/* =============================================
   PATENT SITE - MAIN STYLES
   Коновалова Е.А. - Патентовед
   ============================================= */

/* Variables */
:root {
    --primary-color: #1a365d;
    --primary-light: #2c5282;
    --secondary-color: #c9a227;
    --secondary-light: #e6c65c;
    --text-color: #2d3748;
    --text-light: #718096;
    --light-bg: #f7fafc;
    --white: #ffffff;
    --gray: #a0aec0;
    --border-radius: 16px;
    --border-radius-sm: 8px;
    --box-shadow: 0 4px 20px rgba(26, 54, 93, 0.08);
    --box-shadow-lg: 0 20px 40px rgba(26, 54, 93, 0.12);
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-padding-top: 90px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--white);
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Playfair Display', serif;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

/* Section Titles */
.section-title {
    text-align: center;
    font-size: 2.75rem;
    margin-bottom: 1rem;
    position: relative;
    letter-spacing: -0.5px;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--secondary-color);
    margin: 20px auto 0;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* =============================================
   NAVBAR
   ============================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    box-shadow: none;
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
    padding: 0.75rem 0;
}

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

.logo {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links a {
    padding: 10px 18px;
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-color);
    border-radius: 8px;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--secondary-color);
    background: rgba(201, 162, 39, 0.08);
}

.btn-contact {
    padding: 10px 24px !important;
    background: var(--primary-color);
    border-radius: 50px !important;
    color: var(--white) !important;
    font-weight: 600;
}

.btn-contact:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(26, 54, 93, 0.25);
    background: var(--primary-light) !important;
}

.hamburger {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 10px;
    color: var(--primary-color);
    background: none;
    border: none;
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 36px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    cursor: pointer;
    border: none;
    gap: 10px;
    transition: var(--transition);
}

.btn-primary {
    background: var(--secondary-color);
    color: var(--white);
    box-shadow: 0 8px 24px rgba(201, 162, 39, 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(201, 162, 39, 0.45);
    background: #b8922a;
}

.btn-outline {
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: var(--white);
    background: rgba(255, 255, 255, 0.1);
}

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

/* =============================================
   PAGE HEADER (for inner pages)
   ============================================= */
.page-header {
    background: var(--primary-color);
    padding: 140px 0 80px;
    text-align: center;
    color: var(--white);
}

.page-header h1 {
    color: var(--white);
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto;
}

/* =============================================
   HERO SECTION (index page)
   ============================================= */
.hero-section {
    min-height: 100vh;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--white);
    padding: 120px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.15);
    padding: 12px 24px;
    border-radius: 50px;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-badge svg {
    color: var(--secondary-color);
}

.hero-title {
    font-size: 3.5rem;
    color: var(--white);
    margin-bottom: 1.5rem;
    line-height: 1.15;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.35rem;
    margin-bottom: 1.5rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* =============================================
   SERVICES SECTION
   ============================================= */
.services-section {
    padding: 120px 0;
    background-color: var(--light-bg);
}

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

.service-card {
    background: var(--white);
    padding: 48px 36px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--secondary-color);
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--box-shadow-lg);
}

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

.icon-wrapper {
    width: 80px;
    height: 80px;
    background: rgba(201, 162, 39, 0.1);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: var(--secondary-color);
    transition: var(--transition);
}

.service-card:hover .icon-wrapper {
    background: var(--secondary-color);
    color: var(--white);
    transform: scale(1.1);
}

.service-card:hover .icon-wrapper svg {
    stroke: var(--white);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.service-list {
    text-align: left;
}

.service-list li {
    margin-bottom: 14px;
}

.service-list li a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--light-bg);
    border-radius: var(--border-radius-sm);
    color: var(--text-color);
    font-weight: 500;
}

.service-list li a:hover {
    background: rgba(201, 162, 39, 0.1);
    color: var(--primary-color);
    transform: translateX(5px);
}

.service-list li svg {
    color: var(--secondary-color);
    flex-shrink: 0;
}

/* =============================================
   STANDARDS SECTION
   ============================================= */
.standards-section {
    padding: 100px 0;
    background: var(--primary-color);
    color: var(--white);
}

.standards-section .section-title {
    color: var(--white);
}

.standards-section .section-title::after {
    background: var(--secondary-color);
}

.standards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.standard-item {
    background: rgba(255, 255, 255, 0.08);
    padding: 40px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.standard-item:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-5px);
}

.standard-item h4 {
    color: var(--secondary-color);
    margin-bottom: 16px;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.standard-item p {
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 16px;
}

.standard-item ul {
    list-style: none;
    padding: 0;
    margin-top: 16px;
}

.standard-item ul li {
    margin-bottom: 12px;
    color: rgba(255, 255, 255, 0.9);
    padding-left: 20px;
    position: relative;
}

.standard-item ul li::before {
    content: '•';
    color: var(--secondary-color);
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* =============================================
   ABOUT SECTION
   ============================================= */
.about-section {
    padding: 120px 0;
    background: var(--white);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.lead {
    font-size: 1.35rem;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 2rem;
}

.check-list {
    list-style: none;
    padding: 0;
    max-width: 800px;
    margin: 0 auto 50px;
    text-align: left;
}

.check-list li {
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px 24px;
    background: var(--light-bg);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

.check-list li:hover {
    background: rgba(201, 162, 39, 0.08);
    transform: translateX(10px);
}

.check-list li svg {
    color: var(--secondary-color);
    flex-shrink: 0;
    margin-top: 2px;
}

