/* ============================================
   MiniWeb Blog - 全局基础样式 (base.css)
   包含：变量 / Reset / Header / Nav / Footer /
        跨页面共享组件 / 公共 UI / 响应式
   ============================================ */

/* --- CSS Variables --- */
:root {
    /* 主色调 - 温暖靛蓝 */
    --color-primary: #5b5ef7;
    --color-primary-hover: #4a4eef;
    --color-primary-light: #eef0ff;
    --color-primary-dark: #3c3fd4;

    /* 强调色 - 温暖珊瑚 */
    --color-accent: #f9736e;
    --color-accent-light: #fff5f5;

    /* 背景色 */
    --color-bg: #f9fafc;
    --color-bg-alt: #f3f4f9;
    --color-surface: #ffffff;

    /* 文字色 */
    --color-text: #1a1a2e;
    --color-text-secondary: #5b6980;
    --color-text-muted: #949db0;
    --color-text-light: #b8c0d0;

    /* 边框 */
    --color-border: #e8ebf2;
    --color-border-light: #f2f4f8;

    /* 阴影 */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, .03);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, .04), 0 1px 2px rgba(0, 0, 0, .04);
    --shadow: 0 4px 12px rgba(0, 0, 0, .05), 0 1px 4px rgba(0, 0, 0, .04);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, .06), 0 2px 8px rgba(0, 0, 0, .04);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, .08), 0 4px 16px rgba(0, 0, 0, .04);

    /* 圆角 */
    --radius-xs: 6px;
    --radius-sm: 8px;
    --radius: 12px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-xl: 24px;

    /* 布局 */
    --max-width: 1200px;
    --content-width: 780px;
    --header-height: 64px;

    /* 过渡 */
    --transition: .25s cubic-bezier(.4, 0, .2, 1);
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial,
        "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.75;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    letter-spacing: .01em;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-primary-hover);
}

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

ul,
ol {
    list-style: none;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* ============================================
   Header
   ============================================ */
.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border-light);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 200;
    backdrop-filter: blur(12px);
    background: rgba(255, 255, 255, .85);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--color-text);
    flex-shrink: 0;
}

.logo:hover {
    color: var(--color-text);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--color-primary) 0%, #818cf8 100%);
    color: white;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 18px;
    box-shadow: 0 2px 8px rgba(91, 94, 247, .25);
}

.logo-name {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -.5px;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text {
    font-size: 16px;
    letter-spacing: -.5px;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: '#666';
}

/* ============================================
   Navigation
   ============================================ */
.site-nav {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border-light);
    position: sticky;
    top: 70px;
    z-index: 100;
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    height: var(--header-height);
    gap: 8px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2px;
}

.nav-link {
    display: block;
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    font-size: 15px;
    font-weight: 500;
    transition: all var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--color-primary);
    background: var(--color-primary-light);
}

.nav-link.active {
    color: var(--color-primary);
    background: var(--color-primary-light);
    font-weight: 600;
}

/* Search */
.nav-search {
    margin-left: auto;
    display: flex;
    align-items: center;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition);
    background: var(--color-bg);
}

.nav-search:focus-within {
    border-color: var(--color-primary);
    background: var(--color-surface);
    box-shadow: 0 0 0 3px rgba(91, 94, 247, .1);
}

.search-input {
    border: none;
    outline: none;
    padding: 8px 16px;
    font-size: 14px;
    width: 220px;
    background: transparent;
    color: var(--color-text);
    font-family: inherit;
}

.search-input::placeholder {
    color: var(--color-text-light);
}

.search-btn {
    background: none;
    border: none;
    padding: 8px 14px;
    cursor: pointer;
    color: var(--color-text-muted);
    transition: color var(--transition);
    display: flex;
    align-items: center;
}

.search-btn:hover {
    color: var(--color-primary);
}

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all .3s;
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
    flex: 1;
}

/* ============================================
   Profile Section (Home / About 共享组件)
   ============================================ */
.profile-section {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 56px 24px 40px;
}

.profile-card {
    display: flex;
    gap: 40px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow);
    border: 1px solid var(--color-border-light);
    transition: box-shadow var(--transition);
    align-items: flex-start;
}

