/* ========================================
    @font-face 字体定义
    ======================================== */
@font-face {
    font-family: 'JetBrainsMono';
    src: url('../font/JetBrains_Mono/JetBrainsMono-Light.otf') format('opentype');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'JetBrainsMono';
    src: url('../font/JetBrains_Mono/JetBrainsMono-Regular.otf') format('opentype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'JetBrainsMono';
    src: url('../font/JetBrains_Mono/JetBrainsMono-Medium.otf') format('opentype');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'JetBrainsMono';
    src: url('../font/JetBrains_Mono/JetBrainsMono-SemiBold.otf') format('opentype');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'JetBrainsMono';
    src: url('../font/JetBrains_Mono/JetBrainsMono-Bold.otf') format('opentype');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

/* ========================================
    CSS Variables - 主题色彩配置
    ======================================== */
:root {
    --be-blue: #00aeec;
    --be-hover: #0090c4;
    --be-pink: #ff6699;
    --be-golden: #ffd700;
    --be-red: #e74c3c;
    --be-yellow: #f1c40f;
    --be-green: #27ae60;
    --be-bg-white: #ffffff;
    --be-bg-grey-f8: #f8f8f8;
    --be-bg-grey-f1: #f1f1f1;
    --be-bg-grey-e: #eee;
    --be-bg-grey-9: #999;
    --be-bg-grey-6: #666;
    --be-bg-btn: #00aeec;
    --be-bg-glass: rgba(255, 255, 255, 0.85);
    --be-bg-red: #e74c3c;
    --be-bg-code: #f6f8fa;
    --be-white: #fff;
    --be-white-a: rgba(255, 255, 255, 0.9);
    --be-body: #333;
    --be-grey: #666;
    --be-grey-5: #555;
    --be-grey-9: #999;
    --be-grey-a: #aaa;
    --be-grey-c: #ccc;
    --be-border: #e5e5e5;
    --be-border-x: #eee;
    --be-border-z: #ddd;
    --be-border-grey: #e0e0e0;
    --be-shadow: rgba(0, 0, 0, 0.1);
    --be-shadow-d: rgba(0, 0, 0, 0.15);
    --header-height: 60px;
    --sidebar-width: 300px;
    --content-max-width: 1200px;
    --dark-color: #00213e;
    --light-color: #F0F8FF;
    --pink-color: #ff6699;
    --golden-color: #ffd700;
}

@media (prefers-color-scheme: dark) {
    :root {
        --be-bg-white: #0d0d1a;
        --be-bg-grey-f8: #0a0a14;
        --be-bg-grey-f1: #080810;
        --be-bg-grey-e: #0d0d1a;
        --be-body: #d0d0d0;
        --be-grey: #888;
        --be-grey-9: #666;
        --be-border: #1a1a2e;
        --be-border-x: #1a1a2e;
        --be-shadow: rgba(0, 0, 0, 0.5);
        --be-shadow-d: rgba(0, 0, 0, 0.6);
        --be-bg-glass: rgba(10, 10, 20, 0.95);
        --dark-color: #c0c0c0;
        --light-color: #000a14;
        --golden-color: #b8960a;
    }
}

/* ========================================
    基础重置样式
    ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 62.5%;
    scroll-behavior: smooth;
}

body {
    font-family: 'JetBrainsMono', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", "WenQuanYi Micro Hei", "Microsoft YaHei", sans-serif;
    font-size: 1.6rem;
    line-height: 1.8;
    color: var(--be-body);
    background: var(--be-bg-grey-f8);
    min-height: 100vh;
    animation: blurToClear 1s ease-in-out;
    -webkit-animation: blurToClear 1s ease-in-out;
}

@keyframes blurToClear {
    0% { filter: blur(10px); -webkit-filter: blur(10px); opacity: 0; }
    50% { opacity: 1; }
    100% { filter: blur(0); -webkit-filter: blur(0); }
}

a {
    color: var(--be-blue);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

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

.clear {
    clear: both;
}

/* ========================================
    顶部导航栏（基础 - 兼容老内核）
    ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--be-bg-glass);
    border-bottom: 1px solid var(--be-border);
    z-index: 1000;
    transition: all 0.3s ease;
}

.header-inner {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--be-blue);
    display: flex;
    align-items: center;
}

