/* ============================================
   万盛展览 - 企业级营销官网样式系统 v3.4
   优化：导航栏精致化、Logo品牌、子页完善、服务页扩充、页脚自动年份
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700;900&family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --primary: #0a1628;
    --primary-light: #1e3a5f;
    --primary-dark: #060e1a;
    --accent: #d4af37;
    --accent-light: #f5e6b8;
    --accent-dark: #b8962a;
    --success: #10b981;
    --text: #1f2937;
    --text-light: #6b7280;
    --bg: #f8fafc;
    --bg-card: #ffffff;
    --border: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius: 1rem;
    --radius-lg: 1.5rem;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Noto Sans SC', 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    padding-top: 80px;
}

.container { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }

/* ===== 导航栏（美化版） ===== */
.navbar {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: var(--transition);
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.navbar.scrolled {
    background: rgba(255,255,255,0.98);
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    border-bottom-color: rgba(0,0,0,0.08);
}
.navbar .container {
    display: flex; justify-content: space-between; align-items: center;
    height: 80px;
}

/* Logo区域 */
.logo-group { 
    display: flex; align-items: center; text-decoration: none; gap: 0.75rem;
}
.logo-img {
    height: 44px; width: auto; display: block;
    max-width: 160px; object-fit: contain;
    transition: var(--transition);
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}
.logo-text-group {
    display: flex; flex-direction: column;
}
.logo-main-text {
    font-size: 1.35rem; font-weight: 900; letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text; background-clip: text; color: transparent;
    line-height: 1.2;
}
.logo-sub {
    font-size: 0.7rem; color: var(--text-light); letter-spacing: 1.5px;
    text-transform: uppercase; margin-top: 2px;
}

/* 导航链接 */
.nav-links {
    display: flex; align-items: center; gap: 0.5rem; list-style: none;
}
.nav-links > li { position: relative; }
.nav-links > li > a {
    text-decoration: none; color: var(--text); font-weight: 500;
    padding: 0.6rem 1rem; border-radius: 2rem; font-size: 0.9rem;
    transition: var(--transition); position: relative; display: flex; align-items: center; gap: 0.35rem;
}
.nav-links > li > a::after {
    content: ''; position: absolute; bottom: 0; left: 50%; width: 0; height: 2px;
    background: var(--accent); transition: var(--transition); transform: translateX(-50%);
    border-radius: 2px;
}
.nav-links > li > a:hover, .nav-links > li > a.active {
    color: var(--accent); background: rgba(212,175,55,0.08);
}
.nav-links > li > a:hover::after, .nav-links > li > a.active::after {
    width: 60%;
}
.nav-links > li > a.active {
    font-weight: 600;
}

/* 下拉菜单 */
.nav-dropdown { position: relative; }
.nav-dropdown > a .dropdown-arrow {
    font-size: 0.65rem; transition: var(--transition); margin-left: 2px;
}
.nav-dropdown:hover > a .dropdown-arrow {
    transform: rotate(180deg);
}
.nav-dropdown-menu {
    position: absolute; top: calc(100% + 0.75rem); left: 50%;
    transform: translateX(-50%) translateY(-10px);
    background: white; min-width: 220px; border-radius: var(--radius);
    box-shadow: 0 20px 40px rgba(0,0,0,0.12); border: 1px solid var(--border);
    opacity: 0; visibility: hidden;
    transition: var(--transition); padding: 0.6rem; z-index: 1001;
    list-style: none;
}
.nav-dropdown-menu::before {
    content: ''; position: absolute; top: -6px; left: 50%; transform: translateX(-50%) rotate(45deg);
    width: 12px; height: 12px; background: white; border-left: 1px solid var(--border);
    border-top: 1px solid var(--border);
}
.nav-dropdown:hover > .nav-dropdown-menu {
    opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0);
}
.nav-dropdown-menu li { margin: 0; }
.nav-dropdown-menu a {
    display: block; padding: 0.65rem 1rem; font-size: 0.88rem;
    border-radius: 0.5rem; color: var(--text-light);
    text-decoration: none; transition: var(--transition); position: relative;
}
.nav-dropdown-menu a:hover { 
    background: linear-gradient(135deg, rgba(212,175,55,0.08), rgba(212,175,55,0.04)); 
    color: var(--accent-dark); padding-left: 1.25rem;
}
.nav-dropdown-menu a::before {
    content: ''; position: absolute; left: 0.5rem; top: 50%; transform: translateY(-50%);
    width: 4px; height: 4px; border-radius: 50%; background: var(--accent);
    opacity: 0; transition: var(--transition);
}
.nav-dropdown-menu a:hover::before { opacity: 1; }

