/**
 * Nebula Theme - Main Styles
 * Version: 2.0.0
 * Requires: variables.css, base.css
 */

/* ============================
   [design-spec] Article Card Hover Effects
   ============================ */

.ds-article-card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.ds-article-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* ============================
   [design-spec] Header - 导航栏
   ============================ */

.ds-header {
    height: var(--ds-nav-height);
    background-color: var(--ds-bg-primary);
    border-bottom: none;
    position: sticky;
    top: 0;
    z-index: var(--ds-z-sticky);
    box-shadow: 0 1px 0 var(--ds-border, #eee);
    transition: box-shadow 0.3s ease;
    display: flex;
    align-items: center;
}

/* 滚动时增强阴影 */
.ds-header.scrolled {
    box-shadow: var(--ds-shadow-md);
}

[data-theme="dark"] .ds-header.scrolled {
    box-shadow: var(--ds-shadow-lg);
}

.ds-header .container {
    max-width: 100%;
    padding-left: 0;
    padding-right: 0;
}

.ds-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0;
    box-sizing: border-box;
}

.ds-header__logo {
    display: flex;
    align-items: center;
    gap: var(--ds-space-2);
}

.ds-header__logo img {
    height: var(--ds-logo-height);
    width: auto;
    display: block;
}

/* Logo显隐控制 */
.ds-header__logo-dark {
    display: none !important;
}

[data-theme="dark"] .ds-header__logo-light {
    display: none !important;
}

[data-theme="dark"] .ds-header__logo-dark {
    display: inline-block !important;
}

body.dark-mode .ds-header__logo-light {
    display: none !important;
}

body.dark-mode .ds-header__logo-dark {
    display: inline-block !important;
}

.ds-header__logo-text {
    font-size: var(--ds-logo-font-size);
    font-weight: var(--ds-font-bold);
    color: var(--ds-brand);
}

.ds-header__nav {
    display: flex;
    align-items: center;
    gap: var(--ds-actions-gap);
}

.ds-header__menu {
    display: flex;
    gap: var(--ds-spacing-4);
}

.ds-header__menu-item {
    color: var(--ds-text-secondary);
    font-weight: var(--ds-font-medium);
    transition: color var(--ds-transition) var(--ds-ease);
}

.ds-header__menu-item:hover,
.ds-header__menu-item.current {
    color: var(--ds-primary);
}

/* 主导航菜单 */
.ds-header__main-nav {
    display: flex;
    align-items: center;
    flex: 1;
    justify-content: center;
    padding: 0 var(--ds-spacing-6);
}

.ds-header__menu-list {
    display: flex;
    align-items: center;
    gap: var(--ds-spacing-5);
    list-style: none;
    margin: 0;
    padding: 0;
}

.ds-header__menu-list .menu-item {
    position: relative;
}

.ds-header__menu-list .menu-item a {
    color: var(--ds-text-secondary);
    font-weight: var(--ds-font-medium);
    font-size: var(--ds-text-sm);
    padding: var(--ds-space-2) var(--ds-spacing-3);
    border-radius: var(--ds-radius-md);
    transition: all var(--ds-transition) var(--ds-ease);
    display: block;
}

.ds-header__menu-list .menu-item a:hover {
    color: var(--ds-primary);
    background-color: var(--ds-bg-hover);
}

/* 搜索框 */
.ds-header__search {
    display: flex;
    align-items: center;
    margin-right: var(--ds-spacing-4);
}

.ds-header__search form {
    display: flex;
    align-items: center;
    background-color: var(--ds-bg-secondary);
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-lg);
    padding: 2px 4px;
    transition: all var(--ds-transition) var(--ds-ease);
}

.ds-header__search form:focus-within {
    border-color: var(--ds-primary);
    box-shadow: 0 0 0 2px var(--ds-primary-light);
}

.ds-header__search-input {
    border: none;
    background: transparent;
    padding: var(--ds-space-2) var(--ds-spacing-3);
    font-size: var(--ds-text-sm);
    color: var(--ds-text-primary);
    width: 160px;
    outline: none;
}

.ds-header__search-input::placeholder {
    color: var(--ds-text-tertiary);
}

.ds-header__search-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    padding: var(--ds-space-2);
    color: var(--ds-text-secondary);
    cursor: pointer;
    border-radius: var(--ds-radius-md);
    transition: all var(--ds-transition) var(--ds-ease);
}

.ds-header__search-btn:hover {
    color: var(--ds-primary);
    background-color: var(--ds-bg-hover);
}

/* 右侧区域 */
.ds-header__right {
    display: flex;
    align-items: center;
    gap: var(--ds-spacing-2);
}

/* 用户头像区域 - 只显示头像 */
.ds-user-menu {
    display: flex;
    align-items: center;
}

/* 未登录状态 - 扁平头像图标 */
.ds-user-menu--guest {
    display: flex;
    align-items: center;
}

.ds-user-menu__avatar-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 50%;
    color: var(--ds-text-secondary, #666);
    cursor: pointer;
    transition: color 0.2s ease, background-color 0.2s ease;
}

.ds-user-menu__avatar-btn:hover {
    color: var(--ds-primary, #0066cc);
    background-color: var(--ds-bg-hover, #f5f5f5);
}

/* 已登录状态 - 只显示头像 */
.ds-user-menu--member {
    position: relative;
}

.ds-user-menu__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--ds-radius-full);
    cursor: pointer;
    transition: background-color var(--ds-transition) var(--ds-ease);
}

.ds-user-menu__toggle:hover {
    background-color: var(--ds-bg-hover);
}

.ds-user-menu__avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--ds-border);
    transition: border-color var(--ds-transition) var(--ds-ease);
}

.ds-user-menu__toggle:hover .ds-user-menu__avatar {
    border-color: var(--ds-primary);
}

/* 下拉菜单 */
.ds-user-menu__dropdown {
    margin-top: 8px;
    min-width: 160px;
    padding: 8px 0;
    border-radius: var(--ds-radius-md);
    box-shadow: var(--ds-shadow-lg);
}

.ds-user-menu__dropdown .dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    font-size: 14px;
    color: var(--ds-text-primary);
    transition: background-color var(--ds-transition) var(--ds-ease);
}

.ds-user-menu__dropdown .dropdown-item:hover {
    background-color: var(--ds-bg-hover);
    color: var(--ds-primary);
}

/* 汉堡菜单 */
.ds-header__hamburger {
    display: none;
}

/* 响应式Header */
@media (max-width: 1024px) {
    .ds-header__main-nav {
        display: none;  /* 平板端隐藏主菜单，用汉堡菜单 */
    }
    
    .ds-header__search-input {
        width: 140px;
    }
}

@media (max-width: 768px) {
    .ds-header {
        height: 56px;  /* 移动端Header更矮 */
    }
    
    .ds-header__search {
        margin-right: var(--ds-spacing-1);
    }
    
    .ds-header__search form {
        padding: 2px;
    }
    
    .ds-header__search-input {
        width: 90px;
        padding: var(--ds-space-1) var(--ds-space-2);
        font-size: var(--ds-text-xs);
        border-radius: 20px;
    }
    
    .ds-header__search-btn {
        padding: var(--ds-space-1);
    }
    
    .ds-header__search-btn svg {
        width: 14px;
        height: 14px;
    }
    
    .ds-header__hamburger {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: transparent;
        border: none;
        cursor: pointer;
    }
}

@media (max-width: 375px) {
    /* 超小屏：搜索框隐藏为纯图标 */
    .ds-header__search-input {
        display: none;
    }
    
    .ds-header__search form {
        background: transparent;
        padding: 0;
    }
    
    .ds-header__search-btn {
        background: transparent;
    }
}

/* ============================
   [design-spec] Hero Section
   ============================ */

.ds-hero {
    background: linear-gradient(135deg, var(--ds-brand) 0%, var(--ds-primary) 100%);
    padding: var(--ds-spacing-16) 0;
    min-height: 480px;
    display: flex;
    align-items: center;
    color: var(--ds-text-inverse);
}

.ds-hero__container {
    width: 100%;
}

.ds-hero__content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.ds-hero__title {
    font-size: var(--ds-text-5xl);
    font-weight: var(--ds-font-bold);
    margin-bottom: var(--ds-spacing-4);
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.ds-hero__subtitle {
    font-size: var(--ds-text-lg);
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto var(--ds-spacing-8);
}

.ds-hero__search {
    display: flex;
    max-width: 600px;
    margin: 0 auto;
    background: rgba(255,255,255,0.95);
    border-radius: var(--ds-radius-xl);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.ds-hero__search input {
    flex: 1;
    padding: var(--ds-spacing-4) var(--ds-spacing-6);
    border: none;
    background: transparent;
    font-size: var(--ds-text-base);
    color: var(--ds-text-primary);
}

.ds-hero__search input::placeholder {
    color: var(--ds-gray-500);
}

.ds-hero__search input:focus {
    outline: none;
}

.ds-hero__search button {
    padding: var(--ds-spacing-4) var(--ds-spacing-6);
    background: var(--ds-primary);
    border: none;
    color: white;
    cursor: pointer;
    transition: background var(--ds-transition);
}

.ds-hero__search button:hover {
    background: var(--ds-primary-dark);
}

/* 响应式 */
@media (max-width: 768px) {
    .ds-hero {
        min-height: 400px;
        padding: var(--ds-spacing-8) 0;
    }
    .ds-hero__title {
        font-size: var(--ds-text-4xl);
    }
    .ds-hero__search {
        flex-direction: column;
        border-radius: var(--ds-radius-lg);
    }
    .ds-hero__search input {
        padding: var(--ds-spacing-3) var(--ds-spacing-4);
    }
    .ds-hero__search button {
        padding: var(--ds-spacing-3);
    }
}

/* ============================
   Hero Section v3 - 深水涟漪设计
   ============================ */

/* ---- 布局 ---- */
.ds-hero-v3 {
    position: relative;
    width: 100%;
    min-height: 520px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    /* 渐变背景基础 */
    background: linear-gradient(
        135deg,
        var(--ds-brand, #065A82) 0%,
        var(--ds-primary, #0EA5E9) 50%,
        var(--ds-secondary, #38BDF8) 100%
    );
    padding: var(--ds-spacing-16, 64px) var(--ds-page-padding, 40px);
}

/* ---- 背景动画层 ---- */
.ds-hero-v3__bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

/* 网格线动画 */
.ds-hero-v3__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0%   { transform: translate(0, 0); }
    100% { transform: translate(60px, 60px); }
}

/* 光晕动画 */
.ds-hero-v3__glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: glowPulse 6s ease-in-out infinite;
}

.ds-hero-v3__glow--1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(14,165,233,0.6) 0%, transparent 70%);
    top: -100px;
    right: 10%;
    animation-delay: 0s;
}

.ds-hero-v3__glow--2 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(56,189,248,0.5) 0%, transparent 70%);
    bottom: -50px;
    left: 5%;
    animation-delay: -3s;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50%       { opacity: 0.5; transform: scale(1.1); }
}

/* 水波纹动画 */
.ds-hero-v3__wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to top, rgba(255,255,255,0.08), transparent);
    border-radius: 50% 50% 0 0;
    animation: wave 8s ease-in-out infinite;
}

.ds-hero-v3__wave--2 {
    height: 80px;
    opacity: 0.5;
    animation-delay: -4s;
    animation-duration: 10s;
}

@keyframes wave {
    0%, 100% { transform: translateY(0) scaleX(1); }
    50%       { transform: translateY(-15px) scaleX(1.02); }
}

/* ---- 内容层 ---- */
.ds-hero-v3__content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--ds-spacing-6, 24px);
    width: 100%;
    max-width: 800px;
    text-align: center;
}

/* ---- 品牌区 ---- */
.ds-hero-v3__brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--ds-spacing-3, 12px);
    animation: fadeInUp 0.8s ease-out;
}

.ds-hero-v3__title {
    font-size: var(--ds-text-5xl, 48px);
    font-weight: var(--ds-font-bold, 700);
    color: #ffffff;
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--ds-space-3, 12px);
    text-shadow: 0 2px 20px rgba(0,0,0,0.15);
    letter-spacing: -0.02em;
}

.ds-hero-v3__title-icon {
    font-size: 0.9em;
    filter: drop-shadow(0 2px 8px rgba(0,0,0,0.2));
}

/* 打字机效果 Slogan */
.ds-hero-v3__slogan {
    font-size: var(--ds-text-xl, 20px);
    color: rgba(255,255,255,0.95);
    margin: 0;
    font-weight: 500;
    min-height: 1.5em;
}

.ds-hero-v3__slogan-text {
    display: inline;
}

.ds-hero-v3__cursor {
    display: inline-block;
    color: var(--ds-accent, #F59E0B);
    animation: blink 1s step-end infinite;
    margin-left: 2px;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0; }
}

.ds-hero-v3__desc {
    font-size: var(--ds-text-base, 16px);
    color: rgba(255,255,255,0.75);
    margin: 0;
    max-width: 480px;
    line-height: 1.6;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

/* ---- 搜索区 ---- */
.ds-hero-v3__search-wrap {
    width: 100%;
    max-width: 640px;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.ds-hero-v3__search {
    width: 100%;
}

.ds-hero-v3__search-inner {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.95);
    border-radius: 28px;
    padding: 6px 6px 6px 20px;
    box-shadow:
        0 4px 20px rgba(0,0,0,0.15),
        0 0 0 1px rgba(255,255,255,0.2) inset;
    transition: box-shadow 0.3s ease, transform 0.2s ease;
}

.ds-hero-v3__search-inner:focus-within {
    box-shadow:
        0 4px 30px rgba(14,165,233,0.3),
        0 0 0 2px var(--ds-primary, #0EA5E9);
    transform: translateY(-1px);
}

.ds-hero-v3__search-icon {
    color: var(--ds-primary, #065A82);
    opacity: 0.6;
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.ds-hero-v3__search-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 12px 16px;
    font-size: var(--ds-text-base, 16px);
    color: var(--ds-text-primary, #1E293B);
    min-width: 0;
}

