/* ============================
   HETAIROS.AI — SOVEREIGN AI
   Inverted Color Scheme (Dark)
   ============================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,600;0,8..60,700;1,8..60,400;1,8..60,600&display=swap');

/* ============================
   DESIGN TOKENS — INVERTED
   ============================ */
:root {
    /* Inverted palette: light becomes dark, dark becomes light */
    --navy: #0D1B2A;
    --navy-mid: #162744;
    --navy-light: #1B3155;
    --blue: #5A8EC5;
    --periwinkle: #8BB5E0;
    --periwinkle-soft: #A8C8EB;
    --periwinkle-glow: rgba(139, 181, 224, 0.15);
    --periwinkle-wash: rgba(139, 181, 224, 0.08);
    --ice: #D6E5F5;
    --ice-light: #E8F0F9;

    /* Inverted neutrals */
    --cream: #faf8f5;
    --warm-white: #fffefb;
    --stone: #8b8680;
    --stone-light: #a8a29e;
    --sand: #e8e4df;
    --sand-light: #f2efeb;
    --charcoal: #2c2c2b;
    --ink: #1a1a19;

    /* Shadows for dark theme */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 8px 32px rgba(139, 181, 224, 0.15);

    /* Radii */
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 28px;
    --radius-xl: 40px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-smooth: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ============================
   RESET & BASE
   ============================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--navy);
    color: rgba(255,255,255,0.8);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul { list-style: none; }
address { font-style: normal; }

::selection {
    background: var(--periwinkle);
    color: var(--navy);
}

/* ============================
   TYPOGRAPHY
   ============================ */
h1, h2 {
    font-family: 'Source Serif 4', Georgia, serif;
    font-weight: 700;
    color: white;
    line-height: 1.1;
    letter-spacing: -0.02em;
    font-optical-sizing: auto;
}

h3, h4, h5, h6 {
    font-weight: 700;
    color: white;
    line-height: 1.2;
    letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.75rem, 5.5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.2rem, 1.8vw, 1.5rem); }
h4 { font-size: 1.0625rem; }

em {
    font-family: 'Source Serif 4', Georgia, serif;
    font-style: italic;
    color: var(--periwinkle);
    font-optical-sizing: auto;
}

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

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-label {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--periwinkle);
    margin-bottom: 20px;
}

.section-label.light {
    color: var(--blue);
}

.section-header {
    margin-bottom: 56px;
}

.section-header.center {
    text-align: center;
}


.section-header h2 {
    margin-bottom: 20px;
}

.section-desc {
    font-size: 1.125rem;
    color: rgba(255,255,255,0.5);
    max-width: 640px;
    line-height: 1.75;
}

.section-header.center .section-desc {
    margin: 0 auto;
}

/* ============================
   YIN-YANG DECORATIVE ELEMENTS
   ============================ */
.yy-curve {
    position: absolute;
    pointer-events: none;
    z-index: 0;
}

.yy-divider {
    position: relative;
    height: 120px;
    overflow: hidden;
}

.yy-divider svg {
    position: absolute;
    width: 100%;
    height: 100%;
}

.circle-accent {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}

.circle-accent.navy {
    background: radial-gradient(circle at 40% 40%, var(--cream), var(--sand));
}

.circle-accent.peri {
    background: radial-gradient(circle at 40% 40%, var(--periwinkle-soft), var(--periwinkle));
}

/* ============================
   BUTTONS
   ============================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 32px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.02em;
    border-radius: var(--radius-sm);
    border: 1.5px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn i { font-size: 12px; }

.btn-primary {
    background: var(--cream);
    color: var(--navy);
    border-color: var(--cream);
}

.btn-primary:hover {
    background: white;
    border-color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: rgba(255,255,255,0.06);
    color: white;
    border-color: rgba(255,255,255,0.12);
}

.btn-secondary:hover {
    border-color: var(--periwinkle);
    background: rgba(139, 181, 224, 0.1);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid rgba(255,255,255,0.2);
}

.btn-outline:hover {
    background: white;
    color: var(--navy);
}

.btn-outline.light {
    color: var(--navy);
    border-color: rgba(13, 27, 42, 0.2);
}

