/* ================================================
   ShopFindBiz 高级前台样式 v2.0
   设计理念：现代、精致、商务、动感
   ================================================ */

/* CSS 变量 - 主题色 */
:root {
    --primary: #0066ff;
    --primary-dark: #0052cc;
    --primary-light: #3385ff;
    --secondary: #00d4aa;
    --accent: #ff6b6b;
    --dark: #0a0e27;
    --gray-900: #1a1f36;
    --gray-800: #2d3748;
    --gray-700: #4a5568;
    --gray-600: #718096;
    --gray-500: #a0aec0;
    --gray-400: #cbd5e0;
    --gray-300: #e2e8f0;
    --gray-200: #edf2f7;
    --gray-100: #f7fafc;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #0066ff 0%, #00d4aa 100%);
    --gradient-3: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-4: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
    --shadow-xl: 0 24px 48px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
    color: var(--gray-800);
    background-color: #fff;
    line-height: 1.6;
    font-size: 15px;
    padding-top: 76px;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

img {
    max-width: 100%;
    display: block;
}

ul, ol {
    list-style: none;
}

.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0;
}

/* 通用动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

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

@keyframes countUp {
    from { transform: translateY(100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    white-space: nowrap;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--gradient-2);
    color: #fff;
    box-shadow: 0 4px 16px rgba(0, 102, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 102, 255, 0.4);
    color: #fff;
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 102, 255, 0.3);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 16px;
}

.btn-block {
    display: flex;
    width: 100%;
}

/* ================================================
   导航栏
   ================================================ */
.sfb-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.sfb-navbar.scrolled {
    box-shadow: var(--shadow);
}

.sfb-navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
    position: relative;
    padding-right: 180px;
}

.sfb-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 800;
    color: var(--gray-900) !important;
}

.sfb-brand .logo {
    width: 38px;
    height: 38px;
    background: var(--gradient-2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
}
.sfb-brand .logo-img {
    width: 38px;
    height: 38px;
    object-fit: contain;
    border-radius: 10px;
    display: block;
}

.sfb-brand span {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sfb-menu {
    display: flex;
    align-items: center;
    gap: 36px;
}

.sfb-menu > li > a {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray-700);
    padding: 8px 0;
    position: relative;
}

.sfb-menu > li > a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-2);
    border-radius: 2px;
    transition: var(--transition);
}

.sfb-menu > li > a:hover,
.sfb-menu > li.active > a {
    color: var(--primary);
}

.sfb-menu > li > a:hover::after,
.sfb-menu > li.active > a::after {
    width: 100%;
}

.sfb-dropdown {
    position: relative;
}

.sfb-dropdown > a {
    display: flex;
    align-items: center;
    gap: 6px;
}

.sfb-dropdown > a::after {
    display: none !important;
}

.sfb-dropdown .dropdown-arrow {
    font-size: 10px;
    transition: transform 0.3s;
}

.sfb-dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.sfb-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 200px;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 8px;
    box-shadow: 0 12px 28px rgba(0,0,0,0.12);
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
    z-index: 1001;
}

.sfb-dropdown:hover .sfb-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.sfb-dropdown-menu li {
    list-style: none;
}

.sfb-dropdown-menu li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    color: #374151;
    transition: all 0.2s;
    white-space: nowrap;
}

.sfb-dropdown-menu li a .menu-icon + span {
    margin-left: 0;
}

.sfb-dropdown-menu li a:hover {
    background: #f3f4f6;
    color: #6366f1;
}

.sfb-dropdown-menu li a .menu-icon {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
    border: none;
    outline: none;
    box-shadow: none;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow: hidden;
}

.sfb-dropdown-menu li a .menu-icon.store {
    background: linear-gradient(135deg, #eef2ff, #e0e7ff);
    color: #4338ca;
}

.sfb-dropdown-menu li a .menu-icon.product {
    background: linear-gradient(135deg, #ecfdf5, #d1fae5);
    color: #047857;
}

.sfb-dropdown-menu li a .menu-icon.supplier {
    background: linear-gradient(135deg, #fff7ed, #ffedd5);
    color: #c2410c;
}

.sfb-dropdown-menu li a .menu-icon.tag {
    background: linear-gradient(135deg, #faf5ff, #f3e8ff);
    color: #7c3aed;
}

.sfb-dropdown-menu li a .menu-icon.social {
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    color: #1d4ed8;
}

.sfb-dropdown-menu li a .menu-icon.timeline {
    background: #bbf7d0;
    color: #15803d;
    width: 28px;
    font-size: 10px;
}

.sfb-dropdown-menu li a .menu-icon.price {
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    color: #b45309;
}

.sfb-dropdown-menu li a .menu-icon.monitor {
    background: linear-gradient(135deg, #fce7f3, #fbcfe8);
    color: #be185d;
}

.sfb-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn-get-ext {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 20px;
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.25s ease;
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.3);
}

.btn-get-ext:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
    color: #fff;
    text-decoration: none;
}

