/* ===================================================================
   嘉玺广告传媒 - 主样式表
   主色调：庄重红 #B91C1C + 金色 #C9A227
=================================================================== */

:root {
    --color-primary: #b91c1c;
    --color-primary-dark: #8b1212;
    --color-gold: #c9a227;
    --color-gold-light: #e0b94a;
    --color-dark: #1f2937;
    --color-text: #374151;
    --color-muted: #6b7280;
    --color-bg: #ffffff;
    --color-bg-soft: #f8fafc;
    --color-border: #e5e7eb;
    --container-width: 1200px;
    --radius: 6px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, .06);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, .10);
    --shadow-lg: 0 16px 48px rgba(185, 28, 28, .15);
    --transition: .3s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
    color: var(--color-text);
    line-height: 1.7;
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: color var(--transition); }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ============ 通用按钮 ============ */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
}
.btn-primary {
    background: var(--color-primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}
.btn-outline {
    background: transparent;
    color: #fff;
    border: 1.5px solid #fff;
}
.btn-outline:hover {
    background: #fff;
    color: var(--color-primary);
}
.btn-gold {
    background: var(--color-gold);
    color: #fff;
}
.btn-gold:hover { background: var(--color-gold-light); }

/* ============ 站点头部 ============ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: #fff;
    box-shadow: var(--shadow-sm);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}
.logo-mark {
    width: 48px;
    height: 48px;
    line-height: 48px;
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    border-radius: var(--radius);
    letter-spacing: 1px;
}
.logo-text strong {
    display: block;
    font-size: 18px;
    color: var(--color-dark);
    font-weight: 700;
    letter-spacing: 1px;
}
.logo-text em {
    font-style: normal;
    font-size: 12px;
    color: var(--color-muted);
    letter-spacing: .5px;
}
.main-nav {
    display: flex;
    gap: 4px;
}
.main-nav a {
    padding: 10px 18px;
    font-size: 15px;
    color: var(--color-text);
    position: relative;
    border-radius: var(--radius);
}
.main-nav a::after {
    content: "";
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 4px;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transition: transform var(--transition);
}
.main-nav a:hover { color: var(--color-primary); }
.main-nav a:hover::after,
.main-nav a.active::after { transform: scaleX(1); }
.main-nav a.active { color: var(--color-primary); font-weight: 600; }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}
.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-dark);
    transition: var(--transition);
}

/* ============ 通用区块 ============ */
.section {
    padding: 80px 0;
}
.section-soft { background: var(--color-bg-soft); }
.section-title {
    text-align: center;
    margin-bottom: 50px;
}
.section-title h2 {
    font-size: 32px;
    color: var(--color-dark);
    font-weight: 700;
    position: relative;
    display: inline-block;
    padding-bottom: 16px;
}
.section-title h2::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
    border-radius: 2px;
}
.section-title p {
    margin-top: 14px;
    color: var(--color-muted);
    font-size: 15px;
}

/* ============ 首页 Banner ============ */
.hero {
    position: relative;
    min-height: 560px;
    display: flex;
    align-items: center;
    color: #fff;
    background: linear-gradient(135deg, rgba(139, 18, 18, .92), rgba(31, 41, 55, .92)),
                radial-gradient(circle at 20% 30%, rgba(201, 162, 39, .4), transparent 50%);
    overflow: hidden;
}
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        repeating-linear-gradient(45deg, rgba(255,255,255,.03) 0 2px, transparent 2px 20px);
}
.hero-content {
    position: relative;
    z-index: 1;
    max-width: 760px;
}
.hero-content .eyebrow {
    display: inline-block;
    padding: 6px 16px;
    border: 1px solid rgba(255,255,255,.4);
    border-radius: 20px;
    font-size: 13px;
    letter-spacing: 2px;
    margin-bottom: 24px;
    color: var(--color-gold-light);
}
.hero-content h1 {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    text-shadow: 0 2px 12px rgba(0,0,0,.3);
}
.hero-content h1 span { color: var(--color-gold-light); }
.hero-content p {
    font-size: 18px;
    line-height: 1.9;
    margin-bottom: 36px;
    opacity: .92;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ============ 数据统计 ============ */
.stats {
    background: var(--color-dark);
    color: #fff;
    padding: 50px 0;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}
.stat-item .num {
    font-size: 48px;
    font-weight: 800;
    color: var(--color-gold-light);
    line-height: 1;
}
.stat-item .num span { font-size: 24px; margin-left: 2px; }
.stat-item .label {
    margin-top: 10px;
    font-size: 15px;
    color: rgba(255,255,255,.8);
}