.profile-card:hover {
    box-shadow: var(--shadow-md);
}

/* 左侧照片 */
.profile-avatar-wrap {
    flex-shrink: 0;
    width: 220px;
    min-height: 220px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    position: relative;
}

.profile-avatar-wrap::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 2px solid rgba(255, 255, 255, .2);
    border-radius: var(--radius-lg);
    pointer-events: none;
}

.profile-avatar {
    width: 100%;
    height: auto;
    object-fit: cover;
    transition: transform .4s ease;
}

.profile-avatar-wrap:hover .profile-avatar {
    transform: scale(1.05);
}

/* 右侧信息 */
.profile-info {
    flex: 1;
    min-width: 0;
}

.profile-name {
    font-size: 28px;
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: 4px;
    letter-spacing: -.5px;
}

.profile-title-role {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    background: var(--color-primary-light);
    padding: 4px 14px;
    border-radius: 100px;
    margin-bottom: 20px;
}

/* 信息网格 */
.profile-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px 24px;
}

.profile-detail-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.profile-detail-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    color: var(--color-primary);
}

.profile-detail-text {
    padding-top: 4px;
}

.profile-detail-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: .5px;
    margin-bottom: 2px;
}

.profile-detail-value {
    font-size: 14px;
    color: var(--color-text);
    font-weight: 500;
    line-height: 1.5;
}

/* 技能标签 */
.profile-skills {
    margin-top: 20px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.skill-tag {
    padding: 5px 14px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--color-primary-light), #e8e6ff);
    color: var(--color-primary);
    transition: all var(--transition);
    cursor: default;
}

.skill-tag:nth-child(3n-1) {
    background: linear-gradient(135deg, #fef3c7, #fef9c3);
    color: #b45309;
}

.skill-tag:nth-child(3n) {
    background: linear-gradient(135deg, #d1fae5, #c6f6d5);
    color: #047857;
}

/* 作品二维码 */
.profile-works {
    margin-top: 20px;
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 16px 20px;
    background: var(--color-bg-alt);
    border-radius: var(--radius);
    flex-wrap: wrap;
}

.profile-works-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-muted);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 6px;
}

.profile-works-label svg {
    color: var(--color-primary);
}

.qr-codes {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.qr-item {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.qr-img {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-xs);
    border: 1px solid var(--color-border);
    padding: 4px;
    background: white;
    object-fit: contain;
}

.qr-label {
    font-size: 11px;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* ============================================
   Page Header (通用)
   ============================================ */
.page-header {
    padding: 48px 24px 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 0 0 4px 4px;
}

.page-title {
    font-size: 34px;
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: 8px;
    letter-spacing: -1px;
}

.page-desc {
    color: var(--color-text-secondary);
    font-size: 16px;
    font-weight: 400;
}

/* ============================================
   文章卡片组件 (Home / Articles / Detail 共享)
   ============================================ */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 20px;
}

.article-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    border: 1px solid var(--color-border-light);
    padding: 28px;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.article-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    transition: opacity var(--transition);
}

.article-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-color: transparent;
}

.article-card:hover::before {
    opacity: 1;
}

.article-tag {
    display: inline-block;
    padding: 3px 12px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .3px;
    margin-bottom: 14px;
    width: fit-content;
}

.tag-golang {
    background: #eef2ff;
    color: #4f46e5;
}

.tag-web {
    background: #fce7f3;
    color: #be185d;
}

.tag-database {
    background: #d1fae5;
    color: #047857;
}

.tag-devops {
    background: #fef3c7;
    color: #b45309;
}

.tag-frontend {
    background: #ede9fe;
    color: #6d28d9;
}

.tag-other {
    background: #e0f2fe;
    color: #0369a1;
}

.article-title {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 10px;
    color: var(--color-text);
}

.article-title a:hover {
    color: var(--color-primary);
}

.article-excerpt {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    flex: 1;
    margin-bottom: 18px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 13px;
    color: var(--color-text-muted);
    padding-top: 16px;
    border-top: 1px solid var(--color-border-light);
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border-light);
    padding: 32px 24px;
    margin-top: auto;
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
}

