/* ============================================================
   hj_packaging — 恒捷包装 官网样式
   工业风配色：深蓝主色 + 工程橙强调 + 灰白底
   ============================================================ */

/* ── 变量 ── */
:root {
    --color-primary: #1A3A5C;
    --color-primary-dark: #0D2137;
    --color-accent: #E87722;
    --color-accent-dark: #C45F10;
    --color-bg: #F5F7FA;
    --color-surface: #FFFFFF;
    --color-text: #333333;
    --color-text-muted: #6C757D;
    --color-border: #E0E6ED;
    --shadow-sm: 0 2px 8px rgba(26, 58, 92, 0.08);
    --shadow-md: 0 4px 20px rgba(26, 58, 92, 0.12);
    --radius: 8px;
}

/* ── 基础 ── */
* { box-sizing: border-box; }
body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
}
a { color: var(--color-primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--color-accent); }
img { max-width: 100%; }
h1,h2,h3,h4,h5,h6 { color: var(--color-primary); font-weight: 700; }

/* ── 通用 section 标题 ── */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}
.section-header h2 {
    font-size: 2rem;
    margin-bottom: .5rem;
    position: relative;
    display: inline-block;
}
.section-header h2::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: var(--color-accent);
    margin: .5rem auto 0;
    border-radius: 2px;
}
.section-header p { color: var(--color-text-muted); font-size: 1.05rem; }

/* ── 按钮 ── */
.btn-cta {
    background: var(--color-accent);
    color: #fff;
    border: 2px solid var(--color-accent);
    padding: .55rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    transition: all .2s;
}
.btn-cta:hover {
    background: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    color: #fff;
}

/* ── 页面通用头部 ── */
.page-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: #fff;
    padding: 3.5rem 0 2.5rem;
}
.page-header h1 { color: #fff; font-size: 2.2rem; margin-bottom: .25rem; }
.page-header .lead { color: rgba(255,255,255,.8); font-size: 1.1rem; }
.breadcrumb { background: none; padding: 0; margin: 0; font-size: .9rem; }
.breadcrumb-item a { color: rgba(255,255,255,.75); }
.breadcrumb-item.active { color: rgba(255,255,255,.55); }
.breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,.4); }

/* ── Header / Nav ── */
.site-header { background: var(--color-primary); }
#mainNav {
    background: rgba(13,33,55,.97) !important;
    backdrop-filter: blur(10px);
    padding: .75rem 0;
}
.navbar-brand {
    color: #fff !important;
    font-size: 1.4rem;
    letter-spacing: .5px;
}
.navbar .nav-link {
    color: rgba(255,255,255,.85) !important;
    font-size: .95rem;
    padding: .4rem 1rem !important;
    transition: color .2s;
}
.navbar .nav-link:hover { color: var(--color-accent) !important; }
.btn-nav-cta {
    background: var(--color-accent) !important;
    color: #fff !important;
    border-radius: var(--radius);
    padding: .4rem 1.2rem !important;
    font-weight: 600;
}
.btn-nav-cta:hover { background: var(--color-accent-dark) !important; }
.navbar-toggler { border-color: rgba(255,255,255,.3) !important; }
.navbar-toggler-icon { filter: invert(1); }

/* ── Hero ── */
.hero-static {
    width: 100%;
    min-height: 100vh;
    background: var(--color-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0;
    overflow: hidden;
}
.hero-static-img {
    height: 100vh;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    display: block;
    border-radius: 0;
}
.carousel-item {
    height: 580px;
    background-position: center;
}
.hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to bottom, rgba(13,33,55,.40) 0%, rgba(13,33,55,.30) 50%, rgba(13,33,55,.55) 100%);
}
.hero-content {
    position: relative;
    z-index: 2;
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100%;
    max-width: 700px;
    padding-bottom: 3rem;
}
.hero-content h1 { font-size: 2.8rem; color: #fff; font-weight: 800; line-height: 1.25; }
.hero-content .lead { font-size: 1.2rem; color: rgba(255,255,255,.9); margin: 1rem 0 1.8rem; }
.carousel-indicators { bottom: 1.5rem; transform: translateY(36px); }
.carousel-indicators button {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,.6);
}
.carousel-indicators button.active { background: var(--color-accent); }
.carousel-control-prev-icon,
.carousel-control-next-icon { filter: invert(1); }

/* ── Features ── */
.features-section { background: var(--color-surface); }
.feature-card {
    background: var(--color-bg);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    text-align: center;
    transition: transform .25s, box-shadow .25s;
    height: 100%;
    min-height: 200px;
    border: 1px solid var(--color-border);
    word-break: break-word;
}
.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}
.feature-icon {
    width: 60px; height: 60px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 1rem;
}
.feature-icon i { font-size: 1.5rem; color: #fff; }
.feature-card h5 { color: var(--color-primary); margin-bottom: .5rem; word-break: break-word; }
.feature-card p { color: var(--color-text-muted); font-size: .9rem; margin: 0; word-break: break-word; }