.ds-hero-v3__search-input::placeholder {
    color: #94A3B8;
}

.ds-hero-v3__search-input:focus {
    outline: none;
}

.ds-hero-v3__search-btn {
    flex-shrink: 0;
    background: linear-gradient(
        135deg,
        var(--ds-primary, #065A82) 0%,
        var(--ds-secondary, #0EA5E9) 100%
    );
    color: #ffffff;
    border: none;
    border-radius: 22px;
    padding: 12px 28px;
    font-size: var(--ds-text-base, 16px);
    font-weight: var(--ds-font-semibold, 600);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    white-space: nowrap;
}

.ds-hero-v3__search-btn:hover {
    transform: scale(1.03);
    box-shadow: 0 4px 15px rgba(6,90,130,0.4);
}

.ds-hero-v3__search-btn:active {
    transform: scale(0.98);
}

/* ---- 数据统计 ---- */
.ds-hero-v3__stats {
    display: flex;
    align-items: center;
    gap: var(--ds-spacing-6, 24px);
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.ds-hero-v3__stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.ds-hero-v3__stat-num {
    font-size: var(--ds-text-2xl, 24px);
    font-weight: var(--ds-font-bold, 700);
    color: #ffffff;
    line-height: 1.2;
}

.ds-hero-v3__stat-plus {
    font-size: 0.7em;
    color: var(--ds-accent, #F59E0B);
}

.ds-hero-v3__stat-label {
    font-size: var(--ds-text-xs, 12px);
    color: rgba(255,255,255,0.7);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.ds-hero-v3__stat-divider {
    width: 1px;
    height: 36px;
    background: rgba(255,255,255,0.25);
}

/* ---- 快捷标签 ---- */
.ds-hero-v3__tags {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--ds-space-2, 8px);
    justify-content: center;
    animation: fadeInUp 0.8s ease-out 0.8s both;
}

.ds-hero-v3__tags-label {
    font-size: var(--ds-text-sm, 14px);
    color: rgba(255,255,255,0.6);
}

.ds-hero-v3__tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 9999px;
    font-size: var(--ds-text-sm, 14px);
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
    backdrop-filter: blur(4px);
}

.ds-hero-v3__tag:hover {
    background: rgba(255,255,255,0.22);
    border-color: rgba(255,255,255,0.4);
    transform: translateY(-1px);
}

/* ---- 动画关键帧 ---- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================
   Hero v3 Responsive
   ============================ */

/* ---- 平板端 768px - 1024px ---- */
@media (max-width: 1024px) {
    .ds-hero-v3 {
        min-height: 460px;
        padding: var(--ds-spacing-12, 48px) var(--ds-spacing-6, 24px);
    }

    .ds-hero-v3__title {
        font-size: 40px;
    }

    .ds-hero-v3__slogan {
        font-size: 18px;
    }

    .ds-hero-v3__stats {
        gap: var(--ds-spacing-4, 16px);
    }

    .ds-hero-v3__stat-num {
        font-size: 20px;
    }

    .ds-hero-v3__glow--1 {
        width: 300px;
        height: 300px;
    }
}

/* ---- 移动端 < 768px ---- */
@media (max-width: 768px) {
    .ds-hero-v3 {
        min-height: 400px;
        padding: var(--ds-spacing-8, 32px) var(--ds-spacing-4, 16px);
    }

    .ds-hero-v3__title {
        font-size: 32px;
        gap: var(--ds-space-2, 8px);
    }

    .ds-hero-v3__slogan {
        font-size: 16px;
    }

    .ds-hero-v3__desc {
        font-size: 14px;
        max-width: 320px;
    }

    /* 搜索框：保持胶囊形状，缩小按钮 */
    .ds-hero-v3__search-inner {
        padding: 5px 5px 5px 16px;
        border-radius: 24px;
    }

    .ds-hero-v3__search-input {
        padding: 10px 12px;
        font-size: 15px;
    }

    .ds-hero-v3__search-btn {
        padding: 10px 20px;
        font-size: 14px;
        border-radius: 18px;
    }

    /* 统计数据：竖向排列 */
    .ds-hero-v3__stats {
        gap: var(--ds-spacing-3, 12px);
    }

    .ds-hero-v3__stat {
        gap: 0;
    }

    .ds-hero-v3__stat-num {
        font-size: 18px;
    }

    .ds-hero-v3__stat-divider {
        height: 28px;
    }

    /* 快捷标签：单行滚动 */
    .ds-hero-v3__tags {
        gap: var(--ds-space-1, 4px);
    }

    .ds-hero-v3__tag {
        padding: 3px 10px;
        font-size: 12px;
    }

    .ds-hero-v3__glow--1 {
        width: 200px;
        height: 200px;
        top: -50px;
    }

    .ds-hero-v3__glow--2 {
        width: 180px;
        height: 180px;
    }

    .ds-hero-v3__wave {
        height: 80px;
    }
}

/* ---- 超小屏幕 < 375px ---- */
@media (max-width: 375px) {
    .ds-hero-v3 {
        min-height: 360px;
        padding: var(--ds-spacing-6, 24px) var(--ds-spacing-3, 12px);
    }

    .ds-hero-v3__title {
        font-size: 28px;
    }

    .ds-hero-v3__search-btn {
        padding: 10px 16px;
    }

    .ds-hero-v3__stats {
        gap: var(--ds-spacing-2, 8px);
    }

    .ds-hero-v3__stat-num {
        font-size: 16px;
    }

    .ds-hero-v3__stat-divider {
        height: 24px;
    }
}

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

.ds-content {
    display: grid;
    grid-template-columns: 3fr 1fr;
    gap: var(--ds-spacing-8);
    padding: var(--ds-spacing-8) 0;
}

.ds-content--no-sidebar {
    grid-template-columns: 1fr;
}

.ds-main {
    min-width: 0;
}

.ds-sidebar {
    min-width: var(--ds-sidebar-width);
}

/* ============================
   Post Card - Multi Layout
   ============================ */

/* 列表布局 */
.ds-post-list--list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.ds-post-list--list .ds-post-card {
    display: flex;
    flex-direction: row;
    gap: 0;
    padding: 0;
}

.ds-post-list--list .ds-post-card__thumbnail {
    flex-shrink: 0;
    width: 280px;
    height: 180px;
    border-radius: 8px 0 0 8px;
}

.ds-post-list--list .ds-post-card__thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.ds-post-list--list .ds-post-card:hover .ds-post-card__thumbnail img {
    transform: scale(1.05);
}

.ds-post-list--list .ds-post-card__content {
    padding: 20px 24px;
}

/* 网格布局 */
.ds-post-list--grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.ds-post-list--cols-1.ds-post-list--grid {
    grid-template-columns: 1fr;
}

.ds-post-list--cols-3.ds-post-list--grid {
    grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 992px) {
    .ds-post-list--grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .ds-post-list--cols-3.ds-post-list--grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .ds-post-list--grid {
        grid-template-columns: 1fr;
    }
}

.ds-post-list--grid .ds-post-card {
    flex-direction: column;
    padding: 0;
}

.ds-post-list--grid .ds-post-card__thumbnail {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 8px 8px 0 0;
}

.ds-post-list--grid .ds-post-card__content {
    padding: 16px;
}

/* 杂志布局 */
.ds-post-list--magazine {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.ds-post-list--magazine .ds-post-card--featured {
    grid-column: span 2;
    display: flex;
    flex-direction: row;
}

.ds-post-list--magazine .ds-post-card--featured .ds-post-card__thumbnail {
    width: 400px;
    aspect-ratio: 16 / 9;
    flex-shrink: 0;
}

.ds-post-list--magazine .ds-post-card--featured .ds-post-card__content {
    padding: 24px 32px;
}

.ds-post-list--magazine .ds-post-card--featured .ds-post-card__title {
    font-size: 24px;
}

.ds-post-list--magazine .ds-post-card:not(.ds-post-card--featured) {
    flex-direction: column;
    padding: 0;
}

.ds-post-list--magazine .ds-post-card:not(.ds-post-card--featured) .ds-post-card__thumbnail {
    width: 100%;
    aspect-ratio: 16 / 9;
}

/* [design-spec] 文章卡片 - 移动端左图右文布局 */
@media (max-width: 768px) {
    .ds-post-list--magazine {
        grid-template-columns: 1fr;
    }
    .ds-post-list--magazine .ds-post-card--featured {
        grid-column: span 1;
        flex-direction: row !important;
    }
    .ds-post-list--magazine .ds-post-card--featured .ds-post-card__thumbnail {
        width: 120px !important;
        min-width: 120px !important;
        aspect-ratio: 16 / 9 !important;
        border-radius: 8px 0 0 8px !important;
    }
    
    /* [design-spec] 移动端左图右文布局（保留盟主要求） */
    
    /* List layout: 改为左图右文 */
    .ds-post-list--list .ds-post-card {
        flex-direction: row !important;
    }
    
    .ds-post-list--list .ds-post-card__thumbnail {
        width: 120px !important;
        min-width: 120px !important;
        aspect-ratio: 16 / 9 !important;
        border-radius: 8px 0 0 8px !important;
        flex-shrink: 0 !important;
    }
    
    .ds-post-list--list .ds-post-card__content {
        width: 100% !important;
        padding: 8px 12px !important;
    }
    
    /* Grid layout: 改为左图右文 */
    .ds-post-list--grid .ds-post-card {
        flex-direction: row !important;
    }
    
    .ds-post-list--grid .ds-post-card__thumbnail {
        width: 120px !important;
        min-width: 120px !important;
        aspect-ratio: 16 / 9 !important;
        border-radius: 8px 0 0 8px !important;
    }
    
    .ds-post-list--grid .ds-post-card__content {
        padding: 8px 12px !important;
    }
    
    /* Magazine (non-featured): 左图右文 */
    .ds-post-list--magazine .ds-post-card:not(.ds-post-card--featured) {
        flex-direction: row !important;
    }
    
    .ds-post-list--magazine .ds-post-card:not(.ds-post-card--featured) .ds-post-card__thumbnail {
        width: 120px !important;
        min-width: 120px !important;
        aspect-ratio: 16 / 9 !important;
        border-radius: 8px 0 0 8px !important;
    }
    
    /* [design-spec] 标题限制2行 */
    .ds-post-card__title {
        -webkit-line-clamp: 2 !important;
        white-space: nowrap !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
    }
    
    /* [design-spec] 移动端隐藏标签 */
    .ds-post-card__tags {
        display: none !important;
    }
    
    /* [design-spec] 元信息简化 */
    .ds-post-card__meta {
        font-size: 12px !important;
        color: #999 !important;
    }
    
    /* 暗黑模式适配 */
    [data-theme="dark"] .ds-post-card,
    [data-theme="dark"] .ds-post-card--default,
    [data-theme="dark"] .ds-post-card--modern {
        background: var(--ds-bg-card, #1f2937) !important;
    }
}

/* 卡片样式变体 */
.ds-post-card--default {
    background: #fff;
    border: 1px solid var(--ds-border);
    border-radius: 8px;
}

.ds-post-card--modern {
    background: #fff;
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.ds-post-card--modern:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 102, 204, 0.2);
}

.ds-post-card--minimal {
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--ds-border);
    border-radius: 0;
    padding-bottom: 24px;
}
.ds-post-card--minimal:last-child {
    border-bottom: none;
}
.ds-post-card--minimal .ds-post-card__thumbnail {
    display: none;
}

/* 默认(post-card)样式 */
.ds-post-card {
    background-color: var(--ds-bg-card);
    border-radius: var(--ds-radius-lg);
    border: 1px solid var(--ds-border);
    overflow: hidden;
    transition: all var(--ds-transition) var(--ds-ease);
}

.ds-post-card:hover {
    border-color: var(--ds-primary);
    box-shadow: var(--ds-shadow-lg);
    transform: translateY(-4px);
}

.ds-post-card__thumbnail {
    flex-shrink: 0;
    width: 200px;
    aspect-ratio: 16 / 9;
    border-radius: var(--ds-radius-md);
    overflow: hidden;
}

.ds-post-card__thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 原创/转载标签 */
.ds-post-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
    margin-right: 8px;
}

.ds-post-badge--original {
    background: rgba(0, 102, 204, 0.1);
    color: #0066cc;
    border: 1px solid #0066cc;
}

.ds-post-badge--reprint {
    background: rgba(107, 114, 128, 0.1);
    color: #6b7280;
    border: 1px solid #6b7280;
}

.ds-post-card__content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.ds-post-card__category {
    display: inline-block;
    font-size: var(--ds-text-xs);
    font-weight: var(--ds-font-semibold);
    color: var(--ds-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--ds-spacing-2);
}

.ds-post-card__title {
    font-size: var(--ds-text-lg);
    font-weight: var(--ds-font-semibold);
    margin-bottom: var(--ds-spacing-2);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ds-post-card__title a {
    color: var(--ds-text-primary);
    text-decoration: none;
}

.ds-post-card__title a:hover {
    color: var(--ds-primary);
}

.ds-post-card__excerpt {
    font-size: var(--ds-text-sm);
    color: var(--ds-text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.ds-post-card__meta {
    display: flex;
    align-items: center;
    gap: var(--ds-spacing-4);
    font-size: var(--ds-text-xs);
    color: var(--ds-text-muted);
    margin-top: var(--ds-spacing-2);
}

.ds-post-card__meta a {
    color: inherit;
    text-decoration: none;
}

.ds-post-card__meta a:hover {
    color: var(--ds-primary);
}

/* 标签样式 */
.ds-post-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.ds-post-card__tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--ds-bg);
    color: var(--ds-secondary);
    font-size: 12px;
    border-radius: 20px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.ds-post-card__tag:hover {
    background: var(--ds-primary);
    color: #fff;
}

/* ============================
   Post List
   ============================ */

.ds-post-list {
    display: flex;
    flex-direction: column;
    gap: var(--ds-spacing-4);
}

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

.ds-widget {
    background-color: var(--ds-bg-card);
    border-radius: var(--ds-radius-lg);
    border: 1px solid var(--ds-border);
    padding: var(--ds-spacing-4);
    margin-bottom: var(--ds-spacing-4);
}

.ds-widget__title {
    font-size: var(--ds-text-lg);
    font-weight: var(--ds-font-semibold);
    color: var(--ds-text-primary);
    padding-bottom: var(--ds-spacing-3);
    margin-bottom: var(--ds-spacing-3);
    border-bottom: 2px solid var(--ds-primary);
}