.btn-get-ext:active {
    transform: translateY(0);
}

.btn-user-center {
    display: inline-flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    padding: 6px 6px 6px 16px;
    font-size: 15px;
    font-weight: 600;
    color: #374151;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 50px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.25s ease;
    white-space: nowrap;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
    min-width: auto;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1001;
}

.btn-user-center:hover {
    border-color: #8b5cf6;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.15);
    text-decoration: none;
    color: #6d28d9;
}

.btn-user-center .uc-user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
    line-height: 1.2;
}

.btn-user-center .uc-nickname {
    font-size: 15px;
    font-weight: 700;
    color: #1e293b;
}

.btn-user-center .uc-role {
    font-size: 12px;
    font-weight: 500;
    color: #64748b;
}

.btn-user-center .uc-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #c4b5fd 0%, #a78bfa 50%, #8b5cf6 100%);
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.25);
    overflow: hidden;
    padding: 2px;
}

.btn-user-center .uc-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    display: block;
}

.sfb-mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.sfb-mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-800);
    margin: 5px 0;
    transition: var(--transition);
}

/* ================================================
   Hero 区域 - 全屏震撼
   ================================================ */
.hero-section {
    position: relative;
    min-height: calc(100vh - 76px);
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 0;
}
.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 2;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 102, 255, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -200px;
    left: -200px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 212, 170, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 10s ease-in-out infinite reverse;
}

.hero-section .container {
    position: relative;
    z-index: 3;
}

.hero-content {
    text-align: center;
    max-width: 880px;
    margin: 0 auto;
    animation: fadeInUp 1s ease;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(0, 102, 255, 0.1);
    color: var(--primary);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 28px;
    border: 1px solid rgba(0, 102, 255, 0.2);
}

.hero-badge i {
    color: var(--secondary);
    animation: pulse 2s infinite;
}

.hero-title {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.15;
    color: #fff;
    margin-bottom: 24px;
    letter-spacing: -1.5px;
}

.hero-title .gradient {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
}

.hero-title .gradient::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 0;
    right: 0;
    height: 8px;
    background: rgba(0, 212, 170, 0.2);
    z-index: -1;
    border-radius: 4px;
}

.hero-subtitle {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 48px;
    line-height: 1.7;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 80px;
}

.hero-actions .btn i {
    font-size: 16px;
}

/* Hero 搜索框 */
.hero-search {
    max-width: 640px;
    margin: 0 auto 60px;
    background: #fff;
    border-radius: 16px;
    padding: 8px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 4px;
}

.hero-search input {
    flex: 1;
    border: none;
    outline: none;
    padding: 14px 20px;
    font-size: 15px;
    background: transparent;
    color: var(--gray-800);
}

.hero-search input::placeholder {
    color: var(--gray-500);
}

.hero-search .btn {
    padding: 14px 28px;
}

.hero-search-tags {
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 16px;
}

.hero-search-tags a {
    color: #fff;
    margin: 0 8px;
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    display: inline-block;
    margin-top: 4px;
}

.hero-search-tags a:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
}

/* Hero 统计 */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    max-width: 920px;
    margin: 0 auto;
    padding: 40px 0;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.stat-item {
    text-align: center;
    animation: fadeInUp 0.8s ease backwards;
}

.stat-item:nth-child(1) { animation-delay: 0.1s; }
.stat-item:nth-child(2) { animation-delay: 0.2s; }
.stat-item:nth-child(3) { animation-delay: 0.3s; }
.stat-item:nth-child(4) { animation-delay: 0.4s; }

.stat-number {
    font-size: 42px;
    font-weight: 800;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    margin-bottom: 8px;
    letter-spacing: -1px;
}

.stat-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

/* ================================================
   核心功能 - 高级卡片设计
   ================================================ */
.features-section {
    padding: 60px 0;
    background: #fff;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 102, 255, 0.1);
    color: var(--primary);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.section-header h2 {
    font-size: 44px;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 16px;
    letter-spacing: -1px;
    line-height: 1.2;
}

.section-header h2 .gradient {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-header p {
    font-size: 17px;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.feature-card {
    background: #fff;
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.8s ease backwards;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-2);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 72px;
    height: 72px;
    margin-bottom: 28px;
    background: var(--gradient-2);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: 0 8px 24px rgba(0, 102, 255, 0.25);
}

.feature-card:nth-child(2) .feature-icon {
    background: var(--gradient-3);
    box-shadow: 0 8px 24px rgba(245, 87, 108, 0.25);
}

.feature-card:nth-child(3) .feature-icon {
    background: var(--gradient-4);
    box-shadow: 0 8px 24px rgba(79, 172, 254, 0.25);
}

.feature-card:nth-child(4) .feature-icon {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    box-shadow: 0 8px 24px rgba(250, 112, 154, 0.25);
}

.feature-icon::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 22px;
    background: inherit;
    z-index: -1;
    opacity: 0.3;
    filter: blur(15px);
    transition: var(--transition);
}

.feature-card:hover .feature-icon::after {
    opacity: 0.6;
    inset: -8px;
}

.feature-icon i {
    font-size: 32px;
    color: #fff;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 20px;
}

