/* =============================================
   Beijing Jingrui Xinyuan Technology Co., Ltd
   Main Stylesheet - Tesla Inspired Design
   ============================================= */

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

:root {
    --color-primary: #ffffff;
    --color-secondary: #171a20;
    --color-accent: #cc0000;
    --color-accent-hover: #e62117;
    --color-text: #393c41;
    --color-text-light: #5c5e62;
    --color-bg: #ffffff;
    --color-bg-dark: #000000;
    --color-bg-gray: #f4f4f4;
    --color-border: #d0d1d2;
    --color-overlay: rgba(0, 0, 0, 0.5);

    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);

    --max-width: 1200px;
    --header-height: 64px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.16);
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.5;
    overflow-x: hidden;
    min-height: 100vh;
}

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

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

button {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

ul,
ol {
    list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-secondary);
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h4 { font-size: clamp(1.25rem, 2vw, 1.75rem); }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
}

.text-center { text-align: center; }
.text-uppercase { text-transform: uppercase; }

/* Layout */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
    position: relative;
}

.section-sm {
    padding: 60px 0;
}

.section-lg {
    padding: 140px 0;
}

.section-dark {
    background: var(--color-bg-dark);
    color: var(--color-primary);
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 {
    color: var(--color-primary);
}

.section-gray {
    background: var(--color-bg-gray);
}

.grid {
    display: grid;
    gap: 32px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 992px) {
    .grid-2,
    .grid-3,
    .grid-4 { grid-template-columns: 1fr; }
}

/* Header / Navigation */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all var(--transition-base);
}

.site-header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--color-secondary);
    letter-spacing: -0.01em;
}

.brand-logo {
    width: 32px;
    height: 32px;
    transition: transform var(--transition-base);
}

.brand:hover .brand-logo {
    transform: rotate(180deg);
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.brand-name {
    font-size: 0.95rem;
    font-weight: 700;
}

.brand-tagline {
    font-size: 0.7rem;
    color: var(--color-text-light);
    font-weight: 400;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-list {
    display: flex;
    gap: 4px;
}

.nav-link {
    display: inline-block;
    padding: 8px 16px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-secondary);
    border-radius: 4px;
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 2px;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: all var(--transition-base);
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 60%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent);
}

.header-cta {
    margin-left: 16px;
    padding: 8px 20px;
    background: var(--color-secondary);
    color: var(--color-primary);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.header-cta:hover {
    background: var(--color-accent);
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    width: 32px;
    height: 32px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--color-secondary);
    transition: all var(--transition-base);
    border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 992px) {
    .nav-toggle { display: flex; }
    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-primary);
        padding: 24px;
        gap: 0;
        transform: translateY(-150%);
        transition: transform var(--transition-base);
        box-shadow: var(--shadow-md);
        align-items: stretch;
    }
    .main-nav.active { transform: translateY(0); }
    .nav-list {
        flex-direction: column;
        gap: 0;
    }
    .nav-link {
        display: block;
        padding: 16px 8px;
        font-size: 1rem;
        border-bottom: 1px solid var(--color-border);
    }
    .nav-link::after { display: none; }
    .header-cta {
        margin: 16px 0 0;
        text-align: center;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    line-height: 1;
    border: 2px solid transparent;
    min-height: 48px;
}

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

.btn-primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(204, 0, 0, 0.3);
}

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

.btn-secondary:hover {
    background: transparent;
    color: var(--color-secondary);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--color-secondary);
    border-color: var(--color-secondary);
}

.btn-outline:hover {
    background: var(--color-secondary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.btn-outline-white {
    background: transparent;
    color: var(--color-primary);
    border-color: rgba(255, 255, 255, 0.6);
}

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

.btn-arrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 0;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-secondary);
    border-bottom: 1px solid var(--color-secondary);
    transition: all var(--transition-fast);
}

.btn-arrow:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
    gap: 12px;
}

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

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

.hero-bg svg,
.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg,
        rgba(0,0,0,0.4) 0%,
        rgba(0,0,0,0.2) 40%,
        rgba(0,0,0,0.6) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1000px;
    padding: 0 24px;
    animation: heroFadeIn 1.2s ease-out;
}

.hero-eyebrow {
    display: inline-block;
    padding: 6px 16px;
    margin-bottom: 24px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.hero-title {
    color: var(--color-primary);
    margin-bottom: 24px;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: clamp(1rem, 1.6vw, 1.25rem);
    color: rgba(255, 255, 255, 0.85);
    max-width: 720px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    color: var(--color-primary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    opacity: 0.7;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes heroFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-10px); }
}

/* Section Headers */
.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 80px;
}

.section-eyebrow {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-accent);
    margin-bottom: 16px;
}

