/* 乐准教育 - 设计系统 */
:root {
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --turnitin-gradient: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    --uk-gradient: linear-gradient(135deg, #0891b2 0%, #22d3ee 100%);
    --ithenticate-gradient: linear-gradient(135deg, #7c3aed 0%, #a78bfa 100%);
    --weipu-gradient: linear-gradient(135deg, #ea580c 0%, #fb923c 100%);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background: #fff;
    padding-top: 64px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-100);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

/* Logo Styles */
.logo {
    display: flex;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-img {
    height: 40px;
    width: auto;
    display: block;
    object-fit: contain;
}

.nav {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-left: auto;
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-600);
    text-decoration: none;
    padding: 0.5rem 0;
    position: relative;
    transition: 0.2s;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-500);
    transition: 0.25s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-600);
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: 0.15s;
    border: none;
}

.btn-outline {
    background: transparent;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-outline:hover {
    background: var(--gray-50);
}

.btn-primary {
    background: var(--turnitin-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    transition: all 0.3s ease;
}

/* 移动端侧边栏导航菜单 */
.nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
}

.nav-overlay.active {
    display: block;
}

.nav.active {
    display: flex !important;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: auto;
    width: 280px;
    max-width: 80vw;
    height: 100vh;
    height: 100dvh;
    background: #fff;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
    flex-direction: column;
    align-items: stretch;
    padding: 80px 0 2rem;
    gap: 0;
    z-index: 1000;
    overflow-y: auto;
    overflow-x: hidden;
    animation: slideIn 0.3s ease forwards;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
    }

    to {
        transform: translateX(0);
    }
}

.nav.active .nav-link {
    display: block;
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--gray-800);
    border-bottom: 1px solid var(--gray-100);
    transition: all 0.2s;
    background: #fff;
    text-decoration: none;
    box-sizing: border-box;
}

.nav.active .nav-link:hover,
.nav.active .nav-link.active {
    color: var(--primary-600);
    background: var(--primary-50);
}

.nav.active .nav-link:last-child {
    border-bottom: none;
}

/* 汉堡菜单动画 */
.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Hero - 左右分栏设计 */
.hero {
    position: relative;
    padding: 160px 0 80px;
    overflow: hidden;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    opacity: 0.6;
    background-image:
        radial-gradient(#cbd5e1 1px, transparent 1px),
        radial-gradient(#cbd5e1 1px, transparent 1px);
    background-size: 20px 20px;
    background-position: 0 0, 10px 10px;
    mask-image: radial-gradient(circle at center, black 40%, transparent 100%);
    -webkit-mask-image: radial-gradient(circle at center, black 40%, transparent 100%);
}

.hero-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text {
    text-align: left;
    max-width: 540px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    border: 1px solid #bae6fd;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    color: #0284c7;
    margin-bottom: 2rem;
    box-shadow: 0 2px 4px rgba(2, 132, 199, 0.06);
}

.hero-title {
    font-size: 3.25rem;
    font-weight: 800;
    line-height: 1.15;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
    letter-spacing: -0.025em;
}

.gradient-text {
    background: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.hero-btns {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.btn-lg {
    padding: 0.875rem 2.25rem;
    font-size: 1rem;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary.btn-lg:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(37, 99, 235, 0.2);
}

.btn-outline.btn-lg:hover {
    background: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.hero-stats-row {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.stat-simple {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-simple strong {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1;
}

.stat-simple span {
    font-size: 0.8125rem;
    color: var(--gray-500);
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 32px;
    background: #e2e8f0;
}

/* 右侧视觉区域 */
.hero-visual {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-card-stack {
    position: relative;
    width: 300px;
    height: 380px;
    transform: perspective(1000px) rotateY(-8deg) rotateX(4deg);
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
}

.visual-card-stack:hover {
    transform: perspective(1000px) rotateY(-4deg) rotateX(2deg);
}


/* 视觉卡片 */
.visual-card {
    position: absolute;
    border-radius: 20px;
    background: #fff;
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.1),
        0 0 0 1px rgba(0, 0, 0, 0.05);
}

.card-1 {
    width: 280px;
    height: 380px;
    top: 10px;
    left: 20px;
    z-index: 3;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: transform 0.5s ease;
    border: 1px solid #fff;
}

.card-header {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 1rem;
}

.card-badge {
    font-size: 0.625rem;
    font-weight: 700;
    color: #0284c7;
    background: #e0f2fe;
    padding: 2px 8px;
    border-radius: 4px;
    text-transform: uppercase;
}

.paper-content {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.paper-title-line {
    width: 60%;
    height: 12px;
    background: #e2e8f0;
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

.paper-text {
    font-family: 'Georgia', serif;
    font-size: 0.8125rem;
    color: #334155;
    line-height: 1.6;
    text-align: justify;
}

.paper-text-faded {
    font-family: 'Georgia', serif;
    font-size: 0.75rem;
    color: #94a3b8;
    line-height: 1.6;
    text-align: justify;
    filter: blur(0.3px);
}

.highlight-word {
    background: rgba(14, 165, 233, 0.15);
    color: #0284c7;
    padding: 0 2px;
    border-radius: 2px;
}

.error-word {
    background: rgba(220, 38, 38, 0.1);
    color: #dc2626;
    padding: 0 2px;
    border-radius: 2px;
    text-decoration: underline wavy #dc2626;
}

.card-stack:hover .card-1 {
    transform: translateZ(20px);
}

.card-2 {
    width: 260px;
    height: 360px;
    top: 5px;
    right: -5px;
    background: #f8fafc;
    z-index: 2;
    transform: rotate(6deg);
    opacity: 0.9;
    border: 1px solid #e2e8f0;
}

.visual-circle {
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) translateZ(-50px);
    border-radius: 50%;
    z-index: 1;
}

.card-line {
    height: 12px;
    background: #f1f5f9;
    border-radius: 6px;
}



/* 扫描特效 */
.scan-beam-container {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    z-index: 10;
}

.scan-beam {
    position: absolute;
    top: -20%;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(180deg,
            transparent 0%,
            rgba(56, 189, 248, 0.1) 40%,
            rgba(56, 189, 248, 0.3) 90%,
            rgba(56, 189, 248, 0.6) 100%);
    filter: blur(4px);
    animation: scanMove 3.5s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.scan-line {
    position: absolute;
    top: -20%;
    left: 0;
    right: 0;
    height: 2px;
    background: #38bdf8;
    box-shadow: 0 0 10px #0ea5e9, 0 0 20px #0ea5e9;
    animation: scanMove 3.5s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes scanMove {
    0% {
        top: 0%;
        opacity: 0;
    }

