/* ==========================================================================
   Vino Studio — Mercury 主题的编辑部式视觉层
   参考：euclideandreams.com（衬线大标题 / No. 编号写作索引 / 等宽元数据）
        murilochayel.com（编号项目卡 / 大写标签 / 联系区块）
   所有 Vino 组件使用 `v-` 前缀 + `--v-*` token，dark 为默认主题。
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 设计 Token — dark 默认，light 完整重定义
   -------------------------------------------------------------------------- */

:root {
    color-scheme: dark;

    --v-bg:            #101113;
    --v-surface:       #17191d;
    --v-surface-2:     #1d2025;
    --v-border:        #26282e;
    --v-border-strong: #35383f;
    --v-text:          #e9e7e2;
    --v-muted:         #9b9a94;
    --v-faint:         #6d6c67;
    --v-accent:        #8ab4f8;
    --v-accent-soft:   rgba(138, 180, 248, 0.12);
    --v-code-bg:       #131519;
    --v-nav-bg:        rgba(23, 25, 29, 0.72);
    --v-grid-line:     rgba(233, 231, 226, 0.04);
    --v-shadow:        0 16px 40px rgba(0, 0, 0, 0.35);

    --v-serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
    --v-mono:  ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code", Menlo, Consolas, monospace;
    --v-sans:  var(--body-font), system-ui, sans-serif;
}

html[data-v-theme="light"] {
    color-scheme: light;

    --v-bg:            #f7f6f3;
    --v-surface:       #ffffff;
    --v-surface-2:     #efeee9;
    --v-border:        #e4e2dc;
    --v-border-strong: #c9c7bf;
    --v-text:          #1b1c1e;
    --v-muted:         #5c5b56;
    --v-faint:         #8b8a83;
    --v-accent:        #2f55c4;
    --v-accent-soft:   rgba(47, 85, 196, 0.10);
    --v-code-bg:       #f0efe9;
    --v-nav-bg:        rgba(255, 255, 255, 0.75);
    --v-grid-line:     rgba(27, 28, 30, 0.045);
    --v-shadow:        0 16px 40px rgba(27, 28, 30, 0.09);
}

/* --------------------------------------------------------------------------
   2. Mercury 变量映射 — 让博客原生页面跟随双主题
   -------------------------------------------------------------------------- */

html[data-v-theme="dark"] {
    --white:            var(--v-surface);
    --black:            var(--v-bg);
    --dark:             var(--v-text);
    --gray-1:           var(--v-muted);
    --gray-2:           var(--v-faint);
    --light:            var(--v-border);
    --lighter:          var(--v-bg);
    --text-color:       var(--v-text);
    --headings-color:   var(--v-text);
    --link-color:       var(--v-accent);
    --link-color-hover: var(--v-text);
}

html[data-v-theme="light"] {
    --white:            var(--v-surface);
    --black:            var(--v-bg);
    --light:            var(--v-border);
    --lighter:          var(--v-bg);
    --link-color:       var(--v-accent);
    --link-color-hover: var(--v-text);
}

/* body 背景与 header/footer 统一为 --v-bg，避免浅色模式下的色块感 */
body {
    background: var(--v-bg);
}

/* 主题切换时的平滑过渡（仅 JS 可用时启用） */
html[data-v-theme-anim] body,
html[data-v-theme-anim] .container,
html[data-v-theme-anim] .header,
html[data-v-theme-anim] .footer,
html[data-v-theme-anim] .v-section,
html[data-v-theme-anim] .v-project,
html[data-v-theme-anim] .v-stack__item,
html[data-v-theme-anim] .c-card {
    transition: background-color 0.35s ease, color 0.35s ease, border-color 0.35s ease;
}

/* --------------------------------------------------------------------------
   3. 基础
   -------------------------------------------------------------------------- */

::selection {
    background: var(--v-accent-soft);
    color: var(--v-text);
}

.v-page {
    background: var(--v-bg);
    color: var(--v-text);
}

/* Vino 页面整列使用页面底色 */
.container:has(> .v-page) {
    background: var(--v-bg);
}

/* Header 背景与页面融合（浅色模式下不再是突兀的纯白块） */
.header {
    background: var(--v-bg);
}

/* --------------------------------------------------------------------------
   4. Header 操作组（语言切换 + 主题切换）— 位于导航菜单左侧（Home 按钮旁）
   -------------------------------------------------------------------------- */

