:root {
    --color-bg: #f5f2eb;
    --color-surface: #ffffff;
    --color-surface-soft: rgba(255, 255, 255, 0.9);
    --color-mint: #b9dfcd;
    --color-mint-soft: #eaf5ef;
    --color-text: #222129;
    --color-muted: #59556a;
    --color-border: rgba(34, 33, 41, 0.12);
    --color-accent: #de9625;
    --color-accent-dark: #c57e10;

    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 24px;

    --shadow-soft: 0 12px 28px rgba(34, 33, 41, 0.08);
    --shadow-nav: -8px 0 24px rgba(34, 33, 41, 0.16);

    --space-1: clamp(0.25rem, 0.5vw, 0.5rem);
    --space-2: clamp(0.5rem, 1vw, 0.75rem);
    --space-3: clamp(0.75rem, 1.2vw, 1rem);
    --space-4: clamp(1rem, 1.8vw, 1.5rem);
    --space-5: clamp(1.5rem, 2.4vw, 2rem);
    --space-6: clamp(2rem, 3vw, 2.75rem);
    --space-7: clamp(2.75rem, 5vw, 4.5rem);

    --container: 1160px;
    --content-max: 66ch;
    --header-height: 72px;

    --page-pad-x: clamp(1rem, 4vw, 1.5rem);
    --section-gap: var(--space-7);
    --card-padding: clamp(1rem, 2.5vw, 1.6rem);
}

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

html, body {
    margin: 0;
    padding: 0;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: 'Inter', sans-serif;
    color: var(--color-text);
    line-height: 1.55;
    background: var(--color-bg);
}

body.nav-open {
    overflow: hidden;
    touch-action: none;
}

img {
    max-width: 100%;
    display: block;
}

a { color: inherit; }

h1, h2, h3 {
    margin: 0;
    line-height: 1.16;
    letter-spacing: -0.02em;
    text-wrap: balance;
}

h1 { font-size: clamp(1.9rem, 7vw, 3.1rem); }
h2 { font-size: clamp(1.4rem, 4.6vw, 2.1rem); }
h3 { font-size: clamp(1.08rem, 3.2vw, 1.35rem); }

p {
    margin: 0;
    max-width: var(--content-max);
}

ul, ol {
    margin: 0;
    padding-left: 1.25rem;
}

main {
    width: 100%;
    isolation: isolate;
}

.page-shell {
    width: min(100%, var(--container));
    margin: 0 auto;
    padding: clamp(1rem, 2vw, 1.4rem) var(--page-pad-x) clamp(3rem, 8vw, 5rem);
    overflow-x: clip;
}

.page-shell > *:first-child { margin-top: 0; }

.section { margin-top: var(--section-gap); }

.section__head {
    margin-bottom: clamp(1rem, 2.8vw, 2rem);
    max-width: 64ch;
    display: grid;
    gap: var(--space-2);
}

.eyebrow {
    display: inline-block;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    font-weight: 700;
    color: #3f5550;
}

.muted { color: var(--color-muted); }

.card {
    background: var(--color-surface-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(2px);
}

.btn {
    min-height: 46px;
    padding: 0.72rem 1.2rem;
    border-radius: 999px;
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.96rem;
    transition: background-color .2s ease, border-color .2s ease, transform .2s ease;
}

.btn:focus-visible,
.topbar__link:focus-visible,
.nav-toggle:focus-visible,
.contact__form input:focus-visible,
.contact__form textarea:focus-visible {
    outline: 2px solid var(--color-text);
    outline-offset: 3px;
}

.btn--primary { background: var(--color-accent); color: #201f26; }
.btn--primary:hover { background: var(--color-accent-dark); transform: translateY(-1px); }
.btn--secondary { background: #fff; border-color: var(--color-border); }
.btn--secondary:hover { background: #f4f2ef; border-color: rgba(34, 33, 41, 0.2); }

.topbar {
    position: sticky;
    top: 0;
    z-index: 1400;
    background: rgba(245, 242, 235, 0.96);
    border-bottom: 1px solid rgba(34, 33, 41, 0.08);
    backdrop-filter: blur(8px);
}

.topbar__inner {
    width: min(100%, var(--container));
    margin: 0 auto;
    min-height: var(--header-height);
    padding: 0.5rem var(--page-pad-x);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    row-gap: 0.22rem;
    gap: var(--space-3);
}

.topbar__brand {
    text-decoration: none;
    min-width: 0;
}

.topbar__brand-main {
    display: block;
    font-size: clamp(1.55rem, 6vw, 1.95rem);
    line-height: 0.92;
    text-transform: lowercase;
}

.topbar__brand-sub {
    display: block;
    font-size: clamp(0.54rem, 1.6vw, 0.66rem);
    letter-spacing: 0.03em;
}

