/*!
 * Nova — Typecho 主题样式
 * 清新科技感 · 响应式（PC / 平板 / 手机）· 明暗双主题
 * @version 1.0.0
 */

/* ==========================================================================
   1. 设计令牌
   ========================================================================== */

:root {
    /* 品牌色由 header.php 注入覆盖（--nova-brand-2 由主题色推导） */
    --nova-brand: #4f6bff;
    --nova-brand-2: #7c5cff;
    --nova-brand-soft: rgba(79, 107, 255, .12);
    --nova-brand-glow: rgba(79, 107, 255, .28);

    /* 圆角 */
    --nova-radius-sm: 8px;
    --nova-radius: 14px;
    --nova-radius-lg: 20px;
    --nova-radius-xl: 26px;

    /* 间距 */
    --nova-gap: 24px;
    --nova-gap-sm: 12px;
    --nova-gap-lg: 40px;

    /* 排版 */
    --nova-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    --nova-font-mono: "SFMono-Regular", "JetBrains Mono", Menlo, Consolas,
        "Liberation Mono", "Courier New", monospace;

    --nova-header-h: 64px;
    --nova-container: 1280px;

    --nova-ease: cubic-bezier(.4, 0, .2, 1);
    --nova-ease-out: cubic-bezier(.16, 1, .3, 1);

    /* 浅色主题 */
    --nova-bg: #f6f8fc;
    --nova-bg-soft: #eef2fa;
    --nova-surface: #ffffff;
    --nova-surface-2: #f9fbff;
    --nova-border: rgba(24, 42, 88, .09);
    --nova-border-strong: rgba(24, 42, 88, .16);
    --nova-text: #1b2340;
    --nova-text-soft: #4a5478;
    --nova-text-muted: #838cae;
    --nova-shadow-sm: 0 1px 2px rgba(20, 35, 80, .04), 0 2px 8px rgba(20, 35, 80, .04);
    --nova-shadow: 0 4px 16px rgba(20, 35, 80, .07), 0 12px 32px rgba(20, 35, 80, .05);
    --nova-shadow-lg: 0 10px 40px rgba(20, 35, 80, .12);
    --nova-code-bg: #f2f5fb;
    --nova-glass: rgba(255, 255, 255, .72);
}

/* 深色主题 */
[data-theme="dark"] {
    --nova-brand-soft: rgba(124, 140, 255, .18);
    --nova-brand-glow: rgba(124, 140, 255, .35);

    --nova-bg: #0c1020;
    --nova-bg-soft: #111731;
    --nova-surface: #161d38;
    --nova-surface-2: #1b2342;
    --nova-border: rgba(140, 165, 235, .13);
    --nova-border-strong: rgba(140, 165, 235, .24);
    --nova-text: #e8ecfb;
    --nova-text-soft: #a8b3d6;
    --nova-text-muted: #7481a8;
    --nova-shadow-sm: 0 1px 2px rgba(0, 0, 0, .3), 0 2px 8px rgba(0, 0, 0, .22);
    --nova-shadow: 0 4px 16px rgba(0, 0, 0, .34), 0 12px 32px rgba(0, 0, 0, .26);
    --nova-shadow-lg: 0 10px 40px rgba(0, 0, 0, .44);
    --nova-code-bg: #10172c;
    --nova-glass: rgba(22, 29, 56, .72);
}

/* ==========================================================================
   2. 基础重置
   ========================================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--nova-header-h) + 16px);
}

body {
    margin: 0;
    font-family: var(--nova-font);
    font-size: 15px;
    line-height: 1.7;
    color: var(--nova-text);
    background: var(--nova-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    transition: background-color .3s var(--nova-ease), color .3s var(--nova-ease);
}

/* 背景光晕 */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -2;
    background:
        radial-gradient(760px 460px at 12% -8%, var(--nova-brand-soft), transparent 62%),
        radial-gradient(680px 420px at 92% 4%, rgba(124, 92, 255, .1), transparent 60%);
    pointer-events: none;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color .2s var(--nova-ease);
}

button,
input,
textarea,
select {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
}

h1, h2, h3, h4, h5, h6 {
    margin: 0;
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: -.01em;
}

p {
    margin: 0;
}

ul, ol {
    margin: 0;
    padding: 0;
    list-style: none;
}

hr {
    border: 0;
    border-top: 1px solid var(--nova-border);
    margin: 2em 0;
}

code, kbd, pre, samp {
    font-family: var(--nova-font-mono);
    font-size: .92em;
}

::selection {
    background: var(--nova-brand);
    color: #fff;
}

/* 滚动条 */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--nova-border-strong);
    border-radius: 10px;
    border: 2px solid var(--nova-bg);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--nova-brand);
}

/* 辅助类 */
.sr-only {
    position: absolute !important;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.nova-skip {
    position: absolute;
    top: -60px;
    left: 16px;
    z-index: 200;
    padding: 10px 18px;
    background: var(--nova-brand);
    color: #fff;
    border-radius: var(--nova-radius-sm);
    font-weight: 600;
    transition: top .2s var(--nova-ease);
}

.nova-skip:focus {
    top: 16px;
}

.nova-icon {
    flex: none;
    vertical-align: -.18em;
}

/* ==========================================================================
   3. 布局容器
   ========================================================================== */

.nova-container {
    width: 100%;
    max-width: var(--nova-container);
    margin: 0 auto;
    padding: 0 24px;
}

.nova-page {
    padding: calc(var(--nova-header-h) + 32px) 0 64px;
}

/* 桌面端页脚沉底
   —— 内容不足一屏时页脚贴住视口底部，内容超过一屏时页脚仍在文档末尾
   仅在宽屏启用：窄屏单列时页脚本身较高，沉底反而显得局促 */
@media (min-width: 901px) {
    body.nova-footer-sticky {
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }

    /* 主内容区撑开剩余高度，把页脚推到底部 */
    body.nova-footer-sticky .nova-page {
        flex: 1 0 auto;
    }

    /* 页脚不被压缩 */
    body.nova-footer-sticky .nova-footer {
        flex-shrink: 0;
    }
}

/* 主内容 + 侧边栏 */
.nova-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: var(--nova-gap-lg);
    align-items: start;
}

