#loading-screen {
    position: fixed;
    inset: 0;
    background: #fff;
    z-index: 99999;
    display: grid;
    place-items: center;
    transition: opacity .4s, visibility .4s;
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    width: 40px;
    height: 40px;
    border: 3px solid #000;
    border-top: 3px solid transparent;
    animation: load 1.2s infinite;
}

@keyframes load {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

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

/* 基础样式 - 使用流体字体 */
html {
    font-size: clamp(14px, 0.8vw + 12px, 18px);
}

body {
    font-family: 'SF Mono', Monaco, monospace;
    line-height: 1.6;
    color: #ffffff;
    background-color: #000000;
    overflow-x: hidden;
    background-image:
        repeating-linear-gradient(0deg, rgba(255,255,255,0.05) 0px, transparent 1px, transparent 2px, rgba(255,255,255,0.05) 3px),
        repeating-linear-gradient(90deg, rgba(255,255,255,0.05) 0px, transparent 1px, transparent 2px, rgba(255,255,255,0.05) 3px);
    background-size: 20px 20px, 20px 20px;
}

/* 页面内容默认隐藏，加载完成后显示 */
.navbar,
.hero,
.section,
.footer {
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
}

body.loaded .navbar,
body.loaded .hero,
body.loaded .section,
body.loaded .footer {
    opacity: 1;
}

/* 容器样式 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 1.25rem 0;
    border-bottom: 3px solid #ffffff;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 滚动时导航栏效果 */
.navbar.scrolled {
    padding: 1rem 0;
    background-color: rgba(0, 0, 0, 0.98);
    border-bottom: 2px solid #ffffff;
}

/* 滚动时的body样式 */
body.scrolling {
    overflow: hidden;
}

/* 菜单打开时的body样式 */
body.menu-open {
    overflow: hidden;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand a {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    text-decoration: none;
    transition: all 0.3s ease;
    font-family: 'SF Mono', Monaco, monospace;
    letter-spacing: 3px;
    text-transform: uppercase;
    background: linear-gradient(135deg, #ffffff 0%, #888888 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-brand a:hover {
    transform: translateY(-2px);
}

/* 导航菜单样式 */
.navbar-menu {
    display: flex;
    gap: 2rem;
    transition: all 0.3s ease;
}

.navbar-menu a {
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    text-decoration: none;
    transition: all 0.2s ease;
    font-family: 'SF Mono', Monaco, monospace;
    letter-spacing: 2px;
    text-transform: uppercase;
    position: relative;
    padding: 0.5rem 0;
    border-left: 3px solid #666;
    padding-left: 20px;
}

.navbar-menu a:hover {
    color: #ffffff;
    border-left-color: #ffffff;
    padding-left: 25px;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

/* 汉堡菜单 - 侧边栏设计 */
.menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    position: relative;
    cursor: pointer;
    z-index: 1002;
    background: none;
    border: none;
    padding: 0;
}

.menu-btn__lines {
    width: 20px;
    height: 14px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.menu-btn__line {
    display: block;
    width: 100%;
    height: 1.5px;
    background: #ffffff;
    position: absolute;
    left: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 5px rgba(255, 255, 255, 0.5);
}

.menu-btn__line:nth-child(1) {
    top: 0;
}

.menu-btn__line:nth-child(2) {
    top: 50%;
    transform: translateY(-50%);
}

.menu-btn__line:nth-child(3) {
    bottom: 0;
}

/* 汉堡菜单动画 */
.menu-btn.active .menu-btn__line:nth-child(1) {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}

.menu-btn.active .menu-btn__line:nth-child(2) {
    opacity: 0;
    transform: translateY(-50%) scaleX(0);
}

.menu-btn.active .menu-btn__line:nth-child(3) {
    bottom: 50%;
    transform: translateY(50%) rotate(-45deg);
}

/* 遮罩层 */
.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
    z-index: 1000;
}

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

/* 英雄区域样式 - 优化 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: #000000;
    padding: 100px 2rem 4rem;
    position: relative;
    overflow: hidden;
    border-bottom: 3px solid #ffffff;
}

.hero .container {
    position: relative;
    z-index: 1;
    max-width: 1000px;
    margin: 0 auto;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 15px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease forwards 0.3s;
    font-family: 'SF Mono', Monaco, monospace;
    letter-spacing: 3px;
    text-transform: uppercase;
    background: linear-gradient(135deg, #ffffff 0%, #888888 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .status {
    color: #888;
    font-size: clamp(0.875rem, 1.5vw, 1.25rem);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 2rem;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease forwards 0.6s;
}

