:root {
    --bg: #f3f0ea;
    --surface: #fbfaf7;
    --surface-strong: #ffffff;
    --text: #111111;
    --muted: #5a5a5a;
    --line: rgba(17, 17, 17, 0.12);
    --line-strong: rgba(17, 17, 17, 0.22);
    --shadow: 0 24px 60px rgba(17, 17, 17, 0.08);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background:
        radial-gradient(circle at top left, rgba(255, 255, 255, 0.9), transparent 32%),
        linear-gradient(180deg, #f7f5f0 0%, var(--bg) 100%);
    color: var(--text);
    font-family: "DM Sans", "Helvetica Neue", sans-serif;
    line-height: 1.7;
}

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

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

.site-header {
    left: 0;
    padding: 22px 32px;
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 10;
}

.site-header.is-scrolled {
    backdrop-filter: blur(18px);
}

.site-nav {
    align-items: center;
    background: rgba(251, 250, 247, 0.86);
    border: 1px solid rgba(17, 17, 17, 0.06);
    border-radius: 999px;
    box-shadow: 0 8px 30px rgba(17, 17, 17, 0.05);
    display: flex;
    justify-content: space-between;
    margin: 0 auto;
    max-width: 1240px;
    padding: 14px 22px;
}

.logo {
    align-items: center;
    display: inline-flex;
    flex-shrink: 0;
    gap: 12px;
}

.logo-mark {
    height: 34px;
    object-fit: contain;
    width: auto;
}

.logo-type {
    height: 20px;
    object-fit: contain;
    width: auto;
}

.mobile-menu-button {
    background: transparent;
    border: 0;
    color: var(--text);
    cursor: pointer;
    display: none;
    font: inherit;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.nav-links {
    align-items: center;
    display: flex;
    gap: 28px;
    list-style: none;
}

.nav-links a {
    color: rgba(17, 17, 17, 0.78);
    font-size: 0.95rem;
    position: relative;
}

.nav-links a::after {
    background: var(--text);
    bottom: -5px;
    content: "";
    height: 1px;
    left: 0;
    opacity: 0;
    position: absolute;
    transform: scaleX(0.6);
    transform-origin: left;
    transition: opacity 0.2s ease, transform 0.2s ease;
    width: 100%;
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
    opacity: 1;
    transform: scaleX(1);
}

main {
    padding: 24px 32px 120px;
}

.hero,
.feature-menu,
.statement,
.service-sections,
.company,
.contact {
    margin: 0 auto;
    max-width: 1240px;
}

.hero {
    align-items: end;
    column-gap: 52px;
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(340px, 0.8fr);
    min-height: calc(100vh - 120px);
    padding: 72px 0 56px;
}

.eyebrow {
    color: rgba(17, 17, 17, 0.62);
    font-size: 0.83rem;
    letter-spacing: 0.18em;
    margin-bottom: 18px;
    text-transform: uppercase;
}

.hero h1,
.statement h2,
.company h2,
.contact h2,
.service-row h3 {
    font-family: "Noto Serif JP", Georgia, serif;
    font-weight: 500;
    letter-spacing: -0.03em;
}

.hero h1 {
    font-size: clamp(3rem, 7.4vw, 6.6rem);
    line-height: 0.95;
    max-width: 9ch;
}

.hero h1 span {
    display: block;
}

.hero-lead {
    color: var(--muted);
    font-size: 1.04rem;
    margin-top: 28px;
    max-width: 38rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 34px;
}

.button {
    align-items: center;
    border-radius: 999px;
    display: inline-flex;
    font-size: 0.94rem;
    gap: 8px;
    justify-content: center;
    min-height: 48px;
    padding: 0 22px;
    transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

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

.button-primary {
    background: var(--text);
    color: #f7f5f0;
}

.button-secondary {
    background: transparent;
    border: 1px solid var(--line-strong);
    color: var(--text);
}

.hero-panel {
    display: grid;
    gap: 18px;
}

.panel-grid {
    display: grid;
    gap: 18px;
    grid-template-columns: 1fr 1fr;
}

.panel-card {
    background:
        linear-gradient(140deg, rgba(17, 17, 17, 0.02), rgba(17, 17, 17, 0.08)),
        linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(244, 240, 232, 0.92));
    border: 1px solid rgba(17, 17, 17, 0.08);
    border-radius: 28px;
    box-shadow: var(--shadow);
    min-height: 220px;
    overflow: hidden;
    padding: 28px;
    position: relative;
}

.panel-card::before {
    background:
        radial-gradient(circle at 25% 20%, rgba(255, 255, 255, 0.92), transparent 24%),
        linear-gradient(125deg, rgba(17, 17, 17, 0.85), rgba(17, 17, 17, 0.05));
    content: "";
    inset: 0;
    opacity: 0.14;
    position: absolute;
}

.panel-card-large {
    min-height: 360px;
}

.panel-label,
.feature-index {
    color: rgba(17, 17, 17, 0.58);
    font-size: 0.78rem;
    letter-spacing: 0.16em;
    position: relative;
    text-transform: uppercase;
    z-index: 1;
}