.nova-grid--full {
    grid-template-columns: minmax(0, 1fr);
}

.nova-main__body {
    min-width: 0;
}

/* 侧边栏在左侧时调换列序 */
body.nova-sidebar-left .nova-grid {
    grid-template-columns: 300px minmax(0, 1fr);
}

body.nova-sidebar-left .nova-sidebar {
    order: -1;
}

body.nova-sidebar-none .nova-sidebar {
    display: none;
}

/* ==========================================================================
   4. 顶部导航
   ========================================================================== */

.nova-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 90;
    height: var(--nova-header-h);
    background: var(--nova-glass);
    backdrop-filter: saturate(180%) blur(16px);
    -webkit-backdrop-filter: saturate(180%) blur(16px);
    border-bottom: 1px solid var(--nova-border);
    transition: box-shadow .25s var(--nova-ease), background-color .3s var(--nova-ease);
}

.nova-header.is-stuck {
    box-shadow: var(--nova-shadow-sm);
}

.nova-header__inner {
    display: flex;
    align-items: center;
    gap: 20px;
    height: 100%;
}

.nova-header__left {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: none;
}

.nova-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.nova-brand__mark {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    flex: none;
    border-radius: 10px;
    color: #fff;
    background: linear-gradient(135deg, var(--nova-brand), var(--nova-brand-2));
    box-shadow: 0 4px 12px var(--nova-brand-glow);
}

.nova-brand__logo {
    width: 34px;
    height: 34px;
    object-fit: contain;
    border-radius: 10px;
}

.nova-brand__text {
    display: flex;
    flex-direction: column;
    line-height: 1.25;
    min-width: 0;
}

.nova-brand__text strong {
    font-size: 16px;
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nova-brand__text em {
    font-size: 11px;
    font-style: normal;
    color: var(--nova-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 导航链接 */
.nova-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
    overflow: hidden;
}

.nova-nav__link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 12px;
    border-radius: var(--nova-radius-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--nova-text-soft);
    white-space: nowrap;
    transition: background-color .2s var(--nova-ease), color .2s var(--nova-ease);
}

.nova-nav__link:hover {
    color: var(--nova-brand);
    background: var(--nova-brand-soft);
}

.nova-nav__link.is-active {
    color: var(--nova-brand);
    background: var(--nova-brand-soft);
    font-weight: 600;
}

.nova-nav__link .nova-icon {
    display: none;
}

/* 右侧操作区 */
.nova-header__actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
    flex: none;
}

.nova-nav + .nova-header__actions {
    margin-left: 12px;
}

.nova-icon-btn {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    flex: none;
    border-radius: 10px;
    color: var(--nova-text-soft);
    border: 1px solid transparent;
    transition: background-color .2s var(--nova-ease), color .2s var(--nova-ease),
        border-color .2s var(--nova-ease), transform .2s var(--nova-ease);
}

.nova-icon-btn:hover {
    color: var(--nova-brand);
    background: var(--nova-brand-soft);
    border-color: var(--nova-border);
}

.nova-icon-btn:active {
    transform: scale(.94);
}

.nova-header__burger {
    display: none;
}

/* 顶栏 GitHub 入口 */
.nova-header__github:hover {
    color: var(--nova-text);
    background: var(--nova-surface-2);
}

/* 顶部搜索 */
.nova-search {
    position: relative;
    display: flex;
    align-items: center;
}

.nova-search__icon {
    position: absolute;
    left: 11px;
    color: var(--nova-text-muted);
    pointer-events: none;
}

.nova-search__input {
    width: 190px;
    height: 36px;
    padding: 0 14px 0 34px;
    font-size: 13.5px;
    color: var(--nova-text);
    background: var(--nova-surface-2);
    border: 1px solid var(--nova-border);
    border-radius: 10px;
    outline: none;
    transition: width .3s var(--nova-ease), border-color .2s var(--nova-ease),
        box-shadow .2s var(--nova-ease), background-color .3s var(--nova-ease);
}

.nova-search__input::placeholder {
    color: var(--nova-text-muted);
}

.nova-search__input:focus {
    width: 230px;
    border-color: var(--nova-brand);
    background: var(--nova-surface);
    box-shadow: 0 0 0 3px var(--nova-brand-soft);
}

/* 主题切换图标 */
.nova-theme-icon {
    display: grid;
    place-items: center;
}

.nova-theme-icon--moon {
    display: none;
}

[data-theme="dark"] .nova-theme-icon--sun {
    display: none;
}

[data-theme="dark"] .nova-theme-icon--moon {
    display: grid;
}

/* ==========================================================================
   5. 移动端抽屉导航
   ========================================================================== */

.nova-backdrop {
    position: fixed;
    inset: 0;
    z-index: 95;
    background: rgba(12, 18, 40, .5);
    backdrop-filter: blur(3px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .28s var(--nova-ease), visibility .28s var(--nova-ease);
}

.nova-drawer {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 96;
    width: min(300px, 84vw);
    display: flex;
    flex-direction: column;
    background: var(--nova-surface);
    border-right: 1px solid var(--nova-border);
    box-shadow: var(--nova-shadow-lg);
    transform: translateX(-100%);
    visibility: hidden;
    transition: transform .32s var(--nova-ease-out), visibility .32s var(--nova-ease-out);
}

body.nova-drawer-open {
    overflow: hidden;
}

body.nova-drawer-open .nova-backdrop {
    opacity: 1;
    visibility: visible;
}

body.nova-drawer-open .nova-drawer {
    transform: translateX(0);
    visibility: visible;
}

.nova-drawer__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nova-header-h);
    padding: 0 16px 0 20px;
    border-bottom: 1px solid var(--nova-border);
    flex: none;
}

.nova-drawer__title {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 15px;
}

.nova-drawer__title .nova-icon {
    color: var(--nova-brand);
}

.nova-drawer__nav {
    flex: 1;
    overflow-y: auto;
    padding: 14px;
}

.nova-drawer__link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    margin-bottom: 4px;
    border-radius: var(--nova-radius-sm);
    color: var(--nova-text-soft);
    font-weight: 500;
    transition: background-color .2s var(--nova-ease), color .2s var(--nova-ease);
}

