/*
Theme Name: DoubleJ Tech
Theme URI: https://doublej.top
Author: DoubleJ Electronics
Author URI: https://doublej.top
Description: 深色科技风外贸主题，版块式布局：大图轮播、产品展示、能力平台、关于我们、新闻资讯。首页各版块文字与图片均可在外观→自定义中修改。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 7.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: doublej-tech
Tags: one-column, custom-menu, custom-logo, featured-images, translation-ready
*/

/* =========================================================
   DoubleJ Tech — 深色科技风外贸主题
   配色：深蓝 #0a1628 / 主蓝 #1a6fd4 / 浅蓝 #4aa3ff / 白 #ffffff
   ========================================================= */

:root {
    --dj-bg: #0a1628;
    --dj-bg-2: #0e1d35;
    --dj-bg-3: #122238;
    --dj-blue: #1a6fd4;
    --dj-blue-2: #4aa3ff;
    --dj-text: #e8eef7;
    --dj-muted: #9db1c8;
    --dj-line: rgba(255,255,255,0.10);
    --dj-radius: 10px;
    --dj-shadow: 0 10px 30px rgba(0,0,0,0.35);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    background-color: var(--dj-bg);
    color: var(--dj-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a { color: var(--dj-blue-2); text-decoration: none; }
a:hover { color: #ffffff; }
img { max-width: 100%; height: auto; }

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------------- 顶部固定导航 (MetInfo 风格) ---------------- */
.dj-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
/* 滚动后（或非首页时）变深色半透明底 */
.dj-header.scrolled,
body:not(.home) .dj-header {
    background: rgba(10,22,40,0.96);
    border-bottom-color: var(--dj-line);
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}
.dj-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}
.dj-brand {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}
.dj-brand-link {
    display: flex;
    align-items: center;
    gap: 10px;
}
.dj-brand img,
.dj-brand .custom-logo,
.dj-brand .dj-brand-logo {
    height: 40px;
    width: auto;
    max-width: 160px;
    display: block;
    object-fit: contain;
}
/* 无自定义 logo 时的字母标记 */
.dj-brand-mark {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--dj-blue) 0%, var(--dj-blue-2) 100%);
    color: #ffffff;
    font-size: 22px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.dj-brand-name {
    font-size: 24px;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: 1px;
    white-space: nowrap;
    line-height: 1.2;
}
.dj-brand-tag {
    font-size: 11px;
    color: var(--dj-blue-2);
    letter-spacing: 2px;
    text-transform: uppercase;
}
.dj-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}
.dj-nav li {
    margin-right: 8px;
    position: relative;
}
/* MetInfo 风格：每个菜单项前的小圆点 */
.dj-nav li a::before {
    content: "";
    display: inline-block;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--dj-blue-2);
    margin-right: 10px;
    vertical-align: 2px;
    opacity: 0.55;
    transition: opacity 0.2s, transform 0.2s;
}
.dj-nav a {
    display: block;
    padding: 12px 2px;
    color: #ffffff;
    font-size: 16px;
    font-weight: 500;
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    transition: color 0.2s, border-color 0.2s;
}
.dj-nav a:hover,
.dj-nav .current-menu-item > a,
.dj-nav .current_page_item > a {
    color: var(--dj-blue-2);
    border-bottom-color: var(--dj-blue);
}
.dj-nav a:hover::before,
.dj-nav .current-menu-item > a::before {
    opacity: 1;
    transform: scale(1.2);
}
/* --- 悬停展开的下拉子菜单（MetInfo 风格） --- */
.dj-nav li.menu-item-has-children > a::after {
    content: "▾";
    font-size: 10px;
    margin-left: 6px;
    color: var(--dj-muted);
    transition: transform 0.2s;
}
/* 全宽深色面板：fixed 定到屏幕顶部导航下方，整屏宽 */
.dj-nav .sub-menu {
    display: flex;
    justify-content: center;
    gap: 16px;
    align-items: center;
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    width: 100vw;
    background: rgba(14,29,53,0.98);
    border-bottom: 1px solid var(--dj-line);
    box-shadow: 0 16px 40px rgba(0,0,0,0.5);
    padding: 18px 0 26px;
    margin: 0;
    list-style: none;
    z-index: 120;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
}
.dj-nav .sub-menu .menu-item {
    list-style: none;
}
.dj-nav li:hover > .sub-menu,
.dj-nav li:focus-within > .sub-menu,
.dj-nav .sub-menu:hover {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.dj-nav .sub-menu a {
    display: inline-block;
    padding: 13px 30px;
    color: var(--dj-text);
    font-size: 16px;
    font-weight: 500;
    white-space: nowrap;
    border-bottom: none;
    border-bottom-width: 0;
    border-radius: 999px;
    border: 1px solid var(--dj-line);
    background: rgba(255,255,255,0.03);
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.dj-nav .sub-menu a::before { display: none; }
.dj-nav .sub-menu a:hover {
    color: #ffffff;
    background: var(--dj-blue);
    border-color: var(--dj-blue);
}
.dj-nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--dj-line);
    color: #ffffff;
    font-size: 22px;
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    line-height: 1;
}
@media (max-width: 1024px) {
    .dj-nav-toggle { display: block; }
    .dj-nav {
        position: fixed;
        top: 76px; left: 0; right: 0;
        background: var(--dj-bg-2);
        border-bottom: 1px solid var(--dj-line);
        display: none;
        padding: 12px;
        max-height: calc(100vh - 76px);
        overflow-y: auto;
    }
    .dj-nav.open { display: block; }
    .dj-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
    .dj-nav li { margin-right: 0; }
    .dj-nav a { padding: 14px 12px; border-bottom: 1px solid var(--dj-line); border-bottom-width: 1px; }
    .dj-nav a::before { display: none; }
    /* 移动端：子菜单默认隐藏，点击父项展开 */
    .dj-nav li.menu-item-has-children > a::after { display: none; }
    .dj-nav .sub-menu {
        position: static;
        background: transparent;
        box-shadow: none;
        border-radius: 0;
        padding: 0 0 0 18px;
        margin: 0;
        transform: none;
        opacity: 0;
        visibility: hidden;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, opacity 0.3s ease;
    }
    .dj-nav li.open > .sub-menu {
        opacity: 1;
        visibility: visible;
        max-height: 480px;
    }
    .dj-nav .sub-menu a {
        color: var(--dj-muted);
        padding: 12px;
        font-size: 14px;
        border-bottom: 1px solid var(--dj-line);
    }
    .dj-nav .sub-menu a:hover { color: var(--dj-blue-2); background: none; }
}

