:root {
    --bg: #08111b;
    --bg-soft: #0d1825;
    --panel: rgba(16, 25, 38, 0.84);
    --panel-strong: rgba(19, 30, 46, 0.96);
    --line: rgba(113, 160, 219, 0.18);
    --text: #f5f8ff;
    --muted: #95a6c7;
    --accent: #4fc7ff;
    --accent-strong: #1ea9f2;
    --accent-glow: rgba(79, 199, 255, 0.28);
    --success: #3ddc97;
    --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Manrope", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(43, 116, 255, 0.16), transparent 24%),
        radial-gradient(circle at 82% 18%, rgba(79, 199, 255, 0.14), transparent 22%),
        linear-gradient(180deg, #07101a 0%, #0a1420 45%, #08111b 100%);
    min-height: 100vh;
}

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

.site-shell {
    width: min(1220px, calc(100% - 32px));
    margin: 0 auto;
    padding: 20px 0 40px;
}

.topbar {
    position: sticky;
    top: 12px;
    z-index: 40;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 24px;
    padding: 16px 18px;
    background: rgba(7, 14, 22, 0.78);
    border: 1px solid var(--line);
    border-radius: 22px;
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow);
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--accent) 0%, #86d8ff 100%);
    color: #04131d;
    font-family: "Space Grotesk", sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.12), 0 16px 40px rgba(33, 164, 255, 0.24);
}

.brand-copy {
    display: flex;
    flex-direction: column;
}

.brand-copy strong {
    font-family: "Space Grotesk", sans-serif;
    font-size: 1.15rem;
}

.brand-copy small {
    color: var(--muted);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 18px;
}

.site-nav a {
    color: var(--muted);
    transition: color 180ms ease, transform 180ms ease;
}

.site-nav a:hover {
    color: var(--text);
    transform: translateY(-1px);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    border: 0;
    background: transparent;
    padding: 0;
    cursor: pointer;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text);
}

.hero,
.section,
.footer {
    border: 1px solid var(--line);
    background: var(--panel);
    border-radius: 30px;
    box-shadow: var(--shadow);
}

.hero {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 28px;
    padding: 34px;
}

.hero h1,
.section h2,
.download-panel h2 {
    margin: 0;
    font-family: "Space Grotesk", sans-serif;
    line-height: 1.03;
    letter-spacing: -0.04em;
}

.hero h1 {
    font-size: clamp(2.8rem, 5vw, 5.2rem);
    max-width: 10.5ch;
}

.eyebrow {
    margin: 0 0 12px;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.78rem;
    color: var(--accent);
}

.lead {
    max-width: 58ch;
    color: var(--muted);
    font-size: 1.05rem;
    line-height: 1.75;
    margin: 20px 0 0;
}

.hero-actions,
.download-actions,
.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.hero-actions {
    margin-top: 28px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 180px;
    padding: 14px 18px;
    border-radius: 16px;
    font-weight: 700;
    transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background 180ms ease;
}

.button:hover {
    transform: translateY(-2px);
}

.button.primary {
    background: linear-gradient(135deg, var(--accent-strong), var(--accent));
    color: #03121c;
    box-shadow: 0 14px 36px var(--accent-glow);
}

.button.ghost {
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: var(--text);
    background: rgba(255, 255, 255, 0.02);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-top: 28px;
}

.hero-stats article,
.feature-card,
.tool-card,
.info-card,
.faq-list article {
    border: 1px solid var(--line);
    border-radius: 22px;
    background: var(--panel-strong);
}

.hero-stats article {
    padding: 18px;
}

.hero-stats strong {
    display: block;
    font-size: 1.35rem;
}

.hero-stats span {
    color: var(--muted);
}

.hero-visual {
    display: flex;
    align-items: stretch;
}

.window-card {
    width: 100%;
    border-radius: 28px;
    padding: 18px;
    border: 1px solid rgba(112, 154, 212, 0.22);
    background: linear-gradient(180deg, rgba(11, 17, 27, 0.95), rgba(9, 15, 24, 0.88));
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 28px 60px rgba(0, 0, 0, 0.34);
}

.window-bar {
    display: flex;
    gap: 8px;
    margin-bottom: 18px;
}

.window-bar span {
    width: 11px;
    height: 11px;
    border-radius: 50%;
}

.window-bar span:nth-child(1) { background: #ff5f57; }
.window-bar span:nth-child(2) { background: #ffbd2e; }
.window-bar span:nth-child(3) { background: #28c840; }

