/* ========================================
   宇泽创新科技 - 企业官网样式系统
   科技感大气主题
   ======================================== */

/* === CSS Variables === */
:root {
    /* 主色调 - 深空蓝 */
    --color-primary: #0066ff;
    --color-primary-dark: #0044cc;
    --color-primary-light: #3399ff;
    --color-accent: #00d4ff;
    --color-accent-2: #7c3aed;
    --color-accent-3: #00ff88;

    /* 背景色 */
    --bg-darkest: #050810;
    --bg-dark: #0a0e1a;
    --bg-dark-2: #111827;
    --bg-card: rgba(15, 23, 42, 0.6);
    --bg-card-hover: rgba(20, 30, 55, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.03);
    --bg-glass-hover: rgba(255, 255, 255, 0.06);

    /* 文字色 */
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --text-tertiary: #64748b;
    --text-accent: #00d4ff;

    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #0066ff 0%, #00d4ff 100%);
    --gradient-accent: linear-gradient(135deg, #7c3aed 0%, #0066ff 100%);
    --gradient-tech: linear-gradient(135deg, #0a0e1a 0%, #111827 50%, #0a0e1a 100%);
    --gradient-glow: linear-gradient(135deg, rgba(0, 102, 255, 0.15) 0%, rgba(0, 212, 255, 0.05) 100%);
    --gradient-text: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(0, 102, 255, 0.3);
    --shadow-glow-cyan: 0 0 30px rgba(0, 212, 255, 0.3);

    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;

    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* 过渡 */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);

    /* 布局 */
    --container-max: 1280px;
    --nav-height: 84px;
}

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

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

body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
    background: var(--bg-darkest);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul, ol {
    list-style: none;
}

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

button {
    border: none;
    cursor: pointer;
    font-family: inherit;
    background: none;
    color: inherit;
}

/* === Container === */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* === Section === */
.section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

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

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--bg-glass);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--text-accent);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 16px;
    backdrop-filter: blur(10px);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(0, 102, 255, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(0, 212, 255, 0.4);
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    background: var(--bg-glass);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow-cyan);
}

.btn-ghost {
    background: var(--bg-glass);
    color: var(--text-accent);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-ghost:hover {
    background: var(--bg-glass-hover);
    border-color: rgba(0, 212, 255, 0.3);
}

/* === Navbar === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    display: flex;
    align-items: center;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(5, 8, 16, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.3rem;
    font-weight: 700;
}

.nav-logo .logo-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-sm);
    display: block;
    object-fit: cover;
    background: transparent;
    box-shadow: none;
    position: static;
    overflow: visible;
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.25));
}

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

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

.nav-menu a {
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    color: var(--text-secondary);
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--text-primary);
    background: var(--bg-glass);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

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

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

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* === Hero Section === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: var(--bg-darkest);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

/* 网格背景 */
.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(0, 102, 255, 0.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 102, 255, 0.07) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 40%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 40%, transparent 100%);
}

/* 光晕 */
.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.hero-glow-1 {
    width: 500px;
    height: 500px;
    background: var(--color-primary);
    top: -100px;
    right: -100px;
}

.hero-glow-2 {
    width: 400px;
    height: 400px;
    background: var(--color-accent-2);
    bottom: -50px;
    left: -50px;
    opacity: 0.3;
}

.hero-glow-3 {
    width: 300px;
    height: 300px;
    background: var(--color-accent);
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.2;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--nav-height) 24px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--bg-glass);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--text-accent);
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
    animation: fadeInUp 0.8s ease;
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent-3);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--color-accent-3);
    animation: pulse 2s infinite;
}

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

.hero-title {
    font-size: 3.8rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

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

.hero-title .typing-cursor {
    display: inline-block;
    width: 3px;
    height: 1em;
    background: var(--color-accent);
    margin-left: 4px;
    animation: blink 1s infinite;
    vertical-align: text-bottom;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-stats {
    display: flex;
    gap: 48px;
    justify-content: center;
    margin-top: 64px;
    animation: fadeInUp 0.8s ease 0.8s both;
}

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

.hero-stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.hero-stat-label {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    margin-top: 8px;
    letter-spacing: 1px;
}

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

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    animation: bounce 2s infinite;
}

.scroll-indicator svg {
    width: 28px;
    height: 28px;
    color: var(--text-tertiary);
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-10px); }
}

