:root {
    --primary: #0B1C2D;
    --accent: #C6A75E;
    --neutral: #FFFFFF;
    --soft: #F6F7F9;
    --text: #1D2A36;
    --muted: #5D6873;
    --border: rgba(198, 167, 94, 0.45);
    --shadow: 0 18px 40px rgba(11, 28, 45, 0.12);
    --radius: 18px;
    --max: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: var(--neutral);
    color: var(--text);
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    width: min(92%, var(--max));
    margin: 0 auto;
}

.section {
    padding: 88px 0;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    color: var(--primary);
    margin-bottom: 14px;
    line-height: 1.15;
}

.section-subtitle {
    max-width: 100%;
    color: var(--muted);
    margin-bottom: 38px;
    font-size: 1.02rem;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--accent);
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-size: 0.8rem;
    background: rgba(198, 167, 94, 0.08);
    margin-bottom: 18px;
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 28px;
}

.btn {
    padding: 14px 22px;
    border-radius: 999px;
    font-weight: 700;
    border: 2px solid transparent;
    transition: 0.25s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary {
    background: var(--accent);
    color: var(--primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(198, 167, 94, 0.28);
}

.btn-outline {
    border-color: var(--accent);
    color: var(--neutral);
    background: transparent;
}

.btn-outline:hover {
    background: rgba(255,255,255,0.08);
    transform: translateY(-2px);
}

header.hero {
    background:
            radial-gradient(circle at top right, rgba(198, 167, 94, 0.18), transparent 26%),
            linear-gradient(135deg, #0B1C2D 0%, #13293F 100%);
    color: var(--neutral);
    padding: 28px 0 110px;
    overflow: hidden;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding-bottom: 38px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.brand-mark {
    width: 50px;
    height: 50px;/*
    border-radius: 50%;
    border: 2px solid var(--accent);
    display: grid;
    place-items: center;
    color: var(--accent);*/
    font-size: 0.95rem;/*
    font-weight: 700;*/
}

.brand-company {
    font-weight: 700;
    color: var(--accent);
}

.nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    color: rgba(255,255,255,0.9);
    font-size: 0.96rem;
}

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

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 34px;
    align-items: center;
}

.hero h1 {
    font-size: clamp(2.4rem, 5vw, 4.2rem);
    line-height: 1.05;
    margin-bottom: 18px;
}

.hero p {
    font-size: 1.08rem;
    color: rgba(255,255,255,0.86);
    max-width: 680px;
}

.hero-card {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(198, 167, 94, 0.45);
    border-radius: 24px;
    padding: 28px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
}

.hero-card h3 {
    color: var(--accent);
    margin-bottom: 12px;
    font-size: 1.2rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    margin-top: 22px;
}

.stat {
    border: 1px solid rgba(198, 167, 94, 0.28);
    border-radius: 16px;
    padding: 16px;
    background: rgba(255,255,255,0.04);
}

.stat strong {
    display: block;
    color: var(--accent);
    font-size: 1.2rem;
    margin-bottom: 4px;
}

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

.card {
    background: var(--neutral);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    transition: 0.25s ease;
    height: 100%;
}

.card:hover {
    transform: translateY(-6px);
}

.card h3, .card h4 {
    color: var(--primary);
    margin-bottom: 12px;
    line-height: 1.25;
}

.card p, .card li {
    color: var(--muted);
    font-size: 0.97rem;
}

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

.step-number {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--primary);
    color: var(--accent);
    font-weight: 700;
    margin-bottom: 16px;
    border: 2px solid var(--accent);
}

.keyword-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.keyword-card {
    background: linear-gradient(180deg, #ffffff 0%, #fbfaf6 100%);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    min-height: 180px;
}

.keyword-card span {
    display: inline-block;
    color: var(--accent);
    font-weight: 700;
    margin-bottom: 10px;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.faq-list {
    display: grid;
    gap: 16px;
}

details {
    background: var(--neutral);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 18px 20px;
    box-shadow: 0 10px 24px rgba(11, 28, 45, 0.05);
}

summary {
    cursor: pointer;
    list-style: none;
    font-weight: 700;
    color: var(--primary);
    position: relative;
    padding-right: 28px;
}

summary::-webkit-details-marker {
    display: none;
}

summary::after {
    content: '+';
    position: absolute;
    right: 0;
    top: 0;
    color: var(--accent);
    font-size: 1.2rem;
}

details[open] summary::after {
    content: '–';
}

details p {
    margin-top: 12px;
    color: var(--muted);
}

.pros-cons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.list-box {
    border-radius: 22px;
    padding: 28px;
    box-shadow: var(--shadow);
}

.list-box h3 {
    margin-bottom: 18px;
    font-size: 1.4rem;
}

.list-box ul {
    display: grid;
    gap: 12px;
    padding-left: 18px;
}

.list-box li {
    color: var(--muted);
}

.pros {
    background: #f7faf8;
    border: 1px solid rgba(11, 28, 45, 0.12);
}

.pros h3 {
    color: var(--primary);
}

.cons {
    background: #fffaf3;
    border: 1px solid rgba(198, 167, 94, 0.35);
}

.cons h3 {
    color: var(--accent);
}

.section-form {
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:30px;
}

.form-data {
    background:#fff;
    padding:28px;
    border-radius:18px;
    box-shadow: var(--shadow);
    border:1px solid var(--border);
    display:grid; gap:16px;
}

.form-orientation {
    display:flex;
    flex-direction:column;
    gap:20px;
    justify-content:center;
}

footer {
    background: var(--primary);
    color: var(--neutral);
    padding: 70px 0 28px;
    margin-top: 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1.1fr;
    gap: 28px;
    margin-bottom: 34px;
}

.footer-column h4 {
    color: var(--accent);
    margin-bottom: 16px;
    font-size: 1.05rem;
}

.footer-column ul {
    list-style: none;
    display: grid;
    gap: 10px;
    color: rgba(255,255,255,0.86);
}

.footer-column p, .footer-column a {
    color: rgba(255,255,255,0.86);
}

.footer-note {
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.12);
    color: rgba(255,255,255,0.72);
    font-size: 0.92rem;
}

@media (max-width: 1080px) {
    .grid-cards,
    .process-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .hero-grid,
    .footer-grid,
    .pros-cons {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .nav {
        flex-direction: column;
        align-items: flex-start;
    }

    .nav-links {
        gap: 12px;
    }

    .grid-cards,
    .process-grid,
    .keyword-grid,
    .hero-stats {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 68px 0;
    }

    .hero {
        padding-bottom: 80px;
    }

    .section-form {
        grid-template-columns:1fr;
    }
}