.panel-title {
    font-family: "Noto Serif JP", Georgia, serif;
    font-size: clamp(1.35rem, 2vw, 2rem);
    line-height: 1.2;
    margin-top: 14px;
    max-width: 10ch;
    position: relative;
    z-index: 1;
}

.feature-menu {
    display: grid;
    gap: 18px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 28px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.56);
    border: 1px solid var(--line);
    border-radius: 26px;
    min-height: 220px;
    padding: 28px;
    transition: transform 0.22s ease, border-color 0.22s ease, background-color 0.22s ease;
}

.feature-card:hover,
.feature-card:focus-visible {
    background: rgba(255, 255, 255, 0.88);
    border-color: var(--line-strong);
    transform: translateY(-4px);
}

.feature-card strong {
    display: block;
    font-family: "Noto Serif JP", Georgia, serif;
    font-size: 1.4rem;
    font-weight: 500;
    line-height: 1.3;
    margin: 22px 0 14px;
}

.feature-card p {
    color: var(--muted);
}

.feature-card-dark {
    background: #111111;
    color: #f7f5f0;
}

.feature-card-dark .feature-index,
.feature-card-dark p {
    color: rgba(247, 245, 240, 0.72);
}

.statement {
    border-top: 1px solid var(--line);
    column-gap: 42px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.9fr);
    margin-top: 88px;
    padding: 88px 0;
}

.statement h2,
.company h2,
.contact h2 {
    font-size: clamp(2rem, 4.2vw, 3.9rem);
    line-height: 1.08;
}

.statement-body {
    color: var(--muted);
    display: grid;
    gap: 20px;
}

.service-sections {
    border-top: 1px solid var(--line);
}

.service-row {
    border-bottom: 1px solid var(--line);
    column-gap: 40px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.9fr);
    padding: 36px 0;
}

.service-row h3 {
    font-size: clamp(1.5rem, 2.6vw, 2.35rem);
    line-height: 1.22;
    max-width: 16ch;
}

.service-row p:last-child {
    color: var(--muted);
    max-width: 38rem;
}

.company {
    margin-top: 88px;
}

.company-grid {
    display: grid;
    gap: 18px;
    grid-template-columns: 1.2fr 0.8fr;
    margin-top: 30px;
}

.company-card {
    background: rgba(255, 255, 255, 0.64);
    border: 1px solid var(--line);
    border-radius: 26px;
    padding: 34px;
}

.company-card dl {
    display: grid;
    gap: 26px;
}

.company-card dt {
    color: rgba(17, 17, 17, 0.56);
    font-size: 0.85rem;
    letter-spacing: 0.14em;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.company-card dd {
    font-size: 1.08rem;
}

.company-card-note ul {
    display: grid;
    gap: 14px;
    list-style: none;
}

.company-card-note li {
    border-top: 1px solid var(--line);
    padding-top: 14px;
}

.contact {
    align-items: start;
    column-gap: 32px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.75fr);
    margin-top: 88px;
}

.contact-copy p:last-child {
    color: var(--muted);
    margin-top: 18px;
    max-width: 34rem;
}

.contact-card {
    background: var(--surface-strong);
    border: 1px solid var(--line);
    border-radius: 26px;
    box-shadow: var(--shadow);
    display: grid;
    gap: 18px;
    padding: 32px;
}

.contact-item {
    border-bottom: 1px solid var(--line);
    padding-bottom: 18px;
}

.contact-item:last-of-type {
    border-bottom: 0;
    padding-bottom: 6px;
}

.contact-item span {
    color: rgba(17, 17, 17, 0.56);
    display: block;
    font-size: 0.82rem;
    letter-spacing: 0.14em;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.contact-note {
    color: var(--muted);
    font-size: 0.95rem;
}

.site-footer {
    color: rgba(17, 17, 17, 0.6);
    padding: 30px 32px 60px;
    text-align: center;
}

.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 1080px) {
    .hero,
    .statement,
    .service-row,
    .contact,
    .company-grid {
        grid-template-columns: 1fr;
    }

    .feature-menu {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .hero {
        min-height: auto;
    }

    .hero-copy {
        max-width: 52rem;
    }
}

@media (max-width: 760px) {
    .site-header,
    main,
    .site-footer {
        padding-left: 18px;
        padding-right: 18px;
    }

    .site-nav {
        align-items: flex-start;
        border-radius: 28px;
        flex-wrap: wrap;
        gap: 16px;
        padding: 18px;
    }

    .mobile-menu-button {
        display: block;
        margin-left: auto;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        gap: 14px;
        padding-top: 8px;
        width: 100%;
    }

    .nav-links.is-open {
        display: flex;
    }

    .logo-type {
        height: 16px;
    }

    .hero {
        padding-top: 28px;
    }

    .hero h1 {
        max-width: none;
    }

    .panel-grid,
    .feature-menu {
        grid-template-columns: 1fr;
    }

    .panel-card,
    .panel-card-large,
    .feature-card,
    .company-card,
    .contact-card {
        border-radius: 22px;
    }

    .statement,
    .company,
    .contact {
        margin-top: 64px;
    }
}