.section-title {
    margin-bottom: 24px;
    font-weight: 700;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* Feature Cards */
.feature-card {
    background: var(--color-primary);
    padding: 40px 32px;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), transparent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(204, 0, 0, 0.08), rgba(204, 0, 0, 0.02));
    border-radius: 12px;
    transition: all var(--transition-base);
}

.feature-card:hover .feature-icon {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
    transform: scale(1.1) rotate(-5deg);
}

.feature-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-accent);
    transition: color var(--transition-base);
}

.feature-card:hover .feature-icon svg {
    color: var(--color-primary);
}

.feature-title {
    margin-bottom: 12px;
    font-size: 1.25rem;
    font-weight: 600;
}

.feature-description {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* App Showcase */
.apps-showcase {
    background: var(--color-bg-dark);
    color: var(--color-primary);
}

.app-card {
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 40px 32px;
    text-align: left;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.app-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
}

.app-card-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent), #ff4d4d);
    border-radius: 20px;
    box-shadow: 0 8px 24px rgba(204, 0, 0, 0.3);
}

.app-card-icon svg {
    width: 40px;
    height: 40px;
    color: var(--color-primary);
}

.app-card h3 {
    color: var(--color-primary);
    margin-bottom: 12px;
    font-size: 1.5rem;
}

.app-card p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.app-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
}

.app-tag {
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 100px;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.stat-item {
    padding: 20px;
}

.stat-number {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 8px;
    display: block;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

@media (max-width: 768px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Split Section (Image + Content) */
.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 80px;
}

.split-image {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 4 / 3;
}

.split-image img,
.split-image svg {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.split-content h2 {
    margin-bottom: 24px;
}

.split-content p {
    margin-bottom: 20px;
    color: var(--color-text-light);
    line-height: 1.7;
}

.split-content .btn {
    margin-top: 16px;
}

@media (max-width: 992px) {
    .split {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .split.reverse .split-image {
        order: -1;
    }
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    padding-bottom: 60px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -40px;
    top: 6px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 3px solid var(--color-accent);
    z-index: 1;
}

.timeline-year {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 8px;
}

.timeline-title {
    font-size: 1.25rem;
    margin-bottom: 8px;
    color: var(--color-secondary);
}

.timeline-content {
    color: var(--color-text-light);
    line-height: 1.7;
}

/* News */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.news-card {
    background: var(--color-primary);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.news-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: var(--color-bg-gray);
    overflow: hidden;
    position: relative;
}

.news-image svg,
.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.news-card:hover .news-image svg,
.news-card:hover .news-image img {
    transform: scale(1.05);
}

.news-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 12px;
    font-size: 0.75rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.news-meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.news-title {
    font-size: 1.125rem;
    margin-bottom: 12px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-secondary);
}

.news-excerpt {
    color: var(--color-text-light);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 20px;
    flex: 1;
}

.news-link {
    color: var(--color-accent);
    font-weight: 500;
    font-size: 0.875rem;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition-fast);
}

.news-link:hover {
    gap: 8px;
}

@media (max-width: 992px) {
    .news-grid { grid-template-columns: 1fr; }
}

/* Contact Form */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info-item {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    background: var(--color-bg-gray);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-accent);
}

.contact-info-item:hover .contact-icon {
    background: var(--color-accent);
}

.contact-info-item:hover .contact-icon svg {
    color: var(--color-primary);
}

.contact-info h4 {
    font-size: 1rem;
    margin-bottom: 4px;
    font-weight: 600;
}

.contact-info p,
.contact-info a {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

.contact-info a:hover {
    color: var(--color-accent);
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-secondary);
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 14px 16px;
    font-size: 0.95rem;
    font-family: inherit;
    background: var(--color-bg-gray);
    border: 1px solid transparent;
    border-radius: 8px;
    color: var(--color-secondary);
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    background: var(--color-primary);
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(204, 0, 0, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

@media (max-width: 992px) {
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}

/* Footer */
.site-footer {
    background: var(--color-bg-dark);
    color: var(--color-primary);
    padding: 80px 0 32px;
}

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

.footer-brand {
    max-width: 320px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    margin-top: 16px;
    line-height: 1.6;
}

.footer-heading {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85rem;
}

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

.footer-legal a {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85rem;
    transition: color var(--transition-fast);
}

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

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.social-link svg {
    width: 18px;
    height: 18px;
}

@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 600px) {
    .footer-grid { grid-template-columns: 1fr; }
}

/* Page Header (Sub-pages) */
.page-header {
    padding: calc(var(--header-height) + 100px) 0 80px;
    background: var(--color-bg-dark);
    color: var(--color-primary);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(204, 0, 0, 0.15), transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(204, 0, 0, 0.1), transparent 50%);
    z-index: 0;
}

.page-header > * {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    color: var(--color-primary);
    margin-bottom: 16px;
}

.page-header p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.125rem;
    max-width: 700px;
    margin: 0 auto;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 24px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--color-primary);
}

