/* ============================================
   FEIKEN AVIATION TECHNOLOGY - Main Stylesheet
   ============================================ */

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #0a1628;
    --primary-light: #132040;
    --accent: #d4a853;
    --accent-light: #e8c97a;
    --accent-dark: #b8942e;
    --text: #e8ecf1;
    --text-muted: #8899aa;
    --text-dark: #1a2a3a;
    --bg-dark: #060f1e;
    --bg-card: rgba(255,255,255,0.03);
    --bg-card-hover: rgba(255,255,255,0.06);
    --border: rgba(255,255,255,0.08);
    --border-light: rgba(255,255,255,0.12);
    --gradient-1: linear-gradient(135deg, #0a1628 0%, #132040 50%, #0d1f3c 100%);
    --gradient-2: linear-gradient(135deg, #d4a853 0%, #c4943a 50%, #a67c2e 100%);
    --gradient-hero: linear-gradient(180deg, #060f1e 0%, #0a1628 40%, #0d1a30 100%);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.5);
    --shadow-card: 0 4px 20px rgba(0,0,0,0.3);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
}

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

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0 2rem;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(6, 15, 30, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.nav-container {
    max-width: 1300px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 84px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0;
}

.logo-img {
    height: 66px;
    width: auto;
    object-fit: contain;
    padding: 8px 14px;
    background: rgba(255,255,255,0.92);
    border-radius: 10px;
}

.footer-logo {
    height: 72px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 4px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: #fff;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
    border-radius: 2px;
}

/* --- Language Toggle Button --- */
.lang-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: 1.5rem;
    padding: 7px 15px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(212,168,83,0.5);
    border-radius: 30px;
    color: #fff;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    font-family: inherit;
}
.lang-toggle:hover {
    background: rgba(212,168,83,0.18);
    border-color: var(--accent);
    color: #fff;
}
.lang-toggle svg {
    width: 15px;
    height: 15px;
    opacity: 0.85;
}

/* --- Bilingual display rules --- */
html[data-lang="zh"] .i18n-en { display: none !important; }
html[data-lang="en"] .i18n-zh { display: none !important; }

/* --- Hero Section --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--gradient-hero);
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-particles {
    position: absolute;
    inset: 0;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(212,168,83,0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(212,168,83,0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(100,150,220,0.04) 0%, transparent 50%);
    animation: bgFloat 20s ease-in-out infinite;
}

@keyframes bgFloat {
    0%, 100% { transform: translate(0, 0); }
    33% { transform: translate(2%, -1%); }
    66% { transform: translate(-1%, 2%); }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 2rem;
    max-width: 900px;
}

.hero-badge {
    display: inline-block;
    padding: 6px 20px;
    border: 1px solid var(--accent);
    border-radius: 50px;
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
    background: rgba(212,168,83,0.05);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero-title-line {
    display: block;
    color: #fff;
}

.hero-accent {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2.5rem;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 3rem;
}

.hero-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.stat-num {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.02em;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    transition: var(--transition);
    animation: bounceDown 2s ease-in-out infinite;
}

.scroll-indicator:hover {
    color: var(--accent);
}

@keyframes bounceDown {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* --- Section Common --- */
.section {
    padding: 6rem 2rem;
    position: relative;
}

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

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-num {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.15em;
    padding: 4px 12px;
    border: 1px solid rgba(212,168,83,0.3);
    border-radius: 4px;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* --- Overview Section --- */
.overview {
    background: linear-gradient(180deg, var(--bg-dark) 0%, #091525 100%);
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.overview-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem 2rem;
    transition: var(--transition);
    text-align: center;
    backdrop-filter: blur(10px);
}

.overview-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    color: var(--accent);
}

.card-icon svg {
    width: 100%;
    height: 100%;
}

.overview-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: #fff;
}

.overview-card p {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* --- HALO Section --- */
.halo {
    background: var(--primary);
    position: relative;
    overflow: hidden;
}

.halo::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(212,168,83,0.04) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(30%, -30%);
}

.halo-intro {
    margin-bottom: 3rem;
}

.halo-definition {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.halo-acronym {
    display: flex;
    gap: 0.75rem;
}

.halo-letter {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--accent);
    border: 2px solid var(--accent);
    border-radius: 12px;
    background: rgba(212,168,83,0.06);
    transition: var(--transition);
}

.halo-letter:hover {
    background: rgba(212,168,83,0.15);
    transform: translateY(-3px);
}

.halo-full p {
    font-size: 1.3rem;
    color: #fff;
}

.halo-full .halo-note {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.3rem;
}

.halo-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.halo-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    transition: var(--transition);
}

.halo-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
    transform: translateY(-3px);
}

.halo-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    color: var(--accent);
}

