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

body {
    font-family: 'Open Sans', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #222;
    background-color: #faf6ee;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: #1f4d3a;
}

a:hover {
    text-decoration: none;
}

h1, h2, h3 {
    font-family: 'Open Sans', sans-serif;
    color: #15201b;
    margin-bottom: 15px;
    line-height: 1.2;
}

h1 {
    font-size: 36px;
}

h2 {
    font-size: 28px;
}

h3 {
    font-size: 20px;
}

p {
    margin-bottom: 15px;
}

ul, ol {
    list-style: none;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: #1f4d3a;
    color: #fff;
    padding: 10px 15px;
    text-decoration: none;
}

.skip-link:focus {
    left: 10px;
    top: 10px;
    z-index: 1000;
}

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

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 10px;
}

#student-banner {
    background-color: #15201b;
    color: #fbe7c2;
    text-align: center;
    padding: 8px 15px;
    font-size: 14px;
}

#student-banner p {
    margin: 0;
}

.header {
    background-color: #ffffff;
    border-bottom: 2px solid #1f4d3a;
    padding: 15px 0;
}

.header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    display: inline-block;
    text-decoration: none;
}

.logo img {
    height: 56px;
    width: auto;
}

.menu-btn {
    background: #1f4d3a;
    color: #fff;
    border: none;
    padding: 8px 14px;
    font-size: 14px;
    cursor: pointer;
    border-radius: 4px;
}

.nav {
    width: 100%;
    display: none;
    margin-top: 15px;
}

.nav.open {
    display: block;
}

.nav ul li a {
    display: block;
    padding: 10px 5px;
    color: #15201b;
    text-decoration: none;
    border-bottom: 1px solid #e6dfcf;
}

.nav ul li a:hover,
.nav ul li a.current {
    color: #1f4d3a;
    background-color: #f3ecdc;
}

.btn {
    display: inline-block;
    background-color: #b85a00;
    color: #fff;
    padding: 12px 22px;
    text-decoration: none;
    border-radius: 4px;
    font-weight: bold;
    margin-right: 8px;
    margin-bottom: 8px;
}

.btn:hover {
    background-color: #8e4500;
}

.btn-small {
    padding: 6px 14px;
    font-size: 14px;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 12px;
    font-weight: bold;
    color: #b85a00;
    margin-bottom: 12px;
}

.section {
    padding: 60px 0;
}

.section-light {
    background-color: #f3ecdc;
}

.section-lead {
    font-size: 17px;
    margin-bottom: 30px;
    max-width: 700px;
}

.page-header {
    background-color: #1f4d3a;
    color: #fdf3d8;
    padding: 60px 0;
    border-bottom: 6px solid #b85a00;
}

.page-header h1 {
    color: #ffffff;
    font-size: 36px;
    margin-bottom: 18px;
}

.page-header .eyebrow {
    color: #f7c878;
}

.page-header .lead {
    font-size: 17px;
    max-width: 700px;
    color: #f4ecd6;
}

.tiers {
    display: block;
    margin-top: 25px;
}

.tier {
    background-color: #ffffff;
    border: 1px solid #e0d8c2;
    border-radius: 6px;
    padding: 28px 24px;
    margin-bottom: 18px;
    text-align: center;
    position: relative;
    display: flex;
    flex-direction: column;
}

.tier-featured {
    border: 2px solid #b85a00;
    background-color: #fff8ec;
}

.badge {
    background-color: #b85a00;
    color: #fff;
    display: inline-block;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.amount {
    font-family: Georgia, serif;
    font-size: 42px;
    color: #1f4d3a;
    margin-bottom: 0;
    line-height: 1;
    font-weight: bold;
}

.amount-sub {
    color: #b85a00;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 16px;
    font-weight: bold;
}

.tier h3 {
    color: #1f4d3a;
    margin-bottom: 8px;
}

.tier p {
    text-align: left;
}

.tier > p:first-child,
.tier .amount,
.tier .amount-sub,
.tier h3 {
    text-align: center;
}

.tier .btn {
    margin-top: auto;
    align-self: center;
}

.vol-grid {
    display: block;
}

.vol-image {
    margin-top: 25px;
}

.vol-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    border: 4px solid #fff;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.steps {
    counter-reset: step;
    margin-bottom: 25px;
}

