/* ===== 基础重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 品牌色彩系统 */
    --primary: #2563EB;
    --primary-dark: #1D4ED8;
    --secondary: #06B6D4;
    --accent: #F97316;

    /* 中性色 */
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-tertiary: #94A3B8;

    /* 背景色 */
    --bg-white: #FFFFFF;
    --bg-light: #F8FAFC;
    --bg-footer: #0F172A;

    /* 边框 */
    --border: #E2E8F0;

    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 10px 30px rgba(15, 23, 42, 0.12);
    --shadow-xl: 0 20px 40px rgba(15, 23, 42, 0.15);
    --nav-shadow: 0 2px 16px rgba(15, 23, 42, 0.08);

    /* 过渡 */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.5;
    color: var(--text-primary);
    overflow-x: hidden;
    background: var(--bg-white);
    -webkit-font-smoothing: antialiased;
}

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

/* ===== 通用组件 ===== */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-title {
    font-size: 36px;
    line-height: 44px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 16px;
    line-height: 24px;
    color: var(--text-secondary);
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 按钮基础 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
}

.btn-lg {
    width: 180px;
    height: 52px;
    font-size: 16px;
}

.btn-primary {
    background: var(--primary);
    color: var(--bg-white);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    padding: 0 32px;
}

.btn-secondary:hover {
    background: var(--primary);
    color: var(--bg-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    padding: 0 24px;
    font-size: 14px;
    font-weight: 600;
}

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

.btn-white {
    background: var(--bg-white);
    color: var(--primary);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.btn-xl {
    width: 200px;
    height: 56px;
    font-size: 18px;
}

.btn-block {
    width: 100%;
    height: 48px;
    font-size: 16px;
}

/* ===== 顶部固定导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    z-index: 1000;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    height: 64px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--nav-shadow);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-weight: 700;
    font-size: 18px;
}

.brand-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 8px;
}

.nav-menu li {
    display: flex;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 6px;
    transition: var(--transition);
    position: relative;
}

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

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 16px;
    right: 16px;
    height: 2px;
    background: var(--primary);
    border-radius: 1px;
}

.nav-cta-btn {
    background: var(--primary);
    color: var(--bg-white) !important;
    width: 120px;
    height: 40px;
    border-radius: 6px;
    font-weight: 600 !important;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: 40px;
}

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

.nav-cta-btn:hover {
    background: var(--primary-dark);
}

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

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

/* ===== Hero 首屏区 ===== */
.hero {
    min-height: 800px;
    padding: 120px 0;
    background: linear-gradient(135deg, #F0F7FF 0%, #E0F2FE 50%, #F0F9FF 100%);
    position: relative;
    overflow: hidden;
}

.hero-layout {
    display: flex;
    gap: 24px;
    align-items: center;
}

.hero-left {
    width: 690px;
    flex-shrink: 0;
}

.hero-right {
    width: 486px;
    flex-shrink: 0;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    background: rgba(37, 99, 235, 0.08);
    border-radius: 20px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 48px;
    line-height: 56px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 32px;
}

.hero-subtitle {
    font-size: 18px;
    line-height: 28px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 560px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-trust {
    display: flex;
    gap: 32px;
}

.trust-item {
    width: 200px;
}

.trust-number {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.trust-label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 右侧视觉区 */
.hero-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 0;
}

.phone-mockup {
    position: relative;
    width: 280px;
    height: 560px;
    background: linear-gradient(145deg, #1a1a2e, #16213e);
    border-radius: 40px;
    padding: 12px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    z-index: 1;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #fff;
    border-radius: 30px;
    overflow: hidden;
}

.app-preview {
    padding: 20px 15px;
}

.app-header {
    margin-bottom: 15px;
}

.app-nav {
    height: 12px;
    width: 60%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 6px;
}

.app-body {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.app-card {
    height: 60px;
    background: linear-gradient(135deg, #f0f4ff, #e0f2fe);
    border-radius: 10px;
}

.floating-card {
    position: absolute;
    padding: 10px 18px;
    background: var(--bg-white);
    border-radius: 10px;
    box-shadow: var(--shadow-md);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    animation: floatCard 3s ease-in-out infinite;
    z-index: 2;
    white-space: nowrap;
}

