/* ------------------------------------
 * Typecho Douban Theme
 *
 * @author	ouyang@a85.net
 * @link	http://oyzm.cn
 * @update	2026-01-21
 * @description HTML5 responsive redesign with mobile-first approach
 * --------------------------------- */

/* ===================================
 * CSS Variables (Design Tokens)
 * ================================ */
:root {
    /* Colors */
    --color-primary: #0c7823;
    --color-primary-hover: #003399;
    --color-primary-active: #FF9933;
    --color-secondary: #566d5e;
    --color-accent: #219a44;
    --color-bg-main: #fff;
    --color-bg-nav: #e9f4e9;
    --color-bg-light: #f6f6f6;
    --color-bg-code: #f4f4f4;
    --color-text-primary: #444;
    --color-text-secondary: #666;
    --color-text-muted: #999;
    --color-text-link: #336699;
    --color-text-link-visited: #666699;
    --color-border: #ddd;
    --color-border-light: #eee;
    --color-success: #060;
    --color-danger: #C04E37;
    --color-comment-odd: #fff;
    --color-comment-even: #FAFAFA;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 20px;
    --spacing-xl: 40px;
    
    /* Typography */
    --font-family-base: "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, Helvetica, sans-serif;
    --font-family-code: 'Monaco', 'Consolas', 'andale mono', 'lucida console', monospace;
    --font-family-heading: "Lucida Grande", "Lucida Sans Unicode", "Lucida Sans", Helvetica, Arial, sans-serif;
    
    --font-size-base: 15px;
    --font-size-sm: 13px;
    --font-size-lg: 16px;
    --font-size-xl: 18px;
    
    --line-height-base: 1.7;
    --line-height-tight: 1.5;
    
    /* Layout */
    --container-max-width: 1400px;
    --container-padding: 20px;
    --content-width: 66.67%; /* 约10/15 */
    --sidebar-width: 26.67%; /* 约4/15 */
    
    /* Breakpoints */
    --breakpoint-mobile: 320px;
    --breakpoint-tablet: 768px;
    --breakpoint-desktop: 1025px;
    --breakpoint-wide: 1441px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.4s ease;
    
    /* Borders */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 50px;
    
    /* Touch targets (min 44x44px for mobile) */
    --touch-target-min: 44px;
}

/* ===================================
 * CSS Reset & Base Styles
 * ================================ */
* {
    box-sizing: border-box;
}

html {
    font-size: 100%;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    margin: 0;
    padding: 0;
    background: var(--color-bg-main);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    font-family: var(--font-family-base);
}

/* Mobile-first: smaller font on mobile */
@media (max-width: 767px) {
    body {
        font-size: 14px;
    }
}

h1, h2, h3, h4, h5, h6 {
    font-weight: normal;
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

h1 { font-size: 2em; }
h2 { font-size: 1.5em; }
h3 { font-size: 1.3em; }
h4 { font-size: 1.1em; }
h5 { font-size: 1em; font-weight: bold; }
h6 { font-size: 0.9em; font-weight: bold; }

p {
    margin: 0 0 var(--spacing-lg) 0;
}

/* Links */
a {
    cursor: pointer;
    color: var(--color-text-link);
    text-decoration: none;
    transition: all var(--transition-fast);
}

a:visited {
    color: var(--color-text-link-visited);
}

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

a:active {
    color: #FFFFFF;
    background: var(--color-primary-active);
}

a img {
    border: 0;
}

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

/* Code */
pre, code, tt {
    font-family: var(--font-family-code);
    font-size: 14px;
    line-height: var(--line-height-tight);
}

pre, code {
    display: block;
    overflow-x: auto;
    background: var(--color-bg-code);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius-sm);
}

code {
    margin-bottom: var(--spacing-md);
}

/* Blockquote */
blockquote {
    margin: 1.5em var(--spacing-lg);
    padding-left: var(--spacing-lg);
    color: var(--color-text-secondary);
    font-style: italic;
    border-left: 4px solid var(--color-border);
}

@media (max-width: 767px) {
    blockquote {
        margin-left: var(--spacing-md);
        margin-right: var(--spacing-md);
    }
}

blockquote:before, blockquote:after, q:before, q:after {
    content: "";
}

blockquote, q {
    quotes: "" "";
}

/* Tables */
table {
    border-collapse: collapse;
    border-spacing: 0;
    margin-bottom: 1.4em;
    width: 100%;
    overflow-x: auto;
    display: block;
}