.ds-widget__content {
    font-size: var(--ds-text-sm);
}

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

.ds-footer {
    background: linear-gradient(180deg, var(--ds-gray-900) 0%, #0f172a 100%);
    color: var(--ds-gray-300);
    padding: var(--ds-spacing-12) 0 var(--ds-spacing-6);
    margin-top: var(--ds-spacing-12);
}

.ds-footer .container {
    max-width: 1400px;
}

/* Footer三栏Grid布局 - [design-spec] */
.ds-footer-grid {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: var(--ds-spacing-10);
    margin-bottom: var(--ds-spacing-8);
}

/* 左栏：品牌区 */
.ds-footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--ds-spacing-4);
}

.ds-footer-logo {
    display: flex;
    align-items: center;
    gap: var(--ds-spacing-2);
}

.ds-footer-logo img {
    height: 36px;
    width: auto;
}

.ds-footer-site-name {
    font-size: var(--ds-text-xl);
    font-weight: var(--ds-font-bold);
    color: var(--ds-text-inverse);
}

.ds-footer-desc {
    font-size: var(--ds-text-sm);
    color: var(--ds-gray-400);
    line-height: 1.6;
    max-width: 280px;
}

.ds-footer-email {
    display: inline-flex;
    align-items: center;
    gap: var(--ds-spacing-2);
    font-size: var(--ds-text-sm);
    color: var(--ds-gray-400);
    margin-top: var(--ds-spacing-2);
    transition: color var(--ds-transition) var(--ds-ease);
}

.ds-footer-email:hover {
    color: var(--ds-primary);
}

/* 中栏：导航链接 */
.ds-footer-nav {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--ds-spacing-6);
}

.ds-footer-col {
    display: flex;
    flex-direction: column;
    gap: var(--ds-spacing-3);
}

.ds-footer-col h4 {
    font-size: var(--ds-text-sm);
    font-weight: var(--ds-font-semibold);
    color: var(--ds-text-inverse);
    margin-bottom: var(--ds-spacing-2);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.ds-footer-col a {
    font-size: var(--ds-text-sm);
    color: var(--ds-gray-400);
    transition: color var(--ds-transition) var(--ds-ease);
}

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

/* 右栏：社交图标 */
.ds-footer-social {
    display: flex;
    flex-direction: column;
    gap: var(--ds-spacing-4);
}

.ds-footer-social-title {
    font-size: var(--ds-text-sm);
    font-weight: var(--ds-font-semibold);
    color: var(--ds-text-inverse);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.ds-footer-social-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--ds-spacing-3);
}

.ds-footer-social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--ds-gray-800);
    border-radius: var(--ds-radius-md);
    color: var(--ds-gray-400);
    transition: all var(--ds-transition) var(--ds-ease);
}

.ds-footer-social-links a:hover {
    background: var(--ds-primary);
    color: var(--ds-text-inverse);
    transform: translateY(-2px);
}

/* 底部栏 */
.ds-footer-bottom {
    border-top: 1px solid var(--ds-gray-700);
    padding-top: var(--ds-spacing-6);
    display: flex;
    flex-direction: column;
    gap: var(--ds-spacing-4);
    font-size: var(--ds-text-sm);
}

.ds-footer-friends {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--ds-spacing-4);
}

.ds-footer-friends-label {
    color: var(--ds-gray-500);
}

.ds-footer-friends a {
    color: var(--ds-gray-400);
    transition: color var(--ds-transition) var(--ds-ease);
}

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

.ds-footer-copyright {
    text-align: center;
    color: var(--ds-gray-500);
}

.ds-footer-copyright p {
    margin: 0;
}

/* Footer响应式 - [design-spec] */
@media (max-width: 1024px) {
    .ds-footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--ds-spacing-8);
    }

    .ds-footer-brand {
        grid-column: span 2;
    }

    .ds-footer-nav {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .ds-footer-grid {
        grid-template-columns: 1fr;
        gap: var(--ds-spacing-6);
    }

    .ds-footer-brand {
        grid-column: span 1;
    }

    .ds-footer-nav {
        grid-template-columns: repeat(2, 1fr);
    }

    .ds-footer-social {
        align-items: center;
    }

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

    .ds-footer-friends {
        flex-direction: column;
        gap: var(--ds-spacing-2);
    }
}

/* [design-spec] 文章详情页 */
.ds-single__header {
    margin-bottom: var(--ds-spacing-6);
}

.ds-single__category {
    display: inline-block;
    font-size: var(--ds-text-xs);
    font-weight: var(--ds-font-semibold);
    color: var(--ds-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--ds-spacing-2);
}

.ds-single__title {
    font-size: var(--ds-text-4xl);
    font-weight: var(--ds-font-bold);
    line-height: var(--ds-leading-tight);
    margin-bottom: var(--ds-spacing-4);
    color: var(--ds-text-primary);
}

.ds-single__meta {
    display: flex;
    align-items: center;
    gap: var(--ds-spacing-4);
    font-size: var(--ds-text-sm);
    color: var(--ds-text-muted);
}

.ds-single__content {
    font-size: var(--ds-text-lg);
    line-height: var(--ds-leading-relaxed);
    color: var(--ds-text-primary);
}

.ds-single__content p {
    margin-bottom: var(--ds-space-6);
}

.ds-single__content h2 {
    font-size: var(--ds-text-2xl);
    font-weight: var(--ds-font-semibold);
    margin: var(--ds-space-12) 0 var(--ds-space-6);
    padding-bottom: var(--ds-space-3);
    border-bottom: 1px solid var(--ds-border);
}

.ds-single__content h3 {
    font-size: var(--ds-text-xl);
    font-weight: var(--ds-font-semibold);
    margin: var(--ds-space-10) 0 var(--ds-space-5);
}

.ds-single__content h4 {
    font-size: var(--ds-text-lg);
    font-weight: var(--ds-font-medium);
    margin: var(--ds-space-8) 0 var(--ds-space-4);
}

.ds-single__content img {
    border-radius: var(--ds-radius-lg);
    margin: var(--ds-space-6) 0;
    max-width: 100%;
    height: auto;
}

.ds-single__content a {
    color: var(--ds-link-color);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.ds-single__content a:hover {
    color: var(--ds-link-hover-color);
}

/* [design-spec] 代码块 */
.ds-single__content code {
    background-color: var(--ds-gray-100);
    padding: 2px 6px;
    border-radius: var(--ds-radius-sm);
    font-family: var(--ds-font-mono);
    font-size: 0.9em;
    color: var(--ds-error);
}

[data-theme="dark"] .ds-single__content code {
    background-color: var(--ds-gray-800);
    color: var(--ds-accent-light);
}

.ds-single__content pre {
    background-color: var(--ds-gray-800);
    color: var(--ds-gray-100);
    padding: var(--ds-space-4);
    border-radius: var(--ds-radius-lg);
    overflow-x: auto;
    margin: var(--ds-space-6) 0;
    font-family: var(--ds-font-mono);
    font-size: var(--ds-text-sm);
    line-height: 1.6;
}

.ds-single__content pre code {
    background: none;
    padding: 0;
    color: inherit;
    font-size: inherit;
}

/* [design-spec] 引用块 */
.ds-single__content blockquote {
    margin: var(--ds-space-6) 0;
    padding: var(--ds-space-4) var(--ds-space-6);
    border-left: 4px solid var(--ds-primary);
    background-color: var(--ds-bg-secondary);
    border-radius: 0 var(--ds-radius-md) var(--ds-radius-md) 0;
    font-style: italic;
    color: var(--ds-text-secondary);
}

.ds-single__content blockquote p {
    margin-bottom: 0;
}

/* [design-spec] 有序/无序列表 */
.ds-single__content ul,
.ds-single__content ol {
    margin: var(--ds-space-4) 0;
    padding-left: var(--ds-space-6);
}

.ds-single__content ul {
    list-style-type: disc;
}

.ds-single__content ol {
    list-style-type: decimal;
}

.ds-single__content li {
    margin-bottom: var(--ds-space-2);
    line-height: var(--ds-leading-relaxed);
}

/* [design-spec] 表格 */
.ds-single__content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--ds-space-6) 0;
}

.ds-single__content th,
.ds-single__content td {
    padding: var(--ds-space-3) var(--ds-space-4);
    border: 1px solid var(--ds-border);
    text-align: left;
}

.ds-single__content th {
    background-color: var(--ds-bg-secondary);
    font-weight: var(--ds-font-semibold);
}

/* [design-spec] 分割线 */
.ds-single__content hr {
    border: none;
    border-top: 1px solid var(--ds-border);
    margin: var(--ds-space-10) 0;
}

/* [design-spec] 响应式 - 移动端文章详情 */
@media (max-width: 767px) {
    .ds-single__title {
        font-size: var(--ds-text-2xl);
    }
    
    .ds-single__content {
        font-size: var(--ds-text-base);
    }
    
    .ds-single__content h2 {
        font-size: var(--ds-text-xl);
    }
    
    .ds-single__content h3 {
        font-size: var(--ds-text-lg);
    }
    
    .ds-single__content pre {
        padding: var(--ds-space-3);
        font-size: var(--ds-text-xs);
    }
}

.ds-single__content pre code {
    background: none;
    padding: 0;
    color: inherit;
}

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

.ds-comments {
    margin-top: var(--ds-spacing-8);
    padding-top: var(--ds-spacing-8);
    border-top: 1px solid var(--ds-border);
}

.ds-comments__title {
    font-size: var(--ds-text-xl);
    margin-bottom: var(--ds-spacing-6);
}

.ds-comment {
    display: flex;
    gap: var(--ds-spacing-3);
    padding: var(--ds-spacing-4) 0;
    border-bottom: 1px solid var(--ds-border-light);
}

.ds-comment__avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--ds-radius-full);
    overflow: hidden;
    flex-shrink: 0;
}

.ds-comment__body {
    flex: 1;
}

.ds-comment__header {
    display: flex;
    align-items: center;
    gap: var(--ds-spacing-2);
    margin-bottom: var(--ds-spacing-2);
}

.ds-comment__author {
    font-weight: var(--ds-font-semibold);
}

.ds-comment__date {
    font-size: var(--ds-text-xs);
    color: var(--ds-text-muted);
}

.ds-comment__content {
    font-size: var(--ds-text-sm);
    line-height: 1.6;
}

/* ============================
   Responsive
   ============================ */

@media (max-width: 1024px) {
    .ds-content {
        grid-template-columns: 1fr;
    }
    
    .ds-sidebar {
        display: none;
    }
    
    .ds-footer__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    /* ===== 抽屉容器 ===== */
    .ds-header__nav {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        left: 0;
        width: 280px;
        height: 100vh;
        background: #ffffff;
        z-index: 9999;
        transform: translateX(-100%);
        transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: none;
        overflow-y: auto;
        overflow-x: hidden;
        padding: 0;
        gap: 0;
    }

    .ds-header__nav.is-open {
        transform: translateX(0);
        box-shadow: 6px 0 24px rgba(0, 51, 102, 0.2);
    }

    /* ===== 抽屉头部 - 主题蓝渐变 ===== */
    .ds-header-nav-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 20px 16px;
        background: linear-gradient(135deg, #0066cc 0%, #003366 100%);
        color: #fff;
        min-height: 64px;
    }

    .ds-header-nav-header span {
        font-size: 17px;
        font-weight: 600;
        letter-spacing: 0.5px;
    }

    .ds-header-nav-close {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: rgba(255,255,255,0.15);
        border: none;
        border-radius: 50%;
        cursor: pointer;
        color: #fff;
        transition: background 0.2s ease, transform 0.2s ease;
    }

    .ds-header-nav-close:hover {
        background: rgba(255,255,255,0.3);
        transform: rotate(90deg);
    }

    /* ===== 菜单列表 - 交错动画 ===== */
    .ds-header__nav .ds-header__menu {
        flex-direction: column;
        gap: 0;
        width: 100%;
        padding: 8px 0;
    }

    .ds-header__nav .ds-header__menu li {
        width: 100%;
        opacity: 0;
        transform: translateX(-20px);
        transition: opacity 0.3s ease, transform 0.3s ease;
    }

    .ds-header__nav.is-open .ds-header__menu li {
        opacity: 1;
        transform: translateX(0);
    }

    /* 交错延迟 - 每个菜单项依次出现 */
    .ds-header__nav.is-open .ds-header__menu li:nth-child(1) { transition-delay: 0.05s; }
    .ds-header__nav.is-open .ds-header__menu li:nth-child(2) { transition-delay: 0.1s; }
    .ds-header__nav.is-open .ds-header__menu li:nth-child(3) { transition-delay: 0.15s; }
    .ds-header__nav.is-open .ds-header__menu li:nth-child(4) { transition-delay: 0.2s; }
    .ds-header__nav.is-open .ds-header__menu li:nth-child(5) { transition-delay: 0.25s; }
    .ds-header__nav.is-open .ds-header__menu li:nth-child(6) { transition-delay: 0.3s; }
    .ds-header__nav.is-open .ds-header__menu li:nth-child(7) { transition-delay: 0.35s; }
    .ds-header__nav.is-open .ds-header__menu li:nth-child(8) { transition-delay: 0.4s; }

    .ds-header__nav .ds-header__menu a {
        display: flex;
        align-items: center;
        padding: 15px 20px;
        font-size: 15px;
        font-weight: 500;
        color: #333;
        text-decoration: none;
        border-bottom: 1px solid #f0f0f0;
        transition: background 0.2s ease, color 0.2s ease, padding-left 0.2s ease;
    }

    .ds-header__nav .ds-header__menu a:hover,
    .ds-header__nav .ds-header__menu a:active {
        background: #f0f7ff;
        color: #0066cc;
        padding-left: 24px;
    }

    .ds-header__nav .ds-header__menu a .sub-menu {
        padding-left: 16px;
    }

    /* ===== 抽屉底部 ===== */
    .ds-header-nav-footer {
        margin-top: auto;
        padding: 16px;
        border-top: 1px solid #f0f0f0;
        background: #fafafa;
    }

    .ds-header-nav-search-input {
        background: #fff;
        border: 1px solid #e0e0e0;
        border-radius: 20px;
        padding: 10px 16px;
    }

    .ds-header-nav-search-input:focus {
        border-color: #0066cc;
        box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
    }

