/* =========================
Header 基本
========================= */
:root {
    --navy: #133364;
    --white: #fff;
    --header-h: 64px;
}

.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    height: auto;
    z-index: 1000;
    background: var(--navy);
    color: var(--white);
}

.site-header .header-inner {
    width: 100%;
    padding-inline: clamp(16px, 8.33vw, 120px);
    padding-block: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* ナビ（PC時） */
.site-nav ul {
    display: flex;
    gap: 20px;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-nav a {
    color: var(--white);
    text-decoration: none;
    padding: .25rem .4rem;
    border-radius: 999px;
    transition: transform .3s ease, background-color .3s ease;
    display: inline-block;
}

.site-nav a:hover {
    transform: translateY(-1px);
}

/* ハンバーガー（PCでは非表示） */
.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 0;
    background: transparent;
    color: var(--white);
    position: relative;
    border-radius: 8px;
}

.nav-toggle:focus-visible {
    outline: 2px solid var(--turquoise);
    outline-offset: 2px;
}

/* 三本線 */
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
    position: absolute;
    left: 50%;
    width: 24px;
    height: 2px;
    background: var(--white);
    content: "";
    transform: translateX(-50%);
    transition: transform .2s ease, opacity .2s ease, top .2s ease, bottom .2s ease;
}

.nav-toggle span {
    top: 50%;
}

.nav-toggle span::before {
    top: -8px;
}

.nav-toggle span::after {
    bottom: -8px;
}

.site-header.is-open .nav-toggle span {
    background: transparent;
}

.site-header.is-open .nav-toggle span::before {
    top: 0;
    transform: translateX(-50%) rotate(45deg);
}

.site-header.is-open .nav-toggle span::after {
    bottom: 0;
    transform: translateX(-50%) rotate(-45deg);
}

@media (max-width:1024px) {
    .nav-toggle {
        display: inline-block;
    }

    .site-nav {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        background: var(--navy);
        transform: translateY(-8px);
        opacity: 0;
        visibility: hidden;
        transition: opacity .2s ease, transform .2s ease, visibility .2s;
        pointer-events: none;
    }

    .site-header.is-open .site-nav {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }

    .site-nav ul {
        display: flex;
        flex-direction: column;
        gap: 4px;
        padding: 40px clamp(16px, 6vw, 24px);
    }

    .site-nav a {
        display: block;
        color: var(--white);
        padding: 12px 8px;
        border-radius: 8px;
    }

    .site-nav a:hover {
        background: rgba(255, 255, 255, .08);
    }

    .site-nav .nav-cta .btn {
        width: 100%;
        border-radius: 999px;
        text-align: center;
        padding: .8rem 1.5rem;
    }

    .nav-locked {
        overflow: hidden;
        overscroll-behavior: contain;/
    }
}

body {
    padding-top: var(--header-h);
}

/* Skip link */
.skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.skip-link:focus {
    position: fixed;
    left: 16px;
    top: 16px;
    width: auto;
    height: auto;
    background: var(--black);
    color: var(--white);
    padding: .5rem .75rem;
    border-radius: 8px;
    z-index: 1001;
}

h1 {
    margin-top: 50px;
    text-align: center;
}

h2 {
    margin: 1rem 0;
}

p {
    margin-bottom: 2rem;
}

.cta-actions {
    margin-bottom: 50px;
}