/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'DM Sans', sans-serif;
    line-height: 1.6;
    color: #272D3E;
    background-color: #FFFFFF;
}

.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 130px;
}

/* Header */
.header {
    background: linear-gradient(180deg, rgba(47, 54, 75, 1) 0%, rgba(38, 43, 61, 1) 85%);
    padding: 58px 0;
    position: relative;
    overflow: hidden;
}

.header::after {
    content: '';
    position: absolute;
    top: -79px;
    right: 1005px;
    width: 578px;
    height: 578px;
    background: linear-gradient(48deg, rgba(255, 255, 255, 1) 17%, rgba(255, 255, 255, 0) 73%);
    border-radius: 50%;
    opacity: 0.1;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 50px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    width: 50px;
    height: 50px;
    background-color: #00BAC7;
    border-radius: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-text {
    color: #FFFFFF;
    font-size: 18px;
    font-weight: 700;
}

.logo-name {
    color: #FFFFFF;
    font-size: 18px;
    font-weight: 700;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 50px;
    justify-content: center;
    flex: 1;
}

.nav-menu a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 16px;
    font-weight: 400;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #FFFFFF;
}

.btn-download {
    background-color: #FFFFFF;
    color: #272D3E;
    border: none;
    padding: 15px 30px;
    border-radius: 100px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 120px;
    text-align: center;
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
}

/* Hero Section */
.hero {
    background: linear-gradient(180deg, rgba(47, 54, 75, 1) 0%, rgba(38, 43, 61, 1) 85%);
    padding: 216px 0 200px;
    position: relative;
}

.hero .container {
    display: flex;
    align-items: center;
    gap: 134px;
}

.hero-content {
    flex: 1;
    max-width: 575px;
}

.hero-title {
    font-size: 48px;
    font-weight: 500;
    line-height: 1.302;
    color: #FFFFFF;
    margin-bottom: 20px;
}

.hero-description {
    font-size: 16px;
    line-height: 2;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 50px;
    max-width: 470px;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 40px;
    margin-bottom: 100px;
}

.btn-primary {
    background-color: #00BAC7;
    color: #F4F7FF;
    border: none;
    padding: 25px 45px;
    border-radius: 100px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: 0px 15px 30px 0px rgba(0, 186, 199, 0.33);
    transition: all 0.3s ease;
    min-width: 180px;
    justify-content: center;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0px 20px 40px 0px rgba(0, 186, 199, 0.4);
}

.arrow-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.download-info {
    display: flex;
    align-items: center;
    gap: 30px;
}

.download-icon {
    width: 24px;
    height: 24px;
    color: #FFFFFF;
    flex-shrink: 0;
}

.sales-info {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sales-label {
    font-family: 'Source Sans Pro', sans-serif;
    font-size: 16px;
    font-weight: 700;
    line-height: 1.257;
    letter-spacing: 10%;
    color: rgba(255, 255, 255, 0.6);
}

.sales-number {
    font-family: 'Inter', sans-serif;
    font-size: 24px;
    font-weight: 600;
    line-height: 1.21;
    color: #FFFFFF;
}

.tech-label {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.tech-line {
    width: 30px;
    height: 2px;
    background-color: rgba(255, 255, 255, 0.4);
}

.tech-label span {
    font-size: 14px;
    font-weight: 700;
    line-height: 1.302;
    letter-spacing: 10%;
    color: rgba(255, 255, 255, 0.4);
}

.tech-logos {
    display: flex;
    gap: 20px;
    align-items: center;
}

.tech-logo {
    width: 29px;
    height: 41px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.tech-logo.html5 {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 29.07 32.97"><path fill="%23E44D26" d="M0 0h29.07v32.97H0z"/><path fill="%23F16529" d="M14.54 2.43h11.88v28.02H14.54z"/><path fill="%23EBEBEB" d="M5.41 6.07h9.13v11.01H5.41z"/><path fill="%23EBEBEB" d="M6.55 18.89h7.98v7.78H6.55z"/><path fill="%23FFFFFF" d="M14.52 13.43h8.46v13.24H14.52z"/><path fill="%23FFFFFF" d="M14.52 6.07h9.12v3.64H14.52z"/></svg>');
}