/* 联系按钮 */
.contact-btn {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: var(--primary-dark) !important; font-weight: 700 !important;
    box-shadow: 0 4px 14px rgba(212,175,55,0.35);
    margin-left: 0.5rem;
}
.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(212,175,55,0.45);
}
.contact-btn::after { display: none !important; }

/* 移动端菜单按钮 */
.mobile-toggle {
    display: none; background: none; border: none; font-size: 1.5rem;
    color: var(--primary); cursor: pointer; width: 44px; height: 44px;
    border-radius: 0.75rem; align-items: center; justify-content: center;
    transition: var(--transition);
}
.mobile-toggle:hover { background: var(--bg); }

@media (max-width: 1024px) {
    .mobile-toggle { display: flex; }
    .nav-links {
        display: none; position: absolute; top: 80px; left: 0; width: 100%;
        background: white; flex-direction: column; padding: 1.5rem;
        box-shadow: 0 20px 40px rgba(0,0,0,0.12); gap: 0.5rem;
        max-height: calc(100vh - 80px); overflow-y: auto;
    }
    .nav-links.show { display: flex; }
    .nav-links > li > a { padding: 0.75rem 1rem; width: 100%; justify-content: space-between; }
    .nav-links > li > a::after { display: none; }
    .nav-dropdown-menu {
        position: static; opacity: 1; visibility: visible; transform: none;
        box-shadow: none; border: none; padding-left: 1rem; margin-top: 0.5rem;
        display: none; background: var(--bg); border-radius: 0.75rem;
    }
    .nav-dropdown-menu::before { display: none; }
    .nav-dropdown.show > .nav-dropdown-menu { display: block; }
    .contact-btn { margin-left: 0; margin-top: 0.5rem; justify-content: center !important; }
    .logo-main-text { font-size: 1.2rem; }
}

/* ===== 英雄区 ===== */
.hero {
    position: relative; padding: 6rem 0 5rem;
    background: linear-gradient(135deg, #0a1628 0%, #1e3a5f 50%, #0a1628 100%);
    overflow: hidden; color: white;
}
.hero::before {
    content: ''; position: absolute; inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23d4af37' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.6;
}
.hero::after {
    content: ''; position: absolute; top: -50%; right: -20%;
    width: 800px; height: 800px;
    background: radial-gradient(circle, rgba(212,175,55,0.12) 0%, transparent 70%);
    pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 4rem; align-items: center; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: rgba(212,175,55,0.15); border: 1px solid rgba(212,175,55,0.3);
    color: var(--accent-light); padding: 0.4rem 1rem; border-radius: 2rem;
    font-size: 0.85rem; margin-bottom: 1.5rem; backdrop-filter: blur(10px);
}
.hero h1 {
    font-size: 3.5rem; font-weight: 900; line-height: 1.15;
    margin-bottom: 1.5rem; letter-spacing: -1px;
}
.hero h1 .gradient-text {
    background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-desc {
    font-size: 1.15rem; color: rgba(255,255,255,0.75);
    margin-bottom: 2.5rem; max-width: 540px; line-height: 1.8;
}
.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 3rem; }
.btn-gold {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: var(--primary-dark); padding: 0.9rem 2rem; border-radius: 2rem;
    font-weight: 700; text-decoration: none; transition: var(--transition);
    border: none; cursor: pointer; font-size: 1rem;
    box-shadow: 0 8px 24px rgba(212,175,55,0.35);
}
.btn-gold:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(212,175,55,0.45); }
.btn-outline-light {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: transparent; color: white; padding: 0.9rem 2rem;
    border-radius: 2rem; font-weight: 600; text-decoration: none;
    transition: var(--transition); border: 1px solid rgba(255,255,255,0.25);
}
.btn-outline-light:hover { background: rgba(255,255,255,0.1); border-color: white; }
.hero-stats {
    display: flex; gap: 3rem; padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.hero-stat-num {
    font-size: 2.5rem; font-weight: 800; color: var(--accent);
    line-height: 1; display: block;
}
.hero-stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-top: 0.5rem; }
.hero-visual {
    position: relative; border-radius: var(--radius-lg);
    overflow: hidden; box-shadow: 0 32px 64px -12px rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.1);
}
.hero-visual img { width: 100%; height: auto; display: block; }
.hero-visual::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(10,22,40,0.6), transparent 60%);
}