/* ── Products ── */
.products-section { background: var(--color-bg); }
.product-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform .25s, box-shadow .25s;
    height: 100%;
    word-break: break-word;
}
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.product-img {
    position: relative;
    height: 220px;
    overflow: hidden;
    background: var(--color-bg);
}
.product-img img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform .3s;
}
.product-card:hover .product-img img { transform: scale(1.06); }
.product-overlay {
    position: absolute; inset: 0;
    background: rgba(26,58,92,.55);
    display: flex; align-items: center; justify-content: center;
    opacity: 0;
    transition: opacity .25s;
}
.product-card:hover .product-overlay { opacity: 1; }
.product-info { padding: 1.2rem 1rem; }
.product-info h6 { color: var(--color-primary); font-size: 1rem; margin-bottom: .3rem; }

/* ── Category Filter ── */
.category-filter { display: flex; flex-wrap: wrap; gap: .5rem; }
.filter-btn {
    padding: .4rem 1.2rem;
    border-radius: 50px;
    border: 1.5px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: .9rem;
    transition: all .2s;
}
.filter-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.filter-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* ── News ── */
.news-section { background: var(--color-surface); }
.news-card {
    background: var(--color-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform .25s, box-shadow .25s;
    height: 100%;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.news-img {
    width: 100%; height: 200px;
    object-fit: cover;
}
.news-body { padding: 1.2rem; }
.news-date { font-size: .82rem; color: var(--color-accent); font-weight: 600; }
.news-body h6 { color: var(--color-primary); margin: .4rem 0 .5rem; font-size: 1rem; }
.news-body p { color: var(--color-text-muted); font-size: .88rem; margin-bottom: .5rem; }
.news-body a { font-size: .88rem; color: var(--color-accent); font-weight: 600; }

/* ── Partners ── */
.partners-section { background: var(--color-bg); }
.partner-logo {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.2rem 2rem;
    display: flex; align-items: center; justify-content: center;
    min-width: 120px;
    transition: box-shadow .2s;
}
.partner-logo:hover { box-shadow: var(--shadow-sm); }
.partner-logo img { max-height: 50px; max-width: 120px; object-fit: contain; }
.partner-name { color: var(--color-text-muted); font-weight: 600; font-size: .9rem; }

/* ── About ── */
.about-section { background: var(--color-primary); color: #fff; }
.about-section h2 { color: #fff; }
.about-section p { color: rgba(255,255,255,.8); }

/* ── CTA ── */
.cta-section {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    color: #fff;
    padding: 4rem 0;
}
.cta-section h2 { color: #fff; font-size: 2rem; }
.cta-section p { color: rgba(255,255,255,.9); font-size: 1.1rem; }
.cta-section .btn-cta {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
    font-size: 1.1rem;
    padding: .75rem 2.5rem;
}
.cta-section .btn-cta:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

/* ── Footer ── */
.site-footer {
    background: var(--color-primary-dark);
    color: rgba(255,255,255,.75);
    padding: 4rem 0 0;
}
.site-footer h5, .site-footer h6 { color: #fff; }
.site-footer ul { padding: 0; list-style: none; }
.site-footer ul li a { color: rgba(255,255,255,.65); font-size: .9rem; transition: color .2s; }
.site-footer ul li a:hover { color: var(--color-accent); }

/* ── Contact Form ── */
.contact-info-box { background: var(--color-primary); color: #fff; border-radius: var(--radius); }
.contact-info-box h4 { color: #fff; }
.contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.2rem;
}
.contact-list li i {
    font-size: 1.3rem;
    color: var(--color-accent);
    margin-top: 2px;
    flex-shrink: 0;
}
.contact-list li strong { color: #fff; font-size: .9rem; }
.contact-list li p { font-size: .9rem; color: rgba(255,255,255,.8); margin: 0; }

/* ── Detail ── */
.detail-img-box { background: var(--color-bg); border-radius: var(--radius); overflow: hidden; }
.article-body { font-size: 1.05rem; line-height: 1.9; color: var(--color-text); }

/* ── Pagination ── */
.page-link {
    color: var(--color-primary);
    border-color: var(--color-border);
}
.page-link:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.page-item.active .page-link { background: var(--color-primary); border-color: var(--color-primary); }

/* ── Responsive ── */
@media (max-width: 768px) {
    .hero-content h1 { font-size: 1.7rem; }
    .carousel-item { height: 420px; }
    .hero-content { padding-bottom: 2.5rem; }
    .hero-content .btn-cta { max-width: 240px; width: 100%; }
    .section-header h2 { font-size: 1.45rem; }
    .page-header h1 { font-size: 1.5rem; }
    .page-header { padding: 2.5rem 0 2rem; }
}

