@charset "UTF-8";
/* ===== 极简黑白主题 - 精诚证件制作中心 ===== */
/* 主色:#000000 辅助:#f5f5f5 强调:#e74c3c */

/* ===== Reset & Base ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    color: #000000;
    line-height: 1.7;
    background: #ffffff;
    font-size: 15px;
}
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

/* ===== Header & Navigation ===== */
.header {
    background: #ffffff;
    border-bottom: 1px solid #000000;
    position: sticky;
    top: 0;
    z-index: 999;
}
.header-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}
.logo {
    font-size: 22px;
    font-weight: bold;
    color: #000000;
    letter-spacing: 3px;
}
.logo span {
    color: #999;
    font-size: 11px;
    display: block;
    font-weight: normal;
    letter-spacing: 2px;
    margin-top: 2px;
}
.nav { display: flex; }
.nav a {
    padding: 28px 16px;
    font-size: 14px;
    color: #000000;
    transition: color 0.3s;
    letter-spacing: 1px;
}
.nav a:hover, .nav a.active { color: #e74c3c; }
.nav a.active { border-bottom: 2px solid #e74c3c; }

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 10px;
    background: none;
    border: none;
    z-index: 1000;
}
.hamburger span {
    width: 26px;
    height: 2px;
    background: #000000;
    margin: 4px 0;
    transition: 0.3s;
}
.hamburger.active span:nth-child(1) { transform: translateY(12px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-12px) rotate(-45deg); }

/* ===== Banner / Carousel ===== */
.banner { position: relative; overflow: hidden; height: 500px; }
.banner-slider { display: flex; transition: transform 0.7s ease; height: 100%; }
.banner-slide { min-width: 100%; height: 100%; position: relative; }
.banner-slide img { width: 100%; height: 100%; object-fit: cover; }
.banner-slide .overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.75), rgba(0,0,0,0.45));
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #ffffff;
    padding: 40px;
}
.banner-slide .overlay h2 {
    font-size: 44px;
    margin-bottom: 18px;
    font-weight: bold;
    letter-spacing: 4px;
}
.banner-slide .overlay p {
    font-size: 16px;
    max-width: 720px;
    opacity: 0.9;
    letter-spacing: 1px;
}
.banner-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.4);
    color: #fff;
    font-size: 24px;
    padding: 14px 20px;
    cursor: pointer;
    transition: 0.3s;
}
.banner-btn:hover { background: #000000; border-color: #000000; }
.banner-btn.prev { left: 30px; }
.banner-btn.next { right: 30px; }
.banner-dots {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}
.banner-dots li {
    width: 28px;
    height: 3px;
    background: rgba(255,255,255,0.4);
    cursor: pointer;
    transition: 0.3s;
}
.banner-dots li.active { background: #e74c3c; }

/* ===== Section Common ===== */
.section { padding: 80px 40px; }
.section-alt { background: #f5f5f5; }
.section-title { text-align: center; margin-bottom: 50px; }
.section-title h2 {
    font-size: 32px;
    color: #000000;
    margin-bottom: 14px;
    letter-spacing: 3px;
    font-weight: bold;
}
.section-title p { color: #888; font-size: 14px; letter-spacing: 1px; }
.section-title .bar {
    display: block;
    width: 50px;
    height: 2px;
    background: #e74c3c;
    margin: 18px auto 0;
}
.container { max-width: 1280px; margin: 0 auto; }

/* ===== About ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about-img { border: 1px solid #000000; overflow: hidden; }
.about-img img { width: 100%; height: 380px; object-fit: cover; }
.about-text h3 { font-size: 26px; color: #000000; margin-bottom: 20px; letter-spacing: 2px; }
.about-text p { margin-bottom: 14px; color: #555; line-height: 1.9; }
.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-top: 25px;
}
.about-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: #333;
}
.about-features li::before { content: "—"; color: #e74c3c; font-weight: bold; }

/* ===== Masonry (瀑布流) ===== */
.masonry { column-count: 3; column-gap: 24px; }
.masonry-item { break-inside: avoid; margin-bottom: 24px; }

