/* ============================================
   YICHU TECH — Industrial Noir Design System
   ============================================ */

/* --- CSS Variables --- */
:root {
    --bg-primary: #0D0D0D;
    --bg-secondary: #141414;
    --bg-card: #1A1A1A;
    --bg-elevated: #1E1E1E;
    --border: #2A2A2A;
    --border-light: #333333;
    --titanium: #C0C0C0;
    --silver-light: #8A8A8A;
    --silver-dark: #555555;
    --red: #FF2D2D;
    --red-dim: #CC2424;
    --red-glow: rgba(255, 45, 45, 0.15);
    --red-glow-strong: rgba(255, 45, 45, 0.3);
    --white: #FFFFFF;
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--titanium);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.mono {
    font-family: var(--font-mono);
}

.accent {
    color: var(--red);
}

.accent-text {
    color: var(--red);
}

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

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13, 13, 13, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease, background 0.3s ease;
}

.nav.scrolled {
    border-bottom-color: var(--border);
    background: rgba(13, 13, 13, 0.95);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    height: 72px;
}

.nav-logo-group {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    margin-right: 64px;
    gap: 16px;
}

.nav-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    overflow: visible !important;
}

.nav-logo-img {
    height: 18px;
    width: auto;
    transition: opacity 0.3s ease;
    opacity: 0.88;
    overflow: visible !important;
}

.nav-logo:hover .nav-logo-img {
    opacity: 1;
}

.nav-tm-block {
    display: flex;
    flex-direction: column;
    gap: 2px;
    border-left: 1px solid var(--red);
    padding-left: 16px;
}

.nav-tm-name {
    font-size: 13px;
    letter-spacing: 3px;
    color: var(--white);
    font-weight: 700;
    text-transform: uppercase;
}

.nav-tm-desc {
    font-size: 9px;
    letter-spacing: 2px;
    color: var(--titanium);
    text-transform: uppercase;
}

.accent-silver {
    color: #E5E5E5;
    text-shadow: 0 0 20px rgba(229, 229, 229, 0.15);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
    white-space: nowrap;
    margin-left: auto;
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--silver-light);
    transition: color 0.3s ease;
    position: relative;
    white-space: nowrap;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--red);
    transition: width 0.3s var(--ease-out);
}

.nav-link:hover {
    color: var(--white);
}

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

.nav-link-cta {
    color: var(--red);
    border: 1px solid var(--red);
    padding: 8px 20px;
    border-radius: 2px;
    transition: background 0.3s ease, color 0.3s ease;
}

.nav-link-cta::after {
    display: none;
}

.nav-link-cta:hover {
    background: var(--red);
    color: var(--white);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--titanium);
    transition: all 0.3s ease;
}

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

.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: auto;
}

.hero-image-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0.25;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(13,13,13,0.4) 0%, rgba(13,13,13,0.7) 60%, var(--bg-primary) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 5;
    text-align: center;
    padding: 120px 24px 80px;
    max-width: 900px;
    pointer-events: none;
}

.hero-content * {
    pointer-events: auto;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    opacity: 0;
    animation: fadeInUp 0.8s var(--ease-out) 0.2s forwards;
}

.hero-tm-badge {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 32px;
    padding: 10px 28px;
    border: 1px solid var(--red);
    border-radius: 2px;
    background: rgba(255, 45, 45, 0.06);
    opacity: 0;
    animation: fadeInUp 0.8s var(--ease-out) 0.3s forwards;
}

.hero-tm-name {
    font-family: var(--font-heading);
    font-size: 16px;
    letter-spacing: 4px;
    color: var(--white);
    font-weight: 700;
}

.hero-tm-sep {
    color: var(--red);
    font-size: 8px;
}

.hero-tm-desc {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--titanium);
}

.tag-dot {
    width: 8px;
    height: 8px;
    background: var(--red);
    border-radius: 50%;
    display: inline-block;
    animation: pulse 2s ease-in-out infinite;
    box-shadow: 0 0 12px var(--red-glow-strong);
}

.tag-text {
    font-size: 11px;
    letter-spacing: 3px;
    color: var(--silver-light);
    text-transform: uppercase;
}

.hero-title {
    font-family: var(--font-heading);
    font-weight: 800;
    line-height: 0.95;
    margin-bottom: 24px;
}