.hero .status-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: #fff;
    border-radius: 50%;
    margin-right: 8px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* 淡入动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 打字机动画 */
@keyframes typing {
    from { width: 0 }
    to { width: 100% }
}

@keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: #ffffff; }
}

/* 区块样式 - 优化 */
.section {
    padding: 8rem 0;
    background: #000000;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border-bottom: 2px solid #444;
}

.section.animate {
    opacity: 1;
    transform: translateY(0);
}

.section:nth-child(odd) {
    background: #000000;
}

.section h2 {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 30px;
    color: #ffffff;
    text-align: center;
    position: relative;
    font-family: 'SF Mono', Monaco, monospace;
    letter-spacing: 3px;
    text-transform: uppercase;
    background: linear-gradient(135deg, #ffffff 0%, #888888 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 内容样式 */
.content {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    background: #0a0a0a;
    border: 2px solid #ffffff;
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
    clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 0 100%);
}

.content p {
    font-size: clamp(0.95rem, 1.2vw, 1.125rem);
    line-height: 1.8;
    margin-bottom: 2rem;
    color: #ffffff;
    font-family: 'SF Mono', Monaco, monospace;
    letter-spacing: 0.5px;
}

/* 区块网格背景 */
.section .grid-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

/* 技能网格样式 - 优化 */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
    margin-top: 4rem;
    position: relative;
    z-index: 1;
}

.skill-item {
    padding: 35px;
    background: #0a0a0a;
    border: 2px solid #666;
    text-align: left;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.skill-item:hover {
    border-color: #ffffff;
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.2);
    transform: translateX(5px);
}

.skill-item h3 {
    font-size: clamp(1.125rem, 1.8vw, 1.5rem);
    font-weight: 600;
    margin-bottom: 1rem;
    color: #fff;
    font-family: 'SF Mono', Monaco, monospace;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.skill-item h4 {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    font-weight: 500;
    margin-bottom: 1rem;
    color: #fff;
    font-family: 'SF Mono', Monaco, monospace;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.skill-item p {
    font-size: clamp(0.85rem, 1.1vw, 1rem);
    line-height: 1.8;
    margin-bottom: 1rem;
    color: #cccccc;
    font-family: 'SF Mono', Monaco, monospace;
    letter-spacing: 0.5px;
}

.skill-item ul {
    list-style: none;
    margin: 1rem 0 1.5rem 0;
    text-align: left;
    padding-left: 20px;
}

.skill-item li {
    margin-bottom: 0.75rem;
    color: #cccccc;
    line-height: 1.6;
    font-family: 'SF Mono', Monaco, monospace;
    letter-spacing: 0.3px;
    border-left: 3px solid #666;
    padding-left: 15px;
    transition: all 0.2s ease;
}

.skill-item li:hover {
    border-left-color: #ffffff;
    padding-left: 20px;
    color: #ffffff;
}

/* 页脚样式 - 优化 */
.footer {
    padding: 8rem 0 4rem;
    background: #000000;
    color: #ffffff;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-top: 3px solid #ffffff;
}

.footer .container {
    position: relative;
    z-index: 1;
    max-width: 1000px;
    margin: 0 auto;
}

.footer h2 {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 30px;
    color: #ffffff;
    font-family: 'SF Mono', Monaco, monospace;
    letter-spacing: 3px;
    text-transform: uppercase;
    background: linear-gradient(135deg, #ffffff 0%, #888888 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer p {
    font-size: clamp(0.9rem, 1.3vw, 1.125rem);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: #ffffff;
    font-family: 'SF Mono', Monaco, monospace;
    letter-spacing: 0.5px;
}

.copyright {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 2px solid #666;
    color: #888;
    font-size: 0.85rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* 备案号超链接样式 */
.copyright a {
    color: #aaa;
    text-decoration: none;
    transition: all 0.3s ease;
}

.copyright a:hover {
    color: #ffffff;
    text-decoration: underline;
}

/* RISE.L.net 相关样式 */
.content h3 {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
    font-weight: 600;
    margin: 3rem 0 1.5rem;
    color: #fff;
    font-family: 'SF Mono', Monaco, monospace;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.content h4 {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    font-weight: 500;
    margin-bottom: 1rem;
    color: #fff;
    font-family: 'SF Mono', Monaco, monospace;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.content ul {
    list-style: none;
    margin: 1.5rem 0 2rem 0;
    padding-left: 20px;
}

