@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@300;400;500;600;700&family=Poppins:wght@400;500;600;700&display=swap');

/* ==========================================================================
   Trust & Authority 设计系统
   - 默认亮色模式（light）
   - 可选暗色模式（body.dark-mode）
   - body.light-mode 类作为默认模式的兼容标记
   ========================================================================== */

:root {
    /* 主色 - 专业蓝 */
    --primary: #1E40AF;
    --primary-light: #3B82F6;
    --primary-dark: #1E3A8A;

    /* CTA - 橙色 */
    --cta: #F97316;
    --cta-hover: #EA580C;

    /* 背景色 */
    --bg: #EFF6FF;
    --bg-white: #FFFFFF;

    /* 文字色 */
    --text: #1E3A8A;
    --text-body: #334155;
    --text-muted: #64748B;

    /* 边框色 */
    --border: #E2E8F0;

    /* 状态色 */
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;

    /* 渐变（克制使用） */
    --gradient: linear-gradient(135deg, var(--primary), var(--primary-light));
    --gradient-soft: linear-gradient(135deg, rgba(30, 64, 175, 0.08), rgba(59, 130, 246, 0.08));

    /* 阴影（卡片） */
    --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-card-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-header: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);

    /* 兼容旧变量名（部分 PHP 内联或子样式可能引用） */
    --secondary: var(--cta);
    --light: var(--text);
    --gray: var(--text-muted);
    --card-bg: var(--bg-white);
    --glow: var(--shadow-card-hover);
    --light-bg: var(--bg);
    --light-text: var(--text-body);
    --light-card: var(--bg-white);
    --light-card-border: var(--border);
    --light-gray: var(--text-muted);
    --dark: var(--text);
    --darker: var(--text);
}

/* 暗色模式变量覆盖 */
body.dark-mode {
    --bg: #0F172A;
    --bg-white: #1E293B;
    --text: #F8FAFC;
    --text-body: #CBD5E1;
    --text-muted: #94A3B8;
    --border: #334155;
    --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --shadow-card-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --shadow-header: 0 1px 3px rgba(0, 0, 0, 0.5);
    --gradient-soft: linear-gradient(135deg, rgba(59, 130, 246, 0.12), rgba(30, 64, 175, 0.12));
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text-body);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    font-weight: 400;
}

/* body.light-mode 作为默认模式的兼容类（无视觉差异） */
body.light-mode {
    background: var(--bg);
    color: var(--text-body);
}

/* 暗色模式（可选） */
body.dark-mode {
    background: var(--bg);
    color: var(--text-body);
}

/* ==========================================================================
   背景装饰元素 - 移除科技感视觉效果（保留类名，header.php 中存在）
   ========================================================================== */
.tech-bg,
.tech-bg::before,
.floating-shapes,
.shape,
.shape1,
.shape2,
.shape3,
.grid-lines,
.dynamic-element {
    background: transparent;
    background-image: none;
    box-shadow: none;
    filter: none;
    opacity: 0;
    pointer-events: none;
}

.tech-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.tech-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
}

.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0;
    background: transparent;
}

.shape1,
.shape2,
.shape3 {
    position: absolute;
    background: transparent;
    filter: none;
}

.grid-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: none;
    z-index: 0;
}

.container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 40px;
}

/* ==========================================================================
   导航栏 - 白色背景 + 蓝色文字 + 底部阴影
   ========================================================================== */
.site-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 9997;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-header);
    transition: all 0.25s ease;
}

body.dark-mode .site-header {
    background: rgba(30, 41, 59, 0.95);
    border-bottom: 1px solid var(--border);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    flex-wrap: nowrap;
    gap: 20px;
    min-height: 70px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--primary);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
    font-size: 1.2rem;
    z-index: 10002;
    position: relative;
}

.nav-toggle:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(30, 64, 175, 0.25);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    font-family: 'Poppins', sans-serif;
    letter-spacing: -0.3px;
    flex-shrink: 0;
    min-width: 0;
}

.logo a {
    color: var(--primary-dark);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    color: var(--primary);
    font-size: 1.7rem;
}

.logo span {
    color: var(--primary);
    background: none;
    -webkit-text-fill-color: var(--primary);
}

.main-nav {
    display: flex;
    list-style: none;
    gap: 28px;
    align-items: center;
    flex-wrap: nowrap;
    flex-shrink: 1;
    min-width: 0;
}

.main-nav a,
.main-nav .nav-link {
    color: var(--text-body);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.2s ease;
    position: relative;
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    flex-shrink: 0;
}

.main-nav a i,
.main-nav .nav-link i {
    font-size: 0.9rem;
    opacity: 0.8;
    transition: all 0.2s ease;
}

.main-nav a:hover i,
.main-nav a.active i,
.main-nav .nav-link:hover i,
.main-nav .nav-link.active i {
    opacity: 1;
    color: var(--primary);
}

.main-nav a:hover,
.main-nav a.active,
.main-nav .nav-link:hover,
.main-nav .nav-link.active {
    color: var(--primary);
}

.main-nav a::after,
.main-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 2px;
}

.main-nav a:hover::after,
.main-nav a.active::after,
.main-nav .nav-link:hover::after,
.main-nav .nav-link.active::after {
    width: 100%;
}

/* 通知按钮 */
.notification-btn {
    position: relative;
    width: 44px;
    height: 44px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
    font-size: 1.15rem;
}

.notification-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(30, 64, 175, 0.25);
}

.notification-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    min-width: 20px;
    height: 20px;
    background: var(--cta);
    color: #fff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 0 6px;
    box-shadow: 0 2px 6px rgba(249, 115, 22, 0.4);
    animation: pulse 2s infinite;
    border: 2px solid #fff;
}

body.dark-mode .notification-badge {
    border-color: var(--bg-white);
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.08);
    }
}

/* ==========================================================================
   公告弹窗 - 白色 + 蓝色强调
   ========================================================================== */
.announcements-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
}

.announcements-modal.show {
    display: block;
}

.announcements-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    animation: fadeIn 0.25s ease;
}

.announcements-modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: slideUp 0.3s ease;
    border: 1px solid var(--border);
}

.announcements-modal-header {
    padding: 20px 25px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--primary);
}

.announcements-modal-header h3 {
    color: #fff;
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
    font-family: 'Poppins', sans-serif;
}

.announcements-modal-close {
    width: 34px;
    height: 34px;
    background: rgba(255, 255, 255, 0.18);
    border: none;
    border-radius: 8px;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-size: 1rem;
}

