/* Shared foundation: desktop values first, responsive adjustments below. */

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

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

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

html {
    font-size: 62.5%;
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + var(--header-top));
}

img {
    max-width: 100%;
    height: auto;
    vertical-align: bottom;
}

a {
    color: inherit;
    text-decoration: none;
    transition: opacity var(--transition);
}

a:hover {
    opacity: 0.7;
}

ul {
    list-style: none;
}

ol {
    list-style: none;
}

address {
    font-style: normal;
}

.l-inner {
    max-width: calc(var(--inner-width) + var(--inner-padding) * 2);
    margin: 0 auto;
    padding-left: var(--inner-padding);
    padding-right: var(--inner-padding);
}

.l-main {
    padding-top: calc(var(--header-height) + var(--header-top) + 18px);
}

:root {
    --color-navy: #1E477E;
    --color-orange: #FF8600;
    --color-gold: #FFBD2E;
    --color-red: #EF003C;
    --color-red-highlight: #FA2A17;
    --color-text: #2F343B;
    --color-white: #FFFFFF;
    --color-bg-light: #F5F7FA;
    --color-border: #D9DDE3;
    --color-gray: #666666;
    --color-cyan-tint: #ECFAFF;
    --color-cyan-tint-border: #D9F0F7;
    --color-navy-tint: var(--color-cyan-tint);
    --color-orange-tint: #FFF5EA;
    --color-red-tint: #FFF5F7;
    --color-navy-overlay: rgba(30, 71, 126, 0.85);
    --font-ja: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
    --font-en: 'Bahnschrift', 'Montserrat', sans-serif;
    --fs-2xs: 1.1rem;
    --fs-xs: 1.2rem;
    --fs-sm: 1.4rem;
    --fs-base: 1.6rem;
    --fs-md: 1.8rem;
    --fs-lg: 2rem;
    --fs-xl: 2.4rem;
    --fs-2xl: 2.8rem;
    --fs-3xl: 3.2rem;
    --fs-4xl: 3.6rem;
    --fs-5xl: 4.8rem;
    --fs-6xl: 6rem;
    --fs-7xl: 8rem;
    --fs-8xl: 10rem;
    --fs-9xl: 12rem;
    --fw-regular: 500;
    --fw-bold: 700;
    --fw-heavy: 800;
    --fw-black: 900;
    --ls-sm: 1.12px;
    --ls-base: 1.28px;
    --ls-md: 1.44px;
    --ls-lg: 1.6px;
    --ls-xl: 2.56px;
    --space-section-sm: 60px;
    --space-section: 80px;
    --space-section-lg: 100px;
    --space-section-xl: 130px;
    --header-height: 100px;
    --header-top: 18px;
    --inner-width: 1440px;
    --inner-padding: 40px;
    --transition: 0.3s ease;
    --yamamoto-font-weight-body: 500;
    --yamamoto-font-weight-emphasis: 700;
}

body main :is(p, li, td, dd) {
    font-weight: var(--yamamoto-font-weight-body) !important;
}

.p-404 {
    padding: 130px 0;
    text-align: center;
}

.p-404__title {
    font-size: var(--fs-9xl);
    font-weight: var(--fw-black);
    color: var(--color-navy);
    line-height: 1;
}

.p-404__text {
    font-size: var(--fs-md);
    margin: 20px 0 40px;
}

.p-page {
    padding: 60px 0 100px;
}

.p-page__content {
    max-width: 900px;
    margin: 0 auto;
    font-size: var(--fs-base);
    line-height: 2;
}

.js-fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.js-fade-in.is-visible {
    opacity: 1;
    transform: translateY(0);
}

body.is-nav-open::before {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
}

body {
    font-family: var(--font-ja);
    font-size: var(--fs-base);
    font-weight: var(--fw-regular);
    line-height: 2;
    color: var(--color-text);
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
    letter-spacing: 0.04em;
}

@media (max-width: 1400px) {
    :root {
        --inner-width: 1100px;
        --inner-padding: 30px;
    }
}

@media (max-width: 1279px) {
    :root {
        --header-height: 70px;
        --header-top: 0px;
        --inner-padding: 24px;
    }

    .l-main {
        padding-top: var(--header-height);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 60px;
        --header-top: 0px;
        --inner-padding: 20px;
    }

    .l-main {
        padding-top: var(--header-height);
    }

}