:root {
    --ia-bg: #050608;
    --ia-surface: #0c0d11;
    --ia-surface-alt: #111318;
    --ia-border: rgba(255, 255, 255, 0.06);
    --ia-border-hover: rgba(255, 255, 255, 0.12);
    --ia-text: #e8eaf0;
    --ia-muted: #6b7280;
    --ia-accent-start: #7c3aed;
    --ia-accent-end: #06b6d4;
    --ia-alert: #ef4444;
}

body {
    background: var(--ia-bg);
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -2;
    pointer-events: none;
    background-image:
        linear-gradient(to right, rgba(232, 234, 240, 0.015) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(232, 234, 240, 0.015) 1px, transparent 1px);
    background-size: 48px 48px;
}

.ia-page {
    font-family: 'Inter', sans-serif;
    color: var(--ia-text);
    background: var(--ia-bg);
}

.ia-page h1,
.ia-page h2,
.ia-page h3 {
    font-family: 'Space Grotesk', sans-serif;
    letter-spacing: -0.02em;
}

.ia-container {
    max-width: 1200px;
    padding-left: 24px;
    padding-right: 24px;
}

.ia-page section {
    position: relative;
    padding: 96px 0;
}

.ia-kicker {
    display: inline-flex;
    margin-bottom: 16px;
    padding: 6px 12px;
    border: 1px solid var(--ia-border);
    border-radius: 999px;
    color: var(--ia-muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.ia-section-head {
    margin-bottom: 36px;
}

.ia-section-head h2 {
    font-size: clamp(1.8rem, 3.4vw, 3rem);
    line-height: 1.1;
}

.ia-hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 140px;
    overflow: hidden;
}

.ia-hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    align-items: end;
}

.ia-hero-title {
    font-size: clamp(1.9rem, 4.4vw, 3.7rem);
    line-height: 1.06;
    margin-bottom: 22px;
}

.ia-hero-line {
    display: block;
    opacity: 0;
    transform: translateY(20px);
    animation: iaHeroLineIn 600ms ease-out forwards;
}

.ia-hero-line:nth-child(2) {
    animation-delay: 120ms;
}

.ia-hero-line:nth-child(3) {
    animation-delay: 240ms;
}

@media (min-width: 1024px) {
    .ia-hero-line:nth-child(1) {
        background: linear-gradient(120deg, #8B5CF6 12%, #22D3EE 92%);
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
        -webkit-text-fill-color: transparent;
    }

    .ia-hero-line:nth-child(2) {
        color: #f87171;
        text-shadow: 0 0 18px rgba(248, 113, 113, 0.22);
    }

    .ia-hero-line:nth-child(3) {
        color: #34d399;
        text-shadow: 0 0 18px rgba(52, 211, 153, 0.22);
    }
}

.ia-hero-subtitle {
    max-width: 66ch;
    color: var(--ia-muted);
    margin-bottom: 28px;
}

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

.ia-btn-primary {
    border: 1px solid transparent;
}

.ia-btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--ia-border);
    border-radius: 12px;
    padding: 14px 22px;
    color: var(--ia-text);
    text-decoration: none;
    transition: border-color 300ms ease, box-shadow 300ms ease, transform 300ms ease;
    background: linear-gradient(180deg, rgba(12, 13, 17, 0.8), rgba(17, 19, 24, 0.85));
}

.ia-btn-secondary:hover {
    border-color: var(--ia-border-hover);
    transform: translateY(-2px);
    box-shadow: 0 0 24px rgba(124, 58, 237, 0.12);
}

.ia-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
    z-index: -1;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.45) 0%, rgba(6, 182, 212, 0.34) 45%, transparent 72%);
    animation: iaOrbPulse 10s ease-in-out infinite;
}

.ia-orb-primary {
    width: 420px;
    height: 420px;
    top: 8%;
    right: -120px;
}

.ia-orb-secondary {
    width: 290px;
    height: 290px;
    left: -80px;
    bottom: 4%;
    animation-delay: 1.8s;
}

.ia-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.ia-stat-card {
    border: 1px solid var(--ia-border);
    border-radius: 16px;
    background: linear-gradient(180deg, var(--ia-surface), var(--ia-surface-alt));
    padding: 18px;
    min-height: 120px;
    transition: border-color 300ms ease, box-shadow 300ms ease;
}