.feature-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}

.feature-link i {
    transition: var(--transition);
}

.feature-link:hover {
    gap: 10px;
    color: var(--primary-dark);
}

/* ================================================
   数据统计 - 视觉震撼
   ================================================ */
.stats-section {
    position: relative;
    padding: 60px 0;
    background: linear-gradient(135deg, #0066ff 0%, #00d4aa 100%);
    color: #fff;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(255,255,255,0.08) 0%, transparent 50%);
}

.stats-section .container {
    position: relative;
    z-index: 2;
}

.stats-section .section-header h2 {
    color: #fff;
}

.stats-section .section-header p {
    color: rgba(255,255,255,0.9);
}

.stats-section .section-tag {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    backdrop-filter: blur(10px);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-top: 60px;
}

.stat-block {
    text-align: center;
    padding: 40px 24px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
    animation: fadeInUp 0.8s ease backwards;
}

.stat-block:nth-child(1) { animation-delay: 0.1s; }
.stat-block:nth-child(2) { animation-delay: 0.2s; }
.stat-block:nth-child(3) { animation-delay: 0.3s; }
.stat-block:nth-child(4) { animation-delay: 0.4s; }

.stat-block:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-8px);
}

.stat-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #fff;
}

.stat-value {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 8px;
    line-height: 1;
    letter-spacing: -1px;
    color: #fff;
}

.stats-section .stat-value {
    color: #fff;
    background: none;
    -webkit-text-fill-color: #fff;
    -webkit-background-clip: border-box;
    background-clip: border-box;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.stat-desc {
    font-size: 14px;
    opacity: 0.9;
    font-weight: 500;
}

.stats-section .stat-desc {
    color: rgba(255, 255, 255, 0.9);
}

/* ================================================
   用户评价 - 现代感
   ================================================ */
.stats-section {
    padding: 60px 0;
    background: var(--gray-100);
    position: relative;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.testimonial-card {
    background: #fff;
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    transition: var(--transition);
    position: relative;
    border: 1px solid var(--gray-200);
    animation: fadeInUp 0.8s ease backwards;
}

.testimonial-card:nth-child(1) { animation-delay: 0.1s; }
.testimonial-card:nth-child(2) { animation-delay: 0.2s; }
.testimonial-card:nth-child(3) { animation-delay: 0.3s; }

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 24px;
    right: 32px;
    font-size: 80px;
    color: var(--gray-200);
    font-family: Georgia, serif;
    line-height: 1;
    font-weight: 800;
}

.testimonial-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.testimonial-stars {
    color: #fbbf24;
    margin-bottom: 20px;
    font-size: 16px;
}

.testimonial-stars i {
    margin-right: 2px;
}

.testimonial-content p {
    font-size: 15px;
    color: var(--gray-700);
    line-height: 1.8;
    margin-bottom: 28px;
    position: relative;
    z-index: 2;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 14px;
    padding-top: 24px;
    border-top: 1px solid var(--gray-200);
}

.author-avatar {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--gradient-2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 22px;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
}

.testimonial-card:nth-child(2) .author-avatar {
    background: var(--gradient-3);
    box-shadow: 0 4px 12px rgba(245, 87, 108, 0.3);
}

.testimonial-card:nth-child(3) .author-avatar {
    background: var(--gradient-4);
    box-shadow: 0 4px 12px rgba(79, 172, 254, 0.3);
}

.author-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.author-title {
    font-size: 13px;
    color: var(--gray-500);
}

/* ================================================
   CTA 区域
   ================================================ */
.cta-section {
    padding: 60px 0;
    background: #fff;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0, 102, 255, 0.05) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-wrap {
    position: relative;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 80px 40px;
    background: linear-gradient(135deg, #0066ff 0%, #00d4aa 100%);
    border-radius: 32px;
    color: #fff;
    box-shadow: 0 24px 64px rgba(0, 102, 255, 0.3);
    overflow: hidden;
}

.cta-wrap::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 50%);
    border-radius: 50%;
}

.cta-wrap::after {
    content: '';
    position: absolute;
    bottom: -50%;
    left: -50%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 50%);
    border-radius: 50%;
}

.cta-wrap > * {
    position: relative;
    z-index: 2;
}

.cta-wrap h2 {
    font-size: 44px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -1px;
    line-height: 1.2;
}

.cta-wrap p {
    font-size: 18px;
    opacity: 0.95;
    margin-bottom: 40px;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-actions .btn-primary {
    background: #fff;
    color: var(--primary);
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.cta-actions .btn-primary:hover {
    color: var(--primary-dark);
    box-shadow: 0 12px 32px rgba(0,0,0,0.2);
}

.cta-actions .btn-outline {
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,0.5);
}

.cta-actions .btn-outline:hover {
    background: rgba(255,255,255,0.15);
    color: #fff;
    border-color: #fff;
}

/* ================================================
   浏览器检测 - Browser Detect
   ================================================ */
.browser-detect-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #f8faff 0%, #eef3ff 100%);
    position: relative;
    overflow: hidden;
}

.browser-detect-section::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 212, 170, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.browser-detect-card {
    max-width: 600px;
    margin: 0 auto 40px;
    background: #fff;
    border-radius: 24px;
    padding: 48px 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    display: flex;
    align-items: center;
    gap: 32px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.browser-detect-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
}

