:root {
    --green-900: #064e3b;
    --green-800: #065f46;
    --green-700: #047857;
    --green-600: #059669;
    --green-500: #10b981;
    --green-400: #34d399;
    --green-100: #d1fae5;
    --green-50: #ecfdf5;
    --gray-900: #111827;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --gray-50: #f9fafb;
    --white: #ffffff;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

.skip-link {
    position: absolute;
    top: -100%;
    left: 16px;
    background: var(--green-700);
    color: var(--white);
    padding: 8px 16px;
    border-radius: 0 0 4px 4px;
    font-size: 14px;
    font-weight: 600;
    z-index: 200;
    text-decoration: none;
    transition: top 0.2s;
}

.skip-link:focus {
    top: 0;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--white);
    color: var(--gray-800);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* ── Nav ── */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 0 48px;
    height: 72px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
    max-width: 100%;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    flex-shrink: 0;
}

.nav-logo img { height: 52px; width: auto; max-width: 100%; }

.nav-links { display: flex; gap: 32px; align-items: center; }

.nav-links a {
    color: var(--gray-600);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover { color: var(--green-700); }

/* Dropdown */
.nav-dropdown {
    position: relative;
}

.nav-dropdown > a {
    display: flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
}

.nav-dropdown > a::after {
    content: '';
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid var(--gray-500);
    transition: border-top-color 0.2s;
}

.nav-dropdown:hover > a::after {
    border-top-color: var(--green-700);
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: -12px;
    padding-top: 12px;
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
}

.nav-dropdown-menu ul {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 10px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
    padding: 8px 0;
    min-width: 200px;
    list-style: none;
}

.nav-dropdown-menu li a {
    display: block;
    padding: 10px 20px;
    font-size: 14px;
    color: var(--gray-600);
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
}

.nav-dropdown-menu li a:hover {
    background: var(--green-50);
    color: var(--green-800);
}

.nav-cta {
    background: var(--green-800);
    color: var(--white) !important;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600 !important;
    transition: background 0.2s !important;
}

.nav-cta:hover { background: var(--green-900) !important; }

/* ── Hero ── */
.hero {
    padding: 160px 48px 100px;
    background: linear-gradient(180deg, var(--green-50) 0%, var(--white) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -200px; right: -200px;
    width: 600px; height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(16,185,129,0.06) 0%, transparent 70%);
}

.hero-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.hero h1 {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--green-900);
    margin-bottom: 20px;
}

.hero h1 span { color: var(--green-600); }

.hero-sub {
    font-size: 18px;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 36px;
    max-width: 520px;
}

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.btn-primary {
    background: var(--green-800);
    color: var(--white);
    padding: 14px 32px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: background 0.2s;
    display: inline-block;
    border: none;
    cursor: pointer;
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.btn-primary:hover { background: var(--green-900); }

.btn-secondary {
    background: var(--white);
    color: var(--gray-700);
    padding: 14px 32px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    border: 1px solid var(--gray-300);
    transition: border-color 0.2s, color 0.2s;
    display: inline-block;
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.btn-secondary:hover {
    border-color: var(--green-500);
    color: var(--green-700);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-logo-large img {
    width: 320px;
    height: auto;
    opacity: 0.95;
    max-width: 100%;
}

/* ── Section Base ── */
section {
    padding: 100px 48px;
    max-width: 1100px;
    margin: 0 auto;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--green-700);
    margin-bottom: 12px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--gray-900);
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-desc {
    font-size: 17px;
    color: var(--gray-500);
    max-width: 560px;
    line-height: 1.7;
    margin-bottom: 56px;
}

/* ── Bullet list ── */
.bullet-list {
    list-style: none;
    padding: 0;
    max-width: 600px;
}

.bullet-list li {
    font-size: 16px;
    color: var(--gray-600);
    padding: 10px 0;
    padding-left: 28px;
    position: relative;
    line-height: 1.6;
}

.bullet-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 18px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--green-500);
}

.bullet-list li strong {
    color: var(--gray-900);
}

/* ── Pain points ── */
.pain-list {
    list-style: none;
    padding: 0;
    margin: 28px 0;
}

