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

:root {
    --primary: #091838;
    --text: #0f172a;
    --text-secondary: #475569;
    --border: #e2e8f0;
    --bg-light: #f8fafc;
    --white: #ffffff;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--white);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

address {
    font-style: normal;
}

fieldset {
    border: none;
    margin: 0;
    padding: 0;
}

legend {
    display: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Header */
header {
    position: sticky;
    top: 0;
    z-index: 40;
    background-color: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

header > div {
    max-width: 64rem;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

header > div > div {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 0;
}

header svg {
    color: var(--primary);
    width: 2rem;
    height: 2rem;
    flex-shrink: 0;
}

header h1 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin: 0;
}

header nav {
    display: flex;
    gap: 2rem;
    font-size: 0.95rem;
    flex-shrink: 0;
}

header nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

header nav a:hover {
    color: var(--primary);
}

@media (max-width: 640px) {
    header > div {
        padding: 0.75rem 1rem;
        gap: 1rem;
    }

    header svg {
        width: 1.75rem;
        height: 1.75rem;
    }

    header h1 {
        font-size: 1rem;
    }

    header nav {
        gap: 1rem;
        font-size: 0.875rem;
    }
}

/* Hero Section */
main > section:first-of-type {
    background: linear-gradient(135deg, var(--primary) 0%, #0d2847 100%);
    color: var(--white);
    padding: 4rem 1.5rem;
    text-align: center;
}

main > section:first-of-type > div {
    max-width: 64rem;
    margin: 0 auto;
}

main > section:first-of-type h2 {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.2;
}

main > section:first-of-type p {
    margin-top: 1rem;
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
}

main > section:first-of-type a {
    display: inline-block;
    margin-top: 1.75rem;
    background-color: var(--white);
    color: var(--primary);
    font-weight: 600;
    padding: 0.75rem 2rem;
    font-size: 0.95rem;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

main > section:first-of-type a:hover {
    background-color: var(--bg-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

@media (min-width: 640px) {
    main > section:first-of-type {
        padding: 6rem 1.5rem;
    }

    main > section:first-of-type h2 {
        font-size: 2.5rem;
    }
}

@media (min-width: 1024px) {
    main > section:first-of-type {
        padding: 8rem 1.5rem;
    }

    main > section:first-of-type h2 {
        font-size: 3.5rem;
    }
}

/* Services Section */
main > section:nth-of-type(2) {
    padding: 3rem 1.5rem;
}

main > section:nth-of-type(2) > div {
    max-width: 64rem;
    margin: 0 auto;
}

main > section:nth-of-type(2) h2 {
    font-size: 2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text);
}

main > section:nth-of-type(2) > div > div {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

main > section:nth-of-type(2) article {
    border: 1px solid var(--border);
    padding: 1.5rem;
    border-radius: 0.75rem;
    background: var(--white);
    transition: all 0.3s ease;
}

main > section:nth-of-type(2) article:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(9, 24, 56, 0.08);
    transform: translateY(-2px);
}

main > section:nth-of-type(2) article h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

main > section:nth-of-type(2) article p {
    margin-top: 0.75rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

@media (min-width: 640px) {
    main > section:nth-of-type(2) {
        padding: 4rem 1.5rem;
    }

    main > section:nth-of-type(2) h2 {
        font-size: 2.25rem;
        margin-bottom: 3rem;
    }

    main > section:nth-of-type(2) > div > div {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }

    main > section:nth-of-type(2) article {
        padding: 2rem;
    }
}

@media (min-width: 1024px) {
    main > section:nth-of-type(2) > div > div {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* About Section */
main > section:nth-of-type(3) {
    padding: 3rem 1.5rem;
    background-color: var(--bg-light);
}

main > section:nth-of-type(3) > div {
    max-width: 64rem;
    margin: 0 auto;
}

main > section:nth-of-type(3) > div > div {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

main > section:nth-of-type(3) h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 1.25rem;
}

main > section:nth-of-type(3) > div > div > div {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

main > section:nth-of-type(3) p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

main > section:nth-of-type(3) img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 0.75rem;
}

@media (min-width: 640px) {
    main > section:nth-of-type(3) {
        padding: 4rem 1.5rem;
    }

    main > section:nth-of-type(3) h2 {
        font-size: 2.25rem;
    }
}

@media (min-width: 1024px) {
    main > section:nth-of-type(3) > div > div {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
        align-items: center;
    }

    main > section:nth-of-type(3) h2 {
        font-size: 2.25rem;
        margin-bottom: 1.5rem;
    }
}

/* Contact Section */
main > section:nth-of-type(4) {
    padding: 3rem 1.5rem;
}

main > section:nth-of-type(4) > div {
    max-width: 64rem;
    margin: 0 auto;
}

main > section:nth-of-type(4) > div > div {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

main > section:nth-of-type(4) address h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1.25rem;
}

main > section:nth-of-type(4) address > div:first-of-type {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

main > section:nth-of-type(4) address > div:first-of-type p:first-child {
    font-weight: 700;
    color: var(--text);
    font-size: 1rem;
}

main > section:nth-of-type(4) address a {
    color: var(--primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

main > section:nth-of-type(4) address a:hover {
    text-decoration: underline;
}

main > section:nth-of-type(4) address > div:nth-of-type(2) {
    margin-top: 1.5rem;
}

main > section:nth-of-type(4) address iframe {
    width: 100%;
    height: 300px;
    border: none;
    display: block;
    border-radius: 0.75rem;
}

main > section:nth-of-type(4) form > fieldset > div:first-of-type {
    margin-bottom: 1.25rem;
}

main > section:nth-of-type(4) form h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

main > section:nth-of-type(4) label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.5rem;
}

main > section:nth-of-type(4) input,
main > section:nth-of-type(4) textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    font-size: 0.95rem;
    font-family: inherit;
    background-color: var(--white);
    transition: all 0.3s ease;
}

main > section:nth-of-type(4) input:focus,
main > section:nth-of-type(4) textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(9, 24, 56, 0.1);
}

main > section:nth-of-type(4) textarea {
    resize: vertical;
}

main > section:nth-of-type(4) button {
    width: 100%;
    background-color: var(--primary);
    color: var(--white);
    padding: 0.75rem;
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

main > section:nth-of-type(4) button:hover {
    background-color: #0a1f2e;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(9, 24, 56, 0.2);
}

@media (min-width: 640px) {
    main > section:nth-of-type(4) {
        padding: 4rem 1.5rem;
    }

    main > section:nth-of-type(4) address h3,
    main > section:nth-of-type(4) form h3 {
        font-size: 1.75rem;
    }

    main > section:nth-of-type(4) address iframe {
        height: 350px;
    }
}

@media (min-width: 1024px) {
    main > section:nth-of-type(4) > div > div {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
    }
}

footer {
    background-color: var(--primary);
    color: var(--white);
    padding: 2rem 1.5rem;
    border-top: 1px solid #0a1f2e;
    text-align: center;
    font-size: 0.875rem;
}

footer > div {
    max-width: 64rem;
    margin: 0 auto;
}