/* 
   深圳帆达云供应链有限公司 - 官方网站样式表
   Design System & Premium Aesthetics
*/

/* ----------------------------------------------------
   1. 设计系统 & CSS 变量定义 (Design System Tokens)
   ---------------------------------------------------- */
:root {
    /* 调色板 Palette */
    --color-primary: #0a369d;         /* 科技宝蓝色 */
    --color-primary-rgb: 10, 54, 157;
    --color-secondary: #635bff;       /* 极光紫 */
    --color-secondary-rgb: 99, 91, 255;
    --color-accent: #00d4b2;          /* 科技青色 */
    --color-accent-rgb: 0, 212, 178;
    
    --color-dark: #0a1128;            /* 极暗夜空蓝 (主标题/深色背景) */
    --color-text-main: #334155;       /* 正文字体颜色 (Slate 700) */
    --color-text-muted: #64748b;      /* 辅助描述字体 (Slate 500) */
    --color-bg-light: #f8fafc;        /* 亮面背景色 (Slate 50) */
    --color-bg-white: #ffffff;
    --color-border: #e2e8f0;          /* 边框色 */
    
    /* 渐变色 Gradients */
    --gradient-hero: linear-gradient(135deg, #0f172a 0%, #0a1128 50%, #030712 100%);
    --gradient-text: linear-gradient(135deg, #635bff 0%, #00d4b2 100%);
    --gradient-primary: linear-gradient(135deg, #0a369d 0%, #635bff 100%);
    --gradient-card-hover: linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(99, 91, 255, 0.03) 100%);
    
    /* 阴影 & 圆角 Shadows & Border Radius */
    --shadow-sm: 0 2px 8px -1px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 12px 24px -4px rgba(10, 54, 157, 0.06), 0 4px 12px -2px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 20px 40px -10px rgba(10, 54, 157, 0.12), 0 10px 20px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 25px 0 rgba(0, 212, 178, 0.35);
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;
    
    /* 字体系统 Typography */
    --font-sans: 'Inter', 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
    
    /* 容器布局 Widths */
    --container-width: 1200px;
    --header-height: 80px;
    
    /* 转换动画 Transitions */
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.2s ease;
}

/* ----------------------------------------------------
   2. 全局重置与基础样式 (Global Reset & Base)
   ---------------------------------------------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-sans);
    color: var(--color-text-main);
    background-color: var(--color-bg-light);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

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

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

button, input, textarea {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    background: none;
}

/* 统一小标签 & 标题 */
.section-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 60px auto;
}

.section-tag {
    display: inline-block;
    font-family: 'Outfit', sans-serif;
    font-size: 13px;
    font-weight: 700;
    color: var(--color-secondary);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 12px;
    padding: 4px 12px;
    background-color: rgba(99, 91, 255, 0.08);
    border-radius: var(--radius-full);
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-dark);
    line-height: 1.3;
    margin-bottom: 18px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--color-text-muted);
}

/* 按钮通用组件 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-bg-white);
    box-shadow: 0 4px 14px rgba(99, 91, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 91, 255, 0.6);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-bg-white);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* ----------------------------------------------------
   3. 磨砂玻璃导航栏 (Header Styles)
   ---------------------------------------------------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    display: flex;
    align-items: center;
    z-index: 1000;
    transition: var(--transition-smooth);
    border-bottom: 1px solid transparent;
}

/* 滚动后激活状态 */
.site-header.scrolled {
    height: 70px;
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(10, 54, 157, 0.08);
    box-shadow: var(--shadow-sm);
}

.header-container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon-img {
    width: 42px;
    height: 42px;
    object-fit: contain;
    filter: drop-shadow(0 4px 10px rgba(10, 54, 157, 0.15));
    transition: var(--transition-smooth);
}

.logo-icon-img:hover {
    transform: rotate(8deg) scale(1.05);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: 18px;
    font-weight: 800;
    color: var(--color-dark);
    letter-spacing: 0.5px;
    line-height: 1.1;
}

