/* ===========================
   全局变量与基础样式
   =========================== */
:root {
    --bg-primary: #060912;
    --bg-secondary: #0a0f1c;
    --bg-tertiary: #0f1629;
    --surface: rgba(15, 23, 42, 0.6);
    --surface-hover: rgba(20, 30, 55, 0.8);
    --accent: #00ff9d;
    --accent-dim: rgba(0, 255, 157, 0.15);
    --accent-glow: rgba(0, 255, 157, 0.4);
    --cyan: #00d4ff;
    --cyan-dim: rgba(0, 212, 255, 0.15);
    --purple: #7c3aed;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;
    --border: rgba(0, 255, 157, 0.12);
    --border-hover: rgba(0, 255, 157, 0.3);
    --danger: #ff4757;
    --warning: #ffa502;
    --radius: 12px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

/* 滚动条 */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--accent-dim);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-glow);
}

/* ===========================
   加载动画
   =========================== */
#loader {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}
#loader.hidden {
    opacity: 0;
    visibility: hidden;
}
.loader-ring {
    width: 50px;
    height: 50px;
    border: 3px solid transparent;
    border-top-color: var(--accent);
    border-right-color: var(--cyan);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}
.loader-text {
    color: var(--text-secondary);
    font-size: 14px;
    letter-spacing: 2px;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===========================
   导航栏
   =========================== */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 18px 0;
    transition: var(--transition);
}
#navbar.scrolled {
    background: rgba(6, 9, 18, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}
.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
}
.logo-icon {
    display: flex;
    animation: logoPulse 3s ease-in-out infinite;
}
@keyframes logoPulse {
    0%, 100% { filter: drop-shadow(0 0 4px var(--accent-glow)); }
    50% { filter: drop-shadow(0 0 12px var(--accent-glow)); }
}
.logo-text {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 1px;
}
.nav-links {
    list-style: none;
    display: flex;
    gap: 36px;
    align-items: center;
}
.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
    position: relative;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
    transition: width var(--transition);
    box-shadow: 0 0 8px var(--accent-glow);
}
.nav-links a:hover {
    color: var(--accent);
}
.nav-links a:hover::after {
    width: 100%;
}
.nav-cta {
    padding: 8px 20px !important;
    border: 1px solid var(--border-hover) !important;
    border-radius: 6px !important;
    color: var(--accent) !important;
    background: var(--accent-dim);
}
.nav-cta:hover {
    background: var(--accent) !important;
    color: var(--bg-primary) !important;
}
.nav-cta::after {
    display: none !important;
}
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: var(--transition);
}
.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(7px, -7px);
}

/* ===========================
   Hero 区域
   =========================== */
#hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}
#globe-container {
    position: absolute;
    inset: 0;
    z-index: 1;
}
.hero-overlay {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 1280px;
    padding: 0 32px;
    text-align: center;
}
.hero-content {
    max-width: 800px;
    margin: 0 auto;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--accent-dim);
    border: 1px solid var(--border-hover);
    border-radius: 30px;
    font-size: 13px;
    color: var(--accent);
    margin-bottom: 28px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent);
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}
.hero-title {
    font-family: 'Orbitron', 'Microsoft YaHei', sans-serif;
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: 2px;
}
.title-line {
    display: block;
    overflow: hidden;
}
.title-line span,
.title-line {
    animation: titleSlide 1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
.title-accent {
    background: linear-gradient(135deg, var(--accent), var(--cyan));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 40px var(--accent-glow);
}
@keyframes titleSlide {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.hero-subtitle {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}
.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 8px;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.btn-primary {
    background: var(--accent);
    color: var(--bg-primary);
    box-shadow: 0 0 24px var(--accent-glow);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 32px var(--accent-glow);
}
.btn-ghost {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-hover);
}
.btn-ghost:hover {
    background: var(--surface);
    border-color: var(--accent);
    color: var(--accent);
}
.btn-large {
    padding: 18px 40px;
    font-size: 17px;
}
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-tertiary);
    font-size: 12px;
    letter-spacing: 2px;
}
.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    51% { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ===========================
   数据统计
   =========================== */
#stats {
    padding: 80px 32px;
    max-width: 1280px;
    margin: 0 auto;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.stat-card {
    text-align: center;
    padding: 36px 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}
.stat-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
}
.stat-card:hover::before {
    transform: translateX(100%);
}
.stat-number {
    font-family: 'Orbitron', sans-serif;
    font-size: 42px;
    font-weight: 900;
    color: var(--accent);
    text-shadow: 0 0 20px var(--accent-glow);
    margin-bottom: 8px;
}
.stat-label {
    color: var(--text-secondary);
    font-size: 14px;
}
.stat-bar {
    width: 40px;
    height: 3px;
    background: var(--accent-dim);
    border-radius: 2px;
    margin: 12px auto 0;
}

