:root {
    --bg: #070b10;
    --bg-2: #0d131b;
    --panel: rgba(15, 21, 30, 0.92);
    --line: rgba(132, 156, 188, 0.2);
    --line-strong: rgba(170, 198, 236, 0.36);
    --text: #edf3fb;
    --muted: #98a6b8;
    --accent: #8fb3e8;
    --accent-soft: rgba(143, 179, 232, 0.16);
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.34);
    --radius: 22px;
    --max: 1280px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Inter, "Noto Sans JP", system-ui, -apple-system, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(120, 145, 190, 0.08), transparent 36%),
        radial-gradient(circle at top right, rgba(255, 255, 255, 0.03), transparent 26%),
        linear-gradient(180deg, #06090d 0%, #0b1118 48%, #0e141c 100%);
    line-height: 1.65;
}

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

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

button,
input,
select {
    font: inherit;
}

.container {
    width: min(calc(100% - 32px), var(--max));
    margin-inline: auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    border-bottom: 1px solid var(--line);
    background: rgba(7, 9, 13, 0.76);
    backdrop-filter: blur(16px);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
    gap: 20px;
}

.brand {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.brand__sub {
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    color: rgba(237, 243, 251, 0.72);
    text-transform: uppercase;
}

.brand__title {
    font-size: 1.08rem;
    font-weight: 700;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 18px;
}

.site-nav a {
    color: rgba(237, 243, 251, 0.92);
}

.hero {
    padding: 34px 0 12px;
}

.hero__inner {
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: calc(var(--radius) + 4px);
    background: linear-gradient(180deg, rgba(16, 21, 29, 0.94), rgba(10, 15, 22, 0.94));
    box-shadow: var(--shadow);
}

.hero__eyebrow {
    font-size: 0.76rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent);
    margin-bottom: 10px;
    font-weight: 600;
}

.hero h1 {
    margin: 0 0 8px;
    font-size: clamp(2rem, 3vw, 3rem);
    line-height: 1.06;
}

.hero__lead {
    margin: 0;
    color: var(--muted);
}

.hero__meta {
    margin-top: 18px;
}

.hero__meta-box {
    display: inline-grid;
    gap: 4px;
    min-width: 180px;
    padding: 14px 16px;
    border-radius: 18px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.035);
}

.hero__meta-label {
    font-size: 0.76rem;
    text-transform: uppercase;
    color: var(--muted);
    letter-spacing: 0.08em;
}

.hero__meta-value {
    font-weight: 700;
}

.section-gallery {
    padding: 16px 0 46px;
}

.toolbar {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 18px;
    flex-wrap: wrap;
    margin-bottom: 22px;
}

.toolbar h2 {
    margin: 0 0 12px;
    font-size: 1.1rem;
}

.toolbar__right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tab {
    min-height: 40px;
    padding: 0 14px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: rgba(18, 24, 32, 0.9);
    color: var(--muted);
    cursor: pointer;
    transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.tab:hover,
.tab.is-active {
    color: var(--text);
    background: var(--accent-soft);
    border-color: var(--line-strong);
    transform: translateY(-1px);
}

.search,
.sort {
    min-height: 42px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: rgba(18, 24, 32, 0.94);
    color: var(--text);
    padding: 0 16px;
    outline: none;
}

.search {
    min-width: min(320px, 74vw);
}

.gallery {
    column-count: 5;
    column-gap: 18px;
}

.card {
    break-inside: avoid;
    -webkit-column-break-inside: avoid;
    margin: 0 0 18px;
    border: 1px solid var(--line);
    border-radius: 22px;
    overflow: hidden;
    background: linear-gradient(180deg, rgba(20, 27, 36, 0.98), rgba(13, 18, 26, 0.98));
    box-shadow:
        0 14px 30px rgba(0, 0, 0, 0.24),
        0 0 0 1px rgba(170, 198, 236, 0.04) inset;
    transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease, background 0.22s ease;
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--line-strong);
    box-shadow:
        0 22px 40px rgba(0, 0, 0, 0.34),
        0 0 0 1px rgba(190, 214, 244, 0.08) inset;
}

.card__link {
    display: block;
}

.card__thumb {
    background: linear-gradient(180deg, #0d141c 0%, #0a1017 100%);
}

.card__thumb img {
    display: block;
    width: 100%;
    height: auto;
}

.card__body {
    padding: 12px 14px 14px;
    background: linear-gradient(180deg, rgba(16, 22, 30, 0.96), rgba(13, 18, 25, 0.98));
    border-top: 1px solid rgba(160, 186, 220, 0.12);
}

.card__title {
    margin: 0;
    font-size: 0.94rem;
    line-height: 1.45;
    color: rgba(237, 243, 251, 0.96);
    font-weight: 500;
    word-break: break-word;
}

.gallery-empty {
    margin: 20px 0 0;
    color: var(--muted);
}

.site-footer {
    padding: 26px 0 54px;
    color: var(--muted);
    font-size: 0.88rem;
}

.site-footer__inner {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    border-top: 1px solid rgba(228, 232, 238, 0.12);
    padding-top: 18px;
}

@media (max-width: 1180px) {
    .gallery {
        column-count: 4;
    }
}

@media (max-width: 900px) {
    .gallery {
        column-count: 3;
    }
}

@media (max-width: 640px) {
    .hero {
        padding-top: 24px;
    }

    .hero__inner {
        padding: 18px;
    }

    .toolbar {
        align-items: stretch;
    }

    .search {
        min-width: 100%;
    }

    .gallery {
        column-count: 2;
        column-gap: 14px;
    }

    .card {
        margin-bottom: 14px;
    }

    .card__body {
        padding: 10px 12px 12px;
    }

    .card__title {
        font-size: 0.9rem;
    }
}

@media (max-width: 520px) {
    .gallery {
        column-count: 1;
    }
}