/* ===== 基础设置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg: #0a0e27;
    --color-bg-secondary: #0f1535;
    --color-text: #e0e7ff;
    --color-text-light: #8b92b8;
    --color-accent: #00f0ff;
    --color-accent-secondary: #ff00ff;
    --color-accent-tertiary: #00ff88;
    --color-accent-light: rgba(0, 240, 255, 0.1);
    --color-border: rgba(0, 240, 255, 0.2);
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-xxl: 8rem;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', 'Droid Sans Mono', 'Source Code Pro', -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", monospace, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px),
        linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 1;
    animation: grid-flow 20s linear infinite;
}

@keyframes grid-flow {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

/* Tech Background Particles */
.tech-background {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--color-accent);
    border-radius: 50%;
    box-shadow: 0 0 20px var(--color-accent);
    animation: float-particle 20s infinite;
}

.particle:nth-child(1) {
    left: 10%;
    top: 20%;
    animation-delay: 0s;
    animation-duration: 25s;
}

.particle:nth-child(2) {
    left: 80%;
    top: 40%;
    animation-delay: 5s;
    animation-duration: 30s;
    background: var(--color-accent-secondary);
    box-shadow: 0 0 20px var(--color-accent-secondary);
}

.particle:nth-child(3) {
    left: 50%;
    top: 60%;
    animation-delay: 10s;
    animation-duration: 35s;
    background: var(--color-accent-tertiary);
    box-shadow: 0 0 20px var(--color-accent-tertiary);
}

.particle:nth-child(4) {
    left: 30%;
    top: 80%;
    animation-delay: 15s;
    animation-duration: 28s;
}

.particle:nth-child(5) {
    left: 70%;
    top: 10%;
    animation-delay: 8s;
    animation-duration: 32s;
    background: var(--color-accent-secondary);
    box-shadow: 0 0 20px var(--color-accent-secondary);
}

@keyframes float-particle {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.3;
    }
    25% {
        transform: translate(100px, -100px) scale(1.5);
        opacity: 0.6;
    }
    50% {
        transform: translate(-50px, -200px) scale(1);
        opacity: 0.3;
    }
    75% {
        transform: translate(-150px, -100px) scale(1.2);
        opacity: 0.5;
    }
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 2;
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
}

/* ===== 导航栏 ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 39, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    filter: drop-shadow(0 0 10px rgba(0, 240, 255, 0.5));
    transition: filter 0.3s;
}

.logo:hover {
    filter: drop-shadow(0 0 20px rgba(0, 240, 255, 0.8));
}

.logo-img {
    height: 32px;
    width: auto;
    display: block;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    transition: all 0.3s;
    position: relative;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-secondary));
    transition: width 0.3s;
}

.nav-links a:hover {
    color: var(--color-accent);
}

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

/* Language Switcher */
.language-switcher {
    position: relative;
}

.language-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text-light);
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.875rem;
    font-family: inherit;
}

.language-btn svg:first-child {
    width: 18px;
    height: 18px;
}

.language-btn .chevron {
    width: 16px;
    height: 16px;
    transition: transform 0.3s;
}

.language-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.2);
}

.language-switcher.active .language-btn {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.language-switcher.active .language-btn .chevron {
    transform: rotate(180deg);
}

.language-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    min-width: 180px;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s;
    z-index: 1000;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 240, 255, 0.1);
}

.language-switcher.active .language-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-dropdown a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--color-text-light);
    border-radius: 6px;
    transition: all 0.3s;
    font-size: 0.875rem;
    text-transform: none;
    letter-spacing: normal;
    font-weight: 400;
}

.language-dropdown a::after {
    display: none;
}

.language-dropdown a:hover {
    background: rgba(0, 240, 255, 0.1);
    color: var(--color-accent);
    transform: translateX(4px);
}

.language-dropdown a.active {
    background: rgba(0, 240, 255, 0.15);
    color: var(--color-accent);
    border-left: 2px solid var(--color-accent);
}

.lang-flag {
    font-size: 1.25rem;
    line-height: 1;
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0.875rem 1.5rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .nav-links > a {
        display: none;
    }

