:root {
    --primary: #1565c0;
    --primary-strong: #0d47a1;
    --primary-soft: #e8f1fc;
    --hero-from: #0d47a1;
    --hero-to: #1e88e5;
    --bg: #ffffff;
    --bg-tinted: #f3f7fc;
    --surface: #ffffff;
    --text: #1d2939;
    --text-muted: #5a6778;
    --border: #e1e7ef;
    --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 8px 24px rgba(16, 24, 40, .06);
    --shadow-hover: 0 2px 4px rgba(16, 24, 40, .06), 0 16px 40px rgba(16, 24, 40, .12);
    --radius: 16px;
    --ok: #2e9d57;
    --warn: #e5a50a;
    --bad: #d93f3f;
    --font: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, Cantarell, "Noto Sans", "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root {
        --primary: #64a8f5;
        --primary-strong: #8cc0fa;
        --primary-soft: #1b2b40;
        --hero-from: #0a2f63;
        --hero-to: #1558a8;
        --bg: #111820;
        --bg-tinted: #16202b;
        --surface: #1b2531;
        --text: #e6ebf1;
        --text-muted: #a3afbd;
        --border: #2a3645;
        --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
        --shadow-hover: 0 2px 4px rgba(0, 0, 0, .35), 0 16px 40px rgba(0, 0, 0, .4);
    }
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { transition: none !important; }
}

body {
    margin: 0;
    font-family: var(--font);
    font-size: 17px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); font-weight: 750; }
h3 { font-size: 1.12rem; font-weight: 650; }
p { margin: 0 0 1em; }
a { color: var(--primary); }

.sprite { display: none; }
.icon {
    width: 1.25em; height: 1.25em; flex: none;
    fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
}

.visually-hidden {
    position: absolute !important; width: 1px; height: 1px; overflow: hidden;
    clip: rect(0 0 0 0); white-space: nowrap;
}
.skip-link {
    position: absolute; left: 16px; top: -60px; z-index: 100;
    background: var(--primary); color: #fff; padding: 8px 16px; border-radius: 8px;
}
.skip-link:focus { top: 12px; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 600px) { .container { padding: 0 16px; } }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; gap: .55em;
    padding: .8em 1.4em; border-radius: 999px; border: 2px solid transparent;
    font-weight: 650; font-size: 1rem; text-decoration: none; line-height: 1.2;
    transition: transform .15s ease, box-shadow .15s ease, background-color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:focus-visible, a:focus-visible, select:focus-visible { outline: 3px solid #ffbf47; outline-offset: 2px; }
.btn-small { padding: .55em 1.1em; font-size: .92rem; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-strong); }
@media (prefers-color-scheme: dark) { .btn-primary { color: #0b1a2c; } }
.btn-light { background: #fff; color: #0d47a1; box-shadow: 0 6px 20px rgba(0, 0, 0, .15); }
.btn-outline-light { border-color: rgba(255, 255, 255, .7); color: #fff; }
.btn-outline-light:hover { background: rgba(255, 255, 255, .12); }

/* Header */
.site-header {
    position: sticky; top: 0; z-index: 50;
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; gap: 24px; height: 68px; }
.brand {
    display: inline-flex; align-items: center; gap: 10px;
    font-weight: 800; font-size: 1.2rem; color: var(--text); text-decoration: none;
}
.main-nav { display: flex; gap: 4px; margin-left: 16px; }
.main-nav a {
    color: var(--text); text-decoration: none; font-weight: 550; font-size: .96rem;
    padding: 8px 12px; border-radius: 8px;
}
.main-nav a:hover { background: var(--primary-soft); color: var(--primary); }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: 12px; }

.lang-switch {
    display: inline-flex; align-items: center; gap: 6px; color: var(--text-muted);
    border: 1px solid var(--border); border-radius: 999px; padding: 4px 6px 4px 10px;
}
.lang-switch select {
    border: 0; background: transparent; color: var(--text); font: inherit; font-size: .92rem;
    padding: 2px 4px; cursor: pointer;
}
.lang-switch select option { color: #1d2939; background: #fff; }

@media (max-width: 900px) {
    .main-nav { display: none; }
}
@media (max-width: 480px) {
    .header-actions .btn { display: none; }
}

/* Hero */
.hero {
    color: #fff;
    background:
        radial-gradient(1000px 500px at 85% -10%, rgba(255, 255, 255, .18), transparent 60%),
        linear-gradient(135deg, var(--hero-from), var(--hero-to));
    padding: 88px 0 104px;
    overflow: hidden;
}
.hero-inner { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.hero .lead { font-size: 1.2rem; color: rgba(255, 255, 255, .9); max-width: 36em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.eyebrow {
    display: inline-block; font-size: .82rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
    padding: 4px 12px; border-radius: 999px; background: rgba(255, 255, 255, .16); margin-bottom: 20px;
}
.eyebrow-dark { background: var(--primary-soft); color: var(--primary); }

@media (max-width: 900px) {
    .hero { padding: 56px 0 72px; }
    .hero-inner { grid-template-columns: 1fr; gap: 40px; }
}

