@charset "utf-8";

html {
    font-size: clamp(14px, 1.6vw, 16px);
}

body {
    background: #f9f9f9;
    color: #333;
    font-family:
        "Yu Gothic",
        "Hiragino Kaku Gothic ProN",
        "Helvetica Neue",
        "Segoe UI",
        "Meiryo",
        sans-serif;
    line-height: 1.7;
    margin: 0;
    padding: 0;
}

img {
    border: 0;
    box-sizing: border-box; 
    margin: 0;
    padding: 0;
    vertical-align: bottom;
    max-width: 100%;
    height: auto;
}

h1,h2,h3,h4,h5,h6 {
    margin: 0;
    padding: 0;
}

p {
    font-size: 1rem;
    line-height: 1.6;
    margin: 0.8rem 0 0;
    padding: 0;
}

p + p:last-of-type {
    margin-top: 0;
}

header {
    margin: 0 auto;
}

header .mtxt {
    margin: 0 auto;
    padding: 0 10px;
}

main {
    margin: 0 auto;
    padding: 0 10px;
}

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


.campaign-entry a {
    background-color: #29a543;
    border-radius: 8px;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.2);
    color: #fff;
    display: block;
    font-size: 1.5rem;
    font-weight: bold;
    line-height: 1.4;
    margin: 2.5rem auto 1rem;
    padding: 1rem;
    text-align: center;
    text-decoration: none;
    transition: background-color 0.3s ease;
    width: 80%;
}

.campaign-entry a:hover {
    background-color: #238d3a;
    color: #fff;
    text-decoration: underline;
}

.campaign-entry p {
    margin: 0.8rem auto 0;
    padding: 0;
    text-align: center;
}

.container {
    margin: 4rem auto 1.5rem;
}

h2 {
    border-left: 6px solid #354d97;
    border-bottom: 1px solid #354d97;
    color: #354d97;
    font-size: 1.4rem;
    line-height: 1.2;
    margin: 0 auto 1.5rem;
    padding: 0 0 0.5rem 1rem;
}

h3 {
    border-left: 3px solid #354d97;
    background: #efefef;
    font-size: 1.1rem;
    margin: 2rem auto 1rem;
    padding: 0.2rem 1rem;
}

h4 {
    font-size: 1.1rem;
    font-weight: bold;
    margin: 2rem auto 1rem;
    padding: 0.2rem 1rem;
    text-align: center;
}

.common-list--product {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1rem;
    list-style: none;
    margin: 0 auto 30px;
    padding: 0;
}

.common-list--product li {
    text-align: center;
}

.common-list--product li p {
    font-weight: bold;
    margin: 0.5rem 0 0;
}

.common-list--product li img {
    border: 1px solid #ccc;
    padding: 2px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

footer {
    background-color: #eee;
    margin: 60px auto 0;
    padding: 20px;
    text-align: center;
    width: 100%;
}

footer p {
    font-size: 0.8rem;
}

.footer-list {
    display: flex;
    justify-content: center;
    font-size: 0.8rem;
    gap: 20px;
    list-style: none;
    margin: 30px auto;
    padding: 0;
}


@media (min-width: 768px) {
    header,main {
        padding: 0 30px;
        max-width: 1260px;
    }

    h2 {
        border-left: 6px solid #354d97;
        border-bottom: 1px solid #354d97;
        color: #354d97;
        font-size: 1.8rem;
        line-height: 1.4;
        margin: 0 auto 1.5rem;
        padding: 0 0 0.5rem 1rem;
    }

    .campaign-entry a {
        width: 30%;
    }

    .common-list--product {
        flex-direction: row;
        gap: 2rem;
    }

    .common-list--product li img {
        width: 400px;
        height: 400px;
    }
}

.s-red { color: #f00; }