    /* ===== 遮罩层 ===== */
    .ds-header__overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 20, 40, 0.5);
        z-index: 9998;
        opacity: 0;
        transition: opacity 0.35s ease;
    }

    .ds-header__overlay.is-active {
        display: block;
        opacity: 1;
    }
    
    .ds-hero__title {
        font-size: var(--ds-text-3xl);
    }
    
    /* 移动端文章卡片：改为上图下文布局 */
    .ds-post-card,
    .ds-post-list--list .ds-post-card,
    .ds-post-list--grid .ds-post-card,
    .ds-post-list--magazine .ds-post-card {
        flex-direction: column !important;
    }
    
    .ds-post-card__thumbnail,
    .ds-post-list--list .ds-post-card__thumbnail,
    .ds-post-list--grid .ds-post-card__thumbnail,
    .ds-post-list--magazine .ds-post-card__thumbnail {
        width: 100% !important;
        height: 180px !important;
        border-radius: var(--ds-radius-md) var(--ds-radius-md) 0 0 !important;
    }
    
    .ds-post-card__content,
    .ds-post-list--list .ds-post-card__content,
    .ds-post-list--grid .ds-post-card__content,
    .ds-post-list--magazine .ds-post-card__content {
        width: 100% !important;
        padding: 12px !important;
    }
    
    /* 移动端标题完整显示 */
    .ds-post-card__title {
        -webkit-line-clamp: unset !important;
        white-space: normal !important;
    }
    
    /* 移动端标签横向滚动 */
    .ds-post-card__tags {
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch !important;
        padding-bottom: 4px;
    }
    
    .ds-post-card__tag {
        flex-shrink: 0 !important;
        font-size: 11px !important;
        padding: 2px 8px !important;
    }
    
    /* 暗黑模式适配 */
    [data-theme="dark"] .ds-post-card,
    [data-theme="dark"] .ds-post-card--default,
    [data-theme="dark"] .ds-post-card--modern {
        background: var(--ds-bg-card, #1f2937) !important;
    }
    
    .ds-footer-grid {
        grid-template-columns: 1fr;
    }
}

/* ==================== 侧边栏小工具样式 ==================== */

.ds-sidebar-area {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.widget {
    background: var(--ds-bg-card);
    border-radius: var(--ds-radius-lg);
    padding: 20px;
    box-shadow: var(--ds-shadow-sm);
}

.widget-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--ds-primary);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--ds-primary);
}

/* 搜索小工具 */
.ds-widget--search .ds-search-form {
    display: flex;
    gap: 8px;
}

.ds-widget--search input[type="search"] {
    flex: 1;
    padding: 10px 14px;
    border: 2px solid var(--ds-border);
    border-radius: var(--ds-radius-md);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

.ds-widget--search input[type="search"]:focus {
    border-color: var(--ds-primary);
}

.ds-widget--search button[type="submit"] {
    padding: 10px 16px;
    background: var(--ds-primary);
    color: #fff;
    border: none;
    border-radius: var(--ds-radius-md);
    cursor: pointer;
    transition: background 0.2s;
}

.ds-widget--search button[type="submit"]:hover {
    background: var(--ds-primary-dark);
}

/* 分类目录小工具 */
.ds-categories-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ds-categories-list li {
    padding: 8px 0;
    border-bottom: 1px solid var(--ds-border);
}

.ds-categories-list li:last-child {
    border-bottom: none;
}

.ds-categories-list a {
    color: var(--ds-text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.ds-categories-list a:hover {
    color: var(--ds-primary);
}

/* 最新文章小工具 */
.ds-recent-posts-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ds-recent-post-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--ds-border);
}

.ds-recent-post-item:last-child {
    border-bottom: none;
}

.ds-recent-post-thumbnail {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    border-radius: var(--ds-radius-sm);
    overflow: hidden;
}

.ds-recent-post-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ds-recent-post-title {
    flex: 1;
    font-size: 14px;
    color: var(--ds-text-primary);
    text-decoration: none;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ds-recent-post-title:hover {
    color: var(--ds-primary);
}

/* ============================
   Sidebar Widgets Styles
   ============================ */

/* Widget容器通用样式 */
.widget-nebula {
    background-color: var(--ds-bg-card, #fff);
    border: 1px solid var(--ds-border, #e2e8f0);
    border-radius: var(--ds-radius-lg, 0.75rem);
    padding: var(--ds-spacing-4, 1rem);
    margin-bottom: var(--ds-spacing-4, 1rem);
    transition: box-shadow var(--ds-transition-normal, 0.25s ease);
}

.widget-nebula:hover {
    box-shadow: var(--ds-shadow-md);
}

.widget-nebula .widget-title {
    font-size: var(--ds-text-lg, 1.125rem);
    font-weight: var(--ds-font-semibold, 600);
    color: var(--ds-text-primary, #0f172a);
    padding-bottom: var(--ds-spacing-3, 0.75rem);
    margin-bottom: var(--ds-spacing-3, 0.75rem);
    border-bottom: 2px solid var(--ds-primary, #0ea5e9);
}

/* 热门文章Widget样式 */
.widget-popular-posts {
    background-color: var(--ds-bg-card, #fff);
    border: 1px solid var(--ds-border, #e2e8f0);
    border-radius: var(--ds-radius-lg, 0.75rem);
    padding: var(--ds-spacing-4, 1rem);
    margin-bottom: var(--ds-spacing-4, 1rem);
}

.widget-popular-posts .widget-title {
    font-size: var(--ds-text-lg, 1.125rem);
    font-weight: var(--ds-font-semibold, 600);
    color: var(--ds-text-primary, #0f172a);
    padding-bottom: var(--ds-spacing-3, 0.75rem);
    margin-bottom: var(--ds-spacing-3, 0.75rem);
    border-bottom: 2px solid var(--ds-primary, #0ea5e9);
}

.popular-posts-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.popular-post-item {
    display: flex;
    align-items: center;
    gap: var(--ds-spacing-3, 0.75rem);
    padding: var(--ds-spacing-3, 0.75rem) 0;
    border-bottom: 1px solid var(--ds-border-light, #f1f5f9);
    transition: all var(--ds-transition-fast, 150ms ease);
}

.popular-post-item:last-child {
    border-bottom: none;
}

.popular-post-item:hover {
    background-color: color-mix(in srgb, var(--ds-primary) 10%, transparent);
    border-radius: var(--ds-radius-md, 0.5rem);
    padding-left: var(--ds-spacing-2, 0.5rem);
}

.popular-post-item .post-rank {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    min-width: 24px;
    font-size: var(--ds-text-xs, 0.75rem);
    font-weight: var(--ds-font-bold, 700);
    color: var(--ds-text-inverse, #fff);
    background: linear-gradient(135deg, var(--ds-primary, #0ea5e9), var(--ds-primary-dark, #0284c7));
    border-radius: var(--ds-radius-sm, 0.25rem);
}

.popular-post-item:nth-child(1) .post-rank {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.popular-post-item:nth-child(2) .post-rank {
    background: linear-gradient(135deg, #64748b, #475569);
}

.popular-post-item:nth-child(3) .post-rank {
    background: linear-gradient(135deg, #b45309, #92400e);
}

.popular-post-item .post-link {
    flex: 1;
    font-size: var(--ds-text-sm, 0.875rem);
    color: var(--ds-text-primary, #0f172a);
    text-decoration: none;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color var(--ds-transition-fast, 150ms ease);
}

.popular-post-item .post-link:hover {
    color: var(--ds-primary, #0ea5e9);
}

.popular-post-item .post-views {
    font-size: var(--ds-text-xs, 0.75rem);
    color: var(--ds-text-tertiary, #64748b);
    white-space: nowrap;
}

/* 标签云Widget样式 */
.widget-tag-cloud {
    background-color: var(--ds-bg-card, #fff);
    border: 1px solid var(--ds-border, #e2e8f0);
    border-radius: var(--ds-radius-lg, 0.75rem);
    padding: var(--ds-spacing-4, 1rem);
    margin-bottom: var(--ds-spacing-4, 1rem);
}

.widget-tag-cloud .widget-title {
    font-size: var(--ds-text-lg, 1.125rem);
    font-weight: var(--ds-font-semibold, 600);
    color: var(--ds-text-primary, #0f172a);
    padding-bottom: var(--ds-spacing-3, 0.75rem);
    margin-bottom: var(--ds-spacing-3, 0.75rem);
    border-bottom: 2px solid var(--ds-primary, #0ea5e9);
}

.widget-tag-cloud .tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: var(--ds-spacing-2, 0.5rem);
}

.widget-tag-cloud .tag-cloud a {
    display: inline-flex;
    align-items: center;
    padding: var(--ds-space-1-5, 6px) var(--ds-spacing-3, 0.75rem);
    font-size: var(--ds-text-xs, 0.75rem);
    font-weight: var(--ds-font-medium, 500);
    color: var(--ds-text-secondary, #334155);
    background-color: var(--ds-gray-100, #f1f5f9);
    border-radius: var(--ds-radius-full, 9999px);
    text-decoration: none;
    transition: all var(--ds-transition-fast, 150ms ease);
}

.widget-tag-cloud .tag-cloud a:hover {
    color: var(--ds-text-inverse, #fff);
    background: linear-gradient(135deg, var(--ds-primary, #0ea5e9), var(--ds-primary-dark, #0284c7));
    transform: translateY(-2px);
    box-shadow: var(--ds-shadow-md);
}

/* 彩色标签云变体 */
.widget-tag-cloud .tag-cloud.colorful a:nth-child(6n+1):hover { background: linear-gradient(135deg, #0ea5e9, #0284c7); }
.widget-tag-cloud .tag-cloud.colorful a:nth-child(6n+2):hover { background: linear-gradient(135deg, #10b981, #059669); }
.widget-tag-cloud .tag-cloud.colorful a:nth-child(6n+3):hover { background: linear-gradient(135deg, #f59e0b, #d97706); }
.widget-tag-cloud .tag-cloud.colorful a:nth-child(6n+4):hover { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.widget-tag-cloud .tag-cloud.colorful a:nth-child(6n+5):hover { background: linear-gradient(135deg, #ec4899, #db2777); }
.widget-tag-cloud .tag-cloud.colorful a:nth-child(6n+6):hover { background: linear-gradient(135deg, #06b6d4, #0891b2); }

/* 默认WordPress标签云样式增强 */
.tag-cloud {
    font-size: var(--ds-text-sm, 0.875rem);
}

.tag-cloud a {
    display: inline-block;
    padding: var(--ds-space-1, 4px) var(--ds-spacing-2, 0.5rem);
    margin: 2px;
    color: var(--ds-text-secondary, #334155);
    background-color: var(--ds-gray-100, #f1f5f9);
    border-radius: var(--ds-radius-sm, 0.25rem);
    text-decoration: none;
    transition: all var(--ds-transition-fast, 150ms ease);
}

.tag-cloud a:hover {
    color: var(--ds-text-inverse, #fff);
    background-color: var(--ds-primary, #0ea5e9);
    transform: translateY(-1px);
}

/* ============================
   Dark Mode Support
   ============================ */

@media (prefers-color-scheme: dark) {
    :root {
        --ds-bg-primary: var(--ds-bg-dark);
        --ds-bg-secondary: var(--ds-gray-800);
        --ds-bg-card: var(--ds-gray-800);
        --ds-text-primary: var(--ds-gray-100);
        --ds-text-secondary: var(--ds-gray-400);
        --ds-text-muted: var(--ds-gray-500);
        --ds-border: var(--ds-gray-700);
        --ds-border-light: var(--ds-gray-800);
    }
}

/* ============================
   Related Posts Section
   ============================ */
.ds-related-posts {
    margin: 40px 0;
    padding: 24px;
    background: var(--ds-bg-card, #fff);
    border-radius: var(--ds-radius-lg, 12px);
    border: 1px solid var(--ds-border-light, #e2e8f0);
}

.ds-related-posts__title {
    font-size: var(--ds-font-size-xl, 1.25rem);
    font-weight: var(--ds-font-weight-bold, 700);
    color: var(--ds-text-primary, #1e293b);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--ds-primary, #0ea5e9);
}

.ds-related-posts .ds-post-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

@media (max-width: 1024px) {
    .ds-related-posts .ds-post-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .ds-related-posts .ds-post-list {
        grid-template-columns: 1fr;
    }
    
    .ds-related-posts {
        margin: 24px 0;
        padding: 16px;
    }
}

/* ==================== 404页面样式 ==================== */
.ds-404 {
    text-align: center;
    padding: var(--ds-spacing-16) 0;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ds-404__content {
    max-width: 600px;
    margin: 0 auto;
}

.ds-404__title {
    font-size: 8rem;
    font-weight: var(--ds-font-bold);
    color: var(--ds-primary);
    line-height: 1;
    margin-bottom: var(--ds-spacing-4);
}

.ds-404__subtitle {
    font-size: var(--ds-text-2xl);
    color: var(--ds-text-primary);
    margin-bottom: var(--ds-spacing-4);
}

.ds-404__message {
    font-size: var(--ds-text-lg);
    color: var(--ds-text-secondary);
    margin-bottom: var(--ds-spacing-8);
}

.ds-404__search {
    margin-bottom: var(--ds-spacing-8);
}

.ds-404__search p {
    font-size: var(--ds-text-sm);
    color: var(--ds-text-muted);
    margin-bottom: var(--ds-spacing-3);
}

.ds-404__search form {
    max-width: 400px;
    margin: 0 auto;
}

.ds-404__search input {
    width: 100%;
    padding: var(--ds-spacing-3) var(--ds-spacing-4);
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-md);
    font-size: var(--ds-text-base);
    background: var(--ds-bg-card);
    color: var(--ds-text-primary);
}

.ds-404__search input:focus {
    outline: none;
    border-color: var(--ds-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--ds-primary) 10%, transparent);
}

.ds-404__links {
    display: flex;
    gap: var(--ds-spacing-4);
    justify-content: center;
}

.ds-404__links .btn {
    padding: var(--ds-spacing-3) var(--ds-spacing-6);
    border-radius: var(--ds-radius-md);
    text-decoration: none;
    font-size: var(--ds-text-base);
    font-weight: var(--ds-font-medium);
    transition: all var(--ds-transition);
}

.ds-404__links .btn--primary {
    background: var(--ds-primary);
    color: white;
}