.detect-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #0066ff 0%, #00d4aa 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: #fff;
    flex-shrink: 0;
    transition: all 0.3s;
}

.detect-content {
    flex: 1;
}

.detect-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 8px;
}

.detect-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin: 0;
}

.detect-action .btn {
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.browser-list {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.browser-item {
    background: #fff;
    border-radius: 16px;
    padding: 20px 24px;
    text-align: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    min-width: 120px;
}

.browser-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.browser-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #fff;
    margin: 0 auto 12px;
}

.browser-icon.chrome {
    background: linear-gradient(135deg, #4285F4 0%, #34a853 50%, #fbbc05 75%, #ea4335 100%);
}

.browser-icon.firefox {
    background: linear-gradient(135deg, #ff7139 0%, #ffbb33 100%);
}

.browser-icon.edge {
    background: linear-gradient(135deg, #0078d7 0%, #00bcf2 100%);
}

.browser-icon.safari {
    background: linear-gradient(135deg, #00afff 0%, #5856d6 100%);
}

.browser-icon.opera {
    background: linear-gradient(135deg, #ff1b2d 0%, #ff6b35 100%);
}

.browser-item span {
    font-size: 13px;
    color: #555;
    font-weight: 500;
}

@media (max-width: 768px) {
    .browser-detect-card {
        flex-direction: column;
        text-align: center;
        padding: 32px 24px;
    }
    .detect-action {
        width: 100%;
    }
    .detect-action .btn {
        width: 100%;
    }
    .browser-item {
        min-width: 100px;
        padding: 16px;
    }
}

/* ================================================
   页脚 - 高级感
   ================================================ */
.sfb-footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: 60px 0 0;
    position: relative;
    overflow: hidden;
}

.sfb-footer .container {
    max-width: 1400px !important;
    width: 100% !important;
    padding: 0 40px !important;
}

.sfb-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-2);
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    gap: 48px;
    margin-bottom: 60px;
    width: 100%;
}

.footer-brand {
    flex: 0 0 280px;
}

.footer-col {
    flex: 0 0 auto;
    min-width: 160px;
}

.footer-brand .sfb-brand {
    color: #fff !important;
    margin-bottom: 20px;
}

.footer-brand .sfb-brand span {
    color: #fff;
    -webkit-text-fill-color: #fff;
}

.footer-brand p {
    font-size: 15px;
    line-height: 1.9;
    color: var(--gray-400);
    margin-bottom: 28px;
}

.social-links {
    display: flex;
    gap: 14px;
}

.social-link {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    transition: var(--transition);
    font-size: 18px;
}

.social-link:hover {
    background: var(--gradient-2);
    color: #fff;
    transform: translateY(-3px);
}

.footer-col h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: 0.5px;
}

.footer-col ul li {
    padding: 10px 0;
    line-height: 1.7;
}

.footer-col ul li a {
    color: var(--gray-400);
    font-size: 15px;
    transition: var(--transition);
    display: block;
    padding-left: 0;
    line-height: 1.7;
    white-space: nowrap;
}

.footer-col ul li a:hover {
    color: #fff;
    transform: translateX(4px);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--gray-400);
    font-size: 14px;
    padding: 6px 0;
}

.footer-contact i {
    color: var(--primary-light);
    margin-top: 3px;
}

.footer-bottom {
    padding: 24px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 13px;
    color: var(--gray-500);
}

.footer-bottom a {
    color: var(--gray-400);
    margin: 0 12px;
}

.footer-bottom a:hover {
    color: #fff;
}

/* ================================================
   时间轴 - 高级可视化
   ================================================ */
.timeline-section {
    padding: 60px 0;
    background: var(--gray-100);
    position: relative;
}

.timeline-section .section-header {
    margin-bottom: 60px;
}

.timeline {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
}

.timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--primary) 0%, var(--secondary) 100%);
    transform: translateX(-50%);
    border-radius: 2px;
}

.timeline-items {
    position: relative;
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 48px;
    position: relative;
    animation: fadeInUp 0.8s ease backwards;
}

.timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-item:nth-child(2) { animation-delay: 0.2s; }
.timeline-item:nth-child(3) { animation-delay: 0.3s; }
.timeline-item:nth-child(4) { animation-delay: 0.4s; }
.timeline-item:nth-child(5) { animation-delay: 0.5s; }

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    box-shadow: 0 8px 24px rgba(0, 102, 255, 0.35);
    transition: var(--transition);
}

.timeline-item:hover .timeline-dot {
    transform: translateX(-50%) scale(1.2);
    box-shadow: 0 12px 32px rgba(0, 102, 255, 0.5);
}

.timeline-year {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    line-height: 1;
}

.timeline-card {
    width: calc(50% - 50px);
    padding: 32px;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.timeline-item:hover .timeline-card {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.timeline-item:not(.timeline-item-right) .timeline-card {
    margin-right: auto;
    margin-left: 0;
    padding-right: 48px;
}

.timeline-item.timeline-item-right {
    flex-direction: row-reverse;
}

.timeline-item.timeline-item-right .timeline-card {
    margin-left: auto;
    margin-right: 0;
    padding-left: 48px;
}