@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero h1 { font-size: 2.25rem; }
    .hero-desc { margin: 0 auto 2rem; }
    .hero-cta { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero-visual { max-width: 500px; margin: 0 auto; }
}

/* ===== 信任栏 ===== */
.trust-bar {
    background: white; padding: 2rem 0; border-bottom: 1px solid var(--border);
}
.trust-grid {
    display: flex; justify-content: space-around; align-items: center;
    flex-wrap: wrap; gap: 2rem;
}
.trust-item { text-align: center; }
.trust-num {
    font-size: 1.75rem; font-weight: 800; color: var(--primary);
    line-height: 1;
}
.trust-label { font-size: 0.8rem; color: var(--text-light); margin-top: 0.25rem; }

/* ===== 章节标题 ===== */
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-tag {
    display: inline-block; background: rgba(212,175,55,0.1);
    color: var(--accent-dark); padding: 0.35rem 1rem; border-radius: 2rem;
    font-size: 0.8rem; font-weight: 600; margin-bottom: 1rem;
}
.section-title {
    font-size: 2.25rem; font-weight: 800; color: var(--primary);
    margin-bottom: 1rem; letter-spacing: -0.5px;
}
.section-desc { color: var(--text-light); font-size: 1.05rem; max-width: 600px; margin: 0 auto; }

/* ===== 业务卡片 ===== */
.biz-section { padding: 5rem 0; }
.biz-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem;
}
.biz-card {
    background: var(--bg-card); border-radius: var(--radius-lg);
    padding: 2.5rem 2rem; border: 1px solid var(--border);
    transition: var(--transition); position: relative; overflow: hidden;
}
.biz-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--accent-dark));
    transform: scaleX(0); transform-origin: left; transition: var(--transition);
}
.biz-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-xl); border-color: transparent; }
.biz-card:hover::before { transform: scaleX(1); }
.biz-icon {
    width: 64px; height: 64px; border-radius: 1rem;
    background: linear-gradient(135deg, rgba(212,175,55,0.15), rgba(212,175,55,0.05));
    display: flex; align-items: center; justify-content: center;
    font-size: 1.75rem; color: var(--accent-dark); margin-bottom: 1.5rem;
}
.biz-card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 0.75rem; color: var(--primary); }
.biz-card p { color: var(--text-light); font-size: 0.95rem; margin-bottom: 1.5rem; }
.biz-link {
    display: inline-flex; align-items: center; gap: 0.5rem;
    color: var(--accent-dark); font-weight: 600; font-size: 0.9rem;
    text-decoration: none; transition: var(--transition);
}
.biz-link:hover { gap: 0.75rem; color: var(--accent); }