.ia-stat-card:hover {
    border-color: var(--ia-border-hover);
    box-shadow: inset 0 0 0 1px rgba(124, 58, 237, 0.3), 0 0 24px rgba(124, 58, 237, 0.12);
}

.ia-stat-number {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(1.6rem, 3.5vw, 2.5rem);
    background: linear-gradient(135deg, var(--ia-accent-start), var(--ia-accent-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ia-stat-card p {
    margin-top: 6px;
    color: var(--ia-muted);
    font-size: 12px;
}

.ia-alert {
    padding-top: 20px;
    padding-bottom: 20px;
    border-top: 1px solid var(--ia-border);
    border-bottom: 1px solid var(--ia-border);
    background: rgba(12, 13, 17, 0.8);
}

.ia-alert p {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--ia-text);
}

.ia-alert-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--ia-alert);
    animation: iaPulseAlert 1.6s ease-in-out infinite;
}

.ia-pillars-beam-wrap {
    margin-bottom: 24px;
    height: 1px;
}

.ia-pillars-beam {
    display: block;
    width: 100%;
    height: 1px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 600ms ease;
    background: linear-gradient(90deg, var(--ia-accent-start), var(--ia-accent-end));
    opacity: 0.9;
}

.ia-pillars-beam.is-active {
    transform: scaleX(1);
}

.ia-pillars-grid,
.ia-use-grid,
.ia-stack-grid,
.ia-plan-grid {
    display: grid;
    gap: 16px;
}

.ia-pillars-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.ia-card,
.ia-case-card,
.ia-stack-item,
.ia-plan-card,
.ia-terminal {
    border: 1px solid var(--ia-border);
    border-radius: 16px;
    background: linear-gradient(180deg, var(--ia-surface), var(--ia-surface-alt));
    transition: border-color 300ms ease, box-shadow 300ms ease, transform 300ms ease;
}

.ia-card:hover,
.ia-case-card:hover,
.ia-stack-item:hover,
.ia-plan-card:hover {
    border-color: var(--ia-border-hover);
    box-shadow: inset 0 0 0 1px rgba(124, 58, 237, 0.3), 0 0 24px rgba(124, 58, 237, 0.12);
    transform: translateY(-3px);
}

.ia-card {
    padding: 24px;
}

.ia-card-index {
    color: var(--ia-muted);
    margin-bottom: 8px;
}

.ia-card h3 {
    margin-bottom: 10px;
    font-size: 1.4rem;
}

.ia-card p {
    color: var(--ia-muted);
    margin-bottom: 14px;
}

.ia-card ul {
    list-style: none;
    display: grid;
    gap: 9px;
}

.ia-card li {
    color: var(--ia-text);
    font-size: 13px;
    padding-left: 14px;
    position: relative;
}

.ia-card li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--ia-accent-end);
}

.ia-how-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: start;
}

.ia-steps {
    list-style: none;
    display: grid;
    gap: 12px;
}

.ia-steps li {
    border: 1px solid var(--ia-border);
    border-radius: 12px;
    background: var(--ia-surface);
    padding: 14px;
    color: var(--ia-text);
}

.ia-steps li strong {
    color: var(--ia-accent-end);
    margin-right: 8px;
}

.ia-terminal {
    overflow: hidden;
}

.ia-terminal-head {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px;
    border-bottom: 1px solid var(--ia-border);
}

.ia-terminal-head span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(232, 234, 240, 0.25);
}

.ia-terminal-head p {
    margin-left: auto;
    color: var(--ia-muted);
    font-size: 12px;
}

.ia-terminal-body {
    padding: 18px;
}

.ia-terminal-line,
.ia-terminal-answer p {
    font-size: 13px;
    color: var(--ia-text);
    margin-bottom: 8px;
}

.ia-terminal-tag {
    color: var(--ia-accent-end);
}

.ia-processing {
    display: none;
    color: var(--ia-muted);
}

.ia-processing.is-visible {
    display: block;
}

.ia-dots::after {
    content: '...';
    display: inline-block;
    width: 14px;
    overflow: hidden;
    vertical-align: bottom;
    animation: iaDots 1s steps(4, end) infinite;
}

.ia-cursor {
    display: inline-block;
    width: 7px;
    height: 1em;
    background: var(--ia-text);
    margin-left: 2px;
    animation: iaBlink 0.9s steps(1, end) infinite;
}