/* ===========================
   通用 Section 样式
   =========================== */
section {
    position: relative;
}
.section-header {
    text-align: center;
    padding: 80px 32px 48px;
    max-width: 1280px;
    margin: 0 auto;
}
.section-tag {
    font-family: 'Orbitron', sans-serif;
    font-size: 13px;
    letter-spacing: 4px;
    color: var(--accent);
    margin-bottom: 12px;
    opacity: 0.8;
}
.section-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}
.section-line {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--cyan));
    border-radius: 2px;
    margin: 0 auto;
    box-shadow: 0 0 12px var(--accent-glow);
}

/* ===========================
   关于我们
   =========================== */
#about {
    padding-bottom: 80px;
}
.about-content {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}
.about-text h3 {
    font-size: 24px;
    color: var(--text-primary);
    margin-bottom: 20px;
}
.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.8;
}
.highlight {
    color: var(--accent);
    font-weight: 600;
}
.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 28px;
}
.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: var(--transition);
}
.feature-item:hover {
    border-color: var(--border-hover);
    background: var(--surface-hover);
}
.feature-icon {
    color: var(--accent);
    display: flex;
    flex-shrink: 0;
}
.feature-item span {
    font-size: 14px;
    color: var(--text-primary);
}

/* 监控面板卡片 */
.visual-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
}
.card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 18px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border);
}
.card-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.card-dot.red { background: #ff5f57; }
.card-dot.yellow { background: #febc2e; }
.card-dot.green { background: #28c840; }
.card-title {
    margin-left: auto;
    font-family: 'Orbitron', monospace;
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--text-tertiary);
}
.monitor-body {
    padding: 24px;
}
.monitor-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.monitor-label {
    font-size: 13px;
    color: var(--text-secondary);
    width: 80px;
    flex-shrink: 0;
}
.monitor-bar {
    flex: 1;
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    overflow: hidden;
}
.bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--cyan));
    border-radius: 4px;
    width: 0;
    transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 8px var(--accent-glow);
}
.monitor-value {
    font-family: 'Orbitron', monospace;
    font-size: 12px;
    width: 100px;
    text-align: right;
    flex-shrink: 0;
}
.monitor-value.safe {
    color: var(--accent);
}
.monitor-summary {
    display: flex;
    gap: 20px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}
.summary-item {
    flex: 1;
    text-align: center;
}
.summary-label {
    display: block;
    font-size: 12px;
    color: var(--text-tertiary);
    margin-bottom: 6px;
}
.summary-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--accent);
}
.summary-value.grade {
    background: linear-gradient(135deg, var(--accent), var(--cyan));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ===========================
   服务项目
   =========================== */
#services {
    padding-bottom: 80px;
}
.services-grid {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.service-card {
    padding: 36px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.service-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, var(--accent-dim), transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
}
.service-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}
.service-card:hover::after {
    opacity: 1;
}
.service-icon {
    color: var(--accent);
    margin-bottom: 20px;
    filter: drop-shadow(0 0 8px var(--accent-glow));
}
.service-card h3 {
    font-size: 20px;
    color: var(--text-primary);
    margin-bottom: 12px;
}
.service-card p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 20px;
}
.service-tags {
    list-style: none;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.service-tags li {
    padding: 4px 12px;
    background: var(--accent-dim);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 12px;
    color: var(--accent);
}