.window-grid {
    display: grid;
    grid-template-columns: 130px 1fr;
    gap: 16px;
}

.mini-sidebar,
.mini-banner,
.mini-cards article,
.mini-footer div {
    border: 1px solid var(--line);
}

.mini-sidebar {
    border-radius: 22px;
    padding: 18px 14px;
    background: #0d1724;
}

.mini-logo {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    font-family: "Space Grotesk", sans-serif;
    background: linear-gradient(135deg, var(--accent), #b0ebff);
    color: #08111b;
    font-weight: 700;
    margin-bottom: 18px;
}

.mini-nav {
    display: grid;
    gap: 12px;
}

.mini-nav span {
    color: var(--muted);
    font-size: 0.92rem;
}

.mini-nav .active {
    color: var(--text);
}

.mini-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mini-banner {
    border-radius: 22px;
    padding: 18px;
    background: linear-gradient(180deg, rgba(13, 22, 34, 0.94), rgba(13, 23, 36, 0.76));
}

.mini-banner p,
.mini-cards small {
    margin: 0;
    color: var(--muted);
}

.mini-banner strong {
    display: block;
    margin-top: 8px;
    font-size: 1.35rem;
}

.mini-cards {
    display: grid;
    gap: 12px;
}

.mini-cards article {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 12px;
    align-items: center;
    padding: 14px;
    border-radius: 20px;
    background: #101b29;
}

.mini-cards .icon {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: rgba(79, 199, 255, 0.14);
    color: var(--accent);
    font-weight: 700;
}

.mini-cards strong,
.tool-card h3,
.feature-card h3,
.info-card h3,
.faq-list h3 {
    margin: 0 0 8px;
    font-family: "Space Grotesk", sans-serif;
}

.mini-footer {
    display: flex;
    gap: 10px;
    margin-top: auto;
}

.mini-footer div {
    flex: 1;
    height: 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
}

.mini-footer .active {
    background: linear-gradient(90deg, var(--accent-strong), var(--accent));
}

.section {
    margin-top: 28px;
    padding: 30px;
}

.section-alt {
    background: rgba(13, 22, 34, 0.92);
}

.section-heading {
    max-width: 720px;
}

.section-heading h2,
.download-panel h2 {
    font-size: clamp(2rem, 3vw, 3.2rem);
}

.feature-grid,
.tool-grid,
.instruction-grid,
.faq-list {
    display: grid;
    gap: 18px;
    margin-top: 24px;
}

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

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

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

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

.feature-card,
.tool-card,
.info-card,
.faq-list article {
    padding: 22px;
}

.feature-card p,
.tool-card p,
.info-card p,
.faq-list p {
    margin: 0;
    color: var(--muted);
    line-height: 1.7;
}

.tool-icon {
    width: 52px;
    height: 52px;
    display: grid;
    place-items: center;
    border-radius: 16px;
    margin-bottom: 14px;
    color: var(--accent);
    background: rgba(79, 199, 255, 0.12);
    border: 1px solid rgba(79, 199, 255, 0.2);
    font-family: "Space Grotesk", sans-serif;
    font-weight: 700;
}

.download-panel {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    padding: 28px;
    border-radius: 28px;
    background: linear-gradient(135deg, rgba(21, 33, 49, 0.94), rgba(8, 17, 27, 0.96));
    border: 1px solid rgba(79, 199, 255, 0.18);
}

.footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-top: 28px;
    padding: 22px 28px;
}

.footer p {
    margin: 6px 0 0;
    color: var(--muted);
}

@media (max-width: 1024px) {
    .hero,
    .feature-grid,
    .tool-grid,
    .instruction-grid,
    .faq-list,
    .download-panel,
    .footer {
        grid-template-columns: 1fr;
        flex-direction: column;
        align-items: flex-start;
    }

    .hero {
        padding: 24px;
    }

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

    .mini-sidebar {
        display: none;
    }
}

@media (max-width: 760px) {
    .site-shell {
        width: min(100% - 20px, 100%);
        padding-top: 12px;
    }

    .topbar {
        flex-wrap: wrap;
    }

    .menu-toggle {
        display: flex;
    }

    .site-nav {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding-top: 10px;
    }

    .site-nav.open {
        display: flex;
    }

    .hero-stats,
    .feature-grid,
    .tool-grid,
    .instruction-grid,
    .faq-list {
        grid-template-columns: 1fr;
    }

    .button {
        width: 100%;
    }

    .section,
    .hero,
    .footer {
        border-radius: 24px;
    }
}