:root {
    --surface:   #ffffff;
    --surface-2: #f7f8fa;

    --ink:   #14202e;
    --ink-2: #54616f;
    --ink-3: #8b95a2;

    --line:   #e4e6ea;
    --line-2: #d6dae0;

    --on-dark:   rgba(255,255,255,0.92);
    --on-dark-2: rgba(255,255,255,0.62);

    --accent:      #2ec396;
    --accent-deep: #1aa37d;
    --blue:        #6095be;

    --shadow-sm: 0 1px 2px rgba(20,32,46,0.05);
    --shadow-md: 0 2px 8px rgba(20,32,46,0.05), 0 14px 30px rgba(20,32,46,0.07);
    --shadow-lg: 0 10px 28px rgba(20,32,46,0.08), 0 40px 80px rgba(20,32,46,0.12);

    --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

.au, .au *, .au *::before, .au *::after { box-sizing: border-box; }
.au h1, .au h2, .au h3, .au h4, .au p, .au blockquote { margin: 0; }

.au {
    background: var(--surface);
    color: var(--ink);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.au-shell {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

.au-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent-deep);
    margin-bottom: 18px;
}

.au-label::before {
    content: '';
    width: 22px;
    height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--accent), var(--blue));
}

.au-band { background: var(--surface); }

.au-band--alt {
    background: var(--surface-2);
    border-block: 1px solid var(--line);
}

.au-band--first {
    position: relative;
    z-index: 1;
    margin-top: -40px;
    border-top-left-radius: 36px;
    border-top-right-radius: 36px;
}

.au-hero {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 52vh;
    overflow: hidden;
}

.au-hero-bg { position: absolute; inset: 0; z-index: 0; }

.au-hero-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 35%;
    display: block;
}

.au-hero-overlay {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 78% 18%, rgba(46,195,150,0.14), transparent 55%),
        linear-gradient(180deg, rgba(22,40,61,0.58) 0%, rgba(22,40,61,0.58) 32%, rgba(22,40,61,0.88) 80%, rgba(22,40,61,0.98) 100%);
}

.au-hero-inner {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    padding: 72px 24px 104px;
}

.au-hero-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 22px;
}

.au-hero-title {
    max-width: 940px;
    font-size: clamp(2.1rem, 4.4vw, 3.4rem);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -0.03em;
    color: #ffffff;
    margin-bottom: 52px;
}

.au-hero-cta {
    margin-top: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.au-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 10px;
    font-size: 0.94rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease), background 0.22s var(--ease), border-color 0.22s var(--ease);
}

.au-btn i { font-size: 0.8em; transition: transform 0.22s var(--ease); }
.au-btn:hover i { transform: translateX(3px); }

.au-btn--primary {
    background: linear-gradient(120deg, var(--accent), var(--accent-deep));
    color: #ffffff;
    border: 1px solid transparent;
    box-shadow: 0 4px 16px rgba(46,195,150,0.32);
}

.au-btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 26px rgba(46,195,150,0.42);
}

.au-btn--ghost {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.28);
    color: #ffffff;
    backdrop-filter: blur(6px);
}

.au-btn--ghost:hover {
    background: rgba(255,255,255,0.14);
    border-color: rgba(255,255,255,0.5);
    transform: translateY(-2px);
}

.au-head { max-width: 640px; margin-bottom: 48px; }

.au-head h2 {
    font-size: clamp(2rem, 3.6vw, 2.6rem);
    font-weight: 800;
    color: var(--ink);
    line-height: 1.12;
    letter-spacing: -0.03em;
}

.au-head--center {
    text-align: center;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.au-head--center .au-label { justify-content: center; }

.au-head--center p {
    font-size: 1.05rem;
    line-height: 1.72;
    color: var(--ink-2);
    margin-top: 16px;
}

.au-intro { padding: 104px 0; }

.au-intro-shell {
    max-width: 820px;
    text-align: center;
}

.au-intro .au-label { justify-content: center; }

.au-intro-lead {
    font-size: clamp(1.3rem, 2.4vw, 1.7rem);
    font-weight: 500;
    line-height: 1.5;
    letter-spacing: -0.015em;
    color: var(--ink);
    margin-bottom: 24px;
}

.au-intro-body {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--ink-2);
    max-width: 680px;
    margin: 0 auto;
}

.au-hiw { padding: 96px 0; }

.au-hiw-shell {
    max-width: 860px;
    text-align: center;
}

.au-hiw .au-label { justify-content: center; }

.au-hiw-statement {
    font-size: clamp(1.4rem, 2.6vw, 1.9rem);
    font-weight: 600;
    line-height: 1.5;
    letter-spacing: -0.02em;
    color: var(--ink);
}

.au-models { padding: 104px 0; }

.au-models-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.au-model {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 44px 40px;
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

.au-model:hover {
    transform: translateY(-4px);
    border-color: var(--line-2);
    box-shadow: var(--shadow-md);
}

.au-model h3 {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--ink);
    letter-spacing: -0.02em;
    margin-bottom: 14px;
}

.au-model p {
    font-size: 1rem;
    line-height: 1.72;
    color: var(--ink-2);
    flex-grow: 1;
    margin-bottom: 28px;
}

.au-text-link {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--accent-deep);
    text-decoration: none;
}

.au-text-link span { transition: transform 0.25s var(--ease); }
.au-text-link:hover span { transform: translateX(5px); }