/* ---------------- 大图轮播 Banner ---------------- */
.dj-hero {
    position: relative;
    margin-top: 0;
    height: 760px;
    min-height: 620px;
    overflow: hidden;
    background: var(--dj-bg-2);
}
.dj-hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.8s ease;
    pointer-events: none;
}
.dj-hero-slide.active { opacity: 1; pointer-events: auto; }
.dj-hero-slide .dj-hero-img {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}
.dj-hero-slide .dj-hero-img::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(10,22,40,0.55) 0%, rgba(10,22,40,0.15) 40%, rgba(10,22,40,0.75) 100%);
}
.dj-hero-caption {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-bottom: 70px;
}
.dj-hero-caption .dj-hero-en {
    font-size: 16px;
    letter-spacing: 6px;
    text-transform: uppercase;
    color: var(--dj-blue-2);
    margin-bottom: 20px;
    font-weight: 700;
}
.dj-hero-caption h1 {
    font-size: 68px;
    line-height: 1.15;
    margin: 0 0 24px;
    color: #ffffff;
    font-weight: 800;
    overflow-wrap: break-word;
    word-break: normal;
    max-width: 100%;
}
.dj-hero-caption p {
    font-size: 21px;
    color: var(--dj-text);
    max-width: 640px;
    margin: 0 0 36px;
}
.dj-hero-caption .dj-btn {
    display: inline-block;
    padding: 13px 34px;
    background: var(--dj-blue);
    color: #ffffff;
    font-size: 16px;
    font-weight: 600;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 6px 20px rgba(26,111,212,0.4);
}
.dj-hero-caption .dj-btn:hover {
    background: var(--dj-blue-2);
    color: #ffffff;
    transform: translateY(-2px);
}
.dj-hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 54px; height: 54px;
    background: rgba(255,255,255,0.08);
    border: 1px solid var(--dj-line);
    color: #ffffff;
    font-size: 22px;
    line-height: 1;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}
.dj-hero-arrow:hover { background: var(--dj-blue); }
.dj-hero-arrow.prev { left: 24px; }
.dj-hero-arrow.next { right: 24px; }
.dj-hero-dots {
    position: absolute;
    bottom: 24px;
    left: 0; right: 0;
    z-index: 5;
    display: flex;
    justify-content: center;
    gap: 10px;
}
.dj-hero-dots button {
    width: 10px; height: 10px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.35);
    cursor: pointer;
    padding: 0;
    transition: background 0.2s, transform 0.2s;
}
.dj-hero-dots button.active {
    background: var(--dj-blue-2);
    transform: scale(1.3);
}
@media (max-width: 900px) {
    .dj-hero { height: 460px; margin-top: 60px; }
    .dj-hero-caption h1 { font-size: 36px; }
    .dj-hero-caption p { font-size: 16px; }
    .dj-hero-caption { padding-bottom: 46px; }
    .dj-hero-caption .dj-hero-en { font-size: 13px; letter-spacing: 4px; margin-bottom: 14px; }
    .dj-hero-arrow { width: 38px; height: 38px; font-size: 18px; }
}

