:root {
    --blue-950: #0c1929;
    --blue-900: #0f2744;
    --blue-800: #1e3a5f;
    --blue-700: #1d4ed8;
    --blue-600: #2563eb;
    --blue-500: #3b82f6;
    --blue-400: #60a5fa;
    --blue-100: #dbeafe;
    --blue-50: #eff6ff;
    --slate-600: #475569;
    --slate-500: #64748b;
    --white: #ffffff;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 4px 24px rgba(15, 39, 68, 0.08);
    --shadow-lg: 0 20px 50px rgba(15, 39, 68, 0.12);
    --font: "DM Sans", system-ui, sans-serif;
    --font-mono: "JetBrains Mono", ui-monospace, monospace;
    --header-h: 72px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--blue-900);
    background: var(--white);
}

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

a {
    color: var(--blue-600);
    text-decoration: none;
}

a:hover {
    color: var(--blue-700);
}

.container {
    width: min(1120px, 100% - 2rem);
    margin-inline: auto;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--blue-100);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--header-h);
    gap: 1rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    color: var(--blue-900);
    font-weight: 700;
    font-size: 1.15rem;
}

.brand:hover {
    color: var(--blue-700);
}

.brand-mark {
    flex-shrink: 0;
}

.brand-suffix {
    font-weight: 500;
    font-size: 0.75em;
    color: var(--slate-500);
    letter-spacing: 0.02em;
}

.brand--footer .brand-suffix {
    color: var(--blue-400);
}

.site-nav ul {
    display: flex;
    align-items: center;
    gap: 1.75rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-nav a:not(.btn) {
    color: var(--slate-600);
    font-weight: 500;
    font-size: 0.95rem;
}

.site-nav a:not(.btn):hover {
    color: var(--blue-600);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 0;
    border: none;
    background: transparent;
    cursor: pointer;
}

.nav-toggle-bar {
    display: block;
    width: 22px;
    height: 2px;
    margin-inline: auto;
    background: var(--blue-800);
    border-radius: 2px;
    transition: transform 0.2s, opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.65rem 1.35rem;
    font-family: var(--font);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: 999px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.15s;
}

.btn-primary {
    background: linear-gradient(135deg, var(--blue-600), var(--blue-700));
    color: var(--white);
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
    color: var(--white);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-ghost {
    background: transparent;
    color: var(--blue-700);
    border-color: var(--blue-100);
}

.btn-ghost:hover {
    background: var(--blue-50);
    color: var(--blue-700);
}

.btn-nav {
    padding: 0.5rem 1.1rem;
    font-size: 0.9rem;
}

.btn-lg {
    padding: 0.85rem 1.75rem;
    font-size: 1.05rem;
}

/* Hero */
.hero {
    padding: 3.5rem 0 4.5rem;
    background: linear-gradient(165deg, var(--blue-50) 0%, var(--white) 45%, var(--blue-50) 100%);
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.eyebrow {
    margin: 0 0 0.75rem;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--blue-600);
}

.hero h1 {
    margin: 0 0 1.25rem;
    font-size: clamp(2rem, 4.5vw, 3rem);
    line-height: 1.15;
    font-weight: 700;
    color: var(--blue-950);
    letter-spacing: -0.02em;
}

.hero-lead {
    margin: 0 0 2rem;
    font-size: 1.125rem;
    color: var(--slate-600);
    max-width: 32rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.hero-visual {
    position: relative;
    min-height: 280px;
}

.hero-card {
    position: absolute;
    padding: 1.5rem 1.75rem;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--blue-100);
}

.hero-card-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--blue-500);
    margin-bottom: 0.5rem;
}

.hero-card--web {
    top: 10%;
    left: 5%;
    width: min(240px, 90%);
}

.hero-card--web code {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    color: var(--blue-800);
}

.hero-card--mobile {
    bottom: 8%;
    right: 0;
    color: var(--blue-600);
}

/* Sections */
.section-header {
    text-align: center;
    max-width: 36rem;
    margin: 0 auto 3rem;
}

.section-header h2 {
    margin: 0 0 0.75rem;
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    color: var(--blue-950);
}

.section-header p {
    margin: 0;
    color: var(--slate-600);
    font-size: 1.05rem;
}

.services {
    padding: 5rem 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.service-card {
    padding: 2rem 1.75rem;
    background: var(--white);
    border: 1px solid var(--blue-100);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: border-color 0.2s, transform 0.2s;
}

