:root {
    --brand: #1f6fe5;
    --brand-strong: #1557c0;
    --brand-500: #2e80f0;
    --brand-tint: #eaf3fe;
    --bg: #ffffff;
    --bg-alt: #f4f8fd;
    --surface: #ffffff;
    --border: #e4e9f1;
    --text: #10151c;
    --muted: #58617180;
    --muted-solid: #586171;
    --header-bg: rgba(255, 255, 255, 0.82);
    --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.04), 0 6px 18px rgba(16, 24, 40, 0.06);
    --shadow-md: 0 10px 30px rgba(16, 24, 40, 0.1);
    --shadow-lg: 0 24px 60px rgba(16, 24, 40, 0.16);
    --radius: 16px;
    --radius-lg: 24px;
    --maxw: 1120px;
    --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial,
        "Noto Sans", sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root {
        --brand: #4f9bff;
        --brand-strong: #2f7de6;
        --brand-500: #5aa2ff;
        --brand-tint: #12233d;
        --bg: #0d1117;
        --bg-alt: #0f1621;
        --surface: #151c26;
        --border: #232c39;
        --text: #e7edf5;
        --muted: #9aa7b680;
        --muted-solid: #9aa7b6;
        --header-bg: rgba(13, 17, 23, 0.82);
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4), 0 6px 18px rgba(0, 0, 0, 0.4);
        --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.5);
        --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.6);
    }
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: var(--font);
    font-size: 17px;
    line-height: 1.65;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

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

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

h1,
h2,
h3 {
    line-height: 1.18;
    letter-spacing: -0.015em;
    margin: 0;
    font-weight: 700;
}

h1 {
    font-size: clamp(2rem, 4.5vw, 3.15rem);
}

h2 {
    font-size: clamp(1.6rem, 3vw, 2.3rem);
}

h3 {
    font-size: 1.12rem;
}

p {
    margin: 0;
}

.container {
    width: 100%;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 22px;
}

.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
    background: var(--brand);
    color: #fff;
    padding: 10px 16px;
    border-radius: 0 0 10px 0;
    z-index: 100;
}

.skip-link:focus {
    left: 0;
}

.eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--brand);
    margin-bottom: 14px;
}

.section-lead {
    color: var(--muted-solid);
    font-size: 1.05rem;
    max-width: 62ch;
    margin-top: 14px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--brand);
    color: #fff;
    font-weight: 600;
    padding: 13px 22px;
    border-radius: 999px;
    transition: background 0.15s ease, transform 0.15s ease;
}

.btn:hover {
    background: var(--brand-strong);
    transform: translateY(-1px);
}

.play-badge {
    display: inline-block;
    border-radius: 8px;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.play-badge:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.play-badge img {
    height: 58px;
    width: auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--header-bg);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 20px;
    height: 64px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.18rem;
    color: var(--text);
    letter-spacing: -0.02em;
}

.brand img {
    border-radius: 9px;
}

.nav {
    display: flex;
    gap: 26px;
    margin-left: auto;
}

.nav a {
    color: var(--muted-solid);
    font-weight: 500;
    font-size: 0.95rem;
}

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

.btn-nav {
    padding: 9px 18px;
    font-size: 0.92rem;
}

.hero {
    padding: clamp(48px, 8vw, 96px) 0 clamp(40px, 6vw, 72px);
    background:
        radial-gradient(1100px 520px at 78% -10%, var(--brand-tint), transparent 70%),
        var(--bg);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: clamp(32px, 6vw, 72px);
    align-items: center;
}

.hero-copy .lead {
    margin-top: 20px;
    font-size: 1.14rem;
    color: var(--muted-solid);
    max-width: 56ch;
}

.cta-row {
    margin-top: 30px;
}

.trust-inline {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 10px 22px;
    padding: 0;
    margin: 26px 0 0;
    color: var(--muted-solid);
    font-size: 0.92rem;
    font-weight: 500;
}

.trust-inline li {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.trust-inline li::before {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--brand);
}

.hero-visual {
    display: flex;
    justify-content: center;
}

.device {
    width: 100%;
    max-width: 340px;
    border-radius: 26px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
}

.trustbar {
    padding: 8px 0 4px;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 18px;
    padding-top: 32px;
    padding-bottom: 32px;
    border-top: 1px solid var(--border);
}

.trust-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.trust-item svg {
    width: 26px;
    height: 26px;
    flex: none;
    fill: none;
    stroke: var(--brand);
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
    margin-top: 2px;
}

.trust-item strong {
    display: block;
    font-size: 0.97rem;
}

.trust-item span {
    color: var(--muted-solid);
    font-size: 0.85rem;
}

.section {
    padding: clamp(56px, 8vw, 104px) 0;
    scroll-margin-top: 80px;
}

.section-alt {
    background: var(--bg-alt);
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(268px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 22px;
    box-shadow: var(--shadow-sm);
    transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--brand);
}

.card .icon {
    width: 30px;
    height: 30px;
    fill: none;
    stroke: var(--brand);
    stroke-width: 1.7;
    stroke-linecap: round;
    stroke-linejoin: round;
    margin-bottom: 16px;
}

.card h3 {
    margin-bottom: 8px;
}

.card p {
    color: var(--muted-solid);
    font-size: 0.95rem;
}

.security-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: clamp(32px, 6vw, 72px);
    align-items: center;
}