/* ============ 关于简介 ============ */
.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}
.about-intro .text h3 {
    font-size: 26px;
    color: var(--color-dark);
    margin-bottom: 20px;
}
.about-intro .text p {
    color: var(--color-muted);
    margin-bottom: 16px;
    text-align: justify;
}
.about-intro .visual {
    height: 360px;
    border-radius: var(--radius);
    background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}
.about-intro .visual::before {
    content: "嘉玺";
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 120px;
    font-weight: 800;
    color: rgba(255,255,255,.18);
    letter-spacing: 20px;
}
.about-intro .visual::after {
    content: "18年深耕 · 一站式全案";
    position: absolute;
    bottom: 30px;
    left: 0;
    right: 0;
    text-align: center;
    color: #fff;
    font-size: 18px;
    letter-spacing: 4px;
}

/* ============ 业务卡片 ============ */
.business-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.business-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}
.business-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}
.business-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}
.business-card:hover::before { transform: scaleX(1); }
.business-card .icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(185,28,28,.1), rgba(201,162,39,.1));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}
.business-card .icon svg { width: 30px; height: 30px; }
.business-card:hover .icon {
    background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
    color: #fff;
}
.business-card h3 {
    font-size: 18px;
    color: var(--color-dark);
    margin-bottom: 10px;
}
.business-card p {
    font-size: 14px;
    color: var(--color-muted);
    line-height: 1.7;
}

/* ============ 业务独立板块 ============ */
.business-blocks {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.business-block {
    display: flex;
    align-items: center;
    gap: 28px;
    padding: 32px 40px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}
.business-block::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--color-primary), var(--color-gold));
    transform: scaleY(0);
    transform-origin: top;
    transition: transform var(--transition);
}
.business-block:hover {
    box-shadow: var(--shadow-md);
    border-color: transparent;
    transform: translateX(4px);
}
.business-block:hover::before { transform: scaleY(1); }
.business-block-num {
    font-size: 38px;
    font-weight: 800;
    color: rgba(185,28,28,.12);
    flex-shrink: 0;
    min-width: 52px;
    line-height: 1;
    transition: var(--transition);
}
.business-block:hover .business-block-num { color: rgba(185,28,28,.25); }
.business-block-icon {
    width: 64px;
    height: 64px;
    flex-shrink: 0;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(185,28,28,.1), rgba(201,162,39,.1));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}
.business-block-icon svg { width: 30px; height: 30px; }
.business-block:hover .business-block-icon {
    background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
    color: #fff;
}
.business-block-content { flex: 1; }
.business-block-content h3 {
    font-size: 20px;
    color: var(--color-dark);
    margin-bottom: 6px;
    transition: var(--transition);
}
.business-block:hover .business-block-content h3 { color: var(--color-primary); }
.business-block-content p {
    color: var(--color-muted);
    font-size: 14px;
    line-height: 1.7;
}

/* ============ 核心优势 ============ */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.advantage-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow-sm);
    border-top: 3px solid var(--color-gold);
    transition: var(--transition);
}
.advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.advantage-card .index {
    font-size: 40px;
    font-weight: 800;
    color: rgba(185,28,28,.15);
    line-height: 1;
    margin-bottom: 12px;
}
.advantage-card h3 {
    font-size: 18px;
    color: var(--color-dark);
    margin-bottom: 10px;
}
.advantage-card p {
    font-size: 14px;
    color: var(--color-muted);
}

/* ============ 案例展示 ============ */
.case-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}
.case-card {
    display: block;
    text-decoration: none;
    color: inherit;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    background: #fff;
    transition: var(--transition);
    cursor: pointer;
}
.case-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}
.case-cover {
    height: 200px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-dark));
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.case-cover::before {
    content: attr(data-label);
    color: rgba(255,255,255,.15);
    font-size: 60px;
    font-weight: 800;
    position: absolute;
    transform: rotate(-8deg);
}
.case-cover .tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--color-gold);
    color: #fff;
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 20px;
    z-index: 1;
}
.case-info {
    padding: 16px;
}
.case-info h3 {
    font-size: 16px;
    color: var(--color-dark);
    margin-bottom: 6px;
}
.case-info p {
    font-size: 13px;
    color: var(--color-muted);
}

