:root {
    --paper: #f6f4ef;
    --ink: #171717;
    --muted: #6f6b63;
    --line: rgba(23, 23, 23, 0.14);
    --accent: #1f5f5b;
    --soft: #d9d2c4;
    --shadow: 0 18px 50px rgba(20, 20, 20, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.7;
}

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

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
    padding: 0 clamp(18px, 4vw, 56px);
    background: rgba(246, 244, 239, 0.88);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(18px);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
    font-weight: 700;
}

.brand img {
    max-height: 46px;
    width: auto;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    background: var(--ink);
    color: var(--paper);
    font-size: 22px;
}

.brand-text {
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.site-nav ul {
    display: flex;
    align-items: center;
    gap: 22px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-nav a {
    color: var(--muted);
    font-size: 14px;
}

.site-nav a:hover,
.site-nav .current-menu-item > a {
    color: var(--ink);
}

.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid var(--line);
    background: transparent;
    padding: 0;
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    margin: 5px auto;
    background: var(--ink);
}

.site-main {
    min-height: 70vh;
}

.home-hero {
    padding: clamp(16px, 3vw, 32px) clamp(18px, 4vw, 56px) 0;
}

.hero-link {
    position: relative;
    display: block;
    min-height: clamp(420px, 72vh, 760px);
    overflow: hidden;
    background: var(--soft);
}

.hero-image,
.work-hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-link .hero-image {
    position: absolute;
    inset: 0;
}

.hero-shade {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.08), rgba(0, 0, 0, 0.62));
}

.hero-copy {
    position: absolute;
    left: clamp(22px, 5vw, 72px);
    right: clamp(22px, 5vw, 72px);
    bottom: clamp(26px, 7vw, 86px);
    color: #fff;
}

.kicker {
    display: block;
    color: var(--accent);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: uppercase;
}

.hero-copy .kicker {
    color: rgba(255, 255, 255, 0.74);
}

.hero-title {
    display: block;
    max-width: 920px;
    margin: 8px 0 12px;
    font-size: clamp(42px, 8vw, 108px);
    font-weight: 780;
    line-height: 1;
}

.hero-meta {
    color: rgba(255, 255, 255, 0.78);
}

.empty-hero {
    min-height: 420px;
    display: grid;
    align-content: center;
    padding: clamp(24px, 7vw, 84px);
    background: linear-gradient(135deg, #ece6d8, #bfcfc8);
}

.empty-hero h1 {
    margin: 10px 0;
    font-size: clamp(40px, 7vw, 92px);
    line-height: 1;
}

.empty-hero p,
.archive-intro p {
    max-width: 620px;
    color: var(--muted);
}

.section-head,
.archive-intro {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 20px;
    padding: clamp(42px, 8vw, 92px) clamp(18px, 4vw, 56px) 24px;
}

.archive-intro {
    display: block;
    max-width: 980px;
}

.section-head h2,
.archive-intro h1,
.page-content h1 {
    margin: 0;
    font-size: clamp(34px, 6vw, 72px);
    line-height: 1;
}

.section-head a {
    color: var(--accent);
    font-weight: 700;
}

.work-grid {
    columns: 3 280px;
    column-gap: clamp(14px, 2vw, 28px);
    padding: 0 clamp(18px, 4vw, 56px) clamp(56px, 8vw, 96px);
}

.work-card {
    break-inside: avoid;
    margin: 0 0 clamp(14px, 2vw, 28px);
}

.work-card a {
    display: block;
    background: rgba(255, 255, 255, 0.34);
    border: 1px solid var(--line);
    transition: transform 180ms ease, box-shadow 180ms ease;
}

.work-card a:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.work-card-media {
    display: block;
    aspect-ratio: 4 / 5;
    overflow: hidden;
    background: var(--soft);
}

.work-card:nth-child(3n + 2) .work-card-media {
    aspect-ratio: 1 / 1;
}

.work-card:nth-child(4n) .work-card-media {
    aspect-ratio: 5 / 4;
}

.work-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.work-card-copy {
    display: block;
    padding: 14px 16px 16px;
}

