:root {
    --bg: #07111f;
    --bg-soft: #0c1a2d;
    --surface: rgba(13, 26, 46, 0.82);
    --surface-strong: #10203a;
    --surface-light: #f7f9fc;
    --text: #ecf3ff;
    --text-soft: #b3c2da;
    --ink: #122033;
    --ink-soft: #607086;
    --line: rgba(255, 255, 255, 0.12);
    --line-strong: rgba(12, 28, 51, 0.12);
    --primary: #47b8ff;
    --primary-strong: #1f90dc;
    --accent: #7ef2cf;
    --shadow: 0 22px 60px rgba(3, 10, 20, 0.32);
    --radius-xl: 28px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --radius-sm: 12px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background:
        radial-gradient(circle at top right, rgba(71, 184, 255, 0.18), transparent 28%),
        radial-gradient(circle at left center, rgba(126, 242, 207, 0.10), transparent 22%),
        linear-gradient(180deg, #08111f 0%, #0b1627 36%, #eef3f9 36%, #eef3f9 100%);
    color: var(--ink);
    min-height: 100vh;
}

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

.container {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}

.topbar {
    padding: 22px 0;
}

.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--text);
}

.brand-mark {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(71, 184, 255, 0.92), rgba(126, 242, 207, 0.96));
    color: #072033;
    display: grid;
    place-items: center;
    font-size: 24px;
    box-shadow: 0 12px 30px rgba(9, 21, 40, 0.28);
}

.brand-copy small,
.topbar-note {
    color: var(--text-soft);
}

.brand-copy strong {
    display: block;
    font-size: 1.05rem;
    font-weight: 700;
}

.topbar-note {
    font-size: 0.95rem;
}

.hero {
    padding: 10px 0 40px;
}

.hero-card {
    position: relative;
    overflow: hidden;
    padding: 46px;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(12, 27, 48, 0.95), rgba(14, 33, 58, 0.82));
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    color: var(--text);
}

.hero-card::before,
.hero-card::after {
    content: '';
    position: absolute;
    border-radius: 999px;
    filter: blur(6px);
    pointer-events: none;
}

.hero-card::before {
    width: 280px;
    height: 280px;
    right: -80px;
    top: -90px;
    background: rgba(71, 184, 255, 0.16);
}

.hero-card::after {
    width: 240px;
    height: 240px;
    left: -90px;
    bottom: -120px;
    background: rgba(126, 242, 207, 0.12);
}

.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.8fr);
    gap: 26px;
    align-items: center;
}

.hero-copy h1 {
    margin: 0 0 16px;
    font-size: clamp(2rem, 4vw, 3.35rem);
    line-height: 1.08;
}

.hero-copy p {
    margin: 0;
    max-width: 760px;
    color: var(--text-soft);
    font-size: 1.02rem;
    line-height: 1.75;
}

.badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text);
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.92rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 28px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 46px;
    padding: 0 18px;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 700;
    transition: transform 0.22s ease, box-shadow 0.22s ease, background-color 0.22s ease, color 0.22s ease;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #78d7ff);
    color: #072033;
    box-shadow: 0 14px 26px rgba(71, 184, 255, 0.24);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-side {
    display: grid;
    gap: 16px;
}

.metric-card,
.feature-card,
.security-card,
.promo-card {
    background: var(--surface-light);
    border-radius: var(--radius-lg);
    border: 1px solid var(--line-strong);
    box-shadow: 0 16px 38px rgba(10, 22, 37, 0.08);
}

.metric-card {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text);
    border: 1px solid rgba(255, 255, 255, 0.12);
    padding: 22px;
}

.metric-card strong {
    display: block;
    font-size: 2.1rem;
    margin-bottom: 6px;
}

.metric-card span {
    display: block;
    color: var(--text-soft);
}

.section {
    padding: 22px 0 42px;
}

.section-header {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 20px;
}

.section-header h2 {
    margin: 0;
    font-size: clamp(1.5rem, 2vw, 2rem);
    color: #0e1d31;
}