/* ===== Product Card ===== */
.product-card {
    background: #ffffff;
    border: 1px solid #e0e0e0;
    overflow: hidden;
    transition: border-color 0.3s, transform 0.3s;
}
.product-card:hover { border-color: #000000; transform: translateY(-4px); }
.product-card img { width: 100%; height: 220px; object-fit: cover; }
.product-card .info { padding: 22px; }
.product-card h4 { font-size: 18px; color: #000000; margin-bottom: 10px; letter-spacing: 1px; }
.product-card p { font-size: 13px; color: #888; line-height: 1.7; }
.product-card .tag {
    display: inline-block;
    margin-top: 12px;
    padding: 3px 10px;
    background: #000000;
    color: #fff;
    font-size: 11px;
    letter-spacing: 1px;
}

/* ===== Case Card ===== */
.case-card {
    background: #ffffff;
    border: 1px solid #e0e0e0;
    overflow: hidden;
    transition: border-color 0.3s;
}
.case-card:hover { border-color: #000000; }
.case-card img { width: 100%; height: 240px; object-fit: cover; }
.case-card .info { padding: 20px; }
.case-card h4 { font-size: 16px; color: #000000; margin-bottom: 8px; }
.case-card p { font-size: 13px; color: #888; }
.case-card .case-date { font-size: 12px; color: #e74c3c; margin-top: 10px; letter-spacing: 1px; }

/* ===== News ===== */
.news-item {
    background: #ffffff;
    border: 1px solid #e0e0e0;
    overflow: hidden;
    transition: border-color 0.3s;
}
.news-item:hover { border-color: #000000; }
.news-item img { width: 100%; height: 200px; object-fit: cover; }
.news-item .info { padding: 22px; }
.news-item .news-date { font-size: 12px; color: #999; letter-spacing: 1px; margin-bottom: 8px; }
.news-item h4 { font-size: 17px; color: #000000; margin-bottom: 10px; line-height: 1.5; }
.news-item h4 a:hover { color: #e74c3c; }
.news-item p { font-size: 13px; color: #888; line-height: 1.7; }
.news-item .more {
    display: inline-block;
    margin-top: 12px;
    font-size: 12px;
    color: #000000;
    border-bottom: 1px solid #000000;
    padding-bottom: 2px;
    letter-spacing: 1px;
}
.news-item:hover .more { color: #e74c3c; border-color: #e74c3c; }

/* ===== Reviews ===== */
.review-card {
    background: #ffffff;
    padding: 30px;
    border: 1px solid #e0e0e0;
    transition: border-color 0.3s;
}
.review-card:hover { border-color: #000000; }
.review-stars { color: #e74c3c; font-size: 14px; letter-spacing: 3px; margin-bottom: 14px; }
.review-card p { color: #444; margin-bottom: 18px; line-height: 1.8; font-size: 14px; }
.review-author {
    display: flex;
    align-items: center;
    gap: 14px;
    padding-top: 16px;
    border-top: 1px solid #eee;
}
.review-author .avatar {
    width: 42px;
    height: 42px;
    background: #000000;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 16px;
}
.review-author .name { font-weight: bold; color: #000000; font-size: 14px; }
.review-author .title { font-size: 12px; color: #999; }

/* ===== FAQ ===== */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
    background: #ffffff;
    border: 1px solid #e0e0e0;
    margin-bottom: 16px;
    overflow: hidden;
    transition: border-color 0.3s;
}
.faq-item.open { border-color: #000000; }
.faq-question {
    padding: 22px 26px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: bold;
    color: #000000;
    font-size: 15px;
    letter-spacing: 1px;
}
.faq-question .icon { transition: transform 0.3s; color: #e74c3c; font-size: 20px; }
.faq-item.open .faq-question .icon { transform: rotate(45deg); }
.faq-answer {
    padding: 0 26px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s, padding 0.3s;
    color: #555;
    font-size: 14px;
    line-height: 1.8;
}
.faq-item.open .faq-answer { padding: 0 26px 22px; max-height: 400px; }

