:root {
    --brand-blue: #17366e;
    --brand-blue-deep: #10284f;
    --brand-blue-soft: #eaf1ff;
    --action-blue: #2563eb;
    --action-blue-hover: #1d4ed8;
    --text-primary: #172033;
    --text-secondary: #566176;
    --surface: #ffffff;
    --surface-soft: #f4f7fb;
    --border: #dfe5ef;
    --footer-bg: #0d1728;
    --footer-text: #c8d2e3;
    --shadow-sm: 0 8px 24px rgba(16, 40, 79, 0.08);
    --shadow-md: 0 20px 48px rgba(16, 40, 79, 0.12);
    --radius-md: 18px;
    --radius-lg: 28px;
    --content-width: 1120px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    margin: 0;
    color: var(--text-primary);
    background: var(--surface);
    font-family: "Montserrat", "Noto Sans JP", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
}

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

a:focus-visible,
.button:focus-visible {
    outline: 3px solid #93c5fd;
    outline-offset: 4px;
}

.skip-link {
    position: fixed;
    top: 0.75rem;
    left: 0.75rem;
    z-index: 1000;
    padding: 0.65rem 1rem;
    border-radius: 0.5rem;
    color: var(--brand-blue-deep);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    transform: translateY(-160%);
    transition: transform 0.2s ease;
}

.skip-link:focus {
    transform: translateY(0);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    color: var(--surface);
    background: rgba(23, 54, 110, 0.97);
    box-shadow: 0 8px 24px rgba(13, 23, 40, 0.16);
    backdrop-filter: blur(14px);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: min(calc(100% - 3rem), var(--content-width));
    min-height: 76px;
    margin: 0 auto;
    gap: 2rem;
}

.brand {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 0.8rem;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.brand__mark {
    display: block;
    width: auto;
    height: 46px;
    object-fit: contain;
    transition: transform 0.2s ease;
}

.brand:hover .brand__mark {
    transform: scale(1.04);
}

.site-nav ul {
    display: flex;
    align-items: center;
    margin: 0;
    padding: 0;
    gap: clamp(1rem, 2.4vw, 2rem);
    list-style: none;
}

.site-nav a {
    position: relative;
    display: inline-block;
    padding: 0.55rem 0;
    color: #dbe7ff;
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.03em;
}

.site-nav a::after {
    position: absolute;
    right: 0;
    bottom: 0.25rem;
    left: 0;
    height: 2px;
    border-radius: 999px;
    background: var(--surface);
    content: "";
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.2s ease;
}

.site-nav a:hover {
    color: var(--surface);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a[aria-current="page"]::after {
    transform: scaleX(1);
}

.site-nav a[aria-current="page"] {
    color: var(--surface);
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    border: 0;
    white-space: nowrap;
}

.hero {
    position: relative;
    padding: 0 0 5.5rem;
    overflow: hidden;
    background: var(--surface-soft);
}

.hero__image {
    display: block;
    width: 100%;
    height: clamp(260px, 42vw, 610px);
    object-fit: cover;
    object-position: center;
}

.hero__content {
    position: relative;
    width: min(calc(100% - 3rem), 820px);
    margin: -4rem auto 0;
    padding: clamp(2rem, 5vw, 4rem);
    text-align: center;
    background: rgba(255, 255, 255, 0.97);
    border: 1px solid rgba(223, 229, 239, 0.9);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.eyebrow,
.section-heading__label,
.app-card__platform {
    margin: 0;
    color: var(--action-blue);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.hero h1 {
    margin: 1rem 0 1.25rem;
    color: var(--brand-blue-deep);
    font-family: "Noto Sans JP", sans-serif;
    font-size: clamp(2rem, 5vw, 3.75rem);
    font-weight: 600;
    letter-spacing: 0.04em;
    line-height: 1.35;
}

.hero__lead {
    margin: 0;
    color: var(--text-secondary);
    font-family: "Noto Sans JP", sans-serif;
    font-size: clamp(0.95rem, 2vw, 1.08rem);
}

.no-break {
    white-space: nowrap;
}

.section-shell {
    width: 100%;
}

.section-shell--soft {
    background: var(--surface-soft);
}

.section {
    width: min(calc(100% - 3rem), var(--content-width));
    margin: 0 auto;
    padding: clamp(4.5rem, 8vw, 7.5rem) 0;
}

