:root {
    --primary-color: #14213d;
    --primary-dark: #0d1528;
    --accent-color: #fca311;
    --accent-hover: #e8920a;
    --text-color: #22223b;
    --text-light: #667085;
    --bg-color: #f6f7fb;
    --white: #ffffff;
    --border-color: #e5e7eb;
    --shadow-sm: 0 2px 8px rgba(20, 33, 61, 0.06);
    --shadow-md: 0 8px 24px rgba(20, 33, 61, 0.08);
    --shadow-lg: 0 20px 40px rgba(20, 33, 61, 0.12);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ====== HERO SECTION ====== */
.hero-section {
    position: relative;
    min-height: 560px;
    display: flex;
    align-items: center;
    overflow: hidden;
    color: var(--white);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(20, 33, 61, 0.92) 0%, rgba(20, 33, 61, 0.65) 50%, rgba(20, 33, 61, 0.4) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(252, 163, 17, 0.15);
    border: 1px solid rgba(252, 163, 17, 0.35);
    color: var(--accent-color);
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: 0.3px;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.4rem);
    line-height: 1.1;
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.hero-title span {
    color: var(--accent-color);
}

.hero-desc {
    font-size: 1.1rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.88);
    margin-bottom: 36px;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--accent-color);
    color: var(--primary-dark);
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.25s ease;
    box-shadow: 0 8px 20px rgba(252, 163, 17, 0.3);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(252, 163, 17, 0.4);
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: transparent;
    color: var(--white);
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    border: 1.5px solid rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all 0.25s ease;
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

/* ====== HEADER ====== */
.site-header {
    background-color: rgba(255, 255, 255, 0.96);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.hero-section + .site-header {
    position: sticky;
    top: 0;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 24px;
}

.branding h1 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin: 0;
    font-weight: 800;
    letter-spacing: -0.3px;
}

.subtitle {
    font-size: 0.85rem;
    color: var(--text-light);
    margin: 2px 0 0 0;
    font-weight: 500;
}

/* BURGER MENU */
.burger-menu {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
    padding: 6px;
    border-radius: 6px;
    transition: background 0.2s;
}

.burger-menu:hover {
    background: var(--bg-color);
}

.burger-menu span {
    display: block;
    width: 26px;
    height: 2.5px;
    background-color: var(--primary-color);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.burger-menu.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.burger-menu.active span:nth-child(2) {
    opacity: 0;
}

.burger-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 8px;
    margin: 0;
    padding: 0;
}

.main-nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.2s;
    padding: 8px 14px;
    border-radius: 8px;
    display: inline-block;
}

.main-nav a:hover {
    color: var(--primary-color);
    background: var(--bg-color);
}

/* ====== SECTIONS ====== */
section {
    padding: 5rem 0;
}

section:nth-child(even) {
    background-color: var(--bg-color);
}

.section-head {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-eyebrow {
    display: inline-block;
    color: var(--accent-color);
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    text-align: center;
    font-size: clamp(1.6rem, 3vw, 2.3rem);
    font-weight: 800;
    letter-spacing: -0.3px;
    line-height: 1.2;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 0;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
    font-size: 1.05rem;
    line-height: 1.7;
}

/* ====== INTRO SECTION ====== */
.intro-section {
    padding-top: 6rem;
}

.intro-content {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.intro-text {
    flex: 1;
}

.intro-text h2 {
    text-align: left;
    margin-bottom: 1.25rem;
}

.intro-text p {
    color: var(--text-light);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.intro-image {
    flex: 1;
    text-align: center;
}

.intro-image img {
    max-width: 100%;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    transition: transform 0.4s ease;
}

.intro-image img:hover {
    transform: scale(1.02);
}

/* ====== CARDS GRID ====== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--white);
    padding: 2rem 1.75rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--accent-color) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.35s ease;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

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

.card .icon {
    width: 72px;
    height: 72px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 1.25rem;
    background: linear-gradient(135deg, rgba(20, 33, 61, 0.08) 0%, rgba(252, 163, 17, 0.12) 100%);
    border-radius: 20px;
}

.card h3 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1.15rem;
    font-weight: 700;
}

.card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ====== USAGE GRID ====== */
.usage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.usage-item {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.usage-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.usage-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.usage-item:hover img {
    transform: scale(1.05);
}