/* 导航栏为 flex 行：[操作组] [Home Blog Projects About]（右对齐） */
.navbar {
    align-items: center;
    display: flex;
    gap: 0.9rem;
    justify-content: flex-end;
}

.v-header-actions {
    align-items: center;
    background: var(--v-nav-bg);
    border: 1px solid var(--v-border);
    border-radius: 999px;
    display: flex;
    flex: none;
    gap: 0.2rem;
    margin-right: 0.35rem;
    padding: 0.2rem 0.5rem;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.v-header-actions__divider {
    background: var(--v-border);
    height: 1.05rem;
    width: 1px;
}

/* 语言切换（EN / 中） */
.v-lang-toggle {
    align-items: center;
    background: none;
    border: none;
    border-radius: 999px;
    color: var(--v-muted);
    cursor: pointer;
    display: flex;
    gap: 0.15rem;
    padding: 0;
}

.v-lang-toggle__opt {
    border-radius: 999px;
    color: var(--v-faint);
    font-family: var(--v-mono);
    font-size: 0.66rem;
    letter-spacing: 0.04em;
    line-height: 1;
    padding: 0.32rem 0.42rem;
    transition: color 0.2s ease, background-color 0.2s ease;
}

.v-lang-toggle__opt.is-active {
    background: var(--v-accent-soft);
    color: var(--v-accent);
}

.v-lang-toggle:hover .v-lang-toggle__opt:not(.is-active) {
    color: var(--v-text);
}

.v-lang-toggle:focus-visible {
    outline: 1px dashed var(--v-accent);
    outline-offset: 2px;
}

/* 主题切换 */
.v-theme-toggle {
    align-items: center;
    background: none;
    border: none;
    border-radius: 50%;
    color: var(--v-muted);
    cursor: pointer;
    display: inline-flex;
    height: 1.9rem;
    justify-content: center;
    padding: 0;
    transition: color 0.2s ease;
    width: 1.9rem;
}

.v-theme-toggle:hover,
.v-theme-toggle:focus-visible {
    color: var(--v-accent);
    outline: none;
}

.v-theme-toggle__icon--moon { display: block; }
.v-theme-toggle__icon--sun  { display: none; }

html[data-v-theme="dark"] .v-theme-toggle__icon--moon { display: none; }
html[data-v-theme="dark"] .v-theme-toggle__icon--sun  { display: block; }

/* --------------------------------------------------------------------------
   5. 区块骨架
   -------------------------------------------------------------------------- */

.v-section {
    border-top: 1px solid var(--v-border);
    padding: clamp(3rem, 7vw, 5.5rem) 0;
}

.v-section__inner {
    margin: 0 auto;
    max-width: 68rem;
    padding: 0 var(--page-margin);
    width: 100%;
}

.v-section__head {
    align-items: baseline;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.25rem;
    margin-bottom: clamp(1.5rem, 3.5vw, 2.5rem);
}

.v-section__title {
    font-family: var(--v-serif);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 500;
    letter-spacing: -0.01em;
    margin: 0;
}

.v-section__link {
    color: var(--v-muted);
    font-family: var(--v-mono);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    margin-left: auto;
    text-decoration: none;
    text-transform: uppercase;
    transition: color 0.2s ease;
}

.v-section__link:hover,
.v-section__link:focus-visible {
    color: var(--v-accent);
}

/* --------------------------------------------------------------------------
   6. Hero — 编辑部式
   -------------------------------------------------------------------------- */

.v-hero {
    margin-left: calc(-1 * var(--page-margin));
    margin-right: calc(-1 * var(--page-margin));
    margin-top: -2rem;
    overflow: hidden;
    padding: clamp(4rem, 9vw, 7.5rem) 0 clamp(3.5rem, 7vw, 6rem);
    position: relative;
}

.v-hero__field {
    height: 100%;
    inset: 0;
    left: 0;
    position: absolute;
    top: 0;
    width: 100%;
    z-index: 0;
}

.v-hero__grid {
    background-image:
        linear-gradient(var(--v-grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--v-grid-line) 1px, transparent 1px);
    background-size: 44px 44px;
    height: 100%;
    inset: 0;
    left: 0;
    -webkit-mask-image: radial-gradient(ellipse 80% 70% at 30% 35%, #000 0%, transparent 75%);
    mask-image: radial-gradient(ellipse 80% 70% at 30% 35%, #000 0%, transparent 75%);
    position: absolute;
    top: 0;
    width: 100%;
    z-index: 0;
}