/* ===========================
   治理流程
   =========================== */
#process {
    padding-bottom: 80px;
}
.process-timeline {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 32px;
    position: relative;
}
.process-step {
    display: flex;
    gap: 24px;
    position: relative;
    padding-bottom: 40px;
}
.step-number {
    font-family: 'Orbitron', sans-serif;
    font-size: 24px;
    font-weight: 900;
    color: var(--accent);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface);
    border: 2px solid var(--border-hover);
    border-radius: 50%;
    flex-shrink: 0;
    position: relative;
    z-index: 2;
    box-shadow: 0 0 16px var(--accent-dim);
}
.step-line {
    position: absolute;
    left: 30px;
    top: 60px;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-dim), transparent);
}
.process-step:last-child .step-line {
    display: none;
}
.step-content {
    flex: 1;
    padding-top: 8px;
}
.step-content h3 {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 8px;
}
.step-content p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
}

/* ===========================
   旗下公司
   =========================== */
#subsidiary {
    padding-bottom: 80px;
}
.subsidiary-card {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 32px;
}
.subsidiary-card > .subsidiary-glow {
    position: absolute;
}
.subsidiary-card {
    position: relative;
}
.subsidiary-glow {
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, var(--accent), var(--cyan), var(--purple));
    border-radius: calc(var(--radius) + 2px);
    opacity: 0.15;
    z-index: 0;
    filter: blur(8px);
}
.subsidiary-content {
    position: relative;
    z-index: 1;
    display: flex;
    gap: 32px;
    align-items: flex-start;
    padding: 40px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.subsidiary-logo {
    color: var(--cyan);
    flex-shrink: 0;
    padding: 20px;
    background: var(--cyan-dim);
    border-radius: var(--radius);
    filter: drop-shadow(0 0 12px rgba(0, 212, 255, 0.3));
}
.subsidiary-info h3 {
    font-size: 22px;
    color: var(--text-primary);
    margin-bottom: 16px;
}
.subsidiary-info p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 20px;
}
.subsidiary-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.subsidiary-tags span {
    padding: 6px 16px;
    background: var(--cyan-dim);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 20px;
    font-size: 13px;
    color: var(--cyan);
}

/* ===========================
   联系我们
   =========================== */
#contact {
    padding-bottom: 80px;
}
.contact-content {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: center;
}
.contact-info h3 {
    font-size: 28px;
    color: var(--text-primary);
    margin-bottom: 16px;
}
.contact-desc {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 32px;
}
.contact-items {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    transition: var(--transition);
}
.contact-item:hover {
    border-color: var(--border-hover);
    background: var(--surface-hover);
    transform: translateX(4px);
}
.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-dim);
    border-radius: 10px;
    color: var(--accent);
    flex-shrink: 0;
}
.contact-detail {
    display: flex;
    flex-direction: column;
}
.contact-label {
    font-size: 13px;
    color: var(--text-tertiary);
}
.contact-value {
    font-size: 16px;
    color: var(--text-primary);
    font-weight: 600;
}

/* 微信二维码卡片 */
.wechat-qr-card {
    margin-top: 24px;
    padding: 20px;
    background: rgba(0, 255, 157, 0.04);
    border: 1px solid rgba(0, 255, 157, 0.15);
    border-radius: 14px;
    display: flex;
    align-items: center;
    gap: 16px;
}
.wechat-qr-img {
    position: relative;
    width: 100px;
    height: 100px;
    flex-shrink: 0;
    border-radius: 10px;
    overflow: hidden;
    background: #fff;
}
.wechat-qr-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.wechat-qr-img.no-qr img {
    display: none;
}
.wechat-qr-img .wechat-qr-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: rgba(0, 255, 157, 0.06);
    color: var(--text-tertiary);
    font-size: 11px;
}
.wechat-qr-img:not(.no-qr) .wechat-qr-placeholder {
    display: none;
}
.wechat-qr-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.wechat-qr-label {
    font-size: 14px;
    color: var(--accent);
    font-weight: 600;
}
.wechat-qr-num {
    font-family: 'Orbitron', monospace;
    font-size: 16px;
    color: var(--text-primary);
    letter-spacing: 1px;
}