/* ============ CTA 区块 ============ */
.cta {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    color: #fff;
    text-align: center;
    padding: 70px 0;
}
.cta h2 {
    font-size: 32px;
    margin-bottom: 16px;
}
.cta p {
    font-size: 16px;
    opacity: .9;
    margin-bottom: 30px;
}

/* ============ 内页 Banner ============ */
.page-banner {
    background: linear-gradient(135deg, rgba(139, 18, 18, .92), rgba(31, 41, 55, .92)),
                radial-gradient(circle at 70% 30%, rgba(201, 162, 39, .3), transparent 50%);
    color: #fff;
    padding: 90px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: repeating-linear-gradient(45deg, rgba(255,255,255,.03) 0 2px, transparent 2px 20px);
}
.page-banner h1 {
    position: relative;
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 12px;
}
.page-banner .breadcrumb {
    position: relative;
    font-size: 14px;
    opacity: .85;
}
.page-banner .breadcrumb a:hover { color: var(--color-gold-light); }

/* ============ 关于我们页 ============ */
.about-detail h3 {
    font-size: 22px;
    color: var(--color-dark);
    margin: 30px 0 16px;
    padding-left: 14px;
    border-left: 4px solid var(--color-primary);
}
.about-detail p {
    color: var(--color-muted);
    margin-bottom: 14px;
    text-align: justify;
}
.about-flow {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 12px;
    margin-top: 30px;
}
.flow-step {
    text-align: center;
    padding: 20px 8px;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    position: relative;
}
.flow-step .step-num {
    width: 36px;
    height: 36px;
    line-height: 36px;
    margin: 0 auto 10px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
    color: #fff;
    font-weight: 700;
}
.flow-step .step-name {
    font-size: 14px;
    color: var(--color-dark);
    font-weight: 500;
}

/* ============ 联系页 ============ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}
.contact-info ul li {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 18px 0;
    border-bottom: 1px dashed var(--color-border);
}
.contact-info ul li .icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border-radius: 50%;
    background: rgba(185,28,28,.1);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}
.contact-info ul li .text strong {
    display: block;
    color: var(--color-dark);
    margin-bottom: 4px;
}
.contact-info ul li .text span { color: var(--color-muted); font-size: 14px; }
.contact-form .form-group {
    margin-bottom: 20px;
}
.contact-form label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--color-dark);
}
.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
}
.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(185,28,28,.1);
}
.contact-form textarea { resize: vertical; min-height: 120px; }
.form-note {
    margin-top: 16px;
    font-size: 13px;
    color: var(--color-muted);
}

/* ============ 页脚 ============ */
.site-footer {
    background: var(--color-dark);
    color: rgba(255,255,255,.7);
    padding-top: 60px;
}
.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 30px;
    padding-bottom: 40px;
}
.footer-col h3,
.footer-col h4 {
    color: #fff;
    margin-bottom: 18px;
    font-size: 18px;
}
.footer-col p { font-size: 14px; line-height: 1.9; }
.footer-col ul li {
    font-size: 14px;
    padding: 4px 0;
    transition: var(--transition);
}
.footer-col ul li:hover { color: var(--color-gold-light); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.1);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
}
.footer-bottom a { color: rgba(255,255,255,.7); }
.footer-bottom a:hover { color: var(--color-gold-light); }

/* ============ 新闻列表 ============ */
.news-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.news-item {
    display: flex;
    gap: 28px;
    padding: 28px 30px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: all var(--transition);
    align-items: flex-start;
}
.news-item:hover {
    border-color: transparent;
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}
.news-item-date {
    flex-shrink: 0;
    width: 72px;
    text-align: center;
    padding: 12px 0;
    background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
    color: #fff;
    border-radius: var(--radius);
}
.news-item-date .day {
    display: block;
    font-size: 28px;
    font-weight: 800;
    line-height: 1;
}
.news-item-date .ym {
    display: block;
    font-size: 12px;
    margin-top: 4px;
    opacity: .9;
}
.news-item-body {
    flex: 1;
}
.news-item-body h3 {
    font-size: 20px;
    color: var(--color-dark);
    margin-bottom: 10px;
    transition: var(--transition);
}
.news-item:hover .news-item-body h3 { color: var(--color-primary); }
.news-item-body p {
    color: var(--color-muted);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-item-more {
    font-size: 13px;
    color: var(--color-primary);
    font-weight: 500;
}

