/* ==================== */
/* 三分米信息技术 - 完整美化版样式表 */
/* ==================== */

/* ========== 全局变量 ========== */
:root {
    --primary-color: #1e40af;
    --primary-light: #3b82f6;
    --primary-dark: #1e3a8a;
    --secondary-color: #059669;
    --accent-color: #f59e0b;
    --text-dark: #1f2937;
    --text-gray: #6b7280;
    --text-light: #9ca3af;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --gradient-warning: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    background: var(--bg-light);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* ========== 导航栏 ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-icon {
    font-size: 2rem;
}

.logo-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* ========== Hero Section ========== */
.hero {
    position: relative;
    min-height: 100vh;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 70px;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.2);
}

.hero-content {
    position: relative;
    text-align: center;
    color: white;
    padding: 0 20px;
    max-width: 900px;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    font-weight: 600;
    margin-bottom: 20px;
    opacity: 0.95;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-description {
    font-size: clamp(1rem, 2.5vw, 1.3rem);
    margin-bottom: 40px;
    line-height: 1.8;
    opacity: 0.95;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.6s backwards;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: 2rem;
    animation: bounce 2s infinite;
    z-index: 1;
}

/* ========== 通用组件 ========== */
.btn {
    padding: 16px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.btn-primary {
    background: var(--bg-white);
    color: var(--primary-color);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: transparent;
    color: var(--bg-white);
    border: 2px solid var(--bg-white);
}

.btn-secondary:hover {
    background: var(--bg-white);
    color: var(--primary-color);
}

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

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 15px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-gray);
    max-width: 700px;
    margin: 0 auto;
}

section {
    padding: 100px 0;
}

/* ========== Services Section ========== */
.services {
    background: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

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

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

.service-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: inline-block;
    transition: transform 0.3s ease;
}

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

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.service-desc {
    color: var(--text-gray);
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-features {
    list-style: none;
}

.service-features li {
    color: var(--text-dark);
    padding: 8px 0;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ========== About Section ========== */
.about {
    background: var(--bg-white);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-intro {
    font-size: 1.2rem;
    color: var(--text-gray);
    margin-bottom: 30px;
    line-height: 1.8;
}

.about-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 30px 0 15px 0;
}

.about-text h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin: 25px 0 10px 0;
}

.about-text p {
    color: var(--text-gray);
    margin-bottom: 15px;
    line-height: 1.8;
}

.about-features {
    list-style: none;
    padding: 0;
}

.about-features li {
    padding: 12px 0;
    padding-left: 35px;
    position: relative;
    color: var(--text-dark);
}

.about-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
}

.value-props {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.value-item {
    text-align: center;
    padding: 25px 15px;
    background: var(--bg-light);
    border-radius: 12px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.value-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
    background: white;
}

.value-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.value-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
}

.about-stats {
    display: grid;
    gap: 20px;
}

.stat-item {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: scale(1.05);
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.95;
}

/* ========== Advantage Section ========== */
.advantage {
    background: var(--bg-light);
}

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

.advantage-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.05), rgba(5, 150, 105, 0.05));
    opacity: 0;
    transition: opacity 0.4s ease;
}

.advantage-card:hover::before {
    opacity: 1;
}

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

.advantage-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
    display: inline-block;
    transition: transform 0.3s ease;
}

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

.advantage-card h4 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.advantage-card p {
    color: var(--text-gray);
    line-height: 1.7;
}

/* ========== Contact Section ========== */
.contact {
    background: var(--bg-white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 25px;
    background: var(--bg-light);
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
}

.info-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
    background: white;
}

.info-icon {
    font-size: 2rem;
}

.info-details h4 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.info-details p {
    color: var(--text-gray);
    line-height: 1.6;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    outline: none;
    transition: all 0.3s ease;
    font-family: inherit;
    background: var(--bg-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(30, 64, 175, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-full {
    width: 100%;
}

/* ========== Footer ========== */
.footer {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.footer-brand p {
    opacity: 0.9;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: white;
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-contact p {
    margin-bottom: 10px;
    opacity: 0.9;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.9rem;
    opacity: 0.8;
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-20px);
    }
    60% {
        transform: translateX(-50%) translateY(-10px);
    }
}

/* ========== Breadcrumb ========== */
.breadcrumb-section {
    padding: 20px 0;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb {
    display: flex;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--text-gray);
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 5px;
}

.breadcrumb a:hover {
    color: var(--secondary-color);
    gap: 8px;
}

.breadcrumb span {
    color: var(--text-dark);
}

/* ========== Blog Page Header ========== */
.page-header {
    padding: 140px 0 80px;
    background: var(--gradient-primary);
    color: white;
    text-align: center;
}

.page-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 15px;
}

.page-subtitle {
    font-size: 1.2rem;
    opacity: 0.95;
    max-width: 700px;
    margin: 0 auto;
}