.ds-404__links .btn--primary:hover {
    background: var(--ds-primary-dark);
}

.ds-404__links .btn--secondary {
    background: var(--ds-bg-card);
    color: var(--ds-text-primary);
    border: 1px solid var(--ds-border);
}

.ds-404__links .btn--secondary:hover {
    border-color: var(--ds-primary);
    color: var(--ds-primary);
}

@media (max-width: 640px) {
    .ds-404__title {
        font-size: 5rem;
    }
    .ds-404__links {
        flex-direction: column;
    }
}

/* ============================
   Archive Page Styles
   ============================ */

.ds-archive {
    padding: var(--ds-spacing-6) 0;
}

.ds-archive__header {
    margin-bottom: var(--ds-spacing-6);
    padding-bottom: var(--ds-spacing-4);
    border-bottom: 1px solid var(--ds-border);
}

.ds-archive__title {
    font-size: var(--ds-text-2xl);
    color: var(--ds-text-primary);
    font-weight: var(--ds-font-bold);
    margin-bottom: var(--ds-spacing-2);
}

.ds-archive__description {
    color: var(--ds-text-muted);
    font-size: var(--ds-text-base);
}

/* 分页样式 */
.ds-pagination {
    display: flex;
    justify-content: center;
    gap: var(--ds-spacing-2);
    margin-top: var(--ds-spacing-6);
    padding-top: var(--ds-spacing-4);
    border-top: 1px solid var(--ds-border);
}

.ds-pagination a,
.ds-pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--ds-spacing-3);
    background: var(--ds-bg-card);
    color: var(--ds-text-primary);
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-md);
    text-decoration: none;
    font-size: var(--ds-text-sm);
    transition: all 0.2s ease;
}

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

.ds-pagination .current {
    background: var(--ds-primary);
    color: #fff;
    border-color: var(--ds-primary);
}

.ds-pagination .prev,
.ds-pagination .next {
    padding: 0 var(--ds-spacing-4);
}

/* 无结果样式 */
.ds-no-results {
    text-align: center;
    padding: var(--ds-spacing-8);
    background: var(--ds-bg-card);
    border-radius: var(--ds-radius-lg);
    border: 1px solid var(--ds-border);
}

.ds-no-results h2 {
    font-size: var(--ds-text-xl);
    color: var(--ds-text-primary);
    margin-bottom: var(--ds-spacing-2);
}

.ds-no-results p {
    color: var(--ds-text-muted);
}

/* ============================
   Author Page
   ============================ */

.ds-author {
    position: relative;
}

.ds-author__bg {
    height: 200px;
    background-size: cover;
    background-position: center;
    background-color: var(--ds-primary);
    position: relative;
}

.ds-author__bg::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(transparent, var(--ds-bg-primary));
}

.ds-author__avatar {
    position: absolute;
    bottom: -50px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--ds-bg-primary);
    background: var(--ds-bg-card);
    z-index: 10;
}

.ds-author__avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ds-author__info {
    text-align: center;
    padding: var(--ds-spacing-8) var(--ds-spacing-4);
    padding-top: var(--ds-spacing-12);
}

.ds-author__name {
    font-size: var(--ds-text-2xl);
    font-weight: var(--ds-font-bold);
    color: var(--ds-text-primary);
    margin-bottom: var(--ds-spacing-2);
}

.ds-author__desc {
    font-size: var(--ds-text-base);
    color: var(--ds-text-secondary);
}

.ds-author__posts {
    background: var(--ds-bg-card);
    border-radius: var(--ds-radius-lg);
    padding: var(--ds-spacing-6);
    margin-top: var(--ds-spacing-4);
    border: 1px solid var(--ds-border);
}

.ds-author__tab-header {
    display: flex;
    gap: var(--ds-spacing-6);
    border-bottom: 1px solid var(--ds-border);
    margin-bottom: var(--ds-spacing-6);
}

.ds-author__tab-item {
    padding: var(--ds-spacing-3) var(--ds-spacing-4);
    color: var(--ds-text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all var(--ds-transition);
}

.ds-author__tab-item:hover,
.ds-author__tab-item.cur {
    color: var(--ds-primary);
    border-bottom-color: var(--ds-primary);
}

/* ============================
   Archive Page (ds- prefix)
   ============================ */

.ds-archive-content {
    background: var(--ds-bg-card);
    border-radius: var(--ds-radius-lg);
    padding: var(--ds-spacing-6);
    border: 1px solid var(--ds-border);
}

/* ============================
   Reading Progress Bar
   ============================ */
.ds-reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--ds-primary), var(--ds-secondary));
    z-index: 9999;
    transition: width 0.1s ease-out;
}

/* ============================
   Breadcrumb Navigation
   ============================ */
.ds-breadcrumb-wrapper {
    background: var(--ds-bg-secondary);
    border-bottom: 1px solid var(--ds-border);
    padding: var(--ds-spacing-3) 0;
}

.ds-breadcrumb {
    font-size: var(--ds-text-sm);
}

.ds-breadcrumb__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--ds-spacing-1);
}

.ds-breadcrumb__item,
.ds-breadcrumb__sep {
    display: inline-block;
}

.ds-breadcrumb__sep {
    color: var(--ds-text-muted);
    margin: 0 var(--ds-spacing-1);
}

.ds-breadcrumb__link {
    color: var(--ds-text-secondary);
    text-decoration: none;
    transition: color var(--ds-transition);
}

.ds-breadcrumb__link:hover {
    color: var(--ds-primary);
}

.ds-breadcrumb__current span {
    color: var(--ds-text-primary);
    font-weight: var(--ds-font-medium);
}

/* ============================
   Article Page Enhancements
   ============================ */

/* Single Article Container */
.ds-single {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--ds-spacing-6) var(--ds-spacing-4);
}

.ds-single__header {
    margin-bottom: var(--ds-spacing-6);
}

.ds-single__category {
    display: inline-block;
    padding: var(--ds-spacing-1) var(--ds-spacing-3);
    background: var(--ds-primary);
    color: #fff;
    font-size: var(--ds-text-sm);
    border-radius: var(--ds-radius-sm);
    text-decoration: none;
    margin-bottom: var(--ds-spacing-3);
    transition: opacity var(--ds-transition);
}

.ds-single__category:hover {
    opacity: 0.9;
}

.ds-single__title {
    font-size: var(--ds-text-3xl);
    font-weight: var(--ds-font-bold);
    color: var(--ds-text-primary);
    line-height: 1.4;
    margin-bottom: var(--ds-spacing-4);
}

.ds-single__meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--ds-spacing-4);
    font-size: var(--ds-text-sm);
    color: var(--ds-text-secondary);
}

.ds-single__meta a {
    color: var(--ds-text-secondary);
    text-decoration: none;
}

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

.ds-single__thumbnail {
    margin-bottom: var(--ds-spacing-6);
    border-radius: var(--ds-radius-lg);
    overflow: hidden;
}

.ds-single__featured-image {
    width: 100%;
    height: auto;
    display: block;
}

.ds-single__content {
    font-size: var(--ds-text-base);
    line-height: 1.8;
    color: var(--ds-text-primary);
}

.ds-single__content h2 {
    font-size: var(--ds-text-xl);
    font-weight: var(--ds-font-bold);
    margin: var(--ds-spacing-8) 0 var(--ds-spacing-4);
    padding-bottom: var(--ds-spacing-2);
    border-bottom: 2px solid var(--ds-border);
}

.ds-single__content h3 {
    font-size: var(--ds-text-lg);
    font-weight: var(--ds-font-semibold);
    margin: var(--ds-spacing-6) 0 var(--ds-spacing-3);
}

.ds-single__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--ds-spacing-2);
    margin-top: var(--ds-spacing-6);
    padding-top: var(--ds-spacing-6);
    border-top: 1px solid var(--ds-border);
}

.ds-tag {
    padding: var(--ds-spacing-1) var(--ds-spacing-3);
    background: var(--ds-bg-secondary);
    color: var(--ds-text-secondary);
    font-size: var(--ds-text-sm);
    border-radius: var(--ds-radius-sm);
    text-decoration: none;
    transition: all var(--ds-transition);
}

.ds-tag:hover {
    background: var(--ds-primary);
    color: #fff;
}

.ds-single__navigation {
    display: flex;
    justify-content: space-between;
    margin-top: var(--ds-spacing-6);
    padding: var(--ds-spacing-4) 0;
    border-top: 1px solid var(--ds-border);
}

.ds-single__navigation a {
    color: var(--ds-text-secondary);
    text-decoration: none;
    font-size: var(--ds-text-sm);
    max-width: 45%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: color var(--ds-transition);
}

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

/* Related Posts */
.ds-related-posts {
    margin-top: var(--ds-spacing-8);
    padding-top: var(--ds-spacing-6);
    border-top: 1px solid var(--ds-border);
}

.ds-related-posts__title {
    font-size: var(--ds-text-xl);
    font-weight: var(--ds-font-bold);
    margin-bottom: var(--ds-spacing-4);
    color: var(--ds-text-primary);
}

/* TOC Table of Contents */
.ds-toc {
    background: var(--ds-bg-secondary);
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-md);
    padding: var(--ds-spacing-4);
    margin: var(--ds-spacing-4) 0 var(--ds-spacing-6);
}

.ds-toc__title {
    font-size: var(--ds-text-base);
    font-weight: var(--ds-font-semibold);
    margin-bottom: var(--ds-spacing-3);
    color: var(--ds-text-primary);
}

.ds-toc ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ds-toc > ul > li {
    margin-bottom: var(--ds-spacing-2);
}

.ds-toc a {
    color: var(--ds-text-secondary);
    text-decoration: none;
    font-size: var(--ds-text-sm);
    display: block;
    padding: var(--ds-spacing-1) 0;
    transition: color var(--ds-transition);
}

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

/* ============================
   404 Page Enhancements
   ============================ */
.ds-404 {
    text-align: center;
    padding: var(--ds-spacing-16) var(--ds-spacing-4);
}

.ds-404__title {
    font-size: 8rem;
    font-weight: var(--ds-font-bold);
    color: var(--ds-primary);
    line-height: 1;
    margin-bottom: var(--ds-spacing-4);
}

.ds-404__subtitle {
    font-size: var(--ds-text-2xl);
    color: var(--ds-text-primary);
    margin-bottom: var(--ds-spacing-3);
}

.ds-404__message {
    font-size: var(--ds-text-base);
    color: var(--ds-text-secondary);
    margin-bottom: var(--ds-spacing-6);
}

.ds-404__search {
    margin-bottom: var(--ds-spacing-6);
}

.ds-404__search p {
    font-size: var(--ds-text-sm);
    color: var(--ds-text-muted);
    margin-bottom: var(--ds-spacing-3);
}

.ds-404__search .search-form {
    display: flex;
    justify-content: center;
    gap: var(--ds-spacing-3);
    max-width: 400px;
    margin: 0 auto;
}

.ds-404__search .search-form input[type="search"] {
    flex: 1;
    padding: var(--ds-spacing-3) var(--ds-spacing-4);
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-md);
    font-size: var(--ds-text-base);
}

.ds-404__search .search-form input[type="search"]:focus {
    border-color: var(--ds-primary);
    outline: none;
}

.ds-404__search .search-form input[type="submit"] {
    padding: var(--ds-spacing-3) var(--ds-spacing-5);
    background: var(--ds-primary);
    color: #fff;
    border: none;
    border-radius: var(--ds-radius-md);
    cursor: pointer;
    font-size: var(--ds-text-base);
    transition: opacity var(--ds-transition);
}

.ds-404__search .search-form input[type="submit"]:hover {
    opacity: 0.9;
}

.ds-404__links {
    display: flex;
    justify-content: center;
    gap: var(--ds-spacing-4);
}

.ds-404__links .btn {
    padding: var(--ds-spacing-3) var(--ds-spacing-6);
    border-radius: var(--ds-radius-md);
    text-decoration: none;
    font-weight: var(--ds-font-medium);
    transition: all var(--ds-transition);
}

.ds-404__links .btn--primary {
    background: var(--ds-primary);
    color: #fff;
}

.ds-404__links .btn--primary:hover {
    opacity: 0.9;
}

.ds-404__links .btn--secondary {
    background: var(--ds-bg-secondary);
    color: var(--ds-text-primary);
    border: 1px solid var(--ds-border);
}

.ds-404__links .btn--secondary:hover {
    border-color: var(--ds-primary);
    color: var(--ds-primary);
}

/* ============================
   Back to Top Button
   ============================ */
.ds-back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--ds-primary), var(--ds-primary-dark));
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px color-mix(in srgb, var(--ds-primary) 30%, transparent);
    z-index: 9998;
}

.ds-back-to-top--visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.ds-back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 20px color-mix(in srgb, var(--ds-primary) 40%, transparent);
}

.ds-back-to-top svg {
    display: block;
    margin: auto;
}

/* ============================
   Social Share Buttons
   ============================ */
.ds-share-buttons {
    display: flex;
    gap: var(--ds-spacing-3);
    margin: var(--ds-spacing-6) 0;
    padding: var(--ds-spacing-4);
    background: var(--ds-bg-secondary);
    border-radius: var(--ds-radius-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.ds-share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--ds-radius-md);
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: var(--ds-text-lg);
}

.ds-share-btn--wechat {
    background: #07c160;
    color: #fff;
}

.ds-share-btn--weibo {
    background: #e6162d;
    color: #fff;
}

.ds-share-btn--copy {
    background: var(--ds-gray-700);
    color: #fff;
}

.ds-share-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--ds-shadow-md);
}

/* 微信分享二维码弹窗 */
.ds-share-wechat-qr {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #fff;
    padding: var(--ds-spacing-4);
    border-radius: var(--ds-radius-lg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    z-index: 10000;
    display: none;
    text-align: center;
}

.ds-share-wechat-qr.show {
    display: block;
}

.ds-share-wechat-qr img {
    width: 200px;
    height: 200px;
}

.ds-share-wechat-qr p {
    margin-top: var(--ds-spacing-2);
    color: var(--ds-text-secondary);
    font-size: var(--ds-text-sm);
}

.ds-share-wechat-close {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 24px;
    height: 24px;
    background: var(--ds-gray-200);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