/* ============ 问答列表 ============ */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.faq-item {
    display: block;
    padding: 24px 28px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-gold);
    border-radius: var(--radius);
    transition: all var(--transition);
}
.faq-item:hover {
    border-left-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}
.faq-q {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 10px;
}
.faq-q-mark {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    line-height: 36px;
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
    color: #fff;
    border-radius: 50%;
    font-size: 14px;
    font-weight: 700;
}
.faq-q-text {
    font-size: 17px;
    color: var(--color-dark);
    font-weight: 600;
    transition: var(--transition);
}
.faq-item:hover .faq-q-text { color: var(--color-primary); }
.faq-a-preview {
    color: var(--color-muted);
    font-size: 14px;
    line-height: 1.8;
    padding-left: 50px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.faq-more {
    display: inline-block;
    margin-top: 12px;
    margin-left: 50px;
    font-size: 13px;
    color: var(--color-primary);
    font-weight: 500;
}

/* ============ 文章正文 ============ */
.article-body {
    color: var(--color-text);
    font-size: 16px;
    line-height: 2;
}
.article-body h3 {
    font-size: 20px;
    color: var(--color-dark);
    margin: 28px 0 14px;
    padding-left: 12px;
    border-left: 3px solid var(--color-primary);
}
.article-body p { margin-bottom: 16px; text-align: justify; }
.article-body ul,
.article-body ol {
    margin: 0 0 16px 22px;
    padding-left: 8px;
}
.article-body li {
    margin-bottom: 8px;
    line-height: 1.9;
}
.article-body strong { color: var(--color-dark); }
.article-body img { border-radius: var(--radius); margin: 20px 0; }
.article-body code {
    background: var(--color-bg-soft);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 14px;
    color: var(--color-primary);
}

/* ============ 导航下拉菜单 ============ */
.nav-dropdown { position: relative; }
.nav-dropdown > a {
    padding: 10px 18px;
    font-size: 15px;
    color: var(--color-text);
    position: relative;
    border-radius: var(--radius);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
}
.nav-dropdown > a::after {
    content: "";
    display: inline-block;
    width: 0; height: 0;
    border: 4px solid transparent;
    border-top-color: currentColor;
    margin-left: 4px;
    margin-top: 6px;
    transition: var(--transition);
}
.nav-dropdown:hover > a { color: var(--color-primary); }
.nav-dropdown:hover > a::after { transform: rotate(180deg); border-top-color: var(--color-primary); }
.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 190px;
    background: #fff;
    border: 1px solid rgba(0,0,0,.06);
    box-shadow: 0 12px 40px rgba(0,0,0,.12);
    border-radius: 10px;
    padding: 10px;
    opacity: 0;
    visibility: hidden;
    transition: all .28s ease;
    z-index: 200;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px;
}
.nav-dropdown-menu::before {
    content: "";
    position: absolute;
    top: -7px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 14px; height: 14px;
    background: #fff;
    border-top: 1px solid rgba(0,0,0,.06);
    border-left: 1px solid rgba(0,0,0,.06);
}
.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}
.nav-dropdown-menu a {
    display: block;
    padding: 10px 16px;
    color: var(--color-dark);
    font-size: 14px;
    text-decoration: none;
    border-radius: 6px;
    transition: all .2s ease;
    white-space: nowrap;
    text-align: center;
}
.nav-dropdown-menu a:hover {
    background: linear-gradient(135deg, rgba(185,28,28,.08), rgba(201,162,39,.08));
    color: var(--color-primary);
    font-weight: 600;
}

/* ============ 业务索引页：箭头 + 链接化 ============ */
a.business-block { text-decoration: none; color: inherit; display: flex; }
.business-block-arrow {
    flex-shrink: 0;
    align-self: center;
    color: var(--color-muted);
    font-size: 22px;
    transition: var(--transition);
}
a.business-block:hover .business-block-arrow { color: var(--color-primary); transform: translateX(6px); }

/* 首页业务卡片链接化 */
a.business-card { text-decoration: none; color: inherit; display: block; }