.tech-logo.css3 {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 28.97 32.86"><path fill="%23264DE4" d="M0 0h28.97v32.86H0z"/><path fill="%232965F1" d="M14.49 2.42h11.84v27.93H14.49z"/><path fill="%23EBEBEB" d="M6.04 13.39h8.44v3.63H6.04z"/><path fill="%23EBEBEB" d="M5.39 6.05h9.1v3.63H5.39z"/><path fill="%23EBEBEB" d="M6.53 18.83h7.95v7.76H6.53z"/><path fill="%23FFFFFF" d="M14.47 6.05h9.09v20.54H14.47z"/></svg>');
}

.tech-logo.js {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 29.07 30.1"><path fill="%23FFEA00" d="M22.73 2.79h5.7v15.71h-5.7z"/><path fill="%2300CCDA" d="M1.04 2.52h27.06v27.2H1.04z"/><path fill="%23000F43" d="M1.4 1.26h26.31v27.89H1.4z"/><path fill="%23FFEA00" d="M20.97 20.64h6.28v5.8h-6.28z"/><path fill="%23FF272D" d="M25.33 13.31h3.66v6.77h-3.66z"/><path fill="%23FF8E00" d="M15.04 25.28h7.59v4.05h-7.59z"/><path fill="%23FF272D" d="M0 0.44h28.38v29.57H0z"/><path fill="%23FFEA00" d="M17.21 0h11.26v28.44H17.21z"/><path fill="%23FF8E00" d="M10.44 7.8h4.11v4.68h-4.11z"/><path fill="%23C42482" d="M6.2 13.73h6.35v8.57H6.2z"/><path fill="%23C42482" d="M7.18 17.21h9.19v3.19H7.18z"/><path fill="%23C42482" d="M18.22 0.7h10.84v23.75H18.22z"/><path fill="%23FF8E00" d="M9.85 11.96h15.2v15.86H9.85z"/></svg>');
}

.tech-logo.react {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 29.07 23.78"><rect fill="%23FFFFFF" width="29.07" height="23.78" rx="10"/><path fill="%23000000" d="M2.36 2.33h7.65v4.76H2.36z"/></svg>');
}

.tech-logo.node {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 29.07 11.34"><path fill="%23CB3837" d="M0 0h29.07v11.34H0z"/><path fill="%23FFFFFF" d="M1.63 1.63h6.45v6.45H1.63z"/><path fill="%23FFFFFF" d="M9.71 1.63h6.45v8.08H9.71z"/><path fill="%23FFFFFF" d="M17.79 1.63h9.71v6.45H17.79z"/></svg>');
}

.tech-logo.git {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 29.07 29.07"><path fill="%23F05032" d="M0 0h29.07v29.07H0z"/><path fill="%23FFFFFF" d="M6.54 4.97h17.9v19.12H6.54z"/><path fill="%23FFFFFF" d="M9.71 1.63h6.45v6.45H9.71z"/><path fill="%23FFFFFF" d="M17.79 1.63h9.71v6.45H17.79z"/></svg>');
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.book-image {
    width: 641px;
    height: 935px;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: 0px 80px 100px 0px rgba(29, 43, 63, 0.4);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 84px;
}

.section-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: center;
    margin-bottom: 20px;
}

.badge-line {
    width: 30px;
    height: 2px;
    background-color: #00BAC7;
}

.section-badge span {
    font-size: 14px;
    font-weight: 700;
    line-height: 1.302;
    letter-spacing: 10%;
    color: #00BAC7;
}

.section-header h2 {
    font-size: 32px;
    font-weight: 500;
    line-height: 1.375;
    color: #272D3E;
    margin-bottom: 20px;
    max-width: 473px;
    margin-left: auto;
    margin-right: auto;
}

