:root {
    --bg: #FFFFFF;
    --surface: #F8FAFC;
    --surface-2: #F1F5F9;
    --ink: #0A1628;
    --text: #0F172A;
    --muted: #64748B;
    --border: rgba(15, 23, 42, 0.08);
    --border-strong: rgba(15, 23, 42, 0.15);
    --accent: #2563EB;
    --accent-2: #06B6D4;
    --accent-3: #F59E0B;
    --accent-soft: rgba(37, 99, 235, 0.08);
    --gradient: linear-gradient(135deg, #2563EB 0%, #06B6D4 100%);
    --font-sans: 'Manrope', sans-serif;
    --font-display: 'Bricolage Grotesque', sans-serif;
    --font-serif: 'Instrument Serif', serif;
    --font-mono: 'Space Mono', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    line-height: 1.6;
}
a { color: inherit; text-decoration: none; transition: color 0.2s; }
button { cursor: pointer; font-family: inherit; }
img, video { max-width: 100%; display: block; }

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 { font-family: var(--font-display); letter-spacing: -0.03em; line-height: 1.1; font-weight: 700; }
h1 { font-size: clamp(2.5rem, 6vw, 5rem); }
h2 { font-size: clamp(2rem, 4.5vw, 3.5rem); }
h3 { font-size: clamp(1.3rem, 2vw, 1.8rem); }
h4 { font-size: 1.2rem; }
em { font-family: var(--font-serif); font-style: italic; font-weight: 400; }

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.eyebrow {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}
.eyebrow::before {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--accent);
}

/* ===== LAYOUT ===== */
.container { max-width: 1280px; margin: 0 auto; padding: 0 clamp(20px, 5vw, 60px); }
.section { padding: clamp(80px, 10vw, 130px) 0; }
.section-sm { padding: clamp(60px, 7vw, 90px) 0; }
.section-alt { background: var(--surface); }
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* ===== NAVIGATION ===== */
nav#nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}
nav#nav.scrolled {
    border-bottom-color: var(--border);
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
}
.nav-inner {
    max-width: 1280px; margin: 0 auto;
    padding: 18px clamp(20px, 5vw, 60px);
    display: flex; align-items: center; justify-content: space-between;
    gap: 30px;
}
.logo {
    display: flex; align-items: center; gap: 12px;
    font-family: var(--font-display); font-weight: 700;
    font-size: 19px; letter-spacing: -0.02em;
    flex-shrink: 0;
}
.logo img { border-radius: 50%; object-fit: cover; border: 2px solid var(--border); }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
    font-size: 13.5px; font-weight: 500;
    padding: 8px 14px; border-radius: 8px;
    color: var(--muted);
    transition: all 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); background: var(--surface-2); }
.nav-cta {
    background: var(--ink) !important;
    color: white !important;
    padding: 10px 20px !important;
    border-radius: 100px !important;
    font-weight: 600 !important;
    transition: all 0.3s !important;
}
.nav-cta:hover { background: var(--accent) !important; transform: translateY(-1px); }
.menu-toggle {
    display: none; background: none; border: none;
    padding: 8px; border-radius: 8px; color: var(--ink);
}
.mobile-menu {
    position: fixed; inset: 0; background: var(--bg); z-index: 90;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 20px; transform: translateY(-100%); transition: transform 0.4s cubic-bezier(0.19, 1, 0.22, 1);
}
.mobile-menu.open { transform: translateY(0); }
.mobile-menu a { font-family: var(--font-display); font-size: 22px; font-weight: 600; }

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 14px 26px; border-radius: 100px;
    font-size: 14.5px; font-weight: 600;
    border: none;
    transition: all 0.3s ease;
    font-family: var(--font-sans);
    white-space: nowrap;
}
.btn-primary { background: var(--ink); color: white; }
.btn-primary:hover { background: var(--accent); transform: translateY(-2px); box-shadow: 0 10px 25px rgba(37, 99, 235, 0.25); }
.btn-outline { background: transparent; color: var(--ink); border: 1.5px solid var(--border-strong); }
.btn-outline:hover { background: var(--ink); color: white; border-color: var(--ink); }
.btn-ghost { background: var(--surface-2); color: var(--ink); }
.btn-ghost:hover { background: var(--border); }