.work-card-title {
    display: block;
    font-weight: 720;
    line-height: 1.35;
}

.work-card-meta {
    display: block;
    margin-top: 4px;
    color: var(--muted);
    font-size: 13px;
}

.image-fallback,
.hero-placeholder {
    display: block;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #d8d0bd, #8fb1a8);
}

.single-work {
    padding-bottom: clamp(56px, 8vw, 100px);
}

.work-hero {
    position: relative;
    min-height: clamp(360px, 66vh, 760px);
    background: var(--soft);
}

.work-hero-image {
    position: absolute;
    inset: 0;
}

.work-title-block {
    position: absolute;
    left: clamp(18px, 4vw, 56px);
    right: clamp(18px, 4vw, 56px);
    bottom: clamp(24px, 5vw, 64px);
    max-width: 900px;
    color: #fff;
    text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
}

.work-title-block h1 {
    margin: 8px 0 0;
    font-size: clamp(40px, 7vw, 96px);
    line-height: 1;
}

.work-title-block .kicker {
    color: rgba(255, 255, 255, 0.8);
}

.work-body {
    display: grid;
    grid-template-columns: minmax(180px, 300px) minmax(0, 760px);
    gap: clamp(28px, 6vw, 86px);
    padding: clamp(34px, 6vw, 82px) clamp(18px, 4vw, 56px);
}

.work-facts {
    display: grid;
    align-content: start;
    gap: 16px;
}

.work-facts div {
    border-top: 1px solid var(--line);
    padding-top: 12px;
}

.work-facts span {
    display: block;
    color: var(--muted);
    font-size: 13px;
}

.work-facts strong {
    display: block;
    margin-top: 2px;
    font-size: 15px;
}

.work-content {
    color: #2b2925;
    font-size: clamp(17px, 1.4vw, 20px);
}

.work-content > *:first-child {
    margin-top: 0;
}

.photo-wall {
    columns: 2 320px;
    column-gap: clamp(12px, 2vw, 22px);
    padding: 0 clamp(18px, 4vw, 56px);
}

.photo-wall-item {
    display: block;
    break-inside: avoid;
    margin-bottom: clamp(12px, 2vw, 22px);
    cursor: zoom-in;
}

.photo-wall img {
    width: 100%;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

.qihai-lightbox {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: none;
    place-items: center;
    padding: 24px;
    background: rgba(0, 0, 0, 0.88);
}

.qihai-lightbox.is-open {
    display: grid;
}

.qihai-lightbox img {
    max-height: 92vh;
    width: auto;
}

.site-footer {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding: 28px clamp(18px, 4vw, 56px);
    color: var(--muted);
    border-top: 1px solid var(--line);
}

.page-content,
.post-list,
.empty-state {
    max-width: 860px;
    padding: clamp(42px, 8vw, 92px) clamp(18px, 4vw, 56px);
}

.post-row a {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 22px;
    padding: 18px 0;
    border-bottom: 1px solid var(--line);
}

.pagination {
    padding: 0 clamp(18px, 4vw, 56px) 70px;
}

.pagination .nav-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.pagination a,
.pagination span {
    display: grid;
    place-items: center;
    min-width: 38px;
    height: 38px;
    padding: 0 12px;
    border: 1px solid var(--line);
}

@media (max-width: 760px) {
    .site-header {
        min-height: 64px;
    }

    .nav-toggle {
        display: block;
    }

    .site-nav {
        position: absolute;
        left: 0;
        right: 0;
        top: 64px;
        display: none;
        padding: 12px 18px 18px;
        background: rgba(246, 244, 239, 0.98);
        border-bottom: 1px solid var(--line);
    }

    .site-nav.is-open {
        display: block;
    }

    .site-nav ul {
        display: grid;
        gap: 12px;
    }

    .hero-link {
        min-height: 520px;
    }

    .section-head,
    .work-body,
    .site-footer,
    .post-row a {
        display: block;
    }

    .section-head a {
        display: inline-block;
        margin-top: 10px;
    }

    .work-grid,
    .photo-wall {
        columns: 1;
    }

    .work-facts {
        margin-bottom: 30px;
    }
}