    10% {
        opacity: 1;
    }

    90% {
        opacity: 1;
    }

    100% {
        top: 100%;
        opacity: 0;
    }
}

.scan-status {
    position: absolute;
    bottom: 1.5rem;
    left: 1.5rem;
    right: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: #0ea5e9;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.9);
    padding: 0.5rem;
    border-radius: 6px;
    border: 1px solid #e0f2fe;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(4px);
    z-index: 20;
}

.status-dot {
    width: 6px;
    height: 6px;
    background: #0ea5e9;
    border-radius: 50%;
    box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.2);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(14, 165, 233, 0.7);
    }

    70% {
        transform: scale(1);
        box-shadow: 0 0 0 4px rgba(14, 165, 233, 0);
    }

    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(14, 165, 233, 0);
    }
}

/* 查重入口区域 - 重新设计 */
.services {
    padding: 60px 0;
    background: linear-gradient(180deg, #e0f2fe 0%, #f0f9ff 50%, #fff 100%);
}

.entry-title {
    text-align: center;
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 2.5rem;
}

.entry-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
    margin-bottom: 1rem;
}

/* 卡片基础样式 */
.entry-card {
    position: relative;
    padding: 1.25rem 1.25rem 1.25rem 1.5rem;
    text-align: left;
    display: flex;
    flex-direction: column;
    border-radius: 8px;
    transition: all 0.25s ease;
    overflow: hidden;
}

/* 左边绿色/橙色条 */
.entry-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    border-radius: 8px 0 0 8px;
}

.entry-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

/* 绿色卡片 */
.green-cards {
    border-radius: 0;
    overflow: visible;
}

.green-card {
    background: linear-gradient(180deg, #f0fdf4 0%, #ecfdf5 100%);
    border: 1px solid #d1fae5;
    box-shadow: 0 2px 8px rgba(34, 197, 94, 0.08);
}

.green-card::before {
    background: linear-gradient(180deg, #22c55e 0%, #16a34a 100%);
}

.green-card:hover {
    border-color: #86efac;
    background: linear-gradient(180deg, #ecfdf5 0%, #dcfce7 100%);
}

/* 白色卡片 */
.white-cards {
    border-radius: 0;
    overflow: visible;
    border: none;
    border-top: none;
}

.white-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.white-card::before {
    background: linear-gradient(180deg, #22c55e 0%, #16a34a 100%);
}

.white-card:hover {
    border-color: #d1d5db;
    background: #fafafa;
}

/* Logo样式 */
.entry-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.875rem;
    min-height: 28px;
    flex-wrap: wrap;
}

.logo-badge {
    font-weight: 700;
    font-size: 0.9375rem;
}

.logo-badge.red {
    color: #dc2626;
}

.logo-text-sm {
    font-size: 0.8125rem;
    color: var(--gray-800);
    font-weight: 600;
}

.logo-text-lg {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-900);
}

.logo-icon-circle {
    font-size: 1.5rem;
}

.green-circle {
    color: #22c55e;
}

.logo-vip {
    font-weight: 700;
    font-size: 1rem;
    color: #dc2626;
    letter-spacing: -0.5px;
}

.vip-cs {
    color: #22c55e;
    font-size: 0.75rem;
    vertical-align: super;
}

.logo-wf {
    font-size: 1rem;
    font-weight: 700;
    color: #0ea5e9;
    border: 2px solid #0ea5e9;
    padding: 1px 4px;
    line-height: 1;
}

.logo-pp {
    font-size: 1.125rem;
    color: #2563eb;
    font-weight: 600;
}

/* 第二行Logo样式 */
.logo-turnitin {
    font-size: 1.125rem;
    font-weight: 700;
    color: #dc2626;
    font-style: italic;
}

.turnitin-arrow {
    color: #22c55e;
    font-style: normal;
}

.logo-crosscheck {
    font-size: 1rem;
    font-weight: 600;
    color: #dc2626;
}

.cc-check {
    color: #22c55e;
}

.logo-ithenticate {
    font-size: 1rem;
    font-weight: 600;
    color: #dc2626;
}

.logo-grammarly {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-700);
}

.gram-g {
    display: inline-flex;
    width: 20px;
    height: 20px;
    background: #22c55e;
    color: white;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    margin-right: 4px;
}

.logo-papereasy {
    font-size: 1rem;
    color: #0ea5e9;
}

.pe-text {
    font-weight: 600;
    color: var(--gray-800);
}

/* 描述文字 */
.entry-desc {
    font-size: 0.8125rem;
    color: var(--gray-600);
    line-height: 1.65;
    flex: 1;
    margin-bottom: 1rem;
}

/* 按钮样式 */
.entry-btn {
    width: 100%;
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.green-btn {
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    box-shadow: 0 2px 8px rgba(34, 197, 94, 0.25);
}

.green-btn:hover {
    background: linear-gradient(135deg, #16a34a 0%, #15803d 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(34, 197, 94, 0.35);
}

.orange-btn {
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    box-shadow: 0 2px 8px rgba(249, 115, 22, 0.25);
}

.orange-btn:hover {
    background: linear-gradient(135deg, #ea580c 0%, #c2410c 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.35);
}

/* 温馨提示区域 - 优化设计 */
.tips-section {
    margin-top: 1.5rem;
    background: linear-gradient(135deg, #1e3a5f 0%, #0f172a 100%);
    border-radius: 12px;
    padding: 1.5rem 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    position: relative;
    overflow: hidden;
}

.tips-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #22c55e, #0ea5e9, #8b5cf6);
}

.tips-icon {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.tips-icon-img {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #fef08a 0%, #fde047 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 12px rgba(254, 240, 138, 0.3);
}

.tips-label {
    color: #fef08a;
    font-weight: 700;
    font-size: 1rem;
    white-space: nowrap;
}

.tips-content {
    flex: 1;
}

.tips-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
    line-height: 1.75;
}

/* 对比说明区域 - 统一风格 */
.comparison-section {
    padding: 60px 0;
    background: linear-gradient(180deg, #f0f9ff 0%, #e0f2fe 50%, #f0f9ff 100%);
}