/* 复制链接提示 */
.ds-share-toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--ds-gray-900);
    color: #fff;
    padding: var(--ds-spacing-3) var(--ds-spacing-5);
    border-radius: var(--ds-radius-md);
    font-size: var(--ds-text-sm);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.ds-share-toast.show {
    opacity: 1;
    visibility: visible;
}

/* 分享按钮遮罩层 */
.ds-share-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    display: none;
}

.ds-share-overlay.show {
    display: block;
}

/* ============================
   Responsive Adjustments
   ============================ */
@media (max-width: 768px) {
    .ds-single {
        padding: var(--ds-spacing-4) var(--ds-spacing-3);
    }

    .ds-single__title {
        font-size: var(--ds-text-2xl);
    }

    .ds-single__meta {
        gap: var(--ds-spacing-2);
    }

    .ds-related-posts__title {
        font-size: var(--ds-text-lg);
    }

    .ds-breadcrumb__list {
        flex-wrap: wrap;
    }

    .ds-404__title {
        font-size: 5rem;
    }

    .ds-404__links {
        flex-direction: column;
        align-items: center;
    }

    .ds-404__links .btn {
        width: 100%;
        max-width: 200px;
        text-align: center;
    }
}

/* ============================
   分类Tab样式 - Round 28
   ============================ */
.ds-category-tabs {
    background: var(--ds-color-bg, #fff);
    border-bottom: 1px solid var(--ds-color-border, #e5e7eb);
    padding: 6px 0;
    position: sticky;
    top: var(--ds-nav-height, 56px);
    z-index: 100;
    transition: box-shadow 0.2s ease;
}

.ds-category-tabs.is-stuck {
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.ds-category-tabs__inner {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: 2px 0;
}

.ds-category-tabs__inner::-webkit-scrollbar {
    display: none;
}

.ds-cat-tab {
    flex-shrink: 0;
    padding: 5px 12px;
    border: none;
    background: var(--ds-color-bg-secondary, #f3f4f6);
    color: var(--ds-color-text-secondary, #6b7280);
    font-size: 13px;
    font-weight: 500;
    border-radius: var(--ds-radius-lg, 8px);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.ds-cat-tab:hover {
    background: var(--ds-color-primary-light, #e0f2fe);
    color: var(--ds-color-primary, #0066cc);
}

.ds-cat-tab.active {
    background: var(--ds-color-primary, #0066cc);
    color: #fff;
}

/* ============================
   首页内容布局 - Round 28
   ============================ */
.ds-home-content {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--ds-spacing-6);
    padding: var(--ds-spacing-6) 0;
}

.ds-home-main {
    min-width: 0;
}

.ds-home-sidebar {
    min-width: 0;
}

@media (max-width: 1024px) {
    .ds-home-content {
        grid-template-columns: 1fr;
    }
    
    .ds-home-sidebar {
        display: none;
    }
}

@media (max-width: 768px) {
    .ds-home-content {
        gap: var(--ds-spacing-3);
        padding: var(--ds-spacing-3) 0;
    }
    
    /* 移动端文章卡片等比例缩小 */
    .ds-post-list--list .ds-post-card {
        gap: var(--ds-spacing-3);
    }
    
    .ds-post-list--list .ds-post-card__thumbnail {
        width: 100px;
        min-width: 100px;
        height: 70px;
    }
    
    .ds-post-list--list .ds-post-card__title {
        font-size: var(--ds-text-sm);
        line-height: 1.4;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    
    .ds-post-list--list .ds-post-card__excerpt {
        display: none;  /* 移动端隐藏摘要 */
    }
    
    .ds-post-list--list .ds-post-card__meta {
        font-size: var(--ds-text-xs);
    }
    
    /* 分类Tab移动端横滚 */
    .ds-category-tabs__inner {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        flex-wrap: nowrap;
    }
    
    .ds-category-tabs__inner::-webkit-scrollbar {
        display: none;
    }
    
    .ds-cat-tab {
        white-space: nowrap;
        flex-shrink: 0;
        padding: var(--ds-space-2) var(--ds-space-3);
        font-size: var(--ds-text-sm);
    }
}

/* ============================
   无限滚动加载更多
   ============================ */
.ds-load-more {
    text-align: center;
    padding: var(--ds-spacing-6) 0;
    color: var(--ds-color-text-secondary, #6b7280);
    font-size: var(--ds-text-sm, 14px);
}

.ds-load-more-text {
    display: inline-block;
    padding: var(--ds-spacing-2) var(--ds-spacing-4);
    background: var(--ds-color-bg-secondary, #f3f4f6);
    border-radius: var(--ds-radius-lg, 8px);
}

/* ============================
   Footer隐藏控制 - Round 28
   ============================ */
.ds-footer-hidden {
    display: none !important;
}

/* ============================
   Nebula 特色内容展示区
   桌面端（>= 768px）
   ============================ */
.ds-featured-area {
    width: 100%;
    max-width: var(--ds-container-max-width, 1200px);
    margin: 0 auto 32px;
    padding: 0 var(--ds-page-padding, 40px);
    box-sizing: border-box;
}

.ds-featured-area__inner {
    display: flex;
    gap: 16px;
    height: var(--ds-featured-height, 350px);
    border-radius: var(--ds-featured-radius, 16px);
    overflow: hidden;
    box-shadow: var(--ds-featured-shadow, 0 8px 32px rgba(0, 102, 204, 0.12));
    background: #ffffff;
    transition: box-shadow 0.3s ease;
}

.ds-featured-area__inner:hover {
    box-shadow: var(--ds-featured-shadow-hover, 0 12px 40px rgba(0, 102, 204, 0.18));
}

/* 轮播区域（左侧，60%） */
.ds-featured-carousel {
    position: relative;
    flex: 0 0 60%;
    overflow: hidden;
    border-radius: var(--ds-featured-carousel-radius, 12px);
    background: #0a1628;
}

.ds-featured-carousel__track {
    display: flex;
    height: 100%;
    will-change: transform;
}

.ds-featured-carousel__slide {
    flex: 0 0 100%;
    display: block;
    height: 100%;
    overflow: hidden;
}

.ds-featured-carousel__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease, opacity 0.5s ease;
}

.ds-featured-carousel__slide:hover .ds-featured-carousel__img {
    transform: scale(1.04);
    opacity: 0.9;
}

/* 轮播指示器（底部居中） */
.ds-featured-carousel__dots {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 6px;
    z-index: 10;
}

.ds-featured-carousel__dot {
    width: 8px;
    height: 8px;
    border-radius: 9999px;
    border: none;
    background: rgba(255, 255, 255, 0.45);
    cursor: pointer;
    transition: width 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                background 0.35s ease;
    padding: 0;
    outline: none;
}

.ds-featured-carousel__dot:focus-visible {
    box-shadow: 0 0 0 2px #ffffff;
}

.ds-featured-carousel__dot.is-active {
    width: 24px;
    background: #ffffff;
}

/* 箭头按钮 */
.ds-featured-carousel__arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    opacity: 0;
    transition: opacity 0.3s ease, background 0.3s ease, transform 0.3s ease;
}

.ds-featured-carousel:hover .ds-featured-carousel__arrow {
    opacity: 1;
}

.ds-featured-carousel__arrow:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-50%) scale(1.08);
}

.ds-featured-carousel__arrow:active {
    transform: translateY(-50%) scale(0.95);
}

.ds-featured-carousel__arrow:focus-visible {
    opacity: 1;
    box-shadow: 0 0 0 2px #ffffff;
}

.ds-featured-carousel__arrow--prev { left: 12px; }
.ds-featured-carousel__arrow--next { right: 12px; }

/* 链接卡片区域（右侧，40%） */
.ds-featured-links {
    flex: 0 0 calc(40% - 16px);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ds-featured-link-card {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    border-radius: 12px;
    background: var(--card-bg, #EBF5FF);
    text-decoration: none;
    color: var(--ds-text-color, #1E293B);
    overflow: hidden;
    position: relative;
    transition:
        transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1),
        box-shadow 0.25s ease,
        background 0.2s ease;
    cursor: pointer;
}

.ds-featured-link-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1.5px solid transparent;
    transition: border-color 0.25s ease;
}

.ds-featured-link-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    background: var(--card-bg, #EBF5FF);
}

.ds-featured-link-card:hover::before {
    border-color: var(--card-icon, #0066CC);
}

.ds-featured-link-card:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.ds-featured-link-card:focus-visible {
    outline: 2px solid var(--card-icon, #0066CC);
    outline-offset: 2px;
}

/* 图标 */
.ds-featured-link-card__icon {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--card-icon, #0066CC);
    transition: transform 0.25s ease, background 0.25s ease;
}

.ds-featured-link-card:hover .ds-featured-link-card__icon {
    transform: scale(1.08) rotate(-3deg);
    background: #ffffff;
}

/* 文字区域 */
.ds-featured-link-card__body {
    flex: 1;
    min-width: 0;
}

.ds-featured-link-card__title {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    color: #1E293B;
    margin: 0 0 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: color 0.2s ease;
}

.ds-featured-link-card:hover .ds-featured-link-card__title {
    color: var(--card-icon, #0066CC);
}

.ds-featured-link-card__desc {
    font-size: 12px;
    line-height: 1.5;
    color: var(--ds-text-secondary, #64748B);
    margin: 0;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* 箭头 */
.ds-featured-link-card__arrow {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--card-icon, #0066CC);
    transition: transform 0.25s ease, background 0.25s ease;
}

.ds-featured-link-card:hover .ds-featured-link-card__arrow {
    transform: translateX(3px);
    background: #ffffff;
}

/* 响应式断点 - 平板端（768px – 1023px） */
@media (max-width: 1023px) {
    .ds-featured-area {
        padding: 0 24px;
        margin-bottom: 24px;
    }

    .ds-featured-area__inner {
        height: 300px;
        gap: 12px;
    }

    .ds-featured-links {
        gap: 10px;
    }

    .ds-featured-link-card {
        padding: 16px;
        gap: 12px;
    }

    .ds-featured-link-card__icon {
        width: 44px;
        height: 44px;
    }

    .ds-featured-link-card__title {
        font-size: 14px;
    }

    .ds-featured-link-card__desc {
        font-size: 11px;
    }
}

/* 响应式断点 - 移动端（< 768px） */
@media (max-width: 767px) {
    .ds-featured-area {
        padding: 0 16px;
        margin-bottom: 20px;
    }

    .ds-featured-area__inner {
        flex-direction: column;
        height: auto;
        gap: 12px;
    }

    /* 轮播图在移动端占 220px 高 */
    .ds-featured-carousel {
        flex: none;
        width: 100%;
        height: 220px;
        border-radius: 12px;
    }

    .ds-featured-carousel__arrow {
        display: none;
    }

    /* 右侧链接卡片 */
    .ds-featured-links {
        flex: none;
        width: 100%;
        flex-direction: row;
        gap: 10px;
    }

    .ds-featured-link-card {
        flex: 1;
        flex-direction: column;
        align-items: flex-start;
        padding: 14px;
        gap: 10px;
        height: auto;
    }

    .ds-featured-link-card__icon {
        width: 40px;
        height: 40px;
    }

    .ds-featured-link-card__title {
        font-size: 13px;
        white-space: normal;
        display: -webkit-box;
        -webkit-line-clamp: 1;
    }

    .ds-featured-link-card__desc {
        font-size: 11px;
        -webkit-line-clamp: 2;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .ds-featured-link-card__arrow {
        display: none;
    }
}

/* 响应式断点 - 超小屏（< 375px） */
@media (max-width: 374px) {
    .ds-featured-carousel {
        height: 180px;
    }

    .ds-featured-link-card {
        padding: 12px;
    }

    .ds-featured-link-card__title {
        font-size: 12px;
    }
}

/* ============================
   [design-spec] Reading Progress Bar
   ============================ */
.ds-reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: transparent;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.ds-reading-progress--visible {
    opacity: 1;
}

.ds-reading-progress__bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--ds-primary) 0%, var(--ds-accent) 100%);
    transition: width 0.1s ease-out;
    border-radius: 0 2px 2px 0;
}

/* ============================
   [design-spec] Reading Time
   ============================ */
.ds-single__reading-time {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--ds-text-secondary);
    font-size: var(--ds-text-sm);
}

.ds-single__reading-time svg {
    opacity: 0.7;
}

/* ============================
   [design-spec] Author Card
   ============================ */
.ds-author-card {
    display: flex;
    gap: var(--ds-space-4);
    padding: var(--ds-space-6);
    background: var(--ds-bg-secondary);
    border-radius: var(--ds-radius-lg);
    margin: var(--ds-space-8) 0;
    border: 1px solid var(--ds-border);
}

.ds-author-card__avatar {
    flex-shrink: 0;
}

.ds-author-card__avatar-img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--ds-primary);
}

.ds-author-card__info {
    flex: 1;
    min-width: 0;
}

.ds-author-card__name {
    font-size: var(--ds-text-lg);
    font-weight: var(--ds-font-semibold);
    margin: 0 0 var(--ds-space-2);
}

.ds-author-card__name a {
    color: var(--ds-text-primary);
    text-decoration: none;
}

.ds-author-card__name a:hover {
    color: var(--ds-primary);
}

.ds-author-card__bio {
    color: var(--ds-text-secondary);
    font-size: var(--ds-text-sm);
    margin: 0 0 var(--ds-space-3);
    line-height: 1.6;
}

.ds-author-card__meta {
    font-size: var(--ds-text-xs);
    color: var(--ds-text-tertiary);
}

/* ============================
   [design-spec] Subscribe Section
   ============================ */
.ds-subscribe-section {
    text-align: center;
    padding: var(--ds-space-10) var(--ds-space-6);
    background: linear-gradient(135deg, var(--ds-bg-secondary) 0%, var(--ds-bg-primary) 100%);
    border-radius: var(--ds-radius-lg);
    margin: var(--ds-space-8) 0;
    border: 1px solid var(--ds-border);
}

.ds-subscribe-section__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--ds-primary);
    color: white;
    border-radius: 50%;
    margin-bottom: var(--ds-space-4);
}

.ds-subscribe-section__title {
    font-size: var(--ds-text-xl);
    font-weight: var(--ds-font-semibold);
    margin: 0 0 var(--ds-space-2);
    color: var(--ds-text-primary);
}