.btn-outline.light:hover {
    background: var(--navy);
    color: white;
    border-color: var(--navy);
}

.btn-ghost {
    background: transparent;
    color: white;
    padding: 16px 20px;
    border: none;
}

.btn-ghost:hover { color: var(--periwinkle); }

.btn-lg {
    padding: 20px 44px;
    font-size: 15px;
}

/* ============================
   HEADER
   ============================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 24px;
    transition: all var(--transition-smooth);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
    padding: 10px 12px 10px 20px;
    background: rgba(13, 27, 42, 0.88);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    transition: all var(--transition-smooth);
}

.header.scrolled .header-inner {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    width: 38px;
    height: 38px;
    object-fit: contain;
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.logo-name {
    font-size: 1.125rem;
    font-weight: 800;
    color: white;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.logo-subtitle {
    font-size: 10px;
    font-weight: 600;
    color: rgba(255,255,255,0.4);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 2px;
}

.main-nav a {
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 600;
    color: rgba(255,255,255,0.6);
    letter-spacing: 0.01em;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.main-nav a:hover {
    color: white;
    background: rgba(255,255,255,0.06);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-actions .btn {
    padding: 12px 28px;
    font-size: 13px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 22px;
    height: 2px;
    background: white;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================
   HERO
   ============================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 140px 24px 100px;
    position: relative;
    overflow: hidden;
    background: var(--navy);
}

/* Inverted: light shape flows from top-right */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 45%;
    height: 100%;
    background: var(--cream);
    border-radius: 0 0 0 48% / 0 0 0 60%;
    z-index: 0;
}

.hero .container-wide {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    color: var(--periwinkle);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    margin-bottom: 28px;
}

.hero h1 {
    margin-bottom: 24px;
    color: white;
}

.hero-desc {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.55);
    line-height: 1.75;
    margin-bottom: 44px;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-aside {
    color: var(--navy);
    display: flex;
    flex-direction: column;
    gap: 0;
}

.hero-stats {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.hero-stat {
    padding: 24px 0;
    display: flex;
    align-items: baseline;
    gap: 16px;
}

.hero-stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1;
    color: var(--navy);
    flex-shrink: 0;
}

.hero-stat-label {
    font-size: 14px;
    font-weight: 500;
    color: rgba(13, 27, 42, 0.45);
    letter-spacing: 0.02em;
    line-height: 1.3;
}

/* ============================
   SECTION: PROBLEM
   ============================ */
.problem {
    padding: 120px 0;
    background: var(--navy);
    position: relative;
}

.problem-layout {
    display: grid;
    grid-template-columns: 0.4fr 0.6fr;
    gap: 80px;
    align-items: start;
}

.problem-left {
    position: sticky;
    top: 120px;
}

.problem-content p {
    font-size: 1.0625rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.85;
    margin-bottom: 24px;
}

.problem-content p:last-child { margin-bottom: 0; }

.problem-highlight {
    margin: 36px 0;
    padding: 32px 0;
    background: none;
    border-top: 1px solid rgba(255,255,255,0.08);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    font-family: 'Source Serif 4', Georgia, serif;
    font-style: italic;
    font-size: 1.3125rem;
    font-weight: 400;
    color: white;
    line-height: 1.55;
}

/* ============================
   SECTION: CONTEXT (light in inverted)
   ============================ */
.context {
    padding: 120px 0;
    background: var(--cream);
    color: var(--charcoal);
    position: relative;
    overflow: hidden;
}

.context::before {
    content: '';
    position: absolute;
    top: -40px;
    left: 0;
    right: 0;
    height: 80px;
    background: var(--navy);
    border-radius: 0 0 50% 50% / 0 0 100% 100%;
}


.context .container {
    position: relative;
    z-index: 1;
}

.context h2 { color: var(--navy); }
.context h2 em { color: var(--blue); }

.context-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.context-text p {
    font-size: 1.0625rem;
    color: var(--charcoal);
    line-height: 1.85;
    margin-bottom: 24px;
}