.announcements-modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

.announcements-modal-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
}

.announcement-list-item {
    padding: 16px;
    margin-bottom: 12px;
    background: var(--bg);
    border-radius: 10px;
    border-left: 4px solid var(--primary);
    cursor: pointer;
    transition: all 0.25s ease;
    position: relative;
}

.announcement-list-item:hover {
    background: #DBEAFE;
    transform: translateX(4px);
    box-shadow: var(--shadow-card);
}

.announcement-list-item.unread {
    border-left-color: var(--cta);
    background: #FFEDD5;
}

.announcement-list-item.unread:hover {
    background: #FED7AA;
}

.announcement-list-item.unread::before {
    content: '';
    position: absolute;
    top: 16px;
    right: 16px;
    width: 8px;
    height: 8px;
    background: var(--cta);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.announcement-list-item-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 6px;
    font-family: 'Poppins', sans-serif;
}

.announcement-list-item-preview {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.announcement-list-item-time {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 8px;
    opacity: 0.85;
}

.announcement-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.announcement-empty i {
    font-size: 2.8rem;
    margin-bottom: 15px;
    opacity: 0.4;
    color: var(--primary);
}

/* 公告详情弹窗 */
.announcement-detail-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10001;
}

.announcement-detail-modal.show {
    display: block;
}

.announcement-detail-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    animation: fadeIn 0.25s ease;
}

.announcement-detail-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 700px;
    max-height: 85vh;
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: slideUp 0.3s ease;
    border: 1px solid var(--border);
}

.announcement-detail-header {
    padding: 20px 25px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--primary);
}

.announcement-detail-header h3 {
    color: #fff;
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    font-family: 'Poppins', sans-serif;
    flex: 1;
    padding-right: 20px;
    line-height: 1.4;
}

.announcement-detail-close {
    width: 34px;
    height: 34px;
    background: rgba(255, 255, 255, 0.18);
    border: none;
    border-radius: 8px;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-size: 1rem;
    flex-shrink: 0;
}

.announcement-detail-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

.announcement-detail-body {
    padding: 25px;
    overflow-y: auto;
    flex: 1;
    color: var(--text-body);
    line-height: 1.8;
}

.announcement-detail-body p {
    margin-bottom: 15px;
    font-size: 1rem;
}

.announcement-detail-body p:last-child {
    margin-bottom: 0;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translate(-50%, -45%);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: inline-flex !important;
        visibility: visible !important;
        opacity: 1 !important;
    }

    .header-actions {
        gap: 10px;
    }

    .notification-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .notification-badge {
        min-width: 18px;
        height: 18px;
        font-size: 0.68rem;
        top: -3px;
        right: -3px;
    }

    .announcements-modal-content,
    .announcement-detail-content {
        width: 95%;
        max-height: 90vh;
    }

    .announcements-modal-header h3,
    .announcement-detail-header h3 {
        font-size: 1.1rem;
    }

    .announcement-list-item {
        padding: 14px;
    }

    .announcement-list-item-title {
        font-size: 1rem;
    }
}

/* ==========================================================================
   首页横幅 - 浅色背景 + 深蓝文字 + 渐变装饰
   ========================================================================== */
.hero {
    min-height: 100vh;
    padding-top: 120px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 50%, #EFF6FF 100%);
}

body.dark-mode .hero {
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at top right, rgba(59, 130, 246, 0.12), transparent 60%),
                radial-gradient(ellipse at bottom left, rgba(249, 115, 22, 0.08), transparent 60%);
    z-index: 0;
    pointer-events: none;
}

body.dark-mode .hero::after {
    background: radial-gradient(ellipse at top right, rgba(59, 130, 246, 0.15), transparent 60%),
                radial-gradient(ellipse at bottom left, rgba(249, 115, 22, 0.08), transparent 60%);
}

.hero > .container {
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-family: 'Poppins', sans-serif;
    font-size: 4rem;
    line-height: 1.15;
    margin-bottom: 25px;
    letter-spacing: -1px;
    color: var(--primary-dark);
    font-weight: 700;
}

.hero h1 span {
    color: var(--primary);
    background: none;
    -webkit-text-fill-color: var(--primary);
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-body);
    margin-bottom: 40px;
    max-width: 90%;
    font-weight: 400;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-top: 30px;
    flex-wrap: wrap;
}

/* ==========================================================================
   按钮 - 蓝色实心 + 橙色 CTA
   ========================================================================== */
.cta-btn,
.btn {
    background: var(--cta);
    color: #fff;
    padding: 14px 32px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.25s ease;
    border: none;
    font-family: 'Poppins', sans-serif;
    letter-spacing: 0;
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(249, 115, 22, 0.2);
}

.cta-btn i,
.btn i {
    font-size: 1rem;
    transition: transform 0.25s ease;
}

.cta-btn:hover i,
.btn:hover i {
    transform: translateX(3px);
}

.cta-btn::before,
.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
    transition: 0.5s;
}

.cta-btn:hover,
.btn:hover {
    background: var(--cta-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(249, 115, 22, 0.35);
}

.cta-btn:hover::before,
.btn:hover::before {
    left: 100%;
}

.outline-btn {
    background: transparent;
    color: var(--primary);
    padding: 14px 32px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.25s ease;
    border: 2px solid var(--primary);
    font-family: 'Poppins', sans-serif;
    letter-spacing: 0;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.outline-btn i {
    font-size: 1rem;
    transition: transform 0.25s ease;
}

.outline-btn:hover i {
    transform: translateX(3px);
}

.outline-btn:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(30, 64, 175, 0.25);
}

/* ==========================================================================
   内容区块
   ========================================================================== */
.section,
.team-section,
.contact-section,
#home,
#services,
#cases,
#team,
#contact {
    scroll-margin-top: 100px;
}

.section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 850px;
    margin: 0 auto 80px;
    position: relative;
}

.section-title {
    font-family: 'Poppins', sans-serif;
    font-size: 2.8rem;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
    color: var(--primary-dark);
    font-weight: 700;
    letter-spacing: -0.5px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 64px;
    height: 4px;
    background: var(--cta);
    border-radius: 4px;
}

.section-subtitle {
    color: var(--text-body);
    font-size: 1.15rem;
    line-height: 1.7;
    font-weight: 400;
}

/* ==========================================================================
   服务项目样式 - 白色卡片 + 轻阴影 + 悬停上浮
   ========================================================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 32px;
}

.service-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 40px 32px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.service-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary-light);
    box-shadow: var(--shadow-card-hover);
}

.service-icon-wrapper {
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: var(--gradient-soft);
    border-radius: 12px;
    border: 1px solid rgba(30, 64, 175, 0.15);
}

.service-card-icon {
    font-size: 2.2rem;
    color: var(--primary);
    transition: all 0.3s ease;
}

