/* =========================================
   Atlas Consulting — Professional Corporate
   ========================================= */

:root {
    --primary: #1a3a5c;
    --primary-light: #2c6fbb;
    --accent: #4a9eff;
    --accent-light: #e8f0fe;
    --bg: #ffffff;
    --bg-alt: #f5f7fa;
    --bg-dark: #0f2538;
    --text: #2d3748;
    --text-light: #6b7a8d;
    --text-white: #ffffff;
    --border: #e2e8f0;
    --shadow: 0 4px 24px rgba(26, 58, 92, 0.08);
    --shadow-hover: 0 8px 40px rgba(26, 58, 92, 0.14);
    --radius: 12px;
    --radius-sm: 8px;
    --font-cn: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-en: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --accent-gradient: linear-gradient(135deg, #4a9eff, #2c6fbb);
    --accent-gradient-alt: linear-gradient(135deg, #2c6fbb, #1a3a5c);
    --accent-gradient-pro: linear-gradient(135deg, #5b8def, #3d5a99);
    --accent-gradient-m365: linear-gradient(135deg, #0078d4, #50e6ff);
    --accent-gradient-hardware: linear-gradient(135deg, #2c6fbb, #1a3a5c);
    --accent-gradient-ai: linear-gradient(135deg, #7c3aed, #a855f7);
}

/* ---- Reset ---- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-cn);
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

/* ---- Screen Reader Only ---- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ---- Skip Link (Accessibility) ---- */
.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    z-index: 10000;
    padding: 12px 24px;
    background: var(--primary);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 0 0 8px 0;
    transition: top 0.2s ease;
}
.skip-link:focus {
    top: 0;
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

/* ---- Focus Visible (Accessibility) ---- */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}
.btn:focus-visible,
.nav-link:focus-visible,
.lang-btn:focus-visible,
.nav-toggle:focus-visible,
.partner-logo:focus-visible,
.service-card-link:focus-visible .service-card {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}
.contact-form input:focus-visible,
.contact-form select:focus-visible,
.contact-form textarea:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 0;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.2);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}
.section-tag {
    display: inline-block;
    background: var(--accent-light);
    color: var(--primary-light);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 6px 18px;
    border-radius: 20px;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 16px;
    font-family: var(--font-en);
}
.section-header h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 16px;
}
.section-desc {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

section { padding: 100px 0; }

/* ---- NAVBAR ---- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: var(--transition);
    padding: 16px 0;
}
.navbar.scrolled {
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 8px rgba(0,0,0,0.06);
    padding: 10px 0;
}
.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-logo img {
    height: 40px;
    transition: var(--transition);
}
.navbar.scrolled .logo-white { display: none; }
.navbar.scrolled .logo-blue { display: block; }
.navbar:not(.scrolled) .logo-white { display: block; }
.navbar:not(.scrolled) .logo-blue { display: none; }

.nav-menu {
    display: flex;
    align-items: center;
    gap: 36px;
}
.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-white);
    transition: var(--transition);
    position: relative;
    padding: 4px 0;
}
.navbar.scrolled .nav-link { color: var(--text); }
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}
.nav-link:hover::after { width: 100%; }
.nav-link:hover { transform: scale(1.05); }
.nav-cta {
    background: var(--accent);
    color: white !important;
    padding: 10px 24px !important;
    border-radius: 6px;
    font-weight: 600;
    transition: var(--transition);
}
.nav-cta::after { display: none; }
.nav-cta:hover { background: var(--primary-light); transform: translateY(-1px) !important; }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.nav-toggle span {
    display: block;
    width: 26px;
    height: 2.5px;
    background: var(--text-white);
    border-radius: 2px;
    transition: var(--transition);
}
.navbar.scrolled .nav-toggle span { background: var(--text); }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile nav overlay */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 997;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}
.nav-overlay.open {
    opacity: 1;
    visibility: visible;
}

