/* ── Reset ── */
 *,
 *::before,
 *::after {
     box-sizing: border-box;
     margin: 0;
     padding: 0;
 }

 /* ── Base ── */
 html {
     --header-height: 7rem;
     --header-offset-extra: -4rem;
     --header-offset: calc(var(--header-height) + var(--header-offset-extra));
     font-size: 16px;
     scroll-behavior: smooth;
     scroll-padding-top: var(--header-offset);
 }

 body {
     font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
     line-height: 1.6;
     color: #1a1a1a;
     background-color: #ffffff;
     min-height: 100vh;
     display: flex;
     flex-direction: column;
 }

 /* ── Layout ── */
 .container {
     max-width: 960px;
     margin: 0 auto;
     padding: 2rem;
 }

 header {
     position: sticky;
     top: 0;
     z-index: 1000;
     padding: 1.5rem 2rem;
     background-color: rgba(248, 249, 250, 0.95);
     backdrop-filter: blur(4px);
     border-bottom: 1px solid #e9ecef;
 }

 header .container {
     display: flex;
     align-items: center;
     justify-content: space-between;
     gap: 1.5rem;
     flex-wrap: wrap;
 }

 .menu-list {
     display: flex;
     list-style: none;
     gap: 1rem;
 }

 .menu-list a {
     color: #0d3b66;
     font-weight: 600;
 }

 main {
     flex: 1;
     max-width: 960px;
     width: 100%;
     margin: 0 auto;
     padding: 2rem;
     color: #0d3b66;
 }

 footer {
     padding: 1.5rem 2rem;
     background-color: #f8f9fa;
     border-top: 1px solid #e9ecef;
     text-align: center;
     font-size: 0.875rem;
     color: #6c757d;
 }

 /* ── Typography ── */
 h1,
 h2,
 h3,
 h4,
 h5,
 h6 {
     line-height: 1.25;
     margin-bottom: 0.75rem;
 }

 p {
     margin-bottom: 1rem;
 }

 a {
     color: #0070f3;
     text-decoration: none;
 }

 a:hover {
     text-decoration: underline;
 }

 section {
     scroll-margin-top: var(--header-offset);
     margin-bottom: 2rem;
 }

.contact-form {
    margin-top: 1rem;
    max-width: 640px;
    display: grid;
    gap: 0.6rem;
}

.contact-form label {
    font-weight: 600;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    border: 1px solid #b7c4d1;
    border-radius: 0.4rem;
    padding: 0.65rem 0.75rem;
    font: inherit;
    color: #1a1a1a;
    background-color: rgba(255, 255, 255, 0.96);
}

.contact-form textarea {
    resize: vertical;
    min-height: 130px;
}

.contact-form button {
    width: fit-content;
    margin-top: 0.25rem;
    border: 0;
    border-radius: 999px;
    padding: 0.6rem 1.1rem;
    background-color: #0d3b66;
    color: #ffffff;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

.contact-form button:hover {
    background-color: #0a2f52;
}

 @media (max-width: 700px) {
     header {
         padding: 1rem;
     }

     header .container {
         align-items: flex-start;
         gap: 0.75rem;
         padding: 0;
     }

     .menu-list {
         flex-wrap: wrap;
         gap: 0.5rem;
     }

     .menu-list a {
         display: block;
         padding: 0.35rem 0.6rem;
         border-radius: 999px;
         background-color: rgba(13, 59, 102, 0.08);
     }

     main {
         padding: 1.25rem;
     }

     section {
         scroll-margin-top: var(--header-offset);
     }

     .contact-form button {
         width: 100%;
     }
 }