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

:root {
    --color-primary: #0ea5e9;
    --color-primary-dark: #0284c7;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-border: #e2e8f0;
    --color-dark: #0f172a;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --max-width: 1100px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- Header ---- */

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--color-text);
}

.logo__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--color-primary);
    color: #fff;
    font-weight: 700;
    font-size: 14px;
    border-radius: 8px;
    letter-spacing: -0.5px;
}

.logo__text {
    font-weight: 600;
    font-size: 18px;
}

.nav__list {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav__link {
    text-decoration: none;
    color: var(--color-text-light);
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s;
    padding: 4px 0;
    border-bottom: 2px solid transparent;
}

.nav__link:hover {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
}

/* ---- Hero ---- */

.hero {
    padding: 80px 0 60px;
    text-align: center;
}

.hero__title {
    font-size: 42px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.hero__subtitle {
    font-size: 18px;
    color: var(--color-text-light);
    max-width: 560px;
    margin: 0 auto 36px;
}

.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
}

.btn--primary {
    background: var(--color-primary);
    color: #fff;
}

.btn--primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

.hero__icons {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 60px;
    padding: 32px 40px;
    background: var(--color-bg-alt);
    border-radius: 16px;
    border: 1px solid var(--color-border);
}

.hero__icon-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.hero__icon-item svg {
    width: 44px;
    height: 44px;
    color: var(--color-primary);
}

.hero__icon-item span {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-light);
}

/* ---- About ---- */

.about {
    padding: 80px 0;
}

.section__title {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
}

.section__subtitle {
    text-align: center;
    color: var(--color-text-light);
    font-size: 17px;
    margin-bottom: 48px;
}

.about__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.about__card {
    padding: 28px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-bg);
}

.about__card-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-primary);
}

.about__card p {
    color: var(--color-text-light);
    font-size: 15px;
    line-height: 1.7;
}

/* ---- Services ---- */

.services {
    padding: 80px 0;
    background: var(--color-bg-alt);
}

.services__icons-bar {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 48px;
    padding: 24px 32px;
    background: var(--color-bg);
    border-radius: 16px;
    border: 1px solid var(--color-border);
}

.services__icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.services__icon svg {
    width: 36px;
    height: 36px;
    color: var(--color-primary);
}

.services__icon span {
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-light);
}

.services__card {
    display: flex;
    gap: 28px;
    padding: 36px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    margin-bottom: 24px;
}

.services__card-icon svg {
    width: 48px;
    height: 48px;
    color: var(--color-primary);
    flex-shrink: 0;
}

.services__card-body h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
}

.services__card-body p {
    color: var(--color-text-light);
    font-size: 15px;
    margin-bottom: 16px;
}

.services__card-body ul {
    list-style: none;
    padding: 0;
}

.services__card-body li {
    position: relative;
    padding-left: 20px;
    color: var(--color-text-light);
    font-size: 15px;
    margin-bottom: 8px;
}

.services__card-body li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
}

.services__note {
    margin-top: 8px;
    padding-left: 12px;
    border-left: 3px solid var(--color-primary);
    font-style: italic;
    font-size: 14px !important;
}

/* ---- Technologies ---- */

.technologies {
    padding: 80px 0;
}

.tech__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.tech__card {
    padding: 28px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-bg);
    transition: border-color 0.2s;
}

.tech__card:hover {
    border-color: var(--color-primary);
}

.tech__card h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--color-primary);
}

.tech__card h3 svg {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}

.tech__sub {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
    margin: 12px 0 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tech__card ul {
    list-style: none;
}

.tech__card li {
    position: relative;
    padding-left: 16px;
    font-size: 14px;
    color: var(--color-text-light);
    margin-bottom: 6px;
}

.tech__card li::before {
    content: '›';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 600;
}

/* ---- Contact ---- */

.contact {
    padding: 80px 0;
    background: var(--color-bg-alt);
}

.contact__grid {
    max-width: 560px;
    margin: 0 auto;
}

.contact__item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px 24px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    margin-bottom: 16px;
}

.contact__item svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.contact__item strong {
    display: block;
    font-size: 14px;
    margin-bottom: 2px;
}

.contact__item a,
.contact__item span {
    color: var(--color-text-light);
    font-size: 15px;
    text-decoration: none;
}

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

/* ---- Footer ---- */

.footer {
    background: var(--color-dark);
    color: #94a3b8;
    padding: 32px 0;
}

.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer__brand {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 16px;
}

.footer__tagline {
    display: block;
    font-size: 13px;
    margin-top: 2px;
}

.footer__nav {
    display: flex;
    gap: 24px;
}

.footer__nav a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.footer__nav a:hover {
    color: #fff;
}

/* ---- Responsive ---- */

@media (max-width: 768px) {
    .hero__title {
        font-size: 28px;
    }

    .hero__icons {
        flex-wrap: wrap;
        gap: 24px;
        padding: 24px;
    }

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

    .services__icons-bar {
        flex-wrap: wrap;
        gap: 20px;
        padding: 20px;
    }

    .services__card {
        flex-direction: column;
        gap: 16px;
        padding: 24px;
    }

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

    .nav__toggle {
        display: flex;
    }

    .nav__list {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        padding: 16px 24px;
        gap: 16px;
    }

    .nav__list--open {
        display: flex;
    }

    .footer__inner {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .about__grid {
        grid-template-columns: 1fr 1fr;
    }

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