@media (max-width: 768px) {
    .biz-grid { grid-template-columns: 1fr; }
}

/* ===== 展会卡片 ===== */
.expo-section { background: linear-gradient(to bottom, var(--bg), white); padding: 5rem 0; }
.card-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}
.card {
    background: var(--bg-card); border-radius: var(--radius-lg);
    overflow: hidden; border: 1px solid var(--border);
    transition: var(--transition); display: flex; flex-direction: column;
}
.card:hover {
    transform: translateY(-6px); box-shadow: var(--shadow-xl);
    border-color: rgba(212,175,55,0.3);
}
.card-img-wrap { overflow: hidden; position: relative; height: 220px; }
.card-img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.6s ease;
}
.card:hover .card-img { transform: scale(1.08); }
.card-badge {
    position: absolute; top: 1rem; left: 1rem;
    background: rgba(10,22,40,0.8); color: white;
    padding: 0.25rem 0.75rem; border-radius: 2rem;
    font-size: 0.75rem; font-weight: 600; backdrop-filter: blur(10px);
}
.card-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.card-meta {
    display: flex; gap: 1rem; font-size: 0.8rem; color: var(--text-light);
    margin-bottom: 0.75rem;
}
.card-title { font-size: 1.15rem; font-weight: 700; color: var(--primary); margin-bottom: 0.5rem; line-height: 1.4; }
.card-text { color: var(--text-light); font-size: 0.9rem; margin-bottom: 1.25rem; flex: 1; }
.card-footer { display: flex; justify-content: space-between; align-items: center; margin-top: auto; }
.card-price { font-weight: 700; color: var(--accent-dark); font-size: 0.95rem; }
.btn-sm {
    display: inline-flex; align-items: center; gap: 0.4rem;
    background: var(--primary); color: white; padding: 0.5rem 1.25rem;
    border-radius: 2rem; font-size: 0.85rem; font-weight: 600;
    text-decoration: none; transition: var(--transition); border: none; cursor: pointer;
}
.btn-sm:hover { background: var(--accent); color: var(--primary-dark); }

/* ===== 案例区 ===== */
.case-section { padding: 5rem 0; background: white; }
.case-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem;
}
.case-grid-large {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
}
.case-card {
    position: relative; border-radius: var(--radius-lg); overflow: hidden;
    height: 400px; cursor: pointer;
}
.case-card img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.6s ease;
}
.case-card:hover img { transform: scale(1.1); }
.case-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(10,22,40,0.95) 0%, rgba(10,22,40,0.4) 50%, transparent 100%);
    display: flex; flex-direction: column; justify-content: flex-end;
    padding: 2rem; transition: var(--transition);
}
.case-card:hover .case-overlay { background: linear-gradient(to top, rgba(10,22,40,0.98) 0%, rgba(10,22,40,0.6) 60%, transparent 100%); }
.case-tag {
    display: inline-block; background: var(--accent); color: var(--primary-dark);
    padding: 0.2rem 0.75rem; border-radius: 2rem; font-size: 0.75rem;
    font-weight: 700; margin-bottom: 0.75rem; width: fit-content;
}
.case-title { color: white; font-size: 1.25rem; font-weight: 700; margin-bottom: 0.5rem; }
.case-desc { color: rgba(255,255,255,0.7); font-size: 0.9rem; margin-bottom: 1rem; }
.case-stats { color: var(--accent); font-weight: 700; font-size: 0.9rem; }
.case-link {
    display: inline-flex; align-items: center; gap: 0.5rem;
    color: white; text-decoration: none; font-weight: 600;
    margin-top: 1rem; opacity: 0; transform: translateY(10px);
    transition: var(--transition);
}
.case-card:hover .case-link { opacity: 1; transform: translateY(0); }

@media (max-width: 1024px) {
    .case-grid { grid-template-columns: repeat(2, 1fr); }
    .case-grid-large { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .case-grid { grid-template-columns: 1fr; }
    .case-grid-large { grid-template-columns: 1fr; }
    .case-card { height: 320px; }
}

/* ===== 评价区 ===== */
.testi-section { padding: 5rem 0; background: var(--bg); }
.testi-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem;
}
.testi-card {
    background: white; border-radius: var(--radius-lg); padding: 2rem;
    border: 1px solid var(--border); position: relative;
}
.testi-card::before {
    content: '"'; position: absolute; top: 1.5rem; right: 2rem;
    font-size: 4rem; color: var(--accent); opacity: 0.2; line-height: 1;
    font-family: Georgia, serif;
}
.testi-text { color: var(--text-light); font-size: 0.95rem; margin-bottom: 1.5rem; line-height: 1.8; font-style: italic; }
.testi-author { display: flex; align-items: center; gap: 1rem; }
.testi-avatar {
    width: 48px; height: 48px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    display: flex; align-items: center; justify-content: center;
    color: white; font-weight: 700; font-size: 1.1rem;
}
.testi-name { font-weight: 700; color: var(--primary); font-size: 0.95rem; }
.testi-role { font-size: 0.8rem; color: var(--text-light); }