/* ============ 业务子栏目详情页 ============ */
.business-cat-header { display: flex; gap: 28px; align-items: flex-start; margin-bottom: 48px; }
.business-cat-icon {
    width: 80px; height: 80px; flex-shrink: 0;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(185,28,28,.1), rgba(201,162,39,.12));
    color: var(--color-primary);
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
}
.business-cat-icon svg { width: 38px; height: 38px; }
.business-cat-header-text h2 { font-size: 28px; color: var(--color-dark); margin-bottom: 10px; }
.business-cat-header-text p { color: var(--color-muted); font-size: 16px; line-height: 1.8; }
.business-cat-features { margin-bottom: 40px; }
.business-cat-features h3 { font-size: 22px; color: var(--color-dark); margin-bottom: 28px; position: relative; padding-left: 16px; }
.business-cat-features h3::before { content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 4px; height: 20px; background: linear-gradient(180deg, var(--color-primary), var(--color-gold)); border-radius: 2px; }
.features-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.feature-item {
    display: flex; gap: 18px; align-items: flex-start;
    padding: 28px; background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: var(--transition);
}
.feature-item:hover { box-shadow: var(--shadow-sm); border-color: rgba(185,28,28,.25); transform: translateY(-2px); }
.feature-item-num {
    font-size: 28px; font-weight: 800;
    color: rgba(185,28,28,.15);
    flex-shrink: 0; min-width: 36px; line-height: 1;
    transition: var(--transition);
}
.feature-item:hover .feature-item-num { color: rgba(185,28,28,.3); }
.feature-item-body h4 { font-size: 16px; color: var(--color-dark); margin-bottom: 8px; }
.feature-item-body p { color: var(--color-muted); font-size: 14px; line-height: 1.8; }

/* 其他业务领域导航 */
.business-cats-nav { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.business-cat-nav-item {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 22px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 30px;
    text-decoration: none;
    color: var(--color-dark);
    font-size: 14px;
    transition: var(--transition);
}
.business-cat-nav-item:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(185,28,28,.25);
}
.business-cat-nav-item .cat-nav-icon { display: flex; align-items: center; color: var(--color-primary); transition: var(--transition); }
.business-cat-nav-item .cat-nav-icon svg { width: 18px; height: 18px; }
.business-cat-nav-item:hover .cat-nav-icon { color: #fff; }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
    .business-grid { grid-template-columns: repeat(3, 1fr); }
    .case-grid { grid-template-columns: repeat(3, 1fr); }
    .about-flow { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 768px) {
    .nav-dropdown-menu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; padding: 0; grid-template-columns: 1fr; gap: 0; margin-top: 4px; }
    .nav-dropdown-menu::before { display: none; }
    .nav-dropdown > a { width: 100%; justify-content: space-between; }
    .nav-dropdown > a::after { display: none; }
    .nav-dropdown-menu a { text-align: left; padding: 12px 8px 12px 28px; border-bottom: 1px solid var(--color-border); border-radius: 0; }
    .business-cat-header { flex-direction: column; gap: 16px; }
    .features-grid { grid-template-columns: 1fr; }
    .business-block { flex-wrap: wrap; gap: 16px; padding: 24px 20px; }
    .business-block-num { font-size: 28px; min-width: 36px; }
    .business-block-icon { width: 48px; height: 48px; }
    .business-block-icon svg { width: 24px; height: 24px; }
    .business-block-content h3 { font-size: 18px; }
    .nav-toggle { display: flex; }
    .main-nav {
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 12px 20px;
        box-shadow: var(--shadow-md);
        gap: 0;
        display: none;
    }
    .main-nav.open { display: flex; }
    .main-nav a { padding: 14px 8px; border-bottom: 1px solid var(--color-border); border-radius: 0; }
    .main-nav a::after { display: none; }
    .hero-content h1 { font-size: 32px; }
    .hero-content p { font-size: 15px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .about-intro { grid-template-columns: 1fr; }
    .about-intro .visual { height: 240px; }
    .business-grid { grid-template-columns: repeat(2, 1fr); }
    .case-grid { grid-template-columns: repeat(2, 1fr); }
    .advantage-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; }
    .section { padding: 56px 0; }
    .section-title h2 { font-size: 26px; }
    .page-banner { padding: 60px 0; }
    .page-banner h1 { font-size: 28px; }
    .about-flow { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
    .business-grid,
    .case-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }
    .hero-content h1 { font-size: 26px; }
}