.title-line {
    display: block;
    opacity: 0;
}

.title-line-1 {
    font-size: clamp(36px, 7vw, 82px);
    color: var(--titanium);
    letter-spacing: 10px;
    animation: fadeInUp 0.8s var(--ease-out) 0.4s forwards;
    text-shadow: 0 0 40px rgba(229, 229, 229, 0.06);
}

.title-line-2 {
    font-size: clamp(60px, 12vw, 140px);
    color: var(--red);
    letter-spacing: 16px;
    animation: fadeInUp 0.8s var(--ease-out) 0.6s forwards;
    text-shadow: 0 0 80px var(--red-glow-strong);
}

.hero-subtitle {
    font-family: var(--font-body);
    font-size: clamp(16px, 2.5vw, 22px);
    font-weight: 300;
    color: var(--titanium);
    margin-bottom: 12px;
    letter-spacing: 1px;
    opacity: 0;
    animation: fadeInUp 0.8s var(--ease-out) 0.8s forwards;
}

.hero-desc {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 2px;
    color: var(--silver-light);
    text-transform: uppercase;
    margin-bottom: 40px;
    opacity: 0;
    animation: fadeInUp 0.8s var(--ease-out) 1s forwards;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
    opacity: 0;
    animation: fadeInUp 0.8s var(--ease-out) 1.2s forwards;
}

.hero-stats {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    opacity: 0;
    animation: fadeInUp 0.8s var(--ease-out) 1.4s forwards;
    background: rgba(26, 26, 26, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 24px 40px;
    margin: 0 auto;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: var(--white);
    line-height: 1.2;
}

.stat-unit {
    font-size: 16px;
    color: var(--red);
    font-weight: 500;
}

.stat-label {
    font-size: 10px;
    letter-spacing: 1.5px;
    color: var(--silver-light);
    text-transform: uppercase;
    margin-top: 4px;
    display: block;
}

.stat-divider {
    width: 1px;
    height: 48px;
    background: linear-gradient(180deg, transparent, var(--border-light), transparent);
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 5;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    opacity: 0;
    animation: fadeInUp 0.8s var(--ease-out) 1.6s forwards;
}

.scroll-text {
    font-size: 10px;
    letter-spacing: 3px;
    color: var(--silver-dark);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, var(--red), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    padding: 14px 28px;
    border-radius: 2px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--red);
    color: var(--white);
    box-shadow: 0 0 24px var(--red-glow), 0 4px 16px rgba(0,0,0,0.3);
}

.btn-primary:hover {
    background: #FF4444;
    box-shadow: 0 0 40px var(--red-glow-strong), 0 8px 24px rgba(0,0,0,0.4);
    transform: translateY(-2px);
    color: var(--white);
}

.btn-secondary {
    background: transparent;
    color: var(--titanium);
    border: 1px solid var(--border-light);
}

.btn-secondary:hover {
    border-color: var(--titanium);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 18px 36px;
    font-size: 13px;
}

/* --- Section Common --- */
.section {
    padding: 120px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 11px;
    letter-spacing: 3px;
    color: var(--silver-light);
    text-transform: uppercase;
    margin-bottom: 20px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    color: var(--white);
    letter-spacing: 2px;
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 16px;
    color: var(--silver-light);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* --- Assets Section --- */
.section-assets {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.assets-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.asset-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
    transition: transform 0.4s var(--ease-out), box-shadow 0.4s ease;
}

.asset-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 40px var(--red-glow);
}

.card-accent-top {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--red), transparent);
    z-index: 2;
}

/* HUD Corners */
.card-corner {
    position: absolute;
    width: 20px;
    height: 20px;
    z-index: 2;
    opacity: 0.4;
    transition: opacity 0.3s ease;
}

.asset-card:hover .card-corner,
.patent-card:hover .card-corner {
    opacity: 1;
}

.card-corner-tl {
    top: 8px;
    left: 8px;
    border-top: 2px solid var(--red);
    border-left: 2px solid var(--red);
}

.card-corner-tr {
    top: 8px;
    right: 8px;
    border-top: 2px solid var(--red);
    border-right: 2px solid var(--red);
}

.card-corner-bl {
    bottom: 8px;
    left: 8px;
    border-bottom: 2px solid var(--red);
    border-left: 2px solid var(--red);
}