/* ---- Language Switcher ---- */
.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}
.lang-switcher {
    display: flex;
    gap: 2px;
    background: rgba(255,255,255,0.1);
    border-radius: 6px;
    padding: 3px;
}
.navbar.scrolled .lang-switcher {
    background: var(--accent-light);
}
.lang-btn {
    font-size: 0.78rem;
    font-weight: 600;
    padding: 4px 8px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    background: transparent;
    color: rgba(255,255,255,0.6);
    font-family: var(--font-en);
    transition: var(--transition);
    letter-spacing: 0.5px;
}
.navbar.scrolled .lang-btn {
    color: var(--text-light);
}
.lang-btn:hover {
    color: var(--text-white);
}
.navbar.scrolled .lang-btn:hover {
    color: var(--primary);
}
.lang-btn.active {
    background: rgba(255,255,255,0.2);
    color: var(--text-white);
}
.navbar.scrolled .lang-btn.active {
    background: white;
    color: var(--primary);
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

/* ---- HERO (full-bleed poster style) ---- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, var(--primary) 0%, #0f2b47 50%, #1a4a6e 100%);
    overflow: hidden;
    padding-top: 80px;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(74, 158, 255, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(74, 158, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(44, 111, 187, 0.15) 0%, transparent 50%);
}
.hero-content {
    position: relative;
    z-index: 2;
    max-width: 850px;
    margin: 0 auto;
    text-align: center;
}
.hero-badge {
    display: inline-block;
    background: rgba(74, 158, 255, 0.15);
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 6px 18px;
    border-radius: 20px;
    margin-bottom: 24px;
    font-family: var(--font-en);
    border: 1px solid rgba(74, 158, 255, 0.25);
    animation: fadeInUp 0.8s ease;
}
.hero-text h1 {
    font-size: 3.2rem;
    font-weight: 800;
    color: var(--text-white);
    line-height: 1.25;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease 0.1s both;
}
.hero-text .highlight {
    background: linear-gradient(135deg, var(--accent), #7bb8ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-text p {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.75);
    max-width: 600px;
    margin: 0 auto 36px;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.2s both;
}
.hero-tagline {
    font-family: var(--font-en);
    font-size: 1.05rem !important;
    color: var(--accent) !important;
    font-weight: 500;
    letter-spacing: 0.5px;
    margin-bottom: 8px !important;
}
.hero-btns {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    font-family: var(--font-cn);
    cursor: pointer;
    border: none;
    transition: var(--transition);
}
/* English text word-break support */
body[style*="font-family: var(--font-en)"] .service-card p,
body[style*="font-family: var(--font-en)"] .case-card p,
body[style*="font-family: var(--font-en)"] .sc-list li,
body[style*="font-family: var(--font-en)"] .about-text p,
body[style*="font-family: var(--font-en)"] .ci-card p,
body[style*="font-family: var(--font-en)"] .section-desc,
body[style*="font-family: var(--font-en)"] .footer-brand p,
body[style*="font-family: var(--font-en)"] .case-type {
    word-break: break-word;
    overflow-wrap: break-word;
}
.btn-primary {
    background: var(--accent);
    color: white;
}
.btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(74,158,255,0.3); }
.btn-primary:active { transform: scale(0.98); }
.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid rgba(255,255,255,0.3);
}
.btn-outline:hover { border-color: var(--accent); background: rgba(74,158,255,0.1); }
.btn-outline:active { transform: scale(0.98); }
.btn-block { width: 100%; justify-content: center; }

/* Hero stat card removed — stats moved to about section */

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    line-height: 0;
}
.hero-wave svg { width: 100%; height: auto; display: block; }

