```css
/* =========================
   BJÖRN MALM – STYLE.CSS
   ========================= */

:root {
    --blue: #062b5f;
    --orange: #f05a1a;
    --cream: #f3eee6;
    --white: #ffffff;
    --black: #111111;
    --soft-border: #ddd4c8;
    --shadow: 0 24px 55px rgba(0, 0, 0, 0.14);
    --shadow-small: 0 12px 30px rgba(0, 0, 0, 0.10);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--cream);
    color: var(--black);
    font-family: Arial, Helvetica, sans-serif;
    font-size: 18px;
    line-height: 1.65;
}

/* =========================
   HEADER / MENY
   ========================= */

.site-header {
    width: 100%;
    min-height: 110px;
    padding: 24px 6%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--cream);
    border-bottom: 1px solid var(--soft-border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    font-family: Georgia, serif;
    font-size: 34px;
    line-height: 0.86;
    font-weight: 900;
    text-decoration: none;
    color: var(--blue);
    letter-spacing: 1px;
}

.logo span {
    color: var(--orange);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 30px;
    flex-wrap: wrap;
}

.main-nav a {
    color: var(--blue);
    text-decoration: none;
    text-transform: uppercase;
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 3px;
    transition: color 0.25s ease, transform 0.25s ease;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--orange);
    transform: translateY(-2px);
}

/* =========================
   HERO STARTSIDA
   ========================= */

.hero {
    min-height: calc(100vh - 110px);
    display: grid;
    grid-template-columns: 42% 58%;
    border-bottom: 1px solid var(--soft-border);
}

.hero-text {
    padding: 12vh 7% 8vh 7%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.overline,
.eyebrow {
    color: var(--orange);
    font-weight: 900;
    letter-spacing: 6px;
    text-transform: uppercase;
    font-size: 15px;
    margin-bottom: 30px;
}

.hero h1,
.sub-hero h1 {
    font-family: Georgia, serif;
    font-size: clamp(76px, 9vw, 150px);
    line-height: 0.88;
    color: var(--blue);
    margin: 0 0 34px 0;
}

.hero h1 span,
.sub-hero h1 span,
h1 span {
    color: var(--orange);
}

.lead {
    font-family: Georgia, serif;
    font-size: clamp(26px, 2.4vw, 40px);
    line-height: 1.25;
    color: var(--blue);
    margin: 0 0 28px 0;
}

.hero-text p {
    max-width: 650px;
    font-size: 20px;
}

.hero-image {
    height: 100%;
    overflow: hidden;
}

.hero-image img {
    width: 100%;
    height: 100%;
    min-height: calc(100vh - 110px);
    object-fit: cover;
    object-position: center;
    display: block;
    box-shadow: var(--shadow);
}

/* =========================
   KNAPPAR
   ========================= */

.buttons {
    margin-top: 38px;
    display: flex;
    gap: 22px;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 18px 34px;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 15px;
    font-weight: 900;
    transition: all 0.25s ease;
}

.btn.primary {
    background: var(--orange);
    color: var(--white);
    border: 3px solid var(--orange);
}

.btn.secondary {
    background: transparent;
    color: var(--blue);
    border: 3px solid var(--blue);
}

.btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-small);
}

/* =========================
   KATEGORIKORT STARTSIDA
   ========================= */

.category-grid,
.work-grid {
    width: 86%;
    max-width: 1700px;
    margin: 90px auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 42px;
}

.category-card,
.work-card {
    background: var(--white);
    color: var(--black);
    text-decoration: none;
    display: block;
    overflow: hidden;
    border-top: 7px solid var(--orange);
    box-shadow: var(--shadow-small);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.category-card:hover,
.work-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
}

.category-card img,
.work-card img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    display: block;
    transition: transform 0.45s ease, filter 0.45s ease;
}

.category-card:hover img,
.work-card:hover img {
    transform: scale(1.045);
    filter: contrast(1.08);
}

.category-card div,
.work-card div,
.work-card-content {