.comparison-title {
    text-align: center;
    font-size: 1.75rem;
    font-weight: 700;
    color: #dc2626;
    margin-bottom: 2.5rem;
}

.comparison-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.compare-card {
    background: #fff;
    border-radius: 16px;
    padding: 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid #e0f2fe;
}

.compare-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.compare-card-header {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.compare-card-header.purple {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

.compare-card-header.orange {
    background: linear-gradient(135deg, #fb923c 0%, #f97316 100%);
}

.compare-card-header.red {
    background: linear-gradient(135deg, #f87171 0%, #dc2626 100%);
}

.compare-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.25);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
}

.compare-card-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    margin: 0;
}

.compare-card-desc {
    padding: 1.25rem 1.5rem;
    font-size: 0.9375rem;
    color: var(--gray-600);
    line-height: 1.7;
    margin: 0;
}

.compare-card-tag {
    margin: 0 1.5rem 1.5rem;
    padding: 0.5rem 1rem;
    background: var(--gray-100);
    border-radius: 50px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--gray-600);
    display: inline-block;
}

.comparison-summary {
    background: #fff;
    border-radius: 16px;
    padding: 1.5rem 2rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border: 1px solid #e0f2fe;
}

.summary-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.comparison-summary p {
    font-size: 0.9375rem;
    color: var(--gray-700);
    line-height: 1.8;
    margin: 0;
}

.comparison-summary strong {
    color: var(--gray-900);
}

.comparison-summary .highlight {
    background: linear-gradient(135deg, #fef3c7 0%, #fef9c3 100%);
    color: #b45309;
    padding: 0.125rem 0.5rem;
    border-radius: 4px;
    font-weight: 600;
}

/* 论文检测科普知识区域 */
.knowledge-section {
    padding: 60px 0;
    background: #f8fafc;
}

.knowledge-title {
    text-align: center;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 2.5rem;
}

.knowledge-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.knowledge-card {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: #fff;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    transition: all 0.2s ease;
}

.knowledge-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.knowledge-icon {
    flex-shrink: 0;
}

.q-mark {
    display: flex;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
    color: white;
    font-size: 1.25rem;
    font-weight: 700;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
}

.knowledge-content {
    flex: 1;
}

.knowledge-question {
    font-size: 1rem;
    font-weight: 600;
    color: #0284c7;
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: color 0.2s;
}

.knowledge-question:hover {
    color: #0369a1;
    text-decoration: underline;
}

.knowledge-answer {
    font-size: 0.875rem;
    color: var(--gray-600);
    line-height: 1.7;
}

/* 国内外知名论文查重系统 */
.brands-section {
    padding: 0;
}

.brands-block {
    padding: 40px 0;
}

.brands-block.domestic {
    border-bottom: 1px solid #e2e8f0;
}

.brands-block.international {
    background: #fff;
}

.brands-title {
    text-align: center;
    font-size: 1.25rem;
    font-weight: 600;
    color: #dc2626;
    margin-bottom: 2rem;
}

.brands-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
}

.brand-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem 1rem;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.domestic .brand-item {
    background: #fff;
}

.international .brand-item {
    background: #fff;
    border-color: #e2e8f0;
}

.brand-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* 品牌Logo样式 */
.brand-cnki {
    font-size: 1rem;
    font-weight: 700;
    color: #dc2626;
}

.cnki-i {
    color: #f97316;
}

.cnki-text {
    font-size: 0.875rem;
    color: var(--gray-700);
    margin-left: 4px;
    font-weight: 500;
}

.brand-ywj {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-900);
}

.ywj-icon {
    color: #22c55e;
}

.brand-vpcs {
    font-size: 1rem;
    font-weight: 700;
    color: #dc2626;
}

.vpcs-cs {
    color: #22c55e;
    font-size: 0.75rem;
    vertical-align: super;
}

.vpcs-text {
    font-size: 0.6875rem;
    color: var(--gray-500);
    display: block;
    font-weight: 400;
    margin-top: 2px;
}

.brand-wf {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
}

.wf-icon {
    color: #0ea5e9;
    border: 1px solid #0ea5e9;
    padding: 1px 3px;
    font-size: 0.75rem;
    margin-right: 4px;
}

.brand-pp {
    font-size: 1rem;
    font-weight: 600;
    color: #2563eb;
}

/* 国外品牌样式 */
.brand-turnitin {
    font-size: 1.125rem;
    font-weight: 700;
    color: #dc2626;
    font-style: italic;
}

.tt-arrow {
    color: #22c55e;
    font-style: normal;
}

.brand-crosscheck {
    font-size: 1rem;
    font-weight: 600;
    color: #dc2626;
}

.cc-v {
    color: #22c55e;
}

.brand-ithenticate {
    font-size: 1rem;
    font-weight: 600;
    color: #dc2626;
}

.brand-grammarly {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-700);
}

.gram-icon {
    display: inline-flex;
    width: 20px;
    height: 20px;
    background: #22c55e;
    color: white;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    margin-right: 4px;
}

.brand-papereasy {
    font-size: 1rem;
    font-weight: 600;
    color: #0ea5e9;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: var(--primary-100);
    color: var(--primary-700);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.125rem;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.service-card {
    position: relative;
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: 20px;
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
    overflow: visible;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: var(--gray-100);
}

/* 图标容器 - 圆形渐变背景 */
.card-icon-wrapper {
    width: 72px;
    height: 72px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.card-icon-wrapper::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    padding: 2px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.2));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

.card-icon-svg {
    width: 36px;
    height: 36px;
}

/* Turnitin 蓝色 */
.turnitin-wrapper {
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    color: #2563eb;
}

/* UK版 青色 */
.uk-wrapper {
    background: linear-gradient(135deg, #cffafe 0%, #a5f3fc 100%);
    color: #0891b2;
}

/* iThenticate 紫色 */
.ithenticate-wrapper {
    background: linear-gradient(135deg, #ede9fe 0%, #ddd6fe 100%);
    color: #7c3aed;
}

/* 维普 橙色 */
.weipu-wrapper {
    background: linear-gradient(135deg, #ffedd5 0%, #fed7aa 100%);
    color: #ea580c;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.card-description {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 1.25rem;
    line-height: 1.6;
}

.card-features {
    list-style: none;
    text-align: left;
    margin-bottom: 1.5rem;
    padding: 0;
}