/* ===== Contact ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.contact-info { background: #ffffff; padding: 40px; border: 1px solid #000000; }
.contact-info h3 { font-size: 22px; color: #000000; margin-bottom: 26px; letter-spacing: 2px; }
.contact-info li {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 22px;
    font-size: 14px;
    color: #555;
    line-height: 1.8;
}
.contact-info li .icon {
    width: 38px;
    height: 38px;
    background: #000000;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}
.contact-info li .label { font-weight: bold; color: #000000; display: block; margin-bottom: 4px; }
.contact-form { background: #f5f5f5; padding: 40px; }
.contact-form h3 { font-size: 22px; color: #000000; margin-bottom: 26px; letter-spacing: 2px; }
.form-group { margin-bottom: 18px; }
.form-group input, .form-group textarea {
    width: 100%;
    padding: 13px 16px;
    border: 1px solid #ccc;
    background: #fff;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s;
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: #000000; }
.form-group textarea { height: 120px; resize: vertical; }
.btn-primary {
    background: #000000;
    color: #fff;
    border: none;
    padding: 14px 38px;
    font-size: 14px;
    cursor: pointer;
    transition: 0.3s;
    letter-spacing: 2px;
    font-family: inherit;
}
.btn-primary:hover { background: #e74c3c; }

/* ===== Footer ===== */
.footer { background: #000000; color: #ccc; padding: 60px 40px 24px; }
.footer-grid {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}
.footer-col h4 {
    font-size: 15px;
    margin-bottom: 22px;
    color: #fff;
    letter-spacing: 2px;
}
.footer-col a {
    display: block;
    padding: 6px 0;
    color: #999;
    font-size: 13px;
    transition: color 0.3s;
}
.footer-col a:hover { color: #e74c3c; }
.footer-col p { font-size: 13px; line-height: 1.9; color: #999; }
.footer-bottom {
    text-align: center;
    margin-top: 40px;
    padding-top: 22px;
    border-top: 1px solid #222;
    font-size: 12px;
    color: #666;
}

/* ===== Page Banner (inner pages) ===== */
.page-banner {
    background: #000000;
    padding: 70px 40px;
    text-align: center;
    color: #fff;
}
.page-banner h1 { font-size: 36px; margin-bottom: 12px; letter-spacing: 4px; }
.page-banner p { font-size: 15px; opacity: 0.7; letter-spacing: 1px; }

/* ===== Breadcrumb ===== */
.breadcrumb {
    background: #f5f5f5;
    padding: 14px 40px;
    font-size: 13px;
    color: #888;
    border-bottom: 1px solid #e0e0e0;
}
.breadcrumb .container { display: flex; align-items: center; }
.breadcrumb a { color: #888; }
.breadcrumb a:hover { color: #e74c3c; }
.breadcrumb .sep { margin: 0 10px; color: #ccc; }

/* ===== Content / Article Page ===== */
.article-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 50px 40px;
}
.article-main { min-width: 0; }
.article-content {
    background: #ffffff;
    padding: 40px;
    border: 1px solid #e0e0e0;
}
.article-content h1 {
    font-size: 26px;
    color: #000000;
    margin-bottom: 18px;
    line-height: 1.5;
    letter-spacing: 1px;
}
.article-meta {
    color: #999;
    font-size: 13px;
    margin-bottom: 28px;
    padding-bottom: 18px;
    border-bottom: 1px solid #eee;
}
.article-meta span { margin-right: 22px; }
.article-body { font-size: 15px; line-height: 1.9; color: #333; }
.article-body h2 {
    font-size: 20px;
    color: #000000;
    margin: 28px 0 14px;
    padding-left: 14px;
    border-left: 3px solid #e74c3c;
}
.article-body h3 { font-size: 17px; color: #000000; margin: 22px 0 10px; }
.article-body p { margin-bottom: 16px; }
.article-body ul { margin: 16px 0; padding-left: 22px; }
.article-body ul li { margin-bottom: 8px; list-style: disc; line-height: 1.8; }
.article-img {
    width: 100%;
    max-width: 560px;
    margin: 24px auto;
    border: 1px solid #e0e0e0;
}

.article-sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-widget {
    background: #ffffff;
    padding: 24px;
    border: 1px solid #e0e0e0;
}
.sidebar-widget h3 {
    font-size: 16px;
    color: #000000;
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 2px solid #000000;
    letter-spacing: 1px;
}
.sidebar-widget ul li { margin-bottom: 12px; }
.sidebar-widget ul li a {
    font-size: 13px;
    color: #555;
    line-height: 1.6;
    transition: 0.3s;
}
.sidebar-widget ul li a:hover { color: #e74c3c; }
.sidebar-widget.contact-widget p { font-size: 13px; color: #555; margin-bottom: 10px; line-height: 1.8; }
.sidebar-widget.contact-widget .btn-primary { margin-top: 12px; display: inline-block; padding: 10px 26px; }