.brand-sub {
    font-family: 'Outfit', sans-serif;
    font-size: 9px;
    font-weight: 700;
    color: var(--color-text-muted);
    letter-spacing: 1.5px;
    margin-top: 2px;
}

/* 导航链接 */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-item {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-main);
    position: relative;
    padding: 6px 0;
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition-fast);
}

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

.nav-item:hover::after, .nav-item.active::after {
    width: 100%;
}

.btn-contact-nav {
    background-color: var(--color-primary);
    color: var(--color-bg-white) !important;
    padding: 8px 20px !important;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
}

.btn-contact-nav:hover {
    background-color: var(--color-secondary);
    transform: translateY(-1px);
}

.btn-contact-nav::after {
    display: none;
}

/* 导航栏深色适应（当导航栏在未滑动的Hero暗色区时） */
.site-header:not(.scrolled) .nav-item {
    color: rgba(255, 255, 255, 0.8);
}
.site-header:not(.scrolled) .nav-item:hover,
.site-header:not(.scrolled) .nav-item.active {
    color: var(--color-bg-white);
}
.site-header:not(.scrolled) .nav-item::after {
    background-color: var(--color-accent);
}
.site-header:not(.scrolled) .brand-name {
    color: var(--color-bg-white);
}
.site-header:not(.scrolled) .brand-sub {
    color: rgba(255, 255, 255, 0.5);
}

.menu-toggle {
    display: none;
    color: var(--color-dark);
    cursor: pointer;
}

.site-header:not(.scrolled) .menu-toggle {
    color: var(--color-bg-white);
}

/* ----------------------------------------------------
   4. 首屏部分 (Hero Section)
   ---------------------------------------------------- */
.hero-section {
    position: relative;
    background: var(--gradient-hero);
    padding-top: calc(var(--header-height) + 60px);
    padding-bottom: 100px;
    overflow: hidden;
    color: var(--color-bg-white);
}

/* 大气发光背景 */
.hero-glow {
    position: absolute;
    top: -150px;
    right: -100px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 91, 255, 0.15) 0%, rgba(0, 212, 178, 0.05) 50%, rgba(0,0,0,0) 100%);
    z-index: 1;
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
    align-items: center;
    position: relative;
    z-index: 2;
}

/* 标语文字 */
.hero-content {
    max-width: 620px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}

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

.badge-text {
    font-size: 13px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.hero-subtitle {
    font-size: 18px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 36px;
}

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

/* 数据展示 */
.hero-stats {
    display: flex;
    gap: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 32px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-num {
    font-family: 'Outfit', sans-serif;
    font-size: 32px;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1.1;
    margin-bottom: 6px;
}

.stat-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

/* 首屏右侧插图与浮动卡片 */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.visual-wrapper {
    position: relative;
    width: 100%;
    max-width: 480px;
}

.hero-img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    filter: drop-shadow(0 0 15px rgba(99, 91, 255, 0.15));
    animation: float 6s ease-in-out infinite;
}

/* 浮动装饰卡片 */
.floating-card {
    position: absolute;
    background: rgba(10, 17, 40, 0.75);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 12px 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
    animation: floatCard 4s ease-in-out infinite alternate;
}

.floating-card h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-bg-white);
}

.floating-card p {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.6);
}

.floating-card .card-icon {
    width: 28px;
    height: 28px;
    color: var(--color-accent);
}

.floating-card.c1 {
    top: 15%;
    left: -20px;
    animation-delay: 0.5s;
}

.floating-card.c2 {
    bottom: 15%;
    right: -25px;
    animation-delay: 1.5s;
}

/* ----------------------------------------------------
   5. 核心业务 Section (Core Services)
   ---------------------------------------------------- */
.services-section {
    padding: 120px 0;
    background-color: var(--color-bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.service-card {
    background-color: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-card-hover);
    opacity: 0;
    transition: var(--transition-smooth);
    z-index: 1;
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(99, 91, 255, 0.2);
}

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

/* 业务卡片图标 */
.service-icon-box {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--color-bg-white);
    position: relative;
    z-index: 2;
}

