/* ===== 全局样式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #3b6cd9;
    --primary-dark: #2d57b8;
    --secondary: #5a8be0;
    --accent: #06b6d4;
    --bg-dark: #050818;
    --bg-darker: #02040d;
    --bg-section: #0a1024;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(59, 108, 217, 0.06);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(59, 108, 217, 0.4);
    --gradient-1: linear-gradient(135deg, #3b6cd9 0%, #5a8be0 100%);
    --shadow-glow: 0 0 60px rgba(59, 108, 217, 0.2);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 110px 0;
    position: relative;
}

img {
    max-width: 100%;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    background: rgba(5, 8, 24, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 12px 0;
    background: rgba(5, 8, 24, 0.9);
    border-bottom-color: var(--border);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-mark {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    border-radius: 10px;
    font-size: 20px;
    font-weight: 900;
    color: white;
    box-shadow: 0 4px 20px rgba(79, 124, 255, 0.4);
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-sub {
    font-size: 10px;
    color: var(--text-muted);
    letter-spacing: 1.5px;
    font-weight: 500;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-menu a {
    color: var(--text-secondary);
    font-size: 14.5px;
    font-weight: 500;
    position: relative;
    padding: 4px 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: width 0.3s ease;
    border-radius: 2px;
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* ===== Hero 区域 ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 24px 80px;
    background: var(--bg-dark);
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(59, 108, 217, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 108, 217, 0.06) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: floatOrb 15s ease-in-out infinite;
}

.glow-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(59, 108, 217, 0.5) 0%, transparent 70%);
    top: -200px;
    left: -100px;
}

.glow-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(90, 139, 224, 0.4) 0%, transparent 70%);
    top: 20%;
    right: -100px;
    animation-delay: 5s;
}

.glow-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.3) 0%, transparent 70%);
    bottom: -100px;
    left: 40%;
    animation-delay: 10s;
}

@keyframes floatOrb {
    0%, 100% { transform: translate(0, 0); }
    33% { transform: translate(50px, -30px); }
    66% { transform: translate(-30px, 40px); }
}

.hero-content {
    text-align: center;
    max-width: 920px;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(59, 108, 217, 0.1);
    border: 1px solid rgba(59, 108, 217, 0.3);
    border-radius: 100px;
    color: #b8c8e8;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: #4ade80;
    border-radius: 50%;
    box-shadow: 0 0 10px #4ade80;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: clamp(40px, 7vw, 80px);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 28px;
    letter-spacing: -2px;
}

.title-line {
    display: block;
}

.hero-desc {
    font-size: clamp(15px, 1.8vw, 18px);
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    border-radius: 100px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 10px 30px rgba(79, 124, 255, 0.4);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(79, 124, 255, 0.5);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(79, 124, 255, 0.1);
    border-color: var(--border-hover);
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-num {
    font-size: 36px;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px;
    line-height: 1;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
}

.stat-divider {
    width: 1px;
    height: 36px;
    background: var(--border);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-muted);
    font-size: 12px;
    letter-spacing: 2px;
    cursor: pointer;
    animation: bounceDown 2s ease-in-out infinite;
}

.scroll-arrow {
    width: 20px;
    height: 30px;
    border: 2px solid var(--text-muted);
    border-radius: 10px;
    position: relative;
}

.scroll-arrow::after {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 6px;
    background: var(--text-muted);
    border-radius: 2px;
    animation: scrollDot 1.5s ease-in-out infinite;
}

@keyframes bounceDown {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

@keyframes scrollDot {
    0% { opacity: 1; top: 6px; }
    100% { opacity: 0; top: 18px; }
}

/* ===== 通用 Section Header ===== */
.section-header {
    text-align: center;
    margin-bottom: 72px;
}

.section-tag {
    display: inline-block;
    padding: 5px 14px;
    background: rgba(59, 108, 217, 0.1);
    color: #6b8dd0;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2.5px;
    margin-bottom: 18px;
    border: 1px solid rgba(59, 108, 217, 0.2);
}

.section-title {
    font-size: clamp(32px, 4.5vw, 44px);
    font-weight: 800;
    margin-bottom: 14px;
    letter-spacing: -1px;
    color: var(--text-primary);
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== About 区域 ===== */
.about {
    background: var(--bg-section);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text h3 {
    font-size: 30px;
    font-weight: 700;
    margin-bottom: 24px;
    line-height: 1.4;
    color: var(--text-primary);
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.85;
    font-size: 15px;
}

.about-list {
    list-style: none;
    margin-top: 28px;
}

.about-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 14.5px;
}

.check {
    color: var(--primary);
    font-size: 12px;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-glow);
    position: relative;
    z-index: 1;
}

.image-decoration {
    position: absolute;
    top: -20px;
    right: -20px;
    bottom: 20px;
    left: 20px;
    border: 2px solid var(--primary);
    border-radius: 20px;
    z-index: 0;
    opacity: 0.4;
}

/* ===== Products 区域 ===== */
.products {
    background: var(--bg-dark);
}

.product-showcase {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 64px;
    align-items: center;
}

.product-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-glow);
    border: 1px solid var(--border);
}