/* ---------------- 版块通用 ---------------- */
.dj-section { padding: 96px 0; }
.dj-section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
}
.dj-section-head .dj-en {
    font-size: 13px;
    letter-spacing: 5px;
    text-transform: uppercase;
    color: var(--dj-blue-2);
    margin-bottom: 10px;
    font-weight: 700;
}
.dj-section-head h2 {
    font-size: 38px;
    margin: 0 0 16px;
    color: #ffffff;
    font-weight: 800;
    letter-spacing: 1px;
}
.dj-section-head p {
    font-size: 16px;
    color: var(--dj-muted);
    margin: 0;
    line-height: 1.8;
}
.dj-section-alt { background: var(--dj-bg-2); }

/* ---------------- 产品展示区 ---------------- */
.dj-products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}
.dj-product-card {
    background: var(--dj-bg-3);
    border: 1px solid var(--dj-line);
    border-radius: var(--dj-radius);
    overflow: hidden;
    transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}
.dj-product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--dj-shadow);
    border-color: rgba(26,111,212,0.5);
}
.dj-product-card .dj-pimg {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--dj-bg);
}
.dj-product-card .dj-pimg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s;
}
.dj-product-card:hover .dj-pimg img { transform: scale(1.06); }
.dj-product-card .dj-pbody {
    padding: 22px 18px;
    text-align: center;
}
.dj-product-card .dj-pbody h3 {
    margin: 0 0 8px;
    font-size: 18px;
    color: #ffffff;
    font-weight: 700;
    letter-spacing: 1px;
}
.dj-product-card .dj-pbody p {
    margin: 0;
    font-size: 14px;
    color: var(--dj-muted);
    line-height: 1.7;
}
@media (max-width: 900px) {
    .dj-products-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
    .dj-products-grid { grid-template-columns: 1fr; }
}

/* ---------------- 能力/优势区 ---------------- */
.dj-features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.dj-feature {
    text-align: center;
    padding: 40px 22px;
    background: var(--dj-bg-3);
    border: 1px solid var(--dj-line);
    border-radius: var(--dj-radius);
    transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}
.dj-feature:hover { transform: translateY(-4px); box-shadow: var(--dj-shadow); border-color: rgba(26,111,212,0.4); }
.dj-feature .dj-ficon {
    width: 72px; height: 72px;
    margin: 0 auto 20px;
    background: rgba(26,111,212,0.15);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    color: var(--dj-blue-2);
}
.dj-feature h3 { margin: 0 0 10px; font-size: 18px; color: #ffffff; letter-spacing: 1px; }
.dj-feature p { margin: 0; font-size: 14px; color: var(--dj-muted); line-height: 1.7; }
@media (max-width: 900px) {
    .dj-features-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
    .dj-features-grid { grid-template-columns: 1fr; }
}

/* ---------------- 关于我们 ---------------- */
.dj-about {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}
.dj-about-img {
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid var(--dj-line);
    box-shadow: var(--dj-shadow);
}
.dj-about-img img { display: block; width: 100%; object-fit: cover; aspect-ratio: 4/3; }
.dj-about .dj-en { font-size: 13px; letter-spacing: 5px; text-transform: uppercase; color: var(--dj-blue-2); margin-bottom: 12px; font-weight: 700; }
.dj-about h2 { font-size: 34px; margin: 0 0 20px; color: #ffffff; font-weight: 800; letter-spacing: 1px; }
.dj-about p { font-size: 16px; color: var(--dj-muted); margin: 0 0 16px; line-height: 1.9; }
.dj-about-stats {
    display: flex;
    gap: 48px;
    margin-top: 32px;
}
.dj-about-stats .dj-stat b { font-size: 32px; color: var(--dj-blue-2); font-weight: 800; display: block; letter-spacing: 1px; }
.dj-about-stats .dj-stat span { font-size: 13px; color: var(--dj-muted); }
@media (max-width: 900px) {
    .dj-about { grid-template-columns: 1fr; gap: 30px; }
}