.card-features li {
    font-size: 0.8125rem;
    color: var(--gray-600);
    padding: 0.375rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.check-icon {
    color: var(--gray-400);
    font-weight: 500;
}

.card-btn {
    width: 100%;
    padding: 0.875rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-turnitin {
    background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
}

.btn-uk {
    background: linear-gradient(135deg, #06b6d4 0%, #22d3ee 100%);
}

.btn-ithenticate {
    background: linear-gradient(135deg, #8b5cf6 0%, #a78bfa 100%);
}

.btn-weipu {
    background: linear-gradient(135deg, #f97316 0%, #fb923c 100%);
}

.card-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

/* Features */
.features {
    padding: 100px 0;
    background: var(--gray-50);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-item {
    background: #fff;
    padding: 2rem;
    border-radius: var(--radius-xl);
    text-align: center;
    transition: 0.25s;
    border: 1px solid var(--gray-100);
}

.feature-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1.25rem;
    background: var(--primary-100);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-600);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
}

.feature-item h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.feature-item p {
    font-size: 0.9375rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* Process */
.process {
    padding: 100px 0;
    background: #fff;
}

.process-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.process-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    flex: 1;
    max-width: 280px;
}

.step-number {
    width: 80px;
    height: 80px;
    background: var(--turnitin-gradient);
    color: white;
    font-size: 1.75rem;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-lg);
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.step-content p {
    font-size: 0.9375rem;
    color: var(--gray-500);
}

.process-connector {
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-400), var(--primary-200));
    margin-bottom: 4rem;
}

/* 新闻资讯区域 - 统一风格 */
.news-section {
    padding: 60px 0;
    background: linear-gradient(180deg, #f0f9ff 0%, #e0f2fe 50%, #f0f9ff 100%);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.news-column {
    background: #fff;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
    border: 1px solid #e0f2fe;
    position: relative;
    overflow: hidden;
}

.news-column::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #f97316, #fb923c);
}

.news-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1.25rem;
    padding-bottom: 0;
    border-bottom: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.news-title::before {
    content: '';
    width: 4px;
    height: 20px;
    background: linear-gradient(180deg, #f97316, #ea580c);
    border-radius: 2px;
}

.news-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem 0;
}

.news-list li {
    padding: 0.875rem 0;
    border-bottom: 1px solid #f1f5f9;
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    transition: all 0.2s ease;
}

.news-list li:hover {
    background: #fafafa;
    margin: 0 -0.5rem;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    border-radius: 4px;
}

.news-list li::before {
    content: '■';
    color: #f97316;
    font-size: 0.5rem;
    line-height: 1.9;
    flex-shrink: 0;
}

.news-list li:last-child {
    border-bottom: none;
}

.news-list a {
    font-size: 0.9375rem;
    color: var(--gray-700);
    text-decoration: none;
    transition: color 0.2s;
    line-height: 1.6;
}

.news-list a:hover {
    color: #f97316;
}

.news-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.75rem;
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(249, 115, 22, 0.25);
}

.news-more-btn:hover {
    background: linear-gradient(135deg, #ea580c 0%, #c2410c 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.35);
}

/* Contact */
.contact {
    padding: 100px 0;
    background: linear-gradient(180deg, #fff, var(--primary-50));
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.contact-info h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.contact-info>p {
    font-size: 1.125rem;
    color: var(--gray-500);
    margin-bottom: 2rem;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.method-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-100);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-600);
}

.method-icon svg {
    width: 24px;
    height: 24px;
}

.method-label {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-500);
}

.method-value {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
}

.cta-card {
    background: var(--turnitin-gradient);
    padding: 3rem;
    border-radius: var(--radius-2xl);
    text-align: center;
    color: white;
    box-shadow: var(--shadow-2xl);
}

.cta-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.cta-card p {
    opacity: 0.9;
    margin-bottom: 1.5rem;
}

.cta-card .btn {
    background: white;
    color: var(--primary-600);
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: white;
    padding: 60px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 4rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--gray-700);
}

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-brand .logo-text {
    color: white;
}

.footer-brand>p {
    color: var(--gray-400);
    font-size: 0.9375rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    color: white;
}

.footer-column a {
    display: block;
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.9375rem;
    padding: 0.375rem 0;
    transition: 0.15s;
}

.footer-column a:hover {
    color: white;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
}

.footer-bottom p {
    color: var(--gray-500);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .entry-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .tips-section {
        flex-direction: column;
        text-align: center;
    }

    .tips-icon {
        flex-direction: row;
    }

    .comparison-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .turnitin-demo {
        width: 100%;
        max-width: 360px;
    }

    .brands-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {

    .nav,
    .header-actions {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    /* Logo 移动端适配 */
    .logo-img {
        height: 40px;
    }


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

    .hero-subtitle {
        font-size: 1rem;
    }

    /* Hero区域手机端优化 */
    .hero {
        padding: 100px 0 60px;
        background: linear-gradient(180deg, #f0f9ff 0%, #e0f2fe 100%);
    }

    .hero-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .hero-text {
        text-align: center;
        max-width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .hero-title {
        font-size: 2rem;
        margin-bottom: 1rem;
        line-height: 1.25;
    }

    .hero-description {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .hero-btns {
        justify-content: center;
        flex-direction: column;
        width: 100%;
        max-width: 320px;
        margin: 0 auto 2.5rem;
        gap: 0.75rem;
    }

    .btn-lg {
        width: 100%;
        padding: 0.875rem 0;
    }

    .hero-stats-row {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
        width: 100%;
        padding-top: 1.5rem;
    }

    .stat-simple {
        min-width: 80px;
    }

    .stat-simple strong {
        font-size: 1.25rem;
    }

    .stat-divider {
        height: 24px;
    }

    .hero-visual {
        height: 340px;
        overflow: visible;
        margin-top: -1rem;
    }

    .visual-card-stack {
        transform: scale(0.9) !important;
        width: 280px;
        height: 360px;
        margin: 0 auto;
    }

    .card-1 {
        width: 100%;
        height: 100%;
        top: 0;
        left: 0;
        padding: 1.25rem;
    }

    .card-2 {
        display: block;
        width: 90%;
        height: 95%;
        top: 10px;
        right: -10px;
        transform: rotate(4deg);
    }

