/* ==================== 基础样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #06b6d4;
    --accent: #f59e0b;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --text: #f1f5f9;
    --text-muted: #cbd5e1;
    --glass-bg: rgba(255, 255, 255, 0.12);
    --glass-border: rgba(255, 255, 255, 0.16);
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}

html {
    scroll-behavior: smooth;
    overflow-y: scroll;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

html::-webkit-scrollbar {
    display: none;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--dark);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    overflow-y: scroll;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

body::-webkit-scrollbar {
    display: none;
}

/* ==================== 视频背景 ==================== */
.video-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.video-background video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-width: 100%;
    min-height: 100%;
}


.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.25);
    pointer-events: none;
}

/* ==================== 粒子背景 ==================== */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    pointer-events: none;
}

/* 背景光晕效果 */
.hero::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
    pointer-events: none;
    z-index: -1;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 10%;
    right: 10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
    pointer-events: none;
    z-index: -1;
}

.section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(99, 102, 241, 0.05) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

/* ==================== 容器 ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    position: relative;
    padding: 120px 0;
    z-index: 1;
}

/* ==================== 玻璃拟态 ==================== */
.glass {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.16) 0%, rgba(255, 255, 255, 0.06) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(20px);
    padding: 12px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text);
}

.logo img.nav-brand-logo {
    height: 36px;
    width: auto;
    object-fit: contain;
    border-radius: 0;
}

.logo span {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s ease;
}

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

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

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: 0.3s;
}

/* ==================== 按钮 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    border: 2px solid var(--glass-border);
}

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

.btn-large {
    padding: 18px 48px;
    font-size: 1.1rem;
}

.btn .btn-icon {
    display: inline-block;
    margin-right: 8px;
    font-size: 1.1em;
}

/* ==================== Hero区域 ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 24px 60px;
    position: relative;
    z-index: 1;
    background: rgba(15, 23, 42, 0.35);
}

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

.hero-slogan {
    max-width: 600px;
    width: 100%;
    height: auto;
    margin-bottom: 24px;
    object-fit: contain;
    user-select: none;
    -webkit-user-drag: none;
    -webkit-touch-callout: none;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--secondary);
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff 0%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 48px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

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

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    animation: bounce 2s infinite;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    position: relative;
}

.mouse::after {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 6px;
    background: var(--text-muted);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

.scroll-indicator span {
    font-size: 0.65rem;
    color: var(--text-muted);
}

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

@keyframes scroll {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0.3; transform: translateX(-50%) translateY(6px); }
}

/* ==================== 区块标题 ==================== */
.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-tag {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(6, 182, 212, 0.15) 100%);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--secondary);
    margin-bottom: 20px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.section-header h2 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff 0%, var(--text) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ==================== 痛点解决 ==================== */
.problems-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.problem-card {
    padding: 40px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.problem-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #ef4444, #f59e0b);
    opacity: 0;
    transition: opacity 0.3s;
}

.problem-card:hover {
    transform: translateY(-12px);
    border-color: rgba(239, 68, 68, 0.3);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.problem-card:hover::before {
    opacity: 1;
}

.problem-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.problem-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: #f87171;
}

.problem-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.solution {
    padding: 12px 16px;
    background: rgba(34, 197, 94, 0.1);
    border-radius: 12px;
    font-size: 0.875rem;
    color: #4ade80;
}

/* ==================== 产品服务 ==================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.service-card {
    padding: 40px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient);
    opacity: 0;
    transition: opacity 0.3s;
}

.service-card:hover {
    transform: translateY(-12px);
    border-color: var(--primary);
    box-shadow: 0 20px 60px rgba(99, 102, 241, 0.2);
}

.service-card:hover::before {
    opacity: 1;
}

.service-card.featured {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
}

.service-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 12px;
    background: var(--gradient);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-muted);
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-features {
    list-style: none;
}

.service-features li {
    padding: 8px 0;
    color: var(--text-muted);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.service-features li::before {
    content: '✓';
    color: var(--secondary);
    font-weight: bold;
}

/* ==================== 合作优势 ==================== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
    margin-bottom: 80px;
}

.advantage-item {
    text-align: center;
    padding: 24px;
}

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

.advantage-item h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.advantage-item p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.process-flow {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 48px;
    text-align: center;
}

.process-flow h3 {
    font-size: 1.5rem;
    margin-bottom: 40px;
}

.flow-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    flex-wrap: wrap;
}

.flow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 0 24px;
}

.step-circle {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient);
    border-radius: 50%;
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
}

.flow-step span {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.flow-line {
    width: 60px;
    height: 2px;
    background: var(--glass-border);
}

/* ==================== 联系我们 ==================== */
.contact {
    text-align: center;
}

.contact-hotline {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hotline-icon {
    font-size: 2rem;
}

.hotline-label {
    font-size: 1.25rem;
    color: var(--text-muted);
}

.hotline-number {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

.qr-codes-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 600px;
    margin: 30px auto 50px;
}

.qr-item {
    padding: 24px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.qr-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.qr-item img {
    width: 120px;
    height: 120px;
    border-radius: 12px;
    margin: 0 auto 12px;
    object-fit: cover;
}

.qr-item p {
    color: var(--text);
    font-weight: 500;
    font-size: 1rem;
    margin-top: 10px;
}

.contact-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 20px;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 60px;
    padding: 60px;
    align-items: center;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.contact-info > p {
    color: var(--text-muted);
    margin-bottom: 32px;
    font-size: 1.1rem;
}

.contact-methods {
    display: flex;
    gap: 32px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

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

.method-icon {
    font-size: 2rem;
}

.method strong {
    display: block;
    margin-bottom: 4px;
}

.method p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.contact-qr {
    text-align: center;
}

