/* ===================================
   Visionvast Token - Main Stylesheet
   Theme Color: #01B7EE
   =================================== */

:root {
    --primary-color: #01B7EE;
    --primary-dark: #0199C7;
    --primary-light: #33C5F0;
    --primary-bg: #E6F7FD;
    --text-dark: #1F2937;
    --text-medium: #6B7280;
    --text-light: #9CA3AF;
    --bg-white: #FFFFFF;
    --bg-light: #F9FAFB;
    --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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===================================
   Header & Navigation
   =================================== */

.header {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 700;
    font-size: 20px;
}

.logo-img {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.logo-text {
    color: var(--primary-color);
}

.nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-list a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-dark);
    transition: var(--transition);
}

/* ===================================
   Buttons
   =================================== */

.btn-primary,
.btn-secondary,
.btn-outline {
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-light);
    color: var(--text-dark);
}

.btn-secondary:hover {
    background: var(--border-color);
}

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

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

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
}

/* ===================================
   Hero Section
   =================================== */

.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(1, 183, 238, 0.9) 0%, rgba(1, 153, 199, 0.8) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    padding: 80px 0;
}

.hero-text {
    color: white;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 24px;
    margin-bottom: 16px;
    font-weight: 600;
}

.hero-description {
    font-size: 18px;
    margin-bottom: 32px;
    opacity: 0.95;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.hero-disclaimer {
    font-size: 14px;
    opacity: 0.9;
    font-style: italic;
}

.hero-visual {
    position: relative;
}

.hero-image {
    width: 100%;
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
}

/* ===================================
   Sections
   =================================== */

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-title {
    font-size: 42px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 20px;
    color: var(--text-medium);
}

section {
    padding: 100px 0;
}

/* ===================================
   Features Section
   =================================== */

.features {
    background: var(--bg-light);
}

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

.feature-card {
    background: var(--bg-white);
    padding: 32px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--primary-bg);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-icon i {
    font-size: 32px;
    color: var(--primary-color);
}

.feature-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.feature-description {
    color: var(--text-medium);
    line-height: 1.7;
}

/* ===================================
   How It Works Section
   =================================== */

.how-it-works {
    background: var(--bg-white);
}

.steps-container {
    display: flex;
    flex-direction: column;
    gap: 64px;
}

.step-item {
    display: grid;
    grid-template-columns: 80px 1fr 400px;
    gap: 32px;
    align-items: center;
}

.step-item.step-reverse {
    grid-template-columns: 400px 1fr 80px;
}

.step-item.step-reverse .step-number {
    order: 3;
}

.step-item.step-reverse .step-content {
    order: 2;
}

.step-item.step-reverse .step-image {
    order: 1;
}

.step-number {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    font-weight: 800;
    flex-shrink: 0;
}

.step-content {
    padding: 0 16px;
}

.step-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.step-description {
    font-size: 18px;
    color: var(--text-medium);
    line-height: 1.7;
}

.step-image {
    position: relative;
}

.step-img {
    width: 100%;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

/* ===================================
   Use Cases Section
   =================================== */

.use-cases {
    background: var(--bg-light);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.use-case-card {
    background: var(--bg-white);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.use-case-icon {
    width: 64px;
    height: 64px;
    background: var(--primary-bg);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.use-case-icon i {
    font-size: 32px;
    color: var(--primary-color);
}

.use-case-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.use-case-description {
    color: var(--text-medium);
    line-height: 1.7;
}

/* ===================================
   Testimonials Section
   =================================== */

.testimonials {
    background: var(--bg-white);
}

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

.testimonial-card {
    background: var(--bg-light);
    padding: 32px;
    border-radius: 16px;
    border-left: 4px solid var(--primary-color);
}

.testimonial-text {
    font-size: 16px;
    color: var(--text-medium);
    line-height: 1.8;
    margin-bottom: 24px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 16px;
}

.author-name {
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.author-role {
    font-size: 14px;
    color: var(--text-medium);
}

/* ===================================
   CTA Section
   =================================== */

