:root {
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --secondary: #ec4899;
    --secondary-light: #f472b6;
    --accent: #06b6d4;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --light: #f8fafc;
    --lighter: #ffffff;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --card-bg: rgba(255, 255, 255, 0.1);
    --text-color: #0f172a;
    --text-light: #475569;
    --shadow-color: rgba(99, 102, 241, 0.2);
    --shadow-dark: rgba(0, 0, 0, 0.15);
    --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    --border-radius: 20px;
    --glass-bg: rgba(255, 255, 255, 0.15);
    --glass-border: rgba(255, 255, 255, 0.25);
    --blur-amount: 20px;
    --highlight-bg: #ffeb3b;
    --highlight-txt: #000;
}

[data-theme="dark"] {
    --primary: #818cf8;
    --primary-light: #a5b4fc;
    --primary-dark: #6366f1;
    --secondary: #f472b6;
    --secondary-light: #f9a8d4;
    --accent: #22d3ee;
    --dark: #f8fafc;
    --dark-light: #e2e8f0;
    --light: #0f172a;
    --lighter: #1e293b;
    --gray: #94a3b8;
    --gray-light: #cbd5e1;
    --card-bg: rgba(30, 41, 59, 0.4);
    --text-color: #f8fafc;
    --text-light: #cbd5e1;
    --shadow-color: rgba(0, 0, 0, 0.4);
    --shadow-dark: rgba(0, 0, 0, 0.5);
    --glass-bg: rgba(0, 0, 0, 0.25);
    --glass-border: rgba(255, 255, 255, 0.15);
    --highlight-bg: #ffd700;
    --highlight-txt: #000;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: linear-gradient(135deg, #e0e7ff 0%, #f0f9ff 100%);
    min-height: 100vh;
    font-family: 'Inter', sans-serif;
    color: var(--text-color);
    transition: var(--transition);
    position: relative;
    overflow-x: hidden;
}

[data-theme="dark"] body {
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #312e81 100%);
}

/* 液态玻璃背景效果 */
.liquid-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    overflow: hidden;
}

.liquid-shape {
    position: absolute;
    filter: blur(60px);
    opacity: 0.6;
    border-radius: 50%;
    animation: liquidMove 20s infinite alternate ease-in-out;
}

.liquid-shape:nth-child(1) {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    width: 500px;
    height: 500px;
    top: -250px;
    left: -100px;
    animation-delay: 0s;
}

.liquid-shape:nth-child(2) {
    background: linear-gradient(135deg, var(--secondary-light) 0%, var(--secondary) 100%);
    width: 600px;
    height: 600px;
    bottom: -300px;
    right: -150px;
    animation-delay: -5s;
}

.liquid-shape:nth-child(3) {
    background: linear-gradient(135deg, var(--accent) 0%, #3b82f6 100%);
    width: 400px;
    height: 400px;
    top: 50%;
    left: 30%;
    animation-delay: -10s;
}

@keyframes liquidMove {
    0% {
        transform: translate(0, 0) rotate(0deg) scale(1);
    }

    50% {
        transform: translate(40px, 50px) rotate(180deg) scale(1.1);
    }

    100% {
        transform: translate(-30px, 20px) rotate(360deg) scale(0.9);
    }
}

/* 粒子效果 */
.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 50%;
    animation: float 20s infinite linear;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
}

[data-theme="dark"] .particle {
    background: rgba(255, 255, 255, 0.5);
    box-shadow: 0 0 10px rgba(129, 140, 248, 0.5);
}

@keyframes float {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }

    10% {
        opacity: 1;
    }

    90% {
        opacity: 1;
    }

    100% {
        transform: translateY(-100vh) translateX(100px);
        opacity: 0;
    }
}

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

/* Header & Navigation */
header {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    transition: var(--transition);
    background: transparent;
    padding: 20px 0;
}

header.sticky {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border-bottom: 1px solid var(--glass-border);
    padding: 15px 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-glow {
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 50%;
    filter: blur(10px);
    opacity: 0.7;
    z-index: 0;
}

.logo-img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary);
    position: relative;
    z-index: 1;
    transition: var(--transition);
}

.logo-wrapper:hover .logo-img {
    transform: scale(1.1);
    border-color: var(--secondary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    font-weight: 600;
    color: var(--text-color);
    position: relative;
    transition: var(--transition);
    font-size: 16px;
    font-family: 'Space Grotesk', sans-serif;
}