.personal-card {
    background: var(--light-bg);
    padding: 48px;
    border-radius: var(--border-radius);
    margin-top: 50px;
    border: 1px solid rgba(26, 54, 93, 0.08);
    position: relative;
    overflow: hidden;
}

.personal-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: var(--secondary-color);
}

.personal-card h3 {
    color: var(--primary-color);
    margin-bottom: 16px;
    font-size: 1.5rem;
}

.personal-card p {
    color: var(--text-color);
    font-size: 1.1rem;
}

/* =============================================
   RESOURCES SECTION
   ============================================= */
.resources-section {
    padding: 120px 0;
    background-color: var(--light-bg);
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    max-width: 1000px;
    margin: 0 auto;
}

.resources-grid .resource-card:nth-child(4) {
    grid-column: 2 / 3;
}

.resources-bottom {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-top: 32px;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

.resource-card {
    background: var(--white);
    padding: 48px 32px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    text-align: center;
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
    align-items: center;
}

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

.resource-icon {
    width: 80px;
    height: 80px;
    background: rgba(201, 162, 39, 0.1);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary-color);
    margin-bottom: 24px;
    transition: var(--transition);
}

.resource-card:hover .resource-icon {
    background: var(--secondary-color);
    color: var(--white);
    transform: scale(1.1);
}

.resource-card:hover .resource-icon svg {
    stroke: var(--white);
}

.resource-card h3 {
    font-size: 1.35rem;
    margin-bottom: 16px;
    color: var(--primary-color);
}

.resource-card p {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.7;
    margin: 0;
}

/* =============================================
   CONTACT SECTION
   ============================================= */
.contact-section {
    padding: 120px 0;
    background: var(--white);
}

.contact-wrapper {
    display: flex;
    justify-content: center;
}

.contact-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 32px;
    background: var(--light-bg);
    border-radius: var(--border-radius);
    transition: var(--transition);
    min-width: 280px;
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow);
}

.contact-icon {
    width: 56px;
    height: 56px;
    background: var(--secondary-color);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    flex-shrink: 0;
}

.contact-item h4 {
    margin-bottom: 8px;
    font-size: 1.1rem;
    color: var(--primary-color);
}

.contact-item a {
    display: block;
    color: var(--text-color);
    font-weight: 500;
    margin-bottom: 4px;
}

.contact-item a:hover {
    color: var(--secondary-color);
}

/* =============================================
   FOOTER
   ============================================= */
.site-footer {
    background: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 40px 0;
}

.site-footer p {
    margin: 0;
    opacity: 0.9;
}

/* =============================================
   INTRO SECTION (howto, pricelist)
   ============================================= */
.intro-section {
    padding: 80px 0;
    background: var(--light-bg);
}

.intro-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.intro-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
}

.intro-card .number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    font-family: 'Playfair Display', serif;
}

.intro-card p {
    color: var(--text-light);
    margin-top: 8px;
}

.intro-text {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.intro-text p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.highlight-box {
    background: var(--white);
    border-left: 4px solid var(--secondary-color);
    padding: 24px 32px;
    margin: 30px 0;
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    box-shadow: var(--box-shadow);
}

.highlight-box p {
    margin: 0;
    color: var(--primary-color);
    font-weight: 500;
}

.intro-note {
    padding: 60px 0;
    background: var(--light-bg);
}

.note {
    display: block;
    background: #fff7e6;
    padding: 16px 20px;
    border-left: 4px solid var(--secondary-color);
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    margin: 24px 0;
    text-decoration: none;
    color: var(--text-color);
    transition: var(--transition);
    cursor: pointer;
}

.note:hover {
    background: #ffecc7;
    border-left-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(26, 54, 93, 0.1);
}


.note-info {
    background: #f0f4f8;
    padding: 16px 20px;
    border-left: 4px solid #90a4b8;
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    margin: 24px 0;
    color: var(--text-color);
}

.note-info strong {
    color: var(--primary-color);
}

.note-box {
    max-width: 900px;
    margin: 0 auto;
    background: var(--white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    border-left: 4px solid var(--secondary-color);
}

.note-box p {
    margin-bottom: 1rem;
    color: var(--text-color);
}

.note-box p:last-child {
    margin-bottom: 0;
}

/* =============================================
   WORKFLOW SECTION
   ============================================= */
.workflow-section {
    padding: 100px 0;
    background: var(--white);
}

.workflow-steps {
    max-width: 900px;
    margin: 0 auto;
}

.workflow-step {
    display: flex;
    gap: 30px;
    margin-bottom: 50px;
    position: relative;
}

.workflow-step:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 28px;
    top: 70px;
    width: 2px;
    height: calc(100% - 30px);
    background: linear-gradient(180deg, var(--secondary-color), rgba(201, 162, 39, 0.2));
}

.step-number {
    width: 56px;
    height: 56px;
    background: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    font-size: 1.25rem;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.step-content {
    flex: 1;
    padding-top: 8px;
}

.step-content h3 {
    font-size: 1.4rem;
    margin-bottom: 16px;
    color: var(--primary-color);
}

.step-content p {
    color: var(--text-color);
    margin-bottom: 16px;
}

.step-content ul {
    list-style: none;
    padding: 0;
}

.step-content ul li {
    padding: 10px 0 10px 28px;
    position: relative;
    color: var(--text-color);
}

.step-content ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 18px;
    width: 8px;
    height: 8px;
    background: var(--secondary-color);
    border-radius: 50%;
}

.step-content .nested-list {
    margin-left: 20px;
    margin-top: 8px;
}

.step-content .nested-list li::before {
    width: 6px;
    height: 6px;
    background: var(--gray);
}

