/* 无记 · v2.0.1
   复刻 sugimotohiroshi.com 视觉骨架（杉本博司式编辑型留白），
   借鉴 Apple-style 极简操作底座（变量化、容器化、克制的灰阶）。
   - 顶部: H1 logo 左 + nav 右，max-width 1160px 居中容器
   - 主区: poster image block, 3:2 比例，米白底 + 朱砂高亮
   - 字体: Cormorant Garamond + Noto Serif SC
*/

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

:root {
    /* 极简色彩矩阵 */
    --bg-base: #faf7f0;            /* 米白纸感 */
    --text-primary: #000000;       /* 墨黑 */
    --text-muted: #6b6b6b;         /* 辅助中灰 */
    --line-subtle: rgba(0,0,0,0.06);
    --accent: #8b1a1a;             /* 朱砂（仅作 hover/高亮） */

    /* 字体双轨制 */
    --font-serif: "Cormorant Garamond", "Noto Serif SC", Georgia, serif;

    /* 容器 */
    --container: 1160px;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    background: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: 14px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* === Header === */
.site-header {
    max-width: var(--container);
    margin: 0 auto;
    padding: 32px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo a {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 500;
    letter-spacing: 0.3em;
    color: var(--text-primary);
    transition: color 0.2s ease;
}
.logo a:hover { color: var(--accent); }

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

.primary-nav a {
    font-family: var(--font-serif);
    font-size: 0.9rem;            /* ~14.4px，更贴近 Apple nav 节奏 */
    font-weight: 400;
    color: var(--text-primary);
    letter-spacing: 0.05em;
    transition: color 0.25s cubic-bezier(0.25, 1, 0.5, 1);
}
.primary-nav a:hover { color: var(--accent); }
.primary-nav .active a {
    color: var(--text-primary);
    font-weight: 500;
    text-decoration: underline;
    text-underline-offset: 4px;
}

/* === Page content: image poster block === */
.page-content {
    padding: 20px 40px 40px;
    display: block;
    text-align: center;
}

.image-block {
    display: block;
    width: auto;
    height: min(64vh, 560px);
    aspect-ratio: 3 / 2;
    max-width: calc(100vw - 80px);
    margin: 30px auto 28px;
}

.caption {
    display: block;
    width: 100%;
    margin-top: 25px;
    text-align: right;
    color: var(--text-primary);
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 13px;
    letter-spacing: 0.08em;
    white-space: nowrap;
}

.image-frame {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    -webkit-mask-image: -webkit-radial-gradient(white, black);
    mask-image: radial-gradient(white, black);
}

.image-frame img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 50% 50%;
}


/* === 响应式 === */
@media (max-width: 900px) {
    .site-header { padding: 24px 20px; }
    .primary-nav ul { gap: 18px; }
    .primary-nav a { font-size: 0.8rem; }
    .page-content { padding: 40px 20px 60px; }
    .caption { font-size: 12px; margin-top: 20px; }
}

@media (max-width: 600px) {
    .site-header {
        flex-direction: column;
        gap: 16px;
        padding: 20px 16px;
    }
    .logo a { font-size: 18px; }
    .primary-nav ul { gap: 14px; flex-wrap: wrap; justify-content: center; }
    .primary-nav a { font-size: 0.75rem; }
    .page-content { padding: 24px 16px 40px; }
    .caption { font-size: 11px; margin-top: 16px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        transition-duration: 0.01ms !important;
    }
}