.v-hero__inner {
    margin: 0 auto;
    max-width: 68rem;
    padding: 0 var(--page-margin);
    position: relative;
    width: 100%;
    z-index: 1;
}

/* 首屏入场：子元素轻微上浮（reduced-motion 下自动禁用） */
.v-js .v-hero__inner > * {
    animation: v-hero-in 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) both;
}

.v-js .v-hero__inner > *:nth-child(2) { animation-delay: 0.07s; }
.v-js .v-hero__inner > *:nth-child(3) { animation-delay: 0.14s; }
.v-js .v-hero__inner > *:nth-child(4) { animation-delay: 0.21s; }
.v-js .v-hero__inner > *:nth-child(5) { animation-delay: 0.28s; }
.v-js .v-hero__inner > *:nth-child(6) { animation-delay: 0.35s; }

@keyframes v-hero-in {
    from {
        opacity: 0;
        transform: translateY(14px);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

.v-hero__meta {
    align-items: center;
    color: var(--v-faint);
    display: flex;
    font-family: var(--v-mono);
    font-size: 0.72rem;
    gap: 0.6rem;
    letter-spacing: 0.16em;
    margin: 0 0 1.75rem;
}

.v-hero__meta-text {
    font-size: inherit;
    letter-spacing: inherit;
}

.v-hero__signal {
    animation: v-signal 2.4s ease-in-out infinite;
    background: var(--v-accent);
    border-radius: 50%;
    display: inline-block;
    height: 0.4rem;
    width: 0.4rem;
}

@keyframes v-signal {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.25; }
}

.v-hero__title {
    font-family: var(--v-serif);
    font-size: clamp(3rem, 8.5vw, 6.25rem);
    font-weight: 500;
    letter-spacing: -0.025em;
    line-height: 1.0;
    margin: 0 0 1.25rem;
}

/* 标题末尾的强调色句点 — 编辑部式的点睛 */
.v-hero__title::after {
    color: var(--v-accent);
    content: ".";
}

.v-hero__sub {
    color: var(--v-muted);
    font-family: var(--v-serif);
    font-size: clamp(1.15rem, 2.4vw, 1.5rem);
    font-style: italic;
    font-weight: 400;
    letter-spacing: -0.005em;
    margin: 0 0 1.1rem;
    max-width: 46ch;
}

.v-hero__roles {
    color: var(--v-muted);
    font-family: var(--v-mono);
    font-size: 0.78rem;
    letter-spacing: 0.14em;
    line-height: 1.9;
    margin: 0 0 2.25rem;
    text-transform: uppercase;
    white-space: pre-line;
}

.v-hero__links {
    align-items: baseline;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 2.5rem;
    margin-bottom: 1.75rem;
}

.v-hero__chips {
    color: var(--v-faint);
    font-family: var(--v-mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    margin: 0;
}

/* 编辑部式文字链接（带滑出箭头） */
.v-link {
    align-items: baseline;
    color: var(--v-text);
    display: inline-flex;
    font-family: var(--v-mono);
    font-size: 0.82rem;
    gap: 0.45rem;
    letter-spacing: 0.06em;
    text-decoration: none;
}

.v-link__arrow {
    transition: transform 0.25s ease, color 0.25s ease;
}

.v-link:hover,
.v-link:focus-visible {
    color: var(--v-accent);
    outline: none;
}

.v-link:hover .v-link__arrow,
.v-link:focus-visible .v-link__arrow {
    transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   7. Writing — 编号索引列表
   -------------------------------------------------------------------------- */

.v-index {
    counter-reset: vno;
    list-style: none;
    margin: 0;
    padding: 0;
}

.v-index__row {
    border-top: 1px solid var(--v-border);
}

.v-index__row:last-child {
    border-bottom: 1px solid var(--v-border);
}

.v-index__link {
    align-items: baseline;
    color: inherit;
    display: grid;
    column-gap: 1.25rem;
    grid-template-columns: 4.5rem 8.5rem minmax(0, 1fr) auto 1.25rem;
    padding: 1.05rem 0.25rem;
    text-decoration: none;
}

.v-index__no {
    font-family: var(--v-mono);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
}

