:root {
    --color-primary: #007aff;
    --color-primary-dark: #0056b3;
    --color-dark: #1d1d1f;
    --color-light: #ffffff;
    --color-gray-bg: #f5f5f7;
    --color-gray-text: #6e6e73;
    --color-border: #d2d2d7;
    --color-success: #34c759;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    
    --color-primary-light: #e6f0ff;
    --color-secondary: #00c7ff;
    --color-tertiary: #5ac8fa;
    --color-text: #2c3e50;
    --color-text-light: #7f8c8d;
    --color-background: #fdfdfd;
    --color-light-gray: #ecf0f1;
    --color-error: #dc3545;
    --border-radius: 8px;
    --shadow-light: 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 10px 30px rgba(0, 0, 0, 0.08);
}

body { visibility: visible; }

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: var(--font-main);
    background-color: var(--color-background);
    color: var(--color-text);
    -webkit-font-smoothing: antialiased;
    line-height: 1.6;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: -50px;
    left: -50px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle at 10% 20%, var(--color-primary-light) 0%, var(--color-secondary) 100%);
    border-radius: 60% 40% 70% 30% / 30% 60% 40% 70%;
    opacity: 0.3;
    z-index: -1;
    animation: blob1 15s infinite alternate ease-in-out;
}

body::after {
    content: '';
    position: fixed;
    bottom: -80px;
    right: -80px;
    width: 250px;
    height: 250px;
    background: radial-gradient(circle at 90% 80%, var(--color-tertiary) 0%, var(--color-primary-light) 100%);
    border-radius: 30% 70% 40% 60% / 70% 30% 60% 40%;
    opacity: 0.25;
    z-index: -1;
    animation: blob2 20s infinite alternate-reverse ease-in-out;
}

@keyframes blob1 {
    0% { transform: scale(1) translate(0, 0); }
    50% { transform: scale(1.05) translate(10px, 10px) rotate(5deg); }
    100% { transform: scale(1) translate(0, 0); }
}

@keyframes blob2 {
    0% { transform: scale(1) translate(0, 0); }
    50% { transform: scale(1.1) translate(-15px, -15px) rotate(-8deg); }
    100% { transform: scale(1) translate(0, 0); }
}

