/**
 * 靠谱送官网 - 主样式文件
 * 主色调: #c12626
 */

/* ==================== 基础布局 ==================== */
.container-80 {
    width: 70%;
    max-width: 1400px;
    margin: 0 auto;
}

/* 响应式适配 */
@media (max-width: 1440px) {
    .container-80 {
        width: 75%;
    }
}

@media (max-width: 1280px) {
    .container-80 {
        width: 85%;
    }
}

@media (max-width: 768px) {
    .container-80 {
        width: 95%;
    }
}

/* ==================== 滚动动画 ==================== */
.fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.fade-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* 动画延迟 */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* ==================== 导航样式 ==================== */
.nav-dropdown {
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.nav-item:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #c12626;
    transition: width 0.3s ease;
}

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

/* ==================== 页面切换 ==================== */
.page {
    display: none;
}

.page.active {
    display: block;
}

/* ==================== 弹窗样式 ==================== */
.dialog-overlay {
    display: none;
    backdrop-filter: blur(4px);
}

.dialog-overlay.active {
    display: flex;
}

.dialog-content {
    animation: dialogSlideIn 0.4s ease-out;
}

@keyframes dialogSlideIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* ==================== 客服按钮 ==================== */
.kefu-btn {
    position: fixed;
    bottom: 100px;
    right: 24px;
    z-index: 999;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, #c12626 0%, #e53935 100%);
    box-shadow: 0 4px 16px rgba(193, 38, 38, 0.35);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.kefu-btn:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 24px rgba(193, 38, 38, 0.45);
}

.kefu-btn img {
    width: 22px;
    height: 22px;
    display: block;
    filter: brightness(0) invert(1);
}

.kefu-btn span {
    display: none;
}

/* ==================== 卡片效果 ==================== */
.card-hover {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-hover:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

/* ==================== 纯色背景 ==================== */
.gradient-primary {
    background: #c12626;
}

.gradient-dark {
    background: #1a1a2e;
}

/* ==================== 标题装饰线 ==================== */
.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: #c12626;
    margin: 16px auto 0;
    border-radius: 2px;
}

/* 左对齐标题 */
.section-title-left::after {
    margin: 16px 0 0;
}

/* 白色标题装饰线（用于深色背景） */
.text-white.section-title::after {
    background: linear-gradient(90deg, #fff 0%, rgba(255,255,255,0.5) 100%);
}

/* ==================== 斜切背景 ==================== */
.skew-bg {
    position: relative;
}

.skew-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: inherit;
    transform: skewY(-2deg);
    transform-origin: top left;
    z-index: -1;
}

/* ==================== 波浪分隔 ==================== */
.wave-divider {
    position: relative;
}

.wave-divider::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 60px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 60'%3E%3Cpath fill='%23ffffff' d='M0,30 C360,60 720,0 1080,30 C1260,45 1350,45 1440,30 L1440,60 L0,60 Z'/%3E%3C/svg%3E") no-repeat bottom;
    background-size: cover;
}

/* ==================== 装饰圆点 ==================== */
.dot-pattern {
    background-image: radial-gradient(#c1262615 1px, transparent 1px);
    background-size: 20px 20px;
}

/* ==================== 浮动装饰 ==================== */
.float-decoration {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* ==================== 高亮边框卡片 ==================== */
.highlight-card {
    position: relative;
    overflow: hidden;
}

.highlight-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: #c12626;
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform 0.3s ease;
}

.highlight-card:hover::before {
    transform: scaleY(1);
}

/* ==================== 交错布局 ==================== */
.stagger-layout > *:nth-child(even) {
    transform: translateY(30px);
}

@media (max-width: 768px) {
    .stagger-layout > *:nth-child(even) {
        transform: translateY(0);
    }
}

/* ==================== 按钮样式 ==================== */
.btn-primary {
    background: #c12626;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(193, 38, 38, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(193, 38, 38, 0.4);
    background: #a82020;
}

.btn-secondary {
    background: #ff6b35;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
    background: #e55a28;
}

/* ==================== 数字统计 ==================== */
.stat-number {
    color: #c12626;
}





/* ==================== 滚动条美化 ==================== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.35);
}

/* ==================== 图片加载优化 ==================== */
img {
    max-width: 100%;
    height: auto;
}

/* 图片懒加载占位 */
img[loading="lazy"] {
    background: #f0f0f0;
}

/* ==================== 焦点状态优化（无障碍） ==================== */
a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid #c12626;
    outline-offset: 2px;
}

/* ==================== 打印样式 ==================== */
@media print {
    .kefu-btn,
    .dialog-overlay,
    header,
    footer {
        display: none !important;
    }
    
    .page {
        display: block !important;
    }
}