@media (max-width: 767px) {
    table {
        font-size: var(--font-size-sm);
    }
}

caption, th, td {
    text-align: left;
    font-weight: normal;
    padding: var(--spacing-xs) var(--spacing-md) var(--spacing-xs) var(--spacing-sm);
}

th {
    font-weight: bold;
}

thead th {
    background: #c3d9ff;
}

tr.even td, tr:nth-child(even) td {
    background: #e5ecf9;
}

tfoot {
    font-style: italic;
}

caption {
    background: var(--color-border-light);
}

/* Forms */
input, textarea, button, select {
    font-family: var(--font-family-base);
    font-size: 100%;
}

input, textarea {
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
}

textarea {
    padding: var(--spacing-sm);
    resize: vertical;
}

fieldset {
    padding: 1.4em;
    margin: 0 0 1.5em 0;
    border: 1px solid #ccc;
    border-radius: var(--border-radius-sm);
}

legend {
    font-weight: bold;
    padding: 0 var(--spacing-sm);
}

/* Lists */
ul {
    list-style-type: disc;
    padding-left: var(--spacing-lg);
}

ol {
    padding-left: var(--spacing-lg);
}

/* Utility Classes */
.fleft {
    float: left;
}

.fright {
    float: right;
}

.clearfix:after {
    content: "";
    display: table;
    clear: both;
}

.aligncenter, div.aligncenter {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.alignleft {
    float: left;
}

.alignright {
    float: right;
}

img.alignleft {
    margin: var(--spacing-xs) var(--spacing-md) 0 0;
}

img.alignright {
    margin: var(--spacing-xs) 0 0 var(--spacing-md);
}

@media (max-width: 767px) {
    .alignleft, .alignright, img.alignleft, img.alignright {
        float: none;
        display: block;
        margin: var(--spacing-md) auto;
    }
}

/* ===================================
 * Layout - Responsive Grid System
 * ================================ */

/* Container */
.container_16 {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

@media (max-width: 767px) {
    .container_16 {
        padding: 0 var(--spacing-md);
    }
}

/* Grid System - Flexbox based */
.grid_10, .grid_4, .grid_14 {
    width: 100%;
    padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
    main.container_16 {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
    }
    
    .grid_10 {
        width: calc(var(--content-width) - var(--spacing-md));
        flex: 0 0 auto;
    }
    
    .grid_4 {
        width: calc(var(--sidebar-width));
        flex: 0 0 auto;
    }
}

@media (min-width: 1025px) {
    .grid_10 {
        width: 70%;
    }
    
    .grid_4 {
        width: 30%;
    }
}

/* High resolution displays */
@media (min-width: 1441px) {
    .container_16,
    .site-nav,
    #nav_box .bd {
        max-width: 1440px;
    }
    
    .grid_10 {
        width: 70%;
    }
    
    .grid_4 {
        width: 30%;
    }
}

/* ===================================
 * Navigation
 * ================================ */

/* Top Navigation Bar */
#nav_box {
    clear: both;
    width: 100%;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
}

@media (max-width: 767px) {
    #nav_box {
        font-size: var(--font-size-sm);
    }
}

#nav_box .bd {
    margin: 0 auto;
    max-width: var(--container-max-width);
    padding: var(--spacing-sm) var(--container-padding);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
}

.top-nav-items {
    order: 2;
}

.top-nav-items ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.top-nav-items li {
    margin: 0;
}

@media (max-width: 767px) {
    .top-nav-items ul {
        gap: var(--spacing-sm);
    }
    
    .top-nav-items li {
        font-size: var(--font-size-sm);
    }
}

.top-nav-info {
    order: 1;
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

@media (max-width: 767px) {
    #nav_box .bd {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .top-nav-info {
        width: 100%;
        justify-content: space-between;
        font-size: var(--font-size-sm);
        gap: var(--spacing-sm);
    }
    
    .top-nav-items {
        width: 100%;
    }
}

#nav_box a:link, #nav_box a:visited {
    color: var(--color-secondary);
}

#nav_box a:hover, #nav_box a:active {
    background-color: var(--color-secondary);
    color: #fff;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
}

#nav_box li.on,
#nav_box li.on a:link,
#nav_box li.on a:visited {
    color: var(--color-accent);
    font-weight: 800;
}

#nav_box li.on a:hover {
    color: #fff;
    background: var(--color-accent);
}

/* ===================================
 * Header
 * ================================ */

#header {
    margin: 0 0 var(--spacing-xl) 0;
    background: none;
    padding-bottom: var(--spacing-lg);
}

.site-nav {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    clear: both;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-md);
}

