* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    min-height: 100%;
}

body.about-page {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #0f172a;
    background: #0f172a url('logo.png') center top / contain no-repeat fixed;
    overflow-x: hidden;
}

body.about-page::before {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.76);
    pointer-events: none;
}

.page-shell {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
}

.hero-card {
    width: min(100%, 1120px);
    background: rgba(255, 255, 255, 0.96);
    border-radius: 30px;
    box-shadow: 0 28px 80px rgba(15, 23, 42, 0.2);
    padding: 40px 40px 34px;
    backdrop-filter: blur(16px);
}

.hero-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 28px;
}

.hero-badge {
    align-self: center;
    background: rgba(26, 42, 58, 0.08);
    color: #1f2937;
    border-radius: 999px;
    padding: 10px 18px;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    border: 1px solid rgba(26, 42, 58, 0.12);
}

.eyebrow {
    margin: 0 0 10px;
    color: #334155;
    font-size: 0.85rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    font-weight: 700;
}

.hero-header h1 {
    margin: 0;
    font-size: clamp(2rem, 3vw, 3.4rem);
    line-height: 1.05;
    color: #0f172a;
}

.btn-pro {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 180px;
    padding: 16px 34px;
    background: rgba(26, 42, 58, 0.88);
    color: #ffffff;
    text-decoration: none;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow: 0 18px 42px rgba(15, 23, 42, 0.22);
    font-weight: 700;
    transition: transform 220ms ease, background-color 220ms ease, box-shadow 220ms ease;
    position: relative;
    overflow: hidden;
}

.btn-pro::before {
    content: '';
    position: absolute;
    left: 16px;
    top: 50%;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.12);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
    pointer-events: none;
}

.btn-pro span {
    position: relative;
    z-index: 1;
}

.btn-pro:hover,
.btn-pro:focus-visible {
    transform: translateY(-2px) scale(1.01);
    background: rgba(26, 42, 58, 1);
    box-shadow: 0 24px 54px rgba(15, 23, 42, 0.3);
}

.hero-body {
    display: grid;
    grid-template-columns: 1.5fr 0.9fr;
    gap: 28px;
    align-items: start;
}

.hero-copy {
    color: #334155;
    line-height: 1.88;
    font-size: 1rem;
}

.hero-copy .lead-copy {
    margin: 0 0 24px;
    font-size: 1.08rem;
    font-weight: 600;
    color: #0f172a;
}

.hero-panel {
    background: #f8fafc;
    border-radius: 22px;
    padding: 28px;
    border: 1px solid rgba(15, 23, 42, 0.08);
}

.hero-panel h2 {
    margin: 0 0 18px;
    font-size: 1.25rem;
    color: #0f172a;
}

.hero-panel ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.hero-panel li {
    margin-bottom: 14px;
    font-size: 0.98rem;
    color: #334155;
    padding-left: 22px;
    position: relative;
}

.hero-panel li::before {
    content: '•';
    position: absolute;
    left: 0;
    top: 0;
    color: #1a2a3a;
    font-weight: 700;
}

.hero-footer {
    margin-top: 34px;
}

.secondary-link {
    color: #1a2a3a;
    text-decoration: none;
    font-weight: 700;
}

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

.announcement-teaser {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 999;
    display: inline-flex;
    align-items: center;
    gap: 14px;
    max-width: 320px;
    padding: 18px 22px;
    background: rgba(26, 42, 58, 0.92);
    color: #ffffff;
    text-decoration: none;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 20px 48px rgba(15, 23, 42, 0.3);
    backdrop-filter: blur(12px);
    animation: announcement-pulse 2.8s infinite ease-in-out;
    transition: transform 200ms ease, box-shadow 200ms ease, background-color 200ms ease;
}

.announcement-teaser:hover,
.announcement-teaser:focus-visible {
    transform: translateY(-2px);
    background: rgba(26, 42, 58, 0.98);
    box-shadow: 0 24px 58px rgba(15, 23, 42, 0.35);
}

.announcement-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.12);
    font-size: 1.35rem;
}

.announcement-copy {
    display: flex;
    flex-direction: column;
    font-size: 0.95rem;
    line-height: 1.3;
}

.announcement-copy strong {
    font-size: 1rem;
    font-weight: 800;
}

@keyframes announcement-pulse {
    0%, 100% {
        box-shadow: 0 18px 42px rgba(250, 204, 21, 0.16), 0 0 0 0 rgba(250, 204, 21, 0);
    }
    50% {
        box-shadow: 0 24px 58px rgba(250, 204, 21, 0.28), 0 0 0 10px rgba(250, 204, 21, 0.08);
    }
}

@media (max-width: 720px) {
    .announcement-teaser {
        right: 14px;
        bottom: 14px;
        max-width: 280px;
        padding: 16px 20px;
    }

    .announcement-copy {
        font-size: 0.9rem;
    }
}

@media (max-width: 860px) {
    .hero-body {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 620px) {
    .page-shell {
        padding: 24px 16px;
    }

    .hero-card {
        padding: 28px 22px 24px;
    }

    .hero-header {
        flex-direction: column;
        align-items: stretch;
    }

    .btn-pro {
        width: 100%;
    }
}