.logo > * + * {
    margin-left: 10px;
}

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

.logo img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

.nav-menu {
    display: flex;
    align-items: center;
    list-style: none;
}

.nav-menu > * {
    margin-left: 25px;
}

.nav-menu > *:first-child {
    margin-left: 0;
}

.nav-menu a {
    color: var(--be-grey);
    font-size: 1.6rem;
    padding: 8px 0;
    position: relative;
}

.nav-menu a:hover {
    color: var(--be-blue);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--be-blue);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-mobile {
    display: none;
    font-size: 2.4rem;
    color: var(--be-grey);
    cursor: pointer;
    order: -1;
    margin-right: 15px;
}

/* 旧导航兼容 */
#navbar {
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.5s ease;
}

#navbar:hover {
    box-shadow: 0 0 40px rgba(0, 161, 214, 0.8), 0 0 50px rgba(0, 100, 255, 0.6);
}

#navbar::before {
    display: none;
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, transparent, var(--blue-color, #00aeec), var(--pink-color, #ff6699), transparent);
    background-size: 200% auto;
    animation: lightFlow 3s linear infinite;
    opacity: 0.7;
    z-index: 1001;
}

#navbar:hover::before { display: block; }

@keyframes lightFlow {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

#navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
}

#navbar ul {
    display: flex;
    list-style: none;
    border-radius: 20px;
    box-shadow: #00000044 0px 2px 10px;
    padding: 7px 5px;
}

#navbar ul li a {
    text-decoration: none;
    color: var(--dark-color);
    padding: 10px 15px;
    transition: all 0.3s;
    position: relative;
}

#navbar ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--be-blue), transparent);
    transition: all 0.3s;
    transform: translateX(-50%);
}

#navbar ul li a:hover {
    color: var(--be-blue);
}

#navbar ul li a:hover::after {
    width: 80%;
}

/* ========================================
    主题切换按钮
    ======================================== */
.theme-btn {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    padding: 5px 10px;
    border-radius: 50%;
    transition: all 0.3s ease;
    color: var(--be-grey);
}

.theme-btn:hover {
    transform: scale(1.2);
    background: rgba(0, 174, 236, 0.2);
}

/* ========================================
    主体布局（基础 - 兼容老内核）
    ======================================== */
.main-container {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: calc(var(--header-height) + 20px) 20px 40px;
    display: flex;
}

.content-area {
    flex: 1;
    min-width: 0;
    order: 2;
}

.sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    order: 1;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================================
    轮播图 / Banner
    ======================================== */
.carousel {
    background: linear-gradient(135deg, #00dbde 0%, #fc00ff 50%, #00dbde 100%);
    background-size: 400% 400%;
    animation: gradientBG 10s ease infinite;
    border-radius: 12px;
    padding: 60px 40px;
    margin-bottom: 25px;
    color: var(--be-white);
    position: relative;
    overflow: hidden;
    text-align: center;
}

@keyframes gradientBG {
    0% { background-position: 0% 0% }
    50% { background-position: 100% 100% }
    100% { background-position: 0% 0% }
}

.carousel::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
}

.carousel .profile_img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid var(--be-white);
    box-shadow: 0 0 50px rgba(255,255,255,0.5);
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
    transition: all 0.5s ease;
}

.carousel .profile_img:hover {
    transform: translateY(-15px) rotate(360deg) scale(1.2);
}

.carousel h2 {
    font-size: 3.2rem;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
    text-shadow: 2px 2px 5px rgba(0,0,0,0.5);
}

.carousel p {
    font-size: 1.8rem;
    opacity: 0.95;
    position: relative;
    z-index: 1;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.75);
}

.carousel-btn {
    display: inline-block;
    margin-top: 20px;
    padding: 12px 30px;
    background: var(--be-white);
    color: var(--be-blue);
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
    border: 3px solid var(--be-white);
}

.carousel-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
    background: transparent;
    color: var(--be-white);
}

/* 旧 Banner 兼容 */
.banner {
    height: auto;
    min-height: calc(100vh + 50px);
    color: #F0F8FF;
    display: flex;
    align-items: center;
    text-align: center;
    border-bottom: rgba(240, 248, 255, 0.5) 2px solid;
    padding-top: 75px;
    padding-bottom: 50px;
    margin-bottom: 30px;
    border-bottom-left-radius: 50px;
    border-bottom-right-radius: 50px;
    box-shadow: rgba(0, 0, 0, 0.45) 0px 5px 25px;
}

