/* About Sertechnik — brand authority page */
.about-sertechnik {
    --as-accent: #1b6a92;
    --as-accent-dark: #0f3d56;
    --as-accent-deep: #08283a;
    --as-surface: #f4f8fb;
    --as-border: #d8e6ef;
    --as-text: #2a2a2a;
    --as-muted: #5a6b75;
}

.about-sertechnik-hero .container {
    position: relative;
}

.about-sertechnik-hero .container::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(
        105deg,
        rgba(8, 40, 58, 0.92) 0%,
        rgba(8, 40, 58, 0.78) 45%,
        rgba(8, 40, 58, 0.22) 100%
    );
    pointer-events: none;
}

.about-sertechnik-hero picture {
    position: relative;
    z-index: 0;
    display: block;
}

.about-sertechnik-hero .masthead__info {
    z-index: 2;
    bottom: auto;
    left: 5%;
    top: 50%;
    transform: translateY(-50%);
    max-width: 40rem;
    padding-right: 1rem;
}

.about-sertechnik-hero .masthead__info h1 {
    margin: 0 0 1rem;
    font-size: clamp(1.85rem, 3vw, 2.65rem);
    line-height: 1.18;
    font-style: italic;
    color: #fff;
    font-family: "santral-bold", sans-serif;
}

.about-sertechnik-hero .about-sertechnik-hero__lead {
    margin: 0 0 1.35rem;
    max-width: 34rem;
    font-size: clamp(0.92rem, 1.3vw, 1.05rem);
    line-height: 1.65;
    color: rgba(255, 255, 255, 0.92);
}

.about-sertechnik-hero__badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem 0.6rem;
    margin: 0 0 1.5rem;
    padding: 0;
    list-style: none;
}

.about-sertechnik-hero__badges li {
    display: inline-flex;
    align-items: center;
    padding: 0.38rem 0.72rem;
    font-size: 0.76rem;
    line-height: 1.35;
    font-weight: 600;
    color: #fff;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 999px;
    backdrop-filter: blur(4px);
}

.about-sertechnik-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.about-sertechnik-stats {
    background: var(--as-accent-deep);
    color: #fff;
    padding: 0;
    margin-top: -1px;
}

.about-sertechnik-stats__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    margin: 0;
    padding: 0;
    list-style: none;
}

.about-sertechnik-stats__item {
    padding: 1.35rem 1.25rem;
    text-align: center;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.about-sertechnik-stats__item:last-child {
    border-right: none;
}

.about-sertechnik-stats__value {
    display: block;
    font-size: clamp(1.35rem, 2.2vw, 1.75rem);
    font-weight: 700;
    line-height: 1.2;
    color: #fff;
    font-style: italic;
    margin-bottom: 0.35rem;
}

.about-sertechnik-stats__label {
    display: block;
    font-size: 0.78rem;
    line-height: 1.4;
    color: rgba(255, 255, 255, 0.72);
    max-width: 11rem;
    margin: 0 auto;
}

.about-sertechnik-body {
    padding: 3rem 0 2rem;
    background: #eef3f7;
}

.about-sertechnik-body .inner-container {
    padding: 0;
}

.about-sertechnik-layout {
    display: grid;
    grid-template-columns: minmax(0, 15.5rem) minmax(0, 1fr);
    gap: 2rem;
    align-items: start;
}

.about-sertechnik-sidebar {
    position: sticky;
    top: 1.25rem;
}

.about-sertechnik-nav {
    background: #fff;
    border: 1px solid var(--as-border);
    border-radius: 10px;
    padding: 1.25rem 1.15rem;
    box-shadow: 0 4px 18px rgba(15, 61, 86, 0.06);
}

.about-sertechnik-nav__title {
    margin: 0 0 0.85rem;
    font-size: 0.82rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--as-accent-dark);
}

.about-sertechnik-nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.about-sertechnik-nav a {
    display: block;
    padding: 0.42rem 0;
    font-size: 0.88rem;
    line-height: 1.4;
    color: var(--as-accent);
    text-decoration: none;
    border-bottom: 1px solid #edf2f6;
    transition: color 0.2s ease, padding-left 0.2s ease;
}