/* CTA 卡片 */
.contact-cta {
    position: relative;
}
.cta-card {
    position: relative;
    padding: 48px 36px;
    background: var(--surface);
    border: 1px solid var(--border-hover);
    border-radius: var(--radius);
    text-align: center;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    overflow: hidden;
}
.cta-glow {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 300px;
    height: 200px;
    background: radial-gradient(circle, var(--accent-glow), transparent 70%);
    opacity: 0.3;
}
.cta-card h3 {
    position: relative;
    font-size: 24px;
    color: var(--text-primary);
    margin-bottom: 12px;
}
.cta-card p {
    position: relative;
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 28px;
}
.cta-card .btn {
    position: relative;
    width: 100%;
    justify-content: center;
}
.cta-note {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
    font-size: 13px;
    color: var(--text-tertiary);
}

/* ===========================
   页脚
   =========================== */
footer {
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
    padding: 60px 32px 30px;
}
.footer-content {
    max-width: 1280px;
    margin: 0 auto;
}
.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}
.footer-brand {
    max-width: 360px;
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}
.footer-logo span {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}
.footer-brand p {
    color: var(--text-tertiary);
    font-size: 13px;
}
.footer-col h4 {
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 16px;
}
.footer-col a {
    display: block;
    color: var(--text-tertiary);
    font-size: 13px;
    text-decoration: none;
    margin-bottom: 10px;
    transition: var(--transition);
}
.footer-col a:hover {
    color: var(--accent);
}
.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
.footer-bottom p {
    color: var(--text-tertiary);
    font-size: 13px;
}

/* ===========================
   滚动动画
   =========================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
    transition-delay: var(--delay, 0s);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===========================
   客户案例 - 操作提示
   =========================== */
.case-hint {
    position: absolute;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 4;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(0, 255, 157, 0.08);
    border: 1px solid var(--border-hover);
    border-radius: 30px;
    font-size: 13px;
    color: var(--accent);
    white-space: nowrap;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}
.case-hint.active {
    opacity: 1;
    animation: hintBounce 2s ease-in-out infinite;
}
.case-hint svg {
    color: var(--accent);
    flex-shrink: 0;
}
@keyframes hintBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-6px); }
}

/* ===========================
   客户案例 - 地球缩略图叠加层
   =========================== */
#case-markers {
    position: absolute;
    inset: 0;
    z-index: 4;
    pointer-events: none;
}
.case-marker {
    position: absolute;
    width: 72px;
    pointer-events: none;
    cursor: pointer;
    transition: opacity 0.3s ease;
    will-change: left, top, opacity, transform;
}
.case-marker-img-wrap {
    width: 72px;
    height: 50px;
    border-radius: 6px;
    overflow: hidden;
    border: 2px solid rgba(0, 255, 157, 0.5);
    box-shadow: 0 0 12px rgba(0, 255, 157, 0.25), 0 4px 12px rgba(0, 0, 0, 0.5);
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.case-marker img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.case-marker:hover .case-marker-img-wrap {
    transform: scale(1.25);
    border-color: var(--accent);
    box-shadow: 0 0 24px rgba(0, 255, 157, 0.6), 0 4px 16px rgba(0, 0, 0, 0.6);
}
.case-marker-label {
    text-align: center;
    font-size: 10px;
    color: var(--text-secondary);
    margin-top: 4px;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.8);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.case-marker-ring {
    position: absolute;
    top: 25px;
    left: 50%;
    width: 84px;
    height: 62px;
    border-radius: 8px;
    border: 1px solid rgba(0, 255, 157, 0.3);
    pointer-events: none;
}