/* ============ 项目案例子栏目布局 ============ */
.cat-layout { display: grid; grid-template-columns: 260px 1fr; gap: 36px; align-items: start; }
.cat-sidebar { position: sticky; top: 90px; background: #fff; border: 1px solid var(--color-border); border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-sm); }
.cat-sidebar-hd { padding: 22px 20px 16px; background: linear-gradient(135deg, var(--color-primary), #c89830); color: #fff; }
.cat-sidebar-hd h3 { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.cat-sidebar-hd span { font-size: 12px; opacity: .85; }
.cat-sidebar-list { list-style: none; padding: 8px; margin: 0; }
.cat-side-link { display: flex; align-items: center; gap: 10px; padding: 11px 14px; border-radius: 8px; color: var(--color-text); font-size: 14px; transition: all .22s ease; border-left: 3px solid transparent; }
.cat-side-link:hover { background: var(--color-bg-soft); color: var(--color-primary); padding-left: 17px; }
.cat-side-link.active { background: var(--color-bg-soft); color: var(--color-primary); font-weight: 600; border-left-color: var(--color-primary); }
.cat-side-icon { width: 20px; height: 20px; display: inline-flex; align-items: center; justify-content: center; }
.cat-side-icon svg { width: 18px; height: 18px; }
.cat-side-text { flex: 1; }
.cat-side-arrow { color: var(--color-muted); font-size: 16px; }
.cat-side-link.active .cat-side-arrow { color: var(--color-primary); }
.cat-sidebar-cta { padding: 20px; background: var(--color-bg-soft); border-top: 1px solid var(--color-border); text-align: center; }
.cat-sidebar-cta h4 { font-size: 15px; margin-bottom: 6px; color: var(--color-dark); }
.cat-sidebar-cta p { font-size: 12px; color: var(--color-muted); margin-bottom: 14px; }

.cat-content { min-width: 0; }
.cat-article { background: #fff; border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-sm); }
.cat-article-head { display: flex; align-items: center; gap: 20px; padding: 34px 36px 28px; border-bottom: 1px solid var(--color-border); background: linear-gradient(135deg, #fff, var(--color-bg-soft)); }
.cat-article-icon { width: 64px; height: 64px; flex-shrink: 0; border-radius: 16px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--color-primary), #e0b840); color: #fff; box-shadow: 0 8px 22px rgba(200,152,48,.32); }
.cat-article-icon svg { width: 36px; height: 36px; }
.cat-article-titlebox h2 { font-size: 26px; font-weight: 800; color: var(--color-dark); line-height: 1.3; margin-bottom: 8px; }
.cat-article-titlebox p { font-size: 14px; color: var(--color-muted); line-height: 1.6; }
.cat-article-meta { display: flex; flex-wrap: wrap; gap: 20px; padding: 16px 36px; border-bottom: 1px solid var(--color-border); color: var(--color-muted); font-size: 13px; background: #faf9f5; }
.cat-article-body { padding: 30px 36px 36px; }
.cat-article-body > p { font-size: 15px; line-height: 1.8; color: var(--color-text); margin-bottom: 20px; }
.cat-body-title { font-size: 20px; font-weight: 700; color: var(--color-dark); margin: 28px 0 20px; padding-left: 14px; border-left: 4px solid var(--color-primary); }
.cat-feature-list { display: flex; flex-direction: column; gap: 16px; }
.cat-feature-card { display: flex; gap: 18px; padding: 22px 24px; background: var(--color-bg-soft); border-radius: 10px; transition: all .26s ease; border: 1px solid transparent; }
.cat-feature-card:hover { background: #fff; border-color: var(--color-border); box-shadow: 0 10px 30px rgba(0,0,0,.07); transform: translateY(-2px); }
.cat-feature-num { flex-shrink: 0; width: 42px; height: 42px; border-radius: 50%; background: linear-gradient(135deg, var(--color-primary), #e0b840); color: #fff; font-size: 15px; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.cat-feature-info h4 { font-size: 16px; font-weight: 700; color: var(--color-dark); margin-bottom: 6px; }
.cat-feature-info p { font-size: 14px; line-height: 1.7; color: var(--color-text); }
.cat-article-cta-box { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; margin-top: 32px; padding: 26px 30px; background: linear-gradient(135deg, var(--color-dark), #2a2a2a); border-radius: 10px; color: #fff; }
.cat-article-cta-box h3 { font-size: 19px; font-weight: 700; margin-bottom: 6px; }
.cat-article-cta-box p { font-size: 13px; opacity: .85; }