.about-sertechnik-nav li:last-child a {
    border-bottom: none;
}

.about-sertechnik-nav a:hover {
    color: var(--as-accent-dark);
    padding-left: 0.25rem;
}

.about-sertechnik-main {
    min-width: 0;
}

.about-sertechnik-panel {
    background: #fff;
    border: 1px solid var(--as-border);
    border-radius: 12px;
    box-shadow: 0 6px 28px rgba(15, 61, 86, 0.06);
    overflow: hidden;
}

.about-sertechnik-panel__inner {
    padding: 2rem 2.25rem;
}

.about-sertechnik-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    padding: 1.75rem 2rem;
    background: linear-gradient(135deg, #f7fbfd 0%, #eef5fa 100%);
    border-bottom: 1px solid var(--as-border);
}

.about-sertechnik-brand__logo img {
    display: block;
    height: 3.25rem;
    width: auto;
    max-width: 200px;
}

.about-sertechnik-brand__divider {
    width: 1px;
    height: 2.5rem;
    background: var(--as-border);
}

.about-sertechnik-brand__tagline {
    margin: 0;
    font-size: 0.88rem;
    line-height: 1.5;
    color: var(--as-muted);
    text-align: center;
    max-width: 14rem;
}

.about-sertechnik-section {
    padding: 2.25rem 0;
    border-bottom: 1px solid var(--as-border);
}

.about-sertechnik-section:first-of-type {
    padding-top: 0;
}

.about-sertechnik-section:last-of-type {
    border-bottom: none;
    padding-bottom: 0;
}

.about-sertechnik-section__eyebrow {
    display: inline-block;
    margin: 0 0 0.5rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--as-accent);
}

.about-sertechnik-section h2 {
    margin: 0 0 1.15rem;
    font-size: clamp(1.35rem, 2vw, 1.65rem);
    line-height: 1.25;
    font-style: italic;
    color: var(--as-accent-dark);
}

.about-sertechnik-section p {
    margin: 0 0 1rem;
    font-size: 0.97rem;
    line-height: 1.7;
    color: var(--as-text);
}

.about-sertechnik-section p:last-child {
    margin-bottom: 0;
}

.about-sertechnik-section a {
    color: var(--as-accent);
    font-weight: 600;
    text-decoration: none;
}

.about-sertechnik-section a:hover {
    text-decoration: underline;
}

.about-sertechnik-quote {
    margin: 1.35rem 0 0;
    padding: 1.15rem 1.35rem;
    background: linear-gradient(135deg, #f4f9fc 0%, #e8f2f8 100%);
    border-left: 4px solid var(--as-accent);
    border-radius: 0 8px 8px 0;
}

.about-sertechnik-quote p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.65;
    color: var(--as-accent-dark);
}

.about-sertechnik-figure {
    margin: 2rem 0;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 12px 36px rgba(15, 61, 86, 0.12);
}

.about-sertechnik-figure img,
.about-sertechnik-figure video {
    display: block;
    width: 100%;
    height: auto;
}

.about-sertechnik-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin: 1.75rem 0 0;
}

.about-sertechnik-split__media {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(15, 61, 86, 0.1);
}

.about-sertechnik-split__media img,
.about-sertechnik-split__media video {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}

.about-sertechnik-split__caption {
    margin: 0.5rem 0 0;
    font-size: 0.8rem;
    color: var(--as-muted);
    text-align: center;
}

.about-sertechnik-pillars {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    margin: 1.25rem 0 1rem;
    padding: 0;
    list-style: none;
}

.about-sertechnik-pillars li {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    padding: 0.85rem 1rem;
    background: var(--as-surface);
    border: 1px solid var(--as-border);
    border-radius: 8px;
    font-size: 0.9rem;
    line-height: 1.45;
    color: var(--as-text);
}