    padding: 28px 30px 34px 30px;
}

.category-card h2,
.work-card h2,
.work-card h3 {
    font-family: Georgia, serif;
    color: var(--blue);
    font-size: 38px;
    line-height: 1.1;
    margin: 0 0 14px 0;
}

.category-card p,
.work-card p {
    font-size: 18px;
    margin: 0;
}

/* =========================
   UNDERSIDOR HERO
   ========================= */

.sub-hero {
    padding: 90px 0 120px 0;
}

.sub-hero-content {
    width: 72%;
    max-width: 1300px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 58% 42%;
    gap: 80px;
    align-items: center;
}

.sub-hero-text p {
    max-width: 720px;
    font-size: 21px;
}

.sub-hero-image img {
    width: 100%;
    max-height: 420px;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: var(--shadow);
    display: block;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.sub-hero-image img:hover {
    transform: scale(1.03);
    box-shadow: 0 35px 80px rgba(0, 0, 0, 0.20);
}

/* =========================
   INNEHÅLL
   ========================= */

.content-section {
    width: 72%;
    max-width: 1200px;
    margin: 0 auto 120px auto;
}

.content-section h2 {
    font-family: Georgia, serif;
    color: var(--blue);
    font-size: clamp(42px, 4vw, 72px);
    line-height: 1;
    margin: 80px 0 30px 0;
}

.content-section h3 {
    font-family: Georgia, serif;
    color: var(--blue);
    font-size: 34px;
    margin-top: 40px;
}

.content-section p,
.content-section li {
    font-size: 20px;
    max-width: 850px;
}

.content-section a {
    color: var(--blue);
    font-weight: 700;
}

.content-section a:hover {
    color: var(--orange);
}

/* =========================
   FORMULÄR
   ========================= */

form {
    max-width: 850px;
    margin-top: 25px;
}

input,
textarea {
    width: 100%;
    padding: 16px;
    margin: 8px 0 18px 0;
    border: 2px solid var(--soft-border);
    background: var(--white);
    font-size: 18px;
}

textarea {
    min-height: 180px;
}

button,
input[type="submit"] {
    background: var(--orange);
    color: var(--white);
    padding: 16px 32px;
    border: none;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 2px;
    cursor: pointer;
}

/* =========================
   FOOTER
   ========================= */

.site-footer,
footer {
    background: var(--black);
    color: var(--white);
    padding: 44px 6%;
    font-size: 16px;
}

.site-footer p,
footer p {
    margin: 0;
}

/* =========================
   GENERELLA BILDER
   ========================= */

img {
    max-width: 100%;
}

.content-section img,
.work-grid img,
.category-grid img {
    box-shadow: var(--shadow-small);
}

/* =========================
   MOBIL / RESPONSIVT
   ========================= */

@media (max-width: 1100px) {
    .site-header {
        align-items: flex-start;
        flex-direction: column;
        gap: 24px;
    }

    .main-nav {
        gap: 20px;
    }

    .hero {
        grid-template-columns: 1fr;
    }

    .hero-text {
        padding: 70px 8%;
    }

    .hero-image img {
        min-height: 520px;
    }

    .sub-hero-content {
        grid-template-columns: 1fr;
        width: 84%;
    }

    .category-grid,
    .work-grid {
        grid-template-columns: repeat(2, 1fr);
        width: 88%;
    }
}

@media (max-width: 700px) {
    body {
        font-size: 17px;
    }

    .site-header {
        padding: 24px 8%;
        position: relative;
    }

    .logo {
        font-size: 38px;
    }

    .main-nav {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .main-nav a {
        font-size: 17px;
        letter-spacing: 3px;
    }

    .hero h1,
    .sub-hero h1 {
        font-size: 74px;
    }

    .lead {
        font-size: 28px;
    }

    .hero-text p,
    .sub-hero-text p,
    .content-section p {
        font-size: 18px;
    }

    .category-grid,
    .work-grid {
        grid-template-columns: 1fr;
        width: 88%;
        gap: 34px;
    }

    .category-card img,
    .work-card img {
        height: 260px;
    }

    .content-section {
        width: 86%;
    }

    .content-section h2 {
        font-size: 46px;
    }

    .buttons {
        flex-direction: column;
        align-items: flex-start;
    }
}
```