.v-index__no::before {
    color: var(--v-faint);
    content: "No. " counter(vno, decimal-leading-zero);
    counter-increment: vno;
}

.v-index__cat {
    color: var(--v-faint);
    font-family: var(--v-mono);
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    overflow: hidden;
    text-overflow: ellipsis;
    text-transform: uppercase;
    white-space: nowrap;
}

.v-index__title {
    font-size: clamp(1rem, 1.6vw, 1.15rem);
    font-weight: 550;
    letter-spacing: -0.005em;
    line-height: 1.4;
    transition: color 0.2s ease;
}

.v-index__date {
    color: var(--v-faint);
    font-family: var(--v-mono);
    font-size: 0.72rem;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.v-index__arrow {
    color: var(--v-accent);
    font-size: 0.9rem;
    opacity: 0;
    transform: translateX(-6px);
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.v-index__link:hover .v-index__title,
.v-index__link:focus-visible .v-index__title {
    color: var(--v-accent);
}

.v-index__link:hover .v-index__arrow,
.v-index__link:focus-visible .v-index__arrow {
    opacity: 1;
    transform: none;
}

.v-index__link:focus-visible {
    outline: 1px dashed var(--v-accent);
    outline-offset: 4px;
}

/* --------------------------------------------------------------------------
   8. Projects — 编号项目卡
   -------------------------------------------------------------------------- */

.v-projects__grid {
    counter-reset: pno;
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(2, 1fr);
}

.v-project {
    background: var(--v-surface);
    border: 1px solid var(--v-border);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1.6rem 1.6rem 1.35rem;
    position: relative;
    transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.v-project__no {
    color: var(--v-border-strong);
    display: block;
    font-family: var(--v-serif);
    font-size: 2.6rem;
    font-weight: 400;
    line-height: 1;
    position: absolute;
    right: 1.4rem;
    top: 1.2rem;
    transition: color 0.25s ease;
}

.v-project__no::before {
    content: counter(pno, decimal-leading-zero);
    counter-increment: pno;
}

.v-project__head {
    align-items: baseline;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 0.75rem;
    margin-right: 3.5rem;
}

/* 文章版项目卡：正文首图作为封面 */
.v-project__media {
    aspect-ratio: 16 / 9;
    background: var(--v-surface-2);
    border-radius: 2px;
    margin: -0.35rem 0 0;
    overflow: hidden;
}

.v-project__media img {
    display: block;
    height: 100%;
    -o-object-fit: cover;
    object-fit: cover;
    transition: transform 0.45s ease;
    width: 100%;
}

.v-project:hover .v-project__media img,
.v-project:focus-within .v-project__media img {
    transform: scale(1.035);
}

.v-project__name a {
    color: inherit;
    text-decoration: none;
}

.v-project__name a:hover,
.v-project__name a:focus-visible {
    color: var(--v-accent);
}

.v-project__date {
    color: var(--v-faint);
    font-family: var(--v-mono);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    margin-left: auto;
    white-space: nowrap;
}

.v-project__name {
    font-family: var(--v-serif);
    font-size: 1.35rem;
    font-weight: 550;
    letter-spacing: -0.01em;
    margin: 0;
    transition: color 0.2s ease;
}

.v-project__type {
    border: 1px solid var(--v-border-strong);
    border-radius: 2px;
    color: var(--v-muted);
    flex: none;
    font-family: var(--v-mono);
    font-size: 0.62rem;
    letter-spacing: 0.12em;
    padding: 0.14rem 0.5rem;
    text-transform: uppercase;
}

.v-project__type--tool,
.v-project__type--plugin {
    border-color: var(--v-accent);
    color: var(--v-accent);
}

.v-project__desc {
    color: var(--v-muted);
    font-size: 0.92rem;
    line-height: 1.65;
    margin: 0;
    max-width: 52ch;
}

.v-project__stack {
    color: var(--v-faint);
    font-family: var(--v-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    margin: 0;
    text-transform: uppercase;
}

.v-project__links {
    border-top: 1px solid var(--v-border);
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1.5rem;
    margin-top: auto;
    padding-top: 0.85rem;
}

.v-project__link {
    color: var(--v-muted);
    font-family: var(--v-mono);
    font-size: 0.74rem;
    letter-spacing: 0.06em;
    text-decoration: none;
    transition: color 0.2s ease;
}