.usage-image-wrap {
    overflow: hidden;
    display: block;
}

.usage-item h3, .usage-item p {
    padding: 0 1.75rem;
}

.usage-item h3 {
    margin-top: 1.5rem;
    color: var(--primary-color);
    font-size: 1.2rem;
    font-weight: 700;
}

.usage-item p {
    margin: 0.5rem 0 1.75rem 0;
    color: var(--text-light);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* ====== ADVANTAGES ====== */
.advantages-list {
    max-width: 860px;
    margin: 0 auto;
    list-style: none;
    padding: 0;
}

.advantages-list li {
    background: var(--white);
    padding: 1.25rem 1.5rem 1.25rem 4rem;
    margin-bottom: 1rem;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    border-left: 5px solid var(--accent-color);
    position: relative;
    font-weight: 500;
    color: var(--text-color);
    font-size: 1rem;
    line-height: 1.6;
    transition: all 0.25s ease;
}

.advantages-list li::before {
    content: "✓";
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--white);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.85rem;
}

.advantages-list li:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

/* ====== CONTACT INFO ====== */
section.contact-info {
    background: var(--primary-color) !important;
    color: var(--white);
}

.contact-info .container {
    max-width: 720px;
    text-align: center;
}

.contact-info h2 {
    color: var(--white);
    margin-bottom: 2rem;
}

.contact-info p {
    margin-bottom: 1rem;
    font-size: 1.05rem;
    color: #ffffff;
    font-weight: 500;
}

.contact-info a {
    color: var(--accent-color);
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s;
}

.contact-info a:hover {
    color: var(--white);
    text-decoration: underline;
}

/* ====== DISCLAIMER ====== */
.disclaimer-section {
    background: var(--bg-color);
    padding: 2.5rem 0 !important;
}

.disclaimer-section p {
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
    max-width: 720px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ====== FORM ====== */
.contact-form {
    max-width: 640px;
    margin: 0 auto;
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.95rem 1rem;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-color);
    transition: all 0.2s ease;
    background: #fafbff;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(20, 33, 61, 0.08);
}

.submit-btn {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e3260 100%);
    color: var(--white);
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    width: 100%;
    font-size: 1rem;
    font-weight: 700;
    transition: all 0.3s ease;
    letter-spacing: 0.2px;
    box-shadow: 0 10px 24px rgba(20, 33, 61, 0.25);
}

.submit-btn:hover {
    background: linear-gradient(135deg, #0f1a31 0%, var(--primary-color) 100%);
    transform: translateY(-2px);
    box-shadow: 0 14px 32px rgba(20, 33, 61, 0.32);
}

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

/* ====== FOOTER ====== */
.site-footer {
    background-color: var(--primary-dark);
    color: var(--white);
    padding: 2.5rem 0;
    margin-top: 0;
    text-align: center;
}

.site-footer p {
    color: #ffffff;
    font-size: 0.95rem;
    font-weight: 500;
}

.footer-nav {
    margin-top: 1rem;
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.footer-nav a {
    color: #d1d5db;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
    font-weight: 500;
}

.footer-nav a:hover {
    color: var(--accent-color);
}

/* ====== MEDIA QUERIES ====== */
@media (min-width: 769px) {
    .main-nav {
        display: block !important;
    }
    .burger-menu {
        display: none !important;
    }
}

@media (max-width: 768px) {
    section {
        padding: 3.5rem 0;
    }

    .hero-section {
        min-height: 480px;
    }

    .header-container {
        flex-wrap: wrap;
        gap: 12px;
    }

    .header-container .branding {
        flex: 1;
    }

    .burger-menu {
        display: flex;
    }

    .main-nav {
        display: none;
        width: 100%;
        margin-top: 0.5rem;
        border-top: 1px solid var(--border-color);
        padding-top: 1rem;
    }

    .main-nav.active {
        display: block;
        animation: slideDown 0.3s ease-out;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0.25rem;
        align-items: stretch;
    }

    .main-nav a {
        display: block;
        padding: 12px 14px;
    }

    .intro-content {
        flex-direction: column;
        gap: 2rem;
    }

    .intro-text h2 {
        text-align: center;
    }

    .intro-text p {
        text-align: center;
    }

    .contact-form {
        padding: 1.75rem 1.25rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn-primary,
    .hero-actions .btn-ghost {
        width: 100%;
    }
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}