@media (max-width: 767px) {
    #header {
        margin-bottom: var(--spacing-lg);
        padding-bottom: var(--spacing-md);
    }
    
    .site-nav {
        flex-direction: column;
        align-items: stretch;
    }
}

.site-nav-logo {
    flex-shrink: 0;
}

.site-nav-logo img {
    max-width: 150px;
    height: auto;
}

@media (max-width: 767px) {
    .site-nav-logo {
        text-align: center;
        margin: 0 auto;
    }
    
    .site-nav-logo img {
        max-width: 120px;
    }
}

.site-nav-logo a:hover,
.site-nav-logo a:active,
.site-nav-logo a {
    background: transparent;
}

.site-nav-logo em {
    display: none;
}

.site-nav .bd {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    background-color: var(--color-bg-nav);
    padding: var(--spacing-md) var(--container-padding);
    border-radius: var(--border-radius-sm);
    gap: var(--spacing-md);
}

@media (max-width: 767px) {
    .site-nav .bd {
        flex-direction: column;
        width: 100%;
        padding: var(--spacing-md);
    }
}

/* Search Form */
.nav-srh {
    flex: 0 0 auto;
}

@media (max-width: 767px) {
    .nav-srh {
        width: 100%;
        order: 2;
    }
}

.nav-srh form {
    display: flex;
    gap: var(--spacing-sm);
}

.nav-srh .inp {
    display: flex;
    gap: var(--spacing-sm);
    flex: 1;
}

.nav-srh input[type="text"] {
    flex: 1;
    min-width: 0;
    height: 36px;
    line-height: 1.5;
    border: 1px solid #a6d098;
    background: #fff;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
}

@media (max-width: 767px) {
    .nav-srh input[type="text"] {
        width: 100%;
    }
}

.nav-srh .bn-srh {
    min-width: 60px;
    height: 36px;
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: var(--color-primary);
    color: #fff;
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    transition: background var(--transition-fast);
}

.nav-srh .bn-srh:hover {
    background: var(--color-primary-hover);
}

.nav-srh .bn-srh:active {
    background: var(--color-primary-active);
}

/* Site Navigation Items */
.site-nav-items {
    flex: 1;
}

@media (max-width: 767px) {
    .site-nav-items {
        width: 100%;
        order: 1;
    }
}

.site-nav-items ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

@media (max-width: 767px) {
    .site-nav-items ul {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

.site-nav-items li {
    margin: 0;
}

.site-nav-items li a {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    display: inline-block;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    min-height: var(--touch-target-min);
    line-height: calc(var(--touch-target-min) - 8px);
}

@media (max-width: 767px) {
    .site-nav-items li a {
        display: block;
        width: 100%;
        text-align: center;
    }
}

.site-nav-items li a:hover {
    background-color: var(--color-primary);
    color: #fff;
}

/* ===================================
 * Content Area
 * ================================ */

#content {
    overflow: hidden;
}

#content p {
    margin-bottom: var(--spacing-lg);
}

/* Post/Article */
.post, article.post {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-bg-light);
    width: 100%;
}

.post img {
    max-width: 100%;
    margin: var(--spacing-md) auto;
    display: block;
}

@media (min-width: 768px) {
    .post img {
        max-width: 80%;
    }
}

h2.entry_title {
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: bold;
    font-family: var(--font-family-heading);
}

@media (max-width: 767px) {
    h2.entry_title {
        font-size: 1.3em;
    }
}

h2.entry_title a {
    border: none;
}

.post h3 {
    font-size: 1.13em;
    font-weight: bold;
}

.post h4 {
    font-size: 1.07em;
    font-weight: bold;
}

.post h5 {
    font-size: 1em;
    font-weight: bold;
}

.post h6 {
    font-size: 0.87em;
    font-weight: bold;
}

.entry_data {
    color: #000;
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-md);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

@media (max-width: 767px) {
    .entry_data {
        font-size: var(--font-size-sm);
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}

.entry_data span {
    padding-right: var(--spacing-sm);
    border-right: 1px solid var(--color-border-light);
}

@media (max-width: 767px) {
    .entry_data span {
        border-right: none;
        border-bottom: 1px solid var(--color-border-light);
        padding-bottom: var(--spacing-xs);
    }
    
    .entry_data span:last-child {
        border-bottom: none;
    }
}

/* Pagination */
ol.page-navigator {
    margin: var(--spacing-lg) 0 0 0;
    padding: 0;
    color: var(--color-text-secondary);
    list-style: none;
    font-size: var(--font-size-base);
    font-family: var(--font-family-heading);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