.service-card:hover .service-card-icon {
    transform: scale(1.1);
    color: var(--primary-dark);
}

.service-card h3 {
    font-size: 1.6rem;
    margin-bottom: 16px;
    font-family: 'Poppins', sans-serif;
    color: var(--primary-dark);
    font-weight: 600;
}

.service-card .brief {
    color: var(--text-body);
    margin-bottom: 24px;
    font-size: 1.05rem;
    font-weight: 400;
    line-height: 1.7;
}

.service-items {
    list-style: none;
    margin-top: 20px;
}

.service-items li {
    margin-bottom: 14px;
    position: relative;
    padding-left: 30px;
    font-weight: 400;
    font-size: 1rem;
    color: var(--text-body);
}

.service-items li::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 2px;
    color: var(--success);
    font-size: 1rem;
}

/* ==========================================================================
   案例演示样式
   ========================================================================== */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 32px;
}

.case-card {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    display: block;
    border: 1px solid var(--border);
}

.case-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--primary-light);
}

.case-cover {
    width: 100%;
    height: 280px;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.case-card:hover .case-cover {
    transform: scale(1.05);
}

.case-info {
    padding: 28px;
    min-height: 120px;
    display: flex;
    flex-direction: column;
}

.case-info h3 {
    color: var(--primary-dark);
    margin-bottom: 12px;
    font-size: 1.4rem;
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    transition: color 0.25s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    flex: 1;
}

.case-external-icon {
    font-size: 0.95rem;
    opacity: 0.55;
    transition: all 0.25s ease;
    flex-shrink: 0;
}

.case-card:hover .case-external-icon {
    opacity: 1;
    transform: translate(3px, -3px);
    color: var(--primary);
}

.case-card:hover .case-info h3 {
    color: var(--primary);
}

.case-card:hover .case-info h3 .case-external-icon {
    color: var(--primary);
}

.case-info p {
    color: var(--text-body);
    font-size: 1rem;
    line-height: 1.7;
    margin: 0;
    flex: 1;
}

/* ==========================================================================
   团队成员样式
   ========================================================================== */
.team-section {
    background: linear-gradient(to bottom, #DBEAFE, #EFF6FF);
    padding: 100px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

body.dark-mode .team-section {
    background: linear-gradient(to bottom, #1E293B, #0F172A);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.team-card {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all 0.3s ease;
    border: 1px solid var(--border);
    position: relative;
    text-align: center;
    padding: 36px 28px;
}

.team-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--primary-light);
}

.team-avatar {
    width: 130px;
    height: 130px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 20px;
    display: block;
    border: 4px solid var(--bg);
    background: var(--primary);
    padding: 4px;
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
}

.team-card:hover .team-avatar {
    transform: scale(1.05);
    box-shadow: 0 6px 14px rgba(30, 64, 175, 0.25);
}

.team-card h3 {
    color: var(--primary-dark);
    margin-bottom: 8px;
    font-size: 1.4rem;
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    position: relative;
    z-index: 1;
}

.team-position {
    color: var(--primary);
    background: none;
    -webkit-text-fill-color: var(--primary);
    font-weight: 600;
    margin-bottom: 16px;
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    position: relative;
    z-index: 1;
}

.team-skills {
    color: var(--text-body);
    font-size: 1rem;
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

.team-homepage {
    margin-top: 20px;
    position: relative;
    z-index: 1;
}

.team-homepage-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.25s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--gradient-soft);
    border-radius: 8px;
    border: 1px solid rgba(30, 64, 175, 0.2);
    font-size: 0.95rem;
}

.team-homepage-link:hover {
    transform: translateY(-2px);
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 10px rgba(30, 64, 175, 0.3);
    text-decoration: none;
}

.team-homepage-link i {
    transition: transform 0.25s ease;
}

.team-homepage-link:hover i {
    transform: translateX(3px);
}

/* ==========================================================================
   联系我们样式
   ========================================================================== */
.contact-section {
    padding: 100px 0;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 50px;
    background: var(--bg-white);
    border-radius: 12px;
    padding: 56px;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-card);
    max-width: 900px;
    margin: 0 auto;
}

.contact-info h3 {
    font-size: 2rem;
    margin-bottom: 32px;
    position: relative;
    font-family: 'Poppins', sans-serif;
    color: var(--primary-dark);
    font-weight: 700;
}

.contact-info h3::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--cta);
    border-radius: 3px;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.contact-method {
    background: var(--bg);
    border-radius: 10px;
    padding: 24px;
    text-align: center;
    transition: all 0.25s ease;
    border: 1px solid var(--border);
}

.contact-method:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
    border-color: var(--primary-light);
}

.contact-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    color: var(--primary);
}

.contact-method h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--primary-dark);
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
}

.contact-method p {
    color: var(--text-body);
    margin-bottom: 15px;
    font-size: 1rem;
    min-height: 50px;
}

.contact-method .btn {
    margin-top: 10px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
    width: 100%;
}

.contact-image-wrapper {
    width: 100%;
    height: 200px;
    margin-bottom: 20px;
    border-radius: 10px;
    overflow: hidden;
    background: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.contact-image:hover {
    transform: scale(1.04);
}

/* 图片查看器弹窗 */
.image-viewer-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10002;
}

.image-viewer-modal.show {
    display: block;
}

.image-viewer-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    animation: fadeIn 0.25s ease;
}

.image-viewer-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 90%;
    max-height: 90%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: slideUp 0.3s ease;
}

.image-viewer-content img {
    max-width: 800px;
    max-height: 600px;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.image-viewer-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 10px;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
    font-size: 1.2rem;
    z-index: 10003;
}

.image-viewer-close:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: rotate(90deg);
}

.contact-item {
    margin-bottom: 24px;
    padding: 20px;
    background: var(--bg);
    border-radius: 10px;
    border-left: 4px solid var(--primary);
    transition: all 0.25s ease;
}

.contact-item:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-card);
    border-left-color: var(--cta);
}

.contact-item strong {
    color: var(--primary-dark);
    display: block;
    margin-bottom: 8px;
    font-size: 1.05rem;
    font-weight: 700;
    font-family: 'Poppins', sans-serif;
}

.contact-item p {
    color: var(--text-body);
    font-size: 1rem;
    line-height: 1.7;
}

.contact-item a {
    color: var(--primary);
    text-decoration: none;
    transition: all 0.2s ease;
    font-weight: 500;
}

.contact-item a:hover {
    color: var(--cta);
    text-decoration: underline;
}

/* ==========================================================================
   底部样式 - 深蓝背景 + 白色文字
   ========================================================================== */
.site-footer {
    background: var(--primary-dark);
    padding: 80px 0 40px;
    border-top: 1px solid var(--border);
    position: relative;
    color: #fff;
}

body.dark-mode .site-footer {
    background: #0F172A;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-info h3 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: 'Poppins', sans-serif;
    color: #fff;
    flex-wrap: wrap;
}