@media (max-width: 768px) { .testi-grid { grid-template-columns: 1fr; } }

/* ===== SEO服务导航 ===== */
.seo-nav-section { background: white; padding: 5rem 0; border-top: 1px solid var(--border); }
.seo-nav-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem;
}
.seo-nav-card {
    background: var(--bg); border-radius: var(--radius-lg); padding: 2rem;
    border: 1px solid var(--border); transition: var(--transition);
}
.seo-nav-card:hover {
    transform: translateY(-4px); box-shadow: var(--shadow-lg);
    border-color: rgba(212,175,55,0.3);
}
.seo-nav-icon {
    width: 56px; height: 56px; border-radius: 1rem;
    background: linear-gradient(135deg, rgba(212,175,55,0.15), rgba(212,175,55,0.05));
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; color: var(--accent-dark); margin-bottom: 1.25rem;
}
.seo-nav-card h3 { font-size: 1.15rem; font-weight: 700; color: var(--primary); margin-bottom: 1rem; }
.seo-nav-links { list-style: none; }
.seo-nav-links li { margin-bottom: 0.6rem; }
.seo-nav-links a {
    color: var(--text-light); text-decoration: none; font-size: 0.9rem;
    display: flex; align-items: center; gap: 0.5rem; transition: var(--transition);
}
.seo-nav-links a:hover { color: var(--accent); padding-left: 0.25rem; }
.seo-nav-links a::before {
    content: '→'; color: var(--accent); font-size: 0.8rem; opacity: 0; transition: var(--transition);
}
.seo-nav-links a:hover::before { opacity: 1; }

@media (max-width: 768px) {
    .seo-nav-grid { grid-template-columns: 1fr; }
}

/* ===== 联系CTA ===== */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    padding: 5rem 0; color: white; position: relative; overflow: hidden;
}
.cta-section::before {
    content: ''; position: absolute; top: -50%; right: -10%;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(212,175,55,0.1) 0%, transparent 70%);
}
.cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; position: relative; z-index: 2; }
.cta-title { font-size: 2.5rem; font-weight: 800; margin-bottom: 1rem; }
.cta-desc { color: rgba(255,255,255,0.75); font-size: 1.1rem; margin-bottom: 2rem; }
.cta-hotline {
    font-size: 3rem; font-weight: 900; color: var(--accent);
    line-height: 1; margin-bottom: 0.5rem;
}
.cta-info { color: rgba(255,255,255,0.7); margin-bottom: 2rem; }
.cta-info p { margin-bottom: 0.5rem; display: flex; align-items: center; gap: 0.75rem; }
.form-card {
    background: rgba(255,255,255,0.05); backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius-lg);
    padding: 2.5rem;
}
.form-group { margin-bottom: 1.25rem; }
.form-control {
    width: 100%; padding: 0.85rem 1rem; border-radius: 0.75rem;
    border: 1px solid rgba(255,255,255,0.15); background: rgba(255,255,255,0.05);
    color: white; font-size: 0.95rem; transition: var(--transition);
}
.form-control::placeholder { color: rgba(255,255,255,0.4); }
.form-control:focus {
    outline: none; border-color: var(--accent);
    background: rgba(255,255,255,0.08);
}
.btn-submit {
    width: 100%; padding: 0.9rem; border-radius: 0.75rem;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: var(--primary-dark); font-weight: 700; font-size: 1rem;
    border: none; cursor: pointer; transition: var(--transition);
}
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212,175,55,0.35); }

@media (max-width: 768px) {
    .cta-grid { grid-template-columns: 1fr; text-align: center; }
    .cta-title { font-size: 1.75rem; }
    .cta-hotline { font-size: 2.25rem; }
    .cta-info p { justify-content: center; }
}

