:root {
    --primary: #FF6B35;
    --primary-dark: #E85A2B;
    --secondary: #F7931E;
    --accent: #FFD700;
    --purple: #8B5CF6;
    --blue: #3B82F6;
    --pink: #EC4899;
    --teal: #14B8A6;
    --dark: #1A1A1A;
    --dark-light: #2D2D2D;
    --gray: #6B7280;
    --gray-light: #F3F4F6;
    --white: #FFFFFF;
    --gradient-primary: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
    --gradient-purple: linear-gradient(135deg, #8B5CF6 0%, #EC4899 100%);
    --gradient-blue: linear-gradient(135deg, #3B82F6 0%, #14B8A6 100%);
    --gradient-warm: linear-gradient(135deg, #FF6B35 0%, #EC4899 50%, #8B5CF6 100%);
    --gradient-dark: linear-gradient(135deg, #1A1A1A 0%, #2D2D2D 100%);
    --bg-light: linear-gradient(180deg, #FAFAFA 0%, #FFFFFF 100%);
    --bg-gradient-1: linear-gradient(135deg, #FFF5F0 0%, #F0F9FF 100%);
    --bg-gradient-2: linear-gradient(135deg, #F5F3FF 0%, #FEF3C7 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--dark);
    line-height: 1.7;
    overflow-x: hidden;
    background-color: var(--white);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(18px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav.scrolled {
    background: linear-gradient(90deg, rgba(255, 107, 53, 0.96) 0%, rgba(247, 147, 30, 0.96) 40%, rgba(236, 72, 153, 0.96) 100%);
    box-shadow: var(--shadow-md);
}

.nav__logo {
    font-size: 28px;
    font-weight: 800;
    color: var(--white);
    text-decoration: none;
    letter-spacing: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav__logo:hover {
    transform: scale(1.03);
    opacity: 0.9;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 64, 175, 0.88) 40%, rgba(236, 72, 153, 0.82) 100%),
                url('../images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    /* Чтобы навигация не перекрывала профиль на старте */
    padding-top: 120px;
    padding-bottom: 80px;
    box-sizing: border-box;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(255, 107, 53, 0.15) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

.hero__content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    padding: 0 20px;
    text-align: center;
    animation: fadeInUp 1s ease-out;
}

/* Hero author profile */
.hero__profile {
    display: inline-flex;
    align-items: center;
    gap: 18px;
    padding: 14px 22px;
    margin: 0 auto 32px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(18px);
    max-width: 320px;
    width: 100%;
}

.hero__avatar-wrapper {
    width: 82px;
    height: 82px;
    border-radius: 50%;
    padding: 3px;
    background: linear-gradient(135deg, #FF6B35 0%, #F7931E 40%, #EC4899 80%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

.hero__avatar {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid #FFFFFF;
}

.hero__profile-text {
    text-align: left;
    color: #FFFFFF;
    font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.hero__name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 2px;
}

.hero__role {
    font-size: 14px;
    opacity: 0.9;
}

.hero__meta {
    margin-top: 6px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    font-size: 12px;
}

.hero__meta-pill {
    padding: 2px 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.18);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.hero__meta-pill-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #22C55E;
}

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

.hero__title {
    font-family: 'Manrope', sans-serif;
    font-size: clamp(40px, 7vw, 72px);
    font-weight: 800;
    color: var(--white);
    margin-bottom: 24px;
    line-height: 1.1;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    letter-spacing: -0.02em;
}

.hero__descr {
    font-size: clamp(18px, 2.5vw, 24px);
    font-weight: 400;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 40px;
    line-height: 1.6;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero__social {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 48px;
    flex-wrap: wrap;
}

.hero__social a {
    display: inline-flex;
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    align-items: center;
    justify-content: center;
    border: 2px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.hero__social a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.hero__social a:hover {
    transform: translateY(-4px) scale(1.1);
    border-color: transparent;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.hero__social a:hover::before {
    opacity: 1;
}