.contact-qr img {
    width: 180px;
    height: 180px;
    border-radius: 16px;
    margin-bottom: 12px;
}

.contact-qr p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ==================== 页脚 ==================== */
.footer {
    background: linear-gradient(180deg, var(--dark) 0%, var(--dark-light) 100%);
    padding: 100px 0 40px;
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--glass-border);
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 300px;
    background: radial-gradient(ellipse, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand img {
    width: auto;
    height: 48px;
    max-width: 160px;
    object-fit: contain;
    margin-bottom: 16px;
}

.footer-brand img.brand-logo {
    border-radius: 0;
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 16px;
}

.footer-social {
    padding-top: 16px;
    border-top: 1px solid var(--glass-border);
}

.footer-social span {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

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

.footer-col a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    padding: 6px 0;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid var(--glass-border);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 8px;
}

.footer-bottom a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* ==================== 响应式设计 ==================== */
@media (max-width: 992px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(15, 23, 42, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-toggle {
        display: flex;
    }

    .hero-stats {
        gap: 40px;
    }

    .stat-num {
        font-size: 2.5rem;
    }

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

    .contact-wrapper {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .contact-methods {
        justify-content: center;
    }

    .footer-main {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .section-header h2 {
        font-size: 1.75rem;
    }

    .section-header p {
        font-size: 1rem;
    }

    .hero {
        padding: 100px 20px 40px;
        min-height: 100vh;
    }

    /* 移动端视频背景优化 - 确保视频布满整个屏幕并随页面滚动 */
    .video-background {
        position: absolute;
        width: 100vw;
        height: 100vh;
    }

    .video-background video {
        position: absolute;
        top: 0;
        left: 0;
        object-fit: cover;
        width: 100vw;
        height: 100vh;
        min-width: 100%;
        min-height: 100%;
    }

    .hero-slogan {
        max-width: 320px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-desc {
        font-size: 1rem;
        margin-bottom: 32px;
    }

    .hero-stats {
        gap: 24px;
        margin-bottom: 32px;
    }

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

    .stat-label {
        font-size: 0.75rem;
    }

    /* 移动端滚动提示优化 - 减小尺寸避免遮挡按钮 */
    .mouse {
        width: 20px;
        height: 32px;
        border: 2px solid var(--text-muted);
        border-radius: 10px;
    }

    .mouse::after {
        top: 6px;
        width: 3px;
        height: 6px;
    }

    .scroll-indicator span {
        font-size: 0.65rem;
    }

    .scroll-indicator {
        display: block;
        position: absolute;
        bottom: 20px;
        left: 50%;
        transform: translateX(-50%);
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 8px;
        animation: bounce 2s infinite;
    }

    .problems-grid,
    .services-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .problem-card,
    .service-card {
        padding: 24px;
    }

    .problem-icon,
    .service-icon {
        font-size: 2rem;
    }

    .problem-card h3,
    .service-card h3 {
        font-size: 1.125rem;
    }

    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
        margin-bottom: 40px;
    }

    .advantage-item {
        padding: 16px;
    }

    .advantage-num {
        font-size: 2rem;
    }

    .advantage-item h3 {
        font-size: 1rem;
    }

    .advantage-item p {
        font-size: 0.8rem;
    }

    .process-flow {
        padding: 32px 20px;
    }

    .flow-steps {
        flex-direction: column;
        gap: 16px;
    }

    .flow-line {
        width: 2px;
        height: 24px;
    }

    .step-circle {
        width: 48px;
        height: 48px;
        font-size: 1rem;
    }

    .contact-wrapper {
        padding: 40px 20px 60px;
    }

    .contact-info h2 {
        font-size: 1.75rem;
    }

    .contact-qr img {
        width: 140px;
        height: 140px;
    }

    .qr-codes-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
        max-width: 600px;
        margin: 30px auto 50px;
    }

    .qr-item {
        padding: 24px;
        text-align: center;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .qr-item:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    }

    .qr-item img {
        width: 120px;
        height: 120px;
        margin: 0 auto 12px;
    }

    .hotline-number {
        font-size: 1.5rem;
    }

    .footer {
        padding: 60px 0 32px;
    }

    .footer-links {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }

    .footer-col h4 {
        font-size: 0.875rem;
        margin-bottom: 12px;
    }

    .footer-col a {
        font-size: 0.8rem;
        padding: 4px 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero {
        padding: 90px 16px 30px;
    }

    .hero-slogan {
        max-width: 260px;
    }

    .logo img.nav-brand-logo {
        height: 28px;
    }

    .hero-badge {
        font-size: 0.75rem;
        padding: 6px 14px;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .hero-stats {
        flex-direction: row;
        justify-content: center;
        gap: 20px;
    }

    .stat-num {
        font-size: 1.5rem;
    }

    .btn {
        width: 100%;
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
        gap: 12px;
    }

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

    .qr-codes-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
        max-width: 500px;
        margin: 25px auto 40px;
    }

    .qr-item {
        padding: 20px;
        text-align: center;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .qr-item:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    }

    .qr-item img {
        width: 100px;
        height: 100px;
        margin: 0 auto 10px;
    }

    .qr-item p {
        font-size: 0.85rem;
        margin-top: 8px;
    }

    .hotline-number {
        font-size: 1.25rem;
    }

    .hotline-label {
        font-size: 1rem;
    }

    .contact-actions {
        margin-top: 25px;
    }

    .contact-actions .btn {
        width: 100%;
    }

    .footer-main {
        gap: 32px;
        margin-bottom: 32px;
    }

    .footer-links {
        grid-template-columns: 1fr 1fr 1fr;
        text-align: left;
    }

    .footer-bottom {
        padding-top: 24px;
    }

    .footer-bottom p {
        font-size: 0.75rem;
    }
}