.section-header p {
    font-size: 18px;
    line-height: 1.778;
    color: rgba(39, 45, 62, 0.8);
    max-width: 575px;
    margin-left: auto;
    margin-right: auto;
}

/* For Everyone Section */
.for-everyone {
    padding: 200px 0;
    background-color: #FFFFFF;
}

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

.feature-card {
    text-align: center;
}

.feature-image {
    width: 372px;
    height: 221px;
    margin: 0 auto 20px;
    border-radius: 10px;
    overflow: hidden;
}

.feature-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 500;
    line-height: 1.6;
    color: #000000;
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 16px;
    line-height: 2;
    color: rgba(39, 45, 62, 0.8);
    text-align: center;
}

/* Benefits Section */
.benefits {
    padding: 200px 0;
    background-color: #272D3E;
}

.benefits .section-header h2 {
    color: #FFFFFF;
}

.benefits .section-header p {
    color: rgba(255, 255, 255, 0.8);
}

.quote {
    font-style: italic;
    margin-bottom: 40px;
}

.benefits-content {
    display: flex;
    gap: 30px;
    margin-bottom: 100px;
}

.benefits-list {
    flex: 1;
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 20px;
}

.benefit-check {
    width: 30px;
    height: 30px;
    background-color: #20D27D;
    border-radius: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.benefit-check svg {
    width: 10px;
    height: 7px;
}

.benefit-item p {
    font-size: 16px;
    line-height: 1.875;
    color: rgba(39, 45, 62, 0.8);
}

.benefits-image {
    flex: 1;
    position: relative;
}

.book-preview {
    width: 445px;
    height: 571px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0px 15px 30px 0px rgba(2, 40, 43, 0.33);
}

.book-stats {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: #00BAC7;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0px 30px 60px 0px rgba(0, 186, 199, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 49px;
}

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

.stat-number {
    display: block;
    font-size: 30px;
    font-weight: 700;
    line-height: 1.302;
    color: #FFFFFF;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 14px;
    font-weight: 400;
    line-height: 1.302;
    color: #FFFFFF;
}

.stat-divider {
    width: 1px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.3);
}

.additional-features {
    margin-top: 100px;
}

.feature-preview {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-bottom: 50px;
}

.preview-image {
    width: 555px;
    height: 626px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0px 40px 80px 0px rgba(29, 43, 63, 0.1);
}

.preview-image:first-child {
    background-color: rgba(255, 255, 255, 0.2);
}

.feature-cards {
    display: flex;
    gap: 30px;
    margin-top: 50px;
}

.feature-card-small {
    background-color: #FFFFFF;
    border-radius: 15px;
    padding: 20px 30px;
    box-shadow: 0px 15px 30px 0px rgba(2, 40, 43, 0.1);
    display: flex;
    align-items: center;
    gap: 25px;
    flex: 1;
}

.card-icon {
    width: 30px;
    height: 30px;
    flex-shrink: 0;
}

.card-content {
    flex: 1;
}

.card-content h3 {
    font-size: 18px;
    font-weight: 500;
    line-height: 1.778;
    color: #00BAC7;
    margin-bottom: 5px;
}

.card-content p {
    font-size: 16px;
    line-height: 1.875;
    color: rgba(39, 45, 62, 0.8);
}

.card-arrow {
    width: 40px;
    height: 40px;
    background-color: rgba(0, 186, 199, 0.1);
    border-radius: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Preview Section */
.preview {
    padding: 200px 0;
    background-color: #EDFCFD;
}

.preview-content {
    display: flex;
    gap: 100px;
    align-items: center;
}

.preview-book {
    flex: 1;
}

.main-book {
    width: 367px;
    height: 579px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0px 30px 60px 0px rgba(29, 43, 63, 0.05);
}