.footer-info h3 i {
    color: var(--cta);
    font-size: 1.5rem;
}

.footer-info p {
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.8;
    margin-bottom: 24px;
    font-weight: 400;
}

.footer-contact h4 {
    font-size: 1.25rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
    font-family: 'Poppins', sans-serif;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.footer-contact h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--cta);
    border-radius: 2px;
}

.footer-contact p {
    margin-bottom: 12px;
    color: rgba(255, 255, 255, 0.75);
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.footer-contact p i {
    color: var(--cta);
    font-size: 1rem;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.footer-links {
    display: flex;
    flex-direction: column;
}

.footer-links h4 {
    font-size: 1.25rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
    font-family: 'Poppins', sans-serif;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.footer-links h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--cta);
    border-radius: 2px;
}

.friend-links-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.friend-link-item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    text-decoration: none;
    color: rgba(255, 255, 255, 0.8);
    transition: all 0.25s ease;
    font-size: 0.9rem;
    min-height: 40px;
}

.friend-link-item:hover {
    background: var(--cta);
    border-color: var(--cta);
    transform: translateY(-2px);
    color: #fff;
    box-shadow: 0 4px 10px rgba(249, 115, 22, 0.35);
}

.friend-link-item img {
    max-height: 30px;
    max-width: 120px;
    object-fit: contain;
    display: block;
}

.friend-link-item span {
    white-space: nowrap;
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.95rem;
}

/* ==========================================================================
   响应式设计
   ========================================================================== */
@media (max-width: 1200px) {
    .hero h1 {
        font-size: 3.5rem;
    }

    .section-title {
        font-size: 2.4rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .contact-methods {
        grid-template-columns: 1fr;
    }
}

/* 移动端侧边栏遮罩 */
.nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    z-index: 9998;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.nav-overlay.is-active {
    display: block;
    opacity: 1;
    pointer-events: auto;
}

/* PC端优化：确保导航栏不换行 */
@media (min-width: 769px) {
    .header-content {
        flex-wrap: nowrap;
    }

    .main-nav {
        flex-wrap: nowrap;
        overflow: visible;
        gap: 24px;
    }

    .main-nav a,
    .main-nav .nav-link {
        font-size: 0.92rem;
        gap: 5px;
        padding: 8px 4px;
    }

    .main-nav a i,
    .main-nav .nav-link i {
        font-size: 0.82rem;
    }

    .logo {
        font-size: 1.4rem;
        flex-shrink: 0;
    }

    .header-actions {
        flex-shrink: 0;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: row;
        flex-wrap: nowrap;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -320px;
        width: 280px;
        height: 100vh;
        background: var(--bg-white) !important;
        border-left: 1px solid var(--border);
        display: flex;
        flex-direction: column;
        gap: 0;
        padding: 80px 0 20px;
        margin: 0;
        z-index: 10001 !important;
        overflow-y: auto;
        transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: -8px 0 24px rgba(0, 0, 0, 0.15);
        will-change: right;
        pointer-events: auto !important;
        -webkit-tap-highlight-color: transparent;
    }

    body.dark-mode .main-nav {
        background: var(--bg-white) !important;
        border-left-color: var(--border);
    }

    .main-nav.is-open {
        right: 0 !important;
    }

    .main-nav a,
    .main-nav .nav-link {
        font-size: 1rem;
        padding: 16px 25px;
        border-bottom: 1px solid var(--border);
        width: 100%;
        justify-content: flex-start;
        color: var(--text-body);
        font-weight: 500;
        transition: all 0.25s ease;
        position: relative;
        pointer-events: auto !important;
        cursor: pointer;
        z-index: 10002 !important;
        -webkit-tap-highlight-color: rgba(30, 64, 175, 0.2);
        touch-action: manipulation;
    }

    .main-nav.is-open {
        pointer-events: auto !important;
    }

    .main-nav.is-open * {
        pointer-events: auto !important;
    }

    .main-nav a:hover,
    .main-nav .nav-link:hover {
        background: var(--gradient-soft);
        color: var(--primary);
        padding-left: 30px;
    }

    .main-nav a:hover::before,
    .main-nav .nav-link:hover::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        width: 4px;
        background: var(--primary);
    }

    .main-nav a i,
    .main-nav .nav-link i {
        transition: all 0.25s ease;
    }

    .main-nav a:hover i,
    .main-nav .nav-link:hover i {
        transform: scale(1.1);
        color: var(--primary);
    }

    .main-nav a::after,
    .main-nav .nav-link::after {
        display: none;
    }

    .main-nav a i,
    .main-nav .nav-link i {
        font-size: 1rem;
        margin-right: 12px;
        width: 20px;
        text-align: center;
    }

    .header-actions {
        gap: 8px;
    }

    .cta-btn {
        display: none !important;
    }

    /* 确保汉堡按钮始终显示 */
    .nav-toggle {
        display: inline-flex !important;
        visibility: visible !important;
        opacity: 1 !important;
        z-index: 10002 !important;
    }

    .hero {
        padding-top: 100px;
        text-align: center;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-buttons {
        justify-content: center;
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .cta-btn,
    .hero-buttons .outline-btn {
        width: 100%;
        justify-content: center;
    }

    .section-title {
        font-size: 2rem;
    }

    .services-grid,
    .cases-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }

    .contact-container {
        padding: 30px;
    }

    .contact-methods {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 5px;
    border: 2px solid var(--bg);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

/* 动画效果 */
@keyframes float {
    0% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
    100% { transform: translateY(0) rotate(0deg); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   Toast / 确认框（gw- 前缀，与 notifications.js 一致；避免 .toast/.show 与 Bootstrap 冲突）
   ========================================================================== */
.gw-toast-stack {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 10050;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
    max-width: calc(100vw - 32px);
    pointer-events: none;
}

/* 前台默认：视口水平居中、靠上（在导航栏下方留空） */
.gw-toast-stack--top-center {
    top: 88px;
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    align-items: center;
}

@media (max-width: 768px) {
    .gw-toast-stack--top-center {
        top: 76px;
        max-width: calc(100vw - 24px);
    }
}

.gw-toast {
    pointer-events: auto;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    min-width: 240px;
    max-width: min(420px, 92vw);
    padding: 12px 14px 12px 16px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
    border-radius: 10px;
    box-shadow: var(--shadow-card-hover);
    opacity: 0;
    transform: translateX(12px);
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.gw-toast-stack--top-center .gw-toast {
    transform: translateY(-12px);
}