.card-corner-br {
    bottom: 8px;
    right: 8px;
    border-bottom: 2px solid var(--red);
    border-right: 2px solid var(--red);
}

.card-image {
    position: relative;
    height: 280px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--ease-out);
}

.asset-card:hover .card-image img {
    transform: scale(1.05);
}

.card-image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(0deg, var(--bg-card) 0%, transparent 100%);
}

.card-body {
    padding: 28px 32px 36px;
}

.card-tag {
    font-size: 10px;
    letter-spacing: 2.5px;
    color: var(--red);
    text-transform: uppercase;
    display: block;
    margin-bottom: 12px;
}

.card-title {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 600;
    color: var(--white);
    letter-spacing: 1px;
    line-height: 1.3;
    margin-bottom: 14px;
}

.card-desc {
    font-size: 14px;
    color: var(--silver-light);
    line-height: 1.7;
    margin-bottom: 24px;
}

.card-specs {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

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

.spec-icon {
    color: var(--red);
    font-size: 8px;
    flex-shrink: 0;
}

.spec-text {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.5px;
    color: var(--titanium);
}

/* --- Patent Section --- */
.section-patent {
    background: var(--bg-primary);
    overflow: hidden;
    border-top: 1px solid var(--border);
}

.patent-card {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.patent-card-inner {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 48px;
    position: relative;
    overflow: hidden;
    transition: box-shadow 0.4s ease;
}

.patent-card:hover .patent-card-inner {
    box-shadow: 0 0 80px var(--red-glow), 0 20px 60px rgba(0,0,0,0.4);
}

.patent-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, var(--red-glow) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.6s ease;
    pointer-events: none;
}

.patent-card:hover .patent-glow {
    opacity: 1;
}

.patent-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 12px;
}

.patent-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--red);
    text-transform: uppercase;
}

.patent-number {
    font-size: 11px;
    letter-spacing: 1px;
    color: var(--silver-light);
    background: rgba(255, 45, 45, 0.08);
    padding: 6px 14px;
    border: 1px solid rgba(255, 45, 45, 0.2);
    border-radius: 2px;
}

.patent-title {
    font-family: var(--font-heading);
    font-size: 52px;
    font-weight: 800;
    color: var(--white);
    letter-spacing: 6px;
    margin-bottom: 8px;
    text-shadow: 0 0 40px var(--red-glow);
}

.patent-subtitle {
    font-size: 16px;
    color: var(--titanium);
    margin-bottom: 20px;
}

.patent-desc {
    font-size: 14px;
    color: var(--silver-light);
    line-height: 1.8;
    margin-bottom: 32px;
}

.patent-specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 36px;
}

.patent-spec {
    padding: 18px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: 2px;
    transition: border-color 0.3s ease;
}

.patent-spec:hover {
    border-color: rgba(255, 45, 45, 0.3);
}

.patent-spec-label {
    display: block;
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--silver-dark);
    text-transform: uppercase;
    margin-bottom: 6px;
}

.patent-spec-value {
    font-size: 14px;
    color: var(--white);
    font-weight: 500;
    letter-spacing: 0.5px;
}

.patent-footer {
    text-align: center;
    padding-top: 8px;
}

/* --- Ecosystem Section --- */
.section-ecosystem {
    background: var(--bg-secondary);
    overflow: hidden;
    border-top: 1px solid var(--border);
}

.ecosystem-visual {
    position: relative;
    height: 380px;
    margin-bottom: 64px;
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.ecosystem-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.ecosystem-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.5;
}

.ecosystem-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, rgba(13,13,13,0.3) 20%, var(--bg-secondary) 80%);
    z-index: 1;
}

.ecosystem-nodes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
}

.eco-connections {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.eco-line {
    stroke: var(--red);
    stroke-width: 1.5;
    stroke-dasharray: 8 4;
    opacity: 0.6;
    animation: dashMove 3s linear infinite;
}

.eco-node {
    position: absolute;
    text-align: center;
}

.eco-node-center {
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.eco-node-left {
    left: 18%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.eco-node-right {
    right: 18%;
    top: 50%;
    transform: translate(50%, -50%);
}