/* ===== Links Section ===== */
.link-category { margin-bottom: 40px; }
.link-category h3 {
    font-size: 18px;
    color: #000000;
    margin-bottom: 18px;
    padding-left: 14px;
    border-left: 3px solid #e74c3c;
    letter-spacing: 1px;
}
.links-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
}
.link-item {
    background: #fff;
    padding: 18px;
    text-align: center;
    border: 1px solid #e0e0e0;
    font-size: 13px;
    color: #555;
    transition: 0.3s;
}
.link-item:hover { background: #000000; color: #fff; border-color: #000000; }
.links-notice {
    background: #fff;
    padding: 28px 32px;
    border: 1px solid #e0e0e0;
    margin-bottom: 30px;
}
.links-notice h3 { font-size: 18px; color: #000000; margin-bottom: 14px; }
.links-notice p { font-size: 14px; color: #555; line-height: 1.9; margin-bottom: 8px; }
.apply-link {
    background: #f5f5f5;
    padding: 36px;
    text-align: center;
    border: 1px solid #e0e0e0;
}
.apply-link h3 { font-size: 20px; color: #000000; margin-bottom: 14px; }
.apply-link p { color: #555; line-height: 1.9; margin-bottom: 22px; max-width: 620px; margin-left: auto; margin-right: auto; }

/* ===== Back to Top ===== */
.back-top {
    position: fixed;
    right: 24px;
    bottom: 100px;
    width: 48px;
    height: 48px;
    background: #000000;
    color: #fff;
    border: 1px solid #000000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    cursor: pointer;
    z-index: 998;
    opacity: 0;
    transition: 0.3s;
}
.back-top.show { opacity: 1; }
.back-top:hover { background: #e74c3c; border-color: #e74c3c; }

/* ===== Pagination ===== */
.pagination { text-align: center; margin: 40px 0; }
.pagination a {
    display: inline-block;
    padding: 9px 15px;
    margin: 0 4px;
    border: 1px solid #e0e0e0;
    color: #555;
    font-size: 13px;
    transition: 0.3s;
}
.pagination a:hover, .pagination a.active { background: #000000; color: #fff; border-color: #000000; }

/* ===== Section Preview (首页栏目预览) ===== */
.section-preview {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.preview-card {
    border: 1px solid #e0e0e0;
    background: #fff;
    overflow: hidden;
    transition: border-color 0.3s;
}
.preview-card:hover { border-color: #000000; }
.preview-card img { width: 100%; height: 180px; object-fit: cover; }
.preview-card .info { padding: 20px; }
.preview-card h4 { font-size: 16px; color: #000000; margin-bottom: 8px; }
.preview-card p { font-size: 13px; color: #888; line-height: 1.7; }
.preview-card .more-link {
    display: inline-block;
    margin-top: 10px;
    font-size: 12px;
    color: #e74c3c;
    letter-spacing: 1px;
}

/* ===== Stats / Numbers ===== */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}
.stat-box { padding: 30px 20px; border: 1px solid #e0e0e0; }
.stat-num { font-size: 38px; font-weight: bold; color: #000000; letter-spacing: 1px; }
.stat-label { font-size: 13px; color: #888; margin-top: 8px; letter-spacing: 1px; }

/* ===== Timeline ===== */
.timeline { position: relative; max-width: 900px; margin: 0 auto; padding-left: 40px; }
.timeline::before {
    content: "";
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #000000;
}
.timeline-item { position: relative; margin-bottom: 36px; }
.timeline-item::before {
    content: "";
    position: absolute;
    left: -36px;
    top: 6px;
    width: 12px;
    height: 12px;
    background: #e74c3c;
    border: 2px solid #fff;
    box-shadow: 0 0 0 2px #000000;
    z-index: 1;
}
.timeline-year { font-size: 20px; font-weight: bold; color: #e74c3c; margin-bottom: 8px; letter-spacing: 1px; }
.timeline-content {
    background: #fff;
    padding: 22px 26px;
    border: 1px solid #e0e0e0;
}
.timeline-content h4 { font-size: 17px; color: #000000; margin-bottom: 8px; }
.timeline-content p { color: #555; line-height: 1.8; font-size: 14px; }