.gw-toast-stack--top-center .gw-toast.is-visible {
    transform: translateY(0);
}

.gw-toast.is-visible {
    opacity: 1;
    transform: translateX(0);
}

.gw-toast__icon {
    font-size: 18px;
    line-height: 1.2;
    flex-shrink: 0;
    margin-top: 1px;
}

.gw-toast--success .gw-toast__icon {
    color: var(--success);
}

.gw-toast--success {
    border-left-color: var(--success);
}

.gw-toast--error .gw-toast__icon {
    color: var(--danger);
}

.gw-toast--error {
    border-left-color: var(--danger);
}

.gw-toast--warning .gw-toast__icon {
    color: var(--warning);
}

.gw-toast--warning {
    border-left-color: var(--warning);
}

.gw-toast--info .gw-toast__icon {
    color: var(--primary);
}

.gw-toast__msg {
    flex: 1;
    min-width: 0;
    color: var(--text-body);
    font-size: 14px;
    font-weight: 500;
    line-height: 1.45;
    word-break: break-word;
    white-space: pre-line;
}

.gw-toast__close {
    flex-shrink: 0;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px 4px;
    font-size: 14px;
    line-height: 1;
    border-radius: 4px;
    transition: color 0.15s ease, background 0.15s ease;
}

.gw-toast__close:hover {
    color: var(--text-body);
    background: var(--bg);
}

.gw-confirm-overlay {
    position: fixed;
    inset: 0;
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 10060;
    padding: 16px;
    box-sizing: border-box;
    background: rgba(15, 23, 42, 0.65);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.gw-confirm-overlay.is-visible {
    opacity: 1;
}

.gw-confirm-dialog {
    background: var(--bg-white);
    border-radius: 12px;
    max-width: 440px;
    width: 100%;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
    overflow: hidden;
    transform: scale(0.96);
    transition: transform 0.2s ease;
}

.gw-confirm-overlay.is-visible .gw-confirm-dialog {
    transform: scale(1);
}

.gw-confirm-dialog__header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 20px;
    border-bottom: 1px solid var(--border);
    background: var(--gradient-soft);
}

.gw-confirm-dialog__header i {
    font-size: 22px;
    color: var(--primary);
    flex-shrink: 0;
}

.gw-confirm-dialog__title {
    margin: 0;
    font-family: 'Poppins', sans-serif;
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.3;
    color: var(--primary-dark);
}

.gw-confirm-dialog__body {
    padding: 20px 22px;
}

.gw-confirm-dialog__body p {
    margin: 0;
    color: var(--text-body);
    font-size: 0.95rem;
    line-height: 1.55;
}

.gw-confirm-dialog__footer {
    padding: 14px 18px 18px;
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 10px;
    border-top: 1px solid var(--border);
    background: var(--bg);
}

.gw-confirm-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 22px;
    min-height: 40px;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0;
    line-height: 1.25;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-family: 'Poppins', sans-serif;
    transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.gw-confirm-btn--cancel {
    background: var(--bg-white);
    color: var(--text-body);
    border: 1px solid var(--border);
}

.gw-confirm-btn--cancel:hover {
    background: var(--bg);
    transform: translateY(-1px);
}

.gw-confirm-btn--primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(30, 64, 175, 0.25);
}

.gw-confirm-btn--primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.35);
}

/* ==========================================================================
   首页响应式设计补充
   ========================================================================== */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 24px;
    }

    .service-card {
        padding: 28px 24px;
    }

    .cases-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 24px;
    }

    .case-cover {
        height: 220px;
    }

    .team-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 24px;
    }

    .team-card {
        padding: 28px 20px;
    }

    .contact-methods {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

    .section-header {
        padding: 0 15px;
        margin-bottom: 50px;
    }

    .section-title {
        font-size: 1.7rem;
        margin-bottom: 12px;
    }

    .section-subtitle {
        font-size: 0.95rem;
    }

    /* 首页横幅响应式 */
    .hero {
        min-height: auto;
        padding: 80px 0 60px;
    }

    .hero-content {
        text-align: center;
    }

    .hero h1 {
        font-size: 2.2rem;
        line-height: 1.3;
        margin-bottom: 20px;
    }

    .hero p {
        font-size: 1rem;
        max-width: 100%;
        margin-bottom: 25px;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 12px;
    }

    .hero-buttons .cta-btn,
    .hero-buttons .outline-btn,
    .hero-buttons .btn {
        width: 100%;
        padding: 14px 20px;
        font-size: 0.95rem;
        display: inline-block;
    }

    /* 服务卡片 */
    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .service-card {
        padding: 24px;
    }

    .service-card h3 {
        font-size: 1.3rem;
        margin-bottom: 14px;
    }

    .service-icon-wrapper {
        width: 56px;
        height: 56px;
        margin-bottom: 16px;
    }

    .service-card-icon {
        font-size: 1.9rem;
    }

    .service-items {
        gap: 8px;
    }

    .service-items li {
        font-size: 0.9rem;
    }

    /* 案例卡片 */
    .cases-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .case-card {
        display: flex;
        flex-direction: column;
    }

    .case-cover {
        height: 200px;
        min-height: 200px;
    }

    .case-info {
        padding: 20px;
        min-height: auto;
    }

    .case-info h3 {
        font-size: 1.1rem;
        margin-bottom: 10px;
    }

    .case-info p {
        font-size: 0.9rem;
    }

    /* 团队卡片 */
    .team-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 20px;
    }

    .team-card {
        padding: 20px 15px;
    }

    .team-avatar {
        width: 100px;
        height: 100px;
        margin-bottom: 12px;
    }

    .team-card h3 {
        font-size: 1.1rem;
        margin-bottom: 8px;
    }

    .team-position {
        font-size: 0.85rem;
        margin-bottom: 10px;
    }

    .team-skills {
        font-size: 0.8rem;
    }

    .team-homepage-link {
        font-size: 0.8rem;
    }

    /* 联系方式 */
    .contact-methods {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .contact-method {
        padding: 20px;
    }

    .contact-icon {
        font-size: 2.2rem;
        margin-bottom: 14px;
    }

    .contact-method h4 {
        font-size: 1.1rem;
    }

    .contact-action-btn {
        width: 100%;
        padding: 10px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 40px 0;
    }