.service-card:hover {
    border-color: var(--blue-400);
    transform: translateY(-4px);
}

.service-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1.25rem;
    color: var(--blue-600);
}

.service-card h3 {
    margin: 0 0 0.75rem;
    font-size: 1.25rem;
    color: var(--blue-950);
}

.service-card p {
    margin: 0 0 1.25rem;
    color: var(--slate-600);
    font-size: 0.95rem;
}

.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.service-tags li {
    padding: 0.25rem 0.65rem;
    font-size: 0.8rem;
    font-weight: 500;
    background: var(--blue-50);
    color: var(--blue-700);
    border-radius: 999px;
}

.process {
    padding: 5rem 0;
    background: var(--blue-950);
    color: var(--blue-100);
}

.process .section-header h2 {
    color: var(--white);
}

.process .section-header p {
    color: var(--blue-400);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: none;
}

.process-steps li {
    padding: 1.75rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(96, 165, 250, 0.2);
    border-radius: var(--radius-lg);
}

.step-num {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--blue-400);
    margin-bottom: 1rem;
}

.process-steps h3 {
    margin: 0 0 0.5rem;
    font-size: 1.2rem;
    color: var(--white);
}

.process-steps p {
    margin: 0;
    font-size: 0.95rem;
    color: var(--blue-100);
    opacity: 0.9;
}

.about {
    padding: 5rem 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
    align-items: start;
}

.about-copy h2 {
    margin: 0 0 1.25rem;
    font-size: clamp(1.5rem, 3vw, 2rem);
    color: var(--blue-950);
}

.about-copy p {
    margin: 0 0 1rem;
    color: var(--slate-600);
}

.about-stats {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.about-stats li {
    padding: 1.25rem 1.5rem;
    background: var(--blue-50);
    border-radius: var(--radius);
    border-left: 4px solid var(--blue-600);
}

.about-stats strong {
    display: block;
    font-size: 1.05rem;
    color: var(--blue-950);
    margin-bottom: 0.25rem;
}

.about-stats span {
    font-size: 0.9rem;
    color: var(--slate-600);
}

.contact {
    padding: 5rem 0 6rem;
}

.contact-box {
    text-align: center;
    padding: 3.5rem 2rem;
    background: linear-gradient(135deg, var(--blue-600), var(--blue-800));
    border-radius: var(--radius-lg);
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

.contact-box h2 {
    margin: 0 0 0.75rem;
    font-size: clamp(1.5rem, 3vw, 2rem);
}

.contact-box p {
    margin: 0 0 1.75rem;
    opacity: 0.92;
    max-width: 28rem;
    margin-inline: auto;
}

.contact-box .btn-primary {
    background: var(--white);
    color: var(--blue-700);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.contact-box .btn-primary:hover {
    color: var(--blue-800);
    background: var(--blue-50);
}

/* Footer */
.site-footer {
    padding: 2.5rem 0;
    background: var(--blue-950);
    color: var(--blue-400);
}

.footer-inner {
    text-align: center;
}

.brand--footer {
    justify-content: center;
    color: var(--white);
    margin-bottom: 0.5rem;
}

.brand--footer:hover {
    color: var(--blue-100);
}

.footer-tagline {
    margin: 0 0 1rem;
    font-size: 0.9rem;
}

.footer-copy {
    margin: 0;
    font-size: 0.85rem;
    opacity: 0.7;
}

/* Mobile */
@media (max-width: 900px) {
    .hero-grid {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        min-height: 220px;
        order: -1;
    }

    .services-grid,
    .process-steps {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .site-nav {
        position: fixed;
        inset: var(--header-h) 0 auto 0;
        background: var(--white);
        border-bottom: 1px solid var(--blue-100);
        padding: 1rem 0 1.5rem;
        transform: translateY(-120%);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.25s, opacity 0.25s;
    }

    .site-nav.is-open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .site-nav ul {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 0 1rem;
    }

    .site-nav li {
        border-bottom: 1px solid var(--blue-50);
    }

    .site-nav a {
        display: block;
        padding: 0.85rem 0.5rem;
    }

    .site-nav .btn-nav {
        margin-top: 0.75rem;
        text-align: center;
    }

    .hero {
        padding-top: 2rem;
    }

    .hero-card--web {
        left: 0;
    }

    .hero-card--mobile {
        right: 0;
    }
}