.card-1 {
    top: 10%;
    left: -10px;
    animation-delay: 0s;
}

.card-2 {
    top: 45%;
    right: -10px;
    animation-delay: 1s;
}

.card-3 {
    bottom: 15%;
    left: 0;
    animation-delay: 2s;
}

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

/* ===== 合作客户 Logo 墙 ===== */
.partners {
    background: var(--bg-light);
    padding: 60px 0;
    min-height: 200px;
}

.partners-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 32px;
}

.partners-grid {
    display: flex;
    justify-content: center;
    gap: 40px;
    align-items: center;
}

.partner-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.partner-logo {
    width: 160px;
    height: 60px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.partner-logo svg {
    width: 24px;
    height: 24px;
    color: #fff;
}

.partner-item:hover .partner-logo {
    transform: scale(1.05);
}

.partner-item span {
    font-size: 14px;
    color: var(--text-tertiary);
}

/* ===== 核心服务模块 ===== */
.services {
    padding: 96px 0;
    min-height: 720px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    justify-content: center;
}

.service-card {
    width: 384px;
    height: 320px;
    background: var(--bg-white);
    border-radius: 8px;
    padding: 40px 32px;
    border: 1px solid var(--border);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

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

.service-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-icon svg {
    width: 32px;
    height: 32px;
    color: var(--bg-white);
}

.service-title {
    font-size: 24px;
    line-height: 32px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.service-features {
    list-style: none;
    flex: 1;
}

.service-features li {
    font-size: 16px;
    line-height: 24px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    padding-left: 16px;
    position: relative;
}

.service-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
}

.service-link {
    display: inline-block;
    margin-top: 32px;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

.service-link:hover {
    color: var(--primary-dark);
}

/* ===== 精选案例模块 ===== */
.cases {
    padding: 96px 0;
    min-height: 860px;
    background: var(--bg-light);
}

.case-filters {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 48px;
}

.filter-btn {
    padding: 8px 20px;
    border: 1px solid var(--border);
    background: var(--bg-white);
    color: var(--text-secondary);
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    font-family: inherit;
}

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

.filter-btn.active {
    background: var(--primary);
    color: var(--bg-white);
    border-color: var(--primary);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 384px);
    gap: 24px;
    row-gap: 32px;
    justify-content: center;
    margin-bottom: 48px;
}

.case-card {
    width: 384px;
    height: 300px;
    background: var(--bg-white);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--border);
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.case-image {
    width: 384px;
    height: 220px;
    position: relative;
    overflow: hidden;
}

.case-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.case-card:hover .case-overlay {
    opacity: 1;
}

.view-detail {
    padding: 8px 20px;
    background: var(--bg-white);
    color: var(--primary);
    border-radius: 6px;
    font-weight: 600;
    font-size: 14px;
    transform: translateY(10px);
    transition: var(--transition);
}

.case-card:hover .view-detail {
    transform: translateY(0);
}

.case-info {
    height: 80px;
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.case-tag {
    display: inline-block;
    font-size: 14px;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 4px;
}

.case-info h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.case-info p {
    font-size: 14px;
    color: var(--text-secondary);
}

.cases-more {
    text-align: center;
}

/* ===== 核心优势模块 ===== */
.advantages {
    padding: 96px 0;
    min-height: 640px;
}

.advantages-layout {
    display: flex;
    gap: 40px;
    align-items: center;
}

.advantages-left {
    width: 580px;
    flex-shrink: 0;
}

.advantages-left .section-title {
    text-align: left;
    margin-bottom: 48px;
}

.advantage-item {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
}

.advantage-num {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    flex-shrink: 0;
    width: 32px;
}

.advantage-text h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.advantage-text p {
    font-size: 16px;
    line-height: 24px;
    color: var(--text-secondary);
}

.advantages-right {
    width: 580px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.advantages-visual {
    width: 580px;
    height: 400px;
    border-radius: 12px;
    overflow: hidden;
    background: linear-gradient(135deg, #F0F7FF 0%, #E0F2FE 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    padding: 40px;
}