.info-box {
    background: var(--light-bg);
    padding: 24px 32px;
    border-radius: var(--border-radius-sm);
    margin: 20px 0;
}

.info-box.important {
    background: rgba(201, 162, 39, 0.1);
    border: 1px solid rgba(201, 162, 39, 0.3);
}

.info-box p {
    margin: 0;
}

/* =============================================
   REASONS SECTION
   ============================================= */
.reasons-section {
    padding: 80px 0;
    background: var(--light-bg);
}

.reasons-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.reason-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.reason-icon {
    width: 50px;
    height: 50px;
    background: rgba(201, 162, 39, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary-color);
    flex-shrink: 0;
}

.reason-card p {
    margin: 0;
    color: var(--text-color);
}

/* =============================================
   TIMELINE SECTION
   ============================================= */
.timeline-section {
    padding: 100px 0;
    background: var(--white);
}

.timeline-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-card {
    background: var(--light-bg);
    padding: 32px;
    border-radius: var(--border-radius);
    text-align: center;
}

.timeline-card .days {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    font-family: 'Playfair Display', serif;
}

.timeline-card .days span {
    font-size: 1rem;
    color: var(--text-light);
    font-family: 'Inter', sans-serif;
    font-weight: 400;
}

.timeline-card h4 {
    margin-top: 12px;
    font-size: 1.1rem;
}

.price-note {
    text-align: center;
    margin-top: 40px;
    padding: 24px;
    background: var(--primary-color);
    border-radius: var(--border-radius);
    color: var(--white);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.price-note p {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 500;
}

/* =============================================
   GUARANTEE SECTION
   ============================================= */
.guarantee-section {
    padding: 100px 0;
    background: var(--primary-color);
    color: var(--white);
}

.guarantee-section .section-title {
    color: var(--white);
}

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

.guarantee-content p {
    font-size: 1.15rem;
    line-height: 1.8;
    opacity: 0.95;
}

.guarantee-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
    color: var(--secondary-color);
}

/* =============================================
   PRICING SECTION
   ============================================= */
.pricing-section {
    padding: 100px 0;
    background: var(--white);
}

.pricing-category {
    margin-bottom: 60px;
}

.pricing-category h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--light-bg);
    display: flex;
    align-items: center;
    gap: 12px;
}

.pricing-category h3 svg {
    color: var(--secondary-color);
}

.pricing-grid {
    display: grid;
    gap: 24px;
}

.price-card {
    background: var(--light-bg);
    border-radius: var(--border-radius);
    padding: 32px;
    display: flex;
    gap: 24px;
    align-items: flex-start;
    transition: var(--transition);
}

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

.price-amount {
    background: var(--secondary-color);
    color: var(--white);
    padding: 16px 20px;
    border-radius: var(--border-radius-sm);
    font-weight: 700;
    font-size: 1.1rem;
    white-space: nowrap;
    flex-shrink: 0;
    text-align: center;
    min-width: 130px;
}

.price-amount span {
    display: block;
    font-size: 0.8rem;
    font-weight: 400;
    opacity: 0.9;
}

.price-details {
    flex: 1;
}

.price-details h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.price-details h4 a {
    color: inherit;
    text-decoration: none;
}

.price-details h4 a:hover {
    text-decoration: underline;
}

.price-details p {
    color: var(--text-light);
    margin: 0;
    line-height: 1.6;
}

.price-breakdown {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px dashed var(--gray);
    font-size: 0.9rem;
    color: var(--text-light);
}

/* =============================================
   PAYMENT SECTION
   ============================================= */
.payment-section {
    padding: 100px 0;
    background: var(--light-bg);
}

.payment-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.payment-card {
    background: var(--white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.payment-card h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.payment-card h3 svg {
    color: var(--secondary-color);
}

.payment-card ul {
    list-style: none;
    padding: 0;
}

.payment-card ul li {
    padding: 12px 0;
    border-bottom: 1px solid var(--light-bg);
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.payment-card ul li:last-child {
    border-bottom: none;
}

.payment-card ul li svg {
    color: var(--secondary-color);
    flex-shrink: 0;
}

.payment-note {
    max-width: 900px;
    margin: 40px auto 0;
    text-align: center;
}

.payment-note p {
    background: var(--white);
    padding: 24px 32px;
    border-radius: var(--border-radius-sm);
    color: var(--text-color);
    margin-bottom: 16px;
}

.payment-note p:last-child {
    margin-bottom: 0;
}

/* =============================================
   FAQ SECTION
   ============================================= */
.faq-section {
    padding: 100px 0;
    background: var(--light-bg);
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.faq-question {
    padding: 28px 32px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.faq-question h3 {
    font-size: 1.15rem;
    margin: 0;
    color: var(--primary-color);
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    flex: 1;
}

.faq-answer {
    max-height: none;
    overflow: visible;
}

.faq-answer-content {
    padding: 0 32px 28px;
    color: var(--text-color);
    line-height: 1.8;
}

.faq-answer-content p {
    margin-bottom: 16px;
}

.faq-answer-content p:last-child {
    margin-bottom: 0;
}

.timeline-list {
    background: var(--light-bg);
    border-radius: var(--border-radius-sm);
    padding: 24px;
    margin-top: 16px;
}

.timeline-list h4 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--primary-color);
    font-family: 'Inter', sans-serif;
}

.timeline-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.timeline-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.timeline-item .label {
    font-weight: 600;
    color: var(--primary-color);
    min-width: 200px;
}

