/* ============================================
   傲时代官网 - 高端科技感设计
   主色调：黑色 + 科技蓝渐变
   ============================================ */

/* CSS Variables */
:root {
    --primary: #00d4ff;
    --primary-dark: #0099cc;
    --primary-light: #66e5ff;
    --secondary: #7c3aed;
    --accent: #00ff88;
    --dark-bg: #0a0a0a;
    --dark-surface: #111111;
    --dark-card: #1a1a1a;
    --dark-border: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
    --gradient-glow: linear-gradient(135deg, rgba(0, 212, 255, 0.2) 0%, rgba(124, 58, 237, 0.2) 100%);
    --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    /* font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif; */
    font-family: PingFang SC, Microsoft YaHei, Segoe UI, Helvetica Neue, Tahoma, Arial, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Particles Background */
#particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.5;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--dark-border);
    padding: 15px 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-icon {
    font-size: 1.8rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: pulse 2s infinite;
}

.logo-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 900;
    letter-spacing: 2px;
}

.logo-cn {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 40px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

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

.nav-cta {
    background: var(--gradient-primary) !important;
    color: var(--dark-bg) !important;
    padding: 12px 24px !important;
    border-radius: 8px;
    font-weight: 600 !important;
}

.nav-cta:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.nav-cta::after {
    display: none !important;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: 120px 40px 80px;
    overflow: hidden;
}

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

.grid-lines {
    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: 100px 100px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(100px, 100px); }
}

.floating-elements {
    position: absolute;
    inset: 0;
}

.float-circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.float-circle.c1 {
    width: 600px;
    height: 600px;
    background: var(--primary);
    top: -200px;
    right: -200px;
}

.float-circle.c2 {
    width: 400px;
    height: 400px;
    background: var(--secondary);
    bottom: -100px;
    left: -100px;
    animation-delay: -5s;
}

.float-circle.c3 {
    width: 300px;
    height: 300px;
    background: var(--accent);
    top: 50%;
    left: 50%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(50px, 50px) scale(1.1); }
    50% { transform: translate(0, 100px) scale(0.9); }
    75% { transform: translate(-50px, 50px) scale(1.05); }
}

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

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 20px;
}

.title-line {
    display: block;
    color: var(--text-secondary);
    font-weight: 300;
    font-size: 2rem;
    margin-bottom: 10px;
}

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

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    font-weight: 300;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--gradient-primary);
    color: var(--dark-bg);
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-3px);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: transparent;
    color: var(--text-primary);
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    border: 1px solid var(--dark-border);
}

.btn-secondary:hover {
    background: var(--dark-card);
    border-color: var(--primary);
}

/* Hero Stats Compact */
.hero-stats-compact {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    padding: 30px 50px;
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 16px;
    backdrop-filter: blur(10px);
}

.stat-compact-item {
    display: flex;
    align-items: baseline;
    gap: 5px;
}

.stat-num-bold {
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-unit-bold {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label-simple {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-left: 5px;
}

.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: 0.85rem;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--dark-border);
    border-radius: 13px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { transform: translateX(-50%) translateY(0); opacity: 1; }
    100% { transform: translateX(-50%) translateY(15px); opacity: 0; }
}

/* Pain Points Section */
.pain-points {
    padding: 100px 0;
    background: var(--dark-surface);
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    background: var(--gradient-glow);
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
}

.section-title span {
    color: var(--text-secondary);
    font-weight: 300;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-top: 15px;
}

.pain-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.pain-card {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 16px;
    padding: 35px 25px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.pain-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.pain-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.1);
}

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

.pain-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-glow);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.8rem;
    color: var(--primary);
}

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

.pain-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.pain-solution {
    text-align: center;
    margin-top: 50px;
}

.pain-solution p {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.pain-solution span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
}

/* Products Section */
.products {
    padding: 100px 0;
    position: relative;
}

.product-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.tab-btn {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    color: var(--text-secondary);
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: inherit;
}

.tab-btn:hover {
    border-color: var(--primary);
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--gradient-primary);
    color: var(--dark-bg);
    border-color: transparent;
}

.product-panel {
    display: none;
}

.product-panel.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.product-info-full {
    max-width: 1200px;
    margin: 0 auto;
}