.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
}

.cta-title {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-description {
    font-size: 20px;
    margin-bottom: 32px;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.cta-disclaimer {
    font-size: 14px;
    opacity: 0.9;
    font-style: italic;
}

/* ===================================
   Page Hero (for sub-pages)
   =================================== */

.page-hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.page-title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
}

.page-subtitle {
    font-size: 20px;
    opacity: 0.95;
}

/* ===================================
   About Page
   =================================== */

.about-section {
    padding: 80px 0;
    background: var(--bg-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-description {
    font-size: 18px;
    color: var(--text-medium);
    line-height: 1.8;
    margin-bottom: 24px;
}

.about-image {
    position: relative;
}

.about-img {
    width: 100%;
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
}

.mission-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.stat-item {
    text-align: center;
    padding: 24px;
    background: var(--primary-bg);
    border-radius: 12px;
}

.stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-medium);
    font-weight: 600;
}

.values-section {
    background: var(--bg-light);
    padding: 80px 0;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.value-card {
    background: var(--bg-white);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.value-icon {
    width: 64px;
    height: 64px;
    background: var(--primary-bg);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.value-icon i {
    font-size: 32px;
    color: var(--primary-color);
}

.value-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.value-description {
    color: var(--text-medium);
    line-height: 1.7;
}

.features-overview {
    padding: 80px 0;
    background: var(--bg-white);
}

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

.feature-item {
    display: flex;
    gap: 24px;
    padding: 32px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.feature-icon-small {
    width: 48px;
    height: 48px;
    background: var(--primary-bg);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

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

.feature-details {
    flex: 1;
}

.feature-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.feature-text {
    color: var(--text-medium);
    line-height: 1.7;
}

.timeline-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 48px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 48px;
}

.timeline-year {
    position: absolute;
    left: -64px;
    top: 0;
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
}

.timeline-content {
    background: var(--bg-white);
    padding: 32px;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    margin-left: 32px;
}

.timeline-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.timeline-description {
    color: var(--text-medium);
    line-height: 1.7;
}

.disclaimer-section {
    padding: 80px 0;
    background: var(--bg-white);
}

.disclaimer-box {
    max-width: 900px;
    margin: 0 auto;
    background: #FFF9E6;
    border: 2px solid #FCD34D;
    border-radius: 16px;
    padding: 40px;
    display: flex;
    gap: 24px;
}

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

.disclaimer-icon i {
    font-size: 48px;
    color: #F59E0B;
}

.disclaimer-content {
    flex: 1;
}

.disclaimer-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.disclaimer-text {
    color: var(--text-medium);
    line-height: 1.8;
}

/* ===================================
   Legal Pages
   =================================== */

.legal-content {
    padding: 80px 0;
    background: var(--bg-white);
}

.legal-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.legal-intro {
    margin-bottom: 48px;
    padding-bottom: 32px;
    border-bottom: 2px solid var(--border-color);
}

.update-date {
    font-size: 14px;
    color: var(--text-medium);
    margin-bottom: 16px;
}

.intro-text {
    font-size: 18px;
    color: var(--text-medium);
    line-height: 1.8;
}

.legal-section {
    margin-bottom: 48px;
}

.legal-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 12px;
}

.legal-title i {
    color: var(--primary-color);
}

.legal-section p {
    font-size: 16px;
    color: var(--text-medium);
    line-height: 1.8;
    margin-bottom: 16px;
}

.legal-list {
    margin: 16px 0;
    padding-left: 24px;
}

.legal-list li {
    font-size: 16px;
    color: var(--text-medium);
    line-height: 1.8;
    margin-bottom: 12px;
}

.contact-box {
    background: var(--bg-light);
    padding: 24px;
    border-radius: 12px;
    margin-top: 16px;
}

.contact-box p {
    margin-bottom: 8px;
}

.contact-box a {
    color: var(--primary-color);
    text-decoration: none;
}

.contact-box a:hover {
    text-decoration: underline;
}

.legal-highlight {
    background: var(--primary-bg);
    border-left: 4px solid var(--primary-color);
    padding: 32px;
    border-radius: 12px;
    margin-top: 48px;
}