.timeline-item .value {
    color: var(--secondary-color);
    font-weight: 600;
}

/* =============================================
   CTA SECTION
   ============================================= */
.cta-section {
    padding: 100px 0;
    background: var(--primary-color);
    text-align: center;
    color: var(--white);
}

.cta-section h2 {
    color: var(--white);
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 1.15rem;
    opacity: 0.9;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* =============================================
   ABOUT PAGE SPECIFIC
   ============================================= */
.experience-section {
    padding: 100px 0;
    background: var(--white);
}

.experience-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    max-width: 1000px;
    margin: 0 auto;
}

.experience-sidebar {
    text-align: center;
}

.experience-years {
    background: var(--secondary-color);
    color: var(--white);
    padding: 40px;
    border-radius: var(--border-radius);
    margin-bottom: 24px;
}

.experience-years .number {
    font-size: 4rem;
    font-weight: 700;
    font-family: 'Playfair Display', serif;
    line-height: 1;
}

.experience-years p {
    margin-top: 8px;
    opacity: 0.9;
}

.experience-sidebar .stat-card {
    background: var(--light-bg);
    padding: 24px;
    border-radius: var(--border-radius-sm);
    margin-bottom: 16px;
}

.experience-sidebar .stat-card .number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: 'Playfair Display', serif;
}

.experience-sidebar .stat-card p {
    color: var(--text-light);
    margin-top: 4px;
}

.experience-main h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.experience-main p {
    margin-bottom: 16px;
    color: var(--text-color);
}

.duties-list {
    list-style: none;
    padding: 0;
    margin: 24px 0;
}

.duties-list li {
    padding: 12px 0 12px 28px;
    position: relative;
    color: var(--text-color);
    border-bottom: 1px solid var(--light-bg);
}

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

.duties-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 20px;
    width: 8px;
    height: 8px;
    background: var(--secondary-color);
    border-radius: 50%;
}

.patents-section {
    padding: 100px 0;
    background: var(--light-bg);
}

.patents-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.patents-card {
    background: var(--white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.patents-card h3 {
    font-size: 1.3rem;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.patents-card h3 svg {
    color: var(--secondary-color);
}

.patents-list {
    list-style: none;
    padding: 0;
}

.patents-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--light-bg);
    color: var(--text-color);
    font-size: 0.95rem;
}

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

.patents-list li strong {
    color: var(--primary-color);
}

.online-section {
    padding: 100px 0;
    background: var(--white);
}

.online-content {
    max-width: 900px;
    margin: 0 auto;
}

.online-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 50px;
}

.online-stat {
    text-align: center;
    padding: 32px;
    background: var(--light-bg);
    border-radius: var(--border-radius);
    min-width: 200px;
}

.online-stat .number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    font-family: 'Playfair Display', serif;
}

.online-stat p {
    color: var(--text-light);
    margin-top: 8px;
}

.topics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.topic-item {
    background: var(--light-bg);
    padding: 16px 20px;
    border-radius: var(--border-radius-sm);
    color: var(--text-color);
    font-size: 0.95rem;
    transition: var(--transition);
}

.topic-item:hover {
    background: rgba(201, 162, 39, 0.1);
    transform: translateY(-2px);
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
    .resources-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .resources-bottom {
        flex-direction: column;
        align-items: center;
    }

    .resources-bottom .resource-card {
        width: 100%;
        max-width: 400px;
    }

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

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

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

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

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

@media (max-width: 768px) {
    .navbar .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--white);
        flex-direction: column;
        padding: 24px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        gap: 8px;
    }

    .navbar .nav-links.active {
        display: flex;
    }

    .nav-links a {
        padding: 14px 20px;
        width: 100%;
        text-align: center;
    }

    .hamburger {
        display: block;
    }

    .hero-title {
        font-size: 2.25rem;
    }

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

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .page-header h1 {
        font-size: 2.25rem;
    }

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

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

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

    .resources-bottom {
        margin-top: 32px;
    }

    .contact-info {
        flex-direction: column;
        align-items: center;
    }

    .contact-item {
        width: 100%;
        max-width: 400px;
    }

    .workflow-step {
        flex-direction: column;
        gap: 20px;
    }

    .workflow-step:not(:last-child)::after {
        display: none;
    }

    .reasons-grid,
    .timeline-grid,
    .payment-grid {
        grid-template-columns: 1fr;
    }

    .price-card {
        flex-direction: column;
    }

    .price-amount {
        width: 100%;
    }

    .faq-question {
        padding: 20px 24px 12px;
    }

    .faq-question h3 {
        font-size: 1rem;
    }

    .faq-answer-content {
        padding: 0 24px 24px;
    }

    .timeline-item {
        flex-direction: column;
        gap: 4px;
    }

    .timeline-item .label {
        min-width: auto;
    }

    .online-stats {
        flex-direction: column;
        gap: 20px;
    }

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.85rem;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* =============================================
   SERVICE PAGES (invention, model, industrial_sample, programs)
   ============================================= */
.content-section {
    padding: 80px 0;
    background: var(--white);
}

.content-section:nth-child(even) {
    background: var(--light-bg);
}

.content-container {
    max-width: 900px;
    margin: 0 auto;
}

.lead-text {
    font-size: 1.25rem;
    color: var(--primary-color);
    line-height: 1.8;
    margin-bottom: 2rem;
    font-weight: 500;
}

.content-block {
    margin-bottom: 40px;
}

.content-block h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.content-block p {
    margin-bottom: 16px;
    color: var(--text-color);
    line-height: 1.8;
}