.nova-drawer__link:hover,
.nova-drawer__link.is-active {
    background: var(--nova-brand-soft);
    color: var(--nova-brand);
}

.nova-drawer__foot {
    padding: 16px 20px;
    border-top: 1px solid var(--nova-border);
    flex: none;
}

/* ==========================================================================
   6. 通用组件
   ========================================================================== */

/* 按钮 */
.nova-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 10px 20px;
    border-radius: 11px;
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
    border: 1px solid transparent;
    transition: transform .2s var(--nova-ease), box-shadow .2s var(--nova-ease),
        background-color .2s var(--nova-ease), color .2s var(--nova-ease),
        border-color .2s var(--nova-ease);
}

.nova-btn:active {
    transform: translateY(1px);
}

.nova-btn--primary {
    color: #fff;
    background: linear-gradient(135deg, var(--nova-brand), var(--nova-brand-2));
    box-shadow: 0 4px 14px var(--nova-brand-glow);
}

.nova-btn--primary:hover {
    box-shadow: 0 8px 22px var(--nova-brand-glow);
    transform: translateY(-1px);
}

.nova-btn--ghost {
    color: var(--nova-text-soft);
    background: var(--nova-surface);
    border-color: var(--nova-border);
}

.nova-btn--ghost:hover {
    color: var(--nova-brand);
    border-color: var(--nova-brand);
    background: var(--nova-brand-soft);
}

.nova-btn--sm {
    padding: 7px 14px;
    font-size: 13px;
    border-radius: 9px;
}

/* 区块标题 */
.nova-section-head {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 22px;
}

.nova-section-title {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 19px;
    font-weight: 700;
    letter-spacing: -.015em;
}

.nova-section-title__code,
.nova-widget__code {
    font-family: var(--nova-font-mono);
    font-size: 15px;
    font-weight: 600;
    color: var(--nova-brand);
    letter-spacing: -.5px;
}

.nova-section-head__line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--nova-border-strong), transparent);
}

/* 页面标题（归档 / 404） */
.nova-page-head {
    margin-bottom: 28px;
    padding: 24px 26px;
    border-radius: var(--nova-radius-lg);
    background: var(--nova-surface);
    border: 1px solid var(--nova-border);
    box-shadow: var(--nova-shadow-sm);
}

.nova-page-head__title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 22px;
    margin-bottom: 6px;
}

.nova-page-head__desc {
    color: var(--nova-text-muted);
    font-size: 14px;
}

.nova-page-head__nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
}

/* ==========================================================================
   7. 首页个人名片
   ========================================================================== */

.nova-hero {
    position: relative;
    margin-bottom: 32px;
    padding: 34px 32px;
    border-radius: var(--nova-radius-xl);
    background: var(--nova-surface);
    border: 1px solid var(--nova-border);
    box-shadow: var(--nova-shadow);
    overflow: hidden;
}

.nova-hero__bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: .22;
}

.nova-hero__glow {
    position: absolute;
    top: -60%;
    right: -12%;
    width: 460px;
    height: 460px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--nova-brand-glow), transparent 68%);
    pointer-events: none;
}

.nova-hero--cover .nova-hero__bg {
    opacity: .35;
}

.nova-hero__inner {
    position: relative;
    z-index: 1;
}

.nova-hero__quote {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    margin-bottom: 22px;
    padding: 6px 14px 6px 12px;
    border-radius: 999px;
    font-size: 13px;
    color: var(--nova-text-soft);
    background: var(--nova-brand-soft);
    border: 1px solid var(--nova-border);
}

.nova-hero__dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--nova-brand);
    box-shadow: 0 0 0 4px var(--nova-brand-soft);
    animation: nova-pulse 2.4s var(--nova-ease) infinite;
}

@keyframes nova-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: .55; transform: scale(.82); }
}

.nova-hero__profile {
    display: flex;
    align-items: center;
    gap: 22px;
    flex-wrap: wrap;
}

.nova-hero__avatar {
    position: relative;
    display: block;
    width: 88px;
    height: 88px;
    flex: none;
    border-radius: 26px;
    padding: 3px;
    background: linear-gradient(135deg, var(--nova-brand), var(--nova-brand-2));
    box-shadow: 0 10px 28px var(--nova-brand-glow);
}

.nova-hero__avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 23px;
    background: var(--nova-surface);
}

.nova-hero__meta {
    min-width: 0;
}

.nova-hero__name {
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex-wrap: wrap;
    font-size: 26px;
    letter-spacing: -.02em;
}

.nova-hero__desc {
    font-size: 14px;
    font-weight: 500;
    color: var(--nova-text-muted);
    letter-spacing: 0;
}

.nova-hero__sub {
    margin-top: 5px;
    font-size: 14px;
    color: var(--nova-text-soft);
}

.nova-hero__stats {
    display: flex;
    gap: 22px;
    margin-top: 14px;
    flex-wrap: wrap;
}

.nova-hero__stats li {
    display: flex;
    align-items: baseline;
    gap: 5px;
    font-size: 13px;
    color: var(--nova-text-muted);
}

.nova-hero__stats strong {
    font-size: 17px;
    font-weight: 700;
    color: var(--nova-brand);
    font-variant-numeric: tabular-nums;
}

.nova-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
    padding-top: 22px;
    border-top: 1px dashed var(--nova-border-strong);
}

/* ==========================================================================
   8. 文章卡片
   ========================================================================== */

.nova-post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
    gap: var(--nova-gap);
}

/* 横向列表布局 */
body.nova-layout-list .nova-post-grid {
    grid-template-columns: minmax(0, 1fr);
}

body.nova-layout-list .nova-card {
    display: grid;
    grid-template-columns: 268px minmax(0, 1fr);
    align-items: stretch;
}

body.nova-layout-list .nova-card__media {
    height: 100%;
    min-height: 180px;
    border-radius: 0;
}

body.nova-layout-list .nova-card__body {
    padding: 22px 26px;
}

.nova-card {
    position: relative;
    display: flex;
    flex-direction: column;
    border-radius: var(--nova-radius-lg);
    background: var(--nova-surface);
    border: 1px solid var(--nova-border);
    box-shadow: var(--nova-shadow-sm);
    overflow: hidden;
    transition: transform .32s var(--nova-ease-out), box-shadow .32s var(--nova-ease-out),
        border-color .32s var(--nova-ease);
}