/* ========== Blog Grid Cards ========== */
.blog-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 40px;
}

.blog-card {
    background: var(--bg-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

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

.blog-image {
    position: relative;
    height: 220px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    padding: 20px;
    overflow: hidden;
}

.blog-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.3) 100%);
}

.blog-tag {
    position: relative;
    background: rgba(255, 255, 255, 0.98);
    color: var(--primary-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    z-index: 1;
}

.blog-content {
    padding: 30px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.blog-meta {
    display: flex;
    gap: 15px;
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 15px;
}

.blog-date {
    display: flex;
    align-items: center;
    gap: 5px;
}

.blog-category {
    color: var(--primary-color);
    font-weight: 500;
    background: rgba(30, 64, 175, 0.1);
    padding: 3px 10px;
    border-radius: 4px;
}

.blog-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
    line-height: 1.4;
    flex: 1;
}

.blog-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

.blog-title a:hover {
    color: var(--primary-color);
}

.blog-excerpt {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

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

.blog-footer .btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 10px 20px;
    font-size: 0.9rem;
    border-radius: 6px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.blog-footer .btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateX(5px);
}

.blog-views {
    color: var(--text-light);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* ========== Pagination ========== */
.blog-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 60px;
}

.pagination-btn {
    padding: 12px 20px;
    border: 2px solid var(--border-color);
    background: var(--bg-white);
    color: var(--text-dark);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 45px;
}

.pagination-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.pagination-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-md);
}

.pagination-btn.next {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* ========== Newsletter ========== */
.newsletter {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.newsletter::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
}

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

.newsletter-content {
    position: relative;
    z-index: 1;
}

.newsletter-content h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    font-weight: 800;
}

.newsletter-content p {
    font-size: 1.1rem;
    margin-bottom: 40px;
    opacity: 0.95;
}

.newsletter-form {
    display: flex;
    justify-content: center;
    gap: 15px;
    max-width: 600px;
    margin: 0 auto;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.newsletter-form input[type="email"] {
    flex: 1;
    min-width: 280px;
    max-width: 350px;
    padding: 18px 25px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    outline: none;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.newsletter-form .btn-primary {
    background: var(--accent-color);
    color: var(--text-dark);
    border: none;
    padding: 18px 40px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
    transition: all 0.3s ease;
}

.newsletter-form .btn-primary:hover {
    background: #d97706;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5);
}

/* ========== Article Details Page ========== */
.article-section {
    padding: 60px 0 100px;
    background: var(--bg-light);
}

.article-content {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 60px;
}

.article-header {
    margin-bottom: 40px;
}

.article-tags {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.tag {
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.tag-primary {
    background: var(--primary-color);
    color: white;
}

.tag-secondary {
    background: var(--secondary-color);
    color: white;
}

.article-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 20px;
    line-height: 1.3;
}

.article-meta {
    display: flex;
    gap: 30px;
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-gray);
    font-size: 0.95rem;
    background: var(--bg-light);
    padding: 8px 15px;
    border-radius: 6px;
}

.article-banner {
    margin-bottom: 40px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.banner-placeholder {
    height: 400px;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
}

.article-body {
    background: var(--bg-white);
    padding: 50px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    line-height: 1.9;
}

.article-body > * {
    margin-bottom: 30px;
}

.intro {
    font-size: 1.15rem;
    color: var(--text-gray);
    line-height: 1.8;
    padding-left: 20px;
    border-left: 4px solid var(--primary-color);
}

.article-body h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-dark);
    margin: 50px 0 25px 0;
    padding-bottom: 15px;
    border-bottom: 3px solid var(--primary-color);
}

.article-body h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-dark);
    margin: 40px 0 20px 0;
}

.article-body p {
    color: var(--text-dark);
    margin-bottom: 20px;
}

.article-body ul,
.article-body ol {
    margin-left: 30px;
    margin-bottom: 25px;
}

.article-body li {
    margin-bottom: 12px;
    position: relative;
}

.article-body ul li::marker {
    color: var(--primary-color);
}

.article-body blockquote {
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.05), rgba(5, 150, 105, 0.05));
    border-left: 5px solid var(--primary-color);
    padding: 25px 30px;
    margin: 30px 0;
    border-radius: 0 8px 8px 0;
    font-style: italic;
}

.article-body blockquote strong {
    color: var(--primary-color);
}

.feature-box,
.warning-box,
.success-box {
    padding: 30px;
    border-radius: 12px;
    margin: 30px 0;
    border-left: 4px solid;
}

.feature-box {
    background: rgba(30, 64, 175, 0.05);
    border-color: var(--primary-color);
}

.warning-box {
    background: rgba(245, 158, 11, 0.05);
    border-color: var(--accent-color);
}