/* ---- ABOUT ---- */
.about { background: var(--bg-alt); }
.about-content {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: 60px;
    align-items: start;
}
.about-text p {
    margin-bottom: 16px;
    color: var(--text);
    line-height: 1.8;
    font-size: 1.05rem;
}
.about-text p strong { color: var(--primary); }
.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 24px;
}
.about-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--text);
}
.about-mission {
    margin-top: 28px;
    padding: 20px 24px;
    background: linear-gradient(135deg, var(--primary), #0f2b47);
    border-radius: var(--radius);
    border-left: 4px solid var(--accent);
}
.mission-text {
    font-size: 1rem !important;
    color: rgba(255,255,255,0.9) !important;
    font-weight: 500;
    line-height: 1.6 !important;
    margin-bottom: 0 !important;
    font-style: italic;
}
.af-icon {
    width: 22px;
    height: 22px;
    background: var(--accent-light);
    color: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}
.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.stat-card {
    background: white;
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.stat-num {
    display: block;
    font-family: var(--font-en);
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-light);
    line-height: 1;
    margin-bottom: 8px;
}
.stat-desc {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* ---- SERVICES (Bento Grid) ---- */
.services { background: var(--bg); }
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.service-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}
/* AI Innovation — full-width hero card at top */
.service-ai-wide { grid-column: 1 / -1; }
.service-card-ai {
    background: linear-gradient(135deg, var(--primary) 0%, #1a2a5c 50%, #2d1f6e 100%) !important;
    border-color: rgba(124, 58, 237, 0.3) !important;
    position: relative;
    overflow: hidden;
    padding: 48px 40px;
}
.service-card-ai::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-gradient-ai), #a855f7, var(--accent));
}
.service-card-ai h3 { color: #fff !important; font-size: 1.5rem; }
.service-card-ai p { color: rgba(255,255,255,0.75) !important; }
.service-card-ai .sc-list li { color: rgba(255,255,255,0.7) !important; }
.service-card-ai .sc-list li::before { color: #a855f7 !important; }
.service-card-ai .sc-icon { width: 64px; height: 64px; border-radius: 16px; }
.service-card-ai .sc-icon svg { width: 36px; height: 36px; }
.service-card-link:focus-visible {
    outline: none;
}
.service-card-link:focus-visible .service-card {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}
.service-card {
    background: var(--bg-alt);
    border-radius: var(--radius);
    padding: 40px 32px;
    border: 1px solid var(--border);
    transition: var(--transition);
    height: 100%;
}
.service-card:hover { 
    transform: translateY(-6px); 
    box-shadow: var(--shadow-hover); 
    border-color: transparent; 
}
.sc-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: white;
}
.sc-icon svg { width: 32px; height: 32px; }
.sc-icon-cloud { background: var(--accent-gradient); }
.sc-icon-infra { background: var(--accent-gradient-alt); }
.sc-icon-pro { background: var(--accent-gradient-pro); }
.sc-icon-m365 { background: var(--accent-gradient-m365); }
.sc-icon-hardware { background: var(--accent-gradient-hardware); }
.sc-icon-ai { background: var(--accent-gradient-ai); }
.service-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}
.service-card p { color: var(--text-light); font-size: 0.95rem; margin-bottom: 16px; line-height: 1.7; }
.sc-list li {
    font-size: 0.9rem;
    color: var(--text);
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
}
.sc-list li::before {
    content: '›';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
    font-size: 1.2rem;
}

/* Bento layout: Cloud (1st) spans 2 cols */
.service-card-link:nth-child(1) {
    grid-column: span 2;
}
.service-card-link:nth-child(1) .service-card {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto 1fr;
    column-gap: 28px;
}
.service-card-link:nth-child(1) .sc-icon {
    grid-row: 1 / 3;
    width: 72px;
    height: 72px;
    border-radius: 18px;
}
.service-card-link:nth-child(1) .sc-icon svg { width: 42px; height: 42px; }
.service-card-link:nth-child(1) .service-card h3 { grid-column: 2; grid-row: 1; align-self: end; }
.service-card-link:nth-child(1) .service-card > p { grid-column: 2; grid-row: 2; margin-bottom: 0; }
.service-card-link:nth-child(1) .sc-list { grid-column: 1 / -1; }

/* AI Innovation (last) spans full width */
.service-card-link:nth-child(7) {
    grid-column: 1 / -1;
}
.service-card-link:nth-child(7) .service-card {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 28px;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-alt) 0%, #f0edff 100%);
    border-color: #e0d6ff;
    position: relative;
    overflow: hidden;
}
.service-card-link:nth-child(7) .service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent-gradient-ai);
}
.service-card-link:nth-child(7) .sc-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
}
.service-card-link:nth-child(7) .sc-icon svg { width: 38px; height: 38px; }
.service-card-link:nth-child(7) .service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 8px;
}
.service-card-link:nth-child(7) .service-card > p { margin-bottom: 0; }
.service-card-link:nth-child(7) .sc-list { display: grid; grid-template-columns: 1fr 1fr; }
.service-card-link:nth-child(7) .service-card:hover {
    border-color: #7c3aed;
}