.v-project__link::before {
    content: "\2197\00a0";
    opacity: 0.6;
}

.v-project__link:hover,
.v-project__link:focus-visible {
    color: var(--v-accent);
}

.v-project:hover,
.v-project:focus-within {
    border-color: var(--v-border-strong);
    box-shadow: var(--v-shadow);
    transform: translateY(-3px);
}

.v-project:hover .v-project__name {
    color: var(--v-accent);
}

.v-project:hover .v-project__no {
    color: var(--v-faint);
}

/* --------------------------------------------------------------------------
   9. Toolchain — 紧凑清单
   -------------------------------------------------------------------------- */

.v-stack__grid {
    display: grid;
    gap: 1px;
    grid-template-columns: repeat(4, 1fr);
    list-style: none;
    margin: 0;
    padding: 0;
}

.v-stack__item {
    background: var(--v-surface);
    border: 1px solid var(--v-border);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin: 0 -0.5px -0.5px 0;
    padding: 1.05rem 1.15rem;
    transition: border-color 0.25s ease;
}

.v-stack__item:hover {
    border-color: var(--v-accent);
    position: relative;
    z-index: 1;
}

.v-stack__cat {
    color: var(--v-faint);
    font-family: var(--v-mono);
    font-size: 0.6rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.v-stack__cat--engine,
.v-stack__cat--language,
.v-stack__cat--shader {
    color: var(--v-accent);
}

.v-stack__name {
    font-family: var(--v-serif);
    font-size: 1.02rem;
    font-weight: 550;
}

.v-stack__note {
    color: var(--v-muted);
    font-size: 0.78rem;
    line-height: 1.5;
}

/* --------------------------------------------------------------------------
   10. About + 联系区块
   -------------------------------------------------------------------------- */

.v-about__grid {
    display: grid;
    gap: 3rem;
    grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
}

.v-about__kicker {
    color: var(--v-faint);
    font-family: var(--v-mono);
    font-size: 0.68rem;
    letter-spacing: 0.16em;
    margin: 0 0 0.75rem;
    text-transform: uppercase;
}

.v-about__title {
    font-family: var(--v-serif);
    font-size: clamp(1.6rem, 3vw, 2.1rem);
    font-weight: 500;
    letter-spacing: -0.015em;
    line-height: 1.15;
    margin: 0 0 0.9rem;
}

.v-about__lede {
    color: var(--v-muted);
    font-family: var(--v-serif);
    font-style: italic;
    font-size: 1.05rem;
    line-height: 1.6;
    margin: 0;
    max-width: 34ch;
}

.v-about__list {
    display: flex;
    flex-direction: column;
    gap: 1.3rem;
    margin: 0;
}

.v-about__row dt {
    color: var(--v-faint);
    font-family: var(--v-mono);
    font-size: 0.66rem;
    letter-spacing: 0.14em;
    margin-bottom: 0.3rem;
    text-transform: uppercase;
}

.v-about__row dd {
    border-left: 2px solid var(--v-border-strong);
    font-size: 0.98rem;
    line-height: 1.6;
    margin: 0;
    padding-left: 1rem;
}

/* --------------------------------------------------------------------------
   11. Archive（文章归档网格容器）
   -------------------------------------------------------------------------- */

.v-archive {
    border-top: 1px solid var(--v-border);
    padding: clamp(3rem, 7vw, 5.5rem) var(--page-margin) clamp(2.5rem, 6vw, 4.5rem);
    position: relative;
}

.v-archive__head {
    align-items: baseline;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.5rem;
    margin-bottom: 1.75rem;
}

.v-archive__title {
    font-family: var(--v-serif);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 500;
    letter-spacing: -0.01em;
    margin: 0;
}

.v-archive__count {
    color: var(--v-faint);
    font-family: var(--v-mono);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    margin: 0;
}

/* 让筛选按钮与 Vino 风格一致 */
.v-archive .filter__item {
    font-family: var(--v-mono);
}

/* 无图卡片的技术感占位图（网格纹理 + 角标），保证归档网格视觉完整 */
.c-card__header--placeholder {
    aspect-ratio: 16 / 9;
    background:
        radial-gradient(ellipse 90% 80% at 25% 15%, var(--v-accent-soft), transparent 65%),
        linear-gradient(var(--v-grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--v-grid-line) 1px, transparent 1px),
        var(--v-surface-2);
    background-size: auto, 26px 26px, 26px 26px, auto;
    position: relative;
}