.pain-list li {
    font-size: 16px;
    color: var(--gray-600);
    padding: 10px 0 10px 32px;
    position: relative;
    line-height: 1.5;
}

.pain-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 17px;
    width: 10px;
    height: 2px;
    background: var(--gray-400);
}

/* ── Approach ── */
.approach-section {
    background: var(--gray-50);
    padding: 100px 48px;
}

.approach-inner {
    max-width: 1100px;
    margin: 0 auto;
}

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

.approach-grid.cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

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

.approach-item {
    text-align: center;
    padding: 32px 20px;
}

.approach-num {
    font-size: 48px;
    font-weight: 800;
    color: var(--green-100);
    line-height: 1;
    margin-bottom: 16px;
}

.approach-item h3 {
    font-size: 16px;
    font-weight: 650;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.approach-item p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ── Pricing ── */
.pricing-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    max-width: 700px;
}

.pricing-grid-3 {
    grid-template-columns: 1fr 1fr 1fr;
    max-width: 900px;
}

.pricing-card {
    padding: 36px;
    border: 1px solid var(--gray-200);
    border-radius: 16px;
    background: var(--white);
}

.pricing-card.highlight {
    border-color: var(--green-300);
    background: var(--green-50);
}

.pricing-label {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--green-700);
    margin-bottom: 8px;
}

.pricing-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.pricing-desc {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ── FAQ ── */
.faq-list {
    max-width: 700px;
}

.faq-item {
    border-bottom: 1px solid var(--gray-200);
    padding: 24px 0;
}

.faq-item:first-child {
    border-top: 1px solid var(--gray-200);
}

.faq-q {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.faq-a {
    font-size: 15px;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ── About ── */
.about-section {
    border-top: 1px solid var(--gray-200);
}

.about-text {
    max-width: 600px;
}

.about-text p {
    font-size: 16px;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 16px;
}

/* ── CTA ── */
.cta-section {
    text-align: center;
    padding: 100px 48px;
}

.cta-section h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.cta-section p {
    font-size: 17px;
    color: var(--gray-500);
    margin-bottom: 36px;
}

/* ── Service cards ── */
.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.service-card {
    padding: 36px;
    border: 1px solid var(--gray-200);
    border-radius: 16px;
    background: var(--white);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.service-card:hover {
    border-color: var(--green-300);
    box-shadow: 0 4px 20px rgba(16,185,129,0.08);
}

.service-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.service-card p {
    font-size: 15px;
    color: var(--gray-500);
    line-height: 1.6;
    margin-bottom: 16px;
}

.service-card a {
    font-size: 14px;
    font-weight: 600;
    color: var(--green-700);
    text-decoration: none;
    display: inline-block;
    padding: 8px 0;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}

.service-card a:hover {
    color: var(--green-900);
}

/* ── Differentials ── */
.diff-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 700px;
}

.diff-item {
    padding: 20px;
    border-left: 3px solid var(--green-400);
    background: var(--green-50);
    border-radius: 0 8px 8px 0;
}

.diff-item strong {
    display: block;
    font-size: 15px;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.diff-item span {
    font-size: 14px;
    color: var(--gray-600);
}

/* ── Contact form ── */
.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: start;
}

.contact-form {
    max-width: 500px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    font-size: 15px;
    font-family: 'Inter', sans-serif;
    color: var(--gray-800);
    transition: border-color 0.2s;
    background: var(--white);
    min-height: 48px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--green-500);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-info {
    padding: 32px;
    background: var(--gray-50);
    border-radius: 16px;
}

.contact-info-item {
    margin-bottom: 24px;
}

.contact-info-item:last-child {
    margin-bottom: 0;
}

.contact-info-item h4 {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--gray-500);
    margin-bottom: 4px;
}

.contact-info-item p,
.contact-info-item a {
    font-size: 15px;
    color: var(--gray-800);
    text-decoration: none;
    line-height: 1.5;
    min-height: 44px;
    display: flex;
    align-items: center;
}

.contact-info-item a:hover {
    color: var(--green-700);
}

/* ── Stack list ── */
.stack-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
}

.stack-tag {
    display: inline-block;
    padding: 6px 14px;
    background: var(--gray-100);
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-700);
}