.gradient {
    background: linear-gradient(135deg, rgb(0, 219, 222), rgb(252, 0, 255), rgb(0, 219, 222));
    background-size: 400% 400%;
    animation: gradientBG 10s ease infinite;
}

.banner h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 5px rgba(0,0,0,0.5);
}

.banner p {
    font-size: 1.6rem;
    margin-bottom: 30px;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.75);
}

/* ========================================
    分类导航（基础 - 兼容老内核）
    ======================================== */
.category-nav {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 25px;
    margin-right: -15px;
}

.category-nav > * {
    margin-right: 15px;
    margin-bottom: 15px;
}

.category-item {
    flex: 1;
    min-width: 150px;
    background: var(--be-bg-white);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 12px var(--be-shadow);
    transition: all 0.3s ease;
}

.category-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--be-shadow-d);
}

.category-icon { font-size: 3rem; margin-bottom: 10px; }
.category-name { font-size: 1.6rem; font-weight: 600; color: var(--be-body); }
.category-count { font-size: 1.4rem; color: var(--be-grey-9); margin-top: 5px; }

/* ========================================
    文章列表 / 产品列表（基础 - 兼容老内核）
    ======================================== */
.post-list {
    display: flex;
    flex-direction: column;
}

.post-list > * + * {
    margin-top: 20px;
}

.post-item {
    background: var(--be-bg-white);
    border-radius: 10px;
    box-shadow: 0 2px 12px var(--be-shadow);
    overflow: hidden;
    display: flex;
    transition: all 0.3s ease;
}

.post-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--be-shadow-d);
}

.post-thumbnail {
    width: 280px;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--be-bg-grey-f8);
    padding: 20px;
}

.post-thumbnail img {
    width: 80%;
    height: auto;
    max-height: 180px;
    object-fit: contain;
    transition: transform 0.5s ease;
}

.post-item:hover .post-thumbnail img {
    transform: scale(1.1);
}

.post-area {
    flex: 1;
    padding: 25px 30px;
    display: flex;
    flex-direction: column;
}

.post-title {
    font-size: 2rem;
    font-weight: 600;
    color: var(--be-body);
    margin-bottom: 12px;
    line-height: 1.4;
}

.post-title a { color: inherit; }
.post-title a:hover { color: var(--be-blue); }

.post-excerpt {
    font-size: 1.5rem;
    color: var(--be-grey);
    line-height: 1.8;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-meta {
    display: flex;
    align-items: center;
    font-size: 1.4rem;
    color: var(--be-grey-9);
    margin-top: 15px;
}

.post-meta > * {
    margin-left: 20px;
}

.post-meta > *:first-child {
    margin-left: 0;
}

.post-meta span { display: flex; align-items: center; }
.post-meta span > * + * { margin-left: 5px; }

.read-more {
    margin-left: auto;
    padding: 6px 18px;
    background: var(--be-bg-grey-f8);
    border-radius: 20px;
    font-size: 1.4rem;
    color: var(--be-blue);
    transition: all 0.3s ease;
}

.read-more:hover {
    background: var(--be-blue);
    color: var(--be-white);
}

/* 旧作品网格兼容（基础 - 兼容老内核） */
.projects-grid {
    display: flex;
    flex-wrap: wrap;
    margin: -15px;
}

.project-card {
    text-decoration: none;
    background: var(--be-bg-white);
    border-radius: 30px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.5s ease;
    transform-style: preserve-3d;
    perspective: 1000px;
    flex: 1 1 300px;
    margin: 15px;
}

.project-card:hover {
    box-shadow: 0 10px 25px var(--be-blue);
    transform: scale(1.1);
}

.project-card img {
    width: 40%;
    float: left;
    height: auto;
    object-fit: cover;
}

.project-card h3 {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin: 15px 15px 5px;
    max-height: 2rem;
    color: var(--be-body);
    font-size: 1.8rem;
}

.project-card:hover h3 {
    max-height: 10rem;
    white-space: normal;
}

.project-card p {
    display: -webkit-box;
    line-clamp: 3;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    max-height: 4.75rem;
    padding: 0 15px 10px;
    color: var(--be-body);
    font-size: 1.5rem;
}

