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

:root {
    --ink: #0a1f33;
    --ink-soft: #2a3f55;
    --body: #475569;
    --muted: #7f8da0;
    --line: #e1e7ef;
    --panel: #f6f8fb;
    --panel-2: #edf2f7;
    --accent: #007a86;
    --accent-dark: #005e68;
    --navy: #061a2c;
    --white: #ffffff;
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    background: var(--white);
    color: var(--body);
    font-family: Inter, "Noto Sans Devanagari", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.58;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

a:hover {
    color: var(--accent-dark);
}

.container {
    width: min(1120px, calc(100% - 2rem));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: saturate(160%) blur(8px);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.2rem;
    padding: 0.9rem 0;
}

.brand {
    color: var(--ink);
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: 0;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.45rem;
    list-style: none;
}

.nav-links a {
    color: var(--ink-soft);
    font-size: 0.94rem;
    font-weight: 700;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 0.2rem;
}

.lang-link {
    min-width: 2.1rem;
    padding: 0.34rem 0.48rem;
    border-radius: 6px;
    color: var(--muted);
    font-size: 0.76rem;
    font-weight: 800;
    text-align: center;
}

.lang-link.active {
    background: var(--panel-2);
    color: var(--ink);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0.62rem 1rem;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--white);
    color: var(--ink);
    font-size: 0.92rem;
    font-weight: 800;
    text-align: center;
    white-space: nowrap;
}

.btn:hover {
    border-color: var(--accent);
    color: var(--accent-dark);
}

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

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

.hero {
    padding: 5rem 0 4rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.72fr);
    gap: 3rem;
    align-items: center;
}

.kicker {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    margin-bottom: 1.1rem;
    padding: 0.28rem 0.68rem;
    border-radius: 999px;
    background: var(--panel-2);
    color: var(--accent-dark);
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

h1 {
    max-width: 760px;
    margin-bottom: 1.25rem;
    color: var(--ink);
    font-size: 3.15rem;
    font-weight: 800;
    letter-spacing: 0;
    line-height: 1.08;
    overflow-wrap: anywhere;
}

h1 em {
    color: var(--accent);
    font-style: normal;
}

.lead {
    max-width: 720px;
    margin-bottom: 1.6rem;
    color: var(--ink-soft);
    font-size: 1.08rem;
    overflow-wrap: anywhere;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
}

.signal-panel {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: linear-gradient(180deg, var(--panel) 0%, var(--white) 100%);
    overflow: hidden;
    box-shadow: 0 16px 40px rgba(10, 31, 51, 0.08);
}

.signal-head {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1.1rem;
    border-bottom: 1px solid var(--line);
}

.signal-head img {
    width: 58px;
    height: 58px;
    border-radius: 8px;
    box-shadow: 0 8px 22px rgba(10, 31, 51, 0.13);
}

.signal-head h2 {
    color: var(--ink);
    font-size: 1.12rem;
    line-height: 1.2;
}

.signal-head p {
    color: var(--muted);
    font-size: 0.9rem;
}

.score-list {
    display: grid;
    gap: 0.75rem;
    padding: 1.1rem;
}

.score-row {
    display: grid;
    grid-template-columns: minmax(120px, 1fr) minmax(140px, 1.2fr);
    gap: 1rem;
    align-items: center;
}

.score-row span {
    color: var(--ink-soft);
    font-size: 0.9rem;
    font-weight: 700;
}

.bar {
    height: 10px;
    border-radius: 999px;
    background: var(--panel-2);
    overflow: hidden;
}

.bar i {
    display: block;
    width: var(--score);
    height: 100%;
    border-radius: inherit;
    background: var(--accent);
}

.stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    padding: 3rem 0 0;
}

.stat {
    border-top: 2px solid var(--line);
    padding-top: 1rem;
}

.stat strong {
    display: block;
    margin-bottom: 0.25rem;
    color: var(--ink);
    font-size: 1.55rem;
    line-height: 1.1;
}

.stat span {
    color: var(--body);
    font-size: 0.93rem;
}

.section {
    padding: 4rem 0;
    border-top: 1px solid var(--line);
}

.section.soft {
    background: var(--panel);
}

.section-title {
    max-width: 760px;
    margin-bottom: 2rem;
}

.section-title h2 {
    margin-bottom: 0.8rem;
    color: var(--ink);
    font-size: 2rem;
    line-height: 1.15;
    letter-spacing: 0;
}

.section-title p {
    color: var(--ink-soft);
    font-size: 1.02rem;
}

.product-grid,
.layer-grid,
.audience-grid {
    display: grid;
    gap: 1rem;
}

.product-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.layer-grid,
.audience-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
    min-width: 0;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--white);
    padding: 1.15rem;
}

.card img {
    width: 56px;
    height: 56px;
    margin-bottom: 1rem;
    border-radius: 8px;
    box-shadow: 0 8px 22px rgba(10, 31, 51, 0.12);
}

.card h3 {
    margin-bottom: 0.45rem;
    color: var(--ink);
    font-size: 1.2rem;
    line-height: 1.18;
    overflow-wrap: anywhere;
}

.card p {
    color: var(--body);
    font-size: 0.96rem;
    overflow-wrap: anywhere;
}

.card .meta {
    display: block;
    margin-top: 0.9rem;
    color: var(--accent-dark);
    font-size: 0.88rem;
    font-weight: 800;
}

.video-wrap {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.72fr);
    gap: 1.6rem;
    align-items: center;
}

.video-frame {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #000;
    overflow: hidden;
}

.video-frame video {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000;
}

.check-list {
    display: grid;
    gap: 0.7rem;
    list-style: none;
}

.check-list li {
    padding-left: 1.55rem;
    color: var(--ink-soft);
    position: relative;
}

.check-list li::before {
    content: "";
    position: absolute;
    top: 0.55rem;
    left: 0;
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: var(--accent);
}

.site-footer {
    background: var(--navy);
    color: rgba(255, 255, 255, 0.7);
    padding: 1.5rem 0;
    font-size: 0.88rem;
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 1rem;
}

.site-footer a {
    color: rgba(255, 255, 255, 0.88);
}

@media (max-width: 920px) {
    .nav {
        align-items: flex-start;
        flex-wrap: wrap;
    }

    .nav-links {
        order: 3;
        width: 100%;
        justify-content: flex-start;
        gap: 1rem;
        overflow-x: auto;
    }

    .hero {
        padding: 3.2rem 0 3rem;
    }

    .hero-grid,
    .video-wrap {
        grid-template-columns: 1fr;
    }

    .stats,
    .product-grid,
    .layer-grid,
    .audience-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 640px) {
    .container {
        width: 100%;
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .nav {
        flex-direction: column;
        align-items: stretch;
    }

    .nav-links {
        order: 3;
    }

    .nav-actions {
        order: 2;
        width: 100%;
        justify-content: flex-start;
    }

    .nav-actions .btn {
        display: none;
    }

    .btn {
        white-space: normal;
    }

    h1 {
        font-size: 1.95rem;
        max-width: 21.5rem;
    }

    .lead {
        max-width: 21.5rem;
    }

    .section-title h2 {
        font-size: 1.65rem;
    }

    .stats,
    .product-grid,
    .layer-grid,
    .audience-grid {
        grid-template-columns: 1fr;
    }

    .score-row {
        grid-template-columns: 1fr;
        gap: 0.35rem;
    }
}