/* ========== 全局主题变量（修改这里一键换色） ========== */
:root {
    --main-color: #FF5722;
    --main-light: #ff946d;
    --main-dark: #d84315;
    --text-black: #1a1a1a;
    --text-gray: #666;
    --text-light-gray: #999;
    --bg-page: #f8fafc;
    --bg-white: #ffffff;
    --border-line: #eeeeee;
    --shadow-main: rgba(22, 93, 255, 0.08);
    --shadow-hover: rgba(22, 93, 255, 0.15);
    --transition-all: all 0.3s ease;
}

/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: "Microsoft YaHei", sans-serif;
    color: var(--text-gray);
    background-color: var(--bg-page);
    line-height: 1.6;
    /* 页面载入淡入动画 */
    animation: pageFadeIn 0.8s ease forwards;
}
@keyframes pageFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
ul {
    list-style: none;
}
a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-all);
}
img {
    max-width: 100%;
    display: block;
}
.main-container {
    width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}
.section-head {
    text-align: center;
    margin-bottom: 50px;
    /* 滚动渐显动画 */
    animation: fadeUp 0.6s ease;
}
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.section-title {
    font-size: 32px;
    color: var(--main-color);
    margin-bottom: 12px;
    position: relative;
}
.section-title::after {
    content: "";
    width: 60px;
    height: 3px;
    background: var(--main-color);
    display: block;
    margin: 10px auto 0;
    transition: var(--transition-all);
}
.section-sub {
    font-size: 16px;
    color: var(--text-gray);
}
.more-btn-box {
    text-align: center;
    margin-top: 40px;
}
.more-link {
    display: inline-block;
    padding: 10px 30px;
    border: 1px solid var(--main-color);
    color: var(--main-color);
    border-radius: 30px;
    transition: var(--transition-all);
}
.more-link:hover {
    background: var(--main-color);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 6px 15px var(--shadow-main);
}

/* ========== 顶部导航 ========== */
.header-top {
    background: var(--bg-white);
    box-shadow: 0 2px 10px var(--shadow-main);
    position: sticky;
    top: 0;
    z-index: 999;
}
.header-container {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
}
.logo-text {
    font-size: 24px;
    font-weight: bold;
    color: var(--main-color);
    transition: var(--transition-all);
}
.logo-text:hover {
    text-shadow: 0 0 8px rgba(22,93,255,0.3);
}
.nav-ul {
    display: flex;
    gap: 35px;
}
.nav-a {
    font-size: 16px;
    padding: 8px 0;
    position: relative;
    transition: var(--transition-all);
}
/* 导航下划线滑入动画 */
.nav-a::after {
    content: "";
    width: 0;
    height: 2px;
    background: var(--main-color);
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    transition: var(--transition-all);
}
.nav-li.active .nav-a,
.nav-a:hover {
    color: var(--main-color);
}
.nav-li.active .nav-a::after,
.nav-a:hover::after {
    width: 100%;
}

/* ========== Banner首屏/内页通用 ========== */
.banner-wrap, .page-banner {
    background: linear-gradient(135deg, var(--main-color) 0%, var(--main-light) 100%);
    color: #fff;
    /* 渐变缓慢流动动画 */
    background-size: 200% 200%;
    animation: gradientMove 8s linear infinite;
}
@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}
.banner-wrap {
    height: 520px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}
.banner-title {
    font-size: 46px;
	font-weight: bold;
    margin-bottom: 20px;
    animation: fadeUp 0.8s ease;
}
.banner-desc {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.95;
    animation: fadeUp 0.8s ease 0.2s both;
}
.banner-btn-group {
    display: flex;
    gap: 25px;
    justify-content: center;
    animation: fadeUp 0.8s ease 0.4s both;
}
.banner-btn {
    padding: 14px 40px;
    border-radius: 50px;
    font-size: 17px;
    transition: var(--transition-all);
}
.banner-btn.primary {
    background: #fff;
    color: var(--main-color);
    font-weight: 500;
}
.banner-btn.primary:hover {
    background: #f0f7ff;
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}
.banner-btn.outline {
    border: 2px solid #fff;
    color: #fff;
}
.banner-btn.outline:hover {
    background: rgba(255,255,255,0.15);
    transform: translateY(-5px);
}