.timeline-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
    line-height: 1.3;
}

.timeline-card p {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 16px;
}

.timeline-meta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.timeline-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(0, 102, 255, 0.08);
    color: var(--primary);
    font-size: 12px;
    font-weight: 500;
    border-radius: 50px;
    border: 1px solid rgba(0, 102, 255, 0.15);
    transition: var(--transition);
}

.timeline-meta span:hover {
    background: rgba(0, 102, 255, 0.15);
}

.timeline-meta i {
    font-size: 12px;
}

/* ================================================
   产品页 / 通用卡片网格
   ================================================ */
.page-header {
    background: linear-gradient(135deg, #f8faff 0%, #e8f0ff 100%);
    padding: 50px 0 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 102, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.page-header h1 {
    font-size: 48px;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 16px;
    position: relative;
    letter-spacing: -1px;
}

.page-header p {
    font-size: 18px;
    color: var(--gray-600);
    position: relative;
}

.products-section {
    padding: 60px 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.product-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--gray-200);
    animation: fadeInUp 0.6s ease backwards;
}

.product-card:nth-child(1) { animation-delay: 0.05s; }
.product-card:nth-child(2) { animation-delay: 0.1s; }
.product-card:nth-child(3) { animation-delay: 0.15s; }
.product-card:nth-child(4) { animation-delay: 0.2s; }
.product-card:nth-child(5) { animation-delay: 0.25s; }
.product-card:nth-child(6) { animation-delay: 0.3s; }

.product-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.product-image {
    height: 200px;
    background: var(--gradient-2);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.2) 0%, transparent 50%);
}

.product-image i {
    font-size: 72px;
    color: rgba(255, 255, 255, 0.9);
    z-index: 1;
}

.product-card:nth-child(2) .product-image { background: var(--gradient-3); }
.product-card:nth-child(3) .product-image { background: var(--gradient-4); }
.product-card:nth-child(4) .product-image { background: linear-gradient(135deg, #fa709a 0%, #fee140 100%); }
.product-card:nth-child(5) .product-image { background: linear-gradient(135deg, #30cfd0 0%, #330867 100%); }
.product-card:nth-child(6) .product-image { background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%); }

.product-content {
    padding: 28px;
}

.product-category {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 102, 255, 0.1);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 14px;
}

.product-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 10px;
}

.product-desc {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 20px;
    min-height: 48px;
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 20px;
    border-top: 1px solid var(--gray-200);
}

.product-price {
    display: flex;
    flex-direction: column;
}

.product-price .price {
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.product-price .unit {
    font-size: 12px;
    color: var(--gray-500);
    margin-top: 4px;
}

.product-action {
    padding: 8px 16px;
    background: var(--gray-100);
    border-radius: 8px;
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

.product-action:hover {
    background: var(--primary);
    color: #fff;
    transform: translateX(4px);
}

/* ================================================
   新闻页面 - 现代卡片布局
   ================================================ */
.news-section {
    padding: 60px 0;
    background: #fff;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.news-featured {
    grid-column: span 2;
    position: relative;
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
    animation: fadeInUp 0.8s ease backwards;
    transition: var(--transition);
}

.news-featured:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.news-featured-bg {
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    opacity: 0.15;
}

.news-featured-content {
    position: relative;
    z-index: 2;
    padding: 40px;
    padding-right: 20%;
}

.news-featured-category {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 102, 255, 0.1);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 20px;
    border: 1px solid rgba(0, 102, 255, 0.2);
}

.news-featured-title {
    font-size: 28px;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1.3;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.news-featured-excerpt {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 24px;
}

.news-featured-meta {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
    font-size: 14px;
    color: var(--gray-500);
}

.news-featured-meta i {
    margin-right: 6px;
    color: var(--primary-light);
}

.news-featured-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--gradient-2);
    color: #fff;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    box-shadow: 0 4px 16px rgba(0, 102, 255, 0.3);
}

.news-featured-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 102, 255, 0.4);
}

.news-featured-icon {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 160px;
    height: 160px;
    background: rgba(0, 102, 255, 0.05);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.6;
    transition: var(--transition);
}

.news-featured:hover .news-featured-icon {
    opacity: 0.9;
    transform: scale(1.1);
}

.news-featured-icon i {
    font-size: 64px;
    color: var(--primary);
}

.news-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    animation: fadeInUp 0.8s ease backwards;
}

.news-card:nth-child(2) { animation-delay: 0.1s; }
.news-card:nth-child(3) { animation-delay: 0.2s; }
.news-card:nth-child(4) { animation-delay: 0.3s; }
.news-card:nth-child(5) { animation-delay: 0.4s; }
.news-card:nth-child(6) { animation-delay: 0.5s; }

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.news-card-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    box-shadow: 0 6px 18px rgba(0, 102, 255, 0.25);
    transition: var(--transition);
}