.preview-pages {
    flex: 1;
}

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

.page-image {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0px 30px 60px 0px rgba(29, 43, 63, 0.05);
    filter: blur(5px);
    transition: filter 0.3s ease;
}

.page-image:hover {
    filter: none;
}

.page-navigation {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.nav-dots {
    display: flex;
    gap: 15px;
}

.dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background-color: rgba(39, 45, 62, 0.1);
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.dot.active {
    background-color: #00BAC7;
}

.page-info {
    font-size: 16px;
    font-weight: 500;
    line-height: 2;
    color: rgba(39, 45, 62, 0.8);
}

/* Pricing Section */
.pricing {
    padding: 200px 0;
    background-color: #272D3E;
}

.pricing .section-header h2 {
    color: #FFFFFF;
}

.pricing .section-header p {
    color: rgba(255, 255, 255, 0.8);
}

.disclaimer {
    color: rgba(255, 255, 255, 0.8) !important;
    margin-bottom: 80px;
}

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

.pricing-card {
    background-color: #FFFFFF;
    border-radius: 10px;
    padding: 60px;
    text-align: center;
}

.pricing-card h3 {
    font-size: 16px;
    font-weight: 500;
    line-height: 1.302;
    color: #00BAC7;
    margin-bottom: 20px;
}

.price {
    font-size: 32px;
    font-weight: 500;
    line-height: 1.302;
    color: #001533;
    margin-bottom: 40px;
}

.features-list {
    list-style: none;
    margin-bottom: 40px;
}

.features-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    font-family: 'Source Sans Pro', sans-serif;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.257;
    color: #001533;
}

.feature-yes::before {
    content: '✓';
    width: 20px;
    height: 20px;
    background-color: #20D27D;
    border-radius: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFFFFF;
    font-size: 12px;
}

.feature-no::before {
    content: '✕';
    width: 20px;
    height: 20px;
    background-color: #F52E52;
    border-radius: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFFFFF;
    font-size: 12px;
}

.btn-buy {
    background-color: #00BAC7;
    color: #F4F7FF;
    border: none;
    padding: 15px 25px;
    border-radius: 6px;
    font-family: 'Source Sans Pro', sans-serif;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.257;
    cursor: pointer;
    width: 100%;
    box-shadow: 0px 30px 60px 0px rgba(74, 114, 255, 0.25);
    transition: all 0.3s ease;
    min-height: 50px;
}

.btn-buy:hover {
    transform: translateY(-2px);
    box-shadow: 0px 40px 80px 0px rgba(74, 114, 255, 0.3);
}

/* CTA Section */
.cta {
    padding: 150px 0;
    background-color: #EDFCFD;
}

.cta .section-header h2 {
    color: #272D3E;
}

.cta .section-header p {
    color: rgba(39, 45, 62, 0.8);
}

.cta-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    margin-top: 50px;
}

.cta .download-info {
    color: #272D3E;
}

.cta .sales-label {
    color: rgba(39, 45, 62, 0.8);
}

.cta .sales-number {
    color: #272D3E;
}

/* Author Section */
.author {
    padding: 200px 0;
    background-color: #EDFCFD;
}

.author-content {
    display: flex;
    gap: 134px;
    align-items: center;
}

.author-info {
    flex: 1;
}

.author-profile {
    display: flex;
    align-items: center;
    gap: 21px;
    margin: 40px 0;
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.author-details h3 {
    font-size: 18px;
    font-weight: 500;
    line-height: 1.302;
    color: #272D3E;
    margin-bottom: 5px;
}

.author-details span {
    font-size: 14px;
    font-weight: 400;
    line-height: 1.302;
    color: rgba(39, 45, 62, 0.8);
}

.author-quote p {
    font-size: 18px;
    line-height: 2.222;
    color: #272D3E;
    max-width: 674px;
}

/* Author Profile Section */
.author-profile-section {
    padding: 200px 0;
    background-color: #272D3E;
}

