/* ===== CSS Reset ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

ul, ol {
    list-style: none;
}

a {
    text-decoration: none;
    color: inherit;
}

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

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* ===== CSS Variables ===== */
:root {
    --primary: #41C9B4;
    --primary-dark: #35b09d;
    --primary-light: #e8f8f5;
    --accent: #FF7A45;
    --accent-dark: #e86a38;
    --text-primary: #1a1a2e;
    --text-secondary: #5a6474;
    --text-light: #8b95a5;
    --bg-gray: #f7f9fc;
    --bg-dark: #1a1a2e;
    --border-color: #e8ecf1;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --container-width: 1200px;
    --nav-height: 72px;
}

/* ===== Common Layout ===== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

.section-gray {
    background-color: var(--bg-gray);
}

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

.section-title h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.section-title p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
    gap: 8px;
}

.btn-primary {
    background-color: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(65, 201, 180, 0.3);
}

.btn-accent {
    background-color: var(--accent);
    color: #fff;
}

.btn-accent:hover {
    background-color: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 122, 69, 0.3);
}

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

.btn-outline:hover {
    background-color: var(--primary);
    color: #fff;
}

.btn-large {
    padding: 18px 40px;
    font-size: 18px;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 1px 0 var(--border-color);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-menu a {
    font-size: 15px;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

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

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
    border-radius: 1px;
}

.nav-cta {
    padding: 10px 24px;
    font-size: 14px;
}

.mobile-menu-btn {
    display: none;
    font-size: 24px;
    color: var(--text-primary);
}

/* ===== Hero Section (Home) ===== */
.hero {
    padding: calc(var(--nav-height) + 80px) 0 100px;
    background: linear-gradient(135deg, #f0faf8 0%, #e8f4fc 50%, #f5f0ff 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(65, 201, 180, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 122, 69, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 650px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(65, 201, 180, 0.1);
    border: 1px solid rgba(65, 201, 180, 0.2);
    border-radius: 100px;
    font-size: 14px;
    color: var(--primary-dark);
    font-weight: 500;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 52px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.hero h1 span {
    color: var(--primary);
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.hero-stat-item {
    text-align: left;
}

.hero-stat-item .number {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 8px;
}

.hero-stat-item .number span {
    font-size: 18px;
    color: var(--primary);
}

.hero-stat-item .label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ===== Advantages Section ===== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.advantage-card {
    background: #fff;
    padding: 48px 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

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

.advantage-icon {
    width: 64px;
    height: 64px;
    background: var(--primary-light);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 24px;
}

.advantage-card h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

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

.advantage-card .highlight {
    color: var(--primary);
    font-weight: 600;
}

/* ===== Services Section ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: #fff;
    padding: 40px 28px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.service-icon {
    font-size: 36px;
    margin-bottom: 20px;
}

.service-card h4 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.service-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.service-card ul {
    font-size: 13px;
    color: var(--text-light);
}

.service-card ul li {
    padding: 4px 0;
    padding-left: 16px;
    position: relative;
}

.service-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 600;
}

.services-cta {
    text-align: center;
    margin-top: 48px;
}

/* ===== Cases Section ===== */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.case-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

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

.case-image {
    height: 240px;
    background: linear-gradient(135deg, var(--primary-light), #f0f4ff);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 72px;
    position: relative;
    overflow: hidden;
}

.case-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.03));
}

.case-content {
    padding: 28px;
}

.case-tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--primary-light);
    color: var(--primary-dark);
    font-size: 12px;
    font-weight: 500;
    border-radius: 100px;
    margin-bottom: 12px;
}

.case-content h4 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.case-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.cases-cta {
    text-align: center;
    margin-top: 48px;
}

/* ===== Process Section (Home Preview) ===== */
.process-timeline {
    display: flex;
    justify-content: space-between;
    position: relative;
    padding: 40px 0;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 72px;
    left: 5%;
    right: 5%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0.3;
}

.process-step {
    flex: 1;
    text-align: center;
    position: relative;
    z-index: 1;
}

.process-step-num {
    width: 64px;
    height: 64px;
    background: #fff;
    border: 3px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin: 0 auto 20px;
}

.process-step h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.process-step p {
    font-size: 13px;
    color: var(--text-secondary);
    padding: 0 10px;
}

/* ===== Audience Section ===== */
.audience-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.audience-card {
    background: #fff;
    padding: 32px 20px;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.audience-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.audience-card h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.audience-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ===== CTA Section ===== */
.cta-section {
    background: linear-gradient(135deg, var(--text-primary) 0%, #2d2d4a 100%);
    color: #fff;
    text-align: center;
    padding: 80px 0;
}

.cta-section h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-section p {
    font-size: 18px;
    opacity: 0.8;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    color: #fff;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    opacity: 0.7;
    margin-bottom: 20px;
}

.footer-col h5 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

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

.footer-col ul li a {
    font-size: 14px;
    opacity: 0.7;
    transition: opacity 0.3s;
}

.footer-col ul li a:hover {
    opacity: 1;
    color: var(--primary);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 13px;
    opacity: 0.5;
}

/* ===== Page Header (Inner Pages) ===== */
.page-header {
    padding: calc(var(--nav-height) + 60px) 0 80px;
    background: linear-gradient(135deg, #f0faf8 0%, #e8f4fc 100%);
    text-align: center;
}

.page-header h1 {
    font-size: 42px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.page-header p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Solutions Page ===== */
.solution-detail-section {
    padding: 80px 0;
}

