* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
    color: #ffffff;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-repeat: no-repeat;
    position: relative;
}

.overlay-bg {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.72);
    z-index: 0;
    pointer-events: none;
}

.main-content {
    position: relative;
    z-index: 1;
    min-height: 100vh;
}

.hero-section {
    min-height: 360px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px 6% 70px;
    text-align: center;
}

.hero-content {
    width: 100%;
    max-width: 1000px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.breadcrumbs {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 24px;
    font-size: 13px;
    font-weight: 400;
    letter-spacing: 0.04em;
    color: rgba(255, 255, 255, 0.55);
}

.breadcrumbs a {
    color: rgba(255, 255, 255, 0.82);
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumbs a:hover {
    color: #ffffff;
}

.breadcrumbs span {
    color: rgba(255, 255, 255, 0.42);
}

.hero-title {
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(38px, 5vw, 68px);
    font-weight: 400;
    line-height: 1.08;
    letter-spacing: -0.025em;
    max-width: 850px;
    color: #ffffff;
}

.struktur-container {
    width: min(1200px, 88%);
    margin: 0 auto;
    padding: 10px 0 100px;
    display: flex;
    flex-direction: column;
    gap: 36px;
}

.pdf-card {
    width: 100%;
    background: rgba(15, 15, 15, 0.82);
    border: 1px solid rgba(255, 255, 255, 0.11);
    border-radius: 2px;
    overflow: hidden;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.28);
}

.pdf-card-header {
    padding: 38px 42px 28px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.pdf-card-header h2 {
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(25px, 3vw, 34px);
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: -0.015em;
    color: #ffffff;
    margin-bottom: 12px;
}

.pdf-card-header p {
    max-width: 850px;
    color: rgba(255, 255, 255, 0.52);
    font-size: 14px;
    line-height: 1.8;
    font-weight: 400;
}

.pdf-actions {
    padding: 22px 42px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 22px;
    border-radius: 1px;
    text-decoration: none;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.035em;
    transition:
        background 0.3s ease,
        color 0.3s ease,
        border-color 0.3s ease,
        transform 0.3s ease;
}

.btn-view {
    background: #ffffff;
    color: #111111;
    border: 1px solid #ffffff;
}

.btn-view:hover {
    background: transparent;
    color: #ffffff;
    transform: translateY(-1px);
}

.btn-download {
    background: transparent;
    color: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.btn-download:hover {
    border-color: rgba(255, 255, 255, 0.55);
    color: #ffffff;
    transform: translateY(-1px);
}

.pdf-preview {
    width: 100%;
    height: 600px;
    background: #111111;
}

.pdf-preview iframe {
    display: block;
    width: 100%;
    height: 100%;
    border: none;
    background: #ffffff;
}

@media (max-width: 900px) {
    .hero-section {
        min-height: 320px;
        padding: 90px 5% 60px;
    }

    .struktur-container {
        width: 90%;
        padding-bottom: 80px;
        gap: 28px;
    }

    .pdf-card-header {
        padding: 32px 30px 24px;
    }

    .pdf-actions {
        padding: 20px 30px;
    }

    .pdf-preview {
        height: 520px;
    }
}

@media (max-width: 600px) {
    body {
        background-attachment: scroll;
    }

    .overlay-bg {
        background: rgba(0, 0, 0, 0.76);
    }

    .hero-section {
        min-height: 290px;
        padding: 80px 20px 50px;
    }

    .breadcrumbs {
        font-size: 12px;
        gap: 8px;
        margin-bottom: 18px;
    }

    .hero-title {
        font-size: 38px;
        line-height: 1.12;
    }

    .struktur-container {
        width: calc(100% - 32px);
        padding-bottom: 60px;
        gap: 22px;
    }

    .pdf-card {
        border-radius: 2px;
    }

    .pdf-card-header {
        padding: 26px 22px 22px;
    }

    .pdf-card-header h2 {
        font-size: 25px;
        line-height: 1.25;
    }

    .pdf-card-header p {
        font-size: 13px;
        line-height: 1.7;
    }

    .pdf-actions {
        padding: 18px 22px;
        flex-direction: column;
        align-items: stretch;
        gap: 9px;
    }

    .btn {
        width: 100%;
        min-height: 46px;
    }

    .pdf-preview {
        height: 430px;
    }
}

@media (max-width: 380px) {
    .hero-section {
        padding-left: 16px;
        padding-right: 16px;
    }

    .hero-title {
        font-size: 34px;
    }

    .struktur-container {
        width: calc(100% - 24px);
    }

    .pdf-card-header {
        padding: 24px 18px 20px;
    }

    .pdf-actions {
        padding: 16px 18px;
    }

    .pdf-preview {
        height: 380px;
    }
}