.news-card:nth-child(3) .news-card-icon { background: var(--gradient-3); box-shadow: 0 6px 18px rgba(245, 87, 108, 0.25); }
.news-card:nth-child(4) .news-card-icon { background: var(--gradient-4); box-shadow: 0 6px 18px rgba(79, 172, 254, 0.25); }
.news-card:nth-child(5) .news-card-icon { background: linear-gradient(135deg, #fa709a 0%, #fee140 100%); box-shadow: 0 6px 18px rgba(250, 112, 154, 0.25); }
.news-card:nth-child(6) .news-card-icon { background: linear-gradient(135deg, #30cfd0 0%, #330867 100%); box-shadow: 0 6px 18px rgba(48, 207, 208, 0.25); }

.news-card:hover .news-card-icon {
    transform: scale(1.1) rotate(5deg);
}

.news-card-icon i {
    font-size: 26px;
    color: #fff;
}

.news-card-category {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 102, 255, 0.08);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 12px;
}

.news-card-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.4;
    margin-bottom: 10px;
    transition: var(--transition);
}

.news-card:hover .news-card-title {
    color: var(--primary);
}

.news-card-excerpt {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--gray-500);
}

.news-card-meta i {
    margin-right: 5px;
}

.news-card-link {
    position: absolute;
    inset: 0;
    z-index: 10;
}

/* ================================================
   Support/Help Center 页面 - 分类卡片布局
   ================================================ */
.help-section {
    padding: 60px 0;
    background: #fff;
}

.help-grid {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 32px;
}

.help-categories {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.help-category {
    padding: 24px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 2px solid var(--gray-100);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.help-category:hover,
.help-category.active {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateX(8px);
}

.help-category.active {
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.05) 0%, rgba(0, 212, 170, 0.05) 100%);
}

.help-category-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #0066ff 0%, #00d4aa 100%);
    box-shadow: 0 4px 14px rgba(0, 102, 255, 0.3);
    transition: var(--transition);
}

.help-category:hover .help-category-icon,
.help-category.active .help-category-icon {
    transform: scale(1.1);
}

.help-category:nth-child(2) .help-category-icon {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    box-shadow: 0 4px 14px rgba(250, 112, 154, 0.3);
}

.help-category:nth-child(3) .help-category-icon {
    background: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
    box-shadow: 0 4px 14px rgba(48, 207, 208, 0.3);
}

.help-category:nth-child(4) .help-category-icon {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    box-shadow: 0 4px 14px rgba(168, 237, 234, 0.5);
}

.help-category-icon i {
    font-size: 22px;
    color: #fff;
}

.help-category h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 6px;
}

.help-category p {
    font-size: 13px;
    color: var(--gray-500);
    line-height: 1.5;
}

.help-category-count {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 26px;
    height: 26px;
    line-height: 26px;
    text-align: center;
    background: var(--gray-100);
    color: var(--gray-600);
    font-size: 12px;
    font-weight: 600;
    border-radius: 50%;
    transition: var(--transition);
}

.help-category.active .help-category-count {
    background: var(--primary);
    color: #fff;
}

.help-content {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--gray-200);
    min-height: 500px;
}

.faq-panel-header {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--gray-100);
}

.faq-panel-header h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
}

.faq-panel-header i {
    margin-right: 10px;
    color: var(--primary);
}

.faq-panel-items {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-card {
    background: #fafbfc;
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    overflow: hidden;
    transition: var(--transition);
}

.faq-card:hover {
    border-color: var(--primary-light);
    background: #fff;
}

.faq-card.active {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.faq-card-question {
    width: 100%;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}

.faq-card-question span {
    font-size: 15px;
    font-weight: 600;
    color: var(--gray-800);
    flex: 1;
}

.faq-card-question i {
    font-size: 16px;
    color: var(--gray-400);
    transition: var(--transition);
    margin-left: 12px;
}

.faq-card.active .faq-card-question i {
    transform: rotate(90deg);
    color: var(--primary);
}

.faq-card-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
}

.faq-card.active .faq-card-answer {
    padding: 0 24px 20px;
    max-height: 200px;
}

.faq-card-answer p {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.7;
}

/* ================================================
   Help Center 响应式
   ================================================ */
@media (max-width: 900px) {
    .help-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .help-categories {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 10px;
    }
    .help-category {
        flex: 1 1 calc(50% - 5px);
        min-width: 160px;
        padding: 16px;
    }
    .help-category-icon {
        width: 36px;
        height: 36px;
        margin-bottom: 10px;
    }
    .help-category h3 {
        font-size: 14px;
    }
    .help-category p {
        display: none;
    }
    .help-content {
        padding: 24px;
        min-height: auto;
    }
}

@media (max-width: 480px) {
    .help-category {
        flex: 1 1 100%;
    }
}

/* ================================================
   About Us 页面 - 现代卡片布局
   ================================================ */
.about-section {
    padding: 0;
    background: #fff;
}

.about-hero {
    padding: 60px 0;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #f8faff 0%, #e8f5ff 50%, #f0fff8 100%);
}

.about-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(0, 102, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 50%, rgba(0, 212, 170, 0.1) 0%, transparent 50%);
}

.about-hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-hero-content h2 {
    font-size: 42px;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 24px;
    line-height: 1.2;
}