/* 滚动入场（由 main.js 添加 is-revealed）
   渐进增强：只有 JS 就绪（html.nova-has-js）时才隐藏初始态，
   否则卡片必须直接可见，不能依赖 JS 才能显示内容。 */
.nova-has-js .nova-card:not(.is-revealed) {
    opacity: 0;
    transform: translateY(14px);
}

.nova-has-js .nova-card.is-revealed {
    opacity: 1;
    transform: translateY(0);
    transition: opacity .5s var(--nova-ease-out) var(--nova-reveal-delay, 0ms),
        transform .5s var(--nova-ease-out) var(--nova-reveal-delay, 0ms),
        box-shadow .32s var(--nova-ease-out),
        border-color .32s var(--nova-ease);
}

/* 不支持 IntersectionObserver 时直接显示，避免内容永久不可见 */
.nova-no-observer .nova-card {
    opacity: 1;
    transform: none;
}

.nova-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--nova-shadow);
    border-color: var(--nova-border-strong);
}

.nova-card.is-featured {
    border-color: var(--nova-brand);
}

.nova-card.is-featured::after {
    content: "推荐";
    position: absolute;
    top: 14px;
    right: -30px;
    z-index: 3;
    width: 96px;
    padding: 4px 0;
    text-align: center;
    font-size: 11px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--nova-brand), var(--nova-brand-2));
    transform: rotate(38deg);
    box-shadow: 0 2px 10px var(--nova-brand-glow);
}

/* 封面 */
.nova-card__media {
    position: relative;
    display: block;
    height: 178px;
    overflow: hidden;
    background: var(--nova-bg-soft);
}

.nova-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .6s var(--nova-ease-out);
}

.nova-card:hover .nova-card__media img {
    transform: scale(1.06);
}

/* 内置默认封面图 */
.nova-card__default {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* 无封面时的渐变占位 */
.nova-card__placeholder {
    position: absolute;
    inset: 0;
}

.nova-cover-1 { background: linear-gradient(135deg, #6f8cff, #9d6bff); }
.nova-cover-2 { background: linear-gradient(135deg, #43c6ac, #3f8cff); }
.nova-cover-3 { background: linear-gradient(135deg, #ff8f6b, #ff5f9e); }
.nova-cover-4 { background: linear-gradient(135deg, #4facfe, #00f2fe); }
.nova-cover-5 { background: linear-gradient(135deg, #f6d365, #fda085); }
.nova-cover-6 { background: linear-gradient(135deg, #5ee7df, #b490ca); }

.nova-card__glyph {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    color: rgba(255, 255, 255, .55);
}

.nova-card__shine {
    position: absolute;
    top: 0;
    left: -60%;
    width: 45%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .3), transparent);
    transform: skewX(-18deg);
    transition: left .75s var(--nova-ease-out);
}

.nova-card:hover .nova-card__shine {
    left: 120%;
}

/* 卡片内容 */
.nova-card__body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 20px 22px 18px;
}

.nova-card__cat {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    align-self: flex-start;
    padding: 3px 10px;
    margin-bottom: 11px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    color: var(--nova-brand);
    background: var(--nova-brand-soft);
    transition: background-color .2s var(--nova-ease);
}

.nova-card__cat:hover {
    background: var(--nova-brand);
    color: #fff;
}

.nova-card__title {
    font-size: 17px;
    line-height: 1.5;
    margin-bottom: 9px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.nova-card__title a {
    transition: color .2s var(--nova-ease);
}

.nova-card__title a:hover {
    color: var(--nova-brand);
}

.nova-card__excerpt {
    font-size: 13.5px;
    line-height: 1.75;
    color: var(--nova-text-muted);
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.nova-card__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 16px;
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid var(--nova-border);
    font-size: 12.5px;
    color: var(--nova-text-muted);
}

.nova-card__meta-item {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.nova-card__meta-item .nova-icon {
    color: var(--nova-text-muted);
    opacity: .8;
}

/* ==========================================================================
   9. 分页
   ========================================================================== */

.page-navigator {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 7px;
    margin-top: 32px;
    padding: 0;
    list-style: none;
}

.page-navigator li {
    display: block;
}

.page-navigator a,
.page-navigator span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 12px;
    border-radius: 10px;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--nova-text-soft);
    background: var(--nova-surface);
    border: 1px solid var(--nova-border);
    transition: all .2s var(--nova-ease);
}

.page-navigator a:hover {
    color: var(--nova-brand);
    border-color: var(--nova-brand);
    background: var(--nova-brand-soft);
    transform: translateY(-1px);
}

.page-navigator .current span,
.page-navigator li.current span {
    color: #fff;
    background: linear-gradient(135deg, var(--nova-brand), var(--nova-brand-2));
    border-color: transparent;
    box-shadow: 0 3px 10px var(--nova-brand-glow);
}

.page-navigator .next a,
.page-navigator .prev a {
    font-weight: 500;
}

/* ==========================================================================
   10. 侧边栏
   ========================================================================== */

.nova-sidebar {
    position: sticky;
    top: calc(var(--nova-header-h) + 24px);
    display: flex;
    flex-direction: column;
    gap: 18px;
    min-width: 0;
}

.nova-widget {
    padding: 20px 20px 18px;
    border-radius: var(--nova-radius-lg);
    background: var(--nova-surface);
    border: 1px solid var(--nova-border);
    box-shadow: var(--nova-shadow-sm);
}

.nova-widget__title {
    display: flex;
    align-items: center;
    gap: 7px;
    margin-bottom: 15px;
    font-size: 14.5px;
    font-weight: 700;
}

.nova-widget__search {
    position: relative;
    display: flex;
    align-items: center;
}

/* 侧栏搜索模块的标题不需要额外留白 */
.nova-widget--search .nova-widget__title {
    margin-bottom: 12px;
}

/* 统计模块 */
.nova-widget--stats .nova-stats li:first-child {
    padding-top: 0;
}