.context-callout {
    position: relative;
    padding-top: 40px;
}

.context-callout::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--blue);
    border-radius: var(--radius-full);
}

.context-callout p {
    font-family: 'Source Serif 4', Georgia, serif;
    font-style: italic;
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--navy);
    line-height: 1.55;
    margin-bottom: 0;
}

/* ============================
   SECTION: SOLUTION
   ============================ */
.solution {
    padding: 120px 0;
    background: var(--navy);
    position: relative;
    overflow: hidden;
}

.solution::before {
    content: '';
    position: absolute;
    top: -40px;
    left: 0;
    right: 0;
    height: 80px;
    background: var(--cream);
    border-radius: 0 0 50% 50% / 0 0 100% 100%;
}

.solution .container {
    position: relative;
    z-index: 1;
}

.solution-intro {
    max-width: 800px;
    margin-bottom: 72px;
}

.solution-intro p {
    font-size: 1.125rem;
    color: rgba(255,255,255,0.55);
    line-height: 1.75;
    margin-bottom: 16px;
}

.pillars {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.pillar {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-md);
    padding: 44px 36px;
    transition: all var(--transition-smooth);
    opacity: 0;
    transform: translateY(30px);
    position: relative;
    overflow: hidden;
}

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

.pillar:nth-child(2).visible { transition-delay: 0.1s; }
.pillar:nth-child(3).visible { transition-delay: 0.2s; }

.pillar:hover {
    border-color: rgba(139, 181, 224, 0.25);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.pillar-number {
    width: 56px;
    height: 56px;
    background: var(--cream);
    color: var(--navy);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 800;
    margin-bottom: 28px;
}

.pillar h3 {
    margin-bottom: 16px;
    color: white;
}

.pillar p {
    font-size: 15px;
    color: rgba(255,255,255,0.5);
    line-height: 1.75;
}

/* ============================
   SECTION: COMPLIANCE
   ============================ */
.compliance {
    padding: 120px 0;
    background: var(--navy-mid);
}

.compliance-intro {
    max-width: 800px;
    margin-bottom: 72px;
}

.compliance-intro p {
    font-size: 1.0625rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.85;
    margin-bottom: 20px;
}

.compliance-approach {
    padding: 36px 40px;
    margin: 36px 0;
    background: var(--cream);
    border-radius: var(--radius-md);
    font-size: 1.1875rem;
    font-weight: 700;
    color: var(--navy);
    line-height: 1.5;
    letter-spacing: -0.01em;
    position: relative;
    overflow: hidden;
}

.compliance-approach::before {
    content: '';
    position: absolute;
    top: -30px;
    right: -30px;
    width: 120px;
    height: 120px;
    background: var(--blue);
    border-radius: 50%;
    opacity: 0.08;
}

.team-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    margin-top: 72px;
    padding-top: 72px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.team-section h3 { margin-bottom: 32px; }

.team-roles {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.team-role {
    padding: 20px 24px;
    background: rgba(255,255,255,0.04);
    border-radius: var(--radius-md);
    display: flex;
    gap: 16px;
    align-items: flex-start;
    opacity: 0;
    transform: translateX(-20px);
    transition: all var(--transition-smooth);
}

.team-role.visible {
    opacity: 1;
    transform: translateX(0);
}

.team-role:nth-child(2).visible { transition-delay: 0.05s; }
.team-role:nth-child(3).visible { transition-delay: 0.1s; }
.team-role:nth-child(4).visible { transition-delay: 0.15s; }

.team-role-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: var(--cream);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--navy);
    font-size: 16px;
}

.team-role p {
    font-size: 15px;
    color: rgba(255,255,255,0.7);
    line-height: 1.65;
    padding-top: 6px;
}

.team-extra {
    margin-top: 28px;
    padding: 0;
}

.team-extra p {
    font-size: 14px;
    color: rgba(255,255,255,0.45);
    line-height: 1.75;
    font-style: italic;
}

.compliance-why { margin-top: 0; }
.compliance-why h3 { margin-bottom: 24px; }

.compliance-why p {
    font-size: 15px;
    color: rgba(255,255,255,0.65);
    line-height: 1.8;
    margin-bottom: 16px;
}

