 23, 42, 0.45);
}

.kfu-hero-box-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.7rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    background: #0f766e;
    color: #ecfdf5;
    margin-bottom: 0.7rem;
}

.kfu-hero-box h2 {
    font-size: 1.2rem;
    margin: 0 0 0.75rem;
}

.kfu-hero-box ol {
    margin: 0 0 1.1rem 1.1rem;
    padding: 0;
    font-size: 0.92rem;
    color: #4b5563;
}

.kfu-hero-note {
    font-size: 0.78rem;
    color: #6b7280;
    margin-top: 0.9rem;
}

/* Buttons */

.kfu-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.65rem 1.4rem;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-decoration: none;
    white-space: nowrap;
}

.kfu-btn-hero {
    font-size: 1rem;
}

.kfu-btn-primary {
    background: linear-gradient(135deg, #10b981, #0ea5e9);
    color: #ecfdf5;
    box-shadow: 0 12px 30px rgba(15, 118, 110, 0.35);
}

.kfu-btn-primary:hover {
    filter: brightness(1.05);
    text-decoration: none;
}

.kfu-btn-secondary {
    background: #020617;
    color: #e5e7eb;
}

.kfu-btn-outline {
    background: #ffffff;
    border: 1px solid #cbd5f5;
    color: #0f172a;
}

.kfu-btn-outline:hover {
    border-color: #0ea5e9;
    color: #0ea5e9;
    text-decoration: none;
}

.kfu-btn-block {
    width: 100%;
    justify-content: center;
}

.kfu-btn-cta-bar {
    padding-left: 1.9rem;
    padding-right: 1.9rem;
}

@media (max-width: 900px) {
    .kfu-hero-inner {
        grid-template-columns: 1fr;
    }
}

/* Sections */

.kfu-section-header {
    text-align: left;
    margin: 2.5rem 0 1.5rem;
}

.kfu-section-header h2 {
    font-size: 1.4rem;
    margin: 0 0 0.5rem;
    color: #0f172a;
}

.kfu-section-header p {
    margin: 0;
    color: #4b5563;
    font-size: 0.95rem;
}

/* Bankenübersicht */

.kfu-banken {
    margin-top: 2.5rem;
}

.kfu-banken-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.6rem;
}

@media (max-width: 900px) {
    .kfu-banken-grid {
        grid-template-columns: 1fr;
    }
}

.kfu-bank-card {
    background: #ffffff;
    border-radius: 0.9rem;
    padding: 1.3rem 1.3rem 1.5rem;
    box-shadow: 0 14px 35px rgba(15, 23, 42, 0.09);
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
    border: 1px solid #e5e7eb;
}

.kfu-bank-card-highlight {
    border-color: #0f766e;
    box-shadow: 0 18px 40px rgba(15, 118, 110, 0.25);
    position: relative;
}

.kfu-bank-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.kfu-bank-logo {
    height: 40px;
    display: flex;
    align-items: center;
}

.kfu-bank-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.7rem;
    border-radius: 999px;
    background: #e0f2fe;
    color: #0f172a;
}

.kfu-bank-card h3 {
    margin: 0;
    font-size: 1.05rem;
    color: #0f172a;
}

.kfu-bank-card p {
    margin: 0;
    font-size: 0.9rem;
    color: #4b5563;
}

.kfu-bank-features {
    list-style: none;
    margin: 0.3rem 0 0.9rem;
    padding: 0;
    font-size: 0.85rem;
    color: #0f172a;
}

.kfu-bank-features li {
    margin-bottom: 0.2rem;
}

.kfu-bank-features li::before {
    content: "• ";
    color: #0ea5e9;
}

.kfu-bank-cta-row {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.kfu-bank-rating {
    font-size: 0.8rem;
    color: #facc15;
}

/* CTA Bar */

.kfu-cta-bar {
    margin-top: 2.5rem;
}

.kfu-cta-bar-inner {
    border-radius: 1rem;
    padding: 1.4rem 1.6rem;
    background: linear-gradient(120deg, #020617, #0f172a);
    color: #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.3rem;
}