.breadcrumb .separator {
    color: rgba(255, 255, 255, 0.3);
}

/* Legal Pages */
.legal-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 80px 24px;
}

.legal-content h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 16px;
    color: var(--color-secondary);
}

.legal-content .legal-meta {
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-bottom: 60px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-border);
}

.legal-content h2 {
    font-size: 1.5rem;
    margin-top: 48px;
    margin-bottom: 16px;
    color: var(--color-secondary);
    font-weight: 600;
    padding-top: 16px;
}

.legal-content h3 {
    font-size: 1.15rem;
    margin-top: 32px;
    margin-bottom: 12px;
    color: var(--color-secondary);
    font-weight: 600;
}

.legal-content h4 {
    font-size: 1rem;
    margin-top: 20px;
    margin-bottom: 8px;
    color: var(--color-secondary);
    font-weight: 600;
}

.legal-content p {
    color: var(--color-text);
    line-height: 1.8;
    margin-bottom: 16px;
    font-size: 0.95rem;
}

.legal-content ul,
.legal-content ol {
    margin: 16px 0 24px 24px;
}

.legal-content ul li,
.legal-content ol li {
    color: var(--color-text);
    line-height: 1.8;
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.legal-content ul { list-style: disc; }
.legal-content ol { list-style: decimal; }

.legal-content strong {
    color: var(--color-secondary);
    font-weight: 600;
}

.legal-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 0.9rem;
}

.legal-content table th,
.legal-content table td {
    padding: 12px 16px;
    text-align: left;
    border: 1px solid var(--color-border);
}

.legal-content table th {
    background: var(--color-bg-gray);
    font-weight: 600;
    color: var(--color-secondary);
}

.legal-content a {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.legal-content a:hover {
    color: var(--color-accent-hover);
}

.legal-toc {
    background: var(--color-bg-gray);
    border-radius: 12px;
    padding: 32px;
    margin-bottom: 48px;
}

.legal-toc h3 {
    margin-top: 0;
    margin-bottom: 16px;
    font-size: 1.1rem;
}

.legal-toc ol {
    margin: 0;
    padding-left: 20px;
    columns: 2;
    column-gap: 32px;
}

.legal-toc ol li {
    margin-bottom: 8px;
    break-inside: avoid;
    line-height: 1.5;
}

.legal-toc ol li a {
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.9rem;
}

.legal-toc ol li a:hover {
    color: var(--color-accent);
}

@media (max-width: 600px) {
    .legal-toc ol { columns: 1; }
}

/* Culture Values */
.value-card {
    background: var(--color-primary);
    padding: 40px 32px;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    text-align: center;
    position: relative;
}

.value-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.value-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 16px;
    opacity: 0.2;
    transition: opacity var(--transition-base);
}

.value-card:hover .value-number {
    opacity: 1;
}

.value-card h3 {
    margin-bottom: 12px;
    font-size: 1.25rem;
}

.value-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Mobile Management Section Highlight */
.mobile-highlight {
    background: linear-gradient(135deg, #000 0%, #1a1a1a 100%);
    color: var(--color-primary);
    position: relative;
    overflow: hidden;
}

.mobile-highlight::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(204, 0, 0, 0.2) 0%, transparent 70%);
    border-radius: 50%;
}

.mobile-mockup {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.mobile-mockup svg {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 60px rgba(0, 0, 0, 0.5));
}

/* Marquee */
.marquee {
    overflow: hidden;
    background: var(--color-bg-dark);
    color: var(--color-primary);
    padding: 24px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.marquee-content {
    display: flex;
    gap: 60px;
    animation: marquee 30s linear infinite;
    white-space: nowrap;
}

.marquee-item {
    font-size: 1.5rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.4);
    display: flex;
    align-items: center;
    gap: 16px;
}

.marquee-item .dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* CTA Section */
.cta-section {
    background: var(--color-bg-dark);
    color: var(--color-primary);
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 50%, rgba(204, 0, 0, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 70% 50%, rgba(204, 0, 0, 0.1) 0%, transparent 50%);
}

.cta-section > * {
    position: relative;
    z-index: 1;
}

.cta-section h2 {
    color: var(--color-primary);
    margin-bottom: 24px;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto 40px;
}

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

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--color-accent);
    z-index: 9999;
    transition: width 0.1s linear;
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--color-accent);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-accent-hover);
    transform: translateY(-4px);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
}

/* Loading screen */
.loader {
    position: fixed;
    inset: 0;
    background: var(--color-bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
}

.loader-logo {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(0.9); opacity: 0.5; }
}

.loader-text {
    color: var(--color-primary);
    font-size: 0.875rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.loader-bar {
    width: 200px;
    height: 2px;
    background: rgba(255, 255, 255, 0.1);
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.loader-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: -50%;
    width: 50%;
    height: 100%;
    background: var(--color-accent);
    animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
    0% { left: -50%; }
    100% { left: 100%; }
}