/* 全局基础重置 */
* {
    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: #333;
    background-color: #f8faff;
}
ul { list-style: none; }
a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
input, button { border: none; outline: none; font-size: 14px; }
.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 18px;
}

/* 全局按钮 彩色渐变 无SaaS方正样式 */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 550;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px transparent;
}
.btn-primary {
    background: linear-gradient(135deg, #409eff, #a855f7);
    color: #ffffff;
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(168, 85, 247, 0.35);
}
.btn-outline {
    border: 2px solid #409eff;
    color: #409eff;
    background: transparent;
    border-radius: 50px;
}
.btn-outline:hover {
    background: linear-gradient(135deg, #409eff22, #a855f722);
    transform: translateY(-2px);
}

/* 导航栏 磨砂轻渐变 非SaaS窄边框 */
.header {
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 999;
    border-bottom: 1px solid rgba(64, 158, 255, 0.15);
}
.nav-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}
.logo img {
    height: 42px;
    border-radius: 8px;
}
.logo-text {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, #409eff, #a855f7, #f472b6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: 1px;
}
.nav-menu {
    display: flex;
    gap: 36px;
}
.nav-menu li a {
    font-size: 15px;
    color: #4b5563;
    position: relative;
    font-weight: 500;
}
.nav-menu li a.active {
    color: #a855f7;
}
.nav-menu li a.active::after {
    content: "";
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 28px;
    height: 3px;
    border-radius: 3px;
    background: linear-gradient(90deg,#409eff,#a855f7);
}
.nav-buttons {
    display: flex;
    gap: 14px;
}

/* 移动端汉堡菜单 */
.hamburger {
    display: none;
    font-size: 28px;
    cursor: pointer;
    color: #a855f7;
}
.mobile-menu {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(8px);
    padding: 24px 20px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}
.mobile-menu li {
    padding: 14px 0;
    border-bottom: 1px solid #f0f4ff;
    color: #4b5563;
    text-align: center;
}
.mobile-menu.active {
    display: block;
}

/* 全新飞梭主题Banner 彩色流动背景 布局左右图文调换 */
.banner {
    width: 100%;
    min-height: 540px;
    background: linear-gradient(150deg, #f0f4ff 0%, #faf0fe 50%, #fef4f8 100%), url("./banner-bg.jpg") center/cover no-repeat;
    display: flex;
    align-items: center;
    overflow: hidden;
}
.banner-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 40px;
}
.banner-text h1 {
    font-size: 46px;
    line-height: 1.3;
    margin-bottom: 18px;
    background: linear-gradient(135deg, #2563eb, #9333ea);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.banner-text p {
    font-size: 17px;
    color: #6b7280;
    line-height: 1.8;
    margin-bottom: 36px;
}
.banner-buttons {
    display: flex;
    gap: 18px;
}

/* 平台优势 不规则圆角卡片 彩色hover */
.section {
    padding: 88px 0;
}
.section-title {
    text-align: center;
    margin-bottom: 64px;
}
.section-title h2 {
    font-size: 30px;
    color: #1f2937;
    margin-bottom: 12px;
}
.section-title span {
    color: #9ca3af;
    font-size: 16px;
}
.advantage-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}
.advantage-item {
    background: #fff;
    padding: 36px 24px;
    border-radius: 20px 8px 24px 10px;
    box-shadow: 0 4px 18px rgba(168, 85, 247, 0.08);
    transition: all 0.3s ease;
    border: 1px solid #f3f4f6;
}
.advantage-item:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 12px 32px rgba(64, 158, 255, 0.15);
    border-color: #a855f755;
}
.advantage-item h3 {
    margin: 16px 0 12px;
    font-size: 18px;
    color: #1f2937;
}
.advantage-item p {
    color: #6b7280;
    font-size: 14px;
    line-height: 1.7;
}

/* 数据区块 多彩渐变分栏 取消单一纯色 */
.data-wrap {
    background: linear-gradient(120deg, #409eff, #a855f7, #f472b6);
    padding: 64px 0;
}
.data-list {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    text-align: center;
    color: #fff;
}
.data-item h4 {
    font-size: 44px;
    font-weight: 700;
    margin-bottom: 8px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.data-item p {
    font-size: 16px;
    opacity: 0.92;
}

/* 登录页 全新异形圆角 彩色卡片 居中布局 完全区别旧版 */
.login-wrap {
    display: flex;
    min-height: 100vh;
    align-items: center;
    justify-content: center;
    background: linear-gradient(140deg, #f0f7ff, #f9f0ff, #fff5f8);
    padding: 20px;
}
.login-box {
    width: 100%;
    max-width: 400px;
    background: #ffffff;
    padding: 42px 36px;
    border-radius: 28px 12px 32px 16px;
    box-shadow: 0 8px 36px rgba(168, 85, 247, 0.18);
    border: none;
}
.login-box .logo {
    justify-content: center;
    margin-bottom: 32px;
}
.login-title {
    text-align: center;
    font-size: 24px;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 32px;
}
.form-item {
    margin-bottom: 22px;
}
.form-item label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: #4b5563;
    font-weight: 500;
}
.form-item input {
    width: 100%;
    height: 48px;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 0 16px;
    color: #1f2937;
    transition: 0.3s ease;
}
.form-item input:focus {
    border-color: #a855f7;
    box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.15);
    background: #fff;
}
.login-submit {
    width: 100%;
    height: 50px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    margin-top: 12px;
}
.login-tip {
    text-align: center;
    margin-top: 26px;
    font-size: 14px;
    color: #6b7280;
}
.login-tip a {
    color: #a855f7;
    font-weight: 550;
}

/* 页脚 浅彩色分割 轻量化 */
.footer {
    background: #1f2937;
    color: #d1d5db;
    padding: 70px 0 30px;
}
.footer-top {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 32px;
    margin-bottom: 48px;
}
.footer-col h4 {
    color: #ffffff;
    margin-bottom: 22px;
    font-size: 17px;
    border-left: 3px solid #a855f7;
    padding-left: 12px;
}
.footer-col li {
    margin-bottom: 12px;
    font-size: 14px;
    color: #9ca3af;
}
.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid #374151;
    font-size: 13px;
}

/* 响应式适配 保留全部移动端兼容性 */
@media screen and (max-width:992px) {
    .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:32px; }
    .footer-top { grid-template-columns: repeat(2,1fr); }
}
@media screen and (max-width:768px) {
    .nav-wrap { height: 66px; }
    .logo img { height:36px; }
    .logo-text { font-size: 20px; }
    .banner { min-height: auto; padding: 70px 0; }
    .banner-text h1 { font-size: 32px; }
    .banner-buttons { flex-direction: column; gap:12px; align-items: center; }
    .section { padding: 60px 0; }
    .section-title h2 { font-size: 24px; }
    .advantage-list { grid-template-columns: 1fr; }
    .data-list { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr; }
}