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

html {
    scroll-behavior: smooth;
}

body {
    font-family:
        Arial,
        Helvetica,
        sans-serif;

    color: #172033;
    background: #ffffff;
    line-height: 1.6;
}

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

.container {
    width: 92%;
    max-width: 1180px;
    margin: auto;
}


/* =========================
   HEADER
========================= */

header {
    height: 76px;
    background: #ffffff;
    border-bottom: 1px solid #e8ebf0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 23px;
    font-weight: 800;
    color: #1769e0;
}

.logo span {
    color: #172033;
}

nav {
    display: flex;
    gap: 25px;
}

nav a {
    font-size: 14px;
    font-weight: 600;
    color: #495267;
}

nav a:hover {
    color: #1769e0;
}


/* =========================
   HERO
========================= */

.hero {
    background:
        radial-gradient(
            circle at top right,
            #dbeafe,
            transparent 35%
        ),
        #f7faff;

    padding: 100px 0;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr .8fr;
    gap: 70px;
    align-items: center;
}

.badge,
.section-label {
    display: inline-block;
    color: #1769e0;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 1.5px;
    margin-bottom: 15px;
}

.hero h1 {
    font-size: 54px;
    line-height: 1.08;
    margin-bottom: 25px;
    letter-spacing: -1.5px;
}

.hero h1 span {
    display: block;
    color: #1769e0;
}

.hero p {
    font-size: 18px;
    color: #657086;
    max-width: 650px;
    margin-bottom: 30px;
}

.buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 13px 22px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 14px;
}

.btn-primary {
    background: #1769e0;
    color: white;
}

.btn-primary:hover {
    background: #0e54b9;
}

.btn-outline {
    border: 1px solid #1769e0;
    color: #1769e0;
    background: white;
}

.btn-outline:hover {
    background: #eef5ff;
}


/* HERO CARD */

.hero-card {
    background: white;
    padding: 35px;
    border-radius: 20px;
    box-shadow: 0 25px 60px rgba(20, 40, 80, .10);
}

.hero-icon {
    width: 60px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 15px;
    background: #eaf2ff;
    font-size: 28px;
    margin-bottom: 20px;
}

.hero-card h2 {
    font-size: 25px;
    margin-bottom: 10px;
}

.hero-card > p {
    color: #69758a;
    margin-bottom: 20px;
}

.hero-item {
    display: flex;
    gap: 15px;
    padding: 15px;
    border-radius: 12px;
    background: #f8fafc;
    margin-top: 10px;
}

.hero-item > span {
    font-size: 25px;
}

.hero-item strong {
    display: block;
}

.hero-item small {
    color: #778195;
}


/* =========================
   SECTIONS
========================= */

section {
    padding: 90px 0;
}

.section-heading {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}

.section-heading h2,
.app-content h2,
.about-box h2 {
    font-size: 38px;
    line-height: 1.2;
    margin-bottom: 15px;
}

.section-heading p,
.about-box p {
    color: #68748a;
}


/* =========================
   CARDS
========================= */

.cards {
    display: grid;
    grid-template-columns:
        repeat(4, 1fr);

    gap: 20px;
}

.card {
    border: 1px solid #e8ecf2;
    border-radius: 15px;
    padding: 28px;
    background: white;
    transition: .25s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow:
        0 15px 40px rgba(30, 60, 100, .08);
}

.card-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 13px;
    background: #edf5ff;
    font-size: 24px;
    margin-bottom: 20px;
}

.card h3 {
    font-size: 19px;
    margin-bottom: 10px;
}

.card p {
    color: #68748a;
    font-size: 14px;
}


/* =========================
   DARK PAYMENT SECTION
========================= */

.dark-section {
    background: #101827;
    color: white;
}

.two-column {
    display: grid;
    grid-template-columns:
        1fr 1fr;

    gap: 70px;
    align-items: center;
}

.section-label.light {
    color: #77aefc;
}

.dark-section h2 {
    font-size: 40px;
    line-height: 1.2;
    margin-bottom: 20px;
}

.dark-section p {
    color: #b8c2d2;
    margin-bottom: 20px;
}

.check-list {
    list-style: none;
}

.check-list li {
    margin: 12px 0;
    color: #e5eaf2;
}

.check-list li::before {
    content: "✓";
    color: #67a8ff;
    font-weight: bold;
    margin-right: 10px;
}