    .hero {
        padding: 60px 0 40px;
    }

    .hero h1 {
        font-size: 1.7rem;
        line-height: 1.25;
    }

    .hero p {
        font-size: 0.88rem;
    }

    .btn {
        font-size: 0.88rem;
        padding: 10px 16px;
    }

    .section-title {
        font-size: 1.4rem;
    }

    .section-subtitle {
        font-size: 0.85rem;
    }

    .service-card {
        padding: 18px;
    }

    .service-card h3 {
        font-size: 1.1rem;
    }

    .service-icon-wrapper {
        width: 48px;
        height: 48px;
    }

    .service-card-icon {
        font-size: 1.4rem;
    }

    .service-items li {
        font-size: 0.78rem;
    }

    .case-cover {
        height: 150px;
    }

    .case-info {
        padding: 15px;
    }

    .case-info h3 {
        font-size: 1rem;
    }

    .case-info p {
        font-size: 0.8rem;
    }

    .team-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .team-card {
        padding: 14px;
    }

    .team-avatar {
        width: 70px;
        height: 70px;
        margin-bottom: 8px;
    }

    .team-card h3 {
        font-size: 0.95rem;
        margin-bottom: 5px;
    }

    .team-position {
        font-size: 0.75rem;
        margin-bottom: 8px;
    }

    .team-homepage {
        margin-top: 8px;
    }

    .contact-methods {
        gap: 15px;
    }

    .contact-method {
        padding: 15px;
    }

    .contact-icon {
        font-size: 2rem;
        margin-bottom: 10px;
    }

    .contact-method h4 {
        font-size: 1rem;
    }

    .contact-action-btn {
        font-size: 0.8rem;
        padding: 8px;
    }
}

/* ==========================================================================
   键盘焦点可见性 - WCAG 2.4.7 / WCAG AAA
   ========================================================================== */
:focus-visible {
    outline: 2px solid var(--primary-light);
    outline-offset: 2px;
}

/* 链接焦点 */
a:focus-visible {
    outline: 2px solid var(--primary-light);
    outline-offset: 2px;
    border-radius: 2px;
}

/* 按钮焦点 */
button:focus-visible,
input[type="submit"]:focus-visible,
input[type="button"]:focus-visible {
    outline: 2px solid var(--primary-light);
    outline-offset: 2px;
}

/* 表单元素焦点 */
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--primary-light);
    outline-offset: 2px;
}

/* 移除鼠标点击时的焦点轮廓（保留键盘焦点） */
:focus:not(:focus-visible) {
    outline: none;
}

/* ==========================================================================
   增强视觉 - 大气感与丰富元素
   ========================================================================== */

/* 顶部工具栏 */
.top-bar {
    background: linear-gradient(135deg, #1E3A8A, #1E40AF);
    color: rgba(255, 255, 255, 0.9);
    font-size: 13px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}
.top-bar-left, .top-bar-right {
    display: flex;
    align-items: center;
    gap: 20px;
}
.top-bar a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: color 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.top-bar a:hover {
    color: #F97316;
}
.top-bar-right a {
    font-size: 15px;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    transition: all 0.2s ease;
}
.top-bar-right a:hover {
    background: rgba(249, 115, 22, 0.2);
    transform: translateY(-1px);
}
@media (max-width: 768px) {
    .top-bar { display: none; }
}

/* Logo 增强 - 圆形背景图标 + 品牌感文字 */
.logo .logo-icon-bg {
    background: var(--gradient, linear-gradient(135deg, #1E40AF, #3B82F6));
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.25);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.logo .logo-icon-bg .logo-icon {
    color: #fff;
    font-size: 22px;
}
.logo .logo-icon-bg:hover {
    transform: rotate(-8deg) scale(1.05);
    box-shadow: 0 6px 18px rgba(30, 64, 175, 0.35);
}
.logo .logo-text {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: 1.3rem;
    background: linear-gradient(135deg, #1E40AF, #3B82F6);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 0.3px;
}

/* Hero 区域增强 */
.hero {
    position: relative;
    overflow: hidden;
}
/* Hero 装饰性几何图形 */
.hero::before {
    content: '';
    position: absolute;
    top: 10%;
    right: -100px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.08), transparent 70%);
    border-radius: 50%;
    z-index: 0;
    animation: float-slow 8s ease-in-out infinite;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -150px;
    left: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(249, 115, 22, 0.06), transparent 70%);
    border-radius: 50%;
    z-index: 0;
    animation: float-slow 10s ease-in-out infinite reverse;
}
@keyframes float-slow {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(1.05); }
}

/* Hero 徽章 */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(30, 64, 175, 0.08);
    border: 1px solid rgba(30, 64, 175, 0.2);
    border-radius: 999px;
    color: #1E40AF;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
    animation: fadeInDown 0.6s ease;
}
.hero-badge i {
    color: #F97316;
    font-size: 12px;
}

/* Hero 标题增强 */
.hero h1 {
    position: relative;
}
.hero h1 span {
    position: relative;
    display: inline-block;
}
.hero h1 span::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 8px;
    background: rgba(249, 115, 22, 0.25);
    z-index: -1;
    border-radius: 4px;
}

/* 统计数据增强 - 大卡片样式 */
.home-stats-bar {
    margin-top: 3rem !important;
    padding: 2rem 1rem !important;
}
.home-stat-pill {
    min-width: 180px !important;
    padding: 1.5rem 2rem !important;
    background: rgba(255, 255, 255, 0.9) !important;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(30, 64, 175, 0.1) !important;
    box-shadow: 0 8px 32px rgba(30, 64, 175, 0.08) !important;
    border-radius: 16px !important;
    position: relative;
    overflow: hidden;
}
.home-stat-pill::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, #1E40AF, #3B82F6);
}
.home-stat-pill .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.1), rgba(59, 130, 246, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    color: #1E40AF;
    font-size: 20px;
}
.home-stat-pill .num {
    font-family: 'Poppins', sans-serif !important;
    font-size: 2rem !important;
    font-weight: 700 !important;
    background: linear-gradient(135deg, #1E40AF, #3B82F6);
    -webkit-background-clip: text !important;
    background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
}
.home-stat-pill .lbl {
    color: #64748B !important;
    font-weight: 500 !important;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.75rem !important;
}

/* 区块标题增强 */
.section-header {
    position: relative;
    padding: 0 20px !important;
}
.section-title {
    position: relative;
    display: inline-block;
}
.section-title::before {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #1E40AF, #F97316);
    border-radius: 2px;
}

/* 服务卡片增强 */
.service-card {
    position: relative;
    overflow: hidden;
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #1E40AF, #3B82F6);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}
.service-card:hover::before {
    transform: scaleX(1);
}
.service-icon-wrapper {
    position: relative;
}
.service-icon-wrapper::after {
    content: '';
    position: absolute;
    top: -8px;
    left: -8px;
    right: -8px;
    bottom: -8px;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.1), rgba(59, 130, 246, 0.1));
    border-radius: 50%;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.service-card:hover .service-icon-wrapper::after {
    opacity: 1;
}