.service-icon-box i {
    width: 28px;
    height: 28px;
}

.bg-purple { background: linear-gradient(135deg, #635bff 0%, #8f8aff 100%); }
.bg-blue { background: linear-gradient(135deg, #0a369d 0%, #4364f7 100%); }
.bg-cyan { background: linear-gradient(135deg, #00c9ff 0%, #92fe9d 100%); }
.bg-green { background: linear-gradient(135deg, #00d4b2 0%, #00b48f 100%); }

.service-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 16px;
    position: relative;
    z-index: 2;
}

.service-desc {
    font-size: 15px;
    color: var(--color-text-muted);
    margin-bottom: 24px;
    line-height: 1.7;
    position: relative;
    z-index: 2;
}

.service-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: relative;
    z-index: 2;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--color-text-main);
    font-weight: 500;
}

.icon-check {
    width: 18px;
    height: 18px;
    color: var(--color-accent);
    flex-shrink: 0;
}

/* ----------------------------------------------------
   6. SaaS 系统展厅 Section (SaaS Showcase)
   ---------------------------------------------------- */
.saas-section {
    padding: 120px 0;
    background-color: var(--color-bg-white);
}

/* Tab控制器 */
.saas-tabs-control {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 50px;
}

.tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 15px;
    color: var(--color-text-muted);
    background-color: var(--color-bg-light);
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.tab-btn i {
    width: 20px;
    height: 20px;
    transition: var(--transition-fast);
}

.tab-btn:hover {
    color: var(--color-primary);
    background-color: rgba(10, 54, 157, 0.04);
}

.tab-btn.active {
    color: var(--color-bg-white);
    background: var(--gradient-primary);
    border-color: transparent;
    box-shadow: 0 10px 20px -5px rgba(10, 54, 157, 0.35);
}

/* Tab面板内容 */
.saas-tabs-content {
    position: relative;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: slideUpFade 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.saas-pane-grid {
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: 60px;
    align-items: center;
}

.saas-info h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 16px;
}

.saas-intro {
    font-size: 16px;
    color: var(--color-text-muted);
    margin-bottom: 32px;
}

/* 特点列表 */
.feature-bullets {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.bullet-item {
    display: flex;
    gap: 16px;
}

.bullet-icon {
    width: 44px;
    height: 44px;
    background-color: rgba(99, 91, 255, 0.08);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-secondary);
    flex-shrink: 0;
}

.bullet-icon i {
    width: 20px;
    height: 20px;
}

.bullet-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 6px;
}

.bullet-item p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* 浏览器窗口 Mockup */
.saas-preview {
    perspective: 1000px;
}

.mockup-window {
    background-color: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transform: rotateY(-3deg) rotateX(1deg);
    transition: var(--transition-smooth);
}

.mockup-window:hover {
    transform: rotateY(0deg) rotateX(0deg) translateY(-4px);
}

.window-header {
    background-color: #f1f5f9;
    border-bottom: 1px solid var(--color-border);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.window-header .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.window-header .dot.red { background-color: #ef4444; }
.window-header .dot.yellow { background-color: #eab308; }
.window-header .dot.green { background-color: #22c55e; }

.window-title {
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-left: 12px;
}

.window-body {
    background-color: var(--color-bg-white);
    padding: 1px;
}

.preview-img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* ----------------------------------------------------
   7. 协同流程 Section (Business Flow)
   ---------------------------------------------------- */
.flow-section {
    padding: 120px 0;
    background-color: var(--color-bg-light);
    overflow: hidden;
}

.flow-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    margin-top: 60px;
}

.flow-step {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    z-index: 2;
    padding: 0 10px;
}

.step-icon {
    width: 68px;
    height: 68px;
    border-radius: 50%;
    background-color: var(--color-bg-white);
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
    margin-bottom: 16px;
}

.step-icon i {
    width: 26px;
    height: 26px;
}

.step-num {
    font-family: 'Outfit', sans-serif;
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.flow-step h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 6px;
}

.flow-step p {
    font-size: 13px;
    color: var(--color-text-muted);
    line-height: 1.4;
}