@media (max-width: 992px) {
    .cat-layout { grid-template-columns: 1fr; gap: 24px; }
    .cat-sidebar { position: static; }
    .cat-article-head, .cat-article-meta, .cat-article-body { padding-left: 22px; padding-right: 22px; }
}
/* ============ 子栏目文章卡片网格 ============ */
.cat-article-list { margin-top: 36px; }
.cat-news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cat-news-card { display: block; border-radius: 10px; overflow: hidden; background: #fff; border: 1px solid var(--color-border); transition: all .26s ease; }
.cat-news-card:hover { box-shadow: 0 14px 36px rgba(0,0,0,.1); transform: translateY(-3px); border-color: transparent; }
.cat-news-cover { position: relative; aspect-ratio: 16/10; background: linear-gradient(135deg,#f0e6d0,#e0d0a8); overflow: hidden; }
.cat-news-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.cat-news-card:hover .cat-news-cover img { transform: scale(1.06); }
.cat-news-date { position: absolute; left: 12px; bottom: 12px; background: rgba(0,0,0,.6); color: #fff; border-radius: 6px; padding: 6px 11px; display: flex; flex-direction: column; align-items: center; line-height: 1.1; font-size: 11px; }
.cat-news-date strong { font-size: 18px; margin-top: 2px; }
.cat-news-info { padding: 16px 18px 18px; }
.cat-news-info h4 { font-size: 15px; font-weight: 700; color: var(--color-dark); line-height: 1.5; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.cat-news-info p { font-size: 13px; color: var(--color-muted); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
@media (max-width: 992px) and (min-width:769px) { .cat-news-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) { .cat-news-grid { grid-template-columns: 1fr; } }
/* ============ 案例区图片样式 ============ */
.case-cover { position: relative; aspect-ratio: 16/10; overflow: hidden; background: linear-gradient(135deg,#f0e6d0,#e0d0a8); }
.case-cover img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .45s ease; }
.case-card:hover .case-cover img { transform: scale(1.07); }
.case-cover .tag { position: absolute; left: 12px; top: 12px; z-index: 2; }
/* ============ 关于页团队与CTA ============ */
.about-team { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.team-card { background: #fff; border: 1px solid var(--color-border); border-radius: 12px; padding: 28px 22px; text-align: center; transition: all .26s ease; }
.team-card:hover { box-shadow: 0 14px 36px rgba(0,0,0,.08); transform: translateY(-3px); border-color: transparent; }
.team-num { width: 48px; height: 48px; margin: 0 auto 16px; border-radius: 50%; background: linear-gradient(135deg, var(--color-primary), #e0b840); color: #fff; font-size: 16px; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.team-card h3 { font-size: 17px; font-weight: 700; color: var(--color-dark); margin-bottom: 10px; }
.team-card p { font-size: 13px; color: var(--color-muted); line-height: 1.7; }
.about-cta { margin-top: 40px; padding: 36px 40px; background: linear-gradient(135deg, var(--color-dark), #2a2a2a); border-radius: 12px; color: #fff; text-align: center; }
.about-cta h3 { font-size: 22px; font-weight: 700; margin-bottom: 10px; }
.about-cta p { font-size: 14px; opacity: .85; margin-bottom: 22px; }
@media (max-width: 992px) and (min-width:769px) { .about-team { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) { .about-team { grid-template-columns: 1fr; } }
/* ============ 移动端深度适配（补充） ============ */

/* 平板横屏 1024-769px */
@media (max-width: 1024px) and (min-width: 769px) {
    .advantage-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-inner { grid-template-columns: repeat(2, 1fr); }
}

/* 平板/大手机 768px */
@media (max-width: 768px) {
    .header-inner { height: 60px; }
    .logo-mark { width: 40px; height: 40px; font-size: 18px; }
    .logo-text strong { font-size: 16px; }
    .logo-text em { font-size: 11px; }
    .main-nav { top: 60px; max-height: calc(100vh - 60px); overflow-y: auto; }
    .nav-toggle span { width: 22px; }

    .hero { min-height: 400px; padding: 48px 0; }
    .hero-content { max-width: 100%; }
    .hero-content .eyebrow { font-size: 12px; }
    .hero-content h1 { font-size: 28px; margin-bottom: 16px; }
    .hero-content p { font-size: 15px; margin-bottom: 28px; }

    .section { padding: 48px 0; }
    .section-title { margin-bottom: 32px; }
    .section-title h2 { font-size: 22px; }
    .section-title p { font-size: 14px; }

    .advantage-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .footer-inner { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }

    .business-cat-nav {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        flex-wrap: nowrap;
        padding-bottom: 8px;
    }
    .business-cat-nav-item { flex-shrink: 0; }