/* ============================
   SECTION: HYBRID MODEL (light in inverted)
   ============================ */
.hybrid {
    padding: 120px 0;
    background: var(--cream);
    color: var(--charcoal);
    position: relative;
    overflow: hidden;
}

.hybrid::before {
    content: '';
    position: absolute;
    top: -60px;
    left: 0;
    right: 0;
    height: 120px;
    background: var(--navy-mid);
    border-radius: 0 0 50% 50%;
}


.hybrid .container {
    position: relative;
    z-index: 1;
}

.hybrid h2 { color: var(--navy); }
.hybrid h2 em { color: var(--blue); }

.hybrid-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.hybrid-text p {
    font-size: 1.0625rem;
    color: var(--charcoal);
    line-height: 1.85;
    margin-bottom: 24px;
}

.hybrid-text p strong {
    color: var(--navy);
}

.hybrid-diagram {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.hybrid-layer {
    padding: 28px 32px;
    border-radius: var(--radius-lg);
    background: var(--navy);
    border: 1px solid rgba(255,255,255,0.06);
    transition: all var(--transition-smooth);
    opacity: 0;
    transform: translateX(30px);
}

.hybrid-layer.visible {
    opacity: 1;
    transform: translateX(0);
}

.hybrid-layer:nth-child(2).visible { transition-delay: 0.1s; }
.hybrid-layer:nth-child(3).visible { transition-delay: 0.2s; }

.hybrid-layer:hover {
    background: var(--navy-mid);
    border-color: rgba(139, 181, 224, 0.25);
}

.hybrid-layer-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 10px;
}

.hybrid-layer-icon {
    width: 40px;
    height: 40px;
    background: rgba(139, 181, 224, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: var(--periwinkle);
}

.hybrid-layer-header h4 {
    color: white;
    font-size: 1rem;
    font-weight: 700;
}

.hybrid-layer p {
    font-size: 14px;
    color: rgba(255,255,255,0.5);
    line-height: 1.7;
    padding-left: 54px;
}

/* ============================
   SECTION: INDUSTRIES
   ============================ */
.industries {
    padding: 120px 0;
    background: var(--navy);
    position: relative;
    overflow: hidden;
}

.industries::before {
    content: '';
    position: absolute;
    top: -40px;
    left: 0;
    right: 0;
    height: 80px;
    background: var(--cream);
    border-radius: 0 0 50% 50% / 0 0 100% 100%;
}

.industries .container {
    position: relative;
    z-index: 1;
}

.industry-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.industry-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-md);
    padding: 40px 36px;
    cursor: pointer;
    transition: all var(--transition-smooth);
    opacity: 0;
    transform: translateY(20px);
    position: relative;
    overflow: hidden;
}

.industry-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.industry-card:nth-child(2).visible { transition-delay: 0.05s; }
.industry-card:nth-child(3).visible { transition-delay: 0.1s; }
.industry-card:nth-child(4).visible { transition-delay: 0.15s; }
.industry-card:nth-child(5).visible { transition-delay: 0.2s; }
.industry-card:nth-child(6).visible { transition-delay: 0.25s; }

.industry-card:hover {
    border-color: rgba(139, 181, 224, 0.2);
    box-shadow: var(--shadow-md);
}

.industry-card.active {
    background: var(--cream);
    color: var(--charcoal);
    border-color: var(--cream);
}

.industry-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.industry-icon {
    width: 52px;
    height: 52px;
    background: rgba(139, 181, 224, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--periwinkle);
    transition: all var(--transition-base);
}

.industry-card.active .industry-icon {
    background: var(--periwinkle-wash);
    color: var(--navy);
}

.industry-toggle {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: rgba(255,255,255,0.3);
    transition: all var(--transition-base);
}

.industry-card.active .industry-toggle {
    color: var(--blue);
    transform: rotate(45deg);
}

.industry-card h3 {
    margin-bottom: 12px;
    transition: color var(--transition-base);
}