/* ── Mobile 触控优化 ── */
@media (max-width: 991px) {
    /* 导航菜单 */
    #navMenu {
        background: rgba(13, 33, 55, .98) !important;
        border-radius: 0 0 12px 12px;
        padding: .75rem 0 1rem !important;
        max-height: 80vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    #navMenu .nav-link {
        padding: .75rem 1.25rem !important;
        font-size: 1.05rem;
        border-bottom: 1px solid rgba(255,255,255,.08);
    }
    #navMenu .nav-item:last-child .nav-link { border-bottom: none; }
    .btn-nav-cta {
        display: block !important;
        text-align: center !important;
        margin: .75rem 1rem 0 !important;
        padding: .6rem 1rem !important;
        width: calc(100% - 2rem);
    }
    /* 汉堡按钮加大触控区 */
    .navbar-toggler {
        padding: .5rem .6rem;
        min-width: 44px;
        min-height: 44px;
        border: none !important;
        outline: none !important;
    }
    .navbar-toggler:focus { box-shadow: none; }
    /* 下拉展开动画 */
    #navMenu {
        transform-origin: top;
        transition: transform .25s ease, opacity .25s ease;
    }
}

/* ── Mobile 字体大小优化 ── */
@media (max-width: 576px) {
    body { font-size: 15px; }
    .hero-content h1 { font-size: 1.45rem; }
    .hero-content .lead { font-size: .95rem; }
    .section-header h2 { font-size: 1.3rem; }
    .section-header p { font-size: .9rem; }
    .page-header h1 { font-size: 1.35rem; }
    .btn-cta { font-size: .95rem; padding: .55rem 1.3rem; }
    /* 产品/案例/新闻卡片 */
    .product-info, .news-body { padding: 1rem .8rem; }
    /* Footer 移动端单列 */
    .site-footer { padding: 2.5rem 0 0; }
    .site-footer h5, .site-footer h6 { font-size: 1rem; }
    .site-footer ul li a { font-size: .88rem; }
    /* 表单 */
    .contact-info-box { padding: 1.25rem !important; }
    /* 卡片圆角调小 */
    .feature-card, .product-card, .news-card { border-radius: 6px; }
}

/* ── PWA / Safe Area 适配（刘海屏 / 圆角屏）── */
body {
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
    -webkit-tap-highlight-color: transparent;
}
/* iOS 弹性滚动 */
#navMenu, .carousel-inner, .modal-body {
    -webkit-overflow-scrolling: touch;
}
/* 禁用长按弹出菜单 */
img, a, button { -webkit-touch-callout: none; user-select: none; }
a, button { user-select: auto; }

/* ── 触控按钮最小尺寸 ── */
a.btn, button.btn, .filter-btn {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.navbar .nav-link { min-height: 44px; }

/* ── 图片加载占位动画 ── */
@keyframes shimmer {
    0% { background-position: -400px 0; }
    100% { background-position: 400px 0; }
}
.product-img img, .news-img img, .carousel-item {
    background-color: #e8ecf0;
    transition: opacity .3s ease;
}

/* ── 懒加载渐进显示 ── */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity .4s ease;
}
img[loading="lazy"].loaded { opacity: 1; }

/* ── 移动端产品网格优化 ── */
@media (max-width: 576px) {
    .products-section .row.g-4 { --bs-gutter-y: .75rem; }
    .product-img { height: 180px; }
    .news-img { height: 160px; }
}

/* ── 首页 CTA 移动端优化 ── */
@media (max-width: 576px) {
    .cta-section { padding: 2.5rem 0; }
    .cta-section h2 { font-size: 1.4rem; }
    .cta-section p { font-size: .95rem; }
    .cta-section .btn-cta {
        font-size: 1rem;
        padding: .7rem 2rem;
        width: 100%;
        max-width: 280px;
    }
}

/* ── 合作伙伴移动端 ── */
@media (max-width: 576px) {
    .partner-logo { padding: .8rem 1.5rem; min-width: 100px; }
    .partner-logo img { max-height: 40px; max-width: 100px; }
}

/* ── 移动端分页优化 ── */
@media (max-width: 576px) {
    .pagination { gap: .25rem; }
    .page-link { min-width: 40px; min-height: 40px; font-size: .88rem; padding: .4rem .6rem; }
}

/* ── 滑动导航指示（移动端隐藏默认箭头）── */
@media (max-width: 768px) {
    .carousel-control-prev,
    .carousel-control-next { display: none; }
    .carousel-indicators { bottom: .75rem; gap: 6px; }
}

/* ── 防止水平溢出 ── */
html, body { overflow-x: hidden; }

/* ── iOS 弹性滚动回到顶部 ── */
section, main { -webkit-backface-visibility: hidden; }


/* 多电话展示：一行两个，自动换行 */
.phone-multi { display:inline-block; vertical-align:top; }
.phone-row { display:block; line-height:1.8; }
.phone-row .phone-link { color: rgba(255,255,255,.7); text-decoration:none; margin-right:18px; }
.phone-row .phone-link:hover { color:#fff; text-decoration:underline; }