.section-header p {
    margin: 8px 0 0;
    color: var(--ink-soft);
    max-width: 720px;
    line-height: 1.7;
}

.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 18px;
}

.tool-card {
    display: flex;
    flex-direction: column;
    gap: 18px;
    padding: 24px;
    border-radius: var(--radius-lg);
    background: #ffffff;
    text-decoration: none;
    color: inherit;
    border: 1px solid var(--line-strong);
    box-shadow: 0 18px 44px rgba(8, 18, 34, 0.08);
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 24px 54px rgba(8, 18, 34, 0.12);
    border-color: rgba(71, 184, 255, 0.38);
}

.tool-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
}

.tool-icon {
    width: 58px;
    height: 58px;
    border-radius: 18px;
    display: grid;
    place-items: center;
    font-size: 1.75rem;
    color: #0d2038;
    background: linear-gradient(135deg, rgba(71, 184, 255, 0.18), rgba(126, 242, 207, 0.28));
}

.tool-mode {
    padding: 8px 12px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    background: #edf5ff;
    color: #1563a5;
}

.tool-mode.is-server {
    background: #fff4e8;
    color: #b66a00;
}

.tool-card h3 {
    margin: 0;
    font-size: 1.08rem;
    color: #12213a;
}

.tool-card p {
    margin: 0;
    color: var(--ink-soft);
    line-height: 1.7;
}

.tool-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-top: auto;
    color: #0e5d9d;
    font-weight: 700;
}

.tool-meta {
    font-size: 0.85rem;
    color: #71829a;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 18px;
}

.feature-card,
.security-card {
    padding: 24px;
}

.feature-card h3,
.security-card h3,
.promo-card h2 {
    margin: 0 0 14px;
    font-size: 1.18rem;
    color: #0f1f35;
}

.feature-list,
.security-list {
    display: grid;
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.feature-list li,
.security-list li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    color: #506178;
    line-height: 1.7;
}

.list-icon {
    width: 28px;
    height: 28px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    background: rgba(71, 184, 255, 0.14);
    color: #135f9d;
    flex: 0 0 auto;
    font-size: 0.95rem;
}

.promo-wrap {
    padding-bottom: 48px;
}

.promo-card {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(220px, 0.7fr);
    gap: 24px;
    align-items: center;
    padding: 28px;
    background: linear-gradient(135deg, #ffffff, #f5fbff);
}

.promo-card p {
    margin: 0;
    color: #586981;
    line-height: 1.75;
}

.promo-actions {
    display: flex;
    justify-content: end;
}

.footer {
    padding: 18px 0 42px;
    color: #6f8097;
    font-size: 0.94rem;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding-top: 18px;
    border-top: 1px solid rgba(10, 24, 43, 0.08);
}

.footer-note {
    color: #8a98ad;
}

.skip-link {
    position: absolute;
    left: 16px;
    top: -56px;
    background: #ffffff;
    color: #0b1b2e;
    padding: 10px 14px;
    border-radius: 12px;
    z-index: 999;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 16px;
}

@media (max-width: 980px) {
    .hero-card {
        padding: 32px;
    }

    .hero-grid,
    .promo-card {
        grid-template-columns: 1fr;
    }

    .promo-actions {
        justify-content: start;
    }

    .section-header,
    .footer-inner,
    .topbar-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 720px) {
    .container {
        width: min(100% - 22px, 1180px);
    }

    .hero {
        padding-top: 0;
    }

    .hero-card {
        padding: 24px;
        border-radius: 24px;
    }

    .tool-card,
    .feature-card,
    .security-card,
    .promo-card {
        padding: 20px;
    }

    .badge,
    .tool-mode {
        font-size: 0.8rem;
    }

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

    .btn {
        width: 100%;
    }
}