/* === Tech Particles Background === */
#particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* === Services Section === */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.service-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(0, 212, 255, 0.2);
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

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

.service-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    background: var(--gradient-glow);
    border: 1px solid rgba(0, 212, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 24px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: var(--gradient-primary);
    box-shadow: var(--shadow-glow);
    transform: scale(1.1);
}

.service-number {
    position: absolute;
    top: 20px;
    right: 24px;
    font-size: 4rem;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.03);
    line-height: 1;
}

.service-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.service-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* === Stats Section === */
.stats-section {
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.08) 0%, rgba(124, 58, 237, 0.05) 100%);
    border-top: 1px solid rgba(0, 212, 255, 0.1);
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    text-align: center;
}

.stat-item {
    position: relative;
}

.stat-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: -16px;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, transparent, rgba(0, 212, 255, 0.2), transparent);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
}

.stat-label {
    color: var(--text-secondary);
    margin-top: 12px;
    font-size: 0.95rem;
}

/* === Industry Cases === */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 20px;
}

.industry-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-md);
    padding: 32px 20px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.industry-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.industry-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    display: block;
}

.industry-name {
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.industry-card:hover .industry-name {
    color: var(--text-primary);
}

/* === Solutions === */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.solution-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.solution-card:hover {
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.solution-image {
    height: 200px;
    background: var(--gradient-tech);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.solution-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(0, 102, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 102, 255, 0.1) 1px, transparent 1px);
    background-size: 30px 30px;
}

.solution-image .icon-large {
    font-size: 3.5rem;
    z-index: 1;
    filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.5));
}

.solution-body {
    padding: 28px;
}

.solution-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.solution-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 20px;
    line-height: 1.7;
}

.solution-link {
    color: var(--text-accent);
    font-size: 0.9rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.solution-link:hover {
    gap: 12px;
    color: var(--color-accent);
}

/* === Why Choose Us === */
.why-section {
    background: var(--gradient-tech);
    position: relative;
    overflow: hidden;
}

.why-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-glow);
    opacity: 0.5;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    position: relative;
    z-index: 1;
}

.why-card {
    text-align: center;
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    background: var(--bg-glass);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.why-card:hover {
    background: var(--bg-glass-hover);
    border-color: rgba(0, 212, 255, 0.2);
    transform: translateY(-4px);
}

.why-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: var(--gradient-glow);
    border: 1px solid rgba(0, 212, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.why-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.why-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* === Process / Timeline === */
.process-section {
    position: relative;
}

.process-timeline {
    display: flex;
    justify-content: space-between;
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    flex-wrap: wrap;
    gap: 24px;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-accent-2));
    opacity: 0.3;
}

.process-step {
    flex: 1;
    min-width: 200px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.process-step-number {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    border-radius: 50%;
    background: var(--bg-dark-2);
    border: 2px solid rgba(0, 212, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-accent);
    transition: var(--transition);
    position: relative;
}

.process-step:hover .process-step-number {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow-cyan);
    transform: scale(1.1);
}

.process-step-number::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 1px solid rgba(0, 212, 255, 0.1);
    animation: ripple 2s infinite;
}

@keyframes ripple {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.3); opacity: 0; }
}

.process-step-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.process-step-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.6;
}

.process-step-desc li {
    list-style: none;
    padding: 2px 0;
}

/* === News Section === */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.news-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
}

.news-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(0, 212, 255, 0.2);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.news-image {
    height: 180px;
    background: var(--gradient-tech);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.news-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 102, 255, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 102, 255, 0.08) 1px, transparent 1px);
    background-size: 25px 25px;
}

.news-image .news-tag {
    position: relative;
    z-index: 1;
    padding: 6px 16px;
    background: var(--bg-glass);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 50px;
    font-size: 0.75rem;
    color: var(--text-accent);
    backdrop-filter: blur(10px);
}

.news-body {
    padding: 24px;
}

.news-date {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-bottom: 8px;
}

.news-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 12px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: var(--transition);
}

.news-card:hover .news-title {
    color: var(--text-accent);
}

.news-excerpt {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* === CTA Section === */
.cta-section {
    padding: var(--spacing-lg) 0;
    position: relative;
    overflow: hidden;
}