    .visual-circle {
        width: 280px;
        height: 280px;
    }

    /* 查重入口卡片 - 手机1列 */
    .entry-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .entry-card {
        padding: 1rem 1rem 1rem 1.25rem;
    }

    .entry-title {
        font-size: 1.75rem;
    }

    /* 对比区域 */
    .comparison-title {
        font-size: 1.25rem;
    }

    .comparison-content {
        padding: 1.5rem;
    }

    .compare-item {
        flex-direction: column;
        gap: 0.25rem;
    }

    .compare-label {
        min-width: auto;
    }

    /* 知识科普 */
    .knowledge-grid {
        grid-template-columns: 1fr;
    }

    .knowledge-card {
        padding: 1rem;
    }

    .knowledge-title {
        font-size: 1.5rem;
    }

    /* 品牌展示 */
    .brands-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .brand-item {
        padding: 1rem 0.5rem;
    }

    .brands-title {
        font-size: 1rem;
    }

    /* 平台优势 */
    .features-grid {
        grid-template-columns: 1fr;
    }

    .features {
        padding: 60px 0;
    }

    /* 流程 */
    .process-steps {
        flex-direction: column;
    }

    .process-connector {
        width: 2px;
        height: 40px;
        margin: 0;
    }

    .process {
        padding: 60px 0;
    }

    /* 新闻资讯 */
    .news-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .news-column {
        padding: 1.5rem;
    }

    /* 温馨提示 */
    .tips-section {
        flex-direction: column;
        text-align: center;
        padding: 1.25rem;
        gap: 1rem;
    }

    .tips-icon {
        flex-direction: row;
        justify-content: center;
    }

    .tips-content p {
        font-size: 0.8125rem;
        text-align: left;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .section-header {
        margin-bottom: 2rem;
    }

    /* 对比区域响应式 */
    .comparison-cards {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .compare-card-header {
        padding: 1.25rem;
    }

    .compare-card-desc {
        padding: 1rem 1.25rem;
    }

    .compare-card-tag {
        margin: 0 1.25rem 1.25rem;
    }

    .comparison-summary {
        flex-direction: column;
        padding: 1.25rem;
        text-align: center;
    }

    .comparison-title {
        font-size: 1.25rem;
    }

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

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-bottom {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    /* container边距 */
    .container {
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 90px 0 40px;
    }

    .hero-badge {
        padding: 0.375rem 0.75rem;
        font-size: 0.75rem;
    }

    .hero-title {
        font-size: 1.5rem;
        line-height: 1.25;
    }

    .hero-description {
        font-size: 0.875rem;
        margin-bottom: 1.25rem;
    }

    .hero-stats {
        padding: 1rem 0.75rem;
        gap: 0;
    }

    .stat-number {
        font-size: 1.25rem;
    }

    .stat-label {
        font-size: 0.6875rem;
    }

    .stat-item:not(:last-child)::after {
        height: 24px;
    }

    /* 按钮组 */
    .hero-buttons {
        flex-direction: column;
        gap: 0.75rem;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    /* 卡片更紧凑 */
    .entry-card {
        padding: 0.875rem 0.875rem 0.875rem 1rem;
    }

    .entry-desc {
        font-size: 0.75rem;
    }

    .entry-btn {
        padding: 0.5rem;
        font-size: 0.8125rem;
    }

    /* 品牌展示单列 */
    .brands-grid {
        grid-template-columns: 1fr;
    }

    /* 对比区域 */
    .turnitin-demo {
        max-width: 100%;
    }

    .demo-body {
        flex-direction: column;
    }

    .demo-detail {
        width: 100%;
    }

    /* 流程步骤 */
    .step-number {
        width: 48px;
        height: 48px;
        font-size: 1rem;
    }

    /* 页脚 */
    .footer-links {
        grid-template-columns: 1fr;
    }

    .footer-brand h3 {
        font-size: 1.125rem;
    }
}

/* =========================================
   News Page Specific Styles
   ========================================= */
/* 页面标题区 */
.news-header-bg {
    background-color: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
    padding: 40px 0;
    margin-bottom: 40px;
    text-align: center;
}

.news-page-title {
    font-size: 2rem;
    color: #1e293b;
    font-weight: 700;
    margin: 0;
}

.news-page-subtitle {
    margin-top: 10px;
    color: #64748b;
    font-size: 1rem;
}

/* 布局容器：双栏 */
.news-layout {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 80px;
    display: grid;
    grid-template-columns: 3fr 1fr;
    /* 左3 右1 */
    gap: 40px;
}

/* 左侧：列表区 */
.list-header-bar {
    background: white;
    padding: 15px 0;
    border-bottom: 2px solid #e2e8f0;
    font-size: 1.25rem;
    color: #1e293b;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    font-weight: 700;
}

.list-header-bar::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 24px;
    background: #2563eb;
    margin-right: 12px;
    border-radius: 3px;
}

.list-header-bar span {
    color: #94a3b8;
    font-size: 1rem;
    margin-left: 10px;
    font-weight: normal;
}

/* 新闻列表项 (继承优化) */
.news-item {
    display: flex;
    gap: 2rem;
    padding: 2rem 0;
    border-bottom: 1px dashed #cbd5e1;
    transition: transform 0.2s;
}

.news-item:hover {
    transform: translateY(-3px);
}

.news-thumb {
    width: 240px;
    height: 160px;
    flex-shrink: 0;
    border-radius: 8px;
    overflow: hidden;
    background: #f1f5f9;
}

.news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.news-item:hover .news-thumb img {
    transform: scale(1.05);
}

.news-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.news-title {
    font-size: 1.35rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.news-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s;
}

.news-title a:hover {
    color: #2563eb;
}

.news-meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    color: #94a3b8;
    font-size: 0.85rem;
}

.news-tag {
    background: #f0f9ff;
    color: #0369a1;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
}

.news-summary {
    color: #475569;
    line-height: 1.7;
    font-size: 0.95rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ------------------- 右侧栏样式 ------------------- */
.sidebar-widget {
    margin-bottom: 2rem;
}

.widget-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e2e8f0;
}

/* 侧边导航菜单 */
.side-nav-menu {
    list-style: none;
    padding: 0;
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    overflow: hidden;
}

.side-nav-item {
    border-bottom: 1px solid #f1f5f9;
}

.side-nav-item:last-child {
    border-bottom: none;
}

.side-nav-link {
    display: flex;
    justify-content: space-between;
    padding: 14px 20px;
    color: #475569;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
}