/* -- Info card -- */
.info-card {
    background: var(--light-bg);
    padding: 32px;
    border-radius: var(--border-radius);
    margin: 32px 0;
    border-left: 4px solid var(--secondary-color);
}

.content-section:nth-child(even) .info-card {
    background: var(--white);
}

.info-card h4 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--primary-color);
}

.info-card p {
    margin: 0 0 12px;
    color: var(--text-color);
}

.info-card p:last-child {
    margin-bottom: 0;
}

/* -- Conditions grid -- */
.conditions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin: 32px 0;
}

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

.condition-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
}

.condition-card h4 {
    font-size: 1.15rem;
    margin-bottom: 12px;
    color: var(--secondary-color);
}

.condition-card p {
    margin: 0;
    color: var(--text-color);
    font-size: 0.95rem;
}

/* -- Cost list -- */
.cost-list {
    list-style: none;
    padding: 0;
    margin: 24px 0;
}

.cost-list li {
    padding: 16px 0 16px 32px;
    position: relative;
    color: var(--text-color);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.cost-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 24px;
    width: 10px;
    height: 10px;
    background: var(--secondary-color);
    border-radius: 50%;
}

/* -- Price summary -- */
.price-summary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin: 32px 0 24px;
}

.price-summary-card {
    flex: 1;
    max-width: 260px;
    background: var(--white);
    border: 2px solid var(--secondary-color);
    border-radius: var(--border-radius);
    padding: 20px 24px;
    text-align: center;
    text-decoration: none;
    transition: var(--transition);
}

.price-summary-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(201, 162, 39, 0.2);
}

.price-summary-label {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 6px;
}

.price-summary-amount {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: 'Inter', sans-serif;
}

.price-summary-amount span {
    font-size: 1rem;
    font-weight: 500;
    color: var(--secondary-color);
}

.price-summary-plus {
    font-size: 1.8rem;
    font-weight: 300;
    color: var(--secondary-color);
    flex-shrink: 0;
}

/* -- Timing grid -- */
.timing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin: 32px 0;
}

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

.timing-card {
    background: var(--primary-color);
    color: var(--white);
    padding: 24px;
    border-radius: var(--border-radius);
    text-align: center;
}

.timing-card .time {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 8px;
}

.timing-card p {
    margin: 0;
    opacity: 0.9;
    font-size: 0.9rem;
}

/* -- Timeline steps -- */
.timeline-steps {
    margin: 40px 0;
}

.timeline-step {
    display: flex;
    gap: 24px;
    margin-bottom: 40px;
    position: relative;
}

.timeline-step:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 24px;
    top: 60px;
    width: 2px;
    height: calc(100% - 20px);
    background: linear-gradient(180deg, var(--secondary-color), rgba(201, 162, 39, 0.2));
}

.step-num {
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.step-body {
    flex: 1;
    padding-top: 8px;
}

.step-body h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.step-body p {
    color: var(--text-color);
    margin-bottom: 12px;
    line-height: 1.7;
}

.step-body ul {
    list-style: none;
    padding: 0;
    margin-top: 16px;
}

.step-body ul li {
    padding: 8px 0 8px 24px;
    position: relative;
    color: var(--text-color);
}

.step-body ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 16px;
    width: 6px;
    height: 6px;
    background: var(--secondary-color);
    border-radius: 50%;
}

/* -- Docs grid -- */
.docs-grid {
    display: grid;
    gap: 20px;
    margin: 32px 0;
}

.doc-item {
    background: var(--white);
    padding: 24px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: flex-start;
    gap: 16px;
    box-shadow: var(--box-shadow);
}

.doc-icon {
    width: 48px;
    height: 48px;
    background: rgba(201, 162, 39, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary-color);
    flex-shrink: 0;
}

.doc-content h4 {
    font-size: 1.05rem;
    margin-bottom: 8px;
    color: var(--primary-color);
    font-family: 'Inter', sans-serif;
}

.doc-content p {
    margin: 0 0 12px;
    color: var(--text-light);
    font-size: 0.9rem;
}

.doc-content p:last-of-type {
    margin-bottom: 0;
}

.doc-content .copies {
    display: inline-block;
    background: var(--secondary-color);
    color: var(--white);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-top: 8px;
}

.doc-content .download-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 12px;
    padding: 8px 16px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
}

.doc-content .download-link:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
}

.doc-content .download-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 12px;
}

/* -- Download section -- */
.download-section {
    margin-top: 40px;
    padding: 32px;
    background: var(--light-bg);
    border-radius: var(--border-radius);
    text-align: center;
}

.download-section h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
}

.download-btn:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(26, 54, 93, 0.25);
}

/* -- Invention: two columns -- */
.two-columns {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    margin: 32px 0;
}

.column-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.content-section:nth-child(even) .column-card {
    background: var(--white);
}

.column-card h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.column-card h4 svg {
    color: var(--secondary-color);
}

.column-card ul {
    list-style: none;
    padding: 0;
}

.column-card ul li {
    padding: 10px 0 10px 24px;
    position: relative;
    color: var(--text-color);
    border-bottom: 1px solid var(--light-bg);
}

.column-card ul li:last-child {
    border-bottom: none;
}

.column-card ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 18px;
    width: 8px;
    height: 8px;
    background: var(--secondary-color);
    border-radius: 50%;
}

.column-card.negative ul li::before {
    background: var(--gray);
}

/* -- Model: advantages -- */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin: 32px 0;
}