    .case-info { padding: 14px 12px; }
    .case-info h3 { font-size: 15px; }
    .case-info p { font-size: 13px; -webkit-line-clamp: 2; }

    .article-detail h1 { font-size: 22px !important; line-height: 1.5; }
    .article-body { font-size: 15px; line-height: 1.9; }
    .article-body h3 { font-size: 18px; }
    .article-meta { gap: 12px !important; font-size: 13px !important; }

    .page-banner { padding: 40px 0 !important; }
    .page-banner h1 { font-size: 22px; }
    .page-banner h2 { font-size: 22px !important; }
    .breadcrumb { font-size: 13px; }

    .contact-form input,
    .contact-form textarea { font-size: 16px; }
    .btn { padding: 10px 24px; font-size: 14px; }

    .stat-item .num { font-size: 28px; }
    .stat-item .label { font-size: 13px; }

    .faq-q-text { font-size: 15px; }
    .faq-a-preview { padding-left: 46px; font-size: 13px; }
    .faq-more { margin-left: 46px; }
    .faq-q-mark { width: 32px; height: 32px; line-height: 32px; font-size: 13px; }

    .cat-layout { grid-template-columns: 1fr; }
    .cat-sidebar { position: static; max-height: none; }
    .cat-news-grid { grid-template-columns: 1fr; }
}

/* 小手机 480px */
@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .header-inner { height: 56px; }
    .logo-mark { width: 36px; height: 36px; font-size: 16px; }
    .logo-text strong { font-size: 15px; }
    .logo-text em { display: none; }
    .main-nav { top: 56px; }

    .hero { min-height: 320px; padding: 40px 0; }
    .hero-content h1 { font-size: 22px; }
    .hero-content p { font-size: 14px; margin-bottom: 20px; }
    .hero-content .eyebrow { padding: 4px 12px; }

    .section { padding: 36px 0; }
    .section-title { margin-bottom: 24px; }
    .section-title h2 { font-size: 20px; }

    .stats-grid { gap: 16px; }
    .stat-item .num { font-size: 22px; }
    .stat-item .label { font-size: 12px; }

    .business-grid { grid-template-columns: 1fr; }
    .case-grid { grid-template-columns: 1fr; }
    .advantage-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; }

    .case-info h3 { font-size: 14px; }
    .case-info p { display: none; }
    .case-cover { height: 180px; }

    .article-detail h1 { font-size: 18px !important; }
    .article-body { font-size: 14px; line-height: 1.8; }
    .article-body h3 { font-size: 16px; }
    .article-meta { font-size: 12px !important; gap: 8px !important; }

    .page-banner { padding: 32px 0 !important; }
    .page-banner h1 { font-size: 20px; }
    .page-banner h2 { font-size: 20px !important; }

    .btn { padding: 8px 20px; font-size: 13px; }
    .about-flow { grid-template-columns: 1fr; }
}

/* ============ 404 页面 ============ */
.error-section {
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 0;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-soft) 100%);
}
.error-wrap {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}
.error-code {
    font-size: 140px;
    font-weight: 900;
    line-height: 1;
    background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    letter-spacing: -4px;
}
.error-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    color: var(--color-muted);
}
.error-icon svg {
    width: 100%;
    height: 100%;
}
.error-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 16px;
}
.error-desc {
    font-size: 15px;
    color: var(--color-muted);
    line-height: 2;
    margin-bottom: 36px;
}
.error-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}
.error-actions .btn {
    min-width: 140px;
    text-align: center;
}
.btn-outline-dark {
    background: transparent;
    color: var(--color-dark);
    border: 1.5px solid var(--color-border);
}
.btn-outline-dark:hover {
    background: var(--color-dark);
    color: #fff;
    border-color: var(--color-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.error-links {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    font-size: 14px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
}
.error-links-label {
    color: var(--color-muted);
}
.error-links a {
    color: var(--color-text);
    font-weight: 500;
    transition: var(--transition);
}
.error-links a:hover {
    color: var(--color-primary);
}

@media (max-width: 768px) {
    .error-code { font-size: 90px; }
    .error-title { font-size: 22px; }
    .error-desc { font-size: 14px; }
    .error-actions { flex-direction: column; align-items: center; }
    .error-actions .btn { width: 80%; }
    .error-links { flex-direction: column; gap: 10px; }
}
@media (max-width: 480px) {
    .error-code { font-size: 72px; }
}