* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root {
    --color-dark-bg: #0f1c30;
    --color-darker: #070e19;
    --color-primary-blue: #1677ff;
    --color-blue-light: #42a5ff;
    --color-white: #ffffff;
    --color-gray-light: #f4f7fa;
    --color-text-dark: #1a202c;
    --color-text-gray: #64748b;
    --border-light: #dde2ec;
    --transition-base: all 0.3s ease;
}
body {
    font-family: 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    color: var(--color-text-dark);
    line-height: 1.65;
    overflow-x: hidden;
    background-color: var(--color-gray-light);
}
ul {
    list-style: none;
}
a {
    text-decoration: none;
    color: inherit;
}
img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition-base);
    border: none;
    cursor: pointer;
}
.btn-block {
    width: 100%;
    justify-content: center;
}
.btn-primary {
    background-color: var(--color-primary-blue);
    color: var(--color-white);
}
.btn-primary:hover {
    background-color: #0f64dd;
}

/* ===== Header 全局头部 ===== */
.site-header {
    position: relative;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 999;
    padding: 16px 0;
    background-color: var(--color-dark-bg);
}
.header-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
}
.logo-icon {
    font-size: 24px;
}
.logo-text strong {
    display: block;
    font-size: 18px;
    letter-spacing: 1px;
}
.logo-text small {
    font-size: 10px;
    opacity: 0.8;
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
}
.nav-list {
    display: flex;
    gap: 26px;
}
.nav-item a {
    color: #ffffff;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
}
.menu-toggle {
    display: none;
    background: transparent;
    border: none;
    color: #fff;
    font-size: 24px;
}

/* ===== 面包屑 ===== */
.breadcrumb-wrap {
    padding-top: 32px;
    margin-bottom: 24px;
}
.breadcrumbs {
    font-size: 13px;
    color: var(--color-text-gray);
}
.breadcrumbs a {
    color: var(--color-primary-blue);
}

/* ===== 文章详情两栏布局 ===== */
.blog-single-page-wrap {
    padding-bottom: 70px;
}
.blog-single-layout-row {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap:36px;
}
.blog-single-main {
    background-color: #fff;
    padding:32px;
    border-radius:4px;
    border:1px solid var(--border-light);
}
.post-category {
    font-size:12px;
    text-transform:uppercase;
    color:var(--color-primary-blue);
    font-weight:600;
    display:inline-block;
    margin-bottom:8px;
}
.blog-single-main h1 {
    font-size:32px;
    line-height:1.3;
    margin-bottom:12px;
}
.post-meta-top {
    display:flex;
    gap:16px;
    font-size:13px;
    color:var(--color-text-gray);
    margin-bottom:20px;
}
.feature-img {
    width:100%;
    height:auto;
    border-radius:4px;
    overflow:hidden;
    margin-bottom:24px;
}
.article-content h2 {
    font-size:22px;
    margin-top:32px;
    margin-bottom:14px;
}
.article-content p {
    font-size:15px;
    color:var(--color-text-dark);
    margin-bottom:16px;
}

/* ===== 4步工作流 ===== */
.workflow-steps {
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:8px;
    margin:32px 0;
}
.step-item {
    text-align:center;
    flex:1;
}
.step-icon {
    font-size:28px;
    color:var(--color-primary-blue);
    margin-bottom:8px;
}
.step-item h4 {
    font-size:14px;
    margin-bottom:6px;
}
.step-item p {
    font-size:12px !important;
    color:var(--color-text-gray);
}
.step-arrow {
    color:var(--color-text-gray);
}

/* ===== Benefits 两列列表 ===== */
.benefits-two-col {
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:16px;
    margin-bottom:24px;
}
.benefit-list li {
    display:flex;
    align-items:center;
    gap:8px;
    font-size:14px;
    margin-bottom:8px;
}
.benefit-list li i {
    color:var(--color-primary-blue);
}

/* ===== Applications 图片画廊 ===== */
.app-gallery {
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:14px;
    margin-bottom:28px;
}
.app-card {
    overflow:hidden;
    border-radius:4px;
}
.app-card img {
    height:120px;
}
.app-card span {
    display:block;
    text-align:center;
    font-size:13px;
    padding:6px 0;
}

/* Tags & Share */
.tag-section {
    margin-top:30px;
    padding-top:20px;
    border-top:1px solid var(--border-light);
}
.tag {
    display:inline-block;
    background-color:var(--color-gray-light);
    padding:4px 10px;
    border-radius:3px;
    font-size:12px;
    margin-right:6px;
    margin-bottom:6px;
}
.share-section {
    display:flex;
    align-items:center;
    gap:10px;
    margin-top:14px;
}
.share-btn {
    width:30px;
    height:30px;
    border-radius:50%;
    background-color:var(--color-gray-light);
    display:flex;
    align-items:center;
    justify-content:center;
}