.industry-card.active h3 { color: var(--navy); }

.industry-hook {
    font-size: 15px;
    font-weight: 500;
    color: rgba(255,255,255,0.6);
    line-height: 1.65;
    font-family: 'Source Serif 4', Georgia, serif;
    font-style: italic;
    transition: color var(--transition-base);
}

.industry-card.active .industry-hook {
    color: var(--charcoal);
}

.industry-detail {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.industry-card.active .industry-detail {
    max-height: 300px;
    padding-top: 20px;
}

.industry-detail p {
    font-size: 14px;
    color: var(--stone);
    line-height: 1.8;
    padding-top: 20px;
    border-top: 1px solid var(--sand);
}

/* ============================
   SECTION: POLISH MODELS
   ============================ */
.models {
    padding: 120px 0;
    background: var(--navy-mid);
}

.models-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.models-content p {
    font-size: 1.0625rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.85;
    margin-bottom: 24px;
}

.models-highlight {
    font-family: 'Source Serif 4', Georgia, serif;
    font-style: italic;
    font-size: 2rem;
    font-weight: 400;
    color: white;
    letter-spacing: -0.01em;
    line-height: 1.2;
    padding: 40px 0;
    border-top: 1px solid rgba(255,255,255,0.08);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.models-highlight em { color: var(--periwinkle); font-size: inherit; }

.models-extra {
    margin-top: 24px;
}

.models-extra p {
    font-size: 15px;
    color: rgba(255,255,255,0.5);
    line-height: 1.8;
}

.models-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 24px;
}

.model-item {
    padding: 24px 28px;
    background: rgba(255,255,255,0.04);
    border-radius: var(--radius-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-base);
}

.model-item:hover {
    background: rgba(255,255,255,0.07);
}

.model-item-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    letter-spacing: -0.01em;
}

.model-item-desc {
    font-size: 13px;
    color: rgba(255,255,255,0.45);
    text-align: right;
}

/* ============================
   SECTION: STRUCTURAL ADVANTAGE (light in inverted)
   ============================ */
.advantage {
    padding: 120px 0;
    background: var(--cream);
    color: var(--charcoal);
    position: relative;
    overflow: hidden;
}

.advantage::before {
    content: '';
    position: absolute;
    top: -60px;
    left: 0;
    right: 0;
    height: 120px;
    background: var(--navy-mid);
    border-radius: 0 0 50% 50%;
}


.advantage .container {
    position: relative;
    z-index: 1;
}

.advantage h2 {
    color: var(--navy);
    max-width: 700px;
    margin-bottom: 64px;
}

.advantage h2 em { color: var(--blue); }

.advantage-intro {
    font-size: 1.1rem;
    color: var(--charcoal);
    line-height: 1.8;
    max-width: 700px;
    margin-bottom: 48px;
}

.advantage-closing {
    font-size: 15px;
    color: var(--stone);
    line-height: 1.8;
    max-width: 700px;
    margin-top: 48px;
    font-style: italic;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.advantage-card {
    padding: 40px 32px;
    background: var(--navy);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-md);
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-smooth);
}

.advantage-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.advantage-card:nth-child(2).visible { transition-delay: 0.1s; }
.advantage-card:nth-child(3).visible { transition-delay: 0.2s; }

.advantage-card:hover {
    background: var(--navy-mid);
    border-color: rgba(139, 181, 224, 0.2);
    transform: translateY(-4px);
}

.advantage-card h3 {
    color: white;
    margin-bottom: 16px;
    font-size: 1.25rem;
}

.advantage-card p {
    font-size: 15px;
    color: rgba(255,255,255,0.6);
    line-height: 1.8;
}

/* ============================
   SECTION: AI AS ASSET
   ============================ */
.asset {
    padding: 120px 0;
    background: var(--navy);
    position: relative;
    overflow: hidden;
}

.asset::before {
    content: '';
    position: absolute;
    top: -40px;
    left: 0;
    right: 0;
    height: 80px;
    background: var(--cream);
    border-radius: 0 0 50% 50% / 0 0 100% 100%;
}

.asset .container {
    position: relative;
    z-index: 1;
}

.asset-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.asset-content p {
    font-size: 1.0625rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.85;
    margin-bottom: 24px;
}