.visual-stat {
    text-align: center;
    padding: 24px;
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.visual-number {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.visual-label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ===== 标准化开发流程 ===== */
.process {
    padding: 96px 0;
    min-height: 560px;
    background: var(--bg-light);
}

.process-timeline {
    display: flex;
    justify-content: center;
    gap: 40px;
    position: relative;
    padding-top: 32px;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 64px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: var(--border);
    z-index: 0;
}

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

.step-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.step-icon svg {
    width: 28px;
    height: 28px;
    color: var(--bg-white);
}

.process-step h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.process-step p {
    font-size: 14px;
    line-height: 20px;
    color: var(--text-secondary);
}

/* ===== 客户评价模块 ===== */
.testimonials {
    padding: 96px 0;
    min-height: 520px;
    background: var(--bg-light);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 384px);
    gap: 24px;
    justify-content: center;
}

.testimonial-card {
    width: 384px;
    height: 240px;
    background: var(--bg-white);
    border-radius: 8px;
    padding: 32px;
    border: 1px solid var(--border);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.testimonial-card:hover {
    box-shadow: var(--shadow-md);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-weight: 600;
    font-size: 18px;
    flex-shrink: 0;
}

.author-info h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.author-info p {
    font-size: 14px;
    color: var(--text-secondary);
}

.testimonial-text {
    font-size: 16px;
    line-height: 24px;
    color: var(--text-secondary);
    flex: 1;
}

.testimonial-stars {
    color: #FBBF24;
    font-size: 16px;
    letter-spacing: 2px;
    margin-top: auto;
}

/* ===== 常见问题 FAQ ===== */
.faq {
    padding: 96px 0;
    min-height: 640px;
}

.faq-layout {
    display: flex;
    gap: 24px;
}

.faq-left {
    width: 300px;
    flex-shrink: 0;
}

.faq-left .section-title {
    font-size: 24px;
    line-height: 32px;
    margin-bottom: 24px;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.faq-item {
    height: 56px;
    padding: 0 16px;
    display: flex;
    align-items: center;
    font-size: 16px;
    color: var(--text-secondary);
    cursor: pointer;
    border-left: 4px solid transparent;
    transition: var(--transition);
    border-radius: 0 6px 6px 0;
}

.faq-item:hover {
    background: var(--bg-light);
}

.faq-item.active {
    border-left-color: var(--primary);
    color: var(--primary);
    font-weight: 600;
    background: rgba(37, 99, 235, 0.05);
}

.faq-right {
    flex: 1;
}

.faq-answer {
    display: none;
}

.faq-answer.active {
    display: block;
}

.faq-answer h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.faq-answer p {
    font-size: 16px;
    line-height: 28px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.faq-link {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

.faq-link:hover {
    color: var(--primary-dark);
}

/* ===== 底部 CTA 转化区 ===== */
.cta-section {
    padding: 80px 0;
    min-height: 320px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}

.cta-layout {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cta-left {
    width: 700px;
}

.cta-left h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--bg-white);
    margin-bottom: 20px;
}

.cta-left p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
}

.cta-right {
    width: 500px;
    text-align: right;
}

.cta-note {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 16px;
}

/* ===== 联系我们 ===== */
.contact {
    padding: 96px 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contact-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: var(--bg-white);
}

.contact-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

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

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

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

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    height: 44px;
    padding: 0 16px;
    border: 1px solid var(--border);
    background: var(--bg-white);
    color: var(--text-primary);
    border-radius: 6px;
    font-size: 16px;
    transition: var(--transition);
    font-family: inherit;
}

.form-group textarea {
    height: auto;
    padding: 12px 16px;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

/* ===== 页脚 ===== */
.footer {
    background: var(--bg-footer);
    padding: 80px 0 0;
    min-height: 400px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 282px);
    gap: 24px;
    margin-bottom: 60px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.footer-brand .logo-icon {
    width: 40px;
    height: 40px;
}

.footer-brand h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--bg-white);
}

.footer-section > p {
    font-size: 14px;
    line-height: 24px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-section h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--bg-white);
    margin-bottom: 24px;
}