.advantage-card {
    background: var(--white);
    padding: 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    border-top: 4px solid var(--secondary-color);
}

.advantage-card h4 {
    font-size: 1rem;
    margin-bottom: 8px;
    color: var(--primary-color);
    font-family: 'Inter', sans-serif;
}

.advantage-card p {
    margin: 0;
    color: var(--text-light);
    font-size: 0.9rem;
}

.not-patented-list {
    background: var(--light-bg);
    padding: 32px;
    border-radius: var(--border-radius);
    margin: 32px 0;
}

.content-section:nth-child(even) .not-patented-list {
    background: var(--white);
}

.not-patented-list h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.not-patented-list h4 svg {
    color: var(--gray);
}

.not-patented-list ul {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.not-patented-list ul li {
    padding: 12px 16px 12px 32px;
    position: relative;
    color: var(--text-color);
    background: rgba(0, 0, 0, 0.02);
    border-radius: var(--border-radius-sm);
}

.not-patented-list ul li::before {
    content: '\2715';
    position: absolute;
    left: 12px;
    color: var(--gray);
    font-size: 0.8rem;
}

/* -- Industrial sample -- */
.patented-box {
    background: var(--light-bg);
    padding: 32px;
    border-radius: var(--border-radius);
    margin: 32px 0;
    border-left: 4px solid var(--secondary-color);
}

.content-section:nth-child(even) .patented-box {
    background: var(--white);
}

.patented-box h4 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--primary-color);
}

.patented-box p {
    margin-bottom: 12px;
    color: var(--text-color);
}

.types-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin: 32px 0;
}

.type-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    border-top: 4px solid var(--secondary-color);
}

.type-card h4 {
    font-size: 1.15rem;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.type-card p {
    margin: 0;
    color: var(--text-light);
    font-size: 0.95rem;
}

.features-box {
    background: rgba(201, 162, 39, 0.1);
    padding: 24px 32px;
    border-radius: var(--border-radius);
    margin: 32px 0;
}

.features-box p {
    margin: 0;
    color: var(--primary-color);
}

/* -- Programs -- */
.definitions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin: 32px 0;
}

.definition-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    border-top: 4px solid var(--secondary-color);
}

.definition-card h4 {
    font-size: 1.15rem;
    margin-bottom: 16px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.definition-card h4 svg {
    color: var(--secondary-color);
}

.definition-card p {
    margin: 0;
    color: var(--text-color);
    line-height: 1.7;
}

.warning-card {
    background: rgba(201, 162, 39, 0.1);
    padding: 24px 32px;
    border-radius: var(--border-radius);
    margin: 32px 0;
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.warning-card svg {
    color: var(--secondary-color);
    flex-shrink: 0;
    margin-top: 4px;
}

.warning-card p {
    margin: 0;
    color: var(--primary-color);
}

.price-single {
    display: flex;
    justify-content: center;
    margin: 32px 0 24px;
}

.price-single-card {
    background: var(--white);
    border: 2px solid var(--secondary-color);
    border-radius: var(--border-radius);
    padding: 20px 48px;
    text-align: center;
    text-decoration: none;
    transition: var(--transition);
}

.price-single-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(201, 162, 39, 0.2);
}

.price-single-label {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 6px;
}

.price-single-amount {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: 'Inter', sans-serif;
}

.price-single-amount span {
    font-size: 1rem;
    font-weight: 500;
    color: var(--secondary-color);
}

.timing-highlight {
    background: var(--primary-color);
    color: var(--white);
    padding: 32px;
    border-radius: var(--border-radius);
    text-align: center;
    margin: 32px 0;
}

.timing-highlight .time {
    font-size: 2rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 8px;
}

.timing-highlight p {
    margin: 0;
    opacity: 0.9;
    font-size: 1.1rem;
}

.flowchart {
    background: var(--light-bg);
    padding: 40px;
    border-radius: var(--border-radius);
    margin: 40px 0;
}

.content-section:nth-child(even) .flowchart {
    background: var(--white);
}

.flowchart h4 {
    text-align: center;
    font-size: 1.3rem;
    margin-bottom: 32px;
    color: var(--primary-color);
}

.flow-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-width: 500px;
    margin: 0 auto;
}

.flow-step {
    display: flex;
    align-items: center;
    gap: 20px;
}

.flow-step-box {
    flex: 1;
    background: var(--white);
    padding: 20px 24px;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--box-shadow);
    text-align: center;
    font-weight: 500;
    color: var(--primary-color);
    border-left: 4px solid var(--secondary-color);
}

.flow-arrow {
    display: flex;
    justify-content: center;
    padding: 12px 0;
}

.flow-arrow svg {
    color: var(--secondary-color);
}

.sub-section {
    margin-top: 24px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.02);
    border-radius: var(--border-radius-sm);
}

.sub-section h5 {
    font-size: 0.95rem;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.sub-section p {
    font-size: 0.9rem;
}

/* -- Service pages responsive -- */
@media (max-width: 1024px) {
    .conditions-grid.cols-3,
    .timing-grid.cols-3,
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .two-columns,
    .conditions-grid,
    .conditions-grid.cols-3,
    .timing-grid,
    .timing-grid.cols-3,
    .advantages-grid,
    .types-grid,
    .definitions-grid {
        grid-template-columns: 1fr;
    }

    .not-patented-list ul {
        grid-template-columns: 1fr;
    }

    .timeline-step {
        flex-direction: column;
        gap: 16px;
    }

    .timeline-step:not(:last-child)::after {
        display: none;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .download-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .doc-content .download-links {
        flex-direction: column;
    }