.c-card__header--placeholder::after {
    border: 1px solid var(--v-border-strong);
    border-radius: 2px;
    bottom: 0.75rem;
    color: var(--v-faint);
    content: "TECH NOTES";
    font-family: var(--v-mono);
    font-size: 0.58rem;
    letter-spacing: 0.18em;
    left: 0.75rem;
    padding: 0.22rem 0.5rem;
    position: absolute;
}

/* 回退图（正文首图）与 Mercury 卡片图一致 */
.c-card__header img {
    display: block;
    height: auto;
    max-width: 100%;
}

/* --------------------------------------------------------------------------
   12. 通用页面头/正文（projects / about 独立页模板使用）
   -------------------------------------------------------------------------- */

.v-pagehead {
    margin-left: calc(-1 * var(--page-margin));
    margin-right: calc(-1 * var(--page-margin));
    margin-top: -2rem;
    padding: clamp(3.5rem, 8vw, 6.5rem) 0 clamp(2.5rem, 5vw, 4rem);
    position: relative;
}

.v-pagehead::before {
    background-image:
        linear-gradient(var(--v-grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--v-grid-line) 1px, transparent 1px);
    background-size: 44px 44px;
    bottom: 0;
    content: "";
    -webkit-mask-image: radial-gradient(ellipse 90% 100% at 30% 0%, #000 0%, transparent 80%);
    mask-image: radial-gradient(ellipse 90% 100% at 30% 0%, #000 0%, transparent 80%);
    left: 0;
    position: absolute;
    top: 0;
    width: 100%;
}

.v-pagehead__inner {
    margin: 0 auto;
    max-width: 68rem;
    padding: 0 var(--page-margin);
    position: relative;
}

.v-pagehead__meta {
    align-items: center;
    color: var(--v-muted);
    display: flex;
    font-family: var(--v-mono);
    font-size: 0.72rem;
    gap: 0.6rem;
    letter-spacing: 0.16em;
    margin: 0 0 1rem;
}

.v-pagehead__title {
    font-family: var(--v-serif);
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 500;
    letter-spacing: -0.02em;
    line-height: 1.05;
    margin: 0;
}

.v-pagebody {
    padding: clamp(2rem, 5vw, 4rem) 0;
}

.v-pagebody__inner {
    font-size: 1.02rem;
    line-height: 1.75;
    max-width: 70ch;
}

.v-pagebody__inner h2,
.v-pagebody__inner h3 {
    letter-spacing: -0.01em;
    margin: 2.2em 0 0.7em;
}

.v-pagebody__inner a {
    color: var(--v-accent);
}

.v-pagebody__inner code {
    background: var(--v-code-bg);
    border: 1px solid var(--v-border);
    border-radius: 3px;
    font-family: var(--v-mono);
    font-size: 0.88em;
    padding: 0.1em 0.4em;
}

.v-pagebody__inner pre {
    background: var(--v-code-bg);
    border: 1px solid var(--v-border);
    border-radius: 4px;
    overflow-x: auto;
    padding: 1.1rem 1.3rem;
}

.v-pagebody__inner pre code {
    background: none;
    border: none;
    padding: 0;
}

.v-pagebody__inner img {
    border-radius: 3px;
    max-width: 100%;
}

.v-pagebody__inner blockquote {
    border-left: 2px solid var(--v-accent);
    color: var(--v-muted);
    margin: 1.5em 0;
    padding-left: 1.2rem;
}

/* 按钮保留给独立页模板使用 */
.v-btn {
    align-items: center;
    border: 1px solid var(--v-border-strong);
    border-radius: 2px;
    color: var(--v-text);
    display: inline-flex;
    font-family: var(--v-mono);
    font-size: 0.82rem;
    gap: 0.5rem;
    letter-spacing: 0.05em;
    padding: 0.7rem 1.3rem;
    text-decoration: none;
    transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.v-btn:hover,
.v-btn:focus-visible {
    border-color: var(--v-accent);
    color: var(--v-accent);
    outline: none;
    transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   13. Footer
   -------------------------------------------------------------------------- */

.v-footer {
    border-top: 1px solid var(--v-border);
    margin-left: calc(-1 * var(--page-margin));
    margin-right: calc(-1 * var(--page-margin));
    margin-top: clamp(3rem, 7vw, 5rem);
    padding: 2.25rem var(--page-margin) 2rem;
}