.cta-box {
    background: var(--bg-card);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg) var(--spacing-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.cta-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at center, rgba(0, 102, 255, 0.1) 0%, transparent 60%);
}

.cta-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.cta-subtitle {
    color: var(--text-secondary);
    margin-bottom: 32px;
    position: relative;
    z-index: 1;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    position: relative;
    z-index: 1;
}

/* === Footer === */
.footer {
    background: var(--bg-darkest);
    border-top: 1px solid rgba(0, 212, 255, 0.1);
    padding: var(--spacing-lg) 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: var(--spacing-lg);
}

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

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 300px;
}

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--bg-glass);
    border: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--gradient-primary);
    color: #fff;
    border-color: transparent;
    box-shadow: var(--shadow-glow);
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--text-accent);
    padding-left: 6px;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.footer-contact li .icon {
    color: var(--text-accent);
    margin-top: 2px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

.footer-bottom a {
    color: var(--text-secondary);
}

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

/* === Page Banner === */
.page-banner {
    min-height: 400px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: var(--bg-darkest);
    padding-top: var(--nav-height);
}

.page-banner .hero-grid {
    opacity: 0.5;
}

.page-banner-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.page-banner h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 16px;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-banner p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.breadcrumb a:hover {
    color: var(--text-accent);
}

/* === About Page === */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-text h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 24px;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-text p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-visual {
    position: relative;
    height: 400px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--gradient-tech);
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.about-visual::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 102, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 102, 255, 0.1) 1px, transparent 1px);
    background-size: 40px 40px;
}

.about-visual .glow-orb {
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: var(--gradient-primary);
    filter: blur(60px);
    opacity: 0.4;
    top: 30%;
    left: 30%;
    animation: floatOrb 6s ease-in-out infinite;
}

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

/* Values Cards */
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.value-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: var(--transition);
}

.value-card:hover {
    border-color: rgba(0, 212, 255, 0.2);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.value-card .service-icon {
    margin-bottom: 20px;
}

.value-card h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.value-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* === Contact Page === */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}

.contact-info-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    padding: 36px;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 28px;
}

.contact-info-item .icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: var(--gradient-glow);
    border: 1px solid rgba(0, 212, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.contact-info-item .label {
    color: var(--text-tertiary);
    font-size: 0.8rem;
    margin-bottom: 4px;
}

.contact-info-item .value {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
}

.contact-form-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    padding: 36px;
}

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

.form-group label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* === Animations on Scroll === */
.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* === Responsive === */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

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

    .hero-title {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(5, 8, 16, 0.95);
        backdrop-filter: blur(20px);
        padding: 20px;
        gap: 4px;
        border-bottom: 1px solid rgba(0, 212, 255, 0.1);
    }

    .nav-menu.open {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.open span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.open span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.open span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-stats {
        gap: 24px;
    }

    .hero-stat-number {
        font-size: 1.8rem;
    }

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

    .section {
        padding: var(--spacing-lg) 0;
    }

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

    .process-timeline {
        flex-direction: column;
    }

    .process-timeline::before {
        display: none;
    }

    .stat-item:not(:last-child)::after {
        display: none;
    }

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

    .page-banner h1 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-stats {
        flex-wrap: wrap;
    }
}

/* ========================================
   详情页样式
   ======================================== */

/* 详情页布局 */
.detail-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

/* 文章主体 */
.article-detail {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.article-detail-header {
    margin-bottom: 30px;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.article-detail-tag {
    display: inline-block;
    padding: 4px 14px;
    background: var(--gradient-primary);
    border-radius: 50px;
    font-size: 0.78rem;
    color: #fff;
    margin-bottom: 16px;
}

.article-detail-title {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.article-detail-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 0.85rem;
    color: var(--text-tertiary);
    flex-wrap: wrap;
}

.article-detail-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* 文章正文样式 */
.article-body {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.9;
}

.article-body h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
    margin: 32px 0 16px;
    padding-left: 14px;
    border-left: 3px solid var(--color-accent);
}

.article-body p {
    margin-bottom: 16px;
}

.article-body ul,
.article-body ol {
    margin: 16px 0;
    padding-left: 24px;
}

.article-body li {
    margin-bottom: 8px;
    line-height: 1.8;
}

.article-body strong {
    color: var(--text-accent);
    font-weight: 600;
}

.article-body blockquote {
    margin: 20px 0;
    padding: 16px 20px;
    background: var(--bg-glass);
    border-left: 3px solid var(--color-accent);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-secondary);
}