.side-nav-link:hover,
.side-nav-link.active {
    background: #f8fafc;
    color: #2563eb;
    padding-left: 24px;
}

.side-nav-link.active {
    border-left: 4px solid #2563eb;
    background: white;
}

/* 强力入口 CTA 卡片 */
.cta-card {
    border-radius: 12px;
    padding: 1.5rem;
    color: white;
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
    text-align: center;
    display: block;
    text-decoration: none;
}

.cta-card:hover {
    transform: translateY(-5px);
}

.cta-check {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
}

.cta-report {
    background: linear-gradient(135deg, #0f172a 0%, #334155 100%);
}

.cta-icon {
    margin-bottom: 1rem;
    opacity: 0.9;
}

.cta-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.cta-desc {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.cta-btn {
    background: rgba(255, 255, 255, 0.2);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
}

/* 分页 */
.pagination {
    margin-top: 3rem;
    display: flex;
    justify-content: center;
    gap: 0.5rem;
}

.page-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    color: #64748b;
    text-decoration: none;
    transition: all 0.2s;
}

.page-link:hover,
.page-link.active {
    background: #1e293b;
    color: white;
    border-color: #1e293b;
}

@media (max-width: 900px) {
    .news-layout {
        grid-template-columns: 1fr;
    }

    .news-item {
        flex-direction: column;
        gap: 1rem;
    }

    .news-thumb {
        width: 100%;
        height: 200px;
    }
}

/* =========================================
   Article Page Specific Styles
   ========================================= */
.article-container {
    max-width: 1100px;
    margin: 40px auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 3fr 1fr;
    /* 主内容 : 侧边栏 = 3:1 */
    gap: 40px;
}

/* ------------------- Article Main ------------------- */
.article-main {
    background: white;
    /* 纯白背景不如直接融入页面显得更现代，或者加个内衬 */
}

.breadcrumb {
    font-size: 0.9rem;
    color: #64748b;
    margin-bottom: 2rem;
}

.breadcrumb a {
    color: #64748b;
    text-decoration: none;
}

.breadcrumb a:hover {
    color: #2563eb;
}

.article-header {
    margin-bottom: 2.5rem;
    border-bottom: 1px solid #e2e8f0;
    padding-bottom: 2rem;
}

.article-title {
    font-size: 2.2rem;
    color: #1e293b;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 1.5rem;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    color: #94a3b8;
    font-size: 0.9rem;
    align-items: center;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

/* Content Typography */
.article-content {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #334155;
}

.article-content p {
    margin-bottom: 1.5rem;
    text-align: justify;
}

.article-content h2 {
    font-size: 1.5rem;
    color: #1e293b;
    margin: 2.5rem 0 1.25rem;
    font-weight: 700;
    border-left: 4px solid #2563eb;
    padding-left: 1rem;
}

.article-content h3 {
    font-size: 1.25rem;
    color: #1e293b;
    margin: 2rem 0 1rem;
    font-weight: 600;
}

.article-content ul {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.article-content li {
    margin-bottom: 0.5rem;
}

.highlight-box {
    background: #f0f9ff;
    border-left: 4px solid #3b82f6;
    padding: 1.5rem;
    margin: 2rem 0;
    color: #0c4a6e;
    font-size: 0.95rem;
    border-radius: 0 8px 8px 0;
}

/* ------------------- Sidebar ------------------- */
.sidebar-widget {
    margin-bottom: 2.5rem;
}

.widget-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1.25rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
}

/* Related List */
.related-list {
    list-style: none;
    padding: 0;
}

.related-item {
    margin-bottom: 1rem;
    display: flex;
    gap: 10px;
}

.related-index {
    color: #cbd5e1;
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
    width: 20px;
}

.related-item:nth-child(1) .related-index {
    color: #ef4444;
}

.related-item:nth-child(2) .related-index {
    color: #f97316;
}

.related-item:nth-child(3) .related-index {
    color: #facc15;
}

.related-link {
    font-size: 0.95rem;
    color: #475569;
    text-decoration: none;
    line-height: 1.5;
    transition: color 0.2s;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-link:hover {
    color: #2563eb;
}

/* Category List */
.category-list {
    list-style: none;
    padding: 0;
}

.category-list li {
    border-bottom: 1px dashed #e2e8f0;
}

.category-list li:last-child {
    border-bottom: none;
}

.category-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 5px;
    color: #475569;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 0.95rem;
}

.category-link:hover {
    color: #2563eb;
    background: #f8fafc;
    padding-left: 10px;
    /* 悬停时轻微右移 */
}

.cat-count {
    background: #f1f5f9;
    color: #94a3b8;
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 10px;
}

/* Tag Cloud */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag-link {
    background: #f1f5f9;
    color: #64748b;
    padding: 4px 10px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.tag-link:hover {
    background: #e2e8f0;
    color: #334155;
}

/* Ad Card */
.ad-card {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    padding: 2rem;
    text-align: center;
    border-radius: 12px;
    color: white;
}

.ad-btn {
    background: #facc15;
    color: #1e3a8a;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 800;
    display: inline-block;
    margin-top: 1rem;
    transition: transform 0.2s;
}

.ad-btn:hover {
    transform: scale(1.05);
}

@media (max-width: 900px) {
    .article-container {
        grid-template-columns: 1fr;
    }
}

/* =========================================
   Download Page Specific Styles
   ========================================= */
.dl-hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
    padding: 60px 0 160px;
    text-align: center;
    color: white;
    position: relative;
    clip-path: polygon(0 0, 100% 0, 100% 85%, 0 100%);
    margin-bottom: -100px;
}

.dl-container {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
}

.dl-card {
    background: white;
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    text-align: center;
}

.dl-input-group {
    margin-bottom: 2rem;
    text-align: left;
}

.dl-label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: #334155;
    font-size: 0.95rem;
}

.dl-input {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s;
    outline: none;
    box-sizing: border-box;
}

.dl-input:focus {
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.dl-btn {
    width: 100%;
    padding: 1rem;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 10px 15px -3px rgba(37, 99, 235, 0.3);
}

.dl-btn:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
}

/* Order Guide */
.order-guide {
    margin-top: 4rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.guide-box {
    background: #f8fafc;
    border-radius: 12px;
    padding: 2rem;
    border: 1px solid #e2e8f0;
}