.hero__social a[aria-label="Telegram"]::before {
    background: linear-gradient(135deg, #0088cc 0%, #229ED9 100%);
}

.hero__social a[aria-label="YouTube"]::before {
    background: linear-gradient(135deg, #FF0000 0%, #CC0000 100%);
}

.hero__social a[aria-label="Instagram"]::before {
    background: linear-gradient(135deg, #E4405F 0%, #C13584 50%, #833AB4 100%);
}

.hero__social a:hover {
    background: transparent;
}

.hero__social svg {
    width: 28px;
    height: 28px;
    fill: var(--white);
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
}

.hero__social a:hover svg {
    transform: scale(1.1);
}

.btn {
    display: inline-block;
    padding: 18px 48px;
    background: var(--gradient-primary);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 18px;
    transition: all 0.3s ease;
    box-shadow: 0 8px 24px rgba(255, 107, 53, 0.4);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(255, 107, 53, 0.5);
}

.btn:active {
    transform: translateY(0);
}

.btn--orange {
    background: var(--gradient-primary);
    box-shadow: 0 8px 24px rgba(255, 107, 53, 0.4);
}

.btn--orange:hover {
    box-shadow: 0 12px 32px rgba(255, 107, 53, 0.5);
}

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

/* Section */
.section {
    padding: 120px 0;
    position: relative;
}

.section--light {
    background: var(--bg-gradient-1);
    position: relative;
}

.section--light::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 107, 53, 0.2), transparent);
}

.section--dark {
    background: linear-gradient(135deg, #1A1A1A 0%, #2D2D2D 50%, #1A1A1A 100%);
    color: var(--white);
    position: relative;
}

.section--dark::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(255, 107, 53, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.section--colorful {
    background: var(--bg-gradient-2);
    position: relative;
}

.section__title {
    font-family: 'Manrope', sans-serif;
    font-size: clamp(36px, 5.5vw, 56px);
    text-align: center;
    margin-bottom: 48px;
    font-weight: 800;
    position: relative;
    display: inline-block;
    width: 100%;
    background: var(--gradient-warm);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.section--dark .section__title {
    background: linear-gradient(135deg, #FFFFFF 0%, #FFD700 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section__title::after {
    content: '';
    position: absolute;
    bottom: -16px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 5px;
    background: var(--gradient-primary);
    border-radius: 10px;
    opacity: 0.8;
}

.section__descr {
    font-size: 18px;
    max-width: 800px;
    margin: 60px auto 0;
    text-align: left;
    color: var(--gray);
    line-height: 1.8;
}

.section--dark .section__descr {
    color: rgba(255, 255, 255, 0.9);
}

.section__descr ul {
    margin: 24px 0;
    padding-left: 24px;
}

.section__descr li {
    margin: 16px 0;
    font-size: 18px;
    line-height: 1.8;
}

.section__descr strong {
    color: var(--primary);
    font-weight: 600;
}

.section--dark .section__descr strong {
    color: var(--accent);
}

/* Combined Slider */
.combined-slider {
    margin: 60px 0;
    position: relative;
}

.slider-tabs {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.slider-tab {
    padding: 16px 32px;
    background: var(--white);
    border: 2px solid var(--gray-light);
    border-radius: 50px;
    font-size: 18px;
    font-weight: 600;
    color: var(--gray);
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Manrope', sans-serif;
}

.slider-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.slider-tab.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.slider-content {
    display: none;
}

.slider-content.active {
    display: block;
}

/* Splide customization */
.splide {
    max-width: 1000px;
    margin: 0 auto;
}

.splide__track {
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.splide__slide img {
    width: 100%;
    height: 600px;
    object-fit: cover;
    display: block;
}

.splide__arrow {
    background: var(--white);
    border: 2px solid var(--gray-light);
    width: 56px;
    height: 56px;
    opacity: 1;
    box-shadow: var(--shadow-sm);
}