.kfu-cta-bar-text h2 {
    margin: 0 0 0.4rem;
    font-size: 1.2rem;
}

.kfu-cta-bar-text p {
    margin: 0;
    font-size: 0.92rem;
    color: #cbd5f5;
}

@media (max-width: 768px) {
    .kfu-cta-bar-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Testimonials */

.kfu-testimonials {
    margin-top: 2.8rem;
}

.kfu-testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0,1fr));
    gap: 1.6rem;
}

@media (max-width: 900px) {
    .kfu-testimonials-grid {
        grid-template-columns: 1fr;
    }
}

.kfu-testimonial-item {
    background: #ffffff;
    border-radius: 0.9rem;
    padding: 1.3rem;
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.06);
    border: 1px solid #e2e8f0;
}

.kfu-testimonial-stars {
    font-size: 0.9rem;
    color: #facc15;
    margin-bottom: 0.4rem;
}

.kfu-testimonial-text {
    font-size: 0.92rem;
    color: #111827;
    margin: 0 0 0.5rem;
}

.kfu-testimonial-author {
    font-size: 0.85rem;
    color: #64748b;
    margin: 0;
}

/* Gütesiegel */

.kfu-siegel {
    margin-top: 2.8rem;
}

.kfu-siegel-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0,1fr));
    gap: 1.6rem;
}

@media (max-width: 900px) {
    .kfu-siegel-grid {
        grid-template-columns: 1fr;
    }
}

.kfu-siegel-item {
    background: #ffffff;
    border-radius: 0.9rem;
    padding: 1.3rem;
    text-align: left;
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.06);
    border: 1px solid #e5e7eb;
}

.kfu-siegel-item h3 {
    margin: 0.6rem 0 0.3rem;
    font-size: 1rem;
    color: #0f172a;
}

/* FAQ */

.kfu-faq-preview {
    margin-top: 2.8rem;
}

.kfu-faq-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0,1fr));
    gap: 1.3rem;
}

@media (max-width: 900px) {
    .kfu-faq-grid {
        grid-template-columns: 1fr;
    }
}

.kfu-faq-item {
    background: #f9fafb;
    border-radius: 0.8rem;
    padding: 1.1rem;
    border: 1px solid #e5e7eb;
}

.kfu-faq-item h3 {
    margin-top: 0;
    font-size: 0.98rem;
    color: #0f172a;
}

/* Content-Bereich */

.kfu-content-section {
    margin-top: 2.8rem;
}

.kfu-content-inner {
    background: #ffffff;
    border-radius: 0.9rem;
    padding: 1.5rem;
    box-shadow: 0 10px 28px rgba(15, 23, 42, 0.05);
}

/* Default-Seiten */

.kfu-default-page {
    background: #ffffff;
    border-radius: 0.9rem;
    padding: 1.5rem;
    box-shadow: 0 10px 28px rgba(15, 23, 42, 0.05);
}

.kfu-article-title {
    margin-top: 0;
}

/* Footer */

.kfu-footer {
    background: #020617;
    color: #e5e7eb;
    padding: 2rem 1rem 1rem;
    margin-top: 3rem;
}

.kfu-footer-inner {
    max-width: 1120px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, minmax(0,1fr));
    gap: 1.5rem;
    font-size: 0.9rem;
}

.kfu-footer-col h4 {
    margin-top: 0;
    font-size: 0.95rem;
}

.kfu-footer a {
    color: #93c5fd;
}

.kfu-footer-bottom {
    max-width: 1120px;
    margin: 1.5rem auto 0;
    border-top: 1px solid #111827;
    padding-top: 0.75rem;
    font-size: 0.8rem;
    text-align: center;
}

@media (max-width: 900px) {
    .kfu-footer-inner {
        grid-template-columns: 1fr;
    }
}