/* ---- SOLUTIONS ---- */
.solutions { background: var(--bg-alt); }
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.solution-card {
    background: white;
    border-radius: var(--radius);
    padding: 36px 28px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.solution-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.sol-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: var(--accent-light);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-light);
}
.sol-icon svg { width: 36px; height: 36px; }
.solution-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}
.solution-card p {
    font-size: 0.92rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* ---- CASES (Reference) ---- */
.cases { background: var(--bg); }
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.case-card {
    background: var(--bg-alt);
    border-radius: var(--radius);
    padding: 32px 24px;
    border: 1px solid var(--border);
    transition: var(--transition);
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: transparent; }
.case-icon { font-size: 2.2rem; margin-bottom: 12px; }
.case-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 6px;
}
.case-type {
    font-size: 0.8rem;
    color: var(--accent);
    font-weight: 600;
    font-family: var(--font-en);
    margin-bottom: 12px;
    letter-spacing: 0.3px;
}
.case-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* ---- PARTNERS ---- */
.partners { background: var(--bg); }
.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 24px;
    align-items: stretch;
}
.partner-logo {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 24px 12px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100px;
}
.partner-logo:hover { border-color: var(--accent); box-shadow: var(--shadow); transform: translateY(-3px); }
.pl-img {
    width: 100%;
    max-width: 110px;
    height: auto;
    margin: 0 auto;
    opacity: 0.7;
    transition: var(--transition);
    border-radius: 4px;
}
.partner-logo:hover .pl-img { opacity: 1; }
.pl-placeholder {
    font-family: var(--font-en);
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-light);
    letter-spacing: 0.5px;
    line-height: 1.4;
}
.pl-badge {
    display: block;
    font-size: 0.65rem;
    color: var(--accent);
    font-weight: 600;
    margin-top: 8px;
    letter-spacing: 0.3px;
    font-family: var(--font-en);
}
.partner-logo.featured {
    border-color: var(--accent);
    background: var(--accent-light);
    box-shadow: 0 0 0 2px rgba(74, 158, 255, 0.15);
}
.partner-logo.featured .pl-placeholder { color: var(--primary-light); }
.partner-logo.featured:hover {
    box-shadow: 0 0 0 2px rgba(74, 158, 255, 0.25), var(--shadow-hover);
}

/* ---- CONTACT ---- */
.contact { background: var(--bg-alt); }
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
}
.contact-info { display: flex; flex-direction: column; gap: 24px; }
.ci-card {
    background: white;
    border-radius: var(--radius);
    padding: 28px 24px;
    box-shadow: var(--shadow);
}
.ci-card h4 {
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: 12px;
    font-weight: 700;
}
.ci-card p {
    font-size: 0.95rem;
    color: var(--text);
    margin-bottom: 6px;
}
.ci-card p strong { color: var(--primary); font-weight: 600; }
.ci-label {
    color: var(--text-light);
    font-size: 0.85rem;
    margin-right: 8px;
}
.contact-form {
    background: white;
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.form-group {
    margin-bottom: 16px;
}
.form-group label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
}
.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: var(--font-cn);
    background: var(--bg-alt);
    transition: var(--transition);
    margin-bottom: 0;
    color: var(--text);
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(74,158,255,0.15);
    background: white;
}
.contact-form textarea { resize: vertical; min-height: 100px; }

/* Form error states */
.form-error {
    color: #dc2626;
    font-size: 0.82rem;
    margin-top: 4px;
    display: none;
}
.form-error.visible {
    display: block;
}
input.error,
select.error,
textarea.error {
    border-color: #dc2626 !important;
    background: #fef2f2 !important;
}

/* Form submit loading */
.btn.loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}
.btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    left: 50%;
    top: 50%;
    margin: -10px 0 0 -10px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- FOOTER ---- */
.footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,0.7);
    padding: 60px 0 0;
    position: relative;
}
.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--primary-light), var(--accent));
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo { height: 36px; margin-bottom: 16px; }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; }
.footer-brand-meta {
    margin-top: 12px;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
}
.footer-links h4,
.footer-contact h4 {
    color: white;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
}
.footer-links ul li { margin-bottom: 10px; }
.footer-links ul li a {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}
.footer-links ul li a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact p {
    font-size: 0.9rem;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-bottom {
    padding: 20px 0;
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.4);
}