.about-hero-content p {
    font-size: 16px;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 48px;
    padding-top: 40px;
    border-top: 1px solid rgba(0, 102, 255, 0.1);
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 42px;
    font-weight: 800;
    color: var(--primary);
    background: linear-gradient(135deg, #0066ff 0%, #00d4aa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: var(--gray-500);
    margin-top: 8px;
    font-weight: 500;
}

.about-hero-decoration {
    position: absolute;
    top: 0;
    right: 0;
    width: 400px;
    height: 400px;
    pointer-events: none;
}

.decoration-circle {
    position: absolute;
    top: 20px;
    right: 80px;
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1) 0%, transparent 100%);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.decoration-circle-2 {
    position: absolute;
    bottom: 40px;
    right: 20px;
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.1) 0%, transparent 100%);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.values-section {
    padding: 60px 0;
    background: #fff;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header .section-tag {
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 16px;
}

.section-header p {
    font-size: 16px;
    color: var(--gray-500);
    max-width: 500px;
    margin: 0 auto;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.value-card {
    padding: 40px 32px;
    background: #fff;
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
    text-align: center;
}

.value-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.value-icon {
    width: 72px;
    height: 72px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    box-shadow: 0 8px 24px rgba(0, 102, 255, 0.3);
    transition: var(--transition);
}

.value-card:hover .value-icon {
    transform: scale(1.1);
}

.value-icon i {
    font-size: 32px;
    color: #fff;
}

.value-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.value-card p {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.7;
}

.features-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #f8faff 0%, #f0fff8 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    padding: 36px 28px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}

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

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: rgba(0, 102, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background: var(--gradient-2);
    box-shadow: 0 4px 16px rgba(0, 102, 255, 0.3);
}

.feature-icon i {
    font-size: 24px;
    color: var(--primary);
    transition: var(--transition);
}

.feature-card:hover .feature-icon i {
    color: #fff;
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.7;
}

.team-section {
    padding: 60px 0;
    background: #fff;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.team-card {
    background: #fff;
    border-radius: var(--radius-xl);
    padding: 36px 24px;
    text-align: center;
    border: 1px solid var(--gray-100);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.team-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-2);
    transform: scaleX(0);
    transition: var(--transition);
}

.team-card:hover::before {
    transform: scaleX(1);
}

.team-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.team-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, #0066ff 0%, #00d4aa 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 4px 16px rgba(0, 102, 255, 0.3);
    transition: var(--transition);
}

.team-card:hover .team-avatar {
    transform: scale(1.1);
}

.team-avatar i {
    font-size: 36px;
    color: #fff;
}

.team-card h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 6px;
}

.team-position {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 12px;
}

.team-card p {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: 20px;
}

.team-social {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.social-link {
    width: 36px;
    height: 36px;
    line-height: 36px;
    text-align: center;
    background: var(--gray-100);
    color: var(--gray-500);
    border-radius: 50%;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--gradient-2);
    color: #fff;
    transform: translateY(-2px);
}

.timeline-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #f8faff 0%, #e8f5ff 100%);
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 100%);
    transform: translateX(-50%);
    border-radius: 2px;
}

.timeline-items {
    position: relative;
    z-index: 2;
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 48px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-item-right {
    flex-direction: row-reverse;
}

.timeline-dot {
    position: relative;
    flex-shrink: 0;
}

.timeline-year {
    position: absolute;
    width: 72px;
    height: 72px;
    line-height: 72px;
    text-align: center;
    background: #fff;
    border: 3px solid var(--primary);
    color: var(--primary);
    font-size: 18px;
    font-weight: 800;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 4px 16px rgba(0, 102, 255, 0.3);
}

.timeline-card {
    width: calc(50% - 60px);
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.timeline-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.timeline-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.timeline-card p {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 16px;
}

.timeline-meta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.timeline-meta span {
    font-size: 13px;
    color: var(--gray-500);
    padding: 6px 14px;
    background: rgba(0, 102, 255, 0.06);
    border-radius: 20px;
}

.timeline-meta i {
    margin-right: 6px;
    color: var(--primary);
}

/* ================================================
   表单/按钮通用
   ================================================ */
.btn-primary,
.btn-outline {
    position: relative;
    z-index: 1;
}

/* ================================================
   响应式
   ================================================ */
@media (max-width: 1200px) {
    .sfb-footer .container {
        padding: 0 40px !important;
    }
    .footer-grid {
        gap: 36px;
    }
    .footer-brand {
        flex: 0 0 240px;
    }
}

@media (max-width: 1024px) {
    .sfb-footer .container {
        padding: 0 30px !important;
    }
    .hero-title { font-size: 48px; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .testimonials-grid { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid {
        flex-wrap: wrap;
        gap: 40px;
    }
    .footer-brand {
        flex: 0 0 100%;
    }
    .footer-col {
        flex: 0 0 calc(33.333% - 27px);
        min-width: auto;
    }
    .footer-col ul li a { white-space: normal; }
}