.halo-card-header svg {
    width: 36px;
    height: 36px;
}

.halo-card-num {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent);
}

.halo-card p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.65;
}

.halo-conclusion {
    text-align: center;
    position: relative;
    padding-top: 1.5rem;
}

.conclusion-line {
    width: 60px;
    height: 2px;
    background: var(--accent);
    margin: 0 auto 1.5rem;
}

.halo-conclusion p {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-light);
    letter-spacing: 0.03em;
}

/* --- FFS Section --- */
.ffs {
    background: linear-gradient(180deg, #091525 0%, var(--bg-dark) 100%);
}

.ffs-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.ffs-illustration {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    color: var(--accent);
}

.ffs-photo {
    width: 100%;
    max-width: 380px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    display: block;
    margin: 0 auto;
}

.ffs-info-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.ffs-info-card h3 {
    font-size: 1.2rem;
    color: #fff;
    margin-bottom: 0.75rem;
}

.ffs-info-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

.ffs-features {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.ffs-feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.feature-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    flex-shrink: 0;
}

/* --- Market Section --- */
.market {
    background: var(--bg-dark);
}

.market-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.market-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: var(--transition);
}

.market-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-3px);
}

.market-card-visual {
    margin-bottom: 1.5rem;
    padding: 1.5rem;
    background: rgba(0,0,0,0.2);
    border-radius: var(--radius-sm);
}

.market-chart {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 1.5rem;
    height: 100px;
}

.chart-bar {
    width: 40px;
    background: linear-gradient(180deg, var(--accent) 0%, rgba(212,168,83,0.2) 100%);
    border-radius: 6px 6px 0 0;
    position: relative;
    transition: var(--transition);
}

.chart-bar:hover {
    background: linear-gradient(180deg, var(--accent-light) 0%, rgba(212,168,83,0.4) 100%);
}

.chart-bar span {
    position: absolute;
    bottom: -28px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.cost-comparison {
    text-align: center;
}

.cost-item {
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    margin: 0.5rem 0;
}

.cost-item.new {
    background: rgba(212,168,83,0.1);
    border: 1px solid rgba(212,168,83,0.2);
}

.cost-item.used {
    background: rgba(100,200,150,0.1);
    border: 1px solid rgba(100,200,150,0.2);
}

.cost-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.cost-value {
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
}

.cost-vs {
    font-size: 0.75rem;
    color: var(--accent);
    font-weight: 700;
    margin: 0.5rem 0;
}

.cost-note {
    font-size: 0.8rem;
    color: var(--accent-light);
    margin-top: 0.75rem;
}

.demand-ring {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto;
    color: var(--accent);
}

.ring-text {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 0.85rem;
    font-weight: 600;
    color: #fff;
    line-height: 1.3;
}

.market-card h3 {
    font-size: 1.1rem;
    color: #fff;
    margin-bottom: 0.5rem;
}

.market-card > p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.65;
}

/* --- Business Section --- */
.business {
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--primary) 100%);
    position: relative;
    overflow: hidden;
}

.business-flow {
    margin-bottom: 3rem;
    overflow-x: auto;
    padding-bottom: 1rem;
}

.flow-track {
    display: flex;
    gap: 1.5rem;
    min-width: min-content;
    justify-content: center;
    flex-wrap: wrap;
}

.flow-step {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    text-align: center;
    width: 190px;
    transition: var(--transition);
    position: relative;
}

.flow-step:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
    transform: translateY(-4px);
}

.flow-step::after {
    content: '→';
    position: absolute;
    right: -1.2rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent);
    font-size: 1.2rem;
    font-weight: 700;
}

.flow-step:last-child::after {
    display: none;
}

.flow-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 1rem;
    color: var(--accent);
}

.flow-icon svg {
    width: 100%;
    height: 100%;
}

.flow-step h4 {
    font-size: 0.95rem;
    color: #fff;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.flow-step p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.business-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.business-detail-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: var(--transition);
}

.business-detail-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
}

.business-detail-card h3 {
    font-size: 1.1rem;
    color: var(--accent);
    margin-bottom: 0.75rem;
}

.business-detail-card p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.65;
    margin-bottom: 1rem;
}

.business-detail-card ul {
    list-style: none;
    padding: 0;
}

.business-detail-card ul li {
    font-size: 0.83rem;
    color: var(--text-muted);
    padding: 0.35rem 0;
    padding-left: 1rem;
    position: relative;
}

.business-detail-card ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 5px;
    background: var(--accent);
    border-radius: 50%;
}

/* --- Team Section --- */
.team {
    background: var(--primary);
}

.team-highlight {
    margin-bottom: 3rem;
}

.team-leader {
    background: var(--bg-card);
    border: 1px solid rgba(212,168,83,0.2);
    border-radius: var(--radius);
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.leader-avatar {
    flex-shrink: 0;
}