.about-sertechnik-pillars li::before {
    content: "";
    flex-shrink: 0;
    width: 0.45rem;
    height: 0.45rem;
    margin-top: 0.45rem;
    border-radius: 50%;
    background: var(--as-accent);
}

.about-sertechnik-pillars li:nth-child(1),
.about-sertechnik-pillars li:nth-child(2) {
    background: #fff;
    border-left: 3px solid var(--as-accent);
}

.about-sertechnik-cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.15rem;
    margin: 1.75rem 0 0;
}

.about-sertechnik-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--as-border);
    border-radius: 10px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    height: 100%;
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.about-sertechnik-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 32px rgba(15, 61, 86, 0.12);
    border-color: #b8d4e4;
    text-decoration: none;
    color: inherit;
}

.about-sertechnik-card img {
    width: 100%;
    aspect-ratio: 8 / 5;
    object-fit: cover;
    object-position: center;
    display: block;
    background: var(--as-surface);
}

.about-sertechnik-card__body {
    padding: 1.1rem 1.15rem 1.25rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.about-sertechnik-card__body h3 {
    margin: 0 0 0.45rem;
    font-size: 1.02rem;
    line-height: 1.3;
    color: var(--as-accent-dark);
}

.about-sertechnik-card__body p {
    margin: 0 0 0.75rem;
    font-size: 0.88rem;
    line-height: 1.55;
    color: var(--as-muted);
    flex: 1;
}

.about-sertechnik-card__link {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--as-accent);
}

.about-sertechnik-card:hover .about-sertechnik-card__link {
    color: var(--as-accent-dark);
}

.about-sertechnik-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    margin: 1.15rem 0 1rem;
    padding: 0;
    list-style: none;
}

.about-sertechnik-tags li {
    padding: 0.5rem 0.9rem;
    font-size: 0.82rem;
    font-weight: 600;
    line-height: 1.35;
    color: var(--as-accent-dark);
    background: var(--as-surface);
    border: 1px solid var(--as-border);
    border-radius: 999px;
}

.about-sertechnik-tags li:nth-child(-n+3) {
    background: #e8f2f8;
    border-color: #b8d4e4;
}

.about-sertechnik-proof {
    padding: 3.5rem 0;
    background: linear-gradient(160deg, var(--as-accent-deep) 0%, #0d4a66 100%);
    color: #fff;
}

.about-sertechnik-proof__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    padding: 0 2.5rem;
}

.about-sertechnik-proof__content {
    min-width: 0;
}

.about-sertechnik-proof__eyebrow {
    display: block;
    margin: 0 0 0.65rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
}

.about-sertechnik-proof h2 {
    margin: 0 0 1.15rem;
    font-size: clamp(1.4rem, 2.2vw, 1.85rem);
    line-height: 1.25;
    font-style: italic;
    color: #fff;
}

.about-sertechnik-proof p,
.about-sertechnik-proof__content p {
    margin: 0 0 1rem;
    font-size: 0.95rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.85);
}

.about-sertechnik-proof__highlight {
    margin: 1rem 0 1.5rem;
    padding: 1rem 0 0;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.55;
    color: #fff;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.about-sertechnik-proof__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.7rem 1.35rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    color: #fff;
    font-size: 0.9rem;
    text-decoration: none;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.about-sertechnik-proof__cta:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    color: #fff;
    text-decoration: none;
}

.about-sertechnik-proof__media {
    min-width: 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 48px rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.about-sertechnik-proof__media video {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    background: #000;
}

.about-sertechnik-proof__caption {
    display: block;
    margin: 0.6rem 0 0;
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.5);
    text-align: center;
}

.about-sertechnik-cta {
    padding: 3.5rem 0 4rem;
    background: #eef3f7;
}

.about-sertechnik-cta__panel {
    text-align: center;
    padding: 2.75rem 2rem;
    background: linear-gradient(135deg, #fff 0%, #f7fbfd 100%);
    border: 1px solid var(--as-border);
    border-radius: 14px;
    box-shadow: 0 10px 40px rgba(15, 61, 86, 0.08);
}