.highlight-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.privacy-highlight {
    background: var(--primary-bg);
    padding: 24px;
    border-radius: 12px;
    margin: 16px 0;
    border-left: 4px solid var(--primary-color);
}

.privacy-highlight p {
    margin: 0;
}

/* ===================================
   Contact Page
   =================================== */

.contact-section {
    padding: 80px 0;
    background: var(--bg-white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
}

.contact-form-container,
.contact-info-container {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 16px;
}

.contact-form-title,
.contact-info-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 32px;
    color: var(--text-dark);
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    font-family: inherit;
    transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-bg);
}

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

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 14px;
    color: var(--text-medium);
}

.checkbox-label input[type="checkbox"] {
    margin-top: 4px;
    flex-shrink: 0;
}

.checkbox-label a {
    color: var(--primary-color);
    text-decoration: none;
}

.checkbox-label a:hover {
    text-decoration: underline;
}

.btn-submit {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.form-message {
    margin-top: 16px;
    padding: 12px;
    border-radius: 8px;
    display: none;
}

.form-message.success {
    background: #D1FAE5;
    color: #065F46;
    border: 1px solid #10B981;
    display: block;
}

.form-message.error {
    background: #FEE2E2;
    color: #991B1B;
    border: 1px solid #EF4444;
    display: block;
}

.contact-info-card {
    background: var(--bg-white);
    padding: 24px;
    border-radius: 12px;
    margin-bottom: 24px;
    display: flex;
    gap: 20px;
}

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

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

.contact-method-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.contact-method-text {
    font-size: 14px;
    color: var(--text-medium);
    margin-bottom: 8px;
}

.contact-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.contact-link:hover {
    text-decoration: underline;
}

.response-time-box {
    background: var(--primary-bg);
    padding: 24px;
    border-radius: 12px;
    margin-bottom: 24px;
    display: flex;
    gap: 20px;
}

.response-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.response-icon i {
    font-size: 24px;
    color: white;
}

.response-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.response-text {
    font-size: 14px;
    color: var(--text-medium);
    line-height: 1.7;
}

.support-tips {
    background: var(--bg-white);
    padding: 24px;
    border-radius: 12px;
}

.tips-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 8px;
}

.tips-title i {
    color: var(--primary-color);
}

.tips-list {
    list-style: none;
    padding-left: 0;
}

.tips-list li {
    font-size: 14px;
    color: var(--text-medium);
    line-height: 1.8;
    margin-bottom: 8px;
    padding-left: 24px;
    position: relative;
}

.tips-list li::before {
    content: '•';
    position: absolute;
    left: 8px;
    color: var(--primary-color);
    font-weight: bold;
}

.tips-list a {
    color: var(--primary-color);
    text-decoration: none;
}

.tips-list a:hover {
    text-decoration: underline;
}

/* ===================================
   Download Page
   =================================== */

.download-hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.download-title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
}

.download-subtitle {
    font-size: 24px;
    margin-bottom: 12px;
    opacity: 0.95;
}

.download-description {
    font-size: 18px;
    opacity: 0.9;
}

.download-section {
    padding: 80px 0;
    background: var(--bg-white);
}

.download-wrapper {
    max-width: 1000px;
    margin: 0 auto;
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.download-button-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 24px;
    background: var(--text-dark);
    color: white;
    border-radius: 12px;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.download-btn.app-store {
    background: #000000;
}

.download-btn.google-play {
    background: #000000;
}

.download-btn i {
    font-size: 32px;
}

.download-btn-text {
    display: flex;
    flex-direction: column;
}

.download-btn-label {
    font-size: 12px;
    opacity: 0.8;
}

.download-btn-name {
    font-size: 20px;
    font-weight: 600;
}

.qr-code-container {
    display: flex;
    justify-content: center;
}

.qr-code-box {
    text-align: center;
    padding: 24px;
    background: var(--bg-light);
    border-radius: 12px;
}