.solution-detail-section:nth-child(even) {
    background: var(--bg-gray);
}

.solution-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.solution-detail.reverse .solution-image {
    order: -1;
}

.solution-image {
    height: 360px;
    background: linear-gradient(135deg, var(--primary-light), #f0f4ff);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 120px;
}

.solution-content h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.solution-content > p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

.solution-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.solution-feature-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.solution-feature-item .icon {
    width: 24px;
    height: 24px;
    background: var(--primary-light);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: var(--primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.solution-feature-item span {
    font-size: 14px;
    color: var(--text-secondary);
}

.product-categories {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.category-card {
    background: #fff;
    padding: 32px;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

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

.category-card .icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.category-card h4 {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.category-card p {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ===== Process Detail Page ===== */
.process-detail-section {
    padding: 80px 0;
}

.process-detail-item {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 40px;
    padding: 40px 0;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.process-detail-item:last-child {
    border-bottom: none;
}

.process-detail-num {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.process-detail-content h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.process-detail-content .duration {
    display: inline-block;
    padding: 4px 12px;
    background: var(--primary-light);
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 500;
    border-radius: 100px;
    margin-bottom: 16px;
}

.process-detail-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.process-detail-content ul {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.process-detail-content ul li {
    font-size: 14px;
    color: var(--text-secondary);
    padding-left: 20px;
    position: relative;
}

.process-detail-content ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 600;
}

.timeline-summary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    padding: 48px;
    border-radius: var(--radius-lg);
    text-align: center;
    margin-top: 60px;
}

.timeline-summary h3 {
    font-size: 28px;
    margin-bottom: 12px;
}

.timeline-summary p {
    font-size: 18px;
    opacity: 0.9;
}

/* ===== About Page ===== */
.about-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-hero-image {
    height: 400px;
    background: linear-gradient(135deg, var(--primary-light), #f0f4ff);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 140px;
}

.about-hero h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
}

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

.advantages-numbers {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-top: 60px;
    text-align: center;
}

.advantage-num-item .num {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
}

.advantage-num-item .label {
    font-size: 14px;
    color: var(--text-secondary);
}

.team-section {
    background: var(--bg-gray);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.team-card {
    background: #fff;
    padding: 32px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.team-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: #fff;
}

.team-card h4 {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.team-card .title {
    font-size: 13px;
    color: var(--primary);
    margin-bottom: 12px;
}

.team-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== Contact Page ===== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.contact-info > p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 28px;
}

.contact-item .icon {
    width: 48px;
    height: 48px;
    background: var(--primary-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 14px;
    color: var(--text-secondary);
}

.contact-form-wrapper {
    background: #fff;
    padding: 48px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form-wrapper h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.contact-form-wrapper .form-desc {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 14px;
}

.form-row {
    margin-bottom: 20px;
}

.form-row label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-row label .required {
    color: var(--accent);
    margin-left: 2px;
}

.form-row input,
.form-row select,
.form-row textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s;
    background: #fff;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(65, 201, 180, 0.1);
}

.form-row textarea {
    resize: vertical;
    min-height: 100px;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-submit {
    width: 100%;
    padding: 16px;
    font-size: 16px;
    margin-top: 8px;
}

.faq-section {
    background: var(--bg-gray);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: #fff;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.faq-question {
    padding: 24px;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.3s;
}

.faq-question:hover {
    color: var(--primary);
}

.faq-question .arrow {
    transition: transform 0.3s;
    color: var(--text-light);
}

.faq-item.active .faq-question .arrow {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 14px;
}

.faq-item.active .faq-answer {
    padding-bottom: 24px;
    max-height: 200px;
}

/* ===== Cases Filter ===== */
.cases-filter {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 48px;
}

.filter-btn {
    padding: 10px 24px;
    border-radius: 100px;
    font-size: 14px;
    color: var(--text-secondary);
    background: #fff;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* ===== Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 42px;
    }
    
    .advantages-grid,
    .services-grid,
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .audience-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    
    .solution-detail,
    .about-hero,
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .solution-detail.reverse .solution-image {
        order: 0;
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantages-numbers {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    
    .section-title h2 {
        font-size: 28px;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        gap: 20px;
        box-shadow: var(--shadow-md);
    }
    
    .nav-menu.open {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero {
        padding: calc(var(--nav-height) + 40px) 0 60px;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 24px;
    }
    
    .advantages-grid,
    .services-grid,
    .cases-grid,
    .product-categories {
        grid-template-columns: 1fr;
    }
    
    .audience-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-timeline {
        flex-direction: column;
        gap: 32px;
    }
    
    .process-timeline::before {
        display: none;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .page-header {
        padding: calc(var(--nav-height) + 40px) 0 60px;
    }
    
    .page-header h1 {
        font-size: 32px;
    }
    
    .process-detail-item {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .process-detail-content ul {
        grid-template-columns: 1fr;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form-wrapper {
        padding: 32px 24px;
    }
    
    .team-grid,
    .advantages-numbers {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cta-section h2 {
        font-size: 28px;
    }
    
    .timeline-summary {
        padding: 32px 24px;
    }
    
    .timeline-summary h3 {
        font-size: 22px;
    }
}

@media (max-width: 480px) {
    .audience-grid {
        grid-template-columns: 1fr;
    }
    
    .team-grid,
    .advantages-numbers {
        grid-template-columns: 1fr;
    }
    
    .hero-stat-item .number {
        font-size: 26px;
    }
}

.about-hero-image img{
    width: 100%;
    height: auto;
    object-fit: cover;
}