.footer-brand .logo-icon {
    width: 28px;
    height: 28px;
    font-size: 14px;
    border-radius: 6px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 14px;
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--color-primary);
}

.footer-copy {
    width: 100%;
    text-align: center;
    padding-top: 16px;
    border-top: 1px solid var(--color-border-light);
    margin-top: 4px;
}

.footer-copy p {
    font-size: 13px;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

/* ============================================
   Empty State
   ============================================ */
.empty-state {
    text-align: center;
    padding: 60px 24px;
    color: var(--color-text-muted);
}

.empty-state svg {
    margin-bottom: 16px;
    color: var(--color-text-light);
}

.empty-state h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 14px;
}

/* ============================================
   Back to top
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    box-shadow: var(--shadow);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    z-index: 50;
    transition: all var(--transition);
    opacity: 0;
    transform: translateY(12px);
    pointer-events: none;
}

.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.back-to-top:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

/* ============================================
   通用按钮
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), #818cf8);
    color: white;
    box-shadow: 0 2px 10px rgba(91, 94, 247, .3);
}

.btn-primary:hover {
    box-shadow: 0 4px 16px rgba(91, 94, 247, .45);
    transform: translateY(-1px);
}

.btn-primary:disabled {
    opacity: .5;
    cursor: not-allowed;
    transform: none;
}

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--color-border);
    color: var(--color-text-secondary);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-light);
}

.btn-danger {
    background: transparent;
    border: 1.5px solid #ef4444;
    color: #ef4444;
}

.btn-danger:hover {
    background: #ef4444;
    color: white;
    box-shadow: 0 2px 10px rgba(239, 68, 68, .3);
    transform: translateY(-1px);
}

.btn-danger:disabled {
    opacity: .5;
    cursor: not-allowed;
    transform: none;
}

/* 编辑文章按钮 (Detail 页使用，公共组件) */
.btn-edit-article {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border: 1.5px solid var(--color-border);
    border-radius: 100px;
    background: transparent;
    color: var(--color-text-muted);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

.btn-edit-article:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-light);
}

/* ============================================
   通知提示 (Toast - 公共)
   ============================================ */
.editor-toast {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 1000;
    padding: 14px 24px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    animation: toastSlideIn .3s ease;
    max-width: 380px;
}

.editor-toast.success {
    background: #d1fae5;
    color: #047857;
    border: 1px solid #a7f3d0;
}

.editor-toast.error {
    background: #fee2e2;
    color: #b91c1c;
    border: 1px solid #fecaca;
}

.editor-toast.info {
    background: #eef2ff;
    color: #4338ca;
    border: 1px solid #c7d2fe;
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateX(60px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ============================================
   Modal / 弹窗 (公共)
   ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .45);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(3px);
    animation: modalFadeIn .2s ease;
}

@keyframes modalFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-dialog {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    width: 90%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
    animation: modalSlideIn .25s ease;
    overflow: hidden;
}

@keyframes modalSlideIn {
    from { transform: translateY(-20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 22px 24px 16px;
    border-bottom: 1px solid var(--color-border-light);
}

.modal-header h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-text);
}

.modal-close {
    background: none;
    border: none;
    font-size: 22px;
    color: var(--color-text-muted);
    cursor: pointer;
    line-height: 1;
    padding: 4px;
    border-radius: 4px;
    transition: all var(--transition);
}

.modal-close:hover {
    color: var(--color-accent);
    background: var(--color-accent-light);
}

.modal-body {
    padding: 20px 24px;
}

.modal-desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: 14px;
}

.modal-body .comment-input {
    width: 100%;
}

.modal-error {
    color: var(--color-accent);
    font-size: 13px;
    margin-top: 8px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 16px 24px 22px;
}

.modal-footer .btn {
    padding: 8px 22px;
    font-size: 13px;
}

/* ============================================
   Image Lightbox / 图片浏览浮动窗口 (公共)
   ============================================ */
.lightbox-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 17, 33, .92);
    backdrop-filter: blur(6px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity .25s ease;
}