.ds-subscribe-section__desc {
    color: var(--ds-text-secondary);
    margin: 0 0 var(--ds-space-6);
    font-size: var(--ds-text-sm);
}

.ds-subscribe-section__form {
    display: flex;
    gap: var(--ds-space-2);
    max-width: 400px;
    margin: 0 auto;
}

.ds-subscribe-section__input {
    flex: 1;
    padding: var(--ds-space-3) var(--ds-space-4);
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-md);
    font-size: var(--ds-text-sm);
    background: var(--ds-bg-primary);
    color: var(--ds-text-primary);
}

.ds-subscribe-section__input:focus {
    outline: none;
    border-color: var(--ds-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.ds-subscribe-section__btn {
    padding: var(--ds-space-3) var(--ds-space-6);
    background: var(--ds-primary);
    color: white;
    border: none;
    border-radius: var(--ds-radius-md);
    font-size: var(--ds-text-sm);
    font-weight: var(--ds-font-medium);
    cursor: pointer;
    transition: background 0.2s ease;
}

.ds-subscribe-section__btn:hover {
    background: var(--ds-primary-dark, #0052a3);
}

/* ============================
   [design-spec] H2/H3/H4 Title Numbering & Styles
   ============================ */
.ds-single__content h2 {
    font-size: var(--ds-text-2xl);
    font-weight: var(--ds-font-bold);
    margin: var(--ds-space-14) 0 var(--ds-space-6);
    padding-bottom: var(--ds-space-3);
    border-bottom: 2px solid var(--ds-border);
    color: var(--ds-text-primary);
    position: relative;
}

.ds-single__content h2::before {
    content: '';
    counter-increment: h2-counter;
    counter-reset: h3-counter;
}

.ds-single__content h2 span {
    display: inline-block;
    padding-left: var(--ds-space-3);
    margin-left: var(--ds-space-3);
    border-left: 3px solid var(--ds-primary);
}

.ds-single__content h3 {
    font-size: var(--ds-text-xl);
    font-weight: var(--ds-font-semibold);
    margin: var(--ds-space-12) 0 var(--ds-space-4);
    color: var(--ds-text-primary);
    position: relative;
    padding-left: var(--ds-space-4);
    border-left: 3px solid var(--ds-accent);
}

.ds-single__content h3::before {
    content: counter(h2-counter) '.' counter(h3-counter);
    counter-increment: h3-counter;
    position: absolute;
    left: -60px;
    color: var(--ds-text-tertiary);
    font-size: var(--ds-text-sm);
    font-weight: var(--ds-font-normal);
}

.ds-single__content h4 {
    font-size: var(--ds-text-lg);
    font-weight: var(--ds-font-medium);
    margin: var(--ds-space-10) 0 var(--ds-space-3);
    color: var(--ds-text-secondary);
}

.ds-single__content h4::before {
    content: counter(h2-counter) '.' counter(h3-counter) '.' counter(h4-counter);
    counter-increment: h4-counter;
    margin-right: var(--ds-space-2);
    color: var(--ds-text-tertiary);
    font-weight: var(--ds-font-normal);
}

/* 初始化计数器 */
.ds-single__content {
    counter-reset: h2-counter h3-counter h4-counter;
}

/* ============================
   [design-spec] Code Block Enhancements
   ============================ */
.ds-single__content pre {
    position: relative;
    background-color: #1e1e1e;
    color: #d4d4d4;
    padding: var(--ds-space-4);
    padding-right: var(--ds-space-12);
    border-radius: var(--ds-radius-lg);
    overflow-x: auto;
    margin: var(--ds-space-6) 0;
    font-family: var(--ds-font-mono);
    font-size: var(--ds-text-sm);
    line-height: 1.6;
    tab-size: 4;
}

/* 代码块复制按钮 */
.ds-code-copy {
    position: absolute;
    top: var(--ds-space-2);
    right: var(--ds-space-2);
    padding: var(--ds-space-2) var(--ds-space-3);
    background: rgba(255, 255, 255, 0.1);
    color: #d4d4d4;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--ds-radius-sm);
    font-size: 11px;
    cursor: pointer;
    transition: all 0.2s ease;
    opacity: 0;
}

.ds-single__content pre:hover .ds-code-copy {
    opacity: 1;
}

.ds-code-copy:hover {
    background: rgba(255, 255, 255, 0.2);
}

.ds-code-copy.copied {
    background: var(--ds-success);
    color: white;
    border-color: var(--ds-success);
}

/* 代码行号 */
.ds-single__content pre code {
    counter-reset: line;
    display: block;
}

.ds-single__content pre code .line {
    display: block;
    padding-left: 2em;
    position: relative;
}

.ds-single__content pre code .line::before {
    counter-increment: line;
    content: counter(line);
    position: absolute;
    left: 0;
    color: #6a9955;
    font-size: 0.85em;
    min-width: 1.5em;
    text-align: right;
    opacity: 0.6;
}

/* ============================
   [design-spec] Related & Popular Posts Grid
   ============================ */
.ds-related-posts,
.ds-popular-posts {
    margin: var(--ds-space-10) 0;
}

.ds-related-posts__title,
.ds-popular-posts__title {
    font-size: var(--ds-text-xl);
    font-weight: var(--ds-font-semibold);
    margin: 0 0 var(--ds-space-6);
    padding-bottom: var(--ds-space-3);
    border-bottom: 2px solid var(--ds-border);
    color: var(--ds-text-primary);
}

.ds-post-list--grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--ds-space-4);
}

/* ============================
   [design-spec] Post Navigation
   ============================ */
.ds-single__navigation {
    display: flex;
    justify-content: space-between;
    gap: var(--ds-space-4);
    margin: var(--ds-space-8) 0;
    padding: var(--ds-space-4) 0;
    border-top: 1px solid var(--ds-border);
    border-bottom: 1px solid var(--ds-border);
}

.ds-single__navigation a {
    color: var(--ds-text-secondary);
    font-size: var(--ds-text-sm);
    text-decoration: none;
    max-width: 45%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

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

/* ============================
   [design-spec] Responsive - Article Page
   ============================ */
@media (max-width: 768px) {
    .ds-author-card {
        flex-direction: column;
        text-align: center;
    }

    .ds-author-card__avatar-img {
        width: 60px;
        height: 60px;
    }

    .ds-subscribe-section__form {
        flex-direction: column;
    }

    .ds-post-list--grid {
        grid-template-columns: 1fr;
    }

    .ds-single__content h2::before,
    .ds-single__content h3::before {
        display: none;
    }

    .ds-single__content h2 {
        font-size: var(--ds-text-xl);
    }

    .ds-single__content h3 {
        font-size: var(--ds-text-lg);
    }

    .ds-single__content pre {
        padding-right: var(--ds-space-4);
    }

    .ds-code-copy {
        opacity: 1;
    }
}

@media (max-width: 480px) {
    .ds-single__meta {
        flex-wrap: wrap;
        gap: var(--ds-space-2);
    }

    .ds-reading-time {
        width: 100%;
    }
}

/* ========================================
   Nebula 安全工具库样式
   ======================================== */

/* 工具Archive页面 */
.ds-tools-archive {
    padding: var(--ds-space-6) 0;
}

.ds-tools-archive__header {
    text-align: center;
    margin-bottom: var(--ds-space-6);
}

.ds-tools-archive__title {
    font-size: var(--ds-font-size-3xl);
    font-weight: var(--ds-font-weight-bold);
    color: var(--ds-color-text);
    margin-bottom: var(--ds-space-2);
}

.ds-tools-archive__description {
    font-size: var(--ds-font-size-lg);
    color: var(--ds-color-text-secondary);
}

/* 工具筛选栏 */
.ds-tools-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--ds-space-4);
    padding: var(--ds-space-4);
    background: var(--ds-color-bg-secondary);
    border-radius: var(--ds-radius-lg);
    margin-bottom: var(--ds-space-6);
}

.ds-tools-filter__categories {
    display: flex;
    flex-wrap: wrap;
    gap: var(--ds-space-2);
}

.ds-tools-filter__link {
    padding: var(--ds-space-2) var(--ds-space-4);
    background: var(--ds-color-bg);
    border: 1px solid var(--ds-color-border);
    border-radius: var(--ds-radius-md);
    color: var(--ds-color-text-secondary);
    font-size: var(--ds-font-size-sm);
    text-decoration: none;
    transition: all var(--ds-transition);
}

.ds-tools-filter__link:hover {
    border-color: var(--ds-color-primary);
    color: var(--ds-color-primary);
}

.ds-tools-filter__link.active {
    background: var(--ds-color-primary);
    border-color: var(--ds-color-primary);
    color: white;
}

.ds-tools-filter__search {
    display: flex;
    gap: var(--ds-space-2);
}

.ds-tools-filter__input {
    padding: var(--ds-space-2) var(--ds-space-3);
    border: 1px solid var(--ds-color-border);
    border-radius: var(--ds-radius-md);
    background: var(--ds-color-bg);
    color: var(--ds-color-text);
    font-size: var(--ds-font-size-sm);
    width: 200px;
    transition: border-color var(--ds-transition);
}

.ds-tools-filter__input:focus {
    outline: none;
    border-color: var(--ds-color-primary);
}

/* 工具网格 */
.ds-tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--ds-space-6);
    margin-bottom: var(--ds-space-6);
}

/* 工具卡片 */
.ds-tool-card {
    display: flex;
    flex-direction: column;
    background: var(--ds-color-bg);
    border: 1px solid var(--ds-color-border);
    border-radius: var(--ds-radius-lg);
    overflow: hidden;
    transition: all var(--ds-transition);
}

.ds-tool-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--ds-color-primary);
}

.ds-tool-card__icon {
    height: 160px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--ds-color-bg-secondary) 0%, var(--ds-color-bg) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.ds-tool-card__icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--ds-transition);
}

.ds-tool-card:hover .ds-tool-card__icon img {
    transform: scale(1.05);
}

.ds-tool-card__icon--placeholder {
    background: linear-gradient(135deg, var(--ds-color-primary) 0%, var(--ds-color-primary-dark) 100%);
}

.ds-tool-card__icon--placeholder .dashicons {
    font-size: 64px;
    width: 64px;
    height: 64px;
    color: rgba(255, 255, 255, 0.8);
}

.ds-tool-card__content {
    padding: var(--ds-space-4);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.ds-tool-card__title {
    font-size: var(--ds-font-size-xl);
    font-weight: var(--ds-font-weight-semibold);
    margin-bottom: var(--ds-space-2);
    line-height: 1.4;
}

.ds-tool-card__title a {
    color: var(--ds-color-text);
    text-decoration: none;
    transition: color var(--ds-transition);
}

.ds-tool-card__title a:hover {
    color: var(--ds-color-primary);
}

.ds-tool-card__excerpt {
    font-size: var(--ds-font-size-sm);
    color: var(--ds-color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--ds-space-4);
    flex: 1;
}

.ds-tool-card__meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--ds-space-3);
    border-top: 1px solid var(--ds-color-border);
}

.ds-tool-card__category {
    display: inline-block;
    padding: var(--ds-space-1) var(--ds-space-2);
    background: var(--ds-color-bg-secondary);
    border-radius: var(--ds-radius-sm);
    font-size: var(--ds-font-size-xs);
    color: var(--ds-color-text-secondary);
}

/* 无结果样式 */
.ds-no-results {
    text-align: center;
    padding: var(--ds-space-8) var(--ds-space-4);
}

.ds-no-results__icon {
    font-size: 64px;
    width: 64px;
    height: 64px;
    color: var(--ds-color-text-secondary);
    opacity: 0.5;
    margin-bottom: var(--ds-space-4);
}

.ds-no-results h2 {
    font-size: var(--ds-font-size-xl);
    margin-bottom: var(--ds-space-2);
}

.ds-no-results p {
    color: var(--ds-color-text-secondary);
    margin-bottom: var(--ds-space-4);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .ds-tools-grid {
        grid-template-columns: 1fr;
    }

    .ds-tools-filter {
        flex-direction: column;
        align-items: stretch;
    }

    .ds-tools-filter__categories {
        justify-content: center;
    }

    .ds-tools-filter__search {
        width: 100%;
    }

    .ds-tools-filter__input {
        flex: 1;
        width: auto;
    }
}

/* ============================
   Page Transition Animation
   ============================ */
/* 页面淡出 */
body.page-transition-out {
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

/* 页面淡入 */
body.page-transition-in {
    animation: page-fade-in 0.4s ease forwards;
}

@keyframes page-fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 加载中动画 */
body.page-loading {
    position: relative;
}

body.page-loading::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--ds-bg-primary);
    z-index: 9999;
    pointer-events: none;
}

body.page-loading::before {
    content: '';
    position: fixed;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 3px solid var(--ds-border);
    border-top-color: var(--ds-primary);
    border-radius: 50%;
    animation: page-spin 0.8s linear infinite;
    z-index: 10000;
}

@keyframes page-spin {
    to { transform: rotate(360deg); }
}

/* ============================
   Keyboard Nav Indicator
   ============================ */
/* 快捷键提示 */
.ds-kbd-hint {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    margin-left: 8px;
    opacity: 0.6;
    font-size: 12px;
}

.ds-kbd-hint kbd {
    display: inline-block;
    padding: 2px 6px;
    background: var(--ds-bg-secondary);
    border: 1px solid var(--ds-border);
    border-radius: 4px;
    font-family: monospace;
    font-size: 11px;
}

/* ============================
   Mobile Nav Footer - Clean Redesign
   ============================ */
.ds-header-nav-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--ds-space-4, 16px);
    border-top: 1px solid var(--ds-border);
    background: var(--ds-bg-primary);
}

.ds-header-nav-search {
    flex: 1;
    max-width: 280px;
}

.ds-header-nav-search-input {
    width: 100%;
    padding: var(--ds-space-2, 8px) var(--ds-space-3, 12px);
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-md, 8px);
    background: var(--ds-bg-secondary);
    font-size: var(--ds-text-sm, 14px);
    color: var(--ds-text-primary);
    transition: all 0.2s ease;
}

.ds-header-nav-search-input:focus {
    outline: none;
    border-color: var(--ds-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.ds-header-nav-actions {
    display: flex;
    align-items: center;
    gap: var(--ds-space-3, 12px);
}