.asset-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.asset-col {
    padding: 36px;
    border-radius: var(--radius-md);
}

.asset-col:first-child {
    background: rgba(255,255,255,0.04);
}

.asset-col.dark {
    background: var(--cream);
    color: var(--charcoal);
}

.asset-col h4 {
    margin-bottom: 24px;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.asset-col:not(.dark) h4 { color: rgba(255,255,255,0.4); }
.asset-col.dark h4 { color: var(--blue); }

.asset-col ul {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.asset-col li {
    font-size: 14px;
    line-height: 1.6;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.asset-col:not(.dark) li { color: rgba(255,255,255,0.55); }
.asset-col.dark li { color: var(--charcoal); }

.asset-col li i {
    margin-top: 4px;
    font-size: 10px;
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.asset-col:not(.dark) li i {
    color: rgba(255,255,255,0.4);
    background: rgba(255,255,255,0.06);
}

.asset-col.dark li i {
    color: var(--blue);
    background: rgba(58, 110, 165, 0.12);
}

/* ============================
   SECTION: HOW WE WORK
   ============================ */
.process {
    padding: 120px 0;
    background: var(--navy-mid);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.process-step {
    padding: 36px 28px;
    background: rgba(255,255,255,0.03);
    border-radius: var(--radius-md);
    transition: all var(--transition-smooth);
    opacity: 0;
    transform: translateY(20px);
}

.process-step.visible {
    opacity: 1;
    transform: translateY(0);
}

.process-step:nth-child(2).visible { transition-delay: 0.1s; }
.process-step:nth-child(3).visible { transition-delay: 0.2s; }
.process-step:nth-child(4).visible { transition-delay: 0.3s; }

.process-step:hover {
    background: rgba(255,255,255,0.06);
    box-shadow: var(--shadow-md);
}

.process-number {
    width: 52px;
    height: 52px;
    background: var(--cream);
    color: var(--navy);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    font-weight: 800;
    margin-bottom: 24px;
}

.process-step h4 {
    font-size: 1.0625rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: white;
}

.process-step p {
    font-size: 14px;
    color: rgba(255,255,255,0.5);
    line-height: 1.75;
}

/* ============================
   SECTION: NOT FOR EVERYONE
   ============================ */
.honest {
    padding: 120px 0;
    background: var(--navy);
}

.honest-layout {
    display: grid;
    grid-template-columns: 0.45fr 0.55fr;
    gap: 80px;
    align-items: start;
}

.honest-left h2 { margin-bottom: 24px; }

.honest-left > p {
    font-size: 15px;
    color: rgba(255,255,255,0.45);
    line-height: 1.75;
    margin-top: 20px;
}

.honest-right {
    padding: 0;
}

.honest-right p {
    font-size: 1.0625rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.85;
    margin-bottom: 28px;
    padding-bottom: 28px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.honest-right p:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.honest-right strong { color: white; }

/* ============================
   SECTION: ABOUT (light in inverted)
   ============================ */
.about {
    padding: 120px 0;
    background: var(--cream);
    color: var(--charcoal);
    position: relative;
    overflow: hidden;
}

.about::before {
    content: '';
    position: absolute;
    top: -40px;
    left: 0;
    right: 0;
    height: 80px;
    background: var(--navy);
    border-radius: 0 0 50% 50% / 0 0 100% 100%;
}


.about .container {
    position: relative;
    z-index: 1;
}

.about h2 { color: var(--navy); }
.about h2 em { color: var(--blue); }

.about-content {
    max-width: 800px;
}

.about-content p {
    font-size: 1.0625rem;
    color: var(--charcoal);
    line-height: 1.85;
    margin-bottom: 24px;
}

.about-mission {
    margin-top: 56px;
    padding-top: 40px;
    position: relative;
}

.about-mission::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--blue);
    border-radius: var(--radius-full);
}

.about-mission p {
    font-family: 'Source Serif 4', Georgia, serif;
    font-style: italic;
    font-size: 1.1875rem;
    font-weight: 400;
    color: var(--navy);
    line-height: 1.6;
    margin-bottom: 0;
}