    .language-btn .current-lang {
        display: none;
    }

    .language-btn {
        padding: 0.5rem;
    }
}

/* ===== Hero区域 ===== */
.hero {
    padding: 10rem 0 6rem;
    min-height: 85vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-background img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    opacity: 0.3;
    filter: blur(0px) saturate(1.5) hue-rotate(200deg);
    animation: subtle-zoom 20s ease-in-out infinite alternate;
    mix-blend-mode: screen;
}

@keyframes subtle-zoom {
    from {
        transform: scale(1);
    }
    to {
        transform: scale(1.1);
    }
}

.map-decorations {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
}

.map-pin {
    position: absolute;
    width: 40px;
    height: 40px;
    color: var(--color-accent);
    opacity: 0.8;
    animation: float-pin 4s ease-in-out infinite;
    filter: drop-shadow(0 0 15px currentColor);
}

.map-pin svg {
    width: 100%;
    height: 100%;
}

.pin-1 {
    top: 20%;
    left: 15%;
    animation-delay: 0s;
    color: var(--color-accent);
}

.pin-2 {
    top: 60%;
    right: 20%;
    animation-delay: 1.5s;
    color: var(--color-accent-secondary);
}

.pin-3 {
    bottom: 25%;
    left: 25%;
    animation-delay: 3s;
    color: var(--color-accent-tertiary);
}

@keyframes float-pin {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

@media (max-width: 768px) {
    .map-decorations {
        display: none;
    }
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(
        ellipse at center,
        rgba(10, 14, 39, 0.4) 0%,
        rgba(10, 14, 39, 0.8) 100%
    );
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 240, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 240, 255, 0.1) 1px, transparent 1px);
    background-size: 100px 100px;
    animation: grid-pulse 3s ease-in-out infinite;
}

@keyframes grid-pulse {
    0%, 100% {
        opacity: 0.3;
    }
    50% {
        opacity: 0.6;
    }
}

.hero .container {
    position: relative;
    z-index: 1;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    text-shadow: 0 0 40px rgba(0, 240, 255, 0.5);
    animation: title-glow 2s ease-in-out infinite alternate;
}

@keyframes title-glow {
    from {
        text-shadow: 0 0 40px rgba(0, 240, 255, 0.5);
    }
    to {
        text-shadow: 0 0 60px rgba(0, 240, 255, 0.8), 0 0 80px rgba(255, 0, 255, 0.3);
    }
}

.highlight {
    color: var(--color-accent);
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 2.5rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-secondary));
    color: var(--color-bg);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.4);
    border: 2px solid transparent;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 50px rgba(0, 240, 255, 0.8), 0 10px 30px rgba(0, 0, 0, 0.3);
}

.btn-ghost {
    border: 2px solid var(--color-accent);
    color: var(--color-accent);
    background: transparent;
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
}

.btn-ghost:hover {
    border-color: var(--color-accent);
    background: rgba(0, 240, 255, 0.1);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.4);
    transform: translateY(-3px);
}

/* Hero Stats */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.stat-card {
    background: rgba(10, 14, 39, 0.6);
    backdrop-filter: blur(20px);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 1.5rem 1rem;
    text-align: center;
    transition: all 0.3s;
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    box-shadow: 0 10px 40px rgba(0, 240, 255, 0.3);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

@media (max-width: 768px) {
    .hero {
        padding: 10rem 0 6rem;
    }

    .hero-title {
        font-size: 2.5rem;
        animation: none;
        text-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        margin-top: 3rem;
    }

    .stat-card {
        padding: 1.5rem 1rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .tech-background .particle {
        display: none;
    }
}

/* ===== 技术栈区域 ===== */
.tech-stack {
    padding: var(--spacing-xxl) 0;
    background: var(--color-bg);
    position: relative;
}

.tech-stack::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent-tertiary), transparent);
}

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

.tech-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    text-align: center;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.tech-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-secondary));
    transform: scaleX(0);
    transition: transform 0.3s;
}

.tech-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-accent);
    box-shadow: 0 20px 60px rgba(0, 240, 255, 0.2);
}

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

.tech-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: rgba(0, 240, 255, 0.1);
    color: var(--color-accent);
    transition: all 0.3s;
}

.tech-card:hover .tech-icon {
    background: rgba(0, 240, 255, 0.2);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.4);
}

.tech-icon svg {
    width: 32px;
    height: 32px;
}

.tech-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.tech-card p {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