.security-copy h2 {
    margin-bottom: 18px;
}

.security-copy > p {
    color: var(--muted-solid);
    max-width: 56ch;
}

.checklist {
    list-style: none;
    padding: 0;
    margin: 26px 0 0;
    display: grid;
    gap: 14px;
}

.checklist li {
    position: relative;
    padding-left: 34px;
    font-weight: 500;
}

.checklist li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 2px;
    width: 22px;
    height: 22px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232e80f0' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E")
        no-repeat center/contain;
}

.note {
    margin-top: 26px;
    padding: 16px 18px;
    border-radius: 12px;
    background: var(--brand-tint);
    border: 1px solid var(--border);
    color: var(--muted-solid);
    font-size: 0.92rem;
    max-width: 58ch;
}

.security-visual {
    display: flex;
    justify-content: center;
}

.video-link {
    position: relative;
    display: block;
    max-width: 720px;
    margin: 40px auto 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.video-link:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.video-link img {
    display: block;
    width: 100%;
    height: auto;
}

.video-play {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 76px;
    height: 76px;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    background: rgba(13, 17, 23, 0.55);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
    transition: background 0.16s ease;
}

.video-play::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-42%, -50%);
    border-style: solid;
    border-width: 15px 0 15px 25px;
    border-color: transparent transparent transparent #ffffff;
}

.video-link:hover .video-play {
    background: rgba(13, 17, 23, 0.72);
}

.shots {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.shot {
    margin: 0;
}

.shot img {
    width: 100%;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.shot img:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.shot figcaption {
    text-align: center;
    margin-top: 12px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--muted-solid);
}

.pro-wrap {
    text-align: center;
}

.pro-wrap .section-lead {
    margin-left: auto;
    margin-right: auto;
}

.cards-pro {
    list-style: none;
    padding: 0;
    text-align: left;
}

.cards-pro > .card {
    list-style: none;
}

.pro-wrap .play-badge {
    margin-top: 40px;
}

.languages .chips {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 0;
    margin: 32px 0 0;
}

.chips li {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text);
    box-shadow: var(--shadow-sm);
}

.faq-wrap {
    max-width: 820px;
}

.faq-wrap h2 {
    margin-bottom: 8px;
}

.faq-wrap details {
    border-bottom: 1px solid var(--border);
}

.faq-wrap summary {
    cursor: pointer;
    list-style: none;
    padding: 20px 0;
    font-weight: 600;
    font-size: 1.03rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.faq-wrap summary::-webkit-details-marker {
    display: none;
}

.faq-wrap summary::after {
    content: "";
    width: 9px;
    height: 9px;
    flex: none;
    border-right: 2px solid var(--brand);
    border-bottom: 2px solid var(--brand);
    transform: rotate(45deg);
    transition: transform 0.2s ease;
    margin-right: 6px;
}

.faq-wrap details[open] summary::after {
    transform: rotate(-135deg);
}

.faq-wrap details p {
    padding: 0 0 22px;
    color: var(--muted-solid);
    max-width: 70ch;
}

.cta-band {
    padding: clamp(56px, 8vw, 96px) 0;
    background: linear-gradient(135deg, #1f6fe5, #1557c0);
    color: #fff;
    text-align: center;
}

.cta-band h2 {
    color: #fff;
}

.cta-band p {
    margin: 14px auto 30px;
    color: rgba(255, 255, 255, 0.88);
    max-width: 52ch;
}

.cta-band .play-badge:hover {
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}

.site-footer {
    border-top: 1px solid var(--border);
    background: var(--bg-alt);
    padding: 48px 0 28px;
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-brand {
    display: grid;
    grid-template-columns: auto auto;
    align-items: center;
    gap: 10px;
    max-width: 340px;
}

.footer-brand img {
    border-radius: 8px;
}

.footer-brand strong {
    font-size: 1.1rem;
}

.footer-brand p {
    grid-column: 1 / -1;
    color: var(--muted-solid);
    font-size: 0.9rem;
    margin-top: 4px;
}

.footer-links {
    display: flex;
    gap: 22px;
    font-weight: 500;
}

.footer-links a {
    color: var(--muted-solid);
}

.footer-links a:hover {
    color: var(--brand);
}

.copyright {
    margin-top: 36px;
    padding-top: 22px;
    border-top: 1px solid var(--border);
    color: var(--muted-solid);
    font-size: 0.86rem;
}

@media (max-width: 900px) {
    .hero-grid,
    .security-grid {
        grid-template-columns: 1fr;
        gap: 44px;
    }

    .hero-visual,
    .security-visual {
        order: -1;
    }

    .hero-visual .device {
        max-width: 300px;
    }

    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 22px;
    }
}

@media (max-width: 640px) {
    body {
        font-size: 16px;
    }

    .nav {
        display: none;
    }

    .header-inner {
        justify-content: space-between;
    }

    .trust-grid {
        grid-template-columns: 1fr;
    }

    .play-badge img {
        height: 52px;
    }

    .footer-inner {
        flex-direction: column;
    }
}

@media (min-width: 640px) {
    .shots {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 960px) {
    .shots {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        transition: none !important;
        animation: none !important;
    }
}