.section--narrow {
    width: min(calc(100% - 3rem), 820px);
}

.section-heading {
    max-width: 760px;
    margin: 0 auto clamp(2.5rem, 5vw, 4rem);
    text-align: center;
}

.section-heading h2,
.contact-card h2 {
    margin: 0.65rem 0 0;
    color: var(--brand-blue-deep);
    font-family: "Noto Sans JP", sans-serif;
    font-size: clamp(1.75rem, 4vw, 2.65rem);
    font-weight: 600;
    letter-spacing: 0.03em;
    line-height: 1.45;
}

.section-heading__description {
    max-width: 660px;
    margin: 1.25rem auto 0;
    color: var(--text-secondary);
}

.philosophy {
    display: grid;
    grid-template-columns: minmax(240px, 0.8fr) minmax(0, 1.2fr);
    align-items: start;
    gap: clamp(2rem, 6vw, 5rem);
}

.philosophy__quote {
    margin: 0;
    padding-left: 1.5rem;
    color: var(--brand-blue);
    border-left: 4px solid var(--action-blue);
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.45rem, 3vw, 2rem);
    font-style: italic;
    line-height: 1.6;
}

.philosophy__body {
    color: var(--text-secondary);
}

.philosophy__body p:first-child {
    margin-top: 0;
}

.philosophy__body p:last-child {
    margin-bottom: 0;
}

.location-tag {
    display: inline-flex;
    align-items: center;
    margin-top: 1.25rem;
    color: var(--brand-blue-deep);
    font-family: Georgia, "Times New Roman", serif;
    font-style: italic;
    letter-spacing: 0.08em;
}

.location-tag::before {
    width: 28px;
    height: 2px;
    margin-right: 0.75rem;
    background: var(--action-blue);
    content: "";
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(1.5rem, 4vw, 2.5rem);
}

.app-card {
    display: flex;
    min-width: 0;
    flex-direction: column;
    padding: clamp(1.5rem, 4vw, 2.5rem);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.app-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.app-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
}

.app-card__icon {
    display: block;
    width: 88px;
    height: 88px;
    flex: 0 0 auto;
    border-radius: 22%;
    object-fit: cover;
    box-shadow: 0 8px 20px rgba(16, 40, 79, 0.16);
}

.app-card__type {
    padding: 0.4rem 0.75rem;
    color: var(--brand-blue);
    background: var(--brand-blue-soft);
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    white-space: nowrap;
}

.app-card__body {
    margin-top: 2rem;
}

.app-card__body h3 {
    margin: 0.4rem 0 0.75rem;
    color: var(--brand-blue-deep);
    font-family: "Noto Sans JP", sans-serif;
    font-size: clamp(1.35rem, 3vw, 1.75rem);
    line-height: 1.5;
}

.app-card__body > p:last-child {
    margin: 0;
    color: var(--text-secondary);
}

.app-card__footer {
    margin-top: auto;
    padding-top: 2rem;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0.75rem 1.4rem;
    gap: 0.5rem;
    color: var(--surface);
    background: var(--action-blue);
    border-radius: 999px;
    font-size: 0.88rem;
    font-weight: 600;
    transition: background 0.2s ease, transform 0.2s ease;
}

a.button:hover {
    background: var(--action-blue-hover);
    transform: translateY(-2px);
}

.operator-card,
.text-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.operator-card {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    padding: clamp(1.75rem, 5vw, 3.5rem);
    gap: clamp(2rem, 6vw, 5rem);
}

.operator-card__intro {
    margin: 0;
    color: var(--brand-blue-deep);
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    font-weight: 500;
}

.operator-list {
    margin: 0;
}

.operator-list div {
    display: grid;
    grid-template-columns: 7rem minmax(0, 1fr);
    padding: 1rem 0;
    gap: 1rem;
    border-bottom: 1px solid var(--border);
}

.operator-list div:first-child {
    padding-top: 0;
}

.operator-list div:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.operator-list dt {
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 600;
}

.operator-list dd {
    margin: 0;
}

.contact-card {
    padding: clamp(2rem, 6vw, 4rem);
    text-align: center;
    color: var(--surface);
    background: linear-gradient(145deg, var(--brand-blue-deep), var(--brand-blue));
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-card .section-heading__label {
    color: #9fc1ff;
}

.contact-card h2 {
    color: var(--surface);
}

.contact-card > p:not(.section-heading__label) {
    margin: 1rem 0 0;
    color: #dbe7ff;
}