.v-footer__inner {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem 2.5rem;
    justify-content: space-between;
    margin: 0 auto;
    max-width: 68rem;
}

.v-footer__tagline {
    color: var(--v-faint);
    font-family: var(--v-mono);
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    margin: 0.45rem 0 0;
    text-transform: uppercase;
}

/* 社交链接 — 等宽文字链，编辑部式 */
.v-footer__social {
    align-items: baseline;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1.4rem;
}

.v-footer__social-link {
    color: var(--v-muted);
    font-family: var(--v-mono);
    font-size: 0.76rem;
    letter-spacing: 0.05em;
    text-decoration: none;
    transition: color 0.2s ease;
}

.v-footer__social-link:hover,
.v-footer__social-link:focus-visible {
    color: var(--v-accent);
}

.v-footer__logo {
    color: var(--v-text);
    font-family: var(--v-serif);
    font-size: 1.15rem;
    font-weight: 550;
    letter-spacing: -0.01em;
    text-decoration: none;
}

.v-footer__logo::after {
    color: var(--v-accent);
    content: ".";
}

.v-footer__copyright {
    color: var(--v-faint);
    font-family: var(--v-mono);
    font-size: 0.68rem;
    margin: 1.6rem auto 0;
    max-width: 68rem;
}

/* --------------------------------------------------------------------------
   14. 滚动显现（仅 JS 可用时启用）
   -------------------------------------------------------------------------- */

.v-js .v-reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s cubic-bezier(0.22, 0.61, 0.36, 1), transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.v-js .v-reveal.is-visible {
    opacity: 1;
    transform: none;
}

/* --------------------------------------------------------------------------
   15. Reduced motion
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .v-js .v-reveal {
        opacity: 1;
        transform: none;
    }

    .v-hero__field {
        display: none;
    }
}

/* --------------------------------------------------------------------------
   16. 响应式
   -------------------------------------------------------------------------- */

@media all and (max-width: 56.1875em) {
    /* 移动端：汉堡 + 操作组紧跟 logo 左对齐，不与 search 挤压 */
    .navbar {
        justify-content: flex-start;
    }

    .v-header-actions {
        margin-left: 0.85rem;
        margin-right: 0;
    }

    .v-projects__grid {
        grid-template-columns: 1fr;
    }

    .v-stack__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .v-about__grid {
        gap: 2rem;
        grid-template-columns: 1fr;
    }

    .v-index__link {
        grid-template-columns: 4.5rem minmax(0, 1fr) auto;
        grid-template-areas:
            "no   cat  date"
            ".    title title";
        row-gap: 0.35rem;
    }

    .v-index__no     { grid-area: no; }
    .v-index__cat    { grid-area: cat; }
    .v-index__date   { grid-area: date; }
    .v-index__title  { grid-area: title; }
    .v-index__arrow  { display: none; }
}

@media all and (max-width: 37.4375em) {
    .v-stack__grid {
        grid-template-columns: 1fr;
    }

    /* 超小屏：操作组收紧，避免遮挡 logo/汉堡 */
    .v-header-actions {
        gap: 0.12rem;
        margin-left: 0.55rem;
        padding: 0.16rem 0.4rem;
    }

    .v-lang-toggle__opt {
        font-size: 0.6rem;
        padding: 0.28rem 0.34rem;
    }

    .v-hero__links {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.9rem;
    }

    .v-hero__meta-text {
        font-size: 0.58rem;
        letter-spacing: 0.16em;
    }

    .v-hero__chips {
        font-size: 0.62rem;
        letter-spacing: 0.1em;
    }

    .v-section__head {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.4rem;
    }

    .v-footer__inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .v-footer__social {
        gap: 0.35rem 1.1rem;
    }

    .v-index__link {
        grid-template-columns: minmax(0, 1fr) auto;
        grid-template-areas:
            "cat  date"
            "title title";
        row-gap: 0.3rem;
    }

    .v-index__no { display: none; }
}

/* --------------------------------------------------------------------------
   缺失图片的优雅降级
   站点早期备份丢失导致部分文章插图缺文件，这里把加载失败的 <img>
   整个隐藏（含包裹它的 <figure>），避免出现破图图标。
   -------------------------------------------------------------------------- */

.v-img-missing {
    display: none !important;
}