@media (max-width: 767px) {
    ol.page-navigator {
        justify-content: center;
    }
}

ol.page-navigator li {
    margin: 0;
    display: inline-block;
}

ol.page-navigator li a {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border-light);
    text-decoration: none;
    display: inline-block;
    border-radius: var(--border-radius-sm);
    min-width: var(--touch-target-min);
    min-height: var(--touch-target-min);
    line-height: calc(var(--touch-target-min) - 16px);
    text-align: center;
    transition: all var(--transition-fast);
}

ol.page-navigator li.current a {
    background: #3354AA;
    border-color: #3354AA;
    color: #fff;
}

ol.page-navigator li a:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: #fff;
}

/* ===================================
 * Comments Section
 * ================================ */

#comments, .comments-area {
    margin-top: var(--spacing-lg);
}

#comments h4 {
    font-size: var(--font-size-base);
    font-weight: bold;
    margin-bottom: var(--spacing-md);
}

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

ol.comment-list ol {
    padding-top: var(--spacing-md);
    margin-left: var(--spacing-lg);
}

@media (max-width: 767px) {
    ol.comment-list ol {
        margin-left: var(--spacing-md);
    }
}

ol.comment-list li {
    margin: 0;
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    border: 1px solid var(--color-border-light);
    background: var(--color-comment-even);
    overflow: hidden;
    border-radius: var(--border-radius-sm);
}

ol.comment-list li.comment-level-odd {
    background: var(--color-comment-odd);
}

ol.comment-list li.comment-level-even {
    background: var(--color-comment-even);
}

ol.comment-list li.comment-by-author {
    border: 1px dashed #AAA;
}

ol.comment-list li .comment-reply {
    text-align: right;
    margin-top: var(--spacing-md);
}

ol.comment-list li .comment-reply a {
    font-size: var(--font-size-sm);
    border: none;
    color: #aaa;
    padding: var(--spacing-xs) var(--spacing-md);
    display: inline-block;
    min-height: var(--touch-target-min);
    line-height: calc(var(--touch-target-min) - 8px);
}

ol.comment-list li .comment-reply a:hover {
    color: var(--color-text-primary);
    background: var(--color-border-light);
}

.comment-meta {
    padding-bottom: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.comment-author {
    display: block;
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.comment-author cite.fn {
    font-style: normal;
}

.comment-body {
    overflow: hidden;
}

img.avatar {
    float: left;
    margin: var(--spacing-sm) var(--spacing-md) 0 0;
    border-radius: 50%;
}

@media (max-width: 767px) {
    img.avatar {
        width: 40px;
        height: 40px;
        margin-right: var(--spacing-sm);
    }
}

/* Comment Form */
.respond {
    margin-top: var(--spacing-lg);
}

ol.comment-list li .respond {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
}

#comment_form {
    padding-right: var(--spacing-sm);
}

@media (max-width: 767px) {
    #comment_form {
        padding-right: 0;
    }
}

.respond .cancel-comment-reply {
    float: right;
    font-size: var(--font-size-base);
}

.respond .cancel-comment-reply a {
    border: none;
    color: #aaa;
    padding: var(--spacing-xs) var(--spacing-md);
}

.respond .cancel-comment-reply a:hover {
    color: var(--color-text-primary);
}

#comment_form label {
    font-size: var(--font-size-base);
    color: #555;
    display: block;
    font-weight: bold;
    margin-bottom: var(--spacing-xs);
}

#comment_form label .required {
    color: var(--color-danger);
    padding-left: var(--spacing-sm);
    font-size: var(--font-size-base);
}

#comment_form .text {
    width: 100%;
    margin-bottom: var(--spacing-md);
}

#comment_form textarea {
    width: 100%;
    min-height: 180px;
    margin-bottom: var(--spacing-md);
}

#comment_form .submit {
    background: var(--color-primary);
    color: #fff;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    min-height: var(--touch-target-min);
    transition: background var(--transition-fast);
}

#comment_form .submit:hover {
    background: var(--color-primary-hover);
}

#comment_form .submit:active {
    background: var(--color-primary-active);
}

@media (max-width: 767px) {
    #comment_form .submit {
        width: 100%;
    }
}

/* ===================================
 * Sidebar
 * ================================ */

#sidebar, aside#sidebar {
    overflow: hidden;
}

@media (max-width: 767px) {
    #sidebar, aside#sidebar {
        margin-top: var(--spacing-xl);
        padding-left: 0;
        padding-right: 0;
    }
}