.splide__arrow:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.splide__arrow svg {
    fill: var(--dark);
    width: 12px;
    height: 20px;
}

.splide__arrow:hover svg {
    fill: var(--white);
}

.splide__pagination {
    bottom: -40px;
}

.splide__pagination__page {
    background: var(--gray-light);
    width: 12px;
    height: 12px;
    margin: 0 6px;
}

.splide__pagination__page.is-active {
    background: var(--gradient-primary);
    transform: scale(1.3);
}

/* Divider */
.divider {
    text-align: center;
    padding: 80px 0;
    background: var(--bg-gradient-2);
    color: var(--dark);
    position: relative;
    overflow: hidden;
    margin-top: -40px;
    border-radius: 48px 48px 0 0;
}

.divider::before {
    content: '';
    position: absolute;
    top: -20%;
    left: -10%;
    right: -10%;
    bottom: -40%;
    background: radial-gradient(circle at 50% 0%, rgba(255, 107, 53, 0.18) 0%, transparent 55%);
}

.divider__line {
    width: 120px;
    height: 2px;
    background: var(--gradient-primary);
    margin: 24px auto;
    border-radius: 1px;
}

.divider__text {
    font-size: clamp(22px, 3.5vw, 32px);
    font-family: 'Manrope', sans-serif;
    font-weight: 700;
    color: var(--dark);
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.5;
    letter-spacing: -0.01em;
}

/* Problems Cards */
.problems {
    max-width: 1200px;
    margin: 60px auto 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.problem-card {
    padding: 32px;
    background: var(--white);
    border-radius: 24px;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.problem-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.problem-card:nth-child(1)::before {
    background: var(--gradient-primary);
}

.problem-card:nth-child(2)::before {
    background: var(--gradient-purple);
}

.problem-card:nth-child(3)::before {
    background: var(--gradient-blue);
}

.problem-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 107, 53, 0.3);
}

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

.problem-card__emoji {
    font-size: 48px;
    margin-bottom: 16px;
    display: block;
}

.problem-card__title {
    font-family: 'Manrope', sans-serif;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--dark);
    line-height: 1.3;
}

.problem-card__text {
    font-size: 16px;
    color: var(--gray);
    line-height: 1.7;
}

/* Questions List */
.questions {
    max-width: 1200px;
    margin: 60px auto 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.question-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
    padding: 32px 24px;
    background: var(--white);
    border-radius: 24px;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.question-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.question-item:nth-child(1)::before {
    background: var(--gradient-primary);
}

.question-item:nth-child(2)::before {
    background: var(--gradient-purple);
}

.question-item:nth-child(3)::before {
    background: var(--gradient-blue);
}

.question-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 107, 53, 0.3);
}

.question-item:hover::before {
    transform: scaleX(1);
}

.question-item__icon {
    width: 64px;
    height: 64px;
    flex-shrink: 0;
    border-radius: 16px;
    background: var(--gray-light);
    padding: 12px;
    object-fit: contain;
}

.question-item__content {
    flex: 1;
    width: 100%;
}

.question-item__title {
    font-family: 'Manrope', sans-serif;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--dark);
}

.question-item__text {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.6;
}

/* Cards */
.cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin: 60px 0 60px;
}

.card {
    text-align: center;
    padding: 40px 32px;
    background: var(--white);
    border-radius: 24px;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.card:nth-child(1)::before {
    background: var(--gradient-primary);
}

.card:nth-child(2)::before {
    background: var(--gradient-purple);
}

.card:nth-child(3)::before {
    background: var(--gradient-blue);
}

.card:nth-child(4)::before {
    background: linear-gradient(135deg, #EC4899 0%, #F7931E 100%);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 107, 53, 0.3);
}