@media (max-width: 968px) {
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 520px) {
    .tech-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 特性区域 ===== */
.features {
    padding: var(--spacing-xxl) 0;
    background: var(--color-bg-secondary);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    text-align: center;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-accent);
    box-shadow: 0 20px 60px rgba(0, 240, 255, 0.2);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(0, 240, 255, 0.1);
    color: var(--color-accent);
    transition: all 0.3s;
}

.feature-card:hover .feature-icon {
    background: rgba(0, 240, 255, 0.2);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.4);
    transform: scale(1.1);
}

.feature-icon svg {
    width: 32px;
    height: 32px;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 1rem;
}

.feature-card p {
    font-size: 0.875rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

@media (max-width: 968px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 520px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 案例区域 ===== */
.cases {
    padding: var(--spacing-xxl) 0;
    background: var(--color-bg);
    position: relative;
}

.cases::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent-secondary), transparent);
}

.case-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 6rem;
}

.case-item:last-child {
    margin-bottom: 0;
}

.case-left .case-image {
    order: 1;
}

.case-left .case-content {
    order: 2;
}

.case-right .case-image {
    order: 2;
}

.case-right .case-content {
    order: 1;
}

.case-image {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all 0.3s;
}

.case-image:hover {
    border-color: var(--color-accent);
    box-shadow: 0 20px 60px rgba(0, 240, 255, 0.3);
}

.case-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.6s;
}

.case-image:hover img {
    transform: scale(1.05);
}

.case-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(10, 14, 39, 0.2) 0%,
        rgba(10, 14, 39, 0.6) 100%
    );
}

.case-content h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--color-text), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.case-content > p {
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.case-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.case-stat {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.case-stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-accent);
}

.case-stat-label {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.case-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: 2px solid var(--color-accent);
    border-radius: 8px;
    color: var(--color-accent);
    font-weight: 600;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.875rem;
}

.case-link svg {
    width: 18px;
    height: 18px;
    transition: transform 0.3s;
}

.case-link:hover {
    background: var(--color-accent);
    color: var(--color-bg);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
    transform: translateX(4px);
}

.case-link:hover svg {
    transform: translateX(4px);
}

@media (max-width: 968px) {
    .case-item {
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-bottom: 4rem;
    }

    .case-left .case-image,
    .case-right .case-image {
        order: 1;
    }

    .case-left .case-content,
    .case-right .case-content {
        order: 2;
    }

    .case-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }

    .case-stat-number {
        font-size: 1.5rem;
    }
}

/* ===== 产品区域 ===== */
.products {
    padding: var(--spacing-xxl) 0;
    background: var(--color-bg-secondary);
    position: relative;
}

.products::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

.section-intro {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-intro h2 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--color-text), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-intro p {
    font-size: 1.125rem;
    color: var(--color-text-light);
}

.product-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.product-card {
    background: var(--color-bg);
    border-radius: 16px;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-secondary));
    transform: scaleX(0);
    transition: transform 0.6s;
}

.product-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 240, 255, 0.2);
    border-color: var(--color-accent);
}

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

.product-image {
    position: relative;
    width: 100%;
    height: 200px;
    margin: -1px -1px 2rem -1px;
    border-radius: 16px 16px 0 0;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s;
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(10, 14, 39, 0.3) 0%,
        rgba(10, 14, 39, 0.8) 100%
    );
}

.product-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 0 2rem;
}

.product-logo {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    object-fit: cover;
    border: 2px solid var(--color-border);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
}

.product-header h3 {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-text), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.product-content {
    padding: 0 2rem 2rem;
}

.product-desc {
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.product-features {
    list-style: none;
    margin-bottom: 2rem;
}

.product-features li {
    padding: 0.75rem 0;
    color: var(--color-text-light);
    position: relative;
    padding-left: 1.5rem;
    line-height: 1.6;
}

.product-features li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-size: 1.2rem;
    animation: pulse-arrow 2s ease-in-out infinite;
}

@keyframes pulse-arrow {
    0%, 100% {
        opacity: 0.6;
    }
    50% {
        opacity: 1;
    }
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: 2px solid var(--color-accent);
    border-radius: 8px;
    color: var(--color-accent);
    font-weight: 600;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.875rem;
}

.product-link svg {
    width: 18px;
    height: 18px;
    transition: transform 0.3s;
}

.product-link:hover {
    background: var(--color-accent);
    color: var(--color-bg);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
    transform: translateX(4px);
}