.project-card:hover p {
    max-height: 50vh;
    display: block;
}

.project-card-content {
    width: 60%;
    float: right;
}

/* ========================================
    关于我区域（基础 - 兼容老内核）
    ======================================== */
.about-section {
    background: var(--be-bg-white);
    border-radius: 10px;
    box-shadow: 0 2px 12px var(--be-shadow);
    padding: 30px;
    margin-bottom: 25px;
}

.about-section h3 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--be-body);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--be-blue);
}

.about-content {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

.about-content > * + * {
    margin-left: 30px;
}

.about-content .profile_img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--be-blue);
    box-shadow: 0 0 30px rgba(0, 174, 236, 0.3);
    transition: all 0.5s ease;
}

.about-content .profile_img:hover {
    transform: translateY(-10px) rotate(360deg) scale(1.1);
}

.about-info { flex: 1; }
.about-info p { font-size: 1.6rem; color: var(--be-body); margin-bottom: 10px; }

.social-links {
    display: flex;
    flex-wrap: wrap;
    margin-top: 20px;
}

.social-links > * {
    margin-right: 15px;
    margin-bottom: 10px;
}

.social-links > *:last-child {
    margin-right: 0;
}

.social-btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-align: center;
    border: 3px solid transparent;
    font-size: 1.5rem;
}

.social-btn.bilibili {
    background: #ff6699;
    color: var(--be-white);
    border-color: #ff6699;
}

.social-btn.bilibili:hover {
    background: transparent;
    color: #ff6699;
}

.social-btn.github {
    background: #1f2318;
    color: aliceblue;
    border-color: #1f2318;
}

.social-btn.github:hover {
    background: transparent;
    color: #1f2318;
}

/* 旧个人简介兼容 */
.profile {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

.profile > * + * {
    margin-left: 50px;
}

.bio { flex: 1; }
.bio p { margin-bottom: 20px; font-size: 1.6rem; }

/* ========================================
    内容区块
    ======================================== */
.section {
    padding: 100px 0;
}

.section h2 {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 60px;
    color: var(--be-body);
    position: relative;
}

.section h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--be-blue);
    border-radius: 2px;
    box-shadow: var(--be-blue) 0 1px 10px;
}

.light-bg { background-color: var(--be-bg-grey-f8); }

/* ========================================
    按钮样式
    ======================================== */
.btn {
    display: inline-block;
    background: var(--be-blue);
    color: var(--be-white);
    padding: 12px 25px;
    border-radius: 30px;
    border: 3px solid var(--be-blue);
    text-decoration: none;
    font-weight: bold;
    text-align: center;
    box-shadow: rgba(0, 0, 0, 0.25) 0 5px 10px;
    transition: all 0.3s ease;
    font-size: 1.6rem;
}

.btn:hover {
    background: none;
    color: var(--be-blue);
    box-shadow: var(--be-blue) 0 5px 20px;
    transform: scale(1.2);
}

.btn:active {
    transform: translateY(0);
    box-shadow: var(--be-blue) 0 0px 0px;
}

.bilibili { background: var(--be-pink); border-color: var(--be-pink); }
.bilibili:hover { color: var(--be-pink); box-shadow: var(--be-pink) 0 5px 20px; }
.github { color: aliceblue; background: #1f2318; border-color: #1f2318; }
.github:hover { color: #1f2318; box-shadow: #1f2318 0 5px 20px; }

/* ========================================
    图片样式
    ======================================== */
.profile_img {
    width: 80%;
    height: auto;
    max-width: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid var(--be-blue);
    box-shadow: 0 0 100px var(--be-blue);
    transition: all 0.5s ease;
}

.profile_img:hover {
    transform: translateY(-15px) rotate(360deg) scale(1.2);
    box-shadow: 0 20px 200px var(--be-blue);
}

.product_img {
    width: 80%;
    height: auto;
    max-width: 200px;
    object-fit: cover;
    transition: all 0.5s ease;
}

.product_img:hover { transform: translateY(-15px); }

/* ========================================
    侧边栏样式
    ======================================== */
.sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
}

.widget {
    background: var(--be-bg-white);
    border-radius: 8px;
    box-shadow: 0 2px 12px var(--be-shadow);
    margin-bottom: 20px;
    overflow: hidden;
}

.widget-title {
    font-size: 1.7rem;
    font-weight: 600;
    color: var(--be-body);
    padding: 15px 20px;
    border-bottom: 1px solid var(--be-border-x);
    background: linear-gradient(135deg, #f8f9fa 0%, #fff 100%);
    display: flex;
    align-items: center;
}