.nova-widget__search-input {
    width: 100%;
    height: 38px;
    padding: 0 40px 0 13px;
    font-size: 13.5px;
    color: var(--nova-text);
    background: var(--nova-surface-2);
    border: 1px solid var(--nova-border);
    border-radius: 10px;
    outline: none;
    transition: border-color .2s var(--nova-ease), box-shadow .2s var(--nova-ease),
        background-color .3s var(--nova-ease);
}

.nova-widget__search-input:focus {
    border-color: var(--nova-brand);
    background: var(--nova-surface);
    box-shadow: 0 0 0 3px var(--nova-brand-soft);
}

.nova-widget__search-btn {
    position: absolute;
    right: 5px;
    display: grid;
    place-items: center;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    color: var(--nova-text-muted);
    transition: color .2s var(--nova-ease), background-color .2s var(--nova-ease);
}

.nova-widget__search-btn:hover {
    color: #fff;
    background: var(--nova-brand);
}

/* 列表 */
.nova-widget__list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px dashed var(--nova-border);
    font-size: 13.5px;
}

.nova-widget__list li:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.nova-widget__list li > a {
    display: flex;
    align-items: center;
    gap: 9px;
    min-width: 0;
    flex: 1;
    color: var(--nova-text-soft);
}

.nova-widget__list li > a:hover {
    color: var(--nova-brand);
}

.nova-widget__dot {
    width: 5px;
    height: 5px;
    flex: none;
    border-radius: 50%;
    background: var(--nova-brand);
    opacity: .55;
    transition: transform .2s var(--nova-ease), opacity .2s var(--nova-ease);
}

.nova-widget__list li > a:hover .nova-widget__dot {
    transform: scale(1.5);
    opacity: 1;
}

.nova-widget__dot--comment {
    background: var(--nova-brand-2);
}

.nova-widget__link-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nova-widget__time {
    flex: none;
    font-size: 12px;
    color: var(--nova-text-muted);
    font-variant-numeric: tabular-nums;
}

.nova-widget__count {
    margin-left: auto;
    padding: 1px 7px;
    border-radius: 999px;
    font-size: 11px;
    color: var(--nova-text-muted);
    background: var(--nova-bg-soft);
}

/* 时间归档列表 */
.nova-widget__list--archive .nova-widget__link-text {
    font-variant-numeric: tabular-nums;
}

/* 最新回复列表 */
.nova-widget__list--comment .nova-widget__link-text {
    white-space: normal;
    line-height: 1.55;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 分类层级 */
.nova-widget__list .category-child {
    padding-left: 14px;
}

.nova-widget__list ul {
    padding-left: 14px;
}

/* 标签 */
.nova-widget__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.nova-tag {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 11px;
    border-radius: 999px;
    font-size: 12.5px;
    font-weight: 500;
    color: var(--nova-text-soft);
    background: var(--nova-surface-2);
    border: 1px solid var(--nova-border);
    transition: all .2s var(--nova-ease);
}

.nova-tag:hover {
    color: #fff;
    background: var(--nova-brand);
    border-color: var(--nova-brand);
    transform: translateY(-1px);
}

.nova-tag em {
    font-style: normal;
    font-size: 11px;
    opacity: .65;
}

/* 统计 */
.nova-stats {
    display: grid;
    gap: 2px;
}

.nova-stats li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 7px 0;
    font-size: 13px;
    border-bottom: 1px dashed var(--nova-border);
}

.nova-stats li:last-child {
    border-bottom: 0;
}

.nova-stats__label {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: var(--nova-text-muted);
}

.nova-stats__label .nova-icon {
    color: var(--nova-brand);
}

.nova-stats strong {
    font-size: 15px;
    font-weight: 700;
    color: var(--nova-text);
    font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   11. 文章页
   ========================================================================== */

.nova-post {
    border-radius: var(--nova-radius-lg);
    background: var(--nova-surface);
    border: 1px solid var(--nova-border);
    box-shadow: var(--nova-shadow-sm);
    overflow: hidden;
}

.nova-post--page .nova-post__header--plain {
    background: linear-gradient(180deg, var(--nova-brand-soft), transparent);
}

.nova-post__header {
    position: relative;
}

.nova-post__cover {
    height: 300px;
    background-size: cover;
    background-position: center;
}

/* 文章页的默认封面横幅：底部加一层压暗，保证标题区可读 */
.nova-post__cover--default {
    position: relative;
}

.nova-post__cover--default::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 55%, var(--nova-bg) 100%);
}

.nova-post__header--plain {
    border-bottom: 1px solid var(--nova-border);
}

.nova-post__head {
    padding: 34px 36px 26px;
}

.nova-post__cats {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
}

.nova-post__cats a {
    padding: 3px 11px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    color: var(--nova-brand);
    background: var(--nova-brand-soft);
}

.nova-post__cats a:hover {
    background: var(--nova-brand);
    color: #fff;
}

.nova-post__title {
    font-size: 30px;
    line-height: 1.32;
    letter-spacing: -.022em;
    margin-bottom: 10px;
}

.nova-post__subtitle {
    font-size: 15px;
    color: var(--nova-text-muted);
    margin-bottom: 16px;
}

.nova-post__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 20px;
    font-size: 13px;
    color: var(--nova-text-muted);
}

.nova-post__meta li {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.nova-post__meta .nova-icon {
    color: var(--nova-brand);
    opacity: .8;
}

.nova-post__meta a:hover {
    color: var(--nova-brand);
}

.nova-post__body {
    padding: 6px 36px 32px;
}

.nova-post__tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    padding: 0 36px 28px;
}

.nova-post__tags a {
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 12.5px;
    color: var(--nova-text-soft);
    background: var(--nova-surface-2);
    border: 1px solid var(--nova-border);
}

.nova-post__tags a:hover {
    color: var(--nova-brand);
    border-color: var(--nova-brand);
    background: var(--nova-brand-soft);
}

.nova-post__foot {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 0 36px 28px;
}

.nova-post__nav {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
    padding: 20px 36px 26px;
    border-top: 1px solid var(--nova-border);
    background: var(--nova-surface-2);
}

.nova-post__nav-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px 16px;
    border-radius: var(--nova-radius);
    font-size: 14px;
    font-weight: 600;
    color: var(--nova-text);
    background: var(--nova-surface);
    border: 1px solid var(--nova-border);
    transition: all .2s var(--nova-ease);
}