/* ===== HERO ===== */
.hero {
    position: relative;
    padding: 160px 0 100px;
    background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
    overflow: hidden;
}
.hero-bg {
    position: absolute; inset: 0;
    background:
        radial-gradient(600px 400px at 15% 20%, rgba(37, 99, 235, 0.08), transparent 70%),
        radial-gradient(500px 400px at 85% 30%, rgba(6, 182, 212, 0.06), transparent 70%);
    pointer-events: none;
}
.hero-content { position: relative; z-index: 2; max-width: 950px; }
.hero h1 { margin-bottom: 28px; }
.hero .lead {
    font-size: clamp(1.05rem, 1.6vw, 1.3rem);
    line-height: 1.6;
    color: var(--muted);
    max-width: 700px;
    margin-bottom: 40px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 60px; }
.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 24px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
    max-width: 900px;
}
.stat-num {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--ink);
    letter-spacing: -0.03em;
    line-height: 1;
}
.stat-label {
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--muted);
    margin-top: 8px;
    letter-spacing: 0.02em;
}

/* ===== PAGE HEADER ===== */
.page-header {
    padding: 160px 0 80px;
    background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
    border-bottom: 1px solid var(--border);
}
.breadcrumbs {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--muted);
    margin-bottom: 20px;
    display: flex;
    gap: 8px;
    align-items: center;
}
.breadcrumbs a:hover { color: var(--accent); }
.page-header h1 { max-width: 900px; margin-bottom: 20px; }
.page-header .lead { font-size: 1.15rem; color: var(--muted); max-width: 700px; }

/* ===== LOGO MARQUEE ===== */
.logo-strip {
    padding: 30px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    overflow: hidden;
    background: var(--bg);
}
.logo-marquee {
    display: flex; gap: 60px;
    animation: marquee 40s linear infinite;
    width: max-content;
}
.logo-item {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    color: var(--muted);
    opacity: 0.5;
    white-space: nowrap;
    display: flex; align-items: center; gap: 60px;
}
.logo-item::after { content: '✦'; color: var(--accent); opacity: 0.6; font-size: 14px; }
@keyframes marquee { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* ===== BENTO / CARDS ===== */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }

.card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}
.card:hover {
    border-color: var(--accent);
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.06);
    transform: translateY(-4px);
}
.card-icon {
    width: 48px; height: 48px;
    border-radius: 12px;
    background: var(--accent-soft);
    color: var(--accent);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px;
    font-size: 22px;
}
.card h3 { font-size: 1.25rem; margin-bottom: 12px; }
.card p { color: var(--muted); font-size: 14.5px; line-height: 1.65; }
.card-link {
    display: inline-flex; align-items: center; gap: 6px;
    margin-top: 20px;
    font-size: 14px; font-weight: 600;
    color: var(--accent);
}
.card-link:hover { gap: 10px; }

/* ===== SERVICE DETAIL PAGE ===== */
.service-hero {
    padding: 160px 0 80px;
    background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
}
.service-hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}
.service-hero h1 { margin-bottom: 24px; }
.service-hero p { font-size: 1.15rem; color: var(--muted); margin-bottom: 32px; max-width: 560px; }

.feature-visual {
    aspect-ratio: 4/3;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--surface) 0%, var(--surface-2) 100%);
    border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    position: relative;
    overflow: hidden;
}
.feature-visual::before {
    content: '';
    position: absolute; inset: 0;
    background:
        radial-gradient(300px 300px at 30% 30%, rgba(37, 99, 235, 0.15), transparent 70%),
        radial-gradient(300px 300px at 70% 70%, rgba(6, 182, 212, 0.1), transparent 70%);
}
.feature-visual-content {
    position: relative; z-index: 2;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--muted);
    text-align: center;
    padding: 20px;
}
.feature-visual-content svg { width: 80px; height: 80px; margin-bottom: 16px; color: var(--accent); }

/* ===== CHECKLIST ===== */
.checklist { list-style: none; display: grid; gap: 14px; }
.checklist li {
    display: flex; align-items: flex-start; gap: 12px;
    font-size: 15px; color: var(--text);
    line-height: 1.55;
}
.checklist li::before {
    content: '';
    flex-shrink: 0;
    width: 20px; height: 20px;
    border-radius: 50%;
    background: var(--accent-soft) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232563EB' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'></polyline></svg>") center/12px no-repeat;
    margin-top: 2px;
}

/* ===== PROCESS STEPS ===== */
.process-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
}
.process-step {
    background: var(--bg);
    padding: 32px 28px;
    transition: all 0.3s ease;
}
.process-step:hover { background: var(--surface); }
.step-num {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 2.5rem;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 16px;
}
.process-step h3 { font-size: 1.15rem; margin-bottom: 10px; }
.process-step p { font-size: 14px; color: var(--muted); line-height: 1.6; }