.widget-title::before {
    content: '';
    width: 4px;
    height: 18px;
    background: var(--be-blue);
    border-radius: 2px;
    margin-right: 10px;
}

.widget-content { padding: 15px 20px; }

/* 公告小工具 */
.notice-widget p { margin-bottom: 10px; font-size: 1.5rem; line-height: 1.8; }
.notice-widget strong { color: var(--be-red); }
.notice-widget a { display: block; margin-top: 5px; font-size: 1.5rem; padding: 5px 0; border-bottom: 1px dashed var(--be-border); }
.notice-widget a:last-child { border-bottom: none; }

/* 热门产品 */
.hot-posts li { padding: 12px 0; border-bottom: 1px dashed var(--be-border); }
.hot-posts li:last-child { border-bottom: none; }
.hot-posts a { font-size: 1.5rem; color: var(--be-body); display: block; transition: all 0.3s ease; }
.hot-posts a:hover { color: var(--be-blue); padding-left: 5px; }
.hot-posts .hot-num {
    display: inline-block;
    width: 20px;
    height: 20px;
    line-height: 20px;
    text-align: center;
    background: var(--be-bg-grey-e);
    border-radius: 3px;
    font-size: 1.3rem;
    color: var(--be-grey-9);
    margin-right: 8px;
}
.hot-posts li:nth-child(1) .hot-num { background: var(--be-red); color: var(--be-white); }
.hot-posts li:nth-child(2) .hot-num { background: var(--be-yellow); color: var(--be-white); }
.hot-posts li:nth-child(3) .hot-num { background: var(--be-green); color: var(--be-white); }

/* 标签云（基础 - 兼容老内核） */
.tag-cloud { display: flex; flex-wrap: wrap; }
.tag-cloud a {
    display: inline-block;
    padding: 5px 12px;
    margin-right: 8px;
    margin-bottom: 8px;
    background: var(--be-bg-grey-f8);
    border-radius: 15px;
    font-size: 1.4rem;
    color: var(--be-grey);
    transition: all 0.3s ease;
}
.tag-cloud a:hover { background: var(--be-blue); color: var(--be-white); }

/* ========================================
    友情链接（基础 - 兼容老内核）
    ======================================== */
.friend-links {
    background: var(--be-bg-white);
    border-radius: 8px;
    box-shadow: 0 2px 12px var(--be-shadow);
    padding: 25px 30px;
    margin-bottom: 20px;
}

.friend-links-title {
    font-size: 1.9rem;
    font-weight: 600;
    color: var(--be-body);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

.friend-links-title > * + * {
    margin-left: 10px;
}

.friend-links-title i { color: var(--be-blue); }

.links-list { display: flex; flex-wrap: wrap; }
.links-list a {
    display: inline-block;
    padding: 6px 15px;
    margin-right: 10px;
    margin-bottom: 10px;
    background: var(--be-bg-grey-f8);
    border: 1px solid var(--be-border);
    border-radius: 20px;
    font-size: 1.5rem;
    color: var(--be-grey);
    transition: all 0.3s ease;
}
.links-list a:hover {
    background: var(--be-blue);
    border-color: var(--be-blue);
    color: var(--be-white);
    transform: translateY(-2px);
}

/* ========================================
    页脚样式（基础 - 兼容老内核）
    ======================================== */
.footer {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: var(--be-white-a);
    padding: 40px 20px 30px;
    margin-top: 40px;
}

.footer-content {
    max-width: var(--content-max-width);
    margin: 0 auto;
}

.footer-main {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.footer-col {
    flex: 1 1 200px;
    margin-bottom: 20px;
    padding-right: 30px;
}

.footer-col h4 {
    font-size: 1.7rem;
    color: var(--be-white);
    margin-bottom: 15px;
}

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; font-size: 1.5rem; }
.footer-col a { color: var(--be-white-a); font-size: 1.5rem; }
.footer-col a:hover { color: var(--be-blue); }

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-bottom p { font-size: 1.5rem; margin-bottom: 8px; }