.author-content {
    display: flex;
    gap: 75px;
    align-items: center;
}

.author-images {
    flex: 1;
    position: relative;
}

.author-img {
    width: 551px;
    height: 652px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0px 30px 60px 0px rgba(29, 43, 63, 0.2);
}

.author-img:first-child {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

.author-img:last-child {
    position: relative;
    top: 12px;
    left: 15px;
    z-index: 2;
}

.author-badge {
    position: absolute;
    bottom: 181px;
    right: 64px;
    background-color: #00BAC7;
    padding: 25px 35px;
    border-radius: 5px;
    z-index: 3;
}

.author-badge h3 {
    font-size: 20px;
    font-weight: 500;
    line-height: 1.302;
    color: #FFFFFF;
    margin-bottom: 5px;
}

.author-badge span {
    font-size: 16px;
    font-weight: 400;
    line-height: 1.302;
    color: rgba(255, 255, 255, 0.8);
}

.author-profile-section .author-info {
    flex: 1;
}

.author-profile-section .author-info h2 {
    color: #FFFFFF;
}

.author-profile-section .author-info p {
    color: #272D3E;
    max-width: 573px;
}

/* Testimonials Section */
.testimonials {
    padding: 100px 0;
    background-color: #EDFCFD;
}

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

.testimonial-card {
    background-color: #FFFFFF;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0px 30px 60px 0px rgba(0, 186, 199, 0.08);
}

.testimonial-card p {
    font-size: 16px;
    line-height: 1.875;
    color: #272D3E;
    margin-bottom: 30px;
    max-width: 347px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 17px;
}

.testimonial-author .author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 100px;
    object-fit: cover;
}

.testimonial-author .author-info h4 {
    font-size: 16px;
    font-weight: 500;
    line-height: 1;
    color: #272D3E;
    margin-bottom: 5px;
}

.testimonial-author .author-info span {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.143;
    color: rgba(39, 45, 62, 0.8);
}

/* Footer */
.footer {
    background-color: #272D3E;
    padding: 100px 0 50px;
}

.footer-content {
    border-top: 1px solid rgba(255, 255, 255, 0.03);
}

.footer-main {
    display: flex;
    gap: 31px;
    padding: 50px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.footer-brand {
    flex: 1;
}

.footer-brand .logo {
    margin-bottom: 15px;
}

.footer-brand p {
    font-size: 16px;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.8);
    max-width: 300px;
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 700;
    line-height: 1.302;
    letter-spacing: 10%;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 20px;
}

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

.footer-column li {
    margin-bottom: 8px;
}

.footer-column a {
    font-size: 16px;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: #FFFFFF;
}

.footer-bottom {
    text-align: center;
    padding: 50px 0;
}

.footer-bottom p {
    font-size: 12px;
    font-weight: 700;
    line-height: 1.302;
    letter-spacing: 10%;
    color: rgba(255, 255, 255, 0.4);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .container {
        padding: 0 80px;
    }
    
    .hero .container {
        flex-direction: column;
        text-align: center;
        gap: 60px;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .author-content {
        gap: 60px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 40px;
    }
    
    .nav {
        flex-direction: column;
        gap: 30px;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 20px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .author-content {
        flex-direction: column;
        gap: 50px;
    }
    
    .benefits-content {
        flex-direction: column;
        gap: 50px;
    }
    
    .preview-content {
        flex-direction: column;
        gap: 50px;
    }
    
    .cta-actions {
        flex-direction: column;
        gap: 30px;
    }
    
    .footer-main {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 40px;
    }
    
    .btn-primary {
        min-width: 160px;
        padding: 20px 35px;
    }
    
    .btn-download {
        min-width: 100px;
        padding: 12px 25px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 20px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .section-header h2 {
        font-size: 24px;
    }
    
    .btn-primary {
        padding: 20px 30px;
        font-size: 14px;
        min-width: 140px;
    }
    
    .pricing-card {
        padding: 40px 20px;
    }
    
    .btn-buy {
        min-height: 45px;
        font-size: 14px;
    }
}