.nav-links a::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    transition: var(--transition);
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1002;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    transition: var(--transition);
    border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input {
    width: 200px;
    padding: 10px 40px 10px 16px;
    border-radius: 25px;
    border: 1.5px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--text-color);
    font-size: 14px;
    transition: var(--transition);
    outline: none;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-box i {
    position: absolute;
    right: 16px;
    color: var(--text-light);
    font-size: 16px;
    pointer-events: none;
}

.theme-toggle {
    border: none;
    background: var(--glass-bg);
    color: var(--text-color);
    font-size: 18px;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
}

.theme-toggle:hover {
    background: var(--primary);
    color: white;
    transform: rotate(15deg);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    position: relative;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%);
    opacity: 0.1;
    z-index: -1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    animation: fadeInUp 1s ease-out;
}

.hero-badge {
    display: inline-block;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 8px 16px;
    border-radius: 20px;
    margin-bottom: 20px;
}

.hero-badge span {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 600;
    font-size: 14px;
}

.hero-text h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: var(--text-light);
    line-height: 1.6;
    max-width: 500px;
}

.hero-actions {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 16px;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: var(--text-color);
}

.btn-secondary:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

.hero-stats {
    display: flex;
    gap: 30px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-family: 'Space Grotesk', sans-serif;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
}

.hero-image {
    position: relative;
    animation: fadeInRight 1s ease-out;
}

.image-frame {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 0 auto;
}

.image-glow {
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 50%;
    filter: blur(20px);
    opacity: 0.3;
    z-index: 0;
}

.image-frame img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    position: relative;
    z-index: 1;
    border: 4px solid var(--glass-border);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-element {
    position: absolute;
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 50%;
    animation: floatElement 6s infinite ease-in-out;
}

.floating-element:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    top: 60%;
    right: 10%;
    animation-delay: -2s;
}

.floating-element:nth-child(3) {
    bottom: 20%;
    left: 20%;
    animation-delay: -4s;
}

@keyframes floatElement {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.7;
    }

    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

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

/* Sections */
section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--text-color);
    position: relative;
    display: inline-block;
    margin-bottom: 15px;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
}

.section-title h2::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 2px;
}

.section-title p {
    color: var(--text-light);
    max-width: 600px;
    margin: 20px auto 0;
    font-size: 1.1rem;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-badge {
    display: inline-block;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 6px 12px;
    border-radius: 15px;
    margin-bottom: 20px;
}

.about-badge span {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 600;
    font-size: 12px;
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--text-color);
    font-family: 'Space Grotesk', sans-serif;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.7;
}

.about-features {
    display: flex;
    gap: 20px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.feature {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 10px 16px;
    border-radius: 15px;
    font-size: 14px;
    font-weight: 500;
}

.feature i {
    color: var(--primary);
}

.image-container {
    position: relative;
    max-width: 400px;
    margin: 0 auto;
}

.image-container .image-glow {
    border-radius: 20px;
}

.image-container img {
    width: 100%;
    border-radius: 20px;
    object-fit: cover;
    position: relative;
    z-index: 1;
    border: 1px solid var(--glass-border);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

/* Skills Section */
.skills {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
}

.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.skill-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    box-shadow: 0 10px 30px var(--shadow-color);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--glass-border);
}

.skill-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    transition: var(--transition);
}

.skill-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px var(--shadow-color);
}

.skill-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    transition: var(--transition);
}

.skill-card:hover .skill-icon {
    transform: scale(1.1);
}

.skill-card h3 {
    margin-bottom: 15px;
    color: var(--text-color);
    font-family: 'Space Grotesk', sans-serif;
}

.skill-card p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.skill-progress {
    width: 100%;
    height: 6px;
    background: var(--glass-bg);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 3px;
    transition: width 1s ease-in-out;
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-badge {
    display: inline-block;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 6px 12px;
    border-radius: 15px;
    margin-bottom: 20px;
}

.contact-badge span {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 600;
    font-size: 12px;
}

.contact-info h3 {
    font-size: 2rem;
    margin-bottom: 30px;
    color: var(--text-color);
    font-family: 'Space Grotesk', sans-serif;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.contact-text span:first-child {
    font-weight: 600;
    color: var(--text-color);
    font-size: 14px;
}

.contact-text a,
.contact-text span:last-child {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