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

.footer-section ul li {
    margin-bottom: 16px;
}

.footer-section ul li,
.footer-section a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--bg-white);
}

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

.social-link {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
    border-radius: 6px;
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary);
    color: var(--bg-white);
}

.footer-bottom {
    height: 60px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-bottom p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
}

/* ===== 悬浮咨询按钮 ===== */
.floating-consult {
    position: fixed;
    right: 24px;
    bottom: 100px;
    width: 56px;
    height: 56px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(249, 115, 22, 0.4);
    z-index: 999;
    transition: var(--transition);
}

.floating-consult:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(249, 115, 22, 0.5);
}

.consult-tooltip {
    position: absolute;
    right: 68px;
    background: var(--text-primary);
    color: var(--bg-white);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.floating-consult:hover .consult-tooltip {
    opacity: 1;
}

.consult-tooltip::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    border-left: 6px solid var(--text-primary);
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
}

.consult-icon svg {
    width: 28px;
    height: 28px;
    color: var(--bg-white);
}

/* ===== 滚动动画 ===== */
[data-animate] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 响应式适配 ===== */
@media (max-width: 1365px) {
    .container {
        max-width: 960px;
    }

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

    .service-card,
    .case-card,
    .pricing-card,
    .testimonial-card {
        width: 100%;
    }

    .case-image {
        width: 100%;
    }

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

    .hero-left {
        width: 55%;
    }

    .hero-right {
        width: 45%;
    }

    .advantages-layout {
        flex-direction: column;
    }

    .advantages-left,
    .advantages-right {
        width: 100%;
    }

    .advantages-visual {
        width: 100%;
    }

    .faq-layout {
        flex-direction: column;
    }

    .faq-left {
        width: 100%;
    }

    .cta-left {
        width: 60%;
    }

    .cta-right {
        width: 40%;
    }
}

@media (max-width: 1023px) {
    .container {
        max-width: 720px;
    }

    .section-title {
        font-size: 28px;
        line-height: 36px;
    }

    .hero-title {
        font-size: 36px;
        line-height: 44px;
    }

    .services-grid,
    .cases-grid,
    .pricing-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .hero-layout {
        flex-direction: column;
    }

    .hero-left,
    .hero-right {
        width: 100%;
    }

    .hero-right {
        display: none;
    }

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

    .process-timeline {
        flex-direction: column;
        gap: 32px;
    }

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

    .process-step {
        width: 100%;
    }

    .cta-layout {
        flex-direction: column;
        gap: 32px;
        text-align: center;
    }

    .cta-left,
    .cta-right {
        width: 100%;
        text-align: center;
    }

    .cta-right {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

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

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

    .partners-grid {
        flex-wrap: wrap;
        gap: 24px;
    }

    .partner-logo {
        width: 120px;
        height: 48px;
    }
}

@media (max-width: 767px) {
    .nav-menu {
        display: none;
    }

    .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        padding: 24px;
        box-shadow: var(--shadow-lg);
        gap: 8px;
    }

    .nav-menu.active a {
        padding: 12px 16px;
        width: 100%;
    }

    .nav-cta-btn {
        margin-left: 0;
        margin-top: 8px;
    }

    .hamburger {
        display: flex;
    }

    .hero {
        padding: 100px 0 60px;
        min-height: auto;
    }

    .hero-title {
        font-size: 28px;
        line-height: 36px;
    }

    .hero-subtitle {
        font-size: 16px;
        line-height: 24px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn-lg {
        width: 100%;
    }

    .hero-trust {
        flex-direction: column;
        gap: 16px;
    }

    .trust-item {
        width: 100%;
    }

    .section-title {
        font-size: 24px;
        line-height: 32px;
    }

    .case-filters {
        flex-wrap: wrap;
    }

    .filter-btn {
        padding: 6px 14px;
        font-size: 12px;
    }

    .floating-consult {
        right: 16px;
        bottom: 80px;
        width: 48px;
        height: 48px;
    }

    .consult-tooltip {
        display: none;
    }

    .pricing-popular {
        transform: none;
    }
}