.eco-node-ring {
    width: 110px;
    height: 110px;
    border: 1.5px solid var(--red);
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.3;
    animation: ringPulse 3s ease-in-out infinite;
}

.eco-node-center .eco-node-ring {
    width: 130px;
    height: 130px;
    border-color: var(--red);
    opacity: 0.5;
}

.eco-node-inner {
    position: relative;
    z-index: 1;
    background: rgba(13, 13, 13, 0.92);
    border: 1px solid var(--border-light);
    padding: 18px 28px;
    border-radius: 4px;
    backdrop-filter: blur(10px);
}

.eco-node-center .eco-node-inner {
    border-color: var(--red);
    box-shadow: 0 0 30px var(--red-glow), 0 0 60px rgba(255, 45, 45, 0.08);
}

.eco-node-label {
    display: block;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--white);
}

.eco-node-center .eco-node-label {
    color: var(--red);
    font-size: 15px;
}

.eco-node-sub {
    display: block;
    font-size: 11px;
    color: var(--silver-light);
    margin-top: 4px;
}

.ecosystem-pillars {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.pillar {
    text-align: center;
    padding: 36px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 4px;
    transition: transform 0.3s var(--ease-out), box-shadow 0.3s ease, border-color 0.3s ease;
}

.pillar:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.3);
    border-color: rgba(255, 45, 45, 0.2);
}

.pillar-icon {
    margin-bottom: 20px;
    display: inline-block;
}

.pillar-title {
    font-family: var(--font-heading);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1.5px;
    color: var(--white);
    margin-bottom: 12px;
    text-transform: uppercase;
}

.pillar-desc {
    font-size: 13px;
    color: var(--silver-light);
    line-height: 1.7;
}

/* --- About Section --- */
.section-about {
    background: #0A0A0A;
    border-top: 1px solid var(--border);
}

.about-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 64px;
    align-items: start;
}

.about-lead {
    font-size: 18px;
    color: var(--white);
    line-height: 1.7;
    margin-bottom: 20px;
}

.about-lead strong {
    color: var(--red);
}

.about-text p {
    font-size: 15px;
    color: var(--silver-light);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-text em {
    color: var(--titanium);
    font-style: normal;
    font-weight: 500;
}

.about-text strong {
    color: var(--white);
    font-weight: 600;
}

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

.about-stat-card {
    background: transparent;
    border: 0.5px solid rgba(192, 192, 192, 0.12);
    border-radius: 2px;
    padding: 24px 20px;
    text-align: center;
    transition: border-color 0.3s ease, background 0.3s ease;
}

.about-stat-card:hover {
    border-color: rgba(192, 192, 192, 0.3);
    background: rgba(192, 192, 192, 0.02);
}

.about-stat-value {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
}

.stat-unit-sm {
    font-size: 14px;
    color: var(--red);
}

.about-stat-label {
    font-size: 11px;
    letter-spacing: 1.5px;
    color: var(--silver-light);
    text-transform: uppercase;
}

/* --- Footer --- */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 80px 0 40px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 64px;
    margin-bottom: 60px;
}

.footer-tagline {
    font-size: 14px;
    color: var(--titanium);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.footer-desc {
    font-size: 11px;
    letter-spacing: 1px;
    color: var(--silver-dark);
    line-height: 1.8;
}

.footer-links-group {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-col-title {
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--red);
    margin-bottom: 20px;
    text-transform: uppercase;
}

.footer-link {
    display: block;
    font-size: 13px;
    color: var(--silver-light);
    margin-bottom: 12px;
    transition: color 0.3s ease, padding-left 0.3s ease;
}

.footer-link:hover {
    color: var(--white);
    padding-left: 4px;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 32px;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
    gap: 12px 32px;
    text-align: center;
}

.footer-copy {
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--silver-dark);
}

.footer-legal {
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--silver-dark);
}

.footer-trademark {
    font-size: 11px;
    letter-spacing: 1.5px;
    color: var(--titanium);
    width: 100%;
    text-align: center;
    padding-top: 16px;
    margin-top: 12px;
    border-top: 1px solid var(--border-light);
}

/* --- Strategic Asset Card — Precision Matrix Blueprint --- */
.section-card {
    background: #0A0A0A;
    border-top: 1px solid var(--border);
}