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

.contact-form {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--border-radius);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--glass-border);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 20px;
    border: 1.5px solid var(--glass-border);
    border-radius: 12px;
    background: var(--glass-bg);
    color: var(--text-color);
    font-size: 16px;
    transition: var(--transition);
    outline: none;
    resize: vertical;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Footer */
footer {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border-top: 1px solid var(--glass-border);
    padding: 60px 0 20px;
    margin-top: 60px;
}

.footer-main {
    display: flex;
    flex-direction: column;
    gap: 40px;
    padding-bottom: 40px;
}

/* 改进的页脚布局 */
.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 80px;
    align-items: start;
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.footer-logo img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary);
}

.footer-text h3 {
    color: var(--text-color);
    font-family: 'Space Grotesk', sans-serif;
    margin-bottom: 5px;
}

.footer-text p {
    color: var(--text-light);
    font-size: 14px;
}

.footer-description {
    color: var(--text-light);
    line-height: 1.6;
    max-width: 400px;
}

/* 改进的页脚链接布局 */
.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.links-column {
    display: flex;
    flex-direction: column;
}

.links-column h4 {
    color: var(--text-color);
    margin-bottom: 25px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    position: relative;
    padding-bottom: 10px;
}

.links-column h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 1px;
}

.links-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.links-column li {
    margin: 0;
    transition: var(--transition);
}

.links-column a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 6px 0;
    display: block;
    position: relative;
    border-radius: 6px;
    padding-left: 12px;
}

.links-column a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 2px;
    transition: var(--transition);
}

.links-column a:hover {
    color: var(--primary);
    padding-left: 16px;
    background: var(--glass-bg);
}

.links-column a:hover::before {
    height: 16px;
}

.social-links {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
    font-size: 1.2rem;
}

.social-link:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-5px);
}

.footer-bottom {
    padding: 25px 0 0;
    text-align: center;
    border-top: 1px solid var(--glass-border);
}

.footer-bottom p {
    margin: 0;
    color: var(--text-light);
    font-size: 0.95rem;
}

.footer-bottom b {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 600;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 999;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    cursor: pointer;
}

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

.back-to-top:hover {
    background: var(--secondary);
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(99, 102, 241, 0.4);
}

.back-to-top i {
    font-size: 18px;
    transition: transform 0.3s ease;
    transform: translateY(0);
}

.back-to-top:hover i {
    transform: translateY(-2px);
    color: white;
}

/* Mobile Navigation - 修复滚动问题 */
.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1001;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    transform: translateX(-100%);
    transition: transform 0.4s ease;
    padding: 80px 20px 20px;
    text-align: center;
    overflow-y: auto;
}

.mobile-nav.active {
    transform: translateX(0);
}

.mobile-nav-close {
    position: fixed;
    top: 20px;
    right: 20px;
    font-size: 24px;
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    z-index: 1003;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    border-radius: 50%;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
}

.mobile-nav-close:hover {
    transform: rotate(90deg);
    background: var(--primary);
    color: white;
}

.mobile-menu {
    width: 100%;
    max-width: 320px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.nav-links-container {
    width: 100%;
}

.nav-links-container ul {
    list-style: none;
    padding: 0;
    margin: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.nav-links-container li {
    margin: 0;
    width: 100%;
    display: flex;
    justify-content: center;
}

.nav-links-container a {
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 15px 0;
    color: var(--text-color);
    font-weight: 600;
    font-size: 1.2rem;
    transition: var(--transition);
    border-radius: 12px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    width: 100%;
    max-width: 280px;
    min-height: 60px;
}

.nav-links-container a:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

.mobile-nav-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    width: 100%;
    max-width: 280px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--glass-border);
}

.mobile-search-box {
    width: 100%;
    display: flex;
    align-items: center;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 25px;
    padding: 12px 20px;
    transition: var(--transition);
    min-height: 50px;
}

.mobile-search-box:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.mobile-search-input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-color);
    font-size: 16px;
    outline: none;
}

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

.mobile-search-box i {
    color: var(--text-light);
    margin-left: 10px;
    font-size: 18px;
}

.action-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    width: 100%;
}

.mobile-theme-toggle {
    border: none;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: var(--text-color);
    font-size: 20px;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-theme-toggle:hover {
    background: var(--primary);
    color: white;
    transform: scale(1.1);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .footer-content {
        gap: 60px;
    }

    .footer-links {
        gap: 30px;
    }
}

@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

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

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }

    .footer-info {
        text-align: center;
        align-items: center;
    }

    .footer-description {
        text-align: center;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
    }

