:root {
    --color-primary: #0b63ce;
    --color-primary-dark: #084fa6;
    --color-primary-soft: #eef6ff;
    --color-ink: #0f172a;
    --color-text: #475569;
    --color-muted: #64748b;
    --color-line: #dbe4ee;
    --color-surface: #ffffff;
    --color-surface-alt: #f7f9fc;
    --color-dark: #0c3263;
    --shell: 1440px;
    --content: 760px;
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 28px;
    --shadow-soft: 0 18px 50px rgba(15, 23, 42, 0.08);
    --shadow-window: 0 30px 80px rgba(15, 23, 42, 0.12), 0 4px 16px rgba(15, 23, 42, 0.06);
    --transition: 180ms ease;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--color-ink);
    background: var(--color-surface);
    font-family: Inter, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
}

a {
    color: inherit;
}

button,
input,
textarea,
select {
    font: inherit;
}

.shell {
    width: min(calc(100% - 48px), var(--shell));
    margin-inline: auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(219, 228, 238, 0.85);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
}

.site-header__inner {
    min-height: 76px;
    display: flex;
    align-items: center;
    gap: 40px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-weight: 750;
    white-space: nowrap;
}

.brand__mark {
    display: inline-grid;
    place-items: center;
    min-width: 48px;
    height: 34px;
    padding-inline: 8px;
    border-radius: 8px;
    color: #fff;
    background: var(--color-primary);
    font-size: 14px;
    letter-spacing: 0.04em;
}

.brand__text {
    font-size: 18px;
}

.site-nav {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 28px;
}

    .site-nav a {
        color: var(--color-text);
        text-decoration: none;
        font-weight: 600;
    }

        .site-nav a:hover {
            color: var(--color-primary);
        }

.button {
    display: inline-flex;
    min-height: 52px;
    align-items: center;
    justify-content: center;
    padding: 0 24px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 750;
    line-height: 1;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background-color var(--transition);
}

    .button:hover {
        transform: translateY(-2px);
    }

.button--small {
    min-height: 44px;
    padding-inline: 18px;
}

.button--primary {
    color: #fff;
    background: var(--color-primary);
    box-shadow: 0 12px 24px rgba(11, 99, 206, 0.22);
}

    .button--primary:hover {
        background: var(--color-primary-dark);
        box-shadow: 0 16px 28px rgba(11, 99, 206, 0.28);
    }

.button--secondary {
    color: var(--color-ink);
    border-color: var(--color-line);
    background: #fff;
}

    .button--secondary:hover {
        border-color: #b7c6d8;
        box-shadow: var(--shadow-soft);
    }

.button--light {
    color: var(--color-dark);
    background: #fff;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.16);
}

.eyebrow {
    margin: 0 0 16px;
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.eyebrow--light {
    color: #b9d9ff;
}

.hero {
    overflow: hidden;
    padding: 104px 0 132px;
    background: radial-gradient(circle at 50% 4%, rgba(11, 99, 206, 0.10), transparent 34%), linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.hero__content {
    max-width: 900px;
    margin-inline: auto;
    text-align: center;
}

.hero h1 {
    max-width: 900px;
    margin: 0 auto;
    font-size: clamp(46px, 6vw, 82px);
    line-height: 1.02;
    letter-spacing: -0.045em;
    text-wrap: balance;
}

.hero__lead {
    max-width: 760px;
    margin: 28px auto 0;
    color: var(--color-text);
    font-size: clamp(18px, 2vw, 22px);
    line-height: 1.65;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
    margin-top: 36px;
}

.product-window {
    overflow: hidden;
    margin: 0;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: #fff;
    box-shadow: var(--shadow-window);
}

.product-window--hero {
    width: min(100%, 1280px);
    margin: 64px auto 0;
}

.product-window__bar {
    min-height: 54px;
    display: grid;
    grid-template-columns: 110px 1fr 110px;
    align-items: center;
    padding: 0 18px;
    border-bottom: 1px solid #e6edf4;
    background: #f7f9fc;
}

.product-window__dots {
    display: flex;
    gap: 7px;
}

    .product-window__dots span {
        width: 10px;
        height: 10px;
        border-radius: 50%;
        background: #c6d0dc;
    }

.product-window__label {
    overflow: hidden;
    color: var(--color-muted);
    font-size: 13px;
    font-weight: 700;
    text-align: center;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.product-window img {
    display: block;
    width: 100%;
    height: auto;
    background: #edf2f7;
}

.product-window--hero img {
    aspect-ratio: 1280 / 1070;
    object-fit: cover;
}

.benefits {
    padding: 112px 0;
    border-bottom: 1px solid var(--color-line);
}

.section-heading {
    max-width: 760px;
    margin-bottom: 48px;
}

.section-heading--center {
    margin-inline: auto;
    text-align: center;
}

.section-heading h2,
.tour-step__copy h2,
.related h2,
.final-cta h2 {
    margin: 0;
    font-size: clamp(34px, 4vw, 54px);
    line-height: 1.12;
    letter-spacing: -0.035em;
    text-wrap: balance;
}

.benefit-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.benefit-card {
    min-height: 250px;
    padding: 34px;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    box-shadow: 0 12px 34px rgba(15, 23, 42, 0.05);
}

.benefit-card__number {
    display: block;
    margin-bottom: 34px;
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 850;
    letter-spacing: 0.08em;
}