/* ===========================
   客户案例 - 详情弹窗
   =========================== */
.case-modal {
    position: fixed;
    inset: 0;
    z-index: 60;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(6, 9, 18, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.case-modal.active {
    opacity: 1;
    visibility: visible;
}
.case-modal-content {
    position: relative;
    max-width: 420px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border-hover);
    border-radius: 14px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 255, 157, 0.1);
    transform: scale(0.9) translateY(10px);
    transition: transform 0.3s ease;
}
.case-modal.active .case-modal-content {
    transform: scale(1) translateY(0);
}
.case-modal-close {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-primary);
    font-size: 20px;
    cursor: pointer;
    z-index: 2;
    transition: var(--transition);
}
.case-modal-close:hover {
    background: var(--accent);
    color: var(--bg-primary);
}
.case-modal-photo {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    cursor: pointer;
}
.case-modal-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.case-modal-photo:hover img {
    transform: scale(1.08);
}
.case-modal-photo .case-photo-zoom {
    position: absolute;
    bottom: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 255, 157, 0.2);
    border: 1px solid var(--border-hover);
    border-radius: 8px;
    color: var(--accent);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    opacity: 0;
    transition: opacity 0.3s ease;
}
.case-modal-photo:hover .case-photo-zoom {
    opacity: 1;
}
.case-modal-body {
    padding: 20px;
}
.case-modal-body h3 {
    font-size: 18px;
    color: var(--text-primary);
    margin: 10px 0;
}
.case-modal-body p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}
.case-badge {
    display: inline-block;
    padding: 3px 10px;
    background: var(--accent-dim);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 11px;
    color: var(--accent);
}
.case-metrics {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    margin-bottom: 8px;
}
.case-metric {
    flex: 1;
    text-align: center;
}
.metric-label {
    display: block;
    font-size: 11px;
    color: var(--text-tertiary);
    margin-bottom: 4px;
}
.metric-value {
    font-family: 'Orbitron', monospace;
    font-size: 14px;
    font-weight: 700;
}
.metric-value.danger {
    color: #ff4757;
}
.metric-value.safe {
    color: var(--accent);
}
.case-arrow {
    font-size: 18px;
    color: var(--text-tertiary);
}
.case-date {
    font-size: 12px;
    color: var(--text-tertiary);
    text-align: right;
}

/* ===========================
   灯箱
   =========================== */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.lightbox.active {
    opacity: 1;
    visibility: visible;
}
.lightbox-content {
    position: relative;
    max-width: 700px;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border-hover);
    border-radius: 14px;
    box-shadow: 0 20px 80px rgba(0, 0, 0, 0.6), 0 0 40px rgba(0, 255, 157, 0.15);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}
.lightbox.active .lightbox-content {
    transform: scale(1);
}
.lightbox-content img {
    width: 100%;
    height: 350px;
    object-fit: cover;
    border-radius: 14px 14px 0 0;
}
.lightbox-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-primary);
    font-size: 22px;
    cursor: pointer;
    z-index: 1;
    transition: var(--transition);
}
.lightbox-close:hover {
    background: var(--accent);
    color: var(--bg-primary);
}
.lightbox-info {
    padding: 24px;
}
.lightbox-info h3 {
    font-size: 20px;
    color: var(--text-primary);
    margin: 12px 0;
}
.lightbox-info p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

/* ===========================
   响应式
   =========================== */
@media (max-width: 968px) {
    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        background: var(--bg-secondary);
        border-left: 1px solid var(--border);
        flex-direction: column;
        padding: 80px 32px 32px;
        gap: 24px;
    }
    .nav-links.active {
        display: flex;
    }
    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }

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

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

    .footer-main {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .subsidiary-content {
        flex-direction: column;
    }

    .case-hint {
        font-size: 11px;
        padding: 6px 14px;
    }
}

@media (max-width: 600px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .about-features {
        grid-template-columns: 1fr;
    }
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    .btn {
        width: 100%;
        justify-content: center;
    }
    .section-title {
        font-size: 26px;
    }
    .nav-container {
        padding: 0 20px;
    }
    .logo-text {
        font-size: 14px;
    }
    .case-modal-content {
        max-width: calc(100vw - 40px);
    }
    .lightbox {
        padding: 20px;
    }
    .lightbox-content img {
        height: 220px;
    }
}