/* ---------------- 新闻资讯 ---------------- */
.dj-news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.dj-news-card {
    background: var(--dj-bg-3);
    border: 1px solid var(--dj-line);
    border-radius: var(--dj-radius);
    padding: 24px;
    transition: transform 0.25s, box-shadow 0.25s;
}
.dj-news-card:hover { transform: translateY(-4px); box-shadow: var(--dj-shadow); }
.dj-news-card .dj-news-date { font-size: 12px; color: var(--dj-blue-2); letter-spacing: 1px; margin-bottom: 10px; }
.dj-news-card h3 { margin: 0 0 10px; font-size: 17px; color: #ffffff; line-height: 1.4; }
.dj-news-card p { margin: 0; font-size: 14px; color: var(--dj-muted); line-height: 1.6; }
.dj-news-card h3 a { color: inherit; }
.dj-news-card h3 a:hover { color: var(--dj-blue-2); }
@media (max-width: 900px) {
    .dj-news-grid { grid-template-columns: 1fr; }
}

/* ---------------- CTA 区块 ---------------- */
.dj-cta {
    background: linear-gradient(135deg, var(--dj-blue) 0%, #0e4a9e 100%);
    text-align: center;
    padding: 68px 24px;
    border-radius: var(--dj-radius);
}
.dj-cta h2 { margin: 0 0 12px; font-size: 30px; color: #ffffff; font-weight: 800; letter-spacing: 1px; }
.dj-cta p { margin: 0 0 26px; font-size: 16px; color: rgba(255,255,255,0.9); line-height: 1.8; }
.dj-cta .dj-btn { background: #ffffff; color: var(--dj-blue); box-shadow: 0 6px 20px rgba(0,0,0,0.2); }
.dj-cta .dj-btn:hover { background: #eaf3ff; color: var(--dj-blue); }

/* ---------------- 页脚 ---------------- */
.dj-footer {
    background: var(--dj-bg-2);
    border-top: 1px solid var(--dj-line);
    padding: 64px 0 0;
    margin-top: 96px;
}
.dj-footer-cols {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.4fr;
    gap: 48px;
    padding-bottom: 44px;
}
.dj-footer h4 { font-size: 17px; color: #ffffff; margin: 0 0 20px; font-weight: 700; letter-spacing: 1px; }
.dj-footer p, .dj-footer li { font-size: 14px; color: var(--dj-muted); }
.dj-footer ul { list-style: none; margin: 0; padding: 0; }
.dj-footer li { margin-bottom: 12px; line-height: 1.7; }
.dj-footer a { color: var(--dj-muted); }
.dj-footer a:hover { color: var(--dj-blue-2); }
.dj-footer .dj-foot-brand { font-size: 22px; font-weight: 800; color: #ffffff; margin-bottom: 10px; letter-spacing: 1px; }
.dj-footer .dj-foot-en { font-size: 11px; letter-spacing: 3px; text-transform: uppercase; color: var(--dj-blue-2); }
.dj-footer .dj-foot-contact li { padding-left: 0; }
.dj-footer-bottom {
    border-top: 1px solid var(--dj-line);
    text-align: center;
    padding: 18px 24px;
    font-size: 13px;
    color: var(--dj-muted);
}
@media (max-width: 900px) {
    .dj-footer-cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
    .dj-footer-cols { grid-template-columns: 1fr; }
}

/* ---------------- 普通页面 / 文章页 ---------------- */
.dj-page {
    padding: 140px 0 80px;
    min-height: 60vh;
}
.dj-page h1 {
    font-size: 36px;
    color: #ffffff;
    margin: 0 0 24px;
    font-weight: 800;
}
.dj-page .dj-page-content h2 { color: #ffffff; }
.dj-page .dj-page-content {
    background: var(--dj-bg-3);
    border: 1px solid var(--dj-line);
    border-radius: var(--dj-radius);
    padding: 36px;
    font-size: 16px;
    color: var(--dj-text);
}
.dj-page .dj-page-content p { color: var(--dj-text); }
.dj-page .dj-page-content img { border-radius: 8px; }

/* ---------------- 文章列表 ---------------- */
.dj-posts { padding: 140px 0 80px; }
.dj-posts h1 { font-size: 34px; color: #ffffff; font-weight: 800; margin-bottom: 32px; }
.dj-post-item {
    display: block;
    background: var(--dj-bg-3);
    border: 1px solid var(--dj-line);
    border-radius: var(--dj-radius);
    padding: 24px;
    margin-bottom: 20px;
    transition: border-color 0.2s, transform 0.2s;
}
.dj-post-item:hover { border-color: rgba(26,111,212,0.5); transform: translateX(4px); }
.dj-post-item h2 { margin: 0 0 8px; font-size: 20px; }
.dj-post-item h2 a { color: #ffffff; }
.dj-post-item h2 a:hover { color: var(--dj-blue-2); }
.dj-post-item .dj-post-date { font-size: 13px; color: var(--dj-muted); }

/* 文章内容通用 */
.wp-block-heading { color: #ffffff; }