.nav-toggle {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    background: #fff;
    display: inline-grid;
    place-content: center;
    gap: 4px;
    flex-shrink: 0;
    cursor: pointer;
}

.nav-toggle__line {
    width: 18px;
    height: 2px;
    background: #2f2c33;
    border-radius: 2px;
}

.menu-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1490;
    background: rgba(20, 20, 26, 0.52);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity .22s ease, visibility .22s ease;
}

.menu-backdrop.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.topbar__panel {
    width: 100%;
    padding: 0 0 0.34rem;
}

.topbar__menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.3rem 0.42rem;
    align-items: stretch;
}

.topbar__menu > li {
    min-width: 0;
}

.topbar__link {
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    white-space: nowrap;
    padding: 0.5rem 0.42rem;
    border-radius: 10px;
    font-weight: 500;
    min-height: 40px;
    font-size: clamp(0.73rem, 2.6vw, 0.86rem);
    line-height: 1.2;
    width: 100%;
}

.topbar__link:hover { background: #f2f0ec; }

.topbar__link--active {
    background: #ebf7f1;
    border: 1px solid #d5eadf;
}

.topbar__mobile-cta {
    margin-top: auto;
    width: 100%;
    position: sticky;
    bottom: 0;
    background: #fff;
    padding-top: var(--space-2);
}

.hero,
.trailer-hero,
.web-hero,
.system-hero,
.about__intro,
.contact,
.system-cta-box {
    padding: clamp(1.15rem, 3.5vw, 2.1rem);
}

.hero {
    display: grid;
    gap: clamp(1rem, 3vw, 1.9rem);
    background: linear-gradient(145deg, var(--color-mint), rgba(255, 255, 255, 0.85));
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.hero > div:first-child,
.web-hero,
.system-hero,
.about__intro,
.contact__intro {
    display: grid;
    gap: var(--space-2);
}

.hero p {
    font-size: clamp(0.98rem, 2.8vw, 1.06rem);
    max-width: 50ch;
    color: #32413f;
}

.hero__actions {
    display: grid;
    gap: var(--space-2);
    justify-items: stretch;
}

.hero__actions .btn { width: 100%; }

.services-grid,
.value-grid,
.steps-grid,
.info-grid,
.about__people,
.trailer-feature-grid,
.trailer-benefit-grid,
.web-two-col,
.system-grid,
.contact,
.trailer-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: clamp(0.85rem, 2.2vw, 1.35rem);
}

.service-card,
.info-card,
.step-card,
.about-card,
.trailer-feature-card,
.trailer-benefit-card {
    padding: var(--card-padding);
    height: 100%;
}

.section.card {
    display: grid;
    gap: var(--space-3);
    padding: var(--card-padding);
}

.about-card {
    display: grid;
    gap: var(--space-3);
}

.about-card__photo {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: var(--radius-sm);
}

.about-card__content {
    display: grid;
    gap: 0.55rem;
}

.service-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.service-card .btn {
    margin-top: auto;
    width: fit-content;
}

.info-card--mint,
.trailer-value,
.web-price-box {
    background: linear-gradient(150deg, rgba(185, 223, 205, 0.88), rgba(255, 255, 255, 0.8));
    border-left: 3px solid var(--color-accent);
}

.steps-grid { counter-reset: step; }

.step-card {
    position: relative;
    padding-top: 2.6rem;
}

.step-card::before {
    counter-increment: step;
    content: "0" counter(step);
    position: absolute;
    top: 1rem;
    left: 1rem;
    font-size: 0.8rem;
    font-weight: 700;
    color: #3f5550;
}

.trailer-process {
    display: grid;
    gap: var(--space-3);
    max-width: 76ch;
}

.web-price-box {
    display: grid;
    gap: clamp(0.6rem, 1.8vw, 1rem);
    align-content: start;
    padding: clamp(1.2rem, 3.8vw, 1.95rem) clamp(1rem, 3.4vw, 1.75rem);
}

.trailer-value {
    display: grid;
    align-content: start;
    gap: clamp(0.5rem, 1.5vw, 0.9rem);
    padding: clamp(1rem, 3.2vw, 1.7rem) clamp(1rem, 3.2vw, 1.6rem);
}

.trailer-value h2 {
    margin-bottom: 0.15rem;
}

.trailer-value p,
.web-price-box p {
    max-width: none;
}

.web-price-big {
    font-size: clamp(2rem, 8vw, 2.8rem);
    font-weight: 700;
    line-height: 1.05;
}

.contact__form {
    display: grid;
    gap: 0.6rem;
    padding: var(--card-padding);
}