/* Prev Next Post */
.post-nav-bottom {
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px;
    margin-top:36px;
    padding-top:24px;
    border-top:1px solid var(--border-light);
}
.prev-post, .next-post {
    display:flex;
    gap:8px;
    padding:12px;
    background-color:var(--color-gray-light);
    border-radius:4px;
}
.next-post {
    text-align:right;
    justify-content:flex-end;
}
.post-nav-bottom small {
    font-size:11px;
    color:var(--color-text-gray);
    display:block;
}
.post-nav-bottom span {
    font-size:13px;
}

/* ===== 侧边栏通用样式 ===== */
.blog-single-sidebar {}
.sidebar-widget {
    background:#ffffff;
    border:1px solid var(--border-light);
    border-radius:4px;
    padding:22px;
    margin-bottom:22px;
}
.sidebar-widget h4 {
    font-size:16px;
    margin-bottom:14px;
    padding-bottom:8px;
    border-bottom:1px solid var(--border-light);
}
.search-input-wrap {
    position:relative;
}
.search-input-wrap input {
    width:100%;
    border:1px solid var(--border-light);
    border-radius:3px;
    padding:10px 38px 10px 12px;
    font-size:13px;
}
.search-submit {
    position:absolute;
    right:0;
    top:0;
    height:100%;
    width:36px;
    border:none;
    background:transparent;
    cursor:pointer;
    color:var(--color-text-gray);
}
.cat-list li {
    margin-bottom:9px;
}
.cat-list a {
    display:flex;
    justify-content:space-between;
    font-size:14px;
    color:var(--color-text-gray);
}
.popular-post-list {
    display:flex;
    flex-direction:column;
    gap:14px;
}
.popular-post-item {
    display:grid;
    grid-template-columns:80px 1fr;
    gap:10px;
}
.pop-thumb {
    height:64px;
    border-radius:3px;
    overflow:hidden;
}
.pop-text a {
    font-size:13px;
    line-height:1.4;
}
.pop-date {
    font-size:11px;
    color:var(--color-text-gray);
    margin-top:3px;
}
.widget-cta-custom {
    background-color:var(--color-dark-bg);
    color:#fff;
    background-image:linear-gradient(rgba(15,28,48,0.9),rgba(15,28,48,0.9)), url('https://picsum.photos/id/119/400/300');
    background-size:cover;
}
.widget-cta-custom h4 {
    border-bottom-color:rgba(255,255,255,0.15);
}
.widget-cta-custom p {
    font-size:13px;
    margin-bottom:16px;
}
.widget-newsletter .nl-icon {
    font-size:24px;
    color:var(--color-primary-blue);
    margin-bottom:8px;
}
.widget-newsletter p {
    font-size:13px;
    color:var(--color-text-gray);
    margin-bottom:14px;
}
.widget-newsletter input {
    width:100%;
    border:1px solid var(--border-light);
    border-radius:3px;
    padding:10px 12px;
    font-size:13px;
    margin-bottom:12px;
}

/* ===== Footer ===== */
.site-footer {
    background-color:#070e19;
    color:#bbbbbb;
    padding:54px 0 24px;
    font-size:13px;
}
.footer-top {
    display:grid;
    grid-template-columns: 1.8fr repeat(4, 1fr);
    gap:32px;
    margin-bottom:40px;
}
.footer-logo {
    margin-bottom:14px;
}
.brand-col p {
    margin-bottom:18px;
    line-height:1.65;
}
.social-links {
    display:flex;
    gap:14px;
}
.social-links a {
    width:32px;
    height:32px;
    border-radius:50%;
    border:1px solid rgba(255,255,255,0.2);
    display:flex;
    align-items:center;
    justify-content:center;
}
.footer-col h4 {
    color:#fff;
    font-size:15px;
    margin-bottom:16px;
}
.footer-col ul li {
    margin-bottom:9px;
}
.contact-footer-list li {
    display:flex;
    gap:8px;
}
.footer-bottom {
    display:flex;
    justify-content:space-between;
    padding-top:20px;
    border-top:1px solid rgba(255,255,255,0.08);
}
.footer-links a {
    margin-left:22px;
}

/* ===== 响应式 ===== */
@media(max-width:1024px) {
    .blog-single-layout-row {
        grid-template-columns: 1fr;
    }
    .app-gallery {
        grid-template-columns:repeat(2,1fr);
    }
    .footer-top {
        grid-template-columns: repeat(2,1fr);
    }
}
@media(max-width:768px) {
    .main-nav {
        display:none;
    }
    .menu-toggle {
        display:block;
    }
    .blog-single-main h1 {
        font-size:26px;
    }
    .workflow-steps {
        flex-direction:column;
    }
    .step-arrow {
        transform: rotate(90deg);
    }
    .benefits-two-col {
        grid-template-columns:1fr;
    }
    .app-gallery {
        grid-template-columns:1fr;
    }
    .post-nav-bottom {
        grid-template-columns:1fr;
    }
    .footer-top {
        grid-template-columns:1fr;
    }
    .footer-bottom {
        flex-direction:column;
        gap:10px;
    }
}
@media(max-width:480px) {
    .blog-single-main {
        padding:20px 16px;
    }
    .post-meta-top {
        flex-direction:column;
        gap:4px;
    }
}