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

.card__icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
    border-radius: 20px;
    background: linear-gradient(135deg, #FFF5F0 0%, #F0F9FF 100%);
    padding: 20px;
    object-fit: contain;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:nth-child(1) .card__icon {
    background: linear-gradient(135deg, #FFF5F0 0%, #FFE5D9 100%);
}

.card:nth-child(2) .card__icon {
    background: linear-gradient(135deg, #F5F3FF 0%, #EDE9FE 100%);
}

.card:nth-child(3) .card__icon {
    background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
}

.card:nth-child(4) .card__icon {
    background: linear-gradient(135deg, #FDF2F8 0%, #FCE7F3 100%);
}

.card:hover .card__icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-md);
}

.card__title {
    font-family: 'Manrope', sans-serif;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--dark);
}

.card__text {
    font-size: 16px;
    color: var(--gray);
    line-height: 1.7;
}

/* Footer Section */
.footer-section {
    text-align: center;
    padding: 100px 0;
    background: var(--bg-gradient-1);
    color: var(--dark);
    position: relative;
    overflow: hidden;
    margin-top: -40px;
    border-radius: 48px 48px 0 0;
}

.footer-section::before {
    content: '';
    position: absolute;
    top: -30%;
    left: -10%;
    right: -10%;
    bottom: -40%;
    background: radial-gradient(circle at 50% 0%, rgba(255, 107, 53, 0.16) 0%, transparent 55%);
}

.footer-section__text {
    font-size: 20px;
    max-width: 800px;
    margin: 0 auto 40px;
    line-height: 1.8;
    position: relative;
    z-index: 1;
}

.footer-section__text strong {
    color: var(--dark);
    font-weight: 700;
}

.footer-section__social {
    margin-top: 32px;
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.footer-section__social a {
    display: inline-flex;
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: rgba(15, 23, 42, 0.04);
    transition: all 0.3s ease;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.footer-section__social a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.footer-section__social a[aria-label="Telegram"]::before {
    background: linear-gradient(135deg, #0088cc 0%, #229ED9 100%);
}

.footer-section__social a[aria-label="YouTube"]::before {
    background: linear-gradient(135deg, #FF0000 0%, #CC0000 100%);
}

.footer-section__social a[aria-label="Instagram"]::before {
    background: linear-gradient(135deg, #E4405F 0%, #C13584 50%, #833AB4 100%);
}

.footer-section__social a:hover {
    transform: translateY(-3px) scale(1.06);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.18);
}

.footer-section__social a:hover::before {
    opacity: 1;
}

.footer-section__social svg {
    width: 24px;
    height: 24px;
    fill: var(--dark);
    transition: fill 0.3s ease, transform 0.3s ease;
    position: relative;
    z-index: 1;
}

.footer-section__social a:hover svg {
    fill: var(--white);
    transform: scale(1.05);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn 0.8s ease-out;
}

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

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

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

@media (max-width: 768px) {
    .hero {
        background-attachment: scroll;
    }

    .hero__profile {
        flex-direction: row;
        align-items: center;
        text-align: left;
        padding: 12px 18px;
    }

    .hero__profile-text {
        text-align: left;
    }

    .hero__avatar-wrapper {
        width: 82px;
        height: 82px;
    }

    .hero__social {
        margin-top: 32px;
        gap: 16px;
    }

    .hero__social a {
        width: 48px;
        height: 48px;
    }

    .hero__social svg {
        width: 24px;
        height: 24px;
    }

    .section {
        padding: 60px 0;
    }

    .splide__slide img {
        height: 400px;
    }

    .slider-tabs {
        gap: 12px;
    }

    .slider-tab {
        padding: 12px 24px;
        font-size: 16px;
    }

    .cards {
        grid-template-columns: 1fr;
        gap: 24px;
    }

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

    .problem-card {
        padding: 24px;
    }

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

    .question-item {
        padding: 24px;
    }

    .nav__logo {
        font-size: 24px;
    }
}

/* Scroll animations */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}