* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #06111f;
    --bg-soft: rgba(8, 20, 38, 0.78);
    --panel-border: rgba(113, 221, 255, 0.22);
    --text: #ecf7ff;
    --muted: #93abc4;
    --accent: #69e6ff;
    --accent-strong: #8b5cf6;
    --shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
}

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

body {
    font-family: Arial, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top, rgba(105, 230, 255, 0.10), transparent 32%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.14), transparent 28%),
        linear-gradient(135deg, #030712 0%, #07111f 45%, #0b1730 100%);
    overflow-x: hidden;
}

#bg {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.page-shell {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 32px;
}

.container {
    width: min(100%, 960px);
    display: flex;
    flex-direction: column;
    gap: 36px;
    text-align: center;
    padding: 48px;
    border: 1px solid var(--panel-border);
    border-radius: 28px;
    background: linear-gradient(180deg, rgba(8, 20, 38, 0.85), rgba(6, 15, 28, 0.72));
    box-shadow: var(--shadow);
    backdrop-filter: blur(14px);
}

.hero {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.eyebrow {
    display: inline-block;
    align-self: center;
    padding: 8px 14px;
    border: 1px solid rgba(105, 230, 255, 0.25);
    border-radius: 999px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: var(--accent);
    background: rgba(105, 230, 255, 0.08);
}

header h1 {
    font-size: clamp(42px, 8vw, 76px);
    line-height: 1;
    letter-spacing: 0.03em;
    text-shadow: 0 0 22px rgba(105, 230, 255, 0.22);
}

header h2 {
    font-size: clamp(20px, 3vw, 28px);
    color: var(--muted);
    font-weight: 400;
}

.description {
    max-width: 720px;
    margin: 0 auto;
    font-size: clamp(18px, 2.5vw, 20px);
    line-height: 1.8;
    color: #dcecff;
}

.description p + p {
    margin-top: 18px;
}

footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    font-size: 15px;
    color: var(--muted);
}

footer a {
    color: var(--accent);
}

.buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.buttons a {
    min-width: 140px;
    padding: 12px 18px;
    border: 1px solid rgba(105, 230, 255, 0.4);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text);
    background: linear-gradient(135deg, rgba(105, 230, 255, 0.14), rgba(139, 92, 246, 0.12));
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.buttons a:hover {
    transform: translateY(-2px);
    border-color: rgba(105, 230, 255, 0.75);
    box-shadow: 0 12px 32px rgba(105, 230, 255, 0.18);
}

/* ── Why sections ─────────────────────────────────────── */
.why-section {
    text-align: left;
}

.section-title {
    font-size: clamp(22px, 3vw, 30px);
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.04em;
    margin-bottom: 10px;
    text-align: center;
    text-shadow: 0 0 18px rgba(105, 230, 255, 0.25);
}

.section-sub {
    text-align: center;
    color: var(--muted);
    font-size: 15px;
    margin-bottom: 24px;
    line-height: 1.6;
}

/* ── Cards grid ───────────────────────────────────────── */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin-top: 24px;
}

.cards-grid--4 {
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.card {
    background: linear-gradient(145deg, rgba(10, 24, 48, 0.88), rgba(6, 15, 30, 0.78));
    border: 1px solid rgba(105, 230, 255, 0.18);
    border-radius: 18px;
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    backdrop-filter: blur(8px);
}

.card:hover {
    transform: translateY(-4px);
    border-color: rgba(105, 230, 255, 0.45);
    box-shadow: 0 16px 40px rgba(105, 230, 255, 0.12);
}

.card--small {
    padding: 22px 18px;
    gap: 10px;
}

.card-icon {
    font-size: 28px;
    line-height: 1;
}

.card h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: 0.02em;
}

.card p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--muted);
}

/* ── CTA banner ───────────────────────────────────────── */
.cta-banner {
    padding: 22px 32px;
    border-radius: 16px;
    text-align: center;
    font-size: clamp(16px, 2.2vw, 20px);
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--text);
    background: linear-gradient(135deg, rgba(105, 230, 255, 0.12), rgba(139, 92, 246, 0.16));
    border: 1px solid rgba(139, 92, 246, 0.35);
    box-shadow: 0 0 32px rgba(139, 92, 246, 0.12);
}

/* ── Floating contact button ──────────────────────────── */
.float-btn {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 100;
    padding: 14px 22px;
    border: 1px solid rgba(105, 230, 255, 0.45);
    border-radius: 50px;
    background: linear-gradient(135deg, rgba(105, 230, 255, 0.18), rgba(139, 92, 246, 0.22));
    color: var(--text);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.04em;
    cursor: pointer;
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(105, 230, 255, 0.15);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.float-btn:hover {
    transform: translateY(-3px);
    border-color: rgba(105, 230, 255, 0.8);
    box-shadow: 0 14px 40px rgba(105, 230, 255, 0.25);
}

/* ── Modal overlay ────────────────────────────────────── */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(3, 7, 18, 0.7);
    backdrop-filter: blur(6px);
    align-items: flex-end;
    justify-content: flex-end;
    padding: 28px;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    position: relative;
    width: min(100%, 420px);
    background: linear-gradient(160deg, rgba(10, 24, 48, 0.97), rgba(6, 15, 30, 0.95));
    border: 1px solid rgba(105, 230, 255, 0.22);
    border-radius: 22px;
    padding: 36px 32px 28px;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.modal h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
}

.modal-sub {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 4px;
}

.modal-close {
    position: absolute;
    top: 14px;
    right: 16px;
    background: none;
    border: none;
    color: var(--muted);
    font-size: 18px;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s;
}

.modal-close:hover {
    color: var(--text);
}

.modal form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.modal label {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: -4px;
}

.modal label span {
    color: var(--accent);
}

.modal input,
.modal textarea {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(105, 230, 255, 0.18);
    border-radius: 10px;
    padding: 10px 14px;
    color: var(--text);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    resize: none;
    transition: border-color 0.2s;
}

.modal input:focus,
.modal textarea:focus {
    border-color: rgba(105, 230, 255, 0.55);
}

.modal input::placeholder,
.modal textarea::placeholder {
    color: rgba(147, 171, 196, 0.5);
}

.modal-submit {
    margin-top: 6px;
    padding: 12px;
    border: 1px solid rgba(105, 230, 255, 0.4);
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(105, 230, 255, 0.16), rgba(139, 92, 246, 0.18));
    color: var(--text);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.modal-submit:hover:not(:disabled) {
    transform: translateY(-2px);
    border-color: rgba(105, 230, 255, 0.7);
    box-shadow: 0 8px 24px rgba(105, 230, 255, 0.15);
}

.modal-submit:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.form-msg {
    font-size: 13px;
    text-align: center;
    min-height: 18px;
}

.form-msg--ok  { color: #69e6ff; }
.form-msg--err { color: #f87171; }

@media (max-width: 480px) {
    .float-btn { bottom: 18px; right: 18px; }
    .modal-overlay { padding: 0; align-items: flex-end; }
    .modal { width: 100%; border-radius: 22px 22px 0 0; }
}
@media (max-width: 768px) {
    .page-shell {
        padding: 20px;
    }

    .container {
        padding: 28px 20px;
        gap: 28px;
    }

    .description {
        font-size: 17px;
        line-height: 1.7;
    }

    .buttons a {
        width: 100%;
    }

    .cards-grid,
    .cards-grid--4 {
        grid-template-columns: 1fr;
    }
}