    .doc-content .download-link {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .price-summary {
        flex-direction: column;
    }

    .price-summary-plus {
        transform: rotate(90deg);
    }

    .price-summary-card {
        max-width: 100%;
        width: 100%;
    }
}

/* =============================================
   ARTICLE PAGES
   ============================================= */
.article-section {
    padding: 60px 0 80px;
    background: var(--white);
}

.article-container {
    max-width: 860px;
    margin: 0 auto;
}

.article-lead {
    font-size: 1.1rem;
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.article-container .lead {
    font-size: 1.1rem;
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

/* -- Breadcrumbs -- */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

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

.breadcrumbs a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.breadcrumbs span[aria-hidden] {
    color: var(--gray);
}

/* -- Article meta (карточки с иконками) -- */
.article-meta {
    list-style: none;
    padding: 0;
    margin: 0 0 2rem;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.article-meta li {
    background: var(--white);
    border: 1px solid #e2e8f0;
    border-radius: var(--border-radius);
    padding: 24px 20px;
    text-align: center;
    box-shadow: 0 2px 12px rgba(26, 54, 93, 0.06);
}

.article-meta .meta-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 14px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.article-meta .meta-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--white);
    fill: none;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.article-meta .meta-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--secondary-color);
    margin-bottom: 6px;
}

.article-meta .meta-value {
    font-size: 0.92rem;
    color: var(--text-color);
    line-height: 1.5;
}

/* -- CTA box -- */
.cta-box {
    background: var(--light-bg);
    padding: 20px 24px;
    border-left: 4px solid var(--primary-color);
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    margin: 24px 0;
}

.cta-box p {
    margin: 0;
    color: var(--text-color);
    line-height: 1.7;
}

.cta-box p + p {
    margin-top: 8px;
}

.cta-box a {
    color: var(--secondary-color);
    font-weight: 600;
    text-decoration: none;
}

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

/* -- TOC -- */
.toc {
    background: var(--light-bg);
    padding: 20px 24px;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
    border-left: 4px solid var(--secondary-color);
}

.toc h2 {
    font-size: 1rem !important;
    margin: 0 0 10px !important;
    padding: 0 !important;
    border: none !important;
    color: var(--primary-color);
    font-family: 'Inter', sans-serif;
}

.toc strong {
    display: block;
    margin-bottom: 10px;
    color: var(--primary-color);
    font-size: 1rem;
}

.toc ol,
.toc ul {
    margin: 0;
    padding-left: 20px;
}

.toc ol li,
.toc ul li {
    margin-bottom: 6px;
}

.toc a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.95rem;
}

.toc a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* -- Pillars -- */
.pillars {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 0 0 2rem;
}

.pillars a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 16px;
    background: var(--white);
    border-radius: 20px;
    color: var(--secondary-color);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: 2px solid var(--secondary-color);
    cursor: pointer;
}

.pillars a::after {
    content: '\2192';
    font-size: 0.95rem;
}

.pillars a:hover {
    background: var(--secondary-color);
    color: var(--white);
}

/* -- CTA block (article) -- */
.cta {
    background: var(--light-bg);
    padding: 20px 24px;
    border-left: 4px solid var(--primary-color);
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    margin: 24px 0;
}

.cta a {
    color: var(--secondary-color);
    font-weight: 600;
    text-decoration: none;
}

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

/* -- Columns -- */
.columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin: 16px 0;
}

.columns h4 {
    font-size: 0.95rem;
    color: var(--primary-color);
    margin: 0 0 8px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
}

/* -- FAQ details/summary (articles) -- */
.article-container details {
    border-bottom: 1px solid rgba(26, 54, 93, 0.1);
}

.article-container summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1rem;
    padding: 14px 4px;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
}

.article-container summary::-webkit-details-marker {
    display: none;
}

.article-container summary::before {
    content: '+';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(201, 162, 39, 0.12);
    color: var(--secondary-color);
    font-size: 1.1rem;
    flex-shrink: 0;
    transition: var(--transition);
}

.article-container details[open] summary::before {
    content: '\2212';
    background: var(--secondary-color);
    color: var(--white);
}

.article-container details p {
    padding: 4px 4px 16px 36px;
    margin: 0;
    color: var(--text-color);
    line-height: 1.8;
}

/* -- Article pre/code -- */
.article-container pre {
    background: var(--light-bg);
    border: 1px solid rgba(26, 54, 93, 0.1);
    padding: 16px 18px;
    border-radius: var(--border-radius-sm);
    overflow: auto;
    font-size: 0.88rem;
    line-height: 1.7;
    margin: 16px 0;
}

.article-container code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Courier New", monospace;
    color: var(--text-color);
}

/* -- Article styled lists (ТЗ / Чек-лист) -- */
.article-container .styled-list {
    list-style: none;
    padding: 0;
    margin: 16px 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.article-container .styled-list > li {
    padding: 18px 20px;
    background: var(--light-bg);
    border-radius: var(--border-radius-sm);
}

.article-container .styled-list .item-header {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.article-container .styled-list .num {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
}

.article-container .styled-list .item-title {
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--primary-color);
    line-height: 1.5;
}

.article-container .styled-list .item-text {
    font-size: 0.92rem;
    color: var(--text-color);
    line-height: 1.6;
}

.article-container .styled-list .item-sub {
    list-style: none;
    padding: 8px 0 0 44px;
    margin: 0;
}

.article-container .styled-list .item-sub li {
    position: relative;
    padding-left: 16px;
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 2px;
}