.benefit-card h3,
.module-card h3 {
    margin: 0;
    font-size: 24px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.benefit-card p,
.module-card p {
    margin: 14px 0 0;
    color: var(--color-text);
}

.tour {
    background: var(--color-surface);
}

.tour-step {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(300px, 0.72fr);
    gap: clamp(48px, 7vw, 100px);
    align-items: center;
    padding: 128px 0;
    border-bottom: 1px solid var(--color-line);
}

.tour-step__visual .product-window img {
    aspect-ratio: 1280 / 900;
    object-fit: cover;
}

.tour-step__copy {
    max-width: 500px;
}

.tour-step__number {
    margin: 0 0 28px;
    color: #c5d2e1;
    font-size: 56px;
    font-weight: 850;
    line-height: 1;
    letter-spacing: -0.05em;
}

.tour-step__copy > p:not(.eyebrow):not(.tour-step__number) {
    margin: 22px 0 0;
    color: var(--color-text);
    font-size: 18px;
}

.check-list {
    display: grid;
    gap: 13px;
    margin: 28px 0 0;
    padding: 0;
    list-style: none;
}

    .check-list li {
        position: relative;
        padding-left: 30px;
        color: var(--color-ink);
        font-weight: 650;
    }

        .check-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: 0;
            color: var(--color-primary);
            font-weight: 900;
        }

.related {
    padding: 120px 0;
    background: var(--color-surface-alt);
}

.module-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.module-card {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 22px;
    align-items: center;
    min-height: 180px;
    padding: 30px;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: #fff;
    text-decoration: none;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

    .module-card:hover {
        transform: translateY(-4px);
        border-color: #a9c7e8;
        box-shadow: var(--shadow-soft);
    }

.module-card__index {
    align-self: start;
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 850;
}

.module-card__arrow {
    color: var(--color-primary);
    font-size: 30px;
    transition: transform var(--transition);
}

.module-card:hover .module-card__arrow {
    transform: translateX(4px);
}

.final-cta {
    padding: 110px 0;
}

.final-cta__panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
    padding: clamp(38px, 6vw, 72px);
    border-radius: var(--radius-lg);
    color: #fff;
    background: radial-gradient(circle at 90% 10%, rgba(255, 255, 255, 0.12), transparent 28%), linear-gradient(135deg, #0b63ce 0%, #0c3263 100%);
    box-shadow: 0 28px 70px rgba(12, 50, 99, 0.24);
}

    .final-cta__panel > div {
        max-width: 760px;
    }

.final-cta h2 {
    color: #ffffff !important;
    font-weight: 800;
}

.final-cta .eyebrow,
.final-cta .eyebrow--light {
    color: #bfd9ff !important;
}

.final-cta p:not(.eyebrow) {
    margin: 20px 0 0;
    color: rgba(255, 255, 255, 0.88) !important;
    font-size: 18px;
}

.final-cta__panel > .button,
.final-cta__panel > a.button {
    flex: 0 0 auto;
    align-self: center;
}

.site-footer {
    border-top: 1px solid var(--color-line);
    background: #fff;
}

.site-footer__inner {
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    color: var(--color-muted);
    font-size: 14px;
}

    .site-footer__inner p {
        margin: 0;
    }

    .site-footer__inner div {
        display: flex;
        gap: 22px;
    }

.site-footer a {
    text-decoration: none;
}

    .site-footer a:hover {
        color: var(--color-primary);
    }

@media (max-width: 1100px) {
    .site-nav {
        display: none;
    }

    .site-header__inner {
        justify-content: space-between;
    }

    .tour-step {
        grid-template-columns: 1fr;
        gap: 46px;
    }

    .tour-step__copy {
        max-width: 760px;
    }
}

@media (max-width: 800px) {
    .shell {
        width: min(calc(100% - 32px), var(--shell));
    }

    .hero {
        padding: 76px 0 92px;
    }

    .product-window--hero {
        margin-top: 46px;
    }

    .benefits,
    .related {
        padding: 88px 0;
    }

    .benefit-grid,
    .module-grid {
        grid-template-columns: 1fr;
    }

    .tour-step {
        padding: 88px 0;
    }

    .final-cta {
        padding: 82px 0;
    }

    .final-cta__panel {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 600px) {
    .site-header__inner {
        min-height: 68px;
    }

    .brand__text {
        display: none;
    }

    .site-header .button {
        min-height: 40px;
        padding-inline: 14px;
        font-size: 14px;
    }

    .hero h1 {
        font-size: 42px;
    }

    .hero__lead {
        font-size: 18px;
    }

    .hero__actions {
        flex-direction: column;
    }

        .hero__actions .button {
            width: 100%;
        }

    .product-window__bar {
        grid-template-columns: 72px 1fr 72px;
        min-height: 48px;
        padding-inline: 14px;
    }

    .product-window__dots span {
        width: 8px;
        height: 8px;
    }

    .benefit-card {
        padding: 28px;
    }

    .tour-step__number {
        font-size: 46px;
    }

    .tour-step__copy h2,
    .section-heading h2,
    .related h2,
    .final-cta h2 {
        font-size: 36px;
    }

    .module-card {
        grid-template-columns: 1fr auto;
        min-height: 0;
    }

    .module-card__index {
        display: none;
    }

    .site-footer__inner {
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        padding: 28px 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}