.avatar-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary);
}

.leader-edu {
    font-size: 0.85rem;
    color: var(--accent-light);
    margin-bottom: 0.5rem;
}

.leader-exp {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.team-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    transition: var(--transition);
    text-align: center;
}

.team-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-3px);
}

.team-card-avatar {
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    color: var(--accent);
    border-radius: 50%;
    overflow: hidden;
}

.team-card-avatar svg {
    width: 100%;
    height: 100%;
}

.team-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-card h4 {
    font-size: 1rem;
    color: #fff;
    margin-bottom: 0.25rem;
}

.team-role {
    font-size: 0.8rem;
    color: var(--accent);
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.team-desc {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.team-architecture {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 900px;
    margin: 0 auto;
}

.arch-item {
    background: rgba(212,168,83,0.06);
    border: 1px solid rgba(212,168,83,0.15);
    border-radius: var(--radius-sm);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.arch-label {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.arch-item span:last-child {
    font-size: 0.88rem;
    color: var(--text-muted);
}

/* --- Cases Section --- */
.cases {
    background: linear-gradient(180deg, var(--primary) 0%, var(--bg-dark) 100%);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.case-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.case-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.case-image {
    position: relative;
    height: 160px;
    background: rgba(0,0,0,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    overflow: hidden;
}

.case-illustration {
    width: 100%;
    height: 100%;
}

.case-illustration svg {
    width: 100%;
    height: 100%;
}

.case-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.case-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    padding: 3px 10px;
    background: rgba(212,168,83,0.15);
    border: 1px solid rgba(212,168,83,0.3);
    border-radius: 4px;
    font-size: 0.7rem;
    color: var(--accent);
    font-weight: 600;
}

.case-badge.fs {
    background: rgba(100,180,220,0.15);
    border-color: rgba(100,180,220,0.3);
    color: #7bb8dd;
}

.case-info {
    padding: 1.25rem;
}

.case-info h3 {
    font-size: 1rem;
    color: #fff;
    margin-bottom: 0.5rem;
}

.case-specs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.case-specs span {
    font-size: 0.72rem;
    color: var(--text-muted);
    padding: 2px 8px;
    background: rgba(255,255,255,0.04);
    border-radius: 3px;
}

.case-location {
    font-size: 0.8rem;
    color: var(--accent-light);
}

/* --- Strategy Section --- */
.strategy {
    background: var(--bg-dark);
    padding-bottom: 8rem;
}

.strategy-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.strategy-item {
    text-align: center;
    padding: 2rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: var(--transition);
}

.strategy-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
    transform: translateY(-4px);
}

.strategy-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 1.25rem;
    color: var(--accent);
}

.strategy-icon svg {
    width: 100%;
    height: 100%;
}

.strategy-item h3 {
    font-size: 1.05rem;
    color: #fff;
    margin-bottom: 0.5rem;
}

.strategy-item p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* --- Footer --- */
.footer {
    background: #040b18;
    border-top: 1px solid var(--border);
    padding: 4rem 2rem 2rem;
}

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

.footer-brand {
    margin-bottom: 2rem;
}

.footer-brand .logo {
    margin-bottom: 0.75rem;
}

.footer-brand > p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-info {
    display: flex;
    gap: 4rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.footer-col h4 {
    font-size: 0.85rem;
    color: var(--accent);
    margin-bottom: 0.75rem;
    letter-spacing: 0.05em;
}

.footer-col p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
}

.footer-bottom {
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* --- Animations --- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* --- Responsive --- */
@media (max-width: 1024px) {
    .nav-links {
        gap: 1.1rem;
    }

    .overview-grid,
    .market-grid,
    .business-details {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

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

    .ffs-showcase {
        grid-template-columns: 1fr;
    }

    .ffs-3d-illustration {
        max-width: 300px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 4rem 1.25rem;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 84px;
        left: 0;
        right: 0;
        background: rgba(6,15,30,0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1rem;
        border-bottom: 1px solid var(--border);
    }

    .nav-links.open {
        display: flex;
    }

    .menu-toggle {
        display: flex;
    }

    .hero-stats {
        gap: 1.5rem;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .overview-grid,
    .market-grid,
    .business-details,
    .halo-grid,
    .cases-grid,
    .strategy-timeline,
    .team-grid {
        grid-template-columns: 1fr;
    }

    .team-leader {
        flex-direction: column;
        text-align: center;
    }

    .flow-track {
        flex-direction: column;
        align-items: center;
    }

    .flow-step::after {
        content: '↓';
        right: 50%;
        top: auto;
        bottom: -1.5rem;
        transform: translateX(50%);
    }

    .flow-step:last-child::after {
        display: none;
    }

    .footer-info {
        flex-direction: column;
        gap: 1.5rem;
    }
}

/* --- Custom Scrollbar --- */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-light);
}