/* 全局基础重置 保留基础属性，样式全部重写 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Noto Sans SC", system-ui, sans-serif;
}
html, body {
    width: 100%;
    min-height: 100vh;
    color: #222;
    background-color: #fefbf5;
    scroll-behavior: smooth;
}
ul { list-style: none; }
a { text-decoration: none; color: inherit; transition: all 0.25s ease; }
input, button { border: none; outline: none; font-size: 14px; }
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 全局按钮 全新橙青撞色，圆角风格全部修改 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.25s ease;
    box-shadow: 0 3px 12px transparent;
    letter-spacing: 0.5px;
}
.btn-primary {
    background: linear-gradient(135deg, #ff7d3b, #ffb067);
    color: #ffffff;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 125, 59, 0.3);
}
.btn-outline {
    border: 2px solid #06b6d4;
    color: #06b6d4;
    background: transparent;
    border-radius: 8px;
}
.btn-outline:hover {
    background: linear-gradient(135deg, #06b6d422, #22d3ee22);
    transform: translateY(-2px);
}

/* 导航栏 全新悬浮块状样式，废除旧版磨砂通栏 */
.header {
    background: #ffffff;
    position: sticky;
    top: 0;
    z-index: 999;
    box-shadow: 0 2px 18px rgba(6, 182, 212, 0.08);
}
.nav-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 78px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}
.logo img {
    height: 44px;
    border-radius: 12px;
}
.logo-text {
    font-size: 26px;
    font-weight: 750;
    background: linear-gradient(135deg, #ff7d3b, #06b6d4);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: 1.2px;
}
.nav-menu {
    display: flex;
    gap: 42px;
}
.nav-menu li a {
    font-size: 15.5px;
    color: #555;
    position: relative;
    font-weight: 520;
}
.nav-menu li a.active {
    color: #ff7d3b;
}
.nav-menu li a.active::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 4px;
    border-radius: 4px;
    background: linear-gradient(90deg,#ff7d3b,#06b6d4);
}
.nav-buttons {
    display: flex;
    gap: 16px;
}

/* 移动端汉堡菜单 全新样式 */
.hamburger {
    display: none;
    font-size: 30px;
    cursor: pointer;
    color: #ff7d3b;
}
.mobile-menu {
    display: none;
    position: absolute;
    top: 78px;
    left: 0;
    width: 100%;
    background: #ffffff;
    padding: 28px 24px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.06);
}
.mobile-menu li {
    padding: 16px 0;
    border-bottom: 1px solid #f0f7f9;
    color: #444;
    text-align: left;
}
.mobile-menu.active {
    display: block;
}

/* 全新Banner布局：左图右文字【纯CSS渐变+流动线条，无任何图片】 */
.banner {
    width: 100%;
    min-height: 580px;
    /* 纯CSS多层渐变基底 替代图片背景 */
    background: linear-gradient(120deg, #fff5ee 0%, #f0feff 100%);
    /* CSS 动态流线、径向渐变光斑拼接科技背景 */
    background-image: 
        radial-gradient(circle at 15% 20%, rgba(255, 125, 59, 0.15) 0%, transparent 35%),
        radial-gradient(circle at 85% 70%, rgba(6, 182, 212, 0.15) 0%, transparent 40%),
        linear-gradient(110deg, transparent 30%, rgba(255, 176, 103, 0.08) 60%, transparent 80%),
        linear-gradient(-30deg, transparent 20%, rgba(34, 211, 238, 0.08) 50%, transparent 75%);
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 40px 0;
    position: relative;
}
/* CSS 生成横向流动装饰线条 模拟飞梭流光效果 */
.banner::before, .banner::after {
    content: "";
    position: absolute;
    width: 60%;
    height: 1px;
    left: 20%;
    background: linear-gradient(90deg, transparent, #ff7d3b, #06b6d4, transparent);
    animation: bannerFlow 8s linear infinite;
}
.banner::before {
    top: 30%;
    animation-delay: 0s;
}
.banner::after {
    bottom: 35%;
    width: 50%;
    left: 25%;
    animation-delay: 2.5s;
}
/* 浮动光点粒子动画 CSS原生实现 无图片 */
.banner .particle-dot {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, #ff7d3b, #06b6d4);
    opacity: 0.6;
    animation: particleFloat 12s ease-in-out infinite;
}
/* 流光流动动画 */
@keyframes bannerFlow {
    0% { transform: translateX(-80px); opacity: 0.2; }
    50% { opacity: 0.8; }
    100% { transform: translateX(80px); opacity: 0.2; }
}
/* 粒子漂浮动画 */
@keyframes particleFloat {
    0%, 100% { transform: translateY(0) scale(1); opacity: 0.4; }
    50% { transform: translateY(-30px) scale(1.2); opacity: 0.7; }
}
.banner-content {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 60px;
    position: relative;
    z-index: 2;
}
.banner-text h1 {
    font-size: 50px;
    line-height: 1.25;
    margin-bottom: 22px;
    color: #1f2937;
}
.banner-text h1 span {
    background: linear-gradient(135deg, #ff7d3b, #06b6d4);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.banner-text p {
    font-size: 18px;
    color: #606a78;
    line-height: 1.9;
    margin-bottom: 40px;
}
.banner-buttons {
    display: flex;
    gap: 20px;
}
.banner-img-box{
    width: 100%;
    height: 420px;
    background: linear-gradient(135deg,#ff7d3b22,#06b6d422);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 40px rgba(6,182,212,0.12);
    position: relative;
    overflow: hidden;
}
/* 图片容器内部CSS线条装饰 */
.banner-img-box::after {
    content: "";
    position: absolute;
    inset: 0;
    background: conic-gradient(from 45deg, transparent, rgba(255,125,59,0.1), transparent, rgba(6,182,212,0.1), transparent);
    animation: conicRotate 10s linear infinite;
}
@keyframes conicRotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 平台优势：三列圆角悬浮卡片，废除旧版四列异形角 */
.section {
    padding: 100px 0;
}
.section-title {
    text-align: center;
    margin-bottom: 70px;
}
.section-title h2 {
    font-size: 32px;
    color: #222;
    margin-bottom: 14px;
}
.section-title p {
    color: #777;
    font-size: 17px;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}
.advantage-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.advantage-item {
    background: #fff;
    padding: 42px 30px;
    border-radius: 16px;
    box-shadow: 0 6px 24px rgba(0,0,0,0.04);
    transition: all 0.3s ease;
    border: 1px solid #f5f5f5;
}
.advantage-item:hover {
    transform: translateY(-12px);
    box-shadow: 0 16px 40px rgba(255, 125, 59, 0.15);
    border-color: #ffb06744;
}
.advantage-item h3 {
    margin: 18px 0 14px;
    font-size: 20px;
    color: #222;
}
.advantage-item p {
    color: #666;
    font-size: 15px;
    line-height: 1.85;
}