/* 案例卡片增强 */
.case-card {
    position: relative;
    overflow: hidden;
}
.case-cover {
    position: relative;
    overflow: hidden;
}
.case-cover::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.4), rgba(249, 115, 22, 0.3));
    opacity: 0;
    transition: opacity 0.3s ease;
}
.case-card:hover .case-cover::after {
    opacity: 1;
}

/* 团队卡片增强 */
.team-card {
    position: relative;
    overflow: hidden;
}
.team-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.02), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}
.team-card:hover::before {
    opacity: 1;
}
.team-avatar {
    position: relative;
    border: 3px solid #fff;
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.15);
}
.team-avatar::after {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    border: 2px solid transparent;
    border-radius: 50%;
    background: linear-gradient(135deg, #1E40AF, #F97316) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.team-card:hover .team-avatar::after {
    opacity: 1;
}

/* 联系方式增强 */
.contact-method {
    position: relative;
    overflow: hidden;
}
.contact-method::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: linear-gradient(180deg, #1E40AF, #F97316);
    transition: height 0.3s ease;
}
.contact-method:hover::before {
    height: 100%;
}

/* Footer CTA 区块 */
.footer-cta {
    background: linear-gradient(135deg, #1E40AF, #3B82F6);
    padding: 3rem 0;
    position: relative;
    overflow: hidden;
}
.footer-cta::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -5%;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
}
.footer-cta-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    position: relative;
    z-index: 1;
}
.footer-cta-text h3 {
    color: #fff;
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 8px;
    font-family: 'Poppins', sans-serif;
}
.footer-cta-text p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1rem;
}
.footer-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    background: #F97316;
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.05rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(249, 115, 22, 0.4);
    white-space: nowrap;
}
.footer-cta-btn:hover {
    background: #EA580C;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(249, 115, 22, 0.5);
}
@media (max-width: 768px) {
    .footer-cta-content {
        flex-direction: column;
        text-align: center;
    }
}

/* Footer 增强 */
.site-footer {
    position: relative;
    overflow: hidden;
}
.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #1E40AF, #3B82F6, #F97316, #3B82F6, #1E40AF);
    background-size: 200% 100%;
    animation: gradient-shift 8s ease infinite;
}
@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* 按钮增强 */
.cta-btn, .btn {
    position: relative;
    overflow: hidden;
}
.cta-btn::after, .btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
}
.cta-btn:hover::after, .btn:hover::after {
    width: 300px;
    height: 300px;
}

/* 分隔线装饰 */
.section-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 2rem 0;
    gap: 15px;
}
.section-divider::before,
.section-divider::after {
    content: '';
    flex: 1;
    max-width: 100px;
    height: 1px;
    background: linear-gradient(90deg, transparent, #E2E8F0, transparent);
}
.section-divider i {
    color: #3B82F6;
    font-size: 16px;
}

/* 滚动渐入动画 */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 背景装饰图案 */
.tech-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}
.tech-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 30%, rgba(59, 130, 246, 0.04), transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(249, 115, 22, 0.03), transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(30, 64, 175, 0.02), transparent 70%);
}

/* 浮动装饰点 */
.dynamic-element .circle {
    border-radius: 50%;
    pointer-events: none;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .hero::before, .hero::after {
        display: none;
    }
    .home-stat-pill {
        min-width: calc(50% - 0.5rem) !important;
        padding: 1rem !important;
    }
    .home-stat-pill .num {
        font-size: 1.5rem !important;
    }
}

/* ==========================================================================
   Bento Grid 企业模块化布局
   ========================================================================== */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 180px;
    gap: 20px;
    margin: 2rem 0;
}
.bento-item {
    background: #FFFFFF;
    border-radius: 20px;
    padding: 24px;
    box-shadow: 0 4px 6px rgba(30, 64, 175, 0.05);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(30, 64, 175, 0.08);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.bento-item:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 20px 40px rgba(30, 64, 175, 0.12);
}
.bento-item.size-2x1 { grid-column: span 2; }
.bento-item.size-1x2 { grid-row: span 2; }
.bento-item.size-2x2 { grid-column: span 2; grid-row: span 2; }
.bento-item.featured {
    background: linear-gradient(135deg, #1E40AF, #3B82F6);
    color: #fff;
}
.bento-item.featured .bento-icon {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
}
.bento-item.accent {
    background: linear-gradient(135deg, #F97316, #FB923C);
    color: #fff;
}
.bento-item.accent .bento-icon {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
}
.bento-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.1), rgba(59, 130, 246, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #1E40AF;
    margin-bottom: 12px;
}
.bento-title {
    font-family: 'Poppins', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 6px;
}
.bento-desc {
    font-size: 0.875rem;
    opacity: 0.8;
    line-height: 1.5;
}
.bento-stat {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
    margin: 8px 0;
}
.bento-item.featured .bento-stat,
.bento-item.accent .bento-stat {
    color: #fff;
}
@media (max-width: 1024px) {
    .bento-grid { grid-template-columns: repeat(2, 1fr); }
    .bento-item.size-2x1 { grid-column: span 2; }
    .bento-item.size-2x2 { grid-column: span 2; grid-row: span 1; }
}
@media (max-width: 640px) {
    .bento-grid { grid-template-columns: 1fr; grid-auto-rows: auto; }
    .bento-item.size-2x1, .bento-item.size-1x2, .bento-item.size-2x2 {
        grid-column: span 1; grid-row: span 1;
    }
}

/* ==========================================================================
   滚动渐入动画 (Motion-Driven)
   ========================================================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.active {
    opacity: 1;
    transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-left.active {
    opacity: 1;
    transform: translateX(0);
}
.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-right.active {
    opacity: 1;
    transform: translateX(0);
}
.reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-scale.active {
    opacity: 1;
    transform: scale(1);
}
@media (prefers-reduced-motion: reduce) {
    .reveal, .reveal-left, .reveal-right, .reveal-scale {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }
}