.qr-code-image {
    width: 200px;
    height: 200px;
    margin-bottom: 12px;
    border-radius: 8px;
}

.qr-code-label {
    font-size: 14px;
    color: var(--text-medium);
    font-weight: 600;
}

.device-preview {
    position: relative;
}

.device-image {
    width: 100%;
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
}

.requirements-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
}

.requirement-card {
    background: var(--bg-white);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    text-align: center;
}

.requirement-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.requirement-icon i {
    font-size: 40px;
    color: var(--primary-color);
}

.requirement-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-dark);
}

.requirement-list {
    list-style: none;
    text-align: left;
}

.requirement-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-medium);
    position: relative;
    padding-left: 24px;
}

.requirement-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

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

.steps-section {
    padding: 80px 0;
    background: var(--bg-white);
}

.download-steps {
    max-width: 800px;
    margin: 0 auto;
}

.download-step {
    display: flex;
    gap: 32px;
    margin-bottom: 48px;
    align-items: flex-start;
}

.step-number-circle {
    width: 64px;
    height: 64px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 800;
    flex-shrink: 0;
}

.step-content-box {
    flex: 1;
}

.step-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.step-description {
    font-size: 16px;
    color: var(--text-medium);
    line-height: 1.7;
}

.features-reminder {
    padding: 80px 0;
    background: var(--bg-light);
}

.features-reminder-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.feature-reminder-item {
    background: var(--bg-white);
    padding: 24px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

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

.feature-reminder-item span {
    font-weight: 600;
    color: var(--text-dark);
}

.download-notice {
    padding: 80px 0;
    background: var(--bg-white);
}

.notice-box {
    max-width: 900px;
    margin: 0 auto;
    background: #FFF9E6;
    border: 2px solid #FCD34D;
    border-radius: 16px;
    padding: 40px;
    display: flex;
    gap: 24px;
}

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

.notice-icon i {
    font-size: 48px;
    color: #F59E0B;
}

.notice-content {
    flex: 1;
}

.notice-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.notice-text {
    color: var(--text-medium);
    line-height: 1.8;
    margin-bottom: 12px;
}

.help-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.help-box {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    background: var(--bg-white);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.help-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.help-text {
    font-size: 18px;
    color: var(--text-medium);
    line-height: 1.8;
}

.help-text a {
    color: var(--primary-color);
    text-decoration: none;
}

.help-text a:hover {
    text-decoration: underline;
}

/* ===================================
   Footer
   =================================== */

.footer {
    background: var(--text-dark);
    color: white;
    padding: 64px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-logo {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.footer-tagline {
    font-size: 16px;
    opacity: 0.8;
}

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

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

.footer-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-list a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-list a:hover {
    opacity: 1;
    color: var(--primary-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    text-align: center;
    font-size: 14px;
    opacity: 0.8;
}

.footer-update {
    margin-top: 8px;
    font-size: 12px;
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-visual {
        order: -1;
    }

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

    .use-cases-grid {
        grid-template-columns: 1fr;
    }

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

    .step-item {
        grid-template-columns: 80px 1fr;
    }

    .step-item.step-reverse {
        grid-template-columns: 80px 1fr;
    }

    .step-image {
        display: none;
    }

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

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

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

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

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

@media (max-width: 768px) {
    .nav {
        display: none;
    }

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

    .hero-title {
        font-size: 40px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    .section-title {
        font-size: 32px;
    }

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

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

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

    .features-reminder-grid {
        grid-template-columns: 1fr;
    }

    .mission-stats {
        grid-template-columns: 1fr;
    }

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

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

    .btn-primary,
    .btn-secondary,
    .btn-outline {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 32px;
    }

    .page-title {
        font-size: 32px;
    }

    .section-title {
        font-size: 28px;
    }

    section {
        padding: 60px 0;
    }

    .feature-card,
    .use-case-card,
    .value-card {
        padding: 24px;
    }

    .contact-form-container,
    .contact-info-container {
        padding: 24px;
    }
}