/* ===== 页脚 ===== */
.footer {
    background: var(--primary-dark); color: #94a3b8; padding: 4rem 0 2rem;
}
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 3rem;
}
.footer-brand { margin-bottom: 1.5rem; }
.footer-brand .logo-main { font-size: 1.5rem; margin-bottom: 0.5rem; display: inline-block; }
.footer-desc { font-size: 0.9rem; line-height: 1.8; margin-bottom: 1.5rem; max-width: 300px; }
.footer-title { color: white; font-weight: 700; margin-bottom: 1.25rem; font-size: 1rem; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 0.6rem; }
.footer-links a {
    color: #94a3b8; text-decoration: none; font-size: 0.9rem;
    transition: var(--transition); display: flex; align-items: center; gap: 0.5rem;
}
.footer-links a:hover { color: var(--accent); padding-left: 0.25rem; }
.footer-contact p { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; font-size: 0.9rem; }
.footer-bottom {
    margin-top: 3rem; padding-top: 2rem; border-top: 1px solid rgba(255,255,255,0.08);
    text-align: center; font-size: 0.85rem;
}

@media (max-width: 768px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}
@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr; }
}

/* ===== 返回顶部 ===== */
.back-to-top {
    position: fixed; bottom: 2rem; right: 2rem; width: 48px; height: 48px;
    border-radius: 50%; background: var(--accent); color: var(--primary-dark);
    border: none; cursor: pointer; display: flex; align-items: center;
    justify-content: center; font-size: 1.1rem; opacity: 0; visibility: hidden;
    transition: var(--transition); z-index: 999; box-shadow: var(--shadow-lg);
}
.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--accent-dark); transform: translateY(-3px); }

/* ===== 面包屑 ===== */
.breadcrumb {
    display: flex; align-items: center; gap: 0.5rem; font-size: 0.85rem;
    color: var(--text-light); margin-bottom: 1rem; flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-light); text-decoration: none; transition: var(--transition); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb-sep { color: var(--border); }

/* ===== 文章样式 ===== */
.article-section { padding: 3rem 0 5rem; }
.article-container { display: grid; grid-template-columns: 1fr 340px; gap: 3rem; }
.article-main { min-width: 0; }
.article-sidebar { position: sticky; top: 100px; height: fit-content; }
.sidebar-card {
    background: white; border-radius: var(--radius-lg); padding: 1.5rem;
    border: 1px solid var(--border); margin-bottom: 1.5rem;
}
.sidebar-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 1rem; color: var(--primary); }
.sidebar-list { list-style: none; }
.sidebar-list li { margin-bottom: 0.75rem; }
.sidebar-list a {
    color: var(--text-light); text-decoration: none; font-size: 0.9rem;
    display: flex; align-items: center; gap: 0.5rem; transition: var(--transition);
}
.sidebar-list a:hover { color: var(--accent); padding-left: 0.25rem; }
.sidebar-contact p { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.75rem; font-size: 0.9rem; color: var(--text-light); }
.sidebar-contact strong { color: var(--primary); }

.expo-article h2, .blog-content h2 {
    font-size: 1.5rem; font-weight: 700; color: var(--primary);
    margin: 2.5rem 0 1rem; padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border); position: relative;
}
.expo-article h2::after, .blog-content h2::after {
    content: ''; position: absolute; bottom: -2px; left: 0; width: 60px; height: 2px;
    background: var(--accent);
}
.expo-article p, .blog-content p { margin-bottom: 1.25rem; color: var(--text-light); line-height: 1.9; }
.expo-article ul, .blog-content ul { margin-bottom: 1.5rem; padding-left: 1.5rem; }
.expo-article li, .blog-content li { margin-bottom: 0.75rem; color: var(--text-light); line-height: 1.8; }
.text-accent { color: var(--accent-dark); font-weight: 600; }
.highlight {
    background: linear-gradient(120deg, rgba(212,175,55,0.15) 0%, rgba(212,175,55,0.05) 100%);
    padding: 0.15rem 0.4rem; border-radius: 0.25rem; font-weight: 600;
}
.underline { text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 4px; }
.hotline-inline { color: var(--accent-dark); font-size: 1.1rem; font-weight: 700; }
.feature-list { list-style: none; padding-left: 0 !important; }
.feature-list li {
    padding: 1rem 1.25rem; background: var(--bg); border-radius: 0.75rem;
    margin-bottom: 0.75rem !important; border-left: 3px solid var(--accent);
}