.content li {
    margin-bottom: 0.75rem;
    color: #cccccc;
    line-height: 1.6;
    font-family: 'SF Mono', Monaco, monospace;
    letter-spacing: 0.3px;
    border-left: 3px solid #666;
    padding-left: 15px;
    transition: all 0.2s ease;
}

.content li:hover {
    border-left-color: #ffffff;
    padding-left: 20px;
    color: #ffffff;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    margin-right: 1rem;
    margin-bottom: 1rem;
    background-color: #000000;
    color: #ffffff;
    text-decoration: none;
    border: 2px solid #ffffff;
    font-weight: 500;
    transition: all 0.3s ease;
    font-family: 'SF Mono', Monaco, monospace;
    letter-spacing: 2px;
    text-transform: uppercase;
    clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
}

.btn:hover {
    background-color: #ffffff;
    color: #000000;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
    transform: translateX(5px);
}

/* 资源链接容器 */
.resources {
    margin-top: 2rem;
}

/* 代码示例样式 */
pre {
    background-color: #000000;
    border: 2px solid #666;
    padding: 35px;
    margin: 1.5rem 0;
    overflow-x: auto;
    font-family: 'SF Mono', Monaco, monospace;
    font-size: clamp(0.8rem, 1vw, 0.9rem);
    line-height: 1.7;
    min-height: 220px;
    transition: all 0.3s ease;
    position: relative;
    text-align: left;
    clip-path: polygon(0 0, calc(100% - 15px) 0, 100% 15px, 100% 100%, 0 100%);
}

code {
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 0.9rem;
    color: #cccccc;
    display: block;
    white-space: pre;
    text-align: left;
}

/* 代码语言标注 */
pre::before {
    content: "// PYTHON CODE";
    display: block;
    font-size: 0.7rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    position: absolute;
    top: 0.75rem;
    left: 2rem;
    border-left: 3px solid #ffffff;
    padding-left: 10px;
}

/* 代码内容容器 */
pre code {
    margin-top: 1.5rem;
}

/* Python 语法高亮 */
code .keyword {
    color: #ffffff;
    font-weight: 600;
}

code .string {
    color: #aaa;
}

code .comment {
    color: #666;
    font-style: italic;
}

code .function {
    color: #ffffff;
    font-weight: 500;
}

code .class {
    color: #ffffff;
    font-weight: 600;
}

code .operator {
    color: #999;
}

code .number {
    color: #ccc;
}

/* 技能项样式调整 */
.skill-item {
    min-height: 380px;
    display: flex;
    flex-direction: column;
}


.skill-item pre {
    flex: 1;
    min-height: 200px;
    background: #000000;
    border: 2px solid #666;
}

/* 响应式调整 */
@media (max-width: 767px) {
    .btn {
        display: block;
        width: 100%;
        text-align: center;
        margin-right: 0;
        clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
    }

    .content {
        clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
        border: 1px solid #ffffff;
        padding: 20px;
    }

    .content ul {
        margin-left: 1rem;
        padding-left: 10px;
    }

    pre {
        font-size: 0.7rem;
        padding: 1.25rem;
        min-height: 150px;
        clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
        border: 1px solid #666;
    }

    pre::before {
        font-size: 0.65rem;
        margin-bottom: 0.75rem;
        top: 0.5rem;
        left: 1.25rem;
    }

    pre code {
        margin-top: 1rem;
        font-size: 0.75rem;
    }

    .skill-item {
        min-height: auto;
        padding: 20px;
        clip-path: polygon(0 0, calc(100% - 15px) 0, 100% 15px, 100% 100%, 0 100%);
        border: 1px solid #666;
    }

    .skill-item pre {
        min-height: 120px;
        border: 1px solid #666;
    }
}

/* 响应式设计 - 大屏幕 (1200px+) */
@media (min-width: 1200px) {
    .container {
        max-width: 1600px;
        padding: 0 4rem;
    }

    .hero h1 {
        font-size: 5rem;
    }

    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 4rem;
    }

    .content {
        max-width: 1400px;
        padding: 50px;
    }
}

/* 中等屏幕 (992px - 1199px) */
@media (max-width: 1199px) {
    .container {
        max-width: 1100px;
        padding: 0 2.5rem;
    }

    .hero h1 {
        font-size: 3.5rem;
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: 3rem;
    }