.nova-post__nav-item em {
    font-style: normal;
    font-size: 12px;
    font-weight: 500;
    color: var(--nova-text-muted);
}

.nova-post__nav-item:hover {
    color: var(--nova-brand);
    border-color: var(--nova-brand);
    transform: translateY(-2px);
    box-shadow: var(--nova-shadow-sm);
}

.nova-post__nav-item--next {
    text-align: right;
}

/* ==========================================================================
   12. 正文排版（nova-prose）
   ========================================================================== */

.nova-prose {
    font-size: 15.5px;
    line-height: 1.85;
    color: var(--nova-text-soft);
    word-wrap: break-word;
}

.nova-prose > * + * {
    margin-top: 1.15em;
}

.nova-prose h1,
.nova-prose h2,
.nova-prose h3,
.nova-prose h4,
.nova-prose h5,
.nova-prose h6 {
    margin-top: 1.9em;
    color: var(--nova-text);
    scroll-margin-top: calc(var(--nova-header-h) + 20px);
}

.nova-prose h1 { font-size: 1.85em; }
.nova-prose h2 {
    font-size: 1.5em;
    padding-bottom: .4em;
    border-bottom: 1px solid var(--nova-border);
}
.nova-prose h3 { font-size: 1.24em; }
.nova-prose h4 { font-size: 1.1em; }
.nova-prose h5 { font-size: 1em; }
.nova-prose h6 { font-size: .95em; color: var(--nova-text-muted); }

.nova-prose p {
    margin-top: 1.15em;
}

.nova-prose a {
    color: var(--nova-brand);
    text-decoration: underline;
    text-decoration-color: var(--nova-brand-glow);
    text-underline-offset: 3px;
    transition: text-decoration-color .2s var(--nova-ease);
}

.nova-prose a:hover {
    text-decoration-color: var(--nova-brand);
}

.nova-prose strong {
    color: var(--nova-text);
    font-weight: 700;
}

.nova-prose ul,
.nova-prose ol {
    padding-left: 1.4em;
    margin-top: 1.15em;
}

.nova-prose ul {
    list-style: disc;
}

.nova-prose ol {
    list-style: decimal;
}

.nova-prose li {
    margin-top: .5em;
}

.nova-prose li::marker {
    color: var(--nova-brand);
}

.nova-prose blockquote {
    margin: 1.5em 0;
    padding: 16px 20px;
    border-left: 3px solid var(--nova-brand);
    border-radius: 0 var(--nova-radius) var(--nova-radius) 0;
    background: var(--nova-brand-soft);
    color: var(--nova-text);
}

.nova-prose blockquote > *:first-child {
    margin-top: 0;
}

.nova-prose blockquote > *:last-child {
    margin-bottom: 0;
}

.nova-prose code {
    padding: .15em .42em;
    border-radius: 6px;
    font-size: .88em;
    background: var(--nova-code-bg);
    color: var(--nova-brand);
    border: 1px solid var(--nova-border);
}

.nova-prose pre {
    position: relative;
    margin: 1.6em 0;
    padding: 20px 22px;
    border-radius: var(--nova-radius);
    background: var(--nova-code-bg);
    border: 1px solid var(--nova-border);
    overflow-x: auto;
    font-size: 13.5px;
    line-height: 1.7;
}

.nova-prose pre code {
    padding: 0;
    border: 0;
    background: none;
    color: var(--nova-text);
    font-size: inherit;
}

/* 代码复制按钮 */
.nova-copy-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 4px 11px;
    font-size: 11.5px;
    font-weight: 600;
    color: var(--nova-text-muted);
    background: var(--nova-surface);
    border: 1px solid var(--nova-border);
    border-radius: 7px;
    opacity: 0;
    transition: opacity .2s var(--nova-ease), color .2s var(--nova-ease),
        border-color .2s var(--nova-ease);
}

.nova-prose pre:hover .nova-copy-btn,
.nova-copy-btn:focus {
    opacity: 1;
}

.nova-copy-btn:hover {
    color: var(--nova-brand);
    border-color: var(--nova-brand);
}

.nova-copy-btn.is-done {
    color: #fff;
    background: var(--nova-brand);
    border-color: var(--nova-brand);
    opacity: 1;
}

.nova-prose img {
    max-width: 100%;
    border-radius: var(--nova-radius);
    box-shadow: var(--nova-shadow-sm);
    margin: 1.5em auto;
}

.nova-prose table {
    width: 100%;
    margin: 1.6em 0;
    border-collapse: collapse;
    font-size: 14px;
    display: block;
    overflow-x: auto;
}

.nova-prose th,
.nova-prose td {
    padding: 10px 14px;
    border: 1px solid var(--nova-border);
    text-align: left;
}

.nova-prose th {
    background: var(--nova-surface-2);
    color: var(--nova-text);
    font-weight: 700;
}

.nova-prose tbody tr:nth-child(even) {
    background: var(--nova-surface-2);
}

.nova-prose hr {
    margin: 2.2em 0;
}

.nova-prose kbd {
    padding: .1em .5em;
    border-radius: 5px;
    background: var(--nova-surface-2);
    border: 1px solid var(--nova-border-strong);
    border-bottom-width: 2px;
    font-size: .85em;
}

/* ==========================================================================
   13. 评论区
   ========================================================================== */

.nova-comments {
    margin-top: var(--nova-gap);
    padding: 28px 30px 30px;
    border-radius: var(--nova-radius-lg);
    background: var(--nova-surface);
    border: 1px solid var(--nova-border);
    box-shadow: var(--nova-shadow-sm);
}

.nova-comments__list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.nova-comments__list .comment-body {
    padding: 16px 18px;
    border-radius: var(--nova-radius);
    background: var(--nova-surface-2);
    border: 1px solid var(--nova-border);
    list-style: none;
}

.nova-comments__list .comment-child {
    margin-left: 22px;
    padding-left: 16px;
    border-left: 2px solid var(--nova-brand-soft);
}

.nova-comments__list .comment-author {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.nova-comments__list .comment-author img,
.nova-comments__list .comment-author .avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 2px solid var(--nova-surface);
    box-shadow: var(--nova-shadow-sm);
}