/* 连线 */
.flow-line-connector {
    flex-grow: 1;
    height: 2px;
    background-color: var(--color-border);
    margin: 0 -15px;
    position: relative;
    top: -46px; /* Align with center of the step-icon */
    z-index: 1;
}

.flow-progress {
    height: 100%;
    width: 0;
    background: var(--gradient-primary);
    transition: width 1s ease;
}

/* 激活状态 */
.flow-step.active .step-icon {
    border-color: var(--color-secondary);
    color: var(--color-secondary);
    box-shadow: 0 0 0 4px rgba(99, 91, 255, 0.15);
}

.flow-step.completed .step-icon {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
    color: var(--color-bg-white);
}

/* ----------------------------------------------------
   8. 实力优势 & 合作平台 Section (Advantages & Ecosystem)
   ---------------------------------------------------- */
.advantages-section {
    padding: 120px 0;
    background-color: var(--color-bg-white);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 80px;
}

.adv-card {
    background-color: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 30px;
    transition: var(--transition-smooth);
}

.adv-card:hover {
    transform: translateY(-4px);
    border-color: rgba(10, 54, 157, 0.15);
    background-color: var(--color-bg-white);
    box-shadow: var(--shadow-md);
}

.adv-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-bg-white);
    margin-bottom: 20px;
}

.adv-icon i {
    width: 24px;
    height: 24px;
}

.adv-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 12px;
}

.adv-card p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* 平台无限轮播 */
.partner-platforms {
    border-top: 1px solid var(--color-border);
    padding-top: 60px;
    text-align: center;
}

.partner-platforms h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-muted);
    margin-bottom: 30px;
}

.logo-carousel {
    overflow: hidden;
    white-space: nowrap;
    position: relative;
    padding: 10px 0;
}

/* 模糊遮罩 */
.logo-carousel::before, .logo-carousel::after {
    content: '';
    position: absolute;
    top: 0;
    width: 150px;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}
.logo-carousel::before {
    left: 0;
    background: linear-gradient(to right, #ffffff, rgba(255, 255, 255, 0));
}
.logo-carousel::after {
    right: 0;
    background: linear-gradient(to left, #ffffff, rgba(255, 255, 255, 0));
}

.logo-track {
    display: inline-flex;
    gap: 50px;
    animation: marquee 25s linear infinite;
}

.logo-item {
    font-family: 'Outfit', sans-serif;
    font-size: 20px;
    font-weight: 700;
    color: #94a3b8;
    background-color: var(--color-bg-light);
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    border: 1px dashed var(--color-border);
    transition: var(--transition-fast);
}

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

/* ----------------------------------------------------
   9. 联系我们 Section (Contact Form & Info)
   ---------------------------------------------------- */
.contact-section {
    padding: 120px 0;
    background-color: var(--color-dark);
    color: var(--color-bg-white);
    position: relative;
}

.contact-container {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 60px;
    align-items: center;
}

.contact-info-panel h2 {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.3;
    margin-top: 10px;
    margin-bottom: 20px;
}

.contact-info-panel p {
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.detail-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.detail-icon {
    width: 44px;
    height: 44px;
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
}

.detail-icon i {
    width: 20px;
    height: 20px;
}

.detail-item span {
    display: block;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.detail-item strong {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-bg-white);
}

/* 表单面板 */
.contact-form-panel {
    background-color: var(--color-bg-white);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.3);
    color: var(--color-dark);
}

.contact-form-panel h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
}

.form-desc {
    font-size: 14px;
    color: var(--color-text-muted);
    margin-bottom: 30px;
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 20px;
}

.form-group-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-group label {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text-main);
}

.form-group input[type="text"],
.form-group input[type="tel"],
.form-group textarea {
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: var(--color-bg-light);
    color: var(--color-dark);
    font-size: 14px;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    background-color: var(--color-bg-white);
    box-shadow: 0 0 0 3px rgba(10, 54, 157, 0.1);
}

/* 复选框组 */
.checkbox-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--color-text-main);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    border-radius: 4px;
    border: 1px solid var(--color-border);
    cursor: pointer;
}