/* 暗黑模式切换按钮 */
.ds-dark-mode-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    color: var(--ds-text-secondary, #666);
    transition: color 0.2s ease, background-color 0.2s ease;
}

.ds-dark-mode-toggle:hover {
    color: var(--ds-primary, #0066cc);
    background-color: var(--ds-bg-hover, #f5f5f5);
}

.ds-dark-mode-toggle .icon-sun {
    display: none;
}

.ds-dark-mode-toggle--mobile {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    color: var(--ds-text-secondary, #666);
    transition: color 0.2s ease, background-color 0.2s ease;
}

.ds-dark-mode-toggle--mobile:hover {
    color: var(--ds-primary, #0066cc);
    background-color: var(--ds-bg-hover, #f5f5f5);
}

/* ============================
   Header Icon Buttons - Unified Style
   ============================ */
.ds-user-menu__avatar-btn,
.ds-dark-mode-toggle,
.ds-dark-mode-toggle--mobile,
.ds-header__hamburger,
.ds-header__search-icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    color: var(--ds-text-secondary, #666);
    transition: color 0.2s ease, background-color 0.2s ease;
}

.ds-user-menu__avatar-btn:hover,
.ds-dark-mode-toggle:hover,
.ds-dark-mode-toggle--mobile:hover,
.ds-header__hamburger:hover,
.ds-header__search-icon-btn:hover {
    color: var(--ds-primary, #0066cc);
    background-color: var(--ds-bg-hover, #f5f5f5);
}

/* 移动端：隐藏PC端搜索框，显示搜索图标按钮 */
@media (max-width: 768px) {
    .ds-header__search form {
        display: none;
    }
    
    .ds-header__search {
        display: flex;
        margin: 0;
        padding: 0;
    }
    
    .ds-header__search-icon-btn {
        display: flex !important;
    }
    
    .ds-header__right {
        gap: var(--ds-space-1, 4px);
    }
}

/* 桌面端：隐藏移动搜索图标按钮 */
@media (min-width: 769px) {
    .ds-header__search-icon-btn {
        display: none !important;
    }
}

/* 桌面端：隐藏移动端导航内的搜索 */
@media (min-width: 769px) {
    .ds-header-nav-footer {
        display: none;
    }
}

/* ============================
   Announcement Banner
   ============================ */
.ds-announcement {
    padding: var(--ds-space-3, 12px) 0;
    background: var(--ds-bg-secondary);
    border-bottom: 1px solid var(--ds-border);
    font-size: var(--ds-text-sm, 14px);
    color: var(--ds-text-secondary);
    text-align: center;
}

.ds-announcement--info {
    background: linear-gradient(90deg, rgba(0, 102, 204, 0.05), rgba(0, 102, 204, 0.1));
    border-color: rgba(0, 102, 204, 0.2);
}

.ds-announcement--warning {
    background: linear-gradient(90deg, rgba(245, 158, 11, 0.05), rgba(245, 158, 11, 0.1));
    border-color: rgba(245, 158, 11, 0.2);
}

.ds-announcement--danger {
    background: linear-gradient(90deg, rgba(239, 68, 68, 0.05), rgba(239, 68, 68, 0.1));
    border-color: rgba(239, 68, 68, 0.2);
}

@media (max-width: 768px) {
    .ds-announcement {
        font-size: var(--ds-text-xs, 12px);
        padding: var(--ds-space-2, 8px) var(--ds-space-3, 12px);
    }
    
    .ds-announcement span {
        display: block;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
}

/* ============================
   Post List Controls & Layout Toggle
   ============================ */
.ds-post-list-controls {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding: var(--ds-space-3, 12px) 0;
    margin-bottom: var(--ds-space-4, 16px);
    border-bottom: 1px solid var(--ds-border);
}

.ds-layout-toggle {
    display: inline-flex;
    gap: var(--ds-space-1, 4px);
    background: var(--ds-bg-secondary);
    padding: 4px;
    border-radius: var(--ds-radius-md, 8px);
}

.ds-layout-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    border-radius: var(--ds-radius-sm, 6px);
    cursor: pointer;
    color: var(--ds-text-secondary);
    transition: all 0.2s ease;
}

.ds-layout-btn:hover {
    background: var(--ds-bg-tertiary);
    color: var(--ds-text-primary);
}

.ds-layout-btn.active {
    background: var(--ds-primary);
    color: white;
    box-shadow: 0 2px 4px rgba(0, 102, 204, 0.3);
}

/* 移动端：隐藏布局切换按钮 */
@media (max-width: 768px) {
    .ds-post-list-controls {
        justify-content: center;
    }
    
    .ds-layout-btn {
        width: 32px;
        height: 32px;
    }
}

/* ============================================
   Footer移动端极致精简 - 只显示版权
   ============================================ */
@media (max-width: 768px) {
    /* 隐藏所有Footer主区域内容 */
    .ds-footer-grid,
    .ds-footer-brand,
    .ds-footer-nav,
    .ds-footer-social,
    .ds-footer-friends,
    .widget-area,
    .ds-footer-logo,
    .ds-footer-site-name,
    .ds-footer-desc,
    .ds-footer-email,
    .ds-footer-col,
    .ds-footer-col h4,
    .ds-footer-col a,
    .ds-footer-social-title,
    .ds-footer-social-links,
    .ds-footer-friends-label {
        display: none !important;
    }
    
    /* 只显示版权区域 */
    .ds-footer-bottom,
    .ds-footer-copyright {
        display: flex !important;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        text-align: center;
        padding: 20px 16px !important;
        gap: 8px !important;
        margin: 0 !important;
        width: 100% !important;
        background: transparent !important;
    }
    
    /* 版权文字样式 - 高对比度 */
    .ds-footer-copyright,
    .ds-footer-copyright p {
        font-size: 12px !important;
        color: rgba(255,255,255,0.95) !important;
        line-height: 1.6 !important;
        margin: 0 !important;
        padding: 0 !important;
        text-align: center !important;
        background: transparent !important;
        visibility: visible !important;
    }
    
    /* 链接也增强对比度 */
    .ds-footer-copyright a {
        color: rgba(255,255,255,0.9) !important;
        text-decoration: underline !important;
    }
    
    /* 隐藏返回顶部按钮，避免遮挡 */
    .ds-back-to-top,
    #rb-float-actions,
    .back-to-top {
        display: none !important;
    }
}

/* ============================================
   分类Tab + 最新文章 同一行布局
   ============================================ */
.ds-category-tabs-wrapper {
    background: var(--ds-color-bg, #fff);
    border-bottom: 1px solid var(--ds-color-border, #e5e7eb);
    padding: 6px 0;
    position: sticky;
    top: var(--ds-nav-height, 56px);
    z-index: 100;
    transition: box-shadow 0.2s ease;
}

.ds-category-tabs-wrapper.is-stuck {
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.ds-category-tabs-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--ds-spacing-3);
}

.ds-category-tabs__inner {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: 2px 0;
}

.ds-category-tabs__inner::-webkit-scrollbar {
    display: none;
}

.ds-cat-tab {
    flex-shrink: 0;
    padding: 5px 12px;
    border: none;
    background: var(--ds-color-bg-secondary, #f3f4f6);
    color: var(--ds-color-text-secondary, #6b7280);
    font-size: 13px;
    font-weight: 500;
    border-radius: var(--ds-radius-lg, 8px);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.ds-cat-tab:hover {
    background: var(--ds-color-primary-light, #e0f2fe);
    color: var(--ds-color-primary, #0066cc);
}

.ds-cat-tab.active {
    background: var(--ds-color-primary, #0066cc);
    color: #fff;
}

.ds-post-list-title {
    font-size: var(--ds-text-lg, 18px);
    font-weight: 600;
    color: var(--ds-color-text-primary, #111827);
    display: flex;
    align-items: center;
    gap: var(--ds-spacing-2);
    margin: 0;
    white-space: nowrap;
}

.ds-post-count {
    font-size: var(--ds-text-sm, 14px);
    font-weight: 400;
    color: var(--ds-color-text-secondary, #6b7280);
}

/* 移动端：分类Tab + 最新文章 上下布局 */
@media (max-width: 768px) {
    .ds-category-tabs-wrapper {
        padding: var(--ds-spacing-2) 0;
        position: relative;
        top: 0;
    }
    
    .ds-category-tabs-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--ds-spacing-2);
    }
    
    .ds-category-tabs__inner {
        width: 100%;
    }
    
    .ds-cat-tab {
        padding: var(--ds-spacing-1) var(--ds-spacing-3);
        font-size: 13px;
    }
    
    .ds-post-list-title {
        font-size: var(--ds-text-base, 16px);
        padding: 0 var(--ds-spacing-4);
    }
}

/* ============================================
   Hero区域移动端高度控制
   ============================================ */
@media (max-width: 768px) {
    .ds-hero {
        padding: var(--ds-spacing-8) 0;
        min-height: auto;
        max-height: 200px;
        overflow: hidden;
    }
    
    .ds-hero__title {
        font-size: var(--ds-text-2xl);
        margin-bottom: var(--ds-spacing-2);
    }
    
    .ds-hero__subtitle {
        font-size: var(--ds-text-sm);
        margin-bottom: var(--ds-spacing-4);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    
    .ds-hero__search {
        display: none;
    }
    
    .ds-hero__actions {
        display: none;
    }
    
    .ds-hero__stats {
        display: none;
    }
}

/* ============================================
   轮播图+卡片 桌面端布局
   ============================================ */
.ds-featured-area__inner {
    display: flex;
    gap: 16px;
}

.ds-featured-carousel {
    flex: 0 0 70%;
}

.ds-featured-links {
    flex: 0 0 30%;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* ============================================
   轮播图+卡片 移动端布局
   ============================================ */
@media (max-width: 768px) {
    .ds-featured-area {
        padding: 0 var(--ds-page-padding, 16px);
        margin-bottom: 16px;
    }
    
    .ds-featured-area__inner {
        flex-direction: column;
        height: auto;
    }
    
    .ds-featured-carousel {
        flex: 0 0 auto;
        height: 180px;
    }
    
    .ds-featured-links {
        flex: 0 0 auto;
        flex-direction: row;
        gap: 12px;
    }
    
    .ds-featured-link-card {
        flex: 1;
        padding: 12px;
    }
    
    .ds-featured-link-card__icon svg {
        width: 20px;
        height: 20px;
    }
    
    .ds-featured-link-card__title {
        font-size: var(--ds-text-sm);
    }
    
    .ds-featured-link-card__desc {
        font-size: var(--ds-text-xs);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    
    .ds-featured-link-card__arrow {
        display: none;
    }
}

/* ============================================
   Footer布局重构 - 左侧Favicon大图 + 右侧两个tagline
   ============================================ */
.ds-footer-grid {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 24px 0;
}

.ds-footer-brand {
    flex: 0 0 auto;
}

.ds-footer-logo {
    width: 64px;
    height: 64px;
    border-radius: 8px;
    object-fit: contain;
    object-position: left center;
}

.ds-footer-taglines {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ds-footer-tagline-1 {
    font-size: 16px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
}

.ds-footer-tagline-2 {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

/* 隐藏原有的网站标题区域（如果存在） */
.ds-footer-site-name,
.ds-footer-desc,
.ds-footer-email,
.ds-footer-email-icon,
.ds-footer-nav,
.ds-footer-social {
    display: none !important;
}

/* Footer底部栏样式优化 */
.ds-footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 16px;
    text-align: center;
}

.ds-footer-friends {
    margin-bottom: 8px;
}

.ds-footer-friends-label {
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
}

.ds-footer-friends a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 12px;
    margin: 0 8px;
}

.ds-footer-friends a:hover {
    color: #fff;
    text-decoration: underline;
}

.ds-footer-copyright {
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
}

.ds-footer-copyright p {
    margin: 0;
}

/* 移动端Footer响应式 */
@media (max-width: 768px) {
    .ds-footer-grid {
        flex-direction: row;
        gap: 16px;
        padding: 16px 0;
    }
    
    .ds-footer-brand {
        flex: 0 0 50px;
    }
    
    .ds-footer-logo {
        width: 48px;
        height: 48px;
    }
    
    .ds-footer-taglines {
        gap: 4px;
    }
    
    .ds-footer-tagline-1 {
        font-size: 14px;
    }
    
    .ds-footer-tagline-2 {
        font-size: 12px;
    }
}

/* ========================
   Header User Avatar - Only show avatar
   ======================== */
.ds-user-menu--member {
    display: flex;
    align-items: center;
    padding: 0 !important;
}
.ds-user-menu__toggle {
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 40px !important;
    height: 40px !important;
    padding: 0 !important;
    border-radius: 50% !important;
    overflow: hidden;
    background: rgba(255,255,255,0.1) !important;
}
.ds-user-menu__avatar {
    width: 36px !important;
    height: 36px !important;
    border-radius: 50% !important;
    object-fit: cover !important;
    margin: 0 !important;
}
/* 隐藏用户名文字 */
.ds-user-menu__name,
.ds-user-menu__username,
.user-name {
    display: none !important;
}
/* 下拉菜单隐藏（如果不需要） */
.ds-user-menu--member .dropdown-menu {
    display: none !important;
}

/* ================================
   侧边栏订阅小工具样式
   ================================ */
.ds-widget--subscribe {
    background: #fff;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 24px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.ds-widget--subscribe .widget-title {
    font-size: 16px;
    font-weight: 600;
    color: #003366;
    margin-bottom: 8px;
}
.ds-subscribe-widget__desc {
    font-size: 13px;
    color: #666;
    margin-bottom: 12px;
}
.ds-subscribe-widget__form {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.ds-subscribe-widget__form input {
    padding: 10px 12px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.2s ease;
}
.ds-subscribe-widget__form input:focus {
    outline: none;
    border-color: #0066cc;
}
.ds-subscribe-widget__form button {
    padding: 10px 16px;
    background: linear-gradient(135deg, #0066cc, #003366);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s ease;
}
.ds-subscribe-widget__form button:hover {
    opacity: 0.9;
}
.ds-subscribe-message {
    margin-top: 8px;
    font-size: 13px;
    padding: 8px;
    border-radius: 6px;
}
.ds-subscribe-message.success {
    background: rgba(0, 102, 204, 0.1);
    color: #0066cc;
}
.ds-subscribe-message.error {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}