.nova-comments__list .comment-author .fn {
    font-style: normal;
    font-weight: 700;
    font-size: 14px;
    color: var(--nova-text);
}

.nova-comments__list .comment-author a {
    color: var(--nova-brand);
}

.nova-comments__list .comment-meta {
    float: right;
    margin-left: 12px;
    font-size: 12px;
    color: var(--nova-text-muted);
}

.nova-comments__list .comment-meta time {
    color: var(--nova-text-muted);
}

.nova-comments__list .comment-content {
    font-size: 14.5px;
    line-height: 1.78;
    color: var(--nova-text-soft);
}

.nova-comments__list .comment-content p {
    margin: .6em 0;
}

.nova-comments__list .comment-reply {
    margin-top: 8px;
    text-align: right;
    font-size: 12.5px;
}

.nova-comments__list .comment-reply a {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 11px;
    border-radius: 999px;
    color: var(--nova-text-muted);
    background: var(--nova-surface);
    border: 1px solid var(--nova-border);
}

.nova-comments__list .comment-reply a:hover {
    color: var(--nova-brand);
    border-color: var(--nova-brand);
}

.nova-comments__empty {
    padding: 28px;
    text-align: center;
    color: var(--nova-text-muted);
    font-size: 14px;
}

/* 评论表单 */
.nova-respond {
    margin-top: 26px;
    padding-top: 24px;
    border-top: 1px solid var(--nova-border);
}

.nova-form {
    display: block;
}

.nova-respond__title {
    font-size: 16px;
    margin-bottom: 16px;
}

.nova-respond__cancel {
    font-size: 13px;
    margin-bottom: 10px;
}

.nova-respond__cancel a {
    color: var(--nova-brand);
}

.nova-form__tip {
    margin-bottom: 14px;
    font-size: 13px;
    color: var(--nova-text-muted);
}

.nova-form__tip a {
    color: var(--nova-brand);
}

.nova-form__row {
    margin-bottom: 14px;
}

.nova-form__label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--nova-text-soft);
}

.nova-form__input {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    color: var(--nova-text);
    background: var(--nova-surface-2);
    border: 1px solid var(--nova-border);
    border-radius: 10px;
    outline: none;
    transition: border-color .2s var(--nova-ease), box-shadow .2s var(--nova-ease),
        background-color .3s var(--nova-ease);
}

.nova-form__input:focus {
    border-color: var(--nova-brand);
    background: var(--nova-surface);
    box-shadow: 0 0 0 3px var(--nova-brand-soft);
}

.nova-form__textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.7;
}

.nova-form__foot {
    margin-top: 18px;
}

/* ==========================================================================
   14. 空状态 / 404
   ========================================================================== */

.nova-empty {
    padding: 64px 24px;
    text-align: center;
    border-radius: var(--nova-radius-lg);
    background: var(--nova-surface);
    border: 1px dashed var(--nova-border-strong);
}

.nova-empty__icon {
    display: inline-grid;
    place-items: center;
    width: 74px;
    height: 74px;
    margin-bottom: 18px;
    border-radius: 24px;
    color: var(--nova-brand);
    background: var(--nova-brand-soft);
}

.nova-empty h2 {
    font-size: 19px;
    margin-bottom: 8px;
}

.nova-empty p {
    color: var(--nova-text-muted);
    font-size: 14px;
    margin-bottom: 22px;
}

.nova-404 {
    padding: 60px 28px;
    text-align: center;
    border-radius: var(--nova-radius-lg);
    background: var(--nova-surface);
    border: 1px solid var(--nova-border);
    box-shadow: var(--nova-shadow-sm);
}

.nova-404__code {
    display: block;
    font-family: var(--nova-font-mono);
    font-size: 76px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: -.04em;
    background: linear-gradient(135deg, var(--nova-brand), var(--nova-brand-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 16px;
}

.nova-404__title {
    font-size: 22px;
    margin-bottom: 8px;
}

.nova-404__desc {
    color: var(--nova-text-muted);
    font-size: 14px;
    margin-bottom: 26px;
}

.nova-404__actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 28px;
}

.nova-404__search {
    position: relative;
    display: flex;
    align-items: center;
    max-width: 400px;
    margin: 0 auto;
}

/* ==========================================================================
   15. 页脚
   ========================================================================== */

.nova-footer {
    padding: 40px 0 32px;
    border-top: 1px solid var(--nova-border);
    background: var(--nova-surface);
}

.nova-footer__inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 22px;
}

.nova-footer__brand {
    display: flex;
    align-items: center;
    gap: 11px;
}

.nova-footer__brand strong {
    display: block;
    font-size: 15px;
}

.nova-footer__brand p {
    font-size: 13px;
    color: var(--nova-text-muted);
}

.nova-footer__links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 20px;
    font-size: 13.5px;
    color: var(--nova-text-muted);
}

.nova-footer__links a:hover {
    color: var(--nova-brand);
}

.nova-footer__meta {
    font-size: 12.5px;
    color: var(--nova-text-muted);
    text-align: right;
}

.nova-footer__meta p + p {
    margin-top: 3px;
}

.nova-footer__powered {
    opacity: .8;
}

.nova-footer__meta a:hover {
    color: var(--nova-brand);
}

/* 公安备案号 */
.nova-footer__police {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 5px;
    margin-top: 4px;
}

.nova-footer__police-icon {
    width: 16px;
    height: 16px;
    border-radius: 2px;
    object-fit: contain;
    opacity: .9;
}

/* 回到顶部 */
.nova-backtop {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 80;
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    color: #fff;
    background: linear-gradient(135deg, var(--nova-brand), var(--nova-brand-2));
    box-shadow: 0 6px 18px var(--nova-brand-glow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity .28s var(--nova-ease), transform .28s var(--nova-ease-out),
        visibility .28s var(--nova-ease), bottom .28s var(--nova-ease);
}

.nova-backtop.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nova-backtop:hover {
    transform: translateY(-3px);
}

/* 阅读进度条 */
.nova-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 95;
    height: 2px;
    pointer-events: none;
}

.nova-progress__bar {
    display: block;
    width: 0;
    height: 100%;
    background: linear-gradient(90deg, var(--nova-brand), var(--nova-brand-2));
    box-shadow: 0 0 8px var(--nova-brand-glow);
    transition: width .1s linear;
}