.widget {
    margin: 0 0 var(--spacing-lg) 0;
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    border-radius: var(--border-radius-sm);
}

@media (min-width: 768px) {
    .widget {
        margin-left: var(--spacing-lg);
    }
}

.widget h3 {
    color: var(--color-success);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

.widget ul {
    margin: 0;
    padding: 0;
    list-style-type: none;
}

.widget ul li {
    margin: 0;
    padding: var(--spacing-xs) 0;
    line-height: 1.8;
    border-bottom: 1px solid var(--color-border-light);
}

.widget ul li:last-child {
    border-bottom: none;
}

.widget ul li a {
    display: block;
    padding: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.widget ul li a:hover {
    padding-left: var(--spacing-md);
    background: rgba(12, 120, 35, 0.05);
}

/* ===================================
 * Footer
 * ================================ */

#footer, footer#footer {
    color: var(--color-text-muted);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-xl);
    overflow: auto;
    border-top: 1px dashed var(--color-border);
    padding-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
}

@media (max-width: 767px) {
    #footer, footer#footer {
        text-align: center;
    }
    
    #footer .fleft,
    #footer .fright,
    footer#footer .fleft,
    footer#footer .fright {
        float: none;
        display: block;
        margin: var(--spacing-sm) 0;
    }
}

/* ===================================
 * Reward Button (打赏功能)
 * ================================ */

#content_tips {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md);
    background: #fff9e6;
    border-left: 4px solid #FFB800;
    border-radius: var(--border-radius-sm);
}

#content_tips p {
    margin: 0;
}

#rewardButton {
    background-color: #f05050;
    color: white;
    border: none;
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    line-height: 36px;
    text-align: center;
    height: 36px;
    display: block;
    margin: var(--spacing-lg) auto;
    padding: 0 var(--spacing-lg);
    font-size: var(--font-size-base);
    transition: all var(--transition-slow);
    min-height: var(--touch-target-min);
    box-shadow: 0 2px 8px rgba(240, 80, 80, 0.3);
}

#rewardButton:hover {
    background-color: #d43f3f;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(240, 80, 80, 0.4);
}

#rewardButton:active {
    transform: translateY(0);
}

#QR {
    padding-top: var(--spacing-lg);
    text-align: center;
}

#QR a {
    border: 0;
}

#QR img {
    width: 180px;
    max-width: 100%;
    display: inline-block;
    margin: var(--spacing-md) var(--spacing-lg) 0 var(--spacing-lg);
    border-radius: var(--border-radius-sm);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

@media (max-width: 767px) {
    #QR img {
        width: 140px;
        margin: var(--spacing-md) var(--spacing-sm) 0 var(--spacing-sm);
    }
}

#wechat, #alipay {
    display: inline-block;
    margin: var(--spacing-md);
}

@media (max-width: 767px) {
    #wechat, #alipay {
        display: block;
        margin: var(--spacing-md) auto;
    }
}

/* ===================================
 * Tags
 * ================================ */

.tags, p.tags {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px dashed var(--color-border);
}

.tags a {
    display: inline-block;
    margin: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-bg-light);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

.tags a:hover {
    background: var(--color-primary);
    color: #fff;
}

/* ===================================
 * Print Styles
 * ================================ */

@media print {
    * {
        background: transparent !important;
        color: #000 !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }
    
    a, a:visited {
        text-decoration: underline;
    }
    
    a[href]:after {
        content: " (" attr(href) ")";
    }
    
    abbr[title]:after {
        content: " (" attr(title) ")";
    }
    
    #nav_box, #header, #sidebar, #footer, .nav-srh, .respond {
        display: none;
    }
    
    .post, article.post {
        page-break-inside: avoid;
    }
}

/* ===================================
 * Accessibility Improvements
 * ================================ */

/* Focus styles for keyboard navigation */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Skip to content link */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-sm);
    z-index: 100;
}

.skip-to-content:focus {
    top: 0;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ===================================
 * Dark Mode Support (Optional)
 * ================================ */

@media (prefers-color-scheme: dark) {
    /* Uncomment to enable dark mode
    :root {
        --color-bg-main: #1a1a1a;
        --color-bg-nav: #2a4a2a;
        --color-bg-light: #2a2a2a;
        --color-bg-code: #2d2d2d;
        --color-text-primary: #e0e0e0;
        --color-text-secondary: #b0b0b0;
        --color-text-muted: #888;
        --color-border: #444;
        --color-border-light: #333;
        --color-comment-odd: #222;
        --color-comment-even: #2a2a2a;
    }
    */
}