.success-box {
    background: rgba(5, 150, 105, 0.05);
    border-color: var(--secondary-color);
}

.info-table {
    width: 100%;
    border-collapse: collapse;
    margin: 30px 0;
    box-shadow: var(--shadow-md);
    border-radius: 12px;
    overflow: hidden;
}

.info-table th {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: 18px;
    text-align: left;
    font-weight: 600;
}

.info-table td {
    padding: 15px 18px;
    border-bottom: 1px solid var(--border-color);
}

.info-table tr:last-child td {
    border-bottom: none;
}

.info-table tr:nth-child(even) {
    background: var(--bg-light);
}

.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 50px;
    border-radius: 16px;
    text-align: center;
    color: white;
    margin: 50px 0;
    box-shadow: var(--shadow-lg);
}

.cta-section h3 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.cta-section p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-buttons .btn {
    padding: 16px 40px;
    box-shadow: var(--shadow-md);
}

.cta-buttons .btn-primary {
    background: var(--bg-white);
    color: var(--primary-color);
}

.cta-buttons .btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

.article-footer {
    padding: 30px 0;
    border-top: 1px solid var(--border-color);
}

.article-tags-list {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.tag-label {
    font-weight: 600;
    color: var(--text-dark);
}

.article-tags-list .tag {
    background: var(--bg-light);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

/* ========== Related Posts ========== */
.related-posts {
    margin: 60px 0 40px;
}

.related-posts h3 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 30px;
    padding-left: 20px;
    border-left: 5px solid var(--primary-color);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.related-card {
    background: var(--bg-white);
    padding: 30px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    gap: 15px;
}

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

.related-tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    align-self: flex-start;
}

.related-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.5;
    flex: 1;
}

/* ========== Comments Section ========== */
.comments-section {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 2px solid var(--border-color);
}

.comments-section h3 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 40px;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 10px;
}

.comment-form {
    background: var(--bg-white);
    padding: 30px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    margin-bottom: 40px;
}

.comment-form textarea {
    width: 100%;
    padding: 18px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    resize: vertical;
    font-family: inherit;
    margin-bottom: 15px;
    font-size: 1rem;
    line-height: 1.6;
    transition: all 0.3s ease;
}

.comment-form textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(30, 64, 175, 0.1);
    outline: none;
}

.comment-form button {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border: none;
    padding: 14px 40px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
}

.comment-form button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.comments-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.comment-item {
    background: var(--bg-white);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.comment-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.comment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.comment-author {
    font-weight: 700;
    color: var(--text-dark);
    font-size: 1.05rem;
}

.comment-date {
    color: var(--text-light);
    font-size: 0.85rem;
}

.comment-content {
    color: var(--text-gray);
    line-height: 1.7;
}

/* ========== Sidebar Widget ========== */
.article-sidebar {
    position: sticky;
    top: 90px;
    height: fit-content;
}

.sidebar-widget {
    background: var(--bg-white);
    padding: 30px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.sidebar-widget:hover {
    box-shadow: var(--shadow-lg);
}

.sidebar-widget h4 {
    font-size: 1.3rem;
    font-weight: 800;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 3px solid var(--primary-color);
    color: var(--text-dark);
}

.sidebar-widget p {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 20px;
}

.sidebar-widget .btn {
    width: 100%;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
}

.category-list {
    list-style: none;
}

.category-list li {
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.category-list li:hover {
    padding-left: 10px;
}

.category-list a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.category-list a:hover {
    color: var(--primary-color);
}

.category-count {
    background: var(--bg-light);
    color: var(--primary-color);
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* ========== Tag Cloud ========== */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.cloud-tag {
    background: var(--bg-light);
    color: var(--primary-color);
    padding: 10px 18px;
    border-radius: 8px;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    font-weight: 500;
}

.cloud-tag:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-color: transparent;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ========== Responsive Design ========== */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--bg-white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: 40px 0;
        gap: 25px;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .about-content,
    .contact-content,
    .footer-content,
    .value-props {
        grid-template-columns: 1fr;
    }

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

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

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

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

    .article-sidebar {
        display: none;
    }

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

    .newsletter-form {
        flex-direction: column;
    }

    .newsletter-form input[type="email"] {
        width: 100%;
        max-width: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-description {
        font-size: 0.95rem;
    }

    section {
        padding: 60px 0;
    }

    .service-card,
    .advantage-card {
        padding: 30px 20px;
    }

    .btn {
        padding: 14px 30px;
        font-size: 1rem;
    }

    .value-number {
        font-size: 2rem;
    }

    .page-header {
        padding: 120px 0 60px;
    }

    .article-body {
        padding: 30px 20px;
    }

    .meta-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }

    .cta-buttons {
        flex-direction: column;
    }

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

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

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