/* ===== TECH STACK ===== */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
}
.tech-pill {
    padding: 14px 18px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 12.5px;
    font-weight: 600;
    color: var(--text);
    transition: all 0.2s;
}
.tech-pill:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

/* ===== FAQ ===== */
.faq-list { display: grid; gap: 12px; }
.faq-item {
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--bg);
    overflow: hidden;
    transition: border-color 0.2s;
}
.faq-item:hover { border-color: var(--border-strong); }
.faq-question {
    width: 100%;
    padding: 22px 26px;
    background: none;
    border: none;
    text-align: left;
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--ink);
    display: flex; justify-content: space-between; align-items: center;
    gap: 20px;
    cursor: pointer;
}
.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--accent);
    transition: transform 0.3s;
    line-height: 1;
}
.faq-item.open .faq-question::after { transform: rotate(45deg); }
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
    padding: 0 26px;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.7;
}
.faq-item.open .faq-answer { max-height: 500px; padding: 0 26px 24px; }

/* ===== CASE STUDY CARDS ===== */
.case-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}
.case-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: 0 20px 40px rgba(15, 23, 42, 0.06); }
.case-thumb {
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, #0A1628 0%, #1e293b 100%);
    position: relative;
    overflow: hidden;
    display: flex; align-items: center; justify-content: center;
}
.case-thumb::before {
    content: '';
    position: absolute; inset: 0;
    background:
        radial-gradient(200px 200px at 30% 30%, rgba(37, 99, 235, 0.3), transparent 70%),
        radial-gradient(200px 200px at 70% 70%, rgba(6, 182, 212, 0.2), transparent 70%);
}
.case-thumb-label {
    position: relative; z-index: 2;
    color: rgba(255,255,255,0.6);
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}
.case-content { padding: 28px; }
.case-tag {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 700;
    margin-bottom: 12px;
    display: inline-block;
}
.case-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
.case-card p { font-size: 14px; color: var(--muted); line-height: 1.6; }
.case-metrics {
    display: flex; gap: 24px; margin-top: 20px;
    padding-top: 20px; border-top: 1px solid var(--border);
}
.case-metric-num { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; color: var(--ink); }
.case-metric-label { font-family: var(--font-mono); font-size: 10.5px; color: var(--muted); margin-top: 4px; }

/* ===== CTA BANNER ===== */
.cta-banner {
    background: var(--ink);
    color: white;
    border-radius: 20px;
    padding: 60px;
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 40px;
    align-items: center;
    position: relative;
    overflow: hidden;
}
.cta-banner::before {
    content: '';
    position: absolute; inset: 0;
    background:
        radial-gradient(400px 400px at 20% 30%, rgba(37, 99, 235, 0.3), transparent 70%),
        radial-gradient(400px 400px at 80% 70%, rgba(6, 182, 212, 0.2), transparent 70%);
}
.cta-banner > * { position: relative; z-index: 2; }
.cta-banner h2 { color: white; margin-bottom: 16px; }
.cta-banner p { color: rgba(255,255,255,0.75); font-size: 1.05rem; }

/* ===== FOOTER ===== */
footer {
    background: var(--ink);
    color: white;
    padding: 80px 0 30px;
    margin-top: 0;
}
.footer-grid-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand p {
    color: rgba(255,255,255,0.6);
    font-size: 14.5px;
    margin-top: 20px;
    max-width: 340px;
    line-height: 1.7;
}
.footer-col h4 {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.5);
    margin-bottom: 20px;
}
.footer-col ul { list-style: none; display: grid; gap: 12px; }
.footer-col a {
    color: rgba(255,255,255,0.85);
    font-size: 14.5px;
}
.footer-col a:hover { color: var(--accent-2); }
.footer-bottom {
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 20px;
    padding-top: 30px;
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: rgba(255,255,255,0.45);
}
.footer-bottom a { color: inherit; }
.footer-bottom a:hover { color: white; }

/* ===== ANIMATIONS ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
    .nav-links { display: none; }
    .menu-toggle { display: block; }
    .service-hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .cta-banner { grid-template-columns: 1fr; padding: 40px 28px; }
    .footer-grid-main { grid-template-columns: 1fr 1fr; gap: 40px; }
    .hero { padding: 130px 0 70px; }
    .page-header { padding: 130px 0 60px; }
    .service-hero { padding: 130px 0 60px; }
}
@media (max-width: 600px) {
    .footer-grid-main { grid-template-columns: 1fr; }
    .card { padding: 26px 22px; }
    .process-step { padding: 26px 22px; }
    .cta-banner { padding: 36px 24px; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .btn { justify-content: center; }
}