.guide-title {
    font-weight: 700;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* FAQ */
.dl-faq {
    margin-top: 5rem;
    padding-bottom: 5rem;
}

.dl-faq h3 {
    text-align: center;
    margin-bottom: 2rem;
    color: #1e293b;
}

.faq-item {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    border: 1px solid #f1f5f9;
}

.faq-q {
    color: #1e293b;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.faq-a {
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.6;
}

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

    .dl-card {
        padding: 2rem;
    }
}

/* 新增样式 from lower block */
.guide-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.guide-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.guide-header {
    padding: 1rem;
    font-weight: 700;
    color: white;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-wx {
    background: #07c160;
}

.header-zfb {
    background: #1677ff;
}

.guide-body {
    padding: 1.5rem;
}

.guide-step {
    margin-bottom: 0.8rem;
    font-size: 0.95rem;
    color: #475569;
}

.guide-img-box {
    margin-top: 1.5rem;
    background: #f1f5f9;
    border-radius: 8px;
    overflow: hidden;
    border: 1px dashed #cbd5e1;
}

.guide-img-box img {
    width: 100%;
    height: auto;
    display: block;
}

/* 须知卡片样式 */
.notice-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.notice-card {
    background: #f8fafc;
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    transition: all 0.3s;
}

.notice-card:hover {
    background: white;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    transform: translateY(-3px);
}

.notice-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.notice-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 0.8rem;
}

.notice-content {
    font-size: 0.9rem;
    color: #64748b;
    line-height: 1.6;
    text-align: justify;
}

@media (max-width: 900px) {
    .notice-grid {
        grid-template-columns: 1fr 1fr;
    }
}

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

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

/* =========================================
   About Page Specific Styles
   ========================================= */
.about-hero {
    padding: 140px 0 100px;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.4)), url('images/about_hero_bg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    text-align: center;
    position: relative;
    z-index: 1;
    color: white;
    /* Ensure base color is white */
}

.about-title {
    font-size: 3rem;
    /* Increase size for 'atmospheric' feel */
    color: #ffffff;
    margin-bottom: 1.5rem;
    font-weight: 800;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.about-hero p {
    font-size: 1.25rem;
    color: #e2e8f0;
    /* Light gray for readable subtext */
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.about-section {
    padding: 80px 0;
    background: white;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-content h2 {
    font-size: 2rem;
    color: #1e293b;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.about-content p {
    color: #475569;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    text-align: justify;
}

.about-image {
    background: transparent;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    height: auto;
}

.about-img-real {
    width: 100%;
    max-width: 500px;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 20px 30px rgba(37, 99, 235, 0.15));
    transition: transform 0.5s ease;
}

.about-img-real:hover {
    transform: translateY(-10px);
}

/* 价值点 */
.values-section {
    padding: 2rem 0 0;
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.value-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.value-icon {
    width: 50px;
    height: 50px;
    background: #eff6ff;
    color: #3b82f6;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.value-text h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 0.5rem;
}

.value-text p {
    font-size: 0.9rem;
    color: #64748b;
    line-height: 1.5;
}

/* 联系方式 */
.contact-section {
    padding: 80px 0;
    background: #1e293b;
    color: white;
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.contact-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 16px;
    transition: all 0.3s ease;
}

.contact-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.cc-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    display: block;
}

.cc-label {
    font-size: 0.9rem;
    color: #94a3b8;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.cc-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: white;
    word-break: break-all;
}

.company-info {
    text-align: center;
    margin-bottom: 3rem;
}

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

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

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

/* =========================================
   Modern Value Cards (Minimalist & Integrated)
   ========================================= */
.value-grid-modern {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem 2.5rem;
    /* 增加水平间距，视觉更开阔 */
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #f1f5f9;
    /* 增加一条极细的分隔线，连接上下 */
}

.value-card-modern {
    background: transparent;
    /* 默认透明，融入背景 */
    border: 1px solid transparent;
    border-radius: 12px;
    padding: 1rem;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    position: relative;
    left: -1rem;
    /* 稍微向左偏移以抵消padding，保持视觉对齐 */
    width: calc(100% + 2rem);
}

.value-card-modern:hover {
    background: #ffffff;
    border-color: #f1f5f9;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.08);
    /* 悬浮时才出现质感 */
    transform: translateY(-3px);
    z-index: 10;
}

.vcm-header {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.vcm-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.3s;
}

/* Icon Colors - 稍微加深一点背景，提升质感 */
.icon-blue {
    background: #eff6ff;
    color: #3b82f6;
}

.icon-indigo {
    background: #eef2ff;
    color: #6366f1;
}

.icon-green {
    background: #f0fdf4;
    color: #22c55e;
}

.icon-orange {
    background: #fff7ed;
    color: #f97316;
}

.value-card-modern:hover .icon-blue {
    background: #3b82f6;
    color: white;
}

.value-card-modern:hover .icon-indigo {
    background: #6366f1;
    color: white;
}

.value-card-modern:hover .icon-green {
    background: #22c55e;
    color: white;
}

.value-card-modern:hover .icon-orange {
    background: #f97316;
    color: white;
}

.vcm-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #1e293b;
    margin: 0;
}

/* =========================================
   Sub-Navigation Component
   ========================================= */
.sub-nav-bar {
    background: #ffffff;
    border-bottom: 1px solid #e2e8f0;
    position: sticky;
    /* Optional: make it sticky if desired, or just static */
    top: 64px;
    /* Height of header */
    z-index: 90;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.sub-nav-list {
    display: flex;
    justify-content: center;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 1rem;
    overflow-x: auto;
    /* Allow scroll on mobile if needed */
}

.sub-nav-item {
    display: block;
    padding: 1rem 1.5rem;
    color: #64748b;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
    white-space: nowrap;
}

.sub-nav-item:hover {
    color: #3b82f6;
    background: #f8fafc;
}

.sub-nav-item.active {
    color: #2563eb;
    border-bottom-color: #2563eb;
    font-weight: 600;
}

@media (max-width: 640px) {
    .sub-nav-list {
        justify-content: flex-start;
        padding: 0 1rem;
    }

    .sub-nav-item {
        padding: 1rem;
        font-size: 0.9rem;
    }
}

.vcm-desc {
    font-size: 0.93rem;
    color: #64748b;
    line-height: 1.6;
    margin: 0;
    border-top: none;
    /* 移除分割线，让文字更流畅 */
    padding-top: 0;
}