    .content {
        max-width: 1000px;
        padding: 35px;
    }

    .skill-item {
        padding: 30px;
    }
}

/* 平板 (768px - 991px) */
@media (max-width: 991px) {
    .container {
        max-width: 100%;
        padding: 0 2rem;
    }

    .navbar {
        padding: 1.25rem 0;
        border-bottom: 2px solid #ffffff;
    }

    .navbar-brand a {
        font-size: 1.25rem;
    }

    .navbar-menu {
        gap: 1.5rem;
    }

    .navbar-menu a {
        font-size: 0.9rem;
    }

    .hero {
        padding-top: 60px;
        border-bottom: 2px solid #ffffff;
    }

    .hero h1 {
        font-size: 3rem;
    }

    .hero .typed-subtext {
        font-size: 1.1rem;
    }

    .section {
        padding: 6rem 0;
        border-bottom: 1px solid #444;
    }

    .section h2 {
        font-size: 2.25rem;
        margin-bottom: 3rem;
    }

    .skills-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        margin-top: 3rem;
    }

    .skill-item {
        padding: 25px;
        clip-path: polygon(0 0, calc(100% - 15px) 0, 100% 15px, 100% 100%, 0 100%);
        border: 1px solid #666;
        min-height: auto;
    }

    .skill-item pre {
        border: 1px solid #666;
        min-height: 150px;
    }

    .content {
        padding: 30px;
        max-width: 100%;
        clip-path: polygon(0 0, calc(100% - 25px) 0, 100% 25px, 100% 100%, 0 100%);
        border: 1px solid #ffffff;
    }

    .content p {
        font-size: 1.05rem;
    }

    pre {
        padding: 25px;
        min-height: 180px;
    }

    .footer {
        padding: 6rem 0;
        border-top: 2px solid #ffffff;
    }

    .footer h2 {
        font-size: 2.25rem;
    }
}

/* 手机 (576px - 767px) */
@media (max-width: 767px) {
    .container {
        padding: 0 1.25rem;
    }

    .navbar {
        border-bottom: 2px solid #ffffff;
    }

    .navbar-menu {
        position: fixed;
        top: 0;
        right: 0;
        width: 75vw;
        max-width: 300px;
        height: 100vh;
        background-color: #000000;
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        gap: 0;
        padding: 100px 1.5rem 2rem;
        opacity: 1;
        visibility: visible;
        transform: translateX(100%);
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: -5px 0 30px rgba(255, 255, 255, 0.3);
        z-index: 1001;
        border-left: 2px solid #ffffff;
    }

    .navbar-menu.active {
        transform: translateX(0);
    }

    .navbar-menu a {
        font-size: 0.9rem;
        font-weight: 400;
        letter-spacing: 0.02em;
        opacity: 1;
        transform: none;
        transition: all 0.3s ease;
        padding: 0.875rem 0;
        padding-left: 15px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.2);
        width: 100%;
        color: #ffffff;
        border-left: 2px solid #666;
    }

    .navbar-menu a:last-child {
        border-bottom: none;
    }

    .navbar-menu a::after {
        display: none;
    }

    .navbar-menu a:hover {
        transform: translateX(5px);
        color: #ffffff;
        text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
        border-left-color: #ffffff;
        padding-left: 18px;
    }

    .menu-btn {
        display: block;
    }

    .hero {
        padding-top: 80px;
        min-height: 100vh;
        height: auto;
        padding-bottom: 3rem;
        border-bottom: 2px solid #ffffff;
    }

    .hero h1 {
        margin-bottom: 1.5rem;
    }

    .section {
        padding: 3.5rem 0;
        border-bottom: 1px solid #444;
    }

    .section h2 {
        margin-bottom: 2rem;
    }

    .section .grid-bg {
        background-size: 30px 30px;
    }

    .skills-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-top: 2rem;
    }

    .skill-item {
        padding: 20px;
        min-height: auto;
    }

    .skill-item h3 {
        margin-bottom: 0.875rem;
        font-size: 1rem;
    }

    .skill-item h4 {
        font-size: 0.95rem;
        margin-bottom: 0.875rem;
    }

    .content {
        padding: 20px;
    }

    .content p {
        margin-bottom: 1.25rem;
        font-size: 0.95rem;
    }

    .content h3 {
        font-size: 1.1rem;
        margin: 2rem 0 1rem;
    }

    .content h4 {
        font-size: 1rem;
    }

    .footer {
        padding: 3.5rem 0 2rem;
        border-top: 2px solid #ffffff;
    }