.steps li {
    counter-increment: step;
    padding: 14px 14px 14px 56px;
    margin-bottom: 10px;
    background-color: #ffffff;
    border: 1px solid #e0d8c2;
    border-radius: 6px;
    position: relative;
}

.steps li::before {
    content: counter(step);
    position: absolute;
    left: 14px;
    top: 14px;
    width: 30px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    background-color: #b85a00;
    color: #fff;
    border-radius: 50%;
    font-weight: bold;
    font-family: Georgia, serif;
}

.ideas {
    display: block;
    margin-top: 25px;
}

.ideas li {
    background-color: #ffffff;
    border: 1px solid #e0d8c2;
    border-left: 4px solid #1f4d3a;
    border-radius: 6px;
    padding: 22px 24px;
    margin-bottom: 16px;
}

.ideas h3 {
    color: #1f4d3a;
    margin-bottom: 6px;
}

.ideas p {
    margin-bottom: 0;
    font-size: 15px;
    color: #555;
}

.calendar {
    width: 100%;
    border-collapse: collapse;
    background-color: #fff;
    border: 1px solid #e0d8c2;
    border-radius: 6px;
    overflow: hidden;
    margin-top: 25px;
    font-size: 15px;
}

.calendar thead {
    background-color: #1f4d3a;
    color: #fff;
}

.calendar th {
    text-align: left;
    padding: 14px 16px;
    font-weight: bold;
    font-family: Arial, sans-serif;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.calendar td {
    padding: 14px 16px;
    border-top: 1px solid #e6dfcf;
    vertical-align: top;
}

.calendar tbody tr:nth-child(even) {
    background-color: #faf6ee;
}

.status {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.status-open {
    background-color: #d4ead6;
    color: #1f4d3a;
}

.status-full {
    background-color: #f3d4d4;
    color: #8b1f1f;
}

.cta {
    background-color: #15201b;
    color: #fdf3d8;
    padding: 50px 0;
    text-align: center;
}

.cta h2 {
    color: #ffffff;
}

.cta p {
    margin-bottom: 20px;
}

.footer {
    background-color: #0e1a14;
    color: #d3c9b1;
    padding: 40px 0 20px;
    font-size: 15px;
}

.footer h3 {
    color: #f7c878;
    font-size: 16px;
    margin-bottom: 15px;
}

.footer-grid {
    display: block;
}

.footer-grid > div {
    margin-bottom: 25px;
}

.footer a {
    color: #ecdfc1;
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

.footer-list li {
    margin-bottom: 6px;
}

.hygiene-badge {
    margin-top: 15px;
    background: #fff;
    padding: 5px;
    border-radius: 4px;
    height: auto;
}

.copy {
    border-top: 1px solid #1f2c24;
    padding-top: 15px;
    margin-top: 15px;
    font-size: 13px;
    color: #95896d;
    text-align: center;
}

a:focus,
button:focus,
.btn:focus {
    outline: 3px solid #ffb84d;
    outline-offset: 2px;
}

/*this part use ai.*/
@media screen and (min-width: 768px) {

    h1 { font-size: 48px; }
    h2 { font-size: 32px; }

    .menu-btn {
        display: none;
    }

    .nav {
        display: block;
        width: auto;
        margin-top: 0;
    }

    .nav ul {
        display: flex;
        gap: 5px;
    }

    .nav ul li a {
        border-bottom: none;
        padding: 8px 12px;
        border-radius: 4px;
    }

    .nav ul li a.current {
        background-color: #1f4d3a;
        color: #fff;
    }

    .page-header {
        padding: 90px 0;
    }

    .page-header h1 {
        font-size: 48px;
    }

    .tiers {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }

    .tier {
        margin-bottom: 0;
    }

    .vol-grid {
        display: grid;
        grid-template-columns: 1.2fr 1fr;
        gap: 50px;
        align-items: center;
    }

    .vol-image {
        margin-top: 0;
    }

    .ideas {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 18px;
    }

    .ideas li {
        margin-bottom: 0;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.5fr 1fr 1fr;
        gap: 30px;
    }

    .footer-grid > div {
        margin-bottom: 0;
    }
}

@media screen and (min-width: 1000px) {
    .tiers {
        grid-template-columns: repeat(4, 1fr);
    }
    .ideas {
        grid-template-columns: repeat(4, 1fr);
    }
}