/* ── Highlight text ── */
.highlight-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--green-800);
    margin-top: 28px;
}

/* ── Results grid ── */
.results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    max-width: 500px;
}

.result-item {
    padding: 16px 20px;
    background: var(--green-50);
    border-radius: 10px;
    font-size: 15px;
    font-weight: 500;
    color: var(--green-800);
}

/* ── Footer ── */
footer {
    border-top: 1px solid var(--gray-200);
    padding: 48px;
    background: var(--white);
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 40px;
}

.footer-col h4 {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--gray-500);
    margin-bottom: 16px;
}

.footer-col ul {
    list-style: none;
    padding: 0;
}

.footer-col li {
    margin-bottom: 4px;
}

.footer-col a {
    color: var(--gray-600);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
    padding: 10px 12px 10px 0;
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
}

.footer-col a:hover {
    color: var(--green-700);
}

.footer-bottom {
    max-width: 1100px;
    margin: 0 auto;
    padding-top: 24px;
    margin-top: 32px;
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p { font-size: 13px; color: var(--gray-400); }

.footer-bottom a {
    color: var(--gray-500);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.2s;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}

.footer-bottom a:hover { color: var(--green-700); }

/* ── Mobile hamburger ── */
.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
    min-width: 44px;
    min-height: 44px;
    justify-content: center;
    align-items: center;
}

.nav-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: transform 0.2s, opacity 0.2s;
}

/* ── Responsive ── */
@media (max-width: 900px) {
    .hero-inner { grid-template-columns: 1fr; text-align: center; }
    .hero-sub { margin: 0 auto 36px; }
    .hero-actions { justify-content: center; }
    .hero-visual { display: none; }
    .approach-grid { grid-template-columns: 1fr; }
    .approach-grid.cols-4 { grid-template-columns: 1fr 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: 1fr; }
    .diff-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr 1fr; }
    .results-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    nav { padding: 0 16px; }
    .nav-links { display: none; }
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--white);
        border-bottom: 1px solid var(--gray-200);
        padding: 16px 20px;
        gap: 0;
        box-shadow: 0 8px 30px rgba(0,0,0,0.08);
        max-height: calc(100vh - 72px);
        overflow-y: auto;
    }
    .nav-links.active > a,
    .nav-links.active > .nav-dropdown > a {
        padding: 12px 0;
        min-height: 44px;
        display: flex;
        align-items: center;
        font-size: 16px;
    }
    .nav-links.active .nav-cta {
        text-align: center;
        justify-content: center;
        margin-top: 8px;
    }
    .nav-links.active .nav-dropdown-menu {
        position: static;
        padding-top: 0;
        opacity: 1;
        visibility: visible;
    }
    .nav-links.active .nav-dropdown-menu ul {
        border: none;
        box-shadow: none;
        padding: 4px 0 0 16px;
    }
    .nav-links.active .nav-dropdown-menu li a {
        padding: 10px 16px;
        min-height: 44px;
        display: flex;
        align-items: center;
        font-size: 15px;
    }
    .nav-hamburger { display: flex; }
    section, .approach-section, .cta-section { padding: 60px 20px; }
    .hero { padding: 120px 20px 60px; }
    .hero h1 { font-size: 32px; }
    .hero-sub { font-size: 16px; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .btn-primary,
    .hero-actions .btn-secondary { width: 100%; text-align: center; justify-content: center; }
    .section-title { font-size: 28px; }
    .section-desc { font-size: 15px; margin-bottom: 36px; }
    .approach-grid,
    .approach-grid.cols-4 { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr !important; }
    .services-grid { grid-template-columns: 1fr; }
    .cta-section h2 { font-size: 28px; }
    footer { padding: 32px 20px; }
    .footer-inner { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    .contact-grid { gap: 32px; }
    .contact-form { max-width: 100%; }
    .form-group input,
    .form-group select { font-size: 16px; }
    .highlight-text { font-size: 18px; }
    .approach-num { font-size: 36px; }
    .pricing-card { padding: 24px; }
    .pricing-value { font-size: 24px; }
    .service-card { padding: 24px; }
    .service-card h3 { font-size: 17px; }
    .results-grid { grid-template-columns: 1fr; }
}