/* 旧页脚兼容 */
footer {
    color: var(--be-body);
    text-align: center;
    padding: 40px 0;
}

footer p { margin: 10px 0; font-size: 1.5rem; }

footer h2 {
    position: relative;
    margin-bottom: 5px;
    font-size: 2rem;
}

footer h2::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 40%;
    transform: translateX(-50%);
    width: 80%;
    height: 3px;
    background: var(--be-blue);
    border-radius: 2px;
    box-shadow: var(--be-blue) 0 1px 10px;
}

footer .show {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: left;
}

footer .show .row {
    flex-direction: column;
    border-left: var(--be-body) 1px solid;
}

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

footer ul li { margin: 10px 0; font-size: 1.5rem; }

footer ul li a {
    color: var(--be-body);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    display: inline-block;
    font-size: 1.5rem;
}

footer ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--be-blue), transparent);
    transform: translateX(-50%);
    transition: all 0.3s ease;
}

footer ul li a:hover {
    color: var(--be-blue);
}

footer ul li a:hover::after { width: 100%; }

/* ========================================
    滚动条美化
    ======================================== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--be-bg-grey-f1); }
::-webkit-scrollbar-thumb { background: var(--be-grey-c); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--be-grey-9); }

/* ========================================
     响应式设计
     ======================================== */
@media screen and (max-width: 1024px) {
    .sidebar { display: none; }
    .main-container { padding: calc(var(--header-height) + 15px) 15px 30px; }
}

/* 移动端侧边栏 */
.mobile-sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-sidebar {
    position: fixed;
    top: 0;
    left: -320px;
    width: 300px;
    max-width: 85vw;
    height: 100%;
    background: var(--be-bg-white);
    z-index: 999;
    overflow-y: auto;
    transition: left 0.3s ease;
    box-shadow: 5px 0 20px var(--be-shadow);
}

.mobile-sidebar.active {
    left: 0;
}

.mobile-sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--be-border);
}

.mobile-sidebar-header h3 {
    font-size: 1.7rem;
    color: var(--be-body);
}

.mobile-sidebar-close {
    background: none;
    border: none;
    font-size: 2.4rem;
    cursor: pointer;
    color: var(--be-grey);
    padding: 5px;
    transition: color 0.3s ease;
}

.mobile-sidebar-close:hover {
    color: var(--be-blue);
}

.mobile-sidebar .widget {
    border-radius: 0;
    box-shadow: none;
    border-bottom: 1px solid var(--be-border-x);
}

.mobile-sidebar .widget:last-child {
    border-bottom: none;
}

.mobile-sidebar .widget-title {
    font-size: 1.5rem;
    padding: 12px 20px;
}

.mobile-sidebar .widget-content {
    padding: 12px 20px;
}

@media screen and (max-width: 768px) {
    .nav-menu { display: none; }
    .nav-mobile { display: block; }
    .post-item { flex-direction: column; }
    .post-thumbnail { width: 100%; height: 200px; }
    .footer-main { flex-direction: column; }
    .footer-col { padding-right: 0; }
    .category-nav { flex-direction: column; }
    .about-content { flex-direction: column; text-align: center; }
    .about-content > * + * { margin-left: 0; margin-top: 20px; }
    .banner h1 { font-size: 2.5rem; }
    .banner p { font-size: 1.4rem; }
    .profile { flex-direction: column; text-align: center; }
    .profile > * + * { margin-left: 0; margin-top: 20px; }
    .profile img { margin: 0 auto; }
    #navbar .container { flex-direction: column; }
    footer .show { flex-direction: column; }
    footer .show .row {
        border-left: none;
        border-top: var(--be-body) 1px solid;
        margin-top: 10px;
        padding-top: 10px;
    }
    .project-card:hover { transform: scale(1.05); }
}

@media screen and (max-width: 480px) {
    .footer-main { flex-direction: column; }
    .carousel h2 { font-size: 2.2rem; }
}

/* ========================================
    暗色模式覆盖
    ======================================== */
[data-theme="dark"] {
    --be-bg-white: #0d0d1a;
    --be-bg-grey-f8: #0a0a14;
    --be-bg-grey-f1: #080810;
    --be-bg-grey-e: #0d0d1a;
    --be-bg-code: #111122;
    --be-body: #d0d0d0;
    --be-grey: #888;
    --be-grey-5: #777;
    --be-grey-9: #666;
    --be-grey-a: #777;
    --be-grey-c: #444;
    --be-border: #1a1a2e;
    --be-border-x: #1a1a2e;
    --be-border-z: #222244;
    --be-border-grey: #222244;
    --be-shadow: rgba(0, 0, 0, 0.5);
    --be-shadow-d: rgba(0, 0, 0, 0.6);
    --be-bg-glass: rgba(10, 10, 20, 0.95);
    --dark-color: #c0c0c0;
    --light-color: #000a14;
    --golden-color: #b8960a;
}