/* ========== 核心服务板块 ========== */
.service-section {
    padding: 80px 0;
}
.service-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}
.service-card {
    background: var(--bg-white);
    padding: 35px 20px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 4px 15px var(--shadow-main);
    transition: var(--transition-all);
    /* 卡片延迟渐显 */
    animation: fadeUp 0.6s ease;
}
.service-card:nth-child(2) { animation-delay: 0.1s; }
.service-card:nth-child(3) { animation-delay: 0.2s; }
.service-card:nth-child(4) { animation-delay: 0.3s; }
.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 30px var(--shadow-hover);
}
.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    transition: var(--transition-all);
}
.service-card:hover .service-icon {
    transform: scale(1.1);
}
.card-title {
    font-size: 20px;
    color: var(--text-black);
    margin-bottom: 12px;
}
.card-text {
    color: var(--text-gray);
    font-size: 15px;
}

/* ========== 数据统计栏 ========== */
.data-stat-section {
    background: linear-gradient(90deg, var(--main-dark), var(--main-color));
    padding: 60px 0;
    margin: 40px 0;
}
.data-row {
    width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    text-align: center;
    color: #fff;
}
.data-number {
    font-size: 42px;
    font-weight: bold;
    margin-bottom: 10px;
    /* 数字轻微跳动动画 */
    animation: numberPulse 3s infinite ease-in-out;
}
@keyframes numberPulse {
    0%,100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}
.data-label {
    font-size: 16px;
    opacity: 0.9;
}

/* ========== 优势&FAQ通用卡片 ========== */
.advantage-section, .faq-section {
    padding: 80px 0;
}
.advantage-row, .faq-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.adv-card, .faq-card {
    background: var(--bg-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 12px var(--shadow-main);
    transition: var(--transition-all);
    animation: fadeUp 0.6s ease;
}
.adv-card:nth-child(2), .faq-card:nth-child(2) { animation-delay: 0.15s; }
.adv-card:nth-child(3), .faq-card:nth-child(3) { animation-delay: 0.3s; }
.adv-card:hover, .faq-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px var(--shadow-hover);
}
.adv-img, .faq-img {
    height: 200px;
    overflow: hidden;
}
.adv-img img, .faq-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.adv-card:hover img, .faq-card:hover img {
    transform: scale(1.1);
}
.adv-text, .faq-text {
    padding: 22px;
}
.adv-text h4, .faq-text h4 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--main-color);
}
.adv-text p, .faq-text p {
    color: var(--text-gray);
    font-size: 15px;
}

/* ========== 底部转化区块 ========== */
/* ========== 底部转化区 - 增强背景与动画 ========== */
.action-banner-section {
    position: relative;
    overflow: hidden;
    padding: 70px 0;
    margin: 60px 0;
    color: #fff;

    /* 主题色渐变背景 */
    background:
        radial-gradient(circle at 20% 10%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.06) 0%, transparent 45%),
        linear-gradient(135deg, var(--main-dark) 0%, var(--main-color) 50%, var(--main-dark) 100%);

    /* 背景缓慢流动 */
    background-size: 180% 180%;
    animation: actionBgFlow 12s ease-in-out infinite;
}

@keyframes actionBgFlow {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* 背景粒子光点 */
.action-banner-section::before,
.action-banner-section::after {
    content: "";
    position: absolute;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.12), transparent 70%);
    pointer-events: none;
    animation: floatParticle 8s ease-in-out infinite;
}

.action-banner-section::before {
    top: 10%;
    left: 8%;
    animation-delay: 0s;
}

.action-banner-section::after {
    bottom: 12%;
    right: 10%;
    animation-delay: 4s;
}

@keyframes floatParticle {
    0%, 100% {
        transform: translateY(0) scale(1);
        opacity: 0.6;
    }
    50% {
        transform: translateY(-15px) scale(1.08);
        opacity: 1;
    }
}

/* 中间装饰光线 */
.action-inner {
    position: relative;
    z-index: 2;
    width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;

    /* 入场动画 */
    animation: actionFadeUp 0.9s ease;
}

@keyframes actionFadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.action-text-box h2 {
    font-size: 34px;
    margin-bottom: 12px;

    /* 标题轻微发光 */
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.4);
    animation: titleGlow 3s ease-in-out infinite alternate;
}

@keyframes titleGlow {
    from {
        text-shadow: 0 0 8px rgba(255, 255, 255, 0.4);
    }
    to {
        text-shadow: 0 0 12px rgba(255, 255, 255, 0.6), 0 0 20px rgba(255, 255, 255, 0.3);
    }
}

.action-text-box p {
    font-size: 17px;
    opacity: 0.9;
}

.action-button-group {
    display: flex;
    gap: 20px;
}

.action-btn {
    position: relative;
    overflow: hidden;
    padding: 15px 36px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition-all);
}

/* 按钮扫光效果 */
.action-btn::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
    transition: left 0.5s ease;
}