.btn-submit {
    width: 100%;
    background: var(--gradient-primary);
    color: var(--color-bg-white);
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(10, 54, 157, 0.25);
    margin-top: 10px;
}

.btn-submit:hover {
    background: linear-gradient(135deg, #635bff 0%, #0a369d 100%);
    box-shadow: 0 8px 20px rgba(10, 54, 157, 0.4);
}

/* ----------------------------------------------------
   10. 页脚 Styles (Footer)
   ---------------------------------------------------- */
.site-footer {
    background-color: #030712;
    color: rgba(255, 255, 255, 0.6);
    padding: 80px 0 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.3fr repeat(3, 0.9fr);
    gap: 50px;
    margin-bottom: 60px;
}

.footer-brand {
    max-width: 320px;
}

.white-logo .brand-name {
    color: var(--color-bg-white);
}

.white-logo .brand-sub {
    color: rgba(255, 255, 255, 0.4);
}

.brand-desc {
    font-size: 13px;
    line-height: 1.6;
    margin-top: 16px;
    margin-bottom: 24px;
}

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

.social-icon-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-bg-white);
    transition: var(--transition-fast);
}

.social-icon-btn:hover {
    background-color: var(--color-primary);
    transform: translateY(-2px);
}

.footer-links h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-bg-white);
    margin-bottom: 24px;
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links ul a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
}

.footer-links ul a:hover {
    color: var(--color-accent);
    padding-left: 4px;
}

.footer-links p {
    font-size: 13px;
    margin-bottom: 12px;
    line-height: 1.5;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 30px;
    font-size: 12px;
}

.footer-bottom-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom-links {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-bottom-links a {
    color: rgba(255, 255, 255, 0.4);
}

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

.divider {
    color: rgba(255, 255, 255, 0.15);
}

/* ----------------------------------------------------
   11. 弹窗与Toast提示 (Toast)
   ---------------------------------------------------- */
.toast-notification {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 16px 24px;
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition-smooth);
    pointer-events: none;
}

.toast-notification.show {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

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

.toast-success-icon {
    width: 28px;
    height: 28px;
    color: var(--color-accent);
    flex-shrink: 0;
}

.toast-content h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 2px;
}

.toast-content p {
    font-size: 13px;
    color: var(--color-text-muted);
}

/* ----------------------------------------------------
   12. 滚动加载动画 (Scroll Animate Utilities)
   ---------------------------------------------------- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-on-scroll.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ----------------------------------------------------
   13. 动画关键帧 (Keyframes)
   ---------------------------------------------------- */
@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
    100% { transform: translateY(0px); }
}

@keyframes floatCard {
    0% { transform: translateY(0px); }
    100% { transform: translateY(-8px); }
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(0, 212, 178, 0.5); }
    70% { box-shadow: 0 0 0 10px rgba(0, 212, 178, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 212, 178, 0); }
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(calc(-50% - 25px)); }
}

@keyframes slideUpFade {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ----------------------------------------------------
   14. 响应式布局媒体查询 (Responsive Queries)
   ---------------------------------------------------- */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 60px;
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
        width: 100%;
    }
    
    .hero-visual {
        max-width: 480px;
        margin: 0 auto;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .saas-pane-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .saas-preview {
        order: -1;
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-container {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    /* 导航栏折叠菜单效果 */
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background-color: var(--color-bg-white);
        flex-direction: column;
        align-items: center;
        padding-top: 50px;
        gap: 24px;
        transition: var(--transition-smooth);
        box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .site-header:not(.scrolled) .nav-menu {
        background-color: var(--color-dark);
    }
    
    .site-header:not(.scrolled) .nav-menu .nav-item {
        color: rgba(255, 255, 255, 0.8);
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .flow-container {
        flex-direction: column;
        gap: 30px;
    }
    
    .flow-line-connector {
        width: 2px;
        height: 40px;
        top: 0;
        margin: -10px 0;
    }
    
    .form-group-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .checkbox-group {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
        align-items: center;
    }
    
    .floating-card.c1 {
        left: -10px;
    }
    
    .floating-card.c2 {
        right: -10px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form-panel {
        padding: 24px;
    }
}