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

:root {
    --primary: #00d4ff;
    --primary-dark: #0099cc;
    --secondary: #7b2ff7;
    --accent: #f107a3;
    --bg-dark: #050816;
    --bg-darker: #020510;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(0, 212, 255, 0.3);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --gradient: linear-gradient(135deg, #00d4ff 0%, #7b2ff7 100%);
    --gradient-2: linear-gradient(135deg, #f107a3 0%, #7b2ff7 100%);
    --gradient-3: linear-gradient(135deg, #00d4ff 0%, #00ff88 100%);
    --shadow-glow: 0 0 60px rgba(0, 212, 255, 0.15);
    --shadow-card: 0 20px 60px rgba(0, 0, 0, 0.3);
    --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Noto Serif SC', serif;
    --font-display: 'Orbitron', var(--font-sans);
}

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

body {
    font-family: var(--font-sans);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
    position: relative;
    z-index: 2;
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 20px 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(0px);
    background: transparent;
}

.navbar.scrolled {
    padding: 14px 0;
    background: rgba(5, 8, 22, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
}

.logo-icon {
    width: 42px;
    height: 42px;
}

.logo-icon svg {
    width: 100%;
    height: 100%;
}

.logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 8px;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-cn {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 2px;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-en {
    font-size: 10px;
    letter-spacing: 3px;
    color: var(--text-muted);
    font-family: var(--font-display);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    position: relative;
    padding: 8px 20px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.nav-link::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient);
    border-radius: 8px;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link.active {
    background: rgba(0, 212, 255, 0.1);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    text-decoration: none;
    background: var(--gradient);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-2);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary span,
.btn-primary svg {
    position: relative;
    z-index: 1;
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-ghost:hover {
    border-color: var(--primary);
    background: rgba(0, 212, 255, 0.08);
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 36px;
    font-size: 16px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
}

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

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 40px 60px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, #00d4ff 0%, transparent 70%);
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #7b2ff7 0%, transparent 70%);
    bottom: -150px;
    left: -100px;
    animation-delay: -7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #f107a3 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.25;
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -40px) scale(1.05); }
    66% { transform: translate(-20px, 30px) scale(0.95); }
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 20px 8px 14px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 100px;
    font-size: 13px;
    color: var(--primary);
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease;
    letter-spacing: 0.5px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 10px var(--primary);
    animation: pulse 2s ease infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(42px, 7vw, 88px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 28px;
}

.title-line {
    display: block;
    animation: fadeInUp 0.8s ease both;
}

.title-line:first-child {
    animation-delay: 0.1s;
}

.title-line:last-child {
    animation-delay: 0.3s;
}

.hero-subtitle {
    font-size: clamp(16px, 1.8vw, 20px);
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.5s both;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 80px;
    animation: fadeInUp 0.8s ease 0.7s both;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 48px;
    animation: fadeInUp 0.8s ease 0.9s both;
    flex-wrap: wrap;
}

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

.stat-value {
    font-family: var(--font-display);
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 8px;
    letter-spacing: 0.5px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    animation: fadeInUp 1s ease 1.2s both;
}

.mouse {
    width: 22px;
    height: 36px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 6px;
}

.wheel {
    width: 3px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    animation: scrollWheel 2s ease infinite;
}

@keyframes scrollWheel {
    0% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(12px); opacity: 0; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section {
    position: relative;
    padding: 120px 0;
    z-index: 2;
}

.section-header {
    text-align: center;
    margin-bottom: 72px;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 500;
    color: var(--primary);
    letter-spacing: 4px;
    margin-bottom: 16px;
    position: relative;
    padding: 0 30px;
}

.section-tag::before,
.section-tag::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 20px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary));
}

.section-tag::before {
    left: 0;
}

.section-tag::after {
    right: 0;
    background: linear-gradient(90deg, var(--primary), transparent);
}

.section-tag.light {
    color: rgba(255, 255, 255, 0.7);
}

.section-tag.light::before,
.section-tag.light::after {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3));
}

.section-tag.light::after {
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.3), transparent);
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(32px, 4.5vw, 52px);
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-title.light {
    color: #fff;
}