/* 上下篇导航 */
.article-nav {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.article-nav-item {
    flex: 1;
    padding: 16px 20px;
    background: var(--bg-glass);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-md);
    transition: var(--transition);
    text-decoration: none;
}

.article-nav-item:hover {
    background: var(--bg-glass-hover);
    border-color: rgba(0,212,255,0.2);
}

.article-nav-label {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    margin-bottom: 4px;
}

.article-nav-title {
    font-size: 0.9rem;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 侧边栏 */
.detail-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.sidebar-widget {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.sidebar-widget-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-widget-title::before {
    content: '';
    width: 4px;
    height: 18px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.sidebar-related-item {
    display: flex;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.sidebar-related-item:last-child {
    border-bottom: none;
}

.sidebar-related-item:hover {
    transform: translateX(4px);
}

.sidebar-related-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--gradient-tech);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.sidebar-related-content {
    flex: 1;
    min-width: 0;
}

.sidebar-related-title {
    font-size: 0.85rem;
    color: var(--text-primary);
    line-height: 1.5;
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: var(--transition);
}

.sidebar-related-item:hover .sidebar-related-title {
    color: var(--text-accent);
}

.sidebar-related-date {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

/* 侧边栏分类列表 */
.sidebar-category-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-category-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

.sidebar-category-list li:last-child {
    border-bottom: none;
}

.sidebar-category-list a {
    color: var(--text-secondary);
    font-size: 0.88rem;
    text-decoration: none;
    transition: var(--transition);
}

.sidebar-category-list a:hover {
    color: var(--text-accent);
}

.sidebar-category-count {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    background: var(--bg-glass);
    padding: 2px 10px;
    border-radius: 50px;
}

/* 联系卡片 */
.sidebar-contact-card {
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    text-align: center;
}

.sidebar-contact-card h4 {
    color: #fff;
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.sidebar-contact-card p {
    color: rgba(255,255,255,0.85);
    font-size: 0.82rem;
    margin-bottom: 16px;
}

.sidebar-contact-card .btn {
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.3);
    color: #fff;
    width: 100%;
}

/* 响应式 */
@media (max-width: 968px) {
    .detail-layout {
        grid-template-columns: 1fr;
    }

    .article-detail {
        padding: 24px;
    }

    .article-detail-title {
        font-size: 1.4rem;
    }

    .article-nav {
        flex-direction: column;
    }
}

/* ========================================
   SMS 仿真平台入口
   ======================================== */
.sms-banner {
    padding: 80px 0;
    background: linear-gradient(135deg, #0a0e1a 0%, #111827 50%, #0a0e1a 100%);
    border-top: 1px solid rgba(0, 212, 255, 0.1);
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.sms-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.5), transparent);
}

.sms-banner-inner {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 60px;
    align-items: center;
}

.sms-banner-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sms-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--bg-glass);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--text-accent);
    letter-spacing: 1px;
    width: fit-content;
    backdrop-filter: blur(10px);
}

.sms-badge .dot {
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--color-accent);
    animation: pulse 2s infinite;
}

.sms-title {
    font-size: 2.2rem;
    font-weight: 700;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.sms-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.sms-features {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.sms-feature {
    padding: 6px 14px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-accent);
    transition: var(--transition);
}

.sms-feature:hover {
    background: rgba(0, 212, 255, 0.15);
    border-color: rgba(0, 212, 255, 0.4);
    transform: translateY(-2px);
}

.sms-btn {
    margin-top: 8px;
    width: fit-content;
}

.sms-banner-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.sms-visual-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    width: 100%;
    max-width: 320px;
}

.sms-visual-cell {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.sms-visual-cell:hover {
    border-color: rgba(0, 212, 255, 0.4);
    color: var(--text-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow-cyan);
}

.sms-visual-accent {
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    grid-column: span 2;
    aspect-ratio: 2.5;
}

.sms-visual-accent:hover {
    box-shadow: 0 0 40px rgba(0, 102, 255, 0.5);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

@media (max-width: 768px) {
    .sms-banner-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .sms-banner-visual {
        order: -1;
    }

    .sms-visual-grid {
        max-width: 280px;
    }

    .sms-title {
        font-size: 1.6rem;
    }
}