.au-mission { padding: 100px 0; }

.au-mission-quote {
    max-width: 920px;
    margin: 0 auto;
    text-align: center;
    font-size: clamp(1.45rem, 3vw, 2.1rem);
    font-weight: 600;
    line-height: 1.48;
    letter-spacing: -0.02em;
    color: var(--ink);
}

.au-mission-quote::before {
    content: '';
    display: block;
    width: 46px;
    height: 3px;
    border-radius: 3px;
    margin: 0 auto 30px;
    background: linear-gradient(90deg, var(--accent), var(--blue));
}

.au-video { padding: 104px 0; }
.au-video .au-head { text-align: center; max-width: 720px; margin-left: auto; margin-right: auto; }
.au-video .au-label { justify-content: center; }

.au-video-frame-wrap {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.au-video-frame {
    width: 100%;
    aspect-ratio: 16 / 9;
    height: auto;
    display: block;
    border: none;
    border-radius: 18px;
    background: #000;
    box-shadow: var(--shadow-md);
}

.au-video-placeholder {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    text-align: center; aspect-ratio: 16 / 9;
    gap: 16px; padding: 40px;
    background: var(--canvas-2);
    border: 1px solid var(--line);
    border-radius: 18px;
}

.au-video-placeholder i { color: var(--ink-3); opacity: 0.6; }
.au-video-placeholder h3 { color: var(--ink-2); font-size: 1.05rem; font-weight: 600; margin: 0; }

.cp-accept-btn {
    color: var(--accent-deep); font-weight: 700; text-decoration: underline;
    text-underline-offset: 2px; cursor: pointer;
    transition: color 0.2s var(--ease);
}

.cp-accept-btn:hover { color: var(--accent); }

.au-tech { padding: 104px 0; }

.au-pipeline {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 8px;
    margin-bottom: 56px;
}

.au-pipeline-step {
    flex: 1;
    max-width: 300px;
    text-align: center;
    padding: 0 18px;
}

.au-pipeline-icon {
    font-size: 1.6rem;
    line-height: 1;
    color: var(--accent-deep);
    margin-bottom: 18px;
}

.au-pipeline-step h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 10px;
}

.au-pipeline-step p {
    font-size: 0.92rem;
    line-height: 1.65;
    color: var(--ink-2);
}

.au-pipeline-arrow {
    color: var(--ink-3);
    font-size: 0.95rem;
    margin-top: 4px;
    flex-shrink: 0;
    align-self: center;
}

.au-pillars {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.au-pillar {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 34px 32px;
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

.au-pillar:hover {
    transform: translateY(-4px);
    border-color: var(--line-2);
    box-shadow: var(--shadow-md);
}

.au-pillar-icon {
    font-size: 1.4rem;
    line-height: 1;
    color: var(--accent-deep);
    margin-bottom: 20px;
}

.au-pillar h3 {
    font-size: 1.12rem;
    font-weight: 700;
    color: var(--ink);
    letter-spacing: -0.01em;
    margin-bottom: 12px;
}

.au-pillar p {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--ink-2);
}

.au-related { padding: 104px 0; background: var(--surface); }

.au-related-title {
    font-size: clamp(1.9rem, 3.4vw, 2.5rem);
    font-weight: 800;
    text-align: center;
    color: var(--ink);
    letter-spacing: -0.03em;
    margin-bottom: 56px;
}

.au-related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 26px;
    padding-top: 20px;
}

.au-related-card {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 16px;
    overflow: hidden;
    text-decoration: none;
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

.au-related-card:hover {
    transform: translateY(-6px);
    border-color: var(--line-2);
    box-shadow: var(--shadow-lg);
}

.au-related-image {
    height: 180px;
    overflow: hidden;
    background: var(--surface-2);
}

.au-related-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s var(--ease);
}

.au-related-card:hover .au-related-image img { transform: scale(1.06); }

.au-related-info { padding: 24px; }

.au-related-info h3 {
    font-size: 1.08rem;
    font-weight: 700;
    color: var(--ink);
    letter-spacing: -0.01em;
    margin-bottom: 8px;
}

.au-related-info p {
    font-size: 0.92rem;
    line-height: 1.6;
    color: var(--ink-2);
}

.au-cut-into-footer {
    position: relative;
    z-index: 1;
    margin-bottom: -40px;
    padding-bottom: 144px;
    border-bottom-left-radius: 36px;
    border-bottom-right-radius: 36px;
}

@media (max-width: 1024px) {
    .au-related-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
    .au-models-grid { grid-template-columns: 1fr; }
    .au-pillars { grid-template-columns: 1fr; }

    .au-pipeline { flex-direction: column; align-items: center; gap: 28px; }
    .au-pipeline-step { max-width: 420px; }
    .au-pipeline-arrow { transform: rotate(90deg); margin: 0; }

    .au-intro,
    .au-hiw,
    .au-models,
    .au-mission,
    .au-video,
    .au-tech,
    .au-related { padding: 72px 0; }
}

@media (max-width: 600px) {
    .au-shell { padding: 0 18px; }

    .au-hero-inner { padding: 72px 20px 100px; }
    .au-hero-cta { flex-direction: column; align-items: stretch; }
    .au-btn { justify-content: center; }

    .au-model { padding: 34px 28px; }
    .au-related-grid { grid-template-columns: 1fr; }
}