.section-desc {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-content h3 {
    font-family: var(--font-serif);
    font-size: 28px;
    margin-bottom: 24px;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.about-content p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.9;
    font-size: 16px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 36px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    transition: all 0.4s ease;
}

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

.feature-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient);
    border-radius: 10px;
}

.feature-icon svg {
    width: 22px;
    height: 22px;
    color: #fff;
}

.feature-item h4 {
    font-size: 15px;
    margin-bottom: 4px;
}

.feature-item p {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
}

.about-visual {
    position: relative;
    height: 500px;
}

.visual-card {
    position: absolute;
    padding: 32px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 20px;
    backdrop-filter: blur(20px);
    transition: all 0.4s ease;
}

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

.card-main {
    top: 0;
    right: 40px;
    width: 240px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(123, 47, 247, 0.1));
    border-color: rgba(0, 212, 255, 0.3);
}

.card-glow {
    position: absolute;
    inset: -2px;
    border-radius: 22px;
    background: var(--gradient);
    z-index: -1;
    opacity: 0.3;
    filter: blur(20px);
}

.card-sub {
    top: 180px;
    left: 0;
    width: 200px;
}

.card-stat {
    bottom: 0;
    right: 80px;
    width: 220px;
}

.card-number {
    font-family: var(--font-display);
    font-size: 13px;
    color: var(--primary);
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.card-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.card-value {
    font-family: var(--font-serif);
    font-size: 36px;
    font-weight: 700;
}

.floating-element {
    position: absolute;
    border-radius: 50%;
    background: var(--gradient);
    opacity: 0.4;
    animation: float 15s ease-in-out infinite;
}

.float-1 {
    width: 60px;
    height: 60px;
    top: 60px;
    left: 80px;
    animation-delay: -3s;
}

.float-2 {
    width: 30px;
    height: 30px;
    bottom: 100px;
    left: 60px;
    animation-delay: -10s;
}

.float-3 {
    width: 40px;
    height: 40px;
    top: 300px;
    right: 20px;
    animation-delay: -6s;
}

.services {
    background: var(--bg-darker);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    position: relative;
    padding: 40px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.service-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-8px);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3), 0 0 60px rgba(0, 212, 255, 0.08);
}

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

.service-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(123, 47, 247, 0.1));
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 16px;
    color: var(--primary);
    transition: all 0.4s ease;
}

.service-icon svg {
    width: 36px;
    height: 36px;
}

.service-card:hover .service-icon {
    background: var(--gradient);
    color: #fff;
    border-color: transparent;
    transform: scale(1.08);
}

.service-card h3 {
    font-family: var(--font-serif);
    font-size: 22px;
    margin-bottom: 14px;
}

.service-card > p {
    color: var(--text-secondary);
    font-size: 14.5px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.service-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.service-list li {
    font-size: 13px;
    color: var(--text-muted);
    padding-left: 4px;
}

.technology {
    position: relative;
    overflow: hidden;
}

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

.tech-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 500px;
}

.tech-orbit {
    position: relative;
    width: 420px;
    height: 420px;
}

.orbit-ring {
    position: absolute;
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 50%;
    animation: rotate 30s linear infinite;
}

.ring-1 {
    inset: 0;
}

.ring-2 {
    inset: 40px;
    border-color: rgba(123, 47, 247, 0.2);
    animation-duration: 20s;
    animation-direction: reverse;
}

.ring-3 {
    inset: 80px;
    border-color: rgba(241, 7, 163, 0.2);
    animation-duration: 15s;
}

@keyframes rotate {
    to { transform: rotate(360deg); }
}

.orbit-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.center-core {
    position: absolute;
    inset: 0;
    background: var(--gradient);
    border-radius: 50%;
    filter: blur(30px);
    opacity: 0.6;
    animation: pulse 3s ease infinite;
}

.center-label {
    position: relative;
    z-index: 1;
    font-family: var(--font-display);
    font-size: 36px;
    font-weight: 900;
    background: #fff;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.satellite {
    position: absolute;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 13px;
    color: var(--text-secondary);
    animation: rotate 30s linear infinite reverse;
}