/* ============================
   SECTION: FINAL CTA
   ============================ */
.final-cta {
    padding: 120px 0;
    background: var(--navy);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.final-cta::before {
    content: '';
    position: absolute;
    top: -40px;
    left: 0;
    right: 0;
    height: 80px;
    background: var(--cream);
    border-radius: 0 0 50% 50% / 0 0 100% 100%;
}

.final-cta .container {
    position: relative;
    z-index: 1;
}


.final-cta h2 {
    max-width: 780px;
    margin: 0 auto 24px;
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
}

.final-cta .cta-sub {
    font-size: 1.125rem;
    color: rgba(255,255,255,0.5);
    margin-bottom: 48px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.75;
}

.final-cta .btn-primary {
    padding: 22px 52px;
    font-size: 15px;
}

/* ============================
   FOOTER (light in inverted)
   ============================ */
.footer {
    background: var(--cream);
    padding: 64px 0 40px;
    color: var(--charcoal);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 60px;
}

.footer-brand .logo { margin-bottom: 20px; }
.footer-brand .logo-name { color: var(--navy); }
.footer-brand .logo-subtitle { color: var(--stone); }

.footer-brand p {
    color: var(--stone);
    font-size: 14px;
    line-height: 1.7;
    max-width: 320px;
}

.footer-links h4 {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--stone-light);
    margin-bottom: 24px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.footer-links a, .footer-links li {
    font-size: 14px;
    color: var(--charcoal);
    transition: color var(--transition-fast);
}

.footer-links a:hover { color: var(--blue); }

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid var(--sand);
}

.footer-bottom p {
    font-size: 12px;
    color: var(--stone);
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a {
    font-size: 12px;
    color: var(--stone);
}

.footer-legal a:hover { color: var(--charcoal); }

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 1024px) {
    .hero .container-wide {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .hero::before {
        top: auto;
        bottom: 0;
        height: 35%;
        width: 100%;
        border-radius: 50% 50% 0 0;
    }

    .hero-stats {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .hero-stat {
        padding: 20px 24px;
    }

    .problem-layout,
    .context-layout,
    .hybrid-layout,
    .models-layout,
    .asset-layout,
    .honest-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .problem-left { position: static; }

    .pillars {
        grid-template-columns: 1fr;
    }

    .advantage-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

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

    .industry-grid {
        grid-template-columns: 1fr;
    }

    .team-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 10px 12px;
    }

    .header-inner {
        padding: 8px 8px 8px 16px;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: calc(100% + 8px);
        left: 0;
        right: 0;
        background: var(--navy-mid);
        border: 1px solid rgba(255,255,255,0.08);
        border-radius: var(--radius-md);
        padding: 12px;
        flex-direction: column;
        box-shadow: var(--shadow-lg);
    }

    .main-nav.active { display: flex; }

    .main-nav a {
        padding: 14px 16px;
    }

    .header-actions { display: none; }
    .mobile-menu-btn { display: flex; }

    .hero {
        padding: 120px 20px 60px;
        min-height: auto;
    }

    .hero::before {
        display: none;
    }

    .hero-aside {
        background: var(--cream);
        margin: 0 -20px;
        padding: 32px 20px;
        border-radius: var(--radius-lg);
        margin-top: 16px;
    }

    .hero-stat::before {
        display: none;
    }

    .hero-stat {
        padding: 16px 0;
    }

    h1 { font-size: clamp(2rem, 8vw, 2.75rem); }
    h2 { font-size: clamp(1.75rem, 5vw, 2.25rem); }

    /* Remove wave curves on mobile */
    .context::before,
    .solution::before,
    .hybrid::before,
    .industries::before,
    .advantage::before,
    .asset::before,
    .about::before,
    .final-cta::before {
        display: none;
    }

    .pillars,
    .process-steps {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .asset-comparison {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .industry-card {
        padding: 28px 24px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
    }
}

/* ============================
   ANIMATIONS
   ============================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content {
    animation: fadeInUp 0.8s ease-out both;
}

.hero-aside {
    animation: fadeInUp 0.8s ease-out 0.3s both;
}