@media (max-width: 500px) {
    .value-grid-modern {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        left: 0;
        width: 100%;
    }

    .value-card-modern {
        left: 0;
        width: 100%;
    }
}

/* =========================================
   Intro Page Specific Styles
   ========================================= */
.intro-hero {
    padding: 140px 0 100px;
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.5)), url('images/intro_hero_bg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    overflow: hidden;
    text-align: center;
    color: white;
    z-index: 1;
}

/* Remove old bg pattern element styles as we use image now, or keep if we want to layer */
.intro-hero-bg {
    display: none;
}

.intro-section {
    padding: 80px 0;
}

.intro-section.alt-bg {
    background-color: #f8fafc;
}

.intro-text-block {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.intro-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: inherit;
    /* Will inherit white in hero, or dark in sections */
    margin-bottom: 1.5rem;
}

/* Specific override for section titles which are on light bg */
.intro-section .intro-title {
    color: #1e293b;
}

.intro-section .intro-desc {
    color: #64748b;
}

.intro-hero .intro-title {
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
}

.intro-desc {
    font-size: 1.125rem;
    line-height: 1.8;
    color: #cbd5e1;
    /* Default for dark bg */
    margin-bottom: 2rem;
}

/* 核心数据网格 */
.stats-grid-lg {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 4rem;
}

.stat-card-lg {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
    border: 1px solid #f1f5f9;
}

.stat-card-lg:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.stat-num-lg {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.stat-label-lg {
    font-size: 1rem;
    color: #64748b;
    font-weight: 500;
}

/* 功能卡片 */
.feature-box-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
    align-items: center;
    margin-top: 4rem;
}

.feature-box-content h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1e293b;
}

.feature-box-content p {
    font-size: 1.05rem;
    color: #475569;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.feature-box-img {
    background: white;
    border-radius: 20px;
    height: 360px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 40px -10px rgba(2, 132, 199, 0.1);
    border: 1px solid #f1f5f9;
}

.feature-box-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s ease;
}

.feature-box-img:hover img {
    transform: scale(1.05);
}

.feature-tag {
    display: inline-block;
    padding: 4px 12px;
    background: #e0f2fe;
    color: #0284c7;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

/* 价格部分 */
.pricing-section {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.pricing-price {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.pricing-unit {
    font-size: 1rem;
    opacity: 0.8;
    font-weight: 400;
}

.pricing-btn {
    background: white;
    color: #2563eb;
    padding: 1rem 3rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.125rem;
    margin-top: 2rem;
    display: inline-block;
    transition: all 0.3s ease;
    text-decoration: none;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.pricing-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
    opacity: 0.95;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .stats-grid-lg {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }

    .feature-box-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .feature-box-content {
        order: 2;
    }

    .feature-box-img {
        order: 1;
        height: 200px;
    }

    .pricing-price {
        font-size: 2.5rem;
    }

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

    .report-section-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .report-body {
        grid-template-columns: 1fr;
    }

    .report-sidebar {
        display: none;
    }
}

/* 报告样本板块 */
.report-section-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
    margin-top: 3rem;
}

.report-demo {
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 50px -12px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
    overflow: hidden;
    position: relative;
}

.report-header {
    background: #f8fafc;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.report-logo-mock {
    font-weight: 700;
    color: #64748b;
    font-size: 0.875rem;
}

.report-body {
    padding: 2rem;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
}

.report-paper {
    font-family: 'Times New Roman', serif;
    font-size: 0.8rem;
    line-height: 1.8;
    color: #94a3b8;
}

.hl-red {
    background: rgba(254, 202, 202, 0.3);
    border-bottom: 2px solid #fca5a5;
    color: #334155;
    position: relative;
}

.hl-red::after {
    content: '1';
    position: absolute;
    top: -6px;
    right: -2px;
    background: #ef4444;
    color: white;
    font-size: 8px;
    padding: 0 3px;
    border-radius: 2px;
    font-family: sans-serif;
}

.hl-blue {
    background: rgba(186, 230, 253, 0.3);
    border-bottom: 2px solid #7dd3fc;
    color: #334155;
    position: relative;
}

.hl-blue::after {
    content: '14';
    position: absolute;
    top: -6px;
    right: -2px;
    background: #0ea5e9;
    color: white;
    font-size: 8px;
    padding: 0 3px;
    border-radius: 2px;
    font-family: sans-serif;
}

.report-sidebar {
    background: #f8fafc;
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid #f1f5f9;
}

.sim-index-card {
    background: #fff;
    border: 1px solid #fee2e2;
    border-radius: 6px;
    padding: 1rem;
    text-align: center;
    margin-bottom: 1rem;
}

.sim-score {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: #ef4444;
    line-height: 1;
}

.sim-label {
    font-size: 0.625rem;
    color: #991b1b;
    text-transform: uppercase;
    font-weight: 600;
    margin-top: 0.25rem;
}

.source-list-mock {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.source-item-mock {
    height: 6px;
    background: #e2e8f0;
    border-radius: 3px;
}

.source-item-mock.w-80 {
    width: 80%;
    background: #fca5a5;
}

.source-item-mock.w-60 {
    width: 60%;
    background: #7dd3fc;
}

.source-item-mock.w-40 {
    width: 40%;
    background: #cbd5e1;
}

.guide-list {
    list-style: none;
    padding: 0;
    counter-reset: guide-counter;
}

.guide-item {
    position: relative;
    padding-left: 3rem;
    margin-bottom: 1.5rem;
}

.guide-item::before {
    counter-increment: guide-counter;
    content: counter(guide-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 2rem;
    height: 2rem;
    background: #e0f2fe;
    color: #0284c7;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
}

.guide-title {
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 0.25rem;
    display: block;
}

.guide-text {
    font-size: 0.95rem;
    color: #64748b;
    line-height: 1.6;
}

/* 系统优势板块 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.adv-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 16px;
    text-align: left;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.adv-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px -5px rgba(0, 0, 0, 0.1);
    border-color: #3b82f6;
}

.adv-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #2563eb;
    margin-bottom: 1.5rem;
}

.adv-icon svg {
    width: 32px;
    height: 32px;
}

.adv-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
}

.adv-desc {
    font-size: 0.95rem;
    color: #64748b;
    line-height: 1.6;
    text-align: justify;
}