.product-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.product-header h3 {
    font-size: 2rem;
}

.product-badge {
    background: var(--gradient-glow);
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

.product-badge.live {
    background: rgba(255, 59, 48, 0.1);
    border-color: #ff3b30;
    color: #ff3b30;
}

.product-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 40px;
    max-width: 800px;
}

/* Product Features Grid - 更大气均匀展示 */
.product-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 45px;
}

.feature-category {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 16px;
    padding: 24px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.feature-category:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.12);
}

.category-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--dark-border);
    color: var(--primary);
    flex-shrink: 0;
}

.category-title i {
    font-size: 1.3rem;
}

.feature-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-content: flex-start;
    flex-grow: 1;
}

.feature-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: var(--transition);
    white-space: nowrap;
}

.feature-tag:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--gradient-glow);
}

.feature-tag i {
    font-size: 0.95rem;
    width: 18px;
    text-align: center;
}

/* Solutions Section */
.solutions {
    padding: 100px 0;
    background: var(--dark-surface);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.solution-card {
    position: relative;
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition);
}

.solution-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: 0 30px 60px rgba(0, 212, 255, 0.15);
}

.solution-content {
    position: relative;
    padding: 35px;
}

.solution-icon {
    width: 65px;
    height: 65px;
    background: var(--gradient-primary);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: var(--dark-bg);
    margin-bottom: 20px;
}

.solution-card h3 {
    font-size: 1.4rem;
    margin-bottom: 12px;
}

.solution-card > .solution-content > p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
    font-size: 0.95rem;
}

.solution-list {
    list-style: none;
}

.solution-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.solution-list i {
    color: var(--accent);
    font-size: 0.8rem;
}

/* Cases Section */
.cases {
    padding: 100px 0;
}

.cases-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.case-stat {
    text-align: center;
    padding: 35px 25px;
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 16px;
    transition: var(--transition);
}

.case-stat:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.stat-num {
    display: block;
    font-size: 2.8rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-unit {
    font-size: 1.3rem;
}

.stat-desc {
    display: block;
    color: var(--text-secondary);
    margin-top: 8px;
    font-size: 0.9rem;
}

.logos-marquee {
    overflow: hidden;
    margin-bottom: 30px;
    padding: 25px 0;
    border-top: 1px solid var(--dark-border);
    border-bottom: 1px solid var(--dark-border);
}

.logos-track {
    display: flex;
    gap: 50px;
    animation: marquee 30s linear infinite;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.logo-item {
    flex-shrink: 0;
    padding: 14px 28px;
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
}

/* About Section */
.about {
    padding: 100px 0;
    background: var(--dark-surface);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-info .section-tag {
    display: inline-block;
}

.about-info .section-title {
    text-align: left;
    margin-bottom: 25px;
}

.about-desc {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 18px;
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.highlight {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 14px;
    transition: var(--transition);
}

.highlight:hover {
    border-color: var(--primary);
}

.highlight i {
    font-size: 1.3rem;
    color: var(--primary);
    margin-top: 2px;
}

.highlight-text h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

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

/* Service Section */
.service {
    padding: 100px 0;
}

.service-features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 30px;
}

.service-card {
    text-align: center;
    padding: 35px 25px;
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 16px;
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--primary);
    transform: translateY(-8px);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.8rem;
    color: var(--dark-bg);
}

.service-card h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* CTA Section */
.cta-section {
    padding: 100px 0;
    background: var(--dark-surface);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
    animation: rotate 30s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.cta-content {
    position: relative;
    max-width: 650px;
    margin: 0 auto;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.3rem;
    margin-bottom: 12px;
}

.cta-content > p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 35px;
}

.cta-form {
    margin-bottom: 35px;
}

.contact-form {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 18px;
    padding: 35px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    margin-bottom: 18px;
}

.form-group {
    text-align: left;
}

.form-group.full {
    grid-column: 1 / -1;
}

.form-group input,
.form-group textarea {
    width: 100%;
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: 12px;
    padding: 14px 18px;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

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

.btn-submit {
    width: 100%;
    background: var(--gradient-primary);
    color: var(--dark-bg);
    border: none;
    border-radius: 12px;
    padding: 16px 30px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-family: inherit;
}

.btn-submit:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-3px);
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 45px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.info-item i {
    color: var(--primary);
    font-size: 1.1rem;
}