@media (max-width: 1024px) {
    .article-container { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
}

/* ===== 博客列表 ===== */
.blog-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}
.blog-card { background: white; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); transition: var(--transition); }
.blog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.blog-img { height: 200px; overflow: hidden; }
.blog-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.blog-card:hover .blog-img img { transform: scale(1.05); }
.blog-body { padding: 1.5rem; }
.blog-meta { display: flex; gap: 1rem; font-size: 0.8rem; color: var(--text-light); margin-bottom: 0.75rem; }
.blog-meta span { display: flex; align-items: center; gap: 0.35rem; }
.blog-title { font-size: 1.1rem; font-weight: 700; color: var(--primary); margin-bottom: 0.75rem; line-height: 1.5; text-decoration: none; display: block; transition: var(--transition); }
.blog-title:hover { color: var(--accent-dark); }
.blog-excerpt { color: var(--text-light); font-size: 0.9rem; line-height: 1.7; margin-bottom: 1rem; }
.blog-read { color: var(--accent-dark); font-weight: 600; font-size: 0.9rem; text-decoration: none; display: inline-flex; align-items: center; gap: 0.4rem; }

/* ===== 分页 ===== */
.page-nav { 
    display: flex; 
    justify-content: center; 
    gap: 0.5rem; 
    margin-top: 3rem; 
    flex-wrap: wrap;
}
.page-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 0.75rem;
    border-radius: 0.5rem; 
    border: 1px solid var(--border);
    color: var(--text); 
    text-decoration: none; 
    font-size: 0.9rem; 
    font-weight: 500;
    transition: var(--transition);
    background: white;
}
.page-num:hover, .page-num.active { 
    background: var(--primary); 
    color: white; 
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* ===== FAQ ===== */
.faq-item { background: white; border-radius: var(--radius); border: 1px solid var(--border); margin-bottom: 1rem; overflow: hidden; }
.faq-question {
    padding: 1.25rem; font-weight: 600; cursor: pointer; display: flex;
    justify-content: space-between; align-items: center; color: var(--primary);
    transition: var(--transition);
}
.faq-question:hover { background: var(--bg); }
.faq-answer { padding: 0 1.25rem 1.25rem; color: var(--text-light); line-height: 1.8; display: none; }
.faq-answer.show { display: block; }
.faq-icon { transition: var(--transition); color: var(--accent); }

/* ===== 城市页 ===== */
.city-hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    padding: 5rem 0; color: white; text-align: center;
}
.city-hero h1 { font-size: 2.5rem; font-weight: 800; margin-bottom: 1rem; }
.city-hero p { color: rgba(255,255,255,0.75); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

/* ===== 核心词SEO专区 ===== */
.seo-content-section {
    background: linear-gradient(to bottom, white, var(--bg));
    padding: 4rem 0;
}
.seo-content-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}
.seo-content-box h2 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 1.5rem;
}
.seo-content-box p {
    color: var(--text-light);
    line-height: 1.9;
    margin-bottom: 1rem;
}
.seo-keyword-tag {
    display: inline-block;
    background: rgba(212,175,55,0.1);
    color: var(--accent-dark);
    padding: 0.25rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.85rem;
    margin: 0.25rem;
    font-weight: 500;
}

/* ===== 子页面通用样式 ===== */
.page-hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    padding: 5rem 0 3rem; color: white; margin-top: 0;
}
.page-hero h1 { font-size: 2.5rem; font-weight: 800; margin-bottom: 1rem; }
.page-hero p { color: rgba(255,255,255,0.75); font-size: 1.1rem; max-width: 700px; }

