:root {
    --bg: #040507;
    --bg-soft: #0b1320;
    --bg-footer: #09111d;
    --panel: #152136;
    --panel-warm: #3a1f0a;
    --panel-warm-soft: rgba(58, 31, 10, 0.82);
    --gold: #f3b41a;
    --gold-soft: rgba(243, 180, 26, 0.18);
    --line: rgba(243, 180, 26, 0.16);
    --text: #f4f0e8;
    --text-soft: rgba(244, 240, 232, 0.74);
    --text-faint: rgba(244, 240, 232, 0.45);
    --container: 1248px;
    --content-width: min(calc(100% - 32px), var(--container));
    --shadow-soft: 0 20px 44px rgba(0, 0, 0, 0.36);
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    font-family: "Noto Sans JP", sans-serif;
    line-height: 1.7;
    letter-spacing: 0.02em;
}

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

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

button,
input,
textarea,
select {
    font: inherit;
}

.public-site {
    background: #040507;
}

.page-main {
    padding-bottom: 3.5rem;
}

.section-frame,
.page-intro,
.site-header__inner,
.site-footer__inner {
    width: var(--content-width);
    margin-inline: auto;
}

.page-intro {
    padding-top: 5rem;
    padding-bottom: 3rem;
    text-align: center;
}

.page-intro--narrow {
    max-width: 50rem;
}

.page-intro__eyebrow {
    margin: 0 0 0.75rem;
    color: var(--gold);
    font-size: 1.125rem;
    letter-spacing: 0;
}

.page-intro__title,
.page-section-heading h2 {
    margin: 0;
    color: var(--gold);
    font-size: clamp(2.5rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.18;
}

.page-intro__subtitle,
.page-section-heading p {
    margin: 0.45rem 0 0;
    color: var(--text-faint);
    font-size: 1.125rem;
}

.page-intro__description {
    max-width: 42rem;
    margin: 1.25rem auto 0;
    color: var(--text-soft);
}

.page-intro__action {
    margin: 1.5rem 0 0;
}

.page-section-heading {
    margin-bottom: 1.6rem;
    text-align: center;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.9rem;
    padding: 0.7rem 1.35rem;
    border: 1px solid transparent;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 700;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.button:hover {
    transform: translateY(-1px);
}

.button-primary {
    background: var(--gold);
    color: #140d04;
}

.button-ghost {
    border-color: rgba(255, 255, 255, 0.18);
    background: rgba(12, 17, 25, 0.92);
    color: var(--text);
}

.empty-state {
    padding: 2rem;
    border: 1px solid var(--line);
    background: rgba(11, 19, 32, 0.84);
    color: var(--text-soft);
    text-align: center;
}

.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;
}

@media (min-width: 768px) {
    .section-frame,
    .page-intro,
    .site-header__inner,
    .site-footer__inner {
        width: min(calc(100% - 154px), var(--container));
    }

    .page-main {
        padding-bottom: 4.5rem;
    }

    .page-intro {
        padding-top: 5rem;
        padding-bottom: 4rem;
    }
}