.ia-source {
    margin-top: 12px;
    font-family: 'Inter', sans-serif;
    font-style: italic;
    color: var(--ia-muted);
}

.ia-use-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.ia-case-card {
    padding: 20px;
}

.ia-tag {
    display: inline-flex;
    margin-bottom: 10px;
    padding: 5px 10px;
    border: 1px solid var(--ia-border);
    border-radius: 999px;
    font-size: 11px;
    color: var(--ia-muted);
}

.ia-case-card h3 {
    margin-bottom: 8px;
}

.ia-case-card p {
    color: var(--ia-muted);
    margin-bottom: 12px;
}

.ia-case-card blockquote {
    border-left: 2px solid var(--ia-accent-start);
    padding-left: 12px;
    color: var(--ia-text);
}

.ia-stack-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.ia-stack-item {
    padding: 18px;
}

.ia-stack-item h3 {
    margin-bottom: 7px;
}

.ia-stack-item p {
    color: var(--ia-muted);
    margin-bottom: 12px;
    font-size: 13px;
}

.ia-stack-item span {
    display: inline-flex;
    border: 1px solid var(--ia-border);
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 11px;
    color: var(--ia-accent-end);
}

.ia-plan-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.ia-plan-card {
    padding: 22px;
}

.ia-plan-featured {
    border-color: rgba(124, 58, 237, 0.38);
}

.ia-plan-card h3 {
    margin-bottom: 8px;
}

.ia-plan-card p {
    color: var(--ia-muted);
    margin-bottom: 10px;
}

.ia-plan-card ul {
    list-style: none;
    display: grid;
    gap: 8px;
    margin-bottom: 16px;
}

.ia-plan-card li {
    color: var(--ia-text);
    font-size: 13px;
    position: relative;
    padding-left: 14px;
}

.ia-plan-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--ia-accent-start);
}

.ia-plan-card a {
    color: var(--ia-text);
    text-decoration: none;
    border: 1px solid var(--ia-border);
    border-radius: 10px;
    padding: 10px 14px;
    display: inline-flex;
}

.ia-plan-card a:hover {
    border-color: var(--ia-border-hover);
}

.ia-final-cta {
    text-align: center;
}

.ia-final-cta h2 {
    margin-bottom: 12px;
}

.ia-final-cta p {
    color: var(--ia-muted);
    max-width: 72ch;
    margin: 0 auto 20px;
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 600ms ease, transform 600ms ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.header {
    background: transparent;
    backdrop-filter: none;
    border-bottom-color: transparent;
    transition: background 300ms ease, backdrop-filter 300ms ease, border-color 300ms ease;
}

.header.ia-header-scrolled {
    background: rgba(5, 6, 8, 0.85);
    backdrop-filter: blur(16px);
    border-bottom-color: var(--ia-border);
}

@keyframes iaOrbPulse {
    0%, 100% {
        transform: scale(0.92);
        opacity: 0.58;
    }
    50% {
        transform: scale(1.08);
        opacity: 0.9;
    }
}

@keyframes iaHeroLineIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes iaPulseAlert {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.5);
    }
    50% {
        transform: scale(1.12);
        box-shadow: 0 0 0 10px rgba(239, 68, 68, 0);
    }
}

@keyframes iaBlink {
    50% {
        opacity: 0;
    }
}

@keyframes iaDots {
    0% {
        width: 0;
    }
    100% {
        width: 14px;
    }
}

@media (min-width: 768px) {
    .ia-container {
        padding-left: 48px;
        padding-right: 48px;
    }
}

@media (max-width: 1199px) {
    .ia-pillars-grid,
    .ia-stack-grid,
    .ia-plan-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .ia-page section {
        padding: 76px 0;
    }

    .ia-hero {
        min-height: auto;
        padding-top: 120px;
    }

    .ia-hero-grid,
    .ia-how-grid,
    .ia-use-grid,
    .ia-pillars-grid,
    .ia-stack-grid,
    .ia-plan-grid {
        grid-template-columns: 1fr;
    }

    .ia-orb-primary {
        width: 280px;
        height: 280px;
        right: -120px;
    }

    .ia-orb-secondary {
        width: 220px;
        height: 220px;
        left: -90px;
    }
}