.satellite span {
    display: inline-block;
    animation: rotate 30s linear infinite;
}

.sat-1 {
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
}

.sat-2 {
    top: 50%;
    right: -20px;
    transform: translateY(-50%);
    animation-delay: -7.5s;
}

.sat-3 {
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: -15s;
}

.sat-4 {
    top: 50%;
    left: -20px;
    transform: translateY(-50%);
    animation-delay: -22.5s;
}

.tech-highlight h3 {
    font-family: var(--font-serif);
    font-size: 28px;
    margin-bottom: 20px;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tech-highlight p {
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 36px;
}

.tech-tags {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.tech-tag {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tag-bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    width: 0;
    background: var(--gradient);
    border-radius: 4px;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.tag-info {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-secondary);
}

.team {
    background: var(--bg-darker);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.team-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    transition: all 0.4s ease;
}

.team-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-8px);
}

.team-avatar {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.avatar-ring {
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid transparent;
    background: var(--gradient) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    animation: rotate 8s linear infinite;
}

.team-avatar:hover .avatar-ring {
    animation-duration: 3s;
}

.avatar-initials {
    width: 92px;
    height: 92px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(123, 47, 247, 0.2));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 36px;
    font-weight: 700;
    color: #fff;
}

.team-info h3 {
    font-size: 20px;
    margin-bottom: 6px;
}

.team-role {
    font-size: 13px;
    color: var(--primary);
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.team-info p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.7;
}

.contact {
    position: relative;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
    padding: 60px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.06), rgba(123, 47, 247, 0.04));
    border: 1px solid var(--border);
    border-radius: 30px;
    backdrop-filter: blur(20px);
}

.contact-info .section-title {
    text-align: left;
}

.contact-info .section-tag {
    justify-content: flex-start;
    display: inline-block;
}

.contact-desc {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin: 20px 0 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient);
    border-radius: 12px;
}

.contact-icon svg {
    width: 22px;
    height: 22px;
    color: #fff;
}

.contact-item h4 {
    font-size: 15px;
    margin-bottom: 2px;
}

.contact-item p {
    font-size: 14px;
    color: var(--text-muted);
    margin: 0;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 15px;
    font-family: inherit;
    transition: all 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(0, 212, 255, 0.06);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}
/* 修复：下拉打开后 option 文字色（避免继承 .form-group 的浅色前景） */
.form-group select option {
    color: #1a2333;
    background: #ffffff;
    padding: 6px 8px;
}
.form-group select option:checked {
    color: #0a0e1a;
    background: #e0f7ff;
    font-weight: 600;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.submit-btn {
    align-self: flex-start;
    margin-top: 8px;
}

.footer {
    position: relative;
    z-index: 2;
    padding: 80px 0 30px;
    background: var(--bg-darker);
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 50px;
    margin-bottom: 60px;
}

.footer-logo {
    margin-bottom: 20px;
}

.footer-desc {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 24px;
}

.footer-col h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col ul a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

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

.social-links {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--gradient);
    border-color: transparent;
    color: #fff;
    transform: translateY(-3px);
}

.social-link svg {
    width: 18px;
    height: 18px;
}

.footer-contact {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.8;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border);
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .about-grid,
    .tech-showcase,
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .tech-visual {
        height: 400px;
    }

    .about-visual {
        height: auto;
        min-height: 400px;
    }
}

@media (max-width: 768px) {
    .nav-menu,
    .nav-cta {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-menu.open {
        display: flex;
        position: fixed;
        top: 70px;
        left: 20px;
        right: 20px;
        flex-direction: column;
        background: rgba(5, 8, 22, 0.98);
        backdrop-filter: blur(20px);
        padding: 20px;
        border-radius: 16px;
        border: 1px solid var(--border);
    }

    .section {
        padding: 80px 0;
    }

    .container {
        padding: 0 24px;
    }

    .hero-stats {
        gap: 28px;
    }

    .stat-divider {
        display: none;
    }

    .services-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }

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

    .about-features {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .contact-wrapper {
        padding: 32px 24px;
    }