/* ---- Animations ---- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* Fade-in scroll animation classes (set via JS) */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Floating animation for stat cards */
.floating-stat {
    animation: float 3s ease-in-out infinite;
}
.floating-stat:nth-child(2) { animation-delay: 0.5s; }
.floating-stat:nth-child(3) { animation-delay: 1s; }
.floating-stat:nth-child(4) { animation-delay: 1.5s; }

/* ---- prefers-reduced-motion ---- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .stat-card:hover,
    .service-card:hover,
    .case-card:hover,
    .solution-card:hover,
    .partner-logo:hover,
    .btn-primary:hover,
    .btn-outline:hover {
        transform: none !important;
    }
}

/* ---- RESPONSIVE ---- */

/* ===== SERVICE DETAIL PAGES ===== */
.service-detail .sd-hero {
    min-height: 50vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, var(--primary) 0%, #0f2b47 50%, #1a4a6e 100%);
    overflow: hidden;
    padding-top: 100px;
}
.sd-hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}
.sd-hero-breadcrumb {
    font-family: var(--font-en);
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
    margin-bottom: 16px;
}
.sd-hero-breadcrumb a { color: var(--accent); }
.sd-hero-breadcrumb a:hover { text-decoration: underline; }
.sd-hero-badge {
    display: inline-block;
    background: rgba(74,158,255,0.15);
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 6px 18px;
    border-radius: 20px;
    margin-bottom: 20px;
    font-family: var(--font-en);
    border: 1px solid rgba(74,158,255,0.25);
}
.sd-hero h1 {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: 16px;
    line-height: 1.2;
}
.sd-hero p {
    font-size: 1.15rem;
    color: rgba(255,255,255,0.75);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.7;
}

.sd-section { padding: 80px 0; }
.sd-section-alt { background: var(--bg-alt); }
.sd-section h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 40px;
    text-align: center;
}
.sd-overview {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--text);
    text-align: center;
}

.sd-cap-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}
.sd-cap-item {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
    transition: var(--transition);
}
.sd-cap-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: var(--accent); }
.sd-cap-icon {
    width: 48px; height: 48px;
    margin: 0 auto 16px;
    background: var(--accent-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-light);
    font-size: 1.3rem;
    font-weight: 700;
}
.sd-cap-item h4 { font-size: 1rem; color: var(--primary); font-weight: 600; }

.sd-projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}
.sd-project-card {
    background: white;
    border-radius: var(--radius);
    padding: 32px 28px;
    border: 1px solid var(--border);
    transition: var(--transition);
}
.sd-project-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.sd-project-icon { font-size: 2rem; margin-bottom: 12px; }
.sd-project-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}
.sd-project-card p {
    font-size: 0.92rem;
    color: var(--text-light);
    line-height: 1.7;
}

.sd-cta {
    text-align: center;
    padding: 60px 0;
    background: linear-gradient(135deg, var(--primary), #0f2b47);
    color: white;
    position: relative;
    overflow: hidden;
}
.sd-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(74,158,255,0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 20%, rgba(74,158,255,0.05) 0%, transparent 50%);
}
.sd-cta .container {
    position: relative;
    z-index: 1;
}
.sd-cta h2 { color: white !important; margin-bottom: 16px !important; }
.sd-cta p { color: rgba(255,255,255,0.7); margin-bottom: 28px; font-size: 1.05rem; max-width: 500px; margin-left: auto; margin-right: auto; }
.sd-cta .btn { font-size: 1.05rem; }
.sd-cta .btn:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(74,158,255,0.35); }

/* ---- VO Product Section (AI detail page) ---- */
.sd-section-vo {
    background: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 100%);
    position: relative;
    overflow: hidden;
}

.sd-vo-header { text-align: center; margin-bottom: 48px; }

.sd-vo-badge {
    display: inline-block;
    background: var(--accent-gradient-ai);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 20px;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 16px;
    font-family: var(--font-en);
}