.payment-box {
    background: white;
    color: #172033;
    border-radius: 20px;
    padding: 40px;
}

.payment-logo {
    width: 55px;
    height: 55px;
    border-radius: 12px;
    background: #1769e0;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 30px;
    font-weight: 800;
    margin-bottom: 20px;
}

.payment-box h3 {
    font-size: 25px;
    margin-bottom: 12px;
}

.payment-box p {
    color: #667085;
}

.payment-box .small-text {
    font-size: 13px;
}


/* =========================
   APP SECTION
========================= */

.app-section {
    background: #f8fafc;
}

.app-grid {
    align-items: center;
}

.phone {
    width: 270px;
    height: 520px;
    margin: auto;
    padding: 10px;
    border-radius: 38px;
    background: #111827;
    box-shadow:
        0 25px 60px rgba(0,0,0,.18);
}

.phone-top {
    height: 18px;
    width: 80px;
    background: #111827;
    border-radius: 0 0 12px 12px;
    margin: auto;
}

.phone-screen {
    height: calc(100% - 18px);
    border-radius: 29px;
    background:
        linear-gradient(
            180deg,
            #1769e0,
            #eaf2ff
        );
    padding: 25px 15px;
}

.app-header {
    color: white;
    text-align: center;
    font-size: 17px;
    margin-bottom: 35px;
}

.newspaper-card {
    display: flex;
    gap: 12px;
    align-items: center;
    background: white;
    padding: 16px;
    border-radius: 12px;
    margin-bottom: 12px;
}

.newspaper-card span {
    font-size: 25px;
}

.newspaper-card strong {
    display: block;
}

.newspaper-card small {
    color: #788396;
}

.app-content p {
    color: #69758a;
    margin-bottom: 25px;
}

.features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.features div {
    background: white;
    padding: 13px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
}


/* =========================
   ABOUT
========================= */

.about-preview {
    background: white;
    text-align: center;
}

.about-box {
    max-width: 800px;
}

.about-box p {
    margin-bottom: 25px;
}


/* =========================
   CONTACT
========================= */

.contact-section {
    background: #1769e0;
    color: white;
}

.contact-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.contact-box h2 {
    font-size: 38px;
    margin-bottom: 10px;
}

.contact-box p {
    color: #dbeafe;
    max-width: 650px;
}

.btn-white {
    background: white;
    color: #1769e0;
    white-space: nowrap;
}


/* =========================
   FOOTER
========================= */

footer {
    background: #0b1220;
    color: #9aa6b8;
    padding: 55px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns:
        2fr 1fr 1fr 1.5fr;

    gap: 40px;
}

.footer-logo {
    color: white;
    font-size: 20px;
    font-weight: 800;
    margin-bottom: 15px;
}

footer p {
    max-width: 330px;
    font-size: 14px;
}

footer h4 {
    color: white;
    margin-bottom: 15px;
}

footer a {
    display: block;
    color: #9aa6b8;
    margin: 8px 0;
    font-size: 14px;
}

footer a:hover {
    color: white;
}

.copyright {
    text-align: center;
    border-top: 1px solid #263247;
    margin-top: 40px;
    padding-top: 20px;
    font-size: 13px;
}


/* =========================
   MOBILE
========================= */

@media (max-width: 950px) {

    nav {
        display: none;
    }

    .hero-grid,
    .two-column {
        grid-template-columns: 1fr;
    }

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

    .hero h1 {
        font-size: 43px;
    }

    .footer-grid {
        grid-template-columns:
            1fr 1fr;
    }
}


@media (max-width: 600px) {

    section {
        padding: 65px 0;
    }

    .hero {
        padding: 65px 0;
    }

    .hero h1 {
        font-size: 35px;
    }

    .hero p {
        font-size: 16px;
    }

    .hero-card {
        padding: 25px;
    }

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

    .section-heading h2,
    .app-content h2,
    .about-box h2,
    .dark-section h2,
    .contact-box h2 {
        font-size: 30px;
    }

    .features {
        grid-template-columns: 1fr;
    }

    .contact-box {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }
}
```