/* ==========================================================================
   16. 响应式
   ========================================================================== */

/* 大平板 / 小笔记本 */
@media (max-width: 1100px) {
    :root {
        --nova-container: 100%;
    }

    .nova-grid,
    body.nova-sidebar-left .nova-grid {
        grid-template-columns: minmax(0, 1fr) 280px;
        gap: var(--nova-gap);
    }

    .nova-search__input {
        width: 150px;
    }

    .nova-search__input:focus {
        width: 180px;
    }
}

/* 平板：侧边栏落到主栏下方 */
@media (max-width: 900px) {
    .nova-grid,
    body.nova-sidebar-left .nova-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    body.nova-sidebar-left .nova-sidebar {
        order: 0;
    }

    .nova-sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        gap: 16px;
    }

    body.nova-layout-list .nova-card {
        grid-template-columns: 220px minmax(0, 1fr);
    }

    .nova-post__title {
        font-size: 26px;
    }

    .nova-post__head {
        padding: 28px 26px 22px;
    }

    .nova-post__body {
        padding: 6px 26px 28px;
    }

    .nova-post__tags,
    .nova-post__foot {
        padding-left: 26px;
        padding-right: 26px;
    }

    .nova-post__nav {
        padding: 18px 26px 24px;
    }
}

/* 手机 */
@media (max-width: 720px) {
    body {
        font-size: 14.5px;
    }

    .nova-container {
        padding: 0 16px;
    }

    .nova-page {
        padding: calc(var(--nova-header-h) + 20px) 0 44px;
    }

    /* 顶部导航折叠 */
    .nova-nav {
        display: none;
    }

    .nova-header__burger {
        display: grid;
    }

    .nova-header__actions {
        margin-left: auto;
    }

    .nova-search {
        display: none;
    }

    .nova-brand__text em {
        display: none;
    }

    /* 个人名片 */
    .nova-hero {
        padding: 26px 20px;
        border-radius: var(--nova-radius-lg);
        margin-bottom: 24px;
    }

    .nova-hero__quote {
        font-size: 12.5px;
        margin-bottom: 18px;
    }

    .nova-hero__profile {
        gap: 16px;
    }

    .nova-hero__avatar {
        width: 68px;
        height: 68px;
        border-radius: 20px;
    }

    .nova-hero__avatar img {
        border-radius: 17px;
    }

    .nova-hero__name {
        font-size: 21px;
    }

    .nova-hero__stats {
        gap: 16px;
        margin-top: 12px;
    }

    .nova-hero__stats strong {
        font-size: 15px;
    }

    .nova-hero__actions {
        gap: 8px;
        margin-top: 18px;
        padding-top: 16px;
    }

    .nova-hero__actions .nova-btn {
        flex: 1 1 auto;
        min-width: 120px;
    }

    /* 卡片 */
    .nova-post-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 16px;
    }

    body.nova-layout-list .nova-card {
        grid-template-columns: minmax(0, 1fr);
    }

    body.nova-layout-list .nova-card__media {
        height: 168px;
        min-height: 0;
    }

    .nova-card__media {
        height: 168px;
    }

    .nova-card__body {
        padding: 17px 18px 16px;
    }

    .nova-card__title {
        font-size: 16px;
    }

    .nova-card__excerpt {
        font-size: 13px;
        -webkit-line-clamp: 2;
        line-clamp: 2;
    }

    .nova-card__meta {
        gap: 5px 12px;
        font-size: 12px;
    }

    /* 侧边栏 */
    .nova-sidebar {
        grid-template-columns: minmax(0, 1fr);
        gap: 14px;
    }

    .nova-widget {
        padding: 17px 17px 15px;
    }

    /* 文章页 */
    .nova-post__head {
        padding: 24px 18px 18px;
    }

    .nova-post__title {
        font-size: 21px;
    }

    .nova-post__subtitle {
        font-size: 14px;
    }

    .nova-post__body {
        padding: 4px 18px 24px;
        font-size: 15px;
    }

    .nova-post__tags,
    .nova-post__foot {
        padding-left: 18px;
        padding-right: 18px;
    }

    .nova-post__nav {
        grid-template-columns: minmax(0, 1fr);
        padding: 16px 18px 20px;
    }

    .nova-post__nav-item--next {
        text-align: left;
    }

    .nova-post__cover {
        height: 200px;
    }

    /* 评论 */
    .nova-comments {
        padding: 22px 17px 22px;
    }

    .nova-comments__list .comment-child {
        margin-left: 12px;
        padding-left: 12px;
    }

    /* 区块标题 */
    .nova-section-title {
        font-size: 17px;
    }

    .nova-page-head {
        padding: 18px 18px;
    }

    .nova-page-head__title {
        font-size: 19px;
    }

    /* 404 */
    .nova-404 {
        padding: 44px 18px;
    }

    .nova-404__code {
        font-size: 60px;
    }

    /* 页脚 */
    .nova-footer {
        padding: 30px 0 26px;
    }

    .nova-footer__inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .nova-footer__meta {
        text-align: left;
    }

    .nova-footer__police {
        justify-content: flex-start;
    }

    .nova-backtop {
        right: 14px;
        bottom: 14px;
        width: 40px;
        height: 40px;
    }

    .nova-prose h2 {
        font-size: 1.32em;
    }
}

/* 超窄屏 */
@media (max-width: 380px) {
    .nova-card__meta-item--reading {
        display: none;
    }

    .nova-hero__stats {
        gap: 12px;
    }
}

/* 平板与手机隐藏装饰 */
@media (hover: none) {
    .nova-card__shine {
        display: none;
    }
}

/* 打印 */
@media print {
    .nova-header,
    .nova-drawer,
    .nova-backdrop,
    .nova-sidebar,
    .nova-backtop,
    .nova-progress,
    .nova-footer,
    .nova-hero__actions,
    .nova-comments {
        display: none !important;
    }

    body {
        background: #fff;
        color: #000;
    }

    .nova-page {
        padding: 0;
    }

    .nova-post,
    .nova-card {
        border: 1px solid #ddd;
        box-shadow: none;
    }
}

/* 减少动效 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
        scroll-behavior: auto !important;
    }
}