/* ==========================================================================
   客户 Logo 轮播
   ========================================================================== */
.logo-marquee {
    overflow: hidden;
    padding: 2rem 0;
    position: relative;
    mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.logo-track {
    display: flex;
    gap: 60px;
    animation: marquee 30s linear infinite;
    width: max-content;
}
.logo-track:hover {
    animation-play-state: paused;
}
.logo-item {
    font-family: 'Poppins', sans-serif;
    font-size: 1.5rem;
    font-weight: 600;
    color: #94A3B8;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: color 0.3s ease;
}
.logo-item:hover {
    color: #1E40AF;
}
.logo-item i {
    font-size: 1.75rem;
}
@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ==========================================================================
   时间线流程
   ========================================================================== */
.timeline {
    position: relative;
    padding: 2rem 0;
}
.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 3px;
    background: linear-gradient(180deg, #1E40AF, #3B82F6, #F97316);
    transform: translateX(-50%);
    border-radius: 2px;
}
.timeline-item {
    position: relative;
    width: 50%;
    padding: 20px 40px;
    margin-bottom: 20px;
}
.timeline-item:nth-child(odd) {
    left: 0;
    text-align: right;
}
.timeline-item:nth-child(even) {
    left: 50%;
}
.timeline-item::after {
    content: '';
    position: absolute;
    top: 28px;
    width: 18px;
    height: 18px;
    background: #fff;
    border: 4px solid #1E40AF;
    border-radius: 50%;
    z-index: 1;
}
.timeline-item:nth-child(odd)::after {
    right: -9px;
}
.timeline-item:nth-child(even)::after {
    left: -9px;
}
.timeline-content {
    background: #fff;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.08);
    border: 1px solid rgba(30, 64, 175, 0.08);
}
.timeline-step {
    display: inline-block;
    padding: 2px 10px;
    background: rgba(30, 64, 175, 0.1);
    color: #1E40AF;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 8px;
}
.timeline-title {
    font-family: 'Poppins', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    color: #1E293B;
    margin-bottom: 6px;
}
.timeline-desc {
    font-size: 0.875rem;
    color: #64748B;
    line-height: 1.5;
}
@media (max-width: 768px) {
    .timeline::before { left: 20px; }
    .timeline-item { width: 100%; left: 0 !important; text-align: left !important; padding-left: 50px; padding-right: 20px; }
    .timeline-item::after { left: 11px !important; right: auto !important; }
}

/* ==========================================================================
   FAQ 折叠
   ========================================================================== */
.faq-item {
    background: #fff;
    border: 1px solid rgba(30, 64, 175, 0.1);
    border-radius: 12px;
    margin-bottom: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}
.faq-item:hover {
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.08);
}
.faq-question {
    padding: 18px 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    color: #1E293B;
    user-select: none;
}
.faq-question i {
    color: #1E40AF;
    transition: transform 0.3s ease;
}
.faq-item.open .faq-question i {
    transform: rotate(180deg);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 24px;
    color: #64748B;
    line-height: 1.6;
}
.faq-item.open .faq-answer {
    max-height: 300px;
    padding-bottom: 18px;
}

/* ==========================================================================
   价值主张卡片
   ========================================================================== */
.value-card {
    background: #fff;
    border-radius: 16px;
    padding: 28px;
    text-align: center;
    border: 1px solid rgba(30, 64, 175, 0.08);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    height: 100%;
}
.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #1E40AF, #3B82F6);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}
.value-card:hover::before {
    transform: scaleX(1);
}
.value-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 32px rgba(30, 64, 175, 0.1);
}
.value-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.1), rgba(59, 130, 246, 0.15));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    color: #1E40AF;
}
.value-title {
    font-family: 'Poppins', sans-serif;
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #1E293B;
}
.value-desc {
    font-size: 0.9rem;
    color: #64748B;
    line-height: 1.6;
}

/* ==========================================================================
   数据进度条
   ========================================================================== */
.skill-bar {
    margin-bottom: 20px;
}
.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.9rem;
}
.skill-name {
    font-weight: 500;
    color: #1E293B;
}
.skill-percent {
    color: #1E40AF;
    font-weight: 600;
}
.skill-track {
    height: 8px;
    background: rgba(30, 64, 175, 0.08);
    border-radius: 4px;
    overflow: hidden;
}
.skill-fill {
    height: 100%;
    background: linear-gradient(90deg, #1E40AF, #3B82F6, #F97316);
    border-radius: 4px;
    width: 0;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   Elevation 阴影系统
   ========================================================================== */
.elevation-1 { box-shadow: 0 1px 3px rgba(30, 64, 175, 0.1); }
.elevation-2 { box-shadow: 0 4px 6px rgba(30, 64, 175, 0.1); }
.elevation-3 { box-shadow: 0 10px 20px rgba(30, 64, 175, 0.1); }
.elevation-4 { box-shadow: 0 20px 40px rgba(30, 64, 175, 0.15); }

/* ==========================================================================
   数字滚动计数器
   ========================================================================== */
.counter-card {
    text-align: center;
    padding: 24px 16px;
    background: #fff;
    border-radius: 16px;
    border: 1px solid rgba(30, 64, 175, 0.08);
    transition: all 0.3s ease;
}
.counter-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(30, 64, 175, 0.1);
}
.counter-num {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #1E40AF, #3B82F6);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
}
.counter-suffix {
    font-size: 1.5rem;
    color: #F97316;
    -webkit-text-fill-color: #F97316;
}
.counter-label {
    color: #64748B;
    font-size: 0.875rem;
    margin-top: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==========================================================================
   视频/媒体占位
   ========================================================================== */
.media-showcase {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    background: linear-gradient(135deg, #1E3A8A, #1E40AF);
    aspect-ratio: 16 / 9;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}
.media-showcase::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 30% 40%, rgba(59, 130, 246, 0.3), transparent 60%),
        radial-gradient(circle at 70% 60%, rgba(249, 115, 22, 0.2), transparent 60%);
}
.play-btn {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 28px;
    transition: all 0.3s ease;
    z-index: 1;
    position: relative;
}
.play-btn::before {
    content: '';
    position: absolute;
    inset: -10px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    animation: pulse-ring 2s ease-out infinite;
}
@keyframes pulse-ring {
    0% { transform: scale(0.9); opacity: 1; }
    100% { transform: scale(1.4); opacity: 0; }
}
.media-showcase:hover .play-btn {
    background: #F97316;
    border-color: #F97316;
    transform: scale(1.1);
}
.media-label {
    position: absolute;
    bottom: 24px;
    left: 24px;
    color: #fff;
    z-index: 1;
}
.media-label h3 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.3rem;
    margin-bottom: 4px;
}
.media-label p {
    opacity: 0.8;
    font-size: 0.875rem;
}

/* ==========================================================================
   标签筛选
   ========================================================================== */
.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}
.filter-tab {
    padding: 8px 20px;
    background: #fff;
    border: 1px solid rgba(30, 64, 175, 0.15);
    border-radius: 999px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    color: #475569;
    transition: all 0.3s ease;
}
.filter-tab:hover {
    border-color: #1E40AF;
    color: #1E40AF;
}
.filter-tab.active {
    background: #1E40AF;
    color: #fff;
    border-color: #1E40AF;
}