    .footer h2 {
        margin-bottom: 1.5rem;
    }

    /* 优化移动端代码块显示 */
    pre {
        padding: 20px;
        min-height: 160px;
    }

    pre::before {
        font-size: 0.65rem;
        margin-bottom: 0.75rem;
        top: 0.75rem;
        left: 1.25rem;
    }

    pre code {
        margin-top: 1rem;
        font-size: 0.75rem;
    }

    /* 优化移动端按钮显示 */
    .btn {
        display: block;
        width: 100%;
        text-align: center;
        margin-right: 0;
        margin-bottom: 1rem;
        clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
    }

    /* 优化移动端列表显示 */
    .content ul {
        margin-left: 0.5rem;
        padding-left: 15px;
    }

    .content li {
        font-size: 0.9rem;
        border-left: 2px solid #666;
        padding-left: 12px;
    }

    .content li:hover {
        padding-left: 15px;
    }
}

/* 小手机 (480px - 575px) */
@media (max-width: 575px) {
    .container {
        padding: 0 0.875rem;
    }

    .navbar {
        padding: 1rem 0;
        border-bottom: 1px solid #ffffff;
    }

    .navbar-menu {
        width: 85vw;
        padding: 100px 1.25rem 2rem;
    }

    .hero {
        padding-top: 70px;
    }

    .section {
        padding: 2.5rem 0;
    }

    .content {
        padding: 1rem;
        clip-path: polygon(0 0, calc(100% - 15px) 0, 100% 15px, 100% 100%, 0 100%);
    }

    .skill-item {
        padding: 1rem;
        clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
    }

    pre {
        padding: 1rem;
        min-height: 120px;
        clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
    }

    pre::before {
        font-size: 0.6rem;
        left: 1rem;
        top: 0.5rem;
    }

    pre code {
        font-size: 0.7rem;
    }

    .btn {
        clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 0 100%);
    }
}

/* 超小屏幕 (320px - 479px) */
@media (max-width: 479px) {
    .container {
        padding: 0 0.75rem;
    }

    .navbar-brand a {
        font-size: 1.1rem;
        letter-spacing: 2px;
    }

    .navbar-menu {
        width: 90vw;
        padding: 80px 1rem 2rem;
    }

    .navbar-menu a {
        font-size: 0.85rem;
        padding: 0.75rem 0;
        padding-left: 12px;
    }

    .hero {
        padding-top: 60px;
    }

    .section {
        padding: 2rem 0;
    }

    .section h2 {
        margin-bottom: 1.5rem;
        font-size: 1.5rem;
    }

    .section .grid-bg {
        background-size: 20px 20px;
    }

    .content {
        padding: 0.875rem;
        clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
    }

    .content p {
        line-height: 1.7;
        font-size: 0.9rem;
    }

    .content h3 {
        font-size: 1rem;
        margin: 1.5rem 0 0.875rem;
    }

    .content h4 {
        font-size: 0.9rem;
    }

    .skill-item {
        padding: 0.875rem;
    }

    .skill-item h4 {
        font-size: 0.9rem;
    }

    .skill-item p, .skill-item li {
        font-size: 0.85rem;
    }

    pre {
        padding: 0.875rem;
        min-height: 100px;
    }

    pre::before {
        font-size: 0.55rem;
        left: 0.875rem;
    }

    pre code {
        font-size: 0.65rem;
        margin-top: 0.875rem;
    }

    .footer {
        padding: 2.5rem 0 1.5rem;
    }

    .footer h2 {
        font-size: 1.5rem;
    }

    .footer p {
        font-size: 0.875rem;
    }

    .copyright {
        margin-top: 2rem;
        padding-top: 1.25rem;
        font-size: 0.75rem;
        border-top: 1px solid #666;
    }
}

/* 横屏手机 */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 100px 0 3rem;
    }

    .navbar {
        padding: 0.75rem 0;
    }

    .section {
        padding: 3rem 0;
    }
}

/* 针对极小屏幕的内容溢出修复 */
@media (max-width: 360px) {
    html {
        font-size: 13px;
    }

    .navbar-brand a {
        font-size: 1rem;
        letter-spacing: 1.5px;
    }

    .content, .skill-item {
        overflow-x: hidden;
    }

    pre {
        font-size: 0.6rem;
        padding: 0.75rem;
    }

    code {
        font-size: 0.6rem;
    }
}