[data-theme="dark"] body { background: var(--be-bg-grey-f8); color: var(--be-body); }
[data-theme="dark"] .header { background: var(--be-bg-glass); border-bottom-color: var(--be-border); }
[data-theme="dark"] .logo { color: var(--be-blue); }
[data-theme="dark"] .nav-menu a { color: var(--be-body); }
[data-theme="dark"] .nav-menu a:hover { color: var(--be-blue); }
[data-theme="dark"] #navbar { background: rgba(10, 10, 20, 0.95); }
[data-theme="dark"] .logo,
[data-theme="dark"] #navbar ul {
    background: rgba(10, 10, 20, 0.95);
    box-shadow: 0 2px 10px rgba(0, 161, 214, 0.2);
}
[data-theme="dark"] .project-card { background: #0d0d1a; }
[data-theme="dark"] .project-card h3 { color: var(--be-body); }
[data-theme="dark"] .project-card p { color: var(--be-body); }
[data-theme="dark"] footer .show .row { border-color: rgba(208, 208, 208, 0.15); }
[data-theme="dark"] footer ul li a { color: var(--be-body); }
[data-theme="dark"] footer ul li a:hover { color: var(--be-blue); }
[data-theme="dark"] .widget { background: var(--be-bg-white); }
[data-theme="dark"] .widget-title { color: var(--be-body); border-bottom-color: var(--be-border-x); }
[data-theme="dark"] .hot-posts a { color: var(--be-body); }
[data-theme="dark"] .hot-posts a:hover { color: var(--be-blue); }
[data-theme="dark"] .notice-widget a { border-bottom-color: var(--be-border); color: var(--be-body); }
[data-theme="dark"] .notice-widget a:hover { color: var(--be-blue); }
[data-theme="dark"] .tag-cloud a { background: var(--be-bg-grey-f8); color: var(--be-body); }
[data-theme="dark"] .tag-cloud a:hover { background: var(--be-blue); color: var(--be-white); }
[data-theme="dark"] .post-item { background: var(--be-bg-white); }
[data-theme="dark"] .post-title { color: var(--be-body); }
[data-theme="dark"] .post-title a { color: var(--be-body); }
[data-theme="dark"] .post-title a:hover { color: var(--be-blue); }
[data-theme="dark"] .post-excerpt { color: var(--be-body); }
[data-theme="dark"] .post-meta { color: var(--be-body); }
[data-theme="dark"] .read-more { background: var(--be-bg-grey-f8); color: var(--be-blue); }
[data-theme="dark"] .read-more:hover { background: var(--be-blue); color: var(--be-white); }
[data-theme="dark"] .about-section { background: var(--be-bg-white); }
[data-theme="dark"] .about-section h3 { color: var(--be-body); border-bottom-color: var(--be-blue); }
[data-theme="dark"] .about-info p { color: var(--be-body); }
[data-theme="dark"] .friend-links { background: var(--be-bg-white); }
[data-theme="dark"] .friend-links-title { color: var(--be-body); }
[data-theme="dark"] .links-list a { background: var(--be-bg-grey-f8); border-color: var(--be-border); color: var(--be-body); }
[data-theme="dark"] .links-list a:hover { background: var(--be-blue); border-color: var(--be-blue); color: var(--be-white); }
[data-theme="dark"] .category-item { background: var(--be-bg-white); }
[data-theme="dark"] .category-name { color: var(--be-body); }
[data-theme="dark"] .category-count { color: var(--be-body); }
[data-theme="dark"] .section h2 { color: var(--be-body); }
[data-theme="dark"] .banner { color: var(--be-body); }
[data-theme="dark"] .bio p { color: var(--be-body); }
[data-theme="dark"] .product-introarea p { color: var(--be-body); }
[data-theme="dark"] .product-introarea h3 { color: var(--be-body); }
[data-theme="dark"] .product-intro { color: var(--be-body); border-color: var(--be-blue); }
[data-theme="dark"] .product-intro:hover { background: var(--be-blue); color: var(--be-white); }
[data-theme="dark"] #contact-form input,
[data-theme="dark"] #contact-form textarea { background: var(--be-bg-grey-f8); color: var(--be-body); border-color: var(--be-border); }
[data-theme="dark"] ::-webkit-scrollbar-track { background: var(--be-bg-grey-f1); }
[data-theme="dark"] ::-webkit-scrollbar-thumb { background: var(--be-grey-c); }
[data-theme="dark"] ::-webkit-scrollbar-thumb:hover { background: var(--be-grey-9); }
[data-theme="dark"] .theme-btn { color: var(--be-grey); }
[data-theme="dark"] .theme-btn:hover { background: rgba(0, 174, 236, 0.15); }
[data-theme="dark"] .carousel h2 { color: var(--be-white); }
[data-theme="dark"] .carousel p { color: var(--be-white-a); }
[data-theme="dark"] .widget-title { background: linear-gradient(135deg, var(--be-bg-grey-f8) 0%, var(--be-bg-white) 100%); }