/* Footer */
.footer {
    background: var(--dark-bg);
    border-top: 1px solid var(--dark-border);
    padding: 70px 0 35px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 12px;
    font-size: 0.9rem;
}

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

.social-links a {
    width: 42px;
    height: 42px;
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    color: var(--dark-bg);
}

.footer-links h4 {
    font-size: 1rem;
    margin-bottom: 22px;
}

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

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid var(--dark-border);
    padding-top: 25px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-bottom p {
    margin-bottom: 4px;
}

/* Responsive Design - Desktop to Tablet */
@media (max-width: 1200px) {
    .hero-title {
        font-size: 3.2rem;
    }
    
    .title-line {
        font-size: 1.6rem;
    }
    
    .pain-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .product-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cases-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .service-features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-highlights {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Responsive Design - Mobile */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    /* Navigation */
    .nav-links {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    /* Hero Section */
    .hero {
        padding: 100px 20px 60px;
        min-height: auto;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-badge {
        font-size: 0.8rem;
        padding: 8px 16px;
        margin-bottom: 20px;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .title-line {
        font-size: 1.1rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 30px;
    }
    
    .hero-cta {
        flex-direction: column;
        gap: 15px;
    }
    
    .btn-primary, .btn-secondary {
        padding: 14px 24px;
        font-size: 0.95rem;
        justify-content: center;
    }
    
    /* Hero Stats - 更紧凑的移动端展示 */
    .hero-stats-compact {
        gap: 20px;
        padding: 20px;
    }
    
    .stat-compact-item {
        flex: 1 1 40%;
        justify-content: center;
    }
    
    .stat-num-bold {
        font-size: 1.8rem;
    }
    
    .stat-label-simple {
        font-size: 0.75rem;
        display: block;
        margin-left: 0;
        margin-top: 4px;
    }
    
    /* Section Headers */
    .section-title {
        font-size: 1.8rem;
    }
    
    /* Pain Points */
    .pain-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .pain-card {
        padding: 25px 20px;
    }
    
    /* Products */
    .product-tabs {
        flex-direction: column;
        gap: 12px;
    }
    
    .tab-btn {
        width: 100%;
        justify-content: center;
    }
    
    .product-features-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    
    .feature-category {
        padding: 20px;
    }
    
    .feature-list {
        gap: 8px;
    }
    
    .feature-tag {
        font-size: 0.85rem;
        padding: 8px 12px;
    }
    
    /* Solutions */
    .solutions-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .solution-card {
        padding: 25px 20px;
    }
    
    /* Cases */
    .cases-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
    }
    
    .case-stat {
        padding: 25px 18px;
    }
    
    .stat-num {
        font-size: 2rem;
    }
    
    /* About */
    .about-highlights {
        grid-template-columns: 1fr;
    }
    
    /* Service */
    .service-features {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    
    .service-card {
        padding: 25px 20px;
    }
    
    /* CTA */
    .cta-content h2 {
        font-size: 1.8rem;
    }
    
    .contact-form {
        padding: 25px 20px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        flex-direction: column;
        gap: 15px;
    }
    
    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 35px;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.9rem;
    }
    
    .title-line {
        font-size: 1rem;
    }
    
    .hero-stats-compact {
        flex-direction: column;
        gap: 15px;
    }
    
    .stat-compact-item {
        justify-content: center;
    }
    
    .cases-stats {
        grid-template-columns: 1fr 1fr;
    }
    
    .case-stat {
        padding: 20px 15px;
    }
    
    .stat-num {
        font-size: 1.8rem;
    }
    
    /* Logo Marquee - 移动端横向滚动 */
    .logos-marquee {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 15px;
    }
    
    .logos-track {
        display: flex;
        flex-wrap: nowrap;
        gap: 20px;
        min-width: max-content;
    }
    
    .logo-item {
        flex-shrink: 0;
        padding: 15px 20px;
        font-size: 0.85rem;
    }
    
    /* 触摸友好 */
    .tab-btn, .feature-tag, .solution-card, .case-stat {
        -webkit-tap-highlight-color: transparent;
    }
    
    /* 移动端导航优化 */
    .nav-toggle {
        padding: 10px;
        z-index: 1000;
    }
}