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

    .tech-orbit {
        transform: scale(0.75);
    }
}

.news {
    background: var(--bg-darker);
}

.news-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.news-tab {
    padding: 10px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 100px;
    color: var(--text-secondary);
    font-size: 14px;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
}

.news-tab:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.news-tab.active {
    background: var(--gradient);
    border-color: transparent;
    color: #fff;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.news-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.4s ease;
    cursor: pointer;
}

.news-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-8px);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3), 0 0 60px rgba(0, 212, 255, 0.08);
}

.news-cover {
    height: 180px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.news-cover::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0.3;
}

.news-cover .cover-icon {
    position: relative;
    z-index: 1;
    width: 60px;
    height: 60px;
    color: rgba(255, 255, 255, 0.8);
}

.news-body {
    padding: 28px;
}

.news-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 14px;
    font-size: 13px;
    color: var(--text-muted);
}

.news-category {
    padding: 3px 12px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 100px;
    color: var(--primary);
    font-size: 12px;
}

.news-card h3 {
    font-family: var(--font-serif);
    font-size: 20px;
    margin-bottom: 12px;
    line-height: 1.5;
    transition: color 0.3s ease;
}

.news-card:hover h3 {
    color: var(--primary);
}

.news-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-loading {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 0;
    gap: 20px;
    color: var(--text-muted);
}

.news-loading .spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.news-empty {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 0;
    gap: 16px;
    color: var(--text-muted);
}

.news-empty svg {
    width: 60px;
    height: 60px;
    opacity: 0.5;
}

.admin-entry {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    margin-left: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-muted);
    transition: all 0.3s ease;
    vertical-align: middle;
}

.admin-entry:hover {
    background: var(--gradient);
    border-color: transparent;
    color: #fff;
    transform: translateY(-2px);
}

.admin-entry svg {
    width: 18px;
    height: 18px;
}

.news-detail-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding: 60px 20px;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    overflow-y: auto;
    animation: newsModalFade 0.25s ease;
}

@keyframes newsModalFade {
    from { opacity: 0; }
    to { opacity: 1; }
}

.news-detail-modal.active {
    display: flex;
}

.news-detail-content {
    position: relative;
    max-width: 820px;
    width: 100%;
    background: var(--bg-darker);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 0;
    margin: auto 0;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}

.news-detail-cover {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 24px 24px 0 0;
}

.news-detail-body {
    padding: 40px;
}

.news-detail-body h2 {
    font-family: var(--font-serif);
    font-size: 28px;
    margin-bottom: 16px;
    line-height: 1.4;
}

.news-detail-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 24px;
    font-size: 13px;
    color: var(--text-muted);
}

.news-detail-text {
    font-size: 15px;
    line-height: 2;
    color: var(--text-secondary);
    white-space: pre-wrap;
}

.rich-content {
    font-size: 15px;
    line-height: 1.9;
    color: var(--text-secondary);
}

.rich-content p { margin: 0 0 14px; }
.rich-content h2,
.rich-content h3,
.rich-content h4 {
    color: var(--text-primary);
    margin: 18px 0 12px;
    font-weight: 600;
}
.rich-content h2 { font-size: 22px; }
.rich-content h3 { font-size: 19px; }
.rich-content h4 { font-size: 17px; }
.rich-content blockquote {
    margin: 14px 0;
    padding: 12px 20px;
    border-left: 3px solid var(--accent-cyan);
    background: var(--bg-card);
    border-radius: 0 8px 8px 0;
    color: var(--text-muted);
}
.rich-content pre {
    background: #0d1117;
    color: #e6edf3;
    padding: 14px 18px;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 13px;
    margin: 14px 0;
}
.rich-content ul,
.rich-content ol {
    padding-left: 28px;
    margin: 0 0 14px;
}
.rich-content li { margin-bottom: 4px; }
.rich-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 14px 0;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    display: block;
}
.rich-content a {
    color: var(--accent-cyan);
    text-decoration: underline;
}
.rich-content b, .rich-content strong { color: var(--text-primary); font-weight: 600; }

.news-detail-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.news-detail-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

@media (max-width: 1024px) {
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .news-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
    }
    
    .news-tab {
        flex-shrink: 0;
    }
}