/* ========================================
    滚动动画 - 淡入效果
    ======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-left.visible { opacity: 1; transform: translateX(0); }

.fade-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-right.visible { opacity: 1; transform: translateX(0); }

/* ========================================
    粒子画布
    ======================================== */
#particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.banner .container {
    position: relative;
    z-index: 2;
}

/* ========================================
    打字机效果
    ======================================== */
#typewriter-title {
    overflow: hidden;
    border-right: 3px solid var(--be-blue);
    white-space: nowrap;
    animation: typing 2s steps(15) 0.5s forwards, blink 0.75s step-end infinite;
    width: 0;
    display: inline-block;
}

@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blink {
    50% { border-color: transparent; }
}

[data-theme="dark"] #typewriter-title { border-color: var(--be-golden); }

/* ========================================
    访问量计数器
    ======================================== */
.visitor-counter {
    margin-top: 30px;
    font-size: 1.2rem;
    color: #fff;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.75);
    opacity: 0.9;
}

.visitor-counter span {
    font-weight: bold;
    color: var(--be-golden);
    text-shadow: 0 0 10px var(--be-golden);
}

/* ========================================
    动画效果
    ======================================== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.post-item { animation: fadeIn 0.5s ease; }
.widget { animation: fadeIn 0.5s ease; }

/* ========================================
    新内核增强（Chrome 84+）
    ======================================== */

/* 毛玻璃效果 */
@supports (backdrop-filter: blur(10px)) or (-webkit-backdrop-filter: blur(10px)) {
    .header {
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }

    #navbar:hover {
        backdrop-filter: blur(15px);
    }

    #navbar ul {
        backdrop-filter: blur(10px);
    }

    .btn {
        backdrop-filter: blur(10px);
    }
}

/* CSS Grid 布局 */
@supports (display: grid) {
    .projects-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
        margin: 0;
    }

    .project-card {
        flex: none;
        margin: 0;
    }

    .footer-main {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 30px;
    }

    .footer-col {
        flex: none;
        padding-right: 0;
    }
}

/* Flexbox gap */
@supports (gap: 10px) {
    .logo { gap: 10px; }
    .logo > * + * { margin-left: 0; }

    .nav-menu { gap: 25px; }
    .nav-menu > * { margin-left: 0; }

    .main-container { gap: 20px; }
    .main-container > * + * { margin-left: 0; }

    .post-list { gap: 20px; }
    .post-list > * + * { margin-top: 0; }

    .post-meta { gap: 20px; }
    .post-meta > * { margin-left: 0; }

    .post-meta span { gap: 5px; }
    .post-meta span > * + * { margin-left: 0; }

    .about-content { gap: 30px; }
    .about-content > * + * { margin-left: 0; }

    .social-links { gap: 15px; }
    .social-links > * { margin-right: 0; }

    .profile { gap: 50px; }
    .profile > * + * { margin-left: 0; }

    .widget-title { gap: 10px; }
    .widget-title::before { margin-right: 0; }

    .tag-cloud { gap: 8px; }
    .tag-cloud a { margin-right: 0; margin-bottom: 0; }

    .friend-links-title { gap: 10px; }
    .friend-links-title > * + * { margin-left: 0; }

    .links-list { gap: 10px; }
    .links-list a { margin-right: 0; margin-bottom: 0; }

    .category-nav { gap: 15px; }
    .category-nav > * { margin-right: 0; }
}