.matrix {
    max-width: 860px;
    margin: 0 auto;
    border: 0.5px solid rgba(192, 192, 192, 0.15);
    border-radius: 2px;
    position: relative;
    transition: border-color 0.4s ease;
}

.matrix:hover {
    border-color: rgba(192, 192, 192, 0.3);
}

.matrix-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 32px 40px;
}

.matrix-logo-group {
    display: flex;
    align-items: center;
    gap: 20px;
}

.matrix-logo {
    height: 36px;
    width: auto;
    opacity: 0.9;
    overflow: visible !important;
}

.matrix-brand-block {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.matrix-brand-zh {
    font-size: 14px;
    letter-spacing: 4px;
    color: #E5E5E5;
}

.matrix-brand-en {
    font-size: 9px;
    letter-spacing: 3px;
    color: var(--silver-dark);
    text-transform: uppercase;
}

.matrix-tm-block {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
}

.matrix-tm-name {
    font-size: 11px;
    letter-spacing: 3px;
    color: var(--white);
    font-weight: 700;
}

.matrix-tm-desc {
    font-size: 8px;
    letter-spacing: 2px;
    color: var(--silver-dark);
    text-transform: uppercase;
}

.matrix-rule {
    height: 0.5px;
    background: linear-gradient(90deg, transparent, rgba(192, 192, 192, 0.2), transparent);
}

.matrix-body {
    padding: 24px 40px;
}

.matrix-row {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 0.5px solid rgba(192, 192, 192, 0.06);
    transition: background 0.3s ease;
}

.matrix-row:last-child {
    border-bottom: none;
}

.matrix-row:hover {
    background: rgba(192, 192, 192, 0.02);
}

.matrix-label {
    font-size: 9px;
    letter-spacing: 2px;
    color: var(--silver-dark);
    text-transform: uppercase;
    flex-shrink: 0;
    width: 90px;
}

.matrix-dots {
    flex: 1;
    border-bottom: 0.5px dotted rgba(192, 192, 192, 0.12);
    min-width: 20px;
    margin-bottom: 4px;
}

.matrix-value {
    font-size: 12px;
    color: var(--titanium);
    letter-spacing: 0.5px;
    flex-shrink: 0;
    white-space: nowrap;
}

.matrix-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 16px 40px;
    font-size: 9px;
    letter-spacing: 2px;
    color: var(--silver-dark);
    text-transform: uppercase;
}

.matrix-sep {
    color: rgba(192, 192, 192, 0.25);
    font-size: 5px;
}

/* --- Precision Components Section — Black-Gold Industrial --- */
.section-precision {
    background: #0A0A0A;
    border-top: 1px solid var(--border);
    position: relative;
}

.section-precision::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #D4AF37, transparent);
    opacity: 0.3;
}

.accent-gold {
    color: #D4AF37;
    text-shadow: 0 0 20px rgba(212, 175, 55, 0.15);
}

.precision-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.precision-block {
    background: linear-gradient(180deg, #111111 0%, #0D0D0D 100%);
    border: 1px solid #2A2A2A;
    border-radius: 4px;
    padding: 28px 24px;
    position: relative;
    overflow: hidden;
    transition: transform 0.4s var(--ease-out), box-shadow 0.4s ease, border-color 0.4s ease;
}

.precision-block:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(0,0,0,0.5), 0 0 30px rgba(212, 175, 55, 0.08);
    border-color: rgba(212, 175, 55, 0.3);
}

.precision-block-accent {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #D4AF37, transparent);
    opacity: 0.6;
}

.precision-block-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.precision-block-tag {
    font-size: 9px;
    letter-spacing: 2px;
    color: #D4AF37;
    text-transform: uppercase;
}

.precision-block-value {
    display: flex;
    align-items: baseline;
    gap: 6px;
    margin-bottom: 16px;
}

.precision-value-main {
    font-family: var(--font-heading);
    font-size: 32px;
    font-weight: 800;
    color: #E5E5E5;
    letter-spacing: 2px;
    line-height: 1;
}

.precision-value-unit {
    font-family: var(--font-mono);
    font-size: 14px;
    color: #D4AF37;
    font-weight: 500;
    letter-spacing: 1px;
}

.precision-block-bar {
    width: 100%;
    height: 3px;
    background: #1A1A1A;
    border-radius: 2px;
    margin-bottom: 16px;
    overflow: hidden;
}