.contact-email {
    display: inline-block;
    margin-top: 1.5rem;
    color: var(--surface);
    font-size: clamp(1rem, 3vw, 1.25rem);
    font-weight: 600;
    text-decoration: underline;
    text-decoration-color: #7ba8ff;
    text-underline-offset: 0.35rem;
    overflow-wrap: anywhere;
}

.contact-email:hover {
    text-decoration-color: var(--surface);
}

.text-panel {
    padding: clamp(1.5rem, 5vw, 3rem);
}

.prose {
    color: var(--text-secondary);
}

.prose h3 {
    margin: 2rem 0 0.75rem;
    color: var(--brand-blue-deep);
    font-family: "Noto Sans JP", sans-serif;
    font-size: 1.15rem;
}

.prose ul {
    padding-left: 1.5rem;
}

.legal-summary {
    padding: clamp(1.75rem, 5vw, 3rem);
    text-align: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.legal-summary > p {
    max-width: 620px;
    margin: 0 auto;
    color: var(--text-secondary);
}

.legal-summary__links {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 2rem;
    gap: 0.75rem;
}

.legal-summary__links a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 0.75rem 1rem;
    color: var(--brand-blue);
    background: var(--brand-blue-soft);
    border-radius: 0.75rem;
    font-size: 0.9rem;
    font-weight: 600;
    transition: color 0.2s ease, background 0.2s ease;
}

.legal-summary__links a:hover {
    color: var(--surface);
    background: var(--brand-blue);
}

.legal-page {
    background: var(--surface-soft);
}

.legal-main {
    width: min(calc(100% - 3rem), 920px);
    margin: 0 auto;
    padding: clamp(3rem, 7vw, 6rem) 0;
}

.breadcrumb {
    margin: 0 0 1.5rem;
    color: var(--text-secondary);
    font-size: 0.82rem;
}

.breadcrumb a {
    color: var(--action-blue);
}

.breadcrumb a:hover {
    text-decoration: underline;
    text-underline-offset: 0.2rem;
}

.legal-document {
    padding: clamp(1.75rem, 6vw, 4.5rem);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.legal-document__header {
    padding-bottom: clamp(2rem, 5vw, 3.5rem);
    border-bottom: 1px solid var(--border);
}

.legal-document__header h1 {
    margin: 0.65rem 0 0;
    color: var(--brand-blue-deep);
    font-family: "Noto Sans JP", sans-serif;
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: 600;
    letter-spacing: 0.03em;
    line-height: 1.4;
}

.legal-document__lead {
    max-width: 720px;
    margin: 1.25rem 0 0;
    color: var(--text-secondary);
}

.legal-document__meta {
    margin: 1.5rem 0 0;
    color: var(--text-secondary);
    font-size: 0.82rem;
}

.legal-document__body {
    padding-top: clamp(2rem, 5vw, 3.5rem);
}

.legal-section + .legal-section {
    margin-top: clamp(2.5rem, 6vw, 4rem);
}

.legal-section h2 {
    margin: 0 0 1rem;
    padding-bottom: 0.7rem;
    color: var(--brand-blue-deep);
    border-bottom: 2px solid var(--brand-blue-soft);
    font-family: "Noto Sans JP", sans-serif;
    font-size: clamp(1.3rem, 3vw, 1.65rem);
    line-height: 1.5;
    text-wrap: balance;
}

.legal-section h3 {
    margin: 1.75rem 0 0.75rem;
    color: var(--brand-blue-deep);
    font-family: "Noto Sans JP", sans-serif;
    font-size: 1.08rem;
}

.legal-section p,
.legal-section li,
.legal-section dd {
    color: var(--text-secondary);
}

.legal-section p {
    margin: 0.75rem 0;
}

.legal-section ul,
.legal-section ol {
    padding-left: 1.4rem;
}

.legal-section li + li {
    margin-top: 0.55rem;
}

.legal-section a {
    color: var(--action-blue);
    text-decoration: underline;
    text-underline-offset: 0.2rem;
}

.legal-note {
    margin: 1.5rem 0 0;
    padding: 1rem 1.25rem;
    color: var(--text-secondary);
    background: var(--brand-blue-soft);
    border-left: 4px solid var(--action-blue);
    border-radius: 0.5rem;
}