.article-container .styled-list .item-sub li::before {
    content: "\2014";
    position: absolute;
    left: 0;
    color: var(--gray);
}

/* -- Article footer -- */
.article-footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px solid var(--light-bg);
    font-size: 0.9rem;
}

.article-footer p {
    margin-bottom: 0.75rem;
    color: var(--text-color);
    line-height: 1.7;
}

.article-footer a {
    color: var(--secondary-color);
    font-weight: 600;
    text-decoration: none;
}

.article-footer a:hover {
    text-decoration: underline;
}

.disclaimer {
    color: var(--text-light);
    font-size: 0.85rem;
    font-style: italic;
}

/* -- Article typography -- */
.article-container h2 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--light-bg);
}

.article-container h3 {
    font-size: 1.15rem;
    color: var(--primary-color);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    font-family: 'Inter', sans-serif;
}

.article-container p {
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.article-container ul,
.article-container ol {
    padding-left: 24px;
    margin-bottom: 1rem;
}

.article-container ul li,
.article-container ol li {
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 8px;
}

/* -- Article tables -- */
.article-container table {
    border-collapse: collapse;
    width: 100%;
    margin: 20px 0;
    font-size: 0.95rem;
}

.article-container th,
.article-container td {
    border: 1px solid rgba(26, 54, 93, 0.12);
    padding: 12px 14px;
    vertical-align: top;
    text-align: left;
    color: var(--text-color);
}

.article-container th {
    background: var(--light-bg);
    color: var(--primary-color);
    font-weight: 600;
}

.article-container tr:hover td {
    background: rgba(247, 250, 252, 0.7);
}

/* -- Utilities -- */
.muted {
    color: var(--text-light);
}

.small {
    font-size: 0.88rem;
}

/* -- Article note overrides -- */
.article-container .note p {
    margin: 0;
    line-height: 1.7;
}

.article-container .note p + p {
    margin-top: 8px;
}

/* -- Articles responsive -- */
@media (max-width: 768px) {
    .article-container table {
        font-size: 0.85rem;
    }

    .article-container th,
    .article-container td {
        padding: 8px 10px;
    }

    .article-meta {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .pillars {
        gap: 8px;
    }
}

/* =============================================
   CONTACT PAGE
   ============================================= */
.contact-page-section {
    padding: 100px 0;
    background: var(--light-bg);
}

.contact-main-card {
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
    overflow: hidden;
}

.contact-header {
    background: var(--primary-color);
    padding: 48px;
    text-align: center;
    color: var(--white);
}

.contact-header h2 {
    color: var(--white);
    font-size: 2rem;
    margin-bottom: 8px;
}

.contact-header p {
    opacity: 0.9;
    font-size: 1.1rem;
}

.contact-body {
    padding: 48px;
}

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

.contact-block {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 24px;
    background: var(--light-bg);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

.contact-block:hover {
    transform: translateY(-4px);
    box-shadow: var(--box-shadow);
}

.contact-block.full-width {
    grid-column: 1 / -1;
}

.contact-block-icon {
    width: 56px;
    height: 56px;
    background: var(--secondary-color);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    flex-shrink: 0;
}

.contact-block-content h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    color: var(--primary-color);
    font-family: 'Inter', sans-serif;
}

.contact-block-content a {
    display: block;
    color: var(--text-color);
    font-weight: 500;
    margin-bottom: 8px;
    font-size: 1.05rem;
}

.contact-block-content a:last-child {
    margin-bottom: 0;
}

.contact-block-content a:hover {
    color: var(--secondary-color);
}

.contact-note {
    margin-top: 40px;
    padding: 24px;
    background: rgba(201, 162, 39, 0.1);
    border-radius: var(--border-radius-sm);
    border-left: 4px solid var(--secondary-color);
    text-align: center;
}

.contact-note p {
    margin: 0;
    color: var(--primary-color);
    font-weight: 500;
}

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

    .contact-header,
    .contact-body {
        padding: 32px 24px;
    }
}

/* =============================================
   ARTICLES LIST PAGE
   ============================================= */
.articles-section {
    padding: 60px 0 80px;
    background: var(--white);
}

.articles-category-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--secondary-color);
}

.articles-category:first-child {
    margin-top: 48px;
}

.articles-category + .articles-category {
    margin-top: 56px;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 28px;
}

.article-card {
    display: flex;
    flex-direction: column;
    background: var(--white);
    border-radius: var(--border-radius);
    border: none;
    padding: 0;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

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

.article-card-accent {
    height: 5px;
    background: linear-gradient(90deg, var(--secondary-color), var(--secondary-light));
}

.article-card-body {
    padding: 28px 28px 32px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.article-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--white);
    background: var(--secondary-color);
    padding: 5px 12px;
    border-radius: var(--border-radius-sm);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    align-self: flex-start;
}

.article-card h2 {
    font-size: 1.15rem;
    color: var(--primary-color);
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    line-height: 1.5;
    margin: 0 0 14px;
}

.article-card p {
    font-size: 0.92rem;
    color: var(--text-light);
    line-height: 1.75;
    margin: 0;
    flex-grow: 1;
}

.article-read-more {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--secondary-color);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--light-bg);
}

.article-read-more::after {
    content: '\2192';
    transition: var(--transition);
    font-size: 1.1rem;
}

.article-card:hover .article-read-more {
    color: var(--primary-color);
}

.article-card:hover .article-read-more::after {
    transform: translateX(6px);
}

@media (max-width: 1024px) {
    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .articles-grid {
        grid-template-columns: 1fr;
    }
}