/* ===== 荣誉资质页 ===== */
.honor-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem;
}
.honor-card {
    background: white; border-radius: var(--radius-lg); padding: 2rem;
    border: 1px solid var(--border); text-align: center; transition: var(--transition);
}
.honor-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); border-color: rgba(212,175,55,0.3); }
.honor-icon {
    width: 80px; height: 80px; border-radius: 50%;
    background: linear-gradient(135deg, rgba(212,175,55,0.15), rgba(212,175,55,0.05));
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem; color: var(--accent-dark); margin: 0 auto 1.5rem;
}
.honor-card h3 { font-size: 1.15rem; font-weight: 700; color: var(--primary); margin-bottom: 0.75rem; }
.honor-card p { color: var(--text-light); font-size: 0.9rem; line-height: 1.7; }

/* ===== 团队风采页 ===== */
.team-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem;
}
.team-card {
    background: white; border-radius: var(--radius-lg); overflow: hidden;
    border: 1px solid var(--border); transition: var(--transition);
}
.team-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); }
.team-img {
    height: 280px; background: linear-gradient(135deg, var(--primary-light), var(--primary));
    display: flex; align-items: center; justify-content: center;
    color: white; font-size: 3rem; font-weight: 700;
}
.team-body { padding: 1.5rem; }
.team-name { font-size: 1.15rem; font-weight: 700; color: var(--primary); margin-bottom: 0.25rem; }
.team-role { color: var(--accent-dark); font-size: 0.85rem; font-weight: 600; margin-bottom: 0.75rem; }
.team-desc { color: var(--text-light); font-size: 0.9rem; line-height: 1.7; }

/* ===== 合作伙伴页 ===== */
.partner-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
}
.partner-card {
    background: white; border-radius: var(--radius); padding: 1.5rem;
    border: 1px solid var(--border); text-align: center; transition: var(--transition);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    min-height: 140px;
}
.partner-card:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.partner-card img { max-width: 100%; height: auto; max-height: 60px; object-fit: contain; }
.partner-name { font-weight: 600; color: var(--primary); margin-top: 0.75rem; font-size: 0.9rem; }

/* ===== 服务流程时间轴 ===== */
.timeline {
    position: relative; padding-left: 2rem;
}
.timeline::before {
    content: ''; position: absolute; left: 0; top: 0; bottom: 0;
    width: 2px; background: linear-gradient(to bottom, var(--accent), var(--accent-dark));
}
.timeline-item {
    position: relative; padding-bottom: 2rem;
}
.timeline-item::before {
    content: ''; position: absolute; left: -2rem; top: 0.25rem;
    width: 12px; height: 12px; border-radius: 50%; background: var(--accent);
    margin-left: -5px;
}
.timeline-title { font-weight: 700; color: var(--primary); margin-bottom: 0.5rem; }
.timeline-desc { color: var(--text-light); font-size: 0.95rem; line-height: 1.7; }

/* ===== 微信二维码 ===== */
.wechat-qr {
    text-align: center; padding: 2rem;
    background: linear-gradient(135deg, rgba(212,175,55,0.05), rgba(212,175,55,0.1));
    border-radius: var(--radius-lg); border: 1px solid rgba(212,175,55,0.2);
}
.wechat-qr img {
    max-width: 200px; border-radius: 0.5rem;
    box-shadow: var(--shadow); margin-bottom: 1rem;
}
.wechat-qr p { color: var(--text-light); font-size: 0.9rem; margin-bottom: 0.5rem; }
.wechat-qr .wechat-id { color: var(--accent-dark); font-weight: 700; font-size: 1.1rem; }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    body { padding-top: 80px; }
    .section-title { font-size: 1.75rem; }
    .trust-grid { gap: 1.5rem; }
    .trust-num { font-size: 1.5rem; }
    .page-nav { gap: 0.35rem; }
    .page-num { min-width: 40px; height: 40px; font-size: 0.85rem; }
    .honor-grid { grid-template-columns: 1fr; }
    .team-grid { grid-template-columns: repeat(2, 1fr); }
    .partner-grid { grid-template-columns: repeat(2, 1fr); }
    .page-hero h1 { font-size: 2rem; }
}
@media (max-width: 480px) {
    .team-grid { grid-template-columns: 1fr; }
    .partner-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 1.85rem; }
}