.about-sertechnik-cta__panel h2 {
    max-width: 36rem;
    margin: 0 auto 1rem;
    font-size: clamp(1.35rem, 2.2vw, 1.75rem);
    line-height: 1.28;
    font-style: italic;
    color: var(--as-accent-dark);
}

.about-sertechnik-cta__panel p {
    max-width: 40rem;
    margin: 0 auto 1.75rem;
    font-size: 0.97rem;
    line-height: 1.65;
    color: var(--as-muted);
}

.about-sertechnik-cta__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    justify-content: center;
}

.about-sertechnik-cta__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.75rem;
    padding: 0.7rem 1.45rem;
    font-size: 0.92rem;
    font-weight: 700;
    text-decoration: none;
    border-radius: 4px;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.about-sertechnik-cta__btn--primary {
    color: #fff;
    background: var(--as-accent);
    border: 2px solid var(--as-accent);
}

.about-sertechnik-cta__btn--primary:hover {
    background: var(--as-accent-dark);
    border-color: var(--as-accent-dark);
    color: #fff;
    text-decoration: none;
    transform: translateY(-1px);
}

.about-sertechnik-cta__btn--secondary {
    color: var(--as-accent-dark);
    background: #fff;
    border: 2px solid var(--as-border);
}

.about-sertechnik-cta__btn--secondary:hover {
    border-color: var(--as-accent);
    color: var(--as-accent);
    text-decoration: none;
    transform: translateY(-1px);
}

@media (max-width: 991px) {
    .about-sertechnik-layout {
        grid-template-columns: 1fr;
    }

    .about-sertechnik-sidebar {
        position: static;
    }

    .about-sertechnik-nav ul {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0 1rem;
    }

    .about-sertechnik-nav a {
        border-bottom: none;
        padding: 0.35rem 0;
    }

    .about-sertechnik-stats__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-sertechnik-stats__item:nth-child(2) {
        border-right: none;
    }

    .about-sertechnik-stats__item {
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .about-sertechnik-stats__item:nth-last-child(-n+2) {
        border-bottom: none;
    }

    .about-sertechnik-cards {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .about-sertechnik-proof__grid {
        grid-template-columns: 1fr;
        padding: 0 1.5rem;
        gap: 2rem;
    }

    .about-sertechnik-split {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 671px) {
    .about-sertechnik-hero .container::before {
        background: linear-gradient(
            180deg,
            rgba(8, 40, 58, 0.9) 0%,
            rgba(8, 40, 58, 0.6) 55%,
            rgba(8, 40, 58, 0.28) 100%
        );
    }

    .about-sertechnik-hero .masthead__info {
        left: 8%;
        top: auto;
        bottom: 12%;
        transform: none;
        max-width: calc(100% - 2rem);
    }

    .about-sertechnik-hero__actions {
        flex-direction: column;
    }

    .about-sertechnik-hero__actions .home-hero__cta {
        width: 100%;
    }

    .about-sertechnik-body {
        padding: 2rem 0 1.5rem;
    }

    .about-sertechnik-panel__inner {
        padding: 1.5rem 1.25rem;
    }

    .about-sertechnik-brand {
        padding: 1.35rem 1rem;
        gap: 1rem;
    }

    .about-sertechnik-brand__divider {
        width: 3rem;
        height: 1px;
    }

    .about-sertechnik-nav ul {
        grid-template-columns: 1fr;
    }

    .about-sertechnik-proof__grid {
        padding: 0 1rem;
        gap: 1.5rem;
    }

    .about-sertechnik-stats__grid {
        grid-template-columns: 1fr;
    }

    .about-sertechnik-stats__item {
        border-right: none;
    }

    .about-sertechnik-pillars {
        grid-template-columns: 1fr;
    }

    .about-sertechnik-cards {
        grid-template-columns: 1fr;
    }

    .about-sertechnik-cta__actions {
        flex-direction: column;
        align-items: stretch;
    }

    .about-sertechnik-cta__btn {
        width: 100%;
    }
}