.sd-vo-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.sd-vo-slogan {
    font-size: 1.3rem;
    font-weight: 600;
    background: var(--accent-gradient-ai);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    font-family: var(--font-en);
}

.sd-vo-subtitle {
    font-size: 1.05rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

.sd-vo-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 48px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.sd-vo-card {
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(8px);
    border-radius: var(--radius);
    padding: 28px;
    border: 1px solid rgba(124,58,237,0.1);
    transition: var(--transition);
}

.sd-vo-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(124,58,237,0.25);
}

.sd-vo-card-icon { font-size: 2rem; margin-bottom: 12px; }

.sd-vo-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
}

.sd-vo-card p {
    font-size: 0.92rem;
    color: var(--text-light);
    line-height: 1.6;
}

.sd-vo-ctas {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* Card actions row inside AI card on homepage */
.ai-card-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.ai-card-actions .ai-card-link {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 8px;
    background: rgba(255,255,255,0.12);
    color: rgba(255,255,255,0.9);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    text-decoration: none;
}

.ai-card-actions .ai-card-link:hover {
    background: rgba(255,255,255,0.2);
    color: #fff;
    transform: translateY(-1px);
}

.ai-card-actions .ai-demo-btn {
    display: inline-block;
    padding: 8px 20px;
    border: 1px solid rgba(255,255,255,0.5);
    border-radius: 8px;
    color: rgba(255,255,255,0.9);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    text-decoration: none;
}

.ai-card-actions .ai-demo-btn:hover {
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.8);
    color: #fff;
    transform: translateY(-1px);
}

/* VO bullet link in AI card list */
.service-card-ai .sc-list li a {
    color: #b794f4;
    text-decoration: none;
    border-bottom: 1px solid rgba(183, 148, 244, 0.3);
    transition: var(--transition);
}

.service-card-ai .sc-list li a:hover {
    color: #d8b4fe;
    border-bottom-color: #d8b4fe;
}

@media (max-width: 768px) {
    .sd-vo-features { grid-template-columns: 1fr; }
    .sd-vo-ctas { flex-direction: column; align-items: center; }
}

@media (max-width: 768px) {
    .sd-hero h1 { font-size: 2rem; }
    .sd-hero { min-height: auto; padding: 120px 0 60px; }
    .sd-section { padding: 50px 0; }
    .sd-section h2 { font-size: 1.6rem; margin-bottom: 28px; }
    .sd-cap-grid { grid-template-columns: repeat(2, 1fr); }
    .sd-projects-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .sd-hero h1 { font-size: 1.6rem; }
    .sd-hero p { font-size: 0.95rem; }
    .sd-cap-grid { grid-template-columns: 1fr; }
    .sd-section h2 { font-size: 1.3rem; }
    .sd-project-card { padding: 24px 20px; }
    .sd-overview { font-size: 0.95rem; }
}

@media (max-width: 1024px) {
    .hero-content { max-width: 100%; }
    .hero-text h1 { font-size: 2.5rem; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .service-card-link:nth-child(1) { grid-column: span 2; }
    .service-card-link:nth-child(7) { grid-column: 1 / -1; }
    .cases-grid { grid-template-columns: repeat(2, 1fr); }
    .solutions-grid { grid-template-columns: repeat(2, 1fr); }
    .partners-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .nav-menu { gap: 28px; }
}
@media (max-width: 768px) {
    section { padding: 60px 0; }
    .section-header { margin-bottom: 40px; }
    .section-header h2 { font-size: 1.8rem; }
    .section-desc { font-size: 1rem; }
    .hero-text h1 { font-size: 2.2rem; }
    .hero { min-height: auto; padding: 120px 0 80px; }
    .hero-text p { max-width: 100%; }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--primary);
        flex-direction: column;
        justify-content: flex-start;
        padding-top: 40px;
        gap: 28px;
        transform: translateX(100%);
        transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease;
        opacity: 0;
        z-index: 998;
    }
    .nav-menu.open { transform: translateX(0); opacity: 1; }
    .nav-toggle { display: flex; z-index: 999; position: relative; }
    .nav-link { font-size: 1.2rem; color: white !important; }
    .nav-cta { background: var(--accent); }
    
