/* Box sizing */
*,
*::before,
*::after {
    box-sizing: border-box;
}

/* Global typography & base */
html,
body {
    width: 100%;
}
html {
    font-size: 16px;
    scroll-padding-top: calc(var(--global-nav-height-mobile) + 0.5rem);
}

@media (min-width: 960px) {
    html {
        scroll-padding-top: calc(var(--global-nav-height-desktop) - 0.5rem);
    }
}

body {
    margin: 0;
    color: var(--text-primary);
    font-family: var(--font-family);
    -webkit-font-smoothing: antialiased;
    font-size: var(--font-sm);
    font-weight: var(--fw-normal);
    line-height: var(--lh-170);
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
}

section {
    margin-inline: auto;
}

ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

/* Layout base */
.container {
    box-sizing: border-box;
    margin-inline: auto;
    width: min(100% - 2rem, 1200px);
}

/* Headings */
h1 {
    font-size: var(--font-xxl);
    font-weight: var(--fw-bold);
}
h2 {
    font-size: var(--font-lg);
    font-weight: var(--fw-semibold);
}
h3 {
    font-size: 1.125rem;
    font-weight: var(--fw-semibold);
}

ruby {
    ruby-position: over;
}
ruby rp {
    line-height: 1;
    letter-spacing: 0;
}
ruby > rt {
    font-size: var(--font-xxs);
    line-height: 1;
    letter-spacing: 0;
    text-align: start;
    margin-inline: 0;
    padding-inline: 0;
    padding-block-end: 2px;
}

/* --- Utility: Responsive Line Breaks --- */
/* PC画面のみで改行を表示(スマホでは非表示) */
.u-br-pc,
span.u-br-pc {
    display: block;
}

@media (max-width: 767px) {
    .u-br-pc {
        display: none;
    }
}

/* スマホ画面のみで改行を表示(PCでは非表示) */
.u-br-sp,
span.u-br-sp {
    display: none;
}

@media (max-width: 767px) {
    .u-br-sp {
        display: block;
    }
}

@media (min-width: 960px) {
    .container {
        width: min(100%, 1200px);
    }
}

/* --- Utility: Text Alignment --- */
.u-text-center {
    text-align: center;
}

/* --- Utility: Center Alignment --- */
.u-center {
    margin-inline: auto;
    text-align: center;
}
.u-center img {
    display: inline-block;
    vertical-align: middle;
}