    .nav-actions {
        display: none;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .hero-stats {
        justify-content: center;
    }

    .section-title h2 {
        font-size: 2rem;
    }

    section {
        padding: 80px 0;
    }

    .skills-container {
        grid-template-columns: 1fr;
    }

    .image-frame {
        width: 300px;
        height: 300px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 576px) {
    .hero-text h1 {
        font-size: 2rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 250px;
        justify-content: center;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .section-title h2 {
        font-size: 1.8rem;
    }

    .about-features {
        flex-direction: column;
        align-items: flex-start;
    }

    .contact-form {
        padding: 30px 20px;
    }

    .image-frame {
        width: 250px;
        height: 250px;
    }

    .back-to-top {
        bottom: 15px;
        right: 15px;
        width: 40px;
        height: 40px;
    }

    .back-to-top i {
        font-size: 16px;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }

    .mobile-nav {
        padding: 70px 15px 15px;
    }

    .mobile-menu {
        max-width: 280px;
        gap: 15px;
    }
}

/* Highlight for search */
.highlight {
    background: var(--highlight-bg);
    color: var(--highlight-txt);
    border-radius: 4px;
    padding: 0 4px;
    font-weight: bold;
}

/* 下拉菜单样式 */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 5px;
}

.dropdown-toggle i {
    font-size: 12px;
    transition: var(--transition);
}

.dropdown:hover .dropdown-toggle i {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 10px 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    box-shadow: 0 10px 30px var(--shadow-color);
    z-index: 1000;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    list-style: none;
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: 10px 20px;
    color: var(--text-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.dropdown-menu a:hover {
    background: var(--primary);
    color: white;
}

/* 移动端 Resources 样式 - 修复滚动问题 */
.mobile-resources {
    margin: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.mobile-resources-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    color: var(--text-color);
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    margin: 5px 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 55px;
    width: 100%;
    max-width: 280px;
    box-sizing: border-box;
}

.mobile-resources-header:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.mobile-resources-header i {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 14px;
}

.mobile-resources-header.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.mobile-resources-header.active i {
    transform: rotate(180deg);
}

.mobile-resources-links {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(255, 255, 255, 0.05);
    border-radius: 0 0 12px 12px;
    margin: -5px 0 5px 0;
    padding: 0;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-top: none;
    width: 100%;
    max-width: 280px;
    box-sizing: border-box;
}

.mobile-resources-links.active {
    max-height: 300px;
    overflow-y: auto;
}

.mobile-resources-links li {
    list-style: none;
    margin: 0;
    border-bottom: 1px solid var(--glass-border);
}

.mobile-resources-links li:last-child {
    border-bottom: none;
}

.mobile-resources-links a {
    display: flex;
    align-items: center;
    padding: 14px 20px;
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    width: 100%;
    box-sizing: border-box;
}

.mobile-resources-links a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    transition: width 0.3s ease;
    z-index: -1;
}

.mobile-resources-links a:hover {
    color: white;
    padding-left: 28px;
    background: transparent;
}

.mobile-resources-links a:hover::before {
    width: 100%;
}

.mobile-resources-links a i {
    margin-right: 12px;
    width: 18px;
    text-align: center;
    font-size: 14px;
}

/* 确保移动端菜单整体对齐 */
.mobile-menu {
    width: 100%;
    max-width: 320px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.nav-links-container {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.nav-links-container ul {
    list-style: none;
    padding: 0;
    margin: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.nav-links-container li {
    margin: 0;
    width: 100%;
    display: flex;
    justify-content: center;
}

.nav-links-container a {
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px 0;
    color: var(--text-color);
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 12px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    width: 100%;
    max-width: 280px;
    min-height: 55px;
    box-sizing: border-box;
}

.nav-links-container a:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

/* 响应式调整 */
@media (max-width: 576px) {
    .mobile-resources-header {
        padding: 14px 18px;
        font-size: 1rem;
        min-height: 52px;
    }

    .mobile-resources-links a {
        padding: 12px 18px;
        font-size: 0.9rem;
    }

    .nav-links-container a {
        padding: 14px 0;
        font-size: 1rem;
        min-height: 52px;
    }

    .mobile-menu {
        max-width: 280px;
        gap: 6px;
    }

    .nav-links-container,
    .nav-links-container ul {
        gap: 6px;
    }
}