/* ── Reset & base ─────────────────────────────────────────── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
                 'Ubuntu', 'Cantarell', sans-serif;
    background-color: #ffffff;
    color: #1a1a1a;
    line-height: 1.6;
}

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

/* ── Layout helpers ──────────────────────────────────────── */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ── Nav ─────────────────────────────────────────────────── */
.site-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid #e8e8e8;
}

.site-nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 15px;
    color: #1a1a1a;
}

.nav-logo {
    width: 28px;
    height: 28px;
    object-fit: contain;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
    list-style: none;
}

.nav-links a {
    font-size: 14px;
    color: #555;
    transition: color 0.15s;
}

.nav-links a:hover {
    color: #1a1a1a;
}

.nav-links .btn-nav {
    padding: 7px 16px;
    background: #1a1a1a;
    color: #ffffff;
    border-radius: 7px;
    font-size: 13px;
    font-weight: 600;
    transition: background 0.15s, transform 0.1s;
}

.nav-links .btn-nav:hover {
    background: #333;
    transform: translateY(-1px);
}

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
    padding: 80px 0 72px;
    text-align: center;
    background: linear-gradient(160deg, #fafafa 0%, #f0f4ff 100%);
    border-bottom: 1px solid #e8e8e8;
}

.hero-logo {
    width: 88px;
    height: 88px;
    object-fit: contain;
    margin-bottom: 24px;
    filter: drop-shadow(0 4px 16px rgba(0,0,0,0.12));
}

.hero-title {
    font-size: 38px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: #111;
    margin-bottom: 14px;
}

.hero-tagline {
    font-size: 17px;
    color: #555;
    max-width: 520px;
    margin: 0 auto 32px;
    line-height: 1.65;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 22px;
    background: #1a1a1a;
    color: #ffffff;
    border-radius: 9px;
    font-size: 14px;
    font-weight: 600;
    transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.btn-primary:hover {
    background: #333;
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(0,0,0,0.18);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 22px;
    background: #ffffff;
    color: #1a1a1a;
    border: 1px solid #d8d8d8;
    border-radius: 9px;
    font-size: 14px;
    font-weight: 600;
    transition: background 0.15s, border-color 0.15s, transform 0.1s;
}

.btn-secondary:hover {
    background: #f5f5f5;
    border-color: #bbb;
    transform: translateY(-2px);
}

.btn-icon {
    width: 18px;
    height: 18px;
    fill: currentColor;
    flex-shrink: 0;
}

/* ── Section shared ──────────────────────────────────────── */
.section {
    padding: 72px 0;
}

.section-label {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #888;
    margin-bottom: 10px;
}

.section-title {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -0.3px;
    margin-bottom: 14px;
    color: #111;
}

.section-desc {
    font-size: 15px;
    color: #555;
    max-width: 560px;
    line-height: 1.7;
    margin-bottom: 40px;
}

/* ── Features ────────────────────────────────────────────── */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.feature-card {
    background: #fafafa;
    border: 1px solid #ebebeb;
    border-radius: 12px;
    padding: 24px 22px;
    transition: box-shadow 0.15s, transform 0.15s;
}

.feature-card:hover {
    box-shadow: 0 4px 18px rgba(0,0,0,0.07);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 26px;
    margin-bottom: 12px;
}

.feature-title {
    font-size: 14px;
    font-weight: 700;
    color: #111;
    margin-bottom: 6px;
}

.feature-desc {
    font-size: 13px;
    color: #666;
    line-height: 1.6;
}

/* ── Install ─────────────────────────────────────────────── */
.install-section {
    background: #f8f9fc;
    border-top: 1px solid #e8e8e8;
    border-bottom: 1px solid #e8e8e8;
}

.install-steps {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 560px;
}

.install-step {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.step-number {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #1a1a1a;
    color: #ffffff;
    font-size: 13px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-text {
    padding-top: 5px;
    font-size: 14px;
    color: #333;
    line-height: 1.6;
}

.step-text code {
    font-family: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;
    background: #e8eaed;
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 12.5px;
}

.install-note {
    margin-top: 28px;
    font-size: 13px;
    color: #888;
    background: #ffffff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 14px 16px;
    max-width: 560px;
}

/* ── Footer ──────────────────────────────────────────────── */
.site-footer {
    padding: 40px 0;
    border-top: 1px solid #e8e8e8;
    background: #fafafa;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
    color: #333;
}

.footer-logo {
    width: 22px;
    height: 22px;
    object-fit: contain;
}

.footer-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-links a {
    font-size: 13px;
    color: #777;
    transition: color 0.15s;
}

.footer-links a:hover {
    color: #1a1a1a;
}

.footer-copy {
    width: 100%;
    font-size: 12px;
    color: #aaa;
    margin-top: 8px;
}

/* ── Privacy Policy page ─────────────────────────────────── */
.policy-page {
    max-width: 700px;
    margin: 0 auto;
    padding: 56px 24px 96px;
}

.policy-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 2px solid #e0e0e0;
}

.policy-logo {
    width: 44px;
    height: 44px;
    object-fit: contain;
    flex-shrink: 0;
}

.policy-title {
    font-size: 20px;
    font-weight: 700;
    color: #1a1a1a;
}

.policy-subtitle {
    font-size: 13px;
    color: #888;
    margin-top: 2px;
}

.policy-effective {
    font-size: 13px;
    color: #999;
    margin-bottom: 36px;
}

.policy-section {
    margin-bottom: 36px;
}

.policy-section-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: #888;
    margin-bottom: 12px;
}

.faq-item {
    margin-bottom: 28px;
    padding-bottom: 28px;
    border-bottom: 1px solid #eee;
}

.faq-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.faq-question {
    font-size: 15px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.policy-body {
    font-size: 14px;
    color: #333;
    line-height: 1.75;
    margin-bottom: 12px;
}

.policy-list {
    font-size: 14px;
    color: #333;
    line-height: 1.75;
    padding-left: 24px;
    margin-bottom: 12px;
}

.policy-link {
    color: #1a73e8;
}

.policy-link:hover {
    text-decoration: underline;
}

.policy-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: #555;
    margin-bottom: 32px;
    transition: color 0.15s;
}

.policy-back:hover {
    color: #1a1a1a;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 600px) {
    .hero-title {
        font-size: 28px;
    }

    .hero {
        padding: 56px 0 52px;
    }

    .section-title {
        font-size: 22px;
    }

    .nav-links {
        gap: 14px;
    }

    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}