.action-btn:hover::before {
    left: 100%;
}

.reg-btn {
    background: #fff;
    color: var(--main-color);
}

.reg-btn:hover {
    background: #f8fafc;
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15), 0 0 0 4px rgba(255, 255, 255, 0.1);
}

.service-btn {
    border: 2px solid #fff;
    color: #fff;
}

.service-btn:hover {
    background: rgba(255, 255, 255, 0.18);
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15), 0 0 0 4px rgba(255, 255, 255, 0.1);
}
.action-inner {
    width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #fff;
}
.action-text-box .action-title {
    font-size: 34px;
    margin-bottom: 12px;
    font-weight: bold; /* 加粗 */
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.4);
    animation: titleGlow 3s ease-in-out infinite alternate;
}
.action-text-box p {
    font-size: 17px;
    opacity: 0.9;
}
.action-button-group {
    display: flex;
    gap: 20px;
}
.action-btn {
    padding: 15px 36px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition-all);
}
.reg-btn {
    background: #fff;
    color: var(--main-color);
}
.reg-btn:hover {
    background: #f0f7ff;
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}
.service-btn {
    border: 2px solid #fff;
    color: #fff;
}
.service-btn:hover {
    background: rgba(255,255,255,0.15);
    transform: translateY(-5px);
}

/* ========== 页脚 ========== */
.footer-wrap {
    background: #151b28;
    color: #ccc;
    padding: 50px 0 20px;
}
.footer-container {
    width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}
.footer-contact h4 {
    color: #fff;
    font-size: 20px;
    margin-bottom: 20px;
}
.footer-contact p {
    margin-bottom: 10px;
    font-size: 15px;
}
.footer-link {
    margin-top: 30px;
}
.footer-link a {
    margin: 0 10px;
    color: #aaa;
}
.footer-link a:hover {
    color: var(--main-color);
}
.copyright-box {
    width: 1200px;
    margin: 40px auto 0;
    padding-top: 20px;
    border-top: 1px solid #2c3342;
    text-align: center;
    font-size: 14px;
    color: #999;
}

/* ========== 移动端适配 + 低性能设备关闭动画 ========== */
@media screen and (max-width:1200px) {
    .header-container, .main-container, .data-row, .action-inner, .footer-container, .copyright-box {
        width: 100%;
    }
}
@media screen and (max-width:768px) {
    /* 移动端关闭复杂动画提升流畅度 */
    body, .service-card, .adv-card, .faq-card, .section-head {
        animation: none !important;
    }
    .banner-wrap {
        height: auto;
        padding: 80px 20px;
    }
    .banner-title {
        font-size: 30px;
    }
    .header-container {
        flex-direction: column;
        gap:15px;
    }
    .nav-ul {
        flex-wrap: wrap;
        justify-content: center;
        gap:20px;
    }
    .service-row, .data-row, .advantage-row, .faq-row {
        grid-template-columns: 1fr;
    }
    .action-inner {
        flex-direction: column;
        text-align: center;
        gap:30px;
    }
	.action-banner-section::before,
    .action-banner-section::after {
    display: none;
    }
}
/*  prefers-reduced-motion 系统关闭动画时全部停用 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}
/* 四栏横向卡片布局 优势&FAQ共用 */
.four-card-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

/* 全新升级卡片样式 */
.adv-card {
    background: var(--bg-white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 16px var(--shadow-main);
    transition: var(--transition-all);
    animation: fadeUp 0.6s ease;
}
/* 卡片依次延迟渐入动画 */
.four-card-grid .adv-card:nth-child(1) {animation-delay: 0s;}
.four-card-grid .adv-card:nth-child(2) {animation-delay: 0.12s;}
.four-card-grid .adv-card:nth-child(3) {animation-delay: 0.24s;}
.four-card-grid .adv-card:nth-child(4) {animation-delay: 0.36s;}

.adv-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 14px 35px var(--shadow-hover);
}

.card-img-box {
    height: 170px;
    overflow: hidden;
}
.card-img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.adv-card:hover img {
    transform: scale(1.12);
}

.card-text-box {
    padding: 26px 22px;
}
.card-text-box h4 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--main-color);
    font-weight: 600;
}
.card-text-box p {
    color: var(--text-gray);
    font-size: 15px;
    line-height: 1.7;
}

/* 响应式适配 */
@media screen and (max-width:1200px) {
    .four-card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media screen and (max-width:768px) {
    .four-card-grid {
        grid-template-columns: 1fr;
    }
    .adv-card {
        animation: none !important;
    }
}

@media screen and (max-width:480px) {
    .sub-nav-box {
        gap: 8px;
    }
    .sub-nav-box a {
        padding: 5px 10px;
        font-size: 12px;
    }
}