.container { max-width: 1100px; width: 90%; margin: 0 auto; }
.button {
    display: inline-block;
    font-size: 1rem;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-align: center;
}
.button--primary { background-color: var(--color-primary); color: var(--color-light); }
.button--primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.2);
}
.button--secondary {
    background-color: var(--color-gray-bg);
    color: var(--color-primary);
    border: 1px solid var(--color-border);
}
.button--secondary:hover { background-color: var(--color-light); border-color: var(--color-primary); }
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    padding: 16px 0;
    z-index: 100;
    transition: var(--transition-smooth);
}
.main-header.scrolled { border-bottom-color: var(--color-border); box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05); }
.main-header .container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.5rem; font-weight: 800; color: var(--color-primary); }
.header-nav { display: flex; align-items: center; gap: 16px; }
.nav-link { display: none; font-weight: 500; color: var(--color-text-light); text-decoration: none; transition: var(--transition-smooth); }
.nav-link:hover { color: var(--color-primary); }
.hero { padding: 140px 0 60px 0; background-color: transparent; }
.hero__content { text-align: center; }
.hero__badge {
    display: inline-block;
    padding: 6px 12px;
    background-color: var(--color-primary-light);
    color: var(--color-primary-dark);
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: 20px;
    margin-bottom: 24px;
}
.hero__title { font-size: 2.8rem; font-weight: 800; line-height: 1.2; margin-bottom: 16px; letter-spacing: -1px; }
.hero__subtitle { font-size: 1.1rem; color: var(--color-text-light); max-width: 600px; margin: 0 auto 32px auto; }
.hero__cta { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.hero__cta-note { font-size: 0.9rem; color: var(--color-text-light); }
.hero__visual { margin-top: 40px; display: flex; justify-content: center; }
.device-mockup { width: 100%; max-width: 800px; }
.device-mockup img { width: 100%; height: auto; border-radius: 12px;  }
.features-scroller { padding: 60px 0; background-color: var(--color-light-gray); }
.section-title { font-size: 2.2rem; font-weight: 700; line-height: 1.2; text-align: center; margin-bottom: 40px; letter-spacing: -0.5px; }
.section-subtitle-center { font-size: 1.1rem; color: var(--color-text-light); max-width: 600px; margin: -30px auto 40px auto; text-align: center; }
.scroller-container { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; padding: 0 5% 24px 5%; margin: 0 -5%; }
.scroller { display: flex; gap: 20px; width: max-content; padding-right: 5%; scroll-snap-type: x mandatory; }
.feature-card {
    flex: 0 0 80%;
    max-width: 300px;
    padding: 24px;
    background-color: var(--color-light);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    scroll-snap-align: start;
    transition: var(--transition-smooth);
    opacity: 0;
    transform: translateY(20px);
}
.feature-card.is-visible { opacity: 1; transform: translateY(0); }
.card__icon { font-size: 1.8rem; color: var(--color-primary); margin-bottom: 16px; }
.card__title { font-size: 1.2rem; font-weight: 600; margin-bottom: 8px; }
.card__text { font-size: 0.95rem; color: var(--color-text-light); }
.offer { padding: 60px 0; background-color: var(--color-background); }
.offer__container { display: flex; flex-direction: column; align-items: center; gap: 32px; }
.offer__visual { width: 100px; opacity: 0; transform: scale(0.8); }
.offer__visual.is-visible { animation: popIn 0.5s ease-out forwards; }
.value-prop-visual { flex: 0 0 100px; display: flex; align-items: center; justify-content: center; opacity: 0; transform: scale(0.8); }
.value-prop-visual.is-visible { animation: popIn 0.5s ease-out forwards; }
.value-prop-visual i { font-size: 5rem; color: var(--color-primary); }
.offer__content { text-align: center; opacity: 0; transform: translateY(20px); }
.offer__content.is-visible { opacity: 1; transform: translateY(0); transition-delay: 0.2s; }
.offer__list { list-style: none; margin-top: 32px; text-align: left; display: flex; flex-direction: column; gap: 20px; }
.offer__list li { display: flex; align-items: flex-start; gap: 16px; }
.offer__list .fa-check { color: var(--color-success); font-size: 1.2rem; margin-top: 4px; }
.offer__list strong { font-weight: 600; }
.offer__list p { color: var(--color-text-light); font-size: 0.95rem; }
.register { padding: 60px 0; background-color: var(--color-light-gray); }
.register-box {
    background-color: var(--color-light);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    max-width: 500px;
    margin: 0 auto;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-medium);
    opacity: 0;
    transform: translateY(20px);
}
.register-box.is-visible { opacity: 1; transform: translateY(0); }
.register-box__title { font-size: 2rem; font-weight: 700; line-height: 1.2; margin-bottom: 16px; }
.register-box__subtitle { color: var(--color-text-light); margin-bottom: 32px; }
.register-form { display: flex; flex-direction: column; gap: 16px; text-align: left; }
.form-group { display: flex; flex-direction: column; }
.form-group label { font-size: 0.9rem; font-weight: 500; margin-bottom: 6px; }
.form-group input {
    font-family: var(--font-main);
    font-size: 1rem;
    padding: 12px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: var(--transition-smooth);
}
.form-group input:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.2); }
.register-form .button { margin-top: 16px; width: 100%; }
.register-box__note { font-size: 0.8rem; color: var(--color-text-light); margin-top: 16px; }
.main-footer { padding: 40px 0; background-color: var(--color-dark); color: var(--color-text-light); }
.footer-content { display: flex; flex-direction: column; align-items: center; gap: 16px; margin-bottom: 24px; }
.footer-logo { font-size: 1.2rem; font-weight: 700; color: var(--color-light); }
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--color-text-light); text-decoration: none; font-size: 0.9rem; }
.footer-links a:hover { color: var(--color-light); }
.footer-copyright { text-align: center; font-size: 0.8rem; }
@keyframes popIn { 0% { opacity: 0; transform: scale(0.8); } 100% { opacity: 1; transform: scale(1); } }
.register-success { display: none; text-align: center; padding: 24px 0; }
.register-success__icon { font-size: 3.5rem; color: var(--color-success); margin-bottom: 20px; opacity: 0; transform: scale(0.8); animation: popInSuccess 0.5s 0.2s ease-out forwards; }
.register-success__title { font-size: 1.8rem; font-weight: 700; margin-bottom: 12px; opacity: 0; animation: fadeInMessage 0.5s 0.4s ease-out forwards; }
.register-success__message { font-size: 1rem; color: var(--color-text-light); line-height: 1.6; opacity: 0; animation: fadeInMessage 0.5s 0.6s ease-out forwards; }
.register-box.form-submitted .register-box__title, .register-box.form-submitted .register-box__subtitle, .register-box.form-submitted .register-form, .register-box.form-submitted .register-box__note { display: none; }
.register-box.form-submitted .register-success { display: block; }
@keyframes popInSuccess { from { opacity: 0; transform: scale(0.8); } to { opacity: 1; transform: scale(1); } }
@keyframes fadeInMessage { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.value-prop-section { background-color: var(--color-light-gray); }
.comparison-section { padding: 60px 0; background-color: var(--color-background); }
.comparison-table { width: 100%; overflow-x: auto; margin-top: 40px; border: 1px solid var(--color-border); border-radius: 12px; box-shadow: var(--shadow-medium); }
.comparison-table table { width: 100%; min-width: 600px; border-collapse: collapse; }
.comparison-table th, .comparison-table td { padding: 16px; text-align: left; border-bottom: 1px solid var(--color-border); }
.comparison-table th { background-color: var(--color-light-gray); font-weight: 600; }
.comparison-table td:nth-child(2) { text-align: center; }
.comparison-table td:nth-child(3) { text-align: center; background-color: var(--color-primary-light); }
.comparison-table tbody tr:last-child td { border-bottom: none; }
.cost-high { color: var(--color-text-light); }
.cost-zero { color: var(--color-primary); font-weight: 700; }
.comparison-table .fa-check { font-size: 1.2rem; color: var(--color-success); }
.comparison-table .fa-times { font-size: 1.2rem; color: #d1d1d6; }