.lightbox-overlay.open {
    opacity: 1;
}

.lightbox-image {
    max-width: 90vw;
    max-height: 82vh;
    border-radius: var(--radius-sm);
    box-shadow: 0 12px 48px rgba(0, 0, 0, .5);
    user-select: none;
    -webkit-user-drag: none;
    transform: scale(.94);
    transition: transform .25s ease;
}

.lightbox-overlay.open .lightbox-image {
    transform: scale(1);
}

/* 关闭按钮 */
.lightbox-close {
    position: absolute;
    top: 22px;
    right: 28px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .1);
    color: #fff;
    font-size: 28px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all .2s ease;
    z-index: 3;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, .22);
    transform: rotate(90deg);
}

/* 上下张切换按钮 */
.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .1);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all .2s ease;
    z-index: 3;
    user-select: none;
}

.lightbox-nav:hover {
    background: rgba(255, 255, 255, .22);
}

.lightbox-prev { left: 28px; }
.lightbox-next { right: 28px; }

/* 单图时隐藏切换按钮 */
.lightbox-overlay.single .lightbox-nav {
    display: none;
}

/* 底部说明文字 */
.lightbox-caption {
    position: absolute;
    bottom: 64px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, .85);
    font-size: 14px;
    text-align: center;
    max-width: 80vw;
    padding: 0 16px;
    line-height: 1.5;
    pointer-events: none;
}

.lightbox-counter {
    position: absolute;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, .6);
    font-size: 13px;
    letter-spacing: .5px;
    pointer-events: none;
}

/* 正文图片可点击预览的视觉提示 */
.detail-body img {
    cursor: zoom-in;
    transition: filter .2s ease, box-shadow var(--transition);
}

.detail-body img:hover {
    filter: brightness(.95);
}

.lightbox-image.loading {
    opacity: .4;
}

/* ============================================
   Responsive (全局响应式)
   ============================================ */
@media (max-width: 900px) {
    .profile-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 32px 24px;
        gap: 28px;
    }

    .profile-avatar-wrap {
        width: 160px;
        height: 160px;
        border-radius: 50%;
    }

    .profile-avatar-wrap::after {
        border-radius: 50%;
    }

    .profile-details {
        grid-template-columns: 1fr;
        text-align: left;
    }

    .profile-detail-item {
        justify-content: flex-start;
    }

    .profile-works {
        justify-content: center;
    }

    .qr-codes {
        justify-content: center;
    }

    .detail-title {
        font-size: 26px;
    }

    .detail-nav {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header-inner {
        padding: 12px 16px;
    }

    .site-nav {
        top: 62px;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-surface);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        padding: 8px 16px;
        box-shadow: var(--shadow-md);
        gap: 2px;
    }

    .nav-menu.open {
        display: flex;
    }

    .nav-inner {
        gap: 8px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-search {
        margin-left: 0;
        flex: 1;
        max-width: 100%;
    }

    .search-input {
        width: 100%;
    }

    .page-title {
        font-size: 26px;
    }

    .profile-section {
        padding: 32px 16px 24px;
    }

    .latest-section {
        padding: 0 16px 40px;
    }

    .article-grid {
        grid-template-columns: 1fr;
    }

    .about-content {
        grid-template-columns: 1fr;
        padding: 0 16px 40px;
    }

    .timeline-content {
        padding: 0 16px 40px;
    }

    .timeline-items {
        padding-left: 20px;
    }

    .tl-item {
        padding-left: 16px;
    }

    .blog-list-content {
        padding: 0 16px 40px;
    }

    .article-list-item {
        flex-direction: column;
        gap: 16px;
        padding: 20px;
    }

    .article-list-accent {
        width: 100%;
        min-height: 3px;
        align-self: auto;
        margin-top: 0;
    }

    .detail-content {
        padding: 0 16px 40px;
    }

    .detail-header {
        padding: 32px 0 24px;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 768px) {
    .lightbox-nav {
        width: 44px;
        height: 44px;
    }
    .lightbox-prev { left: 12px; }
    .lightbox-next { right: 12px; }
    .lightbox-close { top: 14px; right: 16px; }
    .lightbox-image { max-width: 94vw; max-height: 74vh; }
    .lightbox-caption { bottom: 56px; }
}