.contact__form input,
.contact__form textarea {
    width: 100%;
    min-height: 44px;
    border: 1px solid rgba(34, 33, 41, 0.2);
    border-radius: 10px;
    padding: 10px 12px;
    font: inherit;
    background: #fff;
}

.contact__form .btn {
    width: 100%;
    margin-top: 0.45rem;
}

.contact__alert {
    padding: 10px 12px;
    border-radius: 10px;
    font-weight: 500;
    margin-bottom: 12px;
}

.contact__alert--success { background: #e4f5ec; border: 1px solid #9fd2b6; }
.contact__alert--error { background: #fae5e2; border: 1px solid #e2a39a; }

.system-image-grid {
    display: grid;
    gap: 0.6rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.system-thumb {
    border-radius: 14px;
    overflow: hidden;
    cursor: pointer;
}

.image-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    display: none;
    place-items: center;
    z-index: 300;
    padding: var(--space-4);
}

.overlay-content img {
    max-height: 72vh;
    border-radius: 12px;
}

.overlay-content p {
    color: #fff;
    margin-top: 8px;
}

.site-footer {
    margin-top: auto;
    background: var(--color-mint);
    padding: 1.1rem var(--page-pad-x);
    text-align: center;
}

@media (min-width: 768px) {
    :root {
        --page-pad-x: clamp(1.4rem, 3.5vw, 2rem);
        --section-gap: clamp(3.2rem, 7vw, 4.8rem);
    }

    .hero {
        grid-template-columns: minmax(0, 1.2fr) minmax(250px, 0.9fr);
        align-items: center;
        min-height: 320px;
    }

    .hero__actions {
        align-content: center;
        justify-items: start;
    }

    .hero__actions .btn {
        width: auto;
        min-width: 182px;
    }

    .services-grid,
    .value-grid,
    .trailer-benefit-grid,
    .steps-grid,
    .system-image-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .web-two-col,
    .system-grid,
    .contact,
    .about__people,
    .trailer-hero {
        grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
        gap: clamp(1rem, 2.5vw, 1.8rem);
        align-items: stretch;
    }

    .contact__form .btn {
        width: auto;
        justify-self: start;
        min-width: 180px;
    }
}

@media (min-width: 1024px) {
    :root {
        --page-pad-x: clamp(2rem, 4vw, 2.6rem);
        --header-height: 78px;
        --section-gap: clamp(4.2rem, 7vw, 6rem);
    }

    body.nav-open {
        overflow: auto;
        touch-action: auto;
    }

    .nav-toggle,
    .menu-backdrop,
    .topbar__mobile-cta {
        display: none;
    }

    .topbar__inner {
        padding-block: 0.62rem;
        align-items: center;
        flex-wrap: nowrap;
        row-gap: 0;
        gap: var(--space-4);
    }

    .topbar__panel {
        position: static;
        transform: none;
        width: auto;
        height: auto;
        padding: 0;
        visibility: visible;
        pointer-events: auto;
        box-shadow: none;
        background: transparent;
        border: 0;
        overflow: visible;
        display: block;
    }

    .topbar__menu {
        display: flex;
        align-items: center;
        gap: 0.35rem;
    }

    .topbar__link {
        padding: 0.62rem 0.78rem;
        min-height: 42px;
    }

    .hero,
    .trailer-hero,
    .web-hero,
    .system-hero,
    .about__intro,
    .contact,
    .system-cta-box,
    .section.card {
        border-radius: var(--radius-lg);
    }

    .hero {
        grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.9fr);
        min-height: 380px;
    }

    .services-grid,
    .value-grid,
    .trailer-feature-grid,
    .trailer-benefit-grid {
        grid-template-columns: repeat(12, minmax(0, 1fr));
        gap: clamp(0.9rem, 1.8vw, 1.4rem);
    }

    .services-grid > *,
    .value-grid > *,
    .trailer-feature-grid > *,
    .trailer-benefit-grid > * { grid-column: span 4; }

    .steps-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: clamp(0.9rem, 1.4vw, 1.2rem);
    }

    .web-two-col,
    .system-grid,
    .trailer-hero,
    .contact {
        grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.95fr);
    }

    .about__people {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .system-image-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.about__people {
    margin-bottom: clamp(1.1rem, 3.4vw, 1.9rem);
}

@media (max-width: 767px) {
    #about-title,
    #trailer-title,
    #system-title,
    #web-title {
        font-size: clamp(1.3rem, 5.4vw, 1.75rem);
        line-height: 1.22;
    }

    .topbar {
        backdrop-filter: none;
        background: #f5f2eb;
    }

    .card {
        backdrop-filter: none;
        box-shadow: 0 8px 18px rgba(34, 33, 41, 0.06);
    }

    .menu-backdrop {
        transition: opacity .16s ease;
    }
}