/* 数据区块：白色底+彩色文字，废除旧版渐变深色大背景 */
.data-wrap {
    background: #ffffff;
    padding: 70px 0;
    border-top: 1px solid #f0f0f0;
    border-bottom: 1px solid #f0f0f0;
}
.data-list {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    text-align: center;
}
.data-item h4 {
    font-size: 48px;
    font-weight: 750;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #ff7d3b, #06b6d4);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.data-item p {
    font-size: 17px;
    color: #555;
    font-weight: 500;
}

/* 登录页 全新左右分栏布局【彻底换掉旧居中卡片】左彩色背景+右登录表单 */
.login-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 100vh;
}
.login-left-bg{
    background: linear-gradient(150deg, #ff7d3b, #06b6d4);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    padding: 50px;
    text-align: center;
}
.login-left-bg h2{
    font-size: 36px;
    margin-bottom: 20px;
}
.login-left-bg p{
    font-size: 17px;
    line-height: 2;
    opacity: 0.95;
}
.login-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background: #fefbf5;
}
.login-box .logo {
    margin-bottom: 36px;
}
.login-title {
    font-size: 25px;
    font-weight: 650;
    color: #222;
    margin-bottom: 36px;
}
.form-item {
    margin-bottom: 24px;
    width: 100%;
    max-width: 420px;
}
.form-item label {
    display: block;
    margin-bottom: 10px;
    font-size: 15px;
    color: #444;
    font-weight: 520;
}
.form-item input {
    width: 100%;
    height: 52px;
    background: #ffffff;
    border: 1px solid #e8e8e8;
    border-radius: 8px;
    padding: 0 20px;
    color: #222;
    transition: 0.25s ease;
    font-size: 15px;
}
.form-item input:focus {
    border-color: #ff7d3b;
    box-shadow: 0 0 0 4px rgba(255, 125, 59, 0.12);
    background: #fff;
}
.login-submit {
    width: 420px;
    height: 54px;
    border-radius: 8px;
    font-size: 17px;
    font-weight: 650;
    margin-top: 15px;
}
.login-tip {
    margin-top: 30px;
    font-size: 15px;
    color: #666;
}
.login-tip a {
    color: #ff7d3b;
    font-weight: 600;
}

/* 页脚：三列布局，废除旧版四列深色页脚，浅色简约风格 */
.footer {
    background: #27272a;
    color: #c9cdd4;
    padding: 80px 0 35px;
}
.footer-top {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 40px;
    margin-bottom: 55px;
}
.footer-col h4 {
    color: #ffffff;
    margin-bottom: 26px;
    font-size: 18px;
    padding-bottom: 10px;
    border-bottom: 2px solid #06b6d4;
    display: inline-block;
}
.footer-col li {
    margin-bottom: 14px;
    font-size: 14.5px;
    color: #b8bcc8;
}
.footer-bottom {
    text-align: center;
    padding-top: 28px;
    border-top: 1px solid #3f3f46;
    font-size: 13.5px;
}

/* 全新响应式适配，断点样式全部重写 */
@media screen and (max-width:1024px) {
    .nav-menu, .nav-buttons { display: none; }
    .hamburger { display: block; }
    .banner-content { grid-template-columns: 1fr; text-align: center; }
    .advantage-list { grid-template-columns: repeat(2,1fr); }
    .data-list { grid-template-columns: repeat(2,1fr); gap:40px; }
    .footer-top { grid-template-columns: repeat(2,1fr); }
    .login-wrap{grid-template-columns: 1fr;}
    .login-left-bg{display: none;}
    /* 移动端关闭banner动画提升性能 */
    .banner::before,.banner::after{display:none;}
}
@media screen and (max-width:768px) {
    .nav-wrap { height: 70px; }
    .logo img { height:38px; }
    .logo-text { font-size: 22px; }
    .banner { min-height: auto; padding: 80px 0; }
    .banner-text h1 { font-size: 36px; }
    .banner-buttons { flex-direction: column; gap:15px; align-items: center; }
    .section { padding: 70px 0; }
    .section-title h2 { font-size: 26px; }
    .advantage-list { grid-template-columns: 1fr; }
    .data-list { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr; }
    .login-submit,.form-item{max-width: 100%;}
}