    .about-content { grid-template-columns: 1fr; gap: 40px; }
    .about-features { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: 1fr 1fr; }
    
    .services-grid { grid-template-columns: 1fr; }
    .service-card-link:nth-child(1) { grid-column: 1; }
    .service-card-link:nth-child(1) .service-card {
        grid-template-columns: 1fr;
    }
    .service-card-link:nth-child(1) .sc-icon {
        grid-row: auto;
        width: 56px;
        height: 56px;
        border-radius: 14px;
    }
    .service-card-link:nth-child(1) .sc-icon svg { width: 32px; height: 32px; }
    .service-card-link:nth-child(1) .service-card h3 { grid-column: 1; grid-row: auto; align-self: auto; }
    .service-card-link:nth-child(1) .service-card > p { grid-column: 1; grid-row: auto; }
    .service-card-link:nth-child(1) .sc-list { grid-column: 1; }
    
    .service-card-link:nth-child(7) { grid-column: 1; }
    .service-card-link:nth-child(7) .service-card {
        grid-template-columns: 1fr;
    }
    .service-card-link:nth-child(7) .sc-list { grid-template-columns: 1fr; }
    .service-card-link:nth-child(7) .sc-icon {
        width: 56px;
        height: 56px;
        border-radius: 14px;
    }
    .service-card-link:nth-child(7) .sc-icon svg { width: 32px; height: 32px; }
    
    .service-card { padding: 32px 24px; }
    .cases-grid { grid-template-columns: 1fr; }
    .solutions-grid { grid-template-columns: 1fr; }
    .partners-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; }
    .contact-form { padding: 28px 20px; }
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer { padding: 40px 0 0; }
}
@media (max-width: 480px) {
    body { font-size: 15px; }
    .container { padding: 0 16px; }
    section { padding: 40px 0; }
    .section-header { margin-bottom: 32px; }
    .section-header h2 { font-size: 1.5rem; }
    .section-desc { font-size: 0.92rem; }
    .hero { padding: 100px 0 60px; }
    .hero-text h1 { font-size: 1.6rem; }
    .hero-text p { font-size: 0.95rem; }
    .hero-badge { font-size: 0.75rem; padding: 4px 14px; }
    .hero-btns { flex-direction: column; align-items: stretch; }
    .hero-btns .btn { justify-content: center; }
    .about-stats { grid-template-columns: 1fr 1fr; gap: 12px; }
    .stat-card { padding: 20px 12px; }
    .stat-num { font-size: 1.6rem; }
    .about-text p { font-size: 0.95rem; }
    .about-mission { padding: 16px 18px; }
    .about-feature { font-size: 0.88rem; }
    .service-card { padding: 28px 20px; }
    .service-card h3 { font-size: 1.1rem; }
    .sc-icon { width: 48px; height: 48px; margin-bottom: 16px; }
    .sc-icon svg { width: 28px; height: 28px; }
    .case-card { padding: 24px 18px; }
    .case-card h3 { font-size: 1rem; }
    .partners-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .partner-logo { padding: 18px 10px; min-height: 80px; }
    .pl-placeholder { font-size: 0.95rem; }
    .ci-card { padding: 20px 16px; }
    .ci-card h4 { font-size: 1rem; }
    .ci-card p { font-size: 0.88rem; }
    .contact-form { padding: 24px 16px; }
    .contact-form input,
    .contact-form select,
    .contact-form textarea { padding: 12px 14px; font-size: 0.95rem; }
    .nav-logo img { height: 32px; }
    .lang-btn { font-size: 0.7rem; padding: 3px 6px; }
    .footer-grid { gap: 28px; }
    .footer { padding: 32px 0 0; }
    .footer-brand p { font-size: 0.82rem; }
    .footer-links h4, .footer-contact h4 { font-size: 0.9rem; }
    .footer-bottom p { font-size: 0.75rem; line-height: 1.6; }
}
@media (max-width: 380px) {
    .hero-text h1 { font-size: 1.35rem; }
    .about-stats { grid-template-columns: 1fr; }
    .lang-switcher { gap: 1px; }
    .lang-btn { font-size: 0.65rem; padding: 2px 5px; }
    .section-header h2 { font-size: 1.3rem; }
}