.product-info {
    position: relative;
}

.product-tag {
    display: inline-block;
    padding: 5px 14px;
    background: rgba(59, 108, 217, 0.1);
    color: #6b8dd0;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 16px;
    border: 1px solid rgba(59, 108, 217, 0.2);
}

.product-info h3 {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 8px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.product-subtitle {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 20px;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.product-desc {
    color: var(--text-secondary);
    line-height: 1.85;
    margin-bottom: 32px;
    font-size: 15px;
}

.product-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.pf-item {
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    transition: all 0.3s ease;
}

.pf-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-3px);
}

.pf-icon {
    font-size: 28px;
    margin-bottom: 12px;
}

.pf-item h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 6px;
}

.pf-item p {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.6;
}

/* ===== Advantages 区域 ===== */
.advantages {
    background: var(--bg-section);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.advantage-card {
    padding: 32px 26px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 18px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.advantage-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.advantage-card:hover::before {
    transform: scaleX(1);
}

.advantage-num {
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 16px;
    letter-spacing: 1.5px;
}

.advantage-icon {
    font-size: 36px;
    margin-bottom: 18px;
    display: inline-block;
    transition: transform 0.4s ease;
}

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

.advantage-card h3 {
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 12px;
}

.advantage-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 13.5px;
}

/* ===== Partners 区域 ===== */
.partners {
    background: var(--bg-dark);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}

.partner-card {
    padding: 32px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
}

.partner-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateY(-4px);
}

.partner-logo {
    font-size: 22px;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.partner-card p {
    color: var(--text-muted);
    font-size: 13px;
}

.partners-quote {
    max-width: 800px;
    margin: 0 auto;
    padding: 32px 40px;
    background: linear-gradient(135deg, rgba(79, 124, 255, 0.08) 0%, rgba(139, 92, 246, 0.08) 100%);
    border: 1px solid var(--border);
    border-radius: 16px;
    text-align: center;
}

.partners-quote p {
    font-size: 17px;
    font-style: italic;
    color: var(--text-primary);
    line-height: 1.7;
    margin-bottom: 12px;
}

.partners-quote span {
    font-size: 13px;
    color: var(--text-muted);
}

/* ===== Careers 区域 ===== */
.careers {
    background: var(--bg-section);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.careers-content {
    max-width: 1000px;
    margin: 0 auto;
}

.careers-intro {
    text-align: center;
    margin-bottom: 48px;
}

.careers-intro h3 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 16px;
}

.careers-intro p {
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 720px;
    margin: 0 auto;
    font-size: 15px;
}

.jobs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 40px;
}

.job-card {
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.job-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateY(-3px);
}

.job-tag {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(79, 124, 255, 0.15);
    color: #7d9aff;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 600;
    margin-bottom: 14px;
    letter-spacing: 0.5px;
}

.job-card h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
}

.job-location {
    font-size: 13px;
    color: var(--text-muted);
}

.careers-cta {
    text-align: center;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
}

.careers-cta p {
    color: var(--text-secondary);
    font-size: 15px;
}

.careers-cta a {
    color: var(--primary);
    font-weight: 600;
    border-bottom: 1px solid transparent;
}

.careers-cta a:hover {
    border-bottom-color: var(--primary);
}

/* ===== Contact 区域 ===== */
.contact {
    background: var(--bg-dark);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.contact-card {
    padding: 32px 22px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
}

.contact-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateY(-4px);
}

.contact-icon {
    font-size: 32px;
    margin-bottom: 14px;
}

.contact-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
}

.contact-card p {
    color: var(--text-secondary);
    font-size: 13.5px;
    word-break: break-all;
}

.contact-address {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    max-width: 700px;
    margin: 0 auto;
}

.address-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.contact-address h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.contact-address p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-darker);
    padding: 60px 0 24px;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.2fr 2fr;
    gap: 48px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-desc {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.7;
    max-width: 280px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.footer-col a {
    display: block;
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 10px;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 6px;
}

.beian {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.beian a {
    color: var(--text-muted);
    font-size: 13px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color 0.3s ease;
}

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

.beian svg {
    flex-shrink: 0;
}

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

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

/* ===== 响应式 ===== */
@media (max-width: 968px) {
    .about-grid,
    .product-showcase {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .jobs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 80px 0;
    }
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(5, 8, 24, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 100px 40px 40px;
        gap: 22px;
        transition: right 0.3s ease;
        border-left: 1px solid var(--border);
    }
    .nav-menu.active {
        right: 0;
    }
    .nav-toggle {
        display: flex;
        z-index: 1001;
    }
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    .hero-stats {
        gap: 24px;
    }
    .stat-divider {
        display: none;
    }
    .product-features {
        grid-template-columns: 1fr;
    }
    .product-info h3 {
        font-size: 32px;
    }
    .partners-quote {
        padding: 24px;
    }
    .partners-quote p {
        font-size: 15px;
    }
    .footer-links {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .contact-address {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    .hero-title {
        font-size: 36px;
    }
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    .btn {
        width: 100%;
        justify-content: center;
    }
    .advantages-grid,
    .partners-grid,
    .jobs-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-darker);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-1);
    border-radius: 4px;
}

::selection {
    background: var(--primary);
    color: white;
}