/* Hero app mockup */
.mock-window {
    background: #fff; border-radius: 14px; overflow: hidden;
    box-shadow: 0 30px 80px rgba(0, 0, 0, .3);
    transform: perspective(1200px) rotateY(-8deg) rotateX(3deg);
}
@media (max-width: 900px) { .mock-window { transform: none; } }
.mock-bar { display: flex; gap: 6px; padding: 12px 14px; background: #f1f4f8; border-bottom: 1px solid #e4e9f0; }
.mock-bar span { width: 10px; height: 10px; border-radius: 50%; background: #cfd7e2; }
.mock-body { display: grid; grid-template-columns: 34% 1fr; min-height: 300px; }
.mock-nav { background: #f7f9fc; padding: 14px 10px; border-right: 1px solid #e9eef4; }
.mock-nav-item {
    display: flex; align-items: center; gap: 8px; padding: 9px 10px; border-radius: 8px; color: #6b7a8c; margin-bottom: 4px;
}
.mock-nav-item i { display: block; height: 8px; flex: 1; border-radius: 4px; background: #dce3ec; }
.mock-nav-item.active { background: #e3eefb; color: #1565c0; }
.mock-nav-item.active i { background: #9fc3ee; }
.mock-list { padding: 10px 16px; }
.mock-row {
    display: flex; align-items: center; gap: 12px; padding: 13px 4px; border-bottom: 1px solid #eef2f6;
}
.mock-row:last-child { border-bottom: 0; }
.mock-row i { display: block; height: 9px; border-radius: 5px; background: #d5dde8; }
.mock-row i.w1 { width: 52%; } .mock-row i.w2 { width: 38%; } .mock-row i.w3 { width: 61%; }
.mock-row i.w4 { width: 44%; } .mock-row i.w5 { width: 33%; } .mock-row i.w6 { width: 57%; }
.mock-row em { margin-left: auto; color: #9aa8b8; font-style: normal; letter-spacing: .1em; font-size: .8rem; }
.dot { width: 10px; height: 10px; border-radius: 50%; flex: none; }
.dot.ok { background: var(--ok); } .dot.warn { background: var(--warn); } .dot.bad { background: var(--bad); }

/* Sections */
.section { padding: 96px 0; }
.section-tinted { background: var(--bg-tinted); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head p { color: var(--text-muted); font-size: 1.12rem; }
@media (max-width: 600px) { .section { padding: 64px 0; } .section-head { margin-bottom: 40px; } }

.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 960px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid-3 { grid-template-columns: 1fr; gap: 16px; } }

.card, .resource, .link-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.card { padding: 28px; }
.card p, .resource p, .feature-row p { color: var(--text-muted); margin: 0; font-size: .98rem; }
.card-icon {
    display: inline-flex; align-items: center; justify-content: center; flex: none;
    width: 48px; height: 48px; border-radius: 12px; margin-bottom: 18px;
    background: var(--primary-soft); color: var(--primary);
}
.card-icon .icon { width: 24px; height: 24px; }

/* Security split */
.split { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; align-items: center; }
.split > div:first-child p { color: var(--text-muted); font-size: 1.12rem; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 32px; } }
.stack { display: grid; gap: 16px; }
.feature-row {
    display: flex; gap: 18px; align-items: flex-start; padding: 22px 24px;
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
}
.feature-row .card-icon { margin: 0; }
.feature-row h3 { margin-bottom: .3em; }

/* Apps */
.list-title { font-size: 1rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-muted); margin: 40px 0 16px; }
.list-title:first-of-type { margin-top: 0; }
.link-card {
    display: flex; flex-direction: column; gap: 2px; padding: 20px 24px; text-decoration: none; color: var(--text);
    transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.link-card:hover, .resource:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.link-card-title { font-weight: 700; font-size: 1.08rem; }
.link-card-title small { font-weight: 500; color: var(--text-muted); font-size: .85rem; }
.link-card-meta { color: var(--text-muted); font-size: .92rem; }

/* Resources */
.resource {
    display: flex; gap: 18px; align-items: flex-start; padding: 24px; text-decoration: none; color: var(--text);
    transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.resource .card-icon { margin: 0; }
.resource h3 { margin-bottom: .3em; color: var(--text); }

/* CTA band */
.cta-band {
    color: #fff; padding: 72px 0;
    background: linear-gradient(135deg, var(--hero-from), var(--hero-to));
}
.cta-inner { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: center; }
.cta-inner p { color: rgba(255, 255, 255, .9); margin: 0; font-size: 1.08rem; }
.cta-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
@media (max-width: 900px) { .cta-inner { grid-template-columns: 1fr; } }

/* Footer */
.site-footer { background: var(--bg-tinted); border-top: 1px solid var(--border); padding: 56px 0 40px; font-size: .94rem; }
.footer-inner { display: grid; grid-template-columns: 1fr auto; gap: 24px 48px; }
.footer-brand p { color: var(--text-muted); margin: 12px 0 0; max-width: 32em; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: flex-start; }
.footer-links a { color: var(--text); text-decoration: none; font-weight: 550; }
.footer-links a:hover { color: var(--primary); text-decoration: underline; }
.disclaimer, .copyright { grid-column: 1 / -1; color: var(--text-muted); margin: 0; font-size: .86rem; }
.disclaimer { border-top: 1px solid var(--border); padding-top: 24px; }
@media (max-width: 700px) { .footer-inner { grid-template-columns: 1fr; } }