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-modern {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -60%);
    background-color: var(--color-light);
    border-radius: 16px;
    box-shadow: var(--shadow-medium);
    z-index: 1001;
    width: 90%;
    max-width: 400px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
}

.modal-overlay.is-visible,
.modal-modern.is-visible {
    opacity: 1;
    visibility: visible;
}

.modal-modern.is-visible {
    transform: translate(-50%, -50%);
}

.modal-modern__content {
    padding: 24px;
    text-align: center;
}

.modal-modern__header {
    margin-bottom: 16px;
}

.modal-modern__icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.modal-modern__icon.error {
    color: var(--color-error);
}

.modal-modern__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

.modal-modern__body {
    font-size: 1rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: 24px;
}

.modal-modern__footer .button {
    width: 100%;
}

.logo {
    line-height: 1;
}
.logo a {
    display: block;
    line-height: 1;
}
.logo img {
    max-height: 40px;
    width: auto;
    display: block;
    transition: var(--transition-smooth);
}

.footer-logo {
    max-width: 140px;
}
.footer-logo img {
    width: 100%;
    height: auto;
    display: block;
    filter: brightness(0) invert(1);
}

.feature-card:hover .card__icon {
    transform: scale(1.1) rotate(-5deg);
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-medium);
}
.nav-link {
    position: relative;
    padding: 4px 0;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s cubic-bezier(0.19, 1, 0.22, 1);
}
.nav-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}
.offer__list li {
    transition: transform 0.3s ease;
}
.offer__list li:hover {
    transform: translateX(5px);
}

@media (min-width: 768px) {
    .nav-link { display: block; }
    .hero { padding: 180px 0 100px 0; }
    .hero__content { text-align: left; }
    .hero__title { font-size: 4.5rem; }
    .hero__subtitle { font-size: 1.25rem; margin: 0 0 32px 0; }
    .hero__cta { flex-direction: row; gap: 20px; }
    .hero .container { display: flex; align-items: center; gap: 40px; }
    .hero__content { flex: 1; }
    .hero__visual { flex: 1; margin-top: 0; }
    .section-title { font-size: 2.8rem; }
    .scroller-container { overflow-x: visible; padding: 0; margin: 0; }
    .scroller { flex-wrap: wrap; justify-content: center; width: 100%; padding-right: 0; }
    .feature-card { flex-basis: 300px; flex-grow: 1; }
    .offer__container { flex-direction: row; text-align: left; gap: 60px; }
    .offer__visual { flex: 0 0 150px; }
    .offer__content { flex: 1; text-align: left; }
    .offer__list { max-width: 600px; }
    .value-prop-visual { flex: 0 0 150px; }
    .value-prop-visual i { font-size: 8rem; }
    .value-prop-section .offer__container { flex-direction: row-reverse; }
    .comparison-table table { min-width: auto; }
    .comparison-table th, .comparison-table td { padding: 20px 24px; }
    .register-box { padding: 48px; }
    .footer-content { flex-direction: row; justify-content: space-between; }
    
    body::before {
        width: 350px;
        height: 350px;
        top: -100px;
        left: -100px;
    }
    body::after {
        width: 400px;
        height: 400px;
        bottom: -120px;
        right: -120px;
    }
}