@media (max-width: 768px) {
    body { padding-top: 64px; font-size: 14px; }

    .sfb-navbar .container { height: 64px; padding-right: 140px; }
    .sfb-menu { display: none; }
    .sfb-mobile-toggle { display: block; }
    .sfb-actions .btn { padding: 8px 16px; font-size: 13px; }
    .sfb-actions .btn-get-ext { padding: 8px 14px; font-size: 12px; }
    .sfb-actions .btn-user-center { position: absolute; right: 0; top: 50%; transform: translateY(-50%); padding: 4px 4px 4px 10px; gap: 8px; }
    .sfb-actions .btn-user-center .uc-user-info { gap: 1px; }
    .sfb-actions .btn-user-center .uc-nickname { font-size: 13px; }
    .sfb-actions .btn-user-center .uc-role { font-size: 10px; }
    .sfb-actions .btn-user-center .uc-avatar { width: 32px; height: 32px; padding: 1.5px; }

    .hero-section { min-height: auto; padding: 0; }
    .hero-title { font-size: 32px; letter-spacing: -0.5px; }
    .hero-subtitle { font-size: 16px; margin-bottom: 32px; }
    .hero-actions { margin-bottom: 40px; }
    .hero-search { flex-direction: column; padding: 12px; }
    .hero-search input { width: 100%; }
    .hero-search .btn { width: 100%; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 16px; padding: 24px 0; }
    .stat-number { font-size: 32px; }

    .section-header { margin-bottom: 40px; }
    .section-header h2 { font-size: 28px; }
    .section-header p { font-size: 15px; }

    .features-section,
    .stats-section,
    .testimonials-section,
    .cta-section,
    .products-section { padding: 60px 0; }

    .features-grid { grid-template-columns: 1fr; gap: 16px; }
    .feature-card { padding: 30px 24px; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .stat-block { padding: 24px 16px; }
    .stat-value { font-size: 32px; }

    .testimonial-card { padding: 30px 24px; }

    .cta-wrap { padding: 50px 24px; border-radius: 24px; }
    .cta-wrap h2 { font-size: 28px; }
    .cta-wrap p { font-size: 15px; }

    .page-header { padding: 50px 0 40px; }
    .page-header h1 { font-size: 32px; }

    .products-grid { grid-template-columns: 1fr; }

    .news-grid { grid-template-columns: 1fr; }
    .news-featured { grid-column: span 1; }
    .news-featured-content { padding-right: 40px; }
    .news-featured-title { font-size: 22px; }

    .timeline-line { left: 28px; transform: none; }
    .timeline-dot { left: 28px; transform: translateX(-50%); }
    .timeline-card { width: calc(100% - 80px); padding: 24px; }
    .timeline-item:not(.timeline-item-right) .timeline-card { padding-right: 24px; }
    .timeline-item.timeline-item-right { flex-direction: row; }
    .timeline-item.timeline-item-right .timeline-card { margin-left: auto; margin-right: 0; padding-left: 24px; }
    .timeline-card h3 { font-size: 18px; }
    .timeline-meta { gap: 10px; }

    .sfb-footer .container {
        padding: 0 24px !important;
    }
    .sfb-footer { padding: 50px 0 0; }
    .footer-grid { flex-direction: column; gap: 32px; }
    .footer-brand { flex: 0 0 auto; }
    .footer-col { flex: 0 0 auto; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 26px; }
    .hero-stats { grid-template-columns: 1fr 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .container { padding: 0 16px; }
}

/* ================================================
   Feature Pages — Number Badge (公共序号标)
   ================================================ */
.sfb-num-badge {
    background: linear-gradient(135deg, #6366f1, #a855f7);
    color: #ffffff;
    font-weight: 700;
    border-radius: 8px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
    line-height: 1;
}

/* ================================================
   公共搜索框 + 搜索按钮
   核心：按钮固定 200px，input 用 calc 恒定宽度，
   彻底杜绝按钮文字长度对搜索框大小的影响
   ================================================ */
.sfb-search-form {
    max-width: 800px;
    margin: 0 auto 64px;
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    box-sizing: border-box;
}

.sfb-search-input {
    width: calc(100% - 212px);
    min-width: 0;
    height: 48px;
    padding: 0 16px;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    font-size: 15px;
    color: #111827;
    background: #ffffff;
    transition: border-color 0.2s ease;
    box-sizing: border-box;
}

.sfb-search-input::placeholder {
    color: #9ca3af;
}

.sfb-search-input:focus {
    outline: none;
    border-color: #6366f1;
}

.sfb-search-btn {
    flex-shrink: 0;
    width: 200px;
    height: 48px;
    padding: 0 12px;
    background: linear-gradient(135deg, #6366f1, #a855f7);
    color: #ffffff;
    border: none;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s ease, transform 0.2s ease;
    white-space: nowrap;
    box-sizing: border-box;
    text-align: center;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sfb-search-btn:hover {
    opacity: 0.92;
    transform: translateY(-1px);
}

.sfb-search-btn:active {
    transform: translateY(0);
}

@media (max-width: 640px) {
    .sfb-search-form {
        flex-direction: column;
        gap: 10px;
        margin-bottom: 40px;
    }
    .sfb-search-input {
        width: 100%;
    }
    .sfb-search-btn {
        width: 100%;
    }
}