.product-link:hover svg {
    transform: translateX(4px);
}

@media (max-width: 968px) {
    .product-list {
        grid-template-columns: 1fr;
    }

    .product-image {
        height: 180px;
    }

    .product-header {
        padding: 0 1.5rem;
    }

    .product-content {
        padding: 0 1.5rem 1.5rem;
    }
}

/* ===== 关于区域 ===== */
.about {
    padding: var(--spacing-xxl) 0;
    background: var(--color-bg);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent-secondary), transparent);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.about-grid.visible {
    opacity: 1;
    transform: translateY(0);
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--color-text), var(--color-accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-text p {
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.expertise {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.expertise-item {
    padding: 2rem;
    background: var(--color-bg-secondary);
    border-radius: 12px;
    transition: all 0.3s;
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.expertise-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--color-accent), var(--color-accent-secondary));
    transform: scaleY(0);
    transition: transform 0.3s;
}

.expertise-item:hover {
    transform: translateX(8px);
    border-color: var(--color-accent);
    box-shadow: 0 10px 40px rgba(0, 240, 255, 0.2);
}

.expertise-item:hover::before {
    transform: scaleY(1);
}

.expertise-item h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-accent);
}

.expertise-item p {
    color: var(--color-text-light);
}

@media (max-width: 968px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

/* ===== 联系区域 ===== */
.contact {
    padding: var(--spacing-xxl) 0;
    background: var(--color-bg-secondary);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent-tertiary), transparent);
}

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.contact-content.visible {
    opacity: 1;
    transform: translateY(0);
}

.contact-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--color-text), var(--color-accent-tertiary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-content p {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: 2rem;
}

.contact-email {
    display: inline-block;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-accent);
    padding: 1rem 2rem;
    border: 2px solid var(--color-accent);
    border-radius: 12px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.3);
}

.contact-email::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-secondary));
    opacity: 0;
    transition: opacity 0.3s;
}

.contact-email:hover {
    color: var(--color-bg);
    transform: translateY(-4px);
    box-shadow: 0 0 50px rgba(0, 240, 255, 0.6);
}

.contact-email:hover::before {
    opacity: 1;
}

.contact-email span {
    position: relative;
    z-index: 1;
}

/* ===== 页脚 ===== */
.footer {
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo-img {
    height: 32px;
    width: auto;
    display: block;
    filter: drop-shadow(0 0 10px rgba(0, 240, 255, 0.3));
    margin-bottom: 1rem;
}

.footer-tagline {
    color: var(--color-text-light);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}

.footer-description {
    color: var(--color-text-light);
    font-size: 0.875rem;
    line-height: 1.6;
    opacity: 0.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    color: var(--color-accent);
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 0.75rem;
}

.footer-column a {
    color: var(--color-text-light);
    font-size: 0.875rem;
    transition: all 0.3s;
    display: inline-block;
    position: relative;
}

.footer-column a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: width 0.3s;
}

.footer-column a:hover {
    color: var(--color-accent);
    transform: translateX(4px);
}

.footer-column a:hover::after {
    width: 100%;
}

.footer-social {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
}

.footer-social a {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    transition: all 0.3s;
}

.footer-social a::after {
    display: none;
}

.footer-social a svg {
    width: 16px;
    height: 16px;
}

.footer-social a:hover {
    border-color: var(--color-accent);
    background: rgba(0, 240, 255, 0.1);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
    transform: translateY(-2px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.footer-bottom-left {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-bottom-left > p {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

.footer-beian {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.footer-beian a {
    color: var(--color-text-light);
    font-size: 0.75rem;
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.footer-beian a svg {
    width: 14px;
    height: 14px;
    opacity: 0.6;
}

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

.footer-beian a:hover svg {
    opacity: 1;
}

.footer-beian .separator {
    color: var(--color-border);
    font-size: 0.75rem;
}

.footer-bottom-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-bottom-links a {
    color: var(--color-text-light);
    font-size: 0.875rem;
    transition: color 0.3s;
}

.footer-bottom-links a:hover {
    color: var(--color-accent);
}

.footer-bottom-links .separator {
    color: var(--color-border);
}

@media (max-width: 968px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
        align-items: center;
    }

    .footer-bottom-left {
        align-items: center;
    }

    .footer-beian {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .footer {
        padding: 3rem 0 1.5rem;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}