.precision-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #D4AF37, #F5D76E);
    border-radius: 2px;
    transition: width 1.2s var(--ease-out);
}

.precision-block-desc {
    font-size: 12px;
    color: var(--silver-light);
    line-height: 1.7;
    letter-spacing: 0.3px;
}

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

.precision-footer-inner {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    padding: 14px 32px;
    border: 1px solid #2A2A2A;
    border-radius: 2px;
    background: rgba(212, 175, 55, 0.03);
}

.precision-footer-tag {
    font-size: 9px;
    letter-spacing: 2px;
    color: var(--silver-light);
    text-transform: uppercase;
}

.precision-footer-sep {
    color: #D4AF37;
    font-size: 6px;
    opacity: 0.6;
}

/* --- Titanium Silver Accent Overrides for Asset Cards --- */
.asset-card .card-accent-top {
    background: linear-gradient(90deg, transparent, #E5E5E5, transparent);
}

.asset-card:hover {
    box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 40px rgba(229, 229, 229, 0.06);
}

.about-stat-card:hover {
    border-color: rgba(192, 192, 192, 0.35);
    background: rgba(192, 192, 192, 0.03);
}

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

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

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

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 12px var(--red-glow-strong); }
    50% { opacity: 0.4; box-shadow: 0 0 4px var(--red-glow); }
}

@keyframes scrollPulse {
    0%, 100% { opacity: 1; transform: scaleY(1); }
    50% { opacity: 0.5; transform: scaleY(0.6); }
}

@keyframes ringPulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.3; }
    50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.1; }
}

@keyframes dashMove {
    from { stroke-dashoffset: 0; }
    to { stroke-dashoffset: -24; }
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .assets-grid {
        grid-template-columns: 1fr;
    }

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

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

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

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

    .matrix-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        padding: 24px 28px;
    }

    .matrix-tm-block {
        align-items: flex-start;
    }

    .matrix-body {
        padding: 20px 28px;
    }

    .matrix-footer {
        padding: 14px 28px;
        flex-wrap: wrap;
        gap: 8px;
    }
}

@media (max-width: 768px) {
    .nav-logo-group {
        margin-right: 0;
    }

    .nav-logo-img {
        height: 32px;
    }

    .nav-tm-block {
        display: none;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(13, 13, 13, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
        white-space: nowrap;
    }

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

    .nav-toggle {
        display: flex;
    }

    .hero-content {
        padding: 100px 20px 60px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
        padding: 20px 24px;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    .patent-card-inner {
        padding: 28px 20px;
    }

    .patent-title {
        font-size: 36px;
        letter-spacing: 3px;
    }

    .patent-specs-grid {
        grid-template-columns: 1fr;
    }

    .ecosystem-visual {
        height: 280px;
    }

    .eco-node-left {
        left: 10%;
    }

    .eco-node-right {
        right: 10%;
    }

    .eco-node-inner {
        padding: 12px 16px;
    }

    .eco-node-label {
        font-size: 10px;
    }

    .eco-node-sub {
        font-size: 9px;
    }

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

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

    .precision-value-main {
        font-size: 26px;
    }

    .precision-footer-inner {
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
        padding: 12px 16px;
    }

    .matrix-row {
        flex-wrap: wrap;
        gap: 6px;
    }

    .matrix-dots {
        display: none;
    }

    .matrix-value {
        width: 100%;
        padding-left: 90px;
    }

    .matrix-header {
        padding: 20px 20px;
    }

    .matrix-body {
        padding: 16px 20px;
    }

    .matrix-footer {
        padding: 12px 20px;
        font-size: 8px;
    }

    .footer-links-group {
        grid-template-columns: 1fr;
        gap: 24px;
    }

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

    .section {
        padding: 80px 0;
    }
}

@media (max-width: 480px) {
    .eco-node-left,
    .eco-node-right {
        display: none;
    }

    .eco-connections {
        display: none;
    }

    .assets-grid {
        gap: 20px;
    }

    .card-body {
        padding: 20px;
    }

    .card-image {
        height: 200px;
    }

    .btn {
        padding: 12px 20px;
        font-size: 11px;
    }

    .btn-lg {
        padding: 14px 24px;
    }
}
svg { overflow: visible !important; }