.legal-definition-list {
    margin: 0;
}

.legal-definition-list div {
    display: grid;
    grid-template-columns: 10rem minmax(0, 1fr);
    padding: 1rem 0;
    gap: 1rem;
    border-bottom: 1px solid var(--border);
}

.legal-definition-list div:last-child {
    border-bottom: 0;
}

.legal-definition-list dt {
    color: var(--brand-blue-deep);
    font-weight: 600;
}

.legal-definition-list dd {
    margin: 0;
}

.legal-table-wrap {
    margin-top: 1.25rem;
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: 0.75rem;
}

.legal-table {
    width: 100%;
    min-width: 680px;
    border-collapse: collapse;
    font-size: 0.88rem;
}

.legal-table th,
.legal-table td {
    padding: 1rem;
    text-align: left;
    vertical-align: top;
    border-bottom: 1px solid var(--border);
}

.legal-table th {
    color: var(--brand-blue-deep);
    background: var(--brand-blue-soft);
    font-weight: 600;
}

.legal-table td {
    color: var(--text-secondary);
}

.legal-table tbody tr:last-child td {
    border-bottom: 0;
}

.status-label {
    display: inline-block;
    margin-bottom: 0.4rem;
    padding: 0.2rem 0.55rem;
    color: var(--brand-blue);
    background: var(--brand-blue-soft);
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.status-label--planned {
    color: #7c4a03;
    background: #fff1ce;
}

.legal-contact {
    padding: 1.25rem;
    background: var(--surface-soft);
    border-radius: 0.75rem;
}

.legal-contact a {
    font-weight: 600;
}

.site-footer {
    padding: 4rem 1.5rem 2rem;
    color: var(--footer-text);
    background: var(--footer-bg);
}

.site-footer__inner {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    width: min(100%, var(--content-width));
    margin: 0 auto;
    padding-bottom: 3rem;
    gap: 3rem;
    border-bottom: 1px solid rgba(200, 210, 227, 0.18);
}

.site-footer__brand {
    margin: 0;
    color: var(--surface);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.site-footer__message {
    margin: 0.4rem 0 0;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 0.9rem;
    font-style: italic;
}

.site-footer__links {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.75rem 1.5rem;
    font-size: 0.82rem;
}

.site-footer__links a:hover {
    color: var(--surface);
}

.site-footer__copyright {
    width: min(100%, var(--content-width));
    margin: 2rem auto 0;
    font-size: 0.78rem;
}

@media (max-width: 860px) {
    html {
        scroll-padding-top: 140px;
    }

    .site-header__inner {
        flex-wrap: wrap;
        padding: 0.75rem 0;
        gap: 0.25rem;
    }

    .brand__mark {
        height: 40px;
    }

    .site-nav {
        width: 100%;
        overflow-x: auto;
        scrollbar-width: thin;
    }

    .site-nav ul {
        width: max-content;
        min-width: 100%;
        justify-content: space-between;
        gap: 1.25rem;
    }

    .philosophy,
    .operator-card {
        grid-template-columns: 1fr;
    }

    .app-grid {
        grid-template-columns: 1fr;
    }

    .app-card {
        min-height: 0;
    }
}

@media (max-width: 560px) {
    .site-header__inner,
    .section,
    .section--narrow {
        width: min(calc(100% - 2rem), var(--content-width));
    }

    .brand__name {
        font-size: 0.9rem;
    }

    .site-nav a {
        padding: 0.45rem 0;
        font-size: 0.68rem;
        letter-spacing: 0;
        white-space: nowrap;
    }

    .site-nav {
        overflow-x: visible;
    }

    .site-nav ul {
        width: 100%;
        min-width: 0;
        gap: 0.5rem;
    }

    .hero {
        padding-bottom: 4rem;
    }

    .hero__content {
        width: min(calc(100% - 2rem), 820px);
        margin-top: -2rem;
        border-radius: var(--radius-md);
    }

    .desktop-only {
        display: none;
    }

    .app-card__icon {
        width: 76px;
        height: 76px;
    }

    .operator-list div {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }

    .legal-summary__links {
        grid-template-columns: 1fr;
    }

    .legal-main {
        width: min(calc(100% - 2rem), 920px);
    }

    .legal-document {
        border-radius: var(--radius-md);
    }

    .legal-definition-list div {
        grid-template-columns: 1fr;